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authorOhad Ben-Cohen <ohad@wizery.com>2011-06-05 19:22:18 +0400
committerJoerg Roedel <joerg.roedel@amd.com>2011-06-21 12:49:29 +0400
commit29b68415e335ba9e0eb6057f9405aa4d9c23efe4 (patch)
tree76d1a8990ab1e5db5f6860262cb52c186d477925 /drivers/iommu/Kconfig
parentb10f127e1a4d8cac5414c6e2b152c205b66c9f16 (diff)
downloadlinux-29b68415e335ba9e0eb6057f9405aa4d9c23efe4.tar.xz
x86: amd_iommu: move to drivers/iommu/
This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/Kconfig')
-rw-r--r--drivers/iommu/Kconfig29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 21a80bfbdb52..9246c5bf25af 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -17,3 +17,32 @@ config MSM_IOMMU
config IOMMU_PGTABLES_L2
def_bool y
depends on MSM_IOMMU && MMU && SMP && CPU_DCACHE_DISABLE=n
+
+# AMD IOMMU support
+config AMD_IOMMU
+ bool "AMD IOMMU support"
+ select SWIOTLB
+ select PCI_MSI
+ select PCI_IOV
+ select IOMMU_API
+ depends on X86_64 && PCI && ACPI
+ ---help---
+ With this option you can enable support for AMD IOMMU hardware in
+ your system. An IOMMU is a hardware component which provides
+ remapping of DMA memory accesses from devices. With an AMD IOMMU you
+ can isolate the the DMA memory of different devices and protect the
+ system from misbehaving device drivers or hardware.
+
+ You can find out if your system has an AMD IOMMU if you look into
+ your BIOS for an option to enable it or if you have an IVRS ACPI
+ table.
+
+config AMD_IOMMU_STATS
+ bool "Export AMD IOMMU statistics to debugfs"
+ depends on AMD_IOMMU
+ select DEBUG_FS
+ ---help---
+ This option enables code in the AMD IOMMU driver to collect various
+ statistics about whats happening in the driver and exports that
+ information to userspace via debugfs.
+ If unsure, say N.