iommu/arm-smmu: handle multi-alias IOMMU groups for PCI devices

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IOMMU groups for PCI devices can correspond to multiple DMA aliases due
to things like ACS and PCI quirks.

This patch extends the ARM SMMU ->add_device callback so that we
consider all of the DMA aliases for a PCI IOMMU group, rather than
creating a separate group for each Requester ID.

Signed-off-by: Will Deacon <will.deacon@arm.com>

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This commit is contained in:

Will Deacon 2015-01-19 14:27:33 +00:00

parent f1d8454869

commit 03edb2264c

1 changed files with 57 additions and 35 deletions

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drivers/iommu/arm-smmu.c

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