1 /* 2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver 3 * 4 * Copyright (C) 1995 Geert Uytterhoeven 5 * 6 * 7 * This file is based on the original Amiga console driver (amicon.c): 8 * 9 * Copyright (C) 1993 Hamish Macdonald 10 * Greg Harp 11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk] 12 * 13 * with work by William Rucklidge (wjr@cs.cornell.edu) 14 * Geert Uytterhoeven 15 * Jes Sorensen (jds@kom.auc.dk) 16 * Martin Apel 17 * 18 * and on the original Atari console driver (atacon.c): 19 * 20 * Copyright (C) 1993 Bjoern Brauel 21 * Roman Hodek 22 * 23 * with work by Guenther Kelleter 24 * Martin Schaller 25 * Andreas Schwab 26 * 27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org) 28 * Smart redraw scrolling, arbitrary font width support, 512char font support 29 * and software scrollback added by 30 * Jakub Jelinek (jj@ultra.linux.cz) 31 * 32 * Random hacking by Martin Mares <mj@ucw.cz> 33 * 34 * 2001 - Documented with DocBook 35 * - Brad Douglas <brad@neruo.com> 36 * 37 * The low level operations for the various display memory organizations are 38 * now in separate source files. 39 * 40 * Currently the following organizations are supported: 41 * 42 * o afb Amiga bitplanes 43 * o cfb{2,4,8,16,24,32} Packed pixels 44 * o ilbm Amiga interleaved bitplanes 45 * o iplan2p[248] Atari interleaved bitplanes 46 * o mfb Monochrome 47 * o vga VGA characters/attributes 48 * 49 * To do: 50 * 51 * - Implement 16 plane mode (iplan2p16) 52 * 53 * 54 * This file is subject to the terms and conditions of the GNU General Public 55 * License. See the file COPYING in the main directory of this archive for 56 * more details. 57 */ 58 59 #undef FBCONDEBUG 60 61 #include <linux/module.h> 62 #include <linux/types.h> 63 #include <linux/fs.h> 64 #include <linux/kernel.h> 65 #include <linux/delay.h> /* MSch: for IRQ probe */ 66 #include <linux/console.h> 67 #include <linux/string.h> 68 #include <linux/kd.h> 69 #include <linux/slab.h> 70 #include <linux/fb.h> 71 #include <linux/fbcon.h> 72 #include <linux/vt_kern.h> 73 #include <linux/selection.h> 74 #include <linux/font.h> 75 #include <linux/smp.h> 76 #include <linux/init.h> 77 #include <linux/interrupt.h> 78 #include <linux/crc32.h> /* For counting font checksums */ 79 #include <linux/uaccess.h> 80 #include <asm/fb.h> 81 #include <asm/irq.h> 82 83 #include "fbcon.h" 84 85 #ifdef FBCONDEBUG 86 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args) 87 #else 88 # define DPRINTK(fmt, args...) 89 #endif 90 91 /* 92 * FIXME: Locking 93 * 94 * - fbcon state itself is protected by the console_lock, and the code does a 95 * pretty good job at making sure that lock is held everywhere it's needed. 96 * 97 * - access to the registered_fb array is entirely unprotected. This should use 98 * proper object lifetime handling, i.e. get/put_fb_info. This also means 99 * switching from indices to proper pointers for fb_info everywhere. 100 * 101 * - fbcon doesn't bother with fb_lock/unlock at all. This is buggy, since it 102 * means concurrent access to the same fbdev from both fbcon and userspace 103 * will blow up. To fix this all fbcon calls from fbmem.c need to be moved out 104 * of fb_lock/unlock protected sections, since otherwise we'll recurse and 105 * deadlock eventually. Aside: Due to these deadlock issues the fbdev code in 106 * fbmem.c cannot use locking asserts, and there's lots of callers which get 107 * the rules wrong, e.g. fbsysfs.c entirely missed fb_lock/unlock calls too. 108 */ 109 110 enum { 111 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */ 112 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */ 113 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */ 114 }; 115 116 static struct fbcon_display fb_display[MAX_NR_CONSOLES]; 117 118 static signed char con2fb_map[MAX_NR_CONSOLES]; 119 static signed char con2fb_map_boot[MAX_NR_CONSOLES]; 120 121 static int logo_lines; 122 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO 123 enums. */ 124 static int logo_shown = FBCON_LOGO_CANSHOW; 125 /* console mappings */ 126 static int first_fb_vc; 127 static int last_fb_vc = MAX_NR_CONSOLES - 1; 128 static int fbcon_is_default = 1; 129 static int primary_device = -1; 130 static int fbcon_has_console_bind; 131 132 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 133 static int map_override; 134 135 static inline void fbcon_map_override(void) 136 { 137 map_override = 1; 138 } 139 #else 140 static inline void fbcon_map_override(void) 141 { 142 } 143 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */ 144 145 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 146 static bool deferred_takeover = true; 147 #else 148 #define deferred_takeover false 149 #endif 150 151 /* font data */ 152 static char fontname[40]; 153 154 /* current fb_info */ 155 static int info_idx = -1; 156 157 /* console rotation */ 158 static int initial_rotation = -1; 159 static int fbcon_has_sysfs; 160 static int margin_color; 161 162 static const struct consw fb_con; 163 164 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) 165 166 static int fbcon_cursor_noblink; 167 168 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) 169 170 /* 171 * Interface used by the world 172 */ 173 174 static const char *fbcon_startup(void); 175 static void fbcon_init(struct vc_data *vc, int init); 176 static void fbcon_deinit(struct vc_data *vc); 177 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 178 int width); 179 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); 180 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 181 int count, int ypos, int xpos); 182 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); 183 static void fbcon_cursor(struct vc_data *vc, int mode); 184 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 185 int height, int width); 186 static int fbcon_switch(struct vc_data *vc); 187 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); 188 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table); 189 190 /* 191 * Internal routines 192 */ 193 static __inline__ void ywrap_up(struct vc_data *vc, int count); 194 static __inline__ void ywrap_down(struct vc_data *vc, int count); 195 static __inline__ void ypan_up(struct vc_data *vc, int count); 196 static __inline__ void ypan_down(struct vc_data *vc, int count); 197 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, 198 int dy, int dx, int height, int width, u_int y_break); 199 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 200 int unit); 201 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, 202 int line, int count, int dy); 203 static void fbcon_modechanged(struct fb_info *info); 204 static void fbcon_set_all_vcs(struct fb_info *info); 205 static void fbcon_start(void); 206 static void fbcon_exit(void); 207 static struct device *fbcon_device; 208 209 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION 210 static inline void fbcon_set_rotation(struct fb_info *info) 211 { 212 struct fbcon_ops *ops = info->fbcon_par; 213 214 if (!(info->flags & FBINFO_MISC_TILEBLITTING) && 215 ops->p->con_rotate < 4) 216 ops->rotate = ops->p->con_rotate; 217 else 218 ops->rotate = 0; 219 } 220 221 static void fbcon_rotate(struct fb_info *info, u32 rotate) 222 { 223 struct fbcon_ops *ops= info->fbcon_par; 224 struct fb_info *fb_info; 225 226 if (!ops || ops->currcon == -1) 227 return; 228 229 fb_info = registered_fb[con2fb_map[ops->currcon]]; 230 231 if (info == fb_info) { 232 struct fbcon_display *p = &fb_display[ops->currcon]; 233 234 if (rotate < 4) 235 p->con_rotate = rotate; 236 else 237 p->con_rotate = 0; 238 239 fbcon_modechanged(info); 240 } 241 } 242 243 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 244 { 245 struct fbcon_ops *ops = info->fbcon_par; 246 struct vc_data *vc; 247 struct fbcon_display *p; 248 int i; 249 250 if (!ops || ops->currcon < 0 || rotate > 3) 251 return; 252 253 for (i = first_fb_vc; i <= last_fb_vc; i++) { 254 vc = vc_cons[i].d; 255 if (!vc || vc->vc_mode != KD_TEXT || 256 registered_fb[con2fb_map[i]] != info) 257 continue; 258 259 p = &fb_display[vc->vc_num]; 260 p->con_rotate = rotate; 261 } 262 263 fbcon_set_all_vcs(info); 264 } 265 #else 266 static inline void fbcon_set_rotation(struct fb_info *info) 267 { 268 struct fbcon_ops *ops = info->fbcon_par; 269 270 ops->rotate = FB_ROTATE_UR; 271 } 272 273 static void fbcon_rotate(struct fb_info *info, u32 rotate) 274 { 275 return; 276 } 277 278 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 279 { 280 return; 281 } 282 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ 283 284 static int fbcon_get_rotate(struct fb_info *info) 285 { 286 struct fbcon_ops *ops = info->fbcon_par; 287 288 return (ops) ? ops->rotate : 0; 289 } 290 291 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) 292 { 293 struct fbcon_ops *ops = info->fbcon_par; 294 295 return (info->state != FBINFO_STATE_RUNNING || 296 vc->vc_mode != KD_TEXT || ops->graphics); 297 } 298 299 static int get_color(struct vc_data *vc, struct fb_info *info, 300 u16 c, int is_fg) 301 { 302 int depth = fb_get_color_depth(&info->var, &info->fix); 303 int color = 0; 304 305 if (console_blanked) { 306 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; 307 308 c = vc->vc_video_erase_char & charmask; 309 } 310 311 if (depth != 1) 312 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) 313 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); 314 315 switch (depth) { 316 case 1: 317 { 318 int col = mono_col(info); 319 /* 0 or 1 */ 320 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; 321 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; 322 323 if (console_blanked) 324 fg = bg; 325 326 color = (is_fg) ? fg : bg; 327 break; 328 } 329 case 2: 330 /* 331 * Scale down 16-colors to 4 colors. Default 4-color palette 332 * is grayscale. However, simply dividing the values by 4 333 * will not work, as colors 1, 2 and 3 will be scaled-down 334 * to zero rendering them invisible. So empirically convert 335 * colors to a sane 4-level grayscale. 336 */ 337 switch (color) { 338 case 0: 339 color = 0; /* black */ 340 break; 341 case 1 ... 6: 342 color = 2; /* white */ 343 break; 344 case 7 ... 8: 345 color = 1; /* gray */ 346 break; 347 default: 348 color = 3; /* intense white */ 349 break; 350 } 351 break; 352 case 3: 353 /* 354 * Last 8 entries of default 16-color palette is a more intense 355 * version of the first 8 (i.e., same chrominance, different 356 * luminance). 357 */ 358 color &= 7; 359 break; 360 } 361 362 363 return color; 364 } 365 366 static void fb_flashcursor(struct work_struct *work) 367 { 368 struct fb_info *info = container_of(work, struct fb_info, queue); 369 struct fbcon_ops *ops = info->fbcon_par; 370 struct vc_data *vc = NULL; 371 int c; 372 int mode; 373 int ret; 374 375 /* FIXME: we should sort out the unbind locking instead */ 376 /* instead we just fail to flash the cursor if we can't get 377 * the lock instead of blocking fbcon deinit */ 378 ret = console_trylock(); 379 if (ret == 0) 380 return; 381 382 if (ops && ops->currcon != -1) 383 vc = vc_cons[ops->currcon].d; 384 385 if (!vc || !con_is_visible(vc) || 386 registered_fb[con2fb_map[vc->vc_num]] != info || 387 vc->vc_deccm != 1) { 388 console_unlock(); 389 return; 390 } 391 392 c = scr_readw((u16 *) vc->vc_pos); 393 mode = (!ops->cursor_flash || ops->cursor_state.enable) ? 