48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/* 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;
|
|
};
|
|
|
|
#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(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
|