xref: /freebsd/sys/dev/syscons/syscons.c (revision 39ee7a7a6bdd1557b1c3532abf60d139798ac88b)
1 /*-
2  * Copyright (c) 1992-1998 Søren 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(__arm__) || defined(__mips__) || \
66 	defined(__powerpc__) || defined(__sparc64__)
67 #include <machine/sc_machdep.h>
68 #else
69 #include <machine/pc/display.h>
70 #endif
71 #if defined( __i386__) || defined(__amd64__)
72 #include <machine/psl.h>
73 #include <machine/frame.h>
74 #endif
75 #include <machine/stdarg.h>
76 
77 #include <dev/kbd/kbdreg.h>
78 #include <dev/fb/fbreg.h>
79 #include <dev/fb/splashreg.h>
80 #include <dev/syscons/syscons.h>
81 
82 #define COLD 0
83 #define WARM 1
84 
85 #define DEFAULT_BLANKTIME	(5*60)		/* 5 minutes */
86 #define MAX_BLANKTIME		(7*24*60*60)	/* 7 days!? */
87 
88 #define KEYCODE_BS		0x0e		/* "<-- Backspace" key, XXX */
89 
90 /* NULL-safe version of "tty_opened()" */
91 #define	tty_opened_ns(tp)	((tp) != NULL && tty_opened(tp))
92 
93 typedef struct default_attr {
94 	int		std_color;		/* normal hardware color */
95 	int		rev_color;		/* reverse hardware color */
96 } default_attr;
97 
98 static default_attr user_default = {
99     SC_NORM_ATTR,
100     SC_NORM_REV_ATTR,
101 };
102 
103 static	int		sc_console_unit = -1;
104 static	int		sc_saver_keyb_only = 1;
105 static  scr_stat    	*sc_console;
106 static  struct consdev	*sc_consptr;
107 static	scr_stat	main_console;
108 static	struct tty 	*main_devs[MAXCONS];
109 
110 static  char        	init_done = COLD;
111 static	int		shutdown_in_progress = FALSE;
112 static	int		suspend_in_progress = FALSE;
113 static	char		sc_malloc = FALSE;
114 
115 static	int		saver_mode = CONS_NO_SAVER; /* LKM/user saver */
116 static	int		run_scrn_saver = FALSE;	/* should run the saver? */
117 static	int		enable_bell = TRUE; /* enable beeper */
118 
119 #ifndef SC_DISABLE_REBOOT
120 static  int		enable_reboot = TRUE; /* enable keyboard reboot */
121 #endif
122 
123 #ifndef SC_DISABLE_KDBKEY
124 static  int		enable_kdbkey = TRUE; /* enable keyboard debug */
125 #endif
126 
127 static	long        	scrn_blank_time = 0;    /* screen saver timeout value */
128 #ifdef DEV_SPLASH
129 static	int     	scrn_blanked;		/* # of blanked screen */
130 static	int		sticky_splash = FALSE;
131 
132 static	void		none_saver(sc_softc_t *sc, int blank) { }
133 static	void		(*current_saver)(sc_softc_t *, int) = none_saver;
134 #endif
135 
136 #ifdef SC_NO_SUSPEND_VTYSWITCH
137 static	int		sc_no_suspend_vtswitch = 1;
138 #else
139 static	int		sc_no_suspend_vtswitch = 0;
140 #endif
141 static	int		sc_susp_scr;
142 
143 static SYSCTL_NODE(_hw, OID_AUTO, syscons, CTLFLAG_RD, 0, "syscons");
144 static SYSCTL_NODE(_hw_syscons, OID_AUTO, saver, CTLFLAG_RD, 0, "saver");
145 SYSCTL_INT(_hw_syscons_saver, OID_AUTO, keybonly, CTLFLAG_RW,
146     &sc_saver_keyb_only, 0, "screen saver interrupted by input only");
147 SYSCTL_INT(_hw_syscons, OID_AUTO, bell, CTLFLAG_RW, &enable_bell,
148     0, "enable bell");
149 #ifndef SC_DISABLE_REBOOT
150 SYSCTL_INT(_hw_syscons, OID_AUTO, kbd_reboot, CTLFLAG_RW|CTLFLAG_SECURE, &enable_reboot,
151     0, "enable keyboard reboot");
152 #endif
153 #ifndef SC_DISABLE_KDBKEY
154 SYSCTL_INT(_hw_syscons, OID_AUTO, kbd_debug, CTLFLAG_RW|CTLFLAG_SECURE, &enable_kdbkey,
155     0, "enable keyboard debug");
156 #endif
157 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RWTUN,
158     &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
159 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
160 #include "font.h"
161 #endif
162 
163 	tsw_ioctl_t	*sc_user_ioctl;
164 
165 static	bios_values_t	bios_value;
166 
167 static	int		enable_panic_key;
168 SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
169 	   0, "Enable panic via keypress specified in kbdmap(5)");
170 
171 #define SC_CONSOLECTL	255
172 
173 #define VTY_WCHAN(sc, vty) (&SC_DEV(sc, vty))
174 
175 static	int		debugger;
176 
177 /* prototypes */
178 static int sc_allocate_keyboard(sc_softc_t *sc, int unit);
179 static int scvidprobe(int unit, int flags, int cons);
180 static int sckbdprobe(int unit, int flags, int cons);
181 static void scmeminit(void *arg);
182 static int scdevtounit(struct tty *tp);
183 static kbd_callback_func_t sckbdevent;
184 static void scinit(int unit, int flags);
185 static scr_stat *sc_get_stat(struct tty *tp);
186 static void scterm(int unit, int flags);
187 static void scshutdown(void *, int);
188 static void scsuspend(void *);
189 static void scresume(void *);
190 static u_int scgetc(sc_softc_t *sc, u_int flags);
191 static void sc_puts(scr_stat *scp, u_char *buf, int len, int kernel);
192 #define SCGETC_CN	1
193 #define SCGETC_NONBLOCK	2
194 static void sccnupdate(scr_stat *scp);
195 static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
196 static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
197 static timeout_t scrn_timer;
198 static int and_region(int *s1, int *e1, int s2, int e2);
199 static void scrn_update(scr_stat *scp, int show_cursor);
200 
201 #ifdef DEV_SPLASH
202 static int scsplash_callback(int event, void *arg);
203 static void scsplash_saver(sc_softc_t *sc, int show);
204 static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
205 static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
206 static int set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border);
207 static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
208 static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
209 static int wait_scrn_saver_stop(sc_softc_t *sc);
210 #define scsplash_stick(stick)		(sticky_splash = (stick))
211 #else /* !DEV_SPLASH */
212 #define scsplash_stick(stick)
213 #endif /* DEV_SPLASH */
214 
215 static int do_switch_scr(sc_softc_t *sc, int s);
216 static int vt_proc_alive(scr_stat *scp);
217 static int signal_vt_rel(scr_stat *scp);
218 static int signal_vt_acq(scr_stat *scp);
219 static int finish_vt_rel(scr_stat *scp, int release, int *s);
220 static int finish_vt_acq(scr_stat *scp);
221 static void exchange_scr(sc_softc_t *sc);
222 static void update_cursor_image(scr_stat *scp);
223 static void change_cursor_shape(scr_stat *scp, int flags, int base, int height);
224 static void update_font(scr_stat *);
225 static int save_kbd_state(scr_stat *scp);
226 static int update_kbd_state(scr_stat *scp, int state, int mask);
227 static int update_kbd_leds(scr_stat *scp, int which);
228 static timeout_t blink_screen;
229 static struct tty *sc_alloc_tty(int, int);
230 
231 static cn_probe_t	sc_cnprobe;
232 static cn_init_t	sc_cninit;
233 static cn_term_t	sc_cnterm;
234 static cn_getc_t	sc_cngetc;
235 static cn_putc_t	sc_cnputc;
236 static cn_grab_t	sc_cngrab;
237 static cn_ungrab_t	sc_cnungrab;
238 
239 CONSOLE_DRIVER(sc);
240 
241 static	tsw_open_t	sctty_open;
242 static	tsw_close_t	sctty_close;
243 static	tsw_outwakeup_t	sctty_outwakeup;
244 static	tsw_ioctl_t	sctty_ioctl;
245 static	tsw_mmap_t	sctty_mmap;
246 
247 static struct ttydevsw sc_ttydevsw = {
248 	.tsw_open	= sctty_open,
249 	.tsw_close	= sctty_close,
250 	.tsw_outwakeup	= sctty_outwakeup,
251 	.tsw_ioctl	= sctty_ioctl,
252 	.tsw_mmap	= sctty_mmap,
253 };
254 
255 static d_ioctl_t	consolectl_ioctl;
256 static d_close_t	consolectl_close;
257 
258 static struct cdevsw consolectl_devsw = {
259 	.d_version	= D_VERSION,
260 	.d_flags	= D_NEEDGIANT | D_TRACKCLOSE,
261 	.d_ioctl	= consolectl_ioctl,
262 	.d_close	= consolectl_close,
263 	.d_name		= "consolectl",
264 };
265 
266 int
267 sc_probe_unit(int unit, int flags)
268 {
269     if (!vty_enabled(VTY_SC))
270         return ENXIO;
271     if (!scvidprobe(unit, flags, FALSE)) {
272 	if (bootverbose)
273 	    printf("%s%d: no video adapter found.\n", SC_DRIVER_NAME, unit);
274 	return ENXIO;
275     }
276 
277     /* syscons will be attached even when there is no keyboard */
278     sckbdprobe(unit, flags, FALSE);
279 
280     return 0;
281 }
282 
283 /* probe video adapters, return TRUE if found */
284 static int
285 scvidprobe(int unit, int flags, int cons)
286 {
287     /*
288      * Access the video adapter driver through the back door!
289      * Video adapter drivers need to be configured before syscons.
290      * However, when syscons is being probed as the low-level console,
291      * they have not been initialized yet.  We force them to initialize
292      * themselves here. XXX
293      */
294     vid_configure(cons ? VIO_PROBE_ONLY : 0);
295 
296     return (vid_find_adapter("*", unit) >= 0);
297 }
298 
299 /* probe the keyboard, return TRUE if found */
300 static int
301 sckbdprobe(int unit, int flags, int cons)
302 {
303     /* access the keyboard driver through the backdoor! */
304     kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
305 
306     return (kbd_find_keyboard("*", unit) >= 0);
307 }
308 
309 static char
310 *adapter_name(video_adapter_t *adp)
311 {
312     static struct {
313 	int type;
314 	char *name[2];
315     } names[] = {
316 	{ KD_MONO,	{ "MDA",	"MDA" } },
317 	{ KD_HERCULES,	{ "Hercules",	"Hercules" } },
318 	{ KD_CGA,	{ "CGA",	"CGA" } },
319 	{ KD_EGA,	{ "EGA",	"EGA (mono)" } },
320 	{ KD_VGA,	{ "VGA",	"VGA (mono)" } },
321 	{ KD_PC98,	{ "PC-98x1",	"PC-98x1" } },
322 	{ KD_TGA,	{ "TGA",	"TGA" } },
323 	{ -1,		{ "Unknown",	"Unknown" } },
324     };
325     int i;
326 
327     for (i = 0; names[i].type != -1; ++i)
328 	if (names[i].type == adp->va_type)
329 	    break;
330     return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
331 }
332 
333 static void
334 sctty_outwakeup(struct tty *tp)
335 {
336     size_t len;
337     u_char buf[PCBURST];
338     scr_stat *scp = sc_get_stat(tp);
339 
340     if (scp->status & SLKED ||
341 	(scp == scp->sc->cur_scp && scp->sc->blink_in_progress))
342 	return;
343 
344     for (;;) {
345 	len = ttydisc_getc(tp, buf, sizeof buf);
346 	if (len == 0)
347 	    break;
348 	sc_puts(scp, buf, len, 0);
349     }
350 }
351 
352 static struct tty *
353 sc_alloc_tty(int index, int devnum)
354 {
355 	struct sc_ttysoftc *stc;
356 	struct tty *tp;
357 
358 	/* Allocate TTY object and softc to store unit number. */
359 	stc = malloc(sizeof(struct sc_ttysoftc), M_DEVBUF, M_WAITOK);
360 	stc->st_index = index;
361 	stc->st_stat = NULL;
362 	tp = tty_alloc_mutex(&sc_ttydevsw, stc, &Giant);
363 
364 	/* Create device node. */
365 	tty_makedev(tp, NULL, "v%r", devnum);
366 
367 	return (tp);
368 }
369 
370 #ifdef SC_PIXEL_MODE
371 static void
372 sc_set_vesa_mode(scr_stat *scp, sc_softc_t *sc, int unit)
373 {
374 	video_info_t info;
375 	u_char *font;
376 	int depth;
377 	int fontsize;
378 	int i;
379 	int vmode;
380 
381 	vmode = 0;
382 	(void)resource_int_value("sc", unit, "vesa_mode", &vmode);
383 	if (vmode < M_VESA_BASE || vmode > M_VESA_MODE_MAX ||
384 	    vidd_get_info(sc->adp, vmode, &info) != 0 ||
385 	    !sc_support_pixel_mode(&info))
386 		vmode = 0;
387 
388 	/*
389 	 * If the mode is unset or unsupported, search for an available
390 	 * 800x600 graphics mode with the highest color depth.
391 	 */
392 	if (vmode == 0) {
393 		for (depth = 0, i = M_VESA_BASE; i <= M_VESA_MODE_MAX; i++)
394 			if (vidd_get_info(sc->adp, i, &info) == 0 &&
395 			    info.vi_width == 800 && info.vi_height == 600 &&
396 			    sc_support_pixel_mode(&info) &&
397 			    info.vi_depth > depth) {
398 				vmode = i;
399 				depth = info.vi_depth;
400 			}
401 		if (vmode == 0)
402 			return;
403 		vidd_get_info(sc->adp, vmode, &info);
404 	}
405 
406 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
407 	fontsize = info.vi_cheight;
408 #else
409 	fontsize = scp->font_size;
410 #endif
411 	if (fontsize < 14)
412 		fontsize = 8;
413 	else if (fontsize >= 16)
414 		fontsize = 16;
415 	else
416 		fontsize = 14;
417 #ifndef SC_NO_FONT_LOADING
418 	switch (fontsize) {
419 	case 8:
420 		if ((sc->fonts_loaded & FONT_8) == 0)
421 			return;
422 		font = sc->font_8;
423 		break;
424 	case 14:
425 		if ((sc->fonts_loaded & FONT_14) == 0)
426 			return;
427 		font = sc->font_14;
428 		break;
429 	case 16:
430 		if ((sc->fonts_loaded & FONT_16) == 0)
431 			return;
432 		font = sc->font_16;
433 		break;
434 	}
435 #else
436 	font = NULL;
437 #endif
438 #ifdef DEV_SPLASH
439 	if ((sc->flags & SC_SPLASH_SCRN) != 0)
440 		splash_term(sc->adp);
441 #endif
442 #ifndef SC_NO_HISTORY
443 	if (scp->history != NULL) {
444 		sc_vtb_append(&scp->vtb, 0, scp->history,
445 		    scp->ypos * scp->xsize + scp->xpos);
446 		scp->history_pos = sc_vtb_tail(scp->history);
447 	}
448 #endif
449 	vidd_set_mode(sc->adp, vmode);
450 	scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
451 	scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
452 	scp->xpixel = info.vi_width;
453 	scp->ypixel = info.vi_height;
454 	scp->xsize = scp->xpixel / 8;
455 	scp->ysize = scp->ypixel / fontsize;
456 	scp->xpos = 0;
457 	scp->ypos = scp->ysize - 1;
458 	scp->xoff = scp->yoff = 0;
459 	scp->font = font;
460 	scp->font_size = fontsize;
461 	scp->font_width = 8;
462 	scp->start = scp->xsize * scp->ysize - 1;
463 	scp->end = 0;
464 	scp->cursor_pos = scp->cursor_oldpos = scp->xsize * scp->xsize;
465 	scp->mode = sc->initial_mode = vmode;
466 #ifndef __sparc64__
467 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
468 	    (void *)sc->adp->va_window, FALSE);
469 #endif
470 	sc_alloc_scr_buffer(scp, FALSE, FALSE);
471 	sc_init_emulator(scp, NULL);
472 #ifndef SC_NO_CUTPASTE
473 	sc_alloc_cut_buffer(scp, FALSE);
474 #endif
475 #ifndef SC_NO_HISTORY
476 	sc_alloc_history_buffer(scp, 0, 0, FALSE);
477 #endif
478 	sc_set_border(scp, scp->border);
479 	sc_set_cursor_image(scp);
480 	scp->status &= ~UNKNOWN_MODE;
481 #ifdef DEV_SPLASH
482 	if ((sc->flags & SC_SPLASH_SCRN) != 0)
483 		splash_init(sc->adp, scsplash_callback, sc);
484 #endif
485 }
486 #endif
487 
488 int
489 sc_attach_unit(int unit, int flags)
490 {
491     sc_softc_t *sc;
492     scr_stat *scp;
493     struct cdev *dev;
494     int vc;
495 
496     if (!vty_enabled(VTY_SC))
497         return ENXIO;
498 
499     flags &= ~SC_KERNEL_CONSOLE;
500 
501     if (sc_console_unit == unit) {
502 	/*
503 	 * If this unit is being used as the system console, we need to
504 	 * adjust some variables and buffers before and after scinit().
