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iommu/arm-smmu: Prepare for the adreno-smmu implementation

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Do a bit of prep work to add the upcoming adreno-smmu implementation.

Add an hook to allow the implementation to choose which context banks
to allocate.

Move some of the common structs to arm-smmu.h in anticipation of them
being used by the implementations and update some of the existing hooks
to pass more information that the implementation will need.

These modifications will be used by the upcoming Adreno SMMU
implementation to identify the GPU device and properly configure it
for pagetable switching.

Co-developed-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jordan Crouse 2020-09-05 13:04:20 -07:00 • committed by Will Deacon
commit 556db53a71
3 changed files with 73 additions and 55 deletions
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