xref: /netbsd-src/sys/arch/amiga/dev/ite.c (revision ce2c90c7c172d95d2402a5b3d96d8f8e6d138a21)
1 /*	$NetBSD: ite.c,v 1.75 2006/10/01 18:56:21 elad Exp $ */
2 
3 /*
4  * Copyright (c) 1990 The Regents of the University of California.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * the Systems Programming Group of the University of Utah Computer
9  * Science Department.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  *
35  *	from: Utah Hdr: ite.c 1.1 90/07/09
36  *	@(#)ite.c 7.6 (Berkeley) 5/16/91
37  */
38 /*
39  * Copyright (c) 1988 University of Utah.
40  *
41  * This code is derived from software contributed to Berkeley by
42  * the Systems Programming Group of the University of Utah Computer
43  * Science Department.
44  *
45  * Redistribution and use in source and binary forms, with or without
46  * modification, are permitted provided that the following conditions
47  * are met:
48  * 1. Redistributions of source code must retain the above copyright
49  *    notice, this list of conditions and the following disclaimer.
50  * 2. Redistributions in binary form must reproduce the above copyright
51  *    notice, this list of conditions and the following disclaimer in the
52  *    documentation and/or other materials provided with the distribution.
53  * 3. All advertising materials mentioning features or use of this software
54  *    must display the following acknowledgement:
55  *      This product includes software developed by the University of
56  *      California, Berkeley and its contributors.
57  * 4. Neither the name of the University nor the names of its contributors
58  *    may be used to endorse or promote products derived from this software
59  *    without specific prior written permission.
60  *
61  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
62  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
63  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
64  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
65  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
66  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
67  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
68  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
69  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
70  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
71  * SUCH DAMAGE.
72  *
73  *	from: Utah Hdr: ite.c 1.1 90/07/09
74  *	@(#)ite.c 7.6 (Berkeley) 5/16/91
75  */
76 
77 /*
78  * ite - bitmaped terminal.
79  * Supports VT200, a few terminal features will be unavailable until
80  * the system actually probes the device (i.e. not after consinit())
81  */
82 
83 #include "opt_ddb.h"
84 
85 #include <sys/cdefs.h>
86 __KERNEL_RCSID(0, "$NetBSD: ite.c,v 1.75 2006/10/01 18:56:21 elad Exp $");
87 
88 #include <sys/param.h>
89 #include <sys/kernel.h>
90 #include <sys/device.h>
91 #include <sys/fcntl.h>
92 #include <sys/malloc.h>
93 #include <sys/ioctl.h>
94 #include <sys/tty.h>
95 #include <sys/termios.h>
96 #include <sys/systm.h>
97 #include <sys/callout.h>
98 #include <sys/proc.h>
99 #include <dev/cons.h>
100 #include <sys/kauth.h>
101 #include <amiga/amiga/cc.h>
102 #include <amiga/amiga/color.h>	/* DEBUG */
103 #include <amiga/amiga/custom.h>	/* DEBUG */
104 #include <amiga/amiga/device.h>
105 #if defined(__m68k__)
106 #include <amiga/amiga/isr.h>
107 #endif
108 #include <amiga/dev/iteioctl.h>
109 #include <amiga/dev/itevar.h>
110 #include <amiga/dev/kbdmap.h>
111 #include <amiga/dev/grfioctl.h>
112 #include <amiga/dev/grfvar.h>
113 
114 #include <machine/cpu.h>	/* for is_draco() */
115 
116 #include <sys/conf.h>
117 
118 #include "grfcc.h"
119 #include "ite.h"
120 
121 /*
122  * XXX go ask sys/kern/tty.c:ttselect()
123  */
124 
125 #define ITEUNIT(dev)	(minor(dev))
126 
127 #define SUBR_INIT(ip)		(ip)->grf->g_iteinit(ip)
128 #define SUBR_DEINIT(ip)		(ip)->grf->g_itedeinit(ip)
129 #define SUBR_PUTC(ip,c,dy,dx,m)	(ip)->grf->g_iteputc(ip,c,dy,dx,m)
130 #define SUBR_CURSOR(ip,flg)	(ip)->grf->g_itecursor(ip,flg)
131 #define SUBR_CLEAR(ip,sy,sx,h,w)	(ip)->grf->g_iteclear(ip,sy,sx,h,w)
132 #define SUBR_SCROLL(ip,sy,sx,count,dir)	\
133     (ip)->grf->g_itescroll(ip,sy,sx,count,dir)
134 
135 int	start_repeat_timeo = 30;	/* first repeat after x s/100 */
136 int	next_repeat_timeo = 10;		/* next repeat after x s/100 */
137 
138 int	ite_default_wrap = 1;		/* you want vtxxx-nam, binpatch */
139 
140 struct	ite_softc con_itesoftc;
141 u_char	cons_tabs[MAX_TABS];
142 
143 struct ite_softc *kbd_ite;
144 
145 /* audio bell stuff */
146 u_int bvolume = 10;
147 u_int bpitch = 660;
148 u_int bmsec = 75;
149 
150 static char *bsamplep;
151 static char sample[20] = {
152 	0,39,75,103,121,127,121,103,75,39,0,
153 	-39,-75,-103,-121,-127,-121,-103,-75,-39
154 };
155 
156 void iteputchar(int c, struct ite_softc *ip);
157 void ite_putstr(const char * s, int len, dev_t dev);
158 void iteattach(struct device *, struct device *, void *);
159 int itematch(struct device *, struct cfdata *, void *);
160 static void iteprecheckwrap(struct ite_softc *);
161 static void itecheckwrap(struct ite_softc *);
162 struct ite_softc *getitesp(dev_t);
163 void init_bell(void);
164 void ite_bell(void);
165 void itecnpollc(dev_t, int);
166 static void repeat_handler(void *);
167 inline static void ite_sendstr(const char *);
168 static void alignment_display(struct ite_softc *);
169 inline static void snap_cury(struct ite_softc *);
170 inline static void ite_dnchar(struct ite_softc *, int);
171 inline static void ite_inchar(struct ite_softc *, int);
172 inline static void ite_clrtoeol(struct ite_softc *);
173 inline static void ite_clrtobol(struct ite_softc *);
174 inline static void ite_clrline(struct ite_softc *);
175 inline static void ite_clrtoeos(struct ite_softc *);
176 inline static void ite_clrtobos(struct ite_softc *);
177 inline static void ite_clrscreen(struct ite_softc *);
178 inline static void ite_dnline(struct ite_softc *, int);
179 inline static void ite_inline(struct ite_softc *, int);
180 inline static void ite_lf(struct ite_softc *);
181 inline static void ite_crlf(struct ite_softc *);
182 inline static void ite_cr(struct ite_softc *);
183 inline static void ite_rlf(struct ite_softc *);
184 inline static int atoi(const char *);
185 inline static int ite_argnum(struct ite_softc *);
186 inline static int ite_zargnum(struct ite_softc *);
187 
188 CFATTACH_DECL(ite, sizeof(struct ite_softc),
189     itematch, iteattach, NULL, NULL);
190 
191 extern struct cfdriver ite_cd;
192 
193 dev_type_open(iteopen);
194 dev_type_close(iteclose);
195 dev_type_read(iteread);
196 dev_type_write(itewrite);
197 dev_type_ioctl(iteioctl);
198 dev_type_tty(itetty);
199 dev_type_poll(itepoll);
200 
201 const struct cdevsw ite_cdevsw = {
202 	iteopen, iteclose, iteread, itewrite, iteioctl,
203 	nostop, itetty, itepoll, nommap, ttykqfilter, D_TTY
204 };
205 
206 int
207 itematch(struct device *pdp, struct cfdata *cfp, void *auxp)
208 {
209 	struct grf_softc *gp;
210 	int maj;
211 
212 	gp = auxp;
213 
214 	/*
215 	 * XXX
216 	 * normally this would be done in attach, however
217 	 * during early init we do not have a device pointer
218 	 * and thus no unit number.
219 	 */
220 	maj = cdevsw_lookup_major(&ite_cdevsw);
221 	gp->g_itedev = makedev(maj, cfp->cf_unit);
222 	return(1);
223 }
224 
225 void
226 iteattach(struct device *pdp, struct device *dp, void *auxp)
227 {
228 	struct grf_softc *gp;
229 	struct ite_softc *ip;
230 	int s;
231 
232 	gp = (struct grf_softc *)auxp;
233 	if (dp) {
234 		ip = (struct ite_softc *)dp;
235 
236 		s = spltty();
237 		if (con_itesoftc.grf != NULL &&
238 		    con_itesoftc.grf->g_unit == gp->g_unit) {
239 			/*
240 			 * console reinit copy params over.
241 			 * and console always gets keyboard
242 			 */
243 			bcopy(&con_itesoftc.grf, &ip->grf,
244 			    (char *)&ip[1] - (char *)&ip->grf);
245 			con_itesoftc.grf = NULL;
246 			kbd_ite = ip;
247 		}
248 		ip->grf = gp;
249 		splx(s);
250 
251 		alloc_sicallback();
252 		iteinit(gp->g_itedev);
253 		printf(": rows %d cols %d", ip->rows, ip->cols);
254 		printf(" repeat at (%d/100)s next at (%d/100)s",
255 		    start_repeat_timeo, next_repeat_timeo);
256 
257 		if (kbd_ite == NULL)
258 			kbd_ite = ip;
259 		if (kbd_ite == ip)
260 			printf(" has keyboard");
261 		printf("\n");
262 		ip->flags |= ITE_ATTACHED;
263 	} else {
264 		if (con_itesoftc.grf != NULL &&
265 		    con_itesoftc.grf->g_conpri > gp->g_conpri)
266 			return;
267 		con_itesoftc.grf = gp;
268 		con_itesoftc.tabs = cons_tabs;
269 	}
270 }
271 
272 struct ite_softc *
273 getitesp(dev_t dev)
274 {
275 	if (amiga_realconfig && con_itesoftc.grf == NULL)
276 		return(ite_cd.cd_devs[ITEUNIT(dev)]);
277 
278 	if (con_itesoftc.grf == NULL)
279 		panic("no ite_softc for console");
280 	return(&con_itesoftc);
281 }
282 
283 /*
284  * cons.c entry points into ite device.
