xref: /freebsd/sys/dev/syscons/syscons.c (revision 7661de35d15f582ab33e3bd6b8d909601557e436)
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 TUNABLE_INT("hw.syscons.sc_no_suspend_vtswitch", &sc_no_suspend_vtswitch);
158 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RW,
159     &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
160 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
161 #include "font.h"
162 #endif
163 
164 	tsw_ioctl_t	*sc_user_ioctl;
165 
166 static	bios_values_t	bios_value;
167 
168 static	int		enable_panic_key;
169 SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
170 	   0, "Enable panic via keypress specified in kbdmap(5)");
171 
172 #define SC_CONSOLECTL	255
173 
174 #define VTY_WCHAN(sc, vty) (&SC_DEV(sc, vty))
175 
176 static	int		debugger;
177 
178 /* prototypes */
179 static int sc_allocate_keyboard(sc_softc_t *sc, int unit);
180 static int scvidprobe(int unit, int flags, int cons);
181 static int sckbdprobe(int unit, int flags, int cons);
182 static void scmeminit(void *arg);
183 static int scdevtounit(struct tty *tp);
184 static kbd_callback_func_t sckbdevent;
185 static void scinit(int unit, int flags);
186 static scr_stat *sc_get_stat(struct tty *tp);
187 static void scterm(int unit, int flags);
188 static void scshutdown(void *, int);
189 static void scsuspend(void *);
190 static void scresume(void *);
191 static u_int scgetc(sc_softc_t *sc, u_int flags);
192 static void sc_puts(scr_stat *scp, u_char *buf, int len, int kernel);
193 #define SCGETC_CN	1
194 #define SCGETC_NONBLOCK	2
195 static void sccnupdate(scr_stat *scp);
196 static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
197 static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
198 static timeout_t scrn_timer;
199 static int and_region(int *s1, int *e1, int s2, int e2);
200 static void scrn_update(scr_stat *scp, int show_cursor);
201 
202 #ifdef DEV_SPLASH
203 static int scsplash_callback(int event, void *arg);
204 static void scsplash_saver(sc_softc_t *sc, int show);
205 static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
206 static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
207 static int set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border);
208 static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
209 static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
210 static int wait_scrn_saver_stop(sc_softc_t *sc);
211 #define scsplash_stick(stick)		(sticky_splash = (stick))
212 #else /* !DEV_SPLASH */
213 #define scsplash_stick(stick)
214 #endif /* DEV_SPLASH */
215 
216 static int do_switch_scr(sc_softc_t *sc, int s);
217 static int vt_proc_alive(scr_stat *scp);
218 static int signal_vt_rel(scr_stat *scp);
219 static int signal_vt_acq(scr_stat *scp);
220 static int finish_vt_rel(scr_stat *scp, int release, int *s);
221 static int finish_vt_acq(scr_stat *scp);
222 static void exchange_scr(sc_softc_t *sc);
223 static void update_cursor_image(scr_stat *scp);
224 static void change_cursor_shape(scr_stat *scp, int flags, int base, int height);
225 static void update_font(scr_stat *);
226 static int save_kbd_state(scr_stat *scp);
227 static int update_kbd_state(scr_stat *scp, int state, int mask);
228 static int update_kbd_leds(scr_stat *scp, int which);
229 static timeout_t blink_screen;
230 static struct tty *sc_alloc_tty(int, int);
231 
232 static cn_probe_t	sc_cnprobe;
233 static cn_init_t	sc_cninit;
234 static cn_term_t	sc_cnterm;
235 static cn_getc_t	sc_cngetc;
236 static cn_putc_t	sc_cnputc;
237 static cn_grab_t	sc_cngrab;
238 static cn_ungrab_t	sc_cnungrab;
239 
240 CONSOLE_DRIVER(sc);
241 
242 static	tsw_open_t	sctty_open;
243 static	tsw_close_t	sctty_close;
244 static	tsw_outwakeup_t	sctty_outwakeup;
245 static	tsw_ioctl_t	sctty_ioctl;
246 static	tsw_mmap_t	sctty_mmap;
247 
248 static struct ttydevsw sc_ttydevsw = {
249 	.tsw_open	= sctty_open,
250 	.tsw_close	= sctty_close,
251 	.tsw_outwakeup	= sctty_outwakeup,
252 	.tsw_ioctl	= sctty_ioctl,
253 	.tsw_mmap	= sctty_mmap,
254 };
255 
256 static d_ioctl_t	consolectl_ioctl;
257 static d_close_t	consolectl_close;
258 
259 static struct cdevsw consolectl_devsw = {
260 	.d_version	= D_VERSION,
261 	.d_flags	= D_NEEDGIANT | D_TRACKCLOSE,
262 	.d_ioctl	= consolectl_ioctl,
263 	.d_close	= consolectl_close,
264 	.d_name		= "consolectl",
265 };
266 
267 int
268 sc_probe_unit(int unit, int flags)
269 {
270     if (!scvidprobe(unit, flags, FALSE)) {
271 	if (bootverbose)
272 	    printf("%s%d: no video adapter found.\n", SC_DRIVER_NAME, unit);
273 	return ENXIO;
274     }
275 
276     /* syscons will be attached even when there is no keyboard */
277     sckbdprobe(unit, flags, FALSE);
278 
279     return 0;
280 }
281 
282 /* probe video adapters, return TRUE if found */
283 static int
284 scvidprobe(int unit, int flags, int cons)
285 {
286     /*
287      * Access the video adapter driver through the back door!
288      * Video adapter drivers need to be configured before syscons.
289      * However, when syscons is being probed as the low-level console,
290      * they have not been initialized yet.  We force them to initialize
291      * themselves here. XXX
292      */
293     vid_configure(cons ? VIO_PROBE_ONLY : 0);
294 
295     return (vid_find_adapter("*", unit) >= 0);
296 }
297 
298 /* probe the keyboard, return TRUE if found */
299 static int
300 sckbdprobe(int unit, int flags, int cons)
301 {
302     /* access the keyboard driver through the backdoor! */
303     kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
304 
305     return (kbd_find_keyboard("*", unit) >= 0);
306 }
307 
308 static char
309 *adapter_name(video_adapter_t *adp)
310 {
311     static struct {
312 	int type;
313 	char *name[2];
314     } names[] = {
315 	{ KD_MONO,	{ "MDA",	"MDA" } },
316 	{ KD_HERCULES,	{ "Hercules",	"Hercules" } },
317 	{ KD_CGA,	{ "CGA",	"CGA" } },
318 	{ KD_EGA,	{ "EGA",	"EGA (mono)" } },
319 	{ KD_VGA,	{ "VGA",	"VGA (mono)" } },
320 	{ KD_PC98,	{ "PC-98x1",	"PC-98x1" } },
321 	{ KD_TGA,	{ "TGA",	"TGA" } },
322 	{ -1,		{ "Unknown",	"Unknown" } },
323     };
324     int i;
325 
326     for (i = 0; names[i].type != -1; ++i)
327 	if (names[i].type == adp->va_type)
328 	    break;
329     return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
330 }
331 
332 static void
333 sctty_outwakeup(struct tty *tp)
334 {
335     size_t len;
336     u_char buf[PCBURST];
337     scr_stat *scp = sc_get_stat(tp);
338 
339     if (scp->status & SLKED ||
340 	(scp == scp->sc->cur_scp && scp->sc->blink_in_progress))
341 	return;
342 
343     for (;;) {
344 	len = ttydisc_getc(tp, buf, sizeof buf);
345 	if (len == 0)
346 	    break;
347 	sc_puts(scp, buf, len, 0);
348     }
349 }
350 
351 static struct tty *
352 sc_alloc_tty(int index, int devnum)
353 {
354 	struct sc_ttysoftc *stc;
355 	struct tty *tp;
356 
357 	/* Allocate TTY object and softc to store unit number. */
358 	stc = malloc(sizeof(struct sc_ttysoftc), M_DEVBUF, M_WAITOK);
359 	stc->st_index = index;
360 	stc->st_stat = NULL;
361 	tp = tty_alloc_mutex(&sc_ttydevsw, stc, &Giant);
362 
363 	/* Create device node. */
364 	tty_makedev(tp, NULL, "v%r", devnum);
365 
366 	return (tp);
367 }
368 
369 #ifdef SC_PIXEL_MODE
370 static void
371 sc_set_vesa_mode(scr_stat *scp, sc_softc_t *sc, int unit)
372 {
373 	video_info_t info;
374 	u_char *font;
375 	int depth;
376 	int fontsize;
377 	int i;
378 	int vmode;
379 
380 	vmode = 0;
381 	(void)resource_int_value("sc", unit, "vesa_mode", &vmode);
382 	if (vmode < M_VESA_BASE || vmode > M_VESA_MODE_MAX ||
383 	    vidd_get_info(sc->adp, vmode, &info) != 0 ||
384 	    !sc_support_pixel_mode(&info))
385 		vmode = 0;
386 
387 	/*
388 	 * If the mode is unset or unsupported, search for an available
389 	 * 800x600 graphics mode with the highest color depth.
390 	 */
391 	if (vmode == 0) {
392 		for (depth = 0, i = M_VESA_BASE; i <= M_VESA_MODE_MAX; i++)
393 			if (vidd_get_info(sc->adp, i, &info) == 0 &&
394 			    info.vi_width == 800 && info.vi_height == 600 &&
395 			    sc_support_pixel_mode(&info) &&
396 			    info.vi_depth > depth) {
397 				vmode = i;
398 				depth = info.vi_depth;
399 			}
400 		if (vmode == 0)
401 			return;
402 		vidd_get_info(sc->adp, vmode, &info);
403 	}
404 
405 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
406 	fontsize = info.vi_cheight;
407 #else
408 	fontsize = scp->font_size;
409 #endif
410 	if (fontsize < 14)
411 		fontsize = 8;
412 	else if (fontsize >= 16)
413 		fontsize = 16;
414 	else
415 		fontsize = 14;
416 #ifndef SC_NO_FONT_LOADING
417 	switch (fontsize) {
418 	case 8:
419 		if ((sc->fonts_loaded & FONT_8) == 0)
420 			return;
421 		font = sc->font_8;
422 		break;
423 	case 14:
424 		if ((sc->fonts_loaded & FONT_14) == 0)
425 			return;
426 		font = sc->font_14;
427 		break;
428 	case 16:
429 		if ((sc->fonts_loaded & FONT_16) == 0)
430 			return;
431 		font = sc->font_16;
432 		break;
433 	}
434 #else
435 	font = NULL;
436 #endif
437 #ifdef DEV_SPLASH
438 	if ((sc->flags & SC_SPLASH_SCRN) != 0)
439 		splash_term(sc->adp);
440 #endif
441 #ifndef SC_NO_HISTORY
442 	if (scp->history != NULL) {
443 		sc_vtb_append(&scp->vtb, 0, scp->history,
444 		    scp->ypos * scp->xsize + scp->xpos);
445 		scp->history_pos = sc_vtb_tail(scp->history);
446 	}
447 #endif
448 	vidd_set_mode(sc->adp, vmode);
449 	scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
450 	scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
451 	scp->xpixel = info.vi_width;
452 	scp->ypixel = info.vi_height;
453 	scp->xsize = scp->xpixel / 8;
454 	scp->ysize = scp->ypixel / fontsize;
455 	scp->xpos = 0;
456 	scp->ypos = scp->ysize - 1;
457 	scp->xoff = scp->yoff = 0;
458 	scp->font = font;
459 	scp->font_size = fontsize;
460 	scp->font_width = 8;
461 	scp->start = scp->xsize * scp->ysize - 1;
462 	scp->end = 0;
463 	scp->cursor_pos = scp->cursor_oldpos = scp->xsize * scp->xsize;
464 	scp->mode = sc->initial_mode = vmode;
465 #ifndef __sparc64__
466 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
467 	    (void *)sc->adp->va_window, FALSE);
468 #endif
469 	sc_alloc_scr_buffer(scp, FALSE, FALSE);
470 	sc_init_emulator(scp, NULL);
471 #ifndef SC_NO_CUTPASTE
472 	sc_alloc_cut_buffer(scp, FALSE);
473 #endif
474 #ifndef SC_NO_HISTORY
475 	sc_alloc_history_buffer(scp, 0, 0, FALSE);
476 #endif
477 	sc_set_border(scp, scp->border);
478 	sc_set_cursor_image(scp);
479 	scp->status &= ~UNKNOWN_MODE;
480 #ifdef DEV_SPLASH
481 	if ((sc->flags & SC_SPLASH_SCRN) != 0)
482 		splash_init(sc->adp, scsplash_callback, sc);
483 #endif
484 }
485 #endif
486 
487 int
488 sc_attach_unit(int unit, int flags)
489 {
490     sc_softc_t *sc;
491     scr_stat *scp;
492     struct cdev *dev;
493     int vc;
494 
495     flags &= ~SC_KERNEL_CONSOLE;
496 
497     if (sc_console_unit == unit) {
498 	/*
499 	 * If this unit is being used as the system console, we need to
500 	 * adjust some variables and buffers before and after scinit().
501 	 */
502 	/* assert(sc_console != NULL) */
503 	flags |= SC_KERNEL_CONSOLE;
504 	scmeminit(NULL);
505     }
506     scinit(unit, flags);
507 
508     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
509     sc->config = flags;
510     callout_init(&sc->ctimeout, 0);
511     callout_init(&sc->cblink, 0);
512     scp = sc_get_stat(sc->dev[0]);
513     if (sc_console == NULL)	/* sc_console_unit < 0 */
514 	sc_console = scp;
515 
516 #ifdef SC_PIXEL_MODE
517     if ((sc->config & SC_VESAMODE) != 0)
518 	sc_set_vesa_mode(scp, sc, unit);
519 #endif /* SC_PIXEL_MODE */
520 
521     /* initialize cursor */
522     if (!ISGRAPHSC(scp))
523     	update_cursor_image(scp);
524 
525     /* get screen update going */
526     scrn_timer(sc);
527 
528     /* set up the keyboard */
529     (void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
530     update_kbd_state(scp, scp->status, LOCK_MASK);
531 
532     printf("%s%d: %s <%d virtual consoles, flags=0x%x>\n",
533 	   SC_DRIVER_NAME, unit, adapter_name(sc->adp), sc->vtys, sc->config);
534     if (bootverbose) {
535 	printf("%s%d:", SC_DRIVER_NAME, unit);
536     	if (sc->adapter >= 0)
537 	    printf(" fb%d", sc->adapter);
538 	if (sc->keyboard >= 0)
539 	    printf(", kbd%d", sc->keyboard);
540 	if (scp->tsw)
541 	    printf(", terminal emulator: %s (%s)",
542 		   scp->tsw->te_name, scp->tsw->te_desc);
543 	printf("\n");
544     }
545 
546     /* Register suspend/resume/shutdown callbacks for the kernel console. */
547     if (sc_console_unit == unit) {
548 	EVENTHANDLER_REGISTER(power_suspend, scsuspend, NULL,
549 			      EVENTHANDLER_PRI_ANY);
550 	EVENTHANDLER_REGISTER(power_resume, scresume, NULL,
551 			      EVENTHANDLER_PRI_ANY);
552 	EVENTHANDLER_REGISTER(shutdown_pre_sync, scshutdown, NULL,
553 			      SHUTDOWN_PRI_DEFAULT);
554     }
555 
556     for (vc = 0; vc < sc->vtys; vc++) {
557 	if (sc->dev[vc] == NULL) {
558 		sc->dev[vc] = sc_alloc_tty(vc, vc + unit * MAXCONS);
559 		if (vc == 0 && sc->dev == main_devs)
560 			SC_STAT(sc->dev[0]) = &main_console;
561 	}
562 	/*
563 	 * The first vty already has struct tty and scr_stat initialized
564 	 * in scinit().  The other vtys will have these structs when
565 	 * first opened.
566 	 */
567     }
568 
569     dev = make_dev(&consolectl_devsw, 0, UID_ROOT, GID_WHEEL, 0600,
570         "consolectl");
571     dev->si_drv1 = sc->dev[0];
572 
573     return 0;
574 }
575 
576 static void
577 scmeminit(void *arg)
578 {
579     if (sc_malloc)
580 	return;
581     sc_malloc = TRUE;
582 
583     /*
584      * As soon as malloc() becomes functional, we had better allocate
585      * various buffers for the kernel console.
