vt_core.c revision 279265
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: releng/9.3/sys/dev/vt/vt_core.c 279265 2015-02-25 05:56:54Z delphij $"); 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 62static tc_bell_t vtterm_bell; 63static tc_cursor_t vtterm_cursor; 64static tc_putchar_t vtterm_putchar; 65static tc_fill_t vtterm_fill; 66static tc_copy_t vtterm_copy; 67static tc_param_t vtterm_param; 68static tc_done_t vtterm_done; 69 70static tc_cnprobe_t vtterm_cnprobe; 71static tc_cngetc_t vtterm_cngetc; 72 73static tc_opened_t vtterm_opened; 74static tc_ioctl_t vtterm_ioctl; 75static tc_mmap_t vtterm_mmap; 76 77const 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. */ 115int sc_txtmouse_no_retrace_wait; 116 117static SYSCTL_NODE(_kern, OID_AUTO, vt, CTLFLAG_RD, 0, "vt(9) parameters"); 118VT_SYSCTL_INT(enable_altgr, 1, "Enable AltGr key (Do not assume R.Alt as Alt)"); 119VT_SYSCTL_INT(debug, 0, "vt(9) debug level"); 120VT_SYSCTL_INT(deadtimer, 15, "Time to wait busy process in VT_PROCESS mode"); 121VT_SYSCTL_INT(suspendswitch, 1, "Switch to VT0 before suspend"); 122 123static unsigned int vt_unit = 0; 124static MALLOC_DEFINE(M_VT, "vt", "vt device"); 125struct vt_device *main_vd = NULL; 126 127/* Boot logo. */ 128extern unsigned int vt_logo_width; 129extern unsigned int vt_logo_height; 130extern unsigned int vt_logo_depth; 131extern unsigned char vt_logo_image[]; 132 133/* Font. */ 134extern struct vt_font vt_font_default; 135#ifndef SC_NO_CUTPASTE 136extern struct mouse_cursor vt_default_mouse_pointer; 137#endif 138 139static int signal_vt_rel(struct vt_window *); 140static int signal_vt_acq(struct vt_window *); 141static int finish_vt_rel(struct vt_window *, int, int *); 142static int finish_vt_acq(struct vt_window *); 143static int vt_window_switch(struct vt_window *); 144static int vt_late_window_switch(struct vt_window *); 145static int vt_proc_alive(struct vt_window *); 146static void vt_resize(struct vt_device *); 147 148static void 149vt_switch_timer(void *arg) 150{ 151 152 vt_late_window_switch((struct vt_window *)arg); 153} 154 155static int 156vt_window_preswitch(struct vt_window *vw, struct vt_window *curvw) 157{ 158 159 DPRINTF(40, "%s\n", __func__); 160 curvw->vw_switch_to = vw; 161 /* Set timer to allow switch in case when process hang. */ 162 callout_reset(&vw->vw_proc_dead_timer, hz * vt_deadtimer, 163 vt_switch_timer, (void *)vw); 164 /* Notify process about vt switch attempt. */ 165 DPRINTF(30, "%s: Notify process.\n", __func__); 166 signal_vt_rel(curvw); 167 168 return (0); 169} 170 171static int 172vt_window_postswitch(struct vt_window *vw) 173{ 174 175 signal_vt_acq(vw); 176 return (0); 177} 178 179/* vt_late_window_switch will done VT switching for regular case. */ 180static int 181vt_late_window_switch(struct vt_window *vw) 182{ 183 int ret; 184 185 callout_stop(&vw->vw_proc_dead_timer); 186 187 ret = vt_window_switch(vw); 188 if (ret) 189 return (ret); 190 191 /* Notify owner process about terminal availability. */ 192 if (vw->vw_smode.mode == VT_PROCESS) { 193 ret = vt_window_postswitch(vw); 194 } 195 return (ret); 196} 197 198/* Switch window. */ 199static int 200vt_proc_window_switch(struct vt_window *vw) 201{ 202 struct vt_window *curvw; 203 struct vt_device *vd; 204 int ret; 205 206 if (vw->vw_flags & VWF_VTYLOCK) 207 return (EBUSY); 208 209 vd = vw->vw_device; 210 curvw = vd->vd_curwindow; 211 212 /* Ask current process permitions to switch away. */ 213 if (curvw->vw_smode.mode == VT_PROCESS) { 214 DPRINTF(30, "%s: VT_PROCESS ", __func__); 215 if (vt_proc_alive(curvw) == FALSE) { 216 DPRINTF(30, "Dead. Cleaning."); 217 /* Dead */ 218 } else { 219 DPRINTF(30, "%s: Signaling process.\n", __func__); 220 /* Alive, try to ask him. */ 221 ret = vt_window_preswitch(vw, curvw); 222 /* Wait for process answer or timeout. */ 223 return (ret); 224 } 225 DPRINTF(30, "\n"); 226 } 227 228 ret = vt_late_window_switch(vw); 229 return (ret); 230} 231 232/* Switch window ignoring process locking. */ 233static int 234vt_window_switch(struct vt_window *vw) 235{ 236 struct vt_device *vd = vw->vw_device; 237 struct vt_window *curvw = vd->vd_curwindow; 238 keyboard_t *kbd; 239 240 VT_LOCK(vd); 241 if (curvw == vw) { 242 /* Nothing to do. */ 243 VT_UNLOCK(vd); 244 return (0); 245 } 246 if (!(vw->vw_flags & (VWF_OPENED|VWF_CONSOLE))) { 247 VT_UNLOCK(vd); 248 return (EINVAL); 249 } 250 251 vd->vd_curwindow = vw; 252 vd->vd_flags |= VDF_INVALID; 253 cv_broadcast(&vd->vd_winswitch); 254 VT_UNLOCK(vd); 255 256 if (vd->vd_driver->vd_postswitch) 257 vd->vd_driver->vd_postswitch(vd); 258 259 /* Restore per-window keyboard mode. */ 260 mtx_lock(&Giant); 261 kbd = kbd_get_keyboard(vd->vd_keyboard); 262 if (kbd != NULL) { 263 kbdd_ioctl(kbd, KDSKBMODE, (void *)&vw->vw_kbdmode); 264 } 265 mtx_unlock(&Giant); 266 DPRINTF(10, "%s(ttyv%d) done\n", __func__, vw->vw_number); 267 268 return (0); 269} 270 271static inline void 272vt_termsize(struct vt_device *vd, struct vt_font *vf, term_pos_t *size) 273{ 274 275 size->tp_row = vd->vd_height; 276 size->tp_col = vd->vd_width; 277 if (vf != NULL) { 278 size->tp_row /= vf->vf_height; 279 size->tp_col /= vf->vf_width; 280 } 281} 282 283static inline void 284vt_winsize(struct vt_device *vd, struct vt_font *vf, struct winsize *size) 285{ 286 287 size->ws_row = size->ws_ypixel = vd->vd_height; 288 size->ws_col = size->ws_xpixel = vd->vd_width; 289 if (vf != NULL) { 290 size->ws_row /= vf->vf_height; 291 size->ws_col /= vf->vf_width; 292 } 293} 294 295static void 296vt_scroll(struct vt_window *vw, int offset, int whence) 297{ 298 int diff; 299 term_pos_t size; 300 301 if ((vw->vw_flags & VWF_SCROLL) == 0) 302 return; 303 304 vt_termsize(vw->vw_device, vw->vw_font, &size); 305 306 diff = vthistory_seek(&vw->vw_buf, offset, whence); 307 /* 308 * Offset changed, please update Nth lines on sceen. 309 * +N - Nth lines at top; 310 * -N - Nth lines at bottom. 