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From: Tomasz Nowicki <tn@semihalf.com>
To: will@kernel.org, robin.murphy@arm.com, joro@8bytes.org,
	gregory.clement@bootlin.com, robh+dt@kernel.org,
	hannah@marvell.com
Cc: devicetree@vger.kernel.org, catalin.marinas@arm.com,
	linux-kernel@vger.kernel.org, nadavh@marvell.com,
	iommu@lists.linux-foundation.org, mw@semihalf.com,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/4] Add system mmu support for Armada-806
Date: Thu,  2 Jul 2020 22:16:29 +0200	[thread overview]
Message-ID: <20200702201633.22693-1-tn@semihalf.com> (raw)

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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             reply	other threads:[~2020-07-02 20:41 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-02 20:16 Tomasz Nowicki [this message]
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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