sys/dev/isa/opl_isa.c

   1 /*      $NetBSD: opl_isa.c,v 1.18 2008/03/15 23:14:38 cube 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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: opl_isa.c,v 1.18 2008/03/15 23:14:38 cube Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/errno.h>
  39 #include <sys/device.h>
  40 #include <sys/malloc.h>
  41 #include <sys/proc.h>
  42 #include <sys/conf.h>
  43 #include <sys/select.h>
  44 #include <sys/audioio.h>
  45 #include <sys/midiio.h>
  46
  47 #include <sys/bus.h>
  48
  49 #include <dev/audio_if.h>
  50 #include <dev/midi_if.h>
  51
  52 #include <dev/ic/oplreg.h>
  53 #include <dev/ic/oplvar.h>
  54
  55 #include <dev/isa/isavar.h>
  56
  57 #define OPL_SIZE 4
  58
  59 int     opl_isa_match(device_t, cfdata_t, void *);
  60 void    opl_isa_attach(device_t, device_t, void *);
  61
  62 CFATTACH_DECL_NEW(opl_isa, sizeof(struct opl_softc),
  63     opl_isa_match, opl_isa_attach, NULL, NULL);
  64
  65 int
  66 opl_isa_match(device_t parent, cfdata_t match, void *aux)
  67 {
  68         struct isa_attach_args *ia = aux;
  69         bus_space_handle_t ioh;
  70         int r;
  71
  72         if (ia->ia_nio < 1)
  73                 return (0);
  74
  75         if (ISA_DIRECT_CONFIG(ia))
  76                 return (0);
  77
  78         if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
  79                 return (0);
  80
  81         if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, OPL_SIZE, 0, &ioh))
  82                 return (0);
  83         r = opl_match(ia->ia_iot, ioh, 0);
  84         bus_space_unmap(ia->ia_iot, ioh, OPL_SIZE);
  85         if (r != 0) {
  86                 ia->ia_nio = 1;
  87                 ia->ia_io[0].ir_size = OPL_SIZE;
  88
  89                 ia->ia_nirq = 0;
  90                 ia->ia_niomem = 0;
  91                 ia->ia_ndrq = 0;
  92         }
  93         return (r);
  94 }
  95
  96 void
  97 opl_isa_attach(device_t parent, device_t self, void *aux)
  98 {
  99         struct opl_softc *sc = device_private(self);
 100         struct isa_attach_args *ia = aux;
 101
 102         sc->mididev.dev = self;
 103         sc->iot = ia->ia_iot;
 104
 105         if (bus_space_map(sc->iot, ia->ia_io[0].ir_addr, OPL_SIZE,
 106             0, &sc->ioh)) {
 107                 aprint_error("opl_isa_attach: bus_space_map failed\n");
 108                 return;
 109         }
 110         sc->offs = 0;
 111
 112         opl_attach(sc);
 113 }