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iommufd/selftest: Add vIOMMU coverage for IOMMU_HWPT_INVALIDATE ioctl
Add a viommu_cache test function to cover vIOMMU invalidations using the updated IOMMU_HWPT_INVALIDATE ioctl, which now allows passing in a vIOMMU via its hwpt_id field. Link: https://patch.msgid.link/r/f317f902041f3d05deaee4ca3fdd8ef4b8297361.1730836308.git.nicolinc@nvidia.com Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Nicolin Chen
Jason Gunthorpe
parent
576ad6eb45
commit
49ad127719
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@ -2642,4 +2642,177 @@ TEST_F(iommufd_viommu, vdevice_alloc)
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}
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}
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TEST_F(iommufd_viommu, vdevice_cache)
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{
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struct iommu_viommu_invalidate_selftest inv_reqs[2] = {};
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uint32_t viommu_id = self->viommu_id;
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uint32_t dev_id = self->device_id;
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uint32_t vdev_id = 0;
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uint32_t num_inv;
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if (dev_id) {
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test_cmd_vdevice_alloc(viommu_id, dev_id, 0x99, &vdev_id);
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test_cmd_dev_check_cache_all(dev_id,
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IOMMU_TEST_DEV_CACHE_DEFAULT);
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/* Check data_type by passing zero-length array */
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num_inv = 0;
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test_cmd_viommu_invalidate(viommu_id, inv_reqs,
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sizeof(*inv_reqs), &num_inv);
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assert(!num_inv);
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/* Negative test: Invalid data_type */
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num_inv = 1;
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test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST_INVALID,
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sizeof(*inv_reqs), &num_inv);
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assert(!num_inv);
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/* Negative test: structure size sanity */
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num_inv = 1;
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test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
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sizeof(*inv_reqs) + 1, &num_inv);
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assert(!num_inv);
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num_inv = 1;
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test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
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1, &num_inv);
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assert(!num_inv);
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/* Negative test: invalid flag is passed */
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num_inv = 1;
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inv_reqs[0].flags = 0xffffffff;
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inv_reqs[0].vdev_id = 0x99;
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test_err_viommu_invalidate(EOPNOTSUPP, viommu_id, inv_reqs,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
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sizeof(*inv_reqs), &num_inv);
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assert(!num_inv);
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/* Negative test: invalid data_uptr when array is not empty */
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num_inv = 1;
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inv_reqs[0].flags = 0;
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inv_reqs[0].vdev_id = 0x99;
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test_err_viommu_invalidate(EINVAL, viommu_id, NULL,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
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sizeof(*inv_reqs), &num_inv);
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assert(!num_inv);
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/* Negative test: invalid entry_len when array is not empty */
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num_inv = 1;
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inv_reqs[0].flags = 0;
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inv_reqs[0].vdev_id = 0x99;
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test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
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0, &num_inv);
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assert(!num_inv);
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/* Negative test: invalid cache_id */
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num_inv = 1;
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inv_reqs[0].flags = 0;
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inv_reqs[0].vdev_id = 0x99;
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inv_reqs[0].cache_id = MOCK_DEV_CACHE_ID_MAX + 1;
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test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
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sizeof(*inv_reqs), &num_inv);
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assert(!num_inv);
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/* Negative test: invalid vdev_id */
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num_inv = 1;
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inv_reqs[0].flags = 0;
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inv_reqs[0].vdev_id = 0x9;
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inv_reqs[0].cache_id = 0;
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test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
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sizeof(*inv_reqs), &num_inv);
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assert(!num_inv);
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/*
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* Invalidate the 1st cache entry but fail the 2nd request
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* due to invalid flags configuration in the 2nd request.
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*/
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num_inv = 2;
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inv_reqs[0].flags = 0;
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inv_reqs[0].vdev_id = 0x99;
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inv_reqs[0].cache_id = 0;
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inv_reqs[1].flags = 0xffffffff;
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inv_reqs[1].vdev_id = 0x99;
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inv_reqs[1].cache_id = 1;
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test_err_viommu_invalidate(EOPNOTSUPP, viommu_id, inv_reqs,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
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sizeof(*inv_reqs), &num_inv);
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assert(num_inv == 1);
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test_cmd_dev_check_cache(dev_id, 0, 0);
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test_cmd_dev_check_cache(dev_id, 1,
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IOMMU_TEST_DEV_CACHE_DEFAULT);
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test_cmd_dev_check_cache(dev_id, 2,
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IOMMU_TEST_DEV_CACHE_DEFAULT);
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test_cmd_dev_check_cache(dev_id, 3,
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IOMMU_TEST_DEV_CACHE_DEFAULT);
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/*
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* Invalidate the 1st cache entry but fail the 2nd request
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* due to invalid cache_id configuration in the 2nd request.
