1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2009, 2013 The FreeBSD Foundation
5 *
6 * This software was developed by Ed Schouten under sponsorship from the
7 * FreeBSD Foundation.
8 *
9 * Portions of this software were developed by Oleksandr Rybalko
10 * under sponsorship from the FreeBSD Foundation.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36
37 #include <sys/param.h>
38 #include <sys/consio.h>
39 #include <sys/devctl.h>
40 #include <sys/eventhandler.h>
41 #include <sys/fbio.h>
42 #include <sys/font.h>
43 #include <sys/kbio.h>
44 #include <sys/kdb.h>
45 #include <sys/kernel.h>
46 #include <sys/linker.h>
47 #include <sys/lock.h>
48 #include <sys/malloc.h>
49 #include <sys/mutex.h>
50 #include <sys/power.h>
51 #include <sys/priv.h>
52 #include <sys/proc.h>
53 #include <sys/random.h>
54 #include <sys/reboot.h>
55 #include <sys/sbuf.h>
56 #include <sys/systm.h>
57 #include <sys/terminal.h>
58
59 #include <dev/kbd/kbdreg.h>
60 #include <dev/vt/vt.h>
61
62 #if defined(__i386__) || defined(__amd64__)
63 #include <machine/psl.h>
64 #include <machine/frame.h>
65 #endif
66
67 static int vtterm_cngrab_noswitch(struct vt_device *, struct vt_window *);
68 static int vtterm_cnungrab_noswitch(struct vt_device *, struct vt_window *);
69
70 static tc_bell_t vtterm_bell;
71 static tc_cursor_t vtterm_cursor;
72 static tc_putchar_t vtterm_putchar;
73 static tc_fill_t vtterm_fill;
74 static tc_copy_t vtterm_copy;
75 static tc_pre_input_t vtterm_pre_input;
76 static tc_post_input_t vtterm_post_input;
77 static tc_param_t vtterm_param;
78 static tc_done_t vtterm_done;
79
80 static tc_cnprobe_t vtterm_cnprobe;
81 static tc_cngetc_t vtterm_cngetc;
82
83 static tc_cngrab_t vtterm_cngrab;
84 static tc_cnungrab_t vtterm_cnungrab;
85
86 static tc_opened_t vtterm_opened;
87 static tc_ioctl_t vtterm_ioctl;
88 static tc_mmap_t vtterm_mmap;
89
90 const struct terminal_class vt_termclass = {
91 .tc_bell = vtterm_bell,
92 .tc_cursor = vtterm_cursor,
93 .tc_putchar = vtterm_putchar,
94 .tc_fill = vtterm_fill,
95 .tc_copy = vtterm_copy,
96 .tc_pre_input = vtterm_pre_input,
97 .tc_post_input = vtterm_post_input,
98 .tc_param = vtterm_param,
99 .tc_done = vtterm_done,
100
101 .tc_cnprobe = vtterm_cnprobe,
102 .tc_cngetc = vtterm_cngetc,
103
104 .tc_cngrab = vtterm_cngrab,
105 .tc_cnungrab = vtterm_cnungrab,
106
107 .tc_opened = vtterm_opened,
108 .tc_ioctl = vtterm_ioctl,
109 .tc_mmap = vtterm_mmap,
110 };
111
112 /*
113 * Use a constant timer of 25 Hz to redraw the screen.
114 *
115 * XXX: In theory we should only fire up the timer when there is really
116 * activity. Unfortunately we cannot always start timers. We really
117 * don't want to process kernel messages synchronously, because it
118 * really slows down the system.
119 */
120 #define VT_TIMERFREQ 25
121
122 /* Bell pitch/duration. */
123 #define VT_BELLDURATION (SBT_1S / 20)
124 #define VT_BELLPITCH (1193182 / 800) /* Approx 1491Hz */
125
126 #define VT_UNIT(vw) ((vw)->vw_device->vd_unit * VT_MAXWINDOWS + \
127 (vw)->vw_number)
128
129 static SYSCTL_NODE(_kern, OID_AUTO, vt, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
130 "vt(9) parameters");
131 static VT_SYSCTL_INT(enable_altgr, 1, "Enable AltGr key (Do not assume R.Alt as Alt)");
132 static VT_SYSCTL_INT(enable_bell, 1, "Enable bell");
133 static VT_SYSCTL_INT(debug, 0, "vt(9) debug level");
134 static VT_SYSCTL_INT(deadtimer, 15, "Time to wait busy process in VT_PROCESS mode");
135 static VT_SYSCTL_INT(suspendswitch, 1, "Switch to VT0 before suspend");
136
137 /* Allow to disable some keyboard combinations. */
138 static VT_SYSCTL_INT(kbd_halt, 1, "Enable halt keyboard combination. "
139 "See kbdmap(5) to configure.");
140 static VT_SYSCTL_INT(kbd_poweroff, 1, "Enable Power Off keyboard combination. "
141 "See kbdmap(5) to configure.");
142 static VT_SYSCTL_INT(kbd_reboot, 1, "Enable reboot keyboard combination. "
143 "See kbdmap(5) to configure (typically Ctrl-Alt-Delete).");
144 static VT_SYSCTL_INT(kbd_debug, 1, "Enable key combination to enter debugger. "
145 "See kbdmap(5) to configure (typically Ctrl-Alt-Esc).");
146 static VT_SYSCTL_INT(kbd_panic, 0, "Enable request to panic. "
147 "See kbdmap(5) to configure.");
148
149 /* Used internally, not a tunable. */
150 int vt_draw_logo_cpus;
151 VT_SYSCTL_INT(splash_cpu, 0, "Show logo CPUs during boot");
152 VT_SYSCTL_INT(splash_ncpu, 0, "Override number of logos displayed "
153 "(0 = do not override)");
154 VT_SYSCTL_INT(splash_cpu_style, 2, "Draw logo style "
155 "(0 = Alternate beastie, 1 = Beastie, 2 = Orb)");
156 VT_SYSCTL_INT(splash_cpu_duration, 10, "Hide logos after (seconds)");
157
158 static unsigned int vt_unit = 0;
159 static MALLOC_DEFINE(M_VT, "vt", "vt device");
160 struct vt_device *main_vd = &vt_consdev;
161
162 /* Boot logo. */
163 extern unsigned int vt_logo_width;
164 extern unsigned int vt_logo_height;
165 extern unsigned int vt_logo_depth;
166 extern unsigned char vt_logo_image[];
167 #ifndef DEV_SPLASH
168 #define vtterm_draw_cpu_logos(...) do {} while (0)
169 const unsigned int vt_logo_sprite_height;
170 #endif
171
172 /*
173 * Console font. vt_font_loader will be filled with font data passed
174 * by loader. If there is no font passed by boot loader, we use built in
175 * default.
176 */
177 extern struct vt_font vt_font_default;
178 static struct vt_font vt_font_loader;
179 static struct vt_font *vt_font_assigned = &vt_font_default;
180
181 #ifndef SC_NO_CUTPASTE
182 extern struct vt_mouse_cursor vt_default_mouse_pointer;
183 #endif
184
185 static int signal_vt_rel(struct vt_window *);
186 static int signal_vt_acq(struct vt_window *);
187 static int finish_vt_rel(struct vt_window *, int, int *);
188 static int finish_vt_acq(struct vt_window *);
189 static int vt_window_switch(struct vt_window *);
190 static int vt_late_window_switch(struct vt_window *);
191 static int vt_proc_alive(struct vt_window *);
192 static void vt_resize(struct vt_device *);
193 static void vt_update_static(void *);
194 #ifndef SC_NO_CUTPASTE
195 static void vt_mouse_paste(void);
196 #endif
197 static void vt_suspend_handler(void *priv);
198 static void vt_resume_handler(void *priv);
199
200 SET_DECLARE(vt_drv_set, struct vt_driver);
201
202 #define _VTDEFH MAX(100, PIXEL_HEIGHT(VT_FB_MAX_HEIGHT))
203 #define _VTDEFW MAX(200, PIXEL_WIDTH(VT_FB_MAX_WIDTH))
204
205 struct terminal vt_consterm;
206 static struct vt_window vt_conswindow;
207 #ifndef SC_NO_CONSDRAWN
208 static term_char_t vt_consdrawn[PIXEL_HEIGHT(VT_FB_MAX_HEIGHT) * PIXEL_WIDTH(VT_FB_MAX_WIDTH)];
209 static term_color_t vt_consdrawnfg[PIXEL_HEIGHT(VT_FB_MAX_HEIGHT) * PIXEL_WIDTH(VT_FB_MAX_WIDTH)];
210 static term_color_t vt_consdrawnbg[PIXEL_HEIGHT(VT_FB_MAX_HEIGHT) * PIXEL_WIDTH(VT_FB_MAX_WIDTH)];
211 #endif
212 struct vt_device vt_consdev = {
213 .vd_driver = NULL,
214 .vd_softc = NULL,
215 .vd_prev_driver = NULL,
216 .vd_prev_softc = NULL,
217 .vd_flags = VDF_INVALID,
218 .vd_windows = { [VT_CONSWINDOW] = &vt_conswindow, },
219 .vd_curwindow = &vt_conswindow,
220 .vd_kbstate = 0,
221
222 #ifndef SC_NO_CUTPASTE
223 .vd_pastebuf = {
224 .vpb_buf = NULL,
225 .vpb_bufsz = 0,
226 .vpb_len = 0
227 },
228 .vd_mcursor = &vt_default_mouse_pointer,
229 .vd_mcursor_fg = TC_WHITE,
230 .vd_mcursor_bg = TC_BLACK,
231 #endif
232
233 #ifndef SC_NO_CONSDRAWN
234 .vd_drawn = vt_consdrawn,
235 .vd_drawnfg = vt_consdrawnfg,
236 .vd_drawnbg = vt_consdrawnbg,
237 #endif
238 };
239 static term_char_t vt_constextbuf[(_VTDEFW) * (VBF_DEFAULT_HISTORY_SIZE)];
240 static term_char_t *vt_constextbufrows[VBF_DEFAULT_HISTORY_SIZE];
241 static struct vt_window vt_conswindow = {
242 .vw_number = VT_CONSWINDOW,
243 .vw_flags = VWF_CONSOLE,
244 .vw_buf = {
245 .vb_buffer = &vt_constextbuf[0],
246 .vb_rows = &vt_constextbufrows[0],
247 .vb_history_size = VBF_DEFAULT_HISTORY_SIZE,
248 .vb_curroffset = 0,
249 .vb_roffset = 0,
250 .vb_flags = VBF_STATIC,
251 .vb_mark_start = {.tp_row = 0, .tp_col = 0,},
252 .vb_mark_end = {.tp_row = 0, .tp_col = 0,},
253 .vb_scr_size = {
254 .tp_row = _VTDEFH,
255 .tp_col = _VTDEFW,
256 },
257 },
258 .vw_device = &vt_consdev,
259 .vw_terminal = &vt_consterm,
260 .vw_kbdmode = K_XLATE,
261 .vw_grabbed = 0,
262 .vw_bell_pitch = VT_BELLPITCH,
263 .vw_bell_duration = VT_BELLDURATION,
264 };
265 struct terminal vt_consterm = {
266 .tm_class = &vt_termclass,
267 .tm_softc = &vt_conswindow,
268 .tm_flags = TF_CONS,
269 };
270 static struct consdev vt_consterm_consdev = {
271 .cn_ops = &termcn_cnops,
272 .cn_arg = &vt_consterm,
273 .cn_name = "ttyv0",
274 };
275
276 /* Add to set of consoles. */
277 DATA_SET(cons_set, vt_consterm_consdev);
278
279 /*
280 * Right after kmem is done to allow early drivers to use locking and allocate
281 * memory.
282 */
283 SYSINIT(vt_update_static, SI_SUB_KMEM, SI_ORDER_ANY, vt_update_static,
284 &vt_consdev);
285 /* Delay until all devices attached, to not waste time. */
286 SYSINIT(vt_early_cons, SI_SUB_INT_CONFIG_HOOKS, SI_ORDER_ANY, vt_upgrade,
287 &vt_consdev);
288
289 /* Initialize locks/mem depended members. */
290 static void
vt_update_static(void * dummy)291 vt_update_static(void *dummy)
292 {
293
294 if (!vty_enabled(VTY_VT))
295 return;
296 if (main_vd->vd_driver != NULL)
297 printf("VT(%s): %s %ux%u\n", main_vd->vd_driver->vd_name,
298 (main_vd->vd_flags & VDF_TEXTMODE) ? "text" : "resolution",
299 main_vd->vd_width, main_vd->vd_height);
300 else
301 printf("VT: init without driver.\n");
302
303 mtx_init(&main_vd->vd_lock, "vtdev", NULL, MTX_DEF);
304 cv_init(&main_vd->vd_winswitch, "vtwswt");
305 }
306
307 static void
vt_schedule_flush(struct vt_device * vd,int ms)308 vt_schedule_flush(struct vt_device *vd, int ms)
309 {
310
311 if (ms <= 0)
312 /* Default to initial value. */
313 ms = 1000 / VT_TIMERFREQ;
314
315 callout_schedule(&vd->vd_timer, hz / (1000 / ms));
316 }
317
318 void
vt_resume_flush_timer(struct vt_window * vw,int ms)319 vt_resume_flush_timer(struct vt_window *vw, int ms)
320 {
321 struct vt_device *vd = vw->vw_device;
322
323 if (vd->vd_curwindow != vw)
324 return;
325
326 if (!(vd->vd_flags & VDF_ASYNC) ||
327 !atomic_cmpset_int(&vd->vd_timer_armed, 0, 1))
328 return;
329
330 vt_schedule_flush(vd, ms);
331 }
332
333 static void
vt_suspend_flush_timer(struct vt_device * vd)334 vt_suspend_flush_timer(struct vt_device *vd)
335 {
336 /*
337 * As long as this function is called locked, callout_stop()
338 * has the same effect like callout_drain() with regard to
339 * preventing the callback function from executing.
