xref: /freebsd-14.2/sys/dev/syscons/syscons.c (revision 547d3473)
1 /*-
2  * Copyright (c) 1992-1998 S�ren Schmidt
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer,
10  *    without modification, immediately at the beginning of the file.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 
32 #include "opt_syscons.h"
33 #include "opt_splash.h"
34 #include "opt_ddb.h"
35 
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/conf.h>
39 #include <sys/cons.h>
40 #include <sys/consio.h>
41 #include <sys/kdb.h>
42 #include <sys/eventhandler.h>
43 #include <sys/fbio.h>
44 #include <sys/kbio.h>
45 #include <sys/kernel.h>
46 #include <sys/lock.h>
47 #include <sys/malloc.h>
48 #include <sys/mutex.h>
49 #include <sys/proc.h>
50 #include <sys/random.h>
51 #include <sys/reboot.h>
52 #include <sys/signalvar.h>
53 #include <sys/sysctl.h>
54 #include <sys/tty.h>
55 #include <sys/power.h>
56 
57 #include <machine/clock.h>
58 #if __sparc64__ || __powerpc__
59 #include <machine/sc_machdep.h>
60 #else
61 #include <machine/pc/display.h>
62 #endif
63 #if defined( __i386__) || defined(__amd64__)
64 #include <machine/psl.h>
65 #include <machine/frame.h>
66 #endif
67 
68 #include <dev/kbd/kbdreg.h>
69 #include <dev/fb/fbreg.h>
70 #include <dev/fb/splashreg.h>
71 #include <dev/syscons/syscons.h>
72 
73 #define COLD 0
74 #define WARM 1
75 
76 #define DEFAULT_BLANKTIME	(5*60)		/* 5 minutes */
77 #define MAX_BLANKTIME		(7*24*60*60)	/* 7 days!? */
78 
79 #define KEYCODE_BS		0x0e		/* "<-- Backspace" key, XXX */
80 
81 typedef struct default_attr {
82 	int		std_color;		/* normal hardware color */
83 	int		rev_color;		/* reverse hardware color */
84 } default_attr;
85 
86 static default_attr user_default = {
87     SC_NORM_ATTR,
88     SC_NORM_REV_ATTR,
89 };
90 
91 static default_attr kernel_default = {
92     SC_KERNEL_CONS_ATTR,
93     SC_KERNEL_CONS_REV_ATTR,
94 };
95 
96 static	int		sc_console_unit = -1;
97 static	int		sc_saver_keyb_only = 1;
98 static  scr_stat    	*sc_console;
99 static	struct tty	*sc_console_tty;
100 static  struct consdev	*sc_consptr;
101 static	void		*kernel_console_ts;
102 static	scr_stat	main_console;
103 static	struct cdev 	*main_devs[MAXCONS];
104 
105 static  char        	init_done = COLD;
106 static  char		shutdown_in_progress = FALSE;
107 static	char		sc_malloc = FALSE;
108 
109 static	int		saver_mode = CONS_NO_SAVER; /* LKM/user saver */
110 static	int		run_scrn_saver = FALSE;	/* should run the saver? */
111 static	int		enable_bell = TRUE; /* enable beeper */
112 static	long        	scrn_blank_time = 0;    /* screen saver timeout value */
113 #ifdef DEV_SPLASH
114 static	int     	scrn_blanked;		/* # of blanked screen */
115 static	int		sticky_splash = FALSE;
116 
117 static	void		none_saver(sc_softc_t *sc, int blank) { }
118 static	void		(*current_saver)(sc_softc_t *, int) = none_saver;
119 #endif
120 
121 SYSCTL_NODE(_hw, OID_AUTO, syscons, CTLFLAG_RD, 0, "syscons");
122 SYSCTL_NODE(_hw_syscons, OID_AUTO, saver, CTLFLAG_RD, 0, "saver");
123 SYSCTL_INT(_hw_syscons_saver, OID_AUTO, keybonly, CTLFLAG_RW,
124     &sc_saver_keyb_only, 0, "screen saver interrupted by input only");
125 SYSCTL_INT(_hw_syscons, OID_AUTO, bell, CTLFLAG_RW, &enable_bell,
126     0, "enable bell");
127 #if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
128 #include "font.h"
129 #endif
130 
131 	d_ioctl_t	*sc_user_ioctl;
132 
133 static	bios_values_t	bios_value;
134 
135 static	int		enable_panic_key;
136 SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
137 	   0, "Enable panic via keypress specified in kbdmap(5)");
138 
139 #define SC_CONSOLECTL	255
140 
141 #define VIRTUAL_TTY(sc, x) (SC_DEV((sc), (x)) != NULL ?	\
142 	SC_DEV((sc), (x))->si_tty : NULL)
143 #define ISTTYOPEN(tp)	((tp) && ((tp)->t_state & TS_ISOPEN))
144 
145 static	int		debugger;
146 
147 /* prototypes */
148 static int scvidprobe(int unit, int flags, int cons);
149 static int sckbdprobe(int unit, int flags, int cons);
150 static void scmeminit(void *arg);
151 static int scdevtounit(struct cdev *dev);
152 static kbd_callback_func_t sckbdevent;
153 static int scparam(struct tty *tp, struct termios *t);
154 static void scstart(struct tty *tp);
155 static void scinit(int unit, int flags);
156 static scr_stat *sc_get_stat(struct cdev *devptr);
157 static void scterm(int unit, int flags);
158 static void scshutdown(void *arg, int howto);
159 static u_int scgetc(sc_softc_t *sc, u_int flags);
160 #define SCGETC_CN	1
161 #define SCGETC_NONBLOCK	2
162 static int sccngetch(int flags);
163 static void sccnupdate(scr_stat *scp);
164 static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
165 static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
166 static timeout_t scrn_timer;
167 static int and_region(int *s1, int *e1, int s2, int e2);
168 static void scrn_update(scr_stat *scp, int show_cursor);
169 
170 #ifdef DEV_SPLASH
171 static int scsplash_callback(int event, void *arg);
172 static void scsplash_saver(sc_softc_t *sc, int show);
173 static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
174 static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
175 static int set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border);
176 static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
177 static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
178 static int wait_scrn_saver_stop(sc_softc_t *sc);
179 #define scsplash_stick(stick)		(sticky_splash = (stick))
180 #else /* !DEV_SPLASH */
181 #define scsplash_stick(stick)
182 #endif /* DEV_SPLASH */
183 
184 static int do_switch_scr(sc_softc_t *sc, int s);
185 static int vt_proc_alive(scr_stat *scp);
186 static int signal_vt_rel(scr_stat *scp);
187 static int signal_vt_acq(scr_stat *scp);
188 static int finish_vt_rel(scr_stat *scp, int release, int *s);
189 static int finish_vt_acq(scr_stat *scp);
190 static void exchange_scr(sc_softc_t *sc);
191 static void update_cursor_image(scr_stat *scp);
192 static void change_cursor_shape(scr_stat *scp, int flags, int base, int height);
193 static int save_kbd_state(scr_stat *scp);
194 static int update_kbd_state(scr_stat *scp, int state, int mask);
195 static int update_kbd_leds(scr_stat *scp, int which);
196 static timeout_t blink_screen;
197 
198 static cn_probe_t	sccnprobe;
199 static cn_init_t	sccninit;
200 static cn_getc_t	sccngetc;
201 static cn_checkc_t	sccncheckc;
202 static cn_putc_t	sccnputc;
203 static cn_dbctl_t	sccndbctl;
204 static cn_term_t	sccnterm;
205 
206 CONS_DRIVER(sc, sccnprobe, sccninit, sccnterm, sccngetc, sccncheckc, sccnputc,
207 	    sccndbctl);
208 
209 static	d_open_t	scopen;
210 static	d_close_t	scclose;
211 static	d_read_t	scread;
212 static	d_ioctl_t	scioctl;
213 static	d_mmap_t	scmmap;
214 
215 static struct cdevsw sc_cdevsw = {
216 	.d_version =	D_VERSION,
217 	.d_open =	scopen,
218 	.d_close =	scclose,
219 	.d_read =	scread,
220 	.d_ioctl =	scioctl,
221 	.d_mmap =	scmmap,
222 	.d_name =	"sc",
223 	.d_flags =	D_TTY | D_NEEDGIANT,
224 };
225 
226 int
227 sc_probe_unit(int unit, int flags)
228 {
229     if (!scvidprobe(unit, flags, FALSE)) {
230 	if (bootverbose)
231 	    printf("sc%d: no video adapter found.\n", unit);
232 	return ENXIO;
233     }
234 
235     /* syscons will be attached even when there is no keyboard */
236     sckbdprobe(unit, flags, FALSE);
237 
238     return 0;
239 }
240 
241 /* probe video adapters, return TRUE if found */
242 static int
243 scvidprobe(int unit, int flags, int cons)
244 {
245     /*
246      * Access the video adapter driver through the back door!
247      * Video adapter drivers need to be configured before syscons.
248      * However, when syscons is being probed as the low-level console,
249      * they have not been initialized yet.  We force them to initialize
250      * themselves here. XXX
251      */
252     vid_configure(cons ? VIO_PROBE_ONLY : 0);
253 
254     return (vid_find_adapter("*", unit) >= 0);
255 }
256 
257 /* probe the keyboard, return TRUE if found */
258 static int
259 sckbdprobe(int unit, int flags, int cons)
260 {
261     /* access the keyboard driver through the backdoor! */
262     kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
263 
264     return (kbd_find_keyboard("*", unit) >= 0);
265 }
266 
267 static char
268 *adapter_name(video_adapter_t *adp)
269 {
270     static struct {
271 	int type;
272 	char *name[2];
273     } names[] = {
274 	{ KD_MONO,	{ "MDA",	"MDA" } },
275 	{ KD_HERCULES,	{ "Hercules",	"Hercules" } },
276 	{ KD_CGA,	{ "CGA",	"CGA" } },
277 	{ KD_EGA,	{ "EGA",	"EGA (mono)" } },
278 	{ KD_VGA,	{ "VGA",	"VGA (mono)" } },
279 	{ KD_PC98,	{ "PC-98x1",	"PC-98x1" } },
280 	{ KD_TGA,	{ "TGA",	"TGA" } },
281 	{ -1,		{ "Unknown",	"Unknown" } },
282     };
283     int i;
284 
285     for (i = 0; names[i].type != -1; ++i)
286 	if (names[i].type == adp->va_type)
287 	    break;
288     return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
289 }
290 
291 int
292 sc_attach_unit(int unit, int flags)
293 {
294     struct tty *tp;
295     sc_softc_t *sc;
296     scr_stat *scp;
297 #ifdef SC_PIXEL_MODE
298     video_info_t info;
299 #endif
300     int vc;
301     struct cdev *dev;
302 
303     flags &= ~SC_KERNEL_CONSOLE;
304 
305     if (sc_console_unit == unit) {
306 	/*
307 	 * If this unit is being used as the system console, we need to
308 	 * adjust some variables and buffers before and after scinit().
309 	 */
310 	/* assert(sc_console != NULL) */
311 	flags |= SC_KERNEL_CONSOLE;
312 	scmeminit(NULL);
313 
314 	scinit(unit, flags);
315 
316 	if (sc_console->tsw->te_size > 0) {
317 	    /* assert(sc_console->ts != NULL); */
318 	    kernel_console_ts = sc_console->ts;
319 	    sc_console->ts = malloc(sc_console->tsw->te_size,
320 				    M_DEVBUF, M_WAITOK);
321 	    bcopy(kernel_console_ts, sc_console->ts, sc_console->tsw->te_size);
322     	    (*sc_console->tsw->te_default_attr)(sc_console,
323 						user_default.std_color,
324 						user_default.rev_color);
325 	}
326     } else {
327 	scinit(unit, flags);
328     }
329 
330     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
331     sc->config = flags;
332     scp = sc_get_stat(sc->dev[0]);
333     if (sc_console == NULL)	/* sc_console_unit < 0 */
334 	sc_console = scp;
335 
336 #ifdef SC_PIXEL_MODE
337     if ((sc->config & SC_VESA800X600)
338 	&& ((*vidsw[sc->adapter]->get_info)(sc->adp, M_VESA_800x600, &info) == 0)) {
339 #ifdef DEV_SPLASH
340 	if (sc->flags & SC_SPLASH_SCRN)
341 	    splash_term(sc->adp);
342 #endif
343 	sc_set_graphics_mode(scp, NULL, M_VESA_800x600);
344 	sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
345 	sc->initial_mode = M_VESA_800x600;
346 #ifdef DEV_SPLASH
347 	/* put up the splash again! */
348 	if (sc->flags & SC_SPLASH_SCRN)
349     	    splash_init(sc->adp, scsplash_callback, sc);
350 #endif
351     }
352 #endif /* SC_PIXEL_MODE */
353 
354     /* initialize cursor */
355     if (!ISGRAPHSC(scp))
356     	update_cursor_image(scp);
357 
358     /* get screen update going */
359     scrn_timer(sc);
360 
361     /* set up the keyboard */
362     kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
363     update_kbd_state(scp, scp->status, LOCK_MASK);
364 
365     printf("sc%d: %s <%d virtual consoles, flags=0x%x>\n",
366 	   unit, adapter_name(sc->adp), sc->vtys, sc->config);
367     if (bootverbose) {
368 	printf("sc%d:", unit);
369     	if (sc->adapter >= 0)
370 	    printf(" fb%d", sc->adapter);
371 	if (sc->keyboard >= 0)
372 	    printf(", kbd%d", sc->keyboard);
373 	if (scp->tsw)
374 	    printf(", terminal emulator: %s (%s)",
375 		   scp->tsw->te_name, scp->tsw->te_desc);
376 	printf("\n");
377     }
378 
379     /* register a shutdown callback for the kernel console */
380     if (sc_console_unit == unit)
381 	EVENTHANDLER_REGISTER(shutdown_pre_sync, scshutdown,
382 			      (void *)(uintptr_t)unit, SHUTDOWN_PRI_DEFAULT);
383 
384     for (vc = 0; vc < sc->vtys; vc++) {
385 	if (sc->dev[vc] == NULL) {
386 		dev = make_dev(&sc_cdevsw, vc + unit * MAXCONS,
387 		    UID_ROOT, GID_WHEEL, 0600, "ttyv%r", vc + unit * MAXCONS);
388 		sc->dev[vc] = dev;
389 	    	tp = sc->dev[vc]->si_tty = ttyalloc();
390 	        tp->t_oproc = scstart;
391 	        tp->t_param = scparam;
392 	        tp->t_stop = nottystop;
393 	        tp->t_dev = sc->dev[vc];
394 		if (vc == 0 && sc->dev == main_devs)
395 			SC_STAT(sc->dev[0]) = &main_console;
396 	}
397 	/*
398 	 * The first vty already has struct tty and scr_stat initialized
399 	 * in scinit().  The other vtys will have these structs when
400 	 * first opened.
401 	 */
402     }
403 
404     dev = make_dev(&sc_cdevsw, SC_CONSOLECTL,
405 		   UID_ROOT, GID_WHEEL, 0600, "consolectl");
406     tp = dev->si_tty = sc_console_tty = ttyalloc();
407     ttyconsolemode(tp, 0);
408     tp->t_oproc = scstart;
409     tp->t_param = scparam;
410     tp->t_stop = nottystop;
411     tp->t_dev = dev;
412     SC_STAT(dev) = sc_console;
413 
414     return 0;
415 }
416 
417 static void
418 scmeminit(void *arg)
419 {
420     if (sc_malloc)
421 	return;
422     sc_malloc = TRUE;
423 
424     /*
425      * As soon as malloc() becomes functional, we had better allocate
426      * various buffers for the kernel console.
