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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Nov 2025 10:16:10.8394 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3b173a87-744b-44f9-534c-08de268b7f36 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF00002317.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB8129 From: Suravee Suthikulpanit Signed-off-by: Suravee Suthikulpanit Signed-off-by: Sairaj Kodilkar --- linux-headers/linux/iommufd.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/linux-headers/linux/iommufd.h b/linux-headers/linux/iommufd.h index 2105a039551e..c5fcb0396a38 100644 --- a/linux-headers/linux/iommufd.h +++ b/linux-headers/linux/iommufd.h @@ -613,6 +613,24 @@ struct iommu_hw_info_tegra241_cmdqv { __u8 __reserved; }; +/* struct iommu_hw_info_amd - AMD IOMMU device info + * + * @efr : Value of AMD IOMMU Extended Feature Register (EFR) + * @efr2: Value of AMD IOMMU Extended Feature 2 Register (EFR2) + * + * Please See description of these registers in the following sections of + * the AMD I/O Virtualization Technology (IOMMU) Specification. + * (https://www.amd.com/content/dam/amd/en/documents/processor-tech-docs/specifications/48882_IOMMU.pdf) + * + * - MMIO Offset 0030h IOMMU Extended Feature Register + * - MMIO Offset 01A0h IOMMU Extended Feature 2 Register + */ +struct iommu_hw_info_amd { + __aligned_u64 efr; + __aligned_u64 efr2; + __aligned_u64 control_register; +}; + /** * enum iommu_hw_info_type - IOMMU Hardware Info Types * @IOMMU_HW_INFO_TYPE_NONE: Output by the drivers that do not report hardware @@ -622,6 +640,7 @@ struct iommu_hw_info_tegra241_cmdqv { * @IOMMU_HW_INFO_TYPE_ARM_SMMUV3: ARM SMMUv3 iommu info type * @IOMMU_HW_INFO_TYPE_TEGRA241_CMDQV: NVIDIA Tegra241 CMDQV (extension for ARM * SMMUv3) info type + * @IOMMU_HW_INFO_TYPE_AMD: AMD IOMMU info type */ enum iommu_hw_info_type { IOMMU_HW_INFO_TYPE_NONE = 0, @@ -629,6 +648,7 @@ enum iommu_hw_info_type { IOMMU_HW_INFO_TYPE_INTEL_VTD = 1, IOMMU_HW_INFO_TYPE_ARM_SMMUV3 = 2, IOMMU_HW_INFO_TYPE_TEGRA241_CMDQV = 3, + IOMMU_HW_INFO_TYPE_AMD = 4, }; /** -- 2.34.1