[unix-history] / sys / kern / tty_tb.c

/*-
 * Copyright (c) 1982, 1986, 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * 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.
 *
 *	from: @(#)tty_tb.c	7.7 (Berkeley) 5/9/91
 *	$Id$
 */

#include "tb.h"
#if NTB > 0

/*
 * Line discipline for RS232 tablets;
 * supplies binary coordinate data.
 */
#include "param.h"
#include "tablet.h"
#include "tty.h"

/*
 * Tablet configuration table.
 */
struct	tbconf {
	short	tbc_recsize;	/* input record size in bytes */
	short	tbc_uiosize;	/* size of data record returned user */
	int	tbc_sync;	/* mask for finding sync byte/bit */
	int	(*tbc_decode)();/* decoding routine */
	char	*tbc_run;	/* enter run mode sequence */
	char	*tbc_point;	/* enter point mode sequence */
	char	*tbc_stop;	/* stop sequence */
	char	*tbc_start;	/* start/restart sequence */
	int	tbc_flags;
#define	TBF_POL		0x1	/* polhemus hack */
#define	TBF_INPROX	0x2	/* tablet has proximity info */
};

static	int tbdecode(), gtcodecode(), poldecode();
static	int tblresdecode(), tbhresdecode();

struct	tbconf tbconf[TBTYPE] = {
{ 0 },
{ 5, sizeof (struct tbpos), 0200, tbdecode, "6", "4" },
{ 5, sizeof (struct tbpos), 0200, tbdecode, "\1CN", "\1RT", "\2", "\4" },
{ 8, sizeof (struct gtcopos), 0200, gtcodecode },
{17, sizeof (struct polpos), 0200, poldecode, 0, 0, "\21", "\5\22\2\23",
  TBF_POL },
{ 5, sizeof (struct tbpos), 0100, tblresdecode, "\1CN", "\1PT", "\2", "\4",
  TBF_INPROX },
{ 6, sizeof (struct tbpos), 0200, tbhresdecode, "\1CN", "\1PT", "\2", "\4",
  TBF_INPROX },
{ 5, sizeof (struct tbpos), 0100, tblresdecode, "\1CL\33", "\1PT\33", 0, 0},
{ 6, sizeof (struct tbpos), 0200, tbhresdecode, "\1CL\33", "\1PT\33", 0, 0},
};

/*
 * Tablet state
 */
struct tb {
	int	tbflags;		/* mode & type bits */
#define	TBMAXREC	17	/* max input record size */
	char	cbuf[TBMAXREC];		/* input buffer */
	union {
		struct	tbpos tbpos;
		struct	gtcopos gtcopos;
		struct	polpos polpos;
	} rets;				/* processed state */
#define NTBS	16
} tb[NTBS];

/*
 * Open as tablet discipline; called on discipline change.
 */
/*ARGSUSED*/
tbopen(dev, tp)
	dev_t dev;
	register struct tty *tp;
{
	register struct tb *tbp;

	if (tp->t_line == TABLDISC)
		return (ENODEV);
	ttywflush(tp);
	for (tbp = tb; tbp < &tb[NTBS]; tbp++)
		if (tbp->tbflags == 0)
			break;
	if (tbp >= &tb[NTBS])
		return (EBUSY);
	tbp->tbflags = TBTIGER|TBPOINT;		/* default */
	tp->t_cp = tbp->cbuf;
	tp->t_inbuf = 0;
	bzero((caddr_t)&tbp->rets, sizeof (tbp->rets));
	tp->T_LINEP = (caddr_t)tbp;
	tp->t_flags = ttcompatgetflags(tp);
	tp->t_flags |= LITOUT;
	ttcompatsetlflags(tp, &tp->t_termios);
	return (0);
}

/*
 * Line discipline change or last device close.
 */
tbclose(tp)
	register struct tty *tp;
{
	register int s;
	int modebits = TBPOINT|TBSTOP;

	tbioctl(tp, BIOSMODE, &modebits, 0);
	s = spltty();
	((struct tb *)tp->T_LINEP)->tbflags = 0;
	tp->t_cp = 0;
	tp->t_inbuf = 0;
	tp->t_rawq.c_cc = 0;		/* clear queues -- paranoid */
	tp->t_canq.c_cc = 0;
	tp->t_line = 0;			/* paranoid: avoid races */
	splx(s);
}

