iommu/arm-smmu: Workaround for ThunderX erratum #27704

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Due to erratum #27704, the CN88xx SMMUv2 implementation supports only
shared ASID and VMID numberspaces.

This patch ensures that ASID and VMIDs are unique across all SMMU
instances on affected Cavium systems.

Signed-off-by: Tirumalesh Chalamarla <tchalamarla@caviumnetworks.com>
Signed-off-by: Akula Geethasowjanya <Geethasowjanya.Akula@caviumnetworks.com>
[will: commit message, comments and formatting]
Signed-off-by: Will Deacon <will.deacon@arm.com>

...

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Tirumalesh Chalamarla 2016-03-04 13:56:09 -08:00 • committed by Will Deacon

parent 4e3e9b6997

commit 1bd37a6835

3 changed files with 30 additions and 11 deletions

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1

Documentation/arm64/silicon-errata.txt

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1

Documentation/devicetree/bindings/iommu/arm,smmu.txt

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39

drivers/iommu/arm-smmu.c

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