xref: /freebsd/sys/dev/syscons/syscons.c (revision b5864e6de2f3aa8eb9bb269ec86282598b5201b1)
1 /*-
2  * Copyright (c) 1992-1998 Søren Schmidt
3  * All rights reserved.
4  *
5  * This code is derived from software contributed to The DragonFly Project
6  * by Sascha Wildner <saw@online.de>
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer,
13  *    without modification, immediately at the beginning of the file.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. The name of the author may not be used to endorse or promote products
18  *    derived from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 
35 #include "opt_compat.h"
36 #include "opt_syscons.h"
37 #include "opt_splash.h"
38 #include "opt_ddb.h"
39 
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/bus.h>
43 #include <sys/conf.h>
44 #include <sys/cons.h>
45 #include <sys/consio.h>
46 #include <sys/kdb.h>
47 #include <sys/eventhandler.h>
48 #include <sys/fbio.h>
49 #include <sys/kbio.h>
50 #include <sys/kernel.h>
51 #include <sys/lock.h>
52 #include <sys/malloc.h>
53 #include <sys/mutex.h>
54 #include <sys/priv.h>
55 #include <sys/proc.h>
56 #include <sys/random.h>
57 #include <sys/reboot.h>
58 #include <sys/serial.h>
59 #include <sys/signalvar.h>
60 #include <sys/sysctl.h>
61 #include <sys/tty.h>
62 #include <sys/power.h>
63 
64 #include <machine/clock.h>
65 #if defined(__arm__) || defined(__mips__) || \
66 	defined(__powerpc__) || defined(__sparc64__)
67 #include <machine/sc_machdep.h>
68 #else
69 #include <machine/pc/display.h>
70 #endif
71 #if defined( __i386__) || defined(__amd64__)
72 #include <machine/psl.h>
73 #include <machine/frame.h>
74 #endif
75 #include <machine/stdarg.h>
76 
77 #include <dev/kbd/kbdreg.h>
78 #include <dev/fb/fbreg.h>
79 #include <dev/fb/splashreg.h>
80 #include <dev/syscons/syscons.h>
81 
82 #define COLD 0
83 #define WARM 1
84 
85 #define DEFAULT_BLANKTIME	(5*60)		/* 5 minutes */
86 #define MAX_BLANKTIME		(7*24*60*60)	/* 7 days!? */
87 
88 #define KEYCODE_BS		0x0e		/* "<-- Backspace" key, XXX */
89 
90 /* NULL-safe version of "tty_opened()" */
91 #define	tty_opened_ns(tp)	((tp) != NULL && tty_opened(tp))
92 
93 typedef struct default_attr {
94 	int		std_color;		/* normal hardware color */
95 	int		rev_color;		/* reverse hardware color */
96 } default_attr;
97 
98 static default_attr user_default = {
99     SC_NORM_ATTR,
100     SC_NORM_REV_ATTR,
101 };
102 
103 static	int		sc_console_unit = -1;
104 static	int		sc_saver_keyb_only = 1;
105 static  scr_stat    	*sc_console;
106 static  struct consdev	*sc_consptr;
107 static	scr_stat	main_console;
108 static	struct tty 	*main_devs[MAXCONS];
109 
110 static  char        	init_done = COLD;
111 static	int		shutdown_in_progress = FALSE;
112 static	int		suspend_in_progress = FALSE;
113 static	char		sc_malloc = FALSE;
114 
115 static	int		saver_mode = CONS_NO_SAVER; /* LKM/user saver */
116 static	int		run_scrn_saver = FALSE;	/* should run the saver? */
117 static	int		enable_bell = TRUE; /* enable beeper */
118 
119 #ifndef SC_DISABLE_REBOOT
120 static  int		enable_reboot = TRUE; /* enable keyboard reboot */
121 #endif
122 
123 #ifndef SC_DISABLE_KDBKEY
124 static  int		enable_kdbkey = TRUE; /* enable keyboard debug */
125 #endif
126 
127 static	long        	scrn_blank_time = 0;    /* screen saver timeout value */
128 #ifdef DEV_SPLASH
129 static	int     	scrn_blanked;		/* # of blanked screen */
130 static	int		sticky_splash = FALSE;
131 
132 static	void		none_saver(sc_softc_t *sc, int blank) { }
133 static	void		(*current_saver)(sc_softc_t *, int) = none_saver;
134 #endif
135 
136 #ifdef SC_NO_SUSPEND_VTYSWITCH
137 static	int		sc_no_suspend_vtswitch = 1;
138 #else
139 static	int		sc_no_suspend_vtswitch = 0;
140 #endif
141 static	int		sc_susp_scr;
142 
143 static SYSCTL_NODE(_hw, OID_AUTO, syscons, CTLFLAG_RD, 0, "syscons");
144 static SYSCTL_NODE(_hw_syscons, OID_AUTO, saver, CTLFLAG_RD, 0, "saver");
145 SYSCTL_INT(_hw_syscons_saver, OID_AUTO, keybonly, CTLFLAG_RW,
146     &sc_saver_keyb_only, 0, "screen saver interrupted by input only");
147 SYSCTL_INT(_hw_syscons, OID_AUTO, bell, CTLFLAG_RW, &enable_bell,
148     0, "enable bell");
149 #ifndef SC_DISABLE_REBOOT
150 SYSCTL_INT(_hw_syscons, OID_AUTO, kbd_reboot, CTLFLAG_RW|CTLFLAG_SECURE, &enable_reboot,
151     0, "enable keyboard reboot");
152 #endif
153 #ifndef SC_DISABLE_KDBKEY
154 SYSCTL_INT(_hw_syscons, OID_AUTO, kbd_debug, CTLFLAG_RW|CTLFLAG_SECURE, &enable_kdbkey,
155     0, "enable keyboard debug");
156 #endif
157 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RWTUN,
158     &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
159 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
160 #include "font.h"
161 #endif
162 
163 	tsw_ioctl_t	*sc_user_ioctl;
164 
165 static	bios_values_t	bios_value;
166 
167 static	int		enable_panic_key;
168 SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
169 	   0, "Enable panic via keypress specified in kbdmap(5)");
170 
171 #define SC_CONSOLECTL	255
172 
173 #define VTY_WCHAN(sc, vty) (&SC_DEV(sc, vty))
174 
175 /* prototypes */
176 static int sc_allocate_keyboard(sc_softc_t *sc, int unit);
177 static int scvidprobe(int unit, int flags, int cons);
178 static int sckbdprobe(int unit, int flags, int cons);
179 static void scmeminit(void *arg);
180 static int scdevtounit(struct tty *tp);
181 static kbd_callback_func_t sckbdevent;
182 static void scinit(int unit, int flags);
183 static scr_stat *sc_get_stat(struct tty *tp);
184 static void scterm(int unit, int flags);
185 static void scshutdown(void *, int);
186 static void scsuspend(void *);
187 static void scresume(void *);
188 static u_int scgetc(sc_softc_t *sc, u_int flags, struct sc_cnstate *sp);
189 static void sc_puts(scr_stat *scp, u_char *buf, int len, int kernel);
190 #define SCGETC_CN	1
191 #define SCGETC_NONBLOCK	2
192 static void sccnupdate(scr_stat *scp);
193 static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
194 static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
195 static timeout_t scrn_timer;
196 static int and_region(int *s1, int *e1, int s2, int e2);
197 static void scrn_update(scr_stat *scp, int show_cursor);
198 
199 #ifdef DEV_SPLASH
200 static int scsplash_callback(int event, void *arg);
201 static void scsplash_saver(sc_softc_t *sc, int show);
202 static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
203 static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
204 static int set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border);
205 static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
206 static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
207 static int wait_scrn_saver_stop(sc_softc_t *sc);
208 #define scsplash_stick(stick)		(sticky_splash = (stick))
209 #else /* !DEV_SPLASH */
210 #define scsplash_stick(stick)
211 #endif /* DEV_SPLASH */
212 
213 static int do_switch_scr(sc_softc_t *sc, int s);
214 static int vt_proc_alive(scr_stat *scp);
215 static int signal_vt_rel(scr_stat *scp);
216 static int signal_vt_acq(scr_stat *scp);
217 static int finish_vt_rel(scr_stat *scp, int release, int *s);
218 static int finish_vt_acq(scr_stat *scp);
219 static void exchange_scr(sc_softc_t *sc);
220 static void update_cursor_image(scr_stat *scp);
221 static void change_cursor_shape(scr_stat *scp, int flags, int base, int height);
222 static void update_font(scr_stat *);
223 static int save_kbd_state(scr_stat *scp);
224 static int update_kbd_state(scr_stat *scp, int state, int mask);
225 static int update_kbd_leds(scr_stat *scp, int which);
226 static timeout_t blink_screen;
227 static struct tty *sc_alloc_tty(int, int);
228 
229 static cn_probe_t	sc_cnprobe;
230 static cn_init_t	sc_cninit;
231 static cn_term_t	sc_cnterm;
232 static cn_getc_t	sc_cngetc;
233 static cn_putc_t	sc_cnputc;
234 static cn_grab_t	sc_cngrab;
235 static cn_ungrab_t	sc_cnungrab;
236 
237 CONSOLE_DRIVER(sc);
238 
239 static	tsw_open_t	sctty_open;
240 static	tsw_close_t	sctty_close;
241 static	tsw_outwakeup_t	sctty_outwakeup;
242 static	tsw_ioctl_t	sctty_ioctl;
243 static	tsw_mmap_t	sctty_mmap;
244 
245 static struct ttydevsw sc_ttydevsw = {
246 	.tsw_open	= sctty_open,
247 	.tsw_close	= sctty_close,
248 	.tsw_outwakeup	= sctty_outwakeup,
249 	.tsw_ioctl	= sctty_ioctl,
250 	.tsw_mmap	= sctty_mmap,
251 };
252 
253 static d_ioctl_t	consolectl_ioctl;
254 static d_close_t	consolectl_close;
255 
256 static struct cdevsw consolectl_devsw = {
257 	.d_version	= D_VERSION,
258 	.d_flags	= D_NEEDGIANT | D_TRACKCLOSE,
259 	.d_ioctl	= consolectl_ioctl,
260 	.d_close	= consolectl_close,
261 	.d_name		= "consolectl",
262 };
263 
264 int
265 sc_probe_unit(int unit, int flags)
266 {
267     if (!vty_enabled(VTY_SC))
268         return ENXIO;
269     if (!scvidprobe(unit, flags, FALSE)) {
270 	if (bootverbose)
271 	    printf("%s%d: no video adapter found.\n", SC_DRIVER_NAME, unit);
272 	return ENXIO;
273     }
274 
275     /* syscons will be attached even when there is no keyboard */
276     sckbdprobe(unit, flags, FALSE);
277 
278     return 0;
279 }
280 
281 /* probe video adapters, return TRUE if found */
282 static int
283 scvidprobe(int unit, int flags, int cons)
284 {
285     /*
286      * Access the video adapter driver through the back door!
287      * Video adapter drivers need to be configured before syscons.
288      * However, when syscons is being probed as the low-level console,
289      * they have not been initialized yet.  We force them to initialize
290      * themselves here. XXX
291      */
292     vid_configure(cons ? VIO_PROBE_ONLY : 0);
293 
294     return (vid_find_adapter("*", unit) >= 0);
295 }
296 
297 /* probe the keyboard, return TRUE if found */
298 static int
299 sckbdprobe(int unit, int flags, int cons)
300 {
301     /* access the keyboard driver through the backdoor! */
302     kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
303 
304     return (kbd_find_keyboard("*", unit) >= 0);
305 }
306 
307 static char
308 *adapter_name(video_adapter_t *adp)
309 {
310     static struct {
311 	int type;
312 	char *name[2];
313     } names[] = {
314 	{ KD_MONO,	{ "MDA",	"MDA" } },
315 	{ KD_HERCULES,	{ "Hercules",	"Hercules" } },
316 	{ KD_CGA,	{ "CGA",	"CGA" } },
317 	{ KD_EGA,	{ "EGA",	"EGA (mono)" } },
318 	{ KD_VGA,	{ "VGA",	"VGA (mono)" } },
319 	{ KD_PC98,	{ "PC-98x1",	"PC-98x1" } },
320 	{ KD_TGA,	{ "TGA",	"TGA" } },
321 	{ -1,		{ "Unknown",	"Unknown" } },
322     };
323     int i;
324 
325     for (i = 0; names[i].type != -1; ++i)
326 	if (names[i].type == adp->va_type)
327 	    break;
328     return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
329 }
330 
331 static void
332 sctty_outwakeup(struct tty *tp)
333 {
334     size_t len;
335     u_char buf[PCBURST];
336     scr_stat *scp = sc_get_stat(tp);
337 
338     if (scp->status & SLKED ||
339 	(scp == scp->sc->cur_scp && scp->sc->blink_in_progress))
340 	return;
341 
342     for (;;) {
343 	len = ttydisc_getc(tp, buf, sizeof buf);
344 	if (len == 0)
345 	    break;
346 	SC_VIDEO_LOCK(scp->sc);
347 	sc_puts(scp, buf, len, 0);
348 	SC_VIDEO_UNLOCK(scp->sc);
349     }
350 }
351 
352 static struct tty *
353 sc_alloc_tty(int index, int devnum)
354 {
355 	struct sc_ttysoftc *stc;
356 	struct tty *tp;
357 
358 	/* Allocate TTY object and softc to store unit number. */
359 	stc = malloc(sizeof(struct sc_ttysoftc), M_DEVBUF, M_WAITOK);
360 	stc->st_index = index;
361 	stc->st_stat = NULL;
362 	tp = tty_alloc_mutex(&sc_ttydevsw, stc, &Giant);
363 
364 	/* Create device node. */
365 	tty_makedev(tp, NULL, "v%r", devnum);
366 
367 	return (tp);
368 }
369 
370 #ifdef SC_PIXEL_MODE
371 static void
372 sc_set_vesa_mode(scr_stat *scp, sc_softc_t *sc, int unit)
373 {
374 	video_info_t info;
375 	u_char *font;
376 	int depth;
377 	int fontsize;
378 	int i;
379 	int vmode;
380 
381 	vmode = 0;
382 	(void)resource_int_value("sc", unit, "vesa_mode", &vmode);
383 	if (vmode < M_VESA_BASE || vmode > M_VESA_MODE_MAX ||
384 	    vidd_get_info(sc->adp, vmode, &info) != 0 ||
385 	    !sc_support_pixel_mode(&info))
386 		vmode = 0;
387 
388 	/*
389 	 * If the mode is unset or unsupported, search for an available
390 	 * 800x600 graphics mode with the highest color depth.
391 	 */
392 	if (vmode == 0) {
393 		for (depth = 0, i = M_VESA_BASE; i <= M_VESA_MODE_MAX; i++)
394 			if (vidd_get_info(sc->adp, i, &info) == 0 &&
395 			    info.vi_width == 800 && info.vi_height == 600 &&
396 			    sc_support_pixel_mode(&info) &&
397 			    info.vi_depth > depth) {
398 				vmode = i;
399 				depth = info.vi_depth;
400 			}
401 		if (vmode == 0)
402 			return;
403 		vidd_get_info(sc->adp, vmode, &info);
404 	}
405 
406 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
407 	fontsize = info.vi_cheight;
408 #else
409 	fontsize = scp->font_size;
410 #endif
411 	if (fontsize < 14)
412 		fontsize = 8;
413 	else if (fontsize >= 16)
414 		fontsize = 16;
415 	else
416 		fontsize = 14;
417 #ifndef SC_NO_FONT_LOADING
418 	switch (fontsize) {
419 	case 8:
420 		if ((sc->fonts_loaded & FONT_8) == 0)
421 			return;
422 		font = sc->font_8;
423 		break;
424 	case 14:
425 		if ((sc->fonts_loaded & FONT_14) == 0)
426 			return;
427 		font = sc->font_14;
428 		break;
429 	case 16:
430 		if ((sc->fonts_loaded & FONT_16) == 0)
431 			return;
432 		font = sc->font_16;
433 		break;
434 	}
435 #else
436 	font = NULL;
437 #endif
438 #ifdef DEV_SPLASH
439 	if ((sc->flags & SC_SPLASH_SCRN) != 0)
440 		splash_term(sc->adp);
441 #endif
442 #ifndef SC_NO_HISTORY
443 	if (scp->history != NULL) {
444 		sc_vtb_append(&scp->vtb, 0, scp->history,
445 		    scp->ypos * scp->xsize + scp->xpos);
446 		scp->history_pos = sc_vtb_tail(scp->history);
447 	}
448 #endif
449 	vidd_set_mode(sc->adp, vmode);
450 	scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
451 	scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
452 	scp->xpixel = info.vi_width;
453 	scp->ypixel = info.vi_height;
454 	scp->xsize = scp->xpixel / 8;
455 	scp->ysize = scp->ypixel / fontsize;
456 	scp->xpos = 0;
457 	scp->ypos = scp->ysize - 1;
458 	scp->xoff = scp->yoff = 0;
459 	scp->font = font;
460 	scp->font_size = fontsize;
461 	scp->font_width = 8;
462 	scp->start = scp->xsize * scp->ysize - 1;
463 	scp->end = 0;
464 	scp->cursor_pos = scp->cursor_oldpos = scp->xsize * scp->xsize;
465 	scp->mode = sc->initial_mode = vmode;
466 #ifndef __sparc64__
467 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
468 	    (void *)sc->adp->va_window, FALSE);
469 #endif
470 	sc_alloc_scr_buffer(scp, FALSE, FALSE);
471 	sc_init_emulator(scp, NULL);
472 #ifndef SC_NO_CUTPASTE
473 	sc_alloc_cut_buffer(scp, FALSE);
474 #endif
475 #ifndef SC_NO_HISTORY
476 	sc_alloc_history_buffer(scp, 0, 0, FALSE);
477 #endif
478 	sc_set_border(scp, scp->border);
479 	sc_set_cursor_image(scp);
480 	scp->status &= ~UNKNOWN_MODE;
481 #ifdef DEV_SPLASH
482 	if ((sc->flags & SC_SPLASH_SCRN) != 0)
483 		splash_init(sc->adp, scsplash_callback, sc);
484 #endif
485 }
486 #endif
487 
488 int
489 sc_attach_unit(int unit, int flags)
490 {
491     sc_softc_t *sc;
492     scr_stat *scp;
493     struct cdev *dev;
494     int vc;
495 
496     if (!vty_enabled(VTY_SC))
497         return ENXIO;
498 
499     flags &= ~SC_KERNEL_CONSOLE;
500 
501     if (sc_console_unit == unit) {
502 	/*
503 	 * If this unit is being used as the system console, we need to
504 	 * adjust some variables and buffers before and after scinit().
