From: Nicolin Chen nicolinc@nvidia.com
The IOMMU_HWPT_ALLOC ioctl now supports passing user_data to allocate a user-managed domain for nested HWPTs. Add its coverage for that. Also, update _test_cmd_hwpt_alloc() and add test_cmd/err_hwpt_alloc_nested().
Signed-off-by: Nicolin Chen nicolinc@nvidia.com Signed-off-by: Yi Liu yi.l.liu@intel.com Reviewed-by: Kevin Tian kevin.tian@intel.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com --- tools/testing/selftests/iommu/iommufd.c | 115 ++++++++++++++++++ .../selftests/iommu/iommufd_fail_nth.c | 3 +- tools/testing/selftests/iommu/iommufd_utils.h | 30 +++-- 3 files changed, 140 insertions(+), 8 deletions(-)
diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 76a4351e3434..6ed328c863c4 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -264,6 +264,121 @@ TEST_F(iommufd_ioas, ioas_destroy) } }
+TEST_F(iommufd_ioas, alloc_hwpt_nested) +{ + const uint32_t min_data_len = + offsetofend(struct iommu_hwpt_selftest, iotlb); + struct iommu_hwpt_selftest data = { + .iotlb = IOMMU_TEST_IOTLB_DEFAULT, + }; + uint32_t nested_hwpt_id[2] = {}; + uint32_t parent_hwpt_id = 0; + uint32_t parent_hwpt_id_not_work = 0; + uint32_t test_hwpt_id = 0; + + if (self->device_id) { + /* Negative tests */ + test_err_hwpt_alloc(ENOENT, self->ioas_id, self->device_id, 0, + &test_hwpt_id); + test_err_hwpt_alloc(EINVAL, self->device_id, self->device_id, 0, + &test_hwpt_id); + + test_cmd_hwpt_alloc(self->device_id, self->ioas_id, + IOMMU_HWPT_ALLOC_NEST_PARENT, + &parent_hwpt_id); + + test_cmd_hwpt_alloc(self->device_id, self->ioas_id, 0, + &parent_hwpt_id_not_work); + + /* Negative nested tests */ + test_err_hwpt_alloc_nested(EINVAL, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_NONE, &data, + sizeof(data)); + test_err_hwpt_alloc_nested(EOPNOTSUPP, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST + 1, &data, + sizeof(data)); + test_err_hwpt_alloc_nested(EINVAL, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, + min_data_len - 1); + test_err_hwpt_alloc_nested(EFAULT, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, NULL, + sizeof(data)); + test_err_hwpt_alloc_nested( + EOPNOTSUPP, self->device_id, parent_hwpt_id, + IOMMU_HWPT_ALLOC_NEST_PARENT, &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, sizeof(data)); + test_err_hwpt_alloc_nested(EINVAL, self->device_id, + parent_hwpt_id_not_work, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + + /* Allocate two nested hwpts sharing one common parent hwpt */ + test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, 0, + &nested_hwpt_id[1], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + + /* Negative test: a nested hwpt on top of a nested hwpt */ + test_err_hwpt_alloc_nested(EINVAL, self->device_id, + nested_hwpt_id[0], 0, &test_hwpt_id, + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + /* Negative test: parent hwpt now cannot be freed */ + EXPECT_ERRNO(EBUSY, + _test_ioctl_destroy(self->fd, parent_hwpt_id)); + + /* 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, + _test_ioctl_destroy(self->fd, nested_hwpt_id[0])); + + /* Switch from nested_hwpt_id[0] to nested_hwpt_id[1] */ + test_cmd_mock_domain_replace(self->stdev_id, nested_hwpt_id[1]); + EXPECT_ERRNO(EBUSY, + _test_ioctl_destroy(self->fd, nested_hwpt_id[1])); + test_ioctl_destroy(nested_hwpt_id[0]); + + /* Detach from nested_hwpt_id[1] and destroy it */ + test_cmd_mock_domain_replace(self->stdev_id, parent_hwpt_id); + test_ioctl_destroy(nested_hwpt_id[1]); + + /* Detach