1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1992-1998 S��ren Schmidt
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The DragonFly Project
8 * by Sascha Wildner <saw@online.de>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer,
15 *    without modification, immediately at the beginning of the file.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <sys/cdefs.h>
35#include "opt_syscons.h"
36#include "opt_splash.h"
37#include "opt_ddb.h"
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/bus.h>
42#include <sys/conf.h>
43#include <sys/cons.h>
44#include <sys/consio.h>
45#include <sys/kdb.h>
46#include <sys/eventhandler.h>
47#include <sys/fbio.h>
48#include <sys/kbio.h>
49#include <sys/kernel.h>
50#include <sys/lock.h>
51#include <sys/malloc.h>
52#include <sys/mutex.h>
53#include <sys/pcpu.h>
54#include <sys/priv.h>
55#include <sys/proc.h>
56#include <sys/random.h>
57#include <sys/reboot.h>
58#include <sys/serial.h>
59#include <sys/signalvar.h>
60#include <sys/smp.h>
61#include <sys/sysctl.h>
62#include <sys/tty.h>
63#include <sys/power.h>
64
65#include <machine/clock.h>
66#if defined(__arm__) || defined(__powerpc__)
67#include <machine/sc_machdep.h>
68#else
69#include <machine/pc/display.h>
70#endif
71#if defined(__i386__) || defined(__amd64__)
72#include <machine/psl.h>
73#include <machine/frame.h>
74#endif
75#include <machine/stdarg.h>
76
77#if defined(__amd64__) || defined(__i386__)
78#include <machine/vmparam.h>
79
80#include <vm/vm.h>
81#include <vm/pmap.h>
82#endif
83
84#include <dev/kbd/kbdreg.h>
85#include <dev/fb/fbreg.h>
86#include <dev/fb/splashreg.h>
87#include <dev/syscons/syscons.h>
88
89#define COLD 0
90#define WARM 1
91
92#define DEFAULT_BLANKTIME (5 * 60) /* 5 minutes */
93#define MAX_BLANKTIME (7 * 24 * 60 * 60) /* 7 days!? */
94
95#define KEYCODE_BS 0x0e /* "<-- Backspace" key, XXX */
96
97/* NULL-safe version of "tty_opened()" */
98#define tty_opened_ns(tp) ((tp) != NULL && tty_opened(tp))
99
100static u_char sc_kattrtab[MAXCPU];
101
102static int sc_console_unit = -1;
103static int sc_saver_keyb_only = 1;
104static scr_stat *sc_console;
105static struct consdev *sc_consptr;
106static void *sc_kts[MAXCPU];
107static struct sc_term_sw *sc_ktsw;
108static scr_stat main_console;
109static struct tty *main_devs[MAXCONS];
110
111static char init_done = COLD;
112static int shutdown_in_progress = FALSE;
113static int suspend_in_progress = FALSE;
114static char sc_malloc = FALSE;
115
116static int saver_mode = CONS_NO_SAVER; /* LKM/user saver */
117static int run_scrn_saver = FALSE; /* should run the saver? */
118static int enable_bell = TRUE; /* enable beeper */
119
120#ifndef SC_DISABLE_REBOOT
121static int enable_reboot = TRUE; /* enable keyboard reboot */
122#endif
123
124#ifndef SC_DISABLE_KDBKEY
125static int enable_kdbkey = TRUE; /* enable keyboard debug */
126#endif
127
128static long scrn_blank_time = 0; /* screen saver timeout value */
129#ifdef DEV_SPLASH
130static int scrn_blanked; /* # of blanked screen */
131static int sticky_splash = FALSE;
132
133static void
134none_saver(sc_softc_t *sc, int blank)
135{
136}
137static void (*current_saver)(sc_softc_t *, int) = none_saver;
138#endif
139
140#ifdef SC_NO_SUSPEND_VTYSWITCH
141static int sc_no_suspend_vtswitch = 1;
142#else
143static int sc_no_suspend_vtswitch = 0;
144#endif
145static int sc_susp_scr;
146
147static SYSCTL_NODE(_hw, OID_AUTO, syscons, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
148    "syscons");
149static SYSCTL_NODE(_hw_syscons, OID_AUTO, saver,
150    CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
151    "saver");
152SYSCTL_INT(_hw_syscons_saver, OID_AUTO, keybonly, CTLFLAG_RW,
153    &sc_saver_keyb_only, 0, "screen saver interrupted by input only");
154SYSCTL_INT(
155    _hw_syscons, OID_AUTO, bell, CTLFLAG_RW, &enable_bell, 0, "enable bell");
156#ifndef SC_DISABLE_REBOOT
157SYSCTL_INT(_hw_syscons, OID_AUTO, kbd_reboot, CTLFLAG_RW | CTLFLAG_SECURE,
158    &enable_reboot, 0, "enable keyboard reboot");
159#endif
160#ifndef SC_DISABLE_KDBKEY
161SYSCTL_INT(_hw_syscons, OID_AUTO, kbd_debug, CTLFLAG_RW | CTLFLAG_SECURE,
162    &enable_kdbkey, 0, "enable keyboard debug");
163#endif
164SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RWTUN,
165    &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
166#if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
167#include "font.h"
168#endif
169
170tsw_ioctl_t *sc_user_ioctl;
171
172static bios_values_t bios_value;
173
174static int enable_panic_key;
175SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
176    0, "Enable panic via keypress specified in kbdmap(5)");
177
178#define SC_CONSOLECTL 255
179
180#define VTY_WCHAN(sc, vty) (&SC_DEV(sc, vty))
181
182/* prototypes */
183static int sc_allocate_keyboard(sc_softc_t *sc, int unit);
184static int scvidprobe(int unit, int flags, int cons);
185static int sckbdprobe(int unit, int flags, int cons);
186static void scmeminit(void *arg);
187static int scdevtounit(struct tty *tp);
188static kbd_callback_func_t sckbdevent;
189static void scinit(int unit, int flags);
190static scr_stat *sc_get_stat(struct tty *tp);
191static void scterm(int unit, int flags);
192static void scshutdown(void *, int);
193static void scsuspend(void *);
194static void scresume(void *);
195static u_int scgetc(sc_softc_t *sc, u_int flags, struct sc_cnstate *sp);
196static void sc_puts(scr_stat *scp, u_char *buf, int len);
197#define SCGETC_CN 1
198#define SCGETC_NONBLOCK 2
199static void sccnupdate(scr_stat *scp);
200static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
201static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
202static callout_func_t scrn_timer;
203static int and_region(int *s1, int *e1, int s2, int e2);
204static void scrn_update(scr_stat *scp, int show_cursor);
205
206#ifdef DEV_SPLASH
207static int scsplash_callback(int event, void *arg);
208static void scsplash_saver(sc_softc_t *sc, int show);
209static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
210static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
211static int set_scrn_saver_mode(
212    scr_stat *scp, int mode, u_char *pal, int border);
213static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
214static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
215static int wait_scrn_saver_stop(sc_softc_t *sc);
216#define scsplash_stick(stick) (sticky_splash = (stick))
217#else /* !DEV_SPLASH */
218#define scsplash_stick(stick)
219#endif /* DEV_SPLASH */
220
221static int do_switch_scr(sc_softc_t *sc, int s);
222static int vt_proc_alive(scr_stat *scp);
223static int signal_vt_rel(scr_stat *scp);
224static int signal_vt_acq(scr_stat *scp);
225static int finish_vt_rel(scr_stat *scp, int release, int *s);
226static int finish_vt_acq(scr_stat *scp);
227static void exchange_scr(sc_softc_t *sc);
228static void update_cursor_image(scr_stat *scp);
229static void change_cursor_shape(scr_stat *scp, int flags, int base, int height);
230static void update_font(scr_stat *);
231static int save_kbd_state(scr_stat *scp);
232static int update_kbd_state(scr_stat *scp, int state, int mask);
233static int update_kbd_leds(scr_stat *scp, int which);
234static int sc_kattr(void);
235static callout_func_t blink_screen;
236static struct tty *sc_alloc_tty(int, int);
237
238static cn_probe_t sc_cnprobe;
239static cn_init_t sc_cninit;
240static cn_term_t sc_cnterm;
241static cn_getc_t sc_cngetc;
242static cn_putc_t sc_cnputc;
243static cn_grab_t sc_cngrab;
244static cn_ungrab_t sc_cnungrab;
245
246CONSOLE_DRIVER(sc);
247
248static tsw_open_t sctty_open;
249static tsw_close_t sctty_close;
250static tsw_outwakeup_t sctty_outwakeup;
251static tsw_ioctl_t sctty_ioctl;
252static tsw_mmap_t sctty_mmap;
253
254static struct ttydevsw sc_ttydevsw = {
255	.tsw_open = sctty_open,
256	.tsw_close = sctty_close,
257	.tsw_outwakeup = sctty_outwakeup,
258	.tsw_ioctl = sctty_ioctl,
259	.tsw_mmap = sctty_mmap,
260};
261
262static d_ioctl_t consolectl_ioctl;
263static d_close_t consolectl_close;
264
265static struct cdevsw consolectl_devsw = {
266	.d_version = D_VERSION,
267	.d_flags = D_NEEDGIANT | D_TRACKCLOSE,
268	.d_ioctl = consolectl_ioctl,
269	.d_close = consolectl_close,
270	.d_name = "consolectl",
271};
272
273/* ec -- emergency console. */
274
275static u_int ec_scroffset;
276
277static void
278ec_putc(int c)
279{
280	uintptr_t fb;
281	u_short *scrptr;
282	u_int ind;
283	int attr, column, mysize, width, xsize, yborder, ysize;
284
285	if (c < 0 || c > 0xff || c == '\a')
286		return;
287	if (sc_console == NULL) {
288#if !defined(__amd64__) && !defined(__i386__)
289		return;
290#else
291		/*
292		 * This is enough for ec_putc() to work very early on x86
293		 * if the kernel starts in normal color text mode.
294		 */
295#ifdef __amd64__
296		fb = KERNBASE + 0xb8000;
297#else /* __i386__ */
298		fb = pmap_get_map_low() + 0xb8000;
299#endif
300		xsize = 80;
301		ysize = 25;
302#endif
303	} else {
304		if (!ISTEXTSC(&main_console))
305			return;
306		fb = main_console.sc->adp->va_window;
307		xsize = main_console.xsize;
308		ysize = main_console.ysize;
309	}
310	yborder = ysize / 5;
311	scrptr = (u_short *)(void *)fb + xsize * yborder;
312	mysize = xsize * (ysize - 2 * yborder);
313	do {
314		ind = ec_scroffset;
315		column = ind % xsize;
316		width = (c == '\b' ?
317			-1 :
318			c == '\t' ?
319			(column + 8) & ~7 :
320			c == '\r' ? -column : c == '\n' ? xsize - column : 1);
321		if (width == 0 || (width < 0 && ind < -width))
322			return;
323	} while (atomic_cmpset_rel_int(&ec_scroffset, ind, ind + width) == 0);
324	if (c == '\b' || c == '\r')
325		return;
326	if (c == '\n')
327		ind += xsize; /* XXX clearing from new pos is not atomic */
328
329	attr = sc_kattr();
330	if (c == '\t' || c == '\n')
331		c = ' ';
332	do
333		scrptr[ind++ % mysize] = (attr << 8) | c;
334	while (--width != 0);
335}
336
337int
338sc_probe_unit(int unit, int flags)
339{
340	if (!vty_enabled(VTY_SC))
341		return ENXIO;
342	if (!scvidprobe(unit, flags, FALSE)) {
343		if (bootverbose)
344			printf("%s%d: no video adapter found.\n",
345			    SC_DRIVER_NAME, unit);
346		return ENXIO;
347	}
348
349	/* syscons will be attached even when there is no keyboard */
350	sckbdprobe(unit, flags, FALSE);
351
352	return 0;
353}
354
355/* probe video adapters, return TRUE if found */
356static int
357scvidprobe(int unit, int flags, int cons)
358{
359	/*
360	 * Access the video adapter driver through the back door!
361	 * Video adapter drivers need to be configured before syscons.
362	 * However, when syscons is being probed as the low-level console,
363	 * they have not been initialized yet.  We force them to initialize
364	 * themselves here. XXX
365	 */
366	vid_configure(cons ? VIO_PROBE_ONLY : 0);
367
368	return (vid_find_adapter("*", unit) >= 0);
369}
370
371/* probe the keyboard, return TRUE if found */
372static int
373sckbdprobe(int unit, int flags, int cons)
374{
375	/* access the keyboard driver through the backdoor! */
376	kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
377
378	return (kbd_find_keyboard("*", unit) >= 0);
379}
380
381static char *
382adapter_name(video_adapter_t *adp)
383{
384	static struct {
385		int type;
386		char *name[2];
387	} names[] = {
388		{ KD_MONO, { "MDA", "MDA" } },
389		{ KD_HERCULES, { "Hercules", "Hercules" } },
390		{ KD_CGA, { "CGA", "CGA" } },
391		{ KD_EGA, { "EGA", "EGA (mono)" } },
392		{ KD_VGA, { "VGA", "VGA (mono)" } },
393		{ KD_TGA, { "TGA", "TGA" } },
394		{ -1, { "Unknown", "Unknown" } },
395	};
396	int i;
397
398	for (i = 0; names[i].type != -1; ++i)
399		if (names[i].type == adp->va_type)
400			break;
401	return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
402}
403
404static void
405sctty_outwakeup(struct tty *tp)
406{
407	size_t len;
408	u_char buf[PCBURST];
409	scr_stat *scp = sc_get_stat(tp);
410
411	if (scp->status & SLKED ||
412	    (scp == scp->sc->cur_scp && scp->sc->blink_in_progress))
413		return;
414
415	for (;;) {
416		len = ttydisc_getc(tp, buf, sizeof buf);
417		if (len == 0)
418			break;
419		SC_VIDEO_LOCK(scp->sc);
420		sc_puts(scp, buf, len);
421		SC_VIDEO_UNLOCK(scp->sc);
422	}
423}
424
425static struct tty *
426sc_alloc_tty(int index, int devnum)
427{
428	struct sc_ttysoftc *stc;
429	struct tty *tp;
430
431	/* Allocate TTY object and softc to store unit number. */
432	stc = malloc(sizeof(struct sc_ttysoftc), M_DEVBUF, M_WAITOK);
433	stc->st_index = index;
434	stc->st_stat = NULL;
435	tp = tty_alloc_mutex(&sc_ttydevsw, stc, &Giant);
436
437	/* Create device node. */
438	tty_makedev(tp, NULL, "v%r", devnum);
439
440	return (tp);
441}
442
443#ifdef SC_PIXEL_MODE
444static void
445sc_set_vesa_mode(scr_stat *scp, sc_softc_t *sc, int unit)
446{
447	video_info_t info;
448	u_char *font;
449	int depth;
450	int fontsize;
451	int i;
452	int vmode;
453
454	vmode = 0;
455	(void)resource_int_value("sc", unit, "vesa_mode", &vmode);
456	if (vmode < M_VESA_BASE || vmode > M_VESA_MODE_MAX ||
457	    vidd_get_info(sc->adp, vmode, &info) != 0 ||
458	    !sc_support_pixel_mode(&info))
459		vmode = 0;
460
461	/*
462	 * If the mode is unset or unsupported, search for an available
463	 * 800x600 graphics mode with the highest color depth.
464	 */
465	if (vmode == 0) {
466		for (depth = 0, i = M_VESA_BASE; i <= M_VESA_MODE_MAX; i++)
467			if (vidd_get_info(sc->adp, i, &info) == 0 &&
468			    info.vi_width == 800 && info.vi_height == 600 &&
469			    sc_support_pixel_mode(&info) &&
470			    info.vi_depth > depth) {
471				vmode = i;
472				depth = info.vi_depth;
473			}
474		if (vmode == 0)
475			return;
476		vidd_get_info(sc->adp, vmode, &info);
477	}
478
479#if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
480	fontsize = info.vi_cheight;
481#else
482	fontsize = scp->font_size;
483#endif
484	if (fontsize < 14)
485		fontsize = 8;
486	else if (fontsize >= 16)
487		fontsize = 16;
488	else
489		fontsize = 14;
490#ifndef SC_NO_FONT_LOADING
491	switch (fontsize) {
492	case 8:
493		if ((sc->fonts_loaded & FONT_8) == 0)
494			return;
495		font = sc->font_8;
496		break;
497	case 14:
498		if ((sc->fonts_loaded & FONT_14) == 0)
499			return;
500		font = sc->font_14;
501		break;
502	case 16:
503		if ((sc->fonts_loaded & FONT_16) == 0)
504			return;
505		font = sc->font_16;
506		break;
507	}
508#else
509	font = NULL;
510#endif
511#ifdef DEV_SPLASH
512	if ((sc->flags & SC_SPLASH_SCRN) != 0)
513		splash_term(sc->adp);
514#endif
515#ifndef SC_NO_HISTORY
516	if (scp->history != NULL) {
517		sc_vtb_append(&scp->vtb, 0, scp->history,
518		    scp->ypos * scp->xsize + scp->xpos);
519		scp->history_pos = sc_vtb_tail(scp->history);
520	}
521#endif
522	vidd_set_mode(sc->adp, vmode);
523	scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
524	scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
525	scp->xpixel = info.vi_width;
526	scp->ypixel = info.vi_height;
527	scp->xsize = scp->xpixel / 8;
528	scp->ysize = scp->ypixel / fontsize;
529	scp->xpos = 0;
530	scp->ypos = scp->ysize - 1;
531	scp->xoff = scp->yoff = 0;
532	scp->font = font;
533	scp->font_size = fontsize;
534	scp->font_width = 8;
535	scp->start = scp->xsize * scp->ysize - 1;
536	scp->end = 0;
537	scp->cursor_pos = scp->cursor_oldpos = scp->xsize * scp->xsize;
538	scp->mode = sc->initial_mode = vmode;
539	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
540	    (void *)sc->adp->va_window, FALSE);
541	sc_alloc_scr_buffer(scp, FALSE, FALSE);
542	sc_init_emulator(scp, NULL);
543#ifndef SC_NO_CUTPASTE
544	sc_alloc_cut_buffer(scp, FALSE);
545#endif
546#ifndef SC_NO_HISTORY
547	sc_alloc_history_buffer(scp, 0, 0, FALSE);
548#endif
549	sc_set_border(scp, scp->border);
550	sc_set_cursor_image(scp);
551	scp->status &= ~UNKNOWN_MODE;
552#ifdef DEV_SPLASH
553	if ((sc->flags & SC_SPLASH_SCRN) != 0)
554		splash_init(sc->adp, scsplash_callback, sc);
555#endif
556}
557#endif
558
559int
560sc_attach_unit(int unit, int flags)
561{
562	sc_softc_t *sc;
563	scr_stat *scp;
564	struct cdev *dev;
565	void *oldts, *ts;
566	int i, vc;
567
568	if (!vty_enabled(VTY_SC))
569		return ENXIO;
570
571	flags &= ~SC_KERNEL_CONSOLE;
572
573	if (sc_console_unit == unit) {
574		/*
575		 * If this unit is being used as the system console, we need to
576		 * adjust some variables and buffers before and after scinit().
