From: Nicolin Chen nicolinc@nvidia.com
This only adds limited sanity.
Signed-off-by: Nicolin Chen nicolinc@nvidia.com Signed-off-by: Yi Liu yi.l.liu@intel.com --- drivers/iommu/iommufd/hw_pagetable.c | 7 ++++++- drivers/iommu/iommufd/iommufd_test.h | 10 +++++++++ drivers/iommu/iommufd/selftest.c | 15 +++++++++++++ tools/testing/selftests/iommu/iommufd.c | 8 +++++++ tools/testing/selftests/iommu/iommufd_utils.h | 21 +++++++++++++++++++ 5 files changed, 60 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/iommufd/hw_pagetable.c b/drivers/iommu/iommufd/hw_pagetable.c index 1f1940969b2b..86864a3e170e 100644 --- a/drivers/iommu/iommufd/hw_pagetable.c +++ b/drivers/iommu/iommufd/hw_pagetable.c @@ -283,7 +283,12 @@ int iommufd_hwpt_invalidate(struct iommufd_ucmd *ucmd) goto out_put_hwpt; }
- klen = iommufd_hwpt_invalidate_info_size[cmd->data_type]; + if (cmd->data_type != IOMMU_PGTBL_DATA_SELFTTEST) + klen = iommufd_hwpt_invalidate_info_size[cmd->data_type]; +#ifdef CONFIG_IOMMUFD_TEST + else + klen = sizeof(struct iommu_hwpt_invalidate_selftest); +#endif if (!klen) { rc = -EINVAL; goto out_put_hwpt; diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index 5998c63a89f2..4913884a8b24 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -134,4 +134,14 @@ struct iommu_hwpt_selftest { __u64 test_config; };
+/** + * struct iommu_hwpt_invalidate_selftest + * + * @flags: invalidate flags + */ +struct iommu_hwpt_invalidate_selftest { +#define IOMMU_TEST_INVALIDATE_ALL (1 << 0) + __u64 flags; +}; + #endif diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 21134000bc78..06b5e8829488 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -283,6 +283,20 @@ static phys_addr_t mock_domain_iova_to_phys(struct iommu_domain *domain, return (xa_to_value(ent) & MOCK_PFN_MASK) * MOCK_IO_PAGE_SIZE; }
+static void mock_domain_iotlb_sync_user(struct iommu_domain *domain, + void *user_data) +{ + struct iommu_hwpt_invalidate_selftest *inv_info = user_data; + struct mock_iommu_domain *mock = + container_of(domain, struct mock_iommu_domain, domain); + + if (domain->type != IOMMU_DOMAIN_NESTED || !mock->parent) + return; + + if (inv_info->flags & IOMMU_TEST_INVALIDATE_ALL) + mock->iotlb = 0; +} + static const struct iommu_ops mock_ops = { .owner = THIS_MODULE, .pgsize_bitmap = MOCK_IO_PAGE_SIZE, @@ -301,6 +315,7 @@ static const struct iommu_ops mock_ops = {
static struct iommu_domain_ops domain_nested_ops = { .free = mock_domain_free, + .iotlb_sync_user = mock_domain_iotlb_sync_user, };
static inline struct iommufd_hw_pagetable * diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index ddd7c898fc50..3fc7a1cd8fef 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -126,6 +126,7 @@ TEST_F(iommufd, cmd_length) TEST_LENGTH(iommu_vfio_ioas, IOMMU_VFIO_IOAS); TEST_LENGTH(iommu_device_info, IOMMU_DEVICE_GET_INFO); TEST_LENGTH(iommu_hwpt_alloc, IOMMU_HWPT_ALLOC); + TEST_LENGTH(iommu_hwpt_invalidate, IOMMU_HWPT_INVALIDATE); #undef TEST_LENGTH }
@@ -312,6 +313,13 @@ TEST_F(iommufd_ioas, ioas_nested_hwpt) EXPECT_ERRNO(EBUSY, _test_ioctl_destroy(self->fd, parent_hwpt_id));
+ /* hwpt_invalidate only supports a user-managed hwpt (nested) */ + test_err_ioctl_hwpt_invalidate(EINVAL, parent_hwpt_id); + test_ioctl_hwpt_invalidate(nested_hwpt_id[0]); + test_ioctl_hwpt_check_iotlb(nested_hwpt_id[0], 0); + test_ioctl_hwpt_invalidate(nested_hwpt_id[1]); + test_ioctl_hwpt_check_iotlb(nested_hwpt_id[1], 0); + /* Attach device to nested_hwpt_id[0] that then will be busy */ test_cmd_mock_domain_replace(self->ioas_id, self->dev_id, nested_hwpt_id[0]); diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index ea61b81fbc52..73ba0bacbb9a 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -244,6 +244,27 @@ static int _test_ioctl_hwpt_alloc(int fd, __u32 pt_id, __u32 dev_id, ASSERT_EQ(0, *(out_hwpt_id)); \ })
+static int _test_ioctl_hwpt_invalidate(int fd, __u32 hwpt_id) +{ + struct iommu_hwpt_invalidate_selftest data = { + .flags = IOMMU_TEST_INVALIDATE_ALL, + }; + struct iommu_hwpt_invalidate cmd = { + .size = sizeof(cmd), + .hwpt_id = hwpt_id, + .data_type = IOMMU_PGTBL_DATA_SELFTTEST, + .data_len = sizeof(data), + .data_uptr = (uint64_t)&data, + }; + + return ioctl(fd, IOMMU_HWPT_INVALIDATE, &cmd); +} + +#define test_ioctl_hwpt_invalidate(hwpt_id) \ + ASSERT_EQ(0, _test_ioctl_hwpt_invalidate(self->fd, hwpt_id)) +#define test_err_ioctl_hwpt_invalidate(_errno, hwpt_id) \ + EXPECT_ERRNO(_errno, _test_ioctl_hwpt_invalidate(self->fd, hwpt_id)) + static int _test_ioctl_ioas_map(int fd, unsigned int ioas_id, void *buffer, size_t length, __u64 *iova, unsigned int flags) {