xref: /dragonfly/sys/dev/misc/syscons/syscons.c (revision 6e285212)
1 /*-
2  * Copyright (c) 1992-1998 S�ren Schmidt
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  *    without modification, immediately at the beginning of the file.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * $FreeBSD: src/sys/dev/syscons/syscons.c,v 1.336.2.15 2002/10/24 00:35:31 kbyanc Exp $
29  * $DragonFly: src/sys/dev/misc/syscons/syscons.c,v 1.2 2003/06/17 04:28:32 dillon Exp $
30  */
31 
32 #include "splash.h"
33 #include "opt_syscons.h"
34 #include "opt_ddb.h"
35 #ifdef __i386__
36 #include "apm.h"
37 #endif
38 
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/eventhandler.h>
42 #include <sys/reboot.h>
43 #include <sys/conf.h>
44 #include <sys/proc.h>
45 #include <sys/signalvar.h>
46 #include <sys/sysctl.h>
47 #include <sys/tty.h>
48 #include <sys/kernel.h>
49 #include <sys/malloc.h>
50 #include <sys/cons.h>
51 #include <sys/random.h>
52 
53 #include <machine/clock.h>
54 #include <machine/console.h>
55 #include <machine/psl.h>
56 #include <machine/pc/display.h>
57 #ifdef __i386__
58 #include <machine/apm_bios.h>
59 #include <machine/frame.h>
60 #endif
61 
62 #include <dev/kbd/kbdreg.h>
63 #include <dev/fb/fbreg.h>
64 #include <dev/fb/splashreg.h>
65 #include <dev/syscons/syscons.h>
66 
67 #define COLD 0
68 #define WARM 1
69 
70 #define DEFAULT_BLANKTIME	(5*60)		/* 5 minutes */
71 #define MAX_BLANKTIME		(7*24*60*60)	/* 7 days!? */
72 
73 #define KEYCODE_BS		0x0e		/* "<-- Backspace" key, XXX */
74 
75 typedef struct default_attr {
76 	int		std_color;		/* normal hardware color */
77 	int		rev_color;		/* reverse hardware color */
78 } default_attr;
79 
80 static default_attr user_default = {
81     SC_NORM_ATTR,
82     SC_NORM_REV_ATTR,
83 };
84 
85 static default_attr kernel_default = {
86     SC_KERNEL_CONS_ATTR,
87     SC_KERNEL_CONS_REV_ATTR,
88 };
89 
90 static	int		sc_console_unit = -1;
91 static  scr_stat    	*sc_console;
92 static	struct tty	*sc_console_tty;
93 static	void		*kernel_console_ts;
94 
95 static  char        	init_done = COLD;
96 static  char		shutdown_in_progress = FALSE;
97 static	char		sc_malloc = FALSE;
98 
99 static	int		saver_mode = CONS_NO_SAVER; /* LKM/user saver */
100 static	int		run_scrn_saver = FALSE;	/* should run the saver? */
101 static	long        	scrn_blank_time = 0;    /* screen saver timeout value */
102 #if NSPLASH > 0
103 static	int     	scrn_blanked;		/* # of blanked screen */
104 static	int		sticky_splash = FALSE;
105 
106 static	void		none_saver(sc_softc_t *sc, int blank) { }
107 static	void		(*current_saver)(sc_softc_t *, int) = none_saver;
108 #endif
109 
110 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
111 #include "font.h"
112 #endif
113 
114 	d_ioctl_t	*sc_user_ioctl;
115 
116 static	bios_values_t	bios_value;
117 
118 static	int		enable_panic_key;
119 SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
120 	   0, "");
121 
122 #define SC_CONSOLECTL	255
123 
124 #define VIRTUAL_TTY(sc, x) (SC_DEV((sc), (x)) != NULL ?	\
125 	SC_DEV((sc), (x))->si_tty : NULL)
126 #define ISTTYOPEN(tp)	((tp) && ((tp)->t_state & TS_ISOPEN))
127 
128 static	int		debugger;
129 
130 /* prototypes */
131 static int scvidprobe(int unit, int flags, int cons);
132 static int sckbdprobe(int unit, int flags, int cons);
133 static void scmeminit(void *arg);
134 static int scdevtounit(dev_t dev);
135 static kbd_callback_func_t sckbdevent;
136 static int scparam(struct tty *tp, struct termios *t);
137 static void scstart(struct tty *tp);
138 static void scinit(int unit, int flags);
139 #if __i386__
140 static void scterm(int unit, int flags);
141 #endif
142 static void scshutdown(void *arg, int howto);
143 static u_int scgetc(sc_softc_t *sc, u_int flags);
144 #define SCGETC_CN	1
145 #define SCGETC_NONBLOCK	2
146 static int sccngetch(int flags);
147 static void sccnupdate(scr_stat *scp);
148 static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
149 static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
150 static timeout_t scrn_timer;
151 static int and_region(int *s1, int *e1, int s2, int e2);
152 static void scrn_update(scr_stat *scp, int show_cursor);
153 
154 #if NSPLASH > 0
155 static int scsplash_callback(int event, void *arg);
156 static void scsplash_saver(sc_softc_t *sc, int show);
157 static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
158 static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
159 static int set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border);
160 static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
161 static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
162 static int wait_scrn_saver_stop(sc_softc_t *sc);
163 #define scsplash_stick(stick)		(sticky_splash = (stick))
164 #else /* !NSPLASH */
165 #define scsplash_stick(stick)
166 #endif /* NSPLASH */
167 
168 static int do_switch_scr(sc_softc_t *sc, int s);
169 static int vt_proc_alive(scr_stat *scp);
170 static int signal_vt_rel(scr_stat *scp);
171 static int signal_vt_acq(scr_stat *scp);
172 static int finish_vt_rel(scr_stat *scp, int release, int *s);
173 static int finish_vt_acq(scr_stat *scp);
174 static void exchange_scr(sc_softc_t *sc);
175 static void update_cursor_image(scr_stat *scp);
176 static int save_kbd_state(scr_stat *scp);
177 static int update_kbd_state(scr_stat *scp, int state, int mask);
178 static int update_kbd_leds(scr_stat *scp, int which);
179 static timeout_t blink_screen;
180 
181 #define	CDEV_MAJOR	12
182 
183 static cn_probe_t	sccnprobe;
184 static cn_init_t	sccninit;
185 static cn_getc_t	sccngetc;
186 static cn_checkc_t	sccncheckc;
187 static cn_putc_t	sccnputc;
188 static cn_dbctl_t	sccndbctl;
189 static cn_term_t	sccnterm;
190 
191 #if __alpha__
192 void sccnattach(void);
193 #endif
194 
195 CONS_DRIVER(sc, sccnprobe, sccninit, sccnterm, sccngetc, sccncheckc, sccnputc,
196 	    sccndbctl);
197 
198 static	d_open_t	scopen;
199 static	d_close_t	scclose;
200 static	d_read_t	scread;
201 static	d_ioctl_t	scioctl;
202 static	d_mmap_t	scmmap;
203 
204 static struct cdevsw sc_cdevsw = {
205 	/* open */	scopen,
206 	/* close */	scclose,
207 	/* read */	scread,
208 	/* write */	ttywrite,
209 	/* ioctl */	scioctl,
210 	/* poll */	ttypoll,
211 	/* mmap */	scmmap,
212 	/* strategy */	nostrategy,
213 	/* name */	"sc",
214 	/* maj */	CDEV_MAJOR,
215 	/* dump */	nodump,
216 	/* psize */	nopsize,
217 	/* flags */	D_TTY | D_KQFILTER,
218 	/* bmaj */	-1,
219 	/* kqfilter */	ttykqfilter
220 };
221 
222 int
223 sc_probe_unit(int unit, int flags)
224 {
225     if (!scvidprobe(unit, flags, FALSE)) {
226 	if (bootverbose)
227 	    printf("sc%d: no video adapter found.\n", unit);
228 	return ENXIO;
229     }
230 
231     /* syscons will be attached even when there is no keyboard */
232     sckbdprobe(unit, flags, FALSE);
233 
234     return 0;
235 }
236 
237 /* probe video adapters, return TRUE if found */
238 static int
239 scvidprobe(int unit, int flags, int cons)
240 {
241     /*
242      * Access the video adapter driver through the back door!
243      * Video adapter drivers need to be configured before syscons.
244      * However, when syscons is being probed as the low-level console,
245      * they have not been initialized yet.  We force them to initialize
246      * themselves here. XXX
247      */
248     vid_configure(cons ? VIO_PROBE_ONLY : 0);
249 
250     return (vid_find_adapter("*", unit) >= 0);
251 }
252 
253 /* probe the keyboard, return TRUE if found */
254 static int
255 sckbdprobe(int unit, int flags, int cons)
256 {
257     /* access the keyboard driver through the backdoor! */
258     kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
259 
260     return (kbd_find_keyboard("*", unit) >= 0);
261 }
262 
263 static char
264 *adapter_name(video_adapter_t *adp)
265 {
266     static struct {
267 	int type;
268 	char *name[2];
269     } names[] = {
270 	{ KD_MONO,	{ "MDA",	"MDA" } },
271 	{ KD_HERCULES,	{ "Hercules",	"Hercules" } },
272 	{ KD_CGA,	{ "CGA",	"CGA" } },
273 	{ KD_EGA,	{ "EGA",	"EGA (mono)" } },
274 	{ KD_VGA,	{ "VGA",	"VGA (mono)" } },
275 	{ KD_PC98,	{ "PC-98x1",	"PC-98x1" } },
276 	{ KD_TGA,	{ "TGA",	"TGA" } },
277 	{ -1,		{ "Unknown",	"Unknown" } },
278     };
279     int i;
280 
281     for (i = 0; names[i].type != -1; ++i)
282 	if (names[i].type == adp->va_type)
283 	    break;
284     return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
285 }
286 
287 int
288 sc_attach_unit(int unit, int flags)
289 {
290     sc_softc_t *sc;
291     scr_stat *scp;
292 #ifdef SC_PIXEL_MODE
293     video_info_t info;
294 #endif
295     int vc;
296     dev_t dev;
297 
298     flags &= ~SC_KERNEL_CONSOLE;
299 
300     if (sc_console_unit == unit) {
301 	/*
302 	 * If this unit is being used as the system console, we need to
303 	 * adjust some variables and buffers before and after scinit().
304 	 */
305 	/* assert(sc_console != NULL) */
306 	flags |= SC_KERNEL_CONSOLE;
307 	scmeminit(NULL);
308 
309 	scinit(unit, flags);
310 
311 	if (sc_console->tsw->te_size > 0) {
312 	    /* assert(sc_console->ts != NULL); */
313 	    kernel_console_ts = sc_console->ts;
314 	    sc_console->ts = malloc(sc_console->tsw->te_size,
315 				    M_DEVBUF, M_WAITOK);
316 	    bcopy(kernel_console_ts, sc_console->ts, sc_console->tsw->te_size);
317     	    (*sc_console->tsw->te_default_attr)(sc_console,
318 						user_default.std_color,
319 						user_default.rev_color);
320 	}
321     } else {
322 	scinit(unit, flags);
323     }
324 
325     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
326     sc->config = flags;
327     scp = SC_STAT(sc->dev[0]);
328     if (sc_console == NULL)	/* sc_console_unit < 0 */
329 	sc_console = scp;
330 
331 #ifdef SC_PIXEL_MODE
332     if ((sc->config & SC_VESA800X600)
333 	&& ((*vidsw[sc->adapter]->get_info)(sc->adp, M_VESA_800x600, &info) == 0)) {
334 #if NSPLASH > 0
335 	if (sc->flags & SC_SPLASH_SCRN)
336 	    splash_term(sc->adp);
337 #endif
338 	sc_set_graphics_mode(scp, NULL, M_VESA_800x600);
339 	sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
340 	sc->initial_mode = M_VESA_800x600;
341 #if NSPLASH > 0
342 	/* put up the splash again! */
343 	if (sc->flags & SC_SPLASH_SCRN)
344     	    splash_init(sc->adp, scsplash_callback, sc);
345 #endif
346     }
347 #endif /* SC_PIXEL_MODE */
348 
349     /* initialize cursor */
350     if (!ISGRAPHSC(scp))
351     	update_cursor_image(scp);
352 
353     /* get screen update going */
354     scrn_timer(sc);
355 
356     /* set up the keyboard */
357     kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
358     update_kbd_state(scp, scp->status, LOCK_MASK);
359 
360     printf("sc%d: %s <%d virtual consoles, flags=0x%x>\n",
361 	   unit, adapter_name(sc->adp), sc->vtys, sc->config);
362     if (bootverbose) {
363 	printf("sc%d:", unit);
364     	if (sc->adapter >= 0)
365 	    printf(" fb%d", sc->adapter);
366 	if (sc->keyboard >= 0)
367 	    printf(", kbd%d", sc->keyboard);
368 	if (scp->tsw)
369 	    printf(", terminal emulator: %s (%s)",
370 		   scp->tsw->te_name, scp->tsw->te_desc);
371 	printf("\n");
372     }
373 
374     /* register a shutdown callback for the kernel console */
375     if (sc_console_unit == unit)
376 	EVENTHANDLER_REGISTER(shutdown_pre_sync, scshutdown,
377 			      (void *)(uintptr_t)unit, SHUTDOWN_PRI_DEFAULT);
378 
379     for (vc = 0; vc < sc->vtys; vc++) {
380 	dev = make_dev(&sc_cdevsw, vc + unit * MAXCONS,
381 	    UID_ROOT, GID_WHEEL, 0600, "ttyv%r", vc + unit * MAXCONS);
382 	sc->dev[vc] = dev;
383 	/*
384 	 * The first vty already has struct tty and scr_stat initialized
385 	 * in scinit().  The other vtys will have these structs when
386 	 * first opened.
387 	 */
388     }
389 
390     dev = make_dev(&sc_cdevsw, SC_CONSOLECTL,
391 		   UID_ROOT, GID_WHEEL, 0600, "consolectl");
392     dev->si_tty = sc_console_tty = ttymalloc(sc_console_tty);
393     SC_STAT(dev) = sc_console;
394 
395     return 0;
396 }
397 
398 static void
399 scmeminit(void *arg)
400 {
401     if (sc_malloc)
402 	return;
403     sc_malloc = TRUE;
404 
405     /*
406      * As soon as malloc() becomes functional, we had better allocate
407      * various buffers for the kernel console.
