diff options
Diffstat (limited to 'drivers/iommu/iommufd/iommufd_private.h')
| -rw-r--r-- | drivers/iommu/iommufd/iommufd_private.h | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/drivers/iommu/iommufd/iommufd_private.h b/drivers/iommu/iommufd/iommufd_private.h index 92efe30a8f0d..f1d865e6fab6 100644 --- a/drivers/iommu/iommufd/iommufd_private.h +++ b/drivers/iommu/iommufd/iommufd_private.h @@ -4,13 +4,14 @@ #ifndef __IOMMUFD_PRIVATE_H #define __IOMMUFD_PRIVATE_H -#include <linux/rwsem.h> -#include <linux/xarray.h> -#include <linux/refcount.h> -#include <linux/uaccess.h> #include <linux/iommu.h> #include <linux/iova_bitmap.h> +#include <linux/refcount.h> +#include <linux/rwsem.h> +#include <linux/uaccess.h> +#include <linux/xarray.h> #include <uapi/linux/iommufd.h> + #include "../iommu-priv.h" struct iommu_domain; @@ -324,6 +325,25 @@ to_hwpt_paging(struct iommufd_hw_pagetable *hwpt) return container_of(hwpt, struct iommufd_hwpt_paging, common); } +static inline struct iommufd_hwpt_nested * +to_hwpt_nested(struct iommufd_hw_pagetable *hwpt) +{ + return container_of(hwpt, struct iommufd_hwpt_nested, common); +} + +static inline struct iommufd_hwpt_paging * +find_hwpt_paging(struct iommufd_hw_pagetable *hwpt) +{ + switch (hwpt->obj.type) { + case IOMMUFD_OBJ_HWPT_PAGING: + return to_hwpt_paging(hwpt); + case IOMMUFD_OBJ_HWPT_NESTED: + return to_hwpt_nested(hwpt)->parent; + default: + return NULL; + } +} + static inline struct iommufd_hwpt_paging * iommufd_get_hwpt_paging(struct iommufd_ucmd *ucmd, u32 id) { @@ -490,8 +510,10 @@ static inline int iommufd_hwpt_attach_device(struct iommufd_hw_pagetable *hwpt, static inline void iommufd_hwpt_detach_device(struct iommufd_hw_pagetable *hwpt, struct iommufd_device *idev) { - if (hwpt->fault) + if (hwpt->fault) { iommufd_fault_domain_detach_dev(hwpt, idev); + return; + } iommu_detach_group(hwpt->domain, idev->igroup->group); } |