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/*
* QLogic ISP2x00 SCSI-FCP
*
* Written by Erik H. Moe, ehm@cris.com
* Copyright 1995, Erik H. Moe
*
* 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, 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.
*/
/* Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu> */
/* This is a version of the isp1020 driver which was modified by
* Chris Loveland <cwl@iol.unh.edu> to support the isp2x00
*/
/*
* $Date: 1995/09/22 02:32:56 $
* $Revision: 0.5 $
*
* $Log: isp1020.h,v $
* Revision 0.5 1995/09/22 02:32:56 root
* do auto request sense
*
* Revision 0.4 1995/08/07 04:48:28 root
* supply firmware with driver.
* numerous bug fixes/general cleanup of code.
*
* Revision 0.3 1995/07/16 16:17:16 root
* added reset/abort code.
*
* Revision 0.2 1995/06/29 03:19:43 root
* fixed biosparam.
* added queue protocol.
*
* Revision 0.1 1995/06/25 01:56:13 root
* Initial release.
*
*/
#ifndef _QLOGICFC_H
#define _QLOGICFC_H
/*
* With the qlogic interface, every queue slot can hold a SCSI
* command with up to 2 scatter/gather entries. If we need more
* than 2 entries, continuation entries can be used that hold
* another 5 entries each. Unlike for other drivers, this means
* that the maximum number of scatter/gather entries we can
* support at any given time is a function of the number of queue
* slots available. That is, host->can_queue and host->sg_tablesize
* are dynamic and _not_ independent. This all works fine because
* requests are queued serially and the scatter/gather limit is
* determined for each queue request anew.
*/
#if BITS_PER_LONG > 32
#define DATASEGS_PER_COMMAND 2
#define DATASEGS_PER_CONT 5
#else
#define DATASEGS_PER_COMMAND 3
#define DATASEGS_PER_CONT 7
#endif
#define QLOGICFC_REQ_QUEUE_LEN 127 /* must be power of two - 1 */
#define QLOGICFC_MAX_SG(ql) (DATASEGS_PER_COMMAND + (((ql) > 0) ? DATASEGS_PER_CONT*((ql) - 1) : 0))
#define QLOGICFC_CMD_PER_LUN 8
int isp2x00_detect(Scsi_Host_Template *);
int isp2x00_release(struct Scsi_Host *);
const char * isp2x00_info(struct Scsi_Host *);
int isp2x00_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
int isp2x00_abort(Scsi_Cmnd *);
int isp2x00_reset(Scsi_Cmnd *, unsigned int);
int isp2x00_biosparam(Disk *, kdev_t, int[]);
#ifndef NULL
#define NULL (0)
#endif
extern struct proc_dir_entry proc_scsi_isp2x00;
#define QLOGICFC { \
detect: isp2x00_detect, \
release: isp2x00_release, \
info: isp2x00_info, \
queuecommand: isp2x00_queuecommand, \
eh_abort_handler: isp2x00_abort, \
reset: isp2x00_reset, \
bios_param: isp2x00_biosparam, \
can_queue: QLOGICFC_REQ_QUEUE_LEN, \
this_id: -1, \
sg_tablesize: QLOGICFC_MAX_SG(QLOGICFC_REQ_QUEUE_LEN), \
cmd_per_lun: QLOGICFC_CMD_PER_LUN, \
present: 0, \
unchecked_isa_dma: 0, \
use_clustering: ENABLE_CLUSTERING \
}
#endif /* _QLOGICFC_H */
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