sys/dev/isa/mpu_isa.c

   1 /*      $NetBSD: mpu_isa.c,v 1.19 2008/04/01 13:35:39 xtraeme 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: mpu_isa.c,v 1.19 2008/04/01 13:35:39 xtraeme 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/proc.h>
  41 #include <sys/conf.h>
  42 #include <sys/midiio.h>
  43
  44 #include <sys/bus.h>
  45
  46 #include <dev/midi_if.h>
  47
  48 #include <dev/isa/isavar.h>
  49 #include <dev/ic/mpuvar.h>
  50
  51 struct mpu_isa_softc {
  52         device_t sc_dev;
  53         struct mpu_softc sc_mpu;        /* generic part */
  54         void    *sc_ih;                 /* ISA interrupt handler */
  55 };
  56
  57 static int      mpu_isa_match(device_t, cfdata_t, void *);
  58 static void     mpu_isa_attach(device_t, device_t, void *);
  59
  60 CFATTACH_DECL_NEW(mpu_isa, sizeof(struct mpu_isa_softc),
  61     mpu_isa_match, mpu_isa_attach, NULL, NULL);
  62
  63 static int
  64 mpu_isa_match(device_t parent, cfdata_t match, void *aux)
  65 {
  66         struct isa_attach_args *ia = aux;
  67         struct mpu_isa_softc sc;
  68         int r;
  69
  70         if (ia->ia_nio < 1)
  71                 return 0;
  72         if (ia->ia_nirq < 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         if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
  81                 return 0;
  82
  83         memset(&sc, 0, sizeof sc);
  84         sc.sc_mpu.iot = ia->ia_iot;
  85         if (bus_space_map(sc.sc_mpu.iot, ia->ia_io[0].ir_addr, MPU401_NPORT, 0,
  86                           &sc.sc_mpu.ioh))
  87                 return 0;
  88         r = mpu_find(&sc.sc_mpu);
  89         bus_space_unmap(sc.sc_mpu.iot, sc.sc_mpu.ioh, MPU401_NPORT);
  90         if (r) {
  91                 ia->ia_nio = 1;
  92                 ia->ia_io[0].ir_size = MPU401_NPORT;
  93
  94                 ia->ia_nirq = 1;
  95
  96                 ia->ia_niomem = 0;
  97                 ia->ia_ndrq = 0;
  98         }
  99         return r;
 100 }
 101
 102 static void
 103 mpu_isa_attach(device_t parent, device_t self, void *aux)
 104 {
 105         struct mpu_isa_softc *sc = device_private(self);
 106         struct isa_attach_args *ia = aux;
 107
 108         aprint_normal("\n");
 109
 110         if (bus_space_map(sc->sc_mpu.iot, ia->ia_io[0].ir_addr, MPU401_NPORT,
 111             0, &sc->sc_mpu.ioh)) {
 112                 printf("mpu_isa_attach: bus_space_map failed\n");
 113                 return;
 114         }
 115
 116         sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
 117             IST_EDGE, IPL_AUDIO, mpu_intr, &sc->sc_mpu);
 118
 119         sc->sc_mpu.model = "Roland MPU-401 MIDI UART";
 120         sc->sc_dev = self;
 121         mpu_attach(&sc->sc_mpu);
 122 }