Commit 3b6916b4 authored by Patrick Daly's avatar Patrick Daly Committed by Will Deacon
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ANDROID: iommu/io-pgtable-arm: Add IOMMU_CACHE_ICACHE_OCACHE_NWA 



Allow io-coherent devices to use a inner writeback read/write allocate,
outer writeback read allocate, no-write allocate cache policy. The outer
cache policy affects the behavior of a system cache, at least on qcom
boards which have one.

The rational follows that of IOMMU_SYS_CACHE_ONLY_NWA. Certain gpu
usecases perform better when using a no-write allocate policy.

Rename the IOMMU_SYS_CACHE_* flags to better reflect that they are not
exclusive with IOMMU_CACHE.

Bug: 191811876
Change-Id: Ic91616a148f39fead008a5b87a54ffd781fee734
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
parent 2e289f36
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