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iommufd/selftest: Replace mock_viommu_alloc with mock_viommu_init

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To ease the for-driver iommufd APIs, get_viommu_size and viommu_init ops
are introduced.

Sanitize the inputs and report the size of struct mock_viommu on success,
in mock_get_viommu_size().

The core will ensure the viommu_type is set to the core vIOMMU object, so
simply init the driver part in mock_viommu_init().

Remove the mock_viommu_alloc, completing the replacement.

Link: https://patch.msgid.link/r/993beabbb0bc9705d979a92801ea5ed5996a34eb.1749882255.git.nicolinc@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Nicolin Chen 2025-06-13 23:35:21 -07:00 committed by Jason Gunthorpe
parent 5983d1e7d7
commit 683cff7c3b
1 changed files with 14 additions and 15 deletions
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29
drivers/iommu/iommufd/selftest.c
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@ -769,25 +769,23 @@ static struct iommufd_viommu_ops mock_viommu_ops = {
.cache_invalidate = mock_viommu_cache_invalidate,
};
static struct iommufd_viommu *mock_viommu_alloc(struct device *dev,
struct iommu_domain *domain,
struct iommufd_ctx *ictx,
unsigned int viommu_type)
static size_t mock_get_viommu_size(struct device *dev,
enum iommu_viommu_type viommu_type)
{
struct mock_iommu_device *mock_iommu =
iommu_get_iommu_dev(dev, struct mock_iommu_device, iommu_dev);
struct mock_viommu *mock_viommu;
if (viommu_type != IOMMU_VIOMMU_TYPE_SELFTEST)
return ERR_PTR(-EOPNOTSUPP);
return 0;
return VIOMMU_STRUCT_SIZE(struct mock_viommu, core);
}
mock_viommu = iommufd_viommu_alloc(ictx, struct mock_viommu, core,
&mock_viommu_ops);
if (IS_ERR(mock_viommu))
return ERR_CAST(mock_viommu);
static int mock_viommu_init(struct iommufd_viommu *viommu,
struct iommu_domain *parent_domain)
{
struct mock_iommu_device *mock_iommu = container_of(
viommu->iommu_dev, struct mock_iommu_device, iommu_dev);
refcount_inc(&mock_iommu->users);
return &mock_viommu->core;
viommu->ops = &mock_viommu_ops;
return 0;
}
static const struct iommu_ops mock_ops = {
@ -807,7 +805,8 @@ static const struct iommu_ops mock_ops = {
.probe_device = mock_probe_device,
.page_response = mock_domain_page_response,
.user_pasid_table = true,
.viommu_alloc = mock_viommu_alloc,
.get_viommu_size = mock_get_viommu_size,
.viommu_init = mock_viommu_init,
.default_domain_ops =
&(struct iommu_domain_ops){
.free = mock_domain_free,