[apple/xnu.git] / bsd / kern / tty_tb.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1997 Apple Computer, Inc. All Rights Reserved */
/*-
 * Copyright (c) 1982, 1986, 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 *	@(#)tty_tb.c	8.1 (Berkeley) 6/10/93
 */

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

/*
 * Line discipline for RS232 tablets;
 * supplies binary coordinate data.
 */
#include <sys/param.h>
#include <sys/tablet.h>
#include <sys/tty.h>
#if NeXT
#include <sys/proc.h>
#endif

/*
 * 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 |= LITOUT;
	return (0);
}

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

#ifndef NeXT
	tbioctl(tp, BIOSMODE, &modebits, 0);
#else
	tbioctl(tp, BIOSMODE, &modebits, 0, current_proc());
#endif
	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*/
#ifndef NeXT
tbioctl(tp, cmd, data, flag)
	struct tty *tp;
	caddr_t data;
#else
tbtioctl(tp, cmd, data, flag, p)
	struct tty *tp;
	u_long cmd;
	caddr_t data;
	int flag;
	struct proc *p;
#endif /* !NeXT */
{
	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 /* NTB > 0 */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/* Copyright (c) 1997 Apple Computer, Inc. All Rights Reserved */
	23	/*-
	24	* Copyright (c) 1982, 1986, 1991, 1993
	25	* The Regents of the University of California. All rights reserved.
	26	*
	27	* @(#)tty_tb.c 8.1 (Berkeley) 6/10/93
	28	*/
	29
	30	#include "tb.h"
	31	#if NTB > 0
	32
	33	/*
	34	* Line discipline for RS232 tablets;
	35	* supplies binary coordinate data.
	36	*/
	37	#include <sys/param.h>
	38	#include <sys/tablet.h>
	39	#include <sys/tty.h>
	40	#if NeXT
	41	#include <sys/proc.h>
	42	#endif
	43
	44	/*
	45	* Tablet configuration table.
	46	*/
	47	struct tbconf {
	48	short tbc_recsize; /* input record size in bytes */
	49	short tbc_uiosize; /* size of data record returned user */
	50	int tbc_sync; /* mask for finding sync byte/bit */
	51	int (tbc_decode)();/ decoding routine */
	52	char tbc_run; / enter run mode sequence */
	53	char tbc_point; / enter point mode sequence */
	54	char tbc_stop; / stop sequence */
	55	char tbc_start; / start/restart sequence */
	56	int tbc_flags;
	57	#define TBF_POL 0x1 /* polhemus hack */
	58	#define TBF_INPROX 0x2 /* tablet has proximity info */
	59	};
	60
	61	static int tbdecode(), gtcodecode(), poldecode();
	62	static int tblresdecode(), tbhresdecode();
	63
	64	struct tbconf tbconf[TBTYPE] = {
65	{ 0 },
66	{ 5, sizeof (struct tbpos), 0200, tbdecode, "6", "4" },
67	{ 5, sizeof (struct tbpos), 0200, tbdecode, "\1CN", "\1RT", "\2", "\4" },
68	{ 8, sizeof (struct gtcopos), 0200, gtcodecode },
69	{17, sizeof (struct polpos), 0200, poldecode, 0, 0, "\21", "\5\22\2\23",
70	TBF_POL },
71	{ 5, sizeof (struct tbpos), 0100, tblresdecode, "\1CN", "\1PT", "\2", "\4",
72	TBF_INPROX },
73	{ 6, sizeof (struct tbpos), 0200, tbhresdecode, "\1CN", "\1PT", "\2", "\4",
74	TBF_INPROX },
75	{ 5, sizeof (struct tbpos), 0100, tblresdecode, "\1CL\33", "\1PT\33", 0, 0},
76	{ 6, sizeof (struct tbpos), 0200, tbhresdecode, "\1CL\33", "\1PT\33", 0, 0},
77	};
78
79	/*
80	* Tablet state
81	*/
82	struct tb {
83	int tbflags; /* mode & type bits */
84	#define TBMAXREC 17 /* max input record size */
85	char cbuf[TBMAXREC]; /* input buffer */
86	union {
87	struct tbpos tbpos;
88	struct gtcopos gtcopos;
89	struct polpos polpos;
90	} rets; /* processed state */
91	#define NTBS 16
92	} tb[NTBS];
93
94	/*
95	* Open as tablet discipline; called on discipline change.
96	*/
97	/ARGSUSED/
