1 /* $NetBSD: afsc.c,v 1.42 2008/06/13 08:13:37 cegger Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)dma.c 32 */ 33 34 /* 35 * Copyright (c) 1994 Michael L. Hitch 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 * 57 * @(#)dma.c 58 */ 59 60 #include <sys/cdefs.h> 61 __KERNEL_RCSID(0, "$NetBSD: afsc.c,v 1.42 2008/06/13 08:13:37 cegger Exp $"); 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/device.h> 67 68 #include <uvm/uvm_extern.h> 69 70 #include <dev/scsipi/scsi_all.h> 71 #include <dev/scsipi/scsipi_all.h> 72 #include <dev/scsipi/scsiconf.h> 73 #include <machine/cpu.h> 74 #include <amiga/amiga/custom.h> 75 #include <amiga/amiga/cc.h> 76 #include <amiga/amiga/device.h> 77 #include <amiga/amiga/isr.h> 78 #include <amiga/dev/siopreg.h> 79 #include <amiga/dev/siopvar.h> 80 #include <amiga/dev/zbusvar.h> 81 82 #ifdef __powerpc__ 83 #define badaddr(a) badaddr_read(a, 2, NULL) 84 #endif 85 86 void afscattach(struct device *, struct device *, void *); 87 int afscmatch(struct device *, struct cfdata *, void *); 88 int afsc_dmaintr(void *); 89 #ifdef DEBUG 90 void afsc_dump(void); 91 #endif 92 93 94 #ifdef DEBUG 95 #endif 96 97 CFATTACH_DECL(afsc, sizeof(struct siop_softc), 98 afscmatch, afscattach, NULL, NULL); 99 100 CFATTACH_DECL(aftsc, sizeof(struct siop_softc), 101 afscmatch, afscattach, NULL, NULL); 102 103 /* 104 * if we are a Commodore Amiga A4091 or possibly an A4000T 105 */ 106 int 107 afscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 108 { 109 struct zbus_args *zap; 110 siop_regmap_p rp; 111 u_long temp, scratch; 112 113 zap = auxp; 114 if (zap->manid == 514 && zap->prodid == 84) 115 return(1); /* It's an A4091 SCSI card */ 116 if (!is_a4000() || !matchname("afsc", auxp)) 117 return(0); /* Not on an A4000 or not A4000T SCSI */ 118 rp = ztwomap(0xdd0040); 119 if (badaddr((void *)__UNVOLATILE(&rp->siop_scratch)) || 120 badaddr((void *)__UNVOLATILE(&rp->siop_temp))) { 121 return(0); 122 } 123 scratch = rp->siop_scratch; 124 temp = rp->siop_temp; 125 rp->siop_scratch = 0xdeadbeef; 126 rp->siop_temp = 0xaaaa5555; 127 if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555) 128 return(0); 129 rp->siop_scratch = scratch; 130 rp->siop_temp = temp; 131 if (rp->siop_scratch != scratch || rp->siop_temp != temp) 132 return(0); 133 return(1); 134 } 135 136 void 137 afscattach(struct device *pdp, struct device *dp, void *auxp) 138 { 139 struct siop_softc *sc = (struct siop_softc *)dp; 140 struct zbus_args *zap; 141 siop_regmap_p rp; 142 struct scsipi_adapter *adapt = &sc->sc_adapter; 143 struct scsipi_channel *chan = &sc->sc_channel; 144 145 printf("\n"); 146 147 zap = auxp; 148 149 if (zap->manid == 514 && zap->prodid == 84) 150 sc->sc_siopp = rp = (siop_regmap_p)((char *)zap->va + 151 0x00800000); 152 else 153 sc->sc_siopp = rp = ztwomap(0xdd0040); 154 155 /* 156 * CTEST7 = 80 [disable burst] 157 */ 158 sc->sc_clock_freq = 50; /* Clock = 50 MHz */ 159 sc->sc_ctest7 = SIOP_CTEST7_CDIS; 160 sc->sc_dcntl = SIOP_DCNTL_EA; 161 162 /* 163 * Fill in the scsipi_adapter. 164 */ 165 memset(adapt, 0, sizeof(*adapt)); 166 adapt->adapt_dev = &sc->sc_dev; 167 adapt->adapt_nchannels = 1; 168 adapt->adapt_openings = 7; 169 adapt->adapt_max_periph = 1; 170 adapt->adapt_request = siop_scsipi_request; 171 adapt->adapt_minphys = siop_minphys; 172 173 /* 174 * Fill in the scsipi_channel. 175 */ 176 memset(chan, 0, sizeof(*chan)); 177 chan->chan_adapter = adapt; 178 chan->chan_bustype = &scsi_bustype; 179 chan->chan_channel = 0; 180 chan->chan_ntargets = 8; 181 chan->chan_nluns = 8; 182 chan->chan_id = 7; 183 184 siopinitialize(sc); 185 186 sc->sc_isr.isr_intr = afsc_dmaintr; 187 sc->sc_isr.isr_arg = sc; 188 sc->sc_isr.isr_ipl = 2; 189 add_isr (&sc->sc_isr); 190 191 /* 192 * attach all scsi units on us 193 */ 194 config_found(dp, chan, scsiprint); 195 } 196 197 int 198 afsc_dmaintr(void *arg) 199 { 200 struct siop_softc *sc = arg; 201 siop_regmap_p rp; 202 u_char istat; 203 204 if (sc->sc_flags & SIOP_INTSOFF) 205 return (0); /* interrupts are not active */ 206 rp = sc->sc_siopp; 207 istat = rp->siop_istat; 208 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 209 return(0); 210 /* 211 * save interrupt status, DMA status, and SCSI status 0 212 * (may need to deal with stacked interrupts?) 213 */ 214 sc->sc_sstat0 = rp->siop_sstat0; 215 sc->sc_istat = istat; 216 sc->sc_dstat = rp->siop_dstat; 217 siopintr(sc); 218 return(1); 219 } 220 221 #ifdef DEBUG 222 void 223 afsc_dump(void) 224 { 225 extern struct cfdriver afsc_cd; 226 struct siop_softc *sc; 227 int i; 228 229 for (i = 0; i < afsc_cd.cd_ndevs; ++i) { 230 sc = device_lookup_private(&afsc_cd, i); 231 if (sc != NULL) 232 siop_dump(sc); 233 } 234 } 235 #endif 236