Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef LINUX_VIRTIO_H
3#define LINUX_VIRTIO_H
4#include <linux/scatterlist.h>
5#include <linux/kernel.h>
6
7struct device {
8 void *parent;
9};
10
11struct virtio_device {
12 struct device dev;
13 u64 features;
14 struct list_head vqs;
15};
16
17struct virtqueue {
18 struct list_head list;
19 void (*callback)(struct virtqueue *vq);
20 const char *name;
21 struct virtio_device *vdev;
22 unsigned int index;
23 unsigned int num_free;
24 void *priv;
25};
26
27/* Interfaces exported by virtio_ring. */
28int virtqueue_add_sgs(struct virtqueue *vq,
29 struct scatterlist *sgs[],
30 unsigned int out_sgs,
31 unsigned int in_sgs,
32 void *data,
33 gfp_t gfp);
34
35int virtqueue_add_outbuf(struct virtqueue *vq,
36 struct scatterlist sg[], unsigned int num,
37 void *data,
38 gfp_t gfp);
39
40int virtqueue_add_inbuf(struct virtqueue *vq,
41 struct scatterlist sg[], unsigned int num,
42 void *data,
43 gfp_t gfp);
44
45bool virtqueue_kick(struct virtqueue *vq);
46
47void *virtqueue_get_buf(struct virtqueue *vq, unsigned int *len);
48
49void virtqueue_disable_cb(struct virtqueue *vq);
50
51bool virtqueue_enable_cb(struct virtqueue *vq);
52bool virtqueue_enable_cb_delayed(struct virtqueue *vq);
53
54void *virtqueue_detach_unused_buf(struct virtqueue *vq);
55struct virtqueue *vring_new_virtqueue(unsigned int index,
56 unsigned int num,
57 unsigned int vring_align,
58 struct virtio_device *vdev,
59 bool weak_barriers,
60 bool ctx,
61 void *pages,
62 bool (*notify)(struct virtqueue *vq),
63 void (*callback)(struct virtqueue *vq),
64 const char *name);
65void vring_del_virtqueue(struct virtqueue *vq);
66
67#endif