diff options
Diffstat (limited to 'Documentation')
520 files changed, 21367 insertions, 8719 deletions
diff --git a/Documentation/00-INDEX b/Documentation/00-INDEX index 1f89424..65bbd26 100644 --- a/Documentation/00-INDEX +++ b/Documentation/00-INDEX @@ -272,6 +272,8 @@ printk-formats.txt - how to get printk format specifiers right prio_tree.txt - info on radix-priority-search-tree use for indexing vmas. +ramoops.txt + - documentation of the ramoops oops/panic logging module. rbtree.txt - info on what red-black trees are and what they are for. robust-futex-ABI.txt diff --git a/Documentation/ABI/obsolete/proc-pid-oom_adj b/Documentation/ABI/obsolete/proc-pid-oom_adj index cf63f26..9a3cb88 100644 --- a/Documentation/ABI/obsolete/proc-pid-oom_adj +++ b/Documentation/ABI/obsolete/proc-pid-oom_adj @@ -14,7 +14,7 @@ Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's A much more powerful interface, /proc/<pid>/oom_score_adj, was introduced with the oom killer rewrite that allows users to increase or - decrease the badness() score linearly. This interface will replace + decrease the badness score linearly. This interface will replace /proc/<pid>/oom_adj. A warning will be emitted to the kernel log if an application uses this diff --git a/Documentation/ABI/removed/o2cb b/Documentation/ABI/removed/o2cb index 7f5daa4..20c91ad 100644 --- a/Documentation/ABI/removed/o2cb +++ b/Documentation/ABI/removed/o2cb @@ -1,6 +1,6 @@ What: /sys/o2cb symlink Date: May 2011 -KernelVersion: 2.6.40 +KernelVersion: 3.0 Contact: ocfs2-devel@oss.oracle.com Description: This is a symlink: /sys/o2cb to /sys/fs/o2cb. The symlink is removed when new versions of ocfs2-tools which know to look diff --git a/Documentation/ABI/removed/raw1394 b/Documentation/ABI/removed/raw1394 index 490aa1e..ec333e6 100644 --- a/Documentation/ABI/removed/raw1394 +++ b/Documentation/ABI/removed/raw1394 @@ -5,7 +5,7 @@ Description: /dev/raw1394 was a character device file that allowed low-level access to FireWire buses. Its major drawbacks were its inability to implement sensible device security policies, and its low level - of abstraction that required userspace clients do duplicate much + of abstraction that required userspace clients to duplicate much of the kernel's ieee1394 core functionality. Replaced by /dev/fw*, i.e. the <linux/firewire-cdev.h> ABI of firewire-core. diff --git a/Documentation/ABI/stable/firewire-cdev b/Documentation/ABI/stable/firewire-cdev new file mode 100644 index 0000000..16d0308 --- /dev/null +++ b/Documentation/ABI/stable/firewire-cdev @@ -0,0 +1,103 @@ +What: /dev/fw[0-9]+ +Date: May 2007 +KernelVersion: 2.6.22 +Contact: linux1394-devel@lists.sourceforge.net +Description: + The character device files /dev/fw* are the interface between + firewire-core and IEEE 1394 device drivers implemented in + userspace. The ioctl(2)- and read(2)-based ABI is defined and + documented in <linux/firewire-cdev.h>. + + This ABI offers most of the features which firewire-core also + exposes to kernelspace IEEE 1394 drivers. + + Each /dev/fw* is associated with one IEEE 1394 node, which can + be remote or local nodes. Operations on a /dev/fw* file have + different scope: + - The 1394 node which is associated with the file: + - Asynchronous request transmission + - Get the Configuration ROM + - Query node ID + - Query maximum speed of the path between this node + and local node + - The 1394 bus (i.e. "card") to which the node is attached to: + - Isochronous stream transmission and reception + - Asynchronous stream transmission and reception + - Asynchronous broadcast request transmission + - PHY packet transmission and reception + - Allocate, reallocate, deallocate isochronous + resources (channels, bandwidth) at the bus's IRM + - Query node IDs of local node, root node, IRM, bus + manager + - Query cycle time + - Bus reset initiation, bus reset event reception + - All 1394 buses: + - Allocation of IEEE 1212 address ranges on the local + link layers, reception of inbound requests to such + an address range, asynchronous response transmission + to inbound requests + - Addition of descriptors or directories to the local + nodes' Configuration ROM + + Due to the different scope of operations and in order to let + userland implement different access permission models, some + operations are restricted to /dev/fw* files that are associated + with a local node: + - Addition of descriptors or directories to the local + nodes' Configuration ROM + - PHY packet transmission and reception + + A /dev/fw* file remains associated with one particular node + during its entire life time. Bus topology changes, and hence + node ID changes, are tracked by firewire-core. ABI users do not + need to be aware of topology. + + The following file operations are supported: + + open(2) + Currently the only useful flags are O_RDWR. + + ioctl(2) + Initiate various actions. Some take immediate effect, others + are performed asynchronously while or after the ioctl returns. + See the inline documentation in <linux/firewire-cdev.h> for + descriptions of all ioctls. + + poll(2), select(2), epoll_wait(2) etc. + Watch for events to become available to be read. + + read(2) + Receive various events. There are solicited events like + outbound asynchronous transaction completion or isochronous + buffer completion, and unsolicited events such as bus resets, + request reception, or PHY packet reception. Always use a read + buffer which is large enough to receive the largest event that + could ever arrive. See <linux/firewire-cdev.h> for descriptions + of all event types and for which ioctls affect reception of + events. + + mmap(2) + Allocate a DMA buffer for isochronous reception or transmission + and map it into the process address space. The arguments should + be used as follows: addr = NULL, length = the desired buffer + size, i.e. number of packets times size of largest packet, + prot = at least PROT_READ for reception and at least PROT_WRITE + for transmission, flags = MAP_SHARED, fd = the handle to the + /dev/fw*, offset = 0. + + Isochronous reception works in packet-per-buffer fashion except + for multichannel reception which works in buffer-fill mode. + + munmap(2) + Unmap the isochronous I/O buffer from the process address space. + + close(2) + Besides stopping and freeing I/O contexts that were associated + with the file descriptor, back out any changes to the local + nodes' Configuration ROM. Deallocate isochronous channels and + bandwidth at the IRM that were marked for kernel-assisted + re- and deallocation. + +Users: libraw1394 + libdc1394 + tools like jujuutils, fwhack, ... diff --git a/Documentation/ABI/stable/sysfs-acpi-pmprofile b/Documentation/ABI/stable/sysfs-acpi-pmprofile new file mode 100644 index 0000000..964c7a8 --- /dev/null +++ b/Documentation/ABI/stable/sysfs-acpi-pmprofile @@ -0,0 +1,22 @@ +What: /sys/firmware/acpi/pm_profile +Date: 03-Nov-2011 +KernelVersion: v3.2 +Contact: linux-acpi@vger.kernel.org +Description: The ACPI pm_profile sysfs interface exports the platform + power management (and performance) requirement expectations + as provided by BIOS. The integer value is directly passed as + retrieved from the FADT ACPI table. +Values: For possible values see ACPI specification: + 5.2.9 Fixed ACPI Description Table (FADT) + Field: Preferred_PM_Profile + + Currently these values are defined by spec: + 0 Unspecified + 1 Desktop + 2 Mobile + 3 Workstation + 4 Enterprise Server + 5 SOHO Server + 6 Appliance PC + 7 Performance Server + >7 Reserved diff --git a/Documentation/ABI/stable/sysfs-bus-firewire b/Documentation/ABI/stable/sysfs-bus-firewire new file mode 100644 index 0000000..3d484e5 --- /dev/null +++ b/Documentation/ABI/stable/sysfs-bus-firewire @@ -0,0 +1,122 @@ +What: /sys/bus/firewire/devices/fw[0-9]+/ +Date: May 2007 +KernelVersion: 2.6.22 +Contact: linux1394-devel@lists.sourceforge.net +Description: + IEEE 1394 node device attributes. + Read-only. Mutable during the node device's lifetime. + See IEEE 1212 for semantic definitions. + + config_rom + Contents of the Configuration ROM register. + Binary attribute; an array of host-endian u32. + + guid + The node's EUI-64 in the bus information block of + Configuration ROM. + Hexadecimal string representation of an u64. + + +What: /sys/bus/firewire/devices/fw[0-9]+/units +Date: June 2009 +KernelVersion: 2.6.31 +Contact: linux1394-devel@lists.sourceforge.net +Description: + IEEE 1394 node device attribute. + Read-only. Mutable during the node device's lifetime. + See IEEE 1212 for semantic definitions. + + units + Summary of all units present in an IEEE 1394 node. + Contains space-separated tuples of specifier_id and + version of each unit present in the node. Specifier_id + and version are hexadecimal string representations of + u24 of the respective unit directory entries. + Specifier_id and version within each tuple are separated + by a colon. + +Users: udev rules to set ownership and access permissions or ACLs of + /dev/fw[0-9]+ character device files + + +What: /sys/bus/firewire/devices/fw[0-9]+[.][0-9]+/ +Date: May 2007 +KernelVersion: 2.6.22 +Contact: linux1394-devel@lists.sourceforge.net +Description: + IEEE 1394 unit device attributes. + Read-only. Immutable during the unit device's lifetime. + See IEEE 1212 for semantic definitions. + + modalias + Same as MODALIAS in the uevent at device creation. + + rom_index + Offset of the unit directory within the parent device's + (node device's) Configuration ROM, in quadlets. + Decimal string representation. + + +What: /sys/bus/firewire/devices/*/ +Date: May 2007 +KernelVersion: 2.6.22 +Contact: linux1394-devel@lists.sourceforge.net +Description: + Attributes common to IEEE 1394 node devices and unit devices. + Read-only. Mutable during the node device's lifetime. + Immutable during the unit device's lifetime. + See IEEE 1212 for semantic definitions. + + These attributes are only created if the root directory of an + IEEE 1394 node or the unit directory of an IEEE 1394 unit + actually contains according entries. + + hardware_version + Hexadecimal string representation of an u24. + + hardware_version_name + Contents of a respective textual descriptor leaf. + + model + Hexadecimal string representation of an u24. + + model_name + Contents of a respective textual descriptor leaf. + + specifier_id + Hexadecimal string representation of an u24. + Mandatory in unit directories according to IEEE 1212. + + vendor + Hexadecimal string representation of an u24. + Mandatory in the root directory according to IEEE 1212. + + vendor_name + Contents of a respective textual descriptor leaf. + + version + Hexadecimal string representation of an u24. + Mandatory in unit directories according to IEEE 1212. + + +What: /sys/bus/firewire/drivers/sbp2/fw*/host*/target*/*:*:*:*/ieee1394_id + formerly + /sys/bus/ieee1394/drivers/sbp2/fw*/host*/target*/*:*:*:*/ieee1394_id +Date: Feb 2004 +KernelVersion: 2.6.4 +Contact: linux1394-devel@lists.sourceforge.net +Description: + SCSI target port identifier and logical unit identifier of a + logical unit of an SBP-2 target. The identifiers are specified + in SAM-2...SAM-4 annex A. They are persistent and world-wide + unique properties the SBP-2 attached target. + + Read-only attribute, immutable during the target's lifetime. + Format, as exposed by firewire-sbp2 since 2.6.22, May 2007: + Colon-separated hexadecimal string representations of + u64 EUI-64 : u24 directory_ID : u16 LUN + without 0x prefixes, without whitespace. The former sbp2 driver + (removed in 2.6.37 after being superseded by firewire-sbp2) used + a somewhat shorter format which was not as close to SAM. + +Users: udev rules to create /dev/disk/by-id/ symlinks diff --git a/Documentation/ABI/stable/vdso b/Documentation/ABI/stable/vdso new file mode 100644 index 0000000..8a1cbb5 --- /dev/null +++ b/Documentation/ABI/stable/vdso @@ -0,0 +1,27 @@ +On some architectures, when the kernel loads any userspace program it +maps an ELF DSO into that program's address space. This DSO is called +the vDSO and it often contains useful and highly-optimized alternatives +to real syscalls. + +These functions are called just like ordinary C function according to +your platform's ABI. Call them from a sensible context. (For example, +if you set CS on x86 to something strange, the vDSO functions are +within their rights to crash.) In addition, if you pass a bad +pointer to a vDSO function, you might get SIGSEGV instead of -EFAULT. + +To find the DSO, parse the auxiliary vector passed to the program's +entry point. The AT_SYSINFO_EHDR entry will point to the vDSO. + +The vDSO uses symbol versioning; whenever you request a symbol from the +vDSO, specify the version you are expecting. + +Programs that dynamically link to glibc will use the vDSO automatically. +Otherwise, you can use the reference parser in Documentation/vDSO/parse_vdso.c. + +Unless otherwise noted, the set of symbols with any given version and the +ABI of those symbols is considered stable. It may vary across architectures, +though. + +(As of this writing, this ABI documentation as been confirmed for x86_64. + The maintainers of the other vDSO-using architectures should confirm + that it is correct for their architecture.)
\ No newline at end of file diff --git a/Documentation/ABI/testing/debugfs-ideapad b/Documentation/ABI/testing/debugfs-ideapad new file mode 100644 index 0000000..7079c0b --- /dev/null +++ b/Documentation/ABI/testing/debugfs-ideapad @@ -0,0 +1,19 @@ +What: /sys/kernel/debug/ideapad/cfg +Date: Sep 2011 +KernelVersion: 3.2 +Contact: Ike Panhc <ike.pan@canonical.com> +Description: + +cfg shows the return value of _CFG method in VPC2004 device. It tells machine +capability and what graphic component within the machine. + + +What: /sys/kernel/debug/ideapad/status +Date: Sep 2011 +KernelVersion: 3.2 +Contact: Ike Panhc <ike.pan@canonical.com> +Description: + +status shows infos we can read and tells its meaning and value. + + diff --git a/Documentation/ABI/testing/evm b/Documentation/ABI/testing/evm new file mode 100644 index 0000000..8374d45 --- /dev/null +++ b/Documentation/ABI/testing/evm @@ -0,0 +1,23 @@ +What: security/evm +Date: March 2011 +Contact: Mimi Zohar <zohar@us.ibm.com> +Description: + EVM protects a file's security extended attributes(xattrs) + against integrity attacks. The initial method maintains an + HMAC-sha1 value across the extended attributes, storing the + value as the extended attribute 'security.evm'. + + EVM depends on the Kernel Key Retention System to provide it + with a trusted/encrypted key for the HMAC-sha1 operation. + The key is loaded onto the root's keyring using keyctl. Until + EVM receives notification that the key has been successfully + loaded onto the keyring (echo 1 > <securityfs>/evm), EVM + can not create or validate the 'security.evm' xattr, but + returns INTEGRITY_UNKNOWN. Loading the key and signaling EVM + should be done as early as possible. Normally this is done + in the initramfs, which has already been measured as part + of the trusted boot. For more information on creating and + loading existing trusted/encrypted keys, refer to: + Documentation/keys-trusted-encrypted.txt. (A sample dracut + patch, which loads the trusted/encrypted key and enables + EVM, is available from http://linux-ima.sourceforge.net/#EVM.) diff --git a/Documentation/ABI/testing/pstore b/Documentation/ABI/testing/pstore index ddf451e..ff1df4e 100644 --- a/Documentation/ABI/testing/pstore +++ b/Documentation/ABI/testing/pstore @@ -39,3 +39,9 @@ Description: Generic interface to platform dependent persistent storage. multiple) files based on the record size of the underlying persistent storage until at least this amount is reached. Default is 10 Kbytes. + + Pstore only supports one backend at a time. If multiple + backends are available, the preferred backend may be + set by passing the pstore.backend= argument to the kernel at + boot time. + diff --git a/Documentation/ABI/testing/sysfs-bus-bcma b/Documentation/ABI/testing/sysfs-bus-bcma index 06b62ba..721b4ae 100644 --- a/Documentation/ABI/testing/sysfs-bus-bcma +++ b/Documentation/ABI/testing/sysfs-bus-bcma @@ -1,6 +1,6 @@ What: /sys/bus/bcma/devices/.../manuf Date: May 2011 -KernelVersion: 2.6.40 +KernelVersion: 3.0 Contact: Rafał Miłecki <zajec5@gmail.com> Description: Each BCMA core has it's manufacturer id. See @@ -8,7 +8,7 @@ Description: What: /sys/bus/bcma/devices/.../id Date: May 2011 -KernelVersion: 2.6.40 +KernelVersion: 3.0 Contact: Rafał Miłecki <zajec5@gmail.com> Description: There are a few types of BCMA cores, they can be identified by @@ -16,7 +16,7 @@ Description: What: /sys/bus/bcma/devices/.../rev Date: May 2011 -KernelVersion: 2.6.40 +KernelVersion: 3.0 Contact: Rafał Miłecki <zajec5@gmail.com> Description: BCMA cores of the same type can still slightly differ depending @@ -24,7 +24,7 @@ Description: What: /sys/bus/bcma/devices/.../class Date: May 2011 -KernelVersion: 2.6.40 +KernelVersion: 3.0 Contact: Rafał Miłecki <zajec5@gmail.com> Description: Each BCMA core is identified by few fields, including class it diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 new file mode 100644 index 0000000..9de269b --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 @@ -0,0 +1,21 @@ +What: /sys/bus/i2c/devices/.../device +Date: February 2011 +Contact: Minkyu Kang <mk7.kang@samsung.com> +Description: + show what device is attached + NONE - no device + USB - USB device is attached + UART - UART is attached + CHARGER - Charger is attaced + JIG - JIG is attached + +What: /sys/bus/i2c/devices/.../switch +Date: February 2011 +Contact: Minkyu Kang <mk7.kang@samsung.com> +Description: + show or set the state of manual switch + VAUDIO - switch to VAUDIO path + UART - switch to UART path + AUDIO - switch to AUDIO path + DHOST - switch to DHOST path + AUTO - switch automatically by device diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss index f5bb0a3..53d99ed 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss +++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss @@ -71,3 +71,10 @@ Description: Value of 1 indicates the controller can honor the reset_devices a dump device, as kdump requires resetting the device in order to work reliably. +Where: /sys/bus/pci/devices/<dev>/ccissX/transport_mode +Date: July 2011 +Kernel Version: 3.0 +Contact: iss_storagedev@hp.com +Description: Value of "simple" indicates that the controller has been placed + in "simple mode". Value of "performant" indicates that the + controller has been placed in "performant mode". diff --git a/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd b/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd new file mode 100644 index 0000000..60c60fa --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd @@ -0,0 +1,46 @@ +What: /sys/bus/pci/drivers/ehci_hcd/.../companion + /sys/bus/usb/devices/usbN/../companion +Date: January 2007 +KernelVersion: 2.6.21 +Contact: Alan Stern <stern@rowland.harvard.edu> +Description: + PCI-based EHCI USB controllers (i.e., high-speed USB-2.0 + controllers) are often implemented along with a set of + "companion" full/low-speed USB-1.1 controllers. When a + high-speed device is plugged in, the connection is routed + to the EHCI controller; when a full- or low-speed device + is plugged in, the connection is routed to the companion + controller. + + Sometimes you want to force a high-speed device to connect + at full speed, which can be accomplished by forcing the + connection to be routed to the companion controller. + That's what this file does. Writing a port number to the + file causes connections on that port to be routed to the + companion controller, and writing the negative of a port + number returns the port to normal operation. + + For example: To force the high-speed device attached to + port 4 on bus 2 to run at full speed: + + echo 4 >/sys/bus/usb/devices/usb2/../companion + + To return the port to high-speed operation: + + echo -4 >/sys/bus/usb/devices/usb2/../companion + + Reading the file gives the list of ports currently forced + to the companion controller. + + Note: Some EHCI controllers do not have companions; they + may contain an internal "transaction translator" or they + may be attached directly to a "rate-matching hub". This + mechanism will not work with such controllers. Also, it + cannot be used to force a port on a high-speed hub to + connect at full speed. + + Note: When this file was first added, it appeared in a + different sysfs directory. The location given above is + correct for 2.6.35 (and probably several earlier kernel + versions as well). + diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd index fa72ccb..dbedafb 100644 --- a/Documentation/ABI/testing/sysfs-bus-rbd +++ b/Documentation/ABI/testing/sysfs-bus-rbd @@ -57,13 +57,6 @@ create_snap $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_create -rollback_snap - - Rolls back data to the specified snapshot. This goes over the entire - list of rados blocks and sends a rollback command to each. - - $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_rollback - snap_* A directory per each snapshot diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index 294aa86..e647378 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -142,3 +142,18 @@ Description: such devices. Users: usb_modeswitch + +What: /sys/bus/usb/devices/.../power/usb2_hardware_lpm +Date: September 2011 +Contact: Andiry Xu <andiry.xu@amd.com> +Description: + If CONFIG_USB_SUSPEND is set and a USB 2.0 lpm-capable device + is plugged in to a xHCI host which support link PM, it will + perform a LPM test; if the test is passed and host supports + USB2 hardware LPM (xHCI 1.0 feature), USB2 hardware LPM will + be enabled for the device and the USB device directory will + contain a file named power/usb2_hardware_lpm. The file holds + a string value (enable or disable) indicating whether or not + USB2 hardware LPM is enabled for the device. Developer can + write y/Y/1 or n/N/0 to the file to enable/disable the + feature. diff --git a/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870 b/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870 index aa11dbd..4a9c545 100644 --- a/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870 +++ b/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870 @@ -4,8 +4,8 @@ What: /sys/class/backlight/<backlight>/l2_bright_max What: /sys/class/backlight/<backlight>/l3_office_max What: /sys/class/backlight/<backlight>/l4_indoor_max What: /sys/class/backlight/<backlight>/l5_dark_max -Date: Mai 2011 -KernelVersion: 2.6.40 +Date: May 2011 +KernelVersion: 3.0 Contact: device-drivers-devel@blackfin.uclinux.org Description: Control the maximum brightness for <ambient light zone> @@ -18,8 +18,8 @@ What: /sys/class/backlight/<backlight>/l2_bright_dim What: /sys/class/backlight/<backlight>/l3_office_dim What: /sys/class/backlight/<backlight>/l4_indoor_dim What: /sys/class/backlight/<backlight>/l5_dark_dim -Date: Mai 2011 -KernelVersion: 2.6.40 +Date: May 2011 +KernelVersion: 3.0 Contact: device-drivers-devel@blackfin.uclinux.org Description: Control the dim brightness for <ambient light zone> @@ -29,8 +29,8 @@ Description: this <ambient light zone>. What: /sys/class/backlight/<backlight>/ambient_light_level -Date: Mai 2011 -KernelVersion: 2.6.40 +Date: May 2011 +KernelVersion: 3.0 Contact: device-drivers-devel@blackfin.uclinux.org Description: Get conversion value of the light sensor. @@ -39,8 +39,8 @@ Description: 8000 (max ambient brightness) What: /sys/class/backlight/<backlight>/ambient_light_zone -Date: Mai 2011 -KernelVersion: 2.6.40 +Date: May 2011 +KernelVersion: 3.0 Contact: device-drivers-devel@blackfin.uclinux.org Description: Get/Set current ambient light zone. Reading returns diff --git a/Documentation/ABI/testing/sysfs-class-net-mesh b/Documentation/ABI/testing/sysfs-class-net-mesh index 748fe17..b020014 100644 --- a/Documentation/ABI/testing/sysfs-class-net-mesh +++ b/Documentation/ABI/testing/sysfs-class-net-mesh @@ -22,6 +22,14 @@ Description: mesh will be fragmented or silently discarded if the packet size exceeds the outgoing interface MTU. +What: /sys/class/net/<mesh_iface>/mesh/ap_isolation +Date: May 2011 +Contact: Antonio Quartulli <ordex@autistici.org> +Description: + Indicates whether the data traffic going from a + wireless client to another wireless client will be + silently dropped. + What: /sys/class/net/<mesh_iface>/mesh/gw_bandwidth Date: October 2010 Contact: Marek Lindner <lindner_marek@yahoo.de> diff --git a/Documentation/ABI/testing/sysfs-class-scsi_host b/Documentation/ABI/testing/sysfs-class-scsi_host new file mode 100644 index 0000000..29a4f89 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-scsi_host @@ -0,0 +1,13 @@ +What: /sys/class/scsi_host/hostX/isci_id +Date: June 2011 +Contact: Dave Jiang <dave.jiang@intel.com> +Description: + This file contains the enumerated host ID for the Intel + SCU controller. The Intel(R) C600 Series Chipset SATA/SAS + Storage Control Unit embeds up to two 4-port controllers in + a single PCI device. The controllers are enumerated in order + which usually means the lowest number scsi_host corresponds + with the first controller, but this association is not + guaranteed. The 'isci_id' attribute unambiguously identifies + the controller index: '0' for the first controller, + '1' for the second. diff --git a/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff b/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff new file mode 100644 index 0000000..9aec8ef --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff @@ -0,0 +1,7 @@ +What: /sys/module/hid_logitech/drivers/hid:logitech/<dev>/range. +Date: July 2011 +KernelVersion: 3.2 +Contact: Michal Mal <madcatxster@gmail.com> +Description: Display minimum, maximum and current range of the steering + wheel. Writing a value within min and max boundaries sets the + range of the wheel. diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus index c1b53b8..65e6e5d 100644 --- a/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus +++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus @@ -92,6 +92,14 @@ Description: The mouse has a tracking- and a distance-control-unit. These This file is writeonly. Users: http://roccat.sourceforge.net +What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/talk +Date: May 2011 +Contact: Stefan Achatz <erazor_de@users.sourceforge.net> +Description: Used to active some easy* functions of the mouse from outside. + The data has to be 16 bytes long. + This file is writeonly. +Users: http://roccat.sourceforge.net + What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/tcu Date: October 2010 Contact: Stefan Achatz <erazor_de@users.sourceforge.net> diff --git a/Documentation/ABI/testing/sysfs-driver-hid-wiimote b/Documentation/ABI/testing/sysfs-driver-hid-wiimote new file mode 100644 index 0000000..5d5a16e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-hid-wiimote @@ -0,0 +1,10 @@ +What: /sys/bus/hid/drivers/wiimote/<dev>/led1 +What: /sys/bus/hid/drivers/wiimote/<dev>/led2 +What: /sys/bus/hid/drivers/wiimote/<dev>/led3 +What: /sys/bus/hid/drivers/wiimote/<dev>/led4 +Date: July 2011 +KernelVersion: 3.1 +Contact: David Herrmann <dh.herrmann@googlemail.com> +Description: Make it possible to set/get current led state. Reading from it + returns 0 if led is off and 1 if it is on. Writing 0 to it + disables the led, writing 1 enables it. diff --git a/Documentation/ABI/testing/sysfs-driver-wacom b/Documentation/ABI/testing/sysfs-driver-wacom new file mode 100644 index 0000000..82d4df1 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-wacom @@ -0,0 +1,72 @@ +What: /sys/class/hidraw/hidraw*/device/speed +Date: April 2010 +Kernel Version: 2.6.35 +Contact: linux-bluetooth@vger.kernel.org +Description: + The /sys/class/hidraw/hidraw*/device/speed file controls + reporting speed of Wacom bluetooth tablet. Reading from + this file returns 1 if tablet reports in high speed mode + or 0 otherwise. Writing to this file one of these values + switches reporting speed. + +What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/led +Date: August 2011 +Contact: linux-input@vger.kernel.org +Description: + Attribute group for control of the status LEDs and the OLEDs. + This attribute group is only available for Intuos 4 M, L, + and XL (with LEDs and OLEDs) and Cintiq 21UX2 (LEDs only). + Therefore its presence implicitly signifies the presence of + said LEDs and OLEDs on the tablet device. + +What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status0_luminance +Date: August 2011 +Contact: linux-input@vger.kernel.org +Description: + Writing to this file sets the status LED luminance (1..127) + when the stylus does not touch the tablet surface, and no + button is pressed on the stylus. This luminance level is + normally lower than the level when a button is pressed. + +What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status1_luminance +Date: August 2011 +Contact: linux-input@vger.kernel.org +Description: + Writing to this file sets the status LED luminance (1..127) + when the stylus touches the tablet surface, or any button is + pressed on the stylus. + +What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status_led0_select +Date: August 2011 +Contact: linux-input@vger.kernel.org +Description: + Writing to this file sets which one of the four (for Intuos 4) + or of the right four (for Cintiq 21UX2) status LEDs is active (0..3). + The other three LEDs on the same side are always inactive. + +What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status_led1_select +Date: September 2011 +Contact: linux-input@vger.kernel.org +Description: + Writing to this file sets which one of the left four (for Cintiq 21UX2) + status LEDs is active (0..3). The other three LEDs on the left are always + inactive. + +What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/buttons_luminance +Date: August 2011 +Contact: linux-input@vger.kernel.org +Description: + Writing to this file sets the overall luminance level (0..15) + of all eight button OLED displays. + +What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/button<n>_rawimg +Date: August 2011 +Contact: linux-input@vger.kernel.org +Description: + When writing a 1024 byte raw image in Wacom Intuos 4 + interleaving format to the file, the image shows up on Button N + of the device. The image is a 64x32 pixel 4-bit gray image. The + 1024 byte binary is split up into 16x 64 byte chunks. Each 64 + byte chunk encodes the image data for two consecutive lines on + the display. The low nibble of each byte contains the first + line, and the high nibble contains the second line. diff --git a/Documentation/ABI/testing/sysfs-module b/Documentation/ABI/testing/sysfs-module index cfcec3b..9489ea8 100644 --- a/Documentation/ABI/testing/sysfs-module +++ b/Documentation/ABI/testing/sysfs-module @@ -10,3 +10,26 @@ KernelVersion: 2.6.35 Contact: masa-korg@dsn.okisemi.com Description: Write/read Option ROM data. + +What: /sys/module/ehci_hcd/drivers/.../uframe_periodic_max +Date: July 2011 +KernelVersion: 3.1 +Contact: Kirill Smelkov <kirr@mns.spb.ru> +Description: Maximum time allowed for periodic transfers per microframe (μs) + + [ USB 2.0 sets maximum allowed time for periodic transfers per + microframe to be 80%, that is 100 microseconds out of 125 + microseconds (full microframe). + + However there are cases, when 80% max isochronous bandwidth is + too limiting. For example two video streams could require 110 + microseconds of isochronous bandwidth per microframe to work + together. ] + + Through this setting it is possible to raise the limit so that + the host controller would allow allocating more than 100 + microseconds of periodic bandwidth per microframe. + + Beware, non-standard modes are usually not thoroughly tested by + hardware designers, and the hardware can malfunction when this + setting differ from default 100. diff --git a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop index 807fca2..814b013 100644 --- a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop +++ b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop @@ -4,3 +4,5 @@ KernelVersion: 2.6.37 Contact: "Ike Panhc <ike.pan@canonical.com>" Description: Control the power of camera module. 1 means on, 0 means off. + + diff --git a/Documentation/ABI/testing/sysfs-wacom b/Documentation/ABI/testing/sysfs-wacom deleted file mode 100644 index 1517976..0000000 --- a/Documentation/ABI/testing/sysfs-wacom +++ /dev/null @@ -1,10 +0,0 @@ -What: /sys/class/hidraw/hidraw*/device/speed -Date: April 2010 -Kernel Version: 2.6.35 -Contact: linux-bluetooth@vger.kernel.org -Description: - The /sys/class/hidraw/hidraw*/device/speed file controls - reporting speed of wacom bluetooth tablet. Reading from - this file returns 1 if tablet reports in high speed mode - or 0 otherwise. Writing to this file one of these values - switches reporting speed. diff --git a/Documentation/CodingStyle b/Documentation/CodingStyle index fa6e25b..2b90d32 100644 --- a/Documentation/CodingStyle +++ b/Documentation/CodingStyle @@ -80,22 +80,13 @@ available tools. The limit on the length of lines is 80 columns and this is a strongly preferred limit. -Statements longer than 80 columns will be broken into sensible chunks. -Descendants are always substantially shorter than the parent and are placed -substantially to the right. The same applies to function headers with a long -argument list. Long strings are as well broken into shorter strings. The -only exception to this is where exceeding 80 columns significantly increases -readability and does not hide information. - -void fun(int a, int b, int c) -{ - if (condition) - printk(KERN_WARNING "Warning this is a long printk with " - "3 parameters a: %u b: %u " - "c: %u \n", a, b, c); - else - next_statement; -} +Statements longer than 80 columns will be broken into sensible chunks, unless +exceeding 80 columns significantly increases readability and does not hide +information. Descendants are always substantially shorter than the parent and +are placed substantially to the right. The same applies to function headers +with a long argument list. However, never break user-visible strings such as +printk messages, because that breaks the ability to grep for them. + Chapter 3: Placing Braces and Spaces @@ -175,8 +166,8 @@ if (condition) else do_that(); -This does not apply if one branch of a conditional statement is a single -statement. Use braces in both branches. +This does not apply if only one branch of a conditional statement is a single +statement; in the latter case use braces in both branches: if (condition) { do_this(); diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt index d568bc2..a0b6250 100644 --- a/Documentation/DMA-API-HOWTO.txt +++ b/Documentation/DMA-API-HOWTO.txt @@ -613,13 +613,13 @@ to use the dma_sync_*() interfaces. pass_to_upper_layers(cp->rx_buf); make_and_setup_new_rx_buf(cp); } else { - /* Just sync the buffer and give it back - * to the card. + /* CPU should not write to + * DMA_FROM_DEVICE-mapped area, + * so dma_sync_single_for_device() is + * not needed here. It would be required + * for DMA_BIDIRECTIONAL mapping if + * the memory was modified. */ - dma_sync_single_for_device(&cp->dev, - cp->rx_dma, - cp->rx_len, - DMA_FROM_DEVICE); give_rx_buf_to_card(cp); } } diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt index fe23269..66bd97a 100644 --- a/Documentation/DMA-API.txt +++ b/Documentation/DMA-API.txt @@ -50,6 +50,13 @@ specify the GFP_ flags (see kmalloc) for the allocation (the implementation may choose to ignore flags that affect the location of the returned memory, like GFP_DMA). +void * +dma_zalloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag) + +Wraps dma_alloc_coherent() and also zeroes the returned memory if the +allocation attempt succeeded. + void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle) diff --git a/Documentation/DocBook/.gitignore b/Documentation/DocBook/.gitignore index 679034c..720f245 100644 --- a/Documentation/DocBook/.gitignore +++ b/Documentation/DocBook/.gitignore @@ -8,4 +8,7 @@ *.dvi *.log *.out -media/ +*.png +*.gif +media-indices.tmpl +media-entities.tmpl diff --git a/Documentation/DocBook/80211.tmpl b/Documentation/DocBook/80211.tmpl index 8906648..2014155 100644 --- a/Documentation/DocBook/80211.tmpl +++ b/Documentation/DocBook/80211.tmpl @@ -402,8 +402,9 @@ !Finclude/net/mac80211.h set_key_cmd !Finclude/net/mac80211.h ieee80211_key_conf !Finclude/net/mac80211.h ieee80211_key_flags -!Finclude/net/mac80211.h ieee80211_tkip_key_type -!Finclude/net/mac80211.h ieee80211_get_tkip_key +!Finclude/net/mac80211.h ieee80211_get_tkip_p1k +!Finclude/net/mac80211.h ieee80211_get_tkip_p1k_iv +!Finclude/net/mac80211.h ieee80211_get_tkip_p2k !Finclude/net/mac80211.h ieee80211_key_removed </chapter> @@ -432,8 +433,18 @@ Insert notes about VLAN interfaces with hw crypto here or in the hw crypto chapter. </para> + <section id="ps-client"> + <title>support for powersaving clients</title> +!Pinclude/net/mac80211.h AP support for powersaving clients + </section> !Finclude/net/mac80211.h ieee80211_get_buffered_bc !Finclude/net/mac80211.h ieee80211_beacon_get +!Finclude/net/mac80211.h ieee80211_sta_eosp_irqsafe +!Finclude/net/mac80211.h ieee80211_frame_release_type +!Finclude/net/mac80211.h ieee80211_sta_ps_transition +!Finclude/net/mac80211.h ieee80211_sta_ps_transition_ni +!Finclude/net/mac80211.h ieee80211_sta_set_buffered +!Finclude/net/mac80211.h ieee80211_sta_block_awake </chapter> <chapter id="multi-iface"> @@ -459,7 +470,6 @@ !Finclude/net/mac80211.h sta_notify_cmd !Finclude/net/mac80211.h ieee80211_find_sta !Finclude/net/mac80211.h ieee80211_find_sta_by_ifaddr -!Finclude/net/mac80211.h ieee80211_sta_block_awake </chapter> <chapter id="hardware-scan-offload"> diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile index 3cebfa0..66725a3 100644 --- a/Documentation/DocBook/Makefile +++ b/Documentation/DocBook/Makefile @@ -14,7 +14,9 @@ DOCBOOKS := z8530book.xml mcabook.xml device-drivers.xml \ genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \ 80211.xml debugobjects.xml sh.xml regulator.xml \ alsa-driver-api.xml writing-an-alsa-driver.xml \ - tracepoint.xml media.xml drm.xml + tracepoint.xml drm.xml media_api.xml + +include $(srctree)/Documentation/DocBook/media/Makefile ### # The build process is as follows (targets): @@ -32,7 +34,7 @@ PS_METHOD = $(prefer-db2x) ### # The targets that may be used. -PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs xmldoclinks +PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs BOOKS := $(addprefix $(obj)/,$(DOCBOOKS)) xmldocs: $(BOOKS) @@ -45,27 +47,14 @@ PDF := $(patsubst %.xml, %.pdf, $(BOOKS)) pdfdocs: $(PDF) HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS))) -htmldocs: $(HTML) xmldoclinks +htmldocs: $(HTML) $(call build_main_index) $(call build_images) + $(call install_media_images) MAN := $(patsubst %.xml, %.9, $(BOOKS)) mandocs: $(MAN) -build_images = mkdir -p $(objtree)/Documentation/DocBook/media/ && \ - cp $(srctree)/Documentation/DocBook/dvb/*.png \ - $(srctree)/Documentation/DocBook/v4l/*.gif \ - $(objtree)/Documentation/DocBook/media/ - -xmldoclinks: -ifneq ($(objtree),$(srctree)) - for dep in dvb media-entities.tmpl media-indices.tmpl v4l; do \ - rm -f $(objtree)/Documentation/DocBook/$$dep \ - && ln -s $(srctree)/Documentation/DocBook/$$dep $(objtree)/Documentation/DocBook/ \ - || exit; \ - done -endif - installmandocs: mandocs mkdir -p /usr/local/man/man9/ install Documentation/DocBook/man/*.9.gz /usr/local/man/man9/ @@ -97,11 +86,11 @@ define rule_docproc ) > $(dir $@).$(notdir $@).cmd endef -%.xml: %.tmpl xmldoclinks FORCE +%.xml: %.tmpl FORCE $(call if_changed_rule,docproc) ### -#Read in all saved dependency files +#Read in all saved dependency files cmd_files := $(wildcard $(foreach f,$(BOOKS),$(dir $(f)).$(notdir $(f)).cmd)) ifneq ($(cmd_files),) @@ -150,7 +139,7 @@ quiet_cmd_db2pdf = PDF $@ index = index.html main_idx = Documentation/DocBook/$(index) -build_main_index = rm -rf $(main_idx) && \ +build_main_index = rm -rf $(main_idx); \ echo '<h1>Linux Kernel HTML Documentation</h1>' >> $(main_idx) && \ echo '<h2>Kernel Version: $(KERNELVERSION)</h2>' >> $(main_idx) && \ cat $(HTML) >> $(main_idx) @@ -242,7 +231,7 @@ clean-files := $(DOCBOOKS) \ clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man -cleandocs: +cleandocs: cleanmediadocs $(Q)rm -f $(call objectify, $(clean-files)) $(Q)rm -rf $(call objectify, $(clean-dirs)) diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl index c279158..196b8b9 100644 --- a/Documentation/DocBook/drm.tmpl +++ b/Documentation/DocBook/drm.tmpl @@ -32,7 +32,7 @@ The Linux DRM layer contains code intended to support the needs of complex graphics devices, usually containing programmable pipelines well suited to 3D graphics acceleration. Graphics - drivers in the kernel can make use of DRM functions to make + drivers in the kernel may make use of DRM functions to make tasks like memory management, interrupt handling and DMA easier, and provide a uniform interface to applications. </para> @@ -57,10 +57,10 @@ existing drivers. </para> <para> - First, we'll go over some typical driver initialization + First, we go over some typical driver initialization requirements, like setting up command buffers, creating an initial output configuration, and initializing core services. - Subsequent sections will cover core internals in more detail, + Subsequent sections cover core internals in more detail, providing implementation notes and examples. </para> <para> @@ -74,7 +74,7 @@ </para> <para> The core of every DRM driver is struct drm_driver. Drivers - will typically statically initialize a drm_driver structure, + typically statically initialize a drm_driver structure, then pass it to drm_init() at load time. </para> @@ -88,8 +88,8 @@ </para> <programlisting> static struct drm_driver driver = { - /* don't use mtrr's here, the Xserver or user space app should - * deal with them for intel hardware. + /* Don't use MTRRs here; the Xserver or userspace app should + * deal with them for Intel hardware. */ .driver_features = DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | @@ -154,8 +154,8 @@ </programlisting> <para> In the example above, taken from the i915 DRM driver, the driver - sets several flags indicating what core features it supports. - We'll go over the individual callbacks in later sections. Since + sets several flags indicating what core features it supports; + we go over the individual callbacks in later sections. Since flags indicate which features your driver supports to the DRM core, you need to set most of them prior to calling drm_init(). Some, like DRIVER_MODESET can be set later based on user supplied parameters, @@ -203,8 +203,8 @@ <term>DRIVER_HAVE_IRQ</term><term>DRIVER_IRQ_SHARED</term> <listitem> <para> - DRIVER_HAVE_IRQ indicates whether the driver has a IRQ - handler, DRIVER_IRQ_SHARED indicates whether the device & + DRIVER_HAVE_IRQ indicates whether the driver has an IRQ + handler. DRIVER_IRQ_SHARED indicates whether the device & handler support shared IRQs (note that this is required of PCI drivers). </para> @@ -214,8 +214,8 @@ <term>DRIVER_DMA_QUEUE</term> <listitem> <para> - If the driver queues DMA requests and completes them - asynchronously, this flag should be set. Deprecated. + Should be set if the driver queues DMA requests and completes them + asynchronously. Deprecated. </para> </listitem> </varlistentry> @@ -238,7 +238,7 @@ </variablelist> <para> In this specific case, the driver requires AGP and supports - IRQs. DMA, as we'll see, is handled by device specific ioctls + IRQs. DMA, as discussed later, is handled by device-specific ioctls in this case. It also supports the kernel mode setting APIs, though unlike in the actual i915 driver source, this example unconditionally exports KMS capability. @@ -269,36 +269,34 @@ initial output configuration. </para> <para> - Note that the tasks performed at driver load time must not - conflict with DRM client requirements. For instance, if user + If compatibility is a concern (e.g. with drivers converted over + to the new interfaces from the old ones), care must be taken to + prevent device initialization and control that is incompatible with + currently active userspace drivers. For instance, if user level mode setting drivers are in use, it would be problematic to perform output discovery & configuration at load time. - Likewise, if pre-memory management aware user level drivers are + Likewise, if user-level drivers unaware of memory management are in use, memory management and command buffer setup may need to - be omitted. These requirements are driver specific, and care + be omitted. These requirements are driver-specific, and care needs to be taken to keep both old and new applications and libraries working. The i915 driver supports the "modeset" module parameter to control whether advanced features are - enabled at load time or in legacy fashion. If compatibility is - a concern (e.g. with drivers converted over to the new interfaces - from the old ones), care must be taken to prevent incompatible - device initialization and control with the currently active - userspace drivers. + enabled at load time or in legacy fashion. </para> <sect2> <title>Driver private & performance counters</title> <para> The driver private hangs off the main drm_device structure and - can be used for tracking various device specific bits of + can be used for tracking various device-specific bits of information, like register offsets, command buffer status, register state for suspend/resume, etc. At load time, a - driver can simply allocate one and set drm_device.dev_priv - appropriately; at unload the driver can free it and set - drm_device.dev_priv to NULL. + driver may simply allocate one and set drm_device.dev_priv + appropriately; it should be freed and drm_device.dev_priv set + to NULL when the driver is unloaded. </para> <para> - The DRM supports several counters which can be used for rough + The DRM supports several counters which may be used for rough performance characterization. Note that the DRM stat counter system is not often used by applications, and supporting additional counters is completely optional. @@ -307,15 +305,15 @@ These interfaces are deprecated and should not be used. If performance monitoring is desired, the developer should investigate and potentially enhance the kernel perf and tracing infrastructure to export - GPU related performance information to performance monitoring - tools and applications. + GPU related performance information for consumption by performance + monitoring tools and applications. </para> </sect2> <sect2> <title>Configuring the device</title> <para> - Obviously, device configuration will be device specific. + Obviously, device configuration is device-specific. However, there are several common operations: finding a device's PCI resources, mapping them, and potentially setting up an IRQ handler. @@ -323,10 +321,10 @@ <para> Finding & mapping resources is fairly straightforward. The DRM wrapper functions, drm_get_resource_start() and - drm_get_resource_len() can be used to find BARs on the given + drm_get_resource_len(), may be used to find BARs on the given drm_device struct. Once those values have been retrieved, the driver load function can call drm_addmap() to create a new - mapping for the BAR in question. Note you'll probably want a + mapping for the BAR in question. Note that you probably want a drm_local_map_t in your driver private structure to track any mappings you create. <!-- !Fdrivers/gpu/drm/drm_bufs.c drm_get_resource_* --> @@ -335,20 +333,20 @@ <para> if compatibility with other operating systems isn't a concern (DRM drivers can run under various BSD variants and OpenSolaris), - native Linux calls can be used for the above, e.g. pci_resource_* + native Linux calls may be used for the above, e.g. pci_resource_* and iomap*/iounmap. See the Linux device driver book for more info. </para> <para> - Once you have a register map, you can use the DRM_READn() and + Once you have a register map, you may use the DRM_READn() and DRM_WRITEn() macros to access the registers on your device, or - use driver specific versions to offset into your MMIO space - relative to a driver specific base pointer (see I915_READ for - example). + use driver-specific versions to offset into your MMIO space + relative to a driver-specific base pointer (see I915_READ for + an example). </para> <para> If your device supports interrupt generation, you may want to - setup an interrupt handler at driver load time as well. This + set up an interrupt handler when the driver is loaded. This is done using the drm_irq_install() function. If your device supports vertical blank interrupts, it should call drm_vblank_init() to initialize the core vblank handling code before @@ -357,7 +355,7 @@ </para> <!--!Fdrivers/char/drm/drm_irq.c drm_irq_install--> <para> - Once your interrupt handler is registered (it'll use your + Once your interrupt handler is registered (it uses your drm_driver.irq_handler as the actual interrupt handling function), you can safely enable interrupts on your device, assuming any other state your interrupt handler uses is also @@ -371,10 +369,10 @@ using the pci_map_rom() call, a convenience function that takes care of mapping the actual ROM, whether it has been shadowed into memory (typically at address 0xc0000) or exists - on the PCI device in the ROM BAR. Note that once you've - mapped the ROM and extracted any necessary information, be - sure to unmap it; on many devices the ROM address decoder is - shared with other BARs, so leaving it mapped can cause + on the PCI device in the ROM BAR. Note that after the ROM + has been mapped and any necessary information has been extracted, + it should be unmapped; on many devices, the ROM address decoder is + shared with other BARs, so leaving it mapped could cause undesired behavior like hangs or memory corruption. <!--!Fdrivers/pci/rom.c pci_map_rom--> </para> @@ -389,9 +387,9 @@ should support a memory manager. </para> <para> - If your driver supports memory management (it should!), you'll + If your driver supports memory management (it should!), you need to set that up at load time as well. How you initialize - it depends on which memory manager you're using, TTM or GEM. + it depends on which memory manager you're using: TTM or GEM. </para> <sect3> <title>TTM initialization</title> @@ -401,7 +399,7 @@ and devices with dedicated video RAM (VRAM), i.e. most discrete graphics devices. If your device has dedicated RAM, supporting TTM is desirable. TTM also integrates tightly with your - driver specific buffer execution function. See the radeon + driver-specific buffer execution function. See the radeon driver for examples. </para> <para> @@ -429,21 +427,21 @@ created by the memory manager at runtime. Your global TTM should have a type of TTM_GLOBAL_TTM_MEM. The size field for the global object should be sizeof(struct ttm_mem_global), and the init and - release hooks should point at your driver specific init and - release routines, which will probably eventually call - ttm_mem_global_init and ttm_mem_global_release respectively. + release hooks should point at your driver-specific init and + release routines, which probably eventually call + ttm_mem_global_init and ttm_mem_global_release, respectively. </para> <para> Once your global TTM accounting structure is set up and initialized - (done by calling ttm_global_item_ref on the global object you - just created), you'll need to create a buffer object TTM to + by calling ttm_global_item_ref() on it, + you need to create a buffer object TTM to provide a pool for buffer object allocation by clients and the kernel itself. The type of this object should be TTM_GLOBAL_TTM_BO, and its size should be sizeof(struct ttm_bo_global). Again, - driver specific init and release functions can be provided, - likely eventually calling ttm_bo_global_init and - ttm_bo_global_release, respectively. Also like the previous - object, ttm_global_item_ref is used to create an initial reference + driver-specific init and release functions may be provided, + likely eventually calling ttm_bo_global_init() and + ttm_bo_global_release(), respectively. Also, like the previous + object, ttm_global_item_ref() is used to create an initial reference count for the TTM, which will call your initialization function. </para> </sect3> @@ -453,27 +451,26 @@ GEM is an alternative to TTM, designed specifically for UMA devices. It has simpler initialization and execution requirements than TTM, but has no VRAM management capability. Core GEM - initialization is comprised of a basic drm_mm_init call to create + is initialized by calling drm_mm_init() to create a GTT DRM MM object, which provides an address space pool for - object allocation. In a KMS configuration, the driver will - need to allocate and initialize a command ring buffer following - basic GEM initialization. Most UMA devices have a so-called + object allocation. In a KMS configuration, the driver + needs to allocate and initialize a command ring buffer following + core GEM initialization. A UMA device usually has what is called a "stolen" memory region, which provides space for the initial framebuffer and large, contiguous memory regions required by the - device. This space is not typically managed by GEM, and must + device. This space is not typically managed by GEM, and it must be initialized separately into its own DRM MM object. </para> <para> - Initialization will be driver specific, and will depend on - the architecture of the device. In the case of Intel + Initialization is driver-specific. In the case of Intel integrated graphics chips like 965GM, GEM initialization can be done by calling the internal GEM init function, i915_gem_do_init(). Since the 965GM is a UMA device - (i.e. it doesn't have dedicated VRAM), GEM will manage + (i.e. it doesn't have dedicated VRAM), GEM manages making regular RAM available for GPU operations. Memory set aside by the BIOS (called "stolen" memory by the i915 - driver) will be managed by the DRM memrange allocator; the - rest of the aperture will be managed by GEM. + driver) is managed by the DRM memrange allocator; the + rest of the aperture is managed by GEM. <programlisting> /* Basic memrange allocator for stolen space (aka vram) */ drm_memrange_init(&dev_priv->vram, 0, prealloc_size); @@ -483,7 +480,7 @@ <!--!Edrivers/char/drm/drm_memrange.c--> </para> <para> - Once the memory manager has been set up, we can allocate the + Once the memory manager has been set up, we may allocate the command buffer. In the i915 case, this is also done with a GEM function, i915_gem_init_ringbuffer(). </para> @@ -493,16 +490,25 @@ <sect2> <title>Output configuration</title> <para> - The final initialization task is output configuration. This involves - finding and initializing the CRTCs, encoders and connectors - for your device, creating an initial configuration and - registering a framebuffer console driver. + The final initialization task is output configuration. This involves: + <itemizedlist> + <listitem> + Finding and initializing the CRTCs, encoders, and connectors + for the device. + </listitem> + <listitem> + Creating an initial configuration. + </listitem> + <listitem> + Registering a framebuffer console driver. + </listitem> + </itemizedlist> </para> <sect3> <title>Output discovery and initialization</title> <para> - Several core functions exist to create CRTCs, encoders and - connectors, namely drm_crtc_init(), drm_connector_init() and + Several core functions exist to create CRTCs, encoders, and + connectors, namely: drm_crtc_init(), drm_connector_init(), and drm_encoder_init(), along with several "helper" functions to perform common tasks. </para> @@ -555,10 +561,10 @@ void intel_crt_init(struct drm_device *dev) </programlisting> <para> In the example above (again, taken from the i915 driver), a - CRT connector and encoder combination is created. A device - specific i2c bus is also created, for fetching EDID data and + CRT connector and encoder combination is created. A device-specific + i2c bus is also created for fetching EDID data and performing monitor detection. Once the process is complete, - the new connector is registered with sysfs, to make its + the new connector is registered with sysfs to make its properties available to applications. </para> <sect4> @@ -567,12 +573,12 @@ void intel_crt_init(struct drm_device *dev) Since many PC-class graphics devices have similar display output designs, the DRM provides a set of helper functions to make output management easier. The core helper routines handle - encoder re-routing and disabling of unused functions following - mode set. Using the helpers is optional, but recommended for + encoder re-routing and the disabling of unused functions following + mode setting. Using the helpers is optional, but recommended for devices with PC-style architectures (i.e. a set of display planes for feeding pixels to encoders which are in turn routed to connectors). Devices with more complex requirements needing - finer grained management can opt to use the core callbacks + finer grained management may opt to use the core callbacks directly. </para> <para> @@ -580,17 +586,25 @@ void intel_crt_init(struct drm_device *dev) </para> </sect4> <para> - For each encoder, CRTC and connector, several functions must - be provided, depending on the object type. Encoder objects - need to provide a DPMS (basically on/off) function, mode fixup - (for converting requested modes into native hardware timings), - and prepare, set and commit functions for use by the core DRM - helper functions. Connector helpers need to provide mode fetch and - validity functions as well as an encoder matching function for - returning an ideal encoder for a given connector. The core - connector functions include a DPMS callback, (deprecated) - save/restore routines, detection, mode probing, property handling, - and cleanup functions. + Each encoder object needs to provide: + <itemizedlist> + <listitem> + A DPMS (basically on/off) function. + </listitem> + <listitem> + A mode-fixup function (for converting requested modes into + native hardware timings). + </listitem> + <listitem> + Functions (prepare, set, and commit) for use by the core DRM + helper functions. + </listitem> + </itemizedlist> + Connector helpers need to provide functions (mode-fetch, validity, + and encoder-matching) for returning an ideal encoder for a given + connector. The core connector functions include a DPMS callback, + save/restore routines (deprecated), detection, mode probing, + property handling, and cleanup functions. </para> <!--!Edrivers/char/drm/drm_crtc.h--> <!--!Edrivers/char/drm/drm_crtc.c--> @@ -605,23 +619,34 @@ void intel_crt_init(struct drm_device *dev) <title>VBlank event handling</title> <para> The DRM core exposes two vertical blank related ioctls: - DRM_IOCTL_WAIT_VBLANK and DRM_IOCTL_MODESET_CTL. + <variablelist> + <varlistentry> + <term>DRM_IOCTL_WAIT_VBLANK</term> + <listitem> + <para> + This takes a struct drm_wait_vblank structure as its argument, + and it is used to block or request a signal when a specified + vblank event occurs. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>DRM_IOCTL_MODESET_CTL</term> + <listitem> + <para> + This should be called by application level drivers before and + after mode setting, since on many devices the vertical blank + counter is reset at that time. Internally, the DRM snapshots + the last vblank count when the ioctl is called with the + _DRM_PRE_MODESET command, so that the counter won't go backwards + (which is dealt with when _DRM_POST_MODESET is used). + </para> + </listitem> + </varlistentry> + </variablelist> <!--!Edrivers/char/drm/drm_irq.c--> </para> <para> - DRM_IOCTL_WAIT_VBLANK takes a struct drm_wait_vblank structure - as its argument, and is used to block or request a signal when a - specified vblank event occurs. - </para> - <para> - DRM_IOCTL_MODESET_CTL should be called by application level - drivers before and after mode setting, since on many devices the - vertical blank counter will be reset at that time. Internally, - the DRM snapshots the last vblank count when the ioctl is called - with the _DRM_PRE_MODESET command so that the counter won't go - backwards (which is dealt with when _DRM_POST_MODESET is used). - </para> - <para> To support the functions above, the DRM core provides several helper functions for tracking vertical blank counters, and requires drivers to provide several callbacks: @@ -632,24 +657,24 @@ void intel_crt_init(struct drm_device *dev) register. The enable and disable vblank callbacks should enable and disable vertical blank interrupts, respectively. In the absence of DRM clients waiting on vblank events, the core DRM - code will use the disable_vblank() function to disable - interrupts, which saves power. They'll be re-enabled again when + code uses the disable_vblank() function to disable + interrupts, which saves power. They are re-enabled again when a client calls the vblank wait ioctl above. </para> <para> - Devices that don't provide a count register can simply use an + A device that doesn't provide a count register may simply use an internal atomic counter incremented on every vertical blank - interrupt, and can make their enable and disable vblank - functions into no-ops. + interrupt (and then treat the enable_vblank() and disable_vblank() + callbacks as no-ops). </para> </sect1> <sect1> <title>Memory management</title> <para> - The memory manager lies at the heart of many DRM operations, and - is also required to support advanced client features like OpenGL - pbuffers. The DRM currently contains two memory managers, TTM + The memory manager lies at the heart of many DRM operations; it + is required to support advanced client features like OpenGL + pbuffers. The DRM currently contains two memory managers: TTM and GEM. </para> @@ -679,41 +704,46 @@ void intel_crt_init(struct drm_device *dev) <para> GEM-enabled drivers must provide gem_init_object() and gem_free_object() callbacks to support the core memory - allocation routines. They should also provide several driver - specific ioctls to support command execution, pinning, buffer + allocation routines. They should also provide several driver-specific + ioctls to support command execution, pinning, buffer read & write, mapping, and domain ownership transfers. </para> <para> - On a fundamental level, GEM involves several operations: memory - allocation and freeing, command execution, and aperture management - at command execution time. Buffer object allocation is relatively + On a fundamental level, GEM involves several operations: + <itemizedlist> + <listitem>Memory allocation and freeing</listitem> + <listitem>Command execution</listitem> + <listitem>Aperture management at command execution time</listitem> + </itemizedlist> + Buffer object allocation is relatively straightforward and largely provided by Linux's shmem layer, which provides memory to back each object. When mapped into the GTT or used in a command buffer, the backing pages for an object are flushed to memory and marked write combined so as to be coherent - with the GPU. Likewise, when the GPU finishes rendering to an object, - if the CPU accesses it, it must be made coherent with the CPU's view + with the GPU. Likewise, if the CPU accesses an object after the GPU + has finished rendering to the object, then the object must be made + coherent with the CPU's view of memory, usually involving GPU cache flushing of various kinds. - This core CPU<->GPU coherency management is provided by the GEM - set domain function, which evaluates an object's current domain and + This core CPU<->GPU coherency management is provided by a + device-specific ioctl, which evaluates an object's current domain and performs any necessary flushing or synchronization to put the object into the desired coherency domain (note that the object may be busy, - i.e. an active render target; in that case the set domain function - will block the client and wait for rendering to complete before + i.e. an active render target; in that case, setting the domain + blocks the client and waits for rendering to complete before performing any necessary flushing operations). </para> <para> Perhaps the most important GEM function is providing a command execution interface to clients. Client programs construct command - buffers containing references to previously allocated memory objects - and submit them to GEM. At that point, GEM will take care to bind + buffers containing references to previously allocated memory objects, + and then submit them to GEM. At that point, GEM takes care to bind all the objects into the GTT, execute the buffer, and provide necessary synchronization between clients accessing the same buffers. This often involves evicting some objects from the GTT and re-binding others (a fairly expensive operation), and providing relocation support which hides fixed GTT offsets from clients. Clients must take care not to submit command buffers that reference more objects - than can fit in the GTT or GEM will reject them and no rendering + than can fit in the GTT; otherwise, GEM will reject them and no rendering will occur. Similarly, if several objects in the buffer require fence registers to be allocated for correct rendering (e.g. 2D blits on pre-965 chips), care must be taken not to require more fence @@ -729,7 +759,7 @@ void intel_crt_init(struct drm_device *dev) <title>Output management</title> <para> At the core of the DRM output management code is a set of - structures representing CRTCs, encoders and connectors. + structures representing CRTCs, encoders, and connectors. </para> <para> A CRTC is an abstraction representing a part of the chip that @@ -765,21 +795,19 @@ void intel_crt_init(struct drm_device *dev) <sect1> <title>Framebuffer management</title> <para> - In order to set a mode on a given CRTC, encoder and connector - configuration, clients need to provide a framebuffer object which - will provide a source of pixels for the CRTC to deliver to the encoder(s) - and ultimately the connector(s) in the configuration. A framebuffer - is fundamentally a driver specific memory object, made into an opaque - handle by the DRM addfb function. Once an fb has been created this - way it can be passed to the KMS mode setting routines for use in - a configuration. + Clients need to provide a framebuffer object which provides a source + of pixels for a CRTC to deliver to the encoder(s) and ultimately the + connector(s). A framebuffer is fundamentally a driver-specific memory + object, made into an opaque handle by the DRM's addfb() function. + Once a framebuffer has been created this way, it may be passed to the + KMS mode setting routines for use in a completed configuration. </para> </sect1> <sect1> <title>Command submission & fencing</title> <para> - This should cover a few device specific command submission + This should cover a few device-specific command submission implementations. </para> </sect1> @@ -789,7 +817,7 @@ void intel_crt_init(struct drm_device *dev) <para> The DRM core provides some suspend/resume code, but drivers wanting full suspend/resume support should provide save() and - restore() functions. These will be called at suspend, + restore() functions. These are called at suspend, hibernate, or resume time, and should perform any state save or restore required by your device across suspend or hibernate states. @@ -812,8 +840,8 @@ void intel_crt_init(struct drm_device *dev) <para> The DRM core exports several interfaces to applications, generally intended to be used through corresponding libdrm - wrapper functions. In addition, drivers export device specific - interfaces for use by userspace drivers & device aware + wrapper functions. In addition, drivers export device-specific + interfaces for use by userspace drivers & device-aware applications through ioctls and sysfs files. </para> <para> @@ -822,8 +850,8 @@ void intel_crt_init(struct drm_device *dev) management, memory management, and output management. </para> <para> - Cover generic ioctls and sysfs layout here. Only need high - level info, since man pages will cover the rest. + Cover generic ioctls and sysfs layout here. We only need high-level + info, since man pages should cover the rest. </para> </chapter> diff --git a/Documentation/DocBook/dvb/dvbproperty.xml b/Documentation/DocBook/dvb/dvbproperty.xml deleted file mode 100644 index b5365f6..0000000 --- a/Documentation/DocBook/dvb/dvbproperty.xml +++ /dev/null @@ -1,590 +0,0 @@ -<section id="FE_GET_SET_PROPERTY"> -<title>FE_GET_PROPERTY/FE_SET_PROPERTY</title> - -<programlisting> -/* Reserved fields should be set to 0 */ -struct dtv_property { - __u32 cmd; - union { - __u32 data; - struct { - __u8 data[32]; - __u32 len; - __u32 reserved1[3]; - void *reserved2; - } buffer; - } u; - int result; -} __attribute__ ((packed)); - -/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */ -#define DTV_IOCTL_MAX_MSGS 64 - -struct dtv_properties { - __u32 num; - struct dtv_property *props; -}; -</programlisting> - -<section id="FE_GET_PROPERTY"> -<title>FE_GET_PROPERTY</title> -<para>DESCRIPTION -</para> -<informaltable><tgroup cols="1"><tbody><row><entry - align="char"> -<para>This ioctl call returns one or more frontend properties. This call only - requires read-only access to the device.</para> -</entry> - </row></tbody></tgroup></informaltable> -<para>SYNOPSIS -</para> -<informaltable><tgroup cols="1"><tbody><row><entry - align="char"> -<para>int ioctl(int fd, int request = <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>, - dtv_properties ⋆props);</para> -</entry> - </row></tbody></tgroup></informaltable> -<para>PARAMETERS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>int fd</para> -</entry><entry - align="char"> -<para>File descriptor returned by a previous call to open().</para> -</entry> - </row><row><entry - align="char"> -<para>int num</para> -</entry><entry - align="char"> -<para>Equals <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link> for this command.</para> -</entry> - </row><row><entry - align="char"> -<para>struct dtv_property *props</para> -</entry><entry - align="char"> -<para>Points to the location where the front-end property commands are stored.</para> -</entry> - </row></tbody></tgroup></informaltable> -<para>ERRORS</para> -<informaltable><tgroup cols="2"><tbody><row> - <entry align="char"><para>EINVAL</para></entry> - <entry align="char"><para>Invalid parameter(s) received or number of parameters out of the range.</para></entry> - </row><row> - <entry align="char"><para>ENOMEM</para></entry> - <entry align="char"><para>Out of memory.</para></entry> - </row><row> - <entry align="char"><para>EFAULT</para></entry> - <entry align="char"><para>Failure while copying data from/to userspace.</para></entry> - </row><row> - <entry align="char"><para>EOPNOTSUPP</para></entry> - <entry align="char"><para>Property type not supported.</para></entry> - </row></tbody></tgroup></informaltable> -</section> - -<section id="FE_SET_PROPERTY"> -<title>FE_SET_PROPERTY</title> -<para>DESCRIPTION -</para> -<informaltable><tgroup cols="1"><tbody><row><entry - align="char"> -<para>This ioctl call sets one or more frontend properties. This call only - requires read-only access to the device.</para> -</entry> - </row></tbody></tgroup></informaltable> -<para>SYNOPSIS -</para> -<informaltable><tgroup cols="1"><tbody><row><entry - align="char"> -<para>int ioctl(int fd, int request = <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>, - dtv_properties ⋆props);</para> -</entry> - </row></tbody></tgroup></informaltable> -<para>PARAMETERS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>int fd</para> -</entry><entry - align="char"> -<para>File descriptor returned by a previous call to open().</para> -</entry> - </row><row><entry - align="char"> -<para>int num</para> -</entry><entry - align="char"> -<para>Equals <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link> for this command.</para> -</entry> - </row><row><entry - align="char"> -<para>struct dtv_property *props</para> -</entry><entry - align="char"> -<para>Points to the location where the front-end property commands are stored.</para> -</entry> - </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row> - <entry align="char"><para>EINVAL</para></entry> - <entry align="char"><para>Invalid parameter(s) received or number of parameters out of the range.</para></entry> - </row><row> - <entry align="char"><para>ENOMEM</para></entry> - <entry align="char"><para>Out of memory.</para></entry> - </row><row> - <entry align="char"><para>EFAULT</para></entry> - <entry align="char"><para>Failure while copying data from/to userspace.</para></entry> - </row><row> - <entry align="char"><para>EOPNOTSUPP</para></entry> - <entry align="char"><para>Property type not supported.</para></entry> - </row></tbody></tgroup></informaltable> -</section> - -<section> - <title>Property types</title> -<para> -On <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>/<link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>, -the actual action is determined by the dtv_property cmd/data pairs. With one single ioctl, is possible to -get/set up to 64 properties. The actual meaning of each property is described on the next sections. -</para> - -<para>The available frontend property types are:</para> -<programlisting> -#define DTV_UNDEFINED 0 -#define DTV_TUNE 1 -#define DTV_CLEAR 2 -#define DTV_FREQUENCY 3 -#define DTV_MODULATION 4 -#define DTV_BANDWIDTH_HZ 5 -#define DTV_INVERSION 6 -#define DTV_DISEQC_MASTER 7 -#define DTV_SYMBOL_RATE 8 -#define DTV_INNER_FEC 9 -#define DTV_VOLTAGE 10 -#define DTV_TONE 11 -#define DTV_PILOT 12 -#define DTV_ROLLOFF 13 -#define DTV_DISEQC_SLAVE_REPLY 14 -#define DTV_FE_CAPABILITY_COUNT 15 -#define DTV_FE_CAPABILITY 16 -#define DTV_DELIVERY_SYSTEM 17 -#define DTV_ISDBT_PARTIAL_RECEPTION 18 -#define DTV_ISDBT_SOUND_BROADCASTING 19 -#define DTV_ISDBT_SB_SUBCHANNEL_ID 20 -#define DTV_ISDBT_SB_SEGMENT_IDX 21 -#define DTV_ISDBT_SB_SEGMENT_COUNT 22 -#define DTV_ISDBT_LAYERA_FEC 23 -#define DTV_ISDBT_LAYERA_MODULATION 24 -#define DTV_ISDBT_LAYERA_SEGMENT_COUNT 25 -#define DTV_ISDBT_LAYERA_TIME_INTERLEAVING 26 -#define DTV_ISDBT_LAYERB_FEC 27 -#define DTV_ISDBT_LAYERB_MODULATION 28 -#define DTV_ISDBT_LAYERB_SEGMENT_COUNT 29 -#define DTV_ISDBT_LAYERB_TIME_INTERLEAVING 30 -#define DTV_ISDBT_LAYERC_FEC 31 -#define DTV_ISDBT_LAYERC_MODULATION 32 -#define DTV_ISDBT_LAYERC_SEGMENT_COUNT 33 -#define DTV_ISDBT_LAYERC_TIME_INTERLEAVING 34 -#define DTV_API_VERSION 35 -#define DTV_CODE_RATE_HP 36 -#define DTV_CODE_RATE_LP 37 -#define DTV_GUARD_INTERVAL 38 -#define DTV_TRANSMISSION_MODE 39 -#define DTV_HIERARCHY 40 -#define DTV_ISDBT_LAYER_ENABLED 41 -#define DTV_ISDBS_TS_ID 42 -</programlisting> -</section> - -<section id="fe_property_common"> - <title>Parameters that are common to all Digital TV standards</title> - <section id="DTV_FREQUENCY"> - <title><constant>DTV_FREQUENCY</constant></title> - - <para>Central frequency of the channel, in HZ.</para> - - <para>Notes:</para> - <para>1)For ISDB-T, the channels are usually transmitted with an offset of 143kHz. - E.g. a valid frequncy could be 474143 kHz. The stepping is bound to the bandwidth of - the channel which is 6MHz.</para> - - <para>2)As in ISDB-Tsb the channel consists of only one or three segments the - frequency step is 429kHz, 3*429 respectively. As for ISDB-T the - central frequency of the channel is expected.</para> - </section> - - <section id="DTV_BANDWIDTH_HZ"> - <title><constant>DTV_BANDWIDTH_HZ</constant></title> - - <para>Bandwidth for the channel, in HZ.</para> - - <para>Possible values: - <constant>1712000</constant>, - <constant>5000000</constant>, - <constant>6000000</constant>, - <constant>7000000</constant>, - <constant>8000000</constant>, - <constant>10000000</constant>. - </para> - - <para>Notes:</para> - - <para>1) For ISDB-T it should be always 6000000Hz (6MHz)</para> - <para>2) For ISDB-Tsb it can vary depending on the number of connected segments</para> - <para>3) Bandwidth doesn't apply for DVB-C transmissions, as the bandwidth - for DVB-C depends on the symbol rate</para> - <para>4) Bandwidth in ISDB-T is fixed (6MHz) or can be easily derived from - other parameters (DTV_ISDBT_SB_SEGMENT_IDX, - DTV_ISDBT_SB_SEGMENT_COUNT).</para> - <para>5) DVB-T supports 6, 7 and 8MHz.</para> - <para>6) In addition, DVB-T2 supports 1.172, 5 and 10MHz.</para> - </section> - - <section id="DTV_DELIVERY_SYSTEM"> - <title><constant>DTV_DELIVERY_SYSTEM</constant></title> - - <para>Specifies the type of Delivery system</para> - - <para>Possible values: </para> -<programlisting> -typedef enum fe_delivery_system { - SYS_UNDEFINED, - SYS_DVBC_ANNEX_AC, - SYS_DVBC_ANNEX_B, - SYS_DVBT, - SYS_DSS, - SYS_DVBS, - SYS_DVBS2, - SYS_DVBH, - SYS_ISDBT, - SYS_ISDBS, - SYS_ISDBC, - SYS_ATSC, - SYS_ATSCMH, - SYS_DMBTH, - SYS_CMMB, - SYS_DAB, - SYS_DVBT2, -} fe_delivery_system_t; -</programlisting> - - </section> - - <section id="DTV_TRANSMISSION_MODE"> - <title><constant>DTV_TRANSMISSION_MODE</constant></title> - - <para>Specifies the number of carriers used by the standard</para> - - <para>Possible values are:</para> -<programlisting> -typedef enum fe_transmit_mode { - TRANSMISSION_MODE_2K, - TRANSMISSION_MODE_8K, - TRANSMISSION_MODE_AUTO, - TRANSMISSION_MODE_4K, - TRANSMISSION_MODE_1K, - TRANSMISSION_MODE_16K, - TRANSMISSION_MODE_32K, -} fe_transmit_mode_t; -</programlisting> - - <para>Notes:</para> - <para>1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called - 'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K</para> - - <para>2) If <constant>DTV_TRANSMISSION_MODE</constant> is set the <constant>TRANSMISSION_MODE_AUTO</constant> the - hardware will try to find the correct FFT-size (if capable) and will - use TMCC to fill in the missing parameters.</para> - <para>3) DVB-T specifies 2K and 8K as valid sizes.</para> - <para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para> - </section> - - <section id="DTV_GUARD_INTERVAL"> - <title><constant>DTV_GUARD_INTERVAL</constant></title> - - <para>Possible values are:</para> -<programlisting> -typedef enum fe_guard_interval { - GUARD_INTERVAL_1_32, - GUARD_INTERVAL_1_16, - GUARD_INTERVAL_1_8, - GUARD_INTERVAL_1_4, - GUARD_INTERVAL_AUTO, - GUARD_INTERVAL_1_128, - GUARD_INTERVAL_19_128, - GUARD_INTERVAL_19_256, -} fe_guard_interval_t; -</programlisting> - - <para>Notes:</para> - <para>1) If <constant>DTV_GUARD_INTERVAL</constant> is set the <constant>GUARD_INTERVAL_AUTO</constant> the hardware will - try to find the correct guard interval (if capable) and will use TMCC to fill - in the missing parameters.</para> - <para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para> - </section> -</section> - -<section id="isdbt"> - <title>ISDB-T frontend</title> - <para>This section describes shortly what are the possible parameters in the Linux - DVB-API called "S2API" and now DVB API 5 in order to tune an ISDB-T/ISDB-Tsb - demodulator:</para> - - <para>This ISDB-T/ISDB-Tsb API extension should reflect all information - needed to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible - that some very sophisticated devices won't need certain parameters to - tune.</para> - - <para>The information given here should help application writers to know how - to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API.</para> - - <para>The details given here about ISDB-T and ISDB-Tsb are just enough to - basically show the dependencies between the needed parameter values, - but surely some information is left out. For more detailed information - see the following documents:</para> - - <para>ARIB STD-B31 - "Transmission System for Digital Terrestrial - Television Broadcasting" and</para> - <para>ARIB TR-B14 - "Operational Guidelines for Digital Terrestrial - Television Broadcasting".</para> - - <para>In order to read this document one has to have some knowledge the - channel structure in ISDB-T and ISDB-Tsb. I.e. it has to be known to - the reader that an ISDB-T channel consists of 13 segments, that it can - have up to 3 layer sharing those segments, and things like that.</para> - - <para>Parameters used by ISDB-T and ISDB-Tsb.</para> - - <section id="isdbt-new-parms"> - <title>ISDB-T only parameters</title> - - <section id="isdbt-part-rec"> - <title><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></title> - - <para><constant>If DTV_ISDBT_SOUND_BROADCASTING</constant> is '0' this bit-field represents whether - the channel is in partial reception mode or not.</para> - - <para>If '1' <constant>DTV_ISDBT_LAYERA_*</constant> values are assigned to the center segment and - <constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant> has to be '1'.</para> - - <para>If in addition <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1' - <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> represents whether this ISDB-Tsb channel - is consisting of one segment and layer or three segments and two layers.</para> - - <para>Possible values: 0, 1, -1 (AUTO)</para> - </section> - - <section id="isdbt-sound-bcast"> - <title><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></title> - - <para>This field represents whether the other DTV_ISDBT_*-parameters are - referring to an ISDB-T and an ISDB-Tsb channel. (See also - <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>).</para> - - <para>Possible values: 0, 1, -1 (AUTO)</para> - </section> - - <section id="isdbt-sb-ch-id"> - <title><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></title> - - <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para> - - <para>(Note of the author: This might not be the correct description of the - <constant>SUBCHANNEL-ID</constant> in all details, but it is my understanding of the technical - background needed to program a device)</para> - - <para>An ISDB-Tsb channel (1 or 3 segments) can be broadcasted alone or in a - set of connected ISDB-Tsb channels. In this set of channels every - channel can be received independently. The number of connected - ISDB-Tsb segment can vary, e.g. depending on the frequency spectrum - bandwidth available.</para> - - <para>Example: Assume 8 ISDB-Tsb connected segments are broadcasted. The - broadcaster has several possibilities to put those channels in the - air: Assuming a normal 13-segment ISDB-T spectrum he can align the 8 - segments from position 1-8 to 5-13 or anything in between.</para> - - <para>The underlying layer of segments are subchannels: each segment is - consisting of several subchannels with a predefined IDs. A sub-channel - is used to help the demodulator to synchronize on the channel.</para> - - <para>An ISDB-T channel is always centered over all sub-channels. As for - the example above, in ISDB-Tsb it is no longer as simple as that.</para> - - <para><constant>The DTV_ISDBT_SB_SUBCHANNEL_ID</constant> parameter is used to give the - sub-channel ID of the segment to be demodulated.</para> - - <para>Possible values: 0 .. 41, -1 (AUTO)</para> - </section> - - <section id="isdbt-sb-seg-idx"> - - <title><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></title> - - <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para> - - <para><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant> gives the index of the segment to be - demodulated for an ISDB-Tsb channel where several of them are - transmitted in the connected manner.</para> - - <para>Possible values: 0 .. <constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> - 1</para> - - <para>Note: This value cannot be determined by an automatic channel search.</para> - </section> - - <section id="isdbt-sb-seg-cnt"> - <title><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></title> - - <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para> - - <para><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> gives the total count of connected ISDB-Tsb - channels.</para> - - <para>Possible values: 1 .. 13</para> - - <para>Note: This value cannot be determined by an automatic channel search.</para> - </section> - - <section id="isdb-hierq-layers"> - <title>Hierarchical layers</title> - - <para>ISDB-T channels can be coded hierarchically. As opposed to DVB-T in - ISDB-T hierarchical layers can be decoded simultaneously. For that - reason a ISDB-T demodulator has 3 viterbi and 3 reed-solomon-decoders.</para> - - <para>ISDB-T has 3 hierarchical layers which each can use a part of the - available segments. The total number of segments over all layers has - to 13 in ISDB-T.</para> - - <section id="isdbt-layer-ena"> - <title><constant>DTV_ISDBT_LAYER_ENABLED</constant></title> - - <para>Hierarchical reception in ISDB-T is achieved by enabling or disabling - layers in the decoding process. Setting all bits of - <constant>DTV_ISDBT_LAYER_ENABLED</constant> to '1' forces all layers (if applicable) to be - demodulated. This is the default.</para> - - <para>If the channel is in the partial reception mode - (<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> = 1) the central segment can be decoded - independently of the other 12 segments. In that mode layer A has to - have a <constant>SEGMENT_COUNT</constant> of 1.</para> - - <para>In ISDB-Tsb only layer A is used, it can be 1 or 3 in ISDB-Tsb - according to <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>. <constant>SEGMENT_COUNT</constant> must be filled - accordingly.</para> - - <para>Possible values: 0x1, 0x2, 0x4 (|-able)</para> - - <para><constant>DTV_ISDBT_LAYER_ENABLED[0:0]</constant> - layer A</para> - <para><constant>DTV_ISDBT_LAYER_ENABLED[1:1]</constant> - layer B</para> - <para><constant>DTV_ISDBT_LAYER_ENABLED[2:2]</constant> - layer C</para> - <para><constant>DTV_ISDBT_LAYER_ENABLED[31:3]</constant> unused</para> - </section> - - <section id="isdbt-layer-fec"> - <title><constant>DTV_ISDBT_LAYER*_FEC</constant></title> - - <para>Possible values: <constant>FEC_AUTO</constant>, <constant>FEC_1_2</constant>, <constant>FEC_2_3</constant>, <constant>FEC_3_4</constant>, <constant>FEC_5_6</constant>, <constant>FEC_7_8</constant></para> - </section> - - <section id="isdbt-layer-mod"> - <title><constant>DTV_ISDBT_LAYER*_MODULATION</constant></title> - - <para>Possible values: <constant>QAM_AUTO</constant>, QP<constant>SK, QAM_16</constant>, <constant>QAM_64</constant>, <constant>DQPSK</constant></para> - - <para>Note: If layer C is <constant>DQPSK</constant> layer B has to be <constant>DQPSK</constant>. If layer B is <constant>DQPSK</constant> - and <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>=0 layer has to be <constant>DQPSK</constant>.</para> - </section> - - <section id="isdbt-layer-seg-cnt"> - <title><constant>DTV_ISDBT_LAYER*_SEGMENT_COUNT</constant></title> - - <para>Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)</para> - - <para>Note: Truth table for <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> and - <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> and <constant>LAYER</constant>*_SEGMENT_COUNT</para> - - <informaltable id="isdbt-layer_seg-cnt-table"> - <tgroup cols="6"> - - <tbody> - <row> - <entry>PR</entry> - <entry>SB</entry> - <entry>Layer A width</entry> - <entry>Layer B width</entry> - <entry>Layer C width</entry> - <entry>total width</entry> - </row> - - <row> - <entry>0</entry> - <entry>0</entry> - <entry>1 .. 13</entry> - <entry>1 .. 13</entry> - <entry>1 .. 13</entry> - <entry>13</entry> - </row> - - <row> - <entry>1</entry> - <entry>0</entry> - <entry>1</entry> - <entry>1 .. 13</entry> - <entry>1 .. 13</entry> - <entry>13</entry> - </row> - - <row> - <entry>0</entry> - <entry>1</entry> - <entry>1</entry> - <entry>0</entry> - <entry>0</entry> - <entry>1</entry> - </row> - - <row> - <entry>1</entry> - <entry>1</entry> - <entry>1</entry> - <entry>2</entry> - <entry>0</entry> - <entry>13</entry> - </row> - </tbody> - - </tgroup> - </informaltable> - - </section> - - <section id="isdbt_layer_t_interl"> - <title><constant>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</constant></title> - - <para>Possible values: 0, 1, 2, 3, -1 (AUTO)</para> - - <para>Note: The real inter-leaver depth-names depend on the mode (fft-size); the values - here are referring to what can be found in the TMCC-structure - - independent of the mode.</para> - </section> - </section> - </section> - <section id="dvbt2-params"> - <title>DVB-T2 parameters</title> - - <para>This section covers parameters that apply only to the DVB-T2 delivery method. DVB-T2 - support is currently in the early stages development so expect this section to grow - and become more detailed with time.</para> - - <section id="dvbt2-plp-id"> - <title><constant>DTV_DVBT2_PLP_ID</constant></title> - - <para>DVB-T2 supports Physical Layer Pipes (PLP) to allow transmission of - many data types via a single multiplex. The API will soon support this - at which point this section will be expanded.</para> - </section> - </section> -</section> -</section> diff --git a/Documentation/DocBook/dvb/dvbstb.png b/Documentation/DocBook/dvb/dvbstb.png Binary files differdeleted file mode 100644 index 9b8f372..0000000 --- a/Documentation/DocBook/dvb/dvbstb.png +++ /dev/null diff --git a/Documentation/DocBook/dvb/frontend.h.xml b/Documentation/DocBook/dvb/frontend.h.xml deleted file mode 100644 index d792f78..0000000 --- a/Documentation/DocBook/dvb/frontend.h.xml +++ /dev/null @@ -1,428 +0,0 @@ -<programlisting> -/* - * frontend.h - * - * Copyright (C) 2000 Marcus Metzler <marcus@convergence.de> - * Ralph Metzler <ralph@convergence.de> - * Holger Waechtler <holger@convergence.de> - * Andre Draszik <ad@convergence.de> - * for convergence integrated media GmbH - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public License - * as published by the Free Software Foundation; either version 2.1 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - */ - -#ifndef _DVBFRONTEND_H_ -#define _DVBFRONTEND_H_ - -#include <linux/types.h> - -typedef enum fe_type { - FE_QPSK, - FE_QAM, - FE_OFDM, - FE_ATSC -} fe_type_t; - - -typedef enum fe_caps { - FE_IS_STUPID = 0, - FE_CAN_INVERSION_AUTO = 0x1, - FE_CAN_FEC_1_2 = 0x2, - FE_CAN_FEC_2_3 = 0x4, - FE_CAN_FEC_3_4 = 0x8, - FE_CAN_FEC_4_5 = 0x10, - FE_CAN_FEC_5_6 = 0x20, - FE_CAN_FEC_6_7 = 0x40, - FE_CAN_FEC_7_8 = 0x80, - FE_CAN_FEC_8_9 = 0x100, - FE_CAN_FEC_AUTO = 0x200, - FE_CAN_QPSK = 0x400, - FE_CAN_QAM_16 = 0x800, - FE_CAN_QAM_32 = 0x1000, - FE_CAN_QAM_64 = 0x2000, - FE_CAN_QAM_128 = 0x4000, - FE_CAN_QAM_256 = 0x8000, - FE_CAN_QAM_AUTO = 0x10000, - FE_CAN_TRANSMISSION_MODE_AUTO = 0x20000, - FE_CAN_BANDWIDTH_AUTO = 0x40000, - FE_CAN_GUARD_INTERVAL_AUTO = 0x80000, - FE_CAN_HIERARCHY_AUTO = 0x100000, - FE_CAN_8VSB = 0x200000, - FE_CAN_16VSB = 0x400000, - FE_HAS_EXTENDED_CAPS = 0x800000, /* We need more bitspace for newer APIs, indicate this. */ - FE_CAN_TURBO_FEC = 0x8000000, /* frontend supports "turbo fec modulation" */ - FE_CAN_2G_MODULATION = 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */ - FE_NEEDS_BENDING = 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */ - FE_CAN_RECOVER = 0x40000000, /* frontend can recover from a cable unplug automatically */ - FE_CAN_MUTE_TS = 0x80000000 /* frontend can stop spurious TS data output */ -} fe_caps_t; - - -struct dvb_frontend_info { - char name[128]; - fe_type_t type; - __u32 frequency_min; - __u32 frequency_max; - __u32 frequency_stepsize; - __u32 frequency_tolerance; - __u32 symbol_rate_min; - __u32 symbol_rate_max; - __u32 symbol_rate_tolerance; /* ppm */ - __u32 notifier_delay; /* DEPRECATED */ - fe_caps_t caps; -}; - - -/** - * Check out the DiSEqC bus spec available on http://www.eutelsat.org/ for - * the meaning of this struct... - */ -struct dvb_diseqc_master_cmd { - __u8 msg [6]; /* { framing, address, command, data [3] } */ - __u8 msg_len; /* valid values are 3...6 */ -}; - - -struct dvb_diseqc_slave_reply { - __u8 msg [4]; /* { framing, data [3] } */ - __u8 msg_len; /* valid values are 0...4, 0 means no msg */ - int timeout; /* return from ioctl after timeout ms with */ -}; /* errorcode when no message was received */ - - -typedef enum fe_sec_voltage { - SEC_VOLTAGE_13, - SEC_VOLTAGE_18, - SEC_VOLTAGE_OFF -} fe_sec_voltage_t; - - -typedef enum fe_sec_tone_mode { - SEC_TONE_ON, - SEC_TONE_OFF -} fe_sec_tone_mode_t; - - -typedef enum fe_sec_mini_cmd { - SEC_MINI_A, - SEC_MINI_B -} fe_sec_mini_cmd_t; - - -typedef enum fe_status { - FE_HAS_SIGNAL = 0x01, /* found something above the noise level */ - FE_HAS_CARRIER = 0x02, /* found a DVB signal */ - FE_HAS_VITERBI = 0x04, /* FEC is stable */ - FE_HAS_SYNC = 0x08, /* found sync bytes */ - FE_HAS_LOCK = 0x10, /* everything's working... */ - FE_TIMEDOUT = 0x20, /* no lock within the last ~2 seconds */ - FE_REINIT = 0x40 /* frontend was reinitialized, */ -} fe_status_t; /* application is recommended to reset */ - /* DiSEqC, tone and parameters */ - -typedef enum fe_spectral_inversion { - INVERSION_OFF, - INVERSION_ON, - INVERSION_AUTO -} fe_spectral_inversion_t; - - -typedef enum fe_code_rate { - FEC_NONE = 0, - FEC_1_2, - FEC_2_3, - FEC_3_4, - FEC_4_5, - FEC_5_6, - FEC_6_7, - FEC_7_8, - FEC_8_9, - FEC_AUTO, - FEC_3_5, - FEC_9_10, -} fe_code_rate_t; - - -typedef enum fe_modulation { - QPSK, - QAM_16, - QAM_32, - QAM_64, - QAM_128, - QAM_256, - QAM_AUTO, - VSB_8, - VSB_16, - PSK_8, - APSK_16, - APSK_32, - DQPSK, -} fe_modulation_t; - -typedef enum fe_transmit_mode { - TRANSMISSION_MODE_2K, - TRANSMISSION_MODE_8K, - TRANSMISSION_MODE_AUTO, - TRANSMISSION_MODE_4K, - TRANSMISSION_MODE_1K, - TRANSMISSION_MODE_16K, - TRANSMISSION_MODE_32K, -} fe_transmit_mode_t; - -typedef enum fe_bandwidth { - BANDWIDTH_8_MHZ, - BANDWIDTH_7_MHZ, - BANDWIDTH_6_MHZ, - BANDWIDTH_AUTO, - BANDWIDTH_5_MHZ, - BANDWIDTH_10_MHZ, - BANDWIDTH_1_712_MHZ, -} fe_bandwidth_t; - - -typedef enum fe_guard_interval { - GUARD_INTERVAL_1_32, - GUARD_INTERVAL_1_16, - GUARD_INTERVAL_1_8, - GUARD_INTERVAL_1_4, - GUARD_INTERVAL_AUTO, - GUARD_INTERVAL_1_128, - GUARD_INTERVAL_19_128, - GUARD_INTERVAL_19_256, -} fe_guard_interval_t; - - -typedef enum fe_hierarchy { - HIERARCHY_NONE, - HIERARCHY_1, - HIERARCHY_2, - HIERARCHY_4, - HIERARCHY_AUTO -} fe_hierarchy_t; - - -struct dvb_qpsk_parameters { - __u32 symbol_rate; /* symbol rate in Symbols per second */ - fe_code_rate_t fec_inner; /* forward error correction (see above) */ -}; - -struct dvb_qam_parameters { - __u32 symbol_rate; /* symbol rate in Symbols per second */ - fe_code_rate_t fec_inner; /* forward error correction (see above) */ - fe_modulation_t modulation; /* modulation type (see above) */ -}; - -struct dvb_vsb_parameters { - fe_modulation_t modulation; /* modulation type (see above) */ -}; - -struct dvb_ofdm_parameters { - fe_bandwidth_t bandwidth; - fe_code_rate_t code_rate_HP; /* high priority stream code rate */ - fe_code_rate_t code_rate_LP; /* low priority stream code rate */ - fe_modulation_t constellation; /* modulation type (see above) */ - fe_transmit_mode_t transmission_mode; - fe_guard_interval_t guard_interval; - fe_hierarchy_t hierarchy_information; -}; - - -struct dvb_frontend_parameters { - __u32 frequency; /* (absolute) frequency in Hz for QAM/OFDM/ATSC */ - /* intermediate frequency in kHz for QPSK */ - fe_spectral_inversion_t inversion; - union { - struct dvb_qpsk_parameters qpsk; - struct dvb_qam_parameters qam; - struct dvb_ofdm_parameters ofdm; - struct dvb_vsb_parameters vsb; - } u; -}; - - -struct dvb_frontend_event { - fe_status_t status; - struct dvb_frontend_parameters parameters; -}; - -/* S2API Commands */ -#define DTV_UNDEFINED 0 -#define DTV_TUNE 1 -#define DTV_CLEAR 2 -#define DTV_FREQUENCY 3 -#define DTV_MODULATION 4 -#define DTV_BANDWIDTH_HZ 5 -#define DTV_INVERSION 6 -#define DTV_DISEQC_MASTER 7 -#define DTV_SYMBOL_RATE 8 -#define DTV_INNER_FEC 9 -#define DTV_VOLTAGE 10 -#define DTV_TONE 11 -#define DTV_PILOT 12 -#define DTV_ROLLOFF 13 -#define DTV_DISEQC_SLAVE_REPLY 14 - -/* Basic enumeration set for querying unlimited capabilities */ -#define DTV_FE_CAPABILITY_COUNT 15 -#define DTV_FE_CAPABILITY 16 -#define DTV_DELIVERY_SYSTEM 17 - -/* ISDB-T and ISDB-Tsb */ -#define DTV_ISDBT_PARTIAL_RECEPTION 18 -#define DTV_ISDBT_SOUND_BROADCASTING 19 - -#define DTV_ISDBT_SB_SUBCHANNEL_ID 20 -#define DTV_ISDBT_SB_SEGMENT_IDX 21 -#define DTV_ISDBT_SB_SEGMENT_COUNT 22 - -#define DTV_ISDBT_LAYERA_FEC 23 -#define DTV_ISDBT_LAYERA_MODULATION 24 -#define DTV_ISDBT_LAYERA_SEGMENT_COUNT 25 -#define DTV_ISDBT_LAYERA_TIME_INTERLEAVING 26 - -#define DTV_ISDBT_LAYERB_FEC 27 -#define DTV_ISDBT_LAYERB_MODULATION 28 -#define DTV_ISDBT_LAYERB_SEGMENT_COUNT 29 -#define DTV_ISDBT_LAYERB_TIME_INTERLEAVING 30 - -#define DTV_ISDBT_LAYERC_FEC 31 -#define DTV_ISDBT_LAYERC_MODULATION 32 -#define DTV_ISDBT_LAYERC_SEGMENT_COUNT 33 -#define DTV_ISDBT_LAYERC_TIME_INTERLEAVING 34 - -#define DTV_API_VERSION 35 - -#define DTV_CODE_RATE_HP 36 -#define DTV_CODE_RATE_LP 37 -#define DTV_GUARD_INTERVAL 38 -#define DTV_TRANSMISSION_MODE 39 -#define DTV_HIERARCHY 40 - -#define DTV_ISDBT_LAYER_ENABLED 41 - -#define DTV_ISDBS_TS_ID 42 - -#define DTV_DVBT2_PLP_ID 43 - -#define DTV_MAX_COMMAND DTV_DVBT2_PLP_ID - -typedef enum fe_pilot { - PILOT_ON, - PILOT_OFF, - PILOT_AUTO, -} fe_pilot_t; - -typedef enum fe_rolloff { - ROLLOFF_35, /* Implied value in DVB-S, default for DVB-S2 */ - ROLLOFF_20, - ROLLOFF_25, - ROLLOFF_AUTO, -} fe_rolloff_t; - -typedef enum fe_delivery_system { - SYS_UNDEFINED, - SYS_DVBC_ANNEX_AC, - SYS_DVBC_ANNEX_B, - SYS_DVBT, - SYS_DSS, - SYS_DVBS, - SYS_DVBS2, - SYS_DVBH, - SYS_ISDBT, - SYS_ISDBS, - SYS_ISDBC, - SYS_ATSC, - SYS_ATSCMH, - SYS_DMBTH, - SYS_CMMB, - SYS_DAB, - SYS_DVBT2, -} fe_delivery_system_t; - -struct dtv_cmds_h { - char *name; /* A display name for debugging purposes */ - - __u32 cmd; /* A unique ID */ - - /* Flags */ - __u32 set:1; /* Either a set or get property */ - __u32 buffer:1; /* Does this property use the buffer? */ - __u32 reserved:30; /* Align */ -}; - -struct dtv_property { - __u32 cmd; - __u32 reserved[3]; - union { - __u32 data; - struct { - __u8 data[32]; - __u32 len; - __u32 reserved1[3]; - void *reserved2; - } buffer; - } u; - int result; -} __attribute__ ((packed)); - -/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */ -#define DTV_IOCTL_MAX_MSGS 64 - -struct dtv_properties { - __u32 num; - struct dtv_property *props; -}; - -#define <link linkend="FE_GET_PROPERTY">FE_SET_PROPERTY</link> _IOW('o', 82, struct dtv_properties) -#define <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link> _IOR('o', 83, struct dtv_properties) - - -/** - * When set, this flag will disable any zigzagging or other "normal" tuning - * behaviour. Additionally, there will be no automatic monitoring of the lock - * status, and hence no frontend events will be generated. If a frontend device - * is closed, this flag will be automatically turned off when the device is - * reopened read-write. - */ -#define FE_TUNE_MODE_ONESHOT 0x01 - - -#define <link linkend="FE_GET_INFO">FE_GET_INFO</link> _IOR('o', 61, struct dvb_frontend_info) - -#define <link linkend="FE_DISEQC_RESET_OVERLOAD">FE_DISEQC_RESET_OVERLOAD</link> _IO('o', 62) -#define <link linkend="FE_DISEQC_SEND_MASTER_CMD">FE_DISEQC_SEND_MASTER_CMD</link> _IOW('o', 63, struct dvb_diseqc_master_cmd) -#define <link linkend="FE_DISEQC_RECV_SLAVE_REPLY">FE_DISEQC_RECV_SLAVE_REPLY</link> _IOR('o', 64, struct dvb_diseqc_slave_reply) -#define <link linkend="FE_DISEQC_SEND_BURST">FE_DISEQC_SEND_BURST</link> _IO('o', 65) /* fe_sec_mini_cmd_t */ - -#define <link linkend="FE_SET_TONE">FE_SET_TONE</link> _IO('o', 66) /* fe_sec_tone_mode_t */ -#define <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link> _IO('o', 67) /* fe_sec_voltage_t */ -#define <link linkend="FE_ENABLE_HIGH_LNB_VOLTAGE">FE_ENABLE_HIGH_LNB_VOLTAGE</link> _IO('o', 68) /* int */ - -#define <link linkend="FE_READ_STATUS">FE_READ_STATUS</link> _IOR('o', 69, fe_status_t) -#define <link linkend="FE_READ_BER">FE_READ_BER</link> _IOR('o', 70, __u32) -#define <link linkend="FE_READ_SIGNAL_STRENGTH">FE_READ_SIGNAL_STRENGTH</link> _IOR('o', 71, __u16) -#define <link linkend="FE_READ_SNR">FE_READ_SNR</link> _IOR('o', 72, __u16) -#define <link linkend="FE_READ_UNCORRECTED_BLOCKS">FE_READ_UNCORRECTED_BLOCKS</link> _IOR('o', 73, __u32) - -#define <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> _IOW('o', 76, struct dvb_frontend_parameters) -#define <link linkend="FE_GET_FRONTEND">FE_GET_FRONTEND</link> _IOR('o', 77, struct dvb_frontend_parameters) -#define <link linkend="FE_SET_FRONTEND_TUNE_MODE">FE_SET_FRONTEND_TUNE_MODE</link> _IO('o', 81) /* unsigned int */ -#define <link linkend="FE_GET_EVENT">FE_GET_EVENT</link> _IOR('o', 78, struct dvb_frontend_event) - -#define <link linkend="FE_DISHNETWORK_SEND_LEGACY_CMD">FE_DISHNETWORK_SEND_LEGACY_CMD</link> _IO('o', 80) /* unsigned int */ - -#endif /*_DVBFRONTEND_H_*/ -</programlisting> diff --git a/Documentation/DocBook/kernel-hacking.tmpl b/Documentation/DocBook/kernel-hacking.tmpl index 7b3f493..07a9c48 100644 --- a/Documentation/DocBook/kernel-hacking.tmpl +++ b/Documentation/DocBook/kernel-hacking.tmpl @@ -409,7 +409,7 @@ cond_resched(); /* Will sleep */ <para> You should always compile your kernel - <symbol>CONFIG_DEBUG_SPINLOCK_SLEEP</symbol> on, and it will warn + <symbol>CONFIG_DEBUG_ATOMIC_SLEEP</symbol> on, and it will warn you if you break these rules. If you <emphasis>do</emphasis> break the rules, you will eventually lock up your box. </para> diff --git a/Documentation/DocBook/media-entities.tmpl b/Documentation/DocBook/media-entities.tmpl deleted file mode 100644 index e5fe094..0000000 --- a/Documentation/DocBook/media-entities.tmpl +++ /dev/null @@ -1,464 +0,0 @@ -<!-- Generated file! Do not edit. --> - -<!-- Functions --> -<!ENTITY func-close "<link linkend='func-close'><function>close()</function></link>"> -<!ENTITY func-ioctl "<link linkend='func-ioctl'><function>ioctl()</function></link>"> -<!ENTITY func-mmap "<link linkend='func-mmap'><function>mmap()</function></link>"> -<!ENTITY func-munmap "<link linkend='func-munmap'><function>munmap()</function></link>"> -<!ENTITY func-open "<link linkend='func-open'><function>open()</function></link>"> -<!ENTITY func-poll "<link linkend='func-poll'><function>poll()</function></link>"> -<!ENTITY func-read "<link linkend='func-read'><function>read()</function></link>"> -<!ENTITY func-select "<link linkend='func-select'><function>select()</function></link>"> -<!ENTITY func-write "<link linkend='func-write'><function>write()</function></link>"> - -<!ENTITY media-func-close "<link linkend='media-func-close'><function>close()</function></link>"> -<!ENTITY media-func-ioctl "<link linkend='media-func-ioctl'><function>ioctl()</function></link>"> -<!ENTITY media-func-open "<link linkend='media-func-open'><function>open()</function></link>"> - -<!-- Ioctls --> -<!ENTITY VIDIOC-CROPCAP "<link linkend='vidioc-cropcap'><constant>VIDIOC_CROPCAP</constant></link>"> -<!ENTITY VIDIOC-DBG-G-CHIP-IDENT "<link linkend='vidioc-dbg-g-chip-ident'><constant>VIDIOC_DBG_G_CHIP_IDENT</constant></link>"> -<!ENTITY VIDIOC-DBG-G-REGISTER "<link linkend='vidioc-dbg-g-register'><constant>VIDIOC_DBG_G_REGISTER</constant></link>"> -<!ENTITY VIDIOC-DBG-S-REGISTER "<link linkend='vidioc-dbg-g-register'><constant>VIDIOC_DBG_S_REGISTER</constant></link>"> -<!ENTITY VIDIOC-DQBUF "<link linkend='vidioc-qbuf'><constant>VIDIOC_DQBUF</constant></link>"> -<!ENTITY VIDIOC-DQEVENT "<link linkend='vidioc-dqevent'><constant>VIDIOC_DQEVENT</constant></link>"> -<!ENTITY VIDIOC-ENCODER-CMD "<link linkend='vidioc-encoder-cmd'><constant>VIDIOC_ENCODER_CMD</constant></link>"> -<!ENTITY VIDIOC-ENUMAUDIO "<link linkend='vidioc-enumaudio'><constant>VIDIOC_ENUMAUDIO</constant></link>"> -<!ENTITY VIDIOC-ENUMAUDOUT "<link linkend='vidioc-enumaudioout'><constant>VIDIOC_ENUMAUDOUT</constant></link>"> -<!ENTITY VIDIOC-ENUMINPUT "<link linkend='vidioc-enuminput'><constant>VIDIOC_ENUMINPUT</constant></link>"> -<!ENTITY VIDIOC-ENUMOUTPUT "<link linkend='vidioc-enumoutput'><constant>VIDIOC_ENUMOUTPUT</constant></link>"> -<!ENTITY VIDIOC-ENUMSTD "<link linkend='vidioc-enumstd'><constant>VIDIOC_ENUMSTD</constant></link>"> -<!ENTITY VIDIOC-ENUM-DV-PRESETS "<link linkend='vidioc-enum-dv-presets'><constant>VIDIOC_ENUM_DV_PRESETS</constant></link>"> -<!ENTITY VIDIOC-ENUM-FMT "<link linkend='vidioc-enum-fmt'><constant>VIDIOC_ENUM_FMT</constant></link>"> -<!ENTITY VIDIOC-ENUM-FRAMEINTERVALS "<link linkend='vidioc-enum-frameintervals'><constant>VIDIOC_ENUM_FRAMEINTERVALS</constant></link>"> -<!ENTITY VIDIOC-ENUM-FRAMESIZES "<link linkend='vidioc-enum-framesizes'><constant>VIDIOC_ENUM_FRAMESIZES</constant></link>"> -<!ENTITY VIDIOC-G-AUDIO "<link linkend='vidioc-g-audio'><constant>VIDIOC_G_AUDIO</constant></link>"> -<!ENTITY VIDIOC-G-AUDOUT "<link linkend='vidioc-g-audioout'><constant>VIDIOC_G_AUDOUT</constant></link>"> -<!ENTITY VIDIOC-G-CROP "<link linkend='vidioc-g-crop'><constant>VIDIOC_G_CROP</constant></link>"> -<!ENTITY VIDIOC-G-CTRL "<link linkend='vidioc-g-ctrl'><constant>VIDIOC_G_CTRL</constant></link>"> -<!ENTITY VIDIOC-G-DV-PRESET "<link linkend='vidioc-g-dv-preset'><constant>VIDIOC_G_DV_PRESET</constant></link>"> -<!ENTITY VIDIOC-G-DV-TIMINGS "<link linkend='vidioc-g-dv-timings'><constant>VIDIOC_G_DV_TIMINGS</constant></link>"> -<!ENTITY VIDIOC-G-ENC-INDEX "<link linkend='vidioc-g-enc-index'><constant>VIDIOC_G_ENC_INDEX</constant></link>"> -<!ENTITY VIDIOC-G-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_G_EXT_CTRLS</constant></link>"> -<!ENTITY VIDIOC-G-FBUF "<link linkend='vidioc-g-fbuf'><constant>VIDIOC_G_FBUF</constant></link>"> -<!ENTITY VIDIOC-G-FMT "<link linkend='vidioc-g-fmt'><constant>VIDIOC_G_FMT</constant></link>"> -<!ENTITY VIDIOC-G-FREQUENCY "<link linkend='vidioc-g-frequency'><constant>VIDIOC_G_FREQUENCY</constant></link>"> -<!ENTITY VIDIOC-G-INPUT "<link linkend='vidioc-g-input'><constant>VIDIOC_G_INPUT</constant></link>"> -<!ENTITY VIDIOC-G-JPEGCOMP "<link linkend='vidioc-g-jpegcomp'><constant>VIDIOC_G_JPEGCOMP</constant></link>"> -<!ENTITY VIDIOC-G-MPEGCOMP "<link linkend=''><constant>VIDIOC_G_MPEGCOMP</constant></link>"> -<!ENTITY VIDIOC-G-MODULATOR "<link linkend='vidioc-g-modulator'><constant>VIDIOC_G_MODULATOR</constant></link>"> -<!ENTITY VIDIOC-G-OUTPUT "<link linkend='vidioc-g-output'><constant>VIDIOC_G_OUTPUT</constant></link>"> -<!ENTITY VIDIOC-G-PARM "<link linkend='vidioc-g-parm'><constant>VIDIOC_G_PARM</constant></link>"> -<!ENTITY VIDIOC-G-PRIORITY "<link linkend='vidioc-g-priority'><constant>VIDIOC_G_PRIORITY</constant></link>"> -<!ENTITY VIDIOC-G-SLICED-VBI-CAP "<link linkend='vidioc-g-sliced-vbi-cap'><constant>VIDIOC_G_SLICED_VBI_CAP</constant></link>"> -<!ENTITY VIDIOC-G-STD "<link linkend='vidioc-g-std'><constant>VIDIOC_G_STD</constant></link>"> -<!ENTITY VIDIOC-G-TUNER "<link linkend='vidioc-g-tuner'><constant>VIDIOC_G_TUNER</constant></link>"> -<!ENTITY VIDIOC-LOG-STATUS "<link linkend='vidioc-log-status'><constant>VIDIOC_LOG_STATUS</constant></link>"> -<!ENTITY VIDIOC-OVERLAY "<link linkend='vidioc-overlay'><constant>VIDIOC_OVERLAY</constant></link>"> -<!ENTITY VIDIOC-QBUF "<link linkend='vidioc-qbuf'><constant>VIDIOC_QBUF</constant></link>"> -<!ENTITY VIDIOC-QUERYBUF "<link linkend='vidioc-querybuf'><constant>VIDIOC_QUERYBUF</constant></link>"> -<!ENTITY VIDIOC-QUERYCAP "<link linkend='vidioc-querycap'><constant>VIDIOC_QUERYCAP</constant></link>"> -<!ENTITY VIDIOC-QUERYCTRL "<link linkend='vidioc-queryctrl'><constant>VIDIOC_QUERYCTRL</constant></link>"> -<!ENTITY VIDIOC-QUERYMENU "<link linkend='vidioc-queryctrl'><constant>VIDIOC_QUERYMENU</constant></link>"> -<!ENTITY VIDIOC-QUERYSTD "<link linkend='vidioc-querystd'><constant>VIDIOC_QUERYSTD</constant></link>"> -<!ENTITY VIDIOC-QUERY-DV-PRESET "<link linkend='vidioc-query-dv-preset'><constant>VIDIOC_QUERY_DV_PRESET</constant></link>"> -<!ENTITY VIDIOC-REQBUFS "<link linkend='vidioc-reqbufs'><constant>VIDIOC_REQBUFS</constant></link>"> -<!ENTITY VIDIOC-STREAMOFF "<link linkend='vidioc-streamon'><constant>VIDIOC_STREAMOFF</constant></link>"> -<!ENTITY VIDIOC-STREAMON "<link linkend='vidioc-streamon'><constant>VIDIOC_STREAMON</constant></link>"> -<!ENTITY VIDIOC-SUBSCRIBE-EVENT "<link linkend='vidioc-subscribe-event'><constant>VIDIOC_SUBSCRIBE_EVENT</constant></link>"> -<!ENTITY VIDIOC-S-AUDIO "<link linkend='vidioc-g-audio'><constant>VIDIOC_S_AUDIO</constant></link>"> -<!ENTITY VIDIOC-S-AUDOUT "<link linkend='vidioc-g-audioout'><constant>VIDIOC_S_AUDOUT</constant></link>"> -<!ENTITY VIDIOC-S-CROP "<link linkend='vidioc-g-crop'><constant>VIDIOC_S_CROP</constant></link>"> -<!ENTITY VIDIOC-S-CTRL "<link linkend='vidioc-g-ctrl'><constant>VIDIOC_S_CTRL</constant></link>"> -<!ENTITY VIDIOC-S-DV-PRESET "<link linkend='vidioc-g-dv-preset'><constant>VIDIOC_S_DV_PRESET</constant></link>"> -<!ENTITY VIDIOC-S-DV-TIMINGS "<link linkend='vidioc-g-dv-timings'><constant>VIDIOC_S_DV_TIMINGS</constant></link>"> -<!ENTITY VIDIOC-S-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_S_EXT_CTRLS</constant></link>"> -<!ENTITY VIDIOC-S-FBUF "<link linkend='vidioc-g-fbuf'><constant>VIDIOC_S_FBUF</constant></link>"> -<!ENTITY VIDIOC-S-FMT "<link linkend='vidioc-g-fmt'><constant>VIDIOC_S_FMT</constant></link>"> -<!ENTITY VIDIOC-S-FREQUENCY "<link linkend='vidioc-g-frequency'><constant>VIDIOC_S_FREQUENCY</constant></link>"> -<!ENTITY VIDIOC-S-HW-FREQ-SEEK "<link linkend='vidioc-s-hw-freq-seek'><constant>VIDIOC_S_HW_FREQ_SEEK</constant></link>"> -<!ENTITY VIDIOC-S-INPUT "<link linkend='vidioc-g-input'><constant>VIDIOC_S_INPUT</constant></link>"> -<!ENTITY VIDIOC-S-JPEGCOMP "<link linkend='vidioc-g-jpegcomp'><constant>VIDIOC_S_JPEGCOMP</constant></link>"> -<!ENTITY VIDIOC-S-MPEGCOMP "<link linkend=''><constant>VIDIOC_S_MPEGCOMP</constant></link>"> -<!ENTITY VIDIOC-S-MODULATOR "<link linkend='vidioc-g-modulator'><constant>VIDIOC_S_MODULATOR</constant></link>"> -<!ENTITY VIDIOC-S-OUTPUT "<link linkend='vidioc-g-output'><constant>VIDIOC_S_OUTPUT</constant></link>"> -<!ENTITY VIDIOC-S-PARM "<link linkend='vidioc-g-parm'><constant>VIDIOC_S_PARM</constant></link>"> -<!ENTITY VIDIOC-S-PRIORITY "<link linkend='vidioc-g-priority'><constant>VIDIOC_S_PRIORITY</constant></link>"> -<!ENTITY VIDIOC-S-STD "<link linkend='vidioc-g-std'><constant>VIDIOC_S_STD</constant></link>"> -<!ENTITY VIDIOC-S-TUNER "<link linkend='vidioc-g-tuner'><constant>VIDIOC_S_TUNER</constant></link>"> -<!ENTITY VIDIOC-SUBDEV-ENUM-FRAME-SIZE "<link linkend='vidioc-subdev-enum-frame-size'><constant>VIDIOC_SUBDEV_ENUM_FRAME_SIZE</constant></link>"> -<!ENTITY VIDIOC-SUBDEV-ENUM-MBUS-CODE "<link linkend='vidioc-subdev-enum-mbus-code'><constant>VIDIOC_SUBDEV_ENUM_MBUS_CODE</constant></link>"> -<!ENTITY VIDIOC-SUBDEV-G-CROP "<link linkend='vidioc-subdev-g-crop'><constant>VIDIOC_SUBDEV_G_CROP</constant></link>"> -<!ENTITY VIDIOC-SUBDEV-G-FMT "<link linkend='vidioc-subdev-g-fmt'><constant>VIDIOC_SUBDEV_G_FMT</constant></link>"> -<!ENTITY VIDIOC-SUBDEV-G-FRAME-INTERVAL "<link linkend='vidioc-subdev-g-frame-interval'><constant>VIDIOC_SUBDEV_G_FRAME_INTERVAL</constant></link>"> -<!ENTITY VIDIOC-SUBDEV-S-CROP "<link linkend='vidioc-subdev-g-crop'><constant>VIDIOC_SUBDEV_S_CROP</constant></link>"> -<!ENTITY VIDIOC-SUBDEV-S-FMT "<link linkend='vidioc-subdev-g-fmt'><constant>VIDIOC_SUBDEV_S_FMT</constant></link>"> -<!ENTITY VIDIOC-SUBDEV-S-FRAME-INTERVAL "<link linkend='vidioc-subdev-g-frame-interval'><constant>VIDIOC_SUBDEV_S_FRAME_INTERVAL</constant></link>"> -<!ENTITY VIDIOC-TRY-ENCODER-CMD "<link linkend='vidioc-encoder-cmd'><constant>VIDIOC_TRY_ENCODER_CMD</constant></link>"> -<!ENTITY VIDIOC-TRY-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_TRY_EXT_CTRLS</constant></link>"> -<!ENTITY VIDIOC-TRY-FMT "<link linkend='vidioc-g-fmt'><constant>VIDIOC_TRY_FMT</constant></link>"> -<!ENTITY VIDIOC-UNSUBSCRIBE-EVENT "<link linkend='vidioc-subscribe-event'><constant>VIDIOC_UNSUBSCRIBE_EVENT</constant></link>"> - -<!ENTITY MEDIA-IOC-DEVICE-INFO "<link linkend='media-ioc-device-info'><constant>MEDIA_IOC_DEVICE_INFO</constant></link>"> -<!ENTITY MEDIA-IOC-ENUM-ENTITIES "<link linkend='media-ioc-enum-entities'><constant>MEDIA_IOC_ENUM_ENTITIES</constant></link>"> -<!ENTITY MEDIA-IOC-ENUM-LINKS "<link linkend='media-ioc-enum-links'><constant>MEDIA_IOC_ENUM_LINKS</constant></link>"> -<!ENTITY MEDIA-IOC-SETUP-LINK "<link linkend='media-ioc-setup-link'><constant>MEDIA_IOC_SETUP_LINK</constant></link>"> - -<!-- Types --> -<!ENTITY v4l2-std-id "<link linkend='v4l2-std-id'>v4l2_std_id</link>"> - -<!-- Enums --> -<!ENTITY v4l2-buf-type "enum <link linkend='v4l2-buf-type'>v4l2_buf_type</link>"> -<!ENTITY v4l2-colorspace "enum <link linkend='v4l2-colorspace'>v4l2_colorspace</link>"> -<!ENTITY v4l2-ctrl-type "enum <link linkend='v4l2-ctrl-type'>v4l2_ctrl_type</link>"> -<!ENTITY v4l2-exposure-auto-type "enum <link linkend='v4l2-exposure-auto-type'>v4l2_exposure_auto_type</link>"> -<!ENTITY v4l2-field "enum <link linkend='v4l2-field'>v4l2_field</link>"> -<!ENTITY v4l2-frmivaltypes "enum <link linkend='v4l2-frmivaltypes'>v4l2_frmivaltypes</link>"> -<!ENTITY v4l2-frmsizetypes "enum <link linkend='v4l2-frmsizetypes'>v4l2_frmsizetypes</link>"> -<!ENTITY v4l2-mbus-pixelcode "enum <link linkend='v4l2-mbus-pixelcode'>v4l2_mbus_pixelcode</link>"> -<!ENTITY v4l2-memory "enum <link linkend='v4l2-memory'>v4l2_memory</link>"> -<!ENTITY v4l2-mpeg-audio-ac3-bitrate "enum <link linkend='v4l2-mpeg-audio-ac3-bitrate'>v4l2_mpeg_audio_ac3_bitrate</link>"> -<!ENTITY v4l2-mpeg-audio-crc "enum <link linkend='v4l2-mpeg-audio-crc'>v4l2_mpeg_audio_crc</link>"> -<!ENTITY v4l2-mpeg-audio-emphasis "enum <link linkend='v4l2-mpeg-audio-emphasis'>v4l2_mpeg_audio_emphasis</link>"> -<!ENTITY v4l2-mpeg-audio-encoding "enum <link linkend='v4l2-mpeg-audio-encoding'>v4l2_mpeg_audio_encoding</link>"> -<!ENTITY v4l2-mpeg-audio-l1-bitrate "enum <link linkend='v4l2-mpeg-audio-l1-bitrate'>v4l2_mpeg_audio_l1_bitrate</link>"> -<!ENTITY v4l2-mpeg-audio-l2-bitrate "enum <link linkend='v4l2-mpeg-audio-l2-bitrate'>v4l2_mpeg_audio_l2_bitrate</link>"> -<!ENTITY v4l2-mpeg-audio-l3-bitrate "enum <link linkend='v4l2-mpeg-audio-l3-bitrate'>v4l2_mpeg_audio_l3_bitrate</link>"> -<!ENTITY v4l2-mpeg-audio-mode "enum <link linkend='v4l2-mpeg-audio-mode'>v4l2_mpeg_audio_mode</link>"> -<!ENTITY v4l2-mpeg-audio-mode-extension "enum <link linkend='v4l2-mpeg-audio-mode-extension'>v4l2_mpeg_audio_mode_extension</link>"> -<!ENTITY v4l2-mpeg-audio-sampling-freq "enum <link linkend='v4l2-mpeg-audio-sampling-freq'>v4l2_mpeg_audio_sampling_freq</link>"> -<!ENTITY chroma-spatial-filter-type "enum <link linkend='chroma-spatial-filter-type'>v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type</link>"> -<!ENTITY luma-spatial-filter-type "enum <link linkend='luma-spatial-filter-type'>v4l2_mpeg_cx2341x_video_luma_spatial_filter_type</link>"> -<!ENTITY v4l2-mpeg-cx2341x-video-median-filter-type "enum <link linkend='v4l2-mpeg-cx2341x-video-median-filter-type'>v4l2_mpeg_cx2341x_video_median_filter_type</link>"> -<!ENTITY v4l2-mpeg-cx2341x-video-spatial-filter-mode "enum <link linkend='v4l2-mpeg-cx2341x-video-spatial-filter-mode'>v4l2_mpeg_cx2341x_video_spatial_filter_mode</link>"> -<!ENTITY v4l2-mpeg-cx2341x-video-temporal-filter-mode "enum <link linkend='v4l2-mpeg-cx2341x-video-temporal-filter-mode'>v4l2_mpeg_cx2341x_video_temporal_filter_mode</link>"> -<!ENTITY v4l2-mpeg-stream-type "enum <link linkend='v4l2-mpeg-stream-type'>v4l2_mpeg_stream_type</link>"> -<!ENTITY v4l2-mpeg-stream-vbi-fmt "enum <link linkend='v4l2-mpeg-stream-vbi-fmt'>v4l2_mpeg_stream_vbi_fmt</link>"> -<!ENTITY v4l2-mpeg-video-aspect "enum <link linkend='v4l2-mpeg-video-aspect'>v4l2_mpeg_video_aspect</link>"> -<!ENTITY v4l2-mpeg-video-bitrate-mode "enum <link linkend='v4l2-mpeg-video-bitrate-mode'>v4l2_mpeg_video_bitrate_mode</link>"> -<!ENTITY v4l2-mpeg-video-encoding "enum <link linkend='v4l2-mpeg-video-encoding'>v4l2_mpeg_video_encoding</link>"> -<!ENTITY v4l2-power-line-frequency "enum <link linkend='v4l2-power-line-frequency'>v4l2_power_line_frequency</link>"> -<!ENTITY v4l2-priority "enum <link linkend='v4l2-priority'>v4l2_priority</link>"> -<!ENTITY v4l2-subdev-format-whence "enum <link linkend='v4l2-subdev-format-whence'>v4l2_subdev_format_whence</link>"> -<!ENTITY v4l2-tuner-type "enum <link linkend='v4l2-tuner-type'>v4l2_tuner_type</link>"> -<!ENTITY v4l2-preemphasis "enum <link linkend='v4l2-preemphasis'>v4l2_preemphasis</link>"> - -<!-- Structures --> -<!ENTITY v4l2-audio "struct <link linkend='v4l2-audio'>v4l2_audio</link>"> -<!ENTITY v4l2-audioout "struct <link linkend='v4l2-audioout'>v4l2_audioout</link>"> -<!ENTITY v4l2-bt-timings "struct <link linkend='v4l2-bt-timings'>v4l2_bt_timings</link>"> -<!ENTITY v4l2-buffer "struct <link linkend='v4l2-buffer'>v4l2_buffer</link>"> -<!ENTITY v4l2-plane "struct <link linkend='v4l2-plane'>v4l2_plane</link>"> -<!ENTITY v4l2-capability "struct <link linkend='v4l2-capability'>v4l2_capability</link>"> -<!ENTITY v4l2-captureparm "struct <link linkend='v4l2-captureparm'>v4l2_captureparm</link>"> -<!ENTITY v4l2-clip "struct <link linkend='v4l2-clip'>v4l2_clip</link>"> -<!ENTITY v4l2-control "struct <link linkend='v4l2-control'>v4l2_control</link>"> -<!ENTITY v4l2-crop "struct <link linkend='v4l2-crop'>v4l2_crop</link>"> -<!ENTITY v4l2-cropcap "struct <link linkend='v4l2-cropcap'>v4l2_cropcap</link>"> -<!ENTITY v4l2-dbg-chip-ident "struct <link linkend='v4l2-dbg-chip-ident'>v4l2_dbg_chip_ident</link>"> -<!ENTITY v4l2-dbg-match "struct <link linkend='v4l2-dbg-match'>v4l2_dbg_match</link>"> -<!ENTITY v4l2-dbg-register "struct <link linkend='v4l2-dbg-register'>v4l2_dbg_register</link>"> -<!ENTITY v4l2-dv-enum-preset "struct <link linkend='v4l2-dv-enum-preset'>v4l2_dv_enum_preset</link>"> -<!ENTITY v4l2-dv-preset "struct <link linkend='v4l2-dv-preset'>v4l2_dv_preset</link>"> -<!ENTITY v4l2-dv-timings "struct <link linkend='v4l2-dv-timings'>v4l2_dv_timings</link>"> -<!ENTITY v4l2-enc-idx "struct <link linkend='v4l2-enc-idx'>v4l2_enc_idx</link>"> -<!ENTITY v4l2-enc-idx-entry "struct <link linkend='v4l2-enc-idx-entry'>v4l2_enc_idx_entry</link>"> -<!ENTITY v4l2-encoder-cmd "struct <link linkend='v4l2-encoder-cmd'>v4l2_encoder_cmd</link>"> -<!ENTITY v4l2-event "struct <link linkend='v4l2-event'>v4l2_event</link>"> -<!ENTITY v4l2-event-subscription "struct <link linkend='v4l2-event-subscription'>v4l2_event_subscription</link>"> -<!ENTITY v4l2-event-vsync "struct <link linkend='v4l2-event-vsync'>v4l2_event_vsync</link>"> -<!ENTITY v4l2-ext-control "struct <link linkend='v4l2-ext-control'>v4l2_ext_control</link>"> -<!ENTITY v4l2-ext-controls "struct <link linkend='v4l2-ext-controls'>v4l2_ext_controls</link>"> -<!ENTITY v4l2-fmtdesc "struct <link linkend='v4l2-fmtdesc'>v4l2_fmtdesc</link>"> -<!ENTITY v4l2-format "struct <link linkend='v4l2-format'>v4l2_format</link>"> -<!ENTITY v4l2-fract "struct <link linkend='v4l2-fract'>v4l2_fract</link>"> -<!ENTITY v4l2-framebuffer "struct <link linkend='v4l2-framebuffer'>v4l2_framebuffer</link>"> -<!ENTITY v4l2-frequency "struct <link linkend='v4l2-frequency'>v4l2_frequency</link>"> -<!ENTITY v4l2-frmival-stepwise "struct <link linkend='v4l2-frmival-stepwise'>v4l2_frmival_stepwise</link>"> -<!ENTITY v4l2-frmivalenum "struct <link linkend='v4l2-frmivalenum'>v4l2_frmivalenum</link>"> -<!ENTITY v4l2-frmsize-discrete "struct <link linkend='v4l2-frmsize-discrete'>v4l2_frmsize_discrete</link>"> -<!ENTITY v4l2-frmsize-stepwise "struct <link linkend='v4l2-frmsize-stepwise'>v4l2_frmsize_stepwise</link>"> -<!ENTITY v4l2-frmsizeenum "struct <link linkend='v4l2-frmsizeenum'>v4l2_frmsizeenum</link>"> -<!ENTITY v4l2-hw-freq-seek "struct <link linkend='v4l2-hw-freq-seek'>v4l2_hw_freq_seek</link>"> -<!ENTITY v4l2-input "struct <link linkend='v4l2-input'>v4l2_input</link>"> -<!ENTITY v4l2-jpegcompression "struct <link linkend='v4l2-jpegcompression'>v4l2_jpegcompression</link>"> -<!ENTITY v4l2-mbus-framefmt "struct <link linkend='v4l2-mbus-framefmt'>v4l2_mbus_framefmt</link>"> -<!ENTITY v4l2-modulator "struct <link linkend='v4l2-modulator'>v4l2_modulator</link>"> -<!ENTITY v4l2-mpeg-vbi-fmt-ivtv "struct <link linkend='v4l2-mpeg-vbi-fmt-ivtv'>v4l2_mpeg_vbi_fmt_ivtv</link>"> -<!ENTITY v4l2-output "struct <link linkend='v4l2-output'>v4l2_output</link>"> -<!ENTITY v4l2-outputparm "struct <link linkend='v4l2-outputparm'>v4l2_outputparm</link>"> -<!ENTITY v4l2-pix-format "struct <link linkend='v4l2-pix-format'>v4l2_pix_format</link>"> -<!ENTITY v4l2-pix-format-mplane "struct <link linkend='v4l2-pix-format-mplane'>v4l2_pix_format_mplane</link>"> -<!ENTITY v4l2-plane-pix-format "struct <link linkend='v4l2-plane-pix-format'>v4l2_plane_pix_format</link>"> -<!ENTITY v4l2-queryctrl "struct <link linkend='v4l2-queryctrl'>v4l2_queryctrl</link>"> -<!ENTITY v4l2-querymenu "struct <link linkend='v4l2-querymenu'>v4l2_querymenu</link>"> -<!ENTITY v4l2-rect "struct <link linkend='v4l2-rect'>v4l2_rect</link>"> -<!ENTITY v4l2-requestbuffers "struct <link linkend='v4l2-requestbuffers'>v4l2_requestbuffers</link>"> -<!ENTITY v4l2-sliced-vbi-cap "struct <link linkend='v4l2-sliced-vbi-cap'>v4l2_sliced_vbi_cap</link>"> -<!ENTITY v4l2-sliced-vbi-data "struct <link linkend='v4l2-sliced-vbi-data'>v4l2_sliced_vbi_data</link>"> -<!ENTITY v4l2-sliced-vbi-format "struct <link linkend='v4l2-sliced-vbi-format'>v4l2_sliced_vbi_format</link>"> -<!ENTITY v4l2-subdev-frame-interval "struct <link linkend='v4l2-subdev-frame-interval'>v4l2_subdev_frame_interval</link>"> -<!ENTITY v4l2-subdev-frame-interval-enum "struct <link linkend='v4l2-subdev-frame-interval-enum'>v4l2_subdev_frame_interval_enum</link>"> -<!ENTITY v4l2-subdev-frame-size-enum "struct <link linkend='v4l2-subdev-frame-size-enum'>v4l2_subdev_frame_size_enum</link>"> -<!ENTITY v4l2-subdev-crop "struct <link linkend='v4l2-subdev-crop'>v4l2_subdev_crop</link>"> -<!ENTITY v4l2-subdev-format "struct <link linkend='v4l2-subdev-format'>v4l2_subdev_format</link>"> -<!ENTITY v4l2-subdev-mbus-code-enum "struct <link linkend='v4l2-subdev-mbus-code-enum'>v4l2_subdev_mbus_code_enum</link>"> -<!ENTITY v4l2-standard "struct <link linkend='v4l2-standard'>v4l2_standard</link>"> -<!ENTITY v4l2-streamparm "struct <link linkend='v4l2-streamparm'>v4l2_streamparm</link>"> -<!ENTITY v4l2-timecode "struct <link linkend='v4l2-timecode'>v4l2_timecode</link>"> -<!ENTITY v4l2-tuner "struct <link linkend='v4l2-tuner'>v4l2_tuner</link>"> -<!ENTITY v4l2-vbi-format "struct <link linkend='v4l2-vbi-format'>v4l2_vbi_format</link>"> -<!ENTITY v4l2-window "struct <link linkend='v4l2-window'>v4l2_window</link>"> - -<!ENTITY media-device-info "struct <link linkend='media-device-info'>media_device_info</link>"> -<!ENTITY media-entity-desc "struct <link linkend='media-entity-desc'>media_entity_desc</link>"> -<!ENTITY media-links-enum "struct <link linkend='media-links-enum'>media_links_enum</link>"> -<!ENTITY media-pad-desc "struct <link linkend='media-pad-desc'>media_pad_desc</link>"> -<!ENTITY media-link-desc "struct <link linkend='media-link-desc'>media_link_desc</link>"> - -<!-- Error Codes --> -<!ENTITY EACCES "<errorcode>EACCES</errorcode> error code"> -<!ENTITY EAGAIN "<errorcode>EAGAIN</errorcode> error code"> -<!ENTITY EBADF "<errorcode>EBADF</errorcode> error code"> -<!ENTITY EBUSY "<errorcode>EBUSY</errorcode> error code"> -<!ENTITY EFAULT "<errorcode>EFAULT</errorcode> error code"> -<!ENTITY EIO "<errorcode>EIO</errorcode> error code"> -<!ENTITY EINTR "<errorcode>EINTR</errorcode> error code"> -<!ENTITY EINVAL "<errorcode>EINVAL</errorcode> error code"> -<!ENTITY ENFILE "<errorcode>ENFILE</errorcode> error code"> -<!ENTITY ENOMEM "<errorcode>ENOMEM</errorcode> error code"> -<!ENTITY ENOSPC "<errorcode>ENOSPC</errorcode> error code"> -<!ENTITY ENOTTY "<errorcode>ENOTTY</errorcode> error code"> -<!ENTITY ENXIO "<errorcode>ENXIO</errorcode> error code"> -<!ENTITY EMFILE "<errorcode>EMFILE</errorcode> error code"> -<!ENTITY EPERM "<errorcode>EPERM</errorcode> error code"> -<!ENTITY EPIPE "<errorcode>EPIPE</errorcode> error code"> -<!ENTITY ERANGE "<errorcode>ERANGE</errorcode> error code"> - -<!-- Subsections --> -<!ENTITY sub-biblio SYSTEM "v4l/biblio.xml"> -<!ENTITY sub-common SYSTEM "v4l/common.xml"> -<!ENTITY sub-planar-apis SYSTEM "v4l/planar-apis.xml"> -<!ENTITY sub-compat SYSTEM "v4l/compat.xml"> -<!ENTITY sub-controls SYSTEM "v4l/controls.xml"> -<!ENTITY sub-dev-capture SYSTEM "v4l/dev-capture.xml"> -<!ENTITY sub-dev-codec SYSTEM "v4l/dev-codec.xml"> -<!ENTITY sub-dev-event SYSTEM "v4l/dev-event.xml"> -<!ENTITY sub-dev-effect SYSTEM "v4l/dev-effect.xml"> -<!ENTITY sub-dev-osd SYSTEM "v4l/dev-osd.xml"> -<!ENTITY sub-dev-output SYSTEM "v4l/dev-output.xml"> -<!ENTITY sub-dev-overlay SYSTEM "v4l/dev-overlay.xml"> -<!ENTITY sub-dev-radio SYSTEM "v4l/dev-radio.xml"> -<!ENTITY sub-dev-raw-vbi SYSTEM "v4l/dev-raw-vbi.xml"> -<!ENTITY sub-dev-rds SYSTEM "v4l/dev-rds.xml"> -<!ENTITY sub-dev-sliced-vbi SYSTEM "v4l/dev-sliced-vbi.xml"> -<!ENTITY sub-dev-subdev SYSTEM "v4l/dev-subdev.xml"> -<!ENTITY sub-dev-teletext SYSTEM "v4l/dev-teletext.xml"> -<!ENTITY sub-driver SYSTEM "v4l/driver.xml"> -<!ENTITY sub-libv4l SYSTEM "v4l/libv4l.xml"> -<!ENTITY sub-lirc_device_interface SYSTEM "v4l/lirc_device_interface.xml"> -<!ENTITY sub-remote_controllers SYSTEM "v4l/remote_controllers.xml"> -<!ENTITY sub-fdl-appendix SYSTEM "v4l/fdl-appendix.xml"> -<!ENTITY sub-close SYSTEM "v4l/func-close.xml"> -<!ENTITY sub-ioctl SYSTEM "v4l/func-ioctl.xml"> -<!ENTITY sub-mmap SYSTEM "v4l/func-mmap.xml"> -<!ENTITY sub-munmap SYSTEM "v4l/func-munmap.xml"> -<!ENTITY sub-open SYSTEM "v4l/func-open.xml"> -<!ENTITY sub-poll SYSTEM "v4l/func-poll.xml"> -<!ENTITY sub-read SYSTEM "v4l/func-read.xml"> -<!ENTITY sub-select SYSTEM "v4l/func-select.xml"> -<!ENTITY sub-write SYSTEM "v4l/func-write.xml"> -<!ENTITY sub-io SYSTEM "v4l/io.xml"> -<!ENTITY sub-grey SYSTEM "v4l/pixfmt-grey.xml"> -<!ENTITY sub-m420 SYSTEM "v4l/pixfmt-m420.xml"> -<!ENTITY sub-nv12 SYSTEM "v4l/pixfmt-nv12.xml"> -<!ENTITY sub-nv12m SYSTEM "v4l/pixfmt-nv12m.xml"> -<!ENTITY sub-nv12mt SYSTEM "v4l/pixfmt-nv12mt.xml"> -<!ENTITY sub-nv16 SYSTEM "v4l/pixfmt-nv16.xml"> -<!ENTITY sub-packed-rgb SYSTEM "v4l/pixfmt-packed-rgb.xml"> -<!ENTITY sub-packed-yuv SYSTEM "v4l/pixfmt-packed-yuv.xml"> -<!ENTITY sub-sbggr16 SYSTEM "v4l/pixfmt-sbggr16.xml"> -<!ENTITY sub-sbggr8 SYSTEM "v4l/pixfmt-sbggr8.xml"> -<!ENTITY sub-sgbrg8 SYSTEM "v4l/pixfmt-sgbrg8.xml"> -<!ENTITY sub-sgrbg8 SYSTEM "v4l/pixfmt-sgrbg8.xml"> -<!ENTITY sub-uyvy SYSTEM "v4l/pixfmt-uyvy.xml"> -<!ENTITY sub-vyuy SYSTEM "v4l/pixfmt-vyuy.xml"> -<!ENTITY sub-y16 SYSTEM "v4l/pixfmt-y16.xml"> -<!ENTITY sub-y41p SYSTEM "v4l/pixfmt-y41p.xml"> -<!ENTITY sub-yuv410 SYSTEM "v4l/pixfmt-yuv410.xml"> -<!ENTITY sub-yuv411p SYSTEM "v4l/pixfmt-yuv411p.xml"> -<!ENTITY sub-yuv420 SYSTEM "v4l/pixfmt-yuv420.xml"> -<!ENTITY sub-yuv420m SYSTEM "v4l/pixfmt-yuv420m.xml"> -<!ENTITY sub-yuv422p SYSTEM "v4l/pixfmt-yuv422p.xml"> -<!ENTITY sub-yuyv SYSTEM "v4l/pixfmt-yuyv.xml"> -<!ENTITY sub-yvyu SYSTEM "v4l/pixfmt-yvyu.xml"> -<!ENTITY sub-srggb10 SYSTEM "v4l/pixfmt-srggb10.xml"> -<!ENTITY sub-srggb12 SYSTEM "v4l/pixfmt-srggb12.xml"> -<!ENTITY sub-srggb8 SYSTEM "v4l/pixfmt-srggb8.xml"> -<!ENTITY sub-y10 SYSTEM "v4l/pixfmt-y10.xml"> -<!ENTITY sub-y12 SYSTEM "v4l/pixfmt-y12.xml"> -<!ENTITY sub-y10b SYSTEM "v4l/pixfmt-y10b.xml"> -<!ENTITY sub-pixfmt SYSTEM "v4l/pixfmt.xml"> -<!ENTITY sub-cropcap SYSTEM "v4l/vidioc-cropcap.xml"> -<!ENTITY sub-dbg-g-register SYSTEM "v4l/vidioc-dbg-g-register.xml"> -<!ENTITY sub-encoder-cmd SYSTEM "v4l/vidioc-encoder-cmd.xml"> -<!ENTITY sub-enum-fmt SYSTEM "v4l/vidioc-enum-fmt.xml"> -<!ENTITY sub-enum-frameintervals SYSTEM "v4l/vidioc-enum-frameintervals.xml"> -<!ENTITY sub-enum-framesizes SYSTEM "v4l/vidioc-enum-framesizes.xml"> -<!ENTITY sub-enumaudio SYSTEM "v4l/vidioc-enumaudio.xml"> -<!ENTITY sub-enumaudioout SYSTEM "v4l/vidioc-enumaudioout.xml"> -<!ENTITY sub-enuminput SYSTEM "v4l/vidioc-enuminput.xml"> -<!ENTITY sub-enumoutput SYSTEM "v4l/vidioc-enumoutput.xml"> -<!ENTITY sub-enum-dv-presets SYSTEM "v4l/vidioc-enum-dv-presets.xml"> -<!ENTITY sub-g-dv-preset SYSTEM "v4l/vidioc-g-dv-preset.xml"> -<!ENTITY sub-query-dv-preset SYSTEM "v4l/vidioc-query-dv-preset.xml"> -<!ENTITY sub-g-dv-timings SYSTEM "v4l/vidioc-g-dv-timings.xml"> -<!ENTITY sub-enumstd SYSTEM "v4l/vidioc-enumstd.xml"> -<!ENTITY sub-g-audio SYSTEM "v4l/vidioc-g-audio.xml"> -<!ENTITY sub-g-audioout SYSTEM "v4l/vidioc-g-audioout.xml"> -<!ENTITY sub-dbg-g-chip-ident SYSTEM "v4l/vidioc-dbg-g-chip-ident.xml"> -<!ENTITY sub-g-crop SYSTEM "v4l/vidioc-g-crop.xml"> -<!ENTITY sub-g-ctrl SYSTEM "v4l/vidioc-g-ctrl.xml"> -<!ENTITY sub-g-enc-index SYSTEM "v4l/vidioc-g-enc-index.xml"> -<!ENTITY sub-g-ext-ctrls SYSTEM "v4l/vidioc-g-ext-ctrls.xml"> -<!ENTITY sub-g-fbuf SYSTEM "v4l/vidioc-g-fbuf.xml"> -<!ENTITY sub-g-fmt SYSTEM "v4l/vidioc-g-fmt.xml"> -<!ENTITY sub-g-frequency SYSTEM "v4l/vidioc-g-frequency.xml"> -<!ENTITY sub-g-input SYSTEM "v4l/vidioc-g-input.xml"> -<!ENTITY sub-g-jpegcomp SYSTEM "v4l/vidioc-g-jpegcomp.xml"> -<!ENTITY sub-g-modulator SYSTEM "v4l/vidioc-g-modulator.xml"> -<!ENTITY sub-g-output SYSTEM "v4l/vidioc-g-output.xml"> -<!ENTITY sub-g-parm SYSTEM "v4l/vidioc-g-parm.xml"> -<!ENTITY sub-g-priority SYSTEM "v4l/vidioc-g-priority.xml"> -<!ENTITY sub-g-sliced-vbi-cap SYSTEM "v4l/vidioc-g-sliced-vbi-cap.xml"> -<!ENTITY sub-g-std SYSTEM "v4l/vidioc-g-std.xml"> -<!ENTITY sub-g-tuner SYSTEM "v4l/vidioc-g-tuner.xml"> -<!ENTITY sub-log-status SYSTEM "v4l/vidioc-log-status.xml"> -<!ENTITY sub-overlay SYSTEM "v4l/vidioc-overlay.xml"> -<!ENTITY sub-qbuf SYSTEM "v4l/vidioc-qbuf.xml"> -<!ENTITY sub-querybuf SYSTEM "v4l/vidioc-querybuf.xml"> -<!ENTITY sub-querycap SYSTEM "v4l/vidioc-querycap.xml"> -<!ENTITY sub-queryctrl SYSTEM "v4l/vidioc-queryctrl.xml"> -<!ENTITY sub-querystd SYSTEM "v4l/vidioc-querystd.xml"> -<!ENTITY sub-reqbufs SYSTEM "v4l/vidioc-reqbufs.xml"> -<!ENTITY sub-s-hw-freq-seek SYSTEM "v4l/vidioc-s-hw-freq-seek.xml"> -<!ENTITY sub-streamon SYSTEM "v4l/vidioc-streamon.xml"> -<!ENTITY sub-subdev-enum-frame-interval SYSTEM "v4l/vidioc-subdev-enum-frame-interval.xml"> -<!ENTITY sub-subdev-enum-frame-size SYSTEM "v4l/vidioc-subdev-enum-frame-size.xml"> -<!ENTITY sub-subdev-enum-mbus-code SYSTEM "v4l/vidioc-subdev-enum-mbus-code.xml"> -<!ENTITY sub-subdev-formats SYSTEM "v4l/subdev-formats.xml"> -<!ENTITY sub-subdev-g-crop SYSTEM "v4l/vidioc-subdev-g-crop.xml"> -<!ENTITY sub-subdev-g-fmt SYSTEM "v4l/vidioc-subdev-g-fmt.xml"> -<!ENTITY sub-subdev-g-frame-interval SYSTEM "v4l/vidioc-subdev-g-frame-interval.xml"> -<!ENTITY sub-capture-c SYSTEM "v4l/capture.c.xml"> -<!ENTITY sub-keytable-c SYSTEM "v4l/keytable.c.xml"> -<!ENTITY sub-v4l2grab-c SYSTEM "v4l/v4l2grab.c.xml"> -<!ENTITY sub-videodev2-h SYSTEM "v4l/videodev2.h.xml"> -<!ENTITY sub-v4l2 SYSTEM "v4l/v4l2.xml"> -<!ENTITY sub-dqevent SYSTEM "v4l/vidioc-dqevent.xml"> -<!ENTITY sub-subscribe-event SYSTEM "v4l/vidioc-subscribe-event.xml"> -<!ENTITY sub-intro SYSTEM "dvb/intro.xml"> -<!ENTITY sub-frontend SYSTEM "dvb/frontend.xml"> -<!ENTITY sub-dvbproperty SYSTEM "dvb/dvbproperty.xml"> -<!ENTITY sub-demux SYSTEM "dvb/demux.xml"> -<!ENTITY sub-video SYSTEM "dvb/video.xml"> -<!ENTITY sub-audio SYSTEM "dvb/audio.xml"> -<!ENTITY sub-ca SYSTEM "dvb/ca.xml"> -<!ENTITY sub-net SYSTEM "dvb/net.xml"> -<!ENTITY sub-kdapi SYSTEM "dvb/kdapi.xml"> -<!ENTITY sub-examples SYSTEM "dvb/examples.xml"> -<!ENTITY sub-frontend-h SYSTEM "dvb/frontend.h.xml"> -<!ENTITY sub-dvbapi SYSTEM "dvb/dvbapi.xml"> -<!ENTITY sub-media SYSTEM "media.xml"> -<!ENTITY sub-media-entities SYSTEM "media-entities.tmpl"> -<!ENTITY sub-media-indices SYSTEM "media-indices.tmpl"> - -<!ENTITY sub-media-controller SYSTEM "v4l/media-controller.xml"> -<!ENTITY sub-media-func-open SYSTEM "v4l/media-func-open.xml"> -<!ENTITY sub-media-func-close SYSTEM "v4l/media-func-close.xml"> -<!ENTITY sub-media-func-ioctl SYSTEM "v4l/media-func-ioctl.xml"> -<!ENTITY sub-media-ioc-device-info SYSTEM "v4l/media-ioc-device-info.xml"> -<!ENTITY sub-media-ioc-enum-entities SYSTEM "v4l/media-ioc-enum-entities.xml"> -<!ENTITY sub-media-ioc-enum-links SYSTEM "v4l/media-ioc-enum-links.xml"> -<!ENTITY sub-media-ioc-setup-link SYSTEM "v4l/media-ioc-setup-link.xml"> - -<!-- Function Reference --> -<!ENTITY close SYSTEM "v4l/func-close.xml"> -<!ENTITY ioctl SYSTEM "v4l/func-ioctl.xml"> -<!ENTITY mmap SYSTEM "v4l/func-mmap.xml"> -<!ENTITY munmap SYSTEM "v4l/func-munmap.xml"> -<!ENTITY open SYSTEM "v4l/func-open.xml"> -<!ENTITY poll SYSTEM "v4l/func-poll.xml"> -<!ENTITY read SYSTEM "v4l/func-read.xml"> -<!ENTITY select SYSTEM "v4l/func-select.xml"> -<!ENTITY write SYSTEM "v4l/func-write.xml"> -<!ENTITY grey SYSTEM "v4l/pixfmt-grey.xml"> -<!ENTITY nv12 SYSTEM "v4l/pixfmt-nv12.xml"> -<!ENTITY nv12m SYSTEM "v4l/pixfmt-nv12m.xml"> -<!ENTITY nv16 SYSTEM "v4l/pixfmt-nv16.xml"> -<!ENTITY packed-rgb SYSTEM "v4l/pixfmt-packed-rgb.xml"> -<!ENTITY packed-yuv SYSTEM "v4l/pixfmt-packed-yuv.xml"> -<!ENTITY sbggr16 SYSTEM "v4l/pixfmt-sbggr16.xml"> -<!ENTITY sbggr8 SYSTEM "v4l/pixfmt-sbggr8.xml"> -<!ENTITY sgbrg8 SYSTEM "v4l/pixfmt-sgbrg8.xml"> -<!ENTITY sgrbg8 SYSTEM "v4l/pixfmt-sgrbg8.xml"> -<!ENTITY uyvy SYSTEM "v4l/pixfmt-uyvy.xml"> -<!ENTITY vyuy SYSTEM "v4l/pixfmt-vyuy.xml"> -<!ENTITY y16 SYSTEM "v4l/pixfmt-y16.xml"> -<!ENTITY y41p SYSTEM "v4l/pixfmt-y41p.xml"> -<!ENTITY yuv410 SYSTEM "v4l/pixfmt-yuv410.xml"> -<!ENTITY yuv411p SYSTEM "v4l/pixfmt-yuv411p.xml"> -<!ENTITY yuv420 SYSTEM "v4l/pixfmt-yuv420.xml"> -<!ENTITY yuv420m SYSTEM "v4l/pixfmt-yuv420m.xml"> -<!ENTITY yuv422p SYSTEM "v4l/pixfmt-yuv422p.xml"> -<!ENTITY yuyv SYSTEM "v4l/pixfmt-yuyv.xml"> -<!ENTITY yvyu SYSTEM "v4l/pixfmt-yvyu.xml"> -<!ENTITY srggb10 SYSTEM "v4l/pixfmt-srggb10.xml"> -<!ENTITY srggb8 SYSTEM "v4l/pixfmt-srggb8.xml"> -<!ENTITY y10 SYSTEM "v4l/pixfmt-y10.xml"> -<!ENTITY cropcap SYSTEM "v4l/vidioc-cropcap.xml"> -<!ENTITY dbg-g-register SYSTEM "v4l/vidioc-dbg-g-register.xml"> -<!ENTITY encoder-cmd SYSTEM "v4l/vidioc-encoder-cmd.xml"> -<!ENTITY enum-fmt SYSTEM "v4l/vidioc-enum-fmt.xml"> -<!ENTITY enum-frameintervals SYSTEM "v4l/vidioc-enum-frameintervals.xml"> -<!ENTITY enum-framesizes SYSTEM "v4l/vidioc-enum-framesizes.xml"> -<!ENTITY enumaudio SYSTEM "v4l/vidioc-enumaudio.xml"> -<!ENTITY enumaudioout SYSTEM "v4l/vidioc-enumaudioout.xml"> -<!ENTITY enuminput SYSTEM "v4l/vidioc-enuminput.xml"> -<!ENTITY enumoutput SYSTEM "v4l/vidioc-enumoutput.xml"> -<!ENTITY enum-dv-presets SYSTEM "v4l/vidioc-enum-dv-presets.xml"> -<!ENTITY g-dv-preset SYSTEM "v4l/vidioc-g-dv-preset.xml"> -<!ENTITY query-dv-preset SYSTEM "v4l/vidioc-query-dv-preset.xml"> -<!ENTITY g-dv-timings SYSTEM "v4l/vidioc-g-dv-timings.xml"> -<!ENTITY enumstd SYSTEM "v4l/vidioc-enumstd.xml"> -<!ENTITY g-audio SYSTEM "v4l/vidioc-g-audio.xml"> -<!ENTITY g-audioout SYSTEM "v4l/vidioc-g-audioout.xml"> -<!ENTITY dbg-g-chip-ident SYSTEM "v4l/vidioc-dbg-g-chip-ident.xml"> -<!ENTITY g-crop SYSTEM "v4l/vidioc-g-crop.xml"> -<!ENTITY g-ctrl SYSTEM "v4l/vidioc-g-ctrl.xml"> -<!ENTITY g-enc-index SYSTEM "v4l/vidioc-g-enc-index.xml"> -<!ENTITY g-ext-ctrls SYSTEM "v4l/vidioc-g-ext-ctrls.xml"> -<!ENTITY g-fbuf SYSTEM "v4l/vidioc-g-fbuf.xml"> -<!ENTITY g-fmt SYSTEM "v4l/vidioc-g-fmt.xml"> -<!ENTITY g-frequency SYSTEM "v4l/vidioc-g-frequency.xml"> -<!ENTITY g-input SYSTEM "v4l/vidioc-g-input.xml"> -<!ENTITY g-jpegcomp SYSTEM "v4l/vidioc-g-jpegcomp.xml"> -<!ENTITY g-modulator SYSTEM "v4l/vidioc-g-modulator.xml"> -<!ENTITY g-output SYSTEM "v4l/vidioc-g-output.xml"> -<!ENTITY g-parm SYSTEM "v4l/vidioc-g-parm.xml"> -<!ENTITY g-priority SYSTEM "v4l/vidioc-g-priority.xml"> -<!ENTITY g-sliced-vbi-cap SYSTEM "v4l/vidioc-g-sliced-vbi-cap.xml"> -<!ENTITY g-std SYSTEM "v4l/vidioc-g-std.xml"> -<!ENTITY g-tuner SYSTEM "v4l/vidioc-g-tuner.xml"> -<!ENTITY log-status SYSTEM "v4l/vidioc-log-status.xml"> -<!ENTITY overlay SYSTEM "v4l/vidioc-overlay.xml"> -<!ENTITY qbuf SYSTEM "v4l/vidioc-qbuf.xml"> -<!ENTITY querybuf SYSTEM "v4l/vidioc-querybuf.xml"> -<!ENTITY querycap SYSTEM "v4l/vidioc-querycap.xml"> -<!ENTITY queryctrl SYSTEM "v4l/vidioc-queryctrl.xml"> -<!ENTITY querystd SYSTEM "v4l/vidioc-querystd.xml"> -<!ENTITY reqbufs SYSTEM "v4l/vidioc-reqbufs.xml"> -<!ENTITY s-hw-freq-seek SYSTEM "v4l/vidioc-s-hw-freq-seek.xml"> -<!ENTITY streamon SYSTEM "v4l/vidioc-streamon.xml"> -<!ENTITY dqevent SYSTEM "v4l/vidioc-dqevent.xml"> -<!ENTITY subscribe_event SYSTEM "v4l/vidioc-subscribe-event.xml"> diff --git a/Documentation/DocBook/media-indices.tmpl b/Documentation/DocBook/media-indices.tmpl deleted file mode 100644 index 78d6031..0000000 --- a/Documentation/DocBook/media-indices.tmpl +++ /dev/null @@ -1,89 +0,0 @@ -<!-- Generated file! Do not edit. --> - -<index><title>List of Types</title> -<indexentry><primaryie><link linkend='v4l2-std-id'>v4l2_std_id</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-buf-type'>v4l2_buf_type</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-colorspace'>v4l2_colorspace</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-ctrl-type'>v4l2_ctrl_type</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-exposure-auto-type'>v4l2_exposure_auto_type</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-field'>v4l2_field</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-frmivaltypes'>v4l2_frmivaltypes</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-frmsizetypes'>v4l2_frmsizetypes</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-memory'>v4l2_memory</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-ac3-bitrate'>v4l2_mpeg_audio_ac3_bitrate</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-crc'>v4l2_mpeg_audio_crc</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-emphasis'>v4l2_mpeg_audio_emphasis</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-encoding'>v4l2_mpeg_audio_encoding</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-l1-bitrate'>v4l2_mpeg_audio_l1_bitrate</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-l2-bitrate'>v4l2_mpeg_audio_l2_bitrate</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-l3-bitrate'>v4l2_mpeg_audio_l3_bitrate</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-mode'>v4l2_mpeg_audio_mode</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-mode-extension'>v4l2_mpeg_audio_mode_extension</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-sampling-freq'>v4l2_mpeg_audio_sampling_freq</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='chroma-spatial-filter-type'>v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='luma-spatial-filter-type'>v4l2_mpeg_cx2341x_video_luma_spatial_filter_type</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-cx2341x-video-median-filter-type'>v4l2_mpeg_cx2341x_video_median_filter_type</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-cx2341x-video-spatial-filter-mode'>v4l2_mpeg_cx2341x_video_spatial_filter_mode</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-cx2341x-video-temporal-filter-mode'>v4l2_mpeg_cx2341x_video_temporal_filter_mode</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-stream-type'>v4l2_mpeg_stream_type</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-stream-vbi-fmt'>v4l2_mpeg_stream_vbi_fmt</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-video-aspect'>v4l2_mpeg_video_aspect</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-video-bitrate-mode'>v4l2_mpeg_video_bitrate_mode</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-mpeg-video-encoding'>v4l2_mpeg_video_encoding</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-power-line-frequency'>v4l2_power_line_frequency</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-priority'>v4l2_priority</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-tuner-type'>v4l2_tuner_type</link></primaryie></indexentry> -<indexentry><primaryie>enum <link linkend='v4l2-preemphasis'>v4l2_preemphasis</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-audio'>v4l2_audio</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-audioout'>v4l2_audioout</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-bt-timings'>v4l2_bt_timings</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-buffer'>v4l2_buffer</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-capability'>v4l2_capability</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-captureparm'>v4l2_captureparm</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-clip'>v4l2_clip</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-control'>v4l2_control</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-crop'>v4l2_crop</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-cropcap'>v4l2_cropcap</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-dbg-chip-ident'>v4l2_dbg_chip_ident</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-dbg-match'>v4l2_dbg_match</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-dbg-register'>v4l2_dbg_register</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-dv-enum-preset'>v4l2_dv_enum_preset</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-dv-preset'>v4l2_dv_preset</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-dv-timings'>v4l2_dv_timings</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-enc-idx'>v4l2_enc_idx</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-enc-idx-entry'>v4l2_enc_idx_entry</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-encoder-cmd'>v4l2_encoder_cmd</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-ext-control'>v4l2_ext_control</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-ext-controls'>v4l2_ext_controls</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-fmtdesc'>v4l2_fmtdesc</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-format'>v4l2_format</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-fract'>v4l2_fract</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-framebuffer'>v4l2_framebuffer</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-frequency'>v4l2_frequency</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-frmival-stepwise'>v4l2_frmival_stepwise</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-frmivalenum'>v4l2_frmivalenum</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-frmsize-discrete'>v4l2_frmsize_discrete</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-frmsize-stepwise'>v4l2_frmsize_stepwise</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-frmsizeenum'>v4l2_frmsizeenum</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-hw-freq-seek'>v4l2_hw_freq_seek</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-input'>v4l2_input</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-jpegcompression'>v4l2_jpegcompression</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-modulator'>v4l2_modulator</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-mpeg-vbi-fmt-ivtv'>v4l2_mpeg_vbi_fmt_ivtv</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-output'>v4l2_output</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-outputparm'>v4l2_outputparm</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-pix-format'>v4l2_pix_format</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-queryctrl'>v4l2_queryctrl</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-querymenu'>v4l2_querymenu</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-rect'>v4l2_rect</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-requestbuffers'>v4l2_requestbuffers</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-sliced-vbi-cap'>v4l2_sliced_vbi_cap</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-sliced-vbi-data'>v4l2_sliced_vbi_data</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-sliced-vbi-format'>v4l2_sliced_vbi_format</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-standard'>v4l2_standard</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-streamparm'>v4l2_streamparm</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-timecode'>v4l2_timecode</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-tuner'>v4l2_tuner</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-vbi-format'>v4l2_vbi_format</link></primaryie></indexentry> -<indexentry><primaryie>struct <link linkend='v4l2-window'>v4l2_window</link></primaryie></indexentry> -</index> diff --git a/Documentation/DocBook/media/Makefile b/Documentation/DocBook/media/Makefile new file mode 100644 index 0000000..6628b4b --- /dev/null +++ b/Documentation/DocBook/media/Makefile @@ -0,0 +1,386 @@ +### +# Media build rules - Auto-generates media contents/indexes and *.h xml's +# + +SHELL=/bin/bash + +MEDIA_OBJ_DIR=$(objtree)/Documentation/DocBook/ +MEDIA_SRC_DIR=$(srctree)/Documentation/DocBook/media + +MEDIA_TEMP = media-entities.tmpl \ + media-indices.tmpl \ + videodev2.h.xml \ + v4l2.xml \ + audio.h.xml \ + ca.h.xml \ + dmx.h.xml \ + frontend.h.xml \ + net.h.xml \ + video.h.xml \ + +IMGFILES := $(patsubst %.b64,%, $(notdir $(shell ls $(MEDIA_SRC_DIR)/*.b64))) +OBJIMGFILES := $(addprefix $(MEDIA_OBJ_DIR)/, $(IMGFILES)) +GENFILES := $(addprefix $(MEDIA_OBJ_DIR)/, $(MEDIA_TEMP)) + +PHONY += cleanmediadocs + +cleanmediadocs: + -@rm `find $(MEDIA_OBJ_DIR) -type l` $(GENFILES) $(OBJIMGFILES) 2>/dev/null + +$(obj)/media_api.xml: $(GENFILES) FORCE + +#$(MEDIA_OBJ_DIR)/media_api.html: $(MEDIA_OBJ_DIR)/media_api.xml +#$(MEDIA_OBJ_DIR)/media_api.pdf: $(MEDIA_OBJ_DIR)/media_api.xml +#$(MEDIA_OBJ_DIR)/media_api.ps: $(MEDIA_OBJ_DIR)/media_api.xml + +V4L_SGMLS = \ + $(shell ls $(MEDIA_SRC_DIR)/v4l/*.xml|perl -ne 'print "$$1 " if (m,.*/(.*)\n,)') \ + capture.c.xml \ + keytable.c.xml \ + v4l2grab.c.xml + +DVB_SGMLS = \ + $(shell ls $(MEDIA_SRC_DIR)/dvb/*.xml|perl -ne 'print "$$1 " if (m,.*/(.*)\n,)') + +MEDIA_SGMLS = $(addprefix ./,$(V4L_SGMLS)) $(addprefix ./,$(DVB_SGMLS)) $(addprefix ./,$(MEDIA_TEMP)) + +FUNCS = \ + close \ + ioctl \ + mmap \ + munmap \ + open \ + poll \ + read \ + select \ + write \ + +IOCTLS = \ + $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/videodev2.h) \ + $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/audio.h) \ + $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/ca.h) \ + $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/dmx.h) \ + $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/frontend.h) \ + $(shell perl -ne 'print "$$1 " if /\#define\s+([A-Z][^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/net.h) \ + $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/video.h) \ + $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/media.h) \ + $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/v4l2-subdev.h) \ + VIDIOC_SUBDEV_G_FRAME_INTERVAL \ + VIDIOC_SUBDEV_S_FRAME_INTERVAL \ + VIDIOC_SUBDEV_ENUM_MBUS_CODE \ + VIDIOC_SUBDEV_ENUM_FRAME_SIZE \ + VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \ + +TYPES = \ + $(shell perl -ne 'print "$$1 " if /^typedef\s+[^\s]+\s+([^\s]+)\;/' $(srctree)/include/linux/videodev2.h) \ + $(shell perl -ne 'print "$$1 " if /^}\s+([a-z0-9_]+_t)/' $(srctree)/include/linux/dvb/frontend.h) + +ENUMS = \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/audio.h) \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/ca.h) \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/dmx.h) \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/frontend.h) \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/net.h) \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/video.h) \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h) \ + $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h) + +STRUCTS = \ + $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \ + $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s\{]+)\s*/)' $(srctree)/include/linux/dvb/audio.h) \ + $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/ca.h) \ + $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/dmx.h) \ + $(shell perl -ne 'print "$$1 " if (!/dtv\_cmds\_h/ && /^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/frontend.h) \ + $(shell perl -ne 'print "$$1 " if (/^struct\s+([A-Z][^\s]+)\s+/)' $(srctree)/include/linux/dvb/net.h) \ + $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/video.h) \ + $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \ + $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h) \ + $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h) + +ERRORS = \ + E2BIG \ + EACCES \ + EAGAIN \ + EBADF \ + EBADFD \ + EBADR \ + EBADRQC \ + EBUSY \ + ECHILD \ + ECONNRESET \ + EDEADLK \ + EDOM \ + EEXIST \ + EFAULT \ + EFBIG \ + EILSEQ \ + EINIT \ + EINPROGRESS \ + EINTR \ + EINVAL \ + EIO \ + EMFILE \ + ENFILE \ + ENOBUFS \ + ENODATA \ + ENODEV \ + ENOENT \ + ENOIOCTLCMD \ + ENOMEM \ + ENOSPC \ + ENOSR \ + ENOSYS \ + ENOTSUP \ + ENOTSUPP \ + ENOTTY \ + ENXIO \ + EOPNOTSUPP \ + EOVERFLOW \ + EPERM \ + EPIPE \ + EPROTO \ + ERANGE \ + EREMOTE \ + EREMOTEIO \ + ERESTART \ + ERESTARTSYS \ + ESHUTDOWN \ + ESPIPE \ + ETIME \ + ETIMEDOUT \ + EUSERS \ + EWOULDBLOCK \ + EXDEV \ + +ESCAPE = \ + -e "s/&/\\&/g" \ + -e "s/</\\</g" \ + -e "s/>/\\>/g" + +FILENAME = \ + -e s,"^[^\/]*/",, \ + -e s/"\\.xml"// \ + -e s/"\\.tmpl"// \ + -e s/\\\./-/g \ + -e s/"^func-"// \ + -e s/"^pixfmt-"// \ + -e s/"^vidioc-"// + +# Generate references to these structs in videodev2.h.xml. +DOCUMENTED = \ + -e "s/\(enum *\)v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1<link linkend=\"\2\">v4l2_mpeg_cx2341x_video_\2<\/link>/g" \ + -e "s/\(\(enum\|struct\) *\)\(v4l2_[a-zA-Z0-9_]*\)/\1<link linkend=\"\3\">\3<\/link>/g" \ + -e "s/\(V4L2_PIX_FMT_[A-Z0-9_]\+\) /<link linkend=\"\1\">\1<\/link> /g" \ + -e ":a;s/\(linkend=\".*\)_\(.*\">\)/\1-\2/;ta" \ + -e "s/v4l2\-mpeg\-vbi\-ITV0/v4l2-mpeg-vbi-itv0-1/g" + +DVB_DOCUMENTED = \ + -e "s/\(linkend\=\"\)FE_SET_PROPERTY/\1FE_GET_PROPERTY/g" \ + -e "s,\(struct\s\+\)\([a-z0-9_]\+\)\(\s\+{\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \ + -e "s,\(}\s\+\)\([a-z0-9_]\+_t\+\),\1\<link linkend=\"\2\">\2\<\/link\>,g" \ + -e "s,\(define\s\+\)\(DTV_[A-Z0-9_]\+\)\(\s\+[0-9]\+\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \ + -e "s,<link\s\+linkend=\".*\">\(DTV_IOCTL_MAX_MSGS\|dtv_cmds_h\|__.*_old\)<\/link>,\1,g" \ + -e ":a;s/\(linkend=\".*\)_\(.*\">\)/\1-\2/;ta" \ + -e "s,\(audio-mixer\|audio-karaoke\|audio-status\|ca-slot-info\|ca-descr-info\|ca-caps\|ca-msg\|ca-descr\|ca-pid\|dmx-filter\|dmx-caps\|video-system\|video-highlight\|video-spu\|video-spu-palette\|video-navi-pack\)-t,\1,g" \ + -e "s,DTV-ISDBT-LAYER[A-C],DTV-ISDBT-LAYER,g" \ + -e "s,\(define\s\+\)\([A-Z0-9_]\+\)\(\s\+_IO\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \ + -e "s,<link\s\+linkend=\".*\">\(__.*_OLD\)<\/link>,\1,g" \ + +# +# Media targets and dependencies +# + +install_media_images = \ + $(Q)cp $(OBJIMGFILES) $(MEDIA_OBJ_DIR)/media_api + +$(MEDIA_OBJ_DIR)/%: $(MEDIA_SRC_DIR)/%.b64 + $(Q)base64 -d $< >$@ + +$(MEDIA_OBJ_DIR)/v4l2.xml: $(OBJIMGFILES) + @$($(quiet)gen_xml) + @(ln -sf $(MEDIA_SRC_DIR)/v4l/*xml $(MEDIA_OBJ_DIR)/) + @(ln -sf $(MEDIA_SRC_DIR)/dvb/*xml $(MEDIA_OBJ_DIR)/) + +$(MEDIA_OBJ_DIR)/videodev2.h.xml: $(srctree)/include/linux/videodev2.h $(MEDIA_OBJ_DIR)/v4l2.xml + @$($(quiet)gen_xml) + @( \ + echo "<programlisting>") > $@ + @( \ + expand --tabs=8 < $< | \ + sed $(ESCAPE) $(DOCUMENTED) | \ + sed 's/i\.e\./&ie;/') >> $@ + @( \ + echo "</programlisting>") >> $@ + +$(MEDIA_OBJ_DIR)/audio.h.xml: $(srctree)/include/linux/dvb/audio.h $(MEDIA_OBJ_DIR)/v4l2.xml + @$($(quiet)gen_xml) + @( \ + echo "<programlisting>") > $@ + @( \ + expand --tabs=8 < $< | \ + sed $(ESCAPE) $(DVB_DOCUMENTED) | \ + sed 's/i\.e\./&ie;/') >> $@ + @( \ + echo "</programlisting>") >> $@ + +$(MEDIA_OBJ_DIR)/ca.h.xml: $(srctree)/include/linux/dvb/ca.h $(MEDIA_OBJ_DIR)/v4l2.xml + @$($(quiet)gen_xml) + @( \ + echo "<programlisting>") > $@ + @( \ + expand --tabs=8 < $< | \ + sed $(ESCAPE) $(DVB_DOCUMENTED) | \ + sed 's/i\.e\./&ie;/') >> $@ + @( \ + echo "</programlisting>") >> $@ + +$(MEDIA_OBJ_DIR)/dmx.h.xml: $(srctree)/include/linux/dvb/dmx.h $(MEDIA_OBJ_DIR)/v4l2.xml + @$($(quiet)gen_xml) + @( \ + echo "<programlisting>") > $@ + @( \ + expand --tabs=8 < $< | \ + sed $(ESCAPE) $(DVB_DOCUMENTED) | \ + sed 's/i\.e\./&ie;/') >> $@ + @( \ + echo "</programlisting>") >> $@ + +$(MEDIA_OBJ_DIR)/frontend.h.xml: $(srctree)/include/linux/dvb/frontend.h $(MEDIA_OBJ_DIR)/v4l2.xml + @$($(quiet)gen_xml) + @( \ + echo "<programlisting>") > $@ + @( \ + expand --tabs=8 < $< | \ + sed $(ESCAPE) $(DVB_DOCUMENTED) | \ + sed 's/i\.e\./&ie;/') >> $@ + @( \ + echo "</programlisting>") >> $@ + +$(MEDIA_OBJ_DIR)/net.h.xml: $(srctree)/include/linux/dvb/net.h $(MEDIA_OBJ_DIR)/v4l2.xml + @$($(quiet)gen_xml) + @( \ + echo "<programlisting>") > $@ + @( \ + expand --tabs=8 < $< | \ + sed $(ESCAPE) $(DVB_DOCUMENTED) | \ + sed 's/i\.e\./&ie;/') >> $@ + @( \ + echo "</programlisting>") >> $@ + +$(MEDIA_OBJ_DIR)/video.h.xml: $(srctree)/include/linux/dvb/video.h $(MEDIA_OBJ_DIR)/v4l2.xml + @$($(quiet)gen_xml) + @( \ + echo "<programlisting>") > $@ + @( \ + expand --tabs=8 < $< | \ + sed $(ESCAPE) $(DVB_DOCUMENTED) | \ + sed 's/i\.e\./&ie;/') >> $@ + @( \ + echo "</programlisting>") >> $@ + +$(MEDIA_OBJ_DIR)/media-entities.tmpl: $(MEDIA_OBJ_DIR)/v4l2.xml + @$($(quiet)gen_xml) + @( \ + echo "<!-- Generated file! Do not edit. -->") >$@ + @( \ + echo -e "\n<!-- Functions -->") >>$@ + @( \ + for ident in $(FUNCS) ; do \ + entity=`echo $$ident | tr _ -` ; \ + echo "<!ENTITY func-$$entity \"<link" \ + "linkend='func-$$entity'><function>$$ident()</function></link>\">" \ + >>$@ ; \ + done) + @( \ + echo -e "\n<!-- Ioctls -->") >>$@ + @( \ + for ident in $(IOCTLS) ; do \ + entity=`echo $$ident | tr _ -` ; \ + id=`grep "<refname>$$ident" $(MEDIA_OBJ_DIR)/vidioc-*.xml | sed -r s,"^.*/(.*).xml.*","\1",` ; \ + echo "<!ENTITY $$entity \"<link" \ + "linkend='$$id'><constant>$$ident</constant></link>\">" \ + >>$@ ; \ + done) + @( \ + echo -e "\n<!-- Types -->") >>$@ + @( \ + for ident in $(TYPES) ; do \ + entity=`echo $$ident | tr _ -` ; \ + echo "<!ENTITY $$entity \"<link" \ + "linkend='$$entity'>$$ident</link>\">" >>$@ ; \ + done) + @( \ + echo -e "\n<!-- Enums -->") >>$@ + @( \ + for ident in $(ENUMS) ; do \ + entity=`echo $$ident | sed -e "s/v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1/" | tr _ -` ; \ + echo "<!ENTITY $$entity \"enum <link" \ + "linkend='$$entity'>$$ident</link>\">" >>$@ ; \ + done) + @( \ + echo -e "\n<!-- Structures -->") >>$@ + @( \ + for ident in $(STRUCTS) ; do \ + entity=`echo $$ident | tr _ - | sed s/v4l2-mpeg-vbi-ITV0/v4l2-mpeg-vbi-itv0-1/g` ; \ + echo "<!ENTITY $$entity \"struct <link" \ + "linkend='$$entity'>$$ident</link>\">" >>$@ ; \ + done) + @( \ + echo -e "\n<!-- Error Codes -->") >>$@ + @( \ + for ident in $(ERRORS) ; do \ + echo "<!ENTITY $$ident \"<errorcode>$$ident</errorcode>" \ + "error code\">" >>$@ ; \ + done) + @( \ + echo -e "\n<!-- Subsections -->") >>$@ + @( \ + for file in $(MEDIA_SGMLS) ; do \ + entity=`echo "$$file" | sed $(FILENAME) -e s/"^([^-]*)"/sub\1/` ; \ + if ! echo "$$file" | \ + grep -q -E -e '^(func|vidioc|pixfmt)-' ; then \ + echo "<!ENTITY sub-$$entity SYSTEM \"$$file\">" >>$@ ; \ + fi ; \ + done) + @( \ + echo -e "\n<!-- Function Reference -->") >>$@ + @( \ + for file in $(MEDIA_SGMLS) ; do \ + if echo "$$file" | \ + grep -q -E -e '(func|vidioc|pixfmt)-' ; then \ + entity=`echo "$$file" |sed $(FILENAME)` ; \ + echo "<!ENTITY $$entity SYSTEM \"$$file\">" >>$@ ; \ + fi ; \ + done) + +# Jade can auto-generate a list-of-tables, which includes all structs, +# but we only want data types, all types, and sorted please. +$(MEDIA_OBJ_DIR)/media-indices.tmpl: $(MEDIA_OBJ_DIR)/v4l2.xml + @$($(quiet)gen_xml) + @( \ + echo "<!-- Generated file! Do not edit. -->") >$@ + @( \ + echo -e "\n<index><title>List of Types</title>") >>$@ + @( \ + for ident in $(TYPES) ; do \ + id=`echo $$ident | tr _ -` ; \ + echo "<indexentry><primaryie><link" \ + "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \ + done) + @( \ + for ident in $(ENUMS) ; do \ + id=`echo $$ident | sed -e "s/v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1/" | tr _ -`; \ + echo "<indexentry><primaryie>enum <link" \ + "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \ + done) + @( \ + for ident in $(STRUCTS) ; do \ + id=`echo $$ident | tr _ - | sed s/v4l2-mpeg-vbi-ITV0/v4l2-mpeg-vbi-itv0-1/g` ; \ + echo "<indexentry><primaryie>struct <link" \ + "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \ + done) + @( \ + echo "</index>") >>$@ + diff --git a/Documentation/DocBook/media/bayer.png.b64 b/Documentation/DocBook/media/bayer.png.b64 new file mode 100644 index 0000000..ccdf2bc --- /dev/null +++ b/Documentation/DocBook/media/bayer.png.b64 @@ -0,0 +1,171 @@ +iVBORw0KGgoAAAANSUhEUgAAAlgAAACqCAMAAABGfcHVAAAAAXNSR0IArs4c6QAAAwBQTFRFAAIA +CAICAAQVEQEBAgsAJgECAAogAwsTAQopHQYBNAEAAAxNARQAERIQAhoDABwAABZEHRQKGRYKQw0F +ACMBACUAERwpHR4cVRAFBR5rZhADACR2JiIhBDAGAiWGgQ4AcxQABDYACSeQMSYlJykmESxYlQ4A +PSYZIS05OSsJHS5JOC8kAEMDUC8SADXLNDUzADbEAEsAADX/2RABCFIAAD/qxB0AAD//BFgAK0Vp +WT4r3hwA3RsTRERAAEf/5CIA2iYCCUv+WUgz7iIAOk5g3CgVSU5SiD8uB2sABm8AE1X/U1RQOFyL +4jkfIlz/RV98M1j+G2H/fVk23jtD4T0pXl9ieFtGcV894UIiYWJfAIwA50gOV2p+4kssO2j+dGZx +bG1qVmj/OHH/aHJzfnBX5lQ7B50AZnahdXd0AKUG5V1ARnz/6mErCqgAAKsAent46GBIW4GhAK0A +AK8B42FtALIOin9/ALUAiIOBALkAVIf/6WxWg4eBi4SKJrEAmoVtdY2geoP/rYVXhoyOqYVuJbUh +IrgWX5D/jo6J7nszP7gAsI9S63xnN70zZqO/fZzCOb4+cZr+64dy8otYnJ6b7ImDRcM56IqcWMEo +oJb/N8ZoTMRL7Y9/QchcsaOTo6eohaj/7ZqKXspXj6v9xal+oK+7d7vTUM+Afco5r7CumLTVStKV +bs9ukbb/9qx/9q9l8queoLv/e9R66beG7rDImNRhi9aDwsPAs8bWzcK2cd67jtqP5MWUodyB8b+1 +tMr/z8L/j9+kbOXWnN2ZstD7yc7Rzs7Ly9xb183UwdD/+si/qeOmvuKIx9fj4tPCtuWiqOrL+tS2 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+2iNW3985XeFh4mLjY+Rk5WUeYOdn6Gjpaepq62vsbO1t7m7vb/Bw8XHycvNz9HT1dfZ293f4ePl5 ++nr7e/x8/X3+G37/f4ABBQ4kWNDgQYQJFS5k2NDhQ4gRJdKLAAA7 diff --git a/Documentation/DocBook/dvb/.gitignore b/Documentation/DocBook/media/dvb/.gitignore index d7ec32e..d7ec32e 100644 --- a/Documentation/DocBook/dvb/.gitignore +++ b/Documentation/DocBook/media/dvb/.gitignore diff --git a/Documentation/DocBook/dvb/audio.xml b/Documentation/DocBook/media/dvb/audio.xml index eeb96b8..d643862 100644 --- a/Documentation/DocBook/dvb/audio.xml +++ b/Documentation/DocBook/media/dvb/audio.xml @@ -14,17 +14,17 @@ the omission of the audio and video device. audio device. </para> -<section id="audio_stream_source_t"> +<section id="audio-stream-source-t"> <title>audio_stream_source_t</title> <para>The audio stream source is set through the AUDIO_SELECT_SOURCE call and can take the following values, depending on whether we are replaying from an internal (demux) or external (user write) source. </para> <programlisting> - typedef enum { - AUDIO_SOURCE_DEMUX, - AUDIO_SOURCE_MEMORY - } audio_stream_source_t; +typedef enum { + AUDIO_SOURCE_DEMUX, + AUDIO_SOURCE_MEMORY +} audio_stream_source_t; </programlisting> <para>AUDIO_SOURCE_DEMUX selects the demultiplexer (fed either by the frontend or the DVR device) as the source of the video stream. If AUDIO_SOURCE_MEMORY @@ -33,61 +33,64 @@ call. </para> </section> -<section id="audio_play_state_t"> +<section id="audio-play-state-t"> <title>audio_play_state_t</title> <para>The following values can be returned by the AUDIO_GET_STATUS call representing the state of audio playback. </para> <programlisting> - typedef enum { - AUDIO_STOPPED, - AUDIO_PLAYING, - AUDIO_PAUSED - } audio_play_state_t; +typedef enum { + AUDIO_STOPPED, + AUDIO_PLAYING, + AUDIO_PAUSED +} audio_play_state_t; </programlisting> </section> -<section id="audio_channel_select_t"> +<section id="audio-channel-select-t"> <title>audio_channel_select_t</title> <para>The audio channel selected via AUDIO_CHANNEL_SELECT is determined by the following values. </para> <programlisting> - typedef enum { - AUDIO_STEREO, - AUDIO_MONO_LEFT, - AUDIO_MONO_RIGHT, - } audio_channel_select_t; +typedef enum { + AUDIO_STEREO, + AUDIO_MONO_LEFT, + AUDIO_MONO_RIGHT, + AUDIO_MONO, + AUDIO_STEREO_SWAPPED +} audio_channel_select_t; </programlisting> </section> -<section id="struct_audio_status"> +<section id="audio-status"> <title>struct audio_status</title> <para>The AUDIO_GET_STATUS call returns the following structure informing about various states of the playback operation. </para> <programlisting> - typedef struct audio_status { - boolean AV_sync_state; - boolean mute_state; - audio_play_state_t play_state; - audio_stream_source_t stream_source; - audio_channel_select_t channel_select; - boolean bypass_mode; - } audio_status_t; +typedef struct audio_status { + boolean AV_sync_state; + boolean mute_state; + audio_play_state_t play_state; + audio_stream_source_t stream_source; + audio_channel_select_t channel_select; + boolean bypass_mode; + audio_mixer_t mixer_state; +} audio_status_t; </programlisting> </section> -<section id="struct_audio_mixer"> +<section id="audio-mixer"> <title>struct audio_mixer</title> <para>The following structure is used by the AUDIO_SET_MIXER call to set the audio volume. </para> <programlisting> - typedef struct audio_mixer { - unsigned int volume_left; - unsigned int volume_right; - } audio_mixer_t; +typedef struct audio_mixer { + unsigned int volume_left; + unsigned int volume_right; +} audio_mixer_t; </programlisting> </section> @@ -109,17 +112,17 @@ bits set according to the hardwares capabilities. </programlisting> </section> -<section id="struct_audio_karaoke"> +<section id="audio-karaoke"> <title>struct audio_karaoke</title> <para>The ioctl AUDIO_SET_KARAOKE uses the following format: </para> <programlisting> - typedef - struct audio_karaoke{ - int vocal1; - int vocal2; - int melody; - } audio_karaoke_t; +typedef +struct audio_karaoke { + int vocal1; + int vocal2; + int melody; +} audio_karaoke_t; </programlisting> <para>If Vocal1 or Vocal2 are non-zero, they get mixed into left and right t at 70% each. If both, Vocal1 and Vocal2 are non-zero, Vocal1 gets mixed into the left channel and Vocal2 into the @@ -128,7 +131,7 @@ and right. </para> </section> -<section id="audio_attributes"> +<section id="audio-attributes-t"> <title>audio attributes</title> <para>The following attributes can be set by a call to AUDIO_SET_ATTRIBUTES: </para> @@ -217,8 +220,7 @@ and right. <para>(blocking mode is the default)</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>ENODEV</para> @@ -228,13 +230,6 @@ and right. </entry> </row><row><entry align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> <para>EBUSY</para> </entry><entry align="char"> @@ -276,8 +271,7 @@ and right. <para>File descriptor returned by a previous call to open().</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EBADF</para> @@ -332,8 +326,7 @@ and right. <para>Size of buf.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EPERM</para> @@ -358,7 +351,7 @@ and right. </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="AUDIO_STOP" role="subsection"><title>AUDIO_STOP</title> <para>DESCRIPTION </para> @@ -391,25 +384,9 @@ role="subsection"><title>AUDIO_STOP</title> <para>Equals AUDIO_STOP for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_PLAY" role="subsection"><title>AUDIO_PLAY</title> <para>DESCRIPTION </para> @@ -443,25 +420,9 @@ role="subsection"><title>AUDIO_PLAY</title> <para>Equals AUDIO_PLAY for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_PAUSE" role="subsection"><title>AUDIO_PAUSE</title> <para>DESCRIPTION </para> @@ -503,25 +464,49 @@ role="subsection"><title>AUDIO_PAUSE</title> <para>Equals AUDIO_PAUSE for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS +&return-value-dvb; + +</section><section id="AUDIO_CONTINUE" +role="subsection"><title>AUDIO_CONTINUE</title> +<para>DESCRIPTION +</para> +<informaltable><tgroup cols="1"><tbody><row><entry + align="char"> +<para>This ioctl restarts the decoding and playing process previously paused +with AUDIO_PAUSE command.</para> +</entry> + </row><row><entry + align="char"> +<para>It only works if the stream were previously stopped with AUDIO_PAUSE</para> +</entry> + </row></tbody></tgroup></informaltable> +<para>SYNOPSIS +</para> +<informaltable><tgroup cols="1"><tbody><row><entry + align="char"> +<para>int ioctl(int fd, int request = AUDIO_CONTINUE);</para> +</entry> + </row></tbody></tgroup></informaltable> +<para>PARAMETERS </para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> +<para>int fd</para> </entry><entry align="char"> -<para>fd is not a valid open file descriptor.</para> +<para>File descriptor returned by a previous call to open().</para> </entry> </row><row><entry align="char"> -<para>EINTERNAL</para> +<para>int request</para> </entry><entry align="char"> -<para>Internal error.</para> +<para>Equals AUDIO_CONTINUE for this command.</para> </entry> </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_SELECT_SOURCE" role="subsection"><title>AUDIO_SELECT_SOURCE</title> <para>DESCRIPTION </para> @@ -567,32 +552,9 @@ role="subsection"><title>AUDIO_SELECT_SOURCE</title> stream.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Illegal input parameter.