586      */
587 
588     if (sc_console_unit < 0)	/* sc_console == NULL */
589 	return;
590 
591     /* copy the temporary buffer to the final buffer */
592     sc_alloc_scr_buffer(sc_console, FALSE, FALSE);
593 
594 #ifndef SC_NO_CUTPASTE
595     sc_alloc_cut_buffer(sc_console, FALSE);
596 #endif
597 
598 #ifndef SC_NO_HISTORY
599     /* initialize history buffer & pointers */
600     sc_alloc_history_buffer(sc_console, 0, 0, FALSE);
601 #endif
602 }
603 
604 /* XXX */
605 SYSINIT(sc_mem, SI_SUB_KMEM, SI_ORDER_ANY, scmeminit, NULL);
606 
607 static int
608 scdevtounit(struct tty *tp)
609 {
610     int vty = SC_VTY(tp);
611 
612     if (vty == SC_CONSOLECTL)
613 	return ((sc_console != NULL) ? sc_console->sc->unit : -1);
614     else if ((vty < 0) || (vty >= MAXCONS*sc_max_unit()))
615 	return -1;
616     else
617 	return vty/MAXCONS;
618 }
619 
620 static int
621 sctty_open(struct tty *tp)
622 {
623     int unit = scdevtounit(tp);
624     sc_softc_t *sc;
625     scr_stat *scp;
626 #ifndef __sparc64__
627     keyarg_t key;
628 #endif
629 
630     DPRINTF(5, ("scopen: dev:%s, unit:%d, vty:%d\n",
631 		devtoname(tp->t_dev), unit, SC_VTY(tp)));
632 
633     sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
634     if (sc == NULL)
635 	return ENXIO;
636 
637     if (!tty_opened(tp)) {
638         /* Use the current setting of the <-- key as default VERASE. */
639         /* If the Delete key is preferable, an stty is necessary     */
640 #ifndef __sparc64__
641 	if (sc->kbd != NULL) {
642 	    key.keynum = KEYCODE_BS;
643 	    (void)kbdd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
644             tp->t_termios.c_cc[VERASE] = key.key.map[0];
645 	}
646 #endif
647     }
648 
649     scp = sc_get_stat(tp);
650     if (scp == NULL) {
651 	scp = SC_STAT(tp) = alloc_scp(sc, SC_VTY(tp));
652 	if (ISGRAPHSC(scp))
653 	    sc_set_pixel_mode(scp, NULL, 0, 0, 16, 8);
654     }
655     if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
656 	tp->t_winsize.ws_col = scp->xsize;
657 	tp->t_winsize.ws_row = scp->ysize;
658     }
659 
660     return (0);
661 }
662 
663 static void
664 sctty_close(struct tty *tp)
665 {
666     scr_stat *scp;
667     int s;
668 
669     if (SC_VTY(tp) != SC_CONSOLECTL) {
670 	scp = sc_get_stat(tp);
671 	/* were we in the middle of the VT switching process? */
672 	DPRINTF(5, ("sc%d: scclose(), ", scp->sc->unit));
673 	s = spltty();
674 	if ((scp == scp->sc->cur_scp) && (scp->sc->unit == sc_console_unit))
675 	    cnavailable(sc_consptr, TRUE);
676 	if (finish_vt_rel(scp, TRUE, &s) == 0)	/* force release */
677 	    DPRINTF(5, ("reset WAIT_REL, "));
678 	if (finish_vt_acq(scp) == 0)		/* force acknowledge */
679 	    DPRINTF(5, ("reset WAIT_ACQ, "));
680 #ifdef not_yet_done
681 	if (scp == &main_console) {
682 	    scp->pid = 0;
683 	    scp->proc = NULL;
684 	    scp->smode.mode = VT_AUTO;
685 	}
686 	else {
687 	    sc_vtb_destroy(&scp->vtb);
688 #ifndef __sparc64__
689 	    sc_vtb_destroy(&scp->scr);
690 #endif
691 	    sc_free_history_buffer(scp, scp->ysize);
692 	    SC_STAT(tp) = NULL;
693 	    free(scp, M_DEVBUF);
694 	}
695 #else
696 	scp->pid = 0;
697 	scp->proc = NULL;
698 	scp->smode.mode = VT_AUTO;
699 #endif
700 	scp->kbd_mode = K_XLATE;
701 	if (scp == scp->sc->cur_scp)
702 	    (void)kbdd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
703 	DPRINTF(5, ("done.\n"));
704     }
705 }
706 
707 #if 0 /* XXX mpsafetty: fix screensaver. What about outwakeup? */
708 static int
709 scread(struct cdev *dev, struct uio *uio, int flag)
710 {
711     if (!sc_saver_keyb_only)
712 	sc_touch_scrn_saver();
713     return ttyread(dev, uio, flag);
714 }
715 #endif
716 
717 static int
718 sckbdevent(keyboard_t *thiskbd, int event, void *arg)
719 {
720     sc_softc_t *sc;
721     struct tty *cur_tty;
722     int c, error = 0;
723     size_t len;
724     const u_char *cp;
725 
726     sc = (sc_softc_t *)arg;
727     /* assert(thiskbd == sc->kbd) */
728 
729     mtx_lock(&Giant);
730 
731     switch (event) {
732     case KBDIO_KEYINPUT:
733 	break;
734     case KBDIO_UNLOADING:
735 	sc->kbd = NULL;
736 	sc->keyboard = -1;
737 	kbd_release(thiskbd, (void *)&sc->keyboard);
738 	goto done;
739     default:
740 	error = EINVAL;
741 	goto done;
742     }
743 
744     /*
745      * Loop while there is still input to get from the keyboard.
746      * I don't think this is nessesary, and it doesn't fix
747      * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
748      */
749     while ((c = scgetc(sc, SCGETC_NONBLOCK)) != NOKEY) {
750 
751 	cur_tty = SC_DEV(sc, sc->cur_scp->index);
752 	if (!tty_opened_ns(cur_tty))
753 	    continue;
754 
755 	if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
756 	    continue;
757 
758 	switch (KEYFLAGS(c)) {
759 	case 0x0000: /* normal key */
760 	    ttydisc_rint(cur_tty, KEYCHAR(c), 0);
761 	    break;
762 	case FKEY:  /* function key, return string */
763 	    cp = (*sc->cur_scp->tsw->te_fkeystr)(sc->cur_scp, c);
764 	    if (cp != NULL) {
765 	    	ttydisc_rint_simple(cur_tty, cp, strlen(cp));
766 		break;
767 	    }
768 	    cp = kbdd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
769 	    if (cp != NULL)
770 	    	ttydisc_rint_simple(cur_tty, cp, len);
771 	    break;
772 	case MKEY:  /* meta is active, prepend ESC */
773 	    ttydisc_rint(cur_tty, 0x1b, 0);
774 	    ttydisc_rint(cur_tty, KEYCHAR(c), 0);
775 	    break;
776 	case BKEY:  /* backtab fixed sequence (esc [ Z) */
777 	    ttydisc_rint_simple(cur_tty, "\x1B[Z", 3);
778 	    break;
779 	}
780 
781 	ttydisc_rint_done(cur_tty);
782     }
783 
784     sc->cur_scp->status |= MOUSE_HIDDEN;
785 
786 done:
787     mtx_unlock(&Giant);
788     return (error);
789 }
790 
791 static int
792 sctty_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
793 {
794     int error;
795     int i;
796     sc_softc_t *sc;
797     scr_stat *scp;
798     int s;
799 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
800     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
801     int ival;
802 #endif
803 
804     /* If there is a user_ioctl function call that first */
805     if (sc_user_ioctl) {
806 	error = (*sc_user_ioctl)(tp, cmd, data, td);
807 	if (error != ENOIOCTL)
808 	    return error;
809     }
810 
811     error = sc_vid_ioctl(tp, cmd, data, td);
812     if (error != ENOIOCTL)
813 	return error;
814 
815 #ifndef SC_NO_HISTORY
816     error = sc_hist_ioctl(tp, cmd, data, td);
817     if (error != ENOIOCTL)
818 	return error;
819 #endif
820 
821 #ifndef SC_NO_SYSMOUSE
822     error = sc_mouse_ioctl(tp, cmd, data, td);
823     if (error != ENOIOCTL)
824 	return error;
825 #endif
826 
827     scp = sc_get_stat(tp);
828     /* assert(scp != NULL) */
829     /* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
830     sc = scp->sc;
831 
832     if (scp->tsw) {
833 	error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, td);
834 	if (error != ENOIOCTL)
835 	    return error;
836     }
837 
838     switch (cmd) {  		/* process console hardware related ioctl's */
839 
840     case GIO_ATTR:      	/* get current attributes */
841 	/* this ioctl is not processed here, but in the terminal emulator */
842 	return ENOTTY;
843 
844     case GIO_COLOR:     	/* is this a color console ? */
845 	*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
846 	return 0;
847 
848     case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
849 	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
850             return EINVAL;
851 	s = spltty();
852 	scrn_blank_time = *(int *)data;
853 	run_scrn_saver = (scrn_blank_time != 0);
854 	splx(s);
855 	return 0;
856 
857     case CONS_CURSORTYPE:   	/* set cursor type (obsolete) */
858 	s = spltty();
859 	*(int *)data &= CONS_CURSOR_ATTRS;
860 	sc_change_cursor_shape(scp, *(int *)data, -1, -1);
861 	splx(s);
862 	return 0;
863 
864     case CONS_GETCURSORSHAPE:   /* get cursor shape (new interface) */
865 	if (((int *)data)[0] & CONS_LOCAL_CURSOR) {
866 	    ((int *)data)[0] = scp->curr_curs_attr.flags;
867 	    ((int *)data)[1] = scp->curr_curs_attr.base;
868 	    ((int *)data)[2] = scp->curr_curs_attr.height;
869 	} else {
870 	    ((int *)data)[0] = sc->curs_attr.flags;
871 	    ((int *)data)[1] = sc->curs_attr.base;
872 	    ((int *)data)[2] = sc->curs_attr.height;
873 	}
874 	return 0;
875 
876     case CONS_SETCURSORSHAPE:   /* set cursor shape (new interface) */
877 	s = spltty();
878 	sc_change_cursor_shape(scp, ((int *)data)[0],
879 	    ((int *)data)[1], ((int *)data)[2]);
880 	splx(s);
881 	return 0;
882 
883     case CONS_BELLTYPE: 	/* set bell type sound/visual */
884 	if ((*(int *)data) & CONS_VISUAL_BELL)
885 	    sc->flags |= SC_VISUAL_BELL;
886 	else
887 	    sc->flags &= ~SC_VISUAL_BELL;
888 	if ((*(int *)data) & CONS_QUIET_BELL)
889 	    sc->flags |= SC_QUIET_BELL;
890 	else
891 	    sc->flags &= ~SC_QUIET_BELL;
892 	return 0;
893 
894     case CONS_GETINFO:  	/* get current (virtual) console info */
895     {
896 	vid_info_t *ptr = (vid_info_t*)data;
897 	if (ptr->size == sizeof(struct vid_info)) {
898 	    ptr->m_num = sc->cur_scp->index;
899 	    ptr->font_size = scp->font_size;
900 	    ptr->mv_col = scp->xpos;
901 	    ptr->mv_row = scp->ypos;
902 	    ptr->mv_csz = scp->xsize;
903 	    ptr->mv_rsz = scp->ysize;
904 	    ptr->mv_hsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
905 	    /*
906 	     * The following fields are filled by the terminal emulator. XXX
907 	     *
908 	     * ptr->mv_norm.fore
909 	     * ptr->mv_norm.back
910 	     * ptr->mv_rev.fore
911 	     * ptr->mv_rev.back
912 	     */
913 	    ptr->mv_grfc.fore = 0;      /* not supported */
914 	    ptr->mv_grfc.back = 0;      /* not supported */
915 	    ptr->mv_ovscan = scp->border;
916 	    if (scp == sc->cur_scp)
917 		save_kbd_state(scp);
918 	    ptr->mk_keylock = scp->status & LOCK_MASK;
919 	    return 0;
920 	}
921 	return EINVAL;
922     }
923 
924     case CONS_GETVERS:  	/* get version number */
925 	*(int*)data = 0x200;    /* version 2.0 */
926 	return 0;
927 
928     case CONS_IDLE:		/* see if the screen has been idle */
929 	/*
930 	 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
931 	 * the user process may have been writing something on the
932 	 * screen and syscons is not aware of it. Declare the screen
933 	 * is NOT idle if it is in one of these modes. But there is
934 	 * an exception to it; if a screen saver is running in the
935 	 * graphics mode in the current screen, we should say that the
936 	 * screen has been idle.
937 	 */
938 	*(int *)data = (sc->flags & SC_SCRN_IDLE)
939 		       && (!ISGRAPHSC(sc->cur_scp)
940 			   || (sc->cur_scp->status & SAVER_RUNNING));
941 	return 0;
942 
943     case CONS_SAVERMODE:	/* set saver mode */
944 	switch(*(int *)data) {
945 	case CONS_NO_SAVER:
946 	case CONS_USR_SAVER:
947 	    /* if a LKM screen saver is running, stop it first. */
948 	    scsplash_stick(FALSE);
949 	    saver_mode = *(int *)data;
950 	    s = spltty();
951 #ifdef DEV_SPLASH
952 	    if ((error = wait_scrn_saver_stop(NULL))) {
953 		splx(s);
954 		return error;
955 	    }
956 #endif
957 	    run_scrn_saver = TRUE;
958 	    if (saver_mode == CONS_USR_SAVER)
959 		scp->status |= SAVER_RUNNING;
960 	    else
961 		scp->status &= ~SAVER_RUNNING;
962 	    scsplash_stick(TRUE);
963 	    splx(s);
964 	    break;
965 	case CONS_LKM_SAVER:
966 	    s = spltty();
967 	    if ((saver_mode == CONS_USR_SAVER) && (scp->status & SAVER_RUNNING))
968 		scp->status &= ~SAVER_RUNNING;
969 	    saver_mode = *(int *)data;
970 	    splx(s);
971 	    break;
972 	default:
973 	    return EINVAL;
974 	}
975 	return 0;
976 
977     case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
978 	/*
979 	 * Note that this ioctl does not guarantee the screen saver
980 	 * actually starts or stops. It merely attempts to do so...
981 	 */
982 	s = spltty();
983 	run_scrn_saver = (*(int *)data != 0);
984 	if (run_scrn_saver)
985 	    sc->scrn_time_stamp -= scrn_blank_time;
986 	splx(s);
987 	return 0;
988 
989     case CONS_SCRSHOT:		/* get a screen shot */
990     {
991 	int retval, hist_rsz;
992 	size_t lsize, csize;
993 	vm_offset_t frbp, hstp;
994 	unsigned lnum;
995 	scrshot_t *ptr = (scrshot_t *)data;
996 	void *outp = ptr->buf;
997 
998 	if (ptr->x < 0 || ptr->y < 0 || ptr->xsize < 0 || ptr->ysize < 0)
999 		return EINVAL;
1000 	s = spltty();
1001 	if (ISGRAPHSC(scp)) {
1002 	    splx(s);
1003 	    return EOPNOTSUPP;
1004 	}
1005 	hist_rsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
1006 	if (((u_int)ptr->x + ptr->xsize) > scp->xsize ||
1007 	    ((u_int)ptr->y + ptr->ysize) > (scp->ysize + hist_rsz)) {
1008 	    splx(s);
1009 	    return EINVAL;
1010 	}
1011 
1012 	lsize = scp->xsize * sizeof(u_int16_t);
1013 	csize = ptr->xsize * sizeof(u_int16_t);
1014 	/* Pointer to the last line of framebuffer */
1015 	frbp = scp->vtb.vtb_buffer + scp->ysize * lsize + ptr->x *
1016 	       sizeof(u_int16_t);
1017 	/* Pointer to the last line of target buffer */
1018 	outp = (char *)outp + ptr->ysize * csize;
1019 	/* Pointer to the last line of history buffer */
1020 	if (scp->history != NULL)
1021 	    hstp = scp->history->vtb_buffer + sc_vtb_tail(scp->history) *
1022 		sizeof(u_int16_t) + ptr->x * sizeof(u_int16_t);
1023 	else
1024 	    hstp = 0;
1025 
1026 	retval = 0;
1027 	for (lnum = 0; lnum < (ptr->y + ptr->ysize); lnum++) {
1028 	    if (lnum < scp->ysize) {
1029 		frbp -= lsize;
1030 	    } else {
1031 		hstp -= lsize;
1032 		if (hstp < scp->history->vtb_buffer)
1033 		    hstp += scp->history->vtb_rows * lsize;
1034 		frbp = hstp;
1035 	    }
1036 	    if (lnum < ptr->y)
1037 		continue;
1038 	    outp = (char *)outp - csize;
1039 	    retval = copyout((void *)frbp, outp, csize);
1040 	    if (retval != 0)
1041 		break;
1042 	}
1043 	splx(s);
1044 	return retval;
1045     }
1046 
1047     case VT_SETMODE:    	/* set screen switcher mode */
1048     {
1049 	struct vt_mode *mode;
1050 	struct proc *p1;
1051 
1052 	mode = (struct vt_mode *)data;
1053 	DPRINTF(5, ("%s%d: VT_SETMODE ", SC_DRIVER_NAME, sc->unit));
1054 	if (scp->smode.mode == VT_PROCESS) {
1055 	    p1 = pfind(scp->pid);
1056     	    if (scp->proc == p1 && scp->proc != td->td_proc) {
1057 		if (p1)
1058 		    PROC_UNLOCK(p1);
1059 		DPRINTF(5, ("error EPERM\n"));
1060 		return EPERM;
1061 	    }
1062 	    if (p1)
1063 		PROC_UNLOCK(p1);
1064 	}
1065 	s = spltty();
1066 	if (mode->mode == VT_AUTO) {
1067 	    scp->smode.mode = VT_AUTO;
1068 	    scp->proc = NULL;
1069 	    scp->pid = 0;
1070 	    DPRINTF(5, ("VT_AUTO, "));
1071 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
1072 		cnavailable(sc_consptr, TRUE);
1073 	    /* were we in the middle of the vty switching process? */
1074 	    if (finish_vt_rel(scp, TRUE, &s) == 0)
1075 		DPRINTF(5, ("reset WAIT_REL, "));
1076 	    if (finish_vt_acq(scp) == 0)
1077 		DPRINTF(5, ("reset WAIT_ACQ, "));
1078 	} else {
1079 	    if (!ISSIGVALID(mode->relsig) || !ISSIGVALID(mode->acqsig)
1080 		|| !ISSIGVALID(mode->frsig)) {
1081 		splx(s);
1082 		DPRINTF(5, ("error EINVAL\n"));
1083 		return EINVAL;
1084 	    }
1085 	    DPRINTF(5, ("VT_PROCESS %d, ", td->td_proc->p_pid));
1086 	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
1087 	    scp->proc = td->td_proc;
1088 	    scp->pid = scp->proc->p_pid;
1089 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
1090 		cnavailable(sc_consptr, FALSE);
1091 	}
1092 	splx(s);
1093 	DPRINTF(5, ("\n"));
1094 	return 0;
1095     }
1096 
1097     case VT_GETMODE:    	/* get screen switcher mode */
1098 	bcopy(&scp->smode, data, sizeof(struct vt_mode));
1099 	return 0;
1100 
1101 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1102     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1103     case _IO('v', 4):
1104 	ival = IOCPARM_IVAL(data);
1105 	data = (caddr_t)&ival;
1106 	/* FALLTHROUGH */
1107 #endif
1108     case VT_RELDISP:    	/* screen switcher ioctl */
1109 	s = spltty();
1110 	/*
1111 	 * This must be the current vty which is in the VT_PROCESS
1112 	 * switching mode...
