ref: 41e27b2d10c6a60c49931332e8677438736a1e36
dir: /os/boot/puma/kbd.c/
#include "boot.h" enum { Data= 0x60, /* data port */ Status= 0x64, /* status port */ Inready= 0x01, /* input character ready */ Outbusy= 0x02, /* output busy */ Sysflag= 0x04, /* system flag */ Cmddata= 0x08, /* cmd==0, data==1 */ Inhibit= 0x10, /* keyboard/mouse inhibited */ Minready= 0x20, /* mouse character ready */ Rtimeout= 0x40, /* general timeout */ Parity= 0x80, Cmd= 0x64, /* command port (write only) */ Spec= 0x80, PF= Spec|0x20, /* num pad function key */ View= Spec|0x00, /* view (shift window up) */ KF= Spec|0x40, /* function key */ Shift= Spec|0x60, Break= Spec|0x61, Ctrl= Spec|0x62, Latin= Spec|0x63, Caps= Spec|0x64, Num= Spec|0x65, No= Spec|0x7F, /* no mapping */ Home= KF|13, Up= KF|14, Pgup= KF|15, Print= KF|16, Left= View, Right= View, End= '\r', Down= View, Pgdown= View, Ins= KF|20, Del= 0x7F, }; uchar kbtab[] = { [0x00] No, 0x1b, '1', '2', '3', '4', '5', '6', [0x08] '7', '8', '9', '0', '-', '=', '\b', '\t', [0x10] 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', [0x18] 'o', 'p', '[', ']', '\n', Ctrl, 'a', 's', [0x20] 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', [0x28] '\'', '`', Shift, '\\', 'z', 'x', 'c', 'v', [0x30] 'b', 'n', 'm', ',', '.', '/', Shift, No, [0x38] Latin, ' ', Caps, KF|1, KF|2, KF|3, KF|4, KF|5, [0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, KF|12, Home, [0x48] No, No, No, No, No, No, No, No, [0x50] No, No, No, No, No, No, No, KF|11, [0x58] KF|12, No, No, No, No, No, No, No, }; uchar kbtabshift[] = { [0x00] No, 0x1b, '!', '@', '#', '$', '%', '^', [0x08] '&', '*', '(', ')', '_', '+', '\b', '\t', [0x10] 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', [0x18] 'O', 'P', '{', '}', '\n', Ctrl, 'A', 'S', [0x20] 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', [0x28] '"', '~', Shift, '|', 'Z', 'X', 'C', 'V', [0x30] 'B', 'N', 'M', '<', '>', '?', Shift, No, [0x38] Latin, ' ', Caps, KF|1, KF|2, KF|3, KF|4, KF|5, [0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, KF|12, Home, [0x48] No, No, No, No, No, No, No, No, [0x50] No, No, No, No, No, No, No, KF|11, [0x58] KF|12, No, No, No, No, No, No, No, }; uchar kbtabesc1[] = { [0x00] No, No, No, No, No, No, No, No, [0x08] No, No, No, No, No, No, No, No, [0x10] No, No, No, No, No, No, No, No, [0x18] No, No, No, No, No, Ctrl, No, No, [0x20] No, No, No, No, No, No, No, No, [0x28] No, No, No, No, No, No, No, No, [0x30] No, No, No, No, No, No, No, Print, [0x38] Latin, No, No, No, No, No, No, No, [0x40] No, No, No, No, No, No, Break, Home, [0x48] Up, Pgup, No, Down, No, Right, No, End, [0x50] Left, Pgdown, Ins, Del, No, No, No, No, [0x58] No, No, No, No, No, No, No, No, }; struct latin { uchar l; char c[2]; }latintab[] = { L'¡', "!!", /* spanish initial ! */ L'¢', "c|", /* cent */ L'¢', "c$", /* cent */ L'£', "l$", /* pound sterling */ L'¤', "g$", /* general currency */ L'¥', "y$", /* yen */ L'¥', "j$", /* yen */ L'¦', "||", /* broken vertical bar */ L'§', "SS", /* section symbol */ L'¨', "\"\"", /* dieresis */ L'©', "cr", /* copyright */ L'©', "cO", /* copyright */ L'ª', "sa", /* super a, feminine ordinal */ L'«', "<<", /* left