diff options
Diffstat (limited to 'drivers/iommu/iommufd/iommufd_private.h')
| -rw-r--r-- | drivers/iommu/iommufd/iommufd_private.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/iommu/iommufd/iommufd_private.h b/drivers/iommu/iommufd/iommufd_private.h index 169a30ff3bf0..f7ab6c6edafd 100644 --- a/drivers/iommu/iommufd/iommufd_private.h +++ b/drivers/iommu/iommufd/iommufd_private.h @@ -9,9 +9,14 @@ #include <linux/refcount.h> #include <linux/uaccess.h> +struct iommu_domain; +struct iommu_group; + struct iommufd_ctx { struct file *file; struct xarray objects; + + u8 account_mode; }; /* @@ -27,6 +32,7 @@ struct iommufd_ctx { struct io_pagetable { struct rw_semaphore domains_rwsem; struct xarray domains; + struct xarray access_list; unsigned int next_domain_id; struct rw_semaphore iova_rwsem; @@ -36,7 +42,45 @@ struct io_pagetable { /* IOVA that cannot be allocated, struct iopt_reserved */ struct rb_root_cached reserved_itree; u8 disable_large_pages; + unsigned long iova_alignment; +}; + +void iopt_init_table(struct io_pagetable *iopt); +void iopt_destroy_table(struct io_pagetable *iopt); +int iopt_get_pages(struct io_pagetable *iopt, unsigned long iova, + unsigned long length, struct list_head *pages_list); +void iopt_free_pages_list(struct list_head *pages_list); +enum { + IOPT_ALLOC_IOVA = 1 << 0, }; +int iopt_map_user_pages(struct iommufd_ctx *ictx, struct io_pagetable *iopt, + unsigned long *iova, void __user *uptr, + unsigned long length, int iommu_prot, + unsigned int flags); +int iopt_map_pages(struct io_pagetable *iopt, struct list_head *pages_list, + unsigned long length, unsigned long *dst_iova, + int iommu_prot, unsigned int flags); +int iopt_unmap_iova(struct io_pagetable *iopt, unsigned long iova, + unsigned long length, unsigned long *unmapped); +int iopt_unmap_all(struct io_pagetable *iopt, unsigned long *unmapped); + +int iopt_table_add_domain(struct io_pagetable *iopt, + struct iommu_domain *domain); +void iopt_table_remove_domain(struct io_pagetable *iopt, + struct iommu_domain *domain); +int iopt_table_enforce_group_resv_regions(struct io_pagetable *iopt, + struct device *device, + struct iommu_group *group, + phys_addr_t *sw_msi_start); +int iopt_set_allow_iova(struct io_pagetable *iopt, + struct rb_root_cached *allowed_iova); +int iopt_reserve_iova(struct io_pagetable *iopt, unsigned long start, + unsigned long last, void *owner); +void iopt_remove_reserved_iova(struct io_pagetable *iopt, void *owner); +int iopt_cut_iova(struct io_pagetable *iopt, unsigned long *iovas, + size_t num_iovas); +void iopt_enable_large_pages(struct io_pagetable *iopt); +int iopt_disable_large_pages(struct io_pagetable *iopt); struct iommufd_ucmd { struct iommufd_ctx *ictx; @@ -130,4 +174,12 @@ struct iommufd_object *_iommufd_object_alloc(struct iommufd_ctx *ictx, type), \ typeof(*(ptr)), obj) +struct iommufd_access { + unsigned long iova_alignment; + u32 iopt_access_list_id; +}; + +int iopt_add_access(struct io_pagetable *iopt, struct iommufd_access *access); +void iopt_remove_access(struct io_pagetable *iopt, + struct iommufd_access *access); #endif |