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From: Yi Liu <yi.l.liu@intel.com>
To: joro@8bytes.org, alex.williamson@redhat.com, jgg@nvidia.com,
	kevin.tian@intel.com, robin.murphy@arm.com,
	baolu.lu@linux.intel.com
Cc: cohuck@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com,
	kvm@vger.kernel.org, mjrosato@linux.ibm.com,
	chao.p.peng@linux.intel.com, yi.l.liu@intel.com,
	yi.y.sun@linux.intel.com, peterx@redhat.com, jasowang@redhat.com,
	shameerali.kolothum.thodi@huawei.com, lulu@redhat.com,
	suravee.suthikulpanit@amd.com, iommu@lists.linux.dev,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	zhenzhong.duan@intel.com, joao.m.martins@oracle.com,
	xin.zeng@intel.com, yan.y.zhao@intel.com, j.granados@samsung.com
Subject: [PATCH v7 6/9] iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl
Date: Thu, 21 Dec 2023 07:39:45 -0800	[thread overview]
Message-ID: <20231221153948.119007-7-yi.l.liu@intel.com> (raw)
In-Reply-To: <20231221153948.119007-1-yi.l.liu@intel.com>

From: Nicolin Chen <nicolinc@nvidia.com>

Add test cases for the IOMMU_HWPT_INVALIDATE ioctl and verify it by using
the new IOMMU_TEST_OP_MD_CHECK_IOTLB.

Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Co-developed-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
---
 tools/testing/selftests/iommu/iommufd.c       | 166 ++++++++++++++++++
 tools/testing/selftests/iommu/iommufd_utils.h |  33 ++++
 2 files changed, 199 insertions(+)

diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c
index c8763b880a16..6aba797a3d4b 100644
--- a/tools/testing/selftests/iommu/iommufd.c
+++ b/tools/testing/selftests/iommu/iommufd.c
@@ -116,6 +116,7 @@ TEST_F(iommufd, cmd_length)
 	TEST_LENGTH(iommu_destroy, IOMMU_DESTROY, id);
 	TEST_LENGTH(iommu_hw_info, IOMMU_GET_HW_INFO, __reserved);
 	TEST_LENGTH(iommu_hwpt_alloc, IOMMU_HWPT_ALLOC, __reserved);
+	TEST_LENGTH(iommu_hwpt_invalidate, IOMMU_HWPT_INVALIDATE, __reserved);
 	TEST_LENGTH(iommu_ioas_alloc, IOMMU_IOAS_ALLOC, out_ioas_id);
 	TEST_LENGTH(iommu_ioas_iova_ranges, IOMMU_IOAS_IOVA_RANGES,
 		    out_iova_alignment);
@@ -271,7 +272,9 @@ TEST_F(iommufd_ioas, alloc_hwpt_nested)
 	struct iommu_hwpt_selftest data = {
 		.iotlb = IOMMU_TEST_IOTLB_DEFAULT,
 	};
+	struct iommu_hwpt_invalidate_selftest inv_reqs[2] = {};
 	uint32_t nested_hwpt_id[2] = {};
+	uint32_t num_inv;
 	uint32_t parent_hwpt_id = 0;
 	uint32_t parent_hwpt_id_not_work = 0;
 	uint32_t test_hwpt_id = 0;
@@ -344,6 +347,169 @@ TEST_F(iommufd_ioas, alloc_hwpt_nested)
 		EXPECT_ERRNO(EBUSY,
 			     _test_ioctl_destroy(self->fd, parent_hwpt_id));
 