340 */
341 VT_LOCK_ASSERT(vd, MA_OWNED);
342
343 if (!(vd->vd_flags & VDF_ASYNC) ||
344 !atomic_cmpset_int(&vd->vd_timer_armed, 1, 0))
345 return;
346
347 callout_stop(&vd->vd_timer);
348 }
349
350 static void
vt_switch_timer(void * arg)351 vt_switch_timer(void *arg)
352 {
353
354 (void)vt_late_window_switch((struct vt_window *)arg);
355 }
356
357 static int
vt_save_kbd_mode(struct vt_window * vw,keyboard_t * kbd)358 vt_save_kbd_mode(struct vt_window *vw, keyboard_t *kbd)
359 {
360 int mode, ret;
361
362 mode = 0;
363 ret = kbdd_ioctl(kbd, KDGKBMODE, (caddr_t)&mode);
364 if (ret == ENOIOCTL)
365 ret = ENODEV;
366 if (ret != 0)
367 return (ret);
368
369 vw->vw_kbdmode = mode;
370
371 return (0);
372 }
373
374 static int
vt_update_kbd_mode(struct vt_window * vw,keyboard_t * kbd)375 vt_update_kbd_mode(struct vt_window *vw, keyboard_t *kbd)
376 {
377 int ret;
378
379 ret = kbdd_ioctl(kbd, KDSKBMODE, (caddr_t)&vw->vw_kbdmode);
380 if (ret == ENOIOCTL)
381 ret = ENODEV;
382
383 return (ret);
384 }
385
386 static int
vt_save_kbd_state(struct vt_window * vw,keyboard_t * kbd)387 vt_save_kbd_state(struct vt_window *vw, keyboard_t *kbd)
388 {
389 int state, ret;
390
391 state = 0;
392 ret = kbdd_ioctl(kbd, KDGKBSTATE, (caddr_t)&state);
393 if (ret == ENOIOCTL)
394 ret = ENODEV;
395 if (ret != 0)
396 return (ret);
397
398 vw->vw_kbdstate &= ~LOCK_MASK;
399 vw->vw_kbdstate |= state & LOCK_MASK;
400
401 return (0);
402 }
403
404 static int
vt_update_kbd_state(struct vt_window * vw,keyboard_t * kbd)405 vt_update_kbd_state(struct vt_window *vw, keyboard_t *kbd)
406 {
407 int state, ret;
408
409 state = vw->vw_kbdstate & LOCK_MASK;
410 ret = kbdd_ioctl(kbd, KDSKBSTATE, (caddr_t)&state);
411 if (ret == ENOIOCTL)
412 ret = ENODEV;
413
414 return (ret);
415 }
416
417 static int
vt_save_kbd_leds(struct vt_window * vw,keyboard_t * kbd)418 vt_save_kbd_leds(struct vt_window *vw, keyboard_t *kbd)
419 {
420 int leds, ret;
421
422 leds = 0;
423 ret = kbdd_ioctl(kbd, KDGETLED, (caddr_t)&leds);
424 if (ret == ENOIOCTL)
425 ret = ENODEV;
426 if (ret != 0)
427 return (ret);
428
429 vw->vw_kbdstate &= ~LED_MASK;
430 vw->vw_kbdstate |= leds & LED_MASK;
431
432 return (0);
433 }
434
435 static int
vt_update_kbd_leds(struct vt_window * vw,keyboard_t * kbd)436 vt_update_kbd_leds(struct vt_window *vw, keyboard_t *kbd)
437 {
438 int leds, ret;
439
440 leds = vw->vw_kbdstate & LED_MASK;
441 ret = kbdd_ioctl(kbd, KDSETLED, (caddr_t)&leds);
442 if (ret == ENOIOCTL)
443 ret = ENODEV;
444
445 return (ret);
446 }
447
448 static int
vt_window_preswitch(struct vt_window * vw,struct vt_window * curvw)449 vt_window_preswitch(struct vt_window *vw, struct vt_window *curvw)
450 {
451
452 DPRINTF(40, "%s\n", __func__);
453 curvw->vw_switch_to = vw;
454 /* Set timer to allow switch in case when process hang. */
455 callout_reset(&vw->vw_proc_dead_timer, hz * vt_deadtimer,
456 vt_switch_timer, (void *)vw);
457 /* Notify process about vt switch attempt. */
458 DPRINTF(30, "%s: Notify process.\n", __func__);
459 signal_vt_rel(curvw);
460
461 return (0);
462 }
463
464 static int
vt_window_postswitch(struct vt_window * vw)465 vt_window_postswitch(struct vt_window *vw)
466 {
467
468 signal_vt_acq(vw);
469 return (0);
470 }
471
472 /* vt_late_window_switch will do VT switching for regular case. */
473 static int
vt_late_window_switch(struct vt_window * vw)474 vt_late_window_switch(struct vt_window *vw)
475 {
476 struct vt_window *curvw;
477 int ret;
478
479 callout_stop(&vw->vw_proc_dead_timer);
480
481 ret = vt_window_switch(vw);
482 if (ret != 0) {
483 /*
484 * If the switch hasn't happened, then return the VT
485 * to the current owner, if any.
486 */
487 curvw = vw->vw_device->vd_curwindow;
488 if (curvw->vw_smode.mode == VT_PROCESS)
489 (void)vt_window_postswitch(curvw);
490 return (ret);
491 }
492
493 /* Notify owner process about terminal availability. */
494 if (vw->vw_smode.mode == VT_PROCESS) {
495 ret = vt_window_postswitch(vw);
496 }
497 return (ret);
498 }
499
500 /* Switch window. */
501 static int
vt_proc_window_switch(struct vt_window * vw)502 vt_proc_window_switch(struct vt_window *vw)
503 {
504 struct vt_window *curvw;
505 struct vt_device *vd;
506 int ret;
507
508 /* Prevent switching to NULL */
509 if (vw == NULL) {
510 DPRINTF(30, "%s: Cannot switch: vw is NULL.", __func__);
511 return (EINVAL);
512 }
513 vd = vw->vw_device;
514 curvw = vd->vd_curwindow;
515
516 /* Check if virtual terminal is locked */
517 if (curvw->vw_flags & VWF_VTYLOCK)
518 return (EBUSY);
519
520 /* Check if switch already in progress */
521 if (curvw->vw_flags & VWF_SWWAIT_REL) {
522 /* Check if switching to same window */
523 if (curvw->vw_switch_to == vw) {
524 DPRINTF(30, "%s: Switch in progress to same vw.", __func__);
525 return (0); /* success */
526 }
527 DPRINTF(30, "%s: Switch in progress to different vw.", __func__);
528 return (EBUSY);
529 }
530
531 /* Avoid switching to already selected window */
532 if (vw == curvw) {
533 DPRINTF(30, "%s: Cannot switch: vw == curvw.", __func__);
534 return (0); /* success */
535 }
536
537 /*
538 * Early check for an attempt to switch to a non-functional VT.
539 * The same check is done in vt_window_switch(), but it's better
540 * to fail as early as possible to avoid needless pre-switch
541 * actions.
542 */
543 VT_LOCK(vd);
544 if ((vw->vw_flags & (VWF_OPENED|VWF_CONSOLE)) == 0) {
545 VT_UNLOCK(vd);
546 return (EINVAL);
547 }
548 VT_UNLOCK(vd);
549
550 /* Ask current process permission to switch away. */
551 if (curvw->vw_smode.mode == VT_PROCESS) {
552 DPRINTF(30, "%s: VT_PROCESS ", __func__);
553 if (vt_proc_alive(curvw) == FALSE) {
554 DPRINTF(30, "Dead. Cleaning.");
555 /* Dead */
556 } else {
557 DPRINTF(30, "%s: Signaling process.\n", __func__);
558 /* Alive, try to ask him. */
559 ret = vt_window_preswitch(vw, curvw);
560 /* Wait for process answer or timeout. */
561 return (ret);
562 }
563 DPRINTF(30, "\n");
564 }
565
566 ret = vt_late_window_switch(vw);
567 return (ret);
568 }
569
570 /* Switch window ignoring process locking. */
571 static int
vt_window_switch(struct vt_window * vw)572 vt_window_switch(struct vt_window *vw)
573 {
574 struct vt_device *vd = vw->vw_device;
575 struct vt_window *curvw = vd->vd_curwindow;
576 keyboard_t *kbd;
577
578 if (kdb_active) {
579 /*
580 * When grabbing the console for the debugger, avoid
581 * locks as that can result in deadlock. While this
582 * could use try locks, that wouldn't really make a
583 * difference as there are sufficient barriers in
584 * debugger entry/exit to be equivalent to
585 * successfully try-locking here.
586 */
587 if (curvw == vw)
588 return (0);
589 if (!(vw->vw_flags & (VWF_OPENED|VWF_CONSOLE)))
590 return (EINVAL);
591
592 vd->vd_curwindow = vw;
593 vd->vd_flags |= VDF_INVALID;
594 if (vd->vd_driver->vd_postswitch)
595 vd->vd_driver->vd_postswitch(vd);
596 return (0);
597 }
598
599 VT_LOCK(vd);
600 if (curvw == vw) {
601 /*
602 * Nothing to do, except ensure the driver has the opportunity to
603 * switch to console mode when panicking, making sure the panic
604 * is readable (even when a GUI was using ttyv0).
605 */
606 if ((kdb_active || panicstr) && vd->vd_driver->vd_postswitch)
607 vd->vd_driver->vd_postswitch(vd);
608 VT_UNLOCK(vd);
609 return (0);
610 }
611 if (!(vw->vw_flags & (VWF_OPENED|VWF_CONSOLE))) {
612 VT_UNLOCK(vd);
613 return (EINVAL);
614 }
615
616 vt_suspend_flush_timer(vd);
617
618 vd->vd_curwindow = vw;
619 vd->vd_flags |= VDF_INVALID;
620 cv_broadcast(&vd->vd_winswitch);
621 VT_UNLOCK(vd);
622
623 if (vd->vd_driver->vd_postswitch)
624 vd->vd_driver->vd_postswitch(vd);
625
626 vt_resume_flush_timer(vw, 0);
627
628 /* Restore per-window keyboard mode. */
629 mtx_lock(&Giant);
630 if ((kbd = vd->vd_keyboard) != NULL) {
631 if (curvw->vw_kbdmode == K_XLATE)
632 vt_save_kbd_state(curvw, kbd);
633
634 vt_update_kbd_mode(vw, kbd);
635 vt_update_kbd_state(vw, kbd);
636 }
637 mtx_unlock(&Giant);
638 DPRINTF(10, "%s(ttyv%d) done\n", __func__, vw->vw_number);
639
640 return (0);
641 }
642
643 void
vt_termsize(struct vt_device * vd,struct vt_font * vf,term_pos_t * size)644 vt_termsize(struct vt_device *vd, struct vt_font *vf, term_pos_t *size)
645 {
646
647 size->tp_row = vd->vd_height;
648 if (vt_draw_logo_cpus)
649 size->tp_row -= vt_logo_sprite_height;
650 size->tp_col = vd->vd_width;
651 if (vf != NULL) {
652 size->tp_row = MIN(size->tp_row / vf->vf_height,
653 PIXEL_HEIGHT(VT_FB_MAX_HEIGHT));
654 size->tp_col = MIN(size->tp_col / vf->vf_width,
655 PIXEL_WIDTH(VT_FB_MAX_WIDTH));
656 }
657 }
658
659 static inline void
vt_termrect(struct vt_device * vd,struct vt_font * vf,term_rect_t * rect)660 vt_termrect(struct vt_device *vd, struct vt_font *vf, term_rect_t *rect)
661 {
662
663 rect->tr_begin.tp_row = rect->tr_begin.tp_col = 0;
664 if (vt_draw_logo_cpus)
665 rect->tr_begin.tp_row = vt_logo_sprite_height;
666
667 rect->tr_end.tp_row = vd->vd_height;
668 rect->tr_end.tp_col = vd->vd_width;
669
670 if (vf != NULL) {
671 rect->tr_begin.tp_row =
672 howmany(rect->tr_begin.tp_row, vf->vf_height);
673
674 rect->tr_end.tp_row = MIN(rect->tr_end.tp_row / vf->vf_height,
675 PIXEL_HEIGHT(VT_FB_MAX_HEIGHT));
676 rect->tr_end.tp_col = MIN(rect->tr_end.tp_col / vf->vf_width,
677 PIXEL_WIDTH(VT_FB_MAX_WIDTH));
678 }
679 }
680
681 void
vt_winsize(struct vt_device * vd,struct vt_font * vf,struct winsize * size)682 vt_winsize(struct vt_device *vd, struct vt_font *vf, struct winsize *size)
683 {
684
685 size->ws_ypixel = vd->vd_height;
686 if (vt_draw_logo_cpus)
687 size->ws_ypixel -= vt_logo_sprite_height;
688 size->ws_row = size->ws_ypixel;
689 size->ws_col = size->ws_xpixel = vd->vd_width;
690 if (vf != NULL) {
691 size->ws_row = MIN(size->ws_row / vf->vf_height,
692 PIXEL_HEIGHT(VT_FB_MAX_HEIGHT));
693 size->ws_col = MIN(size->ws_col / vf->vf_width,
694 PIXEL_WIDTH(VT_FB_MAX_WIDTH));
695 }
696 }
697
698 void
vt_compute_drawable_area(struct vt_window * vw)699 vt_compute_drawable_area(struct vt_window *vw)
700 {
701 struct vt_device *vd;
702 struct vt_font *vf;
703 vt_axis_t height;
704
705 vd = vw->vw_device;
706
707 if (vw->vw_font == NULL) {
708 vw->vw_draw_area.tr_begin.tp_col = 0;
709 vw->vw_draw_area.tr_begin.tp_row = 0;
710 if (vt_draw_logo_cpus)
711 vw->vw_draw_area.tr_begin.tp_row = vt_logo_sprite_height;
712 vw->vw_draw_area.tr_end.tp_col = vd->vd_width;
713 vw->vw_draw_area.tr_end.tp_row = vd->vd_height;
714 return;
715 }
716
717 vf = vw->vw_font;
718
719 /*
720 * Compute the drawable area, so that the text is centered on
721 * the screen.
722 */
723
724 height = vd->vd_height;
725 if (vt_draw_logo_cpus)
726 height -= vt_logo_sprite_height;
727 vw->vw_draw_area.tr_begin.tp_col = (vd->vd_width % vf->vf_width) / 2;
728 vw->vw_draw_area.tr_begin.tp_row = (height % vf->vf_height) / 2;
729 if (vt_draw_logo_cpus)
730 vw->vw_draw_area.tr_begin.tp_row += vt_logo_sprite_height;
731 vw->vw_draw_area.tr_end.tp_col = vw->vw_draw_area.tr_begin.tp_col +
732 rounddown(vd->vd_width, vf->vf_width);
733 vw->vw_draw_area.tr_end.tp_row = vw->vw_draw_area.tr_begin.tp_row +
734 rounddown(height, vf->vf_height);
735 }
736
737 static void
vt_scroll(struct vt_window * vw,int offset,int whence)738 vt_scroll(struct vt_window *vw, int offset, int whence)
739 {
740 int diff;
741 term_pos_t size;
742
743 if ((vw->vw_flags & VWF_SCROLL) == 0)
744 return;
745
746 vt_termsize(vw->vw_device, vw->vw_font, &size);
747
748 diff = vthistory_seek(&vw->vw_buf, offset, whence);
749 if (diff)
750 vw->vw_device->vd_flags |= VDF_INVALID;
751 vt_resume_flush_timer(vw, 0);
752 }
753
754 static int
vt_machine_kbdevent(struct vt_device * vd,int c)755 vt_machine_kbdevent(struct vt_device *vd, int c)
756 {
757
758 switch (c) {
759 case SPCLKEY | DBG: /* kbdmap(5) keyword `debug`. */
760 if (vt_kbd_debug) {
761 kdb_enter(KDB_WHY_BREAK, "manual escape to debugger");
762 #if VT_ALT_TO_ESC_HACK
763 /*
764 * There's an unfortunate conflict between SPCLKEY|DBG
765 * and VT_ALT_TO_ESC_HACK. Just assume they didn't mean
766 * it if we got to here.
767 */
768 vd->vd_kbstate &= ~ALKED;
769 #endif
770 }
771 return (1);
772 case SPCLKEY | HALT: /* kbdmap(5) keyword `halt`. */
773 if (vt_kbd_halt)
774 shutdown_nice(RB_HALT);
775 return (1);
776 case SPCLKEY | PASTE: /* kbdmap(5) keyword `paste`. */
777 #ifndef SC_NO_CUTPASTE
778 /* Insert text from cut-paste buffer. */
779 vt_mouse_paste();
780 #endif
781 break;
782 case SPCLKEY | PDWN: /* kbdmap(5) keyword `pdwn`. */
783 if (vt_kbd_poweroff)
784 shutdown_nice(RB_HALT|RB_POWEROFF);
785 return (1);
786 case SPCLKEY | PNC: /* kbdmap(5) keyword `panic`. */
787 /*
788 * Request to immediate panic if sysctl
789 * kern.vt.enable_panic_key allow it.
