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_dev; 29 struct vhost_log; 30 struct vhost_memory; 31 struct vhost_vring_file; 32 struct vhost_vring_state; 33 struct vhost_vring_addr; 34 struct vhost_scsi_target; 35 struct vhost_iotlb_msg; 36 37 typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque); 38 typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev); 39 typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev); 40 41 typedef int (*vhost_net_set_backend_op)(struct vhost_dev *dev, 42 struct vhost_vring_file *file); 43 typedef int (*vhost_net_set_mtu_op)(struct vhost_dev *dev, uint16_t mtu); 44 typedef int (*vhost_scsi_set_endpoint_op)(struct vhost_dev *dev, 45 struct vhost_scsi_target *target); 46 typedef int (*vhost_scsi_clear_endpoint_op)(struct vhost_dev *dev, 47 struct vhost_scsi_target *target); 48 typedef int (*vhost_scsi_get_abi_version_op)(struct vhost_dev *dev, 49 int *version); 50 typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base, 51 struct vhost_log *log); 52 typedef int (*vhost_set_mem_table_op)(struct vhost_dev *dev, 53 struct vhost_memory *mem); 54 typedef int (*vhost_set_vring_addr_op)(struct vhost_dev *dev, 55 struct vhost_vring_addr *addr); 56 typedef int (*vhost_set_vring_endian_op)(struct vhost_dev *dev, 57 struct vhost_vring_state *ring); 58 typedef int (*vhost_set_vring_num_op)(struct vhost_dev *dev, 59 struct vhost_vring_state *ring); 60 typedef int (*vhost_set_vring_base_op)(struct vhost_dev *dev, 61 struct vhost_vring_state *ring); 62 typedef int (*vhost_get_vring_base_op)(struct vhost_dev *dev, 63 struct vhost_vring_state *ring); 64 typedef int (*vhost_set_vring_kick_op)(struct vhost_dev *dev, 65 struct vhost_vring_file *file); 66 typedef int (*vhost_set_vring_call_op)(struct vhost_dev *dev, 67 struct vhost_vring_file *file); 68 typedef int (*vhost_set_vring_busyloop_timeout_op)(struct vhost_dev *dev, 69 struct vhost_vring_state *r); 70 typedef int (*vhost_set_features_op)(struct vhost_dev *dev, 71 uint64_t features); 72 typedef int (*vhost_get_features_op)(struct vhost_dev *dev, 73 uint64_t *features); 74 typedef int (*vhost_set_owner_op)(struct vhost_dev *dev); 75 typedef int (*vhost_reset_device_op)(struct vhost_dev *dev); 76 typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx); 77 typedef int (*vhost_set_vring_enable_op)(struct vhost_dev *dev, 78 int enable); 79 typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev); 80 typedef int (*vhost_migration_done_op)(struct vhost_dev *dev, 81 char *mac_addr); 82 typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev, 83 uint64_t start1, uint64_t size1, 84 uint64_t start2, uint64_t size2); 85 typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev, 86 uint64_t guest_cid); 87 typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start); 88 typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev, 89 int enabled); 90 typedef int (*vhost_send_device_iotlb_msg_op)(struct vhost_dev *dev, 91 struct vhost_iotlb_msg *imsg); 92 typedef int (*vhost_set_config_op)(struct vhost_dev *dev, const uint8_t *data, 93 uint32_t offset, uint32_t size, 94 uint32_t flags); 95 typedef int (*vhost_get_config_op)(struct vhost_dev *dev, uint8_t *config, 96 uint32_t config_len); 97 98 typedef struct VhostOps { 99 VhostBackendType backend_type; 100 vhost_backend_init vhost_backend_init; 101 vhost_backend_cleanup vhost_backend_cleanup; 102 vhost_backend_memslots_limit vhost_backend_memslots_limit; 103 vhost_net_set_backend_op vhost_net_set_backend; 104 vhost_net_set_mtu_op vhost_net_set_mtu; 105 vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint; 106 vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint; 107 vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version; 108 vhost_set_log_base_op vhost_set_log_base; 109 vhost_set_mem_table_op vhost_set_mem_table; 110 vhost_set_vring_addr_op vhost_set_vring_addr; 111 vhost_set_vring_endian_op vhost_set_vring_endian; 112 vhost_set_vring_num_op vhost_set_vring_num; 113 vhost_set_vring_base_op vhost_set_vring_base; 114 vhost_get_vring_base_op vhost_get_vring_base; 115 vhost_set_vring_kick_op vhost_set_vring_kick; 116 vhost_set_vring_call_op vhost_set_vring_call; 117 vhost_set_vring_busyloop_timeout_op vhost_set_vring_busyloop_timeout; 118 vhost_set_features_op vhost_set_features; 119 vhost_get_features_op vhost_get_features; 120 vhost_set_owner_op vhost_set_owner; 121 vhost_reset_device_op vhost_reset_device; 122 vhost_get_vq_index_op vhost_get_vq_index; 123 vhost_set_vring_enable_op vhost_set_vring_enable; 124 vhost_requires_shm_log_op vhost_requires_shm_log; 125 vhost_migration_done_op vhost_migration_done; 126 vhost_backend_can_merge_op vhost_backend_can_merge; 127 vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid; 128 vhost_vsock_set_running_op vhost_vsock_set_running; 129 vhost_set_iotlb_callback_op vhost_set_iotlb_callback; 130 vhost_send_device_iotlb_msg_op vhost_send_device_iotlb_msg; 131 vhost_get_config_op vhost_get_config; 132 vhost_set_config_op vhost_set_config; 133 } VhostOps; 134 135 extern const VhostOps user_ops; 136 137 int vhost_set_backend_type(struct vhost_dev *dev, 138 VhostBackendType backend_type); 139 140 int vhost_backend_update_device_iotlb(struct vhost_dev *dev, 141 uint64_t iova, uint64_t uaddr, 142 uint64_t len, 143 IOMMUAccessFlags perm); 144 145 int vhost_backend_invalidate_device_iotlb(struct vhost_dev *dev, 146 uint64_t iova, uint64_t len); 147 148 int vhost_backend_handle_iotlb_msg(struct vhost_dev *dev, 149 struct vhost_iotlb_msg *imsg); 150 151 #endif /* VHOST_BACKEND_H */ 152