1 /* $NetBSD: scsivar.h,v 1.1.1.1 1998/06/09 07:53:06 dbj Exp $ */ 2 /* 3 * Copyright (c) 1994 Rolf Grossmann 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Rolf Grossmann. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 struct scsi_softc { 33 char sc_state; /* controller state */ 34 short sc_result; /* result of scsi command */ 35 /* saved interrupt state */ 36 u_char sc_status; /* last 5390 status */ 37 u_char sc_seqstep; /* last 5390 seqstep */ 38 u_char sc_intrstatus; /* last 5390 intrstatus */ 39 u_char sc_dmastatus; /* mass-storage chip status */ 40 41 char *dma_addr; 42 int dma_len; 43 }; 44 45 /* scsi states */ 46 #define SCSI_IDLE 0 47 #define SCSI_SELECTING 1 48 #define SCSI_HASBUS 2 49 #define SCSI_DMA 3 50 #define SCSI_CLEANUP 4 51 #define SCSI_DONE 5 52 53 54 /* scsi phase bits */ 55 #define IOI 1 56 #define CDI 2 57 #define MSGI 4 58 59 /* information transfer phases */ 60 #define DATA_OUT_PHASE (0) 61 #define DATA_IN_PHASE (IOI) 62 #define COMMAND_PHASE (CDI) 63 #define STATUS_PHASE (CDI|IOI) 64 #define MSG_OUT_PHASE (MSGI|CDI) 65 #define MSG_IN_PHASE (MSGI|CDI|IOI) 66 67 /* simple loop timeout */ 68 #define SCSI_TIMEOUT 2000000 69 70 extern struct scsi_softc scsi_softc; 71 72 #define DELAY(n) { register int N = (n); while (--N > 0); } 73