mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
1.2 KiB
47 lines
1.2 KiB
/* 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
|
|
|