siopvar.h revision 1.6
1 /* $NetBSD: siopvar.h,v 1.6 1994/12/28 09:26:02 chopps Exp $ */ 2 3 /* 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Van Jacobson of Lawrence Berkeley Laboratory. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)siopvar.h 7.1 (Berkeley) 5/8/90 39 */ 40 #ifndef _SIOPVAR_H_ 41 #define _SIOPVAR_H_ 42 43 /* 44 * The largest single request will be MAXPHYS bytes which will require 45 * at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of 46 * the buffer pages are physically contiguous (MAXPHYS/NBPG) and the 47 * buffer is not page aligned (+1). 48 */ 49 #define DMAMAXIO (MAXPHYS/NBPG+1) 50 51 struct siop_pending { 52 TAILQ_ENTRY(siop_pending) link; 53 struct scsi_xfer *xs; 54 }; 55 56 struct siop_ds { /* Data Structure for SCRIPTS */ 57 long scsi_addr; /* SCSI ID & sync */ 58 long idlen; /* Identify message */ 59 char *idbuf; 60 long cmdlen; /* SCSI command */ 61 char *cmdbuf; 62 long stslen; /* Status */ 63 char *stsbuf; 64 long msglen; /* Message */ 65 char *msgbuf; 66 long msginlen; /* Message in */ 67 char *msginbuf; 68 long extmsglen; /* Extended message in */ 69 char *extmsgbuf; 70 long synmsglen; /* Sync transfer request */ 71 char *synmsgbuf; 72 struct { 73 long datalen; 74 char *databuf; 75 } chain[DMAMAXIO]; 76 }; 77 78 struct siop_softc { 79 struct device sc_dev; 80 81 u_char sc_istat; 82 u_char sc_dstat; 83 u_char sc_sstat0; 84 u_char sc_sstat1; 85 struct scsi_link sc_link; /* proto for sub devices */ 86 siop_regmap_p sc_siopp; /* the SIOP */ 87 volatile void *sc_cregs; /* driver specific regs */ 88 struct scsi_xfer *sc_xs; /* transfer from high level code */ 89 u_long sc_active; /* number of active I/O's */ 90 /* I/O blocks for each active I/O */ 91 struct siop_iob { 92 struct scsi_xfer *sc_xs; 93 struct siop_ds sc_ds; 94 void *iob_buf; 95 u_long iob_curbuf; 96 u_long iob_len, iob_curlen; 97 u_char sc_msgout[6]; 98 u_char sc_msg[6]; 99 u_char sc_stat[1]; 100 u_char sc_status; 101 u_char sc_dummy[2]; 102 } *sc_cur; /* current I/O block */ 103 struct siop_iob sc_iob[2]; /* I/O blocks */ 104 u_long sc_scriptspa; /* physical address of scripts */ 105 u_long sc_clock_freq; 106 u_char sc_flags; 107 u_char sc_slave; 108 /* one for each target */ 109 struct syncpar { 110 u_char state; 111 u_char period, offset; 112 } sc_sync[8]; 113 TAILQ_HEAD(,siop_pending) sc_xslist; /* LIFO */ 114 struct siop_pending sc_xsstore[8][8]; /* one for every unit */ 115 }; 116 117 /* sc_flags */ 118 #define SIOP_DMA 0x80 /* DMA I/O in progress */ 119 #define SIOP_ALIVE 0x01 /* controller initialized */ 120 #define SIOP_SELECTED 0x04 /* bus is in selected state. Needed for 121 correct abort procedure. */ 122 123 /* sync states */ 124 #define SYNC_START 0 /* no sync handshake started */ 125 #define SYNC_SENT 1 /* we sent sync request, no answer yet */ 126 #define SYNC_DONE 2 /* target accepted our (or inferior) settings, 127 or it rejected the request and we stay async */ 128 129 #define MSG_CMD_COMPLETE 0x00 130 #define MSG_EXT_MESSAGE 0x01 131 #define MSG_SAVE_DATA_PTR 0x02 132 #define MSG_RESTORE_PTR 0x03 133 #define MSG_DISCONNECT 0x04 134 #define MSG_INIT_DETECT_ERROR 0x05 135 #define MSG_ABORT 0x06 136 #define MSG_REJECT 0x07 137 #define MSG_NOOP 0x08 138 #define MSG_PARITY_ERROR 0x09 139 #define MSG_BUS_DEVICE_RESET 0x0C 140 #define MSG_IDENTIFY 0x80 141 #define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */ 142 #define MSG_SYNC_REQ 0x01 143 144 #define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */ 145 #define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */ 146 #define STS_BUSY 0x08 147 #define STS_INTERMED 0x10 /* Intermediate status sent */ 148 #define STS_EXT 0x80 /* Extended status valid */ 149 150 void siop_minphys __P((struct buf *bp)); 151 u_int siop_adinfo __P((void)); 152 int siop_scsicmd __P((struct scsi_xfer *)); 153 154 #endif /* _SIOPVAR_H */ 155
Indexes created Sun Sep 28 16:09:52 GMT 2025