408      */
409 
410     if (sc_console_unit < 0)	/* sc_console == NULL */
411 	return;
412 
413     /* copy the temporary buffer to the final buffer */
414     sc_alloc_scr_buffer(sc_console, FALSE, FALSE);
415 
416 #ifndef SC_NO_CUTPASTE
417     sc_alloc_cut_buffer(sc_console, FALSE);
418 #endif
419 
420 #ifndef SC_NO_HISTORY
421     /* initialize history buffer & pointers */
422     sc_alloc_history_buffer(sc_console, 0, 0, FALSE);
423 #endif
424 }
425 
426 /* XXX */
427 SYSINIT(sc_mem, SI_SUB_KMEM, SI_ORDER_ANY, scmeminit, NULL);
428 
429 static int
430 scdevtounit(dev_t dev)
431 {
432     int vty = SC_VTY(dev);
433 
434     if (vty == SC_CONSOLECTL)
435 	return ((sc_console != NULL) ? sc_console->sc->unit : -1);
436     else if ((vty < 0) || (vty >= MAXCONS*sc_max_unit()))
437 	return -1;
438     else
439 	return vty/MAXCONS;
440 }
441 
442 int
443 scopen(dev_t dev, int flag, int mode, struct proc *p)
444 {
445     int unit = scdevtounit(dev);
446     sc_softc_t *sc;
447     struct tty *tp;
448     scr_stat *scp;
449     keyarg_t key;
450     int error;
451 
452     DPRINTF(5, ("scopen: dev:%d,%d, unit:%d, vty:%d\n",
453 		major(dev), minor(dev), unit, SC_VTY(dev)));
454 
455     sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
456     if (sc == NULL)
457 	return ENXIO;
458 
459     tp = dev->si_tty = ttymalloc(dev->si_tty);
460     tp->t_oproc = scstart;
461     tp->t_param = scparam;
462     tp->t_stop = nottystop;
463     tp->t_dev = dev;
464     if (!ISTTYOPEN(tp)) {
465 	ttychars(tp);
466         /* Use the current setting of the <-- key as default VERASE. */
467         /* If the Delete key is preferable, an stty is necessary     */
468 	if (sc->kbd != NULL) {
469 	    key.keynum = KEYCODE_BS;
470 	    kbd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
471             tp->t_cc[VERASE] = key.key.map[0];
472 	}
473 	tp->t_iflag = TTYDEF_IFLAG;
474 	tp->t_oflag = TTYDEF_OFLAG;
475 	tp->t_cflag = TTYDEF_CFLAG;
476 	tp->t_lflag = TTYDEF_LFLAG;
477 	tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
478 	scparam(tp, &tp->t_termios);
479 	(*linesw[tp->t_line].l_modem)(tp, 1);
480     }
481     else
482 	if (tp->t_state & TS_XCLUDE && suser(p))
483 	    return(EBUSY);
484 
485     error = (*linesw[tp->t_line].l_open)(dev, tp);
486 
487     scp = SC_STAT(dev);
488     if (scp == NULL) {
489 	scp = SC_STAT(dev) = alloc_scp(sc, SC_VTY(dev));
490 	if (ISGRAPHSC(scp))
491 	    sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
492     }
493     if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
494 	tp->t_winsize.ws_col = scp->xsize;
495 	tp->t_winsize.ws_row = scp->ysize;
496     }
497 
498     return error;
499 }
500 
501 int
502 scclose(dev_t dev, int flag, int mode, struct proc *p)
503 {
504     struct tty *tp = dev->si_tty;
505     scr_stat *scp;
506     int s;
507 
508     if (SC_VTY(dev) != SC_CONSOLECTL) {
509 	scp = SC_STAT(tp->t_dev);
510 	/* were we in the middle of the VT switching process? */
511 	DPRINTF(5, ("sc%d: scclose(), ", scp->sc->unit));
512 	s = spltty();
513 	if ((scp == scp->sc->cur_scp) && (scp->sc->unit == sc_console_unit))
514 	    cons_unavail = FALSE;
515 	if (finish_vt_rel(scp, TRUE, &s) == 0)	/* force release */
516 	    DPRINTF(5, ("reset WAIT_REL, "));
517 	if (finish_vt_acq(scp) == 0)		/* force acknowledge */
518 	    DPRINTF(5, ("reset WAIT_ACQ, "));
519 #if not_yet_done
520 	if (scp == &main_console) {
521 	    scp->pid = 0;
522 	    scp->proc = NULL;
523 	    scp->smode.mode = VT_AUTO;
524 	}
525 	else {
526 	    sc_vtb_destroy(&scp->vtb);
527 	    sc_vtb_destroy(&scp->scr);
528 	    sc_free_history_buffer(scp, scp->ysize);
529 	    SC_STAT(dev) = NULL;
530 	    free(scp, M_DEVBUF);
531 	}
532 #else
533 	scp->pid = 0;
534 	scp->proc = NULL;
535 	scp->smode.mode = VT_AUTO;
536 #endif
537 	scp->kbd_mode = K_XLATE;
538 	if (scp == scp->sc->cur_scp)
539 	    kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
540 	DPRINTF(5, ("done.\n"));
541     }
542     spltty();
543     (*linesw[tp->t_line].l_close)(tp, flag);
544     ttyclose(tp);
545     spl0();
546     return(0);
547 }
548 
549 int
550 scread(dev_t dev, struct uio *uio, int flag)
551 {
552     sc_touch_scrn_saver();
553     return ttyread(dev, uio, flag);
554 }
555 
556 static int
557 sckbdevent(keyboard_t *thiskbd, int event, void *arg)
558 {
559     sc_softc_t *sc;
560     struct tty *cur_tty;
561     int c;
562     size_t len;
563     u_char *cp;
564 
565     sc = (sc_softc_t *)arg;
566     /* assert(thiskbd == sc->kbd) */
567 
568     switch (event) {
569     case KBDIO_KEYINPUT:
570 	break;
571     case KBDIO_UNLOADING:
572 	sc->kbd = NULL;
573 	sc->keyboard = -1;
574 	kbd_release(thiskbd, (void *)&sc->keyboard);
575 	return 0;
576     default:
577 	return EINVAL;
578     }
579 
580     /*
581      * Loop while there is still input to get from the keyboard.
582      * I don't think this is nessesary, and it doesn't fix
583      * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
584      */
585     while ((c = scgetc(sc, SCGETC_NONBLOCK)) != NOKEY) {
586 
587 	cur_tty = VIRTUAL_TTY(sc, sc->cur_scp->index);
588 	if (!ISTTYOPEN(cur_tty)) {
589 	    cur_tty = sc_console_tty;
590 	    if (!ISTTYOPEN(cur_tty))
591 		continue;
592 	}
593 
594 	if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
595 	    continue;
596 
597 	switch (KEYFLAGS(c)) {
598 	case 0x0000: /* normal key */
599 	    (*linesw[cur_tty->t_line].l_rint)(KEYCHAR(c), cur_tty);
600 	    break;
601 	case FKEY:  /* function key, return string */
602 	    cp = kbd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
603 	    if (cp != NULL) {
604 	    	while (len-- >  0)
605 		    (*linesw[cur_tty->t_line].l_rint)(*cp++, cur_tty);
606 	    }
607 	    break;
608 	case MKEY:  /* meta is active, prepend ESC */
609 	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
610 	    (*linesw[cur_tty->t_line].l_rint)(KEYCHAR(c), cur_tty);
611 	    break;
612 	case BKEY:  /* backtab fixed sequence (esc [ Z) */
613 	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
614 	    (*linesw[cur_tty->t_line].l_rint)('[', cur_tty);
615 	    (*linesw[cur_tty->t_line].l_rint)('Z', cur_tty);
616 	    break;
617 	}
618     }
619 
620     sc->cur_scp->status |= MOUSE_HIDDEN;
621 
622     return 0;
623 }
624 
625 static int
626 scparam(struct tty *tp, struct termios *t)
627 {
628     tp->t_ispeed = t->c_ispeed;
629     tp->t_ospeed = t->c_ospeed;
630     tp->t_cflag = t->c_cflag;
631     return 0;
632 }
633 
634 int
635 scioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
636 {
637     int error;
638     int i;
639     struct tty *tp;
640     sc_softc_t *sc;
641     scr_stat *scp;
642     int s;
643 
644     tp = dev->si_tty;
645 
646     /* If there is a user_ioctl function call that first */
647     if (sc_user_ioctl) {
648 	error = (*sc_user_ioctl)(dev, cmd, data, flag, p);
649 	if (error != ENOIOCTL)
650 	    return error;
651     }
652 
653     error = sc_vid_ioctl(tp, cmd, data, flag, p);
654     if (error != ENOIOCTL)
655 	return error;
656 
657 #ifndef SC_NO_HISTORY
658     error = sc_hist_ioctl(tp, cmd, data, flag, p);
659     if (error != ENOIOCTL)
660 	return error;
661 #endif
662 
663 #ifndef SC_NO_SYSMOUSE
664     error = sc_mouse_ioctl(tp, cmd, data, flag, p);
665     if (error != ENOIOCTL)
666 	return error;
667 #endif
668 
669     scp = SC_STAT(tp->t_dev);
670     /* assert(scp != NULL) */
671     /* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
672     sc = scp->sc;
673 
674     if (scp->tsw) {
675 	error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, flag, p);
676 	if (error != ENOIOCTL)
677 	    return error;
678     }
679 
680     switch (cmd) {  		/* process console hardware related ioctl's */
681 
682     case GIO_ATTR:      	/* get current attributes */
683 	/* this ioctl is not processed here, but in the terminal emulator */
684 	return ENOTTY;
685 
686     case GIO_COLOR:     	/* is this a color console ? */
687 	*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
688 	return 0;
689 
690     case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
691 	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
692             return EINVAL;
693 	s = spltty();
694 	scrn_blank_time = *(int *)data;
695 	run_scrn_saver = (scrn_blank_time != 0);
696 	splx(s);
697 	return 0;
698 
699     case CONS_CURSORTYPE:   	/* set cursor type blink/noblink */
700 	s = spltty();
701 	if (!ISGRAPHSC(sc->cur_scp))
702 	    sc_remove_cursor_image(sc->cur_scp);
703 	if ((*(int*)data) & 0x01)
704 	    sc->flags |= SC_BLINK_CURSOR;
705 	else
706 	    sc->flags &= ~SC_BLINK_CURSOR;
707 	if ((*(int*)data) & 0x02) {
708 	    sc->flags |= SC_CHAR_CURSOR;
709 	} else
710 	    sc->flags &= ~SC_CHAR_CURSOR;
711 	/*
712 	 * The cursor shape is global property; all virtual consoles
713 	 * are affected. Update the cursor in the current console...
714 	 */
715 	if (!ISGRAPHSC(sc->cur_scp)) {
716 	    sc_set_cursor_image(sc->cur_scp);
717 	    sc_draw_cursor_image(sc->cur_scp);
718 	}
719 	splx(s);
720 	return 0;
721 
722     case CONS_BELLTYPE: 	/* set bell type sound/visual */
723 	if ((*(int *)data) & 0x01)
724 	    sc->flags |= SC_VISUAL_BELL;
725 	else
726 	    sc->flags &= ~SC_VISUAL_BELL;
727 	if ((*(int *)data) & 0x02)
728 	    sc->flags |= SC_QUIET_BELL;
729 	else
730 	    sc->flags &= ~SC_QUIET_BELL;
731 	return 0;
732 
733     case CONS_GETINFO:  	/* get current (virtual) console info */
734     {
735 	vid_info_t *ptr = (vid_info_t*)data;
736 	if (ptr->size == sizeof(struct vid_info)) {
737 	    ptr->m_num = sc->cur_scp->index;
738 	    ptr->font_size = scp->font_size;
739 	    ptr->mv_col = scp->xpos;
740 	    ptr->mv_row = scp->ypos;
741 	    ptr->mv_csz = scp->xsize;
742 	    ptr->mv_rsz = scp->ysize;
743 	    /*
744 	     * The following fields are filled by the terminal emulator. XXX
745 	     *
746 	     * ptr->mv_norm.fore
747 	     * ptr->mv_norm.back
748 	     * ptr->mv_rev.fore
749 	     * ptr->mv_rev.back
750 	     */
751 	    ptr->mv_grfc.fore = 0;      /* not supported */
752 	    ptr->mv_grfc.back = 0;      /* not supported */
753 	    ptr->mv_ovscan = scp->border;
754 	    if (scp == sc->cur_scp)
755 		save_kbd_state(scp);
756 	    ptr->mk_keylock = scp->status & LOCK_MASK;
757 	    return 0;
758 	}
759 	return EINVAL;
760     }
761 
762     case CONS_GETVERS:  	/* get version number */
763 	*(int*)data = 0x200;    /* version 2.0 */
764 	return 0;
765 
766     case CONS_IDLE:		/* see if the screen has been idle */
767 	/*
768 	 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
769 	 * the user process may have been writing something on the
770 	 * screen and syscons is not aware of it. Declare the screen
771 	 * is NOT idle if it is in one of these modes. But there is
772 	 * an exception to it; if a screen saver is running in the
773 	 * graphics mode in the current screen, we should say that the
774 	 * screen has been idle.
775 	 */
776 	*(int *)data = (sc->flags & SC_SCRN_IDLE)
777 		       && (!ISGRAPHSC(sc->cur_scp)
778 			   || (sc->cur_scp->status & SAVER_RUNNING));
779 	return 0;
780 
781     case CONS_SAVERMODE:	/* set saver mode */
782 	switch(*(int *)data) {
783 	case CONS_NO_SAVER:
784 	case CONS_USR_SAVER:
785 	    /* if a LKM screen saver is running, stop it first. */
786 	    scsplash_stick(FALSE);
787 	    saver_mode = *(int *)data;
788 	    s = spltty();
789 #if NSPLASH > 0
790 	    if ((error = wait_scrn_saver_stop(NULL))) {
791 		splx(s);
792 		return error;
793 	    }
794 #endif /* NSPLASH */
795 	    run_scrn_saver = TRUE;
796 	    if (saver_mode == CONS_USR_SAVER)
797 		scp->status |= SAVER_RUNNING;
798 	    else
799 		scp->status &= ~SAVER_RUNNING;
800 	    scsplash_stick(TRUE);
801 	    splx(s);
802 	    break;
803 	case CONS_LKM_SAVER:
804 	    s = spltty();
805 	    if ((saver_mode == CONS_USR_SAVER) && (scp->status & SAVER_RUNNING))
806 		scp->status &= ~SAVER_RUNNING;
807 	    saver_mode = *(int *)data;
808 	    splx(s);
809 	    break;
810 	default:
811 	    return EINVAL;
812 	}
813 	return 0;
814 
815     case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
816 	/*
817 	 * Note that this ioctl does not guarantee the screen saver
818 	 * actually starts or stops. It merely attempts to do so...
819 	 */
820 	s = spltty();
821 	run_scrn_saver = (*(int *)data != 0);
822 	if (run_scrn_saver)
823 	    sc->scrn_time_stamp -= scrn_blank_time;
824 	splx(s);
825 	return 0;
826 
827     case CONS_SCRSHOT:		/* get a screen shot */
828     {
829 	scrshot_t *ptr = (scrshot_t*)data;
830 	s = spltty();
831 	if (ISGRAPHSC(scp)) {
832 	    splx(s);
833 	    return EOPNOTSUPP;
834 	}
835 	if (scp->xsize != ptr->xsize || scp->ysize != ptr->ysize) {
836 	    splx(s);
837 	    return EINVAL;
838 	}
839 	copyout ((void*)scp->vtb.vtb_buffer, ptr->buf,
840 		 ptr->xsize * ptr->ysize * sizeof(u_int16_t));
841 	splx(s);
842 	return 0;
843     }
844 
845     case VT_SETMODE:    	/* set screen switcher mode */
846     {
847 	struct vt_mode *mode;
848 
849 	mode = (struct vt_mode *)data;
850 	DPRINTF(5, ("sc%d: VT_SETMODE ", sc->unit));
851 	if (scp->smode.mode == VT_PROCESS) {
852     	    if (scp->proc == pfind(scp->pid) && scp->proc != p) {
853 		DPRINTF(5, ("error EPERM\n"));
854 		return EPERM;
855 	    }
856 	}
857 	s = spltty();
858 	if (mode->mode == VT_AUTO) {
859 	    scp->smode.mode = VT_AUTO;
860 	    scp->proc = NULL;
861 	    scp->pid = 0;
862 	    DPRINTF(5, ("VT_AUTO, "));
863 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
864 		cons_unavail = FALSE;
865 	    /* were we in the middle of the vty switching process? */
866 	    if (finish_vt_rel(scp, TRUE, &s) == 0)
867 		DPRINTF(5, ("reset WAIT_REL, "));
868 	    if (finish_vt_acq(scp) == 0)
869 		DPRINTF(5, ("reset WAIT_ACQ, "));
870 	} else {
871 	    if (!ISSIGVALID(mode->relsig) || !ISSIGVALID(mode->acqsig)
872 		|| !ISSIGVALID(mode->frsig)) {
873 		splx(s);
874 		DPRINTF(5, ("error EINVAL\n"));
875 		return EINVAL;
876 	    }
877 	    DPRINTF(5, ("VT_PROCESS %d, ", p->p_pid));
878 	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
879 	    scp->proc = p;
880 	    scp->pid = scp->proc->p_pid;
881 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
882 		cons_unavail = TRUE;
883 	}
884 	splx(s);
885 	DPRINTF(5, ("\n"));
886 	return 0;
887     }
888 
889     case VT_GETMODE:    	/* get screen switcher mode */
890 	bcopy(&scp->smode, data, sizeof(struct vt_mode));
891 	return 0;
892 
893     case VT_RELDISP:    	/* screen switcher ioctl */
894 	s = spltty();
895 	/*
896 	 * This must be the current vty which is in the VT_PROCESS
897 	 * switching mode...