1113 	 */
1114 	if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
1115 	    splx(s);
1116 	    return EINVAL;
1117 	}
1118 	/* ...and this process is controlling it. */
1119 	if (scp->proc != td->td_proc) {
1120 	    splx(s);
1121 	    return EPERM;
1122 	}
1123 	error = EINVAL;
1124 	switch(*(int *)data) {
1125 	case VT_FALSE:  	/* user refuses to release screen, abort */
1126 	    if ((error = finish_vt_rel(scp, FALSE, &s)) == 0)
1127 		DPRINTF(5, ("%s%d: VT_FALSE\n", SC_DRIVER_NAME, sc->unit));
1128 	    break;
1129 	case VT_TRUE:   	/* user has released screen, go on */
1130 	    if ((error = finish_vt_rel(scp, TRUE, &s)) == 0)
1131 		DPRINTF(5, ("%s%d: VT_TRUE\n", SC_DRIVER_NAME, sc->unit));
1132 	    break;
1133 	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
1134 	    if ((error = finish_vt_acq(scp)) == 0)
1135 		DPRINTF(5, ("%s%d: VT_ACKACQ\n", SC_DRIVER_NAME, sc->unit));
1136 	    break;
1137 	default:
1138 	    break;
1139 	}
1140 	splx(s);
1141 	return error;
1142 
1143     case VT_OPENQRY:    	/* return free virtual console */
1144 	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
1145 	    tp = SC_DEV(sc, i);
1146 	    if (!tty_opened_ns(tp)) {
1147 		*(int *)data = i + 1;
1148 		return 0;
1149 	    }
1150 	}
1151 	return EINVAL;
1152 
1153 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1154     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1155     case _IO('v', 5):
1156 	ival = IOCPARM_IVAL(data);
1157 	data = (caddr_t)&ival;
1158 	/* FALLTHROUGH */
1159 #endif
1160     case VT_ACTIVATE:   	/* switch to screen *data */
1161 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1162 	s = spltty();
1163 	error = sc_clean_up(sc->cur_scp);
1164 	splx(s);
1165 	if (error)
1166 	    return error;
1167 	error = sc_switch_scr(sc, i);
1168 	return (error);
1169 
1170 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1171     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1172     case _IO('v', 6):
1173 	ival = IOCPARM_IVAL(data);
1174 	data = (caddr_t)&ival;
1175 	/* FALLTHROUGH */
1176 #endif
1177     case VT_WAITACTIVE: 	/* wait for switch to occur */
1178 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1179 	if ((i < sc->first_vty) || (i >= sc->first_vty + sc->vtys))
1180 	    return EINVAL;
1181 	if (i == sc->cur_scp->index)
1182 	    return 0;
1183 	error = tsleep(VTY_WCHAN(sc, i), (PZERO + 1) | PCATCH, "waitvt", 0);
1184 	return error;
1185 
1186     case VT_GETACTIVE:		/* get active vty # */
1187 	*(int *)data = sc->cur_scp->index + 1;
1188 	return 0;
1189 
1190     case VT_GETINDEX:		/* get this vty # */
1191 	*(int *)data = scp->index + 1;
1192 	return 0;
1193 
1194     case VT_LOCKSWITCH:		/* prevent vty switching */
1195 	if ((*(int *)data) & 0x01)
1196 	    sc->flags |= SC_SCRN_VTYLOCK;
1197 	else
1198 	    sc->flags &= ~SC_SCRN_VTYLOCK;
1199 	return 0;
1200 
1201     case KDENABIO:      	/* allow io operations */
1202 	error = priv_check(td, PRIV_IO);
1203 	if (error != 0)
1204 	    return error;
1205 	error = securelevel_gt(td->td_ucred, 0);
1206 	if (error != 0)
1207 		return error;
1208 #ifdef __i386__
1209 	td->td_frame->tf_eflags |= PSL_IOPL;
1210 #elif defined(__amd64__)
1211 	td->td_frame->tf_rflags |= PSL_IOPL;
1212 #endif
1213 	return 0;
1214 
1215     case KDDISABIO:     	/* disallow io operations (default) */
1216 #ifdef __i386__
1217 	td->td_frame->tf_eflags &= ~PSL_IOPL;
1218 #elif defined(__amd64__)
1219 	td->td_frame->tf_rflags &= ~PSL_IOPL;
1220 #endif
1221 	return 0;
1222 
1223 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1224     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1225     case _IO('K', 20):
1226 	ival = IOCPARM_IVAL(data);
1227 	data = (caddr_t)&ival;
1228 	/* FALLTHROUGH */
1229 #endif
1230     case KDSKBSTATE:    	/* set keyboard state (locks) */
1231 	if (*(int *)data & ~LOCK_MASK)
1232 	    return EINVAL;
1233 	scp->status &= ~LOCK_MASK;
1234 	scp->status |= *(int *)data;
1235 	if (scp == sc->cur_scp)
1236 	    update_kbd_state(scp, scp->status, LOCK_MASK);
1237 	return 0;
1238 
1239     case KDGKBSTATE:    	/* get keyboard state (locks) */
1240 	if (scp == sc->cur_scp)
1241 	    save_kbd_state(scp);
1242 	*(int *)data = scp->status & LOCK_MASK;
1243 	return 0;
1244 
1245     case KDGETREPEAT:      	/* get keyboard repeat & delay rates */
1246     case KDSETREPEAT:      	/* set keyboard repeat & delay rates (new) */
1247 	error = kbdd_ioctl(sc->kbd, cmd, data);
1248 	if (error == ENOIOCTL)
1249 	    error = ENODEV;
1250 	return error;
1251 
1252 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1253     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1254     case _IO('K', 67):
1255 	ival = IOCPARM_IVAL(data);
1256 	data = (caddr_t)&ival;
1257 	/* FALLTHROUGH */
1258 #endif
1259     case KDSETRAD:      	/* set keyboard repeat & delay rates (old) */
1260 	if (*(int *)data & ~0x7f)
1261 	    return EINVAL;
1262 	error = kbdd_ioctl(sc->kbd, KDSETRAD, data);
1263 	if (error == ENOIOCTL)
1264 	    error = ENODEV;
1265 	return error;
1266 
1267 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1268     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1269     case _IO('K', 7):
1270 	ival = IOCPARM_IVAL(data);
1271 	data = (caddr_t)&ival;
1272 	/* FALLTHROUGH */
1273 #endif
1274     case KDSKBMODE:     	/* set keyboard mode */
1275 	switch (*(int *)data) {
1276 	case K_XLATE:   	/* switch to XLT ascii mode */
1277 	case K_RAW: 		/* switch to RAW scancode mode */
1278 	case K_CODE: 		/* switch to CODE mode */
1279 	    scp->kbd_mode = *(int *)data;
1280 	    if (scp == sc->cur_scp)
1281 		(void)kbdd_ioctl(sc->kbd, KDSKBMODE, data);
1282 	    return 0;
1283 	default:
1284 	    return EINVAL;
1285 	}
1286 	/* NOT REACHED */
1287 
1288     case KDGKBMODE:     	/* get keyboard mode */
1289 	*(int *)data = scp->kbd_mode;
1290 	return 0;
1291 
1292     case KDGKBINFO:
1293 	error = kbdd_ioctl(sc->kbd, cmd, data);
1294 	if (error == ENOIOCTL)
1295 	    error = ENODEV;
1296 	return error;
1297 
1298 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1299     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1300     case _IO('K', 8):
1301 	ival = IOCPARM_IVAL(data);
1302 	data = (caddr_t)&ival;
1303 	/* FALLTHROUGH */
1304 #endif
1305     case KDMKTONE:      	/* sound the bell */
1306 	if (*(int*)data)
1307 	    sc_bell(scp, (*(int*)data)&0xffff,
1308 		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1309 	else
1310 	    sc_bell(scp, scp->bell_pitch, scp->bell_duration);
1311 	return 0;
1312 
1313 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1314     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1315     case _IO('K', 63):
1316 	ival = IOCPARM_IVAL(data);
1317 	data = (caddr_t)&ival;
1318 	/* FALLTHROUGH */
1319 #endif
1320     case KIOCSOUND:     	/* make tone (*data) hz */
1321 	if (scp == sc->cur_scp) {
1322 	    if (*(int *)data)
1323 		return sc_tone(*(int *)data);
1324 	    else
1325 		return sc_tone(0);
1326 	}
1327 	return 0;
1328 
1329     case KDGKBTYPE:     	/* get keyboard type */
1330 	error = kbdd_ioctl(sc->kbd, cmd, data);
1331 	if (error == ENOIOCTL) {
1332 	    /* always return something? XXX */
1333 	    *(int *)data = 0;
1334 	}
1335 	return 0;
1336 
1337 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1338     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1339     case _IO('K', 66):
1340 	ival = IOCPARM_IVAL(data);
1341 	data = (caddr_t)&ival;
1342 	/* FALLTHROUGH */
1343 #endif
1344     case KDSETLED:      	/* set keyboard LED status */
1345 	if (*(int *)data & ~LED_MASK)	/* FIXME: LOCK_MASK? */
1346 	    return EINVAL;
1347 	scp->status &= ~LED_MASK;
1348 	scp->status |= *(int *)data;
1349 	if (scp == sc->cur_scp)
1350 	    update_kbd_leds(scp, scp->status);
1351 	return 0;
1352 
1353     case KDGETLED:      	/* get keyboard LED status */
1354 	if (scp == sc->cur_scp)
1355 	    save_kbd_state(scp);
1356 	*(int *)data = scp->status & LED_MASK;
1357 	return 0;
1358 
1359     case KBADDKBD:		/* add/remove keyboard to/from mux */
1360     case KBRELKBD:
1361 	error = kbdd_ioctl(sc->kbd, cmd, data);
1362 	if (error == ENOIOCTL)
1363 	    error = ENODEV;
1364 	return error;
1365 
1366 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1367     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1368     case _IO('c', 110):
1369 	ival = IOCPARM_IVAL(data);
1370 	data = (caddr_t)&ival;
1371 	/* FALLTHROUGH */
1372 #endif
1373     case CONS_SETKBD: 		/* set the new keyboard */
1374 	{
1375 	    keyboard_t *newkbd;
1376 
1377 	    s = spltty();
1378 	    newkbd = kbd_get_keyboard(*(int *)data);
1379 	    if (newkbd == NULL) {
1380 		splx(s);
1381 		return EINVAL;
1382 	    }
1383 	    error = 0;
1384 	    if (sc->kbd != newkbd) {
1385 		i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
1386 				 (void *)&sc->keyboard, sckbdevent, sc);
1387 		/* i == newkbd->kb_index */
1388 		if (i >= 0) {
1389 		    if (sc->kbd != NULL) {
1390 			save_kbd_state(sc->cur_scp);
1391 			kbd_release(sc->kbd, (void *)&sc->keyboard);
1392 		    }
1393 		    sc->kbd = kbd_get_keyboard(i); /* sc->kbd == newkbd */
1394 		    sc->keyboard = i;
1395 		    (void)kbdd_ioctl(sc->kbd, KDSKBMODE,
1396 			      (caddr_t)&sc->cur_scp->kbd_mode);
1397 		    update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1398 				     LOCK_MASK);
1399 		} else {
1400 		    error = EPERM;	/* XXX */
1401 		}
1402 	    }
1403 	    splx(s);
1404 	    return error;
1405 	}
1406 
1407     case CONS_RELKBD: 		/* release the current keyboard */
1408 	s = spltty();
1409 	error = 0;
1410 	if (sc->kbd != NULL) {
1411 	    save_kbd_state(sc->cur_scp);
1412 	    error = kbd_release(sc->kbd, (void *)&sc->keyboard);
1413 	    if (error == 0) {
1414 		sc->kbd = NULL;
1415 		sc->keyboard = -1;
1416 	    }
1417 	}
1418 	splx(s);
1419 	return error;
1420 
1421     case CONS_GETTERM:		/* get the current terminal emulator info */
1422 	{
1423 	    sc_term_sw_t *sw;
1424 
1425 	    if (((term_info_t *)data)->ti_index == 0) {
1426 		sw = scp->tsw;
1427 	    } else {
1428 		sw = sc_term_match_by_number(((term_info_t *)data)->ti_index);
1429 	    }
1430 	    if (sw != NULL) {
1431 		strncpy(((term_info_t *)data)->ti_name, sw->te_name,
1432 			sizeof(((term_info_t *)data)->ti_name));
1433 		strncpy(((term_info_t *)data)->ti_desc, sw->te_desc,
1434 			sizeof(((term_info_t *)data)->ti_desc));
1435 		((term_info_t *)data)->ti_flags = 0;
1436 		return 0;
1437 	    } else {
1438 		((term_info_t *)data)->ti_name[0] = '\0';
1439 		((term_info_t *)data)->ti_desc[0] = '\0';
1440 		((term_info_t *)data)->ti_flags = 0;
1441 		return EINVAL;
1442 	    }
1443 	}
1444 
1445     case CONS_SETTERM:		/* set the current terminal emulator */
1446 	s = spltty();
1447 	error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
1448 	/* FIXME: what if scp == sc_console! XXX */
1449 	splx(s);
1450 	return error;
1451 
1452     case GIO_SCRNMAP:   	/* get output translation table */
1453 	bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
1454 	return 0;
1455 
1456     case PIO_SCRNMAP:   	/* set output translation table */
1457 	bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
1458 	for (i=0; i<sizeof(sc->scr_map); i++) {
1459 	    sc->scr_rmap[sc->scr_map[i]] = i;
1460 	}
1461 	return 0;
1462 
1463     case GIO_KEYMAP:		/* get keyboard translation table */
1464     case PIO_KEYMAP:		/* set keyboard translation table */
1465     case OGIO_KEYMAP:		/* get keyboard translation table (compat) */
1466     case OPIO_KEYMAP:		/* set keyboard translation table (compat) */
1467     case GIO_DEADKEYMAP:	/* get accent key translation table */
1468     case PIO_DEADKEYMAP:	/* set accent key translation table */
1469     case GETFKEY:		/* get function key string */
1470     case SETFKEY:		/* set function key string */
1471 	error = kbdd_ioctl(sc->kbd, cmd, data);
1472 	if (error == ENOIOCTL)
1473 	    error = ENODEV;
1474 	return error;
1475 
1476 #ifndef SC_NO_FONT_LOADING
1477 
1478     case PIO_FONT8x8:   	/* set 8x8 dot font */
1479 	if (!ISFONTAVAIL(sc->adp->va_flags))
1480 	    return ENXIO;
1481 	bcopy(data, sc->font_8, 8*256);
1482 	sc->fonts_loaded |= FONT_8;
1483 	/*
1484 	 * FONT KLUDGE
1485 	 * Always use the font page #0. XXX
1486 	 * Don't load if the current font size is not 8x8.
1487 	 */
1488 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
1489 	    sc_load_font(sc->cur_scp, 0, 8, 8, sc->font_8, 0, 256);
1490 	return 0;
1491 
1492     case GIO_FONT8x8:   	/* get 8x8 dot font */
1493 	if (!ISFONTAVAIL(sc->adp->va_flags))
1494 	    return ENXIO;
1495 	if (sc->fonts_loaded & FONT_8) {
1496 	    bcopy(sc->font_8, data, 8*256);
1497 	    return 0;
1498 	}
1499 	else
1500 	    return ENXIO;
1501 
1502     case PIO_FONT8x14:  	/* set 8x14 dot font */
1503 	if (!ISFONTAVAIL(sc->adp->va_flags))
1504 	    return ENXIO;
1505 	bcopy(data, sc->font_14, 14*256);
1506 	sc->fonts_loaded |= FONT_14;
1507 	/*
1508 	 * FONT KLUDGE
1509 	 * Always use the font page #0. XXX
1510 	 * Don't load if the current font size is not 8x14.
