1 /* 2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver 3 * 4 * Copyright (C) 1995 Geert Uytterhoeven 5 * 6 * 7 * This file is based on the original Amiga console driver (amicon.c): 8 * 9 * Copyright (C) 1993 Hamish Macdonald 10 * Greg Harp 11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk] 12 * 13 * with work by William Rucklidge (wjr@cs.cornell.edu) 14 * Geert Uytterhoeven 15 * Jes Sorensen (jds@kom.auc.dk) 16 * Martin Apel 17 * 18 * and on the original Atari console driver (atacon.c): 19 * 20 * Copyright (C) 1993 Bjoern Brauel 21 * Roman Hodek 22 * 23 * with work by Guenther Kelleter 24 * Martin Schaller 25 * Andreas Schwab 26 * 27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org) 28 * Smart redraw scrolling, arbitrary font width support, 512char font support 29 * and software scrollback added by 30 * Jakub Jelinek (jj@ultra.linux.cz) 31 * 32 * Random hacking by Martin Mares <mj@ucw.cz> 33 * 34 * 2001 - Documented with DocBook 35 * - Brad Douglas <brad@neruo.com> 36 * 37 * The low level operations for the various display memory organizations are 38 * now in separate source files. 39 * 40 * Currently the following organizations are supported: 41 * 42 * o afb Amiga bitplanes 43 * o cfb{2,4,8,16,24,32} Packed pixels 44 * o ilbm Amiga interleaved bitplanes 45 * o iplan2p[248] Atari interleaved bitplanes 46 * o mfb Monochrome 47 * o vga VGA characters/attributes 48 * 49 * To do: 50 * 51 * - Implement 16 plane mode (iplan2p16) 52 * 53 * 54 * This file is subject to the terms and conditions of the GNU General Public 55 * License. See the file COPYING in the main directory of this archive for 56 * more details. 57 */ 58 59 #undef FBCONDEBUG 60 61 #include <linux/module.h> 62 #include <linux/types.h> 63 #include <linux/fs.h> 64 #include <linux/kernel.h> 65 #include <linux/delay.h> /* MSch: for IRQ probe */ 66 #include <linux/console.h> 67 #include <linux/string.h> 68 #include <linux/kd.h> 69 #include <linux/slab.h> 70 #include <linux/fb.h> 71 #include <linux/fbcon.h> 72 #include <linux/vt_kern.h> 73 #include <linux/selection.h> 74 #include <linux/font.h> 75 #include <linux/smp.h> 76 #include <linux/init.h> 77 #include <linux/interrupt.h> 78 #include <linux/crc32.h> /* For counting font checksums */ 79 #include <linux/uaccess.h> 80 #include <asm/fb.h> 81 #include <asm/irq.h> 82 83 #include "fbcon.h" 84 85 #ifdef FBCONDEBUG 86 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args) 87 #else 88 # define DPRINTK(fmt, args...) 89 #endif 90 91 /* 92 * FIXME: Locking 93 * 94 * - fbcon state itself is protected by the console_lock, and the code does a 95 * pretty good job at making sure that lock is held everywhere it's needed. 96 * 97 * - access to the registered_fb array is entirely unprotected. This should use 98 * proper object lifetime handling, i.e. get/put_fb_info. This also means 99 * switching from indices to proper pointers for fb_info everywhere. 100 * 101 * - fbcon doesn't bother with fb_lock/unlock at all. This is buggy, since it 102 * means concurrent access to the same fbdev from both fbcon and userspace 103 * will blow up. To fix this all fbcon calls from fbmem.c need to be moved out 104 * of fb_lock/unlock protected sections, since otherwise we'll recurse and 105 * deadlock eventually. Aside: Due to these deadlock issues the fbdev code in 106 * fbmem.c cannot use locking asserts, and there's lots of callers which get 107 * the rules wrong, e.g. fbsysfs.c entirely missed fb_lock/unlock calls too. 108 */ 109 110 enum { 111 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */ 112 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */ 113 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */ 114 }; 115 116 static struct fbcon_display fb_display[MAX_NR_CONSOLES]; 117 118 static signed char con2fb_map[MAX_NR_CONSOLES]; 119 static signed char con2fb_map_boot[MAX_NR_CONSOLES]; 120 121 static int logo_lines; 122 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO 123 enums. */ 124 static int logo_shown = FBCON_LOGO_CANSHOW; 125 /* console mappings */ 126 static int first_fb_vc; 127 static int last_fb_vc = MAX_NR_CONSOLES - 1; 128 static int fbcon_is_default = 1; 129 static int primary_device = -1; 130 static int fbcon_has_console_bind; 131 132 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 133 static int map_override; 134 135 static inline void fbcon_map_override(void) 136 { 137 map_override = 1; 138 } 139 #else 140 static inline void fbcon_map_override(void) 141 { 142 } 143 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */ 144 145 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 146 static bool deferred_takeover = true; 147 #else 148 #define deferred_takeover false 149 #endif 150 151 /* font data */ 152 static char fontname[40]; 153 154 /* current fb_info */ 155 static int info_idx = -1; 156 157 /* console rotation */ 158 static int initial_rotation = -1; 159 static int fbcon_has_sysfs; 160 static int margin_color; 161 162 static const struct consw fb_con; 163 164 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) 165 166 static int fbcon_cursor_noblink; 167 168 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) 169 170 /* 171 * Interface used by the world 172 */ 173 174 static const char *fbcon_startup(void); 175 static void fbcon_init(struct vc_data *vc, int init); 176 static void fbcon_deinit(struct vc_data *vc); 177 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 178 int width); 179 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); 180 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 181 int count, int ypos, int xpos); 182 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); 183 static void fbcon_cursor(struct vc_data *vc, int mode); 184 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 185 int height, int width); 186 static int fbcon_switch(struct vc_data *vc); 187 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); 188 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table); 189 190 /* 191 * Internal routines 192 */ 193 static __inline__ void ywrap_up(struct vc_data *vc, int count); 194 static __inline__ void ywrap_down(struct vc_data *vc, int count); 195 static __inline__ void ypan_up(struct vc_data *vc, int count); 196 static __inline__ void ypan_down(struct vc_data *vc, int count); 197 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, 198 int dy, int dx, int height, int width, u_int y_break); 199 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 200 int unit); 201 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, 202 int line, int count, int dy); 203 static void fbcon_modechanged(struct fb_info *info); 204 static void fbcon_set_all_vcs(struct fb_info *info); 205 static void fbcon_start(void); 206 static void fbcon_exit(void); 207 static struct device *fbcon_device; 208 209 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION 210 static inline void fbcon_set_rotation(struct fb_info *info) 211 { 212 struct fbcon_ops *ops = info->fbcon_par; 213 214 if (!(info->flags & FBINFO_MISC_TILEBLITTING) && 215 ops->p->con_rotate < 4) 216 ops->rotate = ops->p->con_rotate; 217 else 218 ops->rotate = 0; 219 } 220 221 static void fbcon_rotate(struct fb_info *info, u32 rotate) 222 { 223 struct fbcon_ops *ops= info->fbcon_par; 224 struct fb_info *fb_info; 225 226 if (!ops || ops->currcon == -1) 227 return; 228 229 fb_info = registered_fb[con2fb_map[ops->currcon]]; 230 231 if (info == fb_info) { 232 struct fbcon_display *p = &fb_display[ops->currcon]; 233 234 if (rotate < 4) 235 p->con_rotate = rotate; 236 else 237 p->con_rotate = 0; 238 239 fbcon_modechanged(info); 240 } 241 } 242 243 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 244 { 245 struct fbcon_ops *ops = info->fbcon_par; 246 struct vc_data *vc; 247 struct fbcon_display *p; 248 int i; 249 250 if (!ops || ops->currcon < 0 || rotate > 3) 251 return; 252 253 for (i = first_fb_vc; i <= last_fb_vc; i++) { 254 vc = vc_cons[i].d; 255 if (!vc || vc->vc_mode != KD_TEXT || 256 registered_fb[con2fb_map[i]] != info) 257 continue; 258 259 p = &fb_display[vc->vc_num]; 260 p->con_rotate = rotate; 261 } 262 263 fbcon_set_all_vcs(info); 264 } 265 #else 266 static inline void fbcon_set_rotation(struct fb_info *info) 267 { 268 struct fbcon_ops *ops = info->fbcon_par; 269 270 ops->rotate = FB_ROTATE_UR; 271 } 272 273 static void fbcon_rotate(struct fb_info *info, u32 rotate) 274 { 275 return; 276 } 277 278 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 279 { 280 return; 281 } 282 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ 283 284 static int fbcon_get_rotate(struct fb_info *info) 285 { 286 struct fbcon_ops *ops = info->fbcon_par; 287 288 return (ops) ? ops->rotate : 0; 289 } 290 291 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) 292 { 293 struct fbcon_ops *ops = info->fbcon_par; 294 295 return (info->state != FBINFO_STATE_RUNNING || 296 vc->vc_mode != KD_TEXT || ops->graphics); 297 } 298 299 static int get_color(struct vc_data *vc, struct fb_info *info, 300 u16 c, int is_fg) 301 { 302 int depth = fb_get_color_depth(&info->var, &info->fix); 303 int color = 0; 304 305 if (console_blanked) { 306 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; 307 308 c = vc->vc_video_erase_char & charmask; 309 } 310 311 if (depth != 1) 312 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) 313 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); 314 315 switch (depth) { 316 case 1: 317 { 318 int col = mono_col(info); 319 /* 0 or 1 */ 320 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; 321 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; 322 323 if (console_blanked) 324 fg = bg; 325 326 color = (is_fg) ? fg : bg; 327 break; 328 } 329 case 2: 330 /* 331 * Scale down 16-colors to 4 colors. Default 4-color palette 332 * is grayscale. However, simply dividing the values by 4 333 * will not work, as colors 1, 2 and 3 will be scaled-down 334 * to zero rendering them invisible. So empirically convert 335 * colors to a sane 4-level grayscale. 336 */ 337 switch (color) { 338 case 0: 339 color = 0; /* black */ 340 break; 341 case 1 ... 6: 342 color = 2; /* white */ 343 break; 344 case 7 ... 8: 345 color = 1; /* gray */ 346 break; 347 default: 348 color = 3; /* intense white */ 349 break; 350 } 351 break; 352 case 3: 353 /* 354 * Last 8 entries of default 16-color palette is a more intense 355 * version of the first 8 (i.e., same chrominance, different 356 * luminance). 357 */ 358 color &= 7; 359 break; 360 } 361 362 363 return color; 364 } 365 366 static void fb_flashcursor(struct work_struct *work) 367 { 368 struct fb_info *info = container_of(work, struct fb_info, queue); 369 struct fbcon_ops *ops = info->fbcon_par; 370 struct vc_data *vc = NULL; 371 int c; 372 int mode; 373 int ret; 374 375 /* FIXME: we should sort out the unbind locking instead */ 376 /* instead we just fail to flash the cursor if we can't get 377 * the lock instead of blocking fbcon deinit */ 378 ret = console_trylock(); 379 if (ret == 0) 380 return; 381 382 if (ops && ops->currcon != -1) 383 vc = vc_cons[ops->currcon].d; 384 385 if (!vc || !con_is_visible(vc) || 386 registered_fb[con2fb_map[vc->vc_num]] != info || 387 vc->vc_deccm != 1) { 388 console_unlock(); 389 return; 390 } 391 392 c = scr_readw((u16 *) vc->vc_pos); 393 mode = (!ops->cursor_flash || ops->cursor_state.enable) ? 