790 */
791 if (vt_kbd_panic)
792 panic("Forced by the panic key");
793 return (1);
794 case SPCLKEY | RBT: /* kbdmap(5) keyword `boot`. */
795 if (vt_kbd_reboot)
796 shutdown_nice(RB_AUTOBOOT);
797 return (1);
798 case SPCLKEY | SPSC: /* kbdmap(5) keyword `spsc`. */
799 /* Force activatation/deactivation of the screen saver. */
800 /* TODO */
801 return (1);
802 case SPCLKEY | STBY: /* XXX Not present in kbdcontrol parser. */
803 /* Put machine into Stand-By mode. */
804 power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
805 return (1);
806 case SPCLKEY | SUSP: /* kbdmap(5) keyword `susp`. */
807 /* Suspend machine. */
808 power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
809 return (1);
810 }
811
812 return (0);
813 }
814
815 static void
vt_scrollmode_kbdevent(struct vt_window * vw,int c,int console)816 vt_scrollmode_kbdevent(struct vt_window *vw, int c, int console)
817 {
818 struct vt_device *vd;
819 term_pos_t size;
820
821 vd = vw->vw_device;
822 /* Only special keys handled in ScrollLock mode */
823 if ((c & SPCLKEY) == 0)
824 return;
825
826 c &= ~SPCLKEY;
827
828 if (console == 0) {
829 if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) {
830 vw = vd->vd_windows[c - F_SCR];
831 vt_proc_window_switch(vw);
832 return;
833 }
834 VT_LOCK(vd);
835 }
836
837 switch (c) {
838 case SLK: {
839 /* Turn scrolling off. */
840 vt_scroll(vw, 0, VHS_END);
841 VTBUF_SLCK_DISABLE(&vw->vw_buf);
842 vw->vw_flags &= ~VWF_SCROLL;
843 break;
844 }
845 case FKEY | F(49): /* Home key. */
846 vt_scroll(vw, 0, VHS_SET);
847 break;
848 case FKEY | F(50): /* Arrow up. */
849 vt_scroll(vw, -1, VHS_CUR);
850 break;
851 case FKEY | F(51): /* Page up. */
852 vt_termsize(vd, vw->vw_font, &size);
853 vt_scroll(vw, -size.tp_row, VHS_CUR);
854 break;
855 case FKEY | F(57): /* End key. */
856 vt_scroll(vw, 0, VHS_END);
857 break;
858 case FKEY | F(58): /* Arrow down. */
859 vt_scroll(vw, 1, VHS_CUR);
860 break;
861 case FKEY | F(59): /* Page down. */
862 vt_termsize(vd, vw->vw_font, &size);
863 vt_scroll(vw, size.tp_row, VHS_CUR);
864 break;
865 }
866
867 if (console == 0)
868 VT_UNLOCK(vd);
869 }
870
871 static int
vt_processkey(keyboard_t * kbd,struct vt_device * vd,int c)872 vt_processkey(keyboard_t *kbd, struct vt_device *vd, int c)
873 {
874 struct vt_window *vw = vd->vd_curwindow;
875
876 random_harvest_queue(&c, sizeof(c), RANDOM_KEYBOARD);
877 #if VT_ALT_TO_ESC_HACK
878 if (c & RELKEY) {
879 switch (c & ~RELKEY) {
880 case (SPCLKEY | RALT):
881 if (vt_enable_altgr != 0)
882 break;
883 case (SPCLKEY | LALT):
884 vd->vd_kbstate &= ~ALKED;
885 }
886 /* Other keys ignored for RELKEY event. */
887 return (0);
888 } else {
889 switch (c & ~RELKEY) {
890 case (SPCLKEY | RALT):
891 if (vt_enable_altgr != 0)
892 break;
893 case (SPCLKEY | LALT):
894 vd->vd_kbstate |= ALKED;
895 }
896 }
897 #else
898 if (c & RELKEY)
899 /* Other keys ignored for RELKEY event. */
900 return (0);
901 #endif
902
903 if (vt_machine_kbdevent(vd, c))
904 return (0);
905
906 if (vw->vw_flags & VWF_SCROLL) {
907 vt_scrollmode_kbdevent(vw, c, 0/* Not a console */);
908 /* Scroll mode keys handled, nothing to do more. */
909 return (0);
910 }
911
912 if (c & SPCLKEY) {
913 c &= ~SPCLKEY;
914
915 if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) {
916 vw = vd->vd_windows[c - F_SCR];
917 vt_proc_window_switch(vw);
918 return (0);
919 }
920
921 switch (c) {
922 case NEXT:
923 /* Switch to next VT. */
924 c = (vw->vw_number + 1) % VT_MAXWINDOWS;
925 vw = vd->vd_windows[c];
926 vt_proc_window_switch(vw);
927 return (0);
928 case PREV:
929 /* Switch to previous VT. */
930 c = (vw->vw_number + VT_MAXWINDOWS - 1) % VT_MAXWINDOWS;
931 vw = vd->vd_windows[c];
932 vt_proc_window_switch(vw);
933 return (0);
934 case SLK: {
935 vt_save_kbd_state(vw, kbd);
936 VT_LOCK(vd);
937 if (vw->vw_kbdstate & SLKED) {
938 /* Turn scrolling on. */
939 vw->vw_flags |= VWF_SCROLL;
940 VTBUF_SLCK_ENABLE(&vw->vw_buf);
941 } else {
942 /* Turn scrolling off. */
943 vw->vw_flags &= ~VWF_SCROLL;
944 VTBUF_SLCK_DISABLE(&vw->vw_buf);
945 vt_scroll(vw, 0, VHS_END);
946 }
947 VT_UNLOCK(vd);
948 break;
949 }
950 case FKEY | F(1): case FKEY | F(2): case FKEY | F(3):
951 case FKEY | F(4): case FKEY | F(5): case FKEY | F(6):
952 case FKEY | F(7): case FKEY | F(8): case FKEY | F(9):
953 case FKEY | F(10): case FKEY | F(11): case FKEY | F(12):
954 /* F1 through F12 keys. */
955 terminal_input_special(vw->vw_terminal,
956 TKEY_F1 + c - (FKEY | F(1)));
957 break;
958 case FKEY | F(49): /* Home key. */
959 terminal_input_special(vw->vw_terminal, TKEY_HOME);
960 break;
961 case FKEY | F(50): /* Arrow up. */
962 terminal_input_special(vw->vw_terminal, TKEY_UP);
963 break;
964 case FKEY | F(51): /* Page up. */
965 terminal_input_special(vw->vw_terminal, TKEY_PAGE_UP);
966 break;
967 case FKEY | F(53): /* Arrow left. */
968 terminal_input_special(vw->vw_terminal, TKEY_LEFT);
969 break;
970 case FKEY | F(55): /* Arrow right. */
971 terminal_input_special(vw->vw_terminal, TKEY_RIGHT);
972 break;
973 case FKEY | F(57): /* End key. */
974 terminal_input_special(vw->vw_terminal, TKEY_END);
975 break;
976 case FKEY | F(58): /* Arrow down. */
977 terminal_input_special(vw->vw_terminal, TKEY_DOWN);
978 break;
979 case FKEY | F(59): /* Page down. */
980 terminal_input_special(vw->vw_terminal, TKEY_PAGE_DOWN);
981 break;
982 case FKEY | F(60): /* Insert key. */
983 terminal_input_special(vw->vw_terminal, TKEY_INSERT);
984 break;
985 case FKEY | F(61): /* Delete key. */
986 terminal_input_special(vw->vw_terminal, TKEY_DELETE);
987 break;
988 }
989 } else if (KEYFLAGS(c) == 0) {
990 /* Don't do UTF-8 conversion when doing raw mode. */
991 if (vw->vw_kbdmode == K_XLATE) {
992 #if VT_ALT_TO_ESC_HACK
993 if (vd->vd_kbstate & ALKED) {
994 /*
995 * Prepend ESC sequence if one of ALT keys down.
996 */
997 terminal_input_char(vw->vw_terminal, 0x1b);
998 }
999 #endif
1000 #if defined(KDB)
1001 kdb_alt_break(c, &vd->vd_altbrk);
1002 #endif
1003 terminal_input_char(vw->vw_terminal, KEYCHAR(c));
1004 } else
1005 terminal_input_raw(vw->vw_terminal, c);
1006 }
1007 return (0);
1008 }
1009
1010 static int
vt_kbdevent(keyboard_t * kbd,int event,void * arg)1011 vt_kbdevent(keyboard_t *kbd, int event, void *arg)
1012 {
1013 struct vt_device *vd = arg;
1014 int c;
1015
1016 switch (event) {
1017 case KBDIO_KEYINPUT:
1018 break;
1019 case KBDIO_UNLOADING:
1020 mtx_lock(&Giant);
1021 vd->vd_keyboard = NULL;
1022 kbd_release(kbd, (void *)vd);
1023 mtx_unlock(&Giant);
1024 return (0);
1025 default:
1026 return (EINVAL);
1027 }
1028
1029 while ((c = kbdd_read_char(kbd, 0)) != NOKEY)
1030 vt_processkey(kbd, vd, c);
1031
1032 return (0);
1033 }
1034
1035 static int
vt_allocate_keyboard(struct vt_device * vd)1036 vt_allocate_keyboard(struct vt_device *vd)
1037 {
1038 int grabbed, i, idx0, idx;
1039 keyboard_t *k0, *k;
1040 keyboard_info_t ki;
1041
1042 /*
1043 * If vt_upgrade() happens while the console is grabbed, we are
1044 * potentially going to switch keyboard devices while the keyboard is in
1045 * use. Unwind the grabbing of the current keyboard first, then we will
1046 * re-grab the new keyboard below, before we return.
1047 */
1048 if (vd->vd_curwindow == &vt_conswindow) {
1049 grabbed = vd->vd_curwindow->vw_grabbed;
1050 for (i = 0; i < grabbed; ++i)
1051 vtterm_cnungrab_noswitch(vd, vd->vd_curwindow);
1052 }
1053
1054 idx0 = kbd_allocate("kbdmux", -1, vd, vt_kbdevent, vd);
1055 if (idx0 >= 0) {
1056 DPRINTF(20, "%s: kbdmux allocated, idx = %d\n", __func__, idx0);
1057 k0 = kbd_get_keyboard(idx0);
1058
1059 for (idx = kbd_find_keyboard2("*", -1, 0);
1060 idx != -1;
1061 idx = kbd_find_keyboard2("*", -1, idx + 1)) {
1062 k = kbd_get_keyboard(idx);
1063
1064 if (idx == idx0 || KBD_IS_BUSY(k))
1065 continue;
1066
1067 bzero(&ki, sizeof(ki));
1068 strncpy(ki.kb_name, k->kb_name, sizeof(ki.kb_name));
1069 ki.kb_name[sizeof(ki.kb_name) - 1] = '\0';
1070 ki.kb_unit = k->kb_unit;
1071
1072 kbdd_ioctl(k0, KBADDKBD, (caddr_t) &ki);
1073 }
1074 } else {
1075 DPRINTF(20, "%s: no kbdmux allocated\n", __func__);
1076 idx0 = kbd_allocate("*", -1, vd, vt_kbdevent, vd);
1077 if (idx0 < 0) {
1078 DPRINTF(10, "%s: No keyboard found.\n", __func__);
1079 return (-1);
1080 }
1081 k0 = kbd_get_keyboard(idx0);
1082 }
1083 vd->vd_keyboard = k0;
1084 DPRINTF(20, "%s: vd_keyboard = %d\n", __func__,
1085 vd->vd_keyboard->kb_index);
1086
1087 if (vd->vd_curwindow == &vt_conswindow) {
1088 for (i = 0; i < grabbed; ++i)
1089 vtterm_cngrab_noswitch(vd, vd->vd_curwindow);
1090 }
1091
1092 return (idx0);
1093 }
1094
1095 #define DEVCTL_LEN 64
1096 static void
vtterm_devctl(bool enabled,bool hushed,int hz,sbintime_t duration)1097 vtterm_devctl(bool enabled, bool hushed, int hz, sbintime_t duration)
1098 {
1099 struct sbuf sb;
1100 char *buf;
1101
1102 buf = malloc(DEVCTL_LEN, M_VT, M_NOWAIT);
1103 if (buf == NULL)
1104 return;
1105 sbuf_new(&sb, buf, DEVCTL_LEN, SBUF_FIXEDLEN);
1106 sbuf_printf(&sb, "enabled=%s hushed=%s hz=%d duration_ms=%d",
1107 enabled ? "true" : "false", hushed ? "true" : "false",
1108 hz, (int)(duration / SBT_1MS));
1109 sbuf_finish(&sb);
1110 if (sbuf_error(&sb) == 0)
1111 devctl_notify("VT", "BELL", "RING", sbuf_data(&sb));
1112 sbuf_delete(&sb);
1113 free(buf, M_VT);
1114 }
1115
1116 static void
vtterm_bell(struct terminal * tm)1117 vtterm_bell(struct terminal *tm)
1118 {
1119 struct vt_window *vw = tm->tm_softc;
1120 struct vt_device *vd = vw->vw_device;
1121
1122 vtterm_devctl(vt_enable_bell, vd->vd_flags & VDF_QUIET_BELL,
1123 vw->vw_bell_pitch, vw->vw_bell_duration);
1124
1125 if (!vt_enable_bell)
1126 return;
1127
1128 if (vd->vd_flags & VDF_QUIET_BELL)
1129 return;
1130
1131 if (vw->vw_bell_pitch == 0 ||
1132 vw->vw_bell_duration == 0)
1133 return;
1134
1135 sysbeep(vw->vw_bell_pitch, vw->vw_bell_duration);
1136 }
1137
1138 static void
vtterm_beep(struct terminal * tm,u_int param)1139 vtterm_beep(struct terminal *tm, u_int param)
1140 {
1141 u_int freq;
1142 sbintime_t period;
1143 struct vt_window *vw = tm->tm_softc;
1144 struct vt_device *vd = vw->vw_device;
1145
1146 if ((param == 0) || ((param & 0xffff) == 0)) {
1147 vtterm_bell(tm);
1148 return;
1149 }
1150
1151 period = ((param >> 16) & 0xffff) * SBT_1MS;
1152 freq = 1193182 / (param & 0xffff);
1153
1154 vtterm_devctl(vt_enable_bell, vd->vd_flags & VDF_QUIET_BELL,
1155 freq, period);
1156
1157 if (!vt_enable_bell)
1158 return;
1159
1160 sysbeep(freq, period);
1161 }
1162
1163 static void
vtterm_cursor(struct terminal * tm,const term_pos_t * p)1164 vtterm_cursor(struct terminal *tm, const term_pos_t *p)
1165 {
1166 struct vt_window *vw = tm->tm_softc;
1167
1168 vtbuf_cursor_position(&vw->vw_buf, p);
1169 }
1170
1171 static void
vtterm_putchar(struct terminal * tm,const term_pos_t * p,term_char_t c)1172 vtterm_putchar(struct terminal *tm, const term_pos_t *p, term_char_t c)
1173 {
1174 struct vt_window *vw = tm->tm_softc;
1175
1176 vtbuf_putchar(&vw->vw_buf, p, c);
1177 }
1178
1179 static void
vtterm_fill(struct terminal * tm,const term_rect_t * r,term_char_t c)1180 vtterm_fill(struct terminal *tm, const term_rect_t *r, term_char_t c)
1181 {
1182 struct vt_window *vw = tm->tm_softc;
1183
1184 vtbuf_fill(&vw->vw_buf, r, c);
1185 }
1186
1187 static void
vtterm_copy(struct terminal * tm,const term_rect_t * r,const term_pos_t * p)1188 vtterm_copy(struct terminal *tm, const term_rect_t *r,
1189 const term_pos_t *p)
1190 {
1191 struct vt_window *vw = tm->tm_softc;
1192
1193 vtbuf_copy(&vw->vw_buf, r, p);
1194 }
1195
1196 static void
vtterm_param(struct terminal * tm,int cmd,unsigned int arg)1197 vtterm_param(struct terminal *tm, int cmd, unsigned int arg)
1198 {
1199 struct vt_window *vw = tm->tm_softc;
1200
1201 switch (cmd) {
1202 case TP_SETLOCALCURSOR:
1203 /*
1204 * 0 means normal (usually block), 1 means hidden, and
1205 * 2 means blinking (always block) for compatibility with
1206 * syscons. We don't support any changes except hiding,
1207 * so must map 2 to 0.
