syscons.c revision 76798
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 * $FreeBSD: head/sys/dev/syscons/syscons.c 76798 2001-05-18 08:52:56Z nik $
29 */
30
31#include "splash.h"
32#include "opt_syscons.h"
33#include "opt_ddb.h"
34#ifdef __i386__
35#include "opt_apm.h"
36#endif
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/conf.h>
41#include <sys/cons.h>
42#include <sys/consio.h>
43#include <sys/eventhandler.h>
44#include <sys/fbio.h>
45#include <sys/kbio.h>
46#include <sys/kernel.h>
47#include <sys/lock.h>
48#include <sys/malloc.h>
49#include <sys/mutex.h>
50#include <sys/proc.h>
51#include <sys/random.h>
52#include <sys/reboot.h>
53#include <sys/signalvar.h>
54#include <sys/sysctl.h>
55#include <sys/tty.h>
56
57#include <machine/clock.h>
58#include <machine/psl.h>
59#include <machine/pc/display.h>
60#ifdef __i386__
61#include <machine/apm_bios.h>
62#include <machine/frame.h>
63#endif
64
65#include <dev/kbd/kbdreg.h>
66#include <dev/fb/fbreg.h>
67#include <dev/fb/splashreg.h>
68#include <dev/syscons/syscons.h>
69
70#define COLD 0
71#define WARM 1
72
73#define DEFAULT_BLANKTIME	(5*60)		/* 5 minutes */
74#define MAX_BLANKTIME		(7*24*60*60)	/* 7 days!? */
75
76#define KEYCODE_BS		0x0e		/* "<-- Backspace" key, XXX */
77
78typedef struct default_attr {
79	int		std_color;		/* normal hardware color */
80	int		rev_color;		/* reverse hardware color */
81} default_attr;
82
83static default_attr user_default = {
84    SC_NORM_ATTR,
85    SC_NORM_REV_ATTR,
86};
87
88static default_attr kernel_default = {
89    SC_KERNEL_CONS_ATTR,
90    SC_KERNEL_CONS_REV_ATTR,
91};
92
93static	int		sc_console_unit = -1;
94static  scr_stat    	*sc_console;
95static	struct tty	*sc_console_tty;
96static	void		*kernel_console_ts;
97
98static  char        	init_done = COLD;
99static  char		shutdown_in_progress = FALSE;
100static	char		sc_malloc = FALSE;
101
102static	int		saver_mode = CONS_LKM_SAVER; /* LKM/user saver */
103static	int		run_scrn_saver = FALSE;	/* should run the saver? */
104static	long        	scrn_blank_time = 0;    /* screen saver timeout value */
105#if NSPLASH > 0
106static	int     	scrn_blanked;		/* # of blanked screen */
107static	int		sticky_splash = FALSE;
108
109static	void		none_saver(sc_softc_t *sc, int blank) { }
110static	void		(*current_saver)(sc_softc_t *, int) = none_saver;
111#endif
112
113#if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
114#include "font.h"
115#endif
116
117	d_ioctl_t	*sc_user_ioctl;
118
119static	bios_values_t	bios_value;
120
121static	int		enable_panic_key;
122SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
123	   0, "");
124
125#define SC_CONSOLECTL	255
126
127#define VIRTUAL_TTY(sc, x) (SC_DEV((sc), (x))->si_tty)
128
129static	int		debugger;
130
131/* prototypes */
132static int scvidprobe(int unit, int flags, int cons);
133static int sckbdprobe(int unit, int flags, int cons);
134static void scmeminit(void *arg);
135static int scdevtounit(dev_t dev);
136static kbd_callback_func_t sckbdevent;
137static int scparam(struct tty *tp, struct termios *t);
138static void scstart(struct tty *tp);
139static void scinit(int unit, int flags);
140#if __i386__
141static void scterm(int unit, int flags);
142#endif
143static void scshutdown(void *arg, int howto);
144static u_int scgetc(sc_softc_t *sc, u_int flags);
145#define SCGETC_CN	1
146#define SCGETC_NONBLOCK	2
147static int sccngetch(int flags);
148static void sccnupdate(scr_stat *scp);
149static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
150static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
151static timeout_t scrn_timer;
152static int and_region(int *s1, int *e1, int s2, int e2);
153static void scrn_update(scr_stat *scp, int show_cursor);
154
155#if NSPLASH > 0
156static int scsplash_callback(int event, void *arg);
157static void scsplash_saver(sc_softc_t *sc, int show);
158static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
159static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
160static int set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border);
161static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
162static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
163static int wait_scrn_saver_stop(sc_softc_t *sc);
164#define scsplash_stick(stick)		(sticky_splash = (stick))
165#else /* !NSPLASH */
166#define scsplash_stick(stick)
167#endif /* NSPLASH */
168
169static int do_switch_scr(sc_softc_t *sc, int s);
170static int vt_proc_alive(scr_stat *scp);
171static int signal_vt_rel(scr_stat *scp);
172static int signal_vt_acq(scr_stat *scp);
173static void exchange_scr(sc_softc_t *sc);
174static void update_cursor_image(scr_stat *scp);
175static int save_kbd_state(scr_stat *scp);
176static int update_kbd_state(scr_stat *scp, int state, int mask);
177static int update_kbd_leds(scr_stat *scp, int which);
178static timeout_t blink_screen;
179
180#define	CDEV_MAJOR	12
181
182static cn_probe_t	sccnprobe;
183static cn_init_t	sccninit;
184static cn_getc_t	sccngetc;
185static cn_checkc_t	sccncheckc;
186static cn_putc_t	sccnputc;
187static cn_dbctl_t	sccndbctl;
188static cn_term_t	sccnterm;
189
190#if __alpha__
191void sccnattach(void);
192#endif
193
194CONS_DRIVER(sc, sccnprobe, sccninit, sccnterm, sccngetc, sccncheckc, sccnputc,
195	    sccndbctl);
196
197static	d_open_t	scopen;
198static	d_close_t	scclose;
199static	d_read_t	scread;
200static	d_ioctl_t	scioctl;
201static	d_mmap_t	scmmap;
202
203static struct cdevsw sc_cdevsw = {
204	/* open */	scopen,
205	/* close */	scclose,
206	/* read */	scread,
207	/* write */	ttywrite,
208	/* ioctl */	scioctl,
209	/* poll */	ttypoll,
210	/* mmap */	scmmap,
211	/* strategy */	nostrategy,
212	/* name */	"sc",
213	/* maj */	CDEV_MAJOR,
214	/* dump */	nodump,
215	/* psize */	nopsize,
216	/* flags */	D_TTY,
217};
218
219int
220sc_probe_unit(int unit, int flags)
221{
222    if (!scvidprobe(unit, flags, FALSE)) {
223	if (bootverbose)
224	    printf("sc%d: no video adapter is found.\n", unit);
225	return ENXIO;
226    }
227
228    /* syscons will be attached even when there is no keyboard */
229    sckbdprobe(unit, flags, FALSE);
230
231    return 0;
232}
233
234/* probe video adapters, return TRUE if found */
235static int
236scvidprobe(int unit, int flags, int cons)
237{
238    /*
239     * Access the video adapter driver through the back door!
240     * Video adapter drivers need to be configured before syscons.
241     * However, when syscons is being probed as the low-level console,
242     * they have not been initialized yet.  We force them to initialize
243     * themselves here. XXX
244     */
245    vid_configure(cons ? VIO_PROBE_ONLY : 0);
246
247    return (vid_find_adapter("*", unit) >= 0);
248}
249
250/* probe the keyboard, return TRUE if found */
251static int
252sckbdprobe(int unit, int flags, int cons)
253{
254    /* access the keyboard driver through the backdoor! */
255    kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
256
257    return (kbd_find_keyboard("*", unit) >= 0);
258}
259
260static char
261*adapter_name(video_adapter_t *adp)
262{
263    static struct {
264	int type;
265	char *name[2];
266    } names[] = {
267	{ KD_MONO,	{ "MDA",	"MDA" } },
268	{ KD_HERCULES,	{ "Hercules",	"Hercules" } },
269	{ KD_CGA,	{ "CGA",	"CGA" } },
270	{ KD_EGA,	{ "EGA",	"EGA (mono)" } },
271	{ KD_VGA,	{ "VGA",	"VGA (mono)" } },
272	{ KD_PC98,	{ "PC-98x1",	"PC-98x1" } },
273	{ KD_TGA,	{ "TGA",	"TGA" } },
274	{ -1,		{ "Unknown",	"Unknown" } },
275    };
276    int i;
277
278    for (i = 0; names[i].type != -1; ++i)
279	if (names[i].type == adp->va_type)
280	    break;
281    return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
282}
283
284int
285sc_attach_unit(int unit, int flags)
286{
287    sc_softc_t *sc;
288    scr_stat *scp;
289#ifdef SC_PIXEL_MODE
290    video_info_t info;
291#endif
292    int vc;
293    dev_t dev;
294
295    flags &= ~SC_KERNEL_CONSOLE;
296
297    if (sc_console_unit == unit) {
298	/*
299	 * If this unit is being used as the system console, we need to
300	 * adjust some variables and buffers before and after scinit().
301	 */
302	/* assert(sc_console != NULL) */
303	flags |= SC_KERNEL_CONSOLE;
304	scmeminit(NULL);
305
306	scinit(unit, flags);
307
308	if (sc_console->tsw->te_size > 0) {
309	    /* assert(sc_console->ts != NULL); */
310	    kernel_console_ts = sc_console->ts;
311	    sc_console->ts = malloc(sc_console->tsw->te_size,
312				    M_DEVBUF, M_WAITOK);
313	    bcopy(kernel_console_ts, sc_console->ts, sc_console->tsw->te_size);
314    	    (*sc_console->tsw->te_default_attr)(sc_console,
315						user_default.std_color,
316						user_default.rev_color);
317	}
318    } else {
319	scinit(unit, flags);
320    }
321
322    sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
323    sc->config = flags;
324    scp = SC_STAT(sc->dev[0]);
325    if (sc_console == NULL)	/* sc_console_unit < 0 */
326	sc_console = scp;
327
328#ifdef SC_PIXEL_MODE
329    if ((sc->config & SC_VESA800X600)
330	&& ((*vidsw[sc->adapter]->get_info)(sc->adp, M_VESA_800x600, &info) == 0)) {
331#if NSPLASH > 0
332	if (sc->flags & SC_SPLASH_SCRN)
333	    splash_term(sc->adp);
334#endif
335	sc_set_graphics_mode(scp, NULL, M_VESA_800x600);
336	sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
337	sc->initial_mode = M_VESA_800x600;
338#if NSPLASH > 0
339	/* put up the splash again! */
340	if (sc->flags & SC_SPLASH_SCRN)
341    	    splash_init(sc->adp, scsplash_callback, sc);
342#endif
343    }
344#endif /* SC_PIXEL_MODE */
345
346    /* initialize cursor */
347    if (!ISGRAPHSC(scp))
348    	update_cursor_image(scp);
349
350    /* get screen update going */
351    scrn_timer(sc);
352
353    /* set up the keyboard */
354    kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
355    update_kbd_state(scp, scp->status, LOCK_MASK);
356
357    printf("sc%d: %s <%d virtual consoles, flags=0x%x>\n",
358	   unit, adapter_name(sc->adp), sc->vtys, sc->config);
359    if (bootverbose) {
360	printf("sc%d:", unit);
361    	if (sc->adapter >= 0)
362	    printf(" fb%d", sc->adapter);
363	if (sc->keyboard >= 0)
364	    printf(", kbd%d", sc->keyboard);
365	if (scp->tsw)
366	    printf(", terminal emulator: %s (%s)",
367		   scp->tsw->te_name, scp->tsw->te_desc);
368	printf("\n");
369    }
370
371    /* register a shutdown callback for the kernel console */
372    if (sc_console_unit == unit)
373	EVENTHANDLER_REGISTER(shutdown_pre_sync, scshutdown,
374			      (void *)(uintptr_t)unit, SHUTDOWN_PRI_DEFAULT);
375
376    for (vc = 0; vc < sc->vtys; vc++) {
377	dev = make_dev(&sc_cdevsw, vc + unit * MAXCONS,
378	    UID_ROOT, GID_WHEEL, 0600, "ttyv%r", vc + unit * MAXCONS);
379	sc->dev[vc] = dev;
380	/*
381	 * The first vty already has struct tty and scr_stat initialized
382	 * in scinit().  The other vtys will have these structs when
383	 * first opened.
384	 */
385    }
386
387    dev = make_dev(&sc_cdevsw, SC_CONSOLECTL,
388		   UID_ROOT, GID_WHEEL, 0600, "consolectl");
389    dev->si_tty = sc_console_tty = ttymalloc(sc_console_tty);
390    SC_STAT(dev) = sc_console;
391
392    return 0;
393}
394
395static void
396scmeminit(void *arg)
397{
398    if (sc_malloc)
399	return;
400    sc_malloc = TRUE;
401
402    /*
403     * As soon as malloc() becomes functional, we had better allocate
404     * various buffers for the kernel console.
