1 /* $NetBSD: afsc.c,v 1.31 2002/10/02 04:55:48 thorpej 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: afsc.c,v 1.31 2002/10/02 04:55:48 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 #include <dev/scsipi/scsi_all.h> 47 #include <dev/scsipi/scsipi_all.h> 48 #include <dev/scsipi/scsiconf.h> 49 #include <machine/cpu.h> 50 #include <amiga/amiga/custom.h> 51 #include <amiga/amiga/cc.h> 52 #include <amiga/amiga/device.h> 53 #include <amiga/amiga/isr.h> 54 #include <amiga/dev/siopreg.h> 55 #include <amiga/dev/siopvar.h> 56 #include <amiga/dev/zbusvar.h> 57 58 void afscattach(struct device *, struct device *, void *); 59 int afscmatch(struct device *, struct cfdata *, void *); 60 int afsc_dmaintr(void *); 61 #ifdef DEBUG 62 void afsc_dump(void); 63 #endif 64 65 66 #ifdef DEBUG 67 #endif 68 69 CFATTACH_DECL(afsc, sizeof(struct siop_softc), 70 afscmatch, afscattach, NULL, NULL); 71 72 CFATTACH_DECL(aftsc, sizeof(struct siop_softc), 73 afscmatch, afscattach, NULL, NULL); 74 75 /* 76 * if we are a Commodore Amiga A4091 or possibly an A4000T 77 */ 78 int 79 afscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 80 { 81 struct zbus_args *zap; 82 siop_regmap_p rp; 83 u_long temp, scratch; 84 85 zap = auxp; 86 if (zap->manid == 514 && zap->prodid == 84) 87 return(1); /* It's an A4091 SCSI card */ 88 if (!is_a4000() || !matchname(auxp, "afsc")) 89 return(0); /* Not on an A4000 or not A4000T SCSI */ 90 rp = ztwomap(0xdd0040); 91 if (badaddr((caddr_t)&rp->siop_scratch) || badaddr((caddr_t)&rp->siop_temp)) { 92 return(0); 93 } 94 scratch = rp->siop_scratch; 95 temp = rp->siop_temp; 96 rp->siop_scratch = 0xdeadbeef; 97 rp->siop_temp = 0xaaaa5555; 98 if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555) 99 return(0); 100 rp->siop_scratch = scratch; 101 rp->siop_temp = temp; 102 if (rp->siop_scratch != scratch || rp->siop_temp != temp) 103 return(0); 104 return(1); 105 } 106 107 void 108 afscattach(struct device *pdp, struct device *dp, void *auxp) 109 { 110 struct siop_softc *sc = (struct siop_softc *)dp; 111 struct zbus_args *zap; 112 siop_regmap_p rp; 113 struct scsipi_adapter *adapt = &sc->sc_adapter; 114 struct scsipi_channel *chan = &sc->sc_channel; 115 116 printf("\n"); 117 118 zap = auxp; 119 120 if (zap->manid == 514 && zap->prodid == 84) 121 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 122 0x00800000); 123 else 124 sc->sc_siopp = rp = ztwomap(0xdd0040); 125 126 /* 127 * CTEST7 = 80 [disable burst] 128 */ 129 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 130 sc->sc_ctest7 = SIOP_CTEST7_CDIS; 131 sc->sc_dcntl = SIOP_DCNTL_EA; 132 133 /* 134 * Fill in the scsipi_adapter. 135 */ 136 memset(adapt, 0, sizeof(*adapt)); 137 adapt->adapt_dev = &sc->sc_dev; 138 adapt->adapt_nchannels = 1; 139 adapt->adapt_openings = 7; 140 adapt->adapt_max_periph = 1; 141 adapt->adapt_request = siop_scsipi_request; 142 adapt->adapt_minphys = siop_minphys; 143 144 /* 145 * Fill in the scsipi_channel. 146 */ 147 memset(chan, 0, sizeof(*chan)); 148 chan->chan_adapter = adapt; 149 chan->chan_bustype = &scsi_bustype; 150 chan->chan_channel = 0; 151 chan->chan_ntargets = 8; 152 chan->chan_nluns = 8; 153 chan->chan_id = 7; 154 155 siopinitialize(sc); 156 157 sc->sc_isr.isr_intr = afsc_dmaintr; 158 sc->sc_isr.isr_arg = sc; 159 sc->sc_isr.isr_ipl = 2; 160 add_isr (&sc->sc_isr); 161 162 /* 163 * attach all scsi units on us 164 */ 165 config_found(dp, chan, scsiprint); 166 } 167 168 int 169 afsc_dmaintr(void *arg) 170 { 171 struct siop_softc *sc = arg; 172 siop_regmap_p rp; 173 u_char istat; 174 175 if (sc->sc_flags & SIOP_INTSOFF) 176 return (0); /* interrupts are not active */ 177 rp = sc->sc_siopp; 178 istat = rp->siop_istat; 179 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 180 return(0); 181 /* 182 * save interrupt status, DMA status, and SCSI status 0 183 * (may need to deal with stacked interrupts?) 184 */ 185 sc->sc_sstat0 = rp->siop_sstat0; 186 sc->sc_istat = istat; 187 sc->sc_dstat = rp->siop_dstat; 188 siopintr(sc); 189 return(1); 190 } 191 192 #ifdef DEBUG 193 void 194 afsc_dump(void) 195 { 196 extern struct cfdriver afsc_cd; 197 int i; 198 199 for (i = 0; i < afsc_cd.cd_ndevs; ++i) 200 if (afsc_cd.cd_devs[i]) 201 siop_dump(afsc_cd.cd_devs[i]); 202 } 203 #endif 204