1511 	 */
1512 	if (ISTEXTSC(sc->cur_scp)
1513 	    && (sc->cur_scp->font_size >= 14)
1514 	    && (sc->cur_scp->font_size < 16))
1515 	    sc_load_font(sc->cur_scp, 0, 14, 8, sc->font_14, 0, 256);
1516 	return 0;
1517 
1518     case GIO_FONT8x14:  	/* get 8x14 dot font */
1519 	if (!ISFONTAVAIL(sc->adp->va_flags))
1520 	    return ENXIO;
1521 	if (sc->fonts_loaded & FONT_14) {
1522 	    bcopy(sc->font_14, data, 14*256);
1523 	    return 0;
1524 	}
1525 	else
1526 	    return ENXIO;
1527 
1528     case PIO_FONT8x16:  	/* set 8x16 dot font */
1529 	if (!ISFONTAVAIL(sc->adp->va_flags))
1530 	    return ENXIO;
1531 	bcopy(data, sc->font_16, 16*256);
1532 	sc->fonts_loaded |= FONT_16;
1533 	/*
1534 	 * FONT KLUDGE
1535 	 * Always use the font page #0. XXX
1536 	 * Don't load if the current font size is not 8x16.
1537 	 */
1538 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
1539 	    sc_load_font(sc->cur_scp, 0, 16, 8, sc->font_16, 0, 256);
1540 	return 0;
1541 
1542     case GIO_FONT8x16:  	/* get 8x16 dot font */
1543 	if (!ISFONTAVAIL(sc->adp->va_flags))
1544 	    return ENXIO;
1545 	if (sc->fonts_loaded & FONT_16) {
1546 	    bcopy(sc->font_16, data, 16*256);
1547 	    return 0;
1548 	}
1549 	else
1550 	    return ENXIO;
1551 
1552 #endif /* SC_NO_FONT_LOADING */
1553 
1554     default:
1555 	break;
1556     }
1557 
1558     return (ENOIOCTL);
1559 }
1560 
1561 static int
1562 consolectl_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
1563     struct thread *td)
1564 {
1565 
1566 	return sctty_ioctl(dev->si_drv1, cmd, data, td);
1567 }
1568 
1569 static int
1570 consolectl_close(struct cdev *dev, int flags, int mode, struct thread *td)
1571 {
1572 #ifndef SC_NO_SYSMOUSE
1573 	mouse_info_t info;
1574 	memset(&info, 0, sizeof(info));
1575 	info.operation = MOUSE_ACTION;
1576 
1577 	/*
1578 	 * Make sure all buttons are released when moused and other
1579 	 * console daemons exit, so that no buttons are left pressed.
1580 	 */
1581 	(void) sctty_ioctl(dev->si_drv1, CONS_MOUSECTL, (caddr_t)&info, td);
1582 #endif
1583 	return (0);
1584 }
1585 
1586 static void
1587 sc_cnprobe(struct consdev *cp)
1588 {
1589     int unit;
1590     int flags;
1591 
1592     cp->cn_pri = sc_get_cons_priority(&unit, &flags);
1593 
1594     /* a video card is always required */
1595     if (!scvidprobe(unit, flags, TRUE))
1596 	cp->cn_pri = CN_DEAD;
1597 
1598     /* syscons will become console even when there is no keyboard */
1599     sckbdprobe(unit, flags, TRUE);
1600 
1601     if (cp->cn_pri == CN_DEAD)
1602 	return;
1603 
1604     /* initialize required fields */
1605     strcpy(cp->cn_name, "ttyv0");
1606 }
1607 
1608 static void
1609 sc_cninit(struct consdev *cp)
1610 {
1611     int unit;
1612     int flags;
1613 
1614     sc_get_cons_priority(&unit, &flags);
1615     scinit(unit, flags | SC_KERNEL_CONSOLE);
1616     sc_console_unit = unit;
1617     sc_console = sc_get_stat(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1618     sc_consptr = cp;
1619 }
1620 
1621 static void
1622 sc_cnterm(struct consdev *cp)
1623 {
1624     /* we are not the kernel console any more, release everything */
1625 
1626     if (sc_console_unit < 0)
1627 	return;			/* shouldn't happen */
1628 
1629 #if 0 /* XXX */
1630     sc_clear_screen(sc_console);
1631     sccnupdate(sc_console);
1632 #endif
1633 
1634     scterm(sc_console_unit, SC_KERNEL_CONSOLE);
1635     sc_console_unit = -1;
1636     sc_console = NULL;
1637 }
1638 
1639 static void
1640 sc_cngrab(struct consdev *cp)
1641 {
1642     scr_stat *scp;
1643 
1644     if (!cold &&
1645 	sc_console->sc->cur_scp->index != sc_console->index &&
1646 	sc_console->sc->cur_scp->smode.mode == VT_AUTO &&
1647 	sc_console->smode.mode == VT_AUTO)
1648 	    sc_switch_scr(sc_console->sc, sc_console->index);
1649 
1650     scp = sc_console->sc->cur_scp;
1651 
1652     if (scp->sc->kbd == NULL)
1653 	return;
1654 
1655     if (scp->grabbed++ > 0)
1656 	return;
1657 
1658     /*
1659      * Make sure the keyboard is accessible even when the kbd device
1660      * driver is disabled.
1661      */
1662     kbdd_enable(scp->sc->kbd);
1663 
1664     /* we shall always use the keyboard in the XLATE mode here */
1665     scp->kbd_prev_mode = scp->kbd_mode;
1666     scp->kbd_mode = K_XLATE;
1667     (void)kbdd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1668 
1669     kbdd_poll(scp->sc->kbd, TRUE);
1670 }
1671 
1672 static void
1673 sc_cnungrab(struct consdev *cp)
1674 {
1675     scr_stat *scp;
1676 
1677     scp = sc_console->sc->cur_scp;	/* XXX */
1678     if (scp->sc->kbd == NULL)
1679 	return;
1680 
1681     if (--scp->grabbed > 0)
1682 	return;
1683 
1684     kbdd_poll(scp->sc->kbd, FALSE);
1685 
1686     scp->kbd_mode = scp->kbd_prev_mode;
1687     (void)kbdd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1688     kbdd_disable(scp->sc->kbd);
1689 }
1690 
1691 static void
1692 sc_cnputc(struct consdev *cd, int c)
1693 {
1694     u_char buf[1];
1695     scr_stat *scp = sc_console;
1696 #ifndef SC_NO_HISTORY
1697 #if 0
1698     struct tty *tp;
1699 #endif
1700 #endif /* !SC_NO_HISTORY */
1701     int s;
1702 
1703     /* assert(sc_console != NULL) */
1704 
1705 #ifndef SC_NO_HISTORY
1706     if (scp == scp->sc->cur_scp && scp->status & SLKED) {
1707 	scp->status &= ~SLKED;
1708 	update_kbd_state(scp, scp->status, SLKED);
1709 	if (scp->status & BUFFER_SAVED) {
1710 	    if (!sc_hist_restore(scp))
1711 		sc_remove_cutmarking(scp);
1712 	    scp->status &= ~BUFFER_SAVED;
1713 	    scp->status |= CURSOR_ENABLED;
1714 	    sc_draw_cursor_image(scp);
1715 	}
1716 #if 0
1717 	/*
1718 	 * XXX: Now that TTY's have their own locks, we cannot process
1719 	 * any data after disabling scroll lock. cnputs already holds a
1720 	 * spinlock.
1721 	 */
1722 	tp = SC_DEV(scp->sc, scp->index);
1723 	/* XXX "tp" can be NULL */
1724 	tty_lock(tp);
1725 	if (tty_opened(tp))
1726 	    sctty_outwakeup(tp);
1727 	tty_unlock(tp);
1728 #endif
1729     }
1730 #endif /* !SC_NO_HISTORY */
1731 
1732     buf[0] = c;
1733     sc_puts(scp, buf, 1, 1);
1734 
1735     s = spltty();	/* block sckbdevent and scrn_timer */
1736     sccnupdate(scp);
1737     splx(s);
1738 }
1739 
1740 static int
1741 sc_cngetc(struct consdev *cd)
1742 {
1743     static struct fkeytab fkey;
1744     static int fkeycp;
1745     scr_stat *scp;
1746     const u_char *p;
1747     int s = spltty();	/* block sckbdevent and scrn_timer while we poll */
1748     int c;
1749 
1750     /* assert(sc_console != NULL) */
1751 
1752     /*
1753      * Stop the screen saver and update the screen if necessary.
1754      * What if we have been running in the screen saver code... XXX
1755      */
1756     sc_touch_scrn_saver();
1757     scp = sc_console->sc->cur_scp;	/* XXX */
1758     sccnupdate(scp);
1759 
1760     if (fkeycp < fkey.len) {
1761 	splx(s);
1762 	return fkey.str[fkeycp++];
1763     }
1764 
1765     if (scp->sc->kbd == NULL) {
1766 	splx(s);
1767 	return -1;
1768     }
1769 
1770     c = scgetc(scp->sc, SCGETC_CN | SCGETC_NONBLOCK);
1771 
1772     switch (KEYFLAGS(c)) {
1773     case 0:	/* normal char */
1774 	return KEYCHAR(c);
1775     case FKEY:	/* function key */
1776 	p = (*scp->tsw->te_fkeystr)(scp, c);
1777 	if (p != NULL) {
1778 	    fkey.len = strlen(p);
1779 	    bcopy(p, fkey.str, fkey.len);
1780 	    fkeycp = 1;
1781 	    return fkey.str[0];
1782 	}
1783 	p = kbdd_get_fkeystr(scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
1784 	fkey.len = fkeycp;
1785 	if ((p != NULL) && (fkey.len > 0)) {
1786 	    bcopy(p, fkey.str, fkey.len);
1787 	    fkeycp = 1;
1788 	    return fkey.str[0];
1789 	}
1790 	return c;	/* XXX */
1791     case NOKEY:
1792     case ERRKEY:
1793     default:
1794 	return -1;
1795     }
1796     /* NOT REACHED */
1797 }
1798 
1799 static void
1800 sccnupdate(scr_stat *scp)
1801 {
1802     /* this is a cut-down version of scrn_timer()... */
1803 
1804     if (suspend_in_progress || scp->sc->font_loading_in_progress)
1805 	return;
1806 
1807     if (debugger > 0 || panicstr || shutdown_in_progress) {
1808 	sc_touch_scrn_saver();
1809     } else if (scp != scp->sc->cur_scp) {
1810 	return;
1811     }
1812 
1813     if (!run_scrn_saver)
1814 	scp->sc->flags &= ~SC_SCRN_IDLE;
1815 #ifdef DEV_SPLASH
1816     if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
1817 	if (scp->sc->flags & SC_SCRN_BLANKED)
1818             stop_scrn_saver(scp->sc, current_saver);
1819 #endif
1820 
1821     if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress
1822 	|| scp->sc->switch_in_progress)
1823 	return;
1824     /*
1825      * FIXME: unlike scrn_timer(), we call scrn_update() from here even
1826      * when write_in_progress is non-zero.  XXX
1827      */
1828 
1829     if (!ISGRAPHSC(scp) && !(scp->sc->flags & SC_SCRN_BLANKED))
1830 	scrn_update(scp, TRUE);
1831 }
1832 
1833 static void
1834 scrn_timer(void *arg)
1835 {
1836 #ifndef PC98
1837     static time_t kbd_time_stamp = 0;
1838 #endif
1839     sc_softc_t *sc;
1840     scr_stat *scp;
1841     int again, rate;
1842 
1843     again = (arg != NULL);
1844     if (arg != NULL)
1845 	sc = (sc_softc_t *)arg;
1846     else if (sc_console != NULL)
1847 	sc = sc_console->sc;
1848     else
1849 	return;
1850 
1851     /* find the vty to update */
1852     scp = sc->cur_scp;
1853 
1854     /* don't do anything when we are performing some I/O operations */
1855     if (suspend_in_progress || sc->font_loading_in_progress)
1856 	goto done;
1857 
1858 #ifndef PC98
1859     if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
1860 	/* try to allocate a keyboard automatically */
1861 	if (kbd_time_stamp != time_uptime) {
1862 	    kbd_time_stamp = time_uptime;
1863 	    sc->keyboard = sc_allocate_keyboard(sc, -1);
1864 	    if (sc->keyboard >= 0) {
1865 		sc->kbd = kbd_get_keyboard(sc->keyboard);
1866 		(void)kbdd_ioctl(sc->kbd, KDSKBMODE,
1867 			  (caddr_t)&sc->cur_scp->kbd_mode);
1868 		update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1869 				 LOCK_MASK);
1870 	    }
1871 	}
1872     }
1873 #endif /* PC98 */
1874 
1875     /* should we stop the screen saver? */
1876     if (debugger > 0 || panicstr || shutdown_in_progress)
1877 	sc_touch_scrn_saver();
1878     if (run_scrn_saver) {
1879 	if (time_uptime > sc->scrn_time_stamp + scrn_blank_time)
1880 	    sc->flags |= SC_SCRN_IDLE;
1881 	else
1882 	    sc->flags &= ~SC_SCRN_IDLE;
1883     } else {
1884 	sc->scrn_time_stamp = time_uptime;
1885 	sc->flags &= ~SC_SCRN_IDLE;
1886 	if (scrn_blank_time > 0)
1887 	    run_scrn_saver = TRUE;
1888     }
1889 #ifdef DEV_SPLASH
1890     if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
1891 	if (sc->flags & SC_SCRN_BLANKED)
1892             stop_scrn_saver(sc, current_saver);
1893 #endif
1894 
1895     /* should we just return ? */
1896     if (sc->blink_in_progress || sc->switch_in_progress
1897 	|| sc->write_in_progress)
1898 	goto done;
1899 
1900     /* Update the screen */
1901     scp = sc->cur_scp;		/* cur_scp may have changed... */
1902     if (!ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1903 	scrn_update(scp, TRUE);
1904 
1905 #ifdef DEV_SPLASH
1906     /* should we activate the screen saver? */
1907     if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
1908 	if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
1909 	    (*current_saver)(sc, TRUE);
1910 #endif
1911 
1912 done:
1913     if (again) {
1914 	/*
1915 	 * Use reduced "refresh" rate if we are in graphics and that is not a
1916 	 * graphical screen saver.  In such case we just have nothing to do.