405     */
406
407    if (sc_console_unit < 0)	/* sc_console == NULL */
408	return;
409
410    /* copy the temporary buffer to the final buffer */
411    sc_alloc_scr_buffer(sc_console, FALSE, FALSE);
412
413#ifndef SC_NO_CUTPASTE
414    /* cut buffer is available only when the mouse pointer is used */
415    if (ISMOUSEAVAIL(sc_console->sc->adp->va_flags))
416	sc_alloc_cut_buffer(sc_console, FALSE);
417#endif
418
419#ifndef SC_NO_HISTORY
420    /* initialize history buffer & pointers */
421    sc_alloc_history_buffer(sc_console, 0, 0, FALSE);
422#endif
423}
424
425/* XXX */
426SYSINIT(sc_mem, SI_SUB_KMEM, SI_ORDER_ANY, scmeminit, NULL);
427
428int
429sc_resume_unit(int unit)
430{
431    /* XXX should be moved to the keyboard driver? */
432    sc_softc_t *sc;
433
434    sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
435    if (sc->kbd != NULL)
436	kbd_clear_state(sc->kbd);
437    return 0;
438}
439
440static int
441scdevtounit(dev_t dev)
442{
443    int vty = SC_VTY(dev);
444
445    if (vty == SC_CONSOLECTL)
446	return ((sc_console != NULL) ? sc_console->sc->unit : -1);
447    else if ((vty < 0) || (vty >= MAXCONS*sc_max_unit()))
448	return -1;
449    else
450	return vty/MAXCONS;
451}
452
453int
454scopen(dev_t dev, int flag, int mode, struct proc *p)
455{
456    int unit = scdevtounit(dev);
457    sc_softc_t *sc;
458    struct tty *tp;
459    scr_stat *scp;
460    keyarg_t key;
461    int error;
462
463    DPRINTF(5, ("scopen: dev:%d,%d, unit:%d, vty:%d\n",
464		major(dev), minor(dev), unit, SC_VTY(dev)));
465
466    sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
467    if (sc == NULL)
468	return ENXIO;
469
470    tp = dev->si_tty = ttymalloc(dev->si_tty);
471    tp->t_oproc = scstart;
472    tp->t_param = scparam;
473    tp->t_stop = nottystop;
474    tp->t_dev = dev;
475    if (!(tp->t_state & TS_ISOPEN)) {
476	ttychars(tp);
477        /* Use the current setting of the <-- key as default VERASE. */
478        /* If the Delete key is preferable, an stty is necessary     */
479	if (sc != NULL) {
480	    key.keynum = KEYCODE_BS;
481	    kbd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
482            tp->t_cc[VERASE] = key.key.map[0];
483	}
484	tp->t_iflag = TTYDEF_IFLAG;
485	tp->t_oflag = TTYDEF_OFLAG;
486	tp->t_cflag = TTYDEF_CFLAG;
487	tp->t_lflag = TTYDEF_LFLAG;
488	tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
489	scparam(tp, &tp->t_termios);
490	(*linesw[tp->t_line].l_modem)(tp, 1);
491    }
492    else
493	if (tp->t_state & TS_XCLUDE && suser(p))
494	    return(EBUSY);
495
496    error = (*linesw[tp->t_line].l_open)(dev, tp);
497
498    scp = SC_STAT(dev);
499    if (scp == NULL) {
500	scp = SC_STAT(dev) = alloc_scp(sc, SC_VTY(dev));
501	if (ISGRAPHSC(scp))
502	    sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
503    }
504    if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
505	tp->t_winsize.ws_col = scp->xsize;
506	tp->t_winsize.ws_row = scp->ysize;
507    }
508
509    return error;
510}
511
512int
513scclose(dev_t dev, int flag, int mode, struct proc *p)
514{
515    struct tty *tp = dev->si_tty;
516    scr_stat *scp;
517    int s;
518
519    if (SC_VTY(dev) != SC_CONSOLECTL) {
520	scp = SC_STAT(tp->t_dev);
521	/* were we in the middle of the VT switching process? */
522	DPRINTF(5, ("sc%d: scclose(), ", scp->sc->unit));
523	s = spltty();
524	if ((scp == scp->sc->cur_scp) && (scp->sc->unit == sc_console_unit))
525	    cons_unavail = FALSE;
526	if (scp->status & SWITCH_WAIT_REL) {
527	    /* assert(scp == scp->sc->cur_scp) */
528	    DPRINTF(5, ("reset WAIT_REL, "));
529	    scp->status &= ~SWITCH_WAIT_REL;
530	    do_switch_scr(scp->sc, s);
531	}
532	if (scp->status & SWITCH_WAIT_ACQ) {
533	    /* assert(scp == scp->sc->cur_scp) */
534	    DPRINTF(5, ("reset WAIT_ACQ, "));
535	    scp->status &= ~SWITCH_WAIT_ACQ;
536	    scp->sc->switch_in_progress = 0;
537	}
538#if not_yet_done
539	if (scp == &main_console) {
540	    scp->pid = 0;
541	    scp->proc = NULL;
542	    scp->smode.mode = VT_AUTO;
543	}
544	else {
545	    sc_vtb_destroy(&scp->vtb);
546	    sc_vtb_destroy(&scp->scr);
547	    sc_free_history_buffer(scp, scp->ysize);
548	    SC_STAT(dev) = NULL;
549	    free(scp, M_DEVBUF);
550	}
551#else
552	scp->pid = 0;
553	scp->proc = NULL;
554	scp->smode.mode = VT_AUTO;
555#endif
556	scp->kbd_mode = K_XLATE;
557	if (scp == scp->sc->cur_scp)
558	    kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
559	DPRINTF(5, ("done.\n"));
560    }
561    spltty();
562    (*linesw[tp->t_line].l_close)(tp, flag);
563    ttyclose(tp);
564    spl0();
565    return(0);
566}
567
568int
569scread(dev_t dev, struct uio *uio, int flag)
570{
571    sc_touch_scrn_saver();
572    return ttyread(dev, uio, flag);
573}
574
575static int
576sckbdevent(keyboard_t *thiskbd, int event, void *arg)
577{
578    sc_softc_t *sc;
579    struct tty *cur_tty;
580    int c;
581    size_t len;
582    u_char *cp;
583
584    sc = (sc_softc_t *)arg;
585    /* assert(thiskbd == sc->kbd) */
586
587    switch (event) {
588    case KBDIO_KEYINPUT:
589	break;
590    case KBDIO_UNLOADING:
591	sc->kbd = NULL;
592	sc->keyboard = -1;
593	kbd_release(thiskbd, (void *)&sc->keyboard);
594	return 0;
595    default:
596	return EINVAL;
597    }
598
599    /*
600     * Loop while there is still input to get from the keyboard.
601     * I don't think this is nessesary, and it doesn't fix
602     * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
603     */
604    while ((c = scgetc(sc, SCGETC_NONBLOCK)) != NOKEY) {
605
606	cur_tty = VIRTUAL_TTY(sc, sc->cur_scp->index);
607	/* XXX */
608	if (!(cur_tty->t_state & TS_ISOPEN))
609	    if (((cur_tty = sc_console_tty) == NULL)
610	    	|| !(cur_tty->t_state & TS_ISOPEN))
611		continue;
612
613	if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
614	    continue;
615
616	switch (KEYFLAGS(c)) {
617	case 0x0000: /* normal key */
618	    (*linesw[cur_tty->t_line].l_rint)(KEYCHAR(c), cur_tty);
619	    break;
620	case FKEY:  /* function key, return string */
621	    cp = kbd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
622	    if (cp != NULL) {
623	    	while (len-- >  0)
624		    (*linesw[cur_tty->t_line].l_rint)(*cp++, cur_tty);
625	    }
626	    break;
627	case MKEY:  /* meta is active, prepend ESC */
628	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
629	    (*linesw[cur_tty->t_line].l_rint)(KEYCHAR(c), cur_tty);
630	    break;
631	case BKEY:  /* backtab fixed sequence (esc [ Z) */
632	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
633	    (*linesw[cur_tty->t_line].l_rint)('[', cur_tty);
634	    (*linesw[cur_tty->t_line].l_rint)('Z', cur_tty);
635	    break;
636	}
637    }
638
639    sc->cur_scp->status |= MOUSE_HIDDEN;
640
641    return 0;
642}
643
644static int
645scparam(struct tty *tp, struct termios *t)
646{
647    tp->t_ispeed = t->c_ispeed;
648    tp->t_ospeed = t->c_ospeed;
649    tp->t_cflag = t->c_cflag;
650    return 0;
651}
652
653int
654scioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
655{
656    int error;
657    int i;
658    struct tty *tp;
659    sc_softc_t *sc;
660    scr_stat *scp;
661    int s;
662
663    tp = dev->si_tty;
664
665    /* If there is a user_ioctl function call that first */
666    if (sc_user_ioctl) {
667	error = (*sc_user_ioctl)(dev, cmd, data, flag, p);
668	if (error != ENOIOCTL)
669	    return error;
670    }
671
672    error = sc_vid_ioctl(tp, cmd, data, flag, p);
673    if (error != ENOIOCTL)
674	return error;
675
676#ifndef SC_NO_HISTORY
677    error = sc_hist_ioctl(tp, cmd, data, flag, p);
678    if (error != ENOIOCTL)
679	return error;
680#endif
681
682#ifndef SC_NO_SYSMOUSE
683    error = sc_mouse_ioctl(tp, cmd, data, flag, p);
684    if (error != ENOIOCTL)
685	return error;
686#endif
687
688    scp = SC_STAT(tp->t_dev);
689    /* assert(scp != NULL) */
690    /* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
691    sc = scp->sc;
692
693    if (scp->tsw) {
694	error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, flag, p);
695	if (error != ENOIOCTL)
696	    return error;
697    }
698
699    switch (cmd) {  		/* process console hardware related ioctl's */
700
701    case GIO_ATTR:      	/* get current attributes */
702	/* this ioctl is not processed here, but in the terminal emulator */
703	return ENOTTY;
704
705    case GIO_COLOR:     	/* is this a color console ? */
706	*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
707	return 0;
708
709    case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
710	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
711            return EINVAL;
712	s = spltty();
713	scrn_blank_time = *(int *)data;
714	run_scrn_saver = (scrn_blank_time != 0);
715	splx(s);
716	return 0;
717
718    case CONS_CURSORTYPE:   	/* set cursor type blink/noblink */
719	s = spltty();
720	if (!ISGRAPHSC(sc->cur_scp))
721	    sc_remove_cursor_image(sc->cur_scp);
722	if ((*(int*)data) & 0x01)
723	    sc->flags |= SC_BLINK_CURSOR;
724	else
725	    sc->flags &= ~SC_BLINK_CURSOR;
726	if ((*(int*)data) & 0x02) {
727	    sc->flags |= SC_CHAR_CURSOR;
728	} else
729	    sc->flags &= ~SC_CHAR_CURSOR;
730	/*
731	 * The cursor shape is global property; all virtual consoles
732	 * are affected. Update the cursor in the current console...
733	 */
734	if (!ISGRAPHSC(sc->cur_scp)) {
735	    sc_set_cursor_image(sc->cur_scp);
736	    sc_draw_cursor_image(sc->cur_scp);
737	}
738	splx(s);
739	return 0;
740
741    case CONS_BELLTYPE: 	/* set bell type sound/visual */
742	if ((*(int *)data) & 0x01)
743	    sc->flags |= SC_VISUAL_BELL;
744	else
745	    sc->flags &= ~SC_VISUAL_BELL;
746	if ((*(int *)data) & 0x02)
747	    sc->flags |= SC_QUIET_BELL;
748	else
749	    sc->flags &= ~SC_QUIET_BELL;
750	return 0;
751
752    case CONS_GETINFO:  	/* get current (virtual) console info */
753    {
754	vid_info_t *ptr = (vid_info_t*)data;
755	if (ptr->size == sizeof(struct vid_info)) {
756	    ptr->m_num = sc->cur_scp->index;
757	    ptr->mv_col = scp->xpos;
758	    ptr->mv_row = scp->ypos;
759	    ptr->mv_csz = scp->xsize;
760	    ptr->mv_rsz = scp->ysize;
761	    /*
762	     * The following fields are filled by the terminal emulator. XXX
763	     *
764	     * ptr->mv_norm.fore
765	     * ptr->mv_norm.back
766	     * ptr->mv_rev.fore
767	     * ptr->mv_rev.back
768	     */
769	    ptr->mv_grfc.fore = 0;      /* not supported */
770	    ptr->mv_grfc.back = 0;      /* not supported */
771	    ptr->mv_ovscan = scp->border;
772	    if (scp == sc->cur_scp)
773		save_kbd_state(scp);
774	    ptr->mk_keylock = scp->status & LOCK_MASK;
775	    return 0;
776	}
777	return EINVAL;
778    }
779
780    case CONS_GETVERS:  	/* get version number */
781	*(int*)data = 0x200;    /* version 2.0 */
782	return 0;
783
784    case CONS_IDLE:		/* see if the screen has been idle */
785	/*
786	 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
787	 * the user process may have been writing something on the
788	 * screen and syscons is not aware of it. Declare the screen
789	 * is NOT idle if it is in one of these modes. But there is
790	 * an exception to it; if a screen saver is running in the
791	 * graphics mode in the current screen, we should say that the
792	 * screen has been idle.
793	 */
794	*(int *)data = (sc->flags & SC_SCRN_IDLE)
795		       && (!ISGRAPHSC(sc->cur_scp)
796			   || (sc->cur_scp->status & SAVER_RUNNING));
797	return 0;
798
799    case CONS_SAVERMODE:	/* set saver mode */
800	switch(*(int *)data) {
801	case CONS_USR_SAVER:
802	    /* if a LKM screen saver is running, stop it first. */
803	    scsplash_stick(FALSE);
804	    saver_mode = *(int *)data;
805	    s = spltty();
806#if NSPLASH > 0
807	    if ((error = wait_scrn_saver_stop(NULL))) {
808		splx(s);
809		return error;
810	    }
811#endif /* NSPLASH */
812	    run_scrn_saver = TRUE;
813	    scp->status |= SAVER_RUNNING;
814	    scsplash_stick(TRUE);
815	    splx(s);
816	    break;
817	case CONS_LKM_SAVER:
818	    s = spltty();
819	    if ((saver_mode == CONS_USR_SAVER) && (scp->status & SAVER_RUNNING))
820		scp->status &= ~SAVER_RUNNING;
821	    saver_mode = *(int *)data;
822	    splx(s);
823	    break;
824	default:
825	    return EINVAL;
826	}
827	return 0;
828
829    case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
830	/*
831	 * Note that this ioctl does not guarantee the screen saver
832	 * actually starts or stops. It merely attempts to do so...
833	 */
834	s = spltty();
835	run_scrn_saver = (*(int *)data != 0);
836	if (run_scrn_saver)
837	    sc->scrn_time_stamp -= scrn_blank_time;
838	splx(s);
839	return 0;
840
841    case CONS_SCRSHOT:		/* get a screen shot */
842    {
843	scrshot_t *ptr = (scrshot_t*)data;
844	s = spltty();
845	if (ISGRAPHSC(scp)) {
846	    splx(s);
847	    return EOPNOTSUPP;
848	}
849	if (scp->xsize != ptr->xsize || scp->ysize != ptr->ysize) {
850	    splx(s);
851	    return EINVAL;
852	}
853	copyout ((void*)scp->vtb.vtb_buffer, ptr->buf,
854		 ptr->xsize * ptr->ysize * sizeof(u_int16_t));
855	splx(s);
856	return 0;
857    }
858
859    case VT_SETMODE:    	/* set screen switcher mode */
860    {
861	struct vt_mode *mode;
862	struct proc *p1;
863
864	mode = (struct vt_mode *)data;
865	DPRINTF(5, ("sc%d: VT_SETMODE ", sc->unit));
866	if (scp->smode.mode == VT_PROCESS) {
867	    p1 = pfind(scp->pid);
868    	    if (scp->proc == p1 && scp->proc != p) {
869		if (p1)
870		    PROC_UNLOCK(p1);
871		DPRINTF(5, ("error EPERM\n"));
872		return EPERM;
873	    }
874	    if (p1)
875		PROC_UNLOCK(p1);
876	}
877	s = spltty();
878	if (mode->mode == VT_AUTO) {
879	    scp->smode.mode = VT_AUTO;
880	    scp->proc = NULL;
881	    scp->pid = 0;
882	    DPRINTF(5, ("VT_AUTO, "));
883	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
884		cons_unavail = FALSE;
885	    /* were we in the middle of the vty switching process? */
886	    if (scp->status & SWITCH_WAIT_REL) {
887		/* assert(scp == scp->sc->cur_scp) */
888		DPRINTF(5, ("reset WAIT_REL, "));
889		scp->status &= ~SWITCH_WAIT_REL;
890		s = do_switch_scr(sc, s);
891	    }
892	    if (scp->status & SWITCH_WAIT_ACQ) {
893		/* assert(scp == scp->sc->cur_scp) */
894		DPRINTF(5, ("reset WAIT_ACQ, "));
895		scp->status &= ~SWITCH_WAIT_ACQ;
896		sc->switch_in_progress = 0;
897	    }
898	} else {
899	    if (!ISSIGVALID(mode->relsig) || !ISSIGVALID(mode->acqsig)
900		|| !ISSIGVALID(mode->frsig)) {
901		splx(s);
902		DPRINTF(5, ("error EINVAL\n"));
903		return EINVAL;
904	    }
905	    DPRINTF(5, ("VT_PROCESS %d, ", p->p_pid));
906	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
907	    scp->proc = p;
908	    scp->pid = scp->proc->p_pid;
909	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
910		cons_unavail = TRUE;
911	}
912	splx(s);
913	DPRINTF(5, ("\n"));
914	return 0;
915    }
916
917    case VT_GETMODE:    	/* get screen switcher mode */
918	bcopy(&scp->smode, data, sizeof(struct vt_mode));
919	return 0;
920
921    case VT_RELDISP:    	/* screen switcher ioctl */
922	s = spltty();
923	/*
924	 * This must be the current vty which is in the VT_PROCESS
925	 * switching mode...
