1/*	$NetBSD: cons.c,v 1.6 2005/12/11 12:17:19 christos Exp $	*/
2
3/*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1990, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah Hdr: cons.c 1.7 92/02/28
37 *
38 *	@(#)cons.c	8.1 (Berkeley) 6/10/93
39 */
40
41#include <sys/param.h>
42#include <dev/cons.h>
43
44#include <hp300/stand/common/consdefs.h>
45#include <hp300/stand/common/samachdep.h>
46
47struct consdev constab[] = {
48#ifdef ITECONSOLE
49	{ iteprobe,	iteinit,	itegetchar,	iteputchar },
50#endif
51#ifdef DCACONSOLE
52	{ dcaprobe,	dcainit,	dcagetchar,	dcaputchar },
53#endif
54#ifdef APCICONSOLE
55	{ apciprobe,	apciinit,	apcigetchar,	apciputchar },
56#endif
57#ifdef DCMCONSOLE
58	{ dcmprobe,	dcminit,	dcmgetchar,	dcmputchar },
59#endif
60	{ 0 },
61};
62
63int	curcons_scode;	/* select code of device currently being probed */
64int	cons_scode;	/* final select code of console device */
65
66struct consdev *cn_tab;
67int noconsole;
68
69void
70cninit(void)
71{
72	struct consdev *cp;
73
74	cn_tab = NULL;
75	noconsole = 1;
76	cons_scode = 256;	/* larger than last valid select code */
77	for (cp = constab; cp->cn_probe; cp++) {
78		(*cp->cn_probe)(cp);
79		if (cp->cn_pri > CN_DEAD &&
80		    (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri)) {
81			cn_tab = cp;
82			cons_scode = curcons_scode;
83		}
84	}
85	if (cn_tab) {
86		(*cn_tab->cn_init)(cn_tab);
87		noconsole = 0;
88#if 0
89		printf("console: ");
90		switch (cons_scode) {
91		case -2:
92			printf("apci\n");
93			break;
94		case -1:
95			printf("internal grf\n");
96			break;
97		default:
98			printf("scode %d\n", cons_scode);
99		}
100#endif
101	}
102}
103
104int
105cngetc(void)
106{
107
108	/* Note: the dev_t arguments are not used! */
109	if (cn_tab)
110		return (*cn_tab->cn_getc)(0);
111	return 0;
112}
113
114int
115cnputc(int c)
116{
117
118	/* Note: the dev_t arguments are not used! */
119	if (userom)
120		romputchar(c);
121	else if (cn_tab)
122		(*cn_tab->cn_putc)(0, c);
123
124	return 0;
125}
126