xref: /freebsd/sys/dev/vt/vt_core.c (revision 4ce386ff25d77954b8cfa11534f632172e848244)
1 /*-
2  * Copyright (c) 2009, 2013 The FreeBSD Foundation
3  * All rights reserved.
4  *
5  * This software was developed by Ed Schouten under sponsorship from the
6  * FreeBSD Foundation.
7  *
8  * Portions of this software were developed by Oleksandr Rybalko
9  * under sponsorship from the FreeBSD Foundation.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
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  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35 
36 #include "opt_compat.h"
37 
38 #include <sys/param.h>
39 #include <sys/consio.h>
40 #include <sys/eventhandler.h>
41 #include <sys/fbio.h>
42 #include <sys/kbio.h>
43 #include <sys/kdb.h>
44 #include <sys/kernel.h>
45 #include <sys/lock.h>
46 #include <sys/malloc.h>
47 #include <sys/mutex.h>
48 #include <sys/power.h>
49 #include <sys/priv.h>
50 #include <sys/proc.h>
51 #include <sys/reboot.h>
52 #include <sys/systm.h>
53 #include <sys/terminal.h>
54 
55 #include <dev/kbd/kbdreg.h>
56 #include <dev/vt/vt.h>
57 
58 #if defined(__i386__) || defined(__amd64__)
59 #include <machine/psl.h>
60 #include <machine/frame.h>
61 #endif
62 
63 static tc_bell_t	vtterm_bell;
64 static tc_cursor_t	vtterm_cursor;
65 static tc_putchar_t	vtterm_putchar;
66 static tc_fill_t	vtterm_fill;
67 static tc_copy_t	vtterm_copy;
68 static tc_param_t	vtterm_param;
69 static tc_done_t	vtterm_done;
70 
71 static tc_cnprobe_t	vtterm_cnprobe;
72 static tc_cngetc_t	vtterm_cngetc;
73 
74 static tc_cngrab_t	vtterm_cngrab;
75 static tc_cnungrab_t	vtterm_cnungrab;
76 
77 static tc_opened_t	vtterm_opened;
78 static tc_ioctl_t	vtterm_ioctl;
79 static tc_mmap_t	vtterm_mmap;
80 
81 const struct terminal_class vt_termclass = {
82 	.tc_bell	= vtterm_bell,
83 	.tc_cursor	= vtterm_cursor,
84 	.tc_putchar	= vtterm_putchar,
85 	.tc_fill	= vtterm_fill,
86 	.tc_copy	= vtterm_copy,
87 	.tc_param	= vtterm_param,
88 	.tc_done	= vtterm_done,
89 
90 	.tc_cnprobe	= vtterm_cnprobe,
91 	.tc_cngetc	= vtterm_cngetc,
92 
93 	.tc_cngrab	= vtterm_cngrab,
94 	.tc_cnungrab	= vtterm_cnungrab,
95 
96 	.tc_opened	= vtterm_opened,
97 	.tc_ioctl	= vtterm_ioctl,
98 	.tc_mmap	= vtterm_mmap,
99 };
100 
101 /*
102  * Use a constant timer of 25 Hz to redraw the screen.
103  *
104  * XXX: In theory we should only fire up the timer when there is really
105  * activity. Unfortunately we cannot always start timers. We really
106  * don't want to process kernel messages synchronously, because it
107  * really slows down the system.
108  */
109 #define	VT_TIMERFREQ	25
110 
111 /* Bell pitch/duration. */
112 #define VT_BELLDURATION	((5 * hz + 99) / 100)
113 #define VT_BELLPITCH	800
114 
115 #define	VT_LOCK(vd)	mtx_lock(&(vd)->vd_lock)
116 #define	VT_UNLOCK(vd)	mtx_unlock(&(vd)->vd_lock)
117 #define	VT_LOCK_ASSERT(vd, what)	mtx_assert(&(vd)->vd_lock, what)
118 
119 #define	VT_UNIT(vw)	((vw)->vw_device->vd_unit * VT_MAXWINDOWS + \
120 			(vw)->vw_number)
121 
122 static SYSCTL_NODE(_kern, OID_AUTO, vt, CTLFLAG_RD, 0, "vt(9) parameters");
123 VT_SYSCTL_INT(enable_altgr, 1, "Enable AltGr key (Do not assume R.Alt as Alt)");
124 VT_SYSCTL_INT(enable_bell, 1, "Enable bell");
125 VT_SYSCTL_INT(debug, 0, "vt(9) debug level");
126 VT_SYSCTL_INT(deadtimer, 15, "Time to wait busy process in VT_PROCESS mode");
127 VT_SYSCTL_INT(suspendswitch, 1, "Switch to VT0 before suspend");
128 
129 /* Allow to disable some keyboard combinations. */
130 VT_SYSCTL_INT(kbd_halt, 1, "Enable halt keyboard combination.  "
131     "See kbdmap(5) to configure.");
132 VT_SYSCTL_INT(kbd_poweroff, 1, "Enable Power Off keyboard combination.  "
133     "See kbdmap(5) to configure.");
134 VT_SYSCTL_INT(kbd_reboot, 1, "Enable reboot keyboard combination.  "
135     "See kbdmap(5) to configure (typically Ctrl-Alt-Delete).");
136 VT_SYSCTL_INT(kbd_debug, 1, "Enable key combination to enter debugger.  "
137     "See kbdmap(5) to configure (typically Ctrl-Alt-Esc).");
138 VT_SYSCTL_INT(kbd_panic, 0, "Enable request to panic.  "
139     "See kbdmap(5) to configure.");
140 
141 static struct vt_device	vt_consdev;
142 static unsigned int vt_unit = 0;
143 static MALLOC_DEFINE(M_VT, "vt", "vt device");
144 struct vt_device *main_vd = &vt_consdev;
145 
146 /* Boot logo. */
147 extern unsigned int vt_logo_width;
148 extern unsigned int vt_logo_height;
149 extern unsigned int vt_logo_depth;
150 extern unsigned char vt_logo_image[];
151 
152 /* Font. */
153 extern struct vt_font vt_font_default;
154 #ifndef SC_NO_CUTPASTE
155 extern struct vt_mouse_cursor vt_default_mouse_pointer;
156 #endif
157 
158 static int signal_vt_rel(struct vt_window *);
159 static int signal_vt_acq(struct vt_window *);
160 static int finish_vt_rel(struct vt_window *, int, int *);
161 static int finish_vt_acq(struct vt_window *);
162 static int vt_window_switch(struct vt_window *);
163 static int vt_late_window_switch(struct vt_window *);
164 static int vt_proc_alive(struct vt_window *);
165 static void vt_resize(struct vt_device *);
166 static void vt_update_static(void *);
167 #ifndef SC_NO_CUTPASTE
168 static void vt_mouse_paste(void);
169 #endif
170 static void vt_suspend_handler(void *priv);
171 static void vt_resume_handler(void *priv);
172 
173 SET_DECLARE(vt_drv_set, struct vt_driver);
174 
175 #define _VTDEFH MAX(100, PIXEL_HEIGHT(VT_FB_DEFAULT_HEIGHT))
176 #define _VTDEFW MAX(200, PIXEL_WIDTH(VT_FB_DEFAULT_WIDTH))
177 
178 static struct terminal	vt_consterm;
179 static struct vt_window	vt_conswindow;
180 static struct vt_device	vt_consdev = {
181 	.vd_driver = NULL,
182 	.vd_softc = NULL,
183 	.vd_prev_driver = NULL,
184 	.vd_prev_softc = NULL,
185 	.vd_flags = VDF_INVALID,
186 	.vd_windows = { [VT_CONSWINDOW] =  &vt_conswindow, },
187 	.vd_curwindow = &vt_conswindow,
188 	.vd_kbstate = 0,
189 
190 #ifndef SC_NO_CUTPASTE
191 	.vd_pastebuf = {
192 		.vpb_buf = NULL,
193 		.vpb_bufsz = 0,
194 		.vpb_len = 0
195 	},
196 	.vd_mcursor = &vt_default_mouse_pointer,
197 	.vd_mcursor_fg = TC_WHITE,
198 	.vd_mcursor_bg = TC_BLACK,
199 #endif
200 };
201 static term_char_t vt_constextbuf[(_VTDEFW) * (VBF_DEFAULT_HISTORY_SIZE)];
202 static term_char_t *vt_constextbufrows[VBF_DEFAULT_HISTORY_SIZE];
203 static struct vt_window	vt_conswindow = {
204 	.vw_number = VT_CONSWINDOW,
205 	.vw_flags = VWF_CONSOLE,
206 	.vw_buf = {
207 		.vb_buffer = &vt_constextbuf[0],
208 		.vb_rows = &vt_constextbufrows[0],
209 		.vb_history_size = VBF_DEFAULT_HISTORY_SIZE,
210 		.vb_curroffset = 0,
211 		.vb_roffset = 0,
212 		.vb_flags = VBF_STATIC,
213 		.vb_mark_start = {.tp_row = 0, .tp_col = 0,},
214 		.vb_mark_end = {.tp_row = 0, .tp_col = 0,},
215 		.vb_scr_size = {
216 			.tp_row = _VTDEFH,
217 			.tp_col = _VTDEFW,
218 		},
219 	},
220 	.vw_device = &vt_consdev,
221 	.vw_terminal = &vt_consterm,
222 	.vw_kbdmode = K_XLATE,
223 	.vw_grabbed = 0,
224 };
225 static struct terminal vt_consterm = {
226 	.tm_class = &vt_termclass,
227 	.tm_softc = &vt_conswindow,
228 	.tm_flags = TF_CONS,
229 };
230 static struct consdev vt_consterm_consdev = {
231 	.cn_ops = &termcn_cnops,
232 	.cn_arg = &vt_consterm,
233 	.cn_name = "ttyv0",
234 };
235 
236 /* Add to set of consoles. */
237 DATA_SET(cons_set, vt_consterm_consdev);
238 
239 /*
240  * Right after kmem is done to allow early drivers to use locking and allocate
241  * memory.
242  */
243 SYSINIT(vt_update_static, SI_SUB_KMEM, SI_ORDER_ANY, vt_update_static,
244     &vt_consdev);
245 /* Delay until all devices attached, to not waste time. */
246 SYSINIT(vt_early_cons, SI_SUB_INT_CONFIG_HOOKS, SI_ORDER_ANY, vt_upgrade,
247     &vt_consdev);
248 
249 /* Initialize locks/mem depended members. */
250 static void
251 vt_update_static(void *dummy)
252 {
253 
254 	if (!vty_enabled(VTY_VT))
255 		return;
256 	if (main_vd->vd_driver != NULL)
257 		printf("VT: running with driver \"%s\".\n",
258 		    main_vd->vd_driver->vd_name);
259 	else
260 		printf("VT: init without driver.\n");
261 
262 	mtx_init(&main_vd->vd_lock, "vtdev", NULL, MTX_DEF);
263 	cv_init(&main_vd->vd_winswitch, "vtwswt");
264 }
265 
266 static void
267 vt_schedule_flush(struct vt_device *vd, int ms)
268 {
269 
270 	if (ms <= 0)
271 		/* Default to initial value. */
272 		ms = 1000 / VT_TIMERFREQ;
273 
274 	callout_schedule(&vd->vd_timer, hz / (1000 / ms));
275 }
276 
277 static void
278 vt_resume_flush_timer(struct vt_device *vd, int ms)
279 {
280 
281 	if (!(vd->vd_flags & VDF_ASYNC) ||
282 	    !atomic_cmpset_int(&vd->vd_timer_armed, 0, 1))
283 		return;
284 
285 	vt_schedule_flush(vd, ms);
286 }
287 
288 static void
289 vt_suspend_flush_timer(struct vt_device *vd)
290 {
291 	/*
292 	 * As long as this function is called locked, callout_stop()
293 	 * has the same effect like callout_drain() with regard to
294 	 * preventing the callback function from executing.
