NetBSD/sys/arch/pica/dev/pccons.c

/*	$NetBSD: pccons.c,v 1.6 1996/10/13 03:31:27 christos Exp $	*/

/*-
 * Copyright (c) 1993, 1994, 1995 Charles Hannum.  All rights reserved.
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz and Don Ahn.
 *
 * Copyright (c) 1994 Charles Hannum.
 * Copyright (c) 1992, 1993 Erik Forsberg.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)pccons.c	5.11 (Berkeley) 5/21/91
 */

/*
 * code to work keyboard & display for PC-style console
 */

#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/tty.h>
#include <sys/uio.h>
#include <sys/callout.h>
#include <sys/syslog.h>
#include <sys/vnode.h>
#include <sys/device.h>
#include <sys/file.h>

#include <dev/cons.h>

#include <machine/cpu.h>
#include <machine/pio.h>
#include <machine/autoconf.h>
#include <machine/display.h>
#include <machine/pccons.h>
#include <pica/pica/pica.h>

#ifdef notyet
#include <dev/isa/isavar.h>
#endif
#include <machine/kbdreg.h>

#define	XFREE86_BUG_COMPAT

#ifndef BEEP_FREQ
#define BEEP_FREQ 1600
#endif
#ifndef BEEP_TIME
#define BEEP_TIME (hz/5)
#endif

#define PCBURST 128

static u_short *Crtat;			/* pointer to backing store */
static u_short *crtat;			/* pointer to current char */
static u_char async, kernel, polling;	/* Really, you don't want to know. */
static u_char lock_state = 0x00,	/* all off */
	      old_lock_state = 0xff,
	      typematic_rate = 0xff,	/* don't update until set by user */
	      old_typematic_rate = 0xff;
static u_short cursor_shape = 0xffff,	/* don't update until set by user */
	       old_cursor_shape = 0xffff;
int pc_xmode = 0;

/*
 *  Keyboard output queue.
 */
int	kb_oq_put = 0;
int	kb_oq_get = 0;
u_char	kb_oq[8];

#define	PCUNIT(x)	(minor(x))

static struct video_state {
	int 	cx, cy;		/* escape parameters */
	int 	row, col;	/* current cursor position */
	int 	nrow, ncol, nchr;	/* current screen geometry */
	u_char	state;		/* parser state */
#define	VSS_ESCAPE	1
#define	VSS_EBRACE	2
#define	VSS_EPARAM	3
	char	so;		/* in standout mode? */
	char	color;		/* color or mono display */
	char	at;		/* normal attributes */
	char	so_at;		/* standout attributes */
} vs;

struct pc_softc {
	struct	device sc_dev;
	struct	tty *sc_tty;
};

struct pms_softc {		/* driver status information */
	struct device sc_dev;

	struct clist sc_q;
	struct selinfo sc_rsel;
	u_char sc_state;	/* mouse driver state */
#define	PMS_OPEN	0x01	/* device is open */
#define	PMS_ASLP	0x02	/* waiting for mouse data */
	u_char sc_status;	/* mouse button status */
	int sc_x, sc_y;		/* accumulated motion in the X,Y axis */
};

int pcmatch __P((struct device *, void *, void *));
void pcattach __P((struct device *, struct device *, void *));
int pcintr __P((void *));

struct cfattach pc_ca = {
	sizeof(struct pc_softc), pcmatch, pcattach
};

struct cfdriver pc_cd = {
	NULL, "pc", DV_TTY
};

int pmsprobe __P((struct device *, void *, void *));
void pmsattach __P((struct device *, struct device *, void *));
int pmsintr __P((void *));

struct cfattach pms_ca = {
	sizeof(struct pms_softc), pmsprobe, pmsattach
};

struct cfdriver pms_cd = {
	NULL, "pms", DV_TTY
};

#define	PMSUNIT(dev)	(minor(dev))

#define	COL		80
#define	ROW		25
#define	CHR		2

/*
 * DANGER WIL ROBINSON -- the values of SCROLL, NUM, CAPS, and ALT are
 * important.
 */
#define	SCROLL		0x0001	/* stop output */
#define	NUM		0x0002	/* numeric shift  cursors vs. numeric */
#define	CAPS		0x0004	/* caps shift -- swaps case of letter */
#define	SHIFT		0x0008	/* keyboard shift */
#define	CTL		0x0010	/* control shift  -- allows ctl function */
#define	ASCII		0x0020	/* ascii code for this key */
#define	ALTGR		0x0040	/* alt graphic */
#define	ALT		0x0080	/* alternate shift -- alternate chars */
#define	FUNC		0x0100	/* function key */
#define	KP		0x0200	/* Keypad keys */
#define	NONE		0x0400	/* no function */

static unsigned int addr_6845 = MONO_BASE;

char *sget __P((void));
void sput __P((u_char *, int));

void	pcstart();
int	pcparam();
char	partab[];

extern pcopen(dev_t, int, int, struct proc *);

#define	KBD_DELAY \
		DELAY(10);

static inline int
kbd_wait_output()
{
	u_int i;

	for (i = 100000; i; i--)
		if ((inb(KBSTATP) & KBS_IBF) == 0) {
			KBD_DELAY;
			return 1;
		}
	return 0;
}

static inline int
kbd_wait_input()
{
	u_int i;

	for (i = 100000; i; i--)
		if ((inb(KBSTATP) & KBS_DIB) != 0) {
			KBD_DELAY;
			return 1;
		}
	return 0;
}

static inline void
kbd_flush_input()
{
	u_char c;

	while (c = inb(KBSTATP) & 0x03)
		if ((c & KBS_DIB) == KBS_DIB) {
			/* XXX - delay is needed to prevent some keyboards from
			   wedging when the system boots */
			delay(6);
			(void) inb(KBDATAP);
		}
}


#if 1
/*
 * Get the current command byte.
 */
static u_char
kbc_get8042cmd()
{

	if (!kbd_wait_output())
		return -1;
	outb(KBCMDP, K_RDCMDBYTE);
	if (!kbd_wait_input())
		return -1;
	return inb(KBDATAP);
}
#endif

/*
 * Pass command byte to keyboard controller (8042).
 */
static int
kbc_put8042cmd(val)
	u_char val;
{

	if (!kbd_wait_output())
		return 0;
	outb(KBCMDP, K_LDCMDBYTE);
	if (!kbd_wait_output())
		return 0;
	outb(KBOUTP, val);
	return 1;
}

/*
 * Pass command to keyboard itself
 */
int
kbd_cmd(val, polling)
	u_char val;
	u_char polling;
{
	u_int retries = 3;
	register u_int i;

	if(!polling) {
		i = spltty();
		if(kb_oq_get == kb_oq_put) {
			outb(KBOUTP, val);
		}
		kb_oq[kb_oq_put] = val;
		kb_oq_put = (kb_oq_put + 1) & 7;
		splx(i);
		return(1);
	}
	else do {
		if (!kbd_wait_output())
			return 0;
		outb(KBOUTP, val);
		for (i = 100000; i; i--) {
			if (inb(KBSTATP) & KBS_DIB) {
				register u_char c;

				KBD_DELAY;
				c = inb(KBDATAP);
				if (c == KBR_ACK || c == KBR_ECHO) {
					return 1;
				}
				if (c == KBR_RESEND) {
					break;
				}
#ifdef DIAGNOSTIC
				printf("kbd_cmd: input char %x lost\n", c);
#endif
			}
		}
	} while (--retries);
	return 0;
}

void
set_cursor_shape()
{
	register int iobase = addr_6845;

	outb(iobase, 10);
	outb(iobase+1, cursor_shape >> 8);
	outb(iobase, 11);
	outb(iobase+1, cursor_shape);
	old_cursor_shape = cursor_shape;
}

void
get_cursor_shape()
{
	register int iobase = addr_6845;

	outb(iobase, 10);
	cursor_shape = inb(iobase+1) << 8;
	outb(iobase, 11);
	cursor_shape |= inb(iobase+1);

