1 /* $NetBSD: afsc.c,v 1.26 1999/01/10 13:30:48 tron 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_device afsc_scsidev = { 63 NULL, /* use default error handler */ 64 NULL, /* do not have a start functio */ 65 NULL, /* have no async handler */ 66 NULL, /* Use default done routine */ 67 }; 68 69 70 #ifdef DEBUG 71 #endif 72 73 struct cfattach afsc_ca = { 74 sizeof(struct siop_softc), afscmatch, afscattach 75 }; 76 77 struct cfattach aftsc_ca = { 78 sizeof(struct siop_softc), afscmatch, afscattach 79 }; 80 81 /* 82 * if we are a Commodore Amiga A4091 or possibly an A4000T 83 */ 84 int 85 afscmatch(pdp, cfp, auxp) 86 struct device *pdp; 87 struct cfdata *cfp; 88 void *auxp; 89 { 90 struct zbus_args *zap; 91 siop_regmap_p rp; 92 u_long temp, scratch; 93 94 zap = auxp; 95 if (zap->manid == 514 && zap->prodid == 84) 96 return(1); /* It's an A4091 SCSI card */ 97 if (!is_a4000() || !matchname(auxp, "afsc")) 98 return(0); /* Not on an A4000 or not A4000T SCSI */ 99 rp = ztwomap(0xdd0040); 100 if (badaddr((caddr_t)&rp->siop_scratch) || badaddr((caddr_t)&rp->siop_temp)) { 101 return(0); 102 } 103 scratch = rp->siop_scratch; 104 temp = rp->siop_temp; 105 rp->siop_scratch = 0xdeadbeef; 106 rp->siop_temp = 0xaaaa5555; 107 if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555) 108 return(0); 109 rp->siop_scratch = scratch; 110 rp->siop_temp = temp; 111 if (rp->siop_scratch != scratch || rp->siop_temp != temp) 112 return(0); 113 return(1); 114 } 115 116 void 117 afscattach(pdp, dp, auxp) 118 struct device *pdp, *dp; 119 void *auxp; 120 { 121 struct siop_softc *sc; 122 struct zbus_args *zap; 123 siop_regmap_p rp; 124 125 printf("\n"); 126 127 zap = auxp; 128 129 sc = (struct siop_softc *)dp; 130 if (zap->manid == 514 && zap->prodid == 84) 131 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 132 0x00800000); 133 else 134 sc->sc_siopp = rp = ztwomap(0xdd0040); 135 136 /* 137 * CTEST7 = 80 [disable burst] 138 */ 139 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 140 sc->sc_ctest7 = SIOP_CTEST7_CDIS; 141 sc->sc_dcntl = SIOP_DCNTL_EA; 142 143 sc->sc_adapter.scsipi_cmd = siop_scsicmd; 144 sc->sc_adapter.scsipi_minphys = siop_minphys; 145 146 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 147 sc->sc_link.adapter_softc = sc; 148 sc->sc_link.scsipi_scsi.adapter_target = 7; 149 sc->sc_link.adapter = &sc->sc_adapter; 150 sc->sc_link.device = &afsc_scsidev; 151 sc->sc_link.openings = 2; 152 sc->sc_link.scsipi_scsi.max_target = 7; 153 sc->sc_link.scsipi_scsi.max_lun = 7; 154 sc->sc_link.type = BUS_SCSI; 155 156 siopinitialize(sc); 157 158 sc->sc_isr.isr_intr = afsc_dmaintr; 159 sc->sc_isr.isr_arg = sc; 160 sc->sc_isr.isr_ipl = 2; 161 add_isr (&sc->sc_isr); 162 163 /* 164 * attach all scsi units on us 165 */ 166 config_found(dp, &sc->sc_link, scsiprint); 167 } 168 169 int 170 afsc_dmaintr(arg) 171 void *arg; 172 { 173 struct siop_softc *sc = arg; 174 siop_regmap_p rp; 175 u_char istat; 176 177 if (sc->sc_flags & SIOP_INTSOFF) 178 return (0); /* interrupts are not active */ 179 rp = sc->sc_siopp; 180 istat = rp->siop_istat; 181 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 182 return(0); 183 /* 184 * save interrupt status, DMA status, and SCSI status 0 185 * (may need to deal with stacked interrupts?) 186 */ 187 sc->sc_sstat0 = rp->siop_sstat0; 188 sc->sc_istat = istat; 189 sc->sc_dstat = rp->siop_dstat; 190 siopintr(sc); 191 return(1); 192 } 193 194 #ifdef DEBUG 195 void 196 afsc_dump() 197 { 198 extern struct cfdriver afsc_cd; 199 int i; 200 201 for (i = 0; i < afsc_cd.cd_ndevs; ++i) 202 if (afsc_cd.cd_devs[i]) 203 siop_dump(afsc_cd.cd_devs[i]); 204 } 205 #endif 206