xref: /freebsd/sys/dev/syscons/syscons.c (revision aa0a1e58f0189b0fde359a8bda032887e72057fa)
1 /*-
2  * Copyright (c) 1992-1998 S�ren Schmidt
3  * All rights reserved.
4  *
5  * This code is derived from software contributed to The DragonFly Project
6  * by Sascha Wildner <saw@online.de>
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer,
13  *    without modification, immediately at the beginning of the file.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. The name of the author may not be used to endorse or promote products
18  *    derived from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 
35 #include "opt_compat.h"
36 #include "opt_syscons.h"
37 #include "opt_splash.h"
38 #include "opt_ddb.h"
39 
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/bus.h>
43 #include <sys/conf.h>
44 #include <sys/cons.h>
45 #include <sys/consio.h>
46 #include <sys/kdb.h>
47 #include <sys/eventhandler.h>
48 #include <sys/fbio.h>
49 #include <sys/kbio.h>
50 #include <sys/kernel.h>
51 #include <sys/lock.h>
52 #include <sys/malloc.h>
53 #include <sys/mutex.h>
54 #include <sys/priv.h>
55 #include <sys/proc.h>
56 #include <sys/random.h>
57 #include <sys/reboot.h>
58 #include <sys/serial.h>
59 #include <sys/signalvar.h>
60 #include <sys/sysctl.h>
61 #include <sys/tty.h>
62 #include <sys/power.h>
63 
64 #include <machine/clock.h>
65 #if defined(__sparc64__) || defined(__powerpc__)
66 #include <machine/sc_machdep.h>
67 #else
68 #include <machine/pc/display.h>
69 #endif
70 #if defined( __i386__) || defined(__amd64__)
71 #include <machine/psl.h>
72 #include <machine/frame.h>
73 #endif
74 #include <machine/stdarg.h>
75 
76 #include <dev/kbd/kbdreg.h>
77 #include <dev/fb/fbreg.h>
78 #include <dev/fb/splashreg.h>
79 #include <dev/syscons/syscons.h>
80 
81 #define COLD 0
82 #define WARM 1
83 
84 #define DEFAULT_BLANKTIME	(5*60)		/* 5 minutes */
85 #define MAX_BLANKTIME		(7*24*60*60)	/* 7 days!? */
86 
87 #define KEYCODE_BS		0x0e		/* "<-- Backspace" key, XXX */
88 
89 typedef struct default_attr {
90 	int		std_color;		/* normal hardware color */
91 	int		rev_color;		/* reverse hardware color */
92 } default_attr;
93 
94 static default_attr user_default = {
95     SC_NORM_ATTR,
96     SC_NORM_REV_ATTR,
97 };
98 
99 static	int		sc_console_unit = -1;
100 static	int		sc_saver_keyb_only = 1;
101 static  scr_stat    	*sc_console;
102 static  struct consdev	*sc_consptr;
103 static	scr_stat	main_console;
104 static	struct tty 	*main_devs[MAXCONS];
105 
106 static  char        	init_done = COLD;
107 static  char		shutdown_in_progress = FALSE;
108 static	char		sc_malloc = FALSE;
109 
110 static	int		saver_mode = CONS_NO_SAVER; /* LKM/user saver */
111 static	int		run_scrn_saver = FALSE;	/* should run the saver? */
112 static	int		enable_bell = TRUE; /* enable beeper */
113 
114 #ifndef SC_DISABLE_REBOOT
115 static  int		enable_reboot = TRUE; /* enable keyboard reboot */
116 #endif
117 
118 #ifndef SC_DISABLE_KDBKEY
119 static  int		enable_kdbkey = TRUE; /* enable keyboard debug */
120 #endif
121 
122 static	long        	scrn_blank_time = 0;    /* screen saver timeout value */
123 #ifdef DEV_SPLASH
124 static	int     	scrn_blanked;		/* # of blanked screen */
125 static	int		sticky_splash = FALSE;
126 
127 static	void		none_saver(sc_softc_t *sc, int blank) { }
128 static	void		(*current_saver)(sc_softc_t *, int) = none_saver;
129 #endif
130 
131 SYSCTL_NODE(_hw, OID_AUTO, syscons, CTLFLAG_RD, 0, "syscons");
132 SYSCTL_NODE(_hw_syscons, OID_AUTO, saver, CTLFLAG_RD, 0, "saver");
133 SYSCTL_INT(_hw_syscons_saver, OID_AUTO, keybonly, CTLFLAG_RW,
134     &sc_saver_keyb_only, 0, "screen saver interrupted by input only");
135 SYSCTL_INT(_hw_syscons, OID_AUTO, bell, CTLFLAG_RW, &enable_bell,
136     0, "enable bell");
137 #ifndef SC_DISABLE_REBOOT
138 SYSCTL_INT(_hw_syscons, OID_AUTO, kbd_reboot, CTLFLAG_RW|CTLFLAG_SECURE, &enable_reboot,
139     0, "enable keyboard reboot");
140 #endif
141 #ifndef SC_DISABLE_KDBKEY
142 SYSCTL_INT(_hw_syscons, OID_AUTO, kbd_debug, CTLFLAG_RW|CTLFLAG_SECURE, &enable_kdbkey,
143     0, "enable keyboard debug");
144 #endif
145 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
146 #include "font.h"
147 #endif
148 
149 	tsw_ioctl_t	*sc_user_ioctl;
150 
151 static	bios_values_t	bios_value;
152 
153 static	int		enable_panic_key;
154 SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
155 	   0, "Enable panic via keypress specified in kbdmap(5)");
156 
157 #define SC_CONSOLECTL	255
158 
159 #define VTY_WCHAN(sc, vty) (&SC_DEV(sc, vty))
160 
161 static	int		debugger;
162 
163 /* prototypes */
164 static int sc_allocate_keyboard(sc_softc_t *sc, int unit);
165 static int scvidprobe(int unit, int flags, int cons);
166 static int sckbdprobe(int unit, int flags, int cons);
167 static void scmeminit(void *arg);
168 static int scdevtounit(struct tty *tp);
169 static kbd_callback_func_t sckbdevent;
170 static void scinit(int unit, int flags);
171 static scr_stat *sc_get_stat(struct tty *tp);
172 static void scterm(int unit, int flags);
173 static void scshutdown(void *arg, int howto);
174 static u_int scgetc(sc_softc_t *sc, u_int flags);
175 #define SCGETC_CN	1
176 #define SCGETC_NONBLOCK	2
177 static void sccnupdate(scr_stat *scp);
178 static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
179 static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
180 static timeout_t scrn_timer;
181 static int and_region(int *s1, int *e1, int s2, int e2);
182 static void scrn_update(scr_stat *scp, int show_cursor);
183 
184 #ifdef DEV_SPLASH
185 static int scsplash_callback(int event, void *arg);
186 static void scsplash_saver(sc_softc_t *sc, int show);
187 static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
188 static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
189 static int set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border);
190 static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
191 static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
192 static int wait_scrn_saver_stop(sc_softc_t *sc);
193 #define scsplash_stick(stick)		(sticky_splash = (stick))
194 #else /* !DEV_SPLASH */
195 #define scsplash_stick(stick)
196 #endif /* DEV_SPLASH */
197 
198 static int do_switch_scr(sc_softc_t *sc, int s);
199 static int vt_proc_alive(scr_stat *scp);
200 static int signal_vt_rel(scr_stat *scp);
201 static int signal_vt_acq(scr_stat *scp);
202 static int finish_vt_rel(scr_stat *scp, int release, int *s);
203 static int finish_vt_acq(scr_stat *scp);
204 static void exchange_scr(sc_softc_t *sc);
205 static void update_cursor_image(scr_stat *scp);
206 static void change_cursor_shape(scr_stat *scp, int flags, int base, int height);
207 static int save_kbd_state(scr_stat *scp);
208 static int update_kbd_state(scr_stat *scp, int state, int mask);
209 static int update_kbd_leds(scr_stat *scp, int which);
210 static timeout_t blink_screen;
211 static struct tty *sc_alloc_tty(int, int);
212 
213 static cn_probe_t	sc_cnprobe;
214 static cn_init_t	sc_cninit;
215 static cn_term_t	sc_cnterm;
216 static cn_getc_t	sc_cngetc;
217 static cn_putc_t	sc_cnputc;
218 
219 CONSOLE_DRIVER(sc);
220 
221 static	tsw_open_t	sctty_open;
222 static	tsw_close_t	sctty_close;
223 static	tsw_outwakeup_t	sctty_outwakeup;
224 static	tsw_ioctl_t	sctty_ioctl;
225 static	tsw_mmap_t	sctty_mmap;
226 
227 static struct ttydevsw sc_ttydevsw = {
228 	.tsw_open	= sctty_open,
229 	.tsw_close	= sctty_close,
230 	.tsw_outwakeup	= sctty_outwakeup,
231 	.tsw_ioctl	= sctty_ioctl,
232 	.tsw_mmap	= sctty_mmap,
233 };
234 
235 static d_ioctl_t	consolectl_ioctl;
236 
237 static struct cdevsw consolectl_devsw = {
238 	.d_version	= D_VERSION,
239 	.d_flags	= D_NEEDGIANT,
240 	.d_ioctl	= consolectl_ioctl,
241 	.d_name		= "consolectl",
242 };
243 
244 int
245 sc_probe_unit(int unit, int flags)
246 {
247     if (!scvidprobe(unit, flags, FALSE)) {
248 	if (bootverbose)
249 	    printf("%s%d: no video adapter found.\n", SC_DRIVER_NAME, unit);
250 	return ENXIO;
251     }
252 
253     /* syscons will be attached even when there is no keyboard */
254     sckbdprobe(unit, flags, FALSE);
255 
256     return 0;
257 }
258 
259 /* probe video adapters, return TRUE if found */
260 static int
261 scvidprobe(int unit, int flags, int cons)
262 {
263     /*
264      * Access the video adapter driver through the back door!
265      * Video adapter drivers need to be configured before syscons.
266      * However, when syscons is being probed as the low-level console,
267      * they have not been initialized yet.  We force them to initialize
268      * themselves here. XXX
269      */
270     vid_configure(cons ? VIO_PROBE_ONLY : 0);
271 
272     return (vid_find_adapter("*", unit) >= 0);
273 }
274 
275 /* probe the keyboard, return TRUE if found */
276 static int
277 sckbdprobe(int unit, int flags, int cons)
278 {
279     /* access the keyboard driver through the backdoor! */
280     kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
281 
282     return (kbd_find_keyboard("*", unit) >= 0);
283 }
284 
285 static char
286 *adapter_name(video_adapter_t *adp)
287 {
288     static struct {
289 	int type;
290 	char *name[2];
291     } names[] = {
292 	{ KD_MONO,	{ "MDA",	"MDA" } },
293 	{ KD_HERCULES,	{ "Hercules",	"Hercules" } },
294 	{ KD_CGA,	{ "CGA",	"CGA" } },
295 	{ KD_EGA,	{ "EGA",	"EGA (mono)" } },
296 	{ KD_VGA,	{ "VGA",	"VGA (mono)" } },
297 	{ KD_PC98,	{ "PC-98x1",	"PC-98x1" } },
298 	{ KD_TGA,	{ "TGA",	"TGA" } },
299 	{ -1,		{ "Unknown",	"Unknown" } },
300     };
301     int i;
302 
303     for (i = 0; names[i].type != -1; ++i)
304 	if (names[i].type == adp->va_type)
305 	    break;
306     return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
307 }
308 
309 static void
310 sctty_outwakeup(struct tty *tp)
311 {
312     size_t len;
313     u_char buf[PCBURST];
314     scr_stat *scp = sc_get_stat(tp);
315 
316     if (scp->status & SLKED ||
317 	(scp == scp->sc->cur_scp && scp->sc->blink_in_progress))
318 	return;
319 
320     for (;;) {
321 	len = ttydisc_getc(tp, buf, sizeof buf);
322 	if (len == 0)
323 	    break;
324 	sc_puts(scp, buf, len, 0);
325     }
326 }
327 
328 static struct tty *
329 sc_alloc_tty(int index, int devnum)
330 {
331 	struct sc_ttysoftc *stc;
332 	struct tty *tp;
333 
334 	/* Allocate TTY object and softc to store unit number. */
335 	stc = malloc(sizeof(struct sc_ttysoftc), M_DEVBUF, M_WAITOK);
336 	stc->st_index = index;
337 	stc->st_stat = NULL;
338 	tp = tty_alloc_mutex(&sc_ttydevsw, stc, &Giant);
339 
340 	/* Create device node. */
341 	tty_makedev(tp, NULL, "v%r", devnum);
342 
343 	return (tp);
344 }
345 
346 #ifdef SC_PIXEL_MODE
347 static void
348 sc_set_vesa_mode(scr_stat *scp, sc_softc_t *sc, int unit)
349 {
350 	video_info_t info;
351 	u_char *font;
352 	int depth;
353 	int fontsize;
354 	int i;
355 	int vmode;
356 
357 	vmode = 0;
358 	(void)resource_int_value("sc", unit, "vesa_mode", &vmode);
359 	if (vmode < M_VESA_BASE || vmode > M_VESA_MODE_MAX ||
360 	    vidd_get_info(sc->adp, vmode, &info) != 0 ||
361 	    !sc_support_pixel_mode(&info))
362 		vmode = 0;
363 
364 	/*
365 	 * If the mode is unset or unsupported, search for an available
366 	 * 800x600 graphics mode with the highest color depth.
367 	 */
368 	if (vmode == 0) {
369 		for (depth = 0, i = M_VESA_BASE; i <= M_VESA_MODE_MAX; i++)
370 			if (vidd_get_info(sc->adp, i, &info) == 0 &&
371 			    info.vi_width == 800 && info.vi_height == 600 &&
372 			    sc_support_pixel_mode(&info) &&
373 			    info.vi_depth > depth) {
374 				vmode = i;
375 				depth = info.vi_depth;
376 			}
377 		if (vmode == 0)
378 			return;
379 		vidd_get_info(sc->adp, vmode, &info);
380 	}
381 
382 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
383 	fontsize = info.vi_cheight;
384 #else
385 	fontsize = scp->font_size;
386 #endif
387 	if (fontsize < 14)
388 		fontsize = 8;
389 	else if (fontsize >= 16)
390 		fontsize = 16;
391 	else
392 		fontsize = 14;
393 #ifndef SC_NO_FONT_LOADING
394 	switch (fontsize) {
395 	case 8:
396 		if ((sc->fonts_loaded & FONT_8) == 0)
397 			return;
398 		font = sc->font_8;
399 		break;
400 	case 14:
401 		if ((sc->fonts_loaded & FONT_14) == 0)
402 			return;
403 		font = sc->font_14;
404 		break;
405 	case 16:
406 		if ((sc->fonts_loaded & FONT_16) == 0)
407 			return;
408 		font = sc->font_16;
409 		break;
410 	}
411 #else
412 	font = NULL;
413 #endif
414 #ifdef DEV_SPLASH
415 	if ((sc->flags & SC_SPLASH_SCRN) != 0)
416 		splash_term(sc->adp);
417 #endif
418 #ifndef SC_NO_HISTORY
419 	if (scp->history != NULL) {
420 		sc_vtb_append(&scp->vtb, 0, scp->history,
421 		    scp->ypos * scp->xsize + scp->xpos);
422 		scp->history_pos = sc_vtb_tail(scp->history);
423 	}
424 #endif
425 	vidd_set_mode(sc->adp, vmode);
426 	scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
427 	scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
428 	scp->xpixel = info.vi_width;
429 	scp->ypixel = info.vi_height;
430 	scp->xsize = scp->xpixel / 8;
431 	scp->ysize = scp->ypixel / fontsize;
432 	scp->xpos = 0;
433 	scp->ypos = scp->ysize - 1;
434 	scp->xoff = scp->yoff = 0;
435 	scp->font = font;
436 	scp->font_size = fontsize;
437 	scp->font_width = 8;
438 	scp->start = scp->xsize * scp->ysize - 1;
439 	scp->end = 0;
440 	scp->cursor_pos = scp->cursor_oldpos = scp->xsize * scp->xsize;
441 	scp->mode = sc->initial_mode = vmode;
442 #ifndef __sparc64__
443 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
444 	    (void *)sc->adp->va_window, FALSE);
445 #endif
446 	sc_alloc_scr_buffer(scp, FALSE, FALSE);
447 	sc_init_emulator(scp, NULL);
448 #ifndef SC_NO_CUTPASTE
449 	sc_alloc_cut_buffer(scp, FALSE);
450 #endif
451 #ifndef SC_NO_HISTORY
452 	sc_alloc_history_buffer(scp, 0, 0, FALSE);
453 #endif
454 	sc_set_border(scp, scp->border);
455 	sc_set_cursor_image(scp);
456 	scp->status &= ~UNKNOWN_MODE;
457 #ifdef DEV_SPLASH
458 	if ((sc->flags & SC_SPLASH_SCRN) != 0)
459 		splash_init(sc->adp, scsplash_callback, sc);
460 #endif
461 }
462 #endif
463 
464 int
465 sc_attach_unit(int unit, int flags)
466 {
467     sc_softc_t *sc;
468     scr_stat *scp;
469     struct cdev *dev;
470     int vc;
471 
472     flags &= ~SC_KERNEL_CONSOLE;
473 
474     if (sc_console_unit == unit) {
475 	/*
476 	 * If this unit is being used as the system console, we need to
477 	 * adjust some variables and buffers before and after scinit().