295 	 */
296 	VT_LOCK_ASSERT(vd, MA_OWNED);
297 
298 	if (!(vd->vd_flags & VDF_ASYNC) ||
299 	    !atomic_cmpset_int(&vd->vd_timer_armed, 1, 0))
300 		return;
301 
302 	callout_stop(&vd->vd_timer);
303 }
304 
305 static void
306 vt_switch_timer(void *arg)
307 {
308 
309 	vt_late_window_switch((struct vt_window *)arg);
310 }
311 
312 static int
313 vt_save_kbd_mode(struct vt_window *vw, keyboard_t *kbd)
314 {
315 	int mode, ret;
316 
317 	mode = 0;
318 	ret = kbdd_ioctl(kbd, KDGKBMODE, (caddr_t)&mode);
319 	if (ret == ENOIOCTL)
320 		ret = ENODEV;
321 	if (ret != 0)
322 		return (ret);
323 
324 	vw->vw_kbdmode = mode;
325 
326 	return (0);
327 }
328 
329 static int
330 vt_update_kbd_mode(struct vt_window *vw, keyboard_t *kbd)
331 {
332 	int ret;
333 
334 	ret = kbdd_ioctl(kbd, KDSKBMODE, (caddr_t)&vw->vw_kbdmode);
335 	if (ret == ENOIOCTL)
336 		ret = ENODEV;
337 
338 	return (ret);
339 }
340 
341 static int
342 vt_save_kbd_state(struct vt_window *vw, keyboard_t *kbd)
343 {
344 	int state, ret;
345 
346 	state = 0;
347 	ret = kbdd_ioctl(kbd, KDGKBSTATE, (caddr_t)&state);
348 	if (ret == ENOIOCTL)
349 		ret = ENODEV;
350 	if (ret != 0)
351 		return (ret);
352 
353 	vw->vw_kbdstate &= ~LOCK_MASK;
354 	vw->vw_kbdstate |= state & LOCK_MASK;
355 
356 	return (0);
357 }
358 
359 static int
360 vt_update_kbd_state(struct vt_window *vw, keyboard_t *kbd)
361 {
362 	int state, ret;
363 
364 	state = vw->vw_kbdstate & LOCK_MASK;
365 	ret = kbdd_ioctl(kbd, KDSKBSTATE, (caddr_t)&state);
366 	if (ret == ENOIOCTL)
367 		ret = ENODEV;
368 
369 	return (ret);
370 }
371 
372 static int
373 vt_save_kbd_leds(struct vt_window *vw, keyboard_t *kbd)
374 {
375 	int leds, ret;
376 
377 	leds = 0;
378 	ret = kbdd_ioctl(kbd, KDGETLED, (caddr_t)&leds);
379 	if (ret == ENOIOCTL)
380 		ret = ENODEV;
381 	if (ret != 0)
382 		return (ret);
383 
384 	vw->vw_kbdstate &= ~LED_MASK;
385 	vw->vw_kbdstate |= leds & LED_MASK;
386 
387 	return (0);
388 }
389 
390 static int
391 vt_update_kbd_leds(struct vt_window *vw, keyboard_t *kbd)
392 {
393 	int leds, ret;
394 
395 	leds = vw->vw_kbdstate & LED_MASK;
396 	ret = kbdd_ioctl(kbd, KDSETLED, (caddr_t)&leds);
397 	if (ret == ENOIOCTL)
398 		ret = ENODEV;
399 
400 	return (ret);
401 }
402 
403 static int
404 vt_window_preswitch(struct vt_window *vw, struct vt_window *curvw)
405 {
406 
407 	DPRINTF(40, "%s\n", __func__);
408 	curvw->vw_switch_to = vw;
409 	/* Set timer to allow switch in case when process hang. */
410 	callout_reset(&vw->vw_proc_dead_timer, hz * vt_deadtimer,
411 	    vt_switch_timer, (void *)vw);
412 	/* Notify process about vt switch attempt. */
413 	DPRINTF(30, "%s: Notify process.\n", __func__);
414 	signal_vt_rel(curvw);
415 
416 	return (0);
417 }
418 
419 static int
420 vt_window_postswitch(struct vt_window *vw)
421 {
422 
423 	signal_vt_acq(vw);
424 	return (0);
425 }
426 
427 /* vt_late_window_switch will done VT switching for regular case. */
428 static int
429 vt_late_window_switch(struct vt_window *vw)
430 {
431 	int ret;
432 
433 	callout_stop(&vw->vw_proc_dead_timer);
434 
435 	ret = vt_window_switch(vw);
436 	if (ret)
437 		return (ret);
438 
439 	/* Notify owner process about terminal availability. */
440 	if (vw->vw_smode.mode == VT_PROCESS) {
441 		ret = vt_window_postswitch(vw);
442 	}
443 	return (ret);
444 }
445 
446 /* Switch window. */
447 static int
448 vt_proc_window_switch(struct vt_window *vw)
449 {
450 	struct vt_window *curvw;
451 	struct vt_device *vd;
452 	int ret;
453 
454 	vd = vw->vw_device;
455 	curvw = vd->vd_curwindow;
456 
457 	if (curvw->vw_flags & VWF_VTYLOCK)
458 		return (EBUSY);
459 
460 	/* Ask current process permission to switch away. */
461 	if (curvw->vw_smode.mode == VT_PROCESS) {
462 		DPRINTF(30, "%s: VT_PROCESS ", __func__);
463 		if (vt_proc_alive(curvw) == FALSE) {
464 			DPRINTF(30, "Dead. Cleaning.");
465 			/* Dead */
466 		} else {
467 			DPRINTF(30, "%s: Signaling process.\n", __func__);
468 			/* Alive, try to ask him. */
469 			ret = vt_window_preswitch(vw, curvw);
470 			/* Wait for process answer or timeout. */
471 			return (ret);
472 		}
473 		DPRINTF(30, "\n");
474 	}
475 
476 	ret = vt_late_window_switch(vw);
477 	return (ret);
478 }
479 
480 /* Switch window ignoring process locking. */
481 static int
482 vt_window_switch(struct vt_window *vw)
483 {
484 	struct vt_device *vd = vw->vw_device;
485 	struct vt_window *curvw = vd->vd_curwindow;
486 	keyboard_t *kbd;
487 
488 	VT_LOCK(vd);
489 	if (curvw == vw) {
490 		/* Nothing to do. */
491 		VT_UNLOCK(vd);
492 		return (0);
493 	}
494 	if (!(vw->vw_flags & (VWF_OPENED|VWF_CONSOLE))) {
495 		VT_UNLOCK(vd);
496 		return (EINVAL);
497 	}
498 
499 	vt_suspend_flush_timer(vd);
500 
501 	vd->vd_curwindow = vw;
502 	vd->vd_flags |= VDF_INVALID;
503 	cv_broadcast(&vd->vd_winswitch);
504 	VT_UNLOCK(vd);
505 
506 	if (vd->vd_driver->vd_postswitch)
507 		vd->vd_driver->vd_postswitch(vd);
508 
509 	vt_resume_flush_timer(vd, 0);
510 
511 	/* Restore per-window keyboard mode. */
512 	mtx_lock(&Giant);
513 	kbd = kbd_get_keyboard(vd->vd_keyboard);
514 	if (kbd != NULL) {
515 		if (curvw->vw_kbdmode == K_XLATE)
516 			vt_save_kbd_state(curvw, kbd);
517 
518 		vt_update_kbd_mode(vw, kbd);
519 		vt_update_kbd_state(vw, kbd);
520 	}
521 	mtx_unlock(&Giant);
522 	DPRINTF(10, "%s(ttyv%d) done\n", __func__, vw->vw_number);
523 
524 	return (0);
525 }
526 
527 static inline void
528 vt_termsize(struct vt_device *vd, struct vt_font *vf, term_pos_t *size)
529 {
530 
531 	size->tp_row = vd->vd_height;
532 	size->tp_col = vd->vd_width;
533 	if (vf != NULL) {
534 		size->tp_row /= vf->vf_height;
535 		size->tp_col /= vf->vf_width;
536 	}
537 }
538 
539 static inline void
540 vt_winsize(struct vt_device *vd, struct vt_font *vf, struct winsize *size)
541 {
542 
543 	size->ws_row = size->ws_ypixel = vd->vd_height;
544 	size->ws_col = size->ws_xpixel = vd->vd_width;
545 	if (vf != NULL) {
546 		size->ws_row /= vf->vf_height;
547 		size->ws_col /= vf->vf_width;
548 	}
549 }
550 
551 static inline void
552 vt_compute_drawable_area(struct vt_window *vw)
553 {
554 	struct vt_device *vd;
555 	struct vt_font *vf;
556 
557 	vd = vw->vw_device;
558 
559 	if (vw->vw_font == NULL) {
560 		vw->vw_draw_area.tr_begin.tp_col = 0;
561 		vw->vw_draw_area.tr_begin.tp_row = 0;
562 		vw->vw_draw_area.tr_end.tp_col = vd->vd_width;
563 		vw->vw_draw_area.tr_end.tp_row = vd->vd_height;
564 		return;
565 	}
566 
567 	vf = vw->vw_font;
568 
569 	/*
570 	 * Compute the drawable area, so that the text is centered on
571 	 * the screen.
572 	 */
573 
574 	vw->vw_draw_area.tr_begin.tp_col = (vd->vd_width % vf->vf_width) / 2;
575 	vw->vw_draw_area.tr_begin.tp_row = (vd->vd_height % vf->vf_height) / 2;
576 	vw->vw_draw_area.tr_end.tp_col = vw->vw_draw_area.tr_begin.tp_col +
577 	    vd->vd_width / vf->vf_width * vf->vf_width;
578 	vw->vw_draw_area.tr_end.tp_row = vw->vw_draw_area.tr_begin.tp_row +
579 	    vd->vd_height / vf->vf_height * vf->vf_height;
580 }
581 
582 static void
583 vt_scroll(struct vt_window *vw, int offset, int whence)
584 {
585 	int diff;
586 	term_pos_t size;
587 
588 	if ((vw->vw_flags & VWF_SCROLL) == 0)
589 		return;
590 
591 	vt_termsize(vw->vw_device, vw->vw_font, &size);
592 
593 	diff = vthistory_seek(&vw->vw_buf, offset, whence);
594 	if (diff)
595 		vw->vw_device->vd_flags |= VDF_INVALID;
596 	vt_resume_flush_timer(vw->vw_device, 0);
597 }
598 
599 static int
600 vt_machine_kbdevent(int c)
601 {
602 
603 	switch (c) {
604 	case SPCLKEY | DBG: /* kbdmap(5) keyword `debug`. */
605 		if (vt_kbd_debug)
606 			kdb_enter(KDB_WHY_BREAK, "manual escape to debugger");
607 		return (1);
608 	case SPCLKEY | HALT: /* kbdmap(5) keyword `halt`. */
609 		if (vt_kbd_halt)
610 			shutdown_nice(RB_HALT);
611 		return (1);
612 	case SPCLKEY | PASTE: /* kbdmap(5) keyword `paste`. */
613 #ifndef SC_NO_CUTPASTE
614 		/* Insert text from cut-paste buffer. */
615 		vt_mouse_paste();
616 #endif
617 		break;
618 	case SPCLKEY | PDWN: /* kbdmap(5) keyword `pdwn`. */
619 		if (vt_kbd_poweroff)
620 			shutdown_nice(RB_HALT|RB_POWEROFF);
621 		return (1);
622 	case SPCLKEY | PNC: /* kbdmap(5) keyword `panic`. */
623 		/*
624 		 * Request to immediate panic if sysctl
625 		 * kern.vt.enable_panic_key allow it.