/*
 * Read from a tablet line.
 * Characters have been buffered in a buffer and decoded.
 */
tbread(tp, uio)
	register struct tty *tp;
	struct uio *uio;
{
	register struct tb *tbp = (struct tb *)tp->T_LINEP;
	register struct tbconf *tc = &tbconf[tbp->tbflags & TBTYPE];
	int ret;

	if ((tp->t_state&TS_CARR_ON) == 0)
		return (EIO);
	ret = uiomove(&tbp->rets, tc->tbc_uiosize, uio);
	if (tc->tbc_flags&TBF_POL)
		tbp->rets.polpos.p_key = ' ';
	return (ret);
}

/*
 * Low level character input routine.
 * Stuff the character in the buffer, and decode
 * if all the chars are there.
 *
 * This routine could be expanded in-line in the receiver
 * interrupt routine to make it run as fast as possible.
 */
tbinput(c, tp)
	register int c;
	register struct tty *tp;
{
	register struct tb *tbp = (struct tb *)tp->T_LINEP;
	register struct tbconf *tc = &tbconf[tbp->tbflags & TBTYPE];

	if (tc->tbc_recsize == 0 || tc->tbc_decode == 0)	/* paranoid? */
		return;
	/*
	 * Locate sync bit/byte or reset input buffer.
	 */
	if (c&tc->tbc_sync || tp->t_inbuf == tc->tbc_recsize) {
		tp->t_cp = tbp->cbuf;
		tp->t_inbuf = 0;
	}
	*tp->t_cp++ = c&0177;
	/*
	 * Call decode routine only if a full record has been collected.
	 */
	if (++tp->t_inbuf == tc->tbc_recsize)
		(*tc->tbc_decode)(tc, tbp->cbuf, &tbp->rets);
}

/*
 * Decode GTCO 8 byte format (high res, tilt, and pressure).
 */
static
gtcodecode(tc, cp, tbpos)
	struct tbconf *tc;
	register char *cp;
	register struct gtcopos *tbpos;
{

	tbpos->pressure = *cp >> 2;
	tbpos->status = (tbpos->pressure > 16) | TBINPROX; /* half way down */
	tbpos->xpos = (*cp++ & 03) << 14;
	tbpos->xpos |= *cp++ << 7;
	tbpos->xpos |= *cp++;
	tbpos->ypos = (*cp++ & 03) << 14;
	tbpos->ypos |= *cp++ << 7;
	tbpos->ypos |= *cp++;
	tbpos->xtilt = *cp++;
	tbpos->ytilt = *cp++;
	tbpos->scount++;
}

/*
 * Decode old Hitachi 5 byte format (low res).
 */
static
tbdecode(tc, cp, tbpos)
	struct tbconf *tc;
	register char *cp;
	register struct tbpos *tbpos;
{
	register char byte;

	byte = *cp++;
	tbpos->status = (byte&0100) ? TBINPROX : 0;
	byte &= ~0100;
	if (byte > 036)
		tbpos->status |= 1 << ((byte-040)/2);
	tbpos->xpos = *cp++ << 7;
	tbpos->xpos |= *cp++;
	if (tbpos->xpos < 256)			/* tablet wraps around at 256 */
		tbpos->status &= ~TBINPROX;	/* make it out of proximity */
	tbpos->ypos = *cp++ << 7;
	tbpos->ypos |= *cp++;
	tbpos->scount++;
}

/*
 * Decode new Hitach 5-byte format (low res).
 */
static
tblresdecode(tc, cp, tbpos)
	struct tbconf *tc;
	register char *cp;
	register struct tbpos *tbpos;
{

	*cp &= ~0100;		/* mask sync bit */
	tbpos->status = (*cp++ >> 2) | TBINPROX;
	if (tc->tbc_flags&TBF_INPROX && tbpos->status&020)
		tbpos->status &= ~(020|TBINPROX);
	tbpos->xpos = *cp++;
	tbpos->xpos |= *cp++ << 6;
	tbpos->ypos = *cp++;
	tbpos->ypos |= *cp++ << 6;
	tbpos->scount++;
}