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_SET_MUTE" role="subsection"><title>AUDIO_SET_MUTE</title> <para>DESCRIPTION </para> @@ -646,32 +608,9 @@ role="subsection"><title>AUDIO_SET_MUTE</title> <para>FALSE Audio Un-mute</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Illegal input parameter.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_SET_AV_SYNC" role="subsection"><title>AUDIO_SET_AV_SYNC</title> <para>DESCRIPTION </para> @@ -725,32 +664,9 @@ role="subsection"><title>AUDIO_SET_AV_SYNC</title> <para>FALSE AV-sync OFF</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Illegal input parameter.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_SET_BYPASS_MODE" role="subsection"><title>AUDIO_SET_BYPASS_MODE</title> <para>DESCRIPTION </para> @@ -808,32 +724,9 @@ role="subsection"><title>AUDIO_SET_BYPASS_MODE</title> <para>FALSE Bypass is enabled</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Illegal input parameter.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_CHANNEL_SELECT" role="subsection"><title>AUDIO_CHANNEL_SELECT</title> <para>DESCRIPTION </para> @@ -877,32 +770,9 @@ role="subsection"><title>AUDIO_CHANNEL_SELECT</title> stereo).</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Illegal input parameter ch.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_GET_STATUS" role="subsection"><title>AUDIO_GET_STATUS</title> <para>DESCRIPTION </para> @@ -945,32 +815,9 @@ role="subsection"><title>AUDIO_GET_STATUS</title> <para>Returns the current state of Audio Device.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>status points to invalid address.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_GET_CAPABILITIES" role="subsection"><title>AUDIO_GET_CAPABILITIES</title> <para>DESCRIPTION </para> @@ -1013,32 +860,9 @@ role="subsection"><title>AUDIO_GET_CAPABILITIES</title> <para>Returns a bit array of supported sound formats.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>cap points to an invalid address.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_CLEAR_BUFFER" role="subsection"><title>AUDIO_CLEAR_BUFFER</title> <para>DESCRIPTION </para> @@ -1072,25 +896,9 @@ role="subsection"><title>AUDIO_CLEAR_BUFFER</title> <para>Equals AUDIO_CLEAR_BUFFER for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_SET_ID" role="subsection"><title>AUDIO_SET_ID</title> <para>DESCRIPTION </para> @@ -1136,32 +944,9 @@ role="subsection"><title>AUDIO_SET_ID</title> <para>audio sub-stream id</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Invalid sub-stream id.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_SET_MIXER" role="subsection"><title>AUDIO_SET_MIXER</title> <para>DESCRIPTION </para> @@ -1202,32 +987,9 @@ role="subsection"><title>AUDIO_SET_MIXER</title> <para>mixer settings.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>mix points to an invalid address.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="AUDIO_SET_STREAMTYPE" role="subsection"><title>AUDIO_SET_STREAMTYPE</title> <para>DESCRIPTION </para> @@ -1270,17 +1032,9 @@ role="subsection"><title>AUDIO_SET_STREAMTYPE</title> <para>stream type</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -1288,7 +1042,7 @@ role="subsection"><title>AUDIO_SET_STREAMTYPE</title> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="AUDIO_SET_EXT_ID" role="subsection"><title>AUDIO_SET_EXT_ID</title> <para>DESCRIPTION </para> @@ -1330,17 +1084,9 @@ role="subsection"><title>AUDIO_SET_EXT_ID</title> <para>audio sub_stream_id</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -1348,7 +1094,7 @@ role="subsection"><title>AUDIO_SET_EXT_ID</title> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="AUDIO_SET_ATTRIBUTES" role="subsection"><title>AUDIO_SET_ATTRIBUTES</title> <para>DESCRIPTION </para> @@ -1391,17 +1137,9 @@ role="subsection"><title>AUDIO_SET_ATTRIBUTES</title> <para>audio attributes according to section ??</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -1409,7 +1147,7 @@ role="subsection"><title>AUDIO_SET_ATTRIBUTES</title> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="AUDIO_SET_KARAOKE" role="subsection"><title>AUDIO_SET_KARAOKE</title> <para>DESCRIPTION </para> @@ -1422,7 +1160,7 @@ role="subsection"><title>AUDIO_SET_KARAOKE</title> </para> <informaltable><tgroup cols="1"><tbody><row><entry align="char"> -<para>int ioctl(fd, int request = AUDIO_SET_STREAMTYPE, +<para>int ioctl(fd, int request = AUDIO_SET_KARAOKE, audio_karaoke_t ⋆karaoke);</para> </entry> </row></tbody></tgroup></informaltable> @@ -1440,7 +1178,7 @@ role="subsection"><title>AUDIO_SET_KARAOKE</title> <para>int request</para> </entry><entry align="char"> -<para>Equals AUDIO_SET_STREAMTYPE for this +<para>Equals AUDIO_SET_KARAOKE for this command.</para> </entry> </row><row><entry @@ -1452,17 +1190,9 @@ role="subsection"><title>AUDIO_SET_KARAOKE</title> <para>karaoke settings according to section ??.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> diff --git a/Documentation/DocBook/dvb/ca.xml b/Documentation/DocBook/media/dvb/ca.xml index b1f1d2f..5c4adb4 100644 --- a/Documentation/DocBook/dvb/ca.xml +++ b/Documentation/DocBook/media/dvb/ca.xml @@ -8,75 +8,85 @@ including <emphasis role="tt">linux/dvb/ca.h</emphasis> in your application. <title>CA Data Types</title> -<section id="ca_slot_info_t"> +<section id="ca-slot-info"> <title>ca_slot_info_t</title> <programlisting> - /⋆ slot interface types and info ⋆/ +typedef struct ca_slot_info { + int num; /⋆ slot number ⋆/ - typedef struct ca_slot_info_s { - int num; /⋆ slot number ⋆/ + int type; /⋆ CA interface this slot supports ⋆/ +#define CA_CI 1 /⋆ CI high level interface ⋆/ +#define CA_CI_LINK 2 /⋆ CI link layer level interface ⋆/ +#define CA_CI_PHYS 4 /⋆ CI physical layer level interface ⋆/ +#define CA_DESCR 8 /⋆ built-in descrambler ⋆/ +#define CA_SC 128 /⋆ simple smart card interface ⋆/ - int type; /⋆ CA interface this slot supports ⋆/ - #define CA_CI 1 /⋆ CI high level interface ⋆/ - #define CA_CI_LINK 2 /⋆ CI link layer level interface ⋆/ - #define CA_CI_PHYS 4 /⋆ CI physical layer level interface ⋆/ - #define CA_SC 128 /⋆ simple smart card interface ⋆/ - - unsigned int flags; - #define CA_CI_MODULE_PRESENT 1 /⋆ module (or card) inserted ⋆/ - #define CA_CI_MODULE_READY 2 - } ca_slot_info_t; + unsigned int flags; +#define CA_CI_MODULE_PRESENT 1 /⋆ module (or card) inserted ⋆/ +#define CA_CI_MODULE_READY 2 +} ca_slot_info_t; </programlisting> </section> -<section id="ca_descr_info_t"> +<section id="ca-descr-info"> <title>ca_descr_info_t</title> - <programlisting> - typedef struct ca_descr_info_s { - unsigned int num; /⋆ number of available descramblers (keys) ⋆/ - unsigned int type; /⋆ type of supported scrambling system ⋆/ - #define CA_ECD 1 - #define CA_NDS 2 - #define CA_DSS 4 - } ca_descr_info_t; +<programlisting> +typedef struct ca_descr_info { + unsigned int num; /⋆ number of available descramblers (keys) ⋆/ + unsigned int type; /⋆ type of supported scrambling system ⋆/ +#define CA_ECD 1 +#define CA_NDS 2 +#define CA_DSS 4 +} ca_descr_info_t; </programlisting> </section> -<section id="ca_cap_t"> -<title>ca_cap_t</title> - <programlisting> - typedef struct ca_cap_s { - unsigned int slot_num; /⋆ total number of CA card and module slots ⋆/ - unsigned int slot_type; /⋆ OR of all supported types ⋆/ - unsigned int descr_num; /⋆ total number of descrambler slots (keys) ⋆/ - unsigned int descr_type;/⋆ OR of all supported types ⋆/ +<section id="ca-caps"> +<title>ca_caps_t</title> +<programlisting> +typedef struct ca_caps { + unsigned int slot_num; /⋆ total number of CA card and module slots ⋆/ + unsigned int slot_type; /⋆ OR of all supported types ⋆/ + unsigned int descr_num; /⋆ total number of descrambler slots (keys) ⋆/ + unsigned int descr_type;/⋆ OR of all supported types ⋆/ } ca_cap_t; </programlisting> </section> -<section id="ca_msg_t"> +<section id="ca-msg"> <title>ca_msg_t</title> - <programlisting> - /⋆ a message to/from a CI-CAM ⋆/ - typedef struct ca_msg_s { - unsigned int index; - unsigned int type; - unsigned int length; - unsigned char msg[256]; - } ca_msg_t; +<programlisting> +/⋆ a message to/from a CI-CAM ⋆/ +typedef struct ca_msg { + unsigned int index; + unsigned int type; + unsigned int length; + unsigned char msg[256]; +} ca_msg_t; </programlisting> </section> -<section id="ca_descr_t"> +<section id="ca-descr"> <title>ca_descr_t</title> - <programlisting> - typedef struct ca_descr_s { - unsigned int index; - unsigned int parity; - unsigned char cw[8]; - } ca_descr_t; +<programlisting> +typedef struct ca_descr { + unsigned int index; + unsigned int parity; + unsigned char cw[8]; +} ca_descr_t; </programlisting> - </section></section> +</section> + +<section id="ca-pid"> +<title>ca-pid</title> +<programlisting> +typedef struct ca_pid { + unsigned int pid; + int index; /⋆ -1 == disable⋆/ +} ca_pid_t; +</programlisting> +</section></section> + <section id="ca_function_calls"> <title>CA Function Calls</title> @@ -148,8 +158,7 @@ including <emphasis role="tt">linux/dvb/ca.h</emphasis> in your application. <para>(blocking mode is the default)</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>ENODEV</para> @@ -207,8 +216,7 @@ including <emphasis role="tt">linux/dvb/ca.h</emphasis> in your application. <para>File descriptor returned by a previous call to open().</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EBADF</para> diff --git a/Documentation/DocBook/dvb/demux.xml b/Documentation/DocBook/media/dvb/demux.xml index 1b8c4e9..37c1790 100644 --- a/Documentation/DocBook/dvb/demux.xml +++ b/Documentation/DocBook/media/dvb/demux.xml @@ -7,15 +7,19 @@ accessed by including <emphasis role="tt">linux/dvb/dmx.h</emphasis> in your app <section id="dmx_types"> <title>Demux Data Types</title> -<section id="dmx_output_t"> +<section id="dmx-output-t"> <title>dmx_output_t</title> - <programlisting> - typedef enum - { - DMX_OUT_DECODER, - DMX_OUT_TAP, - DMX_OUT_TS_TAP - } dmx_output_t; +<programlisting> +typedef enum +{ + DMX_OUT_DECODER, /⋆ Streaming directly to decoder. ⋆/ + DMX_OUT_TAP, /⋆ Output going to a memory buffer ⋆/ + /⋆ (to be retrieved via the read command).⋆/ + DMX_OUT_TS_TAP, /⋆ Output multiplexed into a new TS ⋆/ + /⋆ (to be retrieved by reading from the ⋆/ + /⋆ logical DVR device). ⋆/ + DMX_OUT_TSDEMUX_TAP /⋆ Like TS_TAP but retrieved from the DMX device ⋆/ +} dmx_output_t; </programlisting> <para><emphasis role="tt">DMX_OUT_TAP</emphasis> delivers the stream output to the demux device on which the ioctl is called. @@ -26,96 +30,95 @@ specified. </para> </section> -<section id="dmx_input_t"> +<section id="dmx-input-t"> <title>dmx_input_t</title> - <programlisting> - typedef enum - { - DMX_IN_FRONTEND, - DMX_IN_DVR - } dmx_input_t; +<programlisting> +typedef enum +{ + DMX_IN_FRONTEND, /⋆ Input from a front-end device. ⋆/ + DMX_IN_DVR /⋆ Input from the logical DVR device. ⋆/ +} dmx_input_t; </programlisting> </section> -<section id="dmx_pes_type_t"> +<section id="dmx-pes-type-t"> <title>dmx_pes_type_t</title> - <programlisting> - typedef enum - { - DMX_PES_AUDIO, - DMX_PES_VIDEO, - DMX_PES_TELETEXT, - DMX_PES_SUBTITLE, - DMX_PES_PCR, - DMX_PES_OTHER - } dmx_pes_type_t; -</programlisting> -</section> +<programlisting> +typedef enum +{ + DMX_PES_AUDIO0, + DMX_PES_VIDEO0, + DMX_PES_TELETEXT0, + DMX_PES_SUBTITLE0, + DMX_PES_PCR0, -<section id="dmx_event_t"> -<title>dmx_event_t</title> - <programlisting> - typedef enum - { - DMX_SCRAMBLING_EV, - DMX_FRONTEND_EV - } dmx_event_t; -</programlisting> -</section> + DMX_PES_AUDIO1, + DMX_PES_VIDEO1, + DMX_PES_TELETEXT1, + DMX_PES_SUBTITLE1, + DMX_PES_PCR1, -<section id="dmx_scrambling_status_t"> -<title>dmx_scrambling_status_t</title> - <programlisting> - typedef enum - { - DMX_SCRAMBLING_OFF, - DMX_SCRAMBLING_ON - } dmx_scrambling_status_t; + DMX_PES_AUDIO2, + DMX_PES_VIDEO2, + DMX_PES_TELETEXT2, + DMX_PES_SUBTITLE2, + DMX_PES_PCR2, + + DMX_PES_AUDIO3, + DMX_PES_VIDEO3, + DMX_PES_TELETEXT3, + DMX_PES_SUBTITLE3, + DMX_PES_PCR3, + + DMX_PES_OTHER +} dmx_pes_type_t; </programlisting> </section> -<section id="dmx_filter"> +<section id="dmx-filter"> <title>struct dmx_filter</title> <programlisting> typedef struct dmx_filter - { - uint8_t filter[DMX_FILTER_SIZE]; - uint8_t mask[DMX_FILTER_SIZE]; - } dmx_filter_t; +{ + __u8 filter[DMX_FILTER_SIZE]; + __u8 mask[DMX_FILTER_SIZE]; + __u8 mode[DMX_FILTER_SIZE]; +} dmx_filter_t; </programlisting> </section> -<section id="dmx_sct_filter_params"> +<section id="dmx-sct-filter-params"> <title>struct dmx_sct_filter_params</title> - <programlisting> - struct dmx_sct_filter_params - { - uint16_t pid; - dmx_filter_t filter; - uint32_t timeout; - uint32_t flags; - #define DMX_CHECK_CRC 1 - #define DMX_ONESHOT 2 - #define DMX_IMMEDIATE_START 4 - }; +<programlisting> +struct dmx_sct_filter_params +{ + __u16 pid; + dmx_filter_t filter; + __u32 timeout; + __u32 flags; +#define DMX_CHECK_CRC 1 +#define DMX_ONESHOT 2 +#define DMX_IMMEDIATE_START 4 +#define DMX_KERNEL_CLIENT 0x8000 +}; </programlisting> </section> -<section id="dmx_pes_filter_params"> +<section id="dmx-pes-filter-params"> <title>struct dmx_pes_filter_params</title> - <programlisting> - struct dmx_pes_filter_params - { - uint16_t pid; - dmx_input_t input; - dmx_output_t output; - dmx_pes_type_t pes_type; - uint32_t flags; - }; +<programlisting> +struct dmx_pes_filter_params +{ + __u16 pid; + dmx_input_t input; + dmx_output_t output; + dmx_pes_type_t pes_type; + __u32 flags; +}; </programlisting> </section> -<section id="dmx_event"> +<section id="dmx-event"> <title>struct dmx_event</title> <programlisting> struct dmx_event @@ -130,19 +133,44 @@ specified. </programlisting> </section> -<section id="dmx_stc"> +<section id="dmx-stc"> <title>struct dmx_stc</title> - <programlisting> - struct dmx_stc { - unsigned int num; /⋆ input : which STC? 0..N ⋆/ - unsigned int base; /⋆ output: divisor for stc to get 90 kHz clock ⋆/ - uint64_t stc; /⋆ output: stc in 'base'⋆90 kHz units ⋆/ - }; +<programlisting> +struct dmx_stc { + unsigned int num; /⋆ input : which STC? 0..N ⋆/ + unsigned int base; /⋆ output: divisor for stc to get 90 kHz clock ⋆/ + __u64 stc; /⋆ output: stc in 'base'⋆90 kHz units ⋆/ +}; </programlisting> - </section> +</section> +<section id="dmx-caps"> +<title>struct dmx_caps</title> +<programlisting> + typedef struct dmx_caps { + __u32 caps; + int num_decoders; +} dmx_caps_t; +</programlisting> +</section> + +<section id="dmx-source-t"> +<title>enum dmx_source_t</title> +<programlisting> +typedef enum { + DMX_SOURCE_FRONT0 = 0, + DMX_SOURCE_FRONT1, + DMX_SOURCE_FRONT2, + DMX_SOURCE_FRONT3, + DMX_SOURCE_DVR0 = 16, + DMX_SOURCE_DVR1, + DMX_SOURCE_DVR2, + DMX_SOURCE_DVR3 +} dmx_source_t; +</programlisting> </section> +</section> <section id="dmx_fcalls"> <title>Demux Function Calls</title> @@ -211,8 +239,7 @@ specified. <para>(blocking mode is the default)</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>ENODEV</para> @@ -271,8 +298,7 @@ specified. <para>File descriptor returned by a previous call to open().</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EBADF</para> @@ -353,8 +379,7 @@ specified. <para>Size of buf.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EWOULDBLOCK</para> @@ -457,8 +482,7 @@ specified. <para>Size of buf.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EWOULDBLOCK</para> @@ -491,7 +515,7 @@ specified. </row></tbody></tgroup></informaltable> </section> -<section id="dmx_start"> +<section id="DMX_START"> <title>DMX_START</title> <para>DESCRIPTION </para> @@ -525,17 +549,9 @@ specified. <para>Equals DMX_START for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -556,7 +572,7 @@ specified. </row></tbody></tgroup></informaltable> </section> -<section id="dmx_stop"> +<section id="DMX_STOP"> <title>DMX_STOP</title> <para>DESCRIPTION </para> @@ -591,19 +607,10 @@ specified. <para>Equals DMX_STOP for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; </section> -<section id="dmx_set_filter"> +<section id="DMX_SET_FILTER"> <title>DMX_SET_FILTER</title> <para>DESCRIPTION </para> @@ -654,26 +661,10 @@ specified. <para>Pointer to structure containing filter parameters.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Invalid argument.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; </section> -<section id="dmx_set_pes_filter"> +<section id="DMX_SET_PES_FILTER"> <title>DMX_SET_PES_FILTER</title> <para>DESCRIPTION </para> @@ -727,24 +718,9 @@ specified. <para>Pointer to structure containing filter parameters.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Invalid argument.</para> -</entry> - </row><row><entry - align="char"> <para>EBUSY</para> </entry><entry align="char"> @@ -756,7 +732,7 @@ specified. </row></tbody></tgroup></informaltable> </section> -<section id="dms_set_buffer_size"> +<section id="DMX_SET_BUFFER_SIZE"> <title>DMX_SET_BUFFER_SIZE</title> <para>DESCRIPTION </para> @@ -799,27 +775,10 @@ specified. <para>Size of circular buffer.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>ENOMEM</para> -</entry><entry - align="char"> -<para>The driver was not able to allocate a buffer of the - requested size.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; </section> -<section id="dmx_get_event"> +<section id="DMX_GET_EVENT"> <title>DMX_GET_EVENT</title> <para>DESCRIPTION </para> @@ -872,24 +831,9 @@ specified. <para>Pointer to the location where the event is to be stored.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>ev points to an invalid address.</para> -</entry> - </row><row><entry - align="char"> <para>EWOULDBLOCK</para> </entry><entry align="char"> @@ -899,7 +843,7 @@ specified. </row></tbody></tgroup></informaltable> </section> -<section id="dmx_get_stc"> +<section id="DMX_GET_STC"> <title>DMX_GET_STC</title> <para>DESCRIPTION </para> @@ -946,24 +890,9 @@ specified. <para>Pointer to the location where the stc is to be stored.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>stc points to an invalid address.</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> diff --git a/Documentation/DocBook/dvb/dvbapi.xml b/Documentation/DocBook/media/dvb/dvbapi.xml index 9fad86c..2ab6ddc 100644 --- a/Documentation/DocBook/dvb/dvbapi.xml +++ b/Documentation/DocBook/media/dvb/dvbapi.xml @@ -114,8 +114,28 @@ Added ISDB-T test originally written by Patrick Boettcher &sub-examples; </chapter> <!-- END OF CHAPTERS --> + <appendix id="audio_h"> + <title>DVB Audio Header File</title> + &sub-audio-h; + </appendix> + <appendix id="ca_h"> + <title>DVB Conditional Access Header File</title> + &sub-ca-h; + </appendix> + <appendix id="dmx_h"> + <title>DVB Demux Header File</title> + &sub-dmx-h; + </appendix> <appendix id="frontend_h"> <title>DVB Frontend Header File</title> &sub-frontend-h; </appendix> + <appendix id="net_h"> + <title>DVB Network Header File</title> + &sub-net-h; + </appendix> + <appendix id="video_h"> + <title>DVB Video Header File</title> + &sub-video-h; + </appendix> diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml new file mode 100644 index 0000000..3bc8a61 --- /dev/null +++ b/Documentation/DocBook/media/dvb/dvbproperty.xml @@ -0,0 +1,855 @@ +<section id="FE_GET_SET_PROPERTY"> +<title><constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></title> +<para>This section describes the DVB version 5 extention of the DVB-API, also +called "S2API", as this API were added to provide support for DVB-S2. It was +designed to be able to replace the old frontend API. Yet, the DISEQC and +the capability ioctls weren't implemented yet via the new way.</para> +<para>The typical usage for the <constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant> +API is to replace the ioctl's were the <link linkend="dvb-frontend-parameters"> +struct <constant>dvb_frontend_parameters</constant></link> were used.</para> +<section id="dtv-property"> +<title>DTV property type</title> +<programlisting> +/* Reserved fields should be set to 0 */ +struct dtv_property { + __u32 cmd; + union { + __u32 data; + struct { + __u8 data[32]; + __u32 len; + __u32 reserved1[3]; + void *reserved2; + } buffer; + } u; + int result; +} __attribute__ ((packed)); + +/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */ +#define DTV_IOCTL_MAX_MSGS 64 +</programlisting> +</section> +<section id="dtv-properties"> +<title>DTV properties type</title> +<programlisting> +struct dtv_properties { + __u32 num; + struct dtv_property *props; +}; +</programlisting> +</section> + +<section id="FE_GET_PROPERTY"> +<title>FE_GET_PROPERTY</title> +<para>DESCRIPTION +</para> +<informaltable><tgroup cols="1"><tbody><row><entry + align="char"> +<para>This ioctl call returns one or more frontend properties. This call only + requires read-only access to the device.</para> +</entry> + </row></tbody></tgroup></informaltable> +<para>SYNOPSIS +</para> +<informaltable><tgroup cols="1"><tbody><row><entry + align="char"> +<para>int ioctl(int fd, int request = <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>, + dtv_properties ⋆props);</para> +</entry> + </row></tbody></tgroup></informaltable> +<para>PARAMETERS +</para> +<informaltable><tgroup cols="2"><tbody><row><entry align="char"> +<para>int fd</para> +</entry><entry + align="char"> +<para>File descriptor returned by a previous call to open().</para> +</entry> + </row><row><entry + align="char"> +<para>int num</para> +</entry><entry + align="char"> +<para>Equals <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link> for this command.</para> +</entry> + </row><row><entry + align="char"> +<para>struct dtv_property *props</para> +</entry><entry + align="char"> +<para>Points to the location where the front-end property commands are stored.</para> +</entry> + </row></tbody></tgroup></informaltable> +&return-value-dvb; +<informaltable><tgroup cols="2"><tbody><row> + <entry align="char"><para>EOPNOTSUPP</para></entry> + <entry align="char"><para>Property type not supported.</para></entry> + </row></tbody></tgroup></informaltable> +</section> + +<section id="FE_SET_PROPERTY"> +<title>FE_SET_PROPERTY</title> +<para>DESCRIPTION +</para> +<informaltable><tgroup cols="1"><tbody><row><entry + align="char"> +<para>This ioctl call sets one or more frontend properties. This call only + requires read-only access to the device.</para> +</entry> + </row></tbody></tgroup></informaltable> +<para>SYNOPSIS +</para> +<informaltable><tgroup cols="1"><tbody><row><entry + align="char"> +<para>int ioctl(int fd, int request = <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>, + dtv_properties ⋆props);</para> +</entry> + </row></tbody></tgroup></informaltable> +<para>PARAMETERS +</para> +<informaltable><tgroup cols="2"><tbody><row><entry align="char"> +<para>int fd</para> +</entry><entry + align="char"> +<para>File descriptor returned by a previous call to open().</para> +</entry> + </row><row><entry + align="char"> +<para>int num</para> +</entry><entry + align="char"> +<para>Equals <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link> for this command.</para> +</entry> + </row><row><entry + align="char"> +<para>struct dtv_property *props</para> +</entry><entry + align="char"> +<para>Points to the location where the front-end property commands are stored.</para> +</entry> + </row></tbody></tgroup></informaltable> +&return-value-dvb; +<informaltable><tgroup cols="2"><tbody><row> + <entry align="char"><para>EOPNOTSUPP</para></entry> + <entry align="char"><para>Property type not supported.</para></entry> + </row></tbody></tgroup></informaltable> +</section> + +<section> + <title>Property types</title> +<para> +On <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>/<link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>, +the actual action is determined by the dtv_property cmd/data pairs. With one single ioctl, is possible to +get/set up to 64 properties. The actual meaning of each property is described on the next sections. +</para> + +<para>The available frontend property types are shown on the next section.</para> +</section> + +<section id="fe_property_parameters"> + <title>Digital TV property parameters</title> + <section id="DTV-UNDEFINED"> + <title><constant>DTV_UNDEFINED</constant></title> + <para>Used internally. A GET/SET operation for it won't change or return anything.</para> + </section> + <section id="DTV-TUNE"> + <title><constant>DTV_TUNE</constant></title> + <para>Interpret the cache of data, build either a traditional frontend tunerequest so we can pass validation in the <constant>FE_SET_FRONTEND</constant> ioctl.</para> + </section> + <section id="DTV-CLEAR"> + <title><constant>DTV_CLEAR</constant></title> + <para>Reset a cache of data specific to the frontend here. This does not effect hardware.</para> + </section> + <section id="DTV-FREQUENCY"> + <title><constant>DTV_FREQUENCY</constant></title> + + <para>Central frequency of the channel, in HZ.</para> + + <para>Notes:</para> + <para>1)For ISDB-T, the channels are usually transmitted with an offset of 143kHz. + E.g. a valid frequncy could be 474143 kHz. The stepping is bound to the bandwidth of + the channel which is 6MHz.</para> + + <para>2)As in ISDB-Tsb the channel consists of only one or three segments the + frequency step is 429kHz, 3*429 respectively. As for ISDB-T the + central frequency of the channel is expected.</para> + </section> + <section id="DTV-MODULATION"> + <title><constant>DTV_MODULATION</constant></title> +<para>Specifies the frontend modulation type for cable and satellite types. The modulation can be one of the types bellow:</para> +<programlisting> + typedef enum fe_modulation { + QPSK, + QAM_16, + QAM_32, + QAM_64, + QAM_128, + QAM_256, + QAM_AUTO, + VSB_8, + VSB_16, + PSK_8, + APSK_16, + APSK_32, + DQPSK, + } fe_modulation_t; +</programlisting> + </section> + <section id="DTV-BANDWIDTH-HZ"> + <title><constant>DTV_BANDWIDTH_HZ</constant></title> + + <para>Bandwidth for the channel, in HZ.</para> + + <para>Possible values: + <constant>1712000</constant>, + <constant>5000000</constant>, + <constant>6000000</constant>, + <constant>7000000</constant>, + <constant>8000000</constant>, + <constant>10000000</constant>. + </para> + + <para>Notes:</para> + + <para>1) For ISDB-T it should be always 6000000Hz (6MHz)</para> + <para>2) For ISDB-Tsb it can vary depending on the number of connected segments</para> + <para>3) Bandwidth doesn't apply for DVB-C transmissions, as the bandwidth + for DVB-C depends on the symbol rate</para> + <para>4) Bandwidth in ISDB-T is fixed (6MHz) or can be easily derived from + other parameters (DTV_ISDBT_SB_SEGMENT_IDX, + DTV_ISDBT_SB_SEGMENT_COUNT).</para> + <para>5) DVB-T supports 6, 7 and 8MHz.</para> + <para>6) In addition, DVB-T2 supports 1.172, 5 and 10MHz.</para> + </section> + <section id="DTV-INVERSION"> + <title><constant>DTV_INVERSION</constant></title> + <para>The Inversion field can take one of these values: + </para> + <programlisting> + typedef enum fe_spectral_inversion { + INVERSION_OFF, + INVERSION_ON, + INVERSION_AUTO + } fe_spectral_inversion_t; + </programlisting> + <para>It indicates if spectral inversion should be presumed or not. In the automatic setting + (<constant>INVERSION_AUTO</constant>) the hardware will try to figure out the correct setting by + itself. + </para> + </section> + <section id="DTV-DISEQC-MASTER"> + <title><constant>DTV_DISEQC_MASTER</constant></title> + <para>Currently not implemented.</para> + </section> + <section id="DTV-SYMBOL-RATE"> + <title><constant>DTV_SYMBOL_RATE</constant></title> + <para>Digital TV symbol rate, in bauds (symbols/second). Used on cable standards.</para> + </section> + <section id="DTV-INNER-FEC"> + <title><constant>DTV_INNER_FEC</constant></title> + <para>Used cable/satellite transmissions. The acceptable values are: + </para> + <programlisting> +typedef enum fe_code_rate { + FEC_NONE = 0, + FEC_1_2, + FEC_2_3, + FEC_3_4, + FEC_4_5, + FEC_5_6, + FEC_6_7, + FEC_7_8, + FEC_8_9, + FEC_AUTO, + FEC_3_5, + FEC_9_10, +} fe_code_rate_t; + </programlisting> + <para>which correspond to error correction rates of 1/2, 2/3, etc., + no error correction or auto detection.</para> + </section> + <section id="DTV-VOLTAGE"> + <title><constant>DTV_VOLTAGE</constant></title> + <para>The voltage is usually used with non-DiSEqC capable LNBs to switch + the polarzation (horizontal/vertical). When using DiSEqC epuipment this + voltage has to be switched consistently to the DiSEqC commands as + described in the DiSEqC spec.</para> + <programlisting> + typedef enum fe_sec_voltage { + SEC_VOLTAGE_13, + SEC_VOLTAGE_18 + } fe_sec_voltage_t; + </programlisting> + </section> + <section id="DTV-TONE"> + <title><constant>DTV_TONE</constant></title> + <para>Currently not used.</para> + </section> + <section id="DTV-PILOT"> + <title><constant>DTV_PILOT</constant></title> + <para>Sets DVB-S2 pilot</para> + <section id="fe-pilot-t"> + <title>fe_pilot type</title> + <programlisting> +typedef enum fe_pilot { + PILOT_ON, + PILOT_OFF, + PILOT_AUTO, +} fe_pilot_t; + </programlisting> + </section> + </section> + <section id="DTV-ROLLOFF"> + <title><constant>DTV_ROLLOFF</constant></title> + <para>Sets DVB-S2 rolloff</para> + + <section id="fe-rolloff-t"> + <title>fe_rolloff type</title> + <programlisting> +typedef enum fe_rolloff { + ROLLOFF_35, /* Implied value in DVB-S, default for DVB-S2 */ + ROLLOFF_20, + ROLLOFF_25, + ROLLOFF_AUTO, +} fe_rolloff_t; + </programlisting> + </section> + </section> + <section id="DTV-DISEQC-SLAVE-REPLY"> + <title><constant>DTV_DISEQC_SLAVE_REPLY</constant></title> + <para>Currently not implemented.</para> + </section> + <section id="DTV-FE-CAPABILITY-COUNT"> + <title><constant>DTV_FE_CAPABILITY_COUNT</constant></title> + <para>Currently not implemented.</para> + </section> + <section id="DTV-FE-CAPABILITY"> + <title><constant>DTV_FE_CAPABILITY</constant></title> + <para>Currently not implemented.</para> + </section> + <section id="DTV-DELIVERY-SYSTEM"> + <title><constant>DTV_DELIVERY_SYSTEM</constant></title> + <para>Specifies the type of Delivery system</para> + <section id="fe-delivery-system-t"> + <title>fe_delivery_system type</title> + <para>Possible values: </para> +<programlisting> +typedef enum fe_delivery_system { + SYS_UNDEFINED, + SYS_DVBC_ANNEX_AC, + SYS_DVBC_ANNEX_B, + SYS_DVBT, + SYS_DSS, + SYS_DVBS, + SYS_DVBS2, + SYS_DVBH, + SYS_ISDBT, + SYS_ISDBS, + SYS_ISDBC, + SYS_ATSC, + SYS_ATSCMH, + SYS_DMBTH, + SYS_CMMB, + SYS_DAB, + SYS_DVBT2, + SYS_TURBO, +} fe_delivery_system_t; +</programlisting> + </section> + </section> + <section id="DTV-ISDBT-PARTIAL-RECEPTION"> + <title><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></title> + + <para>If <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '0' this bit-field represents whether + the channel is in partial reception mode or not.</para> + + <para>If '1' <constant>DTV_ISDBT_LAYERA_*</constant> values are assigned to the center segment and + <constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant> has to be '1'.</para> + + <para>If in addition <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1' + <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> represents whether this ISDB-Tsb channel + is consisting of one segment and layer or three segments and two layers.</para> + + <para>Possible values: 0, 1, -1 (AUTO)</para> + </section> + <section id="DTV-ISDBT-SOUND-BROADCASTING"> + <title><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></title> + + <para>This field represents whether the other DTV_ISDBT_*-parameters are + referring to an ISDB-T and an ISDB-Tsb channel. (See also + <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>).</para> + + <para>Possible values: 0, 1, -1 (AUTO)</para> + </section> + <section id="DTV-ISDBT-SB-SUBCHANNEL-ID"> + <title><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></title> + + <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para> + + <para>(Note of the author: This might not be the correct description of the + <constant>SUBCHANNEL-ID</constant> in all details, but it is my understanding of the technical + background needed to program a device)</para> + + <para>An ISDB-Tsb channel (1 or 3 segments) can be broadcasted alone or in a + set of connected ISDB-Tsb channels. In this set of channels every + channel can be received independently. The number of connected + ISDB-Tsb segment can vary, e.g. depending on the frequency spectrum + bandwidth available.</para> + + <para>Example: Assume 8 ISDB-Tsb connected segments are broadcasted. The + broadcaster has several possibilities to put those channels in the + air: Assuming a normal 13-segment ISDB-T spectrum he can align the 8 + segments from position 1-8 to 5-13 or anything in between.</para> + + <para>The underlying layer of segments are subchannels: each segment is + consisting of several subchannels with a predefined IDs. A sub-channel + is used to help the demodulator to synchronize on the channel.</para> + + <para>An ISDB-T channel is always centered over all sub-channels. As for + the example above, in ISDB-Tsb it is no longer as simple as that.</para> + + <para><constant>The DTV_ISDBT_SB_SUBCHANNEL_ID</constant> parameter is used to give the + sub-channel ID of the segment to be demodulated.</para> + + <para>Possible values: 0 .. 41, -1 (AUTO)</para> + </section> + <section id="DTV-ISDBT-SB-SEGMENT-IDX"> + <title><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></title> + <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para> + <para><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant> gives the index of the segment to be + demodulated for an ISDB-Tsb channel where several of them are + transmitted in the connected manner.</para> + <para>Possible values: 0 .. <constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> - 1</para> + <para>Note: This value cannot be determined by an automatic channel search.</para> + </section> + <section id="DTV-ISDBT-SB-SEGMENT-COUNT"> + <title><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></title> + <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para> + <para><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> gives the total count of connected ISDB-Tsb + channels.</para> + <para>Possible values: 1 .. 13</para> + <para>Note: This value cannot be determined by an automatic channel search.</para> + </section> + <section id="isdb-hierq-layers"> + <title><constant>DTV-ISDBT-LAYER*</constant> parameters</title> + <para>ISDB-T channels can be coded hierarchically. As opposed to DVB-T in + ISDB-T hierarchical layers can be decoded simultaneously. For that + reason a ISDB-T demodulator has 3 viterbi and 3 reed-solomon-decoders.</para> + <para>ISDB-T has 3 hierarchical layers which each can use a part of the + available segments. The total number of segments over all layers has + to 13 in ISDB-T.</para> + <para>There are 3 parameter sets, for Layers A, B and C.</para> + <section id="DTV-ISDBT-LAYER-ENABLED"> + <title><constant>DTV_ISDBT_LAYER_ENABLED</constant></title> + <para>Hierarchical reception in ISDB-T is achieved by enabling or disabling + layers in the decoding process. Setting all bits of + <constant>DTV_ISDBT_LAYER_ENABLED</constant> to '1' forces all layers (if applicable) to be + demodulated. This is the default.</para> + <para>If the channel is in the partial reception mode + (<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> = 1) the central segment can be decoded + independently of the other 12 segments. In that mode layer A has to + have a <constant>SEGMENT_COUNT</constant> of 1.</para> + <para>In ISDB-Tsb only layer A is used, it can be 1 or 3 in ISDB-Tsb + according to <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>. <constant>SEGMENT_COUNT</constant> must be filled + accordingly.</para> + <para>Possible values: 0x1, 0x2, 0x4 (|-able)</para> + <para><constant>DTV_ISDBT_LAYER_ENABLED[0:0]</constant> - layer A</para> + <para><constant>DTV_ISDBT_LAYER_ENABLED[1:1]</constant> - layer B</para> + <para><constant>DTV_ISDBT_LAYER_ENABLED[2:2]</constant> - layer C</para> + <para><constant>DTV_ISDBT_LAYER_ENABLED[31:3]</constant> unused</para> + </section> + <section id="DTV-ISDBT-LAYER-FEC"> + <title><constant>DTV_ISDBT_LAYER*_FEC</constant></title> + <para>Possible values: <constant>FEC_AUTO</constant>, <constant>FEC_1_2</constant>, <constant>FEC_2_3</constant>, <constant>FEC_3_4</constant>, <constant>FEC_5_6</constant>, <constant>FEC_7_8</constant></para> + </section> + <section id="DTV-ISDBT-LAYER-MODULATION"> + <title><constant>DTV_ISDBT_LAYER*_MODULATION</constant></title> + <para>Possible values: <constant>QAM_AUTO</constant>, QP<constant>SK, QAM_16</constant>, <constant>QAM_64</constant>, <constant>DQPSK</constant></para> + <para>Note: If layer C is <constant>DQPSK</constant> layer B has to be <constant>DQPSK</constant>. If layer B is <constant>DQPSK</constant> + and <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>=0 layer has to be <constant>DQPSK</constant>.</para> + </section> + <section id="DTV-ISDBT-LAYER-SEGMENT-COUNT"> + <title><constant>DTV_ISDBT_LAYER*_SEGMENT_COUNT</constant></title> + <para>Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)</para> + <para>Note: Truth table for <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> and + <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> and <constant>LAYER</constant>*_SEGMENT_COUNT</para> + <informaltable id="isdbt-layer_seg-cnt-table"> + <tgroup cols="6"> + <tbody> + <row> + <entry>PR</entry> + <entry>SB</entry> + <entry>Layer A width</entry> + <entry>Layer B width</entry> + <entry>Layer C width</entry> + <entry>total width</entry> + </row> + <row> + <entry>0</entry> + <entry>0</entry> + <entry>1 .. 13</entry> + <entry>1 .. 13</entry> + <entry>1 .. 13</entry> + <entry>13</entry> + </row> + <row> + <entry>1</entry> + <entry>0</entry> + <entry>1</entry> + <entry>1 .. 13</entry> + <entry>1 .. 13</entry> + <entry>13</entry> + </row> + <row> + <entry>0</entry> + <entry>1</entry> + <entry>1</entry> + <entry>0</entry> + <entry>0</entry> + <entry>1</entry> + </row> + <row> + <entry>1</entry> + <entry>1</entry> + <entry>1</entry> + <entry>2</entry> + <entry>0</entry> + <entry>13</entry> + </row> + </tbody> + </tgroup> + </informaltable> + </section> + <section id="DTV-ISDBT-LAYER-TIME-INTERLEAVING"> + <title><constant>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</constant></title> + <para>Possible values: 0, 1, 2, 3, -1 (AUTO)</para> + <para>Note: The real inter-leaver depth-names depend on the mode (fft-size); the values + here are referring to what can be found in the TMCC-structure - + independent of the mode.</para> + </section> + </section> + <section id="DTV-API-VERSION"> + <title><constant>DTV_API_VERSION</constant></title> + <para>Returns the major/minor version of the DVB API</para> + </section> + <section id="DTV-CODE-RATE-HP"> + <title><constant>DTV_CODE_RATE_HP</constant></title> + <para>Used on terrestrial transmissions. The acceptable values are: + </para> + <programlisting> +typedef enum fe_code_rate { + FEC_NONE = 0, + FEC_1_2, + FEC_2_3, + FEC_3_4, + FEC_4_5, + FEC_5_6, + FEC_6_7, + FEC_7_8, + FEC_8_9, + FEC_AUTO, + FEC_3_5, + FEC_9_10, +} fe_code_rate_t; + </programlisting> + </section> + <section id="DTV-CODE-RATE-LP"> + <title><constant>DTV_CODE_RATE_LP</constant></title> + <para>Used on terrestrial transmissions. The acceptable values are: + </para> + <programlisting> +typedef enum fe_code_rate { + FEC_NONE = 0, + FEC_1_2, + FEC_2_3, + FEC_3_4, + FEC_4_5, + FEC_5_6, + FEC_6_7, + FEC_7_8, + FEC_8_9, + FEC_AUTO, + FEC_3_5, + FEC_9_10, +} fe_code_rate_t; + </programlisting> + </section> + <section id="DTV-GUARD-INTERVAL"> + <title><constant>DTV_GUARD_INTERVAL</constant></title> + + <para>Possible values are:</para> +<programlisting> +typedef enum fe_guard_interval { + GUARD_INTERVAL_1_32, + GUARD_INTERVAL_1_16, + GUARD_INTERVAL_1_8, + GUARD_INTERVAL_1_4, + GUARD_INTERVAL_AUTO, + GUARD_INTERVAL_1_128, + GUARD_INTERVAL_19_128, + GUARD_INTERVAL_19_256, +} fe_guard_interval_t; +</programlisting> + + <para>Notes:</para> + <para>1) If <constant>DTV_GUARD_INTERVAL</constant> is set the <constant>GUARD_INTERVAL_AUTO</constant> the hardware will + try to find the correct guard interval (if capable) and will use TMCC to fill + in the missing parameters.</para> + <para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para> + </section> + <section id="DTV-TRANSMISSION-MODE"> + <title><constant>DTV_TRANSMISSION_MODE</constant></title> + + <para>Specifies the number of carriers used by the standard</para> + + <para>Possible values are:</para> +<programlisting> +typedef enum fe_transmit_mode { + TRANSMISSION_MODE_2K, + TRANSMISSION_MODE_8K, + TRANSMISSION_MODE_AUTO, + TRANSMISSION_MODE_4K, + TRANSMISSION_MODE_1K, + TRANSMISSION_MODE_16K, + TRANSMISSION_MODE_32K, +} fe_transmit_mode_t; +</programlisting> + <para>Notes:</para> + <para>1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called + 'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K</para> + + <para>2) If <constant>DTV_TRANSMISSION_MODE</constant> is set the <constant>TRANSMISSION_MODE_AUTO</constant> the + hardware will try to find the correct FFT-size (if capable) and will + use TMCC to fill in the missing parameters.</para> + <para>3) DVB-T specifies 2K and 8K as valid sizes.</para> + <para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para> + </section> + <section id="DTV-HIERARCHY"> + <title><constant>DTV_HIERARCHY</constant></title> + <para>Frontend hierarchy</para> + <programlisting> +typedef enum fe_hierarchy { + HIERARCHY_NONE, + HIERARCHY_1, + HIERARCHY_2, + HIERARCHY_4, + HIERARCHY_AUTO + } fe_hierarchy_t; + </programlisting> + </section> + <section id="DTV-ISDBS-TS-ID"> + <title><constant>DTV_ISDBS_TS_ID</constant></title> + <para>Currently unused.</para> + </section> + <section id="DTV-DVBT2-PLP-ID"> + <title><constant>DTV_DVBT2_PLP_ID</constant></title> + <para>DVB-T2 supports Physical Layer Pipes (PLP) to allow transmission of + many data types via a single multiplex. The API will soon support this + at which point this section will be expanded.</para> + </section> +</section> + <section id="frontend-property-terrestrial-systems"> + <title>Properties used on terrestrial delivery systems</title> + <section id="dvbt-params"> + <title>DVB-T delivery system</title> + <para>The following parameters are valid for DVB-T:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> + <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem> + <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem> + </itemizedlist> + </section> + <section id="dvbt2-params"> + <title>DVB-T2 delivery system</title> + <para>DVB-T2 support is currently in the early stages + of development, so expect that this section maygrow and become + more detailed with time.</para> + <para>The following parameters are valid for DVB-T2:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> + <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem> + <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DVBT2-PLP-ID"><constant>DTV_DVBT2_PLP_ID</constant></link></para></listitem> + </itemizedlist> + </section> + <section id="isdbt"> + <title>ISDB-T delivery system</title> + <para>This ISDB-T/ISDB-Tsb API extension should reflect all information + needed to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible + that some very sophisticated devices won't need certain parameters to + tune.</para> + <para>The information given here should help application writers to know how + to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API.</para> + <para>The details given here about ISDB-T and ISDB-Tsb are just enough to + basically show the dependencies between the needed parameter values, + but surely some information is left out. For more detailed information + see the following documents:</para> + <para>ARIB STD-B31 - "Transmission System for Digital Terrestrial + Television Broadcasting" and</para> + <para>ARIB TR-B14 - "Operational Guidelines for Digital Terrestrial + Television Broadcasting".</para> + <para>In order to understand the ISDB specific parameters, + one has to have some knowledge the channel structure in + ISDB-T and ISDB-Tsb. I.e. it has to be known to + the reader that an ISDB-T channel consists of 13 segments, + that it can have up to 3 layer sharing those segments, + and things like that.</para> + <para>The following parameters are valid for ISDB-T:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> + <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem> + <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-ENABLED"><constant>DTV_ISDBT_LAYER_ENABLED</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-PARTIAL-RECEPTION"><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-SOUND-BROADCASTING"><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-SB-SUBCHANNEL-ID"><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-IDX"><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-COUNT"><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERA_FEC</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERA_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERA_TIME_INTERLEAVING</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERB_FEC</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERB_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERB_SEGMENT_COUNT</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERB_TIME_INTERLEAVING</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERC_FEC</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERC_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERC_SEGMENT_COUNT</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERC_TIME_INTERLEAVING</constant></link></para></listitem> + </itemizedlist> + </section> + <section id="atsc-params"> + <title>ATSC delivery system</title> + <para>The following parameters are valid for ATSC:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> + <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> + </itemizedlist> + </section> + </section> + <section id="frontend-property-cable-systems"> + <title>Properties used on cable delivery systems</title> + <section id="dvbc-params"> + <title>DVB-C delivery system</title> + <para>The DVB-C Annex-A/C is the widely used cable standard. Transmission uses QAM modulation.</para> + <para>The following parameters are valid for DVB-C Annex A/C:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> + <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem> + </itemizedlist> + </section> + <section id="dvbc-annex-b-params"> + <title>DVB-C Annex B delivery system</title> + <para>The DVB-C Annex-B is only used on a few Countries like the United States.</para> + <para>The following parameters are valid for DVB-C Annex B:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> + <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> + </itemizedlist> + </section> + </section> + <section id="frontend-property-satellital-systems"> + <title>Properties used on satellital delivery systems</title> + <section id="dvbs-params"> + <title>DVB-S delivery system</title> + <para>The following parameters are valid for DVB-S:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> + <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem> + <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TONE"><constant>DTV_TONE</constant></link></para></listitem> + </itemizedlist> + <para>Future implementations might add those two missing parameters:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-DISEQC-MASTER"><constant>DTV_DISEQC_MASTER</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DISEQC-SLAVE-REPLY"><constant>DTV_DISEQC_SLAVE_REPLY</constant></link></para></listitem> + </itemizedlist> + </section> + <section id="dvbs2-params"> + <title>DVB-S2 delivery system</title> + <para>In addition to all parameters valid for DVB-S, DVB-S2 supports the following parameters:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-PILOT"><constant>DTV_PILOT</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ROLLOFF"><constant>DTV_ROLLOFF</constant></link></para></listitem> + </itemizedlist> + </section> + <section id="turbo-params"> + <title>Turbo code delivery system</title> + <para>In addition to all parameters valid for DVB-S, turbo code supports the following parameters:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> + </itemizedlist> + </section> + <section id="isdbs-params"> + <title>ISDB-S delivery system</title> + <para>The following parameters are valid for ISDB-S:</para> + <itemizedlist mark='opencircle'> + <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> + <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> + <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> + <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem> + <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem> + <listitem><para><link linkend="DTV-ISDBS-TS-ID"><constant>DTV_ISDBS_TS_ID</constant></link></para></listitem> + </itemizedlist> + </section> + </section> +</section> diff --git a/Documentation/DocBook/dvb/dvbstb.pdf b/Documentation/DocBook/media/dvb/dvbstb.pdf Binary files differindex 0fa75d9..0fa75d9 100644 --- a/Documentation/DocBook/dvb/dvbstb.pdf +++ b/Documentation/DocBook/media/dvb/dvbstb.pdf diff --git a/Documentation/DocBook/dvb/examples.xml b/Documentation/DocBook/media/dvb/examples.xml index f037e56..f037e56 100644 --- a/Documentation/DocBook/dvb/examples.xml +++ b/Documentation/DocBook/media/dvb/examples.xml diff --git a/Documentation/DocBook/dvb/frontend.xml b/Documentation/DocBook/media/dvb/frontend.xml index 60c6976..61407ea 100644 --- a/Documentation/DocBook/dvb/frontend.xml +++ b/Documentation/DocBook/media/dvb/frontend.xml @@ -20,22 +20,52 @@ cards, in which case there exists no frontend device.</para> <section id="frontend_types"> <title>Frontend Data Types</title> -<section id="frontend_type"> -<title>frontend type</title> - -<para>For historical reasons frontend types are named after the type of modulation used in -transmission.</para> -<programlisting> - typedef enum fe_type { - FE_QPSK, /⋆ DVB-S ⋆/ - FE_QAM, /⋆ DVB-C ⋆/ - FE_OFDM /⋆ DVB-T ⋆/ - } fe_type_t; -</programlisting> - +<section id="fe-type-t"> +<title>Frontend type</title> + +<para>For historical reasons, frontend types are named by the type of modulation used in +transmission. The fontend types are given by fe_type_t type, defined as:</para> + +<table pgwide="1" frame="none" id="fe-type"> +<title>Frontend types</title> +<tgroup cols="3"> + &cs-def; + <thead> + <row> + <entry>fe_type</entry> + <entry>Description</entry> + <entry><link linkend="DTV-DELIVERY-SYSTEM">DTV_DELIVERY_SYSTEM</link> equivalent type</entry> + </row> + </thead> + <tbody valign="top"> + <row> + <entry id="FE_QPSK"><constant>FE_QPSK</constant></entry> + <entry>For DVB-S standard</entry> + <entry><constant>SYS_DVBS</constant></entry> + </row> + <row> + <entry id="FE_QAM"><constant>FE_QAM</constant></entry> + <entry>For DVB-C annex A/C standard</entry> + <entry><constant>SYS_DVBC_ANNEX_AC</constant></entry> + </row> + <row> + <entry id="FE_OFDM"><constant>FE_OFDM</constant></entry> + <entry>For DVB-T standard</entry> + <entry><constant>SYS_DVBT</constant></entry> + </row> + <row> + <entry id="FE_ATSC"><constant>FE_ATSC</constant></entry> + <entry>For ATSC standard (terrestrial) or for DVB-C Annex B (cable) used in US.</entry> + <entry><constant>SYS_ATSC</constant> (terrestrial) or <constant>SYS_DVBC_ANNEX_B</constant> (cable)</entry> + </row> +</tbody></tgroup></table> + +<para>Newer formats like DVB-S2, ISDB-T, ISDB-S and DVB-T2 are not described at the above, as they're +supported via the new <link linkend="FE_GET_SET_PROPERTY">FE_GET_PROPERTY/FE_GET_SET_PROPERTY</link> ioctl's, using the <link linkend="DTV-DELIVERY-SYSTEM">DTV_DELIVERY_SYSTEM</link> parameter. +</para> </section> -<section id="frontend_caps"> +<section id="fe-caps-t"> <title>frontend capabilities</title> <para>Capabilities describe what a frontend can do. Some capabilities can only be supported for @@ -76,7 +106,7 @@ a specific frontend type.</para> </programlisting> </section> -<section id="frontend_info"> +<section id="dvb-frontend-info"> <title>frontend information</title> <para>Information about the frontend ca be queried with @@ -99,7 +129,7 @@ a specific frontend type.</para> </programlisting> </section> -<section id="frontend_diseqc"> +<section id="dvb-diseqc-master-cmd"> <title>diseqc master command</title> <para>A message sent from the frontend to DiSEqC capable equipment.</para> @@ -110,7 +140,7 @@ a specific frontend type.</para> }; </programlisting> </section> -<section role="subsection"> +<section role="subsection" id="dvb-diseqc-slave-reply"> <title>diseqc slave reply</title> <para>A reply to the frontend from DiSEqC 2.0 capable equipment.</para> @@ -123,7 +153,7 @@ a specific frontend type.</para> </programlisting> </section> -<section id="frontend_diseqc_slave_reply"> +<section id="fe-sec-voltage-t"> <title>diseqc slave reply</title> <para>The voltage is usually used with non-DiSEqC capable LNBs to switch the polarzation (horizontal/vertical). When using DiSEqC epuipment this voltage has to be switched @@ -136,7 +166,7 @@ consistently to the DiSEqC commands as described in the DiSEqC spec.</para> </programlisting> </section> -<section id="frontend_sec_tone"> +<section id="fe-sec-tone-mode-t"> <title>SEC continuous tone</title> <para>The continuous 22KHz tone is usually used with non-DiSEqC capable LNBs to switch the @@ -151,7 +181,7 @@ spec.</para> </programlisting> </section> -<section id="frontend_sec_burst"> +<section id="fe-sec-mini-cmd-t"> <title>SEC tone burst</title> <para>The 22KHz tone burst is usually used with non-DiSEqC capable switches to select @@ -168,7 +198,7 @@ spec.</para> <para></para> </section> -<section id="frontend_status"> +<section id="fe-status-t"> <title>frontend status</title> <para>Several functions of the frontend device use the fe_status data type defined by</para> @@ -188,31 +218,54 @@ by</para> </section> -<section id="frontend_params"> +<section id="dvb-frontend-parameters"> <title>frontend parameters</title> <para>The kind of parameters passed to the frontend device for tuning depend on -the kind of hardware you are using. All kinds of parameters are combined as an -union in the FrontendParameters structure:</para> +the kind of hardware you are using.</para> +<para>The struct <constant>dvb_frontend_parameters</constant> uses an +union with specific per-system parameters. However, as newer delivery systems +required more data, the structure size weren't enough to fit, and just +extending its size would break the existing applications. So, those parameters +were replaced by the usage of <link linkend="FE_GET_SET_PROPERTY"> +<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> ioctl's. The +new API is flexible enough to add new parameters to existing delivery systems, +and to add newer delivery systems.</para> +<para>So, newer applications should use <link linkend="FE_GET_SET_PROPERTY"> +<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> instead, in +order to be able to support the newer System Delivery like DVB-S2, DVB-T2, +DVB-C2, ISDB, etc.</para> +<para>All kinds of parameters are combined as an union in the FrontendParameters structure:</para> <programlisting> - struct dvb_frontend_parameters { - uint32_t frequency; /⋆ (absolute) frequency in Hz for QAM/OFDM ⋆/ - /⋆ intermediate frequency in kHz for QPSK ⋆/ - fe_spectral_inversion_t inversion; - union { - struct dvb_qpsk_parameters qpsk; - struct dvb_qam_parameters qam; - struct dvb_ofdm_parameters ofdm; - } u; - }; +struct dvb_frontend_parameters { + uint32_t frequency; /⋆ (absolute) frequency in Hz for QAM/OFDM ⋆/ + /⋆ intermediate frequency in kHz for QPSK ⋆/ + fe_spectral_inversion_t inversion; + union { + struct dvb_qpsk_parameters qpsk; + struct dvb_qam_parameters qam; + struct dvb_ofdm_parameters ofdm; + struct dvb_vsb_parameters vsb; + } u; +}; </programlisting> -<para>For satellite QPSK frontends you have to use the <constant>QPSKParameters</constant> member defined by</para> +<para>In the case of QPSK frontends the <constant>frequency</constant> field specifies the intermediate +frequency, i.e. the offset which is effectively added to the local oscillator frequency (LOF) of +the LNB. The intermediate frequency has to be specified in units of kHz. For QAM and +OFDM frontends the <constant>frequency</constant> specifies the absolute frequency and is given in Hz. +</para> +<section id="dvb-qpsk-parameters"> +<title>QPSK parameters</title> +<para>For satellite QPSK frontends you have to use the <constant>dvb_qpsk_parameters</constant> structure:</para> <programlisting> struct dvb_qpsk_parameters { uint32_t symbol_rate; /⋆ symbol rate in Symbols per second ⋆/ fe_code_rate_t fec_inner; /⋆ forward error correction (see above) ⋆/ }; </programlisting> -<para>for cable QAM frontend you use the <constant>QAMParameters</constant> structure</para> +</section> +<section id="dvb-qam-parameters"> +<title>QAM parameters</title> +<para>for cable QAM frontend you use the <constant>dvb_qam_parameters</constant> structure:</para> <programlisting> struct dvb_qam_parameters { uint32_t symbol_rate; /⋆ symbol rate in Symbols per second ⋆/ @@ -220,8 +273,19 @@ union in the FrontendParameters structure:</para> fe_modulation_t modulation; /⋆ modulation type (see above) ⋆/ }; </programlisting> -<para>DVB-T frontends are supported by the <constant>OFDMParamters</constant> structure -</para> +</section> +<section id="dvb-vsb-parameters"> +<title>VSB parameters</title> +<para>ATSC frontends are supported by the <constant>dvb_vsb_parameters</constant> structure:</para> +<programlisting> +struct dvb_vsb_parameters { + fe_modulation_t modulation; /⋆ modulation type (see above) ⋆/ +}; +</programlisting> +</section> +<section id="dvb-ofdm-parameters"> +<title>OFDM parameters</title> +<para>DVB-T frontends are supported by the <constant>dvb_ofdm_parameters</constant> structure:</para> <programlisting> struct dvb_ofdm_parameters { fe_bandwidth_t bandwidth; @@ -233,86 +297,124 @@ union in the FrontendParameters structure:</para> fe_hierarchy_t hierarchy_information; }; </programlisting> -<para>In the case of QPSK frontends the <constant>Frequency</constant> field specifies the intermediate -frequency, i.e. the offset which is effectively added to the local oscillator frequency (LOF) of -the LNB. The intermediate frequency has to be specified in units of kHz. For QAM and -OFDM frontends the Frequency specifies the absolute frequency and is given in -Hz. -</para> +</section> +<section id="fe-spectral-inversion-t"> +<title>frontend spectral inversion</title> <para>The Inversion field can take one of these values: </para> <programlisting> - typedef enum fe_spectral_inversion { - INVERSION_OFF, - INVERSION_ON, - INVERSION_AUTO - } fe_spectral_inversion_t; +typedef enum fe_spectral_inversion { + INVERSION_OFF, + INVERSION_ON, + INVERSION_AUTO +} fe_spectral_inversion_t; </programlisting> <para>It indicates if spectral inversion should be presumed or not. In the automatic setting (<constant>INVERSION_AUTO</constant>) the hardware will try to figure out the correct setting by itself. </para> -<para>The possible values for the <constant>FEC_inner</constant> field are +</section> +<section id="fe-code-rate-t"> +<title>frontend code rate</title> +<para>The possible values for the <constant>fec_inner</constant> field used on +<link refend="dvb-qpsk-parameters"><constant>struct dvb_qpsk_parameters</constant></link> and +<link refend="dvb-qam-parameters"><constant>struct dvb_qam_parameters</constant></link> are: </para> <programlisting> - typedef enum fe_code_rate { - FEC_NONE = 0, - FEC_1_2, - FEC_2_3, - FEC_3_4, - FEC_4_5, - FEC_5_6, - FEC_6_7, - FEC_7_8, - FEC_8_9, - FEC_AUTO - } fe_code_rate_t; +typedef enum fe_code_rate { + FEC_NONE = 0, + FEC_1_2, + FEC_2_3, + FEC_3_4, + FEC_4_5, + FEC_5_6, + FEC_6_7, + FEC_7_8, + FEC_8_9, + FEC_AUTO, + FEC_3_5, + FEC_9_10, +} fe_code_rate_t; </programlisting> <para>which correspond to error correction rates of 1/2, 2/3, etc., no error correction or auto detection. </para> -<para>For cable and terrestrial frontends (QAM and OFDM) one also has to specify the quadrature -modulation mode which can be one of the following: +</section> +<section id="fe-modulation-t"> +<title>frontend modulation type for QAM, OFDM and VSB</title> +<para>For cable and terrestrial frontends, e. g. for +<link refend="dvb-qam-parameters"><constant>struct dvb_qpsk_parameters</constant></link>, +<link refend="dvb-ofdm-parameters"><constant>struct dvb_qam_parameters</constant></link> and +<link refend="dvb-vsb-parameters"><constant>struct dvb_qam_parameters</constant></link>, +it needs to specify the quadrature modulation mode which can be one of the following: </para> <programlisting> typedef enum fe_modulation { - QPSK, - QAM_16, - QAM_32, - QAM_64, - QAM_128, - QAM_256, - QAM_AUTO + QPSK, + QAM_16, + QAM_32, + QAM_64, + QAM_128, + QAM_256, + QAM_AUTO, + VSB_8, + VSB_16, + PSK_8, + APSK_16, + APSK_32, + DQPSK, } fe_modulation_t; </programlisting> +</section> <para>Finally, there are several more parameters for OFDM: </para> +<section id="fe-transmit-mode-t"> +<title>Number of carriers per channel</title> <programlisting> - typedef enum fe_transmit_mode { - TRANSMISSION_MODE_2K, - TRANSMISSION_MODE_8K, - TRANSMISSION_MODE_AUTO +typedef enum fe_transmit_mode { + TRANSMISSION_MODE_2K, + TRANSMISSION_MODE_8K, + TRANSMISSION_MODE_AUTO, + TRANSMISSION_MODE_4K, + TRANSMISSION_MODE_1K, + TRANSMISSION_MODE_16K, + TRANSMISSION_MODE_32K, } fe_transmit_mode_t; </programlisting> - <programlisting> - typedef enum fe_bandwidth { - BANDWIDTH_8_MHZ, - BANDWIDTH_7_MHZ, - BANDWIDTH_6_MHZ, - BANDWIDTH_AUTO - } fe_bandwidth_t; +</section> +<section id="fe-bandwidth-t"> +<title>frontend bandwidth</title> +<programlisting> +typedef enum fe_bandwidth { + BANDWIDTH_8_MHZ, + BANDWIDTH_7_MHZ, + BANDWIDTH_6_MHZ, + BANDWIDTH_AUTO, + BANDWIDTH_5_MHZ, + BANDWIDTH_10_MHZ, + BANDWIDTH_1_712_MHZ, +} fe_bandwidth_t; </programlisting> - <programlisting> - typedef enum fe_guard_interval { - GUARD_INTERVAL_1_32, - GUARD_INTERVAL_1_16, - GUARD_INTERVAL_1_8, - GUARD_INTERVAL_1_4, - GUARD_INTERVAL_AUTO - } fe_guard_interval_t; +</section> +<section id="fe-guard-interval-t"> +<title>frontend guard inverval</title> +<programlisting> +typedef enum fe_guard_interval { + GUARD_INTERVAL_1_32, + GUARD_INTERVAL_1_16, + GUARD_INTERVAL_1_8, + GUARD_INTERVAL_1_4, + GUARD_INTERVAL_AUTO, + GUARD_INTERVAL_1_128, + GUARD_INTERVAL_19_128, + GUARD_INTERVAL_19_256, +} fe_guard_interval_t; </programlisting> - <programlisting> - typedef enum fe_hierarchy { +</section> +<section id="fe-hierarchy-t"> +<title>frontend hierarchy</title> +<programlisting> +typedef enum fe_hierarchy { HIERARCHY_NONE, HIERARCHY_1, HIERARCHY_2, @@ -320,10 +422,11 @@ modulation mode which can be one of the following: HIERARCHY_AUTO } fe_hierarchy_t; </programlisting> +</section> </section> -<section id="frontend_events"> +<section id="dvb-frontend-event"> <title>frontend events</title> <programlisting> struct dvb_frontend_event { @@ -412,8 +515,7 @@ modulation mode which can be one of the following: <para>(blocking mode is the default)</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>ENODEV</para> @@ -473,8 +575,7 @@ modulation mode which can be one of the following: <para>File descriptor returned by a previous call to open().</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EBADF</para> @@ -530,8 +631,7 @@ modulation mode which can be one of the following: to be stored.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EBADF</para> @@ -592,38 +692,8 @@ modulation mode which can be one of the following: <para>The bit error rate is stored into *ber.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>ber points to invalid address.</para> -</entry> - </row><row><entry - align="char"> -<para>ENOSIGNAL</para> -</entry><entry - align="char"> -<para>There is no signal, thus no meaningful bit error rate. Also - returned if the front-end is not turned on.</para> -</entry> - </row><row><entry - align="char"> -<para>ENOSYS</para> -</entry><entry - align="char"> -<para>Function not available for this device.</para> -</entry> - </row></tbody></tgroup></informaltable> + +&return-value-dvb; </section> <section id="FE_READ_SNR"> @@ -670,38 +740,7 @@ modulation mode which can be one of the following: </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>snr points to invalid address.</para> -</entry> - </row><row><entry - align="char"> -<para>ENOSIGNAL</para> -</entry><entry - align="char"> -<para>There is no signal, thus no meaningful signal strength - value. Also returned if front-end is not turned on.</para> -</entry> - </row><row><entry - align="char"> -<para>ENOSYS</para> -</entry><entry - align="char"> -<para>Function not available for this device.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_READ_SIGNAL_STRENGTH"> @@ -748,38 +787,8 @@ modulation mode which can be one of the following: <para>The signal strength value is stored into *strength.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>status points to invalid address.</para> -</entry> - </row><row><entry - align="char"> -<para>ENOSIGNAL</para> -</entry><entry - align="char"> -<para>There is no signal, thus no meaningful signal strength - value. Also returned if front-end is not turned on.</para> -</entry> - </row><row><entry - align="char"> -<para>ENOSYS</para> -</entry><entry - align="char"> -<para>Function not available for this device.</para> -</entry> - </row></tbody></tgroup></informaltable> + +&return-value-dvb; </section> <section id="FE_READ_UNCORRECTED_BLOCKS"> @@ -833,30 +842,8 @@ modulation mode which can be one of the following: so far.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>ublocks points to invalid address.</para> -</entry> - </row><row><entry - align="char"> -<para>ENOSYS</para> -</entry><entry - align="char"> -<para>Function not available for this device.</para> -</entry> - </row></tbody></tgroup></informaltable> + +&return-value-dvb; </section> <section id="FE_SET_FRONTEND"> @@ -909,24 +896,10 @@ modulation mode which can be one of the following: <para>Points to parameters for tuning operation.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> + +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>p points to invalid address.</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -982,25 +955,9 @@ modulation mode which can be one of the following: </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> - +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>p points to invalid address.</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -1084,24 +1041,9 @@ modulation mode which can be one of the following: </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>ev points to invalid address.</para> -</entry> - </row><row><entry - align="char"> <para>EWOULDBLOCK</para> </entry><entry align="char"> @@ -1113,11 +1055,6 @@ modulation mode which can be one of the following: <para>EOVERFLOW</para> </entry><entry align="char"> -</entry> - </row><row><entry - align="char"> -</entry><entry - align="char"> <para>Overflow in event queue - one or more events were lost.</para> </entry> </row></tbody></tgroup></informaltable> @@ -1170,23 +1107,7 @@ modulation mode which can be one of the following: to be stored.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>info points to invalid address.</para> -</entry> -</row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_DISEQC_RESET_OVERLOAD"> @@ -1229,30 +1150,7 @@ modulation mode which can be one of the following: </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EPERM</para> -</entry><entry - align="char"> -<para>Permission denied (needs read/write access).</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error in the device driver.</para> -</entry> -</row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_DISEQC_SEND_MASTER_CMD"> @@ -1302,45 +1200,7 @@ modulation mode which can be one of the following: </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>Seq points to an invalid address.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>The data structure referred to by seq is invalid in some - way.</para> -</entry> - </row><row><entry - align="char"> -<para>EPERM</para> -</entry><entry - align="char"> -<para>Permission denied (needs read/write access).</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error in the device driver.</para> -</entry> -</row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_DISEQC_RECV_SLAVE_REPLY"> @@ -1390,45 +1250,7 @@ modulation mode which can be one of the following: <para>Pointer to the command to be received.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>Seq points to an invalid address.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>The data structure referred to by seq is invalid in some - way.</para> -</entry> - </row><row><entry - align="char"> -<para>EPERM</para> -</entry><entry - align="char"> -<para>Permission denied (needs read/write access).</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error in the device driver.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_DISEQC_SEND_BURST"> @@ -1476,45 +1298,7 @@ modulation mode which can be one of the following: </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>Seq points to an invalid address.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>The data structure referred to by seq is invalid in some - way.</para> -</entry> - </row><row><entry - align="char"> -<para>EPERM</para> -</entry><entry - align="char"> -<para>Permission denied (needs read/write access).</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error in the device driver.</para> -</entry> -</row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_SET_TONE"> @@ -1560,44 +1344,7 @@ modulation mode which can be one of the following: <para>The requested tone generation mode (on/off).</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>ENODEV</para> -</entry><entry - align="char"> -<para>Device driver not loaded/available.</para> -</entry> - </row><row><entry - align="char"> -<para>EBUSY</para> -</entry><entry - align="char"> -<para>Device or resource busy.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Invalid argument.</para> -</entry> - </row><row><entry - align="char"> -<para>EPERM</para> -</entry><entry - align="char"> -<para>File not opened with read permissions.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error in the device driver.</para> -</entry> -</row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_SET_VOLTAGE"> @@ -1645,44 +1392,7 @@ modulation mode which can be one of the following: </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>ENODEV</para> -</entry><entry - align="char"> -<para>Device driver not loaded/available.</para> -</entry> - </row><row><entry - align="char"> -<para>EBUSY</para> -</entry><entry - align="char"> -<para>Device or resource busy.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Invalid argument.</para> -</entry> - </row><row><entry - align="char"> -<para>EPERM</para> -</entry><entry - align="char"> -<para>File not opened with read permissions.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error in the device driver.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_ENABLE_HIGH_LNB_VOLTAGE"> @@ -1731,44 +1441,7 @@ modulation mode which can be one of the following: </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>ENODEV</para> -</entry><entry - align="char"> -<para>Device driver not loaded/available.</para> -</entry> - </row><row><entry - align="char"> -<para>EBUSY</para> -</entry><entry - align="char"> -<para>Device or resource busy.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Invalid argument.</para> -</entry> - </row><row><entry - align="char"> -<para>EPERM</para> -</entry><entry - align="char"> -<para>File not opened with read permissions.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error in the device driver.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_SET_FRONTEND_TUNE_MODE"> @@ -1800,11 +1473,7 @@ FE_TUNE_MODE_ONESHOT When set, this flag will disable any zigzagging or other "n </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS</para> -<informaltable><tgroup cols="2"><tbody><row> -<entry align="char"><para>EINVAL</para></entry> -<entry align="char"><para>Invalid argument.</para></entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; </section> <section id="FE_DISHNETWORK_SEND_LEGACY_CMD"> @@ -1838,12 +1507,7 @@ sends the specified raw cmd to the dish via DISEqC. </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS</para> -<informaltable><tgroup cols="1"><tbody><row> -<entry align="char"> - <para>There are no errors in use for this call</para> -</entry> -</row></tbody></tgroup></informaltable> +&return-value-dvb; </section> </section> diff --git a/Documentation/DocBook/dvb/intro.xml b/Documentation/DocBook/media/dvb/intro.xml index 0dc83f6..170064a 100644 --- a/Documentation/DocBook/dvb/intro.xml +++ b/Documentation/DocBook/media/dvb/intro.xml @@ -154,6 +154,10 @@ are called:</para> </listitem> <listitem> +<para><emphasis role="tt">/dev/dvb/adapterN/dvrM</emphasis>,</para> +</listitem> + <listitem> + <para><emphasis role="tt">/dev/dvb/adapterN/caM</emphasis>,</para></listitem></itemizedlist> <para>where N enumerates the DVB PCI cards in a system starting @@ -175,16 +179,33 @@ the devices are described in the following chapters.</para> The DVB API include files should be included in application sources with a partial path like:</para> - +<programlisting> + #include <linux/dvb/audio.h> +</programlisting> +<programlisting> + #include <linux/dvb/ca.h> +</programlisting> +<programlisting> + #include <linux/dvb/dmx.h> +</programlisting> <programlisting> #include <linux/dvb/frontend.h> </programlisting> +<programlisting> + #include <linux/dvb/net.h> +</programlisting> +<programlisting> + #include <linux/dvb/osd.h> +</programlisting> +<programlisting> + #include <linux/dvb/video.h> +</programlisting> <para>To enable applications to support different API version, an additional include file <emphasis role="tt">linux/dvb/version.h</emphasis> exists, which defines the constant <emphasis role="tt">DVB_API_VERSION</emphasis>. This document -describes <emphasis role="tt">DVB_API_VERSION 3</emphasis>. +describes <emphasis role="tt">DVB_API_VERSION 5.4</emphasis>. </para> </section> diff --git a/Documentation/DocBook/dvb/kdapi.xml b/Documentation/DocBook/media/dvb/kdapi.xml index 6c67481..6c67481 100644 --- a/Documentation/DocBook/dvb/kdapi.xml +++ b/Documentation/DocBook/media/dvb/kdapi.xml diff --git a/Documentation/DocBook/dvb/net.xml b/Documentation/DocBook/media/dvb/net.xml index 94e388d..67d37e5 100644 --- a/Documentation/DocBook/dvb/net.xml +++ b/Documentation/DocBook/media/dvb/net.xml @@ -7,6 +7,23 @@ application. </para> <section id="dvb_net_types"> <title>DVB Net Data Types</title> + +<section id="dvb-net-if"> +<title>struct dvb_net_if</title> +<programlisting> +struct dvb_net_if { + __u16 pid; + __u16 if_num; + __u8 feedtype; +#define DVB_NET_FEEDTYPE_MPE 0 /⋆ multi protocol encapsulation ⋆/ +#define DVB_NET_FEEDTYPE_ULE 1 /⋆ ultra lightweight encapsulation ⋆/ +}; +</programlisting> +</section> + +</section> +<section id="net_fcalls"> +<title>DVB net Function Calls</title> <para>To be written… </para> </section> diff --git a/Documentation/DocBook/dvb/video.xml b/Documentation/DocBook/media/dvb/video.xml index 7bb287e..25fb823 100644 --- a/Documentation/DocBook/dvb/video.xml +++ b/Documentation/DocBook/media/dvb/video.xml @@ -18,15 +18,16 @@ supported on some MPEG decoders made for DVD playback. <section id="video_types"> <title>Video Data Types</title> -<section id="video_format_t"> +<section id="video-format-t"> <title>video_format_t</title> <para>The <emphasis role="tt">video_format_t</emphasis> data type defined by </para> <programlisting> - typedef enum { - VIDEO_FORMAT_4_3, - VIDEO_FORMAT_16_9 - } video_format_t; +typedef enum { + VIDEO_FORMAT_4_3, /⋆ Select 4:3 format ⋆/ + VIDEO_FORMAT_16_9, /⋆ Select 16:9 format. ⋆/ + VIDEO_FORMAT_221_1 /⋆ 2.21:1 ⋆/ +} video_format_t; </programlisting> <para>is used in the VIDEO_SET_FORMAT function (??) to tell the driver which aspect ratio the output hardware (e.g. TV) has. It is also used in the data structures video_status @@ -36,34 +37,36 @@ stream. </para> </section> -<section id="video_display_format_t"> -<title>video_display_format_t</title> +<section id="video-displayformat-t"> +<title>video_displayformat_t</title> <para>In case the display format of the video stream and of the display hardware differ the application has to specify how to handle the cropping of the picture. This can be done using the VIDEO_SET_DISPLAY_FORMAT call (??) which accepts </para> <programlisting> - typedef enum { - VIDEO_PAN_SCAN, - VIDEO_LETTER_BOX, - VIDEO_CENTER_CUT_OUT - } video_display_format_t; +typedef enum { + VIDEO_PAN_SCAN, /⋆ use pan and scan format ⋆/ + VIDEO_LETTER_BOX, /⋆ use letterbox format ⋆/ + VIDEO_CENTER_CUT_OUT /⋆ use center cut out format ⋆/ +} video_displayformat_t; </programlisting> <para>as argument. </para> </section> -<section id="video_stream_source"> +<section id="video-stream-source-t"> <title>video stream source</title> <para>The video stream source is set through the VIDEO_SELECT_SOURCE call and can take the following values, depending on whether we are replaying from an internal (demuxer) or external (user write) source. </para> <programlisting> - typedef enum { - VIDEO_SOURCE_DEMUX, - VIDEO_SOURCE_MEMORY - } video_stream_source_t; +typedef enum { + VIDEO_SOURCE_DEMUX, /⋆ Select the demux as the main source ⋆/ + VIDEO_SOURCE_MEMORY /⋆ If this source is selected, the stream + comes from the user through the write + system call ⋆/ +} video_stream_source_t; </programlisting> <para>VIDEO_SOURCE_DEMUX selects the demultiplexer (fed either by the frontend or the DVR device) as the source of the video stream. If VIDEO_SOURCE_MEMORY @@ -72,49 +75,98 @@ call. </para> </section> -<section id="video_play_state"> +<section id="video-play-state-t"> <title>video play state</title> <para>The following values can be returned by the VIDEO_GET_STATUS call representing the state of video playback. </para> <programlisting> - typedef enum { - VIDEO_STOPPED, - VIDEO_PLAYING, - VIDEO_FREEZED - } video_play_state_t; +typedef enum { + VIDEO_STOPPED, /⋆ Video is stopped ⋆/ + VIDEO_PLAYING, /⋆ Video is currently playing ⋆/ + VIDEO_FREEZED /⋆ Video is freezed ⋆/ +} video_play_state_t; </programlisting> </section> -<section id="video_event"> +<section id="video-command"> +<para>The structure must be zeroed before use by the application +This ensures it can be extended safely in the future.</para> +<title>struct video-command</title> +<programlisting> +struct video_command { + __u32 cmd; + __u32 flags; + union { + struct { + __u64 pts; + } stop; + + struct { + /⋆ 0 or 1000 specifies normal speed, + 1 specifies forward single stepping, + -1 specifies backward single stepping, + >>1: playback at speed/1000 of the normal speed, + <-1: reverse playback at (-speed/1000) of the normal speed. ⋆/ + __s32 speed; + __u32 format; + } play; + + struct { + __u32 data[16]; + } raw; + }; +}; +</programlisting> +</section> + +<section id="video-size-t"> +<title>struct video_size-t</title> +<programlisting> +typedef struct { + int w; + int h; + video_format_t aspect_ratio; +} video_size_t; +</programlisting> +</section> + + +<section id="video-event"> <title>struct video_event</title> <para>The following is the structure of a video event as it is returned by the VIDEO_GET_EVENT call. </para> <programlisting> - struct video_event { - int32_t type; - time_t timestamp; - union { - video_format_t video_format; - } u; - }; +struct video_event { + __s32 type; +#define VIDEO_EVENT_SIZE_CHANGED 1 +#define VIDEO_EVENT_FRAME_RATE_CHANGED 2 +#define VIDEO_EVENT_DECODER_STOPPED 3 +#define VIDEO_EVENT_VSYNC 4 + __kernel_time_t timestamp; + union { + video_size_t size; + unsigned int frame_rate; /⋆ in frames per 1000sec ⋆/ + unsigned char vsync_field; /⋆ unknown/odd/even/progressive ⋆/ + } u; +}; </programlisting> </section> -<section id="video_status"> +<section id="video-status"> <title>struct video_status</title> <para>The VIDEO_GET_STATUS call returns the following structure informing about various states of the playback operation. </para> <programlisting> - struct video_status { - boolean video_blank; - video_play_state_t play_state; - video_stream_source_t stream_source; - video_format_t video_format; - video_displayformat_t display_format; - }; +struct video_status { + int video_blank; /⋆ blank video on freeze? ⋆/ + video_play_state_t play_state; /⋆ current state of playback ⋆/ + video_stream_source_t stream_source; /⋆ current source (demux/memory) ⋆/ + video_format_t video_format; /⋆ current aspect ratio of stream ⋆/ + video_displayformat_t display_format;/⋆ selected cropping mode ⋆/ +}; </programlisting> <para>If video_blank is set video will be blanked out if the channel is changed or if playback is stopped. Otherwise, the last picture will be displayed. play_state indicates if the video is @@ -127,17 +179,17 @@ device. </para> </section> -<section id="video_still_picture"> +<section id="video-still-picture"> <title>struct video_still_picture</title> <para>An I-frame displayed via the VIDEO_STILLPICTURE call is passed on within the following structure. </para> <programlisting> - /⋆ pointer to and size of a single iframe in memory ⋆/ - struct video_still_picture { - char ⋆iFrame; - int32_t size; - }; +/⋆ pointer to and size of a single iframe in memory ⋆/ +struct video_still_picture { + char ⋆iFrame; /⋆ pointer to a single iframe in memory ⋆/ + int32_t size; +}; </programlisting> </section> @@ -164,26 +216,26 @@ bits set according to the hardwares capabilities. </programlisting> </section> -<section id="video_system"> +<section id="video-system"> <title>video system</title> <para>A call to VIDEO_SET_SYSTEM sets the desired video system for TV output. The following system types can be set: </para> <programlisting> - typedef enum { - VIDEO_SYSTEM_PAL, - VIDEO_SYSTEM_NTSC, - VIDEO_SYSTEM_PALN, - VIDEO_SYSTEM_PALNc, - VIDEO_SYSTEM_PALM, - VIDEO_SYSTEM_NTSC60, - VIDEO_SYSTEM_PAL60, - VIDEO_SYSTEM_PALM60 - } video_system_t; +typedef enum { + VIDEO_SYSTEM_PAL, + VIDEO_SYSTEM_NTSC, + VIDEO_SYSTEM_PALN, + VIDEO_SYSTEM_PALNc, + VIDEO_SYSTEM_PALM, + VIDEO_SYSTEM_NTSC60, + VIDEO_SYSTEM_PAL60, + VIDEO_SYSTEM_PALM60 +} video_system_t; </programlisting> </section> -<section id="video_highlight"> +<section id="video-highlight"> <title>struct video_highlight</title> <para>Calling the ioctl VIDEO_SET_HIGHLIGHTS posts the SPU highlight information. The call expects the following format for that information: @@ -210,7 +262,7 @@ call expects the following format for that information: </programlisting> </section> -<section id="video_spu"> +<section id="video-spu"> <title>video SPU</title> <para>Calling VIDEO_SET_SPU deactivates or activates SPU decoding, according to the following format: @@ -224,7 +276,7 @@ following format: </programlisting> </section> -<section id="video_spu_palette"> +<section id="video-spu-palette"> <title>video SPU palette</title> <para>The following structure is used to set the SPU palette by calling VIDEO_SPU_PALETTE: </para> @@ -237,7 +289,7 @@ following format: </programlisting> </section> -<section id="video_navi_pack"> +<section id="video-navi-pack"> <title>video NAVI pack</title> <para>In order to get the navigational data the following structure has to be passed to the ioctl VIDEO_GET_NAVI: @@ -252,7 +304,7 @@ VIDEO_GET_NAVI: </section> -<section id="video_attributes"> +<section id="video-attributes-t"> <title>video attributes</title> <para>The following attributes can be set by a call to VIDEO_SET_ATTRIBUTES: </para> @@ -347,8 +399,7 @@ VIDEO_GET_NAVI: <para>(blocking mode is the default)</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>ENODEV</para> @@ -406,8 +457,7 @@ VIDEO_GET_NAVI: <para>File descriptor returned by a previous call to open().</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EBADF</para> @@ -462,8 +512,7 @@ VIDEO_GET_NAVI: <para>Size of buf.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +<para>RETURN VALUE</para> <informaltable><tgroup cols="2"><tbody><row><entry align="char"> <para>EPERM</para> @@ -488,7 +537,7 @@ VIDEO_GET_NAVI: </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_STOP" role="subsection"><title>VIDEO_STOP</title> <para>DESCRIPTION </para> @@ -543,26 +592,9 @@ role="subsection"><title>VIDEO_STOP</title> <para>FALSE: Show last decoded frame.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error, possibly in the communication with the - DVB subsystem.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_PLAY" role="subsection"><title>VIDEO_PLAY</title> <para>DESCRIPTION </para> @@ -596,26 +628,9 @@ role="subsection"><title>VIDEO_PLAY</title> <para>Equals VIDEO_PLAY for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error, possibly in the communication with the - DVB subsystem.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_FREEZE" role="subsection"><title>VIDEO_FREEZE</title> <para>DESCRIPTION </para> @@ -653,26 +668,9 @@ role="subsection"><title>VIDEO_FREEZE</title> <para>Equals VIDEO_FREEZE for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error, possibly in the communication with the - DVB subsystem.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_CONTINUE" role="subsection"><title>VIDEO_CONTINUE</title> <para>DESCRIPTION </para> @@ -706,26 +704,9 @@ role="subsection"><title>VIDEO_CONTINUE</title> <para>Equals VIDEO_CONTINUE for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error, possibly in the communication with the - DVB subsystem.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_SELECT_SOURCE" role="subsection"><title>VIDEO_SELECT_SOURCE</title> <para>DESCRIPTION </para> @@ -769,26 +750,9 @@ role="subsection"><title>VIDEO_SELECT_SOURCE</title> <para>Indicates which source shall be used for the Video stream.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error, possibly in the communication with the - DVB subsystem.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_SET_BLANK" role="subsection"><title>VIDEO_SET_BLANK</title> <para>DESCRIPTION </para> @@ -835,33 +799,9 @@ role="subsection"><title>VIDEO_SET_BLANK</title> <para>FALSE: Show last decoded frame.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error, possibly in the communication with the - DVB subsystem.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Illegal input parameter</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_GET_STATUS" role="subsection"><title>VIDEO_GET_STATUS</title> <para>DESCRIPTION </para> @@ -903,33 +843,9 @@ role="subsection"><title>VIDEO_GET_STATUS</title> <para>Returns the current status of the Video Device.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error, possibly in the communication with the - DVB subsystem.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>status points to invalid address</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_GET_EVENT" role="subsection"><title>VIDEO_GET_EVENT</title> <para>DESCRIPTION </para> @@ -980,24 +896,9 @@ role="subsection"><title>VIDEO_GET_EVENT</title> stored.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>ev points to invalid address</para> -</entry> - </row><row><entry - align="char"> <para>EWOULDBLOCK</para> </entry><entry align="char"> @@ -1009,16 +910,11 @@ role="subsection"><title>VIDEO_GET_EVENT</title> <para>EOVERFLOW</para> </entry><entry align="char"> -</entry> - </row><row><entry - align="char"> -</entry><entry - align="char"> <para>Overflow in event queue - one or more events were lost.</para> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_SET_DISPLAY_FORMAT" role="subsection"><title>VIDEO_SET_DISPLAY_FORMAT</title> <para>DESCRIPTION </para> @@ -1063,32 +959,9 @@ role="subsection"><title>VIDEO_SET_DISPLAY_FORMAT</title> <para>Selects the video format to be used.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Illegal parameter format.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_STILLPICTURE" role="subsection"><title>VIDEO_STILLPICTURE</title> <para>DESCRIPTION </para> @@ -1133,32 +1006,9 @@ role="subsection"><title>VIDEO_STILLPICTURE</title> <para>Pointer to a location where an I-frame and size is stored.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>sp points to an invalid iframe.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_FAST_FORWARD" role="subsection"><title>VIDEO_FAST_FORWARD</title> <para>DESCRIPTION </para> @@ -1200,39 +1050,17 @@ role="subsection"><title>VIDEO_FAST_FORWARD</title> <para>The number of frames to skip.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> <para>EPERM</para> </entry><entry align="char"> <para>Mode VIDEO_SOURCE_MEMORY not selected.</para> </entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Illegal parameter format.</para> -</entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_SLOWMOTION" role="subsection"><title>VIDEO_SLOWMOTION</title> <para>DESCRIPTION </para> @@ -1274,39 +1102,17 @@ role="subsection"><title>VIDEO_SLOWMOTION</title> <para>The number of times to repeat each frame.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> <para>EPERM</para> </entry><entry align="char"> <para>Mode VIDEO_SOURCE_MEMORY not selected.</para> </entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>Illegal parameter format.</para> -</entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_GET_CAPABILITIES" role="subsection"><title>VIDEO_GET_CAPABILITIES</title> <para>DESCRIPTION </para> @@ -1350,25 +1156,9 @@ role="subsection"><title>VIDEO_GET_CAPABILITIES</title> information.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EFAULT</para> -</entry><entry - align="char"> -<para>cap points to an invalid iframe.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_SET_ID" role="subsection"><title>VIDEO_SET_ID</title> <para>DESCRIPTION </para> @@ -1410,24 +1200,9 @@ role="subsection"><title>VIDEO_SET_ID</title> <para>video sub-stream id</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINTERNAL</para> -</entry><entry - align="char"> -<para>Internal error.</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -1435,7 +1210,7 @@ role="subsection"><title>VIDEO_SET_ID</title> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_CLEAR_BUFFER" role="subsection"><title>VIDEO_CLEAR_BUFFER</title> <para>DESCRIPTION </para> @@ -1468,18 +1243,9 @@ role="subsection"><title>VIDEO_CLEAR_BUFFER</title> <para>Equals VIDEO_CLEAR_BUFFER for this command.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_SET_STREAMTYPE" role="subsection"><title>VIDEO_SET_STREAMTYPE</title> <para>DESCRIPTION </para> @@ -1522,25 +1288,9 @@ role="subsection"><title>VIDEO_SET_STREAMTYPE</title> <para>stream type</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>type is not a valid or supported stream type.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_SET_FORMAT" role="subsection"><title>VIDEO_SET_FORMAT</title> <para>DESCRIPTION </para> @@ -1583,17 +1333,9 @@ role="subsection"><title>VIDEO_SET_FORMAT</title> <para>video format of TV as defined in section ??.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -1601,7 +1343,7 @@ role="subsection"><title>VIDEO_SET_FORMAT</title> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_SET_SYSTEM" role="subsection"><title>VIDEO_SET_SYSTEM</title> <para>DESCRIPTION </para> @@ -1645,17 +1387,9 @@ role="subsection"><title>VIDEO_SET_SYSTEM</title> <para>video system of TV output.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -1663,7 +1397,7 @@ role="subsection"><title>VIDEO_SET_SYSTEM</title> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_SET_HIGHLIGHT" role="subsection"><title>VIDEO_SET_HIGHLIGHT</title> <para>DESCRIPTION </para> @@ -1705,25 +1439,9 @@ role="subsection"><title>VIDEO_SET_HIGHLIGHT</title> <para>SPU Highlight information according to section ??.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> -<informaltable><tgroup cols="2"><tbody><row><entry - align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor.</para> -</entry> - </row><row><entry - align="char"> -<para>EINVAL</para> -</entry><entry - align="char"> -<para>input is not a valid highlight setting.</para> -</entry> - </row></tbody></tgroup></informaltable> +&return-value-dvb; -</section><section +</section><section id="VIDEO_SET_SPU" role="subsection"><title>VIDEO_SET_SPU</title> <para>DESCRIPTION </para> @@ -1766,17 +1484,9 @@ role="subsection"><title>VIDEO_SET_SPU</title> to section ??.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -1785,7 +1495,7 @@ role="subsection"><title>VIDEO_SET_SPU</title> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_SET_SPU_PALETTE" role="subsection"><title>VIDEO_SET_SPU_PALETTE</title> <para>DESCRIPTION </para> @@ -1827,17 +1537,9 @@ role="subsection"><title>VIDEO_SET_SPU_PALETTE</title> <para>SPU palette according to section ??.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> @@ -1845,7 +1547,7 @@ role="subsection"><title>VIDEO_SET_SPU_PALETTE</title> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_GET_NAVI" role="subsection"><title>VIDEO_GET_NAVI</title> <para>DESCRIPTION </para> @@ -1889,17 +1591,9 @@ role="subsection"><title>VIDEO_GET_NAVI</title> ??.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EFAULT</para> </entry><entry align="char"> @@ -1907,7 +1601,7 @@ role="subsection"><title>VIDEO_GET_NAVI</title> </entry> </row></tbody></tgroup></informaltable> -</section><section +</section><section id="VIDEO_SET_ATTRIBUTES" role="subsection"><title>VIDEO_SET_ATTRIBUTES</title> <para>DESCRIPTION </para> @@ -1951,17 +1645,9 @@ role="subsection"><title>VIDEO_SET_ATTRIBUTES</title> <para>video attributes according to section ??.</para> </entry> </row></tbody></tgroup></informaltable> -<para>ERRORS -</para> +&return-value-dvb; <informaltable><tgroup cols="2"><tbody><row><entry align="char"> -<para>EBADF</para> -</entry><entry - align="char"> -<para>fd is not a valid open file descriptor</para> -</entry> - </row><row><entry - align="char"> <para>EINVAL</para> </entry><entry align="char"> diff --git a/Documentation/DocBook/media/dvbstb.png.b64 b/Documentation/DocBook/media/dvbstb.png.b64 new file mode 100644 index 0000000..e8b52fd --- /dev/null +++ b/Documentation/DocBook/media/dvbstb.png.b64 @@ -0,0 +1,398 @@ +iVBORw0KGgoAAAANSUhEUgAAAzMAAAGaCAYAAAA7Jx25AAAABmJLR0QAAAAAAAD5Q7t/AAAACXBI +WXMAAA3XAAANiQFmEOuiAAAgAElEQVR42uzdd1RU18I28GdgKFZUBE0saFA0KoqFFkEhKhbAQmxJ +bIkNNEpMEUwsMZarJMZrw4KxRExQczUqil0jRBA1GAjGQqLYC4TemdnfH76cj3HodYDntxaLmTll 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+iM9GbfE0p2V0g5QUk2BJSbCkJFhSUoPW/wfr5tj8wgE+HwAAAABJRU5ErkJggg== diff --git a/Documentation/DocBook/v4l/.gitignore b/Documentation/DocBook/media/v4l/.gitignore index d7ec32e..d7ec32e 100644 --- a/Documentation/DocBook/v4l/.gitignore +++ b/Documentation/DocBook/media/v4l/.gitignore diff --git a/Documentation/DocBook/v4l/biblio.xml b/Documentation/DocBook/media/v4l/biblio.xml index afc8a0d..afc8a0d 100644 --- a/Documentation/DocBook/v4l/biblio.xml +++ b/Documentation/DocBook/media/v4l/biblio.xml diff --git a/Documentation/DocBook/v4l/capture.c.xml b/Documentation/DocBook/media/v4l/capture.c.xml index 1c5c49a..1c5c49a 100644 --- a/Documentation/DocBook/v4l/capture.c.xml +++ b/Documentation/DocBook/media/v4l/capture.c.xml diff --git a/Documentation/DocBook/v4l/common.xml b/Documentation/DocBook/media/v4l/common.xml index 9028721..a86f7a0 100644 --- a/Documentation/DocBook/v4l/common.xml +++ b/Documentation/DocBook/media/v4l/common.xml @@ -236,7 +236,15 @@ important parts of the API.</para> <para>The &VIDIOC-QUERYCAP; ioctl is available to check if the kernel device is compatible with this specification, and to query the <link linkend="devices">functions</link> and <link linkend="io">I/O -methods</link> supported by the device. Other features can be queried +methods</link> supported by the device.</para> + + <para>Starting with kernel version 3.1, VIDIOC-QUERYCAP will return the +V4L2 API version used by the driver, with generally matches the Kernel version. +There's no need of using &VIDIOC-QUERYCAP; to check if an specific ioctl is +supported, the V4L2 core now returns ENOIOCTLCMD if a driver doesn't provide +support for an ioctl.</para> + + <para>Other features can be queried by calling the respective ioctl, for example &VIDIOC-ENUMINPUT; to learn about the number, types and names of video connectors on the device. Although abstraction is a major objective of this API, the diff --git a/Documentation/DocBook/v4l/compat.xml b/Documentation/DocBook/media/v4l/compat.xml index 9f7cd4f..b68698f 100644 --- a/Documentation/DocBook/v4l/compat.xml +++ b/Documentation/DocBook/media/v4l/compat.xml @@ -10,12 +10,10 @@ driver writers to port or update their code.</para> <para>The Video For Linux API was first introduced in Linux 2.1 to unify and replace various TV and radio device related interfaces, developed independently by driver writers in prior years. Starting -with Linux 2.5 the much improved V4L2 API replaces the V4L API, -although existing drivers will continue to support V4L applications in -the future, either directly or through the V4L2 compatibility layer in -the <filename>videodev</filename> kernel module translating ioctls on -the fly. For a transition period not all drivers will support the V4L2 -API.</para> +with Linux 2.5 the much improved V4L2 API replaces the V4L API. +The support for the old V4L calls were removed from Kernel, but the +library <xref linkend="libv4l" /> supports the conversion of a V4L +API system call into a V4L2 one.</para> <section> <title>Opening and Closing Devices</title> @@ -84,12 +82,7 @@ not compatible with V4L or V4L2.</para> </footnote>, device file. V4L2 drivers <emphasis>may</emphasis> support multiple opens, see <xref linkend="open" /> for details and consequences.</para> - <para>V4L drivers respond to V4L2 ioctls with an &EINVAL;. The -compatibility layer in the V4L2 <filename>videodev</filename> module -can translate V4L ioctl requests to their V4L2 counterpart, however a -V4L2 driver usually needs more preparation to become fully V4L -compatible. This is covered in more detail in <xref - linkend="driver" />.</para> + <para>V4L drivers respond to V4L2 ioctls with an &EINVAL;.</para> </section> <section> @@ -2367,6 +2360,24 @@ that used it. It was originally scheduled for removal in 2.6.35. </listitem> </orderedlist> </section> + <section> + <title>V4L2 in Linux 3.1</title> + <orderedlist> + <listitem> + <para>VIDIOC_QUERYCAP now returns a per-subsystem version instead of a per-driver one.</para> + <para>Standardize an error code for invalid ioctl.</para> + <para>Added V4L2_CTRL_TYPE_BITMASK.</para> + </listitem> + </orderedlist> + </section> + <section> + <title>V4L2 in Linux 3.2</title> + <orderedlist> + <listitem> + <para>V4L2_CTRL_FLAG_VOLATILE was added to signal volatile controls to userspace.</para> + </listitem> + </orderedlist> + </section> <section id="other"> <title>Relation of V4L2 to other Linux multimedia APIs</title> @@ -2472,6 +2483,12 @@ ioctls.</para> <listitem> <para>&VIDIOC-DBG-G-CHIP-IDENT; ioctl.</para> </listitem> + <listitem> + <para>Flash API. <xref linkend="flash-controls" /></para> + </listitem> + <listitem> + <para>&VIDIOC-CREATE-BUFS; and &VIDIOC-PREPARE-BUF; ioctls.</para> + </listitem> </itemizedlist> </section> diff --git a/Documentation/DocBook/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml index a920ee8..3bc5ee8 100644 --- a/Documentation/DocBook/v4l/controls.xml +++ b/Documentation/DocBook/media/v4l/controls.xml @@ -51,6 +51,10 @@ readability until any ioctl (querying the properties) is called.</para> </footnote></para> + <para> + All controls use machine endianness. + </para> + <table pgwide="1" frame="none" id="control-id"> <title>Control IDs</title> <tgroup cols="3"> @@ -228,8 +232,9 @@ control is deprecated. New drivers and applications should use the <entry>Enables a power line frequency filter to avoid flicker. Possible values for <constant>enum v4l2_power_line_frequency</constant> are: <constant>V4L2_CID_POWER_LINE_FREQUENCY_DISABLED</constant> (0), -<constant>V4L2_CID_POWER_LINE_FREQUENCY_50HZ</constant> (1) and -<constant>V4L2_CID_POWER_LINE_FREQUENCY_60HZ</constant> (2).</entry> +<constant>V4L2_CID_POWER_LINE_FREQUENCY_50HZ</constant> (1), +<constant>V4L2_CID_POWER_LINE_FREQUENCY_60HZ</constant> (2) and +<constant>V4L2_CID_POWER_LINE_FREQUENCY_AUTO</constant> (3).</entry> </row> <row> <entry><constant>V4L2_CID_HUE_AUTO</constant></entry> @@ -325,6 +330,22 @@ minimum value disables backlight compensation.</entry> <constant>V4L2_CID_ILLUMINATORS_2</constant> + 1).</entry> </row> <row> + <entry><constant>V4L2_CID_MIN_BUFFERS_FOR_CAPTURE</constant></entry> + <entry>integer</entry> + <entry>This is a read-only control that can be read by the application +and used as a hint to determine the number of CAPTURE buffers to pass to REQBUFS. +The value is the minimum number of CAPTURE buffers that is necessary for hardware +to work.</entry> + </row> + <row> + <entry><constant>V4L2_CID_MIN_BUFFERS_FOR_OUTPUT</constant></entry> + <entry>integer</entry> + <entry>This is a read-only control that can be read by the application +and used as a hint to determine the number of OUTPUT buffers to pass to REQBUFS. +The value is the minimum number of OUTPUT buffers that is necessary for hardware +to work.</entry> + </row> + <row> <entry><constant>V4L2_CID_PRIVATE_BASE</constant></entry> <entry></entry> <entry>ID of the first custom (driver specific) control. @@ -545,6 +566,10 @@ may not be supported (<constant>VIDIOC_QUERYMENU</constant> will return an error). A good example is the list of supported MPEG audio bitrates. Some drivers only support one or two bitrates, others support a wider range.</para> + + <para> + All controls use machine endianness. + </para> </section> <section> @@ -670,7 +695,8 @@ caption of a Tab page in a GUI, for example.</entry> </row><row><entry spanname="descr">The MPEG-1, -2 or -4 output stream type. One cannot assume anything here. Each hardware MPEG encoder tends to support different subsets of the available MPEG -stream types. The currently defined stream types are:</entry> +stream types. This control is specific to multiplexed MPEG streams. +The currently defined stream types are:</entry> </row> <row> <entrytbl spanname="descr" cols="2"> @@ -800,6 +826,7 @@ frequency. Possible values are:</entry> <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_ENCODING</constant> </entry> <entry>enum v4l2_mpeg_audio_encoding</entry> </row><row><entry spanname="descr">MPEG Audio encoding. +This control is specific to multiplexed MPEG streams. Possible values are:</entry> </row> <row> @@ -1250,7 +1277,8 @@ and reproducible audio bitstream. 0 = unmuted, 1 = muted.</entry> <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_ENCODING</constant> </entry> <entry>enum v4l2_mpeg_video_encoding</entry> </row><row><entry spanname="descr">MPEG Video encoding -method. Possible values are:</entry> +method. This control is specific to multiplexed MPEG streams. +Possible values are:</entry> </row> <row> <entrytbl spanname="descr" cols="2"> @@ -1406,6 +1434,959 @@ of the video. The supplied 32-bit integer is interpreted as follows (bit </tbody> </entrytbl> </row> + + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE</constant> </entry> + <entry>boolean</entry> + </row> + <row><entry spanname="descr">If enabled the decoder expects to receive a single slice per buffer, otherwise +the decoder expects a single frame in per buffer. Applicable to the decoder, all codecs. +</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE</constant> </entry> + <entry>boolean</entry> + </row> + <row><entry spanname="descr">Enable writing sample aspect ratio in the Video Usability Information. +Applicable to the H264 encoder.</entry> + </row> + + <row><entry></entry></row> + <row id="v4l2-mpeg-video-h264-vui-sar-idc"> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC</constant> </entry> + <entry>enum v4l2_mpeg_video_h264_vui_sar_idc</entry> + </row> + <row><entry spanname="descr">VUI sample aspect ratio indicator for H.264 encoding. The value +is defined in the table E-1 in the standard. Applicable to the H264 encoder.</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_UNSPECIFIED</constant> </entry> + <entry>Unspecified</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1</constant> </entry> + <entry>1x1</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_12x11</constant> </entry> + <entry>12x11</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_10x11</constant> </entry> + <entry>10x11</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_16x11</constant> </entry> + <entry>16x11</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_40x33</constant> </entry> + <entry>40x33</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_24x11</constant> </entry> + <entry>24x11</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_20x11</constant> </entry> + <entry>20x11</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_32x11</constant> </entry> + <entry>32x11</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_80x33</constant> </entry> + <entry>80x33</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_18x11</constant> </entry> + <entry>18x11</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_15x11</constant> </entry> + <entry>15x11</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_64x33</constant> </entry> + <entry>64x33</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_160x99</constant> </entry> + <entry>160x99</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_4x3</constant> </entry> + <entry>4x3</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_3x2</constant> </entry> + <entry>3x2</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_2x1</constant> </entry> + <entry>2x1</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_EXTENDED</constant> </entry> + <entry>Extended SAR</entry> + </row> + </tbody> + </entrytbl> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Extended sample aspect ratio width for H.264 VUI encoding. +Applicable to the H264 encoder.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Extended sample aspect ratio height for H.264 VUI encoding. +Applicable to the H264 encoder.</entry> + </row> + + <row><entry></entry></row> + <row id="v4l2-mpeg-video-h264-level"> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LEVEL</constant> </entry> + <entry>enum v4l2_mpeg_video_h264_level</entry> + </row> + <row><entry spanname="descr">The level information for the H264 video elementary stream. +Applicable to the H264 encoder. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_0</constant> </entry> + <entry>Level 1.0</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1B</constant> </entry> + <entry>Level 1B</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_1</constant> </entry> + <entry>Level 1.1</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_2</constant> </entry> + <entry>Level 1.2</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_3</constant> </entry> + <entry>Level 1.3</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_2_0</constant> </entry> + <entry>Level 2.0</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_2_1</constant> </entry> + <entry>Level 2.1</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_2_2</constant> </entry> + <entry>Level 2.2</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_3_0</constant> </entry> + <entry>Level 3.0</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_3_1</constant> </entry> + <entry>Level 3.1</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_3_2</constant> </entry> + <entry>Level 3.2</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_4_0</constant> </entry> + <entry>Level 4.0</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_4_1</constant> </entry> + <entry>Level 4.1</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_4_2</constant> </entry> + <entry>Level 4.2</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_5_0</constant> </entry> + <entry>Level 5.0</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_5_1</constant> </entry> + <entry>Level 5.1</entry> + </row> + </tbody> + </entrytbl> + </row> + + <row><entry></entry></row> + <row id="v4l2-mpeg-video-mpeg4-level"> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL</constant> </entry> + <entry>enum v4l2_mpeg_video_mpeg4_level</entry> + </row> + <row><entry spanname="descr">The level information for the MPEG4 elementary stream. +Applicable to the MPEG4 encoder. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_VIDEO_LEVEL_0</constant> </entry> + <entry>Level 0</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_LEVEL_0B</constant> </entry> + <entry>Level 0b</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_LEVEL_1</constant> </entry> + <entry>Level 1</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_LEVEL_2</constant> </entry> + <entry>Level 2</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_LEVEL_3</constant> </entry> + <entry>Level 3</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_LEVEL_3B</constant> </entry> + <entry>Level 3b</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_LEVEL_4</constant> </entry> + <entry>Level 4</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_LEVEL_5</constant> </entry> + <entry>Level 5</entry> + </row> + </tbody> + </entrytbl> + </row> + + <row><entry></entry></row> + <row id="v4l2-mpeg-video-h264-profile"> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_PROFILE</constant> </entry> + <entry>enum v4l2_mpeg_video_h264_profile</entry> + </row> + <row><entry spanname="descr">The profile information for H264. +Applicable to the H264 encoder. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE</constant> </entry> + <entry>Baseline profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE</constant> </entry> + <entry>Constrained Baseline profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_MAIN</constant> </entry> + <entry>Main profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED</constant> </entry> + <entry>Extended profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH</constant> </entry> + <entry>High profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10</constant> </entry> + <entry>High 10 profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_422</constant> </entry> + <entry>High 422 profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_444_PREDICTIVE</constant> </entry> + <entry>High 444 Predictive profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10_INTRA</constant> </entry> + <entry>High 10 Intra profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_422_INTRA</constant> </entry> + <entry>High 422 Intra profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_444_INTRA</constant> </entry> + <entry>High 444 Intra profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_CAVLC_444_INTRA</constant> </entry> + <entry>CAVLC 444 Intra profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_BASELINE</constant> </entry> + <entry>Scalable Baseline profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_HIGH</constant> </entry> + <entry>Scalable High profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_HIGH_INTRA</constant> </entry> + <entry>Scalable High Intra profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH</constant> </entry> + <entry>Stereo High profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_MULTIVIEW_HIGH</constant> </entry> + <entry>Multiview High profile</entry> + </row> + + </tbody> + </entrytbl> + </row> + + <row><entry></entry></row> + <row id="v4l2-mpeg-video-mpeg4-profile"> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE</constant> </entry> + <entry>enum v4l2_mpeg_video_mpeg4_profile</entry> + </row> + <row><entry spanname="descr">The profile information for MPEG4. +Applicable to the MPEG4 encoder. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_VIDEO_PROFILE_SIMPLE</constant> </entry> + <entry>Simple profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_PROFILE_ADVANCED_SIMPLE</constant> </entry> + <entry>Advanced Simple profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_PROFILE_CORE</constant> </entry> + <entry>Core profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_PROFILE_SIMPLE_SCALABLE</constant> </entry> + <entry>Simple Scalable profile</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_PROFILE_ADVANCED_CODING_EFFICIENCY</constant> </entry> + <entry></entry> + </row> + </tbody> + </entrytbl> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MAX_REF_PIC</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">The maximum number of reference pictures used for encoding. +Applicable to the encoder. +</entry> + </row> + + <row><entry></entry></row> + <row id="v4l2-mpeg-video-multi-slice-mode"> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE</constant> </entry> + <entry>enum v4l2_mpeg_video_multi_slice_mode</entry> + </row> + <row><entry spanname="descr">Determines how the encoder should handle division of frame into slices. +Applicable to the encoder. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE</constant> </entry> + <entry>Single slice per frame.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_MB</constant> </entry> + <entry>Multiple slices with set maximum number of macroblocks per slice.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES</constant> </entry> + <entry>Multiple slice with set maximum size in bytes per slice.</entry> + </row> + </tbody> + </entrytbl> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">The maximum number of macroblocks in a slice. Used when +<constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE</constant> is set to <constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_MB</constant>. +Applicable to the encoder.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">The maximum size of a slice in bytes. Used when +<constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE</constant> is set to <constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES</constant>. +Applicable to the encoder.</entry> + </row> + + <row><entry></entry></row> + <row id="v4l2-mpeg-video-h264-loop-filter-mode"> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE</constant> </entry> + <entry>enum v4l2_mpeg_video_h264_loop_filter_mode</entry> + </row> + <row><entry spanname="descr">Loop filter mode for H264 encoder. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED</constant> </entry> + <entry>Loop filter is enabled.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED</constant> </entry> + <entry>Loop filter is disabled.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY</constant> </entry> + <entry>Loop filter is disabled at the slice boundary.</entry> + </row> + </tbody> + </entrytbl> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Loop filter alpha coefficient, defined in the H264 standard. +Applicable to the H264 encoder.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Loop filter beta coefficient, defined in the H264 standard. +Applicable to the H264 encoder.</entry> + </row> + + <row><entry></entry></row> + <row id="v4l2-mpeg-video-h264-entropy-mode"> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE</constant> </entry> + <entry>enum v4l2_mpeg_video_h264_entropy_mode</entry> + </row> + <row><entry spanname="descr">Entropy coding mode for H264 - CABAC/CAVALC. +Applicable to the H264 encoder. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CAVLC</constant> </entry> + <entry>Use CAVLC entropy coding.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC</constant> </entry> + <entry>Use CABAC entropy coding.</entry> + </row> + </tbody> + </entrytbl> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM</constant> </entry> + <entry>boolean</entry> + </row> + <row><entry spanname="descr">Enable 8X8 transform for H264. Applicable to the H264 encoder.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Cyclic intra macroblock refresh. This is the number of continuous macroblocks +refreshed every frame. Each frame a succesive set of macroblocks is refreshed until the cycle completes and starts from the +top of the frame. Applicable to H264, H263 and MPEG4 encoder.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE</constant> </entry> + <entry>boolean</entry> + </row> + <row><entry spanname="descr">Frame level rate control enable. +If this control is disabled then the quantization parameter for each frame type is constant and set with appropriate controls +(e.g. <constant>V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP</constant>). +If frame rate control is enabled then quantization parameter is adjusted to meet the chosen bitrate. Minimum and maximum value +for the quantization parameter can be set with appropriate controls (e.g. <constant>V4L2_CID_MPEG_VIDEO_H263_MIN_QP</constant>). +Applicable to encoders.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant> </entry> + <entry>boolean</entry> + </row> + <row><entry spanname="descr">Macroblock level rate control enable. +Applicable to the MPEG4 and H264 encoders.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_QPEL</constant> </entry> + <entry>boolean</entry> + </row> + <row><entry spanname="descr">Quarter pixel motion estimation for MPEG4. Applicable to the MPEG4 encoder.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Quantization parameter for an I frame for H263. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_MIN_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Minimum quantization parameter for H263. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_MAX_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Maximum quantization parameter for H263. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Quantization parameter for an P frame for H263. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Quantization parameter for an B frame for H263. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Quantization parameter for an I frame for H264. Valid range: from 0 to 51.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_MIN_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Minimum quantization parameter for H264. Valid range: from 0 to 51.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_MAX_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Maximum quantization parameter for H264. Valid range: from 0 to 51.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Quantization parameter for an P frame for H264. Valid range: from 0 to 51.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Quantization parameter for an B frame for H264. Valid range: from 0 to 51.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Quantization parameter for an I frame for MPEG4. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Minimum quantization parameter for MPEG4. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Maximum quantization parameter for MPEG4. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Quantization parameter for an P frame for MPEG4. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Quantization parameter for an B frame for MPEG4. Valid range: from 1 to 31.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VBV_SIZE</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">The Video Buffer Verifier size in kilobytes, it is used as a limitation of frame skip. +The VBV is defined in the standard as a mean to verify that the produced stream will be succesfully decoded. +The standard describes it as "Part of a hypothetical decoder that is conceptually connected to the +output of the encoder. Its purpose is to provide a constraint on the variability of the data rate that an +encoder or editing process may produce.". +Applicable to the MPEG1, MPEG2, MPEG4 encoders.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">The Coded Picture Buffer size in kilobytes, it is used as a limitation of frame skip. +The CPB is defined in the H264 standard as a mean to verify that the produced stream will be succesfully decoded. +Applicable to the H264 encoder.</entry> + </row> + + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_I_PERIOD</constant> </entry> + <entry>integer</entry> + </row> + <row><entry spanname="descr">Period between I-frames in the open GOP for H264. In case of an open GOP +this is the period between two I-frames. The period between IDR (Instantaneous Decoding Refresh) frames is taken from the GOP_SIZE control. +An IDR frame, which stands for Instantaneous Decoding Refresh is an I-frame after which no prior frames are +referenced. This means that a stream can be restarted from an IDR frame without the need to store or decode any +previous frames. Applicable to the H264 encoder.</entry> + </row> + + <row><entry></entry></row> + <row id="v4l2-mpeg-video-header-mode"> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_HEADER_MODE</constant> </entry> + <entry>enum v4l2_mpeg_video_header_mode</entry> + </row> + <row><entry spanname="descr">Determines whether the header is returned as the first buffer or is +it returned together with the first frame. Applicable to encoders. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE</constant> </entry> + <entry>The stream header is returned separately in the first buffer.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME</constant> </entry> + <entry>The stream header is returned together with the first encoded frame.</entry> + </row> + </tbody> + </entrytbl> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER</constant> </entry> + <entry>boolean</entry> + </row><row><entry spanname="descr">Enabled the deblocking post processing filter for MPEG4 decoder. +Applicable to the MPEG4 decoder.</entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_VOP_TIME_RES</constant> </entry> + <entry>integer</entry> + </row><row><entry spanname="descr">vop_time_increment_resolution value for MPEG4. Applicable to the MPEG4 encoder.</entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_VOP_TIME_INC</constant> </entry> + <entry>integer</entry> + </row><row><entry spanname="descr">vop_time_increment value for MPEG4. Applicable to the MPEG4 encoder.</entry> + </row> + + </tbody> + </tgroup> + </table> + </section> + + <section> + <title>MFC 5.1 MPEG Controls</title> + + <para>The following MPEG class controls deal with MPEG +decoding and encoding settings that are specific to the Multi Format Codec 5.1 device present +in the S5P family of SoCs by Samsung. +</para> + + <table pgwide="1" frame="none" id="mfc51-control-id"> + <title>MFC 5.1 Control IDs</title> + <tgroup cols="4"> + <colspec colname="c1" colwidth="1*" /> + <colspec colname="c2" colwidth="6*" /> + <colspec colname="c3" colwidth="2*" /> + <colspec colname="c4" colwidth="6*" /> + <spanspec namest="c1" nameend="c2" spanname="id" /> + <spanspec namest="c2" nameend="c4" spanname="descr" /> + <thead> + <row> + <entry spanname="id" align="left">ID</entry> + <entry align="left">Type</entry> + </row><row><entry spanname="descr" align="left">Description</entry> + </row> + </thead> + <tbody valign="top"> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_DECODER_H264_DISPLAY_DELAY_ENABLE</constant> </entry> + <entry>integer</entry> + </row><row><entry spanname="descr">If the display delay is enabled then the decoder has to return a +CAPTURE buffer after processing a certain number of OUTPUT buffers. If this number is low, then it may result in +buffers not being dequeued in display order. In addition hardware may still use those buffers as reference, thus +application should not write to those buffers. This feature can be used for example for generating thumbnails of videos. +Applicable to the H264 decoder. + </entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_DECODER_H264_DISPLAY_DELAY</constant> </entry> + <entry>integer</entry> + </row><row><entry spanname="descr">Display delay value for H264 decoder. +The decoder is forced to return a decoded frame after the set 'display delay' number of frames. If this number is +low it may result in frames returned out of dispaly order, in addition the hardware may still be using the returned buffer +as a reference picture for subsequent frames. +</entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_NUM_REF_PIC_FOR_P</constant> </entry> + <entry>integer</entry> + </row><row><entry spanname="descr">The number of reference pictures used for encoding a P picture. +Applicable to the H264 encoder.</entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_PADDING</constant> </entry> + <entry>boolean</entry> + </row><row><entry spanname="descr">Padding enable in the encoder - use a color instead of repeating border pixels. +Applicable to encoders.</entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_PADDING_YUV</constant> </entry> + <entry>integer</entry> + </row><row><entry spanname="descr">Padding color in the encoder. Applicable to encoders. The supplied 32-bit integer is interpreted as follows (bit +0 = least significant bit):</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry>Bit 0:7</entry> + <entry>V chrominance information</entry> + </row> + <row> + <entry>Bit 8:15</entry> + <entry>U chrominance information</entry> + </row> + <row> + <entry>Bit 16:23</entry> + <entry>Y luminance information</entry> + </row> + <row> + <entry>Bit 24:31</entry> + <entry>Must be zero.</entry> + </row> + </tbody> + </entrytbl> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_RC_REACTION_COEFF</constant> </entry> + <entry>integer</entry> + </row><row><entry spanname="descr">Reaction coefficient for MFC rate control. Applicable to encoders. +<para>Note 1: Valid only when the frame level RC is enabled.</para> +<para>Note 2: For tight CBR, this field must be small (ex. 2 ~ 10). +For VBR, this field must be large (ex. 100 ~ 1000).</para> +<para>Note 3: It is not recommended to use the greater number than FRAME_RATE * (10^9 / BIT_RATE).</para> +</entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_DARK</constant> </entry> + <entry>boolean</entry> + </row><row><entry spanname="descr">Adaptive rate control for dark region. +Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>). +Applicable to the H264 encoder.</entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_SMOOTH</constant> </entry> + <entry>boolean</entry> + </row><row><entry spanname="descr">Adaptive rate control for smooth region. +Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>). +Applicable to the H264 encoder.</entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_STATIC</constant> </entry> + <entry>boolean</entry> + </row><row><entry spanname="descr">Adaptive rate control for static region. +Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>). +Applicable to the H264 encoder.</entry> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_ACTIVITY</constant> </entry> + <entry>boolean</entry> + </row><row><entry spanname="descr">Adaptive rate control for activity region. +Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>). +Applicable to the H264 encoder.</entry> + </row> + <row><entry></entry></row> + <row id="v4l2-mpeg-mfc51-video-frame-skip-mode"> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_FRAME_SKIP_MODE</constant> </entry> + <entry>enum v4l2_mpeg_mfc51_video_frame_skip_mode</entry> + </row> + <row><entry spanname="descr"> +Indicates in what conditions the encoder should skip frames. If encoding a frame would cause the encoded stream to be larger then +a chosen data limit then the frame will be skipped. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_MFC51_FRAME_SKIP_MODE_DISABLED</constant> </entry> + <entry>Frame skip mode is disabled.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_MFC51_FRAME_SKIP_MODE_LEVEL_LIMIT</constant> </entry> + <entry>Frame skip mode enabled and buffer limit is set by the chosen level and is defined by the standard.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_MFC51_FRAME_SKIP_MODE_BUF_LIMIT</constant> </entry> + <entry>Frame skip mode enabled and buffer limit is set by the VBV (MPEG1/2/4) or CPB (H264) buffer size control.</entry> + </row> + </tbody> + </entrytbl> + </row> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_RC_FIXED_TARGET_BIT</constant> </entry> + <entry>integer</entry> + </row><row><entry spanname="descr">Enable rate-control with fixed target bit. +If this setting is enabled, then the rate control logic of the encoder will calculate the average bitrate +for a GOP and keep it below or equal the set bitrate target. Otherwise the rate control logic calculates the +overall average bitrate for the stream and keeps it below or equal to the set bitrate. In the first case +the average bitrate for the whole stream will be smaller then the set bitrate. This is caused because the +average is calculated for smaller number of frames, on the other hand enabling this setting will ensure that +the stream will meet tight bandwidth contraints. Applicable to encoders. +</entry> + </row> + <row><entry></entry></row> + <row id="v4l2-mpeg-mfc51-video-force-frame-type"> + <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_FORCE_FRAME_TYPE</constant> </entry> + <entry>enum v4l2_mpeg_mfc51_video_force_frame_type</entry> + </row> + <row><entry spanname="descr">Force a frame type for the next queued buffer. Applicable to encoders. +Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_MPEG_MFC51_FORCE_FRAME_TYPE_DISABLED</constant> </entry> + <entry>Forcing a specific frame type disabled.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_MFC51_FORCE_FRAME_TYPE_I_FRAME</constant> </entry> + <entry>Force an I-frame.</entry> + </row> + <row> + <entry><constant>V4L2_MPEG_MFC51_FORCE_FRAME_TYPE_NOT_CODED</constant> </entry> + <entry>Force a non-coded frame.</entry> + </row> + </tbody> + </entrytbl> + </row> </tbody> </tgroup> </table> @@ -2092,6 +3073,289 @@ manually or automatically if set to zero. Unit, range and step are driver-specif <para>For more details about RDS specification, refer to <xref linkend="en50067" /> document, from CENELEC.</para> </section> + + <section id="flash-controls"> + <title>Flash Control Reference</title> + + <note> + <title>Experimental</title> + + <para>This is an <link linkend="experimental">experimental</link> +interface and may change in the future.</para> + </note> + + <para> + The V4L2 flash controls are intended to provide generic access + to flash controller devices. Flash controller devices are + typically used in digital cameras. + </para> + + <para> + The interface can support both LED and xenon flash devices. As + of writing this, there is no xenon flash driver using this + interface. + </para> + + <section id="flash-controls-use-cases"> + <title>Supported use cases</title> + + <section> + <title>Unsynchronised LED flash (software strobe)</title> + + <para> + Unsynchronised LED flash is controlled directly by the + host as the sensor. The flash must be enabled by the host + before the exposure of the image starts and disabled once + it ends. The host is fully responsible for the timing of + the flash. + </para> + + <para>Example of such device: Nokia N900.</para> + </section> + + <section> + <title>Synchronised LED flash (hardware strobe)</title> + + <para> + The synchronised LED flash is pre-programmed by the host + (power and timeout) but controlled by the sensor through a + strobe signal from the sensor to the flash. + </para> + + <para> + The sensor controls the flash duration and timing. This + information typically must be made available to the + sensor. + </para> + + </section> + + <section> + <title>LED flash as torch</title> + + <para> + LED flash may be used as torch in conjunction with another + use case involving camera or individually. + </para> + + </section> + + </section> + + <table pgwide="1" frame="none" id="flash-control-id"> + <title>Flash Control IDs</title> + + <tgroup cols="4"> + <colspec colname="c1" colwidth="1*" /> + <colspec colname="c2" colwidth="6*" /> + <colspec colname="c3" colwidth="2*" /> + <colspec colname="c4" colwidth="6*" /> + <spanspec namest="c1" nameend="c2" spanname="id" /> + <spanspec namest="c2" nameend="c4" spanname="descr" /> + <thead> + <row> + <entry spanname="id" align="left">ID</entry> + <entry align="left">Type</entry> + </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> + </row> + </thead> + <tbody valign="top"> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_CLASS</constant></entry> + <entry>class</entry> + </row> + <row> + <entry spanname="descr">The FLASH class descriptor.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_LED_MODE</constant></entry> + <entry>menu</entry> + </row> + <row id="v4l2-flash-led-mode"> + <entry spanname="descr">Defines the mode of the flash LED, + the high-power white LED attached to the flash controller. + Setting this control may not be possible in presence of + some faults. See V4L2_CID_FLASH_FAULT.</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_FLASH_LED_MODE_NONE</constant></entry> + <entry>Off.</entry> + </row> + <row> + <entry><constant>V4L2_FLASH_LED_MODE_FLASH</constant></entry> + <entry>Flash mode.</entry> + </row> + <row> + <entry><constant>V4L2_FLASH_LED_MODE_TORCH</constant></entry> + <entry>Torch mode. See V4L2_CID_FLASH_TORCH_INTENSITY.</entry> + </row> + </tbody> + </entrytbl> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_SOURCE</constant></entry> + <entry>menu</entry> + </row> + <row id="v4l2-flash-strobe-source"><entry + spanname="descr">Defines the source of the flash LED + strobe.</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_FLASH_STROBE_SOURCE_SOFTWARE</constant></entry> + <entry>The flash strobe is triggered by using + the V4L2_CID_FLASH_STROBE control.</entry> + </row> + <row> + <entry><constant>V4L2_FLASH_STROBE_SOURCE_EXTERNAL</constant></entry> + <entry>The flash strobe is triggered by an + external source. Typically this is a sensor, + which makes it possible to synchronises the + flash strobe start to exposure start.</entry> + </row> + </tbody> + </entrytbl> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE</constant></entry> + <entry>button</entry> + </row> + <row> + <entry spanname="descr">Strobe flash. Valid when + V4L2_CID_FLASH_LED_MODE is set to + V4L2_FLASH_LED_MODE_FLASH and V4L2_CID_FLASH_STROBE_SOURCE + is set to V4L2_FLASH_STROBE_SOURCE_SOFTWARE. Setting this + control may not be possible in presence of some faults. + See V4L2_CID_FLASH_FAULT.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STOP</constant></entry> + <entry>button</entry> + </row> + <row><entry spanname="descr">Stop flash strobe immediately.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STATUS</constant></entry> + <entry>boolean</entry> + </row> + <row> + <entry spanname="descr">Strobe status: whether the flash + is strobing at the moment or not. This is a read-only + control.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_TIMEOUT</constant></entry> + <entry>integer</entry> + </row> + <row> + <entry spanname="descr">Hardware timeout for flash. The + flash strobe is stopped after this period of time has + passed from the start of the strobe.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_INTENSITY</constant></entry> + <entry>integer</entry> + </row> + <row> + <entry spanname="descr">Intensity of the flash strobe when + the flash LED is in flash mode + (V4L2_FLASH_LED_MODE_FLASH). The unit should be milliamps + (mA) if possible.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_TORCH_INTENSITY</constant></entry> + <entry>integer</entry> + </row> + <row> + <entry spanname="descr">Intensity of the flash LED in + torch mode (V4L2_FLASH_LED_MODE_TORCH). The unit should be + milliamps (mA) if possible. Setting this control may not + be possible in presence of some faults. See + V4L2_CID_FLASH_FAULT.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_INDICATOR_INTENSITY</constant></entry> + <entry>integer</entry> + </row> + <row> + <entry spanname="descr">Intensity of the indicator LED. + The indicator LED may be fully independent of the flash + LED. The unit should be microamps (uA) if possible.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_FAULT</constant></entry> + <entry>bitmask</entry> + </row> + <row> + <entry spanname="descr">Faults related to the flash. The + faults tell about specific problems in the flash chip + itself or the LEDs attached to it. Faults may prevent + further use of some of the flash controls. In particular, + V4L2_CID_FLASH_LED_MODE is set to V4L2_FLASH_LED_MODE_NONE + if the fault affects the flash LED. Exactly which faults + have such an effect is chip dependent. Reading the faults + resets the control and returns the chip to a usable state + if possible.</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_FLASH_FAULT_OVER_VOLTAGE</constant></entry> + <entry>Flash controller voltage to the flash LED + has exceeded the limit specific to the flash + controller.</entry> + </row> + <row> + <entry><constant>V4L2_FLASH_FAULT_TIMEOUT</constant></entry> + <entry>The flash strobe was still on when + the timeout set by the user --- + V4L2_CID_FLASH_TIMEOUT control --- has expired. + Not all flash controllers may set this in all + such conditions.</entry> + </row> + <row> + <entry><constant>V4L2_FLASH_FAULT_OVER_TEMPERATURE</constant></entry> + <entry>The flash controller has overheated.</entry> + </row> + <row> + <entry><constant>V4L2_FLASH_FAULT_SHORT_CIRCUIT</constant></entry> + <entry>The short circuit protection of the flash + controller has been triggered.</entry> + </row> + </tbody> + </entrytbl> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_CHARGE</constant></entry> + <entry>boolean</entry> + </row> + <row><entry spanname="descr">Enable or disable charging of the xenon + flash capacitor.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_FLASH_READY</constant></entry> + <entry>boolean</entry> + </row> + <row> + <entry spanname="descr">Is the flash ready to strobe? + Xenon flashes require their capacitors charged before + strobing. LED flashes often require a cooldown period + after strobe during which another strobe will not be + possible. This is a read-only control.</entry> + </row> + <row><entry></entry></row> + </tbody> + </tgroup> + </table> + + </section> </section> <!-- diff --git a/Documentation/DocBook/v4l/crop.pdf b/Documentation/DocBook/media/v4l/crop.pdf Binary files differindex c9fb81c..c9fb81c 100644 --- a/Documentation/DocBook/v4l/crop.pdf +++ b/Documentation/DocBook/media/v4l/crop.pdf diff --git a/Documentation/DocBook/v4l/dev-capture.xml b/Documentation/DocBook/media/v4l/dev-capture.xml index 2237c66..2237c66 100644 --- a/Documentation/DocBook/v4l/dev-capture.xml +++ b/Documentation/DocBook/media/v4l/dev-capture.xml diff --git a/Documentation/DocBook/v4l/dev-codec.xml b/Documentation/DocBook/media/v4l/dev-codec.xml index 6e156dc..6e156dc 100644 --- a/Documentation/DocBook/v4l/dev-codec.xml +++ b/Documentation/DocBook/media/v4l/dev-codec.xml diff --git a/Documentation/DocBook/v4l/dev-effect.xml b/Documentation/DocBook/media/v4l/dev-effect.xml index 9c243be..9c243be 100644 --- a/Documentation/DocBook/v4l/dev-effect.xml +++ b/Documentation/DocBook/media/v4l/dev-effect.xml diff --git a/Documentation/DocBook/media/v4l/dev-event.xml b/Documentation/DocBook/media/v4l/dev-event.xml new file mode 100644 index 0000000..f14ae3f --- /dev/null +++ b/Documentation/DocBook/media/v4l/dev-event.xml @@ -0,0 +1,51 @@ + <title>Event Interface</title> + + <para>The V4L2 event interface provides a means for a user to get + immediately notified on certain conditions taking place on a device. + This might include start of frame or loss of signal events, for + example. Changes in the value or state of a V4L2 control can also be + reported through events. + </para> + + <para>To receive events, the events the user is interested in first must + be subscribed using the &VIDIOC-SUBSCRIBE-EVENT; ioctl. Once an event is + subscribed, the events of subscribed types are dequeueable using the + &VIDIOC-DQEVENT; ioctl. Events may be unsubscribed using + VIDIOC_UNSUBSCRIBE_EVENT ioctl. The special event type V4L2_EVENT_ALL may + be used to unsubscribe all the events the driver supports.</para> + + <para>The event subscriptions and event queues are specific to file + handles. Subscribing an event on one file handle does not affect + other file handles.</para> + + <para>The information on dequeueable events is obtained by using select or + poll system calls on video devices. The V4L2 events use POLLPRI events on + poll system call and exceptions on select system call.</para> + + <para>Starting with kernel 3.1 certain guarantees can be given with + regards to events:<orderedlist> + <listitem> + <para>Each subscribed event has its own internal dedicated event queue. +This means that flooding of one event type will not interfere with other +event types.</para> + </listitem> + <listitem> + <para>If the internal event queue for a particular subscribed event +becomes full, then the oldest event in that queue will be dropped.</para> + </listitem> + <listitem> + <para>Where applicable, certain event types can ensure that the payload +of the oldest event that is about to be dropped will be merged with the payload +of the next oldest event. Thus ensuring that no information is lost, but only an +intermediate step leading up to that information. See the documentation for the +event you want to subscribe to whether this is applicable for that event or not.</para> + </listitem> + </orderedlist></para> + + <!-- +Local Variables: +mode: sgml +sgml-parent-document: "v4l2.sgml" +indent-tabs-mode: nil +End: + --> diff --git a/Documentation/DocBook/v4l/dev-osd.xml b/Documentation/DocBook/media/v4l/dev-osd.xml index c9a68a2..c9a68a2 100644 --- a/Documentation/DocBook/v4l/dev-osd.xml +++ b/Documentation/DocBook/media/v4l/dev-osd.xml diff --git a/Documentation/DocBook/v4l/dev-output.xml b/Documentation/DocBook/media/v4l/dev-output.xml index 919e22c..919e22c 100644 --- a/Documentation/DocBook/v4l/dev-output.xml +++ b/Documentation/DocBook/media/v4l/dev-output.xml diff --git a/Documentation/DocBook/v4l/dev-overlay.xml b/Documentation/DocBook/media/v4l/dev-overlay.xml index 92513cf..92513cf 100644 --- a/Documentation/DocBook/v4l/dev-overlay.xml +++ b/Documentation/DocBook/media/v4l/dev-overlay.xml diff --git a/Documentation/DocBook/v4l/dev-radio.xml b/Documentation/DocBook/media/v4l/dev-radio.xml index 73aa90b..73aa90b 100644 --- a/Documentation/DocBook/v4l/dev-radio.xml +++ b/Documentation/DocBook/media/v4l/dev-radio.xml diff --git a/Documentation/DocBook/v4l/dev-raw-vbi.xml b/Documentation/DocBook/media/v4l/dev-raw-vbi.xml index c5a70bd..c5a70bd 100644 --- a/Documentation/DocBook/v4l/dev-raw-vbi.xml +++ b/Documentation/DocBook/media/v4l/dev-raw-vbi.xml diff --git a/Documentation/DocBook/v4l/dev-rds.xml b/Documentation/DocBook/media/v4l/dev-rds.xml index 2427f54..2427f54 100644 --- a/Documentation/DocBook/v4l/dev-rds.xml +++ b/Documentation/DocBook/media/v4l/dev-rds.xml diff --git a/Documentation/DocBook/v4l/dev-sliced-vbi.xml b/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml index 69e789f..69e789f 100644 --- a/Documentation/DocBook/v4l/dev-sliced-vbi.xml +++ b/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml diff --git a/Documentation/DocBook/v4l/dev-subdev.xml b/Documentation/DocBook/media/v4l/dev-subdev.xml index 05c8fef..0916a73 100644 --- a/Documentation/DocBook/v4l/dev-subdev.xml +++ b/Documentation/DocBook/media/v4l/dev-subdev.xml @@ -266,7 +266,7 @@ <para>When satisfied with the try results, applications can set the active formats by setting the <structfield>which</structfield> argument to - <constant>V4L2_SUBDEV_FORMAT_TRY</constant>. Active formats are changed + <constant>V4L2_SUBDEV_FORMAT_ACTIVE</constant>. Active formats are changed exactly as try formats by drivers. To avoid modifying the hardware state during format negotiation, applications should negotiate try formats first and then modify the active settings using the try formats returned during diff --git a/Documentation/DocBook/v4l/dev-teletext.xml b/Documentation/DocBook/media/v4l/dev-teletext.xml index 414b1cf..414b1cf 100644 --- a/Documentation/DocBook/v4l/dev-teletext.xml +++ b/Documentation/DocBook/media/v4l/dev-teletext.xml diff --git a/Documentation/DocBook/v4l/driver.xml b/Documentation/DocBook/media/v4l/driver.xml index 1f7eea5..1f7eea5 100644 --- a/Documentation/DocBook/v4l/driver.xml +++ b/Documentation/DocBook/media/v4l/driver.xml diff --git a/Documentation/DocBook/v4l/fdl-appendix.xml b/Documentation/DocBook/media/v4l/fdl-appendix.xml index ae22394..ae22394 100644 --- a/Documentation/DocBook/v4l/fdl-appendix.xml +++ b/Documentation/DocBook/media/v4l/fdl-appendix.xml diff --git a/Documentation/DocBook/v4l/fieldseq_bt.pdf b/Documentation/DocBook/media/v4l/fieldseq_bt.pdf Binary files differindex 26598b2..26598b2 100644 --- a/Documentation/DocBook/v4l/fieldseq_bt.pdf +++ b/Documentation/DocBook/media/v4l/fieldseq_bt.pdf diff --git a/Documentation/DocBook/v4l/fieldseq_tb.pdf b/Documentation/DocBook/media/v4l/fieldseq_tb.pdf Binary files differindex 4965b22..4965b22 100644 --- a/Documentation/DocBook/v4l/fieldseq_tb.pdf +++ b/Documentation/DocBook/media/v4l/fieldseq_tb.pdf diff --git a/Documentation/DocBook/v4l/func-close.xml b/Documentation/DocBook/media/v4l/func-close.xml index dfb41cb..dfb41cb 100644 --- a/Documentation/DocBook/v4l/func-close.xml +++ b/Documentation/DocBook/media/v4l/func-close.xml diff --git a/Documentation/DocBook/media/v4l/func-ioctl.xml b/Documentation/DocBook/media/v4l/func-ioctl.xml new file mode 100644 index 0000000..2de64be --- /dev/null +++ b/Documentation/DocBook/media/v4l/func-ioctl.xml @@ -0,0 +1,79 @@ +<refentry id="func-ioctl"> + <refmeta> + <refentrytitle>V4L2 ioctl()</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>v4l2-ioctl</refname> + <refpurpose>Program a V4L2 device</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcsynopsisinfo>#include <sys/ioctl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>ioctl</function></funcdef> + <paramdef>int <parameter>fd</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>void *<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>&fd;</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>V4L2 ioctl request code as defined in the <filename>videodev2.h</filename> header file, for example +VIDIOC_QUERYCAP.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para>Pointer to a function parameter, usually a structure.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + + <para>The <function>ioctl()</function> function is used to program +V4L2 devices. The argument <parameter>fd</parameter> must be an open +file descriptor. An ioctl <parameter>request</parameter> has encoded +in it whether the argument is an input, output or read/write +parameter, and the size of the argument <parameter>argp</parameter> in +bytes. Macros and defines specifying V4L2 ioctl requests are located +in the <filename>videodev2.h</filename> header file. +Applications should use their own copy, not include the version in the +kernel sources on the system they compile on. All V4L2 ioctl requests, +their respective function and parameters are specified in <xref + linkend="user-func" />.</para> + </refsect1> + + <refsect1> + &return-value; + <para>When an ioctl that takes an output or read/write parameter fails, + the parameter remains unmodified.</para> + </refsect1> +</refentry> + +<!-- +Local Variables: +mode: sgml +sgml-parent-document: "v4l2.sgml" +indent-tabs-mode: nil +End: +--> diff --git a/Documentation/DocBook/v4l/func-mmap.xml b/Documentation/DocBook/media/v4l/func-mmap.xml index 786732b..786732b 100644 --- a/Documentation/DocBook/v4l/func-mmap.xml +++ b/Documentation/DocBook/media/v4l/func-mmap.xml diff --git a/Documentation/DocBook/v4l/func-munmap.xml b/Documentation/DocBook/media/v4l/func-munmap.xml index e2c4190..e2c4190 100644 --- a/Documentation/DocBook/v4l/func-munmap.xml +++ b/Documentation/DocBook/media/v4l/func-munmap.xml diff --git a/Documentation/DocBook/v4l/func-open.xml b/Documentation/DocBook/media/v4l/func-open.xml index 7595d07..7595d07 100644 --- a/Documentation/DocBook/v4l/func-open.xml +++ b/Documentation/DocBook/media/v4l/func-open.xml diff --git a/Documentation/DocBook/v4l/func-poll.xml b/Documentation/DocBook/media/v4l/func-poll.xml index ec3c718..ec3c718 100644 --- a/Documentation/DocBook/v4l/func-poll.xml +++ b/Documentation/DocBook/media/v4l/func-poll.xml diff --git a/Documentation/DocBook/v4l/func-read.xml b/Documentation/DocBook/media/v4l/func-read.xml index a5089bf..a5089bf 100644 --- a/Documentation/DocBook/v4l/func-read.xml +++ b/Documentation/DocBook/media/v4l/func-read.xml diff --git a/Documentation/DocBook/v4l/func-select.xml b/Documentation/DocBook/media/v4l/func-select.xml index b671362..b671362 100644 --- a/Documentation/DocBook/v4l/func-select.xml +++ b/Documentation/DocBook/media/v4l/func-select.xml diff --git a/Documentation/DocBook/v4l/func-write.xml b/Documentation/DocBook/media/v4l/func-write.xml index 2c09c09..2c09c09 100644 --- a/Documentation/DocBook/v4l/func-write.xml +++ b/Documentation/DocBook/media/v4l/func-write.xml diff --git a/Documentation/DocBook/media/v4l/gen-errors.xml b/Documentation/DocBook/media/v4l/gen-errors.xml new file mode 100644 index 0000000..5bbf3ce --- /dev/null +++ b/Documentation/DocBook/media/v4l/gen-errors.xml @@ -0,0 +1,78 @@ +<title>Generic Error Codes</title> + +<table frame="none" pgwide="1" id="gen-errors"> + <title>Generic error codes</title> + <tgroup cols="2"> + &cs-str; + <tbody valign="top"> + <!-- Keep it ordered alphabetically --> + <row> + <entry>EBADF</entry> + <entry>The file descriptor is not a valid.</entry> + </row> + <row> + <entry>EBUSY</entry> + <entry>The ioctl can't be handled because the device is busy. This is + typically return while device is streaming, and an ioctl tried to + change something that would affect the stream, or would require the + usage of a hardware resource that was already allocated. The ioctl + must not be retried without performing another action to fix the + problem first (typically: stop the stream before retrying).</entry> + </row> + <row> + <entry>EFAULT</entry> + <entry>There was a failure while copying data from/to userspace, + probably caused by an invalid pointer reference.</entry> + </row> + <row> + <entry>EINVAL</entry> + <entry>One or more of the ioctl parameters are invalid or out of the + allowed range. This is a widely used error code. See the individual + ioctl requests for specific causes.</entry> + </row> + <row> + <entry>ENODEV</entry> + <entry>Device not found or was removed.</entry> + </row> + <row> + <entry>ENOMEM</entry> + <entry>There's not enough memory to handle the desired operation.</entry> + </row> + <row> + <entry>ENOTTY</entry> + <entry>The ioctl is not supported by the driver, actually meaning that + the required functionality is not available, or the file + descriptor is not for a media device.</entry> + </row> + <row> + <entry>ENOSPC</entry> + <entry>On USB devices, the stream ioctl's can return this error, meaning + that this request would overcommit the usb bandwidth reserved + for periodic transfers (up to 80% of the USB bandwidth).</entry> + </row> + <row> + <entry>ENOSYS or EOPNOTSUPP</entry> + <entry>Function not available for this device (dvb API only. Will likely + be replaced anytime soon by ENOTTY).</entry> + </row> + <row> + <entry>EPERM</entry> + <entry>Permission denied. Can be returned if the device needs write + permission, or some special capabilities is needed + (e. g. root)</entry> + </row> + <row> + <entry>EWOULDBLOCK</entry> + <entry>Operation would block. Used when the ioctl would need to wait + for an event, but the device was opened in non-blocking mode.</entry> + </row> + </tbody> + </tgroup> +</table> + +<para>Note 1: ioctls may return other error codes. Since errors may have side +effects such as a driver reset, applications should abort on unexpected errors. +</para> + +<para>Note 2: Request-specific error codes are listed in the individual +requests descriptions.</para> diff --git a/Documentation/DocBook/v4l/io.xml b/Documentation/DocBook/media/v4l/io.xml index 227e7ac..3f47df1 100644 --- a/Documentation/DocBook/v4l/io.xml +++ b/Documentation/DocBook/media/v4l/io.xml @@ -210,7 +210,7 @@ for (i = 0; i < reqbuf.count; i++) <programlisting> &v4l2-requestbuffers; reqbuf; /* Our current format uses 3 planes per buffer */ -#define FMT_NUM_PLANES = 3; +#define FMT_NUM_PLANES = 3 struct { void *start[FMT_NUM_PLANES]; @@ -927,6 +927,33 @@ ioctl is called.</entry> Applications set or clear this flag before calling the <constant>VIDIOC_QBUF</constant> ioctl.</entry> </row> + <row> + <entry><constant>V4L2_BUF_FLAG_PREPARED</constant></entry> + <entry>0x0400</entry> + <entry>The buffer has been prepared for I/O and can be queued by the +application. Drivers set or clear this flag when the +<link linkend="vidioc-querybuf">VIDIOC_QUERYBUF</link>, <link + linkend="vidioc-qbuf">VIDIOC_PREPARE_BUF</link>, <link + linkend="vidioc-qbuf">VIDIOC_QBUF</link> or <link + linkend="vidioc-qbuf">VIDIOC_DQBUF</link> ioctl is called.</entry> + </row> + <row> + <entry><constant>V4L2_BUF_FLAG_NO_CACHE_INVALIDATE</constant></entry> + <entry>0x0400</entry> + <entry>Caches do not have to be invalidated for this buffer. +Typically applications shall use this flag if the data captured in the buffer +is not going to be touched by the CPU, instead the buffer will, probably, be +passed on to a DMA-capable hardware unit for further processing or output. +</entry> + </row> + <row> + <entry><constant>V4L2_BUF_FLAG_NO_CACHE_CLEAN</constant></entry> + <entry>0x0800</entry> + <entry>Caches do not have to be cleaned for this buffer. +Typically applications shall use this flag for output buffers if the data +in this buffer has not been created by the CPU but by some DMA-capable unit, +in which case caches have not been used.</entry> + </row> </tbody> </tgroup> </table> diff --git a/Documentation/DocBook/v4l/keytable.c.xml b/Documentation/DocBook/media/v4l/keytable.c.xml index d53254a..d53254a 100644 --- a/Documentation/DocBook/v4l/keytable.c.xml +++ b/Documentation/DocBook/media/v4l/keytable.c.xml diff --git a/Documentation/DocBook/v4l/libv4l.xml b/Documentation/DocBook/media/v4l/libv4l.xml index 3cb10ec..3cb10ec 100644 --- a/Documentation/DocBook/v4l/libv4l.xml +++ b/Documentation/DocBook/media/v4l/libv4l.xml diff --git a/Documentation/DocBook/v4l/lirc_device_interface.xml b/Documentation/DocBook/media/v4l/lirc_device_interface.xml index 0e0453f..8d7eb6b 100644 --- a/Documentation/DocBook/v4l/lirc_device_interface.xml +++ b/Documentation/DocBook/media/v4l/lirc_device_interface.xml @@ -246,6 +246,8 @@ on working with the default settings initially.</para> </listitem> </varlistentry> </variablelist> - +<section id="lirc_dev_errors"> + &return-value; +</section> </section> </section> diff --git a/Documentation/DocBook/v4l/media-controller.xml b/Documentation/DocBook/media/v4l/media-controller.xml index 873ac3a..873ac3a 100644 --- a/Documentation/DocBook/v4l/media-controller.xml +++ b/Documentation/DocBook/media/v4l/media-controller.xml diff --git a/Documentation/DocBook/v4l/media-func-close.xml b/Documentation/DocBook/media/v4l/media-func-close.xml index be149c8..be149c8 100644 --- a/Documentation/DocBook/v4l/media-func-close.xml +++ b/Documentation/DocBook/media/v4l/media-func-close.xml diff --git a/Documentation/DocBook/v4l/media-func-ioctl.xml b/Documentation/DocBook/media/v4l/media-func-ioctl.xml index bda8604..39478d0 100644 --- a/Documentation/DocBook/v4l/media-func-ioctl.xml +++ b/Documentation/DocBook/media/v4l/media-func-ioctl.xml @@ -63,54 +63,11 @@ </refsect1> <refsect1> - <title>Return Value</title> + &return-value; - <para><function>ioctl()</function> returns <returnvalue>0</returnvalue> on - success. On failure, <returnvalue>-1</returnvalue> is returned, and the - <varname>errno</varname> variable is set appropriately. Generic error codes - are listed below, and request-specific error codes are listed in the + <para>Request-specific error codes are listed in the individual requests descriptions.</para> <para>When an ioctl that takes an output or read/write parameter fails, the parameter remains unmodified.</para> - - <variablelist> - <varlistentry> - <term><errorcode>EBADF</errorcode></term> - <listitem> - <para><parameter>fd</parameter> is not a valid open file descriptor. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EFAULT</errorcode></term> - <listitem> - <para><parameter>argp</parameter> references an inaccessible memory - area.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>The <parameter>request</parameter> or the data pointed to by - <parameter>argp</parameter> is not valid. This is a very common error - code, see the individual ioctl requests listed in - <xref linkend="media-user-func" /> for actual causes.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>ENOMEM</errorcode></term> - <listitem> - <para>Insufficient kernel memory was available to complete the - request.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>ENOTTY</errorcode></term> - <listitem> - <para><parameter>fd</parameter> is not associated with a character - special device.</para> - </listitem> - </varlistentry> - </variablelist> </refsect1> </refentry> diff --git a/Documentation/DocBook/v4l/media-func-open.xml b/Documentation/DocBook/media/v4l/media-func-open.xml index f7df034..f7df034 100644 --- a/Documentation/DocBook/v4l/media-func-open.xml +++ b/Documentation/DocBook/media/v4l/media-func-open.xml diff --git a/Documentation/DocBook/v4l/media-ioc-device-info.xml b/Documentation/DocBook/media/v4l/media-ioc-device-info.xml index 1f32373..2ce5214 100644 --- a/Documentation/DocBook/v4l/media-ioc-device-info.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-device-info.xml @@ -127,7 +127,6 @@ </refsect1> <refsect1> - <title>Return value</title> - <para>This function doesn't return specific error codes.</para> + &return-value; </refsect1> </refentry> diff --git a/Documentation/DocBook/v4l/media-ioc-enum-entities.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml index 576b68b..576b68b 100644 --- a/Documentation/DocBook/v4l/media-ioc-enum-entities.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml diff --git a/Documentation/DocBook/v4l/media-ioc-enum-links.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml index d2fc73e..355df43 100644 --- a/Documentation/DocBook/v4l/media-ioc-enum-links.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml @@ -139,7 +139,7 @@ </table> <table pgwide="1" frame="none" id="media-link-desc"> - <title>struct <structname>media_links_desc</structname></title> + <title>struct <structname>media_link_desc</structname></title> <tgroup cols="3"> &cs-str; <tbody valign="top"> diff --git a/Documentation/DocBook/v4l/media-ioc-setup-link.xml b/Documentation/DocBook/media/v4l/media-ioc-setup-link.xml index cec97af..fc2e522 100644 --- a/Documentation/DocBook/v4l/media-ioc-setup-link.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-setup-link.xml @@ -72,15 +72,6 @@ <variablelist> <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>The link properties can't be changed because the link is - currently busy. This can be caused, for instance, by an active media - stream (audio or video) on the link. The ioctl shouldn't be retried if - no other action is performed before to fix the problem.</para> - </listitem> - </varlistentry> - <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> <para>The &media-link-desc; references a non-existing link, or the diff --git a/Documentation/DocBook/v4l/pipeline.pdf b/Documentation/DocBook/media/v4l/pipeline.pdf Binary files differindex ee3e37f..ee3e37f 100644 --- a/Documentation/DocBook/v4l/pipeline.pdf +++ b/Documentation/DocBook/media/v4l/pipeline.pdf diff --git a/Documentation/DocBook/v4l/pixfmt-grey.xml b/Documentation/DocBook/media/v4l/pixfmt-grey.xml index 3b72bc6..3b72bc6 100644 --- a/Documentation/DocBook/v4l/pixfmt-grey.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-grey.xml diff --git a/Documentation/DocBook/v4l/pixfmt-m420.xml b/Documentation/DocBook/media/v4l/pixfmt-m420.xml index ce4bc01..ce4bc01 100644 --- a/Documentation/DocBook/v4l/pixfmt-m420.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-m420.xml diff --git a/Documentation/DocBook/v4l/pixfmt-nv12.xml b/Documentation/DocBook/media/v4l/pixfmt-nv12.xml index 873f670..873f670 100644 --- a/Documentation/DocBook/v4l/pixfmt-nv12.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-nv12.xml diff --git a/Documentation/DocBook/v4l/pixfmt-nv12m.xml b/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml index c9e166d..c9e166d 100644 --- a/Documentation/DocBook/v4l/pixfmt-nv12m.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml diff --git a/Documentation/DocBook/v4l/pixfmt-nv12mt.xml b/Documentation/DocBook/media/v4l/pixfmt-nv12mt.xml index 7a2855a..7a2855a 100644 --- a/Documentation/DocBook/v4l/pixfmt-nv12mt.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-nv12mt.xml diff --git a/Documentation/DocBook/v4l/pixfmt-nv16.xml b/Documentation/DocBook/media/v4l/pixfmt-nv16.xml index 2609403..2609403 100644 --- a/Documentation/DocBook/v4l/pixfmt-nv16.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-nv16.xml diff --git a/Documentation/DocBook/v4l/pixfmt-packed-rgb.xml b/Documentation/DocBook/media/v4l/pixfmt-packed-rgb.xml index 4db272b..4db272b 100644 --- a/Documentation/DocBook/v4l/pixfmt-packed-rgb.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-packed-rgb.xml diff --git a/Documentation/DocBook/v4l/pixfmt-packed-yuv.xml b/Documentation/DocBook/media/v4l/pixfmt-packed-yuv.xml index 3cab5d0..3cab5d0 100644 --- a/Documentation/DocBook/v4l/pixfmt-packed-yuv.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-packed-yuv.xml diff --git a/Documentation/DocBook/v4l/pixfmt-sbggr16.xml b/Documentation/DocBook/media/v4l/pixfmt-sbggr16.xml index 519a9ef..519a9ef 100644 --- a/Documentation/DocBook/v4l/pixfmt-sbggr16.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-sbggr16.xml diff --git a/Documentation/DocBook/v4l/pixfmt-sbggr8.xml b/Documentation/DocBook/media/v4l/pixfmt-sbggr8.xml index 5fe84ec..5fe84ec 100644 --- a/Documentation/DocBook/v4l/pixfmt-sbggr8.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-sbggr8.xml diff --git a/Documentation/DocBook/v4l/pixfmt-sgbrg8.xml b/Documentation/DocBook/media/v4l/pixfmt-sgbrg8.xml index d67a472..d67a472 100644 --- a/Documentation/DocBook/v4l/pixfmt-sgbrg8.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-sgbrg8.xml diff --git a/Documentation/DocBook/v4l/pixfmt-sgrbg8.xml b/Documentation/DocBook/media/v4l/pixfmt-sgrbg8.xml index 0cdf13b..0cdf13b 100644 --- a/Documentation/DocBook/v4l/pixfmt-sgrbg8.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-sgrbg8.xml diff --git a/Documentation/DocBook/v4l/pixfmt-srggb10.xml b/Documentation/DocBook/media/v4l/pixfmt-srggb10.xml index 7b27409..7b27409 100644 --- a/Documentation/DocBook/v4l/pixfmt-srggb10.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-srggb10.xml diff --git a/Documentation/DocBook/v4l/pixfmt-srggb12.xml b/Documentation/DocBook/media/v4l/pixfmt-srggb12.xml index 9ba4fb6..9ba4fb6 100644 --- a/Documentation/DocBook/v4l/pixfmt-srggb12.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-srggb12.xml diff --git a/Documentation/DocBook/v4l/pixfmt-srggb8.xml b/Documentation/DocBook/media/v4l/pixfmt-srggb8.xml index 2570e3b..2570e3b 100644 --- a/Documentation/DocBook/v4l/pixfmt-srggb8.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-srggb8.xml diff --git a/Documentation/DocBook/v4l/pixfmt-uyvy.xml b/Documentation/DocBook/media/v4l/pixfmt-uyvy.xml index 816c8d4..816c8d4 100644 --- a/Documentation/DocBook/v4l/pixfmt-uyvy.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-uyvy.xml diff --git a/Documentation/DocBook/v4l/pixfmt-vyuy.xml b/Documentation/DocBook/media/v4l/pixfmt-vyuy.xml index 61f12a5..61f12a5 100644 --- a/Documentation/DocBook/v4l/pixfmt-vyuy.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-vyuy.xml diff --git a/Documentation/DocBook/v4l/pixfmt-y10.xml b/Documentation/DocBook/media/v4l/pixfmt-y10.xml index d065043..d065043 100644 --- a/Documentation/DocBook/v4l/pixfmt-y10.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-y10.xml diff --git a/Documentation/DocBook/v4l/pixfmt-y10b.xml b/Documentation/DocBook/media/v4l/pixfmt-y10b.xml index adb0ad8..adb0ad8 100644 --- a/Documentation/DocBook/v4l/pixfmt-y10b.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-y10b.xml diff --git a/Documentation/DocBook/v4l/pixfmt-y12.xml b/Documentation/DocBook/media/v4l/pixfmt-y12.xml index ff417b8..ff417b8 100644 --- a/Documentation/DocBook/v4l/pixfmt-y12.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-y12.xml diff --git a/Documentation/DocBook/v4l/pixfmt-y16.xml b/Documentation/DocBook/media/v4l/pixfmt-y16.xml index d584040..d584040 100644 --- a/Documentation/DocBook/v4l/pixfmt-y16.