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ttycons.c revision 1.3 
      1 /* $NetBSD: ttycons.c,v 1.3 2009/11/27 03:23:14 rmind 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 1.3 2009/11/27 03:23:14 rmind 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 }
    112