898 	 */
899 	if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
900 	    splx(s);
901 	    return EINVAL;
902 	}
903 	/* ...and this process is controlling it. */
904 	if (scp->proc != p) {
905 	    splx(s);
906 	    return EPERM;
907 	}
908 	error = EINVAL;
909 	switch(*(int *)data) {
910 	case VT_FALSE:  	/* user refuses to release screen, abort */
911 	    if ((error = finish_vt_rel(scp, FALSE, &s)) == 0)
912 		DPRINTF(5, ("sc%d: VT_FALSE\n", sc->unit));
913 	    break;
914 	case VT_TRUE:   	/* user has released screen, go on */
915 	    if ((error = finish_vt_rel(scp, TRUE, &s)) == 0)
916 		DPRINTF(5, ("sc%d: VT_TRUE\n", sc->unit));
917 	    break;
918 	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
919 	    if ((error = finish_vt_acq(scp)) == 0)
920 		DPRINTF(5, ("sc%d: VT_ACKACQ\n", sc->unit));
921 	    break;
922 	default:
923 	    break;
924 	}
925 	splx(s);
926 	return error;
927 
928     case VT_OPENQRY:    	/* return free virtual console */
929 	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
930 	    tp = VIRTUAL_TTY(sc, i);
931 	    if (!ISTTYOPEN(tp)) {
932 		*(int *)data = i + 1;
933 		return 0;
934 	    }
935 	}
936 	return EINVAL;
937 
938     case VT_ACTIVATE:   	/* switch to screen *data */
939 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
940 	s = spltty();
941 	sc_clean_up(sc->cur_scp);
942 	splx(s);
943 	return sc_switch_scr(sc, i);
944 
945     case VT_WAITACTIVE: 	/* wait for switch to occur */
946 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
947 	if ((i < sc->first_vty) || (i >= sc->first_vty + sc->vtys))
948 	    return EINVAL;
949 	s = spltty();
950 	error = sc_clean_up(sc->cur_scp);
951 	splx(s);
952 	if (error)
953 	    return error;
954 	scp = SC_STAT(SC_DEV(sc, i));
955 	if (scp == scp->sc->cur_scp)
956 	    return 0;
957 	while ((error=tsleep((caddr_t)&scp->smode, PZERO|PCATCH,
958 			     "waitvt", 0)) == ERESTART) ;
959 	return error;
960 
961     case VT_GETACTIVE:		/* get active vty # */
962 	*(int *)data = sc->cur_scp->index + 1;
963 	return 0;
964 
965     case VT_GETINDEX:		/* get this vty # */
966 	*(int *)data = scp->index + 1;
967 	return 0;
968 
969     case VT_LOCKSWITCH:		/* prevent vty switching */
970 	if ((*(int *)data) & 0x01)
971 	    sc->flags |= SC_SCRN_VTYLOCK;
972 	else
973 	    sc->flags &= ~SC_SCRN_VTYLOCK;
974 	return 0;
975 
976     case KDENABIO:      	/* allow io operations */
977 	error = suser(p);
978 	if (error != 0)
979 	    return error;
980 	if (securelevel > 0)
981 	    return EPERM;
982 #ifdef __i386__
983 	p->p_md.md_regs->tf_eflags |= PSL_IOPL;
984 #endif
985 	return 0;
986 
987     case KDDISABIO:     	/* disallow io operations (default) */
988 #ifdef __i386__
989 	p->p_md.md_regs->tf_eflags &= ~PSL_IOPL;
990 #endif
991 	return 0;
992 
993     case KDSKBSTATE:    	/* set keyboard state (locks) */
994 	if (*(int *)data & ~LOCK_MASK)
995 	    return EINVAL;
996 	scp->status &= ~LOCK_MASK;
997 	scp->status |= *(int *)data;
998 	if (scp == sc->cur_scp)
999 	    update_kbd_state(scp, scp->status, LOCK_MASK);
1000 	return 0;
1001 
1002     case KDGKBSTATE:    	/* get keyboard state (locks) */
1003 	if (scp == sc->cur_scp)
1004 	    save_kbd_state(scp);
1005 	*(int *)data = scp->status & LOCK_MASK;
1006 	return 0;
1007 
1008     case KDGETREPEAT:      	/* get keyboard repeat & delay rates */
1009     case KDSETREPEAT:      	/* set keyboard repeat & delay rates (new) */
1010 	error = kbd_ioctl(sc->kbd, cmd, data);
1011 	if (error == ENOIOCTL)
1012 	    error = ENODEV;
1013 	return error;
1014 
1015     case KDSETRAD:      	/* set keyboard repeat & delay rates (old) */
1016 	if (*(int *)data & ~0x7f)
1017 	    return EINVAL;
1018 	error = kbd_ioctl(sc->kbd, cmd, data);
1019 	if (error == ENOIOCTL)
1020 	    error = ENODEV;
1021 	return error;
1022 
1023     case KDSKBMODE:     	/* set keyboard mode */
1024 	switch (*(int *)data) {
1025 	case K_XLATE:   	/* switch to XLT ascii mode */
1026 	case K_RAW: 		/* switch to RAW scancode mode */
1027 	case K_CODE: 		/* switch to CODE mode */
1028 	    scp->kbd_mode = *(int *)data;
1029 	    if (scp == sc->cur_scp)
1030 		kbd_ioctl(sc->kbd, cmd, data);
1031 	    return 0;
1032 	default:
1033 	    return EINVAL;
1034 	}
1035 	/* NOT REACHED */
1036 
1037     case KDGKBMODE:     	/* get keyboard mode */
1038 	*(int *)data = scp->kbd_mode;
1039 	return 0;
1040 
1041     case KDGKBINFO:
1042 	error = kbd_ioctl(sc->kbd, cmd, data);
1043 	if (error == ENOIOCTL)
1044 	    error = ENODEV;
1045 	return error;
1046 
1047     case KDMKTONE:      	/* sound the bell */
1048 	if (*(int*)data)
1049 	    sc_bell(scp, (*(int*)data)&0xffff,
1050 		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1051 	else
1052 	    sc_bell(scp, scp->bell_pitch, scp->bell_duration);
1053 	return 0;
1054 
1055     case KIOCSOUND:     	/* make tone (*data) hz */
1056 	if (scp == sc->cur_scp) {
1057 	    if (*(int *)data)
1058 		return sc_tone(*(int *)data);
1059 	    else
1060 		return sc_tone(0);
1061 	}
1062 	return 0;
1063 
1064     case KDGKBTYPE:     	/* get keyboard type */
1065 	error = kbd_ioctl(sc->kbd, cmd, data);
1066 	if (error == ENOIOCTL) {
1067 	    /* always return something? XXX */
1068 	    *(int *)data = 0;
1069 	}
1070 	return 0;
1071 
1072     case KDSETLED:      	/* set keyboard LED status */
1073 	if (*(int *)data & ~LED_MASK)	/* FIXME: LOCK_MASK? */
1074 	    return EINVAL;
1075 	scp->status &= ~LED_MASK;
1076 	scp->status |= *(int *)data;
1077 	if (scp == sc->cur_scp)
1078 	    update_kbd_leds(scp, scp->status);
1079 	return 0;
1080 
1081     case KDGETLED:      	/* get keyboard LED status */
1082 	if (scp == sc->cur_scp)
1083 	    save_kbd_state(scp);
1084 	*(int *)data = scp->status & LED_MASK;
1085 	return 0;
1086 
1087     case CONS_SETKBD: 		/* set the new keyboard */
1088 	{
1089 	    keyboard_t *newkbd;
1090 
1091 	    s = spltty();
1092 	    newkbd = kbd_get_keyboard(*(int *)data);
1093 	    if (newkbd == NULL) {
1094 		splx(s);
1095 		return EINVAL;
1096 	    }
1097 	    error = 0;
1098 	    if (sc->kbd != newkbd) {
1099 		i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
1100 				 (void *)&sc->keyboard, sckbdevent, sc);
1101 		/* i == newkbd->kb_index */
1102 		if (i >= 0) {
1103 		    if (sc->kbd != NULL) {
1104 			save_kbd_state(sc->cur_scp);
1105 			kbd_release(sc->kbd, (void *)&sc->keyboard);
1106 		    }
1107 		    sc->kbd = kbd_get_keyboard(i); /* sc->kbd == newkbd */
1108 		    sc->keyboard = i;
1109 		    kbd_ioctl(sc->kbd, KDSKBMODE,
1110 			      (caddr_t)&sc->cur_scp->kbd_mode);
1111 		    update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1112 				     LOCK_MASK);
1113 		} else {
1114 		    error = EPERM;	/* XXX */
1115 		}
1116 	    }
1117 	    splx(s);
1118 	    return error;
1119 	}
1120 
1121     case CONS_RELKBD: 		/* release the current keyboard */
1122 	s = spltty();
1123 	error = 0;
1124 	if (sc->kbd != NULL) {
1125 	    save_kbd_state(sc->cur_scp);
1126 	    error = kbd_release(sc->kbd, (void *)&sc->keyboard);
1127 	    if (error == 0) {
1128 		sc->kbd = NULL;
1129 		sc->keyboard = -1;
1130 	    }
1131 	}
1132 	splx(s);
1133 	return error;
1134 
1135     case CONS_GETTERM:		/* get the current terminal emulator info */
1136 	{
1137 	    sc_term_sw_t *sw;
1138 
1139 	    if (((term_info_t *)data)->ti_index == 0) {
1140 		sw = scp->tsw;
1141 	    } else {
1142 		sw = sc_term_match_by_number(((term_info_t *)data)->ti_index);
1143 	    }
1144 	    if (sw != NULL) {
1145 		strncpy(((term_info_t *)data)->ti_name, sw->te_name,
1146 			sizeof(((term_info_t *)data)->ti_name));
1147 		strncpy(((term_info_t *)data)->ti_desc, sw->te_desc,
1148 			sizeof(((term_info_t *)data)->ti_desc));
1149 		((term_info_t *)data)->ti_flags = 0;
1150 		return 0;
1151 	    } else {
1152 		((term_info_t *)data)->ti_name[0] = '\0';
1153 		((term_info_t *)data)->ti_desc[0] = '\0';
1154 		((term_info_t *)data)->ti_flags = 0;
1155 		return EINVAL;
1156 	    }
1157 	}
1158 
1159     case CONS_SETTERM:		/* set the current terminal emulator */
1160 	s = spltty();
1161 	error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
1162 	/* FIXME: what if scp == sc_console! XXX */
1163 	splx(s);
1164 	return error;
1165 
1166     case GIO_SCRNMAP:   	/* get output translation table */
1167 	bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
1168 	return 0;
1169 
1170     case PIO_SCRNMAP:   	/* set output translation table */
1171 	bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
1172 	for (i=0; i<sizeof(sc->scr_map); i++) {
1173 	    sc->scr_rmap[sc->scr_map[i]] = i;
1174 	}
1175 	return 0;
1176 
1177     case GIO_KEYMAP:		/* get keyboard translation table */
1178     case PIO_KEYMAP:		/* set keyboard translation table */
1179     case GIO_DEADKEYMAP:	/* get accent key translation table */
1180     case PIO_DEADKEYMAP:	/* set accent key translation table */
1181     case GETFKEY:		/* get function key string */
1182     case SETFKEY:		/* set function key string */
1183 	error = kbd_ioctl(sc->kbd, cmd, data);
1184 	if (error == ENOIOCTL)
1185 	    error = ENODEV;
1186 	return error;
1187 
1188 #ifndef SC_NO_FONT_LOADING
1189 
1190     case PIO_FONT8x8:   	/* set 8x8 dot font */
1191 	if (!ISFONTAVAIL(sc->adp->va_flags))
1192 	    return ENXIO;
1193 	bcopy(data, sc->font_8, 8*256);
1194 	sc->fonts_loaded |= FONT_8;
1195 	/*
1196 	 * FONT KLUDGE
1197 	 * Always use the font page #0. XXX
1198 	 * Don't load if the current font size is not 8x8.
1199 	 */
1200 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
1201 	    sc_load_font(sc->cur_scp, 0, 8, sc->font_8, 0, 256);
1202 	return 0;
1203 
1204     case GIO_FONT8x8:   	/* get 8x8 dot font */
1205 	if (!ISFONTAVAIL(sc->adp->va_flags))
1206 	    return ENXIO;
1207 	if (sc->fonts_loaded & FONT_8) {
1208 	    bcopy(sc->font_8, data, 8*256);
1209 	    return 0;
1210 	}
1211 	else
1212 	    return ENXIO;
1213 
1214     case PIO_FONT8x14:  	/* set 8x14 dot font */
1215 	if (!ISFONTAVAIL(sc->adp->va_flags))
1216 	    return ENXIO;
1217 	bcopy(data, sc->font_14, 14*256);
1218 	sc->fonts_loaded |= FONT_14;
1219 	/*
1220 	 * FONT KLUDGE
1221 	 * Always use the font page #0. XXX
1222 	 * Don't load if the current font size is not 8x14.
1223 	 */
1224 	if (ISTEXTSC(sc->cur_scp)
1225 	    && (sc->cur_scp->font_size >= 14)
1226 	    && (sc->cur_scp->font_size < 16))
1227 	    sc_load_font(sc->cur_scp, 0, 14, sc->font_14, 0, 256);
1228 	return 0;
1229 
1230     case GIO_FONT8x14:  	/* get 8x14 dot font */
1231 	if (!ISFONTAVAIL(sc->adp->va_flags))
1232 	    return ENXIO;
1233 	if (sc->fonts_loaded & FONT_14) {
1234 	    bcopy(sc->font_14, data, 14*256);
1235 	    return 0;
1236 	}
1237 	else
1238 	    return ENXIO;
1239 
1240     case PIO_FONT8x16:  	/* set 8x16 dot font */
1241 	if (!ISFONTAVAIL(sc->adp->va_flags))
1242 	    return ENXIO;
1243 	bcopy(data, sc->font_16, 16*256);
1244 	sc->fonts_loaded |= FONT_16;
1245 	/*
1246 	 * FONT KLUDGE
1247 	 * Always use the font page #0. XXX
1248 	 * Don't load if the current font size is not 8x16.