	/*
	 * real 6845's, as found on, MDA, Hercules or CGA cards, do
	 * not support reading the cursor shape registers. the 6845
	 * tri-states it's data bus. This is _normally_ read by the
	 * cpu as either 0x00 or 0xff.. in which case we just use
	 * a line cursor.
	 */
	if (cursor_shape == 0x0000 || cursor_shape == 0xffff)
		cursor_shape = 0x0b10;
	else
		cursor_shape &= 0x1f1f;
}

void
do_async_update(poll)
	u_char poll;
{
	int pos;
	static int old_pos = -1;

	async = 0;

	if (lock_state != old_lock_state) {
		old_lock_state = lock_state;
		if (!kbd_cmd(KBC_MODEIND, poll) ||
		    !kbd_cmd(lock_state, poll)) {
			printf("pc: timeout updating leds\n");
			(void) kbd_cmd(KBC_ENABLE, poll);
		}
	}
	if (typematic_rate != old_typematic_rate) {
		old_typematic_rate = typematic_rate;
		if (!kbd_cmd(KBC_TYPEMATIC, poll) ||
		    !kbd_cmd(typematic_rate, poll)) {
			printf("pc: timeout updating typematic rate\n");
			(void) kbd_cmd(KBC_ENABLE, poll);
		}
	}

	if (pc_xmode > 0)
		return;

	pos = crtat - Crtat;
	if (pos != old_pos) {
		register int iobase = addr_6845;
		outb(iobase, 14);
		outb(iobase+1, pos >> 8);
		outb(iobase, 15);
		outb(iobase+1, pos);
		old_pos = pos;
	}
	if (cursor_shape != old_cursor_shape)
		set_cursor_shape();
}

void
async_update()
{

	if (kernel || polling) {
		if (async)
			untimeout(do_async_update, NULL);
		do_async_update(1);
	} else {
		if (async)
			return;
		async = 1;
		timeout(do_async_update, NULL, 1);
	}
}

/*
 * these are both bad jokes
 */
int
pcmatch(parent, cfdata, aux)
	struct device *parent;
	void *cfdata, *aux;
{
	struct confargs *ca = aux;
	u_int i;

	/* Make shure we're looking for this type of device */
	if(!BUS_MATCHNAME(ca, "pc"))
		return(0);

	/* Enable interrupts and keyboard, etc. */
	if (!kbc_put8042cmd(CMDBYTE)) {
		printf("pcmatch: command error\n");
		return 0;
	}

#if 1
	/* Flush any garbage. */
	kbd_flush_input();
	/* Reset the keyboard. */
	if (!kbd_cmd(KBC_RESET, 1)) {
		printf("pcmatch: reset error %d\n", 1);
		goto lose;
	}
	for (i = 600000; i; i--)
		if ((inb(KBSTATP) & KBS_DIB) != 0) {
			KBD_DELAY;
			break;
		}
	if (i == 0 || inb(KBDATAP) != KBR_RSTDONE) {
		printf("pcmatch: reset error %d\n", 2);
		goto lose;
	}
	/*
	 * Some keyboards seem to leave a second ack byte after the reset.
	 * This is kind of stupid, but we account for them anyway by just
	 * flushing the buffer.
	 */
	kbd_flush_input();
	/* Just to be sure. */
	if (!kbd_cmd(KBC_ENABLE, 1)) {
		printf("pcmatch: reset error %d\n", 3);
		goto lose;
	}

	/*
	 * Some keyboard/8042 combinations do not seem to work if the keyboard
	 * is set to table 1; in fact, it would appear that some keyboards just
	 * ignore the command altogether.  So by default, we use the AT scan
	 * codes and have the 8042 translate them.  Unfortunately, this is
	 * known to not work on some PS/2 machines.  We try desparately to deal
	 * with this by checking the (lack of a) translate bit in the 8042 and
	 * attempting to set the keyboard to XT mode.  If this all fails, well,
	 * tough luck.
	 *
	 * XXX It would perhaps be a better choice to just use AT scan codes
	 * and not bother with this.
	 */
	if (kbc_get8042cmd() & KC8_TRANS) {
		/* The 8042 is translating for us; use AT codes. */
		if (!kbd_cmd(KBC_SETTABLE, 1) || !kbd_cmd(2, 1)) {
			printf("pcmatch: reset error %d\n", 4);
			goto lose;
		}
	} else {
		/* Stupid 8042; set keyboard to XT codes. */
		if (!kbd_cmd(KBC_SETTABLE, 1) || !kbd_cmd(1, 1)) {
			printf("pcmatch: reset error %d\n", 5);
			goto lose;
		}
	}

lose:
	/*
	 * Technically, we should probably fail the match.  But we'll be nice
	 * and allow keyboard-less machines to boot with the console.
	 */
#endif

	return 1;
}

void
pcattach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct confargs *ca = aux;
	struct pc_softc *sc = (void *)self;

	printf(": %s\n", vs.color ? "color" : "mono");
	do_async_update(1);

	BUS_INTR_ESTABLISH(ca, pcintr, (void *)(long)sc);
}

int
pcopen(dev, flag, mode, p)
	dev_t dev;
	int flag, mode;
	struct proc *p;
{
	struct pc_softc *sc;
	int unit = PCUNIT(dev);
	struct tty *tp;

	if (unit >= pc_cd.cd_ndevs)
		return ENXIO;
	sc = pc_cd.cd_devs[unit];
	if (sc == 0)
		return ENXIO;

	if (!sc->sc_tty) {
		tp = sc->sc_tty = ttymalloc();
	}
	else {
		tp = sc->sc_tty;
	}

	tp->t_oproc = pcstart;
	tp->t_param = pcparam;
	tp->t_dev = dev;
	if ((tp->t_state & TS_ISOPEN) == 0) {
		tp->t_state |= TS_WOPEN;
		ttychars(tp);
		tp->t_iflag = TTYDEF_IFLAG;
		tp->t_oflag = TTYDEF_OFLAG;
		tp->t_cflag = TTYDEF_CFLAG;
		tp->t_lflag = TTYDEF_LFLAG;
		tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
		pcparam(tp, &tp->t_termios);
		ttsetwater(tp);
	} else if (tp->t_state&TS_XCLUDE && p->p_ucred->cr_uid != 0)
		return EBUSY;
	tp->t_state |= TS_CARR_ON;

	return ((*linesw[tp->t_line].l_open)(dev, tp));
}

int
pcclose(dev, flag, mode, p)
	dev_t dev;
	int flag, mode;
	struct proc *p;
{
	struct pc_softc *sc = pc_cd.cd_devs[PCUNIT(dev)];
	struct tty *tp = sc->sc_tty;

	(*linesw[tp->t_line].l_close)(tp, flag);
	ttyclose(tp);
#ifdef notyet /* XXX */
	ttyfree(tp);
#endif
	return(0);
}

int
pcread(dev, uio, flag)
	dev_t dev;
	struct uio *uio;
	int flag;
{
	struct pc_softc *sc = pc_cd.cd_devs[PCUNIT(dev)];
	struct tty *tp = sc->sc_tty;

	return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
}

int
pcwrite(dev, uio, flag)
	dev_t dev;
	struct uio *uio;
	int flag;
{
	struct pc_softc *sc = pc_cd.cd_devs[PCUNIT(dev)];
	struct tty *tp = sc->sc_tty;

	return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
}

struct tty *
pctty(dev)
	dev_t dev;
{
	struct pc_softc *sc = pc_cd.cd_devs[PCUNIT(dev)];
	struct tty *tp = sc->sc_tty;

	return (tp);
}

/*
 * Got a console receive interrupt -
 * the console processor wants to give us a character.
 * Catch the character, and see who it goes to.
 */
int
pcintr(arg)
	void *arg;
{
	struct pc_softc *sc = arg;
	register struct tty *tp = sc->sc_tty;
	u_char *cp;

	if ((inb(KBSTATP) & KBS_DIB) == 0)
		return 0;
	if (polling)
		return 1;
	do {
		cp = sget();
		if (!tp || (tp->t_state & TS_ISOPEN) == 0)
			return 1;
		if (cp)
			do
				(*linesw[tp->t_line].l_rint)(*cp++, tp);
			while (*cp);
	} while (inb(KBSTATP) & KBS_DIB);
	return 1;
}

int
pcioctl(dev, cmd, data, flag, p)
	dev_t dev;
	u_long cmd;
	caddr_t data;
	int flag;
	struct proc *p;
{
	struct pc_softc *sc = pc_cd.cd_devs[PCUNIT(dev)];
	struct tty *tp = sc->sc_tty;
	int error;

	error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
	if (error >= 0)
		return error;
	error = ttioctl(tp, cmd, data, flag, p);
	if (error >= 0)
		return error;

	switch (cmd) {
	case CONSOLE_X_MODE_ON:
		pc_xmode_on();
		return 0;
	case CONSOLE_X_MODE_OFF:
		pc_xmode_off();
		return 0;
	case CONSOLE_X_BELL:
		/*
		 * If set, data is a pointer to a length 2 array of
		 * integers.  data[0] is the pitch in Hz and data[1]
		 * is the duration in msec.
		 */
		if (data)
			sysbeep(((int*)data)[0],
				(((int*)data)[1] * hz) / 1000);
		else
			sysbeep(BEEP_FREQ, BEEP_TIME);
		return 0;
	case CONSOLE_SET_TYPEMATIC_RATE: {
 		u_char	rate;

 		if (!data)
			return EINVAL;
		rate = *((u_char *)data);
		/*
		 * Check that it isn't too big (which would cause it to be
		 * confused with a command).
		 */
		if (rate & 0x80)
			return EINVAL;
		typematic_rate = rate;
		async_update();
		return 0;
 	}
	default:
		return ENOTTY;
	}

