/* *  BSG helper library * *  Copyright (C) 2008   James Smart, Emulex Corporation *  Copyright (C) 2011   Red Hat, Inc.  All rights reserved. *  Copyright (C) 2011   Mike Christie * *  This program is free software; you can redistribute it and/or modify *  it under the terms of the GNU General Public License as published by *  the Free Software Foundation; either version 2 of the License, or *  (at your option) any later version. * *  This program is distributed in the hope that it will be useful, *  but WITHOUT ANY WARRANTY; without even the implied warranty of *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the *  GNU General Public License for more details. * *  You should have received a copy of the GNU General Public License *  along with this program; if not, write to the Free Software *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * */#ifndef _BLK_BSG_#define _BLK_BSG_ #include <linux/blkdev.h> struct request;struct device;struct scatterlist;struct request_queue; struct bsg_buffer {	unsigned int payload_len;	int sg_cnt;	struct scatterlist *sg_list;}; struct bsg_job {	struct device *dev;	struct request *req; 	/* Transport/driver specific request/reply structs */	void *request;	void *reply; 	unsigned int request_len;	unsigned int reply_len;	/*	 * On entry : reply_len indicates the buffer size allocated for	 * the reply.	 *	 * Upon completion : the message handler must set reply_len	 *  to indicates the size of the reply to be returned to the	 *  caller.	 */ 	/* DMA payloads for the request/response */	struct bsg_buffer request_payload;	struct bsg_buffer reply_payload; 	void *dd_data;		/* Used for driver-specific storage */}; void bsg_job_done(struct bsg_job *job, int result,		  unsigned int reply_payload_rcv_len);int bsg_setup_queue(struct device *dev, struct request_queue *q, char *name,		    bsg_job_fn *job_fn, int dd_job_size);void bsg_request_fn(struct request_queue *q);void bsg_remove_queue(struct request_queue *q);void bsg_goose_queue(struct request_queue *q); #endif