afsc.c revision 1.9
1 /* $NetBSD: afsc.c,v 1.9 1995/10/05 12:41:09 chopps Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Michael L. Hitch 5 * Copyright (c) 1982, 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)dma.c 37 */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <scsi/scsi_all.h> 44 #include <scsi/scsiconf.h> 45 #include <amiga/amiga/custom.h> 46 #include <amiga/amiga/cc.h> 47 #include <amiga/amiga/device.h> 48 #include <amiga/amiga/isr.h> 49 #include <amiga/dev/siopreg.h> 50 #include <amiga/dev/siopvar.h> 51 #include <amiga/dev/zbusvar.h> 52 53 int afscprint __P((void *auxp, char *)); 54 void afscattach __P((struct device *, struct device *, void *)); 55 int afscmatch __P((struct device *, struct cfdata *, void *)); 56 int siopintr __P((struct siop_softc *)); 57 int afsc_dmaintr __P((struct siop_softc *)); 58 59 struct scsi_adapter afsc_scsiswitch = { 60 siop_scsicmd, 61 siop_minphys, 62 0, /* no lun support */ 63 0, /* no lun support */ 64 }; 65 66 struct scsi_device afsc_scsidev = { 67 NULL, /* use default error handler */ 68 NULL, /* do not have a start functio */ 69 NULL, /* have no async handler */ 70 NULL, /* Use default done routine */ 71 }; 72 73 74 #ifdef DEBUG 75 #endif 76 77 struct cfdriver afsccd = { 78 NULL, "afsc", (cfmatch_t)afscmatch, afscattach, 79 DV_DULL, sizeof(struct siop_softc), NULL, 0 }; 80 struct cfdriver aftsccd = { 81 NULL, "afsc", (cfmatch_t)afscmatch, afscattach, 82 DV_DULL, sizeof(struct siop_softc), NULL, 0 }; 83 84 /* 85 * if we are a Commodore Amiga A4091 or possibly an A4000T 86 */ 87 int 88 afscmatch(pdp, cdp, auxp) 89 struct device *pdp; 90 struct cfdata *cdp; 91 void *auxp; 92 { 93 struct zbus_args *zap; 94 siop_regmap_p rp; 95 u_long temp, scratch; 96 97 zap = auxp; 98 if (zap->manid == 514 && zap->prodid == 84) 99 return(1); /* It's an A4091 SCSI card */ 100 if (!is_a4000() || !matchname(auxp, "afsc")) 101 return(0); /* Not on an A4000 or not A4000T SCSI */ 102 #ifdef DEBUG 103 printf("afscmatch: probing for A4000T\n"); 104 #endif 105 rp = ztwomap(0xdd0040); 106 if (badaddr(&rp->siop_scratch) || badaddr(&rp->siop_temp)) { 107 #ifdef DEBUG 108 printf("afscmatch: A4000T probed bad address\n"); 109 #endif 110 return(0); 111 } 112 scratch = rp->siop_scratch; 113 temp = rp->siop_temp; 114 rp->siop_scratch = 0xdeadbeef; 115 rp->siop_temp = 0xaaaa5555; 116 #ifdef DEBUG 117 printf("afscmatch: probe %x %x %x %X\n", scratch, temp, 118 rp->siop_scratch, rp->siop_temp); 119 #endif 120 if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555) 121 return(0); 122 rp->siop_scratch = scratch; 123 rp->siop_temp = temp; 124 if (rp->siop_scratch != scratch || rp->siop_temp != temp) 125 return(0); 126 return(1); 127 } 128 129 void 130 afscattach(pdp, dp, auxp) 131 struct device *pdp, *dp; 132 void *auxp; 133 { 134 struct siop_softc *sc; 135 struct zbus_args *zap; 136 siop_regmap_p rp; 137 138 printf("\n"); 139 140 zap = auxp; 141 142 sc = (struct siop_softc *)dp; 143 if (zap->manid == 514 && zap->prodid == 84) 144 sc->sc_siopp = rp = zap->va + 0x00800000; 145 else 146 sc->sc_siopp = rp = ztwomap(0xdd0040); 147 148 /* 149 * CTEST7 = 80 [disable burst] 150 */ 151 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 152 sc->sc_ctest7 = 0x80; /* CDIS */ 153 154 sc->sc_link.adapter_softc = sc; 155 sc->sc_link.adapter_target = 7; 156 sc->sc_link.adapter = &afsc_scsiswitch; 157 sc->sc_link.device = &afsc_scsidev; 158 sc->sc_link.openings = 2; 159 160 siopinitialize(sc); 161 162 sc->sc_isr.isr_intr = afsc_dmaintr; 163 sc->sc_isr.isr_arg = sc; 164 sc->sc_isr.isr_ipl = 2; 165 add_isr (&sc->sc_isr); 166 167 /* 168 * attach all scsi units on us 169 */ 170 config_found(dp, &sc->sc_link, afscprint); 171 } 172 173 /* 174 * print diag if pnp is NULL else just extra 175 */ 176 int 177 afscprint(auxp, pnp) 178 void *auxp; 179 char *pnp; 180 { 181 if (pnp == NULL) 182 return(UNCONF); 183 return(QUIET); 184 } 185 186 int 187 afsc_dmaintr(sc) 188 struct siop_softc *sc; 189 { 190 siop_regmap_p rp; 191 u_char istat; 192 193 if (sc->sc_flags & SIOP_INTSOFF) 194 return (0); /* interrupts are not active */ 195 rp = sc->sc_siopp; 196 istat = rp->siop_istat; 197 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 198 return(0); 199 /* 200 * save interrupt status, DMA status, and SCSI status 0 201 * (may need to deal with stacked interrupts?) 202 */ 203 sc->sc_sstat0 = rp->siop_sstat0; 204 sc->sc_istat = istat; 205 sc->sc_dstat = rp->siop_dstat; 206 siopintr(sc); 207 return(1); 208 } 209 210 #ifdef DEBUG 211 void 212 afsc_dump() 213 { 214 int i; 215 216 for (i = 0; i < afsccd.cd_ndevs; ++i) 217 if (afsccd.cd_devs[i]) 218 siop_dump(afsccd.cd_devs[i]); 219 } 220 #endif 221
Indexes created Wed Sep 24 05:09:52 GMT 2025