505 	 */
506 	/* assert(sc_console != NULL) */
507 	flags |= SC_KERNEL_CONSOLE;
508 	scmeminit(NULL);
509     }
510     scinit(unit, flags);
511 
512     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
513     sc->config = flags;
514     callout_init(&sc->ctimeout, 0);
515     callout_init(&sc->cblink, 0);
516     scp = sc_get_stat(sc->dev[0]);
517     if (sc_console == NULL)	/* sc_console_unit < 0 */
518 	sc_console = scp;
519 
520 #ifdef SC_PIXEL_MODE
521     if ((sc->config & SC_VESAMODE) != 0)
522 	sc_set_vesa_mode(scp, sc, unit);
523 #endif /* SC_PIXEL_MODE */
524 
525     /* initialize cursor */
526     if (!ISGRAPHSC(scp))
527     	update_cursor_image(scp);
528 
529     /* get screen update going */
530     scrn_timer(sc);
531 
532     /* set up the keyboard */
533     (void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
534     update_kbd_state(scp, scp->status, LOCK_MASK);
535 
536     printf("%s%d: %s <%d virtual consoles, flags=0x%x>\n",
537 	   SC_DRIVER_NAME, unit, adapter_name(sc->adp), sc->vtys, sc->config);
538     if (bootverbose) {
539 	printf("%s%d:", SC_DRIVER_NAME, unit);
540     	if (sc->adapter >= 0)
541 	    printf(" fb%d", sc->adapter);
542 	if (sc->keyboard >= 0)
543 	    printf(", kbd%d", sc->keyboard);
544 	if (scp->tsw)
545 	    printf(", terminal emulator: %s (%s)",
546 		   scp->tsw->te_name, scp->tsw->te_desc);
547 	printf("\n");
548     }
549 
550     /* Register suspend/resume/shutdown callbacks for the kernel console. */
551     if (sc_console_unit == unit) {
552 	EVENTHANDLER_REGISTER(power_suspend_early, scsuspend, NULL,
553 			      EVENTHANDLER_PRI_ANY);
554 	EVENTHANDLER_REGISTER(power_resume, scresume, NULL,
555 			      EVENTHANDLER_PRI_ANY);
556 	EVENTHANDLER_REGISTER(shutdown_pre_sync, scshutdown, NULL,
557 			      SHUTDOWN_PRI_DEFAULT);
558     }
559 
560     for (vc = 0; vc < sc->vtys; vc++) {
561 	if (sc->dev[vc] == NULL) {
562 		sc->dev[vc] = sc_alloc_tty(vc, vc + unit * MAXCONS);
563 		if (vc == 0 && sc->dev == main_devs)
564 			SC_STAT(sc->dev[0]) = &main_console;
565 	}
566 	/*
567 	 * The first vty already has struct tty and scr_stat initialized
568 	 * in scinit().  The other vtys will have these structs when
569 	 * first opened.
570 	 */
571     }
572 
573     dev = make_dev(&consolectl_devsw, 0, UID_ROOT, GID_WHEEL, 0600,
574         "consolectl");
575     dev->si_drv1 = sc->dev[0];
576 
577     return 0;
578 }
579 
580 static void
581 scmeminit(void *arg)
582 {
583     if (!vty_enabled(VTY_SC))
584         return;
585     if (sc_malloc)
586 	return;
587     sc_malloc = TRUE;
588 
589     /*
590      * As soon as malloc() becomes functional, we had better allocate
591      * various buffers for the kernel console.
592      */
593 
594     if (sc_console_unit < 0)	/* sc_console == NULL */
595 	return;
596 
597     /* copy the temporary buffer to the final buffer */
598     sc_alloc_scr_buffer(sc_console, FALSE, FALSE);
599 
600 #ifndef SC_NO_CUTPASTE
601     sc_alloc_cut_buffer(sc_console, FALSE);
602 #endif
603 
604 #ifndef SC_NO_HISTORY
605     /* initialize history buffer & pointers */
606     sc_alloc_history_buffer(sc_console, 0, 0, FALSE);
607 #endif
608 }
609 
610 /* XXX */
611 SYSINIT(sc_mem, SI_SUB_KMEM, SI_ORDER_ANY, scmeminit, NULL);
612 
613 static int
614 scdevtounit(struct tty *tp)
615 {
616     int vty = SC_VTY(tp);
617 
618     if (vty == SC_CONSOLECTL)
619 	return ((sc_console != NULL) ? sc_console->sc->unit : -1);
620     else if ((vty < 0) || (vty >= MAXCONS*sc_max_unit()))
621 	return -1;
622     else
623 	return vty/MAXCONS;
624 }
625 
626 static int
627 sctty_open(struct tty *tp)
628 {
629     int unit = scdevtounit(tp);
630     sc_softc_t *sc;
631     scr_stat *scp;
632 #ifndef __sparc64__
633     keyarg_t key;
634 #endif
635 
636     DPRINTF(5, ("scopen: dev:%s, unit:%d, vty:%d\n",
637 		devtoname(tp->t_dev), unit, SC_VTY(tp)));
638 
639     sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
640     if (sc == NULL)
641 	return ENXIO;
642 
643     if (!tty_opened(tp)) {
644         /* Use the current setting of the <-- key as default VERASE. */
645         /* If the Delete key is preferable, an stty is necessary     */
646 #ifndef __sparc64__
647 	if (sc->kbd != NULL) {
648 	    key.keynum = KEYCODE_BS;
649 	    (void)kbdd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
650             tp->t_termios.c_cc[VERASE] = key.key.map[0];
651 	}
652 #endif
653     }
654 
655     scp = sc_get_stat(tp);
656     if (scp == NULL) {
657 	scp = SC_STAT(tp) = alloc_scp(sc, SC_VTY(tp));
658 	if (ISGRAPHSC(scp))
659 	    sc_set_pixel_mode(scp, NULL, 0, 0, 16, 8);
660     }
661     if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
662 	tp->t_winsize.ws_col = scp->xsize;
663 	tp->t_winsize.ws_row = scp->ysize;
664     }
665 
666     return (0);
667 }
668 
669 static void
670 sctty_close(struct tty *tp)
671 {
672     scr_stat *scp;
673     int s;
674 
675     if (SC_VTY(tp) != SC_CONSOLECTL) {
676 	scp = sc_get_stat(tp);
677 	/* were we in the middle of the VT switching process? */
678 	DPRINTF(5, ("sc%d: scclose(), ", scp->sc->unit));
679 	s = spltty();
680 	if ((scp == scp->sc->cur_scp) && (scp->sc->unit == sc_console_unit))
681 	    cnavailable(sc_consptr, TRUE);
682 	if (finish_vt_rel(scp, TRUE, &s) == 0)	/* force release */
683 	    DPRINTF(5, ("reset WAIT_REL, "));
684 	if (finish_vt_acq(scp) == 0)		/* force acknowledge */
685 	    DPRINTF(5, ("reset WAIT_ACQ, "));
686 #ifdef not_yet_done
687 	if (scp == &main_console) {
688 	    scp->pid = 0;
689 	    scp->proc = NULL;
690 	    scp->smode.mode = VT_AUTO;
691 	}
692 	else {
693 	    sc_vtb_destroy(&scp->vtb);
694 #ifndef __sparc64__
695 	    sc_vtb_destroy(&scp->scr);
696 #endif
697 	    sc_free_history_buffer(scp, scp->ysize);
698 	    SC_STAT(tp) = NULL;
699 	    free(scp, M_DEVBUF);
700 	}
701 #else
702 	scp->pid = 0;
703 	scp->proc = NULL;
704 	scp->smode.mode = VT_AUTO;
705 #endif
706 	scp->kbd_mode = K_XLATE;
707 	if (scp == scp->sc->cur_scp)
708 	    (void)kbdd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
709 	DPRINTF(5, ("done.\n"));
710     }
711 }
712 
713 #if 0 /* XXX mpsafetty: fix screensaver. What about outwakeup? */
714 static int
715 scread(struct cdev *dev, struct uio *uio, int flag)
716 {
717     if (!sc_saver_keyb_only)
718 	sc_touch_scrn_saver();
719     return ttyread(dev, uio, flag);
720 }
721 #endif
722 
723 static int
724 sckbdevent(keyboard_t *thiskbd, int event, void *arg)
725 {
726     sc_softc_t *sc;
727     struct tty *cur_tty;
728     int c, error = 0;
729     size_t len;
730     const u_char *cp;
731 
732     sc = (sc_softc_t *)arg;
733     /* assert(thiskbd == sc->kbd) */
734 
735     mtx_lock(&Giant);
736 
737     switch (event) {
738     case KBDIO_KEYINPUT:
739 	break;
740     case KBDIO_UNLOADING:
741 	sc->kbd = NULL;
742 	sc->keyboard = -1;
743 	kbd_release(thiskbd, (void *)&sc->keyboard);
744 	goto done;
745     default:
746 	error = EINVAL;
747 	goto done;
748     }
749 
750     /*
751      * Loop while there is still input to get from the keyboard.
752      * I don't think this is nessesary, and it doesn't fix
753      * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
754      */
755     while ((c = scgetc(sc, SCGETC_NONBLOCK, NULL)) != NOKEY) {
756 
757 	cur_tty = SC_DEV(sc, sc->cur_scp->index);
758 	if (!tty_opened_ns(cur_tty))
759 	    continue;
760 
761 	if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
762 	    continue;
763 
764 	switch (KEYFLAGS(c)) {
765 	case 0x0000: /* normal key */
766 	    ttydisc_rint(cur_tty, KEYCHAR(c), 0);
767 	    break;
768 	case FKEY:  /* function key, return string */
769 	    cp = (*sc->cur_scp->tsw->te_fkeystr)(sc->cur_scp, c);
770 	    if (cp != NULL) {
771 	    	ttydisc_rint_simple(cur_tty, cp, strlen(cp));
772 		break;
773 	    }
774 	    cp = kbdd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
775 	    if (cp != NULL)
776 	    	ttydisc_rint_simple(cur_tty, cp, len);
777 	    break;
778 	case MKEY:  /* meta is active, prepend ESC */
779 	    ttydisc_rint(cur_tty, 0x1b, 0);
780 	    ttydisc_rint(cur_tty, KEYCHAR(c), 0);
781 	    break;
782 	case BKEY:  /* backtab fixed sequence (esc [ Z) */
783 	    ttydisc_rint_simple(cur_tty, "\x1B[Z", 3);
784 	    break;
785 	}
786 
787 	ttydisc_rint_done(cur_tty);
788     }
789 
790     sc->cur_scp->status |= MOUSE_HIDDEN;
791 
792 done:
793     mtx_unlock(&Giant);
794     return (error);
795 }
796 
797 static int
798 sctty_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
799 {
800     int error;
801     int i;
802     sc_softc_t *sc;
803     scr_stat *scp;
804     int s;
805 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
806     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
807     int ival;
808 #endif
809 
810     /* If there is a user_ioctl function call that first */
811     if (sc_user_ioctl) {
812 	error = (*sc_user_ioctl)(tp, cmd, data, td);
813 	if (error != ENOIOCTL)
814 	    return error;
815     }
816 
817     error = sc_vid_ioctl(tp, cmd, data, td);
818     if (error != ENOIOCTL)
819 	return error;
820 
821 #ifndef SC_NO_HISTORY
822     error = sc_hist_ioctl(tp, cmd, data, td);
823     if (error != ENOIOCTL)
824 	return error;
825 #endif
826 
827 #ifndef SC_NO_SYSMOUSE
828     error = sc_mouse_ioctl(tp, cmd, data, td);
829     if (error != ENOIOCTL)
830 	return error;
831 #endif
832 
833     scp = sc_get_stat(tp);
834     /* assert(scp != NULL) */
835     /* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
836     sc = scp->sc;
837 
838     if (scp->tsw) {
839 	error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, td);
840 	if (error != ENOIOCTL)
841 	    return error;
842     }
843 
844     switch (cmd) {  		/* process console hardware related ioctl's */
845 
846     case GIO_ATTR:      	/* get current attributes */
847 	/* this ioctl is not processed here, but in the terminal emulator */
848 	return ENOTTY;
849 
850     case GIO_COLOR:     	/* is this a color console ? */
851 	*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
852 	return 0;
853 
854     case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
855 	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
856             return EINVAL;
857 	s = spltty();
858 	scrn_blank_time = *(int *)data;
859 	run_scrn_saver = (scrn_blank_time != 0);
860 	splx(s);
861 	return 0;
862 
863     case CONS_CURSORTYPE:   	/* set cursor type (obsolete) */
864 	s = spltty();
865 	*(int *)data &= CONS_CURSOR_ATTRS;
866 	sc_change_cursor_shape(scp, *(int *)data, -1, -1);
867 	splx(s);
868 	return 0;
869 
870     case CONS_GETCURSORSHAPE:   /* get cursor shape (new interface) */
871 	if (((int *)data)[0] & CONS_LOCAL_CURSOR) {
872 	    ((int *)data)[0] = scp->curr_curs_attr.flags;
873 	    ((int *)data)[1] = scp->curr_curs_attr.base;
874 	    ((int *)data)[2] = scp->curr_curs_attr.height;
875 	} else {
876 	    ((int *)data)[0] = sc->curs_attr.flags;
877 	    ((int *)data)[1] = sc->curs_attr.base;
878 	    ((int *)data)[2] = sc->curs_attr.height;
879 	}
880 	return 0;
881 
882     case CONS_SETCURSORSHAPE:   /* set cursor shape (new interface) */
883 	s = spltty();
884 	sc_change_cursor_shape(scp, ((int *)data)[0],
885 	    ((int *)data)[1], ((int *)data)[2]);
886 	splx(s);
887 	return 0;
888 
889     case CONS_BELLTYPE: 	/* set bell type sound/visual */
890 	if ((*(int *)data) & CONS_VISUAL_BELL)
891 	    sc->flags |= SC_VISUAL_BELL;
892 	else
893 	    sc->flags &= ~SC_VISUAL_BELL;
894 	if ((*(int *)data) & CONS_QUIET_BELL)
895 	    sc->flags |= SC_QUIET_BELL;
896 	else
897 	    sc->flags &= ~SC_QUIET_BELL;
898 	return 0;
899 
900     case CONS_GETINFO:  	/* get current (virtual) console info */
901     {
902 	vid_info_t *ptr = (vid_info_t*)data;
903 	if (ptr->size == sizeof(struct vid_info)) {
904 	    ptr->m_num = sc->cur_scp->index;
905 	    ptr->font_size = scp->font_size;
906 	    ptr->mv_col = scp->xpos;
907 	    ptr->mv_row = scp->ypos;
908 	    ptr->mv_csz = scp->xsize;
909 	    ptr->mv_rsz = scp->ysize;
910 	    ptr->mv_hsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
911 	    /*
912 	     * The following fields are filled by the terminal emulator. XXX
913 	     *
914 	     * ptr->mv_norm.fore
915 	     * ptr->mv_norm.back
916 	     * ptr->mv_rev.fore
917 	     * ptr->mv_rev.back
918 	     */
919 	    ptr->mv_grfc.fore = 0;      /* not supported */
920 	    ptr->mv_grfc.back = 0;      /* not supported */
921 	    ptr->mv_ovscan = scp->border;
922 	    if (scp == sc->cur_scp)
923 		save_kbd_state(scp);
924 	    ptr->mk_keylock = scp->status & LOCK_MASK;
925 	    return 0;
926 	}
927 	return EINVAL;
928     }
929 
930     case CONS_GETVERS:  	/* get version number */
931 	*(int*)data = 0x200;    /* version 2.0 */
932 	return 0;
933 
934     case CONS_IDLE:		/* see if the screen has been idle */
935 	/*
936 	 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
937 	 * the user process may have been writing something on the
938 	 * screen and syscons is not aware of it. Declare the screen
939 	 * is NOT idle if it is in one of these modes. But there is
940 	 * an exception to it; if a screen saver is running in the
941 	 * graphics mode in the current screen, we should say that the
942 	 * screen has been idle.
943 	 */
944 	*(int *)data = (sc->flags & SC_SCRN_IDLE)
945 		       && (!ISGRAPHSC(sc->cur_scp)
946 			   || (sc->cur_scp->status & SAVER_RUNNING));
947 	return 0;
948 
949     case CONS_SAVERMODE:	/* set saver mode */
950 	switch(*(int *)data) {
951 	case CONS_NO_SAVER:
952 	case CONS_USR_SAVER:
953 	    /* if a LKM screen saver is running, stop it first. */
954 	    scsplash_stick(FALSE);
955 	    saver_mode = *(int *)data;
956 	    s = spltty();
957 #ifdef DEV_SPLASH
958 	    if ((error = wait_scrn_saver_stop(NULL))) {
959 		splx(s);
960 		return error;
961 	    }
962 #endif
963 	    run_scrn_saver = TRUE;
964 	    if (saver_mode == CONS_USR_SAVER)
965 		scp->status |= SAVER_RUNNING;
966 	    else
967 		scp->status &= ~SAVER_RUNNING;
968 	    scsplash_stick(TRUE);
969 	    splx(s);
970 	    break;
971 	case CONS_LKM_SAVER:
972 	    s = spltty();
973 	    if ((saver_mode == CONS_USR_SAVER) && (scp->status & SAVER_RUNNING))
974 		scp->status &= ~SAVER_RUNNING;
975 	    saver_mode = *(int *)data;
976 	    splx(s);
977 	    break;
978 	default:
979 	    return EINVAL;
980 	}
981 	return 0;
982 
983     case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
984 	/*
985 	 * Note that this ioctl does not guarantee the screen saver
986 	 * actually starts or stops. It merely attempts to do so...