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-y16.xml diff --git a/Documentation/DocBook/v4l/pixfmt-y41p.xml b/Documentation/DocBook/media/v4l/pixfmt-y41p.xml index 73c8536..73c8536 100644 --- a/Documentation/DocBook/v4l/pixfmt-y41p.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-y41p.xml diff --git a/Documentation/DocBook/v4l/pixfmt-yuv410.xml b/Documentation/DocBook/media/v4l/pixfmt-yuv410.xml index 8eb4a19..8eb4a19 100644 --- a/Documentation/DocBook/v4l/pixfmt-yuv410.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-yuv410.xml diff --git a/Documentation/DocBook/v4l/pixfmt-yuv411p.xml b/Documentation/DocBook/media/v4l/pixfmt-yuv411p.xml index 00e0960..00e0960 100644 --- a/Documentation/DocBook/v4l/pixfmt-yuv411p.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-yuv411p.xml diff --git a/Documentation/DocBook/v4l/pixfmt-yuv420.xml b/Documentation/DocBook/media/v4l/pixfmt-yuv420.xml index 42d7de5..42d7de5 100644 --- a/Documentation/DocBook/v4l/pixfmt-yuv420.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-yuv420.xml diff --git a/Documentation/DocBook/v4l/pixfmt-yuv420m.xml b/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml index f5d8f57..f5d8f57 100644 --- a/Documentation/DocBook/v4l/pixfmt-yuv420m.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml diff --git a/Documentation/DocBook/v4l/pixfmt-yuv422p.xml b/Documentation/DocBook/media/v4l/pixfmt-yuv422p.xml index 4348bd9..4348bd9 100644 --- a/Documentation/DocBook/v4l/pixfmt-yuv422p.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-yuv422p.xml diff --git a/Documentation/DocBook/v4l/pixfmt-yuyv.xml b/Documentation/DocBook/media/v4l/pixfmt-yuyv.xml index bdb2ffa..bdb2ffa 100644 --- a/Documentation/DocBook/v4l/pixfmt-yuyv.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-yuyv.xml diff --git a/Documentation/DocBook/v4l/pixfmt-yvyu.xml b/Documentation/DocBook/media/v4l/pixfmt-yvyu.xml index 40d17ae..40d17ae 100644 --- a/Documentation/DocBook/v4l/pixfmt-yvyu.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-yvyu.xml diff --git a/Documentation/DocBook/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml index deb6602..2ff6b77 100644 --- a/Documentation/DocBook/v4l/pixfmt.xml +++ b/Documentation/DocBook/media/v4l/pixfmt.xml @@ -121,7 +121,7 @@ set this field to zero.</entry> an array of <structname>v4l2_plane_pix_format</structname> structures, describing all planes of that format.</para> <table pgwide="1" frame="none" id="v4l2-plane-pix-format"> - <title>struct <structname>vl42_plane_pix_format</structname></title> + <title>struct <structname>v4l2_plane_pix_format</structname></title> <tgroup cols="3"> &cs-str; <tbody valign="top"> @@ -741,10 +741,55 @@ information.</para> <row id="V4L2-PIX-FMT-MPEG"> <entry><constant>V4L2_PIX_FMT_MPEG</constant></entry> <entry>'MPEG'</entry> - <entry>MPEG stream. The actual format is determined by + <entry>MPEG multiplexed stream. The actual format is determined by extended control <constant>V4L2_CID_MPEG_STREAM_TYPE</constant>, see <xref linkend="mpeg-control-id" />.</entry> </row> + <row id="V4L2-PIX-FMT-H264"> + <entry><constant>V4L2_PIX_FMT_H264</constant></entry> + <entry>'H264'</entry> + <entry>H264 video elementary stream with start codes.</entry> + </row> + <row id="V4L2-PIX-FMT-H264-NO-SC"> + <entry><constant>V4L2_PIX_FMT_H264_NO_SC</constant></entry> + <entry>'AVC1'</entry> + <entry>H264 video elementary stream without start codes.</entry> + </row> + <row id="V4L2-PIX-FMT-H263"> + <entry><constant>V4L2_PIX_FMT_H263</constant></entry> + <entry>'H263'</entry> + <entry>H263 video elementary stream.</entry> + </row> + <row id="V4L2-PIX-FMT-MPEG1"> + <entry><constant>V4L2_PIX_FMT_MPEG1</constant></entry> + <entry>'MPG1'</entry> + <entry>MPEG1 video elementary stream.</entry> + </row> + <row id="V4L2-PIX-FMT-MPEG2"> + <entry><constant>V4L2_PIX_FMT_MPEG2</constant></entry> + <entry>'MPG2'</entry> + <entry>MPEG2 video elementary stream.</entry> + </row> + <row id="V4L2-PIX-FMT-MPEG4"> + <entry><constant>V4L2_PIX_FMT_MPEG4</constant></entry> + <entry>'MPG4'</entry> + <entry>MPEG4 video elementary stream.</entry> + </row> + <row id="V4L2-PIX-FMT-XVID"> + <entry><constant>V4L2_PIX_FMT_XVID</constant></entry> + <entry>'XVID'</entry> + <entry>Xvid video elementary stream.</entry> + </row> + <row id="V4L2-PIX-FMT-VC1-ANNEX-G"> + <entry><constant>V4L2_PIX_FMT_VC1_ANNEX_G</constant></entry> + <entry>'VC1G'</entry> + <entry>VC1, SMPTE 421M Annex G compliant stream.</entry> + </row> + <row id="V4L2-PIX-FMT-VC1-ANNEX-L"> + <entry><constant>V4L2_PIX_FMT_VC1_ANNEX_L</constant></entry> + <entry>'VC1L'</entry> + <entry>VC1, SMPTE 421M Annex L compliant stream.</entry> + </row> </tbody> </tgroup> </table> @@ -804,6 +849,12 @@ kernel sources in the file <filename>Documentation/video4linux/cx2341x/README.hm <entry>'CPIA'</entry> <entry>YUV format used by the gspca cpia1 driver.</entry> </row> + <row id="V4L2-PIX-FMT-JPGL"> + <entry><constant>V4L2_PIX_FMT_JPGL</constant></entry> + <entry>'JPGL'</entry> + <entry>JPEG-Light format (Pegasus Lossless JPEG) + used in Divio webcams NW 80x.</entry> + </row> <row id="V4L2-PIX-FMT-SPCA501"> <entry><constant>V4L2_PIX_FMT_SPCA501</constant></entry> <entry>'S501'</entry> @@ -854,6 +905,11 @@ kernel sources in the file <filename>Documentation/video4linux/cx2341x/README.hm <entry>'PJPG'</entry> <entry>Pixart 73xx JPEG format used by the gspca driver.</entry> </row> + <row id="V4L2-PIX-FMT-SE401"> + <entry><constant>V4L2_PIX_FMT_SE401</constant></entry> + <entry>'S401'</entry> + <entry>Compressed RGB format used by the gspca se401 driver</entry> + </row> <row id="V4L2-PIX-FMT-SQ905C"> <entry><constant>V4L2_PIX_FMT_SQ905C</constant></entry> <entry>'905C'</entry> diff --git a/Documentation/DocBook/v4l/planar-apis.xml b/Documentation/DocBook/media/v4l/planar-apis.xml index 878ce20..878ce20 100644 --- a/Documentation/DocBook/v4l/planar-apis.xml +++ b/Documentation/DocBook/media/v4l/planar-apis.xml diff --git a/Documentation/DocBook/v4l/remote_controllers.xml b/Documentation/DocBook/media/v4l/remote_controllers.xml index 160e464..160e464 100644 --- a/Documentation/DocBook/v4l/remote_controllers.xml +++ b/Documentation/DocBook/media/v4l/remote_controllers.xml diff --git a/Documentation/DocBook/v4l/subdev-formats.xml b/Documentation/DocBook/media/v4l/subdev-formats.xml index 8d3409d..49c532e 100644 --- a/Documentation/DocBook/v4l/subdev-formats.xml +++ b/Documentation/DocBook/media/v4l/subdev-formats.xml @@ -380,9 +380,6 @@ <title>Bayer Patterns</title> <mediaobject> <imageobject> - <imagedata fileref="bayer.pdf" format="PS" /> - </imageobject> - <imageobject> <imagedata fileref="bayer.png" format="PNG" /> </imageobject> <textobject> @@ -2528,7 +2525,7 @@ <para>Those data formats consist of an ordered sequence of 8-bit bytes obtained from JPEG compression process. Additionally to the - <constant>_JPEG</constant> prefix the format code is made of + <constant>_JPEG</constant> postfix the format code is made of the following information. <itemizedlist> <listitem><para>The number of bus samples per entropy encoded byte.</para></listitem> diff --git a/Documentation/DocBook/v4l/v4l2.xml b/Documentation/DocBook/media/v4l/v4l2.xml index a7fd76d..2ab365c 100644 --- a/Documentation/DocBook/v4l/v4l2.xml +++ b/Documentation/DocBook/media/v4l/v4l2.xml @@ -87,7 +87,7 @@ Remote Controller chapter.</contrib> </author> <author> - <firstname>Pawel</firstname> + <firstname>Pawel</firstname> <surname>Osciak</surname> <contrib>Designed and documented the multi-planar API.</contrib> <affiliation> @@ -128,6 +128,22 @@ structs, ioctls) must be noted in more detail in the history chapter applications. --> <revision> + <revnumber>3.2</revnumber> + <date>2011-08-26</date> + <authorinitials>hv</authorinitials> + <revremark>Added V4L2_CTRL_FLAG_VOLATILE.</revremark> + </revision> + + <revision> + <revnumber>3.1</revnumber> + <date>2011-06-27</date> + <authorinitials>mcc, po, hv</authorinitials> + <revremark>Documented that VIDIOC_QUERYCAP now returns a per-subsystem version instead of a per-driver one. + Standardize an error code for invalid ioctl. + Added V4L2_CTRL_TYPE_BITMASK.</revremark> + </revision> + + <revision> <revnumber>2.6.39</revnumber> <date>2011-03-01</date> <authorinitials>mcc, po</authorinitials> @@ -401,7 +417,7 @@ and discussions on the V4L mailing list.</revremark> </partinfo> <title>Video for Linux Two API Specification</title> - <subtitle>Revision 2.6.39</subtitle> + <subtitle>Revision 3.2</subtitle> <chapter id="common"> &sub-common; @@ -453,6 +469,7 @@ and discussions on the V4L mailing list.</revremark> &sub-close; &sub-ioctl; <!-- All ioctls go here. --> + &sub-create-bufs; &sub-cropcap; &sub-dbg-g-chip-ident; &sub-dbg-g-register; @@ -495,6 +512,7 @@ and discussions on the V4L mailing list.</revremark> &sub-queryctrl; &sub-query-dv-preset; &sub-querystd; + &sub-prepare-buf; &sub-reqbufs; &sub-s-hw-freq-seek; &sub-streamon; diff --git a/Documentation/DocBook/v4l/v4l2grab.c.xml b/Documentation/DocBook/media/v4l/v4l2grab.c.xml index bed12e4..bed12e4 100644 --- a/Documentation/DocBook/v4l/v4l2grab.c.xml +++ b/Documentation/DocBook/media/v4l/v4l2grab.c.xml diff --git a/Documentation/DocBook/v4l/vbi_525.pdf b/Documentation/DocBook/media/v4l/vbi_525.pdf Binary files differindex 9e72c25..9e72c25 100644 --- a/Documentation/DocBook/v4l/vbi_525.pdf +++ b/Documentation/DocBook/media/v4l/vbi_525.pdf diff --git a/Documentation/DocBook/v4l/vbi_625.pdf b/Documentation/DocBook/media/v4l/vbi_625.pdf Binary files differindex 765235e..765235e 100644 --- a/Documentation/DocBook/v4l/vbi_625.pdf +++ b/Documentation/DocBook/media/v4l/vbi_625.pdf diff --git a/Documentation/DocBook/v4l/vbi_hsync.pdf b/Documentation/DocBook/media/v4l/vbi_hsync.pdf Binary files differindex 200b668..200b668 100644 --- a/Documentation/DocBook/v4l/vbi_hsync.pdf +++ b/Documentation/DocBook/media/v4l/vbi_hsync.pdf diff --git a/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml b/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml new file mode 100644 index 0000000..73ae8a6 --- /dev/null +++ b/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml @@ -0,0 +1,139 @@ +<refentry id="vidioc-create-bufs"> + <refmeta> + <refentrytitle>ioctl VIDIOC_CREATE_BUFS</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>VIDIOC_CREATE_BUFS</refname> + <refpurpose>Create buffers for Memory Mapped or User Pointer I/O</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcprototype> + <funcdef>int <function>ioctl</function></funcdef> + <paramdef>int <parameter>fd</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>struct v4l2_create_buffers *<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>&fd;</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>VIDIOC_CREATE_BUFS</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para></para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + + <para>This ioctl is used to create buffers for <link linkend="mmap">memory +mapped</link> or <link linkend="userp">user pointer</link> +I/O. It can be used as an alternative or in addition to the +<constant>VIDIOC_REQBUFS</constant> ioctl, when a tighter control over buffers +is required. This ioctl can be called multiple times to create buffers of +different sizes.</para> + + <para>To allocate device buffers applications initialize relevant fields of +the <structname>v4l2_create_buffers</structname> structure. They set the +<structfield>type</structfield> field in the +<structname>v4l2_format</structname> structure, embedded in this +structure, to the respective stream or buffer type. +<structfield>count</structfield> must be set to the number of required buffers. +<structfield>memory</structfield> specifies the required I/O method. The +<structfield>format</structfield> field shall typically be filled in using +either the <constant>VIDIOC_TRY_FMT</constant> or +<constant>VIDIOC_G_FMT</constant> ioctl(). Additionally, applications can adjust +<structfield>sizeimage</structfield> fields to fit their specific needs. The +<structfield>reserved</structfield> array must be zeroed.</para> + + <para>When the ioctl is called with a pointer to this structure the driver +will attempt to allocate up to the requested number of buffers and store the +actual number allocated and the starting index in the +<structfield>count</structfield> and the <structfield>index</structfield> fields +respectively. On return <structfield>count</structfield> can be smaller than +the number requested. The driver may also increase buffer sizes if required, +however, it will not update <structfield>sizeimage</structfield> field values. +The user has to use <constant>VIDIOC_QUERYBUF</constant> to retrieve that +information.</para> + + <table pgwide="1" frame="none" id="v4l2-create-buffers"> + <title>struct <structname>v4l2_create_buffers</structname></title> + <tgroup cols="3"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u32</entry> + <entry><structfield>index</structfield></entry> + <entry>The starting buffer index, returned by the driver.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>count</structfield></entry> + <entry>The number of buffers requested or granted.</entry> + </row> + <row> + <entry>&v4l2-memory;</entry> + <entry><structfield>memory</structfield></entry> + <entry>Applications set this field to +<constant>V4L2_MEMORY_MMAP</constant> or +<constant>V4L2_MEMORY_USERPTR</constant>.</entry> + </row> + <row> + <entry>&v4l2-format;</entry> + <entry><structfield>format</structfield></entry> + <entry>Filled in by the application, preserved by the driver.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>reserved</structfield>[8]</entry> + <entry>A place holder for future extensions.</entry> + </row> + </tbody> + </tgroup> + </table> + </refsect1> + + <refsect1> + &return-value; + + <variablelist> + <varlistentry> + <term><errorcode>ENOMEM</errorcode></term> + <listitem> + <para>No memory to allocate buffers for <link linkend="mmap">memory +mapped</link> I/O.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><errorcode>EINVAL</errorcode></term> + <listitem> + <para>The buffer type (<structfield>type</structfield> field) or the +requested I/O method (<structfield>memory</structfield>) is not +supported.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> +</refentry> diff --git a/Documentation/DocBook/v4l/vidioc-cropcap.xml b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml index 816e90e..b4f2f25 100644 --- a/Documentation/DocBook/v4l/vidioc-cropcap.xml +++ b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml @@ -156,19 +156,10 @@ on 22 Oct 2002 subject "Re:[V4L][patches!] Re:v4l2/kernel-2.5" --> <term><errorcode>EINVAL</errorcode></term> <listitem> <para>The &v4l2-cropcap; <structfield>type</structfield> is -invalid or the ioctl is not supported. This is not permitted for -video capture, output and overlay devices, which must support -<constant>VIDIOC_CROPCAP</constant>.</para> +invalid. This is not permitted for video capture, output and overlay devices, +which must support <constant>VIDIOC_CROPCAP</constant>.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-dbg-g-chip-ident.xml b/Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-ident.xml index 4a09e20..4ecd966 100644 --- a/Documentation/DocBook/v4l/vidioc-dbg-g-chip-ident.xml +++ b/Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-ident.xml @@ -258,18 +258,9 @@ could not identify it.</entry> <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>The driver does not support this ioctl, or the -<structfield>match_type</structfield> is invalid.</para> + <para>The <structfield>match_type</structfield> is invalid.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-dbg-g-register.xml b/Documentation/DocBook/media/v4l/vidioc-dbg-g-register.xml index 980c7f3..a44aebc 100644 --- a/Documentation/DocBook/v4l/vidioc-dbg-g-register.xml +++ b/Documentation/DocBook/media/v4l/vidioc-dbg-g-register.xml @@ -247,15 +247,6 @@ register.</entry> <variablelist> <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>The driver does not support this ioctl, or the kernel -was not compiled with the <constant>CONFIG_VIDEO_ADV_DEBUG</constant> -option, or the <structfield>match_type</structfield> is invalid, or the -selected chip or register does not exist.</para> - </listitem> - </varlistentry> - <varlistentry> <term><errorcode>EPERM</errorcode></term> <listitem> <para>Insufficient permissions. Root privileges are required @@ -265,11 +256,3 @@ to execute these ioctls.</para> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/media/v4l/vidioc-dqevent.xml b/Documentation/DocBook/media/v4l/vidioc-dqevent.xml new file mode 100644 index 0000000..e8714aa --- /dev/null +++ b/Documentation/DocBook/media/v4l/vidioc-dqevent.xml @@ -0,0 +1,271 @@ +<refentry id="vidioc-dqevent"> + <refmeta> + <refentrytitle>ioctl VIDIOC_DQEVENT</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>VIDIOC_DQEVENT</refname> + <refpurpose>Dequeue event</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcprototype> + <funcdef>int <function>ioctl</function></funcdef> + <paramdef>int <parameter>fd</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>struct v4l2_event +*<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>&fd;</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>VIDIOC_DQEVENT</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para></para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + + <para>Dequeue an event from a video device. No input is required + for this ioctl. All the fields of the &v4l2-event; structure are + filled by the driver. The file handle will also receive exceptions + which the application may get by e.g. using the select system + call.</para> + + <table frame="none" pgwide="1" id="v4l2-event"> + <title>struct <structname>v4l2_event</structname></title> + <tgroup cols="4"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u32</entry> + <entry><structfield>type</structfield></entry> + <entry></entry> + <entry>Type of the event.</entry> + </row> + <row> + <entry>union</entry> + <entry><structfield>u</structfield></entry> + <entry></entry> + <entry></entry> + </row> + <row> + <entry></entry> + <entry>&v4l2-event-vsync;</entry> + <entry><structfield>vsync</structfield></entry> + <entry>Event data for event V4L2_EVENT_VSYNC. + </entry> + </row> + <row> + <entry></entry> + <entry>&v4l2-event-ctrl;</entry> + <entry><structfield>ctrl</structfield></entry> + <entry>Event data for event V4L2_EVENT_CTRL. + </entry> + </row> + <row> + <entry></entry> + <entry>&v4l2-event-frame-sync;</entry> + <entry><structfield>frame</structfield></entry> + <entry>Event data for event V4L2_EVENT_FRAME_SYNC.</entry> + </row> + <row> + <entry></entry> + <entry>__u8</entry> + <entry><structfield>data</structfield>[64]</entry> + <entry>Event data. Defined by the event type. The union + should be used to define easily accessible type for + events.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>pending</structfield></entry> + <entry></entry> + <entry>Number of pending events excluding this one.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>sequence</structfield></entry> + <entry></entry> + <entry>Event sequence number. The sequence number is + incremented for every subscribed event that takes place. + If sequence numbers are not contiguous it means that + events have been lost. + </entry> + </row> + <row> + <entry>struct timespec</entry> + <entry><structfield>timestamp</structfield></entry> + <entry></entry> + <entry>Event timestamp.</entry> + </row> + <row> + <entry>u32</entry> + <entry><structfield>id</structfield></entry> + <entry></entry> + <entry>The ID associated with the event source. If the event does not + have an associated ID (this depends on the event type), then this + is 0.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>reserved</structfield>[8]</entry> + <entry></entry> + <entry>Reserved for future extensions. Drivers must set + the array to zero.</entry> + </row> + </tbody> + </tgroup> + </table> + + <table frame="none" pgwide="1" id="v4l2-event-vsync"> + <title>struct <structname>v4l2_event_vsync</structname></title> + <tgroup cols="3"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u8</entry> + <entry><structfield>field</structfield></entry> + <entry>The upcoming field. See &v4l2-field;.</entry> + </row> + </tbody> + </tgroup> + </table> + + <table frame="none" pgwide="1" id="v4l2-event-ctrl"> + <title>struct <structname>v4l2_event_ctrl</structname></title> + <tgroup cols="4"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u32</entry> + <entry><structfield>changes</structfield></entry> + <entry></entry> + <entry>A bitmask that tells what has changed. See <xref linkend="changes-flags" />.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>type</structfield></entry> + <entry></entry> + <entry>The type of the control. See &v4l2-ctrl-type;.</entry> + </row> + <row> + <entry>union (anonymous)</entry> + <entry></entry> + <entry></entry> + <entry></entry> + </row> + <row> + <entry></entry> + <entry>__s32</entry> + <entry><structfield>value</structfield></entry> + <entry>The 32-bit value of the control for 32-bit control types. + This is 0 for string controls since the value of a string + cannot be passed using &VIDIOC-DQEVENT;.</entry> + </row> + <row> + <entry></entry> + <entry>__s64</entry> + <entry><structfield>value64</structfield></entry> + <entry>The 64-bit value of the control for 64-bit control types.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>flags</structfield></entry> + <entry></entry> + <entry>The control flags. See <xref linkend="control-flags" />.</entry> + </row> + <row> + <entry>__s32</entry> + <entry><structfield>minimum</structfield></entry> + <entry></entry> + <entry>The minimum value of the control. See &v4l2-queryctrl;.</entry> + </row> + <row> + <entry>__s32</entry> + <entry><structfield>maximum</structfield></entry> + <entry></entry> + <entry>The maximum value of the control. See &v4l2-queryctrl;.</entry> + </row> + <row> + <entry>__s32</entry> + <entry><structfield>step</structfield></entry> + <entry></entry> + <entry>The step value of the control. See &v4l2-queryctrl;.</entry> + </row> + <row> + <entry>__s32</entry> + <entry><structfield>default_value</structfield></entry> + <entry></entry> + <entry>The default value value of the control. See &v4l2-queryctrl;.</entry> + </row> + </tbody> + </tgroup> + </table> + + <table frame="none" pgwide="1" id="v4l2-event-frame-sync"> + <title>struct <structname>v4l2_event_frame_sync</structname></title> + <tgroup cols="3"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u32</entry> + <entry><structfield>frame_sequence</structfield></entry> + <entry> + The sequence number of the frame being received. + </entry> + </row> + </tbody> + </tgroup> + </table> + + <table pgwide="1" frame="none" id="changes-flags"> + <title>Changes</title> + <tgroup cols="3"> + &cs-def; + <tbody valign="top"> + <row> + <entry><constant>V4L2_EVENT_CTRL_CH_VALUE</constant></entry> + <entry>0x0001</entry> + <entry>This control event was triggered because the value of the control + changed. Special case: if a button control is pressed, then this + event is sent as well, even though there is not explicit value + associated with a button control.</entry> + </row> + <row> + <entry><constant>V4L2_EVENT_CTRL_CH_FLAGS</constant></entry> + <entry>0x0002</entry> + <entry>This control event was triggered because the control flags + changed.</entry> + </row> + </tbody> + </tgroup> + </table> + </refsect1> + <refsect1> + &return-value; + </refsect1> +</refentry> diff --git a/Documentation/DocBook/v4l/vidioc-encoder-cmd.xml b/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml index b0dde94..af7f3f2 100644 --- a/Documentation/DocBook/v4l/vidioc-encoder-cmd.xml +++ b/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml @@ -180,8 +180,7 @@ Pictures</wordasword>, rather than immediately.</entry> <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>The driver does not support this ioctl, or the -<structfield>cmd</structfield> field is invalid.</para> + <para>The <structfield>cmd</structfield> field is invalid.</para> </listitem> </varlistentry> <varlistentry> @@ -194,11 +193,3 @@ the encoder was not running.</para> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-enum-dv-presets.xml b/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml index 1d31427..1d31427 100644 --- a/Documentation/DocBook/v4l/vidioc-enum-dv-presets.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml diff --git a/Documentation/DocBook/v4l/vidioc-enum-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml index 71d373b..71d373b 100644 --- a/Documentation/DocBook/v4l/vidioc-enum-fmt.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml diff --git a/Documentation/DocBook/v4l/vidioc-enum-frameintervals.xml b/Documentation/DocBook/media/v4l/vidioc-enum-frameintervals.xml index 3c216e1..5fd72c4 100644 --- a/Documentation/DocBook/v4l/vidioc-enum-frameintervals.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enum-frameintervals.xml @@ -254,17 +254,6 @@ enumerated.</entry> <refsect1> &return-value; - - <para>See the description section above for a list of return -values that <varname>errno</varname> can have.</para> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-enum-framesizes.xml b/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml index 6afa454..f77a13f 100644 --- a/Documentation/DocBook/v4l/vidioc-enum-framesizes.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml @@ -267,16 +267,5 @@ application should zero out all members except for the <refsect1> &return-value; - - <para>See the description section above for a list of return -values that <varname>errno</varname> can have.</para> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-enumaudio.xml b/Documentation/DocBook/media/v4l/vidioc-enumaudio.xml index 9ae8f2d..ea816ab 100644 --- a/Documentation/DocBook/v4l/vidioc-enumaudio.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enumaudio.xml @@ -68,19 +68,9 @@ until the driver returns <errorcode>EINVAL</errorcode>.</para> <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>The number of the audio input is out of bounds, or -there are no audio inputs at all and this ioctl is not -supported.</para> + <para>The number of the audio input is out of bounds.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-enumaudioout.xml b/Documentation/DocBook/media/v4l/vidioc-enumaudioout.xml index d3d7c0a..2e87ced 100644 --- a/Documentation/DocBook/v4l/vidioc-enumaudioout.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enumaudioout.xml @@ -71,19 +71,9 @@ signal to a sound card are not audio outputs in this sense.</para> <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>The number of the audio output is out of bounds, or -there are no audio outputs at all and this ioctl is not -supported.</para> + <para>The number of the audio output is out of bounds.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-enuminput.xml b/Documentation/DocBook/media/v4l/vidioc-enuminput.xml index 476fe1d..476fe1d 100644 --- a/Documentation/DocBook/v4l/vidioc-enuminput.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enuminput.xml diff --git a/Documentation/DocBook/v4l/vidioc-enumoutput.xml b/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml index a281d26..a281d26 100644 --- a/Documentation/DocBook/v4l/vidioc-enumoutput.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml diff --git a/Documentation/DocBook/v4l/vidioc-enumstd.xml b/Documentation/DocBook/media/v4l/vidioc-enumstd.xml index 95803fe..95803fe 100644 --- a/Documentation/DocBook/v4l/vidioc-enumstd.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enumstd.xml diff --git a/Documentation/DocBook/v4l/vidioc-g-audio.xml b/Documentation/DocBook/media/v4l/vidioc-g-audio.xml index 65361a8..d7bb9b3 100644 --- a/Documentation/DocBook/v4l/vidioc-g-audio.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-audio.xml @@ -164,25 +164,9 @@ tuner.</entry> <listitem> <para>No audio inputs combine with the current video input, or the number of the selected audio input is out of bounds or it does -not combine, or there are no audio inputs at all and the ioctl is not -supported.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>I/O is in progress, the input cannot be -switched.</para> +not combine.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-audioout.xml b/Documentation/DocBook/media/v4l/vidioc-g-audioout.xml index 3632730..200a270 100644 --- a/Documentation/DocBook/v4l/vidioc-g-audioout.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-audioout.xml @@ -130,25 +130,9 @@ applications must set the array to zero.</entry> <listitem> <para>No audio outputs combine with the current video output, or the number of the selected audio output is out of bounds or -it does not combine, or there are no audio outputs at all and the -ioctl is not supported.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>I/O is in progress, the output cannot be -switched.</para> +it does not combine.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-crop.xml b/Documentation/DocBook/media/v4l/vidioc-g-crop.xml index d235b1d..01a5064 100644 --- a/Documentation/DocBook/v4l/vidioc-g-crop.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-crop.xml @@ -122,22 +122,5 @@ for &v4l2-cropcap; <structfield>bounds</structfield> is used.</entry> <refsect1> &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>Cropping is not supported.</para> - </listitem> - </varlistentry> - </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-ctrl.xml b/Documentation/DocBook/media/v4l/vidioc-g-ctrl.xml index 8b5e6ff..5146d00 100644 --- a/Documentation/DocBook/v4l/vidioc-g-ctrl.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-ctrl.xml @@ -117,6 +117,13 @@ because another applications took over control of the device function this control belongs to.</para> </listitem> </varlistentry> + <varlistentry> + <term><errorcode>EACCES</errorcode></term> + <listitem> + <para>Attempt to set a read-only control or to get a + write-only control.</para> + </listitem> + </varlistentry> </variablelist> </refsect1> </refentry> diff --git a/Documentation/DocBook/v4l/vidioc-g-dv-preset.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml index d733721..7940c11 100644 --- a/Documentation/DocBook/v4l/vidioc-g-dv-preset.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml @@ -97,14 +97,8 @@ If the preset is not supported, it returns an &EINVAL; </para> </tbody> </tgroup> </table> - + </refsect1> + <refsect1> + &return-value; </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml index d5ec6ab..4a8648a 100644 --- a/Documentation/DocBook/v4l/vidioc-g-dv-timings.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml @@ -212,12 +212,7 @@ bit 0 (V4L2_DV_VSYNC_POS_POL) is for vertical sync polarity and bit 1 (V4L2_DV_H </tgroup> </table> </refsect1> + <refsect1> + &return-value; + </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-enc-index.xml b/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml index 9f242e4..2aef02c 100644 --- a/Documentation/DocBook/v4l/vidioc-g-enc-index.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml @@ -192,22 +192,5 @@ this mask to obtain the picture coding type.</entry> <refsect1> &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>The driver does not support this ioctl.</para> - </listitem> - </varlistentry> - </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml index 3aa7f8f..5122ce8 100644 --- a/Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml @@ -250,6 +250,13 @@ These controls are described in <xref These controls are described in <xref linkend="fm-tx-controls" />.</entry> </row> + <row> + <entry><constant>V4L2_CTRL_CLASS_FLASH</constant></entry> + <entry>0x9c0000</entry> + <entry>The class containing flash device controls. +These controls are described in <xref + linkend="flash-controls" />.</entry> + </row> </tbody> </tgroup> </table> @@ -294,6 +301,13 @@ The field <structfield>size</structfield> is set to a value that is enough to store the payload and this error code is returned.</para> </listitem> </varlistentry> + <varlistentry> + <term><errorcode>EACCES</errorcode></term> + <listitem> + <para>Attempt to try or set a read-only control or to get a + write-only control.</para> + </listitem> + </varlistentry> </variablelist> </refsect1> </refentry> diff --git a/Documentation/DocBook/v4l/vidioc-g-fbuf.xml b/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml index e7dda48..0557182 100644 --- a/Documentation/DocBook/v4l/vidioc-g-fbuf.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml @@ -446,28 +446,11 @@ overlay.</para> </listitem> </varlistentry> <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>The framebuffer parameters cannot be changed at this -time because overlay is already enabled, or capturing is enabled -and the hardware cannot capture and overlay simultaneously.</para> - </listitem> - </varlistentry> - <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>The ioctl is not supported or the -<constant>VIDIOC_S_FBUF</constant> parameters are unsuitable.</para> + <para>The <constant>VIDIOC_S_FBUF</constant> parameters are unsuitable.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml index a4ae59b..17fbda1 100644 --- a/Documentation/DocBook/v4l/vidioc-g-fmt.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml @@ -184,29 +184,13 @@ capture and output devices.</entry> <variablelist> <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>The data format cannot be changed at this -time, for example because I/O is already in progress.</para> - </listitem> - </varlistentry> - <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> <para>The &v4l2-format; <structfield>type</structfield> -field is invalid, the requested buffer type not supported, or -<constant>VIDIOC_TRY_FMT</constant> was called and is not -supported with this buffer type.</para> +field is invalid, the requested buffer type not supported, or the +format is not supported with this buffer type.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-frequency.xml b/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml index 062d720..062d720 100644 --- a/Documentation/DocBook/v4l/vidioc-g-frequency.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml diff --git a/Documentation/DocBook/v4l/vidioc-g-input.xml b/Documentation/DocBook/media/v4l/vidioc-g-input.xml index ed076e9..08ae82f 100644 --- a/Documentation/DocBook/v4l/vidioc-g-input.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-input.xml @@ -75,26 +75,9 @@ querying or negotiating any other parameters.</para> <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>The number of the video input is out of bounds, or -there are no video inputs at all and this ioctl is not -supported.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>I/O is in progress, the input cannot be -switched.</para> + <para>The number of the video input is out of bounds.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-jpegcomp.xml b/Documentation/DocBook/media/v4l/vidioc-g-jpegcomp.xml index 77394b2..01ea24b 100644 --- a/Documentation/DocBook/v4l/vidioc-g-jpegcomp.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-jpegcomp.xml @@ -159,22 +159,5 @@ to add them.</para> <refsect1> &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>This ioctl is not supported.</para> - </listitem> - </varlistentry> - </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-modulator.xml b/Documentation/DocBook/media/v4l/vidioc-g-modulator.xml index 15ce660..15ce660 100644 --- a/Documentation/DocBook/v4l/vidioc-g-modulator.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-modulator.xml diff --git a/Documentation/DocBook/v4l/vidioc-g-output.xml b/Documentation/DocBook/media/v4l/vidioc-g-output.xml index 3ea8c0e..fd45f1c 100644 --- a/Documentation/DocBook/v4l/vidioc-g-output.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-output.xml @@ -76,25 +76,9 @@ negotiating any other parameters.</para> <term><errorcode>EINVAL</errorcode></term> <listitem> <para>The number of the video output is out of bounds, or -there are no video outputs at all and this ioctl is not -supported.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>I/O is in progress, the output cannot be -switched.</para> +there are no video outputs at all.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-parm.xml b/Documentation/DocBook/media/v4l/vidioc-g-parm.xml index 392aa9e..19b1d85 100644 --- a/Documentation/DocBook/v4l/vidioc-g-parm.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-parm.xml @@ -311,22 +311,5 @@ excessive motion blur. </para> <refsect1> &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>This ioctl is not supported.</para> - </listitem> - </varlistentry> - </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-priority.xml b/Documentation/DocBook/media/v4l/vidioc-g-priority.xml index 5fb0019..8f5e3da 100644 --- a/Documentation/DocBook/v4l/vidioc-g-priority.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-priority.xml @@ -120,8 +120,7 @@ recording.</entry> <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>The requested priority value is invalid, or the -driver does not support access priorities.</para> + <para>The requested priority value is invalid.</para> </listitem> </varlistentry> <varlistentry> diff --git a/Documentation/DocBook/v4l/vidioc-g-sliced-vbi-cap.xml b/Documentation/DocBook/media/v4l/vidioc-g-sliced-vbi-cap.xml index 10e721b..71741da 100644 --- a/Documentation/DocBook/v4l/vidioc-g-sliced-vbi-cap.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-sliced-vbi-cap.xml @@ -246,19 +246,10 @@ line systems.</entry> <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>The device does not support sliced VBI capturing or -output, or the value in the <structfield>type</structfield> field is + <para>The value in the <structfield>type</structfield> field is wrong.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-g-std.xml b/Documentation/DocBook/media/v4l/vidioc-g-std.xml index 912f851..37996f2 100644 --- a/Documentation/DocBook/v4l/vidioc-g-std.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-std.xml @@ -82,14 +82,7 @@ standards.</para> <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>This ioctl is not supported, or the -<constant>VIDIOC_S_STD</constant> parameter was unsuitable.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>The device is busy and therefore can not change the standard</para> + <para>The <constant>VIDIOC_S_STD</constant> parameter was unsuitable.</para> </listitem> </varlistentry> </variablelist> diff --git a/Documentation/DocBook/v4l/vidioc-g-tuner.xml b/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml index bd98c73..bd98c73 100644 --- a/Documentation/DocBook/v4l/vidioc-g-tuner.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml diff --git a/Documentation/DocBook/v4l/vidioc-log-status.xml b/Documentation/DocBook/media/v4l/vidioc-log-status.xml index 2634b7c..5ded7d3 100644 --- a/Documentation/DocBook/v4l/vidioc-log-status.xml +++ b/Documentation/DocBook/media/v4l/vidioc-log-status.xml @@ -37,22 +37,5 @@ was introduced in Linux 2.6.15.</para> <refsect1> &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>The driver does not support this ioctl.</para> - </listitem> - </varlistentry> - </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-overlay.xml b/Documentation/DocBook/media/v4l/vidioc-overlay.xml index 1036c58..250a7de 100644 --- a/Documentation/DocBook/v4l/vidioc-overlay.xml +++ b/Documentation/DocBook/media/v4l/vidioc-overlay.xml @@ -65,19 +65,10 @@ <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>Video overlay is not supported, or the -parameters have not been set up. See <xref + <para>The overlay parameters have not been set up. See <xref linkend="overlay" /> for the necessary steps.</para> </listitem> </varlistentry> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/media/v4l/vidioc-prepare-buf.xml b/Documentation/DocBook/media/v4l/vidioc-prepare-buf.xml new file mode 100644 index 0000000..7bde698 --- /dev/null +++ b/Documentation/DocBook/media/v4l/vidioc-prepare-buf.xml @@ -0,0 +1,88 @@ +<refentry id="vidioc-prepare-buf"> + <refmeta> + <refentrytitle>ioctl VIDIOC_PREPARE_BUF</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>VIDIOC_PREPARE_BUF</refname> + <refpurpose>Prepare a buffer for I/O</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcprototype> + <funcdef>int <function>ioctl</function></funcdef> + <paramdef>int <parameter>fd</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>struct v4l2_buffer *<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>&fd;</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>VIDIOC_PREPARE_BUF</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para></para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + + <para>Applications can optionally call the +<constant>VIDIOC_PREPARE_BUF</constant> ioctl to pass ownership of the buffer +to the driver before actually enqueuing it, using the +<constant>VIDIOC_QBUF</constant> ioctl, and to prepare it for future I/O. +Such preparations may include cache invalidation or cleaning. Performing them +in advance saves time during the actual I/O. In case such cache operations are +not required, the application can use one of +<constant>V4L2_BUF_FLAG_NO_CACHE_INVALIDATE</constant> and +<constant>V4L2_BUF_FLAG_NO_CACHE_CLEAN</constant> flags to skip the respective +step.</para> + + <para>The <structname>v4l2_buffer</structname> structure is +specified in <xref linkend="buffer" />.</para> + </refsect1> + + <refsect1> + &return-value; + + <variablelist> + <varlistentry> + <term><errorcode>EBUSY</errorcode></term> + <listitem> + <para>File I/O is in progress.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><errorcode>EINVAL</errorcode></term> + <listitem> + <para>The buffer <structfield>type</structfield> is not +supported, or the <structfield>index</structfield> is out of bounds, +or no buffers have been allocated yet, or the +<structfield>userptr</structfield> or +<structfield>length</structfield> are invalid.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> +</refentry> diff --git a/Documentation/DocBook/v4l/vidioc-qbuf.xml b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml index f2b11f8..9caa49a 100644 --- a/Documentation/DocBook/v4l/vidioc-qbuf.xml +++ b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml @@ -158,15 +158,6 @@ or no buffers have been allocated yet, or the <structfield>userptr</structfield> or <structfield>length</structfield> are invalid.</para> </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>ENOMEM</errorcode></term> - <listitem> - <para>Not enough physical or virtual memory was available to -enqueue a user pointer buffer.</para> - </listitem> - </varlistentry> - <varlistentry> <term><errorcode>EIO</errorcode></term> <listitem> <para><constant>VIDIOC_DQBUF</constant> failed due to an @@ -184,11 +175,3 @@ continue streaming. </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml b/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml index d272f7a..23b17f6 100644 --- a/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml +++ b/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml @@ -61,27 +61,5 @@ returned.</para> <refsect1> &return-value; - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>This ioctl is not supported.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>The device is busy and therefore can not sense the preset</para> - </listitem> - </varlistentry> - </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-querybuf.xml b/Documentation/DocBook/media/v4l/vidioc-querybuf.xml index 5c104d4..5c104d4 100644 --- a/Documentation/DocBook/v4l/vidioc-querybuf.xml +++ b/Documentation/DocBook/media/v4l/vidioc-querybuf.xml diff --git a/Documentation/DocBook/v4l/vidioc-querycap.xml b/Documentation/DocBook/media/v4l/vidioc-querycap.xml index f29f1b8..e3664d6 100644 --- a/Documentation/DocBook/v4l/vidioc-querycap.xml +++ b/Documentation/DocBook/media/v4l/vidioc-querycap.xml @@ -67,9 +67,8 @@ driver is not compatible with this specification the ioctl returns an <entry><para>Name of the driver, a unique NUL-terminated ASCII string. For example: "bttv". Driver specific applications can use this information to verify the driver identity. It is also useful -to work around known bugs, or to identify drivers in error reports. -The driver version is stored in the <structfield>version</structfield> -field.</para><para>Storing strings in fixed sized arrays is bad +to work around known bugs, or to identify drivers in error reports.</para> +<para>Storing strings in fixed sized arrays is bad practice but unavoidable here. Drivers and applications should take precautions to never read or write beyond the end of the array and to make sure the strings are properly NUL-terminated.</para></entry> @@ -100,9 +99,13 @@ empty string (<structfield>bus_info</structfield>[0] = 0).<!-- XXX pci_dev->slot <row> <entry>__u32</entry> <entry><structfield>version</structfield></entry> - <entry><para>Version number of the driver. Together with -the <structfield>driver</structfield> field this identifies a -particular driver. The version number is formatted using the + <entry><para>Version number of the driver.</para> +<para>Starting on kernel 3.1, the version reported is provided per +V4L2 subsystem, following the same Kernel numberation scheme. However, it +should not always return the same version as the kernel, if, for example, +an stable or distribution-modified kernel uses the V4L2 stack from a +newer kernel.</para> +<para>The version number is formatted using the <constant>KERNEL_VERSION()</constant> macro:</para></entry> </row> <row> @@ -280,24 +283,5 @@ linkend="mmap">streaming</link> I/O method.</entry> <refsect1> &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>The device is not compatible with this -specification.</para> - </listitem> - </varlistentry> - </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> - diff --git a/Documentation/DocBook/v4l/vidioc-queryctrl.xml b/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml index 0d5e828..0ac0057 100644 --- a/Documentation/DocBook/v4l/vidioc-queryctrl.xml +++ b/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml @@ -156,7 +156,8 @@ signed value.</entry> <entry>Maximum value, inclusive. This field gives an upper bound for <constant>V4L2_CTRL_TYPE_INTEGER</constant> controls and the highest valid index for <constant>V4L2_CTRL_TYPE_MENU</constant> -controls. +controls. For <constant>V4L2_CTRL_TYPE_BITMASK</constant> controls it is the +set of usable bits. For <constant>V4L2_CTRL_TYPE_STRING</constant> controls the maximum value gives the maximum length of the string. This length <emphasis>does not include the terminating zero</emphasis>. It may not be valid for any other type of control, including @@ -291,6 +292,15 @@ the menu items can be enumerated with the <constant>VIDIOC_QUERYMENU</constant> ioctl.</entry> </row> <row> + <entry><constant>V4L2_CTRL_TYPE_BITMASK</constant></entry> + <entry>0</entry> + <entry>n/a</entry> + <entry>any</entry> + <entry>A bitmask field. The maximum value is the set of bits that can +be used, all other bits are to be 0. The maximum value is interpreted as a __u32, +allowing the use of bit 31 in the bitmask.</entry> + </row> + <row> <entry><constant>V4L2_CTRL_TYPE_BUTTON</constant></entry> <entry>0</entry> <entry>0</entry> @@ -396,6 +406,15 @@ flag is typically present for relative controls or action controls where writing a value will cause the device to carry out a given action (⪚ motor control) but no meaningful value can be returned.</entry> </row> + <row> + <entry><constant>V4L2_CTRL_FLAG_VOLATILE</constant></entry> + <entry>0x0080</entry> + <entry>This control is volatile, which means that the value of the control +changes continuously. A typical example would be the current gain value if the device +is in auto-gain mode. In such a case the hardware calculates the gain value based on +the lighting conditions which can change over time. Note that setting a new value for +a volatile control will have no effect. The new value will just be ignored.</entry> + </row> </tbody> </tgroup> </table> diff --git a/Documentation/DocBook/v4l/vidioc-querystd.xml b/Documentation/DocBook/media/v4l/vidioc-querystd.xml index 1a9e603..4b79c7c 100644 --- a/Documentation/DocBook/v4l/vidioc-querystd.xml +++ b/Documentation/DocBook/media/v4l/vidioc-querystd.xml @@ -62,28 +62,5 @@ current video input or output.</para> <refsect1> &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>This ioctl is not supported.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>The device is busy and therefore can not detect the standard</para> - </listitem> - </varlistentry> - </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-reqbufs.xml b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml index 69800ae..7be4b1d 100644 --- a/Documentation/DocBook/v4l/vidioc-reqbufs.xml +++ b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml @@ -122,14 +122,6 @@ higher. This array should be zeroed by applications.</entry> <variablelist> <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>The driver supports multiple opens and I/O is already -in progress, or reallocation of buffers was attempted although one or -more are still mapped.</para> - </listitem> - </varlistentry> - <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> <para>The buffer type (<structfield>type</structfield> field) or the @@ -140,11 +132,3 @@ supported.</para> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-s-hw-freq-seek.xml b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml index c30dcc4..c30dcc4 100644 --- a/Documentation/DocBook/v4l/vidioc-s-hw-freq-seek.xml +++ b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml diff --git a/Documentation/DocBook/v4l/vidioc-streamon.xml b/Documentation/DocBook/media/v4l/vidioc-streamon.xml index 75ed39b..81cca45 100644 --- a/Documentation/DocBook/v4l/vidioc-streamon.xml +++ b/Documentation/DocBook/media/v4l/vidioc-streamon.xml @@ -88,9 +88,9 @@ synchronize with other events.</para> <varlistentry> <term><errorcode>EINVAL</errorcode></term> <listitem> - <para>Streaming I/O is not supported, the buffer -<structfield>type</structfield> is not supported, or no buffers have -been allocated (memory mapping) or enqueued (output) yet.</para> + <para>The buffer<structfield>type</structfield> is not supported, + or no buffers have been allocated (memory mapping) or enqueued + (output) yet.</para> </listitem> </varlistentry> <varlistentry> @@ -105,11 +105,3 @@ been allocated (memory mapping) or enqueued (output) yet.</para> </variablelist> </refsect1> </refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-subdev-enum-frame-interval.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-interval.xml index 2f8f4f0..2f8f4f0 100644 --- a/Documentation/DocBook/v4l/vidioc-subdev-enum-frame-interval.xml +++ b/Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-interval.xml diff --git a/Documentation/DocBook/v4l/vidioc-subdev-enum-frame-size.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-size.xml index 79ce42b..79ce42b 100644 --- a/Documentation/DocBook/v4l/vidioc-subdev-enum-frame-size.xml +++ b/Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-size.xml diff --git a/Documentation/DocBook/v4l/vidioc-subdev-enum-mbus-code.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-enum-mbus-code.xml index a6b3432..a6b3432 100644 --- a/Documentation/DocBook/v4l/vidioc-subdev-enum-mbus-code.xml +++ b/Documentation/DocBook/media/v4l/vidioc-subdev-enum-mbus-code.xml diff --git a/Documentation/DocBook/v4l/vidioc-subdev-g-crop.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-crop.xml index 0619732..0619732 100644 --- a/Documentation/DocBook/v4l/vidioc-subdev-g-crop.xml +++ b/Documentation/DocBook/media/v4l/vidioc-subdev-g-crop.xml diff --git a/Documentation/DocBook/v4l/vidioc-subdev-g-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-fmt.xml index f367c57..a67cde6 100644 --- a/Documentation/DocBook/v4l/vidioc-subdev-g-fmt.xml +++ b/Documentation/DocBook/media/v4l/vidioc-subdev-g-fmt.xml @@ -177,4 +177,7 @@ </varlistentry> </variablelist> </refsect1> + <refsect1> + &return-value; + </refsect1> </refentry> diff --git a/Documentation/DocBook/v4l/vidioc-subdev-g-frame-interval.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-frame-interval.xml index 0bc3ea2..0bc3ea2 100644 --- a/Documentation/DocBook/v4l/vidioc-subdev-g-frame-interval.xml +++ b/Documentation/DocBook/media/v4l/vidioc-subdev-g-frame-interval.xml diff --git a/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml b/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml new file mode 100644 index 0000000..5c70b61 --- /dev/null +++ b/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml @@ -0,0 +1,206 @@ +<refentry id="vidioc-subscribe-event"> + <refmeta> + <refentrytitle>ioctl VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refname> + <refpurpose>Subscribe or unsubscribe event</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcprototype> + <funcdef>int <function>ioctl</function></funcdef> + <paramdef>int <parameter>fd</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>struct v4l2_event_subscription +*<parameter>argp</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Arguments</title> + + <variablelist> + <varlistentry> + <term><parameter>fd</parameter></term> + <listitem> + <para>&fd;</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>request</parameter></term> + <listitem> + <para>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para></para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + + <para>Subscribe or unsubscribe V4L2 event. Subscribed events are + dequeued by using the &VIDIOC-DQEVENT; ioctl.</para> + + <table frame="none" pgwide="1" id="v4l2-event-subscription"> + <title>struct <structname>v4l2_event_subscription</structname></title> + <tgroup cols="3"> + &cs-str; + <tbody valign="top"> + <row> + <entry>__u32</entry> + <entry><structfield>type</structfield></entry> + <entry>Type of the event.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>id</structfield></entry> + <entry>ID of the event source. If there is no ID associated with + the event source, then set this to 0. Whether or not an event + needs an ID depends on the event type.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>flags</structfield></entry> + <entry>Event flags, see <xref linkend="event-flags" />.</entry> + </row> + <row> + <entry>__u32</entry> + <entry><structfield>reserved</structfield>[5]</entry> + <entry>Reserved for future extensions. Drivers and applications + must set the array to zero.</entry> + </row> + </tbody> + </tgroup> + </table> + + <table frame="none" pgwide="1" id="event-type"> + <title>Event Types</title> + <tgroup cols="3"> + &cs-def; + <tbody valign="top"> + <row> + <entry><constant>V4L2_EVENT_ALL</constant></entry> + <entry>0</entry> + <entry>All events. V4L2_EVENT_ALL is valid only for + VIDIOC_UNSUBSCRIBE_EVENT for unsubscribing all events at once. + </entry> + </row> + <row> + <entry><constant>V4L2_EVENT_VSYNC</constant></entry> + <entry>1</entry> + <entry>This event is triggered on the vertical sync. + This event has a &v4l2-event-vsync; associated with it. + </entry> + </row> + <row> + <entry><constant>V4L2_EVENT_EOS</constant></entry> + <entry>2</entry> + <entry>This event is triggered when the end of a stream is reached. + This is typically used with MPEG decoders to report to the application + when the last of the MPEG stream has been decoded. + </entry> + </row> + <row> + <entry><constant>V4L2_EVENT_CTRL</constant></entry> + <entry>3</entry> + <entry><para>This event requires that the <structfield>id</structfield> + matches the control ID from which you want to receive events. + This event is triggered if the control's value changes, if a + button control is pressed or if the control's flags change. + This event has a &v4l2-event-ctrl; associated with it. This struct + contains much of the same information as &v4l2-queryctrl; and + &v4l2-control;.</para> + + <para>If the event is generated due to a call to &VIDIOC-S-CTRL; or + &VIDIOC-S-EXT-CTRLS;, then the event will <emphasis>not</emphasis> be sent to + the file handle that called the ioctl function. This prevents + nasty feedback loops. If you <emphasis>do</emphasis> want to get the + event, then set the <constant>V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK</constant> + flag. + </para> + + <para>This event type will ensure that no information is lost when + more events are raised than there is room internally. In that + case the &v4l2-event-ctrl; of the second-oldest event is kept, + but the <structfield>changes</structfield> field of the + second-oldest event is ORed with the <structfield>changes</structfield> + field of the oldest event.</para> + </entry> + </row> + <row> + <entry><constant>V4L2_EVENT_FRAME_SYNC</constant></entry> + <entry>4</entry> + <entry> + <para>Triggered immediately when the reception of a + frame has begun. This event has a + &v4l2-event-frame-sync; associated with it.</para> + + <para>If the hardware needs to be stopped in the case of a + buffer underrun it might not be able to generate this event. + In such cases the <structfield>frame_sequence</structfield> + field in &v4l2-event-frame-sync; will not be incremented. This + causes two consecutive frame sequence numbers to have n times + frame interval in between them.</para> + </entry> + </row> + <row> + <entry><constant>V4L2_EVENT_PRIVATE_START</constant></entry> + <entry>0x08000000</entry> + <entry>Base event number for driver-private events.</entry> + </row> + </tbody> + </tgroup> + </table> + + <table pgwide="1" frame="none" id="event-flags"> + <title>Event Flags</title> + <tgroup cols="3"> + &cs-def; + <tbody valign="top"> + <row> + <entry><constant>V4L2_EVENT_SUB_FL_SEND_INITIAL</constant></entry> + <entry>0x0001</entry> + <entry>When this event is subscribed an initial event will be sent + containing the current status. This only makes sense for events + that are triggered by a status change such as <constant>V4L2_EVENT_CTRL</constant>. + Other events will ignore this flag.</entry> + </row> + <row> + <entry><constant>V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK</constant></entry> + <entry>0x0002</entry> + <entry><para>If set, then events directly caused by an ioctl will also be sent to + the filehandle that called that ioctl. For example, changing a control using + &VIDIOC-S-CTRL; will cause a V4L2_EVENT_CTRL to be sent back to that same + filehandle. Normally such events are suppressed to prevent feedback loops + where an application changes a control to a one value and then another, and + then receives an event telling it that that control has changed to the first + value.</para> + + <para>Since it can't tell whether that event was caused by another application + or by the &VIDIOC-S-CTRL; call it is hard to decide whether to set the + control to the value in the event, or ignore it.</para> + + <para>Think carefully when you set this flag so you won't get into situations + like that.</para> + </entry> + </row> + </tbody> + </tgroup> + </table> + + </refsect1> + <refsect1> + &return-value; + </refsect1> +</refentry> diff --git a/Documentation/DocBook/media/vbi_525.gif.b64 b/Documentation/DocBook/media/vbi_525.gif.b64 new file mode 100644 index 0000000..d5dcf06 --- /dev/null +++ b/Documentation/DocBook/media/vbi_525.gif.b64 @@ -0,0 +1,84 @@ +R0lGODlhKgPIAIAAAAAAAP///yH5BAEAAAEALAAAAAAqA8gAAAL+jI+py+0Po5y02ouz3rz7D4bi 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The generic error codes are described at the <link linkend='gen-errors'>Generic Error Codes</link> chapter.</para>"> +<!ENTITY return-value-dvb "<para>RETURN VALUE</para><para>On success <returnvalue>0</returnvalue> is returned, on error <returnvalue>-1</returnvalue> and the <varname>errno</varname> variable is set appropriately. The generic error codes are described at the <link linkend='gen-errors'>Generic Error Codes</link> chapter.</para>"> <!ENTITY manvol "<manvolnum>2</manvolnum>"> <!-- Table templates: structs, structs w/union, defines. --> @@ -110,6 +111,11 @@ Foundation. A copy of the license is included in the chapter entitled &sub-media-controller; </part> +<chapter id="gen_errors"> +&sub-gen-errors; +</chapter> + + &sub-fdl-appendix; </book> diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl index 17910e2..0c674be 100644 --- a/Documentation/DocBook/mtdnand.tmpl +++ b/Documentation/DocBook/mtdnand.tmpl @@ -572,7 +572,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip) </para> <para> The simplest way to activate the FLASH based bad block table support - is to set the option NAND_USE_FLASH_BBT in the option field of + is to set the option NAND_BBT_USE_FLASH in the bbt_option field of the nand chip structure before calling nand_scan(). For AG-AND chips is this done by default. This activates the default FLASH based bad block table functionality @@ -773,20 +773,6 @@ struct nand_oobinfo { done according to the default builtin scheme. </para> </sect2> - <sect2 id="User_space_placement_selection"> - <title>User space placement selection</title> - <para> - All non ecc functions like mtd->read and mtd->write use an internal - structure, which can be set by an ioctl. This structure is preset - to the autoplacement default. - <programlisting> - ioctl (fd, MEMSETOOBSEL, oobsel); - </programlisting> - oobsel is a pointer to a user supplied structure of type - nand_oobconfig. The contents of this structure must match the - criteria of the filesystem, which will be used. See an example in utils/nandwrite.c. - </para> - </sect2> </sect1> <sect1 id="Spare_area_autoplacement_default"> <title>Spare area autoplacement default schemes</title> @@ -1158,9 +1144,6 @@ in this page</entry> These constants are defined in nand.h. They are ored together to describe the functionality. <programlisting> -/* Use a flash based bad block table. This option is parsed by the - * default bad block table function (nand_default_bbt). */ -#define NAND_USE_FLASH_BBT 0x00010000 /* The hw ecc generator provides a syndrome instead a ecc value on read * This can only work if we have the ecc bytes directly behind the * data bytes. Applies for DOC and AG-AND Renesas HW Reed Solomon generators */ diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl index 7c4b514d..ac3d001 100644 --- a/Documentation/DocBook/uio-howto.tmpl +++ b/Documentation/DocBook/uio-howto.tmpl @@ -521,6 +521,11 @@ Here's a description of the fields of <varname>struct uio_mem</varname>: <itemizedlist> <listitem><para> +<varname>const char *name</varname>: Optional. Set this to help identify +the memory region, it will show up in the corresponding sysfs node. +</para></listitem> + +<listitem><para> <varname>int memtype</varname>: Required if the mapping is used. Set this to <varname>UIO_MEM_PHYS</varname> if you you have physical memory on your card to be mapped. Use <varname>UIO_MEM_LOGICAL</varname> for logical @@ -529,7 +534,7 @@ memory (e.g. allocated with <function>kmalloc()</function>). There's also </para></listitem> <listitem><para> -<varname>unsigned long addr</varname>: Required if the mapping is used. +<varname>phys_addr_t addr</varname>: Required if the mapping is used. Fill in the address of your memory block. This address is the one that appears in sysfs. </para></listitem> @@ -553,7 +558,7 @@ instead to remember such an address. </itemizedlist> <para> -Please do not touch the <varname>kobj</varname> element of +Please do not touch the <varname>map</varname> element of <varname>struct uio_mem</varname>! It is used by the UIO framework to set up sysfs files for this mapping. Simply leave it alone. </para> diff --git a/Documentation/DocBook/v4l/bayer.pdf b/Documentation/DocBook/v4l/bayer.pdf Binary files differdeleted file mode 100644 index 905e60e..0000000 --- a/Documentation/DocBook/v4l/bayer.pdf +++ /dev/null diff --git a/Documentation/DocBook/v4l/bayer.png b/Documentation/DocBook/v4l/bayer.png Binary files differdeleted file mode 100644 index 9b15fb2..0000000 --- a/Documentation/DocBook/v4l/bayer.png +++ /dev/null diff --git a/Documentation/DocBook/v4l/crop.gif b/Documentation/DocBook/v4l/crop.gif Binary files differdeleted file mode 100644 index 3b9e7d8..0000000 --- a/Documentation/DocBook/v4l/crop.gif +++ /dev/null diff --git a/Documentation/DocBook/v4l/dev-event.xml b/Documentation/DocBook/v4l/dev-event.xml deleted file mode 100644 index be5a98f..0000000 --- a/Documentation/DocBook/v4l/dev-event.xml +++ /dev/null @@ -1,31 +0,0 @@ - <title>Event Interface</title> - - <para>The V4L2 event interface provides means for user to get - immediately notified on certain conditions taking place on a device. - This might include start of frame or loss of signal events, for - example. - </para> - - <para>To receive events, the events the user is interested in first must - be subscribed using the &VIDIOC-SUBSCRIBE-EVENT; ioctl. Once an event is - subscribed, the events of subscribed types are dequeueable using the - &VIDIOC-DQEVENT; ioctl. Events may be unsubscribed using - VIDIOC_UNSUBSCRIBE_EVENT ioctl. The special event type V4L2_EVENT_ALL may - be used to unsubscribe all the events the driver supports.</para> - - <para>The event subscriptions and event queues are specific to file - handles. Subscribing an event on one file handle does not affect - other file handles. - </para> - - <para>The information on dequeueable events is obtained by using select or - poll system calls on video devices. The V4L2 events use POLLPRI events on - poll system call and exceptions on select system call. </para> - - <!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: - --> diff --git a/Documentation/DocBook/v4l/fieldseq_bt.gif b/Documentation/DocBook/v4l/fieldseq_bt.gif Binary files differdeleted file mode 100644 index 60e8569..0000000 --- a/Documentation/DocBook/v4l/fieldseq_bt.gif +++ /dev/null diff --git a/Documentation/DocBook/v4l/fieldseq_tb.gif b/Documentation/DocBook/v4l/fieldseq_tb.gif Binary files differdeleted file mode 100644 index 718492f..0000000 --- a/Documentation/DocBook/v4l/fieldseq_tb.gif +++ /dev/null diff --git a/Documentation/DocBook/v4l/func-ioctl.xml b/Documentation/DocBook/v4l/func-ioctl.xml deleted file mode 100644 index b60fd37..0000000 --- a/Documentation/DocBook/v4l/func-ioctl.xml +++ /dev/null @@ -1,145 +0,0 @@ -<refentry id="func-ioctl"> - <refmeta> - <refentrytitle>V4L2 ioctl()</refentrytitle> - &manvol; - </refmeta> - - <refnamediv> - <refname>v4l2-ioctl</refname> - <refpurpose>Program a V4L2 device</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <funcsynopsis> - <funcsynopsisinfo>#include <sys/ioctl.h></funcsynopsisinfo> - <funcprototype> - <funcdef>int <function>ioctl</function></funcdef> - <paramdef>int <parameter>fd</parameter></paramdef> - <paramdef>int <parameter>request</parameter></paramdef> - <paramdef>void *<parameter>argp</parameter></paramdef> - </funcprototype> - </funcsynopsis> - </refsynopsisdiv> - - <refsect1> - <title>Arguments</title> - - <variablelist> - <varlistentry> - <term><parameter>fd</parameter></term> - <listitem> - <para>&fd;</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>request</parameter></term> - <listitem> - <para>V4L2 ioctl request code as defined in the <filename>videodev2.h</filename> header file, for example -VIDIOC_QUERYCAP.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>argp</parameter></term> - <listitem> - <para>Pointer to a function parameter, usually a structure.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Description</title> - - <para>The <function>ioctl()</function> function is used to program -V4L2 devices. The argument <parameter>fd</parameter> must be an open -file descriptor. An ioctl <parameter>request</parameter> has encoded -in it whether the argument is an input, output or read/write -parameter, and the size of the argument <parameter>argp</parameter> in -bytes. Macros and defines specifying V4L2 ioctl requests are located -in the <filename>videodev2.h</filename> header file. -Applications should use their own copy, not include the version in the -kernel sources on the system they compile on. All V4L2 ioctl requests, -their respective function and parameters are specified in <xref - linkend="user-func" />.</para> - </refsect1> - - <refsect1> - <title>Return Value</title> - - <para>On success the <function>ioctl()</function> function returns -<returnvalue>0</returnvalue> and does not reset the -<varname>errno</varname> variable. On failure -<returnvalue>-1</returnvalue> is returned, when the ioctl takes an -output or read/write parameter it remains unmodified, and the -<varname>errno</varname> variable is set appropriately. See below for -possible error codes. Generic errors like <errorcode>EBADF</errorcode> -or <errorcode>EFAULT</errorcode> are not listed in the sections -discussing individual ioctl requests.</para> - <para>Note ioctls may return undefined error codes. Since errors -may have side effects such as a driver reset applications should -abort on unexpected errors.</para> - - <variablelist> - <varlistentry> - <term><errorcode>EBADF</errorcode></term> - <listitem> - <para><parameter>fd</parameter> is not a valid open file -descriptor.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EBUSY</errorcode></term> - <listitem> - <para>The property cannot be changed right now. Typically -this error code is returned when I/O is in progress or the driver -supports multiple opens and another process locked the property.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EFAULT</errorcode></term> - <listitem> - <para><parameter>argp</parameter> references an inaccessible -memory area.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>ENOTTY</errorcode></term> - <listitem> - <para><parameter>fd</parameter> is not associated with a -character special device.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>The <parameter>request</parameter> or the data pointed -to by <parameter>argp</parameter> is not valid. This is a very common -error code, see the individual ioctl requests listed in <xref - linkend="user-func" /> for actual causes.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>ENOMEM</errorcode></term> - <listitem> - <para>Not enough physical or virtual memory was available to -complete the request.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>ERANGE</errorcode></term> - <listitem> - <para>The application attempted to set a control with the -&VIDIOC-S-CTRL; ioctl to a value which is out of bounds.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> -</refentry> - -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/nv12mt.gif b/Documentation/DocBook/v4l/nv12mt.gif Binary files differdeleted file mode 100644 index ef2d4cf..0000000 --- a/Documentation/DocBook/v4l/nv12mt.gif +++ /dev/null diff --git a/Documentation/DocBook/v4l/nv12mt_example.gif b/Documentation/DocBook/v4l/nv12mt_example.gif Binary files differdeleted file mode 100644 index df81d68..0000000 --- a/Documentation/DocBook/v4l/nv12mt_example.gif +++ /dev/null diff --git a/Documentation/DocBook/v4l/pipeline.png b/Documentation/DocBook/v4l/pipeline.png Binary files differdeleted file mode 100644 index f19b86c..0000000 --- a/Documentation/DocBook/v4l/pipeline.png +++ /dev/null diff --git a/Documentation/DocBook/v4l/vbi_525.gif b/Documentation/DocBook/v4l/vbi_525.gif Binary files differdeleted file mode 100644 index 5580b69..0000000 --- a/Documentation/DocBook/v4l/vbi_525.gif +++ /dev/null diff --git a/Documentation/DocBook/v4l/vbi_625.gif b/Documentation/DocBook/v4l/vbi_625.gif Binary files differdeleted file mode 100644 index 34e3251..0000000 --- a/Documentation/DocBook/v4l/vbi_625.gif +++ /dev/null diff --git a/Documentation/DocBook/v4l/vbi_hsync.gif b/Documentation/DocBook/v4l/vbi_hsync.gif Binary files differdeleted file mode 100644 index b02434d..0000000 --- a/Documentation/DocBook/v4l/vbi_hsync.gif +++ /dev/null diff --git a/Documentation/DocBook/v4l/videodev2.h.xml b/Documentation/DocBook/v4l/videodev2.h.xml deleted file mode 100644 index c50536a..0000000 --- a/Documentation/DocBook/v4l/videodev2.h.xml +++ /dev/null @@ -1,1946 +0,0 @@ -<programlisting> -/* - * Video for Linux Two header file - * - * Copyright (C) 1999-2007 the contributors - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * Alternatively you can redistribute this file under the terms of the - * BSD license as stated below: - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. The names of its contributors may not be used to endorse or promote - * products derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED - * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Header file for v4l or V4L2 drivers and applications - * with public API. - * All kernel-specific stuff were moved to media/v4l2-dev.h, so - * no #if __KERNEL tests are allowed here - * - * See http://linuxtv.org for more info - * - * Author: Bill Dirks <bill@thedirks.org> - * Justin Schoeman - * Hans Verkuil <hverkuil@xs4all.nl> - * et al. - */ -#ifndef __LINUX_VIDEODEV2_H -#define __LINUX_VIDEODEV2_H - -#ifdef __KERNEL__ -#include <linux/time.h> /* need struct timeval */ -#else -#include <sys/time.h> -#endif -#include <linux/compiler.h> -#include <linux/ioctl.h> -#include <linux/types.h> - -/* - * Common stuff for both V4L1 and V4L2 - * Moved from videodev.h - */ -#define VIDEO_MAX_FRAME 32 -#define VIDEO_MAX_PLANES 8 - -#ifndef __KERNEL__ - -/* These defines are V4L1 specific and should not be used with the V4L2 API! - They will be removed from this header in the future. */ - -#define VID_TYPE_CAPTURE 1 /* Can capture */ -#define VID_TYPE_TUNER 2 /* Can tune */ -#define VID_TYPE_TELETEXT 4 /* Does teletext */ -#define VID_TYPE_OVERLAY 8 /* Overlay onto frame buffer */ -#define VID_TYPE_CHROMAKEY 16 /* Overlay by chromakey */ -#define VID_TYPE_CLIPPING 32 /* Can clip */ -#define VID_TYPE_FRAMERAM 64 /* Uses the frame buffer memory */ -#define VID_TYPE_SCALES 128 /* Scalable */ -#define VID_TYPE_MONOCHROME 256 /* Monochrome only */ -#define VID_TYPE_SUBCAPTURE 512 /* Can capture subareas of the image */ -#define VID_TYPE_MPEG_DECODER 1024 /* Can decode MPEG streams */ -#define VID_TYPE_MPEG_ENCODER 2048 /* Can encode MPEG streams */ -#define VID_TYPE_MJPEG_DECODER 4096 /* Can decode MJPEG streams */ -#define VID_TYPE_MJPEG_ENCODER 8192 /* Can encode MJPEG streams */ -#endif - -/* - * M I S C E L L A N E O U S - */ - -/* Four-character-code (FOURCC) */ -#define v4l2_fourcc(a, b, c, d)\ - ((__u32)(a) | ((__u32)(b) << 8) | ((__u32)(c) << 16) | ((__u32)(d) << 24)) - -/* - * E N U M S - */ -enum <link linkend="v4l2-field">v4l2_field</link> { - V4L2_FIELD_ANY = 0, /* driver can choose from none, - top, bottom, interlaced - depending on whatever it thinks - is approximate ... */ - V4L2_FIELD_NONE = 1, /* this device has no fields ... */ - V4L2_FIELD_TOP = 2, /* top field only */ - V4L2_FIELD_BOTTOM = 3, /* bottom field only */ - V4L2_FIELD_INTERLACED = 4, /* both fields interlaced */ - V4L2_FIELD_SEQ_TB = 5, /* both fields sequential into one - buffer, top-bottom order */ - V4L2_FIELD_SEQ_BT = 6, /* same as above + bottom-top order */ - V4L2_FIELD_ALTERNATE = 7, /* both fields alternating into - separate buffers */ - V4L2_FIELD_INTERLACED_TB = 8, /* both fields interlaced, top field - first and the top field is - transmitted first */ - V4L2_FIELD_INTERLACED_BT = 9, /* both fields interlaced, top field - first and the bottom field is - transmitted first */ -}; -#define V4L2_FIELD_HAS_TOP(field) \ - ((field) == V4L2_FIELD_TOP ||\ - (field) == V4L2_FIELD_INTERLACED ||\ - (field) == V4L2_FIELD_INTERLACED_TB ||\ - (field) == V4L2_FIELD_INTERLACED_BT ||\ - (field) == V4L2_FIELD_SEQ_TB ||\ - (field) == V4L2_FIELD_SEQ_BT) -#define V4L2_FIELD_HAS_BOTTOM(field) \ - ((field) == V4L2_FIELD_BOTTOM ||\ - (field) == V4L2_FIELD_INTERLACED ||\ - (field) == V4L2_FIELD_INTERLACED_TB ||\ - (field) == V4L2_FIELD_INTERLACED_BT ||\ - (field) == V4L2_FIELD_SEQ_TB ||\ - (field) == V4L2_FIELD_SEQ_BT) -#define V4L2_FIELD_HAS_BOTH(field) \ - ((field) == V4L2_FIELD_INTERLACED ||\ - (field) == V4L2_FIELD_INTERLACED_TB ||\ - (field) == V4L2_FIELD_INTERLACED_BT ||\ - (field) == V4L2_FIELD_SEQ_TB ||\ - (field) == V4L2_FIELD_SEQ_BT) - -enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> { - V4L2_BUF_TYPE_VIDEO_CAPTURE = 1, - V4L2_BUF_TYPE_VIDEO_OUTPUT = 2, - V4L2_BUF_TYPE_VIDEO_OVERLAY = 3, - V4L2_BUF_TYPE_VBI_CAPTURE = 4, - V4L2_BUF_TYPE_VBI_OUTPUT = 5, - V4L2_BUF_TYPE_SLICED_VBI_CAPTURE = 6, - V4L2_BUF_TYPE_SLICED_VBI_OUTPUT = 7, -#if 1 - /* Experimental */ - V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY = 8, -#endif - V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE = 9, - V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE = 10, - V4L2_BUF_TYPE_PRIVATE = 0x80, -}; - -#define V4L2_TYPE_IS_MULTIPLANAR(type) \ - ((type) == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE \ - || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) - -#define V4L2_TYPE_IS_OUTPUT(type) \ - ((type) == V4L2_BUF_TYPE_VIDEO_OUTPUT \ - || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE \ - || (type) == V4L2_BUF_TYPE_VIDEO_OVERLAY \ - || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY \ - || (type) == V4L2_BUF_TYPE_VBI_OUTPUT \ - || (type) == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) - -enum <link linkend="v4l2-tuner-type">v4l2_tuner_type</link> { - V4L2_TUNER_RADIO = 1, - V4L2_TUNER_ANALOG_TV = 2, - V4L2_TUNER_DIGITAL_TV = 3, -}; - -enum <link linkend="v4l2-memory">v4l2_memory</link> { - V4L2_MEMORY_MMAP = 1, - V4L2_MEMORY_USERPTR = 2, - V4L2_MEMORY_OVERLAY = 3, -}; - -/* see also http://vektor.theorem.ca/graphics/ycbcr/ */ -enum <link linkend="v4l2-colorspace">v4l2_colorspace</link> { - /* ITU-R 601 -- broadcast NTSC/PAL */ - V4L2_COLORSPACE_SMPTE170M = 1, - - /* 1125-Line (US) HDTV */ - V4L2_COLORSPACE_SMPTE240M = 2, - - /* HD and modern captures. */ - V4L2_COLORSPACE_REC709 = 3, - - /* broken BT878 extents (601, luma range 16-253 instead of 16-235) */ - V4L2_COLORSPACE_BT878 = 4, - - /* These should be useful. Assume 601 extents. */ - V4L2_COLORSPACE_470_SYSTEM_M = 5, - V4L2_COLORSPACE_470_SYSTEM_BG = 6, - - /* I know there will be cameras that send this. So, this is - * unspecified chromaticities and full 0-255 on each of the - * Y'CbCr components - */ - V4L2_COLORSPACE_JPEG = 7, - - /* For RGB colourspaces, this is probably a good start. */ - V4L2_COLORSPACE_SRGB = 8, -}; - -enum <link linkend="v4l2-priority">v4l2_priority</link> { - V4L2_PRIORITY_UNSET = 0, /* not initialized */ - V4L2_PRIORITY_BACKGROUND = 1, - V4L2_PRIORITY_INTERACTIVE = 2, - V4L2_PRIORITY_RECORD = 3, - V4L2_PRIORITY_DEFAULT = V4L2_PRIORITY_INTERACTIVE, -}; - -struct <link linkend="v4l2-rect">v4l2_rect</link> { - __s32 left; - __s32 top; - __s32 width; - __s32 height; -}; - -struct <link linkend="v4l2-fract">v4l2_fract</link> { - __u32 numerator; - __u32 denominator; -}; - -/* - * D R I V E R C A P A B I L I T I E S - */ -struct <link linkend="v4l2-capability">v4l2_capability</link> { - __u8 driver[16]; /* i.e.ie; "bttv" */ - __u8 card[32]; /* i.e.ie; "Hauppauge WinTV" */ - __u8 bus_info[32]; /* "PCI:" + pci_name(pci_dev) */ - __u32 version; /* should use KERNEL_VERSION() */ - __u32 capabilities; /* Device capabilities */ - __u32 reserved[4]; -}; - -/* Values for 'capabilities' field */ -#define V4L2_CAP_VIDEO_CAPTURE 0x00000001 /* Is a video capture device */ -#define V4L2_CAP_VIDEO_OUTPUT 0x00000002 /* Is a video output device */ -#define V4L2_CAP_VIDEO_OVERLAY 0x00000004 /* Can do video overlay */ -#define V4L2_CAP_VBI_CAPTURE 0x00000010 /* Is a raw VBI capture device */ -#define V4L2_CAP_VBI_OUTPUT 0x00000020 /* Is a raw VBI output device */ -#define V4L2_CAP_SLICED_VBI_CAPTURE 0x00000040 /* Is a sliced VBI capture device */ -#define V4L2_CAP_SLICED_VBI_OUTPUT 0x00000080 /* Is a sliced VBI output device */ -#define V4L2_CAP_RDS_CAPTURE 0x00000100 /* RDS data capture */ -#define V4L2_CAP_VIDEO_OUTPUT_OVERLAY 0x00000200 /* Can do video output overlay */ -#define V4L2_CAP_HW_FREQ_SEEK 0x00000400 /* Can do hardware frequency seek */ -#define V4L2_CAP_RDS_OUTPUT 0x00000800 /* Is an RDS encoder */ - -/* Is a video capture device that supports multiplanar formats */ -#define V4L2_CAP_VIDEO_CAPTURE_MPLANE 0x00001000 -/* Is a video output device that supports multiplanar formats */ -#define V4L2_CAP_VIDEO_OUTPUT_MPLANE 0x00002000 - -#define V4L2_CAP_TUNER 0x00010000 /* has a tuner */ -#define V4L2_CAP_AUDIO 0x00020000 /* has audio support */ -#define V4L2_CAP_RADIO 0x00040000 /* is a radio device */ -#define V4L2_CAP_MODULATOR 0x00080000 /* has a modulator */ - -#define V4L2_CAP_READWRITE 0x01000000 /* read/write systemcalls */ -#define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */ -#define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */ - -/* - * V I D E O I M A G E F O R M A T - */ -struct <link linkend="v4l2-pix-format">v4l2_pix_format</link> { - __u32 width; - __u32 height; - __u32 pixelformat; - enum <link linkend="v4l2-field">v4l2_field</link> field; - __u32 bytesperline; /* for padding, zero if unused */ - __u32 sizeimage; - enum <link linkend="v4l2-colorspace">v4l2_colorspace</link> colorspace; - __u32 priv; /* private data, depends on pixelformat */ -}; - -/* Pixel format FOURCC depth Description */ - -/* RGB formats */ -#define <link linkend="V4L2-PIX-FMT-RGB332">V4L2_PIX_FMT_RGB332</link> v4l2_fourcc('R', 'G', 'B', '1') /* 8 RGB-3-3-2 */ -#define <link linkend="V4L2-PIX-FMT-RGB444">V4L2_PIX_FMT_RGB444</link> v4l2_fourcc('R', '4', '4', '4') /* 16 xxxxrrrr ggggbbbb */ -#define <link linkend="V4L2-PIX-FMT-RGB555">V4L2_PIX_FMT_RGB555</link> v4l2_fourcc('R', 'G', 'B', 'O') /* 16 RGB-5-5-5 */ -#define <link linkend="V4L2-PIX-FMT-RGB565">V4L2_PIX_FMT_RGB565</link> v4l2_fourcc('R', 'G', 'B', 'P') /* 16 RGB-5-6-5 */ -#define <link linkend="V4L2-PIX-FMT-RGB555X">V4L2_PIX_FMT_RGB555X</link> v4l2_fourcc('R', 'G', 'B', 'Q') /* 16 RGB-5-5-5 BE */ -#define <link linkend="V4L2-PIX-FMT-RGB565X">V4L2_PIX_FMT_RGB565X</link> v4l2_fourcc('R', 'G', 'B', 'R') /* 16 RGB-5-6-5 BE */ -#define <link linkend="V4L2-PIX-FMT-BGR666">V4L2_PIX_FMT_BGR666</link> v4l2_fourcc('B', 'G', 'R', 'H') /* 18 BGR-6-6-6 */ -#define <link linkend="V4L2-PIX-FMT-BGR24">V4L2_PIX_FMT_BGR24</link> v4l2_fourcc('B', 'G', 'R', '3') /* 24 BGR-8-8-8 */ -#define <link linkend="V4L2-PIX-FMT-RGB24">V4L2_PIX_FMT_RGB24</link> v4l2_fourcc('R', 'G', 'B', '3') /* 24 RGB-8-8-8 */ -#define <link linkend="V4L2-PIX-FMT-BGR32">V4L2_PIX_FMT_BGR32</link> v4l2_fourcc('B', 'G', 'R', '4') /* 32 BGR-8-8-8-8 */ -#define <link linkend="V4L2-PIX-FMT-RGB32">V4L2_PIX_FMT_RGB32</link> v4l2_fourcc('R', 'G', 'B', '4') /* 32 RGB-8-8-8-8 */ - -/* Grey formats */ -#define <link linkend="V4L2-PIX-FMT-GREY">V4L2_PIX_FMT_GREY</link> v4l2_fourcc('G', 'R', 'E', 'Y') /* 8 Greyscale */ -#define <link linkend="V4L2-PIX-FMT-Y4">V4L2_PIX_FMT_Y4</link> v4l2_fourcc('Y', '0', '4', ' ') /* 4 Greyscale */ -#define <link linkend="V4L2-PIX-FMT-Y6">V4L2_PIX_FMT_Y6</link> v4l2_fourcc('Y', '0', '6', ' ') /* 6 Greyscale */ -#define <link linkend="V4L2-PIX-FMT-Y10">V4L2_PIX_FMT_Y10</link> v4l2_fourcc('Y', '1', '0', ' ') /* 10 Greyscale */ -#define <link linkend="V4L2-PIX-FMT-Y16">V4L2_PIX_FMT_Y16</link> v4l2_fourcc('Y', '1', '6', ' ') /* 16 Greyscale */ - -/* Grey bit-packed formats */ -#define <link linkend="V4L2-PIX-FMT-Y10BPACK">V4L2_PIX_FMT_Y10BPACK</link> v4l2_fourcc('Y', '1', '0', 'B') /* 10 Greyscale bit-packed */ - -/* Palette formats */ -#define <link linkend="V4L2-PIX-FMT-PAL8">V4L2_PIX_FMT_PAL8</link> v4l2_fourcc('P', 'A', 'L', '8') /* 8 8-bit palette */ - -/* Luminance+Chrominance formats */ -#define <link linkend="V4L2-PIX-FMT-YVU410">V4L2_PIX_FMT_YVU410</link> v4l2_fourcc('Y', 'V', 'U', '9') /* 9 YVU 4:1:0 */ -#define <link linkend="V4L2-PIX-FMT-YVU420">V4L2_PIX_FMT_YVU420</link> v4l2_fourcc('Y', 'V', '1', '2') /* 12 YVU 4:2:0 */ -#define <link linkend="V4L2-PIX-FMT-YUYV">V4L2_PIX_FMT_YUYV</link> v4l2_fourcc('Y', 'U', 'Y', 'V') /* 16 YUV 4:2:2 */ -#define <link linkend="V4L2-PIX-FMT-YYUV">V4L2_PIX_FMT_YYUV</link> v4l2_fourcc('Y', 'Y', 'U', 'V') /* 16 YUV 4:2:2 */ -#define <link linkend="V4L2-PIX-FMT-YVYU">V4L2_PIX_FMT_YVYU</link> v4l2_fourcc('Y', 'V', 'Y', 'U') /* 16 YVU 4:2:2 */ -#define <link linkend="V4L2-PIX-FMT-UYVY">V4L2_PIX_FMT_UYVY</link> v4l2_fourcc('U', 'Y', 'V', 'Y') /* 16 YUV 4:2:2 */ -#define <link linkend="V4L2-PIX-FMT-VYUY">V4L2_PIX_FMT_VYUY</link> v4l2_fourcc('V', 'Y', 'U', 'Y') /* 16 YUV 4:2:2 */ -#define <link linkend="V4L2-PIX-FMT-YUV422P">V4L2_PIX_FMT_YUV422P</link> v4l2_fourcc('4', '2', '2', 'P') /* 16 YVU422 planar */ -#define <link linkend="V4L2-PIX-FMT-YUV411P">V4L2_PIX_FMT_YUV411P</link> v4l2_fourcc('4', '1', '1', 'P') /* 16 YVU411 planar */ -#define <link linkend="V4L2-PIX-FMT-Y41P">V4L2_PIX_FMT_Y41P</link> v4l2_fourcc('Y', '4', '1', 'P') /* 12 YUV 4:1:1 */ -#define <link linkend="V4L2-PIX-FMT-YUV444">V4L2_PIX_FMT_YUV444</link> v4l2_fourcc('Y', '4', '4', '4') /* 16 xxxxyyyy uuuuvvvv */ -#define <link linkend="V4L2-PIX-FMT-YUV555">V4L2_PIX_FMT_YUV555</link> v4l2_fourcc('Y', 'U', 'V', 'O') /* 16 YUV-5-5-5 */ -#define <link linkend="V4L2-PIX-FMT-YUV565">V4L2_PIX_FMT_YUV565</link> v4l2_fourcc('Y', 'U', 'V', 'P') /* 16 YUV-5-6-5 */ -#define <link linkend="V4L2-PIX-FMT-YUV32">V4L2_PIX_FMT_YUV32</link> v4l2_fourcc('Y', 'U', 'V', '4') /* 32 YUV-8-8-8-8 */ -#define <link linkend="V4L2-PIX-FMT-YUV410">V4L2_PIX_FMT_YUV410</link> v4l2_fourcc('Y', 'U', 'V', '9') /* 9 YUV 4:1:0 */ -#define <link linkend="V4L2-PIX-FMT-YUV420">V4L2_PIX_FMT_YUV420</link> v4l2_fourcc('Y', 'U', '1', '2') /* 12 YUV 4:2:0 */ -#define <link linkend="V4L2-PIX-FMT-HI240">V4L2_PIX_FMT_HI240</link> v4l2_fourcc('H', 'I', '2', '4') /* 8 8-bit color */ -#define <link linkend="V4L2-PIX-FMT-HM12">V4L2_PIX_FMT_HM12</link> v4l2_fourcc('H', 'M', '1', '2') /* 8 YUV 4:2:0 16x16 macroblocks */ -#define <link linkend="V4L2-PIX-FMT-M420">V4L2_PIX_FMT_M420</link> v4l2_fourcc('M', '4', '2', '0') /* 12 YUV 4:2:0 2 lines y, 1 line uv interleaved */ - -/* two planes -- one Y, one Cr + Cb interleaved */ -#define <link linkend="V4L2-PIX-FMT-NV12">V4L2_PIX_FMT_NV12</link> v4l2_fourcc('N', 'V', '1', '2') /* 12 Y/CbCr 4:2:0 */ -#define <link linkend="V4L2-PIX-FMT-NV21">V4L2_PIX_FMT_NV21</link> v4l2_fourcc('N', 'V', '2', '1') /* 12 Y/CrCb 4:2:0 */ -#define <link linkend="V4L2-PIX-FMT-NV16">V4L2_PIX_FMT_NV16</link> v4l2_fourcc('N', 'V', '1', '6') /* 16 Y/CbCr 4:2:2 */ -#define <link linkend="V4L2-PIX-FMT-NV61">V4L2_PIX_FMT_NV61</link> v4l2_fourcc('N', 'V', '6', '1') /* 16 Y/CrCb 4:2:2 */ - -/* two non contiguous planes - one Y, one Cr + Cb interleaved */ -#define <link linkend="V4L2-PIX-FMT-NV12M">V4L2_PIX_FMT_NV12M</link> v4l2_fourcc('N', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 */ -#define <link linkend="V4L2-PIX-FMT-NV12MT">V4L2_PIX_FMT_NV12MT</link> v4l2_fourcc('T', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 64x32 macroblocks */ - -/* three non contiguous planes - Y, Cb, Cr */ -#define <link linkend="V4L2-PIX-FMT-YUV420M">V4L2_PIX_FMT_YUV420M</link> v4l2_fourcc('Y', 'M', '1', '2') /* 12 YUV420 planar */ - -/* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */ -#define <link linkend="V4L2-PIX-FMT-SBGGR8">V4L2_PIX_FMT_SBGGR8</link> v4l2_fourcc('B', 'A', '8', '1') /* 8 BGBG.. GRGR.. */ -#define <link linkend="V4L2-PIX-FMT-SGBRG8">V4L2_PIX_FMT_SGBRG8</link> v4l2_fourcc('G', 'B', 'R', 'G') /* 8 GBGB.. RGRG.. */ -#define <link linkend="V4L2-PIX-FMT-SGRBG8">V4L2_PIX_FMT_SGRBG8</link> v4l2_fourcc('G', 'R', 'B', 'G') /* 8 GRGR.. BGBG.. */ -#define <link linkend="V4L2-PIX-FMT-SRGGB8">V4L2_PIX_FMT_SRGGB8</link> v4l2_fourcc('R', 'G', 'G', 'B') /* 8 RGRG.. GBGB.. */ -#define <link linkend="V4L2-PIX-FMT-SBGGR10">V4L2_PIX_FMT_SBGGR10</link> v4l2_fourcc('B', 'G', '1', '0') /* 10 BGBG.. GRGR.. */ -#define <link linkend="V4L2-PIX-FMT-SGBRG10">V4L2_PIX_FMT_SGBRG10</link> v4l2_fourcc('G', 'B', '1', '0') /* 10 GBGB.. RGRG.. */ -#define <link linkend="V4L2-PIX-FMT-SGRBG10">V4L2_PIX_FMT_SGRBG10</link> v4l2_fourcc('B', 'A', '1', '0') /* 10 GRGR.. BGBG.. */ -#define <link linkend="V4L2-PIX-FMT-SRGGB10">V4L2_PIX_FMT_SRGGB10</link> v4l2_fourcc('R', 'G', '1', '0') /* 10 RGRG.. GBGB.. */ - /* 10bit raw bayer DPCM compressed to 8 bits */ -#define <link linkend="V4L2-PIX-FMT-SGRBG10DPCM8">V4L2_PIX_FMT_SGRBG10DPCM8</link> v4l2_fourcc('B', 'D', '1', '0') - /* - * 10bit raw bayer, expanded to 16 bits - * xxxxrrrrrrrrrrxxxxgggggggggg xxxxggggggggggxxxxbbbbbbbbbb... - */ -#define <link linkend="V4L2-PIX-FMT-SBGGR16">V4L2_PIX_FMT_SBGGR16</link> v4l2_fourcc('B', 'Y', 'R', '2') /* 16 BGBG.. GRGR.. */ - -/* compressed formats */ -#define <link linkend="V4L2-PIX-FMT-MJPEG">V4L2_PIX_FMT_MJPEG</link> v4l2_fourcc('M', 'J', 'P', 'G') /* Motion-JPEG */ -#define <link linkend="V4L2-PIX-FMT-JPEG">V4L2_PIX_FMT_JPEG</link> v4l2_fourcc('J', 'P', 'E', 'G') /* JFIF JPEG */ -#define <link linkend="V4L2-PIX-FMT-DV">V4L2_PIX_FMT_DV</link> v4l2_fourcc('d', 'v', 's', 'd') /* 1394 */ -#define <link linkend="V4L2-PIX-FMT-MPEG">V4L2_PIX_FMT_MPEG</link> v4l2_fourcc('M', 'P', 'E', 'G') /* MPEG-1/2/4 */ - -/* Vendor-specific formats */ -#define <link linkend="V4L2-PIX-FMT-CPIA1">V4L2_PIX_FMT_CPIA1</link> v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */ -#define <link linkend="V4L2-PIX-FMT-WNVA">V4L2_PIX_FMT_WNVA</link> v4l2_fourcc('W', 'N', 'V', 'A') /* Winnov hw compress */ -#define <link linkend="V4L2-PIX-FMT-SN9C10X">V4L2_PIX_FMT_SN9C10X</link> v4l2_fourcc('S', '9', '1', '0') /* SN9C10x compression */ -#define <link linkend="V4L2-PIX-FMT-SN9C20X-I420">V4L2_PIX_FMT_SN9C20X_I420</link> v4l2_fourcc('S', '9', '2', '0') /* SN9C20x YUV 4:2:0 */ -#define <link linkend="V4L2-PIX-FMT-PWC1">V4L2_PIX_FMT_PWC1</link> v4l2_fourcc('P', 'W', 'C', '1') /* pwc older webcam */ -#define <link linkend="V4L2-PIX-FMT-PWC2">V4L2_PIX_FMT_PWC2</link> v4l2_fourcc('P', 'W', 'C', '2') /* pwc newer webcam */ -#define <link linkend="V4L2-PIX-FMT-ET61X251">V4L2_PIX_FMT_ET61X251</link> v4l2_fourcc('E', '6', '2', '5') /* ET61X251 compression */ -#define <link linkend="V4L2-PIX-FMT-SPCA501">V4L2_PIX_FMT_SPCA501</link> v4l2_fourcc('S', '5', '0', '1') /* YUYV per line */ -#define <link linkend="V4L2-PIX-FMT-SPCA505">V4L2_PIX_FMT_SPCA505</link> v4l2_fourcc('S', '5', '0', '5') /* YYUV per line */ -#define <link linkend="V4L2-PIX-FMT-SPCA508">V4L2_PIX_FMT_SPCA508</link> v4l2_fourcc('S', '5', '0', '8') /* YUVY per line */ -#define <link linkend="V4L2-PIX-FMT-SPCA561">V4L2_PIX_FMT_SPCA561</link> v4l2_fourcc('S', '5', '6', '1') /* compressed GBRG bayer */ -#define <link linkend="V4L2-PIX-FMT-PAC207">V4L2_PIX_FMT_PAC207</link> v4l2_fourcc('P', '2', '0', '7') /* compressed BGGR bayer */ -#define <link linkend="V4L2-PIX-FMT-MR97310A">V4L2_PIX_FMT_MR97310A</link> v4l2_fourcc('M', '3', '1', '0') /* compressed BGGR bayer */ -#define <link linkend="V4L2-PIX-FMT-SN9C2028">V4L2_PIX_FMT_SN9C2028</link> v4l2_fourcc('S', 'O', 'N', 'X') /* compressed GBRG bayer */ -#define <link linkend="V4L2-PIX-FMT-SQ905C">V4L2_PIX_FMT_SQ905C</link> v4l2_fourcc('9', '0', '5', 'C') /* compressed RGGB bayer */ -#define <link linkend="V4L2-PIX-FMT-PJPG">V4L2_PIX_FMT_PJPG</link> v4l2_fourcc('P', 'J', 'P', 'G') /* Pixart 73xx JPEG */ -#define <link linkend="V4L2-PIX-FMT-OV511">V4L2_PIX_FMT_OV511</link> v4l2_fourcc('O', '5', '1', '1') /* ov511 JPEG */ -#define <link linkend="V4L2-PIX-FMT-OV518">V4L2_PIX_FMT_OV518</link> v4l2_fourcc('O', '5', '1', '8') /* ov518 JPEG */ -#define <link linkend="V4L2-PIX-FMT-STV0680">V4L2_PIX_FMT_STV0680</link> v4l2_fourcc('S', '6', '8', '0') /* stv0680 bayer */ -#define <link linkend="V4L2-PIX-FMT-TM6000">V4L2_PIX_FMT_TM6000</link> v4l2_fourcc('T', 'M', '6', '0') /* tm5600/tm60x0 */ -#define <link linkend="V4L2-PIX-FMT-CIT-YYVYUY">V4L2_PIX_FMT_CIT_YYVYUY</link> v4l2_fourcc('C', 'I', 'T', 'V') /* one line of Y then 1 line of VYUY */ -#define <link linkend="V4L2-PIX-FMT-KONICA420">V4L2_PIX_FMT_KONICA420</link> v4l2_fourcc('K', 'O', 'N', 'I') /* YUV420 planar in blocks of 256 pixels */ - -/* - * F O R M A T E N U M E R A T I O N - */ -struct <link linkend="v4l2-fmtdesc">v4l2_fmtdesc</link> { - __u32 index; /* Format number */ - enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; /* buffer type */ - __u32 flags; - __u8 description[32]; /* Description string */ - __u32 pixelformat; /* Format fourcc */ - __u32 reserved[4]; -}; - -#define V4L2_FMT_FLAG_COMPRESSED 0x0001 -#define V4L2_FMT_FLAG_EMULATED 0x0002 - -#if 1 - /* Experimental Frame Size and frame rate enumeration */ -/* - * F R A M E S I Z E E N U M E R A T I O N - */ -enum <link linkend="v4l2-frmsizetypes">v4l2_frmsizetypes</link> { - V4L2_FRMSIZE_TYPE_DISCRETE = 1, - V4L2_FRMSIZE_TYPE_CONTINUOUS = 2, - V4L2_FRMSIZE_TYPE_STEPWISE = 3, -}; - -struct <link linkend="v4l2-frmsize-discrete">v4l2_frmsize_discrete</link> { - __u32 width; /* Frame width [pixel] */ - __u32 height; /* Frame height [pixel] */ -}; - -struct <link linkend="v4l2-frmsize-stepwise">v4l2_frmsize_stepwise</link> { - __u32 min_width; /* Minimum frame width [pixel] */ - __u32 max_width; /* Maximum frame width [pixel] */ - __u32 step_width; /* Frame width step size [pixel] */ - __u32 min_height; /* Minimum frame height [pixel] */ - __u32 max_height; /* Maximum frame height [pixel] */ - __u32 step_height; /* Frame height step size [pixel] */ -}; - -struct <link linkend="v4l2-frmsizeenum">v4l2_frmsizeenum</link> { - __u32 index; /* Frame size number */ - __u32 pixel_format; /* Pixel format */ - __u32 type; /* Frame size type the device supports. */ - - union { /* Frame size */ - struct <link linkend="v4l2-frmsize-discrete">v4l2_frmsize_discrete</link> discrete; - struct <link linkend="v4l2-frmsize-stepwise">v4l2_frmsize_stepwise</link> stepwise; - }; - - __u32 reserved[2]; /* Reserved space for future use */ -}; - -/* - * F R A M E R A T E E N U M E R A T I O N - */ -enum <link linkend="v4l2-frmivaltypes">v4l2_frmivaltypes</link> { - V4L2_FRMIVAL_TYPE_DISCRETE = 1, - V4L2_FRMIVAL_TYPE_CONTINUOUS = 2, - V4L2_FRMIVAL_TYPE_STEPWISE = 3, -}; - -struct <link linkend="v4l2-frmival-stepwise">v4l2_frmival_stepwise</link> { - struct <link linkend="v4l2-fract">v4l2_fract</link> min; /* Minimum frame interval [s] */ - struct <link linkend="v4l2-fract">v4l2_fract</link> max; /* Maximum frame interval [s] */ - struct <link linkend="v4l2-fract">v4l2_fract</link> step; /* Frame interval step size [s] */ -}; - -struct <link linkend="v4l2-frmivalenum">v4l2_frmivalenum</link> { - __u32 index; /* Frame format index */ - __u32 pixel_format; /* Pixel format */ - __u32 width; /* Frame width */ - __u32 height; /* Frame height */ - __u32 type; /* Frame interval type the device supports. */ - - union { /* Frame interval */ - struct <link linkend="v4l2-fract">v4l2_fract</link> discrete; - struct <link linkend="v4l2-frmival-stepwise">v4l2_frmival_stepwise</link> stepwise; - }; - - __u32 reserved[2]; /* Reserved space for future use */ -}; -#endif - -/* - * T I M E C O D E - */ -struct <link linkend="v4l2-timecode">v4l2_timecode</link> { - __u32 type; - __u32 flags; - __u8 frames; - __u8 seconds; - __u8 minutes; - __u8 hours; - __u8 userbits[4]; -}; - -/* Type */ -#define V4L2_TC_TYPE_24FPS 1 -#define V4L2_TC_TYPE_25FPS 2 -#define V4L2_TC_TYPE_30FPS 3 -#define V4L2_TC_TYPE_50FPS 4 -#define V4L2_TC_TYPE_60FPS 5 - -/* Flags */ -#define V4L2_TC_FLAG_DROPFRAME 0x0001 /* "drop-frame" mode */ -#define V4L2_TC_FLAG_COLORFRAME 0x0002 -#define V4L2_TC_USERBITS_field 0x000C -#define V4L2_TC_USERBITS_USERDEFINED 0x0000 -#define V4L2_TC_USERBITS_8BITCHARS 0x0008 -/* The above is based on SMPTE timecodes */ - -struct <link linkend="v4l2-jpegcompression">v4l2_jpegcompression</link> { - int quality; - - int APPn; /* Number of APP segment to be written, - * must be 0..15 */ - int APP_len; /* Length of data in JPEG APPn segment */ - char APP_data[60]; /* Data in the JPEG APPn segment. */ - - int COM_len; /* Length of data in JPEG COM segment */ - char COM_data[60]; /* Data in JPEG COM segment */ - - __u32 jpeg_markers; /* Which markers should go into the JPEG - * output. Unless you exactly know what - * you do, leave them untouched. - * Inluding less markers will make the - * resulting code smaller, but there will - * be fewer applications which can read it. - * The presence of the APP and COM marker - * is influenced by APP_len and COM_len - * ONLY, not by this property! */ - -#define V4L2_JPEG_MARKER_DHT (1<<3) /* Define Huffman Tables */ -#define V4L2_JPEG_MARKER_DQT (1<<4) /* Define Quantization Tables */ -#define V4L2_JPEG_MARKER_DRI (1<<5) /* Define Restart Interval */ -#define V4L2_JPEG_MARKER_COM (1<<6) /* Comment segment */ -#define V4L2_JPEG_MARKER_APP (1<<7) /* App segment, driver will - * allways use APP0 */ -}; - -/* - * M E M O R Y - M A P P I N G B U F F E R S - */ -struct <link linkend="v4l2-requestbuffers">v4l2_requestbuffers</link> { - __u32 count; - enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; - enum <link linkend="v4l2-memory">v4l2_memory</link> memory; - __u32 reserved[2]; -}; - -/** - * struct <link linkend="v4l2-plane">v4l2_plane</link> - plane info for multi-planar buffers - * @bytesused: number of bytes occupied by data in the plane (payload) - * @length: size of this plane (NOT the payload) in bytes - * @mem_offset: when memory in the associated struct <link linkend="v4l2-buffer">v4l2_buffer</link> is - * V4L2_MEMORY_MMAP, equals the offset from the start of - * the device memory for this plane (or is a "cookie" that - * should be passed to mmap() called on the video node) - * @userptr: when memory is V4L2_MEMORY_USERPTR, a userspace pointer - * pointing to this plane - * @data_offset: offset in the plane to the start of data; usually 0, - * unless there is a header in front of the data - * - * Multi-planar buffers consist of one or more planes, e.g. an YCbCr buffer - * with two planes can have one plane for Y, and another for interleaved CbCr - * components. Each plane can reside in a separate memory buffer, or even in - * a completely separate memory node (e.g. in embedded devices). - */ -struct <link linkend="v4l2-plane">v4l2_plane</link> { - __u32 bytesused; - __u32 length; - union { - __u32 mem_offset; - unsigned long userptr; - } m; - __u32 data_offset; - __u32 reserved[11]; -}; - -/** - * struct <link linkend="v4l2-buffer">v4l2_buffer</link> - video buffer info - * @index: id number of the buffer - * @type: buffer type (type == *_MPLANE for multiplanar buffers) - * @bytesused: number of bytes occupied by data in the buffer (payload); - * unused (set to 0) for multiplanar buffers - * @flags: buffer informational flags - * @field: field order of the image in the buffer - * @timestamp: frame timestamp - * @timecode: frame timecode - * @sequence: sequence count of this frame - * @memory: the method, in which the actual video data is passed - * @offset: for non-multiplanar buffers with memory == V4L2_MEMORY_MMAP; - * offset from the start of the device memory for this plane, - * (or a "cookie" that should be passed to mmap() as offset) - * @userptr: for non-multiplanar buffers with memory == V4L2_MEMORY_USERPTR; - * a userspace pointer pointing to this buffer - * @planes: for multiplanar buffers; userspace pointer to the array of plane - * info structs for this buffer - * @length: size in bytes of the buffer (NOT its payload) for single-plane - * buffers (when type != *_MPLANE); number of elements in the - * planes array for multi-plane buffers - * @input: input number from which the video data has has been captured - * - * Contains data exchanged by application and driver using one of the Streaming - * I/O methods. - */ -struct <link linkend="v4l2-buffer">v4l2_buffer</link> { - __u32 index; - enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; - __u32 bytesused; - __u32 flags; - enum <link linkend="v4l2-field">v4l2_field</link> field; - struct timeval timestamp; - struct <link linkend="v4l2-timecode">v4l2_timecode</link> timecode; - __u32 sequence; - - /* memory location */ - enum <link linkend="v4l2-memory">v4l2_memory</link> memory; - union { - __u32 offset; - unsigned long userptr; - struct <link linkend="v4l2-plane">v4l2_plane</link> *planes; - } m; - __u32 length; - __u32 input; - __u32 reserved; -}; - -/* Flags for 'flags' field */ -#define V4L2_BUF_FLAG_MAPPED 0x0001 /* Buffer is mapped (flag) */ -#define V4L2_BUF_FLAG_QUEUED 0x0002 /* Buffer is queued for processing */ -#define V4L2_BUF_FLAG_DONE 0x0004 /* Buffer is ready */ -#define V4L2_BUF_FLAG_KEYFRAME 0x0008 /* Image is a keyframe (I-frame) */ -#define V4L2_BUF_FLAG_PFRAME 0x0010 /* Image is a P-frame */ -#define V4L2_BUF_FLAG_BFRAME 0x0020 /* Image is a B-frame */ -/* Buffer is ready, but the data contained within is corrupted. */ -#define V4L2_BUF_FLAG_ERROR 0x0040 -#define V4L2_BUF_FLAG_TIMECODE 0x0100 /* timecode field is valid */ -#define V4L2_BUF_FLAG_INPUT 0x0200 /* input field is valid */ - -/* - * O V E R L A Y P R E V I E W - */ -struct <link linkend="v4l2-framebuffer">v4l2_framebuffer</link> { - __u32 capability; - __u32 flags; -/* FIXME: in theory we should pass something like PCI device + memory - * region + offset instead of some physical address */ - void *base; - struct <link linkend="v4l2-pix-format">v4l2_pix_format</link> fmt; -}; -/* Flags for the 'capability' field. Read only */ -#define V4L2_FBUF_CAP_EXTERNOVERLAY 0x0001 -#define V4L2_FBUF_CAP_CHROMAKEY 0x0002 -#define V4L2_FBUF_CAP_LIST_CLIPPING 0x0004 -#define V4L2_FBUF_CAP_BITMAP_CLIPPING 0x0008 -#define V4L2_FBUF_CAP_LOCAL_ALPHA 0x0010 -#define V4L2_FBUF_CAP_GLOBAL_ALPHA 0x0020 -#define V4L2_FBUF_CAP_LOCAL_INV_ALPHA 0x0040 -#define V4L2_FBUF_CAP_SRC_CHROMAKEY 0x0080 -/* Flags for the 'flags' field. */ -#define V4L2_FBUF_FLAG_PRIMARY 0x0001 -#define V4L2_FBUF_FLAG_OVERLAY 0x0002 -#define V4L2_FBUF_FLAG_CHROMAKEY 0x0004 -#define V4L2_FBUF_FLAG_LOCAL_ALPHA 0x0008 -#define V4L2_FBUF_FLAG_GLOBAL_ALPHA 0x0010 -#define V4L2_FBUF_FLAG_LOCAL_INV_ALPHA 0x0020 -#define V4L2_FBUF_FLAG_SRC_CHROMAKEY 0x0040 - -struct <link linkend="v4l2-clip">v4l2_clip</link> { - struct <link linkend="v4l2-rect">v4l2_rect</link> c; - struct <link linkend="v4l2-clip">v4l2_clip</link> __user *next; -}; - -struct <link linkend="v4l2-window">v4l2_window</link> { - struct <link linkend="v4l2-rect">v4l2_rect</link> w; - enum <link linkend="v4l2-field">v4l2_field</link> field; - __u32 chromakey; - struct <link linkend="v4l2-clip">v4l2_clip</link> __user *clips; - __u32 clipcount; - void __user *bitmap; - __u8 global_alpha; -}; - -/* - * C A P T U R E P A R A M E T E R S - */ -struct <link linkend="v4l2-captureparm">v4l2_captureparm</link> { - __u32 capability; /* Supported modes */ - __u32 capturemode; /* Current mode */ - struct <link linkend="v4l2-fract">v4l2_fract</link> timeperframe; /* Time per frame in .1us units */ - __u32 extendedmode; /* Driver-specific extensions */ - __u32 readbuffers; /* # of buffers for read */ - __u32 reserved[4]; -}; - -/* Flags for 'capability' and 'capturemode' fields */ -#define V4L2_MODE_HIGHQUALITY 0x0001 /* High quality imaging mode */ -#define V4L2_CAP_TIMEPERFRAME 0x1000 /* timeperframe field is supported */ - -struct <link linkend="v4l2-outputparm">v4l2_outputparm</link> { - __u32 capability; /* Supported modes */ - __u32 outputmode; /* Current mode */ - struct <link linkend="v4l2-fract">v4l2_fract</link> timeperframe; /* Time per frame in seconds */ - __u32 extendedmode; /* Driver-specific extensions */ - __u32 writebuffers; /* # of buffers for write */ - __u32 reserved[4]; -}; - -/* - * I N P U T I M A G E C R O P P I N G - */ -struct <link linkend="v4l2-cropcap">v4l2_cropcap</link> { - enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; - struct <link linkend="v4l2-rect">v4l2_rect</link> bounds; - struct <link linkend="v4l2-rect">v4l2_rect</link> defrect; - struct <link linkend="v4l2-fract">v4l2_fract</link> pixelaspect; -}; - -struct <link linkend="v4l2-crop">v4l2_crop</link> { - enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; - struct <link linkend="v4l2-rect">v4l2_rect</link> c; -}; - -/* - * A N A L O G V I D E O S T A N D A R D - */ - -typedef __u64 v4l2_std_id; - -/* one bit for each */ -#define V4L2_STD_PAL_B ((v4l2_std_id)0x00000001) -#define V4L2_STD_PAL_B1 ((v4l2_std_id)0x00000002) -#define V4L2_STD_PAL_G ((v4l2_std_id)0x00000004) -#define V4L2_STD_PAL_H ((v4l2_std_id)0x00000008) -#define V4L2_STD_PAL_I ((v4l2_std_id)0x00000010) -#define V4L2_STD_PAL_D ((v4l2_std_id)0x00000020) -#define V4L2_STD_PAL_D1 ((v4l2_std_id)0x00000040) -#define V4L2_STD_PAL_K ((v4l2_std_id)0x00000080) - -#define V4L2_STD_PAL_M ((v4l2_std_id)0x00000100) -#define V4L2_STD_PAL_N ((v4l2_std_id)0x00000200) -#define V4L2_STD_PAL_Nc ((v4l2_std_id)0x00000400) -#define V4L2_STD_PAL_60 ((v4l2_std_id)0x00000800) - -#define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000) -#define V4L2_STD_NTSC_M_JP ((v4l2_std_id)0x00002000) -#define V4L2_STD_NTSC_443 ((v4l2_std_id)0x00004000) -#define V4L2_STD_NTSC_M_KR ((v4l2_std_id)0x00008000) - -#define V4L2_STD_SECAM_B ((v4l2_std_id)0x00010000) -#define V4L2_STD_SECAM_D ((v4l2_std_id)0x00020000) -#define V4L2_STD_SECAM_G ((v4l2_std_id)0x00040000) -#define V4L2_STD_SECAM_H ((v4l2_std_id)0x00080000) -#define V4L2_STD_SECAM_K ((v4l2_std_id)0x00100000) -#define V4L2_STD_SECAM_K1 ((v4l2_std_id)0x00200000) -#define V4L2_STD_SECAM_L ((v4l2_std_id)0x00400000) -#define V4L2_STD_SECAM_LC ((v4l2_std_id)0x00800000) - -/* ATSC/HDTV */ -#define V4L2_STD_ATSC_8_VSB ((v4l2_std_id)0x01000000) -#define V4L2_STD_ATSC_16_VSB ((v4l2_std_id)0x02000000) - -/* FIXME: - Although std_id is 64 bits, there is an issue on PPC32 architecture that - makes switch(__u64) to break. So, there's a hack on v4l2-common.c rounding - this value to 32 bits. - As, currently, the max value is for V4L2_STD_ATSC_16_VSB (30 bits wide), - it should work fine. However, if needed to add more than two standards, - v4l2-common.c should be fixed. - */ - -/* some merged standards */ -#define V4L2_STD_MN (V4L2_STD_PAL_M|V4L2_STD_PAL_N|V4L2_STD_PAL_Nc|V4L2_STD_NTSC) -#define V4L2_STD_B (V4L2_STD_PAL_B|V4L2_STD_PAL_B1|V4L2_STD_SECAM_B) -#define V4L2_STD_GH (V4L2_STD_PAL_G|V4L2_STD_PAL_H|V4L2_STD_SECAM_G|V4L2_STD_SECAM_H) -#define V4L2_STD_DK (V4L2_STD_PAL_DK|V4L2_STD_SECAM_DK) - -/* some common needed stuff */ -#define V4L2_STD_PAL_BG (V4L2_STD_PAL_B |\ - V4L2_STD_PAL_B1 |\ - V4L2_STD_PAL_G) -#define V4L2_STD_PAL_DK (V4L2_STD_PAL_D |\ - V4L2_STD_PAL_D1 |\ - V4L2_STD_PAL_K) -#define V4L2_STD_PAL (V4L2_STD_PAL_BG |\ - V4L2_STD_PAL_DK |\ - V4L2_STD_PAL_H |\ - V4L2_STD_PAL_I) -#define V4L2_STD_NTSC (V4L2_STD_NTSC_M |\ - V4L2_STD_NTSC_M_JP |\ - V4L2_STD_NTSC_M_KR) -#define V4L2_STD_SECAM_DK (V4L2_STD_SECAM_D |\ - V4L2_STD_SECAM_K |\ - V4L2_STD_SECAM_K1) -#define V4L2_STD_SECAM (V4L2_STD_SECAM_B |\ - V4L2_STD_SECAM_G |\ - V4L2_STD_SECAM_H |\ - V4L2_STD_SECAM_DK |\ - V4L2_STD_SECAM_L |\ - V4L2_STD_SECAM_LC) - -#define V4L2_STD_525_60 (V4L2_STD_PAL_M |\ - V4L2_STD_PAL_60 |\ - V4L2_STD_NTSC |\ - V4L2_STD_NTSC_443) -#define V4L2_STD_625_50 (V4L2_STD_PAL |\ - V4L2_STD_PAL_N |\ - V4L2_STD_PAL_Nc |\ - V4L2_STD_SECAM) -#define V4L2_STD_ATSC (V4L2_STD_ATSC_8_VSB |\ - V4L2_STD_ATSC_16_VSB) - -#define V4L2_STD_UNKNOWN 0 -#define V4L2_STD_ALL (V4L2_STD_525_60 |\ - V4L2_STD_625_50) - -struct <link linkend="v4l2-standard">v4l2_standard</link> { - __u32 index; - v4l2_std_id id; - __u8 name[24]; - struct <link linkend="v4l2-fract">v4l2_fract</link> frameperiod; /* Frames, not fields */ - __u32 framelines; - __u32 reserved[4]; -}; - -/* - * V I D E O T I M I N G S D V P R E S E T - */ -struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link> { - __u32 preset; - __u32 reserved[4]; -}; - -/* - * D V P R E S E T S E N U M E R A T I O N - */ -struct <link linkend="v4l2-dv-enum-preset">v4l2_dv_enum_preset</link> { - __u32 index; - __u32 preset; - __u8 name[32]; /* Name of the preset timing */ - __u32 width; - __u32 height; - __u32 reserved[4]; -}; - -/* - * D V P R E S E T V A L U E S - */ -#define V4L2_DV_INVALID 0 -#define V4L2_DV_480P59_94 1 /* BT.1362 */ -#define V4L2_DV_576P50 2 /* BT.1362 */ -#define V4L2_DV_720P24 3 /* SMPTE 296M */ -#define V4L2_DV_720P25 4 /* SMPTE 296M */ -#define V4L2_DV_720P30 5 /* SMPTE 296M */ -#define V4L2_DV_720P50 6 /* SMPTE 296M */ -#define V4L2_DV_720P59_94 7 /* SMPTE 274M */ -#define V4L2_DV_720P60 8 /* SMPTE 274M/296M */ -#define V4L2_DV_1080I29_97 9 /* BT.1120/ SMPTE 274M */ -#define V4L2_DV_1080I30 10 /* BT.1120/ SMPTE 274M */ -#define V4L2_DV_1080I25 11 /* BT.1120 */ -#define V4L2_DV_1080I50 12 /* SMPTE 296M */ -#define V4L2_DV_1080I60 13 /* SMPTE 296M */ -#define V4L2_DV_1080P24 14 /* SMPTE 296M */ -#define V4L2_DV_1080P25 15 /* SMPTE 296M */ -#define V4L2_DV_1080P30 16 /* SMPTE 296M */ -#define V4L2_DV_1080P50 17 /* BT.1120 */ -#define V4L2_DV_1080P60 18 /* BT.1120 */ - -/* - * D V B T T I M I N G S - */ - -/* BT.656/BT.1120 timing data */ -struct <link linkend="v4l2-bt-timings">v4l2_bt_timings</link> { - __u32 width; /* width in pixels */ - __u32 height; /* height in lines */ - __u32 interlaced; /* Interlaced or progressive */ - __u32 polarities; /* Positive or negative polarity */ - __u64 pixelclock; /* Pixel clock in HZ. Ex. 74.25MHz->74250000 */ - __u32 hfrontporch; /* Horizpontal front porch in pixels */ - __u32 hsync; /* Horizontal Sync length in pixels */ - __u32 hbackporch; /* Horizontal back porch in pixels */ - __u32 vfrontporch; /* Vertical front porch in pixels */ - __u32 vsync; /* Vertical Sync length in lines */ - __u32 vbackporch; /* Vertical back porch in lines */ - __u32 il_vfrontporch; /* Vertical front porch for bottom field of - * interlaced field formats - */ - __u32 il_vsync; /* Vertical sync length for bottom field of - * interlaced field formats - */ - __u32 il_vbackporch; /* Vertical back porch for bottom field of - * interlaced field formats - */ - __u32 reserved[16]; -} __attribute__ ((packed)); - -/* Interlaced or progressive format */ -#define V4L2_DV_PROGRESSIVE 0 -#define V4L2_DV_INTERLACED 1 - -/* Polarities. If bit is not set, it is assumed to be negative polarity */ -#define V4L2_DV_VSYNC_POS_POL 0x00000001 -#define V4L2_DV_HSYNC_POS_POL 0x00000002 - - -/* DV timings */ -struct <link linkend="v4l2-dv-timings">v4l2_dv_timings</link> { - __u32 type; - union { - struct <link linkend="v4l2-bt-timings">v4l2_bt_timings</link> bt; - __u32 reserved[32]; - }; -} __attribute__ ((packed)); - -/* Values for the type field */ -#define V4L2_DV_BT_656_1120 0 /* BT.656/1120 timing type */ - -/* - * V I D E O I N P U T S - */ -struct <link linkend="v4l2-input">v4l2_input</link> { - __u32 index; /* Which input */ - __u8 name[32]; /* Label */ - __u32 type; /* Type of input */ - __u32 audioset; /* Associated audios (bitfield) */ - __u32 tuner; /* Associated tuner */ - v4l2_std_id std; - __u32 status; - __u32 capabilities; - __u32 reserved[3]; -}; - -/* Values for the 'type' field */ -#define V4L2_INPUT_TYPE_TUNER 1 -#define V4L2_INPUT_TYPE_CAMERA 2 - -/* field 'status' - general */ -#define V4L2_IN_ST_NO_POWER 0x00000001 /* Attached device is off */ -#define V4L2_IN_ST_NO_SIGNAL 0x00000002 -#define V4L2_IN_ST_NO_COLOR 0x00000004 - -/* field 'status' - sensor orientation */ -/* If sensor is mounted upside down set both bits */ -#define V4L2_IN_ST_HFLIP 0x00000010 /* Frames are flipped horizontally */ -#define V4L2_IN_ST_VFLIP 0x00000020 /* Frames are flipped vertically */ - -/* field 'status' - analog */ -#define V4L2_IN_ST_NO_H_LOCK 0x00000100 /* No horizontal sync lock */ -#define V4L2_IN_ST_COLOR_KILL 0x00000200 /* Color killer is active */ - -/* field 'status' - digital */ -#define V4L2_IN_ST_NO_SYNC 0x00010000 /* No synchronization lock */ -#define V4L2_IN_ST_NO_EQU 0x00020000 /* No equalizer lock */ -#define V4L2_IN_ST_NO_CARRIER 0x00040000 /* Carrier recovery failed */ - -/* field 'status' - VCR and set-top box */ -#define V4L2_IN_ST_MACROVISION 0x01000000 /* Macrovision detected */ -#define V4L2_IN_ST_NO_ACCESS 0x02000000 /* Conditional access denied */ -#define V4L2_IN_ST_VTR 0x04000000 /* VTR time constant */ - -/* capabilities flags */ -#define V4L2_IN_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */ -#define V4L2_IN_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */ -#define V4L2_IN_CAP_STD 0x00000004 /* Supports S_STD */ - -/* - * V I D E O O U T P U T S - */ -struct <link linkend="v4l2-output">v4l2_output</link> { - __u32 index; /* Which output */ - __u8 name[32]; /* Label */ - __u32 type; /* Type of output */ - __u32 audioset; /* Associated audios (bitfield) */ - __u32 modulator; /* Associated modulator */ - v4l2_std_id std; - __u32 capabilities; - __u32 reserved[3]; -}; -/* Values for the 'type' field */ -#define V4L2_OUTPUT_TYPE_MODULATOR 1 -#define V4L2_OUTPUT_TYPE_ANALOG 2 -#define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY 3 - -/* capabilities flags */ -#define V4L2_OUT_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */ -#define V4L2_OUT_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */ -#define V4L2_OUT_CAP_STD 0x00000004 /* Supports S_STD */ - -/* - * C O N T R O L S - */ -struct <link linkend="v4l2-control">v4l2_control</link> { - __u32 id; - __s32 value; -}; - -struct <link linkend="v4l2-ext-control">v4l2_ext_control</link> { - __u32 id; - __u32 size; - __u32 reserved2[1]; - union { - __s32 value; - __s64 value64; - char *string; - }; -} __attribute__ ((packed)); - -struct <link linkend="v4l2-ext-controls">v4l2_ext_controls</link> { - __u32 ctrl_class; - __u32 count; - __u32 error_idx; - __u32 reserved[2]; - struct <link linkend="v4l2-ext-control">v4l2_ext_control</link> *controls; -}; - -/* Values for ctrl_class field */ -#define V4L2_CTRL_CLASS_USER 0x00980000 /* Old-style 'user' controls */ -#define V4L2_CTRL_CLASS_MPEG 0x00990000 /* MPEG-compression controls */ -#define V4L2_CTRL_CLASS_CAMERA 0x009a0000 /* Camera class controls */ -#define V4L2_CTRL_CLASS_FM_TX 0x009b0000 /* FM Modulator control class */ - -#define V4L2_CTRL_ID_MASK (0x0fffffff) -#define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL) -#define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000) - -enum <link linkend="v4l2-ctrl-type">v4l2_ctrl_type</link> { - V4L2_CTRL_TYPE_INTEGER = 1, - V4L2_CTRL_TYPE_BOOLEAN = 2, - V4L2_CTRL_TYPE_MENU = 3, - V4L2_CTRL_TYPE_BUTTON = 4, - V4L2_CTRL_TYPE_INTEGER64 = 5, - V4L2_CTRL_TYPE_CTRL_CLASS = 6, - V4L2_CTRL_TYPE_STRING = 7, -}; - -/* Used in the VIDIOC_QUERYCTRL ioctl for querying controls */ -struct <link linkend="v4l2-queryctrl">v4l2_queryctrl</link> { - __u32 id; - enum <link linkend="v4l2-ctrl-type">v4l2_ctrl_type</link> type; - __u8 name[32]; /* Whatever */ - __s32 minimum; /* Note signedness */ - __s32 maximum; - __s32 step; - __s32 default_value; - __u32 flags; - __u32 reserved[2]; -}; - -/* Used in the VIDIOC_QUERYMENU ioctl for querying menu items */ -struct <link linkend="v4l2-querymenu">v4l2_querymenu</link> { - __u32 id; - __u32 index; - __u8 name[32]; /* Whatever */ - __u32 reserved; -}; - -/* Control flags */ -#define V4L2_CTRL_FLAG_DISABLED 0x0001 -#define V4L2_CTRL_FLAG_GRABBED 0x0002 -#define V4L2_CTRL_FLAG_READ_ONLY 0x0004 -#define V4L2_CTRL_FLAG_UPDATE 0x0008 -#define V4L2_CTRL_FLAG_INACTIVE 0x0010 -#define V4L2_CTRL_FLAG_SLIDER 0x0020 -#define V4L2_CTRL_FLAG_WRITE_ONLY 0x0040 - -/* Query flag, to be ORed with the control ID */ -#define V4L2_CTRL_FLAG_NEXT_CTRL 0x80000000 - -/* User-class control IDs defined by V4L2 */ -#define V4L2_CID_BASE (V4L2_CTRL_CLASS_USER | 0x900) -#define V4L2_CID_USER_BASE V4L2_CID_BASE -/* IDs reserved for driver specific controls */ -#define V4L2_CID_PRIVATE_BASE 0x08000000 - -#define V4L2_CID_USER_CLASS (V4L2_CTRL_CLASS_USER | 1) -#define V4L2_CID_BRIGHTNESS (V4L2_CID_BASE+0) -#define V4L2_CID_CONTRAST (V4L2_CID_BASE+1) -#define V4L2_CID_SATURATION (V4L2_CID_BASE+2) -#define V4L2_CID_HUE (V4L2_CID_BASE+3) -#define V4L2_CID_AUDIO_VOLUME (V4L2_CID_BASE+5) -#define V4L2_CID_AUDIO_BALANCE (V4L2_CID_BASE+6) -#define V4L2_CID_AUDIO_BASS (V4L2_CID_BASE+7) -#define V4L2_CID_AUDIO_TREBLE (V4L2_CID_BASE+8) -#define V4L2_CID_AUDIO_MUTE (V4L2_CID_BASE+9) -#define V4L2_CID_AUDIO_LOUDNESS (V4L2_CID_BASE+10) -#define V4L2_CID_BLACK_LEVEL (V4L2_CID_BASE+11) /* Deprecated */ -#define V4L2_CID_AUTO_WHITE_BALANCE (V4L2_CID_BASE+12) -#define V4L2_CID_DO_WHITE_BALANCE (V4L2_CID_BASE+13) -#define V4L2_CID_RED_BALANCE (V4L2_CID_BASE+14) -#define V4L2_CID_BLUE_BALANCE (V4L2_CID_BASE+15) -#define V4L2_CID_GAMMA (V4L2_CID_BASE+16) -#define V4L2_CID_WHITENESS (V4L2_CID_GAMMA) /* Deprecated */ -#define V4L2_CID_EXPOSURE (V4L2_CID_BASE+17) -#define V4L2_CID_AUTOGAIN (V4L2_CID_BASE+18) -#define V4L2_CID_GAIN (V4L2_CID_BASE+19) -#define V4L2_CID_HFLIP (V4L2_CID_BASE+20) -#define V4L2_CID_VFLIP (V4L2_CID_BASE+21) - -/* Deprecated; use V4L2_CID_PAN_RESET and V4L2_CID_TILT_RESET */ -#define V4L2_CID_HCENTER (V4L2_CID_BASE+22) -#define V4L2_CID_VCENTER (V4L2_CID_BASE+23) - -#define V4L2_CID_POWER_LINE_FREQUENCY (V4L2_CID_BASE+24) -enum <link linkend="v4l2-power-line-frequency">v4l2_power_line_frequency</link> { - V4L2_CID_POWER_LINE_FREQUENCY_DISABLED = 0, - V4L2_CID_POWER_LINE_FREQUENCY_50HZ = 1, - V4L2_CID_POWER_LINE_FREQUENCY_60HZ = 2, -}; -#define V4L2_CID_HUE_AUTO (V4L2_CID_BASE+25) -#define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_BASE+26) -#define V4L2_CID_SHARPNESS (V4L2_CID_BASE+27) -#define V4L2_CID_BACKLIGHT_COMPENSATION (V4L2_CID_BASE+28) -#define V4L2_CID_CHROMA_AGC (V4L2_CID_BASE+29) -#define V4L2_CID_COLOR_KILLER (V4L2_CID_BASE+30) -#define V4L2_CID_COLORFX (V4L2_CID_BASE+31) -enum <link linkend="v4l2-colorfx">v4l2_colorfx</link> { - V4L2_COLORFX_NONE = 0, - V4L2_COLORFX_BW = 1, - V4L2_COLORFX_SEPIA = 2, - V4L2_COLORFX_NEGATIVE = 3, - V4L2_COLORFX_EMBOSS = 4, - V4L2_COLORFX_SKETCH = 5, - V4L2_COLORFX_SKY_BLUE = 6, - V4L2_COLORFX_GRASS_GREEN = 7, - V4L2_COLORFX_SKIN_WHITEN = 8, - V4L2_COLORFX_VIVID = 9, -}; -#define V4L2_CID_AUTOBRIGHTNESS (V4L2_CID_BASE+32) -#define V4L2_CID_BAND_STOP_FILTER (V4L2_CID_BASE+33) - -#define V4L2_CID_ROTATE (V4L2_CID_BASE+34) -#define V4L2_CID_BG_COLOR (V4L2_CID_BASE+35) - -#define V4L2_CID_CHROMA_GAIN (V4L2_CID_BASE+36) - -#define V4L2_CID_ILLUMINATORS_1 (V4L2_CID_BASE+37) -#define V4L2_CID_ILLUMINATORS_2 (V4L2_CID_BASE+38) - -/* last CID + 1 */ -#define V4L2_CID_LASTP1 (V4L2_CID_BASE+39) - -/* MPEG-class control IDs defined by V4L2 */ -#define V4L2_CID_MPEG_BASE (V4L2_CTRL_CLASS_MPEG | 0x900) -#define V4L2_CID_MPEG_CLASS (V4L2_CTRL_CLASS_MPEG | 1) - -/* MPEG streams */ -#define V4L2_CID_MPEG_STREAM_TYPE (V4L2_CID_MPEG_BASE+0) -enum <link linkend="v4l2-mpeg-stream-type">v4l2_mpeg_stream_type</link> { - V4L2_MPEG_STREAM_TYPE_MPEG2_PS = 0, /* MPEG-2 program stream */ - V4L2_MPEG_STREAM_TYPE_MPEG2_TS = 1, /* MPEG-2 transport stream */ - V4L2_MPEG_STREAM_TYPE_MPEG1_SS = 2, /* MPEG-1 system stream */ - V4L2_MPEG_STREAM_TYPE_MPEG2_DVD = 3, /* MPEG-2 DVD-compatible stream */ - V4L2_MPEG_STREAM_TYPE_MPEG1_VCD = 4, /* MPEG-1 VCD-compatible stream */ - V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD = 5, /* MPEG-2 SVCD-compatible stream */ -}; -#define V4L2_CID_MPEG_STREAM_PID_PMT (V4L2_CID_MPEG_BASE+1) -#define V4L2_CID_MPEG_STREAM_PID_AUDIO (V4L2_CID_MPEG_BASE+2) -#define V4L2_CID_MPEG_STREAM_PID_VIDEO (V4L2_CID_MPEG_BASE+3) -#define V4L2_CID_MPEG_STREAM_PID_PCR (V4L2_CID_MPEG_BASE+4) -#define V4L2_CID_MPEG_STREAM_PES_ID_AUDIO (V4L2_CID_MPEG_BASE+5) -#define V4L2_CID_MPEG_STREAM_PES_ID_VIDEO (V4L2_CID_MPEG_BASE+6) -#define V4L2_CID_MPEG_STREAM_VBI_FMT (V4L2_CID_MPEG_BASE+7) -enum <link linkend="v4l2-mpeg-stream-vbi-fmt">v4l2_mpeg_stream_vbi_fmt</link> { - V4L2_MPEG_STREAM_VBI_FMT_NONE = 0, /* No VBI in the MPEG stream */ - V4L2_MPEG_STREAM_VBI_FMT_IVTV = 1, /* VBI in private packets, IVTV format */ -}; - -/* MPEG audio */ -#define V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ (V4L2_CID_MPEG_BASE+100) -enum <link linkend="v4l2-mpeg-audio-sampling-freq">v4l2_mpeg_audio_sampling_freq</link> { - V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100 = 0, - V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000 = 1, - V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000 = 2, -}; -#define V4L2_CID_MPEG_AUDIO_ENCODING (V4L2_CID_MPEG_BASE+101) -enum <link linkend="v4l2-mpeg-audio-encoding">v4l2_mpeg_audio_encoding</link> { - V4L2_MPEG_AUDIO_ENCODING_LAYER_1 = 0, - V4L2_MPEG_AUDIO_ENCODING_LAYER_2 = 1, - V4L2_MPEG_AUDIO_ENCODING_LAYER_3 = 2, - V4L2_MPEG_AUDIO_ENCODING_AAC = 3, - V4L2_MPEG_AUDIO_ENCODING_AC3 = 4, -}; -#define V4L2_CID_MPEG_AUDIO_L1_BITRATE (V4L2_CID_MPEG_BASE+102) -enum <link linkend="v4l2-mpeg-audio-l1-bitrate">v4l2_mpeg_audio_l1_bitrate</link> { - V4L2_MPEG_AUDIO_L1_BITRATE_32K = 0, - V4L2_MPEG_AUDIO_L1_BITRATE_64K = 1, - V4L2_MPEG_AUDIO_L1_BITRATE_96K = 2, - V4L2_MPEG_AUDIO_L1_BITRATE_128K = 3, - V4L2_MPEG_AUDIO_L1_BITRATE_160K = 4, - V4L2_MPEG_AUDIO_L1_BITRATE_192K = 5, - V4L2_MPEG_AUDIO_L1_BITRATE_224K = 6, - V4L2_MPEG_AUDIO_L1_BITRATE_256K = 7, - V4L2_MPEG_AUDIO_L1_BITRATE_288K = 8, - V4L2_MPEG_AUDIO_L1_BITRATE_320K = 9, - V4L2_MPEG_AUDIO_L1_BITRATE_352K = 10, - V4L2_MPEG_AUDIO_L1_BITRATE_384K = 11, - V4L2_MPEG_AUDIO_L1_BITRATE_416K = 12, - V4L2_MPEG_AUDIO_L1_BITRATE_448K = 13, -}; -#define V4L2_CID_MPEG_AUDIO_L2_BITRATE (V4L2_CID_MPEG_BASE+103) -enum <link linkend="v4l2-mpeg-audio-l2-bitrate">v4l2_mpeg_audio_l2_bitrate</link> { - V4L2_MPEG_AUDIO_L2_BITRATE_32K = 0, - V4L2_MPEG_AUDIO_L2_BITRATE_48K = 1, - V4L2_MPEG_AUDIO_L2_BITRATE_56K = 2, - V4L2_MPEG_AUDIO_L2_BITRATE_64K = 3, - V4L2_MPEG_AUDIO_L2_BITRATE_80K = 4, - V4L2_MPEG_AUDIO_L2_BITRATE_96K = 5, - V4L2_MPEG_AUDIO_L2_BITRATE_112K = 6, - V4L2_MPEG_AUDIO_L2_BITRATE_128K = 7, - V4L2_MPEG_AUDIO_L2_BITRATE_160K = 8, - V4L2_MPEG_AUDIO_L2_BITRATE_192K = 9, - V4L2_MPEG_AUDIO_L2_BITRATE_224K = 10, - V4L2_MPEG_AUDIO_L2_BITRATE_256K = 11, - V4L2_MPEG_AUDIO_L2_BITRATE_320K = 12, - V4L2_MPEG_AUDIO_L2_BITRATE_384K = 13, -}; -#define V4L2_CID_MPEG_AUDIO_L3_BITRATE (V4L2_CID_MPEG_BASE+104) -enum <link linkend="v4l2-mpeg-audio-l3-bitrate">v4l2_mpeg_audio_l3_bitrate</link> { - V4L2_MPEG_AUDIO_L3_BITRATE_32K = 0, - V4L2_MPEG_AUDIO_L3_BITRATE_40K = 1, - V4L2_MPEG_AUDIO_L3_BITRATE_48K = 2, - V4L2_MPEG_AUDIO_L3_BITRATE_56K = 3, - V4L2_MPEG_AUDIO_L3_BITRATE_64K = 4, - V4L2_MPEG_AUDIO_L3_BITRATE_80K = 5, - V4L2_MPEG_AUDIO_L3_BITRATE_96K = 6, - V4L2_MPEG_AUDIO_L3_BITRATE_112K = 7, - V4L2_MPEG_AUDIO_L3_BITRATE_128K = 8, - V4L2_MPEG_AUDIO_L3_BITRATE_160K = 9, - V4L2_MPEG_AUDIO_L3_BITRATE_192K = 10, - V4L2_MPEG_AUDIO_L3_BITRATE_224K = 11, - V4L2_MPEG_AUDIO_L3_BITRATE_256K = 12, - V4L2_MPEG_AUDIO_L3_BITRATE_320K = 13, -}; -#define V4L2_CID_MPEG_AUDIO_MODE (V4L2_CID_MPEG_BASE+105) -enum <link linkend="v4l2-mpeg-audio-mode">v4l2_mpeg_audio_mode</link> { - V4L2_MPEG_AUDIO_MODE_STEREO = 0, - V4L2_MPEG_AUDIO_MODE_JOINT_STEREO = 1, - V4L2_MPEG_AUDIO_MODE_DUAL = 2, - V4L2_MPEG_AUDIO_MODE_MONO = 3, -}; -#define V4L2_CID_MPEG_AUDIO_MODE_EXTENSION (V4L2_CID_MPEG_BASE+106) -enum <link linkend="v4l2-mpeg-audio-mode-extension">v4l2_mpeg_audio_mode_extension</link> { - V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4 = 0, - V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_8 = 1, - V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_12 = 2, - V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16 = 3, -}; -#define V4L2_CID_MPEG_AUDIO_EMPHASIS (V4L2_CID_MPEG_BASE+107) -enum <link linkend="v4l2-mpeg-audio-emphasis">v4l2_mpeg_audio_emphasis</link> { - V4L2_MPEG_AUDIO_EMPHASIS_NONE = 0, - V4L2_MPEG_AUDIO_EMPHASIS_50_DIV_15_uS = 1, - V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17 = 2, -}; -#define V4L2_CID_MPEG_AUDIO_CRC (V4L2_CID_MPEG_BASE+108) -enum <link linkend="v4l2-mpeg-audio-crc">v4l2_mpeg_audio_crc</link> { - V4L2_MPEG_AUDIO_CRC_NONE = 0, - V4L2_MPEG_AUDIO_CRC_CRC16 = 1, -}; -#define V4L2_CID_MPEG_AUDIO_MUTE (V4L2_CID_MPEG_BASE+109) -#define V4L2_CID_MPEG_AUDIO_AAC_BITRATE (V4L2_CID_MPEG_BASE+110) -#define V4L2_CID_MPEG_AUDIO_AC3_BITRATE (V4L2_CID_MPEG_BASE+111) -enum <link linkend="v4l2-mpeg-audio-ac3-bitrate">v4l2_mpeg_audio_ac3_bitrate</link> { - V4L2_MPEG_AUDIO_AC3_BITRATE_32K = 0, - V4L2_MPEG_AUDIO_AC3_BITRATE_40K = 1, - V4L2_MPEG_AUDIO_AC3_BITRATE_48K = 2, - V4L2_MPEG_AUDIO_AC3_BITRATE_56K = 3, - V4L2_MPEG_AUDIO_AC3_BITRATE_64K = 4, - V4L2_MPEG_AUDIO_AC3_BITRATE_80K = 5, - V4L2_MPEG_AUDIO_AC3_BITRATE_96K = 6, - V4L2_MPEG_AUDIO_AC3_BITRATE_112K = 7, - V4L2_MPEG_AUDIO_AC3_BITRATE_128K = 8, - V4L2_MPEG_AUDIO_AC3_BITRATE_160K = 9, - V4L2_MPEG_AUDIO_AC3_BITRATE_192K = 10, - V4L2_MPEG_AUDIO_AC3_BITRATE_224K = 11, - V4L2_MPEG_AUDIO_AC3_BITRATE_256K = 12, - V4L2_MPEG_AUDIO_AC3_BITRATE_320K = 13, - V4L2_MPEG_AUDIO_AC3_BITRATE_384K = 14, - V4L2_MPEG_AUDIO_AC3_BITRATE_448K = 15, - V4L2_MPEG_AUDIO_AC3_BITRATE_512K = 16, - V4L2_MPEG_AUDIO_AC3_BITRATE_576K = 17, - V4L2_MPEG_AUDIO_AC3_BITRATE_640K = 18, -}; - -/* MPEG video */ -#define V4L2_CID_MPEG_VIDEO_ENCODING (V4L2_CID_MPEG_BASE+200) -enum <link linkend="v4l2-mpeg-video-encoding">v4l2_mpeg_video_encoding</link> { - V4L2_MPEG_VIDEO_ENCODING_MPEG_1 = 0, - V4L2_MPEG_VIDEO_ENCODING_MPEG_2 = 1, - V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC = 2, -}; -#define V4L2_CID_MPEG_VIDEO_ASPECT (V4L2_CID_MPEG_BASE+201) -enum <link linkend="v4l2-mpeg-video-aspect">v4l2_mpeg_video_aspect</link> { - V4L2_MPEG_VIDEO_ASPECT_1x1 = 0, - V4L2_MPEG_VIDEO_ASPECT_4x3 = 1, - V4L2_MPEG_VIDEO_ASPECT_16x9 = 2, - V4L2_MPEG_VIDEO_ASPECT_221x100 = 3, -}; -#define V4L2_CID_MPEG_VIDEO_B_FRAMES (V4L2_CID_MPEG_BASE+202) -#define V4L2_CID_MPEG_VIDEO_GOP_SIZE (V4L2_CID_MPEG_BASE+203) -#define V4L2_CID_MPEG_VIDEO_GOP_CLOSURE (V4L2_CID_MPEG_BASE+204) -#define V4L2_CID_MPEG_VIDEO_PULLDOWN (V4L2_CID_MPEG_BASE+205) -#define V4L2_CID_MPEG_VIDEO_BITRATE_MODE (V4L2_CID_MPEG_BASE+206) -enum <link linkend="v4l2-mpeg-video-bitrate-mode">v4l2_mpeg_video_bitrate_mode</link> { - V4L2_MPEG_VIDEO_BITRATE_MODE_VBR = 0, - V4L2_MPEG_VIDEO_BITRATE_MODE_CBR = 1, -}; -#define V4L2_CID_MPEG_VIDEO_BITRATE (V4L2_CID_MPEG_BASE+207) -#define V4L2_CID_MPEG_VIDEO_BITRATE_PEAK (V4L2_CID_MPEG_BASE+208) -#define V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION (V4L2_CID_MPEG_BASE+209) -#define V4L2_CID_MPEG_VIDEO_MUTE (V4L2_CID_MPEG_BASE+210) -#define V4L2_CID_MPEG_VIDEO_MUTE_YUV (V4L2_CID_MPEG_BASE+211) - -/* MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */ -#define V4L2_CID_MPEG_CX2341X_BASE (V4L2_CTRL_CLASS_MPEG | 0x1000) -#define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE (V4L2_CID_MPEG_CX2341X_BASE+0) -enum <link linkend="v4l2-mpeg-cx2341x-video-spatial-filter-mode">v4l2_mpeg_cx2341x_video_spatial_filter_mode</link> { - V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL = 0, - V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO = 1, -}; -#define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER (V4L2_CID_MPEG_CX2341X_BASE+1) -#define V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE (V4L2_CID_MPEG_CX2341X_BASE+2) -enum <link linkend="luma-spatial-filter-type">v4l2_mpeg_cx2341x_video_luma_spatial_filter_type</link> { - V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF = 0, - V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR = 1, - V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_VERT = 2, - V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_HV_SEPARABLE = 3, - V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE = 4, -}; -#define V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE (V4L2_CID_MPEG_CX2341X_BASE+3) -enum <link linkend="chroma-spatial-filter-type">v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type</link> { - V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF = 0, - V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR = 1, -}; -#define V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE (V4L2_CID_MPEG_CX2341X_BASE+4) -enum <link linkend="v4l2-mpeg-cx2341x-video-temporal-filter-mode">v4l2_mpeg_cx2341x_video_temporal_filter_mode</link> { - V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL = 0, - V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO = 1, -}; -#define V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER (V4L2_CID_MPEG_CX2341X_BASE+5) -#define V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE (V4L2_CID_MPEG_CX2341X_BASE+6) -enum <link linkend="v4l2-mpeg-cx2341x-video-median-filter-type">v4l2_mpeg_cx2341x_video_median_filter_type</link> { - V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF = 0, - V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR = 1, - V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_VERT = 2, - V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR_VERT = 3, - V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG = 4, -}; -#define V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM (V4L2_CID_MPEG_CX2341X_BASE+7) -#define V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP (V4L2_CID_MPEG_CX2341X_BASE+8) -#define V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM (V4L2_CID_MPEG_CX2341X_BASE+9) -#define V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP (V4L2_CID_MPEG_CX2341X_BASE+10) -#define V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS (V4L2_CID_MPEG_CX2341X_BASE+11) - -/* Camera class control IDs */ -#define V4L2_CID_CAMERA_CLASS_BASE (V4L2_CTRL_CLASS_CAMERA | 0x900) -#define V4L2_CID_CAMERA_CLASS (V4L2_CTRL_CLASS_CAMERA | 1) - -#define V4L2_CID_EXPOSURE_AUTO (V4L2_CID_CAMERA_CLASS_BASE+1) -enum <link linkend="v4l2-exposure-auto-type">v4l2_exposure_auto_type</link> { - V4L2_EXPOSURE_AUTO = 0, - V4L2_EXPOSURE_MANUAL = 1, - V4L2_EXPOSURE_SHUTTER_PRIORITY = 2, - V4L2_EXPOSURE_APERTURE_PRIORITY = 3 -}; -#define V4L2_CID_EXPOSURE_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+2) -#define V4L2_CID_EXPOSURE_AUTO_PRIORITY (V4L2_CID_CAMERA_CLASS_BASE+3) - -#define V4L2_CID_PAN_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+4) -#define V4L2_CID_TILT_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+5) -#define V4L2_CID_PAN_RESET (V4L2_CID_CAMERA_CLASS_BASE+6) -#define V4L2_CID_TILT_RESET (V4L2_CID_CAMERA_CLASS_BASE+7) - -#define V4L2_CID_PAN_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+8) -#define V4L2_CID_TILT_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+9) - -#define V4L2_CID_FOCUS_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+10) -#define V4L2_CID_FOCUS_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+11) -#define V4L2_CID_FOCUS_AUTO (V4L2_CID_CAMERA_CLASS_BASE+12) - -#define V4L2_CID_ZOOM_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+13) -#define V4L2_CID_ZOOM_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+14) -#define V4L2_CID_ZOOM_CONTINUOUS (V4L2_CID_CAMERA_CLASS_BASE+15) - -#define V4L2_CID_PRIVACY (V4L2_CID_CAMERA_CLASS_BASE+16) - -#define V4L2_CID_IRIS_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+17) -#define V4L2_CID_IRIS_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+18) - -/* FM Modulator class control IDs */ -#define V4L2_CID_FM_TX_CLASS_BASE (V4L2_CTRL_CLASS_FM_TX | 0x900) -#define V4L2_CID_FM_TX_CLASS (V4L2_CTRL_CLASS_FM_TX | 1) - -#define V4L2_CID_RDS_TX_DEVIATION (V4L2_CID_FM_TX_CLASS_BASE + 1) -#define V4L2_CID_RDS_TX_PI (V4L2_CID_FM_TX_CLASS_BASE + 2) -#define V4L2_CID_RDS_TX_PTY (V4L2_CID_FM_TX_CLASS_BASE + 3) -#define V4L2_CID_RDS_TX_PS_NAME (V4L2_CID_FM_TX_CLASS_BASE + 5) -#define V4L2_CID_RDS_TX_RADIO_TEXT (V4L2_CID_FM_TX_CLASS_BASE + 6) - -#define V4L2_CID_AUDIO_LIMITER_ENABLED (V4L2_CID_FM_TX_CLASS_BASE + 64) -#define V4L2_CID_AUDIO_LIMITER_RELEASE_TIME (V4L2_CID_FM_TX_CLASS_BASE + 65) -#define V4L2_CID_AUDIO_LIMITER_DEVIATION (V4L2_CID_FM_TX_CLASS_BASE + 66) - -#define V4L2_CID_AUDIO_COMPRESSION_ENABLED (V4L2_CID_FM_TX_CLASS_BASE + 80) -#define V4L2_CID_AUDIO_COMPRESSION_GAIN (V4L2_CID_FM_TX_CLASS_BASE + 81) -#define V4L2_CID_AUDIO_COMPRESSION_THRESHOLD (V4L2_CID_FM_TX_CLASS_BASE + 82) -#define V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME (V4L2_CID_FM_TX_CLASS_BASE + 83) -#define V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME (V4L2_CID_FM_TX_CLASS_BASE + 84) - -#define V4L2_CID_PILOT_TONE_ENABLED (V4L2_CID_FM_TX_CLASS_BASE + 96) -#define V4L2_CID_PILOT_TONE_DEVIATION (V4L2_CID_FM_TX_CLASS_BASE + 97) -#define V4L2_CID_PILOT_TONE_FREQUENCY (V4L2_CID_FM_TX_CLASS_BASE + 98) - -#define V4L2_CID_TUNE_PREEMPHASIS (V4L2_CID_FM_TX_CLASS_BASE + 112) -enum <link linkend="v4l2-preemphasis">v4l2_preemphasis</link> { - V4L2_PREEMPHASIS_DISABLED = 0, - V4L2_PREEMPHASIS_50_uS = 1, - V4L2_PREEMPHASIS_75_uS = 2, -}; -#define V4L2_CID_TUNE_POWER_LEVEL (V4L2_CID_FM_TX_CLASS_BASE + 113) -#define V4L2_CID_TUNE_ANTENNA_CAPACITOR (V4L2_CID_FM_TX_CLASS_BASE + 114) - -/* - * T U N I N G - */ -struct <link linkend="v4l2-tuner">v4l2_tuner</link> { - __u32 index; - __u8 name[32]; - enum <link linkend="v4l2-tuner-type">v4l2_tuner_type</link> type; - __u32 capability; - __u32 rangelow; - __u32 rangehigh; - __u32 rxsubchans; - __u32 audmode; - __s32 signal; - __s32 afc; - __u32 reserved[4]; -}; - -struct <link linkend="v4l2-modulator">v4l2_modulator</link> { - __u32 index; - __u8 name[32]; - __u32 capability; - __u32 rangelow; - __u32 rangehigh; - __u32 txsubchans; - __u32 reserved[4]; -}; - -/* Flags for the 'capability' field */ -#define V4L2_TUNER_CAP_LOW 0x0001 -#define V4L2_TUNER_CAP_NORM 0x0002 -#define V4L2_TUNER_CAP_STEREO 0x0010 -#define V4L2_TUNER_CAP_LANG2 0x0020 -#define V4L2_TUNER_CAP_SAP 0x0020 -#define V4L2_TUNER_CAP_LANG1 0x0040 -#define V4L2_TUNER_CAP_RDS 0x0080 -#define V4L2_TUNER_CAP_RDS_BLOCK_IO 0x0100 -#define V4L2_TUNER_CAP_RDS_CONTROLS 0x0200 - -/* Flags for the 'rxsubchans' field */ -#define V4L2_TUNER_SUB_MONO 0x0001 -#define V4L2_TUNER_SUB_STEREO 0x0002 -#define V4L2_TUNER_SUB_LANG2 0x0004 -#define V4L2_TUNER_SUB_SAP 0x0004 -#define V4L2_TUNER_SUB_LANG1 0x0008 -#define V4L2_TUNER_SUB_RDS 0x0010 - -/* Values for the 'audmode' field */ -#define V4L2_TUNER_MODE_MONO 0x0000 -#define V4L2_TUNER_MODE_STEREO 0x0001 -#define V4L2_TUNER_MODE_LANG2 0x0002 -#define V4L2_TUNER_MODE_SAP 0x0002 -#define V4L2_TUNER_MODE_LANG1 0x0003 -#define V4L2_TUNER_MODE_LANG1_LANG2 0x0004 - -struct <link linkend="v4l2-frequency">v4l2_frequency</link> { - __u32 tuner; - enum <link linkend="v4l2-tuner-type">v4l2_tuner_type</link> type; - __u32 frequency; - __u32 reserved[8]; -}; - -struct <link linkend="v4l2-hw-freq-seek">v4l2_hw_freq_seek</link> { - __u32 tuner; - enum <link linkend="v4l2-tuner-type">v4l2_tuner_type</link> type; - __u32 seek_upward; - __u32 wrap_around; - __u32 spacing; - __u32 reserved[7]; -}; - -/* - * R D S - */ - -struct <link linkend="v4l2-rds-data">v4l2_rds_data</link> { - __u8 lsb; - __u8 msb; - __u8 block; -} __attribute__ ((packed)); - -#define V4L2_RDS_BLOCK_MSK 0x7 -#define V4L2_RDS_BLOCK_A 0 -#define V4L2_RDS_BLOCK_B 1 -#define V4L2_RDS_BLOCK_C 2 -#define V4L2_RDS_BLOCK_D 3 -#define V4L2_RDS_BLOCK_C_ALT 4 -#define V4L2_RDS_BLOCK_INVALID 7 - -#define V4L2_RDS_BLOCK_CORRECTED 0x40 -#define V4L2_RDS_BLOCK_ERROR 0x80 - -/* - * A U D I O - */ -struct <link linkend="v4l2-audio">v4l2_audio</link> { - __u32 index; - __u8 name[32]; - __u32 capability; - __u32 mode; - __u32 reserved[2]; -}; - -/* Flags for the 'capability' field */ -#define V4L2_AUDCAP_STEREO 0x00001 -#define V4L2_AUDCAP_AVL 0x00002 - -/* Flags for the 'mode' field */ -#define V4L2_AUDMODE_AVL 0x00001 - -struct <link linkend="v4l2-audioout">v4l2_audioout</link> { - __u32 index; - __u8 name[32]; - __u32 capability; - __u32 mode; - __u32 reserved[2]; -}; - -/* - * M P E G S E R V I C E S - * - * NOTE: EXPERIMENTAL API - */ -#if 1 -#define V4L2_ENC_IDX_FRAME_I (0) -#define V4L2_ENC_IDX_FRAME_P (1) -#define V4L2_ENC_IDX_FRAME_B (2) -#define V4L2_ENC_IDX_FRAME_MASK (0xf) - -struct <link linkend="v4l2-enc-idx-entry">v4l2_enc_idx_entry</link> { - __u64 offset; - __u64 pts; - __u32 length; - __u32 flags; - __u32 reserved[2]; -}; - -#define V4L2_ENC_IDX_ENTRIES (64) -struct <link linkend="v4l2-enc-idx">v4l2_enc_idx</link> { - __u32 entries; - __u32 entries_cap; - __u32 reserved[4]; - struct <link linkend="v4l2-enc-idx-entry">v4l2_enc_idx_entry</link> entry[V4L2_ENC_IDX_ENTRIES]; -}; - - -#define V4L2_ENC_CMD_START (0) -#define V4L2_ENC_CMD_STOP (1) -#define V4L2_ENC_CMD_PAUSE (2) -#define V4L2_ENC_CMD_RESUME (3) - -/* Flags for V4L2_ENC_CMD_STOP */ -#define V4L2_ENC_CMD_STOP_AT_GOP_END (1 << 0) - -struct <link linkend="v4l2-encoder-cmd">v4l2_encoder_cmd</link> { - __u32 cmd; - __u32 flags; - union { - struct { - __u32 data[8]; - } raw; - }; -}; - -#endif - - -/* - * D A T A S E R V I C E S ( V B I ) - * - * Data services API by Michael Schimek - */ - -/* Raw VBI */ -struct <link linkend="v4l2-vbi-format">v4l2_vbi_format</link> { - __u32 sampling_rate; /* in 1 Hz */ - __u32 offset; - __u32 samples_per_line; - __u32 sample_format; /* V4L2_PIX_FMT_* */ - __s32 start[2]; - __u32 count[2]; - __u32 flags; /* V4L2_VBI_* */ - __u32 reserved[2]; /* must be zero */ -}; - -/* VBI flags */ -#define V4L2_VBI_UNSYNC (1 << 0) -#define V4L2_VBI_INTERLACED (1 << 1) - -/* Sliced VBI - * - * This implements is a proposal V4L2 API to allow SLICED VBI - * required for some hardware encoders. It should change without - * notice in the definitive implementation. - */ - -struct <link linkend="v4l2-sliced-vbi-format">v4l2_sliced_vbi_format</link> { - __u16 service_set; - /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field - service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field - (equals frame lines 313-336 for 625 line video - standards, 263-286 for 525 line standards) */ - __u16 service_lines[2][24]; - __u32 io_size; - __u32 reserved[2]; /* must be zero */ -}; - -/* Teletext World System Teletext - (WST), defined on ITU-R BT.653-2 */ -#define V4L2_SLICED_TELETEXT_B (0x0001) -/* Video Program System, defined on ETS 300 231*/ -#define V4L2_SLICED_VPS (0x0400) -/* Closed Caption, defined on EIA-608 */ -#define V4L2_SLICED_CAPTION_525 (0x1000) -/* Wide Screen System, defined on ITU-R BT1119.1 */ -#define V4L2_SLICED_WSS_625 (0x4000) - -#define V4L2_SLICED_VBI_525 (V4L2_SLICED_CAPTION_525) -#define V4L2_SLICED_VBI_625 (V4L2_SLICED_TELETEXT_B | V4L2_SLICED_VPS | V4L2_SLICED_WSS_625) - -struct <link linkend="v4l2-sliced-vbi-cap">v4l2_sliced_vbi_cap</link> { - __u16 service_set; - /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field - service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field - (equals frame lines 313-336 for 625 line video - standards, 263-286 for 525 line standards) */ - __u16 service_lines[2][24]; - enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; - __u32 reserved[3]; /* must be 0 */ -}; - -struct <link linkend="v4l2-sliced-vbi-data">v4l2_sliced_vbi_data</link> { - __u32 id; - __u32 field; /* 0: first field, 1: second field */ - __u32 line; /* 1-23 */ - __u32 reserved; /* must be 0 */ - __u8 data[48]; -}; - -/* - * Sliced VBI data inserted into MPEG Streams - */ - -/* - * V4L2_MPEG_STREAM_VBI_FMT_IVTV: - * - * Structure of payload contained in an MPEG 2 Private Stream 1 PES Packet in an - * MPEG-2 Program Pack that contains V4L2_MPEG_STREAM_VBI_FMT_IVTV Sliced VBI - * data - * - * Note, the MPEG-2 Program Pack and Private Stream 1 PES packet header - * definitions are not included here. See the MPEG-2 specifications for details - * on these headers. - */ - -/* Line type IDs */ -#define V4L2_MPEG_VBI_IVTV_TELETEXT_B (1) -#define V4L2_MPEG_VBI_IVTV_CAPTION_525 (4) -#define V4L2_MPEG_VBI_IVTV_WSS_625 (5) -#define V4L2_MPEG_VBI_IVTV_VPS (7) - -struct <link linkend="v4l2-mpeg-vbi-itv0-line">v4l2_mpeg_vbi_itv0_line</link> { - __u8 id; /* One of V4L2_MPEG_VBI_IVTV_* above */ - __u8 data[42]; /* Sliced VBI data for the line */ -} __attribute__ ((packed)); - -struct <link linkend="v4l2-mpeg-vbi-itv0">v4l2_mpeg_vbi_itv0</link> { - __le32 linemask[2]; /* Bitmasks of VBI service lines present */ - struct <link linkend="v4l2-mpeg-vbi-itv0-line">v4l2_mpeg_vbi_itv0_line</link> line[35]; -} __attribute__ ((packed)); - -struct <link linkend="v4l2-mpeg-vbi-itv0-1">v4l2_mpeg_vbi_ITV0</link> { - struct <link linkend="v4l2-mpeg-vbi-itv0-line">v4l2_mpeg_vbi_itv0_line</link> line[36]; -} __attribute__ ((packed)); - -#define V4L2_MPEG_VBI_IVTV_MAGIC0 "itv0" -#define V4L2_MPEG_VBI_IVTV_MAGIC1 "ITV0" - -struct <link linkend="v4l2-mpeg-vbi-fmt-ivtv">v4l2_mpeg_vbi_fmt_ivtv</link> { - __u8 magic[4]; - union { - struct <link linkend="v4l2-mpeg-vbi-itv0">v4l2_mpeg_vbi_itv0</link> itv0; - struct <link linkend="v4l2-mpeg-vbi-itv0-1">v4l2_mpeg_vbi_ITV0</link> ITV0; - }; -} __attribute__ ((packed)); - -/* - * A G G R E G A T E S T R U C T U R E S - */ - -/** - * struct <link linkend="v4l2-plane-pix-format">v4l2_plane_pix_format</link> - additional, per-plane format definition - * @sizeimage: maximum size in bytes required for data, for which - * this plane will be used - * @bytesperline: distance in bytes between the leftmost pixels in two - * adjacent lines - */ -struct <link linkend="v4l2-plane-pix-format">v4l2_plane_pix_format</link> { - __u32 sizeimage; - __u16 bytesperline; - __u16 reserved[7]; -} __attribute__ ((packed)); - -/** - * struct <link linkend="v4l2-pix-format-mplane">v4l2_pix_format_mplane</link> - multiplanar format definition - * @width: image width in pixels - * @height: image height in pixels - * @pixelformat: little endian four character code (fourcc) - * @field: field order (for interlaced video) - * @colorspace: supplemental to pixelformat - * @plane_fmt: per-plane information - * @num_planes: number of planes for this format - */ -struct <link linkend="v4l2-pix-format-mplane">v4l2_pix_format_mplane</link> { - __u32 width; - __u32 height; - __u32 pixelformat; - enum <link linkend="v4l2-field">v4l2_field</link> field; - enum <link linkend="v4l2-colorspace">v4l2_colorspace</link> colorspace; - - struct <link linkend="v4l2-plane-pix-format">v4l2_plane_pix_format</link> plane_fmt[VIDEO_MAX_PLANES]; - __u8 num_planes; - __u8 reserved[11]; -} __attribute__ ((packed)); - -/** - * struct <link linkend="v4l2-format">v4l2_format</link> - stream data format - * @type: type of the data stream - * @pix: definition of an image format - * @pix_mp: definition of a multiplanar image format - * @win: definition of an overlaid image - * @vbi: raw VBI capture or output parameters - * @sliced: sliced VBI capture or output parameters - * @raw_data: placeholder for future extensions and custom formats - */ -struct <link linkend="v4l2-format">v4l2_format</link> { - enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; - union { - struct <link linkend="v4l2-pix-format">v4l2_pix_format</link> pix; /* V4L2_BUF_TYPE_VIDEO_CAPTURE */ - struct <link linkend="v4l2-pix-format-mplane">v4l2_pix_format_mplane</link> pix_mp; /* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */ - struct <link linkend="v4l2-window">v4l2_window</link> win; /* V4L2_BUF_TYPE_VIDEO_OVERLAY */ - struct <link linkend="v4l2-vbi-format">v4l2_vbi_format</link> vbi; /* V4L2_BUF_TYPE_VBI_CAPTURE */ - struct <link linkend="v4l2-sliced-vbi-format">v4l2_sliced_vbi_format</link> sliced; /* V4L2_BUF_TYPE_SLICED_VBI_CAPTURE */ - __u8 raw_data[200]; /* user-defined */ - } fmt; -}; - -/* Stream type-dependent parameters - */ -struct <link linkend="v4l2-streamparm">v4l2_streamparm</link> { - enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; - union { - struct <link linkend="v4l2-captureparm">v4l2_captureparm</link> capture; - struct <link linkend="v4l2-outputparm">v4l2_outputparm</link> output; - __u8 raw_data[200]; /* user-defined */ - } parm; -}; - -/* - * E V E N T S - */ - -#define V4L2_EVENT_ALL 0 -#define V4L2_EVENT_VSYNC 1 -#define V4L2_EVENT_EOS 2 -#define V4L2_EVENT_PRIVATE_START 0x08000000 - -/* Payload for V4L2_EVENT_VSYNC */ -struct <link linkend="v4l2-event-vsync">v4l2_event_vsync</link> { - /* Can be V4L2_FIELD_ANY, _NONE, _TOP or _BOTTOM */ - __u8 field; -} __attribute__ ((packed)); - -struct <link linkend="v4l2-event">v4l2_event</link> { - __u32 type; - union { - struct <link linkend="v4l2-event-vsync">v4l2_event_vsync</link> vsync; - __u8 data[64]; - } u; - __u32 pending; - __u32 sequence; - struct timespec timestamp; - __u32 reserved[9]; -}; - -struct <link linkend="v4l2-event-subscription">v4l2_event_subscription</link> { - __u32 type; - __u32 reserved[7]; -}; - -/* - * A D V A N C E D D E B U G G I N G - * - * NOTE: EXPERIMENTAL API, NEVER RELY ON THIS IN APPLICATIONS! - * FOR DEBUGGING, TESTING AND INTERNAL USE ONLY! - */ - -/* VIDIOC_DBG_G_REGISTER and VIDIOC_DBG_S_REGISTER */ - -#define V4L2_CHIP_MATCH_HOST 0 /* Match against chip ID on host (0 for the host) */ -#define V4L2_CHIP_MATCH_I2C_DRIVER 1 /* Match against I2C driver name */ -#define V4L2_CHIP_MATCH_I2C_ADDR 2 /* Match against I2C 7-bit address */ -#define V4L2_CHIP_MATCH_AC97 3 /* Match against anciliary AC97 chip */ - -struct <link linkend="v4l2-dbg-match">v4l2_dbg_match</link> { - __u32 type; /* Match type */ - union { /* Match this chip, meaning determined by type */ - __u32 addr; - char name[32]; - }; -} __attribute__ ((packed)); - -struct <link linkend="v4l2-dbg-register">v4l2_dbg_register</link> { - struct <link linkend="v4l2-dbg-match">v4l2_dbg_match</link> match; - __u32 size; /* register size in bytes */ - __u64 reg; - __u64 val; -} __attribute__ ((packed)); - -/* VIDIOC_DBG_G_CHIP_IDENT */ -struct <link linkend="v4l2-dbg-chip-ident">v4l2_dbg_chip_ident</link> { - struct <link linkend="v4l2-dbg-match">v4l2_dbg_match</link> match; - __u32 ident; /* chip identifier as specified in <media/v4l2-chip-ident.h> */ - __u32 revision; /* chip revision, chip specific */ -} __attribute__ ((packed)); - -/* - * I O C T L C O D E S F O R V I D E O D E V I C E S - * - */ -#define VIDIOC_QUERYCAP _IOR('V', 0, struct <link linkend="v4l2-capability">v4l2_capability</link>) -#define VIDIOC_RESERVED _IO('V', 1) -#define VIDIOC_ENUM_FMT _IOWR('V', 2, struct <link linkend="v4l2-fmtdesc">v4l2_fmtdesc</link>) -#define VIDIOC_G_FMT _IOWR('V', 4, struct <link linkend="v4l2-format">v4l2_format</link>) -#define VIDIOC_S_FMT _IOWR('V', 5, struct <link linkend="v4l2-format">v4l2_format</link>) -#define VIDIOC_REQBUFS _IOWR('V', 8, struct <link linkend="v4l2-requestbuffers">v4l2_requestbuffers</link>) -#define VIDIOC_QUERYBUF _IOWR('V', 9, struct <link linkend="v4l2-buffer">v4l2_buffer</link>) -#define VIDIOC_G_FBUF _IOR('V', 10, struct <link linkend="v4l2-framebuffer">v4l2_framebuffer</link>) -#define VIDIOC_S_FBUF _IOW('V', 11, struct <link linkend="v4l2-framebuffer">v4l2_framebuffer</link>) -#define VIDIOC_OVERLAY _IOW('V', 14, int) -#define VIDIOC_QBUF _IOWR('V', 15, struct <link linkend="v4l2-buffer">v4l2_buffer</link>) -#define VIDIOC_DQBUF _IOWR('V', 17, struct <link linkend="v4l2-buffer">v4l2_buffer</link>) -#define VIDIOC_STREAMON _IOW('V', 18, int) -#define VIDIOC_STREAMOFF _IOW('V', 19, int) -#define VIDIOC_G_PARM _IOWR('V', 21, struct <link linkend="v4l2-streamparm">v4l2_streamparm</link>) -#define VIDIOC_S_PARM _IOWR('V', 22, struct <link linkend="v4l2-streamparm">v4l2_streamparm</link>) -#define VIDIOC_G_STD _IOR('V', 23, v4l2_std_id) -#define VIDIOC_S_STD _IOW('V', 24, v4l2_std_id) -#define VIDIOC_ENUMSTD _IOWR('V', 25, struct <link linkend="v4l2-standard">v4l2_standard</link>) -#define VIDIOC_ENUMINPUT _IOWR('V', 26, struct <link linkend="v4l2-input">v4l2_input</link>) -#define VIDIOC_G_CTRL _IOWR('V', 27, struct <link linkend="v4l2-control">v4l2_control</link>) -#define VIDIOC_S_CTRL _IOWR('V', 28, struct <link linkend="v4l2-control">v4l2_control</link>) -#define VIDIOC_G_TUNER _IOWR('V', 29, struct <link linkend="v4l2-tuner">v4l2_tuner</link>) -#define VIDIOC_S_TUNER _IOW('V', 30, struct <link linkend="v4l2-tuner">v4l2_tuner</link>) -#define VIDIOC_G_AUDIO _IOR('V', 33, struct <link linkend="v4l2-audio">v4l2_audio</link>) -#define VIDIOC_S_AUDIO _IOW('V', 34, struct <link linkend="v4l2-audio">v4l2_audio</link>) -#define VIDIOC_QUERYCTRL _IOWR('V', 36, struct <link linkend="v4l2-queryctrl">v4l2_queryctrl</link>) -#define VIDIOC_QUERYMENU _IOWR('V', 37, struct <link linkend="v4l2-querymenu">v4l2_querymenu</link>) -#define VIDIOC_G_INPUT _IOR('V', 38, int) -#define VIDIOC_S_INPUT _IOWR('V', 39, int) -#define VIDIOC_G_OUTPUT _IOR('V', 46, int) -#define VIDIOC_S_OUTPUT _IOWR('V', 47, int) -#define VIDIOC_ENUMOUTPUT _IOWR('V', 48, struct <link linkend="v4l2-output">v4l2_output</link>) -#define VIDIOC_G_AUDOUT _IOR('V', 49, struct <link linkend="v4l2-audioout">v4l2_audioout</link>) -#define VIDIOC_S_AUDOUT _IOW('V', 50, struct <link linkend="v4l2-audioout">v4l2_audioout</link>) -#define VIDIOC_G_MODULATOR _IOWR('V', 54, struct <link linkend="v4l2-modulator">v4l2_modulator</link>) -#define VIDIOC_S_MODULATOR _IOW('V', 55, struct <link linkend="v4l2-modulator">v4l2_modulator</link>) -#define VIDIOC_G_FREQUENCY _IOWR('V', 56, struct <link linkend="v4l2-frequency">v4l2_frequency</link>) -#define VIDIOC_S_FREQUENCY _IOW('V', 57, struct <link linkend="v4l2-frequency">v4l2_frequency</link>) -#define VIDIOC_CROPCAP _IOWR('V', 58, struct <link linkend="v4l2-cropcap">v4l2_cropcap</link>) -#define VIDIOC_G_CROP _IOWR('V', 59, struct <link linkend="v4l2-crop">v4l2_crop</link>) -#define VIDIOC_S_CROP _IOW('V', 60, struct <link linkend="v4l2-crop">v4l2_crop</link>) -#define VIDIOC_G_JPEGCOMP _IOR('V', 61, struct <link linkend="v4l2-jpegcompression">v4l2_jpegcompression</link>) -#define VIDIOC_S_JPEGCOMP _IOW('V', 62, struct <link linkend="v4l2-jpegcompression">v4l2_jpegcompression</link>) -#define VIDIOC_QUERYSTD _IOR('V', 63, v4l2_std_id) -#define VIDIOC_TRY_FMT _IOWR('V', 64, struct <link linkend="v4l2-format">v4l2_format</link>) -#define VIDIOC_ENUMAUDIO _IOWR('V', 65, struct <link linkend="v4l2-audio">v4l2_audio</link>) -#define VIDIOC_ENUMAUDOUT _IOWR('V', 66, struct <link linkend="v4l2-audioout">v4l2_audioout</link>) -#define VIDIOC_G_PRIORITY _IOR('V', 67, enum <link linkend="v4l2-priority">v4l2_priority</link>) -#define VIDIOC_S_PRIORITY _IOW('V', 68, enum <link linkend="v4l2-priority">v4l2_priority</link>) -#define VIDIOC_G_SLICED_VBI_CAP _IOWR('V', 69, struct <link linkend="v4l2-sliced-vbi-cap">v4l2_sliced_vbi_cap</link>) -#define VIDIOC_LOG_STATUS _IO('V', 70) -#define VIDIOC_G_EXT_CTRLS _IOWR('V', 71, struct <link linkend="v4l2-ext-controls">v4l2_ext_controls</link>) -#define VIDIOC_S_EXT_CTRLS _IOWR('V', 72, struct <link linkend="v4l2-ext-controls">v4l2_ext_controls</link>) -#define VIDIOC_TRY_EXT_CTRLS _IOWR('V', 73, struct <link linkend="v4l2-ext-controls">v4l2_ext_controls</link>) -#if 1 -#define VIDIOC_ENUM_FRAMESIZES _IOWR('V', 74, struct <link linkend="v4l2-frmsizeenum">v4l2_frmsizeenum</link>) -#define VIDIOC_ENUM_FRAMEINTERVALS _IOWR('V', 75, struct <link linkend="v4l2-frmivalenum">v4l2_frmivalenum</link>) -#define VIDIOC_G_ENC_INDEX _IOR('V', 76, struct <link linkend="v4l2-enc-idx">v4l2_enc_idx</link>) -#define VIDIOC_ENCODER_CMD _IOWR('V', 77, struct <link linkend="v4l2-encoder-cmd">v4l2_encoder_cmd</link>) -#define VIDIOC_TRY_ENCODER_CMD _IOWR('V', 78, struct <link linkend="v4l2-encoder-cmd">v4l2_encoder_cmd</link>) -#endif - -#if 1 -/* Experimental, meant for debugging, testing and internal use. - Only implemented if CONFIG_VIDEO_ADV_DEBUG is defined. - You must be root to use these ioctls. Never use these in applications! */ -#define VIDIOC_DBG_S_REGISTER _IOW('V', 79, struct <link linkend="v4l2-dbg-register">v4l2_dbg_register</link>) -#define VIDIOC_DBG_G_REGISTER _IOWR('V', 80, struct <link linkend="v4l2-dbg-register">v4l2_dbg_register</link>) - -/* Experimental, meant for debugging, testing and internal use. - Never use this ioctl in applications! */ -#define VIDIOC_DBG_G_CHIP_IDENT _IOWR('V', 81, struct <link linkend="v4l2-dbg-chip-ident">v4l2_dbg_chip_ident</link>) -#endif - -#define VIDIOC_S_HW_FREQ_SEEK _IOW('V', 82, struct <link linkend="v4l2-hw-freq-seek">v4l2_hw_freq_seek</link>) -#define VIDIOC_ENUM_DV_PRESETS _IOWR('V', 83, struct <link linkend="v4l2-dv-enum-preset">v4l2_dv_enum_preset</link>) -#define VIDIOC_S_DV_PRESET _IOWR('V', 84, struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link>) -#define VIDIOC_G_DV_PRESET _IOWR('V', 85, struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link>) -#define VIDIOC_QUERY_DV_PRESET _IOR('V', 86, struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link>) -#define VIDIOC_S_DV_TIMINGS _IOWR('V', 87, struct <link linkend="v4l2-dv-timings">v4l2_dv_timings</link>) -#define VIDIOC_G_DV_TIMINGS _IOWR('V', 88, struct <link linkend="v4l2-dv-timings">v4l2_dv_timings</link>) -#define VIDIOC_DQEVENT _IOR('V', 89, struct <link linkend="v4l2-event">v4l2_event</link>) -#define VIDIOC_SUBSCRIBE_EVENT _IOW('V', 90, struct <link linkend="v4l2-event-subscription">v4l2_event_subscription</link>) -#define VIDIOC_UNSUBSCRIBE_EVENT _IOW('V', 91, struct <link linkend="v4l2-event-subscription">v4l2_event_subscription</link>) - -/* Reminder: when adding new ioctls please add support for them to - drivers/media/video/v4l2-compat-ioctl32.c as well! */ - -#define BASE_VIDIOC_PRIVATE 192 /* 192-255 are private */ - -#endif /* __LINUX_VIDEODEV2_H */ -</programlisting> diff --git a/Documentation/DocBook/v4l/vidioc-dqevent.xml b/Documentation/DocBook/v4l/vidioc-dqevent.xml deleted file mode 100644 index 4e0a7cc..0000000 --- a/Documentation/DocBook/v4l/vidioc-dqevent.xml +++ /dev/null @@ -1,131 +0,0 @@ -<refentry id="vidioc-dqevent"> - <refmeta> - <refentrytitle>ioctl VIDIOC_DQEVENT</refentrytitle> - &manvol; - </refmeta> - - <refnamediv> - <refname>VIDIOC_DQEVENT</refname> - <refpurpose>Dequeue event</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <funcsynopsis> - <funcprototype> - <funcdef>int <function>ioctl</function></funcdef> - <paramdef>int <parameter>fd</parameter></paramdef> - <paramdef>int <parameter>request</parameter></paramdef> - <paramdef>struct v4l2_event -*<parameter>argp</parameter></paramdef> - </funcprototype> - </funcsynopsis> - </refsynopsisdiv> - - <refsect1> - <title>Arguments</title> - - <variablelist> - <varlistentry> - <term><parameter>fd</parameter></term> - <listitem> - <para>&fd;</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>request</parameter></term> - <listitem> - <para>VIDIOC_DQEVENT</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>argp</parameter></term> - <listitem> - <para></para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Description</title> - - <para>Dequeue an event from a video device. No input is required - for this ioctl. All the fields of the &v4l2-event; structure are - filled by the driver. The file handle will also receive exceptions - which the application may get by e.g. using the select system - call.</para> - - <table frame="none" pgwide="1" id="v4l2-event"> - <title>struct <structname>v4l2_event</structname></title> - <tgroup cols="4"> - &cs-str; - <tbody valign="top"> - <row> - <entry>__u32</entry> - <entry><structfield>type</structfield></entry> - <entry></entry> - <entry>Type of the event.</entry> - </row> - <row> - <entry>union</entry> - <entry><structfield>u</structfield></entry> - <entry></entry> - <entry></entry> - </row> - <row> - <entry></entry> - <entry>&v4l2-event-vsync;</entry> - <entry><structfield>vsync</structfield></entry> - <entry>Event data for event V4L2_EVENT_VSYNC. - </entry> - </row> - <row> - <entry></entry> - <entry>__u8</entry> - <entry><structfield>data</structfield>[64]</entry> - <entry>Event data. Defined by the event type. The union - should be used to define easily accessible type for - events.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>pending</structfield></entry> - <entry></entry> - <entry>Number of pending events excluding this one.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>sequence</structfield></entry> - <entry></entry> - <entry>Event sequence number. The sequence number is - incremented for every subscribed event that takes place. - If sequence numbers are not contiguous it means that - events have been lost. - </entry> - </row> - <row> - <entry>struct timespec</entry> - <entry><structfield>timestamp</structfield></entry> - <entry></entry> - <entry>Event timestamp.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>reserved</structfield>[9]</entry> - <entry></entry> - <entry>Reserved for future extensions. Drivers must set - the array to zero.</entry> - </row> - </tbody> - </tgroup> - </table> - - </refsect1> -</refentry> -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/v4l/vidioc-subscribe-event.xml b/Documentation/DocBook/v4l/vidioc-subscribe-event.xml deleted file mode 100644 index 8b50179..0000000 --- a/Documentation/DocBook/v4l/vidioc-subscribe-event.xml +++ /dev/null @@ -1,133 +0,0 @@ -<refentry id="vidioc-subscribe-event"> - <refmeta> - <refentrytitle>ioctl VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refentrytitle> - &manvol; - </refmeta> - - <refnamediv> - <refname>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refname> - <refpurpose>Subscribe or unsubscribe event</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <funcsynopsis> - <funcprototype> - <funcdef>int <function>ioctl</function></funcdef> - <paramdef>int <parameter>fd</parameter></paramdef> - <paramdef>int <parameter>request</parameter></paramdef> - <paramdef>struct v4l2_event_subscription -*<parameter>argp</parameter></paramdef> - </funcprototype> - </funcsynopsis> - </refsynopsisdiv> - - <refsect1> - <title>Arguments</title> - - <variablelist> - <varlistentry> - <term><parameter>fd</parameter></term> - <listitem> - <para>&fd;</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>request</parameter></term> - <listitem> - <para>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>argp</parameter></term> - <listitem> - <para></para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Description</title> - - <para>Subscribe or unsubscribe V4L2 event. Subscribed events are - dequeued by using the &VIDIOC-DQEVENT; ioctl.</para> - - <table frame="none" pgwide="1" id="v4l2-event-subscription"> - <title>struct <structname>v4l2_event_subscription</structname></title> - <tgroup cols="3"> - &cs-str; - <tbody valign="top"> - <row> - <entry>__u32</entry> - <entry><structfield>type</structfield></entry> - <entry>Type of the event.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>reserved</structfield>[7]</entry> - <entry>Reserved for future extensions. Drivers and applications - must set the array to zero.</entry> - </row> - </tbody> - </tgroup> - </table> - - <table frame="none" pgwide="1" id="event-type"> - <title>Event Types</title> - <tgroup cols="3"> - &cs-def; - <tbody valign="top"> - <row> - <entry><constant>V4L2_EVENT_ALL</constant></entry> - <entry>0</entry> - <entry>All events. V4L2_EVENT_ALL is valid only for - VIDIOC_UNSUBSCRIBE_EVENT for unsubscribing all events at once. - </entry> - </row> - <row> - <entry><constant>V4L2_EVENT_VSYNC</constant></entry> - <entry>1</entry> - <entry>This event is triggered on the vertical sync. - This event has &v4l2-event-vsync; associated with it. - </entry> - </row> - <row> - <entry><constant>V4L2_EVENT_EOS</constant></entry> - <entry>2</entry> - <entry>This event is triggered when the end of a stream is reached. - This is typically used with MPEG decoders to report to the application - when the last of the MPEG stream has been decoded. - </entry> - </row> - <row> - <entry><constant>V4L2_EVENT_PRIVATE_START</constant></entry> - <entry>0x08000000</entry> - <entry>Base event number for driver-private events.</entry> - </row> - </tbody> - </tgroup> - </table> - - <table frame="none" pgwide="1" id="v4l2-event-vsync"> - <title>struct <structname>v4l2_event_vsync</structname></title> - <tgroup cols="3"> - &cs-str; - <tbody valign="top"> - <row> - <entry>__u8</entry> - <entry><structfield>field</structfield></entry> - <entry>The upcoming field. See &v4l2-field;.</entry> - </row> - </tbody> - </tgroup> - </table> - - </refsect1> -</refentry> -<!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: ---> diff --git a/Documentation/DocBook/writing-an-alsa-driver.tmpl b/Documentation/DocBook/writing-an-alsa-driver.tmpl index 58ced23..5de23c0 100644 --- a/Documentation/DocBook/writing-an-alsa-driver.tmpl +++ b/Documentation/DocBook/writing-an-alsa-driver.tmpl @@ -1164,7 +1164,7 @@ } chip->port = pci_resource_start(pci, 0); if (request_irq(pci->irq, snd_mychip_interrupt, - IRQF_SHARED, "My Chip", chip)) { + IRQF_SHARED, KBUILD_MODNAME, chip)) { printk(KERN_ERR "cannot grab irq %d\n", pci->irq); snd_mychip_free(chip); return -EBUSY; @@ -1197,7 +1197,7 @@ /* pci_driver definition */ static struct pci_driver driver = { - .name = "My Own Chip", + .name = KBUILD_MODNAME, .id_table = snd_mychip_ids, .probe = snd_mychip_probe, .remove = __devexit_p(snd_mychip_remove), @@ -1340,7 +1340,7 @@ <programlisting> <![CDATA[ if (request_irq(pci->irq, snd_mychip_interrupt, - IRQF_SHARED, "My Chip", chip)) { + IRQF_SHARED, KBUILD_MODNAME, chip)) { printk(KERN_ERR "cannot grab irq %d\n", pci->irq); snd_mychip_free(chip); return -EBUSY; @@ -1616,7 +1616,7 @@ <programlisting> <![CDATA[ static struct pci_driver driver = { - .name = "My Own Chip", + .name = KBUILD_MODNAME, .id_table = snd_mychip_ids, .probe = snd_mychip_probe, .remove = __devexit_p(snd_mychip_remove), @@ -4288,7 +4288,7 @@ struct _snd_pcm_runtime { <![CDATA[ struct snd_rawmidi *rmidi; snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port, info_flags, - irq, irq_flags, &rmidi); + irq, &rmidi); ]]> </programlisting> </informalexample> @@ -4343,6 +4343,13 @@ struct _snd_pcm_runtime { by itself to start processing the output stream in the irq handler. </para> + <para> + If the MPU-401 interface shares its interrupt with the other logical + devices on the card, set <constant>MPU401_INFO_IRQ_HOOK</constant> + (see <link linkend="midi-interface-interrupt-handler"><citetitle> + below</citetitle></link>). + </para> + <para> Usually, the port address corresponds to the command port and port + 1 corresponds to the data port. If not, you may change @@ -4375,14 +4382,12 @@ struct _snd_pcm_runtime { </para> <para> - The 6th argument specifies the irq number for UART. If the irq - is already allocated, pass 0 to the 7th argument - (<parameter>irq_flags</parameter>). Otherwise, pass the flags - for irq allocation - (<constant>SA_XXX</constant> bits) to it, and the irq will be - reserved by the mpu401-uart layer. If the card doesn't generate - UART interrupts, pass -1 as the irq number. Then a timer - interrupt will be invoked for polling. + The 6th argument specifies the ISA irq number that will be + allocated. If no interrupt is to be allocated (because your + code is already allocating a shared interrupt, or because the + device does not use interrupts), pass -1 instead. + For a MPU-401 device without an interrupt, a polling timer + will be used instead. </para> </section> @@ -4390,12 +4395,13 @@ struct _snd_pcm_runtime { <title>Interrupt Handler</title> <para> When the interrupt is allocated in - <function>snd_mpu401_uart_new()</function>, the private - interrupt handler is used, hence you don't have anything else to do - than creating the mpu401 stuff. Otherwise, you have to call - <function>snd_mpu401_uart_interrupt()</function> explicitly when - a UART interrupt is invoked and checked in your own interrupt - handler. + <function>snd_mpu401_uart_new()</function>, an exclusive ISA + interrupt handler is automatically used, hence you don't have + anything else to do than creating the mpu401 stuff. Otherwise, you + have to set <constant>MPU401_INFO_IRQ_HOOK</constant>, and call + <function>snd_mpu401_uart_interrupt()</function> explicitly from your + own interrupt handler when it has determined that a UART interrupt + has occurred. </para> <para> @@ -5816,7 +5822,7 @@ struct _snd_pcm_runtime { <programlisting> <![CDATA[ static struct pci_driver driver = { - .name = "My Chip", + .name = KBUILD_MODNAME, .id_table = snd_my_ids, .probe = snd_my_probe, .remove = __devexit_p(snd_my_remove), diff --git a/Documentation/PCI/MSI-HOWTO.txt b/Documentation/PCI/MSI-HOWTO.txt index 3f5e0b0..53e6fca 100644 --- a/Documentation/PCI/MSI-HOWTO.txt +++ b/Documentation/PCI/MSI-HOWTO.txt @@ -45,7 +45,7 @@ arrived in memory (this becomes more likely with devices behind PCI-PCI bridges). In order to ensure that all the data has arrived in memory, the interrupt handler must read a register on the device which raised the interrupt. PCI transaction ordering rules require that all the data -arrives in memory before the value can be returned from the register. +arrive in memory before the value may be returned from the register. Using MSIs avoids this problem as the interrupt-generating write cannot pass the data writes, so by the time the interrupt is raised, the driver knows that all the data has arrived in memory. @@ -86,13 +86,13 @@ device. int pci_enable_msi(struct pci_dev *dev) -A successful call will allocate ONE interrupt to the device, regardless -of how many MSIs the device supports. The device will be switched from +A successful call allocates ONE interrupt to the device, regardless +of how many MSIs the device supports. The device is switched from pin-based interrupt mode to MSI mode. The dev->irq number is changed -to a new number which represents the message signaled interrupt. -This function should be called before the driver calls request_irq() -since enabling MSIs disables the pin-based IRQ and the driver will not -receive interrupts on the old interrupt. +to a new number which represents the message signaled interrupt; +consequently, this function should be called before the driver calls +request_irq(), because an MSI is delivered via a vector that is +different from the vector of a pin-based interrupt. 