1 /* $NetBSD: afsc.c,v 1.29 2002/01/28 09:56:50 aymeric 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 1.29 2002/01/28 09:56:50 aymeric 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 struct cfattach afsc_ca = { 70 sizeof(struct siop_softc), afscmatch, afscattach 71 }; 72 73 struct cfattach aftsc_ca = { 74 sizeof(struct siop_softc), afscmatch, afscattach 75 }; 76 77 /* 78 * if we are a Commodore Amiga A4091 or possibly an A4000T 79 */ 80 int 81 afscmatch(struct device *pdp, struct cfdata *cfp, 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(struct device *pdp, struct device *dp, void *auxp) 111 { 112 struct siop_softc *sc = (struct siop_softc *)dp; 113 struct zbus_args *zap; 114 siop_regmap_p rp; 115 struct scsipi_adapter *adapt = &sc->sc_adapter; 116 struct scsipi_channel *chan = &sc->sc_channel; 117 118 printf("\n"); 119 120 zap = auxp; 121 122 if (zap->manid == 514 && zap->prodid == 84) 123 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 124 0x00800000); 125 else 126 sc->sc_siopp = rp = ztwomap(0xdd0040); 127 128 /* 129 * CTEST7 = 80 [disable burst] 130 */ 131 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 132 sc->sc_ctest7 = SIOP_CTEST7_CDIS; 133 sc->sc_dcntl = SIOP_DCNTL_EA; 134 135 /* 136 * Fill in the scsipi_adapter. 137 */ 138 memset(adapt, 0, sizeof(*adapt)); 139 adapt->adapt_dev = &sc->sc_dev; 140 adapt->adapt_nchannels = 1; 141 adapt->adapt_openings = 7; 142 adapt->adapt_max_periph = 1; 143 adapt->adapt_request = siop_scsipi_request; 144 adapt->adapt_minphys = siop_minphys; 145 146 /* 147 * Fill in the scsipi_channel. 148 */ 149 memset(chan, 0, sizeof(*chan)); 150 chan->chan_adapter = adapt; 151 chan->chan_bustype = &scsi_bustype; 152 chan->chan_channel = 0; 153 chan->chan_ntargets = 8; 154 chan->chan_nluns = 8; 155 chan->chan_id = 7; 156 157 siopinitialize(sc); 158 159 sc->sc_isr.isr_intr = afsc_dmaintr; 160 sc->sc_isr.isr_arg = sc; 161 sc->sc_isr.isr_ipl = 2; 162 add_isr (&sc->sc_isr); 163 164 /* 165 * attach all scsi units on us 166 */ 167 config_found(dp, chan, scsiprint); 168 } 169 170 int 171 afsc_dmaintr(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(void) 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