1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_BSG_H
3#define _LINUX_BSG_H
4
5#include <uapi/linux/bsg.h>
6
7struct request;
8
9#ifdef CONFIG_BLK_DEV_BSG
10struct bsg_ops {
11 int (*check_proto)(struct sg_io_v4 *hdr);
12 int (*fill_hdr)(struct request *rq, struct sg_io_v4 *hdr,
13 fmode_t mode);
14 int (*complete_rq)(struct request *rq, struct sg_io_v4 *hdr);
15 void (*free_rq)(struct request *rq);
16};
17
18struct bsg_class_device {
19 struct device *class_dev;
20 int minor;
21 struct request_queue *queue;
22 const struct bsg_ops *ops;
23};
24
25int bsg_register_queue(struct request_queue *q, struct device *parent,
26 const char *name, const struct bsg_ops *ops);
27int bsg_scsi_register_queue(struct request_queue *q, struct device *parent);
28void bsg_unregister_queue(struct request_queue *q);
29#else
30static inline int bsg_scsi_register_queue(struct request_queue *q,
31 struct device *parent)
32{
33 return 0;
34}
35static inline void bsg_unregister_queue(struct request_queue *q)
36{
37}
38#endif /* CONFIG_BLK_DEV_BSG */
39#endif /* _LINUX_BSG_H */
40