577		 */
578		/* assert(sc_console != NULL) */
579		flags |= SC_KERNEL_CONSOLE;
580		scmeminit(NULL);
581
582		scinit(unit, flags);
583
584		if (sc_console->tsw->te_size > 0) {
585			sc_ktsw = sc_console->tsw;
586			/* assert(sc_console->ts != NULL); */
587			oldts = sc_console->ts;
588			for (i = 0; i <= mp_maxid; i++) {
589				ts = malloc(sc_console->tsw->te_size, M_DEVBUF,
590				    M_WAITOK | M_ZERO);
591				(*sc_console->tsw->te_init)(
592				    sc_console, &ts, SC_TE_COLD_INIT);
593				sc_console->ts = ts;
594				(*sc_console->tsw->te_default_attr)(sc_console,
595				    sc_kattrtab[i], SC_KERNEL_CONS_REV_ATTR);
596				sc_kts[i] = ts;
597			}
598			sc_console->ts = oldts;
599			(*sc_console->tsw->te_default_attr)(
600			    sc_console, SC_NORM_ATTR, SC_NORM_REV_ATTR);
601		}
602	} else {
603		scinit(unit, flags);
604	}
605
606	sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
607	sc->config = flags;
608	callout_init(&sc->ctimeout, 0);
609	callout_init(&sc->cblink, 0);
610	scp = sc_get_stat(sc->dev[0]);
611	if (sc_console == NULL) /* sc_console_unit < 0 */
612		sc_console = scp;
613
614#ifdef SC_PIXEL_MODE
615	if ((sc->config & SC_VESAMODE) != 0)
616		sc_set_vesa_mode(scp, sc, unit);
617#endif /* SC_PIXEL_MODE */
618
619	/* initialize cursor */
620	if (!ISGRAPHSC(scp))
621		update_cursor_image(scp);
622
623	/* get screen update going */
624	scrn_timer(sc);
625
626	/* set up the keyboard */
627	(void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
628	update_kbd_state(scp, scp->status, LOCK_MASK);
629
630	printf("%s%d: %s <%d virtual consoles, flags=0x%x>\n", SC_DRIVER_NAME,
631	    unit, adapter_name(sc->adp), sc->vtys, sc->config);
632	if (bootverbose) {
633		printf("%s%d:", SC_DRIVER_NAME, unit);
634		if (sc->adapter >= 0)
635			printf(" fb%d", sc->adapter);
636		if (sc->kbd != NULL)
637			printf(", kbd%d", sc->kbd->kb_index);
638		if (scp->tsw)
639			printf(", terminal emulator: %s (%s)",
640			    scp->tsw->te_name, scp->tsw->te_desc);
641		printf("\n");
642	}
643
644	/* Register suspend/resume/shutdown callbacks for the kernel console. */
645	if (sc_console_unit == unit) {
646		EVENTHANDLER_REGISTER(
647		    power_suspend_early, scsuspend, NULL, EVENTHANDLER_PRI_ANY);
648		EVENTHANDLER_REGISTER(
649		    power_resume, scresume, NULL, EVENTHANDLER_PRI_ANY);
650		EVENTHANDLER_REGISTER(
651		    shutdown_pre_sync, scshutdown, NULL, SHUTDOWN_PRI_DEFAULT);
652	}
653
654	for (vc = 0; vc < sc->vtys; vc++) {
655		if (sc->dev[vc] == NULL) {
656			sc->dev[vc] = sc_alloc_tty(vc, vc + unit * MAXCONS);
657			if (vc == 0 && sc->dev == main_devs)
658				SC_STAT(sc->dev[0]) = &main_console;
659		}
660		/*
661		 * The first vty already has struct tty and scr_stat initialized
662		 * in scinit().  The other vtys will have these structs when
663		 * first opened.
664		 */
665	}
666
667	dev = make_dev(
668	    &consolectl_devsw, 0, UID_ROOT, GID_WHEEL, 0600, "consolectl");
669	dev->si_drv1 = sc->dev[0];
670
671	return 0;
672}
673
674static void
675scmeminit(void *arg)
676{
677	if (!vty_enabled(VTY_SC))
678		return;
679	if (sc_malloc)
680		return;
681	sc_malloc = TRUE;
682
683	/*
684	 * As soon as malloc() becomes functional, we had better allocate
685	 * various buffers for the kernel console.
686	 */
687
688	if (sc_console_unit < 0) /* sc_console == NULL */
689		return;
690
691	/* copy the temporary buffer to the final buffer */
692	sc_alloc_scr_buffer(sc_console, FALSE, FALSE);
693
694#ifndef SC_NO_CUTPASTE
695	sc_alloc_cut_buffer(sc_console, FALSE);
696#endif
697
698#ifndef SC_NO_HISTORY
699	/* initialize history buffer & pointers */
700	sc_alloc_history_buffer(sc_console, 0, 0, FALSE);
701#endif
702}
703
704/* XXX */
705SYSINIT(sc_mem, SI_SUB_KMEM, SI_ORDER_ANY, scmeminit, NULL);
706
707static int
708scdevtounit(struct tty *tp)
709{
710	int vty = SC_VTY(tp);
711
712	if (vty == SC_CONSOLECTL)
713		return ((sc_console != NULL) ? sc_console->sc->unit : -1);
714	else if ((vty < 0) || (vty >= MAXCONS * sc_max_unit()))
715		return -1;
716	else
717		return vty / MAXCONS;
718}
719
720static int
721sctty_open(struct tty *tp)
722{
723	int unit = scdevtounit(tp);
724	sc_softc_t *sc;
725	scr_stat *scp;
726	keyarg_t key;
727
728	DPRINTF(5,
729	    ("scopen: dev:%s, unit:%d, vty:%d\n", devtoname(tp->t_dev), unit,
730		SC_VTY(tp)));
731
732	sc = sc_get_softc(
733	    unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
734	if (sc == NULL)
735		return ENXIO;
736
737	if (!tty_opened(tp)) {
738		/* Use the current setting of the <-- key as default VERASE. */
739		/* If the Delete key is preferable, an stty is necessary     */
740		if (sc->kbd != NULL) {
741			key.keynum = KEYCODE_BS;
742			(void)kbdd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
743			tp->t_termios.c_cc[VERASE] = key.key.map[0];
744		}
745	}
746
747	scp = sc_get_stat(tp);
748	if (scp == NULL) {
749		scp = SC_STAT(tp) = alloc_scp(sc, SC_VTY(tp));
750		if (ISGRAPHSC(scp))
751			sc_set_pixel_mode(scp, NULL, 0, 0, 16, 8);
752	}
753	if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
754		tp->t_winsize.ws_col = scp->xsize;
755		tp->t_winsize.ws_row = scp->ysize;
756	}
757
758	return (0);
759}
760
761static void
762sctty_close(struct tty *tp)
763{
764	scr_stat *scp;
765	int s;
766
767	if (SC_VTY(tp) != SC_CONSOLECTL) {
768		scp = sc_get_stat(tp);
769		/* were we in the middle of the VT switching process? */
770		DPRINTF(5, ("sc%d: scclose(), ", scp->sc->unit));
771		s = spltty();
772		if ((scp == scp->sc->cur_scp) &&
773		    (scp->sc->unit == sc_console_unit))
774			cnavailable(sc_consptr, TRUE);
775		if (finish_vt_rel(scp, TRUE, &s) == 0) /* force release */
776			DPRINTF(5, ("reset WAIT_REL, "));
777		if (finish_vt_acq(scp) == 0) /* force acknowledge */
778			DPRINTF(5, ("reset WAIT_ACQ, "));
779#ifdef not_yet_done
780		if (scp == &main_console) {
781			scp->pid = 0;
782			scp->proc = NULL;
783			scp->smode.mode = VT_AUTO;
784		} else {
785			sc_vtb_destroy(&scp->vtb);
786			sc_vtb_destroy(&scp->scr);
787			sc_free_history_buffer(scp, scp->ysize);
788			SC_STAT(tp) = NULL;
789			free(scp, M_DEVBUF);
790		}
791#else
792		scp->pid = 0;
793		scp->proc = NULL;
794		scp->smode.mode = VT_AUTO;
795#endif
796		scp->kbd_mode = K_XLATE;
797		if (scp == scp->sc->cur_scp)
798			(void)kbdd_ioctl(
799			    scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
800		DPRINTF(5, ("done.\n"));
801	}
802}
803
804#if 0 /* XXX mpsafetty: fix screensaver. What about outwakeup? */
805static int
806scread(struct cdev *dev, struct uio *uio, int flag)
807{
808    if (!sc_saver_keyb_only)
809	sc_touch_scrn_saver();
810    return ttyread(dev, uio, flag);
811}
812#endif
813
814static int
815sckbdevent(keyboard_t *thiskbd, int event, void *arg)
816{
817	sc_softc_t *sc;
818	struct tty *cur_tty;
819	int c, error = 0;
820	size_t len;
821	const u_char *cp;
822
823	sc = (sc_softc_t *)arg;
824	/* assert(thiskbd == sc->kbd) */
825
826	mtx_lock(&Giant);
827
828	switch (event) {
829	case KBDIO_KEYINPUT:
830		break;
831	case KBDIO_UNLOADING:
832		sc->kbd = NULL;
833		kbd_release(thiskbd, (void *)&sc->kbd);
834		goto done;
835	default:
836		error = EINVAL;
837		goto done;
838	}
839
840	/*
841	 * Loop while there is still input to get from the keyboard.
842	 * I don't think this is nessesary, and it doesn't fix
843	 * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
844	 */
845	while ((c = scgetc(sc, SCGETC_NONBLOCK, NULL)) != NOKEY) {
846		cur_tty = SC_DEV(sc, sc->cur_scp->index);
847		if (!tty_opened_ns(cur_tty))
848			continue;
849
850		if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
851			continue;
852
853		switch (KEYFLAGS(c)) {
854		case 0x0000: /* normal key */
855			ttydisc_rint(cur_tty, KEYCHAR(c), 0);
856			break;
857		case FKEY: /* function key, return string */
858			cp = (*sc->cur_scp->tsw->te_fkeystr)(sc->cur_scp, c);
859			if (cp != NULL) {
860				ttydisc_rint_simple(cur_tty, cp, strlen(cp));
861				break;
862			}
863			cp = kbdd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
864			if (cp != NULL)
865				ttydisc_rint_simple(cur_tty, cp, len);
866			break;
867		case MKEY: /* meta is active, prepend ESC */
868			ttydisc_rint(cur_tty, 0x1b, 0);
869			ttydisc_rint(cur_tty, KEYCHAR(c), 0);
870			break;
871		case BKEY: /* backtab fixed sequence (esc [ Z) */
872			ttydisc_rint_simple(cur_tty, "\x1B[Z", 3);
873			break;
874		}
875
876		ttydisc_rint_done(cur_tty);
877	}
878
879	sc->cur_scp->status |= MOUSE_HIDDEN;
880
881done:
882	mtx_unlock(&Giant);
883	return (error);
884}
885
886static int
887sctty_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
888{
889	int error;
890	int i;
891	struct cursor_attr *cap;
892	sc_softc_t *sc;
893	scr_stat *scp;
894	int s;
895#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
896    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
897	int ival;
898#endif
899
900	/* If there is a user_ioctl function call that first */
901	if (sc_user_ioctl) {
902		error = (*sc_user_ioctl)(tp, cmd, data, td);
903		if (error != ENOIOCTL)
904			return error;
905	}
906
907	error = sc_vid_ioctl(tp, cmd, data, td);
908	if (error != ENOIOCTL)
909		return error;
910
911#ifndef SC_NO_HISTORY
912	error = sc_hist_ioctl(tp, cmd, data, td);
913	if (error != ENOIOCTL)
914		return error;
915#endif
916
917#ifndef SC_NO_SYSMOUSE
918	error = sc_mouse_ioctl(tp, cmd, data, td);
919	if (error != ENOIOCTL)
920		return error;
921#endif
922
923	scp = sc_get_stat(tp);
924	/* assert(scp != NULL) */
925	/* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
926	sc = scp->sc;
927
928	if (scp->tsw) {
929		error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, td);
930		if (error != ENOIOCTL)
931			return error;
932	}
933
934	switch (cmd) { /* process console hardware related ioctl's */
935
936	case GIO_ATTR: /* get current attributes */
937		/* this ioctl is not processed here, but in the terminal
938		 * emulator */
939		return ENOTTY;
940
941	case GIO_COLOR: /* is this a color console ? */
942		*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
943		return 0;
944
945	case CONS_BLANKTIME: /* set screen saver timeout (0 = no saver) */
946		if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
947			return EINVAL;
948		s = spltty();
949		scrn_blank_time = *(int *)data;
950		run_scrn_saver = (scrn_blank_time != 0);
951		splx(s);
952		return 0;
953
954	case CONS_CURSORTYPE: /* set cursor type (old interface + HIDDEN) */
955		s = spltty();
956		*(int *)data &= CONS_CURSOR_ATTRS;
957		sc_change_cursor_shape(scp, *(int *)data, -1, -1);
958		splx(s);
959		return 0;
960
961	case CONS_GETCURSORSHAPE: /* get cursor shape (new interface) */
962		switch (((int *)data)[0] &
963		    (CONS_DEFAULT_CURSOR | CONS_LOCAL_CURSOR)) {
964		case 0:
965			cap = &sc->curs_attr;
966			break;
967		case CONS_LOCAL_CURSOR:
968			cap = &scp->base_curs_attr;
969			break;
970		case CONS_DEFAULT_CURSOR:
971			cap = &sc->dflt_curs_attr;
972			break;
973		case CONS_DEFAULT_CURSOR | CONS_LOCAL_CURSOR:
974			cap = &scp->dflt_curs_attr;
975			break;
976		}
977		if (((int *)data)[0] & CONS_CHARCURSOR_COLORS) {
978			((int *)data)[1] = cap->bg[0];
979			((int *)data)[2] = cap->bg[1];
980		} else if (((int *)data)[0] & CONS_MOUSECURSOR_COLORS) {
981			((int *)data)[1] = cap->mouse_ba;
982			((int *)data)[2] = cap->mouse_ia;
983		} else {
984			((int *)data)[1] = cap->base;
985			((int *)data)[2] = cap->height;
986		}
987		((int *)data)[0] = cap->flags;
988		return 0;
989
990	case CONS_SETCURSORSHAPE: /* set cursor shape (new interface) */
991		s = spltty();
992		sc_change_cursor_shape(
993		    scp, ((int *)data)[0], ((int *)data)[1], ((int *)data)[2]);
994		splx(s);
995		return 0;
996
997	case CONS_BELLTYPE: /* set bell type sound/visual */
998		if ((*(int *)data) & CONS_VISUAL_BELL)
999			sc->flags |= SC_VISUAL_BELL;
1000		else
1001			sc->flags &= ~SC_VISUAL_BELL;
1002		if ((*(int *)data) & CONS_QUIET_BELL)
1003			sc->flags |= SC_QUIET_BELL;
1004		else
1005			sc->flags &= ~SC_QUIET_BELL;
1006		return 0;
1007
1008	case CONS_GETINFO: /* get current (virtual) console info */
1009	{
1010		vid_info_t *ptr = (vid_info_t *)data;
1011		if (ptr->size == sizeof(struct vid_info)) {
1012			ptr->m_num = sc->cur_scp->index;
1013			ptr->font_size = scp->font_size;
1014			ptr->mv_col = scp->xpos;
1015			ptr->mv_row = scp->ypos;
1016			ptr->mv_csz = scp->xsize;
1017			ptr->mv_rsz = scp->ysize;
1018			ptr->mv_hsz =
1019			    (scp->history != NULL) ? scp->history->vtb_rows : 0;
1020			/*
1021			 * The following fields are filled by the terminal
1022			 * emulator. XXX
1023			 *
1024			 * ptr->mv_norm.fore
1025			 * ptr->mv_norm.back
1026			 * ptr->mv_rev.fore
1027			 * ptr->mv_rev.back
1028			 */
1029			ptr->mv_grfc.fore = 0; /* not supported */
1030			ptr->mv_grfc.back = 0; /* not supported */
1031			ptr->mv_ovscan = scp->border;
1032			if (scp == sc->cur_scp)
1033				save_kbd_state(scp);
1034			ptr->mk_keylock = scp->status & LOCK_MASK;
1035			return 0;
1036		}
1037		return EINVAL;
1038	}
1039
1040	case CONS_GETVERS: /* get version number */
1041		*(int *)data = 0x200; /* version 2.0 */
1042		return 0;
1043
1044	case CONS_IDLE: /* see if the screen has been idle */
1045		/*
1046		 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
1047		 * the user process may have been writing something on the
1048		 * screen and syscons is not aware of it. Declare the screen
1049		 * is NOT idle if it is in one of these modes. But there is
1050		 * an exception to it; if a screen saver is running in the
1051		 * graphics mode in the current screen, we should say that the
1052		 * screen has been idle.
1053		 */
1054		*(int *)data = (sc->flags & SC_SCRN_IDLE) &&
1055		    (!ISGRAPHSC(sc->cur_scp) ||
1056			(sc->cur_scp->status & SAVER_RUNNING));
1057		return 0;
1058
1059	case CONS_SAVERMODE: /* set saver mode */
1060		switch (*(int *)data) {
1061		case CONS_NO_SAVER:
1062		case CONS_USR_SAVER:
1063			/* if a LKM screen saver is running, stop it first. */
1064			scsplash_stick(FALSE);
1065			saver_mode = *(int *)data;
1066			s = spltty();
1067#ifdef DEV_SPLASH
1068			if ((error = wait_scrn_saver_stop(NULL))) {
1069				splx(s);
1070				return error;
1071			}
1072#endif
1073			run_scrn_saver = TRUE;
1074			if (saver_mode == CONS_USR_SAVER)
1075				scp->status |= SAVER_RUNNING;
1076			else
1077				scp->status &= ~SAVER_RUNNING;
1078			scsplash_stick(TRUE);
1079			splx(s);
1080			break;
1081		case CONS_LKM_SAVER:
1082			s = spltty();
1083			if ((saver_mode == CONS_USR_SAVER) &&
1084			    (scp->status & SAVER_RUNNING))
1085				scp->status &= ~SAVER_RUNNING;
1086			saver_mode = *(int *)data;
1087			splx(s);
1088			break;
1089		default:
1090			return EINVAL;
1091		}
1092		return 0;
1093
1094	case CONS_SAVERSTART: /* immediately start/stop the screen saver */
1095		/*
1096		 * Note that this ioctl does not guarantee the screen saver
1097		 * actually starts or stops. It merely attempts to do so...