505 	 */
506 	/* assert(sc_console != NULL) */
507 	flags |= SC_KERNEL_CONSOLE;
508 	scmeminit(NULL);
509     }
510     scinit(unit, flags);
511 
512     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
513     sc->config = flags;
514     callout_init(&sc->ctimeout, 0);
515     callout_init(&sc->cblink, 0);
516     scp = sc_get_stat(sc->dev[0]);
517     if (sc_console == NULL)	/* sc_console_unit < 0 */
518 	sc_console = scp;
519 
520 #ifdef SC_PIXEL_MODE
521     if ((sc->config & SC_VESAMODE) != 0)
522 	sc_set_vesa_mode(scp, sc, unit);
523 #endif /* SC_PIXEL_MODE */
524 
525     /* initialize cursor */
526     if (!ISGRAPHSC(scp))
527     	update_cursor_image(scp);
528 
529     /* get screen update going */
530     scrn_timer(sc);
531 
532     /* set up the keyboard */
533     (void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
534     update_kbd_state(scp, scp->status, LOCK_MASK);
535 
536     printf("%s%d: %s <%d virtual consoles, flags=0x%x>\n",
537 	   SC_DRIVER_NAME, unit, adapter_name(sc->adp), sc->vtys, sc->config);
538     if (bootverbose) {
539 	printf("%s%d:", SC_DRIVER_NAME, unit);
540     	if (sc->adapter >= 0)
541 	    printf(" fb%d", sc->adapter);
542 	if (sc->keyboard >= 0)
543 	    printf(", kbd%d", sc->keyboard);
544 	if (scp->tsw)
545 	    printf(", terminal emulator: %s (%s)",
546 		   scp->tsw->te_name, scp->tsw->te_desc);
547 	printf("\n");
548     }
549 
550     /* Register suspend/resume/shutdown callbacks for the kernel console. */
551     if (sc_console_unit == unit) {
552 	EVENTHANDLER_REGISTER(power_suspend_early, scsuspend, NULL,
553 			      EVENTHANDLER_PRI_ANY);
554 	EVENTHANDLER_REGISTER(power_resume, scresume, NULL,
555 			      EVENTHANDLER_PRI_ANY);
556 	EVENTHANDLER_REGISTER(shutdown_pre_sync, scshutdown, NULL,
557 			      SHUTDOWN_PRI_DEFAULT);
558     }
559 
560     for (vc = 0; vc < sc->vtys; vc++) {
561 	if (sc->dev[vc] == NULL) {
562 		sc->dev[vc] = sc_alloc_tty(vc, vc + unit * MAXCONS);
563 		if (vc == 0 && sc->dev == main_devs)
564 			SC_STAT(sc->dev[0]) = &main_console;
565 	}
566 	/*
567 	 * The first vty already has struct tty and scr_stat initialized
568 	 * in scinit().  The other vtys will have these structs when
569 	 * first opened.
570 	 */
571     }
572 
573     dev = make_dev(&consolectl_devsw, 0, UID_ROOT, GID_WHEEL, 0600,
574         "consolectl");
575     dev->si_drv1 = sc->dev[0];
576 
577     return 0;
578 }
579 
580 static void
581 scmeminit(void *arg)
582 {
583     if (!vty_enabled(VTY_SC))
584         return;
585     if (sc_malloc)
586 	return;
587     sc_malloc = TRUE;
588 
589     /*
590      * As soon as malloc() becomes functional, we had better allocate
591      * various buffers for the kernel console.
592      */
593 
594     if (sc_console_unit < 0)	/* sc_console == NULL */
595 	return;
596 
597     /* copy the temporary buffer to the final buffer */
598     sc_alloc_scr_buffer(sc_console, FALSE, FALSE);
599 
600 #ifndef SC_NO_CUTPASTE
601     sc_alloc_cut_buffer(sc_console, FALSE);
602 #endif
603 
604 #ifndef SC_NO_HISTORY
605     /* initialize history buffer & pointers */
606     sc_alloc_history_buffer(sc_console, 0, 0, FALSE);
607 #endif
608 }
609 
610 /* XXX */
611 SYSINIT(sc_mem, SI_SUB_KMEM, SI_ORDER_ANY, scmeminit, NULL);
612 
613 static int
614 scdevtounit(struct tty *tp)
615 {
616     int vty = SC_VTY(tp);
617 
618     if (vty == SC_CONSOLECTL)
619 	return ((sc_console != NULL) ? sc_console->sc->unit : -1);
620     else if ((vty < 0) || (vty >= MAXCONS*sc_max_unit()))
621 	return -1;
622     else
623 	return vty/MAXCONS;
624 }
625 
626 static int
627 sctty_open(struct tty *tp)
628 {
629     int unit = scdevtounit(tp);
630     sc_softc_t *sc;
631     scr_stat *scp;
632 #ifndef __sparc64__
633     keyarg_t key;
634 #endif
635 
636     DPRINTF(5, ("scopen: dev:%s, unit:%d, vty:%d\n",
637 		devtoname(tp->t_dev), unit, SC_VTY(tp)));
638 
639     sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
640     if (sc == NULL)
641 	return ENXIO;
642 
643     if (!tty_opened(tp)) {
644         /* Use the current setting of the <-- key as default VERASE. */
645         /* If the Delete key is preferable, an stty is necessary     */
646 #ifndef __sparc64__
647 	if (sc->kbd != NULL) {
648 	    key.keynum = KEYCODE_BS;
649 	    (void)kbdd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
650             tp->t_termios.c_cc[VERASE] = key.key.map[0];
651 	}
652 #endif
653     }
654 
655     scp = sc_get_stat(tp);
656     if (scp == NULL) {
657 	scp = SC_STAT(tp) = alloc_scp(sc, SC_VTY(tp));
658 	if (ISGRAPHSC(scp))
659 	    sc_set_pixel_mode(scp, NULL, 0, 0, 16, 8);
660     }
661     if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
662 	tp->t_winsize.ws_col = scp->xsize;
663 	tp->t_winsize.ws_row = scp->ysize;
664     }
665 
666     return (0);
667 }
668 
669 static void
670 sctty_close(struct tty *tp)
671 {
672     scr_stat *scp;
673     int s;
674 
675     if (SC_VTY(tp) != SC_CONSOLECTL) {
676 	scp = sc_get_stat(tp);
677 	/* were we in the middle of the VT switching process? */
678 	DPRINTF(5, ("sc%d: scclose(), ", scp->sc->unit));
679 	s = spltty();
680 	if ((scp == scp->sc->cur_scp) && (scp->sc->unit == sc_console_unit))
681 	    cnavailable(sc_consptr, TRUE);
682 	if (finish_vt_rel(scp, TRUE, &s) == 0)	/* force release */
683 	    DPRINTF(5, ("reset WAIT_REL, "));
684 	if (finish_vt_acq(scp) == 0)		/* force acknowledge */
685 	    DPRINTF(5, ("reset WAIT_ACQ, "));
686 #ifdef not_yet_done
687 	if (scp == &main_console) {
688 	    scp->pid = 0;
689 	    scp->proc = NULL;
690 	    scp->smode.mode = VT_AUTO;
691 	}
692 	else {
693 	    sc_vtb_destroy(&scp->vtb);
694 #ifndef __sparc64__
695 	    sc_vtb_destroy(&scp->scr);
696 #endif
697 	    sc_free_history_buffer(scp, scp->ysize);
698 	    SC_STAT(tp) = NULL;
699 	    free(scp, M_DEVBUF);
700 	}
701 #else
702 	scp->pid = 0;
703 	scp->proc = NULL;
704 	scp->smode.mode = VT_AUTO;
705 #endif
706 	scp->kbd_mode = K_XLATE;
707 	if (scp == scp->sc->cur_scp)
708 	    (void)kbdd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
709 	DPRINTF(5, ("done.\n"));
710     }
711 }
712 
713 #if 0 /* XXX mpsafetty: fix screensaver. What about outwakeup? */
714 static int
715 scread(struct cdev *dev, struct uio *uio, int flag)
716 {
717     if (!sc_saver_keyb_only)
718 	sc_touch_scrn_saver();
719     return ttyread(dev, uio, flag);
720 }
721 #endif
722 
723 static int
724 sckbdevent(keyboard_t *thiskbd, int event, void *arg)
725 {
726     sc_softc_t *sc;
727     struct tty *cur_tty;
728     int c, error = 0;
729     size_t len;
730     const u_char *cp;
731 
732     sc = (sc_softc_t *)arg;
733     /* assert(thiskbd == sc->kbd) */
734 
735     mtx_lock(&Giant);
736 
737     switch (event) {
738     case KBDIO_KEYINPUT:
739 	break;
740     case KBDIO_UNLOADING:
741 	sc->kbd = NULL;
742 	sc->keyboard = -1;
743 	kbd_release(thiskbd, (void *)&sc->keyboard);
744 	goto done;
745     default:
746 	error = EINVAL;
747 	goto done;
748     }
749 
750     /*
751      * Loop while there is still input to get from the keyboard.
752      * I don't think this is nessesary, and it doesn't fix
753      * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
754      */
755     while ((c = scgetc(sc, SCGETC_NONBLOCK)) != NOKEY) {
756 
757 	cur_tty = SC_DEV(sc, sc->cur_scp->index);
758 	if (!tty_opened_ns(cur_tty))
759 	    continue;
760 
761 	if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
762 	    continue;
763 
764 	switch (KEYFLAGS(c)) {
765 	case 0x0000: /* normal key */
766 	    ttydisc_rint(cur_tty, KEYCHAR(c), 0);
767 	    break;
768 	case FKEY:  /* function key, return string */
769 	    cp = (*sc->cur_scp->tsw->te_fkeystr)(sc->cur_scp, c);
770 	    if (cp != NULL) {
771 	    	ttydisc_rint_simple(cur_tty, cp, strlen(cp));
772 		break;
773 	    }
774 	    cp = kbdd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
775 	    if (cp != NULL)
776 	    	ttydisc_rint_simple(cur_tty, cp, len);
777 	    break;
778 	case MKEY:  /* meta is active, prepend ESC */
779 	    ttydisc_rint(cur_tty, 0x1b, 0);
780 	    ttydisc_rint(cur_tty, KEYCHAR(c), 0);
781 	    break;
782 	case BKEY:  /* backtab fixed sequence (esc [ Z) */
783 	    ttydisc_rint_simple(cur_tty, "\x1B[Z", 3);
784 	    break;
785 	}
786 
787 	ttydisc_rint_done(cur_tty);
788     }
789 
790     sc->cur_scp->status |= MOUSE_HIDDEN;
791 
792 done:
793     mtx_unlock(&Giant);
794     return (error);
795 }
796 
797 static int
798 sctty_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
799 {
800     int error;
801     int i;
802     sc_softc_t *sc;
803     scr_stat *scp;
804     int s;
805 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
806     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
807     int ival;
808 #endif
809 
810     /* If there is a user_ioctl function call that first */
811     if (sc_user_ioctl) {
812 	error = (*sc_user_ioctl)(tp, cmd, data, td);
813 	if (error != ENOIOCTL)
814 	    return error;
815     }
816 
817     error = sc_vid_ioctl(tp, cmd, data, td);
818     if (error != ENOIOCTL)
819 	return error;
820 
821 #ifndef SC_NO_HISTORY
822     error = sc_hist_ioctl(tp, cmd, data, td);
823     if (error != ENOIOCTL)
824 	return error;
825 #endif
826 
827 #ifndef SC_NO_SYSMOUSE
828     error = sc_mouse_ioctl(tp, cmd, data, td);
829     if (error != ENOIOCTL)
830 	return error;
831 #endif
832 
833     scp = sc_get_stat(tp);
834     /* assert(scp != NULL) */
835     /* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
836     sc = scp->sc;
837 
838     if (scp->tsw) {
839 	error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, td);
840 	if (error != ENOIOCTL)
841 	    return error;
842     }
843 
844     switch (cmd) {  		/* process console hardware related ioctl's */
845 
846     case GIO_ATTR:      	/* get current attributes */
847 	/* this ioctl is not processed here, but in the terminal emulator */
848 	return ENOTTY;
849 
850     case GIO_COLOR:     	/* is this a color console ? */
851 	*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
852 	return 0;
853 
854     case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
855 	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
856             return EINVAL;
857 	s = spltty();
858 	scrn_blank_time = *(int *)data;
859 	run_scrn_saver = (scrn_blank_time != 0);
860 	splx(s);
861 	return 0;
862 
863     case CONS_CURSORTYPE:   	/* set cursor type (obsolete) */
864 	s = spltty();
865 	*(int *)data &= CONS_CURSOR_ATTRS;
866 	sc_change_cursor_shape(scp, *(int *)data, -1, -1);
867 	splx(s);
868 	return 0;
869 
870     case CONS_GETCURSORSHAPE:   /* get cursor shape (new interface) */
871 	if (((int *)data)[0] & CONS_LOCAL_CURSOR) {
872 	    ((int *)data)[0] = scp->curr_curs_attr.flags;
873 	    ((int *)data)[1] = scp->curr_curs_attr.base;
874 	    ((int *)data)[2] = scp->curr_curs_attr.height;
875 	} else {
876 	    ((int *)data)[0] = sc->curs_attr.flags;
877 	    ((int *)data)[1] = sc->curs_attr.base;
878 	    ((int *)data)[2] = sc->curs_attr.height;
879 	}
880 	return 0;
881 
882     case CONS_SETCURSORSHAPE:   /* set cursor shape (new interface) */
883 	s = spltty();
884 	sc_change_cursor_shape(scp, ((int *)data)[0],
885 	    ((int *)data)[1], ((int *)data)[2]);
886 	splx(s);
887 	return 0;
888 
889     case CONS_BELLTYPE: 	/* set bell type sound/visual */
890 	if ((*(int *)data) & CONS_VISUAL_BELL)
891 	    sc->flags |= SC_VISUAL_BELL;
892 	else
893 	    sc->flags &= ~SC_VISUAL_BELL;
894 	if ((*(int *)data) & CONS_QUIET_BELL)
895 	    sc->flags |= SC_QUIET_BELL;
896 	else
897 	    sc->flags &= ~SC_QUIET_BELL;
898 	return 0;
899 
900     case CONS_GETINFO:  	/* get current (virtual) console info */
901     {
902 	vid_info_t *ptr = (vid_info_t*)data;
903 	if (ptr->size == sizeof(struct vid_info)) {
904 	    ptr->m_num = sc->cur_scp->index;
905 	    ptr->font_size = scp->font_size;
906 	    ptr->mv_col = scp->xpos;
907 	    ptr->mv_row = scp->ypos;
908 	    ptr->mv_csz = scp->xsize;
909 	    ptr->mv_rsz = scp->ysize;
910 	    ptr->mv_hsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
911 	    /*
912 	     * The following fields are filled by the terminal emulator. XXX
913 	     *
914 	     * ptr->mv_norm.fore
915 	     * ptr->mv_norm.back
916 	     * ptr->mv_rev.fore
917 	     * ptr->mv_rev.back
918 	     */
919 	    ptr->mv_grfc.fore = 0;      /* not supported */
920 	    ptr->mv_grfc.back = 0;      /* not supported */
921 	    ptr->mv_ovscan = scp->border;
922 	    if (scp == sc->cur_scp)
923 		save_kbd_state(scp);
924 	    ptr->mk_keylock = scp->status & LOCK_MASK;
925 	    return 0;
926 	}
927 	return EINVAL;
928     }
929 
930     case CONS_GETVERS:  	/* get version number */
931 	*(int*)data = 0x200;    /* version 2.0 */
932 	return 0;
933 
934     case CONS_IDLE:		/* see if the screen has been idle */
935 	/*
936 	 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
937 	 * the user process may have been writing something on the
938 	 * screen and syscons is not aware of it. Declare the screen
939 	 * is NOT idle if it is in one of these modes. But there is
940 	 * an exception to it; if a screen saver is running in the
941 	 * graphics mode in the current screen, we should say that the
942 	 * screen has been idle.
943 	 */
944 	*(int *)data = (sc->flags & SC_SCRN_IDLE)
945 		       && (!ISGRAPHSC(sc->cur_scp)
946 			   || (sc->cur_scp->status & SAVER_RUNNING));
947 	return 0;
948 
949     case CONS_SAVERMODE:	/* set saver mode */
950 	switch(*(int *)data) {
951 	case CONS_NO_SAVER:
952 	case CONS_USR_SAVER:
953 	    /* if a LKM screen saver is running, stop it first. */
954 	    scsplash_stick(FALSE);
955 	    saver_mode = *(int *)data;
956 	    s = spltty();
957 #ifdef DEV_SPLASH
958 	    if ((error = wait_scrn_saver_stop(NULL))) {
959 		splx(s);
960 		return error;
961 	    }
962 #endif
963 	    run_scrn_saver = TRUE;
964 	    if (saver_mode == CONS_USR_SAVER)
965 		scp->status |= SAVER_RUNNING;
966 	    else
967 		scp->status &= ~SAVER_RUNNING;
968 	    scsplash_stick(TRUE);
969 	    splx(s);
970 	    break;
971 	case CONS_LKM_SAVER:
972 	    s = spltty();
973 	    if ((saver_mode == CONS_USR_SAVER) && (scp->status & SAVER_RUNNING))
974 		scp->status &= ~SAVER_RUNNING;
975 	    saver_mode = *(int *)data;
976 	    splx(s);
977 	    break;
978 	default:
979 	    return EINVAL;
980 	}
981 	return 0;
982 
983     case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
984 	/*
985 	 * Note that this ioctl does not guarantee the screen saver
986 	 * actually starts or stops. It merely attempts to do so...
