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@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))