1249 	 */
1250 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
1251 	    sc_load_font(sc->cur_scp, 0, 16, sc->font_16, 0, 256);
1252 	return 0;
1253 
1254     case GIO_FONT8x16:  	/* get 8x16 dot font */
1255 	if (!ISFONTAVAIL(sc->adp->va_flags))
1256 	    return ENXIO;
1257 	if (sc->fonts_loaded & FONT_16) {
1258 	    bcopy(sc->font_16, data, 16*256);
1259 	    return 0;
1260 	}
1261 	else
1262 	    return ENXIO;
1263 
1264 #endif /* SC_NO_FONT_LOADING */
1265 
1266     default:
1267 	break;
1268     }
1269 
1270     error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
1271     if (error != ENOIOCTL)
1272 	return(error);
1273     error = ttioctl(tp, cmd, data, flag);
1274     if (error != ENOIOCTL)
1275 	return(error);
1276     return(ENOTTY);
1277 }
1278 
1279 static void
1280 scstart(struct tty *tp)
1281 {
1282     struct clist *rbp;
1283     int s, len;
1284     u_char buf[PCBURST];
1285     scr_stat *scp = SC_STAT(tp->t_dev);
1286 
1287     if (scp->status & SLKED || scp->sc->blink_in_progress)
1288 	return;
1289     s = spltty();
1290     if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
1291 	tp->t_state |= TS_BUSY;
1292 	rbp = &tp->t_outq;
1293 	while (rbp->c_cc) {
1294 	    len = q_to_b(rbp, buf, PCBURST);
1295 	    splx(s);
1296 	    sc_puts(scp, buf, len);
1297 	    s = spltty();
1298 	}
1299 	tp->t_state &= ~TS_BUSY;
1300 	ttwwakeup(tp);
1301     }
1302     splx(s);
1303 }
1304 
1305 static void
1306 sccnprobe(struct consdev *cp)
1307 {
1308 #if __i386__
1309     int unit;
1310     int flags;
1311 
1312     cp->cn_pri = sc_get_cons_priority(&unit, &flags);
1313 
1314     /* a video card is always required */
1315     if (!scvidprobe(unit, flags, TRUE))
1316 	cp->cn_pri = CN_DEAD;
1317 
1318     /* syscons will become console even when there is no keyboard */
1319     sckbdprobe(unit, flags, TRUE);
1320 
1321     if (cp->cn_pri == CN_DEAD)
1322 	return;
1323 
1324     /* initialize required fields */
1325     cp->cn_dev = makedev(CDEV_MAJOR, SC_CONSOLECTL);
1326 #endif /* __i386__ */
1327 
1328 #if __alpha__
1329     /*
1330      * alpha use sccnattach() rather than cnprobe()/cninit()/cnterm()
1331      * interface to install the console.  Always return CN_DEAD from
1332      * here.
1333      */
1334     cp->cn_pri = CN_DEAD;
1335 #endif /* __alpha__ */
1336 }
1337 
1338 static void
1339 sccninit(struct consdev *cp)
1340 {
1341 #if __i386__
1342     int unit;
1343     int flags;
1344 
1345     sc_get_cons_priority(&unit, &flags);
1346     scinit(unit, flags | SC_KERNEL_CONSOLE);
1347     sc_console_unit = unit;
1348     sc_console = SC_STAT(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1349 #endif /* __i386__ */
1350 
1351 #if __alpha__
1352     /* SHOULDN'T REACH HERE */
1353 #endif /* __alpha__ */
1354 }
1355 
1356 static void
1357 sccnterm(struct consdev *cp)
1358 {
1359     /* we are not the kernel console any more, release everything */
1360 
1361     if (sc_console_unit < 0)
1362 	return;			/* shouldn't happen */
1363 
1364 #if __i386__
1365 #if 0 /* XXX */
1366     sc_clear_screen(sc_console);
1367     sccnupdate(sc_console);
1368 #endif
1369     scterm(sc_console_unit, SC_KERNEL_CONSOLE);
1370     sc_console_unit = -1;
1371     sc_console = NULL;
1372 #endif /* __i386__ */
1373 
1374 #if __alpha__
1375     /* do nothing XXX */
1376 #endif /* __alpha__ */
1377 }
1378 
1379 #ifdef __alpha__
1380 
1381 void
1382 sccnattach(void)
1383 {
1384     static struct consdev consdev;
1385     int unit;
1386     int flags;
1387 
1388     bcopy(&sc_consdev, &consdev, sizeof(sc_consdev));
1389     consdev.cn_pri = sc_get_cons_priority(&unit, &flags);
1390 
1391     /* a video card is always required */
1392     if (!scvidprobe(unit, flags, TRUE))
1393 	consdev.cn_pri = CN_DEAD;
1394 
1395     /* alpha doesn't allow the console being without a keyboard... Why? */
1396     if (!sckbdprobe(unit, flags, TRUE))
1397 	consdev.cn_pri = CN_DEAD;
1398 
1399     if (consdev.cn_pri == CN_DEAD)
1400 	return;
1401 
1402     scinit(unit, flags | SC_KERNEL_CONSOLE);
1403     sc_console_unit = unit;
1404     sc_console = SC_STAT(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1405     consdev.cn_dev = makedev(CDEV_MAJOR, 0);
1406     cn_tab = &consdev;
1407 }
1408 
1409 #endif /* __alpha__ */
1410 
1411 static void
1412 sccnputc(dev_t dev, int c)
1413 {
1414     u_char buf[1];
1415     scr_stat *scp = sc_console;
1416     void *save;
1417 #ifndef SC_NO_HISTORY
1418     struct tty *tp;
1419 #endif /* !SC_NO_HISTORY */
1420     int s;
1421 
1422     /* assert(sc_console != NULL) */
1423 
1424 #ifndef SC_NO_HISTORY
1425     if (scp == scp->sc->cur_scp && scp->status & SLKED) {
1426 	scp->status &= ~SLKED;
1427 	update_kbd_state(scp, scp->status, SLKED);
1428 	if (scp->status & BUFFER_SAVED) {
1429 	    if (!sc_hist_restore(scp))
1430 		sc_remove_cutmarking(scp);
1431 	    scp->status &= ~BUFFER_SAVED;
1432 	    scp->status |= CURSOR_ENABLED;
1433 	    sc_draw_cursor_image(scp);
1434 	}
1435 	tp = VIRTUAL_TTY(scp->sc, scp->index);
1436 	if (ISTTYOPEN(tp))
1437 	    scstart(tp);
1438     }
1439 #endif /* !SC_NO_HISTORY */
1440 
1441     save = scp->ts;
1442     if (kernel_console_ts != NULL)
1443 	scp->ts = kernel_console_ts;
1444     buf[0] = c;
1445     sc_puts(scp, buf, 1);
1446     scp->ts = save;
1447 
1448     s = spltty();	/* block sckbdevent and scrn_timer */
1449     sccnupdate(scp);
1450     splx(s);
1451 }
1452 
1453 static int
1454 sccngetc(dev_t dev)
1455 {
1456     return sccngetch(0);
1457 }
1458 
1459 static int
1460 sccncheckc(dev_t dev)
1461 {
1462     return sccngetch(SCGETC_NONBLOCK);
1463 }
1464 
1465 static void
1466 sccndbctl(dev_t dev, int on)
1467 {
1468     /* assert(sc_console_unit >= 0) */
1469     /* try to switch to the kernel console screen */
1470     if (on && debugger == 0) {
1471 	/*
1472 	 * TRY to make sure the screen saver is stopped,
1473 	 * and the screen is updated before switching to
1474 	 * the vty0.
1475 	 */
1476 	scrn_timer(NULL);
1477 	if (!cold
1478 	    && sc_console->sc->cur_scp->smode.mode == VT_AUTO
1479 	    && sc_console->smode.mode == VT_AUTO) {
1480 	    sc_console->sc->cur_scp->status |= MOUSE_HIDDEN;
1481 	    sc_switch_scr(sc_console->sc, sc_console->index);
1482 	}
1483     }
1484     if (on)
1485 	++debugger;
1486     else
1487 	--debugger;
1488 }
1489 
1490 static int
1491 sccngetch(int flags)
1492 {
1493     static struct fkeytab fkey;
1494     static int fkeycp;
1495     scr_stat *scp;
1496     u_char *p;
1497     int cur_mode;
1498     int s = spltty();	/* block sckbdevent and scrn_timer while we poll */
1499     int c;
1500 
1501     /* assert(sc_console != NULL) */
1502 
1503     /*
1504      * Stop the screen saver and update the screen if necessary.
1505      * What if we have been running in the screen saver code... XXX
1506      */
1507     sc_touch_scrn_saver();
1508     scp = sc_console->sc->cur_scp;	/* XXX */
1509     sccnupdate(scp);
1510 
1511     if (fkeycp < fkey.len) {
1512 	splx(s);
1513 	return fkey.str[fkeycp++];
1514     }
1515 
1516     if (scp->sc->kbd == NULL) {
1517 	splx(s);
1518 	return -1;
1519     }
1520 
1521     /*
1522      * Make sure the keyboard is accessible even when the kbd device
1523      * driver is disabled.
1524      */
1525     kbd_enable(scp->sc->kbd);
1526 
1527     /* we shall always use the keyboard in the XLATE mode here */
1528     cur_mode = scp->kbd_mode;
1529     scp->kbd_mode = K_XLATE;
1530     kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1531 
1532     kbd_poll(scp->sc->kbd, TRUE);
1533     c = scgetc(scp->sc, SCGETC_CN | flags);
1534     kbd_poll(scp->sc->kbd, FALSE);
1535 
1536     scp->kbd_mode = cur_mode;
1537     kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1538     kbd_disable(scp->sc->kbd);
1539     splx(s);
1540 
1541     switch (KEYFLAGS(c)) {
1542     case 0:	/* normal char */
1543 	return KEYCHAR(c);
1544     case FKEY:	/* function key */
1545 	p = kbd_get_fkeystr(scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
1546 	fkey.len = fkeycp;
1547 	if ((p != NULL) && (fkey.len > 0)) {
1548 	    bcopy(p, fkey.str, fkey.len);
1549 	    fkeycp = 1;
1550 	    return fkey.str[0];
1551 	}
1552 	return c;	/* XXX */
1553     case NOKEY:
1554     case ERRKEY:
1555     default:
1556 	return -1;
1557     }
1558     /* NOT REACHED */
1559 }
1560 
1561 static void
1562 sccnupdate(scr_stat *scp)
1563 {
1564     /* this is a cut-down version of scrn_timer()... */
1565 
1566     if (scp->sc->font_loading_in_progress || scp->sc->videoio_in_progress)
1567 	return;
1568 
1569     if (debugger > 0 || panicstr || shutdown_in_progress) {
1570 	sc_touch_scrn_saver();
1571     } else if (scp != scp->sc->cur_scp) {
1572 	return;
1573     }
1574 
1575     if (!run_scrn_saver)
1576 	scp->sc->flags &= ~SC_SCRN_IDLE;
1577 #if NSPLASH > 0
1578     if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
1579 	if (scp->sc->flags & SC_SCRN_BLANKED)
1580             stop_scrn_saver(scp->sc, current_saver);
1581 #endif /* NSPLASH */
1582 
1583     if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress
1584 	|| scp->sc->switch_in_progress)
1585 	return;
1586     /*
1587      * FIXME: unlike scrn_timer(), we call scrn_update() from here even
1588      * when write_in_progress is non-zero.  XXX
1589      */
1590 
1591     if (!ISGRAPHSC(scp) && !(scp->sc->flags & SC_SCRN_BLANKED))
1592 	scrn_update(scp, TRUE);
1593 }
1594 
1595 static void
1596 scrn_timer(void *arg)
1597 {
1598     static int kbd_interval = 0;
1599     struct timeval tv;
1600     sc_softc_t *sc;
1601     scr_stat *scp;
1602     int again;
1603     int s;
1604 
1605     again = (arg != NULL);
1606     if (arg != NULL)
1607 	sc = (sc_softc_t *)arg;
1608     else if (sc_console != NULL)
1609 	sc = sc_console->sc;
1610     else
1611 	return;
1612 
1613     /* don't do anything when we are performing some I/O operations */
1614     if (sc->font_loading_in_progress || sc->videoio_in_progress) {
1615 	if (again)
1616 	    timeout(scrn_timer, sc, hz / 10);
1617 	return;
1618     }
1619     s = spltty();
1620 
1621     if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
1622 	/* try to allocate a keyboard automatically */
1623 	if (++kbd_interval >= 25) {
1624 	    sc->keyboard = kbd_allocate("*", -1, (void *)&sc->keyboard,
1625 					sckbdevent, sc);
1626 	    if (sc->keyboard >= 0) {
1627 		sc->kbd = kbd_get_keyboard(sc->keyboard);
1628 		kbd_ioctl(sc->kbd, KDSKBMODE,
1629 			  (caddr_t)&sc->cur_scp->kbd_mode);
1630 		update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1631 				 LOCK_MASK);
1632 	    }
1633 	    kbd_interval = 0;
1634 	}
1635     }
1636 
1637     /* find the vty to update */
1638     scp = sc->cur_scp;
1639 
1640     /* should we stop the screen saver? */
1641     getmicrouptime(&tv);
1642     if (debugger > 0 || panicstr || shutdown_in_progress)
1643 	sc_touch_scrn_saver();
1644     if (run_scrn_saver) {
1645 	if (tv.tv_sec > sc->scrn_time_stamp + scrn_blank_time)
1646 	    sc->flags |= SC_SCRN_IDLE;
1647 	else
1648 	    sc->flags &= ~SC_SCRN_IDLE;
1649     } else {
1650 	sc->scrn_time_stamp = tv.tv_sec;
1651 	sc->flags &= ~SC_SCRN_IDLE;
1652 	if (scrn_blank_time > 0)
1653 	    run_scrn_saver = TRUE;
1654     }
1655 #if NSPLASH > 0
1656     if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
1657 	if (sc->flags & SC_SCRN_BLANKED)
1658             stop_scrn_saver(sc, current_saver);
1659 #endif /* NSPLASH */
1660 
1661     /* should we just return ? */
1662     if (sc->blink_in_progress || sc->switch_in_progress
1663 	|| sc->write_in_progress) {
1664 	if (again)
1665 	    timeout(scrn_timer, sc, hz / 10);
1666 	splx(s);
1667 	return;
1668     }
1669 
1670     /* Update the screen */
1671     scp = sc->cur_scp;		/* cur_scp may have changed... */
1672     if (!ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1673 	scrn_update(scp, TRUE);
1674 
1675 #if NSPLASH > 0
1676     /* should we activate the screen saver? */
1677     if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
1678 	if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
1679 	    (*current_saver)(sc, TRUE);
1680 #endif /* NSPLASH */
1681 
1682     if (again)
1683 	timeout(scrn_timer, sc, hz / 25);
1684     splx(s);
1685 }
1686 
1687 static int
1688 and_region(int *s1, int *e1, int s2, int e2)
1689 {
1690     if (*e1 < s2 || e2 < *s1)
1691 	return FALSE;
1692     *s1 = imax(*s1, s2);
1693     *e1 = imin(*e1, e2);
1694     return TRUE;
1695 }
1696 
1697 static void
1698 scrn_update(scr_stat *scp, int show_cursor)
1699 {
1700     int start;
1701     int end;
1702     int s;
1703     int e;
1704 
1705     /* assert(scp == scp->sc->cur_scp) */
1706 
1707     ++scp->sc->videoio_in_progress;
1708 
1709 #ifndef SC_NO_CUTPASTE
1710     /* remove the previous mouse pointer image if necessary */
1711     if (scp->status & MOUSE_VISIBLE) {
1712 	s = scp->mouse_pos;
1713 	e = scp->mouse_pos + scp->xsize + 1;
1714 	if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN))
1715 	    || and_region(&s, &e, scp->start, scp->end)
1716 	    || ((scp->status & CURSOR_ENABLED) &&
1717 		(scp->cursor_pos != scp->cursor_oldpos) &&
1718 		(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos)
1719 		 || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) {
1720 	    sc_remove_mouse_image(scp);
1721 	    if (scp->end >= scp->xsize*scp->ysize)
1722 		scp->end = scp->xsize*scp->ysize - 1;
1723 	}
1724     }
1725 #endif /* !SC_NO_CUTPASTE */
1726 
1727 #if 1
1728     /* debug: XXX */
1729     if (scp->end >= scp->xsize*scp->ysize) {
1730 	printf("scrn_update(): scp->end %d > size_of_screen!!\n", scp->end);
1731 	scp->end = scp->xsize*scp->ysize - 1;