/*
 * Decode new Hitach 6-byte format (high res).
 */
static
tbhresdecode(tc, cp, tbpos)
	struct tbconf *tc;
	register char *cp;
	register struct tbpos *tbpos;
{
	char byte;

	byte = *cp++;
	tbpos->xpos = (byte & 03) << 14;
	tbpos->xpos |= *cp++ << 7;
	tbpos->xpos |= *cp++;
	tbpos->ypos = *cp++ << 14;
	tbpos->ypos |= *cp++ << 7;
	tbpos->ypos |= *cp++;
	tbpos->status = (byte >> 2) | TBINPROX;
	if (tc->tbc_flags&TBF_INPROX && tbpos->status&020)
		tbpos->status &= ~(020|TBINPROX);
	tbpos->scount++;
}

/*
 * Polhemus decode.
 */
static
poldecode(tc, cp, polpos)
	struct tbconf *tc;
	register char *cp;
	register struct polpos *polpos;
{

	polpos->p_x = cp[4] | cp[3]<<7 | (cp[9] & 0x03) << 14;
	polpos->p_y = cp[6] | cp[5]<<7 | (cp[9] & 0x0c) << 12;
	polpos->p_z = cp[8] | cp[7]<<7 | (cp[9] & 0x30) << 10;
	polpos->p_azi = cp[11] | cp[10]<<7 | (cp[16] & 0x03) << 14;
	polpos->p_pit = cp[13] | cp[12]<<7 | (cp[16] & 0x0c) << 12;
	polpos->p_rol = cp[15] | cp[14]<<7 | (cp[16] & 0x30) << 10;
	polpos->p_stat = cp[1] | cp[0]<<7;
	if (cp[2] != ' ')
		polpos->p_key = cp[2];
}

/*ARGSUSED*/
tbioctl(tp, cmd, data, flag)
	struct tty *tp;
	caddr_t data;
{
	register struct tb *tbp = (struct tb *)tp->T_LINEP;

	switch (cmd) {

	case BIOGMODE:
		*(int *)data = tbp->tbflags & TBMODE;
		break;

	case BIOSTYPE:
		if (tbconf[*(int *)data & TBTYPE].tbc_recsize == 0 ||
		    tbconf[*(int *)data & TBTYPE].tbc_decode == 0)
			return (EINVAL);
		tbp->tbflags &= ~TBTYPE;
		tbp->tbflags |= *(int *)data & TBTYPE;
		/* fall thru... to set mode bits */

	case BIOSMODE: {
		register struct tbconf *tc;

		tbp->tbflags &= ~TBMODE;
		tbp->tbflags |= *(int *)data & TBMODE;
		tc = &tbconf[tbp->tbflags & TBTYPE];
		if (tbp->tbflags&TBSTOP) {
			if (tc->tbc_stop)
				ttyout(tc->tbc_stop, tp);
		} else if (tc->tbc_start)
			ttyout(tc->tbc_start, tp);
		if (tbp->tbflags&TBPOINT) {
			if (tc->tbc_point)
				ttyout(tc->tbc_point, tp);
		} else if (tc->tbc_run)
			ttyout(tc->tbc_run, tp);
		ttstart(tp);
		break;
	}

	case BIOGTYPE:
		*(int *)data = tbp->tbflags & TBTYPE;
		break;

	case TIOCSETD:
	case TIOCGETD:
	case TIOCGETP:
	case TIOCGETC:
		return (-1);		/* pass thru... */

