1 /* $NetBSD: afsc.c,v 1.27 2001/04/25 17:53:06 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 63 #ifdef DEBUG 64 #endif 65 66 struct cfattach afsc_ca = { 67 sizeof(struct siop_softc), afscmatch, afscattach 68 }; 69 70 struct cfattach aftsc_ca = { 71 sizeof(struct siop_softc), afscmatch, afscattach 72 }; 73 74 /* 75 * if we are a Commodore Amiga A4091 or possibly an A4000T 76 */ 77 int 78 afscmatch(pdp, cfp, auxp) 79 struct device *pdp; 80 struct cfdata *cfp; 81 void *auxp; 82 { 83 struct zbus_args *zap; 84 siop_regmap_p rp; 85 u_long temp, scratch; 86 87 zap = auxp; 88 if (zap->manid == 514 && zap->prodid == 84) 89 return(1); /* It's an A4091 SCSI card */ 90 if (!is_a4000() || !matchname(auxp, "afsc")) 91 return(0); /* Not on an A4000 or not A4000T SCSI */ 92 rp = ztwomap(0xdd0040); 93 if (badaddr((caddr_t)&rp->siop_scratch) || badaddr((caddr_t)&rp->siop_temp)) { 94 return(0); 95 } 96 scratch = rp->siop_scratch; 97 temp = rp->siop_temp; 98 rp->siop_scratch = 0xdeadbeef; 99 rp->siop_temp = 0xaaaa5555; 100 if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555) 101 return(0); 102 rp->siop_scratch = scratch; 103 rp->siop_temp = temp; 104 if (rp->siop_scratch != scratch || rp->siop_temp != temp) 105 return(0); 106 return(1); 107 } 108 109 void 110 afscattach(pdp, dp, auxp) 111 struct device *pdp, *dp; 112 void *auxp; 113 { 114 struct siop_softc *sc = (struct siop_softc *)dp; 115 struct zbus_args *zap; 116 siop_regmap_p rp; 117 struct scsipi_adapter *adapt = &sc->sc_adapter; 118 struct scsipi_channel *chan = &sc->sc_channel; 119 120 printf("\n"); 121 122 zap = auxp; 123 124 if (zap->manid == 514 && zap->prodid == 84) 125 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 126 0x00800000); 127 else 128 sc->sc_siopp = rp = ztwomap(0xdd0040); 129 130 /* 131 * CTEST7 = 80 [disable burst] 132 */ 133 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 134 sc->sc_ctest7 = SIOP_CTEST7_CDIS; 135 sc->sc_dcntl = SIOP_DCNTL_EA; 136 137 /* 138 * Fill in the scsipi_adapter. 139 */ 140 memset(adapt, 0, sizeof(*adapt)); 141 adapt->adapt_dev = &sc->sc_dev; 142 adapt->adapt_nchannels = 1; 143 adapt->adapt_openings = 7; 144 adapt->adapt_max_periph = 1; 145 adapt->adapt_request = siop_scsipi_request; 146 adapt->adapt_minphys = siop_minphys; 147 148 /* 149 * Fill in the scsipi_channel. 150 */ 151 memset(chan, 0, sizeof(*chan)); 152 chan->chan_adapter = adapt; 153 chan->chan_bustype = &scsi_bustype; 154 chan->chan_channel = 0; 155 chan->chan_ntargets = 8; 156 chan->chan_nluns = 8; 157 chan->chan_id = 7; 158 159 siopinitialize(sc); 160 161 sc->sc_isr.isr_intr = afsc_dmaintr; 162 sc->sc_isr.isr_arg = sc; 163 sc->sc_isr.isr_ipl = 2; 164 add_isr (&sc->sc_isr); 165 166 /* 167 * attach all scsi units on us 168 */ 169 config_found(dp, chan, scsiprint); 170 } 171 172 int 173 afsc_dmaintr(arg) 174 void *arg; 175 { 176 struct siop_softc *sc = arg; 177 siop_regmap_p rp; 178 u_char istat; 179 180 if (sc->sc_flags & SIOP_INTSOFF) 181 return (0); /* interrupts are not active */ 182 rp = sc->sc_siopp; 183 istat = rp->siop_istat; 184 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 185 return(0); 186 /* 187 * save interrupt status, DMA status, and SCSI status 0 188 * (may need to deal with stacked interrupts?) 189 */ 190 sc->sc_sstat0 = rp->siop_sstat0; 191 sc->sc_istat = istat; 192 sc->sc_dstat = rp->siop_dstat; 193 siopintr(sc); 194 return(1); 195 } 196 197 #ifdef DEBUG 198 void 199 afsc_dump() 200 { 201 extern struct cfdriver afsc_cd; 202 int i; 203 204 for (i = 0; i < afsc_cd.cd_ndevs; ++i) 205 if (afsc_cd.cd_devs[i]) 206 siop_dump(afsc_cd.cd_devs[i]); 207 } 208 #endif 209