[PATCH 00/12] iommu: qcom_iommu: implement support for instances on MSM8974

[Dmitry Baryshkov]

Qualcomm MSM8974 platform has five SMMU instances, used by display, GPU,
Venus, VFE (camera) and JPEG encoder. Each of them follows ARM SMMU v1
spec, however they differ from other Qualcomm platforms in the
implementation-specific registers and also in interaction with TZ.
Venus, MDP and VFE SMMUs are secured and require programming only of
CBs, while GPU and JPEG require full programming.

This series skips IOMMUs which can't be tested right now (VFE and JPEG),
and adds only MDP, GPU and Venus (although untested, it is required for
display to work) SMMU instances.

Note, to get display to work properly one fix is necessary, [1]

[1] https://patch.msgid.link/20260809-msm8974-mmcc-fix-v1-1-50f2dcf18d2e@xxxxxxxxxxxxxxxx

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
---
Dmitry Baryshkov (12):
      dt-bindings: iommu: qcom,iommu: document the MSM8974 IOMMUs
      iommu: arm-smmu: add global register definitions used by the QSMMU
      iommu: qcom_iommu: extract context bank programming into a helper
      iommu: qcom_iommu: support the short-descriptor pagetable format
      iommu: qcom_iommu: handle the SMMU global register space
      iommu: qcom_iommu: support non-TZ-managed instances
      iommu: qcom_iommu: restore context bank state after power collapse
      iommu: qcom_iommu: halt the micro-MMU while programming context banks
      iommu: qcom_iommu: allow faulting transactions to terminate
      iommu: qcom_iommu: program BFP (prefetch) settings
      iommu: qcom_iommu: add the MSM8974 instances
      ARM: dts: qcom: msm8974: add the IOMMUs

 .../devicetree/bindings/iommu/qcom,iommu.yaml      |  16 +-
 arch/arm/boot/dts/qcom/qcom-msm8974.dtsi           |  85 +++-
 drivers/iommu/arm/Kconfig                          |   1 +
 drivers/iommu/arm/arm-smmu/arm-smmu.h              |  10 +
 drivers/iommu/arm/arm-smmu/qcom_iommu.c            | 445 +++++++++++++++++++--
 5 files changed, 517 insertions(+), 40 deletions(-)
---
base-commit: 6c5c106bff878247a9cc7255077aab9040df8bf8
change-id: 20260809-msm8974-iommu-upstream-144b1e2a15f0

Best regards,
--  
With best wishes
Dmitry