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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 MN1PEPF0000F0DE.mail.protection.outlook.com (10.167.242.36) 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 10:45:53 +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 05:45:50 -0500 From: Vasant Hegde To: , CC: , , , , Vasant Hegde Subject: [PATCH v3 04/12] iommu/amd: Add support for enabling/disabling IOMMU features Date: Mon, 16 Oct 2023 10:43:43 +0000 Message-ID: <20231016104351.5749-5-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: MN1PEPF0000F0DE:EE_|MN2PR12MB4584:EE_ X-MS-Office365-Filtering-Correlation-Id: 13e08bfe-4464-4b73-287d-08dbce3511d7 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 10:45:53.0490 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 13e08bfe-4464-4b73-287d-08dbce3511d7 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: MN1PEPF0000F0DE.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4584 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 --- 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 39acf98e45dd..22e0703cb500 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2774,6 +2774,32 @@ static bool amd_iommu_enforce_cache_coherency(struct iommu_domain *domain) return true; } +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, @@ -2785,6 +2811,8 @@ 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