285  */
286 
287 /*
288  * Return a priority in consdev->cn_pri field highest wins.  This function
289  * is called before any devices have been probed.
290  */
291 void
292 itecnprobe(struct consdev *cd)
293 {
294 	/*
295 	 * bring graphics layer up.
296 	 */
297 	config_console();
298 
299 	/*
300 	 * return priority of the best ite (already picked from attach)
301 	 * or CN_DEAD.
302 	 */
303 	if (con_itesoftc.grf == NULL)
304 		cd->cn_pri = CN_DEAD;
305 	else {
306 		cd->cn_pri = con_itesoftc.grf->g_conpri;
307 		cd->cn_dev = con_itesoftc.grf->g_itedev;
308 	}
309 }
310 
311 /* audio bell stuff */
312 void
313 init_bell(void)
314 {
315 	if (bsamplep != NULL)
316 		return;
317 	bsamplep = alloc_chipmem(20);
318 	if (bsamplep == NULL)
319 		panic("no chipmem for ite_bell");
320 
321 	bcopy(sample, bsamplep, 20);
322 }
323 
324 void
325 ite_bell(void)
326 {
327 	u_int clock;
328 	u_int period;
329 	u_int count;
330 
331 	clock = 3579545; 	/* PAL 3546895 */
332 
333 	/*
334 	 * the number of clock ticks per sample byte must be > 124
335 	 * ergo bpitch must be < clock / 124*20
336 	 * i.e. ~1443, 1300 to be safe (PAL etc.). also not zero obviously
337 	 */
338 	period = clock / (bpitch * 20);
339 	count = bmsec * bpitch / 1000;
340 
341 	play_sample(10, PREP_DMA_MEM(bsamplep), period, bvolume, 0x3, count);
342 }
343 
344 void
345 itecninit(struct consdev *cd)
346 {
347 	struct ite_softc *ip;
348 
349 	ip = getitesp(cd->cn_dev);
350 	iteinit(cd->cn_dev);
351 	ip->flags |= ITE_ACTIVE | ITE_ISCONS;
352 
353 #ifdef DRACO
354 	if (!is_draco())
355 #endif
356 	init_bell();
357 }
358 
359 /*
360  * ite_cnfinish() is called in ite_init() when the device is
361  * being probed in the normal fasion, thus we can finish setting
362  * up this ite now that the system is more functional.
363  */
364 void
365 ite_cnfinish(struct ite_softc *ip)
366 {
367 	static int done;
368 
369 	if (done)
370 		return;
371 	done = 1;
372 }
373 
374 int
375 itecngetc(dev_t dev)
376 {
377 	int c;
378 
379 	/* XXX this should be moved */
380 	kbdenable();
381 	do {
382 		c = kbdgetcn();
383 		c = ite_cnfilter(c, ITEFILT_CONSOLE);
384 	} while (c == -1);
385 	return (c);
386 }
387 
388 void
389 itecnputc(dev_t dev, int c)
390 {
391 	static int paniced;
392 	struct ite_softc *ip;
393 	char ch;
394 
395 	ip = getitesp(dev);
396 	ch = c;
397 
398 	if (panicstr && !paniced &&
399 	    (ip->flags & (ITE_ACTIVE | ITE_INGRF)) != ITE_ACTIVE) {
400 		ite_on(dev, 3);
401 		paniced = 1;
402 	}
403 	iteputchar(ch, ip);
404 }
405 
406 void
407 itecnpollc(dev_t dev, int on)
408 {
409 }
410 
411 /*
412  * standard entry points to the device.
413  */
414 
415 /*
416  * iteinit() is the standard entry point for initialization of
417  * an ite device, it is also called from ite_cninit().
418  *
419  */
420 void
421 iteinit(dev_t dev)
422 {
423 	struct ite_softc *ip;
424 	static int kbdmap_loaded = 0;
425 
426 	ip = getitesp(dev);
427 	if (ip->flags & ITE_INITED)
428 		return;
429 	if (kbdmap_loaded == 0) {
430 		bcopy(&ascii_kbdmap, &kbdmap, sizeof(struct kbdmap));
431 		kbdmap_loaded = 1;
432 	}
433 
434 	ip->cursorx = 0;
435 	ip->cursory = 0;
436 	SUBR_INIT(ip);
437 	SUBR_CURSOR(ip, DRAW_CURSOR);
438 	if (ip->tabs == NULL)
439 		ip->tabs = malloc(MAX_TABS * sizeof(u_char),M_DEVBUF,M_WAITOK);
440 	ite_reset(ip);
441 	ip->flags |= ITE_INITED;
442 }
443 
444 int
445 iteopen(dev_t dev, int mode, int devtype, struct lwp *l)
446 {
447 	struct ite_softc *ip;
448 	struct tty *tp;
449 	int error, first, unit;
450 
451 	unit = ITEUNIT(dev);
452 	first = 0;
453 
454 	if (unit >= ite_cd.cd_ndevs)
455 		return ENXIO;
456 	ip = getitesp(dev);
457 	if (ip == NULL)
458 		return ENXIO;
459 	if ((ip->flags & ITE_ATTACHED) == 0)
460 		return ENXIO;
461 
462 	if (ip->tp == NULL) {
463 		tp = ip->tp = ttymalloc();
464 		tty_attach(tp);
465 	} else
466 		tp = ip->tp;
467 
468 	if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp))
469 		return (EBUSY);
470 
471 	if ((ip->flags & ITE_ACTIVE) == 0) {
472 		ite_on(dev, 0);
473 		first = 1;
474 	}
475 	tp->t_oproc = itestart;
476 	tp->t_param = ite_param;
477 	tp->t_dev = dev;
478 	if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) {
479 		ttychars(tp);
480 		tp->t_iflag = TTYDEF_IFLAG;
481 		tp->t_oflag = TTYDEF_OFLAG;
482 		tp->t_cflag = TTYDEF_CFLAG;
483 		tp->t_lflag = TTYDEF_LFLAG;
484 		tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
485 		tp->t_state = TS_CARR_ON;
486 		ttsetwater(tp);
487 	}
488 	error = ttyopen(tp, 0, mode & O_NONBLOCK);
489 	if (error)
490 		goto bad;
491 
492 	error = tp->t_linesw->l_open(dev, tp);
493 	if (error)
494 		goto bad;
495 
496 	tp->t_winsize.ws_row = ip->rows;
497 	tp->t_winsize.ws_col = ip->cols;
498 	kbdenable();
499 	return (0);
500 bad:
501 	if (first)
502 		ite_off(dev, 0);
503 	return (error);
504 }
505 
506 int
507 iteclose(dev_t dev, int flag, int mode, struct lwp *l)
508 {
509 	struct tty *tp;
510 
511 	tp = getitesp(dev)->tp;
512 
513 	KDASSERT(tp);
514 	tp->t_linesw->l_close(tp, flag);
515 	ttyclose(tp);
516 	ite_off(dev, 0);
517 	return (0);
518 }
519 
520 int
521 iteread(dev_t dev, struct uio *uio, int flag)
522 {
523 	struct tty *tp;
524 
525 	tp = getitesp(dev)->tp;
526 
527 	KDASSERT(tp);
528 	return tp->t_linesw->l_read(tp, uio, flag);
529 }
530 
531 int
532 itewrite(dev_t dev, struct uio *uio, int flag)
533 {
534 	struct tty *tp;
535 
536 	tp = getitesp(dev)->tp;
537 
538 	KDASSERT(tp);
539 	return tp->t_linesw->l_write(tp, uio, flag);
540 }
541 
542 int
543 itepoll(dev_t dev, int events, struct lwp *l)
544 {
545 	struct tty *tp;
546 
547 	tp = getitesp(dev)->tp;
548 
549 	KDASSERT(tp);
550 	return ((*tp->t_linesw->l_poll)(tp, events, l));
551 }
552 
553 struct tty *
554 itetty(dev_t dev)
555 {
556 	return (getitesp(dev)->tp);
557 }
558 
559 int
560 iteioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l)
561 {
562 	struct iterepeat *irp;
563 	struct ite_softc *ip;
564 	struct itebell *ib;
565 	struct tty *tp;
566 	int error;
567 
568 	ip = getitesp(dev);
569 	tp = ip->tp;
570 
571 	KDASSERT(tp);
572 
573 	error = tp->t_linesw->l_ioctl(tp, cmd, addr, flag, l);
574 	if (error != EPASSTHROUGH)
575 		return (error);
576 	error = ttioctl(tp, cmd, addr, flag, l);
577 	if (error != EPASSTHROUGH)
578 		return (error);
579 
580 	switch (cmd) {
581 	case ITEIOCGBELL:
582 		ib = (struct itebell *)addr;
583 		ib->volume = bvolume;
584 		ib->pitch = bpitch;
585 		ib->msec = bmsec;
586 		return (0);
587 	case ITEIOCSBELL:
588 		ib = (struct itebell *)addr;
589 
590 		if (ib->pitch > MAXBPITCH || ib->pitch < MINBPITCH ||
591 		    ib->volume > MAXBVOLUME || ib->msec > MAXBTIME)
592 			return (EINVAL);
593 		bvolume = ib->volume;
594 		bpitch = ib->pitch;
595 		bmsec = ib->msec;
596 		return (0);
597 	case ITEIOCSKMAP:
598 		if (addr == 0)
599 			return(EFAULT);
600 		bcopy(addr, &kbdmap, sizeof(struct kbdmap));
601 		return(0);
602 	case ITEIOCGKMAP:
603 		if (addr == NULL)