311 */ 312 313 if (diff < -size.tp_row || diff > size.tp_row) { 314 vw->vw_device->vd_flags |= VDF_INVALID; 315 return; 316 } 317 vw->vw_device->vd_flags |= VDF_INVALID; /*XXX*/ 318} 319 320static int 321vt_machine_kbdevent(int c) 322{ 323 324 switch (c) { 325 case SPCLKEY | DBG: 326 kdb_enter(KDB_WHY_BREAK, "manual escape to debugger"); 327 return (1); 328 case SPCLKEY | RBT: 329 /* XXX: Make this configurable! */ 330 shutdown_nice(0); 331 return (1); 332 case SPCLKEY | HALT: 333 shutdown_nice(RB_HALT); 334 return (1); 335 case SPCLKEY | PDWN: 336 shutdown_nice(RB_HALT|RB_POWEROFF); 337 return (1); 338 }; 339 340 return (0); 341} 342 343static void 344vt_scrollmode_kbdevent(struct vt_window *vw, int c, int console) 345{ 346 struct vt_device *vd; 347 term_pos_t size; 348 349 vd = vw->vw_device; 350 /* Only special keys handled in ScrollLock mode */ 351 if ((c & SPCLKEY) == 0) 352 return; 353 354 c &= ~SPCLKEY; 355 356 if (console == 0) { 357 if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) { 358 vw = vd->vd_windows[c - F_SCR]; 359 if (vw != NULL) 360 vt_proc_window_switch(vw); 361 return; 362 } 363 VT_LOCK(vd); 364 } 365 366 switch (c) { 367 case SLK: { 368 /* Turn scrolling off. */ 369 vt_scroll(vw, 0, VHS_END); 370 VTBUF_SLCK_DISABLE(&vw->vw_buf); 371 vw->vw_flags &= ~VWF_SCROLL; 372 break; 373 } 374 case FKEY | F(49): /* Home key. */ 375 vt_scroll(vw, 0, VHS_SET); 376 break; 377 case FKEY | F(50): /* Arrow up. */ 378 vt_scroll(vw, -1, VHS_CUR); 379 break; 380 case FKEY | F(51): /* Page up. */ 381 vt_termsize(vd, vw->vw_font, &size); 382 vt_scroll(vw, -size.tp_row, VHS_CUR); 383 break; 384 case FKEY | F(57): /* End key. */ 385 vt_scroll(vw, 0, VHS_END); 386 break; 387 case FKEY | F(58): /* Arrow down. */ 388 vt_scroll(vw, 1, VHS_CUR); 389 break; 390 case FKEY | F(59): /* Page down. */ 391 vt_termsize(vd, vw->vw_font, &size); 392 vt_scroll(vw, size.tp_row, VHS_CUR); 393 break; 394 } 395 396 if (console == 0) 397 VT_UNLOCK(vd); 398} 399 400static int 401vt_processkey(keyboard_t *kbd, struct vt_device *vd, int c) 402{ 403 struct vt_window *vw = vd->vd_curwindow; 404 int state = 0; 405 406#if VT_ALT_TO_ESC_HACK 407 if (c & RELKEY) { 408 switch (c & ~RELKEY) { 409 case (SPCLKEY | RALT): 410 if (vt_enable_altgr != 0) 411 break; 412 case (SPCLKEY | LALT): 413 vd->vd_kbstate &= ~ALKED; 414 } 415 /* Other keys ignored for RELKEY event. */ 416 return (0); 417 } else { 418 switch (c & ~RELKEY) { 419 case (SPCLKEY | RALT): 420 if (vt_enable_altgr != 0) 421 break; 422 case (SPCLKEY | LALT): 423 vd->vd_kbstate |= ALKED; 424 } 425 } 426#else 427 if (c & RELKEY) 428 /* Other keys ignored for RELKEY event. */ 429 return (0); 430#endif 431 432 if (vt_machine_kbdevent(c)) 433 return (0); 434 435 if (vw->vw_flags & VWF_SCROLL) { 436 vt_scrollmode_kbdevent(vw, c, 0/* Not a console */); 437 /* Scroll mode keys handled, nothing to do more. */ 438 return (0); 439 } 440 441 if (c & SPCLKEY) { 442 c &= ~SPCLKEY; 443 444 if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) { 445 vw = vd->vd_windows[c - F_SCR]; 446 if (vw != NULL) 447 vt_proc_window_switch(vw); 448 return (0); 449 } 450 451 switch (c) { 452 case SLK: { 453 454 kbdd_ioctl(kbd, KDGKBSTATE, (caddr_t)&state); 455 VT_LOCK(vd); 456 if (state & SLKED) { 457 /* Turn scrolling on. */ 458 vw->vw_flags |= VWF_SCROLL; 459 VTBUF_SLCK_ENABLE(&vw->vw_buf); 460 } else { 461 /* Turn scrolling off. */ 462 vw->vw_flags &= ~VWF_SCROLL; 463 VTBUF_SLCK_DISABLE(&vw->vw_buf); 464 vt_scroll(vw, 0, VHS_END); 465 } 466 VT_UNLOCK(vd); 467 break; 468 } 469 case FKEY | F(1): case FKEY | F(2): case FKEY | F(3): 470 case FKEY | F(4): case FKEY | F(5): case FKEY | F(6): 471 case FKEY | F(7): case FKEY | F(8): case FKEY | F(9): 472 case FKEY | F(10): case FKEY | F(11): case FKEY | F(12): 473 /* F1 through F12 keys. */ 474 terminal_input_special(vw->vw_terminal, 475 TKEY_F1 + c - (FKEY | F(1))); 476 break; 477 case FKEY | F(49): /* Home key. */ 478 terminal_input_special(vw->vw_terminal, TKEY_HOME); 479 break; 480 case FKEY | F(50): /* Arrow up. */ 481 terminal_input_special(vw->vw_terminal, TKEY_UP); 482 break; 483 case FKEY | F(51): /* Page up. */ 484 terminal_input_special(vw->vw_terminal, TKEY_PAGE_UP); 485 break; 486 case FKEY | F(53): /* Arrow left. */ 487 terminal_input_special(vw->vw_terminal, TKEY_LEFT); 488 break; 489 case FKEY | F(55): /* Arrow right. */ 490 terminal_input_special(vw->vw_terminal, TKEY_RIGHT); 491 break; 492 case FKEY | F(57): /* End key. */ 493 terminal_input_special(vw->vw_terminal, TKEY_END); 494 break; 495 case FKEY | F(58): /* Arrow down. */ 496 terminal_input_special(vw->vw_terminal, TKEY_DOWN); 497 break; 498 case FKEY | F(59): /* Page down. */ 499 terminal_input_special(vw->vw_terminal, TKEY_PAGE_DOWN); 500 break; 501 case FKEY | F(60): /* Insert key. */ 502 terminal_input_special(vw->vw_terminal, TKEY_INSERT); 503 break; 504 case FKEY | F(61): /* Delete key. */ 505 terminal_input_special(vw->vw_terminal, TKEY_DELETE); 506 break; 507 } 508 } else if (KEYFLAGS(c) == 0) { 509 /* Don't do UTF-8 conversion when doing raw mode. */ 510 if (vw->vw_kbdmode == K_XLATE) { 511#if VT_ALT_TO_ESC_HACK 512 if (vd->vd_kbstate & ALKED) { 513 /* 514 * Prepend ESC sequence if one of ALT keys down. 515 */ 516 terminal_input_char(vw->vw_terminal, 0x1b); 517 } 518#endif 519 520 terminal_input_char(vw->vw_terminal, KEYCHAR(c)); 521 } else 522 terminal_input_raw(vw->vw_terminal, c); 523 } 524 return (0); 525} 526 527static int 528vt_kbdevent(keyboard_t *kbd, int event, void *arg) 529{ 530 struct vt_device *vd = arg; 531 int c; 532 533 switch (event) { 534 case KBDIO_KEYINPUT: 535 break; 536 case KBDIO_UNLOADING: 537 mtx_lock(&Giant); 538 vd->vd_keyboard = -1; 539 kbd_release(kbd, (void *)&vd->vd_keyboard); 540 mtx_unlock(&Giant); 541 return (0); 542 default: 543 return (EINVAL); 544 } 545 546 while ((c = kbdd_read_char(kbd, 0)) != NOKEY) 547 vt_processkey(kbd, vd, c); 548 549 return (0); 550} 551 552static int 553vt_allocate_keyboard(struct vt_device *vd) 554{ 555 int idx0, idx; 556 keyboard_t *k0, *k; 557 keyboard_info_t ki; 558 559 idx0 = kbd_allocate("kbdmux", -1, (void *)&vd->vd_keyboard, 560 vt_kbdevent, vd); 561 /* XXX: kb_token lost */ 562 vd->vd_keyboard = idx0; 563 if (idx0 != -1) { 564 DPRINTF(20, "%s: kbdmux allocated, idx = %d\n", __func__, idx0); 565 k0 = kbd_get_keyboard(idx0); 566 567 for (idx = kbd_find_keyboard2("*", -1, 0); 568 idx != -1; 569 idx = kbd_find_keyboard2("*", -1, idx + 1)) { 570 k = kbd_get_keyboard(idx); 571 572 if (idx == idx0 || KBD_IS_BUSY(k)) 573 continue; 574 575 bzero(&ki, sizeof(ki)); 576 strcpy(ki.kb_name, k->kb_name); 