1/* $NetBSD: cons.c,v 1.2 2008/03/01 05:21:50 tsutsui 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 <lib/libsa/stand.h> 42 43#include "boot.h" 44#include "cons.h" 45 46#ifdef CONS_SERIAL 47void siocnprobe(struct consdev *); 48void siocninit(struct consdev *); 49void siocnputchar(void *, int); 50int siocngetchar(void *); 51int siocnscan(void *); 52# include "ns16550.h" 53# ifndef COMPORT 54# define COMPORT COM1 55# endif 56# ifndef COMSPEED 57# define COMSPEED 9600 58# endif 59#endif 60 61struct consdev constab[] = { 62#ifdef CONS_SERIAL 63 { "com", COMPORT, COMSPEED, 64 siocnprobe, siocninit, siocngetchar, siocnputchar, siocnscan }, 65#endif 66 { 0 } 67}; 68 69struct consdev *cn_tab; 70 71char * 72cninit(int *addr, int *speed) 73{ 74 register struct consdev *cp; 75 76 cn_tab = NULL; 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 } 83 if (cn_tab) { 84 (*cn_tab->cn_init)(cn_tab); 85 *addr = cn_tab->address; 86 *speed = cn_tab->speed; 87 return (cn_tab->cn_name); 88 } 89 90 return (NULL); 91} 92 93int 94cngetc(void) 95{ 96 97 if (cn_tab) 98 return ((*cn_tab->cn_getc)(cn_tab->cn_dev)); 99 return (0); 100} 101 102void 103cnputc(int c) 104{ 105 106 if (cn_tab) 107 (*cn_tab->cn_putc)(cn_tab->cn_dev, c); 108} 109 110int 111cnscan(void) 112{ 113 114 if (cn_tab) 115 return ((*cn_tab->cn_scan)(cn_tab->cn_dev)); 116 return -1; 117} 118 119#ifdef CONS_SERIAL 120/* 121 * serial console 122 */ 123void 124siocnprobe(struct consdev *cp) 125{ 126 127 cp->cn_pri = CN_REMOTE; 128} 129 130void 131siocninit(struct consdev *cp) 132{ 133 134 cp->cn_dev = (void *)NS16550_init(cp->address, cp->speed); 135} 136 137int 138siocngetchar(void *dev) 139{ 140 141 return (NS16550_getc((struct NS16550 *)dev)); 142} 143 144void 145siocnputchar(void *dev, register int c) 146{ 147 148 if (c == '\n') 149 NS16550_putc((struct NS16550 *)dev, '\r'); 150 NS16550_putc((struct NS16550 *)dev, c); 151} 152 153int 154siocnscan(void *dev) 155{ 156 157 return (NS16550_scankbd((struct NS16550 *)dev)); 158} 159#endif /* CONS_SERIAL */ 160