[PATCH v2 0/8] Add support for Qualcomm's legacy IOMMU v2
AngeloGioacchino Del Regno
angelogioacchino.delregno at collabora.com
Fri Nov 11 06:59:11 PST 2022
This series adds support for handling "v2" firmware's IOMMU, found
on at least MSM8956 and MSM8976 (some other SoCs also need the same
but I honestly don't remember which ones precisely).
This is strictly required to get functional IOMMUs on these SoCs.
I'm sorry for not performing a much needed schema conversion on
qcom,iommu.txt, but I really didn't have time to do that :-(
This series was tested on Sony Xperia X and X Compact (MSM8956):
ADSP, LPASS, Venus, MSS, MDP and GPU are happy :-)
Changes in v2:
- Added back Marijn's notes (sorry man!)
- Added ARM_SMMU_CB_FSRRESTORE definition
- Changed context bank reset to properly set FSR and FSRRESTORE
AngeloGioacchino Del Regno (8):
dt-bindings: iommu: qcom,iommu: Document qcom,ctx-num property
iommu/qcom: Use the asid read from device-tree if specified
iommu/arm-smmu: Add definition for ARM_SMMU_CB_FSRRESTORE
iommu/qcom: Properly reset the IOMMU context
iommu/qcom: Index contexts by asid number to allow asid 0
dt-bindings: iommu: qcom,iommu: Document QSMMU v2 compatibles
iommu/qcom: Add support for QSMMUv2 and QSMMU-500 secured contexts
dt-bindings: iommu: qcom,iommu: Document MSM8976 compatible
.../devicetree/bindings/iommu/qcom,iommu.txt | 11 ++-
drivers/iommu/arm/arm-smmu/arm-smmu.h | 1 +
drivers/iommu/arm/arm-smmu/qcom_iommu.c | 78 +++++++++++++++----
3 files changed, 71 insertions(+), 19 deletions(-)
--
2.38.1
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