	default:
		return (ENOTTY);
	}
	return (0);
}
#endif
Commit	Line	Data
15637ed4 RG	1	/*-
	2	* Copyright (c) 1982, 1986, 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
600f7f07 RG	33	* from: @(#)tty_tb.c 7.7 (Berkeley) 5/9/91
600f7f07 RG	34	* $Id$
15637ed4 RG	35	*/
	36
	37	#include "tb.h"
	38	#if NTB > 0
	39
	40	/*
	41	* Line discipline for RS232 tablets;
	42	* supplies binary coordinate data.
	43	*/
	44	#include "param.h"
	45	#include "tablet.h"
	46	#include "tty.h"
	47
	48	/*
	49	* Tablet configuration table.
	50	*/
	51	struct tbconf {
	52	short tbc_recsize; /* input record size in bytes */
	53	short tbc_uiosize; /* size of data record returned user */
	54	int tbc_sync; /* mask for finding sync byte/bit */
	55	int (tbc_decode)();/ decoding routine */
	56	char tbc_run; / enter run mode sequence */
	57	char tbc_point; / enter point mode sequence */
	58	char tbc_stop; / stop sequence */
	59	char tbc_start; / start/restart sequence */
	60	int tbc_flags;
	61	#define TBF_POL 0x1 /* polhemus hack */
	62	#define TBF_INPROX 0x2 /* tablet has proximity info */
	63	};
	64
	65	static int tbdecode(), gtcodecode(), poldecode();
	66	static int tblresdecode(), tbhresdecode();
	67
	68	struct tbconf tbconf[TBTYPE] = {
	69	{ 0 },
	70	{ 5, sizeof (struct tbpos), 0200, tbdecode, "6", "4" },
	71	{ 5, sizeof (struct tbpos), 0200, tbdecode, "\1CN", "\1RT", "\2", "\4" },
	72	{ 8, sizeof (struct gtcopos), 0200, gtcodecode },
	73	{17, sizeof (struct polpos), 0200, poldecode, 0, 0, "\21", "\5\22\2\23",
	74	TBF_POL },
	75	{ 5, sizeof (struct tbpos), 0100, tblresdecode, "\1CN", "\1PT", "\2", "\4",
	76	TBF_INPROX },
	77	{ 6, sizeof (struct tbpos), 0200, tbhresdecode, "\1CN", "\1PT", "\2", "\4",
	78	TBF_INPROX },
	79	{ 5, sizeof (struct tbpos), 0100, tblresdecode, "\1CL\33", "\1PT\33", 0, 0},
	80	{ 6, sizeof (struct tbpos), 0200, tbhresdecode, "\1CL\33", "\1PT\33", 0, 0},
	81	};
	82
	83	/*
	84	* Tablet state
	85	*/
	86	struct tb {
	87	int tbflags; /* mode & type bits */
	88	#define TBMAXREC 17 /* max input record size */
	89	char cbuf[TBMAXREC]; /* input buffer */
	90	union {
	91	struct tbpos tbpos;
	92	struct gtcopos gtcopos;
	93	struct polpos polpos;
	94	} rets; /* processed state */
	95	#define NTBS 16
	96	} tb[NTBS];
	97
	98	/*
99	* Open as tablet discipline; called on discipline change.
100	*/
101	/ARGSUSED/
102	tbopen(dev, tp)
103	dev_t dev;
104	register struct tty *tp;
105	{
106	register struct tb *tbp;
107
108	if (tp->t_line == TABLDISC)
109	return (ENODEV);
110	ttywflush(tp);
111	for (tbp = tb; tbp < &tb[NTBS]; tbp++)
112	if (tbp->tbflags == 0)
113	break;
114	if (tbp >= &tb[NTBS])
115	return (EBUSY);
116	tbp->tbflags = TBTIGER\|TBPOINT; /* default */
117	tp->t_cp = tbp->cbuf;
118	tp->t_inbuf = 0;
119	bzero((caddr_t)&tbp->rets, sizeof (tbp->rets));
120	tp->T_LINEP = (caddr_t)tbp;
121	tp->t_flags = ttcompatgetflags(tp);
122	tp->t_flags \|= LITOUT;
123	ttcompatsetlflags(tp, &tp->t_termios);
124	return (0);
125	}
126
127	/*
128	* Line discipline change or last device close.
129	*/
130	tbclose(tp)
