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ttycons.c revision 1.1.6.2 
      1 /* $NetBSD: ttycons.c,v 1.1.6.2 2008/01/21 09:39:45 yamt 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  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *        This product includes software developed by Jared D. McNeill.
     18  * 4. Neither the name of The NetBSD Foundation nor the names of its
     19  *    contributors may be used to endorse or promote products derived
     20  *    from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     32  * POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __KERNEL_RCSID(0, "$NetBSD: ttycons.c,v 1.1.6.2 2008/01/21 09:39:45 yamt Exp $");
     37 
     38 #include <sys/param.h>
     39 #include <sys/proc.h>
     40 #include <sys/user.h>
     41 #include <sys/systm.h>
     42 #include <sys/device.h>
     43 
     44 #include <dev/cons.h>
     45 
     46 #include <machine/mainbus.h>
     47 
     48 static int	ttycons_match(device_t, cfdata_t, void *);
     49 static void	ttycons_attach(device_t, device_t, void *);
     50 
     51 void		ttycons_consinit(void);
     52 
     53 typedef struct ttycons_softc {
     54 	device_t	sc_dev;
     55 } ttycons_softc_t;
     56 
     57 dev_type_cngetc(ttycons_cngetc);
     58 dev_type_cnputc(ttycons_cnputc);
     59 dev_type_cnpollc(ttycons_cnpollc);
     60 
     61 static struct cnm_state ttycons_cnm_state;
     62 struct consdev ttycons_consdev = {
     63 	.cn_getc = ttycons_cngetc,
     64 	.cn_putc = ttycons_cnputc,
     65 	.cn_pollc = ttycons_cnpollc,
     66 };
     67 
     68 CFATTACH_DECL_NEW(ttycons, sizeof(ttycons_softc_t),
     69     ttycons_match, ttycons_attach, NULL, NULL);
     70 
     71 static int
     72 ttycons_match(device_t parent, cfdata_t match, void *opaque)
     73 {
     74 	struct thunkbus_attach_args *taa = opaque;
     75 
     76 	if (taa->taa_type != THUNKBUS_TYPE_TTYCONS)
     77 		return 0;
     78 
     79 	return 1;
     80 }
     81 
     82 static void
     83 ttycons_attach(device_t parent, device_t self, void *opaque)
     84 {
     85 	ttycons_softc_t *sc = device_private(self);
     86 
     87 	aprint_naive("\n");
     88 	aprint_normal(": console\n");
     89 
     90 	sc->sc_dev = self;
     91 }
     92 
     93 void
     94 ttycons_consinit(void)
     95 {
     96 	cn_tab = &ttycons_consdev;
     97 	cn_init_magic(&ttycons_cnm_state);
     98 	cn_set_magic("\047\001");
     99 }
    100 
    101 int
    102 ttycons_cngetc(dev_t dev)
    103 {
    104 	extern int getchar(void);
    105 	return getchar();
    106 }
    107 
    108 void
    109 ttycons_cnputc(dev_t dev, int c)
    110 {
    111 	extern void putchar(int);
    112 	putchar(c);
    113 }
    114 
    115 void
    116 ttycons_cnpollc(dev_t dev, int on)
    117 {
    118 }
    119