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[00/21] MT8192 IOMMU support

Message ID 20200711064846.16007-1-yong.wu@mediatek.com (mailing list archive)
Headers show
Series MT8192 IOMMU support | expand

Message

Yong Wu (吴勇) July 11, 2020, 6:48 a.m. UTC 
This patch mainly adds support for mt8192 IOMMU and SMI.

mt8192 also is MTK IOMMU gen2 which uses ARM Short-Descriptor translation
table format. The M4U-SMI HW diagram is as below:

                          EMI
                           |
                          M4U
                           |
                      ------------
                       SMI Common
                      ------------
                           |
  +-------+------+------+----------------------+-------+
  |       |      |      |       ......         |       |
  |       |      |      |                      |       |
larb0   larb1  larb2  larb4     ......      larb19   larb20
disp0   disp1   mdp    vdec                   IPE      IPE

All the connections are HW fixed, SW can NOT adjust it.

Comparing with the preview SoC, this patchset also adds two functions:
a) add iova 34 bits support.
b) add multi domains support since several HW has the special iova
region requirement.

this patchset depend on v5.8-rc1 and mt6779 iommu[1].

[1]https://lore.kernel.org/linux-iommu/20200703044127.27438-1-chao.hao@mediatek.com/

Yong Wu (21):
  dt-binding: memory: mediatek: Add a common larb-port header file
  dt-binding: memory: mediatek: Extend LARB_NR_MAX to 32
  dt-binding: memory: mediatek: Add domain definition
  dt-binding: mediatek: Add binding for mt8192 IOMMU and SMI
  iommu/mediatek: Use the common mtk-smi-larb-port.h
  iommu/io-pgtable-arm-v7s: Use ias to check the valid iova in unmap
  iommu/io-pgtable-arm-v7s: Extend PA34 for MediaTek
  iommu/io-pgtable-arm-v7s: Add cfg as a param in some macros
  iommu/io-pgtable-arm-v7s: Quad lvl1 pgtable for MediaTek
  iommu/mediatek: Add device link for smi-common and m4u
  iommu/mediatek: Add power-domain operation
  iommu/mediatek: Add iova reserved function
  iommu/mediatek: Make MTK_IOMMU depend on ARM64
  iommu/mediatek: Add single domain
  iommu/mediatek: Support master use iova over 32bit
  iommu/mediatek: Support up to 34bit iova in tlb invalid
  iommu/mediatek: Support report iova 34bit translation fault in ISR
  iommu/mediatek: Add support for multi domain
  iommu/mediatek: Adjust the structure
  iommu/mediatek: Add mt8192 support
  memory: mtk-smi: Add mt8192 support

 .../bindings/iommu/mediatek,iommu.txt         |   8 +-
 .../mediatek,smi-common.txt                   |   5 +-
 .../memory-controllers/mediatek,smi-larb.txt  |   3 +-
 drivers/iommu/Kconfig                         |   1 +
 drivers/iommu/io-pgtable-arm-v7s.c            |  51 ++--
 drivers/iommu/mtk_iommu.c                     | 265 +++++++++++++++---
 drivers/iommu/mtk_iommu.h                     |  11 +-
 drivers/memory/mtk-smi.c                      |  25 ++
 include/dt-bindings/memory/mt2712-larb-port.h |   2 +-
 include/dt-bindings/memory/mt6779-larb-port.h |   2 +-
 include/dt-bindings/memory/mt8173-larb-port.h |   2 +-
 include/dt-bindings/memory/mt8183-larb-port.h |   2 +-
 include/dt-bindings/memory/mt8192-larb-port.h | 237 ++++++++++++++++
 .../dt-bindings/memory/mtk-smi-larb-port.h    |  22 ++
 include/linux/io-pgtable.h                    |   4 +-
 include/soc/mediatek/smi.h                    |   3 +-
 16 files changed, 565 insertions(+), 78 deletions(-)
 create mode 100644 include/dt-bindings/memory/mt8192-larb-port.h
 create mode 100644 include/dt-bindings/memory/mtk-smi-larb-port.h