1 /* $NetBSD: afsc.c,v 1.32 2003/04/09 01:54:43 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 1.32 2003/04/09 01:54:43 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 47 #include <uvm/uvm_extern.h> 48 49 #include <dev/scsipi/scsi_all.h> 50 #include <dev/scsipi/scsipi_all.h> 51 #include <dev/scsipi/scsiconf.h> 52 #include <machine/cpu.h> 53 #include <amiga/amiga/custom.h> 54 #include <amiga/amiga/cc.h> 55 #include <amiga/amiga/device.h> 56 #include <amiga/amiga/isr.h> 57 #include <amiga/dev/siopreg.h> 58 #include <amiga/dev/siopvar.h> 59 #include <amiga/dev/zbusvar.h> 60 61 void afscattach(struct device *, struct device *, void *); 62 int afscmatch(struct device *, struct cfdata *, void *); 63 int afsc_dmaintr(void *); 64 #ifdef DEBUG 65 void afsc_dump(void); 66 #endif 67 68 69 #ifdef DEBUG 70 #endif 71 72 CFATTACH_DECL(afsc, sizeof(struct siop_softc), 73 afscmatch, afscattach, NULL, NULL); 74 75 CFATTACH_DECL(aftsc, sizeof(struct siop_softc), 76 afscmatch, afscattach, NULL, NULL); 77 78 /* 79 * if we are a Commodore Amiga A4091 or possibly an A4000T 80 */ 81 int 82 afscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 83 { 84 struct zbus_args *zap; 85 siop_regmap_p rp; 86 u_long temp, scratch; 87 88 zap = auxp; 89 if (zap->manid == 514 && zap->prodid == 84) 90 return(1); /* It's an A4091 SCSI card */ 91 if (!is_a4000() || !matchname(auxp, "afsc")) 92 return(0); /* Not on an A4000 or not A4000T SCSI */ 93 rp = ztwomap(0xdd0040); 94 if (badaddr((caddr_t)&rp->siop_scratch) || badaddr((caddr_t)&rp->siop_temp)) { 95 return(0); 96 } 97 scratch = rp->siop_scratch; 98 temp = rp->siop_temp; 99 rp->siop_scratch = 0xdeadbeef; 100 rp->siop_temp = 0xaaaa5555; 101 if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555) 102 return(0); 103 rp->siop_scratch = scratch; 104 rp->siop_temp = temp; 105 if (rp->siop_scratch != scratch || rp->siop_temp != temp) 106 return(0); 107 return(1); 108 } 109 110 void 111 afscattach(struct device *pdp, struct device *dp, void *auxp) 112 { 113 struct siop_softc *sc = (struct siop_softc *)dp; 114 struct zbus_args *zap; 115 siop_regmap_p rp; 116 struct scsipi_adapter *adapt = &sc->sc_adapter; 117 struct scsipi_channel *chan = &sc->sc_channel; 118 119 printf("\n"); 120 121 zap = auxp; 122 123 if (zap->manid == 514 && zap->prodid == 84) 124 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 125 0x00800000); 126 else 127 sc->sc_siopp = rp = ztwomap(0xdd0040); 128 129 /* 130 * CTEST7 = 80 [disable burst] 131 */ 132 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 133 sc->sc_ctest7 = SIOP_CTEST7_CDIS; 134 sc->sc_dcntl = SIOP_DCNTL_EA; 135 136 /* 137 * Fill in the scsipi_adapter. 138 */ 139 memset(adapt, 0, sizeof(*adapt)); 140 adapt->adapt_dev = &sc->sc_dev; 141 adapt->adapt_nchannels = 1; 142 adapt->adapt_openings = 7; 143 adapt->adapt_max_periph = 1; 144 adapt->adapt_request = siop_scsipi_request; 145 adapt->adapt_minphys = siop_minphys; 146 147 /* 148 * Fill in the scsipi_channel. 149 */ 150 memset(chan, 0, sizeof(*chan)); 151 chan->chan_adapter = adapt; 152 chan->chan_bustype = &scsi_bustype; 153 chan->chan_channel = 0; 154 chan->chan_ntargets = 8; 155 chan->chan_nluns = 8; 156 chan->chan_id = 7; 157 158 siopinitialize(sc); 159 160 sc->sc_isr.isr_intr = afsc_dmaintr; 161 sc->sc_isr.isr_arg = sc; 162 sc->sc_isr.isr_ipl = 2; 163 add_isr (&sc->sc_isr); 164 165 /* 166 * attach all scsi units on us 167 */ 168 config_found(dp, chan, scsiprint); 169 } 170 171 int 172 afsc_dmaintr(void *arg) 173 { 174 struct siop_softc *sc = arg; 175 siop_regmap_p rp; 176 u_char istat; 177 178 if (sc->sc_flags & SIOP_INTSOFF) 179 return (0); /* interrupts are not active */ 180 rp = sc->sc_siopp; 181 istat = rp->siop_istat; 182 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 183 return(0); 184 /* 185 * save interrupt status, DMA status, and SCSI status 0 186 * (may need to deal with stacked interrupts?) 187 */ 188 sc->sc_sstat0 = rp->siop_sstat0; 189 sc->sc_istat = istat; 190 sc->sc_dstat = rp->siop_dstat; 191 siopintr(sc); 192 return(1); 193 } 194 195 #ifdef DEBUG 196 void 197 afsc_dump(void) 198 { 199 extern struct cfdriver afsc_cd; 200 int i; 201 202 for (i = 0; i < afsc_cd.cd_ndevs; ++i) 203 if (afsc_cd.cd_devs[i]) 204 siop_dump(afsc_cd.cd_devs[i]); 205 } 206 #endif 207