604 			return(EFAULT);
605 		bcopy(&kbdmap, addr, sizeof(struct kbdmap));
606 		return(0);
607 	case ITEIOCGREPT:
608 		irp = (struct iterepeat *)addr;
609 		irp->start = start_repeat_timeo;
610 		irp->next = next_repeat_timeo;
611 		return (0);
612 	case ITEIOCSREPT:
613 		irp = (struct iterepeat *)addr;
614 		if (irp->start < ITEMINREPEAT && irp->next < ITEMINREPEAT)
615 			return(EINVAL);
616 		start_repeat_timeo = irp->start;
617 		next_repeat_timeo = irp->next;
618 		return(0);
619 	}
620 #if NGRFCC > 0
621 	/* XXX */
622 	if (minor(dev) == 0) {
623 		error = ite_grf_ioctl(ip, cmd, addr, flag, l);
624 		if (error >= 0)
625 			return (error);
626 	}
627 #endif
628 	return (EPASSTHROUGH);
629 }
630 
631 void
632 itestart(struct tty *tp)
633 {
634 	struct clist *rbp;
635 	struct ite_softc *ip;
636 	u_char buf[ITEBURST];
637 	int s, len;
638 
639 	ip = getitesp(tp->t_dev);
640 
641 	KDASSERT(tp);
642 
643 	s = spltty(); {
644 		if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))
645 			goto out;
646 
647 		tp->t_state |= TS_BUSY;
648 		rbp = &tp->t_outq;
649 
650 		len = q_to_b(rbp, buf, ITEBURST);
651 	} splx(s);
652 
653 	/* Here is a really good place to implement pre/jumpscroll() */
654 	ite_putstr(buf, len, tp->t_dev);
655 
656 	s = spltty(); {
657 		tp->t_state &= ~TS_BUSY;
658 		/* we have characters remaining. */
659 		if (rbp->c_cc) {
660 			tp->t_state |= TS_TIMEOUT;
661 			callout_reset(&tp->t_rstrt_ch, 1, ttrstrt, tp);
662 		}
663 		/* wakeup we are below */
664 		if (rbp->c_cc <= tp->t_lowat) {
665 			if (tp->t_state & TS_ASLEEP) {
666 				tp->t_state &= ~TS_ASLEEP;
667 				wakeup((caddr_t) rbp);
668 			}
669 			selwakeup(&tp->t_wsel);
670 		}
671 	}
672  out:
673 	splx(s);
674 }
675 
676 void
677 ite_on(dev_t dev, int flag)
678 {
679 	struct ite_softc *ip;
680 	int unit;
681 
682 	unit = ITEUNIT(dev);
683 	ip = getitesp(dev);
684 
685 	/* force ite active, overriding graphics mode */
686 	if (flag & 1) {
687 		ip->flags |= ITE_ACTIVE;
688 		ip->flags &= ~(ITE_INGRF | ITE_INITED);
689 	}
690 	/* leave graphics mode */
691 	if (flag & 2) {
692 		ip->flags &= ~ITE_INGRF;
693 		if ((ip->flags & ITE_ACTIVE) == 0)
694 			return;
695 	}
696 	ip->flags |= ITE_ACTIVE;
697 	if (ip->flags & ITE_INGRF)
698 		return;
699 	iteinit(dev);
700 }
701 
702 void
703 ite_off(dev_t dev, int flag)
704 {
705 	struct ite_softc *ip;
706 
707 	ip = getitesp(dev);
708 	if (flag & 2)
709 		ip->flags |= ITE_INGRF;
710 	if ((ip->flags & ITE_ACTIVE) == 0)
711 		return;
712 	if ((flag & 1) ||
713 	    (ip->flags & (ITE_INGRF | ITE_ISCONS | ITE_INITED)) == ITE_INITED)
714 		SUBR_DEINIT(ip);
715 	/* XXX hmm grfon() I think wants this to  go inactive. */
716 	if ((flag & 2) == 0)
717 		ip->flags &= ~ITE_ACTIVE;
718 }
719 
720 /* XXX called after changes made in underlying grf layer. */
721 /* I want to nuke this */
722 void
723 ite_reinit(dev_t dev)
724 {
725 	struct ite_softc *ip;
726 
727 	ip = getitesp(dev);
728 	ip->flags &= ~ITE_INITED;
729 	iteinit(dev);
730 }
731 
732 int
733 ite_param(struct tty *tp, struct termios *t)
734 {
735 	tp->t_ispeed = t->c_ispeed;
736 	tp->t_ospeed = t->c_ospeed;
737 	tp->t_cflag = t->c_cflag;
738 	return (0);
739 }
740 
741 void
742 ite_reset(struct ite_softc *ip)
743 {
744 	int i;
745 
746 	ip->curx = 0;
747 	ip->cury = 0;
748 	ip->attribute = ATTR_NOR;
749 	ip->save_curx = 0;
750 	ip->save_cury = 0;
751 	ip->save_attribute = ATTR_NOR;
752 	ip->ap = ip->argbuf;
753 	ip->emul_level = 0;
754 	ip->eightbit_C1 = 0;
755 	ip->top_margin = 0;
756 	ip->bottom_margin = ip->rows - 1;
757 	ip->inside_margins = 0;
758 	ip->linefeed_newline = 0;
759 	ip->auto_wrap = ite_default_wrap;
760 	ip->cursor_appmode = 0;
761 	ip->keypad_appmode = 0;
762 	ip->imode = 0;
763 	ip->key_repeat = 1;
764 	bzero(ip->tabs, ip->cols);
765 	for (i = 0; i < ip->cols; i++)
766 		ip->tabs[i] = ((i & 7) == 0);
767 }
768 
769 /*
770  * has to be global because of the shared filters.
771  */
772 static u_char key_mod;
773 static u_char last_dead;
774 
775 /* Used in console at startup only */
776 int
777 ite_cnfilter(u_char c, enum caller caller)
778 {
779 	struct key key;
780 	u_char code, up, mask;
781 	int s, i;
782 
783 	up = c & 0x80 ? 1 : 0;
784 	c &= 0x7f;
785 	code = 0;
786 
787 	s = spltty();
788 
789 	i = (int)c - KBD_LEFT_SHIFT;
790 	if (i >= 0 && i <= (KBD_RIGHT_META - KBD_LEFT_SHIFT)) {
791 		mask = 1 << i;
792 		if (up)
793 			key_mod &= ~mask;
794 		else
795 			key_mod |= mask;
796 		splx(s);
797 		return -1;
798 	}
799 
800 	if (up) {
801 		splx(s);
802 		return -1;
803 	}
804 
805 	/* translate modifiers */
806 	if (key_mod & KBD_MOD_SHIFT) {
807 		if (key_mod & KBD_MOD_ALT)
808 			key = kbdmap.alt_shift_keys[c];
809 		else
810 			key = kbdmap.shift_keys[c];
811 	} else if (key_mod & KBD_MOD_ALT)
812 		key = kbdmap.alt_keys[c];
813 	else {
814 		key = kbdmap.keys[c];
815 		/* if CAPS and key is CAPable (no pun intended) */
816 		if ((key_mod & KBD_MOD_CAPS) && (key.mode & KBD_MODE_CAPS))
817 			key = kbdmap.shift_keys[c];
818 	}
819 	code = key.code;
820 
821 	/* if string return */
822 	if (key.mode & (KBD_MODE_STRING | KBD_MODE_KPAD)) {
823 		splx(s);
824 		return -1;
825 	}
826 	/* handle dead keys */
827 	if (key.mode & KBD_MODE_DEAD) {
828 		/* if entered twice, send accent itself */
829 		if (last_dead == (key.mode & KBD_MODE_ACCMASK))
830 			last_dead = 0;
831 		else {
832 			last_dead = key.mode & KBD_MODE_ACCMASK;
833 			splx(s);
834 			return -1;
835 		}
836 	}
837 	if (last_dead) {
838 		/* can't apply dead flag to string-keys */
839 		if (code >= '@' && code < 0x7f)
840 			code =
841 			    acctable[KBD_MODE_ACCENT(last_dead)][code - '@'];
842 		last_dead = 0;
843 	}
844 	if (key_mod & KBD_MOD_CTRL)
845 		code &= 0x1f;
846 	if (key_mod & KBD_MOD_META)
847 		code |= 0x80;
848 
849 	/* do console mapping. */
850 	code = code == '\r' ? '\n' : code;
851 
852 	splx(s);
853 	return (code);
854 }
855 
856 /* And now the old stuff. */
857 
858 /* these are used to implement repeating keys.. */
859 static u_char last_char;
860 static u_char tout_pending;
861 
862 static struct callout repeat_ch = CALLOUT_INITIALIZER;
863 
864 /*ARGSUSED*/
865 static void
866 repeat_handler(void *arg)
867 {
868 	tout_pending = 0;
869 	if (last_char)
870 		ite_filter(last_char, ITEFILT_REPEATER);
871 }
872 
873 void
874 ite_filter(u_char c, enum caller caller)
875 {
876 	struct tty *kbd_tty;
877 	u_char code, *str, up, mask;
878 	struct key key;
879 	int s, i;
880 
881 	if (kbd_ite == NULL || kbd_ite->tp == NULL)
882 		return;
883 
884 	kbd_tty = kbd_ite->tp;
885 
886 	/* have to make sure we're at spltty in here */
887 	s = spltty();
888 
889 	/*
890 	 * keyboard interrupts come at priority 2, while softint
891 	 * generated keyboard-repeat interrupts come at level 1.  So,
892 	 * to not allow a key-up event to get thru before a repeat for
893 	 * the key-down, we remove any outstanding callout requests..