1917 	 */
1918 	if (ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1919 	    rate = 2;
1920 	else
1921 	    rate = 30;
1922 	callout_reset_sbt(&sc->ctimeout, SBT_1S / rate, 0,
1923 	    scrn_timer, sc, C_PREL(1));
1924     }
1925 }
1926 
1927 static int
1928 and_region(int *s1, int *e1, int s2, int e2)
1929 {
1930     if (*e1 < s2 || e2 < *s1)
1931 	return FALSE;
1932     *s1 = imax(*s1, s2);
1933     *e1 = imin(*e1, e2);
1934     return TRUE;
1935 }
1936 
1937 static void
1938 scrn_update(scr_stat *scp, int show_cursor)
1939 {
1940     int start;
1941     int end;
1942     int s;
1943     int e;
1944 
1945     /* assert(scp == scp->sc->cur_scp) */
1946 
1947     SC_VIDEO_LOCK(scp->sc);
1948 
1949 #ifndef SC_NO_CUTPASTE
1950     /* remove the previous mouse pointer image if necessary */
1951     if (scp->status & MOUSE_VISIBLE) {
1952 	s = scp->mouse_pos;
1953 	e = scp->mouse_pos + scp->xsize + 1;
1954 	if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN))
1955 	    || and_region(&s, &e, scp->start, scp->end)
1956 	    || ((scp->status & CURSOR_ENABLED) &&
1957 		(scp->cursor_pos != scp->cursor_oldpos) &&
1958 		(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos)
1959 		 || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) {
1960 	    sc_remove_mouse_image(scp);
1961 	    if (scp->end >= scp->xsize*scp->ysize)
1962 		scp->end = scp->xsize*scp->ysize - 1;
1963 	}
1964     }
1965 #endif /* !SC_NO_CUTPASTE */
1966 
1967 #if 1
1968     /* debug: XXX */
1969     if (scp->end >= scp->xsize*scp->ysize) {
1970 	printf("scrn_update(): scp->end %d > size_of_screen!!\n", scp->end);
1971 	scp->end = scp->xsize*scp->ysize - 1;
1972     }
1973     if (scp->start < 0) {
1974 	printf("scrn_update(): scp->start %d < 0\n", scp->start);
1975 	scp->start = 0;
1976     }
1977 #endif
1978 
1979     /* update screen image */
1980     if (scp->start <= scp->end)  {
1981 	if (scp->mouse_cut_end >= 0) {
1982 	    /* there is a marked region for cut & paste */
1983 	    if (scp->mouse_cut_start <= scp->mouse_cut_end) {
1984 		start = scp->mouse_cut_start;
1985 		end = scp->mouse_cut_end;
1986 	    } else {
1987 		start = scp->mouse_cut_end;
1988 		end = scp->mouse_cut_start - 1;
1989 	    }
1990 	    s = start;
1991 	    e = end;
1992 	    /* does the cut-mark region overlap with the update region? */
1993 	    if (and_region(&s, &e, scp->start, scp->end)) {
1994 		(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
1995 		s = 0;
1996 		e = start - 1;
1997 		if (and_region(&s, &e, scp->start, scp->end))
1998 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1999 		s = end + 1;
2000 		e = scp->xsize*scp->ysize - 1;
2001 		if (and_region(&s, &e, scp->start, scp->end))
2002 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
2003 	    } else {
2004 		(*scp->rndr->draw)(scp, scp->start,
2005 				   scp->end - scp->start + 1, FALSE);
2006 	    }
2007 	} else {
2008 	    (*scp->rndr->draw)(scp, scp->start,
2009 			       scp->end - scp->start + 1, FALSE);
2010 	}
2011     }
2012 
2013     /* we are not to show the cursor and the mouse pointer... */
2014     if (!show_cursor) {
2015         scp->end = 0;
2016         scp->start = scp->xsize*scp->ysize - 1;
2017 	SC_VIDEO_UNLOCK(scp->sc);
2018 	return;
2019     }
2020 
2021     /* update cursor image */
2022     if (scp->status & CURSOR_ENABLED) {
2023 	s = scp->start;
2024 	e = scp->end;
2025         /* did cursor move since last time ? */
2026         if (scp->cursor_pos != scp->cursor_oldpos) {
2027             /* do we need to remove old cursor image ? */
2028             if (!and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
2029                 sc_remove_cursor_image(scp);
2030             sc_draw_cursor_image(scp);
2031         } else {
2032             if (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos))
2033 		/* cursor didn't move, but has been overwritten */
2034 		sc_draw_cursor_image(scp);
2035 	    else if (scp->curs_attr.flags & CONS_BLINK_CURSOR)
2036 		/* if it's a blinking cursor, update it */
2037 		(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
2038 					   sc_inside_cutmark(scp,
2039 					       scp->cursor_pos));
2040         }
2041     }
2042 
2043 #ifndef SC_NO_CUTPASTE
2044     /* update "pseudo" mouse pointer image */
2045     if (scp->sc->flags & SC_MOUSE_ENABLED) {
2046 	if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
2047 	    scp->status &= ~MOUSE_MOVED;
2048 	    sc_draw_mouse_image(scp);
2049 	}
2050     }
2051 #endif /* SC_NO_CUTPASTE */
2052 
2053     scp->end = 0;
2054     scp->start = scp->xsize*scp->ysize - 1;
2055 
2056     SC_VIDEO_UNLOCK(scp->sc);
2057 }
2058 
2059 #ifdef DEV_SPLASH
2060 static int
2061 scsplash_callback(int event, void *arg)
2062 {
2063     sc_softc_t *sc;
2064     int error;
2065 
2066     sc = (sc_softc_t *)arg;
2067 
2068     switch (event) {
2069     case SPLASH_INIT:
2070 	if (add_scrn_saver(scsplash_saver) == 0) {
2071 	    sc->flags &= ~SC_SAVER_FAILED;
2072 	    run_scrn_saver = TRUE;
2073 	    if (cold && !(boothowto & RB_VERBOSE)) {
2074 		scsplash_stick(TRUE);
2075 		(*current_saver)(sc, TRUE);
2076 	    }
2077 	}
2078 	return 0;
2079 
2080     case SPLASH_TERM:
2081 	if (current_saver == scsplash_saver) {
2082 	    scsplash_stick(FALSE);
2083 	    error = remove_scrn_saver(scsplash_saver);
2084 	    if (error)
2085 		return error;
2086 	}
2087 	return 0;
2088 
2089     default:
2090 	return EINVAL;
2091     }
2092 }
2093 
2094 static void
2095 scsplash_saver(sc_softc_t *sc, int show)
2096 {
2097     static int busy = FALSE;
2098     scr_stat *scp;
2099 
2100     if (busy)
2101 	return;
2102     busy = TRUE;
2103 
2104     scp = sc->cur_scp;
2105     if (show) {
2106 	if (!(sc->flags & SC_SAVER_FAILED)) {
2107 	    if (!(sc->flags & SC_SCRN_BLANKED))
2108 		set_scrn_saver_mode(scp, -1, NULL, 0);
2109 	    switch (splash(sc->adp, TRUE)) {
2110 	    case 0:		/* succeeded */
2111 		break;
2112 	    case EAGAIN:	/* try later */
2113 		restore_scrn_saver_mode(scp, FALSE);
2114 		sc_touch_scrn_saver();		/* XXX */
2115 		break;
2116 	    default:
2117 		sc->flags |= SC_SAVER_FAILED;
2118 		scsplash_stick(FALSE);
2119 		restore_scrn_saver_mode(scp, TRUE);
2120 		printf("scsplash_saver(): failed to put up the image\n");
2121 		break;
2122 	    }
2123 	}
2124     } else if (!sticky_splash) {
2125 	if ((sc->flags & SC_SCRN_BLANKED) && (splash(sc->adp, FALSE) == 0))
2126 	    restore_scrn_saver_mode(scp, TRUE);
2127     }
2128     busy = FALSE;
2129 }
2130 
2131 static int
2132 add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2133 {
2134 #if 0
2135     int error;
2136 
2137     if (current_saver != none_saver) {
2138 	error = remove_scrn_saver(current_saver);
2139 	if (error)
2140 	    return error;
2141     }
2142 #endif
2143     if (current_saver != none_saver)
2144 	return EBUSY;
2145 
2146     run_scrn_saver = FALSE;
2147     saver_mode = CONS_LKM_SAVER;
2148     current_saver = this_saver;
2149     return 0;
2150 }
2151 
2152 static int
2153 remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2154 {
2155     if (current_saver != this_saver)
2156 	return EINVAL;
2157 
2158 #if 0
2159     /*
2160      * In order to prevent `current_saver' from being called by
2161      * the timeout routine `scrn_timer()' while we manipulate
2162      * the saver list, we shall set `current_saver' to `none_saver'
2163      * before stopping the current saver, rather than blocking by `splXX()'.
2164      */
2165     current_saver = none_saver;
2166     if (scrn_blanked)
2167         stop_scrn_saver(this_saver);
2168 #endif
2169 
2170     /* unblank all blanked screens */
2171     wait_scrn_saver_stop(NULL);
2172     if (scrn_blanked)
2173 	return EBUSY;
2174 
2175     current_saver = none_saver;
2176     return 0;
2177 }
2178 
2179 static int
2180 set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
2181 {
2182     int s;
2183 
2184     /* assert(scp == scp->sc->cur_scp) */
2185     s = spltty();
2186     if (!ISGRAPHSC(scp))
2187 	sc_remove_cursor_image(scp);
2188     scp->splash_save_mode = scp->mode;
2189     scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
2190     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
2191     scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
2192     scp->sc->flags |= SC_SCRN_BLANKED;
2193     ++scrn_blanked;
2194     splx(s);
2195     if (mode < 0)
2196 	return 0;
2197     scp->mode = mode;
2198     if (set_mode(scp) == 0) {
2199 	if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
2200 	    scp->status |= GRAPHICS_MODE;
2201 #ifndef SC_NO_PALETTE_LOADING
2202 	if (pal != NULL)
2203 	    vidd_load_palette(scp->sc->adp, pal);
2204 #endif
2205 	sc_set_border(scp, border);
2206 	return 0;
2207     } else {
2208 	s = spltty();
2209 	scp->mode = scp->splash_save_mode;
2210 	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2211 	scp->status |= scp->splash_save_status;
2212 	splx(s);
2213 	return 1;
2214     }
2215 }
2216 
2217 static int
2218 restore_scrn_saver_mode(scr_stat *scp, int changemode)
2219 {
2220     int mode;
2221     int status;
2222     int s;
2223 
2224     /* assert(scp == scp->sc->cur_scp) */
2225     s = spltty();
2226     mode = scp->mode;
2227     status = scp->status;
2228     scp->mode = scp->splash_save_mode;
2229     scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2230     scp->status |= scp->splash_save_status;
2231     scp->sc->flags &= ~SC_SCRN_BLANKED;
2232     if (!changemode) {
2233 	if (!ISGRAPHSC(scp))
2234 	    sc_draw_cursor_image(scp);
2235 	--scrn_blanked;
2236 	splx(s);
2237 	return 0;
2238     }
2239     if (set_mode(scp) == 0) {
2240 #ifndef SC_NO_PALETTE_LOADING
2241 #ifdef SC_PIXEL_MODE
2242 	if (scp->sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
2243 	    vidd_load_palette(scp->sc->adp, scp->sc->palette2);
2244 	else
2245 #endif
2246 	vidd_load_palette(scp->sc->adp, scp->sc->palette);
2247 #endif
2248 	--scrn_blanked;
2249 	splx(s);
2250 	return 0;
2251     } else {
2252 	scp->mode = mode;
2253 	scp->status = status;
2254 	splx(s);
2255 	return 1;
2256     }
2257 }
2258 
2259 static void
2260 stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
2261 {
2262     (*saver)(sc, FALSE);
2263     run_scrn_saver = FALSE;
2264     /* the screen saver may have chosen not to stop after all... */
2265     if (sc->flags & SC_SCRN_BLANKED)
2266 	return;
2267 
2268     mark_all(sc->cur_scp);
2269     if (sc->delayed_next_scr)
2270 	sc_switch_scr(sc, sc->delayed_next_scr - 1);
2271     if (debugger == 0)
2272 	wakeup(&scrn_blanked);
2273 }
2274 
2275 static int
2276 wait_scrn_saver_stop(sc_softc_t *sc)
2277 {
2278     int error = 0;
2279 
2280     while (scrn_blanked > 0) {
2281 	run_scrn_saver = FALSE;
2282 	if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
2283 	    error = 0;
2284 	    break;
2285 	}
2286 	error = tsleep(&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
2287 	if ((error != 0) && (error != ERESTART))
2288 	    break;
2289     }
2290     run_scrn_saver = FALSE;
2291     return error;
2292 }
2293 #endif /* DEV_SPLASH */
2294 
2295 void
2296 sc_touch_scrn_saver(void)
2297 {
2298     scsplash_stick(FALSE);
2299     run_scrn_saver = FALSE;
2300 }
2301 
2302 int
2303 sc_switch_scr(sc_softc_t *sc, u_int next_scr)
2304 {
2305     scr_stat *cur_scp;
2306     struct tty *tp;
2307     struct proc *p;
2308     int s;
2309 
2310     DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
2311 
2312     if (sc->cur_scp == NULL)
2313 	return (0);
2314 
2315     /* prevent switch if previously requested */
2316     if (sc->flags & SC_SCRN_VTYLOCK) {
2317 	    sc_bell(sc->cur_scp, sc->cur_scp->bell_pitch,
2318 		sc->cur_scp->bell_duration);
2319 	    return EPERM;
2320     }
2321 
2322     /* delay switch if the screen is blanked or being updated */
2323     if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress
2324 	|| sc->blink_in_progress) {
2325 	sc->delayed_next_scr = next_scr + 1;
2326 	sc_touch_scrn_saver();
2327 	DPRINTF(5, ("switch delayed\n"));
2328 	return 0;
2329     }
2330     sc->delayed_next_scr = 0;
2331 
2332     s = spltty();
2333     cur_scp = sc->cur_scp;
2334 
2335     /* we are in the middle of the vty switching process... */
2336     if (sc->switch_in_progress
2337 	&& (cur_scp->smode.mode == VT_PROCESS)
2338 	&& cur_scp->proc) {
2339 	p = pfind(cur_scp->pid);
2340 	if (cur_scp->proc != p) {
2341 	    if (p)
2342 		PROC_UNLOCK(p);
2343 	    /*
2344 	     * The controlling process has died!!.  Do some clean up.
2345 	     * NOTE:`cur_scp->proc' and `cur_scp->smode.mode'
2346 	     * are not reset here yet; they will be cleared later.
2347 	     */
2348 	    DPRINTF(5, ("cur_scp controlling process %d died, ",
2349 	       cur_scp->pid));
2350 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2351 		/*
2352 		 * Force the previous switch to finish, but return now
2353 		 * with error.
2354 		 */
2355 		DPRINTF(5, ("reset WAIT_REL, "));
2356 		finish_vt_rel(cur_scp, TRUE, &s);
2357 		splx(s);
2358 		DPRINTF(5, ("finishing previous switch\n"));
2359 		return EINVAL;
2360 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2361 		/* let's assume screen switch has been completed. */
2362 		DPRINTF(5, ("reset WAIT_ACQ, "));
2363 		finish_vt_acq(cur_scp);
2364 	    } else {
2365 		/*
2366 	 	 * We are in between screen release and acquisition, and
2367 		 * reached here via scgetc() or scrn_timer() which has
2368 		 * interrupted exchange_scr(). Don't do anything stupid.
2369 		 */
2370 		DPRINTF(5, ("waiting nothing, "));
2371 	    }
2372 	} else {
2373 	    if (p)
2374 		PROC_UNLOCK(p);
2375 	    /*
2376 	     * The controlling process is alive, but not responding...
2377 	     * It is either buggy or it may be just taking time.
2378 	     * The following code is a gross kludge to cope with this
2379 	     * problem for which there is no clean solution. XXX
2380 	     */
2381 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2382 		switch (sc->switch_in_progress++) {
2383 		case 1:
2384 		    break;
2385 		case 2:
2386 		    DPRINTF(5, ("sending relsig again, "));
2387 		    signal_vt_rel(cur_scp);
2388 		    break;
2389 		case 3:
2390 		    break;
2391 		case 4:
2392 		default:
2393 		    /*
2394 		     * Act as if the controlling program returned
2395 		     * VT_FALSE.
2396 		     */
2397 		    DPRINTF(5, ("force reset WAIT_REL, "));
2398 		    finish_vt_rel(cur_scp, FALSE, &s);
2399 		    splx(s);
2400 		    DPRINTF(5, ("act as if VT_FALSE was seen\n"));
2401 		    return EINVAL;
2402 		}
2403 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2404 		switch (sc->switch_in_progress++) {
2405 		case 1:
2406 		    break;
2407 		case 2:
2408 		    DPRINTF(5, ("sending acqsig again, "));
2409 		    signal_vt_acq(cur_scp);
2410 		    break;
2411 		case 3:
2412 		    break;
2413 		case 4:
2414 		default:
2415 		     /* clear the flag and finish the previous switch */
2416 		    DPRINTF(5, ("force reset WAIT_ACQ, "));
2417 		    finish_vt_acq(cur_scp);
2418 		    break;
2419 		}
2420 	    }
2421 	}
2422     }
2423 
2424     /*
2425      * Return error if an invalid argument is given, or vty switch
2426      * is still in progress.
2427      */
2428     if ((next_scr < sc->first_vty) || (next_scr >= sc->first_vty + sc->vtys)
2429 	|| sc->switch_in_progress) {
2430 	splx(s);
2431 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2432 	DPRINTF(5, ("error 1\n"));
2433 	return EINVAL;
2434     }
2435 
2436     /*
2437      * Don't allow switching away from the graphics mode vty
2438      * if the switch mode is VT_AUTO, unless the next vty is the same
2439      * as the current or the current vty has been closed (but showing).
2440      */
2441     tp = SC_DEV(sc, cur_scp->index);
2442     if ((cur_scp->index != next_scr)
2443 	&& tty_opened_ns(tp)
2444 	&& (cur_scp->smode.mode == VT_AUTO)
2445 	&& ISGRAPHSC(cur_scp)) {
2446 	splx(s);
2447 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2448 	DPRINTF(5, ("error, graphics mode\n"));
2449 	return EINVAL;
2450     }
2451 
2452     /*
2453      * Is the wanted vty open? Don't allow switching to a closed vty.
2454      * If we are in DDB, don't switch to a vty in the VT_PROCESS mode.
2455      * Note that we always allow the user to switch to the kernel
2456      * console even if it is closed.
2457      */
2458     if ((sc_console == NULL) || (next_scr != sc_console->index)) {
2459 	tp = SC_DEV(sc, next_scr);
2460 	if (!tty_opened_ns(tp)) {
2461 	    splx(s);
2462 	    sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2463 	    DPRINTF(5, ("error 2, requested vty isn't open!\n"));
2464 	    return EINVAL;
2465 	}
2466 	if ((debugger > 0) && (SC_STAT(tp)->smode.mode == VT_PROCESS)) {
2467 	    splx(s);
2468 	    DPRINTF(5, ("error 3, requested vty is in the VT_PROCESS mode\n"));
2469 	    return EINVAL;
2470 	}
2471     }
2472 
2473     /* this is the start of vty switching process... */
2474     ++sc->switch_in_progress;
2475     sc->old_scp = cur_scp;
2476     sc->new_scp = sc_get_stat(SC_DEV(sc, next_scr));
2477     if (sc->new_scp == sc->old_scp) {
2478 	sc->switch_in_progress = 0;
2479 	/*
2480 	 * XXX wakeup() locks the scheduler lock which will hang if
2481 	 * the lock is in an in-between state, e.g., when we stop at
2482 	 * a breakpoint at fork_exit.  It has always been wrong to call
2483 	 * wakeup() when the debugger is active.  In RELENG_4, wakeup()
2484 	 * is supposed to be locked by splhigh(), but the debugger may
2485 	 * be invoked at splhigh().