987 	 */
988 	s = spltty();
989 	run_scrn_saver = (*(int *)data != 0);
990 	if (run_scrn_saver)
991 	    sc->scrn_time_stamp -= scrn_blank_time;
992 	splx(s);
993 	return 0;
994 
995     case CONS_SCRSHOT:		/* get a screen shot */
996     {
997 	int retval, hist_rsz;
998 	size_t lsize, csize;
999 	vm_offset_t frbp, hstp;
1000 	unsigned lnum;
1001 	scrshot_t *ptr = (scrshot_t *)data;
1002 	void *outp = ptr->buf;
1003 
1004 	if (ptr->x < 0 || ptr->y < 0 || ptr->xsize < 0 || ptr->ysize < 0)
1005 		return EINVAL;
1006 	s = spltty();
1007 	if (ISGRAPHSC(scp)) {
1008 	    splx(s);
1009 	    return EOPNOTSUPP;
1010 	}
1011 	hist_rsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
1012 	if (((u_int)ptr->x + ptr->xsize) > scp->xsize ||
1013 	    ((u_int)ptr->y + ptr->ysize) > (scp->ysize + hist_rsz)) {
1014 	    splx(s);
1015 	    return EINVAL;
1016 	}
1017 
1018 	lsize = scp->xsize * sizeof(u_int16_t);
1019 	csize = ptr->xsize * sizeof(u_int16_t);
1020 	/* Pointer to the last line of framebuffer */
1021 	frbp = scp->vtb.vtb_buffer + scp->ysize * lsize + ptr->x *
1022 	       sizeof(u_int16_t);
1023 	/* Pointer to the last line of target buffer */
1024 	outp = (char *)outp + ptr->ysize * csize;
1025 	/* Pointer to the last line of history buffer */
1026 	if (scp->history != NULL)
1027 	    hstp = scp->history->vtb_buffer + sc_vtb_tail(scp->history) *
1028 		sizeof(u_int16_t) + ptr->x * sizeof(u_int16_t);
1029 	else
1030 	    hstp = 0;
1031 
1032 	retval = 0;
1033 	for (lnum = 0; lnum < (ptr->y + ptr->ysize); lnum++) {
1034 	    if (lnum < scp->ysize) {
1035 		frbp -= lsize;
1036 	    } else {
1037 		hstp -= lsize;
1038 		if (hstp < scp->history->vtb_buffer)
1039 		    hstp += scp->history->vtb_rows * lsize;
1040 		frbp = hstp;
1041 	    }
1042 	    if (lnum < ptr->y)
1043 		continue;
1044 	    outp = (char *)outp - csize;
1045 	    retval = copyout((void *)frbp, outp, csize);
1046 	    if (retval != 0)
1047 		break;
1048 	}
1049 	splx(s);
1050 	return retval;
1051     }
1052 
1053     case VT_SETMODE:    	/* set screen switcher mode */
1054     {
1055 	struct vt_mode *mode;
1056 	struct proc *p1;
1057 
1058 	mode = (struct vt_mode *)data;
1059 	DPRINTF(5, ("%s%d: VT_SETMODE ", SC_DRIVER_NAME, sc->unit));
1060 	if (scp->smode.mode == VT_PROCESS) {
1061 	    p1 = pfind(scp->pid);
1062     	    if (scp->proc == p1 && scp->proc != td->td_proc) {
1063 		if (p1)
1064 		    PROC_UNLOCK(p1);
1065 		DPRINTF(5, ("error EPERM\n"));
1066 		return EPERM;
1067 	    }
1068 	    if (p1)
1069 		PROC_UNLOCK(p1);
1070 	}
1071 	s = spltty();
1072 	if (mode->mode == VT_AUTO) {
1073 	    scp->smode.mode = VT_AUTO;
1074 	    scp->proc = NULL;
1075 	    scp->pid = 0;
1076 	    DPRINTF(5, ("VT_AUTO, "));
1077 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
1078 		cnavailable(sc_consptr, TRUE);
1079 	    /* were we in the middle of the vty switching process? */
1080 	    if (finish_vt_rel(scp, TRUE, &s) == 0)
1081 		DPRINTF(5, ("reset WAIT_REL, "));
1082 	    if (finish_vt_acq(scp) == 0)
1083 		DPRINTF(5, ("reset WAIT_ACQ, "));
1084 	} else {
1085 	    if (!ISSIGVALID(mode->relsig) || !ISSIGVALID(mode->acqsig)
1086 		|| !ISSIGVALID(mode->frsig)) {
1087 		splx(s);
1088 		DPRINTF(5, ("error EINVAL\n"));
1089 		return EINVAL;
1090 	    }
1091 	    DPRINTF(5, ("VT_PROCESS %d, ", td->td_proc->p_pid));
1092 	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
1093 	    scp->proc = td->td_proc;
1094 	    scp->pid = scp->proc->p_pid;
1095 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
1096 		cnavailable(sc_consptr, FALSE);
1097 	}
1098 	splx(s);
1099 	DPRINTF(5, ("\n"));
1100 	return 0;
1101     }
1102 
1103     case VT_GETMODE:    	/* get screen switcher mode */
1104 	bcopy(&scp->smode, data, sizeof(struct vt_mode));
1105 	return 0;
1106 
1107 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1108     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1109     case _IO('v', 4):
1110 	ival = IOCPARM_IVAL(data);
1111 	data = (caddr_t)&ival;
1112 	/* FALLTHROUGH */
1113 #endif
1114     case VT_RELDISP:    	/* screen switcher ioctl */
1115 	s = spltty();
1116 	/*
1117 	 * This must be the current vty which is in the VT_PROCESS
1118 	 * switching mode...
1119 	 */
1120 	if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
1121 	    splx(s);
1122 	    return EINVAL;
1123 	}
1124 	/* ...and this process is controlling it. */
1125 	if (scp->proc != td->td_proc) {
1126 	    splx(s);
1127 	    return EPERM;
1128 	}
1129 	error = EINVAL;
1130 	switch(*(int *)data) {
1131 	case VT_FALSE:  	/* user refuses to release screen, abort */
1132 	    if ((error = finish_vt_rel(scp, FALSE, &s)) == 0)
1133 		DPRINTF(5, ("%s%d: VT_FALSE\n", SC_DRIVER_NAME, sc->unit));
1134 	    break;
1135 	case VT_TRUE:   	/* user has released screen, go on */
1136 	    if ((error = finish_vt_rel(scp, TRUE, &s)) == 0)
1137 		DPRINTF(5, ("%s%d: VT_TRUE\n", SC_DRIVER_NAME, sc->unit));
1138 	    break;
1139 	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
1140 	    if ((error = finish_vt_acq(scp)) == 0)
1141 		DPRINTF(5, ("%s%d: VT_ACKACQ\n", SC_DRIVER_NAME, sc->unit));
1142 	    break;
1143 	default:
1144 	    break;
1145 	}
1146 	splx(s);
1147 	return error;
1148 
1149     case VT_OPENQRY:    	/* return free virtual console */
1150 	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
1151 	    tp = SC_DEV(sc, i);
1152 	    if (!tty_opened_ns(tp)) {
1153 		*(int *)data = i + 1;
1154 		return 0;
1155 	    }
1156 	}
1157 	return EINVAL;
1158 
1159 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1160     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1161     case _IO('v', 5):
1162 	ival = IOCPARM_IVAL(data);
1163 	data = (caddr_t)&ival;
1164 	/* FALLTHROUGH */
1165 #endif
1166     case VT_ACTIVATE:   	/* switch to screen *data */
1167 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1168 	s = spltty();
1169 	error = sc_clean_up(sc->cur_scp);
1170 	splx(s);
1171 	if (error)
1172 	    return error;
1173 	error = sc_switch_scr(sc, i);
1174 	return (error);
1175 
1176 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1177     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1178     case _IO('v', 6):
1179 	ival = IOCPARM_IVAL(data);
1180 	data = (caddr_t)&ival;
1181 	/* FALLTHROUGH */
1182 #endif
1183     case VT_WAITACTIVE: 	/* wait for switch to occur */
1184 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1185 	if ((i < sc->first_vty) || (i >= sc->first_vty + sc->vtys))
1186 	    return EINVAL;
1187 	if (i == sc->cur_scp->index)
1188 	    return 0;
1189 	error = tsleep(VTY_WCHAN(sc, i), (PZERO + 1) | PCATCH, "waitvt", 0);
1190 	return error;
1191 
1192     case VT_GETACTIVE:		/* get active vty # */
1193 	*(int *)data = sc->cur_scp->index + 1;
1194 	return 0;
1195 
1196     case VT_GETINDEX:		/* get this vty # */
1197 	*(int *)data = scp->index + 1;
1198 	return 0;
1199 
1200     case VT_LOCKSWITCH:		/* prevent vty switching */
1201 	if ((*(int *)data) & 0x01)
1202 	    sc->flags |= SC_SCRN_VTYLOCK;
1203 	else
1204 	    sc->flags &= ~SC_SCRN_VTYLOCK;
1205 	return 0;
1206 
1207     case KDENABIO:      	/* allow io operations */
1208 	error = priv_check(td, PRIV_IO);
1209 	if (error != 0)
1210 	    return error;
1211 	error = securelevel_gt(td->td_ucred, 0);
1212 	if (error != 0)
1213 		return error;
1214 #ifdef __i386__
1215 	td->td_frame->tf_eflags |= PSL_IOPL;
1216 #elif defined(__amd64__)
1217 	td->td_frame->tf_rflags |= PSL_IOPL;
1218 #endif
1219 	return 0;
1220 
1221     case KDDISABIO:     	/* disallow io operations (default) */
1222 #ifdef __i386__
1223 	td->td_frame->tf_eflags &= ~PSL_IOPL;
1224 #elif defined(__amd64__)
1225 	td->td_frame->tf_rflags &= ~PSL_IOPL;
1226 #endif
1227 	return 0;
1228 
1229 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1230     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1231     case _IO('K', 20):
1232 	ival = IOCPARM_IVAL(data);
1233 	data = (caddr_t)&ival;
1234 	/* FALLTHROUGH */
1235 #endif
1236     case KDSKBSTATE:    	/* set keyboard state (locks) */
1237 	if (*(int *)data & ~LOCK_MASK)
1238 	    return EINVAL;
1239 	scp->status &= ~LOCK_MASK;
1240 	scp->status |= *(int *)data;
1241 	if (scp == sc->cur_scp)
1242 	    update_kbd_state(scp, scp->status, LOCK_MASK);
1243 	return 0;
1244 
1245     case KDGKBSTATE:    	/* get keyboard state (locks) */
1246 	if (scp == sc->cur_scp)
1247 	    save_kbd_state(scp);
1248 	*(int *)data = scp->status & LOCK_MASK;
1249 	return 0;
1250 
1251     case KDGETREPEAT:      	/* get keyboard repeat & delay rates */
1252     case KDSETREPEAT:      	/* set keyboard repeat & delay rates (new) */
1253 	error = kbdd_ioctl(sc->kbd, cmd, data);
1254 	if (error == ENOIOCTL)
1255 	    error = ENODEV;
1256 	return error;
1257 
1258 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1259     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1260     case _IO('K', 67):
1261 	ival = IOCPARM_IVAL(data);
1262 	data = (caddr_t)&ival;
1263 	/* FALLTHROUGH */
1264 #endif
1265     case KDSETRAD:      	/* set keyboard repeat & delay rates (old) */
1266 	if (*(int *)data & ~0x7f)
1267 	    return EINVAL;
1268 	error = kbdd_ioctl(sc->kbd, KDSETRAD, data);
1269 	if (error == ENOIOCTL)
1270 	    error = ENODEV;
1271 	return error;
1272 
1273 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1274     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1275     case _IO('K', 7):
1276 	ival = IOCPARM_IVAL(data);
1277 	data = (caddr_t)&ival;
1278 	/* FALLTHROUGH */
1279 #endif
1280     case KDSKBMODE:     	/* set keyboard mode */
1281 	switch (*(int *)data) {
1282 	case K_XLATE:   	/* switch to XLT ascii mode */
1283 	case K_RAW: 		/* switch to RAW scancode mode */
1284 	case K_CODE: 		/* switch to CODE mode */
1285 	    scp->kbd_mode = *(int *)data;
1286 	    if (scp == sc->cur_scp)
1287 		(void)kbdd_ioctl(sc->kbd, KDSKBMODE, data);
1288 	    return 0;
1289 	default:
1290 	    return EINVAL;
1291 	}
1292 	/* NOT REACHED */
1293 
1294     case KDGKBMODE:     	/* get keyboard mode */
1295 	*(int *)data = scp->kbd_mode;
1296 	return 0;
1297 
1298     case KDGKBINFO:
1299 	error = kbdd_ioctl(sc->kbd, cmd, data);
1300 	if (error == ENOIOCTL)
1301 	    error = ENODEV;
1302 	return error;
1303 
1304 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1305     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1306     case _IO('K', 8):
1307 	ival = IOCPARM_IVAL(data);
1308 	data = (caddr_t)&ival;
1309 	/* FALLTHROUGH */
1310 #endif
1311     case KDMKTONE:      	/* sound the bell */
1312 	if (*(int*)data)
1313 	    sc_bell(scp, (*(int*)data)&0xffff,
1314 		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1315 	else
1316 	    sc_bell(scp, scp->bell_pitch, scp->bell_duration);
1317 	return 0;
1318 
1319 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1320     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1321     case _IO('K', 63):
1322 	ival = IOCPARM_IVAL(data);
1323 	data = (caddr_t)&ival;
1324 	/* FALLTHROUGH */
1325 #endif
1326     case KIOCSOUND:     	/* make tone (*data) hz */
1327 	if (scp == sc->cur_scp) {
1328 	    if (*(int *)data)
1329 		return sc_tone(*(int *)data);
1330 	    else
1331 		return sc_tone(0);
1332 	}
1333 	return 0;
1334 
1335     case KDGKBTYPE:     	/* get keyboard type */
1336 	error = kbdd_ioctl(sc->kbd, cmd, data);
1337 	if (error == ENOIOCTL) {
1338 	    /* always return something? XXX */
1339 	    *(int *)data = 0;
1340 	}
1341 	return 0;
1342 
1343 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1344     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1345     case _IO('K', 66):
1346 	ival = IOCPARM_IVAL(data);
1347 	data = (caddr_t)&ival;
1348 	/* FALLTHROUGH */
1349 #endif
1350     case KDSETLED:      	/* set keyboard LED status */
1351 	if (*(int *)data & ~LED_MASK)	/* FIXME: LOCK_MASK? */
1352 	    return EINVAL;
1353 	scp->status &= ~LED_MASK;
1354 	scp->status |= *(int *)data;
1355 	if (scp == sc->cur_scp)
1356 	    update_kbd_leds(scp, scp->status);
1357 	return 0;
1358 
1359     case KDGETLED:      	/* get keyboard LED status */
1360 	if (scp == sc->cur_scp)
1361 	    save_kbd_state(scp);
1362 	*(int *)data = scp->status & LED_MASK;
1363 	return 0;
1364 
1365     case KBADDKBD:		/* add/remove keyboard to/from mux */
1366     case KBRELKBD:
1367 	error = kbdd_ioctl(sc->kbd, cmd, data);
1368 	if (error == ENOIOCTL)
1369 	    error = ENODEV;
1370 	return error;
1371 
1372 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1373     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1374     case _IO('c', 110):
1375 	ival = IOCPARM_IVAL(data);
1376 	data = (caddr_t)&ival;
1377 	/* FALLTHROUGH */
1378 #endif
1379     case CONS_SETKBD: 		/* set the new keyboard */
1380 	{
1381 	    keyboard_t *newkbd;
1382 
1383 	    s = spltty();
1384 	    newkbd = kbd_get_keyboard(*(int *)data);
1385 	    if (newkbd == NULL) {
1386 		splx(s);
1387 		return EINVAL;
1388 	    }
1389 	    error = 0;
1390 	    if (sc->kbd != newkbd) {
1391 		i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
1392 				 (void *)&sc->keyboard, sckbdevent, sc);
1393 		/* i == newkbd->kb_index */
1394 		if (i >= 0) {
1395 		    if (sc->kbd != NULL) {
1396 			save_kbd_state(sc->cur_scp);
1397 			kbd_release(sc->kbd, (void *)&sc->keyboard);
1398 		    }
1399 		    sc->kbd = kbd_get_keyboard(i); /* sc->kbd == newkbd */
1400 		    sc->keyboard = i;
1401 		    (void)kbdd_ioctl(sc->kbd, KDSKBMODE,
1402 			      (caddr_t)&sc->cur_scp->kbd_mode);
1403 		    update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1404 				     LOCK_MASK);
1405 		} else {
1406 		    error = EPERM;	/* XXX */
1407 		}
1408 	    }
1409 	    splx(s);
1410 	    return error;
1411 	}
1412 
1413     case CONS_RELKBD: 		/* release the current keyboard */
1414 	s = spltty();
1415 	error = 0;
1416 	if (sc->kbd != NULL) {
1417 	    save_kbd_state(sc->cur_scp);
1418 	    error = kbd_release(sc->kbd, (void *)&sc->keyboard);
1419 	    if (error == 0) {
1420 		sc->kbd = NULL;
1421 		sc->keyboard = -1;
1422 	    }
1423 	}
1424 	splx(s);
1425 	return error;
1426 
1427     case CONS_GETTERM:		/* get the current terminal emulator info */
1428 	{
1429 	    sc_term_sw_t *sw;
1430 
1431 	    if (((term_info_t *)data)->ti_index == 0) {
1432 		sw = scp->tsw;
1433 	    } else {
1434 		sw = sc_term_match_by_number(((term_info_t *)data)->ti_index);
1435 	    }
1436 	    if (sw != NULL) {
1437 		strncpy(((term_info_t *)data)->ti_name, sw->te_name,
1438 			sizeof(((term_info_t *)data)->ti_name));
1439 		strncpy(((term_info_t *)data)->ti_desc, sw->te_desc,
1440 			sizeof(((term_info_t *)data)->ti_desc));
1441 		((term_info_t *)data)->ti_flags = 0;
1442 		return 0;
1443 	    } else {
1444 		((term_info_t *)data)->ti_name[0] = '\0';
1445 		((term_info_t *)data)->ti_desc[0] = '\0';
1446 		((term_info_t *)data)->ti_flags = 0;
1447 		return EINVAL;
1448 	    }
1449 	}
1450 
1451     case CONS_SETTERM:		/* set the current terminal emulator */
1452 	s = spltty();
1453 	error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
1454 	/* FIXME: what if scp == sc_console! XXX */
1455 	splx(s);
1456 	return error;
1457 
1458     case GIO_SCRNMAP:   	/* get output translation table */
1459 	bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
1460 	return 0;
1461 
1462     case PIO_SCRNMAP:   	/* set output translation table */
1463 	bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
1464 	for (i=0; i<sizeof(sc->scr_map); i++) {
1465 	    sc->scr_rmap[sc->scr_map[i]] = i;
1466 	}
1467 	return 0;
1468 
1469     case GIO_KEYMAP:		/* get keyboard translation table */
1470     case PIO_KEYMAP:		/* set keyboard translation table */
1471     case OGIO_KEYMAP:		/* get keyboard translation table (compat) */
1472     case OPIO_KEYMAP:		/* set keyboard translation table (compat) */
1473     case GIO_DEADKEYMAP:	/* get accent key translation table */
1474     case PIO_DEADKEYMAP:	/* set accent key translation table */
1475     case GETFKEY:		/* get function key string */
1476     case SETFKEY:		/* set function key string */
1477 	error = kbdd_ioctl(sc->kbd, cmd, data);
1478 	if (error == ENOIOCTL)
1479 	    error = ENODEV;
1480 	return error;
1481 
1482 #ifndef SC_NO_FONT_LOADING
1483 
1484     case PIO_FONT8x8:   	/* set 8x8 dot font */
1485 	if (!ISFONTAVAIL(sc->adp->va_flags))
1486 	    return ENXIO;
1487 	bcopy(data, sc->font_8, 8*256);
1488 	sc->fonts_loaded |= FONT_8;
1489 	/*
1490 	 * FONT KLUDGE
1491 	 * Always use the font page #0. XXX
1492 	 * Don't load if the current font size is not 8x8.
