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path: root/drivers/iommu/amd_iommu_init.c
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2012-07-16iommu/amd: Fix missing iommu_shutdown initialization in passthrough modeShuah Khan
commit f2f12b6fc032c7b1419fd6db84e2868b5f05a878 upstream. The iommu_shutdown callback is not initialized when the AMD IOMMU driver runs in passthrough mode. Fix that by moving the callback initialization before the check for passthrough mode. Signed-off-by: Shuah Khan <shuah.khan@hp.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-10iommu/amd: Cache pdev pointer to root-bridgeJoerg Roedel
commit c1bf94ec1e12d76838ad485158aecf208ebd8fb9 upstream. At some point pci_get_bus_and_slot started to enable interrupts. Since this function is used in the amd_iommu_resume path it will enable interrupts on resume which causes a warning. The fix will use a cached pointer to the root-bridge to re-enable the IOMMU in case the BIOS is broken. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-22Merge branches 'iommu/fixes', 'arm/tegra' and 'x86/amd' into nextJoerg Roedel
2012-03-22iommu/amd: Fix section mismatchGerard Snitselaar
amd_iommu_enable_interrupts() called in amd_iommu_resume(). Signed-off-by: Gerard Snitselaar <dev@snitselaar.org> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2012-03-15iommu/amd: Move interrupt setup code into seperate functionJoerg Roedel
For interrupt remapping the enablement of the IOMMU MSI interrupt needs to be deferred because the IOMMU itself will be initialized before the io-apics are up and running. So the code to setup the MSI is moved seperated from the hardware-setup routine now. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-03-15iommu/amd: Make sure IOMMU interrupts are re-enabled on resumeJoerg Roedel
Unfortunatly the interrupts for the event log and the peripheral page-faults are only enabled at boot but not re-enabled at resume. Fix that. Cc: stable@vger.kernel.org Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-03-09iommu/amd: Fix double free of mem-region in error-pathJoerg Roedel
When ioremap_nocache fails in iommu initialization the code calls release_mem_region immediatly. But the function is called again when the propagates into the upper init functions leading to a double-free. Fix that. Reported-by: Don Dutile <ddutile@redhat.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-03-08x86/amd: iommu_set_device_table() must not be __initJan Beulich
This function is called from enable_iommus(), which in turn is used from amd_iommu_resume(). Cc: stable@vger.kernel.org Signed-off-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-03-01iommu/amd: Split amd_iommu_init functionJoerg Roedel
The hardware-initializtion part of the AMD IOMMU driver is split out into a seperate function. This function can now be called either from amd_iommu_init() itself or any other place if the hardware needs to be ready earlier. This will be used to implement interrupt remapping for AMD. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-22iommu/amd: Set IOTLB invalidation timeoutJoerg Roedel
To protect the command buffer from hanging when a device does not respond to an IOTLB invalidation, set a timeout of 1s for outstanding IOTLB invalidations. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-22iommu/amd: Remove unnecessary cache flushes in amd_iommu_resumeJoerg Roedel
The caches are already flushed in enable_iommus(), so this flush is not necessary. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12iommu/amd: Add support for IOMMUv2 domain modeJoerg Roedel
This patch adds support for protection domains that implement two-level paging for devices. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12iommu/amd: Put IOMMUv2 capable devices in pt_domainJoerg Roedel
If the device starts to use IOMMUv2 features the dma handles need to stay valid. The only sane way to do this is to use a identity mapping for the device and not translate it by the iommu. This is implemented with this patch. Since this lifts the device-isolation there is also a new kernel parameter which allows to disable that feature. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12iommu/amd: Add iommuv2 flag to struct amd_iommuJoerg Roedel
In mixed IOMMU setups this flag inidicates whether an IOMMU supports the v2 features or not. This patch also adds a global flag together with a function to query that flag from other code. The flag shows if at least one IOMMUv2 is in the system. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12iommu/amd: Enable GT mode when supported by IOMMUJoerg Roedel
This feature needs to be enabled before IOMMUv2 DTEs can be set up. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12iommu/amd: Setup PPR log when supported by IOMMUJoerg Roedel
Allocate and enable a log buffer for peripheral page faults when the IOMMU supports this feature. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12iommu/amd: Get the maximum number of PASIDs supportedJoerg Roedel
Read the number of PASIDs supported by each IOMMU in the system and take the smallest number as the maximum value supported by the IOMMU driver. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12iommu/amd: Convert dev_table_entry to u64Joerg Roedel
Convert the contents of 'struct dev_table_entry' to u64 to allow updating the DTE wit 64bit writes as required by the spec. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-21iommu/amd: Move missing parts to drivers/iommuJoerg Roedel
A few parts of the driver were missing in drivers/iommu. Move them there to have the complete driver in that directory. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>