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path: root/drivers/pci/intel-iommu.c
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2009-03-19PCI: add missing KERN_* constants to printksFrank Seidel
According to kerneljanitors todo list all printk calls (beginning a new line) should have an according KERN_* constant. Those are the missing pieces here for the pci subsystem. Signed-off-by: Frank Seidel <frank@f-seidel.de> Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Tested-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-02-14iommu: fix Intel IOMMU write-buffer flushingDavid Woodhouse
This is the cause of the DMA faults and disk corruption that people have been seeing. Some chipsets neglect to report the RWBF "capability" -- the flag which says that we need to flush the chipset write-buffer when changing the DMA page tables, to ensure that the change is visible to the IOMMU. Override that bit on the affected chipsets, and everything is happy again. Thanks to Chris and Bhavesh and others for helping to debug. Should resolve: https://bugzilla.redhat.com/show_bug.cgi?id=479996 http://bugzilla.kernel.org/show_bug.cgi?id=12578 Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Tested-and-acked-by: Chris Wright <chrisw@sous-sol.org> Reviewed-by: Bhavesh Davda <bhavesh@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05x86: disable intel_iommu support by defaultKyle McMartin
Due to recurring issues with DMAR support on certain platforms. There's a number of filesystem corruption incidents reported: https://bugzilla.redhat.com/show_bug.cgi?id=479996 http://bugzilla.kernel.org/show_bug.cgi?id=12578 Provide a Kconfig option to change whether it is enabled by default. If disabled, it can still be reenabled by passing intel_iommu=on to the kernel. Keep the .config option off by default. Signed-off-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-By: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-13Prevent oops at boot with VT-dDirk Hohndel
With some broken BIOSs when VT-d is enabled, the data structures are filled incorrectly. This can cause a NULL pointer dereference in very early boot. Signed-off-by: Dirk Hohndel <hohndel@linux.intel.com> Acked-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-03intel-iommu: fix bit shift at DOMAIN_FLAG_P2P_MULTIPLE_DEVICESMike Day
Signed-off-by: Mike Day <ncmike@ncultra.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03VT-d: remove now unused intel_iommu_found functionJoerg Roedel
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03VT-d: register functions for the IOMMU APIJoerg Roedel
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03VT-d: adapt domain iova_to_phys function for IOMMU APIJoerg Roedel
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03VT-d: adapt domain map and unmap functions for IOMMU APIJoerg Roedel
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03VT-d: adapt device attach and detach functions for IOMMU APIJoerg Roedel
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03VT-d: adapt domain init and destroy functions for IOMMU APIJoerg Roedel
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Check agaw is sufficient for mapped memoryWeidong Han
When domain is related to multiple iommus, need to check if the minimum agaw is sufficient for the mapped memory Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Change intel iommu APIs of virtual machine domainWeidong Han
These APIs are used by KVM to use VT-d Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Change domain_context_mapping_one for virtual machine domainWeidong Han
vm_domid won't be set in context, find available domain id for a device from its iommu. For a virtual machine domain, a default agaw will be set, and skip top levels of page tables for iommu which has less agaw than default. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Allocation and free functions of virtual machine domainWeidong Han
virtual machine domain is different from native DMA-API domain, implement separate allocation and free functions for virtual machine domain. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Add domain_flush_cacheWeidong Han
Because virtual machine domain may have multiple devices from different iommus, it cannot use __iommu_flush_cache. In some common low level functions, use domain_flush_cache instead of __iommu_flush_cache. On the other hand, in some functions, iommu can is specified or domain cannot be got, still use __iommu_flush_cache Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Add/remove domain device info for virtual machine domainWeidong Han
Add iommu reference count in domain, and add a lock to protect iommu setting including iommu_bmp, iommu_count and iommu_coherency. virtual machine domain may have multiple devices from different iommus, so it needs to do more things when add/remove domain device info. Thus implement separate these functions for virtual machine domain. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Add domain flag DOMAIN_FLAG_VIRTUAL_MACHINEWeidong Han
Add this flag for VT-d used in virtual machine, like KVM. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03iommu coherencyWeidong Han
