sys/dev/isa/sb_isa.c

   1 /*      $NetBSD: sb_isa.c,v 1.35 2007/10/19 12:00:22 ad Exp $   */
   2
   3 /*
   4  * Copyright (c) 1991-1993 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the Computer Systems
  18  *      Engineering Group at Lawrence Berkeley Laboratory.
  19  * 4. Neither the name of the University nor of the Laboratory may be used
  20  *    to endorse or promote products derived from this software without
  21  *    specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __KERNEL_RCSID(0, "$NetBSD: sb_isa.c,v 1.35 2007/10/19 12:00:22 ad Exp $");
  39
  40 #include <sys/param.h>
  41 #include <sys/systm.h>
  42 #include <sys/errno.h>
  43 #include <sys/ioctl.h>
  44 #include <sys/syslog.h>
  45 #include <sys/device.h>
  46 #include <sys/proc.h>
  47
  48 #include <sys/bus.h>
  49
  50 #include <sys/audioio.h>
  51 #include <dev/audio_if.h>
  52 #include <dev/midi_if.h>
  53 #include <dev/mulaw.h>
  54
  55 #include <dev/isa/isavar.h>
  56 #include <dev/isa/isadmavar.h>
  57
  58 #include <dev/isa/sbreg.h>
  59 #include <dev/isa/sbvar.h>
  60
  61 #include <dev/isa/sbdspvar.h>
  62
  63 static  int sbfind(device_t, struct sbdsp_softc *, int,
  64             struct isa_attach_args *, cfdata_t);
  65
  66 int     sb_isa_match(device_t, cfdata_t, void *);
  67 void    sb_isa_attach(device_t, device_t, void *);
  68
  69 CFATTACH_DECL_NEW(sb_isa, sizeof(struct sbdsp_softc),
  70     sb_isa_match, sb_isa_attach, NULL, NULL);
  71
  72 /*
  73  * Probe / attach routines.
  74  */
  75
  76 /*
  77  * Probe for the soundblaster hardware.
  78  */
  79 int
  80 sb_isa_match(device_t parent, cfdata_t match, void *aux)
  81 {
  82         struct isa_attach_args *ia = aux;
  83         struct sbdsp_softc probesc, *sc = &probesc;
  84
  85         if (ia->ia_nio < 1)
  86                 return (0);
  87         if (ia->ia_nirq < 1)
  88                 return (0);
  89         if (ia->ia_ndrq < 1)
  90                 return (0);
  91
  92         if (ISA_DIRECT_CONFIG(ia))
  93                 return (0);
  94
  95         memset(sc, 0, sizeof *sc);
  96         return sbfind(parent, sc, 1, aux, match);
  97 }
  98
  99 static int
 100 sbfind(device_t parent, struct sbdsp_softc *sc, int probing,
 101     struct isa_attach_args *ia, cfdata_t match)
 102 {
 103         int rc = 0;
 104
 105         if (!SB_BASE_VALID(ia->ia_io[0].ir_addr)) {
 106                 printf("sb: configured iobase 0x%x invalid\n",
 107                     ia->ia_io[0].ir_addr);
 108                 return 0;
 109         }
 110
 111         sc->sc_ic = ia->ia_ic;
 112
 113         sc->sc_iot = ia->ia_iot;
 114         /* Map i/o space [we map 24 ports which is the max of the sb and pro */
 115         if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, SBP_NPORT, 0,
 116             &sc->sc_ioh))
 117                 return 0;
 118
 119         /* XXX These are only for setting chip configuration registers. */
 120         sc->sc_iobase = ia->ia_io[0].ir_addr;
 121         sc->sc_irq = ia->ia_irq[0].ir_irq;
 122
 123         sc->sc_drq8 = ia->ia_drq[0].ir_drq;
 124         sc->sc_drq16 = ia->ia_drq[1].ir_drq;
 125
 126         if (!sbmatch(sc, probing, match))
 127                 goto bad;
 128
 129         rc = 1;
 130
 131         if (probing) {
 132                 ia->ia_nio = 1;
 133                 if (ISSBPROCLASS(sc))
 134                         ia->ia_io[0].ir_size = SBP_NPORT;
 135                 else
 136                         ia->ia_io[0].ir_size = SB_NPORT;
 137
 138                 if (!ISSB16CLASS(sc) && sc->sc_model != SB_JAZZ)
 139                         ia->ia_ndrq = 1;
 140                 else
 141                         ia->ia_ndrq = 2;
 142
 143                 ia->ia_nirq = 1;
 144                 ia->ia_irq[0].ir_irq = sc->sc_irq;
 145
 146                 ia->ia_niomem = 0;
 147         }
 148
 149 bad:
 150         bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
 151         return rc;
 152 }
 153
 154
 155 /*
 156  * Attach hardware to driver, attach hardware driver to audio
 157  * pseudo-device driver .
 158  */
 159 void
 160 sb_isa_attach(device_t parent, device_t self, void *aux)
 161 {
 162         struct sbdsp_softc *sc = device_private(self);
 163         struct isa_attach_args *ia = aux;
 164
 165         sc->sc_dev = self;
 166
 167         if (!sbfind(parent, sc, 0, ia, device_cfdata(self)) ||
 168             bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr,
 169             ia->ia_io[0].ir_size, 0, &sc->sc_ioh)) {
 170                 aprint_error_dev(self, "sbfind failed\n");
 171                 return;
 172         }
 173
 174         sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
 175             IST_EDGE, IPL_AUDIO, sbdsp_intr, sc);
 176
 177         sbattach(sc);
 178 }