diff options
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index cd91c0eabb34..d82aa6563d84 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1962,20 +1962,42 @@ __iommu_group_domain_alloc(struct iommu_group *group, unsigned int type) } /** - * iommu_paging_domain_alloc() - Allocate a paging domain + * iommu_paging_domain_alloc_flags() - Allocate a paging domain * @dev: device for which the domain is allocated + * @flags: Enum of iommufd_hwpt_alloc_flags * * Allocate a paging domain which will be managed by a kernel driver. Return - * allocated domain if successful, or a ERR pointer for failure. + * allocated domain if successful, or an ERR pointer for failure. */ -struct iommu_domain *iommu_paging_domain_alloc(struct device *dev) +struct iommu_domain *iommu_paging_domain_alloc_flags(struct device *dev, + unsigned int flags) { + const struct iommu_ops *ops; + struct iommu_domain *domain; + if (!dev_has_iommu(dev)) return ERR_PTR(-ENODEV); - return __iommu_domain_alloc(dev_iommu_ops(dev), dev, IOMMU_DOMAIN_UNMANAGED); + ops = dev_iommu_ops(dev); + + if (ops->domain_alloc_paging && !flags) + domain = ops->domain_alloc_paging(dev); + else if (ops->domain_alloc_user) + domain = ops->domain_alloc_user(dev, flags, NULL, NULL); + else if (ops->domain_alloc && !flags) + domain = ops->domain_alloc(IOMMU_DOMAIN_UNMANAGED); + else + return ERR_PTR(-EOPNOTSUPP); + + if (IS_ERR(domain)) + return domain; + if (!domain) + return ERR_PTR(-ENOMEM); + + iommu_domain_init(domain, IOMMU_DOMAIN_UNMANAGED, ops); + return domain; } -EXPORT_SYMBOL_GPL(iommu_paging_domain_alloc); +EXPORT_SYMBOL_GPL(iommu_paging_domain_alloc_flags); void iommu_domain_free(struct iommu_domain *domain) { |