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Thu, 27 Jul 2023 14:10:02 -0700 From: Nicolin Chen To: , CC: , , , , , , , , , , Subject: [PATCH v5 3/4] iommufd/selftest: Add IOMMU_TEST_OP_DEV_CHECK_DATA Date: Thu, 27 Jul 2023 14:09:42 -0700 Message-ID: X-Mailer: git-send-email 2.41.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT049:EE_|BL3PR12MB9049:EE_ X-MS-Office365-Filtering-Correlation-Id: 044d7da4-35ae-446b-4f29-08db8ee5de9c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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:(13230028)(4636009)(136003)(376002)(396003)(346002)(39860400002)(451199021)(82310400008)(36840700001)(40470700004)(46966006)(426003)(316002)(7416002)(40480700001)(40460700003)(356005)(47076005)(86362001)(83380400001)(70206006)(336012)(26005)(41300700001)(186003)(70586007)(8936002)(8676002)(4326008)(2906002)(7696005)(6666004)(82740400003)(5660300002)(2616005)(36756003)(54906003)(110136005)(478600001)(7636003)(36860700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Jul 2023 21:10:13.4935 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 044d7da4-35ae-446b-4f29-08db8ee5de9c 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: DM6NAM11FT049.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL3PR12MB9049 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add mock_domain_set/unset_dev_user_data and iommufd_test_dev_check_data to allow testing on IOMMUFD_CMD_SET/UNSET_DEV_DATA ioctls from the user space selftest via IOMMU_TEST_OP_DEV_CHECK_DATA. Signed-off-by: Nicolin Chen --- drivers/iommu/iommufd/iommufd_test.h | 15 ++++++++++ drivers/iommu/iommufd/selftest.c | 42 ++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+) diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/i= ommufd_test.h index 9768d0c9e347..b191d7417719 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -22,6 +22,7 @@ enum { IOMMU_TEST_OP_DEV_ADD_RESERVED, IOMMU_TEST_OP_DEV_DEL_RESERVED, IOMMU_TEST_OP_MD_CHECK_IOTLB, + IOMMU_TEST_OP_DEV_CHECK_DATA, }; =20 enum { @@ -105,6 +106,9 @@ struct iommu_test_cmd { struct { __u32 iotlb; } check_iotlb; + struct { + __u32 val; + } check_dev_data; }; __u32 last; }; @@ -119,6 +123,17 @@ struct iommu_test_hw_info { __u32 test_reg; }; =20 +#define IOMMU_DEVICE_DATA_SELFTEST 0xdadbeef + +/** + * struct iommu_test_device_data + * + * @val: Should be set to IOMMU_DEVICE_DATA_SELFTEST or unset to 0x0 + */ +struct iommu_test_device_data { + __u32 val; +}; + /* Should not be equal to any defined value in enum iommu_hwpt_type */ #define IOMMU_HWPT_TYPE_SELFTTEST 0xdead =20 diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selft= est.c index 5f3e1f2a24e7..526ec6066d17 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -97,6 +97,7 @@ struct mock_dev { struct device dev; struct rw_semaphore reserved_rwsem; struct rb_root_cached reserved_itree; + u32 dev_data; }; =20 struct selftest_obj { @@ -375,6 +376,23 @@ static void iommufd_test_get_resv_regions(struct devic= e *dev, up_read(&mdev->reserved_rwsem); } =20 +static int mock_domain_set_dev_user_data(struct device *dev, + const void *user_data) +{ + struct mock_dev *mdev =3D container_of(dev, struct mock_dev, dev); + const struct iommu_test_device_data *data =3D user_data; + + mdev->dev_data =3D data->val; + return 0; +} + +static void mock_domain_unset_dev_user_data(struct device *dev) +{ + struct mock_dev *mdev =3D container_of(dev, struct mock_dev, dev); + + mdev->dev_data =3D 0; +} + static const struct iommu_ops mock_ops =3D { .owner =3D THIS_MODULE, .pgsize_bitmap =3D MOCK_IO_PAGE_SIZE, @@ -385,6 +403,9 @@ static const struct iommu_ops mock_ops =3D { .capable =3D mock_domain_capable, .get_resv_regions =3D iommufd_test_get_resv_regions, .set_platform_dma_ops =3D mock_domain_set_plaform_dma_ops, + .set_dev_user_data =3D mock_domain_set_dev_user_data, + .unset_dev_user_data =3D mock_domain_unset_dev_user_data, + .dev_user_data_len =3D sizeof(struct iommu_test_device_data), .default_domain_ops =3D &(struct iommu_domain_ops){ .free =3D mock_domain_free, @@ -833,6 +854,24 @@ static int iommufd_test_md_check_iotlb(struct iommufd_= ucmd *ucmd, return rc; } =20 +static int iommufd_test_dev_check_data(struct iommufd_ucmd *ucmd, + u32 dev_id, u32 val) +{ + struct iommufd_device *idev; + struct mock_dev *mdev; + int rc =3D 0; + + idev =3D iommufd_get_device(ucmd, dev_id); + if (IS_ERR(idev)) + return PTR_ERR(idev); + mdev =3D container_of(idev->dev, struct mock_dev, dev); + + if (mdev->dev_data !=3D val) + rc =3D -EINVAL; + iommufd_put_object(&idev->obj); + return rc; +} + struct selftest_access { struct iommufd_access *access; struct file *file; @@ -1255,6 +1294,9 @@ int iommufd_test(struct iommufd_ucmd *ucmd) case IOMMU_TEST_OP_MD_CHECK_IOTLB: return iommufd_test_md_check_iotlb(ucmd, cmd->id, cmd->check_iotlb.iotlb); + case IOMMU_TEST_OP_DEV_CHECK_DATA: + return iommufd_test_dev_check_data(ucmd, cmd->id, + cmd->check_dev_data.val); case IOMMU_TEST_OP_CREATE_ACCESS: return iommufd_test_create_access(ucmd, cmd->id, cmd->create_access.flags); --=20 2.41.0