1493 	 */
1494 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
1495 	    sc_load_font(sc->cur_scp, 0, 8, 8, sc->font_8, 0, 256);
1496 	return 0;
1497 
1498     case GIO_FONT8x8:   	/* get 8x8 dot font */
1499 	if (!ISFONTAVAIL(sc->adp->va_flags))
1500 	    return ENXIO;
1501 	if (sc->fonts_loaded & FONT_8) {
1502 	    bcopy(sc->font_8, data, 8*256);
1503 	    return 0;
1504 	}
1505 	else
1506 	    return ENXIO;
1507 
1508     case PIO_FONT8x14:  	/* set 8x14 dot font */
1509 	if (!ISFONTAVAIL(sc->adp->va_flags))
1510 	    return ENXIO;
1511 	bcopy(data, sc->font_14, 14*256);
1512 	sc->fonts_loaded |= FONT_14;
1513 	/*
1514 	 * FONT KLUDGE
1515 	 * Always use the font page #0. XXX
1516 	 * Don't load if the current font size is not 8x14.
1517 	 */
1518 	if (ISTEXTSC(sc->cur_scp)
1519 	    && (sc->cur_scp->font_size >= 14)
1520 	    && (sc->cur_scp->font_size < 16))
1521 	    sc_load_font(sc->cur_scp, 0, 14, 8, sc->font_14, 0, 256);
1522 	return 0;
1523 
1524     case GIO_FONT8x14:  	/* get 8x14 dot font */
1525 	if (!ISFONTAVAIL(sc->adp->va_flags))
1526 	    return ENXIO;
1527 	if (sc->fonts_loaded & FONT_14) {
1528 	    bcopy(sc->font_14, data, 14*256);
1529 	    return 0;
1530 	}
1531 	else
1532 	    return ENXIO;
1533 
1534     case PIO_FONT8x16:  	/* set 8x16 dot font */
1535 	if (!ISFONTAVAIL(sc->adp->va_flags))
1536 	    return ENXIO;
1537 	bcopy(data, sc->font_16, 16*256);
1538 	sc->fonts_loaded |= FONT_16;
1539 	/*
1540 	 * FONT KLUDGE
1541 	 * Always use the font page #0. XXX
1542 	 * Don't load if the current font size is not 8x16.
1543 	 */
1544 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
1545 	    sc_load_font(sc->cur_scp, 0, 16, 8, sc->font_16, 0, 256);
1546 	return 0;
1547 
1548     case GIO_FONT8x16:  	/* get 8x16 dot font */
1549 	if (!ISFONTAVAIL(sc->adp->va_flags))
1550 	    return ENXIO;
1551 	if (sc->fonts_loaded & FONT_16) {
1552 	    bcopy(sc->font_16, data, 16*256);
1553 	    return 0;
1554 	}
1555 	else
1556 	    return ENXIO;
1557 
1558 #endif /* SC_NO_FONT_LOADING */
1559 
1560     default:
1561 	break;
1562     }
1563 
1564     return (ENOIOCTL);
1565 }
1566 
1567 static int
1568 consolectl_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
1569     struct thread *td)
1570 {
1571 
1572 	return sctty_ioctl(dev->si_drv1, cmd, data, td);
1573 }
1574 
1575 static int
1576 consolectl_close(struct cdev *dev, int flags, int mode, struct thread *td)
1577 {
1578 #ifndef SC_NO_SYSMOUSE
1579 	mouse_info_t info;
1580 	memset(&info, 0, sizeof(info));
1581 	info.operation = MOUSE_ACTION;
1582 
1583 	/*
1584 	 * Make sure all buttons are released when moused and other
1585 	 * console daemons exit, so that no buttons are left pressed.
1586 	 */
1587 	(void) sctty_ioctl(dev->si_drv1, CONS_MOUSECTL, (caddr_t)&info, td);
1588 #endif
1589 	return (0);
1590 }
1591 
1592 static void
1593 sc_cnprobe(struct consdev *cp)
1594 {
1595     int unit;
1596     int flags;
1597 
1598     if (!vty_enabled(VTY_SC)) {
1599 	cp->cn_pri = CN_DEAD;
1600 	return;
1601     }
1602 
1603     cp->cn_pri = sc_get_cons_priority(&unit, &flags);
1604 
1605     /* a video card is always required */
1606     if (!scvidprobe(unit, flags, TRUE))
1607 	cp->cn_pri = CN_DEAD;
1608 
1609     /* syscons will become console even when there is no keyboard */
1610     sckbdprobe(unit, flags, TRUE);
1611 
1612     if (cp->cn_pri == CN_DEAD)
1613 	return;
1614 
1615     /* initialize required fields */
1616     strcpy(cp->cn_name, "ttyv0");
1617 }
1618 
1619 static void
1620 sc_cninit(struct consdev *cp)
1621 {
1622     int unit;
1623     int flags;
1624 
1625     sc_get_cons_priority(&unit, &flags);
1626     scinit(unit, flags | SC_KERNEL_CONSOLE);
1627     sc_console_unit = unit;
1628     sc_console = sc_get_stat(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1629     sc_consptr = cp;
1630 }
1631 
1632 static void
1633 sc_cnterm(struct consdev *cp)
1634 {
1635     /* we are not the kernel console any more, release everything */
1636 
1637     if (sc_console_unit < 0)
1638 	return;			/* shouldn't happen */
1639 
1640 #if 0 /* XXX */
1641     sc_clear_screen(sc_console);
1642     sccnupdate(sc_console);
1643 #endif
1644 
1645     scterm(sc_console_unit, SC_KERNEL_CONSOLE);
1646     sc_console_unit = -1;
1647     sc_console = NULL;
1648 }
1649 
1650 static void
1651 sc_cngrab(struct consdev *cp)
1652 {
1653     scr_stat *scp;
1654 
1655     if (!cold &&
1656 	sc_console->sc->cur_scp->index != sc_console->index &&
1657 	sc_console->sc->cur_scp->smode.mode == VT_AUTO &&
1658 	sc_console->smode.mode == VT_AUTO)
1659 	    sc_switch_scr(sc_console->sc, sc_console->index);
1660 
1661     scp = sc_console->sc->cur_scp;
1662 
1663     if (scp->sc->kbd == NULL)
1664 	return;
1665 
1666     if (scp->grabbed++ > 0)
1667 	return;
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     scp->kbd_prev_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 }
1682 
1683 static void
1684 sc_cnungrab(struct consdev *cp)
1685 {
1686     scr_stat *scp;
1687 
1688     scp = sc_console->sc->cur_scp;	/* XXX */
1689     if (scp->sc->kbd == NULL)
1690 	return;
1691 
1692     if (--scp->grabbed > 0)
1693 	return;
1694 
1695     kbdd_poll(scp->sc->kbd, FALSE);
1696 
1697     scp->kbd_mode = scp->kbd_prev_mode;
1698     (void)kbdd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1699     kbdd_disable(scp->sc->kbd);
1700 }
1701 
1702 static void
1703 sc_cnputc(struct consdev *cd, int c)
1704 {
1705     u_char buf[1];
1706     scr_stat *scp = sc_console;
1707 #ifndef SC_NO_HISTORY
1708 #if 0
1709     struct tty *tp;
1710 #endif
1711 #endif /* !SC_NO_HISTORY */
1712     int s;
1713 
1714     /* assert(sc_console != NULL) */
1715 
1716 #ifndef SC_NO_HISTORY
1717     if (scp == scp->sc->cur_scp && scp->status & SLKED) {
1718 	scp->status &= ~SLKED;
1719 	update_kbd_state(scp, scp->status, SLKED);
1720 	if (scp->status & BUFFER_SAVED) {
1721 	    if (!sc_hist_restore(scp))
1722 		sc_remove_cutmarking(scp);
1723 	    scp->status &= ~BUFFER_SAVED;
1724 	    scp->status |= CURSOR_ENABLED;
1725 	    sc_draw_cursor_image(scp);
1726 	}
1727 #if 0
1728 	/*
1729 	 * XXX: Now that TTY's have their own locks, we cannot process
1730 	 * any data after disabling scroll lock. cnputs already holds a
1731 	 * spinlock.
1732 	 */
1733 	tp = SC_DEV(scp->sc, scp->index);
1734 	/* XXX "tp" can be NULL */
1735 	tty_lock(tp);
1736 	if (tty_opened(tp))
1737 	    sctty_outwakeup(tp);
1738 	tty_unlock(tp);
1739 #endif
1740     }
1741 #endif /* !SC_NO_HISTORY */
1742 
1743     buf[0] = c;
1744     sc_puts(scp, buf, 1, 1);
1745 
1746     s = spltty();	/* block sckbdevent and scrn_timer */
1747     sccnupdate(scp);
1748     splx(s);
1749 }
1750 
1751 static int
1752 sc_cngetc(struct consdev *cd)
1753 {
1754     static struct fkeytab fkey;
1755     static int fkeycp;
1756     scr_stat *scp;
1757     const u_char *p;
1758     int s = spltty();	/* block sckbdevent and scrn_timer while we poll */
1759     int c;
1760 
1761     /* assert(sc_console != NULL) */
1762 
1763     /*
1764      * Stop the screen saver and update the screen if necessary.
1765      * What if we have been running in the screen saver code... XXX
1766      */
1767     sc_touch_scrn_saver();
1768     scp = sc_console->sc->cur_scp;	/* XXX */
1769     sccnupdate(scp);
1770 
1771     if (fkeycp < fkey.len) {
1772 	splx(s);
1773 	return fkey.str[fkeycp++];
1774     }
1775 
1776     if (scp->sc->kbd == NULL) {
1777 	splx(s);
1778 	return -1;
1779     }
1780 
1781     c = scgetc(scp->sc, SCGETC_CN | SCGETC_NONBLOCK);
1782 
1783     switch (KEYFLAGS(c)) {
1784     case 0:	/* normal char */
1785 	return KEYCHAR(c);
1786     case FKEY:	/* function key */
1787 	p = (*scp->tsw->te_fkeystr)(scp, c);
1788 	if (p != NULL) {
1789 	    fkey.len = strlen(p);
1790 	    bcopy(p, fkey.str, fkey.len);
1791 	    fkeycp = 1;
1792 	    return fkey.str[0];
1793 	}
1794 	p = kbdd_get_fkeystr(scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
1795 	fkey.len = fkeycp;
1796 	if ((p != NULL) && (fkey.len > 0)) {
1797 	    bcopy(p, fkey.str, fkey.len);
1798 	    fkeycp = 1;
1799 	    return fkey.str[0];
1800 	}
1801 	return c;	/* XXX */
1802     case NOKEY:
1803     case ERRKEY:
1804     default:
1805 	return -1;
1806     }
1807     /* NOT REACHED */
1808 }
1809 
1810 static void
1811 sccnupdate(scr_stat *scp)
1812 {
1813     /* this is a cut-down version of scrn_timer()... */
1814 
1815     if (suspend_in_progress || scp->sc->font_loading_in_progress)
1816 	return;
1817 
1818     if (debugger > 0 || panicstr || shutdown_in_progress) {
1819 	sc_touch_scrn_saver();
1820     } else if (scp != scp->sc->cur_scp) {
1821 	return;
1822     }
1823 
1824     if (!run_scrn_saver)
1825 	scp->sc->flags &= ~SC_SCRN_IDLE;
1826 #ifdef DEV_SPLASH
1827     if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
1828 	if (scp->sc->flags & SC_SCRN_BLANKED)
1829             stop_scrn_saver(scp->sc, current_saver);
1830 #endif
1831 
1832     if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress
1833 	|| scp->sc->switch_in_progress)
1834 	return;
1835     /*
1836      * FIXME: unlike scrn_timer(), we call scrn_update() from here even
1837      * when write_in_progress is non-zero.  XXX
1838      */
1839 
1840     if (!ISGRAPHSC(scp) && !(scp->sc->flags & SC_SCRN_BLANKED))
1841 	scrn_update(scp, TRUE);
1842 }
1843 
1844 static void
1845 scrn_timer(void *arg)
1846 {
1847 #ifndef PC98
1848     static time_t kbd_time_stamp = 0;
1849 #endif
1850     sc_softc_t *sc;
1851     scr_stat *scp;
1852     int again, rate;
1853 
1854     again = (arg != NULL);
1855     if (arg != NULL)
1856 	sc = (sc_softc_t *)arg;
1857     else if (sc_console != NULL)
1858 	sc = sc_console->sc;
1859     else
1860 	return;
1861 
1862     /* find the vty to update */
1863     scp = sc->cur_scp;
1864 
1865     /* don't do anything when we are performing some I/O operations */
1866     if (suspend_in_progress || sc->font_loading_in_progress)
1867 	goto done;
1868 
1869 #ifndef PC98
1870     if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
1871 	/* try to allocate a keyboard automatically */
1872 	if (kbd_time_stamp != time_uptime) {
1873 	    kbd_time_stamp = time_uptime;
1874 	    sc->keyboard = sc_allocate_keyboard(sc, -1);
1875 	    if (sc->keyboard >= 0) {
1876 		sc->kbd = kbd_get_keyboard(sc->keyboard);
1877 		(void)kbdd_ioctl(sc->kbd, KDSKBMODE,
1878 			  (caddr_t)&sc->cur_scp->kbd_mode);
1879 		update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1880 				 LOCK_MASK);
1881 	    }
1882 	}
1883     }
1884 #endif /* PC98 */
1885 
1886     /* should we stop the screen saver? */
1887     if (debugger > 0 || panicstr || shutdown_in_progress)
1888 	sc_touch_scrn_saver();
1889     if (run_scrn_saver) {
1890 	if (time_uptime > sc->scrn_time_stamp + scrn_blank_time)
1891 	    sc->flags |= SC_SCRN_IDLE;
1892 	else
1893 	    sc->flags &= ~SC_SCRN_IDLE;
1894     } else {
1895 	sc->scrn_time_stamp = time_uptime;
1896 	sc->flags &= ~SC_SCRN_IDLE;
1897 	if (scrn_blank_time > 0)
1898 	    run_scrn_saver = TRUE;
1899     }
1900 #ifdef DEV_SPLASH
1901     if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
1902 	if (sc->flags & SC_SCRN_BLANKED)
1903             stop_scrn_saver(sc, current_saver);
1904 #endif
1905 
1906     /* should we just return ? */
1907     if (sc->blink_in_progress || sc->switch_in_progress
1908 	|| sc->write_in_progress)
1909 	goto done;
1910 
1911     /* Update the screen */
1912     scp = sc->cur_scp;		/* cur_scp may have changed... */
1913     if (!ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1914 	scrn_update(scp, TRUE);
1915 
1916 #ifdef DEV_SPLASH
1917     /* should we activate the screen saver? */
1918     if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
1919 	if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
1920 	    (*current_saver)(sc, TRUE);
1921 #endif
1922 
1923 done:
1924     if (again) {
1925 	/*
1926 	 * Use reduced "refresh" rate if we are in graphics and that is not a
1927 	 * graphical screen saver.  In such case we just have nothing to do.
