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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 MN1PEPF0000F0E0.mail.protection.outlook.com (10.167.242.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6838.22 via Frontend Transport; Mon, 16 Oct 2023 10:48:49 +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 15.1.2507.27; Mon, 16 Oct 2023 05:48:38 -0500 From: Vasant Hegde To: , CC: , , , , Vasant Hegde Subject: [PATCH v3 09/12] iommu/amd: Add support for page response Date: Mon, 16 Oct 2023 10:43:48 +0000 Message-ID: <20231016104351.5749-10-vasant.hegde@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231016104351.5749-1-vasant.hegde@amd.com> References: <20231016104351.5749-1-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-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MN1PEPF0000F0E0:EE_|SJ2PR12MB8692:EE_ X-MS-Office365-Filtering-Correlation-Id: f7a2f9da-55f1-4eb2-5fdf-08dbce357b39 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: 16 Oct 2023 10:48:49.8690 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f7a2f9da-55f1-4eb2-5fdf-08dbce357b39 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: MN1PEPF0000F0E0.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8692 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 63ddfbde8d82..af2d9023e557 100644 --- a/drivers/iommu/amd/amd_iommu.h +++ b/drivers/iommu/amd/amd_iommu.h @@ -58,6 +58,9 @@ void amd_iommu_gcr3_uninit(struct iommu_dev_data *dev_data); /* 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 7512553f2269..4d0dbb37a548 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2803,6 +2803,7 @@ const struct iommu_ops amd_iommu_ops = { .dev_enable_feat = amd_iommu_dev_enable_feature, .dev_disable_feat = amd_iommu_dev_disable_feature, .remove_dev_pasid = amd_iommu_remove_dev_pasid, + .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 9816d7dbcbf0..2a0414e3d689 100644 --- a/drivers/iommu/amd/ppr.c +++ b/drivers/iommu/amd/ppr.c @@ -152,3 +152,18 @@ 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