#ifdef DIAGNOSTIC
	panic("pcioctl: impossible");
#endif
}

void
pcstart(tp)
	struct tty *tp;
{
	struct clist *cl;
	int s, len, n;
	u_char buf[PCBURST];

	s = spltty();
	if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))
		goto out;
	tp->t_state |= TS_BUSY;
	splx(s);
	/*
	 * We need to do this outside spl since it could be fairly
	 * expensive and we don't want our serial ports to overflow.
	 */
	cl = &tp->t_outq;
	len = q_to_b(cl, buf, PCBURST);
	sput(buf, len);
	s = spltty();
	tp->t_state &= ~TS_BUSY;
	if (cl->c_cc) {
		tp->t_state |= TS_TIMEOUT;
		timeout(ttrstrt, tp, 1);
	}
	if (cl->c_cc <= tp->t_lowat) {
		if (tp->t_state & TS_ASLEEP) {
			tp->t_state &= ~TS_ASLEEP;
			wakeup(cl);
		}
		selwakeup(&tp->t_wsel);
	}
out:
	splx(s);
}

void
pcstop(tp, flag)
	struct tty *tp;
	int flag;
{

}

void
pccnprobe(cp)
	struct consdev *cp;
{
	int maj;

	/* locate the major number */
	for (maj = 0; maj < nchrdev; maj++)
		if (cdevsw[maj].d_open == pcopen)
			break;

	/* initialize required fields */
	cp->cn_dev = makedev(maj, 0);
	cp->cn_pri = CN_INTERNAL;
}

/* ARGSUSED */
void
pccninit(cp)
	struct consdev *cp;
{

	/*
	 * For now, don't screw with it.
	 */
	/* crtat = 0; */
}

/* ARGSUSED */
void
pccnputc(dev, c)
	dev_t dev;
	char c;
{
	u_char oldkernel = kernel;

	kernel = 1;
	if (c == '\n')
		sput("\r\n", 2);
	else
		sput(&c, 1);
	kernel = oldkernel;
}

/* ARGSUSED */
pccngetc(dev)
	dev_t dev;
{
	register char *cp;

	if (pc_xmode > 0)
		return 0;

	do {
		/* wait for byte */
		while ((inb(KBSTATP) & KBS_DIB) == 0);
		/* see if it's worthwhile */
		cp = sget();
	} while (!cp);
	if (*cp == '\r')
		return '\n';
	return *cp;
}

void
pccnpollc(dev, on)
	dev_t dev;
	int on;
{

	polling = on;
	if (!on) {
		int unit;
		struct pc_softc *sc;
		int s;

		/*
		 * If disabling polling on a device that's been configured,
		 * make sure there are no bytes left in the FIFO, holding up
		 * the interrupt line.  Otherwise we won't get any further
		 * interrupts.
		 */
		unit = PCUNIT(dev);
		if (pc_cd.cd_ndevs > unit) {
			sc = pc_cd.cd_devs[unit];
			if (sc != 0) {
				s = spltty();
				pcintr(sc);
				splx(s);
			}
		}
	}
}	

/*
 * Set line parameters.
 */
int
pcparam(tp, t)
	struct tty *tp;
	struct termios *t;
{

	tp->t_ispeed = t->c_ispeed;
	tp->t_ospeed = t->c_ospeed;
	tp->t_cflag = t->c_cflag;
	return 0;
}

#define	wrtchar(c, at) do {\
	char *cp = (char *)crtat; *cp++ = (c); *cp = (at); crtat++; vs.col++; \
} while (0)

/* translate ANSI color codes to standard pc ones */
static char fgansitopc[] = {
	FG_BLACK, FG_RED, FG_GREEN, FG_BROWN, FG_BLUE,
	FG_MAGENTA, FG_CYAN, FG_LIGHTGREY
};

static char bgansitopc[] = {
	BG_BLACK, BG_RED, BG_GREEN, BG_BROWN, BG_BLUE,
	BG_MAGENTA, BG_CYAN, BG_LIGHTGREY
};

static u_char iso2ibm437[] =
{     
            0,     0,     0,     0,     0,     0,     0,     0,
            0,     0,     0,     0,     0,     0,     0,     0,
            0,     0,     0,     0,     0,     0,     0,     0,
            0,     0,     0,     0,     0,     0,     0,     0,
         0xff,  0xad,  0x9b,  0x9c,     0,  0x9d,     0,  0x40,
         0x6f,  0x63,  0x61,  0xae,     0,     0,     0,     0,
         0xf8,  0xf1,  0xfd,  0x33,     0,  0xe6,     0,  0xfa,
            0,  0x31,  0x6f,  0xaf,  0xac,  0xab,     0,  0xa8,
         0x41,  0x41,  0x41,  0x41,  0x8e,  0x8f,  0x92,  0x80,
         0x45,  0x90,  0x45,  0x45,  0x49,  0x49,  0x49,  0x49,
         0x81,  0xa5,  0x4f,  0x4f,  0x4f,  0x4f,  0x99,  0x4f,
         0x4f,  0x55,  0x55,  0x55,  0x9a,  0x59,     0,  0xe1,
         0x85,  0xa0,  0x83,  0x61,  0x84,  0x86,  0x91,  0x87,
         0x8a,  0x82,  0x88,  0x89,  0x8d,  0xa1,  0x8c,  0x8b,
            0,  0xa4,  0x95,  0xa2,  0x93,  0x6f,  0x94,  0x6f,
         0x6f,  0x97,  0xa3,  0x96,  0x81,  0x98,     0,     0
};

/*
 * `pc3' termcap emulation.
 */
void
sput(cp, n)
	u_char *cp;
	int n;
{
	u_char c, scroll = 0;

	if (pc_xmode > 0)
		return;

	if (crtat == 0) {
		u_short volatile *cp;
		u_short was;
		unsigned cursorat;

		cp = (u_short *)CGA_BUF;
		was = *cp;
		*cp = (u_short) 0xA55A;
		if (*cp != 0xA55A) {
			cp = (u_short *)MONO_BUF;
			addr_6845 = MONO_BASE;
			vs.color = 0;
		} else {
			*cp = was;
			addr_6845 = CGA_BASE;
			vs.color = 1;
		}

		/* Extract cursor location */
		outb(addr_6845, 14);
		cursorat = inb(addr_6845+1) << 8;
		outb(addr_6845, 15);
		cursorat |= inb(addr_6845+1);

#ifdef FAT_CURSOR
		cursor_shape = 0x0012;
#else
		get_cursor_shape();
#endif

		Crtat = (u_short *)cp;
		crtat = (u_short *)(cp + cursorat);

		vs.ncol = COL;
		vs.nrow = ROW;
		vs.nchr = COL * ROW;
		vs.at = FG_LIGHTGREY | BG_BLACK;

		if (vs.color == 0)
			vs.so_at = FG_BLACK | BG_LIGHTGREY;
		else
			vs.so_at = FG_YELLOW | BG_BLACK;

		fillw((vs.at << 8) | ' ', crtat, vs.nchr - cursorat);
	}

	while (n--) {
		if (!(c = *cp++))
			continue;

		switch (c) {
		case 0x1B:
			if (vs.state >= VSS_ESCAPE) {
				wrtchar(c, vs.so_at); 
				vs.state = 0;
				goto maybe_scroll;
			} else
				vs.state = VSS_ESCAPE;
			break;

		case '\t': {
			int inccol = 8 - (vs.col & 7);
			crtat += inccol;
			vs.col += inccol;
		}
		maybe_scroll:
			if (vs.col >= COL) {
				vs.col -= COL;
				scroll = 1;
			}
			break;

		case '\010':
			if (crtat <= Crtat)
				break;
			--crtat;
			if (--vs.col < 0)
				vs.col += COL;	/* non-destructive backspace */
			break;

		case '\r':
			crtat -= vs.col;
			vs.col = 0;
			break;

		case '\n':
			crtat += vs.ncol;
			scroll = 1;
			break;

		default:
		bypass:
			switch (vs.state) {
			case 0:
				if (c == '\a')
					sysbeep(BEEP_FREQ, BEEP_TIME);
				else {
					/*
					 * If we're outputting multiple printed
					 * characters, just blast them to the
					 * screen until we reach the end of the
					 * buffer or a control character.  This
					 * saves time by short-circuiting the
					 * switch.
					 * If we reach the end of the line, we
					 * break to do a scroll check.
					 */
					for (;;) {
						if (c & 0x80)
							c = iso2ibm437[c&0x7f];