1732     }
1733     if (scp->start < 0) {
1734 	printf("scrn_update(): scp->start %d < 0\n", scp->start);
1735 	scp->start = 0;
1736     }
1737 #endif
1738 
1739     /* update screen image */
1740     if (scp->start <= scp->end)  {
1741 	if (scp->mouse_cut_end >= 0) {
1742 	    /* there is a marked region for cut & paste */
1743 	    if (scp->mouse_cut_start <= scp->mouse_cut_end) {
1744 		start = scp->mouse_cut_start;
1745 		end = scp->mouse_cut_end;
1746 	    } else {
1747 		start = scp->mouse_cut_end;
1748 		end = scp->mouse_cut_start - 1;
1749 	    }
1750 	    s = start;
1751 	    e = end;
1752 	    /* does the cut-mark region overlap with the update region? */
1753 	    if (and_region(&s, &e, scp->start, scp->end)) {
1754 		(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
1755 		s = 0;
1756 		e = start - 1;
1757 		if (and_region(&s, &e, scp->start, scp->end))
1758 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1759 		s = end + 1;
1760 		e = scp->xsize*scp->ysize - 1;
1761 		if (and_region(&s, &e, scp->start, scp->end))
1762 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1763 	    } else {
1764 		(*scp->rndr->draw)(scp, scp->start,
1765 				   scp->end - scp->start + 1, FALSE);
1766 	    }
1767 	} else {
1768 	    (*scp->rndr->draw)(scp, scp->start,
1769 			       scp->end - scp->start + 1, FALSE);
1770 	}
1771     }
1772 
1773     /* we are not to show the cursor and the mouse pointer... */
1774     if (!show_cursor) {
1775         scp->end = 0;
1776         scp->start = scp->xsize*scp->ysize - 1;
1777 	--scp->sc->videoio_in_progress;
1778 	return;
1779     }
1780 
1781     /* update cursor image */
1782     if (scp->status & CURSOR_ENABLED) {
1783 	s = scp->start;
1784 	e = scp->end;
1785         /* did cursor move since last time ? */
1786         if (scp->cursor_pos != scp->cursor_oldpos) {
1787             /* do we need to remove old cursor image ? */
1788             if (!and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
1789                 sc_remove_cursor_image(scp);
1790             sc_draw_cursor_image(scp);
1791         } else {
1792             if (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos))
1793 		/* cursor didn't move, but has been overwritten */
1794 		sc_draw_cursor_image(scp);
1795 	    else if (scp->sc->flags & SC_BLINK_CURSOR)
1796 		/* if it's a blinking cursor, update it */
1797 		(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
1798 					   sc_inside_cutmark(scp,
1799 					       scp->cursor_pos));
1800         }
1801     }
1802 
1803 #ifndef SC_NO_CUTPASTE
1804     /* update "pseudo" mouse pointer image */
1805     if (scp->sc->flags & SC_MOUSE_ENABLED) {
1806 	if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
1807 	    scp->status &= ~MOUSE_MOVED;
1808 	    sc_draw_mouse_image(scp);
1809 	}
1810     }
1811 #endif /* SC_NO_CUTPASTE */
1812 
1813     scp->end = 0;
1814     scp->start = scp->xsize*scp->ysize - 1;
1815 
1816     --scp->sc->videoio_in_progress;
1817 }
1818 
1819 #if NSPLASH > 0
1820 static int
1821 scsplash_callback(int event, void *arg)
1822 {
1823     sc_softc_t *sc;
1824     int error;
1825 
1826     sc = (sc_softc_t *)arg;
1827 
1828     switch (event) {
1829     case SPLASH_INIT:
1830 	if (add_scrn_saver(scsplash_saver) == 0) {
1831 	    sc->flags &= ~SC_SAVER_FAILED;
1832 	    run_scrn_saver = TRUE;
1833 	    if (cold && !(boothowto & (RB_VERBOSE | RB_CONFIG))) {
1834 		scsplash_stick(TRUE);
1835 		(*current_saver)(sc, TRUE);
1836 	    }
1837 	}
1838 	return 0;
1839 
1840     case SPLASH_TERM:
1841 	if (current_saver == scsplash_saver) {
1842 	    scsplash_stick(FALSE);
1843 	    error = remove_scrn_saver(scsplash_saver);
1844 	    if (error)
1845 		return error;
1846 	}
1847 	return 0;
1848 
1849     default:
1850 	return EINVAL;
1851     }
1852 }
1853 
1854 static void
1855 scsplash_saver(sc_softc_t *sc, int show)
1856 {
1857     static int busy = FALSE;
1858     scr_stat *scp;
1859 
1860     if (busy)
1861 	return;
1862     busy = TRUE;
1863 
1864     scp = sc->cur_scp;
1865     if (show) {
1866 	if (!(sc->flags & SC_SAVER_FAILED)) {
1867 	    if (!(sc->flags & SC_SCRN_BLANKED))
1868 		set_scrn_saver_mode(scp, -1, NULL, 0);
1869 	    switch (splash(sc->adp, TRUE)) {
1870 	    case 0:		/* succeeded */
1871 		break;
1872 	    case EAGAIN:	/* try later */
1873 		restore_scrn_saver_mode(scp, FALSE);
1874 		sc_touch_scrn_saver();		/* XXX */
1875 		break;
1876 	    default:
1877 		sc->flags |= SC_SAVER_FAILED;
1878 		scsplash_stick(FALSE);
1879 		restore_scrn_saver_mode(scp, TRUE);
1880 		printf("scsplash_saver(): failed to put up the image\n");
1881 		break;
1882 	    }
1883 	}
1884     } else if (!sticky_splash) {
1885 	if ((sc->flags & SC_SCRN_BLANKED) && (splash(sc->adp, FALSE) == 0))
1886 	    restore_scrn_saver_mode(scp, TRUE);
1887     }
1888     busy = FALSE;
1889 }
1890 
1891 static int
1892 add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
1893 {
1894 #if 0
1895     int error;
1896 
1897     if (current_saver != none_saver) {
1898 	error = remove_scrn_saver(current_saver);
1899 	if (error)
1900 	    return error;
1901     }
1902 #endif
1903     if (current_saver != none_saver)
1904 	return EBUSY;
1905 
1906     run_scrn_saver = FALSE;
1907     saver_mode = CONS_LKM_SAVER;
1908     current_saver = this_saver;
1909     return 0;
1910 }
1911 
1912 static int
1913 remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
1914 {
1915     if (current_saver != this_saver)
1916 	return EINVAL;
1917 
1918 #if 0
1919     /*
1920      * In order to prevent `current_saver' from being called by
1921      * the timeout routine `scrn_timer()' while we manipulate
1922      * the saver list, we shall set `current_saver' to `none_saver'
1923      * before stopping the current saver, rather than blocking by `splXX()'.
1924      */
1925     current_saver = none_saver;
1926     if (scrn_blanked)
1927         stop_scrn_saver(this_saver);
1928 #endif
1929 
1930     /* unblank all blanked screens */
1931     wait_scrn_saver_stop(NULL);
1932     if (scrn_blanked)
1933 	return EBUSY;
1934 
1935     current_saver = none_saver;
1936     return 0;
1937 }
1938 
1939 static int
1940 set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
1941 {
1942     int s;
1943 
1944     /* assert(scp == scp->sc->cur_scp) */
1945     s = spltty();
1946     if (!ISGRAPHSC(scp))
1947 	sc_remove_cursor_image(scp);
1948     scp->splash_save_mode = scp->mode;
1949     scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
1950     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
1951     scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
1952     scp->sc->flags |= SC_SCRN_BLANKED;
1953     ++scrn_blanked;
1954     splx(s);
1955     if (mode < 0)
1956 	return 0;
1957     scp->mode = mode;
1958     if (set_mode(scp) == 0) {
1959 	if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
1960 	    scp->status |= GRAPHICS_MODE;
1961 #ifndef SC_NO_PALETTE_LOADING
1962 	if (pal != NULL)
1963 	    load_palette(scp->sc->adp, pal);
1964 #endif
1965 	sc_set_border(scp, border);
1966 	return 0;
1967     } else {
1968 	s = spltty();
1969 	scp->mode = scp->splash_save_mode;
1970 	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
1971 	scp->status |= scp->splash_save_status;
1972 	splx(s);
1973 	return 1;
1974     }
1975 }
1976 
1977 static int
1978 restore_scrn_saver_mode(scr_stat *scp, int changemode)
1979 {
1980     int mode;
1981     int status;
1982     int s;
1983 
1984     /* assert(scp == scp->sc->cur_scp) */
1985     s = spltty();
1986     mode = scp->mode;
1987     status = scp->status;
1988     scp->mode = scp->splash_save_mode;
1989     scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
1990     scp->status |= scp->splash_save_status;
1991     scp->sc->flags &= ~SC_SCRN_BLANKED;
1992     if (!changemode) {
1993 	if (!ISGRAPHSC(scp))
1994 	    sc_draw_cursor_image(scp);
1995 	--scrn_blanked;
1996 	splx(s);
1997 	return 0;
1998     }
1999     if (set_mode(scp) == 0) {
2000 #ifndef SC_NO_PALETTE_LOADING
2001 	load_palette(scp->sc->adp, scp->sc->palette);
2002 #endif
2003 	--scrn_blanked;
2004 	splx(s);
2005 	return 0;
2006     } else {
2007 	scp->mode = mode;
2008 	scp->status = status;
2009 	splx(s);
2010 	return 1;
2011     }
2012 }
2013 
2014 static void
2015 stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
2016 {
2017     (*saver)(sc, FALSE);
2018     run_scrn_saver = FALSE;
2019     /* the screen saver may have chosen not to stop after all... */
2020     if (sc->flags & SC_SCRN_BLANKED)
2021 	return;
2022 
2023     mark_all(sc->cur_scp);
2024     if (sc->delayed_next_scr)
2025 	sc_switch_scr(sc, sc->delayed_next_scr - 1);
2026     wakeup((caddr_t)&scrn_blanked);
2027 }
2028 
2029 static int
2030 wait_scrn_saver_stop(sc_softc_t *sc)
2031 {
2032     int error = 0;
2033 
2034     while (scrn_blanked > 0) {
2035 	run_scrn_saver = FALSE;
2036 	if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
2037 	    error = 0;
2038 	    break;
2039 	}
2040 	error = tsleep((caddr_t)&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
2041 	if ((error != 0) && (error != ERESTART))
2042 	    break;
2043     }
2044     run_scrn_saver = FALSE;
2045     return error;
2046 }
2047 #endif /* NSPLASH */
2048 
2049 void
2050 sc_touch_scrn_saver(void)
2051 {
2052     scsplash_stick(FALSE);
2053     run_scrn_saver = FALSE;
2054 }
2055 
2056 int
2057 sc_switch_scr(sc_softc_t *sc, u_int next_scr)
2058 {
2059     scr_stat *cur_scp;
2060     struct tty *tp;
2061     int s;
2062 
2063     DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
2064 
2065     /* prevent switch if previously requested */
2066     if (sc->flags & SC_SCRN_VTYLOCK) {
2067 	    sc_bell(sc->cur_scp, sc->cur_scp->bell_pitch,
2068 		sc->cur_scp->bell_duration);
2069 	    return EPERM;
2070     }
2071 
2072     /* delay switch if the screen is blanked or being updated */
2073     if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress
2074 	|| sc->blink_in_progress || sc->videoio_in_progress) {
2075 	sc->delayed_next_scr = next_scr + 1;
2076 	sc_touch_scrn_saver();
2077 	DPRINTF(5, ("switch delayed\n"));
2078 	return 0;
2079     }
2080 
2081     s = spltty();
2082     cur_scp = sc->cur_scp;
2083 
2084     /* we are in the middle of the vty switching process... */
2085     if (sc->switch_in_progress
2086 	&& (cur_scp->smode.mode == VT_PROCESS)
2087 	&& cur_scp->proc) {
2088 	if (cur_scp->proc != pfind(cur_scp->pid)) {
2089 	    /*
2090 	     * The controlling process has died!!.  Do some clean up.
2091 	     * NOTE:`cur_scp->proc' and `cur_scp->smode.mode'
2092 	     * are not reset here yet; they will be cleared later.
2093 	     */
2094 	    DPRINTF(5, ("cur_scp controlling process %d died, ",
2095 	       cur_scp->pid));
2096 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2097 		/*
2098 		 * Force the previous switch to finish, but return now
2099 		 * with error.
2100 		 */
2101 		DPRINTF(5, ("reset WAIT_REL, "));
2102 		finish_vt_rel(cur_scp, TRUE, &s);
2103 		splx(s);
2104 		DPRINTF(5, ("finishing previous switch\n"));
2105 		return EINVAL;
2106 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2107 		/* let's assume screen switch has been completed. */
2108 		DPRINTF(5, ("reset WAIT_ACQ, "));
2109 		finish_vt_acq(cur_scp);
2110 	    } else {
2111 		/*
2112 	 	 * We are in between screen release and acquisition, and
2113 		 * reached here via scgetc() or scrn_timer() which has
2114 		 * interrupted exchange_scr(). Don't do anything stupid.
2115 		 */
2116 		DPRINTF(5, ("waiting nothing, "));
2117 	    }
2118 	} else {
2119 	    /*
2120 	     * The controlling process is alive, but not responding...
2121 	     * It is either buggy or it may be just taking time.
2122 	     * The following code is a gross kludge to cope with this
2123 	     * problem for which there is no clean solution. XXX
2124 	     */
2125 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2126 		switch (sc->switch_in_progress++) {
2127 		case 1:
2128 		    break;
2129 		case 2:
2130 		    DPRINTF(5, ("sending relsig again, "));
2131 		    signal_vt_rel(cur_scp);
2132 		    break;
2133 		case 3:
2134 		    break;
2135 		case 4:
2136 		default:
2137 		    /*
2138 		     * Act as if the controlling program returned
2139 		     * VT_FALSE.
2140 		     */
2141 		    DPRINTF(5, ("force reset WAIT_REL, "));
2142 		    finish_vt_rel(cur_scp, FALSE, &s);
2143 		    splx(s);
2144 		    DPRINTF(5, ("act as if VT_FALSE was seen\n"));
2145 		    return EINVAL;
2146 		}
2147 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2148 		switch (sc->switch_in_progress++) {
2149 		case 1:
2150 		    break;
2151 		case 2:
2152 		    DPRINTF(5, ("sending acqsig again, "));
2153 		    signal_vt_acq(cur_scp);
2154 		    break;
2155 		case 3:
2156 		    break;
2157 		case 4:
2158 		default:
2159 		     /* clear the flag and finish the previous switch */
2160 		    DPRINTF(5, ("force reset WAIT_ACQ, "));
2161 		    finish_vt_acq(cur_scp);
2162 		    break;
2163 		}
2164 	    }
2165 	}
2166     }
2167 
2168     /*
2169      * Return error if an invalid argument is given, or vty switch
2170      * is still in progress.
2171      */
2172     if ((next_scr < sc->first_vty) || (next_scr >= sc->first_vty + sc->vtys)
2173 	|| sc->switch_in_progress) {
2174 	splx(s);
2175 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2176 	DPRINTF(5, ("error 1\n"));
2177 	return EINVAL;
2178     }
2179 
2180     /*
2181      * Don't allow switching away from the graphics mode vty
2182      * if the switch mode is VT_AUTO, unless the next vty is the same
2183      * as the current or the current vty has been closed (but showing).