987 	 */
988 	s = spltty();
989 	run_scrn_saver = (*(int *)data != 0);
990 	if (run_scrn_saver)
991 	    sc->scrn_time_stamp -= scrn_blank_time;
992 	splx(s);
993 	return 0;
994 
995     case CONS_SCRSHOT:		/* get a screen shot */
996     {
997 	int retval, hist_rsz;
998 	size_t lsize, csize;
999 	vm_offset_t frbp, hstp;
1000 	unsigned lnum;
1001 	scrshot_t *ptr = (scrshot_t *)data;
1002 	void *outp = ptr->buf;
1003 
1004 	if (ptr->x < 0 || ptr->y < 0 || ptr->xsize < 0 || ptr->ysize < 0)
1005 		return EINVAL;
1006 	s = spltty();
1007 	if (ISGRAPHSC(scp)) {
1008 	    splx(s);
1009 	    return EOPNOTSUPP;
1010 	}
1011 	hist_rsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
1012 	if (((u_int)ptr->x + ptr->xsize) > scp->xsize ||
1013 	    ((u_int)ptr->y + ptr->ysize) > (scp->ysize + hist_rsz)) {
1014 	    splx(s);
1015 	    return EINVAL;
1016 	}
1017 
1018 	lsize = scp->xsize * sizeof(u_int16_t);
1019 	csize = ptr->xsize * sizeof(u_int16_t);
1020 	/* Pointer to the last line of framebuffer */
1021 	frbp = scp->vtb.vtb_buffer + scp->ysize * lsize + ptr->x *
1022 	       sizeof(u_int16_t);
1023 	/* Pointer to the last line of target buffer */
1024 	outp = (char *)outp + ptr->ysize * csize;
1025 	/* Pointer to the last line of history buffer */
1026 	if (scp->history != NULL)
1027 	    hstp = scp->history->vtb_buffer + sc_vtb_tail(scp->history) *
1028 		sizeof(u_int16_t) + ptr->x * sizeof(u_int16_t);
1029 	else
1030 	    hstp = 0;
1031 
1032 	retval = 0;
1033 	for (lnum = 0; lnum < (ptr->y + ptr->ysize); lnum++) {
1034 	    if (lnum < scp->ysize) {
1035 		frbp -= lsize;
1036 	    } else {
1037 		hstp -= lsize;
1038 		if (hstp < scp->history->vtb_buffer)
1039 		    hstp += scp->history->vtb_rows * lsize;
1040 		frbp = hstp;
1041 	    }
1042 	    if (lnum < ptr->y)
1043 		continue;
1044 	    outp = (char *)outp - csize;
1045 	    retval = copyout((void *)frbp, outp, csize);
1046 	    if (retval != 0)
1047 		break;
1048 	}
1049 	splx(s);
1050 	return retval;
1051     }
1052 
1053     case VT_SETMODE:    	/* set screen switcher mode */
1054     {
1055 	struct vt_mode *mode;
1056 	struct proc *p1;
1057 
1058 	mode = (struct vt_mode *)data;
1059 	DPRINTF(5, ("%s%d: VT_SETMODE ", SC_DRIVER_NAME, sc->unit));
1060 	if (scp->smode.mode == VT_PROCESS) {
1061 	    p1 = pfind(scp->pid);
1062     	    if (scp->proc == p1 && scp->proc != td->td_proc) {
1063 		if (p1)
1064 		    PROC_UNLOCK(p1);
1065 		DPRINTF(5, ("error EPERM\n"));
1066 		return EPERM;
1067 	    }
1068 	    if (p1)
1069 		PROC_UNLOCK(p1);
1070 	}
1071 	s = spltty();
1072 	if (mode->mode == VT_AUTO) {
1073 	    scp->smode.mode = VT_AUTO;
1074 	    scp->proc = NULL;
1075 	    scp->pid = 0;
1076 	    DPRINTF(5, ("VT_AUTO, "));
1077 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
1078 		cnavailable(sc_consptr, TRUE);
1079 	    /* were we in the middle of the vty switching process? */
1080 	    if (finish_vt_rel(scp, TRUE, &s) == 0)
1081 		DPRINTF(5, ("reset WAIT_REL, "));
1082 	    if (finish_vt_acq(scp) == 0)
1083 		DPRINTF(5, ("reset WAIT_ACQ, "));
1084 	} else {
1085 	    if (!ISSIGVALID(mode->relsig) || !ISSIGVALID(mode->acqsig)
1086 		|| !ISSIGVALID(mode->frsig)) {
1087 		splx(s);
1088 		DPRINTF(5, ("error EINVAL\n"));
1089 		return EINVAL;
1090 	    }
1091 	    DPRINTF(5, ("VT_PROCESS %d, ", td->td_proc->p_pid));
1092 	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
1093 	    scp->proc = td->td_proc;
1094 	    scp->pid = scp->proc->p_pid;
1095 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
1096 		cnavailable(sc_consptr, FALSE);
1097 	}
1098 	splx(s);
1099 	DPRINTF(5, ("\n"));
1100 	return 0;
1101     }
1102 
1103     case VT_GETMODE:    	/* get screen switcher mode */
1104 	bcopy(&scp->smode, data, sizeof(struct vt_mode));
1105 	return 0;
1106 
1107 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1108     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1109     case _IO('v', 4):
1110 	ival = IOCPARM_IVAL(data);
1111 	data = (caddr_t)&ival;
1112 	/* FALLTHROUGH */
1113 #endif
1114     case VT_RELDISP:    	/* screen switcher ioctl */
1115 	s = spltty();
1116 	/*
1117 	 * This must be the current vty which is in the VT_PROCESS
1118 	 * switching mode...
1119 	 */
1120 	if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
1121 	    splx(s);
1122 	    return EINVAL;
1123 	}
1124 	/* ...and this process is controlling it. */
1125 	if (scp->proc != td->td_proc) {
1126 	    splx(s);
1127 	    return EPERM;
1128 	}
1129 	error = EINVAL;
1130 	switch(*(int *)data) {
1131 	case VT_FALSE:  	/* user refuses to release screen, abort */
1132 	    if ((error = finish_vt_rel(scp, FALSE, &s)) == 0)
1133 		DPRINTF(5, ("%s%d: VT_FALSE\n", SC_DRIVER_NAME, sc->unit));
1134 	    break;
1135 	case VT_TRUE:   	/* user has released screen, go on */
1136 	    if ((error = finish_vt_rel(scp, TRUE, &s)) == 0)
1137 		DPRINTF(5, ("%s%d: VT_TRUE\n", SC_DRIVER_NAME, sc->unit));
1138 	    break;
1139 	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
1140 	    if ((error = finish_vt_acq(scp)) == 0)
1141 		DPRINTF(5, ("%s%d: VT_ACKACQ\n", SC_DRIVER_NAME, sc->unit));
1142 	    break;
1143 	default:
1144 	    break;
1145 	}
1146 	splx(s);
1147 	return error;
1148 
1149     case VT_OPENQRY:    	/* return free virtual console */
1150 	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
1151 	    tp = SC_DEV(sc, i);
1152 	    if (!tty_opened_ns(tp)) {
1153 		*(int *)data = i + 1;
1154 		return 0;
1155 	    }
1156 	}
1157 	return EINVAL;
1158 
1159 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1160     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1161     case _IO('v', 5):
1162 	ival = IOCPARM_IVAL(data);
1163 	data = (caddr_t)&ival;
1164 	/* FALLTHROUGH */
1165 #endif
1166     case VT_ACTIVATE:   	/* switch to screen *data */
1167 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1168 	s = spltty();
1169 	error = sc_clean_up(sc->cur_scp);
1170 	splx(s);
1171 	if (error)
1172 	    return error;
1173 	error = sc_switch_scr(sc, i);
1174 	return (error);
1175 
1176 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1177     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1178     case _IO('v', 6):
1179 	ival = IOCPARM_IVAL(data);
1180 	data = (caddr_t)&ival;
1181 	/* FALLTHROUGH */
1182 #endif
1183     case VT_WAITACTIVE: 	/* wait for switch to occur */
1184 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1185 	if ((i < sc->first_vty) || (i >= sc->first_vty + sc->vtys))
1186 	    return EINVAL;
1187 	if (i == sc->cur_scp->index)
1188 	    return 0;
1189 	error = tsleep(VTY_WCHAN(sc, i), (PZERO + 1) | PCATCH, "waitvt", 0);
1190 	return error;
1191 
1192     case VT_GETACTIVE:		/* get active vty # */
1193 	*(int *)data = sc->cur_scp->index + 1;
1194 	return 0;
1195 
1196     case VT_GETINDEX:		/* get this vty # */
1197 	*(int *)data = scp->index + 1;
1198 	return 0;
1199 
1200     case VT_LOCKSWITCH:		/* prevent vty switching */
1201 	if ((*(int *)data) & 0x01)
1202 	    sc->flags |= SC_SCRN_VTYLOCK;
1203 	else
1204 	    sc->flags &= ~SC_SCRN_VTYLOCK;
1205 	return 0;
1206 
1207     case KDENABIO:      	/* allow io operations */
1208 	error = priv_check(td, PRIV_IO);
1209 	if (error != 0)
1210 	    return error;
1211 	error = securelevel_gt(td->td_ucred, 0);
1212 	if (error != 0)
1213 		return error;
1214 #ifdef __i386__
1215 	td->td_frame->tf_eflags |= PSL_IOPL;
1216 #elif defined(__amd64__)
1217 	td->td_frame->tf_rflags |= PSL_IOPL;
1218 #endif
1219 	return 0;
1220 
1221     case KDDISABIO:     	/* disallow io operations (default) */
1222 #ifdef __i386__
1223 	td->td_frame->tf_eflags &= ~PSL_IOPL;
1224 #elif defined(__amd64__)
1225 	td->td_frame->tf_rflags &= ~PSL_IOPL;
1226 #endif
1227 	return 0;
1228 
1229 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1230     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1231     case _IO('K', 20):
1232 	ival = IOCPARM_IVAL(data);
1233 	data = (caddr_t)&ival;
1234 	/* FALLTHROUGH */
1235 #endif
1236     case KDSKBSTATE:    	/* set keyboard state (locks) */
1237 	if (*(int *)data & ~LOCK_MASK)
1238 	    return EINVAL;
1239 	scp->status &= ~LOCK_MASK;
1240 	scp->status |= *(int *)data;
1241 	if (scp == sc->cur_scp)
1242 	    update_kbd_state(scp, scp->status, LOCK_MASK);
1243 	return 0;
1244 
1245     case KDGKBSTATE:    	/* get keyboard state (locks) */
1246 	if (scp == sc->cur_scp)
1247 	    save_kbd_state(scp);
1248 	*(int *)data = scp->status & LOCK_MASK;
1249 	return 0;
1250 
1251     case KDGETREPEAT:      	/* get keyboard repeat & delay rates */
1252     case KDSETREPEAT:      	/* set keyboard repeat & delay rates (new) */
1253 	error = kbdd_ioctl(sc->kbd, cmd, data);
1254 	if (error == ENOIOCTL)
1255 	    error = ENODEV;
1256 	return error;
1257 
1258 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1259     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1260     case _IO('K', 67):
1261 	ival = IOCPARM_IVAL(data);
1262 	data = (caddr_t)&ival;
1263 	/* FALLTHROUGH */
1264 #endif
1265     case KDSETRAD:      	/* set keyboard repeat & delay rates (old) */
1266 	if (*(int *)data & ~0x7f)
1267 	    return EINVAL;
1268 	error = kbdd_ioctl(sc->kbd, KDSETRAD, data);
1269 	if (error == ENOIOCTL)
1270 	    error = ENODEV;
1271 	return error;
1272 
1273 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1274     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1275     case _IO('K', 7):
1276 	ival = IOCPARM_IVAL(data);
1277 	data = (caddr_t)&ival;
1278 	/* FALLTHROUGH */
1279 #endif
1280     case KDSKBMODE:     	/* set keyboard mode */
1281 	switch (*(int *)data) {
1282 	case K_XLATE:   	/* switch to XLT ascii mode */
1283 	case K_RAW: 		/* switch to RAW scancode mode */
1284 	case K_CODE: 		/* switch to CODE mode */
1285 	    scp->kbd_mode = *(int *)data;
1286 	    if (scp == sc->cur_scp)
1287 		(void)kbdd_ioctl(sc->kbd, KDSKBMODE, data);
1288 	    return 0;
1289 	default:
1290 	    return EINVAL;
1291 	}
1292 	/* NOT REACHED */
1293 
1294     case KDGKBMODE:     	/* get keyboard mode */
1295 	*(int *)data = scp->kbd_mode;
1296 	return 0;
1297 
1298     case KDGKBINFO:
1299 	error = kbdd_ioctl(sc->kbd, cmd, data);
1300 	if (error == ENOIOCTL)
1301 	    error = ENODEV;
1302 	return error;
1303 
1304 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1305     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1306     case _IO('K', 8):
1307 	ival = IOCPARM_IVAL(data);
1308 	data = (caddr_t)&ival;
1309 	/* FALLTHROUGH */
1310 #endif
1311     case KDMKTONE:      	/* sound the bell */
1312 	if (*(int*)data)
1313 	    sc_bell(scp, (*(int*)data)&0xffff,
1314 		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1315 	else
1316 	    sc_bell(scp, scp->bell_pitch, scp->bell_duration);
1317 	return 0;
1318 
1319 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1320     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1321     case _IO('K', 63):
1322 	ival = IOCPARM_IVAL(data);
1323 	data = (caddr_t)&ival;
1324 	/* FALLTHROUGH */
1325 #endif
1326     case KIOCSOUND:     	/* make tone (*data) hz */
1327 	if (scp == sc->cur_scp) {
1328 	    if (*(int *)data)
1329 		return sc_tone(*(int *)data);
1330 	    else
1331 		return sc_tone(0);
1332 	}
1333 	return 0;
1334 
1335     case KDGKBTYPE:     	/* get keyboard type */
1336 	error = kbdd_ioctl(sc->kbd, cmd, data);
1337 	if (error == ENOIOCTL) {
1338 	    /* always return something? XXX */
1339 	    *(int *)data = 0;
1340 	}
1341 	return 0;
1342 
1343 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1344     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1345     case _IO('K', 66):
1346 	ival = IOCPARM_IVAL(data);
1347 	data = (caddr_t)&ival;
1348 	/* FALLTHROUGH */
1349 #endif
1350     case KDSETLED:      	/* set keyboard LED status */
1351 	if (*(int *)data & ~LED_MASK)	/* FIXME: LOCK_MASK? */
1352 	    return EINVAL;
1353 	scp->status &= ~LED_MASK;
1354 	scp->status |= *(int *)data;
1355 	if (scp == sc->cur_scp)
1356 	    update_kbd_leds(scp, scp->status);
1357 	return 0;
1358 
1359     case KDGETLED:      	/* get keyboard LED status */
1360 	if (scp == sc->cur_scp)
1361 	    save_kbd_state(scp);
1362 	*(int *)data = scp->status & LED_MASK;
1363 	return 0;
1364 
1365     case KBADDKBD:		/* add/remove keyboard to/from mux */
1366     case KBRELKBD:
1367 	error = kbdd_ioctl(sc->kbd, cmd, data);
1368 	if (error == ENOIOCTL)
1369 	    error = ENODEV;
1370 	return error;
1371 
1372 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1373     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1374     case _IO('c', 110):
1375 	ival = IOCPARM_IVAL(data);
1376 	data = (caddr_t)&ival;
1377 	/* FALLTHROUGH */
1378 #endif
1379     case CONS_SETKBD: 		/* set the new keyboard */
1380 	{
1381 	    keyboard_t *newkbd;
1382 
1383 	    s = spltty();
1384 	    newkbd = kbd_get_keyboard(*(int *)data);
1385 	    if (newkbd == NULL) {
1386 		splx(s);
1387 		return EINVAL;
1388 	    }
1389 	    error = 0;
1390 	    if (sc->kbd != newkbd) {
1391 		i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
1392 				 (void *)&sc->keyboard, sckbdevent, sc);
1393 		/* i == newkbd->kb_index */
1394 		if (i >= 0) {
1395 		    if (sc->kbd != NULL) {
1396 			save_kbd_state(sc->cur_scp);
1397 			kbd_release(sc->kbd, (void *)&sc->keyboard);
1398 		    }
1399 		    sc->kbd = kbd_get_keyboard(i); /* sc->kbd == newkbd */
1400 		    sc->keyboard = i;
1401 		    (void)kbdd_ioctl(sc->kbd, KDSKBMODE,
1402 			      (caddr_t)&sc->cur_scp->kbd_mode);
1403 		    update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1404 				     LOCK_MASK);
1405 		} else {
1406 		    error = EPERM;	/* XXX */
1407 		}
1408 	    }
1409 	    splx(s);
1410 	    return error;
1411 	}
1412 
1413     case CONS_RELKBD: 		/* release the current keyboard */
1414 	s = spltty();
1415 	error = 0;
1416 	if (sc->kbd != NULL) {
1417 	    save_kbd_state(sc->cur_scp);
1418 	    error = kbd_release(sc->kbd, (void *)&sc->keyboard);
1419 	    if (error == 0) {
1420 		sc->kbd = NULL;
1421 		sc->keyboard = -1;
1422 	    }
1423 	}
1424 	splx(s);
1425 	return error;
1426 
1427     case CONS_GETTERM:		/* get the current terminal emulator info */
1428 	{
1429 	    sc_term_sw_t *sw;
1430 
1431 	    if (((term_info_t *)data)->ti_index == 0) {
1432 		sw = scp->tsw;
1433 	    } else {
1434 		sw = sc_term_match_by_number(((term_info_t *)data)->ti_index);
1435 	    }
1436 	    if (sw != NULL) {
1437 		strncpy(((term_info_t *)data)->ti_name, sw->te_name,
1438 			sizeof(((term_info_t *)data)->ti_name));
1439 		strncpy(((term_info_t *)data)->ti_desc, sw->te_desc,
1440 			sizeof(((term_info_t *)data)->ti_desc));
1441 		((term_info_t *)data)->ti_flags = 0;
1442 		return 0;
1443 	    } else {
1444 		((term_info_t *)data)->ti_name[0] = '\0';
1445 		((term_info_t *)data)->ti_desc[0] = '\0';
1446 		((term_info_t *)data)->ti_flags = 0;
1447 		return EINVAL;
1448 	    }
1449 	}
1450 
1451     case CONS_SETTERM:		/* set the current terminal emulator */
1452 	s = spltty();
1453 	error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
1454 	/* FIXME: what if scp == sc_console! XXX */
1455 	splx(s);
1456 	return error;
1457 
1458     case GIO_SCRNMAP:   	/* get output translation table */
1459 	bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
1460 	return 0;
1461 
1462     case PIO_SCRNMAP:   	/* set output translation table */
1463 	bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
1464 	for (i=0; i<sizeof(sc->scr_map); i++) {
1465 	    sc->scr_rmap[sc->scr_map[i]] = i;
1466 	}
1467 	return 0;
1468 
1469     case GIO_KEYMAP:		/* get keyboard translation table */
1470     case PIO_KEYMAP:		/* set keyboard translation table */
1471     case OGIO_KEYMAP:		/* get keyboard translation table (compat) */
1472     case OPIO_KEYMAP:		/* set keyboard translation table (compat) */
1473     case GIO_DEADKEYMAP:	/* get accent key translation table */
1474     case PIO_DEADKEYMAP:	/* set accent key translation table */
1475     case GETFKEY:		/* get function key string */
1476     case SETFKEY:		/* set function key string */
1477 	error = kbdd_ioctl(sc->kbd, cmd, data);
1478 	if (error == ENOIOCTL)
1479 	    error = ENODEV;
1480 	return error;
1481 
1482 #ifndef SC_NO_FONT_LOADING
1483 
1484     case PIO_FONT8x8:   	/* set 8x8 dot font */
1485 	if (!ISFONTAVAIL(sc->adp->va_flags))
1486 	    return ENXIO;
1487 	bcopy(data, sc->font_8, 8*256);
1488 	sc->fonts_loaded |= FONT_8;
1489 	/*
1490 	 * FONT KLUDGE
1491 	 * Always use the font page #0. XXX
1492 	 * Don't load if the current font size is not 8x8.
