2000/0401/alphapc/kbd.c (diff list | history)

alphapc/kbd.c on 1999/0415
1999/0415		#include "u.h" #include "../port/lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "io.h" #include "../port/error.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) */
2000/0108		KF= 0xF000, /* function key (begin Unicode private space) */
1999/0415		Shift= Spec|0x60, Break= Spec|0x61, Ctrl= Spec|0x62, Latin= Spec|0x63, Caps= Spec|0x64, Num= Spec|0x65, Middle= Spec|0x66, No= 0x00, /* peter */ Home= KF|13, Up= KF|14, Pgup= KF|15, Print= KF|16,
2000/0108		Left= KF|17, Right= KF|18,
1999/0415		End= '\r', Down= View,
2000/0108		Pgdown= KF|19,
1999/0415		Ins= KF|20,
2000/0108		Scroll= KF|21,
1999/0415		Del= 0x7F, };
2000/0108		/* * The codes at 0x79 and 0x81 are produed by the PFU Happy Hacking keyboard. * A 'standard' keyboard doesn't produce anything above 0x58. */ Rune kbtab[] =
1999/0415		{ [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, '*', [0x38] Latin, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
2000/0108		[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, Scroll, '7',
1999/0415		[0x48] '8', '9', '-', '4', '5', '6', '+', '1', [0x50] '2', '3', '0', '.', No, No, No, KF|11, [0x58] KF|12, No, No, No, No, No, No, No,
1999/0514		[0x60] No, No, No, No, No, No, No, No, [0x68] No, No, No, No, No, No, No, No, [0x70] No, No, No, No, No, No, No, No,
2000/0108		[0x78] No, View, No, Up, No, No, No, No,
1999/0415		};
2000/0108		Rune kbtabshift[] =
1999/0415		{ [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, '*', [0x38] Latin, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
2000/0108		[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, Scroll, '7',
1999/0415		[0x48] '8', '9', '-', '4', '5', '6', '+', '1', [0x50] '2', '3', '0', '.', No, No, No, KF|11, [0x58] KF|12, No, No, No, No, No, No, No,
1999/0514		[0x60] No, No, No, No, No, No, No, No, [0x68] No, No, No, No, No, No, No, No, [0x70] No, No, No, No, No, No, No, No,
2000/0108		[0x78] No, Up, No, Up, No, No, No, No,
1999/0415		};
2000/0108		Rune kbtabesc1[] =
1999/0415		{ [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, '\n', Ctrl, No, No, [0x20] No, No, No, No, No, No, No, No, [0x28] No, No, Shift, No, No, No, No, No, [0x30] 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, Left, No, Right, No, End, [0x50] Down, Pgdown, Ins, Del, No, No, No, No, [0x58] No, No, No, No, No, No, No, No,
1999/0514		[0x60] No, No, No, No, No, No, No, No, [0x68] No, No, No, No, No, No, No, No, [0x70] No, No, No, No, No, No, No, No,
2000/0108		[0x78] No, Up, No, No, No, No, No, No,
1999/0415		}; enum { /* controller command byte */ Cscs1= (1<<6), /* scan code set 1 */ Cauxdis= (1<<5), /* mouse disable */ Ckbddis= (1<<4), /* kbd disable */ Csf= (1<<2), /* system flag */ Cauxint= (1<<1), /* mouse interrupt enable */ Ckbdint= (1<<0), /* kbd interrupt enable */ }; static Lock i8042lock; static uchar ccc; static void (*auxputc)(int, int); /* * 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 reset the machine */ void i8042reset(void) { ushort *s = KADDR(0x472); int i, x; *s = 0x1234; /* BIOS warm-boot flag */ /* * newer reset the machine command */ outready(); outb(Cmd, 0xFE); 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); } } int i8042auxcmd(int cmd) { unsigned int c; int tries; c = 0; tries = 0; ilock(&i8042lock); do{ if(tries++ > 2) break; if(outready() < 0) break; outb(Cmd, 0xD4); if(outready() < 0) break; outb(Data, cmd); if(outready() < 0) break; if(inready() < 0) break; c = inb(Data); } while(c == 0xFE || c == 0); iunlock(&i8042lock); if(c != 0xFA){ print("i8042: %2.2ux returned to the %2.2ux command\n", c, cmd); return -1; } return 0; } /* * keyboard interrupt */ static void i8042intr(Ureg*, void*) { int s, c, i; static int esc1, esc2; static int alt, caps, ctl, num, shift; static int collecting, nk;