1928 	 */
1929 	if (ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1930 	    rate = 2;
1931 	else
1932 	    rate = 30;
1933 	callout_reset_sbt(&sc->ctimeout, SBT_1S / rate, 0,
1934 	    scrn_timer, sc, C_PREL(1));
1935     }
1936 }
1937 
1938 static int
1939 and_region(int *s1, int *e1, int s2, int e2)
1940 {
1941     if (*e1 < s2 || e2 < *s1)
1942 	return FALSE;
1943     *s1 = imax(*s1, s2);
1944     *e1 = imin(*e1, e2);
1945     return TRUE;
1946 }
1947 
1948 static void
1949 scrn_update(scr_stat *scp, int show_cursor)
1950 {
1951     int start;
1952     int end;
1953     int s;
1954     int e;
1955 
1956     /* assert(scp == scp->sc->cur_scp) */
1957 
1958     SC_VIDEO_LOCK(scp->sc);
1959 
1960 #ifndef SC_NO_CUTPASTE
1961     /* remove the previous mouse pointer image if necessary */
1962     if (scp->status & MOUSE_VISIBLE) {
1963 	s = scp->mouse_pos;
1964 	e = scp->mouse_pos + scp->xsize + 1;
1965 	if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN))
1966 	    || and_region(&s, &e, scp->start, scp->end)
1967 	    || ((scp->status & CURSOR_ENABLED) &&
1968 		(scp->cursor_pos != scp->cursor_oldpos) &&
1969 		(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos)
1970 		 || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) {
1971 	    sc_remove_mouse_image(scp);
1972 	    if (scp->end >= scp->xsize*scp->ysize)
1973 		scp->end = scp->xsize*scp->ysize - 1;
1974 	}
1975     }
1976 #endif /* !SC_NO_CUTPASTE */
1977 
1978 #if 1
1979     /* debug: XXX */
1980     if (scp->end >= scp->xsize*scp->ysize) {
1981 	printf("scrn_update(): scp->end %d > size_of_screen!!\n", scp->end);
1982 	scp->end = scp->xsize*scp->ysize - 1;
1983     }
1984     if (scp->start < 0) {
1985 	printf("scrn_update(): scp->start %d < 0\n", scp->start);
1986 	scp->start = 0;
1987     }
1988 #endif
1989 
1990     /* update screen image */
1991     if (scp->start <= scp->end)  {
1992 	if (scp->mouse_cut_end >= 0) {
1993 	    /* there is a marked region for cut & paste */
1994 	    if (scp->mouse_cut_start <= scp->mouse_cut_end) {
1995 		start = scp->mouse_cut_start;
1996 		end = scp->mouse_cut_end;
1997 	    } else {
1998 		start = scp->mouse_cut_end;
1999 		end = scp->mouse_cut_start - 1;
2000 	    }
2001 	    s = start;
2002 	    e = end;
2003 	    /* does the cut-mark region overlap with the update region? */
2004 	    if (and_region(&s, &e, scp->start, scp->end)) {
2005 		(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
2006 		s = 0;
2007 		e = start - 1;
2008 		if (and_region(&s, &e, scp->start, scp->end))
2009 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
2010 		s = end + 1;
2011 		e = scp->xsize*scp->ysize - 1;
2012 		if (and_region(&s, &e, scp->start, scp->end))
2013 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
2014 	    } else {
2015 		(*scp->rndr->draw)(scp, scp->start,
2016 				   scp->end - scp->start + 1, FALSE);
2017 	    }
2018 	} else {
2019 	    (*scp->rndr->draw)(scp, scp->start,
2020 			       scp->end - scp->start + 1, FALSE);
2021 	}
2022     }
2023 
2024     /* we are not to show the cursor and the mouse pointer... */
2025     if (!show_cursor) {
2026         scp->end = 0;
2027         scp->start = scp->xsize*scp->ysize - 1;
2028 	SC_VIDEO_UNLOCK(scp->sc);
2029 	return;
2030     }
2031 
2032     /* update cursor image */
2033     if (scp->status & CURSOR_ENABLED) {
2034 	s = scp->start;
2035 	e = scp->end;
2036         /* did cursor move since last time ? */
2037         if (scp->cursor_pos != scp->cursor_oldpos) {
2038             /* do we need to remove old cursor image ? */
2039             if (!and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
2040                 sc_remove_cursor_image(scp);
2041             sc_draw_cursor_image(scp);
2042         } else {
2043             if (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos))
2044 		/* cursor didn't move, but has been overwritten */
2045 		sc_draw_cursor_image(scp);
2046 	    else if (scp->curs_attr.flags & CONS_BLINK_CURSOR)
2047 		/* if it's a blinking cursor, update it */
2048 		(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
2049 					   sc_inside_cutmark(scp,
2050 					       scp->cursor_pos));
2051         }
2052     }
2053 
2054 #ifndef SC_NO_CUTPASTE
2055     /* update "pseudo" mouse pointer image */
2056     if (scp->sc->flags & SC_MOUSE_ENABLED) {
2057 	if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
2058 	    scp->status &= ~MOUSE_MOVED;
2059 	    sc_draw_mouse_image(scp);
2060 	}
2061     }
2062 #endif /* SC_NO_CUTPASTE */
2063 
2064     scp->end = 0;
2065     scp->start = scp->xsize*scp->ysize - 1;
2066 
2067     SC_VIDEO_UNLOCK(scp->sc);
2068 }
2069 
2070 #ifdef DEV_SPLASH
2071 static int
2072 scsplash_callback(int event, void *arg)
2073 {
2074     sc_softc_t *sc;
2075     int error;
2076 
2077     sc = (sc_softc_t *)arg;
2078 
2079     switch (event) {
2080     case SPLASH_INIT:
2081 	if (add_scrn_saver(scsplash_saver) == 0) {
2082 	    sc->flags &= ~SC_SAVER_FAILED;
2083 	    run_scrn_saver = TRUE;
2084 	    if (cold && !(boothowto & RB_VERBOSE)) {
2085 		scsplash_stick(TRUE);
2086 		(*current_saver)(sc, TRUE);
2087 	    }
2088 	}
2089 	return 0;
2090 
2091     case SPLASH_TERM:
2092 	if (current_saver == scsplash_saver) {
2093 	    scsplash_stick(FALSE);
2094 	    error = remove_scrn_saver(scsplash_saver);
2095 	    if (error)
2096 		return error;
2097 	}
2098 	return 0;
2099 
2100     default:
2101 	return EINVAL;
2102     }
2103 }
2104 
2105 static void
2106 scsplash_saver(sc_softc_t *sc, int show)
2107 {
2108     static int busy = FALSE;
2109     scr_stat *scp;
2110 
2111     if (busy)
2112 	return;
2113     busy = TRUE;
2114 
2115     scp = sc->cur_scp;
2116     if (show) {
2117 	if (!(sc->flags & SC_SAVER_FAILED)) {
2118 	    if (!(sc->flags & SC_SCRN_BLANKED))
2119 		set_scrn_saver_mode(scp, -1, NULL, 0);
2120 	    switch (splash(sc->adp, TRUE)) {
2121 	    case 0:		/* succeeded */
2122 		break;
2123 	    case EAGAIN:	/* try later */
2124 		restore_scrn_saver_mode(scp, FALSE);
2125 		sc_touch_scrn_saver();		/* XXX */
2126 		break;
2127 	    default:
2128 		sc->flags |= SC_SAVER_FAILED;
2129 		scsplash_stick(FALSE);
2130 		restore_scrn_saver_mode(scp, TRUE);
2131 		printf("scsplash_saver(): failed to put up the image\n");
2132 		break;
2133 	    }
2134 	}
2135     } else if (!sticky_splash) {
2136 	if ((sc->flags & SC_SCRN_BLANKED) && (splash(sc->adp, FALSE) == 0))
2137 	    restore_scrn_saver_mode(scp, TRUE);
2138     }
2139     busy = FALSE;
2140 }
2141 
2142 static int
2143 add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2144 {
2145 #if 0
2146     int error;
2147 
2148     if (current_saver != none_saver) {
2149 	error = remove_scrn_saver(current_saver);
2150 	if (error)
2151 	    return error;
2152     }
2153 #endif
2154     if (current_saver != none_saver)
2155 	return EBUSY;
2156 
2157     run_scrn_saver = FALSE;
2158     saver_mode = CONS_LKM_SAVER;
2159     current_saver = this_saver;
2160     return 0;
2161 }
2162 
2163 static int
2164 remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2165 {
2166     if (current_saver != this_saver)
2167 	return EINVAL;
2168 
2169 #if 0
2170     /*
2171      * In order to prevent `current_saver' from being called by
2172      * the timeout routine `scrn_timer()' while we manipulate
2173      * the saver list, we shall set `current_saver' to `none_saver'
2174      * before stopping the current saver, rather than blocking by `splXX()'.
2175      */
2176     current_saver = none_saver;
2177     if (scrn_blanked)
2178         stop_scrn_saver(this_saver);
2179 #endif
2180 
2181     /* unblank all blanked screens */
2182     wait_scrn_saver_stop(NULL);
2183     if (scrn_blanked)
2184 	return EBUSY;
2185 
2186     current_saver = none_saver;
2187     return 0;
2188 }
2189 
2190 static int
2191 set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
2192 {
2193     int s;
2194 
2195     /* assert(scp == scp->sc->cur_scp) */
2196     s = spltty();
2197     if (!ISGRAPHSC(scp))
2198 	sc_remove_cursor_image(scp);
2199     scp->splash_save_mode = scp->mode;
2200     scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
2201     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
2202     scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
2203     scp->sc->flags |= SC_SCRN_BLANKED;
2204     ++scrn_blanked;
2205     splx(s);
2206     if (mode < 0)
2207 	return 0;
2208     scp->mode = mode;
2209     if (set_mode(scp) == 0) {
2210 	if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
2211 	    scp->status |= GRAPHICS_MODE;
2212 #ifndef SC_NO_PALETTE_LOADING
2213 	if (pal != NULL)
2214 	    vidd_load_palette(scp->sc->adp, pal);
2215 #endif
2216 	sc_set_border(scp, border);
2217 	return 0;
2218     } else {
2219 	s = spltty();
2220 	scp->mode = scp->splash_save_mode;
2221 	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2222 	scp->status |= scp->splash_save_status;
2223 	splx(s);
2224 	return 1;
2225     }
2226 }
2227 
2228 static int
2229 restore_scrn_saver_mode(scr_stat *scp, int changemode)
2230 {
2231     int mode;
2232     int status;
2233     int s;
2234 
2235     /* assert(scp == scp->sc->cur_scp) */
2236     s = spltty();
2237     mode = scp->mode;
2238     status = scp->status;
2239     scp->mode = scp->splash_save_mode;
2240     scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2241     scp->status |= scp->splash_save_status;
2242     scp->sc->flags &= ~SC_SCRN_BLANKED;
2243     if (!changemode) {
2244 	if (!ISGRAPHSC(scp))
2245 	    sc_draw_cursor_image(scp);
2246 	--scrn_blanked;
2247 	splx(s);
2248 	return 0;
2249     }
2250     if (set_mode(scp) == 0) {
2251 #ifndef SC_NO_PALETTE_LOADING
2252 #ifdef SC_PIXEL_MODE
2253 	if (scp->sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
2254 	    vidd_load_palette(scp->sc->adp, scp->sc->palette2);
2255 	else
2256 #endif
2257 	vidd_load_palette(scp->sc->adp, scp->sc->palette);
2258 #endif
2259 	--scrn_blanked;
2260 	splx(s);
2261 	return 0;
2262     } else {
2263 	scp->mode = mode;
2264 	scp->status = status;
2265 	splx(s);
2266 	return 1;
2267     }
2268 }
2269 
2270 static void
2271 stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
2272 {
2273     (*saver)(sc, FALSE);
2274     run_scrn_saver = FALSE;
2275     /* the screen saver may have chosen not to stop after all... */
2276     if (sc->flags & SC_SCRN_BLANKED)
2277 	return;
2278 
2279     mark_all(sc->cur_scp);
2280     if (sc->delayed_next_scr)
2281 	sc_switch_scr(sc, sc->delayed_next_scr - 1);
2282     if (debugger == 0)
2283 	wakeup(&scrn_blanked);
2284 }
2285 
2286 static int
2287 wait_scrn_saver_stop(sc_softc_t *sc)
2288 {
2289     int error = 0;
2290 
2291     while (scrn_blanked > 0) {
2292 	run_scrn_saver = FALSE;
2293 	if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
2294 	    error = 0;
2295 	    break;
2296 	}
2297 	error = tsleep(&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
2298 	if ((error != 0) && (error != ERESTART))
2299 	    break;
2300     }
2301     run_scrn_saver = FALSE;
2302     return error;
2303 }
2304 #endif /* DEV_SPLASH */
2305 
2306 void
2307 sc_touch_scrn_saver(void)
2308 {
2309     scsplash_stick(FALSE);
2310     run_scrn_saver = FALSE;
2311 }
2312 
2313 int
2314 sc_switch_scr(sc_softc_t *sc, u_int next_scr)
2315 {
2316     scr_stat *cur_scp;
2317     struct tty *tp;
2318     struct proc *p;
2319     int s;
2320 
2321     DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
2322 
2323     if (sc->cur_scp == NULL)
2324 	return (0);
2325 
2326     /* prevent switch if previously requested */
2327     if (sc->flags & SC_SCRN_VTYLOCK) {
2328 	    sc_bell(sc->cur_scp, sc->cur_scp->bell_pitch,
2329 		sc->cur_scp->bell_duration);
2330 	    return EPERM;
2331     }
2332 
2333     /* delay switch if the screen is blanked or being updated */
2334     if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress
2335 	|| sc->blink_in_progress) {
2336 	sc->delayed_next_scr = next_scr + 1;
2337 	sc_touch_scrn_saver();
2338 	DPRINTF(5, ("switch delayed\n"));
2339 	return 0;
2340     }
2341     sc->delayed_next_scr = 0;
2342 
2343     s = spltty();
2344     cur_scp = sc->cur_scp;
2345 
2346     /* we are in the middle of the vty switching process... */
2347     if (sc->switch_in_progress
2348 	&& (cur_scp->smode.mode == VT_PROCESS)
2349 	&& cur_scp->proc) {
2350 	p = pfind(cur_scp->pid);
2351 	if (cur_scp->proc != p) {
2352 	    if (p)
2353 		PROC_UNLOCK(p);
2354 	    /*
2355 	     * The controlling process has died!!.  Do some clean up.
2356 	     * NOTE:`cur_scp->proc' and `cur_scp->smode.mode'
2357 	     * are not reset here yet; they will be cleared later.
2358 	     */
2359 	    DPRINTF(5, ("cur_scp controlling process %d died, ",
2360 	       cur_scp->pid));
2361 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2362 		/*
2363 		 * Force the previous switch to finish, but return now
2364 		 * with error.
2365 		 */
2366 		DPRINTF(5, ("reset WAIT_REL, "));
2367 		finish_vt_rel(cur_scp, TRUE, &s);
2368 		splx(s);
2369 		DPRINTF(5, ("finishing previous switch\n"));
2370 		return EINVAL;
2371 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2372 		/* let's assume screen switch has been completed. */
2373 		DPRINTF(5, ("reset WAIT_ACQ, "));
2374 		finish_vt_acq(cur_scp);
2375 	    } else {
2376 		/*
2377 	 	 * We are in between screen release and acquisition, and
2378 		 * reached here via scgetc() or scrn_timer() which has
2379 		 * interrupted exchange_scr(). Don't do anything stupid.
2380 		 */
2381 		DPRINTF(5, ("waiting nothing, "));
2382 	    }
2383 	} else {
2384 	    if (p)
2385 		PROC_UNLOCK(p);
2386 	    /*
2387 	     * The controlling process is alive, but not responding...
2388 	     * It is either buggy or it may be just taking time.
2389 	     * The following code is a gross kludge to cope with this
2390 	     * problem for which there is no clean solution. XXX
2391 	     */
2392 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2393 		switch (sc->switch_in_progress++) {
2394 		case 1:
2395 		    break;
2396 		case 2:
2397 		    DPRINTF(5, ("sending relsig again, "));
2398 		    signal_vt_rel(cur_scp);
2399 		    break;
2400 		case 3:
2401 		    break;
2402 		case 4:
2403 		default:
2404 		    /*
2405 		     * Act as if the controlling program returned
2406 		     * VT_FALSE.
2407 		     */
2408 		    DPRINTF(5, ("force reset WAIT_REL, "));
2409 		    finish_vt_rel(cur_scp, FALSE, &s);
2410 		    splx(s);
2411 		    DPRINTF(5, ("act as if VT_FALSE was seen\n"));
2412 		    return EINVAL;
2413 		}
2414 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2415 		switch (sc->switch_in_progress++) {
2416 		case 1:
2417 		    break;
2418 		case 2:
2419 		    DPRINTF(5, ("sending acqsig again, "));
2420 		    signal_vt_acq(cur_scp);
2421 		    break;
2422 		case 3:
2423 		    break;
2424 		case 4:
2425 		default:
2426 		     /* clear the flag and finish the previous switch */
2427 		    DPRINTF(5, ("force reset WAIT_ACQ, "));
2428 		    finish_vt_acq(cur_scp);
2429 		    break;
2430 		}
2431 	    }
2432 	}
2433     }
2434 
2435     /*
2436      * Return error if an invalid argument is given, or vty switch
2437      * is still in progress.
2438      */
2439     if ((next_scr < sc->first_vty) || (next_scr >= sc->first_vty + sc->vtys)
2440 	|| sc->switch_in_progress) {
2441 	splx(s);
2442 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2443 	DPRINTF(5, ("error 1\n"));
2444 	return EINVAL;
2445     }
2446 
2447     /*
2448      * Don't allow switching away from the graphics mode vty
2449      * if the switch mode is VT_AUTO, unless the next vty is the same
2450      * as the current or the current vty has been closed (but showing).
2451      */
2452     tp = SC_DEV(sc, cur_scp->index);
2453     if ((cur_scp->index != next_scr)
2454 	&& tty_opened_ns(tp)
2455 	&& (cur_scp->smode.mode == VT_AUTO)
2456 	&& ISGRAPHSC(cur_scp)) {
2457 	splx(s);
2458 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2459 	DPRINTF(5, ("error, graphics mode\n"));
2460 	return EINVAL;
2461     }
2462 
2463     /*
2464      * Is the wanted vty open? Don't allow switching to a closed vty.
2465      * If we are in DDB, don't switch to a vty in the VT_PROCESS mode.
2466      * Note that we always allow the user to switch to the kernel
2467      * console even if it is closed.
