xref: /dragonfly/sys/dev/misc/syscons/syscons.c (revision c03f08f3)
1 /*-
2  * Copyright (c) 1992-1998 S�ren Schmidt
3  * All rights reserved.
4  *
5  * This code is derived from software contributed to The DragonFly Project
6  * by Sascha Wildner <saw@online.de>
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer,
13  *    without modification, immediately at the beginning of the file.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. The name of the author may not be used to endorse or promote products
18  *    derived from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  *
31  * $FreeBSD: /usr/local/www/cvsroot/FreeBSD/src/sys/dev/syscons/syscons.c,v 1.336.2.17 2004/03/25 08:41:09 ru Exp $
32  * $DragonFly: src/sys/dev/misc/syscons/syscons.c,v 1.33 2007/08/19 11:39:11 swildner Exp $
33  */
34 
35 #include "use_splash.h"
36 #include "opt_syscons.h"
37 #include "opt_ddb.h"
38 #include "use_apm.h"
39 
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/eventhandler.h>
43 #include <sys/reboot.h>
44 #include <sys/conf.h>
45 #include <sys/proc.h>
46 #include <sys/signalvar.h>
47 #include <sys/sysctl.h>
48 #include <sys/tty.h>
49 #include <sys/kernel.h>
50 #include <sys/cons.h>
51 #include <sys/random.h>
52 #include <sys/thread2.h>
53 
54 #include <machine/clock.h>
55 #include <machine/console.h>
56 #include <machine/psl.h>
57 #include <machine/pc/display.h>
58 #include <machine/apm_bios.h>
59 #include <machine/frame.h>
60 
61 #include <dev/misc/kbd/kbdreg.h>
62 #include <dev/video/fb/fbreg.h>
63 #include <dev/video/fb/splashreg.h>
64 #include "syscons.h"
65 
66 #define COLD 0
67 #define WARM 1
68 
69 #define DEFAULT_BLANKTIME	(5*60)		/* 5 minutes */
70 #define MAX_BLANKTIME		(7*24*60*60)	/* 7 days!? */
71 
72 #define KEYCODE_BS		0x0e		/* "<-- Backspace" key, XXX */
73 
74 MALLOC_DEFINE(M_SYSCONS, "syscons", "Syscons");
75 
76 typedef struct default_attr {
77 	int		std_color;		/* normal hardware color */
78 	int		rev_color;		/* reverse hardware color */
79 } default_attr;
80 
81 static default_attr user_default = {
82     SC_NORM_ATTR,
83     SC_NORM_REV_ATTR,
84 };
85 
86 static default_attr kernel_default = {
87     SC_KERNEL_CONS_ATTR,
88     SC_KERNEL_CONS_REV_ATTR,
89 };
90 
91 static	int		sc_console_unit = -1;
92 static  scr_stat    	*sc_console;
93 static	struct tty	*sc_console_tty;
94 static	void		*kernel_console_ts;
95 
96 static  char        	init_done = COLD;
97 static  char		shutdown_in_progress = FALSE;
98 static	char		sc_malloc = FALSE;
99 
100 static	int		saver_mode = CONS_NO_SAVER; /* LKM/user saver */
101 static	int		run_scrn_saver = FALSE;	/* should run the saver? */
102 static	long        	scrn_blank_time = 0;    /* screen saver timeout value */
103 #if NSPLASH > 0
104 static	int     	scrn_blanked;		/* # of blanked screen */
105 static	int		sticky_splash = FALSE;
106 
107 static	void		none_saver(sc_softc_t *sc, int blank) { }
108 static	void		(*current_saver)(sc_softc_t *, int) = none_saver;
109 #endif
110 
111 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
112 #include "font.h"
113 #endif
114 
115 static	bios_values_t	bios_value;
116 
117 static	int		enable_panic_key;
118 SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
119 	   0, "");
120 
121 #define SC_CONSOLECTL	255
122 
123 #define VIRTUAL_TTY(sc, x) (SC_DEV((sc), (x)) != NULL ?	\
124 	SC_DEV((sc), (x))->si_tty : NULL)
125 #define ISTTYOPEN(tp)	((tp) && ((tp)->t_state & TS_ISOPEN))
126 
127 static	int		debugger;
128 
129 /* prototypes */
130 static int scvidprobe(int unit, int flags, int cons);
131 static int sckbdprobe(int unit, int flags, int cons);
132 static void scmeminit(void *arg);
133 static int scdevtounit(cdev_t dev);
134 static kbd_callback_func_t sckbdevent;
135 static int scparam(struct tty *tp, struct termios *t);
136 static void scstart(struct tty *tp);
137 static void scinit(int unit, int flags);
138 static void scterm(int unit, int flags);
139 static void scshutdown(void *arg, int howto);
140 static u_int scgetc(sc_softc_t *sc, u_int flags);
141 #define SCGETC_CN	1
142 #define SCGETC_NONBLOCK	2
143 static int sccngetch(int flags);
144 static void sccnupdate(scr_stat *scp);
145 static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
146 static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
147 static timeout_t scrn_timer;
148 static int and_region(int *s1, int *e1, int s2, int e2);
149 static void scrn_update(scr_stat *scp, int show_cursor);
150 
151 #if NSPLASH > 0
152 static int scsplash_callback(int event, void *arg);
153 static void scsplash_saver(sc_softc_t *sc, int show);
154 static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
155 static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
156 static int set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border);
157 static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
158 static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
159 static int wait_scrn_saver_stop(sc_softc_t *sc);
160 #define scsplash_stick(stick)		(sticky_splash = (stick))
161 #else /* !NSPLASH */
162 #define scsplash_stick(stick)
163 #endif /* NSPLASH */
164 
165 static void do_switch_scr(sc_softc_t *sc);
166 static int vt_proc_alive(scr_stat *scp);
167 static int signal_vt_rel(scr_stat *scp);
168 static int signal_vt_acq(scr_stat *scp);
169 static int finish_vt_rel(scr_stat *scp, int release);
170 static int finish_vt_acq(scr_stat *scp);
171 static void exchange_scr(sc_softc_t *sc);
172 static void update_cursor_image(scr_stat *scp);
173 static int save_kbd_state(scr_stat *scp);
174 static int update_kbd_state(scr_stat *scp, int state, int mask);
175 static int update_kbd_leds(scr_stat *scp, int which);
176 static timeout_t blink_screen;
177 
178 #define	CDEV_MAJOR	12
179 
180 static cn_probe_t	sccnprobe;
181 static cn_init_t	sccninit;
182 static cn_init_t	sccninit_fini;
183 static cn_getc_t	sccngetc;
184 static cn_checkc_t	sccncheckc;
185 static cn_putc_t	sccnputc;
186 static cn_dbctl_t	sccndbctl;
187 static cn_term_t	sccnterm;
188 
189 CONS_DRIVER(sc, sccnprobe, sccninit, sccninit_fini, sccnterm,
190 	    sccngetc, sccncheckc, sccnputc, sccndbctl);
191 
192 static	d_open_t	scopen;
193 static	d_close_t	scclose;
194 static	d_read_t	scread;
195 static	d_ioctl_t	scioctl;
196 static	d_mmap_t	scmmap;
197 
198 static struct dev_ops sc_ops = {
199 	{ "sc", CDEV_MAJOR, D_TTY | D_KQFILTER },
200 	.d_open =	scopen,
201 	.d_close =	scclose,
202 	.d_read =	scread,
203 	.d_write =	ttywrite,
204 	.d_ioctl =	scioctl,
205 	.d_poll =	ttypoll,
206 	.d_mmap =	scmmap,
207 	.d_kqfilter =	ttykqfilter
208 };
209 
210 int
211 sc_probe_unit(int unit, int flags)
212 {
213     if (!scvidprobe(unit, flags, FALSE)) {
214 	if (bootverbose)
215 	    kprintf("sc%d: no video adapter found.\n", unit);
216 	return ENXIO;
217     }
218 
219     /* syscons will be attached even when there is no keyboard */
220     sckbdprobe(unit, flags, FALSE);
221 
222     return 0;
223 }
224 
225 /* probe video adapters, return TRUE if found */
226 static int
227 scvidprobe(int unit, int flags, int cons)
228 {
229     /*
230      * Access the video adapter driver through the back door!
231      * Video adapter drivers need to be configured before syscons.
232      * However, when syscons is being probed as the low-level console,
233      * they have not been initialized yet.  We force them to initialize
234      * themselves here. XXX
235      */
236     vid_configure(cons ? VIO_PROBE_ONLY : 0);
237 
238     return (vid_find_adapter("*", unit) >= 0);
239 }
240 
241 /* probe the keyboard, return TRUE if found */
242 static int
243 sckbdprobe(int unit, int flags, int cons)
244 {
245     /* access the keyboard driver through the backdoor! */
246     kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
247 
248     return (kbd_find_keyboard("*", unit) >= 0);
249 }
250 
251 static char *
252 adapter_name(video_adapter_t *adp)
253 {
254     static struct {
255 	int type;
256 	char *name[2];
257     } names[] = {
258 	{ KD_MONO,	{ "MDA",	"MDA" } },
259 	{ KD_HERCULES,	{ "Hercules",	"Hercules" } },
260 	{ KD_CGA,	{ "CGA",	"CGA" } },
261 	{ KD_EGA,	{ "EGA",	"EGA (mono)" } },
262 	{ KD_VGA,	{ "VGA",	"VGA (mono)" } },
263 	{ KD_TGA,	{ "TGA",	"TGA" } },
264 	{ -1,		{ "Unknown",	"Unknown" } },
265     };
266     int i;
267 
268     for (i = 0; names[i].type != -1; ++i)
269 	if (names[i].type == adp->va_type)
270 	    break;
271     return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
272 }
273 
274 int
275 sc_attach_unit(int unit, int flags)
276 {
277     sc_softc_t *sc;
278     scr_stat *scp;
279 #ifdef SC_PIXEL_MODE
280     video_info_t info;
281 #endif
282     int vc;
283     cdev_t dev;
284 
285     flags &= ~SC_KERNEL_CONSOLE;
286 
287     if (sc_console_unit == unit) {
288 	/*
289 	 * If this unit is being used as the system console, we need to
290 	 * adjust some variables and buffers before and after scinit().
291 	 */
292 	/* assert(sc_console != NULL) */
293 	flags |= SC_KERNEL_CONSOLE;
294 	scmeminit(NULL);
295 
296 	scinit(unit, flags);
297 
298 	if (sc_console->tsw->te_size > 0) {
299 	    /* assert(sc_console->ts != NULL); */
300 	    kernel_console_ts = sc_console->ts;
301 	    sc_console->ts = kmalloc(sc_console->tsw->te_size,
302 				    M_SYSCONS, M_WAITOK);
303 	    bcopy(kernel_console_ts, sc_console->ts, sc_console->tsw->te_size);
304     	    (*sc_console->tsw->te_default_attr)(sc_console,
305 						user_default.std_color,
306 						user_default.rev_color);
307 	}
308     } else {
309 	scinit(unit, flags);
310     }
311 
312     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
313 
314     /*
315      * If this is the console we couldn't setup sc->dev before because
316      * malloc wasn't working.  Set it up now.
317      */
318     if (flags & SC_KERNEL_CONSOLE) {
319 	KKASSERT(sc->dev == NULL);
320 	sc->dev = kmalloc(sizeof(cdev_t)*sc->vtys, M_SYSCONS, M_WAITOK|M_ZERO);
321 	sc->dev[0] = make_dev(&sc_ops, sc_console_unit*MAXCONS, UID_ROOT,
322 			      GID_WHEEL, 0600,
323 			      "ttyv%r", sc_console_unit*MAXCONS);
324 	sc->dev[0]->si_tty = ttymalloc(sc->dev[0]->si_tty);
325 	sc->dev[0]->si_drv1 = sc_console;
326     }
327 
328     /*
329      * Finish up the standard attach
330      */
331     sc->config = flags;
332     callout_init(&sc->scrn_timer_ch);
333     scp = SC_STAT(sc->dev[0]);
334     if (sc_console == NULL)	/* sc_console_unit < 0 */
335 	sc_console = scp;
336 
337 #ifdef SC_PIXEL_MODE
338     if ((sc->config & SC_VESA800X600)
339 	&& ((*vidsw[sc->adapter]->get_info)(sc->adp, M_VESA_800x600, &info) == 0)) {
340 #if NSPLASH > 0
341 	if (sc->flags & SC_SPLASH_SCRN)
342 	    splash_term(sc->adp);
343 #endif
344 	sc_set_graphics_mode(scp, NULL, M_VESA_800x600);
345 	sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
346 	sc->initial_mode = M_VESA_800x600;
347 #if NSPLASH > 0
348 	/* put up the splash again! */
349 	if (sc->flags & SC_SPLASH_SCRN)
350     	    splash_init(sc->adp, scsplash_callback, sc);
351 #endif
352     }
353 #endif /* SC_PIXEL_MODE */
354 
355     /* initialize cursor */
356     if (!ISGRAPHSC(scp))
357     	update_cursor_image(scp);
358 
359     /* get screen update going */
360     scrn_timer(sc);
361 
362     /* set up the keyboard */
363     kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
364     update_kbd_state(scp, scp->status, LOCK_MASK);
365 
366     kprintf("sc%d: %s <%d virtual consoles, flags=0x%x>\n",
367 	   unit, adapter_name(sc->adp), sc->vtys, sc->config);
368     if (bootverbose) {
369 	kprintf("sc%d:", unit);
370     	if (sc->adapter >= 0)
371 	    kprintf(" fb%d", sc->adapter);
372 	if (sc->keyboard >= 0)
373 	    kprintf(", kbd%d", sc->keyboard);
374 	if (scp->tsw)
375 	    kprintf(", terminal emulator: %s (%s)",
376 		   scp->tsw->te_name, scp->tsw->te_desc);
377 	kprintf("\n");
378     }
379 
380     /* register a shutdown callback for the kernel console */
381     if (sc_console_unit == unit)
382 	EVENTHANDLER_REGISTER(shutdown_pre_sync, scshutdown,
383 			      (void *)(uintptr_t)unit, SHUTDOWN_PRI_DEFAULT);
384 
385     /*
386      * create devices.  dev_ops_add() must be called to make devices under
387      * this major number available to userland.
388      */
389     dev_ops_add(&sc_ops, ~(MAXCONS - 1), unit * MAXCONS);
390 
391     for (vc = 0; vc < sc->vtys; vc++) {
392 	dev = make_dev(&sc_ops, vc + unit * MAXCONS,
393 	    UID_ROOT, GID_WHEEL, 0600, "ttyv%r", vc + unit * MAXCONS);
394 	sc->dev[vc] = dev;
395 	/*
396 	 * The first vty already has struct tty and scr_stat initialized
397 	 * in scinit().  The other vtys will have these structs when
398 	 * first opened.
399 	 */
400     }
401 
402     dev_ops_add(&sc_ops, -1, SC_CONSOLECTL);	/* XXX */
403     dev = make_dev(&sc_ops, SC_CONSOLECTL,
404 		   UID_ROOT, GID_WHEEL, 0600, "consolectl");
405     dev->si_tty = sc_console_tty = ttymalloc(sc_console_tty);
406     dev->si_drv1 = sc_console;
407 
408     return 0;
409 }
410 
411 static void
412 scmeminit(void *arg)
413 {
414     if (sc_malloc)
415 	return;
416     sc_malloc = TRUE;
417 
418     /*
419      * As soon as malloc() becomes functional, we had better allocate
420      * various buffers for the kernel console.
