1992/0222/pc/kbd.c (diff list | history)

1992/0222/sys/src/9/pc/kbd.c:1,456 – 1992/0321/sys/src/9/pc/kbd.c:1,456 (short | long | prev | next)
1991/0702		#include "u.h" #include "lib.h"
1992/0321		#include "../port/lib.h"
1991/0706		#include "mem.h"
1991/0702		#include "dat.h" #include "fns.h"
1991/0703		#include "io.h"
1991/0702
1991/0731		#include <libg.h> #include <gnot.h> #include "screen.h"
1991/0702		enum { Data= 0x60, /* data port */ Status= 0x64, /* status port */ Inready= 0x01, /* input character ready */ Outbusy= 0x02, /* output busy */
1991/0730		Sysflag= 0x04, /* system flag */
1991/0702		Cmddata= 0x08, /* cmd==0, data==1 */
1991/0730		Inhibit= 0x10, /* keyboard/mouse inhibited */ Minready= 0x20, /* mouse character ready */ Rtimeout= 0x40, /* general timeout */
1991/0731		Parity= 0x80,
1991/0702
1991/0730		Cmd= 0x64, /* command port (write only) */
1991/0703		Spec= 0x80, PF= Spec|0x20, /* num pad function key */ View= Spec|0x00, /* view (shift window up) */
1991/0731		KF= Spec|0x40, /* function key */
1991/0703		Shift= Spec|0x60, Break= Spec|0x61, Ctrl= Spec|0x62, Latin= Spec|0x63, Caps= Spec|0x64, Num= Spec|0x65,
1991/0911		Middle= Spec|0x66,
1991/0703		No= Spec|0x7F, /* no mapping */
1991/0731		Home= KF|13, Up= KF|14, Pgup= KF|15, Print= KF|16,
1991/0703		Left= View, Right= View, End= '\r', Down= View, Pgdown= View,
1991/0731		Ins= KF|20,
1991/0703		Del= 0x7F,
1991/0702		};
1991/0703		uchar kbtab[] =
1991/0702		{
1991/0703		[0x00] No, 0x1b, '1', '2', '3', '4', '5', '6',
1991/0702		[0x08] '7', '8', '9', '0', '-', '=', '\b', '\t',
1991/0703		[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,
1991/0911		[0x38] Latin, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
1991/0731		[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, KF|12, Home,
1991/0703		[0x48] No, No, No, No, No, No, No, No,
1991/0731		[0x50] No, No, No, No, No, No, No, KF|11, [0x58] KF|12, No, No, No, No, No, No, No,
1991/0702		};
1991/0703		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,
1991/0911		[0x38] Latin, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
1991/0731		[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, KF|12, Home,
1991/0703		[0x48] No, No, No, No, No, No, No, No,
1991/0731		[0x50] No, No, No, No, No, No, No, KF|11, [0x58] KF|12, No, No, No, No, No, No, No,
1991/0703		}; 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, };
1991/0905		/* * keyboard input q */
1991/0703		KIOQ kbdq;
1991/0905
1991/0911		static int mousebuttons; static int middlebutton;
1991/0905		/* * predeclared */ static void kbdintr(Ureg*);
1991/0703
1991/0803		/* * wait for output no longer busy */ static int outready(void)
1991/0731		{
1991/0803		int tries; for(tries = 0; (inb(Status) & Outbusy); tries++) if(tries > 1000) return -1; return 0; } /* * wait for input */ static int inready(void) { int tries; for(tries = 0; !(inb(Status) & Inready); tries++) if(tries > 1000) return -1; return 0; } /* * send a command to the mouse */ static int mousecmd(int cmd) {
1991/0731		unsigned int c;
1991/0803		int tries;
1991/0731
1991/0904		c = 0; do{ for(tries=0; tries < 10; tries++){ if(outready() < 0) return -1; outb(Cmd, 0xD4); if(outready() < 0) return -1; outb(Data, cmd); if(inready() < 0) return -1; c = inb(Data); }
1991/0731		} while(c == 0xFE); if(c != 0xFA)
1991/0803		return -1; return 0;
1991/0731		}
1991/1210		/* * ask 8042 to enable the use of address bit 20 */
1991/0703		void
1991/1210		i8042a20(void) { outready(); outb(Cmd, 0xD1); outready(); outb(Data, 0xDF); outready(); } /* * ask 8042 to reset the 386 */ void i8042reset(void) { outready(); outb(Cmd, 0xD1); outready();
1991/1211		outb(Data, 0x0);
1991/1210		outready(); } void
1991/0703		kbdinit(void) {
1991/0731		int c, s;
1991/0803		int tries;
1991/0730
1991/0703		initq(&kbdq);
1991/0716		setvec(Kbdvec, kbdintr);
1991/0731		initq(&mouseq); setvec(Mousevec, kbdintr);
