diff options
| author | Nicolin Chen <nicolinc@nvidia.com> | 2023-08-18 13:10:32 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-08-18 18:52:15 +0300 |
| commit | af4fde93c3196ed2cd4e64109a9307a7bc471c5a (patch) | |
| tree | a516c6354b4e9a6383051732048fd027d4137742 /drivers/iommu/iommufd | |
| parent | 55dd4023cead250c89decf1a7a882c94cbf5765a (diff) | |
| download | linux-af4fde93c3196ed2cd4e64109a9307a7bc471c5a.tar.xz | |
iommufd/selftest: Add coverage for IOMMU_GET_HW_INFO ioctl
Add a mock_domain_hw_info function and an iommu_test_hw_info data
structure. This allows to test the IOMMU_GET_HW_INFO ioctl passing the
test_reg value for the mock_dev.
Link: https://lore.kernel.org/r/20230818101033.4100-5-yi.l.liu@intel.com
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/iommu/iommufd')
| -rw-r--r-- | drivers/iommu/iommufd/iommufd_test.h | 9 | ||||
| -rw-r--r-- | drivers/iommu/iommufd/selftest.c | 16 |
2 files changed, 25 insertions, 0 deletions
diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index 258de2253b61..3f3644375bf1 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -100,4 +100,13 @@ struct iommu_test_cmd { }; #define IOMMU_TEST_CMD _IO(IOMMUFD_TYPE, IOMMUFD_CMD_BASE + 32) +/* Mock structs for IOMMU_DEVICE_GET_HW_INFO ioctl */ +#define IOMMU_HW_INFO_TYPE_SELFTEST 0xfeedbeef +#define IOMMU_HW_INFO_SELFTEST_REGVAL 0xdeadbeef + +struct iommu_test_hw_info { + __u32 flags; + __u32 test_reg; +}; + #endif diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 9223ff3f23f9..90e7c5400282 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -131,6 +131,21 @@ static struct iommu_domain mock_blocking_domain = { .ops = &mock_blocking_ops, }; +static void *mock_domain_hw_info(struct device *dev, u32 *length, u32 *type) +{ + struct iommu_test_hw_info *info; + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return ERR_PTR(-ENOMEM); + + info->test_reg = IOMMU_HW_INFO_SELFTEST_REGVAL; + *length = sizeof(*info); + *type = IOMMU_HW_INFO_TYPE_SELFTEST; + + return info; +} + static struct iommu_domain *mock_domain_alloc(unsigned int iommu_domain_type) { struct mock_iommu_domain *mock; @@ -290,6 +305,7 @@ static struct iommu_device *mock_probe_device(struct device *dev) static const struct iommu_ops mock_ops = { .owner = THIS_MODULE, .pgsize_bitmap = MOCK_IO_PAGE_SIZE, + .hw_info = mock_domain_hw_info, .domain_alloc = mock_domain_alloc, .capable = mock_domain_capable, .set_platform_dma_ops = mock_domain_set_plaform_dma_ops, |