427      */
428 
429     if (sc_console_unit < 0)	/* sc_console == NULL */
430 	return;
431 
432     /* copy the temporary buffer to the final buffer */
433     sc_alloc_scr_buffer(sc_console, FALSE, FALSE);
434 
435 #ifndef SC_NO_CUTPASTE
436     sc_alloc_cut_buffer(sc_console, FALSE);
437 #endif
438 
439 #ifndef SC_NO_HISTORY
440     /* initialize history buffer & pointers */
441     sc_alloc_history_buffer(sc_console, 0, 0, FALSE);
442 #endif
443 }
444 
445 /* XXX */
446 SYSINIT(sc_mem, SI_SUB_KMEM, SI_ORDER_ANY, scmeminit, NULL);
447 
448 static int
449 scdevtounit(struct cdev *dev)
450 {
451     int vty = SC_VTY(dev);
452 
453     if (vty == SC_CONSOLECTL)
454 	return ((sc_console != NULL) ? sc_console->sc->unit : -1);
455     else if ((vty < 0) || (vty >= MAXCONS*sc_max_unit()))
456 	return -1;
457     else
458 	return vty/MAXCONS;
459 }
460 
461 static int
462 scopen(struct cdev *dev, int flag, int mode, struct thread *td)
463 {
464     int unit = scdevtounit(dev);
465     sc_softc_t *sc;
466     struct tty *tp;
467     scr_stat *scp;
468 #ifndef __sparc64__
469     keyarg_t key;
470 #endif
471     int error;
472 
473     DPRINTF(5, ("scopen: dev:%d,%d, unit:%d, vty:%d\n",
474 		major(dev), minor(dev), unit, SC_VTY(dev)));
475 
476     tp = dev->si_tty;
477     sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
478     if (sc == NULL)
479 	return ENXIO;
480 
481     if (!ISTTYOPEN(tp)) {
482 	tp->t_termios = tp->t_init_in;
483         /* Use the current setting of the <-- key as default VERASE. */
484         /* If the Delete key is preferable, an stty is necessary     */
485 #ifndef __sparc64__
486 	if (sc->kbd != NULL) {
487 	    key.keynum = KEYCODE_BS;
488 	    kbd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
489             tp->t_cc[VERASE] = key.key.map[0];
490 	}
491 #endif
492 	scparam(tp, &tp->t_termios);
493 	ttyld_modem(tp, 1);
494     }
495     else
496 	if (tp->t_state & TS_XCLUDE && suser(td))
497 	    return(EBUSY);
498 
499     error = ttyld_open(tp, dev);
500 
501     scp = sc_get_stat(dev);
502     if (scp == NULL) {
503 	scp = SC_STAT(dev) = alloc_scp(sc, SC_VTY(dev));
504 	if (ISGRAPHSC(scp))
505 	    sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
506     }
507     if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
508 	tp->t_winsize.ws_col = scp->xsize;
509 	tp->t_winsize.ws_row = scp->ysize;
510     }
511 
512     return error;
513 }
514 
515 static int
516 scclose(struct cdev *dev, int flag, int mode, struct thread *td)
517 {
518     struct tty *tp = dev->si_tty;
519     scr_stat *scp;
520     int s;
521 
522     if (SC_VTY(dev) != SC_CONSOLECTL) {
523 	scp = sc_get_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 	s = spltty();
527 	if ((scp == scp->sc->cur_scp) && (scp->sc->unit == sc_console_unit))
528 	    cnavailable(sc_consptr, TRUE);
529 	if (finish_vt_rel(scp, TRUE, &s) == 0)	/* force release */
530 	    DPRINTF(5, ("reset WAIT_REL, "));
531 	if (finish_vt_acq(scp) == 0)		/* force acknowledge */
532 	    DPRINTF(5, ("reset WAIT_ACQ, "));
533 #if not_yet_done
534 	if (scp == &main_console) {
535 	    scp->pid = 0;
536 	    scp->proc = NULL;
537 	    scp->smode.mode = VT_AUTO;
538 	}
539 	else {
540 	    sc_vtb_destroy(&scp->vtb);
541 #ifndef __sparc64__
542 	    sc_vtb_destroy(&scp->scr);
543 #endif
544 	    sc_free_history_buffer(scp, scp->ysize);
545 	    SC_STAT(dev) = NULL;
546 	    free(scp, M_DEVBUF);
547 	}
548 #else
549 	scp->pid = 0;
550 	scp->proc = NULL;
551 	scp->smode.mode = VT_AUTO;
552 #endif
553 	scp->kbd_mode = K_XLATE;
554 	if (scp == scp->sc->cur_scp)
555 	    kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
556 	DPRINTF(5, ("done.\n"));
557     }
558     spltty();
559     ttyld_close(tp, flag);
560     tty_close(tp);
561     spl0();
562     return(0);
563 }
564 
565 static int
566 scread(struct cdev *dev, struct uio *uio, int flag)
567 {
568     if (!sc_saver_keyb_only)
569 	sc_touch_scrn_saver();
570     return ttyread(dev, uio, flag);
571 }
572 
573 static int
574 sckbdevent(keyboard_t *thiskbd, int event, void *arg)
575 {
576     sc_softc_t *sc;
577     struct tty *cur_tty;
578     int c;
579     size_t len;
580     u_char *cp;
581 
582     sc = (sc_softc_t *)arg;
583     /* assert(thiskbd == sc->kbd) */
584 
585     switch (event) {
586     case KBDIO_KEYINPUT:
587 	break;
588     case KBDIO_UNLOADING:
589 	sc->kbd = NULL;
590 	sc->keyboard = -1;
591 	kbd_release(thiskbd, (void *)&sc->keyboard);
592 	return 0;
593     default:
594 	return EINVAL;
595     }
596 
597     /*
598      * Loop while there is still input to get from the keyboard.
599      * I don't think this is nessesary, and it doesn't fix
600      * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
601      */
602     while ((c = scgetc(sc, SCGETC_NONBLOCK)) != NOKEY) {
603 
604 	cur_tty = VIRTUAL_TTY(sc, sc->cur_scp->index);
605 	if (!ISTTYOPEN(cur_tty)) {
606 	    cur_tty = sc_console_tty;
607 	    if (!ISTTYOPEN(cur_tty))
608 		continue;
609 	}
610 
611 	if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
612 	    continue;
613 
614 	switch (KEYFLAGS(c)) {
615 	case 0x0000: /* normal key */
616 	    ttyld_rint(cur_tty, KEYCHAR(c));
617 	    break;
618 	case FKEY:  /* function key, return string */
619 	    cp = kbd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
620 	    if (cp != NULL) {
621 	    	while (len-- >  0)
622 		    ttyld_rint(cur_tty, *cp++);
623 	    }
624 	    break;
625 	case MKEY:  /* meta is active, prepend ESC */
626 	    ttyld_rint(cur_tty, 0x1b);
627 	    ttyld_rint(cur_tty, KEYCHAR(c));
628 	    break;
629 	case BKEY:  /* backtab fixed sequence (esc [ Z) */
630 	    ttyld_rint(cur_tty, 0x1b);
631 	    ttyld_rint(cur_tty, '[');
632 	    ttyld_rint(cur_tty, 'Z');
633 	    break;
634 	}
635     }
636 
637     sc->cur_scp->status |= MOUSE_HIDDEN;
638 
639     return 0;
640 }
641 
642 static int
643 scparam(struct tty *tp, struct termios *t)
644 {
645     tp->t_ispeed = t->c_ispeed;
646     tp->t_ospeed = t->c_ospeed;
647     tp->t_cflag = t->c_cflag;
648     return 0;
649 }
650 
651 static int
652 scioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
653 {
654     int error;
655     int i;
656     struct tty *tp;
657     sc_softc_t *sc;
658     scr_stat *scp;
659     int s;
660 
661     tp = dev->si_tty;
662 
663     /* If there is a user_ioctl function call that first */
664     if (sc_user_ioctl) {
665 	error = (*sc_user_ioctl)(dev, cmd, data, flag, td);
666 	if (error != ENOIOCTL)
667 	    return error;
668     }
669 
670     error = sc_vid_ioctl(tp, cmd, data, flag, td);
671     if (error != ENOIOCTL)
672 	return error;
673 
674 #ifndef SC_NO_HISTORY
675     error = sc_hist_ioctl(tp, cmd, data, flag, td);
676     if (error != ENOIOCTL)
677 	return error;
678 #endif
679 
680 #ifndef SC_NO_SYSMOUSE
681     error = sc_mouse_ioctl(tp, cmd, data, flag, td);
682     if (error != ENOIOCTL)
683 	return error;
684 #endif
685 
686     scp = sc_get_stat(tp->t_dev);
687     /* assert(scp != NULL) */
688     /* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
689     sc = scp->sc;
690 
691     if (scp->tsw) {
692 	error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, flag, td);
693 	if (error != ENOIOCTL)
694 	    return error;
695     }
696 
697     switch (cmd) {  		/* process console hardware related ioctl's */
698 
699     case GIO_ATTR:      	/* get current attributes */
700 	/* this ioctl is not processed here, but in the terminal emulator */
701 	return ENOTTY;
702 
703     case GIO_COLOR:     	/* is this a color console ? */
704 	*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
705 	return 0;
706 
707     case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
708 	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
709             return EINVAL;
710 	s = spltty();
711 	scrn_blank_time = *(int *)data;
712 	run_scrn_saver = (scrn_blank_time != 0);
713 	splx(s);
714 	return 0;
715 
716     case CONS_CURSORTYPE:   	/* set cursor type (obsolete) */
717 	s = spltty();
718 	*(int *)data &= CONS_CURSOR_ATTRS;
719 	sc_change_cursor_shape(scp, *(int *)data, -1, -1);
720 	splx(s);
721 	return 0;
722 
723     case CONS_GETCURSORSHAPE:   /* get cursor shape (new interface) */
724 	if (((int *)data)[0] & CONS_LOCAL_CURSOR) {
725 	    ((int *)data)[0] = scp->curr_curs_attr.flags;
726 	    ((int *)data)[1] = scp->curr_curs_attr.base;
727 	    ((int *)data)[2] = scp->curr_curs_attr.height;
728 	} else {
729 	    ((int *)data)[0] = sc->curs_attr.flags;
730 	    ((int *)data)[1] = sc->curs_attr.base;
731 	    ((int *)data)[2] = sc->curs_attr.height;
732 	}
733 	return 0;
734 
735     case CONS_SETCURSORSHAPE:   /* set cursor shape (new interface) */
736 	s = spltty();
737 	sc_change_cursor_shape(scp, ((int *)data)[0],
738 	    ((int *)data)[1], ((int *)data)[2]);
739 	splx(s);
740 	return 0;
741 
742     case CONS_BELLTYPE: 	/* set bell type sound/visual */
743 	if ((*(int *)data) & 0x01)
744 	    sc->flags |= SC_VISUAL_BELL;
745 	else
746 	    sc->flags &= ~SC_VISUAL_BELL;
747 	if ((*(int *)data) & 0x02)
748 	    sc->flags |= SC_QUIET_BELL;
749 	else
750 	    sc->flags &= ~SC_QUIET_BELL;
751 	return 0;
752 
753     case CONS_GETINFO:  	/* get current (virtual) console info */
754     {
755 	vid_info_t *ptr = (vid_info_t*)data;
756 	if (ptr->size == sizeof(struct vid_info)) {
757 	    ptr->m_num = sc->cur_scp->index;
758 	    ptr->font_size = scp->font_size;
759 	    ptr->mv_col = scp->xpos;
760 	    ptr->mv_row = scp->ypos;
761 	    ptr->mv_csz = scp->xsize;
762 	    ptr->mv_rsz = scp->ysize;
763 	    ptr->mv_hsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
764 	    /*
765 	     * The following fields are filled by the terminal emulator. XXX
766 	     *
767 	     * ptr->mv_norm.fore
768 	     * ptr->mv_norm.back
769 	     * ptr->mv_rev.fore
770 	     * ptr->mv_rev.back
771 	     */
772 	    ptr->mv_grfc.fore = 0;      /* not supported */
773 	    ptr->mv_grfc.back = 0;      /* not supported */
774 	    ptr->mv_ovscan = scp->border;
775 	    if (scp == sc->cur_scp)
776 		save_kbd_state(scp);
777 	    ptr->mk_keylock = scp->status & LOCK_MASK;
778 	    return 0;
779 	}
780 	return EINVAL;
781     }
782 
783     case CONS_GETVERS:  	/* get version number */
784 	*(int*)data = 0x200;    /* version 2.0 */
785 	return 0;
786 
787     case CONS_IDLE:		/* see if the screen has been idle */
788 	/*
789 	 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
790 	 * the user process may have been writing something on the
791 	 * screen and syscons is not aware of it. Declare the screen
792 	 * is NOT idle if it is in one of these modes. But there is
793 	 * an exception to it; if a screen saver is running in the
794 	 * graphics mode in the current screen, we should say that the
795 	 * screen has been idle.
796 	 */
797 	*(int *)data = (sc->flags & SC_SCRN_IDLE)
798 		       && (!ISGRAPHSC(sc->cur_scp)
799 			   || (sc->cur_scp->status & SAVER_RUNNING));
800 	return 0;
801 
802     case CONS_SAVERMODE:	/* set saver mode */
803 	switch(*(int *)data) {
804 	case CONS_NO_SAVER:
805 	case CONS_USR_SAVER:
806 	    /* if a LKM screen saver is running, stop it first. */
807 	    scsplash_stick(FALSE);
808 	    saver_mode = *(int *)data;
809 	    s = spltty();
810 #ifdef DEV_SPLASH
811 	    if ((error = wait_scrn_saver_stop(NULL))) {
812 		splx(s);
813 		return error;
814 	    }
815 #endif
816 	    run_scrn_saver = TRUE;
817 	    if (saver_mode == CONS_USR_SAVER)
818 		scp->status |= SAVER_RUNNING;
819 	    else
820 		scp->status &= ~SAVER_RUNNING;
821 	    scsplash_stick(TRUE);
822 	    splx(s);
823 	    break;
824 	case CONS_LKM_SAVER:
825 	    s = spltty();
826 	    if ((saver_mode == CONS_USR_SAVER) && (scp->status & SAVER_RUNNING))
827 		scp->status &= ~SAVER_RUNNING;
828 	    saver_mode = *(int *)data;
829 	    splx(s);
830 	    break;
831 	default:
832 	    return EINVAL;
833 	}
834 	return 0;
835 
836     case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
837 	/*
838 	 * Note that this ioctl does not guarantee the screen saver
839 	 * actually starts or stops. It merely attempts to do so...
840 	 */
841 	s = spltty();
842 	run_scrn_saver = (*(int *)data != 0);
843 	if (run_scrn_saver)
844 	    sc->scrn_time_stamp -= scrn_blank_time;
845 	splx(s);
846 	return 0;
847 
848     case CONS_SCRSHOT:		/* get a screen shot */
849     {
850 	int retval, hist_rsz;
851 	size_t lsize, csize;
852 	vm_offset_t frbp, hstp;
853 	unsigned lnum;
854 	scrshot_t *ptr = (scrshot_t *)data;
855 	void *outp = ptr->buf;
856 
857 	if (ptr->x < 0 || ptr->y < 0 || ptr->xsize < 0 || ptr->ysize < 0)
858 		return EINVAL;
859 	s = spltty();
860 	if (ISGRAPHSC(scp)) {
861 	    splx(s);
862 	    return EOPNOTSUPP;
863 	}
864 	hist_rsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
865 	if (((u_int)ptr->x + ptr->xsize) > scp->xsize ||
866 	    ((u_int)ptr->y + ptr->ysize) > (scp->ysize + hist_rsz)) {
867 	    splx(s);
868 	    return EINVAL;
869 	}
870 
871 	lsize = scp->xsize * sizeof(u_int16_t);
872 	csize = ptr->xsize * sizeof(u_int16_t);
873 	/* Pointer to the last line of framebuffer */
874 	frbp = scp->vtb.vtb_buffer + scp->ysize * lsize + ptr->x *
875 	       sizeof(u_int16_t);
876 	/* Pointer to the last line of target buffer */
877 	outp = (char *)outp + ptr->ysize * csize;
878 	/* Pointer to the last line of history buffer */
879 	if (scp->history != NULL)
880 	    hstp = scp->history->vtb_buffer + sc_vtb_tail(scp->history) *
881 		sizeof(u_int16_t) + ptr->x * sizeof(u_int16_t);
882 	else
883 	    hstp = 0;
884 
885 	retval = 0;
886 	for (lnum = 0; lnum < (ptr->y + ptr->ysize); lnum++) {
887 	    if (lnum < scp->ysize) {
888 		frbp -= lsize;
889 	    } else {
890 		hstp -= lsize;
891 		if (hstp < scp->history->vtb_buffer)
892 		    hstp += scp->history->vtb_rows * lsize;
893 		frbp = hstp;
894 	    }
895 	    if (lnum < ptr->y)
896 		continue;
897 	    outp = (char *)outp - csize;
898 	    retval = copyout((void *)frbp, outp, csize);
899 	    if (retval != 0)
900 		break;
901 	}
902 	splx(s);
903 	return retval;
904     }
905 
906     case VT_SETMODE:    	/* set screen switcher mode */
907     {
908 	struct vt_mode *mode;
909 	struct proc *p1;
910 
911 	mode = (struct vt_mode *)data;
912 	DPRINTF(5, ("sc%d: VT_SETMODE ", sc->unit));
913 	if (scp->smode.mode == VT_PROCESS) {
914 	    p1 = pfind(scp->pid);
915     	    if (scp->proc == p1 && scp->proc != td->td_proc) {
916 		if (p1)
917 		    PROC_UNLOCK(p1);
918 		DPRINTF(5, ("error EPERM\n"));
919 		return EPERM;
920 	    }
921 	    if (p1)
922 		PROC_UNLOCK(p1);
923 	}
924 	s = spltty();
925 	if (mode->mode == VT_AUTO) {
926 	    scp->smode.mode = VT_AUTO;
927 	    scp->proc = NULL;
928 	    scp->pid = 0;
929 	    DPRINTF(5, ("VT_AUTO, "));
930 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
931 		cnavailable(sc_consptr, TRUE);
932 	    /* were we in the middle of the vty switching process? */
933 	    if (finish_vt_rel(scp, TRUE, &s) == 0)
934 		DPRINTF(5, ("reset WAIT_REL, "));
935 	    if (finish_vt_acq(scp) == 0)
936 		DPRINTF(5, ("reset WAIT_ACQ, "));
937 	} else {
938 	    if (!ISSIGVALID(mode->relsig) || !ISSIGVALID(mode->acqsig)
939 		|| !ISSIGVALID(mode->frsig)) {
940 		splx(s);
941 		DPRINTF(5, ("error EINVAL\n"));
942 		return EINVAL;
943 	    }
944 	    DPRINTF(5, ("VT_PROCESS %d, ", td->td_proc->p_pid));
945 	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
946 	    scp->proc = td->td_proc;
947 	    scp->pid = scp->proc->p_pid;
948 	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
949 		cnavailable(sc_consptr, FALSE);
950 	}
951 	splx(s);
952 	DPRINTF(5, ("\n"));
953 	return 0;
954     }
955 
956     case VT_GETMODE:    	/* get screen switcher mode */
957 	bcopy(&scp->smode, data, sizeof(struct vt_mode));
958 	return 0;
959 
960     case VT_RELDISP:    	/* screen switcher ioctl */
961 	s = spltty();
962 	/*
963 	 * This must be the current vty which is in the VT_PROCESS
964 	 * switching mode...