394 CM_ERASE : CM_DRAW; 395 ops->cursor(vc, info, mode, get_color(vc, info, c, 1), 396 get_color(vc, info, c, 0)); 397 console_unlock(); 398 } 399 400 static void cursor_timer_handler(struct timer_list *t) 401 { 402 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer); 403 struct fb_info *info = ops->info; 404 405 queue_work(system_power_efficient_wq, &info->queue); 406 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 407 } 408 409 static void fbcon_add_cursor_timer(struct fb_info *info) 410 { 411 struct fbcon_ops *ops = info->fbcon_par; 412 413 if ((!info->queue.func || info->queue.func == fb_flashcursor) && 414 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) && 415 !fbcon_cursor_noblink) { 416 if (!info->queue.func) 417 INIT_WORK(&info->queue, fb_flashcursor); 418 419 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0); 420 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 421 ops->flags |= FBCON_FLAGS_CURSOR_TIMER; 422 } 423 } 424 425 static void fbcon_del_cursor_timer(struct fb_info *info) 426 { 427 struct fbcon_ops *ops = info->fbcon_par; 428 429 if (info->queue.func == fb_flashcursor && 430 ops->flags & FBCON_FLAGS_CURSOR_TIMER) { 431 del_timer_sync(&ops->cursor_timer); 432 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; 433 } 434 } 435 436 #ifndef MODULE 437 static int __init fb_console_setup(char *this_opt) 438 { 439 char *options; 440 int i, j; 441 442 if (!this_opt || !*this_opt) 443 return 1; 444 445 while ((options = strsep(&this_opt, ",")) != NULL) { 446 if (!strncmp(options, "font:", 5)) { 447 strlcpy(fontname, options + 5, sizeof(fontname)); 448 continue; 449 } 450 451 if (!strncmp(options, "scrollback:", 11)) { 452 pr_warn("Ignoring scrollback size option\n"); 453 continue; 454 } 455 456 if (!strncmp(options, "map:", 4)) { 457 options += 4; 458 if (*options) { 459 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { 460 if (!options[j]) 461 j = 0; 462 con2fb_map_boot[i] = 463 (options[j++]-'0') % FB_MAX; 464 } 465 466 fbcon_map_override(); 467 } 468 continue; 469 } 470 471 if (!strncmp(options, "vc:", 3)) { 472 options += 3; 473 if (*options) 474 first_fb_vc = simple_strtoul(options, &options, 10) - 1; 475 if (first_fb_vc < 0) 476 first_fb_vc = 0; 477 if (*options++ == '-') 478 last_fb_vc = simple_strtoul(options, &options, 10) - 1; 479 fbcon_is_default = 0; 480 continue; 481 } 482 483 if (!strncmp(options, "rotate:", 7)) { 484 options += 7; 485 if (*options) 486 initial_rotation = simple_strtoul(options, &options, 0); 487 if (initial_rotation > 3) 488 initial_rotation = 0; 489 continue; 490 } 491 492 if (!strncmp(options, "margin:", 7)) { 493 options += 7; 494 if (*options) 495 margin_color = simple_strtoul(options, &options, 0); 496 continue; 497 } 498 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 499 if (!strcmp(options, "nodefer")) { 500 deferred_takeover = false; 501 continue; 502 } 503 #endif 504 505 if (!strncmp(options, "logo-pos:", 9)) { 506 options += 9; 507 if (!strcmp(options, "center")) 508 fb_center_logo = true; 509 continue; 510 } 511 512 if (!strncmp(options, "logo-count:", 11)) { 513 options += 11; 514 if (*options) 515 fb_logo_count = simple_strtol(options, &options, 0); 516 continue; 517 } 518 } 519 return 1; 520 } 521 522 __setup("fbcon=", fb_console_setup); 523 #endif 524 525 static int search_fb_in_map(int idx) 526 { 527 int i, retval = 0; 528 529 for (i = first_fb_vc; i <= last_fb_vc; i++) { 530 if (con2fb_map[i] == idx) 531 retval = 1; 532 } 533 return retval; 534 } 535 536 static int search_for_mapped_con(void) 537 { 538 int i, retval = 0; 539 540 for (i = first_fb_vc; i <= last_fb_vc; i++) { 541 if (con2fb_map[i] != -1) 542 retval = 1; 543 } 544 return retval; 545 } 546 547 static int do_fbcon_takeover(int show_logo) 548 { 549 int err, i; 550 551 if (!num_registered_fb) 552 return -ENODEV; 553 554 if (!show_logo) 555 logo_shown = FBCON_LOGO_DONTSHOW; 556 557 for (i = first_fb_vc; i <= last_fb_vc; i++) 558 con2fb_map[i] = info_idx; 559 560 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, 561 fbcon_is_default); 562 563 if (err) { 564 for (i = first_fb_vc; i <= last_fb_vc; i++) 565 con2fb_map[i] = -1; 566 info_idx = -1; 567 } else { 568 fbcon_has_console_bind = 1; 569 } 570 571 return err; 572 } 573 574 #ifdef MODULE 575 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 576 int cols, int rows, int new_cols, int new_rows) 577 { 578 logo_shown = FBCON_LOGO_DONTSHOW; 579 } 580 #else 581 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 582 int cols, int rows, int new_cols, int new_rows) 583 { 584 /* Need to make room for the logo */ 585 struct fbcon_ops *ops = info->fbcon_par; 586 int cnt, erase = vc->vc_video_erase_char, step; 587 unsigned short *save = NULL, *r, *q; 588 int logo_height; 589 590 if (info->fbops->owner) { 591 logo_shown = FBCON_LOGO_DONTSHOW; 592 return; 593 } 594 595 /* 596 * remove underline attribute from erase character 597 * if black and white framebuffer. 598 */ 599 if (fb_get_color_depth(&info->var, &info->fix) == 1) 600 erase &= ~0x400; 601 logo_height = fb_prepare_logo(info, ops->rotate); 602 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); 603 q = (unsigned short *) (vc->vc_origin + 604 vc->vc_size_row * rows); 605 step = logo_lines * cols; 606 for (r = q - logo_lines * cols; r < q; r++) 607 if (scr_readw(r) != vc->vc_video_erase_char) 608 break; 609 if (r != q && new_rows >= rows + logo_lines) { 610 save = kmalloc(array3_size(logo_lines, new_cols, 2), 611 GFP_KERNEL); 612 if (save) { 613 int i = cols < new_cols ? cols : new_cols; 614 scr_memsetw(save, erase, array3_size(logo_lines, new_cols, 2)); 615 r = q - step; 616 for (cnt = 0; cnt < logo_lines; cnt++, r += i) 617 scr_memcpyw(save + cnt * new_cols, r, 2 * i); 618 r = q; 619 } 620 } 621 if (r == q) { 622 /* We can scroll screen down */ 623 r = q - step - cols; 624 for (cnt = rows - logo_lines; cnt > 0; cnt--) { 625 scr_memcpyw(r + step, r, vc->vc_size_row); 626 r -= cols; 627 } 628 if (!save) { 629 int lines; 630 if (vc->state.y + logo_lines >= rows) 631 lines = rows - vc->state.y - 1; 632 else 633 lines = logo_lines; 634 vc->state.y += lines; 635 vc->vc_pos += lines * vc->vc_size_row; 636 } 637 } 638 scr_memsetw((unsigned short *) vc->vc_origin, 639 erase, 640 vc->vc_size_row * logo_lines); 641 642 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 643 fbcon_clear_margins(vc, 0); 644 update_screen(vc); 645 } 646 647 if (save) { 648 q = (unsigned short *) (vc->vc_origin + 649 vc->vc_size_row * 650 rows); 651 scr_memcpyw(q, save, array3_size(logo_lines, new_cols, 2)); 652 vc->state.y += logo_lines; 653 vc->vc_pos += logo_lines * vc->vc_size_row; 654 kfree(save); 655 } 656 657 if (logo_shown == FBCON_LOGO_DONTSHOW) 658 return; 659 660 if (logo_lines > vc->vc_bottom) { 661 logo_shown = FBCON_LOGO_CANSHOW; 662 printk(KERN_INFO 663 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 664 } else { 665 logo_shown = FBCON_LOGO_DRAW; 666 vc->vc_top = logo_lines; 667 } 668 } 669 #endif /* MODULE */ 670 671 #ifdef CONFIG_FB_TILEBLITTING 672 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 673 { 674 struct fbcon_ops *ops = info->fbcon_par; 675 676 ops->p = &fb_display[vc->vc_num]; 677 678 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 679 fbcon_set_tileops(vc, info); 680 else { 681 fbcon_set_rotation(info); 682 fbcon_set_bitops(ops); 683 } 684 } 685 686 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 687 { 688 int err = 0; 689 690 if (info->flags & FBINFO_MISC_TILEBLITTING && 691 info->tileops->fb_get_tilemax(info) < charcount) 692 err = 1; 693 694 return err; 695 } 696 #else 697 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 698 { 699 struct fbcon_ops *ops = info->fbcon_par; 700 701 info->flags &= ~FBINFO_MISC_TILEBLITTING; 702 ops->p = &fb_display[vc->vc_num]; 703 fbcon_set_rotation(info); 704 fbcon_set_bitops(ops); 705 } 706 707 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 708 { 709 return 0; 710 } 711 712 #endif /* CONFIG_MISC_TILEBLITTING */ 713 714 715 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 716 int unit, int oldidx) 717 { 718 struct fbcon_ops *ops = NULL; 719 int err = 0; 720 721 if (!try_module_get(info->fbops->owner)) 722 err = -ENODEV; 723 724 if (!err && info->fbops->fb_open && 725 info->fbops->fb_open(info, 0)) 726 err = -ENODEV; 727 728 if (!err) { 729 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 730 if (!ops) 731 err = -ENOMEM; 732 } 733 734 if (!err) { 735 ops->cur_blink_jiffies = HZ / 5; 736 ops->info = info; 737 info->fbcon_par = ops; 738 739 if (vc) 740 set_blitting_type(vc, info); 741 } 742 743 if (err) { 744 con2fb_map[unit] = oldidx; 745 module_put(info->fbops->owner); 746 } 747 748 return err; 749 } 750 751 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 752 struct fb_info *newinfo, int unit, 753 int oldidx, int found) 754 { 755 struct fbcon_ops *ops = oldinfo->fbcon_par; 756 int err = 0, ret; 757 758 if (oldinfo->fbops->fb_release && 759 oldinfo->fbops->fb_release(oldinfo, 0)) { 760 con2fb_map[unit] = oldidx; 761 if (!found && newinfo->fbops->fb_release) 762 newinfo->fbops->fb_release(newinfo, 0); 763 if (!found) 764 module_put(newinfo->fbops->owner); 765 err = -ENODEV; 766 } 767 768 if (!err) { 769 fbcon_del_cursor_timer(oldinfo); 770 kfree(ops->cursor_state.mask); 771 kfree(ops->cursor_data); 772 kfree(ops->cursor_src); 773 kfree(ops->fontbuffer); 774 kfree(oldinfo->fbcon_par); 775 oldinfo->fbcon_par = NULL; 776 module_put(oldinfo->fbops->owner); 777 /* 778 If oldinfo and newinfo are driving the same hardware, 779 the fb_release() method of oldinfo may attempt to 780 restore the hardware state. This will leave the 781 newinfo in an undefined state. Thus, a call to 782 fb_set_par() may be needed for the newinfo. 783 */ 784 if (newinfo && newinfo->fbops->fb_set_par) { 785 ret = newinfo->fbops->fb_set_par(newinfo); 786 787 if (ret) 788 printk(KERN_ERR "con2fb_release_oldinfo: " 789 "detected unhandled fb_set_par error, " 790 "error code %d\n", ret); 791 } 792 } 793 794 return err; 795 } 796 797 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 798 int unit, int show_logo) 799 { 800 struct fbcon_ops *ops = info->fbcon_par; 801 int ret; 802 803 ops->currcon = fg_console; 804 805 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 806 ret = info->fbops->fb_set_par(info); 807 808 if (ret) 809 printk(KERN_ERR "con2fb_init_display: detected " 810 "unhandled fb_set_par error, " 811 "error code %d\n", ret); 812 } 813 814 ops->flags |= FBCON_FLAGS_INIT; 815 ops->graphics = 0; 816 fbcon_set_disp(info, &info->var, unit); 817 818 if (show_logo) { 819 struct vc_data *fg_vc = vc_cons[fg_console].d; 820 struct fb_info *fg_info = 821 registered_fb[con2fb_map[fg_console]]; 822 823 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 824 fg_vc->vc_rows, fg_vc->vc_cols, 825 fg_vc->vc_rows); 826 } 827 828 update_screen(vc_cons[fg_console].d); 829 } 830 831 /** 832 * set_con2fb_map - map console to frame buffer device 833 * @unit: virtual console number to map 834 * @newidx: frame buffer index to map virtual console to 835 * @user: user request 836 * 837 * Maps a virtual console @unit to a frame buffer device 838 * @newidx. 