4.2.2 pci_enable_msi_block @@ -111,20 +111,20 @@ the device are in the range dev->irq to dev->irq + count - 1. If this function returns a negative number, it indicates an error and the driver should not attempt to request any more MSI interrupts for -this device. If this function returns a positive number, it will be -less than 'count' and indicate the number of interrupts that could have -been allocated. In neither case will the irq value have been -updated, nor will the device have been switched into MSI mode. +this device. If this function returns a positive number, it is +less than 'count' and indicates the number of interrupts that could have +been allocated. In neither case is the irq value updated or the device +switched into MSI mode. The device driver must decide what action to take if -pci_enable_msi_block() returns a value less than the number asked for. -Some devices can make use of fewer interrupts than the maximum they -request; in this case the driver should call pci_enable_msi_block() +pci_enable_msi_block() returns a value less than the number requested. +For instance, the driver could still make use of fewer interrupts; +in this case the driver should call pci_enable_msi_block() again. Note that it is not guaranteed to succeed, even when the 'count' has been reduced to the value returned from a previous call to pci_enable_msi_block(). This is because there are multiple constraints on the number of vectors that can be allocated; pci_enable_msi_block() -will return as soon as it finds any constraint that doesn't allow the +returns as soon as it finds any constraint that doesn't allow the call to succeed. 4.2.3 pci_disable_msi @@ -137,10 +137,10 @@ interrupt number and frees the previously allocated message signaled interrupt(s). The interrupt may subsequently be assigned to another device, so drivers should not cache the value of dev->irq. -A device driver must always call free_irq() on the interrupt(s) -for which it has called request_irq() before calling this function. -Failure to do so will result in a BUG_ON(), the device will be left with -MSI enabled and will leak its vector. +Before calling this function, a device driver must always call free_irq() +on any interrupt for which it previously called request_irq(). +Failure to do so results in a BUG_ON(), leaving the device with +MSI enabled and thus leaking its vector. 4.3 Using MSI-X @@ -155,10 +155,10 @@ struct msix_entry { }; This allows for the device to use these interrupts in a sparse fashion; -for example it could use interrupts 3 and 1027 and allocate only a +for example, it could use interrupts 3 and 1027 and yet allocate only a two-element array. The driver is expected to fill in the 'entry' value -in each element of the array to indicate which entries it wants the kernel -to assign interrupts for. It is invalid to fill in two entries with the +in each element of the array to indicate for which entries the kernel +should assign interrupts; it is invalid to fill in two entries with the same number. 4.3.1 pci_enable_msix @@ -168,10 +168,11 @@ int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec) Calling this function asks the PCI subsystem to allocate 'nvec' MSIs. The 'entries' argument is a pointer to an array of msix_entry structs which should be at least 'nvec' entries in size. On success, the -function will return 0 and the device will have been switched into -MSI-X interrupt mode. The 'vector' elements in each entry will have -been filled in with the interrupt number. The driver should then call -request_irq() for each 'vector' that it decides to use. +device is switched into MSI-X mode and the function returns 0. +The 'vector' member in each entry is populated with the interrupt number; +the driver should then call request_irq() for each 'vector' that it +decides to use. The device driver is responsible for keeping track of the +interrupts assigned to the MSI-X vectors so it can free them again later. If this function returns a negative number, it indicates an error and the driver should not attempt to allocate any more MSI-X interrupts for @@ -181,16 +182,14 @@ below. This function, in contrast with pci_enable_msi(), does not adjust dev->irq. The device will not generate interrupts for this interrupt -number once MSI-X is enabled. The device driver is responsible for -keeping track of the interrupts assigned to the MSI-X vectors so it can -free them again later. +number once MSI-X is enabled. Device drivers should normally call this function once per device during the initialization phase. -It is ideal if drivers can cope with a variable number of MSI-X interrupts, +It is ideal if drivers can cope with a variable number of MSI-X interrupts; there are many reasons why the platform may not be able to provide the -exact number a driver asks for. +exact number that a driver asks for. A request loop to achieve that might look like: @@ -212,15 +211,15 @@ static int foo_driver_enable_msix(struct foo_adapter *adapter, int nvec) void pci_disable_msix(struct pci_dev *dev) -This API should be used to undo the effect of pci_enable_msix(). It frees +This function should be used to undo the effect of pci_enable_msix(). It frees the previously allocated message signaled interrupts. The interrupts may subsequently be assigned to another device, so drivers should not cache the value of the 'vector' elements over a call to pci_disable_msix(). -A device driver must always call free_irq() on the interrupt(s) -for which it has called request_irq() before calling this function. -Failure to do so will result in a BUG_ON(), the device will be left with -MSI enabled and will leak its vector. +Before calling this function, a device driver must always call free_irq() +on any interrupt for which it previously called request_irq(). +Failure to do so results in a BUG_ON(), leaving the device with +MSI-X enabled and thus leaking its vector. 4.3.3 The MSI-X Table @@ -232,10 +231,10 @@ mask or unmask an interrupt, it should call disable_irq() / enable_irq(). 4.4 Handling devices implementing both MSI and MSI-X capabilities If a device implements both MSI and MSI-X capabilities, it can -run in either MSI mode or MSI-X mode but not both simultaneously. +run in either MSI mode or MSI-X mode, but not both simultaneously. This is a requirement of the PCI spec, and it is enforced by the PCI layer. Calling pci_enable_msi() when MSI-X is already enabled or -pci_enable_msix() when MSI is already enabled will result in an error. +pci_enable_msix() when MSI is already enabled results in an error. If a device driver wishes to switch between MSI and MSI-X at runtime, it must first quiesce the device, then switch it back to pin-interrupt mode, before calling pci_enable_msi() or pci_enable_msix() and resuming @@ -251,7 +250,7 @@ the MSI-X facilities in preference to the MSI facilities. As mentioned above, MSI-X supports any number of interrupts between 1 and 2048. In constrast, MSI is restricted to a maximum of 32 interrupts (and must be a power of two). In addition, the MSI interrupt vectors must -be allocated consecutively, so the system may not be able to allocate +be allocated consecutively, so the system might not be able to allocate as many vectors for MSI as it could for MSI-X. On some platforms, MSI interrupts must all be targeted at the same set of CPUs whereas MSI-X interrupts can all be targeted at different CPUs. @@ -281,7 +280,7 @@ disabled to enabled and back again. Using 'lspci -v' (as root) may show some devices with "MSI", "Message Signalled Interrupts" or "MSI-X" capabilities. Each of these capabilities -has an 'Enable' flag which will be followed with either "+" (enabled) +has an 'Enable' flag which is followed with either "+" (enabled) or "-" (disabled). @@ -298,7 +297,7 @@ The PCI stack provides three ways to disable MSIs: Some host chipsets simply don't support MSIs properly. If we're lucky, the manufacturer knows this and has indicated it in the ACPI -FADT table. In this case, Linux will automatically disable MSIs. +FADT table. In this case, Linux automatically disables MSIs. Some boards don't include this information in the table and so we have to detect them ourselves. The complete list of these is found near the quirk_disable_all_msi() function in drivers/pci/quirks.c. @@ -317,7 +316,7 @@ Some bridges allow you to enable MSIs by changing some bits in their PCI configuration space (especially the Hypertransport chipsets such as the nVidia nForce and Serverworks HT2000). As with host chipsets, Linux mostly knows about them and automatically enables MSIs if it can. -If you have a bridge which Linux doesn't yet know about, you can enable +If you have a bridge unknown to Linux, you can enable MSIs in configuration space using whatever method you know works, then enable MSIs on that bridge by doing: @@ -327,7 +326,7 @@ where $bridge is the PCI address of the bridge you've enabled (eg 0000:00:0e.0). To disable MSIs, echo 0 instead of 1. Changing this value should be -done with caution as it can break interrupt handling for all devices +done with caution as it could break interrupt handling for all devices below this bridge. Again, please notify linux-pci@vger.kernel.org of any bridges that need @@ -336,7 +335,7 @@ special handling. 5.3. Disabling MSIs on a single device Some devices are known to have faulty MSI implementations. Usually this -is handled in the individual device driver but occasionally it's necessary +is handled in the individual device driver, but occasionally it's necessary to handle this with a quirk. Some drivers have an option to disable use of MSI. While this is a convenient workaround for the driver author, it is not good practise, and should not be emulated. @@ -350,7 +349,7 @@ for your machine. You should also check your .config to be sure you have enabled CONFIG_PCI_MSI. Then, 'lspci -t' gives the list of bridges above a device. Reading -/sys/bus/pci/devices/*/msi_bus will tell you whether MSI are enabled (1) +/sys/bus/pci/devices/*/msi_bus will tell you whether MSIs are enabled (1) or disabled (0). If 0 is found in any of the msi_bus files belonging to bridges between the PCI root and the device, MSIs are disabled. diff --git a/Documentation/PCI/pci.txt b/Documentation/PCI/pci.txt index 6148d40..aa09e54 100644 --- a/Documentation/PCI/pci.txt +++ b/Documentation/PCI/pci.txt @@ -314,7 +314,7 @@ from the PCI device config space. Use the values in the pci_dev structure as the PCI "bus address" might have been remapped to a "host physical" address by the arch/chip-set specific kernel support. -See Documentation/IO-mapping.txt for how to access device registers +See Documentation/io-mapping.txt for how to access device registers or device memory. The device driver needs to call pci_request_region() to verify diff --git a/Documentation/RCU/NMI-RCU.txt b/Documentation/RCU/NMI-RCU.txt index a8536cb..687777f 100644 --- a/Documentation/RCU/NMI-RCU.txt +++ b/Documentation/RCU/NMI-RCU.txt @@ -5,8 +5,8 @@ Although RCU is usually used to protect read-mostly data structures, it is possible to use RCU to provide dynamic non-maskable interrupt handlers, as well as dynamic irq handlers. This document describes how to do this, drawing loosely from Zwane Mwaikambo's NMI-timer -work in "arch/i386/oprofile/nmi_timer_int.c" and in -"arch/i386/kernel/traps.c". +work in "arch/x86/oprofile/nmi_timer_int.c" and in +"arch/x86/kernel/traps.c". The relevant pieces of code are listed below, each followed by a brief explanation. @@ -95,7 +95,7 @@ not to return until all ongoing NMI handlers exit. It is therefore safe to free up the handler's data as soon as synchronize_sched() returns. Important note: for this to work, the architecture in question must -invoke irq_enter() and irq_exit() on NMI entry and exit, respectively. +invoke nmi_enter() and nmi_exit() on NMI entry and exit, respectively. Answer to Quick Quiz diff --git a/Documentation/RCU/lockdep-splat.txt b/Documentation/RCU/lockdep-splat.txt new file mode 100644 index 0000000..bf90611 --- /dev/null +++ b/Documentation/RCU/lockdep-splat.txt @@ -0,0 +1,110 @@ +Lockdep-RCU was added to the Linux kernel in early 2010 +(http://lwn.net/Articles/371986/). This facility checks for some common +misuses of the RCU API, most notably using one of the rcu_dereference() +family to access an RCU-protected pointer without the proper protection. +When such misuse is detected, an lockdep-RCU splat is emitted. + +The usual cause of a lockdep-RCU slat is someone accessing an +RCU-protected data structure without either (1) being in the right kind of +RCU read-side critical section or (2) holding the right update-side lock. +This problem can therefore be serious: it might result in random memory +overwriting or worse. There can of course be false positives, this +being the real world and all that. + +So let's look at an example RCU lockdep splat from 3.0-rc5, one that +has long since been fixed: + +=============================== +[ INFO: suspicious RCU usage. ] +------------------------------- +block/cfq-iosched.c:2776 suspicious rcu_dereference_protected() usage! + +other info that might help us debug this: + + +rcu_scheduler_active = 1, debug_locks = 0 +3 locks held by scsi_scan_6/1552: + #0: (&shost->scan_mutex){+.+.+.}, at: [<ffffffff8145efca>] +scsi_scan_host_selected+0x5a/0x150 + #1: (&eq->sysfs_lock){+.+...}, at: [<ffffffff812a5032>] +elevator_exit+0x22/0x60 + #2: (&(&q->__queue_lock)->rlock){-.-...}, at: [<ffffffff812b6233>] +cfq_exit_queue+0x43/0x190 + +stack backtrace: +Pid: 1552, comm: scsi_scan_6 Not tainted 3.0.0-rc5 #17 +Call Trace: + [<ffffffff810abb9b>] lockdep_rcu_dereference+0xbb/0xc0 + [<ffffffff812b6139>] __cfq_exit_single_io_context+0xe9/0x120 + [<ffffffff812b626c>] cfq_exit_queue+0x7c/0x190 + [<ffffffff812a5046>] elevator_exit+0x36/0x60 + [<ffffffff812a802a>] blk_cleanup_queue+0x4a/0x60 + [<ffffffff8145cc09>] scsi_free_queue+0x9/0x10 + [<ffffffff81460944>] __scsi_remove_device+0x84/0xd0 + [<ffffffff8145dca3>] scsi_probe_and_add_lun+0x353/0xb10 + [<ffffffff817da069>] ? error_exit+0x29/0xb0 + [<ffffffff817d98ed>] ? _raw_spin_unlock_irqrestore+0x3d/0x80 + [<ffffffff8145e722>] __scsi_scan_target+0x112/0x680 + [<ffffffff812c690d>] ? trace_hardirqs_off_thunk+0x3a/0x3c + [<ffffffff817da069>] ? error_exit+0x29/0xb0 + [<ffffffff812bcc60>] ? kobject_del+0x40/0x40 + [<ffffffff8145ed16>] scsi_scan_channel+0x86/0xb0 + [<ffffffff8145f0b0>] scsi_scan_host_selected+0x140/0x150 + [<ffffffff8145f149>] do_scsi_scan_host+0x89/0x90 + [<ffffffff8145f170>] do_scan_async+0x20/0x160 + [<ffffffff8145f150>] ? do_scsi_scan_host+0x90/0x90 + [<ffffffff810975b6>] kthread+0xa6/0xb0 + [<ffffffff817db154>] kernel_thread_helper+0x4/0x10 + [<ffffffff81066430>] ? finish_task_switch+0x80/0x110 + [<ffffffff817d9c04>] ? retint_restore_args+0xe/0xe + [<ffffffff81097510>] ? __init_kthread_worker+0x70/0x70 + [<ffffffff817db150>] ? gs_change+0xb/0xb + +Line 2776 of block/cfq-iosched.c in v3.0-rc5 is as follows: + + if (rcu_dereference(ioc->ioc_data) == cic) { + +This form says that it must be in a plain vanilla RCU read-side critical +section, but the "other info" list above shows that this is not the +case. Instead, we hold three locks, one of which might be RCU related. +And maybe that lock really does protect this reference. If so, the fix +is to inform RCU, perhaps by changing __cfq_exit_single_io_context() to +take the struct request_queue "q" from cfq_exit_queue() as an argument, +which would permit us to invoke rcu_dereference_protected as follows: + + if (rcu_dereference_protected(ioc->ioc_data, + lockdep_is_held(&q->queue_lock)) == cic) { + +With this change, there would be no lockdep-RCU splat emitted if this +code was invoked either from within an RCU read-side critical section +or with the ->queue_lock held. In particular, this would have suppressed +the above lockdep-RCU splat because ->queue_lock is held (see #2 in the +list above). + +On the other hand, perhaps we really do need an RCU read-side critical +section. In this case, the critical section must span the use of the +return value from rcu_dereference(), or at least until there is some +reference count incremented or some such. One way to handle this is to +add rcu_read_lock() and rcu_read_unlock() as follows: + + rcu_read_lock(); + if (rcu_dereference(ioc->ioc_data) == cic) { + spin_lock(&ioc->lock); + rcu_assign_pointer(ioc->ioc_data, NULL); + spin_unlock(&ioc->lock); + } + rcu_read_unlock(); + +With this change, the rcu_dereference() is always within an RCU +read-side critical section, which again would have suppressed the +above lockdep-RCU splat. + +But in this particular case, we don't actually deference the pointer +returned from rcu_dereference(). Instead, that pointer is just compared +to the cic pointer, which means that the rcu_dereference() can be replaced +by rcu_access_pointer() as follows: + + if (rcu_access_pointer(ioc->ioc_data) == cic) { + +Because it is legal to invoke rcu_access_pointer() without protection, +this change would also suppress the above lockdep-RCU splat. diff --git a/Documentation/RCU/lockdep.txt b/Documentation/RCU/lockdep.txt index d7a49b2..a102d4b 100644 --- a/Documentation/RCU/lockdep.txt +++ b/Documentation/RCU/lockdep.txt @@ -32,9 +32,27 @@ checking of rcu_dereference() primitives: srcu_dereference(p, sp): Check for SRCU read-side critical section. rcu_dereference_check(p, c): - Use explicit check expression "c". This is useful in - code that is invoked by both readers and updaters. - rcu_dereference_raw(p) + Use explicit check expression "c" along with + rcu_read_lock_held(). This is useful in code that is + invoked by both RCU readers and updaters. + rcu_dereference_bh_check(p, c): + Use explicit check expression "c" along with + rcu_read_lock_bh_held(). This is useful in code that + is invoked by both RCU-bh readers and updaters. + rcu_dereference_sched_check(p, c): + Use explicit check expression "c" along with + rcu_read_lock_sched_held(). This is useful in code that + is invoked by both RCU-sched readers and updaters. + srcu_dereference_check(p, c): + Use explicit check expression "c" along with + srcu_read_lock_held()(). This is useful in code that + is invoked by both SRCU readers and updaters. + rcu_dereference_index_check(p, c): + Use explicit check expression "c", but the caller + must supply one of the rcu_read_lock_held() functions. + This is useful in code that uses RCU-protected arrays + that is invoked by both RCU readers and updaters. + rcu_dereference_raw(p): Don't check. (Use sparingly, if at all.) rcu_dereference_protected(p, c): Use explicit check expression "c", and omit all barriers @@ -48,13 +66,11 @@ checking of rcu_dereference() primitives: value of the pointer itself, for example, against NULL. The rcu_dereference_check() check expression can be any boolean -expression, but would normally include one of the rcu_read_lock_held() -family of functions and a lockdep expression. However, any boolean -expression can be used. For a moderately ornate example, consider -the following: +expression, but would normally include a lockdep expression. However, +any boolean expression can be used. For a moderately ornate example, +consider the following: file = rcu_dereference_check(fdt->fd[fd], - rcu_read_lock_held() || lockdep_is_held(&files->file_lock) || atomic_read(&files->count) == 1); @@ -62,7 +78,7 @@ This expression picks up the pointer "fdt->fd[fd]" in an RCU-safe manner, and, if CONFIG_PROVE_RCU is configured, verifies that this expression is used in: -1. An RCU read-side critical section, or +1. An RCU read-side critical section (implicit), or 2. with files->file_lock held, or 3. on an unshared files_struct. diff --git a/Documentation/RCU/torture.txt b/Documentation/RCU/torture.txt index 5d90167..783d6c1 100644 --- a/Documentation/RCU/torture.txt +++ b/Documentation/RCU/torture.txt @@ -42,7 +42,7 @@ fqs_holdoff Holdoff time (in microseconds) between consecutive calls fqs_stutter Wait time (in seconds) between consecutive bursts of calls to force_quiescent_state(). -irqreaders Says to invoke RCU readers from irq level. This is currently +irqreader Says to invoke RCU readers from irq level. This is currently done via timers. Defaults to "1" for variants of RCU that permit this. (Or, more accurately, variants of RCU that do -not- permit this know to ignore this variable.) @@ -79,19 +79,68 @@ stutter The length of time to run the test before pausing for this Specifying "stutter=0" causes the test to run continuously without pausing, which is the old default behavior. +test_boost Whether or not to test the ability of RCU to do priority + boosting. Defaults to "test_boost=1", which performs + RCU priority-inversion testing only if the selected + RCU implementation supports priority boosting. Specifying + "test_boost=0" never performs RCU priority-inversion + testing. Specifying "test_boost=2" performs RCU + priority-inversion testing even if the selected RCU + implementation does not support RCU priority boosting, + which can be used to test rcutorture's ability to + carry out RCU priority-inversion testing. + +test_boost_interval + The number of seconds in an RCU priority-inversion test + cycle. Defaults to "test_boost_interval=7". It is + usually wise for this value to be relatively prime to + the value selected for "stutter". + +test_boost_duration + The number of seconds to do RCU priority-inversion testing + within any given "test_boost_interval". Defaults to + "test_boost_duration=4". + test_no_idle_hz Whether or not to test the ability of RCU to operate in a kernel that disables the scheduling-clock interrupt to idle CPUs. Boolean parameter, "1" to test, "0" otherwise. Defaults to omitting this test. -torture_type The type of RCU to test: "rcu" for the rcu_read_lock() API, - "rcu_sync" for rcu_read_lock() with synchronous reclamation, - "rcu_bh" for the rcu_read_lock_bh() API, "rcu_bh_sync" for - rcu_read_lock_bh() with synchronous reclamation, "srcu" for - the "srcu_read_lock()" API, "sched" for the use of - preempt_disable() together with synchronize_sched(), - and "sched_expedited" for the use of preempt_disable() - with synchronize_sched_expedited(). +torture_type The type of RCU to test, with string values as follows: + + "rcu": rcu_read_lock(), rcu_read_unlock() and call_rcu(). + + "rcu_sync": rcu_read_lock(), rcu_read_unlock(), and + synchronize_rcu(). + + "rcu_expedited": rcu_read_lock(), rcu_read_unlock(), and + synchronize_rcu_expedited(). + + "rcu_bh": rcu_read_lock_bh(), rcu_read_unlock_bh(), and + call_rcu_bh(). + + "rcu_bh_sync": rcu_read_lock_bh(), rcu_read_unlock_bh(), + and synchronize_rcu_bh(). + + "rcu_bh_expedited": rcu_read_lock_bh(), rcu_read_unlock_bh(), + and synchronize_rcu_bh_expedited(). + + "srcu": srcu_read_lock(), srcu_read_unlock() and + synchronize_srcu(). + + "srcu_expedited": srcu_read_lock(), srcu_read_unlock() and + synchronize_srcu_expedited(). + + "sched": preempt_disable(), preempt_enable(), and + call_rcu_sched(). + + "sched_sync": preempt_disable(), preempt_enable(), and + synchronize_sched(). + + "sched_expedited": preempt_disable(), preempt_enable(), and + synchronize_sched_expedited(). + + Defaults to "rcu". verbose Enable debug printk()s. Default is disabled. @@ -100,12 +149,12 @@ OUTPUT The statistics output is as follows: - rcu-torture: --- Start of test: nreaders=16 stat_interval=0 verbose=0 - rcu-torture: rtc: 0000000000000000 ver: 1916 tfle: 0 rta: 1916 rtaf: 0 rtf: 1915 - rcu-torture: Reader Pipe: 1466408 9747 0 0 0 0 0 0 0 0 0 - rcu-torture: Reader Batch: 1464477 11678 0 0 0 0 0 0 0 0 - rcu-torture: Free-Block Circulation: 1915 1915 1915 1915 1915 1915 1915 1915 1915 1915 0 - rcu-torture: --- End of test + rcu-torture:--- Start of test: nreaders=16 nfakewriters=4 stat_interval=30 verbose=0 test_no_idle_hz=1 shuffle_interval=3 stutter=5 irqreader=1 fqs_duration=0 fqs_holdoff=0 fqs_stutter=3 test_boost=1/0 test_boost_interval=7 test_boost_duration=4 + rcu-torture: rtc: (null) ver: 155441 tfle: 0 rta: 155441 rtaf: 8884 rtf: 155440 rtmbe: 0 rtbke: 0 rtbre: 0 rtbf: 0 rtb: 0 nt: 3055767 + rcu-torture: Reader Pipe: 727860534 34213 0 0 0 0 0 0 0 0 0 + rcu-torture: Reader Batch: 727877838 17003 0 0 0 0 0 0 0 0 0 + rcu-torture: Free-Block Circulation: 155440 155440 155440 155440 155440 155440 155440 155440 155440 155440 0 + rcu-torture:--- End of test: SUCCESS: nreaders=16 nfakewriters=4 stat_interval=30 verbose=0 test_no_idle_hz=1 shuffle_interval=3 stutter=5 irqreader=1 fqs_duration=0 fqs_holdoff=0 fqs_stutter=3 test_boost=1/0 test_boost_interval=7 test_boost_duration=4 The command "dmesg | grep torture:" will extract this information on most systems. On more esoteric configurations, it may be necessary to @@ -113,26 +162,55 @@ use other commands to access the output of the printk()s used by the RCU torture test. The printk()s use KERN_ALERT, so they should be evident. ;-) +The first and last lines show the rcutorture module parameters, and the +last line shows either "SUCCESS" or "FAILURE", based on rcutorture's +automatic determination as to whether RCU operated correctly. + The entries are as follows: o "rtc": The hexadecimal address of the structure currently visible to readers. -o "ver": The number of times since boot that the rcutw writer task +o "ver": The number of times since boot that the RCU writer task has changed the structure visible to readers. o "tfle": If non-zero, indicates that the "torture freelist" - containing structure to be placed into the "rtc" area is empty. + containing structures to be placed into the "rtc" area is empty. This condition is important, since it can fool you into thinking that RCU is working when it is not. :-/ o "rta": Number of structures allocated from the torture freelist. o "rtaf": Number of allocations from the torture freelist that have - failed due to the list being empty. + failed due to the list being empty. It is not unusual for this + to be non-zero, but it is bad for it to be a large fraction of + the value indicated by "rta". o "rtf": Number of frees into the torture freelist. +o "rtmbe": A non-zero value indicates that rcutorture believes that + rcu_assign_pointer() and rcu_dereference() are not working + correctly. This value should be zero. + +o "rtbke": rcutorture was unable to create the real-time kthreads + used to force RCU priority inversion. This value should be zero. + +o "rtbre": Although rcutorture successfully created the kthreads + used to force RCU priority inversion, it was unable to set them + to the real-time priority level of 1. This value should be zero. + +o "rtbf": The number of times that RCU priority boosting failed + to resolve RCU priority inversion. + +o "rtb": The number of times that rcutorture attempted to force + an RCU priority inversion condition. If you are testing RCU + priority boosting via the "test_boost" module parameter, this + value should be non-zero. + +o "nt": The number of times rcutorture ran RCU read-side code from + within a timer handler. This value should be non-zero only + if you specified the "irqreader" module parameter. + o "Reader Pipe": Histogram of "ages" of structures seen by readers. If any entries past the first two are non-zero, RCU is broken. And rcutorture prints the error flag string "!!!" to make sure @@ -162,26 +240,15 @@ o "Free-Block Circulation": Shows the number of torture structures somehow gets incremented farther than it should. Different implementations of RCU can provide implementation-specific -additional information. For example, SRCU provides the following: +additional information. For example, SRCU provides the following +additional line: - srcu-torture: rtc: f8cf46a8 ver: 355 tfle: 0 rta: 356 rtaf: 0 rtf: 346 rtmbe: 0 - srcu-torture: Reader Pipe: 559738 939 0 0 0 0 0 0 0 0 0 - srcu-torture: Reader Batch: 560434 243 0 0 0 0 0 0 0 0 - srcu-torture: Free-Block Circulation: 355 354 353 352 351 350 349 348 347 346 0 srcu-torture: per-CPU(idx=1): 0(0,1) 1(0,1) 2(0,0) 3(0,1) -The first four lines are similar to those for RCU. The last line shows -the per-CPU counter state. The numbers in parentheses are the values -of the "old" and "current" counters for the corresponding CPU. The -"idx" value maps the "old" and "current" values to the underlying array, -and is useful for debugging. - -Similarly, sched_expedited RCU provides the following: - - sched_expedited-torture: rtc: d0000000016c1880 ver: 1090796 tfle: 0 rta: 1090796 rtaf: 0 rtf: 1090787 rtmbe: 0 nt: 27713319 - sched_expedited-torture: Reader Pipe: 12660320201 95875 0 0 0 0 0 0 0 0 0 - sched_expedited-torture: Reader Batch: 12660424885 0 0 0 0 0 0 0 0 0 0 - sched_expedited-torture: Free-Block Circulation: 1090795 1090795 1090794 1090793 1090792 1090791 1090790 1090789 1090788 1090787 0 +This line shows the per-CPU counter state. The numbers in parentheses are +the values of the "old" and "current" counters for the corresponding CPU. +The "idx" value maps the "old" and "current" values to the underlying +array, and is useful for debugging. USAGE diff --git a/Documentation/RCU/trace.txt b/Documentation/RCU/trace.txt index 8173cec..aaf65f6 100644 --- a/Documentation/RCU/trace.txt +++ b/Documentation/RCU/trace.txt @@ -33,23 +33,23 @@ rcu/rcuboost: The output of "cat rcu/rcudata" looks as follows: rcu_sched: - 0 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=545/1/0 df=50 of=0 ri=0 ql=163 qs=NRW. kt=0/W/0 ktl=ebc3 b=10 ci=153737 co=0 ca=0 - 1 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=967/1/0 df=58 of=0 ri=0 ql=634 qs=NRW. kt=0/W/1 ktl=58c b=10 ci=191037 co=0 ca=0 - 2 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=1081/1/0 df=175 of=0 ri=0 ql=74 qs=N.W. kt=0/W/2 ktl=da94 b=10 ci=75991 co=0 ca=0 - 3 c=20942 g=20943 pq=1 pqc=20942 qp=1 dt=1846/0/0 df=404 of=0 ri=0 ql=0 qs=.... kt=0/W/3 ktl=d1cd b=10 ci=72261 co=0 ca=0 - 4 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=369/1/0 df=83 of=0 ri=0 ql=48 qs=N.W. kt=0/W/4 ktl=e0e7 b=10 ci=128365 co=0 ca=0 - 5 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=381/1/0 df=64 of=0 ri=0 ql=169 qs=NRW. kt=0/W/5 ktl=fb2f b=10 ci=164360 co=0 ca=0 - 6 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=1037/1/0 df=183 of=0 ri=0 ql=62 qs=N.W. kt=0/W/6 ktl=d2ad b=10 ci=65663 co=0 ca=0 - 7 c=20897 g=20897 pq=1 pqc=20896 qp=0 dt=1572/0/0 df=382 of=0 ri=0 ql=0 qs=.... kt=0/W/7 ktl=cf15 b=10 ci=75006 co=0 ca=0 + 0 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=545/1/0 df=50 of=0 ri=0 ql=163 qs=NRW. kt=0/W/0 ktl=ebc3 b=10 ci=153737 co=0 ca=0 + 1 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=967/1/0 df=58 of=0 ri=0 ql=634 qs=NRW. kt=0/W/1 ktl=58c b=10 ci=191037 co=0 ca=0 + 2 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=1081/1/0 df=175 of=0 ri=0 ql=74 qs=N.W. kt=0/W/2 ktl=da94 b=10 ci=75991 co=0 ca=0 + 3 c=20942 g=20943 pq=1 pgp=20942 qp=1 dt=1846/0/0 df=404 of=0 ri=0 ql=0 qs=.... kt=0/W/3 ktl=d1cd b=10 ci=72261 co=0 ca=0 + 4 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=369/1/0 df=83 of=0 ri=0 ql=48 qs=N.W. kt=0/W/4 ktl=e0e7 b=10 ci=128365 co=0 ca=0 + 5 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=381/1/0 df=64 of=0 ri=0 ql=169 qs=NRW. kt=0/W/5 ktl=fb2f b=10 ci=164360 co=0 ca=0 + 6 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=1037/1/0 df=183 of=0 ri=0 ql=62 qs=N.W. kt=0/W/6 ktl=d2ad b=10 ci=65663 co=0 ca=0 + 7 c=20897 g=20897 pq=1 pgp=20896 qp=0 dt=1572/0/0 df=382 of=0 ri=0 ql=0 qs=.... kt=0/W/7 ktl=cf15 b=10 ci=75006 co=0 ca=0 rcu_bh: - 0 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=545/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/0 ktl=ebc3 b=10 ci=0 co=0 ca=0 - 1 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=967/1/0 df=3 of=0 ri=1 ql=0 qs=.... kt=0/W/1 ktl=58c b=10 ci=151 co=0 ca=0 - 2 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=1081/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/2 ktl=da94 b=10 ci=0 co=0 ca=0 - 3 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=1846/0/0 df=8 of=0 ri=1 ql=0 qs=.... kt=0/W/3 ktl=d1cd b=10 ci=0 co=0 ca=0 - 4 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=369/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/4 ktl=e0e7 b=10 ci=0 co=0 ca=0 - 5 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=381/1/0 df=4 of=0 ri=1 ql=0 qs=.... kt=0/W/5 ktl=fb2f b=10 ci=0 co=0 ca=0 - 6 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=1037/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/6 ktl=d2ad b=10 ci=0 co=0 ca=0 - 7 c=1474 g=1474 pq=1 pqc=1473 qp=0 dt=1572/0/0 df=8 of=0 ri=1 ql=0 qs=.... kt=0/W/7 ktl=cf15 b=10 ci=0 co=0 ca=0 + 0 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=545/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/0 ktl=ebc3 b=10 ci=0 co=0 ca=0 + 1 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=967/1/0 df=3 of=0 ri=1 ql=0 qs=.... kt=0/W/1 ktl=58c b=10 ci=151 co=0 ca=0 + 2 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=1081/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/2 ktl=da94 b=10 ci=0 co=0 ca=0 + 3 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=1846/0/0 df=8 of=0 ri=1 ql=0 qs=.... kt=0/W/3 ktl=d1cd b=10 ci=0 co=0 ca=0 + 4 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=369/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/4 ktl=e0e7 b=10 ci=0 co=0 ca=0 + 5 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=381/1/0 df=4 of=0 ri=1 ql=0 qs=.... kt=0/W/5 ktl=fb2f b=10 ci=0 co=0 ca=0 + 6 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=1037/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/6 ktl=d2ad b=10 ci=0 co=0 ca=0 + 7 c=1474 g=1474 pq=1 pgp=1473 qp=0 dt=1572/0/0 df=8 of=0 ri=1 ql=0 qs=.... kt=0/W/7 ktl=cf15 b=10 ci=0 co=0 ca=0 The first section lists the rcu_data structures for rcu_sched, the second for rcu_bh. Note that CONFIG_TREE_PREEMPT_RCU kernels will have an @@ -84,7 +84,7 @@ o "pq" indicates that this CPU has passed through a quiescent state CPU has not yet reported that fact, (2) some other CPU has not yet reported for this grace period, or (3) both. -o "pqc" indicates which grace period the last-observed quiescent +o "pgp" indicates which grace period the last-observed quiescent state for this CPU corresponds to. This is important for handling the race between CPU 0 reporting an extended dynticks-idle quiescent state for CPU 1 and CPU 1 suddenly waking up and @@ -184,10 +184,14 @@ o "kt" is the per-CPU kernel-thread state. The digit preceding The number after the final slash is the CPU that the kthread is actually running on. + This field is displayed only for CONFIG_RCU_BOOST kernels. + o "ktl" is the low-order 16 bits (in hexadecimal) of the count of the number of times that this CPU's per-CPU kthread has gone through its loop servicing invoke_rcu_cpu_kthread() requests. + This field is displayed only for CONFIG_RCU_BOOST kernels. + o "b" is the batch limit for this CPU. If more than this number of RCU callbacks is ready to invoke, then the remainder will be deferred. diff --git a/Documentation/SubmitChecklist b/Documentation/SubmitChecklist index da0382d..dc0e332 100644 --- a/Documentation/SubmitChecklist +++ b/Documentation/SubmitChecklist @@ -53,8 +53,8 @@ kernel patches. 12: Has been tested with CONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT, CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES, - CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_SPINLOCK_SLEEP all simultaneously - enabled. + CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_ATOMIC_SLEEP, CONFIG_PROVE_RCU + and CONFIG_DEBUG_OBJECTS_RCU_HEAD all simultaneously enabled. 13: Has been build- and runtime tested with and without CONFIG_SMP and CONFIG_PREEMPT. diff --git a/Documentation/SubmittingDrivers b/Documentation/SubmittingDrivers index 319baa8..36d16bb 100644 --- a/Documentation/SubmittingDrivers +++ b/Documentation/SubmittingDrivers @@ -130,7 +130,7 @@ Linux kernel master tree: ftp.??.kernel.org:/pub/linux/kernel/... ?? == your country code, such as "us", "uk", "fr", etc. - http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git + http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git Linux kernel mailing list: linux-kernel@vger.kernel.org diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches index 569f353..4468ce2 100644 --- a/Documentation/SubmittingPatches +++ b/Documentation/SubmittingPatches @@ -303,7 +303,7 @@ patches that are being emailed around. The sign-off is a simple line at the end of the explanation for the patch, which certifies that you wrote it or otherwise have the right to -pass it on as a open-source patch. The rules are pretty simple: if you +pass it on as an open-source patch. The rules are pretty simple: if you can certify the below: Developer's Certificate of Origin 1.1 diff --git a/Documentation/acpi/apei/einj.txt b/Documentation/acpi/apei/einj.txt index dfab718..5cc699b 100644 --- a/Documentation/acpi/apei/einj.txt +++ b/Documentation/acpi/apei/einj.txt @@ -48,12 +48,19 @@ directory apei/einj. The following files are provided. - param1 This file is used to set the first error parameter value. Effect of parameter depends on error_type specified. For memory error, this is - physical memory address. + physical memory address. Only available if param_extension module + parameter is specified. - param2 This file is used to set the second error parameter value. Effect of parameter depends on error_type specified. For memory error, this is - physical memory address mask. + physical memory address mask. Only available if param_extension + module parameter is specified. + +Injecting parameter support is a BIOS version specific extension, that +is, it only works on some BIOS version. If you want to use it, please +make sure your BIOS version has the proper support and specify +"param_extension=y" in module parameter. For more information about EINJ, please refer to ACPI specification version 4.0, section 17.5. diff --git a/Documentation/arm/Booting b/Documentation/arm/Booting index 4e686a2..a341d87 100644 --- a/Documentation/arm/Booting +++ b/Documentation/arm/Booting @@ -164,3 +164,8 @@ In either case, the following conditions must be met: - The boot loader is expected to call the kernel image by jumping directly to the first instruction of the kernel image. + On CPUs supporting the ARM instruction set, the entry must be + made in ARM state, even for a Thumb-2 kernel. + + On CPUs supporting only the Thumb instruction set such as + Cortex-M class CPUs, the entry must be made in Thumb state. diff --git a/Documentation/arm/SH-Mobile/zboot-rom-sdhi.txt b/Documentation/arm/SH-Mobile/zboot-rom-sdhi.txt new file mode 100644 index 0000000..4419598 --- /dev/null +++ b/Documentation/arm/SH-Mobile/zboot-rom-sdhi.txt @@ -0,0 +1,42 @@ +ROM-able zImage boot from eSD +----------------------------- + +An ROM-able zImage compiled with ZBOOT_ROM_SDHI may be written to eSD and +SuperH Mobile ARM will to boot directly from the SDHI hardware block. + +This is achieved by the mask ROM loading the first portion of the image into +MERAM and then jumping to it. This portion contains loader code which +copies the entire image to SDRAM and jumps to it. From there the zImage +boot code proceeds as normal, uncompressing the image into its final +location and then jumping to it. + +This code has been tested on an mackerel board using the developer 1A eSD +boot mode which is configured using the following jumper settings. + + 8 7 6 5 4 3 2 1 + x|x|x|x| |x|x| +S4 -+-+-+-+-+-+-+- + | | | |x| | |x on + +The eSD card needs to be present in SDHI slot 1 (CN7). +As such S1 and S33 also need to be configured as per +the notes in arch/arm/mach-shmobile/board-mackerel.c. + +A partial zImage must be written to physical partition #1 (boot) +of the eSD at sector 0 in vrl4 format. A utility vrl4 is supplied to +accomplish this. + +e.g. + vrl4 < zImage | dd of=/dev/sdX bs=512 count=17 + +A full copy of _the same_ zImage should be written to physical partition #1 +(boot) of the eSD at sector 0. This should _not_ be in vrl4 format. + + vrl4 < zImage | dd of=/dev/sdX bs=512 + +Note: The commands above assume that the physical partition has been +switched. No such facility currently exists in the Linux Kernel. + +Physical partitions are described in the eSD specification. At the time of +writing they are not the same as partitions that are typically configured +using fdisk and visible through /proc/partitions diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt index c12bfc1..359587b 100644 --- a/Documentation/arm/Samsung-S3C24XX/Overview.txt +++ b/Documentation/arm/Samsung-S3C24XX/Overview.txt @@ -8,10 +8,13 @@ Introduction The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported by the 's3c2410' architecture of ARM Linux. Currently the S3C2410, - S3C2412, S3C2413, S3C2416 S3C2440, S3C2442, S3C2443 and S3C2450 devices + S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443 and S3C2450 devices are supported. - Support for the S3C2400 and S3C24A0 series are in progress. + Support for the S3C2400 and S3C24A0 series was never completed and the + corresponding code has been removed after a while. If someone wishes to + revive this effort, partial support can be retrieved from earlier Linux + versions. The S3C2416 and S3C2450 devices are very similar and S3C2450 support is included under the arch/arm/mach-s3c2416 directory. Note, whilst core diff --git a/Documentation/arm/kernel_user_helpers.txt b/Documentation/arm/kernel_user_helpers.txt new file mode 100644 index 0000000..a17df9f --- /dev/null +++ b/Documentation/arm/kernel_user_helpers.txt @@ -0,0 +1,267 @@ +Kernel-provided User Helpers +============================ + +These are segment of kernel provided user code reachable from user space +at a fixed address in kernel memory. This is used to provide user space +with some operations which require kernel help because of unimplemented +native feature and/or instructions in many ARM CPUs. The idea is for this +code to be executed directly in user mode for best efficiency but which is +too intimate with the kernel counter part to be left to user libraries. +In fact this code might even differ from one CPU to another depending on +the available instruction set, or whether it is a SMP systems. In other +words, the kernel reserves the right to change this code as needed without +warning. Only the entry points and their results as documented here are +guaranteed to be stable. + +This is different from (but doesn't preclude) a full blown VDSO +implementation, however a VDSO would prevent some assembly tricks with +constants that allows for efficient branching to those code segments. And +since those code segments only use a few cycles before returning to user +code, the overhead of a VDSO indirect far call would add a measurable +overhead to such minimalistic operations. + +User space is expected to bypass those helpers and implement those things +inline (either in the code emitted directly by the compiler, or part of +the implementation of a library call) when optimizing for a recent enough +processor that has the necessary native support, but only if resulting +binaries are already to be incompatible with earlier ARM processors due to +useage of similar native instructions for other things. In other words +don't make binaries unable to run on earlier processors just for the sake +of not using these kernel helpers if your compiled code is not going to +use new instructions for other purpose. + +New helpers may be added over time, so an older kernel may be missing some +helpers present in a newer kernel. For this reason, programs must check +the value of __kuser_helper_version (see below) before assuming that it is +safe to call any particular helper. This check should ideally be +performed only once at process startup time, and execution aborted early +if the required helpers are not provided by the kernel version that +process is running on. + +kuser_helper_version +-------------------- + +Location: 0xffff0ffc + +Reference declaration: + + extern int32_t __kuser_helper_version; + +Definition: + + This field contains the number of helpers being implemented by the + running kernel. User space may read this to determine the availability + of a particular helper. + +Usage example: + +#define __kuser_helper_version (*(int32_t *)0xffff0ffc) + +void check_kuser_version(void) +{ + if (__kuser_helper_version < 2) { + fprintf(stderr, "can't do atomic operations, kernel too old\n"); + abort(); + } +} + +Notes: + + User space may assume that the value of this field never changes + during the lifetime of any single process. This means that this + field can be read once during the initialisation of a library or + startup phase of a program. + +kuser_get_tls +------------- + +Location: 0xffff0fe0 + +Reference prototype: + + void * __kuser_get_tls(void); + +Input: + + lr = return address + +Output: + + r0 = TLS value + +Clobbered registers: + + none + +Definition: + + Get the TLS value as previously set via the __ARM_NR_set_tls syscall. + +Usage example: + +typedef void * (__kuser_get_tls_t)(void); +#define __kuser_get_tls (*(__kuser_get_tls_t *)0xffff0fe0) + +void foo() +{ + void *tls = __kuser_get_tls(); + printf("TLS = %p\n", tls); +} + +Notes: + + - Valid only if __kuser_helper_version >= 1 (from kernel version 2.6.12). + +kuser_cmpxchg +------------- + +Location: 0xffff0fc0 + +Reference prototype: + + int __kuser_cmpxchg(int32_t oldval, int32_t newval, volatile int32_t *ptr); + +Input: + + r0 = oldval + r1 = newval + r2 = ptr + lr = return address + +Output: + + r0 = success code (zero or non-zero) + C flag = set if r0 == 0, clear if r0 != 0 + +Clobbered registers: + + r3, ip, flags + +Definition: + + Atomically store newval in *ptr only if *ptr is equal to oldval. + Return zero if *ptr was changed or non-zero if no exchange happened. + The C flag is also set if *ptr was changed to allow for assembly + optimization in the calling code. + +Usage example: + +typedef int (__kuser_cmpxchg_t)(int oldval, int newval, volatile int *ptr); +#define __kuser_cmpxchg (*(__kuser_cmpxchg_t *)0xffff0fc0) + +int atomic_add(volatile int *ptr, int val) +{ + int old, new; + + do { + old = *ptr; + new = old + val; + } while(__kuser_cmpxchg(old, new, ptr)); + + return new; +} + +Notes: + + - This routine already includes memory barriers as needed. + + - Valid only if __kuser_helper_version >= 2 (from kernel version 2.6.12). + +kuser_memory_barrier +-------------------- + +Location: 0xffff0fa0 + +Reference prototype: + + void __kuser_memory_barrier(void); + +Input: + + lr = return address + +Output: + + none + +Clobbered registers: + + none + +Definition: + + Apply any needed memory barrier to preserve consistency with data modified + manually and __kuser_cmpxchg usage. + +Usage example: + +typedef void (__kuser_dmb_t)(void); +#define __kuser_dmb (*(__kuser_dmb_t *)0xffff0fa0) + +Notes: + + - Valid only if __kuser_helper_version >= 3 (from kernel version 2.6.15). + +kuser_cmpxchg64 +--------------- + +Location: 0xffff0f60 + +Reference prototype: + + int __kuser_cmpxchg64(const int64_t *oldval, + const int64_t *newval, + volatile int64_t *ptr); + +Input: + + r0 = pointer to oldval + r1 = pointer to newval + r2 = pointer to target value + lr = return address + +Output: + + r0 = success code (zero or non-zero) + C flag = set if r0 == 0, clear if r0 != 0 + +Clobbered registers: + + r3, lr, flags + +Definition: + + Atomically store the 64-bit value pointed by *newval in *ptr only if *ptr + is equal to the 64-bit value pointed by *oldval. Return zero if *ptr was + changed or non-zero if no exchange happened. + + The C flag is also set if *ptr was changed to allow for assembly + optimization in the calling code. + +Usage example: + +typedef int (__kuser_cmpxchg64_t)(const int64_t *oldval, + const int64_t *newval, + volatile int64_t *ptr); +#define __kuser_cmpxchg64 (*(__kuser_cmpxchg64_t *)0xffff0f60) + +int64_t atomic_add64(volatile int64_t *ptr, int64_t val) +{ + int64_t old, new; + + do { + old = *ptr; + new = old + val; + } while(__kuser_cmpxchg64(&old, &new, ptr)); + + return new; +} + +Notes: + + - This routine already includes memory barriers as needed. + + - Due to the length of this sequence, this spans 2 conventional kuser + "slots", therefore 0xffff0f80 is not used as a valid entry point. + + - Valid only if __kuser_helper_version >= 5 (from kernel version 3.1). diff --git a/Documentation/blackfin/bfin-gpio-notes.txt b/Documentation/blackfin/bfin-gpio-notes.txt index f731c1e..d36b01f 100644 --- a/Documentation/blackfin/bfin-gpio-notes.txt +++ b/Documentation/blackfin/bfin-gpio-notes.txt @@ -1,5 +1,5 @@ /* - * File: Documentation/blackfin/bfin-gpio-note.txt + * File: Documentation/blackfin/bfin-gpio-notes.txt * Based on: * Author: * diff --git a/Documentation/blackfin/bfin-spi-notes.txt b/Documentation/blackfin/bfin-spi-notes.txt index 556fa87..eae6eaf 100644 --- a/Documentation/blackfin/bfin-spi-notes.txt +++ b/Documentation/blackfin/bfin-spi-notes.txt @@ -9,6 +9,8 @@ the entire SPI transfer. - And not just bits_per_word duration. In most cases you can utilize SPI MODE_3 instead of MODE_0 to work-around this behavior. If your SPI slave device in question requires SPI MODE_0 or MODE_2 timing, you can utilize the GPIO controlled SPI Slave Select option instead. +In this case, you should use GPIO based CS for all of your slaves and not just +the ones using mode 0 or 2 in order to guarantee correct CS toggling behavior. You can even use the same pin whose peripheral role is a SSEL, but use it as a GPIO instead. diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt index c6d84cf..e418dc0 100644 --- a/Documentation/block/biodoc.txt +++ b/Documentation/block/biodoc.txt @@ -186,7 +186,7 @@ a virtual address mapping (unlike the earlier scheme of virtual address do not have a corresponding kernel virtual address space mapping) and low-memory pages. -Note: Please refer to Documentation/PCI/PCI-DMA-mapping.txt for a discussion +Note: Please refer to Documentation/DMA-API-HOWTO.txt for a discussion on PCI high mem DMA aspects and mapping of scatter gather lists, and support for 64 bit PCI. diff --git a/Documentation/block/cfq-iosched.txt b/Documentation/block/cfq-iosched.txt index e578fee..6d670f5 100644 --- a/Documentation/block/cfq-iosched.txt +++ b/Documentation/block/cfq-iosched.txt @@ -43,3 +43,74 @@ If one sets slice_idle=0 and if storage supports NCQ, CFQ internally switches to IOPS mode and starts providing fairness in terms of number of requests dispatched. Note that this mode switching takes effect only for group scheduling. For non-cgroup users nothing should change. + +CFQ IO scheduler Idling Theory +=============================== +Idling on a queue is primarily about waiting for the next request to come +on same queue after completion of a request. In this process CFQ will not +dispatch requests from other cfq queues even if requests are pending there. + +The rationale behind idling is that it can cut down on number of seeks +on rotational media. For example, if a process is doing dependent +sequential reads (next read will come on only after completion of previous +one), then not dispatching request from other queue should help as we +did not move the disk head and kept on dispatching sequential IO from +one queue. + +CFQ has following service trees and various queues are put on these trees. + + sync-idle sync-noidle async + +All cfq queues doing synchronous sequential IO go on to sync-idle tree. +On this tree we idle on each queue individually. + +All synchronous non-sequential queues go on sync-noidle tree. Also any +request which are marked with REQ_NOIDLE go on this service tree. On this +tree we do not idle on individual queues instead idle on the whole group +of queues or the tree. So if there are 4 queues waiting for IO to dispatch +we will idle only once last queue has dispatched the IO and there is +no more IO on this service tree. + +All async writes go on async service tree. There is no idling on async +queues. + +CFQ has some optimizations for SSDs and if it detects a non-rotational +media which can support higher queue depth (multiple requests at in +flight at a time), then it cuts down on idling of individual queues and +all the queues move to sync-noidle tree and only tree idle remains. This +tree idling provides isolation with buffered write queues on async tree. + +FAQ +=== +Q1. Why to idle at all on queues marked with REQ_NOIDLE. + +A1. We only do tree idle (all queues on sync-noidle tree) on queues marked + with REQ_NOIDLE. This helps in providing isolation with all the sync-idle + queues. Otherwise in presence of many sequential readers, other + synchronous IO might not get fair share of disk. + + For example, if there are 10 sequential readers doing IO and they get + 100ms each. If a REQ_NOIDLE request comes in, it will be scheduled + roughly after 1 second. If after completion of REQ_NOIDLE request we + do not idle, and after a couple of milli seconds a another REQ_NOIDLE + request comes in, again it will be scheduled after 1second. Repeat it + and notice how a workload can lose its disk share and suffer due to + multiple sequential readers. + + fsync can generate dependent IO where bunch of data is written in the + context of fsync, and later some journaling data is written. Journaling + data comes in only after fsync has finished its IO (atleast for ext4 + that seemed to be the case). Now if one decides not to idle on fsync + thread due to REQ_NOIDLE, then next journaling write will not get + scheduled for another second. A process doing small fsync, will suffer + badly in presence of multiple sequential readers. + + Hence doing tree idling on threads using REQ_NOIDLE flag on requests + provides isolation from multiple sequential readers and at the same + time we do not idle on individual threads. + +Q2. When to specify REQ_NOIDLE +A2. I would think whenever one is doing synchronous write and not expecting + more writes to be dispatched from same context soon, should be able + to specify REQ_NOIDLE on writes and that probably should work well for + most of the cases. diff --git a/Documentation/block/queue-sysfs.txt b/Documentation/block/queue-sysfs.txt index f652740..d8147b3 100644 --- a/Documentation/block/queue-sysfs.txt +++ b/Documentation/block/queue-sysfs.txt @@ -45,9 +45,13 @@ device. rq_affinity (RW) ---------------- -If this option is enabled, the block layer will migrate request completions -to the CPU that originally submitted the request. For some workloads -this provides a significant reduction in CPU cycles due to caching effects. +If this option is '1', the block layer will migrate request completions to the +cpu "group" that originally submitted the request. For some workloads this +provides a significant reduction in CPU cycles due to caching effects. + +For storage configurations that need to maximize distribution of completion +processing setting this option to '2' forces the completion to run on the +requesting cpu (bypassing the "group" aggregation logic). scheduler (RW) -------------- diff --git a/Documentation/block/switching-sched.txt b/Documentation/block/switching-sched.txt index 71cfbdc..3b2612e 100644 --- a/Documentation/block/switching-sched.txt +++ b/Documentation/block/switching-sched.txt @@ -1,6 +1,6 @@ To choose IO schedulers at boot time, use the argument 'elevator=deadline'. -'noop', 'as' and 'cfq' (the default) are also available. IO schedulers are -assigned globally at boot time only presently. +'noop' and 'cfq' (the default) are also available. IO schedulers are assigned +globally at boot time only presently. Each io queue has a set of io scheduler tunables associated with it. These tunables control how the io scheduler works. You can find these entries diff --git a/Documentation/blockdev/README.DAC960 b/Documentation/blockdev/README.DAC960 index 0e8f618..bd85fb9 100644 --- a/Documentation/blockdev/README.DAC960 +++ b/Documentation/blockdev/README.DAC960 @@ -214,7 +214,7 @@ replacing "/usr/src" with wherever you keep your Linux kernel source tree: make config make bzImage (or zImage) -Then install "arch/i386/boot/bzImage" or "arch/i386/boot/zImage" as your +Then install "arch/x86/boot/bzImage" or "arch/x86/boot/zImage" as your standard kernel, run lilo if appropriate, and reboot. To create the necessary devices in /dev, the "make_rd" script included in diff --git a/Documentation/blockdev/cciss.txt b/Documentation/blockdev/cciss.txt index c00c6a5..b79d0a1 100644 --- a/Documentation/blockdev/cciss.txt +++ b/Documentation/blockdev/cciss.txt @@ -78,6 +78,16 @@ The device naming scheme is: /dev/cciss/c1d1p2 Controller 1, disk 1, partition 2 /dev/cciss/c1d1p3 Controller 1, disk 1, partition 3 +CCISS simple mode support +------------------------- + +The "cciss_simple_mode=1" boot parameter may be used to prevent the driver +from putting the controller into "performant" mode. The difference is that +with simple mode, each command completion requires an interrupt, while with +"performant mode" (the default, and ordinarily better performing) it is +possible to have multiple command completions indicated by a single +interrupt. + SCSI tape drive and medium changer support ------------------------------------------ @@ -88,14 +98,12 @@ You must enable "SCSI tape drive support for Smart Array 5xxx" and "SCSI support" in your kernel configuration to be able to use SCSI tape drives with your Smart Array 5xxx controller. -Additionally, note that the driver will not engage the SCSI core at init -time. The driver must be directed to dynamically engage the SCSI core via -the /proc filesystem entry which the "block" side of the driver creates as -/proc/driver/cciss/cciss* at runtime. This is because at driver init time, -the SCSI core may not yet be initialized (because the driver is a block -driver) and attempting to register it with the SCSI core in such a case -would cause a hang. This is best done via an initialization script -(typically in /etc/init.d, but could vary depending on distribution). +Additionally, note that the driver will engage the SCSI core at init +time if any tape drives or medium changers are detected. The driver may +also be directed to dynamically engage the SCSI core via the /proc filesystem +entry which the "block" side of the driver creates as +/proc/driver/cciss/cciss* at runtime. This is best done via a script. + For example: for x in /proc/driver/cciss/cciss[0-9]* diff --git a/Documentation/blockdev/ramdisk.txt b/Documentation/blockdev/ramdisk.txt index 6c820ba..fa72e97 100644 --- a/Documentation/blockdev/ramdisk.txt +++ b/Documentation/blockdev/ramdisk.txt @@ -64,9 +64,9 @@ the RAM disk dynamically grows as data is being written into it, a size field is not required. Bits 11 to 13 are not currently used and may as well be zero. These numbers are no magical secrets, as seen below: -./arch/i386/kernel/setup.c:#define RAMDISK_IMAGE_START_MASK 0x07FF -./arch/i386/kernel/setup.c:#define RAMDISK_PROMPT_FLAG 0x8000 -./arch/i386/kernel/setup.c:#define RAMDISK_LOAD_FLAG 0x4000 +./arch/x86/kernel/setup.c:#define RAMDISK_IMAGE_START_MASK 0x07FF +./arch/x86/kernel/setup.c:#define RAMDISK_PROMPT_FLAG 0x8000 +./arch/x86/kernel/setup.c:#define RAMDISK_LOAD_FLAG 0x4000 Consider a typical two floppy disk setup, where you will have the kernel on disk one, and have already put a RAM disk image onto disk #2. @@ -85,7 +85,7 @@ The command line equivalent is: "prompt_ramdisk=1" Putting that together gives 2^15 + 2^14 + 0 = 49152 for an rdev word. So to create disk one of the set, you would do: - /usr/src/linux# cat arch/i386/boot/zImage > /dev/fd0 + /usr/src/linux# cat arch/x86/boot/zImage > /dev/fd0 /usr/src/linux# rdev /dev/fd0 /dev/fd0 /usr/src/linux# rdev -r /dev/fd0 49152 diff --git a/Documentation/bus-virt-phys-mapping.txt b/Documentation/bus-virt-phys-mapping.txt index 1b5aa10..2bc55ff 100644 --- a/Documentation/bus-virt-phys-mapping.txt +++ b/Documentation/bus-virt-phys-mapping.txt @@ -1,6 +1,6 @@ [ NOTE: The virt_to_bus() and bus_to_virt() functions have been superseded by the functionality provided by the PCI DMA interface - (see Documentation/PCI/PCI-DMA-mapping.txt). They continue + (see Documentation/DMA-API-HOWTO.txt). They continue to be documented below for historical purposes, but new code must not use them. --davidm 00/12/12 ] diff --git a/Documentation/cdrom/packet-writing.txt b/Documentation/cdrom/packet-writing.txt index 13c251d..2834170 100644 --- a/Documentation/cdrom/packet-writing.txt +++ b/Documentation/cdrom/packet-writing.txt @@ -109,7 +109,7 @@ this interface. (see http://tom.ist-im-web.de/download/pktcdvd ) For a description of the sysfs interface look into the file: - Documentation/ABI/testing/sysfs-block-pktcdvd + Documentation/ABI/testing/sysfs-class-pktcdvd Using the pktcdvd debugfs interface diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt index 60d82e1..d3d5f3f 100644 --- a/Documentation/cgroups/cgroups.txt +++ b/Documentation/cgroups/cgroups.txt @@ -454,8 +454,8 @@ mounted hierarchy, to remove a task from its current cgroup you must move it into a new cgroup (possibly the root cgroup) by writing to the new cgroup's tasks file. -Note: If the ns cgroup is active, moving a process to another cgroup can -fail. +Note: Due to some restrictions enforced by some cgroup subsystems, moving +a process to another cgroup can fail. 2.3 Mounting hierarchies by name -------------------------------- diff --git a/Documentation/cgroups/cpuacct.txt b/Documentation/cgroups/cpuacct.txt index 3419707..e21a932 100644 --- a/Documentation/cgroups/cpuacct.txt +++ b/Documentation/cgroups/cpuacct.txt @@ -23,7 +23,7 @@ New accounting groups can be created under the parent group /sys/fs/cgroup. # cd /sys/fs/cgroup # mkdir g1 -# echo $$ > g1 +# echo $$ > g1/tasks The above steps create a new group g1 and move the current shell process (bash) into it. CPU time consumed by this bash and its children diff --git a/Documentation/cgroups/cpusets.txt b/Documentation/cgroups/cpusets.txt index 5b0d78e..5c51ed4 100644 --- a/Documentation/cgroups/cpusets.txt +++ b/Documentation/cgroups/cpusets.txt @@ -180,7 +180,7 @@ files describing that cpuset: - cpuset.sched_load_balance flag: if set, load balance within CPUs on that cpuset - cpuset.sched_relax_domain_level: the searching range when migrating tasks -In addition, the root cpuset only has the following file: +In addition, only the root cpuset has the following file: - cpuset.memory_pressure_enabled flag: compute memory_pressure? New cpusets are created using the mkdir system call or shell diff --git a/Documentation/cgroups/freezer-subsystem.txt b/Documentation/cgroups/freezer-subsystem.txt index c21d777..7e62de1 100644 --- a/Documentation/cgroups/freezer-subsystem.txt +++ b/Documentation/cgroups/freezer-subsystem.txt @@ -33,9 +33,9 @@ demonstrate this problem using nested bash shells: From a second, unrelated bash shell: $ kill -SIGSTOP 16690 - $ kill -SIGCONT 16990 + $ kill -SIGCONT 16690 - <at this point 16990 exits and causes 16644 to exit too> + <at this point 16690 exits and causes 16644 to exit too> This happens because bash can observe both signals and choose how it responds to them. diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index 06eb6d9..fd129f6 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt @@ -418,7 +418,6 @@ total_unevictable - sum of all children's "unevictable" # The following additional stats are dependent on CONFIG_DEBUG_VM. -inactive_ratio - VM internal parameter. (see mm/page_alloc.c) recent_rotated_anon - VM internal parameter. (see mm/vmscan.c) recent_rotated_file - VM internal parameter. (see mm/vmscan.c) recent_scanned_anon - VM internal parameter. (see mm/vmscan.c) @@ -441,6 +440,10 @@ Note: 5.3 swappiness Similar to /proc/sys/vm/swappiness, but affecting a hierarchy of groups only. +Please note that unlike the global swappiness, memcg knob set to 0 +really prevents from any swapping even if there is a swap storage +available. This might lead to memcg OOM killer if there are no file +pages to reclaim. Following cgroups' swappiness can't be changed. - root cgroup (uses /proc/sys/vm/swappiness). diff --git a/Documentation/cpu-freq/cpu-drivers.txt b/Documentation/cpu-freq/cpu-drivers.txt index 6c30e93..c436096 100644 --- a/Documentation/cpu-freq/cpu-drivers.txt +++ b/Documentation/cpu-freq/cpu-drivers.txt @@ -168,7 +168,7 @@ in-chipset dynamic frequency switching to policy->min, the upper limit to policy->max, and -if supported- select a performance-oriented setting when policy->policy is CPUFREQ_POLICY_PERFORMANCE, and a powersaving-oriented setting when CPUFREQ_POLICY_POWERSAVE. Also check -the reference implementation in arch/i386/kernel/cpu/cpufreq/longrun.c +the reference implementation in drivers/cpufreq/longrun.c diff --git a/Documentation/cpu-freq/governors.txt b/Documentation/cpu-freq/governors.txt index 963a543..981a159 100644 --- a/Documentation/cpu-freq/governors.txt +++ b/Documentation/cpu-freq/governors.txt @@ -133,7 +133,7 @@ The sampling rate is limited by the HW transition latency: transition_latency * 100 Or by kernel restrictions: If CONFIG_NO_HZ is set, the limit is 10ms fixed. -If CONFIG_NO_HZ is not set or no_hz=off boot parameter is used, the +If CONFIG_NO_HZ is not set or nohz=off boot parameter is used, the limits depend on the CONFIG_HZ option: HZ=1000: min=20000us (20ms) HZ=250: min=80000us (80ms) diff --git a/Documentation/development-process/4.Coding b/Documentation/development-process/4.Coding index f3f1a46..e3cb6a5 100644 --- a/Documentation/development-process/4.Coding +++ b/Documentation/development-process/4.Coding @@ -244,7 +244,7 @@ testing purposes. In particular, you should turn on: - DEBUG_SLAB can find a variety of memory allocation and use errors; it should be used on most development kernels. - - DEBUG_SPINLOCK, DEBUG_SPINLOCK_SLEEP, and DEBUG_MUTEXES will find a + - DEBUG_SPINLOCK, DEBUG_ATOMIC_SLEEP, and DEBUG_MUTEXES will find a number of common locking errors. There are quite a few other debugging options, some of which will be @@ -278,7 +278,7 @@ enabled, a configurable percentage of memory allocations will be made to fail; these failures can be restricted to a specific range of code. Running with fault injection enabled allows the programmer to see how the code responds when things go badly. See -Documentation/fault-injection/fault-injection.text for more information on +Documentation/fault-injection/fault-injection.txt for more information on how to use this facility. Other kinds of errors can be found with the "sparse" static analysis tool. diff --git a/Documentation/device-mapper/dm-flakey.txt b/Documentation/device-mapper/dm-flakey.txt index c8efdfd..6ff5c23 100644 --- a/Documentation/device-mapper/dm-flakey.txt +++ b/Documentation/device-mapper/dm-flakey.txt @@ -1,17 +1,53 @@ dm-flakey ========= -This target is the same as the linear target except that it returns I/O -errors periodically. It's been found useful in simulating failing -devices for testing purposes. +This target is the same as the linear target except that it exhibits +unreliable behaviour periodically. It's been found useful in simulating +failing devices for testing purposes. Starting from the time the table is loaded, the device is available for -<up interval> seconds, then returns errors for <down interval> seconds, -and then this cycle repeats. +<up interval> seconds, then exhibits unreliable behaviour for <down +interval> seconds, and then this cycle repeats. -Parameters: <dev path> <offset> <up interval> <down interval> +Also, consider using this in combination with the dm-delay target too, +which can delay reads and writes and/or send them to different +underlying devices. + +Table parameters +---------------- + <dev path> <offset> <up interval> <down interval> \ + [<num_features> [<feature arguments>]] + +Mandatory parameters: <dev path>: Full pathname to the underlying block-device, or a "major:minor" device-number. <offset>: Starting sector within the device. <up interval>: Number of seconds device is available. <down interval>: Number of seconds device returns errors. + +Optional feature parameters: + If no feature parameters are present, during the periods of + unreliability, all I/O returns errors. + + drop_writes: + All write I/O is silently ignored. + Read I/O is handled correctly. + + corrupt_bio_byte <Nth_byte> <direction> <value> <flags>: + During <down interval>, replace <Nth_byte> of the data of + each matching bio with <value>. + + <Nth_byte>: The offset of the byte to replace. + Counting starts at 1, to replace the first byte. + <direction>: Either 'r' to corrupt reads or 'w' to corrupt writes. + 'w' is incompatible with drop_writes. + <value>: The value (from 0-255) to write. + <flags>: Perform the replacement only if bio->bi_rw has all the + selected flags set. + +Examples: + corrupt_bio_byte 32 r 1 0 + - replaces the 32nd byte of READ bios with the value 1 + + corrupt_bio_byte 224 w 0 32 + - replaces the 224th byte of REQ_META (=32) bios with the value 0 diff --git a/Documentation/device-mapper/dm-log.txt b/Documentation/device-mapper/dm-log.txt index 994dd75..c155ac5 100644 --- a/Documentation/device-mapper/dm-log.txt +++ b/Documentation/device-mapper/dm-log.txt @@ -48,7 +48,7 @@ kernel and userspace, 'connector' is used as the interface for communication. There are currently two userspace log implementations that leverage this -framework - "clustered_disk" and "clustered_core". These implementations +framework - "clustered-disk" and "clustered-core". These implementations provide a cluster-coherent log for shared-storage. Device-mapper mirroring can be used in a shared-storage environment when the cluster log implementations are employed. diff --git a/Documentation/device-mapper/dm-raid.txt b/Documentation/device-mapper/dm-raid.txt index 33b6b70..2a8c113 100644 --- a/Documentation/device-mapper/dm-raid.txt +++ b/Documentation/device-mapper/dm-raid.txt @@ -1,70 +1,108 @@ -Device-mapper RAID (dm-raid) is a bridge from DM to MD. It -provides a way to use device-mapper interfaces to access the MD RAID -drivers. +dm-raid +------- -As with all device-mapper targets, the nominal public interfaces are the -constructor (CTR) tables and the status outputs (both STATUSTYPE_INFO -and STATUSTYPE_TABLE). The CTR table looks like the following: +The device-mapper RAID (dm-raid) target provides a bridge from DM to MD. +It allows the MD RAID drivers to be accessed using a device-mapper +interface. -1: <s> <l> raid \ -2: <raid_type> <#raid_params> <raid_params> \ -3: <#raid_devs> <meta_dev1> <dev1> .. <meta_devN> <devN> - -Line 1 contains the standard first three arguments to any device-mapper -target - the start, length, and target type fields. The target type in -this case is "raid". - -Line 2 contains the arguments that define the particular raid -type/personality/level, the required arguments for that raid type, and -any optional arguments. Possible raid types include: raid4, raid5_la, -raid5_ls, raid5_rs, raid6_zr, raid6_nr, and raid6_nc. (raid1 is -planned for the future.) The list of required and optional parameters -is the same for all the current raid types. The required parameters are -positional, while the optional parameters are given as key/value pairs. -The possible parameters are as follows: - <chunk_size> Chunk size in sectors. - [[no]sync] Force/Prevent RAID initialization - [rebuild <idx>] Rebuild the drive indicated by the index - [daemon_sleep <ms>] Time between bitmap daemon work to clear bits - [min_recovery_rate <kB/sec/disk>] Throttle RAID initialization - [max_recovery_rate <kB/sec/disk>] Throttle RAID initialization - [max_write_behind <sectors>] See '-write-behind=' (man mdadm) - [stripe_cache <sectors>] Stripe cache size for higher RAIDs - -Line 3 contains the list of devices that compose the array in -metadata/data device pairs. If the metadata is stored separately, a '-' -is given for the metadata device position. If a drive has failed or is -missing at creation time, a '-' can be given for both the metadata and -data drives for a given position. - -NB. Currently all metadata devices must be specified as '-'. - -Examples: -# RAID4 - 4 data drives, 1 parity +The target is named "raid" and it accepts the following parameters: + + <raid_type> <#raid_params> <raid_params> \ + <#raid_devs> <metadata_dev0> <dev0> [.. <metadata_devN> <devN>] + +<raid_type>: + raid1 RAID1 mirroring + raid4 RAID4 dedicated parity disk + raid5_la RAID5 left asymmetric + - rotating parity 0 with data continuation + raid5_ra RAID5 right asymmetric + - rotating parity N with data continuation + raid5_ls RAID5 left symmetric + - rotating parity 0 with data restart + raid5_rs RAID5 right symmetric + - rotating parity N with data restart + raid6_zr RAID6 zero restart + - rotating parity zero (left-to-right) with data restart + raid6_nr RAID6 N restart + - rotating parity N (right-to-left) with data restart + raid6_nc RAID6 N continue + - rotating parity N (right-to-left) with data continuation + + Refererence: Chapter 4 of + http://www.snia.org/sites/default/files/SNIA_DDF_Technical_Position_v2.0.pdf + +<#raid_params>: The number of parameters that follow. + +<raid_params> consists of + Mandatory parameters: + <chunk_size>: Chunk size in sectors. This parameter is often known as + "stripe size". It is the only mandatory parameter and + is placed first. + + followed by optional parameters (in any order): + [sync|nosync] Force or prevent RAID initialization. + + [rebuild <idx>] Rebuild drive number idx (first drive is 0). + + [daemon_sleep <ms>] + Interval between runs of the bitmap daemon that + clear bits. A longer interval means less bitmap I/O but + resyncing after a failure is likely to take longer. + + [min_recovery_rate <kB/sec/disk>] Throttle RAID initialization + [max_recovery_rate <kB/sec/disk>] Throttle RAID initialization + [write_mostly <idx>] Drive index is write-mostly + [max_write_behind <sectors>] See '-write-behind=' (man mdadm) + [stripe_cache <sectors>] Stripe cache size (higher RAIDs only) + [region_size <sectors>] + The region_size multiplied by the number of regions is the + logical size of the array. The bitmap records the device + synchronisation state for each region. + +<#raid_devs>: The number of devices composing the array. + Each device consists of two entries. The first is the device + containing the metadata (if any); the second is the one containing the + data. + + If a drive has failed or is missing at creation time, a '-' can be + given for both the metadata and data drives for a given position. + + +Example tables +-------------- +# RAID4 - 4 data drives, 1 parity (no metadata devices) # No metadata devices specified to hold superblock/bitmap info # Chunk size of 1MiB # (Lines separated for easy reading) + 0 1960893648 raid \ raid4 1 2048 \ 5 - 8:17 - 8:33 - 8:49 - 8:65 - 8:81 -# RAID4 - 4 data drives, 1 parity (no metadata devices) +# RAID4 - 4 data drives, 1 parity (with metadata devices) # Chunk size of 1MiB, force RAID initialization, # min recovery rate at 20 kiB/sec/disk + 0 1960893648 raid \ - raid4 4 2048 min_recovery_rate 20 sync\ - 5 - 8:17 - 8:33 - 8:49 - 8:65 - 8:81 + raid4 4 2048 sync min_recovery_rate 20 \ + 5 8:17 8:18 8:33 8:34 8:49 8:50 8:65 8:66 8:81 8:82 -Performing a 'dmsetup table' should display the CTR table used to -construct the mapping (with possible reordering of optional -parameters). +'dmsetup table' displays the table used to construct the mapping. +The optional parameters are always printed in the order listed +above with "sync" or "nosync" always output ahead of the other +arguments, regardless of the order used when originally loading the table. +Arguments that can be repeated are ordered by value. -Performing a 'dmsetup status' will yield information on the state and -health of the array. The output is as follows: +'dmsetup status' yields information on the state and health of the +array. +The output is as follows: 1: <s> <l> raid \ 2: <raid_type> <#devices> <1 health char for each dev> <resync_ratio> -Line 1 is standard DM output. Line 2 is best shown by example: +Line 1 is the standard output produced by device-mapper. +Line 2 is produced by the raid target, and best explained by example: 0 1960893648 raid raid4 5 AAAAA 2/490221568 Here we can see the RAID type is raid4, there are 5 devices - all of which are 'A'live, and the array is 2/490221568 complete with recovery. +Faulty or missing devices are marked 'D'. Devices that are out-of-sync +are marked 'a'. diff --git a/Documentation/device-mapper/persistent-data.txt b/Documentation/device-mapper/persistent-data.txt new file mode 100644 index 0000000..0e5df9b --- /dev/null +++ b/Documentation/device-mapper/persistent-data.txt @@ -0,0 +1,84 @@ +Introduction +============ + +The more-sophisticated device-mapper targets require complex metadata +that is managed in kernel. In late 2010 we were seeing that various +different targets were rolling their own data strutures, for example: + +- Mikulas Patocka's multisnap implementation +- Heinz Mauelshagen's thin provisioning target +- Another btree-based caching target posted to dm-devel +- Another multi-snapshot target based on a design of Daniel Phillips + +Maintaining these data structures takes a lot of work, so if possible +we'd like to reduce the number. + +The persistent-data library is an attempt to provide a re-usable +framework for people who want to store metadata in device-mapper +targets. It's currently used by the thin-provisioning target and an +upcoming hierarchical storage target. + +Overview +======== + +The main documentation is in the header files which can all be found +under drivers/md/persistent-data. + +The block manager +----------------- + +dm-block-manager.[hc] + +This provides access to the data on disk in fixed sized-blocks. There +is a read/write locking interface to prevent concurrent accesses, and +keep data that is being used in the cache. + +Clients of persistent-data are unlikely to use this directly. + +The transaction manager +----------------------- + +dm-transaction-manager.[hc] + +This restricts access to blocks and enforces copy-on-write semantics. +The only way you can get hold of a writable block through the +transaction manager is by shadowing an existing block (ie. doing +copy-on-write) or allocating a fresh one. Shadowing is elided within +the same transaction so performance is reasonable. The commit method +ensures that all data is flushed before it writes the superblock. +On power failure your metadata will be as it was when last committed. + +The Space Maps +-------------- + +dm-space-map.h +dm-space-map-metadata.[hc] +dm-space-map-disk.[hc] + +On-disk data structures that keep track of reference counts of blocks. +Also acts as the allocator of new blocks. Currently two +implementations: a simpler one for managing blocks on a different +device (eg. thinly-provisioned data blocks); and one for managing +the metadata space. The latter is complicated by the need to store +its own data within the space it's managing. + +The data structures +------------------- + +dm-btree.[hc] +dm-btree-remove.c +dm-btree-spine.c +dm-btree-internal.h + +Currently there is only one data structure, a hierarchical btree. +There are plans to add more. For example, something with an +array-like interface would see a lot of use. + +The btree is 'hierarchical' in that you can define it to be composed +of nested btrees, and take multiple keys. For example, the +thin-provisioning target uses a btree with two levels of nesting. +The first maps a device id to a mapping tree, and that in turn maps a +virtual block to a physical block. + +Values stored in the btrees can have arbitrary size. Keys are always +64bits, although nesting allows you to use multiple keys. diff --git a/Documentation/device-mapper/thin-provisioning.txt b/Documentation/device-mapper/thin-provisioning.txt new file mode 100644 index 0000000..801d9d1 --- /dev/null +++ b/Documentation/device-mapper/thin-provisioning.txt @@ -0,0 +1,285 @@ +Introduction +============ + +This document descibes a collection of device-mapper targets that +between them implement thin-provisioning and snapshots. + +The main highlight of this implementation, compared to the previous +implementation of snapshots, is that it allows many virtual devices to +be stored on the same data volume. This simplifies administration and +allows the sharing of data between volumes, thus reducing disk usage. + +Another significant feature is support for an arbitrary depth of +recursive snapshots (snapshots of snapshots of snapshots ...). The +previous implementation of snapshots did this by chaining together +lookup tables, and so performance was O(depth). This new +implementation uses a single data structure to avoid this degradation +with depth. Fragmentation may still be an issue, however, in some +scenarios. + +Metadata is stored on a separate device from data, giving the +administrator some freedom, for example to: + +- Improve metadata resilience by storing metadata on a mirrored volume + but data on a non-mirrored one. + +- Improve performance by storing the metadata on SSD. + +Status +====== + +These targets are very much still in the EXPERIMENTAL state. Please +do not yet rely on them in production. But do experiment and offer us +feedback. Different use cases will have different performance +characteristics, for example due to fragmentation of the data volume. + +If you find this software is not performing as expected please mail +dm-devel@redhat.com with details and we'll try our best to improve +things for you. + +Userspace tools for checking and repairing the metadata are under +development. + +Cookbook +======== + +This section describes some quick recipes for using thin provisioning. +They use the dmsetup program to control the device-mapper driver +directly. End users will be advised to use a higher-level volume +manager such as LVM2 once support has been added. + +Pool device +----------- + +The pool device ties together the metadata volume and the data volume. +It maps I/O linearly to the data volume and updates the metadata via +two mechanisms: + +- Function calls from the thin targets + +- Device-mapper 'messages' from userspace which control the creation of new + virtual devices amongst other things. + +Setting up a fresh pool device +------------------------------ + +Setting up a pool device requires a valid metadata device, and a +data device. If you do not have an existing metadata device you can +make one by zeroing the first 4k to indicate empty metadata. + + dd if=/dev/zero of=$metadata_dev bs=4096 count=1 + +The amount of metadata you need will vary according to how many blocks +are shared between thin devices (i.e. through snapshots). If you have +less sharing than average you'll need a larger-than-average metadata device. + +As a guide, we suggest you calculate the number of bytes to use in the +metadata device as 48 * $data_dev_size / $data_block_size but round it up +to 2MB if the answer is smaller. The largest size supported is 16GB. + +If you're creating large numbers of snapshots which are recording large +amounts of change, you may need find you need to increase this. + +Reloading a pool table +---------------------- + +You may reload a pool's table, indeed this is how the pool is resized +if it runs out of space. (N.B. While specifying a different metadata +device when reloading is not forbidden at the moment, things will go +wrong if it does not route I/O to exactly the same on-disk location as +previously.) + +Using an existing pool device +----------------------------- + + dmsetup create pool \ + --table "0 20971520 thin-pool $metadata_dev $data_dev \ + $data_block_size $low_water_mark" + +$data_block_size gives the smallest unit of disk space that can be +allocated at a time expressed in units of 512-byte sectors. People +primarily interested in thin provisioning may want to use a value such +as 1024 (512KB). People doing lots of snapshotting may want a smaller value +such as 128 (64KB). If you are not zeroing newly-allocated data, +a larger $data_block_size in the region of 256000 (128MB) is suggested. +$data_block_size must be the same for the lifetime of the +metadata device. + +$low_water_mark is expressed in blocks of size $data_block_size. If +free space on the data device drops below this level then a dm event +will be triggered which a userspace daemon should catch allowing it to +extend the pool device. Only one such event will be sent. +Resuming a device with a new table itself triggers an event so the +userspace daemon can use this to detect a situation where a new table +already exceeds the threshold. + +Thin provisioning +----------------- + +i) Creating a new thinly-provisioned volume. + + To create a new thinly- provisioned volume you must send a message to an + active pool device, /dev/mapper/pool in this example. + + dmsetup message /dev/mapper/pool 0 "create_thin 0" + + Here '0' is an identifier for the volume, a 24-bit number. It's up + to the caller to allocate and manage these identifiers. If the + identifier is already in use, the message will fail with -EEXIST. + +ii) Using a thinly-provisioned volume. + + Thinly-provisioned volumes are activated using the 'thin' target: + + dmsetup create thin --table "0 2097152 thin /dev/mapper/pool 0" + + The last parameter is the identifier for the thinp device. + +Internal snapshots +------------------ + +i) Creating an internal snapshot. + + Snapshots are created with another message to the pool. + + N.B. If the origin device that you wish to snapshot is active, you + must suspend it before creating the snapshot to avoid corruption. + This is NOT enforced at the moment, so please be careful! + + dmsetup suspend /dev/mapper/thin + dmsetup message /dev/mapper/pool 0 "create_snap 1 0" + dmsetup resume /dev/mapper/thin + + Here '1' is the identifier for the volume, a 24-bit number. '0' is the + identifier for the origin device. + +ii) Using an internal snapshot. + + Once created, the user doesn't have to worry about any connection + between the origin and the snapshot. Indeed the snapshot is no + different from any other thinly-provisioned device and can be + snapshotted itself via the same method. It's perfectly legal to + have only one of them active, and there's no ordering requirement on + activating or removing them both. (This differs from conventional + device-mapper snapshots.) + + Activate it exactly the same way as any other thinly-provisioned volume: + + dmsetup create snap --table "0 2097152 thin /dev/mapper/pool 1" + +Deactivation +------------ + +All devices using a pool must be deactivated before the pool itself +can be. + + dmsetup remove thin + dmsetup remove snap + dmsetup remove pool + +Reference +========= + +'thin-pool' target +------------------ + +i) Constructor + + thin-pool <metadata dev> <data dev> <data block size (sectors)> \ + <low water mark (blocks)> [<number of feature args> [<arg>]*] + + Optional feature arguments: + - 'skip_block_zeroing': skips the zeroing of newly-provisioned blocks. + + Data block size must be between 64KB (128 sectors) and 1GB + (2097152 sectors) inclusive. + + +ii) Status + + <transaction id> <used metadata blocks>/<total metadata blocks> + <used data blocks>/<total data blocks> <held metadata root> + + + transaction id: + A 64-bit number used by userspace to help synchronise with metadata + from volume managers. + + used data blocks / total data blocks + If the number of free blocks drops below the pool's low water mark a + dm event will be sent to userspace. This event is edge-triggered and + it will occur only once after each resume so volume manager writers + should register for the event and then check the target's status. + + held metadata root: + The location, in sectors, of the metadata root that has been + 'held' for userspace read access. '-' indicates there is no + held root. This feature is not yet implemented so '-' is + always returned. + +iii) Messages + + create_thin <dev id> + + Create a new thinly-provisioned device. + <dev id> is an arbitrary unique 24-bit identifier chosen by + the caller. + + create_snap <dev id> <origin id> + + Create a new snapshot of another thinly-provisioned device. + <dev id> is an arbitrary unique 24-bit identifier chosen by + the caller. + <origin id> is the identifier of the thinly-provisioned device + of which the new device will be a snapshot. + + delete <dev id> + + Deletes a thin device. Irreversible. + + trim <dev id> <new size in sectors> + + Delete mappings from the end of a thin device. Irreversible. + You might want to use this if you're reducing the size of + your thinly-provisioned device. In many cases, due to the + sharing of blocks between devices, it is not possible to + determine in advance how much space 'trim' will release. (In + future a userspace tool might be able to perform this + calculation.) + + set_transaction_id <current id> <new id> + + Userland volume managers, such as LVM, need a way to + synchronise their external metadata with the internal metadata of the + pool target. The thin-pool target offers to store an + arbitrary 64-bit transaction id and return it on the target's + status line. To avoid races you must provide what you think + the current transaction id is when you change it with this + compare-and-swap message. + +'thin' target +------------- + +i) Constructor + + thin <pool dev> <dev id> + + pool dev: + the thin-pool device, e.g. /dev/mapper/my_pool or 253:0 + + dev id: + the internal device identifier of the device to be + activated. + +The pool doesn't store any size against the thin devices. If you +load a thin target that is smaller than you've been using previously, +then you'll have no access to blocks mapped beyond the end. If you +load a target that is bigger than before, then extra blocks will be +provisioned as and when needed. + +If you wish to reduce the size of your thin device and potentially +regain some space then send the 'trim' message to the pool. + +ii) Status + + <nr mapped sectors> <highest mapped sector> diff --git a/Documentation/devicetree/bindings/arm/arm-boards b/Documentation/devicetree/bindings/arm/arm-boards new file mode 100644 index 0000000..91f2614 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/arm-boards @@ -0,0 +1,20 @@ +ARM Versatile Application and Platform Baseboards +------------------------------------------------- +ARM's development hardware platform with connectors for customizable +core tiles. The hardware configuration of the Versatile boards is +highly customizable. + +Required properties (in root node): + compatible = "arm,versatile-ab"; /* Application baseboard */ + compatible = "arm,versatile-pb"; /* Platform baseboard */ + +Interrupt controllers: +- VIC required properties: + compatible = "arm,versatile-vic"; + interrupt-controller; + #interrupt-cells = <1>; + +- SIC required properties: + compatible = "arm,versatile-sic"; + interrupt-controller; + #interrupt-cells = <1>; diff --git a/Documentation/devicetree/bindings/arm/calxeda.txt b/Documentation/devicetree/bindings/arm/calxeda.txt new file mode 100644 index 0000000..4755caa --- /dev/null +++ b/Documentation/devicetree/bindings/arm/calxeda.txt @@ -0,0 +1,8 @@ +Calxeda Highbank Platforms Device Tree Bindings +----------------------------------------------- + +Boards with Calxeda Cortex-A9 based Highbank SOC shall have the following +properties. + +Required root node properties: + - compatible = "calxeda,highbank"; diff --git a/Documentation/devicetree/bindings/arm/fsl.txt b/Documentation/devicetree/bindings/arm/fsl.txt new file mode 100644 index 0000000..c9848ad --- /dev/null +++ b/Documentation/devicetree/bindings/arm/fsl.txt @@ -0,0 +1,26 @@ +Freescale i.MX Platforms Device Tree Bindings +----------------------------------------------- + +i.MX51 Babbage Board +Required root node properties: + - compatible = "fsl,imx51-babbage", "fsl,imx51"; + +i.MX53 Automotive Reference Design Board +Required root node properties: + - compatible = "fsl,imx53-ard", "fsl,imx53"; + +i.MX53 Evaluation Kit +Required root node properties: + - compatible = "fsl,imx53-evk", "fsl,imx53"; + +i.MX53 Quick Start Board +Required root node properties: + - compatible = "fsl,imx53-qsb", "fsl,imx53"; + +i.MX53 Smart Mobile Reference Design Board +Required root node properties: + - compatible = "fsl,imx53-smd", "fsl,imx53"; + +i.MX6 Quad SABRE Automotive Board +Required root node properties: + - compatible = "fsl,imx6q-sabreauto", "fsl,imx6q"; diff --git a/Documentation/devicetree/bindings/arm/gic.txt b/Documentation/devicetree/bindings/arm/gic.txt new file mode 100644 index 0000000..52916b4 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/gic.txt @@ -0,0 +1,55 @@ +* ARM Generic Interrupt Controller + +ARM SMP cores are often associated with a GIC, providing per processor +interrupts (PPI), shared processor interrupts (SPI) and software +generated interrupts (SGI). + +Primary GIC is attached directly to the CPU and typically has PPIs and SGIs. +Secondary GICs are cascaded into the upward interrupt controller and do not +have PPIs or SGIs. + +Main node required properties: + +- compatible : should be one of: + "arm,cortex-a9-gic" + "arm,arm11mp-gic" +- interrupt-controller : Identifies the node as an interrupt controller +- #interrupt-cells : Specifies the number of cells needed to encode an + interrupt source. The type shall be a <u32> and the value shall be 3. + + The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI + interrupts. + + The 2nd cell contains the interrupt number for the interrupt type. + SPI interrupts are in the range [0-987]. PPI interrupts are in the + range [0-15]. + + The 3rd cell is the flags, encoded as follows: + bits[3:0] trigger type and level flags. + 1 = low-to-high edge triggered + 2 = high-to-low edge triggered + 4 = active high level-sensitive + 8 = active low level-sensitive + bits[15:8] PPI interrupt cpu mask. Each bit corresponds to each of + the 8 possible cpus attached to the GIC. A bit set to '1' indicated + the interrupt is wired to that CPU. Only valid for PPI interrupts. + +- reg : Specifies base physical address(s) and size of the GIC registers. The + first region is the GIC distributor register base and size. The 2nd region is + the GIC cpu interface register base and size. + +Optional +- interrupts : Interrupt source of the parent interrupt controller. Only + present on secondary GICs. + +Example: + + intc: interrupt-controller@fff11000 { + compatible = "arm,cortex-a9-gic"; + #interrupt-cells = <3>; + #address-cells = <1>; + interrupt-controller; + reg = <0xfff11000 0x1000>, + <0xfff10100 0x100>; + }; + diff --git a/Documentation/devicetree/bindings/arm/l2cc.txt b/Documentation/devicetree/bindings/arm/l2cc.txt new file mode 100644 index 0000000..7ca5216 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/l2cc.txt @@ -0,0 +1,44 @@ +* ARM L2 Cache Controller + +ARM cores often have a separate level 2 cache controller. There are various +implementations of the L2 cache controller with compatible programming models. +The ARM L2 cache representation in the device tree should be done as follows: + +Required properties: + +- compatible : should be one of: + "arm,pl310-cache" + "arm,l220-cache" + "arm,l210-cache" +- cache-unified : Specifies the cache is a unified cache. +- cache-level : Should be set to 2 for a level 2 cache. +- reg : Physical base address and size of cache controller's memory mapped + registers. + +Optional properties: + +- arm,data-latency : Cycles of latency for Data RAM accesses. Specifies 3 cells of + read, write and setup latencies. Minimum valid values are 1. Controllers + without setup latency control should use a value of 0. +- arm,tag-latency : Cycles of latency for Tag RAM accesses. Specifies 3 cells of + read, write and setup latencies. Controllers without setup latency control + should use 0. Controllers without separate read and write Tag RAM latency + values should only use the first cell. +- arm,dirty-latency : Cycles of latency for Dirty RAMs. This is a single cell. +- arm,filter-ranges : <start length> Starting address and length of window to + filter. Addresses in the filter window are directed to the M1 port. Other + addresses will go to the M0 port. +- interrupts : 1 combined interrupt. + +Example: + +L2: cache-controller { + compatible = "arm,pl310-cache"; + reg = <0xfff12000 0x1000>; + arm,data-latency = <1 1 1>; + arm,tag-latency = <2 2 2>; + arm,filter-latency = <0x80000000 0x8000000>; + cache-unified; + cache-level = <2>; + interrupts = <45>; +}; diff --git a/Documentation/devicetree/bindings/arm/omap/dsp.txt b/Documentation/devicetree/bindings/arm/omap/dsp.txt new file mode 100644 index 0000000..d3830a3 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/omap/dsp.txt @@ -0,0 +1,14 @@ +* TI - DSP (Digital Signal Processor) + +TI DSP included in OMAP SoC + +Required properties: +- compatible : Should be "ti,omap3-c64" for OMAP3 & 4 +- ti,hwmods: "dsp" + +Examples: + +dsp { + compatible = "ti,omap3-c64"; + ti,hwmods = "dsp"; +}; diff --git a/Documentation/devicetree/bindings/arm/omap/iva.txt b/Documentation/devicetree/bindings/arm/omap/iva.txt new file mode 100644 index 0000000..6d62951 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/omap/iva.txt @@ -0,0 +1,19 @@ +* TI - IVA (Imaging and Video Accelerator) subsystem + +The IVA contain various audio, video or imaging HW accelerator +depending of the version. + +Required properties: +- compatible : Should be: + - "ti,ivahd" for OMAP4 + - "ti,iva2.2" for OMAP3 + - "ti,iva2.1" for OMAP2430 + - "ti,iva1" for OMAP2420 +- ti,hwmods: "iva" + +Examples: + +iva { + compatible = "ti,ivahd", "ti,iva"; + ti,hwmods = "iva"; +}; diff --git a/Documentation/devicetree/bindings/arm/omap/l3-noc.txt b/Documentation/devicetree/bindings/arm/omap/l3-noc.txt new file mode 100644 index 0000000..6888a5e --- /dev/null +++ b/Documentation/devicetree/bindings/arm/omap/l3-noc.txt @@ -0,0 +1,19 @@ +* TI - L3 Network On Chip (NoC) + +This version is an implementation of the generic NoC IP +provided by Arteris. + +Required properties: +- compatible : Should be "ti,omap3-l3-smx" for OMAP3 family + Should be "ti,omap4-l3-noc" for OMAP4 family +- ti,hwmods: "l3_main_1", ... One hwmod for each noc domain. + +Examples: + +ocp { + compatible = "ti,omap4-l3-noc", "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + ti,hwmods = "l3_main_1", "l3_main_2", "l3_main_3"; +}; diff --git a/Documentation/devicetree/bindings/arm/omap/mpu.txt b/Documentation/devicetree/bindings/arm/omap/mpu.txt new file mode 100644 index 0000000..1a5a42c --- /dev/null +++ b/Documentation/devicetree/bindings/arm/omap/mpu.txt @@ -0,0 +1,27 @@ +* TI - MPU (Main Processor Unit) subsystem + +The MPU subsystem contain one or several ARM cores +depending of the version. +The MPU contain CPUs, GIC, L2 cache and a local PRCM. + +Required properties: +- compatible : Should be "ti,omap3-mpu" for OMAP3 + Should be "ti,omap4-mpu" for OMAP4 +- ti,hwmods: "mpu" + +Examples: + +- For an OMAP4 SMP system: + +mpu { + compatible = "ti,omap4-mpu"; + ti,hwmods = "mpu"; +}; + + +- For an OMAP3 monocore system: + +mpu { + compatible = "ti,omap3-mpu"; + ti,hwmods = "mpu"; +}; diff --git a/Documentation/devicetree/bindings/arm/omap/omap.txt b/Documentation/devicetree/bindings/arm/omap/omap.txt new file mode 100644 index 0000000..dbdab40 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/omap/omap.txt @@ -0,0 +1,43 @@ +* Texas Instruments OMAP + +OMAP is currently using a static file per SoC family to describe the +IPs present in the SoC. +On top of that an omap_device is created to extend the platform_device +capabilities and to allow binding with one or several hwmods. +The hwmods will contain all the information to build the device: +adresse range, irq lines, dma lines, interconnect, PRCM register, +clock domain, input clocks. +For the moment just point to the existing hwmod, the next step will be +to move data from hwmod to device-tree representation. + + +Required properties: +- compatible: Every devices present in OMAP SoC should be in the + form: "ti,XXX" +- ti,hwmods: list of hwmod names (ascii strings), that comes from the OMAP + HW documentation, attached to a device. Must contain at least + one hwmod. + +Optional properties: +- ti,no_idle_on_suspend: When present, it prevents the PM to idle the module + during suspend. + + +Example: + +spinlock@1 { + compatible = "ti,omap4-spinlock"; + ti,hwmods = "spinlock"; +}; + + +Boards: + +- OMAP3 BeagleBoard : Low cost community board + compatible = "ti,omap3-beagle", "ti,omap3" + +- OMAP4 SDP : Software Developement Board + compatible = "ti,omap4-sdp", "ti,omap4430" + +- OMAP4 PandaBoard : Low cost community board + compatible = "ti,omap4-panda", "ti,omap4430" diff --git a/Documentation/devicetree/bindings/arm/picoxcell.txt b/Documentation/devicetree/bindings/arm/picoxcell.txt new file mode 100644 index 0000000..e75c0ef --- /dev/null +++ b/Documentation/devicetree/bindings/arm/picoxcell.txt @@ -0,0 +1,24 @@ +Picochip picoXcell device tree bindings. +======================================== + +Required root node properties: + - compatible: + - "picochip,pc7302-pc3x3" : PC7302 development board with PC3X3 device. + - "picochip,pc7302-pc3x2" : PC7302 development board with PC3X2 device. + - "picochip,pc3x3" : picoXcell PC3X3 device based board. + - "picochip,pc3x2" : picoXcell PC3X2 device based board. + +Timers required properties: + - compatible = "picochip,pc3x2-timer" + - interrupts : The single IRQ line for the timer. + - clock-freq : The frequency in HZ of the timer. + - reg : The register bank for the timer. + +Note: two timers are required - one for the scheduler clock and one for the +event tick/NOHZ. + +VIC required properties: + - compatible = "arm,pl192-vic". + - interrupt-controller. + - reg : The register bank for the device. + - #interrupt-cells : Must be 1. diff --git a/Documentation/devicetree/bindings/arm/pmu.txt b/Documentation/devicetree/bindings/arm/pmu.txt new file mode 100644 index 0000000..1c044eb --- /dev/null +++ b/Documentation/devicetree/bindings/arm/pmu.txt @@ -0,0 +1,21 @@ +* ARM Performance Monitor Units + +ARM cores often have a PMU for counting cpu and cache events like cache misses +and hits. The interface to the PMU is part of the ARM ARM. The ARM PMU +representation in the device tree should be done as under:- + +Required properties: + +- compatible : should be one of + "arm,cortex-a9-pmu" + "arm,cortex-a8-pmu" + "arm,arm1176-pmu" + "arm,arm1136-pmu" +- interrupts : 1 combined interrupt or 1 per core. + +Example: + +pmu { + compatible = "arm,cortex-a9-pmu"; + interrupts = <100 101>; +}; diff --git a/Documentation/devicetree/bindings/arm/primecell.txt b/Documentation/devicetree/bindings/arm/primecell.txt new file mode 100644 index 0000000..951ca46 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/primecell.txt @@ -0,0 +1,23 @@ +* ARM Primecell Peripherals + +ARM, Ltd. Primecell peripherals have a standard id register that can be used to +identify the peripheral type, vendor, and revision. This value can be used for +driver matching. + +Required properties: + +- compatible : should be a specific name for the peripheral and + "arm,primecell". The specific name will match the ARM + engineering name for the logic block in the form: "arm,pl???" + +Optional properties: + +- arm,primecell-periphid : Value to override the h/w value with + +Example: + +serial@fff36000 { + compatible = "arm,pl011", "arm,primecell"; + arm,primecell-periphid = <0x00341011>; +}; + diff --git a/Documentation/devicetree/bindings/arm/sirf.txt b/Documentation/devicetree/bindings/arm/sirf.txt new file mode 100644 index 0000000..6b07f65 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/sirf.txt @@ -0,0 +1,3 @@ +prima2 "cb" evalutation board +Required root node properties: + - compatible = "sirf,prima2-cb", "sirf,prima2"; diff --git a/Documentation/devicetree/bindings/arm/xilinx.txt b/Documentation/devicetree/bindings/arm/xilinx.txt new file mode 100644 index 0000000..6f1ed830 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/xilinx.txt @@ -0,0 +1,7 @@ +Xilinx Zynq EP107 Emulation Platform board + +This board is an emulation platform for the Zynq product which is +based on an ARM Cortex A9 processor. + +Required root node properties: + - compatible = "xlnx,zynq-ep107"; diff --git a/Documentation/devicetree/bindings/ata/calxeda-sata.txt b/Documentation/devicetree/bindings/ata/calxeda-sata.txt new file mode 100644 index 0000000..79caa56 --- /dev/null +++ b/Documentation/devicetree/bindings/ata/calxeda-sata.txt @@ -0,0 +1,17 @@ +* Calxeda SATA Controller + +SATA nodes are defined to describe on-chip Serial ATA controllers. +Each SATA controller should have its own node. + +Required properties: +- compatible : compatible list, contains "calxeda,hb-ahci" +- interrupts : <interrupt mapping for SATA IRQ> +- reg : <registers mapping> + +Example: + sata@ffe08000 { + compatible = "calxeda,hb-ahci"; + reg = <0xffe08000 0x1000>; + interrupts = <115>; + }; + diff --git a/Documentation/devicetree/bindings/powerpc/fsl/sec.txt b/Documentation/devicetree/bindings/crypto/fsl-sec2.txt index 2b6f2d4..38988ef 100644 --- a/Documentation/devicetree/bindings/powerpc/fsl/sec.txt +++ b/Documentation/devicetree/bindings/crypto/fsl-sec2.txt @@ -1,4 +1,4 @@ -Freescale SoC SEC Security Engines +Freescale SoC SEC Security Engines versions 2.x-3.x Required properties: diff --git a/Documentation/devicetree/bindings/crypto/picochip-spacc.txt b/Documentation/devicetree/bindings/crypto/picochip-spacc.txt new file mode 100644 index 0000000..d8609ec --- /dev/null +++ b/Documentation/devicetree/bindings/crypto/picochip-spacc.txt @@ -0,0 +1,23 @@ +Picochip picoXcell SPAcc (Security Protocol Accelerator) bindings + +Picochip picoXcell devices contain crypto offload engines that may be used for +IPSEC and femtocell layer 2 ciphering. + +Required properties: + - compatible : "picochip,spacc-ipsec" for the IPSEC offload engine + "picochip,spacc-l2" for the femtocell layer 2 ciphering engine. + - reg : Offset and length of the register set for this device + - interrupt-parent : The interrupt controller that controls the SPAcc + interrupt. + - interrupts : The interrupt line from the SPAcc. + - ref-clock : The input clock that drives the SPAcc. + +Example SPAcc node: + +spacc@10000 { + compatible = "picochip,spacc-ipsec"; + reg = <0x100000 0x10000>; + interrupt-parent = <&vic0>; + interrupts = <24>; + ref-clock = <&ipsec_clk>, "ref"; +}; diff --git a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt new file mode 100644 index 0000000..d1e3f44 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt @@ -0,0 +1,17 @@ +* Freescale Smart Direct Memory Access (SDMA) Controller for i.MX + +Required properties: +- compatible : Should be "fsl,<chip>-sdma" +- reg : Should contain SDMA registers location and length +- interrupts : Should contain SDMA interrupt +- fsl,sdma-ram-script-name : Should contain the full path of SDMA RAM + scripts firmware + +Examples: + +sdma@83fb0000 { + compatible = "fsl,imx51-sdma", "fsl,imx35-sdma"; + reg = <0x83fb0000 0x4000>; + interrupts = <6>; + fsl,sdma-ram-script-name = "sdma-imx51.bin"; +}; diff --git a/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt new file mode 100644 index 0000000..4363ae4 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt @@ -0,0 +1,22 @@ +* Freescale i.MX/MXC GPIO controller + +Required properties: +- compatible : Should be "fsl,<soc>-gpio" +- reg : Address and length of the register set for the device +- interrupts : Should be the port interrupt shared by all 32 pins, if + one number. If two numbers, the first one is the interrupt shared + by low 16 pins and the second one is for high 16 pins. +- gpio-controller : Marks the device node as a gpio controller. +- #gpio-cells : Should be two. The first cell is the pin number and + the second cell is used to specify optional parameters (currently + unused). + +Example: + +gpio0: gpio@73f84000 { + compatible = "fsl,imx51-gpio", "fsl,imx31-gpio"; + reg = <0x73f84000 0x4000>; + interrupts = <50 51>; + gpio-controller; + #gpio-cells = <2>; +}; diff --git a/Documentation/devicetree/bindings/gpio/gpio.txt b/Documentation/devicetree/bindings/gpio/gpio.txt index edaa84d..4e16ba4 100644 --- a/Documentation/devicetree/bindings/gpio/gpio.txt +++ b/Documentation/devicetree/bindings/gpio/gpio.txt @@ -4,17 +4,45 @@ Specifying GPIO information for devices 1) gpios property ----------------- -Nodes that makes use of GPIOs should define them using `gpios' property, -format of which is: <&gpio-controller1-phandle gpio1-specifier - &gpio-controller2-phandle gpio2-specifier - 0 /* holes are permitted, means no GPIO 3 */ - &gpio-controller4-phandle gpio4-specifier - ...>; +Nodes that makes use of GPIOs should specify them using one or more +properties, each containing a 'gpio-list': -Note that gpio-specifier length is controller dependent. + gpio-list ::= <single-gpio> [gpio-list] + single-gpio ::= <gpio-phandle> <gpio-specifier> + gpio-phandle : phandle to gpio controller node + gpio-specifier : Array of #gpio-cells specifying specific gpio + (controller specific) + +GPIO properties should be named "[<name>-]gpios". Exact +meaning of each gpios property must be documented in the device tree +binding for each device. + +For example, the following could be used to describe gpios pins to use +as chip select lines; with chip selects 0, 1 and 3 populated, and chip +select 2 left empty: + + gpio1: gpio1 { + gpio-controller + #gpio-cells = <2>; + }; + gpio2: gpio2 { + gpio-controller + #gpio-cells = <1>; + }; + [...] + chipsel-gpios = <&gpio1 12 0>, + <&gpio1 13 0>, + <0>, /* holes are permitted, means no GPIO 2 */ + <&gpio2 2>; + +Note that gpio-specifier length is controller dependent. In the +above example, &gpio1 uses 2 cells to specify a gpio, while &gpio2 +only uses one. gpio-specifier may encode: bank, pin position inside the bank, whether pin is open-drain and whether pin is logically inverted. +Exact meaning of each specifier cell is controller specific, and must +be documented in the device tree binding for the device. Example of the node using GPIOs: @@ -28,8 +56,8 @@ and empty GPIO flags as accepted by the "qe_pio_e" gpio-controller. 2) gpio-controller nodes ------------------------ -Every GPIO controller node must have #gpio-cells property defined, -this information will be used to translate gpio-specifiers. +Every GPIO controller node must both an empty "gpio-controller" +property, and have #gpio-cells contain the size of the gpio-specifier. Example of two SOC GPIO banks defined as gpio-controller nodes: diff --git a/Documentation/devicetree/bindings/gpio/gpio_keys.txt b/Documentation/devicetree/bindings/gpio/gpio_keys.txt new file mode 100644 index 0000000..5c2c021 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio_keys.txt @@ -0,0 +1,36 @@ +Device-Tree bindings for input/gpio_keys.c keyboard driver + +Required properties: + - compatible = "gpio-keys"; + +Optional properties: + - autorepeat: Boolean, Enable auto repeat feature of Linux input + subsystem. + +Each button (key) is represented as a sub-node of "gpio-keys": +Subnode properties: + + - gpios: OF device-tree gpio specification. + - label: Descriptive name of the key. + - linux,code: Keycode to emit. + +Optional subnode-properties: + - linux,input-type: Specify event type this button/key generates. + If not specified defaults to <1> == EV_KEY. + - debounce-interval: Debouncing interval time in milliseconds. + If not specified defaults to 5. + - gpio-key,wakeup: Boolean, button can wake-up the system. + +Example nodes: + + gpio_keys { + compatible = "gpio-keys"; + #address-cells = <1>; + #size-cells = <0>; + autorepeat; + button@21 { + label = "GPIO Key UP"; + linux,code = <103>; + gpios = <&gpio1 0 1>; + }; + ... diff --git a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt new file mode 100644 index 0000000..eb4b530 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt @@ -0,0 +1,8 @@ +NVIDIA Tegra 2 GPIO controller + +Required properties: +- compatible : "nvidia,tegra20-gpio" +- #gpio-cells : Should be two. The first cell is the pin number and the + second cell is used to specify optional parameters: + - bit 0 specifies polarity (0 for normal, 1 for inverted) +- gpio-controller : Marks the device node as a GPIO controller. diff --git a/Documentation/devicetree/bindings/gpio/led.txt b/Documentation/devicetree/bindings/gpio/led.txt index 064db92..141087c 100644 --- a/Documentation/devicetree/bindings/gpio/led.txt +++ b/Documentation/devicetree/bindings/gpio/led.txt @@ -8,7 +8,7 @@ node's name represents the name of the corresponding LED. LED sub-node properties: - gpios : Should specify the LED's GPIO, see "Specifying GPIO information - for devices" in Documentation/powerpc/booting-without-of.txt. Active + for devices" in Documentation/devicetree/booting-without-of.txt. Active low LEDs should be indicated using flags in the GPIO specifier. - label : (optional) The label for this LED. If omitted, the label is taken from the node name (excluding the unit address). diff --git a/Documentation/devicetree/bindings/gpio/pl061-gpio.txt b/Documentation/devicetree/bindings/gpio/pl061-gpio.txt new file mode 100644 index 0000000..a2c416b --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/pl061-gpio.txt @@ -0,0 +1,10 @@ +ARM PL061 GPIO controller + +Required properties: +- compatible : "arm,pl061", "arm,primecell" +- #gpio-cells : Should be two. The first cell is the pin number and the + second cell is used to specify optional parameters: + - bit 0 specifies polarity (0 for normal, 1 for inverted) +- gpio-controller : Marks the device node as a GPIO controller. +- interrupts : Interrupt mapping for GPIO IRQ. + diff --git a/Documentation/devicetree/bindings/i2c/arm-versatile.txt b/Documentation/devicetree/bindings/i2c/arm-versatile.txt new file mode 100644 index 0000000..361d31c --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/arm-versatile.txt @@ -0,0 +1,10 @@ +i2c Controller on ARM Versatile platform: + +Required properties: +- compatible : Must be "arm,versatile-i2c"; +- reg +- #address-cells = <1>; +- #size-cells = <0>; + +Optional properties: +- Child nodes conforming to i2c bus binding diff --git a/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt b/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt new file mode 100644 index 0000000..f3cf43b --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt @@ -0,0 +1,25 @@ +* Freescale Inter IC (I2C) and High Speed Inter IC (HS-I2C) for i.MX + +Required properties: +- compatible : Should be "fsl,<chip>-i2c" +- reg : Should contain I2C/HS-I2C registers location and length +- interrupts : Should contain I2C/HS-I2C interrupt + +Optional properties: +- clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz. + The absence of the propoerty indicates the default frequency 100 kHz. + +Examples: + +i2c@83fc4000 { /* I2C2 on i.MX51 */ + compatible = "fsl,imx51-i2c", "fsl,imx1-i2c"; + reg = <0x83fc4000 0x4000>; + interrupts = <63>; +}; + +i2c@70038000 { /* HS-I2C on i.MX51 */ + compatible = "fsl,imx51-i2c", "fsl,imx1-i2c"; + reg = <0x70038000 0x4000>; + interrupts = <64>; + clock-frequency = <400000>; +}; diff --git a/Documentation/devicetree/bindings/i2c/samsung-i2c.txt b/Documentation/devicetree/bindings/i2c/samsung-i2c.txt new file mode 100644 index 0000000..38832c7 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/samsung-i2c.txt @@ -0,0 +1,39 @@ +* Samsung's I2C controller + +The Samsung's I2C controller is used to interface with I2C devices. + +Required properties: + - compatible: value should be either of the following. + (a) "samsung, s3c2410-i2c", for i2c compatible with s3c2410 i2c. + (b) "samsung, s3c2440-i2c", for i2c compatible with s3c2440 i2c. + - reg: physical base address of the controller and length of memory mapped + region. + - interrupts: interrupt number to the cpu. + - samsung,i2c-sda-delay: Delay (in ns) applied to data line (SDA) edges. + - gpios: The order of the gpios should be the following: <SDA, SCL>. + The gpio specifier depends on the gpio controller. + +Optional properties: + - samsung,i2c-slave-addr: Slave address in multi-master enviroment. If not + specified, default value is 0. + - samsung,i2c-max-bus-freq: Desired frequency in Hz of the bus. If not + specified, the default value in Hz is 100000. + +Example: + + i2c@13870000 { + compatible = "samsung,s3c2440-i2c"; + reg = <0x13870000 0x100>; + interrupts = <345>; + samsung,i2c-sda-delay = <100>; + samsung,i2c-max-bus-freq = <100000>; + gpios = <&gpd1 2 0 /* SDA */ + &gpd1 3 0 /* SCL */>; + #address-cells = <1>; + #size-cells = <0>; + + wm8994@1a { + compatible = "wlf,wm8994"; + reg = <0x1a>; + }; + }; diff --git a/Documentation/devicetree/bindings/input/fsl-mma8450.txt b/Documentation/devicetree/bindings/input/fsl-mma8450.txt new file mode 100644 index 0000000..a00c94c --- /dev/null +++ b/Documentation/devicetree/bindings/input/fsl-mma8450.txt @@ -0,0 +1,11 @@ +* Freescale MMA8450 3-Axis Accelerometer + +Required properties: +- compatible : "fsl,mma8450". + +Example: + +accelerometer: mma8450@1c { + compatible = "fsl,mma8450"; + reg = <0x1c>; +}; diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt new file mode 100644 index 0000000..e39a0c0 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt @@ -0,0 +1,34 @@ +* Freescale Enhanced Secure Digital Host Controller (eSDHC) for i.MX + +The Enhanced Secure Digital Host Controller on Freescale i.MX family +provides an interface for MMC, SD, and SDIO types of memory cards. + +Required properties: +- compatible : Should be "fsl,<chip>-esdhc" +- reg : Should contain eSDHC registers location and length +- interrupts : Should contain eSDHC interrupt + +Optional properties: +- fsl,card-wired : Indicate the card is wired to host permanently +- fsl,cd-controller : Indicate to use controller internal card detection +- fsl,wp-controller : Indicate to use controller internal write protection +- cd-gpios : Specify GPIOs for card detection +- wp-gpios : Specify GPIOs for write protection + +Examples: + +esdhc@70004000 { + compatible = "fsl,imx51-esdhc"; + reg = <0x70004000 0x4000>; + interrupts = <1>; + fsl,cd-controller; + fsl,wp-controller; +}; + +esdhc@70008000 { + compatible = "fsl,imx51-esdhc"; + reg = <0x70008000 0x4000>; + interrupts = <2>; + cd-gpios = <&gpio0 6 0>; /* GPIO1_6 */ + wp-gpios = <&gpio0 5 0>; /* GPIO1_5 */ +}; diff --git a/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt b/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt new file mode 100644 index 0000000..7e51154 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt @@ -0,0 +1,27 @@ +* NVIDIA Tegra Secure Digital Host Controller + +This controller on Tegra family SoCs provides an interface for MMC, SD, +and SDIO types of memory cards. + +Required properties: +- compatible : Should be "nvidia,<chip>-sdhci" +- reg : Should contain SD/MMC registers location and length +- interrupts : Should contain SD/MMC interrupt + +Optional properties: +- cd-gpios : Specify GPIOs for card detection +- wp-gpios : Specify GPIOs for write protection +- power-gpios : Specify GPIOs for power control +- support-8bit : Boolean, indicates if 8-bit mode should be used. + +Example: + +sdhci@c8000200 { + compatible = "nvidia,tegra20-sdhci"; + reg = <0xc8000200 0x200>; + interrupts = <47>; + cd-gpios = <&gpio 69 0>; /* gpio PI5 */ + wp-gpios = <&gpio 57 0>; /* gpio PH1 */ + power-gpios = <&gpio 155 0>; /* gpio PT3 */ + support-8bit; +}; diff --git a/Documentation/devicetree/bindings/mtd/arm-versatile.txt b/Documentation/devicetree/bindings/mtd/arm-versatile.txt new file mode 100644 index 0000000..476845d --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/arm-versatile.txt @@ -0,0 +1,8 @@ +Flash device on ARM Versatile board + +Required properties: +- compatible : must be "arm,versatile-flash"; +- bank-width : width in bytes of flash interface. + +Optional properties: +- Subnode partition map from mtd flash binding diff --git a/Documentation/devicetree/bindings/mtd/atmel-dataflash.txt b/Documentation/devicetree/bindings/mtd/atmel-dataflash.txt new file mode 100644 index 0000000..ef66ddd --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/atmel-dataflash.txt @@ -0,0 +1,14 @@ +* Atmel Data Flash + +Required properties: +- compatible : "atmel,<model>", "atmel,<series>", "atmel,dataflash". + +Example: + +flash@1 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "atmel,at45db321d", "atmel,at45", "atmel,dataflash"; + spi-max-frequency = <25000000>; + reg = <1>; +}; diff --git a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt index 1a729f0..1ad80d5 100755..100644 --- a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt +++ b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt @@ -1,61 +1,24 @@ -CAN Device Tree Bindings ------------------------- -2011 Freescale Semiconductor, Inc. +Flexcan CAN contoller on Freescale's ARM and PowerPC system-on-a-chip (SOC). -fsl,flexcan-v1.0 nodes ------------------------ -In addition to the required compatible-, reg- and interrupt-properties, you can -also specify which clock source shall be used for the controller. +Required properties: -CPI Clock- Can Protocol Interface Clock - This CLK_SRC bit of CTRL(control register) selects the clock source to - the CAN Protocol Interface(CPI) to be either the peripheral clock - (driven by the PLL) or the crystal oscillator clock. The selected clock - is the one fed to the prescaler to generate the Serial Clock (Sclock). - The PRESDIV field of CTRL(control register) controls a prescaler that - generates the Serial Clock (Sclock), whose period defines the - time quantum used to compose the CAN waveform. +- compatible : Should be "fsl,<processor>-flexcan" -Can Engine Clock Source - There are two sources for CAN clock - - Platform Clock It represents the bus clock - - Oscillator Clock + An implementation should also claim any of the following compatibles + that it is fully backwards compatible with: - Peripheral Clock (PLL) - -------------- - | - --------- ------------- - | |CPI Clock | Prescaler | Sclock - | |---------------->| (1.. 256) |------------> - --------- ------------- - | | - -------------- ---------------------CLK_SRC - Oscillator Clock + - fsl,p1010-flexcan -- fsl,flexcan-clock-source : CAN Engine Clock Source.This property selects - the peripheral clock. PLL clock is fed to the - prescaler to generate the Serial Clock (Sclock). - Valid values are "oscillator" and "platform" - "oscillator": CAN engine clock source is oscillator clock. - "platform" The CAN engine clock source is the bus clock - (platform clock). +- reg : Offset and length of the register set for this device +- interrupts : Interrupt tuple for this device +- clock-frequency : The oscillator frequency driving the flexcan device -- fsl,flexcan-clock-divider : for the reference and system clock, an additional - clock divider can be specified. -- clock-frequency: frequency required to calculate the bitrate for FlexCAN. +Example: -Note: - - v1.0 of flexcan-v1.0 represent the IP block version for P1010 SOC. - - P1010 does not have oscillator as the Clock Source.So the default - Clock Source is platform clock. -Examples: - - can0@1c000 { - compatible = "fsl,flexcan-v1.0"; + can@1c000 { + compatible = "fsl,p1010-flexcan"; reg = <0x1c000 0x1000>; interrupts = <48 0x2>; interrupt-parent = <&mpic>; - fsl,flexcan-clock-source = "platform"; - fsl,flexcan-clock-divider = <2>; - clock-frequency = <fixed by u-boot>; + clock-frequency = <200000000>; // filled in by bootloader }; diff --git a/Documentation/devicetree/bindings/net/fsl-fec.txt b/Documentation/devicetree/bindings/net/fsl-fec.txt new file mode 100644 index 0000000..de43951 --- /dev/null +++ b/Documentation/devicetree/bindings/net/fsl-fec.txt @@ -0,0 +1,24 @@ +* Freescale Fast Ethernet Controller (FEC) + +Required properties: +- compatible : Should be "fsl,<soc>-fec" +- reg : Address and length of the register set for the device +- interrupts : Should contain fec interrupt +- phy-mode : String, operation mode of the PHY interface. + Supported values are: "mii", "gmii", "sgmii", "tbi", "rmii", + "rgmii", "rgmii-id", "rgmii-rxid", "rgmii-txid", "rtbi", "smii". +- phy-reset-gpios : Should specify the gpio for phy reset + +Optional properties: +- local-mac-address : 6 bytes, mac address + +Example: + +fec@83fec000 { + compatible = "fsl,imx51-fec", "fsl,imx27-fec"; + reg = <0x83fec000 0x4000>; + interrupts = <87>; + phy-mode = "mii"; + phy-reset-gpios = <&gpio1 14 0>; /* GPIO2_14 */ + local-mac-address = [00 04 9F 01 1B B9]; +}; diff --git a/Documentation/devicetree/bindings/net/smsc-lan91c111.txt b/Documentation/devicetree/bindings/net/smsc-lan91c111.txt new file mode 100644 index 0000000..953049b --- /dev/null +++ b/Documentation/devicetree/bindings/net/smsc-lan91c111.txt @@ -0,0 +1,10 @@ +SMSC LAN91c111 Ethernet mac + +Required properties: +- compatible = "smsc,lan91c111"; +- reg : physical address and size of registers +- interrupts : interrupt connection + +Optional properties: +- phy-device : phandle to Ethernet phy +- local-mac-address : Ethernet mac address to use diff --git a/Documentation/devicetree/bindings/net/smsc911x.txt b/Documentation/devicetree/bindings/net/smsc911x.txt new file mode 100644 index 0000000..adb5b57 --- /dev/null +++ b/Documentation/devicetree/bindings/net/smsc911x.txt @@ -0,0 +1,38 @@ +* Smart Mixed-Signal Connectivity (SMSC) LAN911x/912x Controller + +Required properties: +- compatible : Should be "smsc,lan<model>", "smsc,lan9115" +- reg : Address and length of the io space for SMSC LAN +- interrupts : Should contain SMSC LAN interrupt line +- interrupt-parent : Should be the phandle for the interrupt controller + that services interrupts for this device +- phy-mode : String, operation mode of the PHY interface. + Supported values are: "mii", "gmii", "sgmii", "tbi", "rmii", + "rgmii", "rgmii-id", "rgmii-rxid", "rgmii-txid", "rtbi", "smii". + +Optional properties: +- reg-shift : Specify the quantity to shift the register offsets by +- reg-io-width : Specify the size (in bytes) of the IO accesses that + should be performed on the device. Valid value for SMSC LAN is + 2 or 4. If it's omitted or invalid, the size would be 2. +- smsc,irq-active-high : Indicates the IRQ polarity is active-high +- smsc,irq-push-pull : Indicates the IRQ type is push-pull +- smsc,force-internal-phy : Forces SMSC LAN controller to use + internal PHY +- smsc,force-external-phy : Forces SMSC LAN controller to use + external PHY +- smsc,save-mac-address : Indicates that mac address needs to be saved + before resetting the controller +- local-mac-address : 6 bytes, mac address + +Examples: + +lan9220@f4000000 { + compatible = "smsc,lan9220", "smsc,lan9115"; + reg = <0xf4000000 0x2000000>; + phy-mode = "mii"; + interrupt-parent = <&gpio1>; + interrupts = <31>; + reg-io-width = <4>; + smsc,irq-push-pull; +}; diff --git a/Documentation/devicetree/bindings/pinmux/pinmux_nvidia.txt b/Documentation/devicetree/bindings/pinmux/pinmux_nvidia.txt new file mode 100644 index 0000000..36f82db --- /dev/null +++ b/Documentation/devicetree/bindings/pinmux/pinmux_nvidia.txt @@ -0,0 +1,5 @@ +NVIDIA Tegra 2 pinmux controller + +Required properties: +- compatible : "nvidia,tegra20-pinmux" + diff --git a/Documentation/devicetree/bindings/powerpc/fsl/board.txt b/Documentation/devicetree/bindings/powerpc/fsl/board.txt index 39e9415..380914e 100644 --- a/Documentation/devicetree/bindings/powerpc/fsl/board.txt +++ b/Documentation/devicetree/bindings/powerpc/fsl/board.txt @@ -1,3 +1,8 @@ +Freescale Reference Board Bindings + +This document describes device tree bindings for various devices that +exist on some Freescale reference boards. + * Board Control and Status (BCSR) Required properties: @@ -12,25 +17,26 @@ Example: reg = <f8000000 8000>; }; -* Freescale on board FPGA +* Freescale on-board FPGA This is the memory-mapped registers for on board FPGA. Required properities: -- compatible : should be "fsl,fpga-pixis". -- reg : should contain the address and the length of the FPPGA register - set. +- compatible: should be a board-specific string followed by a string + indicating the type of FPGA. Example: + "fsl,<board>-fpga", "fsl,fpga-pixis" +- reg: should contain the address and the length of the FPGA register set. - interrupt-parent: should specify phandle for the interrupt controller. -- interrupts : should specify event (wakeup) IRQ. +- interrupts: should specify event (wakeup) IRQ. -Example (MPC8610HPCD): +Example (P1022DS): - board-control@e8000000 { - compatible = "fsl,fpga-pixis"; - reg = <0xe8000000 32>; - interrupt-parent = <&mpic>; - interrupts = <8 8>; - }; + board-control@3,0 { + compatible = "fsl,p1022ds-fpga", "fsl,fpga-ngpixis"; + reg = <3 0 0x30>; + interrupt-parent = <&mpic>; + interrupts = <8 8 0 0>; + }; * Freescale BCSR GPIO banks diff --git a/Documentation/devicetree/bindings/powerpc/fsl/dcsr.txt b/Documentation/devicetree/bindings/powerpc/fsl/dcsr.txt new file mode 100644 index 0000000..9d54eb5 --- /dev/null +++ b/Documentation/devicetree/bindings/powerpc/fsl/dcsr.txt @@ -0,0 +1,395 @@ +=================================================================== +Debug Control and Status Register (DCSR) Binding +Copyright 2011 Freescale Semiconductor Inc. + +NOTE: The bindings described in this document are preliminary and subject +to change. Some of the compatible strings that contain only generic names +may turn out to be inappropriate, or need additional properties to describe +the integration of the block with the rest of the chip. + +===================================================================== +Debug Control and Status Register Memory Map + +Description + +This node defines the base address and range for the +defined DCSR Memory Map. Child nodes will describe the individual +debug blocks defined within this memory space. + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include "fsl,dcsr" and "simple-bus". + The DCSR space exists in the memory-mapped bus. + + - #address-cells + Usage: required + Value type: <u32> + Definition: A standard property. Defines the number of cells + or representing physical addresses in child nodes. + + - #size-cells + Usage: required + Value type: <u32> + Definition: A standard property. Defines the number of cells + or representing the size of physical addresses in + child nodes. + + - ranges + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + range of the DCSR space. + +EXAMPLE + dcsr: dcsr@f00000000 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "fsl,dcsr", "simple-bus"; + ranges = <0x00000000 0xf 0x00000000 0x01008000>; + }; + +===================================================================== +Event Processing Unit + +This node represents the region of DCSR space allocated to the EPU + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include "fsl,dcsr-epu" + + - interrupts + Usage: required + Value type: <prop_encoded-array> + Definition: Specifies the interrupts generated by the EPU. + The value of the interrupts property consists of three + interrupt specifiers. The format of the specifier is defined + by the binding document describing the node's interrupt parent. + + The EPU counters can be configured to assert the performance + monitor interrupt signal based on either counter overflow or value + match. Which counter asserted the interrupt is captured in an EPU + Counter Interrupt Status Register (EPCPUISR). + + The EPU unit can also be configured to assert either or both of + two interrupt signals based on debug event sources within the SoC. + The interrupt signals are epu_xt_int0 and epu_xt_int1. + Which event source asserted the interrupt is captured in an EPU + Interrupt Status Register (EPISR0,EPISR1). + + Interrupt numbers are lised in order (perfmon, event0, event1). + + - interrupt-parent + Usage: required + Value type: <phandle> + Definition: A single <phandle> value that points + to the interrupt parent to which the child domain + is being mapped. Value must be "&mpic" + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + +EXAMPLE + dcsr-epu@0 { + compatible = "fsl,dcsr-epu"; + interrupts = <52 2 0 0 + 84 2 0 0 + 85 2 0 0>; + interrupt-parent = <&mpic>; + reg = <0x0 0x1000>; + }; + +======================================================================= +Nexus Port Controller + +This node represents the region of DCSR space allocated to the NPC + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include "fsl,dcsr-npc" + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + The Nexus Port controller occupies two regions in the DCSR space + with distinct functionality. + + The first register range describes the Nexus Port Controller + control and status registers. + + The second register range describes the Nexus Port Controller + internal trace buffer. The NPC trace buffer is a small memory buffer + which stages the nexus trace data for transmission via the Aurora port + or to a DDR based trace buffer. In some configurations the NPC trace + buffer can be the only trace buffer used. + + +EXAMPLE + dcsr-npc { + compatible = "fsl,dcsr-npc"; + reg = <0x1000 0x1000 0x1000000 0x8000>; + }; + +======================================================================= +Nexus Concentrator + +This node represents the region of DCSR space allocated to the NXC + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include "fsl,dcsr-nxc" + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + +EXAMPLE + dcsr-nxc@2000 { + compatible = "fsl,dcsr-nxc"; + reg = <0x2000 0x1000>; + }; +======================================================================= +CoreNet Debug Controller + +This node represents the region of DCSR space allocated to +the CoreNet Debug controller. + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include "fsl,dcsr-corenet" + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + The CoreNet Debug controller occupies two regions in the DCSR space + with distinct functionality. + + The first register range describes the CoreNet Debug Controller + functionalty to perform transaction and transaction attribute matches. + + The second register range describes the CoreNet Debug Controller + functionalty to trigger event notifications and debug traces. + +EXAMPLE + dcsr-corenet { + compatible = "fsl,dcsr-corenet"; + reg = <0x8000 0x1000 0xB0000 0x1000>; + }; + +======================================================================= +Data Path Debug controller + +This node represents the region of DCSR space allocated to +the DPAA Debug Controller. This controller controls debug configuration +for the QMAN and FMAN blocks. + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include both an identifier specific to the SoC + or Debug IP of the form "fsl,<soc>-dcsr-dpaa" in addition to the + generic compatible string "fsl,dcsr-dpaa". + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + +EXAMPLE + dcsr-dpaa@9000 { + compatible = "fsl,p4080-dcsr-dpaa", "fsl,dcsr-dpaa"; + reg = <0x9000 0x1000>; + }; + +======================================================================= +OCeaN Debug controller + +This node represents the region of DCSR space allocated to +the OCN Debug Controller. + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include both an identifier specific to the SoC + or Debug IP of the form "fsl,<soc>-dcsr-ocn" in addition to the + generic compatible string "fsl,dcsr-ocn". + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + +EXAMPLE + dcsr-ocn@11000 { + compatible = "fsl,p4080-dcsr-ocn", "fsl,dcsr-ocn"; + reg = <0x11000 0x1000>; + }; + +======================================================================= +DDR Controller Debug controller + +This node represents the region of DCSR space allocated to +the OCN Debug Controller. + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include "fsl,dcsr-ddr" + + - dev-handle + Usage: required + Definition: A phandle to associate this debug node with its + component controller. + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + +EXAMPLE + dcsr-ddr@12000 { + compatible = "fsl,dcsr-ddr"; + dev-handle = <&ddr1>; + reg = <0x12000 0x1000>; + }; + +======================================================================= +Nexus Aurora Link Controller + +This node represents the region of DCSR space allocated to +the NAL Controller. + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include both an identifier specific to the SoC + or Debug IP of the form "fsl,<soc>-dcsr-nal" in addition to the + generic compatible string "fsl,dcsr-nal". + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + +EXAMPLE + dcsr-nal@18000 { + compatible = "fsl,p4080-dcsr-nal", "fsl,dcsr-nal"; + reg = <0x18000 0x1000>; + }; + + +======================================================================= +Run Control and Power Management + +This node represents the region of DCSR space allocated to +the RCPM Debug Controller. This functionlity is limited to the +control the debug operations of the SoC and cores. + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include both an identifier specific to the SoC + or Debug IP of the form "fsl,<soc>-dcsr-rcpm" in addition to the + generic compatible string "fsl,dcsr-rcpm". + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + +EXAMPLE + dcsr-rcpm@22000 { + compatible = "fsl,p4080-dcsr-rcpm", "fsl,dcsr-rcpm"; + reg = <0x22000 0x1000>; + }; + +======================================================================= +Core Service Bridge Proxy + +This node represents the region of DCSR space allocated to +the Core Service Bridge Proxies. +There is one Core Service Bridge Proxy device for each CPU in the system. +This functionlity provides access to the debug operations of the CPU. + +PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: Must include both an identifier specific to the cpu + of the form "fsl,dcsr-<cpu>-sb-proxy" in addition to the + generic compatible string "fsl,dcsr-cpu-sb-proxy". + + - cpu-handle + Usage: required + Definition: A phandle to associate this debug node with its cpu. + + - reg + Usage: required + Value type: <prop-encoded-array> + Definition: A standard property. Specifies the physical address + offset and length of the DCSR space registers of the device + configuration block. + +EXAMPLE + dcsr-cpu-sb-proxy@40000 { + compatible = "fsl,dcsr-e500mc-sb-proxy", + "fsl,dcsr-cpu-sb-proxy"; + cpu-handle = <&cpu0>; + reg = <0x40000 0x1000>; + }; + dcsr-cpu-sb-proxy@41000 { + compatible = "fsl,dcsr-e500mc-sb-proxy", + "fsl,dcsr-cpu-sb-proxy"; + cpu-handle = <&cpu1>; + reg = <0x41000 0x1000>; + }; + +======================================================================= diff --git a/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt b/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt index 70558c3..5d586e1 100644 --- a/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt +++ b/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt @@ -25,6 +25,16 @@ Required properties: are routed to IPIC, and for 85xx/86xx cpu the interrupts are routed to MPIC. +Optional properties: +- msi-address-64: 64-bit PCI address of the MSIIR register. The MSIIR register + is used for MSI messaging. The address of MSIIR in PCI address space is + the MSI message address. + + This property may be used in virtualized environments where the hypervisor + has created an alternate mapping for the MSIR block. See below for an + explanation. + + Example: msi@41600 { compatible = "fsl,mpc8610-msi", "fsl,mpic-msi"; @@ -41,3 +51,35 @@ Example: 0xe7 0>; interrupt-parent = <&mpic>; }; + +The Freescale hypervisor and msi-address-64 +------------------------------------------- +Normally, PCI devices have access to all of CCSR via an ATMU mapping. The +Freescale MSI driver calculates the address of MSIIR (in the MSI register +block) and sets that address as the MSI message address. + +In a virtualized environment, the hypervisor may need to create an IOMMU +mapping for MSIIR. The Freescale ePAPR hypervisor has this requirement +because of hardware limitations of the Peripheral Access Management Unit +(PAMU), which is currently the only IOMMU that the hypervisor supports. +The ATMU is programmed with the guest physical address, and the PAMU +intercepts transactions and reroutes them to the true physical address. + +In the PAMU, each PCI controller is given only one primary window. The +PAMU restricts DMA operations so that they can only occur within a window. +Because PCI devices must be able to DMA to memory, the primary window must +be used to cover all of the guest's memory space. + +PAMU primary windows can be divided into 256 subwindows, and each +subwindow can have its own address mapping ("guest physical" to "true +physical"). However, each subwindow has to have the same alignment, which +means they cannot be located at just any address. Because of these +restrictions, it is usually impossible to create a 4KB subwindow that +covers MSIIR where it's normally located. + +Therefore, the hypervisor has to create a subwindow inside the same +primary window used for memory, but mapped to the MSIR block (where MSIIR +lives). The first subwindow after the end of guest memory is used for +this. The address specified in the msi-address-64 property is the PCI +address of MSIIR. The hypervisor configures the PAMU to map that address to +the true physical address of MSIIR. diff --git a/Documentation/devicetree/bindings/rtc/olpc-xo1-rtc.txt b/Documentation/devicetree/bindings/rtc/olpc-xo1-rtc.txt new file mode 100644 index 0000000..a2891ce --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/olpc-xo1-rtc.txt @@ -0,0 +1,5 @@ +OLPC XO-1 RTC +~~~~~~~~~~~~~ + +Required properties: + - compatible : "olpc,xo1-rtc" diff --git a/Documentation/devicetree/bindings/serial/rs485.txt b/Documentation/devicetree/bindings/serial/rs485.txt new file mode 100644 index 0000000..1e753c6 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/rs485.txt @@ -0,0 +1,31 @@ +* RS485 serial communications + +The RTS signal is capable of automatically controlling line direction for +the built-in half-duplex mode. +The properties described hereafter shall be given to a half-duplex capable +UART node. + +Required properties: +- rs485-rts-delay: prop-encoded-array <a b> where: + * a is the delay beteween rts signal and beginning of data sent in milliseconds. + it corresponds to the delay before sending data. + * b is the delay between end of data sent and rts signal in milliseconds + it corresponds to the delay after sending data and actual release of the line. + +Optional properties: +- linux,rs485-enabled-at-boot-time: empty property telling to enable the rs485 + feature at boot time. It can be disabled later with proper ioctl. +- rs485-rx-during-tx: empty property that enables the receiving of data even + whilst sending data. + +RS485 example for Atmel USART: + usart0: serial@fff8c000 { + compatible = "atmel,at91sam9260-usart"; + reg = <0xfff8c000 0x4000>; + interrupts = <7>; + atmel,use-dma-rx; + atmel,use-dma-tx; + linux,rs485-enabled-at-boot-time; + rs485-rts-delay = <0 200>; // in milliseconds + }; + diff --git a/Documentation/devicetree/bindings/sound/soc/codecs/fsl-sgtl5000.txt b/Documentation/devicetree/bindings/sound/soc/codecs/fsl-sgtl5000.txt new file mode 100644 index 0000000..2c3cd41 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/soc/codecs/fsl-sgtl5000.txt @@ -0,0 +1,11 @@ +* Freescale SGTL5000 Stereo Codec + +Required properties: +- compatible : "fsl,sgtl5000". + +Example: + +codec: sgtl5000@0a { + compatible = "fsl,sgtl5000"; + reg = <0x0a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8510.txt b/Documentation/devicetree/bindings/sound/wm8510.txt new file mode 100644 index 0000000..fa1a32b --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8510.txt @@ -0,0 +1,18 @@ +WM8510 audio CODEC + +This device supports both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8510" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8510@1a { + compatible = "wlf,wm8510"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8523.txt b/Documentation/devicetree/bindings/sound/wm8523.txt new file mode 100644 index 0000000..0474618 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8523.txt @@ -0,0 +1,16 @@ +WM8523 audio CODEC + +This device supports I2C only. + +Required properties: + + - compatible : "wlf,wm8523" + + - reg : the I2C address of the device. + +Example: + +codec: wm8523@1a { + compatible = "wlf,wm8523"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8580.txt b/Documentation/devicetree/bindings/sound/wm8580.txt new file mode 100644 index 0000000..7d9821f --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8580.txt @@ -0,0 +1,16 @@ +WM8580 audio CODEC + +This device supports I2C only. + +Required properties: + + - compatible : "wlf,wm8580" + + - reg : the I2C address of the device. + +Example: + +codec: wm8580@1a { + compatible = "wlf,wm8580"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8711.txt b/Documentation/devicetree/bindings/sound/wm8711.txt new file mode 100644 index 0000000..8ed9998 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8711.txt @@ -0,0 +1,18 @@ +WM8711 audio CODEC + +This device supports both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8711" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8711@1a { + compatible = "wlf,wm8711"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8728.txt b/Documentation/devicetree/bindings/sound/wm8728.txt new file mode 100644 index 0000000..a8b5c36 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8728.txt @@ -0,0 +1,18 @@ +WM8728 audio CODEC + +This device supports both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8728" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8728@1a { + compatible = "wlf,wm8728"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8731.txt b/Documentation/devicetree/bindings/sound/wm8731.txt new file mode 100644 index 0000000..15f7004 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8731.txt @@ -0,0 +1,18 @@ +WM8731 audio CODEC + +This device supports both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8731" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8731@1a { + compatible = "wlf,wm8731"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8737.txt b/Documentation/devicetree/bindings/sound/wm8737.txt new file mode 100644 index 0000000..4bc2cea --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8737.txt @@ -0,0 +1,18 @@ +WM8737 audio CODEC + +This device supports both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8737" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8737@1a { + compatible = "wlf,wm8737"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8741.txt b/Documentation/devicetree/bindings/sound/wm8741.txt new file mode 100644 index 0000000..74bda58 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8741.txt @@ -0,0 +1,18 @@ +WM8741 audio CODEC + +This device supports both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8741" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8741@1a { + compatible = "wlf,wm8741"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8750.txt b/Documentation/devicetree/bindings/sound/wm8750.txt new file mode 100644 index 0000000..8db239f --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8750.txt @@ -0,0 +1,18 @@ +WM8750 and WM8987 audio CODECs + +These devices support both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8750" or "wlf,wm8987" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8750@1a { + compatible = "wlf,wm8750"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8753.txt b/Documentation/devicetree/bindings/sound/wm8753.txt new file mode 100644 index 0000000..e65277a --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8753.txt @@ -0,0 +1,18 @@ +WM8753 audio CODEC + +This device supports both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8753" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8737@1a { + compatible = "wlf,wm8753"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8770.txt b/Documentation/devicetree/bindings/sound/wm8770.txt new file mode 100644 index 0000000..866e00c --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8770.txt @@ -0,0 +1,16 @@ +WM8770 audio CODEC + +This device supports SPI. + +Required properties: + + - compatible : "wlf,wm8770" + + - reg : the chip select number. + +Example: + +codec: wm8770@1 { + compatible = "wlf,wm8770"; + reg = <1>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8776.txt b/Documentation/devicetree/bindings/sound/wm8776.txt new file mode 100644 index 0000000..3b9ca49 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8776.txt @@ -0,0 +1,18 @@ +WM8776 audio CODEC + +This device supports both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8776" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8776@1a { + compatible = "wlf,wm8776"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/sound/wm8804.txt b/Documentation/devicetree/bindings/sound/wm8804.txt new file mode 100644 index 0000000..4d3a56f --- /dev/null +++ b/Documentation/devicetree/bindings/sound/wm8804.txt @@ -0,0 +1,18 @@ +WM8804 audio CODEC + +This device supports both I2C and SPI (configured with pin strapping +on the board). + +Required properties: + + - compatible : "wlf,wm8804" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + +Example: + +codec: wm8804@1a { + compatible = "wlf,wm8804"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt new file mode 100644 index 0000000..9841057 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt @@ -0,0 +1,22 @@ +* Freescale (Enhanced) Configurable Serial Peripheral Interface + (CSPI/eCSPI) for i.MX + +Required properties: +- compatible : Should be "fsl,<soc>-cspi" or "fsl,<soc>-ecspi" +- reg : Offset and length of the register set for the device +- interrupts : Should contain CSPI/eCSPI interrupt +- fsl,spi-num-chipselects : Contains the number of the chipselect +- cs-gpios : Specifies the gpio pins to be used for chipselects. + +Example: + +ecspi@70010000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,imx51-ecspi"; + reg = <0x70010000 0x4000>; + interrupts = <36>; + fsl,spi-num-chipselects = <2>; + cs-gpios = <&gpio3 24 0>, /* GPIO4_24 */ + <&gpio3 25 0>; /* GPIO4_25 */ +}; diff --git a/Documentation/devicetree/bindings/spi/spi_nvidia.txt b/Documentation/devicetree/bindings/spi/spi_nvidia.txt new file mode 100644 index 0000000..6b9e518 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi_nvidia.txt @@ -0,0 +1,5 @@ +NVIDIA Tegra 2 SPI device + +Required properties: +- compatible : should be "nvidia,tegra20-spi". +- gpios : should specify GPIOs used for chipselect. diff --git a/Documentation/devicetree/bindings/spi/spi_pl022.txt b/Documentation/devicetree/bindings/spi/spi_pl022.txt new file mode 100644 index 0000000..306ec3f --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi_pl022.txt @@ -0,0 +1,12 @@ +ARM PL022 SPI controller + +Required properties: +- compatible : "arm,pl022", "arm,primecell" +- reg : Offset and length of the register set for the device +- interrupts : Should contain SPI controller interrupt + +Optional properties: +- cs-gpios : should specify GPIOs used for chipselects. + The gpios will be referred to as reg = <index> in the SPI child nodes. + If unspecified, a single SPI device without a chip select can be used. + diff --git a/Documentation/devicetree/bindings/tty/serial/atmel-usart.txt b/Documentation/devicetree/bindings/tty/serial/atmel-usart.txt new file mode 100644 index 0000000..a49d9a1 --- /dev/null +++ b/Documentation/devicetree/bindings/tty/serial/atmel-usart.txt @@ -0,0 +1,27 @@ +* Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART) + +Required properties: +- compatible: Should be "atmel,<chip>-usart" + The compatible <chip> indicated will be the first SoC to support an + additional mode or an USART new feature. +- reg: Should contain registers location and length +- interrupts: Should contain interrupt + +Optional properties: +- atmel,use-dma-rx: use of PDC or DMA for receiving data +- atmel,use-dma-tx: use of PDC or DMA for transmitting data + +<chip> compatible description: +- at91rm9200: legacy USART support +- at91sam9260: generic USART implementation for SAM9 SoCs + +Example: + + usart0: serial@fff8c000 { + compatible = "atmel,at91sam9260-usart"; + reg = <0xfff8c000 0x4000>; + interrupts = <7>; + atmel,use-dma-rx; + atmel,use-dma-tx; + }; + diff --git a/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt b/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt new file mode 100644 index 0000000..a9c0406 --- /dev/null +++ b/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt @@ -0,0 +1,19 @@ +* Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART) + +Required properties: +- compatible : Should be "fsl,<soc>-uart" +- reg : Address and length of the register set for the device +- interrupts : Should contain uart interrupt + +Optional properties: +- fsl,uart-has-rtscts : Indicate the uart has rts and cts +- fsl,irda-mode : Indicate the uart supports irda mode + +Example: + +uart@73fbc000 { + compatible = "fsl,imx51-uart", "fsl,imx21-uart"; + reg = <0x73fbc000 0x4000>; + interrupts = <31>; + fsl,uart-has-rtscts; +}; diff --git a/Documentation/devicetree/bindings/tty/serial/msm_serial.txt b/Documentation/devicetree/bindings/tty/serial/msm_serial.txt new file mode 100644 index 0000000..aef383e --- /dev/null +++ b/Documentation/devicetree/bindings/tty/serial/msm_serial.txt @@ -0,0 +1,27 @@ +* Qualcomm MSM UART + +Required properties: +- compatible : + - "qcom,msm-uart", and one of "qcom,msm-hsuart" or + "qcom,msm-lsuart". +- reg : offset and length of the register set for the device + for the hsuart operating in compatible mode, there should be a + second pair describing the gsbi registers. +- interrupts : should contain the uart interrupt. + +There are two different UART blocks used in MSM devices, +"qcom,msm-hsuart" and "qcom,msm-lsuart". The msm-serial driver is +able to handle both of these, and matches against the "qcom,msm-uart" +as the compatibility. + +The registers for the "qcom,msm-hsuart" device need to specify both +register blocks, even for the common driver. + +Example: + + uart@19c400000 { + compatible = "qcom,msm-hsuart", "qcom,msm-uart"; + reg = <0x19c40000 0x1000>, + <0x19c00000 0x1000>; + interrupts = <195>; + }; diff --git a/Documentation/devicetree/bindings/tty/serial/of-serial.txt b/Documentation/devicetree/bindings/tty/serial/of-serial.txt new file mode 100644 index 0000000..3f89cbd --- /dev/null +++ b/Documentation/devicetree/bindings/tty/serial/of-serial.txt @@ -0,0 +1,39 @@ +* UART (Universal Asynchronous Receiver/Transmitter) + +Required properties: +- compatible : one of: + - "ns8250" + - "ns16450" + - "ns16550a" + - "ns16550" + - "ns16750" + - "ns16850" + - "nvidia,tegra20-uart" + - "ibm,qpace-nwp-serial" + - "altr,16550-FIFO32" + - "altr,16550-FIFO64" + - "altr,16550-FIFO128" + - "serial" if the port type is unknown. +- reg : offset and length of the register set for the device. +- interrupts : should contain uart interrupt. +- clock-frequency : the input clock frequency for the UART. + +Optional properties: +- current-speed : the current active speed of the UART. +- reg-offset : offset to apply to the mapbase from the start of the registers. +- reg-shift : quantity to shift the register offsets by. +- reg-io-width : the size (in bytes) of the IO accesses that should be + performed on the device. There are some systems that require 32-bit + accesses to the UART (e.g. TI davinci). +- used-by-rtas : set to indicate that the port is in use by the OpenFirmware + RTAS and should not be registered. + +Example: + + uart@80230000 { + compatible = "ns8250"; + reg = <0x80230000 0x100>; + clock-frequency = <3686400>; + interrupts = <10>; + reg-shift = <2>; + }; diff --git a/Documentation/devicetree/bindings/tty/serial/snps-dw-apb-uart.txt b/Documentation/devicetree/bindings/tty/serial/snps-dw-apb-uart.txt new file mode 100644 index 0000000..f13f1c5 --- /dev/null +++ b/Documentation/devicetree/bindings/tty/serial/snps-dw-apb-uart.txt @@ -0,0 +1,25 @@ +* Synopsys DesignWare ABP UART + +Required properties: +- compatible : "snps,dw-apb-uart" +- reg : offset and length of the register set for the device. +- interrupts : should contain uart interrupt. +- clock-frequency : the input clock frequency for the UART. + +Optional properties: +- reg-shift : quantity to shift the register offsets by. If this property is + not present then the register offsets are not shifted. +- reg-io-width : the size (in bytes) of the IO accesses that should be + performed on the device. If this property is not present then single byte + accesses are used. + +Example: + + uart@80230000 { + compatible = "snps,dw-apb-uart"; + reg = <0x80230000 0x100>; + clock-frequency = <3686400>; + interrupts = <10>; + reg-shift = <2>; + reg-io-width = <4>; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt new file mode 100644 index 0000000..874921e --- /dev/null +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -0,0 +1,41 @@ +Device tree binding vendor prefix registry. Keep list in alphabetical order. + +This isn't an exhaustive list, but you should add new prefixes to it before +using them to avoid name-space collisions. + +adi Analog Devices, Inc. +amcc Applied Micro Circuits Corporation (APM, formally AMCC) +apm Applied Micro Circuits Corporation (APM) +arm ARM Ltd. +atmel Atmel Corporation +chrp Common Hardware Reference Platform +dallas Maxim Integrated Products (formerly Dallas Semiconductor) +denx Denx Software Engineering +epson Seiko Epson Corp. +est ESTeem Wireless Modems +fsl Freescale Semiconductor +GEFanuc GE Fanuc Intelligent Platforms Embedded Systems, Inc. +gef GE Fanuc Intelligent Platforms Embedded Systems, Inc. +hp Hewlett Packard +ibm International Business Machines (IBM) +idt Integrated Device Technologies, Inc. +intercontrol Inter Control Group +linux Linux-specific binding +marvell Marvell Technology Group Ltd. +maxim Maxim Integrated Products +mosaixtech Mosaix Technologies, Inc. +national National Semiconductor +nintendo Nintendo +nvidia NVIDIA +nxp NXP Semiconductors +powervr Imagination Technologies +qcom Qualcomm, Inc. +ramtron Ramtron International +samsung Samsung Semiconductor +schindler Schindler +sil Silicon Image +simtek +sirf SiRF Technology, Inc. +stericsson ST-Ericsson +ti Texas Instruments +xlnx Xilinx diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt new file mode 100644 index 0000000..5069c1b --- /dev/null +++ b/Documentation/devicetree/bindings/virtio/mmio.txt @@ -0,0 +1,17 @@ +* virtio memory mapped device + +See http://ozlabs.org/~rusty/virtio-spec/ for more details. + +Required properties: + +- compatible: "virtio,mmio" compatibility string +- reg: control registers base address and size including configuration space +- interrupts: interrupt generated by the device + +Example: + + virtio_block@3000 { + compatible = "virtio,mmio"; + reg = <0x3000 0x100>; + interrupts = <41>; + } diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt new file mode 100644 index 0000000..2144af1 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt @@ -0,0 +1,14 @@ +* Freescale i.MX Watchdog Timer (WDT) Controller + +Required properties: +- compatible : Should be "fsl,<soc>-wdt" +- reg : Should contain WDT registers location and length +- interrupts : Should contain WDT interrupt + +Examples: + +wdt@73f98000 { + compatible = "fsl,imx51-wdt", "fsl,imx21-wdt"; + reg = <0x73f98000 0x4000>; + interrupts = <58>; +}; diff --git a/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt b/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt new file mode 100644 index 0000000..79ead82 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt @@ -0,0 +1,11 @@ +* Samsung's Watchdog Timer Controller + +The Samsung's Watchdog controller is used for resuming system operation +after a preset amount of time during which the WDT reset event has not +occured. + +Required properties: +- compatible : should be "samsung,s3c2410-wdt" +- reg : base physical address of the controller and length of memory mapped + region. +- interrupts : interrupt number to the cpu. diff --git a/Documentation/dmaengine.txt b/Documentation/dmaengine.txt index 5a0cb1e..94b7e0f 100644 --- a/Documentation/dmaengine.txt +++ b/Documentation/dmaengine.txt @@ -10,87 +10,181 @@ NOTE: For DMA Engine usage in async_tx please see: Below is a guide to device driver writers on how to use the Slave-DMA API of the DMA Engine. This is applicable only for slave DMA usage only. -The slave DMA usage consists of following steps +The slave DMA usage consists of following steps: 1. Allocate a DMA slave channel 2. Set slave and controller specific parameters 3. Get a descriptor for transaction -4. Submit the transaction and wait for callback notification +4. Submit the transaction +5. Issue pending requests and wait for callback notification 1. Allocate a DMA slave channel -Channel allocation is slightly different in the slave DMA context, client -drivers typically need a channel from a particular DMA controller only and even -in some cases a specific channel is desired. To request a channel -dma_request_channel() API is used. - -Interface: -struct dma_chan *dma_request_channel(dma_cap_mask_t mask, - dma_filter_fn filter_fn, - void *filter_param); -where dma_filter_fn is defined as: -typedef bool (*dma_filter_fn)(struct dma_chan *chan, void *filter_param); - -When the optional 'filter_fn' parameter is set to NULL dma_request_channel -simply returns the first channel that satisfies the capability mask. Otherwise, -when the mask parameter is insufficient for specifying the necessary channel, -the filter_fn routine can be used to disposition the available channels in the -system. The filter_fn routine is called once for each free channel in the -system. Upon seeing a suitable channel filter_fn returns DMA_ACK which flags -that channel to be the return value from dma_request_channel. A channel -allocated via this interface is exclusive to the caller, until -dma_release_channel() is called. + + Channel allocation is slightly different in the slave DMA context, + client drivers typically need a channel from a particular DMA + controller only and even in some cases a specific channel is desired. + To request a channel dma_request_channel() API is used. + + Interface: + struct dma_chan *dma_request_channel(dma_cap_mask_t mask, + dma_filter_fn filter_fn, + void *filter_param); + where dma_filter_fn is defined as: + typedef bool (*dma_filter_fn)(struct dma_chan *chan, void *filter_param); + + The 'filter_fn' parameter is optional, but highly recommended for + slave and cyclic channels as they typically need to obtain a specific + DMA channel. + + When the optional 'filter_fn' parameter is NULL, dma_request_channel() + simply returns the first channel that satisfies the capability mask. + + Otherwise, the 'filter_fn' routine will be called once for each free + channel which has a capability in 'mask'. 'filter_fn' is expected to + return 'true' when the desired DMA channel is found. + + A channel allocated via this interface is exclusive to the caller, + until dma_release_channel() is called. 