						if (vs.so)
							wrtchar(c, vs.so_at);
						else
							wrtchar(c, vs.at);
						if (vs.col >= vs.ncol) {
							vs.col = 0;
							scroll = 1;
							break;
						}
						if (!n || (c = *cp) < ' ')
							break;
						n--, cp++;
					}
				}
				break;
			case VSS_ESCAPE:
				if (c == '[') {	/* Start ESC [ sequence */
					vs.cx = vs.cy = 0;
					vs.state = VSS_EBRACE;
				} else if (c == 'c') { /* Clear screen & home */
					fillw((vs.at << 8) | ' ', Crtat,
					    vs.nchr);
					crtat = Crtat;
					vs.col = 0;
					vs.state = 0;
				} else { /* Invalid, clear state */
					wrtchar(c, vs.so_at); 
					vs.state = 0;
					goto maybe_scroll;
				}
				break;
			default: /* VSS_EBRACE or VSS_EPARAM */
				switch (c) {
					int pos;
				case 'm':
					if (!vs.cx)
						vs.so = 0;
					else
						vs.so = 1;
					vs.state = 0;
					break;
				case 'A': { /* back cx rows */
					int cx = vs.cx;
					if (cx <= 0)
						cx = 1;
					else
						cx %= vs.nrow;
					pos = crtat - Crtat;
					pos -= vs.ncol * cx;
					if (pos < 0)
						pos += vs.nchr;
					crtat = Crtat + pos;
					vs.state = 0;
					break;
				}
				case 'B': { /* down cx rows */
					int cx = vs.cx;
					if (cx <= 0)
						cx = 1;
					else
						cx %= vs.nrow;
					pos = crtat - Crtat;
					pos += vs.ncol * cx;
					if (pos >= vs.nchr) 
						pos -= vs.nchr;
					crtat = Crtat + pos;
					vs.state = 0;
					break;
				}
				case 'C': { /* right cursor */
					int cx = vs.cx,
					    col = vs.col;
					if (cx <= 0)
						cx = 1;
					else
						cx %= vs.ncol;
					pos = crtat - Crtat;
					pos += cx;
					col += cx;
					if (col >= vs.ncol) {
						pos -= vs.ncol;
						col -= vs.ncol;
					}
					vs.col = col;
					crtat = Crtat + pos;
					vs.state = 0;
					break;
				}
				case 'D': { /* left cursor */
					int cx = vs.cx,
					    col = vs.col;
					if (cx <= 0)
						cx = 1;
					else
						cx %= vs.ncol;
					pos = crtat - Crtat;
					pos -= cx;
					col -= cx;
					if (col < 0) {
						pos += vs.ncol;
						col += vs.ncol;
					}
					vs.col = col;
					crtat = Crtat + pos;
					vs.state = 0;
					break;
				}
				case 'J': /* Clear ... */
					switch (vs.cx) {
					case 0:
						/* ... to end of display */
						fillw((vs.at << 8) | ' ', crtat,
						    Crtat + vs.nchr - crtat);
						break;
					case 1:
						/* ... to next location */
						fillw((vs.at << 8) | ' ', Crtat,
						    crtat - Crtat + 1);
						break;
					case 2:
						/* ... whole display */
						fillw((vs.at << 8) | ' ', Crtat,
						    vs.nchr);
						break;
					}
					vs.state = 0;
					break;
				case 'K': /* Clear line ... */
					switch (vs.cx) {
					case 0:
						/* ... current to EOL */
						fillw((vs.at << 8) | ' ', crtat,
						    vs.ncol - vs.col);
						break;
					case 1:
						/* ... beginning to next */
						fillw((vs.at << 8) | ' ',
						    crtat - vs.col,
						    vs.col + 1);
						break;
					case 2:
						/* ... entire line */
						fillw((vs.at << 8) | ' ',
						    crtat - vs.col, vs.ncol);
						break;
					}
					vs.state = 0;
					break;
				case 'f': /* in system V consoles */
				case 'H': { /* Cursor move */
					int cx = vs.cx,
					    cy = vs.cy;
					if (!cx || !cy) {
						crtat = Crtat;
						vs.col = 0;
					} else {
						if (cx > vs.nrow)
							cx = vs.nrow;
						if (cy > vs.ncol)
							cy = vs.ncol;
						crtat = Crtat +
						    (cx - 1) * vs.ncol + cy - 1;
						vs.col = cy - 1;
					}
					vs.state = 0;
					break;
				}
				case 'M': { /* delete cx rows */
					u_short *crtAt = crtat - vs.col;
					int cx = vs.cx,
					    row = (crtAt - Crtat) / vs.ncol,
					    nrow = vs.nrow - row;
					if (cx <= 0)
						cx = 1;
					else if (cx > nrow)
						cx = nrow;
					if (cx < nrow)
						bcopy(crtAt + vs.ncol * cx,
						    crtAt, vs.ncol * (nrow -
						    cx) * CHR);
					fillw((vs.at << 8) | ' ',
					    crtAt + vs.ncol * (nrow - cx),
					    vs.ncol * cx);
					vs.state = 0;
					break;
				}
				case 'S': { /* scroll up cx lines */
					int cx = vs.cx;
					if (cx <= 0)
						cx = 1;
					else if (cx > vs.nrow)
						cx = vs.nrow;
					if (cx < vs.nrow)
						bcopy(Crtat + vs.ncol * cx,
						    Crtat, vs.ncol * (vs.nrow -
						    cx) * CHR);
					fillw((vs.at << 8) | ' ',
					    Crtat + vs.ncol * (vs.nrow - cx),
					    vs.ncol * cx);
					/* crtat -= vs.ncol * cx; /* XXX */
					vs.state = 0;
					break;
				}
				case 'L': { /* insert cx rows */
					u_short *crtAt = crtat - vs.col;
					int cx = vs.cx,
					    row = (crtAt - Crtat) / vs.ncol,
					    nrow = vs.nrow - row;
					if (cx <= 0)
						cx = 1;
					else if (cx > nrow)
						cx = nrow;
					if (cx < nrow)
						bcopy(crtAt,
						    crtAt + vs.ncol * cx,
						    vs.ncol * (nrow - cx) *
						    CHR);
					fillw((vs.at << 8) | ' ', crtAt,
					    vs.ncol * cx);
					vs.state = 0;
					break;
				}
				case 'T': { /* scroll down cx lines */
					int cx = vs.cx;
					if (cx <= 0)
						cx = 1;
					else if (cx > vs.nrow)
						cx = vs.nrow;
					if (cx < vs.nrow)
						bcopy(Crtat,
						    Crtat + vs.ncol * cx,
						    vs.ncol * (vs.nrow - cx) *
						    CHR);
					fillw((vs.at << 8) | ' ', Crtat,
					    vs.ncol * cx);
					/* crtat += vs.ncol * cx; /* XXX */
					vs.state = 0;
					break;
				}
				case ';': /* Switch params in cursor def */
					vs.state = VSS_EPARAM;
					break;
				case 'r':
					vs.so_at = (vs.cx & FG_MASK) |
					    ((vs.cy << 4) & BG_MASK);
					vs.state = 0;
					break;
				case 'x': /* set attributes */
					switch (vs.cx) {
					case 0:
						vs.at = FG_LIGHTGREY | BG_BLACK;
						break;
					case 1:
						/* ansi background */
						if (!vs.color)
							break;
						vs.at &= FG_MASK;
						vs.at |= bgansitopc[vs.cy & 7];
						break;
					case 2:
						/* ansi foreground */
						if (!vs.color)
							break;
						vs.at &= BG_MASK;
						vs.at |= fgansitopc[vs.cy & 7];
						break;
					case 3:
						/* pc text attribute */
						if (vs.state >= VSS_EPARAM)
							vs.at = vs.cy;
						break;
					}
					vs.state = 0;
					break;
					
				default: /* Only numbers valid here */
					if ((c >= '0') && (c <= '9')) {
						if (vs.state >= VSS_EPARAM) {
							vs.cy *= 10;
							vs.cy += c - '0';
						} else {
							vs.cx *= 10;
							vs.cx += c - '0';
						}
					} else
						vs.state = 0;
					break;
				}
				break;
			}
		}
		if (scroll) {
			scroll = 0;
			/* scroll check */
			if (crtat >= Crtat + vs.nchr) {
				if (!kernel) {
					int s = spltty();
					if (lock_state & SCROLL)
						tsleep((caddr_t)&lock_state,
						    PUSER, "pcputc", 0);
					splx(s);
				}
				bcopy(Crtat + vs.ncol, Crtat,
				    (vs.nchr - vs.ncol) * CHR);
				fillw((vs.at << 8) | ' ',
				    Crtat + vs.nchr - vs.ncol, vs.ncol);
				crtat -= vs.ncol;
			}
		}
	}
	async_update();
}