394 CM_ERASE : CM_DRAW; 395 ops->cursor(vc, info, mode, get_color(vc, info, c, 1), 396 get_color(vc, info, c, 0)); 397 console_unlock(); 398 } 399 400 static void cursor_timer_handler(struct timer_list *t) 401 { 402 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer); 403 struct fb_info *info = ops->info; 404 405 queue_work(system_power_efficient_wq, &info->queue); 406 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 407 } 408 409 static void fbcon_add_cursor_timer(struct fb_info *info) 410 { 411 struct fbcon_ops *ops = info->fbcon_par; 412 413 if ((!info->queue.func || info->queue.func == fb_flashcursor) && 414 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) && 415 !fbcon_cursor_noblink) { 416 if (!info->queue.func) 417 INIT_WORK(&info->queue, fb_flashcursor); 418 419 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0); 420 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 421 ops->flags |= FBCON_FLAGS_CURSOR_TIMER; 422 } 423 } 424 425 static void fbcon_del_cursor_timer(struct fb_info *info) 426 { 427 struct fbcon_ops *ops = info->fbcon_par; 428 429 if (info->queue.func == fb_flashcursor && 430 ops->flags & FBCON_FLAGS_CURSOR_TIMER) { 431 del_timer_sync(&ops->cursor_timer); 432 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; 433 } 434 } 435 436 #ifndef MODULE 437 static int __init fb_console_setup(char *this_opt) 438 { 439 char *options; 440 int i, j; 441 442 if (!this_opt || !*this_opt) 443 return 1; 444 445 while ((options = strsep(&this_opt, ",")) != NULL) { 446 if (!strncmp(options, "font:", 5)) { 447 strlcpy(fontname, options + 5, sizeof(fontname)); 448 continue; 449 } 450 451 if (!strncmp(options, "scrollback:", 11)) { 452 pr_warn("Ignoring scrollback size option\n"); 453 continue; 454 } 455 456 if (!strncmp(options, "map:", 4)) { 457 options += 4; 458 if (*options) { 459 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { 460 if (!options[j]) 461 j = 0; 462 con2fb_map_boot[i] = 463 (options[j++]-'0') % FB_MAX; 464 } 465 466 fbcon_map_override(); 467 } 468 continue; 469 } 470 471 if (!strncmp(options, "vc:", 3)) { 472 options += 3; 473 if (*options) 474 first_fb_vc = simple_strtoul(options, &options, 10) - 1; 475 if (first_fb_vc < 0) 476 first_fb_vc = 0; 477 if (*options++ == '-') 478 last_fb_vc = simple_strtoul(options, &options, 10) - 1; 479 fbcon_is_default = 0; 480 continue; 481 } 482 483 if (!strncmp(options, "rotate:", 7)) { 484 options += 7; 485 if (*options) 486 initial_rotation = simple_strtoul(options, &options, 0); 487 if (initial_rotation > 3) 488 initial_rotation = 0; 489 continue; 490 } 491 492 if (!strncmp(options, "margin:", 7)) { 493 options += 7; 494 if (*options) 495 margin_color = simple_strtoul(options, &options, 0); 496 continue; 497 } 498 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 499 if (!strcmp(options, "nodefer")) { 500 deferred_takeover = false; 501 continue; 502 } 503 #endif 504 505 if (!strncmp(options, "logo-pos:", 9)) { 506 options += 9; 507 if (!strcmp(options, "center")) 508 fb_center_logo = true; 509 continue; 510 } 511 512 if (!strncmp(options, "logo-count:", 11)) { 513 options += 11; 514 if (*options) 515 fb_logo_count = simple_strtol(options, &options, 0); 516 continue; 517 } 518 } 519 return 1; 520 } 521 522 __setup("fbcon=", fb_console_setup); 523 #endif 524 525 static int search_fb_in_map(int idx) 526 { 527 int i, retval = 0; 528 529 for (i = first_fb_vc; i <= last_fb_vc; i++) { 530 if (con2fb_map[i] == idx) 531 retval = 1; 532 } 533 return retval; 534 } 535 536 static int search_for_mapped_con(void) 537 { 538 int i, retval = 0; 539 540 for (i = first_fb_vc; i <= last_fb_vc; i++) { 541 if (con2fb_map[i] != -1) 542 retval = 1; 543 } 544 return retval; 545 } 546 547 static int do_fbcon_takeover(int show_logo) 548 { 549 int err, i; 550 551 if (!num_registered_fb) 552 return -ENODEV; 553 554 if (!show_logo) 555 logo_shown = FBCON_LOGO_DONTSHOW; 556 557 for (i = first_fb_vc; i <= last_fb_vc; i++) 558 con2fb_map[i] = info_idx; 559 560 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, 561 fbcon_is_default); 562 563 if (err) { 564 for (i = first_fb_vc; i <= last_fb_vc; i++) 565 con2fb_map[i] = -1; 566 info_idx = -1; 567 } else { 568 fbcon_has_console_bind = 1; 569 } 570 571 return err; 572 } 573 574 #ifdef MODULE 575 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 576 int cols, int rows, int new_cols, int new_rows) 577 { 578 logo_shown = FBCON_LOGO_DONTSHOW; 579 } 580 #else 581 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 582 int cols, int rows, int new_cols, int new_rows) 583 { 584 /* Need to make room for the logo */ 585 struct fbcon_ops *ops = info->fbcon_par; 586 int cnt, erase = vc->vc_video_erase_char, step; 587 unsigned short *save = NULL, *r, *q; 588 int logo_height; 589 590 if (info->fbops->owner) { 591 logo_shown = FBCON_LOGO_DONTSHOW; 592 return; 593 } 594 595 /* 596 * remove underline attribute from erase character 597 * if black and white framebuffer. 598 */ 599 if (fb_get_color_depth(&info->var, &info->fix) == 1) 600 erase &= ~0x400; 601 logo_height = fb_prepare_logo(info, ops->rotate); 602 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); 603 q = (unsigned short *) (vc->vc_origin + 604 vc->vc_size_row * rows); 605 step = logo_lines * cols; 606 for (r = q - logo_lines * cols; r < q; r++) 607 if (scr_readw(r) != vc->vc_video_erase_char) 608 break; 609 if (r != q && new_rows >= rows + logo_lines) { 610 save = kmalloc(array3_size(logo_lines, new_cols, 2), 611 GFP_KERNEL); 612 if (save) { 613 int i = cols < new_cols ? cols : new_cols; 614 scr_memsetw(save, erase, array3_size(logo_lines, new_cols, 2)); 615 r = q - step; 616 for (cnt = 0; cnt < logo_lines; cnt++, r += i) 617 scr_memcpyw(save + cnt * new_cols, r, 2 * i); 618 r = q; 619 } 620 } 621 if (r == q) { 622 /* We can scroll screen down */ 623 r = q - step - cols; 624 for (cnt = rows - logo_lines; cnt > 0; cnt--) { 625 scr_memcpyw(r + step, r, vc->vc_size_row); 626 r -= cols; 627 } 628 if (!save) { 629 int lines; 630 if (vc->state.y + logo_lines >= rows) 631 lines = rows - vc->state.y - 1; 632 else 633 lines = logo_lines; 634 vc->state.y += lines; 635 vc->vc_pos += lines * vc->vc_size_row; 636 } 637 } 638 scr_memsetw((unsigned short *) vc->vc_origin, 639 erase, 640 vc->vc_size_row * logo_lines); 641 642 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 643 fbcon_clear_margins(vc, 0); 644 update_screen(vc); 645 } 646 647 if (save) { 648 q = (unsigned short *) (vc->vc_origin + 649 vc->vc_size_row * 650 rows); 651 scr_memcpyw(q, save, array3_size(logo_lines, new_cols, 2)); 652 vc->state.y += logo_lines; 653 vc->vc_pos += logo_lines * vc->vc_size_row; 654 kfree(save); 655 } 656 657 if (logo_shown == FBCON_LOGO_DONTSHOW) 658 return; 659 660 if (logo_lines > vc->vc_bottom) { 661 logo_shown = FBCON_LOGO_CANSHOW; 662 printk(KERN_INFO 663 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 664 } else { 665 logo_shown = FBCON_LOGO_DRAW; 666 vc->vc_top = logo_lines; 667 } 668 } 669 #endif /* MODULE */ 670 671 #ifdef CONFIG_FB_TILEBLITTING 672 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 673 { 674 struct fbcon_ops *ops = info->fbcon_par; 675 676 ops->p = &fb_display[vc->vc_num]; 677 678 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 679 fbcon_set_tileops(vc, info); 680 else { 681 fbcon_set_rotation(info); 682 fbcon_set_bitops(ops); 683 } 684 } 685 686 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 687 { 688 int err = 0; 689 690 if (info->flags & FBINFO_MISC_TILEBLITTING && 691 info->tileops->fb_get_tilemax(info) < charcount) 692 err = 1; 693 694 return err; 695 } 696 #else 697 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 698 { 699 struct fbcon_ops *ops = info->fbcon_par; 700 701 info->flags &= ~FBINFO_MISC_TILEBLITTING; 702 ops->p = &fb_display[vc->vc_num]; 703 fbcon_set_rotation(info); 704 fbcon_set_bitops(ops); 705 } 706 707 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 708 { 709 return 0; 710 } 711 712 #endif /* CONFIG_MISC_TILEBLITTING */ 713 714 715 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 716 int unit, int oldidx) 717 { 718 struct fbcon_ops *ops = NULL; 719 int err = 0; 720 721 if (!try_module_get(info->fbops->owner)) 722 err = -ENODEV; 723 724 if (!err && info->fbops->fb_open && 725 info->fbops->fb_open(info, 0)) 726 err = -ENODEV; 727 728 if (!err) { 729 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 730 if (!ops) 731 err = -ENOMEM; 732 } 733 734 if (!err) { 735 ops->cur_blink_jiffies = HZ / 5; 736 ops->info = info; 737 info->fbcon_par = ops; 738 739 if (vc) 740 set_blitting_type(vc, info); 741 } 742 743 if (err) { 744 con2fb_map[unit] = oldidx; 745 module_put(info->fbops->owner); 746 } 747 748 return err; 749 } 750 751 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 752 struct fb_info *newinfo, int unit, 753 int oldidx, int found) 754 { 755 struct fbcon_ops *ops = oldinfo->fbcon_par; 756 int err = 0, ret; 757 758 if (oldinfo->fbops->fb_release && 759 oldinfo->fbops->fb_release(oldinfo, 0)) { 760 con2fb_map[unit] = oldidx; 761 if (!found && newinfo->fbops->fb_release) 762 newinfo->fbops->fb_release(newinfo, 0); 763 if (!found) 764 module_put(newinfo->fbops->owner); 765 err = -ENODEV; 766 } 767 768 if (!err) { 769 fbcon_del_cursor_timer(oldinfo); 770 kfree(ops->cursor_state.mask); 771 kfree(ops->cursor_data); 772 kfree(ops->cursor_src); 773 kfree(ops->fontbuffer); 774 kfree(oldinfo->fbcon_par); 775 oldinfo->fbcon_par = NULL; 776 module_put(oldinfo->fbops->owner); 777 /* 778 If oldinfo and newinfo are driving the same hardware, 779 the fb_release() method of oldinfo may attempt to 780 restore the hardware state. This will leave the 781 newinfo in an undefined state. Thus, a call to 782 fb_set_par() may be needed for the newinfo. 783 */ 784 if (newinfo && newinfo->fbops->fb_set_par) { 785 ret = newinfo->fbops->fb_set_par(newinfo); 786 787 if (ret) 788 printk(KERN_ERR "con2fb_release_oldinfo: " 789 "detected unhandled fb_set_par error, " 790 "error code %d\n", ret); 791 } 792 } 793 794 return err; 795 } 796 797 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 798 int unit, int show_logo) 799 { 800 struct fbcon_ops *ops = info->fbcon_par; 801 int ret; 802 803 ops->currcon = fg_console; 804 805 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 806 ret = info->fbops->fb_set_par(info); 807 808 if (ret) 809 printk(KERN_ERR "con2fb_init_display: detected " 810 "unhandled fb_set_par error, " 811 "error code %d\n", ret); 812 } 813 814 ops->flags |= FBCON_FLAGS_INIT; 815 ops->graphics = 0; 816 fbcon_set_disp(info, &info->var, unit); 817 818 if (show_logo) { 819 struct vc_data *fg_vc = vc_cons[fg_console].d; 820 struct fb_info *fg_info = 821 registered_fb[con2fb_map[fg_console]]; 822 823 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 824 fg_vc->vc_rows, fg_vc->vc_cols, 825 fg_vc->vc_rows); 826 } 827 828 update_screen(vc_cons[fg_console].d); 829 } 830 831 /** 832 * set_con2fb_map - map console to frame buffer device 833 * @unit: virtual console number to map 834 * @newidx: frame buffer index to map virtual console to 835 * @user: user request 836 * 837 * Maps a virtual console @unit to a frame buffer device 838 * @newidx. 