atkbd_atkbdc.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 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/6.0/sys/dev/atkbdc/atkbd_atkbdc.c 147271 2005-06-10 20:56:38Z marius $");
   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/module.h>
   36 #include <sys/bus.h>
   37 
   38 #include <machine/bus.h>
   39 #include <machine/resource.h>
   40 #include <sys/rman.h>
   41 
   42 #include <sys/kbio.h>
   43 #include <dev/kbd/kbdreg.h>
   44 #include <dev/atkbdc/atkbdreg.h>
   45 #include <dev/atkbdc/atkbdcreg.h>
   46 
   47 typedef struct {
   48         struct resource *intr;
   49         void            *ih;
   50 } atkbd_softc_t;
   51 
   52 static devclass_t       atkbd_devclass;
   53 
   54 static void     atkbdidentify(driver_t *driver, device_t dev);
   55 static int      atkbdprobe(device_t dev);
   56 static int      atkbdattach(device_t dev);
   57 static int      atkbdresume(device_t dev);
   58 static void     atkbdintr(void *arg);
   59 
   60 static device_method_t atkbd_methods[] = {
   61         DEVMETHOD(device_identify,      atkbdidentify),
   62         DEVMETHOD(device_probe,         atkbdprobe),
   63         DEVMETHOD(device_attach,        atkbdattach),
   64         DEVMETHOD(device_resume,        atkbdresume),
   65         { 0, 0 }
   66 };
   67 
   68 static driver_t atkbd_driver = {
   69         ATKBD_DRIVER_NAME,
   70         atkbd_methods,
   71         sizeof(atkbd_softc_t),
   72 };
   73 
   74 static void
   75 atkbdidentify(driver_t *driver, device_t parent)
   76 {
   77 
   78         /* always add at least one child */
   79         BUS_ADD_CHILD(parent, KBDC_RID_KBD, driver->name, device_get_unit(parent));
   80 }
   81 
   82 static int
   83 atkbdprobe(device_t dev)
   84 {
   85         struct resource *res;
   86         u_long irq;
   87         int flags;
   88         int rid;
   89 
   90         device_set_desc(dev, "AT Keyboard");
   91 
   92         /* obtain parameters */
   93         flags = device_get_flags(dev);
   94 
   95         /* see if IRQ is available */
   96         rid = KBDC_RID_KBD;
   97         res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
   98                                      RF_SHAREABLE | RF_ACTIVE);
   99         if (res == NULL) {
  100                 if (bootverbose)
  101                         device_printf(dev, "unable to allocate IRQ\n");
  102                 return ENXIO;
  103         }
  104         irq = rman_get_start(res);
  105         bus_release_resource(dev, SYS_RES_IRQ, rid, res);
  106 
  107         /* probe the device */
  108         return atkbd_probe_unit(device_get_unit(dev),
  109                                 device_get_unit(device_get_parent(dev)),
  110                                 irq, flags);
  111 }
  112 
  113 static int
  114 atkbdattach(device_t dev)
  115 {
  116         atkbd_softc_t *sc;
  117         keyboard_t *kbd;
  118         u_long irq;
  119         int flags;
  120         int rid;
  121         int error;
  122 
  123         sc = device_get_softc(dev);
  124 
  125         rid = KBDC_RID_KBD;
  126         irq = bus_get_resource_start(dev, SYS_RES_IRQ, rid);
  127         flags = device_get_flags(dev);
  128         error = atkbd_attach_unit(device_get_unit(dev), &kbd,
  129                                   device_get_unit(device_get_parent(dev)),
  130                                   irq, flags);
  131         if (error)
  132                 return error;
  133 
  134         /* declare our interrupt handler */
  135         sc->intr = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
  136                                           RF_SHAREABLE | RF_ACTIVE);
  137         if (sc->intr == NULL)
  138                 return ENXIO;
  139         error = bus_setup_intr(dev, sc->intr, INTR_TYPE_TTY, atkbdintr,
  140                                kbd, &sc->ih);
  141         if (error)
  142                 bus_release_resource(dev, SYS_RES_IRQ, rid, sc->intr);
  143 
  144         return error;
  145 }
  146 
  147 static int
  148 atkbdresume(device_t dev)
  149 {
  150         atkbd_softc_t *sc;
  151         keyboard_t *kbd;
  152         int args[2];
  153 
  154         sc = device_get_softc(dev);
  155         kbd = kbd_get_keyboard(kbd_find_keyboard(ATKBD_DRIVER_NAME,
  156                                                  device_get_unit(dev)));
  157         if (kbd) {
  158                 kbd->kb_flags &= ~KB_INITIALIZED;
  159                 args[0] = device_get_unit(device_get_parent(dev));
  160                 args[1] = rman_get_start(sc->intr);
  161                 (*kbdsw[kbd->kb_index]->init)(device_get_unit(dev), &kbd,
  162                                               args, device_get_flags(dev));
  163                 (*kbdsw[kbd->kb_index]->clear_state)(kbd);
  164         }
  165         return 0;
  166 }
  167 
  168 static void
  169 atkbdintr(void *arg)
  170 {
  171         keyboard_t *kbd;
  172 
  173         kbd = (keyboard_t *)arg;
  174         (*kbdsw[kbd->kb_index]->intr)(kbd, NULL);
  175 }
  176 
  177 DRIVER_MODULE(atkbd, atkbdc, atkbd_driver, atkbd_devclass, 0, 0);

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FreeBSD/Linux Kernel Cross Reference sys/dev/atkbdc/atkbd_atkbdc.c

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sys/dev/atkbdc/atkbd_atkbdc.c