2000/0108		static Rune kc[5];
1999/0415		int keyup; /* * get status */ lock(&i8042lock); s = inb(Status); if(!(s&Inready)){ unlock(&i8042lock); return; } /* * get the character */ c = inb(Data); unlock(&i8042lock); /* * if it's the aux port... */ if(s & Minready){ if(auxputc != nil) auxputc(c, shift); return; } /* * e0's is the first of a 2 character sequence */ if(c == 0xe0){ esc1 = 1; return; } else if(c == 0xe1){ esc2 = 2; return; } keyup = c&0x80; c &= 0x7f; if(c > sizeof kbtab){ c |= keyup; if(c != 0xFF) /* these come fairly often: CAPSLOCK U Y */ print("unknown key %ux\n", c); return; } if(esc1){ c = kbtabesc1[c]; esc1 = 0; } else if(esc2){ esc2--; return; } 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 Latin: alt = 0; break; case Shift: shift = 0; break; case Ctrl: ctl = 0; break; } return; } /* * normal character */
2000/0108		if(!(c & (Spec|KF))){
1999/0415		if(ctl){ if(alt && c == Del) exit(0); c &= 0x1f; } if(!collecting){ kbdputc(kbdq, c); return; } kc[nk++] = c; c = latin1(kc, nk); if(c < -1) /* need more keystrokes */ return; if(c != -1) /* valid sequence */ kbdputc(kbdq, c); else /* dump characters */ for(i=0; i<nk; i++) kbdputc(kbdq, kc[i]); nk = 0; collecting = 0; return; } else { switch(c){ case Caps: caps ^= 1; return; case Num: num ^= 1; return; case Shift: shift = 1; return; case Latin: alt = 1; collecting = 1; nk = 0; return; case Ctrl: ctl = 1; return; } } kbdputc(kbdq, c); } void i8042auxenable(void (*putc)(int, int)) { char *err = "i8042: aux init failed\n"; /* enable kbd/aux xfers and interrupts */ ccc &= ~Cauxdis; ccc |= Cauxint; ilock(&i8042lock); if(outready() < 0) print(err); outb(Cmd, 0x60); /* write control register */ if(outready() < 0) print(err); outb(Data, ccc); if(outready() < 0) print(err); outb(Cmd, 0xA8); /* auxilliary device enable */ if(outready() < 0){ iunlock(&i8042lock); return; } auxputc = putc;
2000/0401		intrenable(IrqAUX, i8042intr, 0, BUSUNKNOWN, "kbdaux");
1999/0415		iunlock(&i8042lock); }
2000/0401		static void setscan(int code) { char *err = "setscan: set scan code failed\n"; outb(Data, 0xF0); if(inready() < 0 || inb(Data) != 0xFA || outready() < 0) { print(err); return; } outb(Data, code); if(inready() < 0) { print(err); return; } inb(Data); if(outready() < 0) print(err); }
1999/0415		void kbdinit(void) {
1999/0514		int c;
1999/0415		kbdq = qopen(4*1024, 0, 0, 0); if(kbdq == nil) panic("kbdinit"); qnoblock(kbdq, 1);
2000/0401		ioalloc(Data, 1, 0, "kbd"); ioalloc(Cmd, 1, 0, "kbd");
1999/0415
2000/0401		intrenable(IrqKBD, i8042intr, 0, BUSUNKNOWN, "kbd");
1999/0415		/* wait for a quiescent controller */ while((c = inb(Status)) & (Outbusy | Inready))
1999/0514		if(c & Inready) inb(Data);
1999/0415		/* 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 */ /* disable mouse */ ccc &= ~Ckbddis; ccc |= Csf | Ckbdint | Cscs1; if(outready() < 0) print("kbd init failed\n"); outb(Cmd, 0x60); if(outready() < 0) print("kbd init failed\n"); outb(Data, ccc); outready();
2000/0401		setscan(0x02);
1999/0415		}