894 	rem_sicallback(ite_sifilter);
895 	 */
896 
897 	up = c & 0x80 ? 1 : 0;
898 	c &= 0x7f;
899 	code = 0;
900 
901 	i = (int)c - KBD_LEFT_SHIFT;
902 	if (i >= 0 && i <= (KBD_RIGHT_META - KBD_LEFT_SHIFT)) {
903 		mask = 1 << i;
904 		if (up)
905 			key_mod &= ~mask;
906 		else
907 			key_mod |= mask;
908 		splx(s);
909 		return;
910 	}
911 	/* stop repeating on up event */
912 	if (up) {
913 		if (tout_pending) {
914 			callout_stop(&repeat_ch);
915 			tout_pending = 0;
916 			last_char = 0;
917 		}
918 		splx(s);
919 		return;
920 	} else if (tout_pending && last_char != c) {
921 		/* different character, stop also */
922 		callout_stop(&repeat_ch);
923 		tout_pending = 0;
924 		last_char = 0;
925 	}
926 	/* Safety button, switch back to ascii keymap. */
927 	if (key_mod == (KBD_MOD_LALT | KBD_MOD_LMETA) && c == 0x50) {
928 		bcopy(&ascii_kbdmap, &kbdmap, sizeof(struct kbdmap));
929 
930 		splx(s);
931 		return;
932 #ifdef DDB
933 	} else if (key_mod == (KBD_MOD_LALT | KBD_MOD_LMETA) && c == 0x59) {
934 		Debugger();
935 		splx(s);
936 		return;
937 #endif
938 	}
939 	/* translate modifiers */
940 	if (key_mod & KBD_MOD_SHIFT) {
941 		if (key_mod & KBD_MOD_ALT)
942 			key = kbdmap.alt_shift_keys[c];
943 		else
944 			key = kbdmap.shift_keys[c];
945 	} else if (key_mod & KBD_MOD_ALT)
946 		key = kbdmap.alt_keys[c];
947 	else {
948 		key = kbdmap.keys[c];
949 		/* if CAPS and key is CAPable (no pun intended) */
950 		if ((key_mod & KBD_MOD_CAPS) && (key.mode & KBD_MODE_CAPS))
951 			key = kbdmap.shift_keys[c];
952 	}
953 	code = key.code;
954 
955 	/*
956 	 * arrange to repeat the keystroke. By doing this at the level
957 	 * of scan-codes, we can have function keys, and keys that
958 	 * send strings, repeat too. This also entitles an additional
959 	 * overhead, since we have to do the conversion each time, but
960 	 * I guess that's ok.
961 	 */
962 	if (!tout_pending && caller == ITEFILT_TTY && kbd_ite->key_repeat) {
963 		tout_pending = 1;
964 		last_char = c;
965 		callout_reset(&repeat_ch,
966 		    start_repeat_timeo * hz / 100, repeat_handler, NULL);
967 	} else if (!tout_pending && caller == ITEFILT_REPEATER &&
968 	    kbd_ite->key_repeat) {
969 		tout_pending = 1;
970 		last_char = c;
971 		callout_reset(&repeat_ch,
972 		    next_repeat_timeo * hz / 100, repeat_handler, NULL);
973 	}
974 	/* handle dead keys */
975 	if (key.mode & KBD_MODE_DEAD) {
976 		/* if entered twice, send accent itself */
977 		if (last_dead == (key.mode & KBD_MODE_ACCMASK))
978 			last_dead = 0;
979 		else {
980 			last_dead = key.mode & KBD_MODE_ACCMASK;
981 			splx(s);
982 			return;
983 		}
984 	}
985 	if (last_dead) {
986 		/* can't apply dead flag to string-keys */
987 		if (!(key.mode & KBD_MODE_STRING) && code >= '@' &&
988 		    code < 0x7f)
989 			code = acctable[KBD_MODE_ACCENT(last_dead)][code - '@'];
990 		last_dead = 0;
991 	}
992 	/* if not string, apply META and CTRL modifiers */
993 	if (!(key.mode & KBD_MODE_STRING)
994 	    && (!(key.mode & KBD_MODE_KPAD) ||
995 		(kbd_ite && !kbd_ite->keypad_appmode))) {
996 		if (key_mod & KBD_MOD_CTRL)
997 			code &= 0x1f;
998 		if (key_mod & KBD_MOD_META)
999 			code |= 0x80;
1000 	} else if ((key.mode & KBD_MODE_KPAD) &&
1001 	    (kbd_ite && kbd_ite->keypad_appmode)) {
1002 		static char in[] = {
1003 		    0x0f /* 0 */, 0x1d /* 1 */, 0x1e /* 2 */, 0x1f /* 3 */,
1004 		    0x2d /* 4 */, 0x2e /* 5 */, 0x2f /* 6 */, 0x3d /* 7 */,
1005 		    0x3e /* 8 */, 0x3f /* 9 */, 0x4a /* - */, 0x5e /* + */,
1006 		    0x3c /* . */, 0x43 /* e */, 0x5a /* ( */, 0x5b /* ) */,
1007 		    0x5c /* / */, 0x5d /* * */
1008 		};
1009 		static const char *out = "pqrstuvwxymlnMPQRS";
1010 		char *cp = strchr(in, c);
1011 
1012 		/*
1013 		 * keypad-appmode sends SS3 followed by the above
1014 		 * translated character
1015 		 */
1016 		kbd_tty->t_linesw->l_rint(27, kbd_tty);
1017 		kbd_tty->t_linesw->l_rint('O', kbd_tty);
1018 		kbd_tty->t_linesw->l_rint(out[cp - in], kbd_tty);
1019 		splx(s);
1020 		return;
1021 	} else {
1022 		/* *NO* I don't like this.... */
1023 		static u_char app_cursor[] =
1024 		{
1025 		    3, 27, 'O', 'A',
1026 		    3, 27, 'O', 'B',
1027 		    3, 27, 'O', 'C',
1028 		    3, 27, 'O', 'D'};
1029 
1030 		str = kbdmap.strings + code;
1031 		/*
1032 		 * if this is a cursor key, AND it has the default
1033 		 * keymap setting, AND we're in app-cursor mode, switch
1034 		 * to the above table. This is *nasty* !
