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