965 	 */
966 	if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
967 	    splx(s);
968 	    return EINVAL;
969 	}
970 	/* ...and this process is controlling it. */
971 	if (scp->proc != td->td_proc) {
972 	    splx(s);
973 	    return EPERM;
974 	}
975 	error = EINVAL;
976 	switch(*(intptr_t *)data) {
977 	case VT_FALSE:  	/* user refuses to release screen, abort */
978 	    if ((error = finish_vt_rel(scp, FALSE, &s)) == 0)
979 		DPRINTF(5, ("sc%d: VT_FALSE\n", sc->unit));
980 	    break;
981 	case VT_TRUE:   	/* user has released screen, go on */
982 	    if ((error = finish_vt_rel(scp, TRUE, &s)) == 0)
983 		DPRINTF(5, ("sc%d: VT_TRUE\n", sc->unit));
984 	    break;
985 	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
986 	    if ((error = finish_vt_acq(scp)) == 0)
987 		DPRINTF(5, ("sc%d: VT_ACKACQ\n", sc->unit));
988 	    break;
989 	default:
990 	    break;
991 	}
992 	splx(s);
993 	return error;
994 
995     case VT_OPENQRY:    	/* return free virtual console */
996 	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
997 	    tp = VIRTUAL_TTY(sc, i);
998 	    if (!ISTTYOPEN(tp)) {
999 		*(int *)data = i + 1;
1000 		return 0;
1001 	    }
1002 	}
1003 	return EINVAL;
1004 
1005     case VT_ACTIVATE:   	/* switch to screen *data */
1006 	i = (*(intptr_t *)data == 0) ? scp->index : (*(intptr_t *)data - 1);
1007 	s = spltty();
1008 	sc_clean_up(sc->cur_scp);
1009 	splx(s);
1010 	return sc_switch_scr(sc, i);
1011 
1012     case VT_WAITACTIVE: 	/* wait for switch to occur */
1013 	i = (*(intptr_t *)data == 0) ? scp->index : (*(intptr_t *)data - 1);
1014 	if ((i < sc->first_vty) || (i >= sc->first_vty + sc->vtys))
1015 	    return EINVAL;
1016 	s = spltty();
1017 	error = sc_clean_up(sc->cur_scp);
1018 	splx(s);
1019 	if (error)
1020 	    return error;
1021 	scp = sc_get_stat(SC_DEV(sc, i));
1022 	if (scp == scp->sc->cur_scp)
1023 	    return 0;
1024 	while ((error=tsleep(&scp->smode, PZERO|PCATCH,
1025 			     "waitvt", 0)) == ERESTART) ;
1026 	return error;
1027 
1028     case VT_GETACTIVE:		/* get active vty # */
1029 	*(int *)data = sc->cur_scp->index + 1;
1030 	return 0;
1031 
1032     case VT_GETINDEX:		/* get this vty # */
1033 	*(int *)data = scp->index + 1;
1034 	return 0;
1035 
1036     case VT_LOCKSWITCH:		/* prevent vty switching */
1037 	if ((*(int *)data) & 0x01)
1038 	    sc->flags |= SC_SCRN_VTYLOCK;
1039 	else
1040 	    sc->flags &= ~SC_SCRN_VTYLOCK;
1041 	return 0;
1042 
1043     case KDENABIO:      	/* allow io operations */
1044 	error = suser(td);
1045 	if (error != 0)
1046 	    return error;
1047 	error = securelevel_gt(td->td_ucred, 0);
1048 	if (error != 0)
1049 		return error;
1050 #ifdef __i386__
1051 	td->td_frame->tf_eflags |= PSL_IOPL;
1052 #elif defined(__amd64__)
1053 	td->td_frame->tf_rflags |= PSL_IOPL;
1054 #endif
1055 	return 0;
1056 
1057     case KDDISABIO:     	/* disallow io operations (default) */
1058 #ifdef __i386__
1059 	td->td_frame->tf_eflags &= ~PSL_IOPL;
1060 #elif defined(__amd64__)
1061 	td->td_frame->tf_rflags &= ~PSL_IOPL;
1062 #endif
1063 	return 0;
1064 
1065     case KDSKBSTATE:    	/* set keyboard state (locks) */
1066 	if (*(int *)data & ~LOCK_MASK)
1067 	    return EINVAL;
1068 	scp->status &= ~LOCK_MASK;
1069 	scp->status |= *(int *)data;
1070 	if (scp == sc->cur_scp)
1071 	    update_kbd_state(scp, scp->status, LOCK_MASK);
1072 	return 0;
1073 
1074     case KDGKBSTATE:    	/* get keyboard state (locks) */
1075 	if (scp == sc->cur_scp)
1076 	    save_kbd_state(scp);
1077 	*(int *)data = scp->status & LOCK_MASK;
1078 	return 0;
1079 
1080     case KDGETREPEAT:      	/* get keyboard repeat & delay rates */
1081     case KDSETREPEAT:      	/* set keyboard repeat & delay rates (new) */
1082 	error = kbd_ioctl(sc->kbd, cmd, data);
1083 	if (error == ENOIOCTL)
1084 	    error = ENODEV;
1085 	return error;
1086 
1087     case KDSETRAD:      	/* set keyboard repeat & delay rates (old) */
1088 	if (*(int *)data & ~0x7f)
1089 	    return EINVAL;
1090 	error = kbd_ioctl(sc->kbd, cmd, data);
1091 	if (error == ENOIOCTL)
1092 	    error = ENODEV;
1093 	return error;
1094 
1095     case KDSKBMODE:     	/* set keyboard mode */
1096 	switch (*(int *)data) {
1097 	case K_XLATE:   	/* switch to XLT ascii mode */
1098 	case K_RAW: 		/* switch to RAW scancode mode */
1099 	case K_CODE: 		/* switch to CODE mode */
1100 	    scp->kbd_mode = *(int *)data;
1101 	    if (scp == sc->cur_scp)
1102 		kbd_ioctl(sc->kbd, cmd, data);
1103 	    return 0;
1104 	default:
1105 	    return EINVAL;
1106 	}
1107 	/* NOT REACHED */
1108 
1109     case KDGKBMODE:     	/* get keyboard mode */
1110 	*(int *)data = scp->kbd_mode;
1111 	return 0;
1112 
1113     case KDGKBINFO:
1114 	error = kbd_ioctl(sc->kbd, cmd, data);
1115 	if (error == ENOIOCTL)
1116 	    error = ENODEV;
1117 	return error;
1118 
1119     case KDMKTONE:      	/* sound the bell */
1120 	if (*(int*)data)
1121 	    sc_bell(scp, (*(int*)data)&0xffff,
1122 		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1123 	else
1124 	    sc_bell(scp, scp->bell_pitch, scp->bell_duration);
1125 	return 0;
1126 
1127     case KIOCSOUND:     	/* make tone (*data) hz */
1128 	if (scp == sc->cur_scp) {
1129 	    if (*(int *)data)
1130 		return sc_tone(*(int *)data);
1131 	    else
1132 		return sc_tone(0);
1133 	}
1134 	return 0;
1135 
1136     case KDGKBTYPE:     	/* get keyboard type */
1137 	error = kbd_ioctl(sc->kbd, cmd, data);
1138 	if (error == ENOIOCTL) {
1139 	    /* always return something? XXX */
1140 	    *(int *)data = 0;
1141 	}
1142 	return 0;
1143 
1144     case KDSETLED:      	/* set keyboard LED status */
1145 	if (*(int *)data & ~LED_MASK)	/* FIXME: LOCK_MASK? */
1146 	    return EINVAL;
1147 	scp->status &= ~LED_MASK;
1148 	scp->status |= *(int *)data;
1149 	if (scp == sc->cur_scp)
1150 	    update_kbd_leds(scp, scp->status);
1151 	return 0;
1152 
1153     case KDGETLED:      	/* get keyboard LED status */
1154 	if (scp == sc->cur_scp)
1155 	    save_kbd_state(scp);
1156 	*(int *)data = scp->status & LED_MASK;
1157 	return 0;
1158 
1159     case CONS_SETKBD: 		/* set the new keyboard */
1160 	{
1161 	    keyboard_t *newkbd;
1162 
1163 	    s = spltty();
1164 	    newkbd = kbd_get_keyboard(*(int *)data);
1165 	    if (newkbd == NULL) {
1166 		splx(s);
1167 		return EINVAL;
1168 	    }
1169 	    error = 0;
1170 	    if (sc->kbd != newkbd) {
1171 		i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
1172 				 (void *)&sc->keyboard, sckbdevent, sc);
1173 		/* i == newkbd->kb_index */
1174 		if (i >= 0) {
1175 		    if (sc->kbd != NULL) {
1176 			save_kbd_state(sc->cur_scp);
1177 			kbd_release(sc->kbd, (void *)&sc->keyboard);
1178 		    }
1179 		    sc->kbd = kbd_get_keyboard(i); /* sc->kbd == newkbd */
1180 		    sc->keyboard = i;
1181 		    kbd_ioctl(sc->kbd, KDSKBMODE,
1182 			      (caddr_t)&sc->cur_scp->kbd_mode);
1183 		    update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1184 				     LOCK_MASK);
1185 		} else {
1186 		    error = EPERM;	/* XXX */
1187 		}
1188 	    }
1189 	    splx(s);
1190 	    return error;
1191 	}
1192 
1193     case CONS_RELKBD: 		/* release the current keyboard */
1194 	s = spltty();
1195 	error = 0;
1196 	if (sc->kbd != NULL) {
1197 	    save_kbd_state(sc->cur_scp);
1198 	    error = kbd_release(sc->kbd, (void *)&sc->keyboard);
1199 	    if (error == 0) {
1200 		sc->kbd = NULL;
1201 		sc->keyboard = -1;
1202 	    }
1203 	}
1204 	splx(s);
1205 	return error;
1206 
1207     case CONS_GETTERM:		/* get the current terminal emulator info */
1208 	{
1209 	    sc_term_sw_t *sw;
1210 
1211 	    if (((term_info_t *)data)->ti_index == 0) {
1212 		sw = scp->tsw;
1213 	    } else {
1214 		sw = sc_term_match_by_number(((term_info_t *)data)->ti_index);
1215 	    }
1216 	    if (sw != NULL) {
1217 		strncpy(((term_info_t *)data)->ti_name, sw->te_name,
1218 			sizeof(((term_info_t *)data)->ti_name));
1219 		strncpy(((term_info_t *)data)->ti_desc, sw->te_desc,
1220 			sizeof(((term_info_t *)data)->ti_desc));
1221 		((term_info_t *)data)->ti_flags = 0;
1222 		return 0;
1223 	    } else {
1224 		((term_info_t *)data)->ti_name[0] = '\0';
1225 		((term_info_t *)data)->ti_desc[0] = '\0';
1226 		((term_info_t *)data)->ti_flags = 0;
1227 		return EINVAL;
1228 	    }
1229 	}
1230 
1231     case CONS_SETTERM:		/* set the current terminal emulator */
1232 	s = spltty();
1233 	error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
1234 	/* FIXME: what if scp == sc_console! XXX */
1235 	splx(s);
1236 	return error;
1237 
1238     case GIO_SCRNMAP:   	/* get output translation table */
1239 	bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
1240 	return 0;
1241 
1242     case PIO_SCRNMAP:   	/* set output translation table */
1243 	bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
1244 	for (i=0; i<sizeof(sc->scr_map); i++) {
1245 	    sc->scr_rmap[sc->scr_map[i]] = i;
1246 	}
1247 	return 0;
1248 
1249     case GIO_KEYMAP:		/* get keyboard translation table */
1250     case PIO_KEYMAP:		/* set keyboard translation table */
1251     case GIO_DEADKEYMAP:	/* get accent key translation table */
1252     case PIO_DEADKEYMAP:	/* set accent key translation table */
1253     case GETFKEY:		/* get function key string */
1254     case SETFKEY:		/* set function key string */
1255 	error = kbd_ioctl(sc->kbd, cmd, data);
1256 	if (error == ENOIOCTL)
1257 	    error = ENODEV;
1258 	return error;
1259 
1260 #ifndef SC_NO_FONT_LOADING
1261 
1262     case PIO_FONT8x8:   	/* set 8x8 dot font */
1263 	if (!ISFONTAVAIL(sc->adp->va_flags))
1264 	    return ENXIO;
1265 	bcopy(data, sc->font_8, 8*256);
1266 	sc->fonts_loaded |= FONT_8;
1267 	/*
1268 	 * FONT KLUDGE
1269 	 * Always use the font page #0. XXX
1270 	 * Don't load if the current font size is not 8x8.
1271 	 */
1272 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
1273 	    sc_load_font(sc->cur_scp, 0, 8, sc->font_8, 0, 256);
1274 	return 0;
1275 
1276     case GIO_FONT8x8:   	/* get 8x8 dot font */
1277 	if (!ISFONTAVAIL(sc->adp->va_flags))
1278 	    return ENXIO;
1279 	if (sc->fonts_loaded & FONT_8) {
1280 	    bcopy(sc->font_8, data, 8*256);
1281 	    return 0;
1282 	}
1283 	else
1284 	    return ENXIO;
1285 
1286     case PIO_FONT8x14:  	/* set 8x14 dot font */
1287 	if (!ISFONTAVAIL(sc->adp->va_flags))
1288 	    return ENXIO;
1289 	bcopy(data, sc->font_14, 14*256);
1290 	sc->fonts_loaded |= FONT_14;
1291 	/*
1292 	 * FONT KLUDGE
1293 	 * Always use the font page #0. XXX
1294 	 * Don't load if the current font size is not 8x14.