839 * 840 * This should be called with the console lock held. 841 */ 842 static int set_con2fb_map(int unit, int newidx, int user) 843 { 844 struct vc_data *vc = vc_cons[unit].d; 845 int oldidx = con2fb_map[unit]; 846 struct fb_info *info = registered_fb[newidx]; 847 struct fb_info *oldinfo = NULL; 848 int found, err = 0; 849 850 WARN_CONSOLE_UNLOCKED(); 851 852 if (oldidx == newidx) 853 return 0; 854 855 if (!info) 856 return -EINVAL; 857 858 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 859 info_idx = newidx; 860 return do_fbcon_takeover(0); 861 } 862 863 if (oldidx != -1) 864 oldinfo = registered_fb[oldidx]; 865 866 found = search_fb_in_map(newidx); 867 868 con2fb_map[unit] = newidx; 869 if (!err && !found) 870 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 871 872 /* 873 * If old fb is not mapped to any of the consoles, 874 * fbcon should release it. 875 */ 876 if (!err && oldinfo && !search_fb_in_map(oldidx)) 877 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 878 found); 879 880 if (!err) { 881 int show_logo = (fg_console == 0 && !user && 882 logo_shown != FBCON_LOGO_DONTSHOW); 883 884 if (!found) 885 fbcon_add_cursor_timer(info); 886 con2fb_map_boot[unit] = newidx; 887 con2fb_init_display(vc, info, unit, show_logo); 888 } 889 890 if (!search_fb_in_map(info_idx)) 891 info_idx = newidx; 892 893 return err; 894 } 895 896 /* 897 * Low Level Operations 898 */ 899 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 900 static int var_to_display(struct fbcon_display *disp, 901 struct fb_var_screeninfo *var, 902 struct fb_info *info) 903 { 904 disp->xres_virtual = var->xres_virtual; 905 disp->yres_virtual = var->yres_virtual; 906 disp->bits_per_pixel = var->bits_per_pixel; 907 disp->grayscale = var->grayscale; 908 disp->nonstd = var->nonstd; 909 disp->accel_flags = var->accel_flags; 910 disp->height = var->height; 911 disp->width = var->width; 912 disp->red = var->red; 913 disp->green = var->green; 914 disp->blue = var->blue; 915 disp->transp = var->transp; 916 disp->rotate = var->rotate; 917 disp->mode = fb_match_mode(var, &info->modelist); 918 if (disp->mode == NULL) 919 /* This should not happen */ 920 return -EINVAL; 921 return 0; 922 } 923 924 static void display_to_var(struct fb_var_screeninfo *var, 925 struct fbcon_display *disp) 926 { 927 fb_videomode_to_var(var, disp->mode); 928 var->xres_virtual = disp->xres_virtual; 929 var->yres_virtual = disp->yres_virtual; 930 var->bits_per_pixel = disp->bits_per_pixel; 931 var->grayscale = disp->grayscale; 932 var->nonstd = disp->nonstd; 933 var->accel_flags = disp->accel_flags; 934 var->height = disp->height; 935 var->width = disp->width; 936 var->red = disp->red; 937 var->green = disp->green; 938 var->blue = disp->blue; 939 var->transp = disp->transp; 940 var->rotate = disp->rotate; 941 } 942 943 static const char *fbcon_startup(void) 944 { 945 const char *display_desc = "frame buffer device"; 946 struct fbcon_display *p = &fb_display[fg_console]; 947 struct vc_data *vc = vc_cons[fg_console].d; 948 const struct font_desc *font = NULL; 949 struct module *owner; 950 struct fb_info *info = NULL; 951 struct fbcon_ops *ops; 952 int rows, cols; 953 954 /* 955 * If num_registered_fb is zero, this is a call for the dummy part. 956 * The frame buffer devices weren't initialized yet. 957 */ 958 if (!num_registered_fb || info_idx == -1) 959 return display_desc; 960 /* 961 * Instead of blindly using registered_fb[0], we use info_idx, set by 962 * fb_console_init(); 963 */ 964 info = registered_fb[info_idx]; 965 if (!info) 966 return NULL; 967 968 owner = info->fbops->owner; 969 if (!try_module_get(owner)) 970 return NULL; 971 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 972 module_put(owner); 973 return NULL; 974 } 975 976 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 977 if (!ops) { 978 module_put(owner); 979 return NULL; 980 } 981 982 ops->currcon = -1; 983 ops->graphics = 1; 984 ops->cur_rotate = -1; 985 ops->cur_blink_jiffies = HZ / 5; 986 ops->info = info; 987 info->fbcon_par = ops; 988 989 p->con_rotate = initial_rotation; 990 if (p->con_rotate == -1) 991 p->con_rotate = info->fbcon_rotate_hint; 992 if (p->con_rotate == -1) 993 p->con_rotate = FB_ROTATE_UR; 994 995 set_blitting_type(vc, info); 996 997 /* Setup default font */ 998 if (!p->fontdata && !vc->vc_font.data) { 999 if (!fontname[0] || !(font = find_font(fontname))) 1000 font = get_default_font(info->var.xres, 1001 info->var.yres, 1002 info->pixmap.blit_x, 1003 info->pixmap.blit_y); 1004 vc->vc_font.width = font->width; 1005 vc->vc_font.height = font->height; 1006 vc->vc_font.data = (void *)(p->fontdata = font->data); 1007 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1008 } else { 1009 p->fontdata = vc->vc_font.data; 1010 } 1011 1012 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1013 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1014 cols /= vc->vc_font.width; 1015 rows /= vc->vc_font.height; 1016 vc_resize(vc, cols, rows); 1017 1018 DPRINTK("mode: %s\n", info->fix.id); 1019 DPRINTK("visual: %d\n", info->fix.visual); 1020 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1021 info->var.yres, 1022 info->var.bits_per_pixel); 1023 1024 fbcon_add_cursor_timer(info); 1025 return display_desc; 1026 } 1027 1028 static void fbcon_init(struct vc_data *vc, int init) 1029 { 1030 struct fb_info *info; 1031 struct fbcon_ops *ops; 1032 struct vc_data **default_mode = vc->vc_display_fg; 1033 struct vc_data *svc = *default_mode; 1034 struct fbcon_display *t, *p = &fb_display[vc->vc_num]; 1035 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1036 int cap, ret; 1037 1038 if (WARN_ON(info_idx == -1)) 1039 return; 1040 1041 if (con2fb_map[vc->vc_num] == -1) 1042 con2fb_map[vc->vc_num] = info_idx; 1043 1044 info = registered_fb[con2fb_map[vc->vc_num]]; 1045 cap = info->flags; 1046 1047 if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET) 1048 logo_shown = FBCON_LOGO_DONTSHOW; 1049 1050 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1051 (info->fix.type == FB_TYPE_TEXT)) 1052 logo = 0; 1053 1054 if (var_to_display(p, &info->var, info)) 1055 return; 1056 1057 if (!info->fbcon_par) 1058 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1059 1060 /* If we are not the first console on this 1061 fb, copy the font from that console */ 1062 t = &fb_display[fg_console]; 1063 if (!p->fontdata) { 1064 if (t->fontdata) { 1065 struct vc_data *fvc = vc_cons[fg_console].d; 1066 1067 vc->vc_font.data = (void *)(p->fontdata = 1068 fvc->vc_font.data); 1069 vc->vc_font.width = fvc->vc_font.width; 1070 vc->vc_font.height = fvc->vc_font.height; 1071 p->userfont = t->userfont; 1072 1073 if (p->userfont) 1074 REFCOUNT(p->fontdata)++; 1075 } else { 1076 const struct font_desc *font = NULL; 1077 1078 if (!fontname[0] || !(font = find_font(fontname))) 1079 font = get_default_font(info->var.xres, 1080 info->var.yres, 1081 info->pixmap.blit_x, 1082 info->pixmap.blit_y); 1083 vc->vc_font.width = font->width; 1084 vc->vc_font.height = font->height; 1085 vc->vc_font.data = (void *)(p->fontdata = font->data); 1086 vc->vc_font.charcount = 256; /* FIXME Need to 1087 support more fonts */ 1088 } 1089 } 1090 1091 if (p->userfont) 1092 charcnt = FNTCHARCNT(p->fontdata); 1093 1094 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1095 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1096 if (charcnt == 256) { 1097 vc->vc_hi_font_mask = 0; 1098 } else { 1099 vc->vc_hi_font_mask = 0x100; 1100 if (vc->vc_can_do_color) 1101 vc->vc_complement_mask <<= 1; 1102 } 1103 1104 if (!*svc->vc_uni_pagedir_loc) 1105 con_set_default_unimap(svc); 1106 if (!*vc->vc_uni_pagedir_loc) 1107 con_copy_unimap(vc, svc); 1108 1109 ops = info->fbcon_par; 1110 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1111 1112 p->con_rotate = initial_rotation; 1113 if (p->con_rotate == -1) 1114 p->con_rotate = info->fbcon_rotate_hint; 1115 if (p->con_rotate == -1) 1116 p->con_rotate = FB_ROTATE_UR; 1117 1118 set_blitting_type(vc, info); 1119 1120 cols = vc->vc_cols; 1121 rows = vc->vc_rows; 1122 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1123 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1124 new_cols /= vc->vc_font.width; 1125 new_rows /= vc->vc_font.height; 1126 1127 /* 1128 * We must always set the mode. The mode of the previous console 1129 * driver could be in the same resolution but we are using different 1130 * hardware so we have to initialize the hardware. 1131 * 1132 * We need to do it in fbcon_init() to prevent screen corruption. 1133 */ 1134 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1135 if (info->fbops->fb_set_par && 1136 !(ops->flags & FBCON_FLAGS_INIT)) { 1137 ret = info->fbops->fb_set_par(info); 1138 1139 if (ret) 1140 printk(KERN_ERR "fbcon_init: detected " 1141 "unhandled fb_set_par error, " 1142 "error code %d\n", ret); 1143 } 1144 1145 ops->flags |= FBCON_FLAGS_INIT; 1146 } 1147 1148 ops->graphics = 0; 1149 1150 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1151 !(cap & FBINFO_HWACCEL_DISABLED)) 1152 p->scrollmode = SCROLL_MOVE; 1153 else /* default to something safe */ 1154 p->scrollmode = SCROLL_REDRAW; 1155 1156 /* 1157 * ++guenther: console.c:vc_allocate() relies on initializing 1158 * vc_{cols,rows}, but we must not set those if we are only 1159 * resizing the console. 1160 */ 1161 if (init) { 1162 vc->vc_cols = new_cols; 1163 vc->vc_rows = new_rows; 1164 } else 1165 vc_resize(vc, new_cols, new_rows); 1166 1167 if (logo) 1168 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1169 1170 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1171 ops->rotate = FB_ROTATE_UR; 1172 set_blitting_type(vc, info); 1173 } 1174 1175 ops->p = &fb_display[fg_console]; 1176 } 1177 1178 static void fbcon_free_font(struct fbcon_display *p, bool freefont) 1179 { 1180 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1181 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1182 p->fontdata = NULL; 1183 p->userfont = 0; 1184 } 1185 1186 static void set_vc_hi_font(struct vc_data *vc, bool set); 1187 1188 static void fbcon_deinit(struct vc_data *vc) 1189 { 1190 struct fbcon_display *p = &fb_display[vc->vc_num]; 1191 struct fb_info *info; 1192 struct fbcon_ops *ops; 1193 int idx; 1194 bool free_font = true; 1195 1196 idx = con2fb_map[vc->vc_num]; 1197 1198 if (idx == -1) 1199 goto finished; 1200 1201 info = registered_fb[idx]; 1202 1203 if (!info) 1204 goto finished; 1205 1206 if (info->flags & FBINFO_MISC_FIRMWARE) 1207 free_font = false; 1208 ops = info->fbcon_par; 1209 1210 if (!ops) 1211 goto finished; 1212 1213 if (con_is_visible(vc)) 1214 fbcon_del_cursor_timer(info); 1215 1216 ops->flags &= ~FBCON_FLAGS_INIT; 1217 finished: 1218 1219 fbcon_free_font(p, free_font); 1220 if (free_font) 1221 vc->vc_font.data = NULL; 1222 1223 if (vc->vc_hi_font_mask && vc->vc_screenbuf) 1224 set_vc_hi_font(vc, false); 1225 1226 if (!con_is_bound(&fb_con)) 1227 fbcon_exit(); 1228 1229 if (vc->vc_num == logo_shown) 1230 logo_shown = FBCON_LOGO_CANSHOW; 1231 1232 return; 1233 } 1234 1235 /* ====================================================================== */ 1236 1237 /* fbcon_XXX routines - interface used by the world 1238 * 1239 * This system is now divided into two levels because of complications 1240 * caused by hardware scrolling. Top level functions: 1241 * 1242 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1243 * 1244 * handles y values in range [0, scr_height-1] that correspond to real 1245 * screen positions. y_wrap shift means that first line of bitmap may be 1246 * anywhere on this display. These functions convert lineoffsets to 1247 * bitmap offsets and deal with the wrap-around case by splitting blits. 1248 * 1249 * fbcon_bmove_physical_8() -- These functions fast implementations 1250 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1251 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1252 * 1253 * WARNING: 1254 * 1255 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1256 * Implies should only really hardware scroll in rows. Only reason for 1257 * restriction is simplicity & efficiency at the moment. 