1991/0730		/* wait for a quiescent controller */ while((c = inb(Status)) & (Outbusy | Inready)) if(c & Inready) inb(Data);
1991/1210		switch(machtype){ case Attnsx: /* enable kbd/mouse xfers and interrupts */ outb(Cmd, 0x60); if(outready() < 0) print("kbd init failed\n"); outb(Data, 0x47); if(outready() < 0) print("kbd init failed\n"); outb(Cmd, 0xA8); /* make mouse streaming, enabled */ if(mousecmd(0xEA) < 0 || mousecmd(0xF4) < 0) print("can't initialize mouse\n"); break; case At: /* enable kbd xfers and interrupts */ outb(Cmd, 0x60); if(outready() < 0) print("kbd init failed\n"); outb(Data, 0x65); break; }
1991/0731		}
1991/0730
1991/0731		/* * mouse message is three bytes * * byte 0 - 0 0 SDY SDX 1 M R L * byte 1 - DX * byte 2 - DY */ static void mymouseputc(int c) { static short msg[3]; static int nb;
1991/0809		static uchar b[] = {0, 1, 4, 5, 2, 3, 6, 7};
1991/0731		static lastdx, lastdy; int diff; extern Mouseinfo mouse; /* * check byte 0 for consistency */ if(nb==0 && (c&0xc8)!=0x08) return; msg[nb] = c; if(++nb == 3){ nb = 0; if(msg[0] & 0x10) msg[1] |= 0xFF00; if(msg[0] & 0x20) msg[2] |= 0xFF00;
1991/0911		mousebuttons = b[msg[0]&7]; mouse.newbuttons = mousebuttons | middlebutton;
1991/0731		mouse.dx = msg[1]; mouse.dy = -msg[2]; mouse.track = 1;
1991/0823		spllo(); /* mouse tracking kills uart0 */
1991/0731		mouseclock(); }
1991/0703		} /*
1991/0911		* Ctrl key used as middle button pressed */ static void middle(int newval) { middlebutton = newval; mouse.newbuttons = mousebuttons | middlebutton; mouse.dx = 0; mouse.dy = 0; mouse.track = 1; spllo(); /* mouse tracking kills uart0 */ mouseclock(); } /*
1991/0703		* keyboard interrupt */
1992/0222		int kbdintr0(void)
1991/0703		{
1991/1211		int s, c, i, nk, nc;
1991/0703		static int esc1, esc2; static int shift; static int caps; static int ctl; static int num;
1991/1211		static int lstate; static uchar kc[5];
1991/0703		int keyup;
1991/0702
1991/0703		/*
1991/0731		* get status
1991/0703		*/
1991/0730		s = inb(Status);
1991/0731		if(!(s&Inready)) return -1; /* * get the character */
1991/0703		c = inb(Data);
1991/0730		/* * if it's the mouse... */ if(s & Minready){
1991/0731		mymouseputc(c); return 0;
1991/0730		}
1991/0703		/* * e0's is the first of a 2 character sequence */ if(c == 0xe0){ esc1 = 1;
1991/0731		return 0;
1991/0703		} else if(c == 0xe1){ esc2 = 2;
1991/0731		return 0;
1991/0703		}
1991/0822		keyup = c&0x80; c &= 0x7f; if(c > sizeof kbtab){ print("unknown key %ux\n", c|keyup); return 0; }
1991/0703		if(esc1){ c = kbtabesc1[c]; esc1 = 0;
1991/0906		if(!keyup)
1992/0211		goto dochar;
1991/0822		return 0;
1991/0703		} else if(esc2){ esc2--;
1991/0731		return 0;
1991/0703		} 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;
1991/0911		case Middle: middle(0); break;
1991/0703		}
1991/0731		return 0;
1991/0703		} /* * normal character */
1992/0211		dochar:
1991/0703		if(!(c & Spec)){ if(ctl) c &= 0x1f; switch(lstate){ case 1:
1991/1211		kc[0] = c;
1991/0703		lstate = 2;
1991/1211		if(c == 'X') lstate = 3; break;
1991/0703		case 2:
1991/1211		kc[1] = c; c = latin1(kc); nk = 2; putit:
1991/0703		lstate = 0;
1991/1211		if(c != -1) kbdputc(&kbdq, c); else for(i=0; i<nk; i++) kbdputc(&kbdq, kc[i]); break; case 3: case 4: case 5: kc[lstate-2] = c; lstate++; break; case 6: kc[4] = c; c = unicode(kc); nk = 5; goto putit;
1991/0703		default:
1991/1211		kbdputc(&kbdq, c);
1991/0703		break; }
1991/1211		return 0;
1991/0703		} else { switch(c){ case Caps: caps ^= 1;
1991/0731		return 0;
1991/0703		case Num: num ^= 1;
1991/0731		return 0;
1991/0703		case Shift: shift = 1;
1991/0731		return 0;
1991/0703		case Latin: lstate = 1;
1991/0731		return 0;
1991/0703		case Ctrl: ctl = 1;
1991/0911		return 0; case Middle: middle(2);
1991/0731		return 0;
1991/0703		} } kbdputc(&kbdq, c);
1991/0731		return 0;
1992/0222		} void kbdintr(Ureg *ur) { kbdintr0();
1991/0703		}