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authorRobin Murphy <robin.murphy@arm.com>2016-01-26 20:13:13 +0300
committerWill Deacon <will.deacon@arm.com>2016-02-17 17:14:57 +0300
commite5fc9753b1a831466be9b45d0bf926eeaa8b84a0 (patch)
tree1ad4075104603c576ba895ab766f79a3222fdd46 /drivers/iommu/Kconfig
parent18558cae0272f8fd9647e69d3fec1565a7949865 (diff)
downloadlinux-e5fc9753b1a831466be9b45d0bf926eeaa8b84a0.tar.xz
iommu/io-pgtable: Add ARMv7 short descriptor support
Add a nearly-complete ARMv7 short descriptor implementation, omitting only a few legacy and CPU-centric aspects which shouldn't be necessary for IOMMU API use anyway. Reviewed-by: Yong Wu <yong.wu@mediatek.com> Tested-by: Yong Wu <yong.wu@mediatek.com> Signed-off-by: Yong Wu <yong.wu@mediatek.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/iommu/Kconfig')
-rw-r--r--drivers/iommu/Kconfig19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index a1e75cba18e0..dc1aaa5d53e8 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -39,6 +39,25 @@ config IOMMU_IO_PGTABLE_LPAE_SELFTEST
If unsure, say N here.
+config IOMMU_IO_PGTABLE_ARMV7S
+ bool "ARMv7/v8 Short Descriptor Format"
+ select IOMMU_IO_PGTABLE
+ depends on HAS_DMA && (ARM || ARM64 || COMPILE_TEST)
+ help
+ Enable support for the ARM Short-descriptor pagetable format.
+ This supports 32-bit virtual and physical addresses mapped using
+ 2-level tables with 4KB pages/1MB sections, and contiguous entries
+ for 64KB pages/16MB supersections if indicated by the IOMMU driver.
+
+config IOMMU_IO_PGTABLE_ARMV7S_SELFTEST
+ bool "ARMv7s selftests"
+ depends on IOMMU_IO_PGTABLE_ARMV7S
+ help
+ Enable self-tests for ARMv7s page table allocator. This performs
+ a series of page-table consistency checks during boot.
+
+ If unsure, say N here.
+
endmenu
config IOMMU_IOVA