577 ki.kb_unit = k->kb_unit; 578 579 kbdd_ioctl(k0, KBADDKBD, (caddr_t) &ki); 580 } 581 } else { 582 DPRINTF(20, "%s: no kbdmux allocated\n", __func__); 583 idx0 = kbd_allocate("*", -1, (void *)&vd->vd_keyboard, 584 vt_kbdevent, vd); 585 } 586 DPRINTF(20, "%s: vd_keyboard = %d\n", __func__, vd->vd_keyboard); 587 588 return (idx0); 589} 590 591static void 592vtterm_bell(struct terminal *tm) 593{ 594 struct vt_window *vw = tm->tm_softc; 595 struct vt_device *vd = vw->vw_device; 596 597 if (vd->vd_flags & VDF_QUIET_BELL) 598 return; 599 600 sysbeep(1193182 / VT_BELLPITCH, VT_BELLDURATION); 601} 602 603static void 604vtterm_cursor(struct terminal *tm, const term_pos_t *p) 605{ 606 struct vt_window *vw = tm->tm_softc; 607 608 vtbuf_cursor_position(&vw->vw_buf, p); 609} 610 611static void 612vtterm_putchar(struct terminal *tm, const term_pos_t *p, term_char_t c) 613{ 614 struct vt_window *vw = tm->tm_softc; 615 616 vtbuf_putchar(&vw->vw_buf, p, c); 617} 618 619static void 620vtterm_fill(struct terminal *tm, const term_rect_t *r, term_char_t c) 621{ 622 struct vt_window *vw = tm->tm_softc; 623 624 vtbuf_fill_locked(&vw->vw_buf, r, c); 625} 626 627static void 628vtterm_copy(struct terminal *tm, const term_rect_t *r, 629 const term_pos_t *p) 630{ 631 struct vt_window *vw = tm->tm_softc; 632 633 vtbuf_copy(&vw->vw_buf, r, p); 634} 635 636static void 637vtterm_param(struct terminal *tm, int cmd, unsigned int arg) 638{ 639 struct vt_window *vw = tm->tm_softc; 640 641 switch (cmd) { 642 case TP_SHOWCURSOR: 643 vtbuf_cursor_visibility(&vw->vw_buf, arg); 644 break; 645 case TP_MOUSE: 646 vw->vw_mouse_level = arg; 647 break; 648 } 649} 650 651static inline void 652vt_determine_colors(term_char_t c, int cursor, 653 term_color_t *fg, term_color_t *bg) 654{ 655 term_color_t tmp; 656 int invert; 657 658 invert = 0; 659 660 *fg = TCHAR_FGCOLOR(c); 661 if (TCHAR_FORMAT(c) & TF_BOLD) 662 *fg = TCOLOR_LIGHT(*fg); 663 *bg = TCHAR_BGCOLOR(c); 664 665 if (TCHAR_FORMAT(c) & TF_REVERSE) 666 invert ^= 1; 667 if (cursor) 668 invert ^= 1; 669 670 if (invert) { 671 tmp = *fg; 672 *fg = *bg; 673 *bg = tmp; 674 } 675} 676 677static void 678vt_bitblt_char(struct vt_device *vd, struct vt_font *vf, term_char_t c, 679 int iscursor, unsigned int row, unsigned int col) 680{ 681 term_color_t fg, bg; 682 683 vt_determine_colors(c, iscursor, &fg, &bg); 684 685 if (vf != NULL) { 686 const uint8_t *src; 687 vt_axis_t top, left; 688 689 src = vtfont_lookup(vf, c); 690 691 /* 692 * Align the terminal to the centre of the screen. 693 * Fonts may not always be able to fill the entire 694 * screen. 695 */ 696 top = row * vf->vf_height + vd->vd_offset.tp_row; 697 left = col * vf->vf_width + vd->vd_offset.tp_col; 698 699 vd->vd_driver->vd_bitbltchr(vd, src, NULL, 0, top, left, 700 vf->vf_width, vf->vf_height, fg, bg); 701 } else { 702 vd->vd_driver->vd_putchar(vd, TCHAR_CHARACTER(c), 703 row, col, fg, bg); 704 } 705} 706 707static void 708vt_flush(struct vt_device *vd) 709{ 710 struct vt_window *vw; 711 struct vt_font *vf; 712 struct vt_bufmask tmask; 713 unsigned int row, col; 714 term_rect_t tarea; 715 term_pos_t size; 716 term_char_t *r; 717#ifndef SC_NO_CUTPASTE 718 struct mouse_cursor *m; 719 int bpl, h, w; 720#endif 721 722 vw = vd->vd_curwindow; 723 if (vw == NULL) 724 return; 725 vf = vw->vw_font; 726 if (((vd->vd_flags & VDF_TEXTMODE) == 0) && (vf == NULL)) 727 return; 728 729 if (vd->vd_flags & VDF_SPLASH || vw->vw_flags & VWF_BUSY) 730 return; 731 732 vtbuf_undirty(&vw->vw_buf, &tarea, &tmask); 733 vt_termsize(vd, vf, &size); 734 735 /* Force a full redraw when the screen contents are invalid. */ 736 if (vd->vd_flags & VDF_INVALID) { 737 tarea.tr_begin.tp_row = tarea.tr_begin.tp_col = 0; 738 tarea.tr_end = size; 739 tmask.vbm_row = tmask.vbm_col = VBM_DIRTY; 740 741 vd->vd_flags &= ~VDF_INVALID; 742 } 743 744#ifndef SC_NO_CUTPASTE 745 if ((vw->vw_flags & VWF_MOUSE_HIDE) == 0) { 746 /* Mark last mouse position as dirty to erase. */ 747 vtbuf_mouse_cursor_position(&vw->vw_buf, vd->vd_mdirtyx, 748 vd->vd_mdirtyy); 749 } 750#endif 751 752 for (row = tarea.tr_begin.tp_row; row < tarea.tr_end.tp_row; row++) { 753 if (!VTBUF_DIRTYROW(&tmask, row)) 754 continue; 755 r = VTBUF_GET_ROW(&vw->vw_buf, row); 756 for (col = tarea.tr_begin.tp_col; 757 col < tarea.tr_end.tp_col; col++) { 758 if (!VTBUF_DIRTYCOL(&tmask, col)) 759 continue; 760 761 vt_bitblt_char(vd, vf, r[col], 762 VTBUF_ISCURSOR(&vw->vw_buf, row, col), row, col); 763 } 764 } 765 766#ifndef SC_NO_CUTPASTE 767 /* Mouse disabled. */ 768 if (vw->vw_flags & VWF_MOUSE_HIDE) 769 return; 770 771 /* No mouse for DDB. */ 772 if (kdb_active || panicstr != NULL) 773 return; 774 775 if ((vd->vd_flags & (VDF_MOUSECURSOR|VDF_TEXTMODE)) == 776 VDF_MOUSECURSOR) { 777 m = &vt_default_mouse_pointer; 778 bpl = (m->w + 7) >> 3; /* Bytes per sorce line. */ 779 w = m->w; 780 h = m->h; 781 782 if ((vd->vd_mx + m->w) > (size.tp_col * vf->vf_width)) 783 w = (size.tp_col * vf->vf_width) - vd->vd_mx - 1; 784 if ((vd->vd_my + m->h) > (size.tp_row * vf->vf_height)) 785 h = (size.tp_row * vf->vf_height) - vd->vd_my - 1; 786 787 vd->vd_driver->vd_maskbitbltchr(vd, m->map, m->mask, bpl, 788 vd->vd_offset.tp_row + vd->vd_my, 789 vd->vd_offset.tp_col + vd->vd_mx, 790 w, h, TC_WHITE, TC_BLACK); 791 /* Save point of last mouse cursor to erase it later. */ 792 vd->vd_mdirtyx = vd->vd_mx / vf->vf_width; 793 vd->vd_mdirtyy = vd->vd_my / vf->vf_height; 794 } 795#endif 796} 797 798static void 799vt_timer(void *arg) 800{ 801 struct vt_device *vd; 802 803 vd = arg; 804 /* Update screen if required. */ 805 vt_flush(vd); 806 807 /* Schedule for next update. */ 808 callout_schedule(&vd->vd_timer, hz / VT_TIMERFREQ); 809} 810 811static void 812vtterm_done(struct terminal *tm) 813{ 814 struct vt_window *vw = tm->tm_softc; 815 struct vt_device *vd = vw->vw_device; 816 817 if (kdb_active || panicstr != NULL) { 818 /* Switch to the debugger. */ 819 if (vd->vd_curwindow != vw) { 820 vd->vd_curwindow = vw; 821 vd->vd_flags |= VDF_INVALID; 822 if (vd->vd_driver->vd_postswitch) 823 vd->vd_driver->vd_postswitch(vd); 824 } 825 vd->vd_flags &= ~VDF_SPLASH; 826 vt_flush(vd); 827 } else if (!