include/hw/virtio/vhost-backend.h

   1 /*
   2  * vhost-backend
   3  *
   4  * Copyright (c) 2013 Virtual Open Systems Sarl.
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  *
   9  */
  10
  11 #ifndef VHOST_BACKEND_H
  12 #define VHOST_BACKEND_H
  13
  14 #include "exec/memory.h"
  15
  16 typedef 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
  23 typedef enum VhostSetConfigType {
  24     VHOST_SET_CONFIG_TYPE_MASTER = 0,
  25     VHOST_SET_CONFIG_TYPE_MIGRATION = 1,
  26 } VhostSetConfigType;
  27
  28 struct vhost_inflight;
  29 struct vhost_dev;
  30 struct vhost_log;
  31 struct vhost_memory;
  32 struct vhost_vring_file;
  33 struct vhost_vring_state;
  34 struct vhost_vring_addr;
  35 struct vhost_scsi_target;
  36 struct vhost_iotlb_msg;
  37
  38 typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
  39 typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
  40 typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev);
  41
  42 typedef int (*vhost_net_set_backend_op)(struct vhost_dev *dev,
  43                                 struct vhost_vring_file *file);
  44 typedef int (*vhost_net_set_mtu_op)(struct vhost_dev *dev, uint16_t mtu);
  45 typedef int (*vhost_scsi_set_endpoint_op)(struct vhost_dev *dev,
  46                                   struct vhost_scsi_target *target);
  47 typedef int (*vhost_scsi_clear_endpoint_op)(struct vhost_dev *dev,
  48                                     struct vhost_scsi_target *target);
  49 typedef int (*vhost_scsi_get_abi_version_op)(struct vhost_dev *dev,
  50                                              int *version);
  51 typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base,
  52                                      struct vhost_log *log);
  53 typedef int (*vhost_set_mem_table_op)(struct vhost_dev *dev,
  54                                       struct vhost_memory *mem);
  55 typedef int (*vhost_set_vring_addr_op)(struct vhost_dev *dev,
  56                                        struct vhost_vring_addr *addr);
  57 typedef int (*vhost_set_vring_endian_op)(struct vhost_dev *dev,
  58                                          struct vhost_vring_state *ring);
  59 typedef int (*vhost_set_vring_num_op)(struct vhost_dev *dev,
  60                                       struct vhost_vring_state *ring);
  61 typedef int (*vhost_set_vring_base_op)(struct vhost_dev *dev,
  62                                        struct vhost_vring_state *ring);
  63 typedef int (*vhost_get_vring_base_op)(struct vhost_dev *dev,
  64                                        struct vhost_vring_state *ring);
  65 typedef int (*vhost_set_vring_kick_op)(struct vhost_dev *dev,
  66                                        struct vhost_vring_file *file);
  67 typedef int (*vhost_set_vring_call_op)(struct vhost_dev *dev,
  68                                        struct vhost_vring_file *file);
  69 typedef int (*vhost_set_vring_busyloop_timeout_op)(struct vhost_dev *dev,
  70                                                    struct vhost_vring_state *r);
  71 typedef int (*vhost_set_features_op)(struct vhost_dev *dev,
  72                                      uint64_t features);
  73 typedef int (*vhost_get_features_op)(struct vhost_dev *dev,
  74                                      uint64_t *features);
  75 typedef int (*vhost_set_owner_op)(struct vhost_dev *dev);
  76 typedef int (*vhost_reset_device_op)(struct vhost_dev *dev);
  77 typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx);
  78 typedef int (*vhost_set_vring_enable_op)(struct vhost_dev *dev,
  79                                          int enable);
  80 typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev);
  81 typedef int (*vhost_migration_done_op)(struct vhost_dev *dev,
  82                                        char *mac_addr);
  83 typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev,
  84                                            uint64_t start1, uint64_t size1,
  85                                            uint64_t start2, uint64_t size2);
  86 typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev,
  87                                             uint64_t guest_cid);
  88 typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start);
  89 typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev,
  90                                            int enabled);
  91 typedef int (*vhost_send_device_iotlb_msg_op)(struct vhost_dev *dev,