2. Set slave and controller specific parameters -Next step is always to pass some specific information to the DMA driver. Most of -the generic information which a slave DMA can use is in struct dma_slave_config. -It allows the clients to specify DMA direction, DMA addresses, bus widths, DMA -burst lengths etc. If some DMA controllers have more parameters to be sent then -they should try to embed struct dma_slave_config in their controller specific -structure. That gives flexibility to client to pass more parameters, if -required. - -Interface: -int dmaengine_slave_config(struct dma_chan *chan, - struct dma_slave_config *config) + + Next step is always to pass some specific information to the DMA + driver. Most of the generic information which a slave DMA can use + is in struct dma_slave_config. This allows the clients to specify + DMA direction, DMA addresses, bus widths, DMA burst lengths etc + for the peripheral. + + If some DMA controllers have more parameters to be sent then they + should try to embed struct dma_slave_config in their controller + specific structure. That gives flexibility to client to pass more + parameters, if required. + + Interface: + int dmaengine_slave_config(struct dma_chan *chan, + struct dma_slave_config *config) + + Please see the dma_slave_config structure definition in dmaengine.h + for a detailed explaination of the struct members. Please note + that the 'direction' member will be going away as it duplicates the + direction given in the prepare call. 3. Get a descriptor for transaction -For slave usage the various modes of slave transfers supported by the -DMA-engine are: -slave_sg - DMA a list of scatter gather buffers from/to a peripheral -dma_cyclic - Perform a cyclic DMA operation from/to a peripheral till the + + For slave usage the various modes of slave transfers supported by the + DMA-engine are: + + slave_sg - DMA a list of scatter gather buffers from/to a peripheral + dma_cyclic - Perform a cyclic DMA operation from/to a peripheral till the operation is explicitly stopped. -The non NULL return of this transfer API represents a "descriptor" for the given -transaction. - -Interface: -struct dma_async_tx_descriptor *(*chan->device->device_prep_dma_sg)( - struct dma_chan *chan, - struct scatterlist *dst_sg, unsigned int dst_nents, - struct scatterlist *src_sg, unsigned int src_nents, + + A non-NULL return of this transfer API represents a "descriptor" for + the given transaction. + + Interface: + struct dma_async_tx_descriptor *(*chan->device->device_prep_slave_sg)( + struct dma_chan *chan, struct scatterlist *sgl, + unsigned int sg_len, enum dma_data_direction direction, unsigned long flags); -struct dma_async_tx_descriptor *(*chan->device->device_prep_dma_cyclic)( + + struct dma_async_tx_descriptor *(*chan->device->device_prep_dma_cyclic)( struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len, size_t period_len, enum dma_data_direction direction); -4. Submit the transaction and wait for callback notification -To schedule the transaction to be scheduled by dma device, the "descriptor" -returned in above (3) needs to be submitted. -To tell the dma driver that a transaction is ready to be serviced, the -descriptor->submit() callback needs to be invoked. This chains the descriptor to -the pending queue. -The transactions in the pending queue can be activated by calling the -issue_pending API. If channel is idle then the first transaction in queue is -started and subsequent ones queued up. -On completion of the DMA operation the next in queue is submitted and a tasklet -triggered. The tasklet would then call the client driver completion callback -routine for notification, if set. -Interface: -void dma_async_issue_pending(struct dma_chan *chan); - -============================================================================== - -Additional usage notes for dma driver writers -1/ Although DMA engine specifies that completion callback routines cannot submit -any new operations, but typically for slave DMA subsequent transaction may not -be available for submit prior to callback routine being called. This requirement -is not a requirement for DMA-slave devices. But they should take care to drop -the spin-lock they might be holding before calling the callback routine + The peripheral driver is expected to have mapped the scatterlist for + the DMA operation prior to calling device_prep_slave_sg, and must + keep the scatterlist mapped until the DMA operation has completed. + The scatterlist must be mapped using the DMA struct device. So, + normal setup should look like this: + + nr_sg = dma_map_sg(chan->device->dev, sgl, sg_len); + if (nr_sg == 0) + /* error */ + + desc = chan->device->device_prep_slave_sg(chan, sgl, nr_sg, + direction, flags); + + Once a descriptor has been obtained, the callback information can be + added and the descriptor must then be submitted. Some DMA engine + drivers may hold a spinlock between a successful preparation and + submission so it is important that these two operations are closely + paired. + + Note: + Although the async_tx API specifies that completion callback + routines cannot submit any new operations, this is not the + case for slave/cyclic DMA. + + For slave DMA, the subsequent transaction may not be available + for submission prior to callback function being invoked, so + slave DMA callbacks are permitted to prepare and submit a new + transaction. + + For cyclic DMA, a callback function may wish to terminate the + DMA via dmaengine_terminate_all(). + + Therefore, it is important that DMA engine drivers drop any + locks before calling the callback function which may cause a + deadlock. + + Note that callbacks will always be invoked from the DMA + engines tasklet, never from interrupt context. + +4. Submit the transaction + + Once the descriptor has been prepared and the callback information + added, it must be placed on the DMA engine drivers pending queue. + + Interface: + dma_cookie_t dmaengine_submit(struct dma_async_tx_descriptor *desc) + + This returns a cookie can be used to check the progress of DMA engine + activity via other DMA engine calls not covered in this document. + + dmaengine_submit() will not start the DMA operation, it merely adds + it to the pending queue. For this, see step 5, dma_async_issue_pending. + +5. Issue pending DMA requests and wait for callback notification + + The transactions in the pending queue can be activated by calling the + issue_pending API. If channel is idle then the first transaction in + queue is started and subsequent ones queued up. + + On completion of each DMA operation, the next in queue is started and + a tasklet triggered. The tasklet will then call the client driver + completion callback routine for notification, if set. + + Interface: + void dma_async_issue_pending(struct dma_chan *chan); + +Further APIs: + +1. int dmaengine_terminate_all(struct dma_chan *chan) + + This causes all activity for the DMA channel to be stopped, and may + discard data in the DMA FIFO which hasn't been fully transferred. + No callback functions will be called for any incomplete transfers. + +2. int dmaengine_pause(struct dma_chan *chan) + + This pauses activity on the DMA channel without data loss. + +3. int dmaengine_resume(struct dma_chan *chan) + + Resume a previously paused DMA channel. It is invalid to resume a + channel which is not currently paused. + +4. enum dma_status dma_async_is_tx_complete(struct dma_chan *chan, + dma_cookie_t cookie, dma_cookie_t *last, dma_cookie_t *used) + + This can be used to check the status of the channel. Please see + the documentation in include/linux/dmaengine.h for a more complete + description of this API. + + This can be used in conjunction with dma_async_is_complete() and + the cookie returned from 'descriptor->submit()' to check for + completion of a specific DMA transaction. + + Note: + Not all DMA engine drivers can return reliable information for + a running DMA channel. It is recommended that DMA engine users + pause or stop (via dmaengine_terminate_all) the channel before + using this API. diff --git a/Documentation/driver-model/binding.txt b/Documentation/driver-model/binding.txt index f7ec9d6..abfc8e2 100644 --- a/Documentation/driver-model/binding.txt +++ b/Documentation/driver-model/binding.txt @@ -48,10 +48,6 @@ devclass_add_device is called to enumerate the device within the class and actually register it with the class, which happens with the class's register_dev callback. -NOTE: The device class structures and core routines to manipulate them -are not in the mainline kernel, so the discussion is still a bit -speculative. - Driver ~~~~~~ diff --git a/Documentation/driver-model/device.txt b/Documentation/driver-model/device.txt index b2ff426..1e70220 100644 --- a/Documentation/driver-model/device.txt +++ b/Documentation/driver-model/device.txt @@ -45,33 +45,52 @@ struct device_attribute { const char *buf, size_t count); }; -Attributes of devices can be exported via drivers using a simple -procfs-like interface. +Attributes of devices can be exported by a device driver through sysfs. Please see Documentation/filesystems/sysfs.txt for more information on how sysfs works. +As explained in Documentation/kobject.txt, device attributes must be be +created before the KOBJ_ADD uevent is generated. The only way to realize +that is by defining an attribute group. + Attributes are declared using a macro called DEVICE_ATTR: #define DEVICE_ATTR(name,mode,show,store) Example: -DEVICE_ATTR(power,0644,show_power,store_power); +static DEVICE_ATTR(type, 0444, show_type, NULL); +static DEVICE_ATTR(power, 0644, show_power, store_power); -This declares a structure of type struct device_attribute named -'dev_attr_power'. This can then be added and removed to the device's -directory using: +This declares two structures of type struct device_attribute with respective +names 'dev_attr_type' and 'dev_attr_power'. These two attributes can be +organized as follows into a group: -int device_create_file(struct device *device, struct device_attribute * entry); -void device_remove_file(struct device * dev, struct device_attribute * attr); +static struct attribute *dev_attrs[] = { + &dev_attr_type.attr, + &dev_attr_power.attr, + NULL, +}; -Example: +static struct attribute_group dev_attr_group = { + .attrs = dev_attrs, +}; + +static const struct attribute_group *dev_attr_groups[] = { + &dev_attr_group, + NULL, +}; + +This array of groups can then be associated with a device by setting the +group pointer in struct device before device_register() is invoked: -device_create_file(dev,&dev_attr_power); -device_remove_file(dev,&dev_attr_power); + dev->groups = dev_attr_groups; + device_register(dev); -The file name will be 'power' with a mode of 0644 (-rw-r--r--). +The device_register() function will use the 'groups' pointer to create the +device attributes and the device_unregister() function will use this pointer +to remove the device attributes. Word of warning: While the kernel allows device_create_file() and device_remove_file() to be called on a device at any time, userspace has @@ -84,24 +103,4 @@ not know about the new attributes. This is important for device driver that need to publish additional attributes for a device at driver probe time. If the device driver simply calls device_create_file() on the device structure passed to it, then -userspace will never be notified of the new attributes. Instead, it should -probably use class_create() and class->dev_attrs to set up a list of -desired attributes in the modules_init function, and then in the .probe() -hook, and then use device_create() to create a new device as a child -of the probed device. The new device will generate a new uevent and -properly advertise the new attributes to userspace. - -For example, if a driver wanted to add the following attributes: -struct device_attribute mydriver_attribs[] = { - __ATTR(port_count, 0444, port_count_show), - __ATTR(serial_number, 0444, serial_number_show), - NULL -}; - -Then in the module init function is would do: - mydriver_class = class_create(THIS_MODULE, "my_attrs"); - mydriver_class.dev_attr = mydriver_attribs; - -And assuming 'dev' is the struct device passed into the probe hook, the driver -probe function would do something like: - create_device(&mydriver_class, dev, chrdev, &private_data, "my_name"); +userspace will never be notified of the new attributes. diff --git a/Documentation/driver-model/overview.txt b/Documentation/driver-model/overview.txt index 07236ed..6a8f9a8 100644 --- a/Documentation/driver-model/overview.txt +++ b/Documentation/driver-model/overview.txt @@ -30,7 +30,7 @@ management, and hot plug. In particular, the model dictated by Intel and Microsoft (namely ACPI) ensures that almost every device on almost any bus on an x86-compatible system can work within this paradigm. Of course, not every bus is able to support all such operations, although most -buses support a most of those operations. +buses support most of those operations. Downstream Access @@ -46,25 +46,29 @@ struct pci_dev now looks like this: struct pci_dev { ... - struct device dev; + struct device dev; /* Generic device interface */ + ... }; -Note first that it is statically allocated. This means only one allocation on -device discovery. Note also that it is at the _end_ of struct pci_dev. This is -to make people think about what they're doing when switching between the bus -driver and the global driver; and to prevent against mindless casts between -the two. +Note first that the struct device dev within the struct pci_dev is +statically allocated. This means only one allocation on device discovery. + +Note also that that struct device dev is not necessarily defined at the +front of the pci_dev structure. This is to make people think about what +they're doing when switching between the bus driver and the global driver, +and to discourage meaningless and incorrect casts between the two. The PCI bus layer freely accesses the fields of struct device. It knows about the structure of struct pci_dev, and it should know the structure of struct device. Individual PCI device drivers that have been converted to the current driver model generally do not and should not touch the fields of struct device, -unless there is a strong compelling reason to do so. +unless there is a compelling reason to do so. -This abstraction is prevention of unnecessary pain during transitional phases. -If the name of the field changes or is removed, then every downstream driver -will break. On the other hand, if only the bus layer (and not the device -layer) accesses struct device, it is only that layer that needs to change. +The above abstraction prevents unnecessary pain during transitional phases. +If it were not done this way, then when a field was renamed or removed, every +downstream driver would break. On the other hand, if only the bus layer +(and not the device layer) accesses the struct device, it is only the bus +layer that needs to change. User Interface @@ -73,15 +77,27 @@ User Interface By virtue of having a complete hierarchical view of all the devices in the system, exporting a complete hierarchical view to userspace becomes relatively easy. This has been accomplished by implementing a special purpose virtual -file system named sysfs. It is hence possible for the user to mount the -whole sysfs filesystem anywhere in userspace. +file system named sysfs. + +Almost all mainstream Linux distros mount this filesystem automatically; you +can see some variation of the following in the output of the "mount" command: + +$ mount +... +none on /sys type sysfs (rw,noexec,nosuid,nodev) +... +$ + +The auto-mounting of sysfs is typically accomplished by an entry similar to +the following in the /etc/fstab file: + +none /sys sysfs defaults 0 0 -This can be done permanently by providing the following entry into the -/etc/fstab (under the provision that the mount point does exist, of course): +or something similar in the /lib/init/fstab file on Debian-based systems: -none /sys sysfs defaults 0 0 +none /sys sysfs nodev,noexec,nosuid 0 0 -Or by hand on the command line: +If sysfs is not automatically mounted, you can always do it manually with: # mount -t sysfs sysfs /sys diff --git a/Documentation/dvb/get_dvb_firmware b/Documentation/dvb/get_dvb_firmware index 511dd4d..48d25ea 100644..100755 --- a/Documentation/dvb/get_dvb_firmware +++ b/Documentation/dvb/get_dvb_firmware @@ -27,7 +27,8 @@ use IO::Handle; "or51211", "or51132_qam", "or51132_vsb", "bluebird", "opera1", "cx231xx", "cx18", "cx23885", "pvrusb2", "mpc718", "af9015", "ngene", "az6027", "lme2510_lg", "lme2510c_s7395", - "lme2510c_s7395_old"); + "lme2510c_s7395_old", "drxk", "drxk_terratec_h5", "tda10071", + "it9135" ); # Check args syntax() if (scalar(@ARGV) != 1); @@ -575,19 +576,10 @@ sub ngene { } sub az6027{ - my $file = "AZ6027_Linux_Driver.tar.gz"; - my $url = "http://linux.terratec.de/files/$file"; my $firmware = "dvb-usb-az6027-03.fw"; + my $url = "http://linux.terratec.de/files/TERRATEC_S7/$firmware"; - wgetfile($file, $url); - - #untar - if( system("tar xzvf $file $firmware")){ - die "failed to untar firmware"; - } - if( system("rm $file")){ - die ("unable to remove unnecessary files"); - } + wgetfile($firmware, $url); $firmware; } @@ -634,6 +626,72 @@ sub lme2510c_s7395_old { $outfile; } +sub drxk { + my $url = "http://l4m-daten.de/files/"; + my $zipfile = "DDTuner.zip"; + my $hash = "f5a37b9a20a3534997997c0b1382a3e5"; + my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1); + my $drvfile = "DDTuner.sys"; + my $fwfile = "drxk_a3.mc"; + + checkstandard(); + + wgetfile($zipfile, $url . $zipfile); + verify($zipfile, $hash); + unzip($zipfile, $tmpdir); + extract("$tmpdir/$drvfile", 0x14dd8, 15634, "$fwfile"); + + "$fwfile" +} + +sub drxk_terratec_h5 { + my $url = "http://www.linuxtv.org/downloads/firmware/"; + my $hash = "19000dada8e2741162ccc50cc91fa7f1"; + my $fwfile = "dvb-usb-terratec-h5-drxk.fw"; + + checkstandard(); + + wgetfile($fwfile, $url . $fwfile); + verify($fwfile, $hash); + + "$fwfile" +} + +sub it9135 { + my $url = "http://kworld.server261.com/kworld/CD/ITE_TiVme/V1.00/"; + my $zipfile = "Driver_V10.323.1.0412.100412.zip"; + my $hash = "79b597dc648698ed6820845c0c9d0d37"; + my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 0); + my $drvfile = "Driver_V10.323.1.0412.100412/Data/x86/IT9135BDA.sys"; + my $fwfile = "dvb-usb-it9137-01.fw"; + + checkstandard(); + + wgetfile($zipfile, $url . $zipfile); + verify($zipfile, $hash); + unzip($zipfile, $tmpdir); + extract("$tmpdir/$drvfile", 69632, 5731, "$fwfile"); + + "$fwfile" +} + +sub tda10071 { + my $sourcefile = "PCTV_460e_reference.zip"; + my $url = "ftp://ftp.pctvsystems.com/TV/driver/PCTV%2070e%2080e%20100e%20320e%20330e%20800e/"; + my $hash = "4403de903bf2593464c8d74bbc200a57"; + my $fwfile = "dvb-fe-tda10071.fw"; + my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1); + + checkstandard(); + + wgetfile($sourcefile, $url . $sourcefile); + verify($sourcefile, $hash); + unzip($sourcefile, $tmpdir); + extract("$tmpdir/PCTV\ 70e\ 80e\ 100e\ 320e\ 330e\ 800e/32\ bit/emOEM.sys", 0x67d38, 40504, $fwfile); + + "$fwfile"; +} + # --------------------------------------------------------------- # Utilities diff --git a/Documentation/dvb/it9137.txt b/Documentation/dvb/it9137.txt new file mode 100644 index 0000000..9e6726e --- /dev/null +++ b/Documentation/dvb/it9137.txt @@ -0,0 +1,9 @@ +To extract firmware for Kworld UB499-2T (id 1b80:e409) you need to copy the +following file(s) to this directory. + +IT9135BDA.sys Dated Mon 22 Mar 2010 02:20:08 GMT + +extract using dd +dd if=IT9135BDA.sys ibs=1 skip=69632 count=5731 of=dvb-usb-it9137-01.fw + +copy to default firmware location. diff --git a/Documentation/email-clients.txt b/Documentation/email-clients.txt index a0b58e2..860c29a 100644 --- a/Documentation/email-clients.txt +++ b/Documentation/email-clients.txt @@ -199,18 +199,16 @@ to coerce it into behaving. To beat some sense out of the internal editor, do this: -- Under account settings, composition and addressing, uncheck "Compose - messages in HTML format". - - Edit your Thunderbird config settings so that it won't use format=flowed. Go to "edit->preferences->advanced->config editor" to bring up the thunderbird's registry editor, and set "mailnews.send_plaintext_flowed" to "false". -- Enable "preformat" mode: Shft-click on the Write icon to bring up the HTML - composer, select "Preformat" from the drop-down box just under the subject - line, then close the message without saving. (This setting also applies to - the text composer, but the only control for it is in the HTML composer.) +- Disable HTML Format: Set "mail.identity.id1.compose_html" to "false". + +- Enable "preformat" mode: Set "editor.quotesPreformatted" to "true". + +- Enable UTF8: Set "prefs.converted-to-utf8" to "true". - Install the "toggle wordwrap" extension. Download the file from: https://addons.mozilla.org/thunderbird/addon/2351/ diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt index 7be15e4..ba4be8b 100644 --- a/Documentation/fault-injection/fault-injection.txt +++ b/Documentation/fault-injection/fault-injection.txt @@ -21,6 +21,11 @@ o fail_make_request /sys/block/<device>/make-it-fail or /sys/block/<device>/<partition>/make-it-fail. (generic_make_request()) +o fail_mmc_request + + injects MMC data errors on devices permitted by setting + debugfs entries under /sys/kernel/debug/mmc0/fail_mmc_request + Configure fault-injection capabilities behavior ----------------------------------------------- @@ -115,7 +120,8 @@ use the boot option: failslab= fail_page_alloc= - fail_make_request=<interval>,<probability>,<space>,<times> + fail_make_request= + mmc_core.fail_request=<interval>,<probability>,<space>,<times> How to add new fault injection capability ----------------------------------------- @@ -143,8 +149,7 @@ o provide a way to configure fault attributes failslab, fail_page_alloc, and fail_make_request use this way. Helper functions: - init_fault_attr_dentries(entries, attr, name); - void cleanup_fault_attr_dentries(entries); + fault_create_debugfs_attr(name, parent, attr); - module parameters diff --git a/Documentation/fb/udlfb.txt b/Documentation/fb/udlfb.txt index 7fdde2a..57d2f29 100644 --- a/Documentation/fb/udlfb.txt +++ b/Documentation/fb/udlfb.txt @@ -87,23 +87,38 @@ Special configuration for udlfb is usually unnecessary. There are a few options, however. From the command line, pass options to modprobe -modprobe udlfb defio=1 console=1 +modprobe udlfb fb_defio=0 console=1 shadow=1 -Or for permanent option, create file like /etc/modprobe.d/options with text -options udlfb defio=1 console=1 +Or modify options on the fly at /sys/module/udlfb/parameters directory via +sudo nano fb_defio +change the parameter in place, and save the file. -Accepted options: +Unplug/replug USB device to apply with new settings + +Or for permanent option, create file like /etc/modprobe.d/udlfb.conf with text +options udlfb fb_defio=0 console=1 shadow=1 + +Accepted boolean options: fb_defio Make use of the fb_defio (CONFIG_FB_DEFERRED_IO) kernel module to track changed areas of the framebuffer by page faults. - Standard fbdev applications that use mmap but that do not - report damage, may be able to work with this enabled. - Disabled by default because of overhead and other issues. - -console Allow fbcon to attach to udlfb provided framebuffers. This - is disabled by default because fbcon will aggressively consume - the first framebuffer it finds, which isn't usually what the - user wants in the case of USB displays. + Standard fbdev applications that use mmap but that do not + report damage, should be able to work with this enabled. + Disable when running with X server that supports reporting + changed regions via ioctl, as this method is simpler, + more stable, and higher performance. + default: fb_defio=1 + +console Allow fbcon to attach to udlfb provided framebuffers. + Can be disabled if fbcon and other clients + (e.g. X with --shared-vt) are in conflict. + default: console=1 + +shadow Allocate a 2nd framebuffer to shadow what's currently across + the USB bus in device memory. If any pixels are unchanged, + do not transmit. Spends host memory to save USB transfers. + Enabled by default. Only disable on very low memory systems. + default: shadow=1 Sysfs Attributes ================ diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 6ff5af4..47c4ec2 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -125,41 +125,6 @@ Who: Pavel Machek <pavel@ucw.cz> --------------------------- -What: sys_sysctl -When: September 2010 -Option: CONFIG_SYSCTL_SYSCALL -Why: The same information is available in a more convenient from - /proc/sys, and none of the sysctl variables appear to be - important performance wise. - - Binary sysctls are a long standing source of subtle kernel - bugs and security issues. - - When I looked several months ago all I could find after - searching several distributions were 5 user space programs and - glibc (which falls back to /proc/sys) using this syscall. - - The man page for sysctl(2) documents it as unusable for user - space programs. - - sysctl(2) is not generally ABI compatible to a 32bit user - space application on a 64bit and a 32bit kernel. - - For the last several months the policy has been no new binary - sysctls and no one has put forward an argument to use them. - - Binary sysctls issues seem to keep happening appearing so - properly deprecating them (with a warning to user space) and a - 2 year grace warning period will mean eventually we can kill - them and end the pain. - - In the mean time individual binary sysctls can be dealt with - in a piecewise fashion. - -Who: Eric Biederman <ebiederm@xmission.com> - ---------------------------- - What: /proc/<pid>/oom_adj When: August 2012 Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's @@ -176,7 +141,7 @@ Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's A much more powerful interface, /proc/<pid>/oom_score_adj, was introduced with the oom killer rewrite that allows users to increase or - decrease the badness() score linearly. This interface will replace + decrease the badness score linearly. This interface will replace /proc/<pid>/oom_adj. A warning will be emitted to the kernel log if an application uses this @@ -185,20 +150,6 @@ Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's --------------------------- -What: CS5535/CS5536 obsolete GPIO driver -When: June 2011 -Files: drivers/staging/cs5535_gpio/* -Check: drivers/staging/cs5535_gpio/cs5535_gpio.c -Why: A newer driver replaces this; it is drivers/gpio/cs5535-gpio.c, and - integrates with the Linux GPIO subsystem. The old driver has been - moved to staging, and will be removed altogether around 2.6.40. - Please test the new driver, and ensure that the functionality you - need and any bugfixes from the old driver are available in the new - one. -Who: Andres Salomon <dilinger@queued.net> - --------------------------- - What: remove EXPORT_SYMBOL(kernel_thread) When: August 2006 Files: arch/*/kernel/*_ksyms.c @@ -286,7 +237,7 @@ When: The schedule was July 2008, but it was decided that we are going to keep t Why: The support code for the old firmware hurts code readability/maintainability and slightly hurts runtime performance. Bugfixes for the old firmware are not provided by Broadcom anymore. -Who: Michael Buesch <mb@bu3sch.de> +Who: Michael Buesch <m@bues.ch> --------------------------- @@ -302,15 +253,6 @@ Who: Ravikiran Thirumalai <kiran@scalex86.org> --------------------------- -What: CONFIG_THERMAL_HWMON -When: January 2009 -Why: This option was introduced just to allow older lm-sensors userspace - to keep working over the upgrade to 2.6.26. At the scheduled time of - removal fixed lm-sensors (2.x or 3.x) should be readily available. -Who: Rene Herman <rene.herman@gmail.com> - ---------------------------- - What: Code that is now under CONFIG_WIRELESS_EXT_SYSFS (in net/core/net-sysfs.c) When: After the only user (hal) has seen a release with the patches @@ -422,7 +364,7 @@ Who: Avi Kivity <avi@redhat.com> ---------------------------- What: iwlwifi 50XX module parameters -When: 2.6.40 +When: 3.0 Why: The "..50" modules parameters were used to configure 5000 series and up devices; different set of module parameters also available for 4965 with same functionalities. Consolidate both set into single place @@ -433,7 +375,7 @@ Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> ---------------------------- What: iwl4965 alias support -When: 2.6.40 +When: 3.0 Why: Internal alias support has been present in module-init-tools for some time, the MODULE_ALIAS("iwl4965") boilerplate aliases can be removed with no impact. @@ -466,15 +408,8 @@ Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> ---------------------------- -What: DMA_xxBIT_MASK macros -When: Jun 2011 -Why: DMA_xxBIT_MASK macros were replaced with DMA_BIT_MASK() macros. -Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> - ----------------------------- - What: iwlwifi disable_hw_scan module parameters -When: 2.6.40 +When: 3.0 Why: Hareware scan is the prefer method for iwlwifi devices for scanning operation. Remove software scan support for all the iwlwifi devices. @@ -483,26 +418,6 @@ Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> ---------------------------- -What: access to nfsd auth cache through sys_nfsservctl or '.' files - in the 'nfsd' filesystem. -When: 2.6.40 -Why: This is a legacy interface which have been replaced by a more - dynamic cache. Continuing to maintain this interface is an - unnecessary burden. -Who: NeilBrown <neilb@suse.de> - ----------------------------- - -What: cancel_rearming_delayed_work[queue]() -When: 2.6.39 - -Why: The functions have been superceded by cancel_delayed_work_sync() - quite some time ago. The conversion is trivial and there is no - in-kernel user left. -Who: Tejun Heo <tj@kernel.org> - ----------------------------- - What: Legacy, non-standard chassis intrusion detection interface. When: June 2011 Why: The adm9240, w83792d and w83793 hardware monitoring drivers have @@ -520,22 +435,6 @@ Files: net/netfilter/xt_connlimit.c ---------------------------- -What: noswapaccount kernel command line parameter -When: 2.6.40 -Why: The original implementation of memsw feature enabled by - CONFIG_CGROUP_MEM_RES_CTLR_SWAP could be disabled by the noswapaccount - kernel parameter (introduced in 2.6.29-rc1). Later on, this decision - turned out to be not ideal because we cannot have the feature compiled - in and disabled by default and let only interested to enable it - (e.g. general distribution kernels might need it). Therefore we have - added swapaccount[=0|1] parameter (introduced in 2.6.37) which provides - the both possibilities. If we remove noswapaccount we will have - less command line parameters with the same functionality and we - can also cleanup the parameter handling a bit (). -Who: Michal Hocko <mhocko@suse.cz> - ----------------------------- - What: ipt_addrtype match include file When: 2012 Why: superseded by xt_addrtype @@ -553,26 +452,38 @@ Who: Jean Delvare <khali@linux-fr.org> ---------------------------- -What: Support for UVCIOC_CTRL_ADD in the uvcvideo driver -When: 2.6.42 -Why: The information passed to the driver by this ioctl is now queried - dynamically from the device. -Who: Laurent Pinchart <laurent.pinchart@ideasonboard.com> +What: Support for driver specific ioctls in the pwc driver (everything + defined in media/pwc-ioctl.h) +When: 3.3 +Why: This stems from the v4l1 era, with v4l2 everything can be done with + standardized v4l2 API calls +Who: Hans de Goede <hdegoede@redhat.com> ---------------------------- -What: Support for UVCIOC_CTRL_MAP_OLD in the uvcvideo driver -When: 2.6.42 -Why: Used only by applications compiled against older driver versions. - Superseded by UVCIOC_CTRL_MAP which supports V4L2 menu controls. -Who: Laurent Pinchart <laurent.pinchart@ideasonboard.com> +What: Driver specific sysfs API in the pwc driver +When: 3.3 +Why: Setting pan/tilt should be done with v4l2 controls, like with other + cams. The button is available as a standard input device +Who: Hans de Goede <hdegoede@redhat.com> + +---------------------------- + +What: Driver specific use of pixfmt.priv in the pwc driver +When: 3.3 +Why: The .priv field never was intended for this, setting a framerate is + support using the standardized S_PARM ioctl +Who: Hans de Goede <hdegoede@redhat.com> ---------------------------- -What: Support for UVCIOC_CTRL_GET and UVCIOC_CTRL_SET in the uvcvideo driver -When: 2.6.42 -Why: Superseded by the UVCIOC_CTRL_QUERY ioctl. -Who: Laurent Pinchart <laurent.pinchart@ideasonboard.com> +What: Software emulation of arbritary resolutions in the pwc driver +When: 3.3 +Why: The pwc driver claims to support any resolution between 160x120 + and 640x480, but emulates this by simply drawing a black border + around the image. Userspace can draw its own black border if it + really wants one. +Who: Hans de Goede <hdegoede@redhat.com> ---------------------------- @@ -597,3 +508,38 @@ Why: Just opening a V4L device should not change the state of the hardware Who: Hans Verkuil <hans.verkuil@cisco.com> ---------------------------- + +What: g_file_storage driver +When: 3.8 +Why: This driver has been superseded by g_mass_storage. +Who: Alan Stern <stern@rowland.harvard.edu> + +---------------------------- + +What: threeg and interface sysfs files in /sys/devices/platform/acer-wmi +When: 2012 +Why: In 3.0, we can now autodetect internal 3G device and already have + the threeg rfkill device. So, we plan to remove threeg sysfs support + for it's no longer necessary. + + We also plan to remove interface sysfs file that exposed which ACPI-WMI + interface that was used by acer-wmi driver. It will replaced by + information log when acer-wmi initial. +Who: Lee, Chun-Yi <jlee@novell.com> + +---------------------------- + +What: The XFS nodelaylog mount option +When: 3.3 +Why: The delaylog mode that has been the default since 2.6.39 has proven + stable, and the old code is in the way of additional improvements in + the log code. +Who: Christoph Hellwig <hch@lst.de> + +---------------------------- + +What: iwlagn alias support +When: 3.5 +Why: The iwlagn module has been renamed iwlwifi. The alias will be around + for backward compatibility for several cycles and then dropped. +Who: Don Fry <donald.h.fry@intel.com> diff --git a/Documentation/filesystems/9p.txt b/Documentation/filesystems/9p.txt index 13de64c..2c03214 100644 --- a/Documentation/filesystems/9p.txt +++ b/Documentation/filesystems/9p.txt @@ -92,7 +92,7 @@ OPTIONS wfdno=n the file descriptor for writing with trans=fd - maxdata=n the number of bytes to use for 9p packet payload (msize) + msize=n the number of bytes to use for 9p packet payload port=n port to connect to on the remote server diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 57d827d..d819ba1 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -29,6 +29,7 @@ d_hash no no no maybe d_compare: yes no no maybe d_delete: no yes no no d_release: no no yes no +d_prune: no yes no no d_iput: no no yes no d_dname: no no no no d_automount: no no yes no @@ -52,7 +53,7 @@ ata *); void (*put_link) (struct dentry *, struct nameidata *, void *); void (*truncate) (struct inode *); int (*permission) (struct inode *, int, unsigned int); - int (*check_acl)(struct inode *, int, unsigned int); + int (*get_acl)(struct inode *, int); int (*setattr) (struct dentry *, struct iattr *); int (*getattr) (struct vfsmount *, struct dentry *, struct kstat *); int (*setxattr) (struct dentry *, const char *,const void *,size_t,int); @@ -80,7 +81,7 @@ put_link: no truncate: yes (see below) setattr: yes permission: no (may not block if called in rcu-walk mode) -check_acl: no +get_acl: no getattr: no setxattr: yes getxattr: no @@ -338,21 +339,21 @@ fl_release_private: maybe no ----------------------- lock_manager_operations --------------------------- prototypes: - int (*fl_compare_owner)(struct file_lock *, struct file_lock *); - void (*fl_notify)(struct file_lock *); /* unblock callback */ - int (*fl_grant)(struct file_lock *, struct file_lock *, int); - void (*fl_release_private)(struct file_lock *); - void (*fl_break)(struct file_lock *); /* break_lease callback */ - int (*fl_change)(struct file_lock **, int); + int (*lm_compare_owner)(struct file_lock *, struct file_lock *); + void (*lm_notify)(struct file_lock *); /* unblock callback */ + int (*lm_grant)(struct file_lock *, struct file_lock *, int); + void (*lm_release_private)(struct file_lock *); + void (*lm_break)(struct file_lock *); /* break_lease callback */ + int (*lm_change)(struct file_lock **, int); locking rules: file_lock_lock may block -fl_compare_owner: yes no -fl_notify: yes no -fl_grant: no no -fl_release_private: maybe no -fl_break: yes no -fl_change yes no +lm_compare_owner: yes no +lm_notify: yes no +lm_grant: no no +lm_release_private: maybe no +lm_break: yes no +lm_change yes no --------------------------- buffer_head ----------------------------------- prototypes: @@ -412,7 +413,7 @@ prototypes: int (*open) (struct inode *, struct file *); int (*flush) (struct file *); int (*release) (struct inode *, struct file *); - int (*fsync) (struct file *, int datasync); + int (*fsync) (struct file *, loff_t start, loff_t end, int datasync); int (*aio_fsync) (struct kiocb *, int datasync); int (*fasync) (int, struct file *, int); int (*lock) (struct file *, int, struct file_lock *); @@ -438,9 +439,7 @@ prototypes: locking rules: All may block except for ->setlease. - No VFS locks held on entry except for ->fsync and ->setlease. - -->fsync() has i_mutex on inode. + No VFS locks held on entry except for ->setlease. ->setlease has the file_list_lock held and must not sleep. diff --git a/Documentation/filesystems/befs.txt b/Documentation/filesystems/befs.txt index 6e49c36..da45e6c 100644 --- a/Documentation/filesystems/befs.txt +++ b/Documentation/filesystems/befs.txt @@ -27,7 +27,7 @@ His original code can still be found at: Does anyone know of a more current email address for Makoto? He doesn't respond to the address given above... -Current maintainer: Sergey S. Kostyliov <rathamahata@php4.ru> +This filesystem doesn't have a maintainer. WHAT IS THIS DRIVER? ================== diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.txt index 64087c3..7671352 100644 --- a/Documentation/filesystems/btrfs.txt +++ b/Documentation/filesystems/btrfs.txt @@ -63,8 +63,8 @@ IRC network. Userspace tools for creating and manipulating Btrfs file systems are available from the git repository at the following location: - http://git.kernel.org/?p=linux/kernel/git/mason/btrfs-progs-unstable.git - git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs-unstable.git + http://git.kernel.org/?p=linux/kernel/git/mason/btrfs-progs.git + git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git These include the following tools: diff --git a/Documentation/filesystems/caching/object.txt b/Documentation/filesystems/caching/object.txt index e8b0a35..5831334 100644 --- a/Documentation/filesystems/caching/object.txt +++ b/Documentation/filesystems/caching/object.txt @@ -127,9 +127,9 @@ fscache_enqueue_object()). PROVISION OF CPU TIME --------------------- -The work to be done by the various states is given CPU time by the threads of -the slow work facility (see Documentation/slow-work.txt). This is used in -preference to the workqueue facility because: +The work to be done by the various states was given CPU time by the threads of +the slow work facility. This was used in preference to the workqueue facility +because: (1) Threads may be completely occupied for very long periods of time by a particular work item. These state actions may be doing sequences of diff --git a/Documentation/filesystems/debugfs.txt b/Documentation/filesystems/debugfs.txt index ed52af6..742cc06 100644 --- a/Documentation/filesystems/debugfs.txt +++ b/Documentation/filesystems/debugfs.txt @@ -73,8 +73,8 @@ the following functions can be used instead: struct dentry *parent, u16 *value); struct dentry *debugfs_create_x32(const char *name, mode_t mode, struct dentry *parent, u32 *value); - -Note that there is no debugfs_create_x64(). + struct dentry *debugfs_create_x64(const char *name, mode_t mode, + struct dentry *parent, u64 *value); These functions are useful as long as the developer knows the size of the value to be exported. Some types can have different widths on different diff --git a/Documentation/filesystems/ext3.txt b/Documentation/filesystems/ext3.txt index 272f80d5..b100adc 100644 --- a/Documentation/filesystems/ext3.txt +++ b/Documentation/filesystems/ext3.txt @@ -73,14 +73,6 @@ nobarrier (*) This also requires an IO stack which can support also be used to enable or disable barriers, for consistency with other ext3 mount options. -orlov (*) This enables the new Orlov block allocator. It is - enabled by default. - -oldalloc This disables the Orlov block allocator and enables - the old block allocator. Orlov should have better - performance - we'd like to get some feedback if it's - the contrary for you. - user_xattr Enables Extended User Attributes. Additionally, you need to have extended attribute support enabled in the kernel configuration (CONFIG_EXT3_FS_XATTR). See the @@ -147,15 +139,6 @@ grpjquota=<file> during journal replay. They replace the above package for more details (http://sourceforge.net/projects/linuxquota). -bh (*) ext3 associates buffer heads to data pages to -nobh (a) cache disk block mapping information - (b) link pages into transaction to provide - ordering guarantees. - "bh" option forces use of buffer heads. - "nobh" option tries to avoid associating buffer - heads (supported only for "writeback" mode). - - Specification ============= Ext3 shares all disk implementation with the ext2 filesystem, and adds @@ -227,5 +210,5 @@ kernel source: <file:fs/ext3/> programs: http://e2fsprogs.sourceforge.net/ http://ext2resize.sourceforge.net -useful links: http://www.ibm.com/developerworks/library/l-fs7.html - http://www.ibm.com/developerworks/library/l-fs8.html +useful links: http://www.ibm.com/developerworks/library/l-fs7/index.html + http://www.ibm.com/developerworks/library/l-fs8/index.html diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt index 3ae9bc9..4917cf2 100644 --- a/Documentation/filesystems/ext4.txt +++ b/Documentation/filesystems/ext4.txt @@ -68,12 +68,12 @@ Note: More extensive information for getting started with ext4 can be '-o barriers=[0|1]' mount option for both ext3 and ext4 filesystems for a fair comparison. When tuning ext3 for best benchmark numbers, it is often worthwhile to try changing the data journaling mode; '-o - data=writeback,nobh' can be faster for some workloads. (Note - however that running mounted with data=writeback can potentially - leave stale data exposed in recently written files in case of an - unclean shutdown, which could be a security exposure in some - situations.) Configuring the filesystem with a large journal can - also be helpful for metadata-intensive workloads. + data=writeback' can be faster for some workloads. (Note however that + running mounted with data=writeback can potentially leave stale data + exposed in recently written files in case of an unclean shutdown, + which could be a security exposure in some situations.) Configuring + the filesystem with a large journal can also be helpful for + metadata-intensive workloads. 2. Features =========== @@ -160,7 +160,9 @@ noload if the filesystem was not unmounted cleanly, lead to any number of problems. data=journal All data are committed into the journal prior to being - written into the main file system. + written into the main file system. Enabling + this mode will disable delayed allocation and + O_DIRECT support. data=ordered (*) All data are forced directly out to the main file system prior to its metadata being committed to the @@ -201,30 +203,19 @@ inode_readahead_blks=n This tuning parameter controls the maximum table readahead algorithm will pre-read into the buffer cache. The default value is 32 blocks. -orlov (*) This enables the new Orlov block allocator. It is - enabled by default. - -oldalloc This disables the Orlov block allocator and enables - the old block allocator. Orlov should have better - performance - we'd like to get some feedback if it's - the contrary for you. - -user_xattr Enables Extended User Attributes. Additionally, you - need to have extended attribute support enabled in the - kernel configuration (CONFIG_EXT4_FS_XATTR). See the - attr(5) manual page and http://acl.bestbits.at/ to - learn more about extended attributes. - -nouser_xattr Disables Extended User Attributes. - -acl Enables POSIX Access Control Lists support. - Additionally, you need to have ACL support enabled in - the kernel configuration (CONFIG_EXT4_FS_POSIX_ACL). - See the acl(5) manual page and http://acl.bestbits.at/ - for more information. +nouser_xattr Disables Extended User Attributes. If you have extended + attribute support enabled in the kernel configuration + (CONFIG_EXT4_FS_XATTR), extended attribute support + is enabled by default on mount. See the attr(5) manual + page and http://acl.bestbits.at/ for more information + about extended attributes. noacl This option disables POSIX Access Control List - support. + support. If ACL support is enabled in the kernel + configuration (CONFIG_EXT4_FS_POSIX_ACL), ACL is + enabled by default on mount. See the acl(5) manual + page and http://acl.bestbits.at/ for more information + about acl. bsddf (*) Make 'df' act like BSD. minixdf Make 'df' act like Minix. @@ -272,14 +263,6 @@ grpjquota=<file> during journal replay. They replace the above package for more details (http://sourceforge.net/projects/linuxquota). -bh (*) ext4 associates buffer heads to data pages to -nobh (a) cache disk block mapping information - (b) link pages into transaction to provide - ordering guarantees. - "bh" option forces use of buffer heads. - "nobh" option tries to avoid associating buffer - heads (supported only for "writeback" mode). - stripe=n Number of filesystem blocks that mballoc will try to use for allocation size and alignment. For RAID5/6 systems this should be the number of data @@ -393,8 +376,7 @@ dioread_nolock locking. If the dioread_nolock option is specified write and convert the extent to initialized after IO completes. This approach allows ext4 code to avoid using inode mutex, which improves scalability on high - speed storages. However this does not work with nobh - option and the mount will fail. Nor does it work with + speed storages. However this does not work with data journaling and dioread_nolock option will be ignored with kernel warning. Note that dioread_nolock code path is only used for extent-based files. @@ -428,8 +410,8 @@ written to the journal first, and then to its final location. In the event of a crash, the journal can be replayed, bringing both data and metadata into a consistent state. This mode is the slowest except when data needs to be read from and written to disk at the same time where it -outperforms all others modes. Currently ext4 does not have delayed -allocation support if this data journalling mode is selected. +outperforms all others modes. Enabling this mode will disable delayed +allocation and O_DIRECT support. /proc entries ============= diff --git a/Documentation/filesystems/hfs.txt b/Documentation/filesystems/hfs.txt index bd0fa77..d096df6 100644 --- a/Documentation/filesystems/hfs.txt +++ b/Documentation/filesystems/hfs.txt @@ -1,3 +1,4 @@ +Note: This filesystem doesn't have a maintainer. Macintosh HFS Filesystem for Linux ================================== @@ -76,8 +77,6 @@ hformat that can be used to create HFS filesystem. See Credits ======= -The HFS drivers was written by Paul H. Hargrovea (hargrove@sccm.Stanford.EDU) -and is now maintained by Roman Zippel (roman@ardistech.com) at Ardis -Technologies. -Roman rewrote large parts of the code and brought in btree routines derived -from Brad Boyer's hfsplus driver (also maintained by Roman now). +The HFS drivers was written by Paul H. Hargrovea (hargrove@sccm.Stanford.EDU). +Roman Zippel (roman@ardistech.com) rewrote large parts of the code and brought +in btree routines derived from Brad Boyer's hfsplus driver. diff --git a/Documentation/filesystems/inotify.txt b/Documentation/filesystems/inotify.txt index 59a919f..cfd0271 100644 --- a/Documentation/filesystems/inotify.txt +++ b/Documentation/filesystems/inotify.txt @@ -194,7 +194,8 @@ associated with the inotify_handle, and on which events are queued. Each watch is associated with an inotify_watch structure. Watches are chained off of each associated inotify_handle and each associated inode. -See fs/inotify.c and fs/inotify_user.c for the locking and lifetime rules. +See fs/notify/inotify/inotify_fsnotify.c and fs/notify/inotify/inotify_user.c +for the locking and lifetime rules. (vi) Rationale diff --git a/Documentation/filesystems/locks.txt b/Documentation/filesystems/locks.txt index fab857a..2cf8108 100644 --- a/Documentation/filesystems/locks.txt +++ b/Documentation/filesystems/locks.txt @@ -53,11 +53,12 @@ fcntl(), with all the problems that implies. 1.3 Mandatory Locking As A Mount Option --------------------------------------- -Mandatory locking, as described in 'Documentation/filesystems/mandatory.txt' -was prior to this release a general configuration option that was valid for -all mounted filesystems. This had a number of inherent dangers, not the -least of which was the ability to freeze an NFS server by asking it to read -a file for which a mandatory lock existed. +Mandatory locking, as described in +'Documentation/filesystems/mandatory-locking.txt' was prior to this release a +general configuration option that was valid for all mounted filesystems. This +had a number of inherent dangers, not the least of which was the ability to +freeze an NFS server by asking it to read a file for which a mandatory lock +existed. From this release of the kernel, mandatory locking can be turned on and off on a per-filesystem basis, using the mount options 'mand' and 'nomand'. diff --git a/Documentation/filesystems/nfs/Exporting b/Documentation/filesystems/nfs/Exporting index 87019d2..09994c2 100644 --- a/Documentation/filesystems/nfs/Exporting +++ b/Documentation/filesystems/nfs/Exporting @@ -92,7 +92,14 @@ For a filesystem to be exportable it must: 1/ provide the filehandle fragment routines described below. 2/ make sure that d_splice_alias is used rather than d_add when ->lookup finds an inode for a given parent and name. - Typically the ->lookup routine will end with a: + + If inode is NULL, d_splice_alias(inode, dentry) is eqivalent to + + d_add(dentry, inode), NULL + + Similarly, d_splice_alias(ERR_PTR(err), dentry) = ERR_PTR(err) + + Typically the ->lookup routine will simply end with a: return d_splice_alias(inode, dentry); } diff --git a/Documentation/filesystems/nfs/idmapper.txt b/Documentation/filesystems/nfs/idmapper.txt index 9c8fd61..120fd3c 100644 --- a/Documentation/filesystems/nfs/idmapper.txt +++ b/Documentation/filesystems/nfs/idmapper.txt @@ -47,7 +47,7 @@ request-key will find the first matching line and corresponding program. In this case, /some/other/program will handle all uid lookups and /usr/sbin/nfs.idmap will handle gid, user, and group lookups. -See <file:Documentation/security/keys-request-keys.txt> for more information +See <file:Documentation/security/keys-request-key.txt> for more information about the request-key function. diff --git a/Documentation/filesystems/nfs/nfs41-server.txt b/Documentation/filesystems/nfs/nfs41-server.txt index 0488491..092fad9 100644 --- a/Documentation/filesystems/nfs/nfs41-server.txt +++ b/Documentation/filesystems/nfs/nfs41-server.txt @@ -39,27 +39,17 @@ interoperability problems with future clients. Known issues: from a linux client are possible, but we aren't really conformant with the spec (for example, we don't use kerberos on the backchannel correctly). - - no trunking support: no clients currently take advantage of - trunking, but this is a mandatory feature, and its use is - recommended to clients in a number of places. (E.g. to ensure - timely renewal in case an existing connection's retry timeouts - have gotten too long; see section 8.3 of the RFC.) - Therefore, lack of this feature may cause future clients to - fail. - Incomplete backchannel support: incomplete backchannel gss support and no support for BACKCHANNEL_CTL mean that callbacks (hence delegations and layouts) may not be available and clients confused by the incomplete implementation may fail. - - Server reboot recovery is unsupported; if the server reboots, - clients may fail. - We do not support SSV, which provides security for shared client-server state (thus preventing unauthorized tampering with locks and opens, for example). It is mandatory for servers to support this, though no clients use it yet. - Mandatory operations which we do not support, such as - DESTROY_CLIENTID, FREE_STATEID, SECINFO_NO_NAME, and - TEST_STATEID, are not currently used by clients, but will be + DESTROY_CLIENTID, are not currently used by clients, but will be (and the spec recommends their uses in common cases), and clients should not be expected to know how to recover from the case where they are not supported. This will eventually cause @@ -69,8 +59,9 @@ In addition, some limitations are inherited from the current NFSv4 implementation: - Incomplete delegation enforcement: if a file is renamed or - unlinked, a client holding a delegation may continue to - indefinitely allow opens of the file under the old name. + unlinked by a local process, a client holding a delegation may + continue to indefinitely allow opens of the file under the old + name. The table below, taken from the NFSv4.1 document, lists the operations that are mandatory to implement (REQ), optional @@ -99,7 +90,7 @@ Operations +----------------------+------------+--------------+----------------+ | ACCESS | REQ | | Section 18.1 | NS | BACKCHANNEL_CTL | REQ | | Section 18.33 | -NS | BIND_CONN_TO_SESSION | REQ | | Section 18.34 | +I | BIND_CONN_TO_SESSION | REQ | | Section 18.34 | | CLOSE | REQ | | Section 18.2 | | COMMIT | REQ | | Section 18.3 | | CREATE | REQ | | Section 18.4 | @@ -111,7 +102,7 @@ NS*| DELEGPURGE | OPT | FDELG (REQ) | Section 18.5 | NS | DESTROY_CLIENTID | REQ | | Section 18.50 | I | DESTROY_SESSION | REQ | | Section 18.37 | I | EXCHANGE_ID | REQ | | Section 18.35 | -NS | FREE_STATEID | REQ | | Section 18.38 | +I | FREE_STATEID | REQ | | Section 18.38 | | GETATTR | REQ | | Section 18.7 | P | GETDEVICEINFO | OPT | pNFS (REQ) | Section 18.40 | P | GETDEVICELIST | OPT | pNFS (OPT) | Section 18.41 | @@ -145,14 +136,14 @@ NS*| OPENATTR | OPT | | Section 18.17 | | RESTOREFH | REQ | | Section 18.27 | | SAVEFH | REQ | | Section 18.28 | | SECINFO | REQ | | Section 18.29 | -NS | SECINFO_NO_NAME | REC | pNFS files | Section 18.45, | +I | SECINFO_NO_NAME | REC | pNFS files | Section 18.45, | | | | layout (REQ) | Section 13.12 | I | SEQUENCE | REQ | | Section 18.46 | | SETATTR | REQ | | Section 18.30 | | SETCLIENTID | MNI | | N/A | | SETCLIENTID_CONFIRM | MNI | | N/A | NS | SET_SSV | REQ | | Section 18.47 | -NS | TEST_STATEID | REQ | | Section 18.48 | +I | TEST_STATEID | REQ | | Section 18.48 | | VERIFY | REQ | | Section 18.31 | NS*| WANT_DELEGATION | OPT | FDELG (OPT) | Section 18.49 | | WRITE | REQ | | Section 18.32 | @@ -206,12 +197,6 @@ CREATE_SESSION: SEQUENCE: * no support for dynamic slot table renegotiation (optional) -nfsv4.1 COMPOUND rules: -The following cases aren't supported yet: -* Enforcing of NFS4ERR_NOT_ONLY_OP for: BIND_CONN_TO_SESSION, CREATE_SESSION, - DESTROY_CLIENTID, DESTROY_SESSION, EXCHANGE_ID. -* DESTROY_SESSION MUST be the final operation in the COMPOUND request. - Nonstandard compound limitations: * No support for a sessions fore channel RPC compound that requires both a ca_maxrequestsize request and a ca_maxresponsesize reply, so we may @@ -219,3 +204,5 @@ Nonstandard compound limitations: negotiation. * No more than one IO operation (read, write, readdir) allowed per compound. + +See also http://wiki.linux-nfs.org/wiki/index.php/Server_4.0_and_4.1_issues. diff --git a/Documentation/filesystems/nfs/nfsroot.txt b/Documentation/filesystems/nfs/nfsroot.txt index 90c71c6..ffdd9d8 100644 --- a/Documentation/filesystems/nfs/nfsroot.txt +++ b/Documentation/filesystems/nfs/nfsroot.txt @@ -226,7 +226,7 @@ They depend on various facilities being available: cdrecord. e.g. - cdrecord dev=ATAPI:1,0,0 arch/i386/boot/image.iso + cdrecord dev=ATAPI:1,0,0 arch/x86/boot/image.iso For more information on isolinux, including how to create bootdisks for prebuilt kernels, see http://syslinux.zytor.com/ diff --git a/Documentation/filesystems/pohmelfs/design_notes.txt b/Documentation/filesystems/pohmelfs/design_notes.txt index dcf8335..8aef9133 100644 --- a/Documentation/filesystems/pohmelfs/design_notes.txt +++ b/Documentation/filesystems/pohmelfs/design_notes.txt @@ -58,8 +58,9 @@ data transfers. POHMELFS clients operate with a working set of servers and are capable of balancing read-only operations (like lookups or directory listings) between them according to IO priorities. Administrators can add or remove servers from the set at run-time via special commands (described -in Documentation/pohmelfs/info.txt file). Writes are replicated to all servers, which are connected -with write permission turned on. IO priority and permissions can be changed in run-time. +in Documentation/filesystems/pohmelfs/info.txt file). Writes are replicated to all servers, which +are connected with write permission turned on. IO priority and permissions can be changed in +run-time. POHMELFS is capable of full data channel encryption and/or strong crypto hashing. One can select any kernel supported cipher, encryption mode, hash type and operation mode diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting index 6e29954..b4a3d76 100644 --- a/Documentation/filesystems/porting +++ b/Documentation/filesystems/porting @@ -400,10 +400,32 @@ a file off. -- [mandatory] - --- -[mandatory] ->get_sb() is gone. Switch to use of ->mount(). Typically it's just a matter of switching from calling get_sb_... to mount_... and changing the function type. If you were doing it manually, just switch from setting ->mnt_root to some pointer to returning that pointer. On errors return ERR_PTR(...). + +-- +[mandatory] + ->permission() and generic_permission()have lost flags +argument; instead of passing IPERM_FLAG_RCU we add MAY_NOT_BLOCK into mask. + generic_permission() has also lost the check_acl argument; ACL checking +has been taken to VFS and filesystems need to provide a non-NULL ->i_op->get_acl +to read an ACL from disk. + +-- +[mandatory] + If you implement your own ->llseek() you must handle SEEK_HOLE and +SEEK_DATA. You can hanle this by returning -EINVAL, but it would be nicer to +support it in some way. The generic handler assumes that the entire file is +data and there is a virtual hole at the end of the file. So if the provided +offset is less than i_size and SEEK_DATA is specified, return the same offset. +If the above is true for the offset and you are given SEEK_HOLE, return the end +of the file. If the offset is i_size or greater return -ENXIO in either case. + +[mandatory] + If you have your own ->fsync() you must make sure to call +filemap_write_and_wait_range() so that all dirty pages are synced out properly. +You must also keep in mind that ->fsync() is not called with i_mutex held +anymore, so if you require i_mutex locking you must make sure to take it and +release it yourself. diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index db3b1ab..404a097 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -1263,7 +1263,7 @@ review the kernel documentation in the directory /usr/src/linux/Documentation. This chapter is heavily based on the documentation included in the pre 2.2 kernels, and became part of it in version 2.2.1 of the Linux kernel. -Please see: Documentation/sysctls/ directory for descriptions of these +Please see: Documentation/sysctl/ directory for descriptions of these entries. ------------------------------------------------------------------------------ @@ -1293,8 +1293,8 @@ may allocate from based on an estimation of its current memory and swap use. For example, if a task is using all allowed memory, its badness score will be 1000. If it is using half of its allowed memory, its score will be 500. -There is an additional factor included in the badness score: root -processes are given 3% extra memory over other tasks. +There is an additional factor included in the badness score: the current memory +and swap usage is discounted by 3% for root processes. The amount of "allowed" memory depends on the context in which the oom killer was called. If it is due to the memory assigned to the allocating task's cpuset diff --git a/Documentation/filesystems/squashfs.txt b/Documentation/filesystems/squashfs.txt index d4d4146..7db3ebd 100644 --- a/Documentation/filesystems/squashfs.txt +++ b/Documentation/filesystems/squashfs.txt @@ -2,7 +2,7 @@ SQUASHFS 4.0 FILESYSTEM ======================= Squashfs is a compressed read-only filesystem for Linux. -It uses zlib/lzo compression to compress files, inodes and directories. +It uses zlib/lzo/xz compression to compress files, inodes and directories. Inodes in the system are very small and all blocks are packed to minimise data overhead. Block sizes greater than 4K are supported up to a maximum of 1Mbytes (default block size 128K). @@ -55,6 +55,8 @@ create populated squashfs filesystems. This and other squashfs utilities can be obtained from http://www.squashfs.org. Usage instructions can be obtained from this site also. +The squashfs-tools development tree is now located on kernel.org + git://git.kernel.org/pub/scm/fs/squashfs/squashfs-tools.git 3. SQUASHFS FILESYSTEM DESIGN ----------------------------- diff --git a/Documentation/filesystems/sysfs.txt b/Documentation/filesystems/sysfs.txt index 597f728..07235ca 100644 --- a/Documentation/filesystems/sysfs.txt +++ b/Documentation/filesystems/sysfs.txt @@ -4,7 +4,7 @@ sysfs - _The_ filesystem for exporting kernel objects. Patrick Mochel <mochel@osdl.org> Mike Murphy <mamurph@cs.clemson.edu> -Revised: 15 July 2010 +Revised: 16 August 2011 Original: 10 January 2003 @@ -370,3 +370,11 @@ int driver_create_file(struct device_driver *, const struct driver_attribute *); void driver_remove_file(struct device_driver *, const struct driver_attribute *); +Documentation +~~~~~~~~~~~~~ + +The sysfs directory structure and the attributes in each directory define an +ABI between the kernel and user space. As for any ABI, it is important that +this ABI is stable and properly documented. All new sysfs attributes must be +documented in Documentation/ABI. See also Documentation/ABI/README for more +information. diff --git a/Documentation/filesystems/ubifs.txt b/Documentation/filesystems/ubifs.txt index 8e4fab6..a0a61d2 100644 --- a/Documentation/filesystems/ubifs.txt +++ b/Documentation/filesystems/ubifs.txt @@ -111,34 +111,6 @@ The following is an example of the kernel boot arguments to attach mtd0 to UBI and mount volume "rootfs": ubi.mtd=0 root=ubi0:rootfs rootfstype=ubifs - -Module Parameters for Debugging -=============================== - -When UBIFS has been compiled with debugging enabled, there are 2 module -parameters that are available to control aspects of testing and debugging. - -debug_chks Selects extra checks that UBIFS can do while running: - - Check Flag value - - General checks 1 - Check Tree Node Cache (TNC) 2 - Check indexing tree size 4 - Check orphan area 8 - Check old indexing tree 16 - Check LEB properties (lprops) 32 - Check leaf nodes and inodes 64 - -debug_tsts Selects a mode of testing, as follows: - - Test mode Flag value - - Failure mode for recovery testing 4 - -For example, set debug_chks to 3 to enable general and TNC checks. - - References ========== diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index 88b9f55..43cbd08 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -229,6 +229,8 @@ struct super_operations { ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t); ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t); + int (*nr_cached_objects)(struct super_block *); + void (*free_cached_objects)(struct super_block *, int); }; All methods are called without any locks being held, unless otherwise @@ -301,6 +303,26 @@ or bottom half). quota_write: called by the VFS to write to filesystem quota file. + nr_cached_objects: called by the sb cache shrinking function for the + filesystem to return the number of freeable cached objects it contains. + Optional. + + free_cache_objects: called by the sb cache shrinking function for the + filesystem to scan the number of objects indicated to try to free them. + Optional, but any filesystem implementing this method needs to also + implement ->nr_cached_objects for it to be called correctly. + + We can't do anything with any errors that the filesystem might + encountered, hence the void return type. This will never be called if + the VM is trying to reclaim under GFP_NOFS conditions, hence this + method does not need to handle that situation itself. + + Implementations must include conditional reschedule calls inside any + scanning loop that is done. This allows the VFS to determine + appropriate scan batch sizes without having to worry about whether + implementations will cause holdoff problems due to large scan batch + sizes. + Whoever sets up the inode is responsible for filling in the "i_op" field. This is a pointer to a "struct inode_operations" which describes the methods that can be performed on individual inodes. @@ -333,8 +355,8 @@ struct inode_operations { void * (*follow_link) (struct dentry *, struct nameidata *); void (*put_link) (struct dentry *, struct nameidata *, void *); void (*truncate) (struct inode *); - int (*permission) (struct inode *, int, unsigned int); - int (*check_acl)(struct inode *, int, unsigned int); + int (*permission) (struct inode *, int); + int (*get_acl)(struct inode *, int); int (*setattr) (struct dentry *, struct iattr *); int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *); int (*setxattr) (struct dentry *, const char *,const void *,size_t,int); @@ -423,7 +445,7 @@ otherwise noted. permission: called by the VFS to check for access rights on a POSIX-like filesystem. - May be called in rcu-walk mode (flags & IPERM_FLAG_RCU). If in rcu-walk + May be called in rcu-walk mode (mask & MAY_NOT_BLOCK). If in rcu-walk mode, the filesystem must check the permission without blocking or storing to the inode. @@ -755,7 +777,7 @@ struct file_operations { int (*open) (struct inode *, struct file *); int (*flush) (struct file *); int (*release) (struct inode *, struct file *); - int (*fsync) (struct file *, int datasync); + int (*fsync) (struct file *, loff_t, loff_t, int datasync); int (*aio_fsync) (struct kiocb *, int datasync); int (*fasync) (int, struct file *, int); int (*lock) (struct file *, int, struct file_lock *); @@ -1031,9 +1053,6 @@ manipulate dentries: and the dentry is returned. The caller must use dput() to free the dentry when it finishes using it. -For further information on dentry locking, please refer to the document -Documentation/filesystems/dentry-locking.txt. - Mount Options ============= diff --git a/Documentation/frv/booting.txt b/Documentation/frv/booting.txt index ace200b..9bdf4b4 100644 --- a/Documentation/frv/booting.txt +++ b/Documentation/frv/booting.txt @@ -106,13 +106,20 @@ separated by spaces: To use the first on-chip serial port at baud rate 115200, no parity, 8 bits, and no flow control. - (*) root=/dev/<xxxx> + (*) root=<xxxx> - This specifies the device upon which the root filesystem resides. For - example: + This specifies the device upon which the root filesystem resides. It + may be specified by major and minor number, device path, or even + partition uuid, if supported. For example: /dev/nfs NFS root filesystem /dev/mtdblock3 Fourth RedBoot partition on the System Flash + PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF/PARTNROFF=1 + first partition after the partition with the given UUID + 253:0 Device with major 253 and minor 0 + + Authoritative information can be found in + "Documentation/kernel-parameters.txt". (*) rw @@ -173,9 +180,3 @@ separated by spaces: This tells the kernel what program to run initially. By default this is /sbin/init, but /sbin/sash or /bin/sh are common alternatives. - - (*) vdc=... - - This option configures the MB93493 companion chip visual display - driver. Please see Documentation/frv/mb93493/vdc.txt for more - information. diff --git a/Documentation/hwmon/ad7314 b/Documentation/hwmon/ad7314 new file mode 100644 index 0000000..1912549 --- /dev/null +++ b/Documentation/hwmon/ad7314 @@ -0,0 +1,25 @@ +Kernel driver ad7314 +==================== + +Supported chips: + * Analog Devices AD7314 + Prefix: 'ad7314' + Datasheet: Publicly available at Analog Devices website. + * Analog Devices ADT7301 + Prefix: 'adt7301' + Datasheet: Publicly available at Analog Devices website. + * Analog Devices ADT7302 + Prefix: 'adt7302' + Datasheet: Publicly available at Analog Devices website. + +Description +----------- + +Driver supports the above parts. The ad7314 has a 10 bit +sensor with 1lsb = 0.25 degrees centigrade. The adt7301 and +adt7302 have 14 bit sensors with 1lsb = 0.03125 degrees centigrade. + +Notes +----- + +Currently power down mode is not supported. diff --git a/Documentation/hwmon/adm1275 b/Documentation/hwmon/adm1275 index 6a3a647..ab70d96 100644 --- a/Documentation/hwmon/adm1275 +++ b/Documentation/hwmon/adm1275 @@ -6,6 +6,10 @@ Supported chips: Prefix: 'adm1275' Addresses scanned: - Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf + * Analog Devices ADM1276 + Prefix: 'adm1276' + Addresses scanned: - + Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf Author: Guenter Roeck <guenter.roeck@ericsson.com> @@ -13,13 +17,13 @@ Author: Guenter Roeck <guenter.roeck@ericsson.com> Description ----------- -This driver supports hardware montoring for Analog Devices ADM1275 Hot-Swap -Controller and Digital Power Monitor. +This driver supports hardware montoring for Analog Devices ADM1275 and ADM1276 +Hot-Swap Controller and Digital Power Monitor. -The ADM1275 is a hot-swap controller that allows a circuit board to be removed -from or inserted into a live backplane. It also features current and voltage -readback via an integrated 12-bit analog-to-digital converter (ADC), accessed -using a PMBus. interface. +ADM1275 and ADM1276 are hot-swap controllers that allow a circuit board to be +removed from or inserted into a live backplane. They also feature current and +voltage readback via an integrated 12-bit analog-to-digital converter (ADC), +accessed using a PMBus interface. The driver is a client driver to the core PMBus driver. Please see Documentation/hwmon/pmbus for details on PMBus client drivers. @@ -43,18 +47,30 @@ Documentation/hwmon/pmbus for details. Sysfs entries ------------- -The following attributes are supported. Limits are read-write; all other -attributes are read-only. +The following attributes are supported. Limits are read-write, history reset +attributes are write-only, all other attributes are read-only. in1_label "vin1" or "vout1" depending on chip variant and configuration. -in1_input Measured voltage. From READ_VOUT register. -in1_min Minumum Voltage. From VOUT_UV_WARN_LIMIT register. -in1_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. -in1_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. -in1_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. +in1_input Measured voltage. +in1_min Minumum Voltage. +in1_max Maximum voltage. +in1_min_alarm Voltage low alarm. +in1_max_alarm Voltage high alarm. +in1_highest Historical maximum voltage. +in1_reset_history Write any value to reset history. curr1_label "iout1" -curr1_input Measured current. From READ_IOUT register. -curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. -curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT register. +curr1_input Measured current. +curr1_max Maximum current. +curr1_max_alarm Current high alarm. +curr1_lcrit Critical minimum current. Depending on the chip + configuration, either curr1_lcrit or curr1_crit is + supported, but not both. +curr1_lcrit_alarm Critical current low alarm. +curr1_crit Critical maximum current. Depending on the chip + configuration, either curr1_lcrit or curr1_crit is + supported, but not both. +curr1_crit_alarm Critical current high alarm. +curr1_highest Historical maximum current. +curr1_reset_history Write any value to reset history. diff --git a/Documentation/hwmon/coretemp b/Documentation/hwmon/coretemp index f85e913..eb5502e 100644 --- a/Documentation/hwmon/coretemp +++ b/Documentation/hwmon/coretemp @@ -6,7 +6,9 @@ Supported chips: Prefix: 'coretemp' CPUID: family 0x6, models 0xe (Pentium M DC), 0xf (Core 2 DC 65nm), 0x16 (Core 2 SC 65nm), 0x17 (Penryn 45nm), - 0x1a (Nehalem), 0x1c (Atom), 0x1e (Lynnfield) + 0x1a (Nehalem), 0x1c (Atom), 0x1e (Lynnfield), + 0x26 (Tunnel Creek Atom), 0x27 (Medfield Atom), + 0x36 (Cedar Trail Atom) Datasheet: Intel 64 and IA-32 Architectures Software Developer's Manual Volume 3A: System Programming Guide http://softwarecommunity.intel.com/Wiki/Mobility/720.htm @@ -42,9 +44,10 @@ tempX_label - Contains string "Core X", where X is processor number. For Package temp, this will be "Physical id Y", where Y is the package number. -The TjMax temperature is set to 85 degrees C if undocumented model specific -register (UMSR) 0xee has bit 30 set. If not the TjMax is 100 degrees C as -(sometimes) documented in processor datasheet. +On CPU models which support it, TjMax is read from a model-specific register. +On other models, it is set to an arbitrary value based on weak heuristics. +If these heuristics don't work for you, you can pass the correct TjMax value +as a module parameter (tjmax). Appendix A. Known TjMax lists (TBD): Some information comes from ark.intel.com @@ -64,6 +67,11 @@ Process Processor TjMax(C) U3400 105 P4505/P4500 90 +32nm Atom Processors + Z2460 90 + D2700/2550/2500 100 + N2850/2800/2650/2600 100 + 45nm Xeon Processors 5400 Quad-Core X5492, X5482, X5472, X5470, X5460, X5450 85 E5472, E5462, E5450/40/30/20/10/05 85 @@ -84,6 +92,9 @@ Process Processor TjMax(C) N475/470/455/450 100 N280/270 90 330/230 125 + E680/660/640/620 90 + E680T/660T/640T/620T 110 + CE4170/4150/4110 110 45nm Core2 Processors Solo ULV SU3500/3300 100 diff --git a/Documentation/hwmon/exynos4_tmu b/Documentation/hwmon/exynos4_tmu new file mode 100644 index 0000000..c3c6b41 --- /dev/null +++ b/Documentation/hwmon/exynos4_tmu @@ -0,0 +1,81 @@ +Kernel driver exynos4_tmu +================= + +Supported chips: +* ARM SAMSUNG EXYNOS4 series of SoC + Prefix: 'exynos4-tmu' + Datasheet: Not publicly available + +Authors: Donggeun Kim <dg77.kim@samsung.com> + +Description +----------- + +This driver allows to read temperature inside SAMSUNG EXYNOS4 series of SoC. + +The chip only exposes the measured 8-bit temperature code value +through a register. +Temperature can be taken from the temperature code. +There are three equations converting from temperature to temperature code. + +The three equations are: + 1. Two point trimming + Tc = (T - 25) * (TI2 - TI1) / (85 - 25) + TI1 + + 2. One point trimming + Tc = T + TI1 - 25 + + 3. No trimming + Tc = T + 50 + + Tc: Temperature code, T: Temperature, + TI1: Trimming info for 25 degree Celsius (stored at TRIMINFO register) + Temperature code measured at 25 degree Celsius which is unchanged + TI2: Trimming info for 85 degree Celsius (stored at TRIMINFO register) + Temperature code measured at 85 degree Celsius which is unchanged + +TMU(Thermal Management Unit) in EXYNOS4 generates interrupt +when temperature exceeds pre-defined levels. +The maximum number of configurable threshold is four. +The threshold levels are defined as follows: + Level_0: current temperature > trigger_level_0 + threshold + Level_1: current temperature > trigger_level_1 + threshold + Level_2: current temperature > trigger_level_2 + threshold + Level_3: current temperature > trigger_level_3 + threshold + + The threshold and each trigger_level are set + through the corresponding registers. + +When an interrupt occurs, this driver notify user space of +one of four threshold levels for the interrupt +through kobject_uevent_env and sysfs_notify functions. +Although an interrupt condition for level_0 can be set, +it is not notified to user space through sysfs_notify function. + +Sysfs Interface +--------------- +name name of the temperature sensor + RO + +temp1_input temperature + RO + +temp1_max temperature for level_1 interrupt + RO + +temp1_crit temperature for level_2 interrupt + RO + +temp1_emergency temperature for level_3 interrupt + RO + +temp1_max_alarm alarm for level_1 interrupt + RO + +temp1_crit_alarm + alarm for level_2 interrupt + RO + +temp1_emergency_alarm + alarm for level_3 interrupt + RO diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87 index 38425f0..6f496a5 100644 --- a/Documentation/hwmon/it87 +++ b/Documentation/hwmon/it87 @@ -76,7 +76,8 @@ IT8718F, IT8720F, IT8721F, IT8726F, IT8758E and SiS950 chips. These chips are 'Super I/O chips', supporting floppy disks, infrared ports, joysticks and other miscellaneous stuff. For hardware monitoring, they include an 'environment controller' with 3 temperature sensors, 3 fan -rotation speed sensors, 8 voltage sensors, and associated alarms. +rotation speed sensors, 8 voltage sensors, associated alarms, and chassis +intrusion detection. The IT8712F and IT8716F additionally feature VID inputs, used to report the Vcore voltage of the processor. The early IT8712F have 5 VID pins, diff --git a/Documentation/hwmon/lm25066 b/Documentation/hwmon/lm25066 new file mode 100644 index 0000000..a21db81 --- /dev/null +++ b/Documentation/hwmon/lm25066 @@ -0,0 +1,90 @@ +Kernel driver max8688 +===================== + +Supported chips: + * National Semiconductor LM25066 + Prefix: 'lm25066' + Addresses scanned: - + Datasheets: + http://www.national.com/pf/LM/LM25066.html + http://www.national.com/pf/LM/LM25066A.html + * National Semiconductor LM5064 + Prefix: 'lm5064' + Addresses scanned: - + Datasheet: + http://www.national.com/pf/LM/LM5064.html + * National Semiconductor LM5066 + Prefix: 'lm5066' + Addresses scanned: - + Datasheet: + http://www.national.com/pf/LM/LM5066.html + +Author: Guenter Roeck <guenter.roeck@ericsson.com> + + +Description +----------- + +This driver supports hardware montoring for National Semiconductor LM25066, +LM5064, and LM5064 Power Management, Monitoring, Control, and Protection ICs. + +The driver is a client driver to the core PMBus driver. Please see +Documentation/hwmon/pmbus for details on PMBus client drivers. + + +Usage Notes +----------- + +This driver does not auto-detect devices. You will have to instantiate the +devices explicitly. Please see Documentation/i2c/instantiating-devices for +details. + + +Platform data support +--------------------- + +The driver supports standard PMBus driver platform data. + + +Sysfs entries +------------- + +The following attributes are supported. Limits are read-write; all other +attributes are read-only. + +in1_label "vin" +in1_input Measured input voltage. +in1_average Average measured input voltage. +in1_min Minimum input voltage. +in1_max Maximum input voltage. +in1_min_alarm Input voltage low alarm. +in1_max_alarm Input voltage high alarm. + +in2_label "vout1" +in2_input Measured output voltage. +in2_average Average measured output voltage. +in2_min Minimum output voltage. +in2_min_alarm Output voltage low alarm. + +in3_label "vout2" +in3_input Measured voltage on vaux pin + +curr1_label "iin" +curr1_input Measured input current. +curr1_average Average measured input current. +curr1_max Maximum input current. +curr1_max_alarm Input current high alarm. + +power1_label "pin" +power1_input Measured input power. +power1_average Average measured input power. +power1_max Maximum input power limit. +power1_alarm Input power alarm +power1_input_highest Historical maximum power. +power1_reset_history Write any value to reset maximum power history. + +temp1_input Measured temperature. +temp1_max Maximum temperature. +temp1_crit Critical high temperature. +temp1_max_alarm Chip temperature high alarm. +temp1_crit_alarm Chip temperature critical high alarm. diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75 index a179040..c91a1d1 100644 --- a/Documentation/hwmon/lm75 +++ b/Documentation/hwmon/lm75 @@ -12,26 +12,46 @@ Supported chips: Addresses scanned: I2C 0x48 - 0x4f Datasheet: Publicly available at the National Semiconductor website http://www.national.com/ - * Dallas Semiconductor DS75 - Prefix: 'lm75' - Addresses scanned: I2C 0x48 - 0x4f - Datasheet: Publicly available at the Dallas Semiconductor website - http://www.maxim-ic.com/ - * Dallas Semiconductor DS1775 - Prefix: 'lm75' - Addresses scanned: I2C 0x48 - 0x4f + * Dallas Semiconductor DS75, DS1775 + Prefixes: 'ds75', 'ds1775' + Addresses scanned: none Datasheet: Publicly available at the Dallas Semiconductor website http://www.maxim-ic.com/ * Maxim MAX6625, MAX6626 - Prefix: 'lm75' - Addresses scanned: I2C 0x48 - 0x4b + Prefixes: 'max6625', 'max6626' + Addresses scanned: none Datasheet: Publicly available at the Maxim website http://www.maxim-ic.com/ * Microchip (TelCom) TCN75 Prefix: 'lm75' - Addresses scanned: I2C 0x48 - 0x4f + Addresses scanned: none + Datasheet: Publicly available at the Microchip website + http://www.microchip.com/ + * Microchip MCP9800, MCP9801, MCP9802, MCP9803 + Prefix: 'mcp980x' + Addresses scanned: none Datasheet: Publicly available at the Microchip website http://www.microchip.com/ + * Analog Devices ADT75 + Prefix: 'adt75' + Addresses scanned: none + Datasheet: Publicly available at the Analog Devices website + http://www.analog.com/adt75 + * ST Microelectronics STDS75 + Prefix: 'stds75' + Addresses scanned: none + Datasheet: Publicly available at the ST website + http://www.st.com/internet/analog/product/121769.jsp + * Texas Instruments TMP100, TMP101, TMP105, TMP75, TMP175, TMP275 + Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp175', 'tmp75', 'tmp275' + Addresses scanned: none + Datasheet: Publicly available at the Texas Instruments website + http://www.ti.com/product/tmp100 + http://www.ti.com/product/tmp101 + http://www.ti.com/product/tmp105 + http://www.ti.com/product/tmp75 + http://www.ti.com/product/tmp175 + http://www.ti.com/product/tmp275 Author: Frodo Looijaard <frodol@dds.nl> @@ -50,21 +70,16 @@ range of -55 to +125 degrees. The LM75 only updates its values each 1.5 seconds; reading it more often will do no harm, but will return 'old' values. -The LM75 is usually used in combination with LM78-like chips, to measure -the temperature of the processor(s). - -The DS75, DS1775, MAX6625, and MAX6626 are supported as well. -They are not distinguished from an LM75. While most of these chips -have three additional bits of accuracy (12 vs. 9 for the LM75), -the additional bits are not supported. Not only that, but these chips will -not be detected if not in 9-bit precision mode (use the force parameter if -needed). - -The TCN75 is supported as well, and is not distinguished from an LM75. +The original LM75 was typically used in combination with LM78-like chips +on PC motherboards, to measure the temperature of the processor(s). Clones +are now used in various embedded designs. The LM75 is essentially an industry standard; there may be other LM75 clones not listed here, with or without various enhancements, -that are supported. +that are supported. The clones are not detected by the driver, unless +they reproduce the exact register tricks of the original LM75, and must +therefore be instantiated explicitly. The specific enhancements (such as +higher resolution) are not currently supported by the driver. The LM77 is not supported, contrary to what we pretended for a long time. Both chips are simply not compatible, value encoding differs. diff --git a/Documentation/hwmon/lm78 b/Documentation/hwmon/lm78 index 60932e2..2bdc881 100644 --- a/Documentation/hwmon/lm78 +++ b/Documentation/hwmon/lm78 @@ -13,7 +13,8 @@ Supported chips: Datasheet: Publicly available at the National Semiconductor website http://www.national.com/ -Author: Frodo Looijaard <frodol@dds.nl> +Authors: Frodo Looijaard <frodol@dds.nl> + Jean Delvare <khali@linux-fr.org> Description ----------- diff --git a/Documentation/hwmon/lm90 b/Documentation/hwmon/lm90 index f3efd18..9cd14cfe 100644 --- a/Documentation/hwmon/lm90 +++ b/Documentation/hwmon/lm90 @@ -113,7 +113,11 @@ Supported chips: Prefix: 'w83l771' Addresses scanned: I2C 0x4c Datasheet: Not publicly available, can be requested from Nuvoton - + * Philips/NXP SA56004X + Prefix: 'sa56004' + Addresses scanned: I2C 0x48 through 0x4F + Datasheet: Publicly available at NXP website + http://ics.nxp.com/products/interface/datasheet/sa56004x.pdf Author: Jean Delvare <khali@linux-fr.org> @@ -193,6 +197,9 @@ W83L771AWG/ASG * The AWG and ASG variants only differ in package format. * Diode ideality factor configuration (remote sensor) at 0xE3 +SA56004X: + * Better local resolution + All temperature values are given in degrees Celsius. Resolution is 1.0 degree for the local temperature, 0.125 degree for the remote temperature, except for the MAX6657, MAX6658 and MAX6659 which have a diff --git a/Documentation/hwmon/lm95245 b/Documentation/hwmon/lm95245 new file mode 100644 index 0000000..cbd8aea --- /dev/null +++ b/Documentation/hwmon/lm95245 @@ -0,0 +1,33 @@ +Kernel driver lm95245 +================== + +Supported chips: + * National Semiconductor LM95245 + Addresses scanned: I2C 0x18, 0x19, 0x29, 0x4c, 0x4d + Datasheet: Publicly available at the National Semiconductor website + http://www.national.com/mpf/LM/LM95245.html + + +Author: Alexander Stein <alexander.stein@systec-electronic.com> + +Description +----------- + +The LM95245 is an 11-bit digital temperature sensor with a 2-wire System +Management Bus (SMBus) interface and TruTherm technology that can monitor +the temperature of a remote diode as well as its own temperature. +The LM95245 can be used to very accurately monitor the temperature of +external devices such as microprocessors. + +All temperature values are given in millidegrees Celsius. Local temperature +is given within a range of -127 to +127.875 degrees. Remote temperatures are +given within a range of -127 to +255 degrees. Resolution depends on +temperature input and range. + +Each sensor has its own critical limit, but the hysteresis is common to all +two channels. + +The lm95245 driver can change its update interval to a fixed set of values. +It will round up to the next selectable interval. See the datasheet for exact +values. Reading sensor values more often will do no harm, but will return +'old' values. diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978 new file mode 100644 index 0000000..c365f9b --- /dev/null +++ b/Documentation/hwmon/ltc2978 @@ -0,0 +1,103 @@ +Kernel driver ltc2978 +===================== + +Supported chips: + * Linear Technology LTC2978 + Prefix: 'ltc2978' + Addresses scanned: - + Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf + * Linear Technology LTC3880 + Prefix: 'ltc3880' + Addresses scanned: - + Datasheet: http://cds.linear.com/docs/Datasheet/3880f.pdf + +Author: Guenter Roeck <guenter.roeck@ericsson.com> + + +Description +----------- + +The LTC2978 is an octal power supply monitor, supervisor, sequencer and +margin controller. The LTC3880 is a dual, PolyPhase DC/DC synchronous +step-down switching regulator controller. + + +Usage Notes +----------- + +This driver does not probe for PMBus devices. You will have to instantiate +devices explicitly. + +Example: the following commands will load the driver for an LTC2978 at address +0x60 on I2C bus #1: + +# modprobe ltc2978 +# echo ltc2978 0x60 > /sys/bus/i2c/devices/i2c-1/new_device + + +Sysfs attributes +---------------- + +in1_label "vin" +in1_input Measured input voltage. +in1_min Minimum input voltage. +in1_max Maximum input voltage. +in1_lcrit Critical minimum input voltage. +in1_crit Critical maximum input voltage. +in1_min_alarm Input voltage low alarm. +in1_max_alarm Input voltage high alarm. +in1_lcrit_alarm Input voltage critical low alarm. +in1_crit_alarm Input voltage critical high alarm. +in1_lowest Lowest input voltage. LTC2978 only. +in1_highest Highest input voltage. +in1_reset_history Reset history. Writing into this attribute will reset + history for all attributes. + +in[2-9]_label "vout[1-8]". Channels 3 to 9 on LTC2978 only. +in[2-9]_input Measured output voltage. +in[2-9]_min Minimum output voltage. +in[2-9]_max Maximum output voltage. +in[2-9]_lcrit Critical minimum output voltage. +in[2-9]_crit Critical maximum output voltage. +in[2-9]_min_alarm Output voltage low alarm. +in[2-9]_max_alarm Output voltage high alarm. +in[2-9]_lcrit_alarm Output voltage critical low alarm. +in[2-9]_crit_alarm Output voltage critical high alarm. +in[2-9]_lowest Lowest output voltage. LTC2978 only. +in[2-9]_highest Lowest output voltage. +in[2-9]_reset_history Reset history. Writing into this attribute will reset + history for all attributes. + +temp[1-3]_input Measured temperature. + On LTC2978, only one temperature measurement is + supported and reflects the internal temperature. + On LTC3880, temp1 and temp2 report external + temperatures, and temp3 reports the internal + temperature. +temp[1-3]_min Mimimum temperature. +temp[1-3]_max Maximum temperature. +temp[1-3]_lcrit Critical low temperature. +temp[1-3]_crit Critical high temperature. +temp[1-3]_min_alarm Chip temperature low alarm. +temp[1-3]_max_alarm Chip temperature high alarm. +temp[1-3]_lcrit_alarm Chip temperature critical low alarm. +temp[1-3]_crit_alarm Chip temperature critical high alarm. +temp[1-3]_lowest Lowest measured temperature. LTC2978 only. +temp[1-3]_highest Highest measured temperature. +temp[1-3]_reset_history Reset history. Writing into this attribute will reset + history for all attributes. + +power[1-2]_label "pout[1-2]". LTC3880 only. +power[1-2]_input Measured power. + +curr1_label "iin". LTC3880 only. +curr1_input Measured input current. +curr1_max Maximum input current. +curr1_max_alarm Input current high alarm. + +curr[2-3]_label "iout[1-2]". LTC3880 only. +curr[2-3]_input Measured input current. +curr[2-3]_max Maximum input current. +curr[2-3]_crit Critical input current. +curr[2-3]_max_alarm Input current high alarm. +curr[2-3]_crit_alarm Input current critical high alarm. diff --git a/Documentation/hwmon/max16064 b/Documentation/hwmon/max16064 index 4172899..f6e8bcb 100644 --- a/Documentation/hwmon/max16064 +++ b/Documentation/hwmon/max16064 @@ -50,6 +50,8 @@ in[1-4]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. in[1-4]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. in[1-4]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status. in[1-4]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status. +in[1-4]_highest Historical maximum voltage. +in[1-4]_reset_history Write any value to reset history. temp1_input Measured temperature. From READ_TEMPERATURE_1 register. temp1_max Maximum temperature. From OT_WARN_LIMIT register. @@ -60,3 +62,5 @@ temp1_max_alarm Chip temperature high alarm. Set by comparing temp1_crit_alarm Chip temperature critical high alarm. Set by comparing READ_TEMPERATURE_1 with OT_FAULT_LIMIT if TEMP_OT_FAULT status is set. +temp1_highest Historical maximum temperature. +temp1_reset_history Write any value to reset history. diff --git a/Documentation/hwmon/max16065 b/Documentation/hwmon/max16065 index 44b4f61..c11f64a 100644 --- a/Documentation/hwmon/max16065 +++ b/Documentation/hwmon/max16065 @@ -62,6 +62,13 @@ can be safely used to identify the chip. You will have to instantiate the devices explicitly. Please see Documentation/i2c/instantiating-devices for details. +WARNING: Do not access chip registers using the i2cdump command, and do not use +any of the i2ctools commands on a command register (0xa5 to 0xac). The chips +supported by this driver interpret any access to a command register (including +read commands) as request to execute the command in question. This may result in +power loss, board resets, and/or Flash corruption. Worst case, your board may +turn into a brick. + Sysfs entries ------------- diff --git a/Documentation/hwmon/max1668 b/Documentation/hwmon/max1668 new file mode 100644 index 0000000..0616ed9 --- /dev/null +++ b/Documentation/hwmon/max1668 @@ -0,0 +1,60 @@ +Kernel driver max1668 +===================== + +Supported chips: + * Maxim MAX1668, MAX1805 and MAX1989 + Prefix: 'max1668' + Addresses scanned: I2C 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e + Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX1668-MAX1989.pdf + +Author: + David George <david.george@ska.ac.za> + +Description +----------- + +This driver implements support for the Maxim MAX1668, MAX1805 and MAX1989 +chips. + +The three devices are very similar, but the MAX1805 has a reduced feature +set; only two remote temperature inputs vs the four avaible on the other +two ICs. + +The driver is able to distinguish between the devices and creates sysfs +entries as follows: + +MAX1805, MAX1668 and MAX1989: + +temp1_input ro local (ambient) temperature +temp1_max rw local temperature maximum threshold for alarm +temp1_max_alarm ro local temperature maximum threshold alarm +temp1_min rw local temperature minimum threshold for alarm +temp1_min_alarm ro local temperature minimum threshold alarm +temp2_input ro remote temperature 1 +temp2_max rw remote temperature 1 maximum threshold for alarm +temp2_max_alarm ro remote temperature 1 maximum threshold alarm +temp2_min rw remote temperature 1 minimum threshold for alarm +temp2_min_alarm ro remote temperature 1 minimum threshold alarm +temp3_input ro remote temperature 2 +temp3_max rw remote temperature 2 maximum threshold for alarm +temp3_max_alarm ro remote temperature 2 maximum threshold alarm +temp3_min rw remote temperature 2 minimum threshold for alarm +temp3_min_alarm ro remote temperature 2 minimum threshold alarm + +MAX1668 and MAX1989 only: +temp4_input ro remote temperature 3 +temp4_max rw remote temperature 3 maximum threshold for alarm +temp4_max_alarm ro remote temperature 3 maximum threshold alarm +temp4_min rw remote temperature 3 minimum threshold for alarm +temp4_min_alarm ro remote temperature 3 minimum threshold alarm +temp5_input ro remote temperature 4 +temp5_max rw remote temperature 4 maximum threshold for alarm +temp5_max_alarm ro remote temperature 4 maximum threshold alarm +temp5_min rw remote temperature 4 minimum threshold for alarm +temp5_min_alarm ro remote temperature 4 minimum threshold alarm + +Module Parameters +----------------- + +* read_only: int + Set to non-zero if you wish to prevent write access to alarm thresholds. diff --git a/Documentation/hwmon/max34440 b/Documentation/hwmon/max34440 index 6c525dd..8ab5153 100644 --- a/Documentation/hwmon/max34440 +++ b/Documentation/hwmon/max34440 @@ -56,6 +56,8 @@ in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status. in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status. +in[1-6]_highest Historical maximum voltage. +in[1-6]_reset_history Write any value to reset history. curr[1-6]_label "iout[1-6]". curr[1-6]_input Measured current. From READ_IOUT register. @@ -63,6 +65,8 @@ curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register. curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status. curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. +curr[1-6]_highest Historical maximum current. +curr[1-6]_reset_history Write any value to reset history. in6 and curr6 attributes only exist for MAX34440. @@ -75,5 +79,7 @@ temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register. temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register. temp[1-8]_max_alarm Temperature high alarm. temp[1-8]_crit_alarm Temperature critical high alarm. +temp[1-8]_highest Historical maximum temperature. +temp[1-8]_reset_history Write any value to reset history. temp7 and temp8 attributes only exist for MAX34440. diff --git a/Documentation/hwmon/max8688 b/Documentation/hwmon/max8688 index 0ddd3a4..71ed10a 100644 --- a/Documentation/hwmon/max8688 +++ b/Documentation/hwmon/max8688 @@ -50,6 +50,8 @@ in1_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. in1_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. in1_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status. in1_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status. +in1_highest Historical maximum voltage. +in1_reset_history Write any value to reset history. curr1_label "iout1" curr1_input Measured current. From READ_IOUT register. @@ -57,6 +59,8 @@ curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. curr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT register. curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. +curr1_highest Historical maximum current. +curr1_reset_history Write any value to reset history. temp1_input Measured temperature. From READ_TEMPERATURE_1 register. temp1_max Maximum temperature. From OT_WARN_LIMIT register. @@ -67,3 +71,5 @@ temp1_max_alarm Chip temperature high alarm. Set by comparing temp1_crit_alarm Chip temperature critical high alarm. Set by comparing READ_TEMPERATURE_1 with OT_FAULT_LIMIT if TEMP_OT_FAULT status is set. +temp1_highest Historical maximum temperature. +temp1_reset_history Write any value to reset history. diff --git a/Documentation/hwmon/ntc_thermistor b/Documentation/hwmon/ntc_thermistor new file mode 100644 index 0000000..3bfda94 --- /dev/null +++ b/Documentation/hwmon/ntc_thermistor @@ -0,0 +1,93 @@ +Kernel driver ntc_thermistor +================= + +Supported thermistors: +* Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, NCP15WL333 + Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473', 'ncp15wl333' + Datasheet: Publicly available at Murata + +Other NTC thermistors can be supported simply by adding compensation +tables; e.g., NCP15WL333 support is added by the table ncpXXwl333. + +Authors: + MyungJoo Ham <myungjoo.ham@samsung.com> + +Description +----------- + +The NTC thermistor is a simple thermistor that requires users to provide the +resistance and lookup the corresponding compensation table to get the +temperature input. + +The NTC driver provides lookup tables with a linear approximation function +and four circuit models with an option not to use any of the four models. + +The four circuit models provided are: + + $: resister, [TH]: the thermistor + + 1. connect = NTC_CONNECTED_POSITIVE, pullup_ohm > 0 + + [pullup_uV] + | | + [TH] $ (pullup_ohm) + | | + +----+-----------------------[read_uV] + | + $ (pulldown_ohm) + | + --- (ground) + + 2. connect = NTC_CONNECTED_POSITIVE, pullup_ohm = 0 (not-connected) + + [pullup_uV] + | + [TH] + | + +----------------------------[read_uV] + | + $ (pulldown_ohm) + | + --- (ground) + + 3. connect = NTC_CONNECTED_GROUND, pulldown_ohm > 0 + + [pullup_uV] + | + $ (pullup_ohm) + | + +----+-----------------------[read_uV] + | | + [TH] $ (pulldown_ohm) + | | + -------- (ground) + + 4. connect = NTC_CONNECTED_GROUND, pulldown_ohm = 0 (not-connected) + + [pullup_uV] + | + $ (pullup_ohm) + | + +----------------------------[read_uV] + | + [TH] + | + --- (ground) + +When one of the four circuit models is used, read_uV, pullup_uV, pullup_ohm, +pulldown_ohm, and connect should be provided. When none of the four models +are suitable or the user can get the resistance directly, the user should +provide read_ohm and _not_ provide the others. + +Sysfs Interface +--------------- +name the mandatory global attribute, the thermistor name. + +temp1_type always 4 (thermistor) + RO + +temp1_input measure the temperature and provide the measured value. + (reading this file initiates the reading procedure.) + RO + +Note that each NTC thermistor has only _one_ thermistor; thus, only temp1 exists. diff --git a/Documentation/hwmon/pmbus b/Documentation/hwmon/pmbus index 5e462fc..15ac911 100644 --- a/Documentation/hwmon/pmbus +++ b/Documentation/hwmon/pmbus @@ -8,11 +8,21 @@ Supported chips: Addresses scanned: - Datasheet: http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146395 - * Linear Technology LTC2978 - Octal PMBus Power Supply Monitor and Controller - Prefix: 'ltc2978' + * ON Semiconductor ADP4000, NCP4200, NCP4208 + Prefixes: 'adp4000', 'ncp4200', 'ncp4208' Addresses scanned: - - Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf + Datasheets: + http://www.onsemi.com/pub_link/Collateral/ADP4000-D.PDF + http://www.onsemi.com/pub_link/Collateral/NCP4200-D.PDF + http://www.onsemi.com/pub_link/Collateral/JUNE%202009-%20REV.%200.PDF + * Lineage Power + Prefixes: 'pdt003', 'pdt006', 'pdt012', 'udt020' + Addresses scanned: - + Datasheets: + http://www.lineagepower.com/oem/pdf/PDT003A0X.pdf + http://www.lineagepower.com/oem/pdf/PDT006A0X.pdf + http://www.lineagepower.com/oem/pdf/PDT012A0X.pdf + http://www.lineagepower.com/oem/pdf/UDT020A0X.pdf * Generic PMBus devices Prefix: 'pmbus' Addresses scanned: - diff --git a/Documentation/hwmon/pmbus-core b/Documentation/hwmon/pmbus-core new file mode 100644 index 0000000..31e4720 --- /dev/null +++ b/Documentation/hwmon/pmbus-core @@ -0,0 +1,283 @@ +PMBus core driver and internal API +================================== + +Introduction +============ + +[from pmbus.org] The Power Management Bus (PMBus) is an open standard +power-management protocol with a fully defined command language that facilitates +communication with power converters and other devices in a power system. The +protocol is implemented over the industry-standard SMBus serial interface and +enables programming, control, and real-time monitoring of compliant power +conversion products. This flexible and highly versatile standard allows for +communication between devices based on both analog and digital technologies, and +provides true interoperability which will reduce design complexity and shorten +time to market for power system designers. Pioneered by leading power supply and +semiconductor companies, this open power system standard is maintained and +promoted by the PMBus Implementers Forum (PMBus-IF), comprising 30+ adopters +with the objective to provide support to, and facilitate adoption among, users. + +Unfortunately, while PMBus commands are standardized, there are no mandatory +commands, and manufacturers can add as many non-standard commands as they like. +Also, different PMBUs devices act differently if non-supported commands are +executed. Some devices return an error, some devices return 0xff or 0xffff and +set a status error flag, and some devices may simply hang up. + +Despite all those difficulties, a generic PMBus device driver is still useful +and supported since kernel version 2.6.39. However, it was necessary to support +device specific extensions in addition to the core PMBus driver, since it is +simply unknown what new device specific functionality PMBus device developers +come up with next. + +To make device specific extensions as scalable as possible, and to avoid having +to modify the core PMBus driver repeatedly for new devices, the PMBus driver was +split into core, generic, and device specific code. The core code (in +pmbus_core.c) provides generic functionality. The generic code (in pmbus.c) +provides support for generic PMBus devices. Device specific code is responsible +for device specific initialization and, if needed, maps device specific +functionality into generic functionality. This is to some degree comparable +to PCI code, where generic code is augmented as needed with quirks for all kinds +of devices. + +PMBus device capabilities auto-detection +======================================== + +For generic PMBus devices, code in pmbus.c attempts to auto-detect all supported +PMBus commands. Auto-detection is somewhat limited, since there are simply too +many variables to consider. For example, it is almost impossible to autodetect +which PMBus commands are paged and which commands are replicated across all +pages (see the PMBus specification for details on multi-page PMBus devices). + +For this reason, it often makes sense to provide a device specific driver if not +all commands can be auto-detected. The data structures in this driver can be +used to inform the core driver about functionality supported by individual +chips. + +Some commands are always auto-detected. This applies to all limit commands +(lcrit, min, max, and crit attributes) as well as associated alarm attributes. +Limits and alarm attributes are auto-detected because there are simply too many +possible combinations to provide a manual configuration interface. + +PMBus internal API +================== + +The API between core and device specific PMBus code is defined in +drivers/hwmon/pmbus/pmbus.h. In addition to the internal API, pmbus.h defines +standard PMBus commands and virtual PMBus commands. + +Standard PMBus commands +----------------------- + +Standard PMBus commands (commands values 0x00 to 0xff) are defined in the PMBUs +specification. + +Virtual PMBus commands +---------------------- + +Virtual PMBus commands are provided to enable support for non-standard +functionality which has been implemented by several chip vendors and is thus +desirable to support. + +Virtual PMBus commands start with command value 0x100 and can thus easily be +distinguished from standard PMBus commands (which can not have values larger +than 0xff). Support for virtual PMBus commands is device specific and thus has +to be implemented in device specific code. + +Virtual commands are named PMBUS_VIRT_xxx and start with PMBUS_VIRT_BASE. All +virtual commands are word sized. + +There are currently two types of virtual commands. + +- READ commands are read-only; writes are either ignored or return an error. +- RESET commands are read/write. Reading reset registers returns zero + (used for detection), writing any value causes the associated history to be + reset. + +Virtual commands have to be handled in device specific driver code. Chip driver +code returns non-negative values if a virtual command is supported, or a +negative error code if not. The chip driver may return -ENODATA or any other +Linux error code in this case, though an error code other than -ENODATA is +handled more efficiently and thus preferred. Either case, the calling PMBus +core code will abort if the chip driver returns an error code when reading +or writing virtual registers (in other words, the PMBus core code will never +send a virtual command to a chip). + +PMBus driver information +------------------------ + +PMBus driver information, defined in struct pmbus_driver_info, is the main means +for device specific drivers to pass information to the core PMBus driver. +Specifically, it provides the following information. + +- For devices supporting its data in Direct Data Format, it provides coefficients + for converting register values into normalized data. This data is usually + provided by chip manufacturers in device datasheets. +- Supported chip functionality can be provided to the core driver. This may be + necessary for chips which react badly if non-supported commands are executed, + and/or to speed up device detection and initialization. +- Several function entry points are provided to support overriding and/or + augmenting generic command execution. This functionality can be used to map + non-standard PMBus commands to standard commands, or to augment standard + command return values with device specific information. + + API functions + ------------- + + Functions provided by chip driver + --------------------------------- + + All functions return the command return value (read) or zero (write) if + successful. A return value of -ENODATA indicates that there is no manufacturer + specific command, but that a standard PMBus command may exist. Any other + negative return value indicates that the commands does not exist for this + chip, and that no attempt should be made to read or write the standard + command. + + As mentioned above, an exception to this rule applies to virtual commands, + which _must_ be handled in driver specific code. See "Virtual PMBus Commands" + above for more details. + + Command execution in the core PMBus driver code is as follows. + + if (chip_access_function) { + status = chip_access_function(); + if (status != -ENODATA) + return status; + } + if (command >= PMBUS_VIRT_BASE) /* For word commands/registers only */ + return -EINVAL; + return generic_access(); + + Chip drivers may provide pointers to the following functions in struct + pmbus_driver_info. All functions are optional. + + int (*read_byte_data)(struct i2c_client *client, int page, int reg); + + Read byte from page <page>, register <reg>. + <page> may be -1, which means "current page". + + int (*read_word_data)(struct i2c_client *client, int page, int reg); + + Read word from page <page>, register <reg>. + + int (*write_word_data)(struct i2c_client *client, int page, int reg, + u16 word); + + Write word to page <page>, register <reg>. + + int (*write_byte)(struct i2c_client *client, int page, u8 value); + + Write byte to page <page>, register <reg>. + <page> may be -1, which means "current page". + + int (*identify)(struct i2c_client *client, struct pmbus_driver_info *info); + + Determine supported PMBus functionality. This function is only necessary + if a chip driver supports multiple chips, and the chip functionality is not + pre-determined. It is currently only used by the generic pmbus driver + (pmbus.c). + + Functions exported by core driver + --------------------------------- + + Chip drivers are expected to use the following functions to read or write + PMBus registers. Chip drivers may also use direct I2C commands. If direct I2C + commands are used, the chip driver code must not directly modify the current + page, since the selected page is cached in the core driver and the core driver + will assume that it is selected. Using pmbus_set_page() to select a new page + is mandatory. + + int pmbus_set_page(struct i2c_client *client, u8 page); + + Set PMBus page register to <page> for subsequent commands. + + int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg); + + Read word data from <page>, <reg>. Similar to i2c_smbus_read_word_data(), but + selects page first. + + int pmbus_write_word_data(struct i2c_client *client, u8 page, u8 reg, + u16 word); + + Write word data to <page>, <reg>. Similar to i2c_smbus_write_word_data(), but + selects page first. + + int pmbus_read_byte_data(struct i2c_client *client, int page, u8 reg); + + Read byte data from <page>, <reg>. Similar to i2c_smbus_read_byte_data(), but + selects page first. <page> may be -1, which means "current page". + + int pmbus_write_byte(struct i2c_client *client, int page, u8 value); + + Write byte data to <page>, <reg>. Similar to i2c_smbus_write_byte(), but + selects page first. <page> may be -1, which means "current page". + + void pmbus_clear_faults(struct i2c_client *client); + + Execute PMBus "Clear Fault" command on all chip pages. + This function calls the device specific write_byte function if defined. + Therefore, it must _not_ be called from that function. + + bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg); + + Check if byte register exists. Return true if the register exists, false + otherwise. + This function calls the device specific write_byte function if defined to + obtain the chip status. Therefore, it must _not_ be called from that function. + + bool pmbus_check_word_register(struct i2c_client *client, int page, int reg); + + Check if word register exists. Return true if the register exists, false + otherwise. + This function calls the device specific write_byte function if defined to + obtain the chip status. Therefore, it must _not_ be called from that function. + + int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id, + struct pmbus_driver_info *info); + + Execute probe function. Similar to standard probe function for other drivers, + with the pointer to struct pmbus_driver_info as additional argument. Calls + identify function if supported. Must only be called from device probe + function. + + void pmbus_do_remove(struct i2c_client *client); + + Execute driver remove function. Similar to standard driver remove function. + + const struct pmbus_driver_info + *pmbus_get_driver_info(struct i2c_client *client); + + Return pointer to struct pmbus_driver_info as passed to pmbus_do_probe(). + + +PMBus driver platform data +========================== + +PMBus platform data is defined in include/linux/i2c/pmbus.h. Platform data +currently only provides a flag field with a single bit used. + +#define PMBUS_SKIP_STATUS_CHECK (1 << 0) + +struct pmbus_platform_data { + u32 flags; /* Device specific flags */ +}; + + +Flags +----- + +PMBUS_SKIP_STATUS_CHECK + +During register detection, skip checking the status register for +communication or command errors. + +Some PMBus chips respond with valid data when trying to read an unsupported +register. For such chips, checking the status register is mandatory when +trying to determine if a chip register exists or not. +Other PMBus chips don't support the STATUS_CML register, or report +communication errors for no explicable reason. For such chips, checking the +status register must be disabled. + +Some i2c controllers do not support single-byte commands (write commands with +no data, i2c_smbus_write_byte()). With such controllers, clearing the status +register is impossible, and the PMBUS_SKIP_STATUS_CHECK flag must be set. diff --git a/Documentation/hwmon/sch5636 b/Documentation/hwmon/sch5636 new file mode 100644 index 0000000..f83bd1c --- /dev/null +++ b/Documentation/hwmon/sch5636 @@ -0,0 +1,31 @@ +Kernel driver sch5636 +===================== + +Supported chips: + * SMSC SCH5636 + Prefix: 'sch5636' + Addresses scanned: none, address read from Super I/O config space + +Author: Hans de Goede <hdegoede@redhat.com> + + +Description +----------- + +SMSC SCH5636 Super I/O chips include an embedded microcontroller for +hardware monitoring solutions, allowing motherboard manufacturers to create +their own custom hwmon solution based upon the SCH5636. + +Currently the sch5636 driver only supports the Fujitsu Theseus SCH5636 based +hwmon solution. The sch5636 driver runs a sanity check on loading to ensure +it is dealing with a Fujitsu Theseus and not with another custom SCH5636 based +hwmon solution. + +The Fujitsu Theseus can monitor up to 5 voltages, 8 fans and 16 +temperatures. Note that the driver detects how many fan headers / +temperature sensors are actually implemented on the motherboard, so you will +likely see fewer temperature and fan inputs. + +An application note describing the Theseus' registers, as well as an +application note describing the protocol for communicating with the +microcontroller is available upon request. Please mail me if you want a copy. diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface index 8f63c24..a4aa8f6 100644 --- a/Documentation/hwmon/sysfs-interface +++ b/Documentation/hwmon/sysfs-interface @@ -139,6 +139,29 @@ in[0-*]_input Voltage input value. thumb: drivers should report the voltage values at the "pins" of the chip. +in[0-*]_average + Average voltage + Unit: millivolt + RO + +in[0-*]_lowest + Historical minimum voltage + Unit: millivolt + RO + +in[0-*]_highest + Historical maximum voltage + Unit: millivolt + RO + +in[0-*]_reset_history + Reset inX_lowest and inX_highest + WO + +in_reset_history + Reset inX_lowest and inX_highest for all sensors + WO + in[0-*]_label Suggested voltage channel label. Text string Should only be created if the driver has hints about what @@ -407,6 +430,29 @@ curr[1-*]_input Current input value Unit: milliampere RO +curr[1-*]_average + Average current use + Unit: milliampere + RO + +curr[1-*]_lowest + Historical minimum current + Unit: milliampere + RO + +curr[1-*]_highest + Historical maximum current + Unit: milliampere + RO + +curr[1-*]_reset_history + Reset currX_lowest and currX_highest + WO + +curr_reset_history + Reset currX_lowest and currX_highest for all sensors + WO + Also see the Alarms section for status flags associated with currents. ********* diff --git a/Documentation/hwmon/w83627ehf b/Documentation/hwmon/w83627ehf index 76ffef9..75f3155 100644 --- a/Documentation/hwmon/w83627ehf +++ b/Documentation/hwmon/w83627ehf @@ -14,6 +14,10 @@ Supported chips: Prefix: 'w83627dhg' Addresses scanned: ISA address retrieved from Super I/O registers Datasheet: not available + * Winbond W83627UHG + Prefix: 'w83627uhg' + Addresses scanned: ISA address retrieved from Super I/O registers + Datasheet: available from www.nuvoton.com * Winbond W83667HG Prefix: 'w83667hg' Addresses scanned: ISA address retrieved from Super I/O registers @@ -42,14 +46,13 @@ Description ----------- This driver implements support for the Winbond W83627EHF, W83627EHG, -W83627DHG, W83627DHG-P, W83667HG, W83667HG-B, W83667HG-I (NCT6775F), -and NCT6776F super I/O chips. We will refer to them collectively as -Winbond chips. - -The chips implement three temperature sensors (up to four for 667HG-B, and nine -for NCT6775F and NCT6776F), five fan rotation speed sensors, ten analog voltage -sensors (only nine for the 627DHG), one VID (6 pins for the 627EHF/EHG, 8 pins -for the 627DHG and 667HG), alarms with beep warnings (control unimplemented), +W83627DHG, W83627DHG-P, W83627UHG, W83667HG, W83667HG-B, W83667HG-I +(NCT6775F), and NCT6776F super I/O chips. We will refer to them collectively +as Winbond chips. + +The chips implement 3 to 4 temperature sensors (9 for NCT6775F and NCT6776F), +2 to 5 fan rotation speed sensors, 8 to 10 analog voltage sensors, one VID +(except for 627UHG), alarms with beep warnings (control unimplemented), and some automatic fan regulation strategies (plus manual fan control mode). The temperature sensor sources on W82677HG-B, NCT6775F, and NCT6776F are @@ -86,17 +89,16 @@ follows: temp1 -> pwm1 temp2 -> pwm2 -temp3 -> pwm3 +temp3 -> pwm3 (not on 627UHG) prog -> pwm4 (not on 667HG and 667HG-B; the programmable setting is not supported by the driver) /sys files ---------- -name - this is a standard hwmon device entry. For the W83627EHF and W83627EHG, - it is set to "w83627ehf", for the W83627DHG it is set to "w83627dhg", - for the W83667HG and W83667HG-B it is set to "w83667hg", for NCT6775F it - is set to "nct6775", and for NCT6776F it is set to "nct6776". +name - this is a standard hwmon device entry, it contains the name of + the device (see the prefix in the list of supported devices at + the top of this file) pwm[1-4] - this file stores PWM duty cycle or DC value (fan speed) in range: 0 (stop) to 255 (full) diff --git a/Documentation/hwmon/zl6100 b/Documentation/hwmon/zl6100 new file mode 100644 index 0000000..c5e1a5b --- /dev/null +++ b/Documentation/hwmon/zl6100 @@ -0,0 +1,123 @@ +Kernel driver zl6100 +==================== + +Supported chips: + * Intersil / Zilker Labs ZL2004 + Prefix: 'zl2004' + Addresses scanned: - + Datasheet: http://www.intersil.com/data/fn/fn6847.pdf + * Intersil / Zilker Labs ZL2006 + Prefix: 'zl2006' + Addresses scanned: - + Datasheet: http://www.intersil.com/data/fn/fn6850.pdf + * Intersil / Zilker Labs ZL2008 + Prefix: 'zl2008' + Addresses scanned: - + Datasheet: http://www.intersil.com/data/fn/fn6859.pdf + * Intersil / Zilker Labs ZL2105 + Prefix: 'zl2105' + Addresses scanned: - + Datasheet: http://www.intersil.com/data/fn/fn6851.pdf + * Intersil / Zilker Labs ZL2106 + Prefix: 'zl2106' + Addresses scanned: - + Datasheet: http://www.intersil.com/data/fn/fn6852.pdf + * Intersil / Zilker Labs ZL6100 + Prefix: 'zl6100' + Addresses scanned: - + Datasheet: http://www.intersil.com/data/fn/fn6876.pdf + * Intersil / Zilker Labs ZL6105 + Prefix: 'zl6105' + Addresses scanned: - + Datasheet: http://www.intersil.com/data/fn/fn6906.pdf + +Author: Guenter Roeck <guenter.roeck@ericsson.com> + + +Description +----------- + +This driver supports hardware montoring for Intersil / Zilker Labs ZL6100 and +compatible digital DC-DC controllers. + +The driver is a client driver to the core PMBus driver. Please see +Documentation/hwmon/pmbus and Documentation.hwmon/pmbus-core for details +on PMBus client drivers. + + +Usage Notes +----------- + +This driver does not auto-detect devices. You will have to instantiate the +devices explicitly. Please see Documentation/i2c/instantiating-devices for +details. + +WARNING: Do not access chip registers using the i2cdump command, and do not use +any of the i2ctools commands on a command register used to save and restore +configuration data (0x11, 0x12, 0x15, 0x16, and 0xf4). The chips supported by +this driver interpret any access to those command registers (including read +commands) as request to execute the command in question. Unless write accesses +to those registers are protected, this may result in power loss, board resets, +and/or Flash corruption. Worst case, your board may turn into a brick. + + +Platform data support +--------------------- + +The driver supports standard PMBus driver platform data. + + +Module parameters +----------------- + +delay +----- + +Intersil/Zilker Labs DC-DC controllers require a minimum interval between I2C +bus accesses. According to Intersil, the minimum interval is 2 ms, though 1 ms +appears to be sufficient and has not caused any problems in testing. The problem +is known to affect all currently supported chips. For manual override, the +driver provides a writeable module parameter, 'delay', which can be used to set +the interval to a value between 0 and 65,535 microseconds. + + +Sysfs entries +------------- + +The following attributes are supported. Limits are read-write; all other +attributes are read-only. + +in1_label "vin" +in1_input Measured input voltage. +in1_min Minimum input voltage. +in1_max Maximum input voltage. +in1_lcrit Critical minumum input voltage. +in1_crit Critical maximum input voltage. +in1_min_alarm Input voltage low alarm. +in1_max_alarm Input voltage high alarm. +in1_lcrit_alarm Input voltage critical low alarm. +in1_crit_alarm Input voltage critical high alarm. + +in2_label "vout1" +in2_input Measured output voltage. +in2_lcrit Critical minumum output Voltage. +in2_crit Critical maximum output voltage. +in2_lcrit_alarm Critical output voltage critical low alarm. +in2_crit_alarm Critical output voltage critical high alarm. + +curr1_label "iout1" +curr1_input Measured output current. +curr1_lcrit Critical minimum output current. +curr1_crit Critical maximum output current. +curr1_lcrit_alarm Output current critical low alarm. +curr1_crit_alarm Output current critical high alarm. + +temp[12]_input Measured temperature. +temp[12]_min Minimum temperature. +temp[12]_max Maximum temperature. +temp[12]_lcrit Critical low temperature. +temp[12]_crit Critical high temperature. +temp[12]_min_alarm Chip temperature low alarm. +temp[12]_max_alarm Chip temperature high alarm. +temp[12]_lcrit_alarm Chip temperature critical low alarm. +temp[12]_crit_alarm Chip temperature critical high alarm. diff --git a/Documentation/hwspinlock.txt b/Documentation/hwspinlock.txt index 6996681..a903ee5 100644 --- a/Documentation/hwspinlock.txt +++ b/Documentation/hwspinlock.txt @@ -227,44 +227,62 @@ int hwspinlock_example2(void) 4. API for implementors - int hwspin_lock_register(struct hwspinlock *hwlock); + int hwspin_lock_register(struct hwspinlock_device *bank, struct device *dev, + const struct hwspinlock_ops *ops, int base_id, int num_locks); - to be called from the underlying platform-specific implementation, in - order to register a new hwspinlock instance. Should be called from - a process context (this function might sleep). + order to register a new hwspinlock device (which is usually a bank of + numerous locks). Should be called from a process context (this function + might sleep). Returns 0 on success, or appropriate error code on failure. - struct hwspinlock *hwspin_lock_unregister(unsigned int id); + int hwspin_lock_unregister(struct hwspinlock_device *bank); - to be called from the underlying vendor-specific implementation, in order - to unregister an existing (and unused) hwspinlock instance. + to unregister an hwspinlock device (which is usually a bank of numerous + locks). Should be called from a process context (this function might sleep). Returns the address of hwspinlock on success, or NULL on error (e.g. if the hwspinlock is sill in use). -5. struct hwspinlock +5. Important structs -This struct represents an hwspinlock instance. It is registered by the -underlying hwspinlock implementation using the hwspin_lock_register() API. +struct hwspinlock_device is a device which usually contains a bank +of hardware locks. It is registered by the underlying hwspinlock +implementation using the hwspin_lock_register() API. /** - * struct hwspinlock - vendor-specific hwspinlock implementation - * - * @dev: underlying device, will be used with runtime PM api - * @ops: vendor-specific hwspinlock handlers - * @id: a global, unique, system-wide, index of the lock. - * @lock: initialized and used by hwspinlock core - * @owner: underlying implementation module, used to maintain module ref count + * struct hwspinlock_device - a device which usually spans numerous hwspinlocks + * @dev: underlying device, will be used to invoke runtime PM api + * @ops: platform-specific hwspinlock handlers + * @base_id: id index of the first lock in this device + * @num_locks: number of locks in this device + * @lock: dynamically allocated array of 'struct hwspinlock' */ -struct hwspinlock { +struct hwspinlock_device { struct device *dev; const struct hwspinlock_ops *ops; - int id; + int base_id; + int num_locks; + struct hwspinlock lock[0]; +}; + +struct hwspinlock_device contains an array of hwspinlock structs, each +of which represents a single hardware lock: + +/** + * struct hwspinlock - this struct represents a single hwspinlock instance + * @bank: the hwspinlock_device structure which owns this lock + * @lock: initialized and used by hwspinlock core + * @priv: private data, owned by the underlying platform-specific hwspinlock drv + */ +struct hwspinlock { + struct hwspinlock_device *bank; spinlock_t lock; - struct module *owner; + void *priv; }; -The underlying implementation is responsible to assign the dev, ops, id and -owner members. The lock member, OTOH, is initialized and used by the hwspinlock -core. +When registering a bank of locks, the hwspinlock driver only needs to +set the priv members of the locks. The rest of the members are set and +initialized by the hwspinlock core itself. 6. Implementation callbacks diff --git a/Documentation/i2c/busses/i2c-i801 b/Documentation/i2c/busses/i2c-i801 index 2871fd5..99d4e44 100644 --- a/Documentation/i2c/busses/i2c-i801 +++ b/Documentation/i2c/busses/i2c-i801 @@ -20,6 +20,8 @@ Supported adapters: * Intel Patsburg (PCH) * Intel DH89xxCC (PCH) * Intel Panther Point (PCH) + * Intel Lynx Point (PCH) + * Intel Lynx Point-LP (PCH) Datasheets: Publicly available at the Intel website On Intel Patsburg and later chipsets, both the normal host SMBus controller diff --git a/Documentation/i2c/busses/i2c-piix4 b/Documentation/i2c/busses/i2c-piix4 index 475bb4a..0982e72 100644 --- a/Documentation/i2c/busses/i2c-piix4 +++ b/Documentation/i2c/busses/i2c-piix4 @@ -8,7 +8,7 @@ Supported adapters: Datasheet: Only available via NDA from ServerWorks * ATI IXP200, IXP300, IXP400, SB600, SB700 and SB800 southbridges Datasheet: Not publicly available - * AMD Hudson-2 + * AMD Hudson-2, ML, CZ Datasheet: Not publicly available * Standard Microsystems (SMSC) SLC90E66 (Victory66) southbridge Datasheet: Publicly available at the SMSC website http://www.smsc.com diff --git a/Documentation/i2c/smbus-protocol b/Documentation/i2c/smbus-protocol index 7c19d1a..49f5b68 100644 --- a/Documentation/i2c/smbus-protocol +++ b/Documentation/i2c/smbus-protocol @@ -88,6 +88,10 @@ byte. But this time, the data is a complete word (16 bits). S Addr Wr [A] Comm [A] S Addr Rd [A] [DataLow] A [DataHigh] NA P +Note the convenience function i2c_smbus_read_word_swapped is +available for reads where the two data bytes are the other way +around (not SMBus compliant, but very popular.) + SMBus Write Byte: i2c_smbus_write_byte_data() ============================================== @@ -108,6 +112,10 @@ specified through the Comm byte. S Addr Wr [A] Comm [A] DataLow [A] DataHigh [A] P +Note the convenience function i2c_smbus_write_word_swapped is +available for writes where the two data bytes are the other way +around (not SMBus compliant, but very popular.) + SMBus Process Call: i2c_smbus_process_call() ============================================= diff --git a/Documentation/i2c/ten-bit-addresses b/Documentation/i2c/ten-bit-addresses index e989070..cdfe139 100644 --- a/Documentation/i2c/ten-bit-addresses +++ b/Documentation/i2c/ten-bit-addresses @@ -1,22 +1,24 @@ The I2C protocol knows about two kinds of device addresses: normal 7 bit addresses, and an extended set of 10 bit addresses. The sets of addresses do not intersect: the 7 bit address 0x10 is not the same as the 10 bit -address 0x10 (though a single device could respond to both of them). You -select a 10 bit address by adding an extra byte after the address -byte: - S Addr7 Rd/Wr .... -becomes - S 11110 Addr10 Rd/Wr -S is the start bit, Rd/Wr the read/write bit, and if you count the number -of bits, you will see the there are 8 after the S bit for 7 bit addresses, -and 16 after the S bit for 10 bit addresses. +address 0x10 (though a single device could respond to both of them). -WARNING! The current 10 bit address support is EXPERIMENTAL. There are -several places in the code that will cause SEVERE PROBLEMS with 10 bit -addresses, even though there is some basic handling and hooks. Also, -almost no supported adapter handles the 10 bit addresses correctly. +I2C messages to and from 10-bit address devices have a different format. +See the I2C specification for the details. -As soon as a real 10 bit address device is spotted 'in the wild', we -can and will add proper support. Right now, 10 bit address devices -are defined by the I2C protocol, but we have never seen a single device -which supports them. +The current 10 bit address support is minimal. It should work, however +you can expect some problems along the way: +* Not all bus drivers support 10-bit addresses. Some don't because the + hardware doesn't support them (SMBus doesn't require 10-bit address + support for example), some don't because nobody bothered adding the + code (or it's there but not working properly.) Software implementation + (i2c-algo-bit) is known to work. +* Some optional features do not support 10-bit addresses. This is the + case of automatic detection and instantiation of devices by their, + drivers, for example. +* Many user-space packages (for example i2c-tools) lack support for + 10-bit addresses. + +Note that 10-bit address devices are still pretty rare, so the limitations +listed above could stay for a long time, maybe even forever if nobody +needs them to be fixed. diff --git a/Documentation/i2o/ioctl b/Documentation/i2o/ioctl index 1e77fac..22ca53a 100644 --- a/Documentation/i2o/ioctl +++ b/Documentation/i2o/ioctl @@ -110,7 +110,7 @@ V. Getting Logical Configuration Table ENOBUFS Buffer not large enough. If this occurs, the required buffer length is written into *(lct->reslen) -VI. Settting Parameters +VI. Setting Parameters SYNOPSIS diff --git a/Documentation/input/elantech.txt b/Documentation/input/elantech.txt index db798af..e1ae127 100644 --- a/Documentation/input/elantech.txt +++ b/Documentation/input/elantech.txt @@ -16,15 +16,28 @@ Contents 1. Introduction 2. Extra knobs - 3. Hardware version 1 - 3.1 Registers - 3.2 Native relative mode 4 byte packet format - 3.3 Native absolute mode 4 byte packet format - 4. Hardware version 2 + 3. Differentiating hardware versions + 4. Hardware version 1 4.1 Registers - 4.2 Native absolute mode 6 byte packet format - 4.2.1 One finger touch - 4.2.2 Two finger touch + 4.2 Native relative mode 4 byte packet format + 4.3 Native absolute mode 4 byte packet format + 5. Hardware version 2 + 5.1 Registers + 5.2 Native absolute mode 6 byte packet format + 5.2.1 Parity checking and packet re-synchronization + 5.2.2 One/Three finger touch + 5.2.3 Two finger touch + 6. Hardware version 3 + 6.1 Registers + 6.2 Native absolute mode 6 byte packet format + 6.2.1 One/Three finger touch + 6.2.2 Two finger touch + 7. Hardware version 4 + 7.1 Registers + 7.2 Native absolute mode 6 byte packet format + 7.2.1 Status packet + 7.2.2 Head packet + 7.2.3 Motion packet @@ -375,7 +388,7 @@ For all the other ones, there are just a few constant bits: In case an error is detected, all the packets are shifted by one (and packet[0] is discarded). -5.2.1 One/Three finger touch +5.2.2 One/Three finger touch ~~~~~~~~~~~~~~~~ byte 0: @@ -384,19 +397,19 @@ byte 0: n1 n0 w3 w2 . . R L L, R = 1 when Left, Right mouse button pressed - n1..n0 = numbers of fingers on touchpad + n1..n0 = number of fingers on touchpad byte 1: bit 7 6 5 4 3 2 1 0 - p7 p6 p5 p4 . x10 x9 x8 + p7 p6 p5 p4 x11 x10 x9 x8 byte 2: bit 7 6 5 4 3 2 1 0 x7 x6 x5 x4 x3 x2 x1 x0 - x10..x0 = absolute x value (horizontal) + x11..x0 = absolute x value (horizontal) byte 3: @@ -420,7 +433,7 @@ byte 3: byte 4: bit 7 6 5 4 3 2 1 0 - p3 p1 p2 p0 . . y9 y8 + p3 p1 p2 p0 y11 y10 y9 y8 p7..p0 = pressure (not EF113) @@ -429,10 +442,10 @@ byte 5: bit 7 6 5 4 3 2 1 0 y7 y6 y5 y4 y3 y2 y1 y0 - y9..y0 = absolute y value (vertical) + y11..y0 = absolute y value (vertical) -4.2.2 Two finger touch +5.2.3 Two finger touch ~~~~~~~~~~~~~~~~ Note that the two pairs of coordinates are not exactly the coordinates of the @@ -446,7 +459,7 @@ byte 0: n1 n0 ay8 ax8 . . R L L, R = 1 when Left, Right mouse button pressed - n1..n0 = numbers of fingers on touchpad + n1..n0 = number of fingers on touchpad byte 1: @@ -480,3 +493,256 @@ byte 5: by7 by8 by5 by4 by3 by2 by1 by0 by8..by0 = upper-right finger absolute y value + +///////////////////////////////////////////////////////////////////////////// + +6. Hardware version 3 + ================== + +6.1 Registers + ~~~~~~~~~ +* reg_10 + + bit 7 6 5 4 3 2 1 0 + 0 0 0 0 R F T A + + A: 1 = enable absolute tracking + T: 1 = enable two finger mode auto correct + F: 1 = disable ABS Position Filter + R: 1 = enable real hardware resolution + +6.2 Native absolute mode 6 byte packet format + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +1 and 3 finger touch shares the same 6-byte packet format, except that +3 finger touch only reports the position of the center of all three fingers. + +Firmware would send 12 bytes of data for 2 finger touch. + +Note on debounce: +In case the box has unstable power supply or other electricity issues, or +when number of finger changes, F/W would send "debounce packet" to inform +driver that the hardware is in debounce status. +The debouce packet has the following signature: + byte 0: 0xc4 + byte 1: 0xff + byte 2: 0xff + byte 3: 0x02 + byte 4: 0xff + byte 5: 0xff +When we encounter this kind of packet, we just ignore it. + +6.2.1 One/Three finger touch + ~~~~~~~~~~~~~~~~~~~~~~ + +byte 0: + + bit 7 6 5 4 3 2 1 0 + n1 n0 w3 w2 0 1 R L + + L, R = 1 when Left, Right mouse button pressed + n1..n0 = number of fingers on touchpad + +byte 1: + + bit 7 6 5 4 3 2 1 0 + p7 p6 p5 p4 x11 x10 x9 x8 + +byte 2: + + bit 7 6 5 4 3 2 1 0 + x7 x6 x5 x4 x3 x2 x1 x0 + + x11..x0 = absolute x value (horizontal) + +byte 3: + + bit 7 6 5 4 3 2 1 0 + 0 0 w1 w0 0 0 1 0 + + w3..w0 = width of the finger touch + +byte 4: + + bit 7 6 5 4 3 2 1 0 + p3 p1 p2 p0 y11 y10 y9 y8 + + p7..p0 = pressure + +byte 5: + + bit 7 6 5 4 3 2 1 0 + y7 y6 y5 y4 y3 y2 y1 y0 + + y11..y0 = absolute y value (vertical) + +6.2.2 Two finger touch + ~~~~~~~~~~~~~~~~ + +The packet format is exactly the same for two finger touch, except the hardware +sends two 6 byte packets. The first packet contains data for the first finger, +the second packet has data for the second finger. So for two finger touch a +total of 12 bytes are sent. + +///////////////////////////////////////////////////////////////////////////// + +7. Hardware version 4 + ================== + +7.1 Registers + ~~~~~~~~~ +* reg_07 + + bit 7 6 5 4 3 2 1 0 + 0 0 0 0 0 0 0 A + + A: 1 = enable absolute tracking + +7.2 Native absolute mode 6 byte packet format + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +v4 hardware is a true multitouch touchpad, capable of tracking up to 5 fingers. +Unfortunately, due to PS/2's limited bandwidth, its packet format is rather +complex. + +Whenever the numbers or identities of the fingers changes, the hardware sends a +status packet to indicate how many and which fingers is on touchpad, followed by +head packets or motion packets. A head packet contains data of finger id, finger +position (absolute x, y values), width, and pressure. A motion packet contains +two fingers' position delta. + +For example, when status packet tells there are 2 fingers on touchpad, then we +can expect two following head packets. If the finger status doesn't change, +the following packets would be motion packets, only sending delta of finger +position, until we receive a status packet. + +One exception is one finger touch. when a status packet tells us there is only +one finger, the hardware would just send head packets afterwards. + +7.2.1 Status packet + ~~~~~~~~~~~~~ + +byte 0: + + bit 7 6 5 4 3 2 1 0 + . . . . 0 1 R L + + L, R = 1 when Left, Right mouse button pressed + +byte 1: + + bit 7 6 5 4 3 2 1 0 + . . . ft4 ft3 ft2 ft1 ft0 + + ft4 ft3 ft2 ft1 ft0 ftn = 1 when finger n is on touchpad + +byte 2: not used + +byte 3: + + bit 7 6 5 4 3 2 1 0 + . . . 1 0 0 0 0 + + constant bits + +byte 4: + + bit 7 6 5 4 3 2 1 0 + p . . . . . . . + + p = 1 for palm + +byte 5: not used + +7.2.2 Head packet + ~~~~~~~~~~~ + +byte 0: + + bit 7 6 5 4 3 2 1 0 + w3 w2 w1 w0 0 1 R L + + L, R = 1 when Left, Right mouse button pressed + w3..w0 = finger width (spans how many trace lines) + +byte 1: + + bit 7 6 5 4 3 2 1 0 + p7 p6 p5 p4 x11 x10 x9 x8 + +byte 2: + + bit 7 6 5 4 3 2 1 0 + x7 x6 x5 x4 x3 x2 x1 x0 + + x11..x0 = absolute x value (horizontal) + +byte 3: + + bit 7 6 5 4 3 2 1 0 + id2 id1 id0 1 0 0 0 1 + + id2..id0 = finger id + +byte 4: + + bit 7 6 5 4 3 2 1 0 + p3 p1 p2 p0 y11 y10 y9 y8 + + p7..p0 = pressure + +byte 5: + + bit 7 6 5 4 3 2 1 0 + y7 y6 y5 y4 y3 y2 y1 y0 + + y11..y0 = absolute y value (vertical) + +7.2.3 Motion packet + ~~~~~~~~~~~~~ + +byte 0: + + bit 7 6 5 4 3 2 1 0 + id2 id1 id0 w 0 1 R L + + L, R = 1 when Left, Right mouse button pressed + id2..id0 = finger id + w = 1 when delta overflows (> 127 or < -128), in this case + firmware sends us (delta x / 5) and (delta y / 5) + +byte 1: + + bit 7 6 5 4 3 2 1 0 + x7 x6 x5 x4 x3 x2 x1 x0 + + x7..x0 = delta x (two's complement) + +byte 2: + + bit 7 6 5 4 3 2 1 0 + y7 y6 y5 y4 y3 y2 y1 y0 + + y7..y0 = delta y (two's complement) + +byte 3: + + bit 7 6 5 4 3 2 1 0 + id2 id1 id0 1 0 0 1 0 + + id2..id0 = finger id + +byte 4: + + bit 7 6 5 4 3 2 1 0 + x7 x6 x5 x4 x3 x2 x1 x0 + + x7..x0 = delta x (two's complement) + +byte 5: + + bit 7 6 5 4 3 2 1 0 + y7 y6 y5 y4 y3 y2 y1 y0 + + y7..y0 = delta y (two's complement) + + byte 0 ~ 2 for one finger + byte 3 ~ 5 for another diff --git a/Documentation/input/input.txt b/Documentation/input/input.txt index b93c084..b3d6787 100644 --- a/Documentation/input/input.txt +++ b/Documentation/input/input.txt @@ -111,7 +111,7 @@ LCDs and many other purposes. The monitor and speaker controls should be easy to add to the hid/input interface, but for the UPSs and LCDs it doesn't make much sense. For this, -the hiddev interface was designed. See Documentation/usb/hiddev.txt +the hiddev interface was designed. See Documentation/hid/hiddev.txt for more information about it. The usage of the usbhid module is very simple, it takes no parameters, diff --git a/Documentation/input/multi-touch-protocol.txt b/Documentation/input/multi-touch-protocol.txt index 71536e7..543101c 100644 --- a/Documentation/input/multi-touch-protocol.txt +++ b/Documentation/input/multi-touch-protocol.txt @@ -65,6 +65,20 @@ the full state of each initiated contact has to reside in the receiving end. Upon receiving an MT event, one simply updates the appropriate attribute of the current slot. +Some devices identify and/or track more contacts than they can report to the +driver. A driver for such a device should associate one type B slot with each +contact that is reported by the hardware. Whenever the identity of the +contact associated with a slot changes, the driver should invalidate that +slot by changing its ABS_MT_TRACKING_ID. If the hardware signals that it is +tracking more contacts than it is currently reporting, the driver should use +a BTN_TOOL_*TAP event to inform userspace of the total number of contacts +being tracked by the hardware at that moment. The driver should do this by +explicitly sending the corresponding BTN_TOOL_*TAP event and setting +use_count to false when calling input_mt_report_pointer_emulation(). +The driver should only advertise as many slots as the hardware can report. +Userspace can detect that a driver can report more total contacts than slots +by noting that the largest supported BTN_TOOL_*TAP event is larger than the +total number of type B slots reported in the absinfo for the ABS_MT_SLOT axis. Protocol Example A ------------------ diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt index 3a46e36..54078ed 100644 --- a/Documentation/ioctl/ioctl-number.txt +++ b/Documentation/ioctl/ioctl-number.txt @@ -292,6 +292,7 @@ Code Seq#(hex) Include File Comments <mailto:buk@buks.ipn.de> 0xA0 all linux/sdp/sdp.h Industrial Device Project <mailto:kenji@bitgate.com> +0xA2 00-0F arch/tile/include/asm/hardwall.h 0xA3 80-8F Port ACL in development: <mailto:tlewis@mindspring.com> 0xA3 90-9F linux/dtlk.h @@ -301,6 +302,7 @@ Code Seq#(hex) Include File Comments <mailto:rusty@rustcorp.com.au> 0xAE all linux/kvm.h Kernel-based Virtual Machine <mailto:kvm@vger.kernel.org> +0xAF 00-1F linux/fsl_hypervisor.h Freescale hypervisor 0xB0 all RATIO devices in development: <mailto:vgo@ratio.de> 0xB1 00-1F PPPoX <mailto:mostrows@styx.uwaterloo.ca> @@ -317,4 +319,6 @@ Code Seq#(hex) Include File Comments <mailto:thomas@winischhofer.net> 0xF4 00-1F video/mbxfb.h mbxfb <mailto:raph@8d.com> +0xF6 all LTTng Linux Trace Toolkit Next Generation + <mailto:mathieu.desnoyers@efficios.com> 0xFD all linux/dm-ioctl.h diff --git a/Documentation/isdn/README.HiSax b/Documentation/isdn/README.HiSax index 99e87a6..b1a573c 100644 --- a/Documentation/isdn/README.HiSax +++ b/Documentation/isdn/README.HiSax @@ -506,7 +506,7 @@ to e.g. the Internet: <ISDN subsystem - ISDN support -- HiSax> make clean; make zImage; make modules; make modules_install 2. Install the new kernel - cp /usr/src/linux/arch/i386/boot/zImage /etc/kernel/linux.isdn + cp /usr/src/linux/arch/x86/boot/zImage /etc/kernel/linux.isdn vi /etc/lilo.conf <add new kernel in the bootable image section> lilo diff --git a/Documentation/ja_JP/HOWTO b/Documentation/ja_JP/HOWTO index 050d37f..46ed735 100644 --- a/Documentation/ja_JP/HOWTO +++ b/Documentation/ja_JP/HOWTO @@ -315,7 +315,7 @@ Andrew Morton が Linux-kernel メーリングリストにカーネルリリー もし、2.6.x.y カーネルが存在しない場合には、番号が一番大きい 2.6.x が 最新の安定版カーネルです。 -2.6.x.y は "stable" チーム <stable@kernel.org> でメンテされており、必 +2.6.x.y は "stable" チーム <stable@vger.kernel.org> でメンテされており、必 要に応じてリリースされます。通常のリリース期間は 2週間毎ですが、差し迫っ た問題がなければもう少し長くなることもあります。セキュリティ関連の問題 の場合はこれに対してだいたいの場合、すぐにリリースがされます。 diff --git a/Documentation/ja_JP/SubmitChecklist b/Documentation/ja_JP/SubmitChecklist index 2df4576..cb5507b 100644 --- a/Documentation/ja_JP/SubmitChecklist +++ b/Documentation/ja_JP/SubmitChecklist @@ -68,7 +68,7 @@ Linux カーネルパッチ投稿者向けチェックリスト 12: CONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT, CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES, CONFIG_DEBUG_SPINLOCK, - CONFIG_DEBUG_SPINLOCK_SLEEP これら全てを同時に有効にして動作確認を + CONFIG_DEBUG_ATOMIC_SLEEP これら全てを同時に有効にして動作確認を 行ってください。 13: CONFIG_SMP, CONFIG_PREEMPT を有効にした場合と無効にした場合の両方で diff --git a/Documentation/ja_JP/SubmittingPatches b/Documentation/ja_JP/SubmittingPatches index f107c83..97f78dd 100644 --- a/Documentation/ja_JP/SubmittingPatches +++ b/Documentation/ja_JP/SubmittingPatches @@ -11,16 +11,18 @@ for non English (read: Japanese) speakers and is not intended as a fork. So if you have any comments or updates of this file, please try to update the original English file first. -Last Updated: 2007/10/24 +Last Updated: 2011/06/09 + ================================== これは、 -linux-2.6.23/Documentation/SubmittingPatches の和訳 +linux-2.6.39/Documentation/SubmittingPatches の和訳 です。 翻訳団体： JF プロジェクト < http://www.linux.or.jp/JF/ > -翻訳日： 2007/10/17 +翻訳日： 2011/06/09 翻訳者： Keiichi Kii <k-keiichi at bx dot jp dot nec dot com> 校正者： Masanari Kobayashi さん <zap03216 at nifty dot ne dot jp> Matsukura さん <nbh--mats at nifty dot com> + Takeshi Hamasaki さん <hmatrjp at users dot sourceforge dot jp> ================================== Linux カーネルに変更を加えるための Howto @@ -97,7 +99,7 @@ Quilt: http://savannah.nongnu.org/projects/quilt Andrew Morton's patch scripts: -http://userweb.kernel.org/~akpm/stuff/tpp.txt +http://userweb.kernel.org/~akpm/stuff/patch-scripts.tar.gz このリンクの先のスクリプトの代わりとして、quilt がパッチマネジメント ツールとして推奨されています(上のリンクを見てください)。 @@ -109,9 +111,25 @@ http://userweb.kernel.org/~akpm/stuff/tpp.txt 「ドライバー X に対するバグフィックス」あるいは「このパッチはサブシス テム X に対する更新を含んでいます。どうか取り入れてください。」などです。 +パッチの説明を Linux カーネルのソースコードマネジメントシステム「 git 」の +コミットログとして簡単に引用できる形で書けば、メンテナから感謝されるでしょう。 +以下の #15 を見てください。 + 説明が長くなりだしたのであれば、おそらくそれはパッチを分ける必要がある という兆候です。次の #3 を見てください。 +パッチ(シリーズ)を(再)投稿する時、十分なパッチの説明とそのパッチが必要な理由を +パッチに含めてください。ただ「これはパッチ(シリーズ)のバージョン N」とだけ +書かないでください。そして、パッチをマージする人にパッチの説明を探させそれを +パッチに追記させるため、過去のバージョンのパッチやそのパッチの URL を参照する +手間をかけさせないでください。 +つまり、パッチシリーズとその説明は一緒にあるべきです。これはパッチをマージする +人、レビューする人、どちらのためにもなります。レビューする人の中には、おそらく +過去のバージョンのパッチを受け取ってもいない人がいます。 + +登録済みのバグエントリを修正するパッチであれば、そのバグエントリを示すバグ ID +や URL を明記してください。 + 3) パッチの分割 意味のあるひとまとまりごとに変更を個々のパッチファイルに分けてください。 @@ -141,7 +159,7 @@ http://userweb.kernel.org/~akpm/stuff/tpp.txt 拒否されるでしょう。 あなたはパッチを投稿する前に最低限パッチスタイルチェッカー -( scripts/patchcheck.pl )を利用してパッチをチェックすべきです。 +( scripts/checkpatch.pl )を利用してパッチをチェックすべきです。 もしパッチに違反がのこっているならば、それらの全てについてあなたは正当な 理由を示せるようにしておく必要があります。 @@ -192,13 +210,13 @@ VGER.KERNEL.ORG でホスティングされているメーリングリストの 情報がマニュアルページの中に入ってくるように、変更が起きたという 通知を送ってください。 -たとえ、メンテナが #4 で反応がなかったとしても、メンテナのコードに変更を +たとえ、メンテナが #5 で反応がなかったとしても、メンテナのコードに変更を 加えたときには、いつもメンテナに CC するのを忘れないようにしてください。 -小さなパッチであれば、Adrian Bunk が管理している Trivial Patch Monkey -(ちょっとしたパッチを集めている)<trivial@kernel.org>に CC してもいい -です。ちょっとしたパッチとは以下のルールのどれか1つを満たしていなけ -ればなりません。 +小さなパッチであれば、Trivial Patch Monkey(ちょっとしたパッチを集めている) +<trivial@kernel.org>に CC してもいいです。その現管理者については MAINTAINERS +ファイルを見てください。ちょっとしたパッチとは以下のルールのどれか1つを満たして +いなければなりません。 ・ドキュメントのスペルミスの修正 ・grep(1) コマンドによる検索を困難にしているスペルの修正 ・コンパイル時の警告の修正(無駄な警告が散乱することは好ましくないた @@ -210,7 +228,6 @@ VGER.KERNEL.ORG でホスティングされているメーリングリストの ・移植性のないコードから移植性のあるコードへの置き換え(小さい範囲で あればアーキテクチャ特有のことでも他の人がコピーできます) ・作者やメンテナによる修正(すなわち patch monkey の再転送モード) -EMAIL: <trivial@kernel.org> 7) MIME やリンクや圧縮ファイルや添付ファイルではなくプレインテキストのみ @@ -233,26 +250,15 @@ MIME 形式の添付ファイルは Linus に手間を取らせることにな 例外：お使いの電子メールクライアントがパッチをめちゃくちゃにするので あれば、誰かが MIME 形式のパッチを再送するよう求めるかもしれません。 -警告： Mozilla のような特定の電子メールクライアントは電子メールの -ヘッダに以下のものを付加して送ります。 ----- message header ---- -Content-Type: text/plain; charset=us-ascii; format=flowed ----- message header ---- -問題は、「 format=flowed 」が付いた電子メールを特定の受信側の電子メール -クライアントがタブをスペースに置き換えるというような変更をすることです。 -したがって送られてきたパッチは壊れているように見えるでしょう。 - -これを修正するには、mozilla の defaults/pref/mailnews.js ファイルを -以下のように修正します。 -pref("mailnews.send_plaintext_flowed", false); // RFC 2646======= -pref("mailnews.display.disable_format_flowed_support", true); +余計な変更を加えずにあなたのパッチを送信するための電子メールクライアントの設定 +のヒントについては Documentation/email-clients.txt を参照してください。 8) 電子メールのサイズ パッチを Linus へ送るときは常に #7 の手順に従ってください。 大きなパッチはメーリングリストやメンテナにとって不親切です。パッチが -未圧縮で 40KB を超えるようであるなら、インターネット上のアクセス可能な +未圧縮で 300KB を超えるようであるなら、インターネット上のアクセス可能な サーバに保存し、保存場所を示す URL を伝えるほうが適切です。 9) カーネルバージョンの明記 @@ -324,7 +330,7 @@ Linus や LKML への大量の電子メールのために、サブジェクト (c) 本寄与は(a)、(b)、(c)を証明する第3者から私へ直接提供された ものであり、私はそれに変更を加えていない。 - (d) 私はこのプロジェクトと本寄与が公のものであることに理解及び同意す + (d) 私はこのプロジェクトと本寄与が公のものであることに理解及び同意す る。同時に、関与した記録(投稿の際の全ての個人情報と sign-off を 含む)が無期限に保全されることと、当該プロジェクト又は関連する オープンソースライセンスに沿った形で再配布されることに理解及び @@ -340,7 +346,51 @@ Linus や LKML への大量の電子メールのために、サブジェクト 無視されますが、あなたはそのタグを社内の手続きに利用したり、sign-off に特別 な情報を示したりすることができます。 -13) いつ Acked-by: を使うのか +あなたがサブシステムまたはブランチのメンテナであれば、受け取ったパッチを自身の +ツリーにマージするために、わずかに変更が必要となる場合があります。なぜなら +あなたのツリーの中のコードと投稿者のツリーの中のコードは同一ではないためです。 +もし、あなたが厳密に上記ルール(c)にこだわるのであれば、投稿者に再度差分を +とるよう依頼すべきです。しかし、これは時間とエネルギーを非生産的に浪費する +ことになります。ルール(b)はあなたにコードを修正する権利を与えてくれます。 +しかし、投稿者のコードを修正し、その修正によるバグを投稿者に押し付けてしまう +ことはとても失礼なことです。この問題を解決するために、末尾の投稿者の +Signed-off-by とあなたがその末尾に追加する Signed-off-by の間に、修正を +加えたことを示す1行を追加することが推奨されています。 +(その1行の書き方に)決まりはありませんが、大括弧の中に電子メールアドレスや氏名 +と修正内容を記載するやり方は目につきやすく、最終段階での変更の責任があなたに +あることを明確にするのに十分な方法のようです。例えば、 + + Signed-off-by: Random J Developer <random@developer.example.org> + [lucky@maintainer.example.org: struct foo moved from foo.c to foo.h] + Signed-off-by: Lucky K Maintainer <lucky@maintainer.example.org> + +あなたが安定版のブランチを管理しており、作成者のクレジット、変更の追跡、 +修正のマージ、と同時に苦情からの投稿者の保護を行いたい場合、この慣習は特に +有用となります。いかなる事情があってもチェンジログに出てくる作成者の +アイデンティティ情報(From ヘッダ)は変更できないことに注意してください。 + +バックポートする人のための特別な注意事項。追跡を容易に行うために、コミット +メッセージのトップ(サブジェクト行のすぐ後)にパッチの起源を示す情報を記述する +ことは一般的で有用な慣習です。例えば、これは 2.6-stable ツリーでの一例です。 + + Date: Tue May 13 19:10:30 2008 +0000 + + SCSI: libiscsi regression in 2.6.25: fix nop timer handling + + commit 4cf1043593db6a337f10e006c23c69e5fc93e722 upstream + +そして、これは 2.4 ツリーでの一例です。 + + Date: Tue May 13 22:12:27 2008 +0200 + + wireless, airo: waitbusy() won't delay + + [backport of 2.6 commit b7acbdfbd1f277c1eb23f344f899cfa4cd0bf36a] + +どんな形式であれ、この情報はあなたのツリーを追跡する人やあなたのツリーのバグを +解決しようとしている人にとって価値のある支援となります。 + +13) いつ Acked-by: と Cc: を使うのか 「 Signed-off-by: 」タグはその署名者がパッチの開発に関わっていたことやパッチ の伝播パスにいたことを示しています。 @@ -354,7 +404,7 @@ Linus や LKML への大量の電子メールのために、サブジェクト Acked-by: は Signed-off-by: のように公式なタグではありません。それはメンテナが 少なくともパッチをレビューし、同意を示しているという記録です。そのような -ことからパッチの統合者がメンテナの「うん、良いと思うよ」という発言を +ことからパッチをマージする人がメンテナの「うん、良いと思うよ」という発言を Acked-by: へ置き換えることがあります。 Acked-by: が必ずしもパッチ全体の承認を示しているわけではありません。例えば、 @@ -364,7 +414,62 @@ Acked-by: が必ずしもパッチ全体の承認を示しているわけでは この点は、ご自分で判断してください。(その Acked-by: が)疑わしい場合は、 メーリングリストアーカイブの中の大元の議論を参照すべきです。 -14) 標準的なパッチのフォーマット +パッチにコメントする機会を持っていたが、その時にコメントしなかった人がいれば、 +その人を指す「Cc:」タグを任意で追加してもかまいません。これは指定された人からの +明確なアクションなしに付与できる唯一のタグです。 +このタグはパッチに関心があると思われる人達がそのパッチの議論に含まれていたこと +を明文化します。 + +14) Reported-by と Tested-by: と Reviewed-by: の利用 + +他の誰かによって報告された問題を修正するパッチであれば、問題報告者という寄与を +クレジットするために、Reported-by: タグを追加することを検討してください。 +こまめにバグ報告者をクレジットしていくことで、うまくいけばその人たちが将来再び +コミュニティの力となってくれるでしょう。 +ただし、報告者の許可無くこのタグを追加しないように注意してください。特に、 +問題が公の場で報告されていなかったのであれば。 + +Tested-by: タグはタグで指定された人によって(ある環境下で)パッチのテストに成功 +していることを示します。このタグはメンテナにテストが実施済みであることを +知らせ、将来の関連パッチのテスト協力者を見つける方法を提供し、テスト実施者に +対するクレジットを保証します。 + +Reviewed-by: タグは、それとは異なり、下記のレビューア宣言の下にレビューされ、 +受け入れ可能とみなされたパッチであることを示します。 + + レビューアによる監督宣言 + + 私は Reviewed-by: タグを提示することによって、以下のことを明言する。 + + (a) 私はメインラインカーネルへの統合に向け、その妥当性及び「即応性 + (訳注)」を検証し、技術的側面からパッチをレビュー済みである。 + + 訳注: + 「即応性」の原文は "readiness"。 + パッチが十分な品質を持っており、メインラインカーネルへの統合を即座に + 行うことができる状態であるかどうかを "readiness" という単語で表現 + している。 + + (b) パッチに関するあらゆる問題、懸念、あるいは、疑問は投稿者へ伝達済み + である。私はそれらのコメントに対する投稿者の返答に満足している。 + + (c) 投稿に伴い改良されるコードがある一方で、現時点で、私は(1)それが + カーネルにとって価値のある変更であること、そして、(2)統合に際して + 議論になり得るような問題はないものと確信している。 + + (d) 私はパッチをレビューし適切であると確信している一方で、あらゆる + 状況においてその宣言した目的や機能が正しく実現することに関して、 + いかなる保証もしない(特にどこかで明示しない限り)。 + +Reviewd-by タグはそのパッチがカーネルに対して適切な修正であって、深刻な技術的 +問題を残していないという意見の宣言です。興味のあるレビューアは誰でも(レビュー +作業を終えたら)パッチに対して Reviewed-by タグを提示できます。このタグは +レビューアの寄与をクレジットする働き、レビューの進捗の度合いをメンテナに +知らせる働きを持ちます。そのパッチの領域に詳しく、そして、しっかりとした +レビューを実施したレビューアによって提供される時、Reviewed-by: タグがあなたの +パッチをカーネルにマージする可能性を高めるでしょう。 + +15) 標準的なパッチのフォーマット 標準的なパッチのサブジェクトは以下のとおりです。 @@ -396,18 +501,37 @@ Acked-by: が必ずしもパッチ全体の承認を示しているわけでは 電子メールのサブジェクト内のサブシステム表記は、パッチが適用される 分野またはサブシステムを識別できるようにすべきです。 -電子メールのサブジェクトの「概要の言い回し」はそのパッチの概要を正確 -に表現しなければなりません。「概要の言い回し」をファイル名にしてはい -けません。一連のパッチ中でそれぞれのパッチは同じ「概要の言い回し」を -使ってはいけません(「一連のパッチ」とは順序付けられた関連のある複数の +電子メールのサブジェクトの「summary phrase」はそのパッチの概要を正確 +に表現しなければなりません。「summary phrase」をファイル名にしてはい +けません。パッチシリーズ中でそれぞれのパッチは同じ「summary phrase」を +使ってはいけません(「パッチシリーズ」とは順序付けられた関連のある複数の パッチ群です)。 -あなたの電子メールの「概要の言い回し」がそのパッチにとって世界で唯 -一の識別子になるように心がけてください。「概要の言い回し」は git の -チェンジログの中へずっと伝播していきます。「概要の言い回し」は、開 -発者が後でパッチを参照するために議論の中で利用するかもしれません。 -人々はそのパッチに関連した議論を読むために「概要の言い回し」を使って -google で検索したがるでしょう。 +あなたの電子メールの「summary phrase」がそのパッチにとって世界で唯一の識別子に +なるように心がけてください。「summary phrase」は git のチェンジログの中へ +ずっと伝播していきます。「summary phrase」は、開発者が後でパッチを参照する +ために議論の中で利用するかもしれません。 +人々はそのパッチに関連した議論を読むために「summary phrase」を使って google で +検索したがるでしょう。それはまた2、3ヶ月あとで、人々が「gitk」や +「git log --oneline」のようなツールを使用して何千ものパッチに目を通す時、 +唯一目にとまる情報となるでしょう。 + +これらの理由のため、「summary phrase」はなぜパッチが必要であるか、パッチが何を +変更するかの2つの情報をせいぜい70〜75文字で表現していなければなりません。 +「summary phrase」は簡潔であり説明的である表現を目指しつつ、うまく +まとめられている概要となるべきです。 + +「summary phrase」は「Subject: [PATCH tag] <summary phrase>」のように、 +大括弧で閉じられたタグを接頭辞として付加してもかまいません。このタグは +「summary phrase」の一部とは考えませんが、パッチをどのように取り扱うべきかを +表現します。 +一般的には「v1, v2, v3」のようなバージョン情報を表すタグ(過去のパッチに対する +コメントを反映するために複数のバージョンのパッチが投稿されているのであれば)、 +「RFC」のようなコメントを要求するタグが挙げられます。パッチシリーズとして4つの +パッチがあれば、個々のパッチに「1/4, 2/4, 3/4, 4/4」のように番号を付けても +かまいません。これは開発者がパッチを適用する順番を確実に把握するためです。 +そして、開発者がパッチシリーズの中のすべてのパッチをもらさずレビュー或いは +適用するのを保証するためです。 サブジェクトの例を二つ @@ -426,7 +550,12 @@ google で検索したがるでしょう。 説明本体は無期限のソースのチェンジログにコミットされます。なので、説明 本体はそのパッチに至った議論の詳細を忘れているある程度の技量を持っている人 -がその詳細を思い出すことができるものでなければなりません。 +がその詳細を思い出すことができるものでなければなりません。パッチが対処する +障害の症状(カーネルログメッセージや oops メッセージ等)を記載することは問題に +対処可能なパッチを求めてコミットログを検索する人々にとって特に有用です。 +パッチがコンパイル問題を解決するのであれば、そのパッチを探している人が見つける +ことができる情報だけで十分であり、コンパイル時の全てのエラーを含める必要は +ありません。「summary phrase」と同様に、簡潔であり説明的であることが重要です。 「 --- 」マーカー行はパッチ処理ツールに対して、チェンジログメッセージの終端 部分を認識させるという重要な役目を果たします。 @@ -436,14 +565,46 @@ google で検索したがるでしょう。 追加され何行消されたかを示すものです。diffstat コマンドは特に大きなパッチに おいて役立ちます。その時点でだけ又はメンテナにとってのみ関係のあるコメント は無期限に保存されるチェンジログにとって適切ではありません。そのため、この -ようなコメントもマーカー行の後に書かれるべきです。ファイル名はカーネルソー -スツリーのトップディレクトリからの表記でリストされるため、横方向のスペース -をとり過ぎないように、diffstat コマンドにオプション「 -p 1 -w 70 」を指定し -てください(インデントを含めてちょうど80列に合うでしょう)。 +ようなコメントもマーカー行の後に書かれるべきです。 +このようなコメントの良い例として、v1 と v2 のバージョン間で何が変更されたかを +表す「パッチの変更履歴」が挙げられます。 + +「 --- 」マーカー行の後に diffstat コマンドの結果を含めるのであれば、ファイル +名はカーネルソースツリーのトップディレクトリからの表記で列記されるため、横方向 +のスペースをとり過ぎないように、diffstat コマンドにオプション「 -p 1 -w 70 」 +を指定してください(インデントを含めてちょうど80列に合うでしょう)。 適切なパッチのフォーマットの詳細についてはセクション3の参考文献を参照して ください。 +16) 「git pull」要求の送り方(Linus の電子メールから) + +間違ったブランチから引っ張るのを防ぐために、git リポジトリのアドレスと +ブランチ名を同じ行に1行で記載してください。そうすることで、3回の連続クリック +で全て選択できます。 + +正しい形式は下記の通りです。 + + "Please pull from + + git://jdelvare.pck.nerim.net/jdelvare-2.6 i2c-for-linus + + to get these changes:" + +その結果、アドレスを自分自身でタイピングして間違えることはなくなります(実際に、 +何度か間違ったブランチから引っ張ってきてしまい、その時に diffstat の結果を +検証して間違っていることに気づいたことがあります。どこから何を引っ張るべきかを +「探したり」、正しいブランチ名かどうかを重ねてチェックしたりする必要が +なくなればより快適になるでしょう)。 + +diffstat の結果を生成するために「 git diff -M --stat --summary 」を使って +ください。-M オプションはファイル名の変更を検知でき、--summary オプションは +新規ファイル、削除されたファイル、名前が変更されたファイルの概要を生成します。 + +-M オプション(ファイル名の変更検知)を指定すると、diffstat の結果はかなり +異なってきます。git は大規模な変更(追加と削除のペア)をファイル名の変更と +判断するためです。 + ------------------------------------ セクション2 - ヒントとTIPSと小技 ------------------------------------ @@ -459,7 +620,7 @@ google で検索したがるでしょう。 も逸脱していると、レビューやコメントなしに受け取ってもらえないかもし れません。 -唯一の特筆すべき例外は、コードをあるファイルから別のファイルに移動 +特筆すべき例外は、コードをあるファイルから別のファイルに移動 するときです。この場合、コードを移動するパッチでは、移動されるコード に関して移動以外の変更を一切加えるべきではありません。これにより、 コードの移動とあなたが行ったコードの修正を明確に区別できるようにな @@ -553,4 +714,11 @@ Kernel Documentation/CodingStyle: Linus Torvalds's mail on the canonical patch format: <http://lkml.org/lkml/2005/4/7/183> + +Andi Kleen, "On submitting kernel patches" + Some strategies to get difficult or controversial changes in. + http://halobates.de/on-submitting-patches.pdf + -- + + diff --git a/Documentation/ja_JP/stable_kernel_rules.txt b/Documentation/ja_JP/stable_kernel_rules.txt index 1426583..9dbda9b 100644 --- a/Documentation/ja_JP/stable_kernel_rules.txt +++ b/Documentation/ja_JP/stable_kernel_rules.txt @@ -50,16 +50,16 @@ linux-2.6.29/Documentation/stable_kernel_rules.txt -stable ツリーにパッチを送付する手続き- - - 上記の規則に従っているかを確認した後に、stable@kernel.org にパッチ + - 上記の規則に従っているかを確認した後に、stable@vger.kernel.org にパッチ を送る。 - 送信者はパッチがキューに受け付けられた際には ACK を、却下された場合 には NAK を受け取る。この反応は開発者たちのスケジュールによって、数 日かかる場合がある。 - もし受け取られたら、パッチは他の開発者たちと関連するサブシステムの メンテナーによるレビューのために -stable キューに追加される。 - - パッチに stable@kernel.org のアドレスが付加されているときには、それ + - パッチに stable@vger.kernel.org のアドレスが付加されているときには、それ が Linus のツリーに入る時に自動的に stable チームに email される。 - - セキュリティパッチはこのエイリアス (stable@kernel.org) に送られるべ + - セキュリティパッチはこのエイリアス (stable@vger.kernel.org) に送られるべ きではなく、代わりに security@kernel.org のアドレスに送られる。 