926	 */
927	if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
928	    splx(s);
929	    return EINVAL;
930	}
931	/* ...and this process is controlling it. */
932	if (scp->proc != p) {
933	    splx(s);
934	    return EPERM;
935	}
936	error = EINVAL;
937	switch(*(int *)data) {
938	case VT_FALSE:  	/* user refuses to release screen, abort */
939	    if ((scp == sc->old_scp) && (scp->status & SWITCH_WAIT_REL)) {
940		sc->old_scp->status &= ~SWITCH_WAIT_REL;
941		sc->switch_in_progress = 0;
942		DPRINTF(5, ("sc%d: VT_FALSE\n", sc->unit));
943		error = 0;
944	    }
945	    break;
946
947	case VT_TRUE:   	/* user has released screen, go on */
948	    if ((scp == sc->old_scp) && (scp->status & SWITCH_WAIT_REL)) {
949		scp->status &= ~SWITCH_WAIT_REL;
950		s = do_switch_scr(sc, s);
951		DPRINTF(5, ("sc%d: VT_TRUE\n", sc->unit));
952		error = 0;
953	    }
954	    break;
955
956	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
957	    if ((scp == sc->new_scp) && (scp->status & SWITCH_WAIT_ACQ)) {
958		scp->status &= ~SWITCH_WAIT_ACQ;
959		sc->switch_in_progress = 0;
960		DPRINTF(5, ("sc%d: VT_ACKACQ\n", sc->unit));
961		error = 0;
962	    }
963	    break;
964
965	default:
966	    break;
967	}
968	splx(s);
969	return error;
970
971    case VT_OPENQRY:    	/* return free virtual console */
972	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
973	    tp = VIRTUAL_TTY(sc, i);
974	    if ((tp == NULL) || !(tp->t_state & TS_ISOPEN)) {
975		*(int *)data = i + 1;
976		return 0;
977	    }
978	}
979	return EINVAL;
980
981    case VT_ACTIVATE:   	/* switch to screen *data */
982	s = spltty();
983	sc_clean_up(sc->cur_scp);
984	splx(s);
985	return sc_switch_scr(sc, *(int *)data - 1);
986
987    case VT_WAITACTIVE: 	/* wait for switch to occur */
988	if ((*(int *)data >= sc->first_vty + sc->vtys)
989		|| (*(int *)data < sc->first_vty))
990	    return EINVAL;
991	s = spltty();
992	error = sc_clean_up(sc->cur_scp);
993	splx(s);
994	if (error)
995	    return error;
996	if (*(int *)data != 0)
997	    scp = SC_STAT(SC_DEV(sc, *(int *)data - 1));
998	if (scp == scp->sc->cur_scp)
999	    return 0;
1000	while ((error=tsleep((caddr_t)&scp->smode, PZERO|PCATCH,
1001			     "waitvt", 0)) == ERESTART) ;
1002	return error;
1003
1004    case VT_GETACTIVE:		/* get active vty # */
1005	*(int *)data = sc->cur_scp->index + 1;
1006	return 0;
1007
1008    case VT_GETINDEX:		/* get this vty # */
1009	*(int *)data = scp->index + 1;
1010	return 0;
1011
1012    case KDENABIO:      	/* allow io operations */
1013	error = suser(p);
1014	if (error != 0)
1015	    return error;
1016	if (securelevel > 0)
1017	    return EPERM;
1018#ifdef __i386__
1019	p->p_md.md_regs->tf_eflags |= PSL_IOPL;
1020#endif
1021	return 0;
1022
1023    case KDDISABIO:     	/* disallow io operations (default) */
1024#ifdef __i386__
1025	p->p_md.md_regs->tf_eflags &= ~PSL_IOPL;
1026#endif
1027	return 0;
1028
1029    case KDSKBSTATE:    	/* set keyboard state (locks) */
1030	if (*(int *)data & ~LOCK_MASK)
1031	    return EINVAL;
1032	scp->status &= ~LOCK_MASK;
1033	scp->status |= *(int *)data;
1034	if (scp == sc->cur_scp)
1035	    update_kbd_state(scp, scp->status, LOCK_MASK);
1036	return 0;
1037
1038    case KDGKBSTATE:    	/* get keyboard state (locks) */
1039	if (scp == sc->cur_scp)
1040	    save_kbd_state(scp);
1041	*(int *)data = scp->status & LOCK_MASK;
1042	return 0;
1043
1044    case KDGETREPEAT:      	/* get keyboard repeat & delay rates */
1045    case KDSETREPEAT:      	/* set keyboard repeat & delay rates (new) */
1046	error = kbd_ioctl(sc->kbd, cmd, data);
1047	if (error == ENOIOCTL)
1048	    error = ENODEV;
1049	return error;
1050
1051    case KDSETRAD:      	/* set keyboard repeat & delay rates (old) */
1052	if (*(int *)data & ~0x7f)
1053	    return EINVAL;
1054	error = kbd_ioctl(sc->kbd, cmd, data);
1055	if (error == ENOIOCTL)
1056	    error = ENODEV;
1057	return error;
1058
1059    case KDSKBMODE:     	/* set keyboard mode */
1060	switch (*(int *)data) {
1061	case K_XLATE:   	/* switch to XLT ascii mode */
1062	case K_RAW: 		/* switch to RAW scancode mode */
1063	case K_CODE: 		/* switch to CODE mode */
1064	    scp->kbd_mode = *(int *)data;
1065	    if (scp == sc->cur_scp)
1066		kbd_ioctl(sc->kbd, cmd, data);
1067	    return 0;
1068	default:
1069	    return EINVAL;
1070	}
1071	/* NOT REACHED */
1072
1073    case KDGKBMODE:     	/* get keyboard mode */
1074	*(int *)data = scp->kbd_mode;
1075	return 0;
1076
1077    case KDGKBINFO:
1078	error = kbd_ioctl(sc->kbd, cmd, data);
1079	if (error == ENOIOCTL)
1080	    error = ENODEV;
1081	return error;
1082
1083    case KDMKTONE:      	/* sound the bell */
1084	if (*(int*)data)
1085	    sc_bell(scp, (*(int*)data)&0xffff,
1086		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1087	else
1088	    sc_bell(scp, scp->bell_pitch, scp->bell_duration);
1089	return 0;
1090
1091    case KIOCSOUND:     	/* make tone (*data) hz */
1092	if (scp == sc->cur_scp) {
1093	    if (*(int *)data)
1094		return sc_tone(*(int *)data);
1095	    else
1096		return sc_tone(0);
1097	}
1098	return 0;
1099
1100    case KDGKBTYPE:     	/* get keyboard type */
1101	error = kbd_ioctl(sc->kbd, cmd, data);
1102	if (error == ENOIOCTL) {
1103	    /* always return something? XXX */
1104	    *(int *)data = 0;
1105	}
1106	return 0;
1107
1108    case KDSETLED:      	/* set keyboard LED status */
1109	if (*(int *)data & ~LED_MASK)	/* FIXME: LOCK_MASK? */
1110	    return EINVAL;
1111	scp->status &= ~LED_MASK;
1112	scp->status |= *(int *)data;
1113	if (scp == sc->cur_scp)
1114	    update_kbd_leds(scp, scp->status);
1115	return 0;
1116
1117    case KDGETLED:      	/* get keyboard LED status */
1118	if (scp == sc->cur_scp)
1119	    save_kbd_state(scp);
1120	*(int *)data = scp->status & LED_MASK;
1121	return 0;
1122
1123    case CONS_SETKBD: 		/* set the new keyboard */
1124	{
1125	    keyboard_t *newkbd;
1126
1127	    s = spltty();
1128	    newkbd = kbd_get_keyboard(*(int *)data);
1129	    if (newkbd == NULL) {
1130		splx(s);
1131		return EINVAL;
1132	    }
1133	    error = 0;
1134	    if (sc->kbd != newkbd) {
1135		i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
1136				 (void *)&sc->keyboard, sckbdevent, sc);
1137		/* i == newkbd->kb_index */
1138		if (i >= 0) {
1139		    if (sc->kbd != NULL) {
1140			save_kbd_state(sc->cur_scp);
1141			kbd_release(sc->kbd, (void *)&sc->keyboard);
1142		    }
1143		    sc->kbd = kbd_get_keyboard(i); /* sc->kbd == newkbd */
1144		    sc->keyboard = i;
1145		    kbd_ioctl(sc->kbd, KDSKBMODE,
1146			      (caddr_t)&sc->cur_scp->kbd_mode);
1147		    update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1148				     LOCK_MASK);
1149		} else {
1150		    error = EPERM;	/* XXX */
1151		}
1152	    }
1153	    splx(s);
1154	    return error;
1155	}
1156
1157    case CONS_RELKBD: 		/* release the current keyboard */
1158	s = spltty();
1159	error = 0;
1160	if (sc->kbd != NULL) {
1161	    save_kbd_state(sc->cur_scp);
1162	    error = kbd_release(sc->kbd, (void *)&sc->keyboard);
1163	    if (error == 0) {
1164		sc->kbd = NULL;
1165		sc->keyboard = -1;
1166	    }
1167	}
1168	splx(s);
1169	return error;
1170
1171    case CONS_GETTERM:		/* get the current terminal emulator info */
1172	{
1173	    sc_term_sw_t *sw;
1174
1175	    if (((term_info_t *)data)->ti_index == 0) {
1176		sw = scp->tsw;
1177	    } else {
1178		sw = sc_term_match_by_number(((term_info_t *)data)->ti_index);
1179	    }
1180	    if (sw != NULL) {
1181		strncpy(((term_info_t *)data)->ti_name, sw->te_name,
1182			sizeof(((term_info_t *)data)->ti_name));
1183		strncpy(((term_info_t *)data)->ti_desc, sw->te_desc,
1184			sizeof(((term_info_t *)data)->ti_desc));
1185		((term_info_t *)data)->ti_flags = 0;
1186		return 0;
1187	    } else {
1188		((term_info_t *)data)->ti_name[0] = '\0';
1189		((term_info_t *)data)->ti_desc[0] = '\0';
1190		((term_info_t *)data)->ti_flags = 0;
1191		return EINVAL;
1192	    }
1193	}
1194
1195    case CONS_SETTERM:		/* set the current terminal emulator */
1196	s = spltty();
1197	error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
1198	/* FIXME: what if scp == sc_console! XXX */
1199	splx(s);
1200	return error;
1201
1202    case GIO_SCRNMAP:   	/* get output translation table */
1203	bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
1204	return 0;
1205
1206    case PIO_SCRNMAP:   	/* set output translation table */
1207	bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
1208	for (i=0; i<sizeof(sc->scr_map); i++) {
1209	    sc->scr_rmap[sc->scr_map[i]] = i;
1210	}
1211	return 0;
1212
1213    case GIO_KEYMAP:		/* get keyboard translation table */
1214    case PIO_KEYMAP:		/* set keyboard translation table */
1215    case GIO_DEADKEYMAP:	/* get accent key translation table */
1216    case PIO_DEADKEYMAP:	/* set accent key translation table */
1217    case GETFKEY:		/* get function key string */
1218    case SETFKEY:		/* set function key string */
1219	error = kbd_ioctl(sc->kbd, cmd, data);
1220	if (error == ENOIOCTL)
1221	    error = ENODEV;
1222	return error;
1223
1224#ifndef SC_NO_FONT_LOADING
1225
1226    case PIO_FONT8x8:   	/* set 8x8 dot font */
1227	if (!ISFONTAVAIL(sc->adp->va_flags))
1228	    return ENXIO;
1229	bcopy(data, sc->font_8, 8*256);
1230	sc->fonts_loaded |= FONT_8;
1231	/*
1232	 * FONT KLUDGE
1233	 * Always use the font page #0. XXX
1234	 * Don't load if the current font size is not 8x8.
1235	 */
1236	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
1237	    sc_load_font(sc->cur_scp, 0, 8, sc->font_8, 0, 256);
1238	return 0;
1239
1240    case GIO_FONT8x8:   	/* get 8x8 dot font */
1241	if (!ISFONTAVAIL(sc->adp->va_flags))
1242	    return ENXIO;
1243	if (sc->fonts_loaded & FONT_8) {
1244	    bcopy(sc->font_8, data, 8*256);
1245	    return 0;
1246	}
1247	else
1248	    return ENXIO;
1249
1250    case PIO_FONT8x14:  	/* set 8x14 dot font */
1251	if (!ISFONTAVAIL(sc->adp->va_flags))
1252	    return ENXIO;
1253	bcopy(data, sc->font_14, 14*256);
1254	sc->fonts_loaded |= FONT_14;
1255	/*
1256	 * FONT KLUDGE
1257	 * Always use the font page #0. XXX
1258	 * Don't load if the current font size is not 8x14.
1259	 */
1260	if (ISTEXTSC(sc->cur_scp)
1261	    && (sc->cur_scp->font_size >= 14)
1262	    && (sc->cur_scp->font_size < 16))
1263	    sc_load_font(sc->cur_scp, 0, 14, sc->font_14, 0, 256);
1264	return 0;
1265
1266    case GIO_FONT8x14:  	/* get 8x14 dot font */
1267	if (!ISFONTAVAIL(sc->adp->va_flags))
1268	    return ENXIO;
1269	if (sc->fonts_loaded & FONT_14) {
1270	    bcopy(sc->font_14, data, 14*256);
1271	    return 0;
1272	}
1273	else
1274	    return ENXIO;
1275
1276    case PIO_FONT8x16:  	/* set 8x16 dot font */
1277	if (!ISFONTAVAIL(sc->adp->va_flags))
1278	    return ENXIO;
1279	bcopy(data, sc->font_16, 16*256);
1280	sc->fonts_loaded |= FONT_16;
1281	/*
1282	 * FONT KLUDGE
1283	 * Always use the font page #0. XXX
1284	 * Don't load if the current font size is not 8x16.