2468      */
2469     if ((sc_console == NULL) || (next_scr != sc_console->index)) {
2470 	tp = SC_DEV(sc, next_scr);
2471 	if (!tty_opened_ns(tp)) {
2472 	    splx(s);
2473 	    sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2474 	    DPRINTF(5, ("error 2, requested vty isn't open!\n"));
2475 	    return EINVAL;
2476 	}
2477 	if ((debugger > 0) && (SC_STAT(tp)->smode.mode == VT_PROCESS)) {
2478 	    splx(s);
2479 	    DPRINTF(5, ("error 3, requested vty is in the VT_PROCESS mode\n"));
2480 	    return EINVAL;
2481 	}
2482     }
2483 
2484     /* this is the start of vty switching process... */
2485     ++sc->switch_in_progress;
2486     sc->old_scp = cur_scp;
2487     sc->new_scp = sc_get_stat(SC_DEV(sc, next_scr));
2488     if (sc->new_scp == sc->old_scp) {
2489 	sc->switch_in_progress = 0;
2490 	/*
2491 	 * XXX wakeup() locks the scheduler lock which will hang if
2492 	 * the lock is in an in-between state, e.g., when we stop at
2493 	 * a breakpoint at fork_exit.  It has always been wrong to call
2494 	 * wakeup() when the debugger is active.  In RELENG_4, wakeup()
2495 	 * is supposed to be locked by splhigh(), but the debugger may
2496 	 * be invoked at splhigh().
2497 	 */
2498 	if (debugger == 0)
2499 	    wakeup(VTY_WCHAN(sc,next_scr));
2500 	splx(s);
2501 	DPRINTF(5, ("switch done (new == old)\n"));
2502 	return 0;
2503     }
2504 
2505     /* has controlling process died? */
2506     vt_proc_alive(sc->old_scp);
2507     vt_proc_alive(sc->new_scp);
2508 
2509     /* wait for the controlling process to release the screen, if necessary */
2510     if (signal_vt_rel(sc->old_scp)) {
2511 	splx(s);
2512 	return 0;
2513     }
2514 
2515     /* go set up the new vty screen */
2516     splx(s);
2517     exchange_scr(sc);
2518     s = spltty();
2519 
2520     /* wake up processes waiting for this vty */
2521     if (debugger == 0)
2522 	wakeup(VTY_WCHAN(sc,next_scr));
2523 
2524     /* wait for the controlling process to acknowledge, if necessary */
2525     if (signal_vt_acq(sc->cur_scp)) {
2526 	splx(s);
2527 	return 0;
2528     }
2529 
2530     sc->switch_in_progress = 0;
2531     if (sc->unit == sc_console_unit)
2532 	cnavailable(sc_consptr,  TRUE);
2533     splx(s);
2534     DPRINTF(5, ("switch done\n"));
2535 
2536     return 0;
2537 }
2538 
2539 static int
2540 do_switch_scr(sc_softc_t *sc, int s)
2541 {
2542     vt_proc_alive(sc->new_scp);
2543 
2544     splx(s);
2545     exchange_scr(sc);
2546     s = spltty();
2547     /* sc->cur_scp == sc->new_scp */
2548     wakeup(VTY_WCHAN(sc,sc->cur_scp->index));
2549 
2550     /* wait for the controlling process to acknowledge, if necessary */
2551     if (!signal_vt_acq(sc->cur_scp)) {
2552 	sc->switch_in_progress = 0;
2553 	if (sc->unit == sc_console_unit)
2554 	    cnavailable(sc_consptr,  TRUE);
2555     }
2556 
2557     return s;
2558 }
2559 
2560 static int
2561 vt_proc_alive(scr_stat *scp)
2562 {
2563     struct proc *p;
2564 
2565     if (scp->proc) {
2566 	if ((p = pfind(scp->pid)) != NULL)
2567 	    PROC_UNLOCK(p);
2568 	if (scp->proc == p)
2569 	    return TRUE;
2570 	scp->proc = NULL;
2571 	scp->smode.mode = VT_AUTO;
2572 	DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
2573     }
2574     return FALSE;
2575 }
2576 
2577 static int
2578 signal_vt_rel(scr_stat *scp)
2579 {
2580     if (scp->smode.mode != VT_PROCESS)
2581 	return FALSE;
2582     scp->status |= SWITCH_WAIT_REL;
2583     PROC_LOCK(scp->proc);
2584     kern_psignal(scp->proc, scp->smode.relsig);
2585     PROC_UNLOCK(scp->proc);
2586     DPRINTF(5, ("sending relsig to %d\n", scp->pid));
2587     return TRUE;
2588 }
2589 
2590 static int
2591 signal_vt_acq(scr_stat *scp)
2592 {
2593     if (scp->smode.mode != VT_PROCESS)
2594 	return FALSE;
2595     if (scp->sc->unit == sc_console_unit)
2596 	cnavailable(sc_consptr,  FALSE);
2597     scp->status |= SWITCH_WAIT_ACQ;
2598     PROC_LOCK(scp->proc);
2599     kern_psignal(scp->proc, scp->smode.acqsig);
2600     PROC_UNLOCK(scp->proc);
2601     DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
2602     return TRUE;
2603 }
2604 
2605 static int
2606 finish_vt_rel(scr_stat *scp, int release, int *s)
2607 {
2608     if (scp == scp->sc->old_scp && scp->status & SWITCH_WAIT_REL) {
2609 	scp->status &= ~SWITCH_WAIT_REL;
2610 	if (release)
2611 	    *s = do_switch_scr(scp->sc, *s);
2612 	else
2613 	    scp->sc->switch_in_progress = 0;
2614 	return 0;
2615     }
2616     return EINVAL;
2617 }
2618 
2619 static int
2620 finish_vt_acq(scr_stat *scp)
2621 {
2622     if (scp == scp->sc->new_scp && scp->status & SWITCH_WAIT_ACQ) {
2623 	scp->status &= ~SWITCH_WAIT_ACQ;
2624 	scp->sc->switch_in_progress = 0;
2625 	return 0;
2626     }
2627     return EINVAL;
2628 }
2629 
2630 static void
2631 exchange_scr(sc_softc_t *sc)
2632 {
2633     scr_stat *scp;
2634 
2635     /* save the current state of video and keyboard */
2636     sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
2637     if (!ISGRAPHSC(sc->old_scp))
2638 	sc_remove_cursor_image(sc->old_scp);
2639     if (sc->old_scp->kbd_mode == K_XLATE)
2640 	save_kbd_state(sc->old_scp);
2641 
2642     /* set up the video for the new screen */
2643     scp = sc->cur_scp = sc->new_scp;
2644 #ifdef PC98
2645     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp) || ISUNKNOWNSC(sc->new_scp))
2646 #else
2647     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
2648 #endif
2649 	set_mode(scp);
2650 #ifndef __sparc64__
2651     else
2652 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2653 		    (void *)sc->adp->va_window, FALSE);
2654 #endif
2655     scp->status |= MOUSE_HIDDEN;
2656     sc_move_cursor(scp, scp->xpos, scp->ypos);
2657     if (!ISGRAPHSC(scp))
2658 	sc_set_cursor_image(scp);
2659 #ifndef SC_NO_PALETTE_LOADING
2660     if (ISGRAPHSC(sc->old_scp)) {
2661 #ifdef SC_PIXEL_MODE
2662 	if (sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
2663 	    vidd_load_palette(sc->adp, sc->palette2);
2664 	else
2665 #endif
2666 	vidd_load_palette(sc->adp, sc->palette);
2667     }
2668 #endif
2669     sc_set_border(scp, scp->border);
2670 
2671     /* set up the keyboard for the new screen */
2672     if (sc->old_scp->kbd_mode != scp->kbd_mode)
2673 	(void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
2674     update_kbd_state(scp, scp->status, LOCK_MASK);
2675 
2676     mark_all(scp);
2677 }
2678 
2679 static void
2680 sc_puts(scr_stat *scp, u_char *buf, int len, int kernel)
2681 {
2682     int need_unlock = 0;
2683 
2684 #ifdef DEV_SPLASH
2685     /* make screensaver happy */
2686     if (!sticky_splash && scp == scp->sc->cur_scp && !sc_saver_keyb_only)
2687 	run_scrn_saver = FALSE;
2688 #endif
2689 
2690     if (scp->tsw) {
2691 	if (!kdb_active && !mtx_owned(&scp->scr_lock)) {
2692 		need_unlock = 1;
2693 		mtx_lock_spin(&scp->scr_lock);
2694 	}
2695 	(*scp->tsw->te_puts)(scp, buf, len, kernel);
2696 	if (need_unlock)
2697 		mtx_unlock_spin(&scp->scr_lock);
2698     }
2699 
2700     if (scp->sc->delayed_next_scr)
2701 	sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
2702 }
2703 
2704 void
2705 sc_draw_cursor_image(scr_stat *scp)
2706 {
2707     /* assert(scp == scp->sc->cur_scp); */
2708     SC_VIDEO_LOCK(scp->sc);
2709     (*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
2710 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, TRUE,
2711 			      sc_inside_cutmark(scp, scp->cursor_pos));
2712     scp->cursor_oldpos = scp->cursor_pos;
2713     SC_VIDEO_UNLOCK(scp->sc);
2714 }
2715 
2716 void
2717 sc_remove_cursor_image(scr_stat *scp)
2718 {
2719     /* assert(scp == scp->sc->cur_scp); */
2720     SC_VIDEO_LOCK(scp->sc);
2721     (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
2722 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, FALSE,
2723 			      sc_inside_cutmark(scp, scp->cursor_oldpos));
2724     SC_VIDEO_UNLOCK(scp->sc);
2725 }
2726 
2727 static void
2728 update_cursor_image(scr_stat *scp)
2729 {
2730     /* assert(scp == scp->sc->cur_scp); */
2731     sc_remove_cursor_image(scp);
2732     sc_set_cursor_image(scp);
2733     sc_draw_cursor_image(scp);
2734 }
2735 
2736 void
2737 sc_set_cursor_image(scr_stat *scp)
2738 {
2739     scp->curs_attr.flags = scp->curr_curs_attr.flags;
2740     if (scp->curs_attr.flags & CONS_HIDDEN_CURSOR) {
2741 	/* hidden cursor is internally represented as zero-height underline */
2742 	scp->curs_attr.flags = CONS_CHAR_CURSOR;
2743 	scp->curs_attr.base = scp->curs_attr.height = 0;
2744     } else if (scp->curs_attr.flags & CONS_CHAR_CURSOR) {
2745 	scp->curs_attr.base = imin(scp->curr_curs_attr.base,
2746 				  scp->font_size - 1);
2747 	scp->curs_attr.height = imin(scp->curr_curs_attr.height,
2748 				    scp->font_size - scp->curs_attr.base);
2749     } else {	/* block cursor */
2750 	scp->curs_attr.base = 0;
2751 	scp->curs_attr.height = scp->font_size;
2752     }
2753 
2754     /* assert(scp == scp->sc->cur_scp); */
2755     SC_VIDEO_LOCK(scp->sc);
2756     (*scp->rndr->set_cursor)(scp, scp->curs_attr.base, scp->curs_attr.height,
2757 			     scp->curs_attr.flags & CONS_BLINK_CURSOR);
2758     SC_VIDEO_UNLOCK(scp->sc);
2759 }
2760 
2761 static void
2762 change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2763 {
2764     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp))
2765 	sc_remove_cursor_image(scp);
2766 
2767     if (base >= 0)
2768 	scp->curr_curs_attr.base = base;
2769     if (height >= 0)
2770 	scp->curr_curs_attr.height = height;
2771     if (flags & CONS_RESET_CURSOR)
2772 	scp->curr_curs_attr = scp->dflt_curs_attr;
2773     else
2774 	scp->curr_curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2775 
2776     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp)) {
2777 	sc_set_cursor_image(scp);
2778 	sc_draw_cursor_image(scp);
2779     }
2780 }
2781 
2782 void
2783 sc_change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2784 {
2785     sc_softc_t *sc;
2786     struct tty *tp;
2787     int s;
2788     int i;
2789 
2790     s = spltty();
2791     if ((flags != -1) && (flags & CONS_LOCAL_CURSOR)) {
2792 	/* local (per vty) change */
2793 	change_cursor_shape(scp, flags, base, height);
2794 	splx(s);
2795 	return;
2796     }
2797 
2798     /* global change */
2799     sc = scp->sc;
2800     if (base >= 0)
2801 	sc->curs_attr.base = base;
2802     if (height >= 0)
2803 	sc->curs_attr.height = height;
2804     if (flags != -1) {
2805 	if (flags & CONS_RESET_CURSOR)
2806 	    sc->curs_attr = sc->dflt_curs_attr;
2807 	else
2808 	    sc->curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2809     }
2810 
2811     for (i = sc->first_vty; i < sc->first_vty + sc->vtys; ++i) {
2812 	if ((tp = SC_DEV(sc, i)) == NULL)
2813 	    continue;
2814 	if ((scp = sc_get_stat(tp)) == NULL)
2815 	    continue;
2816 	scp->dflt_curs_attr = sc->curs_attr;
2817 	change_cursor_shape(scp, CONS_RESET_CURSOR, -1, -1);
2818     }
2819     splx(s);
2820 }
2821 
2822 static void
2823 scinit(int unit, int flags)
2824 {
2825 
2826     /*
2827      * When syscons is being initialized as the kernel console, malloc()
2828      * is not yet functional, because various kernel structures has not been
2829      * fully initialized yet.  Therefore, we need to declare the following
2830      * static buffers for the console.  This is less than ideal,
2831      * but is necessry evil for the time being.  XXX
2832      */
2833 #ifdef PC98
2834     static u_short sc_buffer[ROW*COL*2];/* XXX */
2835 #else
2836     static u_short sc_buffer[ROW*COL];	/* XXX */
2837 #endif
2838 #ifndef SC_NO_FONT_LOADING
2839     static u_char font_8[256*8];
2840     static u_char font_14[256*14];
2841     static u_char font_16[256*16];
2842 #endif
2843 
2844     sc_softc_t *sc;
2845     scr_stat *scp;
2846     video_adapter_t *adp;
2847     int col;
2848     int row;
2849     int i;
2850 
2851     /* one time initialization */
2852     if (init_done == COLD)
2853 	sc_get_bios_values(&bios_value);
2854     init_done = WARM;
2855 
2856     /*
2857      * Allocate resources.  Even if we are being called for the second
2858      * time, we must allocate them again, because they might have
2859      * disappeared...
2860      */
2861     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2862     if ((sc->flags & SC_INIT_DONE) == 0)
2863 	SC_VIDEO_LOCKINIT(sc);
2864 
2865     adp = NULL;
2866     if (sc->adapter >= 0) {
2867 	vid_release(sc->adp, (void *)&sc->adapter);
2868 	adp = sc->adp;
2869 	sc->adp = NULL;
2870     }
2871     if (sc->keyboard >= 0) {
2872 	DPRINTF(5, ("sc%d: releasing kbd%d\n", unit, sc->keyboard));
2873 	i = kbd_release(sc->kbd, (void *)&sc->keyboard);
2874 	DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
2875 	if (sc->kbd != NULL) {
2876 	    DPRINTF(5, ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
2877 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2878 	}
2879 	sc->kbd = NULL;
2880     }
2881     sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
2882     sc->adp = vid_get_adapter(sc->adapter);
2883     /* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
2884 
2885     sc->keyboard = sc_allocate_keyboard(sc, unit);
2886     DPRINTF(1, ("sc%d: keyboard %d\n", unit, sc->keyboard));
2887 
2888     sc->kbd = kbd_get_keyboard(sc->keyboard);
2889     if (sc->kbd != NULL) {
2890 	DPRINTF(1, ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n",
2891 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2892     }
2893 
2894     if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
2895 
2896 	sc->initial_mode = sc->adp->va_initial_mode;
2897 
2898 #ifndef SC_NO_FONT_LOADING
2899 	if (flags & SC_KERNEL_CONSOLE) {
2900 	    sc->font_8 = font_8;
2901 	    sc->font_14 = font_14;
2902 	    sc->font_16 = font_16;
2903 	} else if (sc->font_8 == NULL) {
2904 	    /* assert(sc_malloc) */
2905 	    sc->font_8 = malloc(sizeof(font_8), M_DEVBUF, M_WAITOK);
2906 	    sc->font_14 = malloc(sizeof(font_14), M_DEVBUF, M_WAITOK);
2907 	    sc->font_16 = malloc(sizeof(font_16), M_DEVBUF, M_WAITOK);
2908 	}
2909 #endif
2910 
2911 	/* extract the hardware cursor location and hide the cursor for now */
2912 	vidd_read_hw_cursor(sc->adp, &col, &row);
2913 	vidd_set_hw_cursor(sc->adp, -1, -1);
2914 
2915 	/* set up the first console */
2916 	sc->first_vty = unit*MAXCONS;
2917 	sc->vtys = MAXCONS;		/* XXX: should be configurable */
2918 	if (flags & SC_KERNEL_CONSOLE) {
2919 	    /*
2920 	     * Set up devs structure but don't use it yet, calling make_dev()
2921 	     * might panic kernel.  Wait for sc_attach_unit() to actually
2922 	     * create the devices.
