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.
Signed-off-by: Nicolin Chen
---
tools/testing/selftests/iommu/iommufd_utils.h | 32
tools/testing/selftests/iommu/iommufd.c | 173 ++
2 files changed, 205 insertions(+)
diff --git a/tools/testing/selftests/iommu/iommufd_utils.h
b/tools/testing/selftests/iommu/iommufd_utils.h
index 3ae6cb5eed7d..aa458c80ad30 100644
--- a/tools/testing/selftests/iommu/iommufd_utils.h
+++ b/tools/testing/selftests/iommu/iommufd_utils.h
@@ -289,6 +289,38 @@ static int _test_cmd_hwpt_invalidate(int fd, __u32
hwpt_id, void *reqs,
data_type, lreq, nreqs)); \
})
+static int _test_cmd_viommu_invalidate(int fd, __u32 viommu_id, void *reqs,
+ uint32_t data_type, uint32_t lreq,
+ uint32_t *nreqs)
+{
+ struct iommu_hwpt_invalidate cmd = {
+ .size = sizeof(cmd),
+ .hwpt_id = viommu_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_viommu_invalidate(viommu, reqs, lreq, nreqs)
\
+ ({ \
+ ASSERT_EQ(0, \
+ _test_cmd_viommu_invalidate(self->fd, viommu, reqs, \
+ IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST, \
+ lreq, nreqs)); \
+ })
+#define test_err_viommu_invalidate(_errno, viommu_id, reqs, data_type, lreq,
\
+nreqs)\
+ ({ \
+ EXPECT_ERRNO(_errno, _test_cmd_viommu_invalidate( \
+self->fd, viommu_id, reqs,\
+data_type, lreq, nreqs)); \
+ })
+
static int _test_cmd_access_replace_ioas(int fd, __u32 access_id,
unsigned int ioas_id)
{
diff --git a/tools/testing/selftests/iommu/iommufd.c
b/tools/testing/selftests/iommu/iommufd.c
index ff0181e5db48..9a7d4b9c44f6 100644
--- a/tools/testing/selftests/iommu/iommufd.c
+++ b/tools/testing/selftests/iommu/iommufd.c
@@ -2498,4 +2498,177 @@ TEST_F(iommufd_viommu, vdevice_alloc)
}
}
+TEST_F(iommufd_viommu, vdevice_cache)
+{
+ struct iommu_viommu_invalidate_selftest inv_reqs[2] = {};
+ uint32_t viommu_id = self->viommu_id;
+ uint32_t dev_id = self->device_id;
+ uint32_t vdev_id = 0;
+ uint32_t num_inv;
+
+ if (dev_id) {
+ test_cmd_vdevice_alloc(viommu_id, dev_id, 0x99, &vdev_id);
+
+ test_cmd_dev_check_cache_all(dev_id,
+IOMMU_TEST_DEV_CACHE_DEFAULT);
+
+ /* Check data_type by passing zero-length array */
+ num_inv = 0;
+ test_cmd_viommu_invalidate(viommu_id, inv_reqs,
+ sizeof(*inv_reqs), &num_inv);
+ assert(!num_inv);
+
+ /* Negative test: Invalid data_type */
+ num_inv = 1;
+ test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
+
IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST_INVALID,
+ sizeof(*inv_reqs), &num_inv);
+ assert(!num_inv);
+
+ /* Negative test: structure size sanity */
+ num_inv = 1;
+ test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
+
IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
+ sizeof(*inv_reqs) + 1, &num_inv);
+ assert(!num_inv);
+
+ num_inv = 1;
+ test_err_viommu_invalidate(EINVAL, viommu_id, inv_reqs,
+
IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
+ 1, &num_inv);
+ assert(!num_inv);
+
+ /* Negative test: invalid flag is passed */
+ num_inv = 1;
+ inv_reqs[0].flags = 0x;
+ inv_reqs[0].vdev_id = 0x99;
+ test_err_viommu_invalidate(EOPNOTSUPP, viommu_id, inv_reqs,
+
IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST,
+ sizeof(*inv_reqs),
