[PATCH v2 00/22] Unified SMMU driver among Tegra SoCs

[Hiroshi Doyu]

Hi,

This series provides:

(1) Unified SMMU driver among Tegra SoCs
(2) Multiple Address Space support(MASID) in IOMMU(SMMMU)
(3) Tegra IOMMU'able devices, most of platform devices are IOMMU'able.

There's some discussion[1] about device population order, which can
solve the following patches.

  [HACK] of: dev_node has struct device pointer
  ARM: tegra: Populate AHB/IOMMU earlier than others

Also "ARM: dma-mapping: Drop GFP_COMP for DMA memory allocations" may
not be necessary by [2]

Tested IOMMU functionality with T30 SD/MMC. Any further testing with
T114 and/or other devices would be really appreciated.

v2:
Updated based on Thierry Reding's and Stephen Warren's feedback

v1:
http://lists.infradead.org/pipermail/linux-arm-kernel/2013-June/180267.html

Hiroshi Doyu (22):
  [HACK] of: dev_node has struct device pointer
  ARM: tegra: Populate AHB/IOMMU earlier than others
  ARM: tegra: Create a DT header defining swgroups ID
  ARM: dt: tegra30: iommu: Add "nvidia,swgroup"
  ARM: dt: tegra30: iommu: Add "nvidia,memory-client"
  ARM: dt: tegra114: iommu: Fix IOMMU register address
  ARM: dt: tegra114: iommu: Add "nvidia,swgroups"
  ARM: dt: tegra114: Add "nvidia,memory-client"
  amba: Move AHB to core_initcall
  iommu/tegra: smmu: Move IOMMU to core_initcall
  iommu/tegra: smmu: Add Tegra 114 support
  iommu/tegra: smmu: Select ARM_DMA_USE_IOMMU in Kconfig
  iommu/tegra: smmu: Create default IOVA maps
  iommu/tegra: smmu: Register platform_device to IOMMU dynamically
  iommu/tegra: smmu: Calculate ASID register offset by ID
  iommu/tegra: smmu: Get "nvidia,swgroup" from DT
  iommu/tegra: smmu: Unfied driver for Tegra SoCs
  iommu/tegra: smmu: Use dt-bindings MACRO
  iommu/tegra: smmu: Workaround PCIe IOMMU'able
  iommu/tegra: smmu: Get "nvidia,memory-client" from DT
  iommu/tegra: smmu: Support Multiple ASID
  ARM: dma-mapping: Drop GFP_COMP for DMA memory allocations

 .../bindings/iommu/nvidia,tegra30-smmu.txt         |   20 +-
 arch/arm/boot/dts/tegra114.dtsi                    |   13 +-
 arch/arm/boot/dts/tegra30.dtsi                     |   21 ++
 arch/arm/mach-tegra/tegra.c                        |   22 ++
 arch/arm/mm/dma-mapping.c                          |    7 +
 drivers/amba/tegra-ahb.c                           |    7 +-
 drivers/iommu/Kconfig                              |    1 +
 drivers/iommu/tegra-smmu.c                         |  211 +++++++++++---------
 drivers/of/base.c                                  |   23 +++
 drivers/of/platform.c                              |    8 +
 include/dt-bindings/memory/tegra-swgroup.h         |   50 +++++
 include/linux/of.h                                 |   16 ++
 12 files changed, 296 insertions(+), 103 deletions(-)
 create mode 100644 include/dt-bindings/memory/tegra-swgroup.h

-- 
1.7.9.5

[1] https://lists.ozlabs.org/pipermail/devicetree-discuss/2013-June/thread.html#36542
[2] http://marc.info/?l=linux-tegra&m=137173895620957&w=1