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1.1 ! root 1: /*- ! 2: * Copyright (c) 1990 The Regents of the University of California. ! 3: * All rights reserved. ! 4: * ! 5: * This code is derived from software contributed to Berkeley by ! 6: * William Jolitz. ! 7: * ! 8: * Redistribution and use in source and binary forms, with or without ! 9: * modification, are permitted provided that the following conditions ! 10: * are met: ! 11: * 1. Redistributions of source code must retain the above copyright ! 12: * notice, this list of conditions and the following disclaimer. ! 13: * 2. Redistributions in binary form must reproduce the above copyright ! 14: * notice, this list of conditions and the following disclaimer in the ! 15: * documentation and/or other materials provided with the distribution. ! 16: * 3. All advertising materials mentioning features or use of this software ! 17: * must display the following acknowledgement: ! 18: * This product includes software developed by the University of ! 19: * California, Berkeley and its contributors. ! 20: * 4. 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: * @(#)kbd.c 7.4 (Berkeley) 5/4/91 ! 37: */ ! 38: ! 39: #define L 0x01 /* locking function */ ! 40: #define SHF 0x02 /* keyboard shift */ ! 41: #define ALT 0x04 /* alternate shift -- alternate chars */ ! 42: #define NUM 0x08 /* numeric shift cursors vs. numeric */ ! 43: #define CTL 0x10 /* control shift -- allows ctl function */ ! 44: #define CPS 0x20 /* caps shift -- swaps case of letter */ ! 45: #define ASCII 0x40 /* ascii code for this key */ ! 46: #define STP 0x80 /* stop output */ ! 47: ! 48: typedef unsigned char u_char; ! 49: ! 50: u_char inb(); ! 51: ! 52: u_char action[] = { ! 53: 0, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, /* scan 0- 7 */ ! 54: ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, /* scan 8-15 */ ! 55: ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, /* scan 16-23 */ ! 56: ASCII, ASCII, ASCII, ASCII, ASCII, CTL, ASCII, ASCII, /* scan 24-31 */ ! 57: ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, /* scan 32-39 */ ! 58: ASCII, ASCII, SHF , ASCII, ASCII, ASCII, ASCII, ASCII, /* scan 40-47 */ ! 59: ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, SHF, ASCII, /* scan 48-55 */ ! 60: ALT, ASCII, CPS|L, 0, 0, ASCII, 0, 0, /* scan 56-63 */ ! 61: 0, 0, 0, 0, 0, NUM|L, STP|L, ASCII, /* scan 64-71 */ ! 62: ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, /* scan 72-79 */ ! 63: ASCII, ASCII, ASCII, ASCII, 0, 0, 0, 0, /* scan 80-87 */ ! 64: 0,0,0,0,0,0,0,0, ! 65: 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, ! 66: 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, } ; ! 67: ! 68: u_char unshift[] = { /* no shift */ ! 69: 0, 033 , '1' , '2' , '3' , '4' , '5' , '6' , /* scan 0- 7 */ ! 70: '7' , '8' , '9' , '0' , '-' , '=' , 0177 ,'\t' , /* scan 8-15 */ ! 71: ! 72: 'q' , 'w' , 'e' , 'r' , 't' , 'y' , 'u' , 'i' , /* scan 16-23 */ ! 