478 	 */
479 	/* assert(sc_console != NULL) */
480 	flags |= SC_KERNEL_CONSOLE;
481 	scmeminit(NULL);
482     }
483     scinit(unit, flags);
484 
485     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
486     sc->config = flags;
487     scp = sc_get_stat(sc->dev[0]);
488     if (sc_console == NULL)	/* sc_console_unit < 0 */
489 	sc_console = scp;
490 
491 #ifdef SC_PIXEL_MODE
492     if ((sc->config & SC_VESAMODE) != 0)
493 	sc_set_vesa_mode(scp, sc, unit);
494 #endif /* SC_PIXEL_MODE */
495 
496     /* initialize cursor */
497     if (!ISGRAPHSC(scp))
498     	update_cursor_image(scp);
499 
500     /* get screen update going */
501     scrn_timer(sc);
502 
503     /* set up the keyboard */
504     (void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
505     update_kbd_state(scp, scp->status, LOCK_MASK);
506 
507     printf("%s%d: %s <%d virtual consoles, flags=0x%x>\n",
508 	   SC_DRIVER_NAME, unit, adapter_name(sc->adp), sc->vtys, sc->config);
509     if (bootverbose) {
510 	printf("%s%d:", SC_DRIVER_NAME, unit);
511     	if (sc->adapter >= 0)
512 	    printf(" fb%d", sc->adapter);
513 	if (sc->keyboard >= 0)
514 	    printf(", kbd%d", sc->keyboard);
515 	if (scp->tsw)
516 	    printf(", terminal emulator: %s (%s)",
517 		   scp->tsw->te_name, scp->tsw->te_desc);
518 	printf("\n");
519     }
520 
521     /* register a shutdown callback for the kernel console */
522     if (sc_console_unit == unit)
523 	EVENTHANDLER_REGISTER(shutdown_pre_sync, scshutdown,
524 			      (void *)(uintptr_t)unit, SHUTDOWN_PRI_DEFAULT);
525 
526     for (vc = 0; vc < sc->vtys; vc++) {
527 	if (sc->dev[vc] == NULL) {
528 		sc->dev[vc] = sc_alloc_tty(vc, vc + unit * MAXCONS);
529 		if (vc == 0 && sc->dev == main_devs)
530 			SC_STAT(sc->dev[0]) = &main_console;
531 	}
532 	/*
533 	 * The first vty already has struct tty and scr_stat initialized
534 	 * in scinit().  The other vtys will have these structs when
535 	 * first opened.
536 	 */
537     }
538 
539     dev = make_dev(&consolectl_devsw, 0, UID_ROOT, GID_WHEEL, 0600,
540         "consolectl");
541     dev->si_drv1 = sc->dev[0];
542 
543     return 0;
544 }
545 
546 static void
547 scmeminit(void *arg)
548 {
549     if (sc_malloc)
550 	return;
551     sc_malloc = TRUE;
552 
553     /*
554      * As soon as malloc() becomes functional, we had better allocate
555      * various buffers for the kernel console.
556      */
557 
558     if (sc_console_unit < 0)	/* sc_console == NULL */
559 	return;
560 
561     /* copy the temporary buffer to the final buffer */
562     sc_alloc_scr_buffer(sc_console, FALSE, FALSE);
563 
564 #ifndef SC_NO_CUTPASTE
565     sc_alloc_cut_buffer(sc_console, FALSE);
566 #endif
567 
568 #ifndef SC_NO_HISTORY
569     /* initialize history buffer & pointers */
570     sc_alloc_history_buffer(sc_console, 0, 0, FALSE);
571 #endif
572 }
573 
574 /* XXX */
575 SYSINIT(sc_mem, SI_SUB_KMEM, SI_ORDER_ANY, scmeminit, NULL);
576 
577 static int
578 scdevtounit(struct tty *tp)
579 {
580     int vty = SC_VTY(tp);
581 
582     if (vty == SC_CONSOLECTL)
583 	return ((sc_console != NULL) ? sc_console->sc->unit : -1);
584     else if ((vty < 0) || (vty >= MAXCONS*sc_max_unit()))
585 	return -1;
586     else
587 	return vty/MAXCONS;
588 }
589 
590 static int
591 sctty_open(struct tty *tp)
592 {
593     int unit = scdevtounit(tp);
594     sc_softc_t *sc;
595     scr_stat *scp;
596 #ifndef __sparc64__
597     keyarg_t key;
598 #endif
599 
600     DPRINTF(5, ("scopen: dev:%s, unit:%d, vty:%d\n",
601 		devtoname(tp->t_dev), unit, SC_VTY(tp)));
602 
603     sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
604     if (sc == NULL)
605 	return ENXIO;
606 
607     if (!tty_opened(tp)) {
608         /* Use the current setting of the <-- key as default VERASE. */
609         /* If the Delete key is preferable, an stty is necessary     */
610 #ifndef __sparc64__
611 	if (sc->kbd != NULL) {
612 	    key.keynum = KEYCODE_BS;
613 	    (void)kbdd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
614             tp->t_termios.c_cc[VERASE] = key.key.map[0];
615 	}
616 #endif
617     }
618 
619     scp = sc_get_stat(tp);
620     if (scp == NULL) {
621 	scp = SC_STAT(tp) = alloc_scp(sc, SC_VTY(tp));
622 	if (ISGRAPHSC(scp))
623 	    sc_set_pixel_mode(scp, NULL, 0, 0, 16, 8);
624     }
625     if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
626 	tp->t_winsize.ws_col = scp->xsize;
627 	tp->t_winsize.ws_row = scp->ysize;
628     }
629 
630     return (0);
631 }
632 
633 static void
634 sctty_close(struct tty *tp)
635 {
636     scr_stat *scp;
637     int s;
638 
639     if (SC_VTY(tp) != SC_CONSOLECTL) {
640 	scp = sc_get_stat(tp);
641 	/* were we in the middle of the VT switching process? */
642 	DPRINTF(5, ("sc%d: scclose(), ", scp->sc->unit));
643 	s = spltty();
644 	if ((scp == scp->sc->cur_scp) && (scp->sc->unit == sc_console_unit))
645 	    cnavailable(sc_consptr, TRUE);
646 	if (finish_vt_rel(scp, TRUE, &s) == 0)	/* force release */
647 	    DPRINTF(5, ("reset WAIT_REL, "));
648 	if (finish_vt_acq(scp) == 0)		/* force acknowledge */
649 	    DPRINTF(5, ("reset WAIT_ACQ, "));
650 #ifdef not_yet_done
651 	if (scp == &main_console) {
652 	    scp->pid = 0;
653 	    scp->proc = NULL;
654 	    scp->smode.mode = VT_AUTO;
655 	}
656 	else {
657 	    sc_vtb_destroy(&scp->vtb);
658 #ifndef __sparc64__
659 	    sc_vtb_destroy(&scp->scr);
660 #endif
661 	    sc_free_history_buffer(scp, scp->ysize);
662 	    SC_STAT(tp) = NULL;
663 	    free(scp, M_DEVBUF);
664 	}
665 #else
666 	scp->pid = 0;
667 	scp->proc = NULL;
668 	scp->smode.mode = VT_AUTO;
669 #endif
670 	scp->kbd_mode = K_XLATE;
671 	if (scp == scp->sc->cur_scp)
672 	    (void)kbdd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
673 	DPRINTF(5, ("done.\n"));
674     }
675 }
676 
677 #if 0 /* XXX mpsafetty: fix screensaver. What about outwakeup? */
678 static int
679 scread(struct cdev *dev, struct uio *uio, int flag)
680 {
681     if (!sc_saver_keyb_only)
682 	sc_touch_scrn_saver();
683     return ttyread(dev, uio, flag);
684 }
685 #endif
686 
687 static int
688 sckbdevent(keyboard_t *thiskbd, int event, void *arg)
689 {
690     sc_softc_t *sc;
691     struct tty *cur_tty;
692     int c, error = 0;
693     size_t len;
694     const u_char *cp;
695 
696     sc = (sc_softc_t *)arg;
697     /* assert(thiskbd == sc->kbd) */
698 
699     mtx_lock(&Giant);
700 
701     switch (event) {
702     case KBDIO_KEYINPUT:
703 	break;
704     case KBDIO_UNLOADING:
705 	sc->kbd = NULL;
706 	sc->keyboard = -1;
707 	kbd_release(thiskbd, (void *)&sc->keyboard);
708 	goto done;
709     default:
710 	error = EINVAL;
711 	goto done;
712     }
713 
714     /*
715      * Loop while there is still input to get from the keyboard.
716      * I don't think this is nessesary, and it doesn't fix
717      * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
718      */
719     while ((c = scgetc(sc, SCGETC_NONBLOCK)) != NOKEY) {
720 
721 	cur_tty = SC_DEV(sc, sc->cur_scp->index);
722 	if (!tty_opened(cur_tty))
723 	    continue;
724 
725 	if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
726 	    continue;
727 
728 	switch (KEYFLAGS(c)) {
729 	case 0x0000: /* normal key */
730 	    ttydisc_rint(cur_tty, KEYCHAR(c), 0);
731 	    break;
732 	case FKEY:  /* function key, return string */
733 	    cp = (*sc->cur_scp->tsw->te_fkeystr)(sc->cur_scp, c);
734 	    if (cp != NULL) {
735 	    	ttydisc_rint_simple(cur_tty, cp, strlen(cp));
736 		break;
737 	    }
738 	    cp = kbdd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
739 	    if (cp != NULL)
740 	    	ttydisc_rint_simple(cur_tty, cp, len);
741 	    break;
742 	case MKEY:  /* meta is active, prepend ESC */
743 	    ttydisc_rint(cur_tty, 0x1b, 0);
744 	    ttydisc_rint(cur_tty, KEYCHAR(c), 0);
745 	    break;
746 	case BKEY:  /* backtab fixed sequence (esc [ Z) */
747 	    ttydisc_rint_simple(cur_tty, "\x1B[Z", 3);
748 	    break;
749 	}
750 
751 	ttydisc_rint_done(cur_tty);
752     }
753 
754     sc->cur_scp->status |= MOUSE_HIDDEN;
755 
756 done:
757     mtx_unlock(&Giant);
758     return (error);
759 }
760 
761 static int
762 sctty_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
763 {
764     int error;
765     int i;
766     sc_softc_t *sc;
767     scr_stat *scp;
768     int s;
769 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
770     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
771     int ival;
772 #endif
773 
774     /* If there is a user_ioctl function call that first */
775     if (sc_user_ioctl) {
776 	error = (*sc_user_ioctl)(tp, cmd, data, td);
777 	if (error != ENOIOCTL)
778 	    return error;
779     }
780 
781     error = sc_vid_ioctl(tp, cmd, data, td);
782     if (error != ENOIOCTL)
783 	return error;
784 
785 #ifndef SC_NO_HISTORY
786     error = sc_hist_ioctl(tp, cmd, data, td);
787     if (error != ENOIOCTL)
788 	return error;
789 #endif
790 
791 #ifndef SC_NO_SYSMOUSE
792     error = sc_mouse_ioctl(tp, cmd, data, td);
793     if (error != ENOIOCTL)
794 	return error;
795 #endif
796 
797     scp = sc_get_stat(tp);
798     /* assert(scp != NULL) */
799     /* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
800     sc = scp->sc;
801 
802     if (scp->tsw) {
803 	error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, td);
804 	if (error != ENOIOCTL)
805 	    return error;
806     }
807 
808     switch (cmd) {  		/* process console hardware related ioctl's */
809 
810     case GIO_ATTR:      	/* get current attributes */
811 	/* this ioctl is not processed here, but in the terminal emulator */
812 	return ENOTTY;
813 
814     case GIO_COLOR:     	/* is this a color console ? */
815 	*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
816 	return 0;
817 
818     case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
819 	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
820             return EINVAL;
821 	s = spltty();
822 	scrn_blank_time = *(int *)data;
823 	run_scrn_saver = (scrn_blank_time != 0);
824 	splx(s);
825 	return 0;
826 
827     case CONS_CURSORTYPE:   	/* set cursor type (obsolete) */
828 	s = spltty();
829 	*(int *)data &= CONS_CURSOR_ATTRS;
830 	sc_change_cursor_shape(scp, *(int *)data, -1, -1);
831 	splx(s);
832 	return 0;
833 
834     case CONS_GETCURSORSHAPE:   /* get cursor shape (new interface) */
835 	if (((int *)data)[0] & CONS_LOCAL_CURSOR) {
836 	    ((int *)data)[0] = scp->curr_curs_attr.flags;
837 	    ((int *)data)[1] = scp->curr_curs_attr.base;
838 	    ((int *)data)[2] = scp->curr_curs_attr.height;
839 	} else {
840 	    ((int *)data)[0] = sc->curs_attr.flags;
841 	    ((int *)data)[1] = sc->curs_attr.base;
842 	    ((int *)data)[2] = sc->curs_attr.height;
843 	}
844 	return 0;
845 
846     case CONS_SETCURSORSHAPE:   /* set cursor shape (new interface) */
847 	s = spltty();
848 	sc_change_cursor_shape(scp, ((int *)data)[0],
849 	    ((int *)data)[1], ((int *)data)[2]);
850 	splx(s);
851 	return 0;
852 
853     case CONS_BELLTYPE: 	/* set bell type sound/visual */
854 	if ((*(int *)data) & CONS_VISUAL_BELL)
855 	    sc->flags |= SC_VISUAL_BELL;
856 	else
857 	    sc->flags &= ~SC_VISUAL_BELL;
858 	if ((*(int *)data) & CONS_QUIET_BELL)
859 	    sc->flags |= SC_QUIET_BELL;
860 	else
861 	    sc->flags &= ~SC_QUIET_BELL;
862 	return 0;
863 
864     case CONS_GETINFO:  	/* get current (virtual) console info */
865     {
866 	vid_info_t *ptr = (vid_info_t*)data;
867 	if (ptr->size == sizeof(struct vid_info)) {
868 	    ptr->m_num = sc->cur_scp->index;
869 	    ptr->font_size = scp->font_size;
870 	    ptr->mv_col = scp->xpos;
871 	    ptr->mv_row = scp->ypos;
872 	    ptr->mv_csz = scp->xsize;
873 	    ptr->mv_rsz = scp->ysize;
874 	    ptr->mv_hsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
875 	    /*
876 	     * The following fields are filled by the terminal emulator. XXX
877 	     *
878 	     * ptr->mv_norm.fore
879 	     * ptr->mv_norm.back
880 	     * ptr->mv_rev.fore
881 	     * ptr->mv_rev.back
882 	     */
883 	    ptr->mv_grfc.fore = 0;      /* not supported */
884 	    ptr->mv_grfc.back = 0;      /* not supported */
885 	    ptr->mv_ovscan = scp->border;
886 	    if (scp == sc->cur_scp)
887 		save_kbd_state(scp);
888 	    ptr->mk_keylock = scp->status & LOCK_MASK;
889 	    return 0;
890 	}
891 	return EINVAL;
892     }
893 
894     case CONS_GETVERS:  	/* get version number */
895 	*(int*)data = 0x200;    /* version 2.0 */
896 	return 0;
897 
898     case CONS_IDLE:		/* see if the screen has been idle */
899 	/*
900 	 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
901 	 * the user process may have been writing something on the
902 	 * screen and syscons is not aware of it. Declare the screen
903 	 * is NOT idle if it is in one of these modes. But there is
904 	 * an exception to it; if a screen saver is running in the
905 	 * graphics mode in the current screen, we should say that the
906 	 * screen has been idle.
907 	 */
908 	*(int *)data = (sc->flags & SC_SCRN_IDLE)
909 		       && (!ISGRAPHSC(sc->cur_scp)
910 			   || (sc->cur_scp->status & SAVER_RUNNING));
911 	return 0;
912 
913     case CONS_SAVERMODE:	/* set saver mode */
914 	switch(*(int *)data) {
915 	case CONS_NO_SAVER:
916 	case CONS_USR_SAVER:
917 	    /* if a LKM screen saver is running, stop it first. */
918 	    scsplash_stick(FALSE);
919 	    saver_mode = *(int *)data;
920 	    s = spltty();
921 #ifdef DEV_SPLASH
922 	    if ((error = wait_scrn_saver_stop(NULL))) {
923 		splx(s);
924 		return error;
925 	    }
926 #endif
927 	    run_scrn_saver = TRUE;
928 	    if (saver_mode == CONS_USR_SAVER)
929 		scp->status |= SAVER_RUNNING;
930 	    else
931 		scp->status &= ~SAVER_RUNNING;
932 	    scsplash_stick(TRUE);
933 	    splx(s);
934 	    break;
935 	case CONS_LKM_SAVER:
936 	    s = spltty();
937 	    if ((saver_mode == CONS_USR_SAVER) && (scp->status & SAVER_RUNNING))
938 		scp->status &= ~SAVER_RUNNING;
939 	    saver_mode = *(int *)data;
940 	    splx(s);
941 	    break;
942 	default:
943 	    return EINVAL;
944 	}
945 	return 0;
946 
947     case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
948 	/*
949 	 * Note that this ioctl does not guarantee the screen saver
950 	 * actually starts or stops. It merely attempts to do so...