421      */
422 
423     if (sc_console_unit < 0)	/* sc_console == NULL */
424 	return;
425 
426     /* copy the temporary buffer to the final buffer */
427     sc_alloc_scr_buffer(sc_console, TRUE, FALSE);
428 
429 #ifndef SC_NO_CUTPASTE
430     sc_alloc_cut_buffer(sc_console, TRUE);
431 #endif
432 
433 #ifndef SC_NO_HISTORY
434     /* initialize history buffer & pointers */
435     sc_alloc_history_buffer(sc_console, 0, 0, TRUE);
436 #endif
437 }
438 
439 SYSINIT(sc_mem, SI_BOOT1_POST, SI_ORDER_ANY, scmeminit, NULL);
440 
441 static int
442 scdevtounit(cdev_t dev)
443 {
444     int vty = SC_VTY(dev);
445 
446     if (vty == SC_CONSOLECTL)
447 	return ((sc_console != NULL) ? sc_console->sc->unit : -1);
448     else if ((vty < 0) || (vty >= MAXCONS*sc_max_unit()))
449 	return -1;
450     else
451 	return vty/MAXCONS;
452 }
453 
454 int
455 scopen(struct dev_open_args *ap)
456 {
457     cdev_t dev = ap->a_head.a_dev;
458     int unit = scdevtounit(dev);
459     sc_softc_t *sc;
460     struct tty *tp;
461     scr_stat *scp;
462     keyarg_t key;
463     int error;
464 
465     DPRINTF(5, ("scopen: dev:%d,%d, unit:%d, vty:%d\n",
466 		major(dev), minor(dev), unit, SC_VTY(dev)));
467 
468     sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
469     if (sc == NULL)
470 	return ENXIO;
471 
472     tp = dev->si_tty = ttymalloc(dev->si_tty);
473     tp->t_oproc = scstart;
474     tp->t_param = scparam;
475     tp->t_stop = nottystop;
476     tp->t_dev = dev;
477     if (!ISTTYOPEN(tp)) {
478 	ttychars(tp);
479         /* Use the current setting of the <-- key as default VERASE. */
480         /* If the Delete key is preferable, an stty is necessary     */
481 	if (sc->kbd != NULL) {
482 	    key.keynum = KEYCODE_BS;
483 	    kbd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
484             tp->t_cc[VERASE] = key.key.map[0];
485 	}
486 	tp->t_iflag = TTYDEF_IFLAG;
487 	tp->t_oflag = TTYDEF_OFLAG;
488 	tp->t_cflag = TTYDEF_CFLAG;
489 	tp->t_lflag = TTYDEF_LFLAG;
490 	tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
491 	scparam(tp, &tp->t_termios);
492 	(*linesw[tp->t_line].l_modem)(tp, 1);
493     }
494     else
495 	if (tp->t_state & TS_XCLUDE && suser_cred(ap->a_cred, 0))
496 	    return(EBUSY);
497 
498     error = (*linesw[tp->t_line].l_open)(dev, tp);
499 
500     scp = SC_STAT(dev);
501     if (scp == NULL) {
502 	scp = dev->si_drv1 = alloc_scp(sc, SC_VTY(dev));
503 	if (ISGRAPHSC(scp))
504 	    sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
505     }
506     if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
507 	tp->t_winsize.ws_col = scp->xsize;
508 	tp->t_winsize.ws_row = scp->ysize;
509     }
510 
511     return error;
512 }
513 
514 int
515 scclose(struct dev_close_args *ap)
516 {
517     cdev_t dev = ap->a_head.a_dev;
518     struct tty *tp = dev->si_tty;
519     scr_stat *scp;
520 
521     crit_enter();
522     if (SC_VTY(dev) != SC_CONSOLECTL) {
523 	scp = SC_STAT(tp->t_dev);
524 	/* were we in the middle of the VT switching process? */
525 	DPRINTF(5, ("sc%d: scclose(), ", scp->sc->unit));
526 	if ((scp == scp->sc->cur_scp) && (scp->sc->unit == sc_console_unit))
527 	    cons_unavail = FALSE;
528 	/*
529 	 * note: must be called from a critical section because finish_vt_rel
530 	 * will call do_switch_scr which releases it temporarily
531 	 */
532 	if (finish_vt_rel(scp, TRUE) == 0)	/* force release */
533 	    DPRINTF(5, ("reset WAIT_REL, "));
534 	if (finish_vt_acq(scp) == 0)		/* force acknowledge */
535 	    DPRINTF(5, ("reset WAIT_ACQ, "));
536 #if not_yet_done
537 	if (scp == &main_console) {
538 	    scp->pid = 0;
539 	    scp->proc = NULL;
540 	    scp->smode.mode = VT_AUTO;
541 	}
542 	else {
543 	    sc_vtb_destroy(&scp->vtb);
544 	    sc_vtb_destroy(&scp->scr);
545 	    sc_free_history_buffer(scp, scp->ysize);
546 	    SC_STAT(dev) = NULL;
547 	    kfree(scp, M_SYSCONS);
548 	}
549 #else
550 	scp->pid = 0;
551 	scp->proc = NULL;
552 	scp->smode.mode = VT_AUTO;
553 #endif
554 	scp->kbd_mode = K_XLATE;
555 	if (scp == scp->sc->cur_scp)
556 	    kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
557 	DPRINTF(5, ("done.\n"));
558     }
559     (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
560     ttyclose(tp);
561     crit_exit();
562     return(0);
563 }
564 
565 int
566 scread(struct dev_read_args *ap)
567 {
568     sc_touch_scrn_saver();
569     return (ttyread(ap));
570 }
571 
572 static int
573 sckbdevent(keyboard_t *thiskbd, int event, void *arg)
574 {
575     sc_softc_t *sc;
576     struct tty *cur_tty;
577     int c;
578     size_t len;
579     u_char *cp;
580 
581     sc = (sc_softc_t *)arg;
582     /* assert(thiskbd == sc->kbd) */
583 
584     switch (event) {
585     case KBDIO_KEYINPUT:
586 	break;
587     case KBDIO_UNLOADING:
588 	sc->kbd = NULL;
589 	sc->keyboard = -1;
590 	kbd_release(thiskbd, (void *)&sc->keyboard);
591 	return 0;
592     default:
593 	return EINVAL;
594     }
595 
596     /*
597      * Loop while there is still input to get from the keyboard.
598      * I don't think this is nessesary, and it doesn't fix
599      * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
600      */
601     while ((c = scgetc(sc, SCGETC_NONBLOCK)) != NOKEY) {
602 
603 	cur_tty = VIRTUAL_TTY(sc, sc->cur_scp->index);
604 	if (!ISTTYOPEN(cur_tty)) {
605 	    cur_tty = sc_console_tty;
606 	    if (!ISTTYOPEN(cur_tty))
607 		continue;
608 	}
609 
610 	if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
611 	    continue;
612 
613 	switch (KEYFLAGS(c)) {
614 	case 0x0000: /* normal key */
615 	    (*linesw[cur_tty->t_line].l_rint)(KEYCHAR(c), cur_tty);
616 	    break;
617 	case FKEY:  /* function key, return string */
618 	    cp = kbd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
619 	    if (cp != NULL) {
620 	    	while (len-- >  0)
621 		    (*linesw[cur_tty->t_line].l_rint)(*cp++, cur_tty);
622 	    }
623 	    break;
624 	case MKEY:  /* meta is active, prepend ESC */
625 	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
626 	    (*linesw[cur_tty->t_line].l_rint)(KEYCHAR(c), cur_tty);
627 	    break;
628 	case BKEY:  /* backtab fixed sequence (esc [ Z) */
629 	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
630 	    (*linesw[cur_tty->t_line].l_rint)('[', cur_tty);
631 	    (*linesw[cur_tty->t_line].l_rint)('Z', cur_tty);
632 	    break;
633 	}
634     }
635 
636     sc->cur_scp->status |= MOUSE_HIDDEN;
637 
638     return 0;
639 }
640 
641 static int
642 scparam(struct tty *tp, struct termios *t)
643 {
644     tp->t_ispeed = t->c_ispeed;
645     tp->t_ospeed = t->c_ospeed;
646     tp->t_cflag = t->c_cflag;
647     return 0;
648 }
649 
650 int
651 scioctl(struct dev_ioctl_args *ap)
652 {
653     cdev_t dev = ap->a_head.a_dev;
654     u_long cmd = ap->a_cmd;
655     caddr_t data = ap->a_data;
656     int flag = ap->a_fflag;
657     int error;
658     int i;
659     struct tty *tp;
660     sc_softc_t *sc;
661     scr_stat *scp;
662 
663     tp = dev->si_tty;
664 
665     error = sc_vid_ioctl(tp, cmd, data, flag);
666     if (error != ENOIOCTL)
667 	return error;
668 
669 #ifndef SC_NO_HISTORY
670     error = sc_hist_ioctl(tp, cmd, data, flag);
671     if (error != ENOIOCTL)
672 	return error;
673 #endif
674 
675 #ifndef SC_NO_SYSMOUSE
676     error = sc_mouse_ioctl(tp, cmd, data, flag);
677     if (error != ENOIOCTL)
678 	return error;
679 #endif
680 
681     scp = SC_STAT(tp->t_dev);
682     /* assert(scp != NULL) */
683     /* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
684     sc = scp->sc;
685 
686     if (scp->tsw) {
687 	error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, flag);
688 	if (error != ENOIOCTL)
689 	    return error;
690     }
691 
692     switch (cmd) {  		/* process console hardware related ioctl's */
693 
694     case GIO_ATTR:      	/* get current attributes */
695 	/* this ioctl is not processed here, but in the terminal emulator */
696 	return ENOTTY;
697 
698     case GIO_COLOR:     	/* is this a color console ? */
699 	*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
700 	return 0;
701 
702     case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
703 	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
704             return EINVAL;
705 	crit_enter();
706 	scrn_blank_time = *(int *)data;
707 	run_scrn_saver = (scrn_blank_time != 0);
708 	crit_exit();
709 	return 0;
710 
711     case CONS_CURSORTYPE:   	/* set cursor type blink/noblink */
712 	crit_enter();
713 	if (!ISGRAPHSC(sc->cur_scp))
714 	    sc_remove_cursor_image(sc->cur_scp);
715 	if ((*(int*)data) & 0x01)
716 	    sc->flags |= SC_BLINK_CURSOR;
717 	else
718 	    sc->flags &= ~SC_BLINK_CURSOR;
719 	if ((*(int*)data) & 0x02) {
720 	    sc->flags |= SC_CHAR_CURSOR;
721 	} else
722 	    sc->flags &= ~SC_CHAR_CURSOR;
723 	/*
724 	 * The cursor shape is global property; all virtual consoles
725 	 * are affected. Update the cursor in the current console...
726 	 */
727 	if (!ISGRAPHSC(sc->cur_scp)) {
728 	    sc_set_cursor_image(sc->cur_scp);
729 	    sc_draw_cursor_image(sc->cur_scp);
730 	}
731 	crit_exit();
732 	return 0;
733 
734     case CONS_BELLTYPE: 	/* set bell type sound/visual */
735 	if ((*(int *)data) & 0x01)
736 	    sc->flags |= SC_VISUAL_BELL;
737 	else
738 	    sc->flags &= ~SC_VISUAL_BELL;
739 	if ((*(int *)data) & 0x02)
740 	    sc->flags |= SC_QUIET_BELL;
741 	else
742 	    sc->flags &= ~SC_QUIET_BELL;
743 	return 0;
744 
745     case CONS_GETINFO:  	/* get current (virtual) console info */
746     {
747 	vid_info_t *ptr = (vid_info_t*)data;
748 	if (ptr->size == sizeof(struct vid_info)) {
749 	    ptr->m_num = sc->cur_scp->index;
750 	    ptr->font_size = scp->font_size;
751 	    ptr->mv_col = scp->xpos;
752 	    ptr->mv_row = scp->ypos;
753 	    ptr->mv_csz = scp->xsize;
754 	    ptr->mv_rsz = scp->ysize;
755 	    /*
756 	     * The following fields are filled by the terminal emulator. XXX
757 	     *
758 	     * ptr->mv_norm.fore
759 	     * ptr->mv_norm.back
760 	     * ptr->mv_rev.fore
761 	     * ptr->mv_rev.back
762 	     */
763 	    ptr->mv_grfc.fore = 0;      /* not supported */
764 	    ptr->mv_grfc.back = 0;      /* not supported */
765 	    ptr->mv_ovscan = scp->border;
766 	    if (scp == sc->cur_scp)
767 		save_kbd_state(scp);
768 	    ptr->mk_keylock = scp->status & LOCK_MASK;
769 	    return 0;
770 	}
771 	return EINVAL;
772     }
773 
774     case CONS_GETVERS:  	/* get version number */
775 	*(int*)data = 0x200;    /* version 2.0 */
776 	return 0;
777 
778     case CONS_IDLE:		/* see if the screen has been idle */
779 	/*
780 	 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
781 	 * the user process may have been writing something on the
782 	 * screen and syscons is not aware of it. Declare the screen
783 	 * is NOT idle if it is in one of these modes. But there is
784 	 * an exception to it; if a screen saver is running in the
785 	 * graphics mode in the current screen, we should say that the
786 	 * screen has been idle.
787 	 */
788 	*(int *)data = (sc->flags & SC_SCRN_IDLE)
789 		       && (!ISGRAPHSC(sc->cur_scp)
790 			   || (sc->cur_scp->status & SAVER_RUNNING));
791 	return 0;
792 
793     case CONS_SAVERMODE:	/* set saver mode */
794 	switch(*(int *)data) {
795 	case CONS_NO_SAVER:
796 	case CONS_USR_SAVER:
797 	    /* if a LKM screen saver is running, stop it first. */
798 	    scsplash_stick(FALSE);
799 	    saver_mode = *(int *)data;
800 	    crit_enter();
801 #if NSPLASH > 0
802 	    if ((error = wait_scrn_saver_stop(NULL))) {
803 		crit_exit();
804 		return error;
805 	    }
806 #endif /* NSPLASH */
807 	    run_scrn_saver = TRUE;
808 	    if (saver_mode == CONS_USR_SAVER)
809 		scp->status |= SAVER_RUNNING;
810 	    else
811 		scp->status &= ~SAVER_RUNNING;
812 	    scsplash_stick(TRUE);
813 	    crit_exit();
814 	    break;
815 	case CONS_LKM_SAVER:
816 	    crit_enter();
817 	    if ((saver_mode == CONS_USR_SAVER) && (scp->status & SAVER_RUNNING))
818 		scp->status &= ~SAVER_RUNNING;
819 	    saver_mode = *(int *)data;
820 	    crit_exit();
821 	    break;
822 	default:
823 	    return EINVAL;
824 	}
825 	return 0;
826 
827     case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
828 	/*
829 	 * Note that this ioctl does not guarantee the screen saver
830 	 * actually starts or stops. It merely attempts to do so...
831 	 */
832 	crit_enter();
833 	run_scrn_saver = (*(int *)data != 0);
834 	if (run_scrn_saver)
835 	    sc->scrn_time_stamp -= scrn_blank_time;
836 	crit_exit();
837 	return 0;
838 
839     case CONS_SCRSHOT:		/* get a screen shot */
840     {
841 	scrshot_t *ptr = (scrshot_t*)data;
842 	crit_enter();
843 	if (ISGRAPHSC(scp)) {
844 	    crit_exit();
845 	    return EOPNOTSUPP;
846 	}
847 	if (scp->xsize != ptr->xsize || scp->ysize != ptr->ysize) {
848 	    crit_exit();
849 	    return EINVAL;
850 	}
851 	copyout ((void*)scp->vtb.vtb_buffer, ptr->buf,
852 		 ptr->xsize * ptr->ysize * sizeof(uint16_t));
853 	crit_exit();
854 	return 0;
855     }
856 
857     case VT_SETMODE:    	/* set screen switcher mode */
858     {
859 	struct vt_mode *mode;
860 
861 	mode = (struct vt_mode *)data;
862 	DPRINTF(5, ("sc%d: VT_SETMODE ", sc->unit));
863 	if (scp->smode.mode == VT_PROCESS) {
864     	    if (scp->proc == pfind(scp->pid) && scp->proc != curproc) {
865 		DPRINTF(5, ("error EPERM\n"));
866 		return EPERM;
867 	    }
868 	}
869 	crit_enter();
870 	if (mode->mode == VT_AUTO) {
871 	    scp->smode.mode = VT_AUTO;
872 	    scp->proc = NULL;
873 	    scp->pid = 0;
874 	    DPRINTF(5, ("VT_AUTO, "));
875 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
876 		cons_unavail = FALSE;
877 	    /*
878 	     * note: must be called from a critical section because
879 	     * finish_vt_rel will call do_switch_scr which releases it
880 	     * temporarily.