レビューサイクル- diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index 47435e5..f47cdef 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt @@ -441,7 +441,7 @@ more details, with real examples. specified if first option are not supported. Example: - #arch/i386/kernel/Makefile + #arch/x86/kernel/Makefile vsyscall-flags += $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) In the above example, vsyscall-flags will be assigned the option @@ -460,7 +460,7 @@ more details, with real examples. supported to use an optional second option. Example: - #arch/i386/Makefile + #arch/x86/Makefile cflags-y += $(call cc-option,-march=pentium-mmx,-march=i586) In the above example, cflags-y will be assigned the option @@ -522,7 +522,7 @@ more details, with real examples. even though the option was accepted by gcc. Example: - #arch/i386/Makefile + #arch/x86/Makefile cflags-y += $(shell \ if [ $(call cc-version) -ge 0300 ] ; then \ echo "-mregparm=3"; fi ;) @@ -802,7 +802,7 @@ but in the architecture makefiles where the kbuild infrastructure is not sufficient this sometimes needs to be explicit. Example: - #arch/i386/boot/Makefile + #arch/x86/boot/Makefile subdir- := compressed/ The above assignment instructs kbuild to descend down in the @@ -812,12 +812,12 @@ To support the clean infrastructure in the Makefiles that builds the final bootimage there is an optional target named archclean: Example: - #arch/i386/Makefile + #arch/x86/Makefile archclean: - $(Q)$(MAKE) $(clean)=arch/i386/boot + $(Q)$(MAKE) $(clean)=arch/x86/boot -When "make clean" is executed, make will descend down in arch/i386/boot, -and clean as usual. The Makefile located in arch/i386/boot/ may use +When "make clean" is executed, make will descend down in arch/x86/boot, +and clean as usual. The Makefile located in arch/x86/boot/ may use the subdir- trick to descend further down. Note 1: arch/$(ARCH)/Makefile cannot use "subdir-", because that file is @@ -882,7 +882,7 @@ When kbuild executes, the following steps are followed (roughly): LDFLAGS_vmlinux uses the LDFLAGS_$@ support. Example: - #arch/i386/Makefile + #arch/x86/Makefile LDFLAGS_vmlinux := -e stext OBJCOPYFLAGS objcopy flags @@ -920,14 +920,14 @@ When kbuild executes, the following steps are followed (roughly): Often, the KBUILD_CFLAGS variable depends on the configuration. Example: - #arch/i386/Makefile + #arch/x86/Makefile cflags-$(CONFIG_M386) += -march=i386 KBUILD_CFLAGS += $(cflags-y) Many arch Makefiles dynamically run the target C compiler to probe supported options: - #arch/i386/Makefile + #arch/x86/Makefile ... cflags-$(CONFIG_MPENTIUMII) += $(call cc-option,\ @@ -1038,8 +1038,8 @@ When kbuild executes, the following steps are followed (roughly): into the arch/$(ARCH)/boot/Makefile. Example: - #arch/i386/Makefile - boot := arch/i386/boot + #arch/x86/Makefile + boot := arch/x86/boot bzImage: vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ @@ -1051,7 +1051,7 @@ When kbuild executes, the following steps are followed (roughly): To support this, $(archhelp) must be defined. Example: - #arch/i386/Makefile + #arch/x86/Makefile define archhelp echo '* bzImage - Image (arch/$(ARCH)/boot/bzImage)' endif @@ -1065,7 +1065,7 @@ When kbuild executes, the following steps are followed (roughly): from vmlinux. Example: - #arch/i386/Makefile + #arch/x86/Makefile all: bzImage When "make" is executed without arguments, bzImage will be built. @@ -1083,7 +1083,7 @@ When kbuild executes, the following steps are followed (roughly): 2) kbuild knows what files to delete during "make clean" Example: - #arch/i386/kernel/Makefile + #arch/x86/kernel/Makefile extra-y := head.o init_task.o In this example, extra-y is used to list object files that @@ -1133,7 +1133,7 @@ When kbuild executes, the following steps are followed (roughly): Compress target. Use maximum compression to compress target. Example: - #arch/i386/boot/Makefile + #arch/x86/boot/Makefile LDFLAGS_bootsect := -Ttext 0x0 -s --oformat binary LDFLAGS_setup := -Ttext 0x0 -s --oformat binary -e begtext @@ -1193,7 +1193,7 @@ When kbuild executes, the following steps are followed (roughly): When updating the $(obj)/bzImage target, the line - BUILD arch/i386/boot/bzImage + BUILD arch/x86/boot/bzImage will be displayed with "make KBUILD_VERBOSE=0". @@ -1207,7 +1207,7 @@ When kbuild executes, the following steps are followed (roughly): kbuild knows .lds files and includes a rule *lds.S -> *lds. Example: - #arch/i386/kernel/Makefile + #arch/x86/kernel/Makefile always := vmlinux.lds #Makefile diff --git a/Documentation/kernel-docs.txt b/Documentation/kernel-docs.txt index 9a86746..eda1eb1 100644 --- a/Documentation/kernel-docs.txt +++ b/Documentation/kernel-docs.txt @@ -300,7 +300,7 @@ * Title: "The Kernel Hacking HOWTO" Author: Various Talented People, and Rusty. - Location: in kernel tree, Documentation/DocBook/kernel-hacking/ + Location: in kernel tree, Documentation/DocBook/kernel-hacking.tmpl (must be built as "make {htmldocs | psdocs | pdfdocs}) Keywords: HOWTO, kernel contexts, deadlock, locking, modules, symbols, return conventions. @@ -351,7 +351,7 @@ * Title: "Linux Kernel Locking HOWTO" Author: Various Talented People, and Rusty. - Location: in kernel tree, Documentation/DocBook/kernel-locking/ + Location: in kernel tree, Documentation/DocBook/kernel-locking.tmpl (must be built as "make {htmldocs | psdocs | pdfdocs}) Keywords: locks, locking, spinlock, semaphore, atomic, race condition, bottom halves, tasklets, softirqs. @@ -620,17 +620,6 @@ (including this document itself) have been moved there, and might be more up to date than the web version. - * Name: "Linux Source Driver" - URL: http://lsd.linux.cz - Keywords: Browsing source code. - Description: "Linux Source Driver (LSD) is an application, which - can make browsing source codes of Linux kernel easier than you can - imagine. You can select between multiple versions of kernel (e.g. - 0.01, 1.0.0, 2.0.33, 2.0.34pre13, 2.0.0, 2.1.101 etc.). With LSD - you can search Linux kernel (fulltext, macros, types, functions - and variables) and LSD can generate patches for you on the fly - (files, directories or kernel)". - * Name: "Linux Kernel Source Reference" Author: Thomas Graichen. URL: http://marc.info/?l=linux-kernel&m=96446640102205&w=4 diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index e9e253d..f7a7955 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -40,6 +40,7 @@ parameter is applicable: ALSA ALSA sound support is enabled. APIC APIC support is enabled. APM Advanced Power Management support is enabled. + ARM ARM architecture is enabled. AVR32 AVR32 architecture is enabled. AX25 Appropriate AX.25 support is enabled. BLACKFIN Blackfin architecture is enabled. @@ -48,7 +49,9 @@ parameter is applicable: EDD BIOS Enhanced Disk Drive Services (EDD) is enabled EFI EFI Partitioning (GPT) is enabled EIDE EIDE/ATAPI support is enabled. + EVM Extended Verification Module FB The frame buffer device is enabled. + FTRACE Function tracing enabled. GCOV GCOV profiling is enabled. HW Appropriate hardware is enabled. IA-64 IA-64 architecture is enabled. @@ -69,6 +72,7 @@ parameter is applicable: Documentation/m68k/kernel-options.txt. MCA MCA bus support is enabled. MDA MDA console support is enabled. + MIPS MIPS architecture is enabled. MOUSE Appropriate mouse support is enabled. MSI Message Signaled Interrupts (PCI). MTD MTD (Memory Technology Device) support is enabled. @@ -100,7 +104,6 @@ parameter is applicable: SPARC Sparc architecture is enabled. SWSUSP Software suspend (hibernation) is enabled. SUSPEND System suspend states are enabled. - FTRACE Function tracing enabled. TPM TPM drivers are enabled. TS Appropriate touchscreen support is enabled. UMS USB Mass Storage support is enabled. @@ -115,7 +118,7 @@ parameter is applicable: X86-64 X86-64 architecture is enabled. More X86-64 boot options can be found in Documentation/x86/x86_64/boot-options.txt . - X86 Either 32bit or 64bit x86 (same as X86-32+X86-64) + X86 Either 32-bit or 64-bit x86 (same as X86-32+X86-64) XEN Xen support is enabled In addition, the following text indicates that the option: @@ -161,7 +164,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. rsdt -- prefer RSDT over (default) XSDT copy_dsdt -- copy DSDT to memory - See also Documentation/power/pm.txt, pci=noacpi + See also Documentation/power/runtime_pm.txt, pci=noacpi + + acpi_rsdp= [ACPI,EFI,KEXEC] + Pass the RSDP address to the kernel, mostly used + on machines running EFI runtime service to boot the + second kernel for kdump. acpi_apic_instance= [ACPI, IOAPIC] Format: <int> @@ -299,7 +307,20 @@ bytes respectively. Such letter suffixes can also be entirely omitted. behaviour to be specified. Bit 0 enables warnings, bit 1 enables fixups, and bit 2 sends a segfault. - amd_iommu= [HW,X86-84] + align_va_addr= [X86-64] + Align virtual addresses by clearing slice [14:12] when + allocating a VMA at process creation time. This option + gives you up to 3% performance improvement on AMD F15h + machines (where it is enabled by default) for a + CPU-intensive style benchmark, and it can vary highly in + a microbenchmark depending on workload and compiler. + + 32: only for 32-bit processes + 64: only for 64-bit processes + on: enable for both 32- and 64-bit processes + off: disable for both 32- and 64-bit processes + + amd_iommu= [HW,X86-64] Pass parameters to the AMD IOMMU driver in the system. Possible values are: fullflush - enable flushing of IO/TLB entries when @@ -312,7 +333,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. amijoy.map= [HW,JOY] Amiga joystick support Map of devices attached to JOY0DAT and JOY1DAT Format: <a>,<b> - See also Documentation/kernel/input/joystick.txt + See also Documentation/input/joystick.txt analog.map= [HW,JOY] Analog joystick and gamepad support Specifies type or capabilities of an analog joystick @@ -371,7 +392,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. atkbd.softrepeat= [HW] Use software keyboard repeat - autotest [IA64] + autotest [IA-64] baycom_epp= [HW,AX25] Format: <io>,<mode> @@ -401,7 +422,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. bttv.radio= Most important insmod options are available as kernel args too. bttv.pll= See Documentation/video4linux/bttv/Insmod-options - bttv.tuner= and Documentation/video4linux/bttv/CARDLIST + bttv.tuner= bulk_remove=off [PPC] This parameter disables the use of the pSeries firmware feature for flushing multiple hpte entries @@ -557,6 +578,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. /proc/<pid>/coredump_filter. See also Documentation/filesystems/proc.txt. + cpuidle.off=1 [CPU_IDLE] + disable the cpuidle sub-system + cpcihp_generic= [HW,PCI] Generic port I/O CompactPCI driver Format: <first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>] @@ -684,8 +708,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. uart[8250],mmio32,<addr>[,options] Start an early, polled-mode console on the 8250/16550 UART at the specified I/O port or MMIO address. - MMIO inter-register address stride is either 8bit (mmio) - or 32bit (mmio32). + MMIO inter-register address stride is either 8-bit + (mmio) or 32-bit (mmio32). The options are the same as for ttyS, above. earlyprintk= [X86,SH,BLACKFIN] @@ -719,6 +743,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. edd= [EDD] Format: {"off" | "on" | "skip[mbr]"} + efi_no_storage_paranoia [EFI; X86] + Using this parameter you can use more than 50% of + your efi variable storage. Use this parameter only if + you are really sure that your UEFI does sane gc and + fulfills the spec otherwise your board may brick. + eisa_irq_edge= [PARISC,HW] See header of drivers/parisc/eisa.c. @@ -728,13 +758,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted. elevator= [IOSCHED] Format: {"cfq" | "deadline" | "noop"} - See Documentation/block/as-iosched.txt and + See Documentation/block/cfq-iosched.txt and Documentation/block/deadline-iosched.txt for details. - elfcorehdr= [IA64,PPC,SH,X86] + elfcorehdr=[size[KMG]@]offset[KMG] [IA64,PPC,SH,X86,S390] Specifies physical address of start of kernel core - image elf header. Generally kexec loader will - pass this option to capture kernel. + image elf header and optionally the size. Generally + kexec loader will pass this option to capture kernel. See Documentation/kdump/kdump.txt for details. enable_mtrr_cleanup [X86] @@ -764,12 +794,17 @@ bytes respectively. Such letter suffixes can also be entirely omitted. This option is obsoleted by the "netdev=" option, which has equivalent usage. See its documentation for details. + evm= [EVM] + Format: { "fix" } + Permit 'security.evm' to be updated regardless of + current integrity status. + failslab= fail_page_alloc= fail_make_request=[KNL] General fault injection mechanism. Format: <interval>,<probability>,<space>,<times> - See also /Documentation/fault-injection/. + See also Documentation/fault-injection/. floppy= [HW] See Documentation/blockdev/floppy.txt. @@ -797,7 +832,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. tracer at boot up. function-list is a comma separated list of functions. This list can be changed at run time by the set_ftrace_filter file in the debugfs - tracing directory. + tracing directory. ftrace_notrace=[function-list] [FTRACE] Do not trace the functions specified in @@ -835,7 +870,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. hashdist= [KNL,NUMA] Large hashes allocated during boot are distributed across NUMA nodes. Defaults on - for 64bit NUMA, off otherwise. + for 64-bit NUMA, off otherwise. Format: 0 | 1 (for off | on) hcl= [IA-64] SGI's Hardware Graph compatibility layer @@ -914,6 +949,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. i8042.notimeout [HW] Ignore timeout condition signalled by conroller i8042.reset [HW] Reset the controller during init and cleanup i8042.unlock [HW] Unlock (ignore) the keylock + i8042.kbdreset [HW] Reset device connected to KBD port i810= [HW,DRM] @@ -928,6 +964,20 @@ bytes respectively. Such letter suffixes can also be entirely omitted. i8k.restricted [HW] Allow controlling fans only if SYS_ADMIN capability is set. + i915.invert_brightness= + [DRM] Invert the sense of the variable that is used to + set the brightness of the panel backlight. Normally a + brightness value of 0 indicates backlight switched off, + and the maximum of the brightness value sets the backlight + to maximum brightness. If this parameter is set to 0 + (default) and the machine requires it, or this parameter + is set to 1, a brightness value of 0 sets the backlight + to maximum brightness, and the maximum of the brightness + value switches the backlight off. + -1 -- never invert brightness + 0 -- machine default + 1 -- force brightness inversion + icn= [HW,ISDN] Format: <io>[,<membase>[,<icn_id>[,<icn_id2>]]] @@ -958,6 +1008,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. ignore_loglevel [KNL] Ignore loglevel setting - this will print /all/ kernel messages to the console. Useful for debugging. + We also add it as printk module parameter, so users + could change it dynamically, usually by + /sys/module/printk/parameters/ignore_loglevel. ihash_entries= [KNL] Set number of hash buckets for inode cache. @@ -1004,10 +1057,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. DMA. forcedac [x86_64] With this option iommu will not optimize to look - for io virtual address below 32 bit forcing dual + for io virtual address below 32-bit forcing dual address cycle on pci bus for cards supporting greater - than 32 bit addressing. The default is to look - for translation below 32 bit and if not available + than 32-bit addressing. The default is to look + for translation below 32-bit and if not available then look in the higher range. strict [Default Off] With this option on every unmap_single operation will @@ -1018,12 +1071,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted. has the capability. With this option, super page will not be supported. intremap= [X86-64, Intel-IOMMU] - Format: { on (default) | off | nosid } on enable Interrupt Remapping (default) off disable Interrupt Remapping nosid disable Source ID checking + no_x2apic_optout + BIOS x2APIC opt-out request will be ignored - inttest= [IA64] + inttest= [IA-64] iomem= Disable strict checking of access to MMIO memory strict regions from userspace. @@ -1040,7 +1094,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. nomerge forcesac soft - pt [x86, IA64] + pt [x86, IA-64] io7= [HW] IO7 for Marvel based alpha systems See comment before marvel_specify_io7 in @@ -1171,11 +1225,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. kvm-amd.npt= [KVM,AMD] Disable nested paging (virtualized MMU) for all guests. - Default is 1 (enabled) if in 64bit or 32bit-PAE mode - - kvm-intel.bypass_guest_pf= - [KVM,Intel] Disables bypassing of guest page faults - on Intel chips. Default is 1 (enabled) + Default is 1 (enabled) if in 64-bit or 32-bit PAE mode. kvm-intel.ept= [KVM,Intel] Disable extended page tables (virtualized MMU) support on capable Intel chips. @@ -1189,6 +1239,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. [KVM,Intel] Disable FlexPriority feature (TPR shadow). Default is 1 (enabled) + kvm-intel.nested= + [KVM,Intel] Enable VMX nesting (nVMX). + Default is 0 (disabled) + kvm-intel.unrestricted_guest= [KVM,Intel] Disable unrestricted guest feature (virtualized real and unpaged mode) on capable @@ -1212,10 +1266,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. libata.dma=0 Disable all PATA and SATA DMA libata.dma=1 PATA and SATA Disk DMA only libata.dma=2 ATAPI (CDROM) DMA only - libata.dma=4 Compact Flash DMA only + libata.dma=4 Compact Flash DMA only Combinations also work, so libata.dma=3 enables DMA for disks and CDROMs, but not CFs. - + libata.ignore_hpa= [LIBATA] Ignore HPA limit libata.ignore_hpa=0 keep BIOS limits (default) libata.ignore_hpa=1 ignore limits, using full disk @@ -1261,6 +1315,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. * dump_id: dump IDENTIFY data. + * disable: Disable this device. + If there are multiple matching configurations changing the same attribute, the last one is used. @@ -1341,7 +1397,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. ltpc= [NET] Format: <io>,<irq>,<dma> - machvec= [IA64] Force the use of a particular machine-vector + machvec= [IA-64] Force the use of a particular machine-vector (machvec) in a generic kernel. Example: machvec=hpzx1_swiotlb @@ -1358,9 +1414,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. it is equivalent to "nosmp", which also disables the IO APIC. - max_loop= [LOOP] Maximum number of loopback devices that can - be mounted - Format: <1-256> + max_loop= [LOOP] The number of loop block devices that get + (loop.max_loop) unconditionally pre-created at init time. The default + number is configured by BLK_DEV_LOOP_MIN_COUNT. Instead + of statically allocating a predefined number, loop + devices can be requested on-demand with the + /dev/loop-control interface. mcatest= [IA-64] @@ -1647,6 +1706,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted. debugging driver suspend/resume hooks). This may not work reliably with all consoles, but is known to work with serial and VGA consoles. + To facilitate more flexible debugging, we also add + console_suspend, a printk module parameter to control + it. Users could use console_suspend (usually + /sys/module/printk/parameters/console_suspend) to + turn on/off it dynamically. noaliencache [MM, NUMA, SLAB] Disables the allocation of alien caches in the slab allocator. Saves per-node memory, @@ -1744,13 +1808,17 @@ bytes respectively. Such letter suffixes can also be entirely omitted. nointroute [IA-64] - nojitter [IA64] Disables jitter checking for ITC timers. + nojitter [IA-64] Disables jitter checking for ITC timers. no-kvmclock [X86,KVM] Disable paravirtualized KVM clock driver no-kvmapf [X86,KVM] Disable paravirtualized asynchronous page fault handling. + no-steal-acc [X86,KVM] Disable paravirtualized steal time accounting. + steal time is computed, but won't influence scheduler + behaviour + nolapic [X86-32,APIC] Do not enable or use the local APIC. nolapic_timer [X86-32,APIC] Do not use the local APIC timer. @@ -1811,7 +1879,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. nox2apic [X86-64,APIC] Do not enable x2APIC mode. - nptcg= [IA64] Override max number of concurrent global TLB + nptcg= [IA-64] Override max number of concurrent global TLB purges which is reported from either PAL_VM_SUMMARY or SAL PALO. @@ -1865,7 +1933,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. See Documentation/sound/oss/oss-parameters.txt panic= [KNL] Kernel behaviour on panic: delay <timeout> - seconds before rebooting + timeout > 0: seconds before rebooting + timeout = 0: wait forever + timeout < 0: reboot immediately Format: <timeout> parkbd.port= [HW] Parallel port number the keyboard adapter is @@ -2086,13 +2156,16 @@ bytes respectively. Such letter suffixes can also be entirely omitted. Format: { parport<nr> | timid | 0 } See also Documentation/parport.txt. - pmtmr= [X86] Manual setup of pmtmr I/O Port. + pmtmr= [X86] Manual setup of pmtmr I/O Port. Override pmtimer IOPort with a hex value. e.g. pmtmr=0x508 - pnp.debug [PNP] - Enable PNP debug messages. This depends on the - CONFIG_PNP_DEBUG_MESSAGES option. + pnp.debug=1 [PNP] + Enable PNP debug messages (depends on the + CONFIG_PNP_DEBUG_MESSAGES option). Change at run-time + via /sys/module/pnp/parameters/debug. We always show + current resource usage; turning this on also shows + possible settings and some assignment information. pnpacpi= [ACPI] { off } @@ -2170,6 +2243,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. [HW,MOUSE] Controls Logitech smartscroll autorepeat. 0 = disabled, 1 = enabled (default). + pstore.backend= Specify the name of the pstore backend to use + pt. [PARIDE] See Documentation/blockdev/paride.txt. @@ -2241,6 +2316,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. in <PAGE_SIZE> units (needed only for swap files). See Documentation/power/swsusp-and-swap-files.txt + resumedelay= [HIBERNATION] Delay (in seconds) to pause before attempting to + read the resume files + resumewait [HIBERNATION] Wait (indefinitely) for resume device to show up. Useful for devices that are detected asynchronously (e.g. USB and MMC devices). @@ -2261,6 +2339,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. ro [KNL] Mount root device read-only on boot root= [KNL] Root filesystem + See name_to_dev_t comment in init/do_mounts.c. rootdelay= [KNL] Delay (in seconds) to pause before attempting to mount the root filesystem @@ -2379,7 +2458,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. Format: <integer> sonypi.*= [HW] Sony Programmable I/O Control Device driver - See Documentation/sonypi.txt + See Documentation/laptops/sonypi.txt specialix= [HW,SERIAL] Specialix multi-serial port adapter See Documentation/serial/specialix.txt. @@ -2551,6 +2630,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted. <port#>,<js1>,<js2>,<js3>,<js4>,<js5>,<js6>,<js7> See also Documentation/input/joystick-parport.txt + udbg-immortal [PPC] When debugging early kernel crashes that + happen after console_init() and before a proper + console driver takes over, this boot options might + help "seeing" what's going on. + uhash_entries= [KNL,NET] Set number of hash buckets for UDP/UDP-Lite connections @@ -2565,6 +2649,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted. unknown_nmi_panic [X86] Cause panic on unknown NMI. + usbcore.authorized_default= + [USB] Default USB device authorization: + (default -1 = authorized except for wireless USB, + 0 = not authorized, 1 = authorized) + usbcore.autosuspend= [USB] The autosuspend time delay (in seconds) used for newly-detected USB devices (default 2). This @@ -2637,6 +2726,16 @@ bytes respectively. Such letter suffixes can also be entirely omitted. medium is write-protected). Example: quirks=0419:aaf5:rl,0421:0433:rc + user_debug= [KNL,ARM] + Format: <int> + See arch/arm/Kconfig.debug help text. + 1 - undefined instruction events + 2 - system calls + 4 - invalid data aborts + 8 - SIGSEGV faults + 16 - SIGBUS faults + Example: user_debug=31 + userpte= [X86] Flags controlling user PTE allocations. @@ -2682,6 +2781,28 @@ bytes respectively. Such letter suffixes can also be entirely omitted. vmpoff= [KNL,S390] Perform z/VM CP command after power off. Format: <command> + vsyscall= [X86-64] + Controls the behavior of vsyscalls (i.e. calls to + fixed addresses of 0xffffffffff600x00 from legacy + code). Most statically-linked binaries and older + versions of glibc use these calls. Because these + functions are at fixed addresses, they make nice + targets for exploits that can control RIP. + + emulate Vsyscalls turn into traps and are emulated + reasonably safely. + + native [default] Vsyscalls are native syscall + instructions. + This is a little bit faster than trapping + and makes a few dynamic recompilers work + better than they would in emulation mode. + It also makes exploits much easier to write. + + none Vsyscalls don't work at all. This makes + them quite hard to use for exploits but + might break your system. + vt.cur_default= [VT] Default cursor shape. Format: 0xCCBBAA, where AA, BB, and CC are the same as the parameters of the <Esc>[?A;B;Cc escape sequence; diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt index 6181548..9d66682 100644 --- a/Documentation/laptops/thinkpad-acpi.txt +++ b/Documentation/laptops/thinkpad-acpi.txt @@ -411,9 +411,9 @@ event code Key Notes 0x1004 0x03 FN+F4 Sleep button (ACPI sleep button semantics, i.e. sleep-to-RAM). - It is always generate some kind + It always generates some kind of event, either the hot key - event or a ACPI sleep button + event or an ACPI sleep button event. The firmware may refuse to generate further FN+F4 key presses until a S3 or S4 ACPI @@ -736,7 +736,7 @@ status as "unknown". The available commands are: sysfs notes: The ThinkLight sysfs interface is documented by the LED class -documentation, in Documentation/leds-class.txt. The ThinkLight LED name +documentation, in Documentation/leds/leds-class.txt. The ThinkLight LED name is "tpacpi::thinklight". Due to limitations in the sysfs LED class, if the status of the ThinkLight @@ -833,7 +833,7 @@ All of the above can be turned on and off and can be made to blink. sysfs notes: The ThinkPad LED sysfs interface is described in detail by the LED class -documentation, in Documentation/leds-class.txt. +documentation, in Documentation/leds/leds-class.txt. The LEDs are named (in LED ID order, from 0 to 12): "tpacpi::power", "tpacpi:orange:batt", "tpacpi:green:batt", diff --git a/Documentation/leds/leds-class.txt b/Documentation/leds/leds-class.txt index 4996586..79699c2 100644 --- a/Documentation/leds/leds-class.txt +++ b/Documentation/leds/leds-class.txt @@ -61,8 +61,8 @@ Hardware accelerated blink of LEDs Some LEDs can be programmed to blink without any CPU interaction. To support this feature, a LED driver can optionally implement the blink_set() function (see <linux/leds.h>). To set an LED to blinking, -however, it is better to use use the API function led_blink_set(), -as it will check and implement software fallback if necessary. +however, it is better to use the API function led_blink_set(), as it +will check and implement software fallback if necessary. To turn off blinking again, use the API function led_brightness_set() as that will not just set the LED brightness but also stop any software diff --git a/Documentation/lzo.txt b/Documentation/lzo.txt new file mode 100644 index 0000000..ea45dd3 --- /dev/null +++ b/Documentation/lzo.txt @@ -0,0 +1,164 @@ + +LZO stream format as understood by Linux's LZO decompressor +=========================================================== + +Introduction + + This is not a specification. No specification seems to be publicly available + for the LZO stream format. This document describes what input format the LZO + decompressor as implemented in the Linux kernel understands. The file subject + of this analysis is lib/lzo/lzo1x_decompress_safe.c. No analysis was made on + the compressor nor on any other implementations though it seems likely that + the format matches the standard one. The purpose of this document is to + better understand what the code does in order to propose more efficient fixes + for future bug reports. + +Description + + The stream is composed of a series of instructions, operands, and data. The + instructions consist in a few bits representing an opcode, and bits forming + the operands for the instruction, whose size and position depend on the + opcode and on the number of literals copied by previous instruction. The + operands are used to indicate : + + - a distance when copying data from the dictionary (past output buffer) + - a length (number of bytes to copy from dictionary) + - the number of literals to copy, which is retained in variable "state" + as a piece of information for next instructions. + + Optionally depending on the opcode and operands, extra data may follow. These + extra data can be a complement for the operand (eg: a length or a distance + encoded on larger values), or a literal to be copied to the output buffer. + + The first byte of the block follows a different encoding from other bytes, it + seems to be optimized for literal use only, since there is no dictionary yet + prior to that byte. + + Lengths are always encoded on a variable size starting with a small number + of bits in the operand. If the number of bits isn't enough to represent the + length, up to 255 may be added in increments by consuming more bytes with a + rate of at most 255 per extra byte (thus the compression ratio cannot exceed + around 255:1). The variable length encoding using #bits is always the same : + + length = byte & ((1 << #bits) - 1) + if (!length) { + length = ((1 << #bits) - 1) + length += 255*(number of zero bytes) + length += first-non-zero-byte + } + length += constant (generally 2 or 3) + + For references to the dictionary, distances are relative to the output + pointer. Distances are encoded using very few bits belonging to certain + ranges, resulting in multiple copy instructions using different encodings. + Certain encodings involve one extra byte, others involve two extra bytes + forming a little-endian 16-bit quantity (marked LE16 below). + + After any instruction except the large literal copy, 0, 1, 2 or 3 literals + are copied before starting the next instruction. The number of literals that + were copied may change the meaning and behaviour of the next instruction. In + practice, only one instruction needs to know whether 0, less than 4, or more + literals were copied. This is the information stored in the <state> variable + in this implementation. This number of immediate literals to be copied is + generally encoded in the last two bits of the instruction but may also be + taken from the last two bits of an extra operand (eg: distance). + + End of stream is declared when a block copy of distance 0 is seen. Only one + instruction may encode this distance (0001HLLL), it takes one LE16 operand + for the distance, thus requiring 3 bytes. + + IMPORTANT NOTE : in the code some length checks are missing because certain + instructions are called under the assumption that a certain number of bytes + follow because it has already been garanteed before parsing the instructions. + They just have to "refill" this credit if they consume extra bytes. This is + an implementation design choice independant on the algorithm or encoding. + +Byte sequences + + First byte encoding : + + 0..17 : follow regular instruction encoding, see below. It is worth + noting that codes 16 and 17 will represent a block copy from + the dictionary which is empty, and that they will always be + invalid at this place. + + 18..21 : copy 0..3 literals + state = (byte - 17) = 0..3 [ copy <state> literals ] + skip byte + + 22..255 : copy literal string + length = (byte - 17) = 4..238 + state = 4 [ don't copy extra literals ] + skip byte + + Instruction encoding : + + 0 0 0 0 X X X X (0..15) + Depends on the number of literals copied by the last instruction. + If last instruction did not copy any literal (state == 0), this + encoding will be a copy of 4 or more literal, and must be interpreted + like this : + + 0 0 0 0 L L L L (0..15) : copy long literal string + length = 3 + (L ?: 15 + (zero_bytes * 255) + non_zero_byte) + state = 4 (no extra literals are copied) + + If last instruction used to copy between 1 to 3 literals (encoded in + the instruction's opcode or distance), the instruction is a copy of a + 2-byte block from the dictionary within a 1kB distance. It is worth + noting that this instruction provides little savings since it uses 2 + bytes to encode a copy of 2 other bytes but it encodes the number of + following literals for free. It must be interpreted like this : + + 0 0 0 0 D D S S (0..15) : copy 2 bytes from <= 1kB distance + length = 2 + state = S (copy S literals after this block) + Always followed by exactly one byte : H H H H H H H H + distance = (H << 2) + D + 1 + + If last instruction used to copy 4 or more literals (as detected by + state == 4), the instruction becomes a copy of a 3-byte block from the + dictionary from a 2..3kB distance, and must be interpreted like this : + + 0 0 0 0 D D S S (0..15) : copy 3 bytes from 2..3 kB distance + length = 3 + state = S (copy S literals after this block) + Always followed by exactly one byte : H H H H H H H H + distance = (H << 2) + D + 2049 + + 0 0 0 1 H L L L (16..31) + Copy of a block within 16..48kB distance (preferably less than 10B) + length = 2 + (L ?: 7 + (zero_bytes * 255) + non_zero_byte) + Always followed by exactly one LE16 : D D D D D D D D : D D D D D D S S + distance = 16384 + (H << 14) + D + state = S (copy S literals after this block) + End of stream is reached if distance == 16384 + + 0 0 1 L L L L L (32..63) + Copy of small block within 16kB distance (preferably less than 34B) + length = 2 + (L ?: 31 + (zero_bytes * 255) + non_zero_byte) + Always followed by exactly one LE16 : D D D D D D D D : D D D D D D S S + distance = D + 1 + state = S (copy S literals after this block) + + 0 1 L D D D S S (64..127) + Copy 3-4 bytes from block within 2kB distance + state = S (copy S literals after this block) + length = 3 + L + Always followed by exactly one byte : H H H H H H H H + distance = (H << 3) + D + 1 + + 1 L L D D D S S (128..255) + Copy 5-8 bytes from block within 2kB distance + state = S (copy S literals after this block) + length = 5 + L + Always followed by exactly one byte : H H H H H H H H + distance = (H << 3) + D + 1 + +Authors + + This document was written by Willy Tarreau <w@1wt.eu> on 2014/07/19 during an + analysis of the decompression code available in Linux 3.16-rc5. The code is + tricky, it is possible that this document contains mistakes or that a few + corner cases were overlooked. In any case, please report any doubt, fix, or + proposed updates to the author(s) so that the document can be updated. diff --git a/Documentation/m68k/kernel-options.txt b/Documentation/m68k/kernel-options.txt index c93bed6..97d45f2 100644 --- a/Documentation/m68k/kernel-options.txt +++ b/Documentation/m68k/kernel-options.txt @@ -129,6 +129,20 @@ decimal 11 is the major of SCSI CD-ROMs, and the minor 0 stands for the first of these. You can find out all valid major numbers by looking into include/linux/major.h. +In addition to major and minor numbers, if the device containing your +root partition uses a partition table format with unique partition +identifiers, then you may use them. For instance, +"root=PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF". It is also +possible to reference another partition on the same device using a +known partition UUID as the starting point. For example, +if partition 5 of the device has the UUID of +00112233-4455-6677-8899-AABBCCDDEEFF then partition 3 may be found as +follows: + PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF/PARTNROFF=-2 + +Authoritative information can be found in +"Documentation/kernel-parameters.txt". + 2.2) ro, rw ----------- diff --git a/Documentation/magic-number.txt b/Documentation/magic-number.txt index 4b12abc..abf481f 100644 --- a/Documentation/magic-number.txt +++ b/Documentation/magic-number.txt @@ -66,7 +66,7 @@ MKISS_DRIVER_MAGIC 0x04bf mkiss_channel drivers/net/mkiss.h RISCOM8_MAGIC 0x0907 riscom_port drivers/char/riscom8.h SPECIALIX_MAGIC 0x0907 specialix_port drivers/char/specialix_io8.h HDLC_MAGIC 0x239e n_hdlc drivers/char/n_hdlc.c -APM_BIOS_MAGIC 0x4101 apm_user arch/i386/kernel/apm.c +APM_BIOS_MAGIC 0x4101 apm_user arch/x86/kernel/apm_32.c CYCLADES_MAGIC 0x4359 cyclades_port include/linux/cyclades.h DB_MAGIC 0x4442 fc_info drivers/net/iph5526_novram.c DL_MAGIC 0x444d fc_info drivers/net/iph5526_novram.c diff --git a/Documentation/mca.txt b/Documentation/mca.txt index 510375d..dfd130c 100644 --- a/Documentation/mca.txt +++ b/Documentation/mca.txt @@ -11,7 +11,7 @@ Adapter Detection The ideal MCA adapter detection is done through the use of the Programmable Option Select registers. Generic functions for doing -this have been added in include/linux/mca.h and arch/i386/kernel/mca.c. +this have been added in include/linux/mca.h and arch/x86/kernel/mca_32.c. Everything needed to detect adapters and read (and write) configuration information is there. A number of MCA-specific drivers already use this. The typical probe code looks like the following: @@ -81,7 +81,7 @@ more people use shared IRQs on PCI machines. In general, an interrupt must be acknowledged not only at the ICU (which is done automagically by the kernel), but at the device level. In particular, IRQ 0 must be reset after a timer interrupt (now done in -arch/i386/kernel/time.c) or the first timer interrupt hangs the system. +arch/x86/kernel/time.c) or the first timer interrupt hangs the system. There were also problems with the 1.3.x floppy drivers, but that seems to have been fixed. diff --git a/Documentation/md.txt b/Documentation/md.txt index f0eee83..fc94770 100644 --- a/Documentation/md.txt +++ b/Documentation/md.txt @@ -360,18 +360,20 @@ Each directory contains: A file recording the current state of the device in the array which can be a comma separated list of faulty - device has been kicked from active use due to - a detected fault + a detected fault or it has unacknowledged bad + blocks in_sync - device is a fully in-sync member of the array writemostly - device will only be subject to read requests if there are no other options. This applies only to raid1 arrays. - blocked - device has failed, metadata is "external", - and the failure hasn't been acknowledged yet. + blocked - device has failed, and the failure hasn't been + acknowledged yet by the metadata handler. Writes that would write to this device if it were not faulty are blocked. spare - device is working, but not a full member. This includes spares that are in the process of being recovered to + write_error - device has ever seen a write error. This list may grow in future. This can be written to. Writing "faulty" simulates a failure on the device. @@ -379,9 +381,11 @@ Each directory contains: Writing "writemostly" sets the writemostly flag. Writing "-writemostly" clears the writemostly flag. Writing "blocked" sets the "blocked" flag. - Writing "-blocked" clears the "blocked" flag and allows writes - to complete. + Writing "-blocked" clears the "blocked" flags and allows writes + to complete and possibly simulates an error. Writing "in_sync" sets the in_sync flag. + Writing "write_error" sets writeerrorseen flag. + Writing "-write_error" clears writeerrorseen flag. This file responds to select/poll. Any change to 'faulty' or 'blocked' causes an event. @@ -419,7 +423,6 @@ Each directory contains: written, it will be rejected. recovery_start - When the device is not 'in_sync', this records the number of sectors from the start of the device which are known to be correct. This is normally zero, but during a recovery @@ -435,6 +438,20 @@ Each directory contains: Setting this to 'none' is equivalent to setting 'in_sync'. Setting to any other value also clears the 'in_sync' flag. + bad_blocks + This gives the list of all known bad blocks in the form of + start address and length (in sectors respectively). If output + is too big to fit in a page, it will be truncated. Writing + "sector length" to this file adds new acknowledged (i.e. + recorded to disk safely) bad blocks. + + unacknowledged_bad_blocks + This gives the list of known-but-not-yet-saved-to-disk bad + blocks in the same form of 'bad_blocks'. If output is too big + to fit in a page, it will be truncated. Writing to this file + adds bad blocks without acknowledging them. This is largely + for testing. + An active md device will also contain and entry for each active device diff --git a/Documentation/media-framework.txt b/Documentation/media-framework.txt index 76a2087..3a0f879 100644 --- a/Documentation/media-framework.txt +++ b/Documentation/media-framework.txt @@ -9,8 +9,8 @@ Introduction ------------ The media controller API is documented in DocBook format in -Documentation/DocBook/v4l/media-controller.xml. This document will focus on -the kernel-side implementation of the media framework. +Documentation/DocBook/media/v4l/media-controller.xml. This document will focus +on the kernel-side implementation of the media framework. Abstract media device model @@ -310,7 +310,7 @@ is non-immutable. The operation must either configure the hardware or store the configuration information to be applied later. Link configuration must not have any side effect on other links. If an enabled -link at a sink pad prevents another link at the same pad from being disabled, +link at a sink pad prevents another link at the same pad from being enabled, the link_setup operation must return -EBUSY and can't implicitly disable the first enabled link. diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt index f0d3a80..2759f7c 100644 --- a/Documentation/memory-barriers.txt +++ b/Documentation/memory-barriers.txt @@ -438,7 +438,7 @@ There are certain things that the Linux kernel memory barriers do not guarantee: [*] For information on bus mastering DMA and coherency please read: Documentation/PCI/pci.txt - Documentation/PCI/PCI-DMA-mapping.txt + Documentation/DMA-API-HOWTO.txt Documentation/DMA-API.txt diff --git a/Documentation/mmc/00-INDEX b/Documentation/mmc/00-INDEX index 93dd7a7..a9ba672 100644 --- a/Documentation/mmc/00-INDEX +++ b/Documentation/mmc/00-INDEX @@ -4,3 +4,5 @@ mmc-dev-attrs.txt - info on SD and MMC device attributes mmc-dev-parts.txt - info on SD and MMC device partitions +mmc-async-req.txt + - info on mmc asynchronous requests diff --git a/Documentation/mmc/mmc-async-req.txt b/Documentation/mmc/mmc-async-req.txt new file mode 100644 index 0000000..ae1907b --- /dev/null +++ b/Documentation/mmc/mmc-async-req.txt @@ -0,0 +1,87 @@ +Rationale +========= + +How significant is the cache maintenance overhead? +It depends. Fast eMMC and multiple cache levels with speculative cache +pre-fetch makes the cache overhead relatively significant. If the DMA +preparations for the next request are done in parallel with the current +transfer, the DMA preparation overhead would not affect the MMC performance. +The intention of non-blocking (asynchronous) MMC requests is to minimize the +time between when an MMC request ends and another MMC request begins. +Using mmc_wait_for_req(), the MMC controller is idle while dma_map_sg and +dma_unmap_sg are processing. Using non-blocking MMC requests makes it +possible to prepare the caches for next job in parallel with an active +MMC request. + +MMC block driver +================ + +The mmc_blk_issue_rw_rq() in the MMC block driver is made non-blocking. +The increase in throughput is proportional to the time it takes to +prepare (major part of preparations are dma_map_sg() and dma_unmap_sg()) +a request and how fast the memory is. The faster the MMC/SD is the +more significant the prepare request time becomes. Roughly the expected +performance gain is 5% for large writes and 10% on large reads on a L2 cache +platform. In power save mode, when clocks run on a lower frequency, the DMA +preparation may cost even more. As long as these slower preparations are run +in parallel with the transfer performance won't be affected. + +Details on measurements from IOZone and mmc_test +================================================ + +https://wiki.linaro.org/WorkingGroups/Kernel/Specs/StoragePerfMMC-async-req + +MMC core API extension +====================== + +There is one new public function mmc_start_req(). +It starts a new MMC command request for a host. The function isn't +truly non-blocking. If there is an ongoing async request it waits +for completion of that request and starts the new one and returns. It +doesn't wait for the new request to complete. If there is no ongoing +request it starts the new request and returns immediately. + +MMC host extensions +=================== + +There are two optional members in the mmc_host_ops -- pre_req() and +post_req() -- that the host driver may implement in order to move work +to before and after the actual mmc_host_ops.request() function is called. +In the DMA case pre_req() may do dma_map_sg() and prepare the DMA +descriptor, and post_req() runs the dma_unmap_sg(). + +Optimize for the first request +============================== + +The first request in a series of requests can't be prepared in parallel +with the previous transfer, since there is no previous request. +The argument is_first_req in pre_req() indicates that there is no previous +request. The host driver may optimize for this scenario to minimize +the performance loss. A way to optimize for this is to split the current +request in two chunks, prepare the first chunk and start the request, +and finally prepare the second chunk and start the transfer. + +Pseudocode to handle is_first_req scenario with minimal prepare overhead: + +if (is_first_req && req->size > threshold) + /* start MMC transfer for the complete transfer size */ + mmc_start_command(MMC_CMD_TRANSFER_FULL_SIZE); + + /* + * Begin to prepare DMA while cmd is being processed by MMC. + * The first chunk of the request should take the same time + * to prepare as the "MMC process command time". + * If prepare time exceeds MMC cmd time + * the transfer is delayed, guesstimate max 4k as first chunk size. + */ + prepare_1st_chunk_for_dma(req); + /* flush pending desc to the DMAC (dmaengine.h) */ + dma_issue_pending(req->dma_desc); + + prepare_2nd_chunk_for_dma(req); + /* + * The second issue_pending should be called before MMC runs out + * of the first chunk. If the MMC runs out of the first data chunk + * before this call, the transfer is delayed. + */ + dma_issue_pending(req->dma_desc); diff --git a/Documentation/networking/00-INDEX b/Documentation/networking/00-INDEX index 4edd78d..bbce121 100644 --- a/Documentation/networking/00-INDEX +++ b/Documentation/networking/00-INDEX @@ -1,13 +1,21 @@ 00-INDEX - this file +3c359.txt + - information on the 3Com TokenLink Velocity XL (3c5359) driver. 3c505.txt - information on the 3Com EtherLink Plus (3c505) driver. +3c509.txt + - information on the 3Com Etherlink III Series Ethernet cards. 6pack.txt - info on the 6pack protocol, an alternative to KISS for AX.25 DLINK.txt - info on the D-Link DE-600/DE-620 parallel port pocket adapters PLIP.txt - PLIP: The Parallel Line Internet Protocol device driver +README.ipw2100 + - README for the Intel PRO/Wireless 2100 driver. +README.ipw2200 + - README for the Intel PRO/Wireless 2915ABG and 2200BG driver. README.sb1000 - info on General Instrument/NextLevel SURFboard1000 cable modem. alias.txt @@ -20,8 +28,12 @@ atm.txt - info on where to get ATM programs and support for Linux. ax25.txt - info on using AX.25 and NET/ROM code for Linux +batman-adv.txt + - B.A.T.M.A.N routing protocol on top of layer 2 Ethernet Frames. baycom.txt - info on the driver for Baycom style amateur radio modems +bonding.txt + - Linux Ethernet Bonding Driver HOWTO: link aggregation in Linux. bridge.txt - where to get user space programs for ethernet bridging with Linux. can.txt @@ -34,32 +46,60 @@ cxacru.txt - Conexant AccessRunner USB ADSL Modem cxacru-cf.py - Conexant AccessRunner USB ADSL Modem configuration file parser +cxgb.txt + - Release Notes for the Chelsio N210 Linux device driver. +dccp.txt + - the Datagram Congestion Control Protocol (DCCP) (RFC 4340..42). de4x5.txt - the Digital EtherWORKS DE4?? and DE5?? PCI Ethernet driver decnet.txt - info on using the DECnet networking layer in Linux. depca.txt - the Digital DEPCA/EtherWORKS DE1?? and DE2?? LANCE Ethernet driver +dl2k.txt + - README for D-Link DL2000-based Gigabit Ethernet Adapters (dl2k.ko). +dm9000.txt + - README for the Simtec DM9000 Network driver. dmfe.txt - info on the Davicom DM9102(A)/DM9132/DM9801 fast ethernet driver. +dns_resolver.txt + - The DNS resolver module allows kernel servies to make DNS queries. +driver.txt + - Softnet driver issues. e100.txt - info on Intel's EtherExpress PRO/100 line of 10/100 boards e1000.txt - info on Intel's E1000 line of gigabit ethernet boards +e1000e.txt + - README for the Intel Gigabit Ethernet Driver (e1000e). eql.txt - serial IP load balancing ewrk3.txt - the Digital EtherWORKS 3 DE203/4/5 Ethernet driver +fib_trie.txt + - Level Compressed Trie (LC-trie) notes: a structure for routing. filter.txt - Linux Socket Filtering fore200e.txt - FORE Systems PCA-200E/SBA-200E ATM NIC driver info. framerelay.txt - info on using Frame Relay/Data Link Connection Identifier (DLCI). +gen_stats.txt + - Generic networking statistics for netlink users. +generic_hdlc.txt + - The generic High Level Data Link Control (HDLC) layer. generic_netlink.txt - info on Generic Netlink +gianfar.txt + - Gianfar Ethernet Driver. ieee802154.txt - Linux IEEE 802.15.4 implementation, API and drivers +ifenslave.c + - Configure network interfaces for parallel routing (bonding). +igb.txt + - README for the Intel Gigabit Ethernet Driver (igb). +igbvf.txt + - README for the Intel Gigabit Ethernet Driver (igbvf). ip-sysctl.txt - /proc/sys/net/ipv4/* variables ip_dynaddr.txt @@ -68,41 +108,117 @@ ipddp.txt - AppleTalk-IP Decapsulation and AppleTalk-IP Encapsulation iphase.txt - Interphase PCI ATM (i)Chip IA Linux driver info. +ipv6.txt + - Options to the ipv6 kernel module. +ipvs-sysctl.txt + - Per-inode explanation of the /proc/sys/net/ipv4/vs interface. irda.txt - where to get IrDA (infrared) utilities and info for Linux. +ixgb.txt + - README for the Intel 10 Gigabit Ethernet Driver (ixgb). +ixgbe.txt + - README for the Intel 10 Gigabit Ethernet Driver (ixgbe). +ixgbevf.txt + - README for the Intel Virtual Function (VF) Driver (ixgbevf). +l2tp.txt + - User guide to the L2TP tunnel protocol. lapb-module.txt - programming information of the LAPB module. ltpc.txt - the Apple or Farallon LocalTalk PC card driver +mac80211-injection.txt + - HOWTO use packet injection with mac80211 multicast.txt - Behaviour of cards under Multicast +multiqueue.txt + - HOWTO for multiqueue network device support. +netconsole.txt + - The network console module netconsole.ko: configuration and notes. +netdev-features.txt + - Network interface features API description. netdevices.txt - info on network device driver functions exported to the kernel. +netif-msg.txt + - Design of the network interface message level setting (NETIF_MSG_*). +nfc.txt + - The Linux Near Field Communication (NFS) subsystem. olympic.txt - IBM PCI Pit/Pit-Phy/Olympic Token Ring driver info. +operstates.txt + - Overview of network interface operational states. +packet_mmap.txt + - User guide to memory mapped packet socket rings (PACKET_[RT]X_RING). +phonet.txt + - The Phonet packet protocol used in Nokia cellular modems. +phy.txt + - The PHY abstraction layer. +pktgen.txt + - User guide to the kernel packet generator (pktgen.ko). policy-routing.txt - IP policy-based routing +ppp_generic.txt + - Information about the generic PPP driver. +proc_net_tcp.txt + - Per inode overview of the /proc/net/tcp and /proc/net/tcp6 interfaces. +radiotap-headers.txt + - Background on radiotap headers. ray_cs.txt - Raylink Wireless LAN card driver info. +rds.txt + - Background on the reliable, ordered datagram delivery method RDS. +regulatory.txt + - Overview of the Linux wireless regulatory infrastructure. +rxrpc.txt + - Guide to the RxRPC protocol. +s2io.txt + - Release notes for Neterion Xframe I/II 10GbE driver. +scaling.txt + - Explanation of network scaling techniques: RSS, RPS, RFS, aRFS, XPS. +sctp.txt + - Notes on the Linux kernel implementation of the SCTP protocol. +secid.txt + - Explanation of the secid member in flow structures. skfp.txt - SysKonnect FDDI (SK-5xxx, Compaq Netelligent) driver info. smc9.txt - the driver for SMC's 9000 series of Ethernet cards smctr.txt - SMC TokenCard TokenRing Linux driver info. +spider-net.txt + - README for the Spidernet Driver (as found in PS3 / Cell BE). +stmmac.txt + - README for the STMicro Synopsys Ethernet driver. +tc-actions-env-rules.txt + - rules for traffic control (tc) actions. +timestamping.txt + - overview of network packet timestamping variants. tcp.txt - short blurb on how TCP output takes place. +tcp-thin.txt + - kernel tuning options for low rate 'thin' TCP streams. tlan.txt - ThunderLAN (Compaq Netelligent 10/100, Olicom OC-2xxx) driver info. tms380tr.txt - SysKonnect Token Ring ISA/PCI adapter driver info. +tproxy.txt + - Transparent proxy support user guide. tuntap.txt - TUN/TAP device driver, allowing user space Rx/Tx of packets. +udplite.txt + - UDP-Lite protocol (RFC 3828) introduction. vortex.txt - info on using 3Com Vortex (3c590, 3c592, 3c595, 3c597) Ethernet cards. +vxge.txt + - README for the Neterion X3100 PCIe Server Adapter. x25.txt - general info on X.25 development. x25-iface.txt - description of the X.25 Packet Layer to LAPB device interface. +xfrm_proc.txt + - description of the statistics package for XFRM. +xfrm_sync.txt + - sync patches for XFRM enable migration of an SA between hosts. +xfrm_sysctl.txt + - description of the XFRM configuration options. z8530drv.txt - info about Linux driver for Z8530 based HDLC cards for AX.25 diff --git a/Documentation/networking/LICENSE.qlcnic b/Documentation/networking/LICENSE.qlcnic index 29ad4b1..e7fb2c6 100644 --- a/Documentation/networking/LICENSE.qlcnic +++ b/Documentation/networking/LICENSE.qlcnic @@ -1,61 +1,22 @@ -Copyright (c) 2009-2010 QLogic Corporation +Copyright (c) 2009-2011 QLogic Corporation QLogic Linux qlcnic NIC Driver -This program includes a device driver for Linux 2.6 that may be -distributed with QLogic hardware specific firmware binary file. You may modify and redistribute the device driver code under the GNU General Public License (a copy of which is attached hereto as Exhibit A) published by the Free Software Foundation (version 2). -You may redistribute the hardware specific firmware binary file -under the following terms: - - 1. Redistribution of source code (only if applicable), - must retain the above copyright notice, this list of - conditions and the following disclaimer. - - 2. Redistribution in binary form must reproduce the above - copyright notice, this list of conditions and the - following disclaimer in the documentation and/or other - materials provided with the distribution. - - 3. The name of QLogic Corporation may not be used to - endorse or promote products derived from this software - without specific prior written permission - -REGARDLESS OF WHAT LICENSING MECHANISM IS USED OR APPLICABLE, -THIS PROGRAM IS PROVIDED BY QLOGIC CORPORATION "AS IS'' AND ANY -EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A -PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR -BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED -TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON -ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, -OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -POSSIBILITY OF SUCH DAMAGE. - -USER ACKNOWLEDGES AND AGREES THAT USE OF THIS PROGRAM WILL NOT -CREATE OR GIVE GROUNDS FOR A LICENSE BY IMPLICATION, ESTOPPEL, OR -OTHERWISE IN ANY INTELLECTUAL PROPERTY RIGHTS (PATENT, COPYRIGHT, -TRADE SECRET, MASK WORK, OR OTHER PROPRIETARY RIGHT) EMBODIED IN -ANY OTHER QLOGIC HARDWARE OR SOFTWARE EITHER SOLELY OR IN -COMBINATION WITH THIS PROGRAM. - EXHIBIT A - GNU GENERAL PUBLIC LICENSE - Version 2, June 1991 + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. - Preamble + Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public @@ -105,7 +66,7 @@ patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. - GNU GENERAL PUBLIC LICENSE + GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains @@ -304,7 +265,7 @@ make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. - NO WARRANTY + NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN diff --git a/Documentation/networking/batman-adv.txt b/Documentation/networking/batman-adv.txt index 88d4afb..c86d03f 100644 --- a/Documentation/networking/batman-adv.txt +++ b/Documentation/networking/batman-adv.txt @@ -1,4 +1,4 @@ -[state: 17-04-2011] +[state: 21-08-2011] BATMAN-ADV ---------- @@ -68,9 +68,9 @@ All mesh wide settings can be found in batman's own interface folder: # ls /sys/class/net/bat0/mesh/ -# aggregated_ogms gw_bandwidth hop_penalty -# bonding gw_mode orig_interval -# fragmentation gw_sel_class vis_mode +# aggregated_ogms fragmentation gw_sel_class vis_mode +# ap_isolation gw_bandwidth hop_penalty +# bonding gw_mode orig_interval There is a special folder for debugging information: diff --git a/Documentation/networking/bonding.txt b/Documentation/networking/bonding.txt index 675612f..91df678 100644 --- a/Documentation/networking/bonding.txt +++ b/Documentation/networking/bonding.txt @@ -238,6 +238,18 @@ ad_select This option was added in bonding version 3.4.0. +all_slaves_active + + Specifies that duplicate frames (received on inactive ports) should be + dropped (0) or delivered (1). + + Normally, bonding will drop duplicate frames (received on inactive + ports), which is desirable for most users. But there are some times + it is nice to allow duplicate frames to be delivered. + + The default value is 0 (drop duplicate frames received on inactive + ports). + arp_interval Specifies the ARP link monitoring frequency in milliseconds. @@ -433,6 +445,23 @@ miimon determined. See the High Availability section for additional information. The default value is 0. +min_links + + Specifies the minimum number of links that must be active before + asserting carrier. It is similar to the Cisco EtherChannel min-links + feature. This allows setting the minimum number of member ports that + must be up (link-up state) before marking the bond device as up + (carrier on). This is useful for situations where higher level services + such as clustering want to ensure a minimum number of low bandwidth + links are active before switchover. This option only affect 802.3ad + mode. + + The default value is 0. This will cause carrier to be asserted (for + 802.3ad mode) whenever there is an active aggregator, regardless of the + number of available links in that aggregator. Note that, because an + aggregator cannot be active without at least one available link, + setting this option to 0 or to 1 has the exact same effect. + mode Specifies one of the bonding policies. The default is @@ -599,7 +628,7 @@ num_unsol_na affect only the active-backup mode. These options were added for bonding versions 3.3.0 and 3.4.0 respectively. - From Linux 2.6.40 and bonding version 3.7.1, these notifications + From Linux 3.0 and bonding version 3.7.1, these notifications are generated by the ipv4 and ipv6 code and the numbers of repetitions cannot be set independently. diff --git a/Documentation/networking/dmfe.txt b/Documentation/networking/dmfe.txt index 8006c22..25320bf 100644 --- a/Documentation/networking/dmfe.txt +++ b/Documentation/networking/dmfe.txt @@ -1,3 +1,5 @@ +Note: This driver doesn't have a maintainer. + Davicom DM9102(A)/DM9132/DM9801 fast ethernet driver for Linux. This program is free software; you can redistribute it and/or @@ -55,7 +57,6 @@ Test and make sure PCI latency is now correct for all cases. Authors: Sten Wang <sten_wang@davicom.com.tw > : Original Author -Tobias Ringstrom <tori@unhappy.mine.nu> : Current Maintainer Contributors: diff --git a/Documentation/networking/ifenslave.c b/Documentation/networking/ifenslave.c index 50f1dc4..ac5debb 100644 --- a/Documentation/networking/ifenslave.c +++ b/Documentation/networking/ifenslave.c @@ -260,7 +260,7 @@ int main(int argc, char *argv[]) case 'V': opt_V++; exclusive++; break; case '?': - fprintf(stderr, usage_msg); + fprintf(stderr, "%s", usage_msg); res = 2; goto out; } @@ -268,13 +268,13 @@ int main(int argc, char *argv[]) /* options check */ if (exclusive > 1) { - fprintf(stderr, usage_msg); + fprintf(stderr, "%s", usage_msg); res = 2; goto out; } if (opt_v || opt_V) { - printf(version); + printf("%s", version); if (opt_V) { res = 0; goto out; @@ -282,14 +282,14 @@ int main(int argc, char *argv[]) } if (opt_u) { - printf(usage_msg); + printf("%s", usage_msg); res = 0; goto out; } if (opt_h) { - printf(usage_msg); - printf(help_msg); + printf("%s", usage_msg); + printf("%s", help_msg); res = 0; goto out; } @@ -309,7 +309,7 @@ int main(int argc, char *argv[]) goto out; } else { /* Just show usage */ - fprintf(stderr, usage_msg); + fprintf(stderr, "%s", usage_msg); res = 2; goto out; } @@ -320,7 +320,7 @@ int main(int argc, char *argv[]) master_ifname = *spp++; if (master_ifname == NULL) { - fprintf(stderr, usage_msg); + fprintf(stderr, "%s", usage_msg); res = 2; goto out; } @@ -339,7 +339,7 @@ int main(int argc, char *argv[]) if (slave_ifname == NULL) { if (opt_d || opt_c) { - fprintf(stderr, usage_msg); + fprintf(stderr, "%s", usage_msg); res = 2; goto out; } diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 890fce9..3b979c6 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -20,7 +20,7 @@ ip_no_pmtu_disc - BOOLEAN default FALSE min_pmtu - INTEGER - default 562 - minimum discovered Path MTU + default 552 - minimum discovered Path MTU route/max_size - INTEGER Maximum number of routes allowed in the kernel. Increase @@ -106,16 +106,6 @@ inet_peer_maxttl - INTEGER when the number of entries in the pool is very small). Measured in seconds. -inet_peer_gc_mintime - INTEGER - Minimum interval between garbage collection passes. This interval is - in effect under high memory pressure on the pool. - Measured in seconds. - -inet_peer_gc_maxtime - INTEGER - Minimum interval between garbage collection passes. This interval is - in effect under low (or absent) memory pressure on the pool. - Measured in seconds. - TCP variables: somaxconn - INTEGER @@ -292,11 +282,11 @@ tcp_max_ssthresh - INTEGER Default: 0 (off) tcp_max_syn_backlog - INTEGER - Maximal number of remembered connection requests, which are - still did not receive an acknowledgment from connecting client. - Default value is 1024 for systems with more than 128Mb of memory, - and 128 for low memory machines. If server suffers of overload, - try to increase this number. + Maximal number of remembered connection requests, which have not + received an acknowledgment from connecting client. + The minimal value is 128 for low memory machines, and it will + increase in proportion to the memory of machine. + If server suffers from overload, try increasing this number. tcp_max_tw_buckets - INTEGER Maximal number of timewait sockets held by system simultaneously. @@ -394,7 +384,7 @@ tcp_rmem - vector of 3 INTEGERs: min, default, max min: Minimal size of receive buffer used by TCP sockets. It is guaranteed to each TCP socket, even under moderate memory pressure. - Default: 8K + Default: 1 page default: initial size of receive buffer used by TCP sockets. This value overrides net.core.rmem_default used by other protocols. @@ -483,7 +473,7 @@ tcp_window_scaling - BOOLEAN tcp_wmem - vector of 3 INTEGERs: min, default, max min: Amount of memory reserved for send buffers for TCP sockets. Each TCP socket has rights to use it due to fact of its birth. - Default: 4K + Default: 1 page default: initial size of send buffer used by TCP sockets. This value overrides net.core.wmem_default used by other protocols. @@ -558,13 +548,13 @@ udp_rmem_min - INTEGER Minimal size of receive buffer used by UDP sockets in moderation. Each UDP socket is able to use the size for receiving data, even if total pages of UDP sockets exceed udp_mem pressure. The unit is byte. - Default: 4096 + Default: 1 page udp_wmem_min - INTEGER Minimal size of send buffer used by UDP sockets in moderation. Each UDP socket is able to use the size for sending data, even if total pages of UDP sockets exceed udp_mem pressure. The unit is byte. - Default: 4096 + Default: 1 page CIPSOv4 Variables: @@ -1007,7 +997,7 @@ bindv6only - BOOLEAN TRUE: disable IPv4-mapped address feature FALSE: enable IPv4-mapped address feature - Default: FALSE (as specified in RFC2553bis) + Default: FALSE (as specified in RFC3493) IPv6 Fragmentation: @@ -1057,9 +1047,14 @@ conf/interface/*: The functional behaviour for certain settings is different depending on whether local forwarding is enabled or not. -accept_ra - BOOLEAN +accept_ra - INTEGER Accept Router Advertisements; autoconfigure using them. + It also determines whether or not to transmit Router + Solicitations. If and only if the functional setting is to + accept Router Advertisements, Router Solicitations will be + transmitted. + Possible values are: 0 Do not accept Router Advertisements. 1 Accept Router Advertisements if forwarding is disabled. @@ -1121,7 +1116,7 @@ dad_transmits - INTEGER The amount of Duplicate Address Detection probes to send. Default: 1 -forwarding - BOOLEAN +forwarding - INTEGER Configure interface-specific Host/Router behaviour. Note: It is recommended to have the same setting on all @@ -1130,14 +1125,14 @@ forwarding - BOOLEAN Possible values are: 0 Forwarding disabled 1 Forwarding enabled - 2 Forwarding enabled (Hybrid Mode) FALSE (0): By default, Host behaviour is assumed. This means: 1. IsRouter flag is not set in Neighbour Advertisements. - 2. Router Solicitations are being sent when necessary. + 2. If accept_ra is TRUE (default), transmit Router + Solicitations. 3. If accept_ra is TRUE (default), accept Router Advertisements (and do autoconfiguration). 4. If accept_redirects is TRUE (default), accept Redirects. @@ -1148,16 +1143,10 @@ forwarding - BOOLEAN This means exactly the reverse from the above: 1. IsRouter flag is set in Neighbour Advertisements. - 2. Router Solicitations are not sent. + 2. Router Solicitations are not sent unless accept_ra is 2. 3. Router Advertisements are ignored unless accept_ra is 2. 4. Redirects are ignored. - TRUE (2): - - Hybrid mode. Same behaviour as TRUE, except for: - - 2. Router Solicitations are being sent when necessary. - Default: 0 (disabled) if global forwarding is disabled (default), otherwise 1 (enabled). @@ -1470,10 +1459,17 @@ sctp_mem - vector of 3 INTEGERs: min, pressure, max Default is calculated at boot time from amount of available memory. sctp_rmem - vector of 3 INTEGERs: min, default, max - See tcp_rmem for a description. + Only the first value ("min") is used, "default" and "max" are + ignored. + + min: Minimal size of receive buffer used by SCTP socket. + It is guaranteed to each SCTP socket (but not association) even + under moderate memory pressure. + + Default: 1 page sctp_wmem - vector of 3 INTEGERs: min, default, max - See tcp_wmem for a description. + Currently this tunable has no effect. addr_scope_policy - INTEGER Control IPv4 address scoping - draft-stewart-tsvwg-sctp-ipv4-00 diff --git a/Documentation/networking/ipvs-sysctl.txt b/Documentation/networking/ipvs-sysctl.txt index 4ccdbca..f2a2488 100644 --- a/Documentation/networking/ipvs-sysctl.txt +++ b/Documentation/networking/ipvs-sysctl.txt @@ -15,6 +15,23 @@ amemthresh - INTEGER enabled and the variable is automatically set to 2, otherwise the strategy is disabled and the variable is set to 1. +conntrack - BOOLEAN + 0 - disabled (default) + not 0 - enabled + + If set, maintain connection tracking entries for + connections handled by IPVS. + + This should be enabled if connections handled by IPVS are to be + also handled by stateful firewall rules. That is, iptables rules + that make use of connection tracking. It is a performance + optimisation to disable this setting otherwise. + + Connections handled by the IPVS FTP application module + will have connection tracking entries regardless of this setting. + + Only available when IPVS is compiled with CONFIG_IP_VS_NFCT enabled. + cache_bypass - BOOLEAN 0 - disabled (default) not 0 - enabled @@ -39,7 +56,7 @@ debug_level - INTEGER 11 - IPVS packet handling (ip_vs_in/ip_vs_out) 12 or more - packet traversal - Only available when IPVS is compiled with the CONFIG_IPVS_DEBUG + Only available when IPVS is compiled with CONFIG_IP_VS_DEBUG enabled. Higher debugging levels include the messages for lower debugging levels, so setting debug level 2, includes level 0, 1 and 2 @@ -123,13 +140,11 @@ nat_icmp_send - BOOLEAN secure_tcp - INTEGER 0 - disabled (default) - The secure_tcp defense is to use a more complicated state - transition table and some possible short timeouts of each - state. In the VS/NAT, it delays the entering the ESTABLISHED - until the real server starts to send data and ACK packet - (after 3-way handshake). + The secure_tcp defense is to use a more complicated TCP state + transition table. For VS/NAT, it also delays entering the + TCP ESTABLISHED state until the three way handshake is completed. - The value definition is the same as that of drop_entry or + The value definition is the same as that of drop_entry and drop_packet. sync_threshold - INTEGER @@ -141,3 +156,36 @@ sync_threshold - INTEGER synchronized, every time the number of its incoming packets modulus 50 equals the threshold. The range of the threshold is from 0 to 49. + +snat_reroute - BOOLEAN + 0 - disabled + not 0 - enabled (default) + + If enabled, recalculate the route of SNATed packets from + realservers so that they are routed as if they originate from the + director. Otherwise they are routed as if they are forwarded by the + director. + + If policy routing is in effect then it is possible that the route + of a packet originating from a director is routed differently to a + packet being forwarded by the director. + + If policy routing is not in effect then the recalculated route will + always be the same as the original route so it is an optimisation + to disable snat_reroute and avoid the recalculation. + +sync_version - INTEGER + default 1 + + The version of the synchronisation protocol used when sending + synchronisation messages. + + 0 selects the original synchronisation protocol (version 0). This + should be used when sending synchronisation messages to a legacy + system that only understands the original synchronisation protocol. + + 1 selects the current synchronisation protocol (version 1). This + should be used where possible. + + Kernels with this sync_version entry are able to receive messages + of both version 1 and version 2 of the synchronisation protocol. diff --git a/Documentation/networking/mac80211-injection.txt b/Documentation/networking/mac80211-injection.txt index b30e81a..3a93007 100644 --- a/Documentation/networking/mac80211-injection.txt +++ b/Documentation/networking/mac80211-injection.txt @@ -23,6 +23,10 @@ radiotap headers and used to control injection: IEEE80211_RADIOTAP_F_FRAG: frame will be fragmented if longer than the current fragmentation threshold. + * IEEE80211_RADIOTAP_TX_FLAGS + + IEEE80211_RADIOTAP_F_TX_NOACK: frame should be sent without waiting for + an ACK even if it is a unicast frame The injection code can also skip all other currently defined radiotap fields facilitating replay of captured radiotap headers directly. diff --git a/Documentation/networking/netdev-features.txt b/Documentation/networking/netdev-features.txt new file mode 100644 index 0000000..4b1c0dc --- /dev/null +++ b/Documentation/networking/netdev-features.txt @@ -0,0 +1,154 @@ +Netdev features mess and how to get out from it alive +===================================================== + +Author: + Michał Mirosław <mirq-linux@rere.qmqm.pl> + + + + Part I: Feature sets +====================== + +Long gone are the days when a network card would just take and give packets +verbatim. Today's devices add multiple features and bugs (read: offloads) +that relieve an OS of various tasks like generating and checking checksums, +splitting packets, classifying them. Those capabilities and their state +are commonly referred to as netdev features in Linux kernel world. + +There are currently three sets of features relevant to the driver, and +one used internally by network core: + + 1. netdev->hw_features set contains features whose state may possibly + be changed (enabled or disabled) for a particular device by user's + request. This set should be initialized in ndo_init callback and not + changed later. + + 2. netdev->features set contains features which are currently enabled + for a device. This should be changed only by network core or in + error paths of ndo_set_features callback. + + 3. netdev->vlan_features set contains features whose state is inherited + by child VLAN devices (limits netdev->features set). This is currently + used for all VLAN devices whether tags are stripped or inserted in + hardware or software. + + 4. netdev->wanted_features set contains feature set requested by user. + This set is filtered by ndo_fix_features callback whenever it or + some device-specific conditions change. This set is internal to + networking core and should not be referenced in drivers. + + + + Part II: Controlling enabled features +======================================= + +When current feature set (netdev->features) is to be changed, new set +is calculated and filtered by calling ndo_fix_features callback +and netdev_fix_features(). If the resulting set differs from current +set, it is passed to ndo_set_features callback and (if the callback +returns success) replaces value stored in netdev->features. +NETDEV_FEAT_CHANGE notification is issued after that whenever current +set might have changed. + +The following events trigger recalculation: + 1. device's registration, after ndo_init returned success + 2. user requested changes in features state + 3. netdev_update_features() is called + +ndo_*_features callbacks are called with rtnl_lock held. Missing callbacks +are treated as always returning success. + +A driver that wants to trigger recalculation must do so by calling +netdev_update_features() while holding rtnl_lock. This should not be done +from ndo_*_features callbacks. netdev->features should not be modified by +driver except by means of ndo_fix_features callback. + + + + Part III: Implementation hints +================================ + + * ndo_fix_features: + +All dependencies between features should be resolved here. The resulting +set can be reduced further by networking core imposed limitations (as coded +in netdev_fix_features()). For this reason it is safer to disable a feature +when its dependencies are not met instead of forcing the dependency on. + +This callback should not modify hardware nor driver state (should be +stateless). It can be called multiple times between successive +ndo_set_features calls. + +Callback must not alter features contained in NETIF_F_SOFT_FEATURES or +NETIF_F_NEVER_CHANGE sets. The exception is NETIF_F_VLAN_CHALLENGED but +care must be taken as the change won't affect already configured VLANs. + + * ndo_set_features: + +Hardware should be reconfigured to match passed feature set. The set +should not be altered unless some error condition happens that can't +be reliably detected in ndo_fix_features. In this case, the callback +should update netdev->features to match resulting hardware state. +Errors returned are not (and cannot be) propagated anywhere except dmesg. +(Note: successful return is zero, >0 means silent error.) + + + + Part IV: Features +=================== + +For current list of features, see include/linux/netdev_features.h. +This section describes semantics of some of them. + + * Transmit checksumming + +For complete description, see comments near the top of include/linux/skbuff.h. + +Note: NETIF_F_HW_CSUM is a superset of NETIF_F_IP_CSUM + NETIF_F_IPV6_CSUM. +It means that device can fill TCP/UDP-like checksum anywhere in the packets +whatever headers there might be. + + * Transmit TCP segmentation offload + +NETIF_F_TSO_ECN means that hardware can properly split packets with CWR bit +set, be it TCPv4 (when NETIF_F_TSO is enabled) or TCPv6 (NETIF_F_TSO6). + + * Transmit DMA from high memory + +On platforms where this is relevant, NETIF_F_HIGHDMA signals that +ndo_start_xmit can handle skbs with frags in high memory. + + * Transmit scatter-gather + +Those features say that ndo_start_xmit can handle fragmented skbs: +NETIF_F_SG --- paged skbs (skb_shinfo()->frags), NETIF_F_FRAGLIST --- +chained skbs (skb->next/prev list). + + * Software features + +Features contained in NETIF_F_SOFT_FEATURES are features of networking +stack. Driver should not change behaviour based on them. + + * LLTX driver (deprecated for hardware drivers) + +NETIF_F_LLTX should be set in drivers that implement their own locking in +transmit path or don't need locking at all (e.g. software tunnels). +In ndo_start_xmit, it is recommended to use a try_lock and return +NETDEV_TX_LOCKED when the spin lock fails. The locking should also properly +protect against other callbacks (the rules you need to find out). + +Don't use it for new drivers. + + * netns-local device + +NETIF_F_NETNS_LOCAL is set for devices that are not allowed to move between +network namespaces (e.g. loopback). + +Don't use it in drivers. + + * VLAN challenged + +NETIF_F_VLAN_CHALLENGED should be set for devices which can't cope with VLAN +headers. Some drivers set this because the cards can't handle the bigger MTU. +[FIXME: Those cases could be fixed in VLAN code by allowing only reduced-MTU +VLANs. This may be not useful, though.] diff --git a/Documentation/networking/netdevices.txt b/Documentation/networking/netdevices.txt index 87b3d15..8935834 100644 --- a/Documentation/networking/netdevices.txt +++ b/Documentation/networking/netdevices.txt @@ -73,7 +73,7 @@ dev->hard_start_xmit: has to lock by itself when needed. It is recommended to use a try lock for this and return NETDEV_TX_LOCKED when the spin lock fails. The locking there should also properly protect against - set_multicast_list. Note that the use of NETIF_F_LLTX is deprecated. + set_rx_mode. Note that the use of NETIF_F_LLTX is deprecated. Don't use it for new drivers. Context: Process with BHs disabled or BH (timer), @@ -92,7 +92,7 @@ dev->tx_timeout: Context: BHs disabled Notes: netif_queue_stopped() is guaranteed true -dev->set_multicast_list: +dev->set_rx_mode: Synchronization: netif_tx_lock spinlock. Context: BHs disabled diff --git a/Documentation/networking/nfc.txt b/Documentation/networking/nfc.txt new file mode 100644 index 0000000..b24c29b --- /dev/null +++ b/Documentation/networking/nfc.txt @@ -0,0 +1,128 @@ +Linux NFC subsystem +=================== + +The Near Field Communication (NFC) subsystem is required to standardize the +NFC device drivers development and to create an unified userspace interface. + +This document covers the architecture overview, the device driver interface +description and the userspace interface description. + +Architecture overview +--------------------- + +The NFC subsystem is responsible for: + - NFC adapters management; + - Polling for targets; + - Low-level data exchange; + +The subsystem is divided in some parts. The 'core' is responsible for +providing the device driver interface. On the other side, it is also +responsible for providing an interface to control operations and low-level +data exchange. + +The control operations are available to userspace via generic netlink. + +The low-level data exchange interface is provided by the new socket family +PF_NFC. The NFC_SOCKPROTO_RAW performs raw communication with NFC targets. + + + +--------------------------------------+ + | USER SPACE | + +--------------------------------------+ + ^ ^ + | low-level | control + | data exchange | operations + | | + | v + | +-----------+ + | AF_NFC | netlink | + | socket +-----------+ + | raw ^ + | | + v v + +---------+ +-----------+ + | rawsock | <--------> | core | + +---------+ +-----------+ + ^ + | + v + +-----------+ + | driver | + +-----------+ + +Device Driver Interface +----------------------- + +When registering on the NFC subsystem, the device driver must inform the core +of the set of supported NFC protocols and the set of ops callbacks. The ops +callbacks that must be implemented are the following: + +* start_poll - setup the device to poll for targets +* stop_poll - stop on progress polling operation +* activate_target - select and initialize one of the targets found +* deactivate_target - deselect and deinitialize the selected target +* data_exchange - send data and receive the response (transceive operation) + +Userspace interface +-------------------- + +The userspace interface is divided in control operations and low-level data +exchange operation. + +CONTROL OPERATIONS: + +Generic netlink is used to implement the interface to the control operations. +The operations are composed by commands and events, all listed below: + +* NFC_CMD_GET_DEVICE - get specific device info or dump the device list +* NFC_CMD_START_POLL - setup a specific device to polling for targets +* NFC_CMD_STOP_POLL - stop the polling operation in a specific device +* NFC_CMD_GET_TARGET - dump the list of targets found by a specific device + +* NFC_EVENT_DEVICE_ADDED - reports an NFC device addition +* NFC_EVENT_DEVICE_REMOVED - reports an NFC device removal +* NFC_EVENT_TARGETS_FOUND - reports START_POLL results when 1 or more targets +are found + +The user must call START_POLL to poll for NFC targets, passing the desired NFC +protocols through NFC_ATTR_PROTOCOLS attribute. The device remains in polling +state until it finds any target. However, the user can stop the polling +operation by calling STOP_POLL command. In this case, it will be checked if +the requester of STOP_POLL is the same of START_POLL. + +If the polling operation finds one or more targets, the event TARGETS_FOUND is +sent (including the device id). The user must call GET_TARGET to get the list of +all targets found by such device. Each reply message has target attributes with +relevant information such as the supported NFC protocols. + +All polling operations requested through one netlink socket are stopped when +it's closed. + +LOW-LEVEL DATA EXCHANGE: + +The userspace must use PF_NFC sockets to perform any data communication with +targets. All NFC sockets use AF_NFC: + +struct sockaddr_nfc { + sa_family_t sa_family; + __u32 dev_idx; + __u32 target_idx; + __u32 nfc_protocol; +}; + +To establish a connection with one target, the user must create an +NFC_SOCKPROTO_RAW socket and call the 'connect' syscall with the sockaddr_nfc +struct correctly filled. All information comes from NFC_EVENT_TARGETS_FOUND +netlink event. As a target can support more than one NFC protocol, the user +must inform which protocol it wants to use. + +Internally, 'connect' will result in an activate_target call to the driver. +When the socket is closed, the target is deactivated. + +The data format exchanged through the sockets is NFC protocol dependent. For +instance, when communicating with MIFARE tags, the data exchanged are MIFARE +commands and their responses. + +The first received package is the response to the first sent package and so +on. In order to allow valid "empty" responses, every data received has a NULL +header of 1 byte. diff --git a/Documentation/networking/rds.txt b/Documentation/networking/rds.txt index c67077c..e1a3d59 100644 --- a/Documentation/networking/rds.txt +++ b/Documentation/networking/rds.txt @@ -62,11 +62,10 @@ Socket Interface ================ AF_RDS, PF_RDS, SOL_RDS - These constants haven't been assigned yet, because RDS isn't in - mainline yet. Currently, the kernel module assigns some constant - and publishes it to user space through two sysctl files - /proc/sys/net/rds/pf_rds - /proc/sys/net/rds/sol_rds + AF_RDS and PF_RDS are the domain type to be used with socket(2) + to create RDS sockets. SOL_RDS is the socket-level to be used + with setsockopt(2) and getsockopt(2) for RDS specific socket + options. fd = socket(PF_RDS, SOCK_SEQPACKET, 0); This creates a new, unbound RDS socket. diff --git a/Documentation/networking/scaling.txt b/Documentation/networking/scaling.txt new file mode 100644 index 0000000..a177de2 --- /dev/null +++ b/Documentation/networking/scaling.txt @@ -0,0 +1,378 @@ +Scaling in the Linux Networking Stack + + +Introduction +============ + +This document describes a set of complementary techniques in the Linux +networking stack to increase parallelism and improve performance for +multi-processor systems. + +The following technologies are described: + + RSS: Receive Side Scaling + RPS: Receive Packet Steering + RFS: Receive Flow Steering + Accelerated Receive Flow Steering + XPS: Transmit Packet Steering + + +RSS: Receive Side Scaling +========================= + +Contemporary NICs support multiple receive and transmit descriptor queues +(multi-queue). On reception, a NIC can send different packets to different +queues to distribute processing among CPUs. The NIC distributes packets by +applying a filter to each packet that assigns it to one of a small number +of logical flows. Packets for each flow are steered to a separate receive +queue, which in turn can be processed by separate CPUs. This mechanism is +generally known as “Receive-side Scaling” (RSS). The goal of RSS and +the other scaling techniques is to increase performance uniformly. +Multi-queue distribution can also be used for traffic prioritization, but +that is not the focus of these techniques. + +The filter used in RSS is typically a hash function over the network +and/or transport layer headers-- for example, a 4-tuple hash over +IP addresses and TCP ports of a packet. The most common hardware +implementation of RSS uses a 128-entry indirection table where each entry +stores a queue number. The receive queue for a packet is determined +by masking out the low order seven bits of the computed hash for the +packet (usually a Toeplitz hash), taking this number as a key into the +indirection table and reading the corresponding value. + +Some advanced NICs allow steering packets to queues based on +programmable filters. For example, webserver bound TCP port 80 packets +can be directed to their own receive queue. Such “n-tuple” filters can +be configured from ethtool (--config-ntuple). + +==== RSS Configuration + +The driver for a multi-queue capable NIC typically provides a kernel +module parameter for specifying the number of hardware queues to +configure. In the bnx2x driver, for instance, this parameter is called +num_queues. A typical RSS configuration would be to have one receive queue +for each CPU if the device supports enough queues, or otherwise at least +one for each memory domain, where a memory domain is a set of CPUs that +share a particular memory level (L1, L2, NUMA node, etc.). + +The indirection table of an RSS device, which resolves a queue by masked +hash, is usually programmed by the driver at initialization. The +default mapping is to distribute the queues evenly in the table, but the +indirection table can be retrieved and modified at runtime using ethtool +commands (--show-rxfh-indir and --set-rxfh-indir). Modifying the +indirection table could be done to give different queues different +relative weights. + +== RSS IRQ Configuration + +Each receive queue has a separate IRQ associated with it. The NIC triggers +this to notify a CPU when new packets arrive on the given queue. The +signaling path for PCIe devices uses message signaled interrupts (MSI-X), +that can route each interrupt to a particular CPU. The active mapping +of queues to IRQs can be determined from /proc/interrupts. By default, +an IRQ may be handled on any CPU. Because a non-negligible part of packet +processing takes place in receive interrupt handling, it is advantageous +to spread receive interrupts between CPUs. To manually adjust the IRQ +affinity of each interrupt see Documentation/IRQ-affinity.txt. Some systems +will be running irqbalance, a daemon that dynamically optimizes IRQ +assignments and as a result may override any manual settings. + +== Suggested Configuration + +RSS should be enabled when latency is a concern or whenever receive +interrupt processing forms a bottleneck. Spreading load between CPUs +decreases queue length. For low latency networking, the optimal setting +is to allocate as many queues as there are CPUs in the system (or the +NIC maximum, if lower). The most efficient high-rate configuration +is likely the one with the smallest number of receive queues where no +receive queue overflows due to a saturated CPU, because in default +mode with interrupt coalescing enabled, the aggregate number of +interrupts (and thus work) grows with each additional queue. + +Per-cpu load can be observed using the mpstat utility, but note that on +processors with hyperthreading (HT), each hyperthread is represented as +a separate CPU. For interrupt handling, HT has shown no benefit in +initial tests, so limit the number of queues to the number of CPU cores +in the system. + + +RPS: Receive Packet Steering +============================ + +Receive Packet Steering (RPS) is logically a software implementation of +RSS. Being in software, it is necessarily called later in the datapath. +Whereas RSS selects the queue and hence CPU that will run the hardware +interrupt handler, RPS selects the CPU to perform protocol processing +above the interrupt handler. This is accomplished by placing the packet +on the desired CPU’s backlog queue and waking up the CPU for processing. +RPS has some advantages over RSS: 1) it can be used with any NIC, +2) software filters can easily be added to hash over new protocols, +3) it does not increase hardware device interrupt rate (although it does +introduce inter-processor interrupts (IPIs)). + +RPS is called during bottom half of the receive interrupt handler, when +a driver sends a packet up the network stack with netif_rx() or +netif_receive_skb(). These call the get_rps_cpu() function, which +selects the queue that should process a packet. + +The first step in determining the target CPU for RPS is to calculate a +flow hash over the packet’s addresses or ports (2-tuple or 4-tuple hash +depending on the protocol). This serves as a consistent hash of the +associated flow of the packet. The hash is either provided by hardware +or will be computed in the stack. Capable hardware can pass the hash in +the receive descriptor for the packet; this would usually be the same +hash used for RSS (e.g. computed Toeplitz hash). The hash is saved in +skb->rx_hash and can be used elsewhere in the stack as a hash of the +packet’s flow. + +Each receive hardware queue has an associated list of CPUs to which +RPS may enqueue packets for processing. For each received packet, +an index into the list is computed from the flow hash modulo the size +of the list. The indexed CPU is the target for processing the packet, +and the packet is queued to the tail of that CPU’s backlog queue. At +the end of the bottom half routine, IPIs are sent to any CPUs for which +packets have been queued to their backlog queue. The IPI wakes backlog +processing on the remote CPU, and any queued packets are then processed +up the networking stack. + +==== RPS Configuration + +RPS requires a kernel compiled with the CONFIG_RPS kconfig symbol (on +by default for SMP). Even when compiled in, RPS remains disabled until +explicitly configured. The list of CPUs to which RPS may forward traffic +can be configured for each receive queue using a sysfs file entry: + + /sys/class/net/<dev>/queues/rx-<n>/rps_cpus + +This file implements a bitmap of CPUs. RPS is disabled when it is zero +(the default), in which case packets are processed on the interrupting +CPU. Documentation/IRQ-affinity.txt explains how CPUs are assigned to +the bitmap. + +== Suggested Configuration + +For a single queue device, a typical RPS configuration would be to set +the rps_cpus to the CPUs in the same memory domain of the interrupting +CPU. If NUMA locality is not an issue, this could also be all CPUs in +the system. At high interrupt rate, it might be wise to exclude the +interrupting CPU from the map since that already performs much work. + +For a multi-queue system, if RSS is configured so that a hardware +receive queue is mapped to each CPU, then RPS is probably redundant +and unnecessary. If there are fewer hardware queues than CPUs, then +RPS might be beneficial if the rps_cpus for each queue are the ones that +share the same memory domain as the interrupting CPU for that queue. + + +RFS: Receive Flow Steering +========================== + +While RPS steers packets solely based on hash, and thus generally +provides good load distribution, it does not take into account +application locality. This is accomplished by Receive Flow Steering +(RFS). The goal of RFS is to increase datacache hitrate by steering +kernel processing of packets to the CPU where the application thread +consuming the packet is running. RFS relies on the same RPS mechanisms +to enqueue packets onto the backlog of another CPU and to wake up that +CPU. + +In RFS, packets are not forwarded directly by the value of their hash, +but the hash is used as index into a flow lookup table. This table maps +flows to the CPUs where those flows are being processed. The flow hash +(see RPS section above) is used to calculate the index into this table. +The CPU recorded in each entry is the one which last processed the flow. +If an entry does not hold a valid CPU, then packets mapped to that entry +are steered using plain RPS. Multiple table entries may point to the +same CPU. Indeed, with many flows and few CPUs, it is very likely that +a single application thread handles flows with many different flow hashes. + +rps_sock_flow_table is a global flow table that contains the *desired* CPU +for flows: the CPU that is currently processing the flow in userspace. +Each table value is a CPU index that is updated during calls to recvmsg +and sendmsg (specifically, inet_recvmsg(), inet_sendmsg(), inet_sendpage() +and tcp_splice_read()). + +When the scheduler moves a thread to a new CPU while it has outstanding +receive packets on the old CPU, packets may arrive out of order. To +avoid this, RFS uses a second flow table to track outstanding packets +for each flow: rps_dev_flow_table is a table specific to each hardware +receive queue of each device. Each table value stores a CPU index and a +counter. The CPU index represents the *current* CPU onto which packets +for this flow are enqueued for further kernel processing. Ideally, kernel +and userspace processing occur on the same CPU, and hence the CPU index +in both tables is identical. This is likely false if the scheduler has +recently migrated a userspace thread while the kernel still has packets +enqueued for kernel processing on the old CPU. + +The counter in rps_dev_flow_table values records the length of the current +CPU's backlog when a packet in this flow was last enqueued. Each backlog +queue has a head counter that is incremented on dequeue. A tail counter +is computed as head counter + queue length. In other words, the counter +in rps_dev_flow_table[i] records the last element in flow i that has +been enqueued onto the currently designated CPU for flow i (of course, +entry i is actually selected by hash and multiple flows may hash to the +same entry i). + +And now the trick for avoiding out of order packets: when selecting the +CPU for packet processing (from get_rps_cpu()) the rps_sock_flow table +and the rps_dev_flow table of the queue that the packet was received on +are compared. If the desired CPU for the flow (found in the +rps_sock_flow table) matches the current CPU (found in the rps_dev_flow +table), the packet is enqueued onto that CPU’s backlog. If they differ, +the current CPU is updated to match the desired CPU if one of the +following is true: + +- The current CPU's queue head counter >= the recorded tail counter + value in rps_dev_flow[i] +- The current CPU is unset (equal to NR_CPUS) +- The current CPU is offline + +After this check, the packet is sent to the (possibly updated) current +CPU. These rules aim to ensure that a flow only moves to a new CPU when +there are no packets outstanding on the old CPU, as the outstanding +packets could arrive later than those about to be processed on the new +CPU. + +==== RFS Configuration + +RFS is only available if the kconfig symbol CONFIG_RFS is enabled (on +by default for SMP). The functionality remains disabled until explicitly +configured. The number of entries in the global flow table is set through: + + /proc/sys/net/core/rps_sock_flow_entries + +The number of entries in the per-queue flow table are set through: + + /sys/class/net/<dev>/queues/rx-<n>/rps_flow_cnt + +== Suggested Configuration + +Both of these need to be set before RFS is enabled for a receive queue. +Values for both are rounded up to the nearest power of two. The +suggested flow count depends on the expected number of active connections +at any given time, which may be significantly less than the number of open +connections. We have found that a value of 32768 for rps_sock_flow_entries +works fairly well on a moderately loaded server. + +For a single queue device, the rps_flow_cnt value for the single queue +would normally be configured to the same value as rps_sock_flow_entries. +For a multi-queue device, the rps_flow_cnt for each queue might be +configured as rps_sock_flow_entries / N, where N is the number of +queues. So for instance, if rps_flow_entries is set to 32768 and there +are 16 configured receive queues, rps_flow_cnt for each queue might be +configured as 2048. + + +Accelerated RFS +=============== + +Accelerated RFS is to RFS what RSS is to RPS: a hardware-accelerated load +balancing mechanism that uses soft state to steer flows based on where +the application thread consuming the packets of each flow is running. +Accelerated RFS should perform better than RFS since packets are sent +directly to a CPU local to the thread consuming the data. The target CPU +will either be the same CPU where the application runs, or at least a CPU +which is local to the application thread’s CPU in the cache hierarchy. + +To enable accelerated RFS, the networking stack calls the +ndo_rx_flow_steer driver function to communicate the desired hardware +queue for packets matching a particular flow. The network stack +automatically calls this function every time a flow entry in +rps_dev_flow_table is updated. The driver in turn uses a device specific +method to program the NIC to steer the packets. + +The hardware queue for a flow is derived from the CPU recorded in +rps_dev_flow_table. The stack consults a CPU to hardware queue map which +is maintained by the NIC driver. This is an auto-generated reverse map of +the IRQ affinity table shown by /proc/interrupts. Drivers can use +functions in the cpu_rmap (“CPU affinity reverse map”) kernel library +to populate the map. For each CPU, the corresponding queue in the map is +set to be one whose processing CPU is closest in cache locality. + +==== Accelerated RFS Configuration + +Accelerated RFS is only available if the kernel is compiled with +CONFIG_RFS_ACCEL and support is provided by the NIC device and driver. +It also requires that ntuple filtering is enabled via ethtool. The map +of CPU to queues is automatically deduced from the IRQ affinities +configured for each receive queue by the driver, so no additional +configuration should be necessary. + +== Suggested Configuration + +This technique should be enabled whenever one wants to use RFS and the +NIC supports hardware acceleration. + +XPS: Transmit Packet Steering +============================= + +Transmit Packet Steering is a mechanism for intelligently selecting +which transmit queue to use when transmitting a packet on a multi-queue +device. To accomplish this, a mapping from CPU to hardware queue(s) is +recorded. The goal of this mapping is usually to assign queues +exclusively to a subset of CPUs, where the transmit completions for +these queues are processed on a CPU within this set. This choice +provides two benefits. First, contention on the device queue lock is +significantly reduced since fewer CPUs contend for the same queue +(contention can be eliminated completely if each CPU has its own +transmit queue). Secondly, cache miss rate on transmit completion is +reduced, in particular for data cache lines that hold the sk_buff +structures. + +XPS is configured per transmit queue by setting a bitmap of CPUs that +may use that queue to transmit. The reverse mapping, from CPUs to +transmit queues, is computed and maintained for each network device. +When transmitting the first packet in a flow, the function +get_xps_queue() is called to select a queue. This function uses the ID +of the running CPU as a key into the CPU-to-queue lookup table. If the +ID matches a single queue, that is used for transmission. If multiple +queues match, one is selected by using the flow hash to compute an index +into the set. + +The queue chosen for transmitting a particular flow is saved in the +corresponding socket structure for the flow (e.g. a TCP connection). +This transmit queue is used for subsequent packets sent on the flow to +prevent out of order (ooo) packets. The choice also amortizes the cost +of calling get_xps_queues() over all packets in the flow. To avoid +ooo packets, the queue for a flow can subsequently only be changed if +skb->ooo_okay is set for a packet in the flow. This flag indicates that +there are no outstanding packets in the flow, so the transmit queue can +change without the risk of generating out of order packets. The +transport layer is responsible for setting ooo_okay appropriately. TCP, +for instance, sets the flag when all data for a connection has been +acknowledged. + +==== XPS Configuration + +XPS is only available if the kconfig symbol CONFIG_XPS is enabled (on by +default for SMP). The functionality remains disabled until explicitly +configured. To enable XPS, the bitmap of CPUs that may use a transmit +queue is configured using the sysfs file entry: + +/sys/class/net/<dev>/queues/tx-<n>/xps_cpus + +== Suggested Configuration + +For a network device with a single transmission queue, XPS configuration +has no effect, since there is no choice in this case. In a multi-queue +system, XPS is preferably configured so that each CPU maps onto one queue. +If there are as many queues as there are CPUs in the system, then each +queue can also map onto one CPU, resulting in exclusive pairings that +experience no contention. If there are fewer queues than CPUs, then the +best CPUs to share a given queue are probably those that share the cache +with the CPU that processes transmit completions for that queue +(transmit interrupts). + + +Further Information +=================== +RPS and RFS were introduced in kernel 2.6.35. XPS was incorporated into +2.6.38. Original patches were submitted by Tom Herbert +(therbert@google.com) + +Accelerated RFS was introduced in 2.6.35. Original patches were +submitted by Ben Hutchings (bhutchings@solarflare.com) + +Authors: +Tom Herbert (therbert@google.com) +Willem de Bruijn (willemb@google.com) diff --git a/Documentation/networking/stmmac.txt b/Documentation/networking/stmmac.txt index 80a7a34..8d67980 100644 --- a/Documentation/networking/stmmac.txt +++ b/Documentation/networking/stmmac.txt @@ -7,7 +7,7 @@ This is the driver for the MAC 10/100/1000 on-chip Ethernet controllers (Synopsys IP blocks); it has been fully tested on STLinux platforms. Currently this network device driver is for all STM embedded MAC/GMAC -(7xxx SoCs). Other platforms start using it i.e. ARM SPEAr. +(i.e. 7xxx/5xxx SoCs) and it's known working on other platforms i.e. ARM SPEAr. DWC Ether MAC 10/100/1000 Universal version 3.41a and DWC Ether MAC 10/100 Universal version 4.0 have been used for developing the first code @@ -71,12 +71,21 @@ Several performance tests on STM platforms showed this optimisation allows to sp the CPU while having the maximum throughput. 4.4) WOL -Wake up on Lan feature through Magic Frame is only supported for the GMAC +Wake up on Lan feature through Magic and Unicast frames are supported for the GMAC core. 4.5) DMA descriptors Driver handles both normal and enhanced descriptors. The latter has been only -tested on DWC Ether MAC 10/100/1000 Universal version 3.41a. +tested on DWC Ether MAC 10/100/1000 Universal version 3.41a and later. + +STMMAC supports DMA descriptor to operate both in dual buffer (RING) +and linked-list(CHAINED) mode. In RING each descriptor points to two +data buffer pointers whereas in CHAINED mode they point to only one data +buffer pointer. RING mode is the default. + +In CHAINED mode each descriptor will have pointer to next descriptor in +the list, hence creating the explicit chaining in the descriptor itself, +whereas such explicit chaining is not possible in RING mode. 4.6) Ethtool support Ethtool is supported. Driver statistics and internal errors can be taken using: @@ -91,11 +100,15 @@ LRO is not supported. The driver is compatible with PAL to work with PHY and GPHY devices. 4.9) Platform information -Several information came from the platform; please refer to the -driver's Header file in include/linux directory. +Several driver's information can be passed through the platform +These are included in the include/linux/stmmac.h header file +and detailed below as well: -struct plat_stmmacenet_data { + struct plat_stmmacenet_data { int bus_id; + int phy_addr; + int interface; + struct stmmac_mdio_bus_data *mdio_bus_data; int pbl; int clk_csr; int has_gmac; @@ -103,67 +116,166 @@ struct plat_stmmacenet_data { int tx_coe; int bugged_jumbo; int pmt; - void (*fix_mac_speed)(void *priv, unsigned int speed); - void (*bus_setup)(unsigned long ioaddr); -#ifdef CONFIG_STM_DRIVERS - struct stm_pad_config *pad_config; -#endif - void *bsp_priv; -}; + int force_sf_dma_mode; + void (*fix_mac_speed)(void *priv, unsigned int speed); + void (*bus_setup)(void __iomem *ioaddr); + int (*init)(struct platform_device *pdev); + void (*exit)(struct platform_device *pdev); + void *bsp_priv; + }; Where: -- pbl (Programmable Burst Length) is maximum number of - beats to be transferred in one DMA transaction. - GMAC also enables the 4xPBL by default. -- fix_mac_speed and bus_setup are used to configure internal target - registers (on STM platforms); -- has_gmac: GMAC core is on board (get it at run-time in the next step); -- bus_id: bus identifier. -- tx_coe: core is able to perform the tx csum in HW. -- enh_desc: if sets the MAC will use the enhanced descriptor structure. -- clk_csr: CSR Clock range selection. -- bugged_jumbo: some HWs are not able to perform the csum in HW for - over-sized frames due to limited buffer sizes. Setting this - flag the csum will be done in SW on JUMBO frames. - -struct plat_stmmacphy_data { - int bus_id; - int phy_addr; - unsigned int phy_mask; - int interface; - int (*phy_reset)(void *priv); - void *priv; -}; + o bus_id: bus identifier. + o phy_addr: the physical address can be passed from the platform. + If it is set to -1 the driver will automatically + detect it at run-time by probing all the 32 addresses. + o interface: PHY device's interface. + o mdio_bus_data: specific platform fields for the MDIO bus. + o pbl: the Programmable Burst Length is maximum number of beats to + be transferred in one DMA transaction. + GMAC also enables the 4xPBL by default. + o clk_csr: CSR Clock range selection. + o has_gmac: uses the GMAC core. + o enh_desc: if sets the MAC will use the enhanced descriptor structure. + o tx_coe: core is able to perform the tx csum in HW. + o bugged_jumbo: some HWs are not able to perform the csum in HW for + over-sized frames due to limited buffer sizes. + Setting this flag the csum will be done in SW on + JUMBO frames. + o pmt: core has the embedded power module (optional). + o force_sf_dma_mode: force DMA to use the Store and Forward mode + instead of the Threshold. + o fix_mac_speed: this callback is used for modifying some syscfg registers + (on ST SoCs) according to the link speed negotiated by the + physical layer . + o bus_setup: perform HW setup of the bus. For example, on some ST platforms + this field is used to configure the AMBA bridge to generate more + efficient STBus traffic. + o init/exit: callbacks used for calling a custom initialisation; + this is sometime necessary on some platforms (e.g. ST boxes) + where the HW needs to have set some PIO lines or system cfg + registers. + o custom_cfg: this is a custom configuration that can be passed while + initialising the resources. + +The we have: + + struct stmmac_mdio_bus_data { + int bus_id; + int (*phy_reset)(void *priv); + unsigned int phy_mask; + int *irqs; + int probed_phy_irq; + }; Where: -- bus_id: bus identifier; -- phy_addr: physical address used for the attached phy device; - set it to -1 to get it at run-time; -- interface: physical MII interface mode; -- phy_reset: hook to reset HW function. - -SOURCES: -- Kconfig -- Makefile -- stmmac_main.c: main network device driver; -- stmmac_mdio.c: mdio functions; -- stmmac_ethtool.c: ethtool support; -- stmmac_timer.[ch]: timer code used for mitigating the driver dma interrupts - Only tested on ST40 platforms based. -- stmmac.h: private driver structure; -- common.h: common definitions and VFTs; -- descs.h: descriptor structure definitions; -- dwmac1000_core.c: GMAC core functions; -- dwmac1000_dma.c: dma functions for the GMAC chip; -- dwmac1000.h: specific header file for the GMAC; -- dwmac100_core: MAC 100 core and dma code; -- dwmac100_dma.c: dma funtions for the MAC chip; -- dwmac1000.h: specific header file for the MAC; -- dwmac_lib.c: generic DMA functions shared among chips -- enh_desc.c: functions for handling enhanced descriptors -- norm_desc.c: functions for handling normal descriptors - -TODO: -- XGMAC controller is not supported. -- Review the timer optimisation code to use an embedded device that seems to be + o bus_id: bus identifier; + o phy_reset: hook to reset the phy device attached to the bus. + o phy_mask: phy mask passed when register the MDIO bus within the driver. + o irqs: list of IRQs, one per PHY. + o probed_phy_irq: if irqs is NULL, use this for probed PHY. + +Below an example how the structures above are using on ST platforms. + + static struct plat_stmmacenet_data stxYYY_ethernet_platform_data = { + .pbl = 32, + .has_gmac = 0, + .enh_desc = 0, + .fix_mac_speed = stxYYY_ethernet_fix_mac_speed, + | + |-> to write an internal syscfg + | on this platform when the + | link speed changes from 10 to + | 100 and viceversa + .init = &stmmac_claim_resource, + | + |-> On ST SoC this calls own "PAD" + | manager framework to claim + | all the resources necessary + | (GPIO ...). The .custom_cfg field + | is used to pass a custom config. +}; + +Below the usage of the stmmac_mdio_bus_data: on this SoC, in fact, +there are two MAC cores: one MAC is for MDIO Bus/PHY emulation +with fixed_link support. + +static struct stmmac_mdio_bus_data stmmac1_mdio_bus = { + .bus_id = 1, + | + |-> phy device on the bus_id 1 + .phy_reset = phy_reset; + | + |-> function to provide the phy_reset on this board + .phy_mask = 0, +}; + +static struct fixed_phy_status stmmac0_fixed_phy_status = { + .link = 1, + .speed = 100, + .duplex = 1, +}; + +During the board's device_init we can configure the first +MAC for fixed_link by calling: + fixed_phy_add(PHY_POLL, 1, &stmmac0_fixed_phy_status));) +and the second one, with a real PHY device attached to the bus, +by using the stmmac_mdio_bus_data structure (to provide the id, the +reset procedure etc). + +4.10) List of source files: + o Kconfig + o Makefile + o stmmac_main.c: main network device driver; + o stmmac_mdio.c: mdio functions; + o stmmac_ethtool.c: ethtool support; + o stmmac_timer.[ch]: timer code used for mitigating the driver dma interrupts + Only tested on ST40 platforms based. + o stmmac.h: private driver structure; + o common.h: common definitions and VFTs; + o descs.h: descriptor structure definitions; + o dwmac1000_core.c: GMAC core functions; + o dwmac1000_dma.c: dma functions for the GMAC chip; + o dwmac1000.h: specific header file for the GMAC; + o dwmac100_core: MAC 100 core and dma code; + o dwmac100_dma.c: dma funtions for the MAC chip; + o dwmac1000.h: specific header file for the MAC; + o dwmac_lib.c: generic DMA functions shared among chips + o enh_desc.c: functions for handling enhanced descriptors + o norm_desc.c: functions for handling normal descriptors + +5) Debug Information + +The driver exports many information i.e. internal statistics, +debug information, MAC and DMA registers etc. + +These can be read in several ways depending on the +type of the information actually needed. + +For example a user can be use the ethtool support +to get statistics: e.g. using: ethtool -S ethX +(that shows the Management counters (MMC) if supported) +or sees the MAC/DMA registers: e.g. using: ethtool -d ethX + +Compiling the Kernel with CONFIG_DEBUG_FS and enabling the +STMMAC_DEBUG_FS option the driver will export the following +debugfs entries: + +/sys/kernel/debug/stmmaceth/descriptors_status + To show the DMA TX/RX descriptor rings + +Developer can also use the "debug" module parameter to get +further debug information. + +In the end, there are other macros (that cannot be enabled +via menuconfig) to turn-on the RX/TX DMA debugging, +specific MAC core debug printk etc. Others to enable the +debug in the TX and RX processes. +All these are only useful during the developing stage +and should never enabled inside the code for general usage. +In fact, these can generate an huge amount of debug messages. + +6) TODO: + o XGMAC is not supported. + o Review the timer optimisation code to use an embedded device that will be available in new chip generations. diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt index 6fe9001..13032c0 100644 --- a/Documentation/oops-tracing.txt +++ b/Documentation/oops-tracing.txt @@ -263,6 +263,8 @@ characters, each representing a particular tainted value. 12: 'I' if the kernel is working around a severe bug in the platform firmware (BIOS or similar). + 13: 'O' if an externally-built ("out-of-tree") module has been loaded. + The primary reason for the 'Tainted: ' string is to tell kernel debuggers if this is a clean kernel or if anything unusual has occurred. Tainting is permanent: even if an offending module is diff --git a/Documentation/pinctrl.txt b/Documentation/pinctrl.txt new file mode 100644 index 0000000..074da62 --- /dev/null +++ b/Documentation/pinctrl.txt @@ -0,0 +1,950 @@ +PINCTRL (PIN CONTROL) subsystem +This document outlines the pin control subsystem in Linux + +This subsystem deals with: + +- Enumerating and naming controllable pins + +- Multiplexing of pins, pads, fingers (etc) see below for details + +The intention is to also deal with: + +- Software-controlled biasing and driving mode specific pins, such as + pull-up/down, open drain etc, load capacitance configuration when controlled + by software, etc. + + +Top-level interface +=================== + +Definition of PIN CONTROLLER: + +- A pin controller is a piece of hardware, usually a set of registers, that + can control PINs. It may be able to multiplex, bias, set load capacitance, + set drive strength etc for individual pins or groups of pins. + +Definition of PIN: + +- PINS are equal to pads, fingers, balls or whatever packaging input or + output line you want to control and these are denoted by unsigned integers + in the range 0..maxpin. This numberspace is local to each PIN CONTROLLER, so + there may be several such number spaces in a system. This pin space may + be sparse - i.e. there may be gaps in the space with numbers where no + pin exists. + +When a PIN CONTROLLER is instatiated, it will register a descriptor to the +pin control framework, and this descriptor contains an array of pin descriptors +describing the pins handled by this specific pin controller. + +Here is an example of a PGA (Pin Grid Array) chip seen from underneath: + + A B C D E F G H + + 8 o o o o o o o o + + 7 o o o o o o o o + + 6 o o o o o o o o + + 5 o o o o o o o o + + 4 o o o o o o o o + + 3 o o o o o o o o + + 2 o o o o o o o o + + 1 o o o o o o o o + +To register a pin controller and name all the pins on this package we can do +this in our driver: + +#include <linux/pinctrl/pinctrl.h> + +const struct pinctrl_pin_desc __refdata foo_pins[] = { + PINCTRL_PIN(0, "A1"), + PINCTRL_PIN(1, "A2"), + PINCTRL_PIN(2, "A3"), + ... + PINCTRL_PIN(61, "H6"), + PINCTRL_PIN(62, "H7"), + PINCTRL_PIN(63, "H8"), +}; + +static struct pinctrl_desc foo_desc = { + .name = "foo", + .pins = foo_pins, + .npins = ARRAY_SIZE(foo_pins), + .maxpin = 63, + .owner = THIS_MODULE, +}; + +int __init foo_probe(void) +{ + struct pinctrl_dev *pctl; + + pctl = pinctrl_register(&foo_desc, <PARENT>, NULL); + if (IS_ERR(pctl)) + pr_err("could not register foo pin driver\n"); +} + +Pins usually have fancier names than this. You can find these in the dataheet +for your chip. Notice that the core pinctrl.h file provides a fancy macro +called PINCTRL_PIN() to create the struct entries. As you can see I enumerated +the pins from 0 in the upper left corner to 63 in the lower right corner, +this enumeration was arbitrarily chosen, in practice you need to think +through your numbering system so that it matches the layout of registers +and such things in your driver, or the code may become complicated. You must +also consider matching of offsets to the GPIO ranges that may be handled by +the pin controller. + +For a padring with 467 pads, as opposed to actual pins, I used an enumeration +like this, walking around the edge of the chip, which seems to be industry +standard too (all these pads had names, too): + + + 0 ..... 104 + 466 105 + . . + . . + 358 224 + 357 .... 225 + + +Pin groups +========== + +Many controllers need to deal with groups of pins, so the pin controller +subsystem has a mechanism for enumerating groups of pins and retrieving the +actual enumerated pins that are part of a certain group. + +For example, say that we have a group of pins dealing with an SPI interface +on { 0, 8, 16, 24 }, and a group of pins dealing with an I2C interface on pins +on { 24, 25 }. + +These two groups are presented to the pin control subsystem by implementing +some generic pinctrl_ops like this: + +#include <linux/pinctrl/pinctrl.h> + +struct foo_group { + const char *name; + const unsigned int *pins; + const unsigned num_pins; +}; + +static unsigned int spi0_pins[] = { 0, 8, 16, 24 }; +static unsigned int i2c0_pins[] = { 24, 25 }; + +static const struct foo_group foo_groups[] = { + { + .name = "spi0_grp", + .pins = spi0_pins, + .num_pins = ARRAY_SIZE(spi0_pins), + }, + { + .name = "i2c0_grp", + .pins = i2c0_pins, + .num_pins = ARRAY_SIZE(i2c0_pins), + }, +}; + + +static int foo_list_groups(struct pinctrl_dev *pctldev, unsigned selector) +{ + if (selector >= ARRAY_SIZE(foo_groups)) + return -EINVAL; + return 0; +} + +static const char *foo_get_group_name(struct pinctrl_dev *pctldev, + unsigned selector) +{ + return foo_groups[selector].name; +} + +static int foo_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector, + const unsigned **pins, + unsigned *num_pins) +{ + *pins = (unsigned *) foo_groups[selector].pins; + *num_pins = foo_groups[selector].num_pins; + return 0; +} + +static struct pinctrl_ops foo_pctrl_ops = { + .list_groups = foo_list_groups, + .get_group_name = foo_get_group_name, + .get_group_pins = foo_get_group_pins, +}; + + +static struct pinctrl_desc foo_desc = { + ... + .pctlops = &foo_pctrl_ops, +}; + +The pin control subsystem will call the .list_groups() function repeatedly +beginning on 0 until it returns non-zero to determine legal selectors, then +it will call the other functions to retrieve the name and pins of the group. +Maintaining the data structure of the groups is up to the driver, this is +just a simple example - in practice you may need more entries in your group +structure, for example specific register ranges associated with each group +and so on. + + +Interaction with the GPIO subsystem +=================================== + +The GPIO drivers may want to perform operations of various types on the same +physical pins that are also registered as pin controller pins. + +Since the pin controller subsystem have its pinspace local to the pin +controller we need a mapping so that the pin control subsystem can figure out +which pin controller handles control of a certain GPIO pin. Since a single +pin controller may be muxing several GPIO ranges (typically SoCs that have +one set of pins but internally several GPIO silicon blocks, each modeled as +a struct gpio_chip) any number of GPIO ranges can be added to a pin controller +instance like this: + +struct gpio_chip chip_a; +struct gpio_chip chip_b; + +static struct pinctrl_gpio_range gpio_range_a = { + .name = "chip a", + .id = 0, + .base = 32, + .npins = 16, + .gc = &chip_a; +}; + +static struct pinctrl_gpio_range gpio_range_a = { + .name = "chip b", + .id = 0, + .base = 48, + .npins = 8, + .gc = &chip_b; +}; + + +{ + struct pinctrl_dev *pctl; + ... + pinctrl_add_gpio_range(pctl, &gpio_range_a); + pinctrl_add_gpio_range(pctl, &gpio_range_b); +} + +So this complex system has one pin controller handling two different +GPIO chips. Chip a has 16 pins and chip b has 8 pins. They are mapped in +the global GPIO pin space at: + +chip a: [32 .. 47] +chip b: [48 .. 55] + +When GPIO-specific functions in the pin control subsystem are called, these +ranges will be used to look up the apropriate pin controller by inspecting +and matching the pin to the pin ranges across all controllers. When a +pin controller handling the matching range is found, GPIO-specific functions +will be called on that specific pin controller. + +For all functionalities dealing with pin biasing, pin muxing etc, the pin +controller subsystem will subtract the range's .base offset from the passed +in gpio pin number, and pass that on to the pin control driver, so the driver +will get an offset into its handled number range. Further it is also passed +the range ID value, so that the pin controller knows which range it should +deal with. + +For example: if a user issues pinctrl_gpio_set_foo(50), the pin control +subsystem will find that the second range on this pin controller matches, +subtract the base 48 and call the +pinctrl_driver_gpio_set_foo(pinctrl, range, 2) where the latter function has +this signature: + +int pinctrl_driver_gpio_set_foo(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *rangeid, + unsigned offset); + +Now the driver knows that we want to do some GPIO-specific operation on the +second GPIO range handled by "chip b", at offset 2 in that specific range. + +(If the GPIO subsystem is ever refactored to use a local per-GPIO controller +pin space, this mapping will need to be augmented accordingly.) + + +PINMUX interfaces +================= + +These calls use the pinmux_* naming prefix. No other calls should use that +prefix. + + +What is pinmuxing? +================== + +PINMUX, also known as padmux, ballmux, alternate functions or mission modes +is a way for chip vendors producing some kind of electrical packages to use +a certain physical pin (ball, pad, finger, etc) for multiple mutually exclusive +functions, depending on the application. By "application" in this context +we usually mean a way of soldering or wiring the package into an electronic +system, even though the framework makes it possible to also change the function +at runtime. + +Here is an example of a PGA (Pin Grid Array) chip seen from underneath: + + A B C D E F G H + +---+ + 8 | o | o o o o o o o + | | + 7 | o | o o o o o o o + | | + 6 | o | o o o o o o o + +---+---+ + 5 | o | o | o o o o o o + +---+---+ +---+ + 4 o o o o o o | o | o + | | + 3 o o o o o o | o | o + | | + 2 o o o o o o | o | o + +-------+-------+-------+---+---+ + 1 | o o | o o | o o | o | o | + +-------+-------+-------+---+---+ + +This is not tetris. The game to think of is chess. Not all PGA/BGA packages +are chessboard-like, big ones have "holes" in some arrangement according to +different design patterns, but we're using this as a simple example. Of the +pins you see some will be taken by things like a few VCC and GND to feed power +to the chip, and quite a few will be taken by large ports like an external +memory interface. The remaining pins will often be subject to pin multiplexing. + +The example 8x8 PGA package above will have pin numbers 0 thru 63 assigned to +its physical pins. It will name the pins { A1, A2, A3 ... H6, H7, H8 } using +pinctrl_register_pins() and a suitable data set as shown earlier. + +In this 8x8 BGA package the pins { A8, A7, A6, A5 } can be used as an SPI port +(these are four pins: CLK, RXD, TXD, FRM). In that case, pin B5 can be used as +some general-purpose GPIO pin. However, in another setting, pins { A5, B5 } can +be used as an I2C port (these are just two pins: SCL, SDA). Needless to say, +we cannot use the SPI port and I2C port at the same time. However in the inside +of the package the silicon performing the SPI logic can alternatively be routed +out on pins { G4, G3, G2, G1 }. + +On the botton row at { A1, B1, C1, D1, E1, F1, G1, H1 } we have something +special - it's an external MMC bus that can be 2, 4 or 8 bits wide, and it will +consume 2, 4 or 8 pins respectively, so either { A1, B1 } are taken or +{ A1, B1, C1, D1 } or all of them. If we use all 8 bits, we cannot use the SPI +port on pins { G4, G3, G2, G1 } of course. + +This way the silicon blocks present inside the chip can be multiplexed "muxed" +out on different pin ranges. Often contemporary SoC (systems on chip) will +contain several I2C, SPI, SDIO/MMC, etc silicon blocks that can be routed to +different pins by pinmux settings. + +Since general-purpose I/O pins (GPIO) are typically always in shortage, it is +common to be able to use almost any pin as a GPIO pin if it is not currently +in use by some other I/O port. + + +Pinmux conventions +================== + +The purpose of the pinmux functionality in the pin controller subsystem is to +abstract and provide pinmux settings to the devices you choose to instantiate +in your machine configuration. It is inspired by the clk, GPIO and regulator +subsystems, so devices will request their mux setting, but it's also possible +to request a single pin for e.g. GPIO. + +Definitions: + +- FUNCTIONS can be switched in and out by a driver residing with the pin + control subsystem in the drivers/pinctrl/* directory of the kernel. The + pin control driver knows the possible functions. In the example above you can + identify three pinmux functions, one for spi, one for i2c and one for mmc. + +- FUNCTIONS are assumed to be enumerable from zero in a one-dimensional array. + In this case the array could be something like: { spi0, i2c0, mmc0 } + for the three available functions. + +- FUNCTIONS have PIN GROUPS as defined on the generic level - so a certain + function is *always* associated with a certain set of pin groups, could + be just a single one, but could also be many. In the example above the + function i2c is associated with the pins { A5, B5 }, enumerated as + { 24, 25 } in the controller pin space. + + The Function spi is associated with pin groups { A8, A7, A6, A5 } + and { G4, G3, G2, G1 }, which are enumerated as { 0, 8, 16, 24 } and + { 38, 46, 54, 62 } respectively. + + Group names must be unique per pin controller, no two groups on the same + controller may have the same name. + +- The combination of a FUNCTION and a PIN GROUP determine a certain function + for a certain set of pins. The knowledge of the functions and pin groups + and their machine-specific particulars are kept inside the pinmux driver, + from the outside only the enumerators are known, and the driver core can: + + - Request the name of a function with a certain selector (>= 0) + - A list of groups associated with a certain function + - Request that a certain group in that list to be activated for a certain + function + + As already described above, pin groups are in turn self-descriptive, so + the core will retrieve the actual pin range in a certain group from the + driver. + +- FUNCTIONS and GROUPS on a certain PIN CONTROLLER are MAPPED to a certain + device by the board file, device tree or similar machine setup configuration + mechanism, similar to how regulators are connected to devices, usually by + name. Defining a pin controller, function and group thus uniquely identify + the set of pins to be used by a certain device. (If only one possible group + of pins is available for the function, no group name need to be supplied - + the core will simply select the first and only group available.) + + In the example case we can define that this particular machine shall + use device spi0 with pinmux function fspi0 group gspi0 and i2c0 on function + fi2c0 group gi2c0, on the primary pin controller, we get mappings + like these: + + { + {"map-spi0", spi0, pinctrl0, fspi0, gspi0}, + {"map-i2c0", i2c0, pinctrl0, fi2c0, gi2c0} + } + + Every map must be assigned a symbolic name, pin controller and function. + The group is not compulsory - if it is omitted the first group presented by + the driver as applicable for the function will be selected, which is + useful for simple cases. + + The device name is present in map entries tied to specific devices. Maps + without device names are referred to as SYSTEM pinmuxes, such as can be taken + by the machine implementation on boot and not tied to any specific device. + + It is possible to map several groups to the same combination of device, + pin controller and function. This is for cases where a certain function on + a certain pin controller may use different sets of pins in different + configurations. + +- PINS for a certain FUNCTION using a certain PIN GROUP on a certain + PIN CONTROLLER are provided on a first-come first-serve basis, so if some + other device mux setting or GPIO pin request has already taken your physical + pin, you will be denied the use of it. To get (activate) a new setting, the + old one has to be put (deactivated) first. + +Sometimes the documentation and hardware registers will be oriented around +pads (or "fingers") rather than pins - these are the soldering surfaces on the +silicon inside the package, and may or may not match the actual number of +pins/balls underneath the capsule. Pick some enumeration that makes sense to +you. Define enumerators only for the pins you can control if that makes sense. + +Assumptions: + +We assume that the number possible function maps to pin groups is limited by +the hardware. I.e. we assume that there is no system where any function can be +mapped to any pin, like in a phone exchange. So the available pins groups for +a certain function will be limited to a few choices (say up to eight or so), +not hundreds or any amount of choices. This is the characteristic we have found +by inspecting available pinmux hardware, and a necessary assumption since we +expect pinmux drivers to present *all* possible function vs pin group mappings +to the subsystem. + + +Pinmux drivers +============== + +The pinmux core takes care of preventing conflicts on pins and calling +the pin controller driver to execute different settings. + +It is the responsibility of the pinmux driver to impose further restrictions +(say for example infer electronic limitations due to load etc) to determine +whether or not the requested function can actually be allowed, and in case it +is possible to perform the requested mux setting, poke the hardware so that +this happens. + +Pinmux drivers are required to supply a few callback functions, some are +optional. Usually the enable() and disable() functions are implemented, +writing values into some certain registers to activate a certain mux setting +for a certain pin. + +A simple driver for the above example will work by setting bits 0, 1, 2, 3 or 4 +into some register named MUX to select a certain function with a certain +group of pins would work something like this: + +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinmux.h> + +struct foo_group { + const char *name; + const unsigned int *pins; + const unsigned num_pins; +}; + +static const unsigned spi0_0_pins[] = { 0, 8, 16, 24 }; +static const unsigned spi0_1_pins[] = { 38, 46, 54, 62 }; +static const unsigned i2c0_pins[] = { 24, 25 }; +static const unsigned mmc0_1_pins[] = { 56, 57 }; +static const unsigned mmc0_2_pins[] = { 58, 59 }; +static const unsigned mmc0_3_pins[] = { 60, 61, 62, 63 }; + +static const struct foo_group foo_groups[] = { + { + .name = "spi0_0_grp", + .pins = spi0_0_pins, + .num_pins = ARRAY_SIZE(spi0_0_pins), + }, + { + .name = "spi0_1_grp", + .pins = spi0_1_pins, + .num_pins = ARRAY_SIZE(spi0_1_pins), + }, + { + .name = "i2c0_grp", + .pins = i2c0_pins, + .num_pins = ARRAY_SIZE(i2c0_pins), + }, + { + .name = "mmc0_1_grp", + .pins = mmc0_1_pins, + .num_pins = ARRAY_SIZE(mmc0_1_pins), + }, + { + .name = "mmc0_2_grp", + .pins = mmc0_2_pins, + .num_pins = ARRAY_SIZE(mmc0_2_pins), + }, + { + .name = "mmc0_3_grp", + .pins = mmc0_3_pins, + .num_pins = ARRAY_SIZE(mmc0_3_pins), + }, +}; + + +static int foo_list_groups(struct pinctrl_dev *pctldev, unsigned selector) +{ + if (selector >= ARRAY_SIZE(foo_groups)) + return -EINVAL; + return 0; +} + +static const char *foo_get_group_name(struct pinctrl_dev *pctldev, + unsigned selector) +{ + return foo_groups[selector].name; +} + +static int foo_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector, + unsigned ** const pins, + unsigned * const num_pins) +{ + *pins = (unsigned *) foo_groups[selector].pins; + *num_pins = foo_groups[selector].num_pins; + return 0; +} + +static struct pinctrl_ops foo_pctrl_ops = { + .list_groups = foo_list_groups, + .get_group_name = foo_get_group_name, + .get_group_pins = foo_get_group_pins, +}; + +struct foo_pmx_func { + const char *name; + const char * const *groups; + const unsigned num_groups; +}; + +static const char * const spi0_groups[] = { "spi0_1_grp" }; +static const char * const i2c0_groups[] = { "i2c0_grp" }; +static const char * const mmc0_groups[] = { "mmc0_1_grp", "mmc0_2_grp", + "mmc0_3_grp" }; + +static const struct foo_pmx_func foo_functions[] = { + { + .name = "spi0", + .groups = spi0_groups, + .num_groups = ARRAY_SIZE(spi0_groups), + }, + { + .name = "i2c0", + .groups = i2c0_groups, + .num_groups = ARRAY_SIZE(i2c0_groups), + }, + { + .name = "mmc0", + .groups = mmc0_groups, + .num_groups = ARRAY_SIZE(mmc0_groups), + }, +}; + +int foo_list_funcs(struct pinctrl_dev *pctldev, unsigned selector) +{ + if (selector >= ARRAY_SIZE(foo_functions)) + return -EINVAL; + return 0; +} + +const char *foo_get_fname(struct pinctrl_dev *pctldev, unsigned selector) +{ + return myfuncs[selector].name; +} + +static int foo_get_groups(struct pinctrl_dev *pctldev, unsigned selector, + const char * const **groups, + unsigned * const num_groups) +{ + *groups = foo_functions[selector].groups; + *num_groups = foo_functions[selector].num_groups; + return 0; +} + +int foo_enable(struct pinctrl_dev *pctldev, unsigned selector, + unsigned group) +{ + u8 regbit = (1 << group); + + writeb((readb(MUX)|regbit), MUX) + return 0; +} + +int foo_disable(struct pinctrl_dev *pctldev, unsigned selector, + unsigned group) +{ + u8 regbit = (1 << group); + + writeb((readb(MUX) & ~(regbit)), MUX) + return 0; +} + +struct pinmux_ops foo_pmxops = { + .list_functions = foo_list_funcs, + .get_function_name = foo_get_fname, + .get_function_groups = foo_get_groups, + .enable = foo_enable, + .disable = foo_disable, +}; + +/* Pinmux operations are handled by some pin controller */ +static struct pinctrl_desc foo_desc = { + ... + .pctlops = &foo_pctrl_ops, + .pmxops = &foo_pmxops, +}; + +In the example activating muxing 0 and 1 at the same time setting bits +0 and 1, uses one pin in common so they would collide. + +The beauty of the pinmux subsystem is that since it keeps track of all +pins and who is using them, it will already have denied an impossible +request like that, so the driver does not need to worry about such +things - when it gets a selector passed in, the pinmux subsystem makes +sure no other device or GPIO assignment is already using the selected +pins. Thus bits 0 and 1 in the control register will never be set at the +same time. + +All the above functions are mandatory to implement for a pinmux driver. + + +Pinmux interaction with the GPIO subsystem +========================================== + +The function list could become long, especially if you can convert every +individual pin into a GPIO pin independent of any other pins, and then try +the approach to define every pin as a function. + +In this case, the function array would become 64 entries for each GPIO +setting and then the device functions. + +For this reason there is an additional function a pinmux driver can implement +to enable only GPIO on an individual pin: .gpio_request_enable(). The same +.free() function as for other functions is assumed to be usable also for +GPIO pins. + +This function will pass in the affected GPIO range identified by the pin +controller core, so you know which GPIO pins are being affected by the request +operation. + +Alternatively it is fully allowed to use named functions for each GPIO +pin, the pinmux_request_gpio() will attempt to obtain the function "gpioN" +where "N" is the global GPIO pin number if no special GPIO-handler is +registered. + + +Pinmux board/machine configuration +================================== + +Boards and machines define how a certain complete running system is put +together, including how GPIOs and devices are muxed, how regulators are +constrained and how the clock tree looks. Of course pinmux settings are also +part of this. + +A pinmux config for a machine looks pretty much like a simple regulator +configuration, so for the example array above we want to enable i2c and +spi on the second function mapping: + +#include <linux/pinctrl/machine.h> + +static struct pinmux_map pmx_mapping[] = { + { + .ctrl_dev_name = "pinctrl.0", + .function = "spi0", + .dev_name = "foo-spi.0", + }, + { + .ctrl_dev_name = "pinctrl.0", + .function = "i2c0", + .dev_name = "foo-i2c.0", + }, + { + .ctrl_dev_name = "pinctrl.0", + .function = "mmc0", + .dev_name = "foo-mmc.0", + }, +}; + +The dev_name here matches to the unique device name that can be used to look +up the device struct (just like with clockdev or regulators). The function name +must match a function provided by the pinmux driver handling this pin range. + +As you can see we may have several pin controllers on the system and thus +we need to specify which one of them that contain the functions we wish +to map. The map can also use struct device * directly, so there is no +inherent need to use strings to specify .dev_name or .ctrl_dev_name, these +are for the situation where you do not have a handle to the struct device *, +for example if they are not yet instantiated or cumbersome to obtain. + +You register this pinmux mapping to the pinmux subsystem by simply: + + ret = pinmux_register_mappings(&pmx_mapping, ARRAY_SIZE(pmx_mapping)); + +Since the above construct is pretty common there is a helper macro to make +it even more compact which assumes you want to use pinctrl.0 and position +0 for mapping, for example: + +static struct pinmux_map pmx_mapping[] = { + PINMUX_MAP_PRIMARY("I2CMAP", "i2c0", "foo-i2c.0"), +}; + + +Complex mappings +================ + +As it is possible to map a function to different groups of pins an optional +.group can be specified like this: + +... +{ + .name = "spi0-pos-A", + .ctrl_dev_name = "pinctrl.0", + .function = "spi0", + .group = "spi0_0_grp", + .dev_name = "foo-spi.0", +}, +{ + .name = "spi0-pos-B", + .ctrl_dev_name = "pinctrl.0", + .function = "spi0", + .group = "spi0_1_grp", + .dev_name = "foo-spi.0", +}, +... + +This example mapping is used to switch between two positions for spi0 at +runtime, as described further below under the heading "Runtime pinmuxing". + +Further it is possible to match several groups of pins to the same function +for a single device, say for example in the mmc0 example above, where you can +additively expand the mmc0 bus from 2 to 4 to 8 pins. If we want to use all +three groups for a total of 2+2+4 = 8 pins (for an 8-bit MMC bus as is the +case), we define a mapping like this: + +... +{ + .name "2bit" + .ctrl_dev_name = "pinctrl.0", + .function = "mmc0", + .group = "mmc0_0_grp", + .dev_name = "foo-mmc.0", +}, +{ + .name "4bit" + .ctrl_dev_name = "pinctrl.0", + .function = "mmc0", + .group = "mmc0_0_grp", + .dev_name = "foo-mmc.0", +}, +{ + .name "4bit" + .ctrl_dev_name = "pinctrl.0", + .function = "mmc0", + .group = "mmc0_1_grp", + .dev_name = "foo-mmc.0", +}, +{ + .name "8bit" + .ctrl_dev_name = "pinctrl.0", + .function = "mmc0", + .group = "mmc0_0_grp", + .dev_name = "foo-mmc.0", +}, +{ + .name "8bit" + .ctrl_dev_name = "pinctrl.0", + .function = "mmc0", + .group = "mmc0_1_grp", + .dev_name = "foo-mmc.0", +}, +{ + .name "8bit" + .ctrl_dev_name = "pinctrl.0", + .function = "mmc0", + .group = "mmc0_2_grp", + .dev_name = "foo-mmc.0", +}, +... + +The result of grabbing this mapping from the device with something like +this (see next paragraph): + + pmx = pinmux_get(&device, "8bit"); + +Will be that you activate all the three bottom records in the mapping at +once. Since they share the same name, pin controller device, funcion and +device, and since we allow multiple groups to match to a single device, they +all get selected, and they all get enabled and disable simultaneously by the +pinmux core. + + +Pinmux requests from drivers +============================ + +Generally it is discouraged to let individual drivers get and enable pinmuxes. +So if possible, handle the pinmuxes in platform code or some other place where +you have access to all the affected struct device * pointers. In some cases +where a driver needs to switch between different mux mappings at runtime +this is not possible. + +A driver may request a certain mux to be activated, usually just the default +mux like this: + +#include <linux/pinctrl/pinmux.h> + +struct foo_state { + struct pinmux *pmx; + ... +}; + +foo_probe() +{ + /* Allocate a state holder named "state" etc */ + struct pinmux pmx; + + pmx = pinmux_get(&device, NULL); + if IS_ERR(pmx) + return PTR_ERR(pmx); + pinmux_enable(pmx); + + state->pmx = pmx; +} + +foo_remove() +{ + pinmux_disable(state->pmx); + pinmux_put(state->pmx); +} + +If you want to grab a specific mux mapping and not just the first one found for +this device you can specify a specific mapping name, for example in the above +example the second i2c0 setting: pinmux_get(&device, "spi0-pos-B"); + +This get/enable/disable/put sequence can just as well be handled by bus drivers +if you don't want each and every driver to handle it and you know the +arrangement on your bus. + +The semantics of the get/enable respective disable/put is as follows: + +- pinmux_get() is called in process context to reserve the pins affected with + a certain mapping and set up the pinmux core and the driver. It will allocate + a struct from the kernel memory to hold the pinmux state. + +- pinmux_enable()/pinmux_disable() is quick and can be called from fastpath + (irq context) when you quickly want to set up/tear down the hardware muxing + when running a device driver. Usually it will just poke some values into a + register. + +- pinmux_disable() is called in process context to tear down the pin requests + and release the state holder struct for the mux setting. + +Usually the pinmux core handled the get/put pair and call out to the device +drivers bookkeeping operations, like checking available functions and the +associated pins, whereas the enable/disable pass on to the pin controller +driver which takes care of activating and/or deactivating the mux setting by +quickly poking some registers. + +The pins are allocated for your device when you issue the pinmux_get() call, +after this you should be able to see this in the debugfs listing of all pins. + + +System pinmux hogging +===================== + +A system pinmux map entry, i.e. a pinmux setting that does not have a device +associated with it, can be hogged by the core when the pin controller is +registered. This means that the core will attempt to call pinmux_get() and +pinmux_enable() on it immediately after the pin control device has been +registered. + +This is enabled by simply setting the .hog_on_boot field in the map to true, +like this: + +{ + .name "POWERMAP" + .ctrl_dev_name = "pinctrl.0", + .function = "power_func", + .hog_on_boot = true, +}, + +Since it may be common to request the core to hog a few always-applicable +mux settings on the primary pin controller, there is a convenience macro for +this: + +PINMUX_MAP_PRIMARY_SYS_HOG("POWERMAP", "power_func") + +This gives the exact same result as the above construction. + + +Runtime pinmuxing +================= + +It is possible to mux a certain function in and out at runtime, say to move +an SPI port from one set of pins to another set of pins. Say for example for +spi0 in the example above, we expose two different groups of pins for the same +function, but with different named in the mapping as described under +"Advanced mapping" above. So we have two mappings named "spi0-pos-A" and +"spi0-pos-B". + +This snippet first muxes the function in the pins defined by group A, enables +it, disables and releases it, and muxes it in on the pins defined by group B: + +foo_switch() +{ + struct pinmux pmx; + + /* Enable on position A */ + pmx = pinmux_get(&device, "spi0-pos-A"); + if IS_ERR(pmx) + return PTR_ERR(pmx); + pinmux_enable(pmx); + + /* This releases the pins again */ + pinmux_disable(pmx); + pinmux_put(pmx); + + /* Enable on position B */ + pmx = pinmux_get(&device, "spi0-pos-B"); + if IS_ERR(pmx) + return PTR_ERR(pmx); + pinmux_enable(pmx); + ... +} + +The above has to be done from process context. diff --git a/Documentation/power/00-INDEX b/Documentation/power/00-INDEX index 45e9d4a..a4d682f 100644 --- a/Documentation/power/00-INDEX +++ b/Documentation/power/00-INDEX @@ -26,6 +26,8 @@ s2ram.txt - How to get suspend to ram working (and debug it when it isn't) states.txt - System power management states +suspend-and-cpuhotplug.txt + - Explains the interaction between Suspend-to-RAM (S3) and CPU hotplug swsusp-and-swap-files.txt - Using swap files with software suspend (to disk) swsusp-dmcrypt.txt diff --git a/Documentation/power/basic-pm-debugging.txt b/Documentation/power/basic-pm-debugging.txt index ddd7817..40a4c65 100644 --- a/Documentation/power/basic-pm-debugging.txt +++ b/Documentation/power/basic-pm-debugging.txt @@ -173,7 +173,7 @@ kernel messages using the serial console. This may provide you with some information about the reasons of the suspend (resume) failure. Alternatively, it may be possible to use a FireWire port for debugging with firescope (ftp://ftp.firstfloor.org/pub/ak/firescope/). On x86 it is also possible to -use the PM_TRACE mechanism documented in Documentation/s2ram.txt . +use the PM_TRACE mechanism documented in Documentation/power/s2ram.txt . 2. Testing suspend to RAM (STR) @@ -201,3 +201,27 @@ case, you may be able to search for failing drivers by following the procedure analogous to the one described in section 1. If you find some failing drivers, you will have to unload them every time before an STR transition (ie. before you run s2ram), and please report the problems with them. + +There is a debugfs entry which shows the suspend to RAM statistics. Here is an +example of its output. + # mount -t debugfs none /sys/kernel/debug + # cat /sys/kernel/debug/suspend_stats + success: 20 + fail: 5 + failed_freeze: 0 + failed_prepare: 0 + failed_suspend: 5 + failed_suspend_noirq: 0 + failed_resume: 0 + failed_resume_noirq: 0 + failures: + last_failed_dev: alarm + adc + last_failed_errno: -16 + -16 + last_failed_step: suspend + suspend +Field success means the success number of suspend to RAM, and field fail means +the failure number. Others are the failure number of different steps of suspend +to RAM. suspend_stats just lists the last 2 failed devices, error number and +failed step of suspend. diff --git a/Documentation/power/devices.txt b/Documentation/power/devices.txt index 64565aa..3139fb5 100644 --- a/Documentation/power/devices.txt +++ b/Documentation/power/devices.txt @@ -123,9 +123,10 @@ please refer directly to the source code for more information about it. Subsystem-Level Methods ----------------------- The core methods to suspend and resume devices reside in struct dev_pm_ops -pointed to by the pm member of struct bus_type, struct device_type and -struct class. They are mostly of interest to the people writing infrastructure -for buses, like PCI or USB, or device type and device class drivers. +pointed to by the ops member of struct dev_pm_domain, or by the pm member of +struct bus_type, struct device_type and struct class. They are mostly of +interest to the people writing infrastructure for platforms and buses, like PCI +or USB, or device type and device class drivers. Bus drivers implement these methods as appropriate for the hardware and the drivers using it; PCI works differently from USB, and so on. Not many people @@ -139,39 +140,57 @@ sequencing in the driver model tree. /sys/devices/.../power/wakeup files ----------------------------------- -All devices in the driver model have two flags to control handling of wakeup -events (hardware signals that can force the device and/or system out of a low -power state). These flags are initialized by bus or device driver code using +All device objects in the driver model contain fields that control the handling +of system wakeup events (hardware signals that can force the system out of a +sleep state). These fields are initialized by bus or device driver code using device_set_wakeup_capable() and device_set_wakeup_enable(), defined in include/linux/pm_wakeup.h. -The "can_wakeup" flag just records whether the device (and its driver) can +The "power.can_wakeup" flag just records whether the device (and its driver) can physically support wakeup events. The device_set_wakeup_capable() routine -affects this flag. The "should_wakeup" flag controls whether the device should -try to use its wakeup mechanism. device_set_wakeup_enable() affects this flag; -for the most part drivers should not change its value. The initial value of -should_wakeup is supposed to be false for the majority of devices; the major -exceptions are power buttons, keyboards, and Ethernet adapters whose WoL -(wake-on-LAN) feature has been set up with ethtool. +affects this flag. The "power.wakeup" field is a pointer to an object of type +struct wakeup_source used for controlling whether or not the device should use +its system wakeup mechanism and for notifying the PM core of system wakeup +events signaled by the device. This object is only present for wakeup-capable +devices (i.e. devices whose "can_wakeup" flags are set) and is created (or +removed) by device_set_wakeup_capable(). Whether or not a device is capable of issuing wakeup events is a hardware matter, and the kernel is responsible for keeping track of it. By contrast, whether or not a wakeup-capable device should issue wakeup events is a policy decision, and it is managed by user space through a sysfs attribute: the -power/wakeup file. User space can write the strings "enabled" or "disabled" to -set or clear the "should_wakeup" flag, respectively. This file is only present -for wakeup-capable devices (i.e. devices whose "can_wakeup" flags are set) -and is created (or removed) by device_set_wakeup_capable(). Reads from the -file will return the corresponding string. - -The device_may_wakeup() routine returns true only if both flags are set. +"power/wakeup" file. User space can write the strings "enabled" or "disabled" +to it to indicate whether or not, respectively, the device is supposed to signal +system wakeup. This file is only present if the "power.wakeup" object exists +for the given device and is created (or removed) along with that object, by +device_set_wakeup_capable(). Reads from the file will return the corresponding +string. + +The "power/wakeup" file is supposed to contain the "disabled" string initially +for the majority of devices; the major exceptions are power buttons, keyboards, +and Ethernet adapters whose WoL (wake-on-LAN) feature has been set up with +ethtool. It should also default to "enabled" for devices that don't generate +wakeup requests on their own but merely forward wakeup requests from one bus to +another (like PCI Express ports). + +The device_may_wakeup() routine returns true only if the "power.wakeup" object +exists and the corresponding "power/wakeup" file contains the string "enabled". This information is used by subsystems, like the PCI bus type code, to see whether or not to enable the devices' wakeup mechanisms. If device wakeup mechanisms are enabled or disabled directly by drivers, they also should use device_may_wakeup() to decide what to do during a system sleep transition. -However for runtime power management, wakeup events should be enabled whenever -the device and driver both support them, regardless of the should_wakeup flag. - +Device drivers, however, are not supposed to call device_set_wakeup_enable() +directly in any case. + +It ought to be noted that system wakeup is conceptually different from "remote +wakeup" used by runtime power management, although it may be supported by the +same physical mechanism. Remote wakeup is a feature allowing devices in +low-power states to trigger specific interrupts to signal conditions in which +they should be put into the full-power state. Those interrupts may or may not +be used to signal system wakeup events, depending on the hardware design. On +some systems it is impossible to trigger them from system sleep states. In any +case, remote wakeup should always be enabled for runtime power management for +all devices and drivers that support it. /sys/devices/.../power/control files ------------------------------------ @@ -247,20 +266,31 @@ for every device before the next phase begins. Not all busses or classes support all these callbacks and not all drivers use all the callbacks. The various phases always run after tasks have been frozen and before they are unfrozen. Furthermore, the *_noirq phases run at a time when IRQ handlers have -been disabled (except for those marked with the IRQ_WAKEUP flag). - -All phases use bus, type, or class callbacks (that is, methods defined in -dev->bus->pm, dev->type->pm, or dev->class->pm). These callbacks are mutually -exclusive, so if the device type provides a struct dev_pm_ops object pointed to -by its pm field (i.e. both dev->type and dev->type->pm are defined), the -callbacks included in that object (i.e. dev->type->pm) will be used. Otherwise, -if the class provides a struct dev_pm_ops object pointed to by its pm field -(i.e. both dev->class and dev->class->pm are defined), the PM core will use the -callbacks from that object (i.e. dev->class->pm). Finally, if the pm fields of -both the device type and class objects are NULL (or those objects do not exist), -the callbacks provided by the bus (that is, the callbacks from dev->bus->pm) -will be used (this allows device types to override callbacks provided by bus -types or classes if necessary). +been disabled (except for those marked with the IRQF_NO_SUSPEND flag). + +All phases use PM domain, bus, type, or class callbacks (that is, methods +defined in dev->pm_domain->ops, dev->bus->pm, dev->type->pm, or dev->class->pm). +These callbacks are regarded by the PM core as mutually exclusive. Moreover, +PM domain callbacks always take precedence over bus, type and class callbacks, +while type callbacks take precedence over bus and class callbacks, and class +callbacks take precedence over bus callbacks. To be precise, the following +rules are used to determine which callback to execute in the given phase: + + 1. If dev->pm_domain is present, the PM core will attempt to execute the + callback included in dev->pm_domain->ops. If that callback is not + present, no action will be carried out for the given device. + + 2. Otherwise, if both dev->type and dev->type->pm are present, the callback + included in dev->type->pm will be executed. + + 3. Otherwise, if both dev->class and dev->class->pm are present, the + callback included in dev->class->pm will be executed. + + 4. Otherwise, if both dev->bus and dev->bus->pm are present, the callback + included in dev->bus->pm will be executed. + +This allows PM domains and device types to override callbacks provided by bus +types or device classes if necessary. These callbacks may in turn invoke device- or driver-specific methods stored in dev->driver->pm, but they don't have to. @@ -279,15 +309,10 @@ When the system goes into the standby or memory sleep state, the phases are: time.) Unlike the other suspend-related phases, during the prepare phase the device tree is traversed top-down. - In addition to that, if device drivers need to allocate additional - memory to be able to hadle device suspend correctly, that should be - done in the prepare phase. - After the prepare callback method returns, no new children may be registered below the device. The method may also prepare the device or - driver in some way for the upcoming system power transition (for - example, by allocating additional memory required for this purpose), but - it should not put the device into a low-power state. + driver in some way for the upcoming system power transition, but it + should not put the device into a low-power state. 2. The suspend methods should quiesce the device to stop it from performing I/O. They also may save the device registers and put it into the @@ -506,8 +531,8 @@ routines. Nevertheless, different callback pointers are used in case there is a situation where it actually matters. -Device Power Domains --------------------- +Device Power Management Domains +------------------------------- Sometimes devices share reference clocks or other power resources. In those cases it generally is not possible to put devices into low-power states individually. Instead, a set of devices sharing a power resource can be put @@ -516,8 +541,8 @@ power resource. Of course, they also need to be put into the full-power state together, by turning the shared power resource on. A set of devices with this property is often referred to as a power domain. -Support for power domains is provided through the pwr_domain field of struct -device. This field is a pointer to an object of type struct dev_power_domain, +Support for power domains is provided through the pm_domain field of struct +device. This field is a pointer to an object of type struct dev_pm_domain, defined in include/linux/pm.h, providing a set of power management callbacks analogous to the subsystem-level and device driver callbacks that are executed for the given device during all power transitions, instead of the respective @@ -604,7 +629,7 @@ state temporarily, for example so that its system wakeup capability can be disabled. This all depends on the hardware and the design of the subsystem and device driver in question. -During system-wide resume from a sleep state it's best to put devices into the -full-power state, as explained in Documentation/power/runtime_pm.txt. Refer to -that document for more information regarding this particular issue as well as +During system-wide resume from a sleep state it's easiest to put devices into +the full-power state, as explained in Documentation/power/runtime_pm.txt. Refer +to that document for more information regarding this particular issue as well as for information on the device runtime power management framework in general. diff --git a/Documentation/power/freezing-of-tasks.txt b/Documentation/power/freezing-of-tasks.txt index 38b5724..316c2ba 100644 --- a/Documentation/power/freezing-of-tasks.txt +++ b/Documentation/power/freezing-of-tasks.txt @@ -22,12 +22,12 @@ try_to_freeze_tasks() that sets TIF_FREEZE for all of the freezable tasks and either wakes them up, if they are kernel threads, or sends fake signals to them, if they are user space processes. A task that has TIF_FREEZE set, should react to it by calling the function called refrigerator() (defined in -kernel/power/process.c), which sets the task's PF_FROZEN flag, changes its state +kernel/freezer.c), which sets the task's PF_FROZEN flag, changes its state to TASK_UNINTERRUPTIBLE and makes it loop until PF_FROZEN is cleared for it. Then, we say that the task is 'frozen' and therefore the set of functions handling this mechanism is referred to as 'the freezer' (these functions are -defined in kernel/power/process.c and include/linux/freezer.h). User space -processes are generally frozen before kernel threads. +defined in kernel/power/process.c, kernel/freezer.c & include/linux/freezer.h). +User space processes are generally frozen before kernel threads. It is not recommended to call refrigerator() directly. Instead, it is recommended to use the try_to_freeze() function (defined in @@ -95,7 +95,7 @@ after the memory for the image has been freed, we don't want tasks to allocate additional memory and we prevent them from doing that by freezing them earlier. [Of course, this also means that device drivers should not allocate substantial amounts of memory from their .suspend() callbacks before hibernation, but this -is e separate issue.] +is a separate issue.] 