626 		 */
627 		if (vt_kbd_panic)
628 			panic("Forced by the panic key");
629 		return (1);
630 	case SPCLKEY | RBT: /* kbdmap(5) keyword `boot`. */
631 		if (vt_kbd_reboot)
632 			shutdown_nice(RB_AUTOBOOT);
633 		return (1);
634 	case SPCLKEY | SPSC: /* kbdmap(5) keyword `spsc`. */
635 		/* Force activatation/deactivation of the screen saver. */
636 		/* TODO */
637 		return (1);
638 	case SPCLKEY | STBY: /* XXX Not present in kbdcontrol parser. */
639 		/* Put machine into Stand-By mode. */
640 		power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
641 		return (1);
642 	case SPCLKEY | SUSP: /* kbdmap(5) keyword `susp`. */
643 		/* Suspend machine. */
644 		power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
645 		return (1);
646 	};
647 
648 	return (0);
649 }
650 
651 static void
652 vt_scrollmode_kbdevent(struct vt_window *vw, int c, int console)
653 {
654 	struct vt_device *vd;
655 	term_pos_t size;
656 
657 	vd = vw->vw_device;
658 	/* Only special keys handled in ScrollLock mode */
659 	if ((c & SPCLKEY) == 0)
660 		return;
661 
662 	c &= ~SPCLKEY;
663 
664 	if (console == 0) {
665 		if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) {
666 			vw = vd->vd_windows[c - F_SCR];
667 			if (vw != NULL)
668 				vt_proc_window_switch(vw);
669 			return;
670 		}
671 		VT_LOCK(vd);
672 	}
673 
674 	switch (c) {
675 	case SLK: {
676 		/* Turn scrolling off. */
677 		vt_scroll(vw, 0, VHS_END);
678 		VTBUF_SLCK_DISABLE(&vw->vw_buf);
679 		vw->vw_flags &= ~VWF_SCROLL;
680 		break;
681 	}
682 	case FKEY | F(49): /* Home key. */
683 		vt_scroll(vw, 0, VHS_SET);
684 		break;
685 	case FKEY | F(50): /* Arrow up. */
686 		vt_scroll(vw, -1, VHS_CUR);
687 		break;
688 	case FKEY | F(51): /* Page up. */
689 		vt_termsize(vd, vw->vw_font, &size);
690 		vt_scroll(vw, -size.tp_row, VHS_CUR);
691 		break;
692 	case FKEY | F(57): /* End key. */
693 		vt_scroll(vw, 0, VHS_END);
694 		break;
695 	case FKEY | F(58): /* Arrow down. */
696 		vt_scroll(vw, 1, VHS_CUR);
697 		break;
698 	case FKEY | F(59): /* Page down. */
699 		vt_termsize(vd, vw->vw_font, &size);
700 		vt_scroll(vw, size.tp_row, VHS_CUR);
701 		break;
702 	}
703 
704 	if (console == 0)
705 		VT_UNLOCK(vd);
706 }
707 
708 static int
709 vt_processkey(keyboard_t *kbd, struct vt_device *vd, int c)
710 {
711 	struct vt_window *vw = vd->vd_curwindow;
712 
713 #if VT_ALT_TO_ESC_HACK
714 	if (c & RELKEY) {
715 		switch (c & ~RELKEY) {
716 		case (SPCLKEY | RALT):
717 			if (vt_enable_altgr != 0)
718 				break;
719 		case (SPCLKEY | LALT):
720 			vd->vd_kbstate &= ~ALKED;
721 		}
722 		/* Other keys ignored for RELKEY event. */
723 		return (0);
724 	} else {
725 		switch (c & ~RELKEY) {
726 		case (SPCLKEY | RALT):
727 			if (vt_enable_altgr != 0)
728 				break;
729 		case (SPCLKEY | LALT):
730 			vd->vd_kbstate |= ALKED;
731 		}
732 	}
733 #else
734 	if (c & RELKEY)
735 		/* Other keys ignored for RELKEY event. */
736 		return (0);
737 #endif
738 
739 	if (vt_machine_kbdevent(c))
740 		return (0);
741 
742 	if (vw->vw_flags & VWF_SCROLL) {
743 		vt_scrollmode_kbdevent(vw, c, 0/* Not a console */);
744 		/* Scroll mode keys handled, nothing to do more. */
745 		return (0);
746 	}
747 
748 	if (c & SPCLKEY) {
749 		c &= ~SPCLKEY;
750 
751 		if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) {
752 			vw = vd->vd_windows[c - F_SCR];
753 			if (vw != NULL)
754 				vt_proc_window_switch(vw);
755 			return (0);
756 		}
757 
758 		switch (c) {
759 		case NEXT:
760 			/* Switch to next VT. */
761 			c = (vw->vw_number + 1) % VT_MAXWINDOWS;
762 			vw = vd->vd_windows[c];
763 			if (vw != NULL)
764 				vt_proc_window_switch(vw);
765 			return (0);
766 		case PREV:
767 			/* Switch to previous VT. */
768 			c = (vw->vw_number - 1) % VT_MAXWINDOWS;
769 			vw = vd->vd_windows[c];
770 			if (vw != NULL)
771 				vt_proc_window_switch(vw);
772 			return (0);
773 		case SLK: {
774 			vt_save_kbd_state(vw, kbd);
775 			VT_LOCK(vd);
776 			if (vw->vw_kbdstate & SLKED) {
777 				/* Turn scrolling on. */
778 				vw->vw_flags |= VWF_SCROLL;
779 				VTBUF_SLCK_ENABLE(&vw->vw_buf);
780 			} else {
781 				/* Turn scrolling off. */
782 				vw->vw_flags &= ~VWF_SCROLL;
783 				VTBUF_SLCK_DISABLE(&vw->vw_buf);
784 				vt_scroll(vw, 0, VHS_END);
785 			}
786 			VT_UNLOCK(vd);
787 			break;
788 		}
789 		case FKEY | F(1):  case FKEY | F(2):  case FKEY | F(3):
790 		case FKEY | F(4):  case FKEY | F(5):  case FKEY | F(6):
791 		case FKEY | F(7):  case FKEY | F(8):  case FKEY | F(9):
792 		case FKEY | F(10): case FKEY | F(11): case FKEY | F(12):
793 			/* F1 through F12 keys. */
794 			terminal_input_special(vw->vw_terminal,
795 			    TKEY_F1 + c - (FKEY | F(1)));
796 			break;
797 		case FKEY | F(49): /* Home key. */
798 			terminal_input_special(vw->vw_terminal, TKEY_HOME);
799 			break;
800 		case FKEY | F(50): /* Arrow up. */
801 			terminal_input_special(vw->vw_terminal, TKEY_UP);
802 			break;
803 		case FKEY | F(51): /* Page up. */
804 			terminal_input_special(vw->vw_terminal, TKEY_PAGE_UP);
805 			break;
806 		case FKEY | F(53): /* Arrow left. */
807 			terminal_input_special(vw->vw_terminal, TKEY_LEFT);
808 			break;
809 		case FKEY | F(55): /* Arrow right. */
810 			terminal_input_special(vw->vw_terminal, TKEY_RIGHT);
811 			break;
812 		case FKEY | F(57): /* End key. */
813 			terminal_input_special(vw->vw_terminal, TKEY_END);
814 			break;
815 		case FKEY | F(58): /* Arrow down. */
816 			terminal_input_special(vw->vw_terminal, TKEY_DOWN);
817 			break;
818 		case FKEY | F(59): /* Page down. */
819 			terminal_input_special(vw->vw_terminal, TKEY_PAGE_DOWN);
820 			break;
821 		case FKEY | F(60): /* Insert key. */
822 			terminal_input_special(vw->vw_terminal, TKEY_INSERT);
823 			break;
824 		case FKEY | F(61): /* Delete key. */
825 			terminal_input_special(vw->vw_terminal, TKEY_DELETE);
826 			break;
827 		}
828 	} else if (KEYFLAGS(c) == 0) {
829 		/* Don't do UTF-8 conversion when doing raw mode. */
830 		if (vw->vw_kbdmode == K_XLATE) {
831 #if VT_ALT_TO_ESC_HACK
832 			if (vd->vd_kbstate & ALKED) {
833 				/*
834 				 * Prepend ESC sequence if one of ALT keys down.
835 				 */
836 				terminal_input_char(vw->vw_terminal, 0x1b);
837 			}
838 #endif
839 #if defined(KDB)
840 			kdb_alt_break(c, &vd->vd_altbrk);
841 #endif
842 			terminal_input_char(vw->vw_terminal, KEYCHAR(c));
843 		} else
844 			terminal_input_raw(vw->vw_terminal, c);
845 	}
846 	return (0);
847 }
848 
849 static int
850 vt_kbdevent(keyboard_t *kbd, int event, void *arg)
851 {
852 	struct vt_device *vd = arg;
853 	int c;
854 
855 	switch (event) {
856 	case KBDIO_KEYINPUT:
857 		break;
858 	case KBDIO_UNLOADING:
859 		mtx_lock(&Giant);
860 		vd->vd_keyboard = -1;
861 		kbd_release(kbd, (void *)vd);
862 		mtx_unlock(&Giant);
863 		return (0);
864 	default:
865 		return (EINVAL);
866 	}
867 
868 	while ((c = kbdd_read_char(kbd, 0)) != NOKEY)
869 		vt_processkey(kbd, vd, c);
870 
871 	return (0);
872 }
873 
874 static int
875 vt_allocate_keyboard(struct vt_device *vd)
876 {
877 	int		 idx0, idx;
878 	keyboard_t	*k0, *k;
879 	keyboard_info_t	 ki;
880 
881 	idx0 = kbd_allocate("kbdmux", -1, vd, vt_kbdevent, vd);
882 	if (idx0 >= 0) {
883 		DPRINTF(20, "%s: kbdmux allocated, idx = %d\n", __func__, idx0);
884 		k0 = kbd_get_keyboard(idx0);
885 
886 		for (idx = kbd_find_keyboard2("*", -1, 0);
887 		     idx != -1;
888 		     idx = kbd_find_keyboard2("*", -1, idx + 1)) {
889 			k = kbd_get_keyboard(idx);
890 
891 			if (idx == idx0 || KBD_IS_BUSY(k))
892 				continue;
893 
894 			bzero(&ki, sizeof(ki));
895 			strncpy(ki.kb_name, k->kb_name, sizeof(ki.kb_name));
896 			ki.kb_name[sizeof(ki.kb_name) - 1] = '\0';
897 			ki.kb_unit = k->kb_unit;
898 
899 			kbdd_ioctl(k0, KBADDKBD, (caddr_t) &ki);
900 		}
901 	} else {
902 		DPRINTF(20, "%s: no kbdmux allocated\n", __func__);
903 		idx0 = kbd_allocate("*", -1, vd, vt_kbdevent, vd);
904 		if (idx0 < 0) {
905 			DPRINTF(10, "%s: No keyboard found.\n", __func__);
906 			return (-1);
907 		}
908 	}
909 	vd->vd_keyboard = idx0;
910 	DPRINTF(20, "%s: vd_keyboard = %d\n", __func__, vd->vd_keyboard);
911 
912 	return (idx0);
913 }
914 
915 static void
916 vtterm_bell(struct terminal *tm)
917 {
918 	struct vt_window *vw = tm->tm_softc;
919 	struct vt_device *vd = vw->vw_device;
920 
921 	if (!vt_enable_bell)
922 		return;
923 
924 	if (vd->vd_flags & VDF_QUIET_BELL)
925 		return;
926 
927 	sysbeep(1193182 / VT_BELLPITCH, VT_BELLDURATION);
928 }
929 
930 static void
931 vtterm_beep(struct terminal *tm, u_int param)
932 {
933 	u_int freq, period;
934 
935 	if (!vt_enable_bell)
936 		return;
937 
938 	if ((param == 0) || ((param & 0xffff) == 0)) {
939 		vtterm_bell(tm);
940 		return;
941 	}
942 
943 	period = ((param >> 16) & 0xffff) * hz / 1000;
944 	freq = 1193182 / (param & 0xffff);
945 
946 	sysbeep(freq, period);
947 }
948 
949 static void
950 vtterm_cursor(struct terminal *tm, const term_pos_t *p)
951 {
952 	struct vt_window *vw = tm->tm_softc;
953 
954 	vtbuf_cursor_position(&vw->vw_buf, p);
955 	vt_resume_flush_timer(vw->vw_device, 0);
956 }
957 
958 static void
959 vtterm_putchar(struct terminal *tm, const term_pos_t *p, term_char_t c)
960 {
961 	struct vt_window *vw = tm->tm_softc;
962 
963 	vtbuf_putchar(&vw->vw_buf, p, c);
964 	vt_resume_flush_timer(vw->vw_device, 0);
965 }
966 
967 static void
968 vtterm_fill(struct terminal *tm, const term_rect_t *r, term_char_t c)
969 {
970 	struct vt_window *vw = tm->tm_softc;
971 
972 	vtbuf_fill_locked(&vw->vw_buf, r, c);
973 	vt_resume_flush_timer(vw->vw_device, 0);
974 }
975 
976 static void
977 vtterm_copy(struct terminal *tm, const term_rect_t *r,
978     const term_pos_t *p)
979 {
980 	struct vt_window *vw = tm->tm_softc;
981 
982 	vtbuf_copy(&vw->vw_buf, r, p);
983 	vt_resume_flush_timer(vw->vw_device, 0);
984 }
985 
986 static void
987 vtterm_param(struct terminal *tm, int cmd, unsigned int arg)
988 {
989 	struct vt_window *vw = tm->tm_softc;
990 
991 	switch (cmd) {
992 	case TP_SHOWCURSOR:
993 		vtbuf_cursor_visibility(&vw->vw_buf, arg);
994 		vt_resume_flush_timer(vw->vw_device, 0);
995 		break;
996 	case TP_MOUSE:
997 		vw->vw_mouse_level = arg;
998 		break;
999 	}
1000 }
1001 
1002 void
1003 vt_determine_colors(term_char_t c, int cursor,
1004     term_color_t *fg, term_color_t *bg)
1005 {
1006 	term_color_t tmp;
1007 	int invert;
1008 
1009 	invert = 0;
1010 
1011 	*fg = TCHAR_FGCOLOR(c);
1012 	if (TCHAR_FORMAT(c) & TF_BOLD)
1013 		*fg = TCOLOR_LIGHT(*fg);
1014 	*bg = TCHAR_BGCOLOR(c);
1015 
1016 	if (TCHAR_FORMAT(c) & TF_REVERSE)
1017 		invert ^= 1;
1018 	if (cursor)
1019 		invert ^= 1;
1020 
1021 	if (invert) {
1022 		tmp = *fg;
1023 		*fg = *bg;
1024 		*bg = tmp;
1025 	}
1026 }
1027 
1028 #ifndef SC_NO_CUTPASTE
1029 int
1030 vt_is_cursor_in_area(const struct vt_device *vd, const term_rect_t *area)
1031 {
1032 	unsigned int mx, my, x1, y1, x2, y2;
1033 
1034 	/*
1035 	 * We use the cursor position saved during the current refresh,
1036 	 * in case the cursor moved since.
1037 	 */
1038 	mx = vd->vd_mx_drawn + vd->vd_curwindow->vw_draw_area.tr_begin.tp_col;
1039 	my = vd->vd_my_drawn + vd->vd_curwindow->vw_draw_area.tr_begin.tp_row;
1040 
1041 	x1 = area->tr_begin.tp_col;
1042 	y1 = area->tr_begin.tp_row;
1043 	x2 = area->tr_end.tp_col;
1044 	y2 = area->tr_end.tp_row;
1045 
1046 	if (((mx >= x1 && x2 - 1 >= mx) ||
1047 	     (mx < x1 && mx + vd->vd_mcursor->width >= x1)) &&
1048 	    ((my >= y1 && y2 - 1 >= my) ||
1049 	     (my < y1 && my + vd->vd_mcursor->height >= y1)))
1050 		return (1);
1051 
1052 	return (0);
1053 }
1054 
1055 static void
1056 vt_mark_mouse_position_as_dirty(struct vt_device *vd)
1057 {
1058 	term_rect_t area;
1059 	struct vt_window *vw;
1060 	struct vt_font *vf;
1061 	int x, y;
1062 
1063 	vw = vd->vd_curwindow;
1064 	vf = vw->vw_font;
1065 
1066 	x = vd->vd_mx_drawn;
1067 	y = vd->vd_my_drawn;
1068 
1069 	if (vf != NULL) {
1070 		area.tr_begin.tp_col = x / vf->vf_width;
1071 		area.tr_begin.tp_row = y / vf->vf_height;
1072 		area.tr_end.tp_col =
1073 		    ((x + vd->vd_mcursor->width) / vf->vf_width) + 1;
1074 		area.tr_end.tp_row =
1075 		    ((y + vd->vd_mcursor->height) / vf->vf_height) + 1;
1076 	} else {
1077 		/*
1078 		 * No font loaded (ie. vt_vga operating in textmode).
