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vhost_iotlb.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_VHOST_IOTLB_H #define _LINUX_VHOST_IOTLB_H #include <linux/interval_tree_generic.h> struct vhost_iotlb_map { struct rb_node rb; struct list_head link; u64 start; u64 last; u64 size; u64 addr; #define VHOST_MAP_RO 0x1 #define VHOST_MAP_WO 0x2 #define VHOST_MAP_RW 0x3 u32 perm; u32 flags_padding; u64 __subtree_last; void *opaque; }; #define VHOST_IOTLB_FLAG_RETIRE 0x1 struct vhost_iotlb { struct rb_root_cached root; struct list_head list; unsigned int limit; unsigned int nmaps; unsigned int flags; }; int vhost_iotlb_add_range_ctx(struct vhost_iotlb *iotlb, u64 start, u64 last, u64 addr, unsigned int perm, void *opaque); int vhost_iotlb_add_range(struct vhost_iotlb *iotlb, u64 start, u64 last, u64 addr, unsigned int perm); void vhost_iotlb_del_range(struct vhost_iotlb *iotlb, u64 start, u64 last); struct vhost_iotlb *vhost_iotlb_alloc(unsigned int limit, unsigned int flags); void vhost_iotlb_free(struct vhost_iotlb *iotlb); void vhost_iotlb_reset(struct vhost_iotlb *iotlb); struct vhost_iotlb_map * vhost_iotlb_itree_first(struct vhost_iotlb *iotlb, u64 start, u64 last); struct vhost_iotlb_map * vhost_iotlb_itree_next(struct vhost_iotlb_map *map, u64 start, u64 last); void vhost_iotlb_map_free(struct vhost_iotlb *iotlb, struct vhost_iotlb_map *map); #endif