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ttycons.c revision 1.2 
      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 (at) 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/user.h>
     35 #include <sys/systm.h>
     36 #include <sys/device.h>
     37 
     38 #include <dev/cons.h>
     39 
     40 #include <machine/mainbus.h>
     41 
     42 static int	ttycons_match(device_t, cfdata_t, void *);
     43 static void	ttycons_attach(device_t, device_t, void *);
     44 
     45 void		ttycons_consinit(void);
     46 
     47 typedef struct ttycons_softc {
     48 	device_t	sc_dev;
     49 } ttycons_softc_t;
     50 
     51 dev_type_cngetc(ttycons_cngetc);
     52 dev_type_cnputc(ttycons_cnputc);
     53 dev_type_cnpollc(ttycons_cnpollc);
     54 
     55 static struct cnm_state ttycons_cnm_state;
     56 struct consdev ttycons_consdev = {
     57 	.cn_getc = ttycons_cngetc,
     58 	.cn_putc = ttycons_cnputc,
     59 	.cn_pollc = ttycons_cnpollc,
     60 };
     61 
     62 CFATTACH_DECL_NEW(ttycons, sizeof(ttycons_softc_t),
     63     ttycons_match, ttycons_attach, NULL, NULL);
     64 
     65 static int
     66 ttycons_match(device_t parent, cfdata_t match, void *opaque)
     67 {
     68 	struct thunkbus_attach_args *taa = opaque;
     69 
     70 	if (taa->taa_type != THUNKBUS_TYPE_TTYCONS)
     71 		return 0;
     72 
     73 	return 1;
     74 }
     75 
     76 static void
     77 ttycons_attach(device_t parent, device_t self, void *opaque)
     78 {
     79 	ttycons_softc_t *sc = device_private(self);
     80 
     81 	aprint_naive("\n");
     82 	aprint_normal(": console\n");
     83 
     84 	sc->sc_dev = self;
     85 }
     86 
     87 void
     88 ttycons_consinit(void)
     89 {
     90 	cn_tab = &ttycons_consdev;
     91 	cn_init_magic(&ttycons_cnm_state);
     92 	cn_set_magic("\047\001");
     93 }
     94 
     95 int
     96 ttycons_cngetc(dev_t dev)
     97 {
     98 	extern int getchar(void);
     99 	return getchar();
    100 }
    101 
    102 void
    103 ttycons_cnputc(dev_t dev, int c)
    104 {
    105 	extern void putchar(int);
    106 	putchar(c);
    107 }
    108 
    109 void
    110 ttycons_cnpollc(dev_t dev, int on)
    111 {
    112 }
    113