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Wed, 30 Oct 2024 14:35:52 -0700 From: Nicolin Chen To: , , CC: , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v6 09/10] iommufd/selftest: Add vIOMMU coverage for IOMMU_HWPT_INVALIDATE ioctl Date: Wed, 30 Oct 2024 14:35:35 -0700 Message-ID: <45cf527206b368988f23afc045716406578c449a.1730313494.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: BN2PEPF00004FBE:EE_|MW3PR12MB4394:EE_ X-MS-Office365-Filtering-Correlation-Id: 79087448-8a69-4b8b-5812-08dcf92ae1c1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|1800799024|36860700013|7416014|376014|82310400026; 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)(1800799024)(36860700013)(7416014)(376014)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Oct 2024 21:36:14.9223 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 79087448-8a69-4b8b-5812-08dcf92ae1c1 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: BN2PEPF00004FBE.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW3PR12MB4394 Add a viommu_cache test function to cover vIOMMU invalidations using the updated IOMMU_HWPT_INVALIDATE ioctl, which now allows passing in a vIOMMU via its hwpt_id field. Reviewed-by: Kevin Tian Signed-off-by: Nicolin Chen Reviewed-by: Jason Gunthorpe --- tools/testing/selftests/iommu/iommufd_utils.h | 32 ++++ tools/testing/selftests/iommu/iommufd.c | 173 ++++++++++++++++++ 2 files changed, 205 insertions(+) diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 619ffdb1e5e8..c0239f86f2f8 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -305,6 +305,38 @@ static int _test_cmd_hwpt_invalidate(int fd, __u32 hwpt_id, void *reqs, data_type, lreq, nreqs)); \ }) +static int _test_cmd_viommu_invalidate(int fd, __u32 viommu_id, void *reqs, + uint32_t data_type, uint32_t lreq, + uint32_t *nreqs) +{ + struct iommu_hwpt_invalidate cmd = { + .size = sizeof(cmd), + .hwpt_id = viommu_id, + .data_type = data_type, + .data_uptr = (uint64_t)reqs, + .entry_len = lreq, + .entry_num = *nreqs, + }; + int rc = ioctl(fd, IOMMU_HWPT_INVALIDATE, &cmd); + *nreqs = cmd.entry_num; + return rc; +} + +#define test_cmd_viommu_invalidate(viommu, reqs, lreq, nreqs) \ + ({ \ + ASSERT_EQ(0, \ + _test_cmd_viommu_invalidate(self->fd, viommu, reqs, \ + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, \ + lreq, nreqs)); \ + }) +#define test_err_viommu_invalidate(_errno, viommu_id, reqs, data_type, lreq, \ + nreqs) \ + ({ \ + EXPECT_ERRNO(_errno, _test_cmd_viommu_invalidate( \ + self->fd, viommu_id, reqs, \ + data_type, lreq, nreqs)); \ + }) + static int _test_cmd_access_replace_ioas(int fd, __u32 access_id, unsigned int ioas_id) { diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 54f3b81e5479..eeaa403101a4 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -2633,4 +2633,177 @@ TEST_F(iommufd_viommu, vdevice_alloc) } } +TEST_F(iommufd_viommu, vdevice_cache) +{ + struct iommu_viommu_invalidate_selftest inv_reqs[2] = {}; + uint32_t viommu_id = self->viommu_id; + uint32_t dev_id = self->device_id; + uint32_t vdev_id = 0; + uint32_t num_inv; + + if (dev_id) { + test_cmd_vdevice_alloc(viommu_id, dev_id, 0x99, &vdev_id); + + test_cmd_dev_check_cache_all(dev_id, + IOMMU_TEST_DEV_CACHE_DEFAULT); + + /* Check data_type by passing zero-length array */ + num_inv = 0; + test_cmd_viommu_invalidate(viommu_id, inv_reqs, + sizeof(*inv_reqs), &num_inv); + assert(!num_inv); + + /* Negative test: Invalid data_type */ + num_inv = 1; + test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST_INVALID, + sizeof(*inv_reqs), &num_inv); + assert(!num_inv); + + /* Negative test: structure size sanity */ + num_inv = 1; + test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, + sizeof(*inv_reqs) + 1, &num_inv); + assert(!num_inv); + + num_inv = 1; + test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, + 1, &num_inv); + assert(!num_inv); + + /* Negative test: invalid flag is passed */ + num_inv = 1; + inv_reqs[0].flags = 0xffffffff; + inv_reqs[0].vdev_id = 