1 /* 2 * QLogic ISP1020 Intelligent SCSI Processor Driver (PCI) 3 * Written by Erik H. Moe, ehm@cris.com 4 * Copyright 1995, Erik H. Moe 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation; either version 2, or (at your option) any 9 * later version. 10 * 11 * This program is distributed in the hope that it will be useful, but 12 * WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * General Public License for more details. 15 */ 16 17 /* Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu> */ 18 19 /* 20 * $Date: 1995/09/22 02:32:56 $ 21 * $Revision: 0.5 $ 22 * 23 * $Log: isp1020.h,v $ 24 * Revision 0.5 1995/09/22 02:32:56 root 25 * do auto request sense 26 * 27 * Revision 0.4 1995/08/07 04:48:28 root 28 * supply firmware with driver. 29 * numerous bug fixes/general cleanup of code. 30 * 31 * Revision 0.3 1995/07/16 16:17:16 root 32 * added reset/abort code. 33 * 34 * Revision 0.2 1995/06/29 03:19:43 root 35 * fixed biosparam. 36 * added queue protocol. 37 * 38 * Revision 0.1 1995/06/25 01:56:13 root 39 * Initial release. 40 * 41 */ 42 43 #ifndef _QLOGICISP_H 44 #define _QLOGICISP_H 45 46 /* 47 * With the qlogic interface, every queue slot can hold a SCSI 48 * command with up to 4 scatter/gather entries. If we need more 49 * than 4 entries, continuation entries can be used that hold 50 * another 7 entries each. Unlike for other drivers, this means 51 * that the maximum number of scatter/gather entries we can 52 * support at any given time is a function of the number of queue 53 * slots available. That is, host->can_queue and host->sg_tablesize 54 * are dynamic and _not_ independent. This all works fine because 55 * requests are queued serially and the scatter/gather limit is 56 * determined for each queue request anew. 57 */ 58 #define QLOGICISP_REQ_QUEUE_LEN 63 /* must be power of two - 1 */ 59 #define QLOGICISP_MAX_SG(ql) (4 + ((ql) > 0) ? 7*((ql) - 1) : 0) 60 61 int isp1020_detect(Scsi_Host_Template *); 62 int isp1020_release(struct Scsi_Host *); 63 const char * isp1020_info(struct Scsi_Host *); 64 int isp1020_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *)); 65 int isp1020_abort(Scsi_Cmnd *); 66 int isp1020_reset(Scsi_Cmnd *, unsigned int); 67 int isp1020_biosparam(Disk *, kdev_t, int[]); 68 69 #ifndef NULL 70 #define NULL (0) 71 #endif 72 73 #define QLOGICISP { \ 74 detect: isp1020_detect, \ 75 release: isp1020_release, \ 76 info: isp1020_info, \ 77 queuecommand: isp1020_queuecommand, \ 78 abort: isp1020_abort, \ 79 reset: isp1020_reset, \ 80 bios_param: isp1020_biosparam, \ 81 can_queue: QLOGICISP_REQ_QUEUE_LEN, \ 82 this_id: -1, \ 83 sg_tablesize: QLOGICISP_MAX_SG(QLOGICISP_REQ_QUEUE_LEN), \ 84 cmd_per_lun: 1, \ 85 present: 0, \ 86 unchecked_isa_dma: 0, \ 87 use_clustering: DISABLE_CLUSTERING \ 88 } 89 90 #endif /* _QLOGICISP_H */ 91