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* [PATCH] PCI: remove CONFIG_PCI_NAMESAdrian Bunk2005-09-0814-10521/+15
| | | | | | | This patch removes CONFIG_PCI_NAMES. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PCI: Run PCI driver initialization on local nodeAndi Kleen2005-09-081-1/+30
| | | | | | | | | | | | | | | Run PCI driver initialization on local node Instead of adding messy kmalloc_node()s everywhere run the PCI driver probe on the node local to the device. This would not have helped for IDE, but should for other more clean drivers that do more initialization in probe(). It won't help for drivers that do most of the work on first open (like many network drivers) Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PCI Hotplug: rpaphp: Purify hotplugJohn Rose2005-09-085-193/+104
| | | | | | | | | | | | | | | | | | Currently rpaphp registers the following bus types as hotplug slots: 1) Actual PCI Hotplug slots 2) Embedded/Internal PCI slots 3) PCI Host Bridges The second and third bus types are not actually direct parents of removable adapters. As such, the rpaphp has special case code to fake results for attributes like power, adapter status, etc. This patch removes types 2 and 3 from the rpaphp module. This patch also changes the DLPAR module so that slots can be DLPAR-added/removed without having been designated as hotplug-capable. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PCI Hotplug: rpaphp: Export slot enableJohn Rose2005-09-083-14/+35
| | | | | | | | | | | This patch exports rpaphp_config_pci_adapter() for use by the rpadlpar module. It also changes this function by removing any dependencies on struct slot. The patch also changes the RPA DLPAR-add path to enable newly-added slots in a separate step from that which registers them as hotplug slots. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PCI Hotplug: rpaphp: Remove rpaphp_find_pciJohn Rose2005-09-083-61/+47
| | | | | | | | | The rpaphp module currently uses a fragile method to find a pci device by its device node. This function is unnecessary, so this patch scraps it. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PCI Hotplug: rpaphp: Change slot pci referenceJohn Rose2005-09-083-117/+75
| | | | | | | | | | | | | | | | The slot structure in the rpaphp module currently references the PCI contents of the slot using the PCI device of the parent bridge. This is unnecessary, since the module is actually interested in the subordinate bus of the bridge. The dependency on a PCI bridge device also prohibits the module from registering hotplug slots that have a root bridge as a parent, since root bridges on PPC64 don't have PCI devices. This patch changes struct slot to reference the PCI subsystem using a pci_bus rather than a pci_dev. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PCI Hotplug: rpaphp: Move VIO registrationJohn Rose2005-09-087-271/+88
| | | | | | | | | | | | | | | | Currently, rpaphp registers Virtual I/O slots as hotplug slots. The only purpose of this registration is to ensure that the VIO subsystem is notified of new VIO buses during DLPAR adds. Similarly, rpaphp notifies the VIO subsystem when a VIO bus is DLPAR-removed. The rpaphp module has special case code to fake results for attributes like power, adapter status, etc. The VIO register/unregister functions could just as easily be made from the DLPAR module. This patch moves the VIO registration calls to the DLPAR module, and removes the VIO fluff from rpaphp altogether. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PCI Hotplug: rpaphp: Remove unused stuffJohn Rose2005-09-082-73/+31
| | | | | | | Subject line says it all :) Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge branch 'upstream' of ↵Linus Torvalds2005-09-082-15/+77
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
| * [PATCH] scan all enabled ports on ata_piixHannes Reinecke2005-09-081-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ICH6 spec defines the PORT_ bits as: PORT_ENABLED (R/W): 0 = Disabled. The port is in the off state and cannot detect any devices. 1 = Enabled. The port can transition between the on, partial, and slumber states and can detect devices. PORT_PRESENT (R/O) The status of this bit may change at any time. This bit is cleared when the port is disabled via PORT_ENABLED. This bit is not cleared upon surprise removal of a device. So from a textual view it is not necessary that PORT_PRESENT _must_ be set, especially if a device detection has to be done anyway. And, in fact, this is the view that ACER has been taken with its new Laptops (e.g. Travelmate 4150). And the definition of PORT_ENABLED / PORT_PRESENT is mixed up, btw. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@suse.de> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
| * Merge /spare/repo/linux-2.6/ Jeff Garzik2005-09-08273-14917/+22063
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| * | [PATCH] sata_sis: Add support for SiS182 chipsetArnaud Patard2005-09-071-11/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for the SiS182 sata chipset. This is a minimalistic version of the patch from http://bugme.osdl.org/show_bug.cgi?id=4192. Basically, it add the PCI IDs and handles the change of the 2nd port adress register. Signed-Off-By: Arnaud Patard <apatard@mandriva.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* | | Merge linux-2.6 with linux-acpi-2.6Len Brown2005-09-08517-18542/+30554
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| * | [SCSI] Re-do "final klist fixes"Linus Torvalds2005-09-071-4/+20
| | | | | | | | | | | | | | | With the previous commit that introduces the klist enhancements, we can now re-do 2b7d6a8cb9718fc1d9e826201b64909c44a915f4 again.
