linux-kernel - [v5 0/4] Cavium ThunderX2 SMMUv3 errata workarounds

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Date:   Wed, 10 May 2017 17:01:54 +0530
From:   Geetha sowjanya <gakula@...iumnetworks.com>
To:     will.deacon@....com, robin.murphy@....com,
        lorenzo.pieralisi@....com, hanjun.guo@...aro.org,
        sudeep.holla@....com, iommu@...ts.linux-foundation.org
Cc:     jcm@...hat.com, linux-kernel@...r.kernel.org,
        robert.richter@...ium.com, catalin.marinas@....com,
        sgoutham@...ium.com, linux-arm-kernel@...ts.infradead.org,
        linux-acpi@...r.kernel.org, geethasowjanya.akula@...il.com,
        linu.cherian@...ium.com, Charles.Garcia-Tobin@....com
Subject: [v5 0/4] Cavium ThunderX2 SMMUv3 errata workarounds

From: Linu Cherian <linu.cherian@...ium.com>

Cavium ThunderX2 SMMUv3 implementation has two Silicon Erratas.
1. Errata ID #74
   SMMU register alias Page 1 is not implemented
2. Errata ID #126
   SMMU doesnt support unique IRQ lines and also MSI for gerror,
   eventq and cmdq-sync

The following patchset does software workaround for these two erratas.

This series is based on patchset.
https://www.spinics.net/lists/arm-kernel/msg578443.html

Changes since v4:
 - Replaced all page1 offset macros ARM_SMMU_EVTQ/PRIQ_PROD/CONS with
	arm_smmu_page1_fixup(ARM_SMMU_EVTQ/PRIQ_PROD/CONS, smmu)

Changes since v3:
 - Merged patches 1, 2 and 4 of Version 3.
 - Modified the page1_offset_adjust() and get_irq_flags() implementation as
   suggested by Robin.

Changes since v2:
 - Updated "Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt" document with
   new SMMU option used to enable errata workaround.

Changes since v1:
 - Since the use of MIDR register is rejected and SMMU_IIDR is broken on this
   silicon, as suggested by Will Deacon modified the patches to use ThunderX2
   SMMUv3 IORT model number to enable errata workaround.

Geetha Sowjanya (1):
  iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #126

Linu Cherian (3):
  ACPICA: IORT: Add Cavium ThunderX2 SMMUv3 model definition.
  ACPI/IORT: Fixup SMMUv3 resource size for Cavium ThunderX2 SMMUv3
    model
  iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #74

 Documentation/arm64/silicon-errata.txt             |  2 +
 .../devicetree/bindings/iommu/arm,smmu-v3.txt      |  6 ++
 drivers/acpi/arm64/iort.c                          | 10 ++-
 drivers/iommu/arm-smmu-v3.c                        | 93 +++++++++++++++++-----
 include/acpi/actbl2.h                              |  2 +
 5 files changed, 93 insertions(+), 20 deletions(-)

-- 
1.8.3.1