xref: /freebsd/sys/dev/vt/vt_core.c (revision cc3f4b99653c34ae64f8a1fddea370abefef680e)
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/priv.h>
49 #include <sys/proc.h>
50 #include <sys/reboot.h>
51 #include <sys/systm.h>
52 #include <sys/terminal.h>
53 
54 #include <dev/kbd/kbdreg.h>
55 #include <dev/vt/vt.h>
56 
57 #if defined(__i386__) || defined(__amd64__)
58 #include <machine/psl.h>
59 #include <machine/frame.h>
60 #endif
61 
62 static tc_bell_t	vtterm_bell;
63 static tc_cursor_t	vtterm_cursor;
64 static tc_putchar_t	vtterm_putchar;
65 static tc_fill_t	vtterm_fill;
66 static tc_copy_t	vtterm_copy;
67 static tc_param_t	vtterm_param;
68 static tc_done_t	vtterm_done;
69 
70 static tc_cnprobe_t	vtterm_cnprobe;
71 static tc_cngetc_t	vtterm_cngetc;
72 
73 static tc_opened_t	vtterm_opened;
74 static tc_ioctl_t	vtterm_ioctl;
75 static tc_mmap_t	vtterm_mmap;
76 
77 const struct terminal_class vt_termclass = {
78 	.tc_bell	= vtterm_bell,
79 	.tc_cursor	= vtterm_cursor,
80 	.tc_putchar	= vtterm_putchar,
81 	.tc_fill	= vtterm_fill,
82 	.tc_copy	= vtterm_copy,
83 	.tc_param	= vtterm_param,
84 	.tc_done	= vtterm_done,
85 
86 	.tc_cnprobe	= vtterm_cnprobe,
87 	.tc_cngetc	= vtterm_cngetc,
88 
89 	.tc_opened	= vtterm_opened,
90 	.tc_ioctl	= vtterm_ioctl,
91 	.tc_mmap	= vtterm_mmap,
92 };
93 
94 /*
95  * Use a constant timer of 25 Hz to redraw the screen.
96  *
97  * XXX: In theory we should only fire up the timer when there is really
98  * activity. Unfortunately we cannot always start timers. We really
99  * don't want to process kernel messages synchronously, because it
100  * really slows down the system.
101  */
102 #define	VT_TIMERFREQ	25
103 
104 /* Bell pitch/duration. */
105 #define VT_BELLDURATION	((5 * hz + 99) / 100)
106 #define VT_BELLPITCH	800
107 
108 #define	VT_LOCK(vd)	mtx_lock(&(vd)->vd_lock)
109 #define	VT_UNLOCK(vd)	mtx_unlock(&(vd)->vd_lock)
110 
111 #define	VT_UNIT(vw)	((vw)->vw_device->vd_unit * VT_MAXWINDOWS + \
112 			(vw)->vw_number)
113 
114 /* XXX while syscons is here. */
115 int sc_txtmouse_no_retrace_wait;
116 
117 static SYSCTL_NODE(_kern, OID_AUTO, vt, CTLFLAG_RD, 0, "vt(9) parameters");
118 VT_SYSCTL_INT(enable_altgr, 1, "Enable AltGr key (Do not assume R.Alt as Alt)");
119 VT_SYSCTL_INT(debug, 0, "vt(9) debug level");
120 VT_SYSCTL_INT(deadtimer, 15, "Time to wait busy process in VT_PROCESS mode");
121 VT_SYSCTL_INT(suspendswitch, 1, "Switch to VT0 before suspend");
122 
123 static unsigned int vt_unit = 0;
124 static MALLOC_DEFINE(M_VT, "vt", "vt device");
125 struct vt_device *main_vd = NULL;
126 
127 /* Boot logo. */
128 extern unsigned int vt_logo_width;
129 extern unsigned int vt_logo_height;
130 extern unsigned int vt_logo_depth;
131 extern unsigned char vt_logo_image[];
132 
133 /* Font. */
134 extern struct vt_font vt_font_default;
135 #ifndef SC_NO_CUTPASTE
136 extern struct mouse_cursor vt_default_mouse_pointer;
137 #endif
138 
139 static int signal_vt_rel(struct vt_window *);
140 static int signal_vt_acq(struct vt_window *);
141 static int finish_vt_rel(struct vt_window *, int, int *);
142 static int finish_vt_acq(struct vt_window *);
143 static int vt_window_switch(struct vt_window *);
144 static int vt_late_window_switch(struct vt_window *);
145 static int vt_proc_alive(struct vt_window *);
146 static void vt_resize(struct vt_device *);
147 static void vt_update_static(void *);
148 
149 SET_DECLARE(vt_drv_set, struct vt_driver);
150 
151 #define _VTDEFH MAX(100, PIXEL_HEIGHT(VT_FB_DEFAULT_HEIGHT))
152 #define _VTDEFW MAX(200, PIXEL_WIDTH(VT_FB_DEFAULT_WIDTH))
153 
154 static struct terminal	vt_consterm;
155 static struct vt_window	vt_conswindow;
156 static struct vt_device	vt_consdev = {
157 	.vd_driver = NULL,
158 	.vd_softc = NULL,
159 	.vd_flags = VDF_INVALID,
160 	.vd_windows = { [VT_CONSWINDOW] =  &vt_conswindow, },
161 	.vd_curwindow = &vt_conswindow,
162 	.vd_markedwin = NULL,
163 	.vd_kbstate = 0,
164 };
165 static term_char_t vt_constextbuf[(_VTDEFW) * (VBF_DEFAULT_HISTORY_SIZE)];
166 static term_char_t *vt_constextbufrows[VBF_DEFAULT_HISTORY_SIZE];
167 static struct vt_window	vt_conswindow = {
168 	.vw_number = VT_CONSWINDOW,
169 	.vw_flags = VWF_CONSOLE,
170 	.vw_buf = {
171 		.vb_buffer = vt_constextbuf,
172 		.vb_rows = vt_constextbufrows,
173 		.vb_history_size = VBF_DEFAULT_HISTORY_SIZE,
174 		.vb_curroffset = 0,
175 		.vb_roffset = 0,
176 		.vb_flags = VBF_STATIC,
177 		.vb_mark_start = {.tp_row = 0, .tp_col = 0,},
178 		.vb_mark_end = {.tp_row = 0, .tp_col = 0,},
179 		.vb_scr_size = {
180 			.tp_row = _VTDEFH,
181 			.tp_col = _VTDEFW,
182 		},
183 	},
184 	.vw_device = &vt_consdev,
185 	.vw_terminal = &vt_consterm,
186 	.vw_kbdmode = K_XLATE,
187 };
188 static struct terminal vt_consterm = {
189 	.tm_class = &vt_termclass,
190 	.tm_softc = &vt_conswindow,
191 	.tm_flags = TF_CONS,
192 };
193 static struct consdev vt_consterm_consdev = {
194 	.cn_ops = &termcn_cnops,
195 	.cn_arg = &vt_consterm,
196 	.cn_name = "ttyv0",
197 };
198 
199 /* Add to set of consoles. */
200 DATA_SET(cons_set, vt_consterm_consdev);
201 
202 /*
203  * Right after kmem is done to allow early drivers to use locking and allocate
204  * memory.
205  */
206 SYSINIT(vt_update_static, SI_SUB_KMEM, SI_ORDER_ANY, vt_update_static,
207     &vt_consdev);
208 /* Delay until all devices attached, to not waste time. */
209 SYSINIT(vt_early_cons, SI_SUB_INT_CONFIG_HOOKS, SI_ORDER_ANY, vt_upgrade,
210     &vt_consdev);
211 
212 /* Initialize locks/mem depended members. */
213 static void
214 vt_update_static(void *dummy)
215 {
216 
217 	if (main_vd != NULL) {
218 		printf("VT: running with driver \"%s\".\n",
219 		    main_vd->vd_driver->vd_name);
220 		mtx_init(&main_vd->vd_lock, "vtdev", NULL, MTX_DEF);
221 		cv_init(&main_vd->vd_winswitch, "vtwswt");
222 	}
223 }
224 
225 static void
226 vt_switch_timer(void *arg)
227 {
228 
229 	vt_late_window_switch((struct vt_window *)arg);
230 }
231 
232 static int
233 vt_window_preswitch(struct vt_window *vw, struct vt_window *curvw)
234 {
235 
236 	DPRINTF(40, "%s\n", __func__);
237 	curvw->vw_switch_to = vw;
238 	/* Set timer to allow switch in case when process hang. */
239 	callout_reset(&vw->vw_proc_dead_timer, hz * vt_deadtimer,
240 	    vt_switch_timer, (void *)vw);
241 	/* Notify process about vt switch attempt. */
242 	DPRINTF(30, "%s: Notify process.\n", __func__);
243 	signal_vt_rel(curvw);
244 
245 	return (0);
246 }
247 
248 static int
249 vt_window_postswitch(struct vt_window *vw)
250 {
251 
252 	signal_vt_acq(vw);
253 	return (0);
254 }
255 
256 /* vt_late_window_switch will done VT switching for regular case. */
257 static int
258 vt_late_window_switch(struct vt_window *vw)
259 {
260 	int ret;
261 
262 	callout_stop(&vw->vw_proc_dead_timer);
263 
264 	ret = vt_window_switch(vw);
265 	if (ret)
266 		return (ret);
267 
268 	/* Notify owner process about terminal availability. */
269 	if (vw->vw_smode.mode == VT_PROCESS) {
270 		ret = vt_window_postswitch(vw);
271 	}
272 	return (ret);
273 }
274 
275 /* Switch window. */
276 static int
277 vt_proc_window_switch(struct vt_window *vw)
278 {
279 	struct vt_window *curvw;
280 	struct vt_device *vd;
281 	int ret;
282 
283 	if (vw->vw_flags & VWF_VTYLOCK)
284 		return (EBUSY);
285 
286 	vd = vw->vw_device;
287 	curvw = vd->vd_curwindow;
288 
289 	/* Ask current process permitions to switch away. */
290 	if (curvw->vw_smode.mode == VT_PROCESS) {
291 		DPRINTF(30, "%s: VT_PROCESS ", __func__);
292 		if (vt_proc_alive(curvw) == FALSE) {
293 			DPRINTF(30, "Dead. Cleaning.");
294 			/* Dead */
295 		} else {
296 			DPRINTF(30, "%s: Signaling process.\n", __func__);
297 			/* Alive, try to ask him. */
298 			ret = vt_window_preswitch(vw, curvw);
299 			/* Wait for process answer or timeout. */
300 			return (ret);
301 		}