| * | [PATCH] fix klist semantics for lists which have elements removed on traversalJames Bottomley2005-09-073-4/+62
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem is that klists claim to provide semantics for safe traversal of lists which are being modified. The failure case is when traversal of a list causes element removal (a fairly common case). The issue is that although the list node is refcounted, if it is embedded in an object (which is universally the case), then the object will be freed regardless of the klist refcount leading to slab corruption because the klist iterator refers to the prior element to get the next. The solution is to make the klist take and release references to the embedding object meaning that the embedding object won't be released until the list relinquishes the reference to it. (akpm: fast-track this because it's needed for the 2.6.13 scsi merge) Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [SCSI] Revert "final klist fixes"Linus Torvalds2005-09-071-20/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | Revert commit 2b7d6a8cb9718fc1d9e826201b64909c44a915f4. The "fix" was known to not even compile. Duh. That's not a fix. That's just stupid. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-for-linus-2.6 Linus Torvalds2005-09-07103-8453/+6028
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| | * \ Merge by hand (conflicts in sd.c)James Bottomley2005-09-0644-707/+2421
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| | | * | [SCSI] unexport scsi_add_timer/scsi_delete_timerChristoph Hellwig2005-09-062-2/+3
| | | | | | | | | | | | | | | | | | | | Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] switch EH thread startup to the kthread APIChristoph Hellwig2005-09-062-42/+10
| | | | | | | | | | | | | | | | | | | | Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] fix SCSI_IOCTL_PROBE_HOSTChristoph Hellwig2005-09-061-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This returns always false with new-style drivers right now. Make it return always true instead, as a host must be present if we are able to call the ioctl (without a host attached there would be no device node to call on..) Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] Universal Xport no attach blacklistAnton Blanchard2005-09-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Fri, Dec 13, 2002 at 12:24:39AM +1100, Anton Blanchard wrote: > We tested 2.5.51 on a ppc64 box, qlogic 2312 and a fastt700 array. I > had CONFIG_SCSI_REPORT_LUNS and unfortunately it thought the management > LUN was a disk: > > Vendor: IBM Model: Universal Xport Rev: 0520 > Type: Direct-Access ANSI SCSI revision: 03 > > ... > > SCSI device sdaj: drive cache: write through > SCSI device sdaj: 40960 512-byte hdwr sectors (21 MB) > sdaj: unknown partition table > Attached scsi disk sdaj at scsi2, channel 0, id 0, lun 31 > > ... > > end_request: I/O error, dev sdaj, sector 0 Three years later... It looks like SGI use the same FC vendor and they already have a workaround for this issue. The following patch adds the IBM version of it. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] sd: pause in sd_spinup_disk for slow USB devicesAlan Stern2005-09-061-5/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a delay tailored for USB flash devices that are slow to initialize their firmware. The symptom is a repeated Unit Attention with ASC=0x28 (Not Ready to Ready transition). The patch will wait for up to 5 seconds for such devices to become ready. Normal devices won't send the repeated Unit Attention sense key and hence won't trigger the patch. This fixes a problem with James Roberts-Thomson's USB device, and I've seen several reports of other devices exhibiting the same symptoms -- presumably they will be helped as well. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] return success after retries in scsi_eh_turAlan Stern2005-09-061-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem lies in the way the error handler uses TEST UNIT READY to tell whether error recovery has succeeded. The scsi_eh_tur function gives up after one round of retrying; after that it decides that more error recovery is needed. However TUR is liable to report sense data indicating a retry is needed when in fact error recovery has succeeded. A typical example might be SK=2, ASC=4, ASCQ=1 (Logical unit in process of becoming ready). The mere fact that we were able to get a sensible reply to the TUR should indicate that the device is working well enough to stop error recovery. I ran across a case back in January where this happened. A CD-ROM drive timed out the INQUIRY command, and a device reset fixed the blockage. But then the drive kept responding with 2/4/1 -- because it was spinning up I suppose -- until the error handler gave up and placed it offline. If the initial INQUIRY had received the 2/4/1 instead, everything would have worked okay. It doesn't seem reasonable for things to fail just because the error handler had started running. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] ibmvscsi: handle large scatter/gather listsJames Bottomley2005-09-062-42/+116
