The handler will get vDEVICE object from the given mdev and convert it to its per-vIOMMU virtual ID to mimic a real IOMMU driver.
Signed-off-by: Nicolin Chen nicolinc@nvidia.com --- drivers/iommu/iommufd/iommufd_test.h | 10 ++++++++++ drivers/iommu/iommufd/selftest.c | 30 ++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+)
diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index a6b7a163f636..3037904f2e52 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -24,6 +24,7 @@ enum { IOMMU_TEST_OP_MD_CHECK_IOTLB, IOMMU_TEST_OP_TRIGGER_IOPF, IOMMU_TEST_OP_DEV_CHECK_CACHE, + IOMMU_TEST_OP_TRIGGER_VIRQ, };
enum { @@ -145,6 +146,9 @@ struct iommu_test_cmd { __u32 id; __u32 cache; } check_dev_cache; + struct { + __u32 dev_id; + } trigger_virq; }; __u32 last; }; @@ -212,4 +216,10 @@ struct iommu_viommu_invalidate_selftest { __u32 cache_id; };
+#define IOMMU_VIRQ_TYPE_SELFTEST 0xbeefbeef + +struct iommu_viommu_irq_selftest { + __u32 virt_id; +}; + #endif diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index d1438d81e664..0785c9447102 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -1631,6 +1631,34 @@ static int iommufd_test_trigger_iopf(struct iommufd_ucmd *ucmd, return 0; }
+static int iommufd_test_trigger_virq(struct iommufd_ucmd *ucmd, + struct iommu_test_cmd *cmd) +{ + struct iommu_viommu_irq_selftest test = {}; + struct iommufd_device *idev; + struct mock_dev *mdev; + int rc = -ENOENT; + + idev = iommufd_get_device(ucmd, cmd->trigger_virq.dev_id); + if (IS_ERR(idev)) + return PTR_ERR(idev); + mdev = to_mock_dev(idev->dev); + + down_read(&mdev->viommu_rwsem); + if (!mdev->viommu || !mdev->vdev_id) + goto out_unlock; + + test.virt_id = mdev->vdev_id; + rc = iommufd_viommu_report_irq(&mdev->viommu->core, + IOMMU_VIRQ_TYPE_SELFTEST, &test, + sizeof(test)); +out_unlock: + up_read(&mdev->viommu_rwsem); + iommufd_put_object(ucmd->ictx, &idev->obj); + + return rc; +} + void iommufd_selftest_destroy(struct iommufd_object *obj) { struct selftest_obj *sobj = to_selftest_obj(obj); @@ -1712,6 +1740,8 @@ int iommufd_test(struct iommufd_ucmd *ucmd) cmd->dirty.flags); case IOMMU_TEST_OP_TRIGGER_IOPF: return iommufd_test_trigger_iopf(ucmd, cmd); + case IOMMU_TEST_OP_TRIGGER_VIRQ: + return iommufd_test_trigger_virq(ucmd, cmd); default: return -EOPNOTSUPP; }