A core-managed VIOMMU maintains an xarray to store a list of virtual ids to mock_devs.
Add test cases to cover the new IOMMU_VIOMMU_SET/UNSET_VDEV_ID ioctls.
Signed-off-by: Nicolin Chen nicolinc@nvidia.com --- tools/testing/selftests/iommu/iommufd.c | 35 +++++++++++++++- tools/testing/selftests/iommu/iommufd_utils.h | 42 +++++++++++++++++++ 2 files changed, 75 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 5c770e94f299..2c11525ae754 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -556,9 +556,15 @@ TEST_F(iommufd_ioas, alloc_hwpt_nested)
TEST_F(iommufd_ioas, viommu_default) { + struct iommu_hwpt_selftest data = { + .iotlb = IOMMU_TEST_IOTLB_DEFAULT, + }; + uint32_t nested_hwpt_id = 0, hwpt_id = 0; uint32_t dev_id = self->device_id; uint32_t viommu_id = 0; - uint32_t hwpt_id = 0; + uint32_t device2; + uint32_t stdev2; + uint32_t hwpt2;
if (dev_id) { /* Negative test -- invalid hwpt */ @@ -575,17 +581,42 @@ TEST_F(iommufd_ioas, viommu_default) test_cmd_hwpt_alloc(dev_id, self->ioas_id, IOMMU_HWPT_ALLOC_NEST_PARENT, &hwpt_id); + test_cmd_mock_domain_replace(self->stdev_id, hwpt_id); + /* Negative test -- unsupported viommu type */ test_err_viommu_alloc(EOPNOTSUPP, dev_id, hwpt_id, 0xdead, &viommu_id); - /* Allocate a default type of viommu */ + + /* Allocate a default type of viommu and a nested hwpt on top */ test_cmd_viommu_alloc(dev_id, hwpt_id, IOMMU_VIOMMU_TYPE_DEFAULT, &viommu_id); + test_cmd_hwpt_alloc_nested(self->device_id, viommu_id, 0, + &nested_hwpt_id, + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + test_cmd_mock_domain_replace(self->stdev_id, nested_hwpt_id); + + /* Set vdev_id to 0x99, unset it, and set to 0x88 */ + test_cmd_viommu_set_vdev_id(viommu_id, dev_id, 0x99); + test_err_viommu_set_vdev_id(EBUSY, viommu_id, dev_id, 0x99); + test_err_viommu_unset_vdev_id(EINVAL, viommu_id, dev_id, 0x88); + test_cmd_viommu_unset_vdev_id(viommu_id, dev_id, 0x99); + test_cmd_viommu_set_vdev_id(viommu_id, dev_id, 0x88); + + /* Negative test -- a device attached to a different HWPT */ + test_cmd_mock_domain(self->ioas_id, &stdev2, &hwpt2, &device2); + test_err_viommu_set_vdev_id(EINVAL, viommu_id, device2, 0xaa); + test_ioctl_destroy(stdev2); + + test_cmd_mock_domain_replace(self->stdev_id, hwpt_id); + test_ioctl_destroy(nested_hwpt_id); + test_cmd_mock_domain_replace(self->stdev_id, self->ioas_id); test_ioctl_destroy(viommu_id); test_ioctl_destroy(hwpt_id); } else { test_err_viommu_alloc(ENOENT, dev_id, hwpt_id, IOMMU_VIOMMU_TYPE_DEFAULT, &viommu_id); + test_err_viommu_set_vdev_id(ENOENT, viommu_id, dev_id, 0x99); } }
diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 810783d31ca5..1b494752a87f 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -799,3 +799,45 @@ static int _test_cmd_viommu_alloc(int fd, __u32 device_id, __u32 hwpt_id, EXPECT_ERRNO(_errno, _test_cmd_viommu_alloc(self->fd, device_id, \ hwpt_id, type, 0, \ viommu_id)) + +static int _test_cmd_viommu_set_vdev_id(int fd, __u32 viommu_id, + __u32 idev_id, __u64 vdev_id) +{ + struct iommu_viommu_set_vdev_id cmd = { + .size = sizeof(cmd), + .dev_id = idev_id, + .viommu_id = viommu_id, + .vdev_id = vdev_id, + }; + + return ioctl(fd, IOMMU_VIOMMU_SET_VDEV_ID, &cmd); +} + +#define test_cmd_viommu_set_vdev_id(viommu_id, idev_id, vdev_id) \ + ASSERT_EQ(0, _test_cmd_viommu_set_vdev_id(self->fd, viommu_id, \ + idev_id, vdev_id)) +#define test_err_viommu_set_vdev_id(_errno, viommu_id, idev_id, vdev_id) \ + EXPECT_ERRNO(_errno, \ + _test_cmd_viommu_set_vdev_id(self->fd, viommu_id, \ + idev_id, vdev_id)) + +static int _test_cmd_viommu_unset_vdev_id(int fd, __u32 viommu_id, + __u32 idev_id, __u64 vdev_id) +{ + struct iommu_viommu_unset_vdev_id cmd = { + .size = sizeof(cmd), + .dev_id = idev_id, + .viommu_id = viommu_id, + .vdev_id = vdev_id, + }; + + return ioctl(fd, IOMMU_VIOMMU_UNSET_VDEV_ID, &cmd); +} + +#define test_cmd_viommu_unset_vdev_id(viommu_id, idev_id, vdev_id) \ + ASSERT_EQ(0, _test_cmd_viommu_unset_vdev_id(self->fd, viommu_id, \ + idev_id, vdev_id)) +#define test_err_viommu_unset_vdev_id(_errno, viommu_id, idev_id, vdev_id) \ + EXPECT_ERRNO(_errno, \ + _test_cmd_viommu_unset_vdev_id(self->fd, viommu_id, \ + idev_id, vdev_id))