1035 		 */
1036 		if (c >= 0x4c && c <= 0x4f && kbd_ite->cursor_appmode
1037 		    && !bcmp(str, "\x03\x1b[", 3) &&
1038 		    strchr("ABCD", str[3]))
1039 			str = app_cursor + 4 * (str[3] - 'A');
1040 
1041 		/*
1042 		 * using a length-byte instead of 0-termination allows
1043 		 * to embed \0 into strings, although this is not used
1044 		 * in the default keymap
1045 		 */
1046 		for (i = *str++; i; i--)
1047 			kbd_tty->t_linesw->l_rint(*str++, kbd_tty);
1048 		splx(s);
1049 		return;
1050 	}
1051 	kbd_tty->t_linesw->l_rint(code, kbd_tty);
1052 
1053 	splx(s);
1054 	return;
1055 }
1056 
1057 /* helper functions, makes the code below more readable */
1058 inline static void
1059 ite_sendstr(const char *str)
1060 {
1061 	struct tty *kbd_tty;
1062 
1063 	kbd_tty = kbd_ite->tp;
1064 	KDASSERT(kbd_tty);
1065 	while (*str)
1066 		kbd_tty->t_linesw->l_rint(*str++, kbd_tty);
1067 }
1068 
1069 static void
1070 alignment_display(struct ite_softc *ip)
1071 {
1072   int i, j;
1073 
1074   for (j = 0; j < ip->rows; j++)
1075     for (i = 0; i < ip->cols; i++)
1076       SUBR_PUTC(ip, 'E', j, i, ATTR_NOR);
1077   attrclr(ip, 0, 0, ip->rows, ip->cols);
1078   SUBR_CURSOR(ip, DRAW_CURSOR);
1079 }
1080 
1081 inline static void
1082 snap_cury(struct ite_softc *ip)
1083 {
1084   if (ip->inside_margins)
1085     {
1086       if (ip->cury < ip->top_margin)
1087 	ip->cury = ip->top_margin;
1088       if (ip->cury > ip->bottom_margin)
1089 	ip->cury = ip->bottom_margin;
1090     }
1091 }
1092 
1093 inline static void
1094 ite_dnchar(struct ite_softc *ip, int n)
1095 {
1096   n = min(n, ip->cols - ip->curx);
1097   if (n < ip->cols - ip->curx)
1098     {
1099       SUBR_SCROLL(ip, ip->cury, ip->curx + n, n, SCROLL_LEFT);
1100       attrmov(ip, ip->cury, ip->curx + n, ip->cury, ip->curx,
1101 	      1, ip->cols - ip->curx - n);
1102       attrclr(ip, ip->cury, ip->cols - n, 1, n);
1103     }
1104   while (n-- > 0)
1105     SUBR_PUTC(ip, ' ', ip->cury, ip->cols - n - 1, ATTR_NOR);
1106   SUBR_CURSOR(ip, DRAW_CURSOR);
1107 }
1108 
1109 inline static void
1110 ite_inchar(struct ite_softc *ip, int n)
1111 {
1112   n = min(n, ip->cols - ip->curx);
1113   if (n < ip->cols - ip->curx)
1114     {
1115       SUBR_SCROLL(ip, ip->cury, ip->curx, n, SCROLL_RIGHT);
1116       attrmov(ip, ip->cury, ip->curx, ip->cury, ip->curx + n,
1117 	      1, ip->cols - ip->curx - n);
1118       attrclr(ip, ip->cury, ip->curx, 1, n);
1119     }
1120   while (n--)
1121     SUBR_PUTC(ip, ' ', ip->cury, ip->curx + n, ATTR_NOR);
1122   SUBR_CURSOR(ip, DRAW_CURSOR);
1123 }
1124 
1125 inline static void
1126 ite_clrtoeol(struct ite_softc *ip)
1127 {
1128   int y = ip->cury, x = ip->curx;
1129   if (ip->cols - x > 0)
1130     {
1131       SUBR_CLEAR(ip, y, x, 1, ip->cols - x);
1132       attrclr(ip, y, x, 1, ip->cols - x);
1133       SUBR_CURSOR(ip, DRAW_CURSOR);
1134     }
1135 }
1136 
1137 inline static void
1138 ite_clrtobol(struct ite_softc *ip)
1139 {
1140   int y = ip->cury, x = min(ip->curx + 1, ip->cols);
1141   SUBR_CLEAR(ip, y, 0, 1, x);
1142   attrclr(ip, y, 0, 1, x);
1143   SUBR_CURSOR(ip, DRAW_CURSOR);
1144 }
1145 
1146 inline static void
1147 ite_clrline(struct ite_softc *ip)
1148 {
1149   int y = ip->cury;
1150   SUBR_CLEAR(ip, y, 0, 1, ip->cols);
1151   attrclr(ip, y, 0, 1, ip->cols);
1152   SUBR_CURSOR(ip, DRAW_CURSOR);
1153 }
1154 
1155 
1156 
1157 inline static void
1158 ite_clrtoeos(struct ite_softc *ip)
1159 {
1160   ite_clrtoeol(ip);
1161   if (ip->cury < ip->rows - 1)
1162     {
1163       SUBR_CLEAR(ip, ip->cury + 1, 0, ip->rows - 1 - ip->cury, ip->cols);
1164       attrclr(ip, ip->cury, 0, ip->rows - ip->cury, ip->cols);
1165       SUBR_CURSOR(ip, DRAW_CURSOR);
1166     }
1167 }
1168 
1169 inline static void
1170 ite_clrtobos(struct ite_softc *ip)
1171 {
1172   ite_clrtobol(ip);
1173   if (ip->cury > 0)
1174     {
1175       SUBR_CLEAR(ip, 0, 0, ip->cury, ip->cols);
1176       attrclr(ip, 0, 0, ip->cury, ip->cols);
1177       SUBR_CURSOR(ip, DRAW_CURSOR);
1178     }
1179 }
1180 
1181 inline static void
1182 ite_clrscreen(struct ite_softc *ip)
1183 {
1184   SUBR_CLEAR(ip, 0, 0, ip->rows, ip->cols);
1185   attrclr(ip, 0, 0, ip->rows, ip->cols);
1186   SUBR_CURSOR(ip, DRAW_CURSOR);
1187 }
1188 
1189 
1190 
1191 inline static void
1192 ite_dnline(struct ite_softc *ip, int n)
1193 {
1194   /* interesting.. if the cursor is outside the scrolling
1195      region, this command is simply ignored.. */
1196   if (ip->cury < ip->top_margin || ip->cury > ip->bottom_margin)
1197     return;
1198 
1199   n = min(n, ip->bottom_margin + 1 - ip->cury);
1200   if (n <= ip->bottom_margin - ip->cury)
1201     {
1202       SUBR_SCROLL(ip, ip->cury + n, 0, n, SCROLL_UP);
1203       attrmov(ip, ip->cury + n, 0, ip->cury, 0,
1204 	      ip->bottom_margin + 1 - ip->cury - n, ip->cols);
1205     }
1206   SUBR_CLEAR(ip, ip->bottom_margin - n + 1, 0, n, ip->cols);
1207   attrclr(ip, ip->bottom_margin - n + 1, 0, n, ip->cols);
1208   SUBR_CURSOR(ip, DRAW_CURSOR);
1209 }
1210 
1211 inline static void
1212 ite_inline(struct ite_softc *ip, int n)
1213 {
1214   /* interesting.. if the cursor is outside the scrolling
1215      region, this command is simply ignored.. */
1216   if (ip->cury < ip->top_margin || ip->cury > ip->bottom_margin)
1217     return;
1218 
1219   n = min(n, ip->bottom_margin + 1 - ip->cury);
1220   if (n <= ip->bottom_margin - ip->cury)
1221     {
1222       SUBR_SCROLL(ip, ip->cury, 0, n, SCROLL_DOWN);
1223       attrmov(ip, ip->cury, 0, ip->cury + n, 0,
1224 	      ip->bottom_margin + 1 - ip->cury - n, ip->cols);
1225     }
1226   SUBR_CLEAR(ip, ip->cury, 0, n, ip->cols);
1227   attrclr(ip, ip->cury, 0, n, ip->cols);
1228   SUBR_CURSOR(ip, DRAW_CURSOR);
1229 }
1230 
1231 inline static void
1232 ite_lf(struct ite_softc *ip)
1233 {
1234   ++ip->cury;
1235   if ((ip->cury == ip->bottom_margin+1) || (ip->cury == ip->rows))
1236     {
1237       ip->cury--;
1238       SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1239       ite_clrline(ip);
1240     }
1241   SUBR_CURSOR(ip, MOVE_CURSOR);
1242   clr_attr(ip, ATTR_INV);
1243 }
1244 
1245 inline static void
1246 ite_crlf(struct ite_softc *ip)
1247 {
1248   ip->curx = 0;
1249   ite_lf (ip);
1250 }
1251 
1252 inline static void
1253 ite_cr(struct ite_softc *ip)
1254 {
1255   if (ip->curx)
1256     {
1257       ip->curx = 0;
1258       SUBR_CURSOR(ip, MOVE_CURSOR);
1259     }
1260 }
1261 
1262 inline static void
1263 ite_rlf(struct ite_softc *ip)
1264 {
1265   ip->cury--;
1266   if ((ip->cury < 0) || (ip->cury == ip->top_margin - 1))
1267     {
1268       ip->cury++;
1269       SUBR_SCROLL(ip, ip->top_margin, 0, 1, SCROLL_DOWN);
1270       ite_clrline(ip);
1271     }
1272   SUBR_CURSOR(ip, MOVE_CURSOR);
1273   clr_attr(ip, ATTR_INV);
1274 }
1275 
1276 inline static int
1277 atoi(const char *cp)
1278 {
1279   int n;
1280 
1281   for (n = 0; *cp && *cp >= '0' && *cp <= '9'; cp++)
1282     n = n * 10 + *cp - '0';
1283 
1284   return n;
1285 }
1286 
1287 inline static int
1288 ite_argnum(struct ite_softc *ip)
1289 {
1290   char ch;
1291   int n;
1292 
1293   /* convert argument string into number */
1294   if (ip->ap == ip->argbuf)
1295     return 1;
1296   ch = *ip->ap;
1297   *ip->ap = 0;
1298   n = atoi (ip->argbuf);
1299   *ip->ap = ch;
1300 
1301   return n;
1302 }
1303 
1304 inline static int
1305 ite_zargnum(struct ite_softc *ip)
1306 {
1307   char ch;
1308   int n;
1309 
1310   /* convert argument string into number */
1311   if (ip->ap == ip->argbuf)
1312     return 0;
1313   ch = *ip->ap;
1314   *ip->ap = 0;
1315   n = atoi (ip->argbuf);
1316   *ip->ap = ch;
1317 
1318   return n;	/* don't "n ? n : 1" here, <CSI>0m != <CSI>1m ! */
