arm64/dma-mapping: Implement DMA_ATTR_PRIVILEGED

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The newly added DMA_ATTR_PRIVILEGED is useful for creating mappings that
are only accessible to privileged DMA engines.  Implement it in
dma-iommu.c so that the ARM64 DMA IOMMU mapper can make use of it.

Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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Mitchel Humpherys 2017-01-06 18:58:12 +05:30 • committed by Will Deacon

parent b2fb366425

commit 737c85ca1c

3 changed files with 14 additions and 7 deletions

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include/linux/dma-iommu.h

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