73: 'o' , 'p' , '[' , ']' , '\r' , CTL , 'a' , 's' , /* scan 24-31 */ ! 74: ! 75: 'd' , 'f' , 'g' , 'h' , 'j' , 'k' , 'l' , ';' , /* scan 32-39 */ ! 76: '\'' , '`' , SHF , '\\' , 'z' , 'x' , 'c' , 'v' , /* scan 40-47 */ ! 77: ! 78: 'b' , 'n' , 'm' , ',' , '.' , '/' , SHF , '*', /* scan 48-55 */ ! 79: ALT , ' ' , CPS|L, 0, 0, ' ' , 0, 0, /* scan 56-63 */ ! 80: ! 81: 0, 0, 0, 0, 0, NUM|L, STP|L, '7', /* scan 64-71 */ ! 82: '8', '9', '-', '4', '5', '6', '+', '1', /* scan 72-79 */ ! 83: ! 84: '2', '3', '0', '.', 0, 0, 0, 0, /* scan 80-87 */ ! 85: 0,0,0,0,0,0,0,0, ! 86: 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, ! 87: 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, } ; ! 88: ! 89: u_char shift[] = { /* shift shift */ ! 90: 0, 033 , '!' , '@' , '#' , '$' , '%' , '^' , /* scan 0- 7 */ ! 91: '&' , '*' , '(' , ')' , '_' , '+' , 0177 ,'\t' , /* scan 8-15 */ ! 92: 'Q' , 'W' , 'E' , 'R' , 'T' , 'Y' , 'U' , 'I' , /* scan 16-23 */ ! 93: 'O' , 'P' , '[' , ']' , '\r' , CTL , 'A' , 'S' , /* scan 24-31 */ ! 94: 'D' , 'F' , 'G' , 'H' , 'J' , 'K' , 'L' , ':' , /* scan 32-39 */ ! 95: '"' , '~' , SHF , '|' , 'Z' , 'X' , 'C' , 'V' , /* scan 40-47 */ ! 96: 'B' , 'N' , 'M' , '<' , '>' , '?' , SHF , '*', /* scan 48-55 */ ! 97: ALT , ' ' , CPS|L, 0, 0, ' ' , 0, 0, /* scan 56-63 */ ! 98: 0, 0, 0, 0, 0, NUM|L, STP|L, '7', /* scan 64-71 */ ! 99: '8', '9', '-', '4', '5', '6', '+', '1', /* scan 72-79 */ ! 100: '2', '3', '0', '.', 0, 0, 0, 0, /* scan 80-87 */ ! 101: 0,0,0,0,0,0,0,0, ! 102: 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, ! 103: 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, } ; ! 104: ! 105: u_char ctl[] = { /* CTL shift */ ! 106: 0, 033 , '!' , 000 , '#' , '$' , '%' , 036 , /* scan 0- 7 */ ! 107: '&' , '*' , '(' , ')' , 037 , '+' , 034 ,'\177', /* scan 8-15 */ ! 108: 021 , 027 , 005 , 022 , 024 , 031 , 025 , 011 , /* scan 16-23 */ ! 109: 017 , 020 , 033 , 035 , '\r' , CTL , 001 , 013 , /* scan 24-31 */ ! 110: 004 , 006 , 007 , 010 , 012 , 013 , 014 , ';' , /* scan 32-39 */ ! 111: '\'' , '`' , SHF , 034 , 032 , 030 , 003 , 026 , /* scan 40-47 */ ! 112: 002 , 016 , 015 , '<' , '>' , '?' , SHF , '*', /* scan 48-55 */ ! 113: ALT , ' ' , CPS|L, 0, 0, ' ' , 0, 0, /* scan 56-63 */ ! 114: CPS|L, 0, 0, 0, 0, 0, 0, 0, /* scan 64-71 */ ! 115: 0, 0, 0, 0, 0, 0, 0, 0, /* scan 72-79 */ ! 116: 0, 0, 0, 0, 0, 0, 0, 0, /* scan 80-87 */ ! 117: 0, 0, 033, '7' , '4' , '1' , 0, NUM|L, /* scan 88-95 */ ! 118: '8' , '5' , '2' , 0, STP|L, '9' , '6' , '3' , /*scan 96-103*/ ! 119: '.' , 0, '*' , '-' , '+' , 0, 0, 0, /*scan 104-111*/ ! 120: 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, } ; ! 121: ! 122: #ifdef notdef ! 123: struct key { ! 124: u_short action; /* how this key functions */ ! 125: char ascii[8]; /* ascii result character indexed by shifts */ ! 126: }; ! 127: #endif ! 128: ! 129: u_char shfts, ctls, alts, caps, num, stp; ! 130: ! 131: #define KBSTATP 0x64 /* kbd status port */ ! 