1285	 */
1286	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
1287	    sc_load_font(sc->cur_scp, 0, 16, sc->font_16, 0, 256);
1288	return 0;
1289
1290    case GIO_FONT8x16:  	/* get 8x16 dot font */
1291	if (!ISFONTAVAIL(sc->adp->va_flags))
1292	    return ENXIO;
1293	if (sc->fonts_loaded & FONT_16) {
1294	    bcopy(sc->font_16, data, 16*256);
1295	    return 0;
1296	}
1297	else
1298	    return ENXIO;
1299
1300#endif /* SC_NO_FONT_LOADING */
1301
1302    default:
1303	break;
1304    }
1305
1306    error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
1307    if (error != ENOIOCTL)
1308	return(error);
1309    error = ttioctl(tp, cmd, data, flag);
1310    if (error != ENOIOCTL)
1311	return(error);
1312    return(ENOTTY);
1313}
1314
1315static void
1316scstart(struct tty *tp)
1317{
1318    struct clist *rbp;
1319    int s, len;
1320    u_char buf[PCBURST];
1321    scr_stat *scp = SC_STAT(tp->t_dev);
1322
1323    if (scp->status & SLKED || scp->sc->blink_in_progress)
1324	return;
1325    s = spltty();
1326    if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
1327	tp->t_state |= TS_BUSY;
1328	rbp = &tp->t_outq;
1329	while (rbp->c_cc) {
1330	    len = q_to_b(rbp, buf, PCBURST);
1331	    splx(s);
1332	    sc_puts(scp, buf, len);
1333	    s = spltty();
1334	}
1335	tp->t_state &= ~TS_BUSY;
1336	ttwwakeup(tp);
1337    }
1338    splx(s);
1339}
1340
1341static void
1342sccnprobe(struct consdev *cp)
1343{
1344#if __i386__
1345    int unit;
1346    int flags;
1347
1348    cp->cn_pri = sc_get_cons_priority(&unit, &flags);
1349
1350    /* a video card is always required */
1351    if (!scvidprobe(unit, flags, TRUE))
1352	cp->cn_pri = CN_DEAD;
1353
1354    /* syscons will become console even when there is no keyboard */
1355    sckbdprobe(unit, flags, TRUE);
1356
1357    if (cp->cn_pri == CN_DEAD)
1358	return;
1359
1360    /* initialize required fields */
1361    cp->cn_dev = makedev(CDEV_MAJOR, SC_CONSOLECTL);
1362#endif /* __i386__ */
1363
1364#if __alpha__
1365    /*
1366     * alpha use sccnattach() rather than cnprobe()/cninit()/cnterm()
1367     * interface to install the console.  Always return CN_DEAD from
1368     * here.
1369     */
1370    cp->cn_pri = CN_DEAD;
1371#endif /* __alpha__ */
1372}
1373
1374static void
1375sccninit(struct consdev *cp)
1376{
1377#if __i386__
1378    int unit;
1379    int flags;
1380
1381    sc_get_cons_priority(&unit, &flags);
1382    scinit(unit, flags | SC_KERNEL_CONSOLE);
1383    sc_console_unit = unit;
1384    sc_console = SC_STAT(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1385#endif /* __i386__ */
1386
1387#if __alpha__
1388    /* SHOULDN'T REACH HERE */
1389#endif /* __alpha__ */
1390}
1391
1392static void
1393sccnterm(struct consdev *cp)
1394{
1395    /* we are not the kernel console any more, release everything */
1396
1397    if (sc_console_unit < 0)
1398	return;			/* shouldn't happen */
1399
1400#if __i386__
1401#if 0 /* XXX */
1402    sc_clear_screen(sc_console);
1403    sccnupdate(sc_console);
1404#endif
1405    scterm(sc_console_unit, SC_KERNEL_CONSOLE);
1406    sc_console_unit = -1;
1407    sc_console = NULL;
1408#endif /* __i386__ */
1409
1410#if __alpha__
1411    /* do nothing XXX */
1412#endif /* __alpha__ */
1413}
1414
1415#ifdef __alpha__
1416
1417void
1418sccnattach(void)
1419{
1420    static struct consdev consdev;
1421    int unit;
1422    int flags;
1423
1424    bcopy(&sc_consdev, &consdev, sizeof(sc_consdev));
1425    consdev.cn_pri = sc_get_cons_priority(&unit, &flags);
1426
1427    /* a video card is always required */
1428    if (!scvidprobe(unit, flags, TRUE))
1429	consdev.cn_pri = CN_DEAD;
1430
1431    /* alpha doesn't allow the console being without a keyboard... Why? */
1432    if (!sckbdprobe(unit, flags, TRUE))
1433	consdev.cn_pri = CN_DEAD;
1434
1435    if (consdev.cn_pri == CN_DEAD)
1436	return;
1437
1438    scinit(unit, flags | SC_KERNEL_CONSOLE);
1439    sc_console_unit = unit;
1440    sc_console = SC_STAT(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1441    consdev.cn_dev = makedev(CDEV_MAJOR, 0);
1442    cn_tab = &consdev;
1443}
1444
1445#endif /* __alpha__ */
1446
1447static void
1448sccnputc(dev_t dev, int c)
1449{
1450    u_char buf[1];
1451    scr_stat *scp = sc_console;
1452    void *save;
1453#ifndef SC_NO_HISTORY
1454    struct tty *tp;
1455#endif /* !SC_NO_HISTORY */
1456    int s;
1457
1458    /* assert(sc_console != NULL) */
1459
1460#ifndef SC_NO_HISTORY
1461    if (scp == scp->sc->cur_scp && scp->status & SLKED) {
1462	scp->status &= ~SLKED;
1463	update_kbd_state(scp, scp->status, SLKED);
1464	if (scp->status & BUFFER_SAVED) {
1465	    if (!sc_hist_restore(scp))
1466		sc_remove_cutmarking(scp);
1467	    scp->status &= ~BUFFER_SAVED;
1468	    scp->status |= CURSOR_ENABLED;
1469	    sc_draw_cursor_image(scp);
1470	}
1471	tp = VIRTUAL_TTY(scp->sc, scp->index);
1472	if (tp->t_state & TS_ISOPEN)
1473	    scstart(tp);
1474    }
1475#endif /* !SC_NO_HISTORY */
1476
1477    save = scp->ts;
1478    if (kernel_console_ts != NULL)
1479	scp->ts = kernel_console_ts;
1480    buf[0] = c;
1481    sc_puts(scp, buf, 1);
1482    scp->ts = save;
1483
1484    s = spltty();	/* block sckbdevent and scrn_timer */
1485    sccnupdate(scp);
1486    splx(s);
1487}
1488
1489static int
1490sccngetc(dev_t dev)
1491{
1492    return sccngetch(0);
1493}
1494
1495static int
1496sccncheckc(dev_t dev)
1497{
1498    return sccngetch(SCGETC_NONBLOCK);
1499}
1500
1501static void
1502sccndbctl(dev_t dev, int on)
1503{
1504    /* assert(sc_console_unit >= 0) */
1505    /* try to switch to the kernel console screen */
1506    if (on && debugger == 0) {
1507	/*
1508	 * TRY to make sure the screen saver is stopped,
1509	 * and the screen is updated before switching to
1510	 * the vty0.
1511	 */
1512	scrn_timer(NULL);
1513	if (!cold
1514	    && sc_console->sc->cur_scp->smode.mode == VT_AUTO
1515	    && sc_console->smode.mode == VT_AUTO) {
1516	    sc_console->sc->cur_scp->status |= MOUSE_HIDDEN;
1517	    sc_switch_scr(sc_console->sc, sc_console->index);
1518	}
1519    }
1520    if (on)
1521	++debugger;
1522    else
1523	--debugger;
1524}
1525
1526static int
1527sccngetch(int flags)
1528{
1529    static struct fkeytab fkey;
1530    static int fkeycp;
1531    scr_stat *scp;
1532    u_char *p;
1533    int cur_mode;
1534    int s = spltty();	/* block sckbdevent and scrn_timer while we poll */
1535    int c;
1536
1537    /* assert(sc_console != NULL) */
1538
1539    /*
1540     * Stop the screen saver and update the screen if necessary.
1541     * What if we have been running in the screen saver code... XXX
1542     */
1543    sc_touch_scrn_saver();
1544    scp = sc_console->sc->cur_scp;	/* XXX */
1545    sccnupdate(scp);
1546
1547    if (fkeycp < fkey.len) {
1548	splx(s);
1549	return fkey.str[fkeycp++];
1550    }
1551
1552    if (scp->sc->kbd == NULL) {
1553	splx(s);
1554	return -1;
1555    }
1556
1557    /*
1558     * Make sure the keyboard is accessible even when the kbd device
1559     * driver is disabled.
1560     */
1561    kbd_enable(scp->sc->kbd);
1562
1563    /* we shall always use the keyboard in the XLATE mode here */
1564    cur_mode = scp->kbd_mode;
1565    scp->kbd_mode = K_XLATE;
1566    kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1567
1568    kbd_poll(scp->sc->kbd, TRUE);
1569    c = scgetc(scp->sc, SCGETC_CN | flags);
1570    kbd_poll(scp->sc->kbd, FALSE);
1571
1572    scp->kbd_mode = cur_mode;
1573    kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
1574    kbd_disable(scp->sc->kbd);
1575    splx(s);
1576
1577    switch (KEYFLAGS(c)) {
1578    case 0:	/* normal char */
1579	return KEYCHAR(c);
1580    case FKEY:	/* function key */
1581	p = kbd_get_fkeystr(scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
1582	fkey.len = fkeycp;
1583	if ((p != NULL) && (fkey.len > 0)) {
1584	    bcopy(p, fkey.str, fkey.len);
1585	    fkeycp = 1;
1586	    return fkey.str[0];
1587	}
1588	return c;	/* XXX */
1589    case NOKEY:
1590    case ERRKEY:
1591    default:
1592	return -1;
1593    }
1594    /* NOT REACHED */
1595}
1596
1597static void
1598sccnupdate(scr_stat *scp)
1599{
1600    /* this is a cut-down version of scrn_timer()... */
1601
1602    if (scp->sc->font_loading_in_progress || scp->sc->videoio_in_progress)
1603	return;
1604
1605    if (debugger > 0 || panicstr || shutdown_in_progress) {
1606	sc_touch_scrn_saver();
1607    } else if (scp != scp->sc->cur_scp) {
1608	return;
1609    }
1610
1611    if (!run_scrn_saver)
1612	scp->sc->flags &= ~SC_SCRN_IDLE;
1613#if NSPLASH > 0
1614    if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
1615	if (scp->sc->flags & SC_SCRN_BLANKED)
1616            stop_scrn_saver(scp->sc, current_saver);
1617#endif /* NSPLASH */
1618
1619    if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress
1620	|| scp->sc->switch_in_progress)
1621	return;
1622    /*
1623     * FIXME: unlike scrn_timer(), we call scrn_update() from here even
1624     * when write_in_progress is non-zero.  XXX
1625     */
1626
1627    if (!ISGRAPHSC(scp) && !(scp->status & SAVER_RUNNING))
1628	scrn_update(scp, TRUE);
1629}
1630
1631static void
1632scrn_timer(void *arg)
1633{
1634    static int kbd_interval = 0;
1635    struct timeval tv;
1636    sc_softc_t *sc;
1637    scr_stat *scp;
1638    int again;
1639    int s;
1640
1641    again = (arg != NULL);
1642    if (arg != NULL)
1643	sc = (sc_softc_t *)arg;
1644    else if (sc_console != NULL)
1645	sc = sc_console->sc;
1646    else
1647	return;
1648
1649    /* don't do anything when we are performing some I/O operations */
1650    if (sc->font_loading_in_progress || sc->videoio_in_progress) {
1651	if (again)
1652	    timeout(scrn_timer, sc, hz / 10);
1653	return;
1654    }
1655    s = spltty();
1656
1657    if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
1658	/* try to allocate a keyboard automatically */
1659	if (++kbd_interval >= 25) {
1660	    sc->keyboard = kbd_allocate("*", -1, (void *)&sc->keyboard,
1661					sckbdevent, sc);
1662	    if (sc->keyboard >= 0) {
1663		sc->kbd = kbd_get_keyboard(sc->keyboard);
1664		kbd_ioctl(sc->kbd, KDSKBMODE,
1665			  (caddr_t)&sc->cur_scp->kbd_mode);
1666		update_kbd_state(sc->cur_scp, sc->cur_scp->status,
1667				 LOCK_MASK);
1668	    }
1669	    kbd_interval = 0;
1670	}
1671    }
1672
1673    /* find the vty to update */
1674    scp = sc->cur_scp;
1675
1676    /* should we stop the screen saver? */
1677    getmicrouptime(&tv);
1678    if (debugger > 0 || panicstr || shutdown_in_progress)
1679	sc_touch_scrn_saver();
1680    if (run_scrn_saver) {
1681	if (tv.tv_sec > sc->scrn_time_stamp + scrn_blank_time)
1682	    sc->flags |= SC_SCRN_IDLE;
1683	else
1684	    sc->flags &= ~SC_SCRN_IDLE;
1685    } else {
1686	sc->scrn_time_stamp = tv.tv_sec;
1687	sc->flags &= ~SC_SCRN_IDLE;
1688	if (scrn_blank_time > 0)
1689	    run_scrn_saver = TRUE;
1690    }
1691#if NSPLASH > 0
1692    if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
1693	if (sc->flags & SC_SCRN_BLANKED)
1694            stop_scrn_saver(sc, current_saver);
1695#endif /* NSPLASH */
1696
1697    /* should we just return ? */
1698    if (sc->blink_in_progress || sc->switch_in_progress
1699	|| sc->write_in_progress) {
1700	if (again)
1701	    timeout(scrn_timer, sc, hz / 10);
1702	splx(s);
1703	return;
1704    }
1705
1706    /* Update the screen */
1707    scp = sc->cur_scp;		/* cur_scp may have changed... */
1708    if (!ISGRAPHSC(scp) && !(scp->status & SAVER_RUNNING))
1709	scrn_update(scp, TRUE);
1710
1711#if NSPLASH > 0
1712    /* should we activate the screen saver? */
1713    if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
1714	if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
1715	    (*current_saver)(sc, TRUE);
1716#endif /* NSPLASH */
1717
1718    if (again)
1719	timeout(scrn_timer, sc, hz / 25);
1720    splx(s);
1721}
1722
1723static int
1724and_region(int *s1, int *e1, int s2, int e2)
1725{
1726    if (*e1 < s2 || e2 < *s1)
1727	return FALSE;
1728    *s1 = imax(*s1, s2);
1729    *e1 = imin(*e1, e2);
1730    return TRUE;
1731}
1732
1733static void
1734scrn_update(scr_stat *scp, int show_cursor)
1735{
1736    int start;
1737    int end;
1738    int s;
1739    int e;
1740
1741    /* assert(scp == scp->sc->cur_scp) */
1742
1743    ++scp->sc->videoio_in_progress;
1744
1745#ifndef SC_NO_CUTPASTE
1746    /* remove the previous mouse pointer image if necessary */
1747    if (scp->status & MOUSE_VISIBLE) {
1748	s = scp->mouse_pos;
1749	e = scp->mouse_pos + scp->xsize + 1;
1750	if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN))
1751	    || and_region(&s, &e, scp->start, scp->end)
1752	    || ((scp->status & CURSOR_ENABLED) &&
1753		(scp->cursor_pos != scp->cursor_oldpos) &&
1754		(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos)
1755		 || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) {
1756	    sc_remove_mouse_image(scp);
1757	    if (scp->end >= scp->xsize*scp->ysize)
1758		scp->end = scp->xsize*scp->ysize - 1;
1759	}
1760    }
1761#endif /* !SC_NO_CUTPASTE */