2184      */
2185     tp = VIRTUAL_TTY(sc, cur_scp->index);
2186     if ((cur_scp->index != next_scr)
2187 	&& ISTTYOPEN(tp)
2188 	&& (cur_scp->smode.mode == VT_AUTO)
2189 	&& ISGRAPHSC(cur_scp)) {
2190 	splx(s);
2191 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2192 	DPRINTF(5, ("error, graphics mode\n"));
2193 	return EINVAL;
2194     }
2195 
2196     /*
2197      * Is the wanted vty open? Don't allow switching to a closed vty.
2198      * If we are in DDB, don't switch to a vty in the VT_PROCESS mode.
2199      * Note that we always allow the user to switch to the kernel
2200      * console even if it is closed.
2201      */
2202     if ((sc_console == NULL) || (next_scr != sc_console->index)) {
2203 	tp = VIRTUAL_TTY(sc, next_scr);
2204 	if (!ISTTYOPEN(tp)) {
2205 	    splx(s);
2206 	    sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2207 	    DPRINTF(5, ("error 2, requested vty isn't open!\n"));
2208 	    return EINVAL;
2209 	}
2210 	if ((debugger > 0) && (SC_STAT(tp->t_dev)->smode.mode == VT_PROCESS)) {
2211 	    splx(s);
2212 	    DPRINTF(5, ("error 3, requested vty is in the VT_PROCESS mode\n"));
2213 	    return EINVAL;
2214 	}
2215     }
2216 
2217     /* this is the start of vty switching process... */
2218     ++sc->switch_in_progress;
2219     sc->delayed_next_scr = 0;
2220     sc->old_scp = cur_scp;
2221     sc->new_scp = SC_STAT(SC_DEV(sc, next_scr));
2222     if (sc->new_scp == sc->old_scp) {
2223 	sc->switch_in_progress = 0;
2224 	wakeup((caddr_t)&sc->new_scp->smode);
2225 	splx(s);
2226 	DPRINTF(5, ("switch done (new == old)\n"));
2227 	return 0;
2228     }
2229 
2230     /* has controlling process died? */
2231     vt_proc_alive(sc->old_scp);
2232     vt_proc_alive(sc->new_scp);
2233 
2234     /* wait for the controlling process to release the screen, if necessary */
2235     if (signal_vt_rel(sc->old_scp)) {
2236 	splx(s);
2237 	return 0;
2238     }
2239 
2240     /* go set up the new vty screen */
2241     splx(s);
2242     exchange_scr(sc);
2243     s = spltty();
2244 
2245     /* wake up processes waiting for this vty */
2246     wakeup((caddr_t)&sc->cur_scp->smode);
2247 
2248     /* wait for the controlling process to acknowledge, if necessary */
2249     if (signal_vt_acq(sc->cur_scp)) {
2250 	splx(s);
2251 	return 0;
2252     }
2253 
2254     sc->switch_in_progress = 0;
2255     if (sc->unit == sc_console_unit)
2256 	cons_unavail = FALSE;
2257     splx(s);
2258     DPRINTF(5, ("switch done\n"));
2259 
2260     return 0;
2261 }
2262 
2263 static int
2264 do_switch_scr(sc_softc_t *sc, int s)
2265 {
2266     vt_proc_alive(sc->new_scp);
2267 
2268     splx(s);
2269     exchange_scr(sc);
2270     s = spltty();
2271     /* sc->cur_scp == sc->new_scp */
2272     wakeup((caddr_t)&sc->cur_scp->smode);
2273 
2274     /* wait for the controlling process to acknowledge, if necessary */
2275     if (!signal_vt_acq(sc->cur_scp)) {
2276 	sc->switch_in_progress = 0;
2277 	if (sc->unit == sc_console_unit)
2278 	    cons_unavail = FALSE;
2279     }
2280 
2281     return s;
2282 }
2283 
2284 static int
2285 vt_proc_alive(scr_stat *scp)
2286 {
2287     if (scp->proc) {
2288 	if (scp->proc == pfind(scp->pid))
2289 	    return TRUE;
2290 	scp->proc = NULL;
2291 	scp->smode.mode = VT_AUTO;
2292 	DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
2293     }
2294     return FALSE;
2295 }
2296 
2297 static int
2298 signal_vt_rel(scr_stat *scp)
2299 {
2300     if (scp->smode.mode != VT_PROCESS)
2301 	return FALSE;
2302     scp->status |= SWITCH_WAIT_REL;
2303     psignal(scp->proc, scp->smode.relsig);
2304     DPRINTF(5, ("sending relsig to %d\n", scp->pid));
2305     return TRUE;
2306 }
2307 
2308 static int
2309 signal_vt_acq(scr_stat *scp)
2310 {
2311     if (scp->smode.mode != VT_PROCESS)
2312 	return FALSE;
2313     if (scp->sc->unit == sc_console_unit)
2314 	cons_unavail = TRUE;
2315     scp->status |= SWITCH_WAIT_ACQ;
2316     psignal(scp->proc, scp->smode.acqsig);
2317     DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
2318     return TRUE;
2319 }
2320 
2321 static int
2322 finish_vt_rel(scr_stat *scp, int release, int *s)
2323 {
2324     if (scp == scp->sc->old_scp && scp->status & SWITCH_WAIT_REL) {
2325 	scp->status &= ~SWITCH_WAIT_REL;
2326 	if (release)
2327 	    *s = do_switch_scr(scp->sc, *s);
2328 	else
2329 	    scp->sc->switch_in_progress = 0;
2330 	return 0;
2331     }
2332     return EINVAL;
2333 }
2334 
2335 static int
2336 finish_vt_acq(scr_stat *scp)
2337 {
2338     if (scp == scp->sc->new_scp && scp->status & SWITCH_WAIT_ACQ) {
2339 	scp->status &= ~SWITCH_WAIT_ACQ;
2340 	scp->sc->switch_in_progress = 0;
2341 	return 0;
2342     }
2343     return EINVAL;
2344 }
2345 
2346 static void
2347 exchange_scr(sc_softc_t *sc)
2348 {
2349     scr_stat *scp;
2350 
2351     /* save the current state of video and keyboard */
2352     sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
2353     if (!ISGRAPHSC(sc->old_scp))
2354 	sc_remove_cursor_image(sc->old_scp);
2355     if (sc->old_scp->kbd_mode == K_XLATE)
2356 	save_kbd_state(sc->old_scp);
2357 
2358     /* set up the video for the new screen */
2359     scp = sc->cur_scp = sc->new_scp;
2360     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
2361 	set_mode(scp);
2362     else
2363 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2364 		    (void *)sc->adp->va_window, FALSE);
2365     scp->status |= MOUSE_HIDDEN;
2366     sc_move_cursor(scp, scp->xpos, scp->ypos);
2367     if (!ISGRAPHSC(scp))
2368 	sc_set_cursor_image(scp);
2369 #ifndef SC_NO_PALETTE_LOADING
2370     if (ISGRAPHSC(sc->old_scp))
2371 	load_palette(sc->adp, sc->palette);
2372 #endif
2373     sc_set_border(scp, scp->border);
2374 
2375     /* set up the keyboard for the new screen */
2376     if (sc->old_scp->kbd_mode != scp->kbd_mode)
2377 	kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
2378     update_kbd_state(scp, scp->status, LOCK_MASK);
2379 
2380     mark_all(scp);
2381 }
2382 
2383 void
2384 sc_puts(scr_stat *scp, u_char *buf, int len)
2385 {
2386 #if NSPLASH > 0
2387     /* make screensaver happy */
2388     if (!sticky_splash && scp == scp->sc->cur_scp)
2389 	run_scrn_saver = FALSE;
2390 #endif
2391 
2392     if (scp->tsw)
2393 	(*scp->tsw->te_puts)(scp, buf, len);
2394 
2395     if (scp->sc->delayed_next_scr)
2396 	sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
2397 }
2398 
2399 void
2400 sc_draw_cursor_image(scr_stat *scp)
2401 {
2402     /* assert(scp == scp->sc->cur_scp); */
2403     ++scp->sc->videoio_in_progress;
2404     (*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
2405 			      scp->sc->flags & SC_BLINK_CURSOR, TRUE,
2406 			      sc_inside_cutmark(scp, scp->cursor_pos));
2407     scp->cursor_oldpos = scp->cursor_pos;
2408     --scp->sc->videoio_in_progress;
2409 }
2410 
2411 void
2412 sc_remove_cursor_image(scr_stat *scp)
2413 {
2414     /* assert(scp == scp->sc->cur_scp); */
2415     ++scp->sc->videoio_in_progress;
2416     (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
2417 			      scp->sc->flags & SC_BLINK_CURSOR, FALSE,
2418 			      sc_inside_cutmark(scp, scp->cursor_oldpos));
2419     --scp->sc->videoio_in_progress;
2420 }
2421 
2422 static void
2423 update_cursor_image(scr_stat *scp)
2424 {
2425     int blink;
2426 
2427     if (scp->sc->flags & SC_CHAR_CURSOR) {
2428 	scp->cursor_base = imax(0, scp->sc->cursor_base);
2429 	scp->cursor_height = imin(scp->sc->cursor_height, scp->font_size);
2430     } else {
2431 	scp->cursor_base = 0;
2432 	scp->cursor_height = scp->font_size;
2433     }
2434     blink = scp->sc->flags & SC_BLINK_CURSOR;
2435 
2436     /* assert(scp == scp->sc->cur_scp); */
2437     ++scp->sc->videoio_in_progress;
2438     (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos, blink, FALSE,
2439 			      sc_inside_cutmark(scp, scp->cursor_pos));
2440     (*scp->rndr->set_cursor)(scp, scp->cursor_base, scp->cursor_height, blink);
2441     (*scp->rndr->draw_cursor)(scp, scp->cursor_pos, blink, TRUE,
2442 			      sc_inside_cutmark(scp, scp->cursor_pos));
2443     --scp->sc->videoio_in_progress;
2444 }
2445 
2446 void
2447 sc_set_cursor_image(scr_stat *scp)
2448 {
2449     if (scp->sc->flags & SC_CHAR_CURSOR) {
2450 	scp->cursor_base = imax(0, scp->sc->cursor_base);
2451 	scp->cursor_height = imin(scp->sc->cursor_height, scp->font_size);
2452     } else {
2453 	scp->cursor_base = 0;
2454 	scp->cursor_height = scp->font_size;
2455     }
2456 
2457     /* assert(scp == scp->sc->cur_scp); */
2458     ++scp->sc->videoio_in_progress;
2459     (*scp->rndr->set_cursor)(scp, scp->cursor_base, scp->cursor_height,
2460 			     scp->sc->flags & SC_BLINK_CURSOR);
2461     --scp->sc->videoio_in_progress;
2462 }
2463 
2464 static void
2465 scinit(int unit, int flags)
2466 {
2467     /*
2468      * When syscons is being initialized as the kernel console, malloc()
2469      * is not yet functional, because various kernel structures has not been
2470      * fully initialized yet.  Therefore, we need to declare the following
2471      * static buffers for the console.  This is less than ideal,
2472      * but is necessry evil for the time being.  XXX
2473      */
2474     static scr_stat main_console;
2475     static dev_t main_devs[MAXCONS];
2476     static struct tty main_tty;
2477     static u_short sc_buffer[ROW*COL];	/* XXX */
2478 #ifndef SC_NO_FONT_LOADING
2479     static u_char font_8[256*8];
2480     static u_char font_14[256*14];
2481     static u_char font_16[256*16];
2482 #endif
2483 
2484     sc_softc_t *sc;
2485     scr_stat *scp;
2486     video_adapter_t *adp;
2487     int col;
2488     int row;
2489     int i;
2490 
2491     /* one time initialization */
2492     if (init_done == COLD)
2493 	sc_get_bios_values(&bios_value);
2494     init_done = WARM;
2495 
2496     /*
2497      * Allocate resources.  Even if we are being called for the second
2498      * time, we must allocate them again, because they might have
2499      * disappeared...