881 	     */
882 	    if (finish_vt_rel(scp, TRUE) == 0)
883 		DPRINTF(5, ("reset WAIT_REL, "));
884 	    if (finish_vt_acq(scp) == 0)
885 		DPRINTF(5, ("reset WAIT_ACQ, "));
886 	} else {
887 	    if (!ISSIGVALID(mode->relsig) || !ISSIGVALID(mode->acqsig)
888 		|| !ISSIGVALID(mode->frsig)) {
889 		crit_exit();
890 		DPRINTF(5, ("error EINVAL\n"));
891 		return EINVAL;
892 	    }
893 	    DPRINTF(5, ("VT_PROCESS %d, ", curproc->p_pid));
894 	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
895 	    scp->proc = curproc;
896 	    scp->pid = scp->proc->p_pid;
897 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
898 		cons_unavail = TRUE;
899 	}
900 	crit_exit();
901 	DPRINTF(5, ("\n"));
902 	return 0;
903     }
904 
905     case VT_GETMODE:    	/* get screen switcher mode */
906 	bcopy(&scp->smode, data, sizeof(struct vt_mode));
907 	return 0;
908 
909     case VT_RELDISP:    	/* screen switcher ioctl */
910 	crit_enter();
911 	/*
912 	 * This must be the current vty which is in the VT_PROCESS
913 	 * switching mode...
914 	 */
915 	if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
916 	    crit_exit();
917 	    return EINVAL;
918 	}
919 	/* ...and this process is controlling it. */
920 	if (scp->proc != curproc) {
921 	    crit_exit();
922 	    return EPERM;
923 	}
924 	error = EINVAL;
925 	switch(*(int *)data) {
926 	case VT_FALSE:  	/* user refuses to release screen, abort */
927 	    /*
928 	     * note: must be called from a critical section because
929 	     * finish_vt_rel will call do_switch_scr which releases it
930 	     * temporarily.
931 	     */
932 	    if ((error = finish_vt_rel(scp, FALSE)) == 0)
933 		DPRINTF(5, ("sc%d: VT_FALSE\n", sc->unit));
934 	    break;
935 	case VT_TRUE:   	/* user has released screen, go on */
936 	    /*
937 	     * note: must be called from a critical section because
938 	     * finish_vt_rel will call do_switch_scr which releases it
939 	     * temporarily.
940 	     */
941 	    if ((error = finish_vt_rel(scp, TRUE)) == 0)
942 		DPRINTF(5, ("sc%d: VT_TRUE\n", sc->unit));
943 	    break;
944 	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
945 	    if ((error = finish_vt_acq(scp)) == 0)
946 		DPRINTF(5, ("sc%d: VT_ACKACQ\n", sc->unit));
947 	    break;
948 	default:
949 	    break;
950 	}
951 	crit_exit();
952 	return error;
953 
954     case VT_OPENQRY:    	/* return free virtual console */
955 	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
956 	    tp = VIRTUAL_TTY(sc, i);
957 	    if (!ISTTYOPEN(tp)) {
958 		*(int *)data = i + 1;
959 		return 0;
960 	    }
961 	}
962 	return EINVAL;
963 
964     case VT_ACTIVATE:   	/* switch to screen *data */
965 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
966 	crit_enter();
967 	sc_clean_up(sc->cur_scp);
968 	crit_exit();
969 	return sc_switch_scr(sc, i);
970 
971     case VT_WAITACTIVE: 	/* wait for switch to occur */
972 	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
973 	if ((i < sc->first_vty) || (i >= sc->first_vty + sc->vtys))
974 	    return EINVAL;
975 	crit_enter();
976 	error = sc_clean_up(sc->cur_scp);
977 	crit_exit();
978 	if (error)
979 	    return error;
980 	scp = SC_STAT(SC_DEV(sc, i));
981 	if (scp == scp->sc->cur_scp)
982 	    return 0;
983 	while ((error=tsleep((caddr_t)&scp->smode, PCATCH,
984 			     "waitvt", 0)) == ERESTART) ;
985 	return error;
986 
987     case VT_GETACTIVE:		/* get active vty # */
988 	*(int *)data = sc->cur_scp->index + 1;
989 	return 0;
990 
991     case VT_GETINDEX:		/* get this vty # */
992 	*(int *)data = scp->index + 1;
993 	return 0;
994 
995     case VT_LOCKSWITCH:		/* prevent vty switching */
996 	if ((*(int *)data) & 0x01)
997 	    sc->flags |= SC_SCRN_VTYLOCK;
998 	else
999 	    sc->flags &= ~SC_SCRN_VTYLOCK;
1000 	return 0;
1001 
1002     case KDENABIO:      	/* allow io operations */
1003 	error = suser_cred(ap->a_cred, 0);
1004 	if (error != 0)
1005 	    return error;
1006 	if (securelevel > 0)
1007 	    return EPERM;
1008 	curthread->td_lwp->lwp_md.md_regs->tf_eflags |= PSL_IOPL;
1009 	return 0;
1010 
1011     case KDDISABIO:     	/* disallow io operations (default) */
1012 	curthread->td_lwp->lwp_md.md_regs->tf_eflags &= ~PSL_IOPL;
1013 	return 0;
1014 
1015     case KDSKBSTATE:    	/* set keyboard state (locks) */
1016 	if (*(int *)data & ~LOCK_MASK)
1017 	    return EINVAL;
1018 	scp->status &= ~LOCK_MASK;
1019 	scp->status |= *(int *)data;
1020 	if (scp == sc->cur_scp)
1021 	    update_kbd_state(scp, scp->status, LOCK_MASK);
1022 	return 0;
1023 
1024     case KDGKBSTATE:    	/* get keyboard state (locks) */
1025 	if (scp == sc->cur_scp)
1026 	    save_kbd_state(scp);
1027 	*(int *)data = scp->status & LOCK_MASK;
1028 	return 0;
1029 
1030     case KDGETREPEAT:      	/* get keyboard repeat & delay rates */
1031     case KDSETREPEAT:      	/* set keyboard repeat & delay rates (new) */
1032 	error = kbd_ioctl(sc->kbd, cmd, data);
1033 	if (error == ENOIOCTL)
1034 	    error = ENODEV;
1035 	return error;
1036 
1037     case KDSETRAD:      	/* set keyboard repeat & delay rates (old) */
1038 	if (*(int *)data & ~0x7f)
1039 	    return EINVAL;
1040 	error = kbd_ioctl(sc->kbd, cmd, data);
1041 	if (error == ENOIOCTL)
1042 	    error = ENODEV;
1043 	return error;
1044 
1045     case KDSKBMODE:     	/* set keyboard mode */
1046 	switch (*(int *)data) {
1047 	case K_XLATE:   	/* switch to XLT ascii mode */
1048 	case K_RAW: 		/* switch to RAW scancode mode */
1049 	case K_CODE: 		/* switch to CODE mode */
1050 	    scp->kbd_mode = *(int *)data;
1051 	    if (scp == sc->cur_scp)
1052 		kbd_ioctl(sc->kbd, cmd, data);
1053 	    return 0;
1054 	default:
1055 	    return EINVAL;
1056 	}
1057 	/* NOT REACHED */
1058 
1059     case KDGKBMODE:     	/* get keyboard mode */
1060 	*(int *)data = scp->kbd_mode;
1061 	return 0;
1062 
1063     case KDGKBINFO:
1064 	error = kbd_ioctl(sc->kbd, cmd, data);
1065 	if (error == ENOIOCTL)
1066 	    error = ENODEV;
1067 	return error;
1068 
1069     case KDMKTONE:      	/* sound the bell */
1070 	if (*(int*)data)
1071 	    sc_bell(scp, (*(int*)data)&0xffff,
1072 		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1073 	else
1074 	    sc_bell(scp, scp->bell_pitch, scp->bell_duration);
1075 	return 0;
1076 
1077     case KIOCSOUND:     	/* make tone (*data) hz */
1078 	if (scp == sc->cur_scp) {
1079 	    if (*(int *)data)
1080 		return sc_tone(*(int *)data);
1081 	    else
1082 		return sc_tone(0);
1083 	}
1084 	return 0;
1085 
1086     case KDGKBTYPE:     	/* get keyboard type */
1087 	error = kbd_ioctl(sc->kbd, cmd, data);
1088 	if (error == ENOIOCTL) {
1089 	    /* always return something? XXX */
1090 	    *(int *)data = 0;
1091 	}
1092 	return 0;
1093 
1094     case KDSETLED:      	/* set keyboard LED status */
1095 	if (*(int *)data & ~LED_MASK)	/* FIXME: LOCK_MASK? */
1096 	    return EINVAL;
1097 	scp->status &= ~LED_MASK;
1098 	scp->status |= *(int *)data;
1099 	if (scp == sc->cur_scp)
1100 	    update_kbd_leds(scp, scp->status);
1101 	return 0;
1102 
1103     case KDGETLED:      	/* get keyboard LED status */
1104 	if (scp == sc->cur_scp)
1105 	    save_kbd_state(scp);
1106 	*(int *)data = scp->status & LED_MASK;
1107 	return 0;
1108 
1109     case CONS_SETKBD: 		/* set the new keyboard */
1110 	{
1111 	    keyboard_t *newkbd;
1112 
1113 	    crit_enter();
1114 	    newkbd = kbd_get_keyboard(*(int *)data);
1115 	    if (newkbd == NULL) {
1116 		crit_exit();
1117 		return EINVAL;
1118 	    }
1119 	    error = 0;
1120 	    if (sc->kbd != newkbd) {
1121 		i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
1122 				 (void *)&sc->keyboard, sckbdevent, sc);
1123 		/* i == newkbd->kb_index */
1124 		if (i >= 0) {
1125 		    if (sc->kbd != NULL) {
1126 			save_kbd_state(sc->cur_scp);
1127 			kbd_release(sc->kbd, (void *)&sc->keyboard);
1128 		    }
1129 		    sc->kbd = kbd_get_keyboard(i); /* sc->kbd == newkbd */
1130 		    sc->keyboard = i;
1131 		    kbd_ioctl(sc->kbd, KDSKBMODE,
1132 			      (caddr_t)&sc->cur_scp->kbd_mode);
1133 		    update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1134 				     LOCK_MASK);
1135 		} else {
1136 		    error = EPERM;	/* XXX */
1137 		}
1138 	    }
1139 	    crit_exit();
1140 	    return error;
1141 	}
1142 
1143     case CONS_RELKBD: 		/* release the current keyboard */
1144 	crit_enter();
1145 	error = 0;
1146 	if (sc->kbd != NULL) {
1147 	    save_kbd_state(sc->cur_scp);
1148 	    error = kbd_release(sc->kbd, (void *)&sc->keyboard);
1149 	    if (error == 0) {
1150 		sc->kbd = NULL;
1151 		sc->keyboard = -1;
1152 	    }
1153 	}
1154 	crit_exit();
1155 	return error;
1156 
1157     case CONS_GETTERM:		/* get the current terminal emulator info */
1158 	{
1159 	    sc_term_sw_t *sw;
1160 
1161 	    if (((term_info_t *)data)->ti_index == 0) {
1162 		sw = scp->tsw;
1163 	    } else {
1164 		sw = sc_term_match_by_number(((term_info_t *)data)->ti_index);
1165 	    }
1166 	    if (sw != NULL) {
1167 		strncpy(((term_info_t *)data)->ti_name, sw->te_name,
1168 			sizeof(((term_info_t *)data)->ti_name));
1169 		strncpy(((term_info_t *)data)->ti_desc, sw->te_desc,
1170 			sizeof(((term_info_t *)data)->ti_desc));
1171 		((term_info_t *)data)->ti_flags = 0;
1172 		return 0;
1173 	    } else {
1174 		((term_info_t *)data)->ti_name[0] = '\0';
1175 		((term_info_t *)data)->ti_desc[0] = '\0';
1176 		((term_info_t *)data)->ti_flags = 0;
1177 		return EINVAL;
1178 	    }
1179 	}
1180 
1181     case CONS_SETTERM:		/* set the current terminal emulator */
1182 	crit_enter();
1183 	error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
1184 	/* FIXME: what if scp == sc_console! XXX */
1185 	crit_exit();
1186 	return error;
1187 
1188     case GIO_SCRNMAP:   	/* get output translation table */
1189 	bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
1190 	return 0;
1191 
1192     case PIO_SCRNMAP:   	/* set output translation table */
1193 	bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
1194 	for (i=0; i<sizeof(sc->scr_map); i++) {
1195 	    sc->scr_rmap[sc->scr_map[i]] = i;
1196 	}
1197 	return 0;
1198 
1199     case GIO_KEYMAP:		/* get keyboard translation table */
1200     case PIO_KEYMAP:		/* set keyboard translation table */
1201     case GIO_DEADKEYMAP:	/* get accent key translation table */
1202     case PIO_DEADKEYMAP:	/* set accent key translation table */
1203     case GETFKEY:		/* get function key string */
1204     case SETFKEY:		/* set function key string */
1205 	error = kbd_ioctl(sc->kbd, cmd, data);
1206 	if (error == ENOIOCTL)
1207 	    error = ENODEV;
1208 	return error;
1209 
1210 #ifndef SC_NO_FONT_LOADING
1211 
1212     case PIO_FONT8x8:   	/* set 8x8 dot font */
1213 	if (!ISFONTAVAIL(sc->adp->va_flags))
1214 	    return ENXIO;
1215 	bcopy(data, sc->font_8, 8*256);
1216 	sc->fonts_loaded |= FONT_8;
1217 	/*
1218 	 * FONT KLUDGE
1219 	 * Always use the font page #0. XXX
1220 	 * Don't load if the current font size is not 8x8.
1221 	 */
1222 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
1223 	    sc_load_font(sc->cur_scp, 0, 8, sc->font_8, 0, 256);
1224 	return 0;
1225 
1226     case GIO_FONT8x8:   	/* get 8x8 dot font */
1227 	if (!ISFONTAVAIL(sc->adp->va_flags))
1228 	    return ENXIO;
1229 	if (sc->fonts_loaded & FONT_8) {
1230 	    bcopy(sc->font_8, data, 8*256);
1231 	    return 0;
1232 	}
1233 	else
1234 	    return ENXIO;
1235 
1236     case PIO_FONT8x14:  	/* set 8x14 dot font */
1237 	if (!ISFONTAVAIL(sc->adp->va_flags))
1238 	    return ENXIO;
1239 	bcopy(data, sc->font_14, 14*256);
1240 	sc->fonts_loaded |= FONT_14;
1241 	/*
1242 	 * FONT KLUDGE
1243 	 * Always use the font page #0. XXX
1244 	 * Don't load if the current font size is not 8x14.
1245 	 */
1246 	if (ISTEXTSC(sc->cur_scp)
1247 	    && (sc->cur_scp->font_size >= 14)
1248 	    && (sc->cur_scp->font_size < 16))
1249 	    sc_load_font(sc->cur_scp, 0, 14, sc->font_14, 0, 256);
1250 	return 0;
1251 
1252     case GIO_FONT8x14:  	/* get 8x14 dot font */
1253 	if (!ISFONTAVAIL(sc->adp->va_flags))
1254 	    return ENXIO;
1255 	if (sc->fonts_loaded & FONT_14) {
1256 	    bcopy(sc->font_14, data, 14*256);
1257 	    return 0;
1258 	}
1259 	else
1260 	    return ENXIO;
1261 
1262     case PIO_FONT8x16:  	/* set 8x16 dot font */
1263 	if (!ISFONTAVAIL(sc->adp->va_flags))
1264 	    return ENXIO;
1265 	bcopy(data, sc->font_16, 16*256);
1266 	sc->fonts_loaded |= FONT_16;
1267 	/*
1268 	 * FONT KLUDGE
1269 	 * Always use the font page #0. XXX
1270 	 * Don't load if the current font size is not 8x16.