2486 	 */
2487 	if (debugger == 0)
2488 	    wakeup(VTY_WCHAN(sc,next_scr));
2489 	splx(s);
2490 	DPRINTF(5, ("switch done (new == old)\n"));
2491 	return 0;
2492     }
2493 
2494     /* has controlling process died? */
2495     vt_proc_alive(sc->old_scp);
2496     vt_proc_alive(sc->new_scp);
2497 
2498     /* wait for the controlling process to release the screen, if necessary */
2499     if (signal_vt_rel(sc->old_scp)) {
2500 	splx(s);
2501 	return 0;
2502     }
2503 
2504     /* go set up the new vty screen */
2505     splx(s);
2506     exchange_scr(sc);
2507     s = spltty();
2508 
2509     /* wake up processes waiting for this vty */
2510     if (debugger == 0)
2511 	wakeup(VTY_WCHAN(sc,next_scr));
2512 
2513     /* wait for the controlling process to acknowledge, if necessary */
2514     if (signal_vt_acq(sc->cur_scp)) {
2515 	splx(s);
2516 	return 0;
2517     }
2518 
2519     sc->switch_in_progress = 0;
2520     if (sc->unit == sc_console_unit)
2521 	cnavailable(sc_consptr,  TRUE);
2522     splx(s);
2523     DPRINTF(5, ("switch done\n"));
2524 
2525     return 0;
2526 }
2527 
2528 static int
2529 do_switch_scr(sc_softc_t *sc, int s)
2530 {
2531     vt_proc_alive(sc->new_scp);
2532 
2533     splx(s);
2534     exchange_scr(sc);
2535     s = spltty();
2536     /* sc->cur_scp == sc->new_scp */
2537     wakeup(VTY_WCHAN(sc,sc->cur_scp->index));
2538 
2539     /* wait for the controlling process to acknowledge, if necessary */
2540     if (!signal_vt_acq(sc->cur_scp)) {
2541 	sc->switch_in_progress = 0;
2542 	if (sc->unit == sc_console_unit)
2543 	    cnavailable(sc_consptr,  TRUE);
2544     }
2545 
2546     return s;
2547 }
2548 
2549 static int
2550 vt_proc_alive(scr_stat *scp)
2551 {
2552     struct proc *p;
2553 
2554     if (scp->proc) {
2555 	if ((p = pfind(scp->pid)) != NULL)
2556 	    PROC_UNLOCK(p);
2557 	if (scp->proc == p)
2558 	    return TRUE;
2559 	scp->proc = NULL;
2560 	scp->smode.mode = VT_AUTO;
2561 	DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
2562     }
2563     return FALSE;
2564 }
2565 
2566 static int
2567 signal_vt_rel(scr_stat *scp)
2568 {
2569     if (scp->smode.mode != VT_PROCESS)
2570 	return FALSE;
2571     scp->status |= SWITCH_WAIT_REL;
2572     PROC_LOCK(scp->proc);
2573     kern_psignal(scp->proc, scp->smode.relsig);
2574     PROC_UNLOCK(scp->proc);
2575     DPRINTF(5, ("sending relsig to %d\n", scp->pid));
2576     return TRUE;
2577 }
2578 
2579 static int
2580 signal_vt_acq(scr_stat *scp)
2581 {
2582     if (scp->smode.mode != VT_PROCESS)
2583 	return FALSE;
2584     if (scp->sc->unit == sc_console_unit)
2585 	cnavailable(sc_consptr,  FALSE);
2586     scp->status |= SWITCH_WAIT_ACQ;
2587     PROC_LOCK(scp->proc);
2588     kern_psignal(scp->proc, scp->smode.acqsig);
2589     PROC_UNLOCK(scp->proc);
2590     DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
2591     return TRUE;
2592 }
2593 
2594 static int
2595 finish_vt_rel(scr_stat *scp, int release, int *s)
2596 {
2597     if (scp == scp->sc->old_scp && scp->status & SWITCH_WAIT_REL) {
2598 	scp->status &= ~SWITCH_WAIT_REL;
2599 	if (release)
2600 	    *s = do_switch_scr(scp->sc, *s);
2601 	else
2602 	    scp->sc->switch_in_progress = 0;
2603 	return 0;
2604     }
2605     return EINVAL;
2606 }
2607 
2608 static int
2609 finish_vt_acq(scr_stat *scp)
2610 {
2611     if (scp == scp->sc->new_scp && scp->status & SWITCH_WAIT_ACQ) {
2612 	scp->status &= ~SWITCH_WAIT_ACQ;
2613 	scp->sc->switch_in_progress = 0;
2614 	return 0;
2615     }
2616     return EINVAL;
2617 }
2618 
2619 static void
2620 exchange_scr(sc_softc_t *sc)
2621 {
2622     scr_stat *scp;
2623 
2624     /* save the current state of video and keyboard */
2625     sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
2626     if (!ISGRAPHSC(sc->old_scp))
2627 	sc_remove_cursor_image(sc->old_scp);
2628     if (sc->old_scp->kbd_mode == K_XLATE)
2629 	save_kbd_state(sc->old_scp);
2630 
2631     /* set up the video for the new screen */
2632     scp = sc->cur_scp = sc->new_scp;
2633 #ifdef PC98
2634     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp) || ISUNKNOWNSC(sc->new_scp))
2635 #else
2636     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
2637 #endif
2638 	set_mode(scp);
2639 #ifndef __sparc64__
2640     else
2641 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2642 		    (void *)sc->adp->va_window, FALSE);
2643 #endif
2644     scp->status |= MOUSE_HIDDEN;
2645     sc_move_cursor(scp, scp->xpos, scp->ypos);
2646     if (!ISGRAPHSC(scp))
2647 	sc_set_cursor_image(scp);
2648 #ifndef SC_NO_PALETTE_LOADING
2649     if (ISGRAPHSC(sc->old_scp)) {
2650 #ifdef SC_PIXEL_MODE
2651 	if (sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
2652 	    vidd_load_palette(sc->adp, sc->palette2);
2653 	else
2654 #endif
2655 	vidd_load_palette(sc->adp, sc->palette);
2656     }
2657 #endif
2658     sc_set_border(scp, scp->border);
2659 
2660     /* set up the keyboard for the new screen */
2661     if (sc->old_scp->kbd_mode != scp->kbd_mode)
2662 	(void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
2663     update_kbd_state(scp, scp->status, LOCK_MASK);
2664 
2665     mark_all(scp);
2666 }
2667 
2668 static void
2669 sc_puts(scr_stat *scp, u_char *buf, int len, int kernel)
2670 {
2671     int need_unlock = 0;
2672 
2673 #ifdef DEV_SPLASH
2674     /* make screensaver happy */
2675     if (!sticky_splash && scp == scp->sc->cur_scp && !sc_saver_keyb_only)
2676 	run_scrn_saver = FALSE;
2677 #endif
2678 
2679     if (scp->tsw) {
2680 	if (!kdb_active && !mtx_owned(&scp->scr_lock)) {
2681 		need_unlock = 1;
2682 		mtx_lock_spin(&scp->scr_lock);
2683 	}
2684 	(*scp->tsw->te_puts)(scp, buf, len, kernel);
2685 	if (need_unlock)
2686 		mtx_unlock_spin(&scp->scr_lock);
2687     }
2688 
2689     if (scp->sc->delayed_next_scr)
2690 	sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
2691 }
2692 
2693 void
2694 sc_draw_cursor_image(scr_stat *scp)
2695 {
2696     /* assert(scp == scp->sc->cur_scp); */
2697     SC_VIDEO_LOCK(scp->sc);
2698     (*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
2699 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, TRUE,
2700 			      sc_inside_cutmark(scp, scp->cursor_pos));
2701     scp->cursor_oldpos = scp->cursor_pos;
2702     SC_VIDEO_UNLOCK(scp->sc);
2703 }
2704 
2705 void
2706 sc_remove_cursor_image(scr_stat *scp)
2707 {
2708     /* assert(scp == scp->sc->cur_scp); */
2709     SC_VIDEO_LOCK(scp->sc);
2710     (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
2711 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, FALSE,
2712 			      sc_inside_cutmark(scp, scp->cursor_oldpos));
2713     SC_VIDEO_UNLOCK(scp->sc);
2714 }
2715 
2716 static void
2717 update_cursor_image(scr_stat *scp)
2718 {
2719     /* assert(scp == scp->sc->cur_scp); */
2720     sc_remove_cursor_image(scp);
2721     sc_set_cursor_image(scp);
2722     sc_draw_cursor_image(scp);
2723 }
2724 
2725 void
2726 sc_set_cursor_image(scr_stat *scp)
2727 {
2728     scp->curs_attr.flags = scp->curr_curs_attr.flags;
2729     if (scp->curs_attr.flags & CONS_HIDDEN_CURSOR) {
2730 	/* hidden cursor is internally represented as zero-height underline */
2731 	scp->curs_attr.flags = CONS_CHAR_CURSOR;
2732 	scp->curs_attr.base = scp->curs_attr.height = 0;
2733     } else if (scp->curs_attr.flags & CONS_CHAR_CURSOR) {
2734 	scp->curs_attr.base = imin(scp->curr_curs_attr.base,
2735 				  scp->font_size - 1);
2736 	scp->curs_attr.height = imin(scp->curr_curs_attr.height,
2737 				    scp->font_size - scp->curs_attr.base);
2738     } else {	/* block cursor */
2739 	scp->curs_attr.base = 0;
2740 	scp->curs_attr.height = scp->font_size;
2741     }
2742 
2743     /* assert(scp == scp->sc->cur_scp); */
2744     SC_VIDEO_LOCK(scp->sc);
2745     (*scp->rndr->set_cursor)(scp, scp->curs_attr.base, scp->curs_attr.height,
2746 			     scp->curs_attr.flags & CONS_BLINK_CURSOR);
2747     SC_VIDEO_UNLOCK(scp->sc);
2748 }
2749 
2750 static void
2751 change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2752 {
2753     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp))
2754 	sc_remove_cursor_image(scp);
2755 
2756     if (base >= 0)
2757 	scp->curr_curs_attr.base = base;
2758     if (height >= 0)
2759 	scp->curr_curs_attr.height = height;
2760     if (flags & CONS_RESET_CURSOR)
2761 	scp->curr_curs_attr = scp->dflt_curs_attr;
2762     else
2763 	scp->curr_curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2764 
2765     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp)) {
2766 	sc_set_cursor_image(scp);
2767 	sc_draw_cursor_image(scp);
2768     }
2769 }
2770 
2771 void
2772 sc_change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2773 {
2774     sc_softc_t *sc;
2775     struct tty *tp;
2776     int s;
2777     int i;
2778 
2779     s = spltty();
2780     if ((flags != -1) && (flags & CONS_LOCAL_CURSOR)) {
2781 	/* local (per vty) change */
2782 	change_cursor_shape(scp, flags, base, height);
2783 	splx(s);
2784 	return;
2785     }
2786 
2787     /* global change */
2788     sc = scp->sc;
2789     if (base >= 0)
2790 	sc->curs_attr.base = base;
2791     if (height >= 0)
2792 	sc->curs_attr.height = height;
2793     if (flags != -1) {
2794 	if (flags & CONS_RESET_CURSOR)
2795 	    sc->curs_attr = sc->dflt_curs_attr;
2796 	else
2797 	    sc->curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2798     }
2799 
2800     for (i = sc->first_vty; i < sc->first_vty + sc->vtys; ++i) {
2801 	if ((tp = SC_DEV(sc, i)) == NULL)
2802 	    continue;
2803 	if ((scp = sc_get_stat(tp)) == NULL)
2804 	    continue;
2805 	scp->dflt_curs_attr = sc->curs_attr;
2806 	change_cursor_shape(scp, CONS_RESET_CURSOR, -1, -1);
2807     }
2808     splx(s);
2809 }
2810 
2811 static void
2812 scinit(int unit, int flags)
2813 {
2814 
2815     /*
2816      * When syscons is being initialized as the kernel console, malloc()
2817      * is not yet functional, because various kernel structures has not been
2818      * fully initialized yet.  Therefore, we need to declare the following
2819      * static buffers for the console.  This is less than ideal,
2820      * but is necessry evil for the time being.  XXX
2821      */
2822 #ifdef PC98
2823     static u_short sc_buffer[ROW*COL*2];/* XXX */
2824 #else
2825     static u_short sc_buffer[ROW*COL];	/* XXX */
2826 #endif
2827 #ifndef SC_NO_FONT_LOADING
2828     static u_char font_8[256*8];
2829     static u_char font_14[256*14];
2830     static u_char font_16[256*16];
2831 #endif
2832 
2833     sc_softc_t *sc;
2834     scr_stat *scp;
2835     video_adapter_t *adp;
2836     int col;
2837     int row;
2838     int i;
2839 
2840     /* one time initialization */
2841     if (init_done == COLD)
2842 	sc_get_bios_values(&bios_value);
2843     init_done = WARM;
2844 
2845     /*
2846      * Allocate resources.  Even if we are being called for the second
2847      * time, we must allocate them again, because they might have
2848      * disappeared...
2849      */
2850     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2851     if ((sc->flags & SC_INIT_DONE) == 0)
2852 	SC_VIDEO_LOCKINIT(sc);
2853 
2854     adp = NULL;
2855     if (sc->adapter >= 0) {
2856 	vid_release(sc->adp, (void *)&sc->adapter);
2857 	adp = sc->adp;
2858 	sc->adp = NULL;
2859     }
2860     if (sc->keyboard >= 0) {
2861 	DPRINTF(5, ("sc%d: releasing kbd%d\n", unit, sc->keyboard));
2862 	i = kbd_release(sc->kbd, (void *)&sc->keyboard);
2863 	DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
2864 	if (sc->kbd != NULL) {
2865 	    DPRINTF(5, ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
2866 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2867 	}
2868 	sc->kbd = NULL;
2869     }
2870     sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
2871     sc->adp = vid_get_adapter(sc->adapter);
2872     /* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
2873 
2874     sc->keyboard = sc_allocate_keyboard(sc, unit);
2875     DPRINTF(1, ("sc%d: keyboard %d\n", unit, sc->keyboard));
2876 
2877     sc->kbd = kbd_get_keyboard(sc->keyboard);
2878     if (sc->kbd != NULL) {
2879 	DPRINTF(1, ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n",
2880 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2881     }
2882 
2883     if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
2884 
2885 	sc->initial_mode = sc->adp->va_initial_mode;
2886 
2887 #ifndef SC_NO_FONT_LOADING
2888 	if (flags & SC_KERNEL_CONSOLE) {
2889 	    sc->font_8 = font_8;
2890 	    sc->font_14 = font_14;
2891 	    sc->font_16 = font_16;
2892 	} else if (sc->font_8 == NULL) {
2893 	    /* assert(sc_malloc) */
2894 	    sc->font_8 = malloc(sizeof(font_8), M_DEVBUF, M_WAITOK);
2895 	    sc->font_14 = malloc(sizeof(font_14), M_DEVBUF, M_WAITOK);
2896 	    sc->font_16 = malloc(sizeof(font_16), M_DEVBUF, M_WAITOK);
2897 	}
2898 #endif
2899 
2900 	/* extract the hardware cursor location and hide the cursor for now */
2901 	vidd_read_hw_cursor(sc->adp, &col, &row);
2902 	vidd_set_hw_cursor(sc->adp, -1, -1);
2903 
2904 	/* set up the first console */
2905 	sc->first_vty = unit*MAXCONS;
2906 	sc->vtys = MAXCONS;		/* XXX: should be configurable */
2907 	if (flags & SC_KERNEL_CONSOLE) {
2908 	    /*
2909 	     * Set up devs structure but don't use it yet, calling make_dev()
2910 	     * might panic kernel.  Wait for sc_attach_unit() to actually
2911 	     * create the devices.