839 * 840 * This should be called with the console lock held. 841 */ 842 static int set_con2fb_map(int unit, int newidx, int user) 843 { 844 struct vc_data *vc = vc_cons[unit].d; 845 int oldidx = con2fb_map[unit]; 846 struct fb_info *info = registered_fb[newidx]; 847 struct fb_info *oldinfo = NULL; 848 int found, err = 0; 849 850 WARN_CONSOLE_UNLOCKED(); 851 852 if (oldidx == newidx) 853 return 0; 854 855 if (!info) 856 return -EINVAL; 857 858 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 859 info_idx = newidx; 860 return do_fbcon_takeover(0); 861 } 862 863 if (oldidx != -1) 864 oldinfo = registered_fb[oldidx]; 865 866 found = search_fb_in_map(newidx); 867 868 con2fb_map[unit] = newidx; 869 if (!err && !found) 870 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 871 872 /* 873 * If old fb is not mapped to any of the consoles, 874 * fbcon should release it. 875 */ 876 if (!err && oldinfo && !search_fb_in_map(oldidx)) 877 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 878 found); 879 880 if (!err) { 881 int show_logo = (fg_console == 0 && !user && 882 logo_shown != FBCON_LOGO_DONTSHOW); 883 884 if (!found) 885 fbcon_add_cursor_timer(info); 886 con2fb_map_boot[unit] = newidx; 887 con2fb_init_display(vc, info, unit, show_logo); 888 } 889 890 if (!search_fb_in_map(info_idx)) 891 info_idx = newidx; 892 893 return err; 894 } 895 896 /* 897 * Low Level Operations 898 */ 899 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 900 static int var_to_display(struct fbcon_display *disp, 901 struct fb_var_screeninfo *var, 902 struct fb_info *info) 903 { 904 disp->xres_virtual = var->xres_virtual; 905 disp->yres_virtual = var->yres_virtual; 906 disp->bits_per_pixel = var->bits_per_pixel; 907 disp->grayscale = var->grayscale; 908 disp->nonstd = var->nonstd; 909 disp->accel_flags = var->accel_flags; 910 disp->height = var->height; 911 disp->width = var->width; 912 disp->red = var->red; 913 disp->green = var->green; 914 disp->blue = var->blue; 915 disp->transp = var->transp; 916 disp->rotate = var->rotate; 917 disp->mode = fb_match_mode(var, &info->modelist); 918 if (disp->mode == NULL) 919 /* This should not happen */ 920 return -EINVAL; 921 return 0; 922 } 923 924 static void display_to_var(struct fb_var_screeninfo *var, 925 struct fbcon_display *disp) 926 { 927 fb_videomode_to_var(var, disp->mode); 928 var->xres_virtual = disp->xres_virtual; 929 var->yres_virtual = disp->yres_virtual; 930 var->bits_per_pixel = disp->bits_per_pixel; 931 var->grayscale = disp->grayscale; 932 var->nonstd = disp->nonstd; 933 var->accel_flags = disp->accel_flags; 934 var->height = disp->height; 935 var->width = disp->width; 936 var->red = disp->red; 937 var->green = disp->green; 938 var->blue = disp->blue; 939 var->transp = disp->transp; 940 var->rotate = disp->rotate; 941 } 942 943 static const char *fbcon_startup(void) 944 { 945 const char *display_desc = "frame buffer device"; 946 struct fbcon_display *p = &fb_display[fg_console]; 947 struct vc_data *vc = vc_cons[fg_console].d; 948 const struct font_desc *font = NULL; 949 struct module *owner; 950 struct fb_info *info = NULL; 951 struct fbcon_ops *ops; 952 int rows, cols; 953 954 /* 955 * If num_registered_fb is zero, this is a call for the dummy part. 956 * The frame buffer devices weren't initialized yet. 957 */ 958 if (!num_registered_fb || info_idx == -1) 959 return display_desc; 960 /* 961 * Instead of blindly using registered_fb[0], we use info_idx, set by 962 * fb_console_init(); 963 */ 964 info = registered_fb[info_idx]; 965 if (!info) 966 return NULL; 967 968 owner = info->fbops->owner; 969 if (!try_module_get(owner)) 970 return NULL; 971 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 972 module_put(owner); 973 return NULL; 974 } 975 976 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 977 if (!ops) { 978 module_put(owner); 979 return NULL; 980 } 981 982 ops->currcon = -1; 983 ops->graphics = 1; 984 ops->cur_rotate = -1; 985 ops->cur_blink_jiffies = HZ / 5; 986 ops->info = info; 987 info->fbcon_par = ops; 988 989 p->con_rotate = initial_rotation; 990 if (p->con_rotate == -1) 991 p->con_rotate = info->fbcon_rotate_hint; 992 if (p->con_rotate == -1) 993 p->con_rotate = FB_ROTATE_UR; 994 995 set_blitting_type(vc, info); 996 997 /* Setup default font */ 998 if (!p->fontdata && !vc->vc_font.data) { 999 if (!fontname[0] || !(font = find_font(fontname))) 1000 font = get_default_font(info->var.xres, 1001 info->var.yres, 1002 info->pixmap.blit_x, 1003 info->pixmap.blit_y); 1004 vc->vc_font.width = font->width; 1005 vc->vc_font.height = font->height; 1006 vc->vc_font.data = (void *)(p->fontdata = font->data); 1007 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1008 } else { 1009 p->fontdata = vc->vc_font.data; 1010 } 1011 1012 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1013 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1014 cols /= vc->vc_font.width; 1015 rows /= vc->vc_font.height; 1016 vc_resize(vc, cols, rows); 1017 1018 DPRINTK("mode: %s\n", info->fix.id); 1019 DPRINTK("visual: %d\n", info->fix.visual); 1020 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1021 info->var.yres, 1022 info->var.bits_per_pixel); 1023 1024 fbcon_add_cursor_timer(info); 1025 return display_desc; 1026 } 1027 1028 static void fbcon_init(struct vc_data *vc, int init) 1029 { 1030 struct fb_info *info; 1031 struct fbcon_ops *ops; 1032 struct vc_data **default_mode = vc->vc_display_fg; 1033 struct vc_data *svc = *default_mode; 1034 struct fbcon_display *t, *p = &fb_display[vc->vc_num]; 1035 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1036 int cap, ret; 1037 1038 if (WARN_ON(info_idx == -1)) 1039 return; 1040 1041 if (con2fb_map[vc->vc_num] == -1) 1042 con2fb_map[vc->vc_num] = info_idx; 1043 1044 info = registered_fb[con2fb_map[vc->vc_num]]; 1045 cap = info->flags; 1046 1047 if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET) 1048 logo_shown = FBCON_LOGO_DONTSHOW; 1049 1050 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1051 (info->fix.type == FB_TYPE_TEXT)) 1052 logo = 0; 1053 1054 if (var_to_display(p, &info->var, info)) 1055 return; 1056 1057 if (!info->fbcon_par) 1058 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1059 1060 /* If we are not the first console on this 1061 fb, copy the font from that console */ 1062 t = &fb_display[fg_console]; 1063 if (!p->fontdata) { 1064 if (t->fontdata) { 1065 struct vc_data *fvc = vc_cons[fg_console].d; 1066 1067 vc->vc_font.data = (void *)(p->fontdata = 1068 fvc->vc_font.data); 1069 vc->vc_font.width = fvc->vc_font.width; 1070 vc->vc_font.height = fvc->vc_font.height; 1071 p->userfont = t->userfont; 1072 1073 if (p->userfont) 1074 REFCOUNT(p->fontdata)++; 1075 } else { 1076 const struct font_desc *font = NULL; 1077 1078 if (!fontname[0] || !(font = find_font(fontname))) 1079 font = get_default_font(info->var.xres, 1080 info->var.yres, 1081 info->pixmap.blit_x, 1082 info->pixmap.blit_y); 1083 vc->vc_font.width = font->width; 1084 vc->vc_font.height = font->height; 1085 vc->vc_font.data = (void *)(p->fontdata = font->data); 1086 vc->vc_font.charcount = 256; /* FIXME Need to 1087 support more fonts */ 1088 } 1089 } 1090 1091 if (p->userfont) 1092 charcnt = FNTCHARCNT(p->fontdata); 1093 1094 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1095 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1096 if (charcnt == 256) { 1097 vc->vc_hi_font_mask = 0; 1098 } else { 1099 vc->vc_hi_font_mask = 0x100; 1100 if (vc->vc_can_do_color) 1101 vc->vc_complement_mask <<= 1; 1102 } 1103 1104 if (!*svc->vc_uni_pagedir_loc) 1105 con_set_default_unimap(svc); 1106 if (!*vc->vc_uni_pagedir_loc) 1107 con_copy_unimap(vc, svc); 1108 1109 ops = info->fbcon_par; 1110 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1111 1112 p->con_rotate = initial_rotation; 1113 if (p->con_rotate == -1) 1114 p->con_rotate = info->fbcon_rotate_hint; 1115 if (p->con_rotate == -1) 1116 p->con_rotate = FB_ROTATE_UR; 1117 1118 set_blitting_type(vc, info); 1119 1120 cols = vc->vc_cols; 1121 rows = vc->vc_rows; 1122 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1123 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1124 new_cols /= vc->vc_font.width; 1125 new_rows /= vc->vc_font.height; 1126 1127 /* 1128 * We must always set the mode. The mode of the previous console 1129 * driver could be in the same resolution but we are using different 1130 * hardware so we have to initialize the hardware. 1131 * 1132 * We need to do it in fbcon_init() to prevent screen corruption. 1133 */ 1134 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1135 if (info->fbops->fb_set_par && 1136 !(ops->flags & FBCON_FLAGS_INIT)) { 1137 ret = info->fbops->fb_set_par(info); 1138 1139 if (ret) 1140 printk(KERN_ERR "fbcon_init: detected " 1141 "unhandled fb_set_par error, " 1142 "error code %d\n", ret); 1143 } 1144 1145 ops->flags |= FBCON_FLAGS_INIT; 1146 } 1147 1148 ops->graphics = 0; 1149 1150 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1151 !(cap & FBINFO_HWACCEL_DISABLED)) 1152 p->scrollmode = SCROLL_MOVE; 1153 else /* default to something safe */ 1154 p->scrollmode = SCROLL_REDRAW; 1155 1156 /* 1157 * ++guenther: console.c:vc_allocate() relies on initializing 1158 * vc_{cols,rows}, but we must not set those if we are only 1159 * resizing the console. 1160 */ 1161 if (init) { 1162 vc->vc_cols = new_cols; 1163 vc->vc_rows = new_rows; 1164 } else 1165 vc_resize(vc, new_cols, new_rows); 1166 1167 if (logo) 1168 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1169 1170 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1171 ops->rotate = FB_ROTATE_UR; 1172 set_blitting_type(vc, info); 1173 } 1174 1175 ops->p = &fb_display[fg_console]; 1176 } 1177 1178 static void fbcon_free_font(struct fbcon_display *p, bool freefont) 1179 { 1180 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1181 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1182 p->fontdata = NULL; 1183 p->userfont = 0; 1184 } 1185 1186 static void set_vc_hi_font(struct vc_data *vc, bool set); 1187 1188 static void fbcon_deinit(struct vc_data *vc) 1189 { 1190 struct fbcon_display *p = &fb_display[vc->vc_num]; 1191 struct fb_info *info; 1192 struct fbcon_ops *ops; 1193 int idx; 1194 bool free_font = true; 1195 1196 idx = con2fb_map[vc->vc_num]; 1197 1198 if (idx == -1) 1199 goto finished; 1200 1201 info = registered_fb[idx]; 1202 1203 if (!info) 1204 goto finished; 1205 1206 if (info->flags & FBINFO_MISC_FIRMWARE) 1207 free_font = false; 1208 ops = info->fbcon_par; 1209 1210 if (!ops) 1211 goto finished; 1212 1213 if (con_is_visible(vc)) 1214 fbcon_del_cursor_timer(info); 1215 1216 ops->flags &= ~FBCON_FLAGS_INIT; 1217 finished: 1218 1219 fbcon_free_font(p, free_font); 1220 if (free_font) 1221 vc->vc_font.data = NULL; 1222 1223 if (vc->vc_hi_font_mask && vc->vc_screenbuf) 1224 set_vc_hi_font(vc, false); 1225 1226 if (!con_is_bound(&fb_con)) 1227 fbcon_exit(); 1228 1229 if (vc->vc_num == logo_shown) 1230 logo_shown = FBCON_LOGO_CANSHOW; 1231 1232 return; 1233 } 1234 1235 /* ====================================================================== */ 1236 1237 /* fbcon_XXX routines - interface used by the world 1238 * 1239 * This system is now divided into two levels because of complications 1240 * caused by hardware scrolling. Top level functions: 1241 * 1242 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1243 * 1244 * handles y values in range [0, scr_height-1] that correspond to real 1245 * screen positions. y_wrap shift means that first line of bitmap may be 1246 * anywhere on this display. These functions convert lineoffsets to 1247 * bitmap offsets and deal with the wrap-around case by splitting blits. 1248 * 1249 * fbcon_bmove_physical_8() -- These functions fast implementations 1250 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1251 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1252 * 1253 * WARNING: 1254 * 1255 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1256 * Implies should only really hardware scroll in rows. Only reason for 1257 * restriction is simplicity & efficiency at the moment. 