2500      */
2501     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2502     adp = NULL;
2503     if (sc->adapter >= 0) {
2504 	vid_release(sc->adp, (void *)&sc->adapter);
2505 	adp = sc->adp;
2506 	sc->adp = NULL;
2507     }
2508     if (sc->keyboard >= 0) {
2509 	DPRINTF(5, ("sc%d: releasing kbd%d\n", unit, sc->keyboard));
2510 	i = kbd_release(sc->kbd, (void *)&sc->keyboard);
2511 	DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
2512 	if (sc->kbd != NULL) {
2513 	    DPRINTF(5, ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
2514 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2515 	}
2516 	sc->kbd = NULL;
2517     }
2518     sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
2519     sc->adp = vid_get_adapter(sc->adapter);
2520     /* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
2521     sc->keyboard = kbd_allocate("*", unit, (void *)&sc->keyboard,
2522 				sckbdevent, sc);
2523     DPRINTF(1, ("sc%d: keyboard %d\n", unit, sc->keyboard));
2524     sc->kbd = kbd_get_keyboard(sc->keyboard);
2525     if (sc->kbd != NULL) {
2526 	DPRINTF(1, ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n",
2527 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2528     }
2529 
2530     if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
2531 
2532 	sc->initial_mode = sc->adp->va_initial_mode;
2533 
2534 #ifndef SC_NO_FONT_LOADING
2535 	if (flags & SC_KERNEL_CONSOLE) {
2536 	    sc->font_8 = font_8;
2537 	    sc->font_14 = font_14;
2538 	    sc->font_16 = font_16;
2539 	} else if (sc->font_8 == NULL) {
2540 	    /* assert(sc_malloc) */
2541 	    sc->font_8 = malloc(sizeof(font_8), M_DEVBUF, M_WAITOK);
2542 	    sc->font_14 = malloc(sizeof(font_14), M_DEVBUF, M_WAITOK);
2543 	    sc->font_16 = malloc(sizeof(font_16), M_DEVBUF, M_WAITOK);
2544 	}
2545 #endif
2546 
2547 	/* extract the hardware cursor location and hide the cursor for now */
2548 	(*vidsw[sc->adapter]->read_hw_cursor)(sc->adp, &col, &row);
2549 	(*vidsw[sc->adapter]->set_hw_cursor)(sc->adp, -1, -1);
2550 
2551 	/* set up the first console */
2552 	sc->first_vty = unit*MAXCONS;
2553 	sc->vtys = MAXCONS;		/* XXX: should be configurable */
2554 	if (flags & SC_KERNEL_CONSOLE) {
2555 	    sc->dev = main_devs;
2556 	    sc->dev[0] = makedev(CDEV_MAJOR, unit*MAXCONS);
2557 	    sc->dev[0]->si_tty = &main_tty;
2558 	    ttyregister(&main_tty);
2559 	    scp = &main_console;
2560 	    init_scp(sc, sc->first_vty, scp);
2561 	    sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize, scp->ysize,
2562 			(void *)sc_buffer, FALSE);
2563 	    if (sc_init_emulator(scp, SC_DFLT_TERM))
2564 		sc_init_emulator(scp, "*");
2565 	    (*scp->tsw->te_default_attr)(scp,
2566 					 kernel_default.std_color,
2567 					 kernel_default.rev_color);
2568 	} else {
2569 	    /* assert(sc_malloc) */
2570 	    sc->dev = malloc(sizeof(dev_t)*sc->vtys, M_DEVBUF, M_WAITOK);
2571 	    bzero(sc->dev, sizeof(dev_t)*sc->vtys);
2572 	    sc->dev[0] = makedev(CDEV_MAJOR, unit*MAXCONS);
2573 	    sc->dev[0]->si_tty = ttymalloc(sc->dev[0]->si_tty);
2574 	    scp = alloc_scp(sc, sc->first_vty);
2575 	}
2576 	SC_STAT(sc->dev[0]) = scp;
2577 	sc->cur_scp = scp;
2578 
2579 	/* copy screen to temporary buffer */
2580 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2581 		    (void *)scp->sc->adp->va_window, FALSE);
2582 	if (ISTEXTSC(scp))
2583 	    sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0, scp->xsize*scp->ysize);
2584 
2585 	/* move cursors to the initial positions */
2586 	if (col >= scp->xsize)
2587 	    col = 0;
2588 	if (row >= scp->ysize)
2589 	    row = scp->ysize - 1;
2590 	scp->xpos = col;
2591 	scp->ypos = row;
2592 	scp->cursor_pos = scp->cursor_oldpos = row*scp->xsize + col;
2593 	if (bios_value.cursor_end < scp->font_size)
2594 	    sc->cursor_base = scp->font_size - bios_value.cursor_end - 1;
2595 	else
2596 	    sc->cursor_base = 0;
2597 	i = bios_value.cursor_end - bios_value.cursor_start + 1;
2598 	sc->cursor_height = imin(i, scp->font_size);
2599 #ifndef SC_NO_SYSMOUSE
2600 	sc_mouse_move(scp, scp->xpixel/2, scp->ypixel/2);
2601 #endif
2602 	if (!ISGRAPHSC(scp)) {
2603     	    sc_set_cursor_image(scp);
2604     	    sc_draw_cursor_image(scp);
2605 	}
2606 
2607 	/* save font and palette */
2608 #ifndef SC_NO_FONT_LOADING
2609 	sc->fonts_loaded = 0;
2610 	if (ISFONTAVAIL(sc->adp->va_flags)) {
2611 #ifdef SC_DFLT_FONT
2612 	    bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
2613 	    bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
2614 	    bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
2615 	    sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
2616 	    if (scp->font_size < 14) {
2617 		sc_load_font(scp, 0, 8, sc->font_8, 0, 256);
2618 	    } else if (scp->font_size >= 16) {
2619 		sc_load_font(scp, 0, 16, sc->font_16, 0, 256);
2620 	    } else {
2621 		sc_load_font(scp, 0, 14, sc->font_14, 0, 256);
2622 	    }
2623 #else /* !SC_DFLT_FONT */
2624 	    if (scp->font_size < 14) {
2625 		sc_save_font(scp, 0, 8, sc->font_8, 0, 256);
2626 		sc->fonts_loaded = FONT_8;
2627 	    } else if (scp->font_size >= 16) {
2628 		sc_save_font(scp, 0, 16, sc->font_16, 0, 256);
2629 		sc->fonts_loaded = FONT_16;
2630 	    } else {
2631 		sc_save_font(scp, 0, 14, sc->font_14, 0, 256);
2632 		sc->fonts_loaded = FONT_14;
2633 	    }
2634 #endif /* SC_DFLT_FONT */
2635 	    /* FONT KLUDGE: always use the font page #0. XXX */
2636 	    sc_show_font(scp, 0);
2637 	}
2638 #endif /* !SC_NO_FONT_LOADING */
2639 
2640 #ifndef SC_NO_PALETTE_LOADING
2641 	save_palette(sc->adp, sc->palette);
2642 #endif
2643 
2644 #if NSPLASH > 0
2645 	if (!(sc->flags & SC_SPLASH_SCRN) && (flags & SC_KERNEL_CONSOLE)) {
2646 	    /* we are ready to put up the splash image! */
2647 	    splash_init(sc->adp, scsplash_callback, sc);
2648 	    sc->flags |= SC_SPLASH_SCRN;
2649 	}
2650 #endif /* NSPLASH */
2651     }
2652 
2653     /* the rest is not necessary, if we have done it once */
2654     if (sc->flags & SC_INIT_DONE)
2655 	return;
2656 
2657     /* initialize mapscrn arrays to a one to one map */
2658     for (i = 0; i < sizeof(sc->scr_map); i++)
2659 	sc->scr_map[i] = sc->scr_rmap[i] = i;
2660 
2661     sc->flags |= SC_INIT_DONE;
2662 }
2663 
2664 #if __i386__
2665 static void
2666 scterm(int unit, int flags)
2667 {
2668     sc_softc_t *sc;
2669     scr_stat *scp;
2670 
2671     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2672     if (sc == NULL)
2673 	return;			/* shouldn't happen */
2674 
2675 #if NSPLASH > 0
2676     /* this console is no longer available for the splash screen */
2677     if (sc->flags & SC_SPLASH_SCRN) {
2678 	splash_term(sc->adp);
2679 	sc->flags &= ~SC_SPLASH_SCRN;
2680     }
2681 #endif /* NSPLASH */
2682 
2683 #if 0 /* XXX */
2684     /* move the hardware cursor to the upper-left corner */
2685     (*vidsw[sc->adapter]->set_hw_cursor)(sc->adp, 0, 0);
2686 #endif
2687 
2688     /* release the keyboard and the video card */
2689     if (sc->keyboard >= 0)
2690 	kbd_release(sc->kbd, &sc->keyboard);
2691     if (sc->adapter >= 0)
2692 	vid_release(sc->adp, &sc->adapter);
2693 
2694     /* stop the terminal emulator, if any */
2695     scp = SC_STAT(sc->dev[0]);
2696     if (scp->tsw)
2697 	(*scp->tsw->te_term)(scp, &scp->ts);
2698     if (scp->ts != NULL)
2699 	free(scp->ts, M_DEVBUF);
2700 
2701     /* clear the structure */
2702     if (!(flags & SC_KERNEL_CONSOLE)) {
2703 	/* XXX: We need delete_dev() for this */
2704 	free(sc->dev, M_DEVBUF);
2705 #if 0
2706 	/* XXX: We need a ttyunregister for this */
2707 	free(sc->tty, M_DEVBUF);
2708 #endif
2709 #ifndef SC_NO_FONT_LOADING
2710 	free(sc->font_8, M_DEVBUF);
2711 	free(sc->font_14, M_DEVBUF);
2712 	free(sc->font_16, M_DEVBUF);
2713 #endif
2714 	/* XXX vtb, history */
2715     }
2716     bzero(sc, sizeof(*sc));
2717     sc->keyboard = -1;
2718     sc->adapter = -1;
2719 }
2720 #endif
2721 
2722 static void
2723 scshutdown(void *arg, int howto)
2724 {
2725     /* assert(sc_console != NULL) */
2726 
2727     sc_touch_scrn_saver();
2728     if (!cold && sc_console
2729 	&& sc_console->sc->cur_scp->smode.mode == VT_AUTO
2730 	&& sc_console->smode.mode == VT_AUTO)
2731 	sc_switch_scr(sc_console->sc, sc_console->index);
2732     shutdown_in_progress = TRUE;
2733 }
2734 
2735 int
2736 sc_clean_up(scr_stat *scp)
2737 {
2738 #if NSPLASH > 0
2739     int error;
2740 #endif /* NSPLASH */
2741 
2742     if (scp->sc->flags & SC_SCRN_BLANKED) {
2743 	sc_touch_scrn_saver();
2744 #if NSPLASH > 0
2745 	if ((error = wait_scrn_saver_stop(scp->sc)))
2746 	    return error;
2747 #endif /* NSPLASH */
2748     }
2749     scp->status |= MOUSE_HIDDEN;
2750     sc_remove_mouse_image(scp);
2751     sc_remove_cutmarking(scp);
2752     return 0;
2753 }
2754 
2755 void
2756 sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
2757 {
2758     sc_vtb_t new;
2759     sc_vtb_t old;
2760 
2761     old = scp->vtb;
2762     sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
2763     if (!discard && (old.vtb_flags & VTB_VALID)) {
2764 	/* retain the current cursor position and buffer contants */
2765 	scp->cursor_oldpos = scp->cursor_pos;
2766 	/*
2767 	 * This works only if the old buffer has the same size as or larger
2768 	 * than the new one. XXX
2769 	 */
2770 	sc_vtb_copy(&old, 0, &new, 0, scp->xsize*scp->ysize);
2771 	scp->vtb = new;
2772     } else {
2773 	scp->vtb = new;
2774 	sc_vtb_destroy(&old);
2775     }
2776 
2777 #ifndef SC_NO_SYSMOUSE
2778     /* move the mouse cursor at the center of the screen */
2779     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
2780 #endif
2781 }
2782 
2783 static scr_stat
2784 *alloc_scp(sc_softc_t *sc, int vty)
2785 {
2786     scr_stat *scp;
2787 
2788     /* assert(sc_malloc) */
2789 
2790     scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
2791     init_scp(sc, vty, scp);
2792 
2793     sc_alloc_scr_buffer(scp, TRUE, TRUE);
2794     if (sc_init_emulator(scp, SC_DFLT_TERM))
2795 	sc_init_emulator(scp, "*");
2796 
2797 #ifndef SC_NO_CUTPASTE
2798     sc_alloc_cut_buffer(scp, TRUE);
2799 #endif
2800 
2801 #ifndef SC_NO_HISTORY
2802     sc_alloc_history_buffer(scp, 0, 0, TRUE);
2803 #endif
2804 
2805     return scp;
2806 }
2807 
2808 static void
2809 init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
2810 {
2811     video_info_t info;
2812 
2813     bzero(scp, sizeof(*scp));
2814 
2815     scp->index = vty;
2816     scp->sc = sc;
2817     scp->status = 0;
2818     scp->mode = sc->initial_mode;
2819     (*vidsw[sc->adapter]->get_info)(sc->adp, scp->mode, &info);
2820     if (info.vi_flags & V_INFO_GRAPHICS) {
2821 	scp->status |= GRAPHICS_MODE;
2822 	scp->xpixel = info.vi_width;
2823 	scp->ypixel = info.vi_height;
2824 	scp->xsize = info.vi_width/8;
2825 	scp->ysize = info.vi_height/info.vi_cheight;
2826 	scp->font_size = 0;
2827 	scp->font = NULL;
2828     } else {
2829 	scp->xsize = info.vi_width;
2830 	scp->ysize = info.vi_height;
2831 	scp->xpixel = scp->xsize*8;
2832 	scp->ypixel = scp->ysize*info.vi_cheight;
2833 	if (info.vi_cheight < 14) {
2834 	    scp->font_size = 8;
2835 #ifndef SC_NO_FONT_LOADING
2836 	    scp->font = sc->font_8;
2837 #else
2838 	    scp->font = NULL;
2839 #endif
2840 	} else if (info.vi_cheight >= 16) {
2841 	    scp->font_size = 16;
2842 #ifndef SC_NO_FONT_LOADING
2843 	    scp->font = sc->font_16;
2844 #else
2845 	    scp->font = NULL;
2846 #endif
2847 	} else {
2848 	    scp->font_size = 14;
2849 #ifndef SC_NO_FONT_LOADING
2850 	    scp->font = sc->font_14;
2851 #else
2852 	    scp->font = NULL;
2853 #endif
2854 	}
2855     }
2856     sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
2857     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
2858     scp->xoff = scp->yoff = 0;
2859     scp->xpos = scp->ypos = 0;
2860     scp->start = scp->xsize * scp->ysize - 1;
2861     scp->end = 0;
2862     scp->tsw = NULL;
2863     scp->ts = NULL;
2864     scp->rndr = NULL;
2865     scp->border = BG_BLACK;
2866     scp->cursor_base = sc->cursor_base;
2867     scp->cursor_height = imin(sc->cursor_height, scp->font_size);
2868     scp->mouse_cut_start = scp->xsize*scp->ysize;
2869     scp->mouse_cut_end = -1;
2870     scp->mouse_signal = 0;
2871     scp->mouse_pid = 0;
2872     scp->mouse_proc = NULL;
2873     scp->kbd_mode = K_XLATE;
2874     scp->bell_pitch = bios_value.bell_pitch;
2875     scp->bell_duration = BELL_DURATION;
2876     scp->status |= (bios_value.shift_state & NLKED);
2877     scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
2878     scp->pid = 0;
2879     scp->proc = NULL;
2880     scp->smode.mode = VT_AUTO;
2881     scp->history = NULL;
2882     scp->history_pos = 0;
2883     scp->history_size = 0;
2884 }
2885 
2886 int
2887 sc_init_emulator(scr_stat *scp, char *name)
2888 {
2889     sc_term_sw_t *sw;
2890     sc_rndr_sw_t *rndr;
2891     void *p;
2892     int error;
2893 
2894     if (name == NULL)	/* if no name is given, use the current emulator */
2895 	sw = scp->tsw;
2896     else		/* ...otherwise find the named emulator */
2897 	sw = sc_term_match(name);
2898     if (sw == NULL)
2899 	return EINVAL;
2900 
2901     rndr = NULL;
2902     if (strcmp(sw->te_renderer, "*") != 0) {
2903 	rndr = sc_render_match(scp, sw->te_renderer,
2904 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
2905     }
2906     if (rndr == NULL) {
2907 	rndr = sc_render_match(scp, scp->sc->adp->va_name,
2908 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
2909 	if (rndr == NULL)
2910 	    return ENODEV;
2911     }
2912 
2913     if (sw == scp->tsw) {
2914 	error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
2915 	scp->rndr = rndr;
2916 	sc_clear_screen(scp);
2917 	/* assert(error == 0); */
2918 	return error;
2919     }
2920 
2921     if (sc_malloc && (sw->te_size > 0))
2922 	p = malloc(sw->te_size, M_DEVBUF, M_NOWAIT);
2923     else
2924 	p = NULL;
2925     error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
2926     if (error)
2927 	return error;
2928 
2929     if (scp->tsw)
2930 	(*scp->tsw->te_term)(scp, &scp->ts);
2931     if (scp->ts != NULL)
2932 	free(scp->ts, M_DEVBUF);
2933     scp->tsw = sw;
2934     scp->ts = p;
2935     scp->rndr = rndr;
2936 
2937     /* XXX */
2938     (*sw->te_default_attr)(scp, user_default.std_color, user_default.rev_color);
2939     sc_clear_screen(scp);
2940 
2941     return 0;
2942 }
2943 
2944 /*
2945  * scgetc(flags) - get character from keyboard.
2946  * If flags & SCGETC_CN, then avoid harmful side effects.
2947  * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
2948  * return NOKEY if there is nothing there.