2912 	     */
2913 	    sc->dev = main_devs;
2914 	    scp = &main_console;
2915 	    init_scp(sc, sc->first_vty, scp);
2916 	    sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize, scp->ysize,
2917 			(void *)sc_buffer, FALSE);
2918 
2919 	    /* move cursors to the initial positions */
2920 	    if (col >= scp->xsize)
2921 		col = 0;
2922 	    if (row >= scp->ysize)
2923 		row = scp->ysize - 1;
2924 	    scp->xpos = col;
2925 	    scp->ypos = row;
2926 	    scp->cursor_pos = scp->cursor_oldpos = row*scp->xsize + col;
2927 
2928 	    if (sc_init_emulator(scp, SC_DFLT_TERM))
2929 		sc_init_emulator(scp, "*");
2930 	    (*scp->tsw->te_default_attr)(scp,
2931 					 user_default.std_color,
2932 					 user_default.rev_color);
2933 	} else {
2934 	    /* assert(sc_malloc) */
2935 	    sc->dev = malloc(sizeof(struct tty *)*sc->vtys, M_DEVBUF,
2936 	        M_WAITOK|M_ZERO);
2937 	    sc->dev[0] = sc_alloc_tty(0, unit * MAXCONS);
2938 	    scp = alloc_scp(sc, sc->first_vty);
2939 	    SC_STAT(sc->dev[0]) = scp;
2940 	}
2941 	sc->cur_scp = scp;
2942 
2943 #ifndef __sparc64__
2944 	/* copy screen to temporary buffer */
2945 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2946 		    (void *)scp->sc->adp->va_window, FALSE);
2947 	if (ISTEXTSC(scp))
2948 	    sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0, scp->xsize*scp->ysize);
2949 #endif
2950 
2951 	if (bios_value.cursor_end < scp->font_size)
2952 	    sc->dflt_curs_attr.base = scp->font_size -
2953 					  bios_value.cursor_end - 1;
2954 	else
2955 	    sc->dflt_curs_attr.base = 0;
2956 	i = bios_value.cursor_end - bios_value.cursor_start + 1;
2957 	sc->dflt_curs_attr.height = imin(i, scp->font_size);
2958 	sc->dflt_curs_attr.flags = 0;
2959 	sc->curs_attr = sc->dflt_curs_attr;
2960 	scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
2961 
2962 #ifndef SC_NO_SYSMOUSE
2963 	sc_mouse_move(scp, scp->xpixel/2, scp->ypixel/2);
2964 #endif
2965 	if (!ISGRAPHSC(scp)) {
2966     	    sc_set_cursor_image(scp);
2967     	    sc_draw_cursor_image(scp);
2968 	}
2969 
2970 	/* save font and palette */
2971 #ifndef SC_NO_FONT_LOADING
2972 	sc->fonts_loaded = 0;
2973 	if (ISFONTAVAIL(sc->adp->va_flags)) {
2974 #ifdef SC_DFLT_FONT
2975 	    bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
2976 	    bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
2977 	    bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
2978 	    sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
2979 	    if (scp->font_size < 14) {
2980 		sc_load_font(scp, 0, 8, 8, sc->font_8, 0, 256);
2981 	    } else if (scp->font_size >= 16) {
2982 		sc_load_font(scp, 0, 16, 8, sc->font_16, 0, 256);
2983 	    } else {
2984 		sc_load_font(scp, 0, 14, 8, sc->font_14, 0, 256);
2985 	    }
2986 #else /* !SC_DFLT_FONT */
2987 	    if (scp->font_size < 14) {
2988 		sc_save_font(scp, 0, 8, 8, sc->font_8, 0, 256);
2989 		sc->fonts_loaded = FONT_8;
2990 	    } else if (scp->font_size >= 16) {
2991 		sc_save_font(scp, 0, 16, 8, sc->font_16, 0, 256);
2992 		sc->fonts_loaded = FONT_16;
2993 	    } else {
2994 		sc_save_font(scp, 0, 14, 8, sc->font_14, 0, 256);
2995 		sc->fonts_loaded = FONT_14;
2996 	    }
2997 #endif /* SC_DFLT_FONT */
2998 	    /* FONT KLUDGE: always use the font page #0. XXX */
2999 	    sc_show_font(scp, 0);
3000 	}
3001 #endif /* !SC_NO_FONT_LOADING */
3002 
3003 #ifndef SC_NO_PALETTE_LOADING
3004 	vidd_save_palette(sc->adp, sc->palette);
3005 #ifdef SC_PIXEL_MODE
3006 	for (i = 0; i < sizeof(sc->palette2); i++)
3007 		sc->palette2[i] = i / 3;
3008 #endif
3009 #endif
3010 
3011 #ifdef DEV_SPLASH
3012 	if (!(sc->flags & SC_SPLASH_SCRN)) {
3013 	    /* we are ready to put up the splash image! */
3014 	    splash_init(sc->adp, scsplash_callback, sc);
3015 	    sc->flags |= SC_SPLASH_SCRN;
3016 	}
3017 #endif
3018     }
3019 
3020     /* the rest is not necessary, if we have done it once */
3021     if (sc->flags & SC_INIT_DONE)
3022 	return;
3023 
3024     /* initialize mapscrn arrays to a one to one map */
3025     for (i = 0; i < sizeof(sc->scr_map); i++)
3026 	sc->scr_map[i] = sc->scr_rmap[i] = i;
3027 #ifdef PC98
3028     sc->scr_map[0x5c] = (u_char)0xfc;	/* for backslash */
3029 #endif
3030 
3031     sc->flags |= SC_INIT_DONE;
3032 }
3033 
3034 static void
3035 scterm(int unit, int flags)
3036 {
3037     sc_softc_t *sc;
3038     scr_stat *scp;
3039 
3040     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
3041     if (sc == NULL)
3042 	return;			/* shouldn't happen */
3043 
3044 #ifdef DEV_SPLASH
3045     /* this console is no longer available for the splash screen */
3046     if (sc->flags & SC_SPLASH_SCRN) {
3047 	splash_term(sc->adp);
3048 	sc->flags &= ~SC_SPLASH_SCRN;
3049     }
3050 #endif
3051 
3052 #if 0 /* XXX */
3053     /* move the hardware cursor to the upper-left corner */
3054     vidd_set_hw_cursor(sc->adp, 0, 0);
3055 #endif
3056 
3057     /* release the keyboard and the video card */
3058     if (sc->keyboard >= 0)
3059 	kbd_release(sc->kbd, &sc->keyboard);
3060     if (sc->adapter >= 0)
3061 	vid_release(sc->adp, &sc->adapter);
3062 
3063     /* stop the terminal emulator, if any */
3064     scp = sc_get_stat(sc->dev[0]);
3065     if (scp->tsw)
3066 	(*scp->tsw->te_term)(scp, &scp->ts);
3067     if (scp->ts != NULL)
3068 	free(scp->ts, M_DEVBUF);
3069     mtx_destroy(&scp->scr_lock);
3070 
3071     /* clear the structure */
3072     if (!(flags & SC_KERNEL_CONSOLE)) {
3073 	/* XXX: We need delete_dev() for this */
3074 	free(sc->dev, M_DEVBUF);
3075 #if 0
3076 	/* XXX: We need a ttyunregister for this */
3077 	free(sc->tty, M_DEVBUF);
3078 #endif
3079 #ifndef SC_NO_FONT_LOADING
3080 	free(sc->font_8, M_DEVBUF);
3081 	free(sc->font_14, M_DEVBUF);
3082 	free(sc->font_16, M_DEVBUF);
3083 #endif
3084 	/* XXX vtb, history */
3085     }
3086     bzero(sc, sizeof(*sc));
3087     sc->keyboard = -1;
3088     sc->adapter = -1;
3089 }
3090 
3091 static void
3092 scshutdown(__unused void *arg, __unused int howto)
3093 {
3094 
3095 	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3096 	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3097 	KASSERT(sc_console->sc->cur_scp != NULL,
3098 	    ("sc_console->sc->cur_scp != NULL"));
3099 
3100 	sc_touch_scrn_saver();
3101 	if (!cold &&
3102 	    sc_console->sc->cur_scp->index != sc_console->index &&
3103 	    sc_console->sc->cur_scp->smode.mode == VT_AUTO &&
3104 	    sc_console->smode.mode == VT_AUTO)
3105 		sc_switch_scr(sc_console->sc, sc_console->index);
3106 	shutdown_in_progress = TRUE;
3107 }
3108 
3109 static void
3110 scsuspend(__unused void *arg)
3111 {
3112 	int retry;
3113 
3114 	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3115 	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3116 	KASSERT(sc_console->sc->cur_scp != NULL,
3117 	    ("sc_console->sc->cur_scp != NULL"));
3118 
3119 	sc_susp_scr = sc_console->sc->cur_scp->index;
3120 	if (sc_no_suspend_vtswitch ||
3121 	    sc_susp_scr == sc_console->index) {
3122 		sc_touch_scrn_saver();
3123 		sc_susp_scr = -1;
3124 		return;
3125 	}
3126 	for (retry = 0; retry < 10; retry++) {
3127 		sc_switch_scr(sc_console->sc, sc_console->index);
3128 		if (!sc_console->sc->switch_in_progress)
3129 			break;
3130 		pause("scsuspend", hz);
3131 	}
3132 	suspend_in_progress = TRUE;
3133 }
3134 
3135 static void
3136 scresume(__unused void *arg)
3137 {
3138 
3139 	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3140 	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3141 	KASSERT(sc_console->sc->cur_scp != NULL,
3142 	    ("sc_console->sc->cur_scp != NULL"));
3143 
3144 	suspend_in_progress = FALSE;
3145 	if (sc_susp_scr < 0) {
3146 		update_font(sc_console->sc->cur_scp);
3147 		return;
3148 	}
3149 	sc_switch_scr(sc_console->sc, sc_susp_scr);
3150 }
3151 
3152 int
3153 sc_clean_up(scr_stat *scp)
3154 {
3155 #ifdef DEV_SPLASH
3156     int error;
3157 #endif
3158 
3159     if (scp->sc->flags & SC_SCRN_BLANKED) {
3160 	sc_touch_scrn_saver();
3161 #ifdef DEV_SPLASH
3162 	if ((error = wait_scrn_saver_stop(scp->sc)))
3163 	    return error;
3164 #endif
3165     }
3166     scp->status |= MOUSE_HIDDEN;
3167     sc_remove_mouse_image(scp);
3168     sc_remove_cutmarking(scp);
3169     return 0;
3170 }
3171 
3172 void
3173 sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
3174 {
3175     sc_vtb_t new;
3176     sc_vtb_t old;
3177 
3178     old = scp->vtb;
3179     sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
3180     if (!discard && (old.vtb_flags & VTB_VALID)) {
3181 	/* retain the current cursor position and buffer contants */
3182 	scp->cursor_oldpos = scp->cursor_pos;
3183 	/*
3184 	 * This works only if the old buffer has the same size as or larger
3185 	 * than the new one. XXX
3186 	 */
3187 	sc_vtb_copy(&old, 0, &new, 0, scp->xsize*scp->ysize);
3188 	scp->vtb = new;
3189     } else {
3190 	scp->vtb = new;
3191 	sc_vtb_destroy(&old);
3192     }
3193 
3194 #ifndef SC_NO_SYSMOUSE
3195     /* move the mouse cursor at the center of the screen */
3196     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
3197 #endif
3198 }
3199 
3200 static scr_stat
3201 *alloc_scp(sc_softc_t *sc, int vty)
3202 {
3203     scr_stat *scp;
3204 
3205     /* assert(sc_malloc) */
3206 
3207     scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
3208     init_scp(sc, vty, scp);
3209 
3210     sc_alloc_scr_buffer(scp, TRUE, TRUE);
3211     if (sc_init_emulator(scp, SC_DFLT_TERM))
3212 	sc_init_emulator(scp, "*");
3213 
3214 #ifndef SC_NO_CUTPASTE
3215     sc_alloc_cut_buffer(scp, TRUE);
3216 #endif
3217 
3218 #ifndef SC_NO_HISTORY
3219     sc_alloc_history_buffer(scp, 0, 0, TRUE);
3220 #endif
3221 
3222     return scp;
3223 }
3224 
3225 static void
3226 init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
3227 {
3228     video_info_t info;
3229 
3230     bzero(scp, sizeof(*scp));
3231 
3232     scp->index = vty;
3233     scp->sc = sc;
3234     scp->status = 0;
3235     scp->mode = sc->initial_mode;
3236     vidd_get_info(sc->adp, scp->mode, &info);
3237     if (info.vi_flags & V_INFO_GRAPHICS) {
3238 	scp->status |= GRAPHICS_MODE;
3239 	scp->xpixel = info.vi_width;
3240 	scp->ypixel = info.vi_height;
3241 	scp->xsize = info.vi_width/info.vi_cwidth;
3242 	scp->ysize = info.vi_height/info.vi_cheight;
3243 	scp->font_size = 0;
3244 	scp->font = NULL;
3245     } else {
3246 	scp->xsize = info.vi_width;
3247 	scp->ysize = info.vi_height;
3248 	scp->xpixel = scp->xsize*info.vi_cwidth;
3249 	scp->ypixel = scp->ysize*info.vi_cheight;
3250     }
3251 
3252     scp->font_size = info.vi_cheight;
3253     scp->font_width = info.vi_cwidth;
3254 #ifndef SC_NO_FONT_LOADING
3255     if (info.vi_cheight < 14)
3256 	scp->font = sc->font_8;
3257     else if (info.vi_cheight >= 16)
3258 	scp->font = sc->font_16;
3259     else
3260 	scp->font = sc->font_14;
3261 #else
3262     scp->font = NULL;
3263 #endif
3264 
3265     sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
3266 #ifndef __sparc64__
3267     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
3268 #endif
3269     scp->xoff = scp->yoff = 0;
3270     scp->xpos = scp->ypos = 0;
3271     scp->start = scp->xsize * scp->ysize - 1;
3272     scp->end = 0;
3273     scp->tsw = NULL;
3274     scp->ts = NULL;
3275     scp->rndr = NULL;
3276     scp->border = (SC_NORM_ATTR >> 4) & 0x0f;
3277     scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
3278     scp->mouse_cut_start = scp->xsize*scp->ysize;
3279     scp->mouse_cut_end = -1;
3280     scp->mouse_signal = 0;
3281     scp->mouse_pid = 0;
3282     scp->mouse_proc = NULL;
3283     scp->kbd_mode = K_XLATE;
3284     scp->bell_pitch = bios_value.bell_pitch;
3285     scp->bell_duration = BELL_DURATION;
3286     scp->status |= (bios_value.shift_state & NLKED);
3287     scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
3288     scp->pid = 0;
3289     scp->proc = NULL;
3290     scp->smode.mode = VT_AUTO;
3291     scp->history = NULL;
3292     scp->history_pos = 0;
3293     scp->history_size = 0;
3294 
3295     mtx_init(&scp->scr_lock, "scrlock", NULL, MTX_SPIN);
3296 }
3297 
3298 int
3299 sc_init_emulator(scr_stat *scp, char *name)
3300 {
3301     sc_term_sw_t *sw;
3302     sc_rndr_sw_t *rndr;
3303     void *p;
3304     int error;
3305 
3306     if (name == NULL)	/* if no name is given, use the current emulator */
3307 	sw = scp->tsw;
3308     else		/* ...otherwise find the named emulator */
3309 	sw = sc_term_match(name);
3310     if (sw == NULL)
3311 	return EINVAL;
3312 
3313     rndr = NULL;
3314     if (strcmp(sw->te_renderer, "*") != 0) {
3315 	rndr = sc_render_match(scp, sw->te_renderer,
3316 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3317     }
3318     if (rndr == NULL) {
3319 	rndr = sc_render_match(scp, scp->sc->adp->va_name,
3320 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3321 	if (rndr == NULL)
3322 	    return ENODEV;
3323     }
3324 
3325     if (sw == scp->tsw) {
3326 	error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
3327 	scp->rndr = rndr;
3328 	scp->rndr->init(scp);
3329 	sc_clear_screen(scp);
3330 	/* assert(error == 0); */
3331 	return error;
3332     }
3333 
3334     if (sc_malloc && (sw->te_size > 0))
3335 	p = malloc(sw->te_size, M_DEVBUF, M_NOWAIT);
3336     else
3337 	p = NULL;
3338     error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
3339     if (error)
3340 	return error;
3341 
3342     if (scp->tsw)
3343 	(*scp->tsw->te_term)(scp, &scp->ts);
3344     if (scp->ts != NULL)
3345 	free(scp->ts, M_DEVBUF);
3346     scp->tsw = sw;
3347     scp->ts = p;
3348     scp->rndr = rndr;
3349     scp->rndr->init(scp);
3350 
3351     /* XXX */
3352     (*sw->te_default_attr)(scp, user_default.std_color, user_default.rev_color);
3353     sc_clear_screen(scp);
3354 
3355     return 0;
3356 }
3357 
3358 /*
3359  * scgetc(flags) - get character from keyboard.
3360  * If flags & SCGETC_CN, then avoid harmful side effects.
3361  * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
3362  * return NOKEY if there is nothing there.
3363  */
3364 static u_int
3365 scgetc(sc_softc_t *sc, u_int flags)
3366 {
3367     scr_stat *scp;
3368 #ifndef SC_NO_HISTORY
3369     struct tty *tp;
3370 #endif
3371     u_int c;
3372     int this_scr;
3373     int f;
3374     int i;
3375 
3376     if (sc->kbd == NULL)
3377 	return NOKEY;
3378 
3379 next_code:
3380 #if 1
3381     /* I don't like this, but... XXX */
3382     if (flags & SCGETC_CN)
3383 	sccnupdate(sc->cur_scp);
3384 #endif
3385     scp = sc->cur_scp;
3386     /* first see if there is something in the keyboard port */
3387     for (;;) {
3388 	c = kbdd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
3389 	if (c == ERRKEY) {
3390 	    if (!(flags & SCGETC_CN))
3391 		sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3392 	} else if (c == NOKEY)
3393 	    return c;
3394 	else
3395 	    break;
3396     }
3397 
3398     /* make screensaver happy */
3399     if (!(c & RELKEY))
3400 	sc_touch_scrn_saver();
3401 
3402     if (!(flags & SCGETC_CN))
3403 	random_harvest(&c, sizeof(c), 1, RANDOM_KEYBOARD);
3404 
3405     if (scp->kbd_mode != K_XLATE)
3406 	return KEYCHAR(c);
3407 
3408     /* if scroll-lock pressed allow history browsing */
3409     if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
3410 
3411 	scp->status &= ~CURSOR_ENABLED;
3412 	sc_remove_cursor_image(scp);
3413 
3414 #ifndef SC_NO_HISTORY
3415 	if (!(scp->status & BUFFER_SAVED)) {
3416 	    scp->status |= BUFFER_SAVED;
3417 	    sc_hist_save(scp);
3418 	}
3419 	switch (c) {
3420 	/* FIXME: key codes */
3421 	case SPCLKEY | FKEY | F(49):  /* home key */
3422 	    sc_remove_cutmarking(scp);
3423 	    sc_hist_home(scp);
3424 	    goto next_code;
3425 
3426 	case SPCLKEY | FKEY | F(57):  /* end key */
3427 	    sc_remove_cutmarking(scp);
3428 	    sc_hist_end(scp);
3429 	    goto next_code;
3430 
3431 	case SPCLKEY | FKEY | F(50):  /* up arrow key */
3432 	    sc_remove_cutmarking(scp);
3433 	    if (sc_hist_up_line(scp))
3434 		if (!(flags & SCGETC_CN))
3435 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3436 	    goto next_code;
3437 
3438 	case SPCLKEY | FKEY | F(58):  /* down arrow key */
3439 	    sc_remove_cutmarking(scp);
3440 	    if (sc_hist_down_line(scp))
3441 		if (!(flags & SCGETC_CN))
3442 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3443 	    goto next_code;
3444 
3445 	case SPCLKEY | FKEY | F(51):  /* page up key */
3446 	    sc_remove_cutmarking(scp);
3447 	    for (i=0; i<scp->ysize; i++)
3448 	    if (sc_hist_up_line(scp)) {
3449 		if (!(flags & SCGETC_CN))
3450 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3451 		break;
3452 	    }
3453 	    goto next_code;
3454 
3455 	case SPCLKEY | FKEY | F(59):  /* page down key */
3456 	    sc_remove_cutmarking(scp);
3457 	    for (i=0; i<scp->ysize; i++)
3458 	    if (sc_hist_down_line(scp)) {
3459 		if (!(flags & SCGETC_CN))
3460 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3461 		break;
3462 	    }
3463 	    goto next_code;
3464 	}
3465 #endif /* SC_NO_HISTORY */
3466     }
3467 
3468     /*
3469      * Process and consume special keys here.  Return a plain char code
3470      * or a char code with the META flag or a function key code.