131	register struct tty *tp;
132	{
133	register int s;
134	int modebits = TBPOINT\|TBSTOP;
135
136	tbioctl(tp, BIOSMODE, &modebits, 0);
137	s = spltty();
138	((struct tb *)tp->T_LINEP)->tbflags = 0;
139	tp->t_cp = 0;
140	tp->t_inbuf = 0;
141	tp->t_rawq.c_cc = 0; /* clear queues -- paranoid */
142	tp->t_canq.c_cc = 0;
143	tp->t_line = 0; /* paranoid: avoid races */
144	splx(s);
145	}
146
147	/*
148	* Read from a tablet line.
149	* Characters have been buffered in a buffer and decoded.
150	*/
151	tbread(tp, uio)
152	register struct tty *tp;
153	struct uio *uio;
154	{
155	register struct tb tbp = (struct tb )tp->T_LINEP;
156	register struct tbconf *tc = &tbconf[tbp->tbflags & TBTYPE];
157	int ret;
158
159	if ((tp->t_state&TS_CARR_ON) == 0)
160	return (EIO);
161	ret = uiomove(&tbp->rets, tc->tbc_uiosize, uio);
162	if (tc->tbc_flags&TBF_POL)
163	tbp->rets.polpos.p_key = ' ';
164	return (ret);
165	}
166
167	/*
168	* Low level character input routine.
169	* Stuff the character in the buffer, and decode
170	* if all the chars are there.
171	*
172	* This routine could be expanded in-line in the receiver
173	* interrupt routine to make it run as fast as possible.
174	*/
175	tbinput(c, tp)
176	register int c;
177	register struct tty *tp;
178	{
179	register struct tb tbp = (struct tb )tp->T_LINEP;
180	register struct tbconf *tc = &tbconf[tbp->tbflags & TBTYPE];
181
182	if (tc->tbc_recsize == 0 \|\| tc->tbc_decode == 0) /* paranoid? */
183	return;
184	/*
185	* Locate sync bit/byte or reset input buffer.
186	*/
187	if (c&tc->tbc_sync \|\| tp->t_inbuf == tc->tbc_recsize) {
188	tp->t_cp = tbp->cbuf;
189	tp->t_inbuf = 0;
190	}
191	*tp->t_cp++ = c&0177;
192	/*
193	* Call decode routine only if a full record has been collected.
194	*/
195	if (++tp->t_inbuf == tc->tbc_recsize)
196	(*tc->tbc_decode)(tc, tbp->cbuf, &tbp->rets);
197	}
198
199	/*
200	* Decode GTCO 8 byte format (high res, tilt, and pressure).
201	*/
202	static
203	gtcodecode(tc, cp, tbpos)
204	struct tbconf *tc;
205	register char *cp;
206	register struct gtcopos *tbpos;
207	{
208
209	tbpos->pressure = *cp >> 2;
210	tbpos->status = (tbpos->pressure > 16) \| TBINPROX; /* half way down */
211	tbpos->xpos = (*cp++ & 03) << 14;
212	tbpos->xpos \|= *cp++ << 7;
213	tbpos->xpos \|= *cp++;
214	tbpos->ypos = (*cp++ & 03) << 14;
215	tbpos->ypos \|= *cp++ << 7;
216	tbpos->ypos \|= *cp++;
217	tbpos->xtilt = *cp++;
218	tbpos->ytilt = *cp++;
219	tbpos->scount++;
220	}
221
222	/*
223	* Decode old Hitachi 5 byte format (low res).
224	*/
225	static
226	tbdecode(tc, cp, tbpos)
227	struct tbconf *tc;
228	register char *cp;
229	register struct tbpos *tbpos;
230	{
231	register char byte;
232
233	byte = *cp++;
234	tbpos->status = (byte&0100) ? TBINPROX : 0;
235	byte &= ~0100;
236	if (byte > 036)
237	tbpos->status \|= 1 << ((byte-040)/2);
238	tbpos->xpos = *cp++ << 7;
239	tbpos->xpos \|= *cp++;
240	if (tbpos->xpos < 256) /* tablet wraps around at 256 */
241	tbpos->status &= ~TBINPROX; /* make it out of proximity */
242	tbpos->ypos = *cp++ << 7;
243	tbpos->ypos \|= *cp++;