1258 */ 1259 1260 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1261 int width) 1262 { 1263 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1264 struct fbcon_ops *ops = info->fbcon_par; 1265 1266 struct fbcon_display *p = &fb_display[vc->vc_num]; 1267 u_int y_break; 1268 1269 if (fbcon_is_inactive(vc, info)) 1270 return; 1271 1272 if (!height || !width) 1273 return; 1274 1275 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1276 vc->vc_top = 0; 1277 /* 1278 * If the font dimensions are not an integral of the display 1279 * dimensions then the ops->clear below won't end up clearing 1280 * the margins. Call clear_margins here in case the logo 1281 * bitmap stretched into the margin area. 1282 */ 1283 fbcon_clear_margins(vc, 0); 1284 } 1285 1286 /* Split blits that cross physical y_wrap boundary */ 1287 1288 y_break = p->vrows - p->yscroll; 1289 if (sy < y_break && sy + height - 1 >= y_break) { 1290 u_int b = y_break - sy; 1291 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1292 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1293 width); 1294 } else 1295 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1296 } 1297 1298 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1299 int count, int ypos, int xpos) 1300 { 1301 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1302 struct fbcon_display *p = &fb_display[vc->vc_num]; 1303 struct fbcon_ops *ops = info->fbcon_par; 1304 1305 if (!fbcon_is_inactive(vc, info)) 1306 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1307 get_color(vc, info, scr_readw(s), 1), 1308 get_color(vc, info, scr_readw(s), 0)); 1309 } 1310 1311 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1312 { 1313 unsigned short chr; 1314 1315 scr_writew(c, &chr); 1316 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1317 } 1318 1319 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1320 { 1321 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1322 struct fbcon_ops *ops = info->fbcon_par; 1323 1324 if (!fbcon_is_inactive(vc, info)) 1325 ops->clear_margins(vc, info, margin_color, bottom_only); 1326 } 1327 1328 static void fbcon_cursor(struct vc_data *vc, int mode) 1329 { 1330 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1331 struct fbcon_ops *ops = info->fbcon_par; 1332 int c = scr_readw((u16 *) vc->vc_pos); 1333 1334 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1335 1336 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1337 return; 1338 1339 if (vc->vc_cursor_type & CUR_SW) 1340 fbcon_del_cursor_timer(info); 1341 else 1342 fbcon_add_cursor_timer(info); 1343 1344 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1345 1346 ops->cursor(vc, info, mode, get_color(vc, info, c, 1), 1347 get_color(vc, info, c, 0)); 1348 } 1349 1350 static int scrollback_phys_max = 0; 1351 static int scrollback_max = 0; 1352 static int scrollback_current = 0; 1353 1354 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1355 int unit) 1356 { 1357 struct fbcon_display *p, *t; 1358 struct vc_data **default_mode, *vc; 1359 struct vc_data *svc; 1360 struct fbcon_ops *ops = info->fbcon_par; 1361 int rows, cols, charcnt = 256; 1362 1363 p = &fb_display[unit]; 1364 1365 if (var_to_display(p, var, info)) 1366 return; 1367 1368 vc = vc_cons[unit].d; 1369 1370 if (!vc) 1371 return; 1372 1373 default_mode = vc->vc_display_fg; 1374 svc = *default_mode; 1375 t = &fb_display[svc->vc_num]; 1376 1377 if (!vc->vc_font.data) { 1378 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1379 vc->vc_font.width = (*default_mode)->vc_font.width; 1380 vc->vc_font.height = (*default_mode)->vc_font.height; 1381 p->userfont = t->userfont; 1382 if (p->userfont) 1383 REFCOUNT(p->fontdata)++; 1384 } 1385 if (p->userfont) 1386 charcnt = FNTCHARCNT(p->fontdata); 1387 1388 var->activate = FB_ACTIVATE_NOW; 1389 info->var.activate = var->activate; 1390 var->yoffset = info->var.yoffset; 1391 var->xoffset = info->var.xoffset; 1392 fb_set_var(info, var); 1393 ops->var = info->var; 1394 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1395 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1396 if (charcnt == 256) { 1397 vc->vc_hi_font_mask = 0; 1398 } else { 1399 vc->vc_hi_font_mask = 0x100; 1400 if (vc->vc_can_do_color) 1401 vc->vc_complement_mask <<= 1; 1402 } 1403 1404 if (!*svc->vc_uni_pagedir_loc) 1405 con_set_default_unimap(svc); 1406 if (!*vc->vc_uni_pagedir_loc) 1407 con_copy_unimap(vc, svc); 1408 1409 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1410 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1411 cols /= vc->vc_font.width; 1412 rows /= vc->vc_font.height; 1413 vc_resize(vc, cols, rows); 1414 1415 if (con_is_visible(vc)) { 1416 update_screen(vc); 1417 } 1418 } 1419 1420 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1421 { 1422 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1423 struct fbcon_ops *ops = info->fbcon_par; 1424 struct fbcon_display *p = &fb_display[vc->vc_num]; 1425 1426 p->yscroll += count; 1427 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1428 p->yscroll -= p->vrows; 1429 ops->var.xoffset = 0; 1430 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1431 ops->var.vmode |= FB_VMODE_YWRAP; 1432 ops->update_start(info); 1433 scrollback_max += count; 1434 if (scrollback_max > scrollback_phys_max) 1435 scrollback_max = scrollback_phys_max; 1436 scrollback_current = 0; 1437 } 1438 1439 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1440 { 1441 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1442 struct fbcon_ops *ops = info->fbcon_par; 1443 struct fbcon_display *p = &fb_display[vc->vc_num]; 1444 1445 p->yscroll -= count; 1446 if (p->yscroll < 0) /* Deal with wrap */ 1447 p->yscroll += p->vrows; 1448 ops->var.xoffset = 0; 1449 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1450 ops->var.vmode |= FB_VMODE_YWRAP; 1451 ops->update_start(info); 1452 scrollback_max -= count; 1453 if (scrollback_max < 0) 1454 scrollback_max = 0; 1455 scrollback_current = 0; 1456 } 1457 1458 static __inline__ void ypan_up(struct vc_data *vc, int count) 1459 { 1460 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1461 struct fbcon_display *p = &fb_display[vc->vc_num]; 1462 struct fbcon_ops *ops = info->fbcon_par; 1463 1464 p->yscroll += count; 1465 if (p->yscroll > p->vrows - vc->vc_rows) { 1466 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1467 0, 0, 0, vc->vc_rows, vc->vc_cols); 1468 p->yscroll -= p->vrows - vc->vc_rows; 1469 } 1470 1471 ops->var.xoffset = 0; 1472 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1473 ops->var.vmode &= ~FB_VMODE_YWRAP; 1474 ops->update_start(info); 1475 fbcon_clear_margins(vc, 1); 1476 scrollback_max += count; 1477 if (scrollback_max > scrollback_phys_max) 1478 scrollback_max = scrollback_phys_max; 1479 scrollback_current = 0; 1480 } 1481 1482 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1483 { 1484 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1485 struct fbcon_ops *ops = info->fbcon_par; 1486 struct fbcon_display *p = &fb_display[vc->vc_num]; 1487 1488 p->yscroll += count; 1489 1490 if (p->yscroll > p->vrows - vc->vc_rows) { 1491 p->yscroll -= p->vrows - vc->vc_rows; 1492 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1493 } 1494 1495 ops->var.xoffset = 0; 1496 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1497 ops->var.vmode &= ~FB_VMODE_YWRAP; 1498 ops->update_start(info); 1499 fbcon_clear_margins(vc, 1); 1500 scrollback_max += count; 1501 if (scrollback_max > scrollback_phys_max) 1502 scrollback_max = scrollback_phys_max; 1503 scrollback_current = 0; 1504 } 1505 1506 static __inline__ void ypan_down(struct vc_data *vc, int count) 1507 { 1508 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1509 struct fbcon_display *p = &fb_display[vc->vc_num]; 1510 struct fbcon_ops *ops = info->fbcon_par; 1511 1512 p->yscroll -= count; 1513 if (p->yscroll < 0) { 1514 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1515 0, vc->vc_rows, vc->vc_cols); 1516 p->yscroll += p->vrows - vc->vc_rows; 1517 } 1518 1519 ops->var.xoffset = 0; 1520 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1521 ops->var.vmode &= ~FB_VMODE_YWRAP; 1522 ops->update_start(info); 1523 fbcon_clear_margins(vc, 1); 1524 scrollback_max -= count; 1525 if (scrollback_max < 0) 1526 scrollback_max = 0; 1527 scrollback_current = 0; 1528 } 1529 1530 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1531 { 1532 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1533 struct fbcon_ops *ops = info->fbcon_par; 1534 struct fbcon_display *p = &fb_display[vc->vc_num]; 1535 1536 p->yscroll -= count; 1537 1538 if (p->yscroll < 0) { 1539 p->yscroll += p->vrows - vc->vc_rows; 1540 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1541 } 1542 1543 ops->var.xoffset = 0; 1544 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1545 ops->var.vmode &= ~FB_VMODE_YWRAP; 1546 ops->update_start(info); 1547 fbcon_clear_margins(vc, 1); 1548 scrollback_max -= count; 1549 if (scrollback_max < 0) 1550 scrollback_max = 0; 1551 scrollback_current = 0; 1552 } 1553 1554 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, 1555 int line, int count, int dy) 1556 { 1557 unsigned short *s = (unsigned short *) 1558 (vc->vc_origin + vc->vc_size_row * line); 1559 1560 while (count--) { 1561 unsigned short *start = s; 1562 unsigned short *le = advance_row(s, 1); 1563 unsigned short c; 1564 int x = 0; 1565 unsigned short attr = 1; 1566 1567 do { 1568 c = scr_readw(s); 1569 if (attr != (c & 0xff00)) { 1570 attr = c & 0xff00; 1571 if (s > start) { 1572 fbcon_putcs(vc, start, s - start, 1573 dy, x); 1574 x += s - start; 1575 start = s; 1576 } 1577 } 1578 console_conditional_schedule(); 1579 s++; 1580 } while (s < le); 1581 if (s > start) 1582 fbcon_putcs(vc, start, s - start, dy, x); 1583 console_conditional_schedule(); 1584 dy++; 1585 } 1586 } 1587 1588 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1589 struct fbcon_display *p, int line, int count, int ycount) 1590 { 1591 int offset = ycount * vc->vc_cols; 1592 unsigned short *d = (unsigned short *) 1593 (vc->vc_origin + vc->vc_size_row * line); 1594 unsigned short *s = d + offset; 1595 struct fbcon_ops *ops = info->fbcon_par; 1596 1597 while (count--) { 1598 unsigned short *start = s; 1599 unsigned short *le = advance_row(s, 1); 1600 unsigned short c; 1601 int x = 0; 1602 1603 do { 1604 c = scr_readw(s); 1605 1606 if (c == scr_readw(d)) { 1607 if (s > start) { 1608 ops->bmove(vc, info, line + ycount, x, 1609 line, x, 1, s-start); 1610 x += s - start + 1; 1611 start = s + 1; 1612 } else { 1613 x++; 1614 start++; 1615 } 1616 } 1617 1618 scr_writew(c, d); 1619 console_conditional_schedule(); 1620 s++; 1621 d++; 1622 } while (s < le); 1623 if (s > start) 1624 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1625 s-start); 1626 console_conditional_schedule(); 1627 if (ycount > 0) 1628 line++; 1629 else { 1630 line--; 1631 /* NOTE: We subtract two lines from these pointers */ 1632 s -= vc->vc_size_row; 1633 d -= vc->vc_size_row; 1634 } 1635 } 1636 } 1637 1638 static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p, 1639 int line, int count, int offset) 1640 { 1641 unsigned short *d = (unsigned short *) 1642 (vc->vc_origin + vc->vc_size_row * line); 1643 unsigned short *s = d + offset; 1644 1645 while (count--) { 1646 unsigned short *start = s; 1647 unsigned short *le = advance_row(s, 1); 1648 unsigned short c; 1649 int x = 0; 1650 unsigned short attr = 1; 1651 1652 do { 1653 c = scr_readw(s); 1654 if (attr != (c & 0xff00)) { 1655 attr = c & 0xff00; 1656 if (s > start) { 1657 fbcon_putcs(vc, start, s - start, 1658 line, x); 1659 x += s - start; 1660 start = s; 1661 } 1662 } 1663 if (c == scr_readw(d)) { 1664 if (s > start) { 1665 fbcon_putcs(vc, start, s - start, 1666 line, x); 1667 x += s - start + 1; 1668 start = s + 1; 1669 } else { 1670 x++; 1671 start++; 1672 } 1673 } 1674 scr_writew(c, d); 1675 console_conditional_schedule(); 1676 s++; 1677 d++; 1678 } while (s < le); 1679 if (s > start) 1680 fbcon_putcs(vc, start, s - start, line, x); 1681 console_conditional_schedule(); 1682 if (offset > 0) 1683 line++; 1684 else { 1685 line--; 1686 /* NOTE: We subtract two lines from these pointers */ 1687 s -= vc->vc_size_row; 1688 d -= vc->vc_size_row; 1689 } 1690 } 1691 } 1692 1693 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1694 enum con_scroll dir, unsigned int count) 1695 { 1696 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1697 struct fbcon_display *p = &fb_display[vc->vc_num]; 1698 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1699 1700 if (fbcon_is_inactive(vc, info)) 1701 return true; 1702 1703 fbcon_cursor(vc, CM_ERASE); 1704 1705 /* 1706 * ++Geert: Only use ywrap/ypan if the console is in text mode 1707 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1708 * whole screen (prevents flicker). 