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iommufd/selftest: Add IOMMU_TEST_OP_DEV_CHECK_CACHE test command

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Similar to IOMMU_TEST_OP_MD_CHECK_IOTLB verifying a mock_domain's iotlb,
IOMMU_TEST_OP_DEV_CHECK_CACHE will be used to verify a mock_dev's cache.

Link: https://patch.msgid.link/r/cd4082079d75427bd67ed90c3c825e15b5720a5f.1730836308.git.nicolinc@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Nicolin Chen 2024-11-05 12:05:16 -08:00 committed by Jason Gunthorpe
parent d6563aa2a8
commit 576ad6eb45
4 changed files with 57 additions and 1 deletions
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5
drivers/iommu/iommufd/iommufd_test.h
View File

@ -23,6 +23,7 @@ enum {
IOMMU_TEST_OP_DIRTY,
IOMMU_TEST_OP_MD_CHECK_IOTLB,
IOMMU_TEST_OP_TRIGGER_IOPF,
IOMMU_TEST_OP_DEV_CHECK_CACHE,
};
enum {
@ -140,6 +141,10 @@ struct iommu_test_cmd {
__u32 perm;
__u64 addr;
} trigger_iopf;
struct {
__u32 id;
__u32 cache;
} check_dev_cache;
};
__u32 last;
};

22
drivers/iommu/iommufd/selftest.c
View File

@ -1125,6 +1125,24 @@ static int iommufd_test_md_check_iotlb(struct iommufd_ucmd *ucmd,
return rc;
}
static int iommufd_test_dev_check_cache(struct iommufd_ucmd *ucmd, u32 idev_id,
unsigned int cache_id, u32 cache)
{
struct iommufd_device *idev;
struct mock_dev *mdev;
int rc = 0;
idev = iommufd_get_device(ucmd, idev_id);
if (IS_ERR(idev))
return PTR_ERR(idev);
mdev = container_of(idev->dev, struct mock_dev, dev);
if (cache_id > MOCK_DEV_CACHE_ID_MAX || mdev->cache[cache_id] != cache)
rc = -EINVAL;
iommufd_put_object(ucmd->ictx, &idev->obj);
return rc;
}
struct selftest_access {
struct iommufd_access *access;
struct file *file;
@ -1634,6 +1652,10 @@ int iommufd_test(struct iommufd_ucmd *ucmd)
return iommufd_test_md_check_iotlb(ucmd, cmd->id,
cmd->check_iotlb.id,
cmd->check_iotlb.iotlb);
case IOMMU_TEST_OP_DEV_CHECK_CACHE:
return iommufd_test_dev_check_cache(ucmd, cmd->id,
cmd->check_dev_cache.id,
cmd->check_dev_cache.cache);
case IOMMU_TEST_OP_CREATE_ACCESS:
return iommufd_test_create_access(ucmd, cmd->id,
cmd->create_access.flags);

7
tools/testing/selftests/iommu/iommufd.c
View File

@ -227,6 +227,8 @@ FIXTURE_SETUP(iommufd_ioas)
for (i = 0; i != variant->mock_domains; i++) {
test_cmd_mock_domain(self->ioas_id, &self->stdev_id,
&self->hwpt_id, &self->device_id);
test_cmd_dev_check_cache_all(self->device_id,
IOMMU_TEST_DEV_CACHE_DEFAULT);
self->base_iova = MOCK_APERTURE_START;
}
}
@ -1392,9 +1394,12 @@ FIXTURE_SETUP(iommufd_mock_domain)
ASSERT_GE(ARRAY_SIZE(self->hwpt_ids), variant->mock_domains);
for (i = 0; i != variant->mock_domains; i++)
for (i = 0; i != variant->mock_domains; i++) {
test_cmd_mock_domain(self->ioas_id, &self->stdev_ids[i],
&self->hwpt_ids[i], &self->idev_ids[i]);
test_cmd_dev_check_cache_all(self->idev_ids[0],
IOMMU_TEST_DEV_CACHE_DEFAULT);
}
self->hwpt_id = self->hwpt_ids[0];
self->mmap_flags = MAP_SHARED | MAP_ANONYMOUS;

24
tools/testing/selftests/iommu/iommufd_utils.h
View File

@ -250,6 +250,30 @@ static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, __u32 ft_i
test_cmd_hwpt_check_iotlb(hwpt_id, i, expected); \
})
#define test_cmd_dev_check_cache(device_id, cache_id, expected) \
({ \
struct iommu_test_cmd test_cmd = { \
.size = sizeof(test_cmd), \
.op = IOMMU_TEST_OP_DEV_CHECK_CACHE, \
.id = device_id, \
.check_dev_cache = { \
.id = cache_id, \
.cache = expected, \
}, \
}; \
ASSERT_EQ(0, ioctl(self->fd, \
_IOMMU_TEST_CMD( \
IOMMU_TEST_OP_DEV_CHECK_CACHE), \
&test_cmd)); \
})
#define test_cmd_dev_check_cache_all(device_id, expected) \
({ \
int c; \
for (c = 0; c < MOCK_DEV_CACHE_NUM; c++) \
test_cmd_dev_check_cache(device_id, c, expected); \
})
static int _test_cmd_hwpt_invalidate(int fd, __u32 hwpt_id, void *reqs,
uint32_t data_type, uint32_t lreq,
uint32_t *nreqs)