sb_isa.c

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    1 /*      $NetBSD: sb_isa.c,v 1.29 2002/10/02 03:10:50 thorpej 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 1.29 2002/10/02 03:10:50 thorpej 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 <machine/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 __P((struct device *, struct sbdsp_softc *, int,
   64             struct isa_attach_args *));
   65 
   66 int     sb_isa_match __P((struct device *, struct cfdata *, void *));
   67 void    sb_isa_attach __P((struct device *, struct device *, void *));
   68 
   69 CFATTACH_DECL(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(parent, match, aux)
   81         struct device *parent;
   82         struct cfdata *match;
   83         void *aux;
   84 {
   85         struct isa_attach_args *ia = aux;
   86         struct sbdsp_softc probesc, *sc = &probesc;
   87 
   88         if (ia->ia_nio < 1)
   89                 return (0);
   90         if (ia->ia_nirq < 1)
   91                 return (0);
   92         if (ia->ia_ndrq < 1)
   93                 return (0);
   94 
   95         if (ISA_DIRECT_CONFIG(ia))
   96                 return (0);
   97 
   98         memset(sc, 0, sizeof *sc);
   99         strcpy(sc->sc_dev.dv_xname, "sb");
  100         sc->sc_dev.dv_cfdata = match;
  101         return sbfind(parent, sc, 1, aux);
  102 }
  103 
  104 static int
  105 sbfind(parent, sc, probing, ia)
  106         struct device *parent;
  107         struct sbdsp_softc *sc;
  108         int probing;
  109         struct isa_attach_args *ia;
  110 {
  111         int rc = 0;
  112 
  113         if (!SB_BASE_VALID(ia->ia_io[0].ir_addr)) {
  114                 printf("sb: configured iobase 0x%x invalid\n",
  115                     ia->ia_io[0].ir_addr);
  116                 return 0;
  117         }
  118 
  119         sc->sc_ic = ia->ia_ic;
  120 
  121         sc->sc_iot = ia->ia_iot;
  122         /* Map i/o space [we map 24 ports which is the max of the sb and pro */
  123         if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, SBP_NPORT, 0,
  124             &sc->sc_ioh))
  125                 return 0;
  126 
  127         /* XXX These are only for setting chip configuration registers. */
  128         sc->sc_iobase = ia->ia_io[0].ir_addr;
  129         sc->sc_irq = ia->ia_irq[0].ir_irq;
  130 
  131         sc->sc_drq8 = ia->ia_drq[0].ir_drq;
  132         sc->sc_drq16 = ia->ia_drq[1].ir_drq;
  133 
  134         if (!sbmatch(sc))
  135                 goto bad;
  136 
  137         rc = 1;
  138 
  139         if (probing) {
  140                 ia->ia_nio = 1;
  141                 if (ISSBPROCLASS(sc))
  142                         ia->ia_io[0].ir_size = SBP_NPORT;
  143                 else
  144                         ia->ia_io[0].ir_size = SB_NPORT;
  145 
  146                 if (!ISSB16CLASS(sc) && sc->sc_model != SB_JAZZ)
  147                         ia->ia_ndrq = 1;
  148                 else
  149                         ia->ia_ndrq = 2;
  150 
  151                 ia->ia_nirq = 1;
  152                 ia->ia_irq[0].ir_irq = sc->sc_irq;
  153 
  154                 ia->ia_niomem = 0;
  155         }
  156 
  157 bad:
  158         bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
  159         return rc;
  160 }
  161 
  162 
  163 /*
  164  * Attach hardware to driver, attach hardware driver to audio
  165  * pseudo-device driver .
  166  */
  167 void
  168 sb_isa_attach(parent, self, aux)
  169         struct device *parent, *self;
  170         void *aux;
  171 {
  172         struct sbdsp_softc *sc = (struct sbdsp_softc *)self;
  173         struct isa_attach_args *ia = aux;
  174 
  175         if (!sbfind(parent, sc, 0, ia) || 
  176             bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr,
  177             ia->ia_io[0].ir_size, 0, &sc->sc_ioh)) {
  178                 printf("%s: sbfind failed\n", sc->sc_dev.dv_xname);
  179                 return;
  180         }
  181 
  182         sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
  183             IST_EDGE, IPL_AUDIO, sbdsp_intr, sc);
  184 
  185         sbattach(sc);
  186 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/isa/sb_isa.c

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sys/dev/isa/sb_isa.c