1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
5 #ifndef _VIRTIO_USER_VHOST_H
6 #define _VIRTIO_USER_VHOST_H
9 #include <linux/types.h>
10 #include <linux/ioctl.h>
12 #include <rte_errno.h>
14 #include "../virtio.h"
15 #include "../virtio_logs.h"
16 #include "../virtqueue.h"
18 struct vhost_vring_state {
23 struct vhost_vring_file {
28 struct vhost_vring_addr {
33 /* Whether log address is valid. If set enables logging. */
34 #define VHOST_VRING_F_LOG 0
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.
46 uint64_t log_guest_addr;
49 #ifndef VHOST_USER_F_PROTOCOL_FEATURES
50 #define VHOST_USER_F_PROTOCOL_FEATURES 30
53 /** Protocol features. */
54 #ifndef VHOST_USER_PROTOCOL_F_MQ
55 #define VHOST_USER_PROTOCOL_F_MQ 0
58 #ifndef VHOST_USER_PROTOCOL_F_REPLY_ACK
59 #define VHOST_USER_PROTOCOL_F_REPLY_ACK 3
62 #ifndef VHOST_USER_PROTOCOL_F_STATUS
63 #define VHOST_USER_PROTOCOL_F_STATUS 16
66 #ifndef VHOST_BACKEND_F_IOTLB_MSG_V2
67 #define VHOST_BACKEND_F_IOTLB_MSG_V2 1
70 #ifndef VHOST_BACKEND_F_IOTLB_BATCH
71 #define VHOST_BACKEND_F_IOTLB_BATCH 2
74 struct vhost_memory_region {
75 uint64_t guest_phys_addr;
76 uint64_t memory_size; /* bytes */
77 uint64_t userspace_addr;
81 struct virtio_user_dev;
83 struct virtio_user_backend_ops {
84 int (*setup)(struct virtio_user_dev *dev);
85 int (*set_owner)(struct virtio_user_dev *dev);
86 int (*get_features)(struct virtio_user_dev *dev, uint64_t *features);
87 int (*set_features)(struct virtio_user_dev *dev, uint64_t features);
88 int (*get_protocol_features)(struct virtio_user_dev *dev, uint64_t *features);
89 int (*set_protocol_features)(struct virtio_user_dev *dev, uint64_t features);
90 int (*set_memory_table)(struct virtio_user_dev *dev);
91 int (*set_vring_num)(struct virtio_user_dev *dev, struct vhost_vring_state *state);
92 int (*set_vring_base)(struct virtio_user_dev *dev, struct vhost_vring_state *state);
93 int (*get_vring_base)(struct virtio_user_dev *dev, struct vhost_vring_state *state);
94 int (*set_vring_call)(struct virtio_user_dev *dev, struct vhost_vring_file *file);
95 int (*set_vring_kick)(struct virtio_user_dev *dev, struct vhost_vring_file *file);
96 int (*set_vring_addr)(struct virtio_user_dev *dev, struct vhost_vring_addr *addr);
97 int (*get_status)(struct virtio_user_dev *dev, uint8_t *status);
98 int (*set_status)(struct virtio_user_dev *dev, uint8_t status);
99 int (*enable_qp)(struct virtio_user_dev *dev, uint16_t pair_idx, int enable);
100 int (*dma_map)(struct virtio_user_dev *dev, void *addr, uint64_t iova, size_t len);
101 int (*dma_unmap)(struct virtio_user_dev *dev, void *addr, uint64_t iova, size_t len);
104 extern struct virtio_user_backend_ops virtio_ops_user;
105 extern struct virtio_user_backend_ops virtio_ops_kernel;
106 extern struct virtio_user_backend_ops virtio_ops_vdpa;