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* Merge branch 'for-linus' of ↵Linus Torvalds2009-01-031-9/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu: (89 commits) AMD IOMMU: remove now unnecessary #ifdefs AMD IOMMU: prealloc_protection_domains should be static kvm/iommu: fix compile warning AMD IOMMU: add statistics about total number of map requests AMD IOMMU: add statistics about allocated io memory AMD IOMMU: add stats counter for domain tlb flushes AMD IOMMU: add stats counter for single iommu domain tlb flushes AMD IOMMU: add stats counter for cross-page request AMD IOMMU: add stats counter for free_coherent requests AMD IOMMU: add stats counter for alloc_coherent requests AMD IOMMU: add stats counter for unmap_sg requests AMD IOMMU: add stats counter for map_sg requests AMD IOMMU: add stats counter for unmap_single requests AMD IOMMU: add stats counter for map_single requests AMD IOMMU: add stats counter for completion wait events AMD IOMMU: add init code for statistic collection AMD IOMMU: add necessary header defines for stats counting AMD IOMMU: add Kconfig entry for statistic collection code AMD IOMMU: use dev_name in iommu_enable function AMD IOMMU: use calc_devid in prealloc_protection_domains ...
| * AMD IOMMU: use dev_name in iommu_enable functionJoerg Roedel2009-01-031-6/+2
| | | | | | | | | | | | Impact: cleanup Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * AMD IOMMU: convert amd_iommu_isolate to boolJoerg Roedel2009-01-031-3/+4
| | | | | | | | | | | | Impact: cleanup Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* | x86: amd_iommu_init.c: iommu_enable and iommu_enable_event_logging should be ↵Jaswinder Singh Rajput2008-12-291-2/+2
|/ | | | | | | | | | | | | static Impact: cleanup, reduce kernel size a bit, avoid sparse warning Fixes sparse warning: arch/x86/kernel/amd_iommu_init.c:246:13: warning: symbol 'iommu_enable' was not declared. Should it be static? arch/x86/kernel/amd_iommu_init.c:259:13: warning: symbol 'iommu_enable_event_logging' was not declared. Should it be static? Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* Merge branch 'x86/iommu' into x86/coreIngo Molnar2008-12-231-0/+1
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| * Merge branch 'x86/urgent' into x86/iommuIngo Molnar2008-12-011-2/+4
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| * | x86: move GART specific stuff from iommu.h to gart.hJoerg Roedel2008-11-281-0/+1
| | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | AMD IOMMU: set cmd buffer pointers to zero manuallyJoerg Roedel2008-12-171-0/+4
| | | | | | | | | | | | | | | | | | Impact: set cmd buffer head and tail pointers to zero in case nobody else did Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* | | AMD IOMMU: allocate rlookup_table with __GFP_ZEROJoerg Roedel2008-12-161-1/+2
| |/ |/| | | | | | | | | Impact: fix bug which can lead to panic in prealloc_protection_domains() Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* | AMD IOMMU: fix fullflush comparison lengthJoerg Roedel2008-11-181-1/+1
| | | | | | | | | | | | Impact: fix comparison length for 'fullflush' Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* | AMD IOMMU: enable device isolation per defaultJoerg Roedel2008-11-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | Impact: makes device isolation the default for AMD IOMMU Some device drivers showed double-free bugs of DMA memory while testing them with AMD IOMMU. If all devices share the same protection domain this can lead to data corruption and data loss. Prevent this by putting each device into its own protection domain per default. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* | AMD IOMMU: add parameter to disable device isolationJoerg Roedel2008-11-181-0/+2
|/ | | | | | Impact: add a new AMD IOMMU kernel command line parameter Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* amd_iommu: fix nasty bug that caused ILLEGAL_DEVICE_TABLE_ENTRY errorsAndreas Herrmann2008-10-181-1/+1
| | | | | | | | | | | | | | | | | | | | | We are on 64-bit so better use u64 instead of u32 to deal with addresses: static void __init iommu_set_device_table(struct amd_iommu *iommu) { u64 entry; ... entry = virt_to_phys(amd_iommu_dev_table); ... (I am wondering why gcc 4.2.x did not warn about the assignment between u32 and unsigned long.) Cc: iommu@lists.linux-foundation.org Cc: stable@kernel.org Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* x86, amd-iommu: propagate PCI device enabling errorIngo Molnar2008-10-121-3/+1
| | | | | | | | | | | propagate an error in enabling the PCI device. Also eliminates this warning: arch/x86/kernel/amd_iommu_init.c: In function ‘init_iommu_one’: arch/x86/kernel/amd_iommu_init.c:726: warning: ignoring return value of ‘pci_enable_device’, declared with attribute warn_unused_result Signed-off-by: Ingo Molnar <mingo@elte.hu>
* iommu: remove fullflush and nofullflush in IOMMU generic optionFUJITA Tomonori2008-09-221-1/+4
| | | | | | | | | | | | | | | | | This patch against tip/x86/iommu virtually reverts 2842e5bf3115193f05dc9dac20f940e7abf44c1a. But just reverting the commit breaks AMD IOMMU so this patch also includes some fixes. The above commit adds new two options to x86 IOMMU generic kernel boot options, fullflush and nofullflush. But such change that affects all the IOMMUs needs more discussion (all IOMMU parties need the chance to discuss it): http://lkml.org/lkml/2008/9/19/106 Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: use cmd_buf_size when freeing the command bufferJoerg Roedel2008-09-191-1/+2