1208 */
1209 arg = (arg == 1) ? 0 : 1;
1210 /* FALLTHROUGH */
1211 case TP_SHOWCURSOR:
1212 vtbuf_cursor_visibility(&vw->vw_buf, arg);
1213 vt_resume_flush_timer(vw, 0);
1214 break;
1215 case TP_MOUSE:
1216 vw->vw_mouse_level = arg;
1217 break;
1218 case TP_SETBELLPD:
1219 vw->vw_bell_pitch = TP_SETBELLPD_PITCH(arg);
1220 vw->vw_bell_duration =
1221 TICKS_2_MSEC(TP_SETBELLPD_DURATION(arg)) * SBT_1MS;
1222 break;
1223 }
1224 }
1225
1226 void
vt_determine_colors(term_char_t c,int cursor,term_color_t * fg,term_color_t * bg)1227 vt_determine_colors(term_char_t c, int cursor,
1228 term_color_t *fg, term_color_t *bg)
1229 {
1230 term_color_t tmp;
1231 int invert;
1232
1233 invert = 0;
1234
1235 *fg = TCHAR_FGCOLOR(c);
1236 if (TCHAR_FORMAT(c) & TF_BOLD)
1237 *fg = TCOLOR_LIGHT(*fg);
1238 *bg = TCHAR_BGCOLOR(c);
1239 if (TCHAR_FORMAT(c) & TF_BLINK)
1240 *bg = TCOLOR_LIGHT(*bg);
1241
1242 if (TCHAR_FORMAT(c) & TF_REVERSE)
1243 invert ^= 1;
1244 if (cursor)
1245 invert ^= 1;
1246
1247 if (invert) {
1248 tmp = *fg;
1249 *fg = *bg;
1250 *bg = tmp;
1251 }
1252 }
1253
1254 #ifndef SC_NO_CUTPASTE
1255 int
vt_is_cursor_in_area(const struct vt_device * vd,const term_rect_t * area)1256 vt_is_cursor_in_area(const struct vt_device *vd, const term_rect_t *area)
1257 {
1258 unsigned int mx, my;
1259
1260 /*
1261 * We use the cursor position saved during the current refresh,
1262 * in case the cursor moved since.
1263 */
1264 mx = vd->vd_mx_drawn + vd->vd_curwindow->vw_draw_area.tr_begin.tp_col;
1265 my = vd->vd_my_drawn + vd->vd_curwindow->vw_draw_area.tr_begin.tp_row;
1266
1267 if (mx >= area->tr_end.tp_col ||
1268 mx + vd->vd_mcursor->width <= area->tr_begin.tp_col ||
1269 my >= area->tr_end.tp_row ||
1270 my + vd->vd_mcursor->height <= area->tr_begin.tp_row)
1271 return (0);
1272 return (1);
1273 }
1274
1275 static void
vt_mark_mouse_position_as_dirty(struct vt_device * vd,int locked)1276 vt_mark_mouse_position_as_dirty(struct vt_device *vd, int locked)
1277 {
1278 term_rect_t area;
1279 struct vt_window *vw;
1280 struct vt_font *vf;
1281 int x, y;
1282
1283 vw = vd->vd_curwindow;
1284 vf = vw->vw_font;
1285
1286 x = vd->vd_mx_drawn;
1287 y = vd->vd_my_drawn;
1288
1289 if (vf != NULL) {
1290 area.tr_begin.tp_col = x / vf->vf_width;
1291 area.tr_begin.tp_row = y / vf->vf_height;
1292 area.tr_end.tp_col =
1293 ((x + vd->vd_mcursor->width) / vf->vf_width) + 1;
1294 area.tr_end.tp_row =
1295 ((y + vd->vd_mcursor->height) / vf->vf_height) + 1;
1296 } else {
1297 /*
1298 * No font loaded (ie. vt_vga operating in textmode).
1299 *
1300 * FIXME: This fake area needs to be revisited once the
1301 * mouse cursor is supported in vt_vga's textmode.
1302 */
1303 area.tr_begin.tp_col = x;
1304 area.tr_begin.tp_row = y;
1305 area.tr_end.tp_col = x + 2;
1306 area.tr_end.tp_row = y + 2;
1307 }
1308
1309 if (!locked)
1310 vtbuf_lock(&vw->vw_buf);
1311 if (vd->vd_driver->vd_invalidate_text)
1312 vd->vd_driver->vd_invalidate_text(vd, &area);
1313 vtbuf_dirty(&vw->vw_buf, &area);
1314 if (!locked)
1315 vtbuf_unlock(&vw->vw_buf);
1316 }
1317 #endif
1318
1319 static void
vt_set_border(struct vt_device * vd,const term_rect_t * area,term_color_t c)1320 vt_set_border(struct vt_device *vd, const term_rect_t *area,
1321 term_color_t c)
1322 {
1323 vd_drawrect_t *drawrect = vd->vd_driver->vd_drawrect;
1324
1325 if (drawrect == NULL)
1326 return;
1327
1328 /* Top bar */
1329 if (area->tr_begin.tp_row > 0)
1330 drawrect(vd, 0, 0, vd->vd_width - 1,
1331 area->tr_begin.tp_row - 1, 1, c);
1332
1333 /* Left bar */
1334 if (area->tr_begin.tp_col > 0)
1335 drawrect(vd, 0, area->tr_begin.tp_row,
1336 area->tr_begin.tp_col - 1, area->tr_end.tp_row - 1, 1, c);
1337
1338 /* Right bar */
1339 if (area->tr_end.tp_col < vd->vd_width)
1340 drawrect(vd, area->tr_end.tp_col, area->tr_begin.tp_row,
1341 vd->vd_width - 1, area->tr_end.tp_row - 1, 1, c);
1342
1343 /* Bottom bar */
1344 if (area->tr_end.tp_row < vd->vd_height)
1345 drawrect(vd, 0, area->tr_end.tp_row, vd->vd_width - 1,
1346 vd->vd_height - 1, 1, c);
1347 }
1348
1349 static int
vt_flush(struct vt_device * vd)1350 vt_flush(struct vt_device *vd)
1351 {
1352 struct vt_window *vw;
1353 struct vt_font *vf;
1354 term_rect_t tarea;
1355 #ifndef SC_NO_CUTPASTE
1356 int cursor_was_shown, cursor_moved;
1357 #endif
1358
1359 vw = vd->vd_curwindow;
1360 if (vw == NULL)
1361 return (0);
1362
1363 if (vd->vd_flags & VDF_SPLASH || vw->vw_flags & VWF_BUSY)
1364 return (0);
1365
1366 vf = vw->vw_font;
1367 if (((vd->vd_flags & VDF_TEXTMODE) == 0) && (vf == NULL))
1368 return (0);
1369
1370 vtbuf_lock(&vw->vw_buf);
1371
1372 #ifndef SC_NO_CUTPASTE
1373 cursor_was_shown = vd->vd_mshown;
1374 cursor_moved = (vd->vd_mx != vd->vd_mx_drawn ||
1375 vd->vd_my != vd->vd_my_drawn);
1376
1377 /* Check if the cursor should be displayed or not. */
1378 if ((vd->vd_flags & VDF_MOUSECURSOR) && /* Mouse support enabled. */
1379 !(vw->vw_flags & VWF_MOUSE_HIDE) && /* Cursor displayed. */
1380 !kdb_active && !KERNEL_PANICKED()) { /* DDB inactive. */
1381 vd->vd_mshown = 1;
1382 } else {
1383 vd->vd_mshown = 0;
1384 }
1385
1386 /*
1387 * If the cursor changed display state or moved, we must mark
1388 * the old position as dirty, so that it's erased.
1389 */
1390 if (cursor_was_shown != vd->vd_mshown ||
1391 (vd->vd_mshown && cursor_moved))
1392 vt_mark_mouse_position_as_dirty(vd, true);
1393
1394 /*
1395 * Save position of the mouse cursor. It's used by backends to
1396 * know where to draw the cursor and during the next refresh to
1397 * erase the previous position.
1398 */
1399 vd->vd_mx_drawn = vd->vd_mx;
1400 vd->vd_my_drawn = vd->vd_my;
1401
1402 /*
1403 * If the cursor is displayed and has moved since last refresh,
1404 * mark the new position as dirty.
1405 */
1406 if (vd->vd_mshown && cursor_moved)
1407 vt_mark_mouse_position_as_dirty(vd, true);
1408 #endif
1409
1410 vtbuf_undirty(&vw->vw_buf, &tarea);
1411
1412 /* Force a full redraw when the screen contents might be invalid. */
1413 if (vd->vd_flags & (VDF_INVALID | VDF_SUSPENDED)) {
1414 const teken_attr_t *a;
1415
1416 vd->vd_flags &= ~VDF_INVALID;
1417
1418 a = teken_get_curattr(&vw->vw_terminal->tm_emulator);
1419 vt_set_border(vd, &vw->vw_draw_area, a->ta_bgcolor);
1420 vt_termrect(vd, vf, &tarea);
1421 if (vd->vd_driver->vd_invalidate_text)
1422 vd->vd_driver->vd_invalidate_text(vd, &tarea);
1423 if (vt_draw_logo_cpus)
1424 vtterm_draw_cpu_logos(vd);
1425 }
1426
1427 if (tarea.tr_begin.tp_col < tarea.tr_end.tp_col) {
1428 vd->vd_driver->vd_bitblt_text(vd, vw, &tarea);
1429 vtbuf_unlock(&vw->vw_buf);
1430 return (1);
1431 }
1432
1433 vtbuf_unlock(&vw->vw_buf);
1434 return (0);
1435 }
1436
1437 static void
vt_timer(void * arg)1438 vt_timer(void *arg)
1439 {
1440 struct vt_device *vd;
1441 int changed;
1442
1443 vd = arg;
1444 /* Update screen if required. */
1445 changed = vt_flush(vd);
1446
1447 /* Schedule for next update. */
1448 if (changed)
1449 vt_schedule_flush(vd, 0);
1450 else
1451 vd->vd_timer_armed = 0;
1452 }
1453
1454 static void
vtterm_pre_input(struct terminal * tm)1455 vtterm_pre_input(struct terminal *tm)
1456 {
1457 struct vt_window *vw = tm->tm_softc;
1458
1459 vtbuf_lock(&vw->vw_buf);
1460 }
1461
1462 static void
vtterm_post_input(struct terminal * tm)1463 vtterm_post_input(struct terminal *tm)
1464 {
1465 struct vt_window *vw = tm->tm_softc;
1466
1467 vtbuf_unlock(&vw->vw_buf);
1468 vt_resume_flush_timer(vw, 0);
1469 }
1470
1471 static void
vtterm_done(struct terminal * tm)1472 vtterm_done(struct terminal *tm)
1473 {
1474 struct vt_window *vw = tm->tm_softc;
1475 struct vt_device *vd = vw->vw_device;
1476
1477 if (kdb_active || KERNEL_PANICKED()) {
1478 /* Switch to the debugger. */
1479 if (vd->vd_curwindow != vw) {
1480 vd->vd_curwindow = vw;
1481 vd->vd_flags |= VDF_INVALID;
1482 if (vd->vd_driver->vd_postswitch)
1483 vd->vd_driver->vd_postswitch(vd);
1484 }
1485 vd->vd_flags &= ~VDF_SPLASH;
1486 vt_flush(vd);
1487 } else if (!(vd->vd_flags & VDF_ASYNC)) {
1488 vt_flush(vd);
1489 }
1490 }
1491
1492 #ifdef DEV_SPLASH
1493 static void
vtterm_splash(struct vt_device * vd)1494 vtterm_splash(struct vt_device *vd)
1495 {
1496 vt_axis_t top, left;
1497
1498 /* Display a nice boot splash. */
1499 if (!(vd->vd_flags & VDF_TEXTMODE) && (boothowto & RB_MUTE)) {
1500 top = (vd->vd_height - vt_logo_height) / 2;
1501 left = (vd->vd_width - vt_logo_width) / 2;
1502 switch (vt_logo_depth) {
1503 case 1:
1504 /* XXX: Unhardcode colors! */
1505 vd->vd_driver->vd_bitblt_bmp(vd, vd->vd_curwindow,
1506 vt_logo_image, NULL, vt_logo_width, vt_logo_height,
1507 left, top, TC_WHITE, TC_BLACK);
1508 }
1509 vd->vd_flags |= VDF_SPLASH;
1510 }
1511 }
1512 #endif
1513
1514 static struct vt_font *
parse_font_info_static(struct font_info * fi)1515 parse_font_info_static(struct font_info *fi)
1516 {
1517 struct vt_font *vfp;
1518 uintptr_t ptr;
1519 uint32_t checksum;
1520
1521 if (fi == NULL)
1522 return (NULL);
1523
1524 ptr = (uintptr_t)fi;
1525 /*
1526 * Compute and verify checksum. The total sum of all the fields
1527 * must be 0.
1528 */
1529 checksum = fi->fi_width;
1530 checksum += fi->fi_height;
1531 checksum += fi->fi_bitmap_size;
1532 for (unsigned i = 0; i < VFNT_MAPS; i++)
1533 checksum += fi->fi_map_count[i];
1534
1535 if (checksum + fi->fi_checksum != 0)
1536 return (NULL);
1537
1538 ptr += sizeof(struct font_info);
1539 ptr = roundup2(ptr, 8);
1540
1541 vfp = &vt_font_loader;
1542 vfp->vf_height = fi->fi_height;
1543 vfp->vf_width = fi->fi_width;
1544 /* This is default font, set refcount 1 to disable removal. */
1545 vfp->vf_refcount = 1;
1546 for (unsigned i = 0; i < VFNT_MAPS; i++) {
1547 if (fi->fi_map_count[i] == 0)
1548 continue;
1549 vfp->vf_map_count[i] = fi->fi_map_count[i];
1550 vfp->vf_map[i] = (vfnt_map_t *)ptr;
1551 ptr += (fi->fi_map_count[i] * sizeof(vfnt_map_t));
1552 ptr = roundup2(ptr, 8);
1553 }
1554 vfp->vf_bytes = (uint8_t *)ptr;
1555 return (vfp);
1556 }
1557
1558 /*
1559 * Set up default font with allocated data structures.
1560 * However, we can not set refcount here, because it is already set and
1561 * incremented in vtterm_cnprobe() to avoid being released by font load from
1562 * userland.
1563 */
1564 static struct vt_font *
parse_font_info(struct font_info * fi)1565 parse_font_info(struct font_info *fi)
1566 {
1567 struct vt_font *vfp;
1568 uintptr_t ptr;
1569 uint32_t checksum;
1570 size_t size;
1571
1572 if (fi == NULL)
1573 return (NULL);
1574
1575 ptr = (uintptr_t)fi;
1576 /*
1577 * Compute and verify checksum. The total sum of all the fields
1578 * must be 0.