302 		DPRINTF(30, "\n");
303 	}
304 
305 	ret = vt_late_window_switch(vw);
306 	return (ret);
307 }
308 
309 /* Switch window ignoring process locking. */
310 static int
311 vt_window_switch(struct vt_window *vw)
312 {
313 	struct vt_device *vd = vw->vw_device;
314 	struct vt_window *curvw = vd->vd_curwindow;
315 	keyboard_t *kbd;
316 
317 	VT_LOCK(vd);
318 	if (curvw == vw) {
319 		/* Nothing to do. */
320 		VT_UNLOCK(vd);
321 		return (0);
322 	}
323 	if (!(vw->vw_flags & (VWF_OPENED|VWF_CONSOLE))) {
324 		VT_UNLOCK(vd);
325 		return (EINVAL);
326 	}
327 
328 	vd->vd_curwindow = vw;
329 	vd->vd_flags |= VDF_INVALID;
330 	cv_broadcast(&vd->vd_winswitch);
331 	VT_UNLOCK(vd);
332 
333 	if (vd->vd_driver->vd_postswitch)
334 		vd->vd_driver->vd_postswitch(vd);
335 
336 	/* Restore per-window keyboard mode. */
337 	mtx_lock(&Giant);
338 	kbd = kbd_get_keyboard(vd->vd_keyboard);
339 	if (kbd != NULL) {
340 		kbdd_ioctl(kbd, KDSKBMODE, (void *)&vw->vw_kbdmode);
341 	}
342 	mtx_unlock(&Giant);
343 	DPRINTF(10, "%s(ttyv%d) done\n", __func__, vw->vw_number);
344 
345 	return (0);
346 }
347 
348 static inline void
349 vt_termsize(struct vt_device *vd, struct vt_font *vf, term_pos_t *size)
350 {
351 
352 	size->tp_row = vd->vd_height;
353 	size->tp_col = vd->vd_width;
354 	if (vf != NULL) {
355 		size->tp_row /= vf->vf_height;
356 		size->tp_col /= vf->vf_width;
357 	}
358 }
359 
360 static inline void
361 vt_winsize(struct vt_device *vd, struct vt_font *vf, struct winsize *size)
362 {
363 
364 	size->ws_row = size->ws_ypixel = vd->vd_height;
365 	size->ws_col = size->ws_xpixel = vd->vd_width;
366 	if (vf != NULL) {
367 		size->ws_row /= vf->vf_height;
368 		size->ws_col /= vf->vf_width;
369 	}
370 }
371 
372 static void
373 vt_scroll(struct vt_window *vw, int offset, int whence)
374 {
375 	int diff;
376 	term_pos_t size;
377 
378 	if ((vw->vw_flags & VWF_SCROLL) == 0)
379 		return;
380 
381 	vt_termsize(vw->vw_device, vw->vw_font, &size);
382 
383 	diff = vthistory_seek(&vw->vw_buf, offset, whence);
384 	/*
385 	 * Offset changed, please update Nth lines on sceen.
386 	 * +N - Nth lines at top;
387 	 * -N - Nth lines at bottom.
388 	 */
389 
390 	if (diff < -size.tp_row || diff > size.tp_row) {
391 		vw->vw_device->vd_flags |= VDF_INVALID;
392 		return;
393 	}
394 	vw->vw_device->vd_flags |= VDF_INVALID; /*XXX*/
395 }
396 
397 static int
398 vt_machine_kbdevent(int c)
399 {
400 
401 	switch (c) {
402 	case SPCLKEY | DBG:
403 		kdb_enter(KDB_WHY_BREAK, "manual escape to debugger");
404 		return (1);
405 	case SPCLKEY | RBT:
406 		/* XXX: Make this configurable! */
407 		shutdown_nice(0);
408 		return (1);
409 	case SPCLKEY | HALT:
410 		shutdown_nice(RB_HALT);
411 		return (1);
412 	case SPCLKEY | PDWN:
413 		shutdown_nice(RB_HALT|RB_POWEROFF);
414 		return (1);
415 	};
416 
417 	return (0);
418 }
419 
420 static void
421 vt_scrollmode_kbdevent(struct vt_window *vw, int c, int console)
422 {
423 	struct vt_device *vd;
424 	term_pos_t size;
425 
426 	vd = vw->vw_device;
427 	/* Only special keys handled in ScrollLock mode */
428 	if ((c & SPCLKEY) == 0)
429 		return;
430 
431 	c &= ~SPCLKEY;
432 
433 	if (console == 0) {
434 		if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) {
435 			vw = vd->vd_windows[c - F_SCR];
436 			if (vw != NULL)
437 				vt_proc_window_switch(vw);
438 			return;
439 		}
440 		VT_LOCK(vd);
441 	}
442 
443 	switch (c) {
444 	case SLK: {
445 		/* Turn scrolling off. */
446 		vt_scroll(vw, 0, VHS_END);
447 		VTBUF_SLCK_DISABLE(&vw->vw_buf);
448 		vw->vw_flags &= ~VWF_SCROLL;
449 		break;
450 	}
451 	case FKEY | F(49): /* Home key. */
452 		vt_scroll(vw, 0, VHS_SET);
453 		break;
454 	case FKEY | F(50): /* Arrow up. */
455 		vt_scroll(vw, -1, VHS_CUR);
456 		break;
457 	case FKEY | F(51): /* Page up. */
458 		vt_termsize(vd, vw->vw_font, &size);
459 		vt_scroll(vw, -size.tp_row, VHS_CUR);
460 		break;
461 	case FKEY | F(57): /* End key. */
462 		vt_scroll(vw, 0, VHS_END);
463 		break;
464 	case FKEY | F(58): /* Arrow down. */
465 		vt_scroll(vw, 1, VHS_CUR);
466 		break;
467 	case FKEY | F(59): /* Page down. */
468 		vt_termsize(vd, vw->vw_font, &size);
469 		vt_scroll(vw, size.tp_row, VHS_CUR);
470 		break;
471 	}
472 
473 	if (console == 0)
474 		VT_UNLOCK(vd);
475 }
476 
477 static int
478 vt_processkey(keyboard_t *kbd, struct vt_device *vd, int c)
479 {
480 	struct vt_window *vw = vd->vd_curwindow;
481 	int state = 0;
482 
483 #if VT_ALT_TO_ESC_HACK
484 	if (c & RELKEY) {
485 		switch (c & ~RELKEY) {
486 		case (SPCLKEY | RALT):
487 			if (vt_enable_altgr != 0)
488 				break;
489 		case (SPCLKEY | LALT):
490 			vd->vd_kbstate &= ~ALKED;
491 		}
492 		/* Other keys ignored for RELKEY event. */
493 		return (0);
494 	} else {
495 		switch (c & ~RELKEY) {
496 		case (SPCLKEY | RALT):
497 			if (vt_enable_altgr != 0)
498 				break;
499 		case (SPCLKEY | LALT):
500 			vd->vd_kbstate |= ALKED;
501 		}
502 	}
503 #else
504 	if (c & RELKEY)
505 		/* Other keys ignored for RELKEY event. */
506 		return (0);
507 #endif
508 
509 	if (vt_machine_kbdevent(c))
510 		return (0);
511 
512 	if (vw->vw_flags & VWF_SCROLL) {
513 		vt_scrollmode_kbdevent(vw, c, 0/* Not a console */);
514 		/* Scroll mode keys handled, nothing to do more. */
515 		return (0);
516 	}
517 
518 	if (c & SPCLKEY) {
519 		c &= ~SPCLKEY;
520 
521 		if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) {
522 			vw = vd->vd_windows[c - F_SCR];
523 			if (vw != NULL)
524 				vt_proc_window_switch(vw);
525 			return (0);
526 		}
527 
528 		switch (c) {
529 		case SLK: {
530 
531 			kbdd_ioctl(kbd, KDGKBSTATE, (caddr_t)&state);
532 			VT_LOCK(vd);
533 			if (state & SLKED) {
534 				/* Turn scrolling on. */
535 				vw->vw_flags |= VWF_SCROLL;
536 				VTBUF_SLCK_ENABLE(&vw->vw_buf);
537 			} else {
538 				/* Turn scrolling off. */
539 				vw->vw_flags &= ~VWF_SCROLL;
540 				VTBUF_SLCK_DISABLE(&vw->vw_buf);
541 				vt_scroll(vw, 0, VHS_END);
542 			}
543 			VT_UNLOCK(vd);
544 			break;
545 		}
546 		case FKEY | F(1):  case FKEY | F(2):  case FKEY | F(3):
547 		case FKEY | F(4):  case FKEY | F(5):  case FKEY | F(6):
548 		case FKEY | F(7):  case FKEY | F(8):  case FKEY | F(9):
549 		case FKEY | F(10): case FKEY | F(11): case FKEY | F(12):
550 			/* F1 through F12 keys. */
551 			terminal_input_special(vw->vw_terminal,
552 			    TKEY_F1 + c - (FKEY | F(1)));
553 			break;
554 		case FKEY | F(49): /* Home key. */
555 			terminal_input_special(vw->vw_terminal, TKEY_HOME);
556 			break;
557 		case FKEY | F(50): /* Arrow up. */
558 			terminal_input_special(vw->vw_terminal, TKEY_UP);
559 			break;
560 		case FKEY | F(51): /* Page up. */
561 			terminal_input_special(vw->vw_terminal, TKEY_PAGE_UP);
562 			break;
563 		case FKEY | F(53): /* Arrow left. */
564 			terminal_input_special(vw->vw_terminal, TKEY_LEFT);
565 			break;
566 		case FKEY | F(55): /* Arrow right. */
567 			terminal_input_special(vw->vw_terminal, TKEY_RIGHT);
568 			break;
569 		case FKEY | F(57): /* End key. */
570 			terminal_input_special(vw->vw_terminal, TKEY_END);
571 			break;
572 		case FKEY | F(58): /* Arrow down. */
573 			terminal_input_special(vw->vw_terminal, TKEY_DOWN);
574 			break;
575 		case FKEY | F(59): /* Page down. */
576 			terminal_input_special(vw->vw_terminal, TKEY_PAGE_DOWN);
577 			break;
578 		case FKEY | F(60): /* Insert key. */
579 			terminal_input_special(vw->vw_terminal, TKEY_INSERT);
580 			break;
581 		case FKEY | F(61): /* Delete key. */
582 			terminal_input_special(vw->vw_terminal, TKEY_DELETE);
583 			break;
584 		}
585 	} else if (KEYFLAGS(c) == 0) {
586 		/* Don't do UTF-8 conversion when doing raw mode. */
587 		if (vw->vw_kbdmode == K_XLATE) {
588 #if VT_ALT_TO_ESC_HACK
589 			if (vd->vd_kbstate & ALKED) {
590 				/*
591 				 * Prepend ESC sequence if one of ALT keys down.
