FreeBSD/Linux Kernel Cross Reference
sys/dev/hpc/hpcin.c

     /*      $NetBSD: hpcin.c,v 1.12 2008/04/28 20:23:48 martin Exp $        */
     
     /*-
      * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by UCHIYAMA Yasushi.
      *
     * 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.
     * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``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 FOUNDATION OR CONTRIBUTORS
     * 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.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: hpcin.c,v 1.12 2008/04/28 20:23:48 martin Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/device.h>
    
    #include <machine/config_hook.h>
    #include <sys/bus.h>
    
    #include <dev/hpc/hpciovar.h>
    #include <dev/hpc/hpciomanvar.h>
    
    #include "locators.h"
    
    int     hpcin_match(struct device *, struct cfdata *, void *);
    void    hpcin_attach(struct device *, struct device *, void *);
    int     hpcin_intr(void *);
    
    struct hpcin_softc {
            struct device sc_dev;
            struct hpcioman_attach_args sc_hma;
            hpcio_intr_handle_t sc_ih;
            config_call_tag sc_ct;
    };
    
    #define sc_hc           sc_hma.hma_hc
    #define sc_intr_mode    sc_hma.hma_intr_mode
    #define sc_type         sc_hma.hma_type
    #define sc_id           sc_hma.hma_id
    #define sc_port         sc_hma.hma_port
    #define sc_initvalue    sc_hma.hma_initvalue
    #define sc_on           sc_hma.hma_on
    #define sc_off          sc_hma.hma_off
    #define sc_connect      sc_hma.hma_connect
    
    CFATTACH_DECL(hpcin, sizeof(struct hpcin_softc),
        hpcin_match, hpcin_attach, NULL, NULL);
    
    int
    hpcin_match(struct device *parent, struct cfdata *cf, void *aux)
    {
            return (1);
    }
    
    void
    hpcin_attach(struct device *parent, struct device *self, void *aux)
    {
            struct hpcioman_attach_args *hma = aux;
            struct hpcin_softc *sc = device_private(self);
    
            if (hma->hma_hc == NULL ||
                hma->hma_type == HPCIOMANCF_EVTYPE_DEFAULT ||
                hma->hma_id == HPCIOMANCF_ID_DEFAULT ||
                hma->hma_port == HPCIOMANCF_PORT_DEFAULT) {
                    printf(": ignored\n");
                    return;
            }
            printf("\n");
    
            sc->sc_hma = *hma;      /* structure assignment */
    
            /* install interrupt handler */
            sc->sc_ih = hpcio_intr_establish(sc->sc_hc, sc->sc_port,
                sc->sc_intr_mode, hpcin_intr, sc);
            if (sc->sc_ih == NULL)
                    printf("hpcin: can't install interrupt handler\n");
    
           if (sc->sc_connect)
                   sc->sc_ct = config_connect(sc->sc_type, sc->sc_id);
   }
   
   int
   hpcin_intr(void *arg)
   {
           struct hpcin_softc *sc = arg;
           int on;
   
           on = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_on);
           if (sc->sc_connect) {
                   config_connected_call(sc->sc_ct, (void *)on);
           } else {
                   printf("%s: type=%d, id=%d\n", __func__,
                       sc->sc_type, sc->sc_id);
                   config_hook_call(sc->sc_type, sc->sc_id, (void *)on);
                   printf("done.\n");
           }
   
           return (0);
   }

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