1579 */
1580 checksum = fi->fi_width;
1581 checksum += fi->fi_height;
1582 checksum += fi->fi_bitmap_size;
1583 for (unsigned i = 0; i < VFNT_MAPS; i++)
1584 checksum += fi->fi_map_count[i];
1585
1586 if (checksum + fi->fi_checksum != 0)
1587 return (NULL);
1588
1589 ptr += sizeof(struct font_info);
1590 ptr = roundup2(ptr, 8);
1591
1592 vfp = &vt_font_loader;
1593 vfp->vf_height = fi->fi_height;
1594 vfp->vf_width = fi->fi_width;
1595 for (unsigned i = 0; i < VFNT_MAPS; i++) {
1596 if (fi->fi_map_count[i] == 0)
1597 continue;
1598 vfp->vf_map_count[i] = fi->fi_map_count[i];
1599 size = fi->fi_map_count[i] * sizeof(vfnt_map_t);
1600 vfp->vf_map[i] = malloc(size, M_VT, M_WAITOK | M_ZERO);
1601 bcopy((vfnt_map_t *)ptr, vfp->vf_map[i], size);
1602 ptr += size;
1603 ptr = roundup2(ptr, 8);
1604 }
1605 vfp->vf_bytes = malloc(fi->fi_bitmap_size, M_VT, M_WAITOK | M_ZERO);
1606 bcopy((uint8_t *)ptr, vfp->vf_bytes, fi->fi_bitmap_size);
1607 return (vfp);
1608 }
1609
1610 static void
vt_init_font(void * arg)1611 vt_init_font(void *arg)
1612 {
1613 caddr_t kmdp;
1614 struct font_info *fi;
1615 struct vt_font *font;
1616
1617 kmdp = preload_search_by_type("elf kernel");
1618 if (kmdp == NULL)
1619 kmdp = preload_search_by_type("elf64 kernel");
1620 fi = MD_FETCH(kmdp, MODINFOMD_FONT, struct font_info *);
1621
1622 font = parse_font_info(fi);
1623 if (font != NULL)
1624 vt_font_assigned = font;
1625 }
1626
1627 SYSINIT(vt_init_font, SI_SUB_KMEM, SI_ORDER_ANY, vt_init_font, &vt_consdev);
1628
1629 static void
vt_init_font_static(void)1630 vt_init_font_static(void)
1631 {
1632 caddr_t kmdp;
1633 struct font_info *fi;
1634 struct vt_font *font;
1635
1636 kmdp = preload_search_by_type("elf kernel");
1637 if (kmdp == NULL)
1638 kmdp = preload_search_by_type("elf64 kernel");
1639 fi = MD_FETCH(kmdp, MODINFOMD_FONT, struct font_info *);
1640
1641 font = parse_font_info_static(fi);
1642 if (font != NULL)
1643 vt_font_assigned = font;
1644 }
1645
1646 static void
vtterm_cnprobe(struct terminal * tm,struct consdev * cp)1647 vtterm_cnprobe(struct terminal *tm, struct consdev *cp)
1648 {
1649 struct vt_driver *vtd, **vtdlist, *vtdbest = NULL;
1650 struct vt_window *vw = tm->tm_softc;
1651 struct vt_device *vd = vw->vw_device;
1652 struct winsize wsz;
1653 const term_attr_t *a;
1654
1655 if (!vty_enabled(VTY_VT))
1656 return;
1657
1658 if (vd->vd_flags & VDF_INITIALIZED)
1659 /* Initialization already done. */
1660 return;
1661
1662 SET_FOREACH(vtdlist, vt_drv_set) {
1663 vtd = *vtdlist;
1664 if (vtd->vd_probe == NULL)
1665 continue;
1666 if (vtd->vd_probe(vd) == CN_DEAD)
1667 continue;
1668 if ((vtdbest == NULL) ||
1669 (vtd->vd_priority > vtdbest->vd_priority))
1670 vtdbest = vtd;
1671 }
1672 if (vtdbest == NULL) {
1673 cp->cn_pri = CN_DEAD;
1674 vd->vd_flags |= VDF_DEAD;
1675 } else {
1676 vd->vd_driver = vtdbest;
1677 cp->cn_pri = vd->vd_driver->vd_init(vd);
1678 }
1679
1680 /* Check if driver's vt_init return CN_DEAD. */
1681 if (cp->cn_pri == CN_DEAD) {
1682 vd->vd_flags |= VDF_DEAD;
1683 }
1684
1685 /* Initialize any early-boot keyboard drivers */
1686 kbd_configure(KB_CONF_PROBE_ONLY);
1687
1688 vd->vd_unit = atomic_fetchadd_int(&vt_unit, 1);
1689 vd->vd_windows[VT_CONSWINDOW] = vw;
1690 sprintf(cp->cn_name, "ttyv%r", VT_UNIT(vw));
1691
1692 vt_init_font_static();
1693
1694 /* Attach default font if not in TEXTMODE. */
1695 if ((vd->vd_flags & VDF_TEXTMODE) == 0) {
1696 vw->vw_font = vtfont_ref(vt_font_assigned);
1697 vt_compute_drawable_area(vw);
1698 }
1699
1700 /*
1701 * The original screen size was faked (_VTDEFW x _VTDEFH). Now
1702 * that we have the real viewable size, fix it in the static
1703 * buffer.
1704 */
1705 if (vd->vd_width != 0 && vd->vd_height != 0)
1706 vt_termsize(vd, vw->vw_font, &vw->vw_buf.vb_scr_size);
1707
1708 /* We need to access terminal attributes from vtbuf */
1709 vw->vw_buf.vb_terminal = tm;
1710 vtbuf_init_early(&vw->vw_buf);
1711 vt_winsize(vd, vw->vw_font, &wsz);
1712 a = teken_get_curattr(&tm->tm_emulator);
1713 terminal_set_winsize_blank(tm, &wsz, 1, a);
1714
1715 if (vtdbest != NULL) {
1716 #ifdef DEV_SPLASH
1717 if (!vt_splash_cpu)
1718 vtterm_splash(vd);
1719 #endif
1720 vd->vd_flags |= VDF_INITIALIZED;
1721 }
1722 }
1723
1724 static int
vtterm_cngetc(struct terminal * tm)1725 vtterm_cngetc(struct terminal *tm)
1726 {
1727 struct vt_window *vw = tm->tm_softc;
1728 struct vt_device *vd = vw->vw_device;
1729 keyboard_t *kbd;
1730 u_int c;
1731
1732 if (vw->vw_kbdsq && *vw->vw_kbdsq)
1733 return (*vw->vw_kbdsq++);
1734
1735 /* Make sure the splash screen is not there. */
1736 if (vd->vd_flags & VDF_SPLASH) {
1737 /* Remove splash */
1738 vd->vd_flags &= ~VDF_SPLASH;
1739 /* Mark screen as invalid to force update */
1740 vd->vd_flags |= VDF_INVALID;
1741 vt_flush(vd);
1742 }
1743
1744 /* Stripped down keyboard handler. */
1745 if ((kbd = vd->vd_keyboard) == NULL)
1746 return (-1);
1747
1748 /* Force keyboard input mode to K_XLATE */
1749 vw->vw_kbdmode = K_XLATE;
1750 vt_update_kbd_mode(vw, kbd);
1751
1752 /* Switch the keyboard to polling to make it work here. */
1753 kbdd_poll(kbd, TRUE);
1754 c = kbdd_read_char(kbd, 0);
1755 kbdd_poll(kbd, FALSE);
1756 if (c & RELKEY)
1757 return (-1);
1758
1759 if (vw->vw_flags & VWF_SCROLL) {
1760 vt_scrollmode_kbdevent(vw, c, 1/* Console mode */);
1761 vt_flush(vd);
1762 return (-1);
1763 }
1764
1765 /* Stripped down handling of vt_kbdevent(), without locking, etc. */
1766 if (c & SPCLKEY) {
1767 switch (c) {
1768 case SPCLKEY | SLK:
1769 vt_save_kbd_state(vw, kbd);
1770 if (vw->vw_kbdstate & SLKED) {
1771 /* Turn scrolling on. */
1772 vw->vw_flags |= VWF_SCROLL;
1773 VTBUF_SLCK_ENABLE(&vw->vw_buf);
1774 } else {
1775 /* Turn scrolling off. */
1776 vt_scroll(vw, 0, VHS_END);
1777 vw->vw_flags &= ~VWF_SCROLL;
1778 VTBUF_SLCK_DISABLE(&vw->vw_buf);
1779 }
1780 break;
1781 /* XXX: KDB can handle history. */
1782 case SPCLKEY | FKEY | F(50): /* Arrow up. */
1783 vw->vw_kbdsq = "\x1b[A";
1784 break;
1785 case SPCLKEY | FKEY | F(58): /* Arrow down. */
1786 vw->vw_kbdsq = "\x1b[B";
1787 break;
1788 case SPCLKEY | FKEY | F(55): /* Arrow right. */
1789 vw->vw_kbdsq = "\x1b[C";
1790 break;
1791 case SPCLKEY | FKEY | F(53): /* Arrow left. */
1792 vw->vw_kbdsq = "\x1b[D";
1793 break;
1794 }
1795
1796 /* Force refresh to make scrollback work. */
1797 vt_flush(vd);
1798 } else if (KEYFLAGS(c) == 0) {
1799 return (KEYCHAR(c));
1800 }
1801
1802 if (vw->vw_kbdsq && *vw->vw_kbdsq)
1803 return (*vw->vw_kbdsq++);
1804
1805 return (-1);
1806 }
1807
1808 /*
1809 * These two do most of what we want to do in vtterm_cnungrab, but without
1810 * actually switching windows. This is necessary for, e.g.,
1811 * vt_allocate_keyboard() to get the current keyboard into the state it needs to
1812 * be in without damaging the device's window state.
1813 *
1814 * Both return the current grab count, though it's only used in vtterm_cnungrab.
1815 */
1816 static int
vtterm_cngrab_noswitch(struct vt_device * vd,struct vt_window * vw)1817 vtterm_cngrab_noswitch(struct vt_device *vd, struct vt_window *vw)
1818 {
1819 keyboard_t *kbd;
1820
1821 if (vw->vw_grabbed++ > 0)
1822 return (vw->vw_grabbed);
1823
1824 if ((kbd = vd->vd_keyboard) == NULL)
1825 return (1);
1826
1827 /*
1828 * Make sure the keyboard is accessible even when the kbd device
1829 * driver is disabled.
1830 */
1831 kbdd_enable(kbd);
1832
1833 /* We shall always use the keyboard in the XLATE mode here. */
1834 vw->vw_prev_kbdmode = vw->vw_kbdmode;
1835 vw->vw_kbdmode = K_XLATE;
1836 vt_update_kbd_mode(vw, kbd);
1837
1838 kbdd_poll(kbd, TRUE);
1839 return (1);
1840 }
1841
1842 static int
vtterm_cnungrab_noswitch(struct vt_device * vd,struct vt_window * vw)1843 vtterm_cnungrab_noswitch(struct vt_device *vd, struct vt_window *vw)
1844 {
1845 keyboard_t *kbd;
1846
1847 if (--vw->vw_grabbed > 0)
1848 return (vw->vw_grabbed);
1849
1850 if ((kbd = vd->vd_keyboard) == NULL)
1851 return (0);
1852
1853 kbdd_poll(kbd, FALSE);
1854
1855 vw->vw_kbdmode = vw->vw_prev_kbdmode;
1856 vt_update_kbd_mode(vw, kbd);
1857 kbdd_disable(kbd);
1858 return (0);
1859 }
1860
1861 static void
vtterm_cngrab(struct terminal * tm)1862 vtterm_cngrab(struct terminal *tm)
1863 {
1864 struct vt_device *vd;
1865 struct vt_window *vw;
1866
1867 vw = tm->tm_softc;
1868 vd = vw->vw_device;
1869
1870 /* To be restored after we ungrab. */
1871 if (vd->vd_grabwindow == NULL)
1872 vd->vd_grabwindow = vd->vd_curwindow;
1873
1874 if (!cold)
1875 vt_window_switch(vw);
1876
1877 vtterm_cngrab_noswitch(vd, vw);
1878 }
1879
1880 static void
vtterm_cnungrab(struct terminal * tm)1881 vtterm_cnungrab(struct terminal *tm)
1882 {
1883 struct vt_device *vd;
1884 struct vt_window *vw;
1885
1886 vw = tm->tm_softc;
1887 vd = vw->vw_device;
1888
1889 MPASS(vd->vd_grabwindow != NULL);
1890 if (vtterm_cnungrab_noswitch(vd, vw) != 0)
1891 return;
1892
1893 if (!cold && vd->vd_grabwindow != vw)
1894 vt_window_switch(vd->vd_grabwindow);
1895
1896 vd->vd_grabwindow = NULL;
1897 }
1898
1899 static void
vtterm_opened(struct terminal * tm,int opened)1900 vtterm_opened(struct terminal *tm, int opened)
1901 {
1902 struct vt_window *vw = tm->tm_softc;
1903 struct vt_device *vd = vw->vw_device;
1904
1905 VT_LOCK(vd);
1906 vd->vd_flags &= ~VDF_SPLASH;
1907 if (opened)
1908 vw->vw_flags |= VWF_OPENED;
1909 else {
1910 vw->vw_flags &= ~VWF_OPENED;
1911 /* TODO: finish ACQ/REL */
1912 }
1913 VT_UNLOCK(vd);
1914 }
1915
1916 static int
vt_change_font(struct vt_window * vw,struct vt_font * vf)1917 vt_change_font(struct vt_window *vw, struct vt_font *vf)
1918 {
1919 struct vt_device *vd = vw->vw_device;
1920 struct terminal *tm = vw->vw_terminal;
1921 term_pos_t size;
1922 struct winsize wsz;
1923
1924 /*
1925 * Changing fonts.
1926 *
1927 * Changing fonts is a little tricky. We must prevent
1928 * simultaneous access to the device, so we must stop
1929 * the display timer and the terminal from accessing.
1930 * We need to switch fonts and grow our screen buffer.
1931 *
1932 * XXX: Right now the code uses terminal_mute() to
1933 * prevent data from reaching the console driver while
1934 * resizing the screen buffer. This isn't elegant...
1935 */
1936
1937 VT_LOCK(vd);
1938 if (vw->vw_flags & VWF_BUSY) {
1939 /* Another process is changing the font. */
1940 VT_UNLOCK(vd);
1941 return (EBUSY);
1942 }
1943 vw->vw_flags |= VWF_BUSY;
1944 VT_UNLOCK(vd);
1945
1946 vt_termsize(vd, vf, &size);
1947 vt_winsize(vd, vf, &wsz);
1948
1949 /* Grow the screen buffer and terminal. */
1950 terminal_mute(tm, 1);
1951 vtbuf_grow(&vw->vw_buf, &size, vw->vw_buf.vb_history_size);
1952 terminal_set_winsize_blank(tm, &wsz, 0, NULL);
1953 terminal_set_cursor(tm, &vw->vw_buf.vb_cursor);
1954 terminal_mute(tm, 0);
1955
1956 /* Actually apply the font to the current window. */
1957 VT_LOCK(vd);
1958 if (vw->vw_font != vf && vw->vw_font != NULL && vf != NULL) {
1959 /*
1960 * In case vt_change_font called to update size we don't need
1961 * to update font link.
1962 */
1963 vtfont_unref(vw->vw_font);
1964 vw->vw_font = vtfont_ref(vf);
1965 }
1966
1967 /*
1968 * Compute the drawable area and move the mouse cursor inside
1969 * it, in case the new area is smaller than the previous one.