1098		 */
1099		s = spltty();
1100		run_scrn_saver = (*(int *)data != 0);
1101		if (run_scrn_saver)
1102			sc->scrn_time_stamp -= scrn_blank_time;
1103		splx(s);
1104		return 0;
1105
1106	case CONS_SCRSHOT: /* get a screen shot */
1107	{
1108		int retval, hist_rsz;
1109		size_t lsize, csize;
1110		vm_offset_t frbp, hstp;
1111		unsigned lnum;
1112		scrshot_t *ptr = (scrshot_t *)data;
1113		void *outp = ptr->buf;
1114
1115		if (ptr->x < 0 || ptr->y < 0 || ptr->xsize < 0 ||
1116		    ptr->ysize < 0)
1117			return EINVAL;
1118		s = spltty();
1119		if (ISGRAPHSC(scp)) {
1120			splx(s);
1121			return EOPNOTSUPP;
1122		}
1123		hist_rsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
1124		if (((u_int)ptr->x + ptr->xsize) > scp->xsize ||
1125		    ((u_int)ptr->y + ptr->ysize) > (scp->ysize + hist_rsz)) {
1126			splx(s);
1127			return EINVAL;
1128		}
1129
1130		lsize = scp->xsize * sizeof(u_int16_t);
1131		csize = ptr->xsize * sizeof(u_int16_t);
1132		/* Pointer to the last line of framebuffer */
1133		frbp = scp->vtb.vtb_buffer + scp->ysize * lsize +
1134		    ptr->x * sizeof(u_int16_t);
1135		/* Pointer to the last line of target buffer */
1136		outp = (char *)outp + ptr->ysize * csize;
1137		/* Pointer to the last line of history buffer */
1138		if (scp->history != NULL)
1139			hstp = scp->history->vtb_buffer +
1140			    sc_vtb_tail(scp->history) * sizeof(u_int16_t) +
1141			    ptr->x * sizeof(u_int16_t);
1142		else
1143			hstp = 0;
1144
1145		retval = 0;
1146		for (lnum = 0; lnum < (ptr->y + ptr->ysize); lnum++) {
1147			if (lnum < scp->ysize) {
1148				frbp -= lsize;
1149			} else {
1150				hstp -= lsize;
1151				if (hstp < scp->history->vtb_buffer)
1152					hstp += scp->history->vtb_rows * lsize;
1153				frbp = hstp;
1154			}
1155			if (lnum < ptr->y)
1156				continue;
1157			outp = (char *)outp - csize;
1158			retval = copyout((void *)frbp, outp, csize);
1159			if (retval != 0)
1160				break;
1161		}
1162		splx(s);
1163		return retval;
1164	}
1165
1166	case VT_SETMODE: /* set screen switcher mode */
1167	{
1168		struct vt_mode *mode;
1169		struct proc *p1;
1170
1171		mode = (struct vt_mode *)data;
1172		DPRINTF(5, ("%s%d: VT_SETMODE ", SC_DRIVER_NAME, sc->unit));
1173		if (scp->smode.mode == VT_PROCESS) {
1174			p1 = pfind(scp->pid);
1175			if (scp->proc == p1 && scp->proc != td->td_proc) {
1176				if (p1)
1177					PROC_UNLOCK(p1);
1178				DPRINTF(5, ("error EPERM\n"));
1179				return EPERM;
1180			}
1181			if (p1)
1182				PROC_UNLOCK(p1);
1183		}
1184		s = spltty();
1185		if (mode->mode == VT_AUTO) {
1186			scp->smode.mode = VT_AUTO;
1187			scp->proc = NULL;
1188			scp->pid = 0;
1189			DPRINTF(5, ("VT_AUTO, "));
1190			if ((scp == sc->cur_scp) &&
1191			    (sc->unit == sc_console_unit))
1192				cnavailable(sc_consptr, TRUE);
1193			/* were we in the middle of the vty switching process?
1194			 */
1195			if (finish_vt_rel(scp, TRUE, &s) == 0)
1196				DPRINTF(5, ("reset WAIT_REL, "));
1197			if (finish_vt_acq(scp) == 0)
1198				DPRINTF(5, ("reset WAIT_ACQ, "));
1199		} else {
1200			if (!ISSIGVALID(mode->relsig) ||
1201			    !ISSIGVALID(mode->acqsig) ||
1202			    !ISSIGVALID(mode->frsig)) {
1203				splx(s);
1204				DPRINTF(5, ("error EINVAL\n"));
1205				return EINVAL;
1206			}
1207			DPRINTF(5, ("VT_PROCESS %d, ", td->td_proc->p_pid));
1208			bcopy(data, &scp->smode, sizeof(struct vt_mode));
1209			scp->proc = td->td_proc;
1210			scp->pid = scp->proc->p_pid;
1211			if ((scp == sc->cur_scp) &&
1212			    (sc->unit == sc_console_unit))
1213				cnavailable(sc_consptr, FALSE);
1214		}
1215		splx(s);
1216		DPRINTF(5, ("\n"));
1217		return 0;
1218	}
1219
1220	case VT_GETMODE: /* get screen switcher mode */
1221		bcopy(&scp->smode, data, sizeof(struct vt_mode));
1222		return 0;
1223
1224#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1225    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1226	case _IO('v', 4):
1227		ival = IOCPARM_IVAL(data);
1228		data = (caddr_t)&ival;
1229		/* FALLTHROUGH */
1230#endif
1231	case VT_RELDISP: /* screen switcher ioctl */
1232		s = spltty();
1233		/*
1234		 * This must be the current vty which is in the VT_PROCESS
1235		 * switching mode...
1236		 */
1237		if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
1238			splx(s);
1239			return EINVAL;
1240		}
1241		/* ...and this process is controlling it. */
1242		if (scp->proc != td->td_proc) {
1243			splx(s);
1244			return EPERM;
1245		}
1246		error = EINVAL;
1247		switch (*(int *)data) {
1248		case VT_FALSE: /* user refuses to release screen, abort */
1249			if ((error = finish_vt_rel(scp, FALSE, &s)) == 0)
1250				DPRINTF(5,
1251				    ("%s%d: VT_FALSE\n", SC_DRIVER_NAME,
1252					sc->unit));
1253			break;
1254		case VT_TRUE: /* user has released screen, go on */
1255			if ((error = finish_vt_rel(scp, TRUE, &s)) == 0)
1256				DPRINTF(5,
1257				    ("%s%d: VT_TRUE\n", SC_DRIVER_NAME,
1258					sc->unit));
1259			break;
1260		case VT_ACKACQ: /* acquire acknowledged, switch completed */
1261			if ((error = finish_vt_acq(scp)) == 0)
1262				DPRINTF(5,
1263				    ("%s%d: VT_ACKACQ\n", SC_DRIVER_NAME,
1264					sc->unit));
1265			break;
1266		default:
1267			break;
1268		}
1269		splx(s);
1270		return error;
1271
1272	case VT_OPENQRY: /* return free virtual console */
1273		for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
1274			tp = SC_DEV(sc, i);
1275			if (!tty_opened_ns(tp)) {
1276				*(int *)data = i + 1;
1277				return 0;
1278			}
1279		}
1280		return EINVAL;
1281
1282#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1283    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1284	case _IO('v', 5):
1285		ival = IOCPARM_IVAL(data);
1286		data = (caddr_t)&ival;
1287		/* FALLTHROUGH */
1288#endif
1289	case VT_ACTIVATE: /* switch to screen *data */
1290		i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1291		s = spltty();
1292		error = sc_clean_up(sc->cur_scp);
1293		splx(s);
1294		if (error)
1295			return error;
1296		error = sc_switch_scr(sc, i);
1297		return (error);
1298
1299#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1300    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1301	case _IO('v', 6):
1302		ival = IOCPARM_IVAL(data);
1303		data = (caddr_t)&ival;
1304		/* FALLTHROUGH */
1305#endif
1306	case VT_WAITACTIVE: /* wait for switch to occur */
1307		i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
1308		if ((i < sc->first_vty) || (i >= sc->first_vty + sc->vtys))
1309			return EINVAL;
1310		if (i == sc->cur_scp->index)
1311			return 0;
1312		error =
1313		    tsleep(VTY_WCHAN(sc, i), (PZERO + 1) | PCATCH, "waitvt", 0);
1314		return error;
1315
1316	case VT_GETACTIVE: /* get active vty # */
1317		*(int *)data = sc->cur_scp->index + 1;
1318		return 0;
1319
1320	case VT_GETINDEX: /* get this vty # */
1321		*(int *)data = scp->index + 1;
1322		return 0;
1323
1324	case VT_LOCKSWITCH: /* prevent vty switching */
1325		if ((*(int *)data) & 0x01)
1326			sc->flags |= SC_SCRN_VTYLOCK;
1327		else
1328			sc->flags &= ~SC_SCRN_VTYLOCK;
1329		return 0;
1330
1331	case KDENABIO: /* allow io operations */
1332		error = priv_check(td, PRIV_IO);
1333		if (error != 0)
1334			return error;
1335		error = securelevel_gt(td->td_ucred, 0);
1336		if (error != 0)
1337			return error;
1338#ifdef __i386__
1339		td->td_frame->tf_eflags |= PSL_IOPL;
1340#elif defined(__amd64__)
1341		td->td_frame->tf_rflags |= PSL_IOPL;
1342#endif
1343		return 0;
1344
1345	case KDDISABIO: /* disallow io operations (default) */
1346#ifdef __i386__
1347		td->td_frame->tf_eflags &= ~PSL_IOPL;
1348#elif defined(__amd64__)
1349		td->td_frame->tf_rflags &= ~PSL_IOPL;
1350#endif
1351		return 0;
1352
1353#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1354    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1355	case _IO('K', 20):
1356		ival = IOCPARM_IVAL(data);
1357		data = (caddr_t)&ival;
1358		/* FALLTHROUGH */
1359#endif
1360	case KDSKBSTATE: /* set keyboard state (locks) */
1361		if (*(int *)data & ~LOCK_MASK)
1362			return EINVAL;
1363		scp->status &= ~LOCK_MASK;
1364		scp->status |= *(int *)data;
1365		if (scp == sc->cur_scp)
1366			update_kbd_state(scp, scp->status, LOCK_MASK);
1367		return 0;
1368
1369	case KDGKBSTATE: /* get keyboard state (locks) */
1370		if (scp == sc->cur_scp)
1371			save_kbd_state(scp);
1372		*(int *)data = scp->status & LOCK_MASK;
1373		return 0;
1374
1375	case KDGETREPEAT: /* get keyboard repeat & delay rates */
1376	case KDSETREPEAT: /* set keyboard repeat & delay rates (new) */
1377		error = kbdd_ioctl(sc->kbd, cmd, data);
1378		if (error == ENOIOCTL)
1379			error = ENODEV;
1380		return error;
1381
1382#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1383    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1384	case _IO('K', 67):
1385		ival = IOCPARM_IVAL(data);
1386		data = (caddr_t)&ival;
1387		/* FALLTHROUGH */
1388#endif
1389	case KDSETRAD: /* set keyboard repeat & delay rates (old) */
1390		if (*(int *)data & ~0x7f)
1391			return EINVAL;
1392		error = kbdd_ioctl(sc->kbd, KDSETRAD, data);
1393		if (error == ENOIOCTL)
1394			error = ENODEV;
1395		return error;
1396
1397#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1398    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1399	case _IO('K', 7):
1400		ival = IOCPARM_IVAL(data);
1401		data = (caddr_t)&ival;
1402		/* FALLTHROUGH */
1403#endif
1404	case KDSKBMODE: /* set keyboard mode */
1405		switch (*(int *)data) {
1406		case K_XLATE: /* switch to XLT ascii mode */
1407		case K_RAW: /* switch to RAW scancode mode */
1408		case K_CODE: /* switch to CODE mode */
1409			scp->kbd_mode = *(int *)data;
1410			if (scp == sc->cur_scp)
1411				(void)kbdd_ioctl(sc->kbd, KDSKBMODE, data);
1412			return 0;
1413		default:
1414			return EINVAL;
1415		}
1416		/* NOT REACHED */
1417
1418	case KDGKBMODE: /* get keyboard mode */
1419		*(int *)data = scp->kbd_mode;
1420		return 0;
1421
1422	case KDGKBINFO:
1423		error = kbdd_ioctl(sc->kbd, cmd, data);
1424		if (error == ENOIOCTL)
1425			error = ENODEV;
1426		return error;
1427
1428#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1429    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1430	case _IO('K', 8):
1431		ival = IOCPARM_IVAL(data);
1432		data = (caddr_t)&ival;
1433		/* FALLTHROUGH */
1434#endif
1435	case KDMKTONE: /* sound the bell */
1436		if (*(int *)data)
1437			sc_bell(scp, (*(int *)data) & 0xffff,
1438			    (((*(int *)data) >> 16) & 0xffff) * hz / 1000);
1439		else
1440			sc_bell(scp, scp->bell_pitch, scp->bell_duration);
1441		return 0;
1442
1443#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1444    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1445	case _IO('K', 63):
1446		ival = IOCPARM_IVAL(data);
1447		data = (caddr_t)&ival;
1448		/* FALLTHROUGH */
1449#endif
1450	case KIOCSOUND: /* make tone (*data) hz */
1451		if (scp == sc->cur_scp) {
1452			if (*(int *)data)
1453				return sc_tone(*(int *)data);
1454			else
1455				return sc_tone(0);
1456		}
1457		return 0;
1458
1459	case KDGKBTYPE: /* get keyboard type */
1460		error = kbdd_ioctl(sc->kbd, cmd, data);
1461		if (error == ENOIOCTL) {
1462			/* always return something? XXX */
1463			*(int *)data = 0;
1464		}
1465		return 0;
1466
1467#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1468    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1469	case _IO('K', 66):
1470		ival = IOCPARM_IVAL(data);
1471		data = (caddr_t)&ival;
1472		/* FALLTHROUGH */
1473#endif
1474	case KDSETLED: /* set keyboard LED status */
1475		if (*(int *)data & ~LED_MASK) /* FIXME: LOCK_MASK? */
1476			return EINVAL;
1477		scp->status &= ~LED_MASK;
1478		scp->status |= *(int *)data;
1479		if (scp == sc->cur_scp)
1480			update_kbd_leds(scp, scp->status);
1481		return 0;
1482
1483	case KDGETLED: /* get keyboard LED status */
1484		if (scp == sc->cur_scp)
1485			save_kbd_state(scp);
1486		*(int *)data = scp->status & LED_MASK;
1487		return 0;
1488
1489	case KBADDKBD: /* add/remove keyboard to/from mux */
1490	case KBRELKBD:
1491		error = kbdd_ioctl(sc->kbd, cmd, data);
1492		if (error == ENOIOCTL)
1493			error = ENODEV;
1494		return error;
1495
1496#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1497    defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1498	case _IO('c', 110):
1499		ival = IOCPARM_IVAL(data);
1500		data = (caddr_t)&ival;
1501		/* FALLTHROUGH */
1502#endif
1503	case CONS_SETKBD: /* set the new keyboard */
1504	{
1505		keyboard_t *newkbd;
1506
1507		s = spltty();
1508		newkbd = kbd_get_keyboard(*(int *)data);
1509		if (newkbd == NULL) {
1510			splx(s);
1511			return EINVAL;
1512		}
1513		error = 0;
1514		if (sc->kbd != newkbd) {
1515			i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
1516			    (void *)&sc->kbd, sckbdevent, sc);
1517			/* i == newkbd->kb_index */
1518			if (i >= 0) {
1519				if (sc->kbd != NULL) {
1520					save_kbd_state(sc->cur_scp);
1521					kbd_release(
1522					    sc->kbd, (void *)&sc->kbd);
1523				}
1524				sc->kbd =
1525				    kbd_get_keyboard(i); /* sc->kbd == newkbd */
1526				(void)kbdd_ioctl(sc->kbd, KDSKBMODE,
1527				    (caddr_t)&sc->cur_scp->kbd_mode);
1528				update_kbd_state(sc->cur_scp,
1529				    sc->cur_scp->status, LOCK_MASK);
1530			} else {
1531				error = EPERM; /* XXX */
1532			}
1533		}
1534		splx(s);
1535		return error;
1536	}
1537
1538	case CONS_RELKBD: /* release the current keyboard */
1539		s = spltty();
1540		error = 0;
1541		if (sc->kbd != NULL) {
1542			save_kbd_state(sc->cur_scp);
1543			error = kbd_release(sc->kbd, (void *)&sc->kbd);
1544			if (error == 0)
1545				sc->kbd = NULL;
1546		}
1547		splx(s);
1548		return error;
1549
1550	case CONS_GETTERM: /* get the current terminal emulator info */
1551	{
1552		sc_term_sw_t *sw;
1553
1554		if (((term_info_t *)data)->ti_index == 0) {
1555			sw = scp->tsw;
1556		} else {
1557			sw = sc_term_match_by_number(
1558			    ((term_info_t *)data)->ti_index);
1559		}
1560		if (sw != NULL) {
1561			strncpy(((term_info_t *)data)->ti_name, sw->te_name,
1562			    sizeof(((term_info_t *)data)->ti_name));
1563			strncpy(((term_info_t *)data)->ti_desc, sw->te_desc,
1564			    sizeof(((term_info_t *)data)->ti_desc));
1565			((term_info_t *)data)->ti_flags = 0;
1566			return 0;
1567		} else {
1568			((term_info_t *)data)->ti_name[0] = '\0';
1569			((term_info_t *)data)->ti_desc[0] = '\0';
1570			((term_info_t *)data)->ti_flags = 0;
1571			return EINVAL;
1572		}
1573	}
1574
1575	case CONS_SETTERM: /* set the current terminal emulator */
1576		s = spltty();
1577		error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
1578		/* FIXME: what if scp == sc_console! XXX */
1579		splx(s);
1580		return error;
1581
1582	case GIO_SCRNMAP: /* get output translation table */
1583		bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
1584		return 0;
1585
1586	case PIO_SCRNMAP: /* set output translation table */
1587		bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
1588		for (i = 0; i < sizeof(sc->scr_map); i++) {
1589			sc->scr_rmap[sc->scr_map[i]] = i;
1590		}
1591		return 0;
1592
1593	case GIO_KEYMAP: /* get keyboard translation table */
1594	case PIO_KEYMAP: /* set keyboard translation table */
1595	case GIO_DEADKEYMAP: /* get accent key translation table */
1596	case PIO_DEADKEYMAP: /* set accent key translation table */
1597#ifdef COMPAT_FREEBSD13
1598	case OGIO_KEYMAP: /* get keyboard translation table (compat) */
1599	case OPIO_KEYMAP: /* set keyboard translation table (compat) */
1600	case OGIO_DEADKEYMAP: /* get accent key translation table (compat) */
1601	case OPIO_DEADKEYMAP: /* set accent key translation table (compat) */
1602#endif /* COMPAT_FREEBSD13 */
1603	case GETFKEY: /* get function key string */
1604	case SETFKEY: /* set function key string */
1605		error = kbdd_ioctl(sc->kbd, cmd, data);
1606		if (error == ENOIOCTL)
1607			error = ENODEV;
1608		return error;
1609
1610#ifndef SC_NO_FONT_LOADING
1611
1612	case PIO_FONT8x8: /* set 8x8 dot font */
1613		if (!ISFONTAVAIL(sc->adp->va_flags))
1614			return ENXIO;
1615		bcopy(data, sc->font_8, 8 * 256);
1616		sc->fonts_loaded |= FONT_8;
1617		/*
1618		 * FONT KLUDGE
1619		 * Always use the font page #0. XXX
1620		 * Don't load if the current font size is not 8x8.
1621		 */
1622		if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
1623			sc_load_font(sc->cur_scp, 0, 8, 8, sc->font_8, 0, 256);
1624		return 0;
1625
1626	case GIO_FONT8x8: /* get 8x8 dot font */
1627		if (!ISFONTAVAIL(sc->adp->va_flags))
1628			return ENXIO;
1629		if (sc->fonts_loaded & FONT_8) {
1630			bcopy(sc->font_8, data, 8 * 256);
1631			return 0;
1632		} else
1633			return ENXIO;
1634
1635	case PIO_FONT8x14: /* set 8x14 dot font */
1636		if (!ISFONTAVAIL(sc->adp->va_flags))
1637			return ENXIO;
1638		bcopy(data, sc->font_14, 14 * 256);
1639		sc->fonts_loaded |= FONT_14;
1640		/*
1641		 * FONT KLUDGE
1642		 * Always use the font page #0. XXX
1643		 * Don't load if the current font size is not 8x14.