951 	 */
952 	s = spltty();
953 	run_scrn_saver = (*(int *)data != 0);
954 	if (run_scrn_saver)
955 	    sc->scrn_time_stamp -= scrn_blank_time;
956 	splx(s);
957 	return 0;
958 
959     case CONS_SCRSHOT:		/* get a screen shot */
960     {
961 	int retval, hist_rsz;
962 	size_t lsize, csize;
963 	vm_offset_t frbp, hstp;
964 	unsigned lnum;
965 	scrshot_t *ptr = (scrshot_t *)data;
966 	void *outp = ptr->buf;
967 
968 	if (ptr->x < 0 || ptr->y < 0 || ptr->xsize < 0 || ptr->ysize < 0)
969 		return EINVAL;
970 	s = spltty();
971 	if (ISGRAPHSC(scp)) {
972 	    splx(s);
973 	    return EOPNOTSUPP;
974 	}
975 	hist_rsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
976 	if (((u_int)ptr->x + ptr->xsize) > scp->xsize ||
977 	    ((u_int)ptr->y + ptr->ysize) > (scp->ysize + hist_rsz)) {
978 	    splx(s);
979 	    return EINVAL;
980 	}
981 
982 	lsize = scp->xsize * sizeof(u_int16_t);
983 	csize = ptr->xsize * sizeof(u_int16_t);
984 	/* Pointer to the last line of framebuffer */
985 	frbp = scp->vtb.vtb_buffer + scp->ysize * lsize + ptr->x *
986 	       sizeof(u_int16_t);
987 	/* Pointer to the last line of target buffer */
988 	outp = (char *)outp + ptr->ysize * csize;
989 	/* Pointer to the last line of history buffer */
990 	if (scp->history != NULL)
991 	    hstp = scp->history->vtb_buffer + sc_vtb_tail(scp->history) *
992 		sizeof(u_int16_t) + ptr->x * sizeof(u_int16_t);
993 	else
994 	    hstp = 0;
995 
996 	retval = 0;
997 	for (lnum = 0; lnum < (ptr->y + ptr->ysize); lnum++) {
998 	    if (lnum < scp->ysize) {
999 		frbp -= lsize;
1000 	    } else {
1001 		hstp -= lsize;
1002 		if (hstp < scp->history->vtb_buffer)
1003 		    hstp += scp->history->vtb_rows * lsize;
1004 		frbp = hstp;
1005 	    }
1006 	    if (lnum < ptr->y)
1007 		continue;
1008 	    outp = (char *)outp - csize;
1009 	    retval = copyout((void *)frbp, outp, csize);
1010 	    if (retval != 0)
1011 		break;
1012 	}
1013 	splx(s);
1014 	return retval;
1015     }
1016 
1017     case VT_SETMODE:    	/* set screen switcher mode */
1018     {
1019 	struct vt_mode *mode;
1020 	struct proc *p1;
1021 
1022 	mode = (struct vt_mode *)data;
1023 	DPRINTF(5, ("%s%d: VT_SETMODE ", SC_DRIVER_NAME, sc->unit));
1024 	if (scp->smode.mode == VT_PROCESS) {
1025 	    p1 = pfind(scp->pid);
1026     	    if (scp->proc == p1 && scp->proc != td->td_proc) {
1027 		if (p1)
1028 		    PROC_UNLOCK(p1);
1029 		DPRINTF(5, ("error EPERM\n"));
1030 		return EPERM;
1031 	    }
1032 	    if (p1)
1033 		PROC_UNLOCK(p1);
1034 	}
1035 	s = spltty();
1036 	if (mode->mode == VT_AUTO) {
1037 	    scp->smode.mode = VT_AUTO;
1038 	    scp->proc = NULL;
1039 	    scp->pid = 0;
1040 	    DPRINTF(5, ("VT_AUTO, "));
1041 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
1042 		cnavailable(sc_consptr, TRUE);
1043 	    /* were we in the middle of the vty switching process? */
1044 	    if (finish_vt_rel(scp, TRUE, &s) == 0)
1045 		DPRINTF(5, ("reset WAIT_REL, "));
1046 	    if (finish_vt_acq(scp) == 0)
1047 		DPRINTF(5, ("reset WAIT_ACQ, "));
1048 	} else {
1049 	    if (!ISSIGVALID(mode->relsig) || !ISSIGVALID(mode->acqsig)
1050 		|| !ISSIGVALID(mode->frsig)) {
1051 		splx(s);
1052 		DPRINTF(5, ("error EINVAL\n"));
1053 		return EINVAL;
1054 	    }
1055 	    DPRINTF(5, ("VT_PROCESS %d, ", td->td_proc->p_pid));
1056 	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
1057 	    scp->proc = td->td_proc;
1058 	    scp->pid = scp->proc->p_pid;
1059 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
1060 		cnavailable(sc_consptr, FALSE);
1061 	}
1062 	splx(s);
1063 	DPRINTF(5, ("\n"));
1064 	return 0;
1065     }
1066 
1067     case VT_GETMODE:    	/* get screen switcher mode */
1068 	bcopy(&scp->smode, data, sizeof(struct vt_mode));
1069 	return 0;
1070 
1071 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1072     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1073     case _IO('v', 4):
1074 	ival = IOCPARM_IVAL(data);
1075 	data = (caddr_t)&ival;
1076 	/* FALLTHROUGH */
1077 #endif
1078     case VT_RELDISP:    	/* screen switcher ioctl */
1079 	s = spltty();
1080 	/*
1081 	 * This must be the current vty which is in the VT_PROCESS
1082 	 * switching mode...
1083 	 */
1084 	if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
1085 	    splx(s);
1086 	    return EINVAL;
1087 	}
1088 	/* ...and this process is controlling it. */
1089 	if (scp->proc != td->td_proc) {
1090 	    splx(s);
1091 	    return EPERM;
1092 	}
1093 	error = EINVAL;
1094 	switch(*(int *)data) {
1095 	case VT_FALSE:  	/* user refuses to release screen, abort */
1096 	    if ((error = finish_vt_rel(scp, FALSE, &s)) == 0)
1097 		DPRINTF(5, ("%s%d: VT_FALSE\n", SC_DRIVER_NAME, sc->unit));
1098 	    break;
1099 	case VT_TRUE:   	/* user has released screen, go on */
1100 	    if ((error = finish_vt_rel(scp, TRUE, &s)) == 0)
1101 		DPRINTF(5, ("%s%d: VT_TRUE\n", SC_DRIVER_NAME, sc->unit));
1102 	    break;
1103 	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
1104 	    if ((error = finish_vt_acq(scp)) == 0)
1105 		DPRINTF(5, ("%s%d: VT_ACKACQ\n", SC_DRIVER_NAME, sc->unit));
1106 	    break;
1107 	default:
1108 	    break;
1109 	}
1110 	splx(s);
1111 	return error;
1112 
1113     case VT_OPENQRY:    	/* return free virtual console */
1114 	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
1115 	    tp = SC_DEV(sc, i);
1116 	    if (!tty_opened(tp)) {
1117 		*(int *)data = i + 1;
1118 		return 0;
1119 	    }
1120 	}
1121 	return EINVAL;
1122 
1123 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1124     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1125     case _IO('v', 5):
1126 	ival = IOCPARM_IVAL(data);
1127 	data = (caddr_t)&ival;
1128 	/* FALLTHROUGH */
1129 #endif
1130     case VT_ACTIVATE:   	/* switch to screen *data */
1131 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1132 	s = spltty();
1133 	error = sc_clean_up(sc->cur_scp);
1134 	splx(s);
1135 	if (error)
1136 	    return error;
1137 	error = sc_switch_scr(sc, i);
1138 	return (error);
1139 
1140 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1141     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1142     case _IO('v', 6):
1143 	ival = IOCPARM_IVAL(data);
1144 	data = (caddr_t)&ival;
1145 	/* FALLTHROUGH */
1146 #endif
1147     case VT_WAITACTIVE: 	/* wait for switch to occur */
1148 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1149 	if ((i < sc->first_vty) || (i >= sc->first_vty + sc->vtys))
1150 	    return EINVAL;
1151 	if (i == sc->cur_scp->index)
1152 	    return 0;
1153 	error = tsleep(VTY_WCHAN(sc, i), (PZERO + 1) | PCATCH, "waitvt", 0);
1154 	return error;
1155 
1156     case VT_GETACTIVE:		/* get active vty # */
1157 	*(int *)data = sc->cur_scp->index + 1;
1158 	return 0;
1159 
1160     case VT_GETINDEX:		/* get this vty # */
1161 	*(int *)data = scp->index + 1;
1162 	return 0;
1163 
1164     case VT_LOCKSWITCH:		/* prevent vty switching */
1165 	if ((*(int *)data) & 0x01)
1166 	    sc->flags |= SC_SCRN_VTYLOCK;
1167 	else
1168 	    sc->flags &= ~SC_SCRN_VTYLOCK;
1169 	return 0;
1170 
1171     case KDENABIO:      	/* allow io operations */
1172 	error = priv_check(td, PRIV_IO);
1173 	if (error != 0)
1174 	    return error;
1175 	error = securelevel_gt(td->td_ucred, 0);
1176 	if (error != 0)
1177 		return error;
1178 #ifdef __i386__
1179 	td->td_frame->tf_eflags |= PSL_IOPL;
1180 #elif defined(__amd64__)
1181 	td->td_frame->tf_rflags |= PSL_IOPL;
1182 #endif
1183 	return 0;
1184 
1185     case KDDISABIO:     	/* disallow io operations (default) */
1186 #ifdef __i386__
1187 	td->td_frame->tf_eflags &= ~PSL_IOPL;
1188 #elif defined(__amd64__)
1189 	td->td_frame->tf_rflags &= ~PSL_IOPL;
1190 #endif
1191 	return 0;
1192 
1193 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1194     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1195     case _IO('K', 20):
1196 	ival = IOCPARM_IVAL(data);
1197 	data = (caddr_t)&ival;
1198 	/* FALLTHROUGH */
1199 #endif
1200     case KDSKBSTATE:    	/* set keyboard state (locks) */
1201 	if (*(int *)data & ~LOCK_MASK)
1202 	    return EINVAL;
1203 	scp->status &= ~LOCK_MASK;
1204 	scp->status |= *(int *)data;
1205 	if (scp == sc->cur_scp)
1206 	    update_kbd_state(scp, scp->status, LOCK_MASK);
1207 	return 0;
1208 
1209     case KDGKBSTATE:    	/* get keyboard state (locks) */
1210 	if (scp == sc->cur_scp)
1211 	    save_kbd_state(scp);
1212 	*(int *)data = scp->status & LOCK_MASK;
1213 	return 0;
1214 
1215     case KDGETREPEAT:      	/* get keyboard repeat & delay rates */
1216     case KDSETREPEAT:      	/* set keyboard repeat & delay rates (new) */
1217 	error = kbdd_ioctl(sc->kbd, cmd, data);
1218 	if (error == ENOIOCTL)
1219 	    error = ENODEV;
1220 	return error;
1221 
1222 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1223     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1224     case _IO('K', 67):
1225 	ival = IOCPARM_IVAL(data);
1226 	data = (caddr_t)&ival;
1227 	/* FALLTHROUGH */
1228 #endif
1229     case KDSETRAD:      	/* set keyboard repeat & delay rates (old) */
1230 	if (*(int *)data & ~0x7f)
1231 	    return EINVAL;
1232 	error = kbdd_ioctl(sc->kbd, KDSETRAD, data);
1233 	if (error == ENOIOCTL)
1234 	    error = ENODEV;
1235 	return error;
1236 
1237 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1238     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1239     case _IO('K', 7):
1240 	ival = IOCPARM_IVAL(data);
1241 	data = (caddr_t)&ival;
1242 	/* FALLTHROUGH */
1243 #endif
1244     case KDSKBMODE:     	/* set keyboard mode */
1245 	switch (*(int *)data) {
1246 	case K_XLATE:   	/* switch to XLT ascii mode */
1247 	case K_RAW: 		/* switch to RAW scancode mode */
1248 	case K_CODE: 		/* switch to CODE mode */
1249 	    scp->kbd_mode = *(int *)data;
1250 	    if (scp == sc->cur_scp)
1251 		(void)kbdd_ioctl(sc->kbd, KDSKBMODE, data);
1252 	    return 0;
1253 	default:
1254 	    return EINVAL;
1255 	}
1256 	/* NOT REACHED */
1257 
1258     case KDGKBMODE:     	/* get keyboard mode */
1259 	*(int *)data = scp->kbd_mode;
1260 	return 0;
1261 
1262     case KDGKBINFO:
1263 	error = kbdd_ioctl(sc->kbd, cmd, data);
1264 	if (error == ENOIOCTL)
1265 	    error = ENODEV;
1266 	return error;
1267 
1268 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1269     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1270     case _IO('K', 8):
1271 	ival = IOCPARM_IVAL(data);
1272 	data = (caddr_t)&ival;
1273 	/* FALLTHROUGH */
1274 #endif
1275     case KDMKTONE:      	/* sound the bell */
1276 	if (*(int*)data)
1277 	    sc_bell(scp, (*(int*)data)&0xffff,
1278 		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1279 	else
1280 	    sc_bell(scp, scp->bell_pitch, scp->bell_duration);
1281 	return 0;
1282 
1283 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1284     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1285     case _IO('K', 63):
1286 	ival = IOCPARM_IVAL(data);
1287 	data = (caddr_t)&ival;
1288 	/* FALLTHROUGH */
1289 #endif
1290     case KIOCSOUND:     	/* make tone (*data) hz */
1291 	if (scp == sc->cur_scp) {
1292 	    if (*(int *)data)
1293 		return sc_tone(*(int *)data);
1294 	    else
1295 		return sc_tone(0);
1296 	}
1297 	return 0;
1298 
1299     case KDGKBTYPE:     	/* get keyboard type */
1300 	error = kbdd_ioctl(sc->kbd, cmd, data);
1301 	if (error == ENOIOCTL) {
1302 	    /* always return something? XXX */
1303 	    *(int *)data = 0;
1304 	}
1305 	return 0;
1306 
1307 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1308     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1309     case _IO('K', 66):
1310 	ival = IOCPARM_IVAL(data);
1311 	data = (caddr_t)&ival;
1312 	/* FALLTHROUGH */
1313 #endif
1314     case KDSETLED:      	/* set keyboard LED status */
1315 	if (*(int *)data & ~LED_MASK)	/* FIXME: LOCK_MASK? */
1316 	    return EINVAL;
1317 	scp->status &= ~LED_MASK;
1318 	scp->status |= *(int *)data;
1319 	if (scp == sc->cur_scp)
1320 	    update_kbd_leds(scp, scp->status);
1321 	return 0;
1322 
1323     case KDGETLED:      	/* get keyboard LED status */
1324 	if (scp == sc->cur_scp)
1325 	    save_kbd_state(scp);
1326 	*(int *)data = scp->status & LED_MASK;
1327 	return 0;
1328 
1329     case KBADDKBD:		/* add/remove keyboard to/from mux */
1330     case KBRELKBD:
1331 	error = kbdd_ioctl(sc->kbd, cmd, data);
1332 	if (error == ENOIOCTL)
1333 	    error = ENODEV;
1334 	return error;
1335 
1336 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1337     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1338     case _IO('c', 110):
1339 	ival = IOCPARM_IVAL(data);
1340 	data = (caddr_t)&ival;
1341 	/* FALLTHROUGH */
1342 #endif
1343     case CONS_SETKBD: 		/* set the new keyboard */
1344 	{
1345 	    keyboard_t *newkbd;
1346 
1347 	    s = spltty();
1348 	    newkbd = kbd_get_keyboard(*(int *)data);
1349 	    if (newkbd == NULL) {
1350 		splx(s);
1351 		return EINVAL;
1352 	    }
1353 	    error = 0;
1354 	    if (sc->kbd != newkbd) {
1355 		i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
1356 				 (void *)&sc->keyboard, sckbdevent, sc);
1357 		/* i == newkbd->kb_index */
1358 		if (i >= 0) {
1359 		    if (sc->kbd != NULL) {
1360 			save_kbd_state(sc->cur_scp);
1361 			kbd_release(sc->kbd, (void *)&sc->keyboard);
1362 		    }
1363 		    sc->kbd = kbd_get_keyboard(i); /* sc->kbd == newkbd */
1364 		    sc->keyboard = i;
1365 		    (void)kbdd_ioctl(sc->kbd, KDSKBMODE,
1366 			      (caddr_t)&sc->cur_scp->kbd_mode);
1367 		    update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1368 				     LOCK_MASK);
1369 		} else {
1370 		    error = EPERM;	/* XXX */
1371 		}
1372 	    }
1373 	    splx(s);
1374 	    return error;
1375 	}
1376 
1377     case CONS_RELKBD: 		/* release the current keyboard */
1378 	s = spltty();
1379 	error = 0;
1380 	if (sc->kbd != NULL) {
1381 	    save_kbd_state(sc->cur_scp);
1382 	    error = kbd_release(sc->kbd, (void *)&sc->keyboard);
1383 	    if (error == 0) {
1384 		sc->kbd = NULL;
1385 		sc->keyboard = -1;
1386 	    }
1387 	}
1388 	splx(s);
1389 	return error;
1390 
1391     case CONS_GETTERM:		/* get the current terminal emulator info */
1392 	{
1393 	    sc_term_sw_t *sw;
1394 
1395 	    if (((term_info_t *)data)->ti_index == 0) {
1396 		sw = scp->tsw;
1397 	    } else {
1398 		sw = sc_term_match_by_number(((term_info_t *)data)->ti_index);
1399 	    }
1400 	    if (sw != NULL) {
1401 		strncpy(((term_info_t *)data)->ti_name, sw->te_name,
1402 			sizeof(((term_info_t *)data)->ti_name));
1403 		strncpy(((term_info_t *)data)->ti_desc, sw->te_desc,
1404 			sizeof(((term_info_t *)data)->ti_desc));
1405 		((term_info_t *)data)->ti_flags = 0;
1406 		return 0;
1407 	    } else {
1408 		((term_info_t *)data)->ti_name[0] = '\0';
1409 		((term_info_t *)data)->ti_desc[0] = '\0';
1410 		((term_info_t *)data)->ti_flags = 0;
1411 		return EINVAL;
1412 	    }
1413 	}
1414 
1415     case CONS_SETTERM:		/* set the current terminal emulator */
1416 	s = spltty();
1417 	error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
1418 	/* FIXME: what if scp == sc_console! XXX */
1419 	splx(s);
1420 	return error;
1421 
1422     case GIO_SCRNMAP:   	/* get output translation table */
1423 	bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
1424 	return 0;
1425 
1426     case PIO_SCRNMAP:   	/* set output translation table */
1427 	bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
1428 	for (i=0; i<sizeof(sc->scr_map); i++) {
1429 	    sc->scr_rmap[sc->scr_map[i]] = i;
1430 	}
1431 	return 0;
1432 
1433     case GIO_KEYMAP:		/* get keyboard translation table */
1434     case PIO_KEYMAP:		/* set keyboard translation table */
1435     case GIO_DEADKEYMAP:	/* get accent key translation table */
1436     case PIO_DEADKEYMAP:	/* set accent key translation table */
1437     case GETFKEY:		/* get function key string */
1438     case SETFKEY:		/* set function key string */
1439 	error = kbdd_ioctl(sc->kbd, cmd, data);
1440 	if (error == ENOIOCTL)
1441 	    error = ENODEV;
1442 	return error;
1443 
1444 #ifndef SC_NO_FONT_LOADING
1445 
1446     case PIO_FONT8x8:   	/* set 8x8 dot font */
1447 	if (!ISFONTAVAIL(sc->adp->va_flags))
1448 	    return ENXIO;
1449 	bcopy(data, sc->font_8, 8*256);
1450 	sc->fonts_loaded |= FONT_8;
1451 	/*
1452 	 * FONT KLUDGE
1453 	 * Always use the font page #0. XXX
1454 	 * Don't load if the current font size is not 8x8.