1295 	 */
1296 	if (ISTEXTSC(sc->cur_scp)
1297 	    && (sc->cur_scp->font_size >= 14)
1298 	    && (sc->cur_scp->font_size < 16))
1299 	    sc_load_font(sc->cur_scp, 0, 14, sc->font_14, 0, 256);
1300 	return 0;
1301 
1302     case GIO_FONT8x14:  	/* get 8x14 dot font */
1303 	if (!ISFONTAVAIL(sc->adp->va_flags))
1304 	    return ENXIO;
1305 	if (sc->fonts_loaded & FONT_14) {
1306 	    bcopy(sc->font_14, data, 14*256);
1307 	    return 0;
1308 	}
1309 	else
1310 	    return ENXIO;
1311 
1312     case PIO_FONT8x16:  	/* set 8x16 dot font */
1313 	if (!ISFONTAVAIL(sc->adp->va_flags))
1314 	    return ENXIO;
1315 	bcopy(data, sc->font_16, 16*256);
1316 	sc->fonts_loaded |= FONT_16;
1317 	/*
1318 	 * FONT KLUDGE
1319 	 * Always use the font page #0. XXX
1320 	 * Don't load if the current font size is not 8x16.
1321 	 */
1322 	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
1323 	    sc_load_font(sc->cur_scp, 0, 16, sc->font_16, 0, 256);
1324 	return 0;
1325 
1326     case GIO_FONT8x16:  	/* get 8x16 dot font */
1327 	if (!ISFONTAVAIL(sc->adp->va_flags))
1328 	    return ENXIO;
1329 	if (sc->fonts_loaded & FONT_16) {
1330 	    bcopy(sc->font_16, data, 16*256);
1331 	    return 0;
1332 	}
1333 	else
1334 	    return ENXIO;
1335 
1336 #endif /* SC_NO_FONT_LOADING */
1337 
1338 #ifdef PC98
1339     case ADJUST_CLOCK:	/* /dev/rtc for 98note resume */
1340 	inittodr(0);
1341 	return 0;
1342 #endif
1343 
1344     default:
1345 	break;
1346     }
1347 
1348     return (ttyioctl(dev, cmd, data, flag, td));
1349 }
1350 
1351 static void
1352 scstart(struct tty *tp)
1353 {
1354     struct clist *rbp;
1355     int s, len;
1356     u_char buf[PCBURST];
1357     scr_stat *scp = sc_get_stat(tp->t_dev);
1358 
1359     if (scp->status & SLKED ||
1360 	(scp == scp->sc->cur_scp && scp->sc->blink_in_progress))
1361 	return;
1362     s = spltty();
1363     if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
1364 	tp->t_state |= TS_BUSY;
1365 	rbp = &tp->t_outq;
1366 	while (rbp->c_cc) {
1367 	    len = q_to_b(rbp, buf, PCBURST);
1368 	    splx(s);
1369 	    sc_puts(scp, buf, len);
1370 	    s = spltty();
1371 	}
1372 	tp->t_state &= ~TS_BUSY;
1373 	ttwwakeup(tp);
1374     }
1375     splx(s);
1376 }
1377 
1378 static void
1379 sccnprobe(struct consdev *cp)
1380 {
1381     int unit;
1382     int flags;
1383 
1384     cp->cn_pri = sc_get_cons_priority(&unit, &flags);
1385 
1386     /* a video card is always required */
1387     if (!scvidprobe(unit, flags, TRUE))
1388 	cp->cn_pri = CN_DEAD;
1389 
1390     /* syscons will become console even when there is no keyboard */
1391     sckbdprobe(unit, flags, TRUE);
1392 
1393     if (cp->cn_pri == CN_DEAD)
1394 	return;
1395 
1396     /* initialize required fields */
1397     sprintf(cp->cn_name, "consolectl");
1398 }
1399 
1400 static void
1401 sccninit(struct consdev *cp)
1402 {
1403     int unit;
1404     int flags;
1405 
1406     sc_get_cons_priority(&unit, &flags);
1407     scinit(unit, flags | SC_KERNEL_CONSOLE);
1408     sc_console_unit = unit;
1409     sc_console = sc_get_stat(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1410     sc_consptr = cp;
1411 }
1412 
1413 static void
1414 sccnterm(struct consdev *cp)
1415 {
1416     /* we are not the kernel console any more, release everything */
1417 
1418     if (sc_console_unit < 0)
1419 	return;			/* shouldn't happen */
1420 
1421 #if 0 /* XXX */
1422     sc_clear_screen(sc_console);
1423     sccnupdate(sc_console);
1424 #endif
1425 
1426     scterm(sc_console_unit, SC_KERNEL_CONSOLE);
1427     sc_console_unit = -1;
1428     sc_console = NULL;
1429 }
1430 
1431 static void
1432 sccnputc(struct consdev *cd, int c)
1433 {
1434     u_char buf[1];
1435     scr_stat *scp = sc_console;
1436     void *save;
1437 #ifndef SC_NO_HISTORY
1438     struct tty *tp;
1439 #endif /* !SC_NO_HISTORY */
1440     int s;
1441 
1442     /* assert(sc_console != NULL) */
1443 
1444 #ifndef SC_NO_HISTORY
1445     if (scp == scp->sc->cur_scp && scp->status & SLKED) {
1446 	scp->status &= ~SLKED;
1447 	update_kbd_state(scp, scp->status, SLKED);
1448 	if (scp->status & BUFFER_SAVED) {
1449 	    if (!sc_hist_restore(scp))
1450 		sc_remove_cutmarking(scp);
1451 	    scp->status &= ~BUFFER_SAVED;
1452 	    scp->status |= CURSOR_ENABLED;
1453 	    sc_draw_cursor_image(scp);
1454 	}
1455 	tp = VIRTUAL_TTY(scp->sc, scp->index);
1456 	if (ISTTYOPEN(tp))
1457 	    scstart(tp);
1458     }
1459 #endif /* !SC_NO_HISTORY */
1460 
1461     save = scp->ts;
1462     if (kernel_console_ts != NULL)
1463 	scp->ts = kernel_console_ts;
1464     buf[0] = c;
1465     sc_puts(scp, buf, 1);
1466     scp->ts = save;
1467 
1468     s = spltty();	/* block sckbdevent and scrn_timer */
1469     sccnupdate(scp);
1470     splx(s);
1471 }
1472 
1473 static int
1474 sccngetc(struct consdev *cd)
1475 {
1476     return sccngetch(0);
1477 }
1478 
1479 static int
1480 sccncheckc(struct consdev *cd)
1481 {
1482     return sccngetch(SCGETC_NONBLOCK);
1483 }
1484 
1485 static void
1486 sccndbctl(struct consdev *cd, int on)
1487 {
1488     /* assert(sc_console_unit >= 0) */
1489     /* try to switch to the kernel console screen */
1490     if (on && debugger == 0) {
1491 	/*
1492 	 * TRY to make sure the screen saver is stopped,
1493 	 * and the screen is updated before switching to
1494 	 * the vty0.
1495 	 */
1496 	scrn_timer(NULL);
1497 	if (!cold
1498 	    && sc_console->sc->cur_scp->smode.mode == VT_AUTO
1499 	    && sc_console->smode.mode == VT_AUTO) {
1500 	    sc_console->sc->cur_scp->status |= MOUSE_HIDDEN;
1501 	    ++debugger;		/* XXX */
1502 #ifdef DDB
1503 	    /* unlock vty switching */
1504 	    sc_console->sc->flags &= ~SC_SCRN_VTYLOCK;
1505 #endif
1506 	    sc_switch_scr(sc_console->sc, sc_console->index);
1507 	    --debugger;		/* XXX */
1508 	}
1509     }
1510     if (on)
1511 	++debugger;
1512     else
1513 	--debugger;
1514 }
1515 
1516 static int
1517 sccngetch(int flags)
1518 {
1519     static struct fkeytab fkey;
1520     static int fkeycp;
1521     scr_stat *scp;
1522     u_char *p;
1523     int cur_mode;
1524     int s = spltty();	/* block sckbdevent and scrn_timer while we poll */
1525     int c;
1526 
1527     /* assert(sc_console != NULL) */
1528 
1529     /*
1530      * Stop the screen saver and update the screen if necessary.
1531      * What if we have been running in the screen saver code... XXX
1532      */
1533     sc_touch_scrn_saver();
1534     scp = sc_console->sc->cur_scp;	/* XXX */
1535     sccnupdate(scp);
1536 
1537     if (fkeycp < fkey.len) {
1538 	splx(s);
1539 	return fkey.str[fkeycp++];
1540     }
1541 
1542     if (scp->sc->kbd == NULL) {
1543 	splx(s);
1544 	return -1;
1545     }
1546 
1547     /*
1548      * Make sure the keyboard is accessible even when the kbd device
1549      * driver is disabled.
1550      */
1551     kbd_enable(scp->sc->kbd);
1552 
1553     /* we shall always use the keyboard in the XLATE mode here */
1554     cur_mode = scp->kbd_mode;
1555     scp->kbd_mode = K_XLATE;
1556     kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1557 
1558     kbd_poll(scp->sc->kbd, TRUE);
1559     c = scgetc(scp->sc, SCGETC_CN | flags);
1560     kbd_poll(scp->sc->kbd, FALSE);
1561 
1562     scp->kbd_mode = cur_mode;
1563     kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1564     kbd_disable(scp->sc->kbd);
1565     splx(s);
1566 
1567     switch (KEYFLAGS(c)) {
1568     case 0:	/* normal char */
1569 	return KEYCHAR(c);
1570     case FKEY:	/* function key */
1571 	p = kbd_get_fkeystr(scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
1572 	fkey.len = fkeycp;
1573 	if ((p != NULL) && (fkey.len > 0)) {
1574 	    bcopy(p, fkey.str, fkey.len);
1575 	    fkeycp = 1;
1576 	    return fkey.str[0];
1577 	}
1578 	return c;	/* XXX */
1579     case NOKEY:
1580     case ERRKEY:
1581     default:
1582 	return -1;
1583     }
1584     /* NOT REACHED */
1585 }
1586 
1587 static void
1588 sccnupdate(scr_stat *scp)
1589 {
1590     /* this is a cut-down version of scrn_timer()... */
1591 
1592     if (scp->sc->font_loading_in_progress || scp->sc->videoio_in_progress)
1593 	return;
1594 
1595     if (debugger > 0 || panicstr || shutdown_in_progress) {
1596 	sc_touch_scrn_saver();
1597     } else if (scp != scp->sc->cur_scp) {
1598 	return;
1599     }
1600 
1601     if (!run_scrn_saver)
1602 	scp->sc->flags &= ~SC_SCRN_IDLE;
1603 #ifdef DEV_SPLASH
1604     if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
1605 	if (scp->sc->flags & SC_SCRN_BLANKED)
1606             stop_scrn_saver(scp->sc, current_saver);
1607 #endif
1608 
1609     if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress
1610 	|| scp->sc->switch_in_progress)
1611 	return;
1612     /*
1613      * FIXME: unlike scrn_timer(), we call scrn_update() from here even
1614      * when write_in_progress is non-zero.  XXX
1615      */
1616 
1617     if (!ISGRAPHSC(scp) && !(scp->sc->flags & SC_SCRN_BLANKED))
1618 	scrn_update(scp, TRUE);
1619 }
1620 
1621 static void
1622 scrn_timer(void *arg)
1623 {
1624 #ifndef PC98
1625     static int kbd_interval = 0;
1626 #endif
1627     struct timeval tv;
1628     sc_softc_t *sc;
1629     scr_stat *scp;
1630     int again;
1631     int s;
1632 
1633     again = (arg != NULL);
1634     if (arg != NULL)
1635 	sc = (sc_softc_t *)arg;
1636     else if (sc_console != NULL)
1637 	sc = sc_console->sc;
1638     else
1639 	return;
1640 
1641     /* don't do anything when we are performing some I/O operations */
1642     if (sc->font_loading_in_progress || sc->videoio_in_progress) {
1643 	if (again)
1644 	    timeout(scrn_timer, sc, hz / 10);
1645 	return;
1646     }
1647     s = spltty();
1648 
1649 #ifndef PC98
1650     if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
1651 	/* try to allocate a keyboard automatically */
1652 	if (++kbd_interval >= 25) {
1653 	    sc->keyboard = kbd_allocate("*", -1, (void *)&sc->keyboard,
1654 					sckbdevent, sc);
1655 	    if (sc->keyboard >= 0) {
1656 		sc->kbd = kbd_get_keyboard(sc->keyboard);
1657 		kbd_ioctl(sc->kbd, KDSKBMODE,
1658 			  (caddr_t)&sc->cur_scp->kbd_mode);
1659 		update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1660 				 LOCK_MASK);
1661 	    }
1662 	    kbd_interval = 0;
1663 	}
1664     }
1665 #endif /* PC98 */
1666 
1667     /* find the vty to update */
1668     scp = sc->cur_scp;
1669 
1670     /* should we stop the screen saver? */
1671     getmicrouptime(&tv);
1672     if (debugger > 0 || panicstr || shutdown_in_progress)
1673 	sc_touch_scrn_saver();
1674     if (run_scrn_saver) {
1675 	if (tv.tv_sec > sc->scrn_time_stamp + scrn_blank_time)
1676 	    sc->flags |= SC_SCRN_IDLE;
1677 	else
1678 	    sc->flags &= ~SC_SCRN_IDLE;
1679     } else {
1680 	sc->scrn_time_stamp = tv.tv_sec;
1681 	sc->flags &= ~SC_SCRN_IDLE;
1682 	if (scrn_blank_time > 0)
1683 	    run_scrn_saver = TRUE;
1684     }
1685 #ifdef DEV_SPLASH
1686     if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
1687 	if (sc->flags & SC_SCRN_BLANKED)
1688             stop_scrn_saver(sc, current_saver);
1689 #endif
1690 
1691     /* should we just return ? */
1692     if (sc->blink_in_progress || sc->switch_in_progress
1693 	|| sc->write_in_progress) {
1694 	if (again)
1695 	    timeout(scrn_timer, sc, hz / 10);
1696 	splx(s);
1697 	return;
1698     }
1699 
1700     /* Update the screen */
1701     scp = sc->cur_scp;		/* cur_scp may have changed... */
1702     if (!ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
1703 	scrn_update(scp, TRUE);
1704 
1705 #ifdef DEV_SPLASH
1706     /* should we activate the screen saver? */
1707     if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
1708 	if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
1709 	    (*current_saver)(sc, TRUE);
1710 #endif
1711 
1712     if (again)
1713 	timeout(scrn_timer, sc, hz / 25);
1714     splx(s);
1715 }
1716 
1717 static int
1718 and_region(int *s1, int *e1, int s2, int e2)
1719 {
1720     if (*e1 < s2 || e2 < *s1)
1721 	return FALSE;
1722     *s1 = imax(*s1, s2);
1723     *e1 = imin(*e1, e2);
1724     return TRUE;
1725 }
1726 
1727 static void
1728 scrn_update(scr_stat *scp, int show_cursor)
1729 {
1730     int start;
1731     int end;
1732     int s;
1733     int e;
1734 
1735     /* assert(scp == scp->sc->cur_scp) */
1736 
1737     ++scp->sc->videoio_in_progress;
1738 
1739 #ifndef SC_NO_CUTPASTE
1740     /* remove the previous mouse pointer image if necessary */
1741     if (scp->status & MOUSE_VISIBLE) {
1742 	s = scp->mouse_pos;
1743 	e = scp->mouse_pos + scp->xsize + 1;
1744 	if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN))
1745 	    || and_region(&s, &e, scp->start, scp->end)
1746 	    || ((scp->status & CURSOR_ENABLED) &&
1747 		(scp->cursor_pos != scp->cursor_oldpos) &&
1748 		(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos)
1749 		 || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) {
1750 	    sc_remove_mouse_image(scp);
1751 	    if (scp->end >= scp->xsize*scp->ysize)
1752 		scp->end = scp->xsize*scp->ysize - 1;
1753 	}
1754     }
1755 #endif /* !SC_NO_CUTPASTE */
1756 
1757 #if 1
1758     /* debug: XXX */
1759     if (scp->end >= scp->xsize*scp->ysize) {
1760 	printf("scrn_update(): scp->end %d > size_of_screen!!\n", scp->end);
1761 	scp->end = scp->xsize*scp->ysize - 1;
1762     }
1763     if (scp->start < 0) {
1764 	printf("scrn_update(): scp->start %d < 0\n", scp->start);
1765 	scp->start = 0;
1766     }
1767 #endif
1768 
1769     /* update screen image */
1770     if (scp->start <= scp->end)  {
1771 	if (scp->mouse_cut_end >= 0) {
1772 	    /* there is a marked region for cut & paste */
1773 	    if (scp->mouse_cut_start <= scp->mouse_cut_end) {
1774 		start = scp->mouse_cut_start;
1775 		end = scp->mouse_cut_end;
1776 	    } else {
1777 		start = scp->mouse_cut_end;
1778 		end = scp->mouse_cut_start - 1;
1779 	    }
1780 	    s = start;
1781 	    e = end;
