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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by MWH0EPF000971E2.mail.protection.outlook.com (10.167.243.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7113.14 via Frontend Transport; Thu, 21 Dec 2023 11:18:29 +0000 Received: from kali.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.34; Thu, 21 Dec 2023 05:18:26 -0600 From: Vasant Hegde To: , CC: , , , , Vasant Hegde Subject: [PATCH v4 07/14] iommu/amd: Add support for page response Date: Thu, 21 Dec 2023 11:15:51 +0000 Message-ID: <20231221111558.64652-8-vasant.hegde@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231221111558.64652-1-vasant.hegde@amd.com> References: <20231221111558.64652-1-vasant.hegde@amd.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MWH0EPF000971E2:EE_|DM4PR12MB5181:EE_ X-MS-Office365-Filtering-Correlation-Id: ce35272f-fa50-4b9a-052e-08dc02168f2a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Dec 2023 11:18:29.2324 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ce35272f-fa50-4b9a-052e-08dc02168f2a 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: MWH0EPF000971E2.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5181 From: Suravee Suthikulpanit This generates AMD IOMMU COMPLETE_PPR_REQUEST for the specified device with the specified PRI Response Code. Signed-off-by: Suravee Suthikulpanit Signed-off-by: Wei Huang Signed-off-by: Vasant Hegde --- drivers/iommu/amd/amd_iommu.h | 3 +++ drivers/iommu/amd/iommu.c | 1 + drivers/iommu/amd/ppr.c | 15 +++++++++++++++ 3 files changed, 19 insertions(+) diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h index cfbb4a332f6e..065f6b8ec183 100644 --- a/drivers/iommu/amd/amd_iommu.h +++ b/drivers/iommu/amd/amd_iommu.h @@ -49,6 +49,9 @@ bool amd_iommu_pasid_supported(void); /* IOPF */ int amd_iommu_iopf_init(struct amd_iommu *iommu); void amd_iommu_iopf_uninit(struct amd_iommu *iommu); +int amd_iommu_page_response(struct device *dev, + struct iopf_fault *evt, + struct iommu_page_response *resp); struct amd_iommu *get_amd_iommu(unsigned int idx); u8 amd_iommu_pc_get_max_banks(unsigned int idx); diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index e4dae14c7d00..2913b7e701cb 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2817,6 +2817,7 @@ const struct iommu_ops amd_iommu_ops = { .def_domain_type = amd_iommu_def_domain_type, .dev_enable_feat = amd_iommu_dev_enable_feature, .dev_disable_feat = amd_iommu_dev_disable_feature, + .page_response = amd_iommu_page_response, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = amd_iommu_attach_device, .map_pages = amd_iommu_map_pages, diff --git a/drivers/iommu/amd/ppr.c b/drivers/iommu/amd/ppr.c index 1eb0b737afb5..b1751eb495fd 100644 --- a/drivers/iommu/amd/ppr.c +++ b/drivers/iommu/amd/ppr.c @@ -148,3 +148,18 @@ void amd_iommu_iopf_uninit(struct amd_iommu *iommu) raw_spin_unlock_irqrestore(&iommu->lock, flags); } + +int amd_iommu_page_response(struct device *dev, + struct iopf_fault *evt, + struct iommu_page_response *resp) +{ + struct pci_dev *pdev; + + if (!dev || !dev_is_pci(dev)) + return -ENODEV; + + pdev = to_pci_dev(dev); + + return amd_iommu_complete_ppr(pdev, resp->pasid, resp->code, + resp->grpid); +} -- 2.31.1