1709 */ 1710 1711 switch (dir) { 1712 case SM_UP: 1713 if (count > vc->vc_rows) /* Maximum realistic size */ 1714 count = vc->vc_rows; 1715 if (logo_shown >= 0) 1716 goto redraw_up; 1717 switch (p->scrollmode) { 1718 case SCROLL_MOVE: 1719 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1720 count); 1721 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1722 scr_memsetw((unsigned short *) (vc->vc_origin + 1723 vc->vc_size_row * 1724 (b - count)), 1725 vc->vc_video_erase_char, 1726 vc->vc_size_row * count); 1727 return true; 1728 1729 case SCROLL_WRAP_MOVE: 1730 if (b - t - count > 3 * vc->vc_rows >> 2) { 1731 if (t > 0) 1732 fbcon_bmove(vc, 0, 0, count, 0, t, 1733 vc->vc_cols); 1734 ywrap_up(vc, count); 1735 if (vc->vc_rows - b > 0) 1736 fbcon_bmove(vc, b - count, 0, b, 0, 1737 vc->vc_rows - b, 1738 vc->vc_cols); 1739 } else if (info->flags & FBINFO_READS_FAST) 1740 fbcon_bmove(vc, t + count, 0, t, 0, 1741 b - t - count, vc->vc_cols); 1742 else 1743 goto redraw_up; 1744 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1745 break; 1746 1747 case SCROLL_PAN_REDRAW: 1748 if ((p->yscroll + count <= 1749 2 * (p->vrows - vc->vc_rows)) 1750 && ((!scroll_partial && (b - t == vc->vc_rows)) 1751 || (scroll_partial 1752 && (b - t - count > 1753 3 * vc->vc_rows >> 2)))) { 1754 if (t > 0) 1755 fbcon_redraw_move(vc, p, 0, t, count); 1756 ypan_up_redraw(vc, t, count); 1757 if (vc->vc_rows - b > 0) 1758 fbcon_redraw_move(vc, p, b, 1759 vc->vc_rows - b, b); 1760 } else 1761 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1762 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1763 break; 1764 1765 case SCROLL_PAN_MOVE: 1766 if ((p->yscroll + count <= 1767 2 * (p->vrows - vc->vc_rows)) 1768 && ((!scroll_partial && (b - t == vc->vc_rows)) 1769 || (scroll_partial 1770 && (b - t - count > 1771 3 * vc->vc_rows >> 2)))) { 1772 if (t > 0) 1773 fbcon_bmove(vc, 0, 0, count, 0, t, 1774 vc->vc_cols); 1775 ypan_up(vc, count); 1776 if (vc->vc_rows - b > 0) 1777 fbcon_bmove(vc, b - count, 0, b, 0, 1778 vc->vc_rows - b, 1779 vc->vc_cols); 1780 } else if (info->flags & FBINFO_READS_FAST) 1781 fbcon_bmove(vc, t + count, 0, t, 0, 1782 b - t - count, vc->vc_cols); 1783 else 1784 goto redraw_up; 1785 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1786 break; 1787 1788 case SCROLL_REDRAW: 1789 redraw_up: 1790 fbcon_redraw(vc, p, t, b - t - count, 1791 count * vc->vc_cols); 1792 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1793 scr_memsetw((unsigned short *) (vc->vc_origin + 1794 vc->vc_size_row * 1795 (b - count)), 1796 vc->vc_video_erase_char, 1797 vc->vc_size_row * count); 1798 return true; 1799 } 1800 break; 1801 1802 case SM_DOWN: 1803 if (count > vc->vc_rows) /* Maximum realistic size */ 1804 count = vc->vc_rows; 1805 if (logo_shown >= 0) 1806 goto redraw_down; 1807 switch (p->scrollmode) { 1808 case SCROLL_MOVE: 1809 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1810 -count); 1811 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1812 scr_memsetw((unsigned short *) (vc->vc_origin + 1813 vc->vc_size_row * 1814 t), 1815 vc->vc_video_erase_char, 1816 vc->vc_size_row * count); 1817 return true; 1818 1819 case SCROLL_WRAP_MOVE: 1820 if (b - t - count > 3 * vc->vc_rows >> 2) { 1821 if (vc->vc_rows - b > 0) 1822 fbcon_bmove(vc, b, 0, b - count, 0, 1823 vc->vc_rows - b, 1824 vc->vc_cols); 1825 ywrap_down(vc, count); 1826 if (t > 0) 1827 fbcon_bmove(vc, count, 0, 0, 0, t, 1828 vc->vc_cols); 1829 } else if (info->flags & FBINFO_READS_FAST) 1830 fbcon_bmove(vc, t, 0, t + count, 0, 1831 b - t - count, vc->vc_cols); 1832 else 1833 goto redraw_down; 1834 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1835 break; 1836 1837 case SCROLL_PAN_MOVE: 1838 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1839 && ((!scroll_partial && (b - t == vc->vc_rows)) 1840 || (scroll_partial 1841 && (b - t - count > 1842 3 * vc->vc_rows >> 2)))) { 1843 if (vc->vc_rows - b > 0) 1844 fbcon_bmove(vc, b, 0, b - count, 0, 1845 vc->vc_rows - b, 1846 vc->vc_cols); 1847 ypan_down(vc, count); 1848 if (t > 0) 1849 fbcon_bmove(vc, count, 0, 0, 0, t, 1850 vc->vc_cols); 1851 } else if (info->flags & FBINFO_READS_FAST) 1852 fbcon_bmove(vc, t, 0, t + count, 0, 1853 b - t - count, vc->vc_cols); 1854 else 1855 goto redraw_down; 1856 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1857 break; 1858 1859 case SCROLL_PAN_REDRAW: 1860 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1861 && ((!scroll_partial && (b - t == vc->vc_rows)) 1862 || (scroll_partial 1863 && (b - t - count > 1864 3 * vc->vc_rows >> 2)))) { 1865 if (vc->vc_rows - b > 0) 1866 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 1867 b - count); 1868 ypan_down_redraw(vc, t, count); 1869 if (t > 0) 1870 fbcon_redraw_move(vc, p, count, t, 0); 1871 } else 1872 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 1873 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1874 break; 1875 1876 case SCROLL_REDRAW: 1877 redraw_down: 1878 fbcon_redraw(vc, p, b - 1, b - t - count, 1879 -count * vc->vc_cols); 1880 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1881 scr_memsetw((unsigned short *) (vc->vc_origin + 1882 vc->vc_size_row * 1883 t), 1884 vc->vc_video_erase_char, 1885 vc->vc_size_row * count); 1886 return true; 1887 } 1888 } 1889 return false; 1890 } 1891 1892 1893 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 1894 int height, int width) 1895 { 1896 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1897 struct fbcon_display *p = &fb_display[vc->vc_num]; 1898 1899 if (fbcon_is_inactive(vc, info)) 1900 return; 1901 1902 if (!width || !height) 1903 return; 1904 1905 /* Split blits that cross physical y_wrap case. 1906 * Pathological case involves 4 blits, better to use recursive 1907 * code rather than unrolled case 1908 * 1909 * Recursive invocations don't need to erase the cursor over and 1910 * over again, so we use fbcon_bmove_rec() 1911 */ 1912 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 1913 p->vrows - p->yscroll); 1914 } 1915 1916 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, 1917 int dy, int dx, int height, int width, u_int y_break) 1918 { 1919 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1920 struct fbcon_ops *ops = info->fbcon_par; 1921 u_int b; 1922 1923 if (sy < y_break && sy + height > y_break) { 1924 b = y_break - sy; 1925 if (dy < sy) { /* Avoid trashing self */ 1926 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 1927 y_break); 1928 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 1929 height - b, width, y_break); 1930 } else { 1931 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 1932 height - b, width, y_break); 1933 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 1934 y_break); 1935 } 1936 return; 1937 } 1938 1939 if (dy < y_break && dy + height > y_break) { 1940 b = y_break - dy; 1941 if (dy < sy) { /* Avoid trashing self */ 1942 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 1943 y_break); 1944 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 1945 height - b, width, y_break); 1946 } else { 1947 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 1948 height - b, width, y_break); 1949 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 1950 y_break); 1951 } 1952 return; 1953 } 1954 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 1955 height, width); 1956 } 1957 1958 static void updatescrollmode(struct fbcon_display *p, 1959 struct fb_info *info, 1960 struct vc_data *vc) 1961 { 1962 struct fbcon_ops *ops = info->fbcon_par; 1963 int fh = vc->vc_font.height; 1964 int cap = info->flags; 1965 u16 t = 0; 1966 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 1967 info->fix.xpanstep); 1968 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 1969 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1970 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 1971 info->var.xres_virtual); 1972 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 1973 divides(ypan, vc->vc_font.height) && vyres > yres; 1974 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 1975 divides(ywrap, vc->vc_font.height) && 1976 divides(vc->vc_font.height, vyres) && 1977 divides(vc->vc_font.height, yres); 1978 int reading_fast = cap & FBINFO_READS_FAST; 1979 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 1980 !(cap & FBINFO_HWACCEL_DISABLED); 1981 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 1982 !(cap & FBINFO_HWACCEL_DISABLED); 1983 1984 p->vrows = vyres/fh; 1985 if (yres > (fh * (vc->vc_rows + 1))) 1986 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 1987 if ((yres % fh) && (vyres % fh < yres % fh)) 1988 p->vrows--; 1989 1990 if (good_wrap || good_pan) { 1991 if (reading_fast || fast_copyarea) 1992 p->scrollmode = good_wrap ? 1993 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 1994 else 1995 p->scrollmode = good_wrap ? SCROLL_REDRAW : 1996 SCROLL_PAN_REDRAW; 1997 } else { 1998 if (reading_fast || (fast_copyarea && !fast_imageblit)) 1999 p->scrollmode = SCROLL_MOVE; 2000 else 2001 p->scrollmode = SCROLL_REDRAW; 2002 } 2003 } 2004 2005 #define PITCH(w) (((w) + 7) >> 3) 2006 #define CALC_FONTSZ(h, p, c) ((h) * (p) * (c)) /* size = height * pitch * charcount */ 2007 2008 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2009 unsigned int height, unsigned int user) 2010 { 2011 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2012 struct fbcon_ops *ops = info->fbcon_par; 2013 struct fbcon_display *p = &fb_display[vc->vc_num]; 2014 struct fb_var_screeninfo var = info->var; 2015 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2016 2017 if (p->userfont && FNTSIZE(vc->vc_font.data)) { 2018 int size; 2019 int pitch = PITCH(vc->vc_font.width); 2020 2021 /* 2022 * If user font, ensure that a possible change to user font 2023 * height or width will not allow a font data out-of-bounds access. 2024 * NOTE: must use original charcount in calculation as font 2025 * charcount can change and cannot be used to determine the 2026 * font data allocated size. 2027 */ 2028 if (pitch <= 0) 2029 return -EINVAL; 2030 size = CALC_FONTSZ(vc->vc_font.height, pitch, FNTCHARCNT(vc->vc_font.data)); 2031 if (size > FNTSIZE(vc->vc_font.data)) 2032 return -EINVAL; 2033 } 2034 2035 virt_w = FBCON_SWAP(ops->rotate, width, height); 2036 virt_h = FBCON_SWAP(ops->rotate, height, width); 2037 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2038 vc->vc_font.height); 2039 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2040 vc->vc_font.width); 2041 var.xres = virt_w * virt_fw; 2042 var.yres = virt_h * virt_fh; 2043 x_diff = info->var.xres - var.xres; 2044 y_diff = info->var.yres - var.yres; 2045 if (x_diff < 0 || x_diff > virt_fw || 2046 y_diff < 0 || y_diff > virt_fh) { 2047 const struct fb_videomode *mode; 2048 2049 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2050 mode = fb_find_best_mode(&var, &info->modelist); 2051 if (mode == NULL) 2052 return -EINVAL; 2053 display_to_var(&var, p); 2054 fb_videomode_to_var(&var, mode); 2055 2056 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2057 return -EINVAL; 2058 2059 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2060 if (con_is_visible(vc)) { 2061 var.activate = FB_ACTIVATE_NOW | 2062 FB_ACTIVATE_FORCE; 2063 fb_set_var(info, &var); 2064 } 2065 var_to_display(p, &info->var, info); 2066 ops->var = info->var; 2067 } 2068 updatescrollmode(p, info, vc); 2069 return 0; 2070 } 2071 2072 static int fbcon_switch(struct vc_data *vc) 2073 { 2074 struct fb_info *info, *old_info = NULL; 2075 struct fbcon_ops *ops; 2076 struct fbcon_display *p = &fb_display[vc->vc_num]; 2077 struct fb_var_screeninfo var; 2078 int i, ret, prev_console, charcnt = 256; 2079 2080 info = registered_fb[con2fb_map[vc->vc_num]]; 2081 ops = info->fbcon_par; 2082 2083 if (logo_shown >= 0) { 2084 struct vc_data *conp2 = vc_cons[logo_shown].d; 2085 2086 if (conp2->vc_top == logo_lines 2087 && conp2->vc_bottom == conp2->vc_rows) 2088 conp2->vc_top = 0; 2089 logo_shown = FBCON_LOGO_CANSHOW; 2090 } 2091 2092 prev_console = ops->currcon; 2093 if (prev_console != -1) 2094 old_info = registered_fb[con2fb_map[prev_console]]; 2095 /* 2096 * FIXME: If we have multiple fbdev's loaded, we need to 2097 * update all info->currcon. Perhaps, we can place this 2098 * in a centralized structure, but this might break some 2099 * drivers. 