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/*
* QLogic ISP1020 Intelligent SCSI Processor Driver (PCI)
* 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> */
/*
* $Date: 2007/03/27 21:04:30 $
* $Revision: 1.1.4.2 $
*
* 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 _QLOGICISP_H
#define _QLOGICISP_H
/*
* With the qlogic interface, every queue slot can hold a SCSI
* command with up to 4 scatter/gather entries. If we need more
* than 4 entries, continuation entries can be used that hold
* another 7 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.
*/
#define QLOGICISP_REQ_QUEUE_LEN 63 /* must be power of two - 1 */
#define QLOGICISP_MAX_SG(ql) (4 + ((ql) > 0) ? 7*((ql) - 1) : 0)
int isp1020_detect(Scsi_Host_Template *);
int isp1020_release(struct Scsi_Host *);
const char * isp1020_info(struct Scsi_Host *);
int isp1020_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
int isp1020_abort(Scsi_Cmnd *);
int isp1020_reset(Scsi_Cmnd *, unsigned int);
int isp1020_biosparam(Disk *, kdev_t, int[]);
#ifndef NULL
#define NULL (0)
#endif
static struct proc_dir_entry proc_scsi_isp1020;
#define QLOGICISP { \
/* next */ NULL, \
/* usage_count */ NULL, \
/* proc dir */ NULL, \
/* procfs info */ NULL, \
/* name */ NULL, \
/* detect */ isp1020_detect, \
/* release */ isp1020_release, \
/* info */ isp1020_info, \
/* command */ NULL, \
/* queuecommand */ isp1020_queuecommand, \
/* abort */ isp1020_abort, \
/* reset */ isp1020_reset, \
/* slave_attach */ NULL, \
/* bios_param */ isp1020_biosparam, \
/* can_queue */ QLOGICISP_REQ_QUEUE_LEN, \
/* this_id */ -1, \
/* sg_tablesize */ QLOGICISP_MAX_SG(QLOGICISP_REQ_QUEUE_LEN), \
/* cmd_per_lun */ 1, \
/* present */ 0, \
/* unchecked_isa_dma */ 0, \
/* use_clustering */ DISABLE_CLUSTERING \
}
#endif /* _QLOGICISP_H */
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