1782 	    /* does the cut-mark region overlap with the update region? */
1783 	    if (and_region(&s, &e, scp->start, scp->end)) {
1784 		(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
1785 		s = 0;
1786 		e = start - 1;
1787 		if (and_region(&s, &e, scp->start, scp->end))
1788 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1789 		s = end + 1;
1790 		e = scp->xsize*scp->ysize - 1;
1791 		if (and_region(&s, &e, scp->start, scp->end))
1792 		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1793 	    } else {
1794 		(*scp->rndr->draw)(scp, scp->start,
1795 				   scp->end - scp->start + 1, FALSE);
1796 	    }
1797 	} else {
1798 	    (*scp->rndr->draw)(scp, scp->start,
1799 			       scp->end - scp->start + 1, FALSE);
1800 	}
1801     }
1802 
1803     /* we are not to show the cursor and the mouse pointer... */
1804     if (!show_cursor) {
1805         scp->end = 0;
1806         scp->start = scp->xsize*scp->ysize - 1;
1807 	--scp->sc->videoio_in_progress;
1808 	return;
1809     }
1810 
1811     /* update cursor image */
1812     if (scp->status & CURSOR_ENABLED) {
1813 	s = scp->start;
1814 	e = scp->end;
1815         /* did cursor move since last time ? */
1816         if (scp->cursor_pos != scp->cursor_oldpos) {
1817             /* do we need to remove old cursor image ? */
1818             if (!and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
1819                 sc_remove_cursor_image(scp);
1820             sc_draw_cursor_image(scp);
1821         } else {
1822             if (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos))
1823 		/* cursor didn't move, but has been overwritten */
1824 		sc_draw_cursor_image(scp);
1825 	    else if (scp->curs_attr.flags & CONS_BLINK_CURSOR)
1826 		/* if it's a blinking cursor, update it */
1827 		(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
1828 					   sc_inside_cutmark(scp,
1829 					       scp->cursor_pos));
1830         }
1831     }
1832 
1833 #ifndef SC_NO_CUTPASTE
1834     /* update "pseudo" mouse pointer image */
1835     if (scp->sc->flags & SC_MOUSE_ENABLED) {
1836 	if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
1837 	    scp->status &= ~MOUSE_MOVED;
1838 	    sc_draw_mouse_image(scp);
1839 	}
1840     }
1841 #endif /* SC_NO_CUTPASTE */
1842 
1843     scp->end = 0;
1844     scp->start = scp->xsize*scp->ysize - 1;
1845 
1846     --scp->sc->videoio_in_progress;
1847 }
1848 
1849 #ifdef DEV_SPLASH
1850 static int
1851 scsplash_callback(int event, void *arg)
1852 {
1853     sc_softc_t *sc;
1854     int error;
1855 
1856     sc = (sc_softc_t *)arg;
1857 
1858     switch (event) {
1859     case SPLASH_INIT:
1860 	if (add_scrn_saver(scsplash_saver) == 0) {
1861 	    sc->flags &= ~SC_SAVER_FAILED;
1862 	    run_scrn_saver = TRUE;
1863 	    if (cold && !(boothowto & (RB_VERBOSE | RB_CONFIG))) {
1864 		scsplash_stick(TRUE);
1865 		(*current_saver)(sc, TRUE);
1866 	    }
1867 	}
1868 	return 0;
1869 
1870     case SPLASH_TERM:
1871 	if (current_saver == scsplash_saver) {
1872 	    scsplash_stick(FALSE);
1873 	    error = remove_scrn_saver(scsplash_saver);
1874 	    if (error)
1875 		return error;
1876 	}
1877 	return 0;
1878 
1879     default:
1880 	return EINVAL;
1881     }
1882 }
1883 
1884 static void
1885 scsplash_saver(sc_softc_t *sc, int show)
1886 {
1887     static int busy = FALSE;
1888     scr_stat *scp;
1889 
1890     if (busy)
1891 	return;
1892     busy = TRUE;
1893 
1894     scp = sc->cur_scp;
1895     if (show) {
1896 	if (!(sc->flags & SC_SAVER_FAILED)) {
1897 	    if (!(sc->flags & SC_SCRN_BLANKED))
1898 		set_scrn_saver_mode(scp, -1, NULL, 0);
1899 	    switch (splash(sc->adp, TRUE)) {
1900 	    case 0:		/* succeeded */
1901 		break;
1902 	    case EAGAIN:	/* try later */
1903 		restore_scrn_saver_mode(scp, FALSE);
1904 		sc_touch_scrn_saver();		/* XXX */
1905 		break;
1906 	    default:
1907 		sc->flags |= SC_SAVER_FAILED;
1908 		scsplash_stick(FALSE);
1909 		restore_scrn_saver_mode(scp, TRUE);
1910 		printf("scsplash_saver(): failed to put up the image\n");
1911 		break;
1912 	    }
1913 	}
1914     } else if (!sticky_splash) {
1915 	if ((sc->flags & SC_SCRN_BLANKED) && (splash(sc->adp, FALSE) == 0))
1916 	    restore_scrn_saver_mode(scp, TRUE);
1917     }
1918     busy = FALSE;
1919 }
1920 
1921 static int
1922 add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
1923 {
1924 #if 0
1925     int error;
1926 
1927     if (current_saver != none_saver) {
1928 	error = remove_scrn_saver(current_saver);
1929 	if (error)
1930 	    return error;
1931     }
1932 #endif
1933     if (current_saver != none_saver)
1934 	return EBUSY;
1935 
1936     run_scrn_saver = FALSE;
1937     saver_mode = CONS_LKM_SAVER;
1938     current_saver = this_saver;
1939     return 0;
1940 }
1941 
1942 static int
1943 remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
1944 {
1945     if (current_saver != this_saver)
1946 	return EINVAL;
1947 
1948 #if 0
1949     /*
1950      * In order to prevent `current_saver' from being called by
1951      * the timeout routine `scrn_timer()' while we manipulate
1952      * the saver list, we shall set `current_saver' to `none_saver'
1953      * before stopping the current saver, rather than blocking by `splXX()'.
1954      */
1955     current_saver = none_saver;
1956     if (scrn_blanked)
1957         stop_scrn_saver(this_saver);
1958 #endif
1959 
1960     /* unblank all blanked screens */
1961     wait_scrn_saver_stop(NULL);
1962     if (scrn_blanked)
1963 	return EBUSY;
1964 
1965     current_saver = none_saver;
1966     return 0;
1967 }
1968 
1969 static int
1970 set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
1971 {
1972     int s;
1973 
1974     /* assert(scp == scp->sc->cur_scp) */
1975     s = spltty();
1976     if (!ISGRAPHSC(scp))
1977 	sc_remove_cursor_image(scp);
1978     scp->splash_save_mode = scp->mode;
1979     scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
1980     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
1981     scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
1982     scp->sc->flags |= SC_SCRN_BLANKED;
1983     ++scrn_blanked;
1984     splx(s);
1985     if (mode < 0)
1986 	return 0;
1987     scp->mode = mode;
1988     if (set_mode(scp) == 0) {
1989 	if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
1990 	    scp->status |= GRAPHICS_MODE;
1991 #ifndef SC_NO_PALETTE_LOADING
1992 	if (pal != NULL)
1993 	    load_palette(scp->sc->adp, pal);
1994 #endif
1995 	sc_set_border(scp, border);
1996 	return 0;
1997     } else {
1998 	s = spltty();
1999 	scp->mode = scp->splash_save_mode;
2000 	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2001 	scp->status |= scp->splash_save_status;
2002 	splx(s);
2003 	return 1;
2004     }
2005 }
2006 
2007 static int
2008 restore_scrn_saver_mode(scr_stat *scp, int changemode)
2009 {
2010     int mode;
2011     int status;
2012     int s;
2013 
2014     /* assert(scp == scp->sc->cur_scp) */
2015     s = spltty();
2016     mode = scp->mode;
2017     status = scp->status;
2018     scp->mode = scp->splash_save_mode;
2019     scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2020     scp->status |= scp->splash_save_status;
2021     scp->sc->flags &= ~SC_SCRN_BLANKED;
2022     if (!changemode) {
2023 	if (!ISGRAPHSC(scp))
2024 	    sc_draw_cursor_image(scp);
2025 	--scrn_blanked;
2026 	splx(s);
2027 	return 0;
2028     }
2029     if (set_mode(scp) == 0) {
2030 #ifndef SC_NO_PALETTE_LOADING
2031 	load_palette(scp->sc->adp, scp->sc->palette);
2032 #endif
2033 	--scrn_blanked;
2034 	splx(s);
2035 	return 0;
2036     } else {
2037 	scp->mode = mode;
2038 	scp->status = status;
2039 	splx(s);
2040 	return 1;
2041     }
2042 }
2043 
2044 static void
2045 stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
2046 {
2047     (*saver)(sc, FALSE);
2048     run_scrn_saver = FALSE;
2049     /* the screen saver may have chosen not to stop after all... */
2050     if (sc->flags & SC_SCRN_BLANKED)
2051 	return;
2052 
2053     mark_all(sc->cur_scp);
2054     if (sc->delayed_next_scr)
2055 	sc_switch_scr(sc, sc->delayed_next_scr - 1);
2056     if (debugger == 0)
2057 	wakeup(&scrn_blanked);
2058 }
2059 
2060 static int
2061 wait_scrn_saver_stop(sc_softc_t *sc)
2062 {
2063     int error = 0;
2064 
2065     while (scrn_blanked > 0) {
2066 	run_scrn_saver = FALSE;
2067 	if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
2068 	    error = 0;
2069 	    break;
2070 	}
2071 	error = tsleep(&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
2072 	if ((error != 0) && (error != ERESTART))
2073 	    break;
2074     }
2075     run_scrn_saver = FALSE;
2076     return error;
2077 }
2078 #endif /* DEV_SPLASH */
2079 
2080 void
2081 sc_touch_scrn_saver(void)
2082 {
2083     scsplash_stick(FALSE);
2084     run_scrn_saver = FALSE;
2085 }
2086 
2087 int
2088 sc_switch_scr(sc_softc_t *sc, u_int next_scr)
2089 {
2090     scr_stat *cur_scp;
2091     struct tty *tp;
2092     struct proc *p;
2093     int s;
2094 
2095     DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
2096 
2097     if (sc->cur_scp == NULL)
2098 	return (0);
2099 
2100     /* prevent switch if previously requested */
2101     if (sc->flags & SC_SCRN_VTYLOCK) {
2102 	    sc_bell(sc->cur_scp, sc->cur_scp->bell_pitch,
2103 		sc->cur_scp->bell_duration);
2104 	    return EPERM;
2105     }
2106 
2107     /* delay switch if the screen is blanked or being updated */
2108     if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress
2109 	|| sc->blink_in_progress || sc->videoio_in_progress) {
2110 	sc->delayed_next_scr = next_scr + 1;
2111 	sc_touch_scrn_saver();
2112 	DPRINTF(5, ("switch delayed\n"));
2113 	return 0;
2114     }
2115 
2116     s = spltty();
2117     cur_scp = sc->cur_scp;
2118 
2119     /* we are in the middle of the vty switching process... */
2120     if (sc->switch_in_progress
2121 	&& (cur_scp->smode.mode == VT_PROCESS)
2122 	&& cur_scp->proc) {
2123 	p = pfind(cur_scp->pid);
2124 	if (cur_scp->proc != p) {
2125 	    if (p)
2126 		PROC_UNLOCK(p);
2127 	    /*
2128 	     * The controlling process has died!!.  Do some clean up.
2129 	     * NOTE:`cur_scp->proc' and `cur_scp->smode.mode'
2130 	     * are not reset here yet; they will be cleared later.
2131 	     */
2132 	    DPRINTF(5, ("cur_scp controlling process %d died, ",
2133 	       cur_scp->pid));
2134 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2135 		/*
2136 		 * Force the previous switch to finish, but return now
2137 		 * with error.
2138 		 */
2139 		DPRINTF(5, ("reset WAIT_REL, "));
2140 		finish_vt_rel(cur_scp, TRUE, &s);
2141 		splx(s);
2142 		DPRINTF(5, ("finishing previous switch\n"));
2143 		return EINVAL;
2144 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2145 		/* let's assume screen switch has been completed. */
2146 		DPRINTF(5, ("reset WAIT_ACQ, "));
2147 		finish_vt_acq(cur_scp);
2148 	    } else {
2149 		/*
2150 	 	 * We are in between screen release and acquisition, and
2151 		 * reached here via scgetc() or scrn_timer() which has
2152 		 * interrupted exchange_scr(). Don't do anything stupid.
2153 		 */
2154 		DPRINTF(5, ("waiting nothing, "));
2155 	    }
2156 	} else {
2157 	    if (p)
2158 		PROC_UNLOCK(p);
2159 	    /*
2160 	     * The controlling process is alive, but not responding...
2161 	     * It is either buggy or it may be just taking time.
2162 	     * The following code is a gross kludge to cope with this
2163 	     * problem for which there is no clean solution. XXX
2164 	     */
2165 	    if (cur_scp->status & SWITCH_WAIT_REL) {
2166 		switch (sc->switch_in_progress++) {
2167 		case 1:
2168 		    break;
2169 		case 2:
2170 		    DPRINTF(5, ("sending relsig again, "));
2171 		    signal_vt_rel(cur_scp);
2172 		    break;
2173 		case 3:
2174 		    break;
2175 		case 4:
2176 		default:
2177 		    /*
2178 		     * Act as if the controlling program returned
2179 		     * VT_FALSE.
2180 		     */
2181 		    DPRINTF(5, ("force reset WAIT_REL, "));
2182 		    finish_vt_rel(cur_scp, FALSE, &s);
2183 		    splx(s);
2184 		    DPRINTF(5, ("act as if VT_FALSE was seen\n"));
2185 		    return EINVAL;
2186 		}
2187 	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2188 		switch (sc->switch_in_progress++) {
2189 		case 1:
2190 		    break;
2191 		case 2:
2192 		    DPRINTF(5, ("sending acqsig again, "));
2193 		    signal_vt_acq(cur_scp);
2194 		    break;
2195 		case 3:
2196 		    break;
2197 		case 4:
2198 		default:
2199 		     /* clear the flag and finish the previous switch */
2200 		    DPRINTF(5, ("force reset WAIT_ACQ, "));
2201 		    finish_vt_acq(cur_scp);
2202 		    break;
2203 		}
2204 	    }
2205 	}
2206     }
2207 
2208     /*
2209      * Return error if an invalid argument is given, or vty switch
2210      * is still in progress.
2211      */
2212     if ((next_scr < sc->first_vty) || (next_scr >= sc->first_vty + sc->vtys)
2213 	|| sc->switch_in_progress) {
2214 	splx(s);
2215 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2216 	DPRINTF(5, ("error 1\n"));
2217 	return EINVAL;
2218     }
2219 
2220     /*
2221      * Don't allow switching away from the graphics mode vty
2222      * if the switch mode is VT_AUTO, unless the next vty is the same
2223      * as the current or the current vty has been closed (but showing).
2224      */
2225     tp = VIRTUAL_TTY(sc, cur_scp->index);
2226     if ((cur_scp->index != next_scr)
2227 	&& ISTTYOPEN(tp)
2228 	&& (cur_scp->smode.mode == VT_AUTO)
2229 	&& ISGRAPHSC(cur_scp)) {
2230 	splx(s);
2231 	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2232 	DPRINTF(5, ("error, graphics mode\n"));
2233 	return EINVAL;
2234     }
2235 
2236     /*
2237      * Is the wanted vty open? Don't allow switching to a closed vty.
2238      * If we are in DDB, don't switch to a vty in the VT_PROCESS mode.
2239      * Note that we always allow the user to switch to the kernel
2240      * console even if it is closed.
