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_owner_op)(struct vhost_dev *dev); 78 typedef int (*vhost_reset_device_op)(struct vhost_dev *dev); 79 typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx); 80 typedef int (*vhost_set_vring_enable_op)(struct vhost_dev *dev, 81 int enable); 82 typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev); 83 typedef int (*vhost_migration_done_op)(struct vhost_dev *dev, 84 char *mac_addr); 85 typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev, 86 uint64_t start1, uint64_t size1, 87 uint64_t start2, uint64_t size2); 88 typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev, 89 uint64_t guest_cid); 90 typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start); 91 typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev, 92 int enabled); 93 typedef int (*vhost_send_device_iotlb_msg_op)(struct vhost_dev *dev, 94 struct vhost_iotlb_msg *imsg); 95 typedef int (*vhost_set_config_op)(struct vhost_dev *dev, const uint8_t *data, 96 uint32_t offset, uint32_t size, 97 uint32_t flags); 98 typedef int (*vhost_get_config_op)(struct vhost_dev *dev, uint8_t *config, 99 uint32_t config_len); 100 101 typedef int (*vhost_crypto_create_session_op)(struct vhost_dev *dev, 102 void *session_info, 103 uint64_t *session_id); 104 typedef int (*vhost_crypto_close_session_op)(struct vhost_dev *dev, 105 uint64_t session_id); 106 107 typedef bool (*vhost_backend_mem_section_filter_op)(struct vhost_dev *dev, 108 MemoryRegionSection *section); 109 110 typedef int (*vhost_get_inflight_fd_op)(struct vhost_dev *dev, 111 uint16_t queue_size, 112 struct vhost_inflight *inflight); 113 114 typedef int (*vhost_set_inflight_fd_op)(struct vhost_dev *dev, 115 struct vhost_inflight *inflight); 116 117 typedef int (*vhost_dev_start_op)(struct vhost_dev *dev, bool started); 118 119 typedef int (*vhost_vq_get_addr_op)(struct vhost_dev *dev, 120 struct vhost_vring_addr *addr, 121 struct vhost_virtqueue *vq); 122 123 typedef int (*vhost_get_device_id_op)(struct vhost_dev *dev, uint32_t *dev_id); 124 125 typedef bool (*vhost_force_iommu_op)(struct vhost_dev *dev); 126 127 typedef struct VhostOps { 128 VhostBackendType backend_type; 129 vhost_backend_init vhost_backend_init; 130 vhost_backend_cleanup vhost_backend_cleanup; 131 vhost_backend_memslots_limit vhost_backend_memslots_limit; 132 vhost_net_set_backend_op vhost_net_set_backend; 133 vhost_net_set_mtu_op vhost_net_set_mtu; 134 vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint; 135 vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint; 136 vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version; 137 vhost_set_log_base_op vhost_set_log_base; 138 vhost_set_mem_table_op vhost_set_mem_table; 139 vhost_set_vring_addr_op vhost_set_vring_addr; 140 vhost_set_vring_endian_op vhost_set_vring_endian; 141 vhost_set_vring_num_op vhost_set_vring_num; 142 vhost_set_vring_base_op vhost_set_vring_base; 143 vhost_get_vring_base_op vhost_get_vring_base; 144 vhost_set_vring_kick_op vhost_set_vring_kick; 145 vhost_set_vring_call_op vhost_set_vring_call; 146 vhost_set_vring_busyloop_timeout_op vhost_set_vring_busyloop_timeout; 147 vhost_set_features_op vhost_set_features; 148 vhost_get_features_op vhost_get_features; 149 vhost_set_owner_op vhost_set_owner; 150 vhost_reset_device_op vhost_reset_device; 151 vhost_get_vq_index_op vhost_get_vq_index; 152 vhost_set_vring_enable_op vhost_set_vring_enable; 153 vhost_requires_shm_log_op vhost_requires_shm_log; 154 vhost_migration_done_op vhost_migration_done; 155 vhost_backend_can_merge_op vhost_backend_can_merge; 156 vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid; 157 vhost_vsock_set_running_op vhost_vsock_set_running; 158 vhost_set_iotlb_callback_op vhost_set_iotlb_callback; 159 vhost_send_device_iotlb_msg_op vhost_send_device_iotlb_msg; 160 vhost_get_config_op vhost_get_config; 161 vhost_set_config_op vhost_set_config; 162 vhost_crypto_create_session_op vhost_crypto_create_session; 163 vhost_crypto_close_session_op vhost_crypto_close_session; 164 vhost_backend_mem_section_filter_op vhost_backend_mem_section_filter; 165 vhost_get_inflight_fd_op vhost_get_inflight_fd; 166 vhost_set_inflight_fd_op vhost_set_inflight_fd; 167 vhost_dev_start_op vhost_dev_start; 168 vhost_vq_get_addr_op vhost_vq_get_addr; 169 vhost_get_device_id_op vhost_get_device_id; 170 vhost_force_iommu_op vhost_force_iommu; 171 } VhostOps; 172 173 extern const VhostOps user_ops; 174 extern const VhostOps vdpa_ops; 175 176 int vhost_set_backend_type(struct vhost_dev *dev, 177 VhostBackendType backend_type); 178 179 int vhost_backend_update_device_iotlb(struct vhost_dev *dev, 180 uint64_t iova, uint64_t uaddr, 181 uint64_t len, 182 IOMMUAccessFlags perm); 183 184 int vhost_backend_invalidate_device_iotlb(struct vhost_dev *dev, 185 uint64_t iova, uint64_t len); 186 187 int vhost_backend_handle_iotlb_msg(struct vhost_dev *dev, 188 struct vhost_iotlb_msg *imsg); 189 190 int vhost_user_gpu_set_socket(struct vhost_dev *dev, int fd); 191 192 #endif /* VHOST_BACKEND_H */ 193