1271 	 */
1272 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
1273 	    sc_load_font(sc->cur_scp, 0, 16, sc->font_16, 0, 256);
1274 	return 0;
1275 
1276     case GIO_FONT8x16:  	/* get 8x16 dot font */
1277 	if (!ISFONTAVAIL(sc->adp->va_flags))
1278 	    return ENXIO;
1279 	if (sc->fonts_loaded & FONT_16) {
1280 	    bcopy(sc->font_16, data, 16*256);
1281 	    return 0;
1282 	}
1283 	else
1284 	    return ENXIO;
1285 
1286 #endif /* SC_NO_FONT_LOADING */
1287 
1288     default:
1289 	break;
1290     }
1291 
1292     error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, ap->a_cred);
1293     if (error != ENOIOCTL)
1294 	return(error);
1295     error = ttioctl(tp, cmd, data, flag);
1296     if (error != ENOIOCTL)
1297 	return(error);
1298     return(ENOTTY);
1299 }
1300 
1301 static void
1302 scstart(struct tty *tp)
1303 {
1304     struct clist *rbp;
1305     int len;
1306     u_char buf[PCBURST];
1307     scr_stat *scp = SC_STAT(tp->t_dev);
1308 
1309     if (scp->status & SLKED ||
1310 	(scp == scp->sc->cur_scp && scp->sc->blink_in_progress))
1311 	return;
1312     crit_enter();
1313     if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
1314 	tp->t_state |= TS_BUSY;
1315 	rbp = &tp->t_outq;
1316 	while (rbp->c_cc) {
1317 	    len = q_to_b(rbp, buf, PCBURST);
1318 	    crit_exit();
1319 	    sc_puts(scp, buf, len);
1320 	    crit_enter();
1321 	}
1322 	tp->t_state &= ~TS_BUSY;
1323 	ttwwakeup(tp);
1324     }
1325     crit_exit();
1326 }
1327 
1328 static void
1329 sccnprobe(struct consdev *cp)
1330 {
1331     int unit;
1332     int flags;
1333 
1334     cp->cn_pri = sc_get_cons_priority(&unit, &flags);
1335 
1336     /* a video card is always required */
1337     if (!scvidprobe(unit, flags, TRUE))
1338 	cp->cn_pri = CN_DEAD;
1339 
1340     /* syscons will become console even when there is no keyboard */
1341     sckbdprobe(unit, flags, TRUE);
1342 
1343     if (cp->cn_pri == CN_DEAD)
1344 	return;
1345 
1346     /* initialize required fields */
1347     cp->cn_probegood = 1;
1348 }
1349 
1350 static void
1351 sccninit(struct consdev *cp)
1352 {
1353     int unit;
1354     int flags;
1355 
1356     sc_get_cons_priority(&unit, &flags);
1357     scinit(unit, flags | SC_KERNEL_CONSOLE);
1358     sc_console_unit = unit;
1359     sc_console = sc_get_softc(unit, SC_KERNEL_CONSOLE)->console_scp;
1360 }
1361 
1362 static void
1363 sccninit_fini(struct consdev *cp)
1364 {
1365     cp->cn_dev = make_dev(&sc_ops, SC_CONSOLECTL,
1366 			  UID_ROOT, GID_WHEEL, 0600, "consolectl");
1367 }
1368 
1369 static void
1370 sccnterm(struct consdev *cp)
1371 {
1372     /* we are not the kernel console any more, release everything */
1373 
1374     if (sc_console_unit < 0)
1375 	return;			/* shouldn't happen */
1376 
1377 #if 0 /* XXX */
1378     sc_clear_screen(sc_console);
1379     sccnupdate(sc_console);
1380 #endif
1381     scterm(sc_console_unit, SC_KERNEL_CONSOLE);
1382     sc_console_unit = -1;
1383     sc_console = NULL;
1384 }
1385 
1386 static void
1387 sccnputc(void *private, int c)
1388 {
1389     u_char buf[1];
1390     scr_stat *scp = sc_console;
1391     void *save;
1392 #ifndef SC_NO_HISTORY
1393     struct tty *tp;
1394 #endif /* !SC_NO_HISTORY */
1395 
1396     /* assert(sc_console != NULL) */
1397 
1398 #ifndef SC_NO_HISTORY
1399     if (scp == scp->sc->cur_scp && scp->status & SLKED) {
1400 	scp->status &= ~SLKED;
1401 	update_kbd_state(scp, scp->status, SLKED);
1402 	if (scp->status & BUFFER_SAVED) {
1403 	    if (!sc_hist_restore(scp))
1404 		sc_remove_cutmarking(scp);
1405 	    scp->status &= ~BUFFER_SAVED;
1406 	    scp->status |= CURSOR_ENABLED;
1407 	    sc_draw_cursor_image(scp);
1408 	}
1409 	tp = VIRTUAL_TTY(scp->sc, scp->index);
1410 	if (ISTTYOPEN(tp))
1411 	    scstart(tp);
1412     }
1413 #endif /* !SC_NO_HISTORY */
1414 
1415     save = scp->ts;
1416     if (kernel_console_ts != NULL)
1417 	scp->ts = kernel_console_ts;
1418     buf[0] = c;
1419     sc_puts(scp, buf, 1);
1420     scp->ts = save;
1421 
1422     crit_enter();
1423     sccnupdate(scp);
1424     crit_exit();
1425 }
1426 
1427 static int
1428 sccngetc(void *private)
1429 {
1430     return sccngetch(0);
1431 }
1432 
1433 static int
1434 sccncheckc(void *private)
1435 {
1436     return sccngetch(SCGETC_NONBLOCK);
1437 }
1438 
1439 static void
1440 sccndbctl(void *private, int on)
1441 {
1442     /* assert(sc_console_unit >= 0) */
1443     /* try to switch to the kernel console screen */
1444     if (on && debugger == 0) {
1445 	/*
1446 	 * TRY to make sure the screen saver is stopped,
1447 	 * and the screen is updated before switching to
1448 	 * the vty0.
1449 	 */
1450 	scrn_timer(NULL);
1451 	if (!cold
1452 	    && sc_console->sc->cur_scp->smode.mode == VT_AUTO
1453 	    && sc_console->smode.mode == VT_AUTO) {
1454 	    sc_console->sc->cur_scp->status |= MOUSE_HIDDEN;
1455 	    sc_switch_scr(sc_console->sc, sc_console->index);
1456 	}
1457     }
1458     if (on)
1459 	++debugger;
1460     else
1461 	--debugger;
1462 }
1463 
1464 static int
1465 sccngetch(int flags)
1466 {
1467     static struct fkeytab fkey;
1468     static int fkeycp;
1469     scr_stat *scp;
1470     u_char *p;
1471     int cur_mode;
1472     int c;
1473 
1474     crit_enter();
1475     /* assert(sc_console != NULL) */
1476 
1477     /*
1478      * Stop the screen saver and update the screen if necessary.
1479      * What if we have been running in the screen saver code... XXX
1480      */
1481     sc_touch_scrn_saver();
1482     scp = sc_console->sc->cur_scp;	/* XXX */
1483     sccnupdate(scp);
1484 
1485     if (fkeycp < fkey.len) {
1486 	crit_exit();
1487 	return fkey.str[fkeycp++];
1488     }
1489 
1490     if (scp->sc->kbd == NULL) {
1491 	crit_exit();
1492 	return -1;
1493     }
1494 
1495     /*
1496      * Make sure the keyboard is accessible even when the kbd device
1497      * driver is disabled.
1498      */
1499     kbd_enable(scp->sc->kbd);
1500 
1501     /* we shall always use the keyboard in the XLATE mode here */
1502     cur_mode = scp->kbd_mode;
1503     scp->kbd_mode = K_XLATE;
1504     kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1505 
1506     kbd_poll(scp->sc->kbd, TRUE);
1507     c = scgetc(scp->sc, SCGETC_CN | flags);
1508     kbd_poll(scp->sc->kbd, FALSE);
1509 
1510     scp->kbd_mode = cur_mode;
1511     kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1512     kbd_disable(scp->sc->kbd);
1513     crit_exit();
1514 
1515     switch (KEYFLAGS(c)) {
1516     case 0:	/* normal char */
1517 	return KEYCHAR(c);
1518     case FKEY:	/* function key */
1519 	p = kbd_get_fkeystr(scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
1520 	fkey.len = fkeycp;
1521 	if ((p != NULL) && (fkey.len > 0)) {
1522 	    bcopy(p, fkey.str, fkey.len);
1523 	    fkeycp = 1;
1524 	    return fkey.str[0];
1525 	}
1526 	return c;	/* XXX */
1527     case NOKEY:
1528     case ERRKEY:
1529     default:
1530 	return -1;
1531     }
1532     /* NOT REACHED */
1533 }
1534 
1535 static void
1536 sccnupdate(scr_stat *scp)
1537 {
1538     /* this is a cut-down version of scrn_timer()... */
1539 
1540     if (scp->sc->font_loading_in_progress || scp->sc->videoio_in_progress)
1541 	return;
1542 
1543     if (debugger > 0 || panicstr || shutdown_in_progress) {
1544 	sc_touch_scrn_saver();
1545     } else if (scp != scp->sc->cur_scp) {
1546 	return;
1547     }
1548 
1549     if (!run_scrn_saver)
1550 	scp->sc->flags &= ~SC_SCRN_IDLE;
1551 #if NSPLASH > 0
1552     if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
1553 	if (scp->sc->flags & SC_SCRN_BLANKED)
1554             stop_scrn_saver(scp->sc, current_saver);
1555 #endif /* NSPLASH */
1556 
1557     if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress
1558 	|| scp->sc->switch_in_progress)
1559 	return;
1560     /*
1561      * FIXME: unlike scrn_timer(), we call scrn_update() from here even
1562      * when write_in_progress is non-zero.  XXX
1563      */
1564 
1565     if (!ISGRAPHSC(scp) && !(scp->sc->flags & SC_SCRN_BLANKED))
1566 	scrn_update(scp, TRUE);
1567 }
1568 
1569 static void
1570 scrn_timer(void *arg)
1571 {
1572     static int kbd_interval = 0;
1573     struct timeval tv;
1574     sc_softc_t *sc;
1575     scr_stat *scp;
1576     int again;
1577 
1578     again = (arg != NULL);
1579     if (arg != NULL)
1580 	sc = (sc_softc_t *)arg;
1581     else if (sc_console != NULL)
1582 	sc = sc_console->sc;
1583     else
1584 	return;
1585 
1586     /* don't do anything when we are performing some I/O operations */
1587     if (sc->font_loading_in_progress || sc->videoio_in_progress) {
1588 	if (again)
1589 	    callout_reset(&sc->scrn_timer_ch, hz / 10, scrn_timer, sc);
1590 	return;
1591     }
1592     crit_enter();
1593 
1594     if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
1595 	/* try to allocate a keyboard automatically */
1596 	if (++kbd_interval >= 25) {
1597 	    sc->keyboard = kbd_allocate("*", -1, (void *)&sc->keyboard,
1598 					sckbdevent, sc);
1599 	    if (sc->keyboard >= 0) {
1600 		sc->kbd = kbd_get_keyboard(sc->keyboard);
1601 		kbd_ioctl(sc->kbd, KDSKBMODE,
1602 			  (caddr_t)&sc->cur_scp->kbd_mode);
1603 		update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1604 				 LOCK_MASK);
1605 	    }
1606 	    kbd_interval = 0;
1607 	}
1608     }
1609 
1610     /* find the vty to update */
1611     scp = sc->cur_scp;
1612 
1613     /* should we stop the screen saver? */
1614     getmicrouptime(&tv);
1615     if (debugger > 0 || panicstr || shutdown_in_progress)
1616 	sc_touch_scrn_saver();
1617     if (run_scrn_saver) {
1618 	if (tv.tv_sec > sc->scrn_time_stamp + scrn_blank_time)
1619 	    sc->flags |= SC_SCRN_IDLE;
1620 	else
1621 	    sc->flags &= ~SC_SCRN_IDLE;
1622     } else {
1623 	sc->scrn_time_stamp = tv.tv_sec;
1624 	sc->flags &= ~SC_SCRN_IDLE;
1625 	if (scrn_blank_time > 0)
1626 	    run_scrn_saver = TRUE;
1627     }
1628 #if NSPLASH > 0
1629     if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
1630 	if (sc->flags & SC_SCRN_BLANKED)
1631             stop_scrn_saver(sc, current_saver);
1632 #endif /* NSPLASH */
1633 
1634     /* should we just return ? */
1635     if (sc->blink_in_progress || sc->switch_in_progress
1636 	|| sc->write_in_progress) {
1637 	if (again)
1638 	    callout_reset(&sc->scrn_timer_ch, hz / 10, scrn_timer, sc);
1639 	crit_exit();
1640 	return;
1641     }
1642 
1643     /* Update the screen */
1644     scp = sc->cur_scp;		/* cur_scp may have changed... */
1645     if (!ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1646 	scrn_update(scp, TRUE);
1647 
1648 #if NSPLASH > 0
1649     /* should we activate the screen saver? */
1650     if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
1651 	if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
1652 	    (*current_saver)(sc, TRUE);
1653 #endif /* NSPLASH */
1654 
1655     if (again)
1656 	callout_reset(&sc->scrn_timer_ch, hz / 25, scrn_timer, sc);
1657     crit_exit();
1658 }
1659 
1660 static int
1661 and_region(int *s1, int *e1, int s2, int e2)
1662 {
1663     if (*e1 < s2 || e2 < *s1)
1664 	return FALSE;
1665     *s1 = imax(*s1, s2);
1666     *e1 = imin(*e1, e2);
1667     return TRUE;
1668 }
1669 
1670 static void
1671 scrn_update(scr_stat *scp, int show_cursor)
1672 {
1673     int start;
1674     int end;
1675     int s;
1676     int e;
1677 
1678     /* assert(scp == scp->sc->cur_scp) */
1679 
1680     ++scp->sc->videoio_in_progress;
1681 
1682 #ifndef SC_NO_CUTPASTE
1683     /* remove the previous mouse pointer image if necessary */
1684     if (scp->status & MOUSE_VISIBLE) {
1685 	s = scp->mouse_pos;
1686 	e = scp->mouse_pos + scp->xsize + 1;
1687 	if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN))
1688 	    || and_region(&s, &e, scp->start, scp->end)
1689 	    || ((scp->status & CURSOR_ENABLED) &&
1690 		(scp->cursor_pos != scp->cursor_oldpos) &&
1691 		(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos)
1692 		 || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) {
1693 	    sc_remove_mouse_image(scp);
1694 	    if (scp->end >= scp->xsize*scp->ysize)
1695 		scp->end = scp->xsize*scp->ysize - 1;
1696 	}
1697     }
1698 #endif /* !SC_NO_CUTPASTE */
1699 
1700 #if 1
1701     /* debug: XXX */
1702     if (scp->end >= scp->xsize*scp->ysize) {
1703 	kprintf("scrn_update(): scp->end %d > size_of_screen!!\n", scp->end);
1704 	scp->end = scp->xsize*scp->ysize - 1;
1705     }
1706     if (scp->start < 0) {
1707 	kprintf("scrn_update(): scp->start %d < 0\n", scp->start);
1708 	scp->start = 0;
1709     }
1710 #endif
1711 
1712     /* update screen image */
1713     if (scp->start <= scp->end)  {
1714 	if (scp->mouse_cut_end >= 0) {
1715 	    /* there is a marked region for cut & paste */
1716 	    if (scp->mouse_cut_start <= scp->mouse_cut_end) {
1717 		start = scp->mouse_cut_start;
1718 		end = scp->mouse_cut_end;
1719 	    } else {
1720 		start = scp->mouse_cut_end;
1721 		end = scp->mouse_cut_start - 1;
1722 	    }
1723 	    s = start;
1724 	    e = end;
1725 	    /* does the cut-mark region overlap with the update region? */
1726 	    if (and_region(&s, &e, scp->start, scp->end)) {
1727 		(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
1728 		s = 0;
1729 		e = start - 1;
1730 		if (and_region(&s, &e, scp->start, scp->end))
1731 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1732 		s = end + 1;
1733 		e = scp->xsize*scp->ysize - 1;
1734 		if (and_region(&s, &e, scp->start, scp->end))
1735 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1736 	    } else {