1644		 */
1645		if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 14) &&
1646		    (sc->cur_scp->font_size < 16))
1647			sc_load_font(
1648			    sc->cur_scp, 0, 14, 8, sc->font_14, 0, 256);
1649		return 0;
1650
1651	case GIO_FONT8x14: /* get 8x14 dot font */
1652		if (!ISFONTAVAIL(sc->adp->va_flags))
1653			return ENXIO;
1654		if (sc->fonts_loaded & FONT_14) {
1655			bcopy(sc->font_14, data, 14 * 256);
1656			return 0;
1657		} else
1658			return ENXIO;
1659
1660	case PIO_FONT8x16: /* set 8x16 dot font */
1661		if (!ISFONTAVAIL(sc->adp->va_flags))
1662			return ENXIO;
1663		bcopy(data, sc->font_16, 16 * 256);
1664		sc->fonts_loaded |= FONT_16;
1665		/*
1666		 * FONT KLUDGE
1667		 * Always use the font page #0. XXX
1668		 * Don't load if the current font size is not 8x16.
1669		 */
1670		if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
1671			sc_load_font(
1672			    sc->cur_scp, 0, 16, 8, sc->font_16, 0, 256);
1673		return 0;
1674
1675	case GIO_FONT8x16: /* get 8x16 dot font */
1676		if (!ISFONTAVAIL(sc->adp->va_flags))
1677			return ENXIO;
1678		if (sc->fonts_loaded & FONT_16) {
1679			bcopy(sc->font_16, data, 16 * 256);
1680			return 0;
1681		} else
1682			return ENXIO;
1683
1684#endif /* SC_NO_FONT_LOADING */
1685
1686	default:
1687		break;
1688	}
1689
1690	return (ENOIOCTL);
1691}
1692
1693static int
1694consolectl_ioctl(
1695    struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
1696{
1697
1698	return sctty_ioctl(dev->si_drv1, cmd, data, td);
1699}
1700
1701static int
1702consolectl_close(struct cdev *dev, int flags, int mode, struct thread *td)
1703{
1704#ifndef SC_NO_SYSMOUSE
1705	mouse_info_t info;
1706	memset(&info, 0, sizeof(info));
1707	info.operation = MOUSE_ACTION;
1708
1709	/*
1710	 * Make sure all buttons are released when moused and other
1711	 * console daemons exit, so that no buttons are left pressed.
1712	 */
1713	(void)sctty_ioctl(dev->si_drv1, CONS_MOUSECTL, (caddr_t)&info, td);
1714#endif
1715	return (0);
1716}
1717
1718static void
1719sc_cnprobe(struct consdev *cp)
1720{
1721	int unit;
1722	int flags;
1723
1724	if (!vty_enabled(VTY_SC)) {
1725		cp->cn_pri = CN_DEAD;
1726		return;
1727	}
1728
1729	cp->cn_pri = sc_get_cons_priority(&unit, &flags);
1730
1731	/* a video card is always required */
1732	if (!scvidprobe(unit, flags, TRUE))
1733		cp->cn_pri = CN_DEAD;
1734
1735	/* syscons will become console even when there is no keyboard */
1736	sckbdprobe(unit, flags, TRUE);
1737
1738	if (cp->cn_pri == CN_DEAD)
1739		return;
1740
1741	/* initialize required fields */
1742	strcpy(cp->cn_name, "ttyv0");
1743}
1744
1745static void
1746sc_cninit(struct consdev *cp)
1747{
1748	int unit;
1749	int flags;
1750
1751	sc_get_cons_priority(&unit, &flags);
1752	scinit(unit, flags | SC_KERNEL_CONSOLE);
1753	sc_console_unit = unit;
1754	sc_console = sc_get_stat(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
1755	sc_consptr = cp;
1756}
1757
1758static void
1759sc_cnterm(struct consdev *cp)
1760{
1761	void *ts;
1762	int i;
1763
1764	/* we are not the kernel console any more, release everything */
1765
1766	if (sc_console_unit < 0)
1767		return; /* shouldn't happen */
1768
1769#if 0 /* XXX */
1770    sc_clear_screen(sc_console);
1771    sccnupdate(sc_console);
1772#endif
1773
1774	if (sc_ktsw != NULL) {
1775		for (i = 0; i <= mp_maxid; i++) {
1776			ts = sc_kts[i];
1777			sc_kts[i] = NULL;
1778			(*sc_ktsw->te_term)(sc_console, &ts);
1779			free(ts, M_DEVBUF);
1780		}
1781		sc_ktsw = NULL;
1782	}
1783	scterm(sc_console_unit, SC_KERNEL_CONSOLE);
1784	sc_console_unit = -1;
1785	sc_console = NULL;
1786}
1787
1788static void sccnclose(sc_softc_t *sc, struct sc_cnstate *sp);
1789static int sc_cngetc_locked(struct sc_cnstate *sp);
1790static void sccnkbdlock(sc_softc_t *sc, struct sc_cnstate *sp);
1791static void sccnkbdunlock(sc_softc_t *sc, struct sc_cnstate *sp);
1792static void sccnopen(sc_softc_t *sc, struct sc_cnstate *sp, int flags);
1793static void sccnscrlock(sc_softc_t *sc, struct sc_cnstate *sp);
1794static void sccnscrunlock(sc_softc_t *sc, struct sc_cnstate *sp);
1795
1796static void
1797sccnkbdlock(sc_softc_t *sc, struct sc_cnstate *sp)
1798{
1799	/*
1800	 * Locking method: hope for the best.
1801	 * The keyboard is supposed to be Giant locked.  We can't handle that
1802	 * in general.  The kdb_active case here is not safe, and we will
1803	 * proceed without the lock in all cases.
1804	 */
1805	sp->kbd_locked = !kdb_active && mtx_trylock(&Giant);
1806}
1807
1808static void
1809sccnkbdunlock(sc_softc_t *sc, struct sc_cnstate *sp)
1810{
1811	if (sp->kbd_locked)
1812		mtx_unlock(&Giant);
1813	sp->kbd_locked = FALSE;
1814}
1815
1816static void
1817sccnscrlock(sc_softc_t *sc, struct sc_cnstate *sp)
1818{
1819	int retries;
1820
1821	/**
1822	 * Locking method:
1823	 * - if kdb_active and video_mtx is not owned by anyone, then lock
1824	 *   by kdb remaining active
1825	 * - if !kdb_active, try to acquire video_mtx without blocking or
1826	 *   recursing; if we get it then it works normally.
1827	 * Note that video_mtx is especially unusable if we already own it,
1828	 * since then it is protecting something and syscons is not reentrant
1829	 * enough to ignore the protection even in the kdb_active case.
1830	 */
1831	if (kdb_active) {
1832		sp->kdb_locked = sc->video_mtx.mtx_lock == MTX_UNOWNED ||
1833		    SCHEDULER_STOPPED();
1834		sp->mtx_locked = FALSE;
1835	} else {
1836		sp->kdb_locked = FALSE;
1837		for (retries = 0; retries < 1000; retries++) {
1838			sp->mtx_locked = mtx_trylock_spin_flags(
1839					     &sc->video_mtx, MTX_QUIET) != 0;
1840			if (SCHEDULER_STOPPED()) {
1841				sp->kdb_locked = TRUE;
1842				sp->mtx_locked = FALSE;
1843				break;
1844			}
1845			if (sp->mtx_locked)
1846				break;
1847			DELAY(1);
1848		}
1849	}
1850}
1851
1852static void
1853sccnscrunlock(sc_softc_t *sc, struct sc_cnstate *sp)
1854{
1855	if (sp->mtx_locked)
1856		mtx_unlock_spin(&sc->video_mtx);
1857	sp->mtx_locked = sp->kdb_locked = FALSE;
1858}
1859
1860static void
1861sccnopen(sc_softc_t *sc, struct sc_cnstate *sp, int flags)
1862{
1863	int kbd_mode;
1864
1865	/* assert(sc_console_unit >= 0) */
1866
1867	sp->kbd_opened = FALSE;
1868	sp->scr_opened = FALSE;
1869	sp->kbd_locked = FALSE;
1870
1871	/* Opening the keyboard is optional. */
1872	if (!(flags & 1) || sc->kbd == NULL)
1873		goto over_keyboard;
1874
1875	sccnkbdlock(sc, sp);
1876
1877	/*
1878	 * Make sure the keyboard is accessible even when the kbd device
1879	 * driver is disabled.
1880	 */
1881	kbdd_enable(sc->kbd);
1882
1883	/* Switch the keyboard to console mode (K_XLATE, polled) on all scp's.
1884	 */
1885	kbd_mode = K_XLATE;
1886	(void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&kbd_mode);
1887	sc->kbd_open_level++;
1888	kbdd_poll(sc->kbd, TRUE);
1889
1890	sp->kbd_opened = TRUE;
1891over_keyboard:;
1892
1893	/* The screen is opened iff locking it succeeds. */
1894	sccnscrlock(sc, sp);
1895	if (!sp->kdb_locked && !sp->mtx_locked)
1896		return;
1897	sp->scr_opened = TRUE;
1898
1899	/* The screen switch is optional. */
1900	if (!(flags & 2))
1901		return;
1902
1903	/* try to switch to the kernel console screen */
1904	if (!cold && sc->cur_scp->index != sc_console->index &&
1905	    sc->cur_scp->smode.mode == VT_AUTO &&
1906	    sc_console->smode.mode == VT_AUTO)
1907		sc_switch_scr(sc, sc_console->index);
1908}
1909
1910static void
1911sccnclose(sc_softc_t *sc, struct sc_cnstate *sp)
1912{
1913	sp->scr_opened = FALSE;
1914	sccnscrunlock(sc, sp);
1915
1916	if (!sp->kbd_opened)
1917		return;
1918
1919	/* Restore keyboard mode (for the current, possibly-changed scp). */
1920	kbdd_poll(sc->kbd, FALSE);
1921	if (--sc->kbd_open_level == 0)
1922		(void)kbdd_ioctl(
1923		    sc->kbd, KDSKBMODE, (caddr_t)&sc->cur_scp->kbd_mode);
1924
1925	kbdd_disable(sc->kbd);
1926	sp->kbd_opened = FALSE;
1927	sccnkbdunlock(sc, sp);
1928}
1929
1930/*
1931 * Grabbing switches the screen and keyboard focus to sc_console and the
1932 * keyboard mode to (K_XLATE, polled).  Only switching to polled mode is
1933 * essential (for preventing the interrupt handler from eating input
1934 * between polls).  Focus is part of the UI, and the other switches are
1935 * work just was well when they are done on every entry and exit.
1936 *
1937 * Screen switches while grabbed are supported, and to maintain focus for
1938 * this ungrabbing and closing only restore the polling state and then
1939 * the keyboard mode if on the original screen.
1940 */
1941
1942static void
1943sc_cngrab(struct consdev *cp)
1944{
1945	sc_softc_t *sc;
1946	int lev;
1947
1948	sc = sc_console->sc;
1949	lev = atomic_fetchadd_int(&sc->grab_level, 1);
1950	if (lev >= 0 && lev < 2) {
1951		sccnopen(sc, &sc->grab_state[lev], 1 | 2);
1952		sccnscrunlock(sc, &sc->grab_state[lev]);
1953		sccnkbdunlock(sc, &sc->grab_state[lev]);
1954	}
1955}
1956
1957static void
1958sc_cnungrab(struct consdev *cp)
1959{
1960	sc_softc_t *sc;
1961	int lev;
1962
1963	sc = sc_console->sc;
1964	lev = atomic_load_acq_int(&sc->grab_level) - 1;
1965	if (lev >= 0 && lev < 2) {
1966		sccnkbdlock(sc, &sc->grab_state[lev]);
1967		sccnscrlock(sc, &sc->grab_state[lev]);
1968		sccnclose(sc, &sc->grab_state[lev]);
1969	}
1970	atomic_add_int(&sc->grab_level, -1);
1971}
1972
1973static char sc_cnputc_log[0x1000];
1974static u_int sc_cnputc_loghead;
1975static u_int sc_cnputc_logtail;
1976
1977static void
1978sc_cnputc(struct consdev *cd, int c)
1979{
1980	struct sc_cnstate st;
1981	u_char buf[1];
1982	scr_stat *scp = sc_console;
1983	void *oldts, *ts;
1984	struct sc_term_sw *oldtsw;
1985#ifndef SC_NO_HISTORY
1986#if 0
1987    struct tty *tp;
1988#endif
1989#endif /* !SC_NO_HISTORY */
1990	u_int head;
1991	int s;
1992
1993	/* assert(sc_console != NULL) */
1994
1995	sccnopen(scp->sc, &st, 0);
1996
1997	/*
1998	 * Log the output.
1999	 *
2000	 * In the unlocked case, the logging is intentionally only
2001	 * perfectly atomic for the indexes.
2002	 */
2003	head = atomic_fetchadd_int(&sc_cnputc_loghead, 1);
2004	sc_cnputc_log[head % sizeof(sc_cnputc_log)] = c;
2005
2006	/*
2007	 * If we couldn't open, do special reentrant output and return to defer
2008	 * normal output.
2009	 */
2010	if (!st.scr_opened) {
2011		ec_putc(c);
2012		return;
2013	}
2014
2015#ifndef SC_NO_HISTORY
2016	if (scp == scp->sc->cur_scp && scp->status & SLKED) {
2017		scp->status &= ~SLKED;
2018		update_kbd_state(scp, scp->status, SLKED);
2019		if (scp->status & BUFFER_SAVED) {
2020			if (!sc_hist_restore(scp))
2021				sc_remove_cutmarking(scp);
2022			scp->status &= ~BUFFER_SAVED;
2023			scp->status |= CURSOR_ENABLED;
2024			sc_draw_cursor_image(scp);
2025		}
2026#if 0
2027	/*
2028	 * XXX: Now that TTY's have their own locks, we cannot process
2029	 * any data after disabling scroll lock. cnputs already holds a
2030	 * spinlock.
2031	 */
2032	tp = SC_DEV(scp->sc, scp->index);
2033	/* XXX "tp" can be NULL */
2034	tty_lock(tp);
2035	if (tty_opened(tp))
2036	    sctty_outwakeup(tp);
2037	tty_unlock(tp);
2038#endif
2039	}
2040#endif /* !SC_NO_HISTORY */
2041
2042	/* Play any output still in the log (our char may already be done). */
2043	while (sc_cnputc_logtail != atomic_load_acq_int(&sc_cnputc_loghead)) {
2044		buf[0] =
2045		    sc_cnputc_log[sc_cnputc_logtail++ % sizeof(sc_cnputc_log)];
2046		if (atomic_load_acq_int(&sc_cnputc_loghead) -
2047			sc_cnputc_logtail >=
2048		    sizeof(sc_cnputc_log))
2049			continue;
2050		/* Console output has a per-CPU "input" state.  Switch for it.
2051		 */
2052		ts = sc_kts[curcpu];
2053		if (ts != NULL) {
2054			oldtsw = scp->tsw;
2055			oldts = scp->ts;
2056			scp->tsw = sc_ktsw;
2057			scp->ts = ts;
2058			(*scp->tsw->te_sync)(scp);
2059		} else {
2060			/* Only 1 tsw early.  Switch only its attr. */
2061			(*scp->tsw->te_default_attr)(
2062			    scp, sc_kattrtab[curcpu], SC_KERNEL_CONS_REV_ATTR);
2063		}
2064		sc_puts(scp, buf, 1);
2065		if (ts != NULL) {
2066			scp->tsw = oldtsw;
2067			scp->ts = oldts;
2068			(*scp->tsw->te_sync)(scp);
2069		} else {
2070			(*scp->tsw->te_default_attr)(
2071			    scp, SC_KERNEL_CONS_ATTR, SC_KERNEL_CONS_REV_ATTR);
2072		}
2073	}
2074
2075	s = spltty(); /* block sckbdevent and scrn_timer */
2076	sccnupdate(scp);
2077	splx(s);
2078	sccnclose(scp->sc, &st);
2079}
2080
2081static int
2082sc_cngetc(struct consdev *cd)
2083{
2084	struct sc_cnstate st;
2085	int c, s;
2086
2087	/* assert(sc_console != NULL) */
2088	sccnopen(sc_console->sc, &st, 1);
2089	s = spltty(); /* block sckbdevent and scrn_timer while we poll */
2090	if (!st.kbd_opened) {
2091		splx(s);
2092		sccnclose(sc_console->sc, &st);
2093		return -1; /* means no keyboard since we fudged the locking */
2094	}
2095	c = sc_cngetc_locked(&st);
2096	splx(s);
2097	sccnclose(sc_console->sc, &st);
2098	return c;
2099}
2100
2101static int
2102sc_cngetc_locked(struct sc_cnstate *sp)
2103{
2104	static struct fkeytab fkey;
2105	static int fkeycp;
2106	scr_stat *scp;
2107	const u_char *p;
2108	int c;
2109
2110	/*
2111	 * Stop the screen saver and update the screen if necessary.
