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phoenix |
/*
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* QLogic ISP2x00 SCSI-FCP
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*
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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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/* This is a version of the isp1020 driver which was modified by
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* Chris Loveland <cwl@iol.unh.edu> to support the isp2x00
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*/
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/*
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* $Date: 2004-04-15 02:07:48 $
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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 _QLOGICFC_H
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#define _QLOGICFC_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 2 scatter/gather entries. If we need more
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* than 2 entries, continuation entries can be used that hold
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* another 5 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 DATASEGS_PER_COMMAND 2
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#define DATASEGS_PER_CONT 5
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#define QLOGICFC_REQ_QUEUE_LEN 127 /* must be power of two - 1 */
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#define QLOGICFC_MAX_SG(ql) (DATASEGS_PER_COMMAND + (((ql) > 0) ? DATASEGS_PER_CONT*((ql) - 1) : 0))
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#define QLOGICFC_CMD_PER_LUN 8
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int isp2x00_detect(Scsi_Host_Template *);
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int isp2x00_release(struct Scsi_Host *);
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const char * isp2x00_info(struct Scsi_Host *);
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int isp2x00_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
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int isp2x00_abort(Scsi_Cmnd *);
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int isp2x00_reset(Scsi_Cmnd *, unsigned int);
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int isp2x00_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 QLOGICFC { \
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detect: isp2x00_detect, \
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release: isp2x00_release, \
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info: isp2x00_info, \
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queuecommand: isp2x00_queuecommand, \
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eh_abort_handler: isp2x00_abort, \
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reset: isp2x00_reset, \
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bios_param: isp2x00_biosparam, \
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can_queue: QLOGICFC_REQ_QUEUE_LEN, \
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this_id: -1, \
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sg_tablesize: QLOGICFC_MAX_SG(QLOGICFC_REQ_QUEUE_LEN), \
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cmd_per_lun: QLOGICFC_CMD_PER_LUN, \
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present: 0, \
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unchecked_isa_dma: 0, \
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use_clustering: ENABLE_CLUSTERING, \
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highmem_io: 1 \
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}
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#endif /* _QLOGICFC_H */
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