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Tue, 27 Aug 2024 10:02:31 -0700 From: Nicolin Chen To: , , CC: , , , , , , , , , , , , , , , , Subject: [PATCH v1 07/10] iommufd/selftest: Implement mock_viommu_set/unset_vdev_id Date: Tue, 27 Aug 2024 10:02:09 -0700 Message-ID: <383bb9fabff0051bee9c0fbb5d32163f1e0cf87d.1724777091.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF00000142:EE_|LV3PR12MB9404:EE_ X-MS-Office365-Filtering-Correlation-Id: 8effce88-3043-48a3-1ed0-08dcc6ba1425 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700013|376014|7416014; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(82310400026)(1800799024)(36860700013)(376014)(7416014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Aug 2024 17:02:48.2242 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8effce88-3043-48a3-1ed0-08dcc6ba1425 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF00000142.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9404 So that the driver can take the control of vdev_id's lifecycle. This will be used by the VIRQ feature in the following patches. Signed-off-by: Nicolin Chen --- drivers/iommu/iommufd/selftest.c | 36 ++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index f512874105ac..ea2861d34b4a 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -137,6 +137,8 @@ enum selftest_obj_type { struct mock_dev { struct device dev; + struct mutex lock; + struct iommufd_vdev_id *vdev_id; unsigned long flags; int id; u32 cache[MOCK_DEV_CACHE_NUM]; @@ -541,6 +543,36 @@ static int mock_dev_disable_feat(struct device *dev, enum iommu_dev_features fea return 0; } +static struct iommufd_vdev_id * +mock_viommu_set_vdev_id(struct iommufd_viommu *viommu, struct device *dev, + u64 id) +{ + struct mock_dev *mdev = container_of(dev, struct mock_dev, dev); + struct iommufd_vdev_id *vdev_id; + + vdev_id = kzalloc(sizeof(*vdev_id), GFP_KERNEL); + if (!vdev_id) + return ERR_PTR(-ENOMEM); + + mutex_lock(&mdev->lock); + mdev->vdev_id = vdev_id; + mutex_unlock(&mdev->lock); + + return vdev_id; +} + +static void mock_viommu_unset_vdev_id(struct iommufd_vdev_id *vdev_id) +{ + struct device *dev = iommufd_vdev_id_to_dev(vdev_id); + struct mock_dev *mdev = container_of(dev, struct mock_dev, dev); + + mutex_lock(&mdev->lock); + mdev->vdev_id = NULL; + mutex_unlock(&mdev->lock); + + /* IOMMUFD core frees the memory of vdev_id */ +} + static int mock_viommu_cache_invalidate(struct iommufd_viommu *viommu, struct iommu_user_data_array *array) { @@ -636,6 +668,8 @@ static const struct iommu_ops mock_ops = { .unmap_pages = mock_domain_unmap_pages, .iova_to_phys = mock_domain_iova_to_phys, .default_viommu_ops = &(struct iommufd_viommu_ops){ + .set_vdev_id = mock_viommu_set_vdev_id, + .unset_vdev_id = mock_viommu_unset_vdev_id, .cache_invalidate = mock_viommu_cache_invalidate, }, }, @@ -757,6 +791,7 @@ static void mock_dev_release(struct device *dev) struct mock_dev *mdev = container_of(dev, struct mock_dev, dev); ida_free(&mock_dev_ida, mdev->id); + mutex_destroy(&mdev->lock); kfree(mdev); } @@ -773,6 +808,7 @@ static struct mock_dev *mock_dev_create(unsigned long dev_flags) if (!mdev) return ERR_PTR(-ENOMEM); + mutex_init(&mdev->lock); device_initialize(&mdev->dev); mdev->flags = dev_flags; mdev->dev.release = mock_dev_release;