1079 		 *
1080 		 * FIXME: This fake area needs to be revisited once the
1081 		 * mouse cursor is supported in vt_vga's textmode.
1082 		 */
1083 		area.tr_begin.tp_col = x;
1084 		area.tr_begin.tp_row = y;
1085 		area.tr_end.tp_col = x + 2;
1086 		area.tr_end.tp_row = y + 2;
1087 	}
1088 
1089 	vtbuf_dirty(&vw->vw_buf, &area);
1090 }
1091 #endif
1092 
1093 static int
1094 vt_flush(struct vt_device *vd)
1095 {
1096 	struct vt_window *vw;
1097 	struct vt_font *vf;
1098 	term_rect_t tarea;
1099 	term_pos_t size;
1100 #ifndef SC_NO_CUTPASTE
1101 	int cursor_was_shown, cursor_moved;
1102 #endif
1103 
1104 	vw = vd->vd_curwindow;
1105 	if (vw == NULL)
1106 		return (0);
1107 
1108 	if (vd->vd_flags & VDF_SPLASH || vw->vw_flags & VWF_BUSY)
1109 		return (0);
1110 
1111 	vf = vw->vw_font;
1112 	if (((vd->vd_flags & VDF_TEXTMODE) == 0) && (vf == NULL))
1113 		return (0);
1114 
1115 #ifndef SC_NO_CUTPASTE
1116 	cursor_was_shown = vd->vd_mshown;
1117 	cursor_moved = (vd->vd_mx != vd->vd_mx_drawn ||
1118 	    vd->vd_my != vd->vd_my_drawn);
1119 
1120 	/* Check if the cursor should be displayed or not. */
1121 	if ((vd->vd_flags & VDF_MOUSECURSOR) && /* Mouse support enabled. */
1122 	    !(vw->vw_flags & VWF_MOUSE_HIDE) && /* Cursor displayed.      */
1123 	    !kdb_active && panicstr == NULL) {  /* DDB inactive.          */
1124 		vd->vd_mshown = 1;
1125 	} else {
1126 		vd->vd_mshown = 0;
1127 	}
1128 
1129 	/*
1130 	 * If the cursor changed display state or moved, we must mark
1131 	 * the old position as dirty, so that it's erased.
1132 	 */
1133 	if (cursor_was_shown != vd->vd_mshown ||
1134 	    (vd->vd_mshown && cursor_moved))
1135 		vt_mark_mouse_position_as_dirty(vd);
1136 
1137 	/*
1138          * Save position of the mouse cursor. It's used by backends to
1139          * know where to draw the cursor and during the next refresh to
1140          * erase the previous position.
1141 	 */
1142 	vd->vd_mx_drawn = vd->vd_mx;
1143 	vd->vd_my_drawn = vd->vd_my;
1144 
1145 	/*
1146 	 * If the cursor is displayed and has moved since last refresh,
1147 	 * mark the new position as dirty.
1148 	 */
1149 	if (vd->vd_mshown && cursor_moved)
1150 		vt_mark_mouse_position_as_dirty(vd);
1151 #endif
1152 
1153 	vtbuf_undirty(&vw->vw_buf, &tarea);
1154 	vt_termsize(vd, vf, &size);
1155 
1156 	/* Force a full redraw when the screen contents are invalid. */
1157 	if (vd->vd_flags & VDF_INVALID) {
1158 		tarea.tr_begin.tp_row = tarea.tr_begin.tp_col = 0;
1159 		tarea.tr_end = size;
1160 
1161 		vd->vd_flags &= ~VDF_INVALID;
1162 	}
1163 
1164 	if (tarea.tr_begin.tp_col < tarea.tr_end.tp_col) {
1165 		vd->vd_driver->vd_bitblt_text(vd, vw, &tarea);
1166 		return (1);
1167 	}
1168 
1169 	return (0);
1170 }
1171 
1172 static void
1173 vt_timer(void *arg)
1174 {
1175 	struct vt_device *vd;
1176 	int changed;
1177 
1178 	vd = arg;
1179 	/* Update screen if required. */
1180 	changed = vt_flush(vd);
1181 
1182 	/* Schedule for next update. */
1183 	if (changed)
1184 		vt_schedule_flush(vd, 0);
1185 	else
1186 		vd->vd_timer_armed = 0;
1187 }
1188 
1189 static void
1190 vtterm_done(struct terminal *tm)
1191 {
1192 	struct vt_window *vw = tm->tm_softc;
1193 	struct vt_device *vd = vw->vw_device;
1194 
1195 	if (kdb_active || panicstr != NULL) {
1196 		/* Switch to the debugger. */
1197 		if (vd->vd_curwindow != vw) {
1198 			vd->vd_curwindow = vw;
1199 			vd->vd_flags |= VDF_INVALID;
1200 			if (vd->vd_driver->vd_postswitch)
1201 				vd->vd_driver->vd_postswitch(vd);
1202 		}
1203 		vd->vd_flags &= ~VDF_SPLASH;
1204 		vt_flush(vd);
1205 	} else if (!(vd->vd_flags & VDF_ASYNC)) {
1206 		vt_flush(vd);
1207 	}
1208 }
1209 
1210 #ifdef DEV_SPLASH
1211 static void
1212 vtterm_splash(struct vt_device *vd)
1213 {
1214 	vt_axis_t top, left;
1215 
1216 	/* Display a nice boot splash. */
1217 	if (!(vd->vd_flags & VDF_TEXTMODE) && (boothowto & RB_MUTE)) {
1218 
1219 		top = (vd->vd_height - vt_logo_height) / 2;
1220 		left = (vd->vd_width - vt_logo_width) / 2;
1221 		switch (vt_logo_depth) {
1222 		case 1:
1223 			/* XXX: Unhardcode colors! */
1224 			vd->vd_driver->vd_bitblt_bmp(vd, vd->vd_curwindow,
1225 			    vt_logo_image, NULL, vt_logo_width, vt_logo_height,
1226 			    left, top, TC_WHITE, TC_BLACK);
1227 		}
1228 		vd->vd_flags |= VDF_SPLASH;
1229 	}
1230 }
1231 #endif
1232 
1233 
1234 static void
1235 vtterm_cnprobe(struct terminal *tm, struct consdev *cp)
1236 {
1237 	struct vt_driver *vtd, **vtdlist, *vtdbest = NULL;
1238 	struct vt_window *vw = tm->tm_softc;
1239 	struct vt_device *vd = vw->vw_device;
1240 	struct winsize wsz;
1241 	term_attr_t attr;
1242 	term_char_t c;
1243 
1244 	if (!vty_enabled(VTY_VT))
1245 		return;
1246 
1247 	if (vd->vd_flags & VDF_INITIALIZED)
1248 		/* Initialization already done. */
1249 		return;
1250 
1251 	SET_FOREACH(vtdlist, vt_drv_set) {
1252 		vtd = *vtdlist;
1253 		if (vtd->vd_probe == NULL)
1254 			continue;
1255 		if (vtd->vd_probe(vd) == CN_DEAD)
1256 			continue;
1257 		if ((vtdbest == NULL) ||
1258 		    (vtd->vd_priority > vtdbest->vd_priority))
1259 			vtdbest = vtd;
1260 	}
1261 	if (vtdbest == NULL) {
1262 		cp->cn_pri = CN_DEAD;
1263 		vd->vd_flags |= VDF_DEAD;
1264 	} else {
1265 		vd->vd_driver = vtdbest;
1266 		cp->cn_pri = vd->vd_driver->vd_init(vd);
1267 	}
1268 
1269 	/* Check if driver's vt_init return CN_DEAD. */
1270 	if (cp->cn_pri == CN_DEAD) {
1271 		vd->vd_flags |= VDF_DEAD;
1272 	}
1273 
1274 	/* Initialize any early-boot keyboard drivers */
1275 	kbd_configure(KB_CONF_PROBE_ONLY);
1276 
1277 	vd->vd_unit = atomic_fetchadd_int(&vt_unit, 1);
1278 	vd->vd_windows[VT_CONSWINDOW] = vw;
1279 	sprintf(cp->cn_name, "ttyv%r", VT_UNIT(vw));
1280 
1281 	/* Attach default font if not in TEXTMODE. */
1282 	if ((vd->vd_flags & VDF_TEXTMODE) == 0) {
1283 		vw->vw_font = vtfont_ref(&vt_font_default);
1284 		vt_compute_drawable_area(vw);
1285 	}
1286 
1287 	/*
1288 	 * The original screen size was faked (_VTDEFW x _VTDEFH). Now
1289 	 * that we have the real viewable size, fix it in the static
1290 	 * buffer.
1291 	 */
1292 	if (vd->vd_width != 0 && vd->vd_height != 0)
1293 		vt_termsize(vd, vw->vw_font, &vw->vw_buf.vb_scr_size);
1294 
1295 	vtbuf_init_early(&vw->vw_buf);
1296 	vt_winsize(vd, vw->vw_font, &wsz);
1297 	c = (boothowto & RB_MUTE) == 0 ? TERMINAL_KERN_ATTR :
1298 	    TERMINAL_NORM_ATTR;
1299 	attr.ta_format = TCHAR_FORMAT(c);
1300 	attr.ta_fgcolor = TCHAR_FGCOLOR(c);
1301 	attr.ta_bgcolor = TCHAR_BGCOLOR(c);
1302 	terminal_set_winsize_blank(tm, &wsz, 1, &attr);
1303 
1304 	if (vtdbest != NULL) {
1305 #ifdef DEV_SPLASH
1306 		vtterm_splash(vd);
1307 #endif
1308 		vd->vd_flags |= VDF_INITIALIZED;
1309 	}
1310 }
1311 
1312 static int
1313 vtterm_cngetc(struct terminal *tm)
1314 {
1315 	struct vt_window *vw = tm->tm_softc;
1316 	struct vt_device *vd = vw->vw_device;
1317 	keyboard_t *kbd;
1318 	u_int c;
1319 
1320 	if (vw->vw_kbdsq && *vw->vw_kbdsq)
1321 		return (*vw->vw_kbdsq++);
1322 
1323 	/* Make sure the splash screen is not there. */
1324 	if (vd->vd_flags & VDF_SPLASH) {
1325 		/* Remove splash */
1326 		vd->vd_flags &= ~VDF_SPLASH;
1327 		/* Mark screen as invalid to force update */
1328 		vd->vd_flags |= VDF_INVALID;
1329 		vt_flush(vd);
1330 	}
1331 
1332 	/* Stripped down keyboard handler. */
1333 	kbd = kbd_get_keyboard(vd->vd_keyboard);
1334 	if (kbd == NULL)
1335 		return (-1);
1336 
1337 	/* Force keyboard input mode to K_XLATE */
1338 	vw->vw_kbdmode = K_XLATE;
1339 	vt_update_kbd_mode(vw, kbd);
1340 
1341 	/* Switch the keyboard to polling to make it work here. */
1342 	kbdd_poll(kbd, TRUE);
1343 	c = kbdd_read_char(kbd, 0);
1344 	kbdd_poll(kbd, FALSE);
1345 	if (c & RELKEY)
1346 		return (-1);
1347 
1348 	if (vw->vw_flags & VWF_SCROLL) {
1349 		vt_scrollmode_kbdevent(vw, c, 1/* Console mode */);
1350 		vt_flush(vd);
1351 		return (-1);
1352 	}
1353 
1354 	/* Stripped down handling of vt_kbdevent(), without locking, etc. */
1355 	if (c & SPCLKEY) {
1356 		switch (c) {
1357 		case SPCLKEY | SLK:
1358 			vt_save_kbd_state(vw, kbd);
1359 			if (vw->vw_kbdstate & SLKED) {
1360 				/* Turn scrolling on. */
1361 				vw->vw_flags |= VWF_SCROLL;
1362 				VTBUF_SLCK_ENABLE(&vw->vw_buf);
1363 			} else {
1364 				/* Turn scrolling off. */
1365 				vt_scroll(vw, 0, VHS_END);
1366 				vw->vw_flags &= ~VWF_SCROLL;
1367 				VTBUF_SLCK_DISABLE(&vw->vw_buf);
1368 			}
1369 			break;
1370 		/* XXX: KDB can handle history. */
1371 		case SPCLKEY | FKEY | F(50): /* Arrow up. */
1372 			vw->vw_kbdsq = "\x1b[A";
1373 			break;
1374 		case SPCLKEY | FKEY | F(58): /* Arrow down. */
1375 			vw->vw_kbdsq = "\x1b[B";
1376 			break;
1377 		case SPCLKEY | FKEY | F(55): /* Arrow right. */
1378 			vw->vw_kbdsq = "\x1b[C";
1379 			break;
1380 		case SPCLKEY | FKEY | F(53): /* Arrow left. */
1381 			vw->vw_kbdsq = "\x1b[D";
1382 			break;
1383 		}
1384 
1385 		/* Force refresh to make scrollback work. */
1386 		vt_flush(vd);
1387 	} else if (KEYFLAGS(c) == 0) {
1388 		return (KEYCHAR(c));
1389 	}
1390 
1391 	if (vw->vw_kbdsq && *vw->vw_kbdsq)
1392 		return (*vw->vw_kbdsq++);
1393 
1394 	return (-1);
1395 }
1396 
1397 static void
1398 vtterm_cngrab(struct terminal *tm)
1399 {
1400 	struct vt_device *vd;
1401 	struct vt_window *vw;
1402 	keyboard_t *kbd;
1403 
1404 	vw = tm->tm_softc;
1405 	vd = vw->vw_device;
1406 
1407 	if (!cold)
1408 		vt_window_switch(vw);
1409 
1410 	kbd = kbd_get_keyboard(vd->vd_keyboard);
1411 	if (kbd == NULL)
1412 		return;
1413 
1414 	if (vw->vw_grabbed++ > 0)
1415 		return;
1416 
1417 	/*
1418 	 * Make sure the keyboard is accessible even when the kbd device
1419 	 * driver is disabled.
