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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Jan 2024 12:15:26.1506 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f5567906-68b8-4896-ae3f-08dc1d9f5056 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: SJ5PEPF000001CD.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB6166 Add support to invalidate TLB/IOTLB for the given device. These functions will be used in subsequent patches where we will introduce per device GCR3 table and SVA support. Signed-off-by: Vasant Hegde --- drivers/iommu/amd/amd_iommu.h | 5 +++++ drivers/iommu/amd/iommu.c | 23 +++++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h index 31275bc6e9e4..5e4614dbd435 100644 --- a/drivers/iommu/amd/amd_iommu.h +++ b/drivers/iommu/amd/amd_iommu.h @@ -63,6 +63,11 @@ void amd_iommu_domain_update(struct protection_domain *domain); void amd_iommu_domain_flush_complete(struct protection_domain *domain); void amd_iommu_domain_flush_pages(struct protection_domain *domain, u64 address, size_t size); +void amd_iommu_dev_flush_pasid_pages(struct iommu_dev_data *dev_data, + ioasid_t pasid, u64 address, size_t size); +void amd_iommu_dev_flush_pasid_all(struct iommu_dev_data *dev_data, + ioasid_t pasid); + int amd_iommu_flush_tlb(struct iommu_domain *dom, u32 pasid); int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, u32 pasid, unsigned long cr3); diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index dac04585c7fc..7fef4d7ed4ee 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -1542,6 +1542,29 @@ static void amd_iommu_domain_flush_all(struct protection_domain *domain) CMD_INV_IOMMU_ALL_PAGES_ADDRESS); } +void amd_iommu_dev_flush_pasid_pages(struct iommu_dev_data *dev_data, + ioasid_t pasid, u64 address, size_t size) +{ + struct iommu_cmd cmd; + struct amd_iommu *iommu = get_amd_iommu_from_dev(dev_data->dev); + + build_inv_iommu_pages(&cmd, address, size, + dev_data->domain->id, pasid, true); + iommu_queue_command(iommu, &cmd); + + if (dev_data->ats_enabled) + device_flush_iotlb(dev_data, address, size, pasid, true); + + iommu_completion_wait(iommu); +} + +void amd_iommu_dev_flush_pasid_all(struct iommu_dev_data *dev_data, + ioasid_t pasid) +{ + amd_iommu_dev_flush_pasid_pages(dev_data, 0, + CMD_INV_IOMMU_ALL_PAGES_ADDRESS, pasid); +} + void amd_iommu_domain_flush_complete(struct protection_domain *domain) { int i; -- 2.31.1