3. The third reason is to prevent user space processes and some kernel threads from interfering with the suspending and resuming of devices. A user space diff --git a/Documentation/power/opp.txt b/Documentation/power/opp.txt index 5ae70a12..3035d00 100644 --- a/Documentation/power/opp.txt +++ b/Documentation/power/opp.txt @@ -321,6 +321,8 @@ opp_init_cpufreq_table - cpufreq framework typically is initialized with addition to CONFIG_PM as power management feature is required to dynamically scale voltage and frequency in a system. +opp_free_cpufreq_table - Free up the table allocated by opp_init_cpufreq_table + 7. Data Structures ================== Typically an SoC contains multiple voltage domains which are variable. Each diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt index bfed898..17e130a 100644 --- a/Documentation/power/pm_qos_interface.txt +++ b/Documentation/power/pm_qos_interface.txt @@ -4,14 +4,19 @@ This interface provides a kernel and user mode interface for registering performance expectations by drivers, subsystems and user space applications on one of the parameters. -Currently we have {cpu_dma_latency, network_latency, network_throughput} as the -initial set of pm_qos parameters. +Two different PM QoS frameworks are available: +1. PM QoS classes for cpu_dma_latency, network_latency, network_throughput. +2. the per-device PM QoS framework provides the API to manage the per-device latency +constraints. Each parameters have defined units: * latency: usec * timeout: usec * throughput: kbs (kilo bit / sec) + +1. PM QoS framework + The infrastructure exposes multiple misc device nodes one per implemented parameter. The set of parameters implement is defined by pm_qos_power_init() and pm_qos_params.h. This is done because having the available parameters @@ -23,14 +28,18 @@ an aggregated target value. The aggregated target value is updated with changes to the request list or elements of the list. Typically the aggregated target value is simply the max or min of the request values held in the parameter list elements. +Note: the aggregated target value is implemented as an atomic variable so that +reading the aggregated value does not require any locking mechanism. + From kernel mode the use of this interface is simple: -handle = pm_qos_add_request(param_class, target_value): -Will insert an element into the list for that identified PM_QOS class with the +void pm_qos_add_request(handle, param_class, target_value): +Will insert an element into the list for that identified PM QoS class with the target value. Upon change to this list the new target is recomputed and any registered notifiers are called only if the target value is now different. -Clients of pm_qos need to save the returned handle. +Clients of pm_qos need to save the returned handle for future use in other +pm_qos API functions. void pm_qos_update_request(handle, new_target_value): Will update the list element pointed to by the handle with the new target value @@ -42,6 +51,20 @@ Will remove the element. After removal it will update the aggregate target and call the notification tree if the target was changed as a result of removing the request. +int pm_qos_request(param_class): +Returns the aggregated value for a given PM QoS class. + +int pm_qos_request_active(handle): +Returns if the request is still active, i.e. it has not been removed from a +PM QoS class constraints list. + +int pm_qos_add_notifier(param_class, notifier): +Adds a notification callback function to the PM QoS class. The callback is +called when the aggregated value for the PM QoS class is changed. + +int pm_qos_remove_notifier(int param_class, notifier): +Removes the notification callback function for the PM QoS class. + From user mode: Only processes can register a pm_qos request. To provide for automatic @@ -63,4 +86,63 @@ To remove the user mode request for a target value simply close the device node. +2. PM QoS per-device latency framework + +For each device a list of performance requests is maintained along with +an aggregated target value. The aggregated target value is updated with +changes to the request list or elements of the list. Typically the +aggregated target value is simply the max or min of the request values held +in the parameter list elements. +Note: the aggregated target value is implemented as an atomic variable so that +reading the aggregated value does not require any locking mechanism. + + +From kernel mode the use of this interface is the following: + +int dev_pm_qos_add_request(device, handle, value): +Will insert an element into the list for that identified device with the +target value. Upon change to this list the new target is recomputed and any +registered notifiers are called only if the target value is now different. +Clients of dev_pm_qos need to save the handle for future use in other +dev_pm_qos API functions. + +int dev_pm_qos_update_request(handle, new_value): +Will update the list element pointed to by the handle with the new target value +and recompute the new aggregated target, calling the notification trees if the +target is changed. + +int dev_pm_qos_remove_request(handle): +Will remove the element. After removal it will update the aggregate target and +call the notification trees if the target was changed as a result of removing +the request. + +s32 dev_pm_qos_read_value(device): +Returns the aggregated value for a given device's constraints list. + + +Notification mechanisms: +The per-device PM QoS framework has 2 different and distinct notification trees: +a per-device notification tree and a global notification tree. + +int dev_pm_qos_add_notifier(device, notifier): +Adds a notification callback function for the device. +The callback is called when the aggregated value of the device constraints list +is changed. + +int dev_pm_qos_remove_notifier(device, notifier): +Removes the notification callback function for the device. + +int dev_pm_qos_add_global_notifier(notifier): +Adds a notification callback function in the global notification tree of the +framework. +The callback is called when the aggregated value for any device is changed. + +int dev_pm_qos_remove_global_notifier(notifier): +Removes the notification callback function from the global notification tree +of the framework. + + +From user mode: +No API for user space access to the per-device latency constraints is provided +yet - still under discussion. diff --git a/Documentation/power/regulator/machine.txt b/Documentation/power/regulator/machine.txt index b42419b..ce63af0 100644 --- a/Documentation/power/regulator/machine.txt +++ b/Documentation/power/regulator/machine.txt @@ -16,7 +16,7 @@ initialisation code by creating a struct regulator_consumer_supply for each regulator. struct regulator_consumer_supply { - struct device *dev; /* consumer */ + const char *dev_name; /* consumer dev_name() */ const char *supply; /* consumer supply - e.g. "vcc" */ }; @@ -24,13 +24,13 @@ e.g. for the machine above static struct regulator_consumer_supply regulator1_consumers[] = { { - .dev = &platform_consumerB_device.dev, - .supply = "Vcc", + .dev_name = "dev_name(consumer B)", + .supply = "Vcc", },}; static struct regulator_consumer_supply regulator2_consumers[] = { { - .dev = &platform_consumerA_device.dev, + .dev = "dev_name(consumer A"), .supply = "Vcc", },}; @@ -43,6 +43,7 @@ to their supply regulator :- static struct regulator_init_data regulator1_data = { .constraints = { + .name = "Regulator-1", .min_uV = 3300000, .max_uV = 3300000, .valid_modes_mask = REGULATOR_MODE_NORMAL, @@ -51,13 +52,19 @@ static struct regulator_init_data regulator1_data = { .consumer_supplies = regulator1_consumers, }; +The name field should be set to something that is usefully descriptive +for the board for configuration of supplies for other regulators and +for use in logging and other diagnostic output. Normally the name +used for the supply rail in the schematic is a good choice. If no +name is provided then the subsystem will choose one. + Regulator-1 supplies power to Regulator-2. This relationship must be registered with the core so that Regulator-1 is also enabled when Consumer A enables its supply (Regulator-2). The supply regulator is set by the supply_regulator -field below:- +field below and co:- static struct regulator_init_data regulator2_data = { - .supply_regulator = "regulator_name", + .supply_regulator = "Regulator-1", .constraints = { .min_uV = 1800000, .max_uV = 2000000, diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index a6b3430..c2ae8bf 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -1,39 +1,39 @@ -Run-time Power Management Framework for I/O Devices +Runtime Power Management Framework for I/O Devices (C) 2009-2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc. (C) 2010 Alan Stern <stern@rowland.harvard.edu> 1. Introduction -Support for run-time power management (run-time PM) of I/O devices is provided +Support for runtime power management (runtime PM) of I/O devices is provided at the power management core (PM core) level by means of: * The power management workqueue pm_wq in which bus types and device drivers can put their PM-related work items. It is strongly recommended that pm_wq be - used for queuing all work items related to run-time PM, because this allows + used for queuing all work items related to runtime PM, because this allows them to be synchronized with system-wide power transitions (suspend to RAM, hibernation and resume from system sleep states). pm_wq is declared in include/linux/pm_runtime.h and defined in kernel/power/main.c. -* A number of run-time PM fields in the 'power' member of 'struct device' (which +* A number of runtime PM fields in the 'power' member of 'struct device' (which is of the type 'struct dev_pm_info', defined in include/linux/pm.h) that can - be used for synchronizing run-time PM operations with one another. + be used for synchronizing runtime PM operations with one another. -* Three device run-time PM callbacks in 'struct dev_pm_ops' (defined in +* Three device runtime PM callbacks in 'struct dev_pm_ops' (defined in include/linux/pm.h). * A set of helper functions defined in drivers/base/power/runtime.c that can be - used for carrying out run-time PM operations in such a way that the + used for carrying out runtime PM operations in such a way that the synchronization between them is taken care of by the PM core. Bus types and device drivers are encouraged to use these functions. -The run-time PM callbacks present in 'struct dev_pm_ops', the device run-time PM +The runtime PM callbacks present in 'struct dev_pm_ops', the device runtime PM fields of 'struct dev_pm_info' and the core helper functions provided for -run-time PM are described below. +runtime PM are described below. -2. Device Run-time PM Callbacks +2. Device Runtime PM Callbacks -There are three device run-time PM callbacks defined in 'struct dev_pm_ops': +There are three device runtime PM callbacks defined in 'struct dev_pm_ops': struct dev_pm_ops { ... @@ -43,22 +43,34 @@ struct dev_pm_ops { ... }; -The ->runtime_suspend(), ->runtime_resume() and ->runtime_idle() callbacks are -executed by the PM core for either the device type, or the class (if the device -type's struct dev_pm_ops object does not exist), or the bus type (if the -device type's and class' struct dev_pm_ops objects do not exist) of the given -device (this allows device types to override callbacks provided by bus types or -classes if necessary). The bus type, device type and class callbacks are -referred to as subsystem-level callbacks in what follows. +The ->runtime_suspend(), ->runtime_resume() and ->runtime_idle() callbacks +are executed by the PM core for the device's subsystem that may be either of +the following: + + 1. PM domain of the device, if the device's PM domain object, dev->pm_domain, + is present. + + 2. Device type of the device, if both dev->type and dev->type->pm are present. + + 3. Device class of the device, if both dev->class and dev->class->pm are + present. + + 4. Bus type of the device, if both dev->bus and dev->bus->pm are present. + +The PM core always checks which callback to use in the order given above, so the +priority order of callbacks from high to low is: PM domain, device type, class +and bus type. Moreover, the high-priority one will always take precedence over +a low-priority one. The PM domain, bus type, device type and class callbacks +are referred to as subsystem-level callbacks in what follows. By default, the callbacks are always invoked in process context with interrupts enabled. However, subsystems can use the pm_runtime_irq_safe() helper function -to tell the PM core that a device's ->runtime_suspend() and ->runtime_resume() -callbacks should be invoked in atomic context with interrupts disabled -(->runtime_idle() is still invoked the default way). This implies that these -callback routines must not block or sleep, but it also means that the -synchronous helper functions listed at the end of Section 4 can be used within -an interrupt handler or in an atomic context. +to tell the PM core that their ->runtime_suspend(), ->runtime_resume() and +->runtime_idle() callbacks may be invoked in atomic context with interrupts +disabled for a given device. This implies that the callback routines in +question must not block or sleep, but it also means that the synchronous helper +functions listed at the end of Section 4 may be used for that device within an +interrupt handler or generally in an atomic context. The subsystem-level suspend callback is _entirely_ _responsible_ for handling the suspend of the device as appropriate, which may, but need not include @@ -72,11 +84,11 @@ knows what to do to handle the device). not mean that the device has been put into a low power state. It is supposed to mean, however, that the device will not process data and will not communicate with the CPU(s) and RAM until the subsystem-level resume - callback is executed for it. The run-time PM status of a device after + callback is executed for it. The runtime PM status of a device after successful execution of the subsystem-level suspend callback is 'suspended'. * If the subsystem-level suspend callback returns -EBUSY or -EAGAIN, - the device's run-time PM status is 'active', which means that the device + the device's runtime PM status is 'active', which means that the device _must_ be fully operational afterwards. * If the subsystem-level suspend callback returns an error code different @@ -104,7 +116,7 @@ the device). * Once the subsystem-level resume callback has completed successfully, the PM core regards the device as fully operational, which means that the device - _must_ be able to complete I/O operations as needed. The run-time PM status + _must_ be able to complete I/O operations as needed. The runtime PM status of the device is then 'active'. * If the subsystem-level resume callback returns an error code, the PM core @@ -130,7 +142,7 @@ device in that case. The value returned by this callback is ignored by the PM core. The helper functions provided by the PM core, described in Section 4, guarantee -that the following constraints are met with respect to the bus type's run-time +that the following constraints are met with respect to the bus type's runtime PM callbacks: (1) The callbacks are mutually exclusive (e.g. it is forbidden to execute @@ -142,7 +154,7 @@ PM callbacks: (2) ->runtime_idle() and ->runtime_suspend() can only be executed for 'active' devices (i.e. the PM core will only execute ->runtime_idle() or - ->runtime_suspend() for the devices the run-time PM status of which is + ->runtime_suspend() for the devices the runtime PM status of which is 'active'). (3) ->runtime_idle() and ->runtime_suspend() can only be executed for a device @@ -151,7 +163,7 @@ PM callbacks: flag of which is set. (4) ->runtime_resume() can only be executed for 'suspended' devices (i.e. the - PM core will only execute ->runtime_resume() for the devices the run-time + PM core will only execute ->runtime_resume() for the devices the runtime PM status of which is 'suspended'). Additionally, the helper functions provided by the PM core obey the following @@ -171,9 +183,9 @@ rules: scheduled requests to execute the other callbacks for the same device, except for scheduled autosuspends. -3. Run-time PM Device Fields +3. Runtime PM Device Fields -The following device run-time PM fields are present in 'struct dev_pm_info', as +The following device runtime PM fields are present in 'struct dev_pm_info', as defined in include/linux/pm.h: struct timer_list suspend_timer; @@ -205,7 +217,7 @@ defined in include/linux/pm.h: unsigned int disable_depth; - used for disabling the helper funcions (they work normally if this is - equal to zero); the initial value of it is 1 (i.e. run-time PM is + equal to zero); the initial value of it is 1 (i.e. runtime PM is initially disabled for all devices) unsigned int runtime_error; @@ -229,10 +241,10 @@ defined in include/linux/pm.h: suspend to complete; means "start a resume as soon as you've suspended" unsigned int run_wake; - - set if the device is capable of generating run-time wake-up events + - set if the device is capable of generating runtime wake-up events enum rpm_status runtime_status; - - the run-time PM status of the device; this field's initial value is + - the runtime PM status of the device; this field's initial value is RPM_SUSPENDED, which means that each device is initially regarded by the PM core as 'suspended', regardless of its real hardware status @@ -243,7 +255,7 @@ defined in include/linux/pm.h: and pm_runtime_forbid() helper functions unsigned int no_callbacks; - - indicates that the device does not use the run-time PM callbacks (see + - indicates that the device does not use the runtime PM callbacks (see Section 8); it may be modified only by the pm_runtime_no_callbacks() helper function @@ -270,16 +282,16 @@ defined in include/linux/pm.h: All of the above fields are members of the 'power' member of 'struct device'. -4. Run-time PM Device Helper Functions +4. Runtime PM Device Helper Functions -The following run-time PM helper functions are defined in +The following runtime PM helper functions are defined in drivers/base/power/runtime.c and include/linux/pm_runtime.h: void pm_runtime_init(struct device *dev); - - initialize the device run-time PM fields in 'struct dev_pm_info' + - initialize the device runtime PM fields in 'struct dev_pm_info' void pm_runtime_remove(struct device *dev); - - make sure that the run-time PM of the device will be disabled after + - make sure that the runtime PM of the device will be disabled after removing the device from device hierarchy int pm_runtime_idle(struct device *dev); @@ -289,9 +301,10 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: int pm_runtime_suspend(struct device *dev); - execute the subsystem-level suspend callback for the device; returns 0 on - success, 1 if the device's run-time PM status was already 'suspended', or + success, 1 if the device's runtime PM status was already 'suspended', or error code on failure, where -EAGAIN or -EBUSY means it is safe to attempt - to suspend the device again in future + to suspend the device again in future and -EACCES means that + 'power.disable_depth' is different from 0 int pm_runtime_autosuspend(struct device *dev); - same as pm_runtime_suspend() except that the autosuspend delay is taken @@ -301,10 +314,11 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: int pm_runtime_resume(struct device *dev); - execute the subsystem-level resume callback for the device; returns 0 on - success, 1 if the device's run-time PM status was already 'active' or + success, 1 if the device's runtime PM status was already 'active' or error code on failure, where -EAGAIN means it may be safe to attempt to resume the device again in future, but 'power.runtime_error' should be - checked additionally + checked additionally, and -EACCES means that 'power.disable_depth' is + different from 0 int pm_request_idle(struct device *dev); - submit a request to execute the subsystem-level idle callback for the @@ -321,7 +335,7 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: device in future, where 'delay' is the time to wait before queuing up a suspend work item in pm_wq, in milliseconds (if 'delay' is zero, the work item is queued up immediately); returns 0 on success, 1 if the device's PM - run-time status was already 'suspended', or error code if the request + runtime status was already 'suspended', or error code if the request hasn't been scheduled (or queued up if 'delay' is 0); if the execution of ->runtime_suspend() is already scheduled and not yet expired, the new value of 'delay' will be used as the time to wait @@ -329,7 +343,7 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: int pm_request_resume(struct device *dev); - submit a request to execute the subsystem-level resume callback for the device (the request is represented by a work item in pm_wq); returns 0 on - success, 1 if the device's run-time PM status was already 'active', or + success, 1 if the device's runtime PM status was already 'active', or error code if the request hasn't been queued up void pm_runtime_get_noresume(struct device *dev); @@ -367,22 +381,32 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: pm_runtime_autosuspend(dev) and return its result void pm_runtime_enable(struct device *dev); - - enable the run-time PM helper functions to run the device bus type's - run-time PM callbacks described in Section 2 + - decrement the device's 'power.disable_depth' field; if that field is equal + to zero, the runtime PM helper functions can execute subsystem-level + callbacks described in Section 2 for the device int pm_runtime_disable(struct device *dev); - - prevent the run-time PM helper functions from running subsystem-level - run-time PM callbacks for the device, make sure that all of the pending - run-time PM operations on the device are either completed or canceled; + - increment the device's 'power.disable_depth' field (if the value of that + field was previously zero, this prevents subsystem-level runtime PM + callbacks from being run for the device), make sure that all of the pending + runtime PM operations on the device are either completed or canceled; returns 1 if there was a resume request pending and it was necessary to execute the subsystem-level resume callback for the device to satisfy that request, otherwise 0 is returned + int pm_runtime_barrier(struct device *dev); + - check if there's a resume request pending for the device and resume it + (synchronously) in that case, cancel any other pending runtime PM requests + regarding it and wait for all runtime PM operations on it in progress to + complete; returns 1 if there was a resume request pending and it was + necessary to execute the subsystem-level resume callback for the device to + satisfy that request, otherwise 0 is returned + void pm_suspend_ignore_children(struct device *dev, bool enable); - set/unset the power.ignore_children flag of the device int pm_runtime_set_active(struct device *dev); - - clear the device's 'power.runtime_error' flag, set the device's run-time + - clear the device's 'power.runtime_error' flag, set the device's runtime PM status to 'active' and update its parent's counter of 'active' children as appropriate (it is only valid to use this function if 'power.runtime_error' is set or 'power.disable_depth' is greater than @@ -390,7 +414,7 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: which is not active and the 'power.ignore_children' flag of which is unset void pm_runtime_set_suspended(struct device *dev); - - clear the device's 'power.runtime_error' flag, set the device's run-time + - clear the device's 'power.runtime_error' flag, set the device's runtime PM status to 'suspended' and update its parent's counter of 'active' children as appropriate (it is only valid to use this function if 'power.runtime_error' is set or 'power.disable_depth' is greater than @@ -400,6 +424,9 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: - return true if the device's runtime PM status is 'suspended' and its 'power.disable_depth' field is equal to zero, or false otherwise + bool pm_runtime_status_suspended(struct device *dev); + - return true if the device's runtime PM status is 'suspended' + void pm_runtime_allow(struct device *dev); - set the power.runtime_auto flag for the device and decrease its usage counter (used by the /sys/devices/.../power/control interface to @@ -411,14 +438,13 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: effectively prevent the device from being power managed at run time) void pm_runtime_no_callbacks(struct device *dev); - - set the power.no_callbacks flag for the device and remove the run-time + - set the power.no_callbacks flag for the device and remove the runtime PM attributes from /sys/devices/.../power (or prevent them from being added when the device is registered) void pm_runtime_irq_safe(struct device *dev); - set the power.irq_safe flag for the device, causing the runtime-PM - suspend and resume callbacks (but not the idle callback) to be invoked - with interrupts disabled + callbacks to be invoked with interrupts off void pm_runtime_mark_last_busy(struct device *dev); - set the power.last_busy field to the current time @@ -431,7 +457,7 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); - set the power.autosuspend_delay value to 'delay' (expressed in - milliseconds); if 'delay' is negative then run-time suspends are + milliseconds); if 'delay' is negative then runtime suspends are prevented unsigned long pm_runtime_autosuspend_expiration(struct device *dev); @@ -464,42 +490,44 @@ pm_runtime_autosuspend_expiration() If pm_runtime_irq_safe() has been called for a device then the following helper functions may also be used in interrupt context: +pm_runtime_idle() pm_runtime_suspend() pm_runtime_autosuspend() pm_runtime_resume() pm_runtime_get_sync() +pm_runtime_put_sync() pm_runtime_put_sync_suspend() pm_runtime_put_sync_autosuspend() -5. Run-time PM Initialization, Device Probing and Removal +5. Runtime PM Initialization, Device Probing and Removal -Initially, the run-time PM is disabled for all devices, which means that the -majority of the run-time PM helper funtions described in Section 4 will return +Initially, the runtime PM is disabled for all devices, which means that the +majority of the runtime PM helper funtions described in Section 4 will return -EAGAIN until pm_runtime_enable() is called for the device. -In addition to that, the initial run-time PM status of all devices is +In addition to that, the initial runtime PM status of all devices is 'suspended', but it need not reflect the actual physical state of the device. Thus, if the device is initially active (i.e. it is able to process I/O), its -run-time PM status must be changed to 'active', with the help of +runtime PM status must be changed to 'active', with the help of pm_runtime_set_active(), before pm_runtime_enable() is called for the device. -However, if the device has a parent and the parent's run-time PM is enabled, +However, if the device has a parent and the parent's runtime PM is enabled, calling pm_runtime_set_active() for the device will affect the parent, unless the parent's 'power.ignore_children' flag is set. Namely, in that case the parent won't be able to suspend at run time, using the PM core's helper functions, as long as the child's status is 'active', even if the child's -run-time PM is still disabled (i.e. pm_runtime_enable() hasn't been called for +runtime PM is still disabled (i.e. pm_runtime_enable() hasn't been called for the child yet or pm_runtime_disable() has been called for it). For this reason, once pm_runtime_set_active() has been called for the device, pm_runtime_enable() -should be called for it too as soon as reasonably possible or its run-time PM +should be called for it too as soon as reasonably possible or its runtime PM status should be changed back to 'suspended' with the help of pm_runtime_set_suspended(). -If the default initial run-time PM status of the device (i.e. 'suspended') +If the default initial runtime PM status of the device (i.e. 'suspended') reflects the actual state of the device, its bus type's or its driver's ->probe() callback will likely need to wake it up using one of the PM core's helper functions described in Section 4. In that case, pm_runtime_resume() -should be used. Of course, for this purpose the device's run-time PM has to be +should be used. Of course, for this purpose the device's runtime PM has to be enabled earlier by calling pm_runtime_enable(). If the device bus type's or driver's ->probe() callback runs @@ -530,33 +558,33 @@ The user space can effectively disallow the driver of the device to power manage it at run time by changing the value of its /sys/devices/.../power/control attribute to "on", which causes pm_runtime_forbid() to be called. In principle, this mechanism may also be used by the driver to effectively turn off the -run-time power management of the device until the user space turns it on. -Namely, during the initialization the driver can make sure that the run-time PM +runtime power management of the device until the user space turns it on. +Namely, during the initialization the driver can make sure that the runtime PM status of the device is 'active' and call pm_runtime_forbid(). It should be noted, however, that if the user space has already intentionally changed the value of /sys/devices/.../power/control to "auto" to allow the driver to power manage the device at run time, the driver may confuse it by using pm_runtime_forbid() this way. -6. Run-time PM and System Sleep +6. Runtime PM and System Sleep -Run-time PM and system sleep (i.e., system suspend and hibernation, also known +Runtime PM and system sleep (i.e., system suspend and hibernation, also known as suspend-to-RAM and suspend-to-disk) interact with each other in a couple of ways. If a device is active when a system sleep starts, everything is straightforward. But what should happen if the device is already suspended? -The device may have different wake-up settings for run-time PM and system sleep. -For example, remote wake-up may be enabled for run-time suspend but disallowed +The device may have different wake-up settings for runtime PM and system sleep. +For example, remote wake-up may be enabled for runtime suspend but disallowed for system sleep (device_may_wakeup(dev) returns 'false'). When this happens, the subsystem-level system suspend callback is responsible for changing the device's wake-up setting (it may leave that to the device driver's system suspend routine). It may be necessary to resume the device and suspend it again in order to do so. The same is true if the driver uses different power levels -or other settings for run-time suspend and system sleep. +or other settings for runtime suspend and system sleep. -During system resume, devices generally should be brought back to full power, -even if they were suspended before the system sleep began. There are several -reasons for this, including: +During system resume, the simplest approach is to bring all devices back to full +power, even if they had been suspended before the system suspend began. There +are several reasons for this, including: * The device might need to switch power levels, wake-up settings, etc. @@ -571,18 +599,50 @@ reasons for this, including: * The device might need to be reset. * Even though the device was suspended, if its usage counter was > 0 then most - likely it would need a run-time resume in the near future anyway. - - * Always going back to full power is simplest. + likely it would need a runtime resume in the near future anyway. -If the device was suspended before the sleep began, then its run-time PM status -will have to be updated to reflect the actual post-system sleep status. The way -to do this is: +If the device had been suspended before the system suspend began and it's +brought back to full power during resume, then its runtime PM status will have +to be updated to reflect the actual post-system sleep status. The way to do +this is: pm_runtime_disable(dev); pm_runtime_set_active(dev); pm_runtime_enable(dev); +The PM core always increments the runtime usage counter before calling the +->suspend() callback and decrements it after calling the ->resume() callback. +Hence disabling runtime PM temporarily like this will not cause any runtime +suspend attempts to be permanently lost. If the usage count goes to zero +following the return of the ->resume() callback, the ->runtime_idle() callback +will be invoked as usual. + +On some systems, however, system sleep is not entered through a global firmware +or hardware operation. Instead, all hardware components are put into low-power +states directly by the kernel in a coordinated way. Then, the system sleep +state effectively follows from the states the hardware components end up in +and the system is woken up from that state by a hardware interrupt or a similar +mechanism entirely under the kernel's control. As a result, the kernel never +gives control away and the states of all devices during resume are precisely +known to it. If that is the case and none of the situations listed above takes +place (in particular, if the system is not waking up from hibernation), it may +be more efficient to leave the devices that had been suspended before the system +suspend began in the suspended state. + +The PM core does its best to reduce the probability of race conditions between +the runtime PM and system suspend/resume (and hibernation) callbacks by carrying +out the following operations: + + * During system suspend it calls pm_runtime_get_noresume() and + pm_runtime_barrier() for every device right before executing the + subsystem-level .suspend() callback for it. In addition to that it calls + pm_runtime_disable() for every device right after executing the + subsystem-level .suspend() callback for it. + + * During system resume it calls pm_runtime_enable() and pm_runtime_put_sync() + for every device right before and right after executing the subsystem-level + .resume() callback for it, respectively. + 7. Generic subsystem callbacks Subsystems may wish to conserve code space by using the set of generic power @@ -607,40 +667,68 @@ driver/base/power/generic_ops.c: callback provided by its driver and return its result, or return 0 if not defined + int pm_generic_suspend_noirq(struct device *dev); + - if pm_runtime_suspended(dev) returns "false", invoke the ->suspend_noirq() + callback provided by the device's driver and return its result, or return + 0 if not defined + int pm_generic_resume(struct device *dev); - invoke the ->resume() callback provided by the driver of this device and, if successful, change the device's runtime PM status to 'active' + int pm_generic_resume_noirq(struct device *dev); + - invoke the ->resume_noirq() callback provided by the driver of this device + int pm_generic_freeze(struct device *dev); - if the device has not been suspended at run time, invoke the ->freeze() callback provided by its driver and return its result, or return 0 if not defined + int pm_generic_freeze_noirq(struct device *dev); + - if pm_runtime_suspended(dev) returns "false", invoke the ->freeze_noirq() + callback provided by the device's driver and return its result, or return + 0 if not defined + int pm_generic_thaw(struct device *dev); - if the device has not been suspended at run time, invoke the ->thaw() callback provided by its driver and return its result, or return 0 if not defined + int pm_generic_thaw_noirq(struct device *dev); + - if pm_runtime_suspended(dev) returns "false", invoke the ->thaw_noirq() + callback provided by the device's driver and return its result, or return + 0 if not defined + int pm_generic_poweroff(struct device *dev); - if the device has not been suspended at run time, invoke the ->poweroff() callback provided by its driver and return its result, or return 0 if not defined + int pm_generic_poweroff_noirq(struct device *dev); + - if pm_runtime_suspended(dev) returns "false", run the ->poweroff_noirq() + callback provided by the device's driver and return its result, or return + 0 if not defined + int pm_generic_restore(struct device *dev); - invoke the ->restore() callback provided by the driver of this device and, if successful, change the device's runtime PM status to 'active' + int pm_generic_restore_noirq(struct device *dev); + - invoke the ->restore_noirq() callback provided by the device's driver + These functions can be assigned to the ->runtime_idle(), ->runtime_suspend(), -->runtime_resume(), ->suspend(), ->resume(), ->freeze(), ->thaw(), ->poweroff(), -or ->restore() callback pointers in the subsystem-level dev_pm_ops structures. +->runtime_resume(), ->suspend(), ->suspend_noirq(), ->resume(), +->resume_noirq(), ->freeze(), ->freeze_noirq(), ->thaw(), ->thaw_noirq(), +->poweroff(), ->poweroff_noirq(), ->restore(), ->restore_noirq() callback +pointers in the subsystem-level dev_pm_ops structures. If a subsystem wishes to use all of them at the same time, it can simply assign the GENERIC_SUBSYS_PM_OPS macro, defined in include/linux/pm.h, to its dev_pm_ops structure pointer. Device drivers that wish to use the same function as a system suspend, freeze, -poweroff and run-time suspend callback, and similarly for system resume, thaw, -restore, and run-time resume, can achieve this with the help of the +poweroff and runtime suspend callback, and similarly for system resume, thaw, +restore, and runtime resume, can achieve this with the help of the UNIVERSAL_DEV_PM_OPS macro defined in include/linux/pm.h (possibly setting its last argument to NULL). @@ -650,7 +738,7 @@ Some "devices" are only logical sub-devices of their parent and cannot be power-managed on their own. (The prototype example is a USB interface. Entire USB devices can go into low-power mode or send wake-up requests, but neither is possible for individual interfaces.) The drivers for these devices have no -need of run-time PM callbacks; if the callbacks did exist, ->runtime_suspend() +need of runtime PM callbacks; if the callbacks did exist, ->runtime_suspend() and ->runtime_resume() would always return 0 without doing anything else and ->runtime_idle() would always call pm_runtime_suspend(). @@ -658,7 +746,7 @@ Subsystems can tell the PM core about these devices by calling pm_runtime_no_callbacks(). This should be done after the device structure is initialized and before it is registered (although after device registration is also okay). The routine will set the device's power.no_callbacks flag and -prevent the non-debugging run-time PM sysfs attributes from being created. +prevent the non-debugging runtime PM sysfs attributes from being created. When power.no_callbacks is set, the PM core will not invoke the ->runtime_idle(), ->runtime_suspend(), or ->runtime_resume() callbacks. @@ -666,7 +754,7 @@ Instead it will assume that suspends and resumes always succeed and that idle devices should be suspended. As a consequence, the PM core will never directly inform the device's subsystem -or driver about run-time power changes. Instead, the driver for the device's +or driver about runtime power changes. Instead, the driver for the device's parent must take responsibility for telling the device's driver when the parent's power state changes. @@ -677,13 +765,13 @@ A device should be put in a low-power state only when there's some reason to think it will remain in that state for a substantial time. A common heuristic says that a device which hasn't been used for a while is liable to remain unused; following this advice, drivers should not allow devices to be suspended -at run-time until they have been inactive for some minimum period. Even when +at runtime until they have been inactive for some minimum period. Even when the heuristic ends up being non-optimal, it will still prevent devices from "bouncing" too rapidly between low-power and full-power states. The term "autosuspend" is an historical remnant. It doesn't mean that the device is automatically suspended (the subsystem or driver still has to call -the appropriate PM routines); rather it means that run-time suspends will +the appropriate PM routines); rather it means that runtime suspends will automatically be delayed until the desired period of inactivity has elapsed. Inactivity is determined based on the power.last_busy field. Drivers should diff --git a/Documentation/power/suspend-and-cpuhotplug.txt b/Documentation/power/suspend-and-cpuhotplug.txt new file mode 100644 index 0000000..f28f9a6 --- /dev/null +++ b/Documentation/power/suspend-and-cpuhotplug.txt @@ -0,0 +1,275 @@ +Interaction of Suspend code (S3) with the CPU hotplug infrastructure + + (C) 2011 Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> + + +I. How does the regular CPU hotplug code differ from how the Suspend-to-RAM + infrastructure uses it internally? And where do they share common code? + +Well, a picture is worth a thousand words... So ASCII art follows :-) + +[This depicts the current design in the kernel, and focusses only on the +interactions involving the freezer and CPU hotplug and also tries to explain +the locking involved. It outlines the notifications involved as well. +But please note that here, only the call paths are illustrated, with the aim +of describing where they take different paths and where they share code. +What happens when regular CPU hotplug and Suspend-to-RAM race with each other +is not depicted here.] + +On a high level, the suspend-resume cycle goes like this: + +|Freeze| -> |Disable nonboot| -> |Do suspend| -> |Enable nonboot| -> |Thaw | +|tasks | | cpus | | | | cpus | |tasks| + + +More details follow: + + Suspend call path + ----------------- + + Write 'mem' to + /sys/power/state + syfs file + | + v + Acquire pm_mutex lock + | + v + Send PM_SUSPEND_PREPARE + notifications + | + v + Freeze tasks + | + | + v + disable_nonboot_cpus() + /* start */ + | + v + Acquire cpu_add_remove_lock + | + v + Iterate over CURRENTLY + online CPUs + | + | + | ---------- + v | L + ======> _cpu_down() | + | [This takes cpuhotplug.lock | + Common | before taking down the CPU | + code | and releases it when done] | O + | While it is at it, notifications | + | are sent when notable events occur, | + ======> by running all registered callbacks. | + | | O + | | + | | + v | + Note down these cpus in | P + frozen_cpus mask ---------- + | + v + Disable regular cpu hotplug + by setting cpu_hotplug_disabled=1 + | + v + Release cpu_add_remove_lock + | + v + /* disable_nonboot_cpus() complete */ + | + v + Do suspend + + + +Resuming back is likewise, with the counterparts being (in the order of +execution during resume): +* enable_nonboot_cpus() which involves: + | Acquire cpu_add_remove_lock + | Reset cpu_hotplug_disabled to 0, thereby enabling regular cpu hotplug + | Call _cpu_up() [for all those cpus in the frozen_cpus mask, in a loop] + | Release cpu_add_remove_lock + v + +* thaw tasks +* send PM_POST_SUSPEND notifications +* Release pm_mutex lock. + + +It is to be noted here that the pm_mutex lock is acquired at the very +beginning, when we are just starting out to suspend, and then released only +after the entire cycle is complete (i.e., suspend + resume). + + + + Regular CPU hotplug call path + ----------------------------- + + Write 0 (or 1) to + /sys/devices/system/cpu/cpu*/online + sysfs file + | + | + v + cpu_down() + | + v + Acquire cpu_add_remove_lock + | + v + If cpu_hotplug_disabled is 1 + return gracefully + | + | + v + ======> _cpu_down() + | [This takes cpuhotplug.lock + Common | before taking down the CPU + code | and releases it when done] + | While it is at it, notifications + | are sent when notable events occur, + ======> by running all registered callbacks. + | + | + v + Release cpu_add_remove_lock + [That's it!, for + regular CPU hotplug] + + + +So, as can be seen from the two diagrams (the parts marked as "Common code"), +regular CPU hotplug and the suspend code path converge at the _cpu_down() and +_cpu_up() functions. They differ in the arguments passed to these functions, +in that during regular CPU hotplug, 0 is passed for the 'tasks_frozen' +argument. But during suspend, since the tasks are already frozen by the time +the non-boot CPUs are offlined or onlined, the _cpu_*() functions are called +with the 'tasks_frozen' argument set to 1. +[See below for some known issues regarding this.] + + +Important files and functions/entry points: +------------------------------------------ + +kernel/power/process.c : freeze_processes(), thaw_processes() +kernel/power/suspend.c : suspend_prepare(), suspend_enter(), suspend_finish() +kernel/cpu.c: cpu_[up|down](), _cpu_[up|down](), [disable|enable]_nonboot_cpus() + + + +II. What are the issues involved in CPU hotplug? + ------------------------------------------- + +There are some interesting situations involving CPU hotplug and microcode +update on the CPUs, as discussed below: + +[Please bear in mind that the kernel requests the microcode images from +userspace, using the request_firmware() function defined in +drivers/base/firmware_class.c] + + +a. When all the CPUs are identical: + + This is the most common situation and it is quite straightforward: we want + to apply the same microcode revision to each of the CPUs. + To give an example of x86, the collect_cpu_info() function defined in + arch/x86/kernel/microcode_core.c helps in discovering the type of the CPU + and thereby in applying the correct microcode revision to it. + But note that the kernel does not maintain a common microcode image for the + all CPUs, in order to handle case 'b' described below. + + +b. When some of the CPUs are different than the rest: + + In this case since we probably need to apply different microcode revisions + to different CPUs, the kernel maintains a copy of the correct microcode + image for each CPU (after appropriate CPU type/model discovery using + functions such as collect_cpu_info()). + + +c. When a CPU is physically hot-unplugged and a new (and possibly different + type of) CPU is hot-plugged into the system: + + In the current design of the kernel, whenever a CPU is taken offline during + a regular CPU hotplug operation, upon receiving the CPU_DEAD notification + (which is sent by the CPU hotplug code), the microcode update driver's + callback for that event reacts by freeing the kernel's copy of the + microcode image for that CPU. + + Hence, when a new CPU is brought online, since the kernel finds that it + doesn't have the microcode image, it does the CPU type/model discovery + afresh and then requests the userspace for the appropriate microcode image + for that CPU, which is subsequently applied. + + For example, in x86, the mc_cpu_callback() function (which is the microcode + update driver's callback registered for CPU hotplug events) calls + microcode_update_cpu() which would call microcode_init_cpu() in this case, + instead of microcode_resume_cpu() when it finds that the kernel doesn't + have a valid microcode image. This ensures that the CPU type/model + discovery is performed and the right microcode is applied to the CPU after + getting it from userspace. + + +d. Handling microcode update during suspend/hibernate: + + Strictly speaking, during a CPU hotplug operation which does not involve + physically removing or inserting CPUs, the CPUs are not actually powered + off during a CPU offline. They are just put to the lowest C-states possible. + Hence, in such a case, it is not really necessary to re-apply microcode + when the CPUs are brought back online, since they wouldn't have lost the + image during the CPU offline operation. + + This is the usual scenario encountered during a resume after a suspend. + However, in the case of hibernation, since all the CPUs are completely + powered off, during restore it becomes necessary to apply the microcode + images to all the CPUs. + + [Note that we don't expect someone to physically pull out nodes and insert + nodes with a different type of CPUs in-between a suspend-resume or a + hibernate/restore cycle.] + + In the current design of the kernel however, during a CPU offline operation + as part of the suspend/hibernate cycle (the CPU_DEAD_FROZEN notification), + the existing copy of microcode image in the kernel is not freed up. + And during the CPU online operations (during resume/restore), since the + kernel finds that it already has copies of the microcode images for all the + CPUs, it just applies them to the CPUs, avoiding any re-discovery of CPU + type/model and the need for validating whether the microcode revisions are + right for the CPUs or not (due to the above assumption that physical CPU + hotplug will not be done in-between suspend/resume or hibernate/restore + cycles). + + +III. Are there any known problems when regular CPU hotplug and suspend race + with each other? + +Yes, they are listed below: + +1. When invoking regular CPU hotplug, the 'tasks_frozen' argument passed to + the _cpu_down() and _cpu_up() functions is *always* 0. + This might not reflect the true current state of the system, since the + tasks could have been frozen by an out-of-band event such as a suspend + operation in progress. Hence, it will lead to wrong notifications being + sent during the cpu online/offline events (eg, CPU_ONLINE notification + instead of CPU_ONLINE_FROZEN) which in turn will lead to execution of + inappropriate code by the callbacks registered for such CPU hotplug events. + +2. If a regular CPU hotplug stress test happens to race with the freezer due + to a suspend operation in progress at the same time, then we could hit the + situation described below: + + * A regular cpu online operation continues its journey from userspace + into the kernel, since the freezing has not yet begun. + * Then freezer gets to work and freezes userspace. + * If cpu online has not yet completed the microcode update stuff by now, + it will now start waiting on the frozen userspace in the + TASK_UNINTERRUPTIBLE state, in order to get the microcode image. + * Now the freezer continues and tries to freeze the remaining tasks. But + due to this wait mentioned above, the freezer won't be able to freeze + the cpu online hotplug task and hence freezing of tasks fails. + + As a result of this task freezing failure, the suspend operation gets + aborted. diff --git a/Documentation/power/userland-swsusp.txt b/Documentation/power/userland-swsusp.txt index 1101bee..0e87082 100644 --- a/Documentation/power/userland-swsusp.txt +++ b/Documentation/power/userland-swsusp.txt @@ -77,7 +77,8 @@ SNAPSHOT_SET_SWAP_AREA - set the resume partition and the offset (in <PAGE_SIZE> resume_swap_area, as defined in kernel/power/suspend_ioctls.h, containing the resume device specification and the offset); for swap partitions the offset is always 0, but it is different from zero for - swap files (see Documentation/swsusp-and-swap-files.txt for details). + swap files (see Documentation/power/swsusp-and-swap-files.txt for + details). SNAPSHOT_PLATFORM_SUPPORT - enable/disable the hibernation platform support, depending on the argument value (enable, if the argument is nonzero) diff --git a/Documentation/ramoops.txt b/Documentation/ramoops.txt new file mode 100644 index 0000000..8fb1ba7 --- /dev/null +++ b/Documentation/ramoops.txt @@ -0,0 +1,76 @@ +Ramoops oops/panic logger +========================= + +Sergiu Iordache <sergiu@chromium.org> + +Updated: 8 August 2011 + +0. Introduction + +Ramoops is an oops/panic logger that writes its logs to RAM before the system +crashes. It works by logging oopses and panics in a circular buffer. Ramoops +needs a system with persistent RAM so that the content of that area can +survive after a restart. + +1. Ramoops concepts + +Ramoops uses a predefined memory area to store the dump. The start and size of +the memory area are set using two variables: + * "mem_address" for the start + * "mem_size" for the size. The memory size will be rounded down to a + power of two. + +The memory area is divided into "record_size" chunks (also rounded down to +power of two) and each oops/panic writes a "record_size" chunk of +information. + +Dumping both oopses and panics can be done by setting 1 in the "dump_oops" +variable while setting 0 in that variable dumps only the panics. + +The module uses a counter to record multiple dumps but the counter gets reset +on restart (i.e. new dumps after the restart will overwrite old ones). + +2. Setting the parameters + +Setting the ramoops parameters can be done in 2 different manners: + 1. Use the module parameters (which have the names of the variables described + as before). + 2. Use a platform device and set the platform data. The parameters can then + be set through that platform data. An example of doing that is: + +#include <linux/ramoops.h> +[...] + +static struct ramoops_platform_data ramoops_data = { + .mem_size = <...>, + .mem_address = <...>, + .record_size = <...>, + .dump_oops = <...>, +}; + +static struct platform_device ramoops_dev = { + .name = "ramoops", + .dev = { + .platform_data = &ramoops_data, + }, +}; + +[... inside a function ...] +int ret; + +ret = platform_device_register(&ramoops_dev); +if (ret) { + printk(KERN_ERR "unable to register platform device\n"); + return ret; +} + +3. Dump format + +The data dump begins with a header, currently defined as "====" followed by a +timestamp and a new line. The dump then continues with the actual data. + +4. Reading the data + +The dump data can be read from memory (through /dev/mem or other means). +Getting the module parameters, which are needed in order to parse the data, can +be done through /sys/module/ramoops/parameters/* . diff --git a/Documentation/rapidio/rapidio.txt b/Documentation/rapidio/rapidio.txt index be70ee1..c75694b 100644 --- a/Documentation/rapidio/rapidio.txt +++ b/Documentation/rapidio/rapidio.txt @@ -144,7 +144,7 @@ and the default device ID in order to access the device on the active port. After the host has completed enumeration of the entire network it releases devices by clearing device ID locks (calls rio_clear_locks()). For each endpoint -in the system, it sets the Master Enable bit in the Port General Control CSR +in the system, it sets the Discovered bit in the Port General Control CSR to indicate that enumeration is completed and agents are allowed to execute passive discovery of the network. diff --git a/Documentation/rapidio/tsi721.txt b/Documentation/rapidio/tsi721.txt new file mode 100644 index 0000000..335f3c6 --- /dev/null +++ b/Documentation/rapidio/tsi721.txt @@ -0,0 +1,49 @@ +RapidIO subsystem mport driver for IDT Tsi721 PCI Express-to-SRIO bridge. +========================================================================= + +I. Overview + +This driver implements all currently defined RapidIO mport callback functions. +It supports maintenance read and write operations, inbound and outbound RapidIO +doorbells, inbound maintenance port-writes and RapidIO messaging. + +To generate SRIO maintenance transactions this driver uses one of Tsi721 DMA +channels. This mechanism provides access to larger range of hop counts and +destination IDs without need for changes in outbound window translation. + +RapidIO messaging support uses dedicated messaging channels for each mailbox. +For inbound messages this driver uses destination ID matching to forward messages +into the corresponding message queue. Messaging callbacks are implemented to be +fully compatible with RIONET driver (Ethernet over RapidIO messaging services). + +II. Known problems + + None. + +III. To do + + Add DMA data transfers (non-messaging). + Add inbound region (SRIO-to-PCIe) mapping. + +IV. Version History + + 1.0.0 - Initial driver release. + +V. License +----------------------------------------------- + + Copyright(c) 2011 Integrated Device Technology, Inc. All rights reserved. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + more details. + + You should have received a copy of the GNU General Public License along with + this program; if not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. diff --git a/Documentation/rbtree.txt b/Documentation/rbtree.txt index 19f8278..8d32d85 100644 --- a/Documentation/rbtree.txt +++ b/Documentation/rbtree.txt @@ -196,15 +196,20 @@ Support for Augmented rbtrees Augmented rbtree is an rbtree with "some" additional data stored in each node. This data can be used to augment some new functionality to rbtree. Augmented rbtree is an optional feature built on top of basic rbtree -infrastructure. rbtree user who wants this feature will have an augment -callback function in rb_root initialized. - -This callback function will be called from rbtree core routines whenever -a node has a change in one or both of its children. It is the responsibility -of the callback function to recalculate the additional data that is in the -rb node using new children information. Note that if this new additional -data affects the parent node's additional data, then callback function has -to handle it and do the recursive updates. +infrastructure. An rbtree user who wants this feature will have to call the +augmentation functions with the user provided augmentation callback +when inserting and erasing nodes. + +On insertion, the user must call rb_augment_insert() once the new node is in +place. This will cause the augmentation function callback to be called for +each node between the new node and the root which has been affected by the +insertion. + +When erasing a node, the user must call rb_augment_erase_begin() first to +retrieve the deepest node on the rebalance path. Then, after erasing the +original node, the user must call rb_augment_erase_end() with the deepest +node found earlier. This will cause the augmentation function to be called +for each affected node between the deepest node and the root. Interval tree is an example of augmented rb tree. Reference - diff --git a/Documentation/rfkill.txt b/Documentation/rfkill.txt index 83668e5..03c9d92 100644 --- a/Documentation/rfkill.txt +++ b/Documentation/rfkill.txt @@ -117,5 +117,4 @@ The contents of these variables corresponds to the "name", "state" and "type" sysfs files explained above. -For further details consult Documentation/ABI/stable/dev-rfkill and -Documentation/ABI/stable/sysfs-class-rfkill. +For further details consult Documentation/ABI/stable/sysfs-class-rfkill. diff --git a/Documentation/s390/TAPE b/Documentation/s390/TAPE deleted file mode 100644 index c639aa5..0000000 --- a/Documentation/s390/TAPE +++ /dev/null @@ -1,122 +0,0 @@ -Channel attached Tape device driver - ------------------------------WARNING----------------------------------------- -This driver is considered to be EXPERIMENTAL. Do NOT use it in -production environments. Feel free to test it and report problems back to us. ------------------------------------------------------------------------------ - -The LINUX for zSeries tape device driver manages channel attached tape drives -which are compatible to IBM 3480 or IBM 3490 magnetic tape subsystems. This -includes various models of these devices (for example the 3490E). - - -Tape driver features - -The device driver supports a maximum of 128 tape devices. -No official LINUX device major number is assigned to the zSeries tape device -driver. It allocates major numbers dynamically and reports them on system -startup. -Typically it will get major number 254 for both the character device front-end -and the block device front-end. - -The tape device driver needs no kernel parameters. All supported devices -present are detected on driver initialization at system startup or module load. -The devices detected are ordered by their subchannel numbers. The device with -the lowest subchannel number becomes device 0, the next one will be device 1 -and so on. - - -Tape character device front-end - -The usual way to read or write to the tape device is through the character -device front-end. The zSeries tape device driver provides two character devices -for each physical device -- the first of these will rewind automatically when -it is closed, the second will not rewind automatically. - -The character device nodes are named /dev/rtibm0 (rewinding) and /dev/ntibm0 -(non-rewinding) for the first device, /dev/rtibm1 and /dev/ntibm1 for the -second, and so on. - -The character device front-end can be used as any other LINUX tape device. You -can write to it and read from it using LINUX facilities such as GNU tar. The -tool mt can be used to perform control operations, such as rewinding the tape -or skipping a file. - -Most LINUX tape software should work with either tape character device. - - -Tape block device front-end - -The tape device may also be accessed as a block device in read-only mode. -This could be used for software installation in the same way as it is used with -other operation systems on the zSeries platform (and most LINUX -distributions are shipped on compact disk using ISO9660 filesystems). - -One block device node is provided for each physical device. These are named -/dev/btibm0 for the first device, /dev/btibm1 for the second and so on. -You should only use the ISO9660 filesystem on LINUX for zSeries tapes because -the physical tape devices cannot perform fast seeks and the ISO9660 system is -optimized for this situation. - - -Tape block device example - -In this example a tape with an ISO9660 filesystem is created using the first -tape device. ISO9660 filesystem support must be built into your system kernel -for this. -The mt command is used to issue tape commands and the mkisofs command to -create an ISO9660 filesystem: - -- create a LINUX directory (somedir) with the contents of the filesystem - mkdir somedir - cp contents somedir - -- insert a tape - -- ensure the tape is at the beginning - mt -f /dev/ntibm0 rewind - -- set the blocksize of the character driver. The blocksize 2048 bytes - is commonly used on ISO9660 CD-Roms - mt -f /dev/ntibm0 setblk 2048 - -- write the filesystem to the character device driver - mkisofs -o /dev/ntibm0 somedir - -- rewind the tape again - mt -f /dev/ntibm0 rewind - -- Now you can mount your new filesystem as a block device: - mount -t iso9660 -o ro,block=2048 /dev/btibm0 /mnt - -TODO List - - - Driver has to be stabilized still - -BUGS - -This driver is considered BETA, which means some weaknesses may still -be in it. -If an error occurs which cannot be handled by the code you will get a -sense-data dump.In that case please do the following: - -1. set the tape driver debug level to maximum: - echo 6 >/proc/s390dbf/tape/level - -2. re-perform the actions which produced the bug. (Hopefully the bug will - reappear.) - -3. get a snapshot from the debug-feature: - cat /proc/s390dbf/tape/hex_ascii >somefile - -4. Now put the snapshot together with a detailed description of the situation - that led to the bug: - - Which tool did you use? - - Which hardware do you have? - - Was your tape unit online? - - Is it a shared tape unit? - -5. Send an email with your bug report to: - mailto:Linux390@de.ibm.com - - diff --git a/Documentation/scheduler/sched-arch.txt b/Documentation/scheduler/sched-arch.txt index d43dbcb..28aa107 100644 --- a/Documentation/scheduler/sched-arch.txt +++ b/Documentation/scheduler/sched-arch.txt @@ -66,7 +66,7 @@ Your cpu_idle routines need to obey the following rules: barrier issued (followed by a test of need_resched with interrupts disabled, as explained in 3). -arch/i386/kernel/process.c has examples of both polling and +arch/x86/kernel/process.c has examples of both polling and sleeping idle functions. diff --git a/Documentation/scheduler/sched-bwc.txt b/Documentation/scheduler/sched-bwc.txt new file mode 100644 index 0000000..f6b1873 --- /dev/null +++ b/Documentation/scheduler/sched-bwc.txt @@ -0,0 +1,122 @@ +CFS Bandwidth Control +===================== + +[ This document only discusses CPU bandwidth control for SCHED_NORMAL. + The SCHED_RT case is covered in Documentation/scheduler/sched-rt-group.txt ] + +CFS bandwidth control is a CONFIG_FAIR_GROUP_SCHED extension which allows the +specification of the maximum CPU bandwidth available to a group or hierarchy. + +The bandwidth allowed for a group is specified using a quota and period. Within +each given "period" (microseconds), a group is allowed to consume only up to +"quota" microseconds of CPU time. When the CPU bandwidth consumption of a +group exceeds this limit (for that period), the tasks belonging to its +hierarchy will be throttled and are not allowed to run again until the next +period. + +A group's unused runtime is globally tracked, being refreshed with quota units +above at each period boundary. As threads consume this bandwidth it is +transferred to cpu-local "silos" on a demand basis. The amount transferred +within each of these updates is tunable and described as the "slice". + +Management +---------- +Quota and period are managed within the cpu subsystem via cgroupfs. + +cpu.cfs_quota_us: the total available run-time within a period (in microseconds) +cpu.cfs_period_us: the length of a period (in microseconds) +cpu.stat: exports throttling statistics [explained further below] + +The default values are: + cpu.cfs_period_us=100ms + cpu.cfs_quota=-1 + +A value of -1 for cpu.cfs_quota_us indicates that the group does not have any +bandwidth restriction in place, such a group is described as an unconstrained +bandwidth group. This represents the traditional work-conserving behavior for +CFS. + +Writing any (valid) positive value(s) will enact the specified bandwidth limit. +The minimum quota allowed for the quota or period is 1ms. There is also an +upper bound on the period length of 1s. Additional restrictions exist when +bandwidth limits are used in a hierarchical fashion, these are explained in +more detail below. + +Writing any negative value to cpu.cfs_quota_us will remove the bandwidth limit +and return the group to an unconstrained state once more. + +Any updates to a group's bandwidth specification will result in it becoming +unthrottled if it is in a constrained state. + +System wide settings +-------------------- +For efficiency run-time is transferred between the global pool and CPU local +"silos" in a batch fashion. This greatly reduces global accounting pressure +on large systems. The amount transferred each time such an update is required +is described as the "slice". + +This is tunable via procfs: + /proc/sys/kernel/sched_cfs_bandwidth_slice_us (default=5ms) + +Larger slice values will reduce transfer overheads, while smaller values allow +for more fine-grained consumption. + +Statistics +---------- +A group's bandwidth statistics are exported via 3 fields in cpu.stat. + +cpu.stat: +- nr_periods: Number of enforcement intervals that have elapsed. +- nr_throttled: Number of times the group has been throttled/limited. +- throttled_time: The total time duration (in nanoseconds) for which entities + of the group have been throttled. + +This interface is read-only. + +Hierarchical considerations +--------------------------- +The interface enforces that an individual entity's bandwidth is always +attainable, that is: max(c_i) <= C. However, over-subscription in the +aggregate case is explicitly allowed to enable work-conserving semantics +within a hierarchy. + e.g. \Sum (c_i) may exceed C +[ Where C is the parent's bandwidth, and c_i its children ] + + +There are two ways in which a group may become throttled: + a. it fully consumes its own quota within a period + b. a parent's quota is fully consumed within its period + +In case b) above, even though the child may have runtime remaining it will not +be allowed to until the parent's runtime is refreshed. + +Examples +-------- +1. Limit a group to 1 CPU worth of runtime. + + If period is 250ms and quota is also 250ms, the group will get + 1 CPU worth of runtime every 250ms. + + # echo 250000 > cpu.cfs_quota_us /* quota = 250ms */ + # echo 250000 > cpu.cfs_period_us /* period = 250ms */ + +2. Limit a group to 2 CPUs worth of runtime on a multi-CPU machine. + + With 500ms period and 1000ms quota, the group can get 2 CPUs worth of + runtime every 500ms. + + # echo 1000000 > cpu.cfs_quota_us /* quota = 1000ms */ + # echo 500000 > cpu.cfs_period_us /* period = 500ms */ + + The larger period here allows for increased burst capacity. + +3. Limit a group to 20% of 1 CPU. + + With 50ms period, 10ms quota will be equivalent to 20% of 1 CPU. + + # echo 10000 > cpu.cfs_quota_us /* quota = 10ms */ + # echo 50000 > cpu.cfs_period_us /* period = 50ms */ + + By using a small period here we are ensuring a consistent latency + response at the expense of burst capacity. + diff --git a/Documentation/scsi/00-INDEX b/Documentation/scsi/00-INDEX index c2e18e1..b48ded5 100644 --- a/Documentation/scsi/00-INDEX +++ b/Documentation/scsi/00-INDEX @@ -28,6 +28,8 @@ LICENSE.FlashPoint - Licence of the Flashpoint driver LICENSE.qla2xxx - License for QLogic Linux Fibre Channel HBA Driver firmware. +LICENSE.qla4xxx + - License for QLogic Linux iSCSI HBA Driver. Mylex.txt - info on driver for Mylex adapters NinjaSCSI.txt diff --git a/Documentation/scsi/BusLogic.txt b/Documentation/scsi/BusLogic.txt index d7fbc94..48e982c 100644 --- a/Documentation/scsi/BusLogic.txt +++ b/Documentation/scsi/BusLogic.txt @@ -553,7 +553,7 @@ replacing "/usr/src" with wherever you keep your Linux kernel source tree: make config make zImage -Then install "arch/i386/boot/zImage" as your standard kernel, run lilo if +Then install "arch/x86/boot/zImage" as your standard kernel, run lilo if appropriate, and reboot. diff --git a/Documentation/scsi/ChangeLog.megaraid_sas b/Documentation/scsi/ChangeLog.megaraid_sas index 9ed1d9d..64adb98 100644 --- a/Documentation/scsi/ChangeLog.megaraid_sas +++ b/Documentation/scsi/ChangeLog.megaraid_sas @@ -1,3 +1,26 @@ +Release Date : Wed. Oct 5, 2011 17:00:00 PST 2010 - + (emaild-id:megaraidlinux@lsi.com) + Adam Radford +Current Version : 00.00.06.12-rc1 +Old Version : 00.00.05.40-rc1 + 1. Continue booting immediately if FW in FAULT at driver load time. + 2. Increase default cmds per lun to 256. + 3. Fix mismatch in megasas_reset_fusion() mutex lock-unlock. + 4. Remove some un-necessary code. + 5. Clear state change interrupts for Fusion/Invader. + 6. Clear FUSION_IN_RESET before enabling interrupts. + 7. Add support for MegaRAID 9360/9380 12GB/s controllers. + 8. Add multiple MSI-X vector/multiple reply queue support. + 9. Add driver workaround for PERC5/1068 kdump kernel panic. +------------------------------------------------------------------------------- +Release Date : Tue. Jul 26, 2011 17:00:00 PST 2010 - + (emaild-id:megaraidlinux@lsi.com) + Adam Radford +Current Version : 00.00.05.40-rc1 +Old Version : 00.00.05.38-rc1 + 1. Fix FastPath I/O to work with degraded RAID 1. + 2. Add .change_queue_depth support. +------------------------------------------------------------------------------- Release Date : Wed. May 11, 2011 17:00:00 PST 2010 - (emaild-id:megaraidlinux@lsi.com) Adam Radford diff --git a/Documentation/scsi/LICENSE.qla4xxx b/Documentation/scsi/LICENSE.qla4xxx new file mode 100644 index 0000000..494980e --- /dev/null +++ b/Documentation/scsi/LICENSE.qla4xxx @@ -0,0 +1,310 @@ +Copyright (c) 2003-2011 QLogic Corporation +QLogic Linux iSCSI HBA Driver + +This program includes a device driver for Linux 3.x. +You may modify and redistribute the device driver code under the +GNU General Public License (a copy of which is attached hereto as +Exhibit A) published by the Free Software Foundation (version 2). + +REGARDLESS OF WHAT LICENSING MECHANISM IS USED OR APPLICABLE, +THIS PROGRAM IS PROVIDED BY QLOGIC CORPORATION "AS IS'' AND ANY +EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. 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For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. diff --git a/Documentation/scsi/aic7xxx_old.txt b/Documentation/scsi/aic7xxx_old.txt index 7bd210a..ecfc474 100644 --- a/Documentation/scsi/aic7xxx_old.txt +++ b/Documentation/scsi/aic7xxx_old.txt @@ -444,7 +444,7 @@ linux-1.1.x and fairly stable since linux-1.2.x, and are also in FreeBSD Kernel Compile options ------------------------------ The various kernel compile time options for this driver are now fairly - well documented in the file Documentation/Configure.help. In order to + well documented in the file drivers/scsi/Kconfig. In order to see this documentation, you need to use one of the advanced configuration programs (menuconfig and xconfig). If you are using the "make menuconfig" method of configuring your kernel, then you would simply highlight the diff --git a/Documentation/scsi/bnx2fc.txt b/Documentation/scsi/bnx2fc.txt new file mode 100644 index 0000000..8082355 --- /dev/null +++ b/Documentation/scsi/bnx2fc.txt @@ -0,0 +1,75 @@ +Operating FCoE using bnx2fc +=========================== +Broadcom FCoE offload through bnx2fc is full stateful hardware offload that +cooperates with all interfaces provided by the Linux ecosystem for FC/FCoE and +SCSI controllers. As such, FCoE functionality, once enabled is largely +transparent. Devices discovered on the SAN will be registered and unregistered +automatically with the upper storage layers. + +Despite the fact that the Broadcom's FCoE offload is fully offloaded, it does +depend on the state of the network interfaces to operate. As such, the network +interface (e.g. eth0) associated with the FCoE offload initiator must be 'up'. +It is recommended that the network interfaces be configured to be brought up +automatically at boot time. + +Furthermore, the Broadcom FCoE offload solution creates VLAN interfaces to +support the VLANs that have been discovered for FCoE operation (e.g. +eth0.1001-fcoe). Do not delete or disable these interfaces or FCoE operation +will be disrupted. + +Driver Usage Model: +=================== + +1. Ensure that fcoe-utils package is installed. + +2. Configure the interfaces on which bnx2fc driver has to operate on. +Here are the steps to configure: + a. cd /etc/fcoe + b. copy cfg-ethx to cfg-eth5 if FCoE has to be enabled on eth5. + c. Repeat this for all the interfaces where FCoE has to be enabled. + d. Edit all the cfg-eth files to set "no" for DCB_REQUIRED** field, and + "yes" for AUTO_VLAN. + e. Other configuration parameters should be left as default + +3. Ensure that "bnx2fc" is in SUPPORTED_DRIVERS list in /etc/fcoe/config. + +4. Start fcoe service. (service fcoe start). If Broadcom devices are present in +the system, bnx2fc driver would automatically claim the interfaces, starts vlan +discovery and log into the targets. + +5. "Symbolic Name" in 'fcoeadm -i' output would display if bnx2fc has claimed +the interface. +Eg: +[root@bh2 ~]# fcoeadm -i + Description: NetXtreme II BCM57712 10 Gigabit Ethernet + Revision: 01 + Manufacturer: Broadcom Corporation + Serial Number: 0010186FD558 + Driver: bnx2x 1.70.00-0 + Number of Ports: 2 + + Symbolic Name: bnx2fc v1.0.5 over eth5.4 + OS Device Name: host11 + Node Name: 0x10000010186FD559 + Port Name: 0x20000010186FD559 + FabricName: 0x2001000DECB3B681 + Speed: 10 Gbit + Supported Speed: 10 Gbit + MaxFrameSize: 2048 + FC-ID (Port ID): 0x0F0377 + State: Online + +6. Verify the vlan discovery is performed by running ifconfig and notice +<INTERFACE>.<VLAN>-fcoe interfaces are automatically created. + +Refer to fcoeadm manpage for more information on fcoeadm operations to +create/destroy interfaces or to display lun/target information. + +NOTE: +==== +** Broadcom FCoE capable devices implement a DCBX/LLDP client on-chip. Only one +LLDP client is allowed per interface. For proper operation all host software +based DCBX/LLDP clients (e.g. lldpad) must be disabled. To disable lldpad on a +given interface, run the following command: + +lldptool set-lldp -i <interface_name> adminStatus=disabled diff --git a/Documentation/scsi/scsi_mid_low_api.txt b/Documentation/scsi/scsi_mid_low_api.txt index 5f17d29..a340b18 100644 --- a/Documentation/scsi/scsi_mid_low_api.txt +++ b/Documentation/scsi/scsi_mid_low_api.txt @@ -55,11 +55,6 @@ or in the same directory as the C source code. For example to find a url about the USB mass storage driver see the /usr/src/linux/drivers/usb/storage directory. -The Linux kernel source Documentation/DocBook/scsidrivers.tmpl file -refers to this file. With the appropriate DocBook tool-set, this permits -users to generate html, ps and pdf renderings of information within this -file (e.g. the interface functions). - Driver structure ================ Traditionally an LLD for the SCSI subsystem has been at least two files in diff --git a/Documentation/security/keys-ecryptfs.txt b/Documentation/security/keys-ecryptfs.txt new file mode 100644 index 0000000..c3bbeba --- /dev/null +++ b/Documentation/security/keys-ecryptfs.txt @@ -0,0 +1,68 @@ + Encrypted keys for the eCryptfs filesystem + +ECryptfs is a stacked filesystem which transparently encrypts and decrypts each +file using a randomly generated File Encryption Key (FEK). + +Each FEK is in turn encrypted with a File Encryption Key Encryption Key (FEFEK) +either in kernel space or in user space with a daemon called 'ecryptfsd'. In +the former case the operation is performed directly by the kernel CryptoAPI +using a key, the FEFEK, derived from a user prompted passphrase; in the latter +the FEK is encrypted by 'ecryptfsd' with the help of external libraries in order +to support other mechanisms like public key cryptography, PKCS#11 and TPM based +operations. + +The data structure defined by eCryptfs to contain information required for the +FEK decryption is called authentication token and, currently, can be stored in a +kernel key of the 'user' type, inserted in the user's session specific keyring +by the userspace utility 'mount.ecryptfs' shipped with the package +'ecryptfs-utils'. + +The 'encrypted' key type has been extended with the introduction of the new +format 'ecryptfs' in order to be used in conjunction with the eCryptfs +filesystem. Encrypted keys of the newly introduced format store an +authentication token in its payload with a FEFEK randomly generated by the +kernel and protected by the parent master key. + +In order to avoid known-plaintext attacks, the datablob obtained through +commands 'keyctl print' or 'keyctl pipe' does not contain the overall +authentication token, which content is well known, but only the FEFEK in +encrypted form. + +The eCryptfs filesystem may really benefit from using encrypted keys in that the +required key can be securely generated by an Administrator and provided at boot +time after the unsealing of a 'trusted' key in order to perform the mount in a +controlled environment. Another advantage is that the key is not exposed to +threats of malicious software, because it is available in clear form only at +kernel level. + +Usage: + keyctl add encrypted name "new ecryptfs key-type:master-key-name keylen" ring + keyctl add encrypted name "load hex_blob" ring + keyctl update keyid "update key-type:master-key-name" + +name:= '<16 hexadecimal characters>' +key-type:= 'trusted' | 'user' +keylen:= 64 + + +Example of encrypted key usage with the eCryptfs filesystem: + +Create an encrypted key "1000100010001000" of length 64 bytes with format +'ecryptfs' and save it using a previously loaded user key "test": + + $ keyctl add encrypted 1000100010001000 "new ecryptfs user:test 64" @u + 19184530 + + $ keyctl print 19184530 + ecryptfs user:test 64 490045d4bfe48c99f0d465fbbbb79e7500da954178e2de0697 + dd85091f5450a0511219e9f7cd70dcd498038181466f78ac8d4c19504fcc72402bfc41c2 + f253a41b7507ccaa4b2b03fff19a69d1cc0b16e71746473f023a95488b6edfd86f7fdd40 + 9d292e4bacded1258880122dd553a661 + + $ keyctl pipe 19184530 > ecryptfs.blob + +Mount an eCryptfs filesystem using the created encrypted key "1000100010001000" +into the '/secret' directory: + + $ mount -i -t ecryptfs -oecryptfs_sig=1000100010001000,\ + ecryptfs_cipher=aes,ecryptfs_key_bytes=32 /secret /secret diff --git a/Documentation/security/keys-trusted-encrypted.txt b/Documentation/security/keys-trusted-encrypted.txt index 8fb79bc..c9e4855 100644 --- a/Documentation/security/keys-trusted-encrypted.txt +++ b/Documentation/security/keys-trusted-encrypted.txt @@ -53,12 +53,19 @@ they are only as secure as the user key encrypting them. The master user key should therefore be loaded in as secure a way as possible, preferably early in boot. +The decrypted portion of encrypted keys can contain either a simple symmetric +key or a more complex structure. The format of the more complex structure is +application specific, which is identified by 'format'. + Usage: - keyctl add encrypted name "new key-type:master-key-name keylen" ring - keyctl add encrypted name "load hex_blob" ring - keyctl update keyid "update key-type:master-key-name" + keyctl add encrypted name "new [format] key-type:master-key-name keylen" + ring + keyctl add encrypted name "load hex_blob" ring + keyctl update keyid "update key-type:master-key-name" + +format:= 'default | ecryptfs' +key-type:= 'trusted' | 'user' -where 'key-type' is either 'trusted' or 'user'. Examples of trusted and encrypted key usage: @@ -114,15 +121,25 @@ Reseal a trusted key under new pcr values: 7ef6a24defe4846104209bf0c3eced7fa1a672ed5b125fc9d8cd88b476a658a4434644ef df8ae9a178e9f83ba9f08d10fa47e4226b98b0702f06b3b8 -Create and save an encrypted key "evm" using the above trusted key "kmk": +The initial consumer of trusted keys is EVM, which at boot time needs a high +quality symmetric key for HMAC protection of file metadata. The use of a +trusted key provides strong guarantees that the EVM key has not been +compromised by a user level problem, and when sealed to specific boot PCR +values, protects against boot and offline attacks. Create and save an +encrypted key "evm" using the above trusted key "kmk": +option 1: omitting 'format' $ keyctl add encrypted evm "new trusted:kmk 32" @u 159771175 +option 2: explicitly defining 'format' as 'default' + $ keyctl add encrypted evm "new default trusted:kmk 32" @u + 159771175 + $ keyctl print 159771175 - trusted:kmk 32 2375725ad57798846a9bbd240de8906f006e66c03af53b1b382dbbc55 - be2a44616e4959430436dc4f2a7a9659aa60bb4652aeb2120f149ed197c564e024717c64 - 5972dcb82ab2dde83376d82b2e3c09ffc + default trusted:kmk 32 2375725ad57798846a9bbd240de8906f006e66c03af53b1b3 + 82dbbc55be2a44616e4959430436dc4f2a7a9659aa60bb4652aeb2120f149ed197c564e0 + 24717c64 5972dcb82ab2dde83376d82b2e3c09ffc $ keyctl pipe 159771175 > evm.blob @@ -132,14 +149,12 @@ Load an encrypted key "evm" from saved blob: 831684262 $ keyctl print 831684262 - trusted:kmk 32 2375725ad57798846a9bbd240de8906f006e66c03af53b1b382dbbc55 - be2a44616e4959430436dc4f2a7a9659aa60bb4652aeb2120f149ed197c564e024717c64 - 5972dcb82ab2dde83376d82b2e3c09ffc - - -The initial consumer of trusted keys is EVM, which at boot time needs a high -quality symmetric key for HMAC protection of file metadata. The use of a -trusted key provides strong guarantees that the EVM key has not been -compromised by a user level problem, and when sealed to specific boot PCR -values, protects against boot and offline attacks. Other uses for trusted and -encrypted keys, such as for disk and file encryption are anticipated. + default trusted:kmk 32 2375725ad57798846a9bbd240de8906f006e66c03af53b1b3 + 82dbbc55be2a44616e4959430436dc4f2a7a9659aa60bb4652aeb2120f149ed197c564e0 + 24717c64 5972dcb82ab2dde83376d82b2e3c09ffc + +Other uses for trusted and encrypted keys, such as for disk and file encryption +are anticipated. In particular the new format 'ecryptfs' has been defined in +in order to use encrypted keys to mount an eCryptfs filesystem. More details +about the usage can be found in the file +'Documentation/security/keys-ecryptfs.txt'. diff --git a/Documentation/serial/computone.txt b/Documentation/serial/computone.txt index c57ea47..39ddcdb 100644 --- a/Documentation/serial/computone.txt +++ b/Documentation/serial/computone.txt @@ -20,8 +20,6 @@ Version: 1.2.14 Date: 11/01/2001 Historical Author: Andrew Manison <amanison@america.net> Primary Author: Doug McNash -Support: support@computone.com -Fixes and Updates: Mike Warfield <mhw@wittsend.com> This file assumes that you are using the Computone drivers which are integrated into the kernel sources. For updating the drivers or installing @@ -87,7 +85,7 @@ c) Set address on ISA cards then: edit /usr/src/linux/drivers/char/ip2.c (Optional - may be specified on kernel command line now) d) Run "make zImage" or whatever target you prefer. -e) mv /usr/src/linux/arch/i386/boot/zImage to /boot. +e) mv /usr/src/linux/arch/x86/boot/zImage to /boot. f) Add new config for this kernel into /etc/lilo.conf, run "lilo" or copy to a floppy disk and boot from that floppy disk. g) Reboot using this kernel diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt index a493238..41c8378 100644 --- a/Documentation/serial/serial-rs485.txt +++ b/Documentation/serial/serial-rs485.txt @@ -28,6 +28,10 @@ RS485 communications. This data structure is used to set and configure RS485 parameters in the platform data and in ioctls. + The device tree can also provide RS485 boot time parameters (see [2] + for bindings). The driver is in charge of filling this data structure from + the values given by the device tree. + Any driver for devices capable of working both as RS232 and RS485 should provide at least the following ioctls: @@ -93,17 +97,28 @@ struct serial_rs485 rs485conf; - /* Set RS485 mode: */ + /* Enable RS485 mode: */ rs485conf.flags |= SER_RS485_ENABLED; + /* Set logical level for RTS pin equal to 1 when sending: */ + rs485conf.flags |= SER_RS485_RTS_ON_SEND; + /* or, set logical level for RTS pin equal to 0 when sending: */ + rs485conf.flags &= ~(SER_RS485_RTS_ON_SEND); + + /* Set logical level for RTS pin equal to 1 after sending: */ + rs485conf.flags |= SER_RS485_RTS_AFTER_SEND; + /* or, set logical level for RTS pin equal to 0 after sending: */ + rs485conf.flags &= ~(SER_RS485_RTS_AFTER_SEND); + /* Set rts delay before send, if needed: */ - rs485conf.flags |= SER_RS485_RTS_BEFORE_SEND; rs485conf.delay_rts_before_send = ...; /* Set rts delay after send, if needed: */ - rs485conf.flags |= SER_RS485_RTS_AFTER_SEND; rs485conf.delay_rts_after_send = ...; + /* Set this flag if you want to receive data even whilst sending data */ + rs485conf.flags |= SER_RS485_RX_DURING_TX; + if (ioctl (fd, TIOCSRS485, &rs485conf) < 0) { /* Error handling. See errno. */ } @@ -118,3 +133,4 @@ 5. REFERENCES [1] include/linux/serial.h + [2] Documentation/devicetree/bindings/serial/rs485.txt diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index 8975701..15806ef 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -886,6 +886,12 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. disable) power_save_controller - Reset HD-audio controller in power-saving mode (default = on) + align_buffer_size - Force rounding of buffer/period sizes to multiples + of 128 bytes. This is more efficient in terms of memory + access but isn't required by the HDA spec and prevents + users from specifying exact period/buffer sizes. + (default = on) + snoop - Enable/disable snooping (default = on) This module supports multiple cards and autoprobe. @@ -2012,8 +2018,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. ------------------- Module for sound cards based on the Asus AV66/AV100/AV200 chips, - i.e., Xonar D1, DX, D2, D2X, DS, Essence ST (Deluxe), Essence STX, - HDAV1.3 (Deluxe), and HDAV1.3 Slim. + i.e., Xonar D1, DX, D2, D2X, DS, DSX, Essence ST (Deluxe), + Essence STX (II), HDAV1.3 (Deluxe), and HDAV1.3 Slim. This module supports autoprobe and multiple cards. diff --git a/Documentation/sound/alsa/HD-Audio-Controls.txt b/Documentation/sound/alsa/HD-Audio-Controls.txt new file mode 100644 index 0000000..e9621e3 --- /dev/null +++ b/Documentation/sound/alsa/HD-Audio-Controls.txt @@ -0,0 +1,116 @@ +This file explains the codec-specific mixer controls. + +Realtek codecs +-------------- + +* Channel Mode + This is an enum control to change the surround-channel setup, + appears only when the surround channels are available. + It gives the number of channels to be used, "2ch", "4ch", "6ch", + and "8ch". According to the configuration, this also controls the + jack-retasking of multi-I/O jacks. + +* Auto-Mute Mode + This is an enum control to change the auto-mute behavior of the + headphone and line-out jacks. If built-in speakers and headphone + and/or line-out jacks are available on a machine, this controls + appears. + When there are only either headphones or line-out jacks, it gives + "Disabled" and "Enabled" state. When enabled, the speaker is muted + automatically when a jack is plugged. + + When both headphone and line-out jacks are present, it gives + "Disabled", "Speaker Only" and "Line-Out+Speaker". When + speaker-only is chosen, plugging into a headphone or a line-out jack + mutes the speakers, but not line-outs. When line-out+speaker is + selected, plugging to a headphone jack mutes both speakers and + line-outs. + + +IDT/Sigmatel codecs +------------------- + +* Analog Loopback + This control enables/disables the analog-loopback circuit. This + appears only when "loopback" is set to true in a codec hint + (see HD-Audio.txt). Note that on some codecs the analog-loopback + and the normal PCM playback are exclusive, i.e. when this is on, you + won't hear any PCM stream. + +* Swap Center/LFE + Swaps the center and LFE channel order. Normally, the left + corresponds to the center and the right to the LFE. When this is + ON, the left to the LFE and the right to the center. + +* Headphone as Line Out + When this control is ON, treat the headphone jacks as line-out + jacks. That is, the headphone won't auto-mute the other line-outs, + and no HP-amp is set to the pins. + +* Mic Jack Mode, Line Jack Mode, etc + These enum controls the direction and the bias of the input jack + pins. Depending on the jack type, it can set as "Mic In" and "Line + In", for determining the input bias, or it can be set to "Line Out" + when the pin is a multi-I/O jack for surround channels. + + +VIA codecs +---------- + +* Smart 5.1 + An enum control to re-task the multi-I/O jacks for surround outputs. + When it's ON, the corresponding input jacks (usually a line-in and a + mic-in) are switched as the surround and the CLFE output jacks. + +* Independent HP + When this enum control is enabled, the headphone output is routed + from an individual stream (the third PCM such as hw:0,2) instead of + the primary stream. In the case the headphone DAC is shared with a + side or a CLFE-channel DAC, the DAC is switched to the headphone + automatically. + +* Loopback Mixing + An enum control to determine whether the analog-loopback route is + enabled or not. When it's enabled, the analog-loopback is mixed to + the front-channel. Also, the same route is used for the headphone + and speaker outputs. As a side-effect, when this mode is set, the + individual volume controls will be no longer available for + headphones and speakers because there is only one DAC connected to a + mixer widget. + +* Dynamic Power-Control + This control determines whether the dynamic power-control per jack + detection is enabled or not. When enabled, the widgets power state + (D0/D3) are changed dynamically depending on the jack plugging + state for saving power consumptions. However, if your system + doesn't provide a proper jack-detection, this won't work; in such a + case, turn this control OFF. + +* Jack Detect + This control is provided only for VT1708 codec which gives no proper + unsolicited event per jack plug. When this is on, the driver polls + the jack detection so that the headphone auto-mute can work, while + turning this off would reduce the power consumption. + + +Conexant codecs +--------------- + +* Auto-Mute Mode + See Reatek codecs. + + +Analog codecs +-------------- + +* Channel Mode + This is an enum control to change the surround-channel setup, + appears only when the surround channels are available. + It gives the number of channels to be used, "2ch", "4ch" and "6ch". + According to the configuration, this also controls the + jack-retasking of multi-I/O jacks. + +* Independent HP + When this enum control is enabled, the headphone output is routed + from an individual stream (the third PCM such as hw:0,2) instead of + the primary stream. diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt index d70c93b..69820b2 100644 --- a/Documentation/sound/alsa/HD-Audio-Models.txt +++ b/Documentation/sound/alsa/HD-Audio-Models.txt @@ -29,9 +29,6 @@ ALC880 ALC260 ====== - hp HP machines - hp-3013 HP machines (3013-variant) - hp-dc7600 HP DC7600 fujitsu Fujitsu S7020 acer Acer TravelMate will Will laptops (PB V7900) @@ -46,15 +43,10 @@ ALC260 ALC262 ====== fujitsu Fujitsu Laptop - hp-bpc HP xw4400/6400/8400/9400 laptops - hp-bpc-d7000 HP BPC D7000 - hp-tc-t5735 HP Thin Client T5735 - hp-rp5700 HP RP5700 benq Benq ED8 benq-t31 Benq T31 hippo Hippo (ATI) with jack detection, Sony UX-90s hippo_1 Hippo (Benq) with jack detection - sony-assamd Sony ASSAMD toshiba-s06 Toshiba S06 toshiba-rx1 Toshiba RX1 tyan Tyan Thunder n6650W (S2915-E) @@ -66,43 +58,16 @@ ALC262 ALC267/268 ========== - quanta-il1 Quanta IL1 mini-notebook - 3stack 3-stack model - toshiba Toshiba A205 - acer Acer laptops - acer-dmic Acer laptops with digital-mic - acer-aspire Acer Aspire One - dell Dell OEM laptops (Vostro 1200) - zepto Zepto laptops - test for testing/debugging purpose, almost all controls can - adjusted. Appearing only when compiled with - $CONFIG_SND_DEBUG=y - auto auto-config reading BIOS (default) + N/A -ALC269 +ALC269/270/275/276/280/282 ====== - basic Basic preset - quanta Quanta FL1 laptop-amic Laptops with analog-mic input laptop-dmic Laptops with digital-mic input - fujitsu FSC Amilo - lifebook Fujitsu Lifebook S6420 - auto auto-config reading BIOS (default) + lenovo-dock Enables docking station I/O for some Lenovos ALC662/663/272 ============== - 3stack-dig 3-stack (2-channel) with SPDIF - 3stack-6ch 3-stack (6-channel) - 3stack-6ch-dig 3-stack (6-channel) with SPDIF - 5stack-dig 5-stack with SPDIF - lenovo-101e Lenovo laptop - eeepc-p701 ASUS Eeepc P701 - eeepc-ep20 ASUS Eeepc EP20 - ecs ECS/Foxconn mobo - m51va ASUS M51VA - g71v ASUS G71V - h13 ASUS H13 - g50v ASUS G50V asus-mode1 ASUS asus-mode2 ASUS asus-mode3 ASUS @@ -111,15 +76,10 @@ ALC662/663/272 asus-mode6 ASUS asus-mode7 ASUS asus-mode8 ASUS - dell Dell with ALC272 - dell-zm1 Dell ZM1 with ALC272 - samsung-nc10 Samsung NC10 mini notebook - auto auto-config reading BIOS (default) ALC680 ====== - base Base model (ASUS NX90) - auto auto-config reading BIOS (default) + N/A ALC882/883/885/888/889 ====================== @@ -175,28 +135,11 @@ ALC882/883/885/888/889 ALC861/660 ========== - 3stack 3-jack - 3stack-dig 3-jack with SPDIF I/O - 6stack-dig 6-jack with SPDIF I/O - 3stack-660 3-jack (for ALC660) - uniwill-m31 Uniwill M31 laptop - toshiba Toshiba laptop support - asus Asus laptop support - asus-laptop ASUS F2/F3 laptops - auto auto-config reading BIOS (default) + N/A ALC861VD/660VD ============== - 3stack 3-jack - 3stack-dig 3-jack with SPDIF OUT - 6stack-dig 6-jack with SPDIF OUT - 3stack-660 3-jack (for ALC660VD) - 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD) - lenovo Lenovo 3000 C200 - dallas Dallas laptops - hp HP TX1000 - asus-v1s ASUS V1Sn - auto auto-config reading BIOS (default) + N/A CMI9880 ======= @@ -289,7 +232,6 @@ Conexant 5051 hp-dv6736 HP dv6736 hp-f700 HP Compaq Presario F700 ideapad Lenovo IdeaPad laptop - lenovo-x200 Lenovo X200 laptop toshiba Toshiba Satellite M300 Conexant 5066 @@ -408,6 +350,7 @@ STAC92HD83* ref Reference board mic-ref Reference board with power management for ports dell-s14 Dell laptop + dell-vostro-3500 Dell Vostro 3500 laptop hp HP laptops with (inverted) mute-LED hp-dv7-4000 HP dv-7 4000 auto BIOS setup (default) diff --git a/Documentation/sound/alsa/HD-Audio.txt b/Documentation/sound/alsa/HD-Audio.txt index c82beb0..91fee3b 100644 --- a/Documentation/sound/alsa/HD-Audio.txt +++ b/Documentation/sound/alsa/HD-Audio.txt @@ -447,7 +447,10 @@ The file needs to have a line `[codec]`. The next line should contain three numbers indicating the codec vendor-id (0x12345678 in the example), the codec subsystem-id (0xabcd1234) and the address (2) of the codec. The rest patch entries are applied to this specified codec -until another codec entry is given. +until another codec entry is given. Passing 0 or a negative number to +the first or the second value will make the check of the corresponding +field be skipped. It'll be useful for really broken devices that don't +initialize SSID properly. The `[model]` line allows to change the model name of the each codec. In the example above, it will be changed to model=auto. @@ -491,7 +494,7 @@ Also, the codec chip name can be rewritten via `[chip_name]` line. The hd-audio driver reads the file via request_firmware(). Thus, a patch file has to be located on the appropriate firmware path, typically, /lib/firmware. For example, when you pass the option -`patch=hda-init.fw`, the file /lib/firmware/hda-init-fw must be +`patch=hda-init.fw`, the file /lib/firmware/hda-init.fw must be present. The patch module option is specific to each card instance, and you @@ -524,11 +527,59 @@ power-saving. See /sys/module/snd_hda_intel/parameters/power_save to check the current value. If it's non-zero, the feature is turned on. +Tracepoints +~~~~~~~~~~~ +The hd-audio driver gives a few basic tracepoints. +`hda:hda_send_cmd` traces each CORB write while `hda:hda_get_response` +traces the response from RIRB (only when read from the codec driver). +`hda:hda_bus_reset` traces the bus-reset due to fatal error, etc, +`hda:hda_unsol_event` traces the unsolicited events, and +`hda:hda_power_down` and `hda:hda_power_up` trace the power down/up +via power-saving behavior. + +Enabling all tracepoints can be done like +------------------------------------------------------------------------ + # echo 1 > /sys/kernel/debug/tracing/events/hda/enable +------------------------------------------------------------------------ +then after some commands, you can traces from +/sys/kernel/debug/tracing/trace file. For example, when you want to +trace what codec command is sent, enable the tracepoint like: +------------------------------------------------------------------------ + # cat /sys/kernel/debug/tracing/trace + # tracer: nop + # + # TASK-PID CPU# TIMESTAMP FUNCTION + # | | | | | + <...>-7807 [002] 105147.774889: hda_send_cmd: [0:0] val=e3a019 + <...>-7807 [002] 105147.774893: hda_send_cmd: [0:0] val=e39019 + <...>-7807 [002] 105147.999542: hda_send_cmd: [0:0] val=e3a01a + <...>-7807 [002] 105147.999543: hda_send_cmd: [0:0] val=e3901a + <...>-26764 [001] 349222.837143: hda_send_cmd: [0:0] val=e3a019 + <...>-26764 [001] 349222.837148: hda_send_cmd: [0:0] val=e39019 + <...>-26764 [001] 349223.058539: hda_send_cmd: [0:0] val=e3a01a + <...>-26764 [001] 349223.058541: hda_send_cmd: [0:0] val=e3901a +------------------------------------------------------------------------ +Here `[0:0]` indicates the card number and the codec address, and +`val` shows the value sent to the codec, respectively. The value is +a packed value, and you can decode it via hda-decode-verb program +included in hda-emu package below. For example, the value e3a019 is +to set the left output-amp value to 25. +------------------------------------------------------------------------ + % hda-decode-verb 0xe3a019 + raw value = 0x00e3a019 + cid = 0, nid = 0x0e, verb = 0x3a0, parm = 0x19 + raw value: verb = 0x3a0, parm = 0x19 + verbname = set_amp_gain_mute + amp raw val = 0xa019 + output, left, idx=0, mute=0, val=25 +------------------------------------------------------------------------ + + Development Tree ~~~~~~~~~~~~~~~~ The latest development codes for HD-audio are found on sound git tree: -- git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git +- git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git The master branch or for-next branches can be used as the main development branches in general while the HD-audio specific patches @@ -543,7 +594,7 @@ is, installed via the usual spells: configure, make and make install(-modules). See INSTALL in the package. The snapshot tarballs are found at: -- ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/ +- ftp://ftp.suse.com/pub/people/tiwai/snapshot/ Sending a Bug Report @@ -645,7 +696,7 @@ via hda-verb won't change the mixer value. The hda-verb program is found in the ftp directory: -- ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/misc/ +- ftp://ftp.suse.com/pub/people/tiwai/misc/ Also a git repository is available: @@ -713,7 +764,7 @@ operation, the jack plugging simulation, etc. The package is found in: -- ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/misc/ +- ftp://ftp.suse.com/pub/people/tiwai/misc/ A git repository is available: diff --git a/Documentation/sound/alsa/soc/machine.txt b/Documentation/sound/alsa/soc/machine.txt index 3e2ec9c..d50c14d 100644 --- a/Documentation/sound/alsa/soc/machine.txt +++ b/Documentation/sound/alsa/soc/machine.txt @@ -50,8 +50,7 @@ Machine DAI Configuration The machine DAI configuration glues all the codec and CPU DAIs together. It can also be used to set up the DAI system clock and for any machine related DAI initialisation e.g. the machine audio map can be connected to the codec audio -map, unconnected codec pins can be set as such. Please see corgi.c, spitz.c -for examples. +map, unconnected codec pins can be set as such. struct snd_soc_dai_link is used to set up each DAI in your machine. e.g. @@ -83,8 +82,7 @@ Machine Power Map The machine driver can optionally extend the codec power map and to become an audio power map of the audio subsystem. This allows for automatic power up/down of speaker/HP amplifiers, etc. Codec pins can be connected to the machines jack -sockets in the machine init function. See soc/pxa/spitz.c and dapm.txt for -details. +sockets in the machine init function. Machine Controls diff --git a/Documentation/sound/oss/PAS16 b/Documentation/sound/oss/PAS16 index 951b3dc..3dca4b7 100644 --- a/Documentation/sound/oss/PAS16 +++ b/Documentation/sound/oss/PAS16 @@ -60,8 +60,7 @@ With PAS16 you can use two audio device files at the same time. /dev/dsp (and The new stuff for 2.3.99 and later ============================================================================ -The following configuration options from Documentation/Configure.help -are relevant to configuring the PAS16: +The following configuration options are relevant to configuring the PAS16: Sound card support CONFIG_SOUND diff --git a/Documentation/spi/ep93xx_spi b/Documentation/spi/ep93xx_spi index 6325f5b..d8eb01c 100644 --- a/Documentation/spi/ep93xx_spi +++ b/Documentation/spi/ep93xx_spi @@ -88,6 +88,16 @@ static void __init ts72xx_init_machine(void) ARRAY_SIZE(ts72xx_spi_devices)); } +The driver can use DMA for the transfers also. In this case ts72xx_spi_info +becomes: + +static struct ep93xx_spi_info ts72xx_spi_info = { + .num_chipselect = ARRAY_SIZE(ts72xx_spi_devices), + .use_dma = true; +}; + +Note that CONFIG_EP93XX_DMA should be enabled as well. + Thanks to ========= Martin Guy, H. Hartley Sweeten and others who helped me during development of diff --git a/Documentation/spi/pxa2xx b/Documentation/spi/pxa2xx index 493dada..3352f97 100644 --- a/Documentation/spi/pxa2xx +++ b/Documentation/spi/pxa2xx @@ -2,7 +2,7 @@ PXA2xx SPI on SSP driver HOWTO =================================================== This a mini howto on the pxa2xx_spi driver. The driver turns a PXA2xx synchronous serial port into a SPI master controller -(see Documentation/spi/spi_summary). The driver has the following features +(see Documentation/spi/spi-summary). The driver has the following features - Support for any PXA2xx SSP - SSP PIO and SSP DMA data transfers. @@ -22,15 +22,11 @@ Typically a SPI master is defined in the arch/.../mach-*/board-*.c as a found in include/linux/spi/pxa2xx_spi.h: struct pxa2xx_spi_master { - enum pxa_ssp_type ssp_type; u32 clock_enable; u16 num_chipselect; u8 enable_dma; }; -The "pxa2xx_spi_master.ssp_type" field must have a value between 1 and 3 and -informs the driver which features a particular SSP supports. - The "pxa2xx_spi_master.clock_enable" field is used to enable/disable the corresponding SSP peripheral block in the "Clock Enable Register (CKEN"). See the "PXA2xx Developer Manual" section "Clocks and Power Management". @@ -61,7 +57,6 @@ static struct resource pxa_spi_nssp_resources[] = { }; static struct pxa2xx_spi_master pxa_nssp_master_info = { - .ssp_type = PXA25x_NSSP, /* Type of SSP */ .clock_enable = CKEN_NSSP, /* NSSP Peripheral clock */ .num_chipselect = 1, /* Matches the number of chips attached to NSSP */ .enable_dma = 1, /* Enables NSSP DMA */ @@ -90,7 +85,7 @@ Declaring Slave Devices ----------------------- Typically each SPI slave (chip) is defined in the arch/.../mach-*/board-*.c using the "spi_board_info" structure found in "linux/spi/spi.h". See -"Documentation/spi/spi_summary" for additional information. +"Documentation/spi/spi-summary" for additional information. Each slave device attached to the PXA must provide slave specific configuration information via the structure "pxa2xx_spi_chip" found in diff --git a/Documentation/stable_kernel_rules.txt b/Documentation/stable_kernel_rules.txt index 22bf11b..53feeac 100644 --- a/Documentation/stable_kernel_rules.txt +++ b/Documentation/stable_kernel_rules.txt @@ -29,6 +29,9 @@ Rules on what kind of patches are accepted, and which ones are not, into the Procedure for submitting patches to the -stable tree: + - If the patch covers files in net/ or drivers/net please follow netdev stable + submission guidelines as described in + Documentation/networking/netdev-FAQ.txt - Send the patch, after verifying that it follows the above rules, to stable@vger.kernel.org. You must note the upstream commit ID in the changelog of your submission. diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 5e7cb39..2a68089 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -17,23 +17,22 @@ before actually making adjustments. Currently, these files might (depending on your configuration) show up in /proc/sys/kernel: -- acpi_video_flags + - acct +- acpi_video_flags +- auto_msgmni - bootloader_type [ X86 only ] - bootloader_version [ X86 only ] - callhome [ S390 only ] -- auto_msgmni +- cap_last_cap - core_pattern - core_pipe_limit - core_uses_pid - ctrl-alt-del -- dentry-state - dmesg_restrict - domainname - hostname - hotplug -- java-appletviewer [ binfmt_java, obsolete ] -- java-interpreter [ binfmt_java, obsolete ] - kptr_restrict - kstack_depth_to_print [ X86 only ] - l2cr [ PPC only ] @@ -48,10 +47,14 @@ show up in /proc/sys/kernel: - overflowgid - overflowuid - panic +- panic_on_oops +- panic_on_unrecovered_nmi - pid_max - powersave-nap [ PPC only ] -- panic_on_unrecovered_nmi - printk +- printk_delay +- printk_ratelimit +- printk_ratelimit_burst - randomize_va_space - real-root-dev ==> Documentation/initrd.txt - reboot-cmd [ SPARC only ] @@ -59,9 +62,11 @@ show up in /proc/sys/kernel: - rtsig-nr - sem - sg-big-buff [ generic SCSI device (sg) ] +- shm_rmid_forced - shmall - shmmax [ sysv ipc ] - shmmni +- softlockup_thresh - stop-a [ SPARC only ] - sysrq ==> Documentation/sysrq.txt - tainted @@ -71,15 +76,6 @@ show up in /proc/sys/kernel: ============================================================== -acpi_video_flags: - -flags - -See Doc*/kernel/power/video.txt, it allows mode of video boot to be -set during run time. - -============================================================== - acct: highwater lowwater frequency @@ -97,6 +93,25 @@ valid for 30 seconds. ============================================================== +acpi_video_flags: + +flags + +See Doc*/kernel/power/video.txt, it allows mode of video boot to be +set during run time. + +============================================================== + +auto_msgmni: + +Enables/Disables automatic recomputing of msgmni upon memory add/remove +or upon ipc namespace creation/removal (see the msgmni description +above). Echoing "1" into this file enables msgmni automatic recomputing. +Echoing "0" turns it off. auto_msgmni default value is 1. + + +============================================================== + bootloader_type: x86 bootloader identification @@ -141,6 +156,13 @@ on has a service contract with IBM. ============================================================== +cap_last_cap + +Highest valid capability of the running kernel. Exports +CAP_LAST_CAP from the kernel. + +============================================================== + core_pattern: core_pattern is used to specify a core dumpfile pattern name. @@ -172,22 +194,24 @@ core_pattern is used to specify a core dumpfile pattern name. core_pipe_limit: -This sysctl is only applicable when core_pattern is configured to pipe core -files to a user space helper (when the first character of core_pattern is a '|', -see above). When collecting cores via a pipe to an application, it is -occasionally useful for the collecting application to gather data about the -crashing process from its /proc/pid directory. In order to do this safely, the -kernel must wait for the collecting process to exit, so as not to remove the -crashing processes proc files prematurely. This in turn creates the possibility -that a misbehaving userspace collecting process can block the reaping of a -crashed process simply by never exiting. This sysctl defends against that. It -defines how many concurrent crashing processes may be piped to user space -applications in parallel. If this value is exceeded, then those crashing -processes above that value are noted via the kernel log and their cores are -skipped. 0 is a special value, indicating that unlimited processes may be -captured in parallel, but that no waiting will take place (i.e. the collecting -process is not guaranteed access to /proc/<crashing pid>/). This value defaults -to 0. +This sysctl is only applicable when core_pattern is configured to pipe +core files to a user space helper (when the first character of +core_pattern is a '|', see above). When collecting cores via a pipe +to an application, it is occasionally useful for the collecting +application to gather data about the crashing process from its +/proc/pid directory. In order to do this safely, the kernel must wait +for the collecting process to exit, so as not to remove the crashing +processes proc files prematurely. This in turn creates the +possibility that a misbehaving userspace collecting process can block +the reaping of a crashed process simply by never exiting. This sysctl +defends against that. It defines how many concurrent crashing +processes may be piped to user space applications in parallel. If +this value is exceeded, then those crashing processes above that value +are noted via the kernel log and their cores are skipped. 0 is a +special value, indicating that unlimited processes may be captured in +parallel, but that no waiting will take place (i.e. the collecting +process is not guaranteed access to /proc/<crashing pid>/). This +value defaults to 0. ============================================================== @@ -218,14 +242,14 @@ to decide what to do with it. dmesg_restrict: -This toggle indicates whether unprivileged users are prevented from using -dmesg(8) to view messages from the kernel's log buffer. When -dmesg_restrict is set to (0) there are no restrictions. When +This toggle indicates whether unprivileged users are prevented +from using dmesg(8) to view messages from the kernel's log buffer. +When dmesg_restrict is set to (0) there are no restrictions. When dmesg_restrict is set set to (1), users must have CAP_SYSLOG to use dmesg(8). -The kernel config option CONFIG_SECURITY_DMESG_RESTRICT sets the default -value of dmesg_restrict. +The kernel config option CONFIG_SECURITY_DMESG_RESTRICT sets the +default value of dmesg_restrict. ============================================================== @@ -256,23 +280,27 @@ Default value is "/sbin/hotplug". ============================================================== -l2cr: (PPC only) +kptr_restrict: -This flag controls the L2 cache of G3 processor boards. If -0, the cache is disabled. Enabled if nonzero. +This toggle indicates whether restrictions are placed on +exposing kernel addresses via /proc and other interfaces. -============================================================== +When kptr_restrict is set to (0), the default, there are no restrictions. -kptr_restrict: +When kptr_restrict is set to (1), kernel pointers printed using the %pK +format specifier will be replaced with 0's unless the user has CAP_SYSLOG +and effective user and group ids are equal to the real ids. This is +because %pK checks are done at read() time rather than open() time, so +if permissions are elevated between the open() and the read() (e.g via +a setuid binary) then %pK will not leak kernel pointers to unprivileged +users. Note, this is a temporary solution only. The correct long-term +solution is to do the permission checks at open() time. Consider removing +world read permissions from files that use %pK, and using dmesg_restrict +to protect against uses of %pK in dmesg(8) if leaking kernel pointer +values to unprivileged users is a concern. -This toggle indicates whether restrictions are placed on -exposing kernel addresses via /proc and other interfaces. When -kptr_restrict is set to (0), there are no restrictions. When -kptr_restrict is set to (1), the default, kernel pointers -printed using the %pK format specifier will be replaced with 0's -unless the user has CAP_SYSLOG. When kptr_restrict is set to -(2), kernel pointers printed using %pK will be replaced with 0's -regardless of privileges. +When kptr_restrict is set to (2), kernel pointers printed using +%pK will be replaced with 0's regardless of privileges. ============================================================== @@ -283,6 +311,13 @@ kernel stack. ============================================================== +l2cr: (PPC only) + +This flag controls the L2 cache of G3 processor boards. If +0, the cache is disabled. Enabled if nonzero. + +============================================================== + modules_disabled: A toggle value indicating if modules are allowed to be loaded @@ -293,6 +328,21 @@ to false. ============================================================== +nmi_watchdog: + +Enables/Disables the NMI watchdog on x86 systems. When the value is +non-zero the NMI watchdog is enabled and will continuously test all +online cpus to determine whether or not they are still functioning +properly. Currently, passing "nmi_watchdog=" parameter at boot time is +required for this function to work. + +If LAPIC NMI watchdog method is in use (nmi_watchdog=2 kernel +parameter), the NMI watchdog shares registers with oprofile. By +disabling the NMI watchdog, oprofile may have more registers to +utilize. + +============================================================== + osrelease, ostype & version: # cat osrelease @@ -312,10 +362,10 @@ The only way to tune these values is to rebuild the kernel :-) overflowgid & overflowuid: -if your architecture did not always support 32-bit UIDs (i.e. arm, i386, -m68k, sh, and sparc32), a fixed UID and GID will be returned to -applications that use the old 16-bit UID/GID system calls, if the actual -UID or GID would exceed 65535. +if your architecture did not always support 32-bit UIDs (i.e. arm, +i386, m68k, sh, and sparc32), a fixed UID and GID will be returned to +applications that use the old 16-bit UID/GID system calls, if the +actual UID or GID would exceed 65535. These sysctls allow you to change the value of the fixed UID and GID. The default is 65534. @@ -324,9 +374,22 @@ The default is 65534. panic: -The value in this file represents the number of seconds the -kernel waits before rebooting on a panic. When you use the -software watchdog, the recommended setting is 60. +The value in this file represents the number of seconds the kernel +waits before rebooting on a panic. When you use the software watchdog, +the recommended setting is 60. + +============================================================== + +panic_on_unrecovered_nmi: + +The default Linux behaviour on an NMI of either memory or unknown is +to continue operation. For many environments such as scientific +computing it is preferable that the box is taken out and the error +dealt with than an uncorrected parity/ECC error get propagated. + +A small number of systems do generate NMI's for bizarre random reasons +such as power management so the default is off. That sysctl works like +the existing panic controls already in that directory. ============================================================== @@ -376,6 +439,14 @@ the different loglevels. ============================================================== +printk_delay: + +Delay each printk message in printk_delay milliseconds + +Value from 0 - 10000 is allowed. + +============================================================== + printk_ratelimit: Some warning messages are rate limited. printk_ratelimit specifies @@ -395,15 +466,7 @@ send before ratelimiting kicks in. ============================================================== -printk_delay: - -Delay each printk message in printk_delay milliseconds - -Value from 0 - 10000 is allowed. - -============================================================== - -randomize-va-space: +randomize_va_space: This option can be used to select the type of process address space randomization that is used in the system, for architectures @@ -466,15 +529,36 @@ are doing anyway :) ============================================================== -shmmax: +shmmax: This value can be used to query and set the run time limit on the maximum shared memory segment size that can be created. -Shared memory segments up to 1Gb are now supported in the +Shared memory segments up to 1Gb are now supported in the kernel. This value defaults to SHMMAX. ============================================================== +shm_rmid_forced: + +Linux lets you set resource limits, including how much memory one +process can consume, via setrlimit(2). Unfortunately, shared memory +segments are allowed to exist without association with any process, and +thus might not be counted against any resource limits. If enabled, +shared memory segments are automatically destroyed when their attach +count becomes zero after a detach or a process termination. It will +also destroy segments that were created, but never attached to, on exit +from the process. The only use left for IPC_RMID is to immediately +destroy an unattached segment. Of course, this breaks the way things are +defined, so some applications might stop working. Note that this +feature will do you no good unless you also configure your resource +limits (in particular, RLIMIT_AS and RLIMIT_NPROC). Most systems don't +need this. + +Note that if you change this from 0 to 1, already created segments +without users and with a dead originative process will be destroyed. + +============================================================== + softlockup_thresh: This value can be used to lower the softlockup tolerance threshold. The @@ -484,7 +568,7 @@ tunable to zero will disable the softlockup detection altogether. ============================================================== -tainted: +tainted: Non-zero if the kernel has been tainted. Numeric values, which can be ORed together: @@ -509,49 +593,11 @@ can be ORed together: ============================================================== -auto_msgmni: - -Enables/Disables automatic recomputing of msgmni upon memory add/remove or -upon ipc namespace creation/removal (see the msgmni description above). -Echoing "1" into this file enables msgmni automatic recomputing. -Echoing "0" turns it off. -auto_msgmni default value is 1. - -============================================================== - -nmi_watchdog: - -Enables/Disables the NMI watchdog on x86 systems. When the value is non-zero -the NMI watchdog is enabled and will continuously test all online cpus to -determine whether or not they are still functioning properly. Currently, -passing "nmi_watchdog=" parameter at boot time is required for this function -to work. - -If LAPIC NMI watchdog method is in use (nmi_watchdog=2 kernel parameter), the -NMI watchdog shares registers with oprofile. By disabling the NMI watchdog, -oprofile may have more registers to utilize. - -============================================================== - unknown_nmi_panic: -The value in this file affects behavior of handling NMI. When the value is -non-zero, unknown NMI is trapped and then panic occurs. At that time, kernel -debugging information is displayed on console. - -NMI switch that most IA32 servers have fires unknown NMI up, for example. -If a system hangs up, try pressing the NMI switch. - -============================================================== - -panic_on_unrecovered_nmi: - -The default Linux behaviour on an NMI of either memory or unknown is to continue -operation. For many environments such as scientific computing it is preferable -that the box is taken out and the error dealt with than an uncorrected -parity/ECC error get propogated. - -A small number of systems do generate NMI's for bizarre random reasons such as -power management so the default is off. That sysctl works like the existing -panic controls already in that directory. +The value in this file affects behavior of handling NMI. When the +value is non-zero, unknown NMI is trapped and then panic occurs. At +that time, kernel debugging information is displayed on console. +NMI switch that most IA32 servers have fires unknown NMI up, for +example. If a system hangs up, try pressing the NMI switch. diff --git a/Documentation/timers/highres.txt b/Documentation/timers/highres.txt index 2133223..e878997 100644 --- a/Documentation/timers/highres.txt +++ b/Documentation/timers/highres.txt @@ -30,7 +30,7 @@ hrtimer base infrastructure --------------------------- The hrtimer base infrastructure was merged into the 2.6.16 kernel. Details of -the base implementation are covered in Documentation/hrtimers/hrtimer.txt. See +the base implementation are covered in Documentation/timers/hrtimers.txt. See also figure #2 (OLS slides p. 15) The main differences to the timer wheel, which holds the armed timer_list type diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt index c83bd6b..d0d0bb9 100644 --- a/Documentation/trace/kprobetrace.txt +++ b/Documentation/trace/kprobetrace.txt @@ -22,14 +22,15 @@ current_tracer. Instead of that, add probe points via Synopsis of kprobe_events ------------------------- - p[:[GRP/]EVENT] SYMBOL[+offs]|MEMADDR [FETCHARGS] : Set a probe - r[:[GRP/]EVENT] SYMBOL[+0] [FETCHARGS] : Set a return probe + p[:[GRP/]EVENT] [MOD:]SYM[+offs]|MEMADDR [FETCHARGS] : Set a probe + r[:[GRP/]EVENT] [MOD:]SYM[+0] [FETCHARGS] : Set a return probe -:[GRP/]EVENT : Clear a probe GRP : Group name. If omitted, use "kprobes" for it. EVENT : Event name. If omitted, the event name is generated - based on SYMBOL+offs or MEMADDR. - SYMBOL[+offs] : Symbol+offset where the probe is inserted. + based on SYM+offs or MEMADDR. + MOD : Module name which has given SYM. + SYM[+offs] : Symbol+offset where the probe is inserted. MEMADDR : Address where the probe is inserted. FETCHARGS : Arguments. Each probe can have up to 128 args. diff --git a/Documentation/usb/dma.txt b/Documentation/usb/dma.txt index 84ef865..444651e 100644 --- a/Documentation/usb/dma.txt +++ b/Documentation/usb/dma.txt @@ -7,7 +7,7 @@ API OVERVIEW The big picture is that USB drivers can continue to ignore most DMA issues, though they still must provide DMA-ready buffers (see -Documentation/PCI/PCI-DMA-mapping.txt). That's how they've worked through +Documentation/DMA-API-HOWTO.txt). That's how they've worked through the 2.4 (and earlier) kernels. OR: they can now be DMA-aware. @@ -57,7 +57,7 @@ and effects like cache-trashing can impose subtle penalties. force a consistent memory access ordering by using memory barriers. It's not using a streaming DMA mapping, so it's good for small transfers on systems where the I/O would otherwise thrash an IOMMU mapping. (See - Documentation/PCI/PCI-DMA-mapping.txt for definitions of "coherent" and + Documentation/DMA-API-HOWTO.txt for definitions of "coherent" and "streaming" DMA mappings.) Asking for 1/Nth of a page (as well as asking for N pages) is reasonably @@ -88,7 +88,7 @@ WORKING WITH EXISTING BUFFERS Existing buffers aren't usable for DMA without first being mapped into the DMA address space of the device. However, most buffers passed to your driver can safely be used with such DMA mapping. (See the first section -of Documentation/PCI/PCI-DMA-mapping.txt, titled "What memory is DMA-able?") +of Documentation/DMA-API-HOWTO.txt, titled "What memory is DMA-able?") - When you're using scatterlists, you can map everything at once. On some systems, this kicks in an IOMMU and turns the scatterlists into single diff --git a/Documentation/usb/dwc3.txt b/Documentation/usb/dwc3.txt new file mode 100644 index 0000000..7b590ed --- /dev/null +++ b/Documentation/usb/dwc3.txt @@ -0,0 +1,45 @@ + + TODO +~~~~~~ +Please pick something while reading :) + +- Convert interrupt handler to per-ep-thread-irq + + As it turns out some DWC3-commands ~1ms to complete. Currently we spin + until the command completes which is bad. + + Implementation idea: + - dwc core implements a demultiplexing irq chip for interrupts per + endpoint. The interrupt numbers are allocated during probe and belong + to the device. If MSI provides per-endpoint interrupt this dummy + interrupt chip can be replaced with "real" interrupts. + - interrupts are requested / allocated on usb_ep_enable() and removed on + usb_ep_disable(). Worst case are 32 interrupts, the lower limit is two + for ep0/1. + - dwc3_send_gadget_ep_cmd() will sleep in wait_for_completion_timeout() + until the command completes. + - the interrupt handler is split into the following pieces: + - primary handler of the device + goes through every event and calls generic_handle_irq() for event + it. On return from generic_handle_irq() in acknowledges the event + counter so interrupt goes away (eventually). + + - threaded handler of the device + none + + - primary handler of the EP-interrupt + reads the event and tries to process it. Everything that requries + sleeping is handed over to the Thread. The event is saved in an + per-endpoint data-structure. + We probably have to pay attention not to process events once we + handed something to thread so we don't process event X prio Y + where X > Y. + + - threaded handler of the EP-interrupt + handles the remaining EP work which might sleep such as waiting + for command completion. + + Latency: + There should be no increase in latency since the interrupt-thread has a + high priority and will be run before an average task in user land + (except the user changed priorities). diff --git a/Documentation/usb/ehci.txt b/Documentation/usb/ehci.txt index 9dcafa7..160bd6c 100644 --- a/Documentation/usb/ehci.txt +++ b/Documentation/usb/ehci.txt @@ -210,3 +210,5 @@ TBD: Interrupt and ISO transfer performance issues. Those periodic transfers are fully scheduled, so the main issue is likely to be how to trigger "high bandwidth" modes. +TBD: More than standard 80% periodic bandwidth allocation is possible +through sysfs uframe_periodic_max parameter. Describe that. diff --git a/Documentation/usb/gadget_hid.txt b/Documentation/usb/gadget_hid.txt index f4a51f5..12696c2 100644 --- a/Documentation/usb/gadget_hid.txt +++ b/Documentation/usb/gadget_hid.txt @@ -81,8 +81,8 @@ Send and receive HID reports to do this. hid_gadget_test is a small interactive program to test the HID - gadget driver. To use, point it at a hidg device and set the - device type (keyboard / mouse / joystick) - E.G.: + gadget driver. To use, point it at a hidg device and set the + device type (keyboard / mouse / joystick) - E.G.: # hid_gadget_test /dev/hidg0 keyboard @@ -97,7 +97,7 @@ Send and receive HID reports HID gadget. Another interesting example is the caps lock test. Type - -–caps-lock and hit return. A report is then sent by the + --caps-lock and hit return. A report is then sent by the gadget and you should receive the host answer, corresponding to the caps lock LED status. diff --git a/Documentation/usb/linux-cdc-acm.inf b/Documentation/usb/linux-cdc-acm.inf index 37a02ce..f0ffc27 100644 --- a/Documentation/usb/linux-cdc-acm.inf +++ b/Documentation/usb/linux-cdc-acm.inf @@ -90,10 +90,10 @@ ServiceBinary=%12%\USBSER.sys [SourceDisksFiles] [SourceDisksNames] [DeviceList] -%DESCRIPTION%=DriverInstall, USB\VID_0525&PID_A4A7, USB\VID_1D6B&PID_0104&MI_02 +%DESCRIPTION%=DriverInstall, USB\VID_0525&PID_A4A7, USB\VID_1D6B&PID_0104&MI_02, USB\VID_1D6B&PID_0106&MI_00 [DeviceList.NTamd64] -%DESCRIPTION%=DriverInstall, USB\VID_0525&PID_A4A7, USB\VID_1D6B&PID_0104&MI_02 +%DESCRIPTION%=DriverInstall, USB\VID_0525&PID_A4A7, USB\VID_1D6B&PID_0104&MI_02, USB\VID_1D6B&PID_0106&MI_00 ;------------------------------------------------------------------------------ diff --git a/Documentation/usb/power-management.txt b/Documentation/usb/power-management.txt index c9ffa9c..12511c9 100644 --- a/Documentation/usb/power-management.txt +++ b/Documentation/usb/power-management.txt @@ -439,10 +439,10 @@ cause autosuspends to fail with -EBUSY if the driver needs to use the device. External suspend calls should never be allowed to fail in this way, -only autosuspend calls. The driver can tell them apart by checking -the PM_EVENT_AUTO bit in the message.event argument to the suspend -method; this bit will be set for internal PM events (autosuspend) and -clear for external PM events. +only autosuspend calls. The driver can tell them apart by applying +the PMSG_IS_AUTO() macro to the message argument to the suspend +method; it will return True for internal PM events (autosuspend) and +False for external PM events. Mutual exclusion @@ -487,3 +487,29 @@ succeed, it may still remain active and thus cause the system to resume as soon as the system suspend is complete. Or the remote wakeup may fail and get lost. Which outcome occurs depends on timing and on the hardware and firmware design. + + + xHCI hardware link PM + --------------------- + +xHCI host controller provides hardware link power management to usb2.0 +(xHCI 1.0 feature) and usb3.0 devices which support link PM. By +enabling hardware LPM, the host can automatically put the device into +lower power state(L1 for usb2.0 devices, or U1/U2 for usb3.0 devices), +which state device can enter and resume very quickly. + +The user interface for controlling USB2 hardware LPM is located in the +power/ subdirectory of each USB device's sysfs directory, that is, in +/sys/bus/usb/devices/.../power/ where "..." is the device's ID. The +relevant attribute files is usb2_hardware_lpm. + + power/usb2_hardware_lpm + + When a USB2 device which support LPM is plugged to a + xHCI host root hub which support software LPM, the + host will run a software LPM test for it; if the device + enters L1 state and resume successfully and the host + supports USB2 hardware LPM, this file will show up and + driver will enable hardware LPM for the device. You + can write y/Y/1 or n/N/0 to the file to enable/disable + USB2 hardware LPM manually. This is for test purpose mainly. diff --git a/Documentation/usb/usb-serial.txt b/Documentation/usb/usb-serial.txt index 5bd7926..947fa62 100644 --- a/Documentation/usb/usb-serial.txt +++ b/Documentation/usb/usb-serial.txt @@ -145,7 +145,7 @@ Keyspan PDA Serial Adapter Single port DB-9 serial adapter, pushed as a PDA adapter for iMacs (mostly sold in Macintosh catalogs, comes in a translucent white/green dongle). Fairly simple device. Firmware is homebrew. - This driver also works for the Xircom/Entrgra single port serial adapter. + This driver also works for the Xircom/Entrega single port serial adapter. Current status: Things that work: diff --git a/Documentation/vDSO/parse_vdso.c b/Documentation/vDSO/parse_vdso.c new file mode 100644 index 0000000..8587020 --- /dev/null +++ b/Documentation/vDSO/parse_vdso.c @@ -0,0 +1,256 @@ +/* + * parse_vdso.c: Linux reference vDSO parser + * Written by Andrew Lutomirski, 2011. + * + * This code is meant to be linked in to various programs that run on Linux. + * As such, it is available with as few restrictions as possible. This file + * is licensed under the Creative Commons Zero License, version 1.0, + * available at http://creativecommons.org/publicdomain/zero/1.0/legalcode + * + * The vDSO is a regular ELF DSO that the kernel maps into user space when + * it starts a program. It works equally well in statically and dynamically + * linked binaries. + * + * This code is tested on x86_64. In principle it should work on any 64-bit + * architecture that has a vDSO. + */ + +#include <stdbool.h> +#include <stdint.h> +#include <string.h> +#include <elf.h> + +/* + * To use this vDSO parser, first call one of the vdso_init_* functions. + * If you've already parsed auxv, then pass the value of AT_SYSINFO_EHDR + * to vdso_init_from_sysinfo_ehdr. Otherwise pass auxv to vdso_init_from_auxv. + * Then call vdso_sym for each symbol you want. For example, to look up + * gettimeofday on x86_64, use: + * + * <some pointer> = vdso_sym("LINUX_2.6", "gettimeofday"); + * or + * <some pointer> = vdso_sym("LINUX_2.6", "__vdso_gettimeofday"); + * + * vdso_sym will return 0 if the symbol doesn't exist or if the init function + * failed or was not called. vdso_sym is a little slow, so its return value + * should be cached. + * + * vdso_sym is threadsafe; the init functions are not. + * + * These are the prototypes: + */ +extern void vdso_init_from_auxv(void *auxv); +extern void vdso_init_from_sysinfo_ehdr(uintptr_t base); +extern void *vdso_sym(const char *version, const char *name); + + +/* And here's the code. */ + +#ifndef __x86_64__ +# error Not yet ported to non-x86_64 architectures +#endif + +static struct vdso_info +{ + bool valid; + + /* Load information */ + uintptr_t load_addr; + uintptr_t load_offset; /* load_addr - recorded vaddr */ + + /* Symbol table */ + Elf64_Sym *symtab; + const char *symstrings; + Elf64_Word *bucket, *chain; + Elf64_Word nbucket, nchain; + + /* Version table */ + Elf64_Versym *versym; + Elf64_Verdef *verdef; +} vdso_info; + +/* Straight from the ELF specification. */ +static unsigned long elf_hash(const unsigned char *name) +{ + unsigned long h = 0, g; + while (*name) + { + h = (h << 4) + *name++; + if (g = h & 0xf0000000) + h ^= g >> 24; + h &= ~g; + } + return h; +} + +void vdso_init_from_sysinfo_ehdr(uintptr_t base) +{ + size_t i; + bool found_vaddr = false; + + vdso_info.valid = false; + + vdso_info.load_addr = base; + + Elf64_Ehdr *hdr = (Elf64_Ehdr*)base; + Elf64_Phdr *pt = (Elf64_Phdr*)(vdso_info.load_addr + hdr->e_phoff); + Elf64_Dyn *dyn = 0; + + /* + * We need two things from the segment table: the load offset + * and the dynamic table. + */ + for (i = 0; i < hdr->e_phnum; i++) + { + if (pt[i].p_type == PT_LOAD && !found_vaddr) { + found_vaddr = true; + vdso_info.load_offset = base + + (uintptr_t)pt[i].p_offset + - (uintptr_t)pt[i].p_vaddr; + } else if (pt[i].p_type == PT_DYNAMIC) { + dyn = (Elf64_Dyn*)(base + pt[i].p_offset); + } + } + + if (!found_vaddr || !dyn) + return; /* Failed */ + + /* + * Fish out the useful bits of the dynamic table. + */ + Elf64_Word *hash = 0; + vdso_info.symstrings = 0; + vdso_info.symtab = 0; + vdso_info.versym = 0; + vdso_info.verdef = 0; + for (i = 0; dyn[i].d_tag != DT_NULL; i++) { + switch (dyn[i].d_tag) { + case DT_STRTAB: + vdso_info.symstrings = (const char *) + ((uintptr_t)dyn[i].d_un.d_ptr + + vdso_info.load_offset); + break; + case DT_SYMTAB: + vdso_info.symtab = (Elf64_Sym *) + ((uintptr_t)dyn[i].d_un.d_ptr + + vdso_info.load_offset); + break; + case DT_HASH: + hash = (Elf64_Word *) + ((uintptr_t)dyn[i].d_un.d_ptr + + vdso_info.load_offset); + break; + case DT_VERSYM: + vdso_info.versym = (Elf64_Versym *) + ((uintptr_t)dyn[i].d_un.d_ptr + + vdso_info.load_offset); + break; + case DT_VERDEF: + vdso_info.verdef = (Elf64_Verdef *) + ((uintptr_t)dyn[i].d_un.d_ptr + + vdso_info.load_offset); + break; + } + } + if (!vdso_info.symstrings || !vdso_info.symtab || !hash) + return; /* Failed */ + + if (!vdso_info.verdef) + vdso_info.versym = 0; + + /* Parse the hash table header. */ + vdso_info.nbucket = hash[0]; + vdso_info.nchain = hash[1]; + vdso_info.bucket = &hash[2]; + vdso_info.chain = &hash[vdso_info.nbucket + 2]; + + /* That's all we need. */ + vdso_info.valid = true; +} + +static bool vdso_match_version(Elf64_Versym ver, + const char *name, Elf64_Word hash) +{ + /* + * This is a helper function to check if the version indexed by + * ver matches name (which hashes to hash). + * + * The version definition table is a mess, and I don't know how + * to do this in better than linear time without allocating memory + * to build an index. I also don't know why the table has + * variable size entries in the first place. + * + * For added fun, I can't find a comprehensible specification of how + * to parse all the weird flags in the table. + * + * So I just parse the whole table every time. + */ + + /* First step: find the version definition */ + ver &= 0x7fff; /* Apparently bit 15 means "hidden" */ + Elf64_Verdef *def = vdso_info.verdef; + while(true) { + if ((def->vd_flags & VER_FLG_BASE) == 0 + && (def->vd_ndx & 0x7fff) == ver) + break; + + if (def->vd_next == 0) + return false; /* No definition. */ + + def = (Elf64_Verdef *)((char *)def + def->vd_next); + } + + /* Now figure out whether it matches. */ + Elf64_Verdaux *aux = (Elf64_Verdaux*)((char *)def + def->vd_aux); + return def->vd_hash == hash + && !strcmp(name, vdso_info.symstrings + aux->vda_name); +} + +void *vdso_sym(const char *version, const char *name) +{ + unsigned long ver_hash; + if (!vdso_info.valid) + return 0; + + ver_hash = elf_hash(version); + Elf64_Word chain = vdso_info.bucket[elf_hash(name) % vdso_info.nbucket]; + + for (; chain != STN_UNDEF; chain = vdso_info.chain[chain]) { + Elf64_Sym *sym = &vdso_info.symtab[chain]; + + /* Check for a defined global or weak function w/ right name. */ + if (ELF64_ST_TYPE(sym->st_info) != STT_FUNC) + continue; + if (ELF64_ST_BIND(sym->st_info) != STB_GLOBAL && + ELF64_ST_BIND(sym->st_info) != STB_WEAK) + continue; + if (sym->st_shndx == SHN_UNDEF) + continue; + if (strcmp(name, vdso_info.symstrings + sym->st_name)) + continue; + + /* Check symbol version. */ + if (vdso_info.versym + && !vdso_match_version(vdso_info.versym[chain], + version, ver_hash)) + continue; + + return (void *)(vdso_info.load_offset + sym->st_value); + } + + return 0; +} + +void vdso_init_from_auxv(void *auxv) +{ + Elf64_auxv_t *elf_auxv = auxv; + for (int i = 0; elf_auxv[i].a_type != AT_NULL; i++) + { + if (elf_auxv[i].a_type == AT_SYSINFO_EHDR) { + vdso_init_from_sysinfo_ehdr(elf_auxv[i].a_un.a_val); + return; + } + } + + vdso_info.valid = false; +} diff --git a/Documentation/vDSO/vdso_test.c b/Documentation/vDSO/vdso_test.c new file mode 100644 index 0000000..fff6334 --- /dev/null +++ b/Documentation/vDSO/vdso_test.c @@ -0,0 +1,111 @@ +/* + * vdso_test.c: Sample code to test parse_vdso.c on x86_64 + * Copyright (c) 2011 Andy Lutomirski + * Subject to the GNU General Public License, version 2 + * + * You can amuse yourself by compiling with: + * gcc -std=gnu99 -nostdlib + * -Os -fno-asynchronous-unwind-tables -flto + * vdso_test.c parse_vdso.c -o vdso_test + * to generate a small binary with no dependencies at all. + */ + +#include <sys/syscall.h> +#include <sys/time.h> +#include <unistd.h> +#include <stdint.h> + +extern void *vdso_sym(const char *version, const char *name); +extern void vdso_init_from_sysinfo_ehdr(uintptr_t base); +extern void vdso_init_from_auxv(void *auxv); + +/* We need a libc functions... */ +int strcmp(const char *a, const char *b) +{ + /* This implementation is buggy: it never returns -1. */ + while (*a || *b) { + if (*a != *b) + return 1; + if (*a == 0 || *b == 0) + return 1; + a++; + b++; + } + + return 0; +} + +/* ...and two syscalls. This is x86_64-specific. */ +static inline long linux_write(int fd, const void *data, size_t len) +{ + + long ret; + asm volatile ("syscall" : "=a" (ret) : "a" (__NR_write), + "D" (fd), "S" (data), "d" (len) : + "cc", "memory", "rcx", + "r8", "r9", "r10", "r11" ); + return ret; +} + +static inline void linux_exit(int code) +{ + asm volatile ("syscall" : : "a" (__NR_exit), "D" (code)); +} + +void to_base10(char *lastdig, uint64_t n) +{ + while (n) { + *lastdig = (n % 10) + '0'; + n /= 10; + lastdig--; + } +} + +__attribute__((externally_visible)) void c_main(void **stack) +{ + /* Parse the stack */ + long argc = (long)*stack; + stack += argc + 2; + + /* Now we're pointing at the environment. Skip it. */ + while(*stack) + stack++; + stack++; + + /* Now we're pointing at auxv. Initialize the vDSO parser. */ + vdso_init_from_auxv((void *)stack); + + /* Find gettimeofday. */ + typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz); + gtod_t gtod = (gtod_t)vdso_sym("LINUX_2.6", "__vdso_gettimeofday"); + + if (!gtod) + linux_exit(1); + + struct timeval tv; + long ret = gtod(&tv, 0); + + if (ret == 0) { + char buf[] = "The time is .000000\n"; + to_base10(buf + 31, tv.tv_sec); + to_base10(buf + 38, tv.tv_usec); + linux_write(1, buf, sizeof(buf) - 1); + } else { + linux_exit(ret); + } + + linux_exit(0); +} + +/* + * This is the real entry point. It passes the initial stack into + * the C entry point. + */ +asm ( + ".text\n" + ".global _start\n" + ".type _start,@function\n" + "_start:\n\t" + "mov %rsp,%rdi\n\t" + "jmp c_main" + ); diff --git a/Documentation/video4linux/API.html b/Documentation/video4linux/API.html index d72fd2a..256f8ef 100644 --- a/Documentation/video4linux/API.html +++ b/Documentation/video4linux/API.html @@ -9,7 +9,7 @@ <table border="0"> <tr> <td> - <a href="http://www.linuxtv.org/downloads/video4linux/API/V4L1_API.html">V4L original API</a> + <a href="http://linuxtv.org/downloads/legacy/video4linux/API/V4L1_API.html">V4L original API</a> </td> <td> Obsoleted by V4L2 API diff --git a/Documentation/video4linux/CARDLIST.cx23885 b/Documentation/video4linux/CARDLIST.cx23885 index 87c4634..8910449 100644 --- a/Documentation/video4linux/CARDLIST.cx23885 +++ b/Documentation/video4linux/CARDLIST.cx23885 @@ -27,3 +27,5 @@ 26 -> Hauppauge WinTV-HVR1290 [0070:8551] 27 -> Mygica X8558 PRO DMB-TH [14f1:8578] 28 -> LEADTEK WinFast PxTV1200 [107d:6f22] + 29 -> GoTView X5 3D Hybrid [5654:2390] + 30 -> NetUP Dual DVB-T/C-CI RF [1b55:e2e4] diff --git a/Documentation/video4linux/CARDLIST.cx88 b/Documentation/video4linux/CARDLIST.cx88 index 42517d9..d9c0f11 100644 --- a/Documentation/video4linux/CARDLIST.cx88 +++ b/Documentation/video4linux/CARDLIST.cx88 @@ -84,3 +84,4 @@ 83 -> Prof 7301 DVB-S/S2 [b034:3034] 84 -> Samsung SMT 7020 DVB-S [18ac:dc00,18ac:dccd] 85 -> Twinhan VP-1027 DVB-S [1822:0023] + 86 -> TeVii S464 DVB-S/S2 [d464:9022] diff --git a/Documentation/video4linux/CARDLIST.em28xx b/Documentation/video4linux/CARDLIST.em28xx index 9aae449..4a7b3df 100644 --- a/Documentation/video4linux/CARDLIST.em28xx +++ b/Documentation/video4linux/CARDLIST.em28xx @@ -74,3 +74,5 @@ 74 -> Actionmaster/LinXcel/Digitus VC211A (em2800) 75 -> Dikom DK300 (em2882) 76 -> KWorld PlusTV 340U or UB435-Q (ATSC) (em2870) [1b80:a340] + 77 -> EM2874 Leadership ISDBT (em2874) + 78 -> PCTV nanoStick T2 290e (em28174) diff --git a/Documentation/video4linux/CARDLIST.saa7134 b/Documentation/video4linux/CARDLIST.saa7134 index 6b4c72d..7efae9b 100644 --- a/Documentation/video4linux/CARDLIST.saa7134 +++ b/Documentation/video4linux/CARDLIST.saa7134 @@ -182,3 +182,7 @@ 181 -> TechoTrend TT-budget T-3000 [13c2:2804] 182 -> Kworld PCI SBTVD/ISDB-T Full-Seg Hybrid [17de:b136] 183 -> Compro VideoMate Vista M1F [185b:c900] +184 -> Encore ENLTV-FM 3 [1a7f:2108] +185 -> MagicPro ProHDTV Pro2 DMB-TH/Hybrid [17de:d136] +186 -> Beholder BeholdTV 501 [5ace:5010] +187 -> Beholder BeholdTV 503 FM [5ace:5030] diff --git a/Documentation/video4linux/CARDLIST.tm6000 b/Documentation/video4linux/CARDLIST.tm6000 new file mode 100644 index 0000000..b5edce4 --- /dev/null +++ b/Documentation/video4linux/CARDLIST.tm6000 @@ -0,0 +1,16 @@ + 1 -> Generic tm5600 board (tm5600) [6000:0001] + 2 -> Generic tm6000 board (tm6000) [6000:0001] + 3 -> Generic tm6010 board (tm6010) [6000:0002] + 4 -> 10Moons UT821 (tm5600) [6000:0001] + 5 -> 10Moons UT330 (tm5600) + 6 -> ADSTech Dual TV (tm6000) [06e1:f332] + 7 -> FreeCom and similar (tm6000) [14aa:0620] + 8 -> ADSTech Mini Dual TV (tm6000) [06e1:b339] + 9 -> Hauppauge WinTV HVR-900H/USB2 Stick (tm6010) [2040:6600,2040:6601,2040:6610,2040:6611] + 10 -> Beholder Wander (tm6010) [6000:dec0] + 11 -> Beholder Voyager (tm6010) [6000:dec1] + 12 -> TerraTec Cinergy Hybrid XE/Cinergy Hybrid Stick (tm6010) [0ccd:0086,0ccd:00a5] + 13 -> TwinHan TU501 (tm6010) [13d3:3240,13d3:3241,13d3:3243,13d3:3264] + 14 -> Beholder Wander Lite (tm6010) [6000:dec2] + 15 -> Beholder Voyager Lite (tm6010) [6000:dec3] + diff --git a/Documentation/video4linux/CARDLIST.tuner b/Documentation/video4linux/CARDLIST.tuner index e67c1db..6323b7a 100644 --- a/Documentation/video4linux/CARDLIST.tuner +++ b/Documentation/video4linux/CARDLIST.tuner @@ -78,8 +78,10 @@ tuner=77 - TCL tuner MF02GIP-5N-E tuner=78 - Philips FMD1216MEX MK3 Hybrid Tuner tuner=79 - Philips PAL/SECAM multi (FM1216 MK5) tuner=80 - Philips FQ1216LME MK3 PAL/SECAM w/active loopthrough +tuner=81 - Xceive 4000 tuner tuner=81 - Partsnic (Daewoo) PTI-5NF05 tuner=82 - Philips CU1216L tuner=83 - NXP TDA18271 tuner=84 - Sony BTF-Pxn01Z tuner=85 - Philips FQ1236 MK5 +tuner=86 - Tena TNF5337 MFD diff --git a/Documentation/video4linux/CARDLIST.usbvision b/Documentation/video4linux/CARDLIST.usbvision index 0b72d3f..6fd1af3 100644 --- a/Documentation/video4linux/CARDLIST.usbvision +++ b/Documentation/video4linux/CARDLIST.usbvision @@ -63,3 +63,5 @@ 62 -> Pinnacle PCTV Bungee USB (PAL) FM [2304:0419] 63 -> Hauppauge WinTv-USB [2400:4200] 64 -> Pinnacle Studio PCTV USB (NTSC) FM V3 [2304:0113] + 65 -> Nogatech USB MicroCam NTSC (NV3000N) [0573:3000] + 66 -> Nogatech USB MicroCam PAL (NV3001P) [0573:3001] diff --git a/Documentation/video4linux/README.davinci-vpbe b/Documentation/video4linux/README.davinci-vpbe new file mode 100644 index 0000000..7a460b0 --- /dev/null +++ b/Documentation/video4linux/README.davinci-vpbe @@ -0,0 +1,93 @@ + + VPBE V4L2 driver design + ====================================================================== + + File partitioning + ----------------- + V4L2 display device driver + drivers/media/video/davinci/vpbe_display.c + drivers/media/video/davinci/vpbe_display.h + + VPBE display controller + drivers/media/video/davinci/vpbe.c + drivers/media/video/davinci/vpbe.h + + VPBE venc sub device driver + drivers/media/video/davinci/vpbe_venc.c + drivers/media/video/davinci/vpbe_venc.h + drivers/media/video/davinci/vpbe_venc_regs.h + + VPBE osd driver + drivers/media/video/davinci/vpbe_osd.c + drivers/media/video/davinci/vpbe_osd.h + drivers/media/video/davinci/vpbe_osd_regs.h + + Functional partitioning + ----------------------- + + Consists of the following (in the same order as the list under file + partitioning):- + + 1. V4L2 display driver + Implements creation of video2 and video3 device nodes and + provides v4l2 device interface to manage VID0 and VID1 layers. + + 2. Display controller + Loads up VENC, OSD and external encoders such as ths8200. It provides + a set of API calls to V4L2 drivers to set the output/standards + in the VENC or external sub devices. It also provides + a device object to access the services from OSD subdevice + using sub device ops. The connection of external encoders to VENC LCD + controller port is done at init time based on default output and standard + selection or at run time when application change the output through + V4L2 IOCTLs. + + When connected to an external encoder, vpbe controller is also responsible + for setting up the interface between VENC and external encoders based on + board specific settings (specified in board-xxx-evm.c). This allows + interfacing external encoders such as ths8200. The setup_if_config() + is implemented for this as well as configure_venc() (part of the next patch) + API to set timings in VENC for a specific display resolution. As of this + patch series, the interconnection and enabling and setting of the external + encoders is not present, and would be a part of the next patch series. + + 3. VENC subdevice module + Responsible for setting outputs provided through internal DACs and also + setting timings at LCD controller port when external encoders are connected + at the port or LCD panel timings required. When external encoder/LCD panel + is connected, the timings for a specific standard/preset is retrieved from + the board specific table and the values are used to set the timings in + venc using non-standard timing mode. + + Support LCD Panel displays using the VENC. For example to support a Logic + PD display, it requires setting up the LCD controller port with a set of + timings for the resolution supported and setting the dot clock. So we could + add the available outputs as a board specific entry (i.e add the "LogicPD" + output name to board-xxx-evm.c). A table of timings for various LCDs + supported can be maintained in the board specific setup file to support + various LCD displays.As of this patch a basic driver is present, and this + support for external encoders and displays forms a part of the next + patch series. + + 4. OSD module + OSD module implements all OSD layer management and hardware specific + features. The VPBE module interacts with the OSD for enabling and + disabling appropriate features of the OSD. + + Current status:- + + A fully functional working version of the V4L2 driver is available. This + driver has been tested with NTSC and PAL standards and buffer streaming. + + Following are TBDs. + + vpbe display controller + - Add support for external encoders. + - add support for selecting external encoder as default at probe time. + + vpbe venc sub device + - add timings for supporting ths8200 + - add support for LogicPD LCD. + + FB drivers + - Add support for fbdev drivers.- Ready and part of subsequent patches. diff --git a/Documentation/video4linux/gspca.txt b/Documentation/video4linux/gspca.txt index 5bfa9a7..90aae856 100644 --- a/Documentation/video4linux/gspca.txt +++ b/Documentation/video4linux/gspca.txt @@ -8,6 +8,7 @@ xxxx vend:prod ---- spca501 0000:0000 MystFromOri Unknown Camera spca508 0130:0130 Clone Digital Webcam 11043 +zc3xx 03f0:1b07 HP Premium Starter Cam m5602 0402:5602 ALi Video Camera Controller spca501 040a:0002 Kodak DVC-325 spca500 040a:0300 Kodak EZ200 @@ -54,6 +55,7 @@ zc3xx 0458:700f Genius VideoCam Web V2 sonixj 0458:7025 Genius Eye 311Q sn9c20x 0458:7029 Genius Look 320s sonixj 0458:702e Genius Slim 310 NB +sn9c20x 0458:7045 Genius Look 1320 V2 sn9c20x 0458:704a Genius Slim 1320 sn9c20x 0458:704c Genius i-Look 1321 sn9c20x 045e:00f4 LifeCam VX-6000 (SN9C20x + OV9650) @@ -190,6 +192,7 @@ ov519 05a9:0519 OV519 Microphone ov519 05a9:0530 OmniVision ov519 05a9:2800 OmniVision SuperCAM ov519 05a9:4519 Webcam Classic +ov534_9 05a9:8065 OmniVision test kit ov538+ov9712 ov519 05a9:8519 OmniVision ov519 05a9:a511 D-Link USB Digital Video Camera ov519 05a9:a518 D-Link DSB-C310 Webcam @@ -199,6 +202,8 @@ gl860 05e3:0503 Genesys Logic PC Camera gl860 05e3:f191 Genesys Logic PC Camera spca561 060b:a001 Maxell Compact Pc PM3 zc3xx 0698:2003 CTX M730V built in +topro 06a2:0003 TP6800 PC Camera, CmoX CX0342 webcam +topro 06a2:6810 Creative Qmax nw80x 06a5:0000 Typhoon Webcam 100 USB nw80x 06a5:d001 Divio based webcams nw80x 06a5:d800 Divio Chicony TwinkleCam, Trust SpaceCam diff --git a/Documentation/video4linux/omap3isp.txt b/Documentation/video4linux/omap3isp.txt index 69be2c7..5dd1439 100644 --- a/Documentation/video4linux/omap3isp.txt +++ b/Documentation/video4linux/omap3isp.txt @@ -70,10 +70,11 @@ Events The OMAP 3 ISP driver does support the V4L2 event interface on CCDC and statistics (AEWB, AF and histogram) subdevs. -The CCDC subdev produces V4L2_EVENT_OMAP3ISP_HS_VS type event on HS_VS -interrupt which is used to signal frame start. The event is triggered exactly -when the reception of the first line of the frame starts in the CCDC module. -The event can be subscribed on the CCDC subdev. +The CCDC subdev produces V4L2_EVENT_FRAME_SYNC type event on HS_VS +interrupt which is used to signal frame start. Earlier version of this +driver used V4L2_EVENT_OMAP3ISP_HS_VS for this purpose. The event is +triggered exactly when the reception of the first line of the frame starts +in the CCDC module. The event can be subscribed on the CCDC subdev. (When using parallel interface one must pay account to correct configuration of the VS signal polarity. This is automatically correct when using the serial diff --git a/Documentation/video4linux/v4l2-controls.txt b/Documentation/video4linux/v4l2-controls.txt index 881e7f4..26aa057 100644 --- a/Documentation/video4linux/v4l2-controls.txt +++ b/Documentation/video4linux/v4l2-controls.txt @@ -277,22 +277,19 @@ implement g_volatile_ctrl like this: { switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: - ctrl->cur.val = read_reg(0x123); + ctrl->val = read_reg(0x123); break; } } -The 'new value' union is not used in g_volatile_ctrl. In general controls -that need to implement g_volatile_ctrl are read-only controls. +Note that you use the 'new value' union as well in g_volatile_ctrl. In general +controls that need to implement g_volatile_ctrl are read-only controls. -Note that if one or more controls in a control cluster are marked as volatile, -then all the controls in the cluster are seen as volatile. - -To mark a control as volatile you have to set the is_volatile flag: +To mark a control as volatile you have to set V4L2_CTRL_FLAG_VOLATILE: ctrl = v4l2_ctrl_new_std(&sd->ctrl_handler, ...); if (ctrl) - ctrl->is_volatile = 1; + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; For try/s_ctrl the new values (i.e. as passed by the user) are filled in and you can modify them in try_ctrl or set them in s_ctrl. The 'cur' union @@ -370,8 +367,7 @@ Driver specific controls can be created using v4l2_ctrl_new_custom(): The last argument is the priv pointer which can be set to driver-specific private data. -The v4l2_ctrl_config struct also has fields to set the is_private and is_volatile -flags. +The v4l2_ctrl_config struct also has a field to set the is_private flag. If the name field is not set, then the framework will assume this is a standard control and will fill in the name, type and flags fields accordingly. @@ -453,6 +449,25 @@ In the example above the following are equivalent for the VOLUME case: ctrl == ctrl->cluster[AUDIO_CL_VOLUME] == state->audio_cluster[AUDIO_CL_VOLUME] ctrl->cluster[AUDIO_CL_MUTE] == state->audio_cluster[AUDIO_CL_MUTE] +In practice using cluster arrays like this becomes very tiresome. So instead +the following equivalent method is used: + + struct { + /* audio cluster */ + struct v4l2_ctrl *volume; + struct v4l2_ctrl *mute; + }; + +The anonymous struct is used to clearly 'cluster' these two control pointers, +but it serves no other purpose. The effect is the same as creating an +array with two control pointers. So you can just do: + + state->volume = v4l2_ctrl_new_std(&state->ctrl_handler, ...); + state->mute = v4l2_ctrl_new_std(&state->ctrl_handler, ...); + v4l2_ctrl_cluster(2, &state->volume); + +And in foo_s_ctrl you can use these pointers directly: state->mute->val. + Note that controls in a cluster may be NULL. For example, if for some reason mute was never added (because the hardware doesn't support that particular feature), then mute will be NULL. So in that case we have a @@ -475,6 +490,49 @@ controls, then the 'is_new' flag would be 1 for both controls. The 'is_new' flag is always 1 when called from v4l2_ctrl_handler_setup(). +Handling autogain/gain-type Controls with Auto Clusters +======================================================= + +A common type of control cluster is one that handles 'auto-foo/foo'-type +controls. Typical examples are autogain/gain, autoexposure/exposure, +autowhitebalance/red balance/blue balance. In all cases you have one control +that determines whether another control is handled automatically by the hardware, +or whether it is under manual control from the user. + +If the cluster is in automatic mode, then the manual controls should be +marked inactive and volatile. When the volatile controls are read the +g_volatile_ctrl operation should return the value that the hardware's automatic +mode set up automatically. + +If the cluster is put in manual mode, then the manual controls should become +active again and the volatile flag is cleared (so g_volatile_ctrl is no longer +called while in manual mode). In addition just before switching to manual mode +the current values as determined by the auto mode are copied as the new manual +values. + +Finally the V4L2_CTRL_FLAG_UPDATE should be set for the auto control since +changing that control affects the control flags of the manual controls. + +In order to simplify this a special variation of v4l2_ctrl_cluster was +introduced: + +void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls, + u8 manual_val, bool set_volatile); + +The first two arguments are identical to v4l2_ctrl_cluster. The third argument +tells the framework which value switches the cluster into manual mode. The +last argument will optionally set V4L2_CTRL_FLAG_VOLATILE for the non-auto controls. +If it is false, then the manual controls are never volatile. You would typically +use that if the hardware does not give you the option to read back to values as +determined by the auto mode (e.g. if autogain is on, the hardware doesn't allow +you to obtain the current gain value). + +The first control of the cluster is assumed to be the 'auto' control. + +Using this function will ensure that you don't need to handle all the complex +flag and volatile handling. + + VIDIOC_LOG_STATUS Support ========================= @@ -628,18 +686,6 @@ if there are no controls at all. count if nothing was done yet. If it is less than count then only the controls up to error_idx-1 were successfully applied. -3) When attempting to read a button control the framework will return -EACCES -instead of -EINVAL as stated in the spec. It seems to make more sense since -button controls are write-only controls. - -4) Attempting to write to a read-only control will return -EACCES instead of --EINVAL as the spec says. - -5) The spec does not mention what should happen when you try to set/get a -control class controls. ivtv currently returns -EINVAL (indicating that the -control ID does not exist) while the framework will return -EACCES, which -makes more sense. - Proposals for Extensions ======================== @@ -652,9 +698,3 @@ decimal. Useful for e.g. video_mute_yuv. 2) It is possible to mark in the controls array which controls have been successfully written and which failed by for example adding a bit to the control ID. Not sure if it is worth the effort, though. - -3) Trying to set volatile inactive controls should result in -EACCESS. - -4) Add a new flag to mark volatile controls. Any application that wants -to store the state of the controls can then skip volatile inactive controls. -Currently it is not possible to detect such controls. diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt index cf21f7a..f8dcabf 100644 --- a/Documentation/video4linux/v4l2-framework.txt +++ b/Documentation/video4linux/v4l2-framework.txt @@ -817,11 +817,7 @@ int my_open(struct file *file) ... - ret = v4l2_fh_init(&my_fh->fh, vfd); - if (ret) { - kfree(my_fh); - return ret; - } + v4l2_fh_init(&my_fh->fh, vfd); ... @@ -844,7 +840,7 @@ int my_release(struct file *file) Below is a short description of the v4l2_fh functions used: -int v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev) +void v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev) Initialise the file handle. This *MUST* be performed in the driver's v4l2_file_operations->open() handler. @@ -901,14 +897,38 @@ V4L2 events The V4L2 events provide a generic way to pass events to user space. The driver must use v4l2_fh to be able to support V4L2 events. -Useful functions: +Events are defined by a type and an optional ID. The ID may refer to a V4L2 +object such as a control ID. If unused, then the ID is 0. + +When the user subscribes to an event the driver will allocate a number of +kevent structs for that event. So every (type, ID) event tuple will have +its own set of kevent structs. This guarantees that if a driver is generating +lots of events of one type in a short time, then that will not overwrite +events of another type. + +But if you get more events of one type than the number of kevents that were +reserved, then the oldest event will be dropped and the new one added. + +Furthermore, the internal struct v4l2_subscribed_event has merge() and +replace() callbacks which drivers can set. These callbacks are called when +a new event is raised and there is no more room. The replace() callback +allows you to replace the payload of the old event with that of the new event, +merging any relevant data from the old payload into the new payload that +replaces it. It is called when this event type has only one kevent struct +allocated. The merge() callback allows you to merge the oldest event payload +into that of the second-oldest event payload. It is called when there are two +or more kevent structs allocated. -- v4l2_event_alloc() +This way no status information is lost, just the intermediate steps leading +up to that state. - To use events, the driver must allocate events for the file handle. By - calling the function more than once, the driver may assure that at least n - events in total have been allocated. The function may not be called in - atomic context. +A good example of these replace/merge callbacks is in v4l2-event.c: +ctrls_replace() and ctrls_merge() callbacks for the control event. + +Note: these callbacks can be called from interrupt context, so they must be +fast. + +Useful functions: - v4l2_event_queue() @@ -920,7 +940,9 @@ Useful functions: The video_device->ioctl_ops->vidioc_subscribe_event must check the driver is able to produce events with specified event id. Then it calls - v4l2_event_subscribe() to subscribe the event. + v4l2_event_subscribe() to subscribe the event. The last argument is the + size of the event queue for this event. If it is 0, then the framework + will fill in a default value (this depends on the event type). - v4l2_event_unsubscribe() @@ -935,14 +957,8 @@ Useful functions: Returns the number of pending events. Useful when implementing poll. -Drivers do not initialise events directly. The events are initialised -through v4l2_fh_init() if video_device->ioctl_ops->vidioc_subscribe_event is -non-NULL. This *MUST* be performed in the driver's -v4l2_file_operations->open() handler. - Events are delivered to user space through the poll system call. The driver -can use v4l2_fh->events->wait wait_queue_head_t as the argument for -poll_wait(). +can use v4l2_fh->wait (a wait_queue_head_t) as the argument for poll_wait(). There are standard and private events. New standard events must use the smallest available event type. The drivers must allocate their events from @@ -952,5 +968,4 @@ The first event type in the class is reserved for future use, so the first available event type is 'class base + 1'. An example on how the V4L2 events may be used can be found in the OMAP -3 ISP driver available at <URL:http://gitorious.org/omap3camera> as of -writing this. +3 ISP driver (drivers/media/video/omap3isp). diff --git a/Documentation/virtual/00-INDEX b/Documentation/virtual/00-INDEX index fe0251c..8e60199 100644 --- a/Documentation/virtual/00-INDEX +++ b/Documentation/virtual/00-INDEX @@ -8,3 +8,6 @@ lguest/ - Extremely simple hypervisor for experimental/educational use. uml/ - User Mode Linux, builds/runs Linux kernel as a userspace program. +virtio.txt + - Text version of draft virtio spec. + See http://ozlabs.org/~rusty/virtio-spec diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 42542eb..e2a4b52 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -175,10 +175,43 @@ Parameters: vcpu id (apic id on x86) Returns: vcpu fd on success, -1 on error This API adds a vcpu to a virtual machine. The vcpu id is a small integer -in the range [0, max_vcpus). You can use KVM_CAP_NR_VCPUS of the -KVM_CHECK_EXTENSION ioctl() to determine the value for max_vcpus at run-time. +in the range [0, max_vcpus). + +The recommended max_vcpus value can be retrieved using the KVM_CAP_NR_VCPUS of +the KVM_CHECK_EXTENSION ioctl() at run-time. +The maximum possible value for max_vcpus can be retrieved using the +KVM_CAP_MAX_VCPUS of the KVM_CHECK_EXTENSION ioctl() at run-time. + If the KVM_CAP_NR_VCPUS does not exist, you should assume that max_vcpus is 4 cpus max. +If the KVM_CAP_MAX_VCPUS does not exist, you should assume that max_vcpus is +same as the value returned from KVM_CAP_NR_VCPUS. + +On powerpc using book3s_hv mode, the vcpus are mapped onto virtual +threads in one or more virtual CPU cores. (This is because the +hardware requires all the hardware threads in a CPU core to be in the +same partition.) The KVM_CAP_PPC_SMT capability indicates the number +of vcpus per virtual core (vcore). The vcore id is obtained by +dividing the vcpu id by the number of vcpus per vcore. The vcpus in a +given vcore will always be in the same physical core as each other +(though that might be a different physical core from time to time). +Userspace can control the threading (SMT) mode of the guest by its +allocation of vcpu ids. For example, if userspace wants +single-threaded guest vcpus, it should make all vcpu ids be a multiple +of the number of vcpus per vcore. + +On powerpc using book3s_hv mode, the vcpus are mapped onto virtual +threads in one or more virtual CPU cores. (This is because the +hardware requires all the hardware threads in a CPU core to be in the +same partition.) The KVM_CAP_PPC_SMT capability indicates the number +of vcpus per virtual core (vcore). The vcore id is obtained by +dividing the vcpu id by the number of vcpus per vcore. The vcpus in a +given vcore will always be in the same physical core as each other +(though that might be a different physical core from time to time). +Userspace can control the threading (SMT) mode of the guest by its +allocation of vcpu ids. For example, if userspace wants +single-threaded guest vcpus, it should make all vcpu ids be a multiple +of the number of vcpus per vcore. 