angle quotation */ L'¬', "no", /* not sign, hooked overbar */ L'', "--", /* soft hyphen */ L'®', "rg", /* registered trademark */ L'¯', "__", /* macron */ L'°', "s0", /* degree (sup o) */ L'±', "+-", /* plus-minus */ L'²', "s2", /* sup 2 */ L'³', "s3", /* sup 3 */ L'´', "''", /* grave accent */ L'µ', "mu", /* mu */ L'¶', "pg", /* paragraph (pilcrow) */ L'·', "..", /* centered . */ L'¸', ",,", /* cedilla */ L'¹', "s1", /* sup 1 */ L'º', "so", /* sup o */ L'»', ">>", /* right angle quotation */ L'¼', "14", /* 1/4 */ L'½', "12", /* 1/2 */ L'¾', "34", /* 3/4 */ L'¿', "??", /* spanish initial ? */ L'À', "A`", /* A grave */ L'Á', "A'", /* A acute */ L'Â', "A^", /* A circumflex */ L'Ã', "A~", /* A tilde */ L'Ä', "A\"", /* A dieresis */ L'Ä', "A:", /* A dieresis */ L'Å', "Ao", /* A circle */ L'Å', "AO", /* A circle */ L'Æ', "Ae", /* AE ligature */ L'Æ', "AE", /* AE ligature */ L'Ç', "C,", /* C cedilla */ L'È', "E`", /* E grave */ L'É', "E'", /* E acute */ L'Ê', "E^", /* E circumflex */ L'Ë', "E\"", /* E dieresis */ L'Ë', "E:", /* E dieresis */ L'Ì', "I`", /* I grave */ L'Í', "I'", /* I acute */ L'Î', "I^", /* I circumflex */ L'Ï', "I\"", /* I dieresis */ L'Ï', "I:", /* I dieresis */ L'Ð', "D-", /* Eth */ L'Ñ', "N~", /* N tilde */ L'Ò', "O`", /* O grave */ L'Ó', "O'", /* O acute */ L'Ô', "O^", /* O circumflex */ L'Õ', "O~", /* O tilde */ L'Ö', "O\"", /* O dieresis */ L'Ö', "O:", /* O dieresis */ L'Ö', "OE", /* O dieresis */ L'Ö', "Oe", /* O dieresis */ L'×', "xx", /* times sign */ L'Ø', "O/", /* O slash */ L'Ù', "U`", /* U grave */ L'Ú', "U'", /* U acute */ L'Û', "U^", /* U circumflex */ L'Ü', "U\"", /* U dieresis */ L'Ü', "U:", /* U dieresis */ L'Ü', "UE", /* U dieresis */ L'Ü', "Ue", /* U dieresis */ L'Ý', "Y'", /* Y acute */ L'Þ', "P|", /* Thorn */ L'Þ', "Th", /* Thorn */ L'Þ', "TH", /* Thorn */ L'ß', "ss", /* sharp s */ L'à', "a`", /* a grave */ L'á', "a'", /* a acute */ L'â', "a^", /* a circumflex */ L'ã', "a~", /* a tilde */ L'ä', "a\"", /* a dieresis */ L'ä', "a:", /* a dieresis */ L'å', "ao", /* a circle */ L'æ', "ae", /* ae ligature */ L'ç', "c,", /* c cedilla */ L'è', "e`", /* e grave */ L'é', "e'", /* e acute */ L'ê', "e^", /* e circumflex */ L'ë', "e\"", /* e dieresis */ L'ë', "e:", /* e dieresis */ L'ì', "i`", /* i grave */ L'í', "i'", /* i acute */ L'î', "i^", /* i circumflex */ L'ï', "i\"", /* i dieresis */ L'ï', "i:", /* i dieresis */ L'ð', "d-", /* eth */ L'ñ', "n~", /* n tilde */ L'ò', "o`", /* o grave */ L'ó', "o'", /* o acute */ L'ô', "o^", /* o circumflex */ L'õ', "o~", /* o tilde */ L'ö', "o\"", /* o dieresis */ L'ö', "o:", /* o dieresis */ L'ö', "oe", /* o dieresis */ L'÷', "-:", /* divide sign */ L'ø', "o/", /* o slash */ L'ù', "u`", /* u grave */ L'ú', "u'", /* u acute */ L'û', "u^", /* u circumflex */ L'ü', "u\"", /* u dieresis */ L'ü', "u:", /* u dieresis */ L'ü', "ue", /* u dieresis */ L'ý', "y'", /* y acute */ L'þ', "th", /* thorn */ L'þ', "p|", /* thorn */ L'ÿ', "y\"", /* y dieresis */ L'ÿ', "y:", /* y dieresis */ 0, 0, }; enum { /* controller command byte */ Cscs1= (1<<6), /* scan code set 1 */ Cmousedis= (1<<5), /* mouse disable */ Ckbddis= (1<<4), /* kbd disable */ Csf= (1<<2), /* system flag */ Cmouseint= (1<<1), /* mouse interrupt enable */ Ckbdint= (1<<0), /* kbd interrupt enable */ }; static uchar ccc; int latin1(int k1, int k2) { struct latin *l; for(l=latintab; l->l; l++) if(k1==l->c[0] && k2==l->c[1]) return l->l; return 0; } /* * wait for output no longer busy */ static int outready(void) { int tries; for(tries = 0; (inb(Status) & Outbusy); tries++){ if(tries > 500) return -1; delay(2); } return 0; } /* * wait for input */ static int inready(void) { int tries; for(tries = 0; !(inb(Status) & Inready); tries++){ if(tries > 500) return -1; delay(2); } return 0; } /* * ask 8042 to enable the use of address bit 20 */ void i8042a20(void) { outready(); outb(Cmd, 0xD1); outready(); outb(Data, 0xDF); outready(); } /* * ask 8042 to reset the machine */ void i8042reset(void) { ushort *s = (ushort*)(KZERO|0x472); int i, x; *s = 0x1234; /* BIOS warm-boot flag */ outready(); outb(Cmd, 0xFE); /* pulse reset line (means resend on AT&T machines) */ outready(); /* * Pulse it by hand (old somewhat reliable) */ x = 0xDF; for(i = 0; i < 5; i++){ x ^= 1; outready(); outb(Cmd, 0xD1); outready(); outb(Data, x); /* toggle reset */ delay(100); } } /* * keyboard interrupt */ int kbdintr0(void) { int s, c; static int esc1, esc2; static int shift; static int caps; static int ctl; static int num; static int lstate, k1, k2; int keyup; /* * get status */ s = inb(Status); if(!(s&Inready)) return -1; /* * get the character */ c = inb(Data); /* * e0's is the first of a 2 character sequence */ if(c == 0xe0){ esc1 = 1; return 0; } else if(c == 0xe1){ esc2 = 2; return 0; } keyup = c&0x80; c &= 0x7f; if(c > sizeof kbtab){ print("unknown key %ux\n", c|keyup); kbdchar(0, k1); return 0; } if(esc1){ c = kbtabesc1[c]; esc1 = 0; kbdchar(0, c); return 0; } else if(esc2){ esc2--; return 0; } else if(shift) c = kbtabshift[c]; else c = kbtab[c]; if(caps && c<='z' && c>='a') c += 'A' - 'a'; /* * keyup only important for shifts */ if(keyup){ switch(c){ case Shift: shift = 0; break; case Ctrl: ctl = 0; break; } return 0; } /* * normal character */ if(!(c & Spec)){ if(ctl) c &= 0x1f; switch(lstate){ case 1: k1 = c; lstate = 2; return 0; case 2: k2 = c; lstate = 0; c = latin1(k1, k2); if(c == 0){ kbdchar(0, k1); c = k2; } /* fall through */ default: break; } } else { switch(c){ case Caps: caps ^= 1; return 0; case Num: num ^= 1; return 0; case Shift: shift = 1; return 0; case Latin: lstate = 1; return 0; case Ctrl: ctl = 1; return 0; } } kbdchar(0, c); return 0; } static void kbdintr(Ureg*, void*) { while(kbdintr0() == 0) ; } static char *initfailed = "kbd init failed\n"; void kbdinit(void) { int c; /* wait for a quiescent controller */ while((c = inb(Status)) & (Outbusy | Inready)) if(c & Inready) inb(Data); /* get current controller command byte */ outb(Cmd, 0x20); if(inready() < 0){ print("kbdinit: can't read ccc\n"); ccc = 0; } else ccc = inb(Data); /* enable kbd xfers and interrupts */ ccc &= ~Ckbddis; ccc |= Csf | Ckbdint | Cscs1; if(outready() < 0) print(initfailed); outb(Cmd, 0x60); if(outready() < 0) print(initfailed); outb(Data, ccc); if(outready() < 0) print(initfailed); setvec(V_KEYBOARD, kbdintr, 0); }