#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) */	KF=		0xF000,	/* function key (begin Unicode private space) */	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,	Left=		KF|17,	Right=		KF|18,	End=		'\r',	Down=		View,	Pgdown=		KF|19,	Ins=		KF|20,	Del=		0x7F,	Scroll=		KF|21,}; /* * 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[] = {[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,[0x40]	KF|6,	KF|7,	KF|8,	KF|9,	KF|10,	Num,	Scroll,	'7',[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,[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,[0x78]	No,	View,	No,	Up,	No,	No,	No,	No,}; Rune 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,	'*',[0x38]	Latin,	' ',	Ctrl,	KF|1,	KF|2,	KF|3,	KF|4,	KF|5,[0x40]	KF|6,	KF|7,	KF|8,	KF|9,	KF|10,	Num,	Scroll,	'7',[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,[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,[0x78]	No,	Up,	No,	Up,	No,	No,	No,	No,}; Rune 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,	'\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,[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,[0x78]	No,	Up,	No,	No,	No,	No,	No,	No,}; 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 */}; int mouseshifted; static Lock i8042lock;static uchar ccc;static void (*auxputc)(int, int); /* *  wait for output no longer busy */static intoutready(void){	int tries; 	for(tries = 0; (inb(Status) & Outbusy); tries++){		if(tries > 500)			return -1;		delay(2);	}	return 0;} /* *  wait for input */static intinready(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 */voidi8042reset(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);	}} inti8042auxcmd(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;} inti8042auxcmds(uchar *cmd, int ncmd){	int i; 	ilock(&i8042lock);	for(i=0; i<ncmd; i++){		if(outready() < 0)			break;		outb(Cmd, 0xD4);		if(outready() < 0)			break;		outb(Data, cmd[i]);	}	iunlock(&i8042lock);	return i;} /* *  keyboard interrupt */static voidi8042intr(Ureg*, void*){	int s, c, i;	static int esc1, esc2;	static int alt, caps, ctl, num, shift;	static int collecting, nk;	static Rune kc[5];	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;			mouseshifted = 0;			break;		case Ctrl:			ctl = 0;			break;		}		return;	} 	/* 	 *  normal character	 */	if(!(c & (Spec|KF))){		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;			mouseshifted = 1;			return;		case Latin:			alt = 1;			/*			 * VMware uses Ctl-Alt as the key combination			 * to make the VM give up keyboard and mouse focus.			 * This has the unfortunate side effect that when you			 * come back into focus, Plan 9 thinks you want to type			 * a compose sequence (you just typed alt). 			 *			 * As a clumsy hack around this, we look for ctl-alt			 * and don't treat it as the start of a compose sequence.			 */			if(!ctl){				collecting = 1;				nk = 0;			}			return;		case Ctrl:			collecting = 0;			nk = 0;			ctl = 1;			return;		}	}	kbdputc(kbdq, c);} voidi8042auxenable(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;	intrenable(IrqAUX, i8042intr, 0, BUSUNKNOWN, "kbdaux");	iunlock(&i8042lock);} voidkbdinit(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 */	/* 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();} voidkbdenable(void){	if(kbdq == nil){		kbdq = qopen(4*1024, 0, 0, 0);		if(kbdq == nil)			panic("kbdinit");		qnoblock(kbdq, 1);	} 	ioalloc(Data, 1, 0, "kbd");	ioalloc(Cmd, 1, 0, "kbd"); 	intrenable(IrqKBD, i8042intr, 0, BUSUNKNOWN, "kbd");}