1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2016 Intel Corporation 3 */ 4 5 #ifndef _VIRTIO_USER_VHOST_H 6 #define _VIRTIO_USER_VHOST_H 7 8 #include <stdint.h> 9 #include <linux/types.h> 10 #include <linux/ioctl.h> 11 12 #include <rte_errno.h> 13 14 #include "../virtio.h" 15 #include "../virtio_logs.h" 16 #include "../virtqueue.h" 17 18 struct vhost_vring_state { 19 unsigned int index; 20 unsigned int num; 21 }; 22 23 struct vhost_vring_file { 24 unsigned int index; 25 int fd; 26 }; 27 28 struct vhost_vring_addr { 29 unsigned int index; 30 /* Option flags. */ 31 unsigned int flags; 32 /* Flag values: */ 33 /* Whether log address is valid. If set enables logging. */ 34 #define VHOST_VRING_F_LOG 0 35 36 /* Start of array of descriptors (virtually contiguous) */ 37 uint64_t desc_user_addr; 38 /* Used structure address. Must be 32 bit aligned */ 39 uint64_t used_user_addr; 40 /* Available structure address. Must be 16 bit aligned */ 41 uint64_t avail_user_addr; 42 /* Logging support. */ 43 /* Log writes to used structure, at offset calculated from specified 44 * address. Address must be 32 bit aligned. 45 */ 46 uint64_t log_guest_addr; 47 }; 48 49 #ifndef VHOST_BACKEND_F_IOTLB_MSG_V2 50 #define VHOST_BACKEND_F_IOTLB_MSG_V2 1 51 #endif 52 53 #ifndef VHOST_BACKEND_F_IOTLB_BATCH 54 #define VHOST_BACKEND_F_IOTLB_BATCH 2 55 #endif 56 57 struct vhost_memory_region { 58 uint64_t guest_phys_addr; 59 uint64_t memory_size; /* bytes */ 60 uint64_t userspace_addr; 61 uint64_t mmap_offset; 62 }; 63 64 struct virtio_user_dev; 65 66 struct virtio_user_backend_ops { 67 int (*setup)(struct virtio_user_dev *dev); 68 int (*destroy)(struct virtio_user_dev *dev); 69 int (*get_backend_features)(uint64_t *features); 70 int (*set_owner)(struct virtio_user_dev *dev); 71 int (*get_features)(struct virtio_user_dev *dev, uint64_t *features); 72 int (*set_features)(struct virtio_user_dev *dev, uint64_t features); 73 int (*set_memory_table)(struct virtio_user_dev *dev); 74 int (*set_vring_num)(struct virtio_user_dev *dev, struct vhost_vring_state *state); 75 int (*set_vring_base)(struct virtio_user_dev *dev, struct vhost_vring_state *state); 76 int (*get_vring_base)(struct virtio_user_dev *dev, struct vhost_vring_state *state); 77 int (*set_vring_call)(struct virtio_user_dev *dev, struct vhost_vring_file *file); 78 int (*set_vring_kick)(struct virtio_user_dev *dev, struct vhost_vring_file *file); 79 int (*set_vring_addr)(struct virtio_user_dev *dev, struct vhost_vring_addr *addr); 80 int (*get_status)(struct virtio_user_dev *dev, uint8_t *status); 81 int (*set_status)(struct virtio_user_dev *dev, uint8_t status); 82 int (*get_config)(struct virtio_user_dev *dev, uint8_t *data, uint32_t off, uint32_t len); 83 int (*set_config)(struct virtio_user_dev *dev, const uint8_t *data, uint32_t off, 84 uint32_t len); 85 int (*cvq_enable)(struct virtio_user_dev *dev, int enable); 86 int (*enable_qp)(struct virtio_user_dev *dev, uint16_t pair_idx, int enable); 87 int (*dma_map)(struct virtio_user_dev *dev, void *addr, uint64_t iova, size_t len); 88 int (*dma_unmap)(struct virtio_user_dev *dev, void *addr, uint64_t iova, size_t len); 89 int (*update_link_state)(struct virtio_user_dev *dev); 90 int (*server_disconnect)(struct virtio_user_dev *dev); 91 int (*server_reconnect)(struct virtio_user_dev *dev); 92 int (*get_intr_fd)(struct virtio_user_dev *dev); 93 int (*map_notification_area)(struct virtio_user_dev *dev); 94 int (*unmap_notification_area)(struct virtio_user_dev *dev); 95 }; 96 97 extern struct virtio_user_backend_ops virtio_ops_user; 98 extern struct virtio_user_backend_ops virtio_ops_kernel; 99 extern struct virtio_user_backend_ops virtio_ops_vdpa; 100 101 #endif 102