afsc.c revision 1.35
1/* $NetBSD: afsc.c,v 1.35 2005/06/13 21:34:16 jmc 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 1.35 2005/06/13 21:34:16 jmc 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 82void afscattach(struct device *, struct device *, void *); 83int afscmatch(struct device *, struct cfdata *, void *); 84int afsc_dmaintr(void *); 85#ifdef DEBUG 86void afsc_dump(void); 87#endif 88 89 90#ifdef DEBUG 91#endif 92 93CFATTACH_DECL(afsc, sizeof(struct siop_softc), 94 afscmatch, afscattach, NULL, NULL); 95 96CFATTACH_DECL(aftsc, sizeof(struct siop_softc), 97 afscmatch, afscattach, NULL, NULL); 98 99/* 100 * if we are a Commodore Amiga A4091 or possibly an A4000T 101 */ 102int 103afscmatch(struct device *pdp, struct cfdata *cfp, 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("afsc", auxp)) 113 return(0); /* Not on an A4000 or not A4000T SCSI */ 114 rp = ztwomap(0xdd0040); 115 if (badaddr((caddr_t)__UNVOLATILE(&rp->siop_scratch)) || 116 badaddr((caddr_t)__UNVOLATILE(&rp->siop_temp))) { 117 return(0); 118 } 119 scratch = rp->siop_scratch; 120 temp = rp->siop_temp; 121 rp->siop_scratch = 0xdeadbeef; 122 rp->siop_temp = 0xaaaa5555; 123 if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555) 124 return(0); 125 rp->siop_scratch = scratch; 126 rp->siop_temp = temp; 127 if (rp->siop_scratch != scratch || rp->siop_temp != temp) 128 return(0); 129 return(1); 130} 131 132void 133afscattach(struct device *pdp, struct device *dp, void *auxp) 134{ 135 struct siop_softc *sc = (struct siop_softc *)dp; 136 struct zbus_args *zap; 137 siop_regmap_p rp; 138 struct scsipi_adapter *adapt = &sc->sc_adapter; 139 struct scsipi_channel *chan = &sc->sc_channel; 140 141 printf("\n"); 142 143 zap = auxp; 144 145 if (zap->manid == 514 && zap->prodid == 84) 146 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 147 0x00800000); 148 else 149 sc->sc_siopp = rp = ztwomap(0xdd0040); 150 151 /* 152 * CTEST7 = 80 [disable burst] 153 */ 154 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 155 sc->sc_ctest7 = SIOP_CTEST7_CDIS; 156 sc->sc_dcntl = SIOP_DCNTL_EA; 157 158 /* 159 * Fill in the scsipi_adapter. 160 */ 161 memset(adapt, 0, sizeof(*adapt)); 162 adapt->adapt_dev = &sc->sc_dev; 163 adapt->adapt_nchannels = 1; 164 adapt->adapt_openings = 7; 165 adapt->adapt_max_periph = 1; 166 adapt->adapt_request = siop_scsipi_request; 167 adapt->adapt_minphys = siop_minphys; 168 169 /* 170 * Fill in the scsipi_channel. 171 */ 172 memset(chan, 0, sizeof(*chan)); 173 chan->chan_adapter = adapt; 174 chan->chan_bustype = &scsi_bustype; 175 chan->chan_channel = 0; 176 chan->chan_ntargets = 8; 177 chan->chan_nluns = 8; 178 chan->chan_id = 7; 179 180 siopinitialize(sc); 181 182 sc->sc_isr.isr_intr = afsc_dmaintr; 183 sc->sc_isr.isr_arg = sc; 184 sc->sc_isr.isr_ipl = 2; 185 add_isr (&sc->sc_isr); 186 187 /* 188 * attach all scsi units on us 189 */ 190 config_found(dp, chan, scsiprint); 191} 192 193int 194afsc_dmaintr(void *arg) 195{ 196 struct siop_softc *sc = arg; 197 siop_regmap_p rp; 198 u_char istat; 199 200 if (sc->sc_flags & SIOP_INTSOFF) 201 return (0); /* interrupts are not active */ 202 rp = sc->sc_siopp; 203 istat = rp->siop_istat; 204 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 205 return(0); 206 /* 207 * save interrupt status, DMA status, and SCSI status 0 208 * (may need to deal with stacked interrupts?) 209 */ 210 sc->sc_sstat0 = rp->siop_sstat0; 211 sc->sc_istat = istat; 212 sc->sc_dstat = rp->siop_dstat; 213 siopintr(sc); 214 return(1); 215} 216 217#ifdef DEBUG 218void 219afsc_dump(void) 220{ 221 extern struct cfdriver afsc_cd; 222 int i; 223 224 for (i = 0; i < afsc_cd.cd_ndevs; ++i) 225 if (afsc_cd.cd_devs[i]) 226 siop_dump(afsc_cd.cd_devs[i]); 227} 228#endif 229