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_VDPA = 3,
  21     VHOST_BACKEND_TYPE_MAX = 4,
  22 } VhostBackendType;
  23
  24 typedef enum VhostSetConfigType {
  25     VHOST_SET_CONFIG_TYPE_MASTER = 0,
  26     VHOST_SET_CONFIG_TYPE_MIGRATION = 1,
  27 } VhostSetConfigType;
  28
  29 struct vhost_inflight;
  30 struct vhost_dev;
  31 struct vhost_log;
  32 struct vhost_memory;
  33 struct vhost_vring_file;
  34 struct vhost_vring_state;
  35 struct vhost_vring_addr;
  36 struct vhost_scsi_target;
  37 struct vhost_iotlb_msg;
  38 struct vhost_virtqueue;
  39
  40 typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
  41 typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
  42 typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev);
  43
  44 typedef int (*vhost_net_set_backend_op)(struct vhost_dev *dev,
  45                                 struct vhost_vring_file *file);
  46 typedef int (*vhost_net_set_mtu_op)(struct vhost_dev *dev, uint16_t mtu);
  47 typedef int (*vhost_scsi_set_endpoint_op)(struct vhost_dev *dev,
  48                                   struct vhost_scsi_target *target);
  49 typedef int (*vhost_scsi_clear_endpoint_op)(struct vhost_dev *dev,
  50                                     struct vhost_scsi_target *target);
  51 typedef int (*vhost_scsi_get_abi_version_op)(struct vhost_dev *dev,
  52                                              int *version);
  53 typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base,
  54                                      struct vhost_log *log);
  55 typedef int (*vhost_set_mem_table_op)(struct vhost_dev *dev,
  56                                       struct vhost_memory *mem);
  57 typedef int (*vhost_set_vring_addr_op)(struct vhost_dev *dev,
  58                                        struct vhost_vring_addr *addr);
  59 typedef int (*vhost_set_vring_endian_op)(struct vhost_dev *dev,
  60                                          struct vhost_vring_state *ring);
  61 typedef int (*vhost_set_vring_num_op)(struct vhost_dev *dev,
  62                                       struct vhost_vring_state *ring);
  63 typedef int (*vhost_set_vring_base_op)(struct vhost_dev *dev,
  64                                        struct vhost_vring_state *ring);
  65 typedef int (*vhost_get_vring_base_op)(struct vhost_dev *dev,
  66                                        struct vhost_vring_state *ring);
  67 typedef int (*vhost_set_vring_kick_op)(struct vhost_dev *dev,
  68                                        struct vhost_vring_file *file);
  69 typedef int (*vhost_set_vring_call_op)(struct vhost_dev *dev,
  70                                        struct vhost_vring_file *file);
  71 typedef int (*vhost_set_vring_busyloop_timeout_op)(struct vhost_dev *dev,
  72                                                    struct vhost_vring_state *r);
  73 typedef int (*vhost_set_features_op)(struct vhost_dev *dev,
  74                                      uint64_t features);
  75 typedef int (*vhost_get_features_op)(struct vhost_dev *dev,
  76                                      uint64_t *features);
  77 typedef int (*vhost_set_backend_cap_op)(struct vhost_dev *dev);
  78 typedef int (*vhost_set_owner_op)(struct vhost_dev *dev);
  79 typedef int (*vhost_reset_device_op)(struct vhost_dev *dev);
  80 typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx);
  81 typedef int (*vhost_set_vring_enable_op)(struct vhost_dev *dev,
  82                                          int enable);
  83 typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev);
  84 typedef int (*vhost_migration_done_op)(struct vhost_dev *dev,
  85                                        char *mac_addr);
  86 typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev,
  87                                            uint64_t start1, uint64_t size1,
  88                                            uint64_t start2, uint64_t size2);
  89 typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev,
  90                                             uint64_t guest_cid);
  91 typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start);
  92 typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev,
  93                                            int enabled);
  94 typedef int (*vhost_send_device_iotlb_msg_op)(struct vhost_dev *dev,
  95                                               struct vhost_iotlb_msg *imsg);
  96 typedef int (*vhost_set_config_op)(struct vhost_dev *dev, const uint8_t *data,
  97                                    uint32_t offset, uint32_t size,
  98                                    uint32_t flags);
  99 typedef int (*vhost_get_config_op)(struct vhost_dev *dev, uint8_t *config,
 100                                    uint32_t config_len);
 101
