1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * Copyright (C) 2008 James Smart, Emulex Corporation
6 * Copyright (C) 2011 Red Hat, Inc. All rights reserved.
7 * Copyright (C) 2011 Mike Christie
12 #include <linux/blkdev.h>
13 #include <scsi/scsi_request.h>
21 typedef int (bsg_job_fn) (struct bsg_job *);
22 typedef enum blk_eh_timer_return (bsg_timeout_fn)(struct request *);
25 unsigned int payload_len;
27 struct scatterlist *sg_list;
37 /* Transport/driver specific request/reply structs */
41 unsigned int request_len;
42 unsigned int reply_len;
44 * On entry : reply_len indicates the buffer size allocated for
47 * Upon completion : the message handler must set reply_len
48 * to indicates the size of the reply to be returned to the
52 /* DMA payloads for the request/response */
53 struct bsg_buffer request_payload;
54 struct bsg_buffer reply_payload;
57 unsigned int reply_payload_rcv_len;
60 struct request *bidi_rq;
63 void *dd_data; /* Used for driver-specific storage */
66 void bsg_job_done(struct bsg_job *job, int result,
67 unsigned int reply_payload_rcv_len);
68 struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
69 bsg_job_fn *job_fn, bsg_timeout_fn *timeout, int dd_job_size);
70 void bsg_remove_queue(struct request_queue *q);
71 void bsg_job_put(struct bsg_job *job);
72 int __must_check bsg_job_get(struct bsg_job *job);