2100 * 2101 * info->currcon = vc->vc_num; 2102 */ 2103 for_each_registered_fb(i) { 2104 if (registered_fb[i]->fbcon_par) { 2105 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2106 2107 o->currcon = vc->vc_num; 2108 } 2109 } 2110 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2111 display_to_var(&var, p); 2112 var.activate = FB_ACTIVATE_NOW; 2113 2114 /* 2115 * make sure we don't unnecessarily trip the memcmp() 2116 * in fb_set_var() 2117 */ 2118 info->var.activate = var.activate; 2119 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2120 fb_set_var(info, &var); 2121 ops->var = info->var; 2122 2123 if (old_info != NULL && (old_info != info || 2124 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2125 if (info->fbops->fb_set_par) { 2126 ret = info->fbops->fb_set_par(info); 2127 2128 if (ret) 2129 printk(KERN_ERR "fbcon_switch: detected " 2130 "unhandled fb_set_par error, " 2131 "error code %d\n", ret); 2132 } 2133 2134 if (old_info != info) 2135 fbcon_del_cursor_timer(old_info); 2136 } 2137 2138 if (fbcon_is_inactive(vc, info) || 2139 ops->blank_state != FB_BLANK_UNBLANK) 2140 fbcon_del_cursor_timer(info); 2141 else 2142 fbcon_add_cursor_timer(info); 2143 2144 set_blitting_type(vc, info); 2145 ops->cursor_reset = 1; 2146 2147 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2148 ops->rotate = FB_ROTATE_UR; 2149 set_blitting_type(vc, info); 2150 } 2151 2152 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2153 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2154 2155 if (p->userfont) 2156 charcnt = FNTCHARCNT(vc->vc_font.data); 2157 2158 if (charcnt > 256) 2159 vc->vc_complement_mask <<= 1; 2160 2161 updatescrollmode(p, info, vc); 2162 2163 switch (p->scrollmode) { 2164 case SCROLL_WRAP_MOVE: 2165 scrollback_phys_max = p->vrows - vc->vc_rows; 2166 break; 2167 case SCROLL_PAN_MOVE: 2168 case SCROLL_PAN_REDRAW: 2169 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2170 if (scrollback_phys_max < 0) 2171 scrollback_phys_max = 0; 2172 break; 2173 default: 2174 scrollback_phys_max = 0; 2175 break; 2176 } 2177 2178 scrollback_max = 0; 2179 scrollback_current = 0; 2180 2181 if (!fbcon_is_inactive(vc, info)) { 2182 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2183 ops->update_start(info); 2184 } 2185 2186 fbcon_set_palette(vc, color_table); 2187 fbcon_clear_margins(vc, 0); 2188 2189 if (logo_shown == FBCON_LOGO_DRAW) { 2190 2191 logo_shown = fg_console; 2192 /* This is protected above by initmem_freed */ 2193 fb_show_logo(info, ops->rotate); 2194 update_region(vc, 2195 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2196 vc->vc_size_row * (vc->vc_bottom - 2197 vc->vc_top) / 2); 2198 return 0; 2199 } 2200 return 1; 2201 } 2202 2203 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2204 int blank) 2205 { 2206 if (blank) { 2207 unsigned short charmask = vc->vc_hi_font_mask ? 2208 0x1ff : 0xff; 2209 unsigned short oldc; 2210 2211 oldc = vc->vc_video_erase_char; 2212 vc->vc_video_erase_char &= charmask; 2213 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2214 vc->vc_video_erase_char = oldc; 2215 } 2216 } 2217 2218 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2219 { 2220 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2221 struct fbcon_ops *ops = info->fbcon_par; 2222 2223 if (mode_switch) { 2224 struct fb_var_screeninfo var = info->var; 2225 2226 ops->graphics = 1; 2227 2228 if (!blank) { 2229 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE | 2230 FB_ACTIVATE_KD_TEXT; 2231 fb_set_var(info, &var); 2232 ops->graphics = 0; 2233 ops->var = info->var; 2234 } 2235 } 2236 2237 if (!fbcon_is_inactive(vc, info)) { 2238 if (ops->blank_state != blank) { 2239 ops->blank_state = blank; 2240 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2241 ops->cursor_flash = (!blank); 2242 2243 if (fb_blank(info, blank)) 2244 fbcon_generic_blank(vc, info, blank); 2245 } 2246 2247 if (!blank) 2248 update_screen(vc); 2249 } 2250 2251 if (mode_switch || fbcon_is_inactive(vc, info) || 2252 ops->blank_state != FB_BLANK_UNBLANK) 2253 fbcon_del_cursor_timer(info); 2254 else 2255 fbcon_add_cursor_timer(info); 2256 2257 return 0; 2258 } 2259 2260 static int fbcon_debug_enter(struct vc_data *vc) 2261 { 2262 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2263 struct fbcon_ops *ops = info->fbcon_par; 2264 2265 ops->save_graphics = ops->graphics; 2266 ops->graphics = 0; 2267 if (info->fbops->fb_debug_enter) 2268 info->fbops->fb_debug_enter(info); 2269 fbcon_set_palette(vc, color_table); 2270 return 0; 2271 } 2272 2273 static int fbcon_debug_leave(struct vc_data *vc) 2274 { 2275 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2276 struct fbcon_ops *ops = info->fbcon_par; 2277 2278 ops->graphics = ops->save_graphics; 2279 if (info->fbops->fb_debug_leave) 2280 info->fbops->fb_debug_leave(info); 2281 return 0; 2282 } 2283 2284 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2285 { 2286 u8 *fontdata = vc->vc_font.data; 2287 u8 *data = font->data; 2288 int i, j; 2289 2290 font->width = vc->vc_font.width; 2291 font->height = vc->vc_font.height; 2292 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2293 if (!font->data) 2294 return 0; 2295 2296 if (font->width <= 8) { 2297 j = vc->vc_font.height; 2298 if (font->charcount * j > FNTSIZE(fontdata)) 2299 return -EINVAL; 2300 2301 for (i = 0; i < font->charcount; i++) { 2302 memcpy(data, fontdata, j); 2303 memset(data + j, 0, 32 - j); 2304 data += 32; 2305 fontdata += j; 2306 } 2307 } else if (font->width <= 16) { 2308 j = vc->vc_font.height * 2; 2309 if (font->charcount * j > FNTSIZE(fontdata)) 2310 return -EINVAL; 2311 2312 for (i = 0; i < font->charcount; i++) { 2313 memcpy(data, fontdata, j); 2314 memset(data + j, 0, 64 - j); 2315 data += 64; 2316 fontdata += j; 2317 } 2318 } else if (font->width <= 24) { 2319 if (font->charcount * (vc->vc_font.height * sizeof(u32)) > FNTSIZE(fontdata)) 2320 return -EINVAL; 2321 2322 for (i = 0; i < font->charcount; i++) { 2323 for (j = 0; j < vc->vc_font.height; j++) { 2324 *data++ = fontdata[0]; 2325 *data++ = fontdata[1]; 2326 *data++ = fontdata[2]; 2327 fontdata += sizeof(u32); 2328 } 2329 memset(data, 0, 3 * (32 - j)); 2330 data += 3 * (32 - j); 2331 } 2332 } else { 2333 j = vc->vc_font.height * 4; 2334 if (font->charcount * j > FNTSIZE(fontdata)) 2335 return -EINVAL; 2336 2337 for (i = 0; i < font->charcount; i++) { 2338 memcpy(data, fontdata, j); 2339 memset(data + j, 0, 128 - j); 2340 data += 128; 2341 fontdata += j; 2342 } 2343 } 2344 return 0; 2345 } 2346 2347 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2348 static void set_vc_hi_font(struct vc_data *vc, bool set) 2349 { 2350 if (!set) { 2351 vc->vc_hi_font_mask = 0; 2352 if (vc->vc_can_do_color) { 2353 vc->vc_complement_mask >>= 1; 2354 vc->vc_s_complement_mask >>= 1; 2355 } 2356 2357 /* ++Edmund: reorder the attribute bits */ 2358 if (vc->vc_can_do_color) { 2359 unsigned short *cp = 2360 (unsigned short *) vc->vc_origin; 2361 int count = vc->vc_screenbuf_size / 2; 2362 unsigned short c; 2363 for (; count > 0; count--, cp++) { 2364 c = scr_readw(cp); 2365 scr_writew(((c & 0xfe00) >> 1) | 2366 (c & 0xff), cp); 2367 } 2368 c = vc->vc_video_erase_char; 2369 vc->vc_video_erase_char = 2370 ((c & 0xfe00) >> 1) | (c & 0xff); 2371 vc->vc_attr >>= 1; 2372 } 2373 } else { 2374 vc->vc_hi_font_mask = 0x100; 2375 if (vc->vc_can_do_color) { 2376 vc->vc_complement_mask <<= 1; 2377 vc->vc_s_complement_mask <<= 1; 2378 } 2379 2380 /* ++Edmund: reorder the attribute bits */ 2381 { 2382 unsigned short *cp = 2383 (unsigned short *) vc->vc_origin; 2384 int count = vc->vc_screenbuf_size / 2; 2385 unsigned short c; 2386 for (; count > 0; count--, cp++) { 2387 unsigned short newc; 2388 c = scr_readw(cp); 2389 if (vc->vc_can_do_color) 2390 newc = 2391 ((c & 0xff00) << 1) | (c & 2392 0xff); 2393 else 2394 newc = c & ~0x100; 2395 scr_writew(newc, cp); 2396 } 2397 c = vc->vc_video_erase_char; 2398 if (vc->vc_can_do_color) { 2399 vc->vc_video_erase_char = 2400 ((c & 0xff00) << 1) | (c & 0xff); 2401 vc->vc_attr <<= 1; 2402 } else 2403 vc->vc_video_erase_char = c & ~0x100; 2404 } 2405 } 2406 } 2407 2408 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2409 const u8 * data, int userfont) 2410 { 2411 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2412 struct fbcon_ops *ops = info->fbcon_par; 2413 struct fbcon_display *p = &fb_display[vc->vc_num]; 2414 int resize; 2415 int cnt; 2416 char *old_data = NULL; 2417 2418 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2419 if (p->userfont) 2420 old_data = vc->vc_font.data; 2421 if (userfont) 2422 cnt = FNTCHARCNT(data); 2423 else 2424 cnt = 256; 2425 vc->vc_font.data = (void *)(p->fontdata = data); 2426 if ((p->userfont = userfont)) 2427 REFCOUNT(data)++; 2428 vc->vc_font.width = w; 2429 vc->vc_font.height = h; 2430 if (vc->vc_hi_font_mask && cnt == 256) 2431 set_vc_hi_font(vc, false); 2432 else if (!vc->vc_hi_font_mask && cnt == 512) 2433 set_vc_hi_font(vc, true); 2434 2435 if (resize) { 2436 int cols, rows; 2437 2438 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2439 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2440 cols /= w; 2441 rows /= h; 2442 vc_resize(vc, cols, rows); 2443 } else if (con_is_visible(vc) 2444 && vc->vc_mode == KD_TEXT) { 2445 fbcon_clear_margins(vc, 0); 2446 update_screen(vc); 2447 } 2448 2449 if (old_data && (--REFCOUNT(old_data) == 0)) 2450 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2451 return 0; 2452 } 2453 2454 static int fbcon_copy_font(struct vc_data *vc, int con) 2455 { 2456 struct fbcon_display *od = &fb_display[con]; 2457 struct console_font *f = &vc->vc_font; 2458 2459 if (od->fontdata == f->data) 2460 return 0; /* already the same font... */ 2461 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2462 } 2463 2464 /* 2465 * User asked to set font; we are guaranteed that 2466 * a) width and height are in range 1..32 2467 * b) charcount does not exceed 512 2468 * but lets not assume that, since someone might someday want to use larger 2469 * fonts. And charcount of 512 is small for unicode support. 2470 * 2471 * However, user space gives the font in 32 rows , regardless of 2472 * actual font height. So a new API is needed if support for larger fonts 2473 * is ever implemented. 