592 				 */
593 				terminal_input_char(vw->vw_terminal, 0x1b);
594 			}
595 #endif
596 
597 			terminal_input_char(vw->vw_terminal, KEYCHAR(c));
598 		} else
599 			terminal_input_raw(vw->vw_terminal, c);
600 	}
601 	return (0);
602 }
603 
604 static int
605 vt_kbdevent(keyboard_t *kbd, int event, void *arg)
606 {
607 	struct vt_device *vd = arg;
608 	int c;
609 
610 	switch (event) {
611 	case KBDIO_KEYINPUT:
612 		break;
613 	case KBDIO_UNLOADING:
614 		mtx_lock(&Giant);
615 		vd->vd_keyboard = -1;
616 		kbd_release(kbd, (void *)&vd->vd_keyboard);
617 		mtx_unlock(&Giant);
618 		return (0);
619 	default:
620 		return (EINVAL);
621 	}
622 
623 	while ((c = kbdd_read_char(kbd, 0)) != NOKEY)
624 		vt_processkey(kbd, vd, c);
625 
626 	return (0);
627 }
628 
629 static int
630 vt_allocate_keyboard(struct vt_device *vd)
631 {
632 	int		 idx0, idx;
633 	keyboard_t	*k0, *k;
634 	keyboard_info_t	 ki;
635 
636 	idx0 = kbd_allocate("kbdmux", -1, (void *)&vd->vd_keyboard,
637 	    vt_kbdevent, vd);
638 	/* XXX: kb_token lost */
639 	vd->vd_keyboard = idx0;
640 	if (idx0 != -1) {
641 		DPRINTF(20, "%s: kbdmux allocated, idx = %d\n", __func__, idx0);
642 		k0 = kbd_get_keyboard(idx0);
643 
644 		for (idx = kbd_find_keyboard2("*", -1, 0);
645 		     idx != -1;
646 		     idx = kbd_find_keyboard2("*", -1, idx + 1)) {
647 			k = kbd_get_keyboard(idx);
648 
649 			if (idx == idx0 || KBD_IS_BUSY(k))
650 				continue;
651 
652 			bzero(&ki, sizeof(ki));
653 			strcpy(ki.kb_name, k->kb_name);
654 			ki.kb_unit = k->kb_unit;
655 
656 			kbdd_ioctl(k0, KBADDKBD, (caddr_t) &ki);
657 		}
658 	} else {
659 		DPRINTF(20, "%s: no kbdmux allocated\n", __func__);
660 		idx0 = kbd_allocate("*", -1, (void *)&vd->vd_keyboard,
661 		    vt_kbdevent, vd);
662 	}
663 	DPRINTF(20, "%s: vd_keyboard = %d\n", __func__, vd->vd_keyboard);
664 
665 	return (idx0);
666 }
667 
668 static void
669 vtterm_bell(struct terminal *tm)
670 {
671 	struct vt_window *vw = tm->tm_softc;
672 	struct vt_device *vd = vw->vw_device;
673 
674 	if (vd->vd_flags & VDF_QUIET_BELL)
675 		return;
676 
677 	sysbeep(1193182 / VT_BELLPITCH, VT_BELLDURATION);
678 }
679 
680 static void
681 vtterm_beep(struct terminal *tm, u_int param)
682 {
683 	u_int freq, period;
684 
685 	if ((param == 0) || ((param & 0xffff) == 0)) {
686 		vtterm_bell(tm);
687 		return;
688 	}
689 
690 	period = ((param >> 16) & 0xffff) * hz / 1000;
691 	freq = 1193182 / (param & 0xffff);
692 
693 	sysbeep(freq, period);
694 }
695 
696 static void
697 vtterm_cursor(struct terminal *tm, const term_pos_t *p)
698 {
699 	struct vt_window *vw = tm->tm_softc;
700 
701 	vtbuf_cursor_position(&vw->vw_buf, p);
702 }
703 
704 static void
705 vtterm_putchar(struct terminal *tm, const term_pos_t *p, term_char_t c)
706 {
707 	struct vt_window *vw = tm->tm_softc;
708 
709 	vtbuf_putchar(&vw->vw_buf, p, c);
710 }
711 
712 static void
713 vtterm_fill(struct terminal *tm, const term_rect_t *r, term_char_t c)
714 {
715 	struct vt_window *vw = tm->tm_softc;
716 
717 	vtbuf_fill_locked(&vw->vw_buf, r, c);
718 }
719 
720 static void
721 vtterm_copy(struct terminal *tm, const term_rect_t *r,
722     const term_pos_t *p)
723 {
724 	struct vt_window *vw = tm->tm_softc;
725 
726 	vtbuf_copy(&vw->vw_buf, r, p);
727 }
728 
729 static void
730 vtterm_param(struct terminal *tm, int cmd, unsigned int arg)
731 {
732 	struct vt_window *vw = tm->tm_softc;
733 
734 	switch (cmd) {
735 	case TP_SHOWCURSOR:
736 		vtbuf_cursor_visibility(&vw->vw_buf, arg);
737 		break;
738 	case TP_MOUSE:
739 		vw->vw_mouse_level = arg;
740 		break;
741 	}
742 }
743 
744 static inline void
745 vt_determine_colors(term_char_t c, int cursor,
746     term_color_t *fg, term_color_t *bg)
747 {
748 	term_color_t tmp;
749 	int invert;
750 
751 	invert = 0;
752 
753 	*fg = TCHAR_FGCOLOR(c);
754 	if (TCHAR_FORMAT(c) & TF_BOLD)
755 		*fg = TCOLOR_LIGHT(*fg);
756 	*bg = TCHAR_BGCOLOR(c);
757 
758 	if (TCHAR_FORMAT(c) & TF_REVERSE)
759 		invert ^= 1;
760 	if (cursor)
761 		invert ^= 1;
762 
763 	if (invert) {
764 		tmp = *fg;
765 		*fg = *bg;
766 		*bg = tmp;
767 	}
768 }
769 
770 static void
771 vt_bitblt_char(struct vt_device *vd, struct vt_font *vf, term_char_t c,
772     int iscursor, unsigned int row, unsigned int col)
773 {
774 	term_color_t fg, bg;
775 
776 	vt_determine_colors(c, iscursor, &fg, &bg);
777 
778 	if (vf != NULL) {
779 		const uint8_t *src;
780 		vt_axis_t top, left;
781 
782 		src = vtfont_lookup(vf, c);
783 
784 		/*
785 		 * Align the terminal to the centre of the screen.
786 		 * Fonts may not always be able to fill the entire
787 		 * screen.
788 		 */
789 		top = row * vf->vf_height + vd->vd_offset.tp_row;
790 		left = col * vf->vf_width + vd->vd_offset.tp_col;
791 
792 		vd->vd_driver->vd_bitbltchr(vd, src, NULL, 0, top, left,
793 		    vf->vf_width, vf->vf_height, fg, bg);
794 	} else {
795 		vd->vd_driver->vd_putchar(vd, TCHAR_CHARACTER(c),
796 		    row, col, fg, bg);
797 	}
798 }
799 
800 static void
801 vt_flush(struct vt_device *vd)
802 {
803 	struct vt_window *vw;
804 	struct vt_font *vf;
805 	struct vt_bufmask tmask;
806 	unsigned int row, col;
807 	term_rect_t tarea;
808 	term_pos_t size;
809 	term_char_t *r;
810 #ifndef SC_NO_CUTPASTE
811 	struct mouse_cursor *m;
812 	int bpl, h, w;
813 #endif
814 
815 	vw = vd->vd_curwindow;
816 	if (vw == NULL)
817 		return;
818 	vf = vw->vw_font;
819 	if (((vd->vd_flags & VDF_TEXTMODE) == 0) && (vf == NULL))
820 		return;
821 
822 	if (vd->vd_flags & VDF_SPLASH || vw->vw_flags & VWF_BUSY)
823 		return;
824 
825 	vtbuf_undirty(&vw->vw_buf, &tarea, &tmask);
826 	vt_termsize(vd, vf, &size);
827 
828 	/* Force a full redraw when the screen contents are invalid. */
829 	if (vd->vd_flags & VDF_INVALID) {
830 		tarea.tr_begin.tp_row = tarea.tr_begin.tp_col = 0;
831 		tarea.tr_end = size;
832 		tmask.vbm_row = tmask.vbm_col = VBM_DIRTY;
833 
834 		vd->vd_flags &= ~VDF_INVALID;
835 	}
836 
837 #ifndef SC_NO_CUTPASTE
838 	if ((vw->vw_flags & VWF_MOUSE_HIDE) == 0) {
839 		/* Mark last mouse position as dirty to erase. */
840 		vtbuf_mouse_cursor_position(&vw->vw_buf, vd->vd_mdirtyx,
841 		    vd->vd_mdirtyy);
842 	}
843 #endif
844 
845 	for (row = tarea.tr_begin.tp_row; row < tarea.tr_end.tp_row; row++) {
846 		if (!VTBUF_DIRTYROW(&tmask, row))
847 			continue;
848 		r = VTBUF_GET_ROW(&vw->vw_buf, row);
849 		for (col = tarea.tr_begin.tp_col;
850 		    col < tarea.tr_end.tp_col; col++) {
851 			if (!VTBUF_DIRTYCOL(&tmask, col))
852 				continue;
853 
854 			vt_bitblt_char(vd, vf, r[col],
855 			    VTBUF_ISCURSOR(&vw->vw_buf, row, col), row, col);
856 		}
857 	}
858 
859 #ifndef SC_NO_CUTPASTE
860 	/* Mouse disabled. */
861 	if (vw->vw_flags & VWF_MOUSE_HIDE)
862 		return;
863 
864 	/* No mouse for DDB. */
865 	if (kdb_active || panicstr != NULL)
866 		return;
867 
868 	if ((vd->vd_flags & (VDF_MOUSECURSOR|VDF_TEXTMODE)) ==
