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/isa/atkbd_isa.c

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    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  * $FreeBSD$
   27  */
   28 
   29 #include "opt_kbd.h"
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/kernel.h>
   34 #include <sys/bus.h>
   35 
   36 #include <machine/bus.h>
   37 #include <machine/resource.h>
   38 #include <sys/rman.h>
   39 
   40 #include <sys/kbio.h>
   41 #include <dev/kbd/kbdreg.h>
   42 #include <dev/kbd/atkbdreg.h>
   43 #include <dev/kbd/atkbdcreg.h>
   44 
   45 #include <isa/isareg.h>
   46 #include <isa/isavar.h>
   47 
   48 typedef struct {
   49         struct resource *intr;
   50         void            *ih;
   51 } atkbd_softc_t;
   52 
   53 devclass_t      atkbd_devclass;
   54 
   55 static int      atkbdprobe(device_t dev);
   56 static int      atkbdattach(device_t dev);
   57 static int      atkbdresume(device_t dev);
   58 static void     atkbd_isa_intr(void *arg);
   59 
   60 static device_method_t atkbd_methods[] = {
   61         DEVMETHOD(device_probe,         atkbdprobe),
   62         DEVMETHOD(device_attach,        atkbdattach),
   63         DEVMETHOD(device_resume,        atkbdresume),
   64         { 0, 0 }
   65 };
   66 
   67 static driver_t atkbd_driver = {
   68         ATKBD_DRIVER_NAME,
   69         atkbd_methods,
   70         sizeof(atkbd_softc_t),
   71 };
   72 
   73 static int
   74 atkbdprobe(device_t dev)
   75 {
   76         uintptr_t irq;
   77         uintptr_t flags;
   78 
   79         device_set_desc(dev, "AT Keyboard");
   80 
   81         /* obtain parameters */
   82         BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
   83         BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
   84 
   85         /* probe the device */
   86         return atkbd_probe_unit(device_get_unit(dev),
   87                                 device_get_unit(device_get_parent(dev)),
   88                                 irq, flags);
   89 }
   90 
   91 static int
   92 atkbdattach(device_t dev)
   93 {
   94         atkbd_softc_t *sc;
   95         keyboard_t *kbd;
   96         uintptr_t irq;
   97         uintptr_t flags;
   98         int rid;
   99         int error;
  100 
  101         sc = device_get_softc(dev);
  102 
  103         BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
  104         BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
  105 
  106         error = atkbd_attach_unit(device_get_unit(dev), &kbd,
  107                                   device_get_unit(device_get_parent(dev)),
  108                                   irq, flags);
  109         if (error)
  110                 return error;
  111 
  112         /* declare our interrupt handler */
  113         rid = 0;
  114         sc->intr = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, irq, irq, 1,
  115                                       RF_SHAREABLE | RF_ACTIVE);
  116         BUS_SETUP_INTR(device_get_parent(dev), dev, sc->intr, INTR_TYPE_TTY,
  117                        atkbd_isa_intr, kbd, &sc->ih);
  118 
  119         return 0;
  120 }
  121 
  122 static int
  123 atkbdresume(device_t dev)
  124 {
  125         keyboard_t *kbd;
  126 
  127         kbd = kbd_get_keyboard(kbd_find_keyboard(ATKBD_DRIVER_NAME,
  128                                                  device_get_unit(dev)));
  129         if (kbd)
  130                 (*kbdsw[kbd->kb_index]->clear_state)(kbd);
  131         return 0;
  132 }
  133 
  134 static void
  135 atkbd_isa_intr(void *arg)
  136 {
  137         keyboard_t *kbd;
  138 
  139         kbd = (keyboard_t *)arg;
  140         (*kbdsw[kbd->kb_index]->intr)(kbd, NULL);
  141 }
  142 
  143 DRIVER_MODULE(atkbd, atkbdc, atkbd_driver, atkbd_devclass, 0, 0);

Cache object: a30472a979c4f8ba912625750c3e36f2


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