2241      */
2242     if ((sc_console == NULL) || (next_scr != sc_console->index)) {
2243 	tp = VIRTUAL_TTY(sc, next_scr);
2244 	if (!ISTTYOPEN(tp)) {
2245 	    splx(s);
2246 	    sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2247 	    DPRINTF(5, ("error 2, requested vty isn't open!\n"));
2248 	    return EINVAL;
2249 	}
2250 	if ((debugger > 0) && (SC_STAT(tp->t_dev)->smode.mode == VT_PROCESS)) {
2251 	    splx(s);
2252 	    DPRINTF(5, ("error 3, requested vty is in the VT_PROCESS mode\n"));
2253 	    return EINVAL;
2254 	}
2255     }
2256 
2257     /* this is the start of vty switching process... */
2258     ++sc->switch_in_progress;
2259     sc->delayed_next_scr = 0;
2260     sc->old_scp = cur_scp;
2261     sc->new_scp = sc_get_stat(SC_DEV(sc, next_scr));
2262     if (sc->new_scp == sc->old_scp) {
2263 	sc->switch_in_progress = 0;
2264 	/*
2265 	 * XXX wakeup() calls mtx_lock(&sched_lock) which will hang if
2266 	 * sched_lock is in an in-between state, e.g., when we stop at
2267 	 * a breakpoint at fork_exit.  It has always been wrong to call
2268 	 * wakeup() when the debugger is active.  In RELENG_4, wakeup()
2269 	 * is supposed to be locked by splhigh(), but the debugger may
2270 	 * be invoked at splhigh().
2271 	 */
2272 	if (debugger == 0)
2273 	    wakeup(&sc->new_scp->smode);
2274 	splx(s);
2275 	DPRINTF(5, ("switch done (new == old)\n"));
2276 	return 0;
2277     }
2278 
2279     /* has controlling process died? */
2280     vt_proc_alive(sc->old_scp);
2281     vt_proc_alive(sc->new_scp);
2282 
2283     /* wait for the controlling process to release the screen, if necessary */
2284     if (signal_vt_rel(sc->old_scp)) {
2285 	splx(s);
2286 	return 0;
2287     }
2288 
2289     /* go set up the new vty screen */
2290     splx(s);
2291     exchange_scr(sc);
2292     s = spltty();
2293 
2294     /* wake up processes waiting for this vty */
2295     if (debugger == 0)
2296 	wakeup(&sc->cur_scp->smode);
2297 
2298     /* wait for the controlling process to acknowledge, if necessary */
2299     if (signal_vt_acq(sc->cur_scp)) {
2300 	splx(s);
2301 	return 0;
2302     }
2303 
2304     sc->switch_in_progress = 0;
2305     if (sc->unit == sc_console_unit)
2306 	cnavailable(sc_consptr,  TRUE);
2307     splx(s);
2308     DPRINTF(5, ("switch done\n"));
2309 
2310     return 0;
2311 }
2312 
2313 static int
2314 do_switch_scr(sc_softc_t *sc, int s)
2315 {
2316     vt_proc_alive(sc->new_scp);
2317 
2318     splx(s);
2319     exchange_scr(sc);
2320     s = spltty();
2321     /* sc->cur_scp == sc->new_scp */
2322     wakeup(&sc->cur_scp->smode);
2323 
2324     /* wait for the controlling process to acknowledge, if necessary */
2325     if (!signal_vt_acq(sc->cur_scp)) {
2326 	sc->switch_in_progress = 0;
2327 	if (sc->unit == sc_console_unit)
2328 	    cnavailable(sc_consptr,  TRUE);
2329     }
2330 
2331     return s;
2332 }
2333 
2334 static int
2335 vt_proc_alive(scr_stat *scp)
2336 {
2337     struct proc *p;
2338 
2339     if (scp->proc) {
2340 	if ((p = pfind(scp->pid)) != NULL)
2341 	    PROC_UNLOCK(p);
2342 	if (scp->proc == p)
2343 	    return TRUE;
2344 	scp->proc = NULL;
2345 	scp->smode.mode = VT_AUTO;
2346 	DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
2347     }
2348     return FALSE;
2349 }
2350 
2351 static int
2352 signal_vt_rel(scr_stat *scp)
2353 {
2354     if (scp->smode.mode != VT_PROCESS)
2355 	return FALSE;
2356     scp->status |= SWITCH_WAIT_REL;
2357     PROC_LOCK(scp->proc);
2358     psignal(scp->proc, scp->smode.relsig);
2359     PROC_UNLOCK(scp->proc);
2360     DPRINTF(5, ("sending relsig to %d\n", scp->pid));
2361     return TRUE;
2362 }
2363 
2364 static int
2365 signal_vt_acq(scr_stat *scp)
2366 {
2367     if (scp->smode.mode != VT_PROCESS)
2368 	return FALSE;
2369     if (scp->sc->unit == sc_console_unit)
2370 	cnavailable(sc_consptr,  FALSE);
2371     scp->status |= SWITCH_WAIT_ACQ;
2372     PROC_LOCK(scp->proc);
2373     psignal(scp->proc, scp->smode.acqsig);
2374     PROC_UNLOCK(scp->proc);
2375     DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
2376     return TRUE;
2377 }
2378 
2379 static int
2380 finish_vt_rel(scr_stat *scp, int release, int *s)
2381 {
2382     if (scp == scp->sc->old_scp && scp->status & SWITCH_WAIT_REL) {
2383 	scp->status &= ~SWITCH_WAIT_REL;
2384 	if (release)
2385 	    *s = do_switch_scr(scp->sc, *s);
2386 	else
2387 	    scp->sc->switch_in_progress = 0;
2388 	return 0;
2389     }
2390     return EINVAL;
2391 }
2392 
2393 static int
2394 finish_vt_acq(scr_stat *scp)
2395 {
2396     if (scp == scp->sc->new_scp && scp->status & SWITCH_WAIT_ACQ) {
2397 	scp->status &= ~SWITCH_WAIT_ACQ;
2398 	scp->sc->switch_in_progress = 0;
2399 	return 0;
2400     }
2401     return EINVAL;
2402 }
2403 
2404 static void
2405 exchange_scr(sc_softc_t *sc)
2406 {
2407     scr_stat *scp;
2408 
2409     /* save the current state of video and keyboard */
2410     sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
2411     if (!ISGRAPHSC(sc->old_scp))
2412 	sc_remove_cursor_image(sc->old_scp);
2413     if (sc->old_scp->kbd_mode == K_XLATE)
2414 	save_kbd_state(sc->old_scp);
2415 
2416     /* set up the video for the new screen */
2417     scp = sc->cur_scp = sc->new_scp;
2418 #ifdef PC98
2419     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp) || ISUNKNOWNSC(sc->new_scp))
2420 #else
2421     if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
2422 #endif
2423 	set_mode(scp);
2424 #ifndef __sparc64__
2425     else
2426 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2427 		    (void *)sc->adp->va_window, FALSE);
2428 #endif
2429     scp->status |= MOUSE_HIDDEN;
2430     sc_move_cursor(scp, scp->xpos, scp->ypos);
2431     if (!ISGRAPHSC(scp))
2432 	sc_set_cursor_image(scp);
2433 #ifndef SC_NO_PALETTE_LOADING
2434     if (ISGRAPHSC(sc->old_scp))
2435 	load_palette(sc->adp, sc->palette);
2436 #endif
2437     sc_set_border(scp, scp->border);
2438 
2439     /* set up the keyboard for the new screen */
2440     if (sc->old_scp->kbd_mode != scp->kbd_mode)
2441 	kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
2442     update_kbd_state(scp, scp->status, LOCK_MASK);
2443 
2444     mark_all(scp);
2445 }
2446 
2447 void
2448 sc_puts(scr_stat *scp, u_char *buf, int len)
2449 {
2450 #ifdef DEV_SPLASH
2451     /* make screensaver happy */
2452     if (!sticky_splash && scp == scp->sc->cur_scp && !sc_saver_keyb_only)
2453 	run_scrn_saver = FALSE;
2454 #endif
2455 
2456     if (scp->tsw)
2457 	(*scp->tsw->te_puts)(scp, buf, len);
2458 
2459     if (scp->sc->delayed_next_scr)
2460 	sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
2461 }
2462 
2463 void
2464 sc_draw_cursor_image(scr_stat *scp)
2465 {
2466     /* assert(scp == scp->sc->cur_scp); */
2467     ++scp->sc->videoio_in_progress;
2468     (*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
2469 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, TRUE,
2470 			      sc_inside_cutmark(scp, scp->cursor_pos));
2471     scp->cursor_oldpos = scp->cursor_pos;
2472     --scp->sc->videoio_in_progress;
2473 }
2474 
2475 void
2476 sc_remove_cursor_image(scr_stat *scp)
2477 {
2478     /* assert(scp == scp->sc->cur_scp); */
2479     ++scp->sc->videoio_in_progress;
2480     (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
2481 			      scp->curs_attr.flags & CONS_BLINK_CURSOR, FALSE,
2482 			      sc_inside_cutmark(scp, scp->cursor_oldpos));
2483     --scp->sc->videoio_in_progress;
2484 }
2485 
2486 static void
2487 update_cursor_image(scr_stat *scp)
2488 {
2489     /* assert(scp == scp->sc->cur_scp); */
2490     sc_remove_cursor_image(scp);
2491     sc_set_cursor_image(scp);
2492     sc_draw_cursor_image(scp);
2493 }
2494 
2495 void
2496 sc_set_cursor_image(scr_stat *scp)
2497 {
2498     scp->curs_attr.flags = scp->curr_curs_attr.flags;
2499     if (scp->curs_attr.flags & CONS_HIDDEN_CURSOR) {
2500 	/* hidden cursor is internally represented as zero-height underline */
2501 	scp->curs_attr.flags = CONS_CHAR_CURSOR;
2502 	scp->curs_attr.base = scp->curs_attr.height = 0;
2503     } else if (scp->curs_attr.flags & CONS_CHAR_CURSOR) {
2504 	scp->curs_attr.base = imin(scp->curr_curs_attr.base,
2505 				  scp->font_size - 1);
2506 	scp->curs_attr.height = imin(scp->curr_curs_attr.height,
2507 				    scp->font_size - scp->curs_attr.base);
2508     } else {	/* block cursor */
2509 	scp->curs_attr.base = 0;
2510 	scp->curs_attr.height = scp->font_size;
2511     }
2512 
2513     /* assert(scp == scp->sc->cur_scp); */
2514     ++scp->sc->videoio_in_progress;
2515     (*scp->rndr->set_cursor)(scp, scp->curs_attr.base, scp->curs_attr.height,
2516 			     scp->curs_attr.flags & CONS_BLINK_CURSOR);
2517     --scp->sc->videoio_in_progress;
2518 }
2519 
2520 static void
2521 change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2522 {
2523     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp))
2524 	sc_remove_cursor_image(scp);
2525 
2526     if (base >= 0)
2527 	scp->curr_curs_attr.base = base;
2528     if (height >= 0)
2529 	scp->curr_curs_attr.height = height;
2530     if (flags & CONS_RESET_CURSOR)
2531 	scp->curr_curs_attr = scp->dflt_curs_attr;
2532     else
2533 	scp->curr_curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2534 
2535     if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp)) {
2536 	sc_set_cursor_image(scp);
2537 	sc_draw_cursor_image(scp);
2538     }
2539 }
2540 
2541 void
2542 sc_change_cursor_shape(scr_stat *scp, int flags, int base, int height)
2543 {
2544     sc_softc_t *sc;
2545     struct cdev *dev;
2546     int s;
2547     int i;
2548 
2549     s = spltty();
2550     if ((flags != -1) && (flags & CONS_LOCAL_CURSOR)) {
2551 	/* local (per vty) change */
2552 	change_cursor_shape(scp, flags, base, height);
2553 	splx(s);
2554 	return;
2555     }
2556 
2557     /* global change */
2558     sc = scp->sc;
2559     if (base >= 0)
2560 	sc->curs_attr.base = base;
2561     if (height >= 0)
2562 	sc->curs_attr.height = height;
2563     if (flags != -1) {
2564 	if (flags & CONS_RESET_CURSOR)
2565 	    sc->curs_attr = sc->dflt_curs_attr;
2566 	else
2567 	    sc->curs_attr.flags = flags & CONS_CURSOR_ATTRS;
2568     }
2569 
2570     for (i = sc->first_vty; i < sc->first_vty + sc->vtys; ++i) {
2571 	if ((dev = SC_DEV(sc, i)) == NULL)
2572 	    continue;
2573 	if ((scp = sc_get_stat(dev)) == NULL)
2574 	    continue;
2575 	scp->dflt_curs_attr = sc->curs_attr;
2576 	change_cursor_shape(scp, CONS_RESET_CURSOR, -1, -1);
2577     }
2578     splx(s);
2579 }
2580 
2581 static void
2582 scinit(int unit, int flags)
2583 {
2584     struct tty *tp;
2585 
2586     /*
2587      * When syscons is being initialized as the kernel console, malloc()
2588      * is not yet functional, because various kernel structures has not been
2589      * fully initialized yet.  Therefore, we need to declare the following
2590      * static buffers for the console.  This is less than ideal,
2591      * but is necessry evil for the time being.  XXX
2592      */
2593 #ifdef PC98
2594     static u_short sc_buffer[ROW*COL*2];/* XXX */
2595 #else
2596     static u_short sc_buffer[ROW*COL];	/* XXX */
2597 #endif
2598 #ifndef SC_NO_FONT_LOADING
2599     static u_char font_8[256*8];
2600     static u_char font_14[256*14];
2601     static u_char font_16[256*16];
2602 #endif
2603 
2604     sc_softc_t *sc;
2605     scr_stat *scp;
2606     video_adapter_t *adp;
2607     int col;
2608     int row;
2609     int i;
2610 
2611     /* one time initialization */
2612     if (init_done == COLD)
2613 	sc_get_bios_values(&bios_value);
2614     init_done = WARM;
2615 
2616     /*
2617      * Allocate resources.  Even if we are being called for the second
2618      * time, we must allocate them again, because they might have
2619      * disappeared...
2620      */
2621     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2622     adp = NULL;
2623     if (sc->adapter >= 0) {
2624 	vid_release(sc->adp, (void *)&sc->adapter);
2625 	adp = sc->adp;
2626 	sc->adp = NULL;
2627     }
2628     if (sc->keyboard >= 0) {
2629 	DPRINTF(5, ("sc%d: releasing kbd%d\n", unit, sc->keyboard));
2630 	i = kbd_release(sc->kbd, (void *)&sc->keyboard);
2631 	DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
2632 	if (sc->kbd != NULL) {
2633 	    DPRINTF(5, ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
2634 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2635 	}
2636 	sc->kbd = NULL;
2637     }
2638     sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
2639     sc->adp = vid_get_adapter(sc->adapter);
2640     /* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
2641     sc->keyboard = kbd_allocate("*", unit, (void *)&sc->keyboard,
2642 				sckbdevent, sc);
2643     DPRINTF(1, ("sc%d: keyboard %d\n", unit, sc->keyboard));
2644     sc->kbd = kbd_get_keyboard(sc->keyboard);
2645     if (sc->kbd != NULL) {
2646 	DPRINTF(1, ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n",
2647 		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2648     }
2649 
2650     if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
2651 
2652 	sc->initial_mode = sc->adp->va_initial_mode;
2653 
2654 #ifndef SC_NO_FONT_LOADING
2655 	if (flags & SC_KERNEL_CONSOLE) {
2656 	    sc->font_8 = font_8;
2657 	    sc->font_14 = font_14;
2658 	    sc->font_16 = font_16;
2659 	} else if (sc->font_8 == NULL) {
2660 	    /* assert(sc_malloc) */
2661 	    sc->font_8 = malloc(sizeof(font_8), M_DEVBUF, M_WAITOK);
2662 	    sc->font_14 = malloc(sizeof(font_14), M_DEVBUF, M_WAITOK);
2663 	    sc->font_16 = malloc(sizeof(font_16), M_DEVBUF, M_WAITOK);
2664 	}
2665 #endif
2666 
2667 	/* extract the hardware cursor location and hide the cursor for now */
2668 	(*vidsw[sc->adapter]->read_hw_cursor)(sc->adp, &col, &row);
2669 	(*vidsw[sc->adapter]->set_hw_cursor)(sc->adp, -1, -1);
2670 
2671 	/* set up the first console */
2672 	sc->first_vty = unit*MAXCONS;
2673 	sc->vtys = MAXCONS;		/* XXX: should be configurable */
2674 	if (flags & SC_KERNEL_CONSOLE) {
2675 	    /*
2676 	     * Set up devs structure but don't use it yet, calling make_dev()
2677 	     * might panic kernel.  Wait for sc_attach_unit() to actually
2678 	     * create the devices.