1258 */ 1259 1260 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1261 int width) 1262 { 1263 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1264 struct fbcon_ops *ops = info->fbcon_par; 1265 1266 struct fbcon_display *p = &fb_display[vc->vc_num]; 1267 u_int y_break; 1268 1269 if (fbcon_is_inactive(vc, info)) 1270 return; 1271 1272 if (!height || !width) 1273 return; 1274 1275 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1276 vc->vc_top = 0; 1277 /* 1278 * If the font dimensions are not an integral of the display 1279 * dimensions then the ops->clear below won't end up clearing 1280 * the margins. Call clear_margins here in case the logo 1281 * bitmap stretched into the margin area. 1282 */ 1283 fbcon_clear_margins(vc, 0); 1284 } 1285 1286 /* Split blits that cross physical y_wrap boundary */ 1287 1288 y_break = p->vrows - p->yscroll; 1289 if (sy < y_break && sy + height - 1 >= y_break) { 1290 u_int b = y_break - sy; 1291 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1292 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1293 width); 1294 } else 1295 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1296 } 1297 1298 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1299 int count, int ypos, int xpos) 1300 { 1301 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1302 struct fbcon_display *p = &fb_display[vc->vc_num]; 1303 struct fbcon_ops *ops = info->fbcon_par; 1304 1305 if (!fbcon_is_inactive(vc, info)) 1306 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1307 get_color(vc, info, scr_readw(s), 1), 1308 get_color(vc, info, scr_readw(s), 0)); 1309 } 1310 1311 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1312 { 1313 unsigned short chr; 1314 1315 scr_writew(c, &chr); 1316 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1317 } 1318 1319 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1320 { 1321 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1322 struct fbcon_ops *ops = info->fbcon_par; 1323 1324 if (!fbcon_is_inactive(vc, info)) 1325 ops->clear_margins(vc, info, margin_color, bottom_only); 1326 } 1327 1328 static void fbcon_cursor(struct vc_data *vc, int mode) 1329 { 1330 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1331 struct fbcon_ops *ops = info->fbcon_par; 1332 int c = scr_readw((u16 *) vc->vc_pos); 1333 1334 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1335 1336 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1337 return; 1338 1339 if (vc->vc_cursor_type & CUR_SW) 1340 fbcon_del_cursor_timer(info); 1341 else 1342 fbcon_add_cursor_timer(info); 1343 1344 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1345 1346 ops->cursor(vc, info, mode, get_color(vc, info, c, 1), 1347 get_color(vc, info, c, 0)); 1348 } 1349 1350 static int scrollback_phys_max = 0; 1351 static int scrollback_max = 0; 1352 static int scrollback_current = 0; 1353 1354 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1355 int unit) 1356 { 1357 struct fbcon_display *p, *t; 1358 struct vc_data **default_mode, *vc; 1359 struct vc_data *svc; 1360 struct fbcon_ops *ops = info->fbcon_par; 1361 int rows, cols, charcnt = 256; 1362 1363 p = &fb_display[unit]; 1364 1365 if (var_to_display(p, var, info)) 1366 return; 1367 1368 vc = vc_cons[unit].d; 1369 1370 if (!vc) 1371 return; 1372 1373 default_mode = vc->vc_display_fg; 1374 svc = *default_mode; 1375 t = &fb_display[svc->vc_num]; 1376 1377 if (!vc->vc_font.data) { 1378 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1379 vc->vc_font.width = (*default_mode)->vc_font.width; 1380 vc->vc_font.height = (*default_mode)->vc_font.height; 1381 p->userfont = t->userfont; 1382 if (p->userfont) 1383 REFCOUNT(p->fontdata)++; 1384 } 1385 if (p->userfont) 1386 charcnt = FNTCHARCNT(p->fontdata); 1387 1388 var->activate = FB_ACTIVATE_NOW; 1389 info->var.activate = var->activate; 1390 var->yoffset = info->var.yoffset; 1391 var->xoffset = info->var.xoffset; 1392 fb_set_var(info, var); 1393 ops->var = info->var; 1394 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1395 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1396 if (charcnt == 256) { 1397 vc->vc_hi_font_mask = 0; 1398 } else { 1399 vc->vc_hi_font_mask = 0x100; 1400 if (vc->vc_can_do_color) 1401 vc->vc_complement_mask <<= 1; 1402 } 1403 1404 if (!*svc->vc_uni_pagedir_loc) 1405 con_set_default_unimap(svc); 1406 if (!*vc->vc_uni_pagedir_loc) 1407 con_copy_unimap(vc, svc); 1408 1409 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1410 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1411 cols /= vc->vc_font.width; 1412 rows /= vc->vc_font.height; 1413 vc_resize(vc, cols, rows); 1414 1415 if (con_is_visible(vc)) { 1416 update_screen(vc); 1417 } 1418 } 1419 1420 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1421 { 1422 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1423 struct fbcon_ops *ops = info->fbcon_par; 1424 struct fbcon_display *p = &fb_display[vc->vc_num]; 1425 1426 p->yscroll += count; 1427 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1428 p->yscroll -= p->vrows; 1429 ops->var.xoffset = 0; 1430 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1431 ops->var.vmode |= FB_VMODE_YWRAP; 1432 ops->update_start(info); 1433 scrollback_max += count; 1434 if (scrollback_max > scrollback_phys_max) 1435 scrollback_max = scrollback_phys_max; 1436 scrollback_current = 0; 1437 } 1438 1439 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1440 { 1441 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1442 struct fbcon_ops *ops = info->fbcon_par; 1443 struct fbcon_display *p = &fb_display[vc->vc_num]; 1444 1445 p->yscroll -= count; 1446 if (p->yscroll < 0) /* Deal with wrap */ 1447 p->yscroll += p->vrows; 1448 ops->var.xoffset = 0; 1449 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1450 ops->var.vmode |= FB_VMODE_YWRAP; 1451 ops->update_start(info); 1452 scrollback_max -= count; 1453 if (scrollback_max < 0) 1454 scrollback_max = 0; 1455 scrollback_current = 0; 1456 } 1457 1458 static __inline__ void ypan_up(struct vc_data *vc, int count) 1459 { 1460 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1461 struct fbcon_display *p = &fb_display[vc->vc_num]; 1462 struct fbcon_ops *ops = info->fbcon_par; 1463 1464 p->yscroll += count; 1465 if (p->yscroll > p->vrows - vc->vc_rows) { 1466 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1467 0, 0, 0, vc->vc_rows, vc->vc_cols); 1468 p->yscroll -= p->vrows - vc->vc_rows; 1469 } 1470 1471 ops->var.xoffset = 0; 1472 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1473 ops->var.vmode &= ~FB_VMODE_YWRAP; 1474 ops->update_start(info); 1475 fbcon_clear_margins(vc, 1); 1476 scrollback_max += count; 1477 if (scrollback_max > scrollback_phys_max) 1478 scrollback_max = scrollback_phys_max; 1479 scrollback_current = 0; 1480 } 1481 1482 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1483 { 1484 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1485 struct fbcon_ops *ops = info->fbcon_par; 1486 struct fbcon_display *p = &fb_display[vc->vc_num]; 1487 1488 p->yscroll += count; 1489 1490 if (p->yscroll > p->vrows - vc->vc_rows) { 1491 p->yscroll -= p->vrows - vc->vc_rows; 1492 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1493 } 1494 1495 ops->var.xoffset = 0; 1496 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1497 ops->var.vmode &= ~FB_VMODE_YWRAP; 1498 ops->update_start(info); 1499 fbcon_clear_margins(vc, 1); 1500 scrollback_max += count; 1501 if (scrollback_max > scrollback_phys_max) 1502 scrollback_max = scrollback_phys_max; 1503 scrollback_current = 0; 1504 } 1505 1506 static __inline__ void ypan_down(struct vc_data *vc, int count) 1507 { 1508 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1509 struct fbcon_display *p = &fb_display[vc->vc_num]; 1510 struct fbcon_ops *ops = info->fbcon_par; 1511 1512 p->yscroll -= count; 1513 if (p->yscroll < 0) { 1514 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1515 0, vc->vc_rows, vc->vc_cols); 1516 p->yscroll += p->vrows - vc->vc_rows; 1517 } 1518 1519 ops->var.xoffset = 0; 1520 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1521 ops->var.vmode &= ~FB_VMODE_YWRAP; 1522 ops->update_start(info); 1523 fbcon_clear_margins(vc, 1); 1524 scrollback_max -= count; 1525 if (scrollback_max < 0) 1526 scrollback_max = 0; 1527 scrollback_current = 0; 1528 } 1529 1530 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1531 { 1532 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1533 struct fbcon_ops *ops = info->fbcon_par; 1534 struct fbcon_display *p = &fb_display[vc->vc_num]; 1535 1536 p->yscroll -= count; 1537 1538 if (p->yscroll < 0) { 1539 p->yscroll += p->vrows - vc->vc_rows; 1540 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1541 } 1542 1543 ops->var.xoffset = 0; 1544 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1545 ops->var.vmode &= ~FB_VMODE_YWRAP; 1546 ops->update_start(info); 1547 fbcon_clear_margins(vc, 1); 1548 scrollback_max -= count; 1549 if (scrollback_max < 0) 1550 scrollback_max = 0; 1551 scrollback_current = 0; 1552 } 1553 1554 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, 1555 int line, int count, int dy) 1556 { 1557 unsigned short *s = (unsigned short *) 1558 (vc->vc_origin + vc->vc_size_row * line); 1559 1560 while (count--) { 1561 unsigned short *start = s; 1562 unsigned short *le = advance_row(s, 1); 1563 unsigned short c; 1564 int x = 0; 1565 unsigned short attr = 1; 1566 1567 do { 1568 c = scr_readw(s); 1569 if (attr != (c & 0xff00)) { 1570 attr = c & 0xff00; 1571 if (s > start) { 1572 fbcon_putcs(vc, start, s - start, 1573 dy, x); 1574 x += s - start; 1575 start = s; 1576 } 1577 } 1578 console_conditional_schedule(); 1579 s++; 1580 } while (s < le); 1581 if (s > start) 1582 fbcon_putcs(vc, start, s - start, dy, x); 1583 console_conditional_schedule(); 1584 dy++; 1585 } 1586 } 1587 1588 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1589 struct fbcon_display *p, int line, int count, int ycount) 1590 { 1591 int offset = ycount * vc->vc_cols; 1592 unsigned short *d = (unsigned short *) 1593 (vc->vc_origin + vc->vc_size_row * line); 1594 unsigned short *s = d + offset; 1595 struct fbcon_ops *ops = info->fbcon_par; 1596 1597 while (count--) { 1598 unsigned short *start = s; 1599 unsigned short *le = advance_row(s, 1); 1600 unsigned short c; 1601 int x = 0; 1602 1603 do { 1604 c = scr_readw(s); 1605 1606 if (c == scr_readw(d)) { 1607 if (s > start) { 1608 ops->bmove(vc, info, line + ycount, x, 1609 line, x, 1, s-start); 1610 x += s - start + 1; 1611 start = s + 1; 1612 } else { 1613 x++; 1614 start++; 1615 } 1616 } 1617 1618 scr_writew(c, d); 1619 console_conditional_schedule(); 1620 s++; 1621 d++; 1622 } while (s < le); 1623 if (s > start) 1624 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1625 s-start); 1626 console_conditional_schedule(); 1627 if (ycount > 0) 1628 line++; 1629 else { 1630 line--; 1631 /* NOTE: We subtract two lines from these pointers */ 1632 s -= vc->vc_size_row; 1633 d -= vc->vc_size_row; 1634 } 1635 } 1636 } 1637 1638 static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p, 1639 int line, int count, int offset) 1640 { 1641 unsigned short *d = (unsigned short *) 1642 (vc->vc_origin + vc->vc_size_row * line); 1643 unsigned short *s = d + offset; 1644 1645 while (count--) { 1646 unsigned short *start = s; 1647 unsigned short *le = advance_row(s, 1); 1648 unsigned short c; 1649 int x = 0; 1650 unsigned short attr = 1; 1651 1652 do { 1653 c = scr_readw(s); 1654 if (attr != (c & 0xff00)) { 1655 attr = c & 0xff00; 1656 if (s > start) { 1657 fbcon_putcs(vc, start, s - start, 1658 line, x); 1659 x += s - start; 1660 start = s; 1661 } 1662 } 1663 if (c == scr_readw(d)) { 1664 if (s > start) { 1665 fbcon_putcs(vc, start, s - start, 1666 line, x); 1667 x += s - start + 1; 1668 start = s + 1; 1669 } else { 1670 x++; 1671 start++; 1672 } 1673 } 1674 scr_writew(c, d); 1675 console_conditional_schedule(); 1676 s++; 1677 d++; 1678 } while (s < le); 1679 if (s > start) 1680 fbcon_putcs(vc, start, s - start, line, x); 1681 console_conditional_schedule(); 1682 if (offset > 0) 1683 line++; 1684 else { 1685 line--; 1686 /* NOTE: We subtract two lines from these pointers */ 1687 s -= vc->vc_size_row; 1688 d -= vc->vc_size_row; 1689 } 1690 } 1691 } 1692 1693 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1694 enum con_scroll dir, unsigned int count) 1695 { 1696 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1697 struct fbcon_display *p = &fb_display[vc->vc_num]; 1698 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1699 1700 if (fbcon_is_inactive(vc, info)) 1701 return true; 1702 1703 fbcon_cursor(vc, CM_ERASE); 1704 1705 /* 1706 * ++Geert: Only use ywrap/ypan if the console is in text mode 1707 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1708 * whole screen (prevents flicker). 