2949  */
2950 static u_int
2951 scgetc(sc_softc_t *sc, u_int flags)
2952 {
2953     scr_stat *scp;
2954 #ifndef SC_NO_HISTORY
2955     struct tty *tp;
2956 #endif
2957     u_int c;
2958     int this_scr;
2959     int f;
2960     int i;
2961 
2962     if (sc->kbd == NULL)
2963 	return NOKEY;
2964 
2965 next_code:
2966 #if 1
2967     /* I don't like this, but... XXX */
2968     if (flags & SCGETC_CN)
2969 	sccnupdate(sc->cur_scp);
2970 #endif
2971     scp = sc->cur_scp;
2972     /* first see if there is something in the keyboard port */
2973     for (;;) {
2974 	c = kbd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
2975 	if (c == ERRKEY) {
2976 	    if (!(flags & SCGETC_CN))
2977 		sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
2978 	} else if (c == NOKEY)
2979 	    return c;
2980 	else
2981 	    break;
2982     }
2983 
2984     /* make screensaver happy */
2985     if (!(c & RELKEY))
2986 	sc_touch_scrn_saver();
2987 
2988 #ifdef __i386__
2989     if (!(flags & SCGETC_CN))
2990 	/* do the /dev/random device a favour */
2991 	add_keyboard_randomness(c);
2992 #endif
2993 
2994     if (scp->kbd_mode != K_XLATE)
2995 	return KEYCHAR(c);
2996 
2997     /* if scroll-lock pressed allow history browsing */
2998     if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
2999 
3000 	scp->status &= ~CURSOR_ENABLED;
3001 	sc_remove_cursor_image(scp);
3002 
3003 #ifndef SC_NO_HISTORY
3004 	if (!(scp->status & BUFFER_SAVED)) {
3005 	    scp->status |= BUFFER_SAVED;
3006 	    sc_hist_save(scp);
3007 	}
3008 	switch (c) {
3009 	/* FIXME: key codes */
3010 	case SPCLKEY | FKEY | F(49):  /* home key */
3011 	    sc_remove_cutmarking(scp);
3012 	    sc_hist_home(scp);
3013 	    goto next_code;
3014 
3015 	case SPCLKEY | FKEY | F(57):  /* end key */
3016 	    sc_remove_cutmarking(scp);
3017 	    sc_hist_end(scp);
3018 	    goto next_code;
3019 
3020 	case SPCLKEY | FKEY | F(50):  /* up arrow key */
3021 	    sc_remove_cutmarking(scp);
3022 	    if (sc_hist_up_line(scp))
3023 		if (!(flags & SCGETC_CN))
3024 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3025 	    goto next_code;
3026 
3027 	case SPCLKEY | FKEY | F(58):  /* down arrow key */
3028 	    sc_remove_cutmarking(scp);
3029 	    if (sc_hist_down_line(scp))
3030 		if (!(flags & SCGETC_CN))
3031 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3032 	    goto next_code;
3033 
3034 	case SPCLKEY | FKEY | F(51):  /* page up key */
3035 	    sc_remove_cutmarking(scp);
3036 	    for (i=0; i<scp->ysize; i++)
3037 	    if (sc_hist_up_line(scp)) {
3038 		if (!(flags & SCGETC_CN))
3039 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3040 		break;
3041 	    }
3042 	    goto next_code;
3043 
3044 	case SPCLKEY | FKEY | F(59):  /* page down key */
3045 	    sc_remove_cutmarking(scp);
3046 	    for (i=0; i<scp->ysize; i++)
3047 	    if (sc_hist_down_line(scp)) {
3048 		if (!(flags & SCGETC_CN))
3049 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3050 		break;
3051 	    }
3052 	    goto next_code;
3053 	}
3054 #endif /* SC_NO_HISTORY */
3055     }
3056 
3057     /*
3058      * Process and consume special keys here.  Return a plain char code
3059      * or a char code with the META flag or a function key code.
3060      */
3061     if (c & RELKEY) {
3062 	/* key released */
3063 	/* goto next_code */
3064     } else {
3065 	/* key pressed */
3066 	if (c & SPCLKEY) {
3067 	    c &= ~SPCLKEY;
3068 	    switch (KEYCHAR(c)) {
3069 	    /* LOCKING KEYS */
3070 	    case NLK: case CLK: case ALK:
3071 		break;
3072 	    case SLK:
3073 		kbd_ioctl(sc->kbd, KDGKBSTATE, (caddr_t)&f);
3074 		if (f & SLKED) {
3075 		    scp->status |= SLKED;
3076 		} else {
3077 		    if (scp->status & SLKED) {
3078 			scp->status &= ~SLKED;
3079 #ifndef SC_NO_HISTORY
3080 			if (scp->status & BUFFER_SAVED) {
3081 			    if (!sc_hist_restore(scp))
3082 				sc_remove_cutmarking(scp);
3083 			    scp->status &= ~BUFFER_SAVED;
3084 			    scp->status |= CURSOR_ENABLED;
3085 			    sc_draw_cursor_image(scp);
3086 			}
3087 			tp = VIRTUAL_TTY(sc, scp->index);
3088 			if (ISTTYOPEN(tp))
3089 			    scstart(tp);
3090 #endif
3091 		    }
3092 		}
3093 		break;
3094 
3095 	    /* NON-LOCKING KEYS */
3096 	    case NOP:
3097 	    case LSH:  case RSH:  case LCTR: case RCTR:
3098 	    case LALT: case RALT: case ASH:  case META:
3099 		break;
3100 
3101 	    case BTAB:
3102 		if (!(sc->flags & SC_SCRN_BLANKED))
3103 		    return c;
3104 		break;
3105 
3106 	    case SPSC:
3107 #if NSPLASH > 0
3108 		/* force activatation/deactivation of the screen saver */
3109 		if (!(sc->flags & SC_SCRN_BLANKED)) {
3110 		    run_scrn_saver = TRUE;
3111 		    sc->scrn_time_stamp -= scrn_blank_time;
3112 		}
3113 		if (cold) {
3114 		    /*
3115 		     * While devices are being probed, the screen saver need
3116 		     * to be invoked explictly. XXX
3117 		     */
3118 		    if (sc->flags & SC_SCRN_BLANKED) {
3119 			scsplash_stick(FALSE);
3120 			stop_scrn_saver(sc, current_saver);
3121 		    } else {
3122 			if (!ISGRAPHSC(scp)) {
3123 			    scsplash_stick(TRUE);
3124 			    (*current_saver)(sc, TRUE);
3125 			}
3126 		    }
3127 		}
3128 #endif /* NSPLASH */
3129 		break;
3130 
3131 	    case RBT:
3132 #ifndef SC_DISABLE_REBOOT
3133 		shutdown_nice(0);
3134 #endif
3135 		break;
3136 
3137 	    case HALT:
3138 #ifndef SC_DISABLE_REBOOT
3139 		shutdown_nice(RB_HALT);
3140 #endif
3141 		break;
3142 
3143 	    case PDWN:
3144 #ifndef SC_DISABLE_REBOOT
3145 		shutdown_nice(RB_HALT|RB_POWEROFF);
3146 #endif
3147 		break;
3148 
3149 #if NAPM > 0
3150 	    case SUSP:
3151 		apm_suspend(PMST_SUSPEND);
3152 		break;
3153 	    case STBY:
3154 		apm_suspend(PMST_STANDBY);
3155 		break;
3156 #else
3157 	    case SUSP:
3158 	    case STBY:
3159 		break;
3160 #endif
3161 
3162 	    case DBG:
3163 #ifndef SC_DISABLE_DDBKEY
3164 #ifdef DDB
3165 		Debugger("manual escape to debugger");
3166 #else
3167 		printf("No debugger in kernel\n");
3168 #endif
3169 #else /* SC_DISABLE_DDBKEY */
3170 		/* do nothing */
3171 #endif /* SC_DISABLE_DDBKEY */
3172 		break;
3173 
3174 	    case PNC:
3175 		if (enable_panic_key)
3176 			panic("Forced by the panic key");
3177 		break;
3178 
3179 	    case NEXT:
3180 		this_scr = scp->index;
3181 		for (i = (this_scr - sc->first_vty + 1)%sc->vtys;
3182 			sc->first_vty + i != this_scr;
3183 			i = (i + 1)%sc->vtys) {
3184 		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
3185 		    if (ISTTYOPEN(tp)) {
3186 			sc_switch_scr(scp->sc, sc->first_vty + i);
3187 			break;
3188 		    }
3189 		}
3190 		break;
3191 
3192 	    case PREV:
3193 		this_scr = scp->index;
3194 		for (i = (this_scr - sc->first_vty + sc->vtys - 1)%sc->vtys;
3195 			sc->first_vty + i != this_scr;
3196 			i = (i + sc->vtys - 1)%sc->vtys) {
3197 		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
3198 		    if (ISTTYOPEN(tp)) {
3199 			sc_switch_scr(scp->sc, sc->first_vty + i);
3200 			break;
3201 		    }
3202 		}
3203 		break;
3204 
3205 	    default:
3206 		if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
3207 		    sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
3208 		    break;
3209 		}
3210 		/* assert(c & FKEY) */
3211 		if (!(sc->flags & SC_SCRN_BLANKED))
3212 		    return c;
3213 		break;
3214 	    }
3215 	    /* goto next_code */
3216 	} else {
3217 	    /* regular keys (maybe MKEY is set) */
3218 	    if (!(sc->flags & SC_SCRN_BLANKED))
3219 		return c;
3220 	}
3221     }
3222 
3223     goto next_code;
3224 }
3225 
3226 int
3227 scmmap(dev_t dev, vm_offset_t offset, int nprot)
3228 {
3229     scr_stat *scp;
3230 
3231     scp = SC_STAT(dev);
3232     if (scp != scp->sc->cur_scp)
3233 	return -1;
3234     return (*vidsw[scp->sc->adapter]->mmap)(scp->sc->adp, offset, nprot);
3235 }
3236 
3237 static int
3238 save_kbd_state(scr_stat *scp)
3239 {
3240     int state;
3241     int error;
3242 
3243     error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3244     if (error == ENOIOCTL)
3245 	error = ENODEV;
3246     if (error == 0) {
3247 	scp->status &= ~LOCK_MASK;
3248 	scp->status |= state;
3249     }
3250     return error;
3251 }
3252 
3253 static int
3254 update_kbd_state(scr_stat *scp, int new_bits, int mask)
3255 {
3256     int state;
3257     int error;
3258 
3259     if (mask != LOCK_MASK) {
3260 	error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3261 	if (error == ENOIOCTL)
3262 	    error = ENODEV;
3263 	if (error)
3264 	    return error;
3265 	state &= ~mask;
3266 	state |= new_bits & mask;
3267     } else {
3268 	state = new_bits & LOCK_MASK;
3269     }
3270     error = kbd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
3271     if (error == ENOIOCTL)
3272 	error = ENODEV;
3273     return error;
3274 }
3275 
3276 static int
3277 update_kbd_leds(scr_stat *scp, int which)
3278 {
3279     int error;
3280 
3281     which &= LOCK_MASK;
3282     error = kbd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
3283     if (error == ENOIOCTL)
3284 	error = ENODEV;
3285     return error;
3286 }
3287 
3288 int
3289 set_mode(scr_stat *scp)
3290 {
3291     video_info_t info;
3292 
3293     /* reject unsupported mode */
3294     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, scp->mode, &info))
3295 	return 1;
3296 
3297     /* if this vty is not currently showing, do nothing */
3298     if (scp != scp->sc->cur_scp)
3299 	return 0;
3300 
3301     /* setup video hardware for the given mode */
3302     (*vidsw[scp->sc->adapter]->set_mode)(scp->sc->adp, scp->mode);
3303     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3304 		(void *)scp->sc->adp->va_window, FALSE);
3305 
3306 #ifndef SC_NO_FONT_LOADING
3307     /* load appropriate font */
3308     if (!(scp->status & GRAPHICS_MODE)) {
3309 	if (!(scp->status & PIXEL_MODE) && ISFONTAVAIL(scp->sc->adp->va_flags)) {
3310 	    if (scp->font_size < 14) {
3311 		if (scp->sc->fonts_loaded & FONT_8)
3312 		    sc_load_font(scp, 0, 8, scp->sc->font_8, 0, 256);
3313 	    } else if (scp->font_size >= 16) {
3314 		if (scp->sc->fonts_loaded & FONT_16)
3315 		    sc_load_font(scp, 0, 16, scp->sc->font_16, 0, 256);
3316 	    } else {
3317 		if (scp->sc->fonts_loaded & FONT_14)
3318 		    sc_load_font(scp, 0, 14, scp->sc->font_14, 0, 256);
3319 	    }
3320 	    /*
3321 	     * FONT KLUDGE:
3322 	     * This is an interim kludge to display correct font.
3323 	     * Always use the font page #0 on the video plane 2.
3324 	     * Somehow we cannot show the font in other font pages on
3325 	     * some video cards... XXX
3326 	     */
3327 	    sc_show_font(scp, 0);
3328 	}
3329 	mark_all(scp);
3330     }
3331 #endif /* !SC_NO_FONT_LOADING */
3332 
3333     sc_set_border(scp, scp->border);
3334     sc_set_cursor_image(scp);
3335 
3336     return 0;
3337 }
3338 
3339 void
3340 sc_set_border(scr_stat *scp, int color)
3341 {
3342     ++scp->sc->videoio_in_progress;
3343     (*scp->rndr->draw_border)(scp, color);
3344     --scp->sc->videoio_in_progress;
3345 }
3346 
3347 #ifndef SC_NO_FONT_LOADING
3348 void
3349 sc_load_font(scr_stat *scp, int page, int size, u_char *buf,
3350 	     int base, int count)
3351 {
3352     sc_softc_t *sc;
3353 
3354     sc = scp->sc;
3355     sc->font_loading_in_progress = TRUE;
3356     (*vidsw[sc->adapter]->load_font)(sc->adp, page, size, buf, base, count);
3357     sc->font_loading_in_progress = FALSE;
3358 }
3359 
3360 void
3361 sc_save_font(scr_stat *scp, int page, int size, u_char *buf,
3362 	     int base, int count)
3363 {
3364     sc_softc_t *sc;
3365 
3366     sc = scp->sc;
3367     sc->font_loading_in_progress = TRUE;
3368     (*vidsw[sc->adapter]->save_font)(sc->adp, page, size, buf, base, count);
3369     sc->font_loading_in_progress = FALSE;
3370 }
3371 
3372 void
3373 sc_show_font(scr_stat *scp, int page)
3374 {
3375     (*vidsw[scp->sc->adapter]->show_font)(scp->sc->adp, page);
3376 }
3377 #endif /* !SC_NO_FONT_LOADING */
3378 
3379 void
3380 sc_paste(scr_stat *scp, u_char *p, int count)
3381 {
3382     struct tty *tp;
3383     u_char *rmap;
3384 
3385     if (scp->status & MOUSE_VISIBLE) {
3386 	tp = VIRTUAL_TTY(scp->sc, scp->sc->cur_scp->index);
3387 	if (!ISTTYOPEN(tp))
3388 	    return;
3389 	rmap = scp->sc->scr_rmap;
3390 	for (; count > 0; --count)
3391 	    (*linesw[tp->t_line].l_rint)(rmap[*p++], tp);
3392     }
3393 }
3394 
3395 void
3396 sc_bell(scr_stat *scp, int pitch, int duration)
3397 {
3398     if (cold || shutdown_in_progress)
3399 	return;
3400 
3401     if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
3402 	return;
3403 
3404     if (scp->sc->flags & SC_VISUAL_BELL) {
3405 	if (scp->sc->blink_in_progress)
3406 	    return;
3407 	scp->sc->blink_in_progress = 3;
3408 	if (scp != scp->sc->cur_scp)
3409 	    scp->sc->blink_in_progress += 2;
3410 	blink_screen(scp->sc->cur_scp);
3411     } else {
3412 	if (scp != scp->sc->cur_scp)
3413 	    pitch *= 2;
3414 	sysbeep(pitch, duration);
3415     }
3416 }
3417 
3418 static void
3419 blink_screen(void *arg)
3420 {
3421     scr_stat *scp = arg;
3422     struct tty *tp;
3423 
3424     if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
3425 	scp->sc->blink_in_progress = 0;
3426     	mark_all(scp);
3427 	tp = VIRTUAL_TTY(scp->sc, scp->index);
3428 	if (ISTTYOPEN(tp))
3429 	    scstart(tp);
3430 	if (scp->sc->delayed_next_scr)
3431 	    sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
3432     }
3433     else {
3434 	(*scp->rndr->draw)(scp, 0, scp->xsize*scp->ysize,
3435 			   scp->sc->blink_in_progress & 1);
3436 	scp->sc->blink_in_progress--;
3437 	timeout(blink_screen, scp, hz / 10);
3438     }
3439 }
3440