from the parent hw_pagetable and destroy it */ + test_cmd_mock_domain_replace(self->stdev_id, self->ioas_id); + test_ioctl_destroy(parent_hwpt_id); + test_ioctl_destroy(parent_hwpt_id_not_work); + } else { + test_err_hwpt_alloc(ENOENT, self->device_id, self->ioas_id, 0, + &parent_hwpt_id); + test_err_hwpt_alloc_nested(ENOENT, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + test_err_hwpt_alloc_nested(ENOENT, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[1], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + test_err_mock_domain_replace(ENOENT, self->stdev_id, + nested_hwpt_id[0]); + test_err_mock_domain_replace(ENOENT, self->stdev_id, + nested_hwpt_id[1]); + } +} + TEST_F(iommufd_ioas, hwpt_attach) { /* Create a device attached directly to a hwpt */ diff --git a/tools/testing/selftests/iommu/iommufd_fail_nth.c b/tools/testing/selftests/iommu/iommufd_fail_nth.c index ff735bdd833e..f590417cd67a 100644 --- a/tools/testing/selftests/iommu/iommufd_fail_nth.c +++ b/tools/testing/selftests/iommu/iommufd_fail_nth.c @@ -615,7 +615,8 @@ TEST_FAIL_NTH(basic_fail_nth, device) if (_test_cmd_get_hw_info(self->fd, idev_id, &info, sizeof(info), NULL)) return -1;
- if (_test_cmd_hwpt_alloc(self->fd, idev_id, ioas_id, 0, &hwpt_id)) + if (_test_cmd_hwpt_alloc(self->fd, idev_id, ioas_id, 0, &hwpt_id, + IOMMU_HWPT_DATA_NONE, 0, 0)) return -1;
if (_test_cmd_mock_domain_replace(self->fd, stdev_id, ioas_id2, NULL)) diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index e263bf80a977..050e9751321c 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -154,13 +154,17 @@ static int _test_cmd_mock_domain_replace(int fd, __u32 stdev_id, __u32 pt_id, pt_id, NULL))
static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, - __u32 flags, __u32 *hwpt_id) + __u32 flags, __u32 *hwpt_id, __u32 data_type, + void *data, size_t data_len) { struct iommu_hwpt_alloc cmd = { .size = sizeof(cmd), .flags = flags, .dev_id = device_id, .pt_id = pt_id, + .data_type = data_type, + .data_len = data_len, + .data_uptr = (uint64_t)data, }; int ret;
@@ -172,12 +176,24 @@ static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, return 0; }
-#define test_cmd_hwpt_alloc(device_id, pt_id, flags, hwpt_id) \ - ASSERT_EQ(0, _test_cmd_hwpt_alloc(self->fd, device_id, \ - pt_id, flags, hwpt_id)) -#define test_err_hwpt_alloc(_errno, device_id, pt_id, flags, hwpt_id) \ - EXPECT_ERRNO(_errno, _test_cmd_hwpt_alloc(self->fd, device_id, \ - pt_id, flags, hwpt_id)) +#define test_cmd_hwpt_alloc(device_id, pt_id, flags, hwpt_id) \ + ASSERT_EQ(0, _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, flags, \ + hwpt_id, IOMMU_HWPT_DATA_NONE, NULL, \ + 0)) +#define test_err_hwpt_alloc(_errno, device_id, pt_id, flags, hwpt_id) \ + EXPECT_ERRNO(_errno, _test_cmd_hwpt_alloc( \ + self->fd, device_id, pt_id, flags, \ + hwpt_id, IOMMU_HWPT_DATA_NONE, NULL, 0)) + +#define test_cmd_hwpt_alloc_nested(device_id, pt_id, flags, hwpt_id, \ + data_type, data, data_len) \ + ASSERT_EQ(0, _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, flags, \ + hwpt_id, data_type, data, data_len)) +#define test_err_hwpt_alloc_nested(_errno, device_id, pt_id, flags, hwpt_id, \ + data_type, data, data_len) \ + EXPECT_ERRNO(_errno, \ + _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, flags, \ + hwpt_id, data_type, data, data_len))
static int _test_cmd_access_replace_ioas(int fd, __u32 access_id, unsigned int ioas_id)