2112	 * What if we have been running in the screen saver code... XXX
2113	 */
2114	if (sp->scr_opened)
2115		sc_touch_scrn_saver();
2116	scp = sc_console->sc->cur_scp; /* XXX */
2117	if (sp->scr_opened)
2118		sccnupdate(scp);
2119
2120	if (fkeycp < fkey.len)
2121		return fkey.str[fkeycp++];
2122
2123	c = scgetc(scp->sc, SCGETC_CN | SCGETC_NONBLOCK, sp);
2124
2125	switch (KEYFLAGS(c)) {
2126	case 0: /* normal char */
2127		return KEYCHAR(c);
2128	case FKEY: /* function key */
2129		p = (*scp->tsw->te_fkeystr)(scp, c);
2130		if (p != NULL) {
2131			fkey.len = strlen(p);
2132			bcopy(p, fkey.str, fkey.len);
2133			fkeycp = 1;
2134			return fkey.str[0];
2135		}
2136		p = kbdd_get_fkeystr(
2137		    scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
2138		fkey.len = fkeycp;
2139		if ((p != NULL) && (fkey.len > 0)) {
2140			bcopy(p, fkey.str, fkey.len);
2141			fkeycp = 1;
2142			return fkey.str[0];
2143		}
2144		return c; /* XXX */
2145	case NOKEY:
2146	case ERRKEY:
2147	default:
2148		return -1;
2149	}
2150	/* NOT REACHED */
2151}
2152
2153static void
2154sccnupdate(scr_stat *scp)
2155{
2156	/* this is a cut-down version of scrn_timer()... */
2157
2158	if (suspend_in_progress || scp->sc->font_loading_in_progress)
2159		return;
2160
2161	if (kdb_active || KERNEL_PANICKED() || shutdown_in_progress) {
2162		sc_touch_scrn_saver();
2163	} else if (scp != scp->sc->cur_scp) {
2164		return;
2165	}
2166
2167	if (!run_scrn_saver)
2168		scp->sc->flags &= ~SC_SCRN_IDLE;
2169#ifdef DEV_SPLASH
2170	if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
2171		if (scp->sc->flags & SC_SCRN_BLANKED)
2172			stop_scrn_saver(scp->sc, current_saver);
2173#endif
2174
2175	if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress ||
2176	    scp->sc->switch_in_progress)
2177		return;
2178	/*
2179	 * FIXME: unlike scrn_timer(), we call scrn_update() from here even
2180	 * when write_in_progress is non-zero.  XXX
2181	 */
2182
2183	if (!ISGRAPHSC(scp) && !(scp->sc->flags & SC_SCRN_BLANKED))
2184		scrn_update(scp, TRUE);
2185}
2186
2187static void
2188scrn_timer(void *arg)
2189{
2190	static time_t kbd_time_stamp = 0;
2191	sc_softc_t *sc;
2192	scr_stat *scp;
2193	int again, rate;
2194	int kbdidx;
2195
2196	again = (arg != NULL);
2197	if (arg != NULL)
2198		sc = (sc_softc_t *)arg;
2199	else if (sc_console != NULL)
2200		sc = sc_console->sc;
2201	else
2202		return;
2203
2204	/* find the vty to update */
2205	scp = sc->cur_scp;
2206
2207	/* don't do anything when we are performing some I/O operations */
2208	if (suspend_in_progress || sc->font_loading_in_progress)
2209		goto done;
2210
2211	if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
2212		/* try to allocate a keyboard automatically */
2213		if (kbd_time_stamp != time_uptime) {
2214			kbd_time_stamp = time_uptime;
2215			kbdidx = sc_allocate_keyboard(sc, -1);
2216			if (kbdidx >= 0) {
2217				sc->kbd = kbd_get_keyboard(kbdidx);
2218				(void)kbdd_ioctl(sc->kbd, KDSKBMODE,
2219				    (caddr_t)&sc->cur_scp->kbd_mode);
2220				update_kbd_state(sc->cur_scp,
2221				    sc->cur_scp->status, LOCK_MASK);
2222			}
2223		}
2224	}
2225
2226	/* should we stop the screen saver? */
2227	if (kdb_active || KERNEL_PANICKED() || shutdown_in_progress)
2228		sc_touch_scrn_saver();
2229	if (run_scrn_saver) {
2230		if (time_uptime > sc->scrn_time_stamp + scrn_blank_time)
2231			sc->flags |= SC_SCRN_IDLE;
2232		else
2233			sc->flags &= ~SC_SCRN_IDLE;
2234	} else {
2235		sc->scrn_time_stamp = time_uptime;
2236		sc->flags &= ~SC_SCRN_IDLE;
2237		if (scrn_blank_time > 0)
2238			run_scrn_saver = TRUE;
2239	}
2240#ifdef DEV_SPLASH
2241	if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
2242		if (sc->flags & SC_SCRN_BLANKED)
2243			stop_scrn_saver(sc, current_saver);
2244#endif
2245
2246	/* should we just return ? */
2247	if (sc->blink_in_progress || sc->switch_in_progress ||
2248	    sc->write_in_progress)
2249		goto done;
2250
2251	/* Update the screen */
2252	scp = sc->cur_scp; /* cur_scp may have changed... */
2253	if (!ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
2254		scrn_update(scp, TRUE);
2255
2256#ifdef DEV_SPLASH
2257	/* should we activate the screen saver? */
2258	if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
2259		if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
2260			(*current_saver)(sc, TRUE);
2261#endif
2262
2263done:
2264	if (again) {
2265		/*
2266		 * Use reduced "refresh" rate if we are in graphics and that is
2267		 * not a graphical screen saver.  In such case we just have
2268		 * nothing to do.
2269		 */
2270		if (ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
2271			rate = 2;
2272		else
2273			rate = 30;
2274		callout_reset_sbt(
2275		    &sc->ctimeout, SBT_1S / rate, 0, scrn_timer, sc, C_PREL(1));
2276	}
2277}
2278
2279static int
2280and_region(int *s1, int *e1, int s2, int e2)
2281{
2282	if (*e1 < s2 || e2 < *s1)
2283		return FALSE;
2284	*s1 = imax(*s1, s2);
2285	*e1 = imin(*e1, e2);
2286	return TRUE;
2287}
2288
2289static void
2290scrn_update(scr_stat *scp, int show_cursor)
2291{
2292	int start;
2293	int end;
2294	int s;
2295	int e;
2296
2297	/* assert(scp == scp->sc->cur_scp) */
2298
2299	SC_VIDEO_LOCK(scp->sc);
2300
2301#ifndef SC_NO_CUTPASTE
2302	/* remove the previous mouse pointer image if necessary */
2303	if (scp->status & MOUSE_VISIBLE) {
2304		s = scp->mouse_pos;
2305		e = scp->mouse_pos + scp->xsize + 1;
2306		if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN)) ||
2307		    and_region(&s, &e, scp->start, scp->end) ||
2308		    ((scp->status & CURSOR_ENABLED) &&
2309			(scp->cursor_pos != scp->cursor_oldpos) &&
2310			(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos) ||
2311			    and_region(&s, &e, scp->cursor_oldpos,
2312				scp->cursor_oldpos)))) {
2313			sc_remove_mouse_image(scp);
2314			if (scp->end >= scp->xsize * scp->ysize)
2315				scp->end = scp->xsize * scp->ysize - 1;
2316		}
2317	}
2318#endif /* !SC_NO_CUTPASTE */
2319
2320#if 1
2321	/* debug: XXX */
2322	if (scp->end >= scp->xsize * scp->ysize) {
2323		printf("scrn_update(): scp->end %d > size_of_screen!!\n",
2324		    scp->end);
2325		scp->end = scp->xsize * scp->ysize - 1;
2326	}
2327	if (scp->start < 0) {
2328		printf("scrn_update(): scp->start %d < 0\n", scp->start);
2329		scp->start = 0;
2330	}
2331#endif
2332
2333	/* update screen image */
2334	if (scp->start <= scp->end) {
2335		if (scp->mouse_cut_end >= 0) {
2336			/* there is a marked region for cut & paste */
2337			if (scp->mouse_cut_start <= scp->mouse_cut_end) {
2338				start = scp->mouse_cut_start;
2339				end = scp->mouse_cut_end;
2340			} else {
2341				start = scp->mouse_cut_end;
2342				end = scp->mouse_cut_start - 1;
2343			}
2344			s = start;
2345			e = end;
2346			/* does the cut-mark region overlap with the update
2347			 * region? */
2348			if (and_region(&s, &e, scp->start, scp->end)) {
2349				(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
2350				s = 0;
2351				e = start - 1;
2352				if (and_region(&s, &e, scp->start, scp->end))
2353					(*scp->rndr->draw)(
2354					    scp, s, e - s + 1, FALSE);
2355				s = end + 1;
2356				e = scp->xsize * scp->ysize - 1;
2357				if (and_region(&s, &e, scp->start, scp->end))
2358					(*scp->rndr->draw)(
2359					    scp, s, e - s + 1, FALSE);
2360			} else {
2361				(*scp->rndr->draw)(scp, scp->start,
2362				    scp->end - scp->start + 1, FALSE);
2363			}
2364		} else {
2365			(*scp->rndr->draw)(
2366			    scp, scp->start, scp->end - scp->start + 1, FALSE);
2367		}
2368	}
2369
2370	/* we are not to show the cursor and the mouse pointer... */
2371	if (!show_cursor) {
2372		scp->end = 0;
2373		scp->start = scp->xsize * scp->ysize - 1;
2374		SC_VIDEO_UNLOCK(scp->sc);
2375		return;
2376	}
2377
2378	/* update cursor image */
2379	if (scp->status & CURSOR_ENABLED) {
2380		s = scp->start;
2381		e = scp->end;
2382		/* did cursor move since last time ? */
2383		if (scp->cursor_pos != scp->cursor_oldpos) {
2384			/* do we need to remove old cursor image ? */
2385			if (!and_region(
2386				&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
2387				sc_remove_cursor_image(scp);
2388			sc_draw_cursor_image(scp);
2389		} else {
2390			if (and_region(
2391				&s, &e, scp->cursor_pos, scp->cursor_pos))
2392				/* cursor didn't move, but has been overwritten
2393				 */
2394				sc_draw_cursor_image(scp);
2395			else if (scp->curs_attr.flags & CONS_BLINK_CURSOR)
2396				/* if it's a blinking cursor, update it */
2397				(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
2398				    sc_inside_cutmark(scp, scp->cursor_pos));
2399		}
2400	}
2401
2402#ifndef SC_NO_CUTPASTE
2403	/* update "pseudo" mouse pointer image */
2404	if (scp->sc->flags & SC_MOUSE_ENABLED) {
2405		if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
2406			scp->status &= ~MOUSE_MOVED;
2407			sc_draw_mouse_image(scp);
2408		}
2409	}
2410#endif /* SC_NO_CUTPASTE */
2411
2412	scp->end = 0;
2413	scp->start = scp->xsize * scp->ysize - 1;
2414
2415	SC_VIDEO_UNLOCK(scp->sc);
2416}
2417
2418#ifdef DEV_SPLASH
2419static int
2420scsplash_callback(int event, void *arg)
2421{
2422	sc_softc_t *sc;
2423	int error;
2424
2425	sc = (sc_softc_t *)arg;
2426
2427	switch (event) {
2428	case SPLASH_INIT:
2429		if (add_scrn_saver(scsplash_saver) == 0) {
2430			sc->flags &= ~SC_SAVER_FAILED;
2431			run_scrn_saver = TRUE;
2432			if (cold && !(boothowto & RB_VERBOSE)) {
2433				scsplash_stick(TRUE);
2434				(*current_saver)(sc, TRUE);
2435			}
2436		}
2437		return 0;
2438
2439	case SPLASH_TERM:
2440		if (current_saver == scsplash_saver) {
2441			scsplash_stick(FALSE);
2442			error = remove_scrn_saver(scsplash_saver);
2443			if (error)
2444				return error;
2445		}
2446		return 0;
2447
2448	default:
2449		return EINVAL;
2450	}
2451}
2452
2453static void
2454scsplash_saver(sc_softc_t *sc, int show)
2455{
2456	static int busy = FALSE;
2457	scr_stat *scp;
2458
2459	if (busy)
2460		return;
2461	busy = TRUE;
2462
2463	scp = sc->cur_scp;
2464	if (show) {
2465		if (!(sc->flags & SC_SAVER_FAILED)) {
2466			if (!(sc->flags & SC_SCRN_BLANKED))
2467				set_scrn_saver_mode(scp, -1, NULL, 0);
2468			switch (splash(sc->adp, TRUE)) {
2469			case 0: /* succeeded */
2470				break;
2471			case EAGAIN: /* try later */
2472				restore_scrn_saver_mode(scp, FALSE);
2473				sc_touch_scrn_saver(); /* XXX */
2474				break;
2475			default:
2476				sc->flags |= SC_SAVER_FAILED;
2477				scsplash_stick(FALSE);
2478				restore_scrn_saver_mode(scp, TRUE);
2479				printf(
2480				    "scsplash_saver(): failed to put up the image\n");
2481				break;
2482			}
2483		}
2484	} else if (!sticky_splash) {
2485		if ((sc->flags & SC_SCRN_BLANKED) &&
2486		    (splash(sc->adp, FALSE) == 0))
2487			restore_scrn_saver_mode(scp, TRUE);
2488	}
2489	busy = FALSE;
2490}
2491
2492static int
2493add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2494{
2495#if 0
2496    int error;
2497
2498    if (current_saver != none_saver) {
2499	error = remove_scrn_saver(current_saver);
2500	if (error)
2501	    return error;
2502    }
2503#endif
2504	if (current_saver != none_saver)
2505		return EBUSY;
2506
2507	run_scrn_saver = FALSE;
2508	saver_mode = CONS_LKM_SAVER;
2509	current_saver = this_saver;
2510	return 0;
2511}
2512
2513static int
2514remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
2515{
2516	if (current_saver != this_saver)
2517		return EINVAL;
2518
2519#if 0
2520    /*
2521     * In order to prevent `current_saver' from being called by
2522     * the timeout routine `scrn_timer()' while we manipulate
2523     * the saver list, we shall set `current_saver' to `none_saver'
2524     * before stopping the current saver, rather than blocking by `splXX()'.
2525     */
2526    current_saver = none_saver;
2527    if (scrn_blanked)
2528        stop_scrn_saver(this_saver);
2529#endif
2530
2531	/* unblank all blanked screens */
2532	wait_scrn_saver_stop(NULL);
2533	if (scrn_blanked)
2534		return EBUSY;
2535
2536	current_saver = none_saver;
2537	return 0;
2538}
2539
2540static int
2541set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
2542{
2543	int s;
2544
2545	/* assert(scp == scp->sc->cur_scp) */
2546	s = spltty();
2547	if (!ISGRAPHSC(scp))
2548		sc_remove_cursor_image(scp);
2549	scp->splash_save_mode = scp->mode;
2550	scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
2551	scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
2552	scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
2553	scp->sc->flags |= SC_SCRN_BLANKED;
2554	++scrn_blanked;
2555	splx(s);
2556	if (mode < 0)
2557		return 0;
2558	scp->mode = mode;
2559	if (set_mode(scp) == 0) {
2560		if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
2561			scp->status |= GRAPHICS_MODE;
2562#ifndef SC_NO_PALETTE_LOADING
2563		if (pal != NULL)
2564			vidd_load_palette(scp->sc->adp, pal);
2565#endif
2566		sc_set_border(scp, border);
2567		return 0;
2568	} else {
2569		s = spltty();
2570		scp->mode = scp->splash_save_mode;
2571		scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2572		scp->status |= scp->splash_save_status;
2573		splx(s);
2574		return 1;
2575	}
2576}
2577
2578static int
2579restore_scrn_saver_mode(scr_stat *scp, int changemode)
2580{
2581	int mode;
2582	int status;
2583	int s;
2584
2585	/* assert(scp == scp->sc->cur_scp) */
2586	s = spltty();
2587	mode = scp->mode;
2588	status = scp->status;
2589	scp->mode = scp->splash_save_mode;
2590	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
2591	scp->status |= scp->splash_save_status;
2592	scp->sc->flags &= ~SC_SCRN_BLANKED;
2593	if (!changemode) {
2594		if (!ISGRAPHSC(scp))
2595			sc_draw_cursor_image(scp);
2596		--scrn_blanked;
2597		splx(s);
2598		return 0;
2599	}
2600	if (set_mode(scp) == 0) {
2601#ifndef SC_NO_PALETTE_LOADING
2602#ifdef SC_PIXEL_MODE
2603		if (scp->sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
2604			vidd_load_palette(scp->sc->adp, scp->sc->palette2);
2605		else
2606#endif
2607			vidd_load_palette(scp->sc->adp, scp->sc->palette);
2608#endif
2609		--scrn_blanked;
2610		splx(s);
2611		return 0;
2612	} else {
2613		scp->mode = mode;
2614		scp->status = status;
2615		splx(s);
2616		return 1;
2617	}
2618}
2619
2620static void
2621stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
2622{
2623	(*saver)(sc, FALSE);
2624	run_scrn_saver = FALSE;
2625	/* the screen saver may have chosen not to stop after all... */
2626	if (sc->flags & SC_SCRN_BLANKED)
2627		return;
2628
2629	mark_all(sc->cur_scp);
2630	if (sc->delayed_next_scr)
2631		sc_switch_scr(sc, sc->delayed_next_scr - 1);
2632	if (!kdb_active)
2633		wakeup(&scrn_blanked);
2634}
2635
2636static int
2637wait_scrn_saver_stop(sc_softc_t *sc)
2638{
2639	int error = 0;
2640
2641	while (scrn_blanked > 0) {
2642		run_scrn_saver = FALSE;
2643		if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
2644			error = 0;
2645			break;
2646		}
2647		error = tsleep(&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
2648		if ((error != 0) && (error != ERESTART))
2649			break;
2650	}
2651	run_scrn_saver = FALSE;
2652	return error;
2653}
2654#endif /* DEV_SPLASH */
2655
2656void
2657sc_touch_scrn_saver(void)
2658{
2659	scsplash_stick(FALSE);
2660	run_scrn_saver = FALSE;
2661}
2662
2663int
2664sc_switch_scr(sc_softc_t *sc, u_int next_scr)
2665{
2666	scr_stat *cur_scp;
2667	struct tty *tp;
2668	struct proc *p;
2669	int s;
2670
2671	DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
2672
2673	if (sc->cur_scp == NULL)
2674		return (0);
2675
2676	/* prevent switch if previously requested */
2677	if (sc->flags & SC_SCRN_VTYLOCK) {
2678		sc_bell(sc->cur_scp, sc->cur_scp->bell_pitch,
2679		    sc->cur_scp->bell_duration);
2680		return EPERM;
2681	}
2682
2683	/* delay switch if the screen is blanked or being updated */
2684	if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress ||
2685	    sc->blink_in_progress) {
2686		sc->delayed_next_scr = next_scr + 1;
2687		sc_touch_scrn_saver();
2688		DPRINTF(5, ("switch delayed\n"));
2689		return 0;
2690	}
2691	sc->delayed_next_scr = 0;
2692
2693	s = spltty();
2694	cur_scp = sc->cur_scp;
2695
2696	/* we are in the middle of the vty switching process... */
2697	if (sc->switch_in_progress && (cur_scp->smode.mode == VT_PROCESS) &&
2698	    cur_scp->proc) {
2699		p = pfind(cur_scp->pid);
2700		if (cur_scp->proc != p) {
2701			if (p)
2702				PROC_UNLOCK(p);
2703			/*
2704			 * The controlling process has died!!.  Do some clean
2705			 * up. NOTE:`cur_scp->proc' and `cur_scp->smode.mode'
2706			 * are not reset here yet; they will be cleared later.
2707			 */
2708			DPRINTF(5,
2709			    ("cur_scp controlling process %d died, ",
2710				cur_scp->pid));
2711			if (cur_scp->status & SWITCH_WAIT_REL) {
2712				/*
2713				 * Force the previous switch to finish, but
2714				 * return now with error.
2715				 */
2716				DPRINTF(5, ("reset WAIT_REL, "));
2717				finish_vt_rel(cur_scp, TRUE, &s);
2718				splx(s);
2719				DPRINTF(5, ("finishing previous switch\n"));
2720				return EINVAL;
2721			} else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2722				/* let's assume screen switch has been
2723				 * completed. */
2724				DPRINTF(5, ("reset WAIT_ACQ, "));
2725				finish_vt_acq(cur_scp);
2726			} else {
2727				/*
2728				 * We are in between screen release and
2729				 * acquisition, and reached here via scgetc() or
2730				 * scrn_timer() which has interrupted
2731				 * exchange_scr(). Don't do anything stupid.
2732				 */
2733				DPRINTF(5, ("waiting nothing, "));
2734			}
2735		} else {
2736			if (p)
2737				PROC_UNLOCK(p);
2738			/*
2739			 * The controlling process is alive, but not
2740			 * responding... It is either buggy or it may be just
2741			 * taking time. The following code is a gross kludge to
2742			 * cope with this problem for which there is no clean
2743			 * solution. XXX
2744			 */
2745			if (cur_scp->status & SWITCH_WAIT_REL) {
2746				switch (sc->switch_in_progress++) {
2747				case 1:
2748					break;
2749				case 2:
2750					DPRINTF(5, ("sending relsig again, "));
2751					signal_vt_rel(cur_scp);
2752					break;
2753				case 3:
2754					break;
2755				case 4:
2756				default:
2757					/*
2758					 * Act as if the controlling program
2759					 * returned VT_FALSE.