#define	CODE_SIZE	4		/* Use a max of 4 for now... */
typedef struct {
	u_short	type;
	char unshift[CODE_SIZE];
	char shift[CODE_SIZE];
	char ctl[CODE_SIZE];
	char altgr[CODE_SIZE];
} Scan_def;

static Scan_def	us_scan_codes[] = {
    NONE,     "",         "",         "",         "",    /* 0 unused */
    ASCII,    "\033",     "\033",     "\033",     "",    /* 1 ESCape */
    ASCII,    "1",        "!",        "!",        "",    /* 2 1 */
    ASCII,    "2",        "@",        "\000",     "",    /* 3 2 */
    ASCII,    "3",        "#",        "#",        "",    /* 4 3 */
    ASCII,    "4",        "$",        "$",        "",    /* 5 4 */
    ASCII,    "5",        "%",        "%",        "",    /* 6 5 */
    ASCII,    "6",        "^",        "\036",     "",    /* 7 6 */
    ASCII,    "7",        "&",        "&",        "",    /* 8 7 */
    ASCII,    "8",        "*",        "\010",     "",    /* 9 8 */
    ASCII,    "9",        "(",        "(",        "",    /* 10 9 */
    ASCII,    "0",        ")",        ")",        "",    /* 11 0 */
    ASCII,    "-",        "_",        "\037",     "",    /* 12 - */
    ASCII,    "=",        "+",        "+",        "",    /* 13 = */
    ASCII,    "\177",     "\177",     "\010",     "",    /* 14 backspace */
    ASCII,    "\t",       "\177\t",   "\t",       "",    /* 15 tab */
    ASCII,    "q",        "Q",        "\021",     "",    /* 16 q */
    ASCII,    "w",        "W",        "\027",     "",    /* 17 w */
    ASCII,    "e",        "E",        "\005",     "",    /* 18 e */
    ASCII,    "r",        "R",        "\022",     "",    /* 19 r */
    ASCII,    "t",        "T",        "\024",     "",    /* 20 t */
    ASCII,    "y",        "Y",        "\031",     "",    /* 21 y */
    ASCII,    "u",        "U",        "\025",     "",    /* 22 u */
    ASCII,    "i",        "I",        "\011",     "",    /* 23 i */
    ASCII,    "o",        "O",        "\017",     "",    /* 24 o */
    ASCII,    "p",        "P",        "\020",     "",    /* 25 p */
    ASCII,    "[",        "{",        "\033",     "",    /* 26 [ */
    ASCII,    "]",        "}",        "\035",     "",    /* 27 ] */
    ASCII,    "\r",       "\r",       "\n",       "",    /* 28 return */
    CTL,      "",         "",         "",         "",    /* 29 control */
    ASCII,    "a",        "A",        "\001",     "",    /* 30 a */
    ASCII,    "s",        "S",        "\023",     "",    /* 31 s */
    ASCII,    "d",        "D",        "\004",     "",    /* 32 d */
    ASCII,    "f",        "F",        "\006",     "",    /* 33 f */
    ASCII,    "g",        "G",        "\007",     "",    /* 34 g */
    ASCII,    "h",        "H",        "\010",     "",    /* 35 h */
    ASCII,    "j",        "J",        "\n",       "",    /* 36 j */
    ASCII,    "k",        "K",        "\013",     "",    /* 37 k */
    ASCII,    "l",        "L",        "\014",     "",    /* 38 l */
    ASCII,    ";",        ":",        ";",        "",    /* 39 ; */
    ASCII,    "'",        "\"",       "'",        "",    /* 40 ' */
    ASCII,    "`",        "~",        "`",        "",    /* 41 ` */
    SHIFT,    "",         "",         "",         "",    /* 42 shift */
    ASCII,    "\\",       "|",        "\034",     "",    /* 43 \ */
    ASCII,    "z",        "Z",        "\032",     "",    /* 44 z */
    ASCII,    "x",        "X",        "\030",     "",    /* 45 x */
    ASCII,    "c",        "C",        "\003",     "",    /* 46 c */
    ASCII,    "v",        "V",        "\026",     "",    /* 47 v */
    ASCII,    "b",        "B",        "\002",     "",    /* 48 b */
    ASCII,    "n",        "N",        "\016",     "",    /* 49 n */
    ASCII,    "m",        "M",        "\r",       "",    /* 50 m */
    ASCII,    ",",        "<",        "<",        "",    /* 51 , */
    ASCII,    ".",        ">",        ">",        "",    /* 52 . */
    ASCII,    "/",        "?",        "\037",     "",    /* 53 / */
    SHIFT,    "",         "",         "",         "",    /* 54 shift */
    KP,       "*",        "*",        "*",        "",    /* 55 kp * */
    ALT,      "",         "",         "",         "",    /* 56 alt */
    ASCII,    " ",        " ",        "\000",     "",    /* 57 space */
    CAPS,     "",         "",         "",         "",    /* 58 caps */
    FUNC,     "\033[M",   "\033[Y",   "\033[k",   "",    /* 59 f1 */
    FUNC,     "\033[N",   "\033[Z",   "\033[l",   "",    /* 60 f2 */
    FUNC,     "\033[O",   "\033[a",   "\033[m",   "",    /* 61 f3 */
    FUNC,     "\033[P",   "\033[b",   "\033[n",   "",    /* 62 f4 */
    FUNC,     "\033[Q",   "\033[c",   "\033[o",   "",    /* 63 f5 */
    FUNC,     "\033[R",   "\033[d",   "\033[p",   "",    /* 64 f6 */
    FUNC,     "\033[S",   "\033[e",   "\033[q",   "",    /* 65 f7 */
    FUNC,     "\033[T",   "\033[f",   "\033[r",   "",    /* 66 f8 */
    FUNC,     "\033[U",   "\033[g",   "\033[s",   "",    /* 67 f9 */
    FUNC,     "\033[V",   "\033[h",   "\033[t",   "",    /* 68 f10 */
    NUM,      "",         "",         "",	  "",    /* 69 num lock */
    SCROLL,   "",         "",         "",         "",    /* 70 scroll lock */
    KP,       "7",        "\033[H",   "7",        "",    /* 71 kp 7 */
    KP,       "8",        "\033[A",   "8",        "",    /* 72 kp 8 */
    KP,       "9",        "\033[I",   "9",        "",    /* 73 kp 9 */
    KP,       "-",        "-",        "-",        "",    /* 74 kp - */
    KP,       "4",        "\033[D",   "4",        "",    /* 75 kp 4 */
    KP,       "5",        "\033[E",   "5",        "",    /* 76 kp 5 */
    KP,       "6",        "\033[C",   "6",        "",    /* 77 kp 6 */
    KP,       "+",        "+",        "+",        "",    /* 78 kp + */
    KP,       "1",        "\033[F",   "1",        "",    /* 79 kp 1 */
    KP,       "2",        "\033[B",   "2",        "",    /* 80 kp 2 */
    KP,       "3",        "\033[G",   "3",        "",    /* 81 kp 3 */
    KP,       "0",        "\033[L",   "0",        "",    /* 82 kp 0 */
    KP,       ".",        "\177",     ".",        "",    /* 83 kp . */
    NONE,     "",         "",         "",         "",    /* 84 0 */
    NONE,     "100",      "",         "",         "",    /* 85 0 */
    NONE,     "101",      "",         "",         "",    /* 86 0 */
    FUNC,     "\033[W",   "\033[i",   "\033[u",   "",    /* 87 f11 */
    FUNC,     "\033[X",   "\033[j",   "\033[v",   "",    /* 88 f12 */
    NONE,     "102",      "",         "",         "",    /* 89 0 */
    NONE,     "103",      "",         "",         "",    /* 90 0 */
    NONE,     "",         "",         "",         "",    /* 91 0 */
    NONE,     "",         "",         "",         "",    /* 92 0 */
    NONE,     "",         "",         "",         "",    /* 93 0 */
    NONE,     "",         "",         "",         "",    /* 94 0 */
    NONE,     "",         "",         "",         "",    /* 95 0 */
    NONE,     "",         "",         "",         "",    /* 96 0 */
    NONE,     "",         "",         "",         "",    /* 97 0 */
    NONE,     "",         "",         "",         "",    /* 98 0 */
    NONE,     "",         "",         "",         "",    /* 99 0 */
    NONE,     "",         "",         "",         "",    /* 100 */
    NONE,     "",         "",         "",         "",    /* 101 */
    NONE,     "",         "",         "",         "",    /* 102 */
    NONE,     "",         "",         "",         "",    /* 103 */
    NONE,     "",         "",         "",         "",    /* 104 */
    NONE,     "",         "",         "",         "",    /* 105 */
    NONE,     "",         "",         "",         "",    /* 106 */
    NONE,     "",         "",         "",         "",    /* 107 */
    NONE,     "",         "",         "",         "",    /* 108 */
    NONE,     "",         "",         "",         "",    /* 109 */
    NONE,     "",         "",         "",         "",    /* 110 */
    NONE,     "",         "",         "",         "",    /* 111 */
    NONE,     "",         "",         "",         "",    /* 112 */
    NONE,     "",         "",         "",         "",    /* 113 */
    NONE,     "",         "",         "",         "",    /* 114 */
    NONE,     "",         "",         "",         "",    /* 115 */
    NONE,     "",         "",         "",         "",    /* 116 */
    NONE,     "",         "",         "",         "",    /* 117 */
    NONE,     "",         "",         "",         "",    /* 118 */
    NONE,     "",         "",         "",         "",    /* 119 */
    NONE,     "",         "",         "",         "",    /* 120 */
    NONE,     "",         "",         "",         "",    /* 121 */
    NONE,     "",         "",         "",         "",    /* 122 */
    NONE,     "",         "",         "",         "",    /* 123 */
    NONE,     "",         "",         "",         "",    /* 124 */
    NONE,     "",         "",         "",         "",    /* 125 */
    NONE,     "",         "",         "",         "",    /* 126 */
    NONE,     "",         "",         "",         "",    /* 127 */
};