2923 	     */
2924 	    sc->dev = main_devs;
2925 	    scp = &main_console;
2926 	    init_scp(sc, sc->first_vty, scp);
2927 	    sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize, scp->ysize,
2928 			(void *)sc_buffer, FALSE);
2929 
2930 	    /* move cursors to the initial positions */
2931 	    if (col >= scp->xsize)
2932 		col = 0;
2933 	    if (row >= scp->ysize)
2934 		row = scp->ysize - 1;
2935 	    scp->xpos = col;
2936 	    scp->ypos = row;
2937 	    scp->cursor_pos = scp->cursor_oldpos = row*scp->xsize + col;
2938 
2939 	    if (sc_init_emulator(scp, SC_DFLT_TERM))
2940 		sc_init_emulator(scp, "*");
2941 	    (*scp->tsw->te_default_attr)(scp,
2942 					 user_default.std_color,
2943 					 user_default.rev_color);
2944 	} else {
2945 	    /* assert(sc_malloc) */
2946 	    sc->dev = malloc(sizeof(struct tty *)*sc->vtys, M_DEVBUF,
2947 	        M_WAITOK|M_ZERO);
2948 	    sc->dev[0] = sc_alloc_tty(0, unit * MAXCONS);
2949 	    scp = alloc_scp(sc, sc->first_vty);
2950 	    SC_STAT(sc->dev[0]) = scp;
2951 	}
2952 	sc->cur_scp = scp;
2953 
2954 #ifndef __sparc64__
2955 	/* copy screen to temporary buffer */
2956 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2957 		    (void *)scp->sc->adp->va_window, FALSE);
2958 	if (ISTEXTSC(scp))
2959 	    sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0, scp->xsize*scp->ysize);
2960 #endif
2961 
2962 	if (bios_value.cursor_end < scp->font_size)
2963 	    sc->dflt_curs_attr.base = scp->font_size -
2964 					  bios_value.cursor_end - 1;
2965 	else
2966 	    sc->dflt_curs_attr.base = 0;
2967 	i = bios_value.cursor_end - bios_value.cursor_start + 1;
2968 	sc->dflt_curs_attr.height = imin(i, scp->font_size);
2969 	sc->dflt_curs_attr.flags = 0;
2970 	sc->curs_attr = sc->dflt_curs_attr;
2971 	scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
2972 
2973 #ifndef SC_NO_SYSMOUSE
2974 	sc_mouse_move(scp, scp->xpixel/2, scp->ypixel/2);
2975 #endif
2976 	if (!ISGRAPHSC(scp)) {
2977     	    sc_set_cursor_image(scp);
2978     	    sc_draw_cursor_image(scp);
2979 	}
2980 
2981 	/* save font and palette */
2982 #ifndef SC_NO_FONT_LOADING
2983 	sc->fonts_loaded = 0;
2984 	if (ISFONTAVAIL(sc->adp->va_flags)) {
2985 #ifdef SC_DFLT_FONT
2986 	    bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
2987 	    bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
2988 	    bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
2989 	    sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
2990 	    if (scp->font_size < 14) {
2991 		sc_load_font(scp, 0, 8, 8, sc->font_8, 0, 256);
2992 	    } else if (scp->font_size >= 16) {
2993 		sc_load_font(scp, 0, 16, 8, sc->font_16, 0, 256);
2994 	    } else {
2995 		sc_load_font(scp, 0, 14, 8, sc->font_14, 0, 256);
2996 	    }
2997 #else /* !SC_DFLT_FONT */
2998 	    if (scp->font_size < 14) {
2999 		sc_save_font(scp, 0, 8, 8, sc->font_8, 0, 256);
3000 		sc->fonts_loaded = FONT_8;
3001 	    } else if (scp->font_size >= 16) {
3002 		sc_save_font(scp, 0, 16, 8, sc->font_16, 0, 256);
3003 		sc->fonts_loaded = FONT_16;
3004 	    } else {
3005 		sc_save_font(scp, 0, 14, 8, sc->font_14, 0, 256);
3006 		sc->fonts_loaded = FONT_14;
3007 	    }
3008 #endif /* SC_DFLT_FONT */
3009 	    /* FONT KLUDGE: always use the font page #0. XXX */
3010 	    sc_show_font(scp, 0);
3011 	}
3012 #endif /* !SC_NO_FONT_LOADING */
3013 
3014 #ifndef SC_NO_PALETTE_LOADING
3015 	vidd_save_palette(sc->adp, sc->palette);
3016 #ifdef SC_PIXEL_MODE
3017 	for (i = 0; i < sizeof(sc->palette2); i++)
3018 		sc->palette2[i] = i / 3;
3019 #endif
3020 #endif
3021 
3022 #ifdef DEV_SPLASH
3023 	if (!(sc->flags & SC_SPLASH_SCRN)) {
3024 	    /* we are ready to put up the splash image! */
3025 	    splash_init(sc->adp, scsplash_callback, sc);
3026 	    sc->flags |= SC_SPLASH_SCRN;
3027 	}
3028 #endif
3029     }
3030 
3031     /* the rest is not necessary, if we have done it once */
3032     if (sc->flags & SC_INIT_DONE)
3033 	return;
3034 
3035     /* initialize mapscrn arrays to a one to one map */
3036     for (i = 0; i < sizeof(sc->scr_map); i++)
3037 	sc->scr_map[i] = sc->scr_rmap[i] = i;
3038 #ifdef PC98
3039     sc->scr_map[0x5c] = (u_char)0xfc;	/* for backslash */
3040 #endif
3041 
3042     sc->flags |= SC_INIT_DONE;
3043 }
3044 
3045 static void
3046 scterm(int unit, int flags)
3047 {
3048     sc_softc_t *sc;
3049     scr_stat *scp;
3050 
3051     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
3052     if (sc == NULL)
3053 	return;			/* shouldn't happen */
3054 
3055 #ifdef DEV_SPLASH
3056     /* this console is no longer available for the splash screen */
3057     if (sc->flags & SC_SPLASH_SCRN) {
3058 	splash_term(sc->adp);
3059 	sc->flags &= ~SC_SPLASH_SCRN;
3060     }
3061 #endif
3062 
3063 #if 0 /* XXX */
3064     /* move the hardware cursor to the upper-left corner */
3065     vidd_set_hw_cursor(sc->adp, 0, 0);
3066 #endif
3067 
3068     /* release the keyboard and the video card */
3069     if (sc->keyboard >= 0)
3070 	kbd_release(sc->kbd, &sc->keyboard);
3071     if (sc->adapter >= 0)
3072 	vid_release(sc->adp, &sc->adapter);
3073 
3074     /* stop the terminal emulator, if any */
3075     scp = sc_get_stat(sc->dev[0]);
3076     if (scp->tsw)
3077 	(*scp->tsw->te_term)(scp, &scp->ts);
3078     if (scp->ts != NULL)
3079 	free(scp->ts, M_DEVBUF);
3080     mtx_destroy(&scp->scr_lock);
3081 
3082     /* clear the structure */
3083     if (!(flags & SC_KERNEL_CONSOLE)) {
3084 	/* XXX: We need delete_dev() for this */
3085 	free(sc->dev, M_DEVBUF);
3086 #if 0
3087 	/* XXX: We need a ttyunregister for this */
3088 	free(sc->tty, M_DEVBUF);
3089 #endif
3090 #ifndef SC_NO_FONT_LOADING
3091 	free(sc->font_8, M_DEVBUF);
3092 	free(sc->font_14, M_DEVBUF);
3093 	free(sc->font_16, M_DEVBUF);
3094 #endif
3095 	/* XXX vtb, history */
3096     }
3097     bzero(sc, sizeof(*sc));
3098     sc->keyboard = -1;
3099     sc->adapter = -1;
3100 }
3101 
3102 static void
3103 scshutdown(__unused void *arg, __unused int howto)
3104 {
3105 
3106 	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3107 	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3108 	KASSERT(sc_console->sc->cur_scp != NULL,
3109 	    ("sc_console->sc->cur_scp != NULL"));
3110 
3111 	sc_touch_scrn_saver();
3112 	if (!cold &&
3113 	    sc_console->sc->cur_scp->index != sc_console->index &&
3114 	    sc_console->sc->cur_scp->smode.mode == VT_AUTO &&
3115 	    sc_console->smode.mode == VT_AUTO)
3116 		sc_switch_scr(sc_console->sc, sc_console->index);
3117 	shutdown_in_progress = TRUE;
3118 }
3119 
3120 static void
3121 scsuspend(__unused void *arg)
3122 {
3123 	int retry;
3124 
3125 	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3126 	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3127 	KASSERT(sc_console->sc->cur_scp != NULL,
3128 	    ("sc_console->sc->cur_scp != NULL"));
3129 
3130 	sc_susp_scr = sc_console->sc->cur_scp->index;
3131 	if (sc_no_suspend_vtswitch ||
3132 	    sc_susp_scr == sc_console->index) {
3133 		sc_touch_scrn_saver();
3134 		sc_susp_scr = -1;
3135 		return;
3136 	}
3137 	for (retry = 0; retry < 10; retry++) {
3138 		sc_switch_scr(sc_console->sc, sc_console->index);
3139 		if (!sc_console->sc->switch_in_progress)
3140 			break;
3141 		pause("scsuspend", hz);
3142 	}
3143 	suspend_in_progress = TRUE;
3144 }
3145 
3146 static void
3147 scresume(__unused void *arg)
3148 {
3149 
3150 	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3151 	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3152 	KASSERT(sc_console->sc->cur_scp != NULL,
3153 	    ("sc_console->sc->cur_scp != NULL"));
3154 
3155 	suspend_in_progress = FALSE;
3156 	if (sc_susp_scr < 0) {
3157 		update_font(sc_console->sc->cur_scp);
3158 		return;
3159 	}
3160 	sc_switch_scr(sc_console->sc, sc_susp_scr);
3161 }
3162 
3163 int
3164 sc_clean_up(scr_stat *scp)
3165 {
3166 #ifdef DEV_SPLASH
3167     int error;
3168 #endif
3169 
3170     if (scp->sc->flags & SC_SCRN_BLANKED) {
3171 	sc_touch_scrn_saver();
3172 #ifdef DEV_SPLASH
3173 	if ((error = wait_scrn_saver_stop(scp->sc)))
3174 	    return error;
3175 #endif
3176     }
3177     scp->status |= MOUSE_HIDDEN;
3178     sc_remove_mouse_image(scp);
3179     sc_remove_cutmarking(scp);
3180     return 0;
3181 }
3182 
3183 void
3184 sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
3185 {
3186     sc_vtb_t new;
3187     sc_vtb_t old;
3188 
3189     old = scp->vtb;
3190     sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
3191     if (!discard && (old.vtb_flags & VTB_VALID)) {
3192 	/* retain the current cursor position and buffer contants */
3193 	scp->cursor_oldpos = scp->cursor_pos;
3194 	/*
3195 	 * This works only if the old buffer has the same size as or larger
3196 	 * than the new one. XXX
3197 	 */
3198 	sc_vtb_copy(&old, 0, &new, 0, scp->xsize*scp->ysize);
3199 	scp->vtb = new;
3200     } else {
3201 	scp->vtb = new;
3202 	sc_vtb_destroy(&old);
3203     }
3204 
3205 #ifndef SC_NO_SYSMOUSE
3206     /* move the mouse cursor at the center of the screen */
3207     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
3208 #endif
3209 }
3210 
3211 static scr_stat
3212 *alloc_scp(sc_softc_t *sc, int vty)
3213 {
3214     scr_stat *scp;
3215 
3216     /* assert(sc_malloc) */
3217 
3218     scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
3219     init_scp(sc, vty, scp);
3220 
3221     sc_alloc_scr_buffer(scp, TRUE, TRUE);
3222     if (sc_init_emulator(scp, SC_DFLT_TERM))
3223 	sc_init_emulator(scp, "*");
3224 
3225 #ifndef SC_NO_CUTPASTE
3226     sc_alloc_cut_buffer(scp, TRUE);
3227 #endif
3228 
3229 #ifndef SC_NO_HISTORY
3230     sc_alloc_history_buffer(scp, 0, 0, TRUE);
3231 #endif
3232 
3233     return scp;
3234 }
3235 
3236 static void
3237 init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
3238 {
3239     video_info_t info;
3240 
3241     bzero(scp, sizeof(*scp));
3242 
3243     scp->index = vty;
3244     scp->sc = sc;
3245     scp->status = 0;
3246     scp->mode = sc->initial_mode;
3247     vidd_get_info(sc->adp, scp->mode, &info);
3248     if (info.vi_flags & V_INFO_GRAPHICS) {
3249 	scp->status |= GRAPHICS_MODE;
3250 	scp->xpixel = info.vi_width;
3251 	scp->ypixel = info.vi_height;
3252 	scp->xsize = info.vi_width/info.vi_cwidth;
3253 	scp->ysize = info.vi_height/info.vi_cheight;
3254 	scp->font_size = 0;
3255 	scp->font = NULL;
3256     } else {
3257 	scp->xsize = info.vi_width;
3258 	scp->ysize = info.vi_height;
3259 	scp->xpixel = scp->xsize*info.vi_cwidth;
3260 	scp->ypixel = scp->ysize*info.vi_cheight;
3261     }
3262 
3263     scp->font_size = info.vi_cheight;
3264     scp->font_width = info.vi_cwidth;
3265 #ifndef SC_NO_FONT_LOADING
3266     if (info.vi_cheight < 14)
3267 	scp->font = sc->font_8;
3268     else if (info.vi_cheight >= 16)
3269 	scp->font = sc->font_16;
3270     else
3271 	scp->font = sc->font_14;
3272 #else
3273     scp->font = NULL;
3274 #endif
3275 
3276     sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
3277 #ifndef __sparc64__
3278     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
3279 #endif
3280     scp->xoff = scp->yoff = 0;
3281     scp->xpos = scp->ypos = 0;
3282     scp->start = scp->xsize * scp->ysize - 1;
3283     scp->end = 0;
3284     scp->tsw = NULL;
3285     scp->ts = NULL;
3286     scp->rndr = NULL;
3287     scp->border = (SC_NORM_ATTR >> 4) & 0x0f;
3288     scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
3289     scp->mouse_cut_start = scp->xsize*scp->ysize;
3290     scp->mouse_cut_end = -1;
3291     scp->mouse_signal = 0;
3292     scp->mouse_pid = 0;
3293     scp->mouse_proc = NULL;
3294     scp->kbd_mode = K_XLATE;
3295     scp->bell_pitch = bios_value.bell_pitch;
3296     scp->bell_duration = BELL_DURATION;
3297     scp->status |= (bios_value.shift_state & NLKED);
3298     scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
3299     scp->pid = 0;
3300     scp->proc = NULL;
3301     scp->smode.mode = VT_AUTO;
3302     scp->history = NULL;
3303     scp->history_pos = 0;
3304     scp->history_size = 0;
3305 
3306     mtx_init(&scp->scr_lock, "scrlock", NULL, MTX_SPIN);
3307 }
3308 
3309 int
3310 sc_init_emulator(scr_stat *scp, char *name)
3311 {
3312     sc_term_sw_t *sw;
3313     sc_rndr_sw_t *rndr;
3314     void *p;
3315     int error;
3316 
3317     if (name == NULL)	/* if no name is given, use the current emulator */
3318 	sw = scp->tsw;
3319     else		/* ...otherwise find the named emulator */
3320 	sw = sc_term_match(name);
3321     if (sw == NULL)
3322 	return EINVAL;
3323 
3324     rndr = NULL;
3325     if (strcmp(sw->te_renderer, "*") != 0) {
3326 	rndr = sc_render_match(scp, sw->te_renderer,
3327 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3328     }
3329     if (rndr == NULL) {
3330 	rndr = sc_render_match(scp, scp->sc->adp->va_name,
3331 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3332 	if (rndr == NULL)
3333 	    return ENODEV;
3334     }
3335 
3336     if (sw == scp->tsw) {
3337 	error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
3338 	scp->rndr = rndr;
3339 	scp->rndr->init(scp);
3340 	sc_clear_screen(scp);
3341 	/* assert(error == 0); */
3342 	return error;
3343     }
3344 
3345     if (sc_malloc && (sw->te_size > 0))
3346 	p = malloc(sw->te_size, M_DEVBUF, M_NOWAIT);
3347     else
3348 	p = NULL;
3349     error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
3350     if (error)
3351 	return error;
3352 
3353     if (scp->tsw)
3354 	(*scp->tsw->te_term)(scp, &scp->ts);
3355     if (scp->ts != NULL)
3356 	free(scp->ts, M_DEVBUF);
3357     scp->tsw = sw;
3358     scp->ts = p;
3359     scp->rndr = rndr;
3360     scp->rndr->init(scp);
3361 
3362     /* XXX */
3363     (*sw->te_default_attr)(scp, user_default.std_color, user_default.rev_color);
3364     sc_clear_screen(scp);
3365 
3366     return 0;
3367 }
3368 
3369 /*
3370  * scgetc(flags) - get character from keyboard.
3371  * If flags & SCGETC_CN, then avoid harmful side effects.
3372  * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
3373  * return NOKEY if there is nothing there.
3374  */
3375 static u_int
3376 scgetc(sc_softc_t *sc, u_int flags)
3377 {
3378     scr_stat *scp;
3379 #ifndef SC_NO_HISTORY
3380     struct tty *tp;
3381 #endif
3382     u_int c;
3383     int this_scr;
3384     int f;
3385     int i;
3386 
3387     if (sc->kbd == NULL)
3388 	return NOKEY;
3389 
3390 next_code:
3391 #if 1
3392     /* I don't like this, but... XXX */
3393     if (flags & SCGETC_CN)
3394 	sccnupdate(sc->cur_scp);
3395 #endif
3396     scp = sc->cur_scp;
3397     /* first see if there is something in the keyboard port */
3398     for (;;) {
3399 	c = kbdd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
3400 	if (c == ERRKEY) {
3401 	    if (!(flags & SCGETC_CN))
3402 		sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3403 	} else if (c == NOKEY)
3404 	    return c;
3405 	else
3406 	    break;
3407     }
3408 
3409     /* make screensaver happy */
3410     if (!(c & RELKEY))
3411 	sc_touch_scrn_saver();
3412 
3413     if (!(flags & SCGETC_CN))
3414 	random_harvest_queue(&c, sizeof(c), 1, RANDOM_KEYBOARD);
3415 
3416     if (scp->kbd_mode != K_XLATE)
3417 	return KEYCHAR(c);
3418 
3419     /* if scroll-lock pressed allow history browsing */
3420     if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
3421 
3422 	scp->status &= ~CURSOR_ENABLED;
3423 	sc_remove_cursor_image(scp);
3424 
3425 #ifndef SC_NO_HISTORY
3426 	if (!(scp->status & BUFFER_SAVED)) {
3427 	    scp->status |= BUFFER_SAVED;
3428 	    sc_hist_save(scp);
3429 	}
3430 	switch (c) {
3431 	/* FIXME: key codes */
3432 	case SPCLKEY | FKEY | F(49):  /* home key */
3433 	    sc_remove_cutmarking(scp);
3434 	    sc_hist_home(scp);
3435 	    goto next_code;
3436 
3437 	case SPCLKEY | FKEY | F(57):  /* end key */
3438 	    sc_remove_cutmarking(scp);
3439 	    sc_hist_end(scp);
3440 	    goto next_code;
3441 
3442 	case SPCLKEY | FKEY | F(50):  /* up arrow key */
3443 	    sc_remove_cutmarking(scp);
3444 	    if (sc_hist_up_line(scp))
3445 		if (!(flags & SCGETC_CN))
3446 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3447 	    goto next_code;
3448 
3449 	case SPCLKEY | FKEY | F(58):  /* down arrow key */
3450 	    sc_remove_cutmarking(scp);
3451 	    if (sc_hist_down_line(scp))
3452 		if (!(flags & SCGETC_CN))
3453 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3454 	    goto next_code;
3455 
3456 	case SPCLKEY | FKEY | F(51):  /* page up key */
3457 	    sc_remove_cutmarking(scp);
3458 	    for (i=0; i<scp->ysize; i++)
3459 	    if (sc_hist_up_line(scp)) {
3460 		if (!(flags & SCGETC_CN))
3461 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3462 		break;
3463 	    }
3464 	    goto next_code;
3465 
3466 	case SPCLKEY | FKEY | F(59):  /* page down key */
3467 	    sc_remove_cutmarking(scp);
3468 	    for (i=0; i<scp->ysize; i++)
3469 	    if (sc_hist_down_line(scp)) {
3470 		if (!(flags & SCGETC_CN))
3471 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3472 		break;
3473 	    }
3474 	    goto next_code;
3475 	}
3476 #endif /* SC_NO_HISTORY */
3477     }
3478 
3479     /*
3480      * Process and consume special keys here.  Return a plain char code
3481      * or a char code with the META flag or a function key code.
