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 7 struct request; 8 9 #ifdef CONFIG_BLK_DEV_BSG 10 struct 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 18 struct bsg_class_device { 19 struct device *class_dev; 20 struct device *parent; 21 int minor; 22 struct request_queue *queue; 23 struct kref ref; 24 const struct bsg_ops *ops; 25 void (*release)(struct device *); 26 }; 27 28 int bsg_register_queue(struct request_queue *q, struct device *parent, 29 const char *name, const struct bsg_ops *ops, 30 void (*release)(struct device *)); 31 int bsg_scsi_register_queue(struct request_queue *q, struct device *parent); 32 void bsg_unregister_queue(struct request_queue *q); 33 #else 34 static inline int bsg_scsi_register_queue(struct request_queue *q, 35 struct device *parent) 36 { 37 return 0; 38 } 39 static inline void bsg_unregister_queue(struct request_queue *q) 40 { 41 } 42 #endif /* CONFIG_BLK_DEV_BSG */ 43 #endif /* _LINUX_BSG_H */ 44