 102 typedef int (*vhost_crypto_create_session_op)(struct vhost_dev *dev,
 103                                               void *session_info,
 104                                               uint64_t *session_id);
 105 typedef int (*vhost_crypto_close_session_op)(struct vhost_dev *dev,
 106                                              uint64_t session_id);
 107
 108 typedef bool (*vhost_backend_mem_section_filter_op)(struct vhost_dev *dev,
 109                                                 MemoryRegionSection *section);
 110
 111 typedef int (*vhost_get_inflight_fd_op)(struct vhost_dev *dev,
 112                                         uint16_t queue_size,
 113                                         struct vhost_inflight *inflight);
 114
 115 typedef int (*vhost_set_inflight_fd_op)(struct vhost_dev *dev,
 116                                         struct vhost_inflight *inflight);
 117
 118 typedef int (*vhost_dev_start_op)(struct vhost_dev *dev, bool started);
 119
 120 typedef int (*vhost_vq_get_addr_op)(struct vhost_dev *dev,
 121                     struct vhost_vring_addr *addr,
 122                     struct vhost_virtqueue *vq);
 123
 124 typedef int (*vhost_get_device_id_op)(struct vhost_dev *dev, uint32_t *dev_id);
 125
 126 typedef bool (*vhost_force_iommu_op)(struct vhost_dev *dev);
 127
 128 typedef struct VhostOps {
 129     VhostBackendType backend_type;
 130     vhost_backend_init vhost_backend_init;
 131     vhost_backend_cleanup vhost_backend_cleanup;
 132     vhost_backend_memslots_limit vhost_backend_memslots_limit;
 133     vhost_net_set_backend_op vhost_net_set_backend;
 134     vhost_net_set_mtu_op vhost_net_set_mtu;
 135     vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint;
 136     vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint;
 137     vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version;
 138     vhost_set_log_base_op vhost_set_log_base;
 139     vhost_set_mem_table_op vhost_set_mem_table;
 140     vhost_set_vring_addr_op vhost_set_vring_addr;
 141     vhost_set_vring_endian_op vhost_set_vring_endian;
 142     vhost_set_vring_num_op vhost_set_vring_num;
 143     vhost_set_vring_base_op vhost_set_vring_base;
 144     vhost_get_vring_base_op vhost_get_vring_base;
 145     vhost_set_vring_kick_op vhost_set_vring_kick;
 146     vhost_set_vring_call_op vhost_set_vring_call;
 147     vhost_set_vring_busyloop_timeout_op vhost_set_vring_busyloop_timeout;
 148     vhost_set_features_op vhost_set_features;
 149     vhost_get_features_op vhost_get_features;
 150     vhost_set_backend_cap_op vhost_set_backend_cap;
 151     vhost_set_owner_op vhost_set_owner;
 152     vhost_reset_device_op vhost_reset_device;
 153     vhost_get_vq_index_op vhost_get_vq_index;
 154     vhost_set_vring_enable_op vhost_set_vring_enable;
 155     vhost_requires_shm_log_op vhost_requires_shm_log;
 156     vhost_migration_done_op vhost_migration_done;
 157     vhost_backend_can_merge_op vhost_backend_can_merge;
 158     vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid;
 159     vhost_vsock_set_running_op vhost_vsock_set_running;
 160     vhost_set_iotlb_callback_op vhost_set_iotlb_callback;
 161     vhost_send_device_iotlb_msg_op vhost_send_device_iotlb_msg;
 162     vhost_get_config_op vhost_get_config;
 163     vhost_set_config_op vhost_set_config;
 164     vhost_crypto_create_session_op vhost_crypto_create_session;
 165     vhost_crypto_close_session_op vhost_crypto_close_session;
 166     vhost_backend_mem_section_filter_op vhost_backend_mem_section_filter;
 167     vhost_get_inflight_fd_op vhost_get_inflight_fd;
 168     vhost_set_inflight_fd_op vhost_set_inflight_fd;
 169     vhost_dev_start_op vhost_dev_start;
 170     vhost_vq_get_addr_op  vhost_vq_get_addr;
 171     vhost_get_device_id_op vhost_get_device_id;
 172     vhost_force_iommu_op vhost_force_iommu;
 173 } VhostOps;
 174
 175 extern const VhostOps user_ops;
 176 extern const VhostOps vdpa_ops;
 177
 178 int vhost_set_backend_type(struct vhost_dev *dev,
 179                            VhostBackendType backend_type);
 180
 181 int vhost_backend_update_device_iotlb(struct vhost_dev *dev,
 182                                              uint64_t iova, uint64_t uaddr,
 183                                              uint64_t len,
 184                                              IOMMUAccessFlags perm);
 185
 186 int vhost_backend_invalidate_device_iotlb(struct vhost_dev *dev,
 187                                                  uint64_t iova, uint64_t len);
 188
 189 int vhost_backend_handle_iotlb_msg(struct vhost_dev *dev,
 190                                           struct vhost_iotlb_msg *imsg);
 191
 192 int vhost_user_gpu_set_socket(struct vhost_dev *dev, int fd);
 193
 194 #endif /* VHOST_BACKEND_H */