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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/linux/vhost_iotlb.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_VHOST_IOTLB_H
3 #define _LINUX_VHOST_IOTLB_H
5 #include <linux/interval_tree_generic.h>
7 struct vhost_iotlb_map
{
14 #define VHOST_MAP_RO 0x1
15 #define VHOST_MAP_WO 0x2
16 #define VHOST_MAP_RW 0x3
22 #define VHOST_IOTLB_FLAG_RETIRE 0x1
25 struct rb_root_cached root
;
26 struct list_head list
;
32 int vhost_iotlb_add_range(struct vhost_iotlb
*iotlb
, u64 start
, u64 last
,
33 u64 addr
, unsigned int perm
);
34 void vhost_iotlb_del_range(struct vhost_iotlb
*iotlb
, u64 start
, u64 last
);
36 struct vhost_iotlb
*vhost_iotlb_alloc(unsigned int limit
, unsigned int flags
);
37 void vhost_iotlb_free(struct vhost_iotlb
*iotlb
);
38 void vhost_iotlb_reset(struct vhost_iotlb
*iotlb
);
40 struct vhost_iotlb_map
*
41 vhost_iotlb_itree_first(struct vhost_iotlb
*iotlb
, u64 start
, u64 last
);
42 struct vhost_iotlb_map
*
43 vhost_iotlb_itree_next(struct vhost_iotlb_map
*map
, u64 start
, u64 last
);
45 void vhost_iotlb_map_free(struct vhost_iotlb
*iotlb
,
46 struct vhost_iotlb_map
*map
);