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