1762
1763#if 1
1764    /* debug: XXX */
1765    if (scp->end >= scp->xsize*scp->ysize) {
1766	printf("scrn_update(): scp->end %d > size_of_screen!!\n", scp->end);
1767	scp->end = scp->xsize*scp->ysize - 1;
1768    }
1769    if (scp->start < 0) {
1770	printf("scrn_update(): scp->start %d < 0\n", scp->start);
1771	scp->start = 0;
1772    }
1773#endif
1774
1775    /* update screen image */
1776    if (scp->start <= scp->end)  {
1777	if (scp->mouse_cut_end >= 0) {
1778	    /* there is a marked region for cut & paste */
1779	    if (scp->mouse_cut_start <= scp->mouse_cut_end) {
1780		start = scp->mouse_cut_start;
1781		end = scp->mouse_cut_end;
1782	    } else {
1783		start = scp->mouse_cut_end;
1784		end = scp->mouse_cut_start - 1;
1785	    }
1786	    s = start;
1787	    e = end;
1788	    /* does the cut-mark region overlap with the update region? */
1789	    if (and_region(&s, &e, scp->start, scp->end)) {
1790		(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
1791		s = 0;
1792		e = start - 1;
1793		if (and_region(&s, &e, scp->start, scp->end))
1794		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1795		s = end + 1;
1796		e = scp->xsize*scp->ysize - 1;
1797		if (and_region(&s, &e, scp->start, scp->end))
1798		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
1799	    } else {
1800		(*scp->rndr->draw)(scp, scp->start,
1801				   scp->end - scp->start + 1, FALSE);
1802	    }
1803	} else {
1804	    (*scp->rndr->draw)(scp, scp->start,
1805			       scp->end - scp->start + 1, FALSE);
1806	}
1807    }
1808
1809    /* we are not to show the cursor and the mouse pointer... */
1810    if (!show_cursor) {
1811        scp->end = 0;
1812        scp->start = scp->xsize*scp->ysize - 1;
1813	--scp->sc->videoio_in_progress;
1814	return;
1815    }
1816
1817    /* update cursor image */
1818    if (scp->status & CURSOR_ENABLED) {
1819	s = scp->start;
1820	e = scp->end;
1821        /* did cursor move since last time ? */
1822        if (scp->cursor_pos != scp->cursor_oldpos) {
1823            /* do we need to remove old cursor image ? */
1824            if (!and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
1825                sc_remove_cursor_image(scp);
1826            sc_draw_cursor_image(scp);
1827        } else {
1828            if (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos))
1829		/* cursor didn't move, but has been overwritten */
1830		sc_draw_cursor_image(scp);
1831	    else if (scp->sc->flags & SC_BLINK_CURSOR)
1832		/* if it's a blinking cursor, update it */
1833		(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
1834					   sc_inside_cutmark(scp,
1835					       scp->cursor_pos));
1836        }
1837    }
1838
1839#ifndef SC_NO_CUTPASTE
1840    /* update "pseudo" mouse pointer image */
1841    if (scp->sc->flags & SC_MOUSE_ENABLED) {
1842	if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
1843	    scp->status &= ~MOUSE_MOVED;
1844	    sc_draw_mouse_image(scp);
1845	}
1846    }
1847#endif /* SC_NO_CUTPASTE */
1848
1849    scp->end = 0;
1850    scp->start = scp->xsize*scp->ysize - 1;
1851
1852    --scp->sc->videoio_in_progress;
1853}
1854
1855#if NSPLASH > 0
1856static int
1857scsplash_callback(int event, void *arg)
1858{
1859    sc_softc_t *sc;
1860    int error;
1861
1862    sc = (sc_softc_t *)arg;
1863
1864    switch (event) {
1865    case SPLASH_INIT:
1866	if (add_scrn_saver(scsplash_saver) == 0) {
1867	    sc->flags &= ~SC_SAVER_FAILED;
1868	    run_scrn_saver = TRUE;
1869	    if (cold && !(boothowto & (RB_VERBOSE | RB_CONFIG))) {
1870		scsplash_stick(TRUE);
1871		(*current_saver)(sc, TRUE);
1872	    }
1873	}
1874	return 0;
1875
1876    case SPLASH_TERM:
1877	if (current_saver == scsplash_saver) {
1878	    scsplash_stick(FALSE);
1879	    error = remove_scrn_saver(scsplash_saver);
1880	    if (error)
1881		return error;
1882	}
1883	return 0;
1884
1885    default:
1886	return EINVAL;
1887    }
1888}
1889
1890static void
1891scsplash_saver(sc_softc_t *sc, int show)
1892{
1893    static int busy = FALSE;
1894    scr_stat *scp;
1895
1896    if (busy)
1897	return;
1898    busy = TRUE;
1899
1900    scp = sc->cur_scp;
1901    if (show) {
1902	if (!(sc->flags & SC_SAVER_FAILED)) {
1903	    if (!(sc->flags & SC_SCRN_BLANKED))
1904		set_scrn_saver_mode(scp, -1, NULL, 0);
1905	    switch (splash(sc->adp, TRUE)) {
1906	    case 0:		/* succeeded */
1907		break;
1908	    case EAGAIN:	/* try later */
1909		restore_scrn_saver_mode(scp, FALSE);
1910		sc_touch_scrn_saver();		/* XXX */
1911		break;
1912	    default:
1913		sc->flags |= SC_SAVER_FAILED;
1914		scsplash_stick(FALSE);
1915		restore_scrn_saver_mode(scp, TRUE);
1916		printf("scsplash_saver(): failed to put up the image\n");
1917		break;
1918	    }
1919	}
1920    } else if (!sticky_splash) {
1921	if ((sc->flags & SC_SCRN_BLANKED) && (splash(sc->adp, FALSE) == 0))
1922	    restore_scrn_saver_mode(scp, TRUE);
1923    }
1924    busy = FALSE;
1925}
1926
1927static int
1928add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
1929{
1930#if 0
1931    int error;
1932
1933    if (current_saver != none_saver) {
1934	error = remove_scrn_saver(current_saver);
1935	if (error)
1936	    return error;
1937    }
1938#endif
1939    if (current_saver != none_saver)
1940	return EBUSY;
1941
1942    run_scrn_saver = FALSE;
1943    saver_mode = CONS_LKM_SAVER;
1944    current_saver = this_saver;
1945    return 0;
1946}
1947
1948static int
1949remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
1950{
1951    if (current_saver != this_saver)
1952	return EINVAL;
1953
1954#if 0
1955    /*
1956     * In order to prevent `current_saver' from being called by
1957     * the timeout routine `scrn_timer()' while we manipulate
1958     * the saver list, we shall set `current_saver' to `none_saver'
1959     * before stopping the current saver, rather than blocking by `splXX()'.
1960     */
1961    current_saver = none_saver;
1962    if (scrn_blanked)
1963        stop_scrn_saver(this_saver);
1964#endif
1965
1966    /* unblank all blanked screens */
1967    wait_scrn_saver_stop(NULL);
1968    if (scrn_blanked)
1969	return EBUSY;
1970
1971    current_saver = none_saver;
1972    return 0;
1973}
1974
1975static int
1976set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
1977{
1978    int s;
1979
1980    /* assert(scp == scp->sc->cur_scp) */
1981    s = spltty();
1982    if (!ISGRAPHSC(scp))
1983	sc_remove_cursor_image(scp);
1984    scp->splash_save_mode = scp->mode;
1985    scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
1986    scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
1987    scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
1988    scp->sc->flags |= SC_SCRN_BLANKED;
1989    ++scrn_blanked;
1990    splx(s);
1991    if (mode < 0)
1992	return 0;
1993    scp->mode = mode;
1994    if (set_mode(scp) == 0) {
1995	if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
1996	    scp->status |= GRAPHICS_MODE;
1997#ifndef SC_NO_PALETTE_LOADING
1998	if (pal != NULL)
1999	    load_palette(scp->sc->adp, pal);
2000#endif
2001	sc_set_border(scp, border);
2002	return 0;
2003    } else {
2004	s = spltty();
2005	scp->mode = scp->splash_save_mode;
2006	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2007	scp->status |= scp->splash_save_status;
2008	splx(s);
2009	return 1;
2010    }
2011}
2012
2013static int
2014restore_scrn_saver_mode(scr_stat *scp, int changemode)
2015{
2016    int mode;
2017    int status;
2018    int s;
2019
2020    /* assert(scp == scp->sc->cur_scp) */
2021    s = spltty();
2022    mode = scp->mode;
2023    status = scp->status;
2024    scp->mode = scp->splash_save_mode;
2025    scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2026    scp->status |= scp->splash_save_status;
2027    scp->sc->flags &= ~SC_SCRN_BLANKED;
2028    if (!changemode) {
2029	if (!ISGRAPHSC(scp))
2030	    sc_draw_cursor_image(scp);
2031	--scrn_blanked;
2032	splx(s);
2033	return 0;
2034    }
2035    if (set_mode(scp) == 0) {
2036#ifndef SC_NO_PALETTE_LOADING
2037	load_palette(scp->sc->adp, scp->sc->palette);
2038#endif
2039	--scrn_blanked;
2040	splx(s);
2041	return 0;
2042    } else {
2043	scp->mode = mode;
2044	scp->status = status;
2045	splx(s);
2046	return 1;
2047    }
2048}
2049
2050static void
2051stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
2052{
2053    (*saver)(sc, FALSE);
2054    run_scrn_saver = FALSE;
2055    /* the screen saver may have chosen not to stop after all... */
2056    if (sc->flags & SC_SCRN_BLANKED)
2057	return;
2058
2059    mark_all(sc->cur_scp);
2060    if (sc->delayed_next_scr)
2061	sc_switch_scr(sc, sc->delayed_next_scr - 1);
2062    wakeup((caddr_t)&scrn_blanked);
2063}
2064
2065static int
2066wait_scrn_saver_stop(sc_softc_t *sc)
2067{
2068    int error = 0;
2069
2070    while (scrn_blanked > 0) {
2071	run_scrn_saver = FALSE;
2072	if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
2073	    error = 0;
2074	    break;
2075	}
2076	error = tsleep((caddr_t)&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
2077	if ((error != 0) && (error != ERESTART))
2078	    break;
2079    }
2080    run_scrn_saver = FALSE;
2081    return error;
2082}
2083#endif /* NSPLASH */
2084
2085void
2086sc_touch_scrn_saver(void)
2087{
2088    scsplash_stick(FALSE);
2089    run_scrn_saver = FALSE;
2090}
2091
2092int
2093sc_switch_scr(sc_softc_t *sc, u_int next_scr)
2094{
2095    struct tty *tp;
2096    struct proc *p;
2097    int s;
2098
2099    DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
2100
2101    /* delay switch if the screen is blanked or being updated */
2102    if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress
2103	|| sc->blink_in_progress || sc->videoio_in_progress) {
2104	sc->delayed_next_scr = next_scr + 1;
2105	sc_touch_scrn_saver();
2106	DPRINTF(5, ("switch delayed\n"));
2107	return 0;
2108    }
2109
2110    s = spltty();
2111
2112    /* we are in the middle of the vty switching process... */
2113    if (sc->switch_in_progress
2114	&& (sc->cur_scp->smode.mode == VT_PROCESS)
2115	&& sc->cur_scp->proc) {
2116	p = pfind(sc->cur_scp->pid);
2117	if (sc->cur_scp->proc != p) {
2118	    if (p)
2119		PROC_UNLOCK(p);
2120	    /*
2121	     * The controlling process has died!!.  Do some clean up.
2122	     * NOTE:`cur_scp->proc' and `cur_scp->smode.mode'
2123	     * are not reset here yet; they will be cleared later.
2124	     */
2125	    DPRINTF(5, ("cur_scp controlling process %d died, ",
2126	       sc->cur_scp->pid));
2127	    if (sc->cur_scp->status & SWITCH_WAIT_REL) {
2128		/*
2129		 * Force the previous switch to finish, but return now
2130		 * with error.
2131		 */
2132		DPRINTF(5, ("reset WAIT_REL, "));
2133		sc->cur_scp->status &= ~SWITCH_WAIT_REL;
2134		s = do_switch_scr(sc, s);
2135		splx(s);
2136		DPRINTF(5, ("finishing previous switch\n"));
2137		return EINVAL;
2138	    } else if (sc->cur_scp->status & SWITCH_WAIT_ACQ) {
2139		/* let's assume screen switch has been completed. */
2140		DPRINTF(5, ("reset WAIT_ACQ, "));
2141		sc->cur_scp->status &= ~SWITCH_WAIT_ACQ;
2142		sc->switch_in_progress = 0;
2143	    } else {
2144		/*
2145	 	 * We are in between screen release and acquisition, and
2146		 * reached here via scgetc() or scrn_timer() which has
2147		 * interrupted exchange_scr(). Don't do anything stupid.
2148		 */
2149		DPRINTF(5, ("waiting nothing, "));
2150	    }
2151	} else {
2152	    if (p)
2153		PROC_UNLOCK(p);
2154	    /*
2155	     * The controlling process is alive, but not responding...
2156	     * It is either buggy or it may be just taking time.
2157	     * The following code is a gross kludge to cope with this
2158	     * problem for which there is no clean solution. XXX
2159	     */
2160	    if (sc->cur_scp->status & SWITCH_WAIT_REL) {
2161		switch (sc->switch_in_progress++) {
2162		case 1:
2163		    break;
2164		case 2:
2165		    DPRINTF(5, ("sending relsig again, "));
2166		    signal_vt_rel(sc->cur_scp);
2167		    break;
2168		case 3:
2169		    break;
2170		case 4:
2171		default:
2172		    /*
2173		     * Act as if the controlling program returned
2174		     * VT_FALSE.
2175		     */
2176		    DPRINTF(5, ("force reset WAIT_REL, "));
2177		    sc->cur_scp->status &= ~SWITCH_WAIT_REL;
2178		    sc->switch_in_progress = 0;
2179		    splx(s);
2180		    DPRINTF(5, ("act as if VT_FALSE was seen\n"));
2181		    return EINVAL;
2182		}
2183	    } else if (sc->cur_scp->status & SWITCH_WAIT_ACQ) {
2184		switch (sc->switch_in_progress++) {
2185		case 1:
2186		    break;
2187		case 2:
2188		    DPRINTF(5, ("sending acqsig again, "));
2189		    signal_vt_acq(sc->cur_scp);
2190		    break;
2191		case 3:
2192		    break;
2193		case 4:
2194		default:
2195		     /* clear the flag and finish the previous switch */
2196		    DPRINTF(5, ("force reset WAIT_ACQ, "));
2197		    sc->cur_scp->status &= ~SWITCH_WAIT_ACQ;
2198		    sc->switch_in_progress = 0;
2199		    break;
2200		}
2201	    }
2202	}
2203    }
2204
2205    /*
2206     * Return error if an invalid argument is given, or vty switch
2207     * is still in progress.
