Test the basic flow.
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
Tested-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
---
drivers/iommu/iommufd/io_pagetable.c | 3 +++
tools/testing/selftests/iommu/iommufd.c | 15 +++++++++++++
.../selftests/iommu/iommufd_fail_nth.c | 11 +++++++++-
tools/testing/selftests/iommu/iommufd_utils.h | 21 +++++++++++++++++++
4 files changed, 49 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/iommufd/io_pagetable.c b/drivers/iommu/iommufd/io_pagetable.c
index 112bea5a84e43a..4d095115c2d0b8 100644
--- a/drivers/iommu/iommufd/io_pagetable.c
+++ b/drivers/iommu/iommufd/io_pagetable.c
@@ -1180,6 +1180,9 @@ int iopt_table_enforce_dev_resv_regions(struct io_pagetable *iopt,
unsigned int num_sw_msi = 0;
int rc;
+ if (iommufd_should_fail())
+ return -EINVAL;
+
down_write(&iopt->iova_rwsem);
/* FIXME: drivers allocate memory but there is no failure propogated */
iommu_get_resv_regions(dev, &resv_regions);
diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c
index 78841aba47d038..dc09c1de319f05 100644
--- a/tools/testing/selftests/iommu/iommufd.c
+++ b/tools/testing/selftests/iommu/iommufd.c
@@ -1338,6 +1338,21 @@ TEST_F(iommufd_mock_domain, replace)
test_ioctl_destroy(ioas_id);
}
+TEST_F(iommufd_mock_domain, alloc_hwpt)
+{
+ int i;
+
+ for (i = 0; i != variant->mock_domains; i++) {
+ uint32_t stddev_id;
+ uint32_t hwpt_id;
+
+ test_cmd_hwpt_alloc(self->idev_ids[0], self->ioas_id, &hwpt_id);
+ test_cmd_mock_domain(hwpt_id, &stddev_id, NULL, NULL);
+ test_ioctl_destroy(stddev_id);
+ test_ioctl_destroy(hwpt_id);
+ }
+}
+
/* VFIO compatibility IOCTLs */
TEST_F(iommufd, simple_ioctls)
diff --git a/tools/testing/selftests/iommu/iommufd_fail_nth.c b/tools/testing/selftests/iommu/iommufd_fail_nth.c
index 8ab20df4edc8c7..d4c552e5694812 100644
--- a/tools/testing/selftests/iommu/iommufd_fail_nth.c
+++ b/tools/testing/selftests/iommu/iommufd_fail_nth.c
@@ -579,6 +579,8 @@ TEST_FAIL_NTH(basic_fail_nth, device)
uint32_t ioas_id;
uint32_t ioas_id2;
uint32_t stdev_id;
+ uint32_t idev_id;
+ uint32_t hwpt_id;
__u64 iova;
self->fd = open("/dev/iommu", O_RDWR);
@@ -605,11 +607,18 @@ TEST_FAIL_NTH(basic_fail_nth, device)
fail_nth_enable();
- if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, NULL, NULL))
+ if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, NULL,
+ &idev_id))
+ return -1;
+
+ if (_test_cmd_hwpt_alloc(self->fd, idev_id, ioas_id, &hwpt_id))
return -1;
if (_test_cmd_mock_domain_replace(self->fd, stdev_id, ioas_id2, NULL))
return -1;
+
+ if (_test_cmd_mock_domain_replace(self->fd, stdev_id, hwpt_id, NULL))
+ return -1;
return 0;
}
diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h
index 62e01412a7679e..53b4d3f2d9fc6c 100644
--- a/tools/testing/selftests/iommu/iommufd_utils.h
+++ b/tools/testing/selftests/iommu/iommufd_utils.h
@@ -98,6 +98,27 @@ static int _test_cmd_mock_domain_replace(int fd, __u32 stdev_id, __u32 pt_id,
EXPECT_ERRNO(_errno, _test_cmd_mock_domain_replace(self->fd, stdev_id, \
pt_id, NULL))
+static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id,
+ __u32 *hwpt_id)
+{
+ struct iommu_hwpt_alloc cmd = {
+ .size = sizeof(cmd),
+ .dev_id = device_id,
+ .pt_id = pt_id,
+ };
+ int ret;
+
+ ret = ioctl(fd, IOMMU_HWPT_ALLOC, &cmd);
+ if (ret)
+ return ret;
+ if (hwpt_id)
+ *hwpt_id = cmd.out_hwpt_id;
+ return 0;
+}
+
+#define test_cmd_hwpt_alloc(device_id, pt_id, hwpt_id) \
+ ASSERT_EQ(0, _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, hwpt_id))
+
static int _test_cmd_create_access(int fd, unsigned int ioas_id,
__u32 *access_id, unsigned int flags)
{
--
2.41.0
