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