869 	    VDF_MOUSECURSOR) {
870 		m = &vt_default_mouse_pointer;
871 		bpl = (m->w + 7) >> 3; /* Bytes per source line. */
872 		w = m->w;
873 		h = m->h;
874 
875 		if ((vd->vd_mx + m->w) > (size.tp_col * vf->vf_width))
876 			w = (size.tp_col * vf->vf_width) - vd->vd_mx - 1;
877 		if ((vd->vd_my + m->h) > (size.tp_row * vf->vf_height))
878 			h = (size.tp_row * vf->vf_height) - vd->vd_my - 1;
879 
880 		vd->vd_driver->vd_maskbitbltchr(vd, m->map, m->mask, bpl,
881 		    vd->vd_offset.tp_row + vd->vd_my,
882 		    vd->vd_offset.tp_col + vd->vd_mx,
883 		    w, h, TC_WHITE, TC_BLACK);
884 		/* Save point of last mouse cursor to erase it later. */
885 		vd->vd_mdirtyx = vd->vd_mx / vf->vf_width;
886 		vd->vd_mdirtyy = vd->vd_my / vf->vf_height;
887 	}
888 #endif
889 }
890 
891 static void
892 vt_timer(void *arg)
893 {
894 	struct vt_device *vd;
895 
896 	vd = arg;
897 	/* Update screen if required. */
898 	vt_flush(vd);
899 
900 	/* Schedule for next update. */
901 	callout_schedule(&vd->vd_timer, hz / VT_TIMERFREQ);
902 }
903 
904 static void
905 vtterm_done(struct terminal *tm)
906 {
907 	struct vt_window *vw = tm->tm_softc;
908 	struct vt_device *vd = vw->vw_device;
909 
910 	if (kdb_active || panicstr != NULL) {
911 		/* Switch to the debugger. */
912 		if (vd->vd_curwindow != vw) {
913 			vd->vd_curwindow = vw;
914 			vd->vd_flags |= VDF_INVALID;
915 			if (vd->vd_driver->vd_postswitch)
916 				vd->vd_driver->vd_postswitch(vd);
917 		}
918 		vd->vd_flags &= ~VDF_SPLASH;
919 		vt_flush(vd);
920 	} else if (!(vd->vd_flags & VDF_ASYNC)) {
921 		vt_flush(vd);
922 	}
923 }
924 
925 #ifdef DEV_SPLASH
926 static void
927 vtterm_splash(struct vt_device *vd)
928 {
929 	vt_axis_t top, left;
930 
931 	/* Display a nice boot splash. */
932 	if (!(vd->vd_flags & VDF_TEXTMODE) && (boothowto & RB_MUTE)) {
933 
934 		top = (vd->vd_height - vt_logo_height) / 2;
935 		left = (vd->vd_width - vt_logo_width) / 2;
936 		switch (vt_logo_depth) {
937 		case 1:
938 			/* XXX: Unhardcode colors! */
939 			vd->vd_driver->vd_bitbltchr(vd, vt_logo_image, NULL, 0,
940 			    top, left, vt_logo_width, vt_logo_height, 0xf, 0x0);
941 		}
942 		vd->vd_flags |= VDF_SPLASH;
943 	}
944 }
945 #endif
946 
947 
948 static void
949 vtterm_cnprobe(struct terminal *tm, struct consdev *cp)
950 {
951 	struct vt_driver *vtd, **vtdlist, *vtdbest = NULL;
952 	struct vt_window *vw = tm->tm_softc;
953 	struct vt_device *vd = vw->vw_device;
954 	struct winsize wsz;
955 
956 	if (vd->vd_flags & VDF_INITIALIZED)
957 		/* Initialization already done. */
958 		return;
959 
960 	SET_FOREACH(vtdlist, vt_drv_set) {
961 		vtd = *vtdlist;
962 		if (vtd->vd_probe == NULL)
963 			continue;
964 		if (vtd->vd_probe(vd) == CN_DEAD)
965 			continue;
966 		if ((vtdbest == NULL) ||
967 		    (vtd->vd_priority > vtdbest->vd_priority))
968 			vtdbest = vtd;
969 	}
970 	if (vtdbest == NULL) {
971 		cp->cn_pri = CN_DEAD;
972 		vd->vd_flags |= VDF_DEAD;
973 		return;
974 	}
975 
976 	vd->vd_driver = vtdbest;
977 
978 	cp->cn_pri = vd->vd_driver->vd_init(vd);
979 	if (cp->cn_pri == CN_DEAD) {
980 		vd->vd_flags |= VDF_DEAD;
981 		return;
982 	}
983 
984 	/* Initialize any early-boot keyboard drivers */
985 	kbd_configure(KB_CONF_PROBE_ONLY);
986 
987 	vd->vd_unit = atomic_fetchadd_int(&vt_unit, 1);
988 	vd->vd_windows[VT_CONSWINDOW] = vw;
989 	sprintf(cp->cn_name, "ttyv%r", VT_UNIT(vw));
990 
991 	if (!(vd->vd_flags & VDF_TEXTMODE))
992 		vw->vw_font = vtfont_ref(&vt_font_default);
993 
994 	vtbuf_init_early(&vw->vw_buf);
995 	vt_winsize(vd, vw->vw_font, &wsz);
996 	terminal_set_winsize(tm, &wsz);
997 
998 #ifdef DEV_SPLASH
999 	vtterm_splash(vd);
1000 #endif
1001 
1002 	vd->vd_flags |= VDF_INITIALIZED;
1003 	main_vd = vd;
1004 }
1005 
1006 static int
1007 vtterm_cngetc(struct terminal *tm)
1008 {
1009 	struct vt_window *vw = tm->tm_softc;
1010 	struct vt_device *vd = vw->vw_device;
1011 	keyboard_t *kbd;
1012 	int state;
1013 	u_int c;
1014 
1015 	if (vw->vw_kbdsq && *vw->vw_kbdsq)
1016 		return (*vw->vw_kbdsq++);
1017 
1018 	state = 0;
1019 	/* Make sure the splash screen is not there. */
1020 	if (vd->vd_flags & VDF_SPLASH) {
1021 		/* Remove splash */
1022 		vd->vd_flags &= ~VDF_SPLASH;
1023 		/* Mark screen as invalid to force update */
1024 		vd->vd_flags |= VDF_INVALID;
1025 		vt_flush(vd);
1026 	}
1027 
1028 	/* Stripped down keyboard handler. */
1029 	kbd = kbd_get_keyboard(vd->vd_keyboard);
1030 	if (kbd == NULL)
1031 		return (-1);
1032 
1033 	/* Force keyboard input mode to K_XLATE */
1034 	c = K_XLATE;
1035 	kbdd_ioctl(kbd, KDSKBMODE, (void *)&c);
1036 
1037 	/* Switch the keyboard to polling to make it work here. */
1038 	kbdd_poll(kbd, TRUE);
1039 	c = kbdd_read_char(kbd, 0);
1040 	kbdd_poll(kbd, FALSE);
1041 	if (c & RELKEY)
1042 		return (-1);
1043 
1044 	if (vw->vw_flags & VWF_SCROLL) {
1045 		vt_scrollmode_kbdevent(vw, c, 1/* Console mode */);
1046 		vt_flush(vd);
1047 		return (-1);
1048 	}
1049 
1050 	/* Stripped down handling of vt_kbdevent(), without locking, etc. */
1051 	if (c & SPCLKEY) {
1052 		switch (c) {
1053 		case SPCLKEY | SLK:
1054 			kbdd_ioctl(kbd, KDGKBSTATE, (caddr_t)&state);
1055 			if (state & SLKED) {
1056 				/* Turn scrolling on. */
1057 				vw->vw_flags |= VWF_SCROLL;
1058 				VTBUF_SLCK_ENABLE(&vw->vw_buf);
1059 			} else {
1060 				/* Turn scrolling off. */
1061 				vt_scroll(vw, 0, VHS_END);
1062 				vw->vw_flags &= ~VWF_SCROLL;
1063 				VTBUF_SLCK_DISABLE(&vw->vw_buf);
1064 			}
1065 			break;
1066 		/* XXX: KDB can handle history. */
1067 		case SPCLKEY | FKEY | F(50): /* Arrow up. */
1068 			vw->vw_kbdsq = "\x1b[A";
1069 			break;
1070 		case SPCLKEY | FKEY | F(58): /* Arrow down. */
1071 			vw->vw_kbdsq = "\x1b[B";
1072 			break;
1073 		case SPCLKEY | FKEY | F(55): /* Arrow right. */
1074 			vw->vw_kbdsq = "\x1b[C";
1075 			break;
1076 		case SPCLKEY | FKEY | F(53): /* Arrow left. */
1077 			vw->vw_kbdsq = "\x1b[D";
1078 			break;
1079 		}
1080 
1081 		/* Force refresh to make scrollback work. */
1082 		vt_flush(vd);
1083 	} else if (KEYFLAGS(c) == 0) {
1084 		return (KEYCHAR(c));
1085 	}
1086 
1087 	if (vw->vw_kbdsq && *vw->vw_kbdsq)
1088 		return (*vw->vw_kbdsq++);
1089 
1090 	return (-1);
1091 }
1092 
1093 static void
1094 vtterm_opened(struct terminal *tm, int opened)
1095 {
1096 	struct vt_window *vw = tm->tm_softc;
1097 	struct vt_device *vd = vw->vw_device;
1098 
1099 	VT_LOCK(vd);
1100 	vd->vd_flags &= ~VDF_SPLASH;
1101 	if (opened)
1102 		vw->vw_flags |= VWF_OPENED;
1103 	else {
1104 		vw->vw_flags &= ~VWF_OPENED;
1105 		/* TODO: finish ACQ/REL */
1106 	}
1107 	VT_UNLOCK(vd);
1108 }
1109 
1110 static int
1111 vt_change_font(struct vt_window *vw, struct vt_font *vf)
1112 {
1113 	struct vt_device *vd = vw->vw_device;
1114 	struct terminal *tm = vw->vw_terminal;
1115 	term_pos_t size;
1116 	struct winsize wsz;
1117 
1118 	/*
1119 	 * Changing fonts.