  92                                               struct vhost_iotlb_msg *imsg);
  93 typedef int (*vhost_set_config_op)(struct vhost_dev *dev, const uint8_t *data,
  94                                    uint32_t offset, uint32_t size,
  95                                    uint32_t flags);
  96 typedef int (*vhost_get_config_op)(struct vhost_dev *dev, uint8_t *config,
  97                                    uint32_t config_len);
  98
  99 typedef int (*vhost_crypto_create_session_op)(struct vhost_dev *dev,
 100                                               void *session_info,
 101                                               uint64_t *session_id);
 102 typedef int (*vhost_crypto_close_session_op)(struct vhost_dev *dev,
 103                                              uint64_t session_id);
 104
 105 typedef bool (*vhost_backend_mem_section_filter_op)(struct vhost_dev *dev,
 106                                                 MemoryRegionSection *section);
 107
 108 typedef int (*vhost_get_inflight_fd_op)(struct vhost_dev *dev,
 109                                         uint16_t queue_size,
 110                                         struct vhost_inflight *inflight);
 111
 112 typedef int (*vhost_set_inflight_fd_op)(struct vhost_dev *dev,
 113                                         struct vhost_inflight *inflight);
 114
 115 typedef struct VhostOps {
 116     VhostBackendType backend_type;
 117     vhost_backend_init vhost_backend_init;
 118     vhost_backend_cleanup vhost_backend_cleanup;
 119     vhost_backend_memslots_limit vhost_backend_memslots_limit;
 120     vhost_net_set_backend_op vhost_net_set_backend;
 121     vhost_net_set_mtu_op vhost_net_set_mtu;
 122     vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint;
 123     vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint;
 124     vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version;
 125     vhost_set_log_base_op vhost_set_log_base;
 126     vhost_set_mem_table_op vhost_set_mem_table;
 127     vhost_set_vring_addr_op vhost_set_vring_addr;
 128     vhost_set_vring_endian_op vhost_set_vring_endian;
 129     vhost_set_vring_num_op vhost_set_vring_num;
 130     vhost_set_vring_base_op vhost_set_vring_base;
 131     vhost_get_vring_base_op vhost_get_vring_base;
 132     vhost_set_vring_kick_op vhost_set_vring_kick;
 133     vhost_set_vring_call_op vhost_set_vring_call;
 134     vhost_set_vring_busyloop_timeout_op vhost_set_vring_busyloop_timeout;
 135     vhost_set_features_op vhost_set_features;
 136     vhost_get_features_op vhost_get_features;
 137     vhost_set_owner_op vhost_set_owner;
 138     vhost_reset_device_op vhost_reset_device;
 139     vhost_get_vq_index_op vhost_get_vq_index;
 140     vhost_set_vring_enable_op vhost_set_vring_enable;
 141     vhost_requires_shm_log_op vhost_requires_shm_log;
 142     vhost_migration_done_op vhost_migration_done;
 143     vhost_backend_can_merge_op vhost_backend_can_merge;
 144     vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid;
 145     vhost_vsock_set_running_op vhost_vsock_set_running;
 146     vhost_set_iotlb_callback_op vhost_set_iotlb_callback;
 147     vhost_send_device_iotlb_msg_op vhost_send_device_iotlb_msg;
 148     vhost_get_config_op vhost_get_config;
 149     vhost_set_config_op vhost_set_config;
 150     vhost_crypto_create_session_op vhost_crypto_create_session;
 151     vhost_crypto_close_session_op vhost_crypto_close_session;
 152     vhost_backend_mem_section_filter_op vhost_backend_mem_section_filter;
 153     vhost_get_inflight_fd_op vhost_get_inflight_fd;
 154     vhost_set_inflight_fd_op vhost_set_inflight_fd;
 155 } VhostOps;
 156
 157 extern const VhostOps user_ops;
 158
 159 int vhost_set_backend_type(struct vhost_dev *dev,
 160                            VhostBackendType backend_type);
 161
 162 int vhost_backend_update_device_iotlb(struct vhost_dev *dev,
 163                                              uint64_t iova, uint64_t uaddr,
 164                                              uint64_t len,
 165                                              IOMMUAccessFlags perm);
 166
 167 int vhost_backend_invalidate_device_iotlb(struct vhost_dev *dev,
 168                                                  uint64_t iova, uint64_t len);
 169
 170 int vhost_backend_handle_iotlb_msg(struct vhost_dev *dev,
 171                                           struct vhost_iotlb_msg *imsg);
 172
 173 int vhost_user_gpu_set_socket(struct vhost_dev *dev, int fd);
 174
 175 #endif /* VHOST_BACKEND_H */