2208     */
2209    if ((next_scr < sc->first_vty) || (next_scr >= sc->first_vty + sc->vtys)
2210	|| sc->switch_in_progress) {
2211	splx(s);
2212	sc_bell(sc->cur_scp, bios_value.bell_pitch, BELL_DURATION);
2213	DPRINTF(5, ("error 1\n"));
2214	return EINVAL;
2215    }
2216
2217    /*
2218     * Don't allow switching away from the graphics mode vty
2219     * if the switch mode is VT_AUTO, unless the next vty is the same
2220     * as the current or the current vty has been closed (but showing).
2221     */
2222    tp = VIRTUAL_TTY(sc, sc->cur_scp->index);
2223    if ((sc->cur_scp->index != next_scr)
2224	&& (tp->t_state & TS_ISOPEN)
2225	&& (sc->cur_scp->smode.mode == VT_AUTO)
2226	&& ISGRAPHSC(sc->cur_scp)) {
2227	splx(s);
2228	sc_bell(sc->cur_scp, bios_value.bell_pitch, BELL_DURATION);
2229	DPRINTF(5, ("error, graphics mode\n"));
2230	return EINVAL;
2231    }
2232
2233    /*
2234     * Is the wanted vty open? Don't allow switching to a closed vty.
2235     * Note that we always allow the user to switch to the kernel
2236     * console even if it is closed.
2237     */
2238    if ((sc_console == NULL) || (next_scr != sc_console->index)) {
2239	tp = VIRTUAL_TTY(sc, next_scr);
2240	if ((tp == NULL) || !(tp->t_state & TS_ISOPEN)) {
2241	    splx(s);
2242	    sc_bell(sc->cur_scp, bios_value.bell_pitch, BELL_DURATION);
2243	    DPRINTF(5, ("error 2, requested vty isn't open!\n"));
2244	    return EINVAL;
2245	}
2246    }
2247
2248    /* this is the start of vty switching process... */
2249    ++sc->switch_in_progress;
2250    sc->delayed_next_scr = 0;
2251    sc->old_scp = sc->cur_scp;
2252    sc->new_scp = SC_STAT(SC_DEV(sc, next_scr));
2253    if (sc->new_scp == sc->old_scp) {
2254	sc->switch_in_progress = 0;
2255	wakeup((caddr_t)&sc->new_scp->smode);
2256	splx(s);
2257	DPRINTF(5, ("switch done (new == old)\n"));
2258	return 0;
2259    }
2260
2261    /* has controlling process died? */
2262    vt_proc_alive(sc->old_scp);
2263    vt_proc_alive(sc->new_scp);
2264
2265    /* wait for the controlling process to release the screen, if necessary */
2266    if (signal_vt_rel(sc->old_scp)) {
2267	splx(s);
2268	return 0;
2269    }
2270
2271    /* go set up the new vty screen */
2272    splx(s);
2273    exchange_scr(sc);
2274    s = spltty();
2275
2276    /* wake up processes waiting for this vty */
2277    wakeup((caddr_t)&sc->cur_scp->smode);
2278
2279    /* wait for the controlling process to acknowledge, if necessary */
2280    if (signal_vt_acq(sc->cur_scp)) {
2281	splx(s);
2282	return 0;
2283    }
2284
2285    sc->switch_in_progress = 0;
2286    if (sc->unit == sc_console_unit)
2287	cons_unavail = FALSE;
2288    splx(s);
2289    DPRINTF(5, ("switch done\n"));
2290
2291    return 0;
2292}
2293
2294static int
2295do_switch_scr(sc_softc_t *sc, int s)
2296{
2297    vt_proc_alive(sc->new_scp);
2298
2299    splx(s);
2300    exchange_scr(sc);
2301    s = spltty();
2302    /* sc->cur_scp == sc->new_scp */
2303    wakeup((caddr_t)&sc->cur_scp->smode);
2304
2305    /* wait for the controlling process to acknowledge, if necessary */
2306    if (!signal_vt_acq(sc->cur_scp)) {
2307	sc->switch_in_progress = 0;
2308	if (sc->unit == sc_console_unit)
2309	    cons_unavail = FALSE;
2310    }
2311
2312    return s;
2313}
2314
2315static int
2316vt_proc_alive(scr_stat *scp)
2317{
2318    struct proc *p;
2319
2320    if (scp->proc) {
2321	if ((p = pfind(scp->pid)) != NULL)
2322	    PROC_UNLOCK(p);
2323	if (scp->proc == p)
2324	    return TRUE;
2325	scp->proc = NULL;
2326	scp->smode.mode = VT_AUTO;
2327	DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
2328    }
2329    return FALSE;
2330}
2331
2332static int
2333signal_vt_rel(scr_stat *scp)
2334{
2335    if (scp->smode.mode != VT_PROCESS)
2336	return FALSE;
2337    scp->status |= SWITCH_WAIT_REL;
2338    PROC_LOCK(scp->proc);
2339    psignal(scp->proc, scp->smode.relsig);
2340    PROC_UNLOCK(scp->proc);
2341    DPRINTF(5, ("sending relsig to %d\n", scp->pid));
2342    return TRUE;
2343}
2344
2345static int
2346signal_vt_acq(scr_stat *scp)
2347{
2348    if (scp->smode.mode != VT_PROCESS)
2349	return FALSE;
2350    if (scp->sc->unit == sc_console_unit)
2351	cons_unavail = TRUE;
2352    scp->status |= SWITCH_WAIT_ACQ;
2353    PROC_LOCK(scp->proc);
2354    psignal(scp->proc, scp->smode.acqsig);
2355    PROC_UNLOCK(scp->proc);
2356    DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
2357    return TRUE;
2358}
2359
2360static void
2361exchange_scr(sc_softc_t *sc)
2362{
2363    scr_stat *scp;
2364
2365    /* save the current state of video and keyboard */
2366    sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
2367    if (!ISGRAPHSC(sc->old_scp))
2368	sc_remove_cursor_image(sc->old_scp);
2369    if (sc->old_scp->kbd_mode == K_XLATE)
2370	save_kbd_state(sc->old_scp);
2371
2372    /* set up the video for the new screen */
2373    scp = sc->cur_scp = sc->new_scp;
2374    if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
2375	set_mode(scp);
2376    else
2377	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2378		    (void *)sc->adp->va_window, FALSE);
2379    scp->status |= MOUSE_HIDDEN;
2380    sc_move_cursor(scp, scp->xpos, scp->ypos);
2381    if (!ISGRAPHSC(scp))
2382	sc_set_cursor_image(scp);
2383#ifndef SC_NO_PALETTE_LOADING
2384    if (ISGRAPHSC(sc->old_scp))
2385	load_palette(sc->adp, sc->palette);
2386#endif
2387    sc_set_border(scp, scp->border);
2388
2389    /* set up the keyboard for the new screen */
2390    if (sc->old_scp->kbd_mode != scp->kbd_mode)
2391	kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
2392    update_kbd_state(scp, scp->status, LOCK_MASK);
2393
2394    mark_all(scp);
2395}
2396
2397void
2398sc_puts(scr_stat *scp, u_char *buf, int len)
2399{
2400#if NSPLASH > 0
2401    /* make screensaver happy */
2402    if (!sticky_splash && scp == scp->sc->cur_scp)
2403	run_scrn_saver = FALSE;
2404#endif
2405
2406    if (scp->tsw)
2407	(*scp->tsw->te_puts)(scp, buf, len);
2408
2409    if (scp->sc->delayed_next_scr)
2410	sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
2411}
2412
2413void
2414sc_draw_cursor_image(scr_stat *scp)
2415{
2416    /* assert(scp == scp->sc->cur_scp); */
2417    ++scp->sc->videoio_in_progress;
2418    (*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
2419			      scp->sc->flags & SC_BLINK_CURSOR, TRUE,
2420			      sc_inside_cutmark(scp, scp->cursor_pos));
2421    scp->cursor_oldpos = scp->cursor_pos;
2422    --scp->sc->videoio_in_progress;
2423}
2424
2425void
2426sc_remove_cursor_image(scr_stat *scp)
2427{
2428    /* assert(scp == scp->sc->cur_scp); */
2429    ++scp->sc->videoio_in_progress;
2430    (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
2431			      scp->sc->flags & SC_BLINK_CURSOR, FALSE,
2432			      sc_inside_cutmark(scp, scp->cursor_oldpos));
2433    --scp->sc->videoio_in_progress;
2434}
2435
2436static void
2437update_cursor_image(scr_stat *scp)
2438{
2439    int blink;
2440
2441    if (scp->sc->flags & SC_CHAR_CURSOR) {
2442	scp->cursor_base = imax(0, scp->sc->cursor_base);
2443	scp->cursor_height = imin(scp->sc->cursor_height, scp->font_size);
2444    } else {
2445	scp->cursor_base = 0;
2446	scp->cursor_height = scp->font_size;
2447    }
2448    blink = scp->sc->flags & SC_BLINK_CURSOR;
2449
2450    /* assert(scp == scp->sc->cur_scp); */
2451    ++scp->sc->videoio_in_progress;
2452    (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos, blink, FALSE,
2453			      sc_inside_cutmark(scp, scp->cursor_pos));
2454    (*scp->rndr->set_cursor)(scp, scp->cursor_base, scp->cursor_height, blink);
2455    (*scp->rndr->draw_cursor)(scp, scp->cursor_pos, blink, TRUE,
2456			      sc_inside_cutmark(scp, scp->cursor_pos));
2457    --scp->sc->videoio_in_progress;
2458}
2459
2460void
2461sc_set_cursor_image(scr_stat *scp)
2462{
2463    if (scp->sc->flags & SC_CHAR_CURSOR) {
2464	scp->cursor_base = imax(0, scp->sc->cursor_base);
2465	scp->cursor_height = imin(scp->sc->cursor_height, scp->font_size);
2466    } else {
2467	scp->cursor_base = 0;
2468	scp->cursor_height = scp->font_size;
2469    }
2470
2471    /* assert(scp == scp->sc->cur_scp); */
2472    ++scp->sc->videoio_in_progress;
2473    (*scp->rndr->set_cursor)(scp, scp->cursor_base, scp->cursor_height,
2474			     scp->sc->flags & SC_BLINK_CURSOR);
2475    --scp->sc->videoio_in_progress;
2476}
2477
2478static void
2479scinit(int unit, int flags)
2480{
2481    /*
2482     * When syscons is being initialized as the kernel console, malloc()
2483     * is not yet functional, because various kernel structures has not been
2484     * fully initialized yet.  Therefore, we need to declare the following
2485     * static buffers for the console.  This is less than ideal,
2486     * but is necessry evil for the time being.  XXX
2487     */
2488    static scr_stat main_console;
2489    static dev_t main_devs[MAXCONS];
2490    static struct tty main_tty;
2491    static u_short sc_buffer[ROW*COL];	/* XXX */
2492#ifndef SC_NO_FONT_LOADING
2493    static u_char font_8[256*8];
2494    static u_char font_14[256*14];
2495    static u_char font_16[256*16];
2496#endif
2497
2498    sc_softc_t *sc;
2499    scr_stat *scp;
2500    video_adapter_t *adp;
2501    int col;
2502    int row;
2503    int i;
2504
2505    /* one time initialization */
2506    if (init_done == COLD)
2507	sc_get_bios_values(&bios_value);
2508    init_done = WARM;
2509
2510    /*
2511     * Allocate resources.  Even if we are being called for the second
2512     * time, we must allocate them again, because they might have
2513     * disappeared...