1970 */
1971 vt_compute_drawable_area(vw);
1972 vd->vd_mx = min(vd->vd_mx,
1973 vw->vw_draw_area.tr_end.tp_col -
1974 vw->vw_draw_area.tr_begin.tp_col - 1);
1975 vd->vd_my = min(vd->vd_my,
1976 vw->vw_draw_area.tr_end.tp_row -
1977 vw->vw_draw_area.tr_begin.tp_row - 1);
1978
1979 /* Force a full redraw the next timer tick. */
1980 if (vd->vd_curwindow == vw) {
1981 vd->vd_flags |= VDF_INVALID;
1982 vt_resume_flush_timer(vw, 0);
1983 }
1984 vw->vw_flags &= ~VWF_BUSY;
1985 VT_UNLOCK(vd);
1986 return (0);
1987 }
1988
1989 static int
vt_proc_alive(struct vt_window * vw)1990 vt_proc_alive(struct vt_window *vw)
1991 {
1992 struct proc *p;
1993
1994 if (vw->vw_smode.mode != VT_PROCESS)
1995 return (FALSE);
1996
1997 if (vw->vw_proc) {
1998 if ((p = pfind(vw->vw_pid)) != NULL)
1999 PROC_UNLOCK(p);
2000 if (vw->vw_proc == p)
2001 return (TRUE);
2002 vw->vw_proc = NULL;
2003 vw->vw_smode.mode = VT_AUTO;
2004 DPRINTF(1, "vt controlling process %d died\n", vw->vw_pid);
2005 vw->vw_pid = 0;
2006 }
2007 return (FALSE);
2008 }
2009
2010 static int
signal_vt_rel(struct vt_window * vw)2011 signal_vt_rel(struct vt_window *vw)
2012 {
2013
2014 if (vw->vw_smode.mode != VT_PROCESS)
2015 return (FALSE);
2016 if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) {
2017 vw->vw_proc = NULL;
2018 vw->vw_pid = 0;
2019 return (TRUE);
2020 }
2021 vw->vw_flags |= VWF_SWWAIT_REL;
2022 PROC_LOCK(vw->vw_proc);
2023 kern_psignal(vw->vw_proc, vw->vw_smode.relsig);
2024 PROC_UNLOCK(vw->vw_proc);
2025 DPRINTF(1, "sending relsig to %d\n", vw->vw_pid);
2026 return (TRUE);
2027 }
2028
2029 static int
signal_vt_acq(struct vt_window * vw)2030 signal_vt_acq(struct vt_window *vw)
2031 {
2032
2033 if (vw->vw_smode.mode != VT_PROCESS)
2034 return (FALSE);
2035 if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
2036 cnavailable(vw->vw_terminal->consdev, FALSE);
2037 if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) {
2038 vw->vw_proc = NULL;
2039 vw->vw_pid = 0;
2040 return (TRUE);
2041 }
2042 vw->vw_flags |= VWF_SWWAIT_ACQ;
2043 PROC_LOCK(vw->vw_proc);
2044 kern_psignal(vw->vw_proc, vw->vw_smode.acqsig);
2045 PROC_UNLOCK(vw->vw_proc);
2046 DPRINTF(1, "sending acqsig to %d\n", vw->vw_pid);
2047 return (TRUE);
2048 }
2049
2050 static int
finish_vt_rel(struct vt_window * vw,int release,int * s)2051 finish_vt_rel(struct vt_window *vw, int release, int *s)
2052 {
2053
2054 if (vw->vw_flags & VWF_SWWAIT_REL) {
2055 vw->vw_flags &= ~VWF_SWWAIT_REL;
2056 if (release) {
2057 callout_drain(&vw->vw_proc_dead_timer);
2058 (void)vt_late_window_switch(vw->vw_switch_to);
2059 }
2060 return (0);
2061 }
2062 return (EINVAL);
2063 }
2064
2065 static int
finish_vt_acq(struct vt_window * vw)2066 finish_vt_acq(struct vt_window *vw)
2067 {
2068
2069 if (vw->vw_flags & VWF_SWWAIT_ACQ) {
2070 vw->vw_flags &= ~VWF_SWWAIT_ACQ;
2071 return (0);
2072 }
2073 return (EINVAL);
2074 }
2075
2076 #ifndef SC_NO_CUTPASTE
2077 static void
vt_mouse_terminput_button(struct vt_device * vd,int button)2078 vt_mouse_terminput_button(struct vt_device *vd, int button)
2079 {
2080 struct vt_window *vw;
2081 struct vt_font *vf;
2082 char mouseb[6] = "\x1B[M";
2083 int i, x, y;
2084
2085 vw = vd->vd_curwindow;
2086 vf = vw->vw_font;
2087
2088 /* Translate to char position. */
2089 x = vd->vd_mx / vf->vf_width;
2090 y = vd->vd_my / vf->vf_height;
2091 /* Avoid overflow. */
2092 x = MIN(x, 255 - '!');
2093 y = MIN(y, 255 - '!');
2094
2095 mouseb[3] = ' ' + button;
2096 mouseb[4] = '!' + x;
2097 mouseb[5] = '!' + y;
2098
2099 for (i = 0; i < sizeof(mouseb); i++)
2100 terminal_input_char(vw->vw_terminal, mouseb[i]);
2101 }
2102
2103 static void
vt_mouse_terminput(struct vt_device * vd,int type,int x,int y,int event,int cnt)2104 vt_mouse_terminput(struct vt_device *vd, int type, int x, int y, int event,
2105 int cnt)
2106 {
2107
2108 switch (type) {
2109 case MOUSE_BUTTON_EVENT:
2110 if (cnt > 0) {
2111 /* Mouse button pressed. */
2112 if (event & MOUSE_BUTTON1DOWN)
2113 vt_mouse_terminput_button(vd, 0);
2114 if (event & MOUSE_BUTTON2DOWN)
2115 vt_mouse_terminput_button(vd, 1);
2116 if (event & MOUSE_BUTTON3DOWN)
2117 vt_mouse_terminput_button(vd, 2);
2118 } else {
2119 /* Mouse button released. */
2120 vt_mouse_terminput_button(vd, 3);
2121 }
2122 break;
2123 #ifdef notyet
2124 case MOUSE_MOTION_EVENT:
2125 if (mouse->u.data.z < 0) {
2126 /* Scroll up. */
2127 sc_mouse_input_button(vd, 64);
2128 } else if (mouse->u.data.z > 0) {
2129 /* Scroll down. */
2130 sc_mouse_input_button(vd, 65);
2131 }
2132 break;
2133 #endif
2134 }
2135 }
2136
2137 static void
vt_mouse_paste()2138 vt_mouse_paste()
2139 {
2140 term_char_t *buf;
2141 int i, len;
2142
2143 len = VD_PASTEBUFLEN(main_vd);
2144 buf = VD_PASTEBUF(main_vd);
2145 len /= sizeof(term_char_t);
2146 for (i = 0; i < len; i++) {
2147 if (buf[i] == '\0')
2148 continue;
2149 terminal_input_char(main_vd->vd_curwindow->vw_terminal,
2150 buf[i]);
2151 }
2152 }
2153
2154 void
vt_mouse_event(int type,int x,int y,int event,int cnt,int mlevel)2155 vt_mouse_event(int type, int x, int y, int event, int cnt, int mlevel)
2156 {
2157 struct vt_device *vd;
2158 struct vt_window *vw;
2159 struct vt_font *vf;
2160 term_pos_t size;
2161 int len, mark;
2162
2163 vd = main_vd;
2164 vw = vd->vd_curwindow;
2165 vf = vw->vw_font;
2166 mark = 0;
2167
2168 if (vw->vw_flags & (VWF_MOUSE_HIDE | VWF_GRAPHICS))
2169 /*
2170 * Either the mouse is disabled, or the window is in
2171 * "graphics mode". The graphics mode is usually set by
2172 * an X server, using the KDSETMODE ioctl.
2173 */
2174 return;
2175
2176 if (vf == NULL) /* Text mode. */
2177 return;
2178
2179 /*
2180 * TODO: add flag about pointer position changed, to not redraw chars
2181 * under mouse pointer when nothing changed.
2182 */
2183
2184 if (vw->vw_mouse_level > 0)
2185 vt_mouse_terminput(vd, type, x, y, event, cnt);
2186
2187 switch (type) {
2188 case MOUSE_ACTION:
2189 case MOUSE_MOTION_EVENT:
2190 /* Movement */
2191 x += vd->vd_mx;
2192 y += vd->vd_my;
2193
2194 vt_termsize(vd, vf, &size);
2195
2196 /* Apply limits. */
2197 x = MAX(x, 0);
2198 y = MAX(y, 0);
2199 x = MIN(x, (size.tp_col * vf->vf_width) - 1);
2200 y = MIN(y, (size.tp_row * vf->vf_height) - 1);
2201
2202 vd->vd_mx = x;
2203 vd->vd_my = y;
2204 if (vd->vd_mstate & MOUSE_BUTTON1DOWN)
2205 vtbuf_set_mark(&vw->vw_buf, VTB_MARK_MOVE,
2206 vd->vd_mx / vf->vf_width,
2207 vd->vd_my / vf->vf_height);
2208
2209 vt_resume_flush_timer(vw, 0);
2210 return; /* Done */
2211 case MOUSE_BUTTON_EVENT:
2212 /* Buttons */
2213 break;
2214 default:
2215 return; /* Done */
2216 }
2217
2218 switch (event) {
2219 case MOUSE_BUTTON1DOWN:
2220 switch (cnt % 4) {
2221 case 0: /* up */
2222 mark = VTB_MARK_END;
2223 break;
2224 case 1: /* single click: start cut operation */
2225 mark = VTB_MARK_START;
2226 break;
2227 case 2: /* double click: cut a word */
2228 mark = VTB_MARK_WORD;
2229 break;
2230 case 3: /* triple click: cut a line */
2231 mark = VTB_MARK_ROW;
2232 break;
2233 }
2234 break;
2235 case VT_MOUSE_PASTEBUTTON:
2236 switch (cnt) {
2237 case 0: /* up */
2238 break;
2239 default:
2240 vt_mouse_paste();
2241 break;
2242 }
2243 return; /* Done */
2244 case VT_MOUSE_EXTENDBUTTON:
2245 switch (cnt) {
2246 case 0: /* up */
2247 if (!(vd->vd_mstate & MOUSE_BUTTON1DOWN))
2248 mark = VTB_MARK_EXTEND;
2249 else
2250 mark = 0;
2251 break;
2252 default:
2253 mark = VTB_MARK_EXTEND;
2254 break;
2255 }
2256 break;
2257 default:
2258 return; /* Done */
2259 }
2260
2261 /* Save buttons state. */
2262 if (cnt > 0)
2263 vd->vd_mstate |= event;
2264 else
2265 vd->vd_mstate &= ~event;
2266
2267 if (vtbuf_set_mark(&vw->vw_buf, mark, vd->vd_mx / vf->vf_width,
2268 vd->vd_my / vf->vf_height) == 1) {
2269 /*
2270 * We have something marked to copy, so update pointer to
2271 * window with selection.
2272 */
2273 vt_resume_flush_timer(vw, 0);
2274
2275 switch (mark) {
2276 case VTB_MARK_END:
2277 case VTB_MARK_WORD:
2278 case VTB_MARK_ROW:
2279 case VTB_MARK_EXTEND:
2280 break;
2281 default:
2282 /* Other types of mark do not require to copy data. */
2283 return;
2284 }
2285
2286 /* Get current selection size in bytes. */
2287 len = vtbuf_get_marked_len(&vw->vw_buf);
2288 if (len <= 0)
2289 return;
2290
2291 /* Reallocate buffer only if old one is too small. */
2292 if (len > VD_PASTEBUFSZ(vd)) {
2293 VD_PASTEBUF(vd) = realloc(VD_PASTEBUF(vd), len, M_VT,
2294 M_WAITOK | M_ZERO);
2295 /* Update buffer size. */
2296 VD_PASTEBUFSZ(vd) = len;
2297 }
2298 /* Request copy/paste buffer data, no more than `len' */
2299 vtbuf_extract_marked(&vw->vw_buf, VD_PASTEBUF(vd),
2300 VD_PASTEBUFSZ(vd));
2301
2302 VD_PASTEBUFLEN(vd) = len;
2303
2304 /* XXX VD_PASTEBUF(vd) have to be freed on shutdown/unload. */
2305 }
2306 }
2307
2308 void
vt_mouse_state(int show)2309 vt_mouse_state(int show)
2310 {
2311 struct vt_device *vd;
2312 struct vt_window *vw;
2313
2314 vd = main_vd;
2315 vw = vd->vd_curwindow;
2316
2317 switch (show) {
2318 case VT_MOUSE_HIDE:
2319 vw->vw_flags |= VWF_MOUSE_HIDE;
2320 break;
2321 case VT_MOUSE_SHOW:
2322 vw->vw_flags &= ~VWF_MOUSE_HIDE;
2323 break;
2324 }
2325
2326 /* Mark mouse position as dirty. */
2327 vt_mark_mouse_position_as_dirty(vd, false);
2328 vt_resume_flush_timer(vw, 0);
2329 }
2330 #endif
2331
2332 static int
vtterm_mmap(struct terminal * tm,vm_ooffset_t offset,vm_paddr_t * paddr,int nprot,vm_memattr_t * memattr)2333 vtterm_mmap(struct terminal *tm, vm_ooffset_t offset, vm_paddr_t * paddr,
2334 int nprot, vm_memattr_t *memattr)
2335 {
2336 struct vt_window *vw = tm->tm_softc;
2337 struct vt_device *vd = vw->vw_device;
2338
2339 if (vd->vd_driver->vd_fb_mmap)
2340 return (vd->vd_driver->vd_fb_mmap(vd, offset, paddr, nprot,
2341 memattr));
2342
2343 return (ENXIO);
2344 }
2345
2346 static int
vtterm_ioctl(struct terminal * tm,u_long cmd,caddr_t data,struct thread * td)2347 vtterm_ioctl(struct terminal *tm, u_long cmd, caddr_t data,
2348 struct thread *td)
2349 {
2350 struct vt_window *vw = tm->tm_softc;
2351 struct vt_device *vd = vw->vw_device;
2352 keyboard_t *kbd;
2353 int error, i, s;
2354 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
2355 defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
2356 int ival;
2357
2358 switch (cmd) {
2359 case _IO('v', 4):
2360 cmd = VT_RELDISP;
2361 break;
2362 case _IO('v', 5):
2363 cmd = VT_ACTIVATE;
2364 break;
2365 case _IO('v', 6):
2366 cmd = VT_WAITACTIVE;
2367 break;
2368 case _IO('K', 20):
2369 cmd = KDSKBSTATE;
2370 break;
2371 case _IO('K', 67):
2372 cmd = KDSETRAD;
2373 break;
2374 case _IO('K', 7):
2375 cmd = KDSKBMODE;
2376 break;
2377 case _IO('K', 8):
2378 cmd = KDMKTONE;
2379 break;
2380 case _IO('K', 10):
2381 cmd = KDSETMODE;
2382 break;
2383 case _IO('K', 13):
2384 cmd = KDSBORDER;
2385 break;
2386 case _IO('K', 63):
2387 cmd = KIOCSOUND;
2388 break;
2389 case _IO('K', 66):
2390 cmd = KDSETLED;
2391 break;
2392 case _IO('c', 104):
2393 cmd = CONS_SETWINORG;
2394 break;
2395 case _IO('c', 110):
2396 cmd = CONS_SETKBD;
2397 break;
2398 default:
2399 goto skip_thunk;
2400 }
2401 ival = IOCPARM_IVAL(data);
2402 data = (caddr_t)&ival;
2403 skip_thunk:
2404 #endif
2405
2406 switch (cmd) {
2407 case KDSETRAD: /* set keyboard repeat & delay rates (old) */
2408 if (*(int *)data & ~0x7f)
2409 return (EINVAL);
2410 /* FALLTHROUGH */
2411 case GIO_KEYMAP:
2412 case PIO_KEYMAP:
2413 case GIO_DEADKEYMAP:
2414 case PIO_DEADKEYMAP:
2415 case GETFKEY:
2416 case SETFKEY:
2417 case KDGKBINFO:
2418 case KDGKBTYPE:
2419 case KDGETREPEAT: /* get keyboard repeat & delay rates */
2420 case KDSETREPEAT: /* set keyboard repeat & delay rates (new) */
2421 case KBADDKBD: /* add/remove keyboard to/from mux */
2422 case KBRELKBD: {
2423 error = 0;
2424
2425 mtx_lock(&Giant);
2426 if ((kbd = vd->vd_keyboard) != NULL)
2427 error = kbdd_ioctl(kbd, cmd, data);
2428 mtx_unlock(&Giant);
2429 if (error == ENOIOCTL) {
2430 if (cmd == KDGKBTYPE) {
2431 /* always return something? XXX */
2432 *(int *)data = 0;
2433 } else {
2434 return (ENODEV);
2435 }
2436 }
2437 return (error);
2438 }
2439 case KDGKBSTATE: { /* get keyboard state (locks) */
2440 error = 0;
2441
2442 if (vw == vd->vd_curwindow) {
2443 mtx_lock(&Giant);
2444 if ((kbd = vd->vd_keyboard) != NULL)
2445 error = vt_save_kbd_state(vw, kbd);
2446 mtx_unlock(&Giant);
2447
2448 if (error != 0)
2449 return (error);
2450 }
2451
2452 *(int *)data = vw->vw_kbdstate & LOCK_MASK;
2453
2454 return (error);
2455 }
2456 case KDSKBSTATE: { /* set keyboard state (locks) */
2457 int state;
2458
2459 state = *(int *)data;
2460 if (state & ~LOCK_MASK)
2461 return (EINVAL);
2462
2463 vw->vw_kbdstate &= ~LOCK_MASK;
2464 vw->vw_kbdstate |= state;
2465
2466 error = 0;
2467 if (vw == vd->vd_curwindow) {
2468 mtx_lock(&Giant);
2469 if ((kbd = vd->vd_keyboard) != NULL)
2470 error = vt_update_kbd_state(vw, kbd);
2471 mtx_unlock(&Giant);
2472 }
2473
2474 return (error);
2475 }
2476 case KDGETLED: { /* get keyboard LED status */
2477 error = 0;
2478
2479 if (vw == vd->vd_curwindow) {
2480 mtx_lock(&Giant);
2481 if ((kbd = vd->vd_keyboard) != NULL)
2482 error = vt_save_kbd_leds(vw, kbd);
2483 mtx_unlock(&Giant);
2484
2485 if (error != 0)
2486 return (error);
2487 }
2488
2489 *(int *)data = vw->vw_kbdstate & LED_MASK;
2490
2491 return (error);
2492 }
2493 case KDSETLED: { /* set keyboard LED status */
2494 int leds;
2495
2496 leds = *(int *)data;
2497 if (leds & ~LED_MASK)
2498 return (EINVAL);
2499
2500 vw->vw_kbdstate &= ~LED_MASK;
2501 vw->vw_kbdstate |= leds;
2502
2503 error = 0;
2504 if (vw == vd->vd_curwindow) {
2505 mtx_lock(&Giant);
2506 if ((kbd = vd->vd_keyboard) != NULL)
2507 error = vt_update_kbd_leds(vw, kbd);
2508 mtx_unlock(&Giant);
2509 }
2510
2511 return (error);
2512 }
2513 case KDGETMODE:
2514 *(int *)data = (vw->vw_flags & VWF_GRAPHICS) ?