2760					 */
2761					DPRINTF(5, ("force reset WAIT_REL, "));
2762					finish_vt_rel(cur_scp, FALSE, &s);
2763					splx(s);
2764					DPRINTF(5,
2765					    ("act as if VT_FALSE was seen\n"));
2766					return EINVAL;
2767				}
2768			} else if (cur_scp->status & SWITCH_WAIT_ACQ) {
2769				switch (sc->switch_in_progress++) {
2770				case 1:
2771					break;
2772				case 2:
2773					DPRINTF(5, ("sending acqsig again, "));
2774					signal_vt_acq(cur_scp);
2775					break;
2776				case 3:
2777					break;
2778				case 4:
2779				default:
2780					/* clear the flag and finish the
2781					 * previous switch */
2782					DPRINTF(5, ("force reset WAIT_ACQ, "));
2783					finish_vt_acq(cur_scp);
2784					break;
2785				}
2786			}
2787		}
2788	}
2789
2790	/*
2791	 * Return error if an invalid argument is given, or vty switch
2792	 * is still in progress.
2793	 */
2794	if ((next_scr < sc->first_vty) ||
2795	    (next_scr >= sc->first_vty + sc->vtys) || sc->switch_in_progress) {
2796		splx(s);
2797		sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2798		DPRINTF(5, ("error 1\n"));
2799		return EINVAL;
2800	}
2801
2802	/*
2803	 * Don't allow switching away from the graphics mode vty
2804	 * if the switch mode is VT_AUTO, unless the next vty is the same
2805	 * as the current or the current vty has been closed (but showing).
2806	 */
2807	tp = SC_DEV(sc, cur_scp->index);
2808	if ((cur_scp->index != next_scr) && tty_opened_ns(tp) &&
2809	    (cur_scp->smode.mode == VT_AUTO) && ISGRAPHSC(cur_scp)) {
2810		splx(s);
2811		sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2812		DPRINTF(5, ("error, graphics mode\n"));
2813		return EINVAL;
2814	}
2815
2816	/*
2817	 * Is the wanted vty open? Don't allow switching to a closed vty.
2818	 * If we are in DDB, don't switch to a vty in the VT_PROCESS mode.
2819	 * Note that we always allow the user to switch to the kernel
2820	 * console even if it is closed.
2821	 */
2822	if ((sc_console == NULL) || (next_scr != sc_console->index)) {
2823		tp = SC_DEV(sc, next_scr);
2824		if (!tty_opened_ns(tp)) {
2825			splx(s);
2826			sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
2827			DPRINTF(5, ("error 2, requested vty isn't open!\n"));
2828			return EINVAL;
2829		}
2830		if (kdb_active && SC_STAT(tp)->smode.mode == VT_PROCESS) {
2831			splx(s);
2832			DPRINTF(5,
2833			    ("error 3, requested vty is in the VT_PROCESS mode\n"));
2834			return EINVAL;
2835		}
2836	}
2837
2838	/* this is the start of vty switching process... */
2839	++sc->switch_in_progress;
2840	sc->old_scp = cur_scp;
2841	sc->new_scp = sc_get_stat(SC_DEV(sc, next_scr));
2842	if (sc->new_scp == sc->old_scp) {
2843		sc->switch_in_progress = 0;
2844		/*
2845		 * XXX wakeup() locks the scheduler lock which will hang if
2846		 * the lock is in an in-between state, e.g., when we stop at
2847		 * a breakpoint at fork_exit.  It has always been wrong to call
2848		 * wakeup() when the debugger is active.  In RELENG_4, wakeup()
2849		 * is supposed to be locked by splhigh(), but the debugger may
2850		 * be invoked at splhigh().
2851		 */
2852		if (!kdb_active)
2853			wakeup(VTY_WCHAN(sc, next_scr));
2854		splx(s);
2855		DPRINTF(5, ("switch done (new == old)\n"));
2856		return 0;
2857	}
2858
2859	/* has controlling process died? */
2860	vt_proc_alive(sc->old_scp);
2861	vt_proc_alive(sc->new_scp);
2862
2863	/* wait for the controlling process to release the screen, if necessary
2864	 */
2865	if (signal_vt_rel(sc->old_scp)) {
2866		splx(s);
2867		return 0;
2868	}
2869
2870	/* go set up the new vty screen */
2871	splx(s);
2872	exchange_scr(sc);
2873	s = spltty();
2874
2875	/* wake up processes waiting for this vty */
2876	if (!kdb_active)
2877		wakeup(VTY_WCHAN(sc, next_scr));
2878
2879	/* wait for the controlling process to acknowledge, if necessary */
2880	if (signal_vt_acq(sc->cur_scp)) {
2881		splx(s);
2882		return 0;
2883	}
2884
2885	sc->switch_in_progress = 0;
2886	if (sc->unit == sc_console_unit)
2887		cnavailable(sc_consptr, TRUE);
2888	splx(s);
2889	DPRINTF(5, ("switch done\n"));
2890
2891	return 0;
2892}
2893
2894static int
2895do_switch_scr(sc_softc_t *sc, int s)
2896{
2897	vt_proc_alive(sc->new_scp);
2898
2899	splx(s);
2900	exchange_scr(sc);
2901	s = spltty();
2902	/* sc->cur_scp == sc->new_scp */
2903	wakeup(VTY_WCHAN(sc, sc->cur_scp->index));
2904
2905	/* wait for the controlling process to acknowledge, if necessary */
2906	if (!signal_vt_acq(sc->cur_scp)) {
2907		sc->switch_in_progress = 0;
2908		if (sc->unit == sc_console_unit)
2909			cnavailable(sc_consptr, TRUE);
2910	}
2911
2912	return s;
2913}
2914
2915static int
2916vt_proc_alive(scr_stat *scp)
2917{
2918	struct proc *p;
2919
2920	if (scp->proc) {
2921		if ((p = pfind(scp->pid)) != NULL)
2922			PROC_UNLOCK(p);
2923		if (scp->proc == p)
2924			return TRUE;
2925		scp->proc = NULL;
2926		scp->smode.mode = VT_AUTO;
2927		DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
2928	}
2929	return FALSE;
2930}
2931
2932static int
2933signal_vt_rel(scr_stat *scp)
2934{
2935	if (scp->smode.mode != VT_PROCESS)
2936		return FALSE;
2937	scp->status |= SWITCH_WAIT_REL;
2938	PROC_LOCK(scp->proc);
2939	kern_psignal(scp->proc, scp->smode.relsig);
2940	PROC_UNLOCK(scp->proc);
2941	DPRINTF(5, ("sending relsig to %d\n", scp->pid));
2942	return TRUE;
2943}
2944
2945static int
2946signal_vt_acq(scr_stat *scp)
2947{
2948	if (scp->smode.mode != VT_PROCESS)
2949		return FALSE;
2950	if (scp->sc->unit == sc_console_unit)
2951		cnavailable(sc_consptr, FALSE);
2952	scp->status |= SWITCH_WAIT_ACQ;
2953	PROC_LOCK(scp->proc);
2954	kern_psignal(scp->proc, scp->smode.acqsig);
2955	PROC_UNLOCK(scp->proc);
2956	DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
2957	return TRUE;
2958}
2959
2960static int
2961finish_vt_rel(scr_stat *scp, int release, int *s)
2962{
2963	if (scp == scp->sc->old_scp && scp->status & SWITCH_WAIT_REL) {
2964		scp->status &= ~SWITCH_WAIT_REL;
2965		if (release)
2966			*s = do_switch_scr(scp->sc, *s);
2967		else
2968			scp->sc->switch_in_progress = 0;
2969		return 0;
2970	}
2971	return EINVAL;
2972}
2973
2974static int
2975finish_vt_acq(scr_stat *scp)
2976{
2977	if (scp == scp->sc->new_scp && scp->status & SWITCH_WAIT_ACQ) {
2978		scp->status &= ~SWITCH_WAIT_ACQ;
2979		scp->sc->switch_in_progress = 0;
2980		return 0;
2981	}
2982	return EINVAL;
2983}
2984
2985static void
2986exchange_scr(sc_softc_t *sc)
2987{
2988	scr_stat *scp;
2989
2990	/* save the current state of video and keyboard */
2991	sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
2992	if (!ISGRAPHSC(sc->old_scp))
2993		sc_remove_cursor_image(sc->old_scp);
2994	if (sc->old_scp->kbd_mode == K_XLATE)
2995		save_kbd_state(sc->old_scp);
2996
2997	/* set up the video for the new screen */
2998	scp = sc->cur_scp = sc->new_scp;
2999	if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
3000		set_mode(scp);
3001	else
3002		sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3003		    (void *)sc->adp->va_window, FALSE);
3004	scp->status |= MOUSE_HIDDEN;
3005	sc_move_cursor(scp, scp->xpos, scp->ypos);
3006	if (!ISGRAPHSC(scp))
3007		sc_set_cursor_image(scp);
3008#ifndef SC_NO_PALETTE_LOADING
3009	if (ISGRAPHSC(sc->old_scp)) {
3010#ifdef SC_PIXEL_MODE
3011		if (sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT)
3012			vidd_load_palette(sc->adp, sc->palette2);
3013		else
3014#endif
3015			vidd_load_palette(sc->adp, sc->palette);
3016	}
3017#endif
3018	sc_set_border(scp, scp->border);
3019
3020	/* set up the keyboard for the new screen */
3021	if (sc->kbd_open_level == 0 && sc->old_scp->kbd_mode != scp->kbd_mode)
3022		(void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
3023	update_kbd_state(scp, scp->status, LOCK_MASK);
3024
3025	mark_all(scp);
3026}
3027
3028static void
3029sc_puts(scr_stat *scp, u_char *buf, int len)
3030{
3031#ifdef DEV_SPLASH
3032	/* make screensaver happy */
3033	if (!sticky_splash && scp == scp->sc->cur_scp && !sc_saver_keyb_only)
3034		run_scrn_saver = FALSE;
3035#endif
3036
3037	if (scp->tsw)
3038		(*scp->tsw->te_puts)(scp, buf, len);
3039	if (scp->sc->delayed_next_scr)
3040		sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
3041}
3042
3043void
3044sc_draw_cursor_image(scr_stat *scp)
3045{
3046	/* assert(scp == scp->sc->cur_scp); */
3047	SC_VIDEO_LOCK(scp->sc);
3048	(*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
3049	    scp->curs_attr.flags & CONS_BLINK_CURSOR, TRUE,
3050	    sc_inside_cutmark(scp, scp->cursor_pos));
3051	scp->cursor_oldpos = scp->cursor_pos;
3052	SC_VIDEO_UNLOCK(scp->sc);
3053}
3054
3055void
3056sc_remove_cursor_image(scr_stat *scp)
3057{
3058	/* assert(scp == scp->sc->cur_scp); */
3059	SC_VIDEO_LOCK(scp->sc);
3060	(*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
3061	    scp->curs_attr.flags & CONS_BLINK_CURSOR, FALSE,
3062	    sc_inside_cutmark(scp, scp->cursor_oldpos));
3063	SC_VIDEO_UNLOCK(scp->sc);
3064}
3065
3066static void
3067update_cursor_image(scr_stat *scp)
3068{
3069	/* assert(scp == scp->sc->cur_scp); */
3070	sc_remove_cursor_image(scp);
3071	sc_set_cursor_image(scp);
3072	sc_draw_cursor_image(scp);
3073}
3074
3075void
3076sc_set_cursor_image(scr_stat *scp)
3077{
3078	scp->curs_attr = scp->base_curs_attr;
3079	if (scp->curs_attr.flags & CONS_HIDDEN_CURSOR) {
3080		/* hidden cursor is internally represented as zero-height
3081		 * underline */
3082		scp->curs_attr.flags = CONS_CHAR_CURSOR;
3083		scp->curs_attr.base = scp->curs_attr.height = 0;
3084	} else if (scp->curs_attr.flags & CONS_CHAR_CURSOR) {
3085		scp->curs_attr.base =
3086		    imin(scp->base_curs_attr.base, scp->font_size - 1);
3087		scp->curs_attr.height = imin(scp->base_curs_attr.height,
3088		    scp->font_size - scp->curs_attr.base);
3089	} else { /* block cursor */
3090		scp->curs_attr.base = 0;
3091		scp->curs_attr.height = scp->font_size;
3092	}
3093
3094	/* assert(scp == scp->sc->cur_scp); */
3095	SC_VIDEO_LOCK(scp->sc);
3096	(*scp->rndr->set_cursor)(scp, scp->curs_attr.base,
3097	    scp->curs_attr.height, scp->curs_attr.flags & CONS_BLINK_CURSOR);
3098	SC_VIDEO_UNLOCK(scp->sc);
3099}
3100
3101static void
3102sc_adjust_ca(struct cursor_attr *cap, int flags, int base, int height)
3103{
3104	if (flags & CONS_CHARCURSOR_COLORS) {
3105		cap->bg[0] = base & 0xff;
3106		cap->bg[1] = height & 0xff;
3107	} else if (flags & CONS_MOUSECURSOR_COLORS) {
3108		cap->mouse_ba = base & 0xff;
3109		cap->mouse_ia = height & 0xff;
3110	} else {
3111		if (base >= 0)
3112			cap->base = base;
3113		if (height >= 0)
3114			cap->height = height;
3115		if (!(flags & CONS_SHAPEONLY_CURSOR))
3116			cap->flags = flags & CONS_CURSOR_ATTRS;
3117	}
3118}
3119
3120static void
3121change_cursor_shape(scr_stat *scp, int flags, int base, int height)
3122{
3123	if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp))
3124		sc_remove_cursor_image(scp);
3125
3126	if (flags & CONS_RESET_CURSOR)
3127		scp->base_curs_attr = scp->dflt_curs_attr;
3128	else if (flags & CONS_DEFAULT_CURSOR) {
3129		sc_adjust_ca(&scp->dflt_curs_attr, flags, base, height);
3130		scp->base_curs_attr = scp->dflt_curs_attr;
3131	} else
3132		sc_adjust_ca(&scp->base_curs_attr, flags, base, height);
3133
3134	if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp)) {
3135		sc_set_cursor_image(scp);
3136		sc_draw_cursor_image(scp);
3137	}
3138}
3139
3140void
3141sc_change_cursor_shape(scr_stat *scp, int flags, int base, int height)
3142{
3143	sc_softc_t *sc;
3144	struct tty *tp;
3145	int s;
3146	int i;
3147
3148	if (flags == -1)
3149		flags = CONS_SHAPEONLY_CURSOR;
3150
3151	s = spltty();
3152	if (flags & CONS_LOCAL_CURSOR) {
3153		/* local (per vty) change */
3154		change_cursor_shape(scp, flags, base, height);
3155		splx(s);
3156		return;
3157	}
3158
3159	/* global change */
3160	sc = scp->sc;
3161	if (flags & CONS_RESET_CURSOR)
3162		sc->curs_attr = sc->dflt_curs_attr;
3163	else if (flags & CONS_DEFAULT_CURSOR) {
3164		sc_adjust_ca(&sc->dflt_curs_attr, flags, base, height);
3165		sc->curs_attr = sc->dflt_curs_attr;
3166	} else
3167		sc_adjust_ca(&sc->curs_attr, flags, base, height);
3168
3169	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; ++i) {
3170		if ((tp = SC_DEV(sc, i)) == NULL)
3171			continue;
3172		if ((scp = sc_get_stat(tp)) == NULL)
3173			continue;
3174		scp->dflt_curs_attr = sc->curs_attr;
3175		change_cursor_shape(scp, CONS_RESET_CURSOR, -1, -1);
3176	}
3177	splx(s);
3178}
3179
3180static void
3181scinit(int unit, int flags)
3182{
3183
3184	/*
3185	 * When syscons is being initialized as the kernel console, malloc()
3186	 * is not yet functional, because various kernel structures has not been
3187	 * fully initialized yet.  Therefore, we need to declare the following
3188	 * static buffers for the console.  This is less than ideal,
3189	 * but is necessry evil for the time being.  XXX
3190	 */
3191	static u_short sc_buffer[ROW * COL]; /* XXX */
3192#ifndef SC_NO_FONT_LOADING
3193	static u_char font_8[256 * 8];
3194	static u_char font_14[256 * 14];
3195	static u_char font_16[256 * 16];
3196#endif
3197
3198#ifdef SC_KERNEL_CONS_ATTRS
3199	static const u_char dflt_kattrtab[] = SC_KERNEL_CONS_ATTRS;
3200#elif SC_KERNEL_CONS_ATTR == FG_WHITE
3201	static const u_char dflt_kattrtab[] = {
3202		FG_WHITE,
3203		FG_YELLOW,
3204		FG_LIGHTMAGENTA,
3205		FG_LIGHTRED,
3206		FG_LIGHTCYAN,
3207		FG_LIGHTGREEN,
3208		FG_LIGHTBLUE,
3209		FG_GREEN,
3210		0,
3211	};
3212#else
3213	static const u_char dflt_kattrtab[] = {
3214		FG_WHITE,
3215		0,
3216	};
3217#endif
3218	sc_softc_t *sc;
3219	scr_stat *scp;
3220	video_adapter_t *adp;
3221	int col;
3222	int kbdidx;
3223	int row;
3224	int i;
3225
3226	/* one time initialization */
3227	if (init_done == COLD) {
3228		sc_get_bios_values(&bios_value);
3229		for (i = 0; i < nitems(sc_kattrtab); i++)
3230			sc_kattrtab[i] =
3231			    dflt_kattrtab[i % (nitems(dflt_kattrtab) - 1)];
3232	}
3233	init_done = WARM;
3234
3235	/*
3236	 * Allocate resources.  Even if we are being called for the second
3237	 * time, we must allocate them again, because they might have
3238	 * disappeared...