1737 		(*scp->rndr->draw)(scp, scp->start,
1738 				   scp->end - scp->start + 1, FALSE);
1739 	    }
1740 	} else {
1741 	    (*scp->rndr->draw)(scp, scp->start,
1742 			       scp->end - scp->start + 1, FALSE);
1743 	}
1744     }
1745 
1746     /* we are not to show the cursor and the mouse pointer... */
1747     if (!show_cursor) {
1748         scp->end = 0;
1749         scp->start = scp->xsize*scp->ysize - 1;
1750 	--scp->sc->videoio_in_progress;
1751 	return;
1752     }
1753 
1754     /* update cursor image */
1755     if (scp->status & CURSOR_ENABLED) {
1756 	s = scp->start;
1757 	e = scp->end;
1758         /* did cursor move since last time ? */
1759         if (scp->cursor_pos != scp->cursor_oldpos) {
1760             /* do we need to remove old cursor image ? */
1761             if (!and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
1762                 sc_remove_cursor_image(scp);
1763             sc_draw_cursor_image(scp);
1764         } else {
1765             if (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos))
1766 		/* cursor didn't move, but has been overwritten */
1767 		sc_draw_cursor_image(scp);
1768 	    else if (scp->sc->flags & SC_BLINK_CURSOR)
1769 		/* if it's a blinking cursor, update it */
1770 		(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
1771 					   sc_inside_cutmark(scp,
1772 					       scp->cursor_pos));
1773         }
1774     }
1775 
1776 #ifndef SC_NO_CUTPASTE
1777     /* update "pseudo" mouse pointer image */
1778     if (scp->sc->flags & SC_MOUSE_ENABLED) {
1779 	if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
1780 	    scp->status &= ~MOUSE_MOVED;
1781 	    sc_draw_mouse_image(scp);
1782 	}
1783     }
1784 #endif /* SC_NO_CUTPASTE */
1785 
1786     scp->end = 0;
1787     scp->start = scp->xsize*scp->ysize - 1;
1788 
1789     --scp->sc->videoio_in_progress;
1790 }
1791 
1792 #if NSPLASH > 0
1793 static int
1794 scsplash_callback(int event, void *arg)
1795 {
1796     sc_softc_t *sc;
1797     int error;
1798 
1799     sc = (sc_softc_t *)arg;
1800 
1801     switch (event) {
1802     case SPLASH_INIT:
1803 	if (add_scrn_saver(scsplash_saver) == 0) {
1804 	    sc->flags &= ~SC_SAVER_FAILED;
1805 	    run_scrn_saver = TRUE;
1806 	    if (cold && !(boothowto & (RB_VERBOSE | RB_CONFIG))) {
1807 		scsplash_stick(TRUE);
1808 		(*current_saver)(sc, TRUE);
1809 	    }
1810 	}
1811 	return 0;
1812 
1813     case SPLASH_TERM:
1814 	if (current_saver == scsplash_saver) {
1815 	    scsplash_stick(FALSE);
1816 	    error = remove_scrn_saver(scsplash_saver);
1817 	    if (error)
1818 		return error;
1819 	}
1820 	return 0;
1821 
1822     default:
1823 	return EINVAL;
1824     }
1825 }
1826 
1827 static void
1828 scsplash_saver(sc_softc_t *sc, int show)
1829 {
1830     static int busy = FALSE;
1831     scr_stat *scp;
1832 
1833     if (busy)
1834 	return;
1835     busy = TRUE;
1836 
1837     scp = sc->cur_scp;
1838     if (show) {
1839 	if (!(sc->flags & SC_SAVER_FAILED)) {
1840 	    if (!(sc->flags & SC_SCRN_BLANKED))
1841 		set_scrn_saver_mode(scp, -1, NULL, 0);
1842 	    switch (splash(sc->adp, TRUE)) {
1843 	    case 0:		/* succeeded */
1844 		break;
1845 	    case EAGAIN:	/* try later */
1846 		restore_scrn_saver_mode(scp, FALSE);
1847 		sc_touch_scrn_saver();		/* XXX */
1848 		break;
1849 	    default:
1850 		sc->flags |= SC_SAVER_FAILED;
1851 		scsplash_stick(FALSE);
1852 		restore_scrn_saver_mode(scp, TRUE);
1853 		kprintf("scsplash_saver(): failed to put up the image\n");
1854 		break;
1855 	    }
1856 	}
1857     } else if (!sticky_splash) {
1858 	if ((sc->flags & SC_SCRN_BLANKED) && (splash(sc->adp, FALSE) == 0))
1859 	    restore_scrn_saver_mode(scp, TRUE);
1860     }
1861     busy = FALSE;
1862 }
1863 
1864 static int
1865 add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
1866 {
1867 #if 0
1868     int error;
1869 
1870     if (current_saver != none_saver) {
1871 	error = remove_scrn_saver(current_saver);
1872 	if (error)
1873 	    return error;
1874     }
1875 #endif
1876     if (current_saver != none_saver)
1877 	return EBUSY;
1878 
1879     run_scrn_saver = FALSE;
1880     saver_mode = CONS_LKM_SAVER;
1881     current_saver = this_saver;
1882     return 0;
1883 }
1884 
1885 static int
1886 remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
1887 {
1888     if (current_saver != this_saver)
1889 	return EINVAL;
1890 
1891 #if 0
1892     /*
1893      * In order to prevent `current_saver' from being called by
1894      * the timeout routine `scrn_timer()' while we manipulate
1895      * the saver list, we shall set `current_saver' to `none_saver'
1896      * before stopping the current saver, rather than blocking by `splXX()'.
1897      */
1898     current_saver = none_saver;
1899     if (scrn_blanked)
1900         stop_scrn_saver(this_saver);
1901 #endif
1902 
1903     /* unblank all blanked screens */
1904     wait_scrn_saver_stop(NULL);
1905     if (scrn_blanked)
1906 	return EBUSY;
1907 
1908     current_saver = none_saver;
1909     return 0;
1910 }
1911 
1912 static int
1913 set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
1914 {
1915 
1916     /* assert(scp == scp->sc->cur_scp) */
1917     crit_enter();
1918     if (!ISGRAPHSC(scp))
1919 	sc_remove_cursor_image(scp);
1920     scp->splash_save_mode = scp->mode;
1921     scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
1922     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
1923     scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
1924     scp->sc->flags |= SC_SCRN_BLANKED;
1925     ++scrn_blanked;
1926     crit_exit();
1927     if (mode < 0)
1928 	return 0;
1929     scp->mode = mode;
1930     if (set_mode(scp) == 0) {
1931 	if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
1932 	    scp->status |= GRAPHICS_MODE;
1933 #ifndef SC_NO_PALETTE_LOADING
1934 	if (pal != NULL)
1935 	    load_palette(scp->sc->adp, pal);
1936 #endif
1937 	sc_set_border(scp, border);
1938 	return 0;
1939     } else {
1940 	crit_enter();
1941 	scp->mode = scp->splash_save_mode;
1942 	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
1943 	scp->status |= scp->splash_save_status;
1944 	crit_exit();
1945 	return 1;
1946     }
1947 }
1948 
1949 static int
1950 restore_scrn_saver_mode(scr_stat *scp, int changemode)
1951 {
1952     int mode;
1953     int status;
1954 
1955     /* assert(scp == scp->sc->cur_scp) */
1956     crit_enter();
1957     mode = scp->mode;
1958     status = scp->status;
1959     scp->mode = scp->splash_save_mode;
1960     scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
1961     scp->status |= scp->splash_save_status;
1962     scp->sc->flags &= ~SC_SCRN_BLANKED;
1963     if (!changemode) {
1964 	if (!ISGRAPHSC(scp))
1965 	    sc_draw_cursor_image(scp);
1966 	--scrn_blanked;
1967 	crit_exit();
1968 	return 0;
1969     }
1970     if (set_mode(scp) == 0) {
1971 #ifndef SC_NO_PALETTE_LOADING
1972 	load_palette(scp->sc->adp, scp->sc->palette);
1973 #endif
1974 	--scrn_blanked;
1975 	crit_exit();
1976 	return 0;
1977     } else {
1978 	scp->mode = mode;
1979 	scp->status = status;
1980 	crit_exit();
1981 	return 1;
1982     }
1983 }
1984 
1985 static void
1986 stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
1987 {
1988     (*saver)(sc, FALSE);
1989     run_scrn_saver = FALSE;
1990     /* the screen saver may have chosen not to stop after all... */
1991     if (sc->flags & SC_SCRN_BLANKED)
1992 	return;
1993 
1994     mark_all(sc->cur_scp);
1995     if (sc->delayed_next_scr)
1996 	sc_switch_scr(sc, sc->delayed_next_scr - 1);
1997     wakeup((caddr_t)&scrn_blanked);
1998 }
1999 
2000 static int
2001 wait_scrn_saver_stop(sc_softc_t *sc)
2002 {
2003     int error = 0;
2004 
2005     while (scrn_blanked > 0) {
2006 	run_scrn_saver = FALSE;
2007 	if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
2008 	    error = 0;
2009 	    break;
2010 	}
2011 	error = tsleep((caddr_t)&scrn_blanked, PCATCH, "scrsav", 0);
2012 	if ((error != 0) && (error != ERESTART))
2013 	    break;
2014     }
2015     run_scrn_saver = FALSE;
2016     return error;
2017 }
2018 #endif /* NSPLASH */
2019 
2020 void
2021 sc_touch_scrn_saver(void)
2022 {
2023     scsplash_stick(FALSE);
2024     run_scrn_saver = FALSE;
2025 }
2026 
2027 int
2028 sc_switch_scr(sc_softc_t *sc, u_int next_scr)
2029 {
2030     scr_stat *cur_scp;
2031     struct tty *tp;
2032 
2033     DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
2034 
2035     /* prevent switch if previously requested */
2036     if (sc->flags & SC_SCRN_VTYLOCK) {
2037 	    sc_bell(sc->cur_scp, sc->cur_scp->bell_pitch,
2038 		sc->cur_scp->bell_duration);
2039 	    return EPERM;
2040     }
2041 
2042     /* delay switch if the screen is blanked or being updated */
2043     if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress
2044 	|| sc->blink_in_progress || sc->videoio_in_progress) {
2045 	sc->delayed_next_scr = next_scr + 1;
2046 	sc_touch_scrn_saver();
2047 	DPRINTF(5, ("switch delayed\n"));
2048 	return 0;
2049     }
2050 
2051     crit_enter();
2052     cur_scp = sc->cur_scp;
2053 
2054     /* we are in the middle of the vty switching process... */
2055     if (sc->switch_in_progress
2056 	&& (cur_scp->smode.mode == VT_PROCESS)
2057 	&& cur_scp->proc) {
2058 	if (cur_scp->proc != pfind(cur_scp->pid)) {
2059 	    /*
2060 	     * The controlling process has died!!.  Do some clean up.
2061 	     * NOTE:`cur_scp->proc' and `cur_scp->smode.mode'
2062 	     * are not reset here yet; they will be cleared later.
2063 	     */
2064 	    DPRINTF(5, ("cur_scp controlling process %d died, ",
2065 	       cur_scp->pid));
2066 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2067 		/*
2068 		 * Force the previous switch to finish, but return now
2069 		 * with error.
2070 		 *
2071 		 * note: must be called from a critical section because
2072 		 * finish_vt_rel will call do_switch_scr which releases it
2073 		 * temporarily.
2074 		 */
2075 		DPRINTF(5, ("reset WAIT_REL, "));
2076 		finish_vt_rel(cur_scp, TRUE);
2077 		crit_exit();
2078 		DPRINTF(5, ("finishing previous switch\n"));
2079 		return EINVAL;
2080 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2081 		/* let's assume screen switch has been completed. */
2082 		DPRINTF(5, ("reset WAIT_ACQ, "));
2083 		finish_vt_acq(cur_scp);
2084 	    } else {
2085 		/*
2086 	 	 * We are in between screen release and acquisition, and
2087 		 * reached here via scgetc() or scrn_timer() which has
2088 		 * interrupted exchange_scr(). Don't do anything stupid.
2089 		 */
2090 		DPRINTF(5, ("waiting nothing, "));
2091 	    }
2092 	} else {
2093 	    /*
2094 	     * The controlling process is alive, but not responding...
2095 	     * It is either buggy or it may be just taking time.
2096 	     * The following code is a gross kludge to cope with this
2097 	     * problem for which there is no clean solution. XXX
2098 	     */
2099 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2100 		switch (sc->switch_in_progress++) {
2101 		case 1:
2102 		    break;
2103 		case 2:
2104 		    DPRINTF(5, ("sending relsig again, "));
2105 		    signal_vt_rel(cur_scp);
2106 		    break;
2107 		case 3:
2108 		    break;
2109 		case 4:
2110 		default:
2111 		    /*
2112 		     * Act as if the controlling program returned
2113 		     * VT_FALSE.
2114 		     *
2115 		     * note: must be called from a critical section because
2116 		     * finish_vt_rel will call do_switch_scr which releases it
2117 		     * temporarily.
2118 		     */
2119 		    DPRINTF(5, ("force reset WAIT_REL, "));
2120 		    finish_vt_rel(cur_scp, FALSE);
2121 		    crit_exit();
2122 		    DPRINTF(5, ("act as if VT_FALSE was seen\n"));
2123 		    return EINVAL;
2124 		}
2125 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2126 		switch (sc->switch_in_progress++) {
2127 		case 1:
2128 		    break;
2129 		case 2:
2130 		    DPRINTF(5, ("sending acqsig again, "));
2131 		    signal_vt_acq(cur_scp);
2132 		    break;
2133 		case 3:
2134 		    break;
2135 		case 4:
2136 		default:
2137 		     /* clear the flag and finish the previous switch */
2138 		    DPRINTF(5, ("force reset WAIT_ACQ, "));
2139 		    finish_vt_acq(cur_scp);
2140 		    break;
2141 		}
2142 	    }
2143 	}
2144     }
2145 
2146     /*
2147      * Return error if an invalid argument is given, or vty switch
2148      * is still in progress.
2149      */
2150     if ((next_scr < sc->first_vty) || (next_scr >= sc->first_vty + sc->vtys)
2151 	|| sc->switch_in_progress) {
2152 	crit_exit();
2153 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2154 	DPRINTF(5, ("error 1\n"));
2155 	return EINVAL;
2156     }
2157 
2158     /*
2159      * Don't allow switching away from the graphics mode vty
2160      * if the switch mode is VT_AUTO, unless the next vty is the same
2161      * as the current or the current vty has been closed (but showing).
2162      */
2163     tp = VIRTUAL_TTY(sc, cur_scp->index);
2164     if ((cur_scp->index != next_scr)
2165 	&& ISTTYOPEN(tp)
2166 	&& (cur_scp->smode.mode == VT_AUTO)
2167 	&& ISGRAPHSC(cur_scp)) {
2168 	crit_exit();
2169 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2170 	DPRINTF(5, ("error, graphics mode\n"));
2171 	return EINVAL;
2172     }
2173 
2174     /*
2175      * Is the wanted vty open? Don't allow switching to a closed vty.
2176      * If we are in DDB, don't switch to a vty in the VT_PROCESS mode.
2177      * Note that we always allow the user to switch to the kernel
2178      * console even if it is closed.