4.8 KVM_GET_DIRTY_LOG (vm ioctl) @@ -1067,6 +1100,15 @@ emulate them efficiently. The fields in each entry are defined as follows: eax, ebx, ecx, edx: the values returned by the cpuid instruction for this function/index combination +The TSC deadline timer feature (CPUID leaf 1, ecx[24]) is always returned +as false, since the feature depends on KVM_CREATE_IRQCHIP for local APIC +support. Instead it is reported via + + ioctl(KVM_CHECK_EXTENSION, KVM_CAP_TSC_DEADLINE_TIMER) + +if that returns true and you use KVM_CREATE_IRQCHIP, or if you emulate the +feature in userspace, then you can enable the feature for KVM_SET_CPUID2. + 4.47 KVM_PPC_GET_PVINFO Capability: KVM_CAP_PPC_GET_PVINFO @@ -1118,6 +1160,13 @@ following flags are specified: /* Depends on KVM_CAP_IOMMU */ #define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0) +The KVM_DEV_ASSIGN_ENABLE_IOMMU flag is a mandatory option to ensure +isolation of the device. Usages not specifying this flag are deprecated. + +Only PCI header type 0 devices with PCI BAR resources are supported by +device assignment. The user requesting this ioctl must have read/write +access to the PCI sysfs resource files associated with the device. + 4.49 KVM_DEASSIGN_PCI_DEVICE Capability: KVM_CAP_DEVICE_DEASSIGNMENT @@ -1143,15 +1192,10 @@ Assigns an IRQ to a passed-through device. struct kvm_assigned_irq { __u32 assigned_dev_id; - __u32 host_irq; + __u32 host_irq; /* ignored (legacy field) */ __u32 guest_irq; __u32 flags; union { - struct { - __u32 addr_lo; - __u32 addr_hi; - __u32 data; - } guest_msi; __u32 reserved[12]; }; }; @@ -1239,8 +1283,10 @@ Type: vm ioctl Parameters: struct kvm_assigned_msix_nr (in) Returns: 0 on success, -1 on error -Set the number of MSI-X interrupts for an assigned device. This service can -only be called once in the lifetime of an assigned device. +Set the number of MSI-X interrupts for an assigned device. The number is +reset again by terminating the MSI-X assignment of the device via +KVM_DEASSIGN_DEV_IRQ. Calling this service more than once at any earlier +point will fail. struct kvm_assigned_msix_nr { __u32 assigned_dev_id; @@ -1291,6 +1337,135 @@ Returns the tsc frequency of the guest. The unit of the return value is KHz. If the host has unstable tsc this ioctl returns -EIO instead as an error. +4.56 KVM_GET_LAPIC + +Capability: KVM_CAP_IRQCHIP +Architectures: x86 +Type: vcpu ioctl +Parameters: struct kvm_lapic_state (out) +Returns: 0 on success, -1 on error + +#define KVM_APIC_REG_SIZE 0x400 +struct kvm_lapic_state { + char regs[KVM_APIC_REG_SIZE]; +}; + +Reads the Local APIC registers and copies them into the input argument. The +data format and layout are the same as documented in the architecture manual. + +4.57 KVM_SET_LAPIC + +Capability: KVM_CAP_IRQCHIP +Architectures: x86 +Type: vcpu ioctl +Parameters: struct kvm_lapic_state (in) +Returns: 0 on success, -1 on error + +#define KVM_APIC_REG_SIZE 0x400 +struct kvm_lapic_state { + char regs[KVM_APIC_REG_SIZE]; +}; + +Copies the input argument into the the Local APIC registers. The data format +and layout are the same as documented in the architecture manual. + +4.58 KVM_IOEVENTFD + +Capability: KVM_CAP_IOEVENTFD +Architectures: all +Type: vm ioctl +Parameters: struct kvm_ioeventfd (in) +Returns: 0 on success, !0 on error + +This ioctl attaches or detaches an ioeventfd to a legal pio/mmio address +within the guest. A guest write in the registered address will signal the +provided event instead of triggering an exit. + +struct kvm_ioeventfd { + __u64 datamatch; + __u64 addr; /* legal pio/mmio address */ + __u32 len; /* 1, 2, 4, or 8 bytes */ + __s32 fd; + __u32 flags; + __u8 pad[36]; +}; + +The following flags are defined: + +#define KVM_IOEVENTFD_FLAG_DATAMATCH (1 << kvm_ioeventfd_flag_nr_datamatch) +#define KVM_IOEVENTFD_FLAG_PIO (1 << kvm_ioeventfd_flag_nr_pio) +#define KVM_IOEVENTFD_FLAG_DEASSIGN (1 << kvm_ioeventfd_flag_nr_deassign) + +If datamatch flag is set, the event will be signaled only if the written value +to the registered address is equal to datamatch in struct kvm_ioeventfd. + +4.62 KVM_CREATE_SPAPR_TCE + +Capability: KVM_CAP_SPAPR_TCE +Architectures: powerpc +Type: vm ioctl +Parameters: struct kvm_create_spapr_tce (in) +Returns: file descriptor for manipulating the created TCE table + +This creates a virtual TCE (translation control entry) table, which +is an IOMMU for PAPR-style virtual I/O. It is used to translate +logical addresses used in virtual I/O into guest physical addresses, +and provides a scatter/gather capability for PAPR virtual I/O. + +/* for KVM_CAP_SPAPR_TCE */ +struct kvm_create_spapr_tce { + __u64 liobn; + __u32 window_size; +}; + +The liobn field gives the logical IO bus number for which to create a +TCE table. The window_size field specifies the size of the DMA window +which this TCE table will translate - the table will contain one 64 +bit TCE entry for every 4kiB of the DMA window. + +When the guest issues an H_PUT_TCE hcall on a liobn for which a TCE +table has been created using this ioctl(), the kernel will handle it +in real mode, updating the TCE table. H_PUT_TCE calls for other +liobns will cause a vm exit and must be handled by userspace. + +The return value is a file descriptor which can be passed to mmap(2) +to map the created TCE table into userspace. This lets userspace read +the entries written by kernel-handled H_PUT_TCE calls, and also lets +userspace update the TCE table directly which is useful in some +circumstances. + +4.63 KVM_ALLOCATE_RMA + +Capability: KVM_CAP_PPC_RMA +Architectures: powerpc +Type: vm ioctl +Parameters: struct kvm_allocate_rma (out) +Returns: file descriptor for mapping the allocated RMA + +This allocates a Real Mode Area (RMA) from the pool allocated at boot +time by the kernel. An RMA is a physically-contiguous, aligned region +of memory used on older POWER processors to provide the memory which +will be accessed by real-mode (MMU off) accesses in a KVM guest. +POWER processors support a set of sizes for the RMA that usually +includes 64MB, 128MB, 256MB and some larger powers of two. + +/* for KVM_ALLOCATE_RMA */ +struct kvm_allocate_rma { + __u64 rma_size; +}; + +The return value is a file descriptor which can be passed to mmap(2) +to map the allocated RMA into userspace. The mapped area can then be +passed to the KVM_SET_USER_MEMORY_REGION ioctl to establish it as the +RMA for a virtual machine. The size of the RMA in bytes (which is +fixed at host kernel boot time) is returned in the rma_size field of +the argument structure. + +The KVM_CAP_PPC_RMA capability is 1 or 2 if the KVM_ALLOCATE_RMA ioctl +is supported; 2 if the processor requires all virtual machines to have +an RMA, or 1 if the processor can use an RMA but doesn't require it, +because it supports the Virtual RMA (VRMA) facility. + 5. The kvm_run structure Application code obtains a pointer to the kvm_run structure by @@ -1473,7 +1648,71 @@ Userspace can now handle the hypercall and when it's done modify the gprs as necessary. Upon guest entry all guest GPRs will then be replaced by the values in this struct. + /* KVM_EXIT_PAPR_HCALL */ + struct { + __u64 nr; + __u64 ret; + __u64 args[9]; + } papr_hcall; + +This is used on 64-bit PowerPC when emulating a pSeries partition, +e.g. with the 'pseries' machine type in qemu. It occurs when the +guest does a hypercall using the 'sc 1' instruction. The 'nr' field +contains the hypercall number (from the guest R3), and 'args' contains +the arguments (from the guest R4 - R12). Userspace should put the +return code in 'ret' and any extra returned values in args[]. +The possible hypercalls are defined in the Power Architecture Platform +Requirements (PAPR) document available from www.power.org (free +developer registration required to access it). + /* Fix the size of the union. */ char padding[256]; }; }; + +6. Capabilities that can be enabled + +There are certain capabilities that change the behavior of the virtual CPU when +enabled. To enable them, please see section 4.37. Below you can find a list of +capabilities and what their effect on the vCPU is when enabling them. + +The following information is provided along with the description: + + Architectures: which instruction set architectures provide this ioctl. + x86 includes both i386 and x86_64. + + Parameters: what parameters are accepted by the capability. + + Returns: the return value. General error numbers (EBADF, ENOMEM, EINVAL) + are not detailed, but errors with specific meanings are. + +6.1 KVM_CAP_PPC_OSI + +Architectures: ppc +Parameters: none +Returns: 0 on success; -1 on error + +This capability enables interception of OSI hypercalls that otherwise would +be treated as normal system calls to be injected into the guest. OSI hypercalls +were invented by Mac-on-Linux to have a standardized communication mechanism +between the guest and the host. + +When this capability is enabled, KVM_EXIT_OSI can occur. + +6.2 KVM_CAP_PPC_PAPR + +Architectures: ppc +Parameters: none +Returns: 0 on success; -1 on error + +This capability enables interception of PAPR hypercalls. PAPR hypercalls are +done using the hypercall instruction "sc 1". + +It also sets the guest privilege level to "supervisor" mode. Usually the guest +runs in "hypervisor" privilege mode with a few missing features. + +In addition to the above, it changes the semantics of SDR1. In this mode, the +HTAB address part of SDR1 contains an HVA instead of a GPA, as PAPR keeps the +HTAB invisible to the guest. + +When this capability is enabled, KVM_EXIT_PAPR_HCALL can occur. diff --git a/Documentation/virtual/kvm/mmu.txt b/Documentation/virtual/kvm/mmu.txt index f46aa58..5dc972c 100644 --- a/Documentation/virtual/kvm/mmu.txt +++ b/Documentation/virtual/kvm/mmu.txt @@ -165,6 +165,10 @@ Shadow pages contain the following information: Contains the value of efer.nxe for which the page is valid. role.cr0_wp: Contains the value of cr0.wp for which the page is valid. + role.smep_andnot_wp: + Contains the value of cr4.smep && !cr0.wp for which the page is valid + (pages for which this is true are different from other pages; see the + treatment of cr0.wp=0 below). gfn: Either the guest page table containing the translations shadowed by this page, or the base page frame for linear translations. See role.direct. @@ -317,6 +321,20 @@ on fault type: (user write faults generate a #PF) +In the first case there is an additional complication if CR4.SMEP is +enabled: since we've turned the page into a kernel page, the kernel may now +execute it. We handle this by also setting spte.nx. If we get a user +fetch or read fault, we'll change spte.u=1 and spte.nx=gpte.nx back. + +To prevent an spte that was converted into a kernel page with cr0.wp=0 +from being written by the kernel after cr0.wp has changed to 1, we make +the value of cr0.wp part of the page role. This means that an spte created +with one value of cr0.wp cannot be used when cr0.wp has a different value - +it will simply be missed by the shadow page lookup code. A similar issue +exists when an spte created with cr0.wp=0 and cr4.smep=0 is used after +changing cr4.smep to 1. To avoid this, the value of !cr0.wp && cr4.smep +is also made a part of the page role. + Large pages =========== diff --git a/Documentation/virtual/kvm/msr.txt b/Documentation/virtual/kvm/msr.txt index d079aed..5031780 100644 --- a/Documentation/virtual/kvm/msr.txt +++ b/Documentation/virtual/kvm/msr.txt @@ -185,3 +185,37 @@ MSR_KVM_ASYNC_PF_EN: 0x4b564d02 Currently type 2 APF will be always delivered on the same vcpu as type 1 was, but guest should not rely on that. + +MSR_KVM_STEAL_TIME: 0x4b564d03 + + data: 64-byte alignment physical address of a memory area which must be + in guest RAM, plus an enable bit in bit 0. This memory is expected to + hold a copy of the following structure: + + struct kvm_steal_time { + __u64 steal; + __u32 version; + __u32 flags; + __u32 pad[12]; + } + + whose data will be filled in by the hypervisor periodically. Only one + write, or registration, is needed for each VCPU. The interval between + updates of this structure is arbitrary and implementation-dependent. + The hypervisor may update this structure at any time it sees fit until + anything with bit0 == 0 is written to it. Guest is required to make sure + this structure is initialized to zero. + + Fields have the following meanings: + + version: a sequence counter. In other words, guest has to check + this field before and after grabbing time information and make + sure they are both equal and even. An odd version indicates an + in-progress update. + + flags: At this point, always zero. May be used to indicate + changes in this structure in the future. + + steal: the amount of time in which this vCPU did not run, in + nanoseconds. Time during which the vcpu is idle, will not be + reported as steal time. diff --git a/Documentation/virtual/kvm/nested-vmx.txt b/Documentation/virtual/kvm/nested-vmx.txt new file mode 100644 index 0000000..8ed937d --- /dev/null +++ b/Documentation/virtual/kvm/nested-vmx.txt @@ -0,0 +1,251 @@ +Nested VMX +========== + +Overview +--------- + +On Intel processors, KVM uses Intel's VMX (Virtual-Machine eXtensions) +to easily and efficiently run guest operating systems. Normally, these guests +*cannot* themselves be hypervisors running their own guests, because in VMX, +guests cannot use VMX instructions. + +The "Nested VMX" feature adds this missing capability - of running guest +hypervisors (which use VMX) with their own nested guests. It does so by +allowing a guest to use VMX instructions, and correctly and efficiently +emulating them using the single level of VMX available in the hardware. + +We describe in much greater detail the theory behind the nested VMX feature, +its implementation and its performance characteristics, in the OSDI 2010 paper +"The Turtles Project: Design and Implementation of Nested Virtualization", +available at: + + http://www.usenix.org/events/osdi10/tech/full_papers/Ben-Yehuda.pdf + + +Terminology +----------- + +Single-level virtualization has two levels - the host (KVM) and the guests. +In nested virtualization, we have three levels: The host (KVM), which we call +L0, the guest hypervisor, which we call L1, and its nested guest, which we +call L2. + + +Known limitations +----------------- + +The current code supports running Linux guests under KVM guests. +Only 64-bit guest hypervisors are supported. + +Additional patches for running Windows under guest KVM, and Linux under +guest VMware server, and support for nested EPT, are currently running in +the lab, and will be sent as follow-on patchsets. + + +Running nested VMX +------------------ + +The nested VMX feature is disabled by default. It can be enabled by giving +the "nested=1" option to the kvm-intel module. + +No modifications are required to user space (qemu). However, qemu's default +emulated CPU type (qemu64) does not list the "VMX" CPU feature, so it must be +explicitly enabled, by giving qemu one of the following options: + + -cpu host (emulated CPU has all features of the real CPU) + + -cpu qemu64,+vmx (add just the vmx feature to a named CPU type) + + +ABIs +---- + +Nested VMX aims to present a standard and (eventually) fully-functional VMX +implementation for the a guest hypervisor to use. As such, the official +specification of the ABI that it provides is Intel's VMX specification, +namely volume 3B of their "Intel 64 and IA-32 Architectures Software +Developer's Manual". Not all of VMX's features are currently fully supported, +but the goal is to eventually support them all, starting with the VMX features +which are used in practice by popular hypervisors (KVM and others). + +As a VMX implementation, nested VMX presents a VMCS structure to L1. +As mandated by the spec, other than the two fields revision_id and abort, +this structure is *opaque* to its user, who is not supposed to know or care +about its internal structure. Rather, the structure is accessed through the +VMREAD and VMWRITE instructions. +Still, for debugging purposes, KVM developers might be interested to know the +internals of this structure; This is struct vmcs12 from arch/x86/kvm/vmx.c. + +The name "vmcs12" refers to the VMCS that L1 builds for L2. In the code we +also have "vmcs01", the VMCS that L0 built for L1, and "vmcs02" is the VMCS +which L0 builds to actually run L2 - how this is done is explained in the +aforementioned paper. + +For convenience, we repeat the content of struct vmcs12 here. If the internals +of this structure changes, this can break live migration across KVM versions. +VMCS12_REVISION (from vmx.c) should be changed if struct vmcs12 or its inner +struct shadow_vmcs is ever changed. + + typedef u64 natural_width; + struct __packed vmcs12 { + /* According to the Intel spec, a VMCS region must start with + * these two user-visible fields */ + u32 revision_id; + u32 abort; + + u32 launch_state; /* set to 0 by VMCLEAR, to 1 by VMLAUNCH */ + u32 padding[7]; /* room for future expansion */ + + u64 io_bitmap_a; + u64 io_bitmap_b; + u64 msr_bitmap; + u64 vm_exit_msr_store_addr; + u64 vm_exit_msr_load_addr; + u64 vm_entry_msr_load_addr; + u64 tsc_offset; + u64 virtual_apic_page_addr; + u64 apic_access_addr; + u64 ept_pointer; + u64 guest_physical_address; + u64 vmcs_link_pointer; + u64 guest_ia32_debugctl; + u64 guest_ia32_pat; + u64 guest_ia32_efer; + u64 guest_pdptr0; + u64 guest_pdptr1; + u64 guest_pdptr2; + u64 guest_pdptr3; + u64 host_ia32_pat; + u64 host_ia32_efer; + u64 padding64[8]; /* room for future expansion */ + natural_width cr0_guest_host_mask; + natural_width cr4_guest_host_mask; + natural_width cr0_read_shadow; + natural_width cr4_read_shadow; + natural_width cr3_target_value0; + natural_width cr3_target_value1; + natural_width cr3_target_value2; + natural_width cr3_target_value3; + natural_width exit_qualification; + natural_width guest_linear_address; + natural_width guest_cr0; + natural_width guest_cr3; + natural_width guest_cr4; + natural_width guest_es_base; + natural_width guest_cs_base; + natural_width guest_ss_base; + natural_width guest_ds_base; + natural_width guest_fs_base; + natural_width guest_gs_base; + natural_width guest_ldtr_base; + natural_width guest_tr_base; + natural_width guest_gdtr_base; + natural_width guest_idtr_base; + natural_width guest_dr7; + natural_width guest_rsp; + natural_width guest_rip; + natural_width guest_rflags; + natural_width guest_pending_dbg_exceptions; + natural_width guest_sysenter_esp; + natural_width guest_sysenter_eip; + natural_width host_cr0; + natural_width host_cr3; + natural_width host_cr4; + natural_width host_fs_base; + natural_width host_gs_base; + natural_width host_tr_base; + natural_width host_gdtr_base; + natural_width host_idtr_base; + natural_width host_ia32_sysenter_esp; + natural_width host_ia32_sysenter_eip; + natural_width host_rsp; + natural_width host_rip; + natural_width paddingl[8]; /* room for future expansion */ + u32 pin_based_vm_exec_control; + u32 cpu_based_vm_exec_control; + u32 exception_bitmap; + u32 page_fault_error_code_mask; + u32 page_fault_error_code_match; + u32 cr3_target_count; + u32 vm_exit_controls; + u32 vm_exit_msr_store_count; + u32 vm_exit_msr_load_count; + u32 vm_entry_controls; + u32 vm_entry_msr_load_count; + u32 vm_entry_intr_info_field; + u32 vm_entry_exception_error_code; + u32 vm_entry_instruction_len; + u32 tpr_threshold; + u32 secondary_vm_exec_control; + u32 vm_instruction_error; + u32 vm_exit_reason; + u32 vm_exit_intr_info; + u32 vm_exit_intr_error_code; + u32 idt_vectoring_info_field; + u32 idt_vectoring_error_code; + u32 vm_exit_instruction_len; + u32 vmx_instruction_info; + u32 guest_es_limit; + u32 guest_cs_limit; + u32 guest_ss_limit; + u32 guest_ds_limit; + u32 guest_fs_limit; + u32 guest_gs_limit; + u32 guest_ldtr_limit; + u32 guest_tr_limit; + u32 guest_gdtr_limit; + u32 guest_idtr_limit; + u32 guest_es_ar_bytes; + u32 guest_cs_ar_bytes; + u32 guest_ss_ar_bytes; + u32 guest_ds_ar_bytes; + u32 guest_fs_ar_bytes; + u32 guest_gs_ar_bytes; + u32 guest_ldtr_ar_bytes; + u32 guest_tr_ar_bytes; + u32 guest_interruptibility_info; + u32 guest_activity_state; + u32 guest_sysenter_cs; + u32 host_ia32_sysenter_cs; + u32 padding32[8]; /* room for future expansion */ + u16 virtual_processor_id; + u16 guest_es_selector; + u16 guest_cs_selector; + u16 guest_ss_selector; + u16 guest_ds_selector; + u16 guest_fs_selector; + u16 guest_gs_selector; + u16 guest_ldtr_selector; + u16 guest_tr_selector; + u16 host_es_selector; + u16 host_cs_selector; + u16 host_ss_selector; + u16 host_ds_selector; + u16 host_fs_selector; + u16 host_gs_selector; + u16 host_tr_selector; + }; + + +Authors +------- + +These patches were written by: + Abel Gordon, abelg <at> il.ibm.com + Nadav Har'El, nyh <at> il.ibm.com + Orit Wasserman, oritw <at> il.ibm.com + Ben-Ami Yassor, benami <at> il.ibm.com + Muli Ben-Yehuda, muli <at> il.ibm.com + +With contributions by: + Anthony Liguori, aliguori <at> us.ibm.com + Mike Day, mdday <at> us.ibm.com + Michael Factor, factor <at> il.ibm.com + Zvi Dubitzky, dubi <at> il.ibm.com + +And valuable reviews by: + Avi Kivity, avi <at> redhat.com + Gleb Natapov, gleb <at> redhat.com + Marcelo Tosatti, mtosatti <at> redhat.com + Kevin Tian, kevin.tian <at> intel.com + and others. diff --git a/Documentation/virtual/kvm/ppc-pv.txt b/Documentation/virtual/kvm/ppc-pv.txt index 3ab969c..2b7ce19 100644 --- a/Documentation/virtual/kvm/ppc-pv.txt +++ b/Documentation/virtual/kvm/ppc-pv.txt @@ -68,9 +68,11 @@ page that contains parts of supervisor visible register state. The guest can map this shared page using the KVM hypercall KVM_HC_PPC_MAP_MAGIC_PAGE. With this hypercall issued the guest always gets the magic page mapped at the -desired location in effective and physical address space. For now, we always -map the page to -4096. This way we can access it using absolute load and store -functions. The following instruction reads the first field of the magic page: +desired location. The first parameter indicates the effective address when the +MMU is enabled. The second parameter indicates the address in real mode, if +applicable to the target. For now, we always map the page to -4096. This way we +can access it using absolute load and store functions. The following +instruction reads the first field of the magic page: ld rX, -4096(0) diff --git a/Documentation/virtual/lguest/lguest.c b/Documentation/virtual/lguest/lguest.c index aec80e5..288dba6 100644 --- a/Documentation/virtual/lguest/lguest.c +++ b/Documentation/virtual/lguest/lguest.c @@ -51,7 +51,7 @@ #include <asm/bootparam.h> #include "../../../include/linux/lguest_launcher.h" /*L:110 - * We can ignore the 42 include files we need for this program, but I do want + * We can ignore the 43 include files we need for this program, but I do want * to draw attention to the use of kernel-style types. * * As Linus said, "C is a Spartan language, and so should your naming be." I @@ -65,7 +65,6 @@ typedef uint16_t u16; typedef uint8_t u8; /*:*/ -#define PAGE_PRESENT 0x7 /* Present, RW, Execute */ #define BRIDGE_PFX "bridge:" #ifndef SIOCBRADDIF #define SIOCBRADDIF 0x89a2 /* add interface to bridge */ @@ -437,7 +436,7 @@ static unsigned long load_bzimage(int fd) /* * Go back to the start of the file and read the header. It should be - * a Linux boot header (see Documentation/x86/i386/boot.txt) + * a Linux boot header (see Documentation/x86/boot.txt) */ lseek(fd, 0, SEEK_SET); read(fd, &boot, sizeof(boot)); @@ -861,8 +860,10 @@ static void console_output(struct virtqueue *vq) /* writev can return a partial write, so we loop here. */ while (!iov_empty(iov, out)) { int len = writev(STDOUT_FILENO, iov, out); - if (len <= 0) - err(1, "Write to stdout gave %i", len); + if (len <= 0) { + warn("Write to stdout gave %i (%d)", len, errno); + break; + } iov_consume(iov, out, len); } @@ -898,7 +899,7 @@ static void net_output(struct virtqueue *vq) * same format: what a coincidence! */ if (writev(net_info->tunfd, iov, out) < 0) - errx(1, "Write to tun failed?"); + warnx("Write to tun failed (%d)?", errno); /* * Done with that one; wait_for_vq_desc() will send the interrupt if @@ -955,7 +956,7 @@ static void net_input(struct virtqueue *vq) */ len = readv(net_info->tunfd, iov, in); if (len <= 0) - err(1, "Failed to read from tun."); + warn("Failed to read from tun (%d).", errno); /* * Mark that packet buffer as used, but don't interrupt here. We want @@ -1093,9 +1094,10 @@ static void update_device_status(struct device *dev) warnx("Device %s configuration FAILED", dev->name); if (dev->running) reset_device(dev); - } else if (dev->desc->status & VIRTIO_CONFIG_S_DRIVER_OK) { - if (!dev->running) - start_device(dev); + } else { + if (dev->running) + err(1, "Device %s features finalized twice", dev->name); + start_device(dev); } } @@ -1120,25 +1122,11 @@ static void handle_output(unsigned long addr) return; } - /* - * Devices *can* be used before status is set to DRIVER_OK. - * The original plan was that they would never do this: they - * would always finish setting up their status bits before - * actually touching the virtqueues. In practice, we allowed - * them to, and they do (eg. the disk probes for partition - * tables as part of initialization). - * - * If we see this, we start the device: once it's running, we - * expect the device to catch all the notifications. - */ + /* Devices should not be used before features are finalized. */ for (vq = i->vq; vq; vq = vq->next) { if (addr != vq->config.pfn*getpagesize()) continue; - if (i->running) - errx(1, "Notification on running %s", i->name); - /* This just calls create_thread() for each virtqueue */ - start_device(i); - return; + errx(1, "Notification on %s before setup!", i->name); } } @@ -1311,6 +1299,7 @@ static struct device *new_device(const char *name, u16 type) dev->feature_len = 0; dev->num_vq = 0; dev->running = false; + dev->next = NULL; /* * Append to device list. Prepending to a single-linked list is @@ -1370,7 +1359,7 @@ static void setup_console(void) * --sharenet=<name> option which opens or creates a named pipe. This can be * used to send packets to another guest in a 1:1 manner. * - * More sopisticated is to use one of the tools developed for project like UML + * More sophisticated is to use one of the tools developed for project like UML * to do networking. * * Faster is to do virtio bonding in kernel. Doing this 1:1 would be @@ -1380,7 +1369,7 @@ static void setup_console(void) * multiple inter-guest channels behind one interface, although it would * require some manner of hotplugging new virtio channels. * - * Finally, we could implement a virtio network switch in the kernel. + * Finally, we could use a virtio network switch in the kernel, ie. vhost. :*/ static u32 str2ip(const char *ipaddr) @@ -2020,10 +2009,7 @@ int main(int argc, char *argv[]) /* Tell the entry path not to try to reload segment registers. */ boot->hdr.loadflags |= KEEP_SEGMENTS; - /* - * We tell the kernel to initialize the Guest: this returns the open - * /dev/lguest file descriptor. - */ + /* We tell the kernel to initialize the Guest. */ tell_kernel(start); /* Ensure that we terminate if a device-servicing child dies. */ diff --git a/Documentation/virtual/uml/UserModeLinux-HOWTO.txt b/Documentation/virtual/uml/UserModeLinux-HOWTO.txt index 5d0fc8b..77dfecf 100644 --- a/Documentation/virtual/uml/UserModeLinux-HOWTO.txt +++ b/Documentation/virtual/uml/UserModeLinux-HOWTO.txt @@ -134,13 +134,13 @@ ______________________________________________________________________ - 11.. IInnttrroodduuccttiioonn + 1. Introduction Welcome to User Mode Linux. It's going to be fun. - 11..11.. HHooww iiss UUsseerr MMooddee LLiinnuuxx DDiiffffeerreenntt?? + 1.1. How is User Mode Linux Different? Normally, the Linux Kernel talks straight to your hardware (video card, keyboard, hard drives, etc), and any programs which run ask the @@ -181,7 +181,7 @@ - 11..22.. WWhhyy WWoouulldd II WWaanntt UUsseerr MMooddee LLiinnuuxx?? + 1.2. Why Would I Want User Mode Linux? 1. If User Mode Linux crashes, your host kernel is still fine. @@ -206,12 +206,12 @@ - 22.. CCoommppiilliinngg tthhee kkeerrnneell aanndd mmoodduulleess + 2. Compiling the kernel and modules - 22..11.. CCoommppiilliinngg tthhee kkeerrnneell + 2.1. Compiling the kernel Compiling the user mode kernel is just like compiling any other @@ -322,7 +322,7 @@ bug fixes and enhancements that have gone into subsequent releases. - 22..22.. CCoommppiilliinngg aanndd iinnssttaalllliinngg kkeerrnneell mmoodduulleess + 2.2. Compiling and installing kernel modules UML modules are built in the same way as the native kernel (with the exception of the 'ARCH=um' that you always need for UML): @@ -386,19 +386,19 @@ - 22..33.. CCoommppiilliinngg aanndd iinnssttaalllliinngg uummll__uuttiilliittiieess + 2.3. Compiling and installing uml_utilities Many features of the UML kernel require a user-space helper program, so a uml_utilities package is distributed separately from the kernel patch which provides these helpers. Included within this is: - +o port-helper - Used by consoles which connect to xterms or ports + o port-helper - Used by consoles which connect to xterms or ports - +o tunctl - Configuration tool to create and delete tap devices + o tunctl - Configuration tool to create and delete tap devices - +o uml_net - Setuid binary for automatic tap device configuration + o uml_net - Setuid binary for automatic tap device configuration - +o uml_switch - User-space virtual switch required for daemon + o uml_switch - User-space virtual switch required for daemon transport The uml_utilities tree is compiled with: @@ -423,11 +423,11 @@ - 33.. RRuunnnniinngg UUMMLL aanndd llooggggiinngg iinn + 3. Running UML and logging in - 33..11.. RRuunnnniinngg UUMMLL + 3.1. Running UML It runs on 2.2.15 or later, and all 2.4 kernels. @@ -454,7 +454,7 @@ - 33..22.. LLooggggiinngg iinn + 3.2. Logging in @@ -468,7 +468,7 @@ There are a couple of other ways to log in: - +o On a virtual console + o On a virtual console @@ -480,7 +480,7 @@ - +o Over the serial line + o Over the serial line In the boot output, find a line that looks like: @@ -503,7 +503,7 @@ - +o Over the net + o Over the net If the network is running, then you can telnet to the virtual @@ -514,13 +514,13 @@ down and the process will exit. - 33..33.. EExxaammpplleess + 3.3. Examples Here are some examples of UML in action: - +o A login session <http://user-mode-linux.sourceforge.net/login.html> + o A login session <http://user-mode-linux.sourceforge.net/login.html> - +o A virtual network <http://user-mode-linux.sourceforge.net/net.html> + o A virtual network <http://user-mode-linux.sourceforge.net/net.html> @@ -528,12 +528,12 @@ - 44.. UUMMLL oonn 22GG//22GG hhoossttss + 4. UML on 2G/2G hosts - 44..11.. IInnttrroodduuccttiioonn + 4.1. Introduction Most Linux machines are configured so that the kernel occupies the @@ -546,7 +546,7 @@ - 44..22.. TThhee pprroobblleemm + 4.2. The problem The prebuilt UML binaries on this site will not run on 2G/2G hosts @@ -558,7 +558,7 @@ - 44..33.. TThhee ssoolluuttiioonn + 4.3. The solution The fix for this is to rebuild UML from source after enabling @@ -576,7 +576,7 @@ - 55.. SSeettttiinngg uupp sseerriiaall lliinneess aanndd ccoonnssoolleess + 5. Setting up serial lines and consoles It is possible to attach UML serial lines and consoles to many types @@ -586,12 +586,12 @@ You can attach them to host ptys, ttys, file descriptors, and ports. This allows you to do things like - +o have a UML console appear on an unused host console, + o have a UML console appear on an unused host console, - +o hook two virtual machines together by having one attach to a pty + o hook two virtual machines together by having one attach to a pty and having the other attach to the corresponding tty - +o make a virtual machine accessible from the net by attaching a + o make a virtual machine accessible from the net by attaching a console to a port on the host. @@ -599,7 +599,7 @@ - 55..11.. SSppeecciiffyyiinngg tthhee ddeevviiccee + 5.1. Specifying the device Devices are specified with "con" or "ssl" (console or serial line, respectively), optionally with a device number if you are talking @@ -626,13 +626,13 @@ - 55..22.. SSppeecciiffyyiinngg tthhee cchhaannnneell + 5.2. Specifying the channel There are a number of different types of channels to attach a UML device to, each with a different way of specifying exactly what to attach to. - +o pseudo-terminals - device=pty pts terminals - device=pts + o pseudo-terminals - device=pty pts terminals - device=pts This will cause UML to allocate a free host pseudo-terminal for the @@ -640,20 +640,20 @@ log. You access it by attaching a terminal program to the corresponding tty: - +o screen /dev/pts/n + o screen /dev/pts/n - +o screen /dev/ttyxx + o screen /dev/ttyxx - +o minicom -o -p /dev/ttyxx - minicom seems not able to handle pts + o minicom -o -p /dev/ttyxx - minicom seems not able to handle pts devices - +o kermit - start it up, 'open' the device, then 'connect' + o kermit - start it up, 'open' the device, then 'connect' - +o terminals - device=tty:tty device file + o terminals - device=tty:tty device file This will make UML attach the device to the specified tty (i.e @@ -672,7 +672,7 @@ - +o xterms - device=xterm + o xterms - device=xterm UML will run an xterm and the device will be attached to it. @@ -681,7 +681,7 @@ - +o Port - device=port:port number + o Port - device=port:port number This will attach the UML devices to the specified host port. @@ -725,7 +725,7 @@ - +o already-existing file descriptors - device=file descriptor + o already-existing file descriptors - device=file descriptor If you set up a file descriptor on the UML command line, you can @@ -743,7 +743,7 @@ - +o Nothing - device=null + o Nothing - device=null This allows the device to be opened, in contrast to 'none', but @@ -754,7 +754,7 @@ - +o None - device=none + o None - device=none This causes the device to disappear. @@ -770,7 +770,7 @@ - will cause serial line 3 to accept input on the host's /dev/tty3 and + will cause serial line 3 to accept input on the host's /dev/tty2 and display output on an xterm. That's a silly example - the most common use of this syntax is to reattach the main console to stdin and stdout as shown above. @@ -785,7 +785,7 @@ - 55..33.. EExxaammpplleess + 5.3. Examples There are a number of interesting things you can do with this capability. @@ -838,7 +838,7 @@ prompt of the other virtual machine. - 66.. SSeettttiinngg uupp tthhee nneettwwoorrkk + 6. Setting up the network @@ -858,19 +858,19 @@ There are currently five transport types available for a UML virtual machine to exchange packets with other hosts: - +o ethertap + o ethertap - +o TUN/TAP + o TUN/TAP - +o Multicast + o Multicast - +o a switch daemon + o a switch daemon - +o slip + o slip - +o slirp + o slirp - +o pcap + o pcap The TUN/TAP, ethertap, slip, and slirp transports allow a UML instance to exchange packets with the host. They may be directed @@ -893,28 +893,28 @@ With so many host transports, which one should you use? Here's when you should use each one: - +o ethertap - if you want access to the host networking and it is + o ethertap - if you want access to the host networking and it is running 2.2 - +o TUN/TAP - if you want access to the host networking and it is + o TUN/TAP - if you want access to the host networking and it is running 2.4. Also, the TUN/TAP transport is able to use a preconfigured device, allowing it to avoid using the setuid uml_net helper, which is a security advantage. - +o Multicast - if you want a purely virtual network and you don't want + o Multicast - if you want a purely virtual network and you don't want to set up anything but the UML - +o a switch daemon - if you want a purely virtual network and you + o a switch daemon - if you want a purely virtual network and you don't mind running the daemon in order to get somewhat better performance - +o slip - there is no particular reason to run the slip backend unless + o slip - there is no particular reason to run the slip backend unless ethertap and TUN/TAP are just not available for some reason - +o slirp - if you don't have root access on the host to setup + o slirp - if you don't have root access on the host to setup networking, or if you don't want to allocate an IP to your UML - +o pcap - not much use for actual network connectivity, but great for + o pcap - not much use for actual network connectivity, but great for monitoring traffic on the host Ethertap is available on 2.4 and works fine. TUN/TAP is preferred @@ -926,7 +926,7 @@ exploit the helper's root privileges. - 66..11.. GGeenneerraall sseettuupp + 6.1. General setup First, you must have the virtual network enabled in your UML. If are running a prebuilt kernel from this site, everything is already @@ -995,7 +995,7 @@ - 66..22.. UUsseerrssppaaccee ddaaeemmoonnss + 6.2. Userspace daemons You will likely need the setuid helper, or the switch daemon, or both. They are both installed with the RPM and deb, so if you've installed @@ -1011,7 +1011,7 @@ - 66..33.. SSppeecciiffyyiinngg eetthheerrnneett aaddddrreesssseess + 6.3. Specifying ethernet addresses Below, you will see that the TUN/TAP, ethertap, and daemon interfaces allow you to specify hardware addresses for the virtual ethernet @@ -1023,11 +1023,11 @@ sufficient to guarantee a unique hardware address for the device. A couple of exceptions are: - +o Another set of virtual ethernet devices are on the same network and + o Another set of virtual ethernet devices are on the same network and they are assigned hardware addresses using a different scheme which may conflict with the UML IP address-based scheme - +o You aren't going to use the device for IP networking, so you don't + o You aren't going to use the device for IP networking, so you don't assign the device an IP address If you let the driver provide the hardware address, you should make @@ -1049,7 +1049,7 @@ - 66..44.. UUMMLL iinntteerrffaaccee sseettuupp + 6.4. UML interface setup Once the network devices have been described on the command line, you should boot UML and log in. @@ -1131,7 +1131,7 @@ - 66..55.. MMuullttiiccaasstt + 6.5. Multicast The simplest way to set up a virtual network between multiple UMLs is to use the mcast transport. This was written by Harald Welte and is @@ -1194,7 +1194,7 @@ - 66..66.. TTUUNN//TTAAPP wwiitthh tthhee uummll__nneett hheellppeerr + 6.6. TUN/TAP with the uml_net helper TUN/TAP is the preferred mechanism on 2.4 to exchange packets with the host. The TUN/TAP backend has been in UML since 2.4.9-3um. @@ -1247,10 +1247,10 @@ There are a couple potential problems with running the TUN/TAP transport on a 2.4 host kernel - +o TUN/TAP seems not to work on 2.4.3 and earlier. Upgrade the host + o TUN/TAP seems not to work on 2.4.3 and earlier. Upgrade the host kernel or use the ethertap transport. - +o With an upgraded kernel, TUN/TAP may fail with + o With an upgraded kernel, TUN/TAP may fail with File descriptor in bad state @@ -1269,7 +1269,7 @@ - 66..77.. TTUUNN//TTAAPP wwiitthh aa pprreeccoonnffiigguurreedd ttaapp ddeevviiccee + 6.7. TUN/TAP with a preconfigured tap device If you prefer not to have UML use uml_net (which is somewhat insecure), with UML 2.4.17-11, you can set up a TUN/TAP device @@ -1277,7 +1277,7 @@ there is no need for root assistance. Setting up the device is done as follows: - +o Create the device with tunctl (available from the UML utilities + o Create the device with tunctl (available from the UML utilities tarball) @@ -1291,7 +1291,7 @@ where uid is the user id or username that UML will be run as. This will tell you what device was created. - +o Configure the device IP (change IP addresses and device name to + o Configure the device IP (change IP addresses and device name to suit) @@ -1303,7 +1303,7 @@ - +o Set up routing and arping if desired - this is my recipe, there are + o Set up routing and arping if desired - this is my recipe, there are other ways of doing the same thing @@ -1338,7 +1338,7 @@ utility which reads the information from a config file and sets up devices at boot time. - +o Rather than using up two IPs and ARPing for one of them, you can + o Rather than using up two IPs and ARPing for one of them, you can also provide direct access to your LAN by the UML by using a bridge. @@ -1417,7 +1417,7 @@ Note that 'br0' should be setup using ifconfig with the existing IP address of eth0, as eth0 no longer has its own IP. - +o + o Also, the /dev/net/tun device must be writable by the user running @@ -1438,11 +1438,11 @@ devices and chgrp /dev/net/tun to that group with mode 664 or 660. - +o Once the device is set up, run UML with 'eth0=tuntap,device name' + o Once the device is set up, run UML with 'eth0=tuntap,device name' (i.e. 'eth0=tuntap,tap0') on the command line (or do it with the mconsole config command). - +o Bring the eth device up in UML and you're in business. + o Bring the eth device up in UML and you're in business. If you don't want that tap device any more, you can make it non- persistent with @@ -1465,7 +1465,7 @@ - 66..88.. EEtthheerrttaapp + 6.8. Ethertap Ethertap is the general mechanism on 2.2 for userspace processes to exchange packets with the kernel. @@ -1561,9 +1561,9 @@ - 66..99.. TThhee sswwiittcchh ddaaeemmoonn + 6.9. The switch daemon - NNoottee: This is the daemon formerly known as uml_router, but which was + Note: This is the daemon formerly known as uml_router, but which was renamed so the network weenies of the world would stop growling at me. @@ -1649,7 +1649,7 @@ - 66..1100.. SSlliipp + 6.10. Slip Slip is another, less general, mechanism for a process to communicate with the host networking. In contrast to the ethertap interface, @@ -1681,7 +1681,7 @@ - 66..1111.. SSlliirrpp + 6.11. Slirp slirp uses an external program, usually /usr/bin/slirp, to provide IP only networking connectivity through the host. This is similar to IP @@ -1737,7 +1737,7 @@ - 66..1122.. ppccaapp + 6.12. pcap The pcap transport is attached to a UML ethernet device on the command line or with uml_mconsole with the following syntax: @@ -1777,7 +1777,7 @@ - 66..1133.. SSeettttiinngg uupp tthhee hhoosstt yyoouurrsseellff + 6.13. Setting up the host yourself If you don't specify an address for the host side of the ethertap or slip device, UML won't do any setup on the host. So this is what is @@ -1785,7 +1785,7 @@ 192.168.0.251 and a UML-side IP of 192.168.0.250 - adjust to suit your own network): - +o The device needs to be configured with its IP address. Tap devices + o The device needs to be configured with its IP address. Tap devices are also configured with an mtu of 1484. Slip devices are configured with a point-to-point address pointing at the UML ip address. @@ -1805,7 +1805,7 @@ - +o If a tap device is being set up, a route is set to the UML IP. + o If a tap device is being set up, a route is set to the UML IP. UML# route add -host 192.168.0.250 gw 192.168.0.251 @@ -1814,7 +1814,7 @@ - +o To allow other hosts on your network to see the virtual machine, + o To allow other hosts on your network to see the virtual machine, proxy arp is set up for it. @@ -1824,7 +1824,7 @@ - +o Finally, the host is set up to route packets. + o Finally, the host is set up to route packets. host# echo 1 > /proc/sys/net/ipv4/ip_forward @@ -1838,12 +1838,12 @@ - 77.. SShhaarriinngg FFiilleessyysstteemmss bbeettwweeeenn VViirrttuuaall MMaacchhiinneess + 7. Sharing Filesystems between Virtual Machines - 77..11.. AA wwaarrnniinngg + 7.1. A warning Don't attempt to share filesystems simply by booting two UMLs from the same file. That's the same thing as booting two physical machines @@ -1851,7 +1851,7 @@ - 77..22.. UUssiinngg llaayyeerreedd bblloocckk ddeevviicceess + 7.2. Using layered block devices The way to share a filesystem between two virtual machines is to use the copy-on-write (COW) layering capability of the ubd block driver. @@ -1896,7 +1896,7 @@ - 77..33.. NNoottee!! + 7.3. Note! When checking the size of the COW file in order to see the gobs of space that you're saving, make sure you use 'ls -ls' to see the actual @@ -1926,7 +1926,7 @@ - 77..44.. AAnnootthheerr wwaarrnniinngg + 7.4. Another warning Once a filesystem is being used as a readonly backing file for a COW file, do not boot directly from it or modify it in any way. Doing so @@ -1952,7 +1952,7 @@ - 77..55.. uummll__mmoooo :: MMeerrggiinngg aa CCOOWW ffiillee wwiitthh iittss bbaacckkiinngg ffiillee + 7.5. uml_moo : Merging a COW file with its backing file Depending on how you use UML and COW devices, it may be advisable to merge the changes in the COW file into the backing file every once in @@ -2001,7 +2001,7 @@ - 88.. CCrreeaattiinngg ffiilleessyysstteemmss + 8. Creating filesystems You may want to create and mount new UML filesystems, either because @@ -2015,7 +2015,7 @@ should be easy to translate to the filesystem of your choice. - 88..11.. CCrreeaattee tthhee ffiilleessyysstteemm ffiillee + 8.1. Create the filesystem file dd is your friend. All you need to do is tell dd to create an empty file of the appropriate size. I usually make it sparse to save time @@ -2032,7 +2032,7 @@ - 88..22.. AAssssiiggnn tthhee ffiillee ttoo aa UUMMLL ddeevviiccee + 8.2. Assign the file to a UML device Add an argument like the following to the UML command line: @@ -2045,7 +2045,7 @@ - 88..33.. CCrreeaattiinngg aanndd mmoouunnttiinngg tthhee ffiilleessyysstteemm + 8.3. Creating and mounting the filesystem Make sure that the filesystem is available, either by being built into the kernel, or available as a module, then boot up UML and log in. If @@ -2096,7 +2096,7 @@ - 99.. HHoosstt ffiillee aacccceessss + 9. Host file access If you want to access files on the host machine from inside UML, you @@ -2112,7 +2112,7 @@ files contained in it just as you would on the host. - 99..11.. UUssiinngg hhoossttffss + 9.1. Using hostfs To begin with, make sure that hostfs is available inside the virtual machine with @@ -2151,7 +2151,7 @@ - 99..22.. hhoossttffss aass tthhee rroooott ffiilleessyysstteemm + 9.2. hostfs as the root filesystem It's possible to boot from a directory hierarchy on the host using hostfs rather than using the standard filesystem in a file. @@ -2194,20 +2194,20 @@ UML should then boot as it does normally. - 99..33.. BBuuiillddiinngg hhoossttffss + 9.3. Building hostfs If you need to build hostfs because it's not in your kernel, you have two choices: - +o Compiling hostfs into the kernel: + o Compiling hostfs into the kernel: Reconfigure the kernel and set the 'Host filesystem' option under - +o Compiling hostfs as a module: + o Compiling hostfs as a module: Reconfigure the kernel and set the 'Host filesystem' option under @@ -2228,7 +2228,7 @@ - 1100.. TThhee MMaannaaggeemmeenntt CCoonnssoollee + 10. The Management Console @@ -2240,15 +2240,15 @@ There are a number of things you can do with the mconsole interface: - +o get the kernel version + o get the kernel version - +o add and remove devices + o add and remove devices - +o halt or reboot the machine + o halt or reboot the machine - +o Send SysRq commands + o Send SysRq commands - +o Pause and resume the UML + o Pause and resume the UML You need the mconsole client (uml_mconsole) which is present in CVS @@ -2300,28 +2300,28 @@ You'll get a prompt, at which you can run one of these commands: - +o version + o version - +o halt + o halt - +o reboot + o reboot - +o config + o config - +o remove + o remove - +o sysrq + o sysrq - +o help + o help - +o cad + o cad - +o stop + o stop - +o go + o go - 1100..11.. vveerrssiioonn + 10.1. version This takes no arguments. It prints the UML version. @@ -2342,7 +2342,7 @@ - 1100..22.. hhaalltt aanndd rreebboooott + 10.2. halt and reboot These take no arguments. They shut the machine down immediately, with no syncing of disks and no clean shutdown of userspace. So, they are @@ -2357,7 +2357,7 @@ - 1100..33.. ccoonnffiigg + 10.3. config "config" adds a new device to the virtual machine. Currently the ubd and network drivers support this. It takes one argument, which is the @@ -2378,7 +2378,7 @@ - 1100..44.. rreemmoovvee + 10.4. remove "remove" deletes a device from the system. Its argument is just the name of the device to be removed. The device must be idle in whatever @@ -2397,7 +2397,7 @@ - 1100..55.. ssyyssrrqq + 10.5. sysrq This takes one argument, which is a single letter. It calls the generic kernel's SysRq driver, which does whatever is called for by @@ -2407,14 +2407,14 @@ - 1100..66.. hheellpp + 10.6. help "help" returns a string listing the valid commands and what each one does. - 1100..77.. ccaadd + 10.7. cad This invokes the Ctl-Alt-Del action on init. What exactly this ends up doing is up to /etc/inittab. Normally, it reboots the machine. @@ -2432,7 +2432,7 @@ - 1100..88.. ssttoopp + 10.8. stop This puts the UML in a loop reading mconsole requests until a 'go' mconsole command is received. This is very useful for making backups @@ -2448,7 +2448,7 @@ - 1100..99.. ggoo + 10.9. go This resumes a UML after being paused by a 'stop' command. Note that when the UML has resumed, TCP connections may have timed out and if @@ -2462,10 +2462,10 @@ - 1111.. KKeerrnneell ddeebbuuggggiinngg + 11. Kernel debugging - NNoottee:: The interface that makes debugging, as described here, possible + Note: The interface that makes debugging, as described here, possible is present in 2.4.0-test6 kernels and later. @@ -2485,7 +2485,7 @@ - 1111..11.. SSttaarrttiinngg tthhee kkeerrnneell uunnddeerr ggddbb + 11.1. Starting the kernel under gdb You can have the kernel running under the control of gdb from the beginning by putting 'debug' on the command line. You will get an @@ -2498,7 +2498,7 @@ There is a transcript of a debugging session here <debug- session.html> , with breakpoints being set in the scheduler and in an interrupt handler. - 1111..22.. EExxaammiinniinngg sslleeeeppiinngg pprroocceesssseess + 11.2. Examining sleeping processes Not every bug is evident in the currently running process. Sometimes, processes hang in the kernel when they shouldn't because they've @@ -2516,7 +2516,7 @@ Now what you do is this: - +o detach from the current thread + o detach from the current thread (UML gdb) det @@ -2525,7 +2525,7 @@ - +o attach to the thread you are interested in + o attach to the thread you are interested in (UML gdb) att <host pid> @@ -2534,7 +2534,7 @@ - +o look at its stack and anything else of interest + o look at its stack and anything else of interest (UML gdb) bt @@ -2545,7 +2545,7 @@ Note that you can't do anything at this point that requires that a process execute, e.g. calling a function - +o when you're done looking at that process, reattach to the current + o when you're done looking at that process, reattach to the current thread and continue it @@ -2569,12 +2569,12 @@ - 1111..33.. RRuunnnniinngg dddddd oonn UUMMLL + 11.3. Running ddd on UML ddd works on UML, but requires a special kludge. The process goes like this: - +o Start ddd + o Start ddd host% ddd linux @@ -2583,14 +2583,14 @@ - +o With ps, get the pid of the gdb that ddd started. You can ask the + o With ps, get the pid of the gdb that ddd started. You can ask the gdb to tell you, but for some reason that confuses things and causes a hang. - +o run UML with 'debug=parent gdb-pid=<pid>' added to the command line + o run UML with 'debug=parent gdb-pid=<pid>' added to the command line - it will just sit there after you hit return - +o type 'att 1' to the ddd gdb and you will see something like + o type 'att 1' to the ddd gdb and you will see something like 0xa013dc51 in __kill () @@ -2602,12 +2602,12 @@ - +o At this point, type 'c', UML will boot up, and you can use ddd just + o At this point, type 'c', UML will boot up, and you can use ddd just as you do on any other process. - 1111..44.. DDeebbuuggggiinngg mmoodduulleess + 11.4. Debugging modules gdb has support for debugging code which is dynamically loaded into the process. This support is what is needed to debug kernel modules @@ -2823,7 +2823,7 @@ - 1111..55.. AAttttaacchhiinngg ggddbb ttoo tthhee kkeerrnneell + 11.5. Attaching gdb to the kernel If you don't have the kernel running under gdb, you can attach gdb to it later by sending the tracing thread a SIGUSR1. The first line of @@ -2857,7 +2857,7 @@ - 1111..66.. UUssiinngg aalltteerrnnaattee ddeebbuuggggeerrss + 11.6. Using alternate debuggers UML has support for attaching to an already running debugger rather than starting gdb itself. This is present in CVS as of 17 Apr 2001. @@ -2886,7 +2886,7 @@ An example of an alternate debugger is strace. You can strace the actual kernel as follows: - +o Run the following in a shell + o Run the following in a shell host% @@ -2894,10 +2894,10 @@ - +o Run UML with 'debug' and 'gdb-pid=<pid>' with the pid printed out + o Run UML with 'debug' and 'gdb-pid=<pid>' with the pid printed out by the previous command - +o Hit return in the shell, and UML will start running, and strace + o Hit return in the shell, and UML will start running, and strace output will start accumulating in the output file. Note that this is different from running @@ -2917,9 +2917,9 @@ - 1122.. KKeerrnneell ddeebbuuggggiinngg eexxaammpplleess + 12. Kernel debugging examples - 1122..11.. TThhee ccaassee ooff tthhee hhuunngg ffsscckk + 12.1. The case of the hung fsck When booting up the kernel, fsck failed, and dropped me into a shell to fix things up. I ran fsck -y, which hung: @@ -3154,9 +3154,9 @@ The interesting things here are : - +o There are two segfaults on this stack (frames 9 and 14) + o There are two segfaults on this stack (frames 9 and 14) - +o The first faulting address (frame 11) is 0x50000800 + o The first faulting address (frame 11) is 0x50000800 (gdb) p (void *)1342179328 $16 = (void *) 0x50000800 @@ -3399,7 +3399,7 @@ on will be somewhat clearer. - 1122..22.. EEppiissooddee 22:: TThhee ccaassee ooff tthhee hhuunngg ffsscckk + 12.2. Episode 2: The case of the hung fsck After setting a trap in the SEGV handler for accesses to the signal thread's stack, I reran the kernel. @@ -3788,12 +3788,12 @@ - 1133.. WWhhaatt ttoo ddoo wwhheenn UUMMLL ddooeessnn''tt wwoorrkk + 13. What to do when UML doesn't work - 1133..11.. SSttrraannggee ccoommppiillaattiioonn eerrrroorrss wwhheenn yyoouu bbuuiilldd ffrroomm ssoouurrccee + 13.1. Strange compilation errors when you build from source As of test11, it is necessary to have "ARCH=um" in the environment or on the make command line for all steps in building UML, including @@ -3824,8 +3824,8 @@ - 1133..33.. AA vvaarriieettyy ooff ppaanniiccss aanndd hhaannggss wwiitthh //ttmmpp oonn aa rreeiisseerrffss ffiilleessyyss-- - tteemm + 13.3. A variety of panics and hangs with /tmp on a reiserfs filesys- + tem I saw this on reiserfs 3.5.21 and it seems to be fixed in 3.5.27. Panics preceded by @@ -3842,8 +3842,8 @@ - 1133..44.. TThhee ccoommppiillee ffaaiillss wwiitthh eerrrroorrss aabboouutt ccoonnfflliiccttiinngg ttyyppeess ffoorr - ''ooppeenn'',, ''dduupp'',, aanndd ''wwaaiittppiidd'' + 13.4. The compile fails with errors about conflicting types for + 'open', 'dup', and 'waitpid' This happens when you build in /usr/src/linux. The UML build makes the include/asm link point to include/asm-um. /usr/include/asm points @@ -3854,14 +3854,14 @@ - 1133..55.. UUMMLL ddooeessnn''tt wwoorrkk wwhheenn //ttmmpp iiss aann NNFFSS ffiilleessyysstteemm + 13.5. UML doesn't work when /tmp is an NFS filesystem This seems to be a similar situation with the ReiserFS problem above. Some versions of NFS seems not to handle mmap correctly, which UML depends on. The workaround is have /tmp be a non-NFS directory. - 1133..66.. UUMMLL hhaannggss oonn bboooott wwhheenn ccoommppiilleedd wwiitthh ggpprrooff ssuuppppoorrtt + 13.6. UML hangs on boot when compiled with gprof support If you build UML with gprof support and, early in the boot, it does this @@ -3878,7 +3878,7 @@ - 1133..77.. ssyyssllooggdd ddiieess wwiitthh aa SSIIGGTTEERRMM oonn ssttaarrttuupp + 13.7. syslogd dies with a SIGTERM on startup The exact boot error depends on the distribution that you're booting, but Debian produces this: @@ -3897,17 +3897,17 @@ - 1133..88.. TTUUNN//TTAAPP nneettwwoorrkkiinngg ddooeessnn''tt wwoorrkk oonn aa 22..44 hhoosstt + 13.8. TUN/TAP networking doesn't work on a 2.4 host There are a couple of problems which were <http://www.geocrawler.com/lists/3/SourceForge/597/0/> name="pointed out"> by Tim Robinson <timro at trkr dot net> - +o It doesn't work on hosts running 2.4.7 (or thereabouts) or earlier. + o It doesn't work on hosts running 2.4.7 (or thereabouts) or earlier. The fix is to upgrade to something more recent and then read the next item. - +o If you see + o If you see File descriptor in bad state @@ -3921,8 +3921,8 @@ - 1133..99.. YYoouu ccaann nneettwwoorrkk ttoo tthhee hhoosstt bbuutt nnoott ttoo ootthheerr mmaacchhiinneess oonn tthhee - nneett + 13.9. You can network to the host but not to other machines on the + net If you can connect to the host, and the host can connect to UML, but you cannot connect to any other machines, then you may need to enable @@ -3972,7 +3972,7 @@ - 1133..1100.. II hhaavvee nnoo rroooott aanndd II wwaanntt ttoo ssccrreeaamm + 13.10. I have no root and I want to scream Thanks to Birgit Wahlich for telling me about this strange one. It turns out that there's a limit of six environment variables on the @@ -3987,7 +3987,7 @@ - 1133..1111.. UUMMLL bbuuiilldd ccoonnfflliicctt bbeettwweeeenn ppttrraaccee..hh aanndd uuccoonntteexxtt..hh + 13.11. UML build conflict between ptrace.h and ucontext.h On some older systems, /usr/include/asm/ptrace.h and /usr/include/sys/ucontext.h define the same names. So, when they're @@ -4007,7 +4007,7 @@ - 1133..1122.. TThhee UUMMLL BBooggooMMiippss iiss eexxaaccttllyy hhaallff tthhee hhoosstt''ss BBooggooMMiippss + 13.12. The UML BogoMips is exactly half the host's BogoMips On i386 kernels, there are two ways of running the loop that is used to calculate the BogoMips rating, using the TSC if it's there or using @@ -4019,7 +4019,7 @@ - 1133..1133.. WWhheenn yyoouu rruunn UUMMLL,, iitt iimmmmeeddiiaatteellyy sseeggffaauullttss + 13.13. When you run UML, it immediately segfaults If the host is configured with the 2G/2G address space split, that's why. See ``UML on 2G/2G hosts'' for the details on getting UML to @@ -4027,7 +4027,7 @@ - 1133..1144.. xxtteerrmmss aappppeeaarr,, tthheenn iimmmmeeddiiaatteellyy ddiissaappppeeaarr + 13.14. xterms appear, then immediately disappear If you're running an up to date kernel with an old release of uml_utilities, the port-helper program will not work properly, so @@ -4039,7 +4039,7 @@ - 1133..1155.. AAnnyy ootthheerr ppaanniicc,, hhaanngg,, oorr ssttrraannggee bbeehhaavviioorr + 13.15. Any other panic, hang, or strange behavior If you're seeing truly strange behavior, such as hangs or panics that happen in random places, or you try running the debugger to see what's @@ -4059,7 +4059,7 @@ If you want to be super-helpful, read ``Diagnosing Problems'' and follow the instructions contained therein. - 1144.. DDiiaaggnnoossiinngg PPrroobblleemmss + 14. Diagnosing Problems If you get UML to crash, hang, or otherwise misbehave, you should @@ -4078,7 +4078,7 @@ ``Kernel debugging'' UML first. - 1144..11.. CCaassee 11 :: NNoorrmmaall kkeerrnneell ppaanniiccss + 14.1. Case 1 : Normal kernel panics The most common case is for a normal thread to panic. To debug this, you will need to run it under the debugger (add 'debug' to the command @@ -4128,7 +4128,7 @@ to get that information from the faulting ip. - 1144..22.. CCaassee 22 :: TTrraacciinngg tthhrreeaadd ppaanniiccss + 14.2. Case 2 : Tracing thread panics The less common and more painful case is when the tracing thread panics. In this case, the kernel debugger will be useless because it @@ -4161,7 +4161,7 @@ backtrace in and wait for our crack debugging team to fix the problem. - 1144..33.. CCaassee 33 :: TTrraacciinngg tthhrreeaadd ppaanniiccss ccaauusseedd bbyy ootthheerr tthhrreeaaddss + 14.3. Case 3 : Tracing thread panics caused by other threads However, there are cases where the misbehavior of another thread caused the problem. The most common panic of this type is: @@ -4227,7 +4227,7 @@ - 1144..44.. CCaassee 44 :: HHaannggss + 14.4. Case 4 : Hangs Hangs seem to be fairly rare, but they sometimes happen. When a hang happens, we need a backtrace from the offending process. Run the @@ -4257,7 +4257,7 @@ - 1155.. TThhaannkkss + 15. Thanks A number of people have helped this project in various ways, and this @@ -4274,20 +4274,20 @@ bookkeeping lapses and I forget about contributions. - 1155..11.. CCooddee aanndd DDooccuummeennttaattiioonn + 15.1. Code and Documentation Rusty Russell <rusty at linuxcare.com.au> - - +o wrote the HOWTO <http://user-mode- + o wrote the HOWTO <http://user-mode- linux.sourceforge.net/UserModeLinux-HOWTO.html> - +o prodded me into making this project official and putting it on + o prodded me into making this project official and putting it on SourceForge - +o came up with the way cool UML logo <http://user-mode- + o came up with the way cool UML logo <http://user-mode- linux.sourceforge.net/uml-small.png> - +o redid the config process + o redid the config process Peter Moulder <reiter at netspace.net.au> - Fixed my config and build @@ -4296,18 +4296,18 @@ Bill Stearns <wstearns at pobox.com> - - +o HOWTO updates + o HOWTO updates - +o lots of bug reports + o lots of bug reports - +o lots of testing + o lots of testing - +o dedicated a box (uml.ists.dartmouth.edu) to support UML development + o dedicated a box (uml.ists.dartmouth.edu) to support UML development - +o wrote the mkrootfs script, which allows bootable filesystems of + o wrote the mkrootfs script, which allows bootable filesystems of RPM-based distributions to be cranked out - +o cranked out a large number of filesystems with said script + o cranked out a large number of filesystems with said script Jim Leu <jleu at mindspring.com> - Wrote the virtual ethernet driver @@ -4375,176 +4375,176 @@ David Coulson <http://davidcoulson.net> - - +o Set up the usermodelinux.org <http://usermodelinux.org> site, + o Set up the usermodelinux.org <http://usermodelinux.org> site, which is a great way of keeping the UML user community on top of UML goings-on. - +o Site documentation and updates + o Site documentation and updates - +o Nifty little UML management daemon UMLd + o Nifty little UML management daemon UMLd <http://uml.openconsultancy.com/umld/> - +o Lots of testing and bug reports + o Lots of testing and bug reports - 1155..22.. FFlluusshhiinngg oouutt bbuuggss + 15.2. Flushing out bugs - +o Yuri Pudgorodsky + o Yuri Pudgorodsky - +o Gerald Britton + o Gerald Britton - +o Ian Wehrman + o Ian Wehrman - +o Gord Lamb + o Gord Lamb - +o Eugene Koontz + o Eugene Koontz - +o John H. Hartman + o John H. Hartman - +o Anders Karlsson + o Anders Karlsson - +o Daniel Phillips + o Daniel Phillips - +o John Fremlin + o John Fremlin - +o Rainer Burgstaller + o Rainer Burgstaller - +o James Stevenson + o James Stevenson - +o Matt Clay + o Matt Clay - +o Cliff Jefferies + o Cliff Jefferies - +o Geoff Hoff + o Geoff Hoff - +o Lennert Buytenhek + o Lennert Buytenhek - +o Al Viro + o Al Viro - +o Frank Klingenhoefer + o Frank Klingenhoefer - +o Livio Baldini Soares + o Livio Baldini Soares - +o Jon Burgess + o Jon Burgess - +o Petru Paler + o Petru Paler - +o Paul + o Paul - +o Chris Reahard + o Chris Reahard - +o Sverker Nilsson + o Sverker Nilsson - +o Gong Su + o Gong Su - +o johan verrept + o johan verrept - +o Bjorn Eriksson + o Bjorn Eriksson - +o Lorenzo Allegrucci + o Lorenzo Allegrucci - +o Muli Ben-Yehuda + o Muli Ben-Yehuda - +o David Mansfield + o David Mansfield - +o Howard Goff + o Howard Goff - +o Mike Anderson + o Mike Anderson - +o John Byrne + o John Byrne - +o Sapan J. Batia + o Sapan J. Batia - +o Iris Huang + o Iris Huang - +o Jan Hudec + o Jan Hudec - +o Voluspa + o Voluspa - 1155..33.. BBuugglleettss aanndd cclleeaann--uuppss + 15.3. Buglets and clean-ups - +o Dave Zarzycki + o Dave Zarzycki - +o Adam Lazur + o Adam Lazur - +o Boria Feigin + o Boria Feigin - +o Brian J. Murrell + o Brian J. Murrell - +o JS + o JS - +o Roman Zippel + o Roman Zippel - +o Wil Cooley + o Wil Cooley - +o Ayelet Shemesh + o Ayelet Shemesh - +o Will Dyson + o Will Dyson - +o Sverker Nilsson + o Sverker Nilsson - +o dvorak + o dvorak - +o v.naga srinivas + o v.naga srinivas - +o Shlomi Fish + o Shlomi Fish - +o Roger Binns + o Roger Binns - +o johan verrept + o johan verrept - +o MrChuoi + o MrChuoi - +o Peter Cleve + o Peter Cleve - +o Vincent Guffens + o Vincent Guffens - +o Nathan Scott + o Nathan Scott - +o Patrick Caulfield + o Patrick Caulfield - +o jbearce + o jbearce - +o Catalin Marinas + o Catalin Marinas - +o Shane Spencer + o Shane Spencer - +o Zou Min + o Zou Min - +o Ryan Boder + o Ryan Boder - +o Lorenzo Colitti + o Lorenzo Colitti - +o Gwendal Grignou + o Gwendal Grignou - +o Andre' Breiler + o Andre' Breiler - +o Tsutomu Yasuda + o Tsutomu Yasuda - 1155..44.. CCaassee SSttuuddiieess + 15.4. Case Studies - +o Jon Wright + o Jon Wright - +o William McEwan + o William McEwan - +o Michael Richardson + o Michael Richardson - 1155..55.. OOtthheerr ccoonnttrriibbuuttiioonnss + 15.5. Other contributions Bill Carr <Bill.Carr at compaq.com> made the Red Hat mkrootfs script diff --git a/Documentation/virtual/virtio-spec.txt b/Documentation/virtual/virtio-spec.txt new file mode 100644 index 0000000..a350ae1 --- /dev/null +++ b/Documentation/virtual/virtio-spec.txt @@ -0,0 +1,2200 @@ +[Generated file: see http://ozlabs.org/~rusty/virtio-spec/] +Virtio PCI Card Specification +v0.9.1 DRAFT +- + +Rusty Russell <rusty@rustcorp.com.au>IBM Corporation (Editor) + +2011 August 1. + +Purpose and Description + +This document describes the specifications of the “virtio” family +of PCI[LaTeX Command: nomenclature] devices. These are devices +are found in virtual environments[LaTeX Command: nomenclature], +yet by design they are not all that different from physical PCI +devices, and this document treats them as such. This allows the +guest to use standard PCI drivers and discovery mechanisms. + +The purpose of virtio and this specification is that virtual +environments and guests should have a straightforward, efficient, +standard and extensible mechanism for virtual devices, rather +than boutique per-environment or per-OS mechanisms. + + Straightforward: Virtio PCI devices use normal PCI mechanisms + of interrupts and DMA which should be familiar to any device + driver author. There is no exotic page-flipping or COW + mechanism: it's just a PCI device.[footnote: +This lack of page-sharing implies that the implementation of the +device (e.g. the hypervisor or host) needs full access to the +guest memory. Communication with untrusted parties (i.e. +inter-guest communication) requires copying. +] + + Efficient: Virtio PCI devices consist of rings of descriptors + for input and output, which are neatly separated to avoid cache + effects from both guest and device writing to the same cache + lines. + + Standard: Virtio PCI makes no assumptions about the environment + in which it operates, beyond supporting PCI. In fact the virtio + devices specified in the appendices do not require PCI at all: + they have been implemented on non-PCI buses.[footnote: +The Linux implementation further separates the PCI virtio code +from the specific virtio drivers: these drivers are shared with +the non-PCI implementations (currently lguest and S/390). +] + + Extensible: Virtio PCI devices contain feature bits which are + acknowledged by the guest operating system during device setup. + This allows forwards and backwards compatibility: the device + offers all the features it knows about, and the driver + acknowledges those it understands and wishes to use. + + Virtqueues + +The mechanism for bulk data transport on virtio PCI devices is +pretentiously called a virtqueue. Each device can have zero or +more virtqueues: for example, the network device has one for +transmit and one for receive. + +Each virtqueue occupies two or more physically-contiguous pages +(defined, for the purposes of this specification, as 4096 bytes), +and consists of three parts: + + ++-------------------+-----------------------------------+-----------+ +| Descriptor Table | Available Ring (padding) | Used Ring | ++-------------------+-----------------------------------+-----------+ + + +When the driver wants to send buffers to the device, it puts them +in one or more slots in the descriptor table, and writes the +descriptor indices into the available ring. It then notifies the +device. When the device has finished with the buffers, it writes +the descriptors into the used ring, and sends an interrupt. + +Specification + + PCI Discovery + +Any PCI device with Vendor ID 0x1AF4, and Device ID 0x1000 +through 0x103F inclusive is a virtio device[footnote: +The actual value within this range is ignored +]. The device must also have a Revision ID of 0 to match this +specification. + +The Subsystem Device ID indicates which virtio device is +supported by the device. The Subsystem Vendor ID should reflect +the PCI Vendor ID of the environment (it's currently only used +for informational purposes by the guest). + + ++----------------------+--------------------+---------------+ +| Subsystem Device ID | Virtio Device | Specification | ++----------------------+--------------------+---------------+ ++----------------------+--------------------+---------------+ +| 1 | network card | Appendix C | ++----------------------+--------------------+---------------+ +| 2 | block device | Appendix D | ++----------------------+--------------------+---------------+ +| 3 | console | Appendix E | ++----------------------+--------------------+---------------+ +| 4 | entropy source | Appendix F | ++----------------------+--------------------+---------------+ +| 5 | memory ballooning | Appendix G | ++----------------------+--------------------+---------------+ +| 6 | ioMemory | - | ++----------------------+--------------------+---------------+ +| 9 | 9P transport | - | ++----------------------+--------------------+---------------+ + + + Device Configuration + +To configure the device, we use the first I/O region of the PCI +device. This contains a virtio header followed by a +device-specific region. + +There may be different widths of accesses to the I/O region; the “ +natural” access method for each field in the virtio header must +be used (i.e. 32-bit accesses for 32-bit fields, etc), but the +device-specific region can be accessed using any width accesses, +and should obtain the same results. + +Note that this is possible because while the virtio header is PCI +(i.e. little) endian, the device-specific region is encoded in +the native endian of the guest (where such distinction is +applicable). + + Device Initialization Sequence + +We start with an overview of device initialization, then expand +on the details of the device and how each step is preformed. + + Reset the device. This is not required on initial start up. + + The ACKNOWLEDGE status bit is set: we have noticed the device. + + The DRIVER status bit is set: we know how to drive the device. + + Device-specific setup, including reading the Device Feature + Bits, discovery of virtqueues for the device, optional MSI-X + setup, and reading and possibly writing the virtio + configuration space. + + The subset of Device Feature Bits understood by the driver is + written to the device. + + The DRIVER_OK status bit is set. + + The device can now be used (ie. buffers added to the + virtqueues)[footnote: +Historically, drivers have used the device before steps 5 and 6. +This is only allowed if the driver does not use any features +which would alter this early use of the device. +] + +If any of these steps go irrecoverably wrong, the guest should +set the FAILED status bit to indicate that it has given up on the +device (it can reset the device later to restart if desired). + +We now cover the fields required for general setup in detail. + + Virtio Header + +The virtio header looks as follows: + + ++------------++---------------------+---------------------+----------+--------+---------+---------+---------+--------+ +| Bits || 32 | 32 | 32 | 16 | 16 | 16 | 8 | 8 | ++------------++---------------------+---------------------+----------+--------+---------+---------+---------+--------+ +| Read/Write || R | R+W | R+W | R | R+W | R+W | R+W | R | ++------------++---------------------+---------------------+----------+--------+---------+---------+---------+--------+ +| Purpose || Device | Guest | Queue | Queue | Queue | Queue | Device | ISR | +| || Features bits 0:31 | Features bits 0:31 | Address | Size | Select | Notify | Status | Status | ++------------++---------------------+---------------------+----------+--------+---------+---------+---------+--------+ + + +If MSI-X is enabled for the device, two additional fields +immediately follow this header: + + ++------------++----------------+--------+ +| Bits || 16 | 16 | + +----------------+--------+ ++------------++----------------+--------+ +| Read/Write || R+W | R+W | ++------------++----------------+--------+ +| Purpose || Configuration | Queue | +| (MSI-X) || Vector | Vector | ++------------++----------------+--------+ + + +Finally, if feature bits (VIRTIO_F_FEATURES_HI) this is +immediately followed by two additional fields: + + ++------------++----------------------+---------------------- +| Bits || 32 | 32 ++------------++----------------------+---------------------- +| Read/Write || R | R+W ++------------++----------------------+---------------------- +| Purpose || Device | Guest +| || Features bits 32:63 | Features bits 32:63 ++------------++----------------------+---------------------- + + +Immediately following these general headers, there may be +device-specific headers: + + ++------------++--------------------+ +| Bits || Device Specific | + +--------------------+ ++------------++--------------------+ +| Read/Write || Device Specific | ++------------++--------------------+ +| Purpose || Device Specific... | +| || | ++------------++--------------------+ + + + Device Status + +The Device Status field is updated by the guest to indicate its +progress. This provides a simple low-level diagnostic: it's most +useful to imagine them hooked up to traffic lights on the console +indicating the status of each device. + +The device can be reset by writing a 0 to this field, otherwise +at least one bit should be set: + + ACKNOWLEDGE (1) Indicates that the guest OS has found the + device and recognized it as a valid virtio device. + + DRIVER (2) Indicates that the guest OS knows how to drive the + device. Under Linux, drivers can be loadable modules so there + may be a significant (or infinite) delay before setting this + bit. + + DRIVER_OK (3) Indicates that the driver is set up and ready to + drive the device. + + FAILED (8) Indicates that something went wrong in the guest, + and it has given up on the device. This could be an internal + error, or the driver didn't like the device for some reason, or + even a fatal error during device operation. The device must be + reset before attempting to re-initialize. + + Feature Bits + +The least significant 31 bits of the first configuration field +indicates the features that the device supports (the high bit is +reserved, and will be used to indicate the presence of future +feature bits elsewhere). If more than 31 feature bits are +supported, the device indicates so by setting feature bit 31 (see +[cha:Reserved-Feature-Bits]). The bits are allocated as follows: + + 0 to 23 Feature bits for the specific device type + + 24 to 40 Feature bits reserved for extensions to the queue and + feature negotiation mechanisms + + 41 to 63 Feature bits reserved for future extensions + +For example, feature bit 0 for a network device (i.e. Subsystem +Device ID 1) indicates that the device supports checksumming of +packets. + +The feature bits are negotiated: the device lists all the +features it understands in the Device Features field, and the +guest writes the subset that it understands into the Guest +Features field. The only way to renegotiate is to reset the +device. + +In particular, new fields in the device configuration header are +indicated by offering a feature bit, so the guest can check +before accessing that part of the configuration space. + +This allows for forwards and backwards compatibility: if the +device is enhanced with a new feature bit, older guests will not +write that feature bit back to the Guest Features field and it +can go into backwards compatibility mode. Similarly, if a guest +is enhanced with a feature that the device doesn't support, it +will not see that feature bit in the Device Features field and +can go into backwards compatibility mode (or, for poor +implementations, set the FAILED Device Status bit). + +Access to feature bits 32 to 63 is enabled by Guest by setting +feature bit 31. If this bit is unset, Device must assume that all +feature bits > 31 are unset. + + Configuration/Queue Vectors + +When MSI-X capability is present and enabled in the device +(through standard PCI configuration space) 4 bytes at byte offset +20 are used to map configuration change and queue interrupts to +MSI-X vectors. In this case, the ISR Status field is unused, and +device specific configuration starts at byte offset 24 in virtio +header structure. When MSI-X capability is not enabled, device +specific configuration starts at byte offset 20 in virtio header. + +Writing a valid MSI-X Table entry number, 0 to 0x7FF, to one of +Configuration/Queue Vector registers, maps interrupts triggered +by the configuration change/selected queue events respectively to +the corresponding MSI-X vector. To disable interrupts for a +specific event type, unmap it by writing a special NO_VECTOR +value: + +/* Vector value used to disable MSI for queue */ + +#define VIRTIO_MSI_NO_VECTOR 0xffff + +Reading these registers returns vector mapped to a given event, +or NO_VECTOR if unmapped. All queue and configuration change +events are unmapped by default. + +Note that mapping an event to vector might require allocating +internal device resources, and might fail. Devices report such +failures by returning the NO_VECTOR value when the relevant +Vector field is read. After mapping an event to vector, the +driver must verify success by reading the Vector field value: on +success, the previously written value is returned, and on +failure, NO_VECTOR is returned. If a mapping failure is detected, +the driver can retry mapping with fewervectors, or disable MSI-X. + + Virtqueue Configuration + +As a device can have zero or more virtqueues for bulk data +transport (for example, the network driver has two), the driver +needs to configure them as part of the device-specific +configuration. + +This is done as follows, for each virtqueue a device has: + + Write the virtqueue index (first queue is 0) to the Queue + Select field. + + Read the virtqueue size from the Queue Size field, which is + always a power of 2. This controls how big the virtqueue is + (see below). If this field is 0, the virtqueue does not exist. + + Allocate and zero virtqueue in contiguous physical memory, on a + 4096 byte alignment. Write the physical address, divided by + 4096 to the Queue Address field.[footnote: +The 4096 is based on the x86 page size, but it's also large +enough to ensure that the separate parts of the virtqueue are on +separate cache lines. +] + + Optionally, if MSI-X capability is present and enabled on the + device, select a vector to use to request interrupts triggered + by virtqueue events. Write the MSI-X Table entry number + corresponding to this vector in Queue Vector field. Read the + Queue Vector field: on success, previously written value is + returned; on failure, NO_VECTOR value is returned. + +The Queue Size field controls the total number of bytes required +for the virtqueue according to the following formula: + +#define ALIGN(x) (((x) + 4095) & ~4095) + +static inline unsigned vring_size(unsigned int qsz) + +{ + + return ALIGN(sizeof(struct vring_desc)*qsz + sizeof(u16)*(2 ++ qsz)) + + + ALIGN(sizeof(struct vring_used_elem)*qsz); + +} + +This currently wastes some space with padding, but also allows +future extensions. The virtqueue layout structure looks like this +(qsz is the Queue Size field, which is a variable, so this code +won't compile): + +struct vring { + + /* The actual descriptors (16 bytes each) */ + + struct vring_desc desc[qsz]; + + + + /* A ring of available descriptor heads with free-running +index. */ + + struct vring_avail avail; + + + + // Padding to the next 4096 boundary. + + char pad[]; + + + + // A ring of used descriptor heads with free-running index. + + struct vring_used used; + +}; + + A Note on Virtqueue Endianness + +Note that the endian of these fields and everything else in the +virtqueue is the native endian of the guest, not little-endian as +PCI normally is. This makes for simpler guest code, and it is +assumed that the host already has to be deeply aware of the guest +endian so such an “endian-aware” device is not a significant +issue. + + Descriptor Table + +The descriptor table refers to the buffers the guest is using for +the device. The addresses are physical addresses, and the buffers +can be chained via the next field. Each descriptor describes a +buffer which is read-only or write-only, but a chain of +descriptors can contain both read-only and write-only buffers. + +No descriptor chain may be more than 2^32 bytes long in total.struct vring_desc { + + /* Address (guest-physical). */ + + u64 addr; + + /* Length. */ + + u32 len; + +/* This marks a buffer as continuing via the next field. */ + +#define VRING_DESC_F_NEXT 1 + +/* This marks a buffer as write-only (otherwise read-only). */ + +#define VRING_DESC_F_WRITE 2 + +/* This means the buffer contains a list of buffer descriptors. +*/ + +#define VRING_DESC_F_INDIRECT 4 + + /* The flags as indicated above. */ + + u16 flags; + + /* Next field if flags & NEXT */ + + u16 next; + +}; + +The number of descriptors in the table is specified by the Queue +Size field for this virtqueue. + + <sub:Indirect-Descriptors>Indirect Descriptors + +Some devices benefit by concurrently dispatching a large number +of large requests. The VIRTIO_RING_F_INDIRECT_DESC feature can be +used to allow this (see [cha:Reserved-Feature-Bits]). To increase +ring capacity it is possible to store a table of indirect +descriptors anywhere in memory, and insert a descriptor in main +virtqueue (with flags&INDIRECT on) that refers to memory buffer +containing this indirect descriptor table; fields addr and len +refer to the indirect table address and length in bytes, +respectively. The indirect table layout structure looks like this +(len is the length of the descriptor that refers to this table, +which is a variable, so this code won't compile): + +struct indirect_descriptor_table { + + /* The actual descriptors (16 bytes each) */ + + struct vring_desc desc[len / 16]; + +}; + +The first indirect descriptor is located at start of the indirect +descriptor table (index 0), additional indirect descriptors are +chained by next field. An indirect descriptor without next field +(with flags&NEXT off) signals the end of the indirect descriptor +table, and transfers control back to the main virtqueue. An +indirect descriptor can not refer to another indirect descriptor +table (flags&INDIRECT must be off). A single indirect descriptor +table can include both read-only and write-only descriptors; +write-only flag (flags&WRITE) in the descriptor that refers to it +is ignored. + + Available Ring + +The available ring refers to what descriptors we are offering the +device: it refers to the head of a descriptor chain. The “flags” +field is currently 0 or 1: 1 indicating that we do not need an +interrupt when the device consumes a descriptor from the +available ring. Alternatively, the guest can ask the device to +delay interrupts until an entry with an index specified by the “ +used_event” field is written in the used ring (equivalently, +until the idx field in the used ring will reach the value +used_event + 1). The method employed by the device is controlled +by the VIRTIO_RING_F_EVENT_IDX feature bit (see [cha:Reserved-Feature-Bits] +). This interrupt suppression is merely an optimization; it may +not suppress interrupts entirely. + +The “idx” field indicates where we would put the next descriptor +entry (modulo the ring size). This starts at 0, and increases. + +struct vring_avail { + +#define VRING_AVAIL_F_NO_INTERRUPT 1 + + u16 flags; + + u16 idx; + + u16 ring[qsz]; /* qsz is the Queue Size field read from device +*/ + + u16 used_event; + +}; + + Used Ring + +The used ring is where the device returns buffers once it is done +with them. The flags field can be used by the device to hint that +no notification is necessary when the guest adds to the available +ring. Alternatively, the “avail_event” field can be used by the +device to hint that no notification is necessary until an entry +with an index specified by the “avail_event” is written in the +available ring (equivalently, until the idx field in the +available ring will reach the value avail_event + 1). The method +employed by the device is controlled by the guest through the +VIRTIO_RING_F_EVENT_IDX feature bit (see [cha:Reserved-Feature-Bits] +). [footnote: +These fields are kept here because this is the only part of the +virtqueue written by the device +]. + +Each entry in the ring is a pair: the head entry of the +descriptor chain describing the buffer (this matches an entry +placed in the available ring by the guest earlier), and the total +of bytes written into the buffer. The latter is extremely useful +for guests using untrusted buffers: if you do not know exactly +how much has been written by the device, you usually have to zero +the buffer to ensure no data leakage occurs. + +/* u32 is used here for ids for padding reasons. */ + +struct vring_used_elem { + + /* Index of start of used descriptor chain. */ + + u32 id; + + /* Total length of the descriptor chain which was used +(written to) */ + + u32 len; + +}; + + + +struct vring_used { + +#define VRING_USED_F_NO_NOTIFY 1 + + u16 flags; + + u16 idx; + + struct vring_used_elem ring[qsz]; + + u16 avail_event; + +}; + + Helpers for Managing Virtqueues + +The Linux Kernel Source code contains the definitions above and +helper routines in a more usable form, in +include/linux/virtio_ring.h. This was explicitly licensed by IBM +and Red Hat under the (3-clause) BSD license so that it can be +freely used by all other projects, and is reproduced (with slight +variation to remove Linux assumptions) in Appendix A. + + Device Operation + +There are two parts to device operation: supplying new buffers to +the device, and processing used buffers from the device. As an +example, the virtio network device has two virtqueues: the +transmit virtqueue and the receive virtqueue. The driver adds +outgoing (read-only) packets to the transmit virtqueue, and then +frees them after they are used. Similarly, incoming (write-only) +buffers are added to the receive virtqueue, and processed after +they are used. + + Supplying Buffers to The Device + +Actual transfer of buffers from the guest OS to the device +operates as follows: + + Place the buffer(s) into free descriptor(s). + + If there are no free descriptors, the guest may choose to + notify the device even if notifications are suppressed (to + reduce latency).[footnote: +The Linux drivers do this only for read-only buffers: for +write-only buffers, it is assumed that the driver is merely +trying to keep the receive buffer ring full, and no notification +of this expected condition is necessary. +] + + Place the id of the buffer in the next ring entry of the + available ring. + + The steps (1) and (2) may be performed repeatedly if batching + is possible. + + A memory barrier should be executed to ensure the device sees + the updated descriptor table and available ring before the next + step. + + The available “idx” field should be increased by the number of + entries added to the available ring. + + A memory barrier should be executed to ensure that we update + the idx field before checking for notification suppression. + + If notifications are not suppressed, the device should be + notified of the new buffers. + +Note that the above code does not take precautions against the +available ring buffer wrapping around: this is not possible since +the ring buffer is the same size as the descriptor table, so step +(1) will prevent such a condition. + +In addition, the maximum queue size is 32768 (it must be a power +of 2 which fits in 16 bits), so the 16-bit “idx” value can always +distinguish between a full and empty buffer. + +Here is a description of each stage in more detail. + + Placing Buffers Into The Descriptor Table + +A buffer consists of zero or more read-only physically-contiguous +elements followed by zero or more physically-contiguous +write-only elements (it must have at least one element). This +algorithm maps it into the descriptor table: + + for each buffer element, b: + + Get the next free descriptor table entry, d + + Set d.addr to the physical address of the start of b + + Set d.len to the length of b. + + If b is write-only, set d.flags to VRING_DESC_F_WRITE, + otherwise 0. + + If there is a buffer element after this: + + Set d.next to the index of the next free descriptor element. + + Set the VRING_DESC_F_NEXT bit in d.flags. + +In practice, the d.next fields are usually used to chain free +descriptors, and a separate count kept to check there are enough +free descriptors before beginning the mappings. + + Updating The Available Ring + +The head of the buffer we mapped is the first d in the algorithm +above. A naive implementation would do the following: + +avail->ring[avail->idx % qsz] = head; + +However, in general we can add many descriptors before we update +the “idx” field (at which point they become visible to the +device), so we keep a counter of how many we've added: + +avail->ring[(avail->idx + added++) % qsz] = head; + + Updating The Index Field + +Once the idx field of the virtqueue is updated, the device will +be able to access the descriptor entries we've created and the +memory they refer to. This is why a memory barrier is generally +used before the idx update, to ensure it sees the most up-to-date +copy. + +The idx field always increments, and we let it wrap naturally at +65536: + +avail->idx += added; + + <sub:Notifying-The-Device>Notifying The Device + +Device notification occurs by writing the 16-bit virtqueue index +of this virtqueue to the Queue Notify field of the virtio header +in the first I/O region of the PCI device. This can be expensive, +however, so the device can suppress such notifications if it +doesn't need them. We have to be careful to expose the new idx +value before checking the suppression flag: it's OK to notify +gratuitously, but not to omit a required notification. So again, +we use a memory barrier here before reading the flags or the +avail_event field. + +If the VIRTIO_F_RING_EVENT_IDX feature is not negotiated, and if +the VRING_USED_F_NOTIFY flag is not set, we go ahead and write to +the PCI configuration space. + +If the VIRTIO_F_RING_EVENT_IDX feature is negotiated, we read the +avail_event field in the available ring structure. If the +available index crossed_the avail_event field value since the +last notification, we go ahead and write to the PCI configuration +space. The avail_event field wraps naturally at 65536 as well: + +(u16)(new_idx - avail_event - 1) < (u16)(new_idx - old_idx) + + <sub:Receiving-Used-Buffers>Receiving Used Buffers From The + Device + +Once the device has used a buffer (read from or written to it, or +parts of both, depending on the nature of the virtqueue and the +device), it sends an interrupt, following an algorithm very +similar to the algorithm used for the driver to send the device a +buffer: + + Write the head descriptor number to the next field in the used + ring. + + Update the used ring idx. + + Determine whether an interrupt is necessary: + + If the VIRTIO_F_RING_EVENT_IDX feature is not negotiated: check + if f the VRING_AVAIL_F_NO_INTERRUPT flag is not set in avail- + >flags + + If the VIRTIO_F_RING_EVENT_IDX feature is negotiated: check + whether the used index crossed the used_event field value + since the last update. The used_event field wraps naturally + at 65536 as well:(u16)(new_idx - used_event - 1) < (u16)(new_idx - old_idx) + + If an interrupt is necessary: + + If MSI-X capability is disabled: + + Set the lower bit of the ISR Status field for the device. + + Send the appropriate PCI interrupt for the device. + + If MSI-X capability is enabled: + + Request the appropriate MSI-X interrupt message for the + device, Queue Vector field sets the MSI-X Table entry + number. + + If Queue Vector field value is NO_VECTOR, no interrupt + message is requested for this event. + +The guest interrupt handler should: + + If MSI-X capability is disabled: read the ISR Status field, + which will reset it to zero. If the lower bit is zero, the + interrupt was not for this device. Otherwise, the guest driver + should look through the used rings of each virtqueue for the + device, to see if any progress has been made by the device + which requires servicing. + + If MSI-X capability is enabled: look through the used rings of + each virtqueue mapped to the specific MSI-X vector for the + device, to see if any progress has been made by the device + which requires servicing. + +For each ring, guest should then disable interrupts by writing +VRING_AVAIL_F_NO_INTERRUPT flag in avail structure, if required. +It can then process used ring entries finally enabling interrupts +by clearing the VRING_AVAIL_F_NO_INTERRUPT flag or updating the +EVENT_IDX field in the available structure, Guest should then +execute a memory barrier, and then recheck the ring empty +condition. This is necessary to handle the case where, after the +last check and before enabling interrupts, an interrupt has been +suppressed by the device: + +vring_disable_interrupts(vq); + +for (;;) { + + if (vq->last_seen_used != vring->used.idx) { + + vring_enable_interrupts(vq); + + mb(); + + if (vq->last_seen_used != vring->used.idx) + + break; + + } + + struct vring_used_elem *e = +vring.used->ring[vq->last_seen_used%vsz]; + + process_buffer(e); + + vq->last_seen_used++; + +} + + Dealing With Configuration Changes + +Some virtio PCI devices can change the device configuration +state, as reflected in the virtio header in the PCI configuration +space. In this case: + + If MSI-X capability is disabled: an interrupt is delivered and + the second highest bit is set in the ISR Status field to + indicate that the driver should re-examine the configuration + space.Note that a single interrupt can indicate both that one + or more virtqueue has been used and that the configuration + space has changed: even if the config bit is set, virtqueues + must be scanned. + + If MSI-X capability is enabled: an interrupt message is + requested. The Configuration Vector field sets the MSI-X Table + entry number to use. If Configuration Vector field value is + NO_VECTOR, no interrupt message is requested for this event. + +Creating New Device Types + +Various considerations are necessary when creating a new device +type: + + How Many Virtqueues? + +It is possible that a very simple device will operate entirely +through its configuration space, but most will need at least one +virtqueue in which it will place requests. A device with both +input and output (eg. console and network devices described here) +need two queues: one which the driver fills with buffers to +receive input, and one which the driver places buffers to +transmit output. + + What Configuration Space Layout? + +Configuration space is generally used for rarely-changing or +initialization-time parameters. But it is a limited resource, so +it might be better to use a virtqueue to update configuration +information (the network device does this for filtering, +otherwise the table in the config space could potentially be very +large). + +Note that this space is generally the guest's native endian, +rather than PCI's little-endian. + + What Device Number? + +Currently device numbers are assigned quite freely: a simple +request mail to the author of this document or the Linux +virtualization mailing list[footnote: + +https://lists.linux-foundation.org/mailman/listinfo/virtualization +] will be sufficient to secure a unique one. + +Meanwhile for experimental drivers, use 65535 and work backwards. + + How many MSI-X vectors? + +Using the optional MSI-X capability devices can speed up +interrupt processing by removing the need to read ISR Status +register by guest driver (which might be an expensive operation), +reducing interrupt sharing between devices and queues within the +device, and handling interrupts from multiple CPUs. However, some +systems impose a limit (which might be as low as 256) on the +total number of MSI-X vectors that can be allocated to all +devices. Devices and/or device drivers should take this into +account, limiting the number of vectors used unless the device is +expected to cause a high volume of interrupts. Devices can +control the number of vectors used by limiting the MSI-X Table +Size or not presenting MSI-X capability in PCI configuration +space. Drivers can control this by mapping events to as small +number of vectors as possible, or disabling MSI-X capability +altogether. + + Message Framing + +The descriptors used for a buffer should not effect the semantics +of the message, except for the total length of the buffer. For +example, a network buffer consists of a 10 byte header followed +by the network packet. Whether this is presented in the ring +descriptor chain as (say) a 10 byte buffer and a 1514 byte +buffer, or a single 1524 byte buffer, or even three buffers, +should have no effect. + +In particular, no implementation should use the descriptor +boundaries to determine the size of any header in a request.[footnote: +The current qemu device implementations mistakenly insist that +the first descriptor cover the header in these cases exactly, so +a cautious driver should arrange it so. +] + + Device Improvements + +Any change to configuration space, or new virtqueues, or +behavioural changes, should be indicated by negotiation of a new +feature bit. This establishes clarity[footnote: +Even if it does mean documenting design or implementation +mistakes! +] and avoids future expansion problems. + +Clusters of functionality which are always implemented together +can use a single bit, but if one feature makes sense without the +others they should not be gratuitously grouped together to +conserve feature bits. We can always extend the spec when the +first person needs more than 24 feature bits for their device. + +[LaTeX Command: printnomenclature] + +Appendix A: virtio_ring.h + +#ifndef VIRTIO_RING_H + +#define VIRTIO_RING_H + +/* An interface for efficient virtio implementation. + + * + + * This header is BSD licensed so anyone can use the definitions + + * to implement compatible drivers/servers. + + * + + * Copyright 2007, 2009, IBM Corporation + + * Copyright 2011, Red Hat, Inc + + * All rights reserved. + + * + + * Redistribution and use in source and binary forms, with or +without + + * modification, are permitted provided that the following +conditions + + * are met: + + * 1. Redistributions of source code must retain the above +copyright + + * notice, this list of conditions and the following +disclaimer. + + * 2. Redistributions in binary form must reproduce the above +copyright + + * notice, this list of conditions and the following +disclaimer in the + + * documentation and/or other materials provided with the +distribution. + + * 3. Neither the name of IBM nor the names of its contributors + + * may be used to endorse or promote products derived from +this software + + * without specific prior written permission. + + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ``AS IS'' AND + + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +TO, THE + + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE + + * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE +LIABLE + + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +CONSEQUENTIAL + + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +SUBSTITUTE GOODS + + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +INTERRUPTION) + + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +CONTRACT, STRICT + + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING +IN ANY WAY + + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF + + * SUCH DAMAGE. + + */ + + + +/* This marks a buffer as continuing via the next field. */ + +#define VRING_DESC_F_NEXT 1 + +/* This marks a buffer as write-only (otherwise read-only). */ + +#define VRING_DESC_F_WRITE 2 + + + +/* The Host uses this in used->flags to advise the Guest: don't +kick me + + * when you add a buffer. It's unreliable, so it's simply an + + * optimization. Guest will still kick if it's out of buffers. +*/ + +#define VRING_USED_F_NO_NOTIFY 1 + +/* The Guest uses this in avail->flags to advise the Host: don't + + * interrupt me when you consume a buffer. It's unreliable, so +it's + + * simply an optimization. */ + +#define VRING_AVAIL_F_NO_INTERRUPT 1 + + + +/* Virtio ring descriptors: 16 bytes. + + * These can chain together via "next". */ + +struct vring_desc { + + /* Address (guest-physical). */ + + uint64_t addr; + + /* Length. */ + + uint32_t len; + + /* The flags as indicated above. */ + + uint16_t flags; + + /* We chain unused descriptors via this, too */ + + uint16_t next; + +}; + + + +struct vring_avail { + + uint16_t flags; + + uint16_t idx; + + uint16_t ring[]; + + uint16_t used_event; + +}; + + + +/* u32 is used here for ids for padding reasons. */ + +struct vring_used_elem { + + /* Index of start of used descriptor chain. */ + + uint32_t id; + + /* Total length of the descriptor chain which was written +to. */ + + uint32_t len; + +}; + + + +struct vring_used { + + uint16_t flags; + + uint16_t idx; + + struct vring_used_elem ring[]; + + uint16_t avail_event; + +}; + + + +struct vring { + + unsigned int num; + + + + struct vring_desc *desc; + + struct vring_avail *avail; + + struct vring_used *used; + +}; + + + +/* The standard layout for the ring is a continuous chunk of +memory which + + * looks like this. We assume num is a power of 2. + + * + + * struct vring { + + * // The actual descriptors (16 bytes each) + + * struct vring_desc desc[num]; + + * + + * // A ring of available descriptor heads with free-running +index. + + * __u16 avail_flags; + + * __u16 avail_idx; + + * __u16 available[num]; + + * + + * // Padding to the next align boundary. + + * char pad[]; + + * + + * // A ring of used descriptor heads with free-running +index. + + * __u16 used_flags; + + * __u16 EVENT_IDX; + + * struct vring_used_elem used[num]; + + * }; + + * Note: for virtio PCI, align is 4096. + + */ + +static inline void vring_init(struct vring *vr, unsigned int num, +void *p, + + unsigned long align) + +{ + + vr->num = num; + + vr->desc = p; + + vr->avail = p + num*sizeof(struct vring_desc); + + vr->used = (void *)(((unsigned long)&vr->avail->ring[num] + + + align-1) + + & ~(align - 1)); + +} + + + +static inline unsigned vring_size(unsigned int num, unsigned long +align) + +{ + + return ((sizeof(struct vring_desc)*num + +sizeof(uint16_t)*(2+num) + + + align - 1) & ~(align - 1)) + + + sizeof(uint16_t)*3 + sizeof(struct +vring_used_elem)*num; + +} + + + +static inline int vring_need_event(uint16_t event_idx, uint16_t +new_idx, uint16_t old_idx) + +{ + + return (uint16_t)(new_idx - event_idx - 1) < +(uint16_t)(new_idx - old_idx); + +} + +#endif /* VIRTIO_RING_H */ + +<cha:Reserved-Feature-Bits>Appendix B: Reserved Feature Bits + +Currently there are five device-independent feature bits defined: + + VIRTIO_F_NOTIFY_ON_EMPTY (24) Negotiating this feature + indicates that the driver wants an interrupt if the device runs + out of available descriptors on a virtqueue, even though + interrupts are suppressed using the VRING_AVAIL_F_NO_INTERRUPT + flag or the used_event field. An example of this is the + networking driver: it doesn't need to know every time a packet + is transmitted, but it does need to free the transmitted + packets a finite time after they are transmitted. It can avoid + using a timer if the device interrupts it when all the packets + are transmitted. + + VIRTIO_F_RING_INDIRECT_DESC (28) Negotiating this feature + indicates that the driver can use descriptors with the + VRING_DESC_F_INDIRECT flag set, as described in [sub:Indirect-Descriptors] + . + + VIRTIO_F_RING_EVENT_IDX(29) This feature enables the used_event + and the avail_event fields. If set, it indicates that the + device should ignore the flags field in the available ring + structure. Instead, the used_event field in this structure is + used by guest to suppress device interrupts. Further, the + driver should ignore the flags field in the used ring + structure. Instead, the avail_event field in this structure is + used by the device to suppress notifications. If unset, the + driver should ignore the used_event field; the device should + ignore the avail_event field; the flags field is used + + VIRTIO_F_BAD_FEATURE(30) This feature should never be + negotiated by the guest; doing so is an indication that the + guest is faulty[footnote: +An experimental virtio PCI driver contained in Linux version +2.6.25 had this problem, and this feature bit can be used to +detect it. +] + + VIRTIO_F_FEATURES_HIGH(31) This feature indicates that the + device supports feature bits 32:63. If unset, feature bits + 32:63 are unset. + +Appendix C: Network Device + +The virtio network device is a virtual ethernet card, and is the +most complex of the devices supported so far by virtio. It has +enhanced rapidly and demonstrates clearly how support for new +features should be added to an existing device. Empty buffers are +placed in one virtqueue for receiving packets, and outgoing +packets are enqueued into another for transmission in that order. +A third command queue is used to control advanced filtering +features. + + Configuration + + Subsystem Device ID 1 + + Virtqueues 0:receiveq. 1:transmitq. 2:controlq[footnote: +Only if VIRTIO_NET_F_CTRL_VQ set +] + + Feature bits + + VIRTIO_NET_F_CSUM (0) Device handles packets with partial + checksum + + VIRTIO_NET_F_GUEST_CSUM (1) Guest handles packets with partial + checksum + + VIRTIO_NET_F_MAC (5) Device has given MAC address. + + VIRTIO_NET_F_GSO (6) (Deprecated) device handles packets with + any GSO type.[footnote: +It was supposed to indicate segmentation offload support, but +upon further investigation it became clear that multiple bits +were required. +] + + VIRTIO_NET_F_GUEST_TSO4 (7) Guest can receive TSOv4. + + VIRTIO_NET_F_GUEST_TSO6 (8) Guest can receive TSOv6. + + VIRTIO_NET_F_GUEST_ECN (9) Guest can receive TSO with ECN. + + VIRTIO_NET_F_GUEST_UFO (10) Guest can receive UFO. + + VIRTIO_NET_F_HOST_TSO4 (11) Device can receive TSOv4. + + VIRTIO_NET_F_HOST_TSO6 (12) Device can receive TSOv6. + + VIRTIO_NET_F_HOST_ECN (13) Device can receive TSO with ECN. + + VIRTIO_NET_F_HOST_UFO (14) Device can receive UFO. + + VIRTIO_NET_F_MRG_RXBUF (15) Guest can merge receive buffers. + + VIRTIO_NET_F_STATUS (16) Configuration status field is + available. + + VIRTIO_NET_F_CTRL_VQ (17) Control channel is available. + + VIRTIO_NET_F_CTRL_RX (18) Control channel RX mode support. + + VIRTIO_NET_F_CTRL_VLAN (19) Control channel VLAN filtering. + + Device configuration layout Two configuration fields are + currently defined. The mac address field always exists (though + is only valid if VIRTIO_NET_F_MAC is set), and the status field + only exists if VIRTIO_NET_F_STATUS is set. Only one bit is + currently defined for the status field: VIRTIO_NET_S_LINK_UP. #define VIRTIO_NET_S_LINK_UP 1 + + + +struct virtio_net_config { + + u8 mac[6]; + + u16 status; + +}; + + Device Initialization + + The initialization routine should identify the receive and + transmission virtqueues. + + If the VIRTIO_NET_F_MAC feature bit is set, the configuration + space “mac” entry indicates the “physical” address of the the + network card, otherwise a private MAC address should be + assigned. All guests are expected to negotiate this feature if + it is set. + + If the VIRTIO_NET_F_CTRL_VQ feature bit is negotiated, identify + the control virtqueue. + + If the VIRTIO_NET_F_STATUS feature bit is negotiated, the link + status can be read from the bottom bit of the “status” config + field. Otherwise, the link should be assumed active. + + The receive virtqueue should be filled with receive buffers. + This is described in detail below in “Setting Up Receive + Buffers”. + + A driver can indicate that it will generate checksumless + packets by negotating the VIRTIO_NET_F_CSUM feature. This “ + checksum offload” is a common feature on modern network cards. + + If that feature is negotiated, a driver can use TCP or UDP + segmentation offload by negotiating the VIRTIO_NET_F_HOST_TSO4 + (IPv4 TCP), VIRTIO_NET_F_HOST_TSO6 (IPv6 TCP) and + VIRTIO_NET_F_HOST_UFO (UDP fragmentation) features. It should + not send TCP packets requiring segmentation offload which have + the Explicit Congestion Notification bit set, unless the + VIRTIO_NET_F_HOST_ECN feature is negotiated.[footnote: +This is a common restriction in real, older network cards. +] + + The converse features are also available: a driver can save the + virtual device some work by negotiating these features.[footnote: +For example, a network packet transported between two guests on +the same system may not require checksumming at all, nor +segmentation, if both guests are amenable. +] The VIRTIO_NET_F_GUEST_CSUM feature indicates that partially + checksummed packets can be received, and if it can do that then + the VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6, + VIRTIO_NET_F_GUEST_UFO and VIRTIO_NET_F_GUEST_ECN are the input + equivalents of the features described above. See “Receiving + Packets” below. + + Device Operation + +Packets are transmitted by placing them in the transmitq, and +buffers for incoming packets are placed in the receiveq. In each +case, the packet itself is preceeded by a header: + +struct virtio_net_hdr { + +#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 + + u8 flags; + +#define VIRTIO_NET_HDR_GSO_NONE 0 + +#define VIRTIO_NET_HDR_GSO_TCPV4 1 + +#define VIRTIO_NET_HDR_GSO_UDP 3 + +#define VIRTIO_NET_HDR_GSO_TCPV6 4 + +#define VIRTIO_NET_HDR_GSO_ECN 0x80 + + u8 gso_type; + + u16 hdr_len; + + u16 gso_size; + + u16 csum_start; + + u16 csum_offset; + +/* Only if VIRTIO_NET_F_MRG_RXBUF: */ + + u16 num_buffers + +}; + +The controlq is used to control device features such as +filtering. + + Packet Transmission + +Transmitting a single packet is simple, but varies depending on +the different features the driver negotiated. + + If the driver negotiated VIRTIO_NET_F_CSUM, and the packet has + not been fully checksummed, then the virtio_net_hdr's fields + are set as follows. Otherwise, the packet must be fully + checksummed, and flags is zero. + + flags has the VIRTIO_NET_HDR_F_NEEDS_CSUM set, + + <ite:csum_start-is-set>csum_start is set to the offset within + the packet to begin checksumming, and + + csum_offset indicates how many bytes after the csum_start the + new (16 bit ones' complement) checksum should be placed.[footnote: +For example, consider a partially checksummed TCP (IPv4) packet. +It will have a 14 byte ethernet header and 20 byte IP header +followed by the TCP header (with the TCP checksum field 16 bytes +into that header). csum_start will be 14+20 = 34 (the TCP +checksum includes the header), and csum_offset will be 16. The +value in the TCP checksum field will be the sum of the TCP pseudo +header, so that replacing it by the ones' complement checksum of +the TCP header and body will give the correct result. +] + + <enu:If-the-driver>If the driver negotiated + VIRTIO_NET_F_HOST_TSO4, TSO6 or UFO, and the packet requires + TCP segmentation or UDP fragmentation, then the “gso_type” + field is set to VIRTIO_NET_HDR_GSO_TCPV4, TCPV6 or UDP. + (Otherwise, it is set to VIRTIO_NET_HDR_GSO_NONE). In this + case, packets larger than 1514 bytes can be transmitted: the + metadata indicates how to replicate the packet header to cut it + into smaller packets. The other gso fields are set: + + hdr_len is a hint to the device as to how much of the header + needs to be kept to copy into each packet, usually set to the + length of the headers, including the transport header.[footnote: +Due to various bugs in implementations, this field is not useful +as a guarantee of the transport header size. +] + + gso_size is the size of the packet beyond that header (ie. + MSS). + + If the driver negotiated the VIRTIO_NET_F_HOST_ECN feature, the + VIRTIO_NET_HDR_GSO_ECN bit may be set in “gso_type” as well, + indicating that the TCP packet has the ECN bit set.[footnote: +This case is not handled by some older hardware, so is called out +specifically in the protocol. +] + + If the driver negotiated the VIRTIO_NET_F_MRG_RXBUF feature, + the num_buffers field is set to zero. + + The header and packet are added as one output buffer to the + transmitq, and the device is notified of the new entry (see [sub:Notifying-The-Device] + ).[footnote: +Note that the header will be two bytes longer for the +VIRTIO_NET_F_MRG_RXBUF case. +] + + Packet Transmission Interrupt + +Often a driver will suppress transmission interrupts using the +VRING_AVAIL_F_NO_INTERRUPT flag (see [sub:Receiving-Used-Buffers] +) and check for used packets in the transmit path of following +packets. However, it will still receive interrupts if the +VIRTIO_F_NOTIFY_ON_EMPTY feature is negotiated, indicating that +the transmission queue is completely emptied. + +The normal behavior in this interrupt handler is to retrieve and +new descriptors from the used ring and free the corresponding +headers and packets. + + Setting Up Receive Buffers + +It is generally a good idea to keep the receive virtqueue as +fully populated as possible: if it runs out, network performance +will suffer. + +If the VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6 or +VIRTIO_NET_F_GUEST_UFO features are used, the Guest will need to +accept packets of up to 65550 bytes long (the maximum size of a +TCP or UDP packet, plus the 14 byte ethernet header), otherwise +1514 bytes. So unless VIRTIO_NET_F_MRG_RXBUF is negotiated, every +buffer in the receive queue needs to be at least this length [footnote: +Obviously each one can be split across multiple descriptor +elements. +]. + +If VIRTIO_NET_F_MRG_RXBUF is negotiated, each buffer must be at +least the size of the struct virtio_net_hdr. + + Packet Receive Interrupt + +When a packet is copied into a buffer in the receiveq, the +optimal path is to disable further interrupts for the receiveq +(see [sub:Receiving-Used-Buffers]) and process packets until no +more are found, then re-enable them. + +Processing packet involves: + + If the driver negotiated the VIRTIO_NET_F_MRG_RXBUF feature, + then the “num_buffers” field indicates how many descriptors + this packet is spread over (including this one). This allows + receipt of large packets without having to allocate large + buffers. In this case, there will be at least “num_buffers” in + the used ring, and they should be chained together to form a + single packet. The other buffers will not begin with a struct + virtio_net_hdr. + + If the VIRTIO_NET_F_MRG_RXBUF feature was not negotiated, or + the “num_buffers” field is one, then the entire packet will be + contained within this buffer, immediately following the struct + virtio_net_hdr. + + If the VIRTIO_NET_F_GUEST_CSUM feature was negotiated, the + VIRTIO_NET_HDR_F_NEEDS_CSUM bit in the “flags” field may be + set: if so, the checksum on the packet is incomplete and the “ + csum_start” and “csum_offset” fields indicate how to calculate + it (see [ite:csum_start-is-set]). + + If the VIRTIO_NET_F_GUEST_TSO4, TSO6 or UFO options were + negotiated, then the “gso_type” may be something other than + VIRTIO_NET_HDR_GSO_NONE, and the “gso_size” field indicates the + desired MSS (see [enu:If-the-driver]).Control Virtqueue + +The driver uses the control virtqueue (if VIRTIO_NET_F_VTRL_VQ is +negotiated) to send commands to manipulate various features of +the device which would not easily map into the configuration +space. + +All commands are of the following form: + +struct virtio_net_ctrl { + + u8 class; + + u8 command; + + u8 command-specific-data[]; + + u8 ack; + +}; + + + +/* ack values */ + +#define VIRTIO_NET_OK 0 + +#define VIRTIO_NET_ERR 1 + +The class, command and command-specific-data are set by the +driver, and the device sets the ack byte. There is little it can +do except issue a diagnostic if the ack byte is not +VIRTIO_NET_OK. + + Packet Receive Filtering + +If the VIRTIO_NET_F_CTRL_RX feature is negotiated, the driver can +send control commands for promiscuous mode, multicast receiving, +and filtering of MAC addresses. + +Note that in general, these commands are best-effort: unwanted +packets may still arrive. + + Setting Promiscuous Mode + +#define VIRTIO_NET_CTRL_RX 0 + + #define VIRTIO_NET_CTRL_RX_PROMISC 0 + + #define VIRTIO_NET_CTRL_RX_ALLMULTI 1 + +The class VIRTIO_NET_CTRL_RX has two commands: +VIRTIO_NET_CTRL_RX_PROMISC turns promiscuous mode on and off, and +VIRTIO_NET_CTRL_RX_ALLMULTI turns all-multicast receive on and +off. The command-specific-data is one byte containing 0 (off) or +1 (on). + + Setting MAC Address Filtering + +struct virtio_net_ctrl_mac { + + u32 entries; + + u8 macs[entries][ETH_ALEN]; + +}; + + + +#define VIRTIO_NET_CTRL_MAC 1 + + #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0 + +The device can filter incoming packets by any number of +destination MAC addresses.[footnote: +Since there are no guarentees, it can use a hash filter +orsilently switch to allmulti or promiscuous mode if it is given +too many addresses. +] This table is set using the class VIRTIO_NET_CTRL_MAC and the +command VIRTIO_NET_CTRL_MAC_TABLE_SET. The command-specific-data +is two variable length tables of 6-byte MAC addresses. The first +table contains unicast addresses, and the second contains +multicast addresses. + + VLAN Filtering + +If the driver negotiates the VIRTION_NET_F_CTRL_VLAN feature, it +can control a VLAN filter table in the device. + +#define VIRTIO_NET_CTRL_VLAN 2 + + #define VIRTIO_NET_CTRL_VLAN_ADD 0 + + #define VIRTIO_NET_CTRL_VLAN_DEL 1 + +Both the VIRTIO_NET_CTRL_VLAN_ADD and VIRTIO_NET_CTRL_VLAN_DEL +command take a 16-bit VLAN id as the command-specific-data. + +Appendix D: Block Device + +The virtio block device is a simple virtual block device (ie. +disk). Read and write requests (and other exotic requests) are +placed in the queue, and serviced (probably out of order) by the +device except where noted. + + Configuration + + Subsystem Device ID 2 + + Virtqueues 0:requestq. + + Feature bits + + VIRTIO_BLK_F_BARRIER (0) Host supports request barriers. + + VIRTIO_BLK_F_SIZE_MAX (1) Maximum size of any single segment is + in “size_max”. + + VIRTIO_BLK_F_SEG_MAX (2) Maximum number of segments in a + request is in “seg_max”. + + VIRTIO_BLK_F_GEOMETRY (4) Disk-style geometry specified in “ + geometry”. + + VIRTIO_BLK_F_RO (5) Device is read-only. + + VIRTIO_BLK_F_BLK_SIZE (6) Block size of disk is in “blk_size”. + + VIRTIO_BLK_F_SCSI (7) Device supports scsi packet commands. + + VIRTIO_BLK_F_FLUSH (9) Cache flush command support. + + + + Device configuration layout The capacity of the device + (expressed in 512-byte sectors) is always present. The + availability of the others all depend on various feature bits + as indicated above. struct virtio_blk_config { + + u64 capacity; + + u32 size_max; + + u32 seg_max; + + struct virtio_blk_geometry { + + u16 cylinders; + + u8 heads; + + u8 sectors; + + } geometry; + + u32 blk_size; + + + +}; + + Device Initialization + + The device size should be read from the “capacity” + configuration field. No requests should be submitted which goes + beyond this limit. + + If the VIRTIO_BLK_F_BLK_SIZE feature is negotiated, the + blk_size field can be read to determine the optimal sector size + for the driver to use. This does not effect the units used in + the protocol (always 512 bytes), but awareness of the correct + value can effect performance. + + If the VIRTIO_BLK_F_RO feature is set by the device, any write + requests will fail. + + + + Device Operation + +The driver queues requests to the virtqueue, and they are used by +the device (not necessarily in order). Each request is of form: + +struct virtio_blk_req { + + + + u32 type; + + u32 ioprio; + + u64 sector; + + char data[][512]; + + u8 status; + +}; + +If the device has VIRTIO_BLK_F_SCSI feature, it can also support +scsi packet command requests, each of these requests is of form:struct virtio_scsi_pc_req { + + u32 type; + + u32 ioprio; + + u64 sector; + + char cmd[]; + + char data[][512]; + +#define SCSI_SENSE_BUFFERSIZE 96 + + u8 sense[SCSI_SENSE_BUFFERSIZE]; + + u32 errors; + + u32 data_len; + + u32 sense_len; + + u32 residual; + + u8 status; + +}; + +The type of the request is either a read (VIRTIO_BLK_T_IN), a +write (VIRTIO_BLK_T_OUT), a scsi packet command +(VIRTIO_BLK_T_SCSI_CMD or VIRTIO_BLK_T_SCSI_CMD_OUT[footnote: +the SCSI_CMD and SCSI_CMD_OUT types are equivalent, the device +does not distinguish between them +]) or a flush (VIRTIO_BLK_T_FLUSH or VIRTIO_BLK_T_FLUSH_OUT[footnote: +the FLUSH and FLUSH_OUT types are equivalent, the device does not +distinguish between them +]). If the device has VIRTIO_BLK_F_BARRIER feature the high bit +(VIRTIO_BLK_T_BARRIER) indicates that this request acts as a +barrier and that all preceeding requests must be complete before +this one, and all following requests must not be started until +this is complete. Note that a barrier does not flush caches in +the underlying backend device in host, and thus does not serve as +data consistency guarantee. Driver must use FLUSH request to +flush the host cache. + +#define VIRTIO_BLK_T_IN 0 + +#define VIRTIO_BLK_T_OUT 1 + +#define VIRTIO_BLK_T_SCSI_CMD 2 + +#define VIRTIO_BLK_T_SCSI_CMD_OUT 3 + +#define VIRTIO_BLK_T_FLUSH 4 + +#define VIRTIO_BLK_T_FLUSH_OUT 5 + +#define VIRTIO_BLK_T_BARRIER 0x80000000 + +The ioprio field is a hint about the relative priorities of +requests to the device: higher numbers indicate more important +requests. + +The sector number indicates the offset (multiplied by 512) where +the read or write is to occur. This field is unused and set to 0 +for scsi packet commands and for flush commands. + +The cmd field is only present for scsi packet command requests, +and indicates the command to perform. This field must reside in a +single, separate read-only buffer; command length can be derived +from the length of this buffer. + +Note that these first three (four for scsi packet commands) +fields are always read-only: the data field is either read-only +or write-only, depending on the request. The size of the read or +write can be derived from the total size of the request buffers. + +The sense field is only present for scsi packet command requests, +and indicates the buffer for scsi sense data. + +The data_len field is only present for scsi packet command +requests, this field is deprecated, and should be ignored by the +driver. Historically, devices copied data length there. + +The sense_len field is only present for scsi packet command +requests and indicates the number of bytes actually written to +the sense buffer. + +The residual field is only present for scsi packet command +requests and indicates the residual size, calculated as data +length - number of bytes actually transferred. + +The final status byte is written by the device: either +VIRTIO_BLK_S_OK for success, VIRTIO_BLK_S_IOERR for host or guest +error or VIRTIO_BLK_S_UNSUPP for a request unsupported by host:#define VIRTIO_BLK_S_OK 0 + +#define VIRTIO_BLK_S_IOERR 1 + +#define VIRTIO_BLK_S_UNSUPP 2 + +Historically, devices assumed that the fields type, ioprio and +sector reside in a single, separate read-only buffer; the fields +errors, data_len, sense_len and residual reside in a single, +separate write-only buffer; the sense field in a separate +write-only buffer of size 96 bytes, by itself; the fields errors, +data_len, sense_len and residual in a single write-only buffer; +and the status field is a separate read-only buffer of size 1 +byte, by itself. + +Appendix E: Console Device + +The virtio console device is a simple device for data input and +output. A device may have one or more ports. Each port has a pair +of input and output virtqueues. Moreover, a device has a pair of +control IO virtqueues. The control virtqueues are used to +communicate information between the device and the driver about +ports being opened and closed on either side of the connection, +indication from the host about whether a particular port is a +console port, adding new ports, port hot-plug/unplug, etc., and +indication from the guest about whether a port or a device was +successfully added, port open/close, etc.. For data IO, one or +more empty buffers are placed in the receive queue for incoming +data and outgoing characters are placed in the transmit queue. + + Configuration + + Subsystem Device ID 3 + + Virtqueues 0:receiveq(port0). 1:transmitq(port0), 2:control + receiveq[footnote: +Ports 2 onwards only if VIRTIO_CONSOLE_F_MULTIPORT is set +], 3:control transmitq, 4:receiveq(port1), 5:transmitq(port1), + ... + + Feature bits + + VIRTIO_CONSOLE_F_SIZE (0) Configuration cols and rows fields + are valid. + + VIRTIO_CONSOLE_F_MULTIPORT(1) Device has support for multiple + ports; configuration fields nr_ports and max_nr_ports are + valid and control virtqueues will be used. + + Device configuration layout The size of the console is supplied + in the configuration space if the VIRTIO_CONSOLE_F_SIZE feature + is set. Furthermore, if the VIRTIO_CONSOLE_F_MULTIPORT feature + is set, the maximum number of ports supported by the device can + be fetched.struct virtio_console_config { + + u16 cols; + + u16 rows; + + + + u32 max_nr_ports; + +}; + + Device Initialization + + If the VIRTIO_CONSOLE_F_SIZE feature is negotiated, the driver + can read the console dimensions from the configuration fields. + + If the VIRTIO_CONSOLE_F_MULTIPORT feature is negotiated, the + driver can spawn multiple ports, not all of which may be + attached to a console. Some could be generic ports. In this + case, the control virtqueues are enabled and according to the + max_nr_ports configuration-space value, the appropriate number + of virtqueues are created. A control message indicating the + driver is ready is sent to the host. The host can then send + control messages for adding new ports to the device. After + creating and initializing each port, a + VIRTIO_CONSOLE_PORT_READY control message is sent to the host + for that port so the host can let us know of any additional + configuration options set for that port. + + The receiveq for each port is populated with one or more + receive buffers. + + Device Operation + + For output, a buffer containing the characters is placed in the + port's transmitq.[footnote: +Because this is high importance and low bandwidth, the current +Linux implementation polls for the buffer to be used, rather than +waiting for an interrupt, simplifying the implementation +significantly. However, for generic serial ports with the +O_NONBLOCK flag set, the polling limitation is relaxed and the +consumed buffers are freed upon the next write or poll call or +when a port is closed or hot-unplugged. +] + + When a buffer is used in the receiveq (signalled by an + interrupt), the contents is the input to the port associated + with the virtqueue for which the notification was received. + + If the driver negotiated the VIRTIO_CONSOLE_F_SIZE feature, a + configuration change interrupt may occur. The updated size can + be read from the configuration fields. + + If the driver negotiated the VIRTIO_CONSOLE_F_MULTIPORT + feature, active ports are announced by the host using the + VIRTIO_CONSOLE_PORT_ADD control message. The same message is + used for port hot-plug as well. + + If the host specified a port `name', a sysfs attribute is + created with the name filled in, so that udev rules can be + written that can create a symlink from the port's name to the + char device for port discovery by applications in the guest. + + Changes to ports' state are effected by control messages. + Appropriate action is taken on the port indicated in the + control message. The layout of the structure of the control + buffer and the events associated are:struct virtio_console_control { + + uint32_t id; /* Port number */ + + uint16_t event; /* The kind of control event */ + + uint16_t value; /* Extra information for the event */ + +}; + + + +/* Some events for the internal messages (control packets) */ + + + +#define VIRTIO_CONSOLE_DEVICE_READY 0 + +#define VIRTIO_CONSOLE_PORT_ADD 1 + +#define VIRTIO_CONSOLE_PORT_REMOVE 2 + +#define VIRTIO_CONSOLE_PORT_READY 3 + +#define VIRTIO_CONSOLE_CONSOLE_PORT 4 + +#define VIRTIO_CONSOLE_RESIZE 5 + +#define VIRTIO_CONSOLE_PORT_OPEN 6 + +#define VIRTIO_CONSOLE_PORT_NAME 7 + +Appendix F: Entropy Device + +The virtio entropy device supplies high-quality randomness for +guest use. + + Configuration + + Subsystem Device ID 4 + + Virtqueues 0:requestq. + + Feature bits None currently defined + + Device configuration layout None currently defined. + + Device Initialization + + The virtqueue is initialized + + Device Operation + +When the driver requires random bytes, it places the descriptor +of one or more buffers in the queue. It will be completely filled +by random data by the device. + +Appendix G: Memory Balloon Device + +The virtio memory balloon device is a primitive device for +managing guest memory: the device asks for a certain amount of +memory, and the guest supplies it (or withdraws it, if the device +has more than it asks for). This allows the guest to adapt to +changes in allowance of underlying physical memory. If the +feature is negotiated, the device can also be used to communicate +guest memory statistics to the host. + + Configuration + + Subsystem Device ID 5 + + Virtqueues 0:inflateq. 1:deflateq. 2:statsq.[footnote: +Only if VIRTIO_BALLON_F_STATS_VQ set +] + + Feature bits + + VIRTIO_BALLOON_F_MUST_TELL_HOST (0) Host must be told before + pages from the balloon are used. + + VIRTIO_BALLOON_F_STATS_VQ (1) A virtqueue for reporting guest + memory statistics is present. + + Device configuration layout Both fields of this configuration + are always available. Note that they are little endian, despite + convention that device fields are guest endian:struct virtio_balloon_config { + + u32 num_pages; + + u32 actual; + +}; + + Device Initialization + + The inflate and deflate virtqueues are identified. + + If the VIRTIO_BALLOON_F_STATS_VQ feature bit is negotiated: + + Identify the stats virtqueue. + + Add one empty buffer to the stats virtqueue and notify the + host. + +Device operation begins immediately. + + Device Operation + + Memory Ballooning The device is driven by the receipt of a + configuration change interrupt. + + The “num_pages” configuration field is examined. If this is + greater than the “actual” number of pages, memory must be given + to the balloon. If it is less than the “actual” number of + pages, memory may be taken back from the balloon for general + use. + + To supply memory to the balloon (aka. inflate): + + The driver constructs an array of addresses of unused memory + pages. These addresses are divided by 4096[footnote: +This is historical, and independent of the guest page size +] and the descriptor describing the resulting 32-bit array is + added to the inflateq. + + To remove memory from the balloon (aka. deflate): + + The driver constructs an array of addresses of memory pages it + has previously given to the balloon, as described above. This + descriptor is added to the deflateq. + + If the VIRTIO_BALLOON_F_MUST_TELL_HOST feature is set, the + guest may not use these requested pages until that descriptor + in the deflateq has been used by the device. + + Otherwise, the guest may begin to re-use pages previously given + to the balloon before the device has acknowledged their + withdrawl. [footnote: +In this case, deflation advice is merely a courtesy +] + + In either case, once the device has completed the inflation or + deflation, the “actual” field of the configuration should be + updated to reflect the new number of pages in the balloon.[footnote: +As updates to configuration space are not atomic, this field +isn't particularly reliable, but can be used to diagnose buggy +guests. +] + + Memory Statistics + +The stats virtqueue is atypical because communication is driven +by the device (not the driver). The channel becomes active at +driver initialization time when the driver adds an empty buffer +and notifies the device. A request for memory statistics proceeds +as follows: + + The device pushes the buffer onto the used ring and sends an + interrupt. + + The driver pops the used buffer and discards it. + + The driver collects memory statistics and writes them into a + new buffer. + + The driver adds the buffer to the virtqueue and notifies the + device. + + The device pops the buffer (retaining it to initiate a + subsequent request) and consumes the statistics. + + Memory Statistics Format Each statistic consists of a 16 bit + tag and a 64 bit value. Both quantities are represented in the + native endian of the guest. All statistics are optional and the + driver may choose which ones to supply. To guarantee backwards + compatibility, unsupported statistics should be omitted. + + struct virtio_balloon_stat { + +#define VIRTIO_BALLOON_S_SWAP_IN 0 + +#define VIRTIO_BALLOON_S_SWAP_OUT 1 + +#define VIRTIO_BALLOON_S_MAJFLT 2 + +#define VIRTIO_BALLOON_S_MINFLT 3 + +#define VIRTIO_BALLOON_S_MEMFREE 4 + +#define VIRTIO_BALLOON_S_MEMTOT 5 + + u16 tag; + + u64 val; + +} __attribute__((packed)); + + Tags + + VIRTIO_BALLOON_S_SWAP_IN The amount of memory that has been + swapped in (in bytes). + + VIRTIO_BALLOON_S_SWAP_OUT The amount of memory that has been + swapped out to disk (in bytes). + + VIRTIO_BALLOON_S_MAJFLT The number of major page faults that + have occurred. + + VIRTIO_BALLOON_S_MINFLT The number of minor page faults that + have occurred. + + VIRTIO_BALLOON_S_MEMFREE The amount of memory not being used + for any purpose (in bytes). + + VIRTIO_BALLOON_S_MEMTOT The total amount of memory available + (in bytes). + diff --git a/Documentation/vm/00-INDEX b/Documentation/vm/00-INDEX index dca82d7..5481c8b 100644 --- a/Documentation/vm/00-INDEX +++ b/Documentation/vm/00-INDEX @@ -30,8 +30,6 @@ page_migration - description of page migration in NUMA systems. pagemap.txt - pagemap, from the userspace perspective -slabinfo.c - - source code for a tool to get reports about slabs. slub.txt - a short users guide for SLUB. unevictable-lru.txt diff --git a/Documentation/vm/numa b/Documentation/vm/numa index a200a38..ade0127 100644 --- a/Documentation/vm/numa +++ b/Documentation/vm/numa @@ -109,11 +109,11 @@ to improve NUMA locality using various CPU affinity command line interfaces, such as taskset(1) and numactl(1), and program interfaces such as sched_setaffinity(2). Further, one can modify the kernel's default local allocation behavior using Linux NUMA memory policy. -[see Documentation/vm/numa_memory_policy.] +[see Documentation/vm/numa_memory_policy.txt.] System administrators can restrict the CPUs and nodes' memories that a non- privileged user can specify in the scheduling or NUMA commands and functions -using control groups and CPUsets. [see Documentation/cgroups/CPUsets.txt] +using control groups and CPUsets. [see Documentation/cgroups/cpusets.txt] On architectures that do not hide memoryless nodes, Linux will include only zones [nodes] with memory in the zonelists. This means that for a memoryless diff --git a/Documentation/vm/slub.txt b/Documentation/vm/slub.txt index 07375e7..f464f47 100644 --- a/Documentation/vm/slub.txt +++ b/Documentation/vm/slub.txt @@ -17,7 +17,7 @@ data and perform operation on the slabs. By default slabinfo only lists slabs that have data in them. See "slabinfo -h" for more options when running the command. slabinfo can be compiled with -gcc -o slabinfo Documentation/vm/slabinfo.c +gcc -o slabinfo tools/slub/slabinfo.c Some of the modes of operation of slabinfo require that slub debugging be enabled on the command line. F.e. no tracking information will be diff --git a/Documentation/vm/transhuge.txt b/Documentation/vm/transhuge.txt index 0924aac..29bdf62 100644 --- a/Documentation/vm/transhuge.txt +++ b/Documentation/vm/transhuge.txt @@ -123,10 +123,11 @@ be automatically shutdown if it's set to "never". khugepaged runs usually at low frequency so while one may not want to invoke defrag algorithms synchronously during the page faults, it should be worth invoking defrag at least in khugepaged. However it's -also possible to disable defrag in khugepaged: +also possible to disable defrag in khugepaged by writing 0 or enable +defrag in khugepaged by writing 1: -echo yes >/sys/kernel/mm/transparent_hugepage/khugepaged/defrag -echo no >/sys/kernel/mm/transparent_hugepage/khugepaged/defrag +echo 0 >/sys/kernel/mm/transparent_hugepage/khugepaged/defrag +echo 1 >/sys/kernel/mm/transparent_hugepage/khugepaged/defrag You can also control how many pages khugepaged should scan at each pass: diff --git a/Documentation/watchdog/00-INDEX b/Documentation/watchdog/00-INDEX index ee99451..fc51128 100644 --- a/Documentation/watchdog/00-INDEX +++ b/Documentation/watchdog/00-INDEX @@ -8,6 +8,8 @@ src/ - directory holding watchdog related example programs. watchdog-api.txt - description of the Linux Watchdog driver API. +watchdog-kernel-api.txt + - description of the Linux WatchDog Timer Driver Core kernel API. watchdog-parameters.txt - information on driver parameters (for drivers other than the ones that have driver-specific files here) diff --git a/Documentation/watchdog/convert_drivers_to_kernel_api.txt b/Documentation/watchdog/convert_drivers_to_kernel_api.txt new file mode 100644 index 0000000..ae1e900 --- /dev/null +++ b/Documentation/watchdog/convert_drivers_to_kernel_api.txt @@ -0,0 +1,195 @@ +Converting old watchdog drivers to the watchdog framework +by Wolfram Sang <w.sang@pengutronix.de> +========================================================= + +Before the watchdog framework came into the kernel, every driver had to +implement the API on its own. Now, as the framework factored out the common +components, those drivers can be lightened making it a user of the framework. +This document shall guide you for this task. The necessary steps are described +as well as things to look out for. + + +Remove the file_operations struct +--------------------------------- + +Old drivers define their own file_operations for actions like open(), write(), +etc... These are now handled by the framework and just call the driver when +needed. So, in general, the 'file_operations' struct and assorted functions can +go. Only very few driver-specific details have to be moved to other functions. +Here is a overview of the functions and probably needed actions: + +- open: Everything dealing with resource management (file-open checks, magic + close preparations) can simply go. Device specific stuff needs to go to the + driver specific start-function. Note that for some drivers, the start-function + also serves as the ping-function. If that is the case and you need start/stop + to be balanced (clocks!), you are better off refactoring a separate start-function. + +- close: Same hints as for open apply. + +- write: Can simply go, all defined behaviour is taken care of by the framework, + i.e. ping on write and magic char ('V') handling. + +- ioctl: While the driver is allowed to have extensions to the IOCTL interface, + the most common ones are handled by the framework, supported by some assistance + from the driver: + + WDIOC_GETSUPPORT: + Returns the mandatory watchdog_info struct from the driver + + WDIOC_GETSTATUS: + Needs the status-callback defined, otherwise returns 0 + + WDIOC_GETBOOTSTATUS: + Needs the bootstatus member properly set. Make sure it is 0 if you + don't have further support! + + WDIOC_SETOPTIONS: + No preparations needed + + WDIOC_KEEPALIVE: + If wanted, options in watchdog_info need to have WDIOF_KEEPALIVEPING + set + + WDIOC_SETTIMEOUT: + Options in watchdog_info need to have WDIOF_SETTIMEOUT set + and a set_timeout-callback has to be defined. The core will also + do limit-checking, if min_timeout and max_timeout in the watchdog + device are set. All is optional. + + WDIOC_GETTIMEOUT: + No preparations needed + + Other IOCTLs can be served using the ioctl-callback. Note that this is mainly + intended for porting old drivers; new drivers should not invent private IOCTLs. + Private IOCTLs are processed first. When the callback returns with + -ENOIOCTLCMD, the IOCTLs of the framework will be tried, too. Any other error + is directly given to the user. + +Example conversion: + +-static const struct file_operations s3c2410wdt_fops = { +- .owner = THIS_MODULE, +- .llseek = no_llseek, +- .write = s3c2410wdt_write, +- .unlocked_ioctl = s3c2410wdt_ioctl, +- .open = s3c2410wdt_open, +- .release = s3c2410wdt_release, +-}; + +Check the functions for device-specific stuff and keep it for later +refactoring. The rest can go. + + +Remove the miscdevice +--------------------- + +Since the file_operations are gone now, you can also remove the 'struct +miscdevice'. The framework will create it on watchdog_dev_register() called by +watchdog_register_device(). + +-static struct miscdevice s3c2410wdt_miscdev = { +- .minor = WATCHDOG_MINOR, +- .name = "watchdog", +- .fops = &s3c2410wdt_fops, +-}; + + +Remove obsolete includes and defines +------------------------------------ + +Because of the simplifications, a few defines are probably unused now. Remove +them. Includes can be removed, too. For example: + +- #include <linux/fs.h> +- #include <linux/miscdevice.h> (if MODULE_ALIAS_MISCDEV is not used) +- #include <linux/uaccess.h> (if no custom IOCTLs are used) + + +Add the watchdog operations +--------------------------- + +All possible callbacks are defined in 'struct watchdog_ops'. You can find it +explained in 'watchdog-kernel-api.txt' in this directory. start(), stop() and +owner must be set, the rest are optional. You will easily find corresponding +functions in the old driver. Note that you will now get a pointer to the +watchdog_device as a parameter to these functions, so you probably have to +change the function header. Other changes are most likely not needed, because +here simply happens the direct hardware access. If you have device-specific +code left from the above steps, it should be refactored into these callbacks. + +Here is a simple example: + ++static struct watchdog_ops s3c2410wdt_ops = { ++ .owner = THIS_MODULE, ++ .start = s3c2410wdt_start, ++ .stop = s3c2410wdt_stop, ++ .ping = s3c2410wdt_keepalive, ++ .set_timeout = s3c2410wdt_set_heartbeat, ++}; + +A typical function-header change looks like: + +-static void s3c2410wdt_keepalive(void) ++static int s3c2410wdt_keepalive(struct watchdog_device *wdd) + { +... ++ ++ return 0; + } + +... + +- s3c2410wdt_keepalive(); ++ s3c2410wdt_keepalive(&s3c2410_wdd); + + +Add the watchdog device +----------------------- + +Now we need to create a 'struct watchdog_device' and populate it with the +necessary information for the framework. The struct is also explained in detail +in 'watchdog-kernel-api.txt' in this directory. We pass it the mandatory +watchdog_info struct and the newly created watchdog_ops. Often, old drivers +have their own record-keeping for things like bootstatus and timeout using +static variables. Those have to be converted to use the members in +watchdog_device. Note that the timeout values are unsigned int. Some drivers +use signed int, so this has to be converted, too. + +Here is a simple example for a watchdog device: + ++static struct watchdog_device s3c2410_wdd = { ++ .info = &s3c2410_wdt_ident, ++ .ops = &s3c2410wdt_ops, ++}; + + +Register the watchdog device +---------------------------- + +Replace misc_register(&miscdev) with watchdog_register_device(&watchdog_dev). +Make sure the return value gets checked and the error message, if present, +still fits. Also convert the unregister case. + +- ret = misc_register(&s3c2410wdt_miscdev); ++ ret = watchdog_register_device(&s3c2410_wdd); + +... + +- misc_deregister(&s3c2410wdt_miscdev); ++ watchdog_unregister_device(&s3c2410_wdd); + + +Update the Kconfig-entry +------------------------ + +The entry for the driver now needs to select WATCHDOG_CORE: + ++ select WATCHDOG_CORE + + +Create a patch and send it to upstream +-------------------------------------- + +Make sure you understood Documentation/SubmittingPatches and send your patch to +linux-watchdog@vger.kernel.org. We are looking forward to it :) + diff --git a/Documentation/watchdog/watchdog-kernel-api.txt b/Documentation/watchdog/watchdog-kernel-api.txt new file mode 100644 index 0000000..4f7c894 --- /dev/null +++ b/Documentation/watchdog/watchdog-kernel-api.txt @@ -0,0 +1,162 @@ +The Linux WatchDog Timer Driver Core kernel API. +=============================================== +Last reviewed: 22-Jul-2011 + +Wim Van Sebroeck <wim@iguana.be> + +Introduction +------------ +This document does not describe what a WatchDog Timer (WDT) Driver or Device is. +It also does not describe the API which can be used by user space to communicate +with a WatchDog Timer. If you want to know this then please read the following +file: Documentation/watchdog/watchdog-api.txt . + +So what does this document describe? It describes the API that can be used by +WatchDog Timer Drivers that want to use the WatchDog Timer Driver Core +Framework. This framework provides all interfacing towards user space so that +the same code does not have to be reproduced each time. This also means that +a watchdog timer driver then only needs to provide the different routines +(operations) that control the watchdog timer (WDT). + +The API +------- +Each watchdog timer driver that wants to use the WatchDog Timer Driver Core +must #include <linux/watchdog.h> (you would have to do this anyway when +writing a watchdog device driver). This include file contains following +register/unregister routines: + +extern int watchdog_register_device(struct watchdog_device *); +extern void watchdog_unregister_device(struct watchdog_device *); + +The watchdog_register_device routine registers a watchdog timer device. +The parameter of this routine is a pointer to a watchdog_device structure. +This routine returns zero on success and a negative errno code for failure. + +The watchdog_unregister_device routine deregisters a registered watchdog timer +device. The parameter of this routine is the pointer to the registered +watchdog_device structure. + +The watchdog device structure looks like this: + +struct watchdog_device { + const struct watchdog_info *info; + const struct watchdog_ops *ops; + unsigned int bootstatus; + unsigned int timeout; + unsigned int min_timeout; + unsigned int max_timeout; + void *driver_data; + unsigned long status; +}; + +It contains following fields: +* info: a pointer to a watchdog_info structure. This structure gives some + additional information about the watchdog timer itself. (Like it's unique name) +* ops: a pointer to the list of watchdog operations that the watchdog supports. +* timeout: the watchdog timer's timeout value (in seconds). +* min_timeout: the watchdog timer's minimum timeout value (in seconds). +* max_timeout: the watchdog timer's maximum timeout value (in seconds). +* bootstatus: status of the device after booting (reported with watchdog + WDIOF_* status bits). +* driver_data: a pointer to the drivers private data of a watchdog device. + This data should only be accessed via the watchdog_set_drvadata and + watchdog_get_drvdata routines. +* status: this field contains a number of status bits that give extra + information about the status of the device (Like: is the watchdog timer + running/active, is the nowayout bit set, is the device opened via + the /dev/watchdog interface or not, ...). + +The list of watchdog operations is defined as: + +struct watchdog_ops { + struct module *owner; + /* mandatory operations */ + int (*start)(struct watchdog_device *); + int (*stop)(struct watchdog_device *); + /* optional operations */ + int (*ping)(struct watchdog_device *); + unsigned int (*status)(struct watchdog_device *); + int (*set_timeout)(struct watchdog_device *, unsigned int); + long (*ioctl)(struct watchdog_device *, unsigned int, unsigned long); +}; + +It is important that you first define the module owner of the watchdog timer +driver's operations. This module owner will be used to lock the module when +the watchdog is active. (This to avoid a system crash when you unload the +module and /dev/watchdog is still open). +Some operations are mandatory and some are optional. The mandatory operations +are: +* start: this is a pointer to the routine that starts the watchdog timer + device. + The routine needs a pointer to the watchdog timer device structure as a + parameter. It returns zero on success or a negative errno code for failure. +* stop: with this routine the watchdog timer device is being stopped. + The routine needs a pointer to the watchdog timer device structure as a + parameter. It returns zero on success or a negative errno code for failure. + Some watchdog timer hardware can only be started and not be stopped. The + driver supporting this hardware needs to make sure that a start and stop + routine is being provided. This can be done by using a timer in the driver + that regularly sends a keepalive ping to the watchdog timer hardware. + +Not all watchdog timer hardware supports the same functionality. That's why +all other routines/operations are optional. They only need to be provided if +they are supported. These optional routines/operations are: +* ping: this is the routine that sends a keepalive ping to the watchdog timer + hardware. + The routine needs a pointer to the watchdog timer device structure as a + parameter. It returns zero on success or a negative errno code for failure. + Most hardware that does not support this as a separate function uses the + start function to restart the watchdog timer hardware. And that's also what + the watchdog timer driver core does: to send a keepalive ping to the watchdog + timer hardware it will either use the ping operation (when available) or the + start operation (when the ping operation is not available). + (Note: the WDIOC_KEEPALIVE ioctl call will only be active when the + WDIOF_KEEPALIVEPING bit has been set in the option field on the watchdog's + info structure). +* status: this routine checks the status of the watchdog timer device. The + status of the device is reported with watchdog WDIOF_* status flags/bits. +* set_timeout: this routine checks and changes the timeout of the watchdog + timer device. It returns 0 on success, -EINVAL for "parameter out of range" + and -EIO for "could not write value to the watchdog". On success the timeout + value of the watchdog_device will be changed to the value that was just used + to re-program the watchdog timer device. + (Note: the WDIOF_SETTIMEOUT needs to be set in the options field of the + watchdog's info structure). +* ioctl: if this routine is present then it will be called first before we do + our own internal ioctl call handling. This routine should return -ENOIOCTLCMD + if a command is not supported. The parameters that are passed to the ioctl + call are: watchdog_device, cmd and arg. + +The status bits should (preferably) be set with the set_bit and clear_bit alike +bit-operations. The status bits that are defined are: +* WDOG_ACTIVE: this status bit indicates whether or not a watchdog timer device + is active or not. When the watchdog is active after booting, then you should + set this status bit (Note: when you register the watchdog timer device with + this bit set, then opening /dev/watchdog will skip the start operation) +* WDOG_DEV_OPEN: this status bit shows whether or not the watchdog device + was opened via /dev/watchdog. + (This bit should only be used by the WatchDog Timer Driver Core). +* WDOG_ALLOW_RELEASE: this bit stores whether or not the magic close character + has been sent (so that we can support the magic close feature). + (This bit should only be used by the WatchDog Timer Driver Core). +* WDOG_NO_WAY_OUT: this bit stores the nowayout setting for the watchdog. + If this bit is set then the watchdog timer will not be able to stop. + +Note: The WatchDog Timer Driver Core supports the magic close feature and +the nowayout feature. To use the magic close feature you must set the +WDIOF_MAGICCLOSE bit in the options field of the watchdog's info structure. +The nowayout feature will overrule the magic close feature. + +To get or set driver specific data the following two helper functions should be +used: + +static inline void watchdog_set_drvdata(struct watchdog_device *wdd, void *data) +static inline void *watchdog_get_drvdata(struct watchdog_device *wdd) + +The watchdog_set_drvdata function allows you to add driver specific data. The +arguments of this function are the watchdog device where you want to add the +driver specific data to and a pointer to the data itself. + +The watchdog_get_drvdata function allows you to retrieve driver specific data. +The argument of this function is the watchdog device where you want to retrieve +data from. The function retruns the pointer to the driver specific data. diff --git a/Documentation/x86/entry_64.txt b/Documentation/x86/entry_64.txt new file mode 100644 index 0000000..bc7226e --- /dev/null +++ b/Documentation/x86/entry_64.txt @@ -0,0 +1,95 @@ +This file documents some of the kernel entries in +arch/x86/kernel/entry_64.S. A lot of this explanation is adapted from +an email from Ingo Molnar: + +http://lkml.kernel.org/r/<20110529191055.GC9835%40elte.hu> + +The x86 architecture has quite a few different ways to jump into +kernel code. Most of these entry points are registered in +arch/x86/kernel/traps.c and implemented in arch/x86/kernel/entry_64.S +and arch/x86/ia32/ia32entry.S. + +The IDT vector assignments are listed in arch/x86/include/irq_vectors.h. + +Some of these entries are: + + - system_call: syscall instruction from 64-bit code. + + - ia32_syscall: int 0x80 from 32-bit or 64-bit code; compat syscall + either way. + + - ia32_syscall, ia32_sysenter: syscall and sysenter from 32-bit + code + + - interrupt: An array of entries. Every IDT vector that doesn't + explicitly point somewhere else gets set to the corresponding + value in interrupts. These point to a whole array of + magically-generated functions that make their way to do_IRQ with + the interrupt number as a parameter. + + - APIC interrupts: Various special-purpose interrupts for things + like TLB shootdown. + + - Architecturally-defined exceptions like divide_error. + +There are a few complexities here. The different x86-64 entries +have different calling conventions. The syscall and sysenter +instructions have their own peculiar calling conventions. Some of +the IDT entries push an error code onto the stack; others don't. +IDT entries using the IST alternative stack mechanism need their own +magic to get the stack frames right. (You can find some +documentation in the AMD APM, Volume 2, Chapter 8 and the Intel SDM, +Volume 3, Chapter 6.) + +Dealing with the swapgs instruction is especially tricky. Swapgs +toggles whether gs is the kernel gs or the user gs. The swapgs +instruction is rather fragile: it must nest perfectly and only in +single depth, it should only be used if entering from user mode to +kernel mode and then when returning to user-space, and precisely +so. If we mess that up even slightly, we crash. + +So when we have a secondary entry, already in kernel mode, we *must +not* use SWAPGS blindly - nor must we forget doing a SWAPGS when it's +not switched/swapped yet. + +Now, there's a secondary complication: there's a cheap way to test +which mode the CPU is in and an expensive way. + +The cheap way is to pick this info off the entry frame on the kernel +stack, from the CS of the ptregs area of the kernel stack: + + xorl %ebx,%ebx + testl $3,CS+8(%rsp) + je error_kernelspace + SWAPGS + +The expensive (paranoid) way is to read back the MSR_GS_BASE value +(which is what SWAPGS modifies): + + movl $1,%ebx + movl $MSR_GS_BASE,%ecx + rdmsr + testl %edx,%edx + js 1f /* negative -> in kernel */ + SWAPGS + xorl %ebx,%ebx +1: ret + +and the whole paranoid non-paranoid macro complexity is about whether +to suffer that RDMSR cost. + +If we are at an interrupt or user-trap/gate-alike boundary then we can +use the faster check: the stack will be a reliable indicator of +whether SWAPGS was already done: if we see that we are a secondary +entry interrupting kernel mode execution, then we know that the GS +base has already been switched. If it says that we interrupted +user-space execution then we must do the SWAPGS. + +But if we are in an NMI/MCE/DEBUG/whatever super-atomic entry context, +which might have triggered right after a normal entry wrote CS to the +stack but before we executed SWAPGS, then the only safe way to check +for GS is the slower method: the RDMSR. + +So we try only to mark those entry methods 'paranoid' that absolutely +need the more expensive check for the GS base - and we generate all +'normal' entry points with the regular (faster) entry macros. diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt index d6498e3..f33a936 100644 --- a/Documentation/x86/x86_64/mm.txt +++ b/Documentation/x86/x86_64/mm.txt @@ -12,6 +12,8 @@ ffffc90000000000 - ffffe8ffffffffff (=45 bits) vmalloc/ioremap space ffffe90000000000 - ffffe9ffffffffff (=40 bits) hole ffffea0000000000 - ffffeaffffffffff (=40 bits) virtual memory map (1TB) ... unused hole ... +ffffff0000000000 - ffffff7fffffffff (=39 bits) %esp fixup stacks +... unused hole ... ffffffff80000000 - ffffffffa0000000 (=512 MB) kernel text mapping, from phys 0 ffffffffa0000000 - fffffffffff00000 (=1536 MB) module mapping space diff --git a/Documentation/zh_CN/HOWTO b/Documentation/zh_CN/HOWTO index faf976c..56ceb05 100644 --- a/Documentation/zh_CN/HOWTO +++ b/Documentation/zh_CN/HOWTO @@ -237,7 +237,7 @@ kernel.org网站的pub/linux/kernel/v2.6/目录下找到它。它的开发遵循 如果没有2.6.x.y版本内核存在，那么最新的2.6.x版本内核就相当于是当前的稳定 版内核。 -2.6.x.y版本由“稳定版”小组（邮件地址<stable@kernel.org>）维护，一般隔周发 +2.6.x.y版本由“稳定版”小组（邮件地址<stable@vger.kernel.org>）维护，一般隔周发 布新版本。 内核源码中的Documentation/stable_kernel_rules.txt文件具体描述了可被稳定 diff --git a/Documentation/zh_CN/SubmitChecklist b/Documentation/zh_CN/SubmitChecklist deleted file mode 100644 index 951415b..0000000 --- a/Documentation/zh_CN/SubmitChecklist +++ /dev/null @@ -1,109 +0,0 @@ -Chinese translated version of Documentation/SubmitChecklist - -If you have any comment or update to the content, please contact the -original document maintainer directly. However, if you have a problem -communicating in English you can also ask the Chinese maintainer for -help. Contact the Chinese maintainer if this translation is outdated -or if there is a problem with the translation. - -Chinese maintainer: Harry Wei <harryxiyou@gmail.com> ---------------------------------------------------------------------- -Documentation/SubmitChecklist ķ - -ۻ±ĵݣֱϵԭĵάߡʹӢ -ѵĻҲİά²ʱ߷ -⣬ϵİάߡ - -İάߣ Harry Wei <harryxiyou@gmail.com> -İ淭ߣ Harry Wei <harryxiyou@gmail.com> -İУߣ Harry Wei <harryxiyou@gmail.com> - - -Ϊ ---------------------------------------------------------------------- -Linuxںύ嵥 -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -һЩں˿ӦĻ飬뿴Լں˲ύ -ܵĸ졣 - -ЩdzDocumentation/SubmittingPatchesĵṩԼ -ύLinuxں˲˵ - -1ʹһô#include/ǸܵǸļ - Ҫ붨/Ǹܵͷļ - -2û߸CONFIGѡ =y=m=n - Ҫб뾯/ ҪӾ/ - -2bͨ allnoconfig, allmodconfig - -2cʹ 0=builddir ɹع - -3ͨʹñؽ빤һЩڶCPUϹ - -4ppc64 һܺõļ齻ĿܣΪѡunsigned long - 64λֵʹá - -5Documentation/CodingStyleļϸ㲹 - ʹòΥ(scripts/checkpatch.pl)Աύ - Ӧõ㲹еΥ档 - -6κθ»߸ĶCONFIGѡܴò˵ - -7еKconfigѡ¶Ҫ˵֡ - -8ѾܽصKconfigϡǺͨõ--½ - -9мԡ - -10ʹ'make checkstack''make namespacecheck'飬Ȼҵ⡣ - ע⣺ջ鲻ȷس⣬κεһڶջʹö512ֽ - Ҫġ - -11kernel-docȫںAPIsļҪ̬ĺǰҲν - ʹ'make htmldocs''make mandocs'kernel-docȻκ - ֵ⡣ - -12ѾͨCONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT, - CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES, - CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_SPINLOCK_SLEEPԣͬʱ - ʹܡ - -13Ѿʹû߲ʹ CONFIG_SMP CONFIG_PREEMPTִʱ䡣 - -14ӰIO/DiskȵȣѾͨʹû߲ʹ CONFIG_LBDAF ԡ - -15еcodepathsѾʹlockdepùܡ - -16е/proc¼¶ҪļDocumentation/Ŀ¼¡ - -17еں¶¼Documentation/kernel-parameters.txtļС - -18еģ¶MODULE_PARM_DESC()¼ - -19еûռӿڸ¶¼Documentation/ABI/鿴Documentation/ABI/README - ԻøϢıûռӿڵIJӦñʼlinux-api@vger.kernel.org - -20DzǶͨ`make headers_check' - -21Ѿͨslabpage-allocationʧܼ顣鿴Documentation/fault-injection/ - -22¼ԴѾͨ`gcc -W'ʹ"make EXTRA_CFLAGS=-W"롣ܶෳգ - ǶѰ©洦:"warning: comparison between signed and unsigned" - -23ϲ-mmٲԣȷǷͲеһԼVMVFS - ϵͳи仯 - -24еڴ{e.g., barrier(), rmb(), wmb()}ҪԴеһעǶǸʲô - Լԭ - -25κƵIJӣҲҪDocumentation/ioctl/ioctl-number.txt - -26ĸĴʹκεںAPIskconfigйϵĹܣҪ - ʹصkconfigŹرգ and/or =mѡṩ[ͬһʱ䲻õĶã - ] - - CONFIG_SMP, CONFIG_SYSFS, CONFIG_PROC_FS, CONFIG_INPUT, CONFIG_PCI, - CONFIG_BLOCK, CONFIG_PM, CONFIG_HOTPLUG, CONFIG_MAGIC_SYSRQ, - CONFIG_NET, CONFIG_INET=n (һʹ CONFIG_NET=y) diff --git a/Documentation/zh_CN/email-clients.txt b/Documentation/zh_CN/email-clients.txt index 5d65e32..b9a1a3e 100644 --- a/Documentation/zh_CN/email-clients.txt +++ b/Documentation/zh_CN/email-clients.txt @@ -1,4 +1,4 @@ -锘?Chinese translated version of Documentation/email-clients.txt +Chinese translated version of Documentation/email-clients.txt If you have any comment or update to the content, please contact the original document maintainer directly. However, if you have a problem @@ -8,203 +8,203 @@ or if there is a problem with the translation. Chinese maintainer: Harry Wei <harryxiyou@gmail.com> --------------------------------------------------------------------- -Documentation/email-clients.txt ???涓????缈昏?? +Documentation/email-clients.txt 的中文翻译 -濡??????宠??璁烘????存?版???????????瀹癸??璇风?存?ヨ??绯诲?????妗ｇ??缁存?よ?????濡????浣?浣跨?ㄨ?辨?? -浜ゆ???????伴?剧??璇?锛?涔????浠ュ??涓???????缁存?よ??姹???┿??濡???????缈昏????存?颁???????舵?????缈? -璇?瀛???ㄩ??棰?锛?璇疯??绯讳腑??????缁存?よ????? +如果想评论或更新本文的内容，请直接联系原文档的维护者。如果你使用英文 +交流有困难的话，也可以向中文版维护者求助。如果本翻译更新不及时或者翻 +译存在问题，请联系中文版维护者。 -涓???????缁存?よ??锛? 璐惧??濞? Harry Wei <harryxiyou@gmail.com> -涓???????缈昏?????锛? 璐惧??濞? Harry Wei <harryxiyou@gmail.com> -涓?????????¤?????锛? Yinglin Luan <synmyth@gmail.com> +中文版维护者： 贾威威 Harry Wei <harryxiyou@gmail.com> +中文版翻译者： 贾威威 Harry Wei <harryxiyou@gmail.com> +中文版校译者： Yinglin Luan <synmyth@gmail.com> Xiaochen Wang <wangxiaochen0@gmail.com> yaxinsn <yaxinsn@163.com> -浠ヤ??涓烘?ｆ?? +以下为正文 --------------------------------------------------------------------- -Linux???浠跺?㈡?风?????缃?淇℃?? +Linux邮件客户端配置信息 ====================================================================== -?????????缃? +普通配置 ---------------------------------------------------------------------- -Linux?????歌ˉ涓???????杩????浠惰?????浜ょ??锛????濂芥??琛ヤ??浣?涓洪??浠朵????????宓?????????????浜?缁存?よ?? -??ユ?堕??浠讹??浣???????浠剁?????瀹规?煎??搴?璇ユ??"text/plain"?????惰??锛????浠朵????????涓?璧???????锛? -???涓鸿??浼?浣胯ˉ涓????寮???ㄩ?ㄥ????ㄨ??璁鸿??绋?涓???????寰???伴?俱?? +Linux内核补丁是通过邮件被提交的，最好把补丁作为邮件体的内嵌文本。有些维护者 +接收附件，但是附件的内容格式应该是"text/plain"。然而，附件一般是不赞成的， +因为这会使补丁的引用部分在评论过程中变的很困难。 -??ㄦ?ュ?????Linux?????歌ˉ涓???????浠跺?㈡?风????ㄥ?????琛ヤ????跺??璇ュ??浜?????????????濮???舵?????渚?濡?锛? -浠?浠?涓???芥?瑰?????????????ゅ?惰〃绗???????绌烘?硷???????虫????ㄦ??涓?琛????寮?澶存?????缁?灏俱?? +用来发送Linux内核补丁的邮件客户端在发送补丁时应该处于文本的原始状态。例如， +他们不能改变或者删除制表符或者空格，甚至是在每一行的开头或者结尾。 -涓?瑕????杩?"format=flowed"妯″????????琛ヤ?????杩???蜂??寮?璧蜂?????棰????浠ュ?????瀹崇?????琛???? +不要通过"format=flowed"模式发送补丁。这样会引起不可预期以及有害的断行。 -涓?瑕?璁╀????????浠跺?㈡?风??杩?琛??????ㄦ?㈣?????杩???蜂??浼???村??浣????琛ヤ????? +不要让你的邮件客户端进行自动换行。这样也会破坏你的补丁。 -???浠跺?㈡?风??涓???芥?瑰???????????瀛?绗????缂??????瑰?????瑕??????????琛ヤ???????芥??ASCII??????UTF-8缂??????瑰??锛? -濡????浣?浣跨??UTF-8缂??????瑰???????????浠讹????ｄ??浣?灏?浼???垮??涓?浜??????藉????????瀛?绗???????棰???? +邮件客户端不能改变文本的字符集编码方式。要发送的补丁只能是ASCII或者UTF-8编码方式， +如果你使用UTF-8编码方式发送邮件，那么你将会避免一些可能发生的字符集问题。 -???浠跺?㈡?风??搴?璇ュ舰???骞朵??淇???? References: ?????? In-Reply-To: ???棰?锛???ｄ?? -???浠惰??棰?灏变??浼?涓??????? +邮件客户端应该形成并且保持 References: 或者 In-Reply-To: 标题，那么 +邮件话题就不会中断。 -澶???剁??甯?(?????????璐寸??甯?)???甯镐????界?ㄤ??琛ヤ??锛????涓哄?惰〃绗?浼?杞????涓虹┖??笺??浣跨??xclipboard, xclip -??????xcutsel涔?璁稿??浠ワ??浣???????濂芥??璇?涓?涓?????????垮??浣跨?ㄥ????剁??甯???? +复制粘帖(或者剪贴粘帖)通常不能用于补丁，因为制表符会转换为空格。使用xclipboard, xclip +或者xcutsel也许可以，但是最好测试一下或者避免使用复制粘帖。 -涓?瑕???ㄤ娇???PGP/GPG缃插????????浠朵腑??????琛ヤ?????杩???蜂??浣垮??寰?澶???????涓???借?诲??????????ㄤ??浣????琛ヤ????? -锛?杩?涓????棰?搴?璇ユ?????浠ヤ慨澶????锛? +不要在使用PGP/GPG署名的邮件中包含补丁。这样会使得很多脚本不能读取和适用于你的补丁。 +（这个问题应该是可以修复的） -??ㄧ???????搁??浠跺??琛ㄥ?????琛ヤ??涔????锛?缁????宸卞?????涓?涓?琛ヤ?????涓?涓???????涓绘??锛?淇?瀛???ユ?跺?扮?? -???浠讹??灏?琛ヤ?????'patch'??戒护???涓?锛?濡??????????浜?锛????缁??????搁??浠跺??琛ㄥ???????? +在给内核邮件列表发送补丁之前，给自己发送一个补丁是个不错的主意，保存接收到的 +邮件，将补丁用'patch'命令打上，如果成功了，再给内核邮件列表发送。 -涓?浜????浠跺?㈡?风?????绀? +一些邮件客户端提示 ---------------------------------------------------------------------- -杩????缁???轰??浜?璇?缁????MUA???缃????绀猴?????浠ョ?ㄤ??缁?Linux?????稿?????琛ヤ?????杩?浜?骞朵???????虫?? -?????????杞?浠跺?????缃???荤????? +这里给出一些详细的MUA配置提示，可以用于给Linux内核发送补丁。这些并不意味是 +所有的软件包配置总结。 -璇存??锛? -TUI = 浠ユ?????涓哄?虹???????ㄦ?锋?ュ?? -GUI = ??惧舰?????㈢?ㄦ?锋?ュ?? +说明： +TUI = 以文本为基础的用户接口 +GUI = 图形界面用户接口 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Alpine (TUI) -???缃????椤癸?? -???"Sending Preferences"??ㄥ??锛? +配置选项： +在"Sending Preferences"部分： -- "Do Not Send Flowed Text"蹇?椤诲????? -- "Strip Whitespace Before Sending"蹇?椤诲?抽?? +- "Do Not Send Flowed Text"必须开启 +- "Strip Whitespace Before Sending"必须关闭 -褰???????浠舵?讹????????搴?璇ユ?惧?ㄨˉ涓?浼???虹?扮????版?癸????跺?????涓?CTRL-R缁???????锛?浣挎??瀹???? -琛ヤ?????浠跺????ュ?伴??浠朵腑??? +当写邮件时，光标应该放在补丁会出现的地方，然后按下CTRL-R组合键，使指定的 +补丁文件嵌入到邮件中。 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Evolution (GUI) -涓?浜?寮????????????????浣跨?ㄥ????????琛ヤ?? +一些开发者成功的使用它发送补丁 -褰??????╅??浠堕??椤癸??Preformat - 浠?Format->Heading->Preformatted (Ctrl-7)??????宸ュ?锋?? +当选择邮件选项：Preformat + 从Format->Heading->Preformatted (Ctrl-7)或者工具栏 -??跺??浣跨??锛? - Insert->Text File... (Alt-n x)?????ヨˉ涓????浠躲?? +然后使用： + Insert->Text File... (Alt-n x)插入补丁文件。 -浣?杩????浠?"diff -Nru old.c new.c | xclip"锛???????Preformat锛???跺??浣跨?ㄤ腑??撮??杩?琛?绮?甯???? +你还可以"diff -Nru old.c new.c | xclip"，选择Preformat，然后使用中间键进行粘帖。 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Kmail (GUI) -涓?浜?寮????????????????浣跨?ㄥ????????琛ヤ????? +一些开发者成功的使用它发送补丁。 -榛?璁よ?剧疆涓?涓?HTML??煎??????????????锛?涓?瑕??????ㄥ????? +默认设置不为HTML格式是合适的；不要启用它。 -褰?涔????涓?灏????浠剁????跺??锛???ㄩ??椤逛?????涓?瑕??????╄????ㄦ?㈣????????涓????缂虹?瑰氨???浣???ㄩ??浠朵腑杈???ョ??浠讳???????? -??戒??浼?琚??????ㄦ?㈣??锛????姝や??蹇?椤诲?ㄥ?????琛ヤ??涔?????????ㄦ?㈣????????绠?????????规??灏辨???????ㄨ????ㄦ?㈣????ヤ功??????浠讹?? -??跺?????瀹?淇?瀛?涓鸿??绋裤??涓????浣???ㄨ??绋夸腑???娆℃??寮?瀹?锛?瀹?宸茬????ㄩ?ㄨ????ㄦ?㈣??浜?锛???ｄ??浣???????浠惰?界?舵病??? -?????╄????ㄦ?㈣??锛?浣????杩?涓?浼?澶卞?诲凡???????????ㄦ?㈣????? +当书写一封邮件的时候，在选项下面不要选择自动换行。唯一的缺点就是你在邮件中输入的任何文本 +都不会被自动换行，因此你必须在发送补丁之前手动换行。最简单的方法就是启用自动换行来书写邮件， +然后把它保存为草稿。一旦你在草稿中再次打开它，它已经全部自动换行了，那么你的邮件虽然没有 +选择自动换行，但是还不会失去已有的自动换行。 -??ㄩ??浠剁??搴????锛??????ヨˉ涓?涔????锛???句??甯哥?ㄧ??琛ヤ??瀹????绗?锛?涓?涓?杩?瀛????(---)??? +在邮件的底部，插入补丁之前，放上常用的补丁定界符：三个连字号(---)。 -??跺?????"Message"????????＄??锛??????╂????ユ??浠讹????ョ????????浣????琛ヤ?????浠躲??杩????涓?涓?棰?澶???????椤癸??浣????浠? -???杩?瀹????缃?浣???????浠跺缓绔?宸ュ?锋????????锛?杩????浠ュ甫涓?"insert file"??炬????? +然后在"Message"菜单条目，选择插入文件，接着选取你的补丁文件。还有一个额外的选项，你可以 +通过它配置你的邮件建立工具栏菜单，还可以带上"insert file"图标。 -浣????浠ュ????ㄥ?伴??杩?GPG???璁伴??浠讹??浣???????宓?琛ヤ?????濂戒??瑕?浣跨??GPG???璁板??浠????浣?涓哄??宓??????????绛惧??琛ヤ??锛? -褰?浠?GPG涓???????7浣?缂??????朵??浣夸??浠?????????村??澶??????? +你可以安全地通过GPG标记附件，但是内嵌补丁最好不要使用GPG标记它们。作为内嵌文本的签发补丁， +当从GPG中提取7位编码时会使他们变的更加复杂。 -濡????浣????瑕?浠ラ??浠剁??褰㈠????????琛ヤ??锛???ｄ??灏卞?抽????瑰?婚??浠讹????跺?????涓?灞???э??绐????"Suggest automatic -display"锛?杩???峰??宓????浠舵?村?规??璁╄?昏???????般?? +如果你非要以附件的形式发送补丁，那么就右键点击附件，然后选中属性，突出"Suggest automatic +display"，这样内嵌附件更容易让读者看到。 -褰?浣?瑕?淇?瀛?灏?瑕?????????????宓???????琛ヤ??锛?浣????浠ヤ??娑???????琛ㄧ????奸????╁?????琛ヤ????????浠讹????跺????冲?婚????? -"save as"???浣????浠ヤ娇??ㄤ??涓?娌℃????存?圭????????琛ヤ????????浠讹??濡????瀹????浠ユ?ｇ‘???褰㈠??缁???????褰?浣?姝ｇ????ㄥ?? -???宸辩??绐???ｄ??涓?瀵????锛???ｆ?舵病??????椤瑰??浠ヤ??瀛????浠?--宸茬?????涓?涓?杩???风??bug琚?姹???ュ?颁??kmail???bugzilla -骞朵??甯????杩?灏?浼?琚?澶??????????浠舵??浠ュ?????瀵规??涓???ㄦ?峰??璇诲???????????琚?淇?瀛????锛????浠ュ?????浣???虫?????浠跺????跺?板?朵????版?癸?? -浣?涓?寰?涓????浠?浠????????????逛负缁?????????翠?????璇汇?? +当你要保存将要发送的内嵌文本补丁，你可以从消息列表窗格选择包含补丁的邮件，然后右击选择 +"save as"。你可以使用一个没有更改的包含补丁的邮件，如果它是以正确的形式组成。当你正真在它 +自己的窗口之下察看，那时没有选项可以保存邮件--已经有一个这样的bug被汇报到了kmail的bugzilla +并且希望这将会被处理。邮件是以只针对某个用户可读写的权限被保存的，所以如果你想把邮件复制到其他地方， +你不得不把他们的权限改为组或者整体可读。 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Lotus Notes (GUI) -涓?瑕?浣跨?ㄥ????? +不要使用它。 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Mutt (TUI) -寰?澶?Linux寮????浜哄??浣跨??mutt瀹㈡?风??锛????浠ヨ?????瀹????瀹?宸ヤ????????甯告??浜???? +很多Linux开发人员使用mutt客户端，所以证明它肯定工作的非常漂亮。 -Mutt涓????甯?缂?杈????锛????浠ヤ??绠′??浣跨?ㄤ??涔?缂?杈???ㄩ?戒??搴?璇ュ甫????????ㄦ??琛????澶у????扮??杈???ㄩ?藉甫??? -涓?涓?"insert file"???椤癸??瀹????浠ラ??杩?涓???瑰?????浠跺??瀹圭????瑰???????ユ??浠躲?? +Mutt不自带编辑器，所以不管你使用什么编辑器都不应该带有自动断行。大多数编辑器都带有 +一个"insert file"选项，它可以通过不改变文件内容的方式插入文件。 -'vim'浣?涓?mutt???缂?杈????锛? +'vim'作为mutt的编辑器： set editor="vi" - 濡????浣跨??xclip锛???插?ヤ互涓???戒护 + 如果使用xclip，敲入以下命令 :set paste - ???涓????涔??????????shift-insert??????浣跨?? + 按中键之前或者shift-insert或者使用 :r filename -濡??????宠?????琛ヤ??浣?涓哄??宓?????????? -(a)ttach宸ヤ?????寰?濂斤??涓?甯????"set paste"??? +如果想要把补丁作为内嵌文本。 +(a)ttach工作的很好，不带有"set paste"。 -???缃????椤癸?? -瀹?搴?璇ヤ互榛?璁よ?剧疆???褰㈠??宸ヤ????? -??惰??锛????"send_charset"璁剧疆涓?"us-ascii::utf-8"涔????涓?涓?涓???????涓绘????? +配置选项： +它应该以默认设置的形式工作。 +然而，把"send_charset"设置为"us-ascii::utf-8"也是一个不错的主意。 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Pine (TUI) -Pine杩???绘??涓?浜?绌烘?煎????????棰?锛?浣????杩?浜???板?ㄥ??璇ラ?借??淇?澶?浜???? +Pine过去有一些空格删减问题，但是这些现在应该都被修复了。 -濡???????浠ワ??璇蜂娇???alpine(pine???缁ф?胯??) +如果可以，请使用alpine(pine的继承者) -???缃????椤癸?? -- ???杩?????????????瑕?娑???ゆ??绋??????? -- "no-strip-whitespace-before-send"???椤逛????????瑕??????? +配置选项： +- 最近的版本需要消除流程文本 +- "no-strip-whitespace-before-send"选项也是需要的。 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Sylpheed (GUI) -- ???宓??????????浠ュ??濂界??宸ヤ??锛???????浣跨?ㄩ??浠讹????? -- ???璁镐娇??ㄥ????ㄧ??缂?杈???ㄣ?? -- 瀵逛?????褰?杈?澶???堕??甯告????? -- 濡???????杩?non-SSL杩???ワ?????娉?浣跨??TLS SMTP????????? -- ??ㄧ?????绐???ｄ腑???涓?涓?寰??????ㄧ??ruler bar??? -- 缁???板?????涓?娣诲????板??灏变??浼?姝ｇ‘???浜?瑙ｆ?剧ず?????? +- 内嵌文本可以很好的工作（或者使用附件）。 +- 允许使用外部的编辑器。 +- 对于目录较多时非常慢。 +- 如果通过non-SSL连接，无法使用TLS SMTP授权。 +- 在组成窗口中有一个很有用的ruler bar。 +- 给地址本中添加地址就不会正确的了解显示名。 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Thunderbird (GUI) -榛?璁ゆ????典??锛?thunderbird寰?瀹规??????????????锛?浣????杩????涓?浜???规?????浠ュ己??跺?????寰???村ソ??? +默认情况下，thunderbird很容易损坏文本，但是还有一些方法可以强制它变得更好。 -- ??ㄧ?ㄦ?峰????疯?剧疆???锛?缁???????瀵诲??锛?涓?瑕???????"Compose messages in HTML format"??? +- 在用户帐号设置里，组成和寻址，不要选择"Compose messages in HTML format"。 -- 缂?杈?浣????Thunderbird???缃?璁剧疆??ヤ娇瀹?涓?瑕????琛?浣跨??锛?user_pref("mailnews.wraplength", 0); +- 编辑你的Thunderbird配置设置来使它不要拆行使用：user_pref("mailnews.wraplength", 0); -- 缂?杈?浣????Thunderbird???缃?璁剧疆锛?浣垮??涓?瑕?浣跨??"format=flowed"??煎??锛?user_pref("mailnews. +- 编辑你的Thunderbird配置设置，使它不要使用"format=flowed"格式：user_pref("mailnews. send_plaintext_flowed", false); -- 浣????瑕?浣?Thunderbird???涓洪???????煎????瑰??锛? - 濡????榛?璁ゆ????典??浣?涔??????????HTML??煎??锛???ｄ?????寰???俱??浠?浠?浠????棰???????涓????妗?涓???????"Preformat"??煎????? - 濡????榛?璁ゆ????典??浣?涔??????????????????煎??锛?浣?涓?寰????瀹???逛负HTML??煎??锛?浠?浠?浣?涓轰??娆℃?х??锛???ヤ功?????扮??娑????锛? - ??跺??寮哄?朵娇瀹??????版???????煎??锛???????瀹?灏变?????琛????瑕?瀹???板??锛???ㄥ??淇＄????炬??涓?浣跨??shift?????ヤ娇瀹????涓?HTML - ??煎??锛???跺?????棰???????涓????妗?涓???????"Preformat"??煎????? +- 你需要使Thunderbird变为预先格式方式： + 如果默认情况下你书写的是HTML格式，那不是很难。仅仅从标题栏的下拉框中选择"Preformat"格式。 + 如果默认情况下你书写的是文本格式，你不得把它改为HTML格式（仅仅作为一次性的）来书写新的消息， + 然后强制使它回到文本格式，否则它就会拆行。要实现它，在写信的图标上使用shift键来使它变为HTML + 格式，然后标题栏的下拉框中选择"Preformat"格式。 -- ???璁镐娇??ㄥ????ㄧ??缂?杈????锛? - ???瀵?Thunderbird???琛ヤ?????绠?????????规??灏辨??浣跨?ㄤ??涓?"external editor"??╁??锛???跺??浣跨?ㄤ????????娆㈢?? - $EDITOR??ヨ?诲???????????骞惰ˉ涓???版?????涓????瑕?瀹???板??锛????浠ヤ??杞藉苟涓?瀹?瑁?杩?涓???╁??锛???跺??娣诲??涓?涓?浣跨?ㄥ????? - ??????View->Toolbars->Customize...??????褰?浣?涔????淇℃???????跺??浠?浠???瑰?诲??灏卞??浠ヤ????? +- 允许使用外部的编辑器： + 针对Thunderbird打补丁最简单的方法就是使用一个"external editor"扩展，然后使用你最喜欢的 + $EDITOR来读取或者合并补丁到文本中。要实现它，可以下载并且安装这个扩展，然后添加一个使用它的 + 按键View->Toolbars->Customize...最后当你书写信息的时候仅仅点击它就可以了。 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ TkRat (GUI) -???浠ヤ娇??ㄥ?????浣跨??"Insert file..."??????澶???ㄧ??缂?杈???ㄣ?? +可以使用它。使用"Insert file..."或者外部的编辑器。 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Gmail (Web GUI) -涓?瑕?浣跨?ㄥ????????琛ヤ????? +不要使用它发送补丁。 -Gmail缃?椤靛?㈡?风???????ㄥ?版????惰〃绗?杞????涓虹┖??笺?? +Gmail网页客户端自动地把制表符转换为空格。 -??界?跺?惰〃绗?杞????涓虹┖??奸??棰????浠ヨ??澶???ㄧ??杈???ㄨВ??筹???????跺??杩?浼?浣跨?ㄥ??杞???㈣?????姣?琛???????涓?78涓?瀛?绗???? +虽然制表符转换为空格问题可以被外部编辑器解决，同时它还会使用回车换行把每行拆分为78个字符。 -???涓?涓????棰????Gmail杩?浼????浠讳??涓????ASCII???瀛?绗????淇℃????逛负base64缂???????瀹????涓?瑗垮????????娆ф床浜虹?????瀛???? +另一个问题是Gmail还会把任何不是ASCII的字符的信息改为base64编码。它把东西变的像欧洲人的名字。 ### diff --git a/Documentation/zh_CN/magic-number.txt b/Documentation/zh_CN/magic-number.txt index 4c4ce85..c278f41 100644 --- a/Documentation/zh_CN/magic-number.txt +++ b/Documentation/zh_CN/magic-number.txt @@ -66,7 +66,7 @@ MKISS_DRIVER_MAGIC 0x04bf mkiss_channel drivers/net/mkiss.h RISCOM8_MAGIC 0x0907 riscom_port drivers/char/riscom8.h SPECIALIX_MAGIC 0x0907 specialix_port drivers/char/specialix_io8.h HDLC_MAGIC 0x239e n_hdlc drivers/char/n_hdlc.c -APM_BIOS_MAGIC 0x4101 apm_user arch/i386/kernel/apm.c +APM_BIOS_MAGIC 0x4101 apm_user arch/x86/kernel/apm_32.c CYCLADES_MAGIC 0x4359 cyclades_port include/linux/cyclades.h DB_MAGIC 0x4442 fc_info drivers/net/iph5526_novram.c DL_MAGIC 0x444d fc_info drivers/net/iph5526_novram.c diff --git a/Documentation/zh_CN/stable_kernel_rules.txt b/Documentation/zh_CN/stable_kernel_rules.txt index b5b9b0a..26ea5ed 100644 --- a/Documentation/zh_CN/stable_kernel_rules.txt +++ b/Documentation/zh_CN/stable_kernel_rules.txt @@ -42,7 +42,7 @@ Documentation/stable_kernel_rules.txt 的中文翻译 向稳定版代码树提交补丁的过程： - - 在确认了补丁符合以上的规则后，将补丁发送到stable@kernel.org。 + - 在确认了补丁符合以上的规则后，将补丁发送到stable@vger.kernel.org。 - 如果补丁被接受到队列里，发送者会收到一个ACK回复，如果没有被接受，收 到的是NAK回复。回复需要几天的时间，这取决于开发者的时间安排。 - 被接受的补丁会被加到稳定版本队列里，等待其他开发者的审查。 |
