sys/arch/luna68k/dev/sio.c

   1 /* $NetBSD: sio.c,v 1.7 2009/03/14 15:36:08 dsl Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Tohru Nishimura.
   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>                  /* RCS ID & Copyright macro defns */
  33
  34 __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.7 2009/03/14 15:36:08 dsl Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/device.h>
  39
  40 #include <machine/cpu.h>
  41 #include <machine/autoconf.h>
  42
  43 #include <luna68k/luna68k/isr.h>
  44 #include <luna68k/dev/siovar.h>
  45
  46 static int  sio_match(struct device *, struct cfdata *, void *);
  47 static void sio_attach(struct device *, struct device *, void *);
  48 static int  sio_print(void *, const char *);
  49
  50 CFATTACH_DECL(sio, sizeof(struct sio_softc),
  51     sio_match, sio_attach, NULL, NULL);
  52 extern struct cfdriver sio_cd;
  53
  54 static void nullintr(int);
  55 static int xsiointr(void *);
  56
  57 static int
  58 sio_match(struct device *parent, struct cfdata *cf, void *aux)
  59 {
  60         struct mainbus_attach_args *ma = aux;
  61
  62         if (strcmp(ma->ma_name, sio_cd.cd_name))
  63                 return 0;
  64         if (badaddr((void *)ma->ma_addr, 4))
  65                 return 0;
  66         return 1;
  67 }
  68
  69 static void
  70 sio_attach(struct device *parent, struct device *self, void *aux)
  71 {
  72         struct sio_softc *sc = (void *)self;
  73         struct mainbus_attach_args *ma = aux;
  74         struct sio_attach_args sio_args;
  75         int channel;
  76         extern int sysconsole; /* console: 0 for ttya, 1 for desktop */
  77
  78         printf(": 7201a\n");
  79
  80         sc->scp_ctl = (void *)ma->ma_addr;
  81         sc->scp_intr[0] = sc->scp_intr[1] = nullintr;
  82         for (channel = 0; channel < 2; channel++) {
  83                 sio_args.channel = channel;
  84                 sio_args.hwflags = (channel == sysconsole);
  85                 config_found(self, (void *)&sio_args, sio_print);
  86         }
  87
  88         isrlink_autovec(xsiointr, sc, ma->ma_ilvl, ISRPRI_TTYNOBUF);
  89 }
  90
  91 static int
  92 sio_print(void *aux, const char *name)
  93 {
  94         struct sio_attach_args *args = aux;
  95
  96         if (name != NULL)
  97                 aprint_normal("%s: ", name);
  98
  99         if (args->channel != -1)
 100                 aprint_normal(" channel %d", args->channel);
 101
 102         return UNCONF;
 103 }
 104
 105 static int
 106 xsiointr(void *arg)
 107 {
 108         struct sio_softc *sc = arg;
 109
 110         (*sc->scp_intr[0])(0);  /* 0: ttya system serial port */
 111         (*sc->scp_intr[1])(1);  /* 1: keyboard and mouse */
 112         return 1;
 113 }
 114
 115 static void nullintr(v) int v; { }