2 * QLogic ISP2x00 SCSI-FCP
4 * Written by Erik H. Moe, ehm@cris.com
5 * Copyright 1995, Erik H. Moe
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
18 /* Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu> */
20 /* This is a version of the isp1020 driver which was modified by
21 * Chris Loveland <cwl@iol.unh.edu> to support the isp2x00
26 * $Date: 2005/04/11 02:50:36 $
27 * $Revision: 1.1.1.1 $
29 * $Log: qlogicfc.h,v $
30 * Revision 1.1.1.1 2005/04/11 02:50:36 jack
33 * Revision 1.1.1.1 2005/01/10 13:16:36 jack
36 * Revision 0.5 1995/09/22 02:32:56 root
37 * do auto request sense
39 * Revision 0.4 1995/08/07 04:48:28 root
40 * supply firmware with driver.
41 * numerous bug fixes/general cleanup of code.
43 * Revision 0.3 1995/07/16 16:17:16 root
44 * added reset/abort code.
46 * Revision 0.2 1995/06/29 03:19:43 root
48 * added queue protocol.
50 * Revision 0.1 1995/06/25 01:56:13 root
59 * With the qlogic interface, every queue slot can hold a SCSI
60 * command with up to 2 scatter/gather entries. If we need more
61 * than 2 entries, continuation entries can be used that hold
62 * another 5 entries each. Unlike for other drivers, this means
63 * that the maximum number of scatter/gather entries we can
64 * support at any given time is a function of the number of queue
65 * slots available. That is, host->can_queue and host->sg_tablesize
66 * are dynamic and _not_ independent. This all works fine because
67 * requests are queued serially and the scatter/gather limit is
68 * determined for each queue request anew.
71 #define DATASEGS_PER_COMMAND 2
72 #define DATASEGS_PER_CONT 5
74 #define QLOGICFC_REQ_QUEUE_LEN 127 /* must be power of two - 1 */
75 #define QLOGICFC_MAX_SG(ql) (DATASEGS_PER_COMMAND + (((ql) > 0) ? DATASEGS_PER_CONT*((ql) - 1) : 0))
76 #define QLOGICFC_CMD_PER_LUN 8
78 int isp2x00_detect(Scsi_Host_Template *);
79 int isp2x00_release(struct Scsi_Host *);
80 const char * isp2x00_info(struct Scsi_Host *);
81 int isp2x00_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
82 int isp2x00_abort(Scsi_Cmnd *);
83 int isp2x00_reset(Scsi_Cmnd *, unsigned int);
84 int isp2x00_biosparam(Disk *, kdev_t, int[]);
91 detect: isp2x00_detect, \
92 release: isp2x00_release, \
94 queuecommand: isp2x00_queuecommand, \
95 eh_abort_handler: isp2x00_abort, \
96 reset: isp2x00_reset, \
97 bios_param: isp2x00_biosparam, \
98 can_queue: QLOGICFC_REQ_QUEUE_LEN, \
100 sg_tablesize: QLOGICFC_MAX_SG(QLOGICFC_REQ_QUEUE_LEN), \
101 cmd_per_lun: QLOGICFC_CMD_PER_LUN, \
103 unchecked_isa_dma: 0, \
104 use_clustering: ENABLE_CLUSTERING, \
108 #endif /* _QLOGICFC_H */