1493 	 */
1494 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
1495 	    sc_load_font(sc->cur_scp, 0, 8, 8, sc->font_8, 0, 256);
1496 	return 0;
1497 
1498     case GIO_FONT8x8:   	/* get 8x8 dot font */
1499 	if (!ISFONTAVAIL(sc->adp->va_flags))
1500 	    return ENXIO;
1501 	if (sc->fonts_loaded & FONT_8) {
1502 	    bcopy(sc->font_8, data, 8*256);
1503 	    return 0;
1504 	}
1505 	else
1506 	    return ENXIO;
1507 
1508     case PIO_FONT8x14:  	/* set 8x14 dot font */
1509 	if (!ISFONTAVAIL(sc->adp->va_flags))
1510 	    return ENXIO;
1511 	bcopy(data, sc->font_14, 14*256);
1512 	sc->fonts_loaded |= FONT_14;
1513 	/*
1514 	 * FONT KLUDGE
1515 	 * Always use the font page #0. XXX
1516 	 * Don't load if the current font size is not 8x14.
1517 	 */
1518 	if (ISTEXTSC(sc->cur_scp)
1519 	    && (sc->cur_scp->font_size >= 14)
1520 	    && (sc->cur_scp->font_size < 16))
1521 	    sc_load_font(sc->cur_scp, 0, 14, 8, sc->font_14, 0, 256);
1522 	return 0;
1523 
1524     case GIO_FONT8x14:  	/* get 8x14 dot font */
1525 	if (!ISFONTAVAIL(sc->adp->va_flags))
1526 	    return ENXIO;
1527 	if (sc->fonts_loaded & FONT_14) {
1528 	    bcopy(sc->font_14, data, 14*256);
1529 	    return 0;
1530 	}
1531 	else
1532 	    return ENXIO;
1533 
1534     case PIO_FONT8x16:  	/* set 8x16 dot font */
1535 	if (!ISFONTAVAIL(sc->adp->va_flags))
1536 	    return ENXIO;
1537 	bcopy(data, sc->font_16, 16*256);
1538 	sc->fonts_loaded |= FONT_16;
1539 	/*
1540 	 * FONT KLUDGE
1541 	 * Always use the font page #0. XXX
1542 	 * Don't load if the current font size is not 8x16.
1543 	 */
1544 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
1545 	    sc_load_font(sc->cur_scp, 0, 16, 8, sc->font_16, 0, 256);
1546 	return 0;
1547 
1548     case GIO_FONT8x16:  	/* get 8x16 dot font */
1549 	if (!ISFONTAVAIL(sc->adp->va_flags))
1550 	    return ENXIO;
1551 	if (sc->fonts_loaded & FONT_16) {
1552 	    bcopy(sc->font_16, data, 16*256);
1553 	    return 0;
1554 	}
1555 	else
1556 	    return ENXIO;
1557 
1558 #endif /* SC_NO_FONT_LOADING */
1559 
1560     default:
1561 	break;
1562     }
1563 
1564     return (ENOIOCTL);
1565 }
1566 
1567 static int
1568 consolectl_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
1569     struct thread *td)
1570 {
1571 
1572 	return sctty_ioctl(dev->si_drv1, cmd, data, td);
1573 }
1574 
1575 static int
1576 consolectl_close(struct cdev *dev, int flags, int mode, struct thread *td)
1577 {
1578 #ifndef SC_NO_SYSMOUSE
1579 	mouse_info_t info;
1580 	memset(&info, 0, sizeof(info));
1581 	info.operation = MOUSE_ACTION;
1582 
1583 	/*
1584 	 * Make sure all buttons are released when moused and other
1585 	 * console daemons exit, so that no buttons are left pressed.
1586 	 */
1587 	(void) sctty_ioctl(dev->si_drv1, CONS_MOUSECTL, (caddr_t)&info, td);
1588 #endif
1589 	return (0);
1590 }
1591 
1592 static void
1593 sc_cnprobe(struct consdev *cp)
1594 {
1595     int unit;
1596     int flags;
1597 
1598     if (!vty_enabled(VTY_SC)) {
1599 	cp->cn_pri = CN_DEAD;
1600 	return;
1601     }
1602 
1603     cp->cn_pri = sc_get_cons_priority(&unit, &flags);
1604 
1605     /* a video card is always required */
1606     if (!scvidprobe(unit, flags, TRUE))
1607 	cp->cn_pri = CN_DEAD;
1608 
1609     /* syscons will become console even when there is no keyboard */
1610     sckbdprobe(unit, flags, TRUE);
1611 
1612     if (cp->cn_pri == CN_DEAD)
1613 	return;
1614 
1615     /* initialize required fields */
1616     strcpy(cp->cn_name, "ttyv0");
1617 }
1618 
1619 static void
1620 sc_cninit(struct consdev *cp)
1621 {
1622     int unit;
1623     int flags;
1624 
1625     sc_get_cons_priority(&unit, &flags);
1626     scinit(unit, flags | SC_KERNEL_CONSOLE);
1627     sc_console_unit = unit;
1628     sc_console = sc_get_stat(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1629     sc_consptr = cp;
1630 }
1631 
1632 static void
1633 sc_cnterm(struct consdev *cp)
1634 {
1635     /* we are not the kernel console any more, release everything */
1636 
1637     if (sc_console_unit < 0)
1638 	return;			/* shouldn't happen */
1639 
1640 #if 0 /* XXX */
1641     sc_clear_screen(sc_console);
1642     sccnupdate(sc_console);
1643 #endif
1644 
1645     scterm(sc_console_unit, SC_KERNEL_CONSOLE);
1646     sc_console_unit = -1;
1647     sc_console = NULL;
1648 }
1649 
1650 static void sccnclose(sc_softc_t *sc, struct sc_cnstate *sp);
1651 static void sccnopen(sc_softc_t *sc, struct sc_cnstate *sp, int flags);
1652 
1653 static void
1654 sccnopen(sc_softc_t *sc, struct sc_cnstate *sp, int flags)
1655 {
1656     int kbd_mode;
1657 
1658     /* assert(sc_console_unit >= 0) */
1659 
1660     sp->kbd_opened = FALSE;
1661     sp->scr_opened = FALSE;
1662 
1663     /* Opening the keyboard is optional. */
1664     if (!(flags & 1) || sc->kbd == NULL)
1665 	goto over_keyboard;
1666 
1667     /*
1668      * Make sure the keyboard is accessible even when the kbd device
1669      * driver is disabled.
1670      */
1671     kbdd_enable(sc->kbd);
1672 
1673     /* Switch the keyboard to console mode (K_XLATE, polled) on all scp's. */
1674     kbd_mode = K_XLATE;
1675     (void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&kbd_mode);
1676     sc->kbd_open_level++;
1677     kbdd_poll(sc->kbd, TRUE);
1678 
1679     sp->kbd_opened = TRUE;
1680 over_keyboard: ;
1681 
1682     /* The screen is opened iff locking it succeeds. */
1683     sp->scr_opened = TRUE;
1684 
1685     /* The screen switch is optional. */
1686     if (!(flags & 2))
1687 	return;
1688 
1689     /* try to switch to the kernel console screen */
1690     if (!cold &&
1691 	sc->cur_scp->index != sc_console->index &&
1692 	sc->cur_scp->smode.mode == VT_AUTO &&
1693 	sc_console->smode.mode == VT_AUTO)
1694 	    sc_switch_scr(sc, sc_console->index);
1695 }
1696 
1697 static void
1698 sccnclose(sc_softc_t *sc, struct sc_cnstate *sp)
1699 {
1700     sp->scr_opened = FALSE;
1701 
1702     if (!sp->kbd_opened)
1703 	return;
1704 
1705     /* Restore keyboard mode (for the current, possibly-changed scp). */
1706     kbdd_poll(sc->kbd, FALSE);
1707     if (--sc->kbd_open_level == 0)
1708 	(void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&sc->cur_scp->kbd_mode);
1709 
1710     kbdd_disable(sc->kbd);
1711     sp->kbd_opened = FALSE;
1712 }
1713 
1714 /*
1715  * Grabbing switches the screen and keyboard focus to sc_console and the
1716  * keyboard mode to (K_XLATE, polled).  Only switching to polled mode is
1717  * essential (for preventing the interrupt handler from eating input
1718  * between polls).  Focus is part of the UI, and the other switches are
1719  * work just was well when they are done on every entry and exit.
1720  *
1721  * Screen switches while grabbed are supported, and to maintain focus for
1722  * this ungrabbing and closing only restore the polling state and then
1723  * the keyboard mode if on the original screen.
1724  */
1725 
1726 static void
1727 sc_cngrab(struct consdev *cp)
1728 {
1729     sc_softc_t *sc;
1730     int lev;
1731 
1732     sc = sc_console->sc;
1733     lev = atomic_fetchadd_int(&sc->grab_level, 1);
1734     if (lev >= 0 && lev < 2)
1735 	sccnopen(sc, &sc->grab_state[lev], 1 | 2);
1736 }
1737 
1738 static void
1739 sc_cnungrab(struct consdev *cp)
1740 {
1741     sc_softc_t *sc;
1742     int lev;
1743 
1744     sc = sc_console->sc;
1745     lev = atomic_load_acq_int(&sc->grab_level) - 1;
1746     if (lev >= 0 && lev < 2)
1747 	sccnclose(sc, &sc->grab_state[lev]);
1748     atomic_add_int(&sc->grab_level, -1);
1749 }
1750 
1751 static void
1752 sc_cnputc(struct consdev *cd, int c)
1753 {
1754     u_char buf[1];
1755     scr_stat *scp = sc_console;
1756 #ifndef SC_NO_HISTORY
1757 #if 0
1758     struct tty *tp;
1759 #endif
1760 #endif /* !SC_NO_HISTORY */
1761     int s;
1762 
1763     /* assert(sc_console != NULL) */
1764 
1765     SC_VIDEO_LOCK(scp->sc);
1766 
1767 #ifndef SC_NO_HISTORY
1768     if (scp == scp->sc->cur_scp && scp->status & SLKED) {
1769 	scp->status &= ~SLKED;
1770 	update_kbd_state(scp, scp->status, SLKED);
1771 	if (scp->status & BUFFER_SAVED) {
1772 	    if (!sc_hist_restore(scp))
1773 		sc_remove_cutmarking(scp);
1774 	    scp->status &= ~BUFFER_SAVED;
1775 	    scp->status |= CURSOR_ENABLED;
1776 	    sc_draw_cursor_image(scp);
1777 	}
1778 #if 0
1779 	/*
1780 	 * XXX: Now that TTY's have their own locks, we cannot process
1781 	 * any data after disabling scroll lock. cnputs already holds a
1782 	 * spinlock.
1783 	 */
1784 	tp = SC_DEV(scp->sc, scp->index);
1785 	/* XXX "tp" can be NULL */
1786 	tty_lock(tp);
1787 	if (tty_opened(tp))
1788 	    sctty_outwakeup(tp);
1789 	tty_unlock(tp);
1790 #endif
1791     }
1792 #endif /* !SC_NO_HISTORY */
1793 
1794     buf[0] = c;
1795     sc_puts(scp, buf, 1, 1);
1796 
1797     s = spltty();	/* block sckbdevent and scrn_timer */
1798     sccnupdate(scp);
1799     splx(s);
1800     SC_VIDEO_UNLOCK(scp->sc);
1801 }
1802 
1803 static int
1804 sc_cngetc(struct consdev *cd)
1805 {
1806     static struct fkeytab fkey;
1807     static int fkeycp;
1808     scr_stat *scp;
1809     const u_char *p;
1810     int s = spltty();	/* block sckbdevent and scrn_timer while we poll */
1811     int c;
1812 
1813     /* assert(sc_console != NULL) */
1814 
1815     /*
1816      * Stop the screen saver and update the screen if necessary.
1817      * What if we have been running in the screen saver code... XXX
1818      */
1819     sc_touch_scrn_saver();
1820     scp = sc_console->sc->cur_scp;	/* XXX */
1821     sccnupdate(scp);
1822 
1823     if (fkeycp < fkey.len) {
1824 	splx(s);
1825 	return fkey.str[fkeycp++];
1826     }
1827 
1828     if (scp->sc->kbd == NULL) {
1829 	splx(s);
1830 	return -1;
1831     }
1832 
1833     c = scgetc(scp->sc, SCGETC_CN | SCGETC_NONBLOCK, NULL);
1834 
1835     switch (KEYFLAGS(c)) {
1836     case 0:	/* normal char */
1837 	return KEYCHAR(c);
1838     case FKEY:	/* function key */
1839 	p = (*scp->tsw->te_fkeystr)(scp, c);
1840 	if (p != NULL) {
1841 	    fkey.len = strlen(p);
1842 	    bcopy(p, fkey.str, fkey.len);
1843 	    fkeycp = 1;
1844 	    return fkey.str[0];
1845 	}
1846 	p = kbdd_get_fkeystr(scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
1847 	fkey.len = fkeycp;
1848 	if ((p != NULL) && (fkey.len > 0)) {
1849 	    bcopy(p, fkey.str, fkey.len);
1850 	    fkeycp = 1;
1851 	    return fkey.str[0];
1852 	}
1853 	return c;	/* XXX */
1854     case NOKEY:
1855     case ERRKEY:
1856     default:
1857 	return -1;
1858     }
1859     /* NOT REACHED */
1860 }
1861 
1862 static void
1863 sccnupdate(scr_stat *scp)
1864 {
1865     /* this is a cut-down version of scrn_timer()... */
1866 
1867     if (suspend_in_progress || scp->sc->font_loading_in_progress)
1868 	return;
1869 
1870     if (kdb_active || panicstr || shutdown_in_progress) {
1871 	sc_touch_scrn_saver();
1872     } else if (scp != scp->sc->cur_scp) {
1873 	return;
1874     }
1875 
1876     if (!run_scrn_saver)
1877 	scp->sc->flags &= ~SC_SCRN_IDLE;
1878 #ifdef DEV_SPLASH
1879     if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
1880 	if (scp->sc->flags & SC_SCRN_BLANKED)
1881             stop_scrn_saver(scp->sc, current_saver);
1882 #endif
1883 
1884     if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress
1885 	|| scp->sc->switch_in_progress)
1886 	return;
1887     /*
1888      * FIXME: unlike scrn_timer(), we call scrn_update() from here even
1889      * when write_in_progress is non-zero.  XXX
1890      */
1891 
1892     if (!ISGRAPHSC(scp) && !(scp->sc->flags & SC_SCRN_BLANKED))
1893 	scrn_update(scp, TRUE);
1894 }
1895 
1896 static void
1897 scrn_timer(void *arg)
1898 {
1899 #ifndef PC98
1900     static time_t kbd_time_stamp = 0;
1901 #endif
1902     sc_softc_t *sc;
1903     scr_stat *scp;
1904     int again, rate;
1905 
1906     again = (arg != NULL);
1907     if (arg != NULL)
1908 	sc = (sc_softc_t *)arg;
1909     else if (sc_console != NULL)
1910 	sc = sc_console->sc;
1911     else
1912 	return;
1913 
1914     /* find the vty to update */
1915     scp = sc->cur_scp;
1916 
1917     /* don't do anything when we are performing some I/O operations */
1918     if (suspend_in_progress || sc->font_loading_in_progress)
1919 	goto done;
1920 
1921 #ifndef PC98
1922     if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
1923 	/* try to allocate a keyboard automatically */
1924 	if (kbd_time_stamp != time_uptime) {
1925 	    kbd_time_stamp = time_uptime;
1926 	    sc->keyboard = sc_allocate_keyboard(sc, -1);
1927 	    if (sc->keyboard >= 0) {
1928 		sc->kbd = kbd_get_keyboard(sc->keyboard);
1929 		(void)kbdd_ioctl(sc->kbd, KDSKBMODE,
1930 			  (caddr_t)&sc->cur_scp->kbd_mode);
1931 		update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1932 				 LOCK_MASK);
1933 	    }
1934 	}
1935     }
1936 #endif /* PC98 */
1937 
1938     /* should we stop the screen saver? */
1939     if (kdb_active || panicstr || shutdown_in_progress)
1940 	sc_touch_scrn_saver();
1941     if (run_scrn_saver) {
1942 	if (time_uptime > sc->scrn_time_stamp + scrn_blank_time)
1943 	    sc->flags |= SC_SCRN_IDLE;
1944 	else
1945 	    sc->flags &= ~SC_SCRN_IDLE;
1946     } else {
1947 	sc->scrn_time_stamp = time_uptime;
1948 	sc->flags &= ~SC_SCRN_IDLE;
1949 	if (scrn_blank_time > 0)
1950 	    run_scrn_saver = TRUE;
1951     }
1952 #ifdef DEV_SPLASH
1953     if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
1954 	if (sc->flags & SC_SCRN_BLANKED)
1955             stop_scrn_saver(sc, current_saver);
1956 #endif
1957 
1958     /* should we just return ? */
1959     if (sc->blink_in_progress || sc->switch_in_progress
1960 	|| sc->write_in_progress)
1961 	goto done;
1962 
1963     /* Update the screen */
1964     scp = sc->cur_scp;		/* cur_scp may have changed... */
1965     if (!ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1966 	scrn_update(scp, TRUE);
1967 
1968 #ifdef DEV_SPLASH
1969     /* should we activate the screen saver? */
1970     if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
1971 	if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
1972 	    (*current_saver)(sc, TRUE);
1973 #endif
1974 
1975 done:
1976     if (again) {
1977 	/*
1978 	 * Use reduced "refresh" rate if we are in graphics and that is not a
1979 	 * graphical screen saver.  In such case we just have nothing to do.