244	tbpos->scount++;
245	}
246
247	/*
248	* Decode new Hitach 5-byte format (low res).
249	*/
250	static
251	tblresdecode(tc, cp, tbpos)
252	struct tbconf *tc;
253	register char *cp;
254	register struct tbpos *tbpos;
255	{
256
257	cp &= ~0100; / mask sync bit */
258	tbpos->status = (*cp++ >> 2) \| TBINPROX;
259	if (tc->tbc_flags&TBF_INPROX && tbpos->status&020)
260	tbpos->status &= ~(020\|TBINPROX);
261	tbpos->xpos = *cp++;
262	tbpos->xpos \|= *cp++ << 6;
263	tbpos->ypos = *cp++;
264	tbpos->ypos \|= *cp++ << 6;
265	tbpos->scount++;
266	}
267
268	/*
269	* Decode new Hitach 6-byte format (high res).
270	*/
271	static
272	tbhresdecode(tc, cp, tbpos)
273	struct tbconf *tc;
274	register char *cp;
275	register struct tbpos *tbpos;
276	{
277	char byte;
278
279	byte = *cp++;
280	tbpos->xpos = (byte & 03) << 14;
281	tbpos->xpos \|= *cp++ << 7;
282	tbpos->xpos \|= *cp++;
283	tbpos->ypos = *cp++ << 14;
284	tbpos->ypos \|= *cp++ << 7;
285	tbpos->ypos \|= *cp++;
286	tbpos->status = (byte >> 2) \| TBINPROX;
287	if (tc->tbc_flags&TBF_INPROX && tbpos->status&020)
288	tbpos->status &= ~(020\|TBINPROX);
289	tbpos->scount++;
290	}
291
292	/*
293	* Polhemus decode.
294	*/
295	static
296	poldecode(tc, cp, polpos)
297	struct tbconf *tc;
298	register char *cp;
299	register struct polpos *polpos;
300	{
301
302	polpos->p_x = cp[4] \| cp[3]<<7 \| (cp[9] & 0x03) << 14;
303	polpos->p_y = cp[6] \| cp[5]<<7 \| (cp[9] & 0x0c) << 12;
304	polpos->p_z = cp[8] \| cp[7]<<7 \| (cp[9] & 0x30) << 10;
305	polpos->p_azi = cp[11] \| cp[10]<<7 \| (cp[16] & 0x03) << 14;
306	polpos->p_pit = cp[13] \| cp[12]<<7 \| (cp[16] & 0x0c) << 12;
307	polpos->p_rol = cp[15] \| cp[14]<<7 \| (cp[16] & 0x30) << 10;
308	polpos->p_stat = cp[1] \| cp[0]<<7;
309	if (cp[2] != ' ')
310	polpos->p_key = cp[2];
311	}
312
313	/ARGSUSED/
314	tbioctl(tp, cmd, data, flag)
315	struct tty *tp;
316	caddr_t data;
317	{
318	register struct tb tbp = (struct tb )tp->T_LINEP;
319
320	switch (cmd) {
321
322	case BIOGMODE:
323	(int )data = tbp->tbflags & TBMODE;
324	break;
325
326	case BIOSTYPE:
327	if (tbconf[(int )data & TBTYPE].tbc_recsize == 0 \|\|
328	tbconf[(int )data & TBTYPE].tbc_decode == 0)
329	return (EINVAL);
330	tbp->tbflags &= ~TBTYPE;
331	tbp->tbflags \|= (int )data & TBTYPE;
332	/* fall thru... to set mode bits */
333
334	case BIOSMODE: {
335	register struct tbconf *tc;
336
337	tbp->tbflags &= ~TBMODE;
338	tbp->tbflags \|= (int )data & TBMODE;
339	tc = &tbconf[tbp->tbflags & TBTYPE];
340	if (tbp->tbflags&TBSTOP) {
341	if (tc->tbc_stop)
342	ttyout(tc->tbc_stop, tp);
343	} else if (tc->tbc_start)
344	ttyout(tc->tbc_start, tp);
345	if (tbp->tbflags&TBPOINT) {
346	if (tc->tbc_point)
347	ttyout(tc->tbc_point, tp);
348	} else if (tc->tbc_run)
349	ttyout(tc->tbc_run, tp);
350	ttstart(tp);
351	break;
352	}
353
354	case BIOGTYPE:
355	(int )data = tbp->tbflags & TBTYPE;
356	break;
357
358	case TIOCSETD:
359	case TIOCGETD:
360	case TIOCGETP:
361	case TIOCGETC:
362	return (-1); /* pass thru... */
363
364	default:
365	return (ENOTTY);
366	}
367	return (0);
368	}
369	#endif