linux-kernel - [v4 0/4] Cavium ThunderX2 SMMUv3 errata workarounds

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Date:   Tue,  9 May 2017 17:15:10 +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: [v4 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 from 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 from v2:
 Updated "Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt" document with
 new SMMU option used to enable errata workaround.

Changes from 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                        | 109 ++++++++++++++++-----
 include/acpi/actbl2.h                              |   2 +
 5 files changed, 103 insertions(+), 26 deletions(-)

-- 
1.8.3.1