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11#ifndef VHOST_BACKEND_H
12#define VHOST_BACKEND_H
13
14#include "exec/memory.h"
15
16typedef enum VhostBackendType {
17 VHOST_BACKEND_TYPE_NONE = 0,
18 VHOST_BACKEND_TYPE_KERNEL = 1,
19 VHOST_BACKEND_TYPE_USER = 2,
20 VHOST_BACKEND_TYPE_MAX = 3,
21} VhostBackendType;
22
23struct vhost_dev;
24struct vhost_log;
25struct vhost_memory;
26struct vhost_vring_file;
27struct vhost_vring_state;
28struct vhost_vring_addr;
29struct vhost_scsi_target;
30struct vhost_iotlb_msg;
31
32typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
33typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
34typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev);
35
36typedef int (*vhost_net_set_backend_op)(struct vhost_dev *dev,
37 struct vhost_vring_file *file);
38typedef int (*vhost_net_set_mtu_op)(struct vhost_dev *dev, uint16_t mtu);
39typedef int (*vhost_scsi_set_endpoint_op)(struct vhost_dev *dev,
40 struct vhost_scsi_target *target);
41typedef int (*vhost_scsi_clear_endpoint_op)(struct vhost_dev *dev,
42 struct vhost_scsi_target *target);
43typedef int (*vhost_scsi_get_abi_version_op)(struct vhost_dev *dev,
44 int *version);
45typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base,
46 struct vhost_log *log);
47typedef int (*vhost_set_mem_table_op)(struct vhost_dev *dev,
48 struct vhost_memory *mem);
49typedef int (*vhost_set_vring_addr_op)(struct vhost_dev *dev,
50 struct vhost_vring_addr *addr);
51typedef int (*vhost_set_vring_endian_op)(struct vhost_dev *dev,
52 struct vhost_vring_state *ring);
53typedef int (*vhost_set_vring_num_op)(struct vhost_dev *dev,
54 struct vhost_vring_state *ring);
55typedef int (*vhost_set_vring_base_op)(struct vhost_dev *dev,
56 struct vhost_vring_state *ring);
57typedef int (*vhost_get_vring_base_op)(struct vhost_dev *dev,
58 struct vhost_vring_state *ring);
59typedef int (*vhost_set_vring_kick_op)(struct vhost_dev *dev,
60 struct vhost_vring_file *file);
61typedef int (*vhost_set_vring_call_op)(struct vhost_dev *dev,
62 struct vhost_vring_file *file);
63typedef int (*vhost_set_vring_busyloop_timeout_op)(struct vhost_dev *dev,
64 struct vhost_vring_state *r);
65typedef int (*vhost_set_features_op)(struct vhost_dev *dev,
66 uint64_t features);
67typedef int (*vhost_get_features_op)(struct vhost_dev *dev,
68 uint64_t *features);
69typedef int (*vhost_set_owner_op)(struct vhost_dev *dev);
70typedef int (*vhost_reset_device_op)(struct vhost_dev *dev);
71typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx);
72typedef int (*vhost_set_vring_enable_op)(struct vhost_dev *dev,
73 int enable);
74typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev);
75typedef int (*vhost_migration_done_op)(struct vhost_dev *dev,
76 char *mac_addr);
77typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev,
78 uint64_t start1, uint64_t size1,
79 uint64_t start2, uint64_t size2);
80typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev,
81 uint64_t guest_cid);
82typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start);
83typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev,
84 int enabled);
85typedef int (*vhost_send_device_iotlb_msg_op)(struct vhost_dev *dev,
86 struct vhost_iotlb_msg *imsg);
87
88typedef struct VhostOps {
89 VhostBackendType backend_type;
90 vhost_backend_init vhost_backend_init;
91 vhost_backend_cleanup vhost_backend_cleanup;
92 vhost_backend_memslots_limit vhost_backend_memslots_limit;
93 vhost_net_set_backend_op vhost_net_set_backend;
94 vhost_net_set_mtu_op vhost_net_set_mtu;
95 vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint;
96 vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint;
97 vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version;
98 vhost_set_log_base_op vhost_set_log_base;
99 vhost_set_mem_table_op vhost_set_mem_table;
100 vhost_set_vring_addr_op vhost_set_vring_addr;
101 vhost_set_vring_endian_op vhost_set_vring_endian;
102 vhost_set_vring_num_op vhost_set_vring_num;
103 vhost_set_vring_base_op vhost_set_vring_base;
104 vhost_get_vring_base_op vhost_get_vring_base;
105 vhost_set_vring_kick_op vhost_set_vring_kick;
106 vhost_set_vring_call_op vhost_set_vring_call;
107 vhost_set_vring_busyloop_timeout_op vhost_set_vring_busyloop_timeout;
108 vhost_set_features_op vhost_set_features;
109 vhost_get_features_op vhost_get_features;
110 vhost_set_owner_op vhost_set_owner;
111 vhost_reset_device_op vhost_reset_device;
112 vhost_get_vq_index_op vhost_get_vq_index;
113 vhost_set_vring_enable_op vhost_set_vring_enable;
114 vhost_requires_shm_log_op vhost_requires_shm_log;
115 vhost_migration_done_op vhost_migration_done;
116 vhost_backend_can_merge_op vhost_backend_can_merge;
117 vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid;
118 vhost_vsock_set_running_op vhost_vsock_set_running;
119 vhost_set_iotlb_callback_op vhost_set_iotlb_callback;
120 vhost_send_device_iotlb_msg_op vhost_send_device_iotlb_msg;
121} VhostOps;
122
123extern const VhostOps user_ops;
124
125int vhost_set_backend_type(struct vhost_dev *dev,
126 VhostBackendType backend_type);
127
128int vhost_backend_update_device_iotlb(struct vhost_dev *dev,
129 uint64_t iova, uint64_t uaddr,
130 uint64_t len,
131 IOMMUAccessFlags perm);
132
133int vhost_backend_invalidate_device_iotlb(struct vhost_dev *dev,
134 uint64_t iova, uint64_t len);
135
136int vhost_backend_handle_iotlb_msg(struct vhost_dev *dev,
137 struct vhost_iotlb_msg *imsg);
138
139#endif
140
