BMC/Intel-BMC/linux.git/drivers/iommu/amd_iommu_init.c, branch dev

iommu/amd: Use iommu core for passthrough mode

2015-07-30T08:28:48+00:00

Remove the AMD IOMMU driver implementation for passthrough mode and rely on the new iommu core features for that. Signed-off-by: Joerg Roedel

Merge tag 'iommu-updates-v4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2015-06-24T01:27:19+00:00

Pull IOMMU updates from Joerg Roedel: "This time with bigger changes than usual: - A new IOMMU driver for the ARM SMMUv3. This IOMMU is pretty different from SMMUv1 and v2 in that it is configured through in-memory structures and not through the MMIO register region. The ARM SMMUv3 also supports IO demand paging for PCI devices with PRI/PASID capabilities, but this is not implemented in the driver yet. - Lots of cleanups and device-tree support for the Exynos IOMMU driver. This is part of the effort to bring Exynos DRM support upstream. - Introduction of default domains into the IOMMU core code. The rationale behind this is to move functionalily out of the IOMMU drivers to common code to get to a unified behavior between different drivers. The patches here introduce a default domain for iommu-groups (isolation groups). A device will now always be attached to a domain, either the default domain or another domain handled by the device driver. The IOMMU drivers have to be modified to make use of that feature. So long the AMD IOMMU driver is converted, with others to follow. - Patches for the Intel VT-d drvier to fix DMAR faults that happen when a kdump kernel boots. When the kdump kernel boots it re-initializes the IOMMU hardware, which destroys all mappings from the crashed kernel. As this happens before the endpoint devices are re-initialized, any in-flight DMA causes a DMAR fault. These faults cause PCI master aborts, which some devices can't handle properly and go into an undefined state, so that the device driver in the kdump kernel fails to initialize them and the dump fails. This is now fixed by copying over the mapping structures (only context tables and interrupt remapping tables) from the old kernel and keep the old mappings in place until the device driver of the new kernel takes over. This emulates the the behavior without an IOMMU to the best degree possible. - A couple of other small fixes and cleanups" * tag 'iommu-updates-v4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (69 commits) iommu/amd: Handle large pages correctly in free_pagetable iommu/vt-d: Don't disable IR when it was previously enabled iommu/vt-d: Make sure copied over IR entries are not reused iommu/vt-d: Copy IR table from old kernel when in kdump mode iommu/vt-d: Set IRTA in intel_setup_irq_remapping iommu/vt-d: Disable IRQ remapping in intel_prepare_irq_remapping iommu/vt-d: Move QI initializationt to intel_setup_irq_remapping iommu/vt-d: Move EIM detection to intel_prepare_irq_remapping iommu/vt-d: Enable Translation only if it was previously disabled iommu/vt-d: Don't disable translation prior to OS handover iommu/vt-d: Don't copy translation tables if RTT bit needs to be changed iommu/vt-d: Don't do early domain assignment if kdump kernel iommu/vt-d: Allocate si_domain in init_dmars() iommu/vt-d: Mark copied context entries iommu/vt-d: Do not re-use domain-ids from the old kernel iommu/vt-d: Copy translation tables from old kernel iommu/vt-d: Detect pre enabled translation iommu/vt-d: Make root entry visible for hardware right after allocation iommu/vt-d: Init QI before root entry is allocated iommu/vt-d: Cleanup log messages ...

iommu/amd: Propagate errors from amd_iommu_init_api

2015-06-11T07:42:24+00:00

This function can fail. Propagate any errors back to the initialization state machine. Signed-off-by: Joerg Roedel

iommu/amd: Implement add_device and remove_device

2015-06-11T07:42:21+00:00

Implement these two iommu-ops call-backs to make use of the initialization and notifier features of the iommu core. Signed-off-by: Joerg Roedel

irq_remapping/amd: Enhance AMD IR driver to support hierarchical irqdomains

2015-04-24T13:36:48+00:00

Signed-off-by: Jiang Liu Acked-by: Joerg Roedel Cc: Konrad Rzeszutek Wilk Cc: David Cohen Cc: Sander Eikelenboom Cc: David Vrabel Cc: Tony Luck Cc: Greg Kroah-Hartman Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas Cc: Benjamin Herrenschmidt Cc: Rafael J. Wysocki Cc: Randy Dunlap Cc: Yinghai Lu Cc: Borislav Petkov Cc: Dimitri Sivanich Cc: Joerg Roedel Link: http://lkml.kernel.org/r/1428905519-23704-12-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner