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*/
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num_inv = 2;
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inv_reqs[0].flags = 0;
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inv_reqs[0].vdev_id = 0x99;
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inv_reqs[0].cache_id = 0;
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inv_reqs[1].flags = 0;
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inv_reqs[1].vdev_id = 0x99;
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inv_reqs[1].cache_id = MOCK_DEV_CACHE_ID_MAX + 1;
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test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
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sizeof(*inv_reqs), &num_inv);
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assert(num_inv == 1);
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test_cmd_dev_check_cache(dev_id, 0, 0);
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test_cmd_dev_check_cache(dev_id, 1,
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IOMMU_TEST_DEV_CACHE_DEFAULT);
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test_cmd_dev_check_cache(dev_id, 2,
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IOMMU_TEST_DEV_CACHE_DEFAULT);
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test_cmd_dev_check_cache(dev_id, 3,
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IOMMU_TEST_DEV_CACHE_DEFAULT);
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/* Invalidate the 2nd cache entry and verify */
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num_inv = 1;
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inv_reqs[0].flags = 0;
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inv_reqs[0].vdev_id = 0x99;
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inv_reqs[0].cache_id = 1;
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test_cmd_viommu_invalidate(viommu_id, inv_reqs,
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sizeof(*inv_reqs), &num_inv);
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assert(num_inv == 1);
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test_cmd_dev_check_cache(dev_id, 0, 0);
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test_cmd_dev_check_cache(dev_id, 1, 0);
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test_cmd_dev_check_cache(dev_id, 2,
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IOMMU_TEST_DEV_CACHE_DEFAULT);
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test_cmd_dev_check_cache(dev_id, 3,
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IOMMU_TEST_DEV_CACHE_DEFAULT);
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/* Invalidate the 3rd and 4th cache entries and verify */
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num_inv = 2;
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inv_reqs[0].flags = 0;
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inv_reqs[0].vdev_id = 0x99;
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inv_reqs[0].cache_id = 2;
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inv_reqs[1].flags = 0;
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inv_reqs[1].vdev_id = 0x99;
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inv_reqs[1].cache_id = 3;
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test_cmd_viommu_invalidate(viommu_id, inv_reqs,
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sizeof(*inv_reqs), &num_inv);
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assert(num_inv == 2);
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test_cmd_dev_check_cache_all(dev_id, 0);
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/* Invalidate all cache entries for nested_dev_id[1] and verify */
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num_inv = 1;
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inv_reqs[0].vdev_id = 0x99;
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inv_reqs[0].flags = IOMMU_TEST_INVALIDATE_FLAG_ALL;
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test_cmd_viommu_invalidate(viommu_id, inv_reqs,
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sizeof(*inv_reqs), &num_inv);
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assert(num_inv == 1);
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test_cmd_dev_check_cache_all(dev_id, 0);
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test_ioctl_destroy(vdev_id);
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}
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}
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TEST_HARNESS_MAIN
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@ -305,6 +305,38 @@ static int _test_cmd_hwpt_invalidate(int fd, __u32 hwpt_id, void *reqs,
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data_type, lreq, nreqs)); \
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})
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static int _test_cmd_viommu_invalidate(int fd, __u32 viommu_id, void *reqs,
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uint32_t data_type, uint32_t lreq,
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uint32_t *nreqs)
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{
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struct iommu_hwpt_invalidate cmd = {
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.size = sizeof(cmd),
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.hwpt_id = viommu_id,
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.data_type = data_type,
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.data_uptr = (uint64_t)reqs,
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.entry_len = lreq,
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.entry_num = *nreqs,
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};
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int rc = ioctl(fd, IOMMU_HWPT_INVALIDATE, &cmd);
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*nreqs = cmd.entry_num;
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return rc;
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}
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#define test_cmd_viommu_invalidate(viommu, reqs, lreq, nreqs) \
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({ \
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ASSERT_EQ(0, \
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_test_cmd_viommu_invalidate(self->fd, viommu, reqs, \
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IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, \
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lreq, nreqs)); \
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})
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#define test_err_viommu_invalidate(_errno, viommu_id, reqs, data_type, lreq, \
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nreqs) \
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({ \
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EXPECT_ERRNO(_errno, _test_cmd_viommu_invalidate( \
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self->fd, viommu_id, reqs, \
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data_type, lreq, nreqs)); \
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})
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static int _test_cmd_access_replace_ioas(int fd, __u32 access_id,
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unsigned int ioas_id)
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{
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