+		/* hwpt_invalidate only supports a user-managed hwpt (nested) */
+		num_inv = 1;
+		test_err_hwpt_invalidate(ENOENT, parent_hwpt_id, inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(!num_inv);
+
+		/* Check req_type by passing zero-length array */
+		num_inv = 0;
+		test_cmd_hwpt_invalidate(nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(!num_inv);
+
+		/* Negative test: Invalid req_type */
+		num_inv = 1;
+		test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST_INVALID,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(!num_inv);
+
+		/* Negative test: structure size sanity */
+		num_inv = 1;
+		test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs) + 1, &num_inv);
+		assert(!num_inv);
+
+		num_inv = 1;
+		test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 1, &num_inv);
+		assert(!num_inv);
+
+		/* Negative test: invalid flag is passed */
+		num_inv = 1;
+		inv_reqs[0].flags = 0xffffffff;
+		test_err_hwpt_invalidate(EOPNOTSUPP, nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(!num_inv);
+
+		num_inv = 1;
+		inv_reqs[0].flags = IOMMU_TEST_INVALIDATE_FLAG_ALL |
+				    IOMMU_TEST_INVALIDATE_FLAG_TRIGGER_ERROR;
+		test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(!num_inv);
+
+		num_inv = 1;
+		inv_reqs[0].flags = 0;
+		inv_reqs[0].__reserved = 0x1234;
+		test_err_hwpt_invalidate(EOPNOTSUPP, nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(!num_inv);
+
+		/* Negative test: invalid iotlb_id */
+		num_inv = 1;
+		inv_reqs[0].flags = 0;
+		inv_reqs[0].__reserved = 0;
+		inv_reqs[0].iotlb_id = MOCK_NESTED_DOMAIN_IOTLB_ID_MAX + 1;
+		test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(!num_inv);
+
+		/* Negative test: trigger error */
+		num_inv = 1;
+		inv_reqs[0].flags = IOMMU_TEST_INVALIDATE_FLAG_TRIGGER_ERROR;
+		inv_reqs[0].iotlb_id = 0;
+		test_cmd_hwpt_invalidate(nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(num_inv == 1);
+		assert(inv_reqs[0].code == IOMMU_TEST_INVALIDATE_FAKE_ERROR);
+
+		/*
+		 * Invalidate the 1st iotlb entry but fail the 2nd request
+		 *  - mock driver error, the error code field is meaningful,
+		 *    the ioctl returns 0.
+		 */
+		num_inv = 2;
+		inv_reqs[0].flags = 0;
+		inv_reqs[0].iotlb_id = 0;
+		inv_reqs[1].flags = IOMMU_TEST_INVALIDATE_FLAG_TRIGGER_ERROR;
+		inv_reqs[1].iotlb_id = 1;
+		test_cmd_hwpt_invalidate(nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(num_inv == 2);
+		assert(inv_reqs[0].code == IOMMU_TEST_INVALIDATE_SUCC);
+		assert(inv_reqs[1].code == IOMMU_TEST_INVALIDATE_FAKE_ERROR);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 0, 0);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 1,
+					  IOMMU_TEST_IOTLB_DEFAULT);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 2,
+					  IOMMU_TEST_IOTLB_DEFAULT);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 3,
+					  IOMMU_TEST_IOTLB_DEFAULT);
+
+		/*
+		 * Invalidate the 1st iotlb entry but fail the 2nd request
+		 *  - ioctl error, the error code field is meaningless
+		 */
+		num_inv = 2;
+		inv_reqs[0].flags = 0;
+		inv_reqs[0].iotlb_id = 0;
+		inv_reqs[1].flags = 0;
+		inv_reqs[1].iotlb_id = MOCK_NESTED_DOMAIN_IOTLB_ID_MAX + 1;
+		test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(num_inv == 1);
+		assert(inv_reqs[0].code == IOMMU_TEST_INVALIDATE_SUCC);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 0, 0);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 1,
+					  IOMMU_TEST_IOTLB_DEFAULT);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 2,
+					  IOMMU_TEST_IOTLB_DEFAULT);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 3,
+					  IOMMU_TEST_IOTLB_DEFAULT);
+
+		/* Invalidate the 2nd iotlb entry and verify */
+		num_inv = 1;
+		inv_reqs[0].flags = 0;
+		inv_reqs[0].iotlb_id = 1;
+		test_cmd_hwpt_invalidate(nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(inv_reqs[0].code == IOMMU_TEST_INVALIDATE_SUCC);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 0, 0);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 1, 0);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 2,
+					  IOMMU_TEST_IOTLB_DEFAULT);
+		test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 3,
+					  IOMMU_TEST_IOTLB_DEFAULT);
+
+		/* Invalidate the 3rd and 4th iotlb entries and verify */
+		num_inv = 2;
+		inv_reqs[0].flags = 0;
+		inv_reqs[0].iotlb_id = 2;
+		inv_reqs[1].flags = 0;
+		inv_reqs[1].iotlb_id = 3;
+		test_cmd_hwpt_invalidate(nested_hwpt_id[0], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(num_inv == 2);
+		assert(inv_reqs[0].code == IOMMU_TEST_INVALIDATE_SUCC);
+		assert(inv_reqs[1].code == IOMMU_TEST_INVALIDATE_SUCC);
+		test_cmd_hwpt_check_iotlb_all(nested_hwpt_id[0], 0);
+
+		/* Invalidate all iotlb entries for nested_hwpt_id[1] and verify */
+		num_inv = 1;
+		inv_reqs[0].flags = IOMMU_TEST_INVALIDATE_FLAG_ALL;
+		test_cmd_hwpt_invalidate(nested_hwpt_id[1], inv_reqs,
+					 IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+					 sizeof(*inv_reqs), &num_inv);
+		assert(num_inv == 1);
+		assert(inv_reqs[0].code == IOMMU_TEST_INVALIDATE_SUCC);
+		test_cmd_hwpt_check_iotlb_all(nested_hwpt_id[1], 0);
+
 		/* Attach device to nested_hwpt_id[0] that then will be busy */
 		test_cmd_mock_domain_replace(self->stdev_id, nested_hwpt_id[0]);
 		EXPECT_ERRNO(EBUSY,
diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h
index fe0a0f566b67..86f3f66c97f0 100644
--- a/tools/testing/selftests/iommu/iommufd_utils.h
+++ b/tools/testing/selftests/iommu/iommufd_utils.h
@@ -219,6 +219,39 @@ static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id,
 			test_cmd_hwpt_check_iotlb(hwpt_id, i, expected);       \
 	})
 