In dmar_domain, more than one iommus may be included in iommu_bmp. Due to "Coherency" capability may be different across iommus, set this variable to indicate iommu access is coherent or not. Only when all related iommus in a dmar_domain are all coherent, iommu access of this domain is coherent. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03calculate agaw for each iommuWeidong Han
"SAGAW" capability may be different across iommus. Use a default agaw, but if default agaw is not supported in some iommus, choose a less supported agaw. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03iommu bitmap instead of iommu pointer in dmar_domainWeidong Han
In order to support assigning multiple devices from different iommus to a domain, iommu bitmap is used to keep all iommus the domain are related to. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Get iommu from g_iommus for deferred flushWeidong Han
deferred_flush[] uses the iommu seq_id to index, so its iommu is fixed and can get it from g_iommus. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Add global iommu listWeidong Han
Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03change P2P domain flagsWeidong Han
Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03Initialize domain flags to 0Weidong Han
It's random number after the domain is allocated by kmem_cache_alloc Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03intel-iommu: trivially inline DMA PTE macrosMark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: trivially inline context entry macrosMark McLoughlin
Some macros were unused, so I just dropped them: context_fault_disable context_translation_type context_address_root context_address_width context_domain_id Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: move iommu_prepare_gfx_mapping() out of dma_remapping.hMark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: move struct device_domain_info out of dma_remapping.hMark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: move struct dmar_domain def out dma_remapping.hMark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: move DMA PTE defs out of dma_remapping.hMark McLoughlin
DMA_PTE_READ/WRITE are needed by kvm. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: move context entry defs out from dma_remapping.hMark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: move root entry defs from dma_remapping.hMark McLoughlin
We keep the struct root_entry forward declaration for the pointer in struct intel_iommu. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: move DMA_32/64BIT_PFN into intel-iommu.cMark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: make init_dmars() staticMark McLoughlin
init_dmars() is not used outside of drivers/pci/intel-iommu.c Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-03intel-iommu: remove some unused struct intel_iommu fieldsMark McLoughlin
The seg, saved_msg and sysdev fields appear to be unused since before the code was first merged. linux/msi.h is not needed in linux/intel-iommu.h anymore since there is no longer a reference to struct msi_msg. The MSI code in drivers/pci/intel-iommu.c still has linux/msi.h included via linux/dmar.h. linux/sysdev.h isn't needed because there is no reference to struct sys_device. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-11-19intel-iommu: fix compile warningsFUJITA Tomonori
Impact: cleanup I got the following warnings on IA64: linux-2.6/drivers/pci/intel-iommu.c: In function 'init_dmars': linux-2.6/drivers/pci/intel-iommu.c:1658: warning: format '%Lx' expects type 'long long unsigned int', but argument 2 has type 'u64' linux-2.6/drivers/pci/intel-iommu.c:1663: warning: format '%Lx' expects type 'long long unsigned int', but argument 2 has type 'u64' Another victim of int-ll64.h versus int-l64.h confusion between platforms. ->reg_base_addr has a type of u64 - which can only be printed out consistently if we cast its type up to LL. [ Eventually reg_base_addr should be converted to phys_addr_t, for which we have the %pR printk helper - but that is out of the scope of late -rc's. ] Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-20Merge branch 'master' of ↵David Woodhouse
master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/pci/intel-iommu.c
2008-10-20intel-iommu: typo fix and correct word in the commentAmeya Palande
Fix for a typo and and replacing incorrect word in the comment. Signed-off-by: Ameya Palande <2ameya@gmail.com> Cc: "Ashok Raj" <ashok.raj@intel.com> Cc: "Shaohua Li" <shaohua.li@intel.com> Cc: "Anil S Keshavamurthy" <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-18intel-iommu: use coherent_dma_mask in alloc_coherentFUJITA Tomonori
This patch fixes intel-iommu to use dev->coherent_dma_mask in alloc_coherent. Currently, intel-iommu uses dev->dma_mask in alloc_coherent but alloc_coherent is supposed to use coherent_dma_mask. It could break drivers that uses smaller coherent_dma_mask than dma_mask (though the current code works for the majority that use the same mask for coherent_dma_mask and dma_mask). [dwmw2: dma_mask can be bigger than 'unsigned long'] Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-18intel-iommu: IA64 supportFenghua Yu
