sys/dev/misc/atkbd/atkbd_isa.c

   1 /*-
   2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer as
  10  *    the first lines of this file unmodified.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/isa/atkbd_isa.c,v 1.7.2.3 2001/08/01 10:42:28 yokota Exp $
  27  * $DragonFly: src/sys/dev/misc/atkbd/atkbd_isa.c,v 1.6 2006/10/25 20:55:54 dillon Exp $
  28  */
  29
  30 #include "opt_kbd.h"
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34 #include <sys/kernel.h>
  35 #include <sys/bus.h>
  36 #include <sys/rman.h>
  37
  38 #include <sys/kbio.h>
  39 #include <dev/misc/kbd/kbdreg.h>
  40 #include <dev/misc/kbd/atkbdreg.h>
  41 #include <dev/misc/kbd/atkbdcreg.h>
  42
  43 #include <bus/isa/isareg.h>
  44 #include <bus/isa/isavar.h>
  45
  46 typedef struct {
  47         struct resource *intr;
  48         void            *ih;
  49 } atkbd_softc_t;
  50
  51 devclass_t      atkbd_devclass;
  52
  53 static int      atkbdprobe(device_t dev);
  54 static int      atkbdattach(device_t dev);
  55 static int      atkbdresume(device_t dev);
  56 static void     atkbd_isa_intr(void *arg);
  57
  58 static device_method_t atkbd_methods[] = {
  59         DEVMETHOD(device_probe,         atkbdprobe),
  60         DEVMETHOD(device_attach,        atkbdattach),
  61         DEVMETHOD(device_resume,        atkbdresume),
  62         { 0, 0 }
  63 };
  64
  65 static driver_t atkbd_driver = {
  66         ATKBD_DRIVER_NAME,
  67         atkbd_methods,
  68         sizeof(atkbd_softc_t),
  69 };
  70
  71 static int
  72 atkbdprobe(device_t dev)
  73 {
  74         uintptr_t irq;
  75         uintptr_t flags;
  76
  77         device_set_desc(dev, "AT Keyboard");
  78
  79         /* obtain parameters */
  80         BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
  81         BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
  82
  83         /* probe the device */
  84         return atkbd_probe_unit(device_get_unit(dev),
  85                                 device_get_unit(device_get_parent(dev)),
  86                                 irq, flags);
  87 }
  88
  89 static int
  90 atkbdattach(device_t dev)
  91 {
  92         atkbd_softc_t *sc;
  93         keyboard_t *kbd;
  94         uintptr_t irq;
  95         uintptr_t flags;
  96         int rid;
  97         int error;
  98
  99         sc = device_get_softc(dev);
 100
 101         BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
 102         BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
 103
 104         error = atkbd_attach_unit(device_get_unit(dev), &kbd,
 105                                   device_get_unit(device_get_parent(dev)),
 106                                   irq, flags);
 107         if (error)
 108                 return error;
 109
 110         /* declare our interrupt handler */
 111         rid = 0;
 112         sc->intr = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, irq, irq, 1,
 113                                       RF_SHAREABLE | RF_ACTIVE);
 114         BUS_SETUP_INTR(device_get_parent(dev), dev, sc->intr, 0,
 115                        atkbd_isa_intr, kbd, &sc->ih, NULL);
 116
 117         return 0;
 118 }
 119
 120 static int
 121 atkbdresume(device_t dev)
 122 {
 123         keyboard_t *kbd;
 124
 125         kbd = kbd_get_keyboard(kbd_find_keyboard(ATKBD_DRIVER_NAME,
 126                                                  device_get_unit(dev)));
 127         if (kbd)
 128                 kbd_clear_state(kbd);
 129         return 0;
 130 }
 131
 132 static void
 133 atkbd_isa_intr(void *arg)
 134 {
 135         keyboard_t *kbd;
 136
 137         kbd = (keyboard_t *)arg;
 138         kbd_intr(kbd, NULL);
 139 }
 140
 141 DRIVER_MODULE(atkbd, atkbdc, atkbd_driver, atkbd_devclass, 0, 0);