2679 	     */
2680 	    sc->dev = main_devs;
2681 	    scp = &main_console;
2682 	    init_scp(sc, sc->first_vty, scp);
2683 	    sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize, scp->ysize,
2684 			(void *)sc_buffer, FALSE);
2685 	    if (sc_init_emulator(scp, SC_DFLT_TERM))
2686 		sc_init_emulator(scp, "*");
2687 	    (*scp->tsw->te_default_attr)(scp,
2688 					 kernel_default.std_color,
2689 					 kernel_default.rev_color);
2690 	} else {
2691 	    /* assert(sc_malloc) */
2692 	    sc->dev = malloc(sizeof(struct cdev *)*sc->vtys, M_DEVBUF, M_WAITOK|M_ZERO);
2693 	    sc->dev[0] = make_dev(&sc_cdevsw, unit * MAXCONS,
2694 	        UID_ROOT, GID_WHEEL, 0600, "ttyv%r", unit * MAXCONS);
2695 	    tp = sc->dev[0]->si_tty = ttyalloc();
2696 	    tp->t_oproc = scstart;
2697 	    tp->t_param = scparam;
2698 	    tp->t_stop = nottystop;
2699 	    tp->t_dev = sc->dev[0];
2700 	    scp = alloc_scp(sc, sc->first_vty);
2701 	    SC_STAT(sc->dev[0]) = scp;
2702 	}
2703 	sc->cur_scp = scp;
2704 
2705 #ifndef __sparc64__
2706 	/* copy screen to temporary buffer */
2707 	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2708 		    (void *)scp->sc->adp->va_window, FALSE);
2709 	if (ISTEXTSC(scp))
2710 	    sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0, scp->xsize*scp->ysize);
2711 #endif
2712 
2713 	/* move cursors to the initial positions */
2714 	if (col >= scp->xsize)
2715 	    col = 0;
2716 	if (row >= scp->ysize)
2717 	    row = scp->ysize - 1;
2718 	scp->xpos = col;
2719 	scp->ypos = row;
2720 	scp->cursor_pos = scp->cursor_oldpos = row*scp->xsize + col;
2721 
2722 	if (bios_value.cursor_end < scp->font_size)
2723 	    sc->dflt_curs_attr.base = scp->font_size -
2724 					  bios_value.cursor_end - 1;
2725 	else
2726 	    sc->dflt_curs_attr.base = 0;
2727 	i = bios_value.cursor_end - bios_value.cursor_start + 1;
2728 	sc->dflt_curs_attr.height = imin(i, scp->font_size);
2729 	sc->dflt_curs_attr.flags = 0;
2730 	sc->curs_attr = sc->dflt_curs_attr;
2731 	scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
2732 
2733 #ifndef SC_NO_SYSMOUSE
2734 	sc_mouse_move(scp, scp->xpixel/2, scp->ypixel/2);
2735 #endif
2736 	if (!ISGRAPHSC(scp)) {
2737     	    sc_set_cursor_image(scp);
2738     	    sc_draw_cursor_image(scp);
2739 	}
2740 
2741 	/* save font and palette */
2742 #ifndef SC_NO_FONT_LOADING
2743 	sc->fonts_loaded = 0;
2744 	if (ISFONTAVAIL(sc->adp->va_flags)) {
2745 #ifdef SC_DFLT_FONT
2746 	    bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
2747 	    bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
2748 	    bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
2749 	    sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
2750 	    if (scp->font_size < 14) {
2751 		sc_load_font(scp, 0, 8, sc->font_8, 0, 256);
2752 	    } else if (scp->font_size >= 16) {
2753 		sc_load_font(scp, 0, 16, sc->font_16, 0, 256);
2754 	    } else {
2755 		sc_load_font(scp, 0, 14, sc->font_14, 0, 256);
2756 	    }
2757 #else /* !SC_DFLT_FONT */
2758 	    if (scp->font_size < 14) {
2759 		sc_save_font(scp, 0, 8, sc->font_8, 0, 256);
2760 		sc->fonts_loaded = FONT_8;
2761 	    } else if (scp->font_size >= 16) {
2762 		sc_save_font(scp, 0, 16, sc->font_16, 0, 256);
2763 		sc->fonts_loaded = FONT_16;
2764 	    } else {
2765 		sc_save_font(scp, 0, 14, sc->font_14, 0, 256);
2766 		sc->fonts_loaded = FONT_14;
2767 	    }
2768 #endif /* SC_DFLT_FONT */
2769 	    /* FONT KLUDGE: always use the font page #0. XXX */
2770 	    sc_show_font(scp, 0);
2771 	}
2772 #endif /* !SC_NO_FONT_LOADING */
2773 
2774 #ifndef SC_NO_PALETTE_LOADING
2775 	save_palette(sc->adp, sc->palette);
2776 #endif
2777 
2778 #ifdef DEV_SPLASH
2779 	if (!(sc->flags & SC_SPLASH_SCRN)) {
2780 	    /* we are ready to put up the splash image! */
2781 	    splash_init(sc->adp, scsplash_callback, sc);
2782 	    sc->flags |= SC_SPLASH_SCRN;
2783 	}
2784 #endif
2785     }
2786 
2787     /* the rest is not necessary, if we have done it once */
2788     if (sc->flags & SC_INIT_DONE)
2789 	return;
2790 
2791     /* initialize mapscrn arrays to a one to one map */
2792     for (i = 0; i < sizeof(sc->scr_map); i++)
2793 	sc->scr_map[i] = sc->scr_rmap[i] = i;
2794 #ifdef PC98
2795     sc->scr_map[0x5c] = (u_char)0xfc;	/* for backslash */
2796 #endif
2797 
2798     sc->flags |= SC_INIT_DONE;
2799 }
2800 
2801 static void
2802 scterm(int unit, int flags)
2803 {
2804     sc_softc_t *sc;
2805     scr_stat *scp;
2806 
2807     sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2808     if (sc == NULL)
2809 	return;			/* shouldn't happen */
2810 
2811 #ifdef DEV_SPLASH
2812     /* this console is no longer available for the splash screen */
2813     if (sc->flags & SC_SPLASH_SCRN) {
2814 	splash_term(sc->adp);
2815 	sc->flags &= ~SC_SPLASH_SCRN;
2816     }
2817 #endif
2818 
2819 #if 0 /* XXX */
2820     /* move the hardware cursor to the upper-left corner */
2821     (*vidsw[sc->adapter]->set_hw_cursor)(sc->adp, 0, 0);
2822 #endif
2823 
2824     /* release the keyboard and the video card */
2825     if (sc->keyboard >= 0)
2826 	kbd_release(sc->kbd, &sc->keyboard);
2827     if (sc->adapter >= 0)
2828 	vid_release(sc->adp, &sc->adapter);
2829 
2830     /* stop the terminal emulator, if any */
2831     scp = sc_get_stat(sc->dev[0]);
2832     if (scp->tsw)
2833 	(*scp->tsw->te_term)(scp, &scp->ts);
2834     if (scp->ts != NULL)
2835 	free(scp->ts, M_DEVBUF);
2836 
2837     /* clear the structure */
2838     if (!(flags & SC_KERNEL_CONSOLE)) {
2839 	/* XXX: We need delete_dev() for this */
2840 	free(sc->dev, M_DEVBUF);
2841 #if 0
2842 	/* XXX: We need a ttyunregister for this */
2843 	free(sc->tty, M_DEVBUF);
2844 #endif
2845 #ifndef SC_NO_FONT_LOADING
2846 	free(sc->font_8, M_DEVBUF);
2847 	free(sc->font_14, M_DEVBUF);
2848 	free(sc->font_16, M_DEVBUF);
2849 #endif
2850 	/* XXX vtb, history */
2851     }
2852     bzero(sc, sizeof(*sc));
2853     sc->keyboard = -1;
2854     sc->adapter = -1;
2855 }
2856 
2857 static void
2858 scshutdown(void *arg, int howto)
2859 {
2860     /* assert(sc_console != NULL) */
2861 
2862     sc_touch_scrn_saver();
2863     if (!cold && sc_console
2864 	&& sc_console->sc->cur_scp->smode.mode == VT_AUTO
2865 	&& sc_console->smode.mode == VT_AUTO)
2866 	sc_switch_scr(sc_console->sc, sc_console->index);
2867     shutdown_in_progress = TRUE;
2868 }
2869 
2870 int
2871 sc_clean_up(scr_stat *scp)
2872 {
2873 #ifdef DEV_SPLASH
2874     int error;
2875 #endif
2876 
2877     if (scp->sc->flags & SC_SCRN_BLANKED) {
2878 	sc_touch_scrn_saver();
2879 #ifdef DEV_SPLASH
2880 	if ((error = wait_scrn_saver_stop(scp->sc)))
2881 	    return error;
2882 #endif
2883     }
2884     scp->status |= MOUSE_HIDDEN;
2885     sc_remove_mouse_image(scp);
2886     sc_remove_cutmarking(scp);
2887     return 0;
2888 }
2889 
2890 void
2891 sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
2892 {
2893     sc_vtb_t new;
2894     sc_vtb_t old;
2895 
2896     old = scp->vtb;
2897     sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
2898     if (!discard && (old.vtb_flags & VTB_VALID)) {
2899 	/* retain the current cursor position and buffer contants */
2900 	scp->cursor_oldpos = scp->cursor_pos;
2901 	/*
2902 	 * This works only if the old buffer has the same size as or larger
2903 	 * than the new one. XXX
2904 	 */
2905 	sc_vtb_copy(&old, 0, &new, 0, scp->xsize*scp->ysize);
2906 	scp->vtb = new;
2907     } else {
2908 	scp->vtb = new;
2909 	sc_vtb_destroy(&old);
2910     }
2911 
2912 #ifndef SC_NO_SYSMOUSE
2913     /* move the mouse cursor at the center of the screen */
2914     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
2915 #endif
2916 }
2917 
2918 static scr_stat
2919 *alloc_scp(sc_softc_t *sc, int vty)
2920 {
2921     scr_stat *scp;
2922 
2923     /* assert(sc_malloc) */
2924 
2925     scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
2926     init_scp(sc, vty, scp);
2927 
2928     sc_alloc_scr_buffer(scp, TRUE, TRUE);
2929     if (sc_init_emulator(scp, SC_DFLT_TERM))
2930 	sc_init_emulator(scp, "*");
2931 
2932 #ifndef SC_NO_CUTPASTE
2933     sc_alloc_cut_buffer(scp, TRUE);
2934 #endif
2935 
2936 #ifndef SC_NO_HISTORY
2937     sc_alloc_history_buffer(scp, 0, 0, TRUE);
2938 #endif
2939 
2940     return scp;
2941 }
2942 
2943 static void
2944 init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
2945 {
2946     video_info_t info;
2947 
2948     bzero(scp, sizeof(*scp));
2949 
2950     scp->index = vty;
2951     scp->sc = sc;
2952     scp->status = 0;
2953     scp->mode = sc->initial_mode;
2954     (*vidsw[sc->adapter]->get_info)(sc->adp, scp->mode, &info);
2955     if (info.vi_flags & V_INFO_GRAPHICS) {
2956 	scp->status |= GRAPHICS_MODE;
2957 	scp->xpixel = info.vi_width;
2958 	scp->ypixel = info.vi_height;
2959 	scp->xsize = info.vi_width/info.vi_cwidth;
2960 	scp->ysize = info.vi_height/info.vi_cheight;
2961 	scp->font_size = 0;
2962 	scp->font = NULL;
2963     } else {
2964 	scp->xsize = info.vi_width;
2965 	scp->ysize = info.vi_height;
2966 	scp->xpixel = scp->xsize*info.vi_cwidth;
2967 	scp->ypixel = scp->ysize*info.vi_cheight;
2968 	scp->font_size = info.vi_cheight;
2969 	scp->font_width = info.vi_cwidth;
2970 	if (info.vi_cheight < 14) {
2971 #ifndef SC_NO_FONT_LOADING
2972 	    scp->font = sc->font_8;
2973 #else
2974 	    scp->font = NULL;
2975 #endif
2976 	} else if (info.vi_cheight >= 16) {
2977 #ifndef SC_NO_FONT_LOADING
2978 	    scp->font = sc->font_16;
2979 #else
2980 	    scp->font = NULL;
2981 #endif
2982 	} else {
2983 #ifndef SC_NO_FONT_LOADING
2984 	    scp->font = sc->font_14;
2985 #else
2986 	    scp->font = NULL;
2987 #endif
2988 	}
2989     }
2990     sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
2991 #ifndef __sparc64__
2992     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
2993 #endif
2994     scp->xoff = scp->yoff = 0;
2995     scp->xpos = scp->ypos = 0;
2996     scp->start = scp->xsize * scp->ysize - 1;
2997     scp->end = 0;
2998     scp->tsw = NULL;
2999     scp->ts = NULL;
3000     scp->rndr = NULL;
3001     scp->border = BG_BLACK;
3002     scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
3003     scp->mouse_cut_start = scp->xsize*scp->ysize;
3004     scp->mouse_cut_end = -1;
3005     scp->mouse_signal = 0;
3006     scp->mouse_pid = 0;
3007     scp->mouse_proc = NULL;
3008     scp->kbd_mode = K_XLATE;
3009     scp->bell_pitch = bios_value.bell_pitch;
3010     scp->bell_duration = BELL_DURATION;
3011     scp->status |= (bios_value.shift_state & NLKED);
3012     scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
3013     scp->pid = 0;
3014     scp->proc = NULL;
3015     scp->smode.mode = VT_AUTO;
3016     scp->history = NULL;
3017     scp->history_pos = 0;
3018     scp->history_size = 0;
3019 }
3020 
3021 int
3022 sc_init_emulator(scr_stat *scp, char *name)
3023 {
3024     sc_term_sw_t *sw;
3025     sc_rndr_sw_t *rndr;
3026     void *p;
3027     int error;
3028 
3029     if (name == NULL)	/* if no name is given, use the current emulator */
3030 	sw = scp->tsw;
3031     else		/* ...otherwise find the named emulator */
3032 	sw = sc_term_match(name);
3033     if (sw == NULL)
3034 	return EINVAL;
3035 
3036     rndr = NULL;
3037     if (strcmp(sw->te_renderer, "*") != 0) {
3038 	rndr = sc_render_match(scp, sw->te_renderer,
3039 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3040     }
3041     if (rndr == NULL) {
3042 	rndr = sc_render_match(scp, scp->sc->adp->va_name,
3043 			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3044 	if (rndr == NULL)
3045 	    return ENODEV;
3046     }
3047 
3048     if (sw == scp->tsw) {
3049 	error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
3050 	scp->rndr = rndr;
3051 	sc_clear_screen(scp);
3052 	/* assert(error == 0); */
3053 	return error;
3054     }
3055 
3056     if (sc_malloc && (sw->te_size > 0))
3057 	p = malloc(sw->te_size, M_DEVBUF, M_NOWAIT);
3058     else
3059 	p = NULL;
3060     error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
3061     if (error)
3062 	return error;
3063 
3064     if (scp->tsw)
3065 	(*scp->tsw->te_term)(scp, &scp->ts);
3066     if (scp->ts != NULL)
3067 	free(scp->ts, M_DEVBUF);
3068     scp->tsw = sw;
3069     scp->ts = p;
3070     scp->rndr = rndr;
3071 
3072     /* XXX */
3073     (*sw->te_default_attr)(scp, user_default.std_color, user_default.rev_color);
3074     sc_clear_screen(scp);
3075 
3076     return 0;
3077 }
3078 
3079 /*
3080  * scgetc(flags) - get character from keyboard.
3081  * If flags & SCGETC_CN, then avoid harmful side effects.
3082  * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
3083  * return NOKEY if there is nothing there.
