The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*      $NetBSD: opl_isa.c,v 1.9 2002/10/02 03:10:49 thorpej Exp $      */
    2 
    3 /*-
    4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Lennart Augustsson.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #include <sys/cdefs.h>
   40 __KERNEL_RCSID(0, "$NetBSD: opl_isa.c,v 1.9 2002/10/02 03:10:49 thorpej Exp $");
   41 
   42 #include <sys/param.h>
   43 #include <sys/systm.h>
   44 #include <sys/kernel.h>
   45 #include <sys/errno.h>
   46 #include <sys/device.h>
   47 #include <sys/malloc.h>
   48 #include <sys/proc.h>
   49 #include <sys/conf.h>
   50 #include <sys/select.h>
   51 #include <sys/audioio.h>
   52 #include <sys/midiio.h>
   53 
   54 #include <machine/bus.h>
   55 
   56 #include <dev/audio_if.h>
   57 #include <dev/midi_if.h>
   58 
   59 #include <dev/ic/oplreg.h>
   60 #include <dev/ic/oplvar.h>
   61 
   62 #include <dev/isa/isavar.h>
   63 
   64 #define OPL_SIZE 4
   65 
   66 int     opl_isa_match __P((struct device *, struct cfdata *, void *));
   67 void    opl_isa_attach __P((struct device *, struct device *, void *));
   68 
   69 CFATTACH_DECL(opl_isa, sizeof(struct opl_softc),
   70     opl_isa_match, opl_isa_attach, NULL, NULL);
   71 
   72 int
   73 opl_isa_match(parent, match, aux)
   74         struct device *parent;
   75         struct cfdata *match;
   76         void *aux;
   77 {
   78         struct isa_attach_args *ia = aux;
   79         struct opl_softc sc;
   80         int r;
   81 
   82         if (ia->ia_nio < 1)
   83                 return (0);
   84 
   85         if (ISA_DIRECT_CONFIG(ia))
   86                 return (0);
   87 
   88         if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT)
   89                 return (0);
   90 
   91         memset(&sc, 0, sizeof sc);
   92         sc.iot = ia->ia_iot;
   93         if (bus_space_map(sc.iot, ia->ia_io[0].ir_addr, OPL_SIZE, 0, &sc.ioh))
   94                 return (0);
   95         r = opl_find(&sc);
   96         bus_space_unmap(sc.iot, sc.ioh, OPL_SIZE);
   97         if (r != 0) {
   98                 ia->ia_nio = 1;
   99                 ia->ia_io[0].ir_size = OPL_SIZE;
  100 
  101                 ia->ia_nirq = 0;
  102                 ia->ia_niomem = 0;
  103                 ia->ia_ndrq = 0;
  104         }
  105         return (r);
  106 }
  107 
  108 void
  109 opl_isa_attach(parent, self, aux)
  110         struct device *parent;
  111         struct device *self;
  112         void *aux;
  113 {
  114         struct opl_softc *sc = (struct opl_softc *)self;
  115         struct isa_attach_args *ia = aux;
  116 
  117         sc->iot = ia->ia_iot;
  118 
  119         if (bus_space_map(sc->iot, ia->ia_io[0].ir_addr, OPL_SIZE,
  120             0, &sc->ioh)) {
  121                 printf("opl_isa_attach: bus_space_map failed\n");
  122                 return;
  123         }
  124         sc->offs = 0;
  125 
  126         opl_attach(sc);
  127 }

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