1455 	 */
1456 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
1457 	    sc_load_font(sc->cur_scp, 0, 8, 8, sc->font_8, 0, 256);
1458 	return 0;
1459 
1460     case GIO_FONT8x8:   	/* get 8x8 dot font */
1461 	if (!ISFONTAVAIL(sc->adp->va_flags))
1462 	    return ENXIO;
1463 	if (sc->fonts_loaded & FONT_8) {
1464 	    bcopy(sc->font_8, data, 8*256);
1465 	    return 0;
1466 	}
1467 	else
1468 	    return ENXIO;
1469 
1470     case PIO_FONT8x14:  	/* set 8x14 dot font */
1471 	if (!ISFONTAVAIL(sc->adp->va_flags))
1472 	    return ENXIO;
1473 	bcopy(data, sc->font_14, 14*256);
1474 	sc->fonts_loaded |= FONT_14;
1475 	/*
1476 	 * FONT KLUDGE
1477 	 * Always use the font page #0. XXX
1478 	 * Don't load if the current font size is not 8x14.
1479 	 */
1480 	if (ISTEXTSC(sc->cur_scp)
1481 	    && (sc->cur_scp->font_size >= 14)
1482 	    && (sc->cur_scp->font_size < 16))
1483 	    sc_load_font(sc->cur_scp, 0, 14, 8, sc->font_14, 0, 256);
1484 	return 0;
1485 
1486     case GIO_FONT8x14:  	/* get 8x14 dot font */
1487 	if (!ISFONTAVAIL(sc->adp->va_flags))
1488 	    return ENXIO;
1489 	if (sc->fonts_loaded & FONT_14) {
1490 	    bcopy(sc->font_14, data, 14*256);
1491 	    return 0;
1492 	}
1493 	else
1494 	    return ENXIO;
1495 
1496     case PIO_FONT8x16:  	/* set 8x16 dot font */
1497 	if (!ISFONTAVAIL(sc->adp->va_flags))
1498 	    return ENXIO;
1499 	bcopy(data, sc->font_16, 16*256);
1500 	sc->fonts_loaded |= FONT_16;
1501 	/*
1502 	 * FONT KLUDGE
1503 	 * Always use the font page #0. XXX
1504 	 * Don't load if the current font size is not 8x16.
1505 	 */
1506 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
1507 	    sc_load_font(sc->cur_scp, 0, 16, 8, sc->font_16, 0, 256);
1508 	return 0;
1509 
1510     case GIO_FONT8x16:  	/* get 8x16 dot font */
1511 	if (!ISFONTAVAIL(sc->adp->va_flags))
1512 	    return ENXIO;
1513 	if (sc->fonts_loaded & FONT_16) {
1514 	    bcopy(sc->font_16, data, 16*256);
1515 	    return 0;
1516 	}
1517 	else
1518 	    return ENXIO;
1519 
1520 #endif /* SC_NO_FONT_LOADING */
1521 
1522     default:
1523 	break;
1524     }
1525 
1526     return (ENOIOCTL);
1527 }
1528 
1529 static int
1530 consolectl_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
1531     struct thread *td)
1532 {
1533 
1534 	return sctty_ioctl(dev->si_drv1, cmd, data, td);
1535 }
1536 
1537 static void
1538 sc_cnprobe(struct consdev *cp)
1539 {
1540     int unit;
1541     int flags;
1542 
1543     cp->cn_pri = sc_get_cons_priority(&unit, &flags);
1544 
1545     /* a video card is always required */
1546     if (!scvidprobe(unit, flags, TRUE))
1547 	cp->cn_pri = CN_DEAD;
1548 
1549     /* syscons will become console even when there is no keyboard */
1550     sckbdprobe(unit, flags, TRUE);
1551 
1552     if (cp->cn_pri == CN_DEAD)
1553 	return;
1554 
1555     /* initialize required fields */
1556     strcpy(cp->cn_name, "ttyv0");
1557 }
1558 
1559 static void
1560 sc_cninit(struct consdev *cp)
1561 {
1562     int unit;
1563     int flags;
1564 
1565     sc_get_cons_priority(&unit, &flags);
1566     scinit(unit, flags | SC_KERNEL_CONSOLE);
1567     sc_console_unit = unit;
1568     sc_console = sc_get_stat(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1569     sc_consptr = cp;
1570 }
1571 
1572 static void
1573 sc_cnterm(struct consdev *cp)
1574 {
1575     /* we are not the kernel console any more, release everything */
1576 
1577     if (sc_console_unit < 0)
1578 	return;			/* shouldn't happen */
1579 
1580 #if 0 /* XXX */
1581     sc_clear_screen(sc_console);
1582     sccnupdate(sc_console);
1583 #endif
1584 
1585     scterm(sc_console_unit, SC_KERNEL_CONSOLE);
1586     sc_console_unit = -1;
1587     sc_console = NULL;
1588 }
1589 
1590 static void
1591 sc_cnputc(struct consdev *cd, int c)
1592 {
1593     u_char buf[1];
1594     scr_stat *scp = sc_console;
1595 #ifndef SC_NO_HISTORY
1596 #if 0
1597     struct tty *tp;
1598 #endif
1599 #endif /* !SC_NO_HISTORY */
1600     int s;
1601 
1602     /* assert(sc_console != NULL) */
1603 
1604 #ifndef SC_NO_HISTORY
1605     if (scp == scp->sc->cur_scp && scp->status & SLKED) {
1606 	scp->status &= ~SLKED;
1607 	update_kbd_state(scp, scp->status, SLKED);
1608 	if (scp->status & BUFFER_SAVED) {
1609 	    if (!sc_hist_restore(scp))
1610 		sc_remove_cutmarking(scp);
1611 	    scp->status &= ~BUFFER_SAVED;
1612 	    scp->status |= CURSOR_ENABLED;
1613 	    sc_draw_cursor_image(scp);
1614 	}
1615 #if 0
1616 	/*
1617 	 * XXX: Now that TTY's have their own locks, we cannot process
1618 	 * any data after disabling scroll lock. cnputs already holds a
1619 	 * spinlock.
1620 	 */
1621 	tp = SC_DEV(scp->sc, scp->index);
1622 	tty_lock(tp);
1623 	if (tty_opened(tp))
1624 	    sctty_outwakeup(tp);
1625 	tty_unlock(tp);
1626 #endif
1627     }
1628 #endif /* !SC_NO_HISTORY */
1629 
1630     buf[0] = c;
1631     sc_puts(scp, buf, 1, 1);
1632 
1633     s = spltty();	/* block sckbdevent and scrn_timer */
1634     sccnupdate(scp);
1635     splx(s);
1636 }
1637 
1638 static int
1639 sc_cngetc(struct consdev *cd)
1640 {
1641     static struct fkeytab fkey;
1642     static int fkeycp;
1643     scr_stat *scp;
1644     const u_char *p;
1645     int cur_mode;
1646     int s = spltty();	/* block sckbdevent and scrn_timer while we poll */
1647     int c;
1648 
1649     /* assert(sc_console != NULL) */
1650 
1651     /*
1652      * Stop the screen saver and update the screen if necessary.
1653      * What if we have been running in the screen saver code... XXX
1654      */
1655     sc_touch_scrn_saver();
1656     scp = sc_console->sc->cur_scp;	/* XXX */
1657     sccnupdate(scp);
1658 
1659     if (fkeycp < fkey.len) {
1660 	splx(s);
1661 	return fkey.str[fkeycp++];
1662     }
1663 
1664     if (scp->sc->kbd == NULL) {
1665 	splx(s);
1666 	return -1;
1667     }
1668 
1669     /*
1670      * Make sure the keyboard is accessible even when the kbd device
1671      * driver is disabled.
1672      */
1673     kbdd_enable(scp->sc->kbd);
1674 
1675     /* we shall always use the keyboard in the XLATE mode here */
1676     cur_mode = scp->kbd_mode;
1677     scp->kbd_mode = K_XLATE;
1678     (void)kbdd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1679 
1680     kbdd_poll(scp->sc->kbd, TRUE);
1681     c = scgetc(scp->sc, SCGETC_CN | SCGETC_NONBLOCK);
1682     kbdd_poll(scp->sc->kbd, FALSE);
1683 
1684     scp->kbd_mode = cur_mode;
1685     (void)kbdd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1686     kbdd_disable(scp->sc->kbd);
1687     splx(s);
1688 
1689     switch (KEYFLAGS(c)) {
1690     case 0:	/* normal char */
1691 	return KEYCHAR(c);
1692     case FKEY:	/* function key */
1693 	p = (*scp->tsw->te_fkeystr)(scp, c);
1694 	if (p != NULL) {
1695 	    fkey.len = strlen(p);
1696 	    bcopy(p, fkey.str, fkey.len);
1697 	    fkeycp = 1;
1698 	    return fkey.str[0];
1699 	}
1700 	p = kbdd_get_fkeystr(scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
1701 	fkey.len = fkeycp;
1702 	if ((p != NULL) && (fkey.len > 0)) {
1703 	    bcopy(p, fkey.str, fkey.len);
1704 	    fkeycp = 1;
1705 	    return fkey.str[0];
1706 	}
1707 	return c;	/* XXX */
1708     case NOKEY:
1709     case ERRKEY:
1710     default:
1711 	return -1;
1712     }
1713     /* NOT REACHED */
1714 }
1715 
1716 static void
1717 sccnupdate(scr_stat *scp)
1718 {
1719     /* this is a cut-down version of scrn_timer()... */
1720 
1721     if (scp->sc->suspend_in_progress || scp->sc->font_loading_in_progress)
1722 	return;
1723 
1724     if (debugger > 0 || panicstr || shutdown_in_progress) {
1725 	sc_touch_scrn_saver();
1726     } else if (scp != scp->sc->cur_scp) {
1727 	return;
1728     }
1729 
1730     if (!run_scrn_saver)
1731 	scp->sc->flags &= ~SC_SCRN_IDLE;
1732 #ifdef DEV_SPLASH
1733     if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
1734 	if (scp->sc->flags & SC_SCRN_BLANKED)
1735             stop_scrn_saver(scp->sc, current_saver);
1736 #endif
1737 
1738     if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress
1739 	|| scp->sc->switch_in_progress)
1740 	return;
1741     /*
1742      * FIXME: unlike scrn_timer(), we call scrn_update() from here even
1743      * when write_in_progress is non-zero.  XXX
1744      */
1745 
1746     if (!ISGRAPHSC(scp) && !(scp->sc->flags & SC_SCRN_BLANKED))
1747 	scrn_update(scp, TRUE);
1748 }
1749 
1750 static void
1751 scrn_timer(void *arg)
1752 {
1753 #ifndef PC98
1754     static int kbd_interval = 0;
1755 #endif
1756     struct timeval tv;
1757     sc_softc_t *sc;
1758     scr_stat *scp;
1759     int again;
1760     int s;
1761 
1762     again = (arg != NULL);
1763     if (arg != NULL)
1764 	sc = (sc_softc_t *)arg;
1765     else if (sc_console != NULL)
1766 	sc = sc_console->sc;
1767     else
1768 	return;
1769 
1770     /* don't do anything when we are performing some I/O operations */
1771     if (sc->suspend_in_progress || sc->font_loading_in_progress) {
1772 	if (again)
1773 	    timeout(scrn_timer, sc, hz / 10);
1774 	return;
1775     }
1776     s = spltty();
1777 
1778 #ifndef PC98
1779     if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
1780 	/* try to allocate a keyboard automatically */
1781 	if (++kbd_interval >= 25) {
1782 	    sc->keyboard = sc_allocate_keyboard(sc, -1);
1783 	    if (sc->keyboard >= 0) {
1784 		sc->kbd = kbd_get_keyboard(sc->keyboard);
1785 		(void)kbdd_ioctl(sc->kbd, KDSKBMODE,
1786 			  (caddr_t)&sc->cur_scp->kbd_mode);
1787 		update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1788 				 LOCK_MASK);
1789 	    }
1790 	    kbd_interval = 0;
1791 	}
1792     }
1793 #endif /* PC98 */
1794 
1795     /* find the vty to update */
1796     scp = sc->cur_scp;
1797 
1798     /* should we stop the screen saver? */
1799     getmicrouptime(&tv);
1800     if (debugger > 0 || panicstr || shutdown_in_progress)
1801 	sc_touch_scrn_saver();
1802     if (run_scrn_saver) {
1803 	if (tv.tv_sec > sc->scrn_time_stamp + scrn_blank_time)
1804 	    sc->flags |= SC_SCRN_IDLE;
1805 	else
1806 	    sc->flags &= ~SC_SCRN_IDLE;
1807     } else {
1808 	sc->scrn_time_stamp = tv.tv_sec;
1809 	sc->flags &= ~SC_SCRN_IDLE;
1810 	if (scrn_blank_time > 0)
1811 	    run_scrn_saver = TRUE;
1812     }
1813 #ifdef DEV_SPLASH
1814     if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
1815 	if (sc->flags & SC_SCRN_BLANKED)
1816             stop_scrn_saver(sc, current_saver);
1817 #endif
1818 
1819     /* should we just return ? */
1820     if (sc->blink_in_progress || sc->switch_in_progress
1821 	|| sc->write_in_progress) {
1822 	if (again)
1823 	    timeout(scrn_timer, sc, hz / 10);
1824 	splx(s);
1825 	return;
1826     }
1827 
1828     /* Update the screen */
1829     scp = sc->cur_scp;		/* cur_scp may have changed... */
1830     if (!ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1831 	scrn_update(scp, TRUE);
1832 
1833 #ifdef DEV_SPLASH
1834     /* should we activate the screen saver? */
1835     if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
1836 	if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
1837 	    (*current_saver)(sc, TRUE);
1838 #endif
1839 
1840     if (again)
1841 	timeout(scrn_timer, sc, hz / 25);
1842     splx(s);
1843 }
1844 
1845 static int
1846 and_region(int *s1, int *e1, int s2, int e2)
1847 {
1848     if (*e1 < s2 || e2 < *s1)
1849 	return FALSE;
1850     *s1 = imax(*s1, s2);
1851     *e1 = imin(*e1, e2);
1852     return TRUE;
1853 }
1854 
1855 static void
1856 scrn_update(scr_stat *scp, int show_cursor)
1857 {
1858     int start;
1859     int end;
1860     int s;
1861     int e;
1862 
1863     /* assert(scp == scp->sc->cur_scp) */
1864 
1865     SC_VIDEO_LOCK(scp->sc);
1866 
1867 #ifndef SC_NO_CUTPASTE
1868     /* remove the previous mouse pointer image if necessary */
1869     if (scp->status & MOUSE_VISIBLE) {
1870 	s = scp->mouse_pos;
1871 	e = scp->mouse_pos + scp->xsize + 1;
1872 	if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN))
1873 	    || and_region(&s, &e, scp->start, scp->end)
1874 	    || ((scp->status & CURSOR_ENABLED) &&
1875 		(scp->cursor_pos != scp->cursor_oldpos) &&
1876 		(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos)
1877 		 || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) {
1878 	    sc_remove_mouse_image(scp);
1879 	    if (scp->end >= scp->xsize*scp->ysize)
1880 		scp->end = scp->xsize*scp->ysize - 1;
1881 	}
1882     }
1883 #endif /* !SC_NO_CUTPASTE */
1884 
1885 #if 1
1886     /* debug: XXX */
1887     if (scp->end >= scp->xsize*scp->ysize) {
1888 	printf("scrn_update(): scp->end %d > size_of_screen!!\n", scp->end);
1889 	scp->end = scp->xsize*scp->ysize - 1;
1890     }
1891     if (scp->start < 0) {
1892 	printf("scrn_update(): scp->start %d < 0\n", scp->start);
1893 	scp->start = 0;
1894     }
1895 #endif
1896 
1897     /* update screen image */
1898     if (scp->start <= scp->end)  {
1899 	if (scp->mouse_cut_end >= 0) {
1900 	    /* there is a marked region for cut & paste */
1901 	    if (scp->mouse_cut_start <= scp->mouse_cut_end) {
1902 		start = scp->mouse_cut_start;
1903 		end = scp->mouse_cut_end;
1904 	    } else {
1905 		start = scp->mouse_cut_end;
1906 		end = scp->mouse_cut_start - 1;
1907 	    }
1908 	    s = start;
1909 	    e = end;
1910 	    /* does the cut-mark region overlap with the update region? */
1911 	    if (and_region(&s, &e, scp->start, scp->end)) {
1912 		(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
1913 		s = 0;
1914 		e = start - 1;
1915 		if (and_region(&s, &e, scp->start, scp->end))
1916 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1917 		s = end + 1;
1918 		e = scp->xsize*scp->ysize - 1;
1919 		if (and_region(&s, &e, scp->start, scp->end))
