sys/dev/hpc/hpcin.c

   1 /*      $NetBSD: hpcin.c,v 1.13 2009/05/12 12:13:49 cegger 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 1.13 2009/05/12 12:13:49 cegger 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 device sc_dev;
  53         struct hpcioman_attach_args sc_hma;
  54         hpcio_intr_handle_t sc_ih;
  55         config_call_tag sc_ct;
  56 };
  57
  58 #define sc_hc           sc_hma.hma_hc
  59 #define sc_intr_mode    sc_hma.hma_intr_mode
  60 #define sc_type         sc_hma.hma_type
  61 #define sc_id           sc_hma.hma_id
  62 #define sc_port         sc_hma.hma_port
  63 #define sc_initvalue    sc_hma.hma_initvalue
  64 #define sc_on           sc_hma.hma_on
  65 #define sc_off          sc_hma.hma_off
  66 #define sc_connect      sc_hma.hma_connect
  67
  68 CFATTACH_DECL(hpcin, sizeof(struct hpcin_softc),
  69     hpcin_match, hpcin_attach, NULL, NULL);
  70
  71 int
  72 hpcin_match(device_t parent, cfdata_t cf, void *aux)
  73 {
  74         return (1);
  75 }
  76
  77 void
  78 hpcin_attach(device_t parent, device_t self, void *aux)
  79 {
  80         struct hpcioman_attach_args *hma = aux;
  81         struct hpcin_softc *sc = device_private(self);
  82
  83         if (hma->hma_hc == NULL ||
  84             hma->hma_type == HPCIOMANCF_EVTYPE_DEFAULT ||
  85             hma->hma_id == HPCIOMANCF_ID_DEFAULT ||
  86             hma->hma_port == HPCIOMANCF_PORT_DEFAULT) {
  87                 printf(": ignored\n");
  88                 return;
  89         }
  90         printf("\n");
  91
  92         sc->sc_hma = *hma;      /* structure assignment */
  93
  94         /* install interrupt handler */
  95         sc->sc_ih = hpcio_intr_establish(sc->sc_hc, sc->sc_port,
  96             sc->sc_intr_mode, hpcin_intr, sc);
  97         if (sc->sc_ih == NULL)
  98                 printf("hpcin: can't install interrupt handler\n");
  99
 100         if (sc->sc_connect)
 101                 sc->sc_ct = config_connect(sc->sc_type, sc->sc_id);
 102 }
 103
 104 int
 105 hpcin_intr(void *arg)
 106 {
 107         struct hpcin_softc *sc = arg;
 108         int on;
 109
 110         on = (hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_on);
 111         if (sc->sc_connect) {
 112                 config_connected_call(sc->sc_ct, (void *)on);
 113         } else {
 114                 printf("%s: type=%d, id=%d\n", __func__,
 115                     sc->sc_type, sc->sc_id);
 116                 config_hook_call(sc->sc_type, sc->sc_id, (void *)on);
 117                 printf("done.\n");
 118         }
 119
 120         return (0);
 121 }