1 /* $NetBSD: afsc.c,v 1.21 1997/08/27 11:23:02 bouyer 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 <dev/scsipi/scsi_all.h> 44 #include <dev/scsipi/scsipi_all.h> 45 #include <dev/scsipi/scsiconf.h> 46 #include <machine/cpu.h> 47 #include <amiga/amiga/custom.h> 48 #include <amiga/amiga/cc.h> 49 #include <amiga/amiga/device.h> 50 #include <amiga/amiga/isr.h> 51 #include <amiga/dev/siopreg.h> 52 #include <amiga/dev/siopvar.h> 53 #include <amiga/dev/zbusvar.h> 54 55 void afscattach __P((struct device *, struct device *, void *)); 56 int afscmatch __P((struct device *, struct cfdata *, void *)); 57 int afsc_dmaintr __P((void *)); 58 #ifdef DEBUG 59 void afsc_dump __P((void)); 60 #endif 61 62 struct scsipi_adapter afsc_scsiswitch = { 63 siop_scsicmd, 64 siop_minphys, 65 0, /* no lun support */ 66 0, /* no lun support */ 67 }; 68 69 struct scsipi_device afsc_scsidev = { 70 NULL, /* use default error handler */ 71 NULL, /* do not have a start functio */ 72 NULL, /* have no async handler */ 73 NULL, /* Use default done routine */ 74 }; 75 76 77 #ifdef DEBUG 78 #endif 79 80 struct cfattach afsc_ca = { 81 sizeof(struct siop_softc), afscmatch, afscattach 82 }; 83 84 struct cfdriver afsc_cd = { 85 NULL, "afsc", DV_DULL, NULL, 0 86 }; 87 88 struct cfattach aftsc_ca = { 89 sizeof(struct siop_softc), afscmatch, afscattach 90 }; 91 92 struct cfdriver aftsc_cd = { 93 NULL, "aftsc", DV_DULL, NULL, 0 94 }; 95 96 /* 97 * if we are a Commodore Amiga A4091 or possibly an A4000T 98 */ 99 int 100 afscmatch(pdp, cfp, auxp) 101 struct device *pdp; 102 struct cfdata *cfp; 103 void *auxp; 104 { 105 struct zbus_args *zap; 106 siop_regmap_p rp; 107 u_long temp, scratch; 108 109 zap = auxp; 110 if (zap->manid == 514 && zap->prodid == 84) 111 return(1); /* It's an A4091 SCSI card */ 112 if (!is_a4000() || !matchname(auxp, "afsc")) 113 return(0); /* Not on an A4000 or not A4000T SCSI */ 114 rp = ztwomap(0xdd0040); 115 if (badaddr((caddr_t)&rp->siop_scratch) || badaddr((caddr_t)&rp->siop_temp)) { 116 return(0); 117 } 118 scratch = rp->siop_scratch; 119 temp = rp->siop_temp; 120 rp->siop_scratch = 0xdeadbeef; 121 rp->siop_temp = 0xaaaa5555; 122 if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555) 123 return(0); 124 rp->siop_scratch = scratch; 125 rp->siop_temp = temp; 126 if (rp->siop_scratch != scratch || rp->siop_temp != temp) 127 return(0); 128 return(1); 129 } 130 131 void 132 afscattach(pdp, dp, auxp) 133 struct device *pdp, *dp; 134 void *auxp; 135 { 136 struct siop_softc *sc; 137 struct zbus_args *zap; 138 siop_regmap_p rp; 139 140 printf("\n"); 141 142 zap = auxp; 143 144 sc = (struct siop_softc *)dp; 145 if (zap->manid == 514 && zap->prodid == 84) 146 sc->sc_siopp = rp = zap->va + 0x00800000; 147 else 148 sc->sc_siopp = rp = ztwomap(0xdd0040); 149 150 /* 151 * CTEST7 = 80 [disable burst] 152 */ 153 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 154 sc->sc_ctest7 = SIOP_CTEST7_CDIS; 155 sc->sc_dcntl = SIOP_DCNTL_EA; 156 157 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 158 sc->sc_link.adapter_softc = sc; 159 sc->sc_link.scsipi_scsi.adapter_target = 7; 160 sc->sc_link.adapter = &afsc_scsiswitch; 161 sc->sc_link.device = &afsc_scsidev; 162 sc->sc_link.openings = 2; 163 sc->sc_link.scsipi_scsi.max_target = 7; 164 sc->sc_link.type = BUS_SCSI; 165 166 siopinitialize(sc); 167 168 sc->sc_isr.isr_intr = afsc_dmaintr; 169 sc->sc_isr.isr_arg = sc; 170 sc->sc_isr.isr_ipl = 2; 171 add_isr (&sc->sc_isr); 172 173 /* 174 * attach all scsi units on us 175 */ 176 config_found(dp, &sc->sc_link, scsiprint); 177 } 178 179 int 180 afsc_dmaintr(arg) 181 void *arg; 182 { 183 struct siop_softc *sc = arg; 184 siop_regmap_p rp; 185 u_char istat; 186 187 if (sc->sc_flags & SIOP_INTSOFF) 188 return (0); /* interrupts are not active */ 189 rp = sc->sc_siopp; 190 istat = rp->siop_istat; 191 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 192 return(0); 193 /* 194 * save interrupt status, DMA status, and SCSI status 0 195 * (may need to deal with stacked interrupts?) 196 */ 197 sc->sc_sstat0 = rp->siop_sstat0; 198 sc->sc_istat = istat; 199 sc->sc_dstat = rp->siop_dstat; 200 siopintr(sc); 201 return(1); 202 } 203 204 #ifdef DEBUG 205 void 206 afsc_dump() 207 { 208 int i; 209 210 for (i = 0; i < afsc_cd.cd_ndevs; ++i) 211 if (afsc_cd.cd_devs[i]) 212 siop_dump(afsc_cd.cd_devs[i]); 213 } 214 #endif 215