1920 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1921 	    } else {
1922 		(*scp->rndr->draw)(scp, scp->start,
1923 				   scp->end - scp->start + 1, FALSE);
1924 	    }
1925 	} else {
1926 	    (*scp->rndr->draw)(scp, scp->start,
1927 			       scp->end - scp->start + 1, FALSE);
1928 	}
1929     }
1930 
1931     /* we are not to show the cursor and the mouse pointer... */
1932     if (!show_cursor) {
1933         scp->end = 0;
1934         scp->start = scp->xsize*scp->ysize - 1;
1935 	SC_VIDEO_UNLOCK(scp->sc);
1936 	return;
1937     }
1938 
1939     /* update cursor image */
1940     if (scp->status & CURSOR_ENABLED) {
1941 	s = scp->start;
1942 	e = scp->end;
1943         /* did cursor move since last time ? */
1944         if (scp->cursor_pos != scp->cursor_oldpos) {
1945             /* do we need to remove old cursor image ? */
1946             if (!and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
1947                 sc_remove_cursor_image(scp);
1948             sc_draw_cursor_image(scp);
1949         } else {
1950             if (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos))
1951 		/* cursor didn't move, but has been overwritten */
1952 		sc_draw_cursor_image(scp);
1953 	    else if (scp->curs_attr.flags & CONS_BLINK_CURSOR)
1954 		/* if it's a blinking cursor, update it */
1955 		(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
1956 					   sc_inside_cutmark(scp,
1957 					       scp->cursor_pos));
1958         }
1959     }
1960 
1961 #ifndef SC_NO_CUTPASTE
1962     /* update "pseudo" mouse pointer image */
1963     if (scp->sc->flags & SC_MOUSE_ENABLED) {
1964 	if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
1965 	    scp->status &= ~MOUSE_MOVED;
1966 	    sc_draw_mouse_image(scp);
1967 	}
1968     }
1969 #endif /* SC_NO_CUTPASTE */
1970 
1971     scp->end = 0;
1972     scp->start = scp->xsize*scp->ysize - 1;
1973 
1974     SC_VIDEO_UNLOCK(scp->sc);
1975 }
1976 
1977 #ifdef DEV_SPLASH
1978 static int
1979 scsplash_callback(int event, void *arg)
1980 {
1981     sc_softc_t *sc;
1982     int error;
1983 
1984     sc = (sc_softc_t *)arg;
1985 
1986     switch (event) {
1987     case SPLASH_INIT:
1988 	if (add_scrn_saver(scsplash_saver) == 0) {
1989 	    sc->flags &= ~SC_SAVER_FAILED;
1990 	    run_scrn_saver = TRUE;
1991 	    if (cold && !(boothowto & RB_VERBOSE)) {
1992 		scsplash_stick(TRUE);
1993 		(*current_saver)(sc, TRUE);
1994 	    }
1995 	}
1996 	return 0;
1997 
1998     case SPLASH_TERM:
1999 	if (current_saver == scsplash_saver) {
2000 	    scsplash_stick(FALSE);
2001 	    error = remove_scrn_saver(scsplash_saver);
2002 	    if (error)
2003 		return error;
2004 	}
2005 	return 0;
2006 
2007     default:
2008 	return EINVAL;
2009     }
2010 }
2011 
2012 static void
2013 scsplash_saver(sc_softc_t *sc, int show)
2014 {
2015     static int busy = FALSE;
2016     scr_stat *scp;
2017 
2018     if (busy)
2019 	return;
2020     busy = TRUE;
2021 
2022     scp = sc->cur_scp;
2023     if (show) {
2024 	if (!(sc->flags & SC_SAVER_FAILED)) {
2025 	    if (!(sc->flags & SC_SCRN_BLANKED))
2026 		set_scrn_saver_mode(scp, -1, NULL, 0);
2027 	    switch (splash(sc->adp, TRUE)) {
2028 	    case 0:		/* succeeded */
2029 		break;
2030 	    case EAGAIN:	/* try later */
2031 		restore_scrn_saver_mode(scp, FALSE);
2032 		sc_touch_scrn_saver();		/* XXX */
2033 		break;
2034 	    default:
2035 		sc->flags |= SC_SAVER_FAILED;
2036 		scsplash_stick(FALSE);
2037 		restore_scrn_saver_mode(scp, TRUE);
2038 		printf("scsplash_saver(): failed to put up the image\n");
2039 		break;
2040 	    }
2041 	}
2042     } else if (!sticky_splash) {
2043 	if ((sc->flags & SC_SCRN_BLANKED) && (splash(sc->adp, FALSE) == 0))
2044 	    restore_scrn_saver_mode(scp, TRUE);
2045     }
2046     busy = FALSE;
2047 }
2048 
2049 static int
2050 add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2051 {
2052 #if 0
2053     int error;
2054 
2055     if (current_saver != none_saver) {
2056 	error = remove_scrn_saver(current_saver);
2057 	if (error)
2058 	    return error;
2059     }
2060 #endif
2061     if (current_saver != none_saver)
2062 	return EBUSY;
2063 
2064     run_scrn_saver = FALSE;
2065     saver_mode = CONS_LKM_SAVER;
2066     current_saver = this_saver;
2067     return 0;
2068 }
2069 
2070 static int
2071 remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2072 {
2073     if (current_saver != this_saver)
2074 	return EINVAL;
2075 
2076 #if 0
2077     /*
2078      * In order to prevent `current_saver' from being called by
2079      * the timeout routine `scrn_timer()' while we manipulate
2080      * the saver list, we shall set `current_saver' to `none_saver'
2081      * before stopping the current saver, rather than blocking by `splXX()'.
2082      */
2083     current_saver = none_saver;
2084     if (scrn_blanked)
2085         stop_scrn_saver(this_saver);
2086 #endif
2087 
2088     /* unblank all blanked screens */
2089     wait_scrn_saver_stop(NULL);
2090     if (scrn_blanked)
2091 	return EBUSY;
2092 
2093     current_saver = none_saver;
2094     return 0;
2095 }
2096 
2097 static int
2098 set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
2099 {
2100     int s;
2101 
2102     /* assert(scp == scp->sc->cur_scp) */
2103     s = spltty();
2104     if (!ISGRAPHSC(scp))
2105 	sc_remove_cursor_image(scp);
2106     scp->splash_save_mode = scp->mode;
2107     scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
2108     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
2109     scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
2110     scp->sc->flags |= SC_SCRN_BLANKED;
2111     ++scrn_blanked;
2112     splx(s);
2113     if (mode < 0)
2114 	return 0;
2115     scp->mode = mode;
2116     if (set_mode(scp) == 0) {
2117 	if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
2118 	    scp->status |= GRAPHICS_MODE;
2119 #ifndef SC_NO_PALETTE_LOADING
2120 	if (pal != NULL)
2121 	    vidd_load_palette(scp->sc->adp, pal);
2122 #endif
2123 	sc_set_border(scp, border);
2124 	return 0;
2125     } else {
2126 	s = spltty();
2127 	scp->mode = scp->splash_save_mode;
2128 	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2129 	scp->status |= scp->splash_save_status;
2130 	splx(s);
2131 	return 1;
2132     }
2133 }
2134 
2135 static int
2136 restore_scrn_saver_mode(scr_stat *scp, int changemode)
2137 {
2138     int mode;
2139     int status;
2140     int s;
2141 
2142     /* assert(scp == scp->sc->cur_scp) */
2143     s = spltty();
2144     mode = scp->mode;
2145     status = scp->status;
2146     scp->mode = scp->splash_save_mode;
2147     scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2148     scp->status |= scp->splash_save_status;
2149     scp->sc->flags &= ~SC_SCRN_BLANKED;
2150     if (!changemode) {
2151 	if (!ISGRAPHSC(scp))
2152 	    sc_draw_cursor_image(scp);
2153 	--scrn_blanked;
2154 	splx(s);
2155 	return 0;
2156     }
2157     if (set_mode(scp) == 0) {
2158 #ifndef SC_NO_PALETTE_LOADING
2159 #ifdef SC_PIXEL_MODE
2160 	if (scp->sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
2161 	    vidd_load_palette(scp->sc->adp, scp->sc->palette2);
2162 	else
2163 #endif
2164 	vidd_load_palette(scp->sc->adp, scp->sc->palette);
2165 #endif
2166 	--scrn_blanked;
2167 	splx(s);
2168 	return 0;
2169     } else {
2170 	scp->mode = mode;
2171 	scp->status = status;
2172 	splx(s);
2173 	return 1;
2174     }
2175 }
2176 
2177 static void
2178 stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
2179 {
2180     (*saver)(sc, FALSE);
2181     run_scrn_saver = FALSE;
2182     /* the screen saver may have chosen not to stop after all... */
2183     if (sc->flags & SC_SCRN_BLANKED)
2184 	return;
2185 
2186     mark_all(sc->cur_scp);
2187     if (sc->delayed_next_scr)
2188 	sc_switch_scr(sc, sc->delayed_next_scr - 1);
2189     if (debugger == 0)
2190 	wakeup(&scrn_blanked);
2191 }
2192 
2193 static int
2194 wait_scrn_saver_stop(sc_softc_t *sc)
2195 {
2196     int error = 0;
2197 
2198     while (scrn_blanked > 0) {
2199 	run_scrn_saver = FALSE;
2200 	if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
2201 	    error = 0;
2202 	    break;
2203 	}
2204 	error = tsleep(&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
2205 	if ((error != 0) && (error != ERESTART))
2206 	    break;
2207     }
2208     run_scrn_saver = FALSE;
2209     return error;
2210 }
2211 #endif /* DEV_SPLASH */
2212 
2213 void
2214 sc_touch_scrn_saver(void)
2215 {
2216     scsplash_stick(FALSE);
2217     run_scrn_saver = FALSE;
2218 }
2219 
2220 int
2221 sc_switch_scr(sc_softc_t *sc, u_int next_scr)
2222 {
2223     scr_stat *cur_scp;
2224     struct tty *tp;
2225     struct proc *p;
2226     int s;
2227 
2228     DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
2229 
2230     if (sc->cur_scp == NULL)
2231 	return (0);
2232 
2233     /* prevent switch if previously requested */
2234     if (sc->flags & SC_SCRN_VTYLOCK) {
2235 	    sc_bell(sc->cur_scp, sc->cur_scp->bell_pitch,
2236 		sc->cur_scp->bell_duration);
2237 	    return EPERM;
2238     }
2239 
2240     /* delay switch if the screen is blanked or being updated */
2241     if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress
2242 	|| sc->blink_in_progress) {
2243 	sc->delayed_next_scr = next_scr + 1;
2244 	sc_touch_scrn_saver();
2245 	DPRINTF(5, ("switch delayed\n"));
2246 	return 0;
2247     }
2248     sc->delayed_next_scr = 0;
2249 
2250     s = spltty();
2251     cur_scp = sc->cur_scp;
2252 
2253     /* we are in the middle of the vty switching process... */
2254     if (sc->switch_in_progress
2255 	&& (cur_scp->smode.mode == VT_PROCESS)
2256 	&& cur_scp->proc) {
2257 	p = pfind(cur_scp->pid);
2258 	if (cur_scp->proc != p) {
2259 	    if (p)
2260 		PROC_UNLOCK(p);
2261 	    /*
2262 	     * The controlling process has died!!.  Do some clean up.
2263 	     * NOTE:`cur_scp->proc' and `cur_scp->smode.mode'
2264 	     * are not reset here yet; they will be cleared later.
2265 	     */
2266 	    DPRINTF(5, ("cur_scp controlling process %d died, ",
2267 	       cur_scp->pid));
2268 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2269 		/*
2270 		 * Force the previous switch to finish, but return now
2271 		 * with error.
2272 		 */
2273 		DPRINTF(5, ("reset WAIT_REL, "));
2274 		finish_vt_rel(cur_scp, TRUE, &s);
2275 		splx(s);
2276 		DPRINTF(5, ("finishing previous switch\n"));
2277 		return EINVAL;
2278 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2279 		/* let's assume screen switch has been completed. */
2280 		DPRINTF(5, ("reset WAIT_ACQ, "));
2281 		finish_vt_acq(cur_scp);
2282 	    } else {
2283 		/*
2284 	 	 * We are in between screen release and acquisition, and
2285 		 * reached here via scgetc() or scrn_timer() which has
2286 		 * interrupted exchange_scr(). Don't do anything stupid.
2287 		 */
2288 		DPRINTF(5, ("waiting nothing, "));
2289 	    }
2290 	} else {
2291 	    if (p)
2292 		PROC_UNLOCK(p);
2293 	    /*
2294 	     * The controlling process is alive, but not responding...
2295 	     * It is either buggy or it may be just taking time.
2296 	     * The following code is a gross kludge to cope with this
2297 	     * problem for which there is no clean solution. XXX
2298 	     */
2299 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2300 		switch (sc->switch_in_progress++) {
2301 		case 1:
2302 		    break;
2303 		case 2:
2304 		    DPRINTF(5, ("sending relsig again, "));
2305 		    signal_vt_rel(cur_scp);
2306 		    break;
2307 		case 3:
2308 		    break;
2309 		case 4:
2310 		default:
2311 		    /*
2312 		     * Act as if the controlling program returned
2313 		     * VT_FALSE.
2314 		     */
2315 		    DPRINTF(5, ("force reset WAIT_REL, "));
2316 		    finish_vt_rel(cur_scp, FALSE, &s);
2317 		    splx(s);
2318 		    DPRINTF(5, ("act as if VT_FALSE was seen\n"));
2319 		    return EINVAL;
2320 		}
2321 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2322 		switch (sc->switch_in_progress++) {
2323 		case 1:
2324 		    break;
2325 		case 2:
2326 		    DPRINTF(5, ("sending acqsig again, "));
2327 		    signal_vt_acq(cur_scp);
2328 		    break;
2329 		case 3:
2330 		    break;
2331 		case 4:
2332 		default:
2333 		     /* clear the flag and finish the previous switch */
2334 		    DPRINTF(5, ("force reset WAIT_ACQ, "));
2335 		    finish_vt_acq(cur_scp);
2336 		    break;
2337 		}
2338 	    }
2339 	}
2340     }
2341 
2342     /*
2343      * Return error if an invalid argument is given, or vty switch
2344      * is still in progress.
2345      */
2346     if ((next_scr < sc->first_vty) || (next_scr >= sc->first_vty + sc->vtys)
2347 	|| sc->switch_in_progress) {
2348 	splx(s);
2349 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2350 	DPRINTF(5, ("error 1\n"));
2351 	return EINVAL;
2352     }
2353 
2354     /*
2355      * Don't allow switching away from the graphics mode vty
2356      * if the switch mode is VT_AUTO, unless the next vty is the same
2357      * as the current or the current vty has been closed (but showing).
2358      */
2359     tp = SC_DEV(sc, cur_scp->index);
2360     if ((cur_scp->index != next_scr)
2361 	&& tty_opened(tp)
2362 	&& (cur_scp->smode.mode == VT_AUTO)
2363 	&& ISGRAPHSC(cur_scp)) {
2364 	splx(s);
2365 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2366 	DPRINTF(5, ("error, graphics mode\n"));
2367 	return EINVAL;
2368     }
2369 
2370     /*
2371      * Is the wanted vty open? Don't allow switching to a closed vty.
2372      * If we are in DDB, don't switch to a vty in the VT_PROCESS mode.
2373      * Note that we always allow the user to switch to the kernel
2374      * console even if it is closed.
