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cons.c revision 1.1 
      1 /*	$NetBSD: cons.c,v 1.1 1998/01/16 04:17:40 sakamoto 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. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Berkeley and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  * from: Utah Hdr: cons.c 1.7 92/02/28
     41  *
     42  *	@(#)cons.c	8.1 (Berkeley) 6/10/93
     43  */
     44 
     45 #include <sys/param.h>
     46 #include "cons.h"
     47 
     48 void becnprobe(), becninit(), becnputchar();
     49 int becngetchar(), becnscan();
     50 void siocnprobe(), siocninit(), siocnputchar();
     51 int siocngetchar(), siocnscan();
     52 
     53 struct consdev constab[] = {
     54 #ifdef CONS_VGA
     55 	{ becnprobe, becninit, becngetchar, becnputchar, becnscan },
     56 #endif
     57 #ifdef CONS_SERIAL
     58 	{ siocnprobe, siocninit, siocngetchar, siocnputchar, siocnscan },
     59 #endif
     60 	{ 0 }
     61 };
     62 
     63 struct consdev *cn_tab;
     64 int noconsole;
     65 
     66 cninit()
     67 {
     68 	register struct consdev *cp;
     69 
     70 	cn_tab = NULL;
     71 	noconsole = 1;
     72 	for (cp = constab; cp->cn_probe; cp++) {
     73 		(*cp->cn_probe)(cp);
     74 		if (cp->cn_pri > CN_DEAD &&
     75 		    (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri))
     76 			cn_tab = cp;
     77 	}
     78 	if (cn_tab) {
     79 		(*cn_tab->cn_init)(cn_tab);
     80 		noconsole = 0;
     81 	}
     82 }
     83 
     84 cngetc()
     85 {
     86 	if (cn_tab)
     87 		return ((*cn_tab->cn_getc)(cn_tab->cn_dev));
     88 	return (0);
     89 }
     90 
     91 cnputc(c)
     92 	int c;
     93 {
     94 	if (cn_tab)
     95 		(*cn_tab->cn_putc)(cn_tab->cn_dev, c);
     96 }
     97 
     98 cnscan()
     99 {
    100 	if (cn_tab)
    101 		return ((*cn_tab->cn_scan)(cn_tab->cn_dev));
    102 	return (0);
    103 }
    104 
    105 #ifdef CONS_VGA
    106 /*
    107  * BeBox default console
    108  */
    109 void
    110 becnprobe(cp)
    111 	struct consdev *cp;
    112 {
    113 	cp->cn_pri = CN_NORMAL;
    114 }
    115 
    116 void
    117 becninit(cp)
    118 	struct consdev *cp;
    119 {
    120 #define PCI_BASE 0xC0000000
    121 	unsigned char *display_memory = (unsigned char *)PCI_BASE;
    122 
    123 	vga_init(display_memory);
    124 	CRT_init(display_memory);
    125 	kbdreset();
    126 }
    127 
    128 becngetchar(cp)
    129 	struct consdev *cp;
    130 {
    131 	return (CRT_getc());
    132 }
    133 
    134 void
    135 becnputchar(cp, c)
    136 	struct consdev *cp;
    137 	register int c;
    138 {
    139 	CRT_putc(c);
    140 }
    141 
    142 becnscan(cp)
    143 	struct consdev *cp;
    144 {
    145 	return (kbd(1));
    146 }
    147 #endif /* CONS_VGA */
    148 
    149 #ifdef CONS_SERIAL
    150 /*
    151  * BeBox serial console
    152  */
    153 void
    154 siocnprobe(cp)
    155 	struct consdev *cp;
    156 {
    157 	cp->cn_pri = CN_REMOTE;
    158 }
    159 
    160 #include "ns16550.h"
    161 struct NS16550 *sio;
    162 
    163 void
    164 siocninit(cp)
    165 	struct consdev *cp;
    166 {
    167 	sio = (struct NS16550 *)NS16550_init();
    168 }
    169 
    170 siocngetchar(cp)
    171 	struct consdev *cp;
    172 {
    173 	return (NS16550_getc(sio));
    174 }
    175 
    176 void
    177 siocnputchar(cp, c)
    178 	struct consdev *cp;
    179 	register int c;
    180 {
    181 	if (c == '\n')
    182 		NS16550_putc(sio, '\r');
    183 	NS16550_putc(sio, c);
    184 }
    185 
    186 siocnscan(cp)
    187 	struct consdev *cp;
    188 {
    189 	return (NS16550_scankbd(sio));
    190 }
    191 #endif /* CONS_SERIAL */
    192