3239	 */
3240	sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
3241	if ((sc->flags & SC_INIT_DONE) == 0)
3242		SC_VIDEO_LOCKINIT(sc);
3243
3244	adp = NULL;
3245	if (sc->adapter >= 0) {
3246		vid_release(sc->adp, (void *)&sc->adapter);
3247		adp = sc->adp;
3248		sc->adp = NULL;
3249	}
3250	if (sc->kbd != NULL) {
3251		DPRINTF(5, ("sc%d: releasing kbd%d\n", unit,
3252		    sc->kbd->kb_index));
3253		i = kbd_release(sc->kbd, (void *)&sc->kbd);
3254		DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
3255		if (sc->kbd != NULL) {
3256			DPRINTF(5,
3257			    ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
3258				unit, sc->kbd->kb_index, sc->kbd->kb_unit,
3259				sc->kbd->kb_flags));
3260		}
3261		sc->kbd = NULL;
3262	}
3263	sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
3264	sc->adp = vid_get_adapter(sc->adapter);
3265	/* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
3266
3267	kbdidx = sc_allocate_keyboard(sc, unit);
3268	DPRINTF(1, ("sc%d: keyboard %d\n", unit, kbdidx));
3269
3270	sc->kbd = kbd_get_keyboard(kbdidx);
3271	if (sc->kbd != NULL) {
3272		DPRINTF(1,
3273		    ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n", unit,
3274			sc->kbd->kb_index, sc->kbd->kb_unit,
3275			sc->kbd->kb_flags));
3276	}
3277
3278	if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
3279		sc->initial_mode = sc->adp->va_initial_mode;
3280
3281#ifndef SC_NO_FONT_LOADING
3282		if (flags & SC_KERNEL_CONSOLE) {
3283			sc->font_8 = font_8;
3284			sc->font_14 = font_14;
3285			sc->font_16 = font_16;
3286		} else if (sc->font_8 == NULL) {
3287			/* assert(sc_malloc) */
3288			sc->font_8 = malloc(sizeof(font_8), M_DEVBUF, M_WAITOK);
3289			sc->font_14 =
3290			    malloc(sizeof(font_14), M_DEVBUF, M_WAITOK);
3291			sc->font_16 =
3292			    malloc(sizeof(font_16), M_DEVBUF, M_WAITOK);
3293		}
3294#endif
3295
3296		/* extract the hardware cursor location and hide the cursor for
3297		 * now */
3298		vidd_read_hw_cursor(sc->adp, &col, &row);
3299		vidd_set_hw_cursor(sc->adp, -1, -1);
3300
3301		/* set up the first console */
3302		sc->first_vty = unit * MAXCONS;
3303		sc->vtys = MAXCONS; /* XXX: should be configurable */
3304		if (flags & SC_KERNEL_CONSOLE) {
3305			/*
3306			 * Set up devs structure but don't use it yet, calling
3307			 * make_dev() might panic kernel.  Wait for
3308			 * sc_attach_unit() to actually create the devices.
3309			 */
3310			sc->dev = main_devs;
3311			scp = &main_console;
3312			init_scp(sc, sc->first_vty, scp);
3313			sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize,
3314			    scp->ysize, (void *)sc_buffer, FALSE);
3315			if (sc_init_emulator(scp, SC_DFLT_TERM))
3316				sc_init_emulator(scp, "*");
3317			(*scp->tsw->te_default_attr)(
3318			    scp, SC_KERNEL_CONS_ATTR, SC_KERNEL_CONS_REV_ATTR);
3319		} else {
3320			/* assert(sc_malloc) */
3321			sc->dev = malloc(sizeof(struct tty *) * sc->vtys,
3322			    M_DEVBUF, M_WAITOK | M_ZERO);
3323			sc->dev[0] = sc_alloc_tty(0, unit * MAXCONS);
3324			scp = alloc_scp(sc, sc->first_vty);
3325			SC_STAT(sc->dev[0]) = scp;
3326		}
3327		sc->cur_scp = scp;
3328
3329		/* copy screen to temporary buffer */
3330		sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
3331		    (void *)scp->sc->adp->va_window, FALSE);
3332		if (ISTEXTSC(scp))
3333			sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0,
3334			    scp->xsize * scp->ysize);
3335
3336		/* Sync h/w cursor position to s/w (sc and teken). */
3337		if (col >= scp->xsize)
3338			col = 0;
3339		if (row >= scp->ysize)
3340			row = scp->ysize - 1;
3341		scp->xpos = col;
3342		scp->ypos = row;
3343		scp->cursor_pos = scp->cursor_oldpos = row * scp->xsize + col;
3344		(*scp->tsw->te_sync)(scp);
3345
3346		sc->dflt_curs_attr.base = 0;
3347		sc->dflt_curs_attr.height = howmany(scp->font_size, 8);
3348		sc->dflt_curs_attr.flags = 0;
3349		sc->dflt_curs_attr.bg[0] = FG_RED;
3350		sc->dflt_curs_attr.bg[1] = FG_LIGHTGREY;
3351		sc->dflt_curs_attr.bg[2] = FG_BLUE;
3352		sc->dflt_curs_attr.mouse_ba = FG_WHITE;
3353		sc->dflt_curs_attr.mouse_ia = FG_RED;
3354		sc->curs_attr = sc->dflt_curs_attr;
3355		scp->base_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
3356		scp->curs_attr = scp->base_curs_attr;
3357
3358#ifndef SC_NO_SYSMOUSE
3359		sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
3360#endif
3361		if (!ISGRAPHSC(scp)) {
3362			sc_set_cursor_image(scp);
3363			sc_draw_cursor_image(scp);
3364		}
3365
3366		/* save font and palette */
3367#ifndef SC_NO_FONT_LOADING
3368		sc->fonts_loaded = 0;
3369		if (ISFONTAVAIL(sc->adp->va_flags)) {
3370#ifdef SC_DFLT_FONT
3371			bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
3372			bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
3373			bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
3374			sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
3375			if (scp->font_size < 14) {
3376				sc_load_font(scp, 0, 8, 8, sc->font_8, 0, 256);
3377			} else if (scp->font_size >= 16) {
3378				sc_load_font(
3379				    scp, 0, 16, 8, sc->font_16, 0, 256);
3380			} else {
3381				sc_load_font(
3382				    scp, 0, 14, 8, sc->font_14, 0, 256);
3383			}
3384#else /* !SC_DFLT_FONT */
3385			if (scp->font_size < 14) {
3386				sc_save_font(scp, 0, 8, 8, sc->font_8, 0, 256);
3387				sc->fonts_loaded = FONT_8;
3388			} else if (scp->font_size >= 16) {
3389				sc_save_font(
3390				    scp, 0, 16, 8, sc->font_16, 0, 256);
3391				sc->fonts_loaded = FONT_16;
3392			} else {
3393				sc_save_font(
3394				    scp, 0, 14, 8, sc->font_14, 0, 256);
3395				sc->fonts_loaded = FONT_14;
3396			}
3397#endif /* SC_DFLT_FONT */
3398			/* FONT KLUDGE: always use the font page #0. XXX */
3399			sc_show_font(scp, 0);
3400		}
3401#endif /* !SC_NO_FONT_LOADING */
3402
3403#ifndef SC_NO_PALETTE_LOADING
3404		vidd_save_palette(sc->adp, sc->palette);
3405#ifdef SC_PIXEL_MODE
3406		for (i = 0; i < sizeof(sc->palette2); i++)
3407			sc->palette2[i] = i / 3;
3408#endif
3409#endif
3410
3411#ifdef DEV_SPLASH
3412		if (!(sc->flags & SC_SPLASH_SCRN)) {
3413			/* we are ready to put up the splash image! */
3414			splash_init(sc->adp, scsplash_callback, sc);
3415			sc->flags |= SC_SPLASH_SCRN;
3416		}
3417#endif
3418	}
3419
3420	/* the rest is not necessary, if we have done it once */
3421	if (sc->flags & SC_INIT_DONE)
3422		return;
3423
3424	/* initialize mapscrn arrays to a one to one map */
3425	for (i = 0; i < sizeof(sc->scr_map); i++)
3426		sc->scr_map[i] = sc->scr_rmap[i] = i;
3427
3428	sc->flags |= SC_INIT_DONE;
3429}
3430
3431static void
3432scterm(int unit, int flags)
3433{
3434	sc_softc_t *sc;
3435	scr_stat *scp;
3436
3437	sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
3438	if (sc == NULL)
3439		return; /* shouldn't happen */
3440
3441#ifdef DEV_SPLASH
3442	/* this console is no longer available for the splash screen */
3443	if (sc->flags & SC_SPLASH_SCRN) {
3444		splash_term(sc->adp);
3445		sc->flags &= ~SC_SPLASH_SCRN;
3446	}
3447#endif
3448
3449#if 0 /* XXX */
3450    /* move the hardware cursor to the upper-left corner */
3451    vidd_set_hw_cursor(sc->adp, 0, 0);
3452#endif
3453
3454	/* release the keyboard and the video card */
3455	if (sc->kbd != NULL)
3456		kbd_release(sc->kbd, &sc->kbd);
3457	if (sc->adapter >= 0)
3458		vid_release(sc->adp, &sc->adapter);
3459
3460	/* stop the terminal emulator, if any */
3461	scp = sc_get_stat(sc->dev[0]);
3462	if (scp->tsw)
3463		(*scp->tsw->te_term)(scp, &scp->ts);
3464	mtx_destroy(&sc->video_mtx);
3465
3466	/* clear the structure */
3467	if (!(flags & SC_KERNEL_CONSOLE)) {
3468		free(scp->ts, M_DEVBUF);
3469		/* XXX: We need delete_dev() for this */
3470		free(sc->dev, M_DEVBUF);
3471#if 0
3472	/* XXX: We need a ttyunregister for this */
3473	free(sc->tty, M_DEVBUF);
3474#endif
3475#ifndef SC_NO_FONT_LOADING
3476		free(sc->font_8, M_DEVBUF);
3477		free(sc->font_14, M_DEVBUF);
3478		free(sc->font_16, M_DEVBUF);
3479#endif
3480		/* XXX vtb, history */
3481	}
3482	bzero(sc, sizeof(*sc));
3483	sc->adapter = -1;
3484}
3485
3486static void
3487scshutdown(__unused void *arg, __unused int howto)
3488{
3489
3490	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3491	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3492	KASSERT(sc_console->sc->cur_scp != NULL,
3493	    ("sc_console->sc->cur_scp != NULL"));
3494
3495	sc_touch_scrn_saver();
3496	if (!cold && sc_console->sc->cur_scp->index != sc_console->index &&
3497	    sc_console->sc->cur_scp->smode.mode == VT_AUTO &&
3498	    sc_console->smode.mode == VT_AUTO)
3499		sc_switch_scr(sc_console->sc, sc_console->index);
3500	shutdown_in_progress = TRUE;
3501}
3502
3503static void
3504scsuspend(__unused void *arg)
3505{
3506	int retry;
3507
3508	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3509	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3510	KASSERT(sc_console->sc->cur_scp != NULL,
3511	    ("sc_console->sc->cur_scp != NULL"));
3512
3513	sc_susp_scr = sc_console->sc->cur_scp->index;
3514	if (sc_no_suspend_vtswitch || sc_susp_scr == sc_console->index) {
3515		sc_touch_scrn_saver();
3516		sc_susp_scr = -1;
3517		return;
3518	}
3519	for (retry = 0; retry < 10; retry++) {
3520		sc_switch_scr(sc_console->sc, sc_console->index);
3521		if (!sc_console->sc->switch_in_progress)
3522			break;
3523		pause("scsuspend", hz);
3524	}
3525	suspend_in_progress = TRUE;
3526}
3527
3528static void
3529scresume(__unused void *arg)
3530{
3531
3532	KASSERT(sc_console != NULL, ("sc_console != NULL"));
3533	KASSERT(sc_console->sc != NULL, ("sc_console->sc != NULL"));
3534	KASSERT(sc_console->sc->cur_scp != NULL,
3535	    ("sc_console->sc->cur_scp != NULL"));
3536
3537	suspend_in_progress = FALSE;
3538	if (sc_susp_scr < 0) {
3539		update_font(sc_console->sc->cur_scp);
3540		return;
3541	}
3542	sc_switch_scr(sc_console->sc, sc_susp_scr);
3543}
3544
3545int
3546sc_clean_up(scr_stat *scp)
3547{
3548#ifdef DEV_SPLASH
3549	int error;
3550#endif
3551
3552	if (scp->sc->flags & SC_SCRN_BLANKED) {
3553		sc_touch_scrn_saver();
3554#ifdef DEV_SPLASH
3555		if ((error = wait_scrn_saver_stop(scp->sc)))
3556			return error;
3557#endif
3558	}
3559	scp->status |= MOUSE_HIDDEN;
3560	sc_remove_mouse_image(scp);
3561	sc_remove_cutmarking(scp);
3562	return 0;
3563}
3564
3565void
3566sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
3567{
3568	sc_vtb_t new;
3569	sc_vtb_t old;
3570
3571	old = scp->vtb;
3572	sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
3573	if (!discard && (old.vtb_flags & VTB_VALID)) {
3574		/* retain the current cursor position and buffer contants */
3575		scp->cursor_oldpos = scp->cursor_pos;
3576		/*
3577		 * This works only if the old buffer has the same size as or
3578		 * larger than the new one. XXX
3579		 */
3580		sc_vtb_copy(&old, 0, &new, 0, scp->xsize * scp->ysize);
3581		scp->vtb = new;
3582	} else {
3583		scp->vtb = new;
3584		sc_vtb_destroy(&old);
3585	}
3586
3587#ifndef SC_NO_SYSMOUSE
3588	/* move the mouse cursor at the center of the screen */
3589	sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
3590#endif
3591}
3592
3593static scr_stat *
3594alloc_scp(sc_softc_t *sc, int vty)
3595{
3596	scr_stat *scp;
3597
3598	/* assert(sc_malloc) */
3599
3600	scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
3601	init_scp(sc, vty, scp);
3602
3603	sc_alloc_scr_buffer(scp, TRUE, TRUE);
3604	if (sc_init_emulator(scp, SC_DFLT_TERM))
3605		sc_init_emulator(scp, "*");
3606
3607#ifndef SC_NO_CUTPASTE
3608	sc_alloc_cut_buffer(scp, TRUE);
3609#endif
3610
3611#ifndef SC_NO_HISTORY
3612	sc_alloc_history_buffer(scp, 0, 0, TRUE);
3613#endif
3614
3615	return scp;
3616}
3617
3618static void
3619init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
3620{
3621	video_info_t info;
3622
3623	bzero(scp, sizeof(*scp));
3624
3625	scp->index = vty;
3626	scp->sc = sc;
3627	scp->status = 0;
3628	scp->mode = sc->initial_mode;
3629	vidd_get_info(sc->adp, scp->mode, &info);
3630	if (info.vi_flags & V_INFO_GRAPHICS) {
3631		scp->status |= GRAPHICS_MODE;
3632		scp->xpixel = info.vi_width;
3633		scp->ypixel = info.vi_height;
3634		scp->xsize = info.vi_width / info.vi_cwidth;
3635		scp->ysize = info.vi_height / info.vi_cheight;
3636		scp->font_size = 0;
3637		scp->font = NULL;
3638	} else {
3639		scp->xsize = info.vi_width;
3640		scp->ysize = info.vi_height;
3641		scp->xpixel = scp->xsize * info.vi_cwidth;
3642		scp->ypixel = scp->ysize * info.vi_cheight;
3643	}
3644
3645	scp->font_size = info.vi_cheight;
3646	scp->font_width = info.vi_cwidth;
3647#ifndef SC_NO_FONT_LOADING
3648	if (info.vi_cheight < 14)
3649		scp->font = sc->font_8;
3650	else if (info.vi_cheight >= 16)
3651		scp->font = sc->font_16;
3652	else
3653		scp->font = sc->font_14;
3654#else
3655	scp->font = NULL;
3656#endif
3657
3658	sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
3659	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
3660	scp->xoff = scp->yoff = 0;
3661	scp->xpos = scp->ypos = 0;
3662	scp->start = scp->xsize * scp->ysize - 1;
3663	scp->end = 0;
3664	scp->tsw = NULL;
3665	scp->ts = NULL;
3666	scp->rndr = NULL;
3667	scp->border = (SC_NORM_ATTR >> 4) & 0x0f;
3668	scp->base_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
3669	scp->mouse_cut_start = scp->xsize * scp->ysize;
3670	scp->mouse_cut_end = -1;
3671	scp->mouse_signal = 0;
3672	scp->mouse_pid = 0;
3673	scp->mouse_proc = NULL;
3674	scp->kbd_mode = K_XLATE;
3675	scp->bell_pitch = bios_value.bell_pitch;
3676	scp->bell_duration = BELL_DURATION;
3677	scp->status |= (bios_value.shift_state & NLKED);
3678	scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
3679	scp->pid = 0;
3680	scp->proc = NULL;
3681	scp->smode.mode = VT_AUTO;
3682	scp->history = NULL;
3683	scp->history_pos = 0;
3684	scp->history_size = 0;
3685}
3686
3687int
3688sc_init_emulator(scr_stat *scp, char *name)
3689{
3690	sc_term_sw_t *sw;
3691	sc_rndr_sw_t *rndr;
3692	void *p;
3693	int error;
3694
3695	if (name == NULL) /* if no name is given, use the current emulator */
3696		sw = scp->tsw;
3697	else /* ...otherwise find the named emulator */
3698		sw = sc_term_match(name);
3699	if (sw == NULL)
3700		return EINVAL;
3701
3702	rndr = NULL;
3703	if (strcmp(sw->te_renderer, "*") != 0) {
3704		rndr = sc_render_match(scp, sw->te_renderer,
3705		    scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3706	}
3707	if (rndr == NULL) {
3708		rndr = sc_render_match(scp, scp->sc->adp->va_name,
3709		    scp->status & (GRAPHICS_MODE | PIXEL_MODE));
3710		if (rndr == NULL)
3711			return ENODEV;
3712	}
3713
3714	if (sw == scp->tsw) {
3715		error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
3716		scp->rndr = rndr;
3717		scp->rndr->init(scp);
3718		sc_clear_screen(scp);
3719		/* assert(error == 0); */
3720		return error;
3721	}
3722
3723	if (sc_malloc && (sw->te_size > 0))
3724		p = malloc(sw->te_size, M_DEVBUF, M_NOWAIT);
3725	else
3726		p = NULL;
3727	error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
3728	if (error)
3729		return error;
3730
3731	if (scp->tsw)
3732		(*scp->tsw->te_term)(scp, &scp->ts);
3733	if (scp->ts != NULL)
3734		free(scp->ts, M_DEVBUF);
3735	scp->tsw = sw;
3736	scp->ts = p;
3737	scp->rndr = rndr;
3738	scp->rndr->init(scp);
3739
3740	(*sw->te_default_attr)(scp, SC_NORM_ATTR, SC_NORM_REV_ATTR);
3741	sc_clear_screen(scp);
3742
3743	return 0;
3744}
3745
3746/*
3747 * scgetc(flags) - get character from keyboard.
3748 * If flags & SCGETC_CN, then avoid harmful side effects.
3749 * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
3750 * return NOKEY if there is nothing there.