| | | | | | | | | The command buffer release function uses the CMD_BUF_SIZE macro for get_order. Replace this with iommu->cmd_buf_size which is more reliable about the actual size of the buffer. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: calculate IVHD size with a functionJoerg Roedel2008-09-191-2/+10
| | | | | | | | | The current calculation of the IVHD entry size is hard to read. So move this code to a seperate function to make it more clear what this calculation does. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: remove unnecessary cast to u64 in the init codeJoerg Roedel2008-09-191-1/+1
| | | | | | | | The ctrl variable is only u32 and readl also returns a 32 bit value. So the cast to u64 is pointless. Remove it with this patch. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: free domain bitmap with its allocation orderJoerg Roedel2008-09-191-1/+2
| | | | | | | | | | The amd_iommu_pd_alloc_bitmap is allocated with a calculated order and freed with order 1. This is not a bug since the calculated order always evaluates to 1, but its unclean code. So replace the 1 with the calculation in the release path. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: allow IO page faults from devicesJoerg Roedel2008-09-191-1/+0
| | | | | | | | | | There is a bit in the device entry to suppress all IO page faults generated by a device. This bit was set until now because there was no event logging. Now that there is event logging this patch allows IO page faults from devices to see them in the kernel log. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: enable event loggingJoerg Roedel2008-09-191-0/+8
| | | | | | | | The code to log IOMMU events is in place now. So enable event logging with this patch. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: add event handling codeJoerg Roedel2008-09-191-1/+0
| | | | | | | | This patch adds code for polling and printing out events generated by the AMD IOMMU. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: add MSI interrupt supportJoerg Roedel2008-09-191-1/+98
| | | | | | | | The AMD IOMMU can generate interrupts for various reasons. This patch adds the basic interrupt enabling infrastructure to the driver. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: save pci_dev instead of devidJoerg Roedel2008-09-191-9/+16
| | | | | | | | | We need the pci_dev later anyways to enable MSI for the IOMMU hardware. So remove the devid pointing to the BDF and replace it with the pci_dev structure where the IOMMU is implemented. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: save pci segment from ACPI tablesJoerg Roedel2008-09-191-0/+1
| | | | | | | | This patch adds the pci_seg field to the amd_iommu structure and fills it with the corresponding value from the ACPI table. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: add event buffer allocationJoerg Roedel2008-09-191-0/+29
| | | | | | | | | This patch adds the allocation of a event buffer for each AMD IOMMU in the system. The hardware will log events like device page faults or other errors to this buffer once this is enabled. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* AMD IOMMU: implement lazy IO/TLB flushingJoerg Roedel2008-09-191-1/+6
| | | | | | | | | | The IO/TLB flushing on every unmaping operation is the most expensive part in AMD IOMMU code and not strictly necessary. It is sufficient to do the flush before any entries are reused. This is patch implements lazy IO/TLB flushing which does exactly this. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, AMD IOMMU: initialize dma_ops after sysfs registrationJoerg Roedel2008-08-151-3/+3
| | | | | | | | | | | If sysfs registration fails all memory used by IOMMU is freed. This happens after dma_ops initialization and the functions will access the freed memory then. Fix this by initializing dma_ops after the sysfs registration. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, AMD IOMMU: initialize device table properlyJoerg Roedel2008-08-151-0/+18
| | | | | | | | This patch adds device table initializations which forbids memory accesses for devices per default and disables all page faults. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, AMD IOMMU: include amd_iommu_last_bdf in device initializationJoerg Roedel2008-07-261-2/+2
| | | | | | | | | | | | | All the values read while searching for amd_iommu_last_bdf are defined as inclusive. Let the code handle this value as such. Found by Wei Wang. Thanks Wei. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Cc: Wei Wang <wei.wang2@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
*-. Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', ↵Ingo Molnar2008-07-211-86/+271
|\ \ | | | | | | | | | 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus
| | * x86: make only GART code include gart.hFUJITA Tomonori2008-07-111-1/+1
| |/ |/| | | | | | | | | | | | | | | gart.h has only GART-specific stuff. Only GART code needs it. Other IOMMU stuff should include iommu.h instead of gart.h. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * AMD IOMMU: set iommu for device from ACPI code tooJoerg Roedel2008-07-181-11/+16
| | | | | | | | | | | | | | | | | | | | | | The device<->iommu relationship has to be set from the information in the ACPI table too. This patch adds this logic to the driver. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: replace DEVID macro with a functionJoerg Roedel2008-07-111-4/+5
| | | | | | | | | | | | | | | | | | | | | | This patch replaces the DEVID macro with a function and uses them where apropriate (also in the core code). Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: replace self made size parsing with memparse callJoerg Roedel2008-07-111-14/+4