static Scan_def  sw_scan_codes[] = {
    NONE,     "",       "",       "",       "",     /* 0 unused */  
    ASCII,    "\033",   "\033",   "\033",   "\033", /* 1 ESCape */  
    ASCII,    "1",      "!",      "",       "\241", /* 2 1 */
    ASCII,    "2",      "\"",     "\000",   "@",    /* 3 2 */
    ASCII,    "3",      "#",      "",       "\243", /* 4 3 */
    ASCII,    "4",      "$",      "",       "$",    /* 5 4 */
    ASCII,    "5",      "%",      "\034",   "\\",   /* 6 5 */
    ASCII,    "6",      "&",      "\034",   "|",    /* 7 6 */
    ASCII,    "7",      "/",      "\033",   "{",    /* 8 7 */
    ASCII,    "8",      "(",      "\036",   "[",    /* 9 8 */
    ASCII,    "9",      ")",      "\035",   "]",    /* 10 9 */
    ASCII,    "0",      "=",      "\035",   "}",    /* 11 0 */
    ASCII,    "+",      "?",      "\037",   "\\",   /* 12 - */
    ASCII,    "'",      "`",      "\034",   "'",    /* 13 = */
    ASCII,    "\177",   "\177",   "\010",   "\177", /* 14 backspace */ 
    ASCII,    "\t",     "\177\t", "\t",     "\t",   /* 15 tab */    
    ASCII,    "q",      "Q",      "\021",   "q",    /* 16 q */
    ASCII,    "w",      "W",      "\027",   "w",    /* 17 w */
    ASCII,    "e",      "E",      "\005",   "\353", /* 18 e */
    ASCII,    "r",      "R",      "\022",   "r",    /* 19 r */
    ASCII,    "t",      "T",      "\024",   "t",    /* 20 t */
    ASCII,    "y",      "Y",      "\031",   "y",    /* 21 y */
    ASCII,    "u",      "U",      "\025",   "\374", /* 22 u */
    ASCII,    "i",      "I",      "\011",   "i",    /* 23 i */
    ASCII,    "o",      "O",      "\017",   "\364", /* 24 o */
    ASCII,    "p",      "P",      "\020",   "p",    /* 25 p */
    ASCII,    "\345",   "\305",   "\334",   "\374", /* 26 [ */
    ASCII,    "~",      "^",      "\036",   "",     /* 27 ] */
    ASCII,    "\r",     "\r",     "\n",     "\r",   /* 28 return */ 
    CTL,      "",       "",       "",       "",     /* 29 control */
    ASCII,    "a",      "A",      "\001",   "\344", /* 30 a */
    ASCII,    "s",      "S",      "\023",   "\337", /* 31 s */
    ASCII,    "d",      "D",      "\004",   "d",    /* 32 d */
    ASCII,    "f",      "F",      "\006",   "f",    /* 33 f */
    ASCII,    "g",      "G",      "\007",   "g",    /* 34 g */
    ASCII,    "h",      "H",      "\010",   "h",    /* 35 h */
    ASCII,    "j",      "J",      "\n",     "j",    /* 36 j */
    ASCII,    "k",      "K",      "\013",   "k",    /* 37 k */
    ASCII,    "l",      "L",      "\014",   "l",    /* 38 l */
    ASCII,    "\366",   "\326",   "\326",   "\366", /* 39 ; */
    ASCII,    "\344",   "\304",   "\304",   "\344", /* 40 ' */
    ASCII,    "|",      "@",      "\034",   "\247", /* 41 ` */
    SHIFT,    "",       "",       "",       "",     /* 42 shift */
    ASCII,    "'",      "*",      "'",      "'",    /* 43 \ */
    ASCII,    "z",      "Z",      "\032",   "z",    /* 44 z */
    ASCII,    "x",      "X",      "\030",   "x",    /* 45 x */
    ASCII,    "c",      "C",      "\003",   "c",    /* 46 c */
    ASCII,    "v",      "V",      "\026",   "v",    /* 47 v */
    ASCII,    "b",      "B",      "\002",   "b",    /* 48 b */
    ASCII,    "n",      "N",      "\016",   "n",    /* 49 n */
    ASCII,    "m",      "M",      "\015",   "m",    /* 50 m */
    ASCII,    ",",      ";",      ",",      ",",    /* 51 , */
    ASCII,    ".",      ":",      ".",      ".",    /* 52 . */
    ASCII,    "-",      "_",      "\037",   "-",    /* 53 / */
    SHIFT,    "",       "",       "",       "",     /* 54 shift */
    KP,       "*",      "*",      "*",      "*",    /* 55 kp * */
    ALT,      "",       "",       "",       "",     /* 56 alt */
    ASCII,    " ",      " ",      "\000",   " ",    /* 57 space */
    CAPS,     "",       "",       "",       "",     /* 58 caps */
    FUNC,     "\033[M", "\033[Y", "\033[k", "",     /* 59 f1 */
    FUNC,     "\033[N", "\033[Z", "\033[l", "",     /* 60 f2 */
    FUNC,     "\033[O", "\033[a", "\033[m", "",     /* 61 f3 */
    FUNC,     "\033[P", "\033[b", "\033[n", "",     /* 62 f4 */
    FUNC,     "\033[Q", "\033[c", "\033[o", "",     /* 63 f5 */
    FUNC,     "\033[R", "\033[d", "\033[p", "",     /* 64 f6 */
    FUNC,     "\033[S", "\033[e", "\033[q", "",     /* 65 f7 */
    FUNC,     "\033[T", "\033[f", "\033[r", "",     /* 66 f8 */
    FUNC,     "\033[U", "\033[g", "\033[s", "",     /* 67 f9 */
    FUNC,     "\033[V", "\033[h", "\033[t", "",     /* 68 f10 */
    NUM,      "",       "",       "",       "",     /* 69 num lo */
    SCROLL,   "",       "",       "",       "",     /* 70 scroll */
    KP,       "7",      "\033[H", "7",      "",     /* 71 kp 7 */
    KP,       "8",      "\033[A", "8",      "",     /* 72 kp 8 */
    KP,       "9",      "\033[I", "9",      "",     /* 73 kp 9 */
    KP,       "-",      "-",      "-",      "",     /* 74 kp - */
    KP,       "4",      "\033[D", "4",      "",     /* 75 kp 4 */
    KP,       "5",      "\033[E", "5",      "",     /* 76 kp 5 */
    KP,       "6",      "\033[C", "6",      "",     /* 77 kp 6 */
    KP,       "+",      "+",      "+",      "",     /* 78 kp + */
    KP,       "1",      "\033[F", "1",      "",     /* 79 kp 1 */
    KP,       "2",      "\033[B", "2",      "",     /* 80 kp 2 */
    KP,       "3",      "\033[G", "3",      "",     /* 81 kp 3 */
    KP,       "0",      "\033[L", "0",      "",     /* 82 kp 0 */
    KP,       ".",      "\177",   ".",      "",     /* 83 kp . */
    NONE,     "",       "",       "",       "",     /* 84 0 */
    NONE,     "100",    "",       "",       "",     /* 85 0 */
    ASCII,    "<",      ">",      "\273",   "|",    /* 86 < > */
    FUNC,     "\033[W", "\033[i", "\033[u", "",     /* 87 f11 */
    FUNC,     "\033[X", "\033[j", "\033[v", "",     /* 88 f12 */
    NONE,     "102",    "",       "",       "",     /* 89 0 */
    NONE,     "103",    "",       "",       "",     /* 90 0 */
    NONE,     "",       "",       "",       "",     /* 91 0 */
    NONE,     "",       "",       "",       "",     /* 92 0 */
    NONE,     "",       "",       "",       "",     /* 93 0 */
    NONE,     "",       "",       "",       "",     /* 94 0 */
    NONE,     "",       "",       "",       "",     /* 95 0 */
    NONE,     "",       "",       "",       "",     /* 96 0 */
    NONE,     "",       "",       "",       "",     /* 97 0 */
    NONE,     "",       "",       "",       "",     /* 98 0 */
    NONE,     "",       "",       "",       "",     /* 99 0 */
    NONE,     "",       "",       "",       "",     /* 100 */
    NONE,     "",       "",       "",       "",     /* 101 */
    NONE,     "",       "",       "",       "",     /* 102 */
    NONE,     "",       "",       "",       "",     /* 103 */
    NONE,     "",       "",       "",       "",     /* 104 */
    NONE,     "",       "",       "",       "",     /* 105 */
    NONE,     "",       "",       "",       "",     /* 106 */
    NONE,     "",       "",       "",       "",     /* 107 */
    NONE,     "",       "",       "",       "",     /* 108 */
    NONE,     "",       "",       "",       "",     /* 109 */
    NONE,     "",       "",       "",       "",     /* 110 */
    NONE,     "",       "",       "",       "",     /* 111 */
    NONE,     "",       "",       "",       "",     /* 112 */
    NONE,     "",       "",       "",       "",     /* 113 */
    NONE,     "",       "",       "",       "",     /* 114 */
    NONE,     "",       "",       "",       "",     /* 115 */
    NONE,     "",       "",       "",       "",     /* 116 */
    NONE,     "",       "",       "",       "",     /* 117 */
    NONE,     "",       "",       "",       "",     /* 118 */
    NONE,     "",       "",       "",       "",     /* 119 */
    NONE,     "",       "",       "",       "",     /* 120 */
    NONE,     "",       "",       "",       "",     /* 121 */
    NONE,     "",       "",       "",       "",     /* 122 */
    NONE,     "",       "",       "",       "",     /* 123 */
    NONE,     "",       "",       "",       "",     /* 124 */
    NONE,     "",       "",       "",       "",     /* 125 */
    NONE,     "",       "",       "",       "",     /* 126 */
    NONE,     "",       "",       "",       "",     /* 127 */
};