1120 	 *
1121 	 * Changing fonts is a little tricky.  We must prevent
1122 	 * simultaneous access to the device, so we must stop
1123 	 * the display timer and the terminal from accessing.
1124 	 * We need to switch fonts and grow our screen buffer.
1125 	 *
1126 	 * XXX: Right now the code uses terminal_mute() to
1127 	 * prevent data from reaching the console driver while
1128 	 * resizing the screen buffer.  This isn't elegant...
1129 	 */
1130 
1131 	VT_LOCK(vd);
1132 	if (vw->vw_flags & VWF_BUSY) {
1133 		/* Another process is changing the font. */
1134 		VT_UNLOCK(vd);
1135 		return (EBUSY);
1136 	}
1137 	if (vw->vw_font == NULL) {
1138 		/* Our device doesn't need fonts. */
1139 		VT_UNLOCK(vd);
1140 		return (ENOTTY);
1141 	}
1142 	vw->vw_flags |= VWF_BUSY;
1143 	VT_UNLOCK(vd);
1144 
1145 	vt_termsize(vd, vf, &size);
1146 	vt_winsize(vd, vf, &wsz);
1147 	/* Save offset to font aligned area. */
1148 	vd->vd_offset.tp_col = (vd->vd_width % vf->vf_width) / 2;
1149 	vd->vd_offset.tp_row = (vd->vd_height % vf->vf_height) / 2;
1150 
1151 	/* Grow the screen buffer and terminal. */
1152 	terminal_mute(tm, 1);
1153 	vtbuf_grow(&vw->vw_buf, &size, vw->vw_buf.vb_history_size);
1154 	terminal_set_winsize_blank(tm, &wsz, 0);
1155 	terminal_mute(tm, 0);
1156 
1157 	/* Actually apply the font to the current window. */
1158 	VT_LOCK(vd);
1159 	vtfont_unref(vw->vw_font);
1160 	vw->vw_font = vtfont_ref(vf);
1161 
1162 	/* Force a full redraw the next timer tick. */
1163 	if (vd->vd_curwindow == vw)
1164 		vd->vd_flags |= VDF_INVALID;
1165 	vw->vw_flags &= ~VWF_BUSY;
1166 	VT_UNLOCK(vd);
1167 	return (0);
1168 }
1169 
1170 static int
1171 vt_set_border(struct vt_window *vw, struct vt_font *vf, term_color_t c)
1172 {
1173 	struct vt_device *vd = vw->vw_device;
1174 	int l, r, t, b, w, h;
1175 
1176 	if (vd->vd_driver->vd_drawrect == NULL)
1177 		return (ENOTSUP);
1178 
1179 	w = vd->vd_width - 1;
1180 	h = vd->vd_height - 1;
1181 	l = vd->vd_offset.tp_col - 1;
1182 	r = w - l;
1183 	t = vd->vd_offset.tp_row - 1;
1184 	b = h - t;
1185 
1186 	vd->vd_driver->vd_drawrect(vd, 0, 0, w, t, 1, c); /* Top bar. */
1187 	vd->vd_driver->vd_drawrect(vd, 0, t, l, b, 1, c); /* Left bar. */
1188 	vd->vd_driver->vd_drawrect(vd, r, t, w, b, 1, c); /* Right bar. */
1189 	vd->vd_driver->vd_drawrect(vd, 0, b, w, h, 1, c); /* Bottom bar. */
1190 
1191 	return (0);
1192 }
1193 
1194 static int
1195 vt_proc_alive(struct vt_window *vw)
1196 {
1197 	struct proc *p;
1198 
1199 	if (vw->vw_smode.mode != VT_PROCESS)
1200 		return (FALSE);
1201 
1202 	if (vw->vw_proc) {
1203 		if ((p = pfind(vw->vw_pid)) != NULL)
1204 			PROC_UNLOCK(p);
1205 		if (vw->vw_proc == p)
1206 			return (TRUE);
1207 		vw->vw_proc = NULL;
1208 		vw->vw_smode.mode = VT_AUTO;
1209 		DPRINTF(1, "vt controlling process %d died\n", vw->vw_pid);
1210 		vw->vw_pid = 0;
1211 	}
1212 	return (FALSE);
1213 }
1214 
1215 static int
1216 signal_vt_rel(struct vt_window *vw)
1217 {
1218 
1219 	if (vw->vw_smode.mode != VT_PROCESS)
1220 		return (FALSE);
1221 	if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) {
1222 		vw->vw_proc = NULL;
1223 		vw->vw_pid = 0;
1224 		return (TRUE);
1225 	}
1226 	vw->vw_flags |= VWF_SWWAIT_REL;
1227 	PROC_LOCK(vw->vw_proc);
1228 	kern_psignal(vw->vw_proc, vw->vw_smode.relsig);
1229 	PROC_UNLOCK(vw->vw_proc);
1230 	DPRINTF(1, "sending relsig to %d\n", vw->vw_pid);
1231 	return (TRUE);
1232 }
1233 
1234 static int
1235 signal_vt_acq(struct vt_window *vw)
1236 {
1237 
1238 	if (vw->vw_smode.mode != VT_PROCESS)
1239 		return (FALSE);
1240 	if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
1241 		cnavailable(vw->vw_terminal->consdev, FALSE);
1242 	if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) {
1243 		vw->vw_proc = NULL;
1244 		vw->vw_pid = 0;
1245 		return (TRUE);
1246 	}
1247 	vw->vw_flags |= VWF_SWWAIT_ACQ;
1248 	PROC_LOCK(vw->vw_proc);
1249 	kern_psignal(vw->vw_proc, vw->vw_smode.acqsig);
1250 	PROC_UNLOCK(vw->vw_proc);
1251 	DPRINTF(1, "sending acqsig to %d\n", vw->vw_pid);
1252 	return (TRUE);
1253 }
1254 
1255 static int
1256 finish_vt_rel(struct vt_window *vw, int release, int *s)
1257 {
1258 
1259 	if (vw->vw_flags & VWF_SWWAIT_REL) {
1260 		vw->vw_flags &= ~VWF_SWWAIT_REL;
1261 		if (release) {
1262 			callout_drain(&vw->vw_proc_dead_timer);
1263 			vt_late_window_switch(vw->vw_switch_to);
1264 		}
1265 		return (0);
1266 	}
1267 	return (EINVAL);
1268 }
1269 
1270 static int
1271 finish_vt_acq(struct vt_window *vw)
1272 {
1273 
1274 	if (vw->vw_flags & VWF_SWWAIT_ACQ) {
1275 		vw->vw_flags &= ~VWF_SWWAIT_ACQ;
1276 		return (0);
1277 	}
1278 	return (EINVAL);
1279 }
1280 
1281 #ifndef SC_NO_CUTPASTE
1282 static void
1283 vt_mouse_terminput_button(struct vt_device *vd, int button)
1284 {
1285 	struct vt_window *vw;
1286 	struct vt_font *vf;
1287 	char mouseb[6] = "\x1B[M";
1288 	int i, x, y;
1289 
1290 	vw = vd->vd_curwindow;
1291 	vf = vw->vw_font;
1292 
1293 	/* Translate to char position. */
1294 	x = vd->vd_mx / vf->vf_width;
1295 	y = vd->vd_my / vf->vf_height;
1296 	/* Avoid overflow. */
1297 	x = MIN(x, 255 - '!');
1298 	y = MIN(y, 255 - '!');
1299 
1300 	mouseb[3] = ' ' + button;
1301 	mouseb[4] = '!' + x;
1302 	mouseb[5] = '!' + y;
1303 
1304 	for (i = 0; i < sizeof(mouseb); i++ )
1305 		terminal_input_char(vw->vw_terminal, mouseb[i]);
1306 }
1307 
1308 static void
1309 vt_mouse_terminput(struct vt_device *vd, int type, int x, int y, int event,
1310     int cnt)
1311 {
1312 
1313 	switch (type) {
1314 	case MOUSE_BUTTON_EVENT:
1315 		if (cnt > 0) {
1316 			/* Mouse button pressed. */
1317 			if (event & MOUSE_BUTTON1DOWN)
1318 				vt_mouse_terminput_button(vd, 0);
1319 			if (event & MOUSE_BUTTON2DOWN)
1320 				vt_mouse_terminput_button(vd, 1);
1321 			if (event & MOUSE_BUTTON3DOWN)
1322 				vt_mouse_terminput_button(vd, 2);
1323 		} else {
1324 			/* Mouse button released. */
1325 			vt_mouse_terminput_button(vd, 3);
1326 		}
1327 		break;
1328 #ifdef notyet
1329 	case MOUSE_MOTION_EVENT:
1330 		if (mouse->u.data.z < 0) {
1331 			/* Scroll up. */
1332 			sc_mouse_input_button(vd, 64);
1333 		} else if (mouse->u.data.z > 0) {
1334 			/* Scroll down. */
1335 			sc_mouse_input_button(vd, 65);
1336 		}
1337 		break;
1338 #endif
1339 	}
1340 }
1341 
1342 void
1343 vt_mouse_event(int type, int x, int y, int event, int cnt, int mlevel)
1344 {
1345 	struct vt_device *vd;
1346 	struct vt_window *vw;
1347 	struct vt_font *vf;
1348 	term_pos_t size;
1349 	term_char_t *buf;
1350 	int i, len, mark;
1351 
1352 	vd = main_vd;
1353 	vw = vd->vd_curwindow;
1354 	vf = vw->vw_font;
1355 	mark = 0;
1356 
1357 	if (vw->vw_flags & VWF_MOUSE_HIDE)
1358 		return; /* Mouse disabled. */
1359 
1360 	if (vf == NULL)	/* Text mode. */
1361 		return;
1362 
1363 	/*
1364 	 * TODO: add flag about pointer position changed, to not redraw chars
1365 	 * under mouse pointer when nothing changed.
