From: Nicolin Chen nicolinc@nvidia.com
This allows to test whether IOTLB has been invalidated or not.
Signed-off-by: Nicolin Chen nicolinc@nvidia.com Signed-off-by: Yi Liu yi.l.liu@intel.com --- drivers/iommu/iommufd/iommufd_test.h | 4 ++++ drivers/iommu/iommufd/selftest.c | 22 +++++++++++++++++++ tools/testing/selftests/iommu/iommufd.c | 4 ++++ tools/testing/selftests/iommu/iommufd_utils.h | 14 ++++++++++++ 4 files changed, 44 insertions(+)
diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index e77d57dd8e25..ec904931df69 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -19,6 +19,7 @@ enum { IOMMU_TEST_OP_SET_TEMP_MEMORY_LIMIT, IOMMU_TEST_OP_MOCK_DOMAIN_REPLACE, IOMMU_TEST_OP_ACCESS_REPLACE_IOAS, + IOMMU_TEST_OP_MD_CHECK_IOTLB, };
enum { @@ -95,6 +96,9 @@ struct iommu_test_cmd { struct { __u32 ioas_id; } access_replace_ioas; + struct { + __u32 iotlb; + } check_iotlb; }; __u32 last; }; diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 616525c5d308..57530e7d9524 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -678,6 +678,25 @@ static int iommufd_test_md_check_refs(struct iommufd_ucmd *ucmd, return 0; }
+static int iommufd_test_md_check_iotlb(struct iommufd_ucmd *ucmd, + u32 mockpt_id, u32 iotlb) +{ + struct iommufd_hw_pagetable *hwpt; + struct mock_iommu_domain *mock; + int rc = 0; + + hwpt = get_md_pagetable(ucmd, mockpt_id, &mock); + if (IS_ERR(hwpt)) + return PTR_ERR(hwpt); + + mock = container_of(hwpt->domain, struct mock_iommu_domain, domain); + + if (iotlb != mock->iotlb) + rc = -EINVAL; + iommufd_put_object(&hwpt->obj); + return rc; +} + struct selftest_access { struct iommufd_access *access; struct file *file; @@ -1091,6 +1110,9 @@ int iommufd_test(struct iommufd_ucmd *ucmd) return iommufd_test_md_check_refs( ucmd, u64_to_user_ptr(cmd->check_refs.uptr), cmd->check_refs.length, cmd->check_refs.refs); + case IOMMU_TEST_OP_MD_CHECK_IOTLB: + return iommufd_test_md_check_iotlb(ucmd, cmd->id, + cmd->check_iotlb.iotlb); case IOMMU_TEST_OP_CREATE_ACCESS: return iommufd_test_create_access(ucmd, cmd->id, cmd->create_access.flags); diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 568f80f596ad..afbe23cecb54 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -310,6 +310,10 @@ TEST_F(iommufd_ioas, nested_hwpt_alloc) &nested_hwpt_id[0]); test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, &nested_hwpt_id[1]); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], + IOMMU_TEST_IOTLB_DEFAULT); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[1], + IOMMU_TEST_IOTLB_DEFAULT);
/* Negative test: a nested hwpt on top of a nested hwpt */ test_err_cmd_hwpt_alloc_nested(EINVAL, self->device_id, diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index e2c26168ec89..7d9efe3f7e0d 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -122,6 +122,20 @@ static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, EXPECT_ERRNO(_errno, _test_cmd_hwpt_alloc(self->fd, device_id, \ pt_id, hwpt_id))
+#define test_cmd_hwpt_check_iotlb(hwpt_id, expected) \ + ({ \ + struct iommu_test_cmd test_cmd = { \ + .size = sizeof(test_cmd), \ + .op = IOMMU_TEST_OP_MD_CHECK_IOTLB, \ + .id = hwpt_id, \ + .check_iotlb = { .iotlb = expected }, \ + }; \ + ASSERT_EQ(0, \ + ioctl(self->fd, \ + _IOMMU_TEST_CMD(IOMMU_TEST_OP_MD_CHECK_IOTLB), \ + &test_cmd)); \ + }) + static int _test_cmd_hwpt_alloc_nested(int fd, __u32 device_id, __u32 parent_id, __u32 *hwpt_id) {