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hpcin.c revision 1.6 
      1 /*	$NetBSD: hpcin.c,v 1.6 2002/09/27 20:37:57 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: hpcin.c,v 1.6 2002/09/27 20:37:57 thorpej Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/device.h>
     45 
     46 #include <machine/config_hook.h>
     47 #include <machine/bus.h>
     48 
     49 #include <dev/hpc/hpciovar.h>
     50 #include <dev/hpc/hpciomanvar.h>
     51 
     52 #include "locators.h"
     53 
     54 int	hpcin_match(struct device *, struct cfdata *, void *);
     55 void	hpcin_attach(struct device *, struct device *, void *);
     56 int	hpcin_intr(void *);
     57 
     58 struct hpcin_softc {
     59 	struct device sc_dev;
     60 	struct hpcioman_attach_args sc_hma;
     61 	hpcio_intr_handle_t sc_ih;
     62 	config_call_tag sc_ct;
     63 };
     64 
     65 #define sc_hc		sc_hma.hma_hc
     66 #define sc_intr_mode	sc_hma.hma_intr_mode
     67 #define sc_type		sc_hma.hma_type
     68 #define sc_id		sc_hma.hma_id
     69 #define sc_port		sc_hma.hma_port
     70 #define sc_initvalue	sc_hma.hma_initvalue
     71 #define sc_on		sc_hma.hma_on
     72 #define sc_off		sc_hma.hma_off
     73 #define sc_connect	sc_hma.hma_connect
     74 
     75 const struct cfattach hpcin_ca = {
     76 	sizeof(struct hpcin_softc), hpcin_match, hpcin_attach
     77 };
     78 
     79 int
     80 hpcin_match(struct device *parent, struct cfdata *cf, void *aux)
     81 {
     82 	return (1);
     83 }
     84 
     85 void
     86 hpcin_attach(struct device *parent, struct device *self, void *aux)
     87 {
     88 	struct hpcioman_attach_args *hma = aux;
     89 	struct hpcin_softc *sc = (void *)self;
     90 
     91 	if (hma->hma_hc == NULL ||
     92 	    hma->hma_type == HPCIOMANCF_EVTYPE_DEFAULT ||
     93 	    hma->hma_id == HPCIOMANCF_ID_DEFAULT ||
     94 	    hma->hma_port == HPCIOMANCF_PORT_DEFAULT) {
     95 		printf(": ignored\n");
     96 		return;
     97 	}
     98 	printf("\n");
     99 
    100 	sc->sc_hma = *hma;	/* structure assignment */
    101 
    102 	/* install interrupt handler */
    103 	sc->sc_ih = hpcio_intr_establish(sc->sc_hc, sc->sc_port,
    104 	    sc->sc_intr_mode, hpcin_intr, sc);
    105 	if (sc->sc_ih == NULL)
    106 		printf("hpcin: can't install interrupt handler\n");
    107 
    108 	if (sc->sc_connect)
    109 		sc->sc_ct = config_connect(sc->sc_type, sc->sc_id);
    110 }
    111 
    112 int
    113 hpcin_intr(void *arg)
    114 {
    115 	struct hpcin_softc *sc = arg;
    116 	int on;
    117 
    118 	on = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_on);
    119 	if (sc->sc_connect) {
    120 		config_connected_call(sc->sc_ct, (void *)on);
    121 	} else {
    122 		printf("%s: type=%d, id=%d\n", __FUNCTION__,
    123 		    sc->sc_type, sc->sc_id);
    124 		config_hook_call(sc->sc_type, sc->sc_id, (void *)on);
    125 		printf("done.\n");
    126 	}
    127 
    128 	return (0);
    129 }
    130