2375      */
2376     if ((sc_console == NULL) || (next_scr != sc_console->index)) {
2377 	tp = SC_DEV(sc, next_scr);
2378 	if (!tty_opened(tp)) {
2379 	    splx(s);
2380 	    sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2381 	    DPRINTF(5, ("error 2, requested vty isn't open!\n"));
2382 	    return EINVAL;
2383 	}
2384 	if ((debugger > 0) && (SC_STAT(tp)->smode.mode == VT_PROCESS)) {
2385 	    splx(s);
2386 	    DPRINTF(5, ("error 3, requested vty is in the VT_PROCESS mode\n"));
2387 	    return EINVAL;
2388 	}
2389     }
2390 
2391     /* this is the start of vty switching process... */
2392     ++sc->switch_in_progress;
2393     sc->old_scp = cur_scp;
2394     sc->new_scp = sc_get_stat(SC_DEV(sc, next_scr));
2395     if (sc->new_scp == sc->old_scp) {
2396 	sc->switch_in_progress = 0;
2397 	/*
2398 	 * XXX wakeup() locks the scheduler lock which will hang if
2399 	 * the lock is in an in-between state, e.g., when we stop at
2400 	 * a breakpoint at fork_exit.  It has always been wrong to call
2401 	 * wakeup() when the debugger is active.  In RELENG_4, wakeup()
2402 	 * is supposed to be locked by splhigh(), but the debugger may
2403 	 * be invoked at splhigh().
2404 	 */
2405 	if (debugger == 0)
2406 	    wakeup(VTY_WCHAN(sc,next_scr));
2407 	splx(s);
2408 	DPRINTF(5, ("switch done (new == old)\n"));
2409 	return 0;
2410     }
2411 
2412     /* has controlling process died? */
2413     vt_proc_alive(sc->old_scp);
2414     vt_proc_alive(sc->new_scp);
2415 
2416     /* wait for the controlling process to release the screen, if necessary */
2417     if (signal_vt_rel(sc->old_scp)) {
2418 	splx(s);
2419 	return 0;
2420     }
2421 
2422     /* go set up the new vty screen */
2423     splx(s);
2424     exchange_scr(sc);
2425     s = spltty();
2426 
2427     /* wake up processes waiting for this vty */
2428     if (debugger == 0)
2429 	wakeup(VTY_WCHAN(sc,next_scr));
2430 
2431     /* wait for the controlling process to acknowledge, if necessary */
2432     if (signal_vt_acq(sc->cur_scp)) {
2433 	splx(s);
2434 	return 0;
2435     }
2436 
2437     sc->switch_in_progress = 0;
2438     if (sc->unit == sc_console_unit)
2439 	cnavailable(sc_consptr,  TRUE);
2440     splx(s);
2441     DPRINTF(5, ("switch done\n"));
2442 
2443     return 0;
2444 }
2445 
2446 static int
2447 do_switch_scr(sc_softc_t *sc, int s)
2448 {
2449     vt_proc_alive(sc->new_scp);
2450 
2451     splx(s);
2452     exchange_scr(sc);
2453     s = spltty();
2454     /* sc->cur_scp == sc->new_scp */
2455     wakeup(VTY_WCHAN(sc,sc->cur_scp->index));
2456 
2457     /* wait for the controlling process to acknowledge, if necessary */
2458     if (!signal_vt_acq(sc->cur_scp)) {
2459 	sc->switch_in_progress = 0;
2460 	if (sc->unit == sc_console_unit)
2461 	    cnavailable(sc_consptr,  TRUE);
2462     }
2463 
2464     return s;
2465 }
2466 
2467 static int
2468 vt_proc_alive(scr_stat *scp)
2469 {
2470     struct proc *p;
2471 
2472     if (scp->proc) {
2473 	if ((p = pfind(scp->pid)) != NULL)
2474 	    PROC_UNLOCK(p);
2475 	if (scp->proc == p)
2476 	    return TRUE;
2477 	scp->proc = NULL;
2478 	scp->smode.mode = VT_AUTO;
2479 	DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
2480     }
2481     return FALSE;
2482 }
2483 
2484 static int
2485 signal_vt_rel(scr_stat *scp)
2486 {
2487     if (scp->smode.mode != VT_PROCESS)
2488 	return FALSE;
2489     scp->status |= SWITCH_WAIT_REL;
2490     PROC_LOCK(scp->proc);
2491     psignal(scp->proc, scp->smode.relsig);
2492     PROC_UNLOCK(scp->proc);
2493     DPRINTF(5, ("sending relsig to %d\n", scp->pid));
2494     return TRUE;
2495 }
2496 
2497 static int
2498 signal_vt_acq(scr_stat *scp)
2499 {
2500     if (scp->smode.mode != VT_PROCESS)
2501 	return FALSE;
2502     if (scp->sc->unit == sc_console_unit)
2503 	cnavailable(sc_consptr,  FALSE);
2504     scp->status |= SWITCH_WAIT_ACQ;
2505     PROC_LOCK(scp->proc);
2506     psignal(scp->proc, scp->smode.acqsig);
2507     PROC_UNLOCK(scp->proc);
2508     DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
2509     return TRUE;
2510 }
2511 
2512 static int
2513 finish_vt_rel(scr_stat *scp, int release, int *s)
2514 {
2515     if (scp == scp->sc->old_scp && scp->status & SWITCH_WAIT_REL) {
2516 	scp->status &= ~SWITCH_WAIT_REL;
2517 	if (release)
2518 	    *s = do_switch_scr(scp->sc, *s);
2519 	else
2520 	    scp->sc->switch_in_progress = 0;
2521 	return 0;
2522     }
2523     return EINVAL;
2524 }
2525 
2526 static int
2527 finish_vt_acq(scr_stat *scp)
2528 {
2529     if (scp == scp->sc->new_scp && scp->status & SWITCH_WAIT_ACQ) {
2530 	scp->status &= ~SWITCH_WAIT_ACQ;
2531 	scp->sc->switch_in_progress = 0;
2532 	return 0;
2533     }
2534     return EINVAL;
2535 }
2536 
2537 static void
2538 exchange_scr(sc_softc_t *sc)
2539 {
2540     scr_stat *scp;
2541 
2542     /* save the current state of video and keyboard */
2543     sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
2544     if (!ISGRAPHSC(sc->old_scp))
2545 	sc_remove_cursor_image(sc->old_scp);
2546     if (sc->old_scp->kbd_mode == K_XLATE)
2547 	save_kbd_state(sc->old_scp);
2548 
2549     /* set up the video for the new screen */
2550     scp = sc->cur_scp = sc->new_scp;
2551 #ifdef PC98
2552     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp) || ISUNKNOWNSC(sc->new_scp))
2553 #else
2554     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
2555 #endif
2556 	set_mode(scp);
2557 #ifndef __sparc64__
2558     else
2559 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2560 		    (void *)sc->adp->va_window, FALSE);
2561 #endif
2562     scp->status |= MOUSE_HIDDEN;
2563     sc_move_cursor(scp, scp->xpos, scp->ypos);
2564     if (!ISGRAPHSC(scp))
2565 	sc_set_cursor_image(scp);
2566 #ifndef SC_NO_PALETTE_LOADING
2567     if (ISGRAPHSC(sc->old_scp)) {
2568 #ifdef SC_PIXEL_MODE
2569 	if (sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
2570 	    vidd_load_palette(sc->adp, sc->palette2);
2571 	else
2572 #endif
2573 	vidd_load_palette(sc->adp, sc->palette);
2574     }
2575 #endif
2576     sc_set_border(scp, scp->border);
2577 
2578     /* set up the keyboard for the new screen */
2579     if (sc->old_scp->kbd_mode != scp->kbd_mode)
2580 	(void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
2581     update_kbd_state(scp, scp->status, LOCK_MASK);
2582 
2583     mark_all(scp);
2584 }
2585 
2586 void
2587 sc_puts(scr_stat *scp, u_char *buf, int len, int kernel)
2588 {
2589     int need_unlock = 0;
2590 
2591 #ifdef DEV_SPLASH
2592     /* make screensaver happy */
2593     if (!sticky_splash && scp == scp->sc->cur_scp && !sc_saver_keyb_only)
2594 	run_scrn_saver = FALSE;
2595 #endif
2596 
2597     if (scp->tsw) {
2598 	if (!kdb_active && !mtx_owned(&scp->scr_lock)) {
2599 		need_unlock = 1;
2600 		mtx_lock_spin(&scp->scr_lock);
2601 	}
2602 	(*scp->tsw->te_puts)(scp, buf, len, kernel);
2603 	if (need_unlock)
2604 		mtx_unlock_spin(&scp->scr_lock);
2605     }
2606 
2607     if (scp->sc->delayed_next_scr)
2608 	sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
2609 }
2610 
2611 void
2612 sc_draw_cursor_image(scr_stat *scp)
2613 {
2614     /* assert(scp == scp->sc->cur_scp); */
2615     SC_VIDEO_LOCK(scp->sc);
2616     (*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
2617 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, TRUE,
2618 			      sc_inside_cutmark(scp, scp->cursor_pos));
2619     scp->cursor_oldpos = scp->cursor_pos;
2620     SC_VIDEO_UNLOCK(scp->sc);
2621 }
2622 
2623 void
2624 sc_remove_cursor_image(scr_stat *scp)
2625 {
2626     /* assert(scp == scp->sc->cur_scp); */
2627     SC_VIDEO_LOCK(scp->sc);
2628     (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
2629 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, FALSE,
2630 			      sc_inside_cutmark(scp, scp->cursor_oldpos));
2631     SC_VIDEO_UNLOCK(scp->sc);
2632 }
2633 
2634 static void
2635 update_cursor_image(scr_stat *scp)
2636 {
2637     /* assert(scp == scp->sc->cur_scp); */
2638     sc_remove_cursor_image(scp);
2639     sc_set_cursor_image(scp);
2640     sc_draw_cursor_image(scp);
2641 }
2642 
2643 void
2644 sc_set_cursor_image(scr_stat *scp)
2645 {
2646     scp->curs_attr.flags = scp->curr_curs_attr.flags;
2647     if (scp->curs_attr.flags & CONS_HIDDEN_CURSOR) {
2648 	/* hidden cursor is internally represented as zero-height underline */
2649 	scp->curs_attr.flags = CONS_CHAR_CURSOR;
2650 	scp->curs_attr.base = scp->curs_attr.height = 0;
2651     } else if (scp->curs_attr.flags & CONS_CHAR_CURSOR) {
2652 	scp->curs_attr.base = imin(scp->curr_curs_attr.base,
2653 				  scp->font_size - 1);
2654 	scp->curs_attr.height = imin(scp->curr_curs_attr.height,
2655 				    scp->font_size - scp->curs_attr.base);
2656     } else {	/* block cursor */
2657 	scp->curs_attr.base = 0;
2658 	scp->curs_attr.height = scp->font_size;
2659     }
2660 
2661     /* assert(scp == scp->sc->cur_scp); */
2662     SC_VIDEO_LOCK(scp->sc);
2663     (*scp->rndr->set_cursor)(scp, scp->curs_attr.base, scp->curs_attr.height,
2664 			     scp->curs_attr.flags & CONS_BLINK_CURSOR);
2665     SC_VIDEO_UNLOCK(scp->sc);
2666 }
2667 
2668 static void
2669 change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2670 {
2671     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp))
2672 	sc_remove_cursor_image(scp);
2673 
2674     if (base >= 0)
2675 	scp->curr_curs_attr.base = base;
2676     if (height >= 0)
2677 	scp->curr_curs_attr.height = height;
2678     if (flags & CONS_RESET_CURSOR)
2679 	scp->curr_curs_attr = scp->dflt_curs_attr;
2680     else
2681 	scp->curr_curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2682 
2683     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp)) {
2684 	sc_set_cursor_image(scp);
2685 	sc_draw_cursor_image(scp);
2686     }
2687 }
2688 
2689 void
2690 sc_change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2691 {
2692     sc_softc_t *sc;
2693     struct tty *tp;
2694     int s;
2695     int i;
2696 
2697     s = spltty();
2698     if ((flags != -1) && (flags & CONS_LOCAL_CURSOR)) {
2699 	/* local (per vty) change */
2700 	change_cursor_shape(scp, flags, base, height);
2701 	splx(s);
2702 	return;
2703     }
2704 
2705     /* global change */
2706     sc = scp->sc;
2707     if (base >= 0)
2708 	sc->curs_attr.base = base;
2709     if (height >= 0)
2710 	sc->curs_attr.height = height;
2711     if (flags != -1) {
2712 	if (flags & CONS_RESET_CURSOR)
2713 	    sc->curs_attr = sc->dflt_curs_attr;
2714 	else
2715 	    sc->curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2716     }
2717 
2718     for (i = sc->first_vty; i < sc->first_vty + sc->vtys; ++i) {
2719 	if ((tp = SC_DEV(sc, i)) == NULL)
2720 	    continue;
2721 	if ((scp = sc_get_stat(tp)) == NULL)
2722 	    continue;
2723 	scp->dflt_curs_attr = sc->curs_attr;
2724 	change_cursor_shape(scp, CONS_RESET_CURSOR, -1, -1);
2725     }
2726     splx(s);
2727 }
2728 
2729 static void
2730 scinit(int unit, int flags)
2731 {
2732 
2733     /*
2734      * When syscons is being initialized as the kernel console, malloc()
2735      * is not yet functional, because various kernel structures has not been
2736      * fully initialized yet.  Therefore, we need to declare the following
2737      * static buffers for the console.  This is less than ideal,
2738      * but is necessry evil for the time being.  XXX
2739      */
2740 #ifdef PC98
2741     static u_short sc_buffer[ROW*COL*2];/* XXX */
2742 #else
2743     static u_short sc_buffer[ROW*COL];	/* XXX */
2744 #endif
2745 #ifndef SC_NO_FONT_LOADING
2746     static u_char font_8[256*8];
2747     static u_char font_14[256*14];
2748     static u_char font_16[256*16];
2749 #endif
2750 
2751     sc_softc_t *sc;
2752     scr_stat *scp;
2753     video_adapter_t *adp;
2754     int col;
2755     int row;
2756     int i;
2757 
2758     /* one time initialization */
2759     if (init_done == COLD)
2760 	sc_get_bios_values(&bios_value);
2761     init_done = WARM;
2762 
2763     /*
2764      * Allocate resources.  Even if we are being called for the second
2765      * time, we must allocate them again, because they might have
2766      * disappeared...
2767      */
2768     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2769     if ((sc->flags & SC_INIT_DONE) == 0)
2770 	SC_VIDEO_LOCKINIT(sc);
2771 
2772     adp = NULL;
2773     if (sc->adapter >= 0) {
2774 	vid_release(sc->adp, (void *)&sc->adapter);
2775 	adp = sc->adp;
2776 	sc->adp = NULL;
2777     }
2778     if (sc->keyboard >= 0) {
2779 	DPRINTF(5, ("sc%d: releasing kbd%d\n", unit, sc->keyboard));
2780 	i = kbd_release(sc->kbd, (void *)&sc->keyboard);
2781 	DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
2782 	if (sc->kbd != NULL) {
2783 	    DPRINTF(5, ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
2784 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2785 	}
2786 	sc->kbd = NULL;
2787     }
2788     sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
2789     sc->adp = vid_get_adapter(sc->adapter);
2790     /* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
2791 
2792     sc->keyboard = sc_allocate_keyboard(sc, unit);
2793     DPRINTF(1, ("sc%d: keyboard %d\n", unit, sc->keyboard));
2794 
2795     sc->kbd = kbd_get_keyboard(sc->keyboard);
2796     if (sc->kbd != NULL) {
2797 	DPRINTF(1, ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n",
2798 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2799     }
2800 
2801     if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
2802 
2803 	sc->initial_mode = sc->adp->va_initial_mode;
2804 
2805 #ifndef SC_NO_FONT_LOADING
2806 	if (flags & SC_KERNEL_CONSOLE) {
2807 	    sc->font_8 = font_8;
2808 	    sc->font_14 = font_14;
2809 	    sc->font_16 = font_16;
2810 	} else if (sc->font_8 == NULL) {
2811 	    /* assert(sc_malloc) */
2812 	    sc->font_8 = malloc(sizeof(font_8), M_DEVBUF, M_WAITOK);
2813 	    sc->font_14 = malloc(sizeof(font_14), M_DEVBUF, M_WAITOK);
2814 	    sc->font_16 = malloc(sizeof(font_16), M_DEVBUF, M_WAITOK);
2815 	}
2816 #endif
2817 
2818 	/* extract the hardware cursor location and hide the cursor for now */
2819 	vidd_read_hw_cursor(sc->adp, &col, &row);
2820 	vidd_set_hw_cursor(sc->adp, -1, -1);
2821 
2822 	/* set up the first console */
2823 	sc->first_vty = unit*MAXCONS;
2824 	sc->vtys = MAXCONS;		/* XXX: should be configurable */
2825 	if (flags & SC_KERNEL_CONSOLE) {
2826 	    /*
2827 	     * Set up devs structure but don't use it yet, calling make_dev()
2828 	     * might panic kernel.  Wait for sc_attach_unit() to actually
2829 	     * create the devices.