2515 KD_GRAPHICS : KD_TEXT;
2516 return (0);
2517 case KDGKBMODE: {
2518 error = 0;
2519
2520 if (vw == vd->vd_curwindow) {
2521 mtx_lock(&Giant);
2522 if ((kbd = vd->vd_keyboard) != NULL)
2523 error = vt_save_kbd_mode(vw, kbd);
2524 mtx_unlock(&Giant);
2525
2526 if (error != 0)
2527 return (error);
2528 }
2529
2530 *(int *)data = vw->vw_kbdmode;
2531
2532 return (error);
2533 }
2534 case KDSKBMODE: {
2535 int mode;
2536
2537 mode = *(int *)data;
2538 switch (mode) {
2539 case K_XLATE:
2540 case K_RAW:
2541 case K_CODE:
2542 vw->vw_kbdmode = mode;
2543
2544 error = 0;
2545 if (vw == vd->vd_curwindow) {
2546 mtx_lock(&Giant);
2547 if ((kbd = vd->vd_keyboard) != NULL)
2548 error = vt_update_kbd_mode(vw, kbd);
2549 mtx_unlock(&Giant);
2550 }
2551
2552 return (error);
2553 default:
2554 return (EINVAL);
2555 }
2556 }
2557 case FBIOGTYPE:
2558 case FBIO_GETWINORG: /* get frame buffer window origin */
2559 case FBIO_GETDISPSTART: /* get display start address */
2560 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
2561 case FBIO_BLANK: /* blank display */
2562 if (vd->vd_driver->vd_fb_ioctl)
2563 return (vd->vd_driver->vd_fb_ioctl(vd, cmd, data, td));
2564 break;
2565 case CONS_BLANKTIME:
2566 /* XXX */
2567 return (0);
2568 case CONS_HISTORY:
2569 if (*(int *)data < 0)
2570 return EINVAL;
2571 if (*(int *)data != vw->vw_buf.vb_history_size)
2572 vtbuf_sethistory_size(&vw->vw_buf, *(int *)data);
2573 return (0);
2574 case CONS_CLRHIST:
2575 vtbuf_clearhistory(&vw->vw_buf);
2576 /*
2577 * Invalidate the entire visible window; it is not guaranteed
2578 * that this operation will be immediately followed by a scroll
2579 * event, so it would otherwise be possible for prior artifacts
2580 * to remain visible.
2581 */
2582 VT_LOCK(vd);
2583 if (vw == vd->vd_curwindow) {
2584 vd->vd_flags |= VDF_INVALID;
2585 vt_resume_flush_timer(vw, 0);
2586 }
2587 VT_UNLOCK(vd);
2588 return (0);
2589 case CONS_GET:
2590 /* XXX */
2591 *(int *)data = M_CG640x480;
2592 return (0);
2593 case CONS_BELLTYPE: /* set bell type sound */
2594 if ((*(int *)data) & CONS_QUIET_BELL)
2595 vd->vd_flags |= VDF_QUIET_BELL;
2596 else
2597 vd->vd_flags &= ~VDF_QUIET_BELL;
2598 return (0);
2599 case CONS_GETINFO: {
2600 vid_info_t *vi = (vid_info_t *)data;
2601 if (vi->size != sizeof(struct vid_info))
2602 return (EINVAL);
2603
2604 if (vw == vd->vd_curwindow) {
2605 mtx_lock(&Giant);
2606 if ((kbd = vd->vd_keyboard) != NULL)
2607 vt_save_kbd_state(vw, kbd);
2608 mtx_unlock(&Giant);
2609 }
2610
2611 vi->m_num = vd->vd_curwindow->vw_number + 1;
2612 vi->mk_keylock = vw->vw_kbdstate & LOCK_MASK;
2613 /* XXX: other fields! */
2614 return (0);
2615 }
2616 case CONS_GETVERS:
2617 *(int *)data = 0x200;
2618 return (0);
2619 case CONS_MODEINFO:
2620 /* XXX */
2621 return (0);
2622 case CONS_MOUSECTL: {
2623 mouse_info_t *mouse = (mouse_info_t*)data;
2624
2625 /*
2626 * All the commands except MOUSE_SHOW nd MOUSE_HIDE
2627 * should not be applied to individual TTYs, but only to
2628 * consolectl.
2629 */
2630 switch (mouse->operation) {
2631 case MOUSE_HIDE:
2632 if (vd->vd_flags & VDF_MOUSECURSOR) {
2633 vd->vd_flags &= ~VDF_MOUSECURSOR;
2634 #ifndef SC_NO_CUTPASTE
2635 vt_mouse_state(VT_MOUSE_HIDE);
2636 #endif
2637 }
2638 return (0);
2639 case MOUSE_SHOW:
2640 if (!(vd->vd_flags & VDF_MOUSECURSOR)) {
2641 vd->vd_flags |= VDF_MOUSECURSOR;
2642 vd->vd_mx = vd->vd_width / 2;
2643 vd->vd_my = vd->vd_height / 2;
2644 #ifndef SC_NO_CUTPASTE
2645 vt_mouse_state(VT_MOUSE_SHOW);
2646 #endif
2647 }
2648 return (0);
2649 default:
2650 return (EINVAL);
2651 }
2652 }
2653 case PIO_VFONT: {
2654 struct vt_font *vf;
2655
2656 if (vd->vd_flags & VDF_TEXTMODE)
2657 return (ENOTSUP);
2658
2659 error = vtfont_load((void *)data, &vf);
2660 if (error != 0)
2661 return (error);
2662
2663 error = vt_change_font(vw, vf);
2664 vtfont_unref(vf);
2665 return (error);
2666 }
2667 case PIO_VFONT_DEFAULT: {
2668 /* Reset to default font. */
2669 error = vt_change_font(vw, vt_font_assigned);
2670 return (error);
2671 }
2672 case GIO_SCRNMAP: {
2673 scrmap_t *sm = (scrmap_t *)data;
2674
2675 /* We don't have screen maps, so return a handcrafted one. */
2676 for (i = 0; i < 256; i++)
2677 sm->scrmap[i] = i;
2678 return (0);
2679 }
2680 case KDSETMODE:
2681 /*
2682 * FIXME: This implementation is incomplete compared to
2683 * syscons.
2684 */
2685 switch (*(int *)data) {
2686 case KD_TEXT:
2687 case KD_TEXT1:
2688 case KD_PIXEL:
2689 vw->vw_flags &= ~VWF_GRAPHICS;
2690 break;
2691 case KD_GRAPHICS:
2692 vw->vw_flags |= VWF_GRAPHICS;
2693 break;
2694 }
2695 return (0);
2696 case KDENABIO: /* allow io operations */
2697 error = priv_check(td, PRIV_IO);
2698 if (error != 0)
2699 return (error);
2700 error = securelevel_gt(td->td_ucred, 0);
2701 if (error != 0)
2702 return (error);
2703 #if defined(__i386__)
2704 td->td_frame->tf_eflags |= PSL_IOPL;
2705 #elif defined(__amd64__)
2706 td->td_frame->tf_rflags |= PSL_IOPL;
2707 #endif
2708 return (0);
2709 case KDDISABIO: /* disallow io operations (default) */
2710 #if defined(__i386__)
2711 td->td_frame->tf_eflags &= ~PSL_IOPL;
2712 #elif defined(__amd64__)
2713 td->td_frame->tf_rflags &= ~PSL_IOPL;
2714 #endif
2715 return (0);
2716 case KDMKTONE: /* sound the bell */
2717 vtterm_beep(tm, *(u_int *)data);
2718 return (0);
2719 case KIOCSOUND: /* make tone (*data) hz */
2720 /* TODO */
2721 return (0);
2722 case CONS_SETKBD: /* set the new keyboard */
2723 mtx_lock(&Giant);
2724 error = 0;
2725 if (vd->vd_keyboard == NULL ||
2726 vd->vd_keyboard->kb_index != *(int *)data) {
2727 kbd = kbd_get_keyboard(*(int *)data);
2728 if (kbd == NULL) {
2729 mtx_unlock(&Giant);
2730 return (EINVAL);
2731 }
2732 i = kbd_allocate(kbd->kb_name, kbd->kb_unit,
2733 (void *)vd, vt_kbdevent, vd);
2734 if (i >= 0) {
2735 if ((kbd = vd->vd_keyboard) != NULL) {
2736 vt_save_kbd_state(vd->vd_curwindow, kbd);
2737 kbd_release(kbd, (void *)vd);
2738 }
2739 kbd = vd->vd_keyboard = kbd_get_keyboard(i);
2740
2741 vt_update_kbd_mode(vd->vd_curwindow, kbd);
2742 vt_update_kbd_state(vd->vd_curwindow, kbd);
2743 } else {
2744 error = EPERM; /* XXX */
2745 }
2746 }
2747 mtx_unlock(&Giant);
2748 return (error);
2749 case CONS_RELKBD: /* release the current keyboard */
2750 mtx_lock(&Giant);
2751 error = 0;
2752 if ((kbd = vd->vd_keyboard) != NULL) {
2753 vt_save_kbd_state(vd->vd_curwindow, kbd);
2754 error = kbd_release(kbd, (void *)vd);
2755 if (error == 0) {
2756 vd->vd_keyboard = NULL;
2757 }
2758 }
2759 mtx_unlock(&Giant);
2760 return (error);
2761 case VT_ACTIVATE: {
2762 int win;
2763 win = *(int *)data - 1;
2764 DPRINTF(5, "%s%d: VT_ACTIVATE ttyv%d ", SC_DRIVER_NAME,
2765 VT_UNIT(vw), win);
2766 if ((win >= VT_MAXWINDOWS) || (win < 0))
2767 return (EINVAL);
2768 return (vt_proc_window_switch(vd->vd_windows[win]));
2769 }
2770 case VT_GETACTIVE:
2771 *(int *)data = vd->vd_curwindow->vw_number + 1;
2772 return (0);
2773 case VT_GETINDEX:
2774 *(int *)data = vw->vw_number + 1;
2775 return (0);
2776 case VT_LOCKSWITCH:
2777 /* TODO: Check current state, switching can be in progress. */
2778 if ((*(int *)data) == 0x01)
2779 vw->vw_flags |= VWF_VTYLOCK;
2780 else if ((*(int *)data) == 0x02)
2781 vw->vw_flags &= ~VWF_VTYLOCK;
2782 else
2783 return (EINVAL);
2784 return (0);
2785 case VT_OPENQRY:
2786 VT_LOCK(vd);
2787 for (i = 0; i < VT_MAXWINDOWS; i++) {
2788 vw = vd->vd_windows[i];
2789 if (vw == NULL)
2790 continue;
2791 if (!(vw->vw_flags & VWF_OPENED)) {
2792 *(int *)data = vw->vw_number + 1;
2793 VT_UNLOCK(vd);
2794 return (0);
2795 }
2796 }
2797 VT_UNLOCK(vd);
2798 return (EINVAL);
2799 case VT_WAITACTIVE: {
2800 unsigned int idx;
2801
2802 error = 0;
2803
2804 idx = *(unsigned int *)data;
2805 if (idx > VT_MAXWINDOWS)
2806 return (EINVAL);
2807 if (idx > 0)
2808 vw = vd->vd_windows[idx - 1];
2809
2810 VT_LOCK(vd);
2811 while (vd->vd_curwindow != vw && error == 0)
2812 error = cv_wait_sig(&vd->vd_winswitch, &vd->vd_lock);
2813 VT_UNLOCK(vd);
2814 return (error);
2815 }
2816 case VT_SETMODE: { /* set screen switcher mode */
2817 struct vt_mode *mode;
2818 struct proc *p1;
2819
2820 mode = (struct vt_mode *)data;
2821 DPRINTF(5, "%s%d: VT_SETMODE ", SC_DRIVER_NAME, VT_UNIT(vw));
2822 if (vw->vw_smode.mode == VT_PROCESS) {
2823 p1 = pfind(vw->vw_pid);
2824 if (vw->vw_proc == p1 && vw->vw_proc != td->td_proc) {
2825 if (p1)
2826 PROC_UNLOCK(p1);
2827 DPRINTF(5, "error EPERM\n");
2828 return (EPERM);
2829 }
2830 if (p1)
2831 PROC_UNLOCK(p1);
2832 }
2833 if (mode->mode == VT_AUTO) {
2834 vw->vw_smode.mode = VT_AUTO;
2835 vw->vw_proc = NULL;
2836 vw->vw_pid = 0;
2837 DPRINTF(5, "VT_AUTO, ");
2838 if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
2839 cnavailable(vw->vw_terminal->consdev, TRUE);
2840 /* were we in the middle of the vty switching process? */
2841 if (finish_vt_rel(vw, TRUE, &s) == 0)
2842 DPRINTF(5, "reset WAIT_REL, ");
2843 if (finish_vt_acq(vw) == 0)
2844 DPRINTF(5, "reset WAIT_ACQ, ");
2845 return (0);
2846 } else if (mode->mode == VT_PROCESS) {
2847 if (!ISSIGVALID(mode->relsig) ||
2848 !ISSIGVALID(mode->acqsig) ||
2849 !ISSIGVALID(mode->frsig)) {
2850 DPRINTF(5, "error EINVAL\n");
2851 return (EINVAL);
2852 }
2853 DPRINTF(5, "VT_PROCESS %d, ", td->td_proc->p_pid);
2854 bcopy(data, &vw->vw_smode, sizeof(struct vt_mode));
2855 vw->vw_proc = td->td_proc;
2856 vw->vw_pid = vw->vw_proc->p_pid;
2857 if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
2858 cnavailable(vw->vw_terminal->consdev, FALSE);
2859 } else {
2860 DPRINTF(5, "VT_SETMODE failed, unknown mode %d\n",
2861 mode->mode);
2862 return (EINVAL);
2863 }
2864 DPRINTF(5, "\n");
2865 return (0);
2866 }
2867 case VT_GETMODE: /* get screen switcher mode */
2868 bcopy(&vw->vw_smode, data, sizeof(struct vt_mode));
2869 return (0);
2870
2871 case VT_RELDISP: /* screen switcher ioctl */
2872 /*
2873 * This must be the current vty which is in the VT_PROCESS
2874 * switching mode...
