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* [PATCH v3 0/4] Add system mmu support for Armada-806
@ 2020-07-02 20:16 Tomasz Nowicki
  2020-07-02 20:16 ` [PATCH v3 1/4] iommu/arm-smmu: Add SMMU ID2 register fixup hook Tomasz Nowicki
                   ` (4 more replies)
  0 siblings, 5 replies; 17+ messages in thread
From: Tomasz Nowicki @ 2020-07-02 20:16 UTC (permalink / raw)
  To: will, robin.murphy, joro, gregory.clement, robh+dt, hannah
  Cc: devicetree, catalin.marinas, linux-kernel, nadavh, iommu, mw,
	linux-arm-kernel

There were already two versions of series to support SMMU for AP806,
including workaround for accessing ARM SMMU 64bit registers.
First [1] by Hanna Hawa and second [2] by Gregory CLEMENT.
Since it got stuck this is yet another try. I incorporated the V2 comments,
mainly by moving workaround code to arm-smmu-impl.c as requested.

For the record, AP-806 can't access SMMU registers with 64bit width,
this patches split the readq/writeq into two 32bit accesses instead
and update DT bindings.

The series was successfully tested on a vanilla v5.8-rc3 kernel and
Intel e1000e PCIe NIC. The same for platform devices like SATA and USB.

[1]: https://lkml.org/lkml/2018/10/15/373
[2]: https://lkml.org/lkml/2019/7/11/426

Hanna Hawa (1):
  iommu/arm-smmu: Workaround for Marvell Armada-AP806 SoC erratum
    #582743

Marcin Wojtas (1):
  arm64: dts: marvell: add SMMU support

Tomasz Nowicki (2):
  iommu/arm-smmu: Add SMMU ID2 register fixup hook
  dt-bindings: arm-smmu: add compatible string for Marvell Armada-AP806
    SMMU-500

 Documentation/arm64/silicon-errata.rst        |  3 ++
 .../devicetree/bindings/iommu/arm,smmu.yaml   |  5 ++
 arch/arm64/boot/dts/marvell/armada-8040.dtsi  | 36 +++++++++++++
 arch/arm64/boot/dts/marvell/armada-ap80x.dtsi | 17 ++++++
 drivers/iommu/arm-smmu-impl.c                 | 52 +++++++++++++++++++
 drivers/iommu/arm-smmu.c                      |  3 ++
 drivers/iommu/arm-smmu.h                      |  1 +
 7 files changed, 117 insertions(+)

-- 
2.17.1

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^ permalink raw reply	[flat|nested] 17+ messages in thread

end of thread, other threads:[~2020-07-14 10:26 UTC | newest]

Thread overview: 17+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-02 20:16 [PATCH v3 0/4] Add system mmu support for Armada-806 Tomasz Nowicki
2020-07-02 20:16 ` [PATCH v3 1/4] iommu/arm-smmu: Add SMMU ID2 register fixup hook Tomasz Nowicki
2020-07-03  8:24   ` Robin Murphy
2020-07-03  9:19     ` Tomasz Nowicki
2020-07-02 20:16 ` [PATCH v3 2/4] iommu/arm-smmu: Workaround for Marvell Armada-AP806 SoC erratum #582743 Tomasz Nowicki
2020-07-03  9:03   ` Robin Murphy
2020-07-03 11:24     ` Tomasz Nowicki
2020-07-02 20:16 ` [PATCH v3 3/4] dt-bindings: arm-smmu: add compatible string for Marvell Armada-AP806 SMMU-500 Tomasz Nowicki
2020-07-03  9:05   ` Robin Murphy
2020-07-03  9:26     ` Tomasz Nowicki
2020-07-13 21:36       ` Rob Herring
2020-07-02 20:16 ` [PATCH v3 4/4] arm64: dts: marvell: add SMMU support Tomasz Nowicki
2020-07-03  9:16   ` Robin Murphy
2020-07-03  9:33     ` Tomasz Nowicki
2020-07-03 10:38       ` Marcin Wojtas
2020-07-14  8:19 ` [PATCH v3 0/4] Add system mmu support for Armada-806 Will Deacon
2020-07-14 10:26   ` Tomasz Nowicki

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