2830 	     */
2831 	    sc->dev = main_devs;
2832 	    scp = &main_console;
2833 	    init_scp(sc, sc->first_vty, scp);
2834 	    sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize, scp->ysize,
2835 			(void *)sc_buffer, FALSE);
2836 
2837 	    /* move cursors to the initial positions */
2838 	    if (col >= scp->xsize)
2839 		col = 0;
2840 	    if (row >= scp->ysize)
2841 		row = scp->ysize - 1;
2842 	    scp->xpos = col;
2843 	    scp->ypos = row;
2844 	    scp->cursor_pos = scp->cursor_oldpos = row*scp->xsize + col;
2845 
2846 	    if (sc_init_emulator(scp, SC_DFLT_TERM))
2847 		sc_init_emulator(scp, "*");
2848 	    (*scp->tsw->te_default_attr)(scp,
2849 					 user_default.std_color,
2850 					 user_default.rev_color);
2851 	} else {
2852 	    /* assert(sc_malloc) */
2853 	    sc->dev = malloc(sizeof(struct tty *)*sc->vtys, M_DEVBUF,
2854 	        M_WAITOK|M_ZERO);
2855 	    sc->dev[0] = sc_alloc_tty(0, unit * MAXCONS);
2856 	    scp = alloc_scp(sc, sc->first_vty);
2857 	    SC_STAT(sc->dev[0]) = scp;
2858 	}
2859 	sc->cur_scp = scp;
2860 
2861 #ifndef __sparc64__
2862 	/* copy screen to temporary buffer */
2863 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2864 		    (void *)scp->sc->adp->va_window, FALSE);
2865 	if (ISTEXTSC(scp))
2866 	    sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0, scp->xsize*scp->ysize);
2867 #endif
2868 
2869 	if (bios_value.cursor_end < scp->font_size)
2870 	    sc->dflt_curs_attr.base = scp->font_size -
2871 					  bios_value.cursor_end - 1;
2872 	else
2873 	    sc->dflt_curs_attr.base = 0;
2874 	i = bios_value.cursor_end - bios_value.cursor_start + 1;
2875 	sc->dflt_curs_attr.height = imin(i, scp->font_size);
2876 	sc->dflt_curs_attr.flags = 0;
2877 	sc->curs_attr = sc->dflt_curs_attr;
2878 	scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
2879 
2880 #ifndef SC_NO_SYSMOUSE
2881 	sc_mouse_move(scp, scp->xpixel/2, scp->ypixel/2);
2882 #endif
2883 	if (!ISGRAPHSC(scp)) {
2884     	    sc_set_cursor_image(scp);
2885     	    sc_draw_cursor_image(scp);
2886 	}
2887 
2888 	/* save font and palette */
2889 #ifndef SC_NO_FONT_LOADING
2890 	sc->fonts_loaded = 0;
2891 	if (ISFONTAVAIL(sc->adp->va_flags)) {
2892 #ifdef SC_DFLT_FONT
2893 	    bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
2894 	    bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
2895 	    bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
2896 	    sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
2897 	    if (scp->font_size < 14) {
2898 		sc_load_font(scp, 0, 8, 8, sc->font_8, 0, 256);
2899 	    } else if (scp->font_size >= 16) {
2900 		sc_load_font(scp, 0, 16, 8, sc->font_16, 0, 256);
2901 	    } else {
2902 		sc_load_font(scp, 0, 14, 8, sc->font_14, 0, 256);
2903 	    }
2904 #else /* !SC_DFLT_FONT */
2905 	    if (scp->font_size < 14) {
2906 		sc_save_font(scp, 0, 8, 8, sc->font_8, 0, 256);
2907 		sc->fonts_loaded = FONT_8;
2908 	    } else if (scp->font_size >= 16) {
2909 		sc_save_font(scp, 0, 16, 8, sc->font_16, 0, 256);
2910 		sc->fonts_loaded = FONT_16;
2911 	    } else {
2912 		sc_save_font(scp, 0, 14, 8, sc->font_14, 0, 256);
2913 		sc->fonts_loaded = FONT_14;
2914 	    }
2915 #endif /* SC_DFLT_FONT */
2916 	    /* FONT KLUDGE: always use the font page #0. XXX */
2917 	    sc_show_font(scp, 0);
2918 	}
2919 #endif /* !SC_NO_FONT_LOADING */
2920 
2921 #ifndef SC_NO_PALETTE_LOADING
2922 	vidd_save_palette(sc->adp, sc->palette);
2923 #ifdef SC_PIXEL_MODE
2924 	for (i = 0; i < sizeof(sc->palette2); i++)
2925 		sc->palette2[i] = i / 3;
2926 #endif
2927 #endif
2928 
2929 #ifdef DEV_SPLASH
2930 	if (!(sc->flags & SC_SPLASH_SCRN)) {
2931 	    /* we are ready to put up the splash image! */
2932 	    splash_init(sc->adp, scsplash_callback, sc);
2933 	    sc->flags |= SC_SPLASH_SCRN;
2934 	}
2935 #endif
2936     }
2937 
2938     /* the rest is not necessary, if we have done it once */
2939     if (sc->flags & SC_INIT_DONE)
2940 	return;
2941 
2942     /* initialize mapscrn arrays to a one to one map */
2943     for (i = 0; i < sizeof(sc->scr_map); i++)
2944 	sc->scr_map[i] = sc->scr_rmap[i] = i;
2945 #ifdef PC98
2946     sc->scr_map[0x5c] = (u_char)0xfc;	/* for backslash */
2947 #endif
2948 
2949     sc->flags |= SC_INIT_DONE;
2950 }
2951 
2952 static void
2953 scterm(int unit, int flags)
2954 {
2955     sc_softc_t *sc;
2956     scr_stat *scp;
2957 
2958     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2959     if (sc == NULL)
2960 	return;			/* shouldn't happen */
2961 
2962 #ifdef DEV_SPLASH
2963     /* this console is no longer available for the splash screen */
2964     if (sc->flags & SC_SPLASH_SCRN) {
2965 	splash_term(sc->adp);
2966 	sc->flags &= ~SC_SPLASH_SCRN;
2967     }
2968 #endif
2969 
2970 #if 0 /* XXX */
2971     /* move the hardware cursor to the upper-left corner */
2972     vidd_set_hw_cursor(sc->adp, 0, 0);
2973 #endif
2974 
2975     /* release the keyboard and the video card */
2976     if (sc->keyboard >= 0)
2977 	kbd_release(sc->kbd, &sc->keyboard);
2978     if (sc->adapter >= 0)
2979 	vid_release(sc->adp, &sc->adapter);
2980 
2981     /* stop the terminal emulator, if any */
2982     scp = sc_get_stat(sc->dev[0]);
2983     if (scp->tsw)
2984 	(*scp->tsw->te_term)(scp, &scp->ts);
2985     if (scp->ts != NULL)
2986 	free(scp->ts, M_DEVBUF);
2987     mtx_destroy(&scp->scr_lock);
2988 
2989     /* clear the structure */
2990     if (!(flags & SC_KERNEL_CONSOLE)) {
2991 	/* XXX: We need delete_dev() for this */
2992 	free(sc->dev, M_DEVBUF);
2993 #if 0
2994 	/* XXX: We need a ttyunregister for this */
2995 	free(sc->tty, M_DEVBUF);
2996 #endif
2997 #ifndef SC_NO_FONT_LOADING
2998 	free(sc->font_8, M_DEVBUF);
2999 	free(sc->font_14, M_DEVBUF);
3000 	free(sc->font_16, M_DEVBUF);
3001 #endif
3002 	/* XXX vtb, history */
3003     }
3004     bzero(sc, sizeof(*sc));
3005     sc->keyboard = -1;
3006     sc->adapter = -1;
3007 }
3008 
3009 static void
3010 scshutdown(void *arg, int howto)
3011 {
3012     /* assert(sc_console != NULL) */
3013 
3014     sc_touch_scrn_saver();
3015     if (!cold && sc_console
3016 	&& sc_console->sc->cur_scp->smode.mode == VT_AUTO
3017 	&& sc_console->smode.mode == VT_AUTO)
3018 	sc_switch_scr(sc_console->sc, sc_console->index);
3019     shutdown_in_progress = TRUE;
3020 }
3021 
3022 int
3023 sc_clean_up(scr_stat *scp)
3024 {
3025 #ifdef DEV_SPLASH
3026     int error;
3027 #endif
3028 
3029     if (scp->sc->flags & SC_SCRN_BLANKED) {
3030 	sc_touch_scrn_saver();
3031 #ifdef DEV_SPLASH
3032 	if ((error = wait_scrn_saver_stop(scp->sc)))
3033 	    return error;
3034 #endif
3035     }
3036     scp->status |= MOUSE_HIDDEN;
3037     sc_remove_mouse_image(scp);
3038     sc_remove_cutmarking(scp);
3039     return 0;
3040 }
3041 
3042 void
3043 sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
3044 {
3045     sc_vtb_t new;
3046     sc_vtb_t old;
3047 
3048     old = scp->vtb;
3049     sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
3050     if (!discard && (old.vtb_flags & VTB_VALID)) {
3051 	/* retain the current cursor position and buffer contants */
3052 	scp->cursor_oldpos = scp->cursor_pos;
3053 	/*
3054 	 * This works only if the old buffer has the same size as or larger
3055 	 * than the new one. XXX
3056 	 */
3057 	sc_vtb_copy(&old, 0, &new, 0, scp->xsize*scp->ysize);
3058 	scp->vtb = new;
3059     } else {
3060 	scp->vtb = new;
3061 	sc_vtb_destroy(&old);
3062     }
3063 
3064 #ifndef SC_NO_SYSMOUSE
3065     /* move the mouse cursor at the center of the screen */
3066     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
3067 #endif
3068 }
3069 
3070 static scr_stat
3071 *alloc_scp(sc_softc_t *sc, int vty)
3072 {
3073     scr_stat *scp;
3074 
3075     /* assert(sc_malloc) */
3076 
3077     scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
3078     init_scp(sc, vty, scp);
3079 
3080     sc_alloc_scr_buffer(scp, TRUE, TRUE);
3081     if (sc_init_emulator(scp, SC_DFLT_TERM))
3082 	sc_init_emulator(scp, "*");
3083 
3084 #ifndef SC_NO_CUTPASTE
3085     sc_alloc_cut_buffer(scp, TRUE);
3086 #endif
3087 
3088 #ifndef SC_NO_HISTORY
3089     sc_alloc_history_buffer(scp, 0, 0, TRUE);
3090 #endif
3091 
3092     return scp;
3093 }
3094 
3095 static void
3096 init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
3097 {
3098     video_info_t info;
3099 
3100     bzero(scp, sizeof(*scp));
3101 
3102     scp->index = vty;
3103     scp->sc = sc;
3104     scp->status = 0;
3105     scp->mode = sc->initial_mode;
3106     vidd_get_info(sc->adp, scp->mode, &info);
3107     if (info.vi_flags & V_INFO_GRAPHICS) {
3108 	scp->status |= GRAPHICS_MODE;
3109 	scp->xpixel = info.vi_width;
3110 	scp->ypixel = info.vi_height;
3111 	scp->xsize = info.vi_width/info.vi_cwidth;
3112 	scp->ysize = info.vi_height/info.vi_cheight;
3113 	scp->font_size = 0;
3114 	scp->font = NULL;
3115     } else {
3116 	scp->xsize = info.vi_width;
3117 	scp->ysize = info.vi_height;
3118 	scp->xpixel = scp->xsize*info.vi_cwidth;
3119 	scp->ypixel = scp->ysize*info.vi_cheight;
3120     }
3121 
3122     scp->font_size = info.vi_cheight;
3123     scp->font_width = info.vi_cwidth;
3124 #ifndef SC_NO_FONT_LOADING
3125     if (info.vi_cheight < 14)
3126 	scp->font = sc->font_8;
3127     else if (info.vi_cheight >= 16)
3128 	scp->font = sc->font_16;
3129     else
3130 	scp->font = sc->font_14;
3131 #else
3132     scp->font = NULL;
3133 #endif
3134 
3135     sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
3136 #ifndef __sparc64__
3137     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
3138 #endif
3139     scp->xoff = scp->yoff = 0;
3140     scp->xpos = scp->ypos = 0;
3141     scp->start = scp->xsize * scp->ysize - 1;
3142     scp->end = 0;
3143     scp->tsw = NULL;
3144     scp->ts = NULL;
3145     scp->rndr = NULL;
3146     scp->border = (SC_NORM_ATTR >> 4) & 0x0f;
3147     scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
3148     scp->mouse_cut_start = scp->xsize*scp->ysize;
3149     scp->mouse_cut_end = -1;
3150     scp->mouse_signal = 0;
3151     scp->mouse_pid = 0;
3152     scp->mouse_proc = NULL;
3153     scp->kbd_mode = K_XLATE;
3154     scp->bell_pitch = bios_value.bell_pitch;
3155     scp->bell_duration = BELL_DURATION;
3156     scp->status |= (bios_value.shift_state & NLKED);
3157     scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
3158     scp->pid = 0;
3159     scp->proc = NULL;
3160     scp->smode.mode = VT_AUTO;
3161     scp->history = NULL;
3162     scp->history_pos = 0;
3163     scp->history_size = 0;
3164 
3165     mtx_init(&scp->scr_lock, "scrlock", NULL, MTX_SPIN);
3166 }
3167 
3168 int
3169 sc_init_emulator(scr_stat *scp, char *name)
3170 {
3171     sc_term_sw_t *sw;
3172     sc_rndr_sw_t *rndr;
3173     void *p;
3174     int error;
3175 
3176     if (name == NULL)	/* if no name is given, use the current emulator */
3177 	sw = scp->tsw;
3178     else		/* ...otherwise find the named emulator */
3179 	sw = sc_term_match(name);
3180     if (sw == NULL)
3181 	return EINVAL;
3182 
3183     rndr = NULL;
3184     if (strcmp(sw->te_renderer, "*") != 0) {
3185 	rndr = sc_render_match(scp, sw->te_renderer,
3186 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3187     }
3188     if (rndr == NULL) {
3189 	rndr = sc_render_match(scp, scp->sc->adp->va_name,
3190 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3191 	if (rndr == NULL)
3192 	    return ENODEV;
3193     }
3194 
3195     if (sw == scp->tsw) {
3196 	error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
3197 	scp->rndr = rndr;
3198 	scp->rndr->init(scp);
3199 	sc_clear_screen(scp);
3200 	/* assert(error == 0); */
3201 	return error;
3202     }
3203 
3204     if (sc_malloc && (sw->te_size > 0))
3205 	p = malloc(sw->te_size, M_DEVBUF, M_NOWAIT);
3206     else
3207 	p = NULL;
3208     error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
3209     if (error)
3210 	return error;
3211 
3212     if (scp->tsw)
3213 	(*scp->tsw->te_term)(scp, &scp->ts);
3214     if (scp->ts != NULL)
3215 	free(scp->ts, M_DEVBUF);
3216     scp->tsw = sw;
3217     scp->ts = p;
3218     scp->rndr = rndr;
3219     scp->rndr->init(scp);
3220 
3221     /* XXX */
3222     (*sw->te_default_attr)(scp, user_default.std_color, user_default.rev_color);
3223     sc_clear_screen(scp);
3224 
3225     return 0;
3226 }
3227 
3228 /*
3229  * scgetc(flags) - get character from keyboard.
3230  * If flags & SCGETC_CN, then avoid harmful side effects.
3231  * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
3232  * return NOKEY if there is nothing there.
3233  */
3234 static u_int
3235 scgetc(sc_softc_t *sc, u_int flags)
3236 {
3237     scr_stat *scp;
3238 #ifndef SC_NO_HISTORY
3239     struct tty *tp;
3240 #endif
3241     u_int c;
3242     int this_scr;
3243     int f;
3244     int i;
3245 
3246     if (sc->kbd == NULL)
3247 	return NOKEY;
3248 
3249 next_code:
3250 #if 1
3251     /* I don't like this, but... XXX */
3252     if (flags & SCGETC_CN)
3253 	sccnupdate(sc->cur_scp);
3254 #endif
3255     scp = sc->cur_scp;
3256     /* first see if there is something in the keyboard port */
3257     for (;;) {
3258 	c = kbdd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
3259 	if (c == ERRKEY) {
3260 	    if (!(flags & SCGETC_CN))
3261 		sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3262 	} else if (c == NOKEY)
3263 	    return c;
3264 	else
3265 	    break;
3266     }
3267 
3268     /* make screensaver happy */
3269     if (!(c & RELKEY))
3270 	sc_touch_scrn_saver();
3271 
3272     if (!(flags & SCGETC_CN))
3273 	random_harvest(&c, sizeof(c), 1, 0, RANDOM_KEYBOARD);
3274 
3275     if (scp->kbd_mode != K_XLATE)
3276 	return KEYCHAR(c);
3277 
3278     /* if scroll-lock pressed allow history browsing */
3279     if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
3280 
3281 	scp->status &= ~CURSOR_ENABLED;
3282 	sc_remove_cursor_image(scp);
3283 
3284 #ifndef SC_NO_HISTORY
3285 	if (!(scp->status & BUFFER_SAVED)) {
3286 	    scp->status |= BUFFER_SAVED;
3287 	    sc_hist_save(scp);
3288 	}
3289 	switch (c) {
3290 	/* FIXME: key codes */
3291 	case SPCLKEY | FKEY | F(49):  /* home key */
3292 	    sc_remove_cutmarking(scp);
3293 	    sc_hist_home(scp);
3294 	    goto next_code;
3295 
3296 	case SPCLKEY | FKEY | F(57):  /* end key */
3297 	    sc_remove_cutmarking(scp);
3298 	    sc_hist_end(scp);
3299 	    goto next_code;
3300 
3301 	case SPCLKEY | FKEY | F(50):  /* up arrow key */
3302 	    sc_remove_cutmarking(scp);
3303 	    if (sc_hist_up_line(scp))
3304 		if (!(flags & SCGETC_CN))
3305 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3306 	    goto next_code;
3307 
3308 	case SPCLKEY | FKEY | F(58):  /* down arrow key */
3309 	    sc_remove_cutmarking(scp);
3310 	    if (sc_hist_down_line(scp))
3311 		if (!(flags & SCGETC_CN))
3312 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3313 	    goto next_code;
3314 
3315 	case SPCLKEY | FKEY | F(51):  /* page up key */
3316 	    sc_remove_cutmarking(scp);
3317 	    for (i=0; i<scp->ysize; i++)
3318 	    if (sc_hist_up_line(scp)) {
3319 		if (!(flags & SCGETC_CN))
3320 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3321 		break;
3322 	    }
3323 	    goto next_code;
3324 
3325 	case SPCLKEY | FKEY | F(59):  /* page down key */
3326 	    sc_remove_cutmarking(scp);
3327 	    for (i=0; i<scp->ysize; i++)
3328 	    if (sc_hist_down_line(scp)) {
3329 		if (!(flags & SCGETC_CN))
3330 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3331 		break;
3332 	    }
3333 	    goto next_code;
3334 	}
3335 #endif /* SC_NO_HISTORY */
3336     }
3337 
3338     /*
3339      * Process and consume special keys here.  Return a plain char code
3340      * or a char code with the META flag or a function key code.