3471      */
3472     if (c & RELKEY) {
3473 	/* key released */
3474 	/* goto next_code */
3475     } else {
3476 	/* key pressed */
3477 	if (c & SPCLKEY) {
3478 	    c &= ~SPCLKEY;
3479 	    switch (KEYCHAR(c)) {
3480 	    /* LOCKING KEYS */
3481 	    case NLK: case CLK: case ALK:
3482 		break;
3483 	    case SLK:
3484 		(void)kbdd_ioctl(sc->kbd, KDGKBSTATE, (caddr_t)&f);
3485 		if (f & SLKED) {
3486 		    scp->status |= SLKED;
3487 		} else {
3488 		    if (scp->status & SLKED) {
3489 			scp->status &= ~SLKED;
3490 #ifndef SC_NO_HISTORY
3491 			if (scp->status & BUFFER_SAVED) {
3492 			    if (!sc_hist_restore(scp))
3493 				sc_remove_cutmarking(scp);
3494 			    scp->status &= ~BUFFER_SAVED;
3495 			    scp->status |= CURSOR_ENABLED;
3496 			    sc_draw_cursor_image(scp);
3497 			}
3498 			tp = SC_DEV(sc, scp->index);
3499 			if (!kdb_active && tty_opened_ns(tp))
3500 			    sctty_outwakeup(tp);
3501 #endif
3502 		    }
3503 		}
3504 		break;
3505 
3506 	    case PASTE:
3507 #ifndef SC_NO_CUTPASTE
3508 		sc_mouse_paste(scp);
3509 #endif
3510 		break;
3511 
3512 	    /* NON-LOCKING KEYS */
3513 	    case NOP:
3514 	    case LSH:  case RSH:  case LCTR: case RCTR:
3515 	    case LALT: case RALT: case ASH:  case META:
3516 		break;
3517 
3518 	    case BTAB:
3519 		if (!(sc->flags & SC_SCRN_BLANKED))
3520 		    return c;
3521 		break;
3522 
3523 	    case SPSC:
3524 #ifdef DEV_SPLASH
3525 		/* force activatation/deactivation of the screen saver */
3526 		if (!(sc->flags & SC_SCRN_BLANKED)) {
3527 		    run_scrn_saver = TRUE;
3528 		    sc->scrn_time_stamp -= scrn_blank_time;
3529 		}
3530 		if (cold) {
3531 		    /*
3532 		     * While devices are being probed, the screen saver need
3533 		     * to be invoked explictly. XXX
3534 		     */
3535 		    if (sc->flags & SC_SCRN_BLANKED) {
3536 			scsplash_stick(FALSE);
3537 			stop_scrn_saver(sc, current_saver);
3538 		    } else {
3539 			if (!ISGRAPHSC(scp)) {
3540 			    scsplash_stick(TRUE);
3541 			    (*current_saver)(sc, TRUE);
3542 			}
3543 		    }
3544 		}
3545 #endif /* DEV_SPLASH */
3546 		break;
3547 
3548 	    case RBT:
3549 #ifndef SC_DISABLE_REBOOT
3550 		if (enable_reboot)
3551 			shutdown_nice(0);
3552 #endif
3553 		break;
3554 
3555 	    case HALT:
3556 #ifndef SC_DISABLE_REBOOT
3557 		if (enable_reboot)
3558 			shutdown_nice(RB_HALT);
3559 #endif
3560 		break;
3561 
3562 	    case PDWN:
3563 #ifndef SC_DISABLE_REBOOT
3564 		if (enable_reboot)
3565 			shutdown_nice(RB_HALT|RB_POWEROFF);
3566 #endif
3567 		break;
3568 
3569 	    case SUSP:
3570 		power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
3571 		break;
3572 	    case STBY:
3573 		power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
3574 		break;
3575 
3576 	    case DBG:
3577 #ifndef SC_DISABLE_KDBKEY
3578 		if (enable_kdbkey)
3579 			kdb_break();
3580 #endif
3581 		break;
3582 
3583 	    case PNC:
3584 		if (enable_panic_key)
3585 			panic("Forced by the panic key");
3586 		break;
3587 
3588 	    case NEXT:
3589 		this_scr = scp->index;
3590 		for (i = (this_scr - sc->first_vty + 1)%sc->vtys;
3591 			sc->first_vty + i != this_scr;
3592 			i = (i + 1)%sc->vtys) {
3593 		    struct tty *tp = SC_DEV(sc, sc->first_vty + i);
3594 		    if (tty_opened_ns(tp)) {
3595 			sc_switch_scr(scp->sc, sc->first_vty + i);
3596 			break;
3597 		    }
3598 		}
3599 		break;
3600 
3601 	    case PREV:
3602 		this_scr = scp->index;
3603 		for (i = (this_scr - sc->first_vty + sc->vtys - 1)%sc->vtys;
3604 			sc->first_vty + i != this_scr;
3605 			i = (i + sc->vtys - 1)%sc->vtys) {
3606 		    struct tty *tp = SC_DEV(sc, sc->first_vty + i);
3607 		    if (tty_opened_ns(tp)) {
3608 			sc_switch_scr(scp->sc, sc->first_vty + i);
3609 			break;
3610 		    }
3611 		}
3612 		break;
3613 
3614 	    default:
3615 		if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
3616 		    sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
3617 		    break;
3618 		}
3619 		/* assert(c & FKEY) */
3620 		if (!(sc->flags & SC_SCRN_BLANKED))
3621 		    return c;
3622 		break;
3623 	    }
3624 	    /* goto next_code */
3625 	} else {
3626 	    /* regular keys (maybe MKEY is set) */
3627 #if !defined(SC_DISABLE_KDBKEY) && defined(KDB)
3628 	    if (enable_kdbkey)
3629 		kdb_alt_break(c, &sc->sc_altbrk);
3630 #endif
3631 	    if (!(sc->flags & SC_SCRN_BLANKED))
3632 		return c;
3633 	}
3634     }
3635 
3636     goto next_code;
3637 }
3638 
3639 static int
3640 sctty_mmap(struct tty *tp, vm_ooffset_t offset, vm_paddr_t *paddr,
3641     int nprot, vm_memattr_t *memattr)
3642 {
3643     scr_stat *scp;
3644 
3645     scp = sc_get_stat(tp);
3646     if (scp != scp->sc->cur_scp)
3647 	return -1;
3648     return vidd_mmap(scp->sc->adp, offset, paddr, nprot, memattr);
3649 }
3650 
3651 static void
3652 update_font(scr_stat *scp)
3653 {
3654 #ifndef SC_NO_FONT_LOADING
3655     /* load appropriate font */
3656     if (!(scp->status & GRAPHICS_MODE)) {
3657 	if (!(scp->status & PIXEL_MODE) && ISFONTAVAIL(scp->sc->adp->va_flags)) {
3658 	    if (scp->font_size < 14) {
3659 		if (scp->sc->fonts_loaded & FONT_8)
3660 		    sc_load_font(scp, 0, 8, 8, scp->sc->font_8, 0, 256);
3661 	    } else if (scp->font_size >= 16) {
3662 		if (scp->sc->fonts_loaded & FONT_16)
3663 		    sc_load_font(scp, 0, 16, 8, scp->sc->font_16, 0, 256);
3664 	    } else {
3665 		if (scp->sc->fonts_loaded & FONT_14)
3666 		    sc_load_font(scp, 0, 14, 8, scp->sc->font_14, 0, 256);
3667 	    }
3668 	    /*
3669 	     * FONT KLUDGE:
3670 	     * This is an interim kludge to display correct font.
3671 	     * Always use the font page #0 on the video plane 2.
3672 	     * Somehow we cannot show the font in other font pages on
3673 	     * some video cards... XXX
3674 	     */
3675 	    sc_show_font(scp, 0);
3676 	}
3677 	mark_all(scp);
3678     }
3679 #endif /* !SC_NO_FONT_LOADING */
3680 }
3681 
3682 static int
3683 save_kbd_state(scr_stat *scp)
3684 {
3685     int state;
3686     int error;
3687 
3688     error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3689     if (error == ENOIOCTL)
3690 	error = ENODEV;
3691     if (error == 0) {
3692 	scp->status &= ~LOCK_MASK;
3693 	scp->status |= state;
3694     }
3695     return error;
3696 }
3697 
3698 static int
3699 update_kbd_state(scr_stat *scp, int new_bits, int mask)
3700 {
3701     int state;
3702     int error;
3703 
3704     if (mask != LOCK_MASK) {
3705 	error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3706 	if (error == ENOIOCTL)
3707 	    error = ENODEV;
3708 	if (error)
3709 	    return error;
3710 	state &= ~mask;
3711 	state |= new_bits & mask;
3712     } else {
3713 	state = new_bits & LOCK_MASK;
3714     }
3715     error = kbdd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
3716     if (error == ENOIOCTL)
3717 	error = ENODEV;
3718     return error;
3719 }
3720 
3721 static int
3722 update_kbd_leds(scr_stat *scp, int which)
3723 {
3724     int error;
3725 
3726     which &= LOCK_MASK;
3727     error = kbdd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
3728     if (error == ENOIOCTL)
3729 	error = ENODEV;
3730     return error;
3731 }
3732 
3733 int
3734 set_mode(scr_stat *scp)
3735 {
3736     video_info_t info;
3737 
3738     /* reject unsupported mode */
3739     if (vidd_get_info(scp->sc->adp, scp->mode, &info))
3740 	return 1;
3741 
3742     /* if this vty is not currently showing, do nothing */
3743     if (scp != scp->sc->cur_scp)
3744 	return 0;
3745 
3746     /* setup video hardware for the given mode */
3747     vidd_set_mode(scp->sc->adp, scp->mode);
3748     scp->rndr->init(scp);
3749 #ifndef __sparc64__
3750     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3751 		(void *)scp->sc->adp->va_window, FALSE);
3752 #endif
3753 
3754     update_font(scp);
3755 
3756     sc_set_border(scp, scp->border);
3757     sc_set_cursor_image(scp);
3758 
3759     return 0;
3760 }
3761 
3762 void
3763 sc_set_border(scr_stat *scp, int color)
3764 {
3765     SC_VIDEO_LOCK(scp->sc);
3766     (*scp->rndr->draw_border)(scp, color);
3767     SC_VIDEO_UNLOCK(scp->sc);
3768 }
3769 
3770 #ifndef SC_NO_FONT_LOADING
3771 void
3772 sc_load_font(scr_stat *scp, int page, int size, int width, u_char *buf,
3773 	     int base, int count)
3774 {
3775     sc_softc_t *sc;
3776 
3777     sc = scp->sc;
3778     sc->font_loading_in_progress = TRUE;
3779     vidd_load_font(sc->adp, page, size, width, buf, base, count);
3780     sc->font_loading_in_progress = FALSE;
3781 }
3782 
3783 void
3784 sc_save_font(scr_stat *scp, int page, int size, int width, u_char *buf,
3785 	     int base, int count)
3786 {
3787     sc_softc_t *sc;
3788 
3789     sc = scp->sc;
3790     sc->font_loading_in_progress = TRUE;
3791     vidd_save_font(sc->adp, page, size, width, buf, base, count);
3792     sc->font_loading_in_progress = FALSE;
3793 }
3794 
3795 void
3796 sc_show_font(scr_stat *scp, int page)
3797 {
3798     vidd_show_font(scp->sc->adp, page);
3799 }
3800 #endif /* !SC_NO_FONT_LOADING */
3801 
3802 void
3803 sc_paste(scr_stat *scp, const u_char *p, int count)
3804 {
3805     struct tty *tp;
3806     u_char *rmap;
3807 
3808     tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
3809     if (!tty_opened_ns(tp))
3810 	return;
3811     rmap = scp->sc->scr_rmap;
3812     for (; count > 0; --count)
3813 	ttydisc_rint(tp, rmap[*p++], 0);
3814     ttydisc_rint_done(tp);
3815 }
3816 
3817 void
3818 sc_respond(scr_stat *scp, const u_char *p, int count, int wakeup)
3819 {
3820     struct tty *tp;
3821 
3822     tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
3823     if (!tty_opened_ns(tp))
3824 	return;
3825     ttydisc_rint_simple(tp, p, count);
3826     if (wakeup) {
3827 	/* XXX: we can't always call ttydisc_rint_done() here! */
3828 	ttydisc_rint_done(tp);
3829     }
3830 }
3831 
3832 void
3833 sc_bell(scr_stat *scp, int pitch, int duration)
3834 {
3835     if (cold || shutdown_in_progress || !enable_bell)
3836 	return;
3837 
3838     if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
3839 	return;
3840 
3841     if (scp->sc->flags & SC_VISUAL_BELL) {
3842 	if (scp->sc->blink_in_progress)
3843 	    return;
3844 	scp->sc->blink_in_progress = 3;
3845 	if (scp != scp->sc->cur_scp)
3846 	    scp->sc->blink_in_progress += 2;
3847 	blink_screen(scp->sc->cur_scp);
3848     } else if (duration != 0 && pitch != 0) {
3849 	if (scp != scp->sc->cur_scp)
3850 	    pitch *= 2;
3851 	sysbeep(1193182 / pitch, duration);
3852     }
3853 }
3854 
3855 static void
3856 blink_screen(void *arg)
3857 {
3858     scr_stat *scp = arg;
3859     struct tty *tp;
3860 
3861     if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
3862 	scp->sc->blink_in_progress = 0;
3863     	mark_all(scp);
3864 	tp = SC_DEV(scp->sc, scp->index);
3865 	if (tty_opened_ns(tp))
3866 	    sctty_outwakeup(tp);
3867 	if (scp->sc->delayed_next_scr)
3868 	    sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
3869     }
3870     else {
3871 	(*scp->rndr->draw)(scp, 0, scp->xsize*scp->ysize,
3872 			   scp->sc->blink_in_progress & 1);
3873 	scp->sc->blink_in_progress--;
3874 	callout_reset_sbt(&scp->sc->cblink, SBT_1S / 15, 0,
3875 	    blink_screen, scp, C_PREL(0));
3876     }
3877 }
3878 
3879 /*
3880  * Until sc_attach_unit() gets called no dev structures will be available
3881  * to store the per-screen current status.  This is the case when the
3882  * kernel is initially booting and needs access to its console.  During
3883  * this early phase of booting the console's current status is kept in
3884  * one statically defined scr_stat structure, and any pointers to the
3885  * dev structures will be NULL.
3886  */
3887 
3888 static scr_stat *
3889 sc_get_stat(struct tty *tp)
3890 {
3891 	if (tp == NULL)
3892 		return (&main_console);
3893 	return (SC_STAT(tp));
3894 }
3895 
3896 /*
3897  * Allocate active keyboard. Try to allocate "kbdmux" keyboard first, and,
3898  * if found, add all non-busy keyboards to "kbdmux". Otherwise look for
3899  * any keyboard.
3900  */
3901 
3902 static int
3903 sc_allocate_keyboard(sc_softc_t *sc, int unit)
3904 {
3905 	int		 idx0, idx;
3906 	keyboard_t	*k0, *k;
3907 	keyboard_info_t	 ki;
3908 
3909 	idx0 = kbd_allocate("kbdmux", -1, (void *)&sc->keyboard, sckbdevent, sc);
3910 	if (idx0 != -1) {
3911 		k0 = kbd_get_keyboard(idx0);
3912 
3913 		for (idx = kbd_find_keyboard2("*", -1, 0);
3914 		     idx != -1;
3915 		     idx = kbd_find_keyboard2("*", -1, idx + 1)) {
3916 			k = kbd_get_keyboard(idx);
3917 
3918 			if (idx == idx0 || KBD_IS_BUSY(k))
3919 				continue;
3920 
3921 			bzero(&ki, sizeof(ki));
3922 			strcpy(ki.kb_name, k->kb_name);
3923 			ki.kb_unit = k->kb_unit;
3924 
3925 			(void)kbdd_ioctl(k0, KBADDKBD, (caddr_t) &ki);
3926 		}
3927 	} else
3928 		idx0 = kbd_allocate("*", unit, (void *)&sc->keyboard, sckbdevent, sc);
3929 
3930 	return (idx0);
3931 }
3932