1420 	 */
1421 	kbdd_enable(kbd);
1422 
1423 	/* We shall always use the keyboard in the XLATE mode here. */
1424 	vw->vw_prev_kbdmode = vw->vw_kbdmode;
1425 	vw->vw_kbdmode = K_XLATE;
1426 	vt_update_kbd_mode(vw, kbd);
1427 
1428 	kbdd_poll(kbd, TRUE);
1429 }
1430 
1431 static void
1432 vtterm_cnungrab(struct terminal *tm)
1433 {
1434 	struct vt_device *vd;
1435 	struct vt_window *vw;
1436 	keyboard_t *kbd;
1437 
1438 	vw = tm->tm_softc;
1439 	vd = vw->vw_device;
1440 
1441 	kbd = kbd_get_keyboard(vd->vd_keyboard);
1442 	if (kbd == NULL)
1443 		return;
1444 
1445 	if (--vw->vw_grabbed > 0)
1446 		return;
1447 
1448 	kbdd_poll(kbd, FALSE);
1449 
1450 	vw->vw_kbdmode = vw->vw_prev_kbdmode;
1451 	vt_update_kbd_mode(vw, kbd);
1452 	kbdd_disable(kbd);
1453 }
1454 
1455 static void
1456 vtterm_opened(struct terminal *tm, int opened)
1457 {
1458 	struct vt_window *vw = tm->tm_softc;
1459 	struct vt_device *vd = vw->vw_device;
1460 
1461 	VT_LOCK(vd);
1462 	vd->vd_flags &= ~VDF_SPLASH;
1463 	if (opened)
1464 		vw->vw_flags |= VWF_OPENED;
1465 	else {
1466 		vw->vw_flags &= ~VWF_OPENED;
1467 		/* TODO: finish ACQ/REL */
1468 	}
1469 	VT_UNLOCK(vd);
1470 }
1471 
1472 static int
1473 vt_set_border(struct vt_window *vw, term_color_t c)
1474 {
1475 	struct vt_device *vd = vw->vw_device;
1476 
1477 	if (vd->vd_driver->vd_drawrect == NULL)
1478 		return (ENOTSUP);
1479 
1480 	/* Top bar. */
1481 	if (vw->vw_draw_area.tr_begin.tp_row > 0)
1482 		vd->vd_driver->vd_drawrect(vd,
1483 		    0, 0,
1484 		    vd->vd_width - 1, vw->vw_draw_area.tr_begin.tp_row - 1,
1485 		    1, c);
1486 
1487 	/* Left bar. */
1488 	if (vw->vw_draw_area.tr_begin.tp_col > 0)
1489 		vd->vd_driver->vd_drawrect(vd,
1490 		    0, 0,
1491 		    vw->vw_draw_area.tr_begin.tp_col - 1, vd->vd_height - 1,
1492 		    1, c);
1493 
1494 	/* Right bar. */
1495 	if (vw->vw_draw_area.tr_end.tp_col < vd->vd_width)
1496 		vd->vd_driver->vd_drawrect(vd,
1497 		    vw->vw_draw_area.tr_end.tp_col - 1, 0,
1498 		    vd->vd_width - 1, vd->vd_height - 1,
1499 		    1, c);
1500 
1501 	/* Bottom bar. */
1502 	if (vw->vw_draw_area.tr_end.tp_row < vd->vd_height)
1503 		vd->vd_driver->vd_drawrect(vd,
1504 		    0, vw->vw_draw_area.tr_end.tp_row - 1,
1505 		    vd->vd_width - 1, vd->vd_height - 1,
1506 		    1, c);
1507 
1508 	return (0);
1509 }
1510 
1511 static int
1512 vt_change_font(struct vt_window *vw, struct vt_font *vf)
1513 {
1514 	struct vt_device *vd = vw->vw_device;
1515 	struct terminal *tm = vw->vw_terminal;
1516 	term_pos_t size;
1517 	struct winsize wsz;
1518 
1519 	/*
1520 	 * Changing fonts.
1521 	 *
1522 	 * Changing fonts is a little tricky.  We must prevent
1523 	 * simultaneous access to the device, so we must stop
1524 	 * the display timer and the terminal from accessing.
1525 	 * We need to switch fonts and grow our screen buffer.
1526 	 *
1527 	 * XXX: Right now the code uses terminal_mute() to
1528 	 * prevent data from reaching the console driver while
1529 	 * resizing the screen buffer.  This isn't elegant...
1530 	 */
1531 
1532 	VT_LOCK(vd);
1533 	if (vw->vw_flags & VWF_BUSY) {
1534 		/* Another process is changing the font. */
1535 		VT_UNLOCK(vd);
1536 		return (EBUSY);
1537 	}
1538 	vw->vw_flags |= VWF_BUSY;
1539 	VT_UNLOCK(vd);
1540 
1541 	vt_termsize(vd, vf, &size);
1542 	vt_winsize(vd, vf, &wsz);
1543 
1544 	/* Grow the screen buffer and terminal. */
1545 	terminal_mute(tm, 1);
1546 	vtbuf_grow(&vw->vw_buf, &size, vw->vw_buf.vb_history_size);
1547 	terminal_set_winsize_blank(tm, &wsz, 0, NULL);
1548 	terminal_set_cursor(tm, &vw->vw_buf.vb_cursor);
1549 	terminal_mute(tm, 0);
1550 
1551 	/* Actually apply the font to the current window. */
1552 	VT_LOCK(vd);
1553 	if (vw->vw_font != vf && vw->vw_font != NULL && vf != NULL) {
1554 		/*
1555 		 * In case vt_change_font called to update size we don't need
1556 		 * to update font link.
1557 		 */
1558 		vtfont_unref(vw->vw_font);
1559 		vw->vw_font = vtfont_ref(vf);
1560 	}
1561 
1562 	/*
1563 	 * Compute the drawable area and move the mouse cursor inside
1564 	 * it, in case the new area is smaller than the previous one.
1565 	 */
1566 	vt_compute_drawable_area(vw);
1567 	vd->vd_mx = min(vd->vd_mx,
1568 	    vw->vw_draw_area.tr_end.tp_col -
1569 	    vw->vw_draw_area.tr_begin.tp_col - 1);
1570 	vd->vd_my = min(vd->vd_my,
1571 	    vw->vw_draw_area.tr_end.tp_row -
1572 	    vw->vw_draw_area.tr_begin.tp_row - 1);
1573 
1574 	/* Force a full redraw the next timer tick. */
1575 	if (vd->vd_curwindow == vw) {
1576 		vt_set_border(vw, TC_BLACK);
1577 		vd->vd_flags |= VDF_INVALID;
1578 		vt_resume_flush_timer(vw->vw_device, 0);
1579 	}
1580 	vw->vw_flags &= ~VWF_BUSY;
1581 	VT_UNLOCK(vd);
1582 	return (0);
1583 }
1584 
1585 static int
1586 vt_proc_alive(struct vt_window *vw)
1587 {
1588 	struct proc *p;
1589 
1590 	if (vw->vw_smode.mode != VT_PROCESS)
1591 		return (FALSE);
1592 
1593 	if (vw->vw_proc) {
1594 		if ((p = pfind(vw->vw_pid)) != NULL)
1595 			PROC_UNLOCK(p);
1596 		if (vw->vw_proc == p)
1597 			return (TRUE);
1598 		vw->vw_proc = NULL;
1599 		vw->vw_smode.mode = VT_AUTO;
1600 		DPRINTF(1, "vt controlling process %d died\n", vw->vw_pid);
1601 		vw->vw_pid = 0;
1602 	}
1603 	return (FALSE);
1604 }
1605 
1606 static int
1607 signal_vt_rel(struct vt_window *vw)
1608 {
1609 
1610 	if (vw->vw_smode.mode != VT_PROCESS)
1611 		return (FALSE);
1612 	if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) {
1613 		vw->vw_proc = NULL;
1614 		vw->vw_pid = 0;
1615 		return (TRUE);
1616 	}
1617 	vw->vw_flags |= VWF_SWWAIT_REL;
1618 	PROC_LOCK(vw->vw_proc);
1619 	kern_psignal(vw->vw_proc, vw->vw_smode.relsig);
1620 	PROC_UNLOCK(vw->vw_proc);
1621 	DPRINTF(1, "sending relsig to %d\n", vw->vw_pid);
1622 	return (TRUE);
1623 }
1624 
1625 static int
1626 signal_vt_acq(struct vt_window *vw)
1627 {
1628 
1629 	if (vw->vw_smode.mode != VT_PROCESS)
1630 		return (FALSE);
1631 	if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
1632 		cnavailable(vw->vw_terminal->consdev, FALSE);
1633 	if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) {
1634 		vw->vw_proc = NULL;
1635 		vw->vw_pid = 0;
1636 		return (TRUE);
1637 	}
1638 	vw->vw_flags |= VWF_SWWAIT_ACQ;
1639 	PROC_LOCK(vw->vw_proc);
1640 	kern_psignal(vw->vw_proc, vw->vw_smode.acqsig);
1641 	PROC_UNLOCK(vw->vw_proc);
1642 	DPRINTF(1, "sending acqsig to %d\n", vw->vw_pid);
1643 	return (TRUE);
1644 }
1645 
1646 static int
1647 finish_vt_rel(struct vt_window *vw, int release, int *s)
1648 {
1649 
1650 	if (vw->vw_flags & VWF_SWWAIT_REL) {
1651 		vw->vw_flags &= ~VWF_SWWAIT_REL;
1652 		if (release) {
1653 			callout_drain(&vw->vw_proc_dead_timer);
1654 			vt_late_window_switch(vw->vw_switch_to);
1655 		}
1656 		return (0);
1657 	}
1658 	return (EINVAL);
1659 }
1660 
1661 static int
1662 finish_vt_acq(struct vt_window *vw)
1663 {
1664 
1665 	if (vw->vw_flags & VWF_SWWAIT_ACQ) {
1666 		vw->vw_flags &= ~VWF_SWWAIT_ACQ;
1667 		return (0);
1668 	}
1669 	return (EINVAL);
1670 }
1671 
1672 #ifndef SC_NO_CUTPASTE
1673 static void
1674 vt_mouse_terminput_button(struct vt_device *vd, int button)
1675 {
1676 	struct vt_window *vw;
1677 	struct vt_font *vf;
1678 	char mouseb[6] = "\x1B[M";
1679 	int i, x, y;
1680 
1681 	vw = vd->vd_curwindow;
1682 	vf = vw->vw_font;
1683 
1684 	/* Translate to char position. */
1685 	x = vd->vd_mx / vf->vf_width;
1686 	y = vd->vd_my / vf->vf_height;
1687 	/* Avoid overflow. */
1688 	x = MIN(x, 255 - '!');
1689 	y = MIN(y, 255 - '!');
1690 
1691 	mouseb[3] = ' ' + button;
1692 	mouseb[4] = '!' + x;
1693 	mouseb[5] = '!' + y;
1694 
1695 	for (i = 0; i < sizeof(mouseb); i++)
1696 		terminal_input_char(vw->vw_terminal, mouseb[i]);
1697 }
1698 
1699 static void
1700 vt_mouse_terminput(struct vt_device *vd, int type, int x, int y, int event,
1701     int cnt)
1702 {
1703 
1704 	switch (type) {
1705 	case MOUSE_BUTTON_EVENT:
1706 		if (cnt > 0) {
1707 			/* Mouse button pressed. */
1708 			if (event & MOUSE_BUTTON1DOWN)
1709 				vt_mouse_terminput_button(vd, 0);
1710 			if (event & MOUSE_BUTTON2DOWN)
1711 				vt_mouse_terminput_button(vd, 1);
1712 			if (event & MOUSE_BUTTON3DOWN)
1713 				vt_mouse_terminput_button(vd, 2);
1714 		} else {
1715 			/* Mouse button released. */
1716 			vt_mouse_terminput_button(vd, 3);
1717 		}
1718 		break;
1719 #ifdef notyet
1720 	case MOUSE_MOTION_EVENT:
1721 		if (mouse->u.data.z < 0) {
1722 			/* Scroll up. */
1723 			sc_mouse_input_button(vd, 64);
1724 		} else if (mouse->u.data.z > 0) {
1725 			/* Scroll down. */
1726 			sc_mouse_input_button(vd, 65);
1727 		}
1728 		break;
1729 #endif
1730 	}
1731 }
1732 
1733 static void
1734 vt_mouse_paste()
1735 {
1736 	term_char_t *buf;
1737 	int i, len;
1738 
1739 	len = VD_PASTEBUFLEN(main_vd);
1740 	buf = VD_PASTEBUF(main_vd);
1741 	len /= sizeof(term_char_t);
1742 	for (i = 0; i < len; i++) {
1743 		if (buf[i] == '\0')
1744 			continue;
1745 		terminal_input_char(main_vd->vd_curwindow->vw_terminal,
1746 		    buf[i]);
1747 	}
1748 }
1749 
1750 void
1751 vt_mouse_event(int type, int x, int y, int event, int cnt, int mlevel)
1752 {
1753 	struct vt_device *vd;
1754 	struct vt_window *vw;
1755 	struct vt_font *vf;
1756 	term_pos_t size;
1757 	int len, mark;
1758 
1759 	vd = main_vd;
1760 	vw = vd->vd_curwindow;
1761 	vf = vw->vw_font;
1762 	mark = 0;
1763 
1764 	if (vw->vw_flags & (VWF_MOUSE_HIDE | VWF_GRAPHICS))
1765 		/*
1766 		 * Either the mouse is disabled, or the window is in
1767 		 * "graphics mode". The graphics mode is usually set by
1768 		 * an X server, using the KDSETMODE ioctl.
