Orange Pi5 kernel

/* 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