2179      */
2180     if ((sc_console == NULL) || (next_scr != sc_console->index)) {
2181 	tp = VIRTUAL_TTY(sc, next_scr);
2182 	if (!ISTTYOPEN(tp)) {
2183 	    crit_exit();
2184 	    sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2185 	    DPRINTF(5, ("error 2, requested vty isn't open!\n"));
2186 	    return EINVAL;
2187 	}
2188 	if ((debugger > 0) && (SC_STAT(tp->t_dev)->smode.mode == VT_PROCESS)) {
2189 	    crit_exit();
2190 	    DPRINTF(5, ("error 3, requested vty is in the VT_PROCESS mode\n"));
2191 	    return EINVAL;
2192 	}
2193     }
2194 
2195     /* this is the start of vty switching process... */
2196     ++sc->switch_in_progress;
2197     sc->delayed_next_scr = 0;
2198     sc->old_scp = cur_scp;
2199     sc->new_scp = SC_STAT(SC_DEV(sc, next_scr));
2200     if (sc->new_scp == sc->old_scp) {
2201 	sc->switch_in_progress = 0;
2202 	wakeup((caddr_t)&sc->new_scp->smode);
2203 	crit_exit();
2204 	DPRINTF(5, ("switch done (new == old)\n"));
2205 	return 0;
2206     }
2207 
2208     /* has controlling process died? */
2209     vt_proc_alive(sc->old_scp);
2210     vt_proc_alive(sc->new_scp);
2211 
2212     /* wait for the controlling process to release the screen, if necessary */
2213     if (signal_vt_rel(sc->old_scp)) {
2214 	crit_exit();
2215 	return 0;
2216     }
2217 
2218     /* go set up the new vty screen */
2219     crit_exit();
2220     exchange_scr(sc);
2221     crit_enter();
2222 
2223     /* wake up processes waiting for this vty */
2224     wakeup((caddr_t)&sc->cur_scp->smode);
2225 
2226     /* wait for the controlling process to acknowledge, if necessary */
2227     if (signal_vt_acq(sc->cur_scp)) {
2228 	crit_exit();
2229 	return 0;
2230     }
2231 
2232     sc->switch_in_progress = 0;
2233     if (sc->unit == sc_console_unit)
2234 	cons_unavail = FALSE;
2235     crit_exit();
2236     DPRINTF(5, ("switch done\n"));
2237 
2238     return 0;
2239 }
2240 
2241 /*
2242  * NOTE: must be called from a critical section because do_switch_scr
2243  * will release it temporarily.
2244  */
2245 static void
2246 do_switch_scr(sc_softc_t *sc)
2247 {
2248     vt_proc_alive(sc->new_scp);
2249 
2250     crit_exit();
2251     exchange_scr(sc);
2252     crit_enter();
2253     /* sc->cur_scp == sc->new_scp */
2254     wakeup((caddr_t)&sc->cur_scp->smode);
2255 
2256     /* wait for the controlling process to acknowledge, if necessary */
2257     if (!signal_vt_acq(sc->cur_scp)) {
2258 	sc->switch_in_progress = 0;
2259 	if (sc->unit == sc_console_unit)
2260 	    cons_unavail = FALSE;
2261     }
2262 }
2263 
2264 static int
2265 vt_proc_alive(scr_stat *scp)
2266 {
2267     if (scp->proc) {
2268 	if (scp->proc == pfind(scp->pid))
2269 	    return TRUE;
2270 	scp->proc = NULL;
2271 	scp->smode.mode = VT_AUTO;
2272 	DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
2273     }
2274     return FALSE;
2275 }
2276 
2277 static int
2278 signal_vt_rel(scr_stat *scp)
2279 {
2280     if (scp->smode.mode != VT_PROCESS)
2281 	return FALSE;
2282     scp->status |= SWITCH_WAIT_REL;
2283     ksignal(scp->proc, scp->smode.relsig);
2284     DPRINTF(5, ("sending relsig to %d\n", scp->pid));
2285     return TRUE;
2286 }
2287 
2288 static int
2289 signal_vt_acq(scr_stat *scp)
2290 {
2291     if (scp->smode.mode != VT_PROCESS)
2292 	return FALSE;
2293     if (scp->sc->unit == sc_console_unit)
2294 	cons_unavail = TRUE;
2295     scp->status |= SWITCH_WAIT_ACQ;
2296     ksignal(scp->proc, scp->smode.acqsig);
2297     DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
2298     return TRUE;
2299 }
2300 
2301 /*
2302  * NOTE: must be called from a critical section because do_switch_scr
2303  * will release it temporarily.
2304  */
2305 static int
2306 finish_vt_rel(scr_stat *scp, int release)
2307 {
2308     if (scp == scp->sc->old_scp && scp->status & SWITCH_WAIT_REL) {
2309 	scp->status &= ~SWITCH_WAIT_REL;
2310 	if (release)
2311 	    do_switch_scr(scp->sc);
2312 	else
2313 	    scp->sc->switch_in_progress = 0;
2314 	return 0;
2315     }
2316     return EINVAL;
2317 }
2318 
2319 static int
2320 finish_vt_acq(scr_stat *scp)
2321 {
2322     if (scp == scp->sc->new_scp && scp->status & SWITCH_WAIT_ACQ) {
2323 	scp->status &= ~SWITCH_WAIT_ACQ;
2324 	scp->sc->switch_in_progress = 0;
2325 	return 0;
2326     }
2327     return EINVAL;
2328 }
2329 
2330 static void
2331 exchange_scr(sc_softc_t *sc)
2332 {
2333     scr_stat *scp;
2334 
2335     /* save the current state of video and keyboard */
2336     sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
2337     if (!ISGRAPHSC(sc->old_scp))
2338 	sc_remove_cursor_image(sc->old_scp);
2339     if (sc->old_scp->kbd_mode == K_XLATE)
2340 	save_kbd_state(sc->old_scp);
2341 
2342     /* set up the video for the new screen */
2343     scp = sc->cur_scp = sc->new_scp;
2344     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
2345 	set_mode(scp);
2346     else
2347 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2348 		    (void *)sc->adp->va_window, FALSE);
2349     scp->status |= MOUSE_HIDDEN;
2350     sc_move_cursor(scp, scp->xpos, scp->ypos);
2351     if (!ISGRAPHSC(scp))
2352 	sc_set_cursor_image(scp);
2353 #ifndef SC_NO_PALETTE_LOADING
2354     if (ISGRAPHSC(sc->old_scp))
2355 	load_palette(sc->adp, sc->palette);
2356 #endif
2357     sc_set_border(scp, scp->border);
2358 
2359     /* set up the keyboard for the new screen */
2360     if (sc->old_scp->kbd_mode != scp->kbd_mode)
2361 	kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
2362     update_kbd_state(scp, scp->status, LOCK_MASK);
2363 
2364     mark_all(scp);
2365 }
2366 
2367 void
2368 sc_puts(scr_stat *scp, u_char *buf, int len)
2369 {
2370 #if NSPLASH > 0
2371     /* make screensaver happy */
2372     if (!sticky_splash && scp == scp->sc->cur_scp)
2373 	run_scrn_saver = FALSE;
2374 #endif
2375 
2376     if (scp->tsw)
2377 	(*scp->tsw->te_puts)(scp, buf, len);
2378 
2379     if (scp->sc->delayed_next_scr)
2380 	sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
2381 }
2382 
2383 void
2384 sc_draw_cursor_image(scr_stat *scp)
2385 {
2386     /* assert(scp == scp->sc->cur_scp); */
2387     ++scp->sc->videoio_in_progress;
2388     (*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
2389 			      scp->sc->flags & SC_BLINK_CURSOR, TRUE,
2390 			      sc_inside_cutmark(scp, scp->cursor_pos));
2391     scp->cursor_oldpos = scp->cursor_pos;
2392     --scp->sc->videoio_in_progress;
2393 }
2394 
2395 void
2396 sc_remove_cursor_image(scr_stat *scp)
2397 {
2398     /* assert(scp == scp->sc->cur_scp); */
2399     ++scp->sc->videoio_in_progress;
2400     (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
2401 			      scp->sc->flags & SC_BLINK_CURSOR, FALSE,
2402 			      sc_inside_cutmark(scp, scp->cursor_oldpos));
2403     --scp->sc->videoio_in_progress;
2404 }
2405 
2406 static void
2407 update_cursor_image(scr_stat *scp)
2408 {
2409     int blink;
2410 
2411     if (scp->sc->flags & SC_CHAR_CURSOR) {
2412 	scp->cursor_base = imax(0, scp->sc->cursor_base);
2413 	scp->cursor_height = imin(scp->sc->cursor_height, scp->font_size);
2414     } else {
2415 	scp->cursor_base = 0;
2416 	scp->cursor_height = scp->font_size;
2417     }
2418     blink = scp->sc->flags & SC_BLINK_CURSOR;
2419 
2420     /* assert(scp == scp->sc->cur_scp); */
2421     ++scp->sc->videoio_in_progress;
2422     (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos, blink, FALSE,
2423 			      sc_inside_cutmark(scp, scp->cursor_pos));
2424     (*scp->rndr->set_cursor)(scp, scp->cursor_base, scp->cursor_height, blink);
2425     (*scp->rndr->draw_cursor)(scp, scp->cursor_pos, blink, TRUE,
2426 			      sc_inside_cutmark(scp, scp->cursor_pos));
2427     --scp->sc->videoio_in_progress;
2428 }
2429 
2430 void
2431 sc_set_cursor_image(scr_stat *scp)
2432 {
2433     if (scp->sc->flags & SC_CHAR_CURSOR) {
2434 	scp->cursor_base = imax(0, scp->sc->cursor_base);
2435 	scp->cursor_height = imin(scp->sc->cursor_height, scp->font_size);
2436     } else {
2437 	scp->cursor_base = 0;
2438 	scp->cursor_height = scp->font_size;
2439     }
2440 
2441     /* assert(scp == scp->sc->cur_scp); */
2442     ++scp->sc->videoio_in_progress;
2443     (*scp->rndr->set_cursor)(scp, scp->cursor_base, scp->cursor_height,
2444 			     scp->sc->flags & SC_BLINK_CURSOR);
2445     --scp->sc->videoio_in_progress;
2446 }
2447 
2448 static void
2449 scinit(int unit, int flags)
2450 {
2451     /*
2452      * When syscons is being initialized as the kernel console, malloc()
2453      * is not yet functional, because various kernel structures has not been
2454      * fully initialized yet.  Therefore, we need to declare the following
2455      * static buffers for the console.  This is less than ideal,
2456      * but is necessry evil for the time being.  XXX
2457      */
2458     static scr_stat main_console;
2459     static u_short sc_buffer[ROW*COL];	/* XXX */
2460 #ifndef SC_NO_FONT_LOADING
2461     static u_char font_8[256*8];
2462     static u_char font_14[256*14];
2463     static u_char font_16[256*16];
2464 #endif
2465 
2466     sc_softc_t *sc;
2467     scr_stat *scp;
2468     video_adapter_t *adp;
2469     int col;
2470     int row;
2471     int i;
2472 
2473     /* one time initialization */
2474     if (init_done == COLD)
2475 	sc_get_bios_values(&bios_value);
2476     init_done = WARM;
2477 
2478     /*
2479      * Allocate resources.  Even if we are being called for the second
2480      * time, we must allocate them again, because they might have
2481      * disappeared...
2482      */
2483     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2484     adp = NULL;
2485     if (sc->adapter >= 0) {
2486 	vid_release(sc->adp, (void *)&sc->adapter);
2487 	adp = sc->adp;
2488 	sc->adp = NULL;
2489     }
2490     if (sc->keyboard >= 0) {
2491 	DPRINTF(5, ("sc%d: releasing kbd%d\n", unit, sc->keyboard));
2492 	i = kbd_release(sc->kbd, (void *)&sc->keyboard);
2493 	DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
2494 	if (sc->kbd != NULL) {
2495 	    DPRINTF(5, ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
2496 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2497 	}
2498 	sc->kbd = NULL;
2499     }
2500     sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
2501     sc->adp = vid_get_adapter(sc->adapter);
2502     /* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
2503     sc->keyboard = kbd_allocate("*", unit, (void *)&sc->keyboard,
2504 				sckbdevent, sc);
2505     DPRINTF(1, ("sc%d: keyboard %d\n", unit, sc->keyboard));
2506     sc->kbd = kbd_get_keyboard(sc->keyboard);
2507     if (sc->kbd != NULL) {
2508 	DPRINTF(1, ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n",
2509 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2510     }
2511 
2512     if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
2513 
2514 	sc->initial_mode = sc->adp->va_initial_mode;
2515 
2516 #ifndef SC_NO_FONT_LOADING
2517 	if (flags & SC_KERNEL_CONSOLE) {
2518 	    sc->font_8 = font_8;
2519 	    sc->font_14 = font_14;
2520 	    sc->font_16 = font_16;
2521 	} else if (sc->font_8 == NULL) {
2522 	    /* assert(sc_malloc) */
2523 	    sc->font_8 = kmalloc(sizeof(font_8), M_SYSCONS, M_WAITOK);
2524 	    sc->font_14 = kmalloc(sizeof(font_14), M_SYSCONS, M_WAITOK);
2525 	    sc->font_16 = kmalloc(sizeof(font_16), M_SYSCONS, M_WAITOK);
2526 	}
2527 #endif
2528 
2529 	/* extract the hardware cursor location and hide the cursor for now */
2530 	(*vidsw[sc->adapter]->read_hw_cursor)(sc->adp, &col, &row);
2531 	(*vidsw[sc->adapter]->set_hw_cursor)(sc->adp, -1, -1);
2532 
2533 	/* set up the first console */
2534 	sc->first_vty = unit*MAXCONS;
2535 	sc->vtys = MAXCONS;		/* XXX: should be configurable */
2536 	if (flags & SC_KERNEL_CONSOLE) {
2537 	    scp = &main_console;
2538 	    sc->console_scp = scp;
2539 	    init_scp(sc, sc->first_vty, scp);
2540 	    sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize, scp->ysize,
2541 			(void *)sc_buffer, FALSE);
2542 	    if (sc_init_emulator(scp, SC_DFLT_TERM))
2543 		sc_init_emulator(scp, "*");
2544 	    (*scp->tsw->te_default_attr)(scp,
2545 					 kernel_default.std_color,
2546 					 kernel_default.rev_color);
2547 	} else {
2548 	    /* assert(sc_malloc) */
2549 	    sc->dev = kmalloc(sizeof(cdev_t)*sc->vtys, M_SYSCONS, M_WAITOK | M_ZERO);
2550 	    sc->dev[0] = make_dev(&sc_ops, unit*MAXCONS, UID_ROOT,
2551 				GID_WHEEL, 0600, "ttyv%r", unit*MAXCONS);
2552 	    sc->dev[0]->si_tty = ttymalloc(sc->dev[0]->si_tty);
2553 	    scp = alloc_scp(sc, sc->first_vty);
2554 	    sc->dev[0]->si_drv1 = scp;
2555 	}
2556 	sc->cur_scp = scp;
2557 
2558 	/* copy screen to temporary buffer */
2559 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2560 		    (void *)scp->sc->adp->va_window, FALSE);
2561 	if (ISTEXTSC(scp))
2562 	    sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0, scp->xsize*scp->ysize);
2563 
2564 	/* move cursors to the initial positions */
2565 	if (col >= scp->xsize)
2566 	    col = 0;
2567 	if (row >= scp->ysize)
2568 	    row = scp->ysize - 1;
2569 	scp->xpos = col;
2570 	scp->ypos = row;
2571 	scp->cursor_pos = scp->cursor_oldpos = row*scp->xsize + col;
2572 	if (bios_value.cursor_end < scp->font_size)
2573 	    sc->cursor_base = scp->font_size - bios_value.cursor_end - 1;
2574 	else
2575 	    sc->cursor_base = 0;
2576 	i = bios_value.cursor_end - bios_value.cursor_start + 1;
2577 	sc->cursor_height = imin(i, scp->font_size);
2578 #ifndef SC_NO_SYSMOUSE
2579 	sc_mouse_move(scp, scp->xpixel/2, scp->ypixel/2);
2580 #endif
2581 	if (!ISGRAPHSC(scp)) {
2582     	    sc_set_cursor_image(scp);
2583     	    sc_draw_cursor_image(scp);
2584 	}
2585 
2586 	/* save font and palette */
2587 #ifndef SC_NO_FONT_LOADING
2588 	sc->fonts_loaded = 0;
2589 	if (ISFONTAVAIL(sc->adp->va_flags)) {
2590 #ifdef SC_DFLT_FONT
2591 	    bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
2592 	    bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
2593 	    bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
2594 	    sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
2595 	    if (scp->font_size < 14) {
2596 		sc_load_font(scp, 0, 8, sc->font_8, 0, 256);
2597 	    } else if (scp->font_size >= 16) {
2598 		sc_load_font(scp, 0, 16, sc->font_16, 0, 256);
2599 	    } else {
2600 		sc_load_font(scp, 0, 14, sc->font_14, 0, 256);
2601 	    }
2602 #else /* !SC_DFLT_FONT */
2603 	    if (scp->font_size < 14) {
2604 		sc_save_font(scp, 0, 8, sc->font_8, 0, 256);
2605 		sc->fonts_loaded = FONT_8;
2606 	    } else if (scp->font_size >= 16) {
2607 		sc_save_font(scp, 0, 16, sc->font_16, 0, 256);
2608 		sc->fonts_loaded = FONT_16;
2609 	    } else {
2610 		sc_save_font(scp, 0, 14, sc->font_14, 0, 256);
2611 		sc->fonts_loaded = FONT_14;
2612 	    }
2613 #endif /* SC_DFLT_FONT */
2614 	    /* FONT KLUDGE: always use the font page #0. XXX */
2615 	    sc_show_font(scp, 0);
2616 	}
2617 #endif /* !SC_NO_FONT_LOADING */
2618 
2619 #ifndef SC_NO_PALETTE_LOADING
2620 	save_palette(sc->adp, sc->palette);
2621 #endif
2622 
2623 #if NSPLASH > 0
2624 	if (!(sc->flags & SC_SPLASH_SCRN) && (flags & SC_KERNEL_CONSOLE)) {
2625 	    /* we are ready to put up the splash image! */
2626 	    splash_init(sc->adp, scsplash_callback, sc);
2627 	    sc->flags |= SC_SPLASH_SCRN;
2628 	}
2629 #endif /* NSPLASH */
2630     }
2631 
2632     /* the rest is not necessary, if we have done it once */
2633     if (sc->flags & SC_INIT_DONE)
2634 	return;
2635 
2636     /* initialize mapscrn arrays to a one to one map */
2637     for (i = 0; i < sizeof(sc->scr_map); i++)
2638 	sc->scr_map[i] = sc->scr_rmap[i] = i;
2639 
2640     sc->flags |= SC_INIT_DONE;
2641 }
2642 
2643 static void
2644 scterm(int unit, int flags)
2645 {
2646     sc_softc_t *sc;
2647     scr_stat *scp;
2648 
2649     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2650     if (sc == NULL)
2651 	return;			/* shouldn't happen */
2652 
2653 #if NSPLASH > 0
2654     /* this console is no longer available for the splash screen */
2655     if (sc->flags & SC_SPLASH_SCRN) {
2656 	splash_term(sc->adp);
2657 	sc->flags &= ~SC_SPLASH_SCRN;
2658     }
2659 #endif /* NSPLASH */
2660 
2661 #if 0 /* XXX */
2662     /* move the hardware cursor to the upper-left corner */
2663     (*vidsw[sc->adapter]->set_hw_cursor)(sc->adp, 0, 0);
2664 #endif
2665 
2666     /* release the keyboard and the video card */
2667     if (sc->keyboard >= 0)
2668 	kbd_release(sc->kbd, &sc->keyboard);
2669     if (sc->adapter >= 0)
2670 	vid_release(sc->adp, &sc->adapter);
2671 
2672     /*
2673      * Stop the terminal emulator, if any.  If operating on the
2674      * kernel console sc->dev may not be setup yet.