1769 		 */
1770 		return;
1771 
1772 	if (vf == NULL)	/* Text mode. */
1773 		return;
1774 
1775 	/*
1776 	 * TODO: add flag about pointer position changed, to not redraw chars
1777 	 * under mouse pointer when nothing changed.
1778 	 */
1779 
1780 	if (vw->vw_mouse_level > 0)
1781 		vt_mouse_terminput(vd, type, x, y, event, cnt);
1782 
1783 	switch (type) {
1784 	case MOUSE_ACTION:
1785 	case MOUSE_MOTION_EVENT:
1786 		/* Movement */
1787 		x += vd->vd_mx;
1788 		y += vd->vd_my;
1789 
1790 		vt_termsize(vd, vf, &size);
1791 
1792 		/* Apply limits. */
1793 		x = MAX(x, 0);
1794 		y = MAX(y, 0);
1795 		x = MIN(x, (size.tp_col * vf->vf_width) - 1);
1796 		y = MIN(y, (size.tp_row * vf->vf_height) - 1);
1797 
1798 		vd->vd_mx = x;
1799 		vd->vd_my = y;
1800 		if (vd->vd_mstate & MOUSE_BUTTON1DOWN)
1801 			vtbuf_set_mark(&vw->vw_buf, VTB_MARK_MOVE,
1802 			    vd->vd_mx / vf->vf_width,
1803 			    vd->vd_my / vf->vf_height);
1804 
1805 		vt_resume_flush_timer(vw->vw_device, 0);
1806 		return; /* Done */
1807 	case MOUSE_BUTTON_EVENT:
1808 		/* Buttons */
1809 		break;
1810 	default:
1811 		return; /* Done */
1812 	}
1813 
1814 	switch (event) {
1815 	case MOUSE_BUTTON1DOWN:
1816 		switch (cnt % 4) {
1817 		case 0:	/* up */
1818 			mark = VTB_MARK_END;
1819 			break;
1820 		case 1: /* single click: start cut operation */
1821 			mark = VTB_MARK_START;
1822 			break;
1823 		case 2:	/* double click: cut a word */
1824 			mark = VTB_MARK_WORD;
1825 			break;
1826 		case 3:	/* triple click: cut a line */
1827 			mark = VTB_MARK_ROW;
1828 			break;
1829 		}
1830 		break;
1831 	case VT_MOUSE_PASTEBUTTON:
1832 		switch (cnt) {
1833 		case 0:	/* up */
1834 			break;
1835 		default:
1836 			vt_mouse_paste();
1837 			break;
1838 		}
1839 		return; /* Done */
1840 	case VT_MOUSE_EXTENDBUTTON:
1841 		switch (cnt) {
1842 		case 0:	/* up */
1843 			if (!(vd->vd_mstate & MOUSE_BUTTON1DOWN))
1844 				mark = VTB_MARK_EXTEND;
1845 			else
1846 				mark = 0;
1847 			break;
1848 		default:
1849 			mark = VTB_MARK_EXTEND;
1850 			break;
1851 		}
1852 		break;
1853 	default:
1854 		return; /* Done */
1855 	}
1856 
1857 	/* Save buttons state. */
1858 	if (cnt > 0)
1859 		vd->vd_mstate |= event;
1860 	else
1861 		vd->vd_mstate &= ~event;
1862 
1863 	if (vtbuf_set_mark(&vw->vw_buf, mark, vd->vd_mx / vf->vf_width,
1864 	    vd->vd_my / vf->vf_height) == 1) {
1865 		/*
1866 		 * We have something marked to copy, so update pointer to
1867 		 * window with selection.
1868 		 */
1869 		vt_resume_flush_timer(vw->vw_device, 0);
1870 
1871 		switch (mark) {
1872 		case VTB_MARK_END:
1873 		case VTB_MARK_WORD:
1874 		case VTB_MARK_ROW:
1875 		case VTB_MARK_EXTEND:
1876 			break;
1877 		default:
1878 			/* Other types of mark do not require to copy data. */
1879 			return;
1880 		}
1881 
1882 		/* Get current selection size in bytes. */
1883 		len = vtbuf_get_marked_len(&vw->vw_buf);
1884 		if (len <= 0)
1885 			return;
1886 
1887 		/* Reallocate buffer only if old one is too small. */
1888 		if (len > VD_PASTEBUFSZ(vd)) {
1889 			VD_PASTEBUF(vd) = realloc(VD_PASTEBUF(vd), len, M_VT,
1890 			    M_WAITOK | M_ZERO);
1891 			/* Update buffer size. */
1892 			VD_PASTEBUFSZ(vd) = len;
1893 		}
1894 		/* Request copy/paste buffer data, no more than `len' */
1895 		vtbuf_extract_marked(&vw->vw_buf, VD_PASTEBUF(vd),
1896 		    VD_PASTEBUFSZ(vd));
1897 
1898 		VD_PASTEBUFLEN(vd) = len;
1899 
1900 		/* XXX VD_PASTEBUF(vd) have to be freed on shutdown/unload. */
1901 	}
1902 }
1903 
1904 void
1905 vt_mouse_state(int show)
1906 {
1907 	struct vt_device *vd;
1908 	struct vt_window *vw;
1909 
1910 	vd = main_vd;
1911 	vw = vd->vd_curwindow;
1912 
1913 	switch (show) {
1914 	case VT_MOUSE_HIDE:
1915 		vw->vw_flags |= VWF_MOUSE_HIDE;
1916 		break;
1917 	case VT_MOUSE_SHOW:
1918 		vw->vw_flags &= ~VWF_MOUSE_HIDE;
1919 		break;
1920 	}
1921 
1922 	/* Mark mouse position as dirty. */
1923 	vt_mark_mouse_position_as_dirty(vd);
1924 	vt_resume_flush_timer(vw->vw_device, 0);
1925 }
1926 #endif
1927 
1928 static int
1929 vtterm_mmap(struct terminal *tm, vm_ooffset_t offset, vm_paddr_t * paddr,
1930     int nprot, vm_memattr_t *memattr)
1931 {
1932 	struct vt_window *vw = tm->tm_softc;
1933 	struct vt_device *vd = vw->vw_device;
1934 
1935 	if (vd->vd_driver->vd_fb_mmap)
1936 		return (vd->vd_driver->vd_fb_mmap(vd, offset, paddr, nprot,
1937 		    memattr));
1938 
1939 	return (ENXIO);
1940 }
1941 
1942 static int
1943 vtterm_ioctl(struct terminal *tm, u_long cmd, caddr_t data,
1944     struct thread *td)
1945 {
1946 	struct vt_window *vw = tm->tm_softc;
1947 	struct vt_device *vd = vw->vw_device;
1948 	keyboard_t *kbd;
1949 	int error, i, s;
1950 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1951     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1952 	int ival;
1953 
1954 	switch (cmd) {
1955 	case _IO('v', 4):
1956 		cmd = VT_RELDISP;
1957 		break;
1958 	case _IO('v', 5):
1959 		cmd = VT_ACTIVATE;
1960 		break;
1961 	case _IO('v', 6):
1962 		cmd = VT_WAITACTIVE;
1963 		break;
1964 	case _IO('K', 20):
1965 		cmd = KDSKBSTATE;
1966 		break;
1967 	case _IO('K', 67):
1968 		cmd = KDSETRAD;
1969 		break;
1970 	case _IO('K', 7):
1971 		cmd = KDSKBMODE;
1972 		break;
1973 	case _IO('K', 8):
1974 		cmd = KDMKTONE;
1975 		break;
1976 	case _IO('K', 63):
1977 		cmd = KIOCSOUND;
1978 		break;
1979 	case _IO('K', 66):
1980 		cmd = KDSETLED;
1981 		break;
1982 	case _IO('c', 110):
1983 		cmd = CONS_SETKBD;
1984 		break;
1985 	default:
1986 		goto skip_thunk;
1987 	}
1988 	ival = IOCPARM_IVAL(data);
1989 	data = (caddr_t)&ival;
1990 skip_thunk:
1991 #endif
1992 
1993 	switch (cmd) {
1994 	case KDSETRAD:		/* set keyboard repeat & delay rates (old) */
1995 		if (*(int *)data & ~0x7f)
1996 			return (EINVAL);
1997 		/* FALLTHROUGH */
1998 	case GIO_KEYMAP:
1999 	case PIO_KEYMAP:
2000 	case GIO_DEADKEYMAP:
2001 	case PIO_DEADKEYMAP:
2002 	case GETFKEY:
2003 	case SETFKEY:
2004 	case KDGKBINFO:
2005 	case KDGKBTYPE:
2006 	case KDGETREPEAT:	/* get keyboard repeat & delay rates */
2007 	case KDSETREPEAT:	/* set keyboard repeat & delay rates (new) */
2008 	case KBADDKBD:		/* add/remove keyboard to/from mux */
2009 	case KBRELKBD: {
2010 		error = 0;
2011 
2012 		mtx_lock(&Giant);
2013 		kbd = kbd_get_keyboard(vd->vd_keyboard);
2014 		if (kbd != NULL)
2015 			error = kbdd_ioctl(kbd, cmd, data);
2016 		mtx_unlock(&Giant);
2017 		if (error == ENOIOCTL) {
2018 			if (cmd == KDGKBTYPE) {
2019 				/* always return something? XXX */
2020 				*(int *)data = 0;
2021 			} else {
2022 				return (ENODEV);
2023 			}
2024 		}
2025 		return (error);
2026 	}
2027 	case KDGKBSTATE: {	/* get keyboard state (locks) */
2028 		error = 0;
2029 
2030 		if (vw == vd->vd_curwindow) {
2031 			mtx_lock(&Giant);
2032 			kbd = kbd_get_keyboard(vd->vd_keyboard);
2033 			if (kbd != NULL)
2034 				error = vt_save_kbd_state(vw, kbd);
2035 			mtx_unlock(&Giant);
2036 
2037 			if (error != 0)
2038 				return (error);
2039 		}
2040 
2041 		*(int *)data = vw->vw_kbdstate & LOCK_MASK;
2042 
2043 		return (error);
2044 	}
2045 	case KDSKBSTATE: {	/* set keyboard state (locks) */
2046 		int state;
2047 
2048 		state = *(int *)data;
2049 		if (state & ~LOCK_MASK)
2050 			return (EINVAL);
2051 
2052 		vw->vw_kbdstate &= ~LOCK_MASK;
2053 		vw->vw_kbdstate |= state;
2054 
2055 		error = 0;
2056 		if (vw == vd->vd_curwindow) {
2057 			mtx_lock(&Giant);
2058 			kbd = kbd_get_keyboard(vd->vd_keyboard);
2059 			if (kbd != NULL)
2060 				error = vt_update_kbd_state(vw, kbd);
2061 			mtx_unlock(&Giant);
2062 		}
2063 
2064 		return (error);
2065 	}
2066 	case KDGETLED: {	/* get keyboard LED status */
2067 		error = 0;
2068 
2069 		if (vw == vd->vd_curwindow) {
2070 			mtx_lock(&Giant);
2071 			kbd = kbd_get_keyboard(vd->vd_keyboard);
2072 			if (kbd != NULL)
2073 				error = vt_save_kbd_leds(vw, kbd);
2074 			mtx_unlock(&Giant);
2075 
2076 			if (error != 0)
2077 				return (error);
2078 		}
2079 
2080 		*(int *)data = vw->vw_kbdstate & LED_MASK;
2081 
2082 		return (error);
2083 	}
2084 	case KDSETLED: {	/* set keyboard LED status */
2085 		int leds;
2086 
2087 		leds = *(int *)data;
2088 		if (leds & ~LED_MASK)
2089 			return (EINVAL);
2090 
2091 		vw->vw_kbdstate &= ~LED_MASK;
2092 		vw->vw_kbdstate |= leds;
2093 
2094 		error = 0;
2095 		if (vw == vd->vd_curwindow) {
2096 			mtx_lock(&Giant);
2097 			kbd = kbd_get_keyboard(vd->vd_keyboard);
2098 			if (kbd != NULL)
2099 				error = vt_update_kbd_leds(vw, kbd);
2100 			mtx_unlock(&Giant);
2101 		}
2102 
2103 		return (error);
2104 	}
2105 	case KDGKBMODE: {
2106 		error = 0;
2107 
2108 		if (vw == vd->vd_curwindow) {
2109 			mtx_lock(&Giant);
2110 			kbd = kbd_get_keyboard(vd->vd_keyboard);
2111 			if (kbd != NULL)
2112 				error = vt_save_kbd_mode(vw, kbd);
2113 			mtx_unlock(&Giant);
2114 
2115 			if (error != 0)
2116 				return (error);
2117 		}
2118 
2119 		*(int *)data = vw->vw_kbdmode;
2120 
2121 		return (error);
2122 	}
2123 	case KDSKBMODE: {
2124 		int mode;
2125 
2126 		mode = *(int *)data;
2127 		switch (mode) {
2128 		case K_XLATE:
2129 		case K_RAW:
2130 		case K_CODE:
2131 			vw->vw_kbdmode = mode;
2132 
2133 			error = 0;
2134 			if (vw == vd->vd_curwindow) {
2135 				mtx_lock(&Giant);
2136 				kbd = kbd_get_keyboard(vd->vd_keyboard);
2137 				if (kbd != NULL)
2138 					error = vt_update_kbd_mode(vw, kbd);
2139 				mtx_unlock(&Giant);
2140 			}
2141 
2142 			return (error);
2143 		default:
2144 			return (EINVAL);
2145 		}
2146 	}
2147 	case FBIOGTYPE:
2148 	case FBIO_GETWINORG:	/* get frame buffer window origin */
2149 	case FBIO_GETDISPSTART:	/* get display start address */
2150 	case FBIO_GETLINEWIDTH:	/* get scan line width in bytes */
2151 	case FBIO_BLANK:	/* blank display */
2152 		if (vd->vd_driver->vd_fb_ioctl)
2153 			return (vd->vd_driver->vd_fb_ioctl(vd, cmd, data, td));
2154 		break;
2155 	case CONS_BLANKTIME:
2156 		/* XXX */
2157 		return (0);
2158 	case CONS_GET:
2159 		/* XXX */
2160 		*(int *)data = M_CG640x480;
2161 		return (0);
2162 	case CONS_BELLTYPE: 	/* set bell type sound */
2163 		if ((*(int *)data) & CONS_QUIET_BELL)
2164 			vd->vd_flags |= VDF_QUIET_BELL;
2165 		else
2166 			vd->vd_flags &= ~VDF_QUIET_BELL;
2167 		return (0);
2168 	case CONS_GETINFO: {
2169 		vid_info_t *vi = (vid_info_t *)data;
2170 		if (vi->size != sizeof(struct vid_info))
2171 			return (EINVAL);
2172 
2173 		if (vw == vd->vd_curwindow) {
2174 			kbd = kbd_get_keyboard(vd->vd_keyboard);
2175 			if (kbd != NULL)
2176 				vt_save_kbd_state(vw, kbd);
2177 		}
2178 
2179 		vi->m_num = vd->vd_curwindow->vw_number + 1;
2180 		vi->mk_keylock = vw->vw_kbdstate & LOCK_MASK;
2181 		/* XXX: other fields! */
2182 		return (0);
2183 	}
2184 	case CONS_GETVERS:
2185 		*(int *)data = 0x200;
2186 		return (0);
2187 	case CONS_MODEINFO:
2188 		/* XXX */
2189 		return (0);
2190 	case CONS_MOUSECTL: {
2191 		mouse_info_t *mouse = (mouse_info_t*)data;
2192 
2193 		/*
2194 		 * All the commands except MOUSE_SHOW nd MOUSE_HIDE
2195 		 * should not be applied to individual TTYs, but only to
2196 		 * consolectl.