/*
 * Get characters from the keyboard.  If none are present, return NULL.
 */

Scan_def *scan_codes = sw_scan_codes;

char *
sget()
{
	u_char dt;
	static u_char extended = 0, shift_state = 0;
	static u_char capchar[2];

top:
	KBD_DELAY;
	dt = inb(KBDATAP);

	switch (dt) {
	case KBR_ACK: case KBR_ECHO:
		kb_oq_get = (kb_oq_get + 1) & 7;
		if(kb_oq_get != kb_oq_put) {
			outb(KBOUTP, kb_oq[kb_oq_get]);
		}
		goto loop;
	case KBR_RESEND:
		outb(KBOUTP, kb_oq[kb_oq_get]);
		goto loop;
	}

	if (pc_xmode > 0) {
#if defined(DDB) && defined(XSERVER_DDB)
		/* F12 enters the debugger while in X mode */
		if (dt == 88)
			Debugger();
#endif
		capchar[0] = dt;
		capchar[1] = 0;
		/*
		 * Check for locking keys.
		 *
		 * XXX Setting the LEDs this way is a bit bogus.  What if the
		 * keyboard has been remapped in X?
		 */
		switch ((scan_codes+(dt & 0x7f))->type) {
		case NUM:
			if (dt & 0x80) {
				shift_state &= ~NUM;
				break;
			}
			if (shift_state & NUM)
				break;
			shift_state |= NUM;
			lock_state ^= NUM;
			async_update();
			break;
		case CAPS:
			if (dt & 0x80) {
				shift_state &= ~CAPS;
				break;
			}
			if (shift_state & CAPS)
				break;
			shift_state |= CAPS;
			lock_state ^= CAPS;
			async_update();
			break;
		case SCROLL:
			if (dt & 0x80) {
				shift_state &= ~SCROLL;
				break;
			}
			if (shift_state & SCROLL)
				break;
			shift_state |= SCROLL;
			lock_state ^= SCROLL;
			if ((lock_state & SCROLL) == 0)
				wakeup((caddr_t)&lock_state);
			async_update();
			break;
		}
		return capchar;
	}

	switch (dt) {
	case KBR_EXTENDED:
		extended = 1;
		goto loop;
	}

#ifdef DEBUG
	/*
	 * Check for cntl-alt-esc.
	 */
	if ((dt == 1) && (shift_state & (CTL | ALT)) == (CTL | ALT)) {
		mdbpanic();
		dt |= 0x80;	/* discard esc (ddb discarded ctl-alt) */
	}
#endif

	/*
	 * Check for make/break.
	 */
	if (dt & 0x80) {
		/*
		 * break
		 */
		dt &= 0x7f;
		switch ((scan_codes+dt)->type) {
		case NUM:
			shift_state &= ~NUM;
			break;
		case CAPS:
			shift_state &= ~CAPS;
			break;
		case SCROLL:
			shift_state &= ~SCROLL;
			break;
		case SHIFT:
			shift_state &= ~SHIFT;
			break;
		case ALT:
			if (extended)
				shift_state &= ~ALTGR;
			else
				shift_state &= ~ALT;
			break;
		case CTL:
			shift_state &= ~CTL;
			break;
		}
	} else {
		/*
		 * make
		 */
		switch ((scan_codes+dt)->type) {
		/*
		 * locking keys
		 */
		case NUM:
			if (shift_state & NUM)
				break;
			shift_state |= NUM;
			lock_state ^= NUM;
			async_update();
			break;
		case CAPS:
			if (shift_state & CAPS)
				break;
			shift_state |= CAPS;
			lock_state ^= CAPS;
			async_update();
			break;
		case SCROLL:
			if (shift_state & SCROLL)
				break;
			shift_state |= SCROLL;
			lock_state ^= SCROLL;
			if ((lock_state & SCROLL) == 0)
				wakeup((caddr_t)&lock_state);
			async_update();
			break;
		/*
		 * non-locking keys
		 */
		case SHIFT:
			shift_state |= SHIFT;
			break;
		case ALT:
			if (extended)
				shift_state |= ALTGR;
			else
				shift_state |= ALT;
			break;
		case CTL:
			shift_state |= CTL;
			break;
		case ASCII:
			if (shift_state & ALTGR) {
				capchar[0] = (scan_codes+dt)->altgr[0];
				if (shift_state & CTL)
					capchar[0] &= 0x1f;
			}
			else if (shift_state & CTL)
				capchar[0] = (scan_codes+dt)->ctl[0];
			else if (shift_state & SHIFT)
				capchar[0] = (scan_codes+dt)->shift[0];

			else
				capchar[0] = (scan_codes+dt)->unshift[0];
			if ((lock_state & CAPS) && capchar[0] >= 'a' &&
			    capchar[0] <= 'z') {
				capchar[0] -= ('a' - 'A');
			}
			capchar[0] |= (shift_state & ALT);
			extended = 0;
			return capchar;
		case NONE:
printf("keycode %d\n",dt);
			break;
		case FUNC: {
			char *more_chars;
			if (shift_state & SHIFT)
				more_chars = (scan_codes+dt)->shift;
			else if (shift_state & CTL)
				more_chars = (scan_codes+dt)->ctl;
			else
				more_chars = (scan_codes+dt)->unshift;
			extended = 0;
			return more_chars;
		}
		case KP: {
			char *more_chars;
			if (shift_state & (SHIFT | CTL) ||
			    (lock_state & NUM) == 0 || extended)
				more_chars = (scan_codes+dt)->shift;
			else
				more_chars = (scan_codes+dt)->unshift;
			extended = 0;
			return more_chars;
		}
		}
	}

	extended = 0;
loop:
	if ((inb(KBSTATP) & KBS_DIB) == 0)
		return 0;
	goto top;
}

int
pcmmap(dev, offset, nprot)
	dev_t dev;
	int offset;
	int nprot;
{

	if (offset >= 0xa0000 && offset < 0xc0000)
		return pica_btop(PICA_P_LOCAL_VIDEO + offset);
	if (offset >= 0x0000 && offset < 0x10000)
		return pica_btop(PICA_P_LOCAL_VIDEO_CTRL + offset);
	if (offset >= 0x40000000 && offset < 0x40800000)
		return pica_btop(PICA_P_LOCAL_VIDEO + offset - 0x40000000);
	return -1;
}

pc_xmode_on()
{
	if (pc_xmode)
		return;
	pc_xmode = 1;

#ifdef XFREE86_BUG_COMPAT
	/* If still unchanged, get current shape. */
	if (cursor_shape == 0xffff)
		get_cursor_shape();
#endif
}

pc_xmode_off()
{
	if (pc_xmode == 0)
		return;
	pc_xmode = 0;

#ifdef XFREE86_BUG_COMPAT
	/* XXX It would be hard to justify why the X server doesn't do this. */
	set_cursor_shape();
#endif
	async_update();
}
/*	$NetBSD: pccons.c,v 1.6 1996/10/13 03:31:27 christos Exp $	*/

#include <machine/mouse.h>

/* status bits */
#define	PMS_OBUF_FULL	0x01
#define	PMS_IBUF_FULL	0x02

/* controller commands */
#define	PMS_INT_ENABLE	0x47	/* enable controller interrupts */
#define	PMS_INT_DISABLE	0x65	/* disable controller interrupts */
#define	PMS_AUX_ENABLE	0xa7	/* enable auxiliary port */
#define	PMS_AUX_DISABLE	0xa8	/* disable auxiliary port */
#define	PMS_MAGIC_1	0xa9	/* XXX */