2474 */ 2475 2476 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, 2477 unsigned int flags) 2478 { 2479 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2480 unsigned charcount = font->charcount; 2481 int w = font->width; 2482 int h = font->height; 2483 int size; 2484 int i, csum; 2485 u8 *new_data, *data = font->data; 2486 int pitch = PITCH(font->width); 2487 2488 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2489 * If not this check should be changed to charcount < 256 */ 2490 if (charcount != 256 && charcount != 512) 2491 return -EINVAL; 2492 2493 /* Make sure drawing engine can handle the font */ 2494 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2495 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2496 return -EINVAL; 2497 2498 /* Make sure driver can handle the font length */ 2499 if (fbcon_invalid_charcount(info, charcount)) 2500 return -EINVAL; 2501 2502 size = CALC_FONTSZ(h, pitch, charcount); 2503 2504 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2505 2506 if (!new_data) 2507 return -ENOMEM; 2508 2509 new_data += FONT_EXTRA_WORDS * sizeof(int); 2510 FNTSIZE(new_data) = size; 2511 FNTCHARCNT(new_data) = charcount; 2512 REFCOUNT(new_data) = 0; /* usage counter */ 2513 for (i=0; i< charcount; i++) { 2514 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2515 } 2516 2517 /* Since linux has a nice crc32 function use it for counting font 2518 * checksums. */ 2519 csum = crc32(0, new_data, size); 2520 2521 FNTSUM(new_data) = csum; 2522 /* Check if the same font is on some other console already */ 2523 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2524 struct vc_data *tmp = vc_cons[i].d; 2525 2526 if (fb_display[i].userfont && 2527 fb_display[i].fontdata && 2528 FNTSUM(fb_display[i].fontdata) == csum && 2529 FNTSIZE(fb_display[i].fontdata) == size && 2530 tmp->vc_font.width == w && 2531 !memcmp(fb_display[i].fontdata, new_data, size)) { 2532 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2533 new_data = (u8 *)fb_display[i].fontdata; 2534 break; 2535 } 2536 } 2537 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2538 } 2539 2540 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2541 { 2542 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2543 const struct font_desc *f; 2544 2545 if (!name) 2546 f = get_default_font(info->var.xres, info->var.yres, 2547 info->pixmap.blit_x, info->pixmap.blit_y); 2548 else if (!(f = find_font(name))) 2549 return -ENOENT; 2550 2551 font->width = f->width; 2552 font->height = f->height; 2553 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2554 } 2555 2556 static u16 palette_red[16]; 2557 static u16 palette_green[16]; 2558 static u16 palette_blue[16]; 2559 2560 static struct fb_cmap palette_cmap = { 2561 0, 16, palette_red, palette_green, palette_blue, NULL 2562 }; 2563 2564 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2565 { 2566 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2567 int i, j, k, depth; 2568 u8 val; 2569 2570 if (fbcon_is_inactive(vc, info)) 2571 return; 2572 2573 if (!con_is_visible(vc)) 2574 return; 2575 2576 depth = fb_get_color_depth(&info->var, &info->fix); 2577 if (depth > 3) { 2578 for (i = j = 0; i < 16; i++) { 2579 k = table[i]; 2580 val = vc->vc_palette[j++]; 2581 palette_red[k] = (val << 8) | val; 2582 val = vc->vc_palette[j++]; 2583 palette_green[k] = (val << 8) | val; 2584 val = vc->vc_palette[j++]; 2585 palette_blue[k] = (val << 8) | val; 2586 } 2587 palette_cmap.len = 16; 2588 palette_cmap.start = 0; 2589 /* 2590 * If framebuffer is capable of less than 16 colors, 2591 * use default palette of fbcon. 2592 */ 2593 } else 2594 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2595 2596 fb_set_cmap(&palette_cmap, info); 2597 } 2598 2599 static u16 *fbcon_screen_pos(const struct vc_data *vc, int offset) 2600 { 2601 return (u16 *) (vc->vc_origin + offset); 2602 } 2603 2604 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2605 int *px, int *py) 2606 { 2607 unsigned long ret; 2608 int x, y; 2609 2610 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2611 unsigned long offset = (pos - vc->vc_origin) / 2; 2612 2613 x = offset % vc->vc_cols; 2614 y = offset / vc->vc_cols; 2615 ret = pos + (vc->vc_cols - x) * 2; 2616 } else { 2617 /* Should not happen */ 2618 x = y = 0; 2619 ret = vc->vc_origin; 2620 } 2621 if (px) 2622 *px = x; 2623 if (py) 2624 *py = y; 2625 return ret; 2626 } 2627 2628 /* As we might be inside of softback, we may work with non-contiguous buffer, 2629 that's why we have to use a separate routine. */ 2630 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2631 { 2632 while (cnt--) { 2633 u16 a = scr_readw(p); 2634 if (!vc->vc_can_do_color) 2635 a ^= 0x0800; 2636 else if (vc->vc_hi_font_mask == 0x100) 2637 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2638 (((a) & 0x0e00) << 4); 2639 else 2640 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2641 (((a) & 0x0700) << 4); 2642 scr_writew(a, p++); 2643 } 2644 } 2645 2646 void fbcon_suspended(struct fb_info *info) 2647 { 2648 struct vc_data *vc = NULL; 2649 struct fbcon_ops *ops = info->fbcon_par; 2650 2651 if (!ops || ops->currcon < 0) 2652 return; 2653 vc = vc_cons[ops->currcon].d; 2654 2655 /* Clear cursor, restore saved data */ 2656 fbcon_cursor(vc, CM_ERASE); 2657 } 2658 2659 void fbcon_resumed(struct fb_info *info) 2660 { 2661 struct vc_data *vc; 2662 struct fbcon_ops *ops = info->fbcon_par; 2663 2664 if (!ops || ops->currcon < 0) 2665 return; 2666 vc = vc_cons[ops->currcon].d; 2667 2668 update_screen(vc); 2669 } 2670 2671 static void fbcon_modechanged(struct fb_info *info) 2672 { 2673 struct fbcon_ops *ops = info->fbcon_par; 2674 struct vc_data *vc; 2675 struct fbcon_display *p; 2676 int rows, cols; 2677 2678 if (!ops || ops->currcon < 0) 2679 return; 2680 vc = vc_cons[ops->currcon].d; 2681 if (vc->vc_mode != KD_TEXT || 2682 registered_fb[con2fb_map[ops->currcon]] != info) 2683 return; 2684 2685 p = &fb_display[vc->vc_num]; 2686 set_blitting_type(vc, info); 2687 2688 if (con_is_visible(vc)) { 2689 var_to_display(p, &info->var, info); 2690 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2691 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2692 cols /= vc->vc_font.width; 2693 rows /= vc->vc_font.height; 2694 vc_resize(vc, cols, rows); 2695 updatescrollmode(p, info, vc); 2696 scrollback_max = 0; 2697 scrollback_current = 0; 2698 2699 if (!fbcon_is_inactive(vc, info)) { 2700 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2701 ops->update_start(info); 2702 } 2703 2704 fbcon_set_palette(vc, color_table); 2705 update_screen(vc); 2706 } 2707 } 2708 2709 static void fbcon_set_all_vcs(struct fb_info *info) 2710 { 2711 struct fbcon_ops *ops = info->fbcon_par; 2712 struct vc_data *vc; 2713 struct fbcon_display *p; 2714 int i, rows, cols, fg = -1; 2715 2716 if (!ops || ops->currcon < 0) 2717 return; 2718 2719 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2720 vc = vc_cons[i].d; 2721 if (!vc || vc->vc_mode != KD_TEXT || 2722 registered_fb[con2fb_map[i]] != info) 2723 continue; 2724 2725 if (con_is_visible(vc)) { 2726 fg = i; 2727 continue; 2728 } 2729 2730 p = &fb_display[vc->vc_num]; 2731 set_blitting_type(vc, info); 2732 var_to_display(p, &info->var, info); 2733 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2734 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2735 cols /= vc->vc_font.width; 2736 rows /= vc->vc_font.height; 2737 vc_resize(vc, cols, rows); 2738 } 2739 2740 if (fg != -1) 2741 fbcon_modechanged(info); 2742 } 2743 2744 2745 void fbcon_update_vcs(struct fb_info *info, bool all) 2746 { 2747 if (all) 2748 fbcon_set_all_vcs(info); 2749 else 2750 fbcon_modechanged(info); 2751 } 2752 EXPORT_SYMBOL(fbcon_update_vcs); 2753 2754 int fbcon_mode_deleted(struct fb_info *info, 2755 struct fb_videomode *mode) 2756 { 2757 struct fb_info *fb_info; 2758 struct fbcon_display *p; 2759 int i, j, found = 0; 2760 2761 /* before deletion, ensure that mode is not in use */ 2762 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2763 j = con2fb_map[i]; 2764 if (j == -1) 2765 continue; 2766 fb_info = registered_fb[j]; 2767 if (fb_info != info) 2768 continue; 2769 p = &fb_display[i]; 2770 if (!p || !p->mode) 2771 continue; 2772 if (fb_mode_is_equal(p->mode, mode)) { 2773 found = 1; 2774 break; 2775 } 2776 } 2777 return found; 2778 } 2779 2780 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 2781 static void fbcon_unbind(void) 2782 { 2783 int ret; 2784 2785 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 2786 fbcon_is_default); 2787 2788 if (!ret) 2789 fbcon_has_console_bind = 0; 2790 } 2791 #else 2792 static inline void fbcon_unbind(void) {} 2793 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 2794 2795 /* called with console_lock held */ 2796 void fbcon_fb_unbind(struct fb_info *info) 2797 { 2798 int i, new_idx = -1, ret = 0; 2799 int idx = info->node; 2800 2801 WARN_CONSOLE_UNLOCKED(); 2802 2803 if (!fbcon_has_console_bind) 2804 return; 2805 2806 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2807 if (con2fb_map[i] != idx && 2808 con2fb_map[i] != -1) { 2809 new_idx = con2fb_map[i]; 2810 break; 2811 } 2812 } 2813 2814 if (new_idx != -1) { 2815 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2816 if (con2fb_map[i] == idx) 2817 set_con2fb_map(i, new_idx, 0); 2818 } 2819 } else { 2820 struct fb_info *info = registered_fb[idx]; 2821 2822 /* This is sort of like set_con2fb_map, except it maps 2823 * the consoles to no device and then releases the 2824 * oldinfo to free memory and cancel the cursor blink 2825 * timer. I can imagine this just becoming part of 2826 * set_con2fb_map where new_idx is -1 2827 */ 2828 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2829 if (con2fb_map[i] == idx) { 2830 con2fb_map[i] = -1; 2831 if (!search_fb_in_map(idx)) { 2832 ret = con2fb_release_oldinfo(vc_cons[i].d, 2833 info, NULL, i, 2834 idx, 0); 2835 if (ret) { 2836 con2fb_map[i] = idx; 2837 return; 2838 } 2839 } 2840 } 2841 } 2842 fbcon_unbind(); 2843 } 2844 } 2845 2846 /* called with console_lock held */ 2847 void fbcon_fb_unregistered(struct fb_info *info) 2848 { 2849 int i, idx; 2850 2851 WARN_CONSOLE_UNLOCKED(); 2852 2853 if (deferred_takeover) 2854 return; 2855 2856 idx = info->node; 2857 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2858 if (con2fb_map[i] == idx) 2859 con2fb_map[i] = -1; 2860 } 2861 2862 if (idx == info_idx) { 2863 info_idx = -1; 2864 2865 for_each_registered_fb(i) { 2866 info_idx = i; 2867 break; 2868 } 2869 } 2870 2871 if (info_idx != -1) { 2872 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2873 if (con2fb_map[i] == -1) 2874 con2fb_map[i] = info_idx; 2875 } 2876 } 2877 2878 if (primary_device == idx) 2879 primary_device = -1; 2880 2881 if (!num_registered_fb) 2882 do_unregister_con_driver(&fb_con); 2883 } 2884 2885 void fbcon_remap_all(struct fb_info *info) 2886 { 2887 int i, idx = info->node; 2888 2889 console_lock(); 2890 if (deferred_takeover) { 2891 for (i = first_fb_vc; i <= last_fb_vc; i++) 2892 con2fb_map_boot[i] = idx; 2893 fbcon_map_override(); 2894 console_unlock(); 2895 return; 2896 } 2897 2898 for (i = first_fb_vc; i <= last_fb_vc; i++) 2899 set_con2fb_map(i, idx, 0); 2900 2901 if (con_is_bound(&fb_con)) { 2902 printk(KERN_INFO "fbcon: Remapping primary device, " 2903 "fb%i, to tty %i-%i\n", idx, 2904 first_fb_vc + 1, last_fb_vc + 1); 2905 info_idx = idx; 2906 } 2907 console_unlock(); 2908 } 2909 2910 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 2911 static void fbcon_select_primary(struct fb_info *info) 2912 { 2913 if (!map_override && primary_device == -1 && 2914 fb_is_primary_device(info)) { 2915 int i; 2916 2917 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 2918 info->fix.id, info->node); 2919 primary_device = info->node; 2920 2921 for (i = first_fb_vc; i <= last_fb_vc; i++) 2922 con2fb_map_boot[i] = primary_device; 2923 2924 if (con_is_bound(&fb_con)) { 2925 printk(KERN_INFO "fbcon: Remapping primary device, " 2926 "fb%i, to tty %i-%i\n", info->node, 2927 first_fb_vc + 1, last_fb_vc + 1); 2928 info_idx = primary_device; 2929 } 2930 } 2931 2932 } 2933 #else 2934 static inline void fbcon_select_primary(struct fb_info *info) 2935 { 2936 return; 2937 } 2938 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 2939 2940 /* called with console_lock held */ 2941 int fbcon_fb_registered(struct fb_info *info) 2942 { 2943 int ret = 0, i, idx; 2944 2945 WARN_CONSOLE_UNLOCKED(); 2946 2947 idx = info->node; 2948 fbcon_select_primary(info); 2949 2950 if (deferred_takeover) { 2951 pr_info("fbcon: Deferring console