1709 */ 1710 1711 switch (dir) { 1712 case SM_UP: 1713 if (count > vc->vc_rows) /* Maximum realistic size */ 1714 count = vc->vc_rows; 1715 if (logo_shown >= 0) 1716 goto redraw_up; 1717 switch (p->scrollmode) { 1718 case SCROLL_MOVE: 1719 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1720 count); 1721 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1722 scr_memsetw((unsigned short *) (vc->vc_origin + 1723 vc->vc_size_row * 1724 (b - count)), 1725 vc->vc_video_erase_char, 1726 vc->vc_size_row * count); 1727 return true; 1728 break; 1729 1730 case SCROLL_WRAP_MOVE: 1731 if (b - t - count > 3 * vc->vc_rows >> 2) { 1732 if (t > 0) 1733 fbcon_bmove(vc, 0, 0, count, 0, t, 1734 vc->vc_cols); 1735 ywrap_up(vc, count); 1736 if (vc->vc_rows - b > 0) 1737 fbcon_bmove(vc, b - count, 0, b, 0, 1738 vc->vc_rows - b, 1739 vc->vc_cols); 1740 } else if (info->flags & FBINFO_READS_FAST) 1741 fbcon_bmove(vc, t + count, 0, t, 0, 1742 b - t - count, vc->vc_cols); 1743 else 1744 goto redraw_up; 1745 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1746 break; 1747 1748 case SCROLL_PAN_REDRAW: 1749 if ((p->yscroll + count <= 1750 2 * (p->vrows - vc->vc_rows)) 1751 && ((!scroll_partial && (b - t == vc->vc_rows)) 1752 || (scroll_partial 1753 && (b - t - count > 1754 3 * vc->vc_rows >> 2)))) { 1755 if (t > 0) 1756 fbcon_redraw_move(vc, p, 0, t, count); 1757 ypan_up_redraw(vc, t, count); 1758 if (vc->vc_rows - b > 0) 1759 fbcon_redraw_move(vc, p, b, 1760 vc->vc_rows - b, b); 1761 } else 1762 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1763 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1764 break; 1765 1766 case SCROLL_PAN_MOVE: 1767 if ((p->yscroll + count <= 1768 2 * (p->vrows - vc->vc_rows)) 1769 && ((!scroll_partial && (b - t == vc->vc_rows)) 1770 || (scroll_partial 1771 && (b - t - count > 1772 3 * vc->vc_rows >> 2)))) { 1773 if (t > 0) 1774 fbcon_bmove(vc, 0, 0, count, 0, t, 1775 vc->vc_cols); 1776 ypan_up(vc, count); 1777 if (vc->vc_rows - b > 0) 1778 fbcon_bmove(vc, b - count, 0, b, 0, 1779 vc->vc_rows - b, 1780 vc->vc_cols); 1781 } else if (info->flags & FBINFO_READS_FAST) 1782 fbcon_bmove(vc, t + count, 0, t, 0, 1783 b - t - count, vc->vc_cols); 1784 else 1785 goto redraw_up; 1786 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1787 break; 1788 1789 case SCROLL_REDRAW: 1790 redraw_up: 1791 fbcon_redraw(vc, p, t, b - t - count, 1792 count * vc->vc_cols); 1793 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1794 scr_memsetw((unsigned short *) (vc->vc_origin + 1795 vc->vc_size_row * 1796 (b - count)), 1797 vc->vc_video_erase_char, 1798 vc->vc_size_row * count); 1799 return true; 1800 } 1801 break; 1802 1803 case SM_DOWN: 1804 if (count > vc->vc_rows) /* Maximum realistic size */ 1805 count = vc->vc_rows; 1806 if (logo_shown >= 0) 1807 goto redraw_down; 1808 switch (p->scrollmode) { 1809 case SCROLL_MOVE: 1810 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1811 -count); 1812 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1813 scr_memsetw((unsigned short *) (vc->vc_origin + 1814 vc->vc_size_row * 1815 t), 1816 vc->vc_video_erase_char, 1817 vc->vc_size_row * count); 1818 return true; 1819 break; 1820 1821 case SCROLL_WRAP_MOVE: 1822 if (b - t - count > 3 * vc->vc_rows >> 2) { 1823 if (vc->vc_rows - b > 0) 1824 fbcon_bmove(vc, b, 0, b - count, 0, 1825 vc->vc_rows - b, 1826 vc->vc_cols); 1827 ywrap_down(vc, count); 1828 if (t > 0) 1829 fbcon_bmove(vc, count, 0, 0, 0, t, 1830 vc->vc_cols); 1831 } else if (info->flags & FBINFO_READS_FAST) 1832 fbcon_bmove(vc, t, 0, t + count, 0, 1833 b - t - count, vc->vc_cols); 1834 else 1835 goto redraw_down; 1836 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1837 break; 1838 1839 case SCROLL_PAN_MOVE: 1840 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1841 && ((!scroll_partial && (b - t == vc->vc_rows)) 1842 || (scroll_partial 1843 && (b - t - count > 1844 3 * vc->vc_rows >> 2)))) { 1845 if (vc->vc_rows - b > 0) 1846 fbcon_bmove(vc, b, 0, b - count, 0, 1847 vc->vc_rows - b, 1848 vc->vc_cols); 1849 ypan_down(vc, count); 1850 if (t > 0) 1851 fbcon_bmove(vc, count, 0, 0, 0, t, 1852 vc->vc_cols); 1853 } else if (info->flags & FBINFO_READS_FAST) 1854 fbcon_bmove(vc, t, 0, t + count, 0, 1855 b - t - count, vc->vc_cols); 1856 else 1857 goto redraw_down; 1858 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1859 break; 1860 1861 case SCROLL_PAN_REDRAW: 1862 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1863 && ((!scroll_partial && (b - t == vc->vc_rows)) 1864 || (scroll_partial 1865 && (b - t - count > 1866 3 * vc->vc_rows >> 2)))) { 1867 if (vc->vc_rows - b > 0) 1868 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 1869 b - count); 1870 ypan_down_redraw(vc, t, count); 1871 if (t > 0) 1872 fbcon_redraw_move(vc, p, count, t, 0); 1873 } else 1874 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 1875 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1876 break; 1877 1878 case SCROLL_REDRAW: 1879 redraw_down: 1880 fbcon_redraw(vc, p, b - 1, b - t - count, 1881 -count * vc->vc_cols); 1882 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1883 scr_memsetw((unsigned short *) (vc->vc_origin + 1884 vc->vc_size_row * 1885 t), 1886 vc->vc_video_erase_char, 1887 vc->vc_size_row * count); 1888 return true; 1889 } 1890 } 1891 return false; 1892 } 1893 1894 1895 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 1896 int height, int width) 1897 { 1898 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1899 struct fbcon_display *p = &fb_display[vc->vc_num]; 1900 1901 if (fbcon_is_inactive(vc, info)) 1902 return; 1903 1904 if (!width || !height) 1905 return; 1906 1907 /* Split blits that cross physical y_wrap case. 1908 * Pathological case involves 4 blits, better to use recursive 1909 * code rather than unrolled case 1910 * 1911 * Recursive invocations don't need to erase the cursor over and 1912 * over again, so we use fbcon_bmove_rec() 1913 */ 1914 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 1915 p->vrows - p->yscroll); 1916 } 1917 1918 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, 1919 int dy, int dx, int height, int width, u_int y_break) 1920 { 1921 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1922 struct fbcon_ops *ops = info->fbcon_par; 1923 u_int b; 1924 1925 if (sy < y_break && sy + height > y_break) { 1926 b = y_break - sy; 1927 if (dy < sy) { /* Avoid trashing self */ 1928 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 1929 y_break); 1930 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 1931 height - b, width, y_break); 1932 } else { 1933 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 1934 height - b, width, y_break); 1935 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 1936 y_break); 1937 } 1938 return; 1939 } 1940 1941 if (dy < y_break && dy + height > y_break) { 1942 b = y_break - dy; 1943 if (dy < sy) { /* Avoid trashing self */ 1944 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 1945 y_break); 1946 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 1947 height - b, width, y_break); 1948 } else { 1949 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 1950 height - b, width, y_break); 1951 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 1952 y_break); 1953 } 1954 return; 1955 } 1956 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 1957 height, width); 1958 } 1959 1960 static void updatescrollmode(struct fbcon_display *p, 1961 struct fb_info *info, 1962 struct vc_data *vc) 1963 { 1964 struct fbcon_ops *ops = info->fbcon_par; 1965 int fh = vc->vc_font.height; 1966 int cap = info->flags; 1967 u16 t = 0; 1968 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 1969 info->fix.xpanstep); 1970 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 1971 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1972 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 1973 info->var.xres_virtual); 1974 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 1975 divides(ypan, vc->vc_font.height) && vyres > yres; 1976 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 1977 divides(ywrap, vc->vc_font.height) && 1978 divides(vc->vc_font.height, vyres) && 1979 divides(vc->vc_font.height, yres); 1980 int reading_fast = cap & FBINFO_READS_FAST; 1981 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 1982 !(cap & FBINFO_HWACCEL_DISABLED); 1983 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 1984 !(cap & FBINFO_HWACCEL_DISABLED); 1985 1986 p->vrows = vyres/fh; 1987 if (yres > (fh * (vc->vc_rows + 1))) 1988 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 1989 if ((yres % fh) && (vyres % fh < yres % fh)) 1990 p->vrows--; 1991 1992 if (good_wrap || good_pan) { 1993 if (reading_fast || fast_copyarea) 1994 p->scrollmode = good_wrap ? 1995 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 1996 else 1997 p->scrollmode = good_wrap ? SCROLL_REDRAW : 1998 SCROLL_PAN_REDRAW; 1999 } else { 2000 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2001 p->scrollmode = SCROLL_MOVE; 2002 else 2003 p->scrollmode = SCROLL_REDRAW; 2004 } 2005 } 2006 2007 #define PITCH(w) (((w) + 7) >> 3) 2008 #define CALC_FONTSZ(h, p, c) ((h) * (p) * (c)) /* size = height * pitch * charcount */ 2009 2010 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2011 unsigned int height, unsigned int user) 2012 { 2013 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2014 struct fbcon_ops *ops = info->fbcon_par; 2015 struct fbcon_display *p = &fb_display[vc->vc_num]; 2016 struct fb_var_screeninfo var = info->var; 2017 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2018 2019 if (p->userfont && FNTSIZE(vc->vc_font.data)) { 2020 int size; 2021 int pitch = PITCH(vc->vc_font.width); 2022 2023 /* 2024 * If user font, ensure that a possible change to user font 2025 * height or width will not allow a font data out-of-bounds access. 2026 * NOTE: must use original charcount in calculation as font 2027 * charcount can change and cannot be used to determine the 2028 * font data allocated size. 2029 */ 2030 if (pitch <= 0) 2031 return -EINVAL; 2032 size = CALC_FONTSZ(vc->vc_font.height, pitch, FNTCHARCNT(vc->vc_font.data)); 2033 if (size > FNTSIZE(vc->vc_font.data)) 2034 return -EINVAL; 2035 } 2036 2037 virt_w = FBCON_SWAP(ops->rotate, width, height); 2038 virt_h = FBCON_SWAP(ops->rotate, height, width); 2039 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2040 vc->vc_font.height); 2041 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2042 vc->vc_font.width); 2043 var.xres = virt_w * virt_fw; 2044 var.yres = virt_h * virt_fh; 2045 x_diff = info->var.xres - var.xres; 2046 y_diff = info->var.yres - var.yres; 2047 if (x_diff < 0 || x_diff > virt_fw || 2048 y_diff < 0 || y_diff > virt_fh) { 2049 const struct fb_videomode *mode; 2050 2051 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2052 mode = fb_find_best_mode(&var, &info->modelist); 2053 if (mode == NULL) 2054 return -EINVAL; 2055 display_to_var(&var, p); 2056 fb_videomode_to_var(&var, mode); 2057 2058 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2059 return -EINVAL; 2060 2061 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2062 if (con_is_visible(vc)) { 2063 var.activate = FB_ACTIVATE_NOW | 2064 FB_ACTIVATE_FORCE; 2065 fb_set_var(info, &var); 2066 } 2067 var_to_display(p, &info->var, info); 2068 ops->var = info->var; 2069 } 2070 updatescrollmode(p, info, vc); 2071 return 0; 2072 } 2073 2074 static int fbcon_switch(struct vc_data *vc) 2075 { 2076 struct fb_info *info, *old_info = NULL; 2077 struct fbcon_ops *ops; 2078 struct fbcon_display *p = &fb_display[vc->vc_num]; 2079 struct fb_var_screeninfo var; 2080 int i, ret, prev_console, charcnt = 256; 2081 2082 info = registered_fb[con2fb_map[vc->vc_num]]; 2083 ops = info->fbcon_par; 2084 2085 if (logo_shown >= 0) { 2086 struct vc_data *conp2 = vc_cons[logo_shown].d; 2087 2088 if (conp2->vc_top == logo_lines 2089 && conp2->vc_bottom == conp2->vc_rows) 2090 conp2->vc_top = 0; 2091 logo_shown = FBCON_LOGO_CANSHOW; 2092 } 2093 2094 prev_console = ops->currcon; 2095 if (prev_console != -1) 2096 old_info = registered_fb[con2fb_map[prev_console]]; 2097 /* 2098 * FIXME: If we have multiple fbdev's loaded, we need to 2099 * update all info->currcon. Perhaps, we can place this 2100 * in a centralized structure, but this might break some 2101 * drivers. 