1980 	 */
1981 	if (ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1982 	    rate = 2;
1983 	else
1984 	    rate = 30;
1985 	callout_reset_sbt(&sc->ctimeout, SBT_1S / rate, 0,
1986 	    scrn_timer, sc, C_PREL(1));
1987     }
1988 }
1989 
1990 static int
1991 and_region(int *s1, int *e1, int s2, int e2)
1992 {
1993     if (*e1 < s2 || e2 < *s1)
1994 	return FALSE;
1995     *s1 = imax(*s1, s2);
1996     *e1 = imin(*e1, e2);
1997     return TRUE;
1998 }
1999 
2000 static void
2001 scrn_update(scr_stat *scp, int show_cursor)
2002 {
2003     int start;
2004     int end;
2005     int s;
2006     int e;
2007 
2008     /* assert(scp == scp->sc->cur_scp) */
2009 
2010     SC_VIDEO_LOCK(scp->sc);
2011 
2012 #ifndef SC_NO_CUTPASTE
2013     /* remove the previous mouse pointer image if necessary */
2014     if (scp->status & MOUSE_VISIBLE) {
2015 	s = scp->mouse_pos;
2016 	e = scp->mouse_pos + scp->xsize + 1;
2017 	if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN))
2018 	    || and_region(&s, &e, scp->start, scp->end)
2019 	    || ((scp->status & CURSOR_ENABLED) &&
2020 		(scp->cursor_pos != scp->cursor_oldpos) &&
2021 		(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos)
2022 		 || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) {
2023 	    sc_remove_mouse_image(scp);
2024 	    if (scp->end >= scp->xsize*scp->ysize)
2025 		scp->end = scp->xsize*scp->ysize - 1;
2026 	}
2027     }
2028 #endif /* !SC_NO_CUTPASTE */
2029 
2030 #if 1
2031     /* debug: XXX */
2032     if (scp->end >= scp->xsize*scp->ysize) {
2033 	printf("scrn_update(): scp->end %d > size_of_screen!!\n", scp->end);
2034 	scp->end = scp->xsize*scp->ysize - 1;
2035     }
2036     if (scp->start < 0) {
2037 	printf("scrn_update(): scp->start %d < 0\n", scp->start);
2038 	scp->start = 0;
2039     }
2040 #endif
2041 
2042     /* update screen image */
2043     if (scp->start <= scp->end)  {
2044 	if (scp->mouse_cut_end >= 0) {
2045 	    /* there is a marked region for cut & paste */
2046 	    if (scp->mouse_cut_start <= scp->mouse_cut_end) {
2047 		start = scp->mouse_cut_start;
2048 		end = scp->mouse_cut_end;
2049 	    } else {
2050 		start = scp->mouse_cut_end;
2051 		end = scp->mouse_cut_start - 1;
2052 	    }
2053 	    s = start;
2054 	    e = end;
2055 	    /* does the cut-mark region overlap with the update region? */
2056 	    if (and_region(&s, &e, scp->start, scp->end)) {
2057 		(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
2058 		s = 0;
2059 		e = start - 1;
2060 		if (and_region(&s, &e, scp->start, scp->end))
2061 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
2062 		s = end + 1;
2063 		e = scp->xsize*scp->ysize - 1;
2064 		if (and_region(&s, &e, scp->start, scp->end))
2065 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
2066 	    } else {
2067 		(*scp->rndr->draw)(scp, scp->start,
2068 				   scp->end - scp->start + 1, FALSE);
2069 	    }
2070 	} else {
2071 	    (*scp->rndr->draw)(scp, scp->start,
2072 			       scp->end - scp->start + 1, FALSE);
2073 	}
2074     }
2075 
2076     /* we are not to show the cursor and the mouse pointer... */
2077     if (!show_cursor) {
2078         scp->end = 0;
2079         scp->start = scp->xsize*scp->ysize - 1;
2080 	SC_VIDEO_UNLOCK(scp->sc);
2081 	return;
2082     }
2083 
2084     /* update cursor image */
2085     if (scp->status & CURSOR_ENABLED) {
2086 	s = scp->start;
2087 	e = scp->end;
2088         /* did cursor move since last time ? */
2089         if (scp->cursor_pos != scp->cursor_oldpos) {
2090             /* do we need to remove old cursor image ? */
2091             if (!and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
2092                 sc_remove_cursor_image(scp);
2093             sc_draw_cursor_image(scp);
2094         } else {
2095             if (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos))
2096 		/* cursor didn't move, but has been overwritten */
2097 		sc_draw_cursor_image(scp);
2098 	    else if (scp->curs_attr.flags & CONS_BLINK_CURSOR)
2099 		/* if it's a blinking cursor, update it */
2100 		(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
2101 					   sc_inside_cutmark(scp,
2102 					       scp->cursor_pos));
2103         }
2104     }
2105 
2106 #ifndef SC_NO_CUTPASTE
2107     /* update "pseudo" mouse pointer image */
2108     if (scp->sc->flags & SC_MOUSE_ENABLED) {
2109 	if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
2110 	    scp->status &= ~MOUSE_MOVED;
2111 	    sc_draw_mouse_image(scp);
2112 	}
2113     }
2114 #endif /* SC_NO_CUTPASTE */
2115 
2116     scp->end = 0;
2117     scp->start = scp->xsize*scp->ysize - 1;
2118 
2119     SC_VIDEO_UNLOCK(scp->sc);
2120 }
2121 
2122 #ifdef DEV_SPLASH
2123 static int
2124 scsplash_callback(int event, void *arg)
2125 {
2126     sc_softc_t *sc;
2127     int error;
2128 
2129     sc = (sc_softc_t *)arg;
2130 
2131     switch (event) {
2132     case SPLASH_INIT:
2133 	if (add_scrn_saver(scsplash_saver) == 0) {
2134 	    sc->flags &= ~SC_SAVER_FAILED;
2135 	    run_scrn_saver = TRUE;
2136 	    if (cold && !(boothowto & RB_VERBOSE)) {
2137 		scsplash_stick(TRUE);
2138 		(*current_saver)(sc, TRUE);
2139 	    }
2140 	}
2141 	return 0;
2142 
2143     case SPLASH_TERM:
2144 	if (current_saver == scsplash_saver) {
2145 	    scsplash_stick(FALSE);
2146 	    error = remove_scrn_saver(scsplash_saver);
2147 	    if (error)
2148 		return error;
2149 	}
2150 	return 0;
2151 
2152     default:
2153 	return EINVAL;
2154     }
2155 }
2156 
2157 static void
2158 scsplash_saver(sc_softc_t *sc, int show)
2159 {
2160     static int busy = FALSE;
2161     scr_stat *scp;
2162 
2163     if (busy)
2164 	return;
2165     busy = TRUE;
2166 
2167     scp = sc->cur_scp;
2168     if (show) {
2169 	if (!(sc->flags & SC_SAVER_FAILED)) {
2170 	    if (!(sc->flags & SC_SCRN_BLANKED))
2171 		set_scrn_saver_mode(scp, -1, NULL, 0);
2172 	    switch (splash(sc->adp, TRUE)) {
2173 	    case 0:		/* succeeded */
2174 		break;
2175 	    case EAGAIN:	/* try later */
2176 		restore_scrn_saver_mode(scp, FALSE);
2177 		sc_touch_scrn_saver();		/* XXX */
2178 		break;
2179 	    default:
2180 		sc->flags |= SC_SAVER_FAILED;
2181 		scsplash_stick(FALSE);
2182 		restore_scrn_saver_mode(scp, TRUE);
2183 		printf("scsplash_saver(): failed to put up the image\n");
2184 		break;
2185 	    }
2186 	}
2187     } else if (!sticky_splash) {
2188 	if ((sc->flags & SC_SCRN_BLANKED) && (splash(sc->adp, FALSE) == 0))
2189 	    restore_scrn_saver_mode(scp, TRUE);
2190     }
2191     busy = FALSE;
2192 }
2193 
2194 static int
2195 add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2196 {
2197 #if 0
2198     int error;
2199 
2200     if (current_saver != none_saver) {
2201 	error = remove_scrn_saver(current_saver);
2202 	if (error)
2203 	    return error;
2204     }
2205 #endif
2206     if (current_saver != none_saver)
2207 	return EBUSY;
2208 
2209     run_scrn_saver = FALSE;
2210     saver_mode = CONS_LKM_SAVER;
2211     current_saver = this_saver;
2212     return 0;
2213 }
2214 
2215 static int
2216 remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2217 {
2218     if (current_saver != this_saver)
2219 	return EINVAL;
2220 
2221 #if 0
2222     /*
2223      * In order to prevent `current_saver' from being called by
2224      * the timeout routine `scrn_timer()' while we manipulate
2225      * the saver list, we shall set `current_saver' to `none_saver'
2226      * before stopping the current saver, rather than blocking by `splXX()'.
2227      */
2228     current_saver = none_saver;
2229     if (scrn_blanked)
2230         stop_scrn_saver(this_saver);
2231 #endif
2232 
2233     /* unblank all blanked screens */
2234     wait_scrn_saver_stop(NULL);
2235     if (scrn_blanked)
2236 	return EBUSY;
2237 
2238     current_saver = none_saver;
2239     return 0;
2240 }
2241 
2242 static int
2243 set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
2244 {
2245     int s;
2246 
2247     /* assert(scp == scp->sc->cur_scp) */
2248     s = spltty();
2249     if (!ISGRAPHSC(scp))
2250 	sc_remove_cursor_image(scp);
2251     scp->splash_save_mode = scp->mode;
2252     scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
2253     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
2254     scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
2255     scp->sc->flags |= SC_SCRN_BLANKED;
2256     ++scrn_blanked;
2257     splx(s);
2258     if (mode < 0)
2259 	return 0;
2260     scp->mode = mode;
2261     if (set_mode(scp) == 0) {
2262 	if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
2263 	    scp->status |= GRAPHICS_MODE;
2264 #ifndef SC_NO_PALETTE_LOADING
2265 	if (pal != NULL)
2266 	    vidd_load_palette(scp->sc->adp, pal);
2267 #endif
2268 	sc_set_border(scp, border);
2269 	return 0;
2270     } else {
2271 	s = spltty();
2272 	scp->mode = scp->splash_save_mode;
2273 	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2274 	scp->status |= scp->splash_save_status;
2275 	splx(s);
2276 	return 1;
2277     }
2278 }
2279 
2280 static int
2281 restore_scrn_saver_mode(scr_stat *scp, int changemode)
2282 {
2283     int mode;
2284     int status;
2285     int s;
2286 
2287     /* assert(scp == scp->sc->cur_scp) */
2288     s = spltty();
2289     mode = scp->mode;
2290     status = scp->status;
2291     scp->mode = scp->splash_save_mode;
2292     scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2293     scp->status |= scp->splash_save_status;
2294     scp->sc->flags &= ~SC_SCRN_BLANKED;
2295     if (!changemode) {
2296 	if (!ISGRAPHSC(scp))
2297 	    sc_draw_cursor_image(scp);
2298 	--scrn_blanked;
2299 	splx(s);
2300 	return 0;
2301     }
2302     if (set_mode(scp) == 0) {
2303 #ifndef SC_NO_PALETTE_LOADING
2304 #ifdef SC_PIXEL_MODE
2305 	if (scp->sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
2306 	    vidd_load_palette(scp->sc->adp, scp->sc->palette2);
2307 	else
2308 #endif
2309 	vidd_load_palette(scp->sc->adp, scp->sc->palette);
2310 #endif
2311 	--scrn_blanked;
2312 	splx(s);
2313 	return 0;
2314     } else {
2315 	scp->mode = mode;
2316 	scp->status = status;
2317 	splx(s);
2318 	return 1;
2319     }
2320 }
2321 
2322 static void
2323 stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
2324 {
2325     (*saver)(sc, FALSE);
2326     run_scrn_saver = FALSE;
2327     /* the screen saver may have chosen not to stop after all... */
2328     if (sc->flags & SC_SCRN_BLANKED)
2329 	return;
2330 
2331     mark_all(sc->cur_scp);
2332     if (sc->delayed_next_scr)
2333 	sc_switch_scr(sc, sc->delayed_next_scr - 1);
2334     if (!kdb_active)
2335 	wakeup(&scrn_blanked);
2336 }
2337 
2338 static int
2339 wait_scrn_saver_stop(sc_softc_t *sc)
2340 {
2341     int error = 0;
2342 
2343     while (scrn_blanked > 0) {
2344 	run_scrn_saver = FALSE;
2345 	if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
2346 	    error = 0;
2347 	    break;
2348 	}
2349 	error = tsleep(&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
2350 	if ((error != 0) && (error != ERESTART))
2351 	    break;
2352     }
2353     run_scrn_saver = FALSE;
2354     return error;
2355 }
2356 #endif /* DEV_SPLASH */
2357 
2358 void
2359 sc_touch_scrn_saver(void)
2360 {
2361     scsplash_stick(FALSE);
2362     run_scrn_saver = FALSE;
2363 }
2364 
2365 int
2366 sc_switch_scr(sc_softc_t *sc, u_int next_scr)
2367 {
2368     scr_stat *cur_scp;
2369     struct tty *tp;
2370     struct proc *p;
2371     int s;
2372 
2373     DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
2374 
2375     if (sc->cur_scp == NULL)
2376 	return (0);
2377 
2378     /* prevent switch if previously requested */
2379     if (sc->flags & SC_SCRN_VTYLOCK) {
2380 	    sc_bell(sc->cur_scp, sc->cur_scp->bell_pitch,
2381 		sc->cur_scp->bell_duration);
2382 	    return EPERM;
2383     }
2384 
2385     /* delay switch if the screen is blanked or being updated */
2386     if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress
2387 	|| sc->blink_in_progress) {
2388 	sc->delayed_next_scr = next_scr + 1;
2389 	sc_touch_scrn_saver();
2390 	DPRINTF(5, ("switch delayed\n"));
2391 	return 0;
2392     }
2393     sc->delayed_next_scr = 0;
2394 
2395     s = spltty();
2396     cur_scp = sc->cur_scp;
2397 
2398     /* we are in the middle of the vty switching process... */
2399     if (sc->switch_in_progress
2400 	&& (cur_scp->smode.mode == VT_PROCESS)
2401 	&& cur_scp->proc) {
2402 	p = pfind(cur_scp->pid);
2403 	if (cur_scp->proc != p) {
2404 	    if (p)
2405 		PROC_UNLOCK(p);
2406 	    /*
2407 	     * The controlling process has died!!.  Do some clean up.
2408 	     * NOTE:`cur_scp->proc' and `cur_scp->smode.mode'
2409 	     * are not reset here yet; they will be cleared later.
2410 	     */
2411 	    DPRINTF(5, ("cur_scp controlling process %d died, ",
2412 	       cur_scp->pid));
2413 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2414 		/*
2415 		 * Force the previous switch to finish, but return now
2416 		 * with error.
2417 		 */
2418 		DPRINTF(5, ("reset WAIT_REL, "));
2419 		finish_vt_rel(cur_scp, TRUE, &s);
2420 		splx(s);
2421 		DPRINTF(5, ("finishing previous switch\n"));
2422 		return EINVAL;
2423 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2424 		/* let's assume screen switch has been completed. */
2425 		DPRINTF(5, ("reset WAIT_ACQ, "));
2426 		finish_vt_acq(cur_scp);
2427 	    } else {
2428 		/*
2429 	 	 * We are in between screen release and acquisition, and
2430 		 * reached here via scgetc() or scrn_timer() which has
2431 		 * interrupted exchange_scr(). Don't do anything stupid.
2432 		 */
2433 		DPRINTF(5, ("waiting nothing, "));
2434 	    }
2435 	} else {
2436 	    if (p)
2437 		PROC_UNLOCK(p);
2438 	    /*
2439 	     * The controlling process is alive, but not responding...
2440 	     * It is either buggy or it may be just taking time.
2441 	     * The following code is a gross kludge to cope with this
2442 	     * problem for which there is no clean solution. XXX
2443 	     */
2444 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2445 		switch (sc->switch_in_progress++) {
2446 		case 1:
2447 		    break;
2448 		case 2:
2449 		    DPRINTF(5, ("sending relsig again, "));
2450 		    signal_vt_rel(cur_scp);
2451 		    break;
2452 		case 3:
2453 		    break;
2454 		case 4:
2455 		default:
2456 		    /*
2457 		     * Act as if the controlling program returned
2458 		     * VT_FALSE.
2459 		     */
2460 		    DPRINTF(5, ("force reset WAIT_REL, "));
2461 		    finish_vt_rel(cur_scp, FALSE, &s);
2462 		    splx(s);
2463 		    DPRINTF(5, ("act as if VT_FALSE was seen\n"));
2464 		    return EINVAL;
2465 		}
2466 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2467 		switch (sc->switch_in_progress++) {
2468 		case 1:
2469 		    break;
2470 		case 2:
2471 		    DPRINTF(5, ("sending acqsig again, "));
2472 		    signal_vt_acq(cur_scp);
2473 		    break;
2474 		case 3:
2475 		    break;
2476 		case 4:
2477 		default:
2478 		     /* clear the flag and finish the previous switch */
2479 		    DPRINTF(5, ("force reset WAIT_ACQ, "));
2480 		    finish_vt_acq(cur_scp);
2481 		    break;
2482 		}
2483 	    }
2484 	}
2485     }
2486 
2487     /*
2488      * Return error if an invalid argument is given, or vty switch
2489      * is still in progress.