take-over\n"); 2952 return 0; 2953 } 2954 2955 if (info_idx == -1) { 2956 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2957 if (con2fb_map_boot[i] == idx) { 2958 info_idx = idx; 2959 break; 2960 } 2961 } 2962 2963 if (info_idx != -1) 2964 ret = do_fbcon_takeover(1); 2965 } else { 2966 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2967 if (con2fb_map_boot[i] == idx) 2968 set_con2fb_map(i, idx, 0); 2969 } 2970 } 2971 2972 return ret; 2973 } 2974 2975 void fbcon_fb_blanked(struct fb_info *info, int blank) 2976 { 2977 struct fbcon_ops *ops = info->fbcon_par; 2978 struct vc_data *vc; 2979 2980 if (!ops || ops->currcon < 0) 2981 return; 2982 2983 vc = vc_cons[ops->currcon].d; 2984 if (vc->vc_mode != KD_TEXT || 2985 registered_fb[con2fb_map[ops->currcon]] != info) 2986 return; 2987 2988 if (con_is_visible(vc)) { 2989 if (blank) 2990 do_blank_screen(0); 2991 else 2992 do_unblank_screen(0); 2993 } 2994 ops->blank_state = blank; 2995 } 2996 2997 void fbcon_new_modelist(struct fb_info *info) 2998 { 2999 int i; 3000 struct vc_data *vc; 3001 struct fb_var_screeninfo var; 3002 const struct fb_videomode *mode; 3003 3004 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3005 if (registered_fb[con2fb_map[i]] != info) 3006 continue; 3007 if (!fb_display[i].mode) 3008 continue; 3009 vc = vc_cons[i].d; 3010 display_to_var(&var, &fb_display[i]); 3011 mode = fb_find_nearest_mode(fb_display[i].mode, 3012 &info->modelist); 3013 fb_videomode_to_var(&var, mode); 3014 fbcon_set_disp(info, &var, vc->vc_num); 3015 } 3016 } 3017 3018 void fbcon_get_requirement(struct fb_info *info, 3019 struct fb_blit_caps *caps) 3020 { 3021 struct vc_data *vc; 3022 struct fbcon_display *p; 3023 3024 if (caps->flags) { 3025 int i, charcnt; 3026 3027 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3028 vc = vc_cons[i].d; 3029 if (vc && vc->vc_mode == KD_TEXT && 3030 info->node == con2fb_map[i]) { 3031 p = &fb_display[i]; 3032 caps->x |= 1 << (vc->vc_font.width - 1); 3033 caps->y |= 1 << (vc->vc_font.height - 1); 3034 charcnt = (p->userfont) ? 3035 FNTCHARCNT(p->fontdata) : 256; 3036 if (caps->len < charcnt) 3037 caps->len = charcnt; 3038 } 3039 } 3040 } else { 3041 vc = vc_cons[fg_console].d; 3042 3043 if (vc && vc->vc_mode == KD_TEXT && 3044 info->node == con2fb_map[fg_console]) { 3045 p = &fb_display[fg_console]; 3046 caps->x = 1 << (vc->vc_font.width - 1); 3047 caps->y = 1 << (vc->vc_font.height - 1); 3048 caps->len = (p->userfont) ? 3049 FNTCHARCNT(p->fontdata) : 256; 3050 } 3051 } 3052 } 3053 3054 int fbcon_set_con2fb_map_ioctl(void __user *argp) 3055 { 3056 struct fb_con2fbmap con2fb; 3057 int ret; 3058 3059 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3060 return -EFAULT; 3061 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3062 return -EINVAL; 3063 if (con2fb.framebuffer >= FB_MAX) 3064 return -EINVAL; 3065 if (!registered_fb[con2fb.framebuffer]) 3066 request_module("fb%d", con2fb.framebuffer); 3067 if (!registered_fb[con2fb.framebuffer]) { 3068 return -EINVAL; 3069 } 3070 3071 console_lock(); 3072 ret = set_con2fb_map(con2fb.console - 1, 3073 con2fb.framebuffer, 1); 3074 console_unlock(); 3075 3076 return ret; 3077 } 3078 3079 int fbcon_get_con2fb_map_ioctl(void __user *argp) 3080 { 3081 struct fb_con2fbmap con2fb; 3082 3083 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3084 return -EFAULT; 3085 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3086 return -EINVAL; 3087 3088 console_lock(); 3089 con2fb.framebuffer = con2fb_map[con2fb.console - 1]; 3090 console_unlock(); 3091 3092 return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; 3093 } 3094 3095 /* 3096 * The console `switch' structure for the frame buffer based console 3097 */ 3098 3099 static const struct consw fb_con = { 3100 .owner = THIS_MODULE, 3101 .con_startup = fbcon_startup, 3102 .con_init = fbcon_init, 3103 .con_deinit = fbcon_deinit, 3104 .con_clear = fbcon_clear, 3105 .con_putc = fbcon_putc, 3106 .con_putcs = fbcon_putcs, 3107 .con_cursor = fbcon_cursor, 3108 .con_scroll = fbcon_scroll, 3109 .con_switch = fbcon_switch, 3110 .con_blank = fbcon_blank, 3111 .con_font_set = fbcon_set_font, 3112 .con_font_get = fbcon_get_font, 3113 .con_font_default = fbcon_set_def_font, 3114 .con_font_copy = fbcon_copy_font, 3115 .con_set_palette = fbcon_set_palette, 3116 .con_invert_region = fbcon_invert_region, 3117 .con_screen_pos = fbcon_screen_pos, 3118 .con_getxy = fbcon_getxy, 3119 .con_resize = fbcon_resize, 3120 .con_debug_enter = fbcon_debug_enter, 3121 .con_debug_leave = fbcon_debug_leave, 3122 }; 3123 3124 static ssize_t store_rotate(struct device *device, 3125 struct device_attribute *attr, const char *buf, 3126 size_t count) 3127 { 3128 struct fb_info *info; 3129 int rotate, idx; 3130 char **last = NULL; 3131 3132 console_lock(); 3133 idx = con2fb_map[fg_console]; 3134 3135 if (idx == -1 || registered_fb[idx] == NULL) 3136 goto err; 3137 3138 info = registered_fb[idx]; 3139 rotate = simple_strtoul(buf, last, 0); 3140 fbcon_rotate(info, rotate); 3141 err: 3142 console_unlock(); 3143 return count; 3144 } 3145 3146 static ssize_t store_rotate_all(struct device *device, 3147 struct device_attribute *attr,const char *buf, 3148 size_t count) 3149 { 3150 struct fb_info *info; 3151 int rotate, idx; 3152 char **last = NULL; 3153 3154 console_lock(); 3155 idx = con2fb_map[fg_console]; 3156 3157 if (idx == -1 || registered_fb[idx] == NULL) 3158 goto err; 3159 3160 info = registered_fb[idx]; 3161 rotate = simple_strtoul(buf, last, 0); 3162 fbcon_rotate_all(info, rotate); 3163 err: 3164 console_unlock(); 3165 return count; 3166 } 3167 3168 static ssize_t show_rotate(struct device *device, 3169 struct device_attribute *attr,char *buf) 3170 { 3171 struct fb_info *info; 3172 int rotate = 0, idx; 3173 3174 console_lock(); 3175 idx = con2fb_map[fg_console]; 3176 3177 if (idx == -1 || registered_fb[idx] == NULL) 3178 goto err; 3179 3180 info = registered_fb[idx]; 3181 rotate = fbcon_get_rotate(info); 3182 err: 3183 console_unlock(); 3184 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3185 } 3186 3187 static ssize_t show_cursor_blink(struct device *device, 3188 struct device_attribute *attr, char *buf) 3189 { 3190 struct fb_info *info; 3191 struct fbcon_ops *ops; 3192 int idx, blink = -1; 3193 3194 console_lock(); 3195 idx = con2fb_map[fg_console]; 3196 3197 if (idx == -1 || registered_fb[idx] == NULL) 3198 goto err; 3199 3200 info = registered_fb[idx]; 3201 ops = info->fbcon_par; 3202 3203 if (!ops) 3204 goto err; 3205 3206 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3207 err: 3208 console_unlock(); 3209 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3210 } 3211 3212 static ssize_t store_cursor_blink(struct device *device, 3213 struct device_attribute *attr, 3214 const char *buf, size_t count) 3215 { 3216 struct fb_info *info; 3217 int blink, idx; 3218 char **last = NULL; 3219 3220 console_lock(); 3221 idx = con2fb_map[fg_console]; 3222 3223 if (idx == -1 || registered_fb[idx] == NULL) 3224 goto err; 3225 3226 info = registered_fb[idx]; 3227 3228 if (!info->fbcon_par) 3229 goto err; 3230 3231 blink = simple_strtoul(buf, last, 0); 3232 3233 if (blink) { 3234 fbcon_cursor_noblink = 0; 3235 fbcon_add_cursor_timer(info); 3236 } else { 3237 fbcon_cursor_noblink = 1; 3238 fbcon_del_cursor_timer(info); 3239 } 3240 3241 err: 3242 console_unlock(); 3243 return count; 3244 } 3245 3246 static struct device_attribute device_attrs[] = { 3247 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3248 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3249 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3250 store_cursor_blink), 3251 }; 3252 3253 static int fbcon_init_device(void) 3254 { 3255 int i, error = 0; 3256 3257 fbcon_has_sysfs = 1; 3258 3259 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3260 error = device_create_file(fbcon_device, &device_attrs[i]); 3261 3262 if (error) 3263 break; 3264 } 3265 3266 if (error) { 3267 while (--i >= 0) 3268 device_remove_file(fbcon_device, &device_attrs[i]); 3269 3270 fbcon_has_sysfs = 0; 3271 } 3272 3273 return 0; 3274 } 3275 3276 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3277 static void fbcon_register_existing_fbs(struct work_struct *work) 3278 { 3279 int i; 3280 3281 console_lock(); 3282 3283 for_each_registered_fb(i) 3284 fbcon_fb_registered(registered_fb[i]); 3285 3286 console_unlock(); 3287 } 3288 3289 static struct notifier_block fbcon_output_nb; 3290 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); 3291 3292 static int fbcon_output_notifier(struct notifier_block *nb, 3293 unsigned long action, void *data) 3294 { 3295 WARN_CONSOLE_UNLOCKED(); 3296 3297 pr_info("fbcon: Taking over console\n"); 3298 3299 dummycon_unregister_output_notifier(&fbcon_output_nb); 3300 deferred_takeover = false; 3301 logo_shown = FBCON_LOGO_DONTSHOW; 3302 3303 /* We may get called in atomic context */ 3304 schedule_work(&fbcon_deferred_takeover_work); 3305 3306 return NOTIFY_OK; 3307 } 3308 #endif 3309 3310 static void fbcon_start(void) 3311 { 3312 WARN_CONSOLE_UNLOCKED(); 3313 3314 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3315 if (conswitchp != &dummy_con) 3316 deferred_takeover = false; 3317 3318 if (deferred_takeover) { 3319 fbcon_output_nb.notifier_call = fbcon_output_notifier; 3320 dummycon_register_output_notifier(&fbcon_output_nb); 3321 return; 3322 } 3323 #endif 3324 3325 if (num_registered_fb) { 3326 int i; 3327 3328 for_each_registered_fb(i) { 3329 info_idx = i; 3330 break; 3331 } 3332 3333 do_fbcon_takeover(0); 3334 } 3335 } 3336 3337 static void fbcon_exit(void) 3338 { 3339 struct fb_info *info; 3340 int i, j, mapped; 3341 3342 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3343 if (deferred_takeover) { 3344 dummycon_unregister_output_notifier(&fbcon_output_nb); 3345 deferred_takeover = false; 3346 } 3347 #endif 3348 3349 for_each_registered_fb(i) { 3350 int pending = 0; 3351 3352 mapped = 0; 3353 info = registered_fb[i]; 3354 3355 if (info->queue.func) 3356 pending = cancel_work_sync(&info->queue); 3357 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3358 "no")); 3359 3360 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3361 if (con2fb_map[j] == i) { 3362 mapped = 1; 3363 con2fb_map[j] = -1; 3364 } 3365 } 3366 3367 if (mapped) { 3368 if (info->fbops->fb_release) 3369 info->fbops->fb_release(info, 0); 3370 module_put(info->fbops->owner); 3371 3372 if (info->fbcon_par) { 3373 struct fbcon_ops *ops = info->fbcon_par; 3374 3375 fbcon_del_cursor_timer(info); 3376 kfree(ops->cursor_src); 3377 kfree(ops->cursor_state.mask); 3378 kfree(info->fbcon_par); 3379 info->fbcon_par = NULL; 3380 } 3381 3382 if (info->queue.func == fb_flashcursor) 3383 info->queue.func = NULL; 3384 } 3385 } 3386 } 3387 3388 void __init fb_console_init(void) 3389 { 3390 int i; 3391 3392 console_lock(); 3393 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3394 "fbcon"); 3395 3396 if (IS_ERR(fbcon_device)) { 3397 printk(KERN_WARNING "Unable to create device " 3398 "for fbcon; errno = %ld\n", 3399 PTR_ERR(fbcon_device)); 3400 fbcon_device = NULL; 3401 } else 3402 fbcon_init_device(); 3403 3404 for (i = 0; i < MAX_NR_CONSOLES; i++) 3405 con2fb_map[i] = -1; 3406 3407 fbcon_start(); 3408 console_unlock(); 3409 } 3410 3411 #ifdef MODULE 3412 3413 static void __exit fbcon_deinit_device(void) 3414 { 3415 int i; 3416 3417 if (fbcon_has_sysfs) { 3418 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3419 device_remove_file(fbcon_device, &device_attrs[i]); 3420 3421 fbcon_has_sysfs = 0; 3422 } 3423 } 3424 3425 void __exit fb_console_exit(void) 3426 { 3427 console_lock(); 3428 fbcon_deinit_device(); 3429 device_destroy(fb_class, MKDEV(0, 0)); 3430 fbcon_exit(); 3431 do_unregister_con_driver(&fb_con); 3432 console_unlock(); 3433 } 3434 #endif 3435