#define	PMS_8042_CMD	0x65

/* mouse commands */
#define	PMS_SET_SCALE11	0xe6	/* set scaling 1:1 */
#define	PMS_SET_SCALE21 0xe7	/* set scaling 2:1 */
#define	PMS_SET_RES	0xe8	/* set resolution */
#define	PMS_GET_SCALE	0xe9	/* get scaling factor */
#define	PMS_SET_STREAM	0xea	/* set streaming mode */
#define	PMS_SET_SAMPLE	0xf3	/* set sampling rate */
#define	PMS_DEV_ENABLE	0xf4	/* mouse on */
#define	PMS_DEV_DISABLE	0xf5	/* mouse off */
#define	PMS_RESET	0xff	/* reset */

#define	PMS_CHUNK	128	/* chunk size for read */
#define	PMS_BSIZE	1020	/* buffer size */


static inline void
pms_dev_cmd(value)
	u_char value;
{
	kbd_flush_input();
	outb(KBCMDP, 0xd4);
	kbd_flush_input();
	outb(KBDATAP, value);
}

static inline void
pms_aux_cmd(value)
	u_char value;
{
	kbd_flush_input();
	outb(KBCMDP, value);
}

static inline void
pms_pit_cmd(value)
	u_char value;
{
	kbd_flush_input();
	outb(KBCMDP, 0x60);
	kbd_flush_input();
	outb(KBDATAP, value);
}

int
pmsprobe(parent, match, aux)
	struct device *parent;
	void *match, *aux;
{
	struct confargs *ca = aux;
	u_char x;

	/* Make shure we're looking for this type of device */
	if(!BUS_MATCHNAME(ca, "pms"))
		return(0);

	pms_dev_cmd(KBC_RESET);
	pms_aux_cmd(PMS_MAGIC_1);
	delay(10000);
	x = inb(KBDATAP);
	pms_pit_cmd(PMS_INT_DISABLE);
	if (x & 0x04)
		return 0;

	return 1;
}

void
pmsattach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct pms_softc *sc = (void *)self;
	struct confargs *ca = aux;

	printf("\n");

	/* Other initialization was done by pmsprobe. */
	sc->sc_state = 0;

	BUS_INTR_ESTABLISH(ca, pmsintr, (void *)(long)sc);
}

int
pmsopen(dev, flag)
	dev_t dev;
	int flag;
{
	int unit = PMSUNIT(dev);
	struct pms_softc *sc;

	if (unit >= pms_cd.cd_ndevs)
		return ENXIO;
	sc = pms_cd.cd_devs[unit];
	if (!sc)
		return ENXIO;

	if (sc->sc_state & PMS_OPEN)
		return EBUSY;

	if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1)
		return ENOMEM;

	sc->sc_state |= PMS_OPEN;
	sc->sc_status = 0;
	sc->sc_x = sc->sc_y = 0;

	/* Enable interrupts. */
	pms_dev_cmd(PMS_DEV_ENABLE);
	pms_aux_cmd(PMS_AUX_ENABLE);
	pms_dev_cmd(PMS_SET_RES);
	pms_dev_cmd(3);		/* 8 counts/mm */
	pms_dev_cmd(PMS_SET_SCALE21);
#if 0
	pms_dev_cmd(PMS_SET_SAMPLE);
	pms_dev_cmd(100);	/* 100 samples/sec */
	pms_dev_cmd(PMS_SET_STREAM);
#endif
	pms_pit_cmd(PMS_INT_ENABLE);

	return 0;
}

int
pmsclose(dev, flag)
	dev_t dev;
	int flag;
{
	struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)];

	/* Disable interrupts. */
	pms_dev_cmd(PMS_DEV_DISABLE);
	pms_pit_cmd(PMS_INT_DISABLE);
	pms_aux_cmd(PMS_AUX_DISABLE);

	sc->sc_state &= ~PMS_OPEN;

	clfree(&sc->sc_q);

	return 0;
}

int
pmsread(dev, uio, flag)
	dev_t dev;
	struct uio *uio;
	int flag;
{
	struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)];
	int s;
	int error;
	size_t length;
	u_char buffer[PMS_CHUNK];

	/* Block until mouse activity occured. */

	s = spltty();
	while (sc->sc_q.c_cc == 0) {
		if (flag & IO_NDELAY) {
			splx(s);
			return EWOULDBLOCK;
		}
		sc->sc_state |= PMS_ASLP;
		if (error = tsleep((caddr_t)sc, PZERO | PCATCH, "pmsrea", 0)) {
			sc->sc_state &= ~PMS_ASLP;
			splx(s);
			return error;
		}
	}
	splx(s);

	/* Transfer as many chunks as possible. */

	while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) {
		length = min(sc->sc_q.c_cc, uio->uio_resid);
		if (length > sizeof(buffer))
			length = sizeof(buffer);

		/* Remove a small chunk from the input queue. */
		(void) q_to_b(&sc->sc_q, buffer, length);

		/* Copy the data to the user process. */
		if (error = uiomove(buffer, length, uio))
			break;
	}

	return error;
}

int
pmsioctl(dev, cmd, addr, flag)
	dev_t dev;
	u_long cmd;
	caddr_t addr;
	int flag;
{
	struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)];
	struct mouseinfo info;
	int s;
	int error;

	switch (cmd) {
	case MOUSEIOCREAD:
		s = spltty();

		info.status = sc->sc_status;
		if (sc->sc_x || sc->sc_y)
			info.status |= MOVEMENT;

		if (sc->sc_x > 127)
			info.xmotion = 127;
		else if (sc->sc_x < -127)
			/* Bounding at -127 avoids a bug in XFree86. */
			info.xmotion = -127;
		else
			info.xmotion = sc->sc_x;

		if (sc->sc_y > 127)
			info.ymotion = 127;
		else if (sc->sc_y < -127)
			info.ymotion = -127;
		else
			info.ymotion = sc->sc_y;

		/* Reset historical information. */
		sc->sc_x = sc->sc_y = 0;
		sc->sc_status &= ~BUTCHNGMASK;
		ndflush(&sc->sc_q, sc->sc_q.c_cc);

		splx(s);
		error = copyout(&info, addr, sizeof(struct mouseinfo));
		break;

	default:
		error = EINVAL;
		break;
	}

	return error;
}

/* Masks for the first byte of a packet */
#define PS2LBUTMASK 0x01
#define PS2RBUTMASK 0x02
#define PS2MBUTMASK 0x04

int
pmsintr(arg)
	void *arg;
{
	struct pms_softc *sc = arg;
	static int state = 0;
	static u_char buttons;
	u_char changed;
	u_char mbutt;
	static char dx, dy;
	u_char buffer[5];

	if ((sc->sc_state & PMS_OPEN) == 0) {
		/* Interrupts are not expected.  Discard the byte. */
		kbd_flush_input();
		return 0;
	}

	switch (state) {

	case 0:
		buttons = inb(KBDATAP);
		if ((buttons & 0xc0) == 0)
			++state;
		break;

	case 1:
		dx = inb(KBDATAP);
		/* Bounding at -127 avoids a bug in XFree86. */
		dx = (dx == -128) ? -127 : dx;
		++state;
		break;

	case 2:
		dy = inb(KBDATAP);
		dy = (dy == -128) ? -127 : dy;
		state = 0;

		mbutt = buttons;
		buttons = ((buttons & PS2LBUTMASK) << 2) |
			  ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1);
		changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3;
		sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | changed;

		if (dx || dy || changed) {
			/* Update accumulated movements. */
			sc->sc_x += dx;
			sc->sc_y += dy;

			/* Add this event to the queue. */
			buffer[0] = 0x80 | (mbutt & BUTSTATMASK);
			if(dx < 0)
				buffer[0] |= 0x10;
			buffer[1] = dx & 0x7f;
			if(dy < 0)
				buffer[0] |= 0x20;
			buffer[2] = dy & 0x7f;
			buffer[3] = buffer[4] = 0;
			(void) b_to_q(buffer, sizeof buffer, &sc->sc_q);

			if (sc->sc_state & PMS_ASLP) {
				sc->sc_state &= ~PMS_ASLP;
				wakeup((caddr_t)sc);
			}
			selwakeup(&sc->sc_rsel);
		}

		break;
	}

	return -1;
}

int
pmsselect(dev, rw, p)
	dev_t dev;
	int rw;
	struct proc *p;
{
	struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)];
	int s;
	int ret;

	if (rw == FWRITE)
		return 0;

	s = spltty();
	if (!sc->sc_q.c_cc) {
		selrecord(p, &sc->sc_rsel);
		ret = 0;
	} else
		ret = 1;
	splx(s);

	return ret;
}