Merge tag 'iommu-updates-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2015-02-12T17:16:56+00:00

Pull IOMMU updates from Joerg Roedel: "This time with: - Generic page-table framework for ARM IOMMUs using the LPAE page-table format, ARM-SMMU and Renesas IPMMU make use of it already. - Break out the IO virtual address allocator from the Intel IOMMU so that it can be used by other DMA-API implementations too. The first user will be the ARM64 common DMA-API implementation for IOMMUs - Device tree support for Renesas IPMMU - Various fixes and cleanups all over the place" * tag 'iommu-updates-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (36 commits) iommu/amd: Convert non-returned local variable to boolean when relevant iommu: Update my email address iommu/amd: Use wait_event in put_pasid_state_wait iommu/amd: Fix amd_iommu_free_device() iommu/arm-smmu: Avoid build warning iommu/fsl: Various cleanups iommu/fsl: Use %pa to print phys_addr_t iommu/omap: Print phys_addr_t using %pa iommu: Make more drivers depend on COMPILE_TEST iommu/ipmmu-vmsa: Fix IOMMU lookup when multiple IOMMUs are registered iommu: Disable on !MMU builds iommu/fsl: Remove unused fsl_of_pamu_ids[] iommu/fsl: Fix section mismatch iommu/ipmmu-vmsa: Use the ARM LPAE page table allocator iommu: Fix trace_map() to report original iova and original size iommu/arm-smmu: add support for iova_to_phys through ATS1PR iopoll: Introduce memory-mapped IO polling macros iommu/arm-smmu: don't touch the secure STLBIALL register iommu/arm-smmu: make use of generic LPAE allocator iommu: io-pgtable-arm: add non-secure quirk ...

iommu: Update my email address

2015-02-04T15:14:34+00:00

The AMD address is dead for a long time already, replace it with a working one. Signed-off-by: Joerg Roedel

iommu/amd: Fix irq remapping detection logic

2015-01-23T13:32:46+00:00

Commit 7fa1c842caca "iommu/irq_remapping: Change variable disable_irq_remap to be static" returns unconditionally success from the irq remapping prepare callback if the iommu can be initialized. The change assumed that iommu_go_to_state(IOMMU_ACPI_FINISHED) returns a failure if irq remapping is not enabled, but thats not the case. The function returns success when the iommu is initialized to the point which is required for remapping to work. The actual state of the irq remapping feature is reflected in the status variable amd_iommu_irq_remap, which is not considered in the return value. The fix is simple: If the iommu_go_to_state() returns success, evaluate the remapping state amd_iommu_irq_remap and reflect it in the return value. Fixes: 7fa1c842caca iommu/irq_remapping: Change variable disable_irq_remap to be static Reported-and-tested-by: Borislav Petkov Signed-off-by: Thomas Gleixner Cc: Jiang Liu Cc: Joerg Roedel

iommu/irq_remapping: Change variable disable_irq_remap to be static

2015-01-15T10:24:24+00:00

Change variable disable_irq_remap to be static and simplify the code. Signed-off-by: Jiang Liu Tested-by: Joerg Roedel Cc: Tony Luck Cc: iommu@lists.linux-foundation.org Cc: Benjamin Herrenschmidt Cc: Yinghai Lu Cc: Borislav Petkov Link: http://lkml.kernel.org/r/1420615903-28253-16-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner

iommu/irq_remapping: Kill function irq_remapping_supported() and related code

2015-01-15T10:24:23+00:00

Simplify irq_remapping code by killing irq_remapping_supported() and related interfaces. Joerg posted a similar patch at https://lkml.org/lkml/2014/12/15/490, so assume an signed-off from Joerg. Signed-off-by: Jiang Liu Signed-off-by: Joerg Roedel Tested-by: Joerg Roedel Cc: Tony Luck Cc: iommu@lists.linux-foundation.org Cc: H. Peter Anvin Cc: Benjamin Herrenschmidt Cc: Yinghai Lu Cc: Borislav Petkov Cc: David Rientjes Cc: HATAYAMA Daisuke Cc: Jan Beulich Cc: Richard Weinberger Cc: Oren Twaig Link: http://lkml.kernel.org/r/1420615903-28253-14-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner