Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e5fc9753 authored by Robin Murphy's avatar Robin Murphy Committed by Will Deacon
Browse files

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: default avatarYong Wu <yong.wu@mediatek.com>
Tested-by: default avatarYong Wu <yong.wu@mediatek.com>
Signed-off-by: default avatarYong Wu <yong.wu@mediatek.com>
Signed-off-by: default avatarRobin Murphy <robin.murphy@arm.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 18558cae

drivers/iommu/Kconfig

+19 −0
Original line number Diff line number Diff line
@@ -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

drivers/iommu/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -3,6 +3,7 @@ obj-$(CONFIG_IOMMU_API) += iommu-traces.o 
obj-$(CONFIG_IOMMU_API) += iommu-sysfs.o

obj-$(CONFIG_IOMMU_DMA) += dma-iommu.o

obj-$(CONFIG_IOMMU_IO_PGTABLE) += io-pgtable.o

obj-$(CONFIG_IOMMU_IO_PGTABLE_ARMV7S) += io-pgtable-arm-v7s.o

obj-$(CONFIG_IOMMU_IO_PGTABLE_LPAE) += io-pgtable-arm.o

obj-$(CONFIG_IOMMU_IOVA) += iova.o

obj-$(CONFIG_OF_IOMMU)	+= of_iommu.o

drivers/iommu/io-pgtable-arm-v7s.c

0 → 100644
+849 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/iommu/io-pgtable.c

+3 −0

File changed.

Preview size limit exceeded, changes collapsed.

drivers/iommu/io-pgtable.h

+13 −1

File changed.

Preview size limit exceeded, changes collapsed.