3341      */
3342     if (c & RELKEY) {
3343 	/* key released */
3344 	/* goto next_code */
3345     } else {
3346 	/* key pressed */
3347 	if (c & SPCLKEY) {
3348 	    c &= ~SPCLKEY;
3349 	    switch (KEYCHAR(c)) {
3350 	    /* LOCKING KEYS */
3351 	    case NLK: case CLK: case ALK:
3352 		break;
3353 	    case SLK:
3354 		(void)kbdd_ioctl(sc->kbd, KDGKBSTATE, (caddr_t)&f);
3355 		if (f & SLKED) {
3356 		    scp->status |= SLKED;
3357 		} else {
3358 		    if (scp->status & SLKED) {
3359 			scp->status &= ~SLKED;
3360 #ifndef SC_NO_HISTORY
3361 			if (scp->status & BUFFER_SAVED) {
3362 			    if (!sc_hist_restore(scp))
3363 				sc_remove_cutmarking(scp);
3364 			    scp->status &= ~BUFFER_SAVED;
3365 			    scp->status |= CURSOR_ENABLED;
3366 			    sc_draw_cursor_image(scp);
3367 			}
3368 			tp = SC_DEV(sc, scp->index);
3369 			if (!kdb_active && tty_opened(tp))
3370 			    sctty_outwakeup(tp);
3371 #endif
3372 		    }
3373 		}
3374 		break;
3375 
3376 	    case PASTE:
3377 #ifndef SC_NO_CUTPASTE
3378 		sc_mouse_paste(scp);
3379 #endif
3380 		break;
3381 
3382 	    /* NON-LOCKING KEYS */
3383 	    case NOP:
3384 	    case LSH:  case RSH:  case LCTR: case RCTR:
3385 	    case LALT: case RALT: case ASH:  case META:
3386 		break;
3387 
3388 	    case BTAB:
3389 		if (!(sc->flags & SC_SCRN_BLANKED))
3390 		    return c;
3391 		break;
3392 
3393 	    case SPSC:
3394 #ifdef DEV_SPLASH
3395 		/* force activatation/deactivation of the screen saver */
3396 		if (!(sc->flags & SC_SCRN_BLANKED)) {
3397 		    run_scrn_saver = TRUE;
3398 		    sc->scrn_time_stamp -= scrn_blank_time;
3399 		}
3400 		if (cold) {
3401 		    /*
3402 		     * While devices are being probed, the screen saver need
3403 		     * to be invoked explictly. XXX
3404 		     */
3405 		    if (sc->flags & SC_SCRN_BLANKED) {
3406 			scsplash_stick(FALSE);
3407 			stop_scrn_saver(sc, current_saver);
3408 		    } else {
3409 			if (!ISGRAPHSC(scp)) {
3410 			    scsplash_stick(TRUE);
3411 			    (*current_saver)(sc, TRUE);
3412 			}
3413 		    }
3414 		}
3415 #endif /* DEV_SPLASH */
3416 		break;
3417 
3418 	    case RBT:
3419 #ifndef SC_DISABLE_REBOOT
3420 		if (enable_reboot)
3421 			shutdown_nice(0);
3422 #endif
3423 		break;
3424 
3425 	    case HALT:
3426 #ifndef SC_DISABLE_REBOOT
3427 		if (enable_reboot)
3428 			shutdown_nice(RB_HALT);
3429 #endif
3430 		break;
3431 
3432 	    case PDWN:
3433 #ifndef SC_DISABLE_REBOOT
3434 		if (enable_reboot)
3435 			shutdown_nice(RB_HALT|RB_POWEROFF);
3436 #endif
3437 		break;
3438 
3439 	    case SUSP:
3440 		power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
3441 		break;
3442 	    case STBY:
3443 		power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
3444 		break;
3445 
3446 	    case DBG:
3447 #ifndef SC_DISABLE_KDBKEY
3448 		if (enable_kdbkey)
3449 			kdb_enter(KDB_WHY_BREAK, "manual escape to debugger");
3450 #endif
3451 		break;
3452 
3453 	    case PNC:
3454 		if (enable_panic_key)
3455 			panic("Forced by the panic key");
3456 		break;
3457 
3458 	    case NEXT:
3459 		this_scr = scp->index;
3460 		for (i = (this_scr - sc->first_vty + 1)%sc->vtys;
3461 			sc->first_vty + i != this_scr;
3462 			i = (i + 1)%sc->vtys) {
3463 		    struct tty *tp = SC_DEV(sc, sc->first_vty + i);
3464 		    if (tty_opened(tp)) {
3465 			sc_switch_scr(scp->sc, sc->first_vty + i);
3466 			break;
3467 		    }
3468 		}
3469 		break;
3470 
3471 	    case PREV:
3472 		this_scr = scp->index;
3473 		for (i = (this_scr - sc->first_vty + sc->vtys - 1)%sc->vtys;
3474 			sc->first_vty + i != this_scr;
3475 			i = (i + sc->vtys - 1)%sc->vtys) {
3476 		    struct tty *tp = SC_DEV(sc, sc->first_vty + i);
3477 		    if (tty_opened(tp)) {
3478 			sc_switch_scr(scp->sc, sc->first_vty + i);
3479 			break;
3480 		    }
3481 		}
3482 		break;
3483 
3484 	    default:
3485 		if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
3486 		    sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
3487 		    break;
3488 		}
3489 		/* assert(c & FKEY) */
3490 		if (!(sc->flags & SC_SCRN_BLANKED))
3491 		    return c;
3492 		break;
3493 	    }
3494 	    /* goto next_code */
3495 	} else {
3496 	    /* regular keys (maybe MKEY is set) */
3497 	    if (!(sc->flags & SC_SCRN_BLANKED))
3498 		return c;
3499 	}
3500     }
3501 
3502     goto next_code;
3503 }
3504 
3505 static int
3506 sctty_mmap(struct tty *tp, vm_ooffset_t offset, vm_paddr_t *paddr,
3507     int nprot, vm_memattr_t *memattr)
3508 {
3509     scr_stat *scp;
3510 
3511     scp = sc_get_stat(tp);
3512     if (scp != scp->sc->cur_scp)
3513 	return -1;
3514     return vidd_mmap(scp->sc->adp, offset, paddr, nprot, memattr);
3515 }
3516 
3517 static int
3518 save_kbd_state(scr_stat *scp)
3519 {
3520     int state;
3521     int error;
3522 
3523     error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3524     if (error == ENOIOCTL)
3525 	error = ENODEV;
3526     if (error == 0) {
3527 	scp->status &= ~LOCK_MASK;
3528 	scp->status |= state;
3529     }
3530     return error;
3531 }
3532 
3533 static int
3534 update_kbd_state(scr_stat *scp, int new_bits, int mask)
3535 {
3536     int state;
3537     int error;
3538 
3539     if (mask != LOCK_MASK) {
3540 	error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3541 	if (error == ENOIOCTL)
3542 	    error = ENODEV;
3543 	if (error)
3544 	    return error;
3545 	state &= ~mask;
3546 	state |= new_bits & mask;
3547     } else {
3548 	state = new_bits & LOCK_MASK;
3549     }
3550     error = kbdd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
3551     if (error == ENOIOCTL)
3552 	error = ENODEV;
3553     return error;
3554 }
3555 
3556 static int
3557 update_kbd_leds(scr_stat *scp, int which)
3558 {
3559     int error;
3560 
3561     which &= LOCK_MASK;
3562     error = kbdd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
3563     if (error == ENOIOCTL)
3564 	error = ENODEV;
3565     return error;
3566 }
3567 
3568 int
3569 set_mode(scr_stat *scp)
3570 {
3571     video_info_t info;
3572 
3573     /* reject unsupported mode */
3574     if (vidd_get_info(scp->sc->adp, scp->mode, &info))
3575 	return 1;
3576 
3577     /* if this vty is not currently showing, do nothing */
3578     if (scp != scp->sc->cur_scp)
3579 	return 0;
3580 
3581     /* setup video hardware for the given mode */
3582     vidd_set_mode(scp->sc->adp, scp->mode);
3583     scp->rndr->init(scp);
3584 #ifndef __sparc64__
3585     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3586 		(void *)scp->sc->adp->va_window, FALSE);
3587 #endif
3588 
3589 #ifndef SC_NO_FONT_LOADING
3590     /* load appropriate font */
3591     if (!(scp->status & GRAPHICS_MODE)) {
3592 	if (!(scp->status & PIXEL_MODE) && ISFONTAVAIL(scp->sc->adp->va_flags)) {
3593 	    if (scp->font_size < 14) {
3594 		if (scp->sc->fonts_loaded & FONT_8)
3595 		    sc_load_font(scp, 0, 8, 8, scp->sc->font_8, 0, 256);
3596 	    } else if (scp->font_size >= 16) {
3597 		if (scp->sc->fonts_loaded & FONT_16)
3598 		    sc_load_font(scp, 0, 16, 8, scp->sc->font_16, 0, 256);
3599 	    } else {
3600 		if (scp->sc->fonts_loaded & FONT_14)
3601 		    sc_load_font(scp, 0, 14, 8, scp->sc->font_14, 0, 256);
3602 	    }
3603 	    /*
3604 	     * FONT KLUDGE:
3605 	     * This is an interim kludge to display correct font.
3606 	     * Always use the font page #0 on the video plane 2.
3607 	     * Somehow we cannot show the font in other font pages on
3608 	     * some video cards... XXX
3609 	     */
3610 	    sc_show_font(scp, 0);
3611 	}
3612 	mark_all(scp);
3613     }
3614 #endif /* !SC_NO_FONT_LOADING */
3615 
3616     sc_set_border(scp, scp->border);
3617     sc_set_cursor_image(scp);
3618 
3619     return 0;
3620 }
3621 
3622 void
3623 sc_set_border(scr_stat *scp, int color)
3624 {
3625     SC_VIDEO_LOCK(scp->sc);
3626     (*scp->rndr->draw_border)(scp, color);
3627     SC_VIDEO_UNLOCK(scp->sc);
3628 }
3629 
3630 #ifndef SC_NO_FONT_LOADING
3631 void
3632 sc_load_font(scr_stat *scp, int page, int size, int width, u_char *buf,
3633 	     int base, int count)
3634 {
3635     sc_softc_t *sc;
3636 
3637     sc = scp->sc;
3638     sc->font_loading_in_progress = TRUE;
3639     vidd_load_font(sc->adp, page, size, width, buf, base, count);
3640     sc->font_loading_in_progress = FALSE;
3641 }
3642 
3643 void
3644 sc_save_font(scr_stat *scp, int page, int size, int width, u_char *buf,
3645 	     int base, int count)
3646 {
3647     sc_softc_t *sc;
3648 
3649     sc = scp->sc;
3650     sc->font_loading_in_progress = TRUE;
3651     vidd_save_font(sc->adp, page, size, width, buf, base, count);
3652     sc->font_loading_in_progress = FALSE;
3653 }
3654 
3655 void
3656 sc_show_font(scr_stat *scp, int page)
3657 {
3658     vidd_show_font(scp->sc->adp, page);
3659 }
3660 #endif /* !SC_NO_FONT_LOADING */
3661 
3662 void
3663 sc_paste(scr_stat *scp, const u_char *p, int count)
3664 {
3665     struct tty *tp;
3666     u_char *rmap;
3667 
3668     tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
3669     if (!tty_opened(tp))
3670 	return;
3671     rmap = scp->sc->scr_rmap;
3672     for (; count > 0; --count)
3673 	ttydisc_rint(tp, rmap[*p++], 0);
3674     ttydisc_rint_done(tp);
3675 }
3676 
3677 void
3678 sc_respond(scr_stat *scp, const u_char *p, int count, int wakeup)
3679 {
3680     struct tty *tp;
3681 
3682     tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
3683     if (!tty_opened(tp))
3684 	return;
3685     ttydisc_rint_simple(tp, p, count);
3686     if (wakeup) {
3687 	/* XXX: we can't always call ttydisc_rint_done() here! */
3688 	ttydisc_rint_done(tp);
3689     }
3690 }
3691 
3692 void
3693 sc_bell(scr_stat *scp, int pitch, int duration)
3694 {
3695     if (cold || shutdown_in_progress || !enable_bell)
3696 	return;
3697 
3698     if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
3699 	return;
3700 
3701     if (scp->sc->flags & SC_VISUAL_BELL) {
3702 	if (scp->sc->blink_in_progress)
3703 	    return;
3704 	scp->sc->blink_in_progress = 3;
3705 	if (scp != scp->sc->cur_scp)
3706 	    scp->sc->blink_in_progress += 2;
3707 	blink_screen(scp->sc->cur_scp);
3708     } else if (duration != 0 && pitch != 0) {
3709 	if (scp != scp->sc->cur_scp)
3710 	    pitch *= 2;
3711 	sysbeep(1193182 / pitch, duration);
3712     }
3713 }
3714 
3715 static void
3716 blink_screen(void *arg)
3717 {
3718     scr_stat *scp = arg;
3719     struct tty *tp;
3720 
3721     if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
3722 	scp->sc->blink_in_progress = 0;
3723     	mark_all(scp);
3724 	tp = SC_DEV(scp->sc, scp->index);
3725 	if (tty_opened(tp))
3726 	    sctty_outwakeup(tp);
3727 	if (scp->sc->delayed_next_scr)
3728 	    sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
3729     }
3730     else {
3731 	(*scp->rndr->draw)(scp, 0, scp->xsize*scp->ysize,
3732 			   scp->sc->blink_in_progress & 1);
3733 	scp->sc->blink_in_progress--;
3734 	timeout(blink_screen, scp, hz / 10);
3735     }
3736 }
3737 
3738 /*
3739  * Until sc_attach_unit() gets called no dev structures will be available
3740  * to store the per-screen current status.  This is the case when the
3741  * kernel is initially booting and needs access to its console.  During
3742  * this early phase of booting the console's current status is kept in
3743  * one statically defined scr_stat structure, and any pointers to the
3744  * dev structures will be NULL.
3745  */
3746 
3747 static scr_stat *
3748 sc_get_stat(struct tty *tp)
3749 {
3750 	if (tp == NULL)
3751 		return (&main_console);
3752 	return (SC_STAT(tp));
3753 }
3754 
3755 /*
3756  * Allocate active keyboard. Try to allocate "kbdmux" keyboard first, and,
3757  * if found, add all non-busy keyboards to "kbdmux". Otherwise look for
3758  * any keyboard.
3759  */
3760 
3761 static int
3762 sc_allocate_keyboard(sc_softc_t *sc, int unit)
3763 {
3764 	int		 idx0, idx;
3765 	keyboard_t	*k0, *k;
3766 	keyboard_info_t	 ki;
3767 
3768 	idx0 = kbd_allocate("kbdmux", -1, (void *)&sc->keyboard, sckbdevent, sc);
3769 	if (idx0 != -1) {
3770 		k0 = kbd_get_keyboard(idx0);
3771 
3772 		for (idx = kbd_find_keyboard2("*", -1, 0);
3773 		     idx != -1;
3774 		     idx = kbd_find_keyboard2("*", -1, idx + 1)) {
3775 			k = kbd_get_keyboard(idx);
3776 
3777 			if (idx == idx0 || KBD_IS_BUSY(k))
3778 				continue;
3779 
3780 			bzero(&ki, sizeof(ki));
3781 			strcpy(ki.kb_name, k->kb_name);
3782 			ki.kb_unit = k->kb_unit;
3783 
3784 			(void)kbdd_ioctl(k0, KBADDKBD, (caddr_t) &ki);
3785 		}
3786 	} else
3787 		idx0 = kbd_allocate("*", unit, (void *)&sc->keyboard, sckbdevent, sc);
3788 
3789 	return (idx0);
3790 }
3791