iommu: add qcom_iommu for early "B" family devices

An iommu driver for Qualcomm "B" family devices which do implement the ARM SMMU spec, but not in a way that arm-smmu can support.

(I initially added support to arm-smmu, but it was decided that approach was too intrusive and it would be cleaner to have a separate driver.)

I should note that all the dependencies for this driver have been merged since 4.12, and it is the last thing needed for having another fully- enabled (gpu/display/video codec/etc) ARM device that is fully upstream.

These patches can also be found at:

git://people.freedesktop.org/~robclark/linux qcom_iommu-next

https://cgit.freedesktop.org/~robclark/linux/log/?h=qcom_iommu-next

No change since last time.

Rob Clark (3):
Docs: dt: document qcom iommu bindings
iommu: arm-smmu: split out register defines
iommu: add qcom_iommu

Stanimir Varbanov (1):
iommu: qcom: initialize secure page table

 .../devicetree/bindings/iommu/qcom,iommu.txt       | 121 +++
 drivers/iommu/Kconfig                              |  10 +
 drivers/iommu/Makefile                             |   1 +
 drivers/iommu/arm-smmu-regs.h                      | 220 +++++
 drivers/iommu/arm-smmu.c                           | 211 +----
 drivers/iommu/qcom_iommu.c                         | 932 +++++++++++++++++++++
 6 files changed, 1293 insertions(+), 202 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/iommu/qcom,iommu.txt
 create mode 100644 drivers/iommu/arm-smmu-regs.h
 create mode 100644 drivers/iommu/qcom_iommu.c

2.13.0