[PATCH v9 06/10] iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl
From: Yi Liu
Date: Thu Dec 28 2023 - 10:08:28 EST
From: Nicolin Chen <nicolinc@xxxxxxxxxx>
Add test cases for the IOMMU_HWPT_INVALIDATE ioctl and verify it by using
the new IOMMU_TEST_OP_MD_CHECK_IOTLB.
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
Co-developed-by: Yi Liu <yi.l.liu@xxxxxxxxx>
Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx>
---
tools/testing/selftests/iommu/iommufd.c | 186 ++++++++++++++++++
tools/testing/selftests/iommu/iommufd_utils.h | 33 ++++
2 files changed, 219 insertions(+)
diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c
index c8763b880a16..ff0aa77911f3 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 +347,189 @@ 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 data_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 data_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);
+
+ /* Negative test: non-zero __reserved is passed */
+ 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 data_uptr when array is not empty */
+ num_inv = 1;
+ inv_reqs[0].flags = 0;
+ test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], NULL,
+ IOMMU_HWPT_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;
+ test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs,
+ IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
+ 0, &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].hw_error == IOMMU_TEST_INVALIDATE_FAKE_ERROR);
+
+ /* Negative test: trigger error with ALL flag set */
+ num_inv = 1;
+ inv_reqs[0].flags = IOMMU_TEST_INVALIDATE_FLAG_TRIGGER_ERROR |
+ IOMMU_TEST_INVALIDATE_FLAG_ALL;
+ 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].hw_error == IOMMU_TEST_INVALIDATE_FAKE_ERROR);
+
+ /*
+ * Invalidate the 1st iotlb entry but fail the 2nd request
+ * - mock driver error, the hw_error 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].hw_error);
+ assert(inv_reqs[1].hw_error == 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 hw_error 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].hw_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 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].hw_error);
+ 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].hw_error);
+ assert(!inv_reqs[1].hw_error);
+ 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].hw_error);
+ 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..7f41fb796a8a 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 data_type, uint32_t lreq,
+ uint32_t *nreqs)
+{
+ struct iommu_hwpt_invalidate cmd = {
+ .size = sizeof(cmd),
+ .hwpt_id = hwpt_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_hwpt_invalidate(hwpt_id, reqs, data_type, lreq, nreqs) \
+ ({ \
+ ASSERT_EQ(0, \
+ _test_cmd_hwpt_invalidate(self->fd, hwpt_id, reqs, \
+ data_type, \
+ lreq, nreqs)); \
+ })
+#define test_err_hwpt_invalidate(_errno, hwpt_id, reqs, data_type, lreq, \
+ nreqs) \
+ ({ \
+ EXPECT_ERRNO(_errno, \
+ _test_cmd_hwpt_invalidate(self->fd, hwpt_id, \
+ reqs, data_type, \
+ lreq, nreqs)); \
+ })
+
static int _test_cmd_access_replace_ioas(int fd, __u32 access_id,
unsigned int ioas_id)
{
--
2.34.1