1319 }
1320 
1321 void
1322 ite_putstr(const char *s, int len, dev_t dev)
1323 {
1324 	struct ite_softc *ip;
1325 	int i;
1326 
1327 	ip = getitesp(dev);
1328 
1329 	/* XXX avoid problems */
1330 	if ((ip->flags & (ITE_ACTIVE|ITE_INGRF)) != ITE_ACTIVE)
1331 	  	return;
1332 
1333 	SUBR_CURSOR(ip, START_CURSOROPT);
1334 	for (i = 0; i < len; i++)
1335 		if (s[i])
1336 			iteputchar(s[i], ip);
1337 	SUBR_CURSOR(ip, END_CURSOROPT);
1338 }
1339 
1340 static void
1341 iteprecheckwrap(struct ite_softc *ip)
1342 {
1343 	if (ip->auto_wrap && ip->curx == ip->cols) {
1344 		ip->curx = 0;
1345 		clr_attr(ip, ATTR_INV);
1346 		if (++ip->cury >= ip->bottom_margin + 1) {
1347 			ip->cury = ip->bottom_margin;
1348 			SUBR_CURSOR(ip, MOVE_CURSOR);
1349 			SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1350 			ite_clrtoeol(ip);
1351 		} else
1352 			SUBR_CURSOR(ip, MOVE_CURSOR);
1353 	}
1354 }
1355 
1356 static void
1357 itecheckwrap(struct ite_softc *ip)
1358 {
1359 #if 0
1360 	if (++ip->curx == ip->cols) {
1361 		if (ip->auto_wrap) {
1362 			ip->curx = 0;
1363 			clr_attr(ip, ATTR_INV);
1364 			if (++ip->cury >= ip->bottom_margin + 1) {
1365 				ip->cury = ip->bottom_margin;
1366 				SUBR_CURSOR(ip, MOVE_CURSOR);
1367 				SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1368 				ite_clrtoeol(ip);
1369 				return;
1370 			}
1371 		} else
1372 			/* stay there if no autowrap.. */
1373 			ip->curx--;
1374 	}
1375 #else
1376 	if (ip->curx < ip->cols) {
1377 		ip->curx++;
1378 		SUBR_CURSOR(ip, MOVE_CURSOR);
1379 	}
1380 #endif
1381 }
1382 
1383 void
1384 iteputchar(register int c, struct ite_softc *ip)
1385 {
1386 	struct tty *kbd_tty;
1387 	int n, x, y;
1388 	char *cp;
1389 
1390 	if (kbd_ite == NULL)
1391 		kbd_tty = NULL;
1392 	else
1393 		kbd_tty = kbd_ite->tp;
1394 
1395 	if (ip->escape) {
1396 		switch (ip->escape) {
1397 		case ESC:
1398 			switch (c) {
1399 				/*
1400 				 * first 7bit equivalents for the
1401 				 * 8bit control characters
1402 				 */
1403 			case 'D':
1404 				c = IND;
1405 				ip->escape = 0;
1406 				break;
1407 				/*
1408 				 * and fall into the next
1409 				 * switch below (same for all `break')
1410 				 */
1411 			case 'E':
1412 				c = NEL;
1413 				ip->escape = 0;
1414 				break;
1415 			case 'H':
1416 				c = HTS;
1417 				ip->escape = 0;
1418 				break;
1419 			case 'M':
1420 				c = RI;
1421 				ip->escape = 0;
1422 				break;
1423 			case 'N':
1424 				c = SS2;
1425 				ip->escape = 0;
1426 				break;
1427 			case 'O':
1428 				c = SS3;
1429 				ip->escape = 0;
1430 				break;
1431 			case 'P':
1432 				c = DCS;
1433 				ip->escape = 0;
1434 				break;
1435 			case '[':
1436 				c = CSI;
1437 				ip->escape = 0;
1438 				break;
1439 			case '\\':
1440 				c = ST;
1441 				ip->escape = 0;
1442 				break;
1443 			case ']':
1444 				c = OSC;
1445 				ip->escape = 0;
1446 				break;
1447 			case '^':
1448 				c = PM;
1449 				ip->escape = 0;
1450 				break;
1451 			case '_':
1452 				c = APC;
1453 				ip->escape = 0;
1454 				break;
1455 				/* introduces 7/8bit control */
1456 			case ' ':
1457 				/* can be followed by either F or G */
1458 				ip->escape = ' ';
1459 				break;
1460 			/*
1461 			 * a lot of character set selections, not yet
1462 			 * used... 94-character sets:
1463 			 */
1464 			case '(':	/* G0 */
1465 			case ')':	/* G1 */
1466 				ip->escape = c;
1467 				return;
1468 			case '*':	/* G2 */
1469 			case '+':	/* G3 */
1470 			case 'B':	/* ASCII */
1471 			case 'A':	/* ISO latin 1 */
1472 			case '<':	/* user preferred suplemental */
1473 			case '0':	/* dec special graphics */
1474 			/*
1475 			 * 96-character sets:
1476 			 */
1477 			case '-':	/* G1 */
1478 			case '.':	/* G2 */
1479 			case '/':	/* G3 */
1480 			/*
1481 			 * national character sets:
1482 			 */
1483 			case '4':	/* dutch */
1484 			case '5':
1485 			case 'C':	/* finnish */
1486 			case 'R':	/* french */
1487 			case 'Q':	/* french canadian */
1488 			case 'K':	/* german */
1489 			case 'Y':	/* italian */
1490 			case '6':	/* norwegian/danish */
1491 				/*
1492 				 * note: %5 and %6 are not supported (two
1493 				 * chars..)
1494 				 */
1495 				ip->escape = 0;
1496 				/* just ignore for now */
1497 				return;
1498 			/*
1499 			 * locking shift modes (as you might guess, not
1500 			 * yet supported..)
1501 			 */
1502 			case '`':
1503 				ip->GR = ip->G1;
1504 				ip->escape = 0;
1505 				return;
1506 			case 'n':
1507 				ip->GL = ip->G2;
1508 				ip->escape = 0;
1509 				return;
1510 			case '}':
1511 				ip->GR = ip->G2;
1512 				ip->escape = 0;
1513 				return;
1514 			case 'o':
1515 				ip->GL = ip->G3;
1516 				ip->escape = 0;
1517 				return;
1518 			case '|':
1519 				ip->GR = ip->G3;
1520 				ip->escape = 0;
1521 				return;
1522 			case '#':
1523 				/* font width/height control */
1524 				ip->escape = '#';
1525 				return;
1526 			case 'c':
1527 				/* hard terminal reset .. */
1528 				ite_reset(ip);
1529 				SUBR_CURSOR(ip, MOVE_CURSOR);
1530 				ip->escape = 0;
1531 				return;
1532 			case '7':
1533 				ip->save_curx = ip->curx;
1534 				ip->save_cury = ip->cury;
1535 				ip->save_attribute = ip->attribute;
1536 				ip->escape = 0;
1537 				return;
1538 			case '8':
1539 				ip->curx = ip->save_curx;
1540 				ip->cury = ip->save_cury;
1541 				ip->attribute = ip->save_attribute;
1542 				SUBR_CURSOR(ip, MOVE_CURSOR);
1543 				ip->escape = 0;
1544 				return;
1545 			case '=':
1546 				ip->keypad_appmode = 1;
1547 				ip->escape = 0;
1548 				return;
1549 			case '>':
1550 				ip->keypad_appmode = 0;
1551 				ip->escape = 0;
1552 				return;
1553 			case 'Z':	/* request ID */
1554 				/* XXX not clean */
1555 				if (ip->emul_level == EMUL_VT100)
1556 					ite_sendstr("\033[?61;0c");
1557 				else
1558 					ite_sendstr("\033[?63;0c");
1559 				ip->escape = 0;
1560 				return;
1561 			default:
1562 				/*
1563 				 * default catch all for not recognized ESC
1564 				 * sequences
1565 				 */
1566 				ip->escape = 0;
1567 				return;
1568 			}
1569 			break;
1570 		case '(':
1571 		case ')':
1572 			ip->escape = 0;
1573 			return;
1574 		case ' ':
1575 			switch (c) {
1576 			case 'F':
1577 				ip->eightbit_C1 = 0;
1578 				ip->escape = 0;
1579 				return;
1580 			case 'G':
1581 				ip->eightbit_C1 = 1;
1582 				ip->escape = 0;
1583 				return;
1584 			default:
1585 				/* not supported */
1586 				ip->escape = 0;
1587 				return;
1588 			}
1589 			break;
1590 		case '#':
1591 			switch (c) {
1592 			case '5':
1593 				/* single height, single width */
1594 				ip->escape = 0;
1595 				return;
1596 			case '6':
1597 				/* double width, single height */
1598 				ip->escape = 0;
1599 				return;
1600 			case '3':
1601 				/* top half */
1602 				ip->escape = 0;
1603 				return;
1604 			case '4':
1605 				/* bottom half */
1606 				ip->escape = 0;
1607 				return;
1608 			case '8':
1609 				/* screen alignment pattern... */
1610 				alignment_display(ip);
1611 				ip->escape = 0;
1612 				return;
1613 			default:
1614 				ip->escape = 0;
1615 				return;
1616 			}
1617 			break;
1618 		case CSI:
1619 			/* the biggie... */
1620 			switch (c) {
1621 			case '0':
1622 			case '1':
1623 			case '2':
1624 			case '3':
1625 			case '4':
1626 			case '5':
1627 			case '6':
1628 			case '7':
1629 			case '8':
1630 			case '9':
1631 			case ';':
1632 			case '\"':
1633 			case '$':
1634 			case '>':
1635 				if (ip->ap < ip->argbuf + MAX_ARGSIZE)
1636 					*ip->ap++ = c;
1637 				return;
1638 			case BS:
1639 				/*
1640 				 * you wouldn't believe such perversion is
1641 				 * possible? it is.. BS is allowed in between
1642 				 * cursor sequences (at least), according to
1643 				 * vttest..