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The maximum size of a scatter-gather list that the current IBM VSCSI Client can handle is 10. This patch adds large scatter-gather support to the client so that it is capable of handling up to SG_ALL(255) number of requests in the scatter-gather list. Signed-off-by: Linda Xie <lxie@us.ibm.com> Acked by: Dave C Boutcher <sleddog@us.ibm.com> Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Update version number to 8.01.00-k.Andrew Vasquez2005-09-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Stop firmware execution at unintialization time.Andrew Vasquez2005-09-044-6/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On ISP24xx parts, stop execution of firmware during ISP tear-down. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Replace schedule_timeout().Andrew Vasquez2005-09-041-14/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Nishanth Aravamudan <nacc@us.ibm.com> Replace schedule_timeout() with msleep()/msleep_interruptible() as appropriate, to guarantee the task delays as expected. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Remove bad call to fc_remove_host() during probe failure.Andrew Vasquez2005-09-041-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fc_remove_host() should only be called after a scsi_host has been successfully added via scsi_add_host() -- any failures while qla2xxx probing would result in an incorrect call to fc_remove_host() during cleanup. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Add host attributes.Andrew Vasquez2005-09-043-0/+136
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Export additional host information via the shost_attrs member in the scsi_host template. Attributes include: driver version, firmware version, ISP serial number, ISP type, ISP product ID, HBA model name, HBA model description, PCI interconnect information, and HBA port state. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Add change_queue_depth/type() API support.Andrew Vasquez2005-09-041-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Remove redundant call to pci_unmap_sg().Andrew Vasquez2005-09-041-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In a corner-case failure where the request-q does not contain enough entries for a given request, pci_unmap_sg() would be called twice. Remove direct call and let the failure-path logic handle the unmapping. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Remove RISC pause/release barriers during flash manipulation.Andrew Vasquez2005-09-041-34/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove unnecessary RISC pause/release barriers during ISP24xx flash manipulation. The ISP24xx can arbitrate flash access requests during RISC executions. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Correct LED scheme definition.Andrew Vasquez2005-09-042-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Original implementation used an overloaded bit in the EFI parameters. The correct bit is BIT_4 of the special_options section of NVRAM. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Simplify redundant target/device reset logic.Andrew Vasquez2005-09-043-56/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove redundant qla2x00_target_reset() function in favour of the equivalent qla2x00_device_reset(). Update callers of old function. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Correct domain/area exclusion logic.Andrew Vasquez2005-09-041-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In an FL topology, limit port recognition to those devices not within the same area and domain of the ISP. The firmware will recogonize such devices during local-loop discovery. Some devices may respond to a PLOGI before they have completed their fabric login or they may not be a public device. In this case they will report: domain == 00 area == 00 alpa == <XX> which is valid. Exclude such devices from local loop discovery. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Add FDMI support.Andrew Vasquez2005-09-048-5/+741
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Export class-of-service (COS) information.Andrew Vasquez2005-09-044-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Export COS information for the fc_host and fc_remote_port objects added by the driver. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] qla2xxx: Use dma_get_required_mask() in determining the 'ideal' DMA mask.Andrew Vasquez2005-09-041-23/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to efficiently utilise the ISP's IOCB request-queue, use the dma_get_required_mask() function to determine the use of command-type 2 or 3 IOCBs when queueing SCSI commands. This applies to ISP2[123]xx chips only, as the ISP24xx uses command-type 7 IOCBs which use 64bit DSDs. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] fusion: whitespace fixesChristoph Hellwig2005-09-043-155/+174
| | | | | | | | | | | | | | | | | | | | | | | | | Acked by: Moore, Eric Dean <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] fusion: endianess fixesChristoph Hellwig2005-09-043-16/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Assorted endianess fixes. I'll work on full endianess annotations later. Acked by: Moore, Eric Dean <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] fusion: update LSI headersChristoph Hellwig2005-09-046-44/+415
