diff options
| author | Robin Murphy | 2016-01-26 18:13:13 +0100 |
|---|---|---|
| committer | Will Deacon | 2016-02-17 15:14:57 +0100 |
| commit | e5fc9753b1a831466be9b45d0bf926eeaa8b84a0 (patch) | |
| tree | 1ad4075104603c576ba895ab766f79a3222fdd46 /drivers/iommu/Kconfig | |
| parent | Linux 4.5-rc4 (diff) | |
| download | kernel-qcow2-linux-e5fc9753b1a831466be9b45d0bf926eeaa8b84a0.tar.gz kernel-qcow2-linux-e5fc9753b1a831466be9b45d0bf926eeaa8b84a0.tar.xz kernel-qcow2-linux-e5fc9753b1a831466be9b45d0bf926eeaa8b84a0.zip | |
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/Kconfig | 19 |
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 |