3751 */
3752static u_int
3753scgetc(sc_softc_t *sc, u_int flags, struct sc_cnstate *sp)
3754{
3755	scr_stat *scp;
3756#ifndef SC_NO_HISTORY
3757	struct tty *tp;
3758#endif
3759	u_int c;
3760	int this_scr;
3761	int f;
3762	int i;
3763
3764	if (sc->kbd == NULL)
3765		return NOKEY;
3766
3767next_code:
3768#if 1
3769	/* I don't like this, but... XXX */
3770	if (flags & SCGETC_CN)
3771		sccnupdate(sc->cur_scp);
3772#endif
3773	scp = sc->cur_scp;
3774	/* first see if there is something in the keyboard port */
3775	for (;;) {
3776		if (flags & SCGETC_CN)
3777			sccnscrunlock(sc, sp);
3778		c = kbdd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
3779		if (flags & SCGETC_CN)
3780			sccnscrlock(sc, sp);
3781		if (c == ERRKEY) {
3782			if (!(flags & SCGETC_CN))
3783				sc_bell(
3784				    scp, bios_value.bell_pitch, BELL_DURATION);
3785		} else if (c == NOKEY)
3786			return c;
3787		else
3788			break;
3789	}
3790
3791	/* make screensaver happy */
3792	if (!(c & RELKEY))
3793		sc_touch_scrn_saver();
3794
3795	if (!(flags & SCGETC_CN))
3796		random_harvest_queue(&c, sizeof(c), RANDOM_KEYBOARD);
3797
3798	if (sc->kbd_open_level == 0 && scp->kbd_mode != K_XLATE)
3799		return KEYCHAR(c);
3800
3801	/* if scroll-lock pressed allow history browsing */
3802	if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
3803		scp->status &= ~CURSOR_ENABLED;
3804		sc_remove_cursor_image(scp);
3805
3806#ifndef SC_NO_HISTORY
3807		if (!(scp->status & BUFFER_SAVED)) {
3808			scp->status |= BUFFER_SAVED;
3809			sc_hist_save(scp);
3810		}
3811		switch (c) {
3812		/* FIXME: key codes */
3813		case SPCLKEY | FKEY | F(49): /* home key */
3814			sc_remove_cutmarking(scp);
3815			sc_hist_home(scp);
3816			goto next_code;
3817
3818		case SPCLKEY | FKEY | F(57): /* end key */
3819			sc_remove_cutmarking(scp);
3820			sc_hist_end(scp);
3821			goto next_code;
3822
3823		case SPCLKEY | FKEY | F(50): /* up arrow key */
3824			sc_remove_cutmarking(scp);
3825			if (sc_hist_up_line(scp))
3826				if (!(flags & SCGETC_CN))
3827					sc_bell(scp, bios_value.bell_pitch,
3828					    BELL_DURATION);
3829			goto next_code;
3830
3831		case SPCLKEY | FKEY | F(58): /* down arrow key */
3832			sc_remove_cutmarking(scp);
3833			if (sc_hist_down_line(scp))
3834				if (!(flags & SCGETC_CN))
3835					sc_bell(scp, bios_value.bell_pitch,
3836					    BELL_DURATION);
3837			goto next_code;
3838
3839		case SPCLKEY | FKEY | F(51): /* page up key */
3840			sc_remove_cutmarking(scp);
3841			for (i = 0; i < scp->ysize; i++)
3842				if (sc_hist_up_line(scp)) {
3843					if (!(flags & SCGETC_CN))
3844						sc_bell(scp,
3845						    bios_value.bell_pitch,
3846						    BELL_DURATION);
3847					break;
3848				}
3849			goto next_code;
3850
3851		case SPCLKEY | FKEY | F(59): /* page down key */
3852			sc_remove_cutmarking(scp);
3853			for (i = 0; i < scp->ysize; i++)
3854				if (sc_hist_down_line(scp)) {
3855					if (!(flags & SCGETC_CN))
3856						sc_bell(scp,
3857						    bios_value.bell_pitch,
3858						    BELL_DURATION);
3859					break;
3860				}
3861			goto next_code;
3862		}
3863#endif /* SC_NO_HISTORY */
3864	}
3865
3866	/*
3867	 * Process and consume special keys here.  Return a plain char code
3868	 * or a char code with the META flag or a function key code.
3869	 */
3870	if (c & RELKEY) {
3871		/* key released */
3872		/* goto next_code */
3873	} else {
3874		/* key pressed */
3875		if (c & SPCLKEY) {
3876			c &= ~SPCLKEY;
3877			switch (KEYCHAR(c)) {
3878			/* LOCKING KEYS */
3879			case NLK:
3880			case CLK:
3881			case ALK:
3882				break;
3883			case SLK:
3884				(void)kbdd_ioctl(
3885				    sc->kbd, KDGKBSTATE, (caddr_t)&f);
3886				if (f & SLKED) {
3887					scp->status |= SLKED;
3888				} else {
3889					if (scp->status & SLKED) {
3890						scp->status &= ~SLKED;
3891#ifndef SC_NO_HISTORY
3892						if (scp->status &
3893						    BUFFER_SAVED) {
3894							if (!sc_hist_restore(
3895								scp))
3896								sc_remove_cutmarking(
3897								    scp);
3898							scp->status &=
3899							    ~BUFFER_SAVED;
3900							scp->status |=
3901							    CURSOR_ENABLED;
3902							sc_draw_cursor_image(
3903							    scp);
3904						}
3905						/* Only safe in Giant-locked
3906						 * context. */
3907						tp = SC_DEV(sc, scp->index);
3908						if (!(flags & SCGETC_CN) &&
3909						    tty_opened_ns(tp))
3910							sctty_outwakeup(tp);
3911#endif
3912					}
3913				}
3914				break;
3915
3916			case PASTE:
3917#ifndef SC_NO_CUTPASTE
3918				sc_mouse_paste(scp);
3919#endif
3920				break;
3921
3922			/* NON-LOCKING KEYS */
3923			case NOP:
3924			case LSH:
3925			case RSH:
3926			case LCTR:
3927			case RCTR:
3928			case LALT:
3929			case RALT:
3930			case ASH:
3931			case META:
3932				break;
3933
3934			case BTAB:
3935				if (!(sc->flags & SC_SCRN_BLANKED))
3936					return c;
3937				break;
3938
3939			case SPSC:
3940#ifdef DEV_SPLASH
3941				/* force activatation/deactivation of the screen
3942				 * saver */
3943				if (!(sc->flags & SC_SCRN_BLANKED)) {
3944					run_scrn_saver = TRUE;
3945					sc->scrn_time_stamp -= scrn_blank_time;
3946				}
3947				if (cold) {
3948					/*
3949					 * While devices are being probed, the
3950					 * screen saver need to be invoked
3951					 * explicitly. XXX
3952					 */
3953					if (sc->flags & SC_SCRN_BLANKED) {
3954						scsplash_stick(FALSE);
3955						stop_scrn_saver(
3956						    sc, current_saver);
3957					} else {
3958						if (!ISGRAPHSC(scp)) {
3959							scsplash_stick(TRUE);
3960							(*current_saver)(
3961							    sc, TRUE);
3962						}
3963					}
3964				}
3965#endif /* DEV_SPLASH */
3966				break;
3967
3968			case RBT:
3969#ifndef SC_DISABLE_REBOOT
3970				if (enable_reboot && !(flags & SCGETC_CN))
3971					shutdown_nice(0);
3972#endif
3973				break;
3974
3975			case HALT:
3976#ifndef SC_DISABLE_REBOOT
3977				if (enable_reboot && !(flags & SCGETC_CN))
3978					shutdown_nice(RB_HALT);
3979#endif
3980				break;
3981
3982			case PDWN:
3983#ifndef SC_DISABLE_REBOOT
3984				if (enable_reboot && !(flags & SCGETC_CN))
3985					shutdown_nice(RB_HALT | RB_POWEROFF);
3986#endif
3987				break;
3988
3989			case SUSP:
3990				power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
3991				break;
3992			case STBY:
3993				power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
3994				break;
3995
3996			case DBG:
3997#ifndef SC_DISABLE_KDBKEY
3998				if (enable_kdbkey)
3999					kdb_break();
4000#endif
4001				break;
4002
4003			case PNC:
4004				if (enable_panic_key)
4005					panic("Forced by the panic key");
4006				break;
4007
4008			case NEXT:
4009				this_scr = scp->index;
4010				for (i = (this_scr - sc->first_vty + 1) %
4011					 sc->vtys;
4012				     sc->first_vty + i != this_scr;
4013				     i = (i + 1) % sc->vtys) {
4014					struct tty *tp =
4015					    SC_DEV(sc, sc->first_vty + i);
4016					if (tty_opened_ns(tp)) {
4017						sc_switch_scr(
4018						    scp->sc, sc->first_vty + i);
4019						break;
4020					}
4021				}
4022				break;
4023
4024			case PREV:
4025				this_scr = scp->index;
4026				for (i = (this_scr - sc->first_vty + sc->vtys -
4027					     1) %
4028					 sc->vtys;
4029				     sc->first_vty + i != this_scr;
4030				     i = (i + sc->vtys - 1) % sc->vtys) {
4031					struct tty *tp =
4032					    SC_DEV(sc, sc->first_vty + i);
4033					if (tty_opened_ns(tp)) {
4034						sc_switch_scr(
4035						    scp->sc, sc->first_vty + i);
4036						break;
4037					}
4038				}
4039				break;
4040
4041			default:
4042				if (KEYCHAR(c) >= F_SCR &&
4043				    KEYCHAR(c) <= L_SCR) {
4044					sc_switch_scr(scp->sc,
4045					    sc->first_vty + KEYCHAR(c) - F_SCR);
4046					break;
4047				}
4048				/* assert(c & FKEY) */
4049				if (!(sc->flags & SC_SCRN_BLANKED))
4050					return c;
4051				break;
4052			}
4053			/* goto next_code */
4054		} else {
4055			/* regular keys (maybe MKEY is set) */
4056#if !defined(SC_DISABLE_KDBKEY) && defined(KDB)
4057			if (enable_kdbkey)
4058				kdb_alt_break(c, &sc->sc_altbrk);
4059#endif
4060			if (!(sc->flags & SC_SCRN_BLANKED))
4061				return c;
4062		}
4063	}
4064
4065	goto next_code;
4066}
4067
4068static int
4069sctty_mmap(struct tty *tp, vm_ooffset_t offset, vm_paddr_t *paddr, int nprot,
4070    vm_memattr_t *memattr)
4071{
4072	scr_stat *scp;
4073
4074	scp = sc_get_stat(tp);
4075	if (scp != scp->sc->cur_scp)
4076		return -1;
4077	return vidd_mmap(scp->sc->adp, offset, paddr, nprot, memattr);
4078}
4079
4080static void
4081update_font(scr_stat *scp)
4082{
4083#ifndef SC_NO_FONT_LOADING
4084	/* load appropriate font */
4085	if (!(scp->status & GRAPHICS_MODE)) {
4086		if (!(scp->status & PIXEL_MODE) &&
4087		    ISFONTAVAIL(scp->sc->adp->va_flags)) {
4088			if (scp->font_size < 14) {
4089				if (scp->sc->fonts_loaded & FONT_8)
4090					sc_load_font(scp, 0, 8, 8,
4091					    scp->sc->font_8, 0, 256);
4092			} else if (scp->font_size >= 16) {
4093				if (scp->sc->fonts_loaded & FONT_16)
4094					sc_load_font(scp, 0, 16, 8,
4095					    scp->sc->font_16, 0, 256);
4096			} else {
4097				if (scp->sc->fonts_loaded & FONT_14)
4098					sc_load_font(scp, 0, 14, 8,
4099					    scp->sc->font_14, 0, 256);
4100			}
4101			/*
4102			 * FONT KLUDGE:
4103			 * This is an interim kludge to display correct font.
4104			 * Always use the font page #0 on the video plane 2.
4105			 * Somehow we cannot show the font in other font pages
4106			 * on some video cards... XXX
4107			 */
4108			sc_show_font(scp, 0);
4109		}
4110		mark_all(scp);
4111	}
4112#endif /* !SC_NO_FONT_LOADING */
4113}
4114
4115static int
4116save_kbd_state(scr_stat *scp)
4117{
4118	int state;
4119	int error;
4120
4121	error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
4122	if (error == ENOIOCTL)
4123		error = ENODEV;
4124	if (error == 0) {
4125		scp->status &= ~LOCK_MASK;
4126		scp->status |= state;
4127	}
4128	return error;
4129}
4130
4131static int
4132update_kbd_state(scr_stat *scp, int new_bits, int mask)
4133{
4134	int state;
4135	int error;
4136
4137	if (mask != LOCK_MASK) {
4138		error = kbdd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
4139		if (error == ENOIOCTL)
4140			error = ENODEV;
4141		if (error)
4142			return error;
4143		state &= ~mask;
4144		state |= new_bits & mask;
4145	} else {
4146		state = new_bits & LOCK_MASK;
4147	}
4148	error = kbdd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
4149	if (error == ENOIOCTL)
4150		error = ENODEV;
4151	return error;
4152}
4153
4154static int
4155update_kbd_leds(scr_stat *scp, int which)
4156{
4157	int error;
4158
4159	which &= LOCK_MASK;
4160	error = kbdd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
4161	if (error == ENOIOCTL)
4162		error = ENODEV;
4163	return error;
4164}
4165
4166int
4167set_mode(scr_stat *scp)
4168{
4169	video_info_t info;
4170
4171	/* reject unsupported mode */
4172	if (vidd_get_info(scp->sc->adp, scp->mode, &info))
4173		return 1;
4174
4175	/* if this vty is not currently showing, do nothing */
4176	if (scp != scp->sc->cur_scp)
4177		return 0;
4178
4179	/* setup video hardware for the given mode */
4180	vidd_set_mode(scp->sc->adp, scp->mode);
4181	scp->rndr->init(scp);
4182	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
4183	    (void *)scp->sc->adp->va_window, FALSE);
4184
4185	update_font(scp);
4186
4187	sc_set_border(scp, scp->border);
4188	sc_set_cursor_image(scp);
4189
4190	return 0;
4191}
4192
4193void
4194sc_set_border(scr_stat *scp, int color)
4195{
4196	SC_VIDEO_LOCK(scp->sc);
4197	(*scp->rndr->draw_border)(scp, color);
4198	SC_VIDEO_UNLOCK(scp->sc);
4199}
4200
4201#ifndef SC_NO_FONT_LOADING
4202void
4203sc_load_font(scr_stat *scp, int page, int size, int width, u_char *buf,
4204    int base, int count)
4205{
4206	sc_softc_t *sc;
4207
4208	sc = scp->sc;
4209	sc->font_loading_in_progress = TRUE;
4210	vidd_load_font(sc->adp, page, size, width, buf, base, count);
4211	sc->font_loading_in_progress = FALSE;
4212}
4213
4214void
4215sc_save_font(scr_stat *scp, int page, int size, int width, u_char *buf,
4216    int base, int count)
4217{
4218	sc_softc_t *sc;
4219
4220	sc = scp->sc;
4221	sc->font_loading_in_progress = TRUE;
4222	vidd_save_font(sc->adp, page, size, width, buf, base, count);
4223	sc->font_loading_in_progress = FALSE;
4224}
4225
4226void
4227sc_show_font(scr_stat *scp, int page)
4228{
4229	vidd_show_font(scp->sc->adp, page);
4230}
4231#endif /* !SC_NO_FONT_LOADING */
4232
4233void
4234sc_paste(scr_stat *scp, const u_char *p, int count)
4235{
4236	struct tty *tp;
4237	u_char *rmap;
4238
4239	tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
4240	if (!tty_opened_ns(tp))
4241		return;
4242	rmap = scp->sc->scr_rmap;
4243	for (; count > 0; --count)
4244		ttydisc_rint(tp, rmap[*p++], 0);
4245	ttydisc_rint_done(tp);
4246}
4247
4248void
4249sc_respond(scr_stat *scp, const u_char *p, int count, int wakeup)
4250{
4251	struct tty *tp;
4252
4253	tp = SC_DEV(scp->sc, scp->sc->cur_scp->index);
4254	if (!tty_opened_ns(tp))
4255		return;
4256	ttydisc_rint_simple(tp, p, count);
4257	if (wakeup) {
4258		/* XXX: we can't always call ttydisc_rint_done() here! */
4259		ttydisc_rint_done(tp);
4260	}
4261}
4262
4263/*
4264 * pitch is the divisor for 1.193182MHz PIT clock. By dividing 1193172 / pitch,
4265 * we convert it back to Hz.
4266 * duration is in ticks of 1/hz.
4267 */
4268void
4269sc_bell(scr_stat *scp, int pitch, int duration)
4270{
4271	if (cold || kdb_active || shutdown_in_progress || !enable_bell)
4272		return;
4273
4274	if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
4275		return;
4276
4277	if (scp->sc->flags & SC_VISUAL_BELL) {
4278		if (scp->sc->blink_in_progress)
4279			return;
4280		scp->sc->blink_in_progress = 3;
4281		if (scp != scp->sc->cur_scp)
4282			scp->sc->blink_in_progress += 2;
4283		blink_screen(scp->sc->cur_scp);
4284	} else if (duration != 0 && pitch != 0) {
4285		if (scp != scp->sc->cur_scp)
4286			pitch *= 2;
4287		sysbeep(1193182 / pitch, SBT_1S * duration / hz);
4288	}
4289}
4290
4291static int
4292sc_kattr(void)
4293{
4294	if (sc_console == NULL)
4295		return (SC_KERNEL_CONS_ATTR); /* for very early, before pcpu */
4296	return (sc_kattrtab[curcpu % nitems(sc_kattrtab)]);
4297}
4298
4299static void
4300blink_screen(void *arg)
4301{
4302	scr_stat *scp = arg;
4303	struct tty *tp;
4304
4305	if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
4306		scp->sc->blink_in_progress = 0;
4307		mark_all(scp);
4308		tp = SC_DEV(scp->sc, scp->index);
4309		if (tty_opened_ns(tp))
4310			sctty_outwakeup(tp);
4311		if (scp->sc->delayed_next_scr)
4312			sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
4313	} else {
4314		(*scp->rndr->draw)(scp, 0, scp->xsize * scp->ysize,
4315		    scp->sc->blink_in_progress & 1);
4316		scp->sc->blink_in_progress--;
4317		callout_reset_sbt(&scp->sc->cblink, SBT_1S / 15, 0,
4318		    blink_screen, scp, C_PREL(0));
4319	}
4320}
4321
4322/*
4323 * Until sc_attach_unit() gets called no dev structures will be available
4324 * to store the per-screen current status.  This is the case when the
4325 * kernel is initially booting and needs access to its console.  During
4326 * this early phase of booting the console's current status is kept in
4327 * one statically defined scr_stat structure, and any pointers to the
4328 * dev structures will be NULL.
4329 */
4330
4331static scr_stat *
4332sc_get_stat(struct tty *tp)
4333{
4334	if (tp == NULL)
4335		return (&main_console);
4336	return (SC_STAT(tp));
4337}
4338
4339/*
4340 * Allocate active keyboard. Try to allocate "kbdmux" keyboard first, and,
4341 * if found, add all non-busy keyboards to "kbdmux". Otherwise look for
4342 * any keyboard.
4343 */
4344
4345static int
4346sc_allocate_keyboard(sc_softc_t *sc, int unit)
4347{
4348	int idx0, idx;
4349	keyboard_t *k0, *k;
4350	keyboard_info_t ki;
4351
4352	idx0 =
4353	    kbd_allocate("kbdmux", -1, (void *)&sc->kbd, sckbdevent, sc);
4354	if (idx0 != -1) {
4355		k0 = kbd_get_keyboard(idx0);
4356
4357		for (idx = kbd_find_keyboard2("*", -1, 0); idx != -1;
4358		     idx = kbd_find_keyboard2("*", -1, idx + 1)) {
4359			k = kbd_get_keyboard(idx);
4360
4361			if (idx == idx0 || KBD_IS_BUSY(k))
4362				continue;
4363
4364			bzero(&ki, sizeof(ki));
4365			strcpy(ki.kb_name, k->kb_name);
4366			ki.kb_unit = k->kb_unit;
4367
4368			(void)kbdd_ioctl(k0, KBADDKBD, (caddr_t)&ki);
4369		}
4370	} else
4371		idx0 = kbd_allocate(
4372		    "*", unit, (void *)&sc->kbd, sckbdevent, sc);
4373
4374	return (idx0);
4375}
4376