2514     */
2515    sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2516    adp = NULL;
2517    if (sc->adapter >= 0) {
2518	vid_release(sc->adp, (void *)&sc->adapter);
2519	adp = sc->adp;
2520	sc->adp = NULL;
2521    }
2522    if (sc->keyboard >= 0) {
2523	DPRINTF(5, ("sc%d: releasing kbd%d\n", unit, sc->keyboard));
2524	i = kbd_release(sc->kbd, (void *)&sc->keyboard);
2525	DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
2526	if (sc->kbd != NULL) {
2527	    DPRINTF(5, ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
2528		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2529	}
2530	sc->kbd = NULL;
2531    }
2532    sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
2533    sc->adp = vid_get_adapter(sc->adapter);
2534    /* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
2535    sc->keyboard = kbd_allocate("*", unit, (void *)&sc->keyboard,
2536				sckbdevent, sc);
2537    DPRINTF(1, ("sc%d: keyboard %d\n", unit, sc->keyboard));
2538    sc->kbd = kbd_get_keyboard(sc->keyboard);
2539    if (sc->kbd != NULL) {
2540	DPRINTF(1, ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n",
2541		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
2542    }
2543
2544    if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
2545
2546	sc->initial_mode = sc->adp->va_initial_mode;
2547
2548#ifndef SC_NO_FONT_LOADING
2549	if (flags & SC_KERNEL_CONSOLE) {
2550	    sc->font_8 = font_8;
2551	    sc->font_14 = font_14;
2552	    sc->font_16 = font_16;
2553	} else if (sc->font_8 == NULL) {
2554	    /* assert(sc_malloc) */
2555	    sc->font_8 = malloc(sizeof(font_8), M_DEVBUF, M_WAITOK);
2556	    sc->font_14 = malloc(sizeof(font_14), M_DEVBUF, M_WAITOK);
2557	    sc->font_16 = malloc(sizeof(font_16), M_DEVBUF, M_WAITOK);
2558	}
2559#endif
2560
2561	/* extract the hardware cursor location and hide the cursor for now */
2562	(*vidsw[sc->adapter]->read_hw_cursor)(sc->adp, &col, &row);
2563	(*vidsw[sc->adapter]->set_hw_cursor)(sc->adp, -1, -1);
2564
2565	/* set up the first console */
2566	sc->first_vty = unit*MAXCONS;
2567	sc->vtys = MAXCONS;		/* XXX: should be configurable */
2568	if (flags & SC_KERNEL_CONSOLE) {
2569	    sc->dev = main_devs;
2570	    sc->dev[0] = makedev(CDEV_MAJOR, unit*MAXCONS);
2571	    sc->dev[0]->si_tty = &main_tty;
2572	    ttyregister(&main_tty);
2573	    scp = &main_console;
2574	    init_scp(sc, sc->first_vty, scp);
2575	    sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize, scp->ysize,
2576			(void *)sc_buffer, FALSE);
2577	    if (sc_init_emulator(scp, SC_DFLT_TERM))
2578		sc_init_emulator(scp, "*");
2579	    (*scp->tsw->te_default_attr)(scp,
2580					 kernel_default.std_color,
2581					 kernel_default.rev_color);
2582	} else {
2583	    /* assert(sc_malloc) */
2584	    sc->dev = malloc(sizeof(dev_t)*sc->vtys, M_DEVBUF, M_WAITOK|M_ZERO);
2585	    sc->dev[0] = makedev(CDEV_MAJOR, unit*MAXCONS);
2586	    sc->dev[0]->si_tty = ttymalloc(sc->dev[0]->si_tty);
2587	    scp = alloc_scp(sc, sc->first_vty);
2588	}
2589	SC_STAT(sc->dev[0]) = scp;
2590	sc->cur_scp = scp;
2591
2592	/* copy screen to temporary buffer */
2593	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
2594		    (void *)scp->sc->adp->va_window, FALSE);
2595	if (ISTEXTSC(scp))
2596	    sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0, scp->xsize*scp->ysize);
2597
2598	/* move cursors to the initial positions */
2599	if (col >= scp->xsize)
2600	    col = 0;
2601	if (row >= scp->ysize)
2602	    row = scp->ysize - 1;
2603	scp->xpos = col;
2604	scp->ypos = row;
2605	scp->cursor_pos = scp->cursor_oldpos = row*scp->xsize + col;
2606	if (bios_value.cursor_end < scp->font_size)
2607	    sc->cursor_base = scp->font_size - bios_value.cursor_end - 1;
2608	else
2609	    sc->cursor_base = 0;
2610	i = bios_value.cursor_end - bios_value.cursor_start + 1;
2611	sc->cursor_height = imin(i, scp->font_size);
2612#ifndef SC_NO_SYSMOUSE
2613	sc_mouse_move(scp, scp->xpixel/2, scp->ypixel/2);
2614#endif
2615	if (!ISGRAPHSC(scp)) {
2616    	    sc_set_cursor_image(scp);
2617    	    sc_draw_cursor_image(scp);
2618	}
2619
2620	/* save font and palette */
2621#ifndef SC_NO_FONT_LOADING
2622	sc->fonts_loaded = 0;
2623	if (ISFONTAVAIL(sc->adp->va_flags)) {
2624#ifdef SC_DFLT_FONT
2625	    bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
2626	    bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
2627	    bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
2628	    sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
2629	    if (scp->font_size < 14) {
2630		sc_load_font(scp, 0, 8, sc->font_8, 0, 256);
2631	    } else if (scp->font_size >= 16) {
2632		sc_load_font(scp, 0, 16, sc->font_16, 0, 256);
2633	    } else {
2634		sc_load_font(scp, 0, 14, sc->font_14, 0, 256);
2635	    }
2636#else /* !SC_DFLT_FONT */
2637	    if (scp->font_size < 14) {
2638		sc_save_font(scp, 0, 8, sc->font_8, 0, 256);
2639		sc->fonts_loaded = FONT_8;
2640	    } else if (scp->font_size >= 16) {
2641		sc_save_font(scp, 0, 16, sc->font_16, 0, 256);
2642		sc->fonts_loaded = FONT_16;
2643	    } else {
2644		sc_save_font(scp, 0, 14, sc->font_14, 0, 256);
2645		sc->fonts_loaded = FONT_14;
2646	    }
2647#endif /* SC_DFLT_FONT */
2648	    /* FONT KLUDGE: always use the font page #0. XXX */
2649	    sc_show_font(scp, 0);
2650	}
2651#endif /* !SC_NO_FONT_LOADING */
2652
2653#ifndef SC_NO_PALETTE_LOADING
2654	save_palette(sc->adp, sc->palette);
2655#endif
2656
2657#if NSPLASH > 0
2658	if (!(sc->flags & SC_SPLASH_SCRN) && (flags & SC_KERNEL_CONSOLE)) {
2659	    /* we are ready to put up the splash image! */
2660	    splash_init(sc->adp, scsplash_callback, sc);
2661	    sc->flags |= SC_SPLASH_SCRN;
2662	}
2663#endif /* NSPLASH */
2664    }
2665
2666    /* the rest is not necessary, if we have done it once */
2667    if (sc->flags & SC_INIT_DONE)
2668	return;
2669
2670    /* initialize mapscrn arrays to a one to one map */
2671    for (i = 0; i < sizeof(sc->scr_map); i++)
2672	sc->scr_map[i] = sc->scr_rmap[i] = i;
2673
2674    sc->flags |= SC_INIT_DONE;
2675}
2676
2677#if __i386__
2678static void
2679scterm(int unit, int flags)
2680{
2681    sc_softc_t *sc;
2682    scr_stat *scp;
2683
2684    sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
2685    if (sc == NULL)
2686	return;			/* shouldn't happen */
2687
2688#if NSPLASH > 0
2689    /* this console is no longer available for the splash screen */
2690    if (sc->flags & SC_SPLASH_SCRN) {
2691	splash_term(sc->adp);
2692	sc->flags &= ~SC_SPLASH_SCRN;
2693    }
2694#endif /* NSPLASH */
2695
2696#if 0 /* XXX */
2697    /* move the hardware cursor to the upper-left corner */
2698    (*vidsw[sc->adapter]->set_hw_cursor)(sc->adp, 0, 0);
2699#endif
2700
2701    /* release the keyboard and the video card */
2702    if (sc->keyboard >= 0)
2703	kbd_release(sc->kbd, &sc->keyboard);
2704    if (sc->adapter >= 0)
2705	vid_release(sc->adp, &sc->adapter);
2706
2707    /* stop the terminal emulator, if any */
2708    scp = SC_STAT(sc->dev[0]);
2709    if (scp->tsw)
2710	(*scp->tsw->te_term)(scp, &scp->ts);
2711    if (scp->ts != NULL)
2712	free(scp->ts, M_DEVBUF);
2713
2714    /* clear the structure */
2715    if (!(flags & SC_KERNEL_CONSOLE)) {
2716	/* XXX: We need delete_dev() for this */
2717	free(sc->dev, M_DEVBUF);
2718#if 0
2719	/* XXX: We need a ttyunregister for this */
2720	free(sc->tty, M_DEVBUF);
2721#endif
2722#ifndef SC_NO_FONT_LOADING
2723	free(sc->font_8, M_DEVBUF);
2724	free(sc->font_14, M_DEVBUF);
2725	free(sc->font_16, M_DEVBUF);
2726#endif
2727	/* XXX vtb, history */
2728    }
2729    bzero(sc, sizeof(*sc));
2730    sc->keyboard = -1;
2731    sc->adapter = -1;
2732}
2733#endif
2734
2735static void
2736scshutdown(void *arg, int howto)
2737{
2738    /* assert(sc_console != NULL) */
2739
2740    sc_touch_scrn_saver();
2741    if (!cold && sc_console
2742	&& sc_console->sc->cur_scp->smode.mode == VT_AUTO
2743	&& sc_console->smode.mode == VT_AUTO)
2744	sc_switch_scr(sc_console->sc, sc_console->index);
2745    shutdown_in_progress = TRUE;
2746}
2747
2748int
2749sc_clean_up(scr_stat *scp)
2750{
2751#if NSPLASH > 0
2752    int error;
2753#endif /* NSPLASH */
2754
2755    sc_touch_scrn_saver();
2756#if NSPLASH > 0
2757    if ((error = wait_scrn_saver_stop(scp->sc)))
2758	return error;
2759#endif /* NSPLASH */
2760    scp->status |= MOUSE_HIDDEN;
2761    sc_remove_mouse_image(scp);
2762    sc_remove_cutmarking(scp);
2763    return 0;
2764}
2765
2766void
2767sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
2768{
2769    sc_vtb_t new;
2770    sc_vtb_t old;
2771
2772    old = scp->vtb;
2773    sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
2774    if (!discard && (old.vtb_flags & VTB_VALID)) {
2775	/* retain the current cursor position and buffer contants */
2776	scp->cursor_oldpos = scp->cursor_pos;
2777	/*
2778	 * This works only if the old buffer has the same size as or larger
2779	 * than the new one. XXX
2780	 */
2781	sc_vtb_copy(&old, 0, &new, 0, scp->xsize*scp->ysize);
2782	scp->vtb = new;
2783    } else {
2784	scp->vtb = new;
2785	sc_vtb_destroy(&old);
2786    }
2787
2788#ifndef SC_NO_SYSMOUSE
2789    /* move the mouse cursor at the center of the screen */
2790    sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
2791#endif
2792}
2793
2794static scr_stat
2795*alloc_scp(sc_softc_t *sc, int vty)
2796{
2797    scr_stat *scp;
2798
2799    /* assert(sc_malloc) */
2800
2801    scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
2802    init_scp(sc, vty, scp);
2803
2804    sc_alloc_scr_buffer(scp, TRUE, TRUE);
2805    if (sc_init_emulator(scp, SC_DFLT_TERM))
2806	sc_init_emulator(scp, "*");
2807
2808#ifndef SC_NO_CUTPASTE
2809    if (ISMOUSEAVAIL(sc->adp->va_flags))
2810	sc_alloc_cut_buffer(scp, TRUE);
2811#endif
2812
2813#ifndef SC_NO_HISTORY
2814    sc_alloc_history_buffer(scp, 0, 0, TRUE);
2815#endif
2816
2817    return scp;
2818}
2819
2820static void
2821init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
2822{
2823    video_info_t info;
2824
2825    bzero(scp, sizeof(*scp));
2826
2827    scp->index = vty;
2828    scp->sc = sc;
2829    scp->status = 0;
2830    scp->mode = sc->initial_mode;
2831    (*vidsw[sc->adapter]->get_info)(sc->adp, scp->mode, &info);
2832    if (info.vi_flags & V_INFO_GRAPHICS) {
2833	scp->status |= GRAPHICS_MODE;
2834	scp->xpixel = info.vi_width;
2835	scp->ypixel = info.vi_height;
2836	scp->xsize = info.vi_width/8;
2837	scp->ysize = info.vi_height/info.vi_cheight;
2838	scp->font_size = 0;
2839	scp->font = NULL;
2840    } else {
2841	scp->xsize = info.vi_width;
2842	scp->ysize = info.vi_height;
2843	scp->xpixel = scp->xsize*8;
2844	scp->ypixel = scp->ysize*info.vi_cheight;
2845	if (info.vi_cheight < 14) {
2846	    scp->font_size = 8;
2847#ifndef SC_NO_FONT_LOADING
2848	    scp->font = sc->font_8;
2849#else
2850	    scp->font = NULL;
2851#endif
2852	} else if (info.vi_cheight >= 16) {
2853	    scp->font_size = 16;
2854#ifndef SC_NO_FONT_LOADING
2855	    scp->font = sc->font_16;
2856#else
2857	    scp->font = NULL;
2858#endif
2859	} else {
2860	    scp->font_size = 14;
2861#ifndef SC_NO_FONT_LOADING
2862	    scp->font = sc->font_14;
2863#else
2864	    scp->font = NULL;
2865#endif
2866	}
2867    }
2868    sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
2869    sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
2870    scp->xoff = scp->yoff = 0;
2871    scp->xpos = scp->ypos = 0;
2872    scp->start = scp->xsize * scp->ysize - 1;
2873    scp->end = 0;
2874    scp->tsw = NULL;
2875    scp->ts = NULL;
2876    scp->rndr = NULL;
2877    scp->border = BG_BLACK;
2878    scp->cursor_base = sc->cursor_base;
2879    scp->cursor_height = imin(sc->cursor_height, scp->font_size);
2880    scp->mouse_cut_start = scp->xsize*scp->ysize;
2881    scp->mouse_cut_end = -1;
2882    scp->mouse_signal = 0;
2883    scp->mouse_pid = 0;
2884    scp->mouse_proc = NULL;
2885    scp->kbd_mode = K_XLATE;
2886    scp->bell_pitch = bios_value.bell_pitch;
2887    scp->bell_duration = BELL_DURATION;
2888    scp->status |= (bios_value.shift_state & NLKED);
2889    scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
2890    scp->pid = 0;
2891    scp->proc = NULL;
2892    scp->smode.mode = VT_AUTO;
2893    scp->history = NULL;
2894    scp->history_pos = 0;
2895    scp->history_size = 0;
2896}
2897
2898int
2899sc_init_emulator(scr_stat *scp, char *name)
2900{
2901    sc_term_sw_t *sw;
2902    sc_rndr_sw_t *rndr;
2903    void *p;
2904    int error;
2905
2906    if (name == NULL)	/* if no name is given, use the current emulator */
2907	sw = scp->tsw;
2908    else		/* ...otherwise find the named emulator */
2909	sw = sc_term_match(name);
2910    if (sw == NULL)
2911	return EINVAL;
2912
2913    rndr = NULL;
2914    if (strcmp(sw->te_renderer, "*") != 0) {
2915	rndr = sc_render_match(scp, sw->te_renderer,
2916			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
2917    }
2918    if (rndr == NULL) {
2919	rndr = sc_render_match(scp, scp->sc->adp->va_name,
2920			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
2921	if (rndr == NULL)
2922	    return ENODEV;
2923    }
2924
2925    if (sw == scp->tsw) {
2926	error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
2927	scp->rndr = rndr;
2928	sc_clear_screen(scp);
2929	/* assert(error == 0); */
2930	return error;
2931    }
2932
2933    if (sc_malloc && (sw->te_size > 0))
2934	p = malloc(sw->te_size, M_DEVBUF, M_NOWAIT);
2935    else
2936	p = NULL;
2937    error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
2938    if (error)
2939	return error;
2940
2941    if (scp->tsw)
2942	(*scp->tsw->te_term)(scp, &scp->ts);
2943    if (scp->ts != NULL)
2944	free(scp->ts, M_DEVBUF);
2945    scp->tsw = sw;
2946    scp->ts = p;
2947    scp->rndr = rndr;
2948
2949    /* XXX */
2950    (*sw->te_default_attr)(scp, user_default.std_color, user_default.rev_color);
2951    sc_clear_screen(scp);
2952
2953    return 0;
2954}
2955
2956/*
2957 * scgetc(flags) - get character from keyboard.
2958 * If flags & SCGETC_CN, then avoid harmful side effects.
2959 * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
2960 * return NOKEY if there is nothing there.