132: #define KBS_INP_BUF_FUL 0x02 /* kbd char ready */ ! 133: #define KBDATAP 0x60 /* kbd data port */ ! 134: #define KBSTATUSPORT 0x61 /* kbd status */ ! 135: ! 136: u_char odt; ! 137: ! 138: u_char kbd() { ! 139: u_char dt, brk, act; ! 140: ! 141: loop: ! 142: while(inb(0x64)&1 == 0); ! 143: dt = inb(0x60); ! 144: do { ! 145: while(inb(0x64)&1 == 0); ! 146: } while(dt == inb(0x60)); ! 147: odt = dt; ! 148: ! 149: brk = dt & 0x80 ; dt = dt & 0x7f ; ! 150: ! 151: act = action[dt]; ! 152: if (act&SHF) { ! 153: if(brk) shfts = 0; else shfts = 1; ! 154: } ! 155: if (act&ALT) { ! 156: if(brk) alts = 0; else alts = 1; ! 157: } ! 158: if (act&NUM) { ! 159: if (act&L) { ! 160: if(!brk) num ^= 1; ! 161: } else if(brk) num = 0; else num = 1; ! 162: } ! 163: if (act&CTL) { ! 164: if(brk) ctls = 0; else ctls = 1; ! 165: } ! 166: if (act&CPS) { ! 167: if (act&L) { ! 168: if(!brk) caps ^= 1; ! 169: } else if(brk) caps = 0; else caps = 1; ! 170: } ! 171: if (act&STP) { ! 172: if (act&L) { ! 173: if(!brk) stp ^= 1; ! 174: } else if(brk) stp = 0; else stp = 1; ! 175: } ! 176: if(ctl && alts && dt == 83) exit(); ! 177: if ((act&ASCII) && !brk) { ! 178: u_char chr; ! 179: ! 180: if (shfts){ ! 181: chr = shift[dt] ; } else { ! 182: if (ctls) { ! 183: chr = ctl[dt] ; } else { ! 184: chr = unshift[dt] ; } } ! 185: if (caps && (chr >= 'a' && chr <= 'z')) { ! 186: chr -= 'a' - 'A' ; ! 187: } ! 188: /*do ! 189: while(inb(0x64)&1 == 0) ; ! 190: while (inb(0x60) == (chr | 0x80)); ! 191: while(inb(0x64)&1 == 1) inb(0x60);A*/ ! 192: return(chr); ! 193: } ! 194: goto loop; ! 195: } ! 196: ! 197: scankbd() { ! 198: u_char c; ! 199: ! 200: c = inb(0x60); ! 201: if (c == 0xaa) { odt = 0x2a; return (0); } ! 202: if (c == 0xfa) { odt = 0x7a; return (0); } ! 203: c &= 0x7f; ! 204: ! 205: if ( (odt&0x7f) == c )return(0); ! 206: if(odt == 0) { odt = c; return(0); } ! 207: return(kbd()); ! 208: } ! 209: ! 210: kbdreset() ! 211: { ! 212: u_char c; ! 213: ! 214: /* Enable interrupts and keyboard controller */ ! 215: while (inb(0x64)&2); outb(0x64,0x60); ! 216: while (inb(0x64)&2); outb(0x60,0x4D); ! 217: ! 218: /* Start keyboard stuff RESET */ ! 219: while (inb(0x64)&2); /* wait input ready */ ! 220: outb(0x60,0xFF); /* RESET */ ! 221: ! 222: while((c=inb(0x60))!=0xFA) ; ! 223: ! 224: /* While we are here, defeat gatea20 */ ! 225: while (inb(0x64)&2); /* wait input ready */ ! 226: outb(0x64,0xd1); ! 227: while (inb(0x64)&2); /* wait input ready */ ! 228: outb(0x60,0xdf); ! 229: } ! 230: ! 231: u_char getchar() { ! 232: u_char c; ! 233: ! 234: c = kbd(); ! 235: if (c == '\b' || c == '\177') return(c); ! 236: if (c == '\r') c = '\n'; ! 237: putchar(c); ! 238: return(c); ! 239: } ! 240: ! 241: reset_cpu() { ! 242: ! 243: while (inb(0x64)&2); /* wait input ready */ ! 244: outb(0x64,0xFE); /* Reset Command */ ! 245: wait(4000000); ! 246: /* NOTREACHED */ ! 247: }
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