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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Dec 2023 11:17:10.2157 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 97327e65-6a5b-4f60-dcba-08dc02166047 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=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: MWH0EPF000971E5.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB8300 From: Wei Huang Add support for struct iommu_ops.dev_{enable/disable}_feat. Please note that the empty feature switches will be populated by subsequent patches. Signed-off-by: Wei Huang Co-developed-by: Suravee Suthikulpanit Signed-off-by: Suravee Suthikulpanit Signed-off-by: Vasant Hegde Reviewed-by: Jason Gunthorpe --- drivers/iommu/amd/iommu.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index fe08b4cf446f..01863eccc6eb 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2830,6 +2830,32 @@ static const struct iommu_dirty_ops amd_dirty_ops = { .read_and_clear_dirty = amd_iommu_read_and_clear_dirty, }; +static int amd_iommu_dev_enable_feature(struct device *dev, + enum iommu_dev_features feat) +{ + int ret; + + switch (feat) { + default: + ret = -EINVAL; + break; + } + return ret; +} + +static int amd_iommu_dev_disable_feature(struct device *dev, + enum iommu_dev_features feat) +{ + int ret; + + switch (feat) { + default: + ret = -EINVAL; + break; + } + return ret; +} + const struct iommu_ops amd_iommu_ops = { .capable = amd_iommu_capable, .domain_alloc = amd_iommu_domain_alloc, @@ -2842,6 +2868,8 @@ const struct iommu_ops amd_iommu_ops = { .is_attach_deferred = amd_iommu_is_attach_deferred, .pgsize_bitmap = AMD_IOMMU_PGSIZES, .def_domain_type = amd_iommu_def_domain_type, + .dev_enable_feat = amd_iommu_dev_enable_feature, + .dev_disable_feat = amd_iommu_dev_disable_feature, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = amd_iommu_attach_device, .map_pages = amd_iommu_map_pages, -- 2.31.1