2875 */
2876 if ((vw != vd->vd_curwindow) || (vw->vw_smode.mode !=
2877 VT_PROCESS)) {
2878 return (EINVAL);
2879 }
2880 /* ...and this process is controlling it. */
2881 if (vw->vw_proc != td->td_proc) {
2882 return (EPERM);
2883 }
2884 error = EINVAL;
2885 switch(*(int *)data) {
2886 case VT_FALSE: /* user refuses to release screen, abort */
2887 if ((error = finish_vt_rel(vw, FALSE, &s)) == 0)
2888 DPRINTF(5, "%s%d: VT_RELDISP: VT_FALSE\n",
2889 SC_DRIVER_NAME, VT_UNIT(vw));
2890 break;
2891 case VT_TRUE: /* user has released screen, go on */
2892 /* finish_vt_rel(..., TRUE, ...) should not be locked */
2893 if (vw->vw_flags & VWF_SWWAIT_REL) {
2894 if ((error = finish_vt_rel(vw, TRUE, &s)) == 0)
2895 DPRINTF(5, "%s%d: VT_RELDISP: VT_TRUE\n",
2896 SC_DRIVER_NAME, VT_UNIT(vw));
2897 } else {
2898 error = EINVAL;
2899 }
2900 return (error);
2901 case VT_ACKACQ: /* acquire acknowledged, switch completed */
2902 if ((error = finish_vt_acq(vw)) == 0)
2903 DPRINTF(5, "%s%d: VT_RELDISP: VT_ACKACQ\n",
2904 SC_DRIVER_NAME, VT_UNIT(vw));
2905 break;
2906 default:
2907 break;
2908 }
2909 return (error);
2910 }
2911
2912 return (ENOIOCTL);
2913 }
2914
2915 static struct vt_window *
vt_allocate_window(struct vt_device * vd,unsigned int window)2916 vt_allocate_window(struct vt_device *vd, unsigned int window)
2917 {
2918 struct vt_window *vw;
2919 struct terminal *tm;
2920 term_pos_t size;
2921 struct winsize wsz;
2922
2923 vw = malloc(sizeof *vw, M_VT, M_WAITOK|M_ZERO);
2924 vw->vw_device = vd;
2925 vw->vw_number = window;
2926 vw->vw_kbdmode = K_XLATE;
2927
2928 if ((vd->vd_flags & VDF_TEXTMODE) == 0) {
2929 vw->vw_font = vtfont_ref(vt_font_assigned);
2930 vt_compute_drawable_area(vw);
2931 }
2932
2933 vt_termsize(vd, vw->vw_font, &size);
2934 vt_winsize(vd, vw->vw_font, &wsz);
2935 tm = vw->vw_terminal = terminal_alloc(&vt_termclass, vw);
2936 vw->vw_buf.vb_terminal = tm; /* must be set before vtbuf_init() */
2937 vtbuf_init(&vw->vw_buf, &size);
2938
2939 terminal_set_winsize(tm, &wsz);
2940 vd->vd_windows[window] = vw;
2941 callout_init(&vw->vw_proc_dead_timer, 1);
2942
2943 return (vw);
2944 }
2945
2946 void
vt_upgrade(struct vt_device * vd)2947 vt_upgrade(struct vt_device *vd)
2948 {
2949 struct vt_window *vw;
2950 unsigned int i;
2951 int register_handlers;
2952
2953 if (!vty_enabled(VTY_VT))
2954 return;
2955 if (main_vd->vd_driver == NULL)
2956 return;
2957
2958 for (i = 0; i < VT_MAXWINDOWS; i++) {
2959 vw = vd->vd_windows[i];
2960 if (vw == NULL) {
2961 /* New window. */
2962 vw = vt_allocate_window(vd, i);
2963 }
2964 if (!(vw->vw_flags & VWF_READY)) {
2965 callout_init(&vw->vw_proc_dead_timer, 1);
2966 terminal_maketty(vw->vw_terminal, "v%r", VT_UNIT(vw));
2967 vw->vw_flags |= VWF_READY;
2968 if (vw->vw_flags & VWF_CONSOLE) {
2969 /* For existing console window. */
2970 EVENTHANDLER_REGISTER(shutdown_pre_sync,
2971 vt_window_switch, vw, SHUTDOWN_PRI_DEFAULT);
2972 }
2973 }
2974 }
2975 VT_LOCK(vd);
2976 if (vd->vd_curwindow == NULL)
2977 vd->vd_curwindow = vd->vd_windows[VT_CONSWINDOW];
2978
2979 register_handlers = 0;
2980 if (!(vd->vd_flags & VDF_ASYNC)) {
2981 /* Attach keyboard. */
2982 vt_allocate_keyboard(vd);
2983
2984 /* Init 25 Hz timer. */
2985 callout_init_mtx(&vd->vd_timer, &vd->vd_lock, 0);
2986
2987 /*
2988 * Start timer when everything ready.
2989 * Note that the operations here are purposefully ordered.
2990 * We need to ensure vd_timer_armed is non-zero before we set
2991 * the VDF_ASYNC flag. That prevents this function from
2992 * racing with vt_resume_flush_timer() to update the
2993 * callout structure.
2994 */
2995 atomic_add_acq_int(&vd->vd_timer_armed, 1);
2996 vd->vd_flags |= VDF_ASYNC;
2997 callout_reset(&vd->vd_timer, hz / VT_TIMERFREQ, vt_timer, vd);
2998 register_handlers = 1;
2999 }
3000
3001 VT_UNLOCK(vd);
3002
3003 /* Refill settings with new sizes. */
3004 vt_resize(vd);
3005
3006 if (register_handlers) {
3007 /* Register suspend/resume handlers. */
3008 EVENTHANDLER_REGISTER(power_suspend_early, vt_suspend_handler,
3009 vd, EVENTHANDLER_PRI_ANY);
3010 EVENTHANDLER_REGISTER(power_resume, vt_resume_handler, vd,
3011 EVENTHANDLER_PRI_ANY);
3012 }
3013 }
3014
3015 static void
vt_resize(struct vt_device * vd)3016 vt_resize(struct vt_device *vd)
3017 {
3018 struct vt_window *vw;
3019 int i;
3020
3021 for (i = 0; i < VT_MAXWINDOWS; i++) {
3022 vw = vd->vd_windows[i];
3023 VT_LOCK(vd);
3024 /* Assign default font to window, if not textmode. */
3025 if (!(vd->vd_flags & VDF_TEXTMODE) && vw->vw_font == NULL)
3026 vw->vw_font = vtfont_ref(vt_font_assigned);
3027 VT_UNLOCK(vd);
3028
3029 /* Resize terminal windows */
3030 while (vt_change_font(vw, vw->vw_font) == EBUSY) {
3031 DPRINTF(100, "%s: vt_change_font() is busy, "
3032 "window %d\n", __func__, i);
3033 }
3034 }
3035 }
3036
3037 static void
vt_replace_backend(const struct vt_driver * drv,void * softc)3038 vt_replace_backend(const struct vt_driver *drv, void *softc)
3039 {
3040 struct vt_device *vd;
3041
3042 vd = main_vd;
3043
3044 if (vd->vd_flags & VDF_ASYNC) {
3045 /* Stop vt_flush periodic task. */
3046 VT_LOCK(vd);
3047 vt_suspend_flush_timer(vd);
3048 VT_UNLOCK(vd);
3049 /*
3050 * Mute current terminal until we done. vt_change_font (called
3051 * from vt_resize) will unmute it.
3052 */
3053 terminal_mute(vd->vd_curwindow->vw_terminal, 1);
3054 }
3055
3056 /*
3057 * Reset VDF_TEXTMODE flag, driver who require that flag (vt_vga) will
3058 * set it.
3059 */
3060 VT_LOCK(vd);
3061 vd->vd_flags &= ~VDF_TEXTMODE;
3062
3063 if (drv != NULL) {
3064 /*
3065 * We want to upgrade from the current driver to the
3066 * given driver.
3067 */
3068
3069 vd->vd_prev_driver = vd->vd_driver;
3070 vd->vd_prev_softc = vd->vd_softc;
3071 vd->vd_driver = drv;
3072 vd->vd_softc = softc;
3073
3074 vd->vd_driver->vd_init(vd);
3075 } else if (vd->vd_prev_driver != NULL && vd->vd_prev_softc != NULL) {
3076 /*
3077 * No driver given: we want to downgrade to the previous
3078 * driver.
3079 */
3080 const struct vt_driver *old_drv;
3081 void *old_softc;
3082
3083 old_drv = vd->vd_driver;
3084 old_softc = vd->vd_softc;
3085
3086 vd->vd_driver = vd->vd_prev_driver;
3087 vd->vd_softc = vd->vd_prev_softc;
3088 vd->vd_prev_driver = NULL;
3089 vd->vd_prev_softc = NULL;
3090
3091 vd->vd_flags |= VDF_DOWNGRADE;
3092
3093 vd->vd_driver->vd_init(vd);
3094
3095 if (old_drv->vd_fini)
3096 old_drv->vd_fini(vd, old_softc);
3097
3098 vd->vd_flags &= ~VDF_DOWNGRADE;
3099 }
3100
3101 VT_UNLOCK(vd);
3102
3103 /* Update windows sizes and initialize last items. */
3104 vt_upgrade(vd);
3105
3106 #ifdef DEV_SPLASH
3107 if (vd->vd_flags & VDF_SPLASH)
3108 vtterm_splash(vd);
3109 #endif
3110
3111 if (vd->vd_flags & VDF_ASYNC) {
3112 /* Allow to put chars now. */
3113 terminal_mute(vd->vd_curwindow->vw_terminal, 0);
3114 /* Rerun timer for screen updates. */
3115 vt_resume_flush_timer(vd->vd_curwindow, 0);
3116 }
3117
3118 /*
3119 * Register as console. If it already registered, cnadd() will ignore
3120 * it.
3121 */
3122 termcn_cnregister(vd->vd_windows[VT_CONSWINDOW]->vw_terminal);
3123 }
3124
3125 static void
vt_suspend_handler(void * priv)3126 vt_suspend_handler(void *priv)
3127 {
3128 struct vt_device *vd;
3129
3130 vd = priv;
3131 vd->vd_flags |= VDF_SUSPENDED;
3132 if (vd->vd_driver != NULL && vd->vd_driver->vd_suspend != NULL)
3133 vd->vd_driver->vd_suspend(vd);
3134 }
3135
3136 static void
vt_resume_handler(void * priv)3137 vt_resume_handler(void *priv)
3138 {
3139 struct vt_device *vd;
3140
3141 vd = priv;
3142 if (vd->vd_driver != NULL && vd->vd_driver->vd_resume != NULL)
3143 vd->vd_driver->vd_resume(vd);
3144 vd->vd_flags &= ~VDF_SUSPENDED;
3145 }
3146
3147 void
vt_allocate(const struct vt_driver * drv,void * softc)3148 vt_allocate(const struct vt_driver *drv, void *softc)
3149 {
3150
3151 if (!vty_enabled(VTY_VT))
3152 return;
3153
3154 if (main_vd->vd_driver == NULL) {
3155 main_vd->vd_driver = drv;
3156 printf("VT: initialize with new VT driver \"%s\".\n",
3157 drv->vd_name);
3158 } else {
3159 /*
3160 * Check if have rights to replace current driver. For example:
3161 * it is bad idea to replace KMS driver with generic VGA one.
3162 */
3163 if (drv->vd_priority <= main_vd->vd_driver->vd_priority) {
3164 printf("VT: Driver priority %d too low. Current %d\n ",
3165 drv->vd_priority, main_vd->vd_driver->vd_priority);
3166 return;
3167 }
3168 printf("VT: Replacing driver \"%s\" with new \"%s\".\n",
3169 main_vd->vd_driver->vd_name, drv->vd_name);
3170 }
3171
3172 vt_replace_backend(drv, softc);
3173 }
3174
3175 void
vt_deallocate(const struct vt_driver * drv,void * softc)3176 vt_deallocate(const struct vt_driver *drv, void *softc)
3177 {
3178
3179 if (!vty_enabled(VTY_VT))
3180 return;
3181
3182 if (main_vd->vd_prev_driver == NULL ||
3183 main_vd->vd_driver != drv ||
3184 main_vd->vd_softc != softc)
3185 return;
3186
3187 printf("VT: Switching back from \"%s\" to \"%s\".\n",
3188 main_vd->vd_driver->vd_name, main_vd->vd_prev_driver->vd_name);
3189
3190 vt_replace_backend(NULL, NULL);
3191 }
3192
3193 void
vt_suspend(struct vt_device * vd)3194 vt_suspend(struct vt_device *vd)
3195 {
3196 int error;
3197
3198 if (vt_suspendswitch == 0)
3199 return;
3200 /* Save current window. */
3201 vd->vd_savedwindow = vd->vd_curwindow;
3202 /* Ask holding process to free window and switch to console window */
3203 vt_proc_window_switch(vd->vd_windows[VT_CONSWINDOW]);
3204
3205 /* Wait for the window switch to complete. */
3206 error = 0;
3207 VT_LOCK(vd);
3208 while (vd->vd_curwindow != vd->vd_windows[VT_CONSWINDOW] && error == 0)
3209 error = cv_wait_sig(&vd->vd_winswitch, &vd->vd_lock);
3210 VT_UNLOCK(vd);
3211 }
3212
3213 void
vt_resume(struct vt_device * vd)3214 vt_resume(struct vt_device *vd)
3215 {
3216
3217 if (vt_suspendswitch == 0)
3218 return;
3219 /* Switch back to saved window, if any */
3220 vt_proc_window_switch(vd->vd_savedwindow);
3221 vd->vd_savedwindow = NULL;
3222 }
3223