[v2,0/7] Nvidia Arm SMMUv2 Implementation

Message

Krishna Reddy Sept. 3, 2019, 3:32 a.m. UTC

Changes in v2:
- Prepare arm_smu_flush_ops for override.
- Remove NVIDIA_SMMUv2 and use ARM_SMMUv2 model as T194 SMMU hasn't modified ARM MMU-500.
- Add T194 specific compatible string - "nvidia,tegra194-smmu"
- Remove tlb_sync hook added in v1 and Override arm_smmu_flush_ops->tlb_sync() from implementation.
- Register implementation specific context/global fault hooks directly for irq handling.
- Update global/context interrupt list in DT and releant fault handling code in arm-smmu-nvidia.c.
- Implement reset hook in arm-smmu-nvidia.c to clear irq status and sync tlb.

v1 - https://lkml.org/lkml/2019/8/29/1588

Krishna Reddy (7):
  iommu/arm-smmu: prepare arm_smmu_flush_ops for override
  iommu/arm-smmu: add NVIDIA implementation for dual ARM MMU-500 usage
  dt-bindings: arm-smmu: Add binding for Tegra194 SMMU
  iommu/arm-smmu: Add global/context fault implementation hooks
  arm64: tegra: Add Memory controller DT node on T194
  arm64: tegra: Add DT node for T194 SMMU
  arm64: tegra: enable SMMU for SDHCI and EQOS on T194

 .../devicetree/bindings/iommu/arm,smmu.txt         |   4 +
 MAINTAINERS                                        |   2 +
 arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi     |   4 +
 arch/arm64/boot/dts/nvidia/tegra194.dtsi           |  88 +++++++
 drivers/iommu/Makefile                             |   2 +-
 drivers/iommu/arm-smmu-impl.c                      |   3 +
 drivers/iommu/arm-smmu-nvidia.c                    | 287 +++++++++++++++++++++
 drivers/iommu/arm-smmu.c                           |  27 +-
 drivers/iommu/arm-smmu.h                           |   8 +-
 9 files changed, 413 insertions(+), 12 deletions(-)
 create mode 100644 drivers/iommu/arm-smmu-nvidia.c