/* * 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 */ /* * $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 */