sys/dev/ofisa/sb_ofisa.c

   1 /*      $NetBSD: sb_ofisa.c,v 1.16 2008/03/15 21:09:02 cube Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   9  * NASA Ames Research Center.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: sb_ofisa.c,v 1.16 2008/03/15 21:09:02 cube Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/device.h>
  39
  40 #include <sys/bus.h>
  41 #include <sys/intr.h>
  42
  43 #include <sys/audioio.h>
  44 #include <dev/audio_if.h>
  45 #include <dev/midi_if.h>
  46 #include <dev/mulaw.h>
  47
  48 #include <dev/ofw/openfirm.h>
  49 #include <dev/isa/isavar.h>
  50 #include <dev/ofisa/ofisavar.h>
  51
  52 #include <dev/isa/sbreg.h>
  53 #include <dev/isa/sbvar.h>
  54 #include <dev/isa/sbdspvar.h>
  55
  56 int     sb_ofisa_match(device_t, cfdata_t, void *);
  57 void    sb_ofisa_attach(device_t, device_t, void *);
  58
  59 CFATTACH_DECL_NEW(sb_ofisa, sizeof(struct sbdsp_softc),
  60     sb_ofisa_match, sb_ofisa_attach, NULL, NULL);
  61
  62 int
  63 sb_ofisa_match(device_t parent, cfdata_t cf, void *aux)
  64 {
  65         struct ofisa_attach_args *aa = aux;
  66         static const char *const compatible_strings[] = {
  67                 "pnpPNP,b000",                  /* generic SB 1.5 */
  68                 "pnpPNP,b001",                  /* generic SB 2.0 */
  69                 "pnpPNP,b002",                  /* generic SB Pro */
  70                 "pnpPNP,b003",                  /* generic SB 16 */
  71                 NULL,
  72         };
  73         int rv = 0;
  74
  75         if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1) {
  76                 /*
  77                  * Use a low match priority so that a more specific driver
  78                  * can match, e.g. a native ESS driver.
  79                  */
  80                 rv = 1;
  81         }
  82
  83         return (rv);
  84 }
  85
  86 void
  87 sb_ofisa_attach(device_t parent, device_t self, void *aux)
  88 {
  89         struct sbdsp_softc *sc = device_private(self);
  90         struct ofisa_attach_args *aa = aux;
  91         struct ofisa_reg_desc reg;
  92         struct ofisa_intr_desc intr;
  93         struct ofisa_dma_desc dma[2];
  94         int n, ndrq;
  95         char *model;
  96
  97         sc->sc_dev = self;
  98
  99         /*
 100          * We're living on an OFW.  We have to ask the OFW what our
 101          * registers and interrupts properties look like.
 102          *
 103          * We expect:
 104          *
 105          *      1 i/o register region
 106          *      1 interrupt
 107          *      1 or 2 DMA channels
 108          */
 109
 110         n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
 111         if (n != 1) {
 112                 printf(": error getting register data\n");
 113                 return;
 114         }
 115         if (reg.type != OFISA_REG_TYPE_IO) {
 116                 printf(": register type not i/o\n");
 117                 return;
 118         }
 119         if (reg.len != SB_NPORT && reg.len != SBP_NPORT) {
 120                 printf(": weird register size (%lu, expected %d or %d)\n",
 121                     (unsigned long)reg.len, SB_NPORT, SBP_NPORT);
 122                 return;
 123         }
 124
 125         n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
 126         if (n != 1) {
 127                 printf(": error getting interrupt data\n");
 128                 return;
 129         }
 130
 131         ndrq = ofisa_dma_get(aa->oba.oba_phandle, dma, 2);
 132         if (ndrq != 1 && ndrq != 2) {
 133                 printf(": error getting DMA data\n");
 134                 return;
 135         }
 136
 137         sc->sc_ic = aa->ic;
 138
 139         sc->sc_iot = aa->iot;
 140         if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, &sc->sc_ioh)) {
 141                 aprint_error(": unable to map register space\n");
 142                 return;
 143         }
 144
 145         /* XXX These are only for setting chip configuration registers. */
 146         sc->sc_iobase = reg.addr;
 147         sc->sc_irq = intr.irq;
 148
 149         sc->sc_drq8 = DRQUNK;
 150         sc->sc_drq16 = DRQUNK;
 151
 152         for (n = 0; n < ndrq; n++) {
 153                 /* XXX check mode? */
 154                 switch (dma[n].width) {
 155                 case 8:
 156                         if (sc->sc_drq8 == DRQUNK)
 157                                 sc->sc_drq8 = dma[n].drq;
 158                         break;
 159                 case 16:
 160                         if (sc->sc_drq16 == DRQUNK)
 161                                 sc->sc_drq16 = dma[n].drq;
 162                         break;
 163                 default:
 164                         aprint_error(": weird DMA width %d\n", dma[n].width);
 165                         return;
 166                 }
 167         }
 168
 169         if (sc->sc_drq8 == DRQUNK) {
 170                 aprint_error(": no 8-bit DMA channel\n");
 171                 return;
 172         }
 173
 174         if (sbmatch(sc) == 0) {
 175                 aprint_error(": sbmatch failed\n");
 176                 return;
 177         }
 178
 179         sc->sc_ih = isa_intr_establish(aa->ic, intr.irq, IST_EDGE, IPL_AUDIO,
 180             sbdsp_intr, sc);
 181
 182         n = OF_getproplen(aa->oba.oba_phandle, "model");
 183         if (n > 0) {
 184                 model = alloca(n);
 185                 if (OF_getprop(aa->oba.oba_phandle, "model", model, n) == n)
 186                         aprint_normal(": %s\n%s", model, device_xname(self));
 187         }
 188
 189         sbattach(sc);
 190 }