2102 * 2103 * info->currcon = vc->vc_num; 2104 */ 2105 for_each_registered_fb(i) { 2106 if (registered_fb[i]->fbcon_par) { 2107 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2108 2109 o->currcon = vc->vc_num; 2110 } 2111 } 2112 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2113 display_to_var(&var, p); 2114 var.activate = FB_ACTIVATE_NOW; 2115 2116 /* 2117 * make sure we don't unnecessarily trip the memcmp() 2118 * in fb_set_var() 2119 */ 2120 info->var.activate = var.activate; 2121 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2122 fb_set_var(info, &var); 2123 ops->var = info->var; 2124 2125 if (old_info != NULL && (old_info != info || 2126 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2127 if (info->fbops->fb_set_par) { 2128 ret = info->fbops->fb_set_par(info); 2129 2130 if (ret) 2131 printk(KERN_ERR "fbcon_switch: detected " 2132 "unhandled fb_set_par error, " 2133 "error code %d\n", ret); 2134 } 2135 2136 if (old_info != info) 2137 fbcon_del_cursor_timer(old_info); 2138 } 2139 2140 if (fbcon_is_inactive(vc, info) || 2141 ops->blank_state != FB_BLANK_UNBLANK) 2142 fbcon_del_cursor_timer(info); 2143 else 2144 fbcon_add_cursor_timer(info); 2145 2146 set_blitting_type(vc, info); 2147 ops->cursor_reset = 1; 2148 2149 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2150 ops->rotate = FB_ROTATE_UR; 2151 set_blitting_type(vc, info); 2152 } 2153 2154 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2155 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2156 2157 if (p->userfont) 2158 charcnt = FNTCHARCNT(vc->vc_font.data); 2159 2160 if (charcnt > 256) 2161 vc->vc_complement_mask <<= 1; 2162 2163 updatescrollmode(p, info, vc); 2164 2165 switch (p->scrollmode) { 2166 case SCROLL_WRAP_MOVE: 2167 scrollback_phys_max = p->vrows - vc->vc_rows; 2168 break; 2169 case SCROLL_PAN_MOVE: 2170 case SCROLL_PAN_REDRAW: 2171 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2172 if (scrollback_phys_max < 0) 2173 scrollback_phys_max = 0; 2174 break; 2175 default: 2176 scrollback_phys_max = 0; 2177 break; 2178 } 2179 2180 scrollback_max = 0; 2181 scrollback_current = 0; 2182 2183 if (!fbcon_is_inactive(vc, info)) { 2184 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2185 ops->update_start(info); 2186 } 2187 2188 fbcon_set_palette(vc, color_table); 2189 fbcon_clear_margins(vc, 0); 2190 2191 if (logo_shown == FBCON_LOGO_DRAW) { 2192 2193 logo_shown = fg_console; 2194 /* This is protected above by initmem_freed */ 2195 fb_show_logo(info, ops->rotate); 2196 update_region(vc, 2197 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2198 vc->vc_size_row * (vc->vc_bottom - 2199 vc->vc_top) / 2); 2200 return 0; 2201 } 2202 return 1; 2203 } 2204 2205 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2206 int blank) 2207 { 2208 if (blank) { 2209 unsigned short charmask = vc->vc_hi_font_mask ? 2210 0x1ff : 0xff; 2211 unsigned short oldc; 2212 2213 oldc = vc->vc_video_erase_char; 2214 vc->vc_video_erase_char &= charmask; 2215 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2216 vc->vc_video_erase_char = oldc; 2217 } 2218 } 2219 2220 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2221 { 2222 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2223 struct fbcon_ops *ops = info->fbcon_par; 2224 2225 if (mode_switch) { 2226 struct fb_var_screeninfo var = info->var; 2227 2228 ops->graphics = 1; 2229 2230 if (!blank) { 2231 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE | 2232 FB_ACTIVATE_KD_TEXT; 2233 fb_set_var(info, &var); 2234 ops->graphics = 0; 2235 ops->var = info->var; 2236 } 2237 } 2238 2239 if (!fbcon_is_inactive(vc, info)) { 2240 if (ops->blank_state != blank) { 2241 ops->blank_state = blank; 2242 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2243 ops->cursor_flash = (!blank); 2244 2245 if (fb_blank(info, blank)) 2246 fbcon_generic_blank(vc, info, blank); 2247 } 2248 2249 if (!blank) 2250 update_screen(vc); 2251 } 2252 2253 if (mode_switch || fbcon_is_inactive(vc, info) || 2254 ops->blank_state != FB_BLANK_UNBLANK) 2255 fbcon_del_cursor_timer(info); 2256 else 2257 fbcon_add_cursor_timer(info); 2258 2259 return 0; 2260 } 2261 2262 static int fbcon_debug_enter(struct vc_data *vc) 2263 { 2264 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2265 struct fbcon_ops *ops = info->fbcon_par; 2266 2267 ops->save_graphics = ops->graphics; 2268 ops->graphics = 0; 2269 if (info->fbops->fb_debug_enter) 2270 info->fbops->fb_debug_enter(info); 2271 fbcon_set_palette(vc, color_table); 2272 return 0; 2273 } 2274 2275 static int fbcon_debug_leave(struct vc_data *vc) 2276 { 2277 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2278 struct fbcon_ops *ops = info->fbcon_par; 2279 2280 ops->graphics = ops->save_graphics; 2281 if (info->fbops->fb_debug_leave) 2282 info->fbops->fb_debug_leave(info); 2283 return 0; 2284 } 2285 2286 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2287 { 2288 u8 *fontdata = vc->vc_font.data; 2289 u8 *data = font->data; 2290 int i, j; 2291 2292 font->width = vc->vc_font.width; 2293 font->height = vc->vc_font.height; 2294 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2295 if (!font->data) 2296 return 0; 2297 2298 if (font->width <= 8) { 2299 j = vc->vc_font.height; 2300 if (font->charcount * j > FNTSIZE(fontdata)) 2301 return -EINVAL; 2302 2303 for (i = 0; i < font->charcount; i++) { 2304 memcpy(data, fontdata, j); 2305 memset(data + j, 0, 32 - j); 2306 data += 32; 2307 fontdata += j; 2308 } 2309 } else if (font->width <= 16) { 2310 j = vc->vc_font.height * 2; 2311 if (font->charcount * j > FNTSIZE(fontdata)) 2312 return -EINVAL; 2313 2314 for (i = 0; i < font->charcount; i++) { 2315 memcpy(data, fontdata, j); 2316 memset(data + j, 0, 64 - j); 2317 data += 64; 2318 fontdata += j; 2319 } 2320 } else if (font->width <= 24) { 2321 if (font->charcount * (vc->vc_font.height * sizeof(u32)) > FNTSIZE(fontdata)) 2322 return -EINVAL; 2323 2324 for (i = 0; i < font->charcount; i++) { 2325 for (j = 0; j < vc->vc_font.height; j++) { 2326 *data++ = fontdata[0]; 2327 *data++ = fontdata[1]; 2328 *data++ = fontdata[2]; 2329 fontdata += sizeof(u32); 2330 } 2331 memset(data, 0, 3 * (32 - j)); 2332 data += 3 * (32 - j); 2333 } 2334 } else { 2335 j = vc->vc_font.height * 4; 2336 if (font->charcount * j > FNTSIZE(fontdata)) 2337 return -EINVAL; 2338 2339 for (i = 0; i < font->charcount; i++) { 2340 memcpy(data, fontdata, j); 2341 memset(data + j, 0, 128 - j); 2342 data += 128; 2343 fontdata += j; 2344 } 2345 } 2346 return 0; 2347 } 2348 2349 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2350 static void set_vc_hi_font(struct vc_data *vc, bool set) 2351 { 2352 if (!set) { 2353 vc->vc_hi_font_mask = 0; 2354 if (vc->vc_can_do_color) { 2355 vc->vc_complement_mask >>= 1; 2356 vc->vc_s_complement_mask >>= 1; 2357 } 2358 2359 /* ++Edmund: reorder the attribute bits */ 2360 if (vc->vc_can_do_color) { 2361 unsigned short *cp = 2362 (unsigned short *) vc->vc_origin; 2363 int count = vc->vc_screenbuf_size / 2; 2364 unsigned short c; 2365 for (; count > 0; count--, cp++) { 2366 c = scr_readw(cp); 2367 scr_writew(((c & 0xfe00) >> 1) | 2368 (c & 0xff), cp); 2369 } 2370 c = vc->vc_video_erase_char; 2371 vc->vc_video_erase_char = 2372 ((c & 0xfe00) >> 1) | (c & 0xff); 2373 vc->vc_attr >>= 1; 2374 } 2375 } else { 2376 vc->vc_hi_font_mask = 0x100; 2377 if (vc->vc_can_do_color) { 2378 vc->vc_complement_mask <<= 1; 2379 vc->vc_s_complement_mask <<= 1; 2380 } 2381 2382 /* ++Edmund: reorder the attribute bits */ 2383 { 2384 unsigned short *cp = 2385 (unsigned short *) vc->vc_origin; 2386 int count = vc->vc_screenbuf_size / 2; 2387 unsigned short c; 2388 for (; count > 0; count--, cp++) { 2389 unsigned short newc; 2390 c = scr_readw(cp); 2391 if (vc->vc_can_do_color) 2392 newc = 2393 ((c & 0xff00) << 1) | (c & 2394 0xff); 2395 else 2396 newc = c & ~0x100; 2397 scr_writew(newc, cp); 2398 } 2399 c = vc->vc_video_erase_char; 2400 if (vc->vc_can_do_color) { 2401 vc->vc_video_erase_char = 2402 ((c & 0xff00) << 1) | (c & 0xff); 2403 vc->vc_attr <<= 1; 2404 } else 2405 vc->vc_video_erase_char = c & ~0x100; 2406 } 2407 } 2408 } 2409 2410 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2411 const u8 * data, int userfont) 2412 { 2413 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2414 struct fbcon_ops *ops = info->fbcon_par; 2415 struct fbcon_display *p = &fb_display[vc->vc_num]; 2416 int resize; 2417 int cnt; 2418 char *old_data = NULL; 2419 2420 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2421 if (p->userfont) 2422 old_data = vc->vc_font.data; 2423 if (userfont) 2424 cnt = FNTCHARCNT(data); 2425 else 2426 cnt = 256; 2427 vc->vc_font.data = (void *)(p->fontdata = data); 2428 if ((p->userfont = userfont)) 2429 REFCOUNT(data)++; 2430 vc->vc_font.width = w; 2431 vc->vc_font.height = h; 2432 if (vc->vc_hi_font_mask && cnt == 256) 2433 set_vc_hi_font(vc, false); 2434 else if (!vc->vc_hi_font_mask && cnt == 512) 2435 set_vc_hi_font(vc, true); 2436 2437 if (resize) { 2438 int cols, rows; 2439 2440 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2441 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2442 cols /= w; 2443 rows /= h; 2444 vc_resize(vc, cols, rows); 2445 } else if (con_is_visible(vc) 2446 && vc->vc_mode == KD_TEXT) { 2447 fbcon_clear_margins(vc, 0); 2448 update_screen(vc); 2449 } 2450 2451 if (old_data && (--REFCOUNT(old_data) == 0)) 2452 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2453 return 0; 2454 } 2455 2456 static int fbcon_copy_font(struct vc_data *vc, int con) 2457 { 2458 struct fbcon_display *od = &fb_display[con]; 2459 struct console_font *f = &vc->vc_font; 2460 2461 if (od->fontdata == f->data) 2462 return 0; /* already the same font... */ 2463 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2464 } 2465 2466 /* 2467 * User asked to set font; we are guaranteed that 2468 * a) width and height are in range 1..32 2469 * b) charcount does not exceed 512 2470 * but lets not assume that, since someone might someday want to use larger 2471 * fonts. And charcount of 512 is small for unicode support. 2472 * 2473 * However, user space gives the font in 32 rows , regardless of 2474 * actual font height. So a new API is needed if support for larger fonts 2475 * is ever implemented. 