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      1 /*	$NetBSD: hpcin.c,v 1.15 2012/10/27 17:18:17 chs 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: hpcin.c,v 1.15 2012/10/27 17:18:17 chs Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/device.h>
     38 
     39 #include <machine/config_hook.h>
     40 #include <sys/bus.h>
     41 
     42 #include <dev/hpc/hpciovar.h>
     43 #include <dev/hpc/hpciomanvar.h>
     44 
     45 #include "locators.h"
     46 
     47 int	hpcin_match(device_t, cfdata_t, void *);
     48 void	hpcin_attach(device_t, device_t, void *);
     49 int	hpcin_intr(void *);
     50 
     51 struct hpcin_softc {
     52 	struct hpcioman_attach_args sc_hma;
     53 	hpcio_intr_handle_t sc_ih;
     54 	config_call_tag sc_ct;
     55 };
     56 
     57 #define sc_hc		sc_hma.hma_hc
     58 #define sc_intr_mode	sc_hma.hma_intr_mode
     59 #define sc_type		sc_hma.hma_type
     60 #define sc_id		sc_hma.hma_id
     61 #define sc_port		sc_hma.hma_port
     62 #define sc_initvalue	sc_hma.hma_initvalue
     63 #define sc_on		sc_hma.hma_on
     64 #define sc_off		sc_hma.hma_off
     65 #define sc_connect	sc_hma.hma_connect
     66 
     67 CFATTACH_DECL_NEW(hpcin, sizeof(struct hpcin_softc),
     68     hpcin_match, hpcin_attach, NULL, NULL);
     69 
     70 int
     71 hpcin_match(device_t parent, cfdata_t cf, void *aux)
     72 {
     73 	return (1);
     74 }
     75 
     76 void
     77 hpcin_attach(device_t parent, device_t self, void *aux)
     78 {
     79 	struct hpcioman_attach_args *hma = aux;
     80 	struct hpcin_softc *sc = device_private(self);
     81 
     82 	if (hma->hma_hc == NULL ||
     83 	    hma->hma_type == HPCIOMANCF_EVTYPE_DEFAULT ||
     84 	    hma->hma_id == HPCIOMANCF_ID_DEFAULT ||
     85 	    hma->hma_port == HPCIOMANCF_PORT_DEFAULT) {
     86 		printf(": ignored\n");
     87 		return;
     88 	}
     89 	printf("\n");
     90 
     91 	sc->sc_hma = *hma;	/* structure assignment */
     92 
     93 	/* install interrupt handler */
     94 	sc->sc_ih = hpcio_intr_establish(sc->sc_hc, sc->sc_port,
     95 	    sc->sc_intr_mode, hpcin_intr, sc);
     96 	if (sc->sc_ih == NULL)
     97 		printf("hpcin: can't install interrupt handler\n");
     98 
     99 	if (sc->sc_connect)
    100 		sc->sc_ct = config_connect(sc->sc_type, sc->sc_id);
    101 }
    102 
    103 int
    104 hpcin_intr(void *arg)
    105 {
    106 	struct hpcin_softc *sc = arg;
    107 	int on;
    108 
    109 	on = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_on);
    110 	if (sc->sc_connect) {
    111 		config_connected_call(sc->sc_ct, (void *)on);
    112 	} else {
    113 		printf("%s: type=%d, id=%d\n", __func__,
    114 		    sc->sc_type, sc->sc_id);
    115 		config_hook_call(sc->sc_type, sc->sc_id, (void *)on);
    116 		printf("done.\n");
    117 	}
    118 
    119 	return (0);
    120 }
    121