0x99; + test_err_viommu_invalidate(EOPNOTSUPP, viommu_id, inv_reqs, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, + sizeof(*inv_reqs), &num_inv); + assert(!num_inv); + + /* Negative test: invalid data_uptr when array is not empty */ + num_inv = 1; + inv_reqs[0].flags = 0; + inv_reqs[0].vdev_id = 0x99; + test_err_viommu_invalidate(EINVAL, viommu_id, NULL, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, + sizeof(*inv_reqs), &num_inv); + assert(!num_inv); + + /* Negative test: invalid entry_len when array is not empty */ + num_inv = 1; + inv_reqs[0].flags = 0; + inv_reqs[0].vdev_id = 0x99; + test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, + 0, &num_inv); + assert(!num_inv); + + /* Negative test: invalid cache_id */ + num_inv = 1; + inv_reqs[0].flags = 0; + inv_reqs[0].vdev_id = 0x99; + inv_reqs[0].cache_id = MOCK_DEV_CACHE_ID_MAX + 1; + test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, + sizeof(*inv_reqs), &num_inv); + assert(!num_inv); + + /* Negative test: invalid vdev_id */ + num_inv = 1; + inv_reqs[0].flags = 0; + inv_reqs[0].vdev_id = 0x9; + inv_reqs[0].cache_id = 0; + test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, + sizeof(*inv_reqs), &num_inv); + assert(!num_inv); + + /* + * Invalidate the 1st cache entry but fail the 2nd request + * due to invalid flags configuration in the 2nd request. + */ + num_inv = 2; + inv_reqs[0].flags = 0; + inv_reqs[0].vdev_id = 0x99; + inv_reqs[0].cache_id = 0; + inv_reqs[1].flags = 0xffffffff; + inv_reqs[1].vdev_id = 0x99; + inv_reqs[1].cache_id = 1; + test_err_viommu_invalidate(EOPNOTSUPP, viommu_id, inv_reqs, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, + sizeof(*inv_reqs), &num_inv); + assert(num_inv == 1); + test_cmd_dev_check_cache(dev_id, 0, 0); + test_cmd_dev_check_cache(dev_id, 1, + IOMMU_TEST_DEV_CACHE_DEFAULT); + test_cmd_dev_check_cache(dev_id, 2, + IOMMU_TEST_DEV_CACHE_DEFAULT); + test_cmd_dev_check_cache(dev_id, 3, + IOMMU_TEST_DEV_CACHE_DEFAULT); + + /* + * Invalidate the 1st cache entry but fail the 2nd request + * due to invalid cache_id configuration in the 2nd request. + */ + num_inv = 2; + inv_reqs[0].flags = 0; + inv_reqs[0].vdev_id = 0x99; + inv_reqs[0].cache_id = 0; + inv_reqs[1].flags = 0; + inv_reqs[1].vdev_id = 0x99; + inv_reqs[1].cache_id = MOCK_DEV_CACHE_ID_MAX + 1; + test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs, + IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, + sizeof(*inv_reqs), &num_inv); + assert(num_inv == 1); + test_cmd_dev_check_cache(dev_id, 0, 0); + test_cmd_dev_check_cache(dev_id, 1, + IOMMU_TEST_DEV_CACHE_DEFAULT); + test_cmd_dev_check_cache(dev_id, 2, + IOMMU_TEST_DEV_CACHE_DEFAULT); + test_cmd_dev_check_cache(dev_id, 3, + IOMMU_TEST_DEV_CACHE_DEFAULT); + + /* Invalidate the 2nd cache entry and verify */ + num_inv = 1; + inv_reqs[0].flags = 0; + inv_reqs[0].vdev_id = 0x99; + inv_reqs[0].cache_id = 1; + test_cmd_viommu_invalidate(viommu_id, inv_reqs, + sizeof(*inv_reqs), &num_inv); + assert(num_inv == 1); + test_cmd_dev_check_cache(dev_id, 0, 0); + test_cmd_dev_check_cache(dev_id, 1, 0); + test_cmd_dev_check_cache(dev_id, 2, + IOMMU_TEST_DEV_CACHE_DEFAULT); + test_cmd_dev_check_cache(dev_id, 3, + IOMMU_TEST_DEV_CACHE_DEFAULT); + + /* Invalidate the 3rd and 4th cache entries and verify */ + num_inv = 2; + inv_reqs[0].flags = 0; + inv_reqs[0].vdev_id = 0x99; + inv_reqs[0].cache_id = 2; + inv_reqs[1].flags = 0; + inv_reqs[1].vdev_id = 0x99; + inv_reqs[1].cache_id = 3; + test_cmd_viommu_invalidate(viommu_id, inv_reqs, + sizeof(*inv_reqs), &num_inv); + assert(num_inv == 2); + test_cmd_dev_check_cache_all(dev_id, 0); + + /* Invalidate all cache entries for nested_dev_id[1] and verify */ + num_inv = 1; + inv_reqs[0].vdev_id = 0x99; + inv_reqs[0].flags = IOMMU_TEST_INVALIDATE_FLAG_ALL; + test_cmd_viommu_invalidate(viommu_id, inv_reqs, + sizeof(*inv_reqs), &num_inv); + assert(num_inv == 1); + test_cmd_dev_check_cache_all(dev_id, 0); + test_ioctl_destroy(vdev_id); + } +} + TEST_HARNESS_MAIN