(vd->vd_flags & VDF_ASYNC)) { 828 vt_flush(vd); 829 } 830} 831 832#ifdef DEV_SPLASH 833static void 834vtterm_splash(struct vt_device *vd) 835{ 836 vt_axis_t top, left; 837 838 /* Display a nice boot splash. */ 839 if (!(vd->vd_flags & VDF_TEXTMODE) && (boothowto & RB_MUTE)) { 840 841 top = (vd->vd_height - vt_logo_height) / 2; 842 left = (vd->vd_width - vt_logo_width) / 2; 843 switch (vt_logo_depth) { 844 case 1: 845 /* XXX: Unhardcode colors! */ 846 vd->vd_driver->vd_bitbltchr(vd, vt_logo_image, NULL, 0, 847 top, left, vt_logo_width, vt_logo_height, 0xf, 0x0); 848 } 849 vd->vd_flags |= VDF_SPLASH; 850 } 851} 852#endif 853 854static void 855vtterm_cnprobe(struct terminal *tm, struct consdev *cp) 856{ 857 struct vt_window *vw = tm->tm_softc; 858 struct vt_device *vd = vw->vw_device; 859 struct winsize wsz; 860 861 if (vd->vd_flags & VDF_INITIALIZED) 862 /* Initialization already done. */ 863 return; 864 865 cp->cn_pri = vd->vd_driver->vd_init(vd); 866 if (cp->cn_pri == CN_DEAD) { 867 vd->vd_flags |= VDF_DEAD; 868 return; 869 } 870 871 /* Initialize any early-boot keyboard drivers */ 872 kbd_configure(KB_CONF_PROBE_ONLY); 873 874 vd->vd_unit = atomic_fetchadd_int(&vt_unit, 1); 875 vd->vd_windows[VT_CONSWINDOW] = vw; 876 sprintf(cp->cn_name, "ttyv%r", VT_UNIT(vw)); 877 878 if (!(vd->vd_flags & VDF_TEXTMODE)) 879 vw->vw_font = vtfont_ref(&vt_font_default); 880 881 vtbuf_init_early(&vw->vw_buf); 882 vt_winsize(vd, vw->vw_font, &wsz); 883 terminal_set_winsize(tm, &wsz); 884 885#ifdef DEV_SPLASH 886 vtterm_splash(vd); 887#endif 888 889 vd->vd_flags |= VDF_INITIALIZED; 890 main_vd = vd; 891} 892 893static int 894vtterm_cngetc(struct terminal *tm) 895{ 896 struct vt_window *vw = tm->tm_softc; 897 struct vt_device *vd = vw->vw_device; 898 keyboard_t *kbd; 899 int state; 900 u_int c; 901 902 if (vw->vw_kbdsq && *vw->vw_kbdsq) 903 return (*vw->vw_kbdsq++); 904 905 state = 0; 906 /* Make sure the splash screen is not there. */ 907 if (vd->vd_flags & VDF_SPLASH) { 908 /* Remove splash */ 909 vd->vd_flags &= ~VDF_SPLASH; 910 /* Mark screen as invalid to force update */ 911 vd->vd_flags |= VDF_INVALID; 912 vt_flush(vd); 913 } 914 915 /* Stripped down keyboard handler. */ 916 kbd = kbd_get_keyboard(vd->vd_keyboard); 917 if (kbd == NULL) 918 return (-1); 919 920 /* Force keyboard input mode to K_XLATE */ 921 c = K_XLATE; 922 kbdd_ioctl(kbd, KDSKBMODE, (void *)&c); 923 924 /* Switch the keyboard to polling to make it work here. */ 925 kbdd_poll(kbd, TRUE); 926 c = kbdd_read_char(kbd, 0); 927 kbdd_poll(kbd, FALSE); 928 if (c & RELKEY) 929 return (-1); 930 931 if (vw->vw_flags & VWF_SCROLL) { 932 vt_scrollmode_kbdevent(vw, c, 1/* Console mode */); 933 vt_flush(vd); 934 return (-1); 935 } 936 937 /* Stripped down handling of vt_kbdevent(), without locking, etc. */ 938 if (c & SPCLKEY) { 939 switch (c) { 940 case SPCLKEY | SLK: 941 kbdd_ioctl(kbd, KDGKBSTATE, (caddr_t)&state); 942 if (state & SLKED) { 943 /* Turn scrolling on. */ 944 vw->vw_flags |= VWF_SCROLL; 945 VTBUF_SLCK_ENABLE(&vw->vw_buf); 946 } else { 947 /* Turn scrolling off. */ 948 vt_scroll(vw, 0, VHS_END); 949 vw->vw_flags &= ~VWF_SCROLL; 950 VTBUF_SLCK_DISABLE(&vw->vw_buf); 951 } 952 break; 953 /* XXX: KDB can handle history. */ 954 case SPCLKEY | FKEY | F(50): /* Arrow up. */ 955 vw->vw_kbdsq = "\x1b[A"; 956 break; 957 case SPCLKEY | FKEY | F(58): /* Arrow down. */ 958 vw->vw_kbdsq = "\x1b[B"; 959 break; 960 case SPCLKEY | FKEY | F(55): /* Arrow right. */ 961 vw->vw_kbdsq = "\x1b[C"; 962 break; 963 case SPCLKEY | FKEY | F(53): /* Arrow left. */ 964 vw->vw_kbdsq = "\x1b[D"; 965 break; 966 } 967 968 /* Force refresh to make scrollback work. */ 969 vt_flush(vd); 970 } else if (KEYFLAGS(c) == 0) { 971 return (KEYCHAR(c)); 972 } 973 974 if (vw->vw_kbdsq && *vw->vw_kbdsq) 975 return (*vw->vw_kbdsq++); 976 977 return (-1); 978} 979 980static void 981vtterm_opened(struct terminal *tm, int opened) 982{ 983 struct vt_window *vw = tm->tm_softc; 984 struct vt_device *vd = vw->vw_device; 985 986 VT_LOCK(vd); 987 vd->vd_flags &= ~VDF_SPLASH; 988 if (opened) 989 vw->vw_flags |= VWF_OPENED; 990 else { 991 vw->vw_flags &= ~VWF_OPENED; 992 /* TODO: finish ACQ/REL */ 993 } 994 VT_UNLOCK(vd); 995} 996 997static int 998vt_change_font(struct vt_window *vw, struct vt_font *vf) 999{ 1000 struct vt_device *vd = vw->vw_device; 1001 struct terminal *tm = vw->vw_terminal; 1002 term_pos_t size; 1003 struct winsize wsz; 1004 1005 /* 1006 * Changing fonts. 1007 * 1008 * Changing fonts is a little tricky. We must prevent 1009 * simultaneous access to the device, so we must stop 1010 * the display timer and the terminal from accessing. 1011 * We need to switch fonts and grow our screen buffer. 1012 * 1013 * XXX: Right now the code uses terminal_mute() to 1014 * prevent data from reaching the console driver while 1015 * resizing the screen buffer. This isn't elegant... 1016 */ 1017 1018 VT_LOCK(vd); 1019 if (vw->vw_flags & VWF_BUSY) { 1020 /* Another process is changing the font. */ 1021 VT_UNLOCK(vd); 1022 return (EBUSY); 1023 } 1024 if (vw->vw_font == NULL) { 1025 /* Our device doesn't need fonts. */ 1026 VT_UNLOCK(vd); 1027 return (ENOTTY); 1028 } 1029 vw->vw_flags |= VWF_BUSY; 1030 VT_UNLOCK(vd); 1031 1032 vt_termsize(vd, vf, &size); 1033 vt_winsize(vd, vf, &wsz); 1034 /* Save offset to font aligned area. */ 1035 vd->vd_offset.tp_col = (vd->vd_width % vf->vf_width) / 2; 1036 vd->vd_offset.tp_row = (vd->vd_height % vf->vf_height) / 2; 1037 1038 /* Grow the screen buffer and terminal. */ 1039 terminal_mute(tm, 1); 1040 vtbuf_grow(&vw->vw_buf, &size, vw->vw_buf.vb_history_size); 1041 terminal_set_winsize_blank(tm, &wsz, 0); 1042 terminal_mute(tm, 0); 1043 1044 /* Actually apply the font to the current window. */ 1045 VT_LOCK(vd); 1046 vtfont_unref(vw->vw_font); 1047 vw->vw_font = vtfont_ref(vf); 1048 1049 /* Force a full redraw the next timer tick. */ 1050 if (vd->vd_curwindow == vw) 1051 vd->vd_flags |= VDF_INVALID; 1052 vw->vw_flags &= ~VWF_BUSY; 1053 VT_UNLOCK(vd); 1054 return (0); 1055} 1056 1057static int 1058vt_set_border(struct vt_window *vw, struct vt_font *vf, term_color_t c) 1059{ 1060 struct vt_device *vd = vw->vw_device; 1061 int l, r, t, b, w, h; 1062 1063 if (vd->vd_driver->vd_drawrect == NULL) 1064 return (ENOTSUP); 1065 1066 w = vd->vd_width - 1; 1067 h = vd->vd_height - 1; 1068 l = vd->vd_offset.tp_col - 1; 