2961 */
2962static u_int
2963scgetc(sc_softc_t *sc, u_int flags)
2964{
2965    scr_stat *scp;
2966#ifndef SC_NO_HISTORY
2967    struct tty *tp;
2968#endif
2969    u_int c;
2970    int this_scr;
2971    int f;
2972    int i;
2973
2974    if (sc->kbd == NULL)
2975	return NOKEY;
2976
2977next_code:
2978#if 1
2979    /* I don't like this, but... XXX */
2980    if (flags & SCGETC_CN)
2981	sccnupdate(sc->cur_scp);
2982#endif
2983    scp = sc->cur_scp;
2984    /* first see if there is something in the keyboard port */
2985    for (;;) {
2986	c = kbd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
2987	if (c == ERRKEY) {
2988	    if (!(flags & SCGETC_CN))
2989		sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
2990	} else if (c == NOKEY)
2991	    return c;
2992	else
2993	    break;
2994    }
2995
2996    /* make screensaver happy */
2997    if (!(c & RELKEY))
2998	sc_touch_scrn_saver();
2999
3000    if (!(flags & SCGETC_CN))
3001	random_harvest(&c, sizeof(c), 1, 0, RANDOM_KEYBOARD);
3002
3003    if (scp->kbd_mode != K_XLATE)
3004	return KEYCHAR(c);
3005
3006    /* if scroll-lock pressed allow history browsing */
3007    if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
3008
3009	scp->status &= ~CURSOR_ENABLED;
3010	sc_remove_cursor_image(scp);
3011
3012#ifndef SC_NO_HISTORY
3013	if (!(scp->status & BUFFER_SAVED)) {
3014	    scp->status |= BUFFER_SAVED;
3015	    sc_hist_save(scp);
3016	}
3017	switch (c) {
3018	/* FIXME: key codes */
3019	case SPCLKEY | FKEY | F(49):  /* home key */
3020	    sc_remove_cutmarking(scp);
3021	    sc_hist_home(scp);
3022	    goto next_code;
3023
3024	case SPCLKEY | FKEY | F(57):  /* end key */
3025	    sc_remove_cutmarking(scp);
3026	    sc_hist_end(scp);
3027	    goto next_code;
3028
3029	case SPCLKEY | FKEY | F(50):  /* up arrow key */
3030	    sc_remove_cutmarking(scp);
3031	    if (sc_hist_up_line(scp))
3032		if (!(flags & SCGETC_CN))
3033		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3034	    goto next_code;
3035
3036	case SPCLKEY | FKEY | F(58):  /* down arrow key */
3037	    sc_remove_cutmarking(scp);
3038	    if (sc_hist_down_line(scp))
3039		if (!(flags & SCGETC_CN))
3040		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3041	    goto next_code;
3042
3043	case SPCLKEY | FKEY | F(51):  /* page up key */
3044	    sc_remove_cutmarking(scp);
3045	    for (i=0; i<scp->ysize; i++)
3046	    if (sc_hist_up_line(scp)) {
3047		if (!(flags & SCGETC_CN))
3048		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3049		break;
3050	    }
3051	    goto next_code;
3052
3053	case SPCLKEY | FKEY | F(59):  /* page down key */
3054	    sc_remove_cutmarking(scp);
3055	    for (i=0; i<scp->ysize; i++)
3056	    if (sc_hist_down_line(scp)) {
3057		if (!(flags & SCGETC_CN))
3058		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
3059		break;
3060	    }
3061	    goto next_code;
3062	}
3063#endif /* SC_NO_HISTORY */
3064    }
3065
3066    /*
3067     * Process and consume special keys here.  Return a plain char code
3068     * or a char code with the META flag or a function key code.
3069     */
3070    if (c & RELKEY) {
3071	/* key released */
3072	/* goto next_code */
3073    } else {
3074	/* key pressed */
3075	if (c & SPCLKEY) {
3076	    c &= ~SPCLKEY;
3077	    switch (KEYCHAR(c)) {
3078	    /* LOCKING KEYS */
3079	    case NLK: case CLK: case ALK:
3080		break;
3081	    case SLK:
3082		kbd_ioctl(sc->kbd, KDGKBSTATE, (caddr_t)&f);
3083		if (f & SLKED) {
3084		    scp->status |= SLKED;
3085		} else {
3086		    if (scp->status & SLKED) {
3087			scp->status &= ~SLKED;
3088#ifndef SC_NO_HISTORY
3089			if (scp->status & BUFFER_SAVED) {
3090			    if (!sc_hist_restore(scp))
3091				sc_remove_cutmarking(scp);
3092			    scp->status &= ~BUFFER_SAVED;
3093			    scp->status |= CURSOR_ENABLED;
3094			    sc_draw_cursor_image(scp);
3095			}
3096			tp = VIRTUAL_TTY(sc, scp->index);
3097			if (tp->t_state & TS_ISOPEN)
3098			    scstart(tp);
3099#endif
3100		    }
3101		}
3102		break;
3103
3104	    case PASTE:
3105#ifndef SC_NO_CUTPASTE
3106		sc_mouse_paste(scp);
3107#endif
3108		break;
3109
3110	    /* NON-LOCKING KEYS */
3111	    case NOP:
3112	    case LSH:  case RSH:  case LCTR: case RCTR:
3113	    case LALT: case RALT: case ASH:  case META:
3114		break;
3115
3116	    case BTAB:
3117		if (!(sc->flags & SC_SCRN_BLANKED))
3118		    return c;
3119		break;
3120
3121	    case SPSC:
3122#if NSPLASH > 0
3123		/* force activatation/deactivation of the screen saver */
3124		if (!(sc->flags & SC_SCRN_BLANKED)) {
3125		    run_scrn_saver = TRUE;
3126		    sc->scrn_time_stamp -= scrn_blank_time;
3127		}
3128		if (cold) {
3129		    /*
3130		     * While devices are being probed, the screen saver need
3131		     * to be invoked explictly. XXX
3132		     */
3133		    if (sc->flags & SC_SCRN_BLANKED) {
3134			scsplash_stick(FALSE);
3135			stop_scrn_saver(sc, current_saver);
3136		    } else {
3137			if (!ISGRAPHSC(scp)) {
3138			    scsplash_stick(TRUE);
3139			    (*current_saver)(sc, TRUE);
3140			}
3141		    }
3142		}
3143#endif /* NSPLASH */
3144		break;
3145
3146	    case RBT:
3147#ifndef SC_DISABLE_REBOOT
3148		shutdown_nice(0);
3149#endif
3150		break;
3151
3152	    case HALT:
3153#ifndef SC_DISABLE_REBOOT
3154		shutdown_nice(RB_HALT);
3155#endif
3156		break;
3157
3158	    case PDWN:
3159#ifndef SC_DISABLE_REBOOT
3160		shutdown_nice(RB_HALT|RB_POWEROFF);
3161#endif
3162		break;
3163
3164#ifdef DEV_APM
3165	    case SUSP:
3166		apm_suspend(PMST_SUSPEND);
3167		break;
3168	    case STBY:
3169		apm_suspend(PMST_STANDBY);
3170		break;
3171#else
3172	    case SUSP:
3173	    case STBY:
3174		break;
3175#endif
3176
3177	    case DBG:
3178#ifndef SC_DISABLE_DDBKEY
3179#ifdef DDB
3180		Debugger("manual escape to debugger");
3181#else
3182		printf("No debugger in kernel\n");
3183#endif
3184#else /* SC_DISABLE_DDBKEY */
3185		/* do nothing */
3186#endif /* SC_DISABLE_DDBKEY */
3187		break;
3188
3189	    case PNC:
3190		if (enable_panic_key)
3191			panic("Forced by the panic key");
3192		break;
3193
3194	    case NEXT:
3195		this_scr = scp->index;
3196		for (i = (this_scr - sc->first_vty + 1)%sc->vtys;
3197			sc->first_vty + i != this_scr;
3198			i = (i + 1)%sc->vtys) {
3199		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
3200		    if (tp && tp->t_state & TS_ISOPEN) {
3201			sc_switch_scr(scp->sc, sc->first_vty + i);
3202			break;
3203		    }
3204		}
3205		break;
3206
3207	    case PREV:
3208		this_scr = scp->index;
3209		for (i = (this_scr - sc->first_vty + sc->vtys - 1)%sc->vtys;
3210			sc->first_vty + i != this_scr;
3211			i = (i + sc->vtys - 1)%sc->vtys) {
3212		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
3213		    if (tp && tp->t_state & TS_ISOPEN) {
3214			sc_switch_scr(scp->sc, sc->first_vty + i);
3215			break;
3216		    }
3217		}
3218		break;
3219
3220	    default:
3221		if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
3222		    sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
3223		    break;
3224		}
3225		/* assert(c & FKEY) */
3226		if (!(sc->flags & SC_SCRN_BLANKED))
3227		    return c;
3228		break;
3229	    }
3230	    /* goto next_code */
3231	} else {
3232	    /* regular keys (maybe MKEY is set) */
3233	    if (!(sc->flags & SC_SCRN_BLANKED))
3234		return c;
3235	}
3236    }
3237
3238    goto next_code;
3239}
3240
3241int
3242scmmap(dev_t dev, vm_offset_t offset, int nprot)
3243{
3244    scr_stat *scp;
3245
3246    scp = SC_STAT(dev);
3247    if (scp != scp->sc->cur_scp)
3248	return -1;
3249    return (*vidsw[scp->sc->adapter]->mmap)(scp->sc->adp, offset, nprot);
3250}
3251
3252static int
3253save_kbd_state(scr_stat *scp)
3254{
3255    int state;
3256    int error;
3257
3258    error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3259    if (error == ENOIOCTL)
3260	error = ENODEV;
3261    if (error == 0) {
3262	scp->status &= ~LOCK_MASK;
3263	scp->status |= state;
3264    }
3265    return error;
3266}
3267
3268static int
3269update_kbd_state(scr_stat *scp, int new_bits, int mask)
3270{
3271    int state;
3272    int error;
3273
3274    if (mask != LOCK_MASK) {
3275	error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
3276	if (error == ENOIOCTL)
3277	    error = ENODEV;
3278	if (error)
3279	    return error;
3280	state &= ~mask;
3281	state |= new_bits & mask;
3282    } else {
3283	state = new_bits & LOCK_MASK;
3284    }
3285    error = kbd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
3286    if (error == ENOIOCTL)
3287	error = ENODEV;
3288    return error;
3289}
3290
3291static int
3292update_kbd_leds(scr_stat *scp, int which)
3293{
3294    int error;
3295
3296    which &= LOCK_MASK;
3297    error = kbd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
3298    if (error == ENOIOCTL)
3299	error = ENODEV;
3300    return error;
3301}
3302
3303int
3304set_mode(scr_stat *scp)
3305{
3306    video_info_t info;
3307
3308    /* reject unsupported mode */
3309    if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, scp->mode, &info))
3310	return 1;
3311
3312    /* if this vty is not currently showing, do nothing */
3313    if (scp != scp->sc->cur_scp)
3314	return 0;
3315
3316    /* setup video hardware for the given mode */
3317    (*vidsw[scp->sc->adapter]->set_mode)(scp->sc->adp, scp->mode);
3318    sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3319		(void *)scp->sc->adp->va_window, FALSE);
3320
3321#ifndef SC_NO_FONT_LOADING
3322    /* load appropriate font */
3323    if (!(scp->status & GRAPHICS_MODE)) {
3324	if (!(scp->status & PIXEL_MODE) && ISFONTAVAIL(scp->sc->adp->va_flags)) {
3325	    if (scp->font_size < 14) {
3326		if (scp->sc->fonts_loaded & FONT_8)
3327		    sc_load_font(scp, 0, 8, scp->sc->font_8, 0, 256);
3328	    } else if (scp->font_size >= 16) {
3329		if (scp->sc->fonts_loaded & FONT_16)
3330		    sc_load_font(scp, 0, 16, scp->sc->font_16, 0, 256);
3331	    } else {
3332		if (scp->sc->fonts_loaded & FONT_14)
3333		    sc_load_font(scp, 0, 14, scp->sc->font_14, 0, 256);
3334	    }
3335	    /*
3336	     * FONT KLUDGE:
3337	     * This is an interim kludge to display correct font.
3338	     * Always use the font page #0 on the video plane 2.
3339	     * Somehow we cannot show the font in other font pages on
3340	     * some video cards... XXX
3341	     */
3342	    sc_show_font(scp, 0);
3343	}
3344	mark_all(scp);
3345    }
3346#endif /* !SC_NO_FONT_LOADING */
3347
3348    sc_set_border(scp, scp->border);
3349    sc_set_cursor_image(scp);
3350
3351    return 0;
3352}
3353
3354void
3355sc_set_border(scr_stat *scp, int color)
3356{
3357    ++scp->sc->videoio_in_progress;
3358    (*scp->rndr->draw_border)(scp, color);
3359    --scp->sc->videoio_in_progress;
3360}
3361
3362#ifndef SC_NO_FONT_LOADING
3363void
3364sc_load_font(scr_stat *scp, int page, int size, u_char *buf,
3365	     int base, int count)
3366{
3367    sc_softc_t *sc;
3368
3369    sc = scp->sc;
3370    sc->font_loading_in_progress = TRUE;
3371    (*vidsw[sc->adapter]->load_font)(sc->adp, page, size, buf, base, count);
3372    sc->font_loading_in_progress = FALSE;
3373}
3374
3375void
3376sc_save_font(scr_stat *scp, int page, int size, u_char *buf,
3377	     int base, int count)
3378{
3379    sc_softc_t *sc;
3380
3381    sc = scp->sc;
3382    sc->font_loading_in_progress = TRUE;
3383    (*vidsw[sc->adapter]->save_font)(sc->adp, page, size, buf, base, count);
3384    sc->font_loading_in_progress = FALSE;
3385}
3386
3387void
3388sc_show_font(scr_stat *scp, int page)
3389{
3390    (*vidsw[scp->sc->adapter]->show_font)(scp->sc->adp, page);
3391}
3392#endif /* !SC_NO_FONT_LOADING */
3393
3394void
3395sc_paste(scr_stat *scp, u_char *p, int count)
3396{
3397    struct tty *tp;
3398    u_char *rmap;
3399
3400    tp = VIRTUAL_TTY(scp->sc, scp->sc->cur_scp->index);
3401    if (!(tp->t_state & TS_ISOPEN))
3402	return;
3403    rmap = scp->sc->scr_rmap;
3404    for (; count > 0; --count)
3405	(*linesw[tp->t_line].l_rint)(rmap[*p++], tp);
3406}
3407
3408void
3409sc_bell(scr_stat *scp, int pitch, int duration)
3410{
3411    if (cold || shutdown_in_progress)
3412	return;
3413
3414    if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
3415	return;
3416
3417    if (scp->sc->flags & SC_VISUAL_BELL) {
3418	if (scp->sc->blink_in_progress)
3419	    return;
3420	scp->sc->blink_in_progress = 3;
3421	if (scp != scp->sc->cur_scp)
3422	    scp->sc->blink_in_progress += 2;
3423	blink_screen(scp->sc->cur_scp);
3424    } else {
3425	if (scp != scp->sc->cur_scp)
3426	    pitch *= 2;
3427	sysbeep(pitch, duration);
3428    }
3429}
3430
3431static void
3432blink_screen(void *arg)
3433{
3434    scr_stat *scp = arg;
3435    struct tty *tp;
3436
3437    if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
3438	scp->sc->blink_in_progress = 0;
3439    	mark_all(scp);
3440	tp = VIRTUAL_TTY(scp->sc, scp->index);
3441	if (tp->t_state & TS_ISOPEN)
3442	    scstart(tp);
3443	if (scp->sc->delayed_next_scr)
3444	    sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
3445    }
3446    else {
3447	(*scp->rndr->draw)(scp, 0, scp->xsize*scp->ysize,
3448			   scp->sc->blink_in_progress & 1);
3449	scp->sc->blink_in_progress--;
3450	timeout(blink_screen, scp, hz / 10);
3451    }
3452}
3453