2197 		 */
2198 		switch (mouse->operation) {
2199 		case MOUSE_HIDE:
2200 			if (vd->vd_flags & VDF_MOUSECURSOR) {
2201 				vd->vd_flags &= ~VDF_MOUSECURSOR;
2202 #ifndef SC_NO_CUTPASTE
2203 				vt_mouse_state(VT_MOUSE_HIDE);
2204 #endif
2205 			}
2206 			return (0);
2207 		case MOUSE_SHOW:
2208 			if (!(vd->vd_flags & VDF_MOUSECURSOR)) {
2209 				vd->vd_flags |= VDF_MOUSECURSOR;
2210 				vd->vd_mx = vd->vd_width / 2;
2211 				vd->vd_my = vd->vd_height / 2;
2212 #ifndef SC_NO_CUTPASTE
2213 				vt_mouse_state(VT_MOUSE_SHOW);
2214 #endif
2215 			}
2216 			return (0);
2217 		default:
2218 			return (EINVAL);
2219 		}
2220 	}
2221 	case PIO_VFONT: {
2222 		struct vt_font *vf;
2223 
2224 		if (vd->vd_flags & VDF_TEXTMODE)
2225 			return (ENOTSUP);
2226 
2227 		error = vtfont_load((void *)data, &vf);
2228 		if (error != 0)
2229 			return (error);
2230 
2231 		error = vt_change_font(vw, vf);
2232 		vtfont_unref(vf);
2233 		return (error);
2234 	}
2235 	case PIO_VFONT_DEFAULT: {
2236 		/* Reset to default font. */
2237 		error = vt_change_font(vw, &vt_font_default);
2238 		return (error);
2239 	}
2240 	case GIO_SCRNMAP: {
2241 		scrmap_t *sm = (scrmap_t *)data;
2242 
2243 		/* We don't have screen maps, so return a handcrafted one. */
2244 		for (i = 0; i < 256; i++)
2245 			sm->scrmap[i] = i;
2246 		return (0);
2247 	}
2248 	case KDSETMODE:
2249 		/*
2250 		 * FIXME: This implementation is incomplete compared to
2251 		 * syscons.
2252 		 */
2253 		switch (*(int *)data) {
2254 		case KD_TEXT:
2255 		case KD_TEXT1:
2256 		case KD_PIXEL:
2257 			vw->vw_flags &= ~VWF_GRAPHICS;
2258 			break;
2259 		case KD_GRAPHICS:
2260 			vw->vw_flags |= VWF_GRAPHICS;
2261 			break;
2262 		}
2263 		return (0);
2264 	case KDENABIO:      	/* allow io operations */
2265 		error = priv_check(td, PRIV_IO);
2266 		if (error != 0)
2267 			return (error);
2268 		error = securelevel_gt(td->td_ucred, 0);
2269 		if (error != 0)
2270 			return (error);
2271 #if defined(__i386__)
2272 		td->td_frame->tf_eflags |= PSL_IOPL;
2273 #elif defined(__amd64__)
2274 		td->td_frame->tf_rflags |= PSL_IOPL;
2275 #endif
2276 		return (0);
2277 	case KDDISABIO:     	/* disallow io operations (default) */
2278 #if defined(__i386__)
2279 		td->td_frame->tf_eflags &= ~PSL_IOPL;
2280 #elif defined(__amd64__)
2281 		td->td_frame->tf_rflags &= ~PSL_IOPL;
2282 #endif
2283 		return (0);
2284 	case KDMKTONE:      	/* sound the bell */
2285 		vtterm_beep(tm, *(u_int *)data);
2286 		return (0);
2287 	case KIOCSOUND:     	/* make tone (*data) hz */
2288 		/* TODO */
2289 		return (0);
2290 	case CONS_SETKBD: 		/* set the new keyboard */
2291 		mtx_lock(&Giant);
2292 		error = 0;
2293 		if (vd->vd_keyboard != *(int *)data) {
2294 			kbd = kbd_get_keyboard(*(int *)data);
2295 			if (kbd == NULL) {
2296 				mtx_unlock(&Giant);
2297 				return (EINVAL);
2298 			}
2299 			i = kbd_allocate(kbd->kb_name, kbd->kb_unit,
2300 			    (void *)vd, vt_kbdevent, vd);
2301 			if (i >= 0) {
2302 				if (vd->vd_keyboard != -1) {
2303 					vt_save_kbd_state(vd->vd_curwindow, kbd);
2304 					kbd_release(kbd, (void *)vd);
2305 				}
2306 				kbd = kbd_get_keyboard(i);
2307 				vd->vd_keyboard = i;
2308 
2309 				vt_update_kbd_mode(vd->vd_curwindow, kbd);
2310 				vt_update_kbd_state(vd->vd_curwindow, kbd);
2311 			} else {
2312 				error = EPERM;	/* XXX */
2313 			}
2314 		}
2315 		mtx_unlock(&Giant);
2316 		return (error);
2317 	case CONS_RELKBD: 		/* release the current keyboard */
2318 		mtx_lock(&Giant);
2319 		error = 0;
2320 		if (vd->vd_keyboard != -1) {
2321 			kbd = kbd_get_keyboard(vd->vd_keyboard);
2322 			if (kbd == NULL) {
2323 				mtx_unlock(&Giant);
2324 				return (EINVAL);
2325 			}
2326 			vt_save_kbd_state(vd->vd_curwindow, kbd);
2327 			error = kbd_release(kbd, (void *)vd);
2328 			if (error == 0) {
2329 				vd->vd_keyboard = -1;
2330 			}
2331 		}
2332 		mtx_unlock(&Giant);
2333 		return (error);
2334 	case VT_ACTIVATE: {
2335 		int win;
2336 		win = *(int *)data - 1;
2337 		DPRINTF(5, "%s%d: VT_ACTIVATE ttyv%d ", SC_DRIVER_NAME,
2338 		    VT_UNIT(vw), win);
2339 		if ((win >= VT_MAXWINDOWS) || (win < 0))
2340 			return (EINVAL);
2341 		return (vt_proc_window_switch(vd->vd_windows[win]));
2342 	}
2343 	case VT_GETACTIVE:
2344 		*(int *)data = vd->vd_curwindow->vw_number + 1;
2345 		return (0);
2346 	case VT_GETINDEX:
2347 		*(int *)data = vw->vw_number + 1;
2348 		return (0);
2349 	case VT_LOCKSWITCH:
2350 		/* TODO: Check current state, switching can be in progress. */
2351 		if ((*(int *)data) == 0x01)
2352 			vw->vw_flags |= VWF_VTYLOCK;
2353 		else if ((*(int *)data) == 0x02)
2354 			vw->vw_flags &= ~VWF_VTYLOCK;
2355 		else
2356 			return (EINVAL);
2357 		return (0);
2358 	case VT_OPENQRY:
2359 		VT_LOCK(vd);
2360 		for (i = 0; i < VT_MAXWINDOWS; i++) {
2361 			vw = vd->vd_windows[i];
2362 			if (vw == NULL)
2363 				continue;
2364 			if (!(vw->vw_flags & VWF_OPENED)) {
2365 				*(int *)data = vw->vw_number + 1;
2366 				VT_UNLOCK(vd);
2367 				return (0);
2368 			}
2369 		}
2370 		VT_UNLOCK(vd);
2371 		return (EINVAL);
2372 	case VT_WAITACTIVE: {
2373 		unsigned int idx;
2374 
2375 		error = 0;
2376 
2377 		idx = *(unsigned int *)data;
2378 		if (idx > VT_MAXWINDOWS)
2379 			return (EINVAL);
2380 		if (idx > 0)
2381 			vw = vd->vd_windows[idx - 1];
2382 
2383 		VT_LOCK(vd);
2384 		while (vd->vd_curwindow != vw && error == 0)
2385 			error = cv_wait_sig(&vd->vd_winswitch, &vd->vd_lock);
2386 		VT_UNLOCK(vd);
2387 		return (error);
2388 	}
2389 	case VT_SETMODE: {    	/* set screen switcher mode */
2390 		struct vt_mode *mode;
2391 		struct proc *p1;
2392 
2393 		mode = (struct vt_mode *)data;
2394 		DPRINTF(5, "%s%d: VT_SETMODE ", SC_DRIVER_NAME, VT_UNIT(vw));
2395 		if (vw->vw_smode.mode == VT_PROCESS) {
2396 			p1 = pfind(vw->vw_pid);
2397 			if (vw->vw_proc == p1 && vw->vw_proc != td->td_proc) {
2398 				if (p1)
2399 					PROC_UNLOCK(p1);
2400 				DPRINTF(5, "error EPERM\n");
2401 				return (EPERM);
2402 			}
2403 			if (p1)
2404 				PROC_UNLOCK(p1);
2405 		}
2406 		if (mode->mode == VT_AUTO) {
2407 			vw->vw_smode.mode = VT_AUTO;
2408 			vw->vw_proc = NULL;
2409 			vw->vw_pid = 0;
2410 			DPRINTF(5, "VT_AUTO, ");
2411 			if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
2412 				cnavailable(vw->vw_terminal->consdev, TRUE);
2413 			/* were we in the middle of the vty switching process? */
2414 			if (finish_vt_rel(vw, TRUE, &s) == 0)
2415 				DPRINTF(5, "reset WAIT_REL, ");
2416 			if (finish_vt_acq(vw) == 0)
2417 				DPRINTF(5, "reset WAIT_ACQ, ");
2418 			return (0);
2419 		} else if (mode->mode == VT_PROCESS) {
2420 			if (!ISSIGVALID(mode->relsig) ||
2421 			    !ISSIGVALID(mode->acqsig) ||
2422 			    !ISSIGVALID(mode->frsig)) {
2423 				DPRINTF(5, "error EINVAL\n");
2424 				return (EINVAL);
2425 			}
2426 			DPRINTF(5, "VT_PROCESS %d, ", td->td_proc->p_pid);
2427 			bcopy(data, &vw->vw_smode, sizeof(struct vt_mode));
2428 			vw->vw_proc = td->td_proc;
2429 			vw->vw_pid = vw->vw_proc->p_pid;
2430 			if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
2431 				cnavailable(vw->vw_terminal->consdev, FALSE);
2432 		} else {
2433 			DPRINTF(5, "VT_SETMODE failed, unknown mode %d\n",
2434 			    mode->mode);
2435 			return (EINVAL);
2436 		}
2437 		DPRINTF(5, "\n");
2438 		return (0);
2439 	}
2440 	case VT_GETMODE:	/* get screen switcher mode */
2441 		bcopy(&vw->vw_smode, data, sizeof(struct vt_mode));
2442 		return (0);
2443 
2444 	case VT_RELDISP:	/* screen switcher ioctl */
2445 		/*
2446 		 * This must be the current vty which is in the VT_PROCESS
2447 		 * switching mode...