1069 r = w - l; 1070 t = vd->vd_offset.tp_row - 1; 1071 b = h - t; 1072 1073 vd->vd_driver->vd_drawrect(vd, 0, 0, w, t, 1, c); /* Top bar. */ 1074 vd->vd_driver->vd_drawrect(vd, 0, t, l, b, 1, c); /* Left bar. */ 1075 vd->vd_driver->vd_drawrect(vd, r, t, w, b, 1, c); /* Right bar. */ 1076 vd->vd_driver->vd_drawrect(vd, 0, b, w, h, 1, c); /* Bottom bar. */ 1077 1078 return (0); 1079} 1080 1081static int 1082vt_proc_alive(struct vt_window *vw) 1083{ 1084 struct proc *p; 1085 1086 if (vw->vw_smode.mode != VT_PROCESS) 1087 return (FALSE); 1088 1089 if (vw->vw_proc) { 1090 if ((p = pfind(vw->vw_pid)) != NULL) 1091 PROC_UNLOCK(p); 1092 if (vw->vw_proc == p) 1093 return (TRUE); 1094 vw->vw_proc = NULL; 1095 vw->vw_smode.mode = VT_AUTO; 1096 DPRINTF(1, "vt controlling process %d died\n", vw->vw_pid); 1097 vw->vw_pid = 0; 1098 } 1099 return (FALSE); 1100} 1101 1102static int 1103signal_vt_rel(struct vt_window *vw) 1104{ 1105 1106 if (vw->vw_smode.mode != VT_PROCESS) 1107 return (FALSE); 1108 if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) { 1109 vw->vw_proc = NULL; 1110 vw->vw_pid = 0; 1111 return (TRUE); 1112 } 1113 vw->vw_flags |= VWF_SWWAIT_REL; 1114 PROC_LOCK(vw->vw_proc); 1115 kern_psignal(vw->vw_proc, vw->vw_smode.relsig); 1116 PROC_UNLOCK(vw->vw_proc); 1117 DPRINTF(1, "sending relsig to %d\n", vw->vw_pid); 1118 return (TRUE); 1119} 1120 1121static int 1122signal_vt_acq(struct vt_window *vw) 1123{ 1124 1125 if (vw->vw_smode.mode != VT_PROCESS) 1126 return (FALSE); 1127 if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW]) 1128 cnavailable(vw->vw_terminal->consdev, FALSE); 1129 if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) { 1130 vw->vw_proc = NULL; 1131 vw->vw_pid = 0; 1132 return (TRUE); 1133 } 1134 vw->vw_flags |= VWF_SWWAIT_ACQ; 1135 PROC_LOCK(vw->vw_proc); 1136 kern_psignal(vw->vw_proc, vw->vw_smode.acqsig); 1137 PROC_UNLOCK(vw->vw_proc); 1138 DPRINTF(1, "sending acqsig to %d\n", vw->vw_pid); 1139 return (TRUE); 1140} 1141 1142static int 1143finish_vt_rel(struct vt_window *vw, int release, int *s) 1144{ 1145 1146 if (vw->vw_flags & VWF_SWWAIT_REL) { 1147 vw->vw_flags &= ~VWF_SWWAIT_REL; 1148 if (release) { 1149 callout_drain(&vw->vw_proc_dead_timer); 1150 vt_late_window_switch(vw->vw_switch_to); 1151 } 1152 return (0); 1153 } 1154 return (EINVAL); 1155} 1156 1157static int 1158finish_vt_acq(struct vt_window *vw) 1159{ 1160 1161 if (vw->vw_flags & VWF_SWWAIT_ACQ) { 1162 vw->vw_flags &= ~VWF_SWWAIT_ACQ; 1163 return (0); 1164 } 1165 return (EINVAL); 1166} 1167 1168#ifndef SC_NO_CUTPASTE 1169static void 1170vt_mouse_terminput_button(struct vt_device *vd, int button) 1171{ 1172 struct vt_window *vw; 1173 struct vt_font *vf; 1174 char mouseb[6] = "\x1B[M"; 1175 int i, x, y; 1176 1177 vw = vd->vd_curwindow; 1178 vf = vw->vw_font; 1179 1180 /* Translate to char position. */ 1181 x = vd->vd_mx / vf->vf_width; 1182 y = vd->vd_my / vf->vf_height; 1183 /* Avoid overflow. */ 1184 x = MIN(x, 255 - '!'); 1185 y = MIN(y, 255 - '!'); 1186 1187 mouseb[3] = ' ' + button; 1188 mouseb[4] = '!' + x; 1189 mouseb[5] = '!' + y; 1190 1191 for (i = 0; i < sizeof(mouseb); i++ ) 1192 terminal_input_char(vw->vw_terminal, mouseb[i]); 1193} 1194 1195static void 1196vt_mouse_terminput(struct vt_device *vd, int type, int x, int y, int event, 1197 int cnt) 1198{ 1199 1200 switch (type) { 1201 case MOUSE_BUTTON_EVENT: 1202 if (cnt > 0) { 1203 /* Mouse button pressed. */ 1204 if (event & MOUSE_BUTTON1DOWN) 1205 vt_mouse_terminput_button(vd, 0); 1206 if (event & MOUSE_BUTTON2DOWN) 1207 vt_mouse_terminput_button(vd, 1); 1208 if (event & MOUSE_BUTTON3DOWN) 1209 vt_mouse_terminput_button(vd, 2); 1210 } else { 1211 /* Mouse button released. */ 1212 vt_mouse_terminput_button(vd, 3); 1213 } 1214 break; 1215#ifdef notyet 1216 case MOUSE_MOTION_EVENT: 1217 if (mouse->u.data.z < 0) { 1218 /* Scroll up. */ 1219 sc_mouse_input_button(vd, 64); 1220 } else if (mouse->u.data.z > 0) { 1221 /* Scroll down. */ 1222 sc_mouse_input_button(vd, 65); 1223 } 1224 break; 1225#endif 1226 } 1227} 1228 1229void 1230vt_mouse_event(int type, int x, int y, int event, int cnt, int mlevel) 1231{ 1232 struct vt_device *vd; 1233 struct vt_window *vw; 1234 struct vt_font *vf; 1235 term_pos_t size; 1236 term_char_t *buf; 1237 int i, len, mark; 1238 1239 vd = main_vd; 1240 vw = vd->vd_curwindow; 1241 vf = vw->vw_font; 1242 mark = 0; 1243 1244 if (vw->vw_flags & VWF_MOUSE_HIDE) 1245 return; /* Mouse disabled. */ 1246 1247 if (vf == NULL) /* Text mode. */ 1248 return; 1249 1250 /* 1251 * TODO: add flag about pointer position changed, to not redraw chars 1252 * under mouse pointer when nothing changed. 1253 */ 1254 1255 if (vw->vw_mouse_level > 0) 1256 vt_mouse_terminput(vd, type, x, y, event, cnt); 1257 1258 switch (type) { 1259 case MOUSE_ACTION: 1260 case MOUSE_MOTION_EVENT: 1261 /* Movement */ 1262 x += vd->vd_mx; 1263 y += vd->vd_my; 1264 1265 vt_termsize(vd, vf, &size); 1266 1267 /* Apply limits. */ 1268 x = MAX(x, 0); 1269 y = MAX(y, 0); 1270 x = MIN(x, (size.tp_col * vf->vf_width) - 1); 1271 y = MIN(y, (size.tp_row * vf->vf_height) - 1); 1272 1273 vd->vd_mx = x; 1274 vd->vd_my = y; 1275 if ((vd->vd_mstate & MOUSE_BUTTON1DOWN) && 1276 (vtbuf_set_mark(&vw->vw_buf, VTB_MARK_MOVE, 1277 vd->vd_mx / vf->vf_width, 1278 vd->vd_my / vf->vf_height) == 1)) { 1279 1280 /* 1281 * We have something marked to copy, so update pointer 1282 * to window with selection. 1283 */ 1284 vd->vd_markedwin = vw; 1285 } 1286 return; /* Done */ 1287 case MOUSE_BUTTON_EVENT: 1288 /* Buttons */ 1289 break; 1290 default: 1291 return; /* Done */ 1292 } 1293 1294 switch (event) { 1295 case MOUSE_BUTTON1DOWN: 1296 switch (cnt % 4) { 1297 case 0: /* up */ 1298 mark = VTB_MARK_END; 1299 break; 1300 case 1: /* single click: start cut operation */ 1301 mark = VTB_MARK_START; 1302 break; 1303 case 2: /* double click: cut a word */ 1304 mark = VTB_MARK_WORD; 1305 break; 1306 case 3: /* triple click: cut a line */ 1307 mark = VTB_MARK_ROW; 1308 break; 1309 } 1310 break; 1311 case VT_MOUSE_PASTEBUTTON: 1312 switch (cnt) { 1313 case 0: /* up */ 1314 break; 1315 default: 1316 if (vd->vd_markedwin == NULL) 1317 return; 1318 /* Get current selecton size in bytes. */ 1319 len = vtbuf_get_marked_len(&vd->vd_markedwin->vw_buf); 1320 if (len <= 0) 1321 return; 1322 1323 buf = malloc(len, M_VT, M_WAITOK | M_ZERO); 1324 /* Request cupy/paste buffer data, no more than `len' */ 1325 vtbuf_extract_marked(&vd->vd_markedwin->vw_buf, buf, 1326 len); 1327 1328 len /= sizeof(term_char_t); 1329 for (i = 0; i < len; i++ ) { 1330 if (buf[i] == '\0') 1331 continue; 1332 terminal_input_char(vw->vw_terminal, buf[i]); 1333 } 1334 1335 /* Done, so cleanup. */ 1336 free(buf, M_VT); 1337 break; 1338 } 1339 return; /* Done */ 1340 case VT_MOUSE_EXTENDBUTTON: 1341 switch (cnt) { 1342 case 0: /* up */ 1343 if (!