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 v7: - Added new function "arm_smmu_v3_resource_size" in iort.c to get resource size. - Added new SMMU option "SHARED_IRQ" to enable errata #126 workaround. - Coding style issues fixed. - Suggested changes in arm_smmu_device_probe addressed. - Replaced ACPI_IORT_SMMU_CAVIUM_CN99XX macro with ACPI_IORT_SMMU_V3_CAVIUM_CN99XX Changes since v6: - Changed device tree compatible string to vendor specific. - Rebased on Robin's latest "Update SMMU models for IORT rev. C" v2 patch. https://www.spinics.net/lists/arm-kernel/msg582809.html Changes since v5: - Rebased on Robin's "Update SMMU models for IORT rev. C" patch. https://www.spinics.net/lists/arm-kernel/msg580728.html - Replaced ACPI_IORT_SMMU_V3_CAVIUM_CN99XX macro with ACPI_IORT_SMMU_CAVIUM_CN99XX 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 (2): 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 | 14 +++- drivers/iommu/arm-smmu-v3.c | 93 ++++++++++++++++---- 4 files changed, 95 insertions(+), 20 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