2476 */ 2477 2478 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, 2479 unsigned int flags) 2480 { 2481 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2482 unsigned charcount = font->charcount; 2483 int w = font->width; 2484 int h = font->height; 2485 int size; 2486 int i, csum; 2487 u8 *new_data, *data = font->data; 2488 int pitch = PITCH(font->width); 2489 2490 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2491 * If not this check should be changed to charcount < 256 */ 2492 if (charcount != 256 && charcount != 512) 2493 return -EINVAL; 2494 2495 /* Make sure drawing engine can handle the font */ 2496 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2497 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2498 return -EINVAL; 2499 2500 /* Make sure driver can handle the font length */ 2501 if (fbcon_invalid_charcount(info, charcount)) 2502 return -EINVAL; 2503 2504 size = CALC_FONTSZ(h, pitch, charcount); 2505 2506 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2507 2508 if (!new_data) 2509 return -ENOMEM; 2510 2511 new_data += FONT_EXTRA_WORDS * sizeof(int); 2512 FNTSIZE(new_data) = size; 2513 FNTCHARCNT(new_data) = charcount; 2514 REFCOUNT(new_data) = 0; /* usage counter */ 2515 for (i=0; i< charcount; i++) { 2516 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2517 } 2518 2519 /* Since linux has a nice crc32 function use it for counting font 2520 * checksums. */ 2521 csum = crc32(0, new_data, size); 2522 2523 FNTSUM(new_data) = csum; 2524 /* Check if the same font is on some other console already */ 2525 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2526 struct vc_data *tmp = vc_cons[i].d; 2527 2528 if (fb_display[i].userfont && 2529 fb_display[i].fontdata && 2530 FNTSUM(fb_display[i].fontdata) == csum && 2531 FNTSIZE(fb_display[i].fontdata) == size && 2532 tmp->vc_font.width == w && 2533 !memcmp(fb_display[i].fontdata, new_data, size)) { 2534 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2535 new_data = (u8 *)fb_display[i].fontdata; 2536 break; 2537 } 2538 } 2539 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2540 } 2541 2542 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2543 { 2544 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2545 const struct font_desc *f; 2546 2547 if (!name) 2548 f = get_default_font(info->var.xres, info->var.yres, 2549 info->pixmap.blit_x, info->pixmap.blit_y); 2550 else if (!(f = find_font(name))) 2551 return -ENOENT; 2552 2553 font->width = f->width; 2554 font->height = f->height; 2555 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2556 } 2557 2558 static u16 palette_red[16]; 2559 static u16 palette_green[16]; 2560 static u16 palette_blue[16]; 2561 2562 static struct fb_cmap palette_cmap = { 2563 0, 16, palette_red, palette_green, palette_blue, NULL 2564 }; 2565 2566 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2567 { 2568 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2569 int i, j, k, depth; 2570 u8 val; 2571 2572 if (fbcon_is_inactive(vc, info)) 2573 return; 2574 2575 if (!con_is_visible(vc)) 2576 return; 2577 2578 depth = fb_get_color_depth(&info->var, &info->fix); 2579 if (depth > 3) { 2580 for (i = j = 0; i < 16; i++) { 2581 k = table[i]; 2582 val = vc->vc_palette[j++]; 2583 palette_red[k] = (val << 8) | val; 2584 val = vc->vc_palette[j++]; 2585 palette_green[k] = (val << 8) | val; 2586 val = vc->vc_palette[j++]; 2587 palette_blue[k] = (val << 8) | val; 2588 } 2589 palette_cmap.len = 16; 2590 palette_cmap.start = 0; 2591 /* 2592 * If framebuffer is capable of less than 16 colors, 2593 * use default palette of fbcon. 2594 */ 2595 } else 2596 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2597 2598 fb_set_cmap(&palette_cmap, info); 2599 } 2600 2601 static u16 *fbcon_screen_pos(const struct vc_data *vc, int offset) 2602 { 2603 return (u16 *) (vc->vc_origin + offset); 2604 } 2605 2606 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2607 int *px, int *py) 2608 { 2609 unsigned long ret; 2610 int x, y; 2611 2612 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2613 unsigned long offset = (pos - vc->vc_origin) / 2; 2614 2615 x = offset % vc->vc_cols; 2616 y = offset / vc->vc_cols; 2617 ret = pos + (vc->vc_cols - x) * 2; 2618 } else { 2619 /* Should not happen */ 2620 x = y = 0; 2621 ret = vc->vc_origin; 2622 } 2623 if (px) 2624 *px = x; 2625 if (py) 2626 *py = y; 2627 return ret; 2628 } 2629 2630 /* As we might be inside of softback, we may work with non-contiguous buffer, 2631 that's why we have to use a separate routine. */ 2632 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2633 { 2634 while (cnt--) { 2635 u16 a = scr_readw(p); 2636 if (!vc->vc_can_do_color) 2637 a ^= 0x0800; 2638 else if (vc->vc_hi_font_mask == 0x100) 2639 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2640 (((a) & 0x0e00) << 4); 2641 else 2642 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2643 (((a) & 0x0700) << 4); 2644 scr_writew(a, p++); 2645 } 2646 } 2647 2648 void fbcon_suspended(struct fb_info *info) 2649 { 2650 struct vc_data *vc = NULL; 2651 struct fbcon_ops *ops = info->fbcon_par; 2652 2653 if (!ops || ops->currcon < 0) 2654 return; 2655 vc = vc_cons[ops->currcon].d; 2656 2657 /* Clear cursor, restore saved data */ 2658 fbcon_cursor(vc, CM_ERASE); 2659 } 2660 2661 void fbcon_resumed(struct fb_info *info) 2662 { 2663 struct vc_data *vc; 2664 struct fbcon_ops *ops = info->fbcon_par; 2665 2666 if (!ops || ops->currcon < 0) 2667 return; 2668 vc = vc_cons[ops->currcon].d; 2669 2670 update_screen(vc); 2671 } 2672 2673 static void fbcon_modechanged(struct fb_info *info) 2674 { 2675 struct fbcon_ops *ops = info->fbcon_par; 2676 struct vc_data *vc; 2677 struct fbcon_display *p; 2678 int rows, cols; 2679 2680 if (!ops || ops->currcon < 0) 2681 return; 2682 vc = vc_cons[ops->currcon].d; 2683 if (vc->vc_mode != KD_TEXT || 2684 registered_fb[con2fb_map[ops->currcon]] != info) 2685 return; 2686 2687 p = &fb_display[vc->vc_num]; 2688 set_blitting_type(vc, info); 2689 2690 if (con_is_visible(vc)) { 2691 var_to_display(p, &info->var, info); 2692 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2693 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2694 cols /= vc->vc_font.width; 2695 rows /= vc->vc_font.height; 2696 vc_resize(vc, cols, rows); 2697 updatescrollmode(p, info, vc); 2698 scrollback_max = 0; 2699 scrollback_current = 0; 2700 2701 if (!fbcon_is_inactive(vc, info)) { 2702 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2703 ops->update_start(info); 2704 } 2705 2706 fbcon_set_palette(vc, color_table); 2707 update_screen(vc); 2708 } 2709 } 2710 2711 static void fbcon_set_all_vcs(struct fb_info *info) 2712 { 2713 struct fbcon_ops *ops = info->fbcon_par; 2714 struct vc_data *vc; 2715 struct fbcon_display *p; 2716 int i, rows, cols, fg = -1; 2717 2718 if (!ops || ops->currcon < 0) 2719 return; 2720 2721 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2722 vc = vc_cons[i].d; 2723 if (!vc || vc->vc_mode != KD_TEXT || 2724 registered_fb[con2fb_map[i]] != info) 2725 continue; 2726 2727 if (con_is_visible(vc)) { 2728 fg = i; 2729 continue; 2730 } 2731 2732 p = &fb_display[vc->vc_num]; 2733 set_blitting_type(vc, info); 2734 var_to_display(p, &info->var, info); 2735 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2736 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2737 cols /= vc->vc_font.width; 2738 rows /= vc->vc_font.height; 2739 vc_resize(vc, cols, rows); 2740 } 2741 2742 if (fg != -1) 2743 fbcon_modechanged(info); 2744 } 2745 2746 2747 void fbcon_update_vcs(struct fb_info *info, bool all) 2748 { 2749 if (all) 2750 fbcon_set_all_vcs(info); 2751 else 2752 fbcon_modechanged(info); 2753 } 2754 EXPORT_SYMBOL(fbcon_update_vcs); 2755 2756 int fbcon_mode_deleted(struct fb_info *info, 2757 struct fb_videomode *mode) 2758 { 2759 struct fb_info *fb_info; 2760 struct fbcon_display *p; 2761 int i, j, found = 0; 2762 2763 /* before deletion, ensure that mode is not in use */ 2764 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2765 j = con2fb_map[i]; 2766 if (j == -1) 2767 continue; 2768 fb_info = registered_fb[j]; 2769 if (fb_info != info) 2770 continue; 2771 p = &fb_display[i]; 2772 if (!p || !p->mode) 2773 continue; 2774 if (fb_mode_is_equal(p->mode, mode)) { 2775 found = 1; 2776 break; 2777 } 2778 } 2779 return found; 2780 } 2781 2782 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 2783 static void fbcon_unbind(void) 2784 { 2785 int ret; 2786 2787 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 2788 fbcon_is_default); 2789 2790 if (!ret) 2791 fbcon_has_console_bind = 0; 2792 } 2793 #else 2794 static inline void fbcon_unbind(void) {} 2795 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 2796 2797 /* called with console_lock held */ 2798 void fbcon_fb_unbind(struct fb_info *info) 2799 { 2800 int i, new_idx = -1, ret = 0; 2801 int idx = info->node; 2802 2803 WARN_CONSOLE_UNLOCKED(); 2804 2805 if (!fbcon_has_console_bind) 2806 return; 2807 2808 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2809 if (con2fb_map[i] != idx && 2810 con2fb_map[i] != -1) { 2811 new_idx = con2fb_map[i]; 2812 break; 2813 } 2814 } 2815 2816 if (new_idx != -1) { 2817 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2818 if (con2fb_map[i] == idx) 2819 set_con2fb_map(i, new_idx, 0); 2820 } 2821 } else { 2822 struct fb_info *info = registered_fb[idx]; 2823 2824 /* This is sort of like set_con2fb_map, except it maps 2825 * the consoles to no device and then releases the 2826 * oldinfo to free memory and cancel the cursor blink 2827 * timer. I can imagine this just becoming part of 2828 * set_con2fb_map where new_idx is -1 2829 */ 2830 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2831 if (con2fb_map[i] == idx) { 2832 con2fb_map[i] = -1; 2833 if (!search_fb_in_map(idx)) { 2834 ret = con2fb_release_oldinfo(vc_cons[i].d, 2835 info, NULL, i, 2836 idx, 0); 2837 if (ret) { 2838 con2fb_map[i] = idx; 2839 return; 2840 } 2841 } 2842 } 2843 } 2844 fbcon_unbind(); 2845 } 2846 } 2847 2848 /* called with console_lock held */ 2849 void fbcon_fb_unregistered(struct fb_info *info) 2850 { 2851 int i, idx; 2852 2853 WARN_CONSOLE_UNLOCKED(); 2854 2855 if (deferred_takeover) 2856 return; 2857 2858 idx = info->node; 2859 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2860 if (con2fb_map[i] == idx) 2861 con2fb_map[i] = -1; 2862 } 2863 2864 if (idx == info_idx) { 2865 info_idx = -1; 2866 2867 for_each_registered_fb(i) { 2868 info_idx = i; 2869 break; 2870 } 2871 } 2872 2873 if (info_idx != -1) { 2874 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2875 if (con2fb_map[i] == -1) 2876 con2fb_map[i] = info_idx; 2877 } 2878 } 2879 2880 if (primary_device == idx) 2881 primary_device = -1; 2882 2883 if (!num_registered_fb) 2884 do_unregister_con_driver(&fb_con); 2885 } 2886 2887 void fbcon_remap_all(struct fb_info *info) 2888 { 2889 int i, idx = info->node; 2890 2891 console_lock(); 2892 if (deferred_takeover) { 2893 for (i = first_fb_vc; i <= last_fb_vc; i++) 2894 con2fb_map_boot[i] = idx; 2895 fbcon_map_override(); 2896 console_unlock(); 2897 return; 2898 } 2899 2900 for (i = first_fb_vc; i <= last_fb_vc; i++) 2901 set_con2fb_map(i, idx, 0); 2902 2903 if (con_is_bound(&fb_con)) { 2904 printk(KERN_INFO "fbcon: Remapping primary device, " 2905 "fb%i, to tty %i-%i\n", idx, 2906 first_fb_vc + 1, last_fb_vc + 1); 2907 info_idx = idx; 2908 } 2909 console_unlock(); 2910 } 2911 2912 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 2913 static void fbcon_select_primary(struct fb_info *info) 2914 { 2915 if (!map_override && primary_device == -1 && 2916 fb_is_primary_device(info)) { 2917 int i; 2918 2919 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 2920 info->fix.id, info->node); 2921 primary_device = info->node; 2922 2923 for (i = first_fb_vc; i <= last_fb_vc; i++) 2924 con2fb_map_boot[i] = primary_device; 2925 2926 if (con_is_bound(&fb_con)) { 2927 printk(KERN_INFO "fbcon: Remapping primary device, " 2928 "fb%i, to tty %i-%i\n", info->node, 2929 first_fb_vc + 1, last_fb_vc + 1); 2930 info_idx = primary_device; 2931 } 2932 } 2933 2934 } 2935 #else 2936 static inline void fbcon_select_primary(struct fb_info *info) 2937 { 2938 return; 2939 } 2940 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 2941 2942 /* called with console_lock held */ 2943 int fbcon_fb_registered(struct fb_info *info) 2944 { 2945 int ret = 0, i, idx; 2946 2947 WARN_CONSOLE_UNLOCKED(); 2948 2949 idx = info->node; 2950 fbcon_select_primary(info); 2951 2952 if (deferred_takeover) { 2953 pr_info("fbcon: Deferring