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 <nicolinc@xxxxxxxxxx>
---
tools/testing/selftests/iommu/iommufd_utils.h | 63 +++++++++++++++++++
tools/testing/selftests/iommu/iommufd.c | 22 +++++++
.../selftests/iommu/iommufd_fail_nth.c | 6 ++
3 files changed, 91 insertions(+)
diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h
index d979f5b0efe8..7e3e07c943cc 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"
@@ -936,3 +937,65 @@ static int _test_cmd_vdevice_alloc(int fd, __u32 viommu_id, __u32 idev_id,
EXPECT_ERRNO(_errno, \
_test_cmd_vdevice_alloc(self->fd, viommu_id, idev_id, \
virt_id, vdev_id))
+
+static int _test_cmd_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_cmd_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_cmd_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 virt_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.virt_id == virt_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))
diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c
index 212e5d62e13d..b15ebc963e56 100644
--- a/tools/testing/selftests/iommu/iommufd.c
+++ b/tools/testing/selftests/iommu/iommufd.c
@@ -2774,15 +2774,37 @@ TEST_F(iommufd_viommu, vdevice_alloc)
uint32_t viommu_id = self->viommu_id;
uint32_t dev_id = self->device_id;
uint32_t vdev_id = 0;
+ uint32_t virq_id;
+ uint32_t virq_fd;
if (dev_id) {
+ /* Must allocate vdevice before attaching to a nested hwpt */
+ test_err_mock_domain_replace(ENOENT, self->stdev_id,
+ self->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,
+ NULL, NULL);
/* Set vdev_id to 0x99, unset it, and set to 0x88 */
test_cmd_vdevice_alloc(viommu_id, dev_id, 0x99, &vdev_id);
+ test_cmd_mock_domain_replace(self->stdev_id,
+ self->nested_hwpt_id);
+ test_cmd_trigger_virq(dev_id, virq_fd, 0x99);
test_err_vdevice_alloc(EEXIST, viommu_id, dev_id, 0x99,
&vdev_id);
+ test_cmd_mock_domain_replace(self->stdev_id, self->ioas_id);
test_ioctl_destroy(vdev_id);
+
+ /* Try again with 0x88 */
test_cmd_vdevice_alloc(viommu_id, dev_id, 0x88, &vdev_id);
+ test_cmd_mock_domain_replace(self->stdev_id,
+ self->nested_hwpt_id);
+ test_cmd_trigger_virq(dev_id, virq_fd, 0x88);
+ close(virq_fd);
+ test_cmd_mock_domain_replace(self->stdev_id, self->ioas_id);
test_ioctl_destroy(vdev_id);
+ test_ioctl_destroy(virq_id);
} else {
test_err_vdevice_alloc(ENOENT, viommu_id, dev_id, 0x99, NULL);
}
diff --git a/tools/testing/selftests/iommu/iommufd_fail_nth.c b/tools/testing/selftests/iommu/iommufd_fail_nth.c
index 64b1f8e1b0cf..442442de3a75 100644
--- a/tools/testing/selftests/iommu/iommufd_fail_nth.c
+++ b/tools/testing/selftests/iommu/iommufd_fail_nth.c
@@ -620,6 +620,7 @@ TEST_FAIL_NTH(basic_fail_nth, device)
};
struct iommu_test_hw_info info;
uint32_t fault_id, fault_fd;
+ uint32_t virq_id, virq_fd;
uint32_t fault_hwpt_id;
uint32_t ioas_id;
uint32_t ioas_id2;
@@ -692,6 +693,11 @@ TEST_FAIL_NTH(basic_fail_nth, device)
IOMMU_HWPT_DATA_SELFTEST, &data, sizeof(data)))
return -1;
+ if (_test_cmd_virq_alloc(self->fd, viommu_id, IOMMU_VIRQ_TYPE_SELFTEST,
+ &virq_id, &virq_fd))
+ return -1;
+ close(virq_fd);
+
return 0;
}
--
2.43.0