3482      */
3483     if (c & RELKEY) {
3484 	/* key released */
3485 	/* goto next_code */
3486     } else {
3487 	/* key pressed */
3488 	if (c & SPCLKEY) {
3489 	    c &= ~SPCLKEY;
3490 	    switch (KEYCHAR(c)) {
3491 	    /* LOCKING KEYS */
3492 	    case NLK: case CLK: case ALK:
3493 		break;
3494 	    case SLK:
3495 		(void)kbdd_ioctl(sc->kbd, KDGKBSTATE, (caddr_t)&f);
3496 		if (f & SLKED) {
3497 		    scp->status |= SLKED;
3498 		} else {
3499 		    if (scp->status & SLKED) {
3500 			scp->status &= ~SLKED;
3501 #ifndef SC_NO_HISTORY
3502 			if (scp->status & BUFFER_SAVED) {
3503 			    if (!sc_hist_restore(scp))
3504 				sc_remove_cutmarking(scp);
3505 			    scp->status &= ~BUFFER_SAVED;
3506 			    scp->status |= CURSOR_ENABLED;
3507 			    sc_draw_cursor_image(scp);
3508 			}
3509 			tp = SC_DEV(sc, scp->index);
3510 			if (!kdb_active && tty_opened_ns(tp))
3511 			    sctty_outwakeup(tp);
3512 #endif
3513 		    }
3514 		}
3515 		break;
3516 
3517 	    case PASTE:
3518 #ifndef SC_NO_CUTPASTE
3519 		sc_mouse_paste(scp);
3520 #endif
3521 		break;
3522 
3523 	    /* NON-LOCKING KEYS */
3524 	    case NOP:
3525 	    case LSH:  case RSH:  case LCTR: case RCTR:
3526 	    case LALT: case RALT: case ASH:  case META:
3527 		break;
3528 
3529 	    case BTAB:
3530 		if (!(sc->flags & SC_SCRN_BLANKED))
3531 		    return c;
3532 		break;
3533 
3534 	    case SPSC:
3535 #ifdef DEV_SPLASH
3536 		/* force activatation/deactivation of the screen saver */
3537 		if (!(sc->flags & SC_SCRN_BLANKED)) {
3538 		    run_scrn_saver = TRUE;
3539 		    sc->scrn_time_stamp -= scrn_blank_time;
3540 		}
3541 		if (cold) {
3542 		    /*
3543 		     * While devices are being probed, the screen saver need
3544 		     * to be invoked explictly. XXX
3545 		     */
3546 		    if (sc->flags & SC_SCRN_BLANKED) {
3547 			scsplash_stick(FALSE);
3548 			stop_scrn_saver(sc, current_saver);
3549 		    } else {
3550 			if (!ISGRAPHSC(scp)) {
3551 			    scsplash_stick(TRUE);
3552 			    (*current_saver)(sc, TRUE);
3553 			}
3554 		    }
3555 		}
3556 #endif /* DEV_SPLASH */
3557 		break;
3558 
3559 	    case RBT:
3560 #ifndef SC_DISABLE_REBOOT
3561 		if (enable_reboot)
3562 			shutdown_nice(0);
3563 #endif
3564 		break;
3565 
3566 	    case HALT:
3567 #ifndef SC_DISABLE_REBOOT
3568 		if (enable_reboot)
3569 			shutdown_nice(RB_HALT);
3570 #endif
3571 		break;
3572 
3573 	    case PDWN:
3574 #ifndef SC_DISABLE_REBOOT
3575 		if (enable_reboot)
3576 			shutdown_nice(RB_HALT|RB_POWEROFF);
3577 #endif
3578 		break;
3579 
3580 	    case SUSP:
3581 		power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
3582 		break;
3583 	    case STBY:
3584 		power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
3585 		break;
3586 
3587 	    case DBG:
3588 #ifndef SC_DISABLE_KDBKEY
3589 		if (enable_kdbkey)
3590 			kdb_break();
3591 #endif
3592 		break;
3593 
3594 	    case PNC:
3595 		if (enable_panic_key)
3596 			panic("Forced by the panic key");
3597 		break;
3598 
3599 	    case NEXT:
3600 		this_scr = scp->index;
3601 		for (i = (this_scr - sc->first_vty + 1)%sc->vtys;
3602 			sc->first_vty + i != this_scr;
3603 			i = (i + 1)%sc->vtys) {
3604 		    struct tty *tp = SC_DEV(sc, sc->first_vty + i);
3605 		    if (tty_opened_ns(tp)) {
3606 			sc_switch_scr(scp->sc, sc->first_vty + i);
3607 			break;
3608 		    }
3609 		}
3610 		break;
3611 
3612 	    case PREV:
3613 		this_scr = scp->index;
3614 		for (i = (this_scr - sc->first_vty + sc->vtys - 1)%sc->vtys;
3615 			sc->first_vty + i != this_scr;
3616 			i = (i + sc->vtys - 1)%sc->vtys) {
3617 		    struct tty *tp = SC_DEV(sc, sc->first_vty + i);
3618 		    if (tty_opened_ns(tp)) {
3619 			sc_switch_scr(scp->sc, sc->first_vty + i);
3620 			break;
3621 		    }
3622 		}
3623 		break;
3624 
3625 	    default:
3626 		if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
3627 		    sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
3628 		    break;
3629 		}
3630 		/* assert(c & FKEY) */
3631 		if (!(sc->flags & SC_SCRN_BLANKED))
3632 		    return c;
3633 		break;
3634 	    }
3635 	    /* goto next_code */
3636 	} else {
3637 	    /* regular keys (maybe MKEY is set) */
3638 #if !defined(SC_DISABLE_KDBKEY) && defined(KDB)
3639 	    if (enable_kdbkey)
3640 		kdb_alt_break(c, &sc->sc_altbrk);
3641 #endif
3642 	    if (!(sc->flags & SC_SCRN_BLANKED))
3643 		return c;
3644 	}
3645     }
3646 
3647     goto next_code;
3648 }
3649 
3650 static int
3651 sctty_mmap(struct tty *tp, vm_ooffset_t offset, vm_paddr_t *paddr,
3652     int nprot, vm_memattr_t *memattr)
3653 {
3654     scr_stat *scp;
3655 
3656     scp = sc_get_stat(tp);
3657     if (scp != scp->sc->cur_scp)
3658 	return -1;
3659     return vidd_mmap(scp->sc->adp, offset, paddr, nprot, memattr);
3660 }
3661 
3662 static void
3663 update_font(scr_stat *scp)
3664 {
3665 #ifndef SC_NO_FONT_LOADING
3666     /* load appropriate font */
3667     if (!(scp->status & GRAPHICS_MODE)) {
3668 	if (!(scp->status & PIXEL_MODE) && ISFONTAVAIL(scp->sc->adp->va_flags)) {
3669 	    if (scp->font_size < 14) {
3670 		if (scp->sc->fonts_loaded & FONT_8)
3671 		    sc_load_font(scp, 0, 8, 8, scp->sc->font_8, 0, 256);
3672 	    } else if (scp->font_size >= 16) {
3673 		if (scp->sc->fonts_loaded & FONT_16)
3674 		    sc_load_font(scp, 0, 16, 8, scp->sc->font_16, 0, 256);
3675 	    } else {
3676 		if (scp->sc->fonts_loaded & FONT_14)
3677 		    sc_load_font(scp, 0, 14, 8, scp->sc->font_14, 0, 256);
3678 	    }
3679 	    /*
3680 	     * FONT KLUDGE:
3681 	     * This is an interim kludge to display correct font.
3682 	     * Always use the font page #0 on the video plane 2.
3683 	     * Somehow we cannot show the font in other font pages on
3684 	     * some video cards... XXX
3685 	     */
3686 	    sc_show_font(scp, 0);
3687 	}
3688 	mark_all(scp);
3689     }
3690 #endif /* !SC_NO_FONT_LOADING */
3691 }
3692 
3693 static int
3694 save_kbd_state(scr_stat *scp)
3695 {
3696     int state;
3697     int error;
3698 
3699     error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3700     if (error == ENOIOCTL)
3701 	error = ENODEV;
3702     if (error == 0) {
3703 	scp->status &= ~LOCK_MASK;
3704 	scp->status |= state;
3705     }
3706     return error;
3707 }
3708 
3709 static int
3710 update_kbd_state(scr_stat *scp, int new_bits, int mask)
3711 {
3712     int state;
3713     int error;
3714 
3715     if (mask != LOCK_MASK) {
3716 	error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3717 	if (error == ENOIOCTL)
3718 	    error = ENODEV;
3719 	if (error)
3720 	    return error;
3721 	state &= ~mask;
3722 	state |= new_bits & mask;
3723     } else {
3724 	state = new_bits & LOCK_MASK;
3725     }
3726     error = kbdd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
3727     if (error == ENOIOCTL)
3728 	error = ENODEV;
3729     return error;
3730 }
3731 
3732 static int
3733 update_kbd_leds(scr_stat *scp, int which)
3734 {
3735     int error;
3736 
3737     which &= LOCK_MASK;
3738     error = kbdd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
3739     if (error == ENOIOCTL)
3740 	error = ENODEV;
3741     return error;
3742 }
3743 
3744 int
3745 set_mode(scr_stat *scp)
3746 {
3747     video_info_t info;
3748 
3749     /* reject unsupported mode */
3750     if (vidd_get_info(scp->sc->adp, scp->mode, &info))
3751 	return 1;
3752 
3753     /* if this vty is not currently showing, do nothing */
3754     if (scp != scp->sc->cur_scp)
3755 	return 0;
3756 
3757     /* setup video hardware for the given mode */
3758     vidd_set_mode(scp->sc->adp, scp->mode);
3759     scp->rndr->init(scp);
3760 #ifndef __sparc64__
3761     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3762 		(void *)scp->sc->adp->va_window, FALSE);
3763 #endif
3764 
3765     update_font(scp);
3766 
3767     sc_set_border(scp, scp->border);
3768     sc_set_cursor_image(scp);
3769 
3770     return 0;
3771 }
3772 
3773 void
3774 sc_set_border(scr_stat *scp, int color)
3775 {
3776     SC_VIDEO_LOCK(scp->sc);
3777     (*scp->rndr->draw_border)(scp, color);
3778     SC_VIDEO_UNLOCK(scp->sc);
3779 }
3780 
3781 #ifndef SC_NO_FONT_LOADING
3782 void
3783 sc_load_font(scr_stat *scp, int page, int size, int width, u_char *buf,
3784 	     int base, int count)
3785 {
3786     sc_softc_t *sc;
3787 
3788     sc = scp->sc;
3789     sc->font_loading_in_progress = TRUE;
3790     vidd_load_font(sc->adp, page, size, width, buf, base, count);
3791     sc->font_loading_in_progress = FALSE;
3792 }
3793 
3794 void
3795 sc_save_font(scr_stat *scp, int page, int size, int width, u_char *buf,
3796 	     int base, int count)
3797 {
3798     sc_softc_t *sc;
3799 
3800     sc = scp->sc;
3801     sc->font_loading_in_progress = TRUE;
3802     vidd_save_font(sc->adp, page, size, width, buf, base, count);
3803     sc->font_loading_in_progress = FALSE;
3804 }
3805 
3806 void
3807 sc_show_font(scr_stat *scp, int page)
3808 {
3809     vidd_show_font(scp->sc->adp, page);
3810 }
3811 #endif /* !SC_NO_FONT_LOADING */
3812 
3813 void
3814 sc_paste(scr_stat *scp, const u_char *p, int count)
3815 {
3816     struct tty *tp;
3817     u_char *rmap;
3818 
3819     tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
3820     if (!tty_opened_ns(tp))
3821 	return;
3822     rmap = scp->sc->scr_rmap;
3823     for (; count > 0; --count)
3824 	ttydisc_rint(tp, rmap[*p++], 0);
3825     ttydisc_rint_done(tp);
3826 }
3827 
3828 void
3829 sc_respond(scr_stat *scp, const u_char *p, int count, int wakeup)
3830 {
3831     struct tty *tp;
3832 
3833     tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
3834     if (!tty_opened_ns(tp))
3835 	return;
3836     ttydisc_rint_simple(tp, p, count);
3837     if (wakeup) {
3838 	/* XXX: we can't always call ttydisc_rint_done() here! */
3839 	ttydisc_rint_done(tp);
3840     }
3841 }
3842 
3843 void
3844 sc_bell(scr_stat *scp, int pitch, int duration)
3845 {
3846     if (cold || shutdown_in_progress || !enable_bell)
3847 	return;
3848 
3849     if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
3850 	return;
3851 
3852     if (scp->sc->flags & SC_VISUAL_BELL) {
3853 	if (scp->sc->blink_in_progress)
3854 	    return;
3855 	scp->sc->blink_in_progress = 3;
3856 	if (scp != scp->sc->cur_scp)
3857 	    scp->sc->blink_in_progress += 2;
3858 	blink_screen(scp->sc->cur_scp);
3859     } else if (duration != 0 && pitch != 0) {
3860 	if (scp != scp->sc->cur_scp)
3861 	    pitch *= 2;
3862 	sysbeep(1193182 / pitch, duration);
3863     }
3864 }
3865 
3866 static void
3867 blink_screen(void *arg)
3868 {
3869     scr_stat *scp = arg;
3870     struct tty *tp;
3871 
3872     if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
3873 	scp->sc->blink_in_progress = 0;
3874     	mark_all(scp);
3875 	tp = SC_DEV(scp->sc, scp->index);
3876 	if (tty_opened_ns(tp))
3877 	    sctty_outwakeup(tp);
3878 	if (scp->sc->delayed_next_scr)
3879 	    sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
3880     }
3881     else {
3882 	(*scp->rndr->draw)(scp, 0, scp->xsize*scp->ysize,
3883 			   scp->sc->blink_in_progress & 1);
3884 	scp->sc->blink_in_progress--;
3885 	callout_reset_sbt(&scp->sc->cblink, SBT_1S / 15, 0,
3886 	    blink_screen, scp, C_PREL(0));
3887     }
3888 }
3889 
3890 /*
3891  * Until sc_attach_unit() gets called no dev structures will be available
3892  * to store the per-screen current status.  This is the case when the
3893  * kernel is initially booting and needs access to its console.  During
3894  * this early phase of booting the console's current status is kept in
3895  * one statically defined scr_stat structure, and any pointers to the
3896  * dev structures will be NULL.
3897  */
3898 
3899 static scr_stat *
3900 sc_get_stat(struct tty *tp)
3901 {
3902 	if (tp == NULL)
3903 		return (&main_console);
3904 	return (SC_STAT(tp));
3905 }
3906 
3907 /*
3908  * Allocate active keyboard. Try to allocate "kbdmux" keyboard first, and,
3909  * if found, add all non-busy keyboards to "kbdmux". Otherwise look for
3910  * any keyboard.
3911  */
3912 
3913 static int
3914 sc_allocate_keyboard(sc_softc_t *sc, int unit)
3915 {
3916 	int		 idx0, idx;
3917 	keyboard_t	*k0, *k;
3918 	keyboard_info_t	 ki;
3919 
3920 	idx0 = kbd_allocate("kbdmux", -1, (void *)&sc->keyboard, sckbdevent, sc);
3921 	if (idx0 != -1) {
3922 		k0 = kbd_get_keyboard(idx0);
3923 
3924 		for (idx = kbd_find_keyboard2("*", -1, 0);
3925 		     idx != -1;
3926 		     idx = kbd_find_keyboard2("*", -1, idx + 1)) {
3927 			k = kbd_get_keyboard(idx);
3928 
3929 			if (idx == idx0 || KBD_IS_BUSY(k))
3930 				continue;
3931 
3932 			bzero(&ki, sizeof(ki));
3933 			strcpy(ki.kb_name, k->kb_name);
3934 			ki.kb_unit = k->kb_unit;
3935 
3936 			(void)kbdd_ioctl(k0, KBADDKBD, (caddr_t) &ki);
3937 		}
3938 	} else
3939 		idx0 = kbd_allocate("*", unit, (void *)&sc->keyboard, sckbdevent, sc);
3940 
3941 	return (idx0);
3942 }
3943