1366 	 */
1367 
1368 	if (vw->vw_mouse_level > 0)
1369 		vt_mouse_terminput(vd, type, x, y, event, cnt);
1370 
1371 	switch (type) {
1372 	case MOUSE_ACTION:
1373 	case MOUSE_MOTION_EVENT:
1374 		/* Movement */
1375 		x += vd->vd_mx;
1376 		y += vd->vd_my;
1377 
1378 		vt_termsize(vd, vf, &size);
1379 
1380 		/* Apply limits. */
1381 		x = MAX(x, 0);
1382 		y = MAX(y, 0);
1383 		x = MIN(x, (size.tp_col * vf->vf_width) - 1);
1384 		y = MIN(y, (size.tp_row * vf->vf_height) - 1);
1385 
1386 		vd->vd_mx = x;
1387 		vd->vd_my = y;
1388 		if ((vd->vd_mstate & MOUSE_BUTTON1DOWN) &&
1389 		    (vtbuf_set_mark(&vw->vw_buf, VTB_MARK_MOVE,
1390 			vd->vd_mx / vf->vf_width,
1391 			vd->vd_my / vf->vf_height) == 1)) {
1392 
1393 			/*
1394 			 * We have something marked to copy, so update pointer
1395 			 * to window with selection.
1396 			 */
1397 			vd->vd_markedwin = vw;
1398 		}
1399 		return; /* Done */
1400 	case MOUSE_BUTTON_EVENT:
1401 		/* Buttons */
1402 		break;
1403 	default:
1404 		return; /* Done */
1405 	}
1406 
1407 	switch (event) {
1408 	case MOUSE_BUTTON1DOWN:
1409 		switch (cnt % 4) {
1410 		case 0:	/* up */
1411 			mark = VTB_MARK_END;
1412 			break;
1413 		case 1: /* single click: start cut operation */
1414 			mark = VTB_MARK_START;
1415 			break;
1416 		case 2:	/* double click: cut a word */
1417 			mark = VTB_MARK_WORD;
1418 			break;
1419 		case 3:	/* triple click: cut a line */
1420 			mark = VTB_MARK_ROW;
1421 			break;
1422 		}
1423 		break;
1424 	case VT_MOUSE_PASTEBUTTON:
1425 		switch (cnt) {
1426 		case 0:	/* up */
1427 			break;
1428 		default:
1429 			if (vd->vd_markedwin == NULL)
1430 				return;
1431 			/* Get current selecton size in bytes. */
1432 			len = vtbuf_get_marked_len(&vd->vd_markedwin->vw_buf);
1433 			if (len <= 0)
1434 				return;
1435 
1436 			buf = malloc(len, M_VT, M_WAITOK | M_ZERO);
1437 			/* Request cupy/paste buffer data, no more than `len' */
1438 			vtbuf_extract_marked(&vd->vd_markedwin->vw_buf, buf,
1439 			    len);
1440 
1441 			len /= sizeof(term_char_t);
1442 			for (i = 0; i < len; i++ ) {
1443 				if (buf[i] == '\0')
1444 					continue;
1445 				terminal_input_char(vw->vw_terminal, buf[i]);
1446 			}
1447 
1448 			/* Done, so cleanup. */
1449 			free(buf, M_VT);
1450 			break;
1451 		}
1452 		return; /* Done */
1453 	case VT_MOUSE_EXTENDBUTTON:
1454 		switch (cnt) {
1455 		case 0:	/* up */
1456 			if (!(vd->vd_mstate & MOUSE_BUTTON1DOWN))
1457 				mark = VTB_MARK_EXTEND;
1458 			else
1459 				mark = 0;
1460 			break;
1461 		default:
1462 			mark = VTB_MARK_EXTEND;
1463 			break;
1464 		}
1465 		break;
1466 	default:
1467 		return; /* Done */
1468 	}
1469 
1470 	/* Save buttons state. */
1471 	if (cnt > 0)
1472 		vd->vd_mstate |= event;
1473 	else
1474 		vd->vd_mstate &= ~event;
1475 
1476 	if (vtbuf_set_mark(&vw->vw_buf, mark, vd->vd_mx / vf->vf_width,
1477 	    vd->vd_my / vf->vf_height) == 1) {
1478 		/*
1479 		 * We have something marked to copy, so update pointer to
1480 		 * window with selection.
1481 		 */
1482 		vd->vd_markedwin = vw;
1483 	}
1484 }
1485 
1486 void
1487 vt_mouse_state(int show)
1488 {
1489 	struct vt_device *vd;
1490 	struct vt_window *vw;
1491 
1492 	vd = main_vd;
1493 	vw = vd->vd_curwindow;
1494 
1495 	switch (show) {
1496 	case VT_MOUSE_HIDE:
1497 		vw->vw_flags |= VWF_MOUSE_HIDE;
1498 		break;
1499 	case VT_MOUSE_SHOW:
1500 		vw->vw_flags &= ~VWF_MOUSE_HIDE;
1501 		break;
1502 	}
1503 }
1504 #endif
1505 
1506 static int
1507 vtterm_mmap(struct terminal *tm, vm_ooffset_t offset, vm_paddr_t * paddr,
1508     int nprot, vm_memattr_t *memattr)
1509 {
1510 	struct vt_window *vw = tm->tm_softc;
1511 	struct vt_device *vd = vw->vw_device;
1512 
1513 	if (vd->vd_driver->vd_fb_mmap)
1514 		return (vd->vd_driver->vd_fb_mmap(vd, offset, paddr, nprot,
1515 		    memattr));
1516 
1517 	return (ENXIO);
1518 }
1519 
1520 static int
1521 vtterm_ioctl(struct terminal *tm, u_long cmd, caddr_t data,
1522     struct thread *td)
1523 {
1524 	struct vt_window *vw = tm->tm_softc;
1525 	struct vt_device *vd = vw->vw_device;
1526 	keyboard_t *kbd;
1527 	int error, i, s;
1528 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
1529     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
1530 	int ival;
1531 
1532 	switch (cmd) {
1533 	case _IO('v', 4):
1534 		cmd = VT_RELDISP;
1535 		break;
1536 	case _IO('v', 5):
1537 		cmd = VT_ACTIVATE;
1538 		break;
1539 	case _IO('v', 6):
1540 		cmd = VT_WAITACTIVE;
1541 		break;
1542 	case _IO('K', 20):
1543 		cmd = KDSKBSTATE;
1544 		break;
1545 	case _IO('K', 67):
1546 		cmd = KDSETRAD;
1547 		break;
1548 	case _IO('K', 7):
1549 		cmd = KDSKBMODE;
1550 		break;
1551 	case _IO('K', 8):
1552 		cmd = KDMKTONE;
1553 		break;
1554 	case _IO('K', 63):
1555 		cmd = KIOCSOUND;
1556 		break;
1557 	case _IO('K', 66):
1558 		cmd = KDSETLED;
1559 		break;
1560 	case _IO('c', 110):
1561 		cmd = CONS_SETKBD;
1562 		break;
1563 	default:
1564 		goto skip_thunk;
1565 	}
1566 	ival = IOCPARM_IVAL(data);
1567 	data = (caddr_t)&ival;
1568 skip_thunk:
1569 #endif
1570 
1571 	switch (cmd) {
1572 	case KDSETRAD:		/* set keyboard repeat & delay rates (old) */
1573 		if (*(int *)data & ~0x7f)
1574 			return (EINVAL);
1575 	case GIO_KEYMAP:
1576 	case PIO_KEYMAP:
1577 	case GIO_DEADKEYMAP:
1578 	case PIO_DEADKEYMAP:
1579 	case GETFKEY:
1580 	case SETFKEY:
1581 	case KDGKBINFO:
1582 	case KDGKBTYPE:
1583 	case KDSKBSTATE:	/* set keyboard state (locks) */
1584 	case KDGKBSTATE:	/* get keyboard state (locks) */
1585 	case KDGETREPEAT:	/* get keyboard repeat & delay rates */
1586 	case KDSETREPEAT:	/* set keyboard repeat & delay rates (new) */
1587 	case KDSETLED:		/* set keyboard LED status */
1588 	case KDGETLED:		/* get keyboard LED status */
1589 	case KBADDKBD:		/* add/remove keyboard to/from mux */
1590 	case KBRELKBD: {
1591 		error = 0;
1592 
1593 		mtx_lock(&Giant);
1594 		kbd = kbd_get_keyboard(vd->vd_keyboard);
1595 		if (kbd != NULL)
1596 			error = kbdd_ioctl(kbd, cmd, data);
1597 		mtx_unlock(&Giant);
1598 		if (error == ENOIOCTL) {
1599 			if (cmd == KDGKBTYPE) {
1600 				/* always return something? XXX */
1601 				*(int *)data = 0;
1602 			} else {
1603 				return (ENODEV);
1604 			}
1605 		}
1606 		return (error);
1607 	}
1608 	case KDGKBMODE: {
1609 		int mode = -1;
1610 
1611 		mtx_lock(&Giant);
1612 		kbd = kbd_get_keyboard(vd->vd_keyboard);
1613 		if (kbd != NULL) {
1614 			kbdd_ioctl(kbd, KDGKBMODE, (void *)&mode);
1615 		}
1616 		mtx_unlock(&Giant);
1617 		DPRINTF(20, "mode %d, vw_kbdmode %d\n", mode, vw->vw_kbdmode);
1618 		*(int *)data = mode;
1619 		return (0);
1620 	}
1621 	case KDSKBMODE: {
1622 		int mode;
1623 
1624 		mode = *(int *)data;
1625 		switch (mode) {
1626 		case K_XLATE:
1627 		case K_RAW:
1628 		case K_CODE:
1629 			vw->vw_kbdmode = mode;
1630 			if (vw == vd->vd_curwindow) {
1631 				keyboard_t *kbd;
1632 				error = 0;
1633 
1634 				mtx_lock(&Giant);
1635 				kbd = kbd_get_keyboard(vd->vd_keyboard);
1636 				if (kbd != NULL) {
1637 					error = kbdd_ioctl(kbd, KDSKBMODE,
1638 					    (void *)&mode);
1639 				}
1640 				mtx_unlock(&Giant);
1641 			}
1642 			return (0);
1643 		default:
1644 			return (EINVAL);
1645 		}
1646 	}
1647 	case FBIOGTYPE:
1648 	case FBIO_GETWINORG:	/* get frame buffer window origin */
1649 	case FBIO_GETDISPSTART:	/* get display start address */
1650 	case FBIO_GETLINEWIDTH:	/* get scan line width in bytes */
1651 	case FBIO_BLANK:	/* blank display */
1652 		if (vd->vd_driver->vd_fb_ioctl)
1653 			return (vd->vd_driver->vd_fb_ioctl(vd, cmd, data, td));
1654 		break;
1655 	case CONS_BLANKTIME:
1656 		/* XXX */
1657 		return (0);
1658 	case CONS_GET:
1659 		/* XXX */
1660 		*(int *)data = M_CG640x480;
1661 		return (0);
1662 	case CONS_BELLTYPE: 	/* set bell type sound */
1663 		if ((*(int *)data) & CONS_QUIET_BELL)
1664 			vd->vd_flags |= VDF_QUIET_BELL;
1665 		else
1666 			vd->vd_flags &= ~VDF_QUIET_BELL;
1667 		return (0);
1668 	case CONS_GETINFO: {
1669 		vid_info_t *vi = (vid_info_t *)data;
1670 
1671 		vi->m_num = vd->vd_curwindow->vw_number + 1;
1672 		/* XXX: other fields! */
1673 		return (0);
1674 	}
1675 	case CONS_GETVERS:
1676 		*(int *)data = 0x200;
1677 		return (0);
1678 	case CONS_MODEINFO:
1679 		/* XXX */
1680 		return (0);
1681 	case CONS_MOUSECTL: {
1682 		mouse_info_t *mouse = (mouse_info_t*)data;
1683 
1684 		/*
1685 		 * This has no effect on vt(4).  We don't draw any mouse
1686 		 * cursor.  Just ignore MOUSE_HIDE and MOUSE_SHOW to
1687 		 * prevent excessive errors.  All the other commands
1688 		 * should not be applied to individual TTYs, but only to
1689 		 * consolectl.