1644 				 */
1645 				if (--ip->curx < 0)
1646 					ip->curx = 0;
1647 				else
1648 					SUBR_CURSOR(ip, MOVE_CURSOR);
1649 				break;
1650 			case 'p':
1651 				*ip->ap = 0;
1652 				if (!strncmp(ip->argbuf, "61\"", 3))
1653 					ip->emul_level = EMUL_VT100;
1654 				else if (!strncmp(ip->argbuf, "63;1\"", 5)
1655 				    || !strncmp(ip->argbuf, "62;1\"", 5))
1656 					ip->emul_level = EMUL_VT300_7;
1657 				else
1658 					ip->emul_level = EMUL_VT300_8;
1659 				ip->escape = 0;
1660 				return;
1661 			case '?':
1662 				*ip->ap = 0;
1663 				ip->escape = '?';
1664 				ip->ap = ip->argbuf;
1665 				return;
1666 			case 'c':
1667 				*ip->ap = 0;
1668 				if (ip->argbuf[0] == '>') {
1669 					ite_sendstr("\033[>24;0;0;0c");
1670 				} else
1671 					switch (ite_zargnum(ip)) {
1672 					case 0:
1673 						/*
1674 						 * primary DA request, send
1675 						 * primary DA response
1676 						 */
1677 						if (ip->emul_level
1678 						    == EMUL_VT100)
1679 							ite_sendstr(
1680 							    "\033[?1;1c");
1681 						else
1682 							ite_sendstr(
1683 							    "\033[?63;1c");
1684 						break;
1685 					}
1686 				ip->escape = 0;
1687 				return;
1688 			case 'n':
1689 				switch (ite_zargnum(ip)) {
1690 				case 5:
1691 					/* no malfunction */
1692 					ite_sendstr("\033[0n");
1693 					break;
1694 				case 6:
1695 					/* cursor position report */
1696 					sprintf(ip->argbuf, "\033[%d;%dR",
1697 					    ip->cury + 1, ip->curx + 1);
1698 					ite_sendstr(ip->argbuf);
1699 					break;
1700 				}
1701 				ip->escape = 0;
1702 				return;
1703 			case 'x':
1704 				switch (ite_zargnum(ip)) {
1705 				case 0:
1706 					/* Fake some terminal parameters.  */
1707 					ite_sendstr("\033[2;1;1;112;112;1;0x");
1708 					break;
1709 				case 1:
1710 					ite_sendstr("\033[3;1;1;112;112;1;0x");
1711 					break;
1712 				}
1713 				ip->escape = 0;
1714 				return;
1715 			case 'g':
1716 				switch (ite_zargnum(ip)) {
1717 				case 0:
1718 					if (ip->curx < ip->cols)
1719 						ip->tabs[ip->curx] = 0;
1720 					break;
1721 				case 3:
1722 					for (n = 0; n < ip->cols; n++)
1723 						ip->tabs[n] = 0;
1724 					break;
1725 				}
1726 				ip->escape = 0;
1727 				return;
1728 			case 'h':
1729 			case 'l':
1730 				n = ite_zargnum(ip);
1731 				switch (n) {
1732 				case 4:
1733 					/* insert/replace mode */
1734 					ip->imode = (c == 'h');
1735 					break;
1736 				case 20:
1737 					ip->linefeed_newline = (c == 'h');
1738 					break;
1739 				}
1740 				ip->escape = 0;
1741 				return;
1742 			case 'M':
1743 				ite_dnline(ip, ite_argnum(ip));
1744 				ip->escape = 0;
1745 				return;
1746 			case 'L':
1747 				ite_inline(ip, ite_argnum(ip));
1748 				ip->escape = 0;
1749 				return;
1750 			case 'P':
1751 				ite_dnchar(ip, ite_argnum(ip));
1752 				ip->escape = 0;
1753 				return;
1754 			case '@':
1755 				ite_inchar(ip, ite_argnum(ip));
1756 				ip->escape = 0;
1757 				return;
1758 			case 'G':
1759 				/*
1760 				 * this one was *not* in my vt320 manual but in
1761 				 * a vt320 termcap entry.. who is right? It's
1762 				 * supposed to set the horizontal cursor
1763 				 * position.
1764 				 */
1765 				*ip->ap = 0;
1766 				x = atoi(ip->argbuf);
1767 				if (x)
1768 					x--;
1769 				ip->curx = min(x, ip->cols - 1);
1770 				ip->escape = 0;
1771 				SUBR_CURSOR(ip, MOVE_CURSOR);
1772 				clr_attr(ip, ATTR_INV);
1773 				return;
1774 			case 'd':
1775 				/*
1776 				 * same thing here, this one's for setting the
1777 				 * absolute vertical cursor position. Not
1778 				 * documented...
1779 				 */
1780 				*ip->ap = 0;
1781 				y = atoi(ip->argbuf);
1782 				if (y)
1783 					y--;
1784 				if (ip->inside_margins)
1785 					y += ip->top_margin;
1786 				ip->cury = min(y, ip->rows - 1);
1787 				ip->escape = 0;
1788 				snap_cury(ip);
1789 				SUBR_CURSOR(ip, MOVE_CURSOR);
1790 				clr_attr(ip, ATTR_INV);
1791 				return;
1792 			case 'H':
1793 			case 'f':
1794 				*ip->ap = 0;
1795 				y = atoi(ip->argbuf);
1796 				x = 0;
1797 				cp = strchr(ip->argbuf, ';');
1798 				if (cp)
1799 					x = atoi(cp + 1);
1800 				if (x)
1801 					x--;
1802 				if (y)
1803 					y--;
1804 				if (ip->inside_margins)
1805 					y += ip->top_margin;
1806 				ip->cury = min(y, ip->rows - 1);
1807 				ip->curx = min(x, ip->cols - 1);
1808 				ip->escape = 0;
1809 				snap_cury(ip);
1810 				SUBR_CURSOR(ip, MOVE_CURSOR);
1811 				clr_attr(ip, ATTR_INV);
1812 				return;
1813 			case 'A':
1814 				n = ite_argnum(ip);
1815 				n = ip->cury - (n ? n : 1);
1816 				if (n < 0)
1817 					n = 0;
1818 				if (ip->inside_margins)
1819 					n = max(ip->top_margin, n);
1820 				else if (n == ip->top_margin - 1)
1821 					/*
1822 					 * allow scrolling outside region, but
1823 					 * don't scroll out of active region
1824 					 * without explicit CUP
1825 					 */
1826 					n = ip->top_margin;
1827 				ip->cury = n;
1828 				ip->escape = 0;
1829 				SUBR_CURSOR(ip, MOVE_CURSOR);
1830 				clr_attr(ip, ATTR_INV);
1831 				return;
1832 			case 'B':
1833 				n = ite_argnum(ip);
1834 				n = ip->cury + (n ? n : 1);
1835 				n = min(ip->rows - 1, n);
1836 				if (ip->inside_margins)
1837 					n = min(ip->bottom_margin, n);
1838 				else if (n == ip->bottom_margin + 1)
1839 					/*
1840 					 * allow scrolling outside region, but
1841 					 * don't scroll out of active region
1842 					 * without explicit CUP
1843 					 */
1844 					n = ip->bottom_margin;
1845 				ip->cury = n;
1846 				ip->escape = 0;
1847 				SUBR_CURSOR(ip, MOVE_CURSOR);
1848 				clr_attr(ip, ATTR_INV);
1849 				return;
1850 			case 'C':
1851 				n = ite_argnum(ip);
1852 				n = n ? n : 1;
1853 				ip->curx = min(ip->curx + n, ip->cols - 1);
1854 				ip->escape = 0;
1855 				SUBR_CURSOR(ip, MOVE_CURSOR);
1856 				clr_attr(ip, ATTR_INV);
1857 				return;
1858 			case 'D':
1859 				n = ite_argnum(ip);
1860 				n = n ? n : 1;
1861 				n = ip->curx - n;
1862 				ip->curx = n >= 0 ? n : 0;
1863 				ip->escape = 0;
1864 				SUBR_CURSOR(ip, MOVE_CURSOR);
1865 				clr_attr(ip, ATTR_INV);
1866 				return;
1867 			case 'J':
1868 				*ip->ap = 0;
1869 				n = ite_zargnum(ip);
1870 				if (n == 0)
1871 					ite_clrtoeos(ip);
1872 				else if (n == 1)
1873 					ite_clrtobos(ip);
1874 				else if (n == 2)
1875 					ite_clrscreen(ip);
1876 				ip->escape = 0;
1877 				return;
1878 			case 'K':
1879 				n = ite_zargnum(ip);
1880 				if (n == 0)
1881 					ite_clrtoeol(ip);
1882 				else if (n == 1)
1883 					ite_clrtobol(ip);
1884 				else if (n == 2)
1885 					ite_clrline(ip);
1886 				ip->escape = 0;
1887 				return;
1888 			case 'X':
1889 				n = ite_argnum(ip) - 1;
1890 				n = min(n, ip->cols - 1 - ip->curx);
1891 				for (; n >= 0; n--) {
1892 					attrclr(ip, ip->cury, ip->curx + n, 1, 1);
1893 					SUBR_PUTC(ip, ' ', ip->cury, ip->curx + n, ATTR_NOR);
1894 				}
1895 				ip->escape = 0;
1896 				return;
1897 			case '}':
1898 			case '`':
1899 				/* status line control */
1900 				ip->escape = 0;
1901 				return;
1902 			case 'r':
1903 				*ip->ap = 0;
1904 				x = atoi(ip->argbuf);
1905 				x = x ? x : 1;
1906 				y = ip->rows;
1907 				cp = strchr(ip->argbuf, ';');
1908 				if (cp) {
1909 					y = atoi(cp + 1);
1910 					y = y ? y : ip->rows;
1911 				}
1912 				if (y - x < 2) {
1913 					/*
1914 					 * if illegal scrolling region, reset
1915 					 * to defaults
1916 					 */
1917 					x = 1;
1918 					y = ip->rows;
1919 				}
1920 				x--;
1921 				y--;
1922 				ip->top_margin = min(x, ip->rows - 1);
1923 				ip->bottom_margin = min(y, ip->rows - 1);
1924 				if (ip->inside_margins) {
1925 					ip->cury = ip->top_margin;
1926 					ip->curx = 0;
1927 					SUBR_CURSOR(ip, MOVE_CURSOR);
1928 				}
1929 				ip->escape = 0;
1930 				return;
1931 			case 'm':
1932 				/* big attribute setter/resetter */
1933 				{ char *_cp;
1934 				*ip->ap = 0;
1935 				/* kludge to make CSIm work (== CSI0m) */
1936 				if (ip->ap == ip->argbuf)
1937 					ip->ap++;
1938 				for (_cp = ip->argbuf; _cp < ip->ap;) {
1939 					switch (*_cp) {
1940 					case 0:
1941 					case '0':
1942 						clr_attr(ip, ATTR_ALL);
1943 						_cp++;
1944 						break;
1945 
1946 					case '1':
1947 						set_attr(ip, ATTR_BOLD);
1948 						_cp++;
1949 						break;
1950 
1951 					case '2':
1952 						switch (_cp[1]) {
1953 						case '2':
1954 							clr_attr(ip, ATTR_BOLD);
1955 							_cp += 2;
1956 							break;
1957 
1958 						case '4':
1959 							clr_attr(ip, ATTR_UL);
1960 							_cp += 2;
1961 							break;
1962 
1963 						case '5':
1964 							clr_attr(ip, ATTR_BLINK);
1965 							_cp += 2;
1966 							break;
1967 
1968 						case '7':
1969 							clr_attr(ip, ATTR_INV);
1970 							_cp += 2;
1971 							break;
1972 
1973 						default:
1974 							_cp++;
1975 							break;
1976 						}
1977 						break;
1978 
1979 					case '4':
1980 						set_attr(ip, ATTR_UL);
1981 						_cp++;
1982 						break;
1983 
1984 					case '5':
1985 						set_attr(ip, ATTR_BLINK);
1986 						_cp++;
1987 						break;
1988 
1989 					case '7':
1990 						set_attr(ip, ATTR_INV);
1991 						_cp++;
1992 						break;
1993 
1994 					default:
1995 						_cp++;
1996 						break;
1997 					}
1998 				}
1999 				ip->escape = 0;
2000 				return; }
2001 			case 'u':
2002 				/* DECRQTSR */
2003 				ite_sendstr("\033P\033\\");
2004 				ip->escape = 0;
2005 				return;
2006 			default:
2007 				ip->escape = 0;
2008 				return;
2009 			}
2010 			break;
2011 		case '?':	/* CSI ? */
2012 			switch (c) {
2013 			case '0':
2014 			case '1':
2015 			case '2':
2016 			case '3':
2017 			case '4':
2018 			case '5':
2019 			case '6':
2020 			case '7':
2021 			case '8':
2022 			case '9':
2023 			case ';':
2024 			case '\"':
2025 			case '$':
2026 				/*
2027 				 * Don't fill the last character;
2028 				 * it's needed.