(vd->vd_mstate & MOUSE_BUTTON1DOWN)) 1344 mark = VTB_MARK_EXTEND; 1345 else 1346 mark = 0; 1347 break; 1348 default: 1349 mark = VTB_MARK_EXTEND; 1350 break; 1351 } 1352 break; 1353 default: 1354 return; /* Done */ 1355 } 1356 1357 /* Save buttons state. */ 1358 if (cnt > 0) 1359 vd->vd_mstate |= event; 1360 else 1361 vd->vd_mstate &= ~event; 1362 1363 if (vtbuf_set_mark(&vw->vw_buf, mark, vd->vd_mx / vf->vf_width, 1364 vd->vd_my / vf->vf_height) == 1) { 1365 /* 1366 * We have something marked to copy, so update pointer to 1367 * window with selection. 1368 */ 1369 vd->vd_markedwin = vw; 1370 } 1371} 1372 1373void 1374vt_mouse_state(int show) 1375{ 1376 struct vt_device *vd; 1377 struct vt_window *vw; 1378 1379 vd = main_vd; 1380 vw = vd->vd_curwindow; 1381 1382 switch (show) { 1383 case VT_MOUSE_HIDE: 1384 vw->vw_flags |= VWF_MOUSE_HIDE; 1385 break; 1386 case VT_MOUSE_SHOW: 1387 vw->vw_flags &= ~VWF_MOUSE_HIDE; 1388 break; 1389 } 1390} 1391#endif 1392 1393static int 1394vtterm_mmap(struct terminal *tm, vm_ooffset_t offset, vm_paddr_t * paddr, 1395 int nprot, vm_memattr_t *memattr) 1396{ 1397 struct vt_window *vw = tm->tm_softc; 1398 struct vt_device *vd = vw->vw_device; 1399 1400 if (vd->vd_driver->vd_fb_mmap) 1401 return (vd->vd_driver->vd_fb_mmap(vd, offset, paddr, nprot, 1402 memattr)); 1403 1404 return (ENXIO); 1405} 1406 1407static int 1408vtterm_ioctl(struct terminal *tm, u_long cmd, caddr_t data, 1409 struct thread *td) 1410{ 1411 struct vt_window *vw = tm->tm_softc; 1412 struct vt_device *vd = vw->vw_device; 1413 keyboard_t *kbd; 1414 int error, i, s; 1415#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 1416 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 1417 int ival; 1418 1419 switch (cmd) { 1420 case _IO('v', 4): 1421 cmd = VT_RELDISP; 1422 break; 1423 case _IO('v', 5): 1424 cmd = VT_ACTIVATE; 1425 break; 1426 case _IO('v', 6): 1427 cmd = VT_WAITACTIVE; 1428 break; 1429 case _IO('K', 20): 1430 cmd = KDSKBSTATE; 1431 break; 1432 case _IO('K', 67): 1433 cmd = KDSETRAD; 1434 break; 1435 case _IO('K', 7): 1436 cmd = KDSKBMODE; 1437 break; 1438 case _IO('K', 8): 1439 cmd = KDMKTONE; 1440 break; 1441 case _IO('K', 63): 1442 cmd = KIOCSOUND; 1443 break; 1444 case _IO('K', 66): 1445 cmd = KDSETLED; 1446 break; 1447 case _IO('c', 110): 1448 cmd = CONS_SETKBD; 1449 break; 1450 default: 1451 goto skip_thunk; 1452 } 1453 ival = IOCPARM_IVAL(data); 1454 data = (caddr_t)&ival; 1455skip_thunk: 1456#endif 1457 1458 switch (cmd) { 1459 case KDSETRAD: /* set keyboard repeat & delay rates (old) */ 1460 if (*(int *)data & ~0x7f) 1461 return (EINVAL); 1462 case GIO_KEYMAP: 1463 case PIO_KEYMAP: 1464 case GIO_DEADKEYMAP: 1465 case PIO_DEADKEYMAP: 1466 case GETFKEY: 1467 case SETFKEY: 1468 case KDGKBINFO: 1469 case KDGKBTYPE: 1470 case KDSKBSTATE: /* set keyboard state (locks) */ 1471 case KDGKBSTATE: /* get keyboard state (locks) */ 1472 case KDGETREPEAT: /* get keyboard repeat & delay rates */ 1473 case KDSETREPEAT: /* set keyboard repeat & delay rates (new) */ 1474 case KDSETLED: /* set keyboard LED status */ 1475 case KDGETLED: /* get keyboard LED status */ 1476 case KBADDKBD: /* add/remove keyboard to/from mux */ 1477 case KBRELKBD: { 1478 error = 0; 1479 1480 mtx_lock(&Giant); 1481 kbd = kbd_get_keyboard(vd->vd_keyboard); 1482 if (kbd != NULL) 1483 error = kbdd_ioctl(kbd, cmd, data); 1484 mtx_unlock(&Giant); 1485 if (error == ENOIOCTL) { 1486 if (cmd == KDGKBTYPE) { 1487 /* always return something? XXX */ 1488 *(int *)data = 0; 1489 } else { 1490 return (ENODEV); 1491 } 1492 } 1493 return (error); 1494 } 1495 case KDGKBMODE: { 1496 int mode = -1; 1497 1498 mtx_lock(&Giant); 1499 kbd = kbd_get_keyboard(vd->vd_keyboard); 1500 if (kbd != NULL) { 1501 kbdd_ioctl(kbd, KDGKBMODE, (void *)&mode); 1502 } 1503 mtx_unlock(&Giant); 1504 DPRINTF(20, "mode %d, vw_kbdmode %d\n", mode, vw->vw_kbdmode); 1505 *(int *)data = mode; 1506 return (0); 1507 } 1508 case KDSKBMODE: { 1509 int mode; 1510 1511 mode = *(int *)data; 1512 switch (mode) { 1513 case K_XLATE: 1514 case K_RAW: 1515 case K_CODE: 1516 vw->vw_kbdmode = mode; 1517 if (vw == vd->vd_curwindow) { 1518 keyboard_t *kbd; 1519 error = 0; 1520 1521 mtx_lock(&Giant); 1522 kbd = kbd_get_keyboard(vd->vd_keyboard); 1523 if (kbd != NULL) { 1524 error = kbdd_ioctl(kbd, KDSKBMODE, 1525 (void *)&mode); 1526 } 1527 mtx_unlock(&Giant); 1528 } 1529 return (0); 1530 default: 1531 return (EINVAL); 1532 } 1533 } 1534 case FBIOGTYPE: 1535 case FBIO_GETWINORG: /* get frame buffer window origin */ 1536 case FBIO_GETDISPSTART: /* get display start address */ 1537 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */ 1538 case FBIO_BLANK: /* blank display */ 1539 if (vd->vd_driver->vd_fb_ioctl) 1540 return (vd->vd_driver->vd_fb_ioctl(vd, cmd, data, td)); 1541 break; 1542 case CONS_BLANKTIME: 1543 /* XXX */ 1544 return (0); 1545 case CONS_GET: 1546 /* XXX */ 1547 *(int *)data = M_CG640x480; 1548 return (0); 1549 case CONS_BELLTYPE: /* set bell type sound */ 1550 if ((*(int *)data) & CONS_QUIET_BELL) 1551 vd->vd_flags |= VDF_QUIET_BELL; 1552 else 1553 vd->vd_flags &= ~VDF_QUIET_BELL; 1554 return (0); 1555 case CONS_GETINFO: { 1556 vid_info_t *vi = (vid_info_t *)data; 1557 1558 vi->m_num = vd->vd_curwindow->vw_number + 1; 1559 /* XXX: other fields! */ 1560 return (0); 1561 } 1562 case CONS_GETVERS: 1563 *(int *)data = 0x200; 1564 return (0); 1565 case CONS_MODEINFO: 1566 /* XXX */ 1567 return (0); 1568 case CONS_MOUSECTL: { 1569 mouse_info_t *mouse = (mouse_info_t*)data; 1570 1571 /* 1572 * This has no effect on vt(4). We don't draw any mouse 1573 * cursor. Just ignore MOUSE_HIDE and MOUSE_SHOW to 1574 * prevent excessive errors. All the other commands 1575 * should not be applied to individual TTYs, but only to 1576 * consolectl. 