3084  */
3085 static u_int
3086 scgetc(sc_softc_t *sc, u_int flags)
3087 {
3088     scr_stat *scp;
3089 #ifndef SC_NO_HISTORY
3090     struct tty *tp;
3091 #endif
3092     u_int c;
3093     int this_scr;
3094     int f;
3095     int i;
3096 
3097     if (sc->kbd == NULL)
3098 	return NOKEY;
3099 
3100 next_code:
3101 #if 1
3102     /* I don't like this, but... XXX */
3103     if (flags & SCGETC_CN)
3104 	sccnupdate(sc->cur_scp);
3105 #endif
3106     scp = sc->cur_scp;
3107     /* first see if there is something in the keyboard port */
3108     for (;;) {
3109 	c = kbd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
3110 	if (c == ERRKEY) {
3111 	    if (!(flags & SCGETC_CN))
3112 		sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3113 	} else if (c == NOKEY)
3114 	    return c;
3115 	else
3116 	    break;
3117     }
3118 
3119     /* make screensaver happy */
3120     if (!(c & RELKEY))
3121 	sc_touch_scrn_saver();
3122 
3123     if (!(flags & SCGETC_CN))
3124 	random_harvest(&c, sizeof(c), 1, 0, RANDOM_KEYBOARD);
3125 
3126     if (scp->kbd_mode != K_XLATE)
3127 	return KEYCHAR(c);
3128 
3129     /* if scroll-lock pressed allow history browsing */
3130     if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
3131 
3132 	scp->status &= ~CURSOR_ENABLED;
3133 	sc_remove_cursor_image(scp);
3134 
3135 #ifndef SC_NO_HISTORY
3136 	if (!(scp->status & BUFFER_SAVED)) {
3137 	    scp->status |= BUFFER_SAVED;
3138 	    sc_hist_save(scp);
3139 	}
3140 	switch (c) {
3141 	/* FIXME: key codes */
3142 	case SPCLKEY | FKEY | F(49):  /* home key */
3143 	    sc_remove_cutmarking(scp);
3144 	    sc_hist_home(scp);
3145 	    goto next_code;
3146 
3147 	case SPCLKEY | FKEY | F(57):  /* end key */
3148 	    sc_remove_cutmarking(scp);
3149 	    sc_hist_end(scp);
3150 	    goto next_code;
3151 
3152 	case SPCLKEY | FKEY | F(50):  /* up arrow key */
3153 	    sc_remove_cutmarking(scp);
3154 	    if (sc_hist_up_line(scp))
3155 		if (!(flags & SCGETC_CN))
3156 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3157 	    goto next_code;
3158 
3159 	case SPCLKEY | FKEY | F(58):  /* down arrow key */
3160 	    sc_remove_cutmarking(scp);
3161 	    if (sc_hist_down_line(scp))
3162 		if (!(flags & SCGETC_CN))
3163 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3164 	    goto next_code;
3165 
3166 	case SPCLKEY | FKEY | F(51):  /* page up key */
3167 	    sc_remove_cutmarking(scp);
3168 	    for (i=0; i<scp->ysize; i++)
3169 	    if (sc_hist_up_line(scp)) {
3170 		if (!(flags & SCGETC_CN))
3171 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3172 		break;
3173 	    }
3174 	    goto next_code;
3175 
3176 	case SPCLKEY | FKEY | F(59):  /* page down key */
3177 	    sc_remove_cutmarking(scp);
3178 	    for (i=0; i<scp->ysize; i++)
3179 	    if (sc_hist_down_line(scp)) {
3180 		if (!(flags & SCGETC_CN))
3181 		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3182 		break;
3183 	    }
3184 	    goto next_code;
3185 	}
3186 #endif /* SC_NO_HISTORY */
3187     }
3188 
3189     /*
3190      * Process and consume special keys here.  Return a plain char code
3191      * or a char code with the META flag or a function key code.
3192      */
3193     if (c & RELKEY) {
3194 	/* key released */
3195 	/* goto next_code */
3196     } else {
3197 	/* key pressed */
3198 	if (c & SPCLKEY) {
3199 	    c &= ~SPCLKEY;
3200 	    switch (KEYCHAR(c)) {
3201 	    /* LOCKING KEYS */
3202 	    case NLK: case CLK: case ALK:
3203 		break;
3204 	    case SLK:
3205 		kbd_ioctl(sc->kbd, KDGKBSTATE, (caddr_t)&f);
3206 		if (f & SLKED) {
3207 		    scp->status |= SLKED;
3208 		} else {
3209 		    if (scp->status & SLKED) {
3210 			scp->status &= ~SLKED;
3211 #ifndef SC_NO_HISTORY
3212 			if (scp->status & BUFFER_SAVED) {
3213 			    if (!sc_hist_restore(scp))
3214 				sc_remove_cutmarking(scp);
3215 			    scp->status &= ~BUFFER_SAVED;
3216 			    scp->status |= CURSOR_ENABLED;
3217 			    sc_draw_cursor_image(scp);
3218 			}
3219 			tp = VIRTUAL_TTY(sc, scp->index);
3220 			if (ISTTYOPEN(tp))
3221 			    scstart(tp);
3222 #endif
3223 		    }
3224 		}
3225 		break;
3226 
3227 	    case PASTE:
3228 #ifndef SC_NO_CUTPASTE
3229 		sc_mouse_paste(scp);
3230 #endif
3231 		break;
3232 
3233 	    /* NON-LOCKING KEYS */
3234 	    case NOP:
3235 	    case LSH:  case RSH:  case LCTR: case RCTR:
3236 	    case LALT: case RALT: case ASH:  case META:
3237 		break;
3238 
3239 	    case BTAB:
3240 		if (!(sc->flags & SC_SCRN_BLANKED))
3241 		    return c;
3242 		break;
3243 
3244 	    case SPSC:
3245 #ifdef DEV_SPLASH
3246 		/* force activatation/deactivation of the screen saver */
3247 		if (!(sc->flags & SC_SCRN_BLANKED)) {
3248 		    run_scrn_saver = TRUE;
3249 		    sc->scrn_time_stamp -= scrn_blank_time;
3250 		}
3251 		if (cold) {
3252 		    /*
3253 		     * While devices are being probed, the screen saver need
3254 		     * to be invoked explictly. XXX
3255 		     */
3256 		    if (sc->flags & SC_SCRN_BLANKED) {
3257 			scsplash_stick(FALSE);
3258 			stop_scrn_saver(sc, current_saver);
3259 		    } else {
3260 			if (!ISGRAPHSC(scp)) {
3261 			    scsplash_stick(TRUE);
3262 			    (*current_saver)(sc, TRUE);
3263 			}
3264 		    }
3265 		}
3266 #endif /* DEV_SPLASH */
3267 		break;
3268 
3269 	    case RBT:
3270 #ifndef SC_DISABLE_REBOOT
3271 		shutdown_nice(0);
3272 #endif
3273 		break;
3274 
3275 	    case HALT:
3276 #ifndef SC_DISABLE_REBOOT
3277 		shutdown_nice(RB_HALT);
3278 #endif
3279 		break;
3280 
3281 	    case PDWN:
3282 #ifndef SC_DISABLE_REBOOT
3283 		shutdown_nice(RB_HALT|RB_POWEROFF);
3284 #endif
3285 		break;
3286 
3287 	    case SUSP:
3288 		power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
3289 		break;
3290 	    case STBY:
3291 		power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
3292 		break;
3293 
3294 	    case DBG:
3295 #ifndef SC_DISABLE_KDBKEY
3296 		kdb_enter("manual escape to debugger");
3297 #endif
3298 		break;
3299 
3300 	    case PNC:
3301 		if (enable_panic_key)
3302 			panic("Forced by the panic key");
3303 		break;
3304 
3305 	    case NEXT:
3306 		this_scr = scp->index;
3307 		for (i = (this_scr - sc->first_vty + 1)%sc->vtys;
3308 			sc->first_vty + i != this_scr;
3309 			i = (i + 1)%sc->vtys) {
3310 		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
3311 		    if (ISTTYOPEN(tp)) {
3312 			sc_switch_scr(scp->sc, sc->first_vty + i);
3313 			break;
3314 		    }
3315 		}
3316 		break;
3317 
3318 	    case PREV:
3319 		this_scr = scp->index;
3320 		for (i = (this_scr - sc->first_vty + sc->vtys - 1)%sc->vtys;
3321 			sc->first_vty + i != this_scr;
3322 			i = (i + sc->vtys - 1)%sc->vtys) {
3323 		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
3324 		    if (ISTTYOPEN(tp)) {
3325 			sc_switch_scr(scp->sc, sc->first_vty + i);
3326 			break;
3327 		    }
3328 		}
3329 		break;
3330 
3331 	    default:
3332 		if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
3333 		    sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
3334 		    break;
3335 		}
3336 		/* assert(c & FKEY) */
3337 		if (!(sc->flags & SC_SCRN_BLANKED))
3338 		    return c;
3339 		break;
3340 	    }
3341 	    /* goto next_code */
3342 	} else {
3343 	    /* regular keys (maybe MKEY is set) */
3344 	    if (!(sc->flags & SC_SCRN_BLANKED))
3345 		return c;
3346 	}
3347     }
3348 
3349     goto next_code;
3350 }
3351 
3352 static int
3353 scmmap(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int nprot)
3354 {
3355     scr_stat *scp;
3356 
3357     scp = sc_get_stat(dev);
3358     if (scp != scp->sc->cur_scp)
3359 	return -1;
3360     return (*vidsw[scp->sc->adapter]->mmap)(scp->sc->adp, offset, paddr, nprot);
3361 }
3362 
3363 static int
3364 save_kbd_state(scr_stat *scp)
3365 {
3366     int state;
3367     int error;
3368 
3369     error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3370     if (error == ENOIOCTL)
3371 	error = ENODEV;
3372     if (error == 0) {
3373 	scp->status &= ~LOCK_MASK;
3374 	scp->status |= state;
3375     }
3376     return error;
3377 }
3378 
3379 static int
3380 update_kbd_state(scr_stat *scp, int new_bits, int mask)
3381 {
3382     int state;
3383     int error;
3384 
3385     if (mask != LOCK_MASK) {
3386 	error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3387 	if (error == ENOIOCTL)
3388 	    error = ENODEV;
3389 	if (error)
3390 	    return error;
3391 	state &= ~mask;
3392 	state |= new_bits & mask;
3393     } else {
3394 	state = new_bits & LOCK_MASK;
3395     }
3396     error = kbd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
3397     if (error == ENOIOCTL)
3398 	error = ENODEV;
3399     return error;
3400 }
3401 
3402 static int
3403 update_kbd_leds(scr_stat *scp, int which)
3404 {
3405     int error;
3406 
3407     which &= LOCK_MASK;
3408     error = kbd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
3409     if (error == ENOIOCTL)
3410 	error = ENODEV;
3411     return error;
3412 }
3413 
3414 int
3415 set_mode(scr_stat *scp)
3416 {
3417     video_info_t info;
3418 
3419     /* reject unsupported mode */
3420     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, scp->mode, &info))
3421 	return 1;
3422 
3423     /* if this vty is not currently showing, do nothing */
3424     if (scp != scp->sc->cur_scp)
3425 	return 0;
3426 
3427     /* setup video hardware for the given mode */
3428     (*vidsw[scp->sc->adapter]->set_mode)(scp->sc->adp, scp->mode);
3429 #ifndef __sparc64__
3430     sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3431 		(void *)scp->sc->adp->va_window, FALSE);
3432 #endif
3433 
3434 #ifndef SC_NO_FONT_LOADING
3435     /* load appropriate font */
3436     if (!(scp->status & GRAPHICS_MODE)) {
3437 	if (!(scp->status & PIXEL_MODE) && ISFONTAVAIL(scp->sc->adp->va_flags)) {
3438 	    if (scp->font_size < 14) {
3439 		if (scp->sc->fonts_loaded & FONT_8)
3440 		    sc_load_font(scp, 0, 8, scp->sc->font_8, 0, 256);
3441 	    } else if (scp->font_size >= 16) {
3442 		if (scp->sc->fonts_loaded & FONT_16)
3443 		    sc_load_font(scp, 0, 16, scp->sc->font_16, 0, 256);
3444 	    } else {
3445 		if (scp->sc->fonts_loaded & FONT_14)
3446 		    sc_load_font(scp, 0, 14, scp->sc->font_14, 0, 256);
3447 	    }
3448 	    /*
3449 	     * FONT KLUDGE:
3450 	     * This is an interim kludge to display correct font.
3451 	     * Always use the font page #0 on the video plane 2.
3452 	     * Somehow we cannot show the font in other font pages on
3453 	     * some video cards... XXX
3454 	     */
3455 	    sc_show_font(scp, 0);
3456 	}
3457 	mark_all(scp);
3458     }
3459 #endif /* !SC_NO_FONT_LOADING */
3460 
3461     sc_set_border(scp, scp->border);
3462     sc_set_cursor_image(scp);
3463 
3464     return 0;
3465 }
3466 
3467 void
3468 sc_set_border(scr_stat *scp, int color)
3469 {
3470     ++scp->sc->videoio_in_progress;
3471     (*scp->rndr->draw_border)(scp, color);
3472     --scp->sc->videoio_in_progress;
3473 }
3474 
3475 #ifndef SC_NO_FONT_LOADING
3476 void
3477 sc_load_font(scr_stat *scp, int page, int size, u_char *buf,
3478 	     int base, int count)
3479 {
3480     sc_softc_t *sc;
3481 
3482     sc = scp->sc;
3483     sc->font_loading_in_progress = TRUE;
3484     (*vidsw[sc->adapter]->load_font)(sc->adp, page, size, buf, base, count);
3485     sc->font_loading_in_progress = FALSE;
3486 }
3487 
3488 void
3489 sc_save_font(scr_stat *scp, int page, int size, u_char *buf,
3490 	     int base, int count)
3491 {
3492     sc_softc_t *sc;
3493 
3494     sc = scp->sc;
3495     sc->font_loading_in_progress = TRUE;
3496     (*vidsw[sc->adapter]->save_font)(sc->adp, page, size, buf, base, count);
3497     sc->font_loading_in_progress = FALSE;
3498 }
3499 
3500 void
3501 sc_show_font(scr_stat *scp, int page)
3502 {
3503     (*vidsw[scp->sc->adapter]->show_font)(scp->sc->adp, page);
3504 }
3505 #endif /* !SC_NO_FONT_LOADING */
3506 
3507 void
3508 sc_paste(scr_stat *scp, u_char *p, int count)
3509 {
3510     struct tty *tp;
3511     u_char *rmap;
3512 
3513     tp = VIRTUAL_TTY(scp->sc, scp->sc->cur_scp->index);
3514     if (!ISTTYOPEN(tp))
3515 	return;
3516     rmap = scp->sc->scr_rmap;
3517     for (; count > 0; --count)
3518 	ttyld_rint(tp, rmap[*p++]);
3519 }
3520 
3521 void
3522 sc_bell(scr_stat *scp, int pitch, int duration)
3523 {
3524     if (cold || shutdown_in_progress || !enable_bell)
3525 	return;
3526 
3527     if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
3528 	return;
3529 
3530     if (scp->sc->flags & SC_VISUAL_BELL) {
3531 	if (scp->sc->blink_in_progress)
3532 	    return;
3533 	scp->sc->blink_in_progress = 3;
3534 	if (scp != scp->sc->cur_scp)
3535 	    scp->sc->blink_in_progress += 2;
3536 	blink_screen(scp->sc->cur_scp);
3537     } else if (duration != 0 && pitch != 0) {
3538 	if (scp != scp->sc->cur_scp)
3539 	    pitch *= 2;
3540 	sysbeep(pitch, duration);
3541     }
3542 }
3543 
3544 static void
3545 blink_screen(void *arg)
3546 {
3547     scr_stat *scp = arg;
3548     struct tty *tp;
3549 
3550     if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
3551 	scp->sc->blink_in_progress = 0;
3552     	mark_all(scp);
3553 	tp = VIRTUAL_TTY(scp->sc, scp->index);
3554 	if (ISTTYOPEN(tp))
3555 	    scstart(tp);
3556 	if (scp->sc->delayed_next_scr)
3557 	    sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
3558     }
3559     else {
3560 	(*scp->rndr->draw)(scp, 0, scp->xsize*scp->ysize,
3561 			   scp->sc->blink_in_progress & 1);
3562 	scp->sc->blink_in_progress--;
3563 	timeout(blink_screen, scp, hz / 10);
3564     }
3565 }
3566 
3567 /*
3568  * Until sc_attach_unit() gets called no dev structures will be available
3569  * to store the per-screen current status.  This is the case when the
3570  * kernel is initially booting and needs access to its console.  During
3571  * this early phase of booting the console's current status is kept in
3572  * one statically defined scr_stat structure, and any pointers to the
3573  * dev structures will be NULL.
3574  */
3575 
3576 static scr_stat *
3577 sc_get_stat(struct cdev *devptr)
3578 {
3579 	if (devptr == NULL)
3580 		return (&main_console);
3581 	return (SC_STAT(devptr));
3582 }
3583