1690 		 */
1691 		switch (mouse->operation) {
1692 		case MOUSE_HIDE:
1693 			vd->vd_flags &= ~VDF_MOUSECURSOR;
1694 			return (0);
1695 		case MOUSE_SHOW:
1696 			vd->vd_mx = vd->vd_width / 2;
1697 			vd->vd_my = vd->vd_height / 2;
1698 			vd->vd_flags |= VDF_MOUSECURSOR;
1699 			return (0);
1700 		default:
1701 			return (EINVAL);
1702 		}
1703 	}
1704 	case PIO_VFONT: {
1705 		struct vt_font *vf;
1706 
1707 		error = vtfont_load((void *)data, &vf);
1708 		if (error != 0)
1709 			return (error);
1710 
1711 		error = vt_change_font(vw, vf);
1712 		if (error == 0) {
1713 			/* XXX: replace 0 with current bg color. */
1714 			vt_set_border(vw, vf, 0);
1715 		}
1716 		vtfont_unref(vf);
1717 		return (error);
1718 	}
1719 	case GIO_SCRNMAP: {
1720 		scrmap_t *sm = (scrmap_t *)data;
1721 		int i;
1722 
1723 		/* We don't have screen maps, so return a handcrafted one. */
1724 		for (i = 0; i < 256; i++)
1725 			sm->scrmap[i] = i;
1726 		return (0);
1727 	}
1728 	case KDSETMODE:
1729 		/* XXX */
1730 		return (0);
1731 	case KDENABIO:      	/* allow io operations */
1732 		error = priv_check(td, PRIV_IO);
1733 		if (error != 0)
1734 			return (error);
1735 		error = securelevel_gt(td->td_ucred, 0);
1736 		if (error != 0)
1737 			return (error);
1738 #if defined(__i386__)
1739 		td->td_frame->tf_eflags |= PSL_IOPL;
1740 #elif defined(__amd64__)
1741 		td->td_frame->tf_rflags |= PSL_IOPL;
1742 #endif
1743 		return (0);
1744 	case KDDISABIO:     	/* disallow io operations (default) */
1745 #if defined(__i386__)
1746 		td->td_frame->tf_eflags &= ~PSL_IOPL;
1747 #elif defined(__amd64__)
1748 		td->td_frame->tf_rflags &= ~PSL_IOPL;
1749 #endif
1750 		return (0);
1751 	case KDMKTONE:      	/* sound the bell */
1752 		vtterm_beep(tm, *(u_int *)data);
1753 		return (0);
1754 	case KIOCSOUND:     	/* make tone (*data) hz */
1755 		/* TODO */
1756 		return (0);
1757 	case CONS_SETKBD: 		/* set the new keyboard */
1758 		mtx_lock(&Giant);
1759 		error = 0;
1760 		if (vd->vd_keyboard != *(int *)data) {
1761 			kbd = kbd_get_keyboard(*(int *)data);
1762 			if (kbd == NULL) {
1763 				mtx_unlock(&Giant);
1764 				return (EINVAL);
1765 			}
1766 			i = kbd_allocate(kbd->kb_name, kbd->kb_unit,
1767 			    (void *)&vd->vd_keyboard, vt_kbdevent, vd);
1768 			if (i >= 0) {
1769 				if (vd->vd_keyboard != -1) {
1770 					kbd_release(kbd,
1771 					    (void *)&vd->vd_keyboard);
1772 				}
1773 				kbd = kbd_get_keyboard(i);
1774 				vd->vd_keyboard = i;
1775 
1776 				(void)kbdd_ioctl(kbd, KDSKBMODE,
1777 				    (caddr_t)&vd->vd_curwindow->vw_kbdmode);
1778 			} else {
1779 				error = EPERM;	/* XXX */
1780 			}
1781 		}
1782 		mtx_unlock(&Giant);
1783 		return (error);
1784 	case CONS_RELKBD: 		/* release the current keyboard */
1785 		mtx_lock(&Giant);
1786 		error = 0;
1787 		if (vd->vd_keyboard != -1) {
1788 			kbd = kbd_get_keyboard(vd->vd_keyboard);
1789 			if (kbd == NULL) {
1790 				mtx_unlock(&Giant);
1791 				return (EINVAL);
1792 			}
1793 			error = kbd_release(kbd, (void *)&vd->vd_keyboard);
1794 			if (error == 0) {
1795 				vd->vd_keyboard = -1;
1796 			}
1797 		}
1798 		mtx_unlock(&Giant);
1799 		return (error);
1800 	case VT_ACTIVATE: {
1801 		int win;
1802 		win = *(int *)data - 1;
1803 		DPRINTF(5, "%s%d: VT_ACTIVATE ttyv%d ", SC_DRIVER_NAME,
1804 		    VT_UNIT(vw), win);
1805 		if ((win > VT_MAXWINDOWS) || (win < 0))
1806 			return (EINVAL);
1807 		return (vt_proc_window_switch(vd->vd_windows[win]));
1808 	}
1809 	case VT_GETACTIVE:
1810 		*(int *)data = vd->vd_curwindow->vw_number + 1;
1811 		return (0);
1812 	case VT_GETINDEX:
1813 		*(int *)data = vw->vw_number + 1;
1814 		return (0);
1815 	case VT_LOCKSWITCH:
1816 		/* TODO: Check current state, switching can be in progress. */
1817 		if ((*(int *)data) & 0x01)
1818 			vw->vw_flags |= VWF_VTYLOCK;
1819 		else
1820 			vw->vw_flags &= ~VWF_VTYLOCK;
1821 		return (0);
1822 	case VT_OPENQRY:
1823 		VT_LOCK(vd);
1824 		for (i = 0; i < VT_MAXWINDOWS; i++) {
1825 			vw = vd->vd_windows[i];
1826 			if (vw == NULL)
1827 				continue;
1828 			if (!(vw->vw_flags & VWF_OPENED)) {
1829 				*(int *)data = vw->vw_number + 1;
1830 				VT_UNLOCK(vd);
1831 				return (0);
1832 			}
1833 		}
1834 		VT_UNLOCK(vd);
1835 		return (EINVAL);
1836 	case VT_WAITACTIVE:
1837 		error = 0;
1838 
1839 		i = *(unsigned int *)data;
1840 		if (i > VT_MAXWINDOWS)
1841 			return (EINVAL);
1842 		if (i != 0)
1843 			vw = vd->vd_windows[i - 1];
1844 
1845 		VT_LOCK(vd);
1846 		while (vd->vd_curwindow != vw && error == 0)
1847 			error = cv_wait_sig(&vd->vd_winswitch, &vd->vd_lock);
1848 		VT_UNLOCK(vd);
1849 		return (error);
1850 	case VT_SETMODE: {    	/* set screen switcher mode */
1851 		struct vt_mode *mode;
1852 		struct proc *p1;
1853 
1854 		mode = (struct vt_mode *)data;
1855 		DPRINTF(5, "%s%d: VT_SETMODE ", SC_DRIVER_NAME, VT_UNIT(vw));
1856 		if (vw->vw_smode.mode == VT_PROCESS) {
1857 			p1 = pfind(vw->vw_pid);
1858 			if (vw->vw_proc == p1 && vw->vw_proc != td->td_proc) {
1859 				if (p1)
1860 					PROC_UNLOCK(p1);
1861 				DPRINTF(5, "error EPERM\n");
1862 				return (EPERM);
1863 			}
1864 			if (p1)
1865 				PROC_UNLOCK(p1);
1866 		}
1867 		if (mode->mode == VT_AUTO) {
1868 			vw->vw_smode.mode = VT_AUTO;
1869 			vw->vw_proc = NULL;
1870 			vw->vw_pid = 0;
1871 			DPRINTF(5, "VT_AUTO, ");
1872 			if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
1873 				cnavailable(vw->vw_terminal->consdev, TRUE);
1874 			/* were we in the middle of the vty switching process? */
1875 			if (finish_vt_rel(vw, TRUE, &s) == 0)
1876 				DPRINTF(5, "reset WAIT_REL, ");
1877 			if (finish_vt_acq(vw) == 0)
1878 				DPRINTF(5, "reset WAIT_ACQ, ");
1879 			return (0);
1880 		} else if (mode->mode == VT_PROCESS) {
1881 			if (!ISSIGVALID(mode->relsig) ||
1882 			    !ISSIGVALID(mode->acqsig) ||
1883 			    !ISSIGVALID(mode->frsig)) {
1884 				DPRINTF(5, "error EINVAL\n");
1885 				return (EINVAL);
1886 			}
1887 			DPRINTF(5, "VT_PROCESS %d, ", td->td_proc->p_pid);
1888 			bcopy(data, &vw->vw_smode, sizeof(struct vt_mode));
1889 			vw->vw_proc = td->td_proc;
1890 			vw->vw_pid = vw->vw_proc->p_pid;
1891 			if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
1892 				cnavailable(vw->vw_terminal->consdev, FALSE);
1893 		} else {
1894 			DPRINTF(5, "VT_SETMODE failed, unknown mode %d\n",
1895 			    mode->mode);
1896 			return (EINVAL);
1897 		}
1898 		DPRINTF(5, "\n");
1899 		return (0);
1900 	}
1901 	case VT_GETMODE:	/* get screen switcher mode */
1902 		bcopy(&vw->vw_smode, data, sizeof(struct vt_mode));
1903 		return (0);
1904 
1905 	case VT_RELDISP:	/* screen switcher ioctl */
1906 		/*
1907 		 * This must be the current vty which is in the VT_PROCESS
1908 		 * switching mode...
