1 /* $NetBSD: cons.c,v 1.2 1997/05/12 07:44:53 thorpej 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 <dev/cons.h> 47 48 #include <hp300/stand/common/consdefs.h> 49 #include <hp300/stand/common/samachdep.h> 50 51 struct consdev constab[] = { 52 #ifdef ITECONSOLE 53 { iteprobe, iteinit, itegetchar, iteputchar }, 54 #endif 55 #ifdef DCACONSOLE 56 { dcaprobe, dcainit, dcagetchar, dcaputchar }, 57 #endif 58 #ifdef APCICONSOLE 59 { apciprobe, apciinit, apcigetchar, apciputchar }, 60 #endif 61 #ifdef DCMCONSOLE 62 { dcmprobe, dcminit, dcmgetchar, dcmputchar }, 63 #endif 64 { 0 }, 65 }; 66 67 int curcons_scode; /* select code of device currently being probed */ 68 int cons_scode; /* final select code of console device */ 69 70 struct consdev *cn_tab; 71 int noconsole; 72 73 void 74 cninit() 75 { 76 register struct consdev *cp; 77 78 cn_tab = NULL; 79 noconsole = 1; 80 cons_scode = 256; /* larger than last valid select code */ 81 for (cp = constab; cp->cn_probe; cp++) { 82 (*cp->cn_probe)(cp); 83 if (cp->cn_pri > CN_DEAD && 84 (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri)) { 85 cn_tab = cp; 86 cons_scode = curcons_scode; 87 } 88 } 89 if (cn_tab) { 90 (*cn_tab->cn_init)(cn_tab); 91 noconsole = 0; 92 #if 0 93 printf("console: "); 94 switch (cons_scode) { 95 case -2: 96 printf("apci\n"); 97 break; 98 case -1: 99 printf("internal grf\n"); 100 break; 101 default: 102 printf("scode %d\n", cons_scode); 103 } 104 #endif 105 } 106 } 107 108 int 109 cngetc() 110 { 111 112 /* Note: the dev_t arguments are not used! */ 113 if (cn_tab) 114 return((*cn_tab->cn_getc)(0)); 115 return(0); 116 } 117 118 int 119 cnputc(c) 120 int c; 121 { 122 123 /* Note: the dev_t arguments are not used! */ 124 if (userom) 125 romputchar(c); 126 else if (cn_tab) 127 (*cn_tab->cn_putc)(0, c); 128 129 return (0); 130 } 131