console take-over\n"); 2954 return 0; 2955 } 2956 2957 if (info_idx == -1) { 2958 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2959 if (con2fb_map_boot[i] == idx) { 2960 info_idx = idx; 2961 break; 2962 } 2963 } 2964 2965 if (info_idx != -1) 2966 ret = do_fbcon_takeover(1); 2967 } else { 2968 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2969 if (con2fb_map_boot[i] == idx) 2970 set_con2fb_map(i, idx, 0); 2971 } 2972 } 2973 2974 return ret; 2975 } 2976 2977 void fbcon_fb_blanked(struct fb_info *info, int blank) 2978 { 2979 struct fbcon_ops *ops = info->fbcon_par; 2980 struct vc_data *vc; 2981 2982 if (!ops || ops->currcon < 0) 2983 return; 2984 2985 vc = vc_cons[ops->currcon].d; 2986 if (vc->vc_mode != KD_TEXT || 2987 registered_fb[con2fb_map[ops->currcon]] != info) 2988 return; 2989 2990 if (con_is_visible(vc)) { 2991 if (blank) 2992 do_blank_screen(0); 2993 else 2994 do_unblank_screen(0); 2995 } 2996 ops->blank_state = blank; 2997 } 2998 2999 void fbcon_new_modelist(struct fb_info *info) 3000 { 3001 int i; 3002 struct vc_data *vc; 3003 struct fb_var_screeninfo var; 3004 const struct fb_videomode *mode; 3005 3006 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3007 if (registered_fb[con2fb_map[i]] != info) 3008 continue; 3009 if (!fb_display[i].mode) 3010 continue; 3011 vc = vc_cons[i].d; 3012 display_to_var(&var, &fb_display[i]); 3013 mode = fb_find_nearest_mode(fb_display[i].mode, 3014 &info->modelist); 3015 fb_videomode_to_var(&var, mode); 3016 fbcon_set_disp(info, &var, vc->vc_num); 3017 } 3018 } 3019 3020 void fbcon_get_requirement(struct fb_info *info, 3021 struct fb_blit_caps *caps) 3022 { 3023 struct vc_data *vc; 3024 struct fbcon_display *p; 3025 3026 if (caps->flags) { 3027 int i, charcnt; 3028 3029 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3030 vc = vc_cons[i].d; 3031 if (vc && vc->vc_mode == KD_TEXT && 3032 info->node == con2fb_map[i]) { 3033 p = &fb_display[i]; 3034 caps->x |= 1 << (vc->vc_font.width - 1); 3035 caps->y |= 1 << (vc->vc_font.height - 1); 3036 charcnt = (p->userfont) ? 3037 FNTCHARCNT(p->fontdata) : 256; 3038 if (caps->len < charcnt) 3039 caps->len = charcnt; 3040 } 3041 } 3042 } else { 3043 vc = vc_cons[fg_console].d; 3044 3045 if (vc && vc->vc_mode == KD_TEXT && 3046 info->node == con2fb_map[fg_console]) { 3047 p = &fb_display[fg_console]; 3048 caps->x = 1 << (vc->vc_font.width - 1); 3049 caps->y = 1 << (vc->vc_font.height - 1); 3050 caps->len = (p->userfont) ? 3051 FNTCHARCNT(p->fontdata) : 256; 3052 } 3053 } 3054 } 3055 3056 int fbcon_set_con2fb_map_ioctl(void __user *argp) 3057 { 3058 struct fb_con2fbmap con2fb; 3059 int ret; 3060 3061 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3062 return -EFAULT; 3063 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3064 return -EINVAL; 3065 if (con2fb.framebuffer >= FB_MAX) 3066 return -EINVAL; 3067 if (!registered_fb[con2fb.framebuffer]) 3068 request_module("fb%d", con2fb.framebuffer); 3069 if (!registered_fb[con2fb.framebuffer]) { 3070 return -EINVAL; 3071 } 3072 3073 console_lock(); 3074 ret = set_con2fb_map(con2fb.console - 1, 3075 con2fb.framebuffer, 1); 3076 console_unlock(); 3077 3078 return ret; 3079 } 3080 3081 int fbcon_get_con2fb_map_ioctl(void __user *argp) 3082 { 3083 struct fb_con2fbmap con2fb; 3084 3085 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3086 return -EFAULT; 3087 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3088 return -EINVAL; 3089 3090 console_lock(); 3091 con2fb.framebuffer = con2fb_map[con2fb.console - 1]; 3092 console_unlock(); 3093 3094 return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; 3095 } 3096 3097 /* 3098 * The console `switch' structure for the frame buffer based console 3099 */ 3100 3101 static const struct consw fb_con = { 3102 .owner = THIS_MODULE, 3103 .con_startup = fbcon_startup, 3104 .con_init = fbcon_init, 3105 .con_deinit = fbcon_deinit, 3106 .con_clear = fbcon_clear, 3107 .con_putc = fbcon_putc, 3108 .con_putcs = fbcon_putcs, 3109 .con_cursor = fbcon_cursor, 3110 .con_scroll = fbcon_scroll, 3111 .con_switch = fbcon_switch, 3112 .con_blank = fbcon_blank, 3113 .con_font_set = fbcon_set_font, 3114 .con_font_get = fbcon_get_font, 3115 .con_font_default = fbcon_set_def_font, 3116 .con_font_copy = fbcon_copy_font, 3117 .con_set_palette = fbcon_set_palette, 3118 .con_invert_region = fbcon_invert_region, 3119 .con_screen_pos = fbcon_screen_pos, 3120 .con_getxy = fbcon_getxy, 3121 .con_resize = fbcon_resize, 3122 .con_debug_enter = fbcon_debug_enter, 3123 .con_debug_leave = fbcon_debug_leave, 3124 }; 3125 3126 static ssize_t store_rotate(struct device *device, 3127 struct device_attribute *attr, const char *buf, 3128 size_t count) 3129 { 3130 struct fb_info *info; 3131 int rotate, idx; 3132 char **last = NULL; 3133 3134 console_lock(); 3135 idx = con2fb_map[fg_console]; 3136 3137 if (idx == -1 || registered_fb[idx] == NULL) 3138 goto err; 3139 3140 info = registered_fb[idx]; 3141 rotate = simple_strtoul(buf, last, 0); 3142 fbcon_rotate(info, rotate); 3143 err: 3144 console_unlock(); 3145 return count; 3146 } 3147 3148 static ssize_t store_rotate_all(struct device *device, 3149 struct device_attribute *attr,const char *buf, 3150 size_t count) 3151 { 3152 struct fb_info *info; 3153 int rotate, idx; 3154 char **last = NULL; 3155 3156 console_lock(); 3157 idx = con2fb_map[fg_console]; 3158 3159 if (idx == -1 || registered_fb[idx] == NULL) 3160 goto err; 3161 3162 info = registered_fb[idx]; 3163 rotate = simple_strtoul(buf, last, 0); 3164 fbcon_rotate_all(info, rotate); 3165 err: 3166 console_unlock(); 3167 return count; 3168 } 3169 3170 static ssize_t show_rotate(struct device *device, 3171 struct device_attribute *attr,char *buf) 3172 { 3173 struct fb_info *info; 3174 int rotate = 0, idx; 3175 3176 console_lock(); 3177 idx = con2fb_map[fg_console]; 3178 3179 if (idx == -1 || registered_fb[idx] == NULL) 3180 goto err; 3181 3182 info = registered_fb[idx]; 3183 rotate = fbcon_get_rotate(info); 3184 err: 3185 console_unlock(); 3186 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3187 } 3188 3189 static ssize_t show_cursor_blink(struct device *device, 3190 struct device_attribute *attr, char *buf) 3191 { 3192 struct fb_info *info; 3193 struct fbcon_ops *ops; 3194 int idx, blink = -1; 3195 3196 console_lock(); 3197 idx = con2fb_map[fg_console]; 3198 3199 if (idx == -1 || registered_fb[idx] == NULL) 3200 goto err; 3201 3202 info = registered_fb[idx]; 3203 ops = info->fbcon_par; 3204 3205 if (!ops) 3206 goto err; 3207 3208 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3209 err: 3210 console_unlock(); 3211 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3212 } 3213 3214 static ssize_t store_cursor_blink(struct device *device, 3215 struct device_attribute *attr, 3216 const char *buf, size_t count) 3217 { 3218 struct fb_info *info; 3219 int blink, idx; 3220 char **last = NULL; 3221 3222 console_lock(); 3223 idx = con2fb_map[fg_console]; 3224 3225 if (idx == -1 || registered_fb[idx] == NULL) 3226 goto err; 3227 3228 info = registered_fb[idx]; 3229 3230 if (!info->fbcon_par) 3231 goto err; 3232 3233 blink = simple_strtoul(buf, last, 0); 3234 3235 if (blink) { 3236 fbcon_cursor_noblink = 0; 3237 fbcon_add_cursor_timer(info); 3238 } else { 3239 fbcon_cursor_noblink = 1; 3240 fbcon_del_cursor_timer(info); 3241 } 3242 3243 err: 3244 console_unlock(); 3245 return count; 3246 } 3247 3248 static struct device_attribute device_attrs[] = { 3249 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3250 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3251 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3252 store_cursor_blink), 3253 }; 3254 3255 static int fbcon_init_device(void) 3256 { 3257 int i, error = 0; 3258 3259 fbcon_has_sysfs = 1; 3260 3261 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3262 error = device_create_file(fbcon_device, &device_attrs[i]); 3263 3264 if (error) 3265 break; 3266 } 3267 3268 if (error) { 3269 while (--i >= 0) 3270 device_remove_file(fbcon_device, &device_attrs[i]); 3271 3272 fbcon_has_sysfs = 0; 3273 } 3274 3275 return 0; 3276 } 3277 3278 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3279 static void fbcon_register_existing_fbs(struct work_struct *work) 3280 { 3281 int i; 3282 3283 console_lock(); 3284 3285 for_each_registered_fb(i) 3286 fbcon_fb_registered(registered_fb[i]); 3287 3288 console_unlock(); 3289 } 3290 3291 static struct notifier_block fbcon_output_nb; 3292 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); 3293 3294 static int fbcon_output_notifier(struct notifier_block *nb, 3295 unsigned long action, void *data) 3296 { 3297 WARN_CONSOLE_UNLOCKED(); 3298 3299 pr_info("fbcon: Taking over console\n"); 3300 3301 dummycon_unregister_output_notifier(&fbcon_output_nb); 3302 deferred_takeover = false; 3303 logo_shown = FBCON_LOGO_DONTSHOW; 3304 3305 /* We may get called in atomic context */ 3306 schedule_work(&fbcon_deferred_takeover_work); 3307 3308 return NOTIFY_OK; 3309 } 3310 #endif 3311 3312 static void fbcon_start(void) 3313 { 3314 WARN_CONSOLE_UNLOCKED(); 3315 3316 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3317 if (conswitchp != &dummy_con) 3318 deferred_takeover = false; 3319 3320 if (deferred_takeover) { 3321 fbcon_output_nb.notifier_call = fbcon_output_notifier; 3322 dummycon_register_output_notifier(&fbcon_output_nb); 3323 return; 3324 } 3325 #endif 3326 3327 if (num_registered_fb) { 3328 int i; 3329 3330 for_each_registered_fb(i) { 3331 info_idx = i; 3332 break; 3333 } 3334 3335 do_fbcon_takeover(0); 3336 } 3337 } 3338 3339 static void fbcon_exit(void) 3340 { 3341 struct fb_info *info; 3342 int i, j, mapped; 3343 3344 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3345 if (deferred_takeover) { 3346 dummycon_unregister_output_notifier(&fbcon_output_nb); 3347 deferred_takeover = false; 3348 } 3349 #endif 3350 3351 for_each_registered_fb(i) { 3352 int pending = 0; 3353 3354 mapped = 0; 3355 info = registered_fb[i]; 3356 3357 if (info->queue.func) 3358 pending = cancel_work_sync(&info->queue); 3359 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3360 "no")); 3361 3362 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3363 if (con2fb_map[j] == i) { 3364 mapped = 1; 3365 con2fb_map[j] = -1; 3366 } 3367 } 3368 3369 if (mapped) { 3370 if (info->fbops->fb_release) 3371 info->fbops->fb_release(info, 0); 3372 module_put(info->fbops->owner); 3373 3374 if (info->fbcon_par) { 3375 struct fbcon_ops *ops = info->fbcon_par; 3376 3377 fbcon_del_cursor_timer(info); 3378 kfree(ops->cursor_src); 3379 kfree(ops->cursor_state.mask); 3380 kfree(info->fbcon_par); 3381 info->fbcon_par = NULL; 3382 } 3383 3384 if (info->queue.func == fb_flashcursor) 3385 info->queue.func = NULL; 3386 } 3387 } 3388 } 3389 3390 void __init fb_console_init(void) 3391 { 3392 int i; 3393 3394 console_lock(); 3395 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3396 "fbcon"); 3397 3398 if (IS_ERR(fbcon_device)) { 3399 printk(KERN_WARNING "Unable to create device " 3400 "for fbcon; errno = %ld\n", 3401 PTR_ERR(fbcon_device)); 3402 fbcon_device = NULL; 3403 } else 3404 fbcon_init_device(); 3405 3406 for (i = 0; i < MAX_NR_CONSOLES; i++) 3407 con2fb_map[i] = -1; 3408 3409 fbcon_start(); 3410 console_unlock(); 3411 } 3412 3413 #ifdef MODULE 3414 3415 static void __exit fbcon_deinit_device(void) 3416 { 3417 int i; 3418 3419 if (fbcon_has_sysfs) { 3420 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3421 device_remove_file(fbcon_device, &device_attrs[i]); 3422 3423 fbcon_has_sysfs = 0; 3424 } 3425 } 3426 3427 void __exit fb_console_exit(void) 3428 { 3429 console_lock(); 3430 fbcon_deinit_device(); 3431 device_destroy(fb_class, MKDEV(0, 0)); 3432 fbcon_exit(); 3433 do_unregister_con_driver(&fb_con); 3434 console_unlock(); 3435 } 3436 #endif 3437