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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [scsi/] [qlogicisp.h] - Blame information for rev 1765

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1 1275 phoenix
/*
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 * QLogic ISP1020 Intelligent SCSI Processor Driver (PCI)
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 * Written by Erik H. Moe, ehm@cris.com
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 * Copyright 1995, Erik H. Moe
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 *
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 * This program is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License as published by the
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 * Free Software Foundation; either version 2, or (at your option) any
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 * later version.
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 *
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 * This program is distributed in the hope that it will be useful, but
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 * WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * General Public License for more details.
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 */
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/* Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu> */
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/*
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 * $Date: 2004-04-15 02:09:25 $
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 * $Revision: 1.1.1.1 $
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 *
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 * $Log: not supported by cvs2svn $
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 * Revision 0.5  1995/09/22  02:32:56  root
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 * do auto request sense
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 *
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 * Revision 0.4  1995/08/07  04:48:28  root
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 * supply firmware with driver.
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 * numerous bug fixes/general cleanup of code.
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 *
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 * Revision 0.3  1995/07/16  16:17:16  root
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 * added reset/abort code.
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 *
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 * Revision 0.2  1995/06/29  03:19:43  root
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 * fixed biosparam.
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 * added queue protocol.
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 *
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 * Revision 0.1  1995/06/25  01:56:13  root
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 * Initial release.
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 *
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 */
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#ifndef _QLOGICISP_H
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#define _QLOGICISP_H
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/*
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 * With the qlogic interface, every queue slot can hold a SCSI
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 * command with up to 4 scatter/gather entries.  If we need more
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 * than 4 entries, continuation entries can be used that hold
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 * another 7 entries each.  Unlike for other drivers, this means
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 * that the maximum number of scatter/gather entries we can
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 * support at any given time is a function of the number of queue
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 * slots available.  That is, host->can_queue and host->sg_tablesize
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 * are dynamic and _not_ independent.  This all works fine because
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 * requests are queued serially and the scatter/gather limit is
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 * determined for each queue request anew.
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 */
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#define QLOGICISP_REQ_QUEUE_LEN 63      /* must be power of two - 1 */
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#define QLOGICISP_MAX_SG(ql)    (4 + ((ql) > 0) ? 7*((ql) - 1) : 0)
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int isp1020_detect(Scsi_Host_Template *);
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int isp1020_release(struct Scsi_Host *);
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const char * isp1020_info(struct Scsi_Host *);
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int isp1020_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
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int isp1020_abort(Scsi_Cmnd *);
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int isp1020_reset(Scsi_Cmnd *, unsigned int);
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int isp1020_biosparam(Disk *, kdev_t, int[]);
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#ifndef NULL
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#define NULL (0)
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#endif
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#define QLOGICISP {                                                        \
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        detect:                 isp1020_detect,                            \
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        release:                isp1020_release,                           \
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        info:                   isp1020_info,                              \
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        queuecommand:           isp1020_queuecommand,                      \
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        abort:                  isp1020_abort,                             \
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        reset:                  isp1020_reset,                             \
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        bios_param:             isp1020_biosparam,                         \
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        can_queue:              QLOGICISP_REQ_QUEUE_LEN,                   \
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        this_id:                -1,                                        \
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        sg_tablesize:           QLOGICISP_MAX_SG(QLOGICISP_REQ_QUEUE_LEN), \
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        cmd_per_lun:            1,                                         \
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        present:                0,                                          \
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        unchecked_isa_dma:      0,                                          \
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        use_clustering:         DISABLE_CLUSTERING                         \
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}
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#endif /* _QLOGICISP_H */

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