2029 				 * XXX yeah, where ??
2030 				 */
2031 				if (ip->ap < ip->argbuf + MAX_ARGSIZE - 1)
2032 					*ip->ap++ = c;
2033 				return;
2034 			case 'n':
2035 				*ip->ap = 0;
2036 				if (ip->ap == &ip->argbuf[2]) {
2037 					if (!strncmp(ip->argbuf, "15", 2))
2038 						/* printer status: no printer */
2039 						ite_sendstr("\033[13n");
2040 
2041 					else if (!strncmp(ip->argbuf, "25", 2))
2042 						/* udk status */
2043 						ite_sendstr("\033[20n");
2044 
2045 					else if (!strncmp(ip->argbuf, "26", 2))
2046 						/* keyboard dialect: US */
2047 						ite_sendstr("\033[27;1n");
2048 				}
2049 				ip->escape = 0;
2050 				return;
2051 			case 'h':
2052 			case 'l':
2053 				n = ite_zargnum(ip);
2054 				switch (n) {
2055 				case 1:
2056 					ip->cursor_appmode = (c == 'h');
2057 					break;
2058 				case 3:
2059 					/* 132/80 columns (132 == 'h') */
2060 					break;
2061 				case 4:	/* smooth scroll */
2062 					break;
2063 				case 5:
2064 					/*
2065 					 * light background (=='h') /dark
2066 					 * background(=='l')
2067 					 */
2068 					break;
2069 				case 6:	/* origin mode */
2070 					ip->inside_margins = (c == 'h');
2071 					ip->curx = 0;
2072 					ip->cury = ip->inside_margins ?
2073 					    ip->top_margin : 0;
2074 					SUBR_CURSOR(ip, MOVE_CURSOR);
2075 					break;
2076 				case 7:	/* auto wraparound */
2077 					ip->auto_wrap = (c == 'h');
2078 					break;
2079 				case 8:	/* keyboard repeat */
2080 					ip->key_repeat = (c == 'h');
2081 					break;
2082 				case 20:	/* newline mode */
2083 					ip->linefeed_newline = (c == 'h');
2084 					break;
2085 				case 25:	/* cursor on/off */
2086 					SUBR_CURSOR(ip, (c == 'h') ?
2087 					    DRAW_CURSOR : ERASE_CURSOR);
2088 					break;
2089 				}
2090 				ip->escape = 0;
2091 				return;
2092 			default:
2093 				ip->escape = 0;
2094 				return;
2095 			}
2096 			break;
2097 		default:
2098 			ip->escape = 0;
2099 			return;
2100 		}
2101 	}
2102 	switch (c) {
2103 	case VT:		/* VT is treated like LF */
2104 	case FF:		/* so is FF */
2105 	case LF:
2106 		/*
2107 		 * cr->crlf distinction is done here, on output, not on input!
2108 		 */
2109 		if (ip->linefeed_newline)
2110 			ite_crlf(ip);
2111 		else
2112 			ite_lf(ip);
2113 		break;
2114 	case CR:
2115 		ite_cr(ip);
2116 		break;
2117 	case BS:
2118 		if (--ip->curx < 0)
2119 			ip->curx = 0;
2120 		else
2121 			SUBR_CURSOR(ip, MOVE_CURSOR);
2122 		break;
2123 	case HT:
2124 		for (n = ip->curx + 1; n < ip->cols; n++) {
2125 			if (ip->tabs[n]) {
2126 				ip->curx = n;
2127 				SUBR_CURSOR(ip, MOVE_CURSOR);
2128 				break;
2129 			}
2130 		}
2131 		break;
2132 	case BEL:
2133 		if (kbd_tty && kbd_ite && kbd_ite->tp == kbd_tty
2134 #ifdef DRACO
2135 		    && !is_draco()
2136 #endif
2137 		    )
2138 			ite_bell();
2139 		break;
2140 	case SO:
2141 		ip->GL = ip->G1;
2142 		break;
2143 	case SI:
2144 		ip->GL = ip->G0;
2145 		break;
2146 	case ENQ:
2147 		/* send answer-back message !! */
2148 		break;
2149 	case CAN:
2150 		ip->escape = 0;	/* cancel any escape sequence in progress */
2151 		break;
2152 	case SUB:
2153 		ip->escape = 0;	/* dito, but see below */
2154 		/* should also display a reverse question mark!! */
2155 		break;
2156 	case ESC:
2157 		ip->escape = ESC;
2158 		break;
2159 	/*
2160 	 * now it gets weird.. 8bit control sequences..
2161 	 */
2162 	case IND:
2163 		/* index: move cursor down, scroll */
2164 		ite_lf(ip);
2165 		break;
2166 	case NEL:
2167 		/* next line. next line, first pos. */
2168 		ite_crlf(ip);
2169 		break;
2170 	case HTS:
2171 		/* set horizontal tab */
2172 		if (ip->curx < ip->cols)
2173 			ip->tabs[ip->curx] = 1;
2174 		break;
2175 	case RI:
2176 		/* reverse index */
2177 		ite_rlf(ip);
2178 		break;
2179 	case SS2:
2180 		/* go into G2 for one character */
2181 		/* not yet supported */
2182 		break;
2183 	case SS3:
2184 		/* go into G3 for one character */
2185 		break;
2186 	case DCS:
2187 		/* device control string introducer */
2188 		ip->escape = DCS;
2189 		ip->ap = ip->argbuf;
2190 		break;
2191 	case CSI:
2192 		/* control sequence introducer */
2193 		ip->escape = CSI;
2194 		ip->ap = ip->argbuf;
2195 		break;
2196 	case ST:
2197 		/* string terminator */
2198 		/* ignore, if not used as terminator */
2199 		break;
2200 	case OSC:
2201 		/*
2202 		 * introduces OS command. Ignore everything
2203 		 * upto ST
2204 		 */
2205 		ip->escape = OSC;
2206 		break;
2207 	case PM:
2208 		/* privacy message, ignore everything upto ST */
2209 		ip->escape = PM;
2210 		break;
2211 	case APC:
2212 		/*
2213 		 * application program command, ignore * everything upto ST
2214 		 */
2215 		ip->escape = APC;
2216 		break;
2217 	default:
2218 		if ((c & 0x7f) < ' ' || c == DEL)
2219 			break;
2220 		if (ip->imode)
2221 			ite_inchar(ip, 1);
2222 		iteprecheckwrap(ip);
2223 #ifdef DO_WEIRD_ATTRIBUTES
2224 		if ((ip->attribute & ATTR_INV) || attrtest(ip, ATTR_INV)) {
2225 			attrset(ip, ATTR_INV);
2226 			SUBR_PUTC(ip, c, ip->cury, ip->curx, ATTR_INV);
2227 		} else
2228 			SUBR_PUTC(ip, c, ip->cury, ip->curx, ATTR_NOR);
2229 #else
2230 		SUBR_PUTC(ip, c, ip->cury, ip->curx, ip->attribute);
2231 #endif
2232 		SUBR_CURSOR(ip, DRAW_CURSOR);
2233 		itecheckwrap(ip);
2234 		break;
2235 	}
2236 }
2237 
2238