Trigger an IRQ giving an idev ID, to test the loopback whether receiving
or not the vdev_id that was set to the idev by the line above.
Signed-off-by: Nicolin Chen <nicol...@nvidia.com>
---
tools/testing/selftests/iommu/iommufd.c | 11 ++++
tools/testing/selftests/iommu/iommufd_utils.h | 64 +++++++++++++++++++
2 files changed, 75 insertions(+)
diff --git a/tools/testing/selftests/iommu/iommufd.c
b/tools/testing/selftests/iommu/iommufd.c
index 6f1014cc208b..11208f53fdce 100644
--- a/tools/testing/selftests/iommu/iommufd.c
+++ b/tools/testing/selftests/iommu/iommufd.c
@@ -564,6 +564,8 @@ TEST_F(iommufd_ioas, viommu_default)
uint32_t nested_hwpt_id = 0, hwpt_id = 0;
uint32_t dev_id = self->device_id;
uint32_t viommu_id = 0;
+ uint32_t virq_id;
+ uint32_t virq_fd;
if (dev_id) {
/* Negative test -- invalid hwpt */
@@ -595,16 +597,25 @@ TEST_F(iommufd_ioas, viommu_default)
sizeof(data));
test_cmd_mock_domain_replace(self->stdev_id, nested_hwpt_id);
+ test_cmd_virq_alloc(viommu_id, IOMMU_VIRQ_TYPE_SELFTEST,
+ &virq_id, &virq_fd);
+ test_err_virq_alloc(EEXIST, viommu_id, IOMMU_VIRQ_TYPE_SELFTEST,
+ &virq_id, &virq_fd);
+
/* Set vdev_id to 0x99, unset it, and set to 0x88 */
test_cmd_viommu_set_vdev_id(viommu_id, dev_id, 0x99);
+ test_cmd_trigger_virq(dev_id, virq_fd, 0x99);
test_err_viommu_set_vdev_id(EEXIST, 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);
+ test_cmd_trigger_virq(dev_id, virq_fd, 0x88);
+ close(virq_fd);
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(virq_id);
test_ioctl_destroy(viommu_id);
test_ioctl_destroy(hwpt_id);
} else {
diff --git a/tools/testing/selftests/iommu/iommufd_utils.h
b/tools/testing/selftests/iommu/iommufd_utils.h
index 0a81827b903f..9fec38f45e0e 100644
--- a/tools/testing/selftests/iommu/iommufd_utils.h
+++ b/tools/testing/selftests/iommu/iommufd_utils.h
@@ -9,6 +9,7 @@
#include <sys/ioctl.h>
#include <stdint.h>
#include <assert.h>
+#include <poll.h>
#include "../kselftest_harness.h"
#include "../../../../drivers/iommu/iommufd/iommufd_test.h"
@@ -888,3 +889,66 @@ static int _test_cmd_viommu_unset_vdev_id(int fd, __u32
viommu_id,
EXPECT_ERRNO(_errno, \
_test_cmd_viommu_unset_vdev_id(self->fd, viommu_id, \
idev_id, vdev_id))
+
+static int _test_ioctl_virq_alloc(int fd, __u32 viommu_id, __u32 type,
+ __u32 *virq_id, __u32 *virq_fd)
+{
+ struct iommu_virq_alloc cmd = {
+ .size = sizeof(cmd),
+ .type = type,
+ .viommu_id = viommu_id,
+ };
+ int ret;
+
+ ret = ioctl(fd, IOMMU_VIRQ_ALLOC, &cmd);
+ if (ret)
+ return ret;
+ if (virq_id)
+ *virq_id = cmd.out_virq_id;
+ if (virq_fd)
+ *virq_fd = cmd.out_virq_fd;
+ return 0;
+}
+
+#define test_cmd_virq_alloc(viommu_id, type, virq_id, virq_fd) \
+ ASSERT_EQ(0, _test_ioctl_virq_alloc(self->fd, viommu_id, type, \
+ virq_id, virq_fd))
+#define test_err_virq_alloc(_errno, viommu_id, type, virq_id, virq_fd) \
+ EXPECT_ERRNO(_errno, \
+ _test_ioctl_virq_alloc(self->fd, viommu_id, type, \
+ virq_id, virq_fd))
+
+static int _test_cmd_trigger_virq(int fd, __u32 dev_id,
+ __u32 event_fd, __u32 vdev_id)
+{
+ struct iommu_test_cmd trigger_virq_cmd = {
+ .size = sizeof(trigger_virq_cmd),
+ .op = IOMMU_TEST_OP_TRIGGER_VIRQ,
+ .trigger_virq = {
+ .dev_id = dev_id,
+ },
+ };
+ struct pollfd pollfd = { .fd = event_fd, .events = POLLIN };
+ struct iommu_viommu_irq_selftest irq;
+ ssize_t bytes;
+ int ret;
+
+ ret = ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_TRIGGER_VIRQ),
+ &trigger_virq_cmd);
+ if (ret)
+ return ret;
+
+ ret = poll(&pollfd, 1, 1000);
+ if (ret < 0)
+ return ret;
+
+ bytes = read(event_fd, &irq, sizeof(irq));
+ if (bytes <= 0)
+ return -EIO;
+
+ return irq.vdev_id == vdev_id ? 0 : -EINVAL;
+}
+
+#define test_cmd_trigger_virq(dev_id, event_fd, vdev_id) \
+ ASSERT_EQ(0, _test_cmd_trigger_virq(self->fd, dev_id, \
+ event_fd, vdev_id))
--
2.43.0
