siopvar.h revision 1.18.8.1
1 /* $NetBSD: siopvar.h,v 1.18.8.1 2000/11/20 19:58:44 bouyer 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 /* 52 * Data Structure for SCRIPTS program 53 */ 54 struct siop_ds { 55 long scsi_addr; /* SCSI ID & sync */ 56 long idlen; /* Identify message */ 57 char *idbuf; 58 long cmdlen; /* SCSI command */ 59 char *cmdbuf; 60 long stslen; /* Status */ 61 char *stsbuf; 62 long msglen; /* Message */ 63 char *msgbuf; 64 long msginlen; /* Message in */ 65 char *msginbuf; 66 long extmsglen; /* Extended message in */ 67 char *extmsgbuf; 68 long synmsglen; /* Sync transfer request */ 69 char *synmsgbuf; 70 struct { 71 long datalen; 72 char *databuf; 73 } chain[DMAMAXIO]; 74 }; 75 76 /* 77 * ACB. Holds additional information for each SCSI command Comments: We 78 * need a separate scsi command block because we may need to overwrite it 79 * with a request sense command. Basicly, we refrain from fiddling with 80 * the scsi_xfer struct (except do the expected updating of return values). 81 * We'll generally update: xs->{flags,resid,error,sense,status} and 82 * occasionally xs->retries. 83 */ 84 struct siop_acb { 85 TAILQ_ENTRY(siop_acb) chain; 86 struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */ 87 int flags; /* Status */ 88 #define ACB_FREE 0x00 89 #define ACB_ACTIVE 0x01 90 #define ACB_DONE 0x04 91 #define ACB_CHKSENSE 0x08 92 struct scsi_generic cmd; /* SCSI command block */ 93 struct siop_ds ds; 94 void *iob_buf; 95 u_long iob_curbuf; 96 u_long iob_len, iob_curlen; 97 u_char msgout[6]; 98 u_char msg[6]; 99 u_char stat[1]; 100 u_char status; 101 u_char dummy[2]; 102 int clen; 103 char *daddr; /* Saved data pointer */ 104 int dleft; /* Residue */ 105 }; 106 107 /* 108 * Some info about each (possible) target on the SCSI bus. This should 109 * probably have been a "per target+lunit" structure, but we'll leave it at 110 * this for now. Is there a way to reliably hook it up to sc->fordriver?? 111 */ 112 struct siop_tinfo { 113 int cmds; /* #commands processed */ 114 int dconns; /* #disconnects */ 115 int touts; /* #timeouts */ 116 int perrs; /* #parity errors */ 117 int senses; /* #request sense commands sent */ 118 ushort lubusy; /* What local units/subr. are busy? */ 119 u_char flags; 120 u_char period; /* Period suggestion */ 121 u_char offset; /* Offset suggestion */ 122 } tinfo_t; 123 124 struct siop_softc { 125 struct device sc_dev; 126 struct isr sc_isr; 127 128 u_char sc_istat; 129 u_char sc_dstat; 130 #ifndef ARCH_720 131 u_char sc_sstat0; 132 #endif 133 u_char sc_sstat1; 134 #ifdef ARCH_720 135 u_short sc_sist; 136 #endif 137 u_long sc_intcode; 138 struct scsipi_adapter sc_adapter; 139 struct scsipi_channel sc_channel; 140 u_long sc_scriptspa; /* physical address of scripts */ 141 siop_regmap_p sc_siopp; /* the SIOP */ 142 u_long sc_active; /* number of active I/O's */ 143 144 /* Lists of command blocks */ 145 TAILQ_HEAD(acb_list, siop_acb) free_list, 146 ready_list, 147 nexus_list; 148 149 struct siop_acb *sc_nexus; /* current command */ 150 #define SIOP_NACB 16 151 struct siop_acb *sc_acb; /* the real command blocks */ 152 #ifndef ARCH_720 153 struct siop_tinfo sc_tinfo[8]; 154 #else 155 struct siop_tinfo sc_tinfo[16]; 156 #endif 157 158 u_short sc_clock_freq; 159 u_char sc_dcntl; 160 u_char sc_ctest7; 161 u_short sc_tcp[4]; 162 u_char sc_flags; 163 u_char sc_dien; 164 u_char sc_minsync; 165 #ifndef ARCH_720 166 u_char sc_sien; 167 #else 168 u_short sc_sien; 169 #endif 170 /* one for each target */ 171 struct syncpar { 172 u_char state; 173 u_char sxfer; 174 #ifndef ARCH_720 175 u_char sbcl; 176 #else 177 u_char scntl3; 178 #endif 179 } sc_sync[16]; 180 }; 181 182 /* sc_flags */ 183 #define SIOP_INTSOFF 0x80 /* Interrupts turned off */ 184 #define SIOP_INTDEFER 0x40 /* Level 6 interrupt has been deferred */ 185 #define SIOP_ALIVE 0x01 /* controller initialized */ 186 #define SIOP_SELECTED 0x04 /* bus is in selected state. Needed for 187 correct abort procedure. */ 188 189 /* negotiation states */ 190 #define NEG_WIDE 0 /* Negotiate wide transfers */ 191 #define NEG_WAITW 1 /* Waiting for wide negotation response */ 192 #define NEG_SYNC 2 /* Negotiate synch transfers */ 193 #define NEG_WAITS 3 /* Waiting for synch negoation response */ 194 #define NEG_DONE 4 /* Wide and/or sync negotation done */ 195 196 #define MSG_CMD_COMPLETE 0x00 197 #define MSG_EXT_MESSAGE 0x01 198 #define MSG_SAVE_DATA_PTR 0x02 199 #define MSG_RESTORE_PTR 0x03 200 #define MSG_DISCONNECT 0x04 201 #define MSG_INIT_DETECT_ERROR 0x05 202 #define MSG_ABORT 0x06 203 #define MSG_REJECT 0x07 204 #define MSG_NOOP 0x08 205 #define MSG_PARITY_ERROR 0x09 206 #define MSG_BUS_DEVICE_RESET 0x0C 207 #define MSG_IDENTIFY 0x80 208 #define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */ 209 #define MSG_SYNC_REQ 0x01 210 #define MSG_WIDE_REQ 0x03 211 212 #define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */ 213 #define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */ 214 #define STS_BUSY 0x08 215 #define STS_INTERMED 0x10 /* Intermediate status sent */ 216 #define STS_EXT 0x80 /* Extended status valid */ 217 218 #ifdef ARCH_720 219 void siopng_minphys __P((struct buf *bp)); 220 void siopng_scsipi_request __P((struct scsipi_channel *, 221 scsipi_adapter_req_t, void *)); 222 void siopnginitialize __P((struct siop_softc *)); 223 void siopngintr __P((struct siop_softc *)); 224 void siopng_dump_registers __P((struct siop_softc *)); 225 #ifdef DEBUG 226 void siopng_dump __P((struct siop_softc *)); 227 #endif 228 229 #else 230 231 void siop_minphys __P((struct buf *bp)); 232 void siop_scsipi_request __P((struct scsipi_channel *, 233 scsipi_adapter_req_t, void *)); 234 void siopinitialize __P((struct siop_softc *)); 235 void siopintr __P((struct siop_softc *)); 236 void siop_dump_registers __P((struct siop_softc *)); 237 #ifdef DEBUG 238 void siop_dump __P((struct siop_softc *)); 239 #endif 240 #endif 241 242 #endif /* _SIOPVAR_H */ 243
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