1577 */ 1578 switch (mouse->operation) { 1579 case MOUSE_HIDE: 1580 vd->vd_flags &= ~VDF_MOUSECURSOR; 1581 return (0); 1582 case MOUSE_SHOW: 1583 vd->vd_mx = vd->vd_width / 2; 1584 vd->vd_my = vd->vd_height / 2; 1585 vd->vd_flags |= VDF_MOUSECURSOR; 1586 return (0); 1587 default: 1588 return (EINVAL); 1589 } 1590 } 1591 case PIO_VFONT: { 1592 struct vt_font *vf; 1593 1594 error = vtfont_load((void *)data, &vf); 1595 if (error != 0) 1596 return (error); 1597 1598 error = vt_change_font(vw, vf); 1599 if (error == 0) { 1600 /* XXX: replace 0 with current bg color. */ 1601 vt_set_border(vw, vf, 0); 1602 } 1603 vtfont_unref(vf); 1604 return (error); 1605 } 1606 case GIO_SCRNMAP: { 1607 scrmap_t *sm = (scrmap_t *)data; 1608 int i; 1609 1610 /* We don't have screen maps, so return a handcrafted one. */ 1611 for (i = 0; i < 256; i++) 1612 sm->scrmap[i] = i; 1613 return (0); 1614 } 1615 case KDSETMODE: 1616 /* XXX */ 1617 return (0); 1618 case KDENABIO: /* allow io operations */ 1619 error = priv_check(td, PRIV_IO); 1620 if (error != 0) 1621 return (error); 1622 error = securelevel_gt(td->td_ucred, 0); 1623 if (error != 0) 1624 return (error); 1625#if defined(__i386__) 1626 td->td_frame->tf_eflags |= PSL_IOPL; 1627#elif defined(__amd64__) 1628 td->td_frame->tf_rflags |= PSL_IOPL; 1629#endif 1630 return (0); 1631 case KDDISABIO: /* disallow io operations (default) */ 1632#if defined(__i386__) 1633 td->td_frame->tf_eflags &= ~PSL_IOPL; 1634#elif defined(__amd64__) 1635 td->td_frame->tf_rflags &= ~PSL_IOPL; 1636#endif 1637 return (0); 1638 case KDMKTONE: /* sound the bell */ 1639 /* TODO */ 1640 return (0); 1641 case KIOCSOUND: /* make tone (*data) hz */ 1642 /* TODO */ 1643 return (0); 1644 case CONS_SETKBD: /* set the new keyboard */ 1645 mtx_lock(&Giant); 1646 error = 0; 1647 if (vd->vd_keyboard != *(int *)data) { 1648 kbd = kbd_get_keyboard(*(int *)data); 1649 if (kbd == NULL) { 1650 mtx_unlock(&Giant); 1651 return (EINVAL); 1652 } 1653 i = kbd_allocate(kbd->kb_name, kbd->kb_unit, 1654 (void *)&vd->vd_keyboard, vt_kbdevent, vd); 1655 if (i >= 0) { 1656 if (vd->vd_keyboard != -1) { 1657 kbd_release(kbd, 1658 (void *)&vd->vd_keyboard); 1659 } 1660 kbd = kbd_get_keyboard(i); 1661 vd->vd_keyboard = i; 1662 1663 (void)kbdd_ioctl(kbd, KDSKBMODE, 1664 (caddr_t)&vd->vd_curwindow->vw_kbdmode); 1665 } else { 1666 error = EPERM; /* XXX */ 1667 } 1668 } 1669 mtx_unlock(&Giant); 1670 return (error); 1671 case CONS_RELKBD: /* release the current keyboard */ 1672 mtx_lock(&Giant); 1673 error = 0; 1674 if (vd->vd_keyboard != -1) { 1675 kbd = kbd_get_keyboard(vd->vd_keyboard); 1676 if (kbd == NULL) { 1677 mtx_unlock(&Giant); 1678 return (EINVAL); 1679 } 1680 error = kbd_release(kbd, (void *)&vd->vd_keyboard); 1681 if (error == 0) { 1682 vd->vd_keyboard = -1; 1683 } 1684 } 1685 mtx_unlock(&Giant); 1686 return (error); 1687 case VT_ACTIVATE: { 1688 int win; 1689 win = *(int *)data - 1; 1690 DPRINTF(5, "%s%d: VT_ACTIVATE ttyv%d ", SC_DRIVER_NAME, 1691 VT_UNIT(vw), win); 1692 if ((win > VT_MAXWINDOWS) || (win < 0)) 1693 return (EINVAL); 1694 return (vt_proc_window_switch(vd->vd_windows[win])); 1695 } 1696 case VT_GETACTIVE: 1697 *(int *)data = vd->vd_curwindow->vw_number + 1; 1698 return (0); 1699 case VT_GETINDEX: 1700 *(int *)data = vw->vw_number + 1; 1701 return (0); 1702 case VT_LOCKSWITCH: 1703 /* TODO: Check current state, switching can be in progress. */ 1704 if ((*(int *)data) & 0x01) 1705 vw->vw_flags |= VWF_VTYLOCK; 1706 else 1707 vw->vw_flags &= ~VWF_VTYLOCK; 1708 case VT_OPENQRY: 1709 VT_LOCK(vd); 1710 for (i = 0; i < VT_MAXWINDOWS; i++) { 1711 vw = vd->vd_windows[i]; 1712 if (vw == NULL) 1713 continue; 1714 if (!(vw->vw_flags & VWF_OPENED)) { 1715 *(int *)data = vw->vw_number + 1; 1716 VT_UNLOCK(vd); 1717 return (0); 1718 } 1719 } 1720 VT_UNLOCK(vd); 1721 return (EINVAL); 1722 case VT_WAITACTIVE: { 1723 unsigned int idx; 1724 1725 error = 0; 1726 1727 idx = *(unsigned int *)data; 1728 if (idx > VT_MAXWINDOWS) 1729 return (EINVAL); 1730 if (idx > 0) 1731 vw = vd->vd_windows[idx - 1]; 1732 1733 VT_LOCK(vd); 1734 while (vd->vd_curwindow != vw && error == 0) 1735 error = cv_wait_sig(&vd->vd_winswitch, &vd->vd_lock); 1736 VT_UNLOCK(vd); 1737 return (error); 1738 } 1739 case VT_SETMODE: { /* set screen switcher mode */ 1740 struct vt_mode *mode; 1741 struct proc *p1; 1742 1743 mode = (struct vt_mode *)data; 1744 DPRINTF(5, "%s%d: VT_SETMODE ", SC_DRIVER_NAME, VT_UNIT(vw)); 1745 if (vw->vw_smode.mode == VT_PROCESS) { 1746 p1 = pfind(vw->vw_pid); 1747 if (vw->vw_proc == p1 && vw->vw_proc != td->td_proc) { 1748 if (p1) 1749 PROC_UNLOCK(p1); 1750 DPRINTF(5, "error EPERM\n"); 1751 return (EPERM); 1752 } 1753 if (p1) 1754 PROC_UNLOCK(p1); 1755 } 1756 if (mode->mode == VT_AUTO) { 1757 vw->vw_smode.mode = VT_AUTO; 1758 vw->vw_proc = NULL; 1759 vw->vw_pid = 0; 1760 DPRINTF(5, "VT_AUTO, "); 1761 if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW]) 1762 cnavailable(vw->vw_terminal->consdev, TRUE); 1763 /* were we in the middle of the vty switching process? */ 1764 if (finish_vt_rel(vw, TRUE, &s) == 0) 1765 DPRINTF(5, "reset WAIT_REL, "); 1766 if (finish_vt_acq(vw) == 0) 1767 DPRINTF(5, "reset WAIT_ACQ, "); 1768 return (0); 1769 } else if (mode->mode == VT_PROCESS) { 1770 if (!ISSIGVALID(mode->relsig) || 1771 !ISSIGVALID(mode->acqsig) || 1772 !ISSIGVALID(mode->frsig)) { 1773 DPRINTF(5, "error EINVAL\n"); 1774 return (EINVAL); 1775 } 1776 DPRINTF(5, "VT_PROCESS %d, ", td->td_proc->p_pid); 1777 bcopy(data, &vw->vw_smode, sizeof(struct vt_mode)); 1778 vw->vw_proc = td->td_proc; 1779 vw->vw_pid = vw->vw_proc->p_pid; 1780 if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW]) 1781 cnavailable(vw->vw_terminal->consdev, FALSE); 1782 } else { 1783 DPRINTF(5, "VT_SETMODE failed, unknown mode %d\n", 1784 mode->mode); 1785 return (EINVAL); 1786 } 1787 DPRINTF(5, "\n"); 1788 return (0); 1789 } 1790 case VT_GETMODE: /* get screen switcher mode */ 1791 bcopy(&vw->vw_smode, data, sizeof(struct vt_mode)); 1792 return (0); 1793 1794 case VT_RELDISP: /* screen switcher ioctl */ 1795 /* 1796 * This must be the current vty which is in the VT_PROCESS 1797 * switching mode... 1798 */ 1799 if ((vw != vd->vd_curwindow) || (vw->vw_smode.mode != 1800 VT_PROCESS)) { 1801 return (EINVAL); 1802 } 1803 /* ...and this process is controlling it. */ 1804 if (vw->vw_proc != td->td_proc) { 1805 return (EPERM); 1806 } 1807 error = EINVAL; 1808 switch(*(int *)data) { 1809 case VT_FALSE: /* user refuses to release screen, abort */ 1810 if ((error = finish_vt_rel(vw, FALSE, &s)) == 0) 1811 DPRINTF(5, "%s%d: VT_RELDISP: VT_FALSE\n", 1812 SC_DRIVER_NAME, VT_UNIT(vw)); 1813 break; 1814 case VT_TRUE: /* user has released screen, go on */ 1815 /* finish_vt_rel(..., TRUE, ...) should not be locked */ 1816 if (vw->vw_flags & VWF_SWWAIT_REL) { 1817 if ((error = finish_vt_rel(vw, TRUE, &s)) == 0) 1818 DPRINTF(5, "%s%d: VT_RELDISP: VT_TRUE\n", 1819 SC_DRIVER_NAME, VT_UNIT(vw)); 1820 } else { 1821 error = EINVAL; 1822 } 1823 return (error); 1824 case VT_ACKACQ: /* acquire acknowledged, switch completed */ 1825 if ((error = finish_vt_acq(vw)) == 0) 1826 DPRINTF(5, "%s%d: VT_RELDISP: VT_ACKACQ\n", 1827 SC_DRIVER_NAME, VT_UNIT(vw)); 1828 break; 1829 default: 1830 break; 1831 } 1832 return (error); 1833 } 1834 1835 return (ENOIOCTL); 1836} 1837 1838static struct vt_window * 1839vt_allocate_window(struct vt_device *vd, unsigned int window) 1840{ 1841 struct vt_window *vw; 1842 struct terminal *tm; 1843 term_pos_t size; 1844 struct winsize wsz; 1845 1846 vw = malloc(sizeof *vw, M_VT, M_WAITOK|M_ZERO); 1847 vw->vw_device = vd; 1848 vw->vw_number = window; 1849 vw->vw_kbdmode = K_XLATE; 1850 1851 if (!(vd->vd_flags & VDF_TEXTMODE)) 1852 vw->vw_font = vtfont_ref(&vt_font_default); 1853 1854 vt_termsize(vd, vw->vw_font, &size); 1855 vt_winsize(vd, vw->vw_font, &wsz); 1856 vtbuf_init(&vw->vw_buf, &size); 1857 1858 tm = vw->vw_terminal = terminal_alloc(&vt_termclass, vw); 1859 terminal_set_winsize(tm, &wsz); 1860 vd->vd_windows[window] = vw; 1861 callout_init(&vw->vw_proc_dead_timer, 0); 1862 1863 return (vw); 1864} 1865 1866void 1867vt_upgrade(struct vt_device *vd) 1868{ 1869 struct vt_window *vw; 1870 unsigned int i; 1871 1872 /* Device didn't pass vd_init() or already upgraded. */ 1873 if (vd->vd_flags & (VDF_ASYNC|VDF_DEAD)) 1874 return; 1875 vd->vd_flags |= VDF_ASYNC; 1876 1877 mtx_init(&vd->vd_lock, "vtdev", NULL, MTX_DEF); 1878 cv_init(&vd->vd_winswitch, "vtwswt"); 1879 1880 /* Init 25 Hz timer. */ 1881 callout_init_mtx(&vd->vd_timer, &vd->vd_lock, 0); 1882 1883 for (i = 0; i < VT_MAXWINDOWS; i++) { 1884 vw = vd->vd_windows[i]; 1885 if (vw == NULL) { 1886 /* New window. */ 1887 vw = vt_allocate_window(vd, i); 1888 } else if (vw->vw_flags & VWF_CONSOLE) { 1889 /* For existing console window. */ 1890 callout_init(&vw->vw_proc_dead_timer, 0); 1891 } 1892 if (i == VT_CONSWINDOW) { 1893 /* Console window. */ 1894 EVENTHANDLER_REGISTER(shutdown_pre_sync, 1895 vt_window_switch, vw, SHUTDOWN_PRI_DEFAULT); 1896 } 1897 terminal_maketty(vw->vw_terminal, "v%r", VT_UNIT(vw)); 1898 1899 } 1900 if (vd->vd_curwindow == NULL) 1901 vd->vd_curwindow = vd->vd_windows[VT_CONSWINDOW]; 1902 1903 /* Attach keyboard. */ 1904 vt_allocate_keyboard(vd); 1905 DPRINTF(20, "%s: vd_keyboard = %d\n", __func__, vd->vd_keyboard); 1906 1907 /* Start timer when everything ready. */ 1908 callout_reset(&vd->vd_timer, hz / VT_TIMERFREQ, vt_timer, vd); 1909} 1910 1911static void 1912vt_resize(struct vt_device *vd) 1913{ 1914 struct vt_window *vw; 1915 int i; 1916 1917 for (i = 0; i < VT_MAXWINDOWS; i++) { 1918 vw = vd->vd_windows[i]; 1919 /* Assign default font to window, if not textmode. */ 1920 if (!(vd->vd_flags & VDF_TEXTMODE) && vw->vw_font == NULL) 1921 vw->vw_font = vtfont_ref(&vt_font_default); 1922 /* Resize terminal windows */ 1923 vt_change_font(vw, vw->vw_font); 1924 } 1925} 1926 1927void 1928vt_allocate(struct vt_driver *drv, void *softc) 1929{ 1930 struct vt_device *vd; 1931 struct winsize wsz; 1932 1933 if (main_vd == NULL) { 1934 main_vd = malloc(sizeof *vd, M_VT, M_WAITOK|M_ZERO); 1935 printf("%s: VT initialize with new VT driver.\n", __func__); 1936 } else { 1937 /* 1938 * Check if have rights to replace current driver. For example: 1939 * it is bad idea to replace KMS driver with generic VGA one. 1940 */ 1941 if (drv->vd_priority <= main_vd->vd_driver->vd_priority) { 1942 printf("%s: Driver priority %d too low. Current %d\n ", 1943 __func__, drv->vd_priority, 1944 main_vd->vd_driver->vd_priority); 1945 return; 1946 } 1947 printf("%s: Replace existing VT driver.\n", __func__); 1948 } 1949 vd = main_vd; 1950 if (drv->vd_maskbitbltchr == NULL) 1951 drv->vd_maskbitbltchr = drv->vd_bitbltchr; 1952 1953 if (vd->vd_flags & VDF_ASYNC) { 1954 /* Stop vt_flush periodic task. */ 1955 callout_drain(&vd->vd_timer); 1956 /* 1957 * Mute current terminal until we done. vt_change_font (called 1958 * from vt_resize) will unmute it. 1959 */ 1960 terminal_mute(vd->vd_curwindow->vw_terminal, 1); 1961 } 1962 1963 /* 1964 * Reset VDF_TEXTMODE flag, driver who require that flag (vt_vga) will 1965 * set it. 1966 */ 1967 vd->vd_flags &= ~VDF_TEXTMODE; 1968 1969 vd->vd_driver = drv; 1970 vd->vd_softc = softc; 1971 vd->vd_driver->vd_init(vd); 1972 1973 vt_upgrade(vd); 1974 1975 /* Refill settings with new sizes. */ 1976 vt_resize(vd); 1977 1978#ifdef DEV_SPLASH 1979 if (vd->vd_flags & VDF_SPLASH) 1980 vtterm_splash(vd); 1981#endif 1982 1983 if (vd->vd_flags & VDF_ASYNC) { 1984 terminal_mute(vd->vd_curwindow->vw_terminal, 0); 1985 callout_schedule(&vd->vd_timer, hz / VT_TIMERFREQ); 1986 } 1987 1988 termcn_cnregister(vd->vd_windows[VT_CONSWINDOW]->vw_terminal); 1989 1990 /* Update console window sizes to actual. */ 1991 vt_winsize(vd, vd->vd_windows[VT_CONSWINDOW]->vw_font, &wsz); 1992 terminal_set_winsize(vd->vd_windows[VT_CONSWINDOW]->vw_terminal, &wsz); 1993} 1994 1995void 1996vt_suspend() 1997{ 1998 1999 if (vt_suspendswitch == 0) 2000 return; 2001 /* Save current window. */ 2002 main_vd->vd_savedwindow = main_vd->vd_curwindow; 2003 /* Ask holding process to free window and switch to console window */ 2004 vt_proc_window_switch(main_vd->vd_windows[VT_CONSWINDOW]); 2005} 2006 2007void 2008vt_resume() 2009{ 2010 2011 if (vt_suspendswitch == 0) 2012 return; 2013 /* Switch back to saved window */ 2014 if (main_vd->vd_savedwindow != NULL) 2015 vt_proc_window_switch(main_vd->vd_savedwindow); 2016 main_vd->vd_savedwindow = NULL; 2017} 2018