1909 		 */
1910 		if ((vw != vd->vd_curwindow) || (vw->vw_smode.mode !=
1911 		    VT_PROCESS)) {
1912 			return (EINVAL);
1913 		}
1914 		/* ...and this process is controlling it. */
1915 		if (vw->vw_proc != td->td_proc) {
1916 			return (EPERM);
1917 		}
1918 		error = EINVAL;
1919 		switch(*(int *)data) {
1920 		case VT_FALSE:	/* user refuses to release screen, abort */
1921 			if ((error = finish_vt_rel(vw, FALSE, &s)) == 0)
1922 				DPRINTF(5, "%s%d: VT_RELDISP: VT_FALSE\n",
1923 				    SC_DRIVER_NAME, VT_UNIT(vw));
1924 			break;
1925 		case VT_TRUE:	/* user has released screen, go on */
1926 			/* finish_vt_rel(..., TRUE, ...) should not be locked */
1927 			if (vw->vw_flags & VWF_SWWAIT_REL) {
1928 				if ((error = finish_vt_rel(vw, TRUE, &s)) == 0)
1929 					DPRINTF(5, "%s%d: VT_RELDISP: VT_TRUE\n",
1930 					    SC_DRIVER_NAME, VT_UNIT(vw));
1931 			} else {
1932 				error = EINVAL;
1933 			}
1934 			return (error);
1935 		case VT_ACKACQ:	/* acquire acknowledged, switch completed */
1936 			if ((error = finish_vt_acq(vw)) == 0)
1937 				DPRINTF(5, "%s%d: VT_RELDISP: VT_ACKACQ\n",
1938 				    SC_DRIVER_NAME, VT_UNIT(vw));
1939 			break;
1940 		default:
1941 			break;
1942 		}
1943 		return (error);
1944 	}
1945 
1946 	return (ENOIOCTL);
1947 }
1948 
1949 static struct vt_window *
1950 vt_allocate_window(struct vt_device *vd, unsigned int window)
1951 {
1952 	struct vt_window *vw;
1953 	struct terminal *tm;
1954 	term_pos_t size;
1955 	struct winsize wsz;
1956 
1957 	vw = malloc(sizeof *vw, M_VT, M_WAITOK|M_ZERO);
1958 	vw->vw_device = vd;
1959 	vw->vw_number = window;
1960 	vw->vw_kbdmode = K_XLATE;
1961 
1962 	if (!(vd->vd_flags & VDF_TEXTMODE))
1963 		vw->vw_font = vtfont_ref(&vt_font_default);
1964 
1965 	vt_termsize(vd, vw->vw_font, &size);
1966 	vt_winsize(vd, vw->vw_font, &wsz);
1967 	vtbuf_init(&vw->vw_buf, &size);
1968 
1969 	tm = vw->vw_terminal = terminal_alloc(&vt_termclass, vw);
1970 	terminal_set_winsize(tm, &wsz);
1971 	vd->vd_windows[window] = vw;
1972 	callout_init(&vw->vw_proc_dead_timer, 0);
1973 
1974 	return (vw);
1975 }
1976 
1977 void
1978 vt_upgrade(struct vt_device *vd)
1979 {
1980 	struct vt_window *vw;
1981 	unsigned int i;
1982 
1983 	/* Device didn't pass vd_init() or already upgraded. */
1984 	if (vd->vd_flags & (VDF_ASYNC|VDF_DEAD))
1985 		return;
1986 	vd->vd_flags |= VDF_ASYNC;
1987 
1988 	for (i = 0; i < VT_MAXWINDOWS; i++) {
1989 		vw = vd->vd_windows[i];
1990 		if (vw == NULL) {
1991 			/* New window. */
1992 			vw = vt_allocate_window(vd, i);
1993 		} else if (vw->vw_flags & VWF_CONSOLE) {
1994 			/* For existing console window. */
1995 			callout_init(&vw->vw_proc_dead_timer, 0);
1996 		}
1997 		if (i == VT_CONSWINDOW) {
1998 			/* Console window. */
1999 			EVENTHANDLER_REGISTER(shutdown_pre_sync,
2000 			    vt_window_switch, vw, SHUTDOWN_PRI_DEFAULT);
2001 		}
2002 		terminal_maketty(vw->vw_terminal, "v%r", VT_UNIT(vw));
2003 
2004 	}
2005 	VT_LOCK(vd);
2006 	if (vd->vd_curwindow == NULL)
2007 		vd->vd_curwindow = vd->vd_windows[VT_CONSWINDOW];
2008 
2009 	/* Attach keyboard. */
2010 	vt_allocate_keyboard(vd);
2011 	DPRINTF(20, "%s: vd_keyboard = %d\n", __func__, vd->vd_keyboard);
2012 
2013 	/* Init 25 Hz timer. */
2014 	callout_init_mtx(&vd->vd_timer, &vd->vd_lock, 0);
2015 
2016 	/* Start timer when everything ready. */
2017 	callout_reset(&vd->vd_timer, hz / VT_TIMERFREQ, vt_timer, vd);
2018 	VT_UNLOCK(vd);
2019 
2020 	/* Refill settings with new sizes. */
2021 	vt_resize(vd);
2022 
2023 }
2024 
2025 static void
2026 vt_resize(struct vt_device *vd)
2027 {
2028 	struct vt_window *vw;
2029 	int i;
2030 
2031 	for (i = 0; i < VT_MAXWINDOWS; i++) {
2032 		vw = vd->vd_windows[i];
2033 		VT_LOCK(vd);
2034 		/* Assign default font to window, if not textmode. */
2035 		if (!(vd->vd_flags & VDF_TEXTMODE) && vw->vw_font == NULL)
2036 			vw->vw_font = vtfont_ref(&vt_font_default);
2037 		VT_UNLOCK(vd);
2038 		/* Resize terminal windows */
2039 		vt_change_font(vw, vw->vw_font);
2040 	}
2041 }
2042 
2043 void
2044 vt_allocate(struct vt_driver *drv, void *softc)
2045 {
2046 	struct vt_device *vd;
2047 	struct winsize wsz;
2048 
2049 	if (main_vd == NULL) {
2050 		main_vd = malloc(sizeof *vd, M_VT, M_WAITOK|M_ZERO);
2051 		printf("VT: initialize with new VT driver \"%s\".\n",
2052 		    drv->vd_name);
2053 		mtx_init(&main_vd->vd_lock, "vtdev", NULL, MTX_DEF);
2054 		cv_init(&main_vd->vd_winswitch, "vtwswt");
2055 
2056 	} else {
2057 		/*
2058 		 * Check if have rights to replace current driver. For example:
2059 		 * it is bad idea to replace KMS driver with generic VGA one.
2060 		 */
2061 		if (drv->vd_priority <= main_vd->vd_driver->vd_priority) {
2062 			printf("VT: Driver priority %d too low. Current %d\n ",
2063 			    drv->vd_priority, main_vd->vd_driver->vd_priority);
2064 			return;
2065 		}
2066 		printf("VT: Replacing driver \"%s\" with new \"%s\".\n",
2067 		    main_vd->vd_driver->vd_name, drv->vd_name);
2068 	}
2069 	vd = main_vd;
2070 	VT_LOCK(vd);
2071 	if (drv->vd_maskbitbltchr == NULL)
2072 		drv->vd_maskbitbltchr = drv->vd_bitbltchr;
2073 
2074 	if (vd->vd_flags & VDF_ASYNC) {
2075 		/* Stop vt_flush periodic task. */
2076 		callout_drain(&vd->vd_timer);
2077 		/*
2078 		 * Mute current terminal until we done. vt_change_font (called
2079 		 * from vt_resize) will unmute it.
2080 		 */
2081 		terminal_mute(vd->vd_curwindow->vw_terminal, 1);
2082 	}
2083 
2084 	/*
2085 	 * Reset VDF_TEXTMODE flag, driver who require that flag (vt_vga) will
2086 	 * set it.
2087 	 */
2088 	vd->vd_flags &= ~VDF_TEXTMODE;
2089 
2090 	vd->vd_driver = drv;
2091 	vd->vd_softc = softc;
2092 	vd->vd_driver->vd_init(vd);
2093 	VT_UNLOCK(vd);
2094 
2095 	vt_upgrade(vd);
2096 
2097 #ifdef DEV_SPLASH
2098 	if (vd->vd_flags & VDF_SPLASH)
2099 		vtterm_splash(vd);
2100 #endif
2101 
2102 	if (vd->vd_flags & VDF_ASYNC) {
2103 		terminal_mute(vd->vd_curwindow->vw_terminal, 0);
2104 		callout_schedule(&vd->vd_timer, hz / VT_TIMERFREQ);
2105 	}
2106 
2107 	termcn_cnregister(vd->vd_windows[VT_CONSWINDOW]->vw_terminal);
2108 
2109 	/* Update console window sizes to actual. */
2110 	vt_winsize(vd, vd->vd_windows[VT_CONSWINDOW]->vw_font, &wsz);
2111 	terminal_set_winsize(vd->vd_windows[VT_CONSWINDOW]->vw_terminal, &wsz);
2112 }
2113 
2114 void
2115 vt_suspend()
2116 {
2117 
2118 	if (vt_suspendswitch == 0)
2119 		return;
2120 	/* Save current window. */
2121 	main_vd->vd_savedwindow = main_vd->vd_curwindow;
2122 	/* Ask holding process to free window and switch to console window */
2123 	vt_proc_window_switch(main_vd->vd_windows[VT_CONSWINDOW]);
2124 }
2125 
2126 void
2127 vt_resume()
2128 {
2129 
2130 	if (vt_suspendswitch == 0)
2131 		return;
2132 	/* Switch back to saved window */
2133 	if (main_vd->vd_savedwindow != NULL)
2134 		vt_proc_window_switch(main_vd->vd_savedwindow);
2135 	main_vd->vd_savedwindow = NULL;
2136 }
2137