4 * Copyright (C) 2008 James Smart, Emulex Corporation
5 * Copyright (C) 2011 Red Hat, Inc. All rights reserved.
6 * Copyright (C) 2011 Mike Christie
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include <linux/blkdev.h>
27 #include <scsi/scsi_request.h>
34 typedef int (bsg_job_fn) (struct bsg_job *);
35 typedef enum blk_eh_timer_return (bsg_timeout_fn)(struct request *);
38 unsigned int payload_len;
40 struct scatterlist *sg_list;
50 /* Transport/driver specific request/reply structs */
54 unsigned int request_len;
55 unsigned int reply_len;
57 * On entry : reply_len indicates the buffer size allocated for
60 * Upon completion : the message handler must set reply_len
61 * to indicates the size of the reply to be returned to the
65 /* DMA payloads for the request/response */
66 struct bsg_buffer request_payload;
67 struct bsg_buffer reply_payload;
70 unsigned int reply_payload_rcv_len;
72 void *dd_data; /* Used for driver-specific storage */
75 void bsg_job_done(struct bsg_job *job, int result,
76 unsigned int reply_payload_rcv_len);
77 struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
78 bsg_job_fn *job_fn, bsg_timeout_fn *timeout, int dd_job_size);
79 void bsg_remove_queue(struct request_queue *q);
80 void bsg_job_put(struct bsg_job *job);
81 int __must_check bsg_job_get(struct bsg_job *job);