98	tbopen(dev, tp)
99	dev_t dev;
100	register struct tty *tp;
101	{
102	register struct tb *tbp;
103
104	if (tp->t_line == TABLDISC)
105	return (ENODEV);
106	ttywflush(tp);
107	for (tbp = tb; tbp < &tb[NTBS]; tbp++)
108	if (tbp->tbflags == 0)
109	break;
110	if (tbp >= &tb[NTBS])
111	return (EBUSY);
112	tbp->tbflags = TBTIGER\|TBPOINT; /* default */
113	tp->t_cp = tbp->cbuf;
114	tp->t_inbuf = 0;
115	bzero((caddr_t)&tbp->rets, sizeof (tbp->rets));
116	tp->T_LINEP = (caddr_t)tbp;
117	tp->t_flags \|= LITOUT;
118	return (0);
119	}
120
121	/*
122	* Line discipline change or last device close.
123	*/
124	tbclose(tp)
125	register struct tty *tp;
126	{
127	register int s;
128	int modebits = TBPOINT\|TBSTOP;
129
130	#ifndef NeXT
131	tbioctl(tp, BIOSMODE, &modebits, 0);
132	#else
133	tbioctl(tp, BIOSMODE, &modebits, 0, current_proc());
134	#endif
135	s = spltty();
136	((struct tb *)tp->T_LINEP)->tbflags = 0;
137	tp->t_cp = 0;
138	tp->t_inbuf = 0;
139	tp->t_rawq.c_cc = 0; /* clear queues -- paranoid */
140	tp->t_canq.c_cc = 0;
141	tp->t_line = 0; /* paranoid: avoid races */
142	splx(s);
143	}
144
145	/*
146	* Read from a tablet line.
147	* Characters have been buffered in a buffer and decoded.
148	*/
149	tbread(tp, uio)
150	register struct tty *tp;
151	struct uio *uio;
152	{
153	register struct tb tbp = (struct tb )tp->T_LINEP;
154	register struct tbconf *tc = &tbconf[tbp->tbflags & TBTYPE];
155	int ret;
156
157	if ((tp->t_state&TS_CARR_ON) == 0)
158	return (EIO);
159	ret = uiomove(&tbp->rets, tc->tbc_uiosize, uio);
160	if (tc->tbc_flags&TBF_POL)
161	tbp->rets.polpos.p_key = ' ';
162	return (ret);
163	}
164
165	/*
166	* Low level character input routine.
167	* Stuff the character in the buffer, and decode
168	* if all the chars are there.
169	*
170	* This routine could be expanded in-line in the receiver
171	* interrupt routine to make it run as fast as possible.
172	*/
173	tbinput(c, tp)
174	register int c;
175	register struct tty *tp;
176	{
177	register struct tb tbp = (struct tb )tp->T_LINEP;
178	register struct tbconf *tc = &tbconf[tbp->tbflags & TBTYPE];
179
180	if (tc->tbc_recsize == 0 \|\| tc->tbc_decode == 0) /* paranoid? */
181	return;
182	/*
183	* Locate sync bit/byte or reset input buffer.
184	*/
185	if (c&tc->tbc_sync \|\| tp->t_inbuf == tc->tbc_recsize) {
186	tp->t_cp = tbp->cbuf;
187	tp->t_inbuf = 0;
188	}
189	*tp->t_cp++ = c&0177;
190	/*
191	* Call decode routine only if a full record has been collected.
192	*/
193	if (++tp->t_inbuf == tc->tbc_recsize)
194	(*tc->tbc_decode)(tc, tbp->cbuf, &tbp->rets);
195	}
196
197	/*
198	* Decode GTCO 8 byte format (high res, tilt, and pressure).
199	*/
200	static
201	gtcodecode(tc, cp, tbpos)
202	struct tbconf *tc;
203	register char *cp;
204	register struct gtcopos *tbpos;
205	{
206
207	tbpos->pressure = *cp >> 2;
208	tbpos->status = (tbpos->pressure > 16) \| TBINPROX; /* half way down */
209	tbpos->xpos = (*cp++ & 03) << 14;
210	tbpos->xpos \|= *cp++ << 7;
211	tbpos->xpos \|= *cp++;
212	tbpos->ypos = (*cp++ & 03) << 14;
213	tbpos->ypos \|= *cp++ << 7;
214	tbpos->ypos \|= *cp++;
215	tbpos->xtilt = *cp++;
216	tbpos->ytilt = *cp++;
217	tbpos->scount++;
218	}
219
220	/*
221	* Decode old Hitachi 5 byte format (low res).
222	*/
223	static
224	tbdecode(tc, cp, tbpos)
225	struct tbconf *tc;
226	register char *cp;
227	register struct tbpos *tbpos;
228	{
229	register char byte;
230
231	byte = *cp++;
232	tbpos->status = (byte&0100) ? TBINPROX : 0;
233	byte &= ~0100;
234	if (byte > 036)
235	tbpos->status \|= 1 << ((byte-040)/2);