2490      */
2491     if ((next_scr < sc->first_vty) || (next_scr >= sc->first_vty + sc->vtys)
2492 	|| sc->switch_in_progress) {
2493 	splx(s);
2494 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2495 	DPRINTF(5, ("error 1\n"));
2496 	return EINVAL;
2497     }
2498 
2499     /*
2500      * Don't allow switching away from the graphics mode vty
2501      * if the switch mode is VT_AUTO, unless the next vty is the same
2502      * as the current or the current vty has been closed (but showing).
2503      */
2504     tp = SC_DEV(sc, cur_scp->index);
2505     if ((cur_scp->index != next_scr)
2506 	&& tty_opened_ns(tp)
2507 	&& (cur_scp->smode.mode == VT_AUTO)
2508 	&& ISGRAPHSC(cur_scp)) {
2509 	splx(s);
2510 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2511 	DPRINTF(5, ("error, graphics mode\n"));
2512 	return EINVAL;
2513     }
2514 
2515     /*
2516      * Is the wanted vty open? Don't allow switching to a closed vty.
2517      * If we are in DDB, don't switch to a vty in the VT_PROCESS mode.
2518      * Note that we always allow the user to switch to the kernel
2519      * console even if it is closed.
2520      */
2521     if ((sc_console == NULL) || (next_scr != sc_console->index)) {
2522 	tp = SC_DEV(sc, next_scr);
2523 	if (!tty_opened_ns(tp)) {
2524 	    splx(s);
2525 	    sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2526 	    DPRINTF(5, ("error 2, requested vty isn't open!\n"));
2527 	    return EINVAL;
2528 	}
2529 	if (kdb_active && SC_STAT(tp)->smode.mode == VT_PROCESS) {
2530 	    splx(s);
2531 	    DPRINTF(5, ("error 3, requested vty is in the VT_PROCESS mode\n"));
2532 	    return EINVAL;
2533 	}
2534     }
2535 
2536     /* this is the start of vty switching process... */
2537     ++sc->switch_in_progress;
2538     sc->old_scp = cur_scp;
2539     sc->new_scp = sc_get_stat(SC_DEV(sc, next_scr));
2540     if (sc->new_scp == sc->old_scp) {
2541 	sc->switch_in_progress = 0;
2542 	/*
2543 	 * XXX wakeup() locks the scheduler lock which will hang if
2544 	 * the lock is in an in-between state, e.g., when we stop at
2545 	 * a breakpoint at fork_exit.  It has always been wrong to call
2546 	 * wakeup() when the debugger is active.  In RELENG_4, wakeup()
2547 	 * is supposed to be locked by splhigh(), but the debugger may
2548 	 * be invoked at splhigh().
2549 	 */
2550 	if (!kdb_active)
2551 	    wakeup(VTY_WCHAN(sc,next_scr));
2552 	splx(s);
2553 	DPRINTF(5, ("switch done (new == old)\n"));
2554 	return 0;
2555     }
2556 
2557     /* has controlling process died? */
2558     vt_proc_alive(sc->old_scp);
2559     vt_proc_alive(sc->new_scp);
2560 
2561     /* wait for the controlling process to release the screen, if necessary */
2562     if (signal_vt_rel(sc->old_scp)) {
2563 	splx(s);
2564 	return 0;
2565     }
2566 
2567     /* go set up the new vty screen */
2568     splx(s);
2569     exchange_scr(sc);
2570     s = spltty();
2571 
2572     /* wake up processes waiting for this vty */
2573     if (!kdb_active)
2574 	wakeup(VTY_WCHAN(sc,next_scr));
2575 
2576     /* wait for the controlling process to acknowledge, if necessary */
2577     if (signal_vt_acq(sc->cur_scp)) {
2578 	splx(s);
2579 	return 0;
2580     }
2581 
2582     sc->switch_in_progress = 0;
2583     if (sc->unit == sc_console_unit)
2584 	cnavailable(sc_consptr,  TRUE);
2585     splx(s);
2586     DPRINTF(5, ("switch done\n"));
2587 
2588     return 0;
2589 }
2590 
2591 static int
2592 do_switch_scr(sc_softc_t *sc, int s)
2593 {
2594     vt_proc_alive(sc->new_scp);
2595 
2596     splx(s);
2597     exchange_scr(sc);
2598     s = spltty();
2599     /* sc->cur_scp == sc->new_scp */
2600     wakeup(VTY_WCHAN(sc,sc->cur_scp->index));
2601 
2602     /* wait for the controlling process to acknowledge, if necessary */
2603     if (!signal_vt_acq(sc->cur_scp)) {
2604 	sc->switch_in_progress = 0;
2605 	if (sc->unit == sc_console_unit)
2606 	    cnavailable(sc_consptr,  TRUE);
2607     }
2608 
2609     return s;
2610 }
2611 
2612 static int
2613 vt_proc_alive(scr_stat *scp)
2614 {
2615     struct proc *p;
2616 
2617     if (scp->proc) {
2618 	if ((p = pfind(scp->pid)) != NULL)
2619 	    PROC_UNLOCK(p);
2620 	if (scp->proc == p)
2621 	    return TRUE;
2622 	scp->proc = NULL;
2623 	scp->smode.mode = VT_AUTO;
2624 	DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
2625     }
2626     return FALSE;
2627 }
2628 
2629 static int
2630 signal_vt_rel(scr_stat *scp)
2631 {
2632     if (scp->smode.mode != VT_PROCESS)
2633 	return FALSE;
2634     scp->status |= SWITCH_WAIT_REL;
2635     PROC_LOCK(scp->proc);
2636     kern_psignal(scp->proc, scp->smode.relsig);
2637     PROC_UNLOCK(scp->proc);
2638     DPRINTF(5, ("sending relsig to %d\n", scp->pid));
2639     return TRUE;
2640 }
2641 
2642 static int
2643 signal_vt_acq(scr_stat *scp)
2644 {
2645     if (scp->smode.mode != VT_PROCESS)
2646 	return FALSE;
2647     if (scp->sc->unit == sc_console_unit)
2648 	cnavailable(sc_consptr,  FALSE);
2649     scp->status |= SWITCH_WAIT_ACQ;
2650     PROC_LOCK(scp->proc);
2651     kern_psignal(scp->proc, scp->smode.acqsig);
2652     PROC_UNLOCK(scp->proc);
2653     DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
2654     return TRUE;
2655 }
2656 
2657 static int
2658 finish_vt_rel(scr_stat *scp, int release, int *s)
2659 {
2660     if (scp == scp->sc->old_scp && scp->status & SWITCH_WAIT_REL) {
2661 	scp->status &= ~SWITCH_WAIT_REL;
2662 	if (release)
2663 	    *s = do_switch_scr(scp->sc, *s);
2664 	else
2665 	    scp->sc->switch_in_progress = 0;
2666 	return 0;
2667     }
2668     return EINVAL;
2669 }
2670 
2671 static int
2672 finish_vt_acq(scr_stat *scp)
2673 {
2674     if (scp == scp->sc->new_scp && scp->status & SWITCH_WAIT_ACQ) {
2675 	scp->status &= ~SWITCH_WAIT_ACQ;
2676 	scp->sc->switch_in_progress = 0;
2677 	return 0;
2678     }
2679     return EINVAL;
2680 }
2681 
2682 static void
2683 exchange_scr(sc_softc_t *sc)
2684 {
2685     scr_stat *scp;
2686 
2687     /* save the current state of video and keyboard */
2688     sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
2689     if (!ISGRAPHSC(sc->old_scp))
2690 	sc_remove_cursor_image(sc->old_scp);
2691     if (sc->old_scp->kbd_mode == K_XLATE)
2692 	save_kbd_state(sc->old_scp);
2693 
2694     /* set up the video for the new screen */
2695     scp = sc->cur_scp = sc->new_scp;
2696 #ifdef PC98
2697     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp) || ISUNKNOWNSC(sc->new_scp))
2698 #else
2699     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
2700 #endif
2701 	set_mode(scp);
2702 #ifndef __sparc64__
2703     else
2704 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2705 		    (void *)sc->adp->va_window, FALSE);
2706 #endif
2707     scp->status |= MOUSE_HIDDEN;
2708     sc_move_cursor(scp, scp->xpos, scp->ypos);
2709     if (!ISGRAPHSC(scp))
2710 	sc_set_cursor_image(scp);
2711 #ifndef SC_NO_PALETTE_LOADING
2712     if (ISGRAPHSC(sc->old_scp)) {
2713 #ifdef SC_PIXEL_MODE
2714 	if (sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
2715 	    vidd_load_palette(sc->adp, sc->palette2);
2716 	else
2717 #endif
2718 	vidd_load_palette(sc->adp, sc->palette);
2719     }
2720 #endif
2721     sc_set_border(scp, scp->border);
2722 
2723     /* set up the keyboard for the new screen */
2724     if (sc->kbd_open_level == 0 && sc->old_scp->kbd_mode != scp->kbd_mode)
2725 	(void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
2726     update_kbd_state(scp, scp->status, LOCK_MASK);
2727 
2728     mark_all(scp);
2729 }
2730 
2731 static void
2732 sc_puts(scr_stat *scp, u_char *buf, int len, int kernel)
2733 {
2734 #ifdef DEV_SPLASH
2735     /* make screensaver happy */
2736     if (!sticky_splash && scp == scp->sc->cur_scp && !sc_saver_keyb_only)
2737 	run_scrn_saver = FALSE;
2738 #endif
2739 
2740     if (scp->tsw)
2741 	(*scp->tsw->te_puts)(scp, buf, len, kernel);
2742     if (scp->sc->delayed_next_scr)
2743 	sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
2744 }
2745 
2746 void
2747 sc_draw_cursor_image(scr_stat *scp)
2748 {
2749     /* assert(scp == scp->sc->cur_scp); */
2750     SC_VIDEO_LOCK(scp->sc);
2751     (*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
2752 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, TRUE,
2753 			      sc_inside_cutmark(scp, scp->cursor_pos));
2754     scp->cursor_oldpos = scp->cursor_pos;
2755     SC_VIDEO_UNLOCK(scp->sc);
2756 }
2757 
2758 void
2759 sc_remove_cursor_image(scr_stat *scp)
2760 {
2761     /* assert(scp == scp->sc->cur_scp); */
2762     SC_VIDEO_LOCK(scp->sc);
2763     (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
2764 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, FALSE,
2765 			      sc_inside_cutmark(scp, scp->cursor_oldpos));
2766     SC_VIDEO_UNLOCK(scp->sc);
2767 }
2768 
2769 static void
2770 update_cursor_image(scr_stat *scp)
2771 {
2772     /* assert(scp == scp->sc->cur_scp); */
2773     sc_remove_cursor_image(scp);
2774     sc_set_cursor_image(scp);
2775     sc_draw_cursor_image(scp);
2776 }
2777 
2778 void
2779 sc_set_cursor_image(scr_stat *scp)
2780 {
2781     scp->curs_attr.flags = scp->curr_curs_attr.flags;
2782     if (scp->curs_attr.flags & CONS_HIDDEN_CURSOR) {
2783 	/* hidden cursor is internally represented as zero-height underline */
2784 	scp->curs_attr.flags = CONS_CHAR_CURSOR;
2785 	scp->curs_attr.base = scp->curs_attr.height = 0;
2786     } else if (scp->curs_attr.flags & CONS_CHAR_CURSOR) {
2787 	scp->curs_attr.base = imin(scp->curr_curs_attr.base,
2788 				  scp->font_size - 1);
2789 	scp->curs_attr.height = imin(scp->curr_curs_attr.height,
2790 				    scp->font_size - scp->curs_attr.base);
2791     } else {	/* block cursor */
2792 	scp->curs_attr.base = 0;
2793 	scp->curs_attr.height = scp->font_size;
2794     }
2795 
2796     /* assert(scp == scp->sc->cur_scp); */
2797     SC_VIDEO_LOCK(scp->sc);
2798     (*scp->rndr->set_cursor)(scp, scp->curs_attr.base, scp->curs_attr.height,
2799 			     scp->curs_attr.flags & CONS_BLINK_CURSOR);
2800     SC_VIDEO_UNLOCK(scp->sc);
2801 }
2802 
2803 static void
2804 change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2805 {
2806     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp))
2807 	sc_remove_cursor_image(scp);
2808 
2809     if (base >= 0)
2810 	scp->curr_curs_attr.base = base;
2811     if (height >= 0)
2812 	scp->curr_curs_attr.height = height;
2813     if (flags & CONS_RESET_CURSOR)
2814 	scp->curr_curs_attr = scp->dflt_curs_attr;
2815     else
2816 	scp->curr_curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2817 
2818     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp)) {
2819 	sc_set_cursor_image(scp);
2820 	sc_draw_cursor_image(scp);
2821     }
2822 }
2823 
2824 void
2825 sc_change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2826 {
2827     sc_softc_t *sc;
2828     struct tty *tp;
2829     int s;
2830     int i;
2831 
2832     s = spltty();
2833     if ((flags != -1) && (flags & CONS_LOCAL_CURSOR)) {
2834 	/* local (per vty) change */
2835 	change_cursor_shape(scp, flags, base, height);
2836 	splx(s);
2837 	return;
2838     }
2839 
2840     /* global change */
2841     sc = scp->sc;
2842     if (base >= 0)
2843 	sc->curs_attr.base = base;
2844     if (height >= 0)
2845 	sc->curs_attr.height = height;
2846     if (flags != -1) {
2847 	if (flags & CONS_RESET_CURSOR)
2848 	    sc->curs_attr = sc->dflt_curs_attr;
2849 	else
2850 	    sc->curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2851     }
2852 
2853     for (i = sc->first_vty; i < sc->first_vty + sc->vtys; ++i) {
2854 	if ((tp = SC_DEV(sc, i)) == NULL)
2855 	    continue;
2856 	if ((scp = sc_get_stat(tp)) == NULL)
2857 	    continue;
2858 	scp->dflt_curs_attr = sc->curs_attr;
2859 	change_cursor_shape(scp, CONS_RESET_CURSOR, -1, -1);
2860     }
2861     splx(s);
2862 }
2863 
2864 static void
2865 scinit(int unit, int flags)
2866 {
2867 
2868     /*
2869      * When syscons is being initialized as the kernel console, malloc()
2870      * is not yet functional, because various kernel structures has not been
2871      * fully initialized yet.  Therefore, we need to declare the following
2872      * static buffers for the console.  This is less than ideal,
2873      * but is necessry evil for the time being.  XXX
2874      */
2875 #ifdef PC98
2876     static u_short sc_buffer[ROW*COL*2];/* XXX */
2877 #else
2878     static u_short sc_buffer[ROW*COL];	/* XXX */
2879 #endif
2880 #ifndef SC_NO_FONT_LOADING
2881     static u_char font_8[256*8];
2882     static u_char font_14[256*14];
2883     static u_char font_16[256*16];
2884 #endif
2885 
2886     sc_softc_t *sc;
2887     scr_stat *scp;
2888     video_adapter_t *adp;
2889     int col;
2890     int row;
2891     int i;
2892 
2893     /* one time initialization */
2894     if (init_done == COLD)
2895 	sc_get_bios_values(&bios_value);
2896     init_done = WARM;
2897 
2898     /*
2899      * Allocate resources.  Even if we are being called for the second
2900      * time, we must allocate them again, because they might have
2901      * disappeared...
2902      */
2903     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2904     if ((sc->flags & SC_INIT_DONE) == 0)
2905 	SC_VIDEO_LOCKINIT(sc);
2906 
2907     adp = NULL;
2908     if (sc->adapter >= 0) {
2909 	vid_release(sc->adp, (void *)&sc->adapter);
2910 	adp = sc->adp;
2911 	sc->adp = NULL;
2912     }
2913     if (sc->keyboard >= 0) {
2914 	DPRINTF(5, ("sc%d: releasing kbd%d\n", unit, sc->keyboard));
2915 	i = kbd_release(sc->kbd, (void *)&sc->keyboard);
2916 	DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
2917 	if (sc->kbd != NULL) {
2918 	    DPRINTF(5, ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
2919 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2920 	}
2921 	sc->kbd = NULL;
2922     }
2923     sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
2924     sc->adp = vid_get_adapter(sc->adapter);
2925     /* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
2926 
2927     sc->keyboard = sc_allocate_keyboard(sc, unit);
2928     DPRINTF(1, ("sc%d: keyboard %d\n", unit, sc->keyboard));
2929 
2930     sc->kbd = kbd_get_keyboard(sc->keyboard);
2931     if (sc->kbd != NULL) {
2932 	DPRINTF(1, ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n",
2933 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2934     }
2935 
2936     if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
2937 
2938 	sc->initial_mode = sc->adp->va_initial_mode;
2939 
2940 #ifndef SC_NO_FONT_LOADING
2941 	if (flags & SC_KERNEL_CONSOLE) {
2942 	    sc->font_8 = font_8;
2943 	    sc->font_14 = font_14;
2944 	    sc->font_16 = font_16;
2945 	} else if (sc->font_8 == NULL) {
2946 	    /* assert(sc_malloc) */
2947 	    sc->font_8 = malloc(sizeof(font_8), M_DEVBUF, M_WAITOK);
2948 	    sc->font_14 = malloc(sizeof(font_14), M_DEVBUF, M_WAITOK);
2949 	    sc->font_16 = malloc(sizeof(font_16), M_DEVBUF, M_WAITOK);
2950 	}
2951 #endif
2952 
2953 	/* extract the hardware cursor location and hide the cursor for now */
2954 	vidd_read_hw_cursor(sc->adp, &col, &row);
2955 	vidd_set_hw_cursor(sc->adp, -1, -1);
2956 
2957 	/* set up the first console */
2958 	sc->first_vty = unit*MAXCONS;
2959 	sc->vtys = MAXCONS;		/* XXX: should be configurable */
2960 	if (flags & SC_KERNEL_CONSOLE) {
2961 	    /*
2962 	     * Set up devs structure but don't use it yet, calling make_dev()
2963 	     * might panic kernel.  Wait for sc_attach_unit() to actually
2964 	     * create the devices.
