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authorRob Herring <[email protected]>2020-02-24 16:31:29 -0600
committerWill Deacon <[email protected]>2020-03-18 21:37:10 +0000
commit6a481a95d4c198a2dd0a61f8877b92a375757db8 (patch)
treee9e05cfd97261983d82fcaa086fdd5d8fe9f824b /scripts/bpf_helpers_doc.py
parent9e773aee8c3e1b3ba019c5c7f8435aaa836c6130 (diff)
iommu/arm-smmu-v3: Add SMMUv3.2 range invalidation support
Arm SMMUv3.2 adds support for TLB range invalidate operations. Support for range invalidate is determined by the RIL bit in the IDR3 register. The range invalidate is in units of the leaf page size and operates on 1-32 chunks of a power of 2 multiple pages. First, we determine from the size what power of 2 multiple we can use. Then we calculate how many chunks (1-31) of the power of 2 size for the range on the iteration. On each iteration, we move up in size by at least 5 bits. Cc: Jean-Philippe Brucker <[email protected]> Cc: Will Deacon <[email protected]> Cc: Robin Murphy <[email protected]> Cc: Joerg Roedel <[email protected]> Reviewed-by: Eric Auger <[email protected]> Signed-off-by: Rob Herring <[email protected]> Signed-off-by: Will Deacon <[email protected]>
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