| | | | | | | | | | | | | | | | | | | | | | | | | Acked by: Moore, Eric Dean <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] fusion: extended config header supportChristoph Hellwig2005-09-044-44/+81
| | | | | | | | | | | | | | | | | | | | | | | | | Acked by: Moore, Eric Dean <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] aic7xxx: remove aiclib.cChristoph Hellwig2005-09-046-165/+253
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | #include of C files and macro tricks to rename symbols are evil and just cause trouble. Let's doublicate the two functions as they're going to go away soon enough anyway. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] aacraid: bad BUG_ON fixMark Haverkamp2005-09-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This was noticed by Doug Bazamic and the fix found by Mark Salyzyn at Adaptec. There was an error in the BUG_ON() statement that validated the calculated fib size which can cause the driver to panic. Signed-off-by: Mark Haverkamp <markh@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] sg direct io/mmap oops, st syncDouglas Gilbert2005-09-041-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adopts the same solution as proposed by Kai M. in a post titled: "[PATCH] SCSI tape signed/unsigned fix". The fix is in a function that the sg driver borrowed from the st driver so its maintenance is a little easier if the functions remain the same after the fix. - change nr_pages type from unsigned to signed so errors from get_user_pages() call are properly handled Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | This patch fixes in st.c the bug in the signed/unsigned int comparisonJames Bottomley2005-09-041-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | reported by Doug Gilbert and fixed by him in sg.c (see [PATCH] sg direct io/mmap oops). Doug fixed the comparison in sg.c. This fix for st.c does not touch the comparison but makes both arguments signed to remove the problem. The new code is adapted from linux/fs/bio.c. Signed-off-by: Kai Makisara <kai.makisara@kolumbus.fi> Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] embryonic RAID classJames Bottomley2005-08-303-0/+258
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The idea behind a RAID class is to provide a uniform interface to all RAID subsystems (both hardware and software) in the kernel. To do that, I've made this class a transport class that's entirely subsystem independent (although the matching routines have to match per subsystem, as you'll see looking at the code). I put it in the scsi subdirectory purely because I needed somewhere to play with it, but it's not a scsi specific module. I used a fusion raid card as the test bed for this; with that kind of card, this is the type of class output you get: jejb@titanic> ls -l /sys/class/raid_devices/20\:0\:0\:0/ total 0 lrwxrwxrwx 1 root root 0 Aug 16 17:21 component-0 -> ../../../devices/pci0000:80/0000:80:04.0/host20/target20:1:0/20:1:0:0/ lrwxrwxrwx 1 root root 0 Aug 16 17:21 component-1 -> ../../../devices/pci0000:80/0000:80:04.0/host20/target20:1:1/20:1:1:0/ lrwxrwxrwx 1 root root 0 Aug 16 17:21 device -> ../../../devices/pci0000:80/0000:80:04.0/host20/target20:0:0/20:0:0:0/ -r--r--r-- 1 root root 16384 Aug 16 17:21 level -r--r--r-- 1 root root 16384 Aug 16 17:21 resync -r--r--r-- 1 root root 16384 Aug 16 17:21 state So it's really simple: for a SCSI device representing a hardware raid, it shows the raid level, the array state, the resync % complete (if the state is resyncing) and the underlying components of the RAID (these are exposed in fusion on the virtual channel 1). As you can see, this type of information can be exported by almost anything, including software raid. The more difficult trick, of course, is going to be getting it to perform configuration type actions with writable attributes. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] attribute container final klist fixesJames Bottomley2005-08-301-4/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the attribute container deletes from a klist while it's walking it, it is vulnerable to the problem (and fix) here: http://marc.theaimsgroup.com/?l=linux-scsi&m=112485448830217 The attached fixes this (but won't compile without the above). It also fixes the logical reversal in the traversal loop which meant that we were never actually traversing the loop to hit this bug in the first place. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | | * | [SCSI] correct attribute_container list usageJames Bottomley2005-08-301-22/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of the changes in the attribute_container code in the scsi-misc tree was to add a lock to protect the list of devices per container. This, unfortunately, leads to potential scheduling while atomic problems if there's a sleep in the function called by a trigger. The correct solution is to use the kernel klist infrastructure instead which allows lockless traversal of a list. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
generated by cgit v1.1 at 2024-10-30 12:34:38 +0000