236	tbpos->xpos = *cp++ << 7;
237	tbpos->xpos \|= *cp++;
238	if (tbpos->xpos < 256) /* tablet wraps around at 256 */
239	tbpos->status &= ~TBINPROX; /* make it out of proximity */
240	tbpos->ypos = *cp++ << 7;
241	tbpos->ypos \|= *cp++;
242	tbpos->scount++;
243	}
244
245	/*
246	* Decode new Hitach 5-byte format (low res).
247	*/
248	static
249	tblresdecode(tc, cp, tbpos)
250	struct tbconf *tc;
251	register char *cp;
252	register struct tbpos *tbpos;
253	{
254
255	cp &= ~0100; / mask sync bit */
256	tbpos->status = (*cp++ >> 2) \| TBINPROX;
257	if (tc->tbc_flags&TBF_INPROX && tbpos->status&020)
258	tbpos->status &= ~(020\|TBINPROX);
259	tbpos->xpos = *cp++;
260	tbpos->xpos \|= *cp++ << 6;
261	tbpos->ypos = *cp++;
262	tbpos->ypos \|= *cp++ << 6;
263	tbpos->scount++;
264	}
265
266	/*
267	* Decode new Hitach 6-byte format (high res).
268	*/
269	static
270	tbhresdecode(tc, cp, tbpos)
271	struct tbconf *tc;
272	register char *cp;
273	register struct tbpos *tbpos;
274	{
275	char byte;
276
277	byte = *cp++;
278	tbpos->xpos = (byte & 03) << 14;
279	tbpos->xpos \|= *cp++ << 7;
280	tbpos->xpos \|= *cp++;
281	tbpos->ypos = *cp++ << 14;
282	tbpos->ypos \|= *cp++ << 7;
283	tbpos->ypos \|= *cp++;
284	tbpos->status = (byte >> 2) \| TBINPROX;
285	if (tc->tbc_flags&TBF_INPROX && tbpos->status&020)
286	tbpos->status &= ~(020\|TBINPROX);
287	tbpos->scount++;
288	}
289
290	/*
291	* Polhemus decode.
292	*/
293	static
294	poldecode(tc, cp, polpos)
295	struct tbconf *tc;
296	register char *cp;
297	register struct polpos *polpos;
298	{
299
300	polpos->p_x = cp[4] \| cp[3]<<7 \| (cp[9] & 0x03) << 14;
301	polpos->p_y = cp[6] \| cp[5]<<7 \| (cp[9] & 0x0c) << 12;
302	polpos->p_z = cp[8] \| cp[7]<<7 \| (cp[9] & 0x30) << 10;
303	polpos->p_azi = cp[11] \| cp[10]<<7 \| (cp[16] & 0x03) << 14;
304	polpos->p_pit = cp[13] \| cp[12]<<7 \| (cp[16] & 0x0c) << 12;
305	polpos->p_rol = cp[15] \| cp[14]<<7 \| (cp[16] & 0x30) << 10;
306	polpos->p_stat = cp[1] \| cp[0]<<7;
307	if (cp[2] != ' ')
308	polpos->p_key = cp[2];
309	}
310
311	/ARGSUSED/
312	#ifndef NeXT
313	tbioctl(tp, cmd, data, flag)
314	struct tty *tp;
315	caddr_t data;
316	#else
317	tbtioctl(tp, cmd, data, flag, p)
318	struct tty *tp;
319	u_long cmd;
320	caddr_t data;
321	int flag;
322	struct proc *p;
323	#endif /* !NeXT */
324	{
325	register struct tb tbp = (struct tb )tp->T_LINEP;
326
327	switch (cmd) {
328
329	case BIOGMODE:
330	(int )data = tbp->tbflags & TBMODE;
331	break;
332
333	case BIOSTYPE:
334	if (tbconf[(int )data & TBTYPE].tbc_recsize == 0 \|\|
335	tbconf[(int )data & TBTYPE].tbc_decode == 0)
336	return (EINVAL);
337	tbp->tbflags &= ~TBTYPE;
338	tbp->tbflags \|= (int )data & TBTYPE;
339	/* fall thru... to set mode bits */
340
341	case BIOSMODE: {
342	register struct tbconf *tc;
343
344	tbp->tbflags &= ~TBMODE;
345	tbp->tbflags \|= (int )data & TBMODE;
346	tc = &tbconf[tbp->tbflags & TBTYPE];
347	if (tbp->tbflags&TBSTOP) {
348	if (tc->tbc_stop)
349	ttyout(tc->tbc_stop, tp);
350	} else if (tc->tbc_start)
351	ttyout(tc->tbc_start, tp);
352	if (tbp->tbflags&TBPOINT) {
353	if (tc->tbc_point)
354	ttyout(tc->tbc_point, tp);
355	} else if (tc->tbc_run)
356	ttyout(tc->tbc_run, tp);
357	ttstart(tp);
358	break;
359	}
360
361	case BIOGTYPE:
362	(int )data = tbp->tbflags & TBTYPE;
363	break;
364
365	case TIOCSETD:
366	case TIOCGETD:
367	case TIOCGETP:
368	case TIOCGETC:
369	return (-1); /* pass thru... */
370
371	default:
372	return (ENOTTY);
373	}
374	return (0);
375	}
376	#endif /* NTB > 0 */