2965 	     */
2966 	    sc->dev = main_devs;
2967 	    scp = &main_console;
2968 	    init_scp(sc, sc->first_vty, scp);
2969 	    sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize, scp->ysize,
2970 			(void *)sc_buffer, FALSE);
2971 
2972 	    /* move cursors to the initial positions */
2973 	    if (col >= scp->xsize)
2974 		col = 0;
2975 	    if (row >= scp->ysize)
2976 		row = scp->ysize - 1;
2977 	    scp->xpos = col;
2978 	    scp->ypos = row;
2979 	    scp->cursor_pos = scp->cursor_oldpos = row*scp->xsize + col;
2980 
2981 	    if (sc_init_emulator(scp, SC_DFLT_TERM))
2982 		sc_init_emulator(scp, "*");
2983 	    (*scp->tsw->te_default_attr)(scp,
2984 					 user_default.std_color,
2985 					 user_default.rev_color);
2986 	} else {
2987 	    /* assert(sc_malloc) */
2988 	    sc->dev = malloc(sizeof(struct tty *)*sc->vtys, M_DEVBUF,
2989 	        M_WAITOK|M_ZERO);
2990 	    sc->dev[0] = sc_alloc_tty(0, unit * MAXCONS);
2991 	    scp = alloc_scp(sc, sc->first_vty);
2992 	    SC_STAT(sc->dev[0]) = scp;
2993 	}
2994 	sc->cur_scp = scp;
2995 
2996 #ifndef __sparc64__
2997 	/* copy screen to temporary buffer */
2998 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2999 		    (void *)scp->sc->adp->va_window, FALSE);
3000 	if (ISTEXTSC(scp))
3001 	    sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0, scp->xsize*scp->ysize);
3002 #endif
3003 
3004 	if (bios_value.cursor_end < scp->font_size)
3005 	    sc->dflt_curs_attr.base = scp->font_size -
3006 					  bios_value.cursor_end - 1;
3007 	else
3008 	    sc->dflt_curs_attr.base = 0;
3009 	i = bios_value.cursor_end - bios_value.cursor_start + 1;
3010 	sc->dflt_curs_attr.height = imin(i, scp->font_size);
3011 	sc->dflt_curs_attr.flags = 0;
3012 	sc->curs_attr = sc->dflt_curs_attr;
3013 	scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
3014 
3015 #ifndef SC_NO_SYSMOUSE
3016 	sc_mouse_move(scp, scp->xpixel/2, scp->ypixel/2);
3017 #endif
3018 	if (!ISGRAPHSC(scp)) {
3019     	    sc_set_cursor_image(scp);
3020     	    sc_draw_cursor_image(scp);
3021 	}
3022 
3023 	/* save font and palette */
3024 #ifndef SC_NO_FONT_LOADING
3025 	sc->fonts_loaded = 0;
3026 	if (ISFONTAVAIL(sc->adp->va_flags)) {
3027 #ifdef SC_DFLT_FONT
3028 	    bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
3029 	    bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
3030 	    bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
3031 	    sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
3032 	    if (scp->font_size < 14) {
3033 		sc_load_font(scp, 0, 8, 8, sc->font_8, 0, 256);
3034 	    } else if (scp->font_size >= 16) {
3035 		sc_load_font(scp, 0, 16, 8, sc->font_16, 0, 256);
3036 	    } else {
3037 		sc_load_font(scp, 0, 14, 8, sc->font_14, 0, 256);
3038 	    }
3039 #else /* !SC_DFLT_FONT */
3040 	    if (scp->font_size < 14) {
3041 		sc_save_font(scp, 0, 8, 8, sc->font_8, 0, 256);
3042 		sc->fonts_loaded = FONT_8;
3043 	    } else if (scp->font_size >= 16) {
3044 		sc_save_font(scp, 0, 16, 8, sc->font_16, 0, 256);
3045 		sc->fonts_loaded = FONT_16;
3046 	    } else {
3047 		sc_save_font(scp, 0, 14, 8, sc->font_14, 0, 256);
3048 		sc->fonts_loaded = FONT_14;
3049 	    }
3050 #endif /* SC_DFLT_FONT */
3051 	    /* FONT KLUDGE: always use the font page #0. XXX */
3052 	    sc_show_font(scp, 0);
3053 	}
3054 #endif /* !SC_NO_FONT_LOADING */
3055 
3056 #ifndef SC_NO_PALETTE_LOADING
3057 	vidd_save_palette(sc->adp, sc->palette);
3058 #ifdef SC_PIXEL_MODE
3059 	for (i = 0; i < sizeof(sc->palette2); i++)
3060 		sc->palette2[i] = i / 3;
3061 #endif
3062 #endif
3063 
3064 #ifdef DEV_SPLASH
3065 	if (!(sc->flags & SC_SPLASH_SCRN)) {
3066 	    /* we are ready to put up the splash image! */
3067 	    splash_init(sc->adp, scsplash_callback, sc);
3068 	    sc->flags |= SC_SPLASH_SCRN;
3069 	}
3070 #endif
3071     }
3072 
3073     /* the rest is not necessary, if we have done it once */
3074     if (sc->flags & SC_INIT_DONE)
3075 	return;
3076 
3077     /* initialize mapscrn arrays to a one to one map */
3078     for (i = 0; i < sizeof(sc->scr_map); i++)
3079 	sc->scr_map[i] = sc->scr_rmap[i] = i;
3080 #ifdef PC98
3081     sc->scr_map[0x5c] = (u_char)0xfc;	/* for backslash */
3082 #endif
3083 
3084     sc->flags |= SC_INIT_DONE;
3085 }
3086 
3087 static void
3088 scterm(int unit, int flags)
3089 {
3090     sc_softc_t *sc;
3091     scr_stat *scp;
3092 
3093     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
3094     if (sc == NULL)
3095 	return;			/* shouldn't happen */
3096 
3097 #ifdef DEV_SPLASH
3098     /* this console is no longer available for the splash screen */
3099     if (sc->flags & SC_SPLASH_SCRN) {
3100 	splash_term(sc->adp);
3101 	sc->flags &= ~SC_SPLASH_SCRN;
3102     }
3103 #endif
3104 
3105 #if 0 /* XXX */
3106     /* move the hardware cursor to the upper-left corner */
3107     vidd_set_hw_cursor(sc->adp, 0, 0);
3108 #endif
3109 
3110     /* release the keyboard and the video card */
3111     if (sc->keyboard >= 0)
3112 	kbd_release(sc->kbd, &sc->keyboard);
3113     if (sc->adapter >= 0)
3114 	vid_release(sc->adp, &sc->adapter);
3115 
3116     /* stop the terminal emulator, if any */
3117     scp = sc_get_stat(sc->dev[0]);
3118     if (scp->tsw)
3119 	(*scp->tsw->te_term)(scp, &scp->ts);
3120     if (scp->ts != NULL)
3121 	free(scp->ts, M_DEVBUF);
3122     mtx_destroy(&sc->video_mtx);
3123 
3124     /* clear the structure */
3125     if (!(flags & SC_KERNEL_CONSOLE)) {
3126 	/* XXX: We need delete_dev() for this */
3127 	free(sc->dev, M_DEVBUF);
3128 #if 0
3129 	/* XXX: We need a ttyunregister for this */
3130 	free(sc->tty, M_DEVBUF);
3131 #endif
3132 #ifndef SC_NO_FONT_LOADING
3133 	free(sc->font_8, M_DEVBUF);
3134 	free(sc->font_14, M_DEVBUF);
3135 	free(sc->font_16, M_DEVBUF);
3136 #endif
3137 	/* XXX vtb, history */
3138     }
3139     bzero(sc, sizeof(*sc));
3140     sc->keyboard = -1;
3141     sc->adapter = -1;
3142 }
3143 
3144 static void
3145 scshutdown(__unused void *arg, __unused int howto)
3146 {
3147 
3148 	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3149 	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3150 	KASSERT(sc_console->sc->cur_scp != NULL,
3151 	    ("sc_console->sc->cur_scp != NULL"));
3152 
3153 	sc_touch_scrn_saver();
3154 	if (!cold &&
3155 	    sc_console->sc->cur_scp->index != sc_console->index &&
3156 	    sc_console->sc->cur_scp->smode.mode == VT_AUTO &&
3157 	    sc_console->smode.mode == VT_AUTO)
3158 		sc_switch_scr(sc_console->sc, sc_console->index);
3159 	shutdown_in_progress = TRUE;
3160 }
3161 
3162 static void
3163 scsuspend(__unused void *arg)
3164 {
3165 	int retry;
3166 
3167 	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3168 	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3169 	KASSERT(sc_console->sc->cur_scp != NULL,
3170 	    ("sc_console->sc->cur_scp != NULL"));
3171 
3172 	sc_susp_scr = sc_console->sc->cur_scp->index;
3173 	if (sc_no_suspend_vtswitch ||
3174 	    sc_susp_scr == sc_console->index) {
3175 		sc_touch_scrn_saver();
3176 		sc_susp_scr = -1;
3177 		return;
3178 	}
3179 	for (retry = 0; retry < 10; retry++) {
3180 		sc_switch_scr(sc_console->sc, sc_console->index);
3181 		if (!sc_console->sc->switch_in_progress)
3182 			break;
3183 		pause("scsuspend", hz);
3184 	}
3185 	suspend_in_progress = TRUE;
3186 }
3187 
3188 static void
3189 scresume(__unused void *arg)
3190 {
3191 
3192 	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3193 	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3194 	KASSERT(sc_console->sc->cur_scp != NULL,
3195 	    ("sc_console->sc->cur_scp != NULL"));
3196 
3197 	suspend_in_progress = FALSE;
3198 	if (sc_susp_scr < 0) {
3199 		update_font(sc_console->sc->cur_scp);
3200 		return;
3201 	}
3202 	sc_switch_scr(sc_console->sc, sc_susp_scr);
3203 }
3204 
3205 int
3206 sc_clean_up(scr_stat *scp)
3207 {
3208 #ifdef DEV_SPLASH
3209     int error;
3210 #endif
3211 
3212     if (scp->sc->flags & SC_SCRN_BLANKED) {
3213 	sc_touch_scrn_saver();
3214 #ifdef DEV_SPLASH
3215 	if ((error = wait_scrn_saver_stop(scp->sc)))
3216 	    return error;
3217 #endif
3218     }
3219     scp->status |= MOUSE_HIDDEN;
3220     sc_remove_mouse_image(scp);
3221     sc_remove_cutmarking(scp);
3222     return 0;
3223 }
3224 
3225 void
3226 sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
3227 {
3228     sc_vtb_t new;
3229     sc_vtb_t old;
3230 
3231     old = scp->vtb;
3232     sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
3233     if (!discard && (old.vtb_flags & VTB_VALID)) {
3234 	/* retain the current cursor position and buffer contants */
3235 	scp->cursor_oldpos = scp->cursor_pos;
3236 	/*
3237 	 * This works only if the old buffer has the same size as or larger
3238 	 * than the new one. XXX
3239 	 */
3240 	sc_vtb_copy(&old, 0, &new, 0, scp->xsize*scp->ysize);
3241 	scp->vtb = new;
3242     } else {
3243 	scp->vtb = new;
3244 	sc_vtb_destroy(&old);
3245     }
3246 
3247 #ifndef SC_NO_SYSMOUSE
3248     /* move the mouse cursor at the center of the screen */
3249     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
3250 #endif
3251 }
3252 
3253 static scr_stat
3254 *alloc_scp(sc_softc_t *sc, int vty)
3255 {
3256     scr_stat *scp;
3257 
3258     /* assert(sc_malloc) */
3259 
3260     scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
3261     init_scp(sc, vty, scp);
3262 
3263     sc_alloc_scr_buffer(scp, TRUE, TRUE);
3264     if (sc_init_emulator(scp, SC_DFLT_TERM))
3265 	sc_init_emulator(scp, "*");
3266 
3267 #ifndef SC_NO_CUTPASTE
3268     sc_alloc_cut_buffer(scp, TRUE);
3269 #endif
3270 
3271 #ifndef SC_NO_HISTORY
3272     sc_alloc_history_buffer(scp, 0, 0, TRUE);
3273 #endif
3274 
3275     return scp;
3276 }
3277 
3278 static void
3279 init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
3280 {
3281     video_info_t info;
3282 
3283     bzero(scp, sizeof(*scp));
3284 
3285     scp->index = vty;
3286     scp->sc = sc;
3287     scp->status = 0;
3288     scp->mode = sc->initial_mode;
3289     vidd_get_info(sc->adp, scp->mode, &info);
3290     if (info.vi_flags & V_INFO_GRAPHICS) {
3291 	scp->status |= GRAPHICS_MODE;
3292 	scp->xpixel = info.vi_width;
3293 	scp->ypixel = info.vi_height;
3294 	scp->xsize = info.vi_width/info.vi_cwidth;
3295 	scp->ysize = info.vi_height/info.vi_cheight;
3296 	scp->font_size = 0;
3297 	scp->font = NULL;
3298     } else {
3299 	scp->xsize = info.vi_width;
3300 	scp->ysize = info.vi_height;
3301 	scp->xpixel = scp->xsize*info.vi_cwidth;
3302 	scp->ypixel = scp->ysize*info.vi_cheight;
3303     }
3304 
3305     scp->font_size = info.vi_cheight;
3306     scp->font_width = info.vi_cwidth;
3307 #ifndef SC_NO_FONT_LOADING
3308     if (info.vi_cheight < 14)
3309 	scp->font = sc->font_8;
3310     else if (info.vi_cheight >= 16)
3311 	scp->font = sc->font_16;
3312     else
3313 	scp->font = sc->font_14;
3314 #else
3315     scp->font = NULL;
3316 #endif
3317 
3318     sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
3319 #ifndef __sparc64__
3320     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
3321 #endif
3322     scp->xoff = scp->yoff = 0;
3323     scp->xpos = scp->ypos = 0;
3324     scp->start = scp->xsize * scp->ysize - 1;
3325     scp->end = 0;
3326     scp->tsw = NULL;
3327     scp->ts = NULL;
3328     scp->rndr = NULL;
3329     scp->border = (SC_NORM_ATTR >> 4) & 0x0f;
3330     scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
3331     scp->mouse_cut_start = scp->xsize*scp->ysize;
3332     scp->mouse_cut_end = -1;
3333     scp->mouse_signal = 0;
3334     scp->mouse_pid = 0;
3335     scp->mouse_proc = NULL;
3336     scp->kbd_mode = K_XLATE;
3337     scp->bell_pitch = bios_value.bell_pitch;
3338     scp->bell_duration = BELL_DURATION;
3339     scp->status |= (bios_value.shift_state & NLKED);
3340     scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
3341     scp->pid = 0;
3342     scp->proc = NULL;
3343     scp->smode.mode = VT_AUTO;
3344     scp->history = NULL;
3345     scp->history_pos = 0;
3346     scp->history_size = 0;
3347 }
3348 
3349 int
3350 sc_init_emulator(scr_stat *scp, char *name)
3351 {
3352     sc_term_sw_t *sw;
3353     sc_rndr_sw_t *rndr;
3354     void *p;
3355     int error;
3356 
3357     if (name == NULL)	/* if no name is given, use the current emulator */
3358 	sw = scp->tsw;
3359     else		/* ...otherwise find the named emulator */
3360 	sw = sc_term_match(name);
3361     if (sw == NULL)
3362 	return EINVAL;
3363 
3364     rndr = NULL;
3365     if (strcmp(sw->te_renderer, "*") != 0) {
3366 	rndr = sc_render_match(scp, sw->te_renderer,
3367 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3368     }
3369     if (rndr == NULL) {
3370 	rndr = sc_render_match(scp, scp->sc->adp->va_name,
3371 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3372 	if (rndr == NULL)
3373 	    return ENODEV;
3374     }
3375 
3376     if (sw == scp->tsw) {
3377 	error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
3378 	scp->rndr = rndr;
3379 	scp->rndr->init(scp);
3380 	sc_clear_screen(scp);
3381 	/* assert(error == 0); */
3382 	return error;
3383     }
3384 
3385     if (sc_malloc && (sw->te_size > 0))
3386 	p = malloc(sw->te_size, M_DEVBUF, M_NOWAIT);
3387     else
3388 	p = NULL;
3389     error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
3390     if (error)
3391 	return error;
3392 
3393     if (scp->tsw)
3394 	(*scp->tsw->te_term)(scp, &scp->ts);
3395     if (scp->ts != NULL)
3396 	free(scp->ts, M_DEVBUF);
3397     scp->tsw = sw;
3398     scp->ts = p;
3399     scp->rndr = rndr;
3400     scp->rndr->init(scp);
3401 
3402     /* XXX */
3403     (*sw->te_default_attr)(scp, user_default.std_color, user_default.rev_color);
3404     sc_clear_screen(scp);
3405 
3406     return 0;
3407 }
3408 
3409 /*
3410  * scgetc(flags) - get character from keyboard.
3411  * If flags & SCGETC_CN, then avoid harmful side effects.
3412  * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
3413  * return NOKEY if there is nothing there.
