LXR linux/include/linux/bsg.h

   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