2675      */
2676     if (flags & SC_KERNEL_CONSOLE)
2677 	scp = sc->console_scp;
2678     else
2679 	scp = SC_STAT(sc->dev[0]);
2680     if (scp->tsw)
2681 	(*scp->tsw->te_term)(scp, &scp->ts);
2682     if (scp->ts != NULL)
2683 	kfree(scp->ts, M_SYSCONS);
2684 
2685     /* clear the structure */
2686     if (!(flags & SC_KERNEL_CONSOLE)) {
2687 	/* XXX: We need delete_dev() for this */
2688 	kfree(sc->dev, M_SYSCONS);
2689 #if 0
2690 	/* XXX: We need a ttyunregister for this */
2691 	kfree(sc->tty, M_SYSCONS);
2692 #endif
2693 #ifndef SC_NO_FONT_LOADING
2694 	kfree(sc->font_8, M_SYSCONS);
2695 	kfree(sc->font_14, M_SYSCONS);
2696 	kfree(sc->font_16, M_SYSCONS);
2697 #endif
2698 	/* XXX vtb, history */
2699     }
2700     bzero(sc, sizeof(*sc));
2701     sc->keyboard = -1;
2702     sc->adapter = -1;
2703 }
2704 
2705 static void
2706 scshutdown(void *arg, int howto)
2707 {
2708     /* assert(sc_console != NULL) */
2709 
2710     sc_touch_scrn_saver();
2711     if (!cold && sc_console
2712 	&& sc_console->sc->cur_scp->smode.mode == VT_AUTO
2713 	&& sc_console->smode.mode == VT_AUTO)
2714 	sc_switch_scr(sc_console->sc, sc_console->index);
2715     shutdown_in_progress = TRUE;
2716 }
2717 
2718 int
2719 sc_clean_up(scr_stat *scp)
2720 {
2721 #if NSPLASH > 0
2722     int error;
2723 #endif /* NSPLASH */
2724 
2725     if (scp->sc->flags & SC_SCRN_BLANKED) {
2726 	sc_touch_scrn_saver();
2727 #if NSPLASH > 0
2728 	if ((error = wait_scrn_saver_stop(scp->sc)))
2729 	    return error;
2730 #endif /* NSPLASH */
2731     }
2732     scp->status |= MOUSE_HIDDEN;
2733     sc_remove_mouse_image(scp);
2734     sc_remove_cutmarking(scp);
2735     return 0;
2736 }
2737 
2738 void
2739 sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
2740 {
2741     sc_vtb_t new;
2742     sc_vtb_t old;
2743 
2744     old = scp->vtb;
2745     sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
2746     if (!discard && (old.vtb_flags & VTB_VALID)) {
2747 	/* retain the current cursor position and buffer contants */
2748 	scp->cursor_oldpos = scp->cursor_pos;
2749 	/*
2750 	 * This works only if the old buffer has the same size as or larger
2751 	 * than the new one. XXX
2752 	 */
2753 	sc_vtb_copy(&old, 0, &new, 0, scp->xsize*scp->ysize);
2754 	scp->vtb = new;
2755     } else {
2756 	scp->vtb = new;
2757 	sc_vtb_destroy(&old);
2758     }
2759 
2760 #ifndef SC_NO_SYSMOUSE
2761     /* move the mouse cursor at the center of the screen */
2762     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
2763 #endif
2764 }
2765 
2766 static scr_stat *
2767 alloc_scp(sc_softc_t *sc, int vty)
2768 {
2769     scr_stat *scp;
2770 
2771     /* assert(sc_malloc) */
2772 
2773     scp = kmalloc(sizeof(scr_stat), M_SYSCONS, M_WAITOK);
2774     init_scp(sc, vty, scp);
2775 
2776     sc_alloc_scr_buffer(scp, TRUE, TRUE);
2777     if (sc_init_emulator(scp, SC_DFLT_TERM))
2778 	sc_init_emulator(scp, "*");
2779 
2780 #ifndef SC_NO_CUTPASTE
2781     sc_alloc_cut_buffer(scp, TRUE);
2782 #endif
2783 
2784 #ifndef SC_NO_HISTORY
2785     sc_alloc_history_buffer(scp, 0, 0, TRUE);
2786 #endif
2787 
2788     return scp;
2789 }
2790 
2791 static void
2792 init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
2793 {
2794     video_info_t info;
2795 
2796     bzero(scp, sizeof(*scp));
2797 
2798     scp->index = vty;
2799     scp->sc = sc;
2800     scp->status = 0;
2801     scp->mode = sc->initial_mode;
2802     callout_init(&scp->blink_screen_ch);
2803     (*vidsw[sc->adapter]->get_info)(sc->adp, scp->mode, &info);
2804     if (info.vi_flags & V_INFO_GRAPHICS) {
2805 	scp->status |= GRAPHICS_MODE;
2806 	scp->xpixel = info.vi_width;
2807 	scp->ypixel = info.vi_height;
2808 	scp->xsize = info.vi_width/8;
2809 	scp->ysize = info.vi_height/info.vi_cheight;
2810 	scp->font_size = 0;
2811 	scp->font = NULL;
2812     } else {
2813 	scp->xsize = info.vi_width;
2814 	scp->ysize = info.vi_height;
2815 	scp->xpixel = scp->xsize*8;
2816 	scp->ypixel = scp->ysize*info.vi_cheight;
2817 	if (info.vi_cheight < 14) {
2818 	    scp->font_size = 8;
2819 #ifndef SC_NO_FONT_LOADING
2820 	    scp->font = sc->font_8;
2821 #else
2822 	    scp->font = NULL;
2823 #endif
2824 	} else if (info.vi_cheight >= 16) {
2825 	    scp->font_size = 16;
2826 #ifndef SC_NO_FONT_LOADING
2827 	    scp->font = sc->font_16;
2828 #else
2829 	    scp->font = NULL;
2830 #endif
2831 	} else {
2832 	    scp->font_size = 14;
2833 #ifndef SC_NO_FONT_LOADING
2834 	    scp->font = sc->font_14;
2835 #else
2836 	    scp->font = NULL;
2837 #endif
2838 	}
2839     }
2840     sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
2841     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
2842     scp->xoff = scp->yoff = 0;
2843     scp->xpos = scp->ypos = 0;
2844     scp->start = scp->xsize * scp->ysize - 1;
2845     scp->end = 0;
2846     scp->tsw = NULL;
2847     scp->ts = NULL;
2848     scp->rndr = NULL;
2849     scp->border = BG_BLACK;
2850     scp->cursor_base = sc->cursor_base;
2851     scp->cursor_height = imin(sc->cursor_height, scp->font_size);
2852     scp->mouse_cut_start = scp->xsize*scp->ysize;
2853     scp->mouse_cut_end = -1;
2854     scp->mouse_signal = 0;
2855     scp->mouse_pid = 0;
2856     scp->mouse_proc = NULL;
2857     scp->kbd_mode = K_XLATE;
2858     scp->bell_pitch = bios_value.bell_pitch;
2859     scp->bell_duration = BELL_DURATION;
2860     scp->status |= (bios_value.shift_state & NLKED);
2861     scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
2862     scp->pid = 0;
2863     scp->proc = NULL;
2864     scp->smode.mode = VT_AUTO;
2865     scp->history = NULL;
2866     scp->history_pos = 0;
2867     scp->history_size = 0;
2868 }
2869 
2870 int
2871 sc_init_emulator(scr_stat *scp, char *name)
2872 {
2873     sc_term_sw_t *sw;
2874     sc_rndr_sw_t *rndr;
2875     void *p;
2876     int error;
2877 
2878     if (name == NULL)	/* if no name is given, use the current emulator */
2879 	sw = scp->tsw;
2880     else		/* ...otherwise find the named emulator */
2881 	sw = sc_term_match(name);
2882     if (sw == NULL)
2883 	return EINVAL;
2884 
2885     rndr = NULL;
2886     if (strcmp(sw->te_renderer, "*") != 0) {
2887 	rndr = sc_render_match(scp, sw->te_renderer,
2888 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
2889     }
2890     if (rndr == NULL) {
2891 	rndr = sc_render_match(scp, scp->sc->adp->va_name,
2892 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
2893 	if (rndr == NULL)
2894 	    return ENODEV;
2895     }
2896 
2897     if (sw == scp->tsw) {
2898 	error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
2899 	scp->rndr = rndr;
2900 	scp->rndr->init(scp);
2901 	sc_clear_screen(scp);
2902 	/* assert(error == 0); */
2903 	return error;
2904     }
2905 
2906     if (sc_malloc && (sw->te_size > 0))
2907 	p = kmalloc(sw->te_size, M_SYSCONS, M_NOWAIT);
2908     else
2909 	p = NULL;
2910     error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
2911     if (error)
2912 	return error;
2913 
2914     if (scp->tsw)
2915 	(*scp->tsw->te_term)(scp, &scp->ts);
2916     if (scp->ts != NULL)
2917 	kfree(scp->ts, M_SYSCONS);
2918     scp->tsw = sw;
2919     scp->ts = p;
2920     scp->rndr = rndr;
2921     scp->rndr->init(scp);
2922 
2923     /* XXX */
2924     (*sw->te_default_attr)(scp, user_default.std_color, user_default.rev_color);
2925     sc_clear_screen(scp);
2926 
2927     return 0;
2928 }
2929 
2930 /*
2931  * scgetc(flags) - get character from keyboard.
2932  * If flags & SCGETC_CN, then avoid harmful side effects.
2933  * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
2934  * return NOKEY if there is nothing there.
2935  */
2936 static u_int
2937 scgetc(sc_softc_t *sc, u_int flags)
2938 {
2939     scr_stat *scp;
2940 #ifndef SC_NO_HISTORY
2941     struct tty *tp;
2942 #endif
2943     u_int c;
2944     int this_scr;
2945     int f;
2946     int i;
2947 
2948     if (sc->kbd == NULL)
2949 	return NOKEY;
2950 
2951 next_code:
2952 #if 1
2953     /* I don't like this, but... XXX */
2954     if (flags & SCGETC_CN)
2955 	sccnupdate(sc->cur_scp);
2956 #endif
2957     scp = sc->cur_scp;
2958     /* first see if there is something in the keyboard port */
2959     for (;;) {
2960 	c = kbd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
2961 	if (c == ERRKEY) {
2962 	    if (!(flags & SCGETC_CN))
2963 		sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
2964 	} else if (c == NOKEY)
2965 	    return c;
2966 	else
2967 	    break;
2968     }
2969 
2970     /* make screensaver happy */
2971     if (!(c & RELKEY))
2972 	sc_touch_scrn_saver();
2973 
2974     if (!(flags & SCGETC_CN))
2975 	/* do the /dev/random device a favour */
2976 	add_keyboard_randomness(c);
2977 
2978     if (scp->kbd_mode != K_XLATE)
2979 	return KEYCHAR(c);
2980 
2981     /* if scroll-lock pressed allow history browsing */
2982     if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
2983 
2984 	scp->status &= ~CURSOR_ENABLED;
2985 	sc_remove_cursor_image(scp);
2986 
2987 #ifndef SC_NO_HISTORY
2988 	if (!(scp->status & BUFFER_SAVED)) {
2989 	    scp->status |= BUFFER_SAVED;
2990 	    sc_hist_save(scp);
2991 	}
2992 	switch (c) {
2993 	/* FIXME: key codes */
2994 	case SPCLKEY | FKEY | F(49):  /* home key */
2995 	    sc_remove_cutmarking(scp);
2996 	    sc_hist_home(scp);
2997 	    goto next_code;
2998 
2999 	case SPCLKEY | FKEY | F(57):  /* end key */
3000 	    sc_remove_cutmarking(scp);
3001 	    sc_hist_end(scp);
3002 	    goto next_code;
3003 
3004 	case SPCLKEY | FKEY | F(50):  /* up arrow key */
3005 	    sc_remove_cutmarking(scp);
3006 	    if (sc_hist_up_line(scp))
3007 		if (!(flags & SCGETC_CN))
3008 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3009 	    goto next_code;
3010 
3011 	case SPCLKEY | FKEY | F(58):  /* down arrow key */
3012 	    sc_remove_cutmarking(scp);
3013 	    if (sc_hist_down_line(scp))
3014 		if (!(flags & SCGETC_CN))
3015 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3016 	    goto next_code;
3017 
3018 	case SPCLKEY | FKEY | F(51):  /* page up key */
3019 	    sc_remove_cutmarking(scp);
3020 	    for (i=0; i<scp->ysize; i++)
3021 	    if (sc_hist_up_line(scp)) {
3022 		if (!(flags & SCGETC_CN))
3023 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3024 		break;
3025 	    }
3026 	    goto next_code;
3027 
3028 	case SPCLKEY | FKEY | F(59):  /* page down key */
3029 	    sc_remove_cutmarking(scp);
3030 	    for (i=0; i<scp->ysize; i++)
3031 	    if (sc_hist_down_line(scp)) {
3032 		if (!(flags & SCGETC_CN))
3033 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3034 		break;
3035 	    }
3036 	    goto next_code;
3037 	}
3038 #endif /* SC_NO_HISTORY */
3039     }
3040 
3041     /*
3042      * Process and consume special keys here.  Return a plain char code
3043      * or a char code with the META flag or a function key code.
