siopvar.h revision 1.21
1 /* $NetBSD: siopvar.h,v 1.21 2002/05/14 00:08:22 matt 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 struct scsi_generic cmd; /* SCSI command block */ 92 struct siop_ds ds; 93 void *iob_buf; 94 u_long iob_curbuf; 95 u_long iob_len, iob_curlen; 96 u_char msgout[6]; 97 u_char msg[6]; 98 u_char stat[1]; 99 u_char status; 100 u_char dummy[2]; 101 int clen; 102 char *daddr; /* Saved data pointer */ 103 int dleft; /* Residue */ 104 }; 105 106 /* 107 * Some info about each (possible) target on the SCSI bus. This should 108 * probably have been a "per target+lunit" structure, but we'll leave it at 109 * this for now. Is there a way to reliably hook it up to sc->fordriver?? 110 */ 111 struct siop_tinfo { 112 int cmds; /* #commands processed */ 113 int dconns; /* #disconnects */ 114 int touts; /* #timeouts */ 115 int perrs; /* #parity errors */ 116 ushort lubusy; /* What local units/subr. are busy? */ 117 u_char flags; 118 u_char period; /* Period suggestion */ 119 u_char offset; /* Offset suggestion */ 120 }; 121 122 struct siop_softc { 123 struct device sc_dev; 124 struct isr sc_isr; 125 126 u_char sc_istat; 127 u_char sc_dstat; 128 #ifndef ARCH_720 129 u_char sc_sstat0; 130 #endif 131 u_char sc_sstat1; 132 #ifdef ARCH_720 133 u_short sc_sist; 134 #endif 135 u_long sc_intcode; 136 struct scsipi_adapter sc_adapter; 137 struct scsipi_channel sc_channel; 138 u_long sc_scriptspa; /* physical address of scripts */ 139 siop_regmap_p sc_siopp; /* the SIOP */ 140 u_long sc_active; /* number of active I/O's */ 141 142 /* Lists of command blocks */ 143 TAILQ_HEAD(acb_list, siop_acb) free_list, 144 ready_list, 145 nexus_list; 146 147 struct siop_acb *sc_nexus; /* current command */ 148 #define SIOP_NACB 16 149 struct siop_acb *sc_acb; /* the real command blocks */ 150 #ifndef ARCH_720 151 struct siop_tinfo sc_tinfo[8]; 152 #else 153 struct siop_tinfo sc_tinfo[16]; 154 #endif 155 156 u_short sc_clock_freq; 157 u_char sc_dcntl; 158 u_char sc_ctest7; 159 u_short sc_tcp[4]; 160 u_char sc_flags; 161 u_char sc_dien; 162 u_char sc_minsync; 163 #ifndef ARCH_720 164 u_char sc_sien; 165 #else 166 u_short sc_sien; 167 #endif 168 /* one for each target */ 169 struct syncpar { 170 u_char state; 171 u_char sxfer; 172 #ifndef ARCH_720 173 u_char sbcl; 174 #else 175 u_char scntl3; 176 #endif 177 } sc_sync[16]; 178 }; 179 180 /* sc_flags */ 181 #define SIOP_INTSOFF 0x80 /* Interrupts turned off */ 182 #define SIOP_INTDEFER 0x40 /* Level 6 interrupt has been deferred */ 183 #define SIOP_ALIVE 0x01 /* controller initialized */ 184 #define SIOP_SELECTED 0x04 /* bus is in selected state. Needed for 185 correct abort procedure. */ 186 187 /* negotiation states */ 188 #define NEG_WIDE 0 /* Negotiate wide transfers */ 189 #define NEG_WAITW 1 /* Waiting for wide negotation response */ 190 #define NEG_SYNC 2 /* Negotiate synch transfers */ 191 #define NEG_WAITS 3 /* Waiting for synch negoation response */ 192 #define NEG_DONE 4 /* Wide and/or sync negotation done */ 193 194 #define MSG_CMD_COMPLETE 0x00 195 #define MSG_EXT_MESSAGE 0x01 196 #define MSG_SAVE_DATA_PTR 0x02 197 #define MSG_RESTORE_PTR 0x03 198 #define MSG_DISCONNECT 0x04 199 #define MSG_INIT_DETECT_ERROR 0x05 200 #define MSG_ABORT 0x06 201 #define MSG_REJECT 0x07 202 #define MSG_NOOP 0x08 203 #define MSG_PARITY_ERROR 0x09 204 #define MSG_BUS_DEVICE_RESET 0x0C 205 #define MSG_IDENTIFY 0x80 206 #define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */ 207 #define MSG_SYNC_REQ 0x01 208 #define MSG_WIDE_REQ 0x03 209 210 #define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */ 211 #define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */ 212 #define STS_BUSY 0x08 213 #define STS_INTERMED 0x10 /* Intermediate status sent */ 214 #define STS_EXT 0x80 /* Extended status valid */ 215 216 #ifdef ARCH_720 217 void siopng_minphys(struct buf *bp); 218 void siopng_scsipi_request(struct scsipi_channel *, 219 scsipi_adapter_req_t, void *); 220 void siopnginitialize(struct siop_softc *); 221 void siopngintr(struct siop_softc *); 222 void siopng_dump_registers(struct siop_softc *); 223 #ifdef DEBUG 224 void siopng_dump(struct siop_softc *); 225 #endif 226 227 #else 228 229 void siop_minphys(struct buf *bp); 230 void siop_scsipi_request(struct scsipi_channel *, 231 scsipi_adapter_req_t, void *); 232 void siopinitialize(struct siop_softc *); 233 void siopintr(struct siop_softc *); 234 void siop_dump_registers(struct siop_softc *); 235 #ifdef DEBUG 236 void siop_dump(struct siop_softc *); 237 #endif 238 #endif 239 240 #endif /* _SIOPVAR_H */ 241
Indexes created Sat Sep 27 14:09:57 GMT 2025