2448 		 */
2449 		if ((vw != vd->vd_curwindow) || (vw->vw_smode.mode !=
2450 		    VT_PROCESS)) {
2451 			return (EINVAL);
2452 		}
2453 		/* ...and this process is controlling it. */
2454 		if (vw->vw_proc != td->td_proc) {
2455 			return (EPERM);
2456 		}
2457 		error = EINVAL;
2458 		switch(*(int *)data) {
2459 		case VT_FALSE:	/* user refuses to release screen, abort */
2460 			if ((error = finish_vt_rel(vw, FALSE, &s)) == 0)
2461 				DPRINTF(5, "%s%d: VT_RELDISP: VT_FALSE\n",
2462 				    SC_DRIVER_NAME, VT_UNIT(vw));
2463 			break;
2464 		case VT_TRUE:	/* user has released screen, go on */
2465 			/* finish_vt_rel(..., TRUE, ...) should not be locked */
2466 			if (vw->vw_flags & VWF_SWWAIT_REL) {
2467 				if ((error = finish_vt_rel(vw, TRUE, &s)) == 0)
2468 					DPRINTF(5, "%s%d: VT_RELDISP: VT_TRUE\n",
2469 					    SC_DRIVER_NAME, VT_UNIT(vw));
2470 			} else {
2471 				error = EINVAL;
2472 			}
2473 			return (error);
2474 		case VT_ACKACQ:	/* acquire acknowledged, switch completed */
2475 			if ((error = finish_vt_acq(vw)) == 0)
2476 				DPRINTF(5, "%s%d: VT_RELDISP: VT_ACKACQ\n",
2477 				    SC_DRIVER_NAME, VT_UNIT(vw));
2478 			break;
2479 		default:
2480 			break;
2481 		}
2482 		return (error);
2483 	}
2484 
2485 	return (ENOIOCTL);
2486 }
2487 
2488 static struct vt_window *
2489 vt_allocate_window(struct vt_device *vd, unsigned int window)
2490 {
2491 	struct vt_window *vw;
2492 	struct terminal *tm;
2493 	term_pos_t size;
2494 	struct winsize wsz;
2495 
2496 	vw = malloc(sizeof *vw, M_VT, M_WAITOK|M_ZERO);
2497 	vw->vw_device = vd;
2498 	vw->vw_number = window;
2499 	vw->vw_kbdmode = K_XLATE;
2500 
2501 	if ((vd->vd_flags & VDF_TEXTMODE) == 0) {
2502 		vw->vw_font = vtfont_ref(&vt_font_default);
2503 		vt_compute_drawable_area(vw);
2504 	}
2505 
2506 	vt_termsize(vd, vw->vw_font, &size);
2507 	vt_winsize(vd, vw->vw_font, &wsz);
2508 	vtbuf_init(&vw->vw_buf, &size);
2509 
2510 	tm = vw->vw_terminal = terminal_alloc(&vt_termclass, vw);
2511 	terminal_set_winsize(tm, &wsz);
2512 	vd->vd_windows[window] = vw;
2513 	callout_init(&vw->vw_proc_dead_timer, 0);
2514 
2515 	return (vw);
2516 }
2517 
2518 void
2519 vt_upgrade(struct vt_device *vd)
2520 {
2521 	struct vt_window *vw;
2522 	unsigned int i;
2523 	int register_handlers;
2524 
2525 	if (!vty_enabled(VTY_VT))
2526 		return;
2527 	if (main_vd->vd_driver == NULL)
2528 		return;
2529 
2530 	for (i = 0; i < VT_MAXWINDOWS; i++) {
2531 		vw = vd->vd_windows[i];
2532 		if (vw == NULL) {
2533 			/* New window. */
2534 			vw = vt_allocate_window(vd, i);
2535 		}
2536 		if (!(vw->vw_flags & VWF_READY)) {
2537 			callout_init(&vw->vw_proc_dead_timer, 0);
2538 			terminal_maketty(vw->vw_terminal, "v%r", VT_UNIT(vw));
2539 			vw->vw_flags |= VWF_READY;
2540 			if (vw->vw_flags & VWF_CONSOLE) {
2541 				/* For existing console window. */
2542 				EVENTHANDLER_REGISTER(shutdown_pre_sync,
2543 				    vt_window_switch, vw, SHUTDOWN_PRI_DEFAULT);
2544 			}
2545 		}
2546 
2547 	}
2548 	VT_LOCK(vd);
2549 	if (vd->vd_curwindow == NULL)
2550 		vd->vd_curwindow = vd->vd_windows[VT_CONSWINDOW];
2551 
2552 	register_handlers = 0;
2553 	if (!(vd->vd_flags & VDF_ASYNC)) {
2554 		/* Attach keyboard. */
2555 		vt_allocate_keyboard(vd);
2556 
2557 		/* Init 25 Hz timer. */
2558 		callout_init_mtx(&vd->vd_timer, &vd->vd_lock, 0);
2559 
2560 		/* Start timer when everything ready. */
2561 		vd->vd_flags |= VDF_ASYNC;
2562 		callout_reset(&vd->vd_timer, hz / VT_TIMERFREQ, vt_timer, vd);
2563 		vd->vd_timer_armed = 1;
2564 		register_handlers = 1;
2565 	}
2566 
2567 	VT_UNLOCK(vd);
2568 
2569 	/* Refill settings with new sizes. */
2570 	vt_resize(vd);
2571 
2572 	if (register_handlers) {
2573 		/* Register suspend/resume handlers. */
2574 		EVENTHANDLER_REGISTER(power_suspend_early, vt_suspend_handler,
2575 		    vd, EVENTHANDLER_PRI_ANY);
2576 		EVENTHANDLER_REGISTER(power_resume, vt_resume_handler, vd,
2577 		    EVENTHANDLER_PRI_ANY);
2578 	}
2579 }
2580 
2581 static void
2582 vt_resize(struct vt_device *vd)
2583 {
2584 	struct vt_window *vw;
2585 	int i;
2586 
2587 	for (i = 0; i < VT_MAXWINDOWS; i++) {
2588 		vw = vd->vd_windows[i];
2589 		VT_LOCK(vd);
2590 		/* Assign default font to window, if not textmode. */
2591 		if (!(vd->vd_flags & VDF_TEXTMODE) && vw->vw_font == NULL)
2592 			vw->vw_font = vtfont_ref(&vt_font_default);
2593 		VT_UNLOCK(vd);
2594 
2595 		/* Resize terminal windows */
2596 		while (vt_change_font(vw, vw->vw_font) == EBUSY) {
2597 			DPRINTF(100, "%s: vt_change_font() is busy, "
2598 			    "window %d\n", __func__, i);
2599 		}
2600 	}
2601 }
2602 
2603 static void
2604 vt_replace_backend(const struct vt_driver *drv, void *softc)
2605 {
2606 	struct vt_device *vd;
2607 
2608 	vd = main_vd;
2609 
2610 	if (vd->vd_flags & VDF_ASYNC) {
2611 		/* Stop vt_flush periodic task. */
2612 		VT_LOCK(vd);
2613 		vt_suspend_flush_timer(vd);
2614 		VT_UNLOCK(vd);
2615 		/*
2616 		 * Mute current terminal until we done. vt_change_font (called
2617 		 * from vt_resize) will unmute it.
2618 		 */
2619 		terminal_mute(vd->vd_curwindow->vw_terminal, 1);
2620 	}
2621 
2622 	/*
2623 	 * Reset VDF_TEXTMODE flag, driver who require that flag (vt_vga) will
2624 	 * set it.
2625 	 */
2626 	VT_LOCK(vd);
2627 	vd->vd_flags &= ~VDF_TEXTMODE;
2628 
2629 	if (drv != NULL) {
2630 		/*
2631 		 * We want to upgrade from the current driver to the
2632 		 * given driver.
2633 		 */
2634 
2635 		vd->vd_prev_driver = vd->vd_driver;
2636 		vd->vd_prev_softc = vd->vd_softc;
2637 		vd->vd_driver = drv;
2638 		vd->vd_softc = softc;
2639 
2640 		vd->vd_driver->vd_init(vd);
2641 	} else if (vd->vd_prev_driver != NULL && vd->vd_prev_softc != NULL) {
2642 		/*
2643 		 * No driver given: we want to downgrade to the previous
2644 		 * driver.
2645 		 */
2646 		const struct vt_driver *old_drv;
2647 		void *old_softc;
2648 
2649 		old_drv = vd->vd_driver;
2650 		old_softc = vd->vd_softc;
2651 
2652 		vd->vd_driver = vd->vd_prev_driver;
2653 		vd->vd_softc = vd->vd_prev_softc;
2654 		vd->vd_prev_driver = NULL;
2655 		vd->vd_prev_softc = NULL;
2656 
2657 		vd->vd_flags |= VDF_DOWNGRADE;
2658 
2659 		vd->vd_driver->vd_init(vd);
2660 
2661 		if (old_drv->vd_fini)
2662 			old_drv->vd_fini(vd, old_softc);
2663 
2664 		vd->vd_flags &= ~VDF_DOWNGRADE;
2665 	}
2666 
2667 	VT_UNLOCK(vd);
2668 
2669 	/* Update windows sizes and initialize last items. */
2670 	vt_upgrade(vd);
2671 
2672 #ifdef DEV_SPLASH
2673 	if (vd->vd_flags & VDF_SPLASH)
2674 		vtterm_splash(vd);
2675 #endif
2676 
2677 	if (vd->vd_flags & VDF_ASYNC) {
2678 		/* Allow to put chars now. */
2679 		terminal_mute(vd->vd_curwindow->vw_terminal, 0);
2680 		/* Rerun timer for screen updates. */
2681 		vt_resume_flush_timer(vd, 0);
2682 	}
2683 
2684 	/*
2685 	 * Register as console. If it already registered, cnadd() will ignore
2686 	 * it.
2687 	 */
2688 	termcn_cnregister(vd->vd_windows[VT_CONSWINDOW]->vw_terminal);
2689 }
2690 
2691 static void
2692 vt_suspend_handler(void *priv)
2693 {
2694 	struct vt_device *vd;
2695 
2696 	vd = priv;
2697 	if (vd->vd_driver != NULL && vd->vd_driver->vd_suspend != NULL)
2698 		vd->vd_driver->vd_suspend(vd);
2699 }
2700 
2701 static void
2702 vt_resume_handler(void *priv)
2703 {
2704 	struct vt_device *vd;
2705 
2706 	vd = priv;
2707 	if (vd->vd_driver != NULL && vd->vd_driver->vd_resume != NULL)
2708 		vd->vd_driver->vd_resume(vd);
2709 }
2710 
2711 void
2712 vt_allocate(const struct vt_driver *drv, void *softc)
2713 {
2714 
2715 	if (!vty_enabled(VTY_VT))
2716 		return;
2717 
2718 	if (main_vd->vd_driver == NULL) {
2719 		main_vd->vd_driver = drv;
2720 		printf("VT: initialize with new VT driver \"%s\".\n",
2721 		    drv->vd_name);
2722 	} else {
2723 		/*
2724 		 * Check if have rights to replace current driver. For example:
2725 		 * it is bad idea to replace KMS driver with generic VGA one.
2726 		 */
2727 		if (drv->vd_priority <= main_vd->vd_driver->vd_priority) {
2728 			printf("VT: Driver priority %d too low. Current %d\n ",
2729 			    drv->vd_priority, main_vd->vd_driver->vd_priority);
2730 			return;
2731 		}
2732 		printf("VT: Replacing driver \"%s\" with new \"%s\".\n",
2733 		    main_vd->vd_driver->vd_name, drv->vd_name);
2734 	}
2735 
2736 	vt_replace_backend(drv, softc);
2737 }
2738 
2739 void
2740 vt_deallocate(const struct vt_driver *drv, void *softc)
2741 {
2742 
2743 	if (!vty_enabled(VTY_VT))
2744 		return;
2745 
2746 	if (main_vd->vd_prev_driver == NULL ||
2747 	    main_vd->vd_driver != drv ||
2748 	    main_vd->vd_softc != softc)
2749 		return;
2750 
2751 	printf("VT: Switching back from \"%s\" to \"%s\".\n",
2752 	    main_vd->vd_driver->vd_name, main_vd->vd_prev_driver->vd_name);
2753 
2754 	vt_replace_backend(NULL, NULL);
2755 }
2756 
2757 void
2758 vt_suspend(struct vt_device *vd)
2759 {
2760 	int error;
2761 
2762 	if (vt_suspendswitch == 0)
2763 		return;
2764 	/* Save current window. */
2765 	vd->vd_savedwindow = vd->vd_curwindow;
2766 	/* Ask holding process to free window and switch to console window */
2767 	vt_proc_window_switch(vd->vd_windows[VT_CONSWINDOW]);
2768 
2769 	/* Wait for the window switch to complete. */
2770 	error = 0;
2771 	VT_LOCK(vd);
2772 	while (vd->vd_curwindow != vd->vd_windows[VT_CONSWINDOW] && error == 0)
2773 		error = cv_wait_sig(&vd->vd_winswitch, &vd->vd_lock);
2774 	VT_UNLOCK(vd);
2775 }
2776 
2777 void
2778 vt_resume(struct vt_device *vd)
2779 {
2780 
2781 	if (vt_suspendswitch == 0)
2782 		return;
2783 	/* Switch back to saved window */
2784 	if (vd->vd_savedwindow != NULL)
2785 		vt_proc_window_switch(vd->vd_savedwindow);
2786 	vd->vd_savedwindow = NULL;
2787 }
2788