3044      */
3045     if (c & RELKEY) {
3046 	/* key released */
3047 	/* goto next_code */
3048     } else {
3049 	/* key pressed */
3050 	if (c & SPCLKEY) {
3051 	    c &= ~SPCLKEY;
3052 	    switch (KEYCHAR(c)) {
3053 	    /* LOCKING KEYS */
3054 	    case NLK: case CLK: case ALK:
3055 		break;
3056 	    case SLK:
3057 		kbd_ioctl(sc->kbd, KDGKBSTATE, (caddr_t)&f);
3058 		if (f & SLKED) {
3059 		    scp->status |= SLKED;
3060 		} else {
3061 		    if (scp->status & SLKED) {
3062 			scp->status &= ~SLKED;
3063 #ifndef SC_NO_HISTORY
3064 			if (scp->status & BUFFER_SAVED) {
3065 			    if (!sc_hist_restore(scp))
3066 				sc_remove_cutmarking(scp);
3067 			    scp->status &= ~BUFFER_SAVED;
3068 			    scp->status |= CURSOR_ENABLED;
3069 			    sc_draw_cursor_image(scp);
3070 			}
3071 			tp = VIRTUAL_TTY(sc, scp->index);
3072 			if (ISTTYOPEN(tp))
3073 			    scstart(tp);
3074 #endif
3075 		    }
3076 		}
3077 		break;
3078 
3079 	    /* NON-LOCKING KEYS */
3080 	    case NOP:
3081 	    case LSH:  case RSH:  case LCTR: case RCTR:
3082 	    case LALT: case RALT: case ASH:  case META:
3083 		break;
3084 
3085 	    case BTAB:
3086 		if (!(sc->flags & SC_SCRN_BLANKED))
3087 		    return c;
3088 		break;
3089 
3090 	    case SPSC:
3091 #if NSPLASH > 0
3092 		/* force activatation/deactivation of the screen saver */
3093 		if (!(sc->flags & SC_SCRN_BLANKED)) {
3094 		    run_scrn_saver = TRUE;
3095 		    sc->scrn_time_stamp -= scrn_blank_time;
3096 		}
3097 		if (cold) {
3098 		    /*
3099 		     * While devices are being probed, the screen saver need
3100 		     * to be invoked explictly. XXX
3101 		     */
3102 		    if (sc->flags & SC_SCRN_BLANKED) {
3103 			scsplash_stick(FALSE);
3104 			stop_scrn_saver(sc, current_saver);
3105 		    } else {
3106 			if (!ISGRAPHSC(scp)) {
3107 			    scsplash_stick(TRUE);
3108 			    (*current_saver)(sc, TRUE);
3109 			}
3110 		    }
3111 		}
3112 #endif /* NSPLASH */
3113 		break;
3114 
3115 	    case RBT:
3116 #ifndef SC_DISABLE_REBOOT
3117 		shutdown_nice(0);
3118 #endif
3119 		break;
3120 
3121 	    case HALT:
3122 #ifndef SC_DISABLE_REBOOT
3123 		shutdown_nice(RB_HALT);
3124 #endif
3125 		break;
3126 
3127 	    case PDWN:
3128 #ifndef SC_DISABLE_REBOOT
3129 		shutdown_nice(RB_HALT|RB_POWEROFF);
3130 #endif
3131 		break;
3132 
3133 #if NAPM > 0
3134 	    case SUSP:
3135 		apm_suspend(PMST_SUSPEND);
3136 		break;
3137 	    case STBY:
3138 		apm_suspend(PMST_STANDBY);
3139 		break;
3140 #else
3141 	    case SUSP:
3142 	    case STBY:
3143 		break;
3144 #endif
3145 
3146 	    case DBG:
3147 #ifndef SC_DISABLE_DDBKEY
3148 #ifdef DDB
3149 		Debugger("manual escape to debugger");
3150 #else
3151 		kprintf("No debugger in kernel\n");
3152 #endif
3153 #else /* SC_DISABLE_DDBKEY */
3154 		/* do nothing */
3155 #endif /* SC_DISABLE_DDBKEY */
3156 		break;
3157 
3158 	    case PNC:
3159 		if (enable_panic_key)
3160 			panic("Forced by the panic key");
3161 		break;
3162 
3163 	    case NEXT:
3164 		this_scr = scp->index;
3165 		for (i = (this_scr - sc->first_vty + 1)%sc->vtys;
3166 			sc->first_vty + i != this_scr;
3167 			i = (i + 1)%sc->vtys) {
3168 		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
3169 		    if (ISTTYOPEN(tp)) {
3170 			sc_switch_scr(scp->sc, sc->first_vty + i);
3171 			break;
3172 		    }
3173 		}
3174 		break;
3175 
3176 	    case PREV:
3177 		this_scr = scp->index;
3178 		for (i = (this_scr - sc->first_vty + sc->vtys - 1)%sc->vtys;
3179 			sc->first_vty + i != this_scr;
3180 			i = (i + sc->vtys - 1)%sc->vtys) {
3181 		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
3182 		    if (ISTTYOPEN(tp)) {
3183 			sc_switch_scr(scp->sc, sc->first_vty + i);
3184 			break;
3185 		    }
3186 		}
3187 		break;
3188 
3189 	    default:
3190 		if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
3191 		    sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
3192 		    break;
3193 		}
3194 		/* assert(c & FKEY) */
3195 		if (!(sc->flags & SC_SCRN_BLANKED))
3196 		    return c;
3197 		break;
3198 	    }
3199 	    /* goto next_code */
3200 	} else {
3201 	    /* regular keys (maybe MKEY is set) */
3202 	    if (!(sc->flags & SC_SCRN_BLANKED))
3203 		return c;
3204 	}
3205     }
3206 
3207     goto next_code;
3208 }
3209 
3210 int
3211 scmmap(struct dev_mmap_args *ap)
3212 {
3213     scr_stat *scp;
3214 
3215     scp = SC_STAT(ap->a_head.a_dev);
3216     if (scp != scp->sc->cur_scp)
3217 	return EINVAL;
3218     ap->a_result = (*vidsw[scp->sc->adapter]->mmap)(scp->sc->adp, ap->a_offset,
3219 						    ap->a_nprot);
3220     return(0);
3221 }
3222 
3223 static int
3224 save_kbd_state(scr_stat *scp)
3225 {
3226     int state;
3227     int error;
3228 
3229     error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3230     if (error == ENOIOCTL)
3231 	error = ENODEV;
3232     if (error == 0) {
3233 	scp->status &= ~LOCK_MASK;
3234 	scp->status |= state;
3235     }
3236     return error;
3237 }
3238 
3239 static int
3240 update_kbd_state(scr_stat *scp, int new_bits, int mask)
3241 {
3242     int state;
3243     int error;
3244 
3245     if (mask != LOCK_MASK) {
3246 	error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3247 	if (error == ENOIOCTL)
3248 	    error = ENODEV;
3249 	if (error)
3250 	    return error;
3251 	state &= ~mask;
3252 	state |= new_bits & mask;
3253     } else {
3254 	state = new_bits & LOCK_MASK;
3255     }
3256     error = kbd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
3257     if (error == ENOIOCTL)
3258 	error = ENODEV;
3259     return error;
3260 }
3261 
3262 static int
3263 update_kbd_leds(scr_stat *scp, int which)
3264 {
3265     int error;
3266 
3267     which &= LOCK_MASK;
3268     error = kbd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
3269     if (error == ENOIOCTL)
3270 	error = ENODEV;
3271     return error;
3272 }
3273 
3274 int
3275 set_mode(scr_stat *scp)
3276 {
3277     video_info_t info;
3278 
3279     /* reject unsupported mode */
3280     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, scp->mode, &info))
3281 	return 1;
3282 
3283     /* if this vty is not currently showing, do nothing */
3284     if (scp != scp->sc->cur_scp)
3285 	return 0;
3286 
3287     /* setup video hardware for the given mode */
3288     (*vidsw[scp->sc->adapter]->set_mode)(scp->sc->adp, scp->mode);
3289     scp->rndr->init(scp);
3290     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3291 		(void *)scp->sc->adp->va_window, FALSE);
3292 
3293 #ifndef SC_NO_FONT_LOADING
3294     /* load appropriate font */
3295     if (!(scp->status & GRAPHICS_MODE)) {
3296 	if (!(scp->status & PIXEL_MODE) && ISFONTAVAIL(scp->sc->adp->va_flags)) {
3297 	    if (scp->font_size < 14) {
3298 		if (scp->sc->fonts_loaded & FONT_8)
3299 		    sc_load_font(scp, 0, 8, scp->sc->font_8, 0, 256);
3300 	    } else if (scp->font_size >= 16) {
3301 		if (scp->sc->fonts_loaded & FONT_16)
3302 		    sc_load_font(scp, 0, 16, scp->sc->font_16, 0, 256);
3303 	    } else {
3304 		if (scp->sc->fonts_loaded & FONT_14)
3305 		    sc_load_font(scp, 0, 14, scp->sc->font_14, 0, 256);
3306 	    }
3307 	    /*
3308 	     * FONT KLUDGE:
3309 	     * This is an interim kludge to display correct font.
3310 	     * Always use the font page #0 on the video plane 2.
3311 	     * Somehow we cannot show the font in other font pages on
3312 	     * some video cards... XXX
3313 	     */
3314 	    sc_show_font(scp, 0);
3315 	}
3316 	mark_all(scp);
3317     }
3318 #endif /* !SC_NO_FONT_LOADING */
3319 
3320     sc_set_border(scp, scp->border);
3321     sc_set_cursor_image(scp);
3322 
3323     return 0;
3324 }
3325 
3326 void
3327 refresh_ega_palette(scr_stat *scp)
3328 {
3329     uint32_t r, g, b;
3330     int reg;
3331     int rsize, gsize, bsize;
3332     int rfld, gfld, bfld;
3333     int i;
3334 
3335     rsize = scp->sc->adp->va_info.vi_pixel_fsizes[0];
3336     gsize = scp->sc->adp->va_info.vi_pixel_fsizes[1];
3337     bsize = scp->sc->adp->va_info.vi_pixel_fsizes[2];
3338     rfld = scp->sc->adp->va_info.vi_pixel_fields[0];
3339     gfld = scp->sc->adp->va_info.vi_pixel_fields[1];
3340     bfld = scp->sc->adp->va_info.vi_pixel_fields[2];
3341 
3342     for (i = 0; i < 16; i++) {
3343 	reg = scp->sc->adp->va_palette_regs[i];
3344 
3345 	r = scp->sc->palette[reg * 3] >> (8 - rsize);
3346 	g = scp->sc->palette[reg * 3 + 1] >> (8 - gsize);
3347 	b = scp->sc->palette[reg * 3 + 2] >> (8 - bsize);
3348 
3349 	scp->ega_palette[i] = (r << rfld) + (g << gfld) + (b << bfld);
3350     }
3351 }
3352 
3353 void
3354 sc_set_border(scr_stat *scp, int color)
3355 {
3356     ++scp->sc->videoio_in_progress;
3357     (*scp->rndr->draw_border)(scp, color);
3358     --scp->sc->videoio_in_progress;
3359 }
3360 
3361 #ifndef SC_NO_FONT_LOADING
3362 void
3363 sc_load_font(scr_stat *scp, int page, int size, u_char *buf,
3364 	     int base, int count)
3365 {
3366     sc_softc_t *sc;
3367 
3368     sc = scp->sc;
3369     sc->font_loading_in_progress = TRUE;
3370     (*vidsw[sc->adapter]->load_font)(sc->adp, page, size, buf, base, count);
3371     sc->font_loading_in_progress = FALSE;
3372 }
3373 
3374 void
3375 sc_save_font(scr_stat *scp, int page, int size, u_char *buf,
3376 	     int base, int count)
3377 {
3378     sc_softc_t *sc;
3379 
3380     sc = scp->sc;
3381     sc->font_loading_in_progress = TRUE;
3382     (*vidsw[sc->adapter]->save_font)(sc->adp, page, size, buf, base, count);
3383     sc->font_loading_in_progress = FALSE;
3384 }
3385 
3386 void
3387 sc_show_font(scr_stat *scp, int page)
3388 {
3389     (*vidsw[scp->sc->adapter]->show_font)(scp->sc->adp, page);
3390 }
3391 #endif /* !SC_NO_FONT_LOADING */
3392 
3393 void
3394 sc_paste(scr_stat *scp, u_char *p, int count)
3395 {
3396     struct tty *tp;
3397     u_char *rmap;
3398 
3399     if (scp->status & MOUSE_VISIBLE) {
3400 	tp = VIRTUAL_TTY(scp->sc, scp->sc->cur_scp->index);
3401 	if (!ISTTYOPEN(tp))
3402 	    return;
3403 	rmap = scp->sc->scr_rmap;
3404 	for (; count > 0; --count)
3405 	    (*linesw[tp->t_line].l_rint)(rmap[*p++], tp);
3406     }
3407 }
3408 
3409 void
3410 sc_bell(scr_stat *scp, int pitch, int duration)
3411 {
3412     if (cold || shutdown_in_progress)
3413 	return;
3414 
3415     if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
3416 	return;
3417 
3418     if (scp->sc->flags & SC_VISUAL_BELL) {
3419 	if (scp->sc->blink_in_progress)
3420 	    return;
3421 	scp->sc->blink_in_progress = 3;
3422 	if (scp != scp->sc->cur_scp)
3423 	    scp->sc->blink_in_progress += 2;
3424 	blink_screen(scp->sc->cur_scp);
3425     } else if (duration != 0 && pitch != 0) {
3426 	if (scp != scp->sc->cur_scp)
3427 	    pitch *= 2;
3428 	sysbeep(pitch, duration);
3429     }
3430 }
3431 
3432 static void
3433 blink_screen(void *arg)
3434 {
3435     scr_stat *scp = arg;
3436     struct tty *tp;
3437 
3438     if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
3439 	scp->sc->blink_in_progress = 0;
3440     	mark_all(scp);
3441 	tp = VIRTUAL_TTY(scp->sc, scp->index);
3442 	if (ISTTYOPEN(tp))
3443 	    scstart(tp);
3444 	if (scp->sc->delayed_next_scr)
3445 	    sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
3446     }
3447     else {
3448 	(*scp->rndr->draw)(scp, 0, scp->xsize*scp->ysize,
3449 			   scp->sc->blink_in_progress & 1);
3450 	scp->sc->blink_in_progress--;
3451 	callout_reset(&scp->blink_screen_ch, hz / 10, blink_screen, scp);
3452     }
3453 }
3454