3414  */
3415 static u_int
3416 scgetc(sc_softc_t *sc, u_int flags, struct sc_cnstate *sp)
3417 {
3418     scr_stat *scp;
3419 #ifndef SC_NO_HISTORY
3420     struct tty *tp;
3421 #endif
3422     u_int c;
3423     int this_scr;
3424     int f;
3425     int i;
3426 
3427     if (sc->kbd == NULL)
3428 	return NOKEY;
3429 
3430 next_code:
3431 #if 1
3432     /* I don't like this, but... XXX */
3433     if (flags & SCGETC_CN)
3434 	sccnupdate(sc->cur_scp);
3435 #endif
3436     scp = sc->cur_scp;
3437     /* first see if there is something in the keyboard port */
3438     for (;;) {
3439 	c = kbdd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
3440 	if (c == ERRKEY) {
3441 	    if (!(flags & SCGETC_CN))
3442 		sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3443 	} else if (c == NOKEY)
3444 	    return c;
3445 	else
3446 	    break;
3447     }
3448 
3449     /* make screensaver happy */
3450     if (!(c & RELKEY))
3451 	sc_touch_scrn_saver();
3452 
3453     if (!(flags & SCGETC_CN))
3454 	random_harvest_queue(&c, sizeof(c), 1, RANDOM_KEYBOARD);
3455 
3456     if (sc->kbd_open_level == 0 && scp->kbd_mode != K_XLATE)
3457 	return KEYCHAR(c);
3458 
3459     /* if scroll-lock pressed allow history browsing */
3460     if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
3461 
3462 	scp->status &= ~CURSOR_ENABLED;
3463 	sc_remove_cursor_image(scp);
3464 
3465 #ifndef SC_NO_HISTORY
3466 	if (!(scp->status & BUFFER_SAVED)) {
3467 	    scp->status |= BUFFER_SAVED;
3468 	    sc_hist_save(scp);
3469 	}
3470 	switch (c) {
3471 	/* FIXME: key codes */
3472 	case SPCLKEY | FKEY | F(49):  /* home key */
3473 	    sc_remove_cutmarking(scp);
3474 	    sc_hist_home(scp);
3475 	    goto next_code;
3476 
3477 	case SPCLKEY | FKEY | F(57):  /* end key */
3478 	    sc_remove_cutmarking(scp);
3479 	    sc_hist_end(scp);
3480 	    goto next_code;
3481 
3482 	case SPCLKEY | FKEY | F(50):  /* up arrow key */
3483 	    sc_remove_cutmarking(scp);
3484 	    if (sc_hist_up_line(scp))
3485 		if (!(flags & SCGETC_CN))
3486 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3487 	    goto next_code;
3488 
3489 	case SPCLKEY | FKEY | F(58):  /* down arrow key */
3490 	    sc_remove_cutmarking(scp);
3491 	    if (sc_hist_down_line(scp))
3492 		if (!(flags & SCGETC_CN))
3493 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3494 	    goto next_code;
3495 
3496 	case SPCLKEY | FKEY | F(51):  /* page up key */
3497 	    sc_remove_cutmarking(scp);
3498 	    for (i=0; i<scp->ysize; i++)
3499 	    if (sc_hist_up_line(scp)) {
3500 		if (!(flags & SCGETC_CN))
3501 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3502 		break;
3503 	    }
3504 	    goto next_code;
3505 
3506 	case SPCLKEY | FKEY | F(59):  /* page down key */
3507 	    sc_remove_cutmarking(scp);
3508 	    for (i=0; i<scp->ysize; i++)
3509 	    if (sc_hist_down_line(scp)) {
3510 		if (!(flags & SCGETC_CN))
3511 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3512 		break;
3513 	    }
3514 	    goto next_code;
3515 	}
3516 #endif /* SC_NO_HISTORY */
3517     }
3518 
3519     /*
3520      * Process and consume special keys here.  Return a plain char code
3521      * or a char code with the META flag or a function key code.
3522      */
3523     if (c & RELKEY) {
3524 	/* key released */
3525 	/* goto next_code */
3526     } else {
3527 	/* key pressed */
3528 	if (c & SPCLKEY) {
3529 	    c &= ~SPCLKEY;
3530 	    switch (KEYCHAR(c)) {
3531 	    /* LOCKING KEYS */
3532 	    case NLK: case CLK: case ALK:
3533 		break;
3534 	    case SLK:
3535 		(void)kbdd_ioctl(sc->kbd, KDGKBSTATE, (caddr_t)&f);
3536 		if (f & SLKED) {
3537 		    scp->status |= SLKED;
3538 		} else {
3539 		    if (scp->status & SLKED) {
3540 			scp->status &= ~SLKED;
3541 #ifndef SC_NO_HISTORY
3542 			if (scp->status & BUFFER_SAVED) {
3543 			    if (!sc_hist_restore(scp))
3544 				sc_remove_cutmarking(scp);
3545 			    scp->status &= ~BUFFER_SAVED;
3546 			    scp->status |= CURSOR_ENABLED;
3547 			    sc_draw_cursor_image(scp);
3548 			}
3549 			/* Only safe in Giant-locked context. */
3550 			tp = SC_DEV(sc, scp->index);
3551 			if (!(flags & SCGETC_CN) && tty_opened_ns(tp))
3552 			    sctty_outwakeup(tp);
3553 #endif
3554 		    }
3555 		}
3556 		break;
3557 
3558 	    case PASTE:
3559 #ifndef SC_NO_CUTPASTE
3560 		sc_mouse_paste(scp);
3561 #endif
3562 		break;
3563 
3564 	    /* NON-LOCKING KEYS */
3565 	    case NOP:
3566 	    case LSH:  case RSH:  case LCTR: case RCTR:
3567 	    case LALT: case RALT: case ASH:  case META:
3568 		break;
3569 
3570 	    case BTAB:
3571 		if (!(sc->flags & SC_SCRN_BLANKED))
3572 		    return c;
3573 		break;
3574 
3575 	    case SPSC:
3576 #ifdef DEV_SPLASH
3577 		/* force activatation/deactivation of the screen saver */
3578 		if (!(sc->flags & SC_SCRN_BLANKED)) {
3579 		    run_scrn_saver = TRUE;
3580 		    sc->scrn_time_stamp -= scrn_blank_time;
3581 		}
3582 		if (cold) {
3583 		    /*
3584 		     * While devices are being probed, the screen saver need
3585 		     * to be invoked explicitly. XXX
3586 		     */
3587 		    if (sc->flags & SC_SCRN_BLANKED) {
3588 			scsplash_stick(FALSE);
3589 			stop_scrn_saver(sc, current_saver);
3590 		    } else {
3591 			if (!ISGRAPHSC(scp)) {
3592 			    scsplash_stick(TRUE);
3593 			    (*current_saver)(sc, TRUE);
3594 			}
3595 		    }
3596 		}
3597 #endif /* DEV_SPLASH */
3598 		break;
3599 
3600 	    case RBT:
3601 #ifndef SC_DISABLE_REBOOT
3602 		if (enable_reboot && !(flags & SCGETC_CN))
3603 			shutdown_nice(0);
3604 #endif
3605 		break;
3606 
3607 	    case HALT:
3608 #ifndef SC_DISABLE_REBOOT
3609 		if (enable_reboot && !(flags & SCGETC_CN))
3610 			shutdown_nice(RB_HALT);
3611 #endif
3612 		break;
3613 
3614 	    case PDWN:
3615 #ifndef SC_DISABLE_REBOOT
3616 		if (enable_reboot && !(flags & SCGETC_CN))
3617 			shutdown_nice(RB_HALT|RB_POWEROFF);
3618 #endif
3619 		break;
3620 
3621 	    case SUSP:
3622 		power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
3623 		break;
3624 	    case STBY:
3625 		power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
3626 		break;
3627 
3628 	    case DBG:
3629 #ifndef SC_DISABLE_KDBKEY
3630 		if (enable_kdbkey)
3631 			kdb_break();
3632 #endif
3633 		break;
3634 
3635 	    case PNC:
3636 		if (enable_panic_key)
3637 			panic("Forced by the panic key");
3638 		break;
3639 
3640 	    case NEXT:
3641 		this_scr = scp->index;
3642 		for (i = (this_scr - sc->first_vty + 1)%sc->vtys;
3643 			sc->first_vty + i != this_scr;
3644 			i = (i + 1)%sc->vtys) {
3645 		    struct tty *tp = SC_DEV(sc, sc->first_vty + i);
3646 		    if (tty_opened_ns(tp)) {
3647 			sc_switch_scr(scp->sc, sc->first_vty + i);
3648 			break;
3649 		    }
3650 		}
3651 		break;
3652 
3653 	    case PREV:
3654 		this_scr = scp->index;
3655 		for (i = (this_scr - sc->first_vty + sc->vtys - 1)%sc->vtys;
3656 			sc->first_vty + i != this_scr;
3657 			i = (i + sc->vtys - 1)%sc->vtys) {
3658 		    struct tty *tp = SC_DEV(sc, sc->first_vty + i);
3659 		    if (tty_opened_ns(tp)) {
3660 			sc_switch_scr(scp->sc, sc->first_vty + i);
3661 			break;
3662 		    }
3663 		}
3664 		break;
3665 
3666 	    default:
3667 		if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
3668 		    sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
3669 		    break;
3670 		}
3671 		/* assert(c & FKEY) */
3672 		if (!(sc->flags & SC_SCRN_BLANKED))
3673 		    return c;
3674 		break;
3675 	    }
3676 	    /* goto next_code */
3677 	} else {
3678 	    /* regular keys (maybe MKEY is set) */
3679 #if !defined(SC_DISABLE_KDBKEY) && defined(KDB)
3680 	    if (enable_kdbkey)
3681 		kdb_alt_break(c, &sc->sc_altbrk);
3682 #endif
3683 	    if (!(sc->flags & SC_SCRN_BLANKED))
3684 		return c;
3685 	}
3686     }
3687 
3688     goto next_code;
3689 }
3690 
3691 static int
3692 sctty_mmap(struct tty *tp, vm_ooffset_t offset, vm_paddr_t *paddr,
3693     int nprot, vm_memattr_t *memattr)
3694 {
3695     scr_stat *scp;
3696 
3697     scp = sc_get_stat(tp);
3698     if (scp != scp->sc->cur_scp)
3699 	return -1;
3700     return vidd_mmap(scp->sc->adp, offset, paddr, nprot, memattr);
3701 }
3702 
3703 static void
3704 update_font(scr_stat *scp)
3705 {
3706 #ifndef SC_NO_FONT_LOADING
3707     /* load appropriate font */
3708     if (!(scp->status & GRAPHICS_MODE)) {
3709 	if (!(scp->status & PIXEL_MODE) && ISFONTAVAIL(scp->sc->adp->va_flags)) {
3710 	    if (scp->font_size < 14) {
3711 		if (scp->sc->fonts_loaded & FONT_8)
3712 		    sc_load_font(scp, 0, 8, 8, scp->sc->font_8, 0, 256);
3713 	    } else if (scp->font_size >= 16) {
3714 		if (scp->sc->fonts_loaded & FONT_16)
3715 		    sc_load_font(scp, 0, 16, 8, scp->sc->font_16, 0, 256);
3716 	    } else {
3717 		if (scp->sc->fonts_loaded & FONT_14)
3718 		    sc_load_font(scp, 0, 14, 8, scp->sc->font_14, 0, 256);
3719 	    }
3720 	    /*
3721 	     * FONT KLUDGE:
3722 	     * This is an interim kludge to display correct font.
3723 	     * Always use the font page #0 on the video plane 2.
3724 	     * Somehow we cannot show the font in other font pages on
3725 	     * some video cards... XXX
3726 	     */
3727 	    sc_show_font(scp, 0);
3728 	}
3729 	mark_all(scp);
3730     }
3731 #endif /* !SC_NO_FONT_LOADING */
3732 }
3733 
3734 static int
3735 save_kbd_state(scr_stat *scp)
3736 {
3737     int state;
3738     int error;
3739 
3740     error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3741     if (error == ENOIOCTL)
3742 	error = ENODEV;
3743     if (error == 0) {
3744 	scp->status &= ~LOCK_MASK;
3745 	scp->status |= state;
3746     }
3747     return error;
3748 }
3749 
3750 static int
3751 update_kbd_state(scr_stat *scp, int new_bits, int mask)
3752 {
3753     int state;
3754     int error;
3755 
3756     if (mask != LOCK_MASK) {
3757 	error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3758 	if (error == ENOIOCTL)
3759 	    error = ENODEV;
3760 	if (error)
3761 	    return error;
3762 	state &= ~mask;
3763 	state |= new_bits & mask;
3764     } else {
3765 	state = new_bits & LOCK_MASK;
3766     }
3767     error = kbdd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
3768     if (error == ENOIOCTL)
3769 	error = ENODEV;
3770     return error;
3771 }
3772 
3773 static int
3774 update_kbd_leds(scr_stat *scp, int which)
3775 {
3776     int error;
3777 
3778     which &= LOCK_MASK;
3779     error = kbdd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
3780     if (error == ENOIOCTL)
3781 	error = ENODEV;
3782     return error;
3783 }
3784 
3785 int
3786 set_mode(scr_stat *scp)
3787 {
3788     video_info_t info;
3789 
3790     /* reject unsupported mode */
3791     if (vidd_get_info(scp->sc->adp, scp->mode, &info))
3792 	return 1;
3793 
3794     /* if this vty is not currently showing, do nothing */
3795     if (scp != scp->sc->cur_scp)
3796 	return 0;
3797 
3798     /* setup video hardware for the given mode */
3799     vidd_set_mode(scp->sc->adp, scp->mode);
3800     scp->rndr->init(scp);
3801 #ifndef __sparc64__
3802     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3803 		(void *)scp->sc->adp->va_window, FALSE);
3804 #endif
3805 
3806     update_font(scp);
3807 
3808     sc_set_border(scp, scp->border);
3809     sc_set_cursor_image(scp);
3810 
3811     return 0;
3812 }
3813 
3814 void
3815 sc_set_border(scr_stat *scp, int color)
3816 {
3817     SC_VIDEO_LOCK(scp->sc);
3818     (*scp->rndr->draw_border)(scp, color);
3819     SC_VIDEO_UNLOCK(scp->sc);
3820 }
3821 
3822 #ifndef SC_NO_FONT_LOADING
3823 void
3824 sc_load_font(scr_stat *scp, int page, int size, int width, u_char *buf,
3825 	     int base, int count)
3826 {
3827     sc_softc_t *sc;
3828 
3829     sc = scp->sc;
3830     sc->font_loading_in_progress = TRUE;
3831     vidd_load_font(sc->adp, page, size, width, buf, base, count);
3832     sc->font_loading_in_progress = FALSE;
3833 }
3834 
3835 void
3836 sc_save_font(scr_stat *scp, int page, int size, int width, u_char *buf,
3837 	     int base, int count)
3838 {
3839     sc_softc_t *sc;
3840 
3841     sc = scp->sc;
3842     sc->font_loading_in_progress = TRUE;
3843     vidd_save_font(sc->adp, page, size, width, buf, base, count);
3844     sc->font_loading_in_progress = FALSE;
3845 }
3846 
3847 void
3848 sc_show_font(scr_stat *scp, int page)
3849 {
3850     vidd_show_font(scp->sc->adp, page);
3851 }
3852 #endif /* !SC_NO_FONT_LOADING */
3853 
3854 void
3855 sc_paste(scr_stat *scp, const u_char *p, int count)
3856 {
3857     struct tty *tp;
3858     u_char *rmap;
3859 
3860     tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
3861     if (!tty_opened_ns(tp))
3862 	return;
3863     rmap = scp->sc->scr_rmap;
3864     for (; count > 0; --count)
3865 	ttydisc_rint(tp, rmap[*p++], 0);
3866     ttydisc_rint_done(tp);
3867 }
3868 
3869 void
3870 sc_respond(scr_stat *scp, const u_char *p, int count, int wakeup)
3871 {
3872     struct tty *tp;
3873 
3874     tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
3875     if (!tty_opened_ns(tp))
3876 	return;
3877     ttydisc_rint_simple(tp, p, count);
3878     if (wakeup) {
3879 	/* XXX: we can't always call ttydisc_rint_done() here! */
3880 	ttydisc_rint_done(tp);
3881     }
3882 }
3883 
3884 void
3885 sc_bell(scr_stat *scp, int pitch, int duration)
3886 {
3887     if (cold || kdb_active || shutdown_in_progress || !enable_bell)
3888 	return;
3889 
3890     if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
3891 	return;
3892 
3893     if (scp->sc->flags & SC_VISUAL_BELL) {
3894 	if (scp->sc->blink_in_progress)
3895 	    return;
3896 	scp->sc->blink_in_progress = 3;
3897 	if (scp != scp->sc->cur_scp)
3898 	    scp->sc->blink_in_progress += 2;
3899 	blink_screen(scp->sc->cur_scp);
3900     } else if (duration != 0 && pitch != 0) {
3901 	if (scp != scp->sc->cur_scp)
3902 	    pitch *= 2;
3903 	sysbeep(1193182 / pitch, duration);
3904     }
3905 }
3906 
3907 static void
3908 blink_screen(void *arg)
3909 {
3910     scr_stat *scp = arg;
3911     struct tty *tp;
3912 
3913     if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
3914 	scp->sc->blink_in_progress = 0;
3915     	mark_all(scp);
3916 	tp = SC_DEV(scp->sc, scp->index);
3917 	if (tty_opened_ns(tp))
3918 	    sctty_outwakeup(tp);
3919 	if (scp->sc->delayed_next_scr)
3920 	    sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
3921     }
3922     else {
3923 	(*scp->rndr->draw)(scp, 0, scp->xsize*scp->ysize,
3924 			   scp->sc->blink_in_progress & 1);
3925 	scp->sc->blink_in_progress--;
3926 	callout_reset_sbt(&scp->sc->cblink, SBT_1S / 15, 0,
3927 	    blink_screen, scp, C_PREL(0));
3928     }
3929 }
3930 
3931 /*
3932  * Until sc_attach_unit() gets called no dev structures will be available
3933  * to store the per-screen current status.  This is the case when the
3934  * kernel is initially booting and needs access to its console.  During
3935  * this early phase of booting the console's current status is kept in
3936  * one statically defined scr_stat structure, and any pointers to the
3937  * dev structures will be NULL.
3938  */
3939 
3940 static scr_stat *
3941 sc_get_stat(struct tty *tp)
3942 {
3943 	if (tp == NULL)
3944 		return (&main_console);
3945 	return (SC_STAT(tp));
3946 }
3947 
3948 /*
3949  * Allocate active keyboard. Try to allocate "kbdmux" keyboard first, and,
3950  * if found, add all non-busy keyboards to "kbdmux". Otherwise look for
3951  * any keyboard.
3952  */
3953 
3954 static int
3955 sc_allocate_keyboard(sc_softc_t *sc, int unit)
3956 {
3957 	int		 idx0, idx;
3958 	keyboard_t	*k0, *k;
3959 	keyboard_info_t	 ki;
3960 
3961 	idx0 = kbd_allocate("kbdmux", -1, (void *)&sc->keyboard, sckbdevent, sc);
3962 	if (idx0 != -1) {
3963 		k0 = kbd_get_keyboard(idx0);
3964 
3965 		for (idx = kbd_find_keyboard2("*", -1, 0);
3966 		     idx != -1;
3967 		     idx = kbd_find_keyboard2("*", -1, idx + 1)) {
3968 			k = kbd_get_keyboard(idx);
3969 
3970 			if (idx == idx0 || KBD_IS_BUSY(k))
3971 				continue;
3972 
3973 			bzero(&ki, sizeof(ki));
3974 			strcpy(ki.kb_name, k->kb_name);
3975 			ki.kb_unit = k->kb_unit;
3976 
3977 			(void)kbdd_ioctl(k0, KBADDKBD, (caddr_t) &ki);
3978 		}
3979 	} else
3980 		idx0 = kbd_allocate("*", unit, (void *)&sc->keyboard, sckbdevent, sc);
3981 
3982 	return (idx0);
3983 }
3984