70 строки
1.7 KiB
C
70 строки
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef LINUX_VIRTIO_H
|
|
#define LINUX_VIRTIO_H
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/spinlock.h>
|
|
|
|
struct device {
|
|
void *parent;
|
|
};
|
|
|
|
struct virtio_device {
|
|
struct device dev;
|
|
u64 features;
|
|
struct list_head vqs;
|
|
spinlock_t vqs_list_lock;
|
|
};
|
|
|
|
struct virtqueue {
|
|
struct list_head list;
|
|
void (*callback)(struct virtqueue *vq);
|
|
const char *name;
|
|
struct virtio_device *vdev;
|
|
unsigned int index;
|
|
unsigned int num_free;
|
|
void *priv;
|
|
};
|
|
|
|
/* Interfaces exported by virtio_ring. */
|
|
int virtqueue_add_sgs(struct virtqueue *vq,
|
|
struct scatterlist *sgs[],
|
|
unsigned int out_sgs,
|
|
unsigned int in_sgs,
|
|
void *data,
|
|
gfp_t gfp);
|
|
|
|
int virtqueue_add_outbuf(struct virtqueue *vq,
|
|
struct scatterlist sg[], unsigned int num,
|
|
void *data,
|
|
gfp_t gfp);
|
|
|
|
int virtqueue_add_inbuf(struct virtqueue *vq,
|
|
struct scatterlist sg[], unsigned int num,
|
|
void *data,
|
|
gfp_t gfp);
|
|
|
|
bool virtqueue_kick(struct virtqueue *vq);
|
|
|
|
void *virtqueue_get_buf(struct virtqueue *vq, unsigned int *len);
|
|
|
|
void virtqueue_disable_cb(struct virtqueue *vq);
|
|
|
|
bool virtqueue_enable_cb(struct virtqueue *vq);
|
|
bool virtqueue_enable_cb_delayed(struct virtqueue *vq);
|
|
|
|
void *virtqueue_detach_unused_buf(struct virtqueue *vq);
|
|
struct virtqueue *vring_new_virtqueue(unsigned int index,
|
|
unsigned int num,
|
|
unsigned int vring_align,
|
|
struct virtio_device *vdev,
|
|
bool weak_barriers,
|
|
bool ctx,
|
|
void *pages,
|
|
bool (*notify)(struct virtqueue *vq),
|
|
void (*callback)(struct virtqueue *vq),
|
|
const char *name);
|
|
void vring_del_virtqueue(struct virtqueue *vq);
|
|
|
|
#endif
|