| | | | | | | | | | | | | | | | | | | | | | This patch replaces the self-made parsing of the amd_iommu_size option with the generic memparse function call. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: replace memset with __GFP_ZERO for table allocationJoerg Roedel2008-07-111-9/+5
| | | | | | | | | | | | | | | | | | | | | | This patch removes the memset from the data structure initialization code and allocate the structures with the __GFP_ZERO flag. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: do runtime list initialization at compile timeJoerg Roedel2008-07-111-6/+2
| | | | | | | | | | | | | | | | | | | | | | This patch changes the list initialization for the iommu list and the unity map list from runtime to compile time. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: use true/false instead of 0/1 for bool valueJoerg Roedel2008-07-111-4/+4
| | | | | | | | | | | | | | | | | | | | | | This patch replaces the integer values used for the bool variable in ACPI scanning code with true and false. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: remove unneeded initializations from command buffer allocationJoerg Roedel2008-07-111-4/+2
| | | | | | | | | | | | | | | | | | | | | | This patch removes an unneeded initialization from the alloc_command_buffer function and replaces a memset with __GFP_ZERO. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: remove unnecessary free checks from init codeJoerg Roedel2008-07-111-17/+10
| | | | | | | | | | | | | | | | | | | | This patch removes unnecessary checks before memory is released. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: replace TBL_SIZE macro with a functionJoerg Roedel2008-07-111-4/+11
| | | | | | | | | | | | | | | | | | | | This patch converts the TBL_SIZE macro in the init code to a function. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: replace UPDATE_LAST_BDF macro with a functionJoerg Roedel2008-07-111-7/+8
| | | | | | | | | | | | | | | | | | | | | | This patch replaces the UPDATE_LAST_BDF macro in the init code with the update_last_devid function. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: add comments to the initialization codeJoerg Roedel2008-07-111-8/+206
| | | | | | | | | | | | | | | | | | | | | | This patch adds some comments to the AMD IOMMU initialization code to increase its readability. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, AMD IOMMU: ignore detection of GART IOMMUJoerg Roedel2008-07-091-1/+1
|/ | | | | | | | | | | | | | | One of the last IOMMU updates covered a bug in the AMD IOMMU code. The early detection code does not succeed if the GART is already detected. This patch fixes this. Cc: Robert Richter <robert.richter@amd.com> Cc: Bhavna Sarathy <Bhavna.Sarathy@amd.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: Joerg Roedel <joerg.roedel@amd.com> Cc: Robert Richter <robert.richter@amd.com> Cc: Bhavna Sarathy <Bhavna.Sarathy@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, AMD IOMMU: remove unnecessary code from the iommu_enable functionJoerg Roedel2008-07-041-3/+0
| | | | | | | | | | | | This code removes a leftover from the iommu_enable function. The ctrl variable is assigned but never used. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Cc: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, AMD IOMMU: don't try to init IOMMU if early detect code did not detect oneJoerg Roedel2008-07-041-0/+6
| | | | | | | | | | | | This patch adds a check if the early detect code has found AMD IOMMU hardware descriptions and does not try to initialize hardware if the check failed. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Cc: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, AMD IOMMU: honor iommu=off instead of amd_iommu=offJoerg Roedel2008-07-041-8/+1
| | | | | | | | | | | | This patch removes the amd_iommu=off kernel parameter and honors the generic iommu=off parameter for the same purpose. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Cc: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, AMD IOMMU: disable suspend/resume with IOMMU enabled (for now)Joerg Roedel2008-06-301-0/+35
| | | | | | | | | | | | | | | | This patch disables suspend/resume on machines with AMD IOMMU enabled. Real suspend/resume support for AMD IOMMU is currently being worked on. Until this is ready it will be disabled to avoid data corruption when the IOMMU is not properly re-enabled at resume. The patch is based on a similar patch for the GART driver written by Pavel Machek. The overall driver merged into tip/master is tested with parallel disk and network loads and showed no problems in a test running for 3 days. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, AMD IOMMU, build fix #2Ingo Molnar2008-06-271-0/+2
| | | | | | | | | | | | fix: arch/x86/kernel/amd_iommu.c: In function ‘amd_iommu_init_dma_ops': arch/x86/kernel/amd_iommu.c:940: error: lvalue required as left operand of assignment arch/x86/kernel/amd_iommu.c:941: error: lvalue required as left operand of assignment due to !CONFIG_GART_IOMMU. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, AMD IOMMU: initialize dma_ops from IOMMU initialization and enable IOMMUsJoerg Roedel2008-06-271-0/+16
| | | | | | | | | | | | | | This patch adds a call to the driver specific dma_ops initialization routine from the AMD IOMMU hardware initialization. Further it adds the necessary code to finally enable AMD IOMMU hardware. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: Sebastian.Biemueller@amd.com Cc: robert.richter@amd.com Cc: joro@8bytes.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
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