FreeBSD/Linux Kernel Cross Reference
sys/dev/misc/atkbd/atkbd_isa.c

     /*-
      * (MPSAFE)
      *
      * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer as
     *    the first lines of this file unmodified.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: src/sys/isa/atkbd_isa.c,v 1.7.2.3 2001/08/01 10:42:28 yokota Exp $
     */
    
    #include "opt_kbd.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/bus.h>
    #include <sys/rman.h>
    #include <sys/thread.h>
    #include <sys/machintr.h>
    
    #include <sys/kbio.h>
    #include <dev/misc/kbd/kbdreg.h>
    #include <dev/misc/kbd/atkbdreg.h>
    #include <dev/misc/kbd/atkbdcreg.h>
    
    #include <bus/isa/isareg.h>
    #include <bus/isa/isavar.h>
    
    #if 0
    #define lwkt_gettoken(x)
    #define lwkt_reltoken(x)
    #endif
    
    typedef struct {
            struct resource *intr;
            void            *ih;
    } atkbd_softc_t;
    
    devclass_t      atkbd_devclass;
    
    static int      atkbdprobe(device_t dev);
    static int      atkbdattach(device_t dev);
    static int      atkbdresume(device_t dev);
    static void     atkbd_isa_intr(void *arg);
    
    static device_method_t atkbd_methods[] = {
            DEVMETHOD(device_probe,         atkbdprobe),
            DEVMETHOD(device_attach,        atkbdattach),
            DEVMETHOD(device_resume,        atkbdresume),
            DEVMETHOD_END
    };
    
    static driver_t atkbd_driver = {
            ATKBD_DRIVER_NAME,
            atkbd_methods,
            sizeof(atkbd_softc_t),
    };
    
    static int
    atkbdprobe(device_t dev)
    {
            uintptr_t irq;
            uintptr_t flags;
    
            device_set_desc(dev, "AT Keyboard");
    
            /* obtain parameters */
            BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
            BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
    
            /* probe the device */
            return atkbd_probe_unit(device_get_unit(dev),
                                    device_get_unit(device_get_parent(dev)),
                                    irq, flags);
    }
    
    static int
    atkbdattach(device_t dev)
    {
           atkbd_softc_t *sc;
           keyboard_t *kbd;
           uintptr_t irq;
           uintptr_t flags;
           int rid;
           int error;
   
           sc = device_get_softc(dev);
   
           BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
           BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
   
           error = atkbd_attach_unit(device_get_unit(dev), &kbd,
                                     device_get_unit(device_get_parent(dev)),
                                     irq, flags);
           if (error)
                   return error;
   
           /* declare our interrupt handler */
           rid = 0;
           sc->intr = bus_alloc_legacy_irq_resource(dev, &rid, irq, RF_ACTIVE);
           BUS_SETUP_INTR(device_get_parent(dev), dev, sc->intr, INTR_MPSAFE,
                          atkbd_isa_intr, kbd, &sc->ih, NULL, NULL);
   
           return 0;
   }
   
   static int
   atkbdresume(device_t dev)
   {
           atkbd_softc_t *sc;
           keyboard_t *kbd;
           int args[2];
   
           lwkt_gettoken(&tty_token);
           sc = device_get_softc(dev);
           kbd = kbd_get_keyboard(kbd_find_keyboard(ATKBD_DRIVER_NAME,
                                                    device_get_unit(dev)));
           if (kbd) {
                   kbd->kb_flags &= ~KB_INITIALIZED;
                   args[0] = device_get_unit(device_get_parent(dev));
                   args[1] = rman_get_start(sc->intr);
                   sw_init(kbdsw[kbd->kb_index], device_get_unit(dev), &kbd,
                                                 args, device_get_flags(dev));
                   kbd_clear_state(kbd);
   
           }
           lwkt_reltoken(&tty_token);
           return 0;
   }
   
   static void
   atkbd_isa_intr(void *arg)
   {
           keyboard_t *kbd;
   
           lwkt_gettoken(&tty_token);
           kbd = (keyboard_t *)arg;
           kbd_intr(kbd, NULL);
           lwkt_reltoken(&tty_token);
   }
   
   DRIVER_MODULE(atkbd, atkbdc, atkbd_driver, atkbd_devclass, NULL, NULL);

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