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authorJean-Philippe Brucker <jean-philippe@linaro.org>2020-01-15 13:52:36 +0100
committerWill Deacon <will@kernel.org>2020-01-15 17:06:50 +0100
commit73af06f589fe5656b07baa92e390d2d48464b18a (patch)
treeda0fc96d546252f4b3a209d1001a94da8bf6b0c5 /drivers/iommu/mtk_iommu_v1.c
parentiommu/arm-smmu-v3: Prepare for handling arm_smmu_write_ctx_desc() failure (diff)
downloadlinux-73af06f589fe5656b07baa92e390d2d48464b18a.tar.xz
linux-73af06f589fe5656b07baa92e390d2d48464b18a.zip
iommu/arm-smmu-v3: Add second level of context descriptor table
The SMMU can support up to 20 bits of SSID. Add a second level of page tables to accommodate this. Devices that support more than 1024 SSIDs now have a table of 1024 L1 entries (8kB), pointing to tables of 1024 context descriptors (64kB), allocated on demand. Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/mtk_iommu_v1.c')
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