+static int _test_cmd_hwpt_invalidate(int fd, __u32 hwpt_id, void *reqs,
+				     uint32_t req_type, uint32_t lreq,
+				     uint32_t *nreqs)
+{
+	struct iommu_hwpt_invalidate cmd = {
+		.size = sizeof(cmd),
+		.hwpt_id = hwpt_id,
+		.req_type = req_type,
+		.reqs_uptr = (uint64_t)reqs,
+		.req_len = lreq,
+		.req_num = *nreqs,
+	};
+	int rc = ioctl(fd, IOMMU_HWPT_INVALIDATE, &cmd);
+	*nreqs = cmd.req_num;
+	return rc;
+}
+
+#define test_cmd_hwpt_invalidate(hwpt_id, reqs, req_type, lreq, nreqs)        \
+	({                                                                    \
+		ASSERT_EQ(0,                                                  \
+			  _test_cmd_hwpt_invalidate(self->fd, hwpt_id, reqs,  \
+						    req_type,                 \
+						    lreq, nreqs));            \
+	})
+#define test_err_hwpt_invalidate(_errno, hwpt_id, reqs, req_type, lreq,    \
+				 nreqs)                                    \
+	({                                                                 \
+		EXPECT_ERRNO(_errno,                                       \
+			     _test_cmd_hwpt_invalidate(self->fd, hwpt_id,  \
+						       reqs, req_type,     \
+						       lreq, nreqs));      \
+	})
+
 static int _test_cmd_access_replace_ioas(int fd, __u32 access_id,
 					 unsigned int ioas_id)
 {
-- 
2.34.1


  parent reply	other threads:[~2023-12-21 15:39 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-21 15:39 [PATCH v7 0/9] Add iommufd nesting (part 2/2) Yi Liu
2023-12-21 15:39 ` [PATCH v7 1/9] iommu: Add cache_invalidate_user op Yi Liu
2023-12-22  2:30   ` Tian, Kevin
2023-12-26  2:24     ` Yi Liu
2023-12-21 15:39 ` [PATCH v7 2/9] iommufd: Add IOMMU_HWPT_INVALIDATE Yi Liu
2023-12-22  3:19   ` Tian, Kevin
2023-12-26  4:00     ` Yi Liu
2023-12-21 15:39 ` [PATCH v7 3/9] iommu: Add iommu_copy_struct_from_user_array helper Yi Liu
2023-12-22  3:25   ` Tian, Kevin
2023-12-21 15:39 ` [PATCH v7 4/9] iommufd/selftest: Add mock_domain_cache_invalidate_user support Yi Liu
2023-12-22  3:39   ` Tian, Kevin
2023-12-26  3:35     ` Yi Liu
2023-12-21 15:39 ` [PATCH v7 5/9] iommufd/selftest: Add IOMMU_TEST_OP_MD_CHECK_IOTLB test op Yi Liu
2023-12-22  4:01   ` Tian, Kevin
2023-12-21 15:39 ` Yi Liu [this message]
2023-12-22  4:09   ` [PATCH v7 6/9] iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl Tian, Kevin
2023-12-26  4:01     ` Yi Liu
2023-12-21 15:39 ` [PATCH v7 7/9] iommu/vt-d: Allow qi_submit_sync() to return the QI faults Yi Liu
2023-12-22  4:23   ` Tian, Kevin
2023-12-26  4:03     ` Yi Liu
2023-12-26  4:13       ` Tian, Kevin
2023-12-26  6:15         ` Yi Liu
2023-12-26  8:44           ` Yi Liu
2023-12-26  9:21             ` Tian, Kevin
2023-12-27  9:06             ` Duan, Zhenzhong
2023-12-27  9:33               ` Ethan Zhao
2023-12-27 14:12                 ` Yi Liu
2023-12-28  5:39                   ` Tian, Kevin
2023-12-21 15:39 ` [PATCH v7 8/9] iommu/vt-d: Convert pasid based cache invalidation to return QI fault Yi Liu
2023-12-22  6:04   ` Tian, Kevin
2023-12-26  4:14     ` Yi Liu
2023-12-21 15:39 ` [PATCH v7 9/9] iommu/vt-d: Add iotlb flush for nested domain Yi Liu
2023-12-22  3:56   ` Yang, Weijiang
2023-12-22  6:47     ` Tian, Kevin
2023-12-22  7:01       ` Liu, Yi L
2023-12-22  7:12         ` Tian, Kevin
2023-12-22 11:59           ` Liu, Yi L
2023-12-26  8:46             ` Yi Liu
2023-12-22  7:00     ` Liu, Yi L
2023-12-22  6:57   ` Tian, Kevin
2023-12-26  4:51     ` Yi Liu
2023-12-26  6:11       ` Tian, Kevin
2023-12-26 12:35       ` Yi Liu
2023-12-27  9:27   ` Duan, Zhenzhong
2023-12-27 14:14     ` Yi Liu

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