sys/arch/usermode/dev/ttycons.c

   1 /* $NetBSD: ttycons.c,v 1.2 2009/10/21 16:06:59 snj Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: ttycons.c,v 1.2 2009/10/21 16:06:59 snj Exp $");
  31
  32 #include <sys/param.h>
  33 #include <sys/proc.h>
  34 #include <sys/systm.h>
  35 #include <sys/device.h>
  36
  37 #include <dev/cons.h>
  38
  39 #include <machine/mainbus.h>
  40
  41 static int      ttycons_match(device_t, cfdata_t, void *);
  42 static void     ttycons_attach(device_t, device_t, void *);
  43
  44 void            ttycons_consinit(void);
  45
  46 typedef struct ttycons_softc {
  47         device_t        sc_dev;
  48 } ttycons_softc_t;
  49
  50 dev_type_cngetc(ttycons_cngetc);
  51 dev_type_cnputc(ttycons_cnputc);
  52 dev_type_cnpollc(ttycons_cnpollc);
  53
  54 static struct cnm_state ttycons_cnm_state;
  55 struct consdev ttycons_consdev = {
  56         .cn_getc = ttycons_cngetc,
  57         .cn_putc = ttycons_cnputc,
  58         .cn_pollc = ttycons_cnpollc,
  59 };
  60
  61 CFATTACH_DECL_NEW(ttycons, sizeof(ttycons_softc_t),
  62     ttycons_match, ttycons_attach, NULL, NULL);
  63
  64 static int
  65 ttycons_match(device_t parent, cfdata_t match, void *opaque)
  66 {
  67         struct thunkbus_attach_args *taa = opaque;
  68
  69         if (taa->taa_type != THUNKBUS_TYPE_TTYCONS)
  70                 return 0;
  71
  72         return 1;
  73 }
  74
  75 static void
  76 ttycons_attach(device_t parent, device_t self, void *opaque)
  77 {
  78         ttycons_softc_t *sc = device_private(self);
  79
  80         aprint_naive("\n");
  81         aprint_normal(": console\n");
  82
  83         sc->sc_dev = self;
  84 }
  85
  86 void
  87 ttycons_consinit(void)
  88 {
  89         cn_tab = &ttycons_consdev;
  90         cn_init_magic(&ttycons_cnm_state);
  91         cn_set_magic("\047\001");
  92 }
  93
  94 int
  95 ttycons_cngetc(dev_t dev)
  96 {
  97         extern int getchar(void);
  98         return getchar();
  99 }
 100
 101 void
 102 ttycons_cnputc(dev_t dev, int c)
 103 {
 104         extern void putchar(int);
 105         putchar(c);
 106 }
 107
 108 void
 109 ttycons_cnpollc(dev_t dev, int on)
 110 {
 111 }