The current Intel IOMMU code assumes that both host page size and Intel IOMMU page size are 4KiB. The first patch supports variable page size. This provides support for IA64 which has multiple page sizes. This patch also adds some other code hooks for IA64 platform including DMAR_OPERATION_TIMEOUT definition. [dwmw2: some cleanup] Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-17dmar: Use queued invalidation interface for IOTLB and context invalidationYouquan Song
If queued invalidation interface is available and enabled, queued invalidation interface will be used instead of the register based interface. According to Vt-d2 specification, when queued invalidation is enabled, invalidation command submit works only through invalidation queue and not through the command registers interface. Signed-off-by: Youquan Song <youquan.song@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-15VT-d: Changes to support KVMKay, Allen M
This patch extends the VT-d driver to support KVM [Ben: fixed memory pinning] [avi: move dma_remapping.h as well] Signed-off-by: Kay, Allen M <allen.m.kay@intel.com> Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com> Signed-off-by: Amit Shah <amit.shah@qumranet.com> Acked-by: Mark Gross <mgross@linux.intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-22Merge branch 'linus' into x86/x2apicIngo Molnar
2008-07-21Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', ↵Ingo Molnar
'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
2008-07-16Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (72 commits) Revert "x86/PCI: ACPI based PCI gap calculation" PCI: remove unnecessary volatile in PCIe hotplug struct controller x86/PCI: ACPI based PCI gap calculation PCI: include linux/pm_wakeup.h for device_set_wakeup_capable PCI PM: Fix pci_prepare_to_sleep x86/PCI: Fix PCI config space for domains > 0 Fix acpi_pm_device_sleep_wake() by providing a stub for CONFIG_PM_SLEEP=n PCI: Simplify PCI device PM code PCI PM: Introduce pci_prepare_to_sleep and pci_back_from_sleep PCI ACPI: Rework PCI handling of wake-up ACPI: Introduce new device wakeup flag 'prepared' ACPI: Introduce acpi_device_sleep_wake function PCI: rework pci_set_power_state function to call platform first PCI: Introduce platform_pci_power_manageable function ACPI: Introduce acpi_bus_power_manageable function PCI: make pci_name use dev_name PCI: handle pci_name() being const PCI: add stub for pci_set_consistent_dma_mask() PCI: remove unused arch pcibios_update_resource() functions PCI: fix pci_setup_device()'s sprinting into a const buffer ... Fixed up conflicts in various files (arch/x86/kernel/setup_64.c, arch/x86/pci/irq.c, arch/x86/pci/pci.h, drivers/acpi/sleep/main.c, drivers/pci/pci.c, drivers/pci/pci.h, include/acpi/acpi_bus.h) from x86 and ACPI updates manually.
2008-07-12x64, x2apic/intr-remap: Interrupt remapping infrastructureSuresh Siddha
Interrupt remapping (part of Intel Virtualization Tech for directed I/O) infrastructure. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: akpm@linux-foundation.org Cc: arjan@linux.intel.com Cc: andi@firstfloor.org Cc: ebiederm@xmission.com Cc: jbarnes@virtuousgeek.org Cc: steiner@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-12x64, x2apic/intr-remap: Queued invalidation infrastructure (part of VT-d)Suresh Siddha
Queued invalidation (part of Intel Virtualization Technology for Directed I/O architecture) infrastructure. This will be used for invalidating the interrupt entry cache in the case of Interrupt-remapping and IOTLB invalidation in the case of DMA-remapping. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: akpm@linux-foundation.org Cc: arjan@linux.intel.com Cc: andi@firstfloor.org Cc: ebiederm@xmission.com Cc: jbarnes@virtuousgeek.org Cc: steiner@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-12x64, x2apic/intr-remap: move IOMMU_WAIT_OP() macro to intel-iommu.hSuresh Siddha
move IOMMU_WAIT_OP() macro to header file. This will be used by both DMA-remapping and Intr-remapping. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: akpm@linux-foundation.org Cc: arjan@linux.intel.com Cc: andi@firstfloor.org Cc: ebiederm@xmission.com Cc: jbarnes@virtuousgeek.org Cc: steiner@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-12x64, x2apic/intr-remap: code re-structuring, to be used by both DMA and ↵Suresh Siddha
Interrupt remapping Allocate the iommu during the parse of DMA remapping hardware definition structures. And also, introduce routines for device scope initialization which will be explicitly called during dma-remapping initialization. These will be used for enabling interrupt remapping separately from the existing DMA-remapping enabling sequence. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: akpm@linux-foundation.org Cc: arjan@linux.intel.com Cc: andi@firstfloor.org Cc: ebiederm@xmission.com Cc: jbarnes@virtuousgeek.org Cc: steiner@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
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