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 /* Software scrollback */ 126 static int fbcon_softback_size = 32768; 127 static unsigned long softback_buf, softback_curr; 128 static unsigned long softback_in; 129 static unsigned long softback_top, softback_end; 130 static int softback_lines; 131 /* console mappings */ 132 static int first_fb_vc; 133 static int last_fb_vc = MAX_NR_CONSOLES - 1; 134 static int fbcon_is_default = 1; 135 static int primary_device = -1; 136 static int fbcon_has_console_bind; 137 138 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 139 static int map_override; 140 141 static inline void fbcon_map_override(void) 142 { 143 map_override = 1; 144 } 145 #else 146 static inline void fbcon_map_override(void) 147 { 148 } 149 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */ 150 151 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 152 static bool deferred_takeover = true; 153 #else 154 #define deferred_takeover false 155 #endif 156 157 /* font data */ 158 static char fontname[40]; 159 160 /* current fb_info */ 161 static int info_idx = -1; 162 163 /* console rotation */ 164 static int initial_rotation = -1; 165 static int fbcon_has_sysfs; 166 static int margin_color; 167 168 static const struct consw fb_con; 169 170 #define CM_SOFTBACK (8) 171 172 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) 173 174 static int fbcon_set_origin(struct vc_data *); 175 176 static int fbcon_cursor_noblink; 177 178 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) 179 180 /* 181 * Interface used by the world 182 */ 183 184 static const char *fbcon_startup(void); 185 static void fbcon_init(struct vc_data *vc, int init); 186 static void fbcon_deinit(struct vc_data *vc); 187 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 188 int width); 189 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); 190 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 191 int count, int ypos, int xpos); 192 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); 193 static void fbcon_cursor(struct vc_data *vc, int mode); 194 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 195 int height, int width); 196 static int fbcon_switch(struct vc_data *vc); 197 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); 198 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table); 199 200 /* 201 * Internal routines 202 */ 203 static __inline__ void ywrap_up(struct vc_data *vc, int count); 204 static __inline__ void ywrap_down(struct vc_data *vc, int count); 205 static __inline__ void ypan_up(struct vc_data *vc, int count); 206 static __inline__ void ypan_down(struct vc_data *vc, int count); 207 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, 208 int dy, int dx, int height, int width, u_int y_break); 209 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 210 int unit); 211 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, 212 int line, int count, int dy); 213 static void fbcon_modechanged(struct fb_info *info); 214 static void fbcon_set_all_vcs(struct fb_info *info); 215 static void fbcon_start(void); 216 static void fbcon_exit(void); 217 static struct device *fbcon_device; 218 219 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION 220 static inline void fbcon_set_rotation(struct fb_info *info) 221 { 222 struct fbcon_ops *ops = info->fbcon_par; 223 224 if (!(info->flags & FBINFO_MISC_TILEBLITTING) && 225 ops->p->con_rotate < 4) 226 ops->rotate = ops->p->con_rotate; 227 else 228 ops->rotate = 0; 229 } 230 231 static void fbcon_rotate(struct fb_info *info, u32 rotate) 232 { 233 struct fbcon_ops *ops= info->fbcon_par; 234 struct fb_info *fb_info; 235 236 if (!ops || ops->currcon == -1) 237 return; 238 239 fb_info = registered_fb[con2fb_map[ops->currcon]]; 240 241 if (info == fb_info) { 242 struct fbcon_display *p = &fb_display[ops->currcon]; 243 244 if (rotate < 4) 245 p->con_rotate = rotate; 246 else 247 p->con_rotate = 0; 248 249 fbcon_modechanged(info); 250 } 251 } 252 253 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 254 { 255 struct fbcon_ops *ops = info->fbcon_par; 256 struct vc_data *vc; 257 struct fbcon_display *p; 258 int i; 259 260 if (!ops || ops->currcon < 0 || rotate > 3) 261 return; 262 263 for (i = first_fb_vc; i <= last_fb_vc; i++) { 264 vc = vc_cons[i].d; 265 if (!vc || vc->vc_mode != KD_TEXT || 266 registered_fb[con2fb_map[i]] != info) 267 continue; 268 269 p = &fb_display[vc->vc_num]; 270 p->con_rotate = rotate; 271 } 272 273 fbcon_set_all_vcs(info); 274 } 275 #else 276 static inline void fbcon_set_rotation(struct fb_info *info) 277 { 278 struct fbcon_ops *ops = info->fbcon_par; 279 280 ops->rotate = FB_ROTATE_UR; 281 } 282 283 static void fbcon_rotate(struct fb_info *info, u32 rotate) 284 { 285 return; 286 } 287 288 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 289 { 290 return; 291 } 292 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ 293 294 static int fbcon_get_rotate(struct fb_info *info) 295 { 296 struct fbcon_ops *ops = info->fbcon_par; 297 298 return (ops) ? ops->rotate : 0; 299 } 300 301 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) 302 { 303 struct fbcon_ops *ops = info->fbcon_par; 304 305 return (info->state != FBINFO_STATE_RUNNING || 306 vc->vc_mode != KD_TEXT || ops->graphics); 307 } 308 309 static int get_color(struct vc_data *vc, struct fb_info *info, 310 u16 c, int is_fg) 311 { 312 int depth = fb_get_color_depth(&info->var, &info->fix); 313 int color = 0; 314 315 if (console_blanked) { 316 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; 317 318 c = vc->vc_video_erase_char & charmask; 319 } 320 321 if (depth != 1) 322 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) 323 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); 324 325 switch (depth) { 326 case 1: 327 { 328 int col = mono_col(info); 329 /* 0 or 1 */ 330 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; 331 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; 332 333 if (console_blanked) 334 fg = bg; 335 336 color = (is_fg) ? fg : bg; 337 break; 338 } 339 case 2: 340 /* 341 * Scale down 16-colors to 4 colors. Default 4-color palette 342 * is grayscale. However, simply dividing the values by 4 343 * will not work, as colors 1, 2 and 3 will be scaled-down 344 * to zero rendering them invisible. So empirically convert 345 * colors to a sane 4-level grayscale. 346 */ 347 switch (color) { 348 case 0: 349 color = 0; /* black */ 350 break; 351 case 1 ... 6: 352 color = 2; /* white */ 353 break; 354 case 7 ... 8: 355 color = 1; /* gray */ 356 break; 357 default: 358 color = 3; /* intense white */ 359 break; 360 } 361 break; 362 case 3: 363 /* 364 * Last 8 entries of default 16-color palette is a more intense 365 * version of the first 8 (i.e., same chrominance, different 366 * luminance). 367 */ 368 color &= 7; 369 break; 370 } 371 372 373 return color; 374 } 375 376 static void fbcon_update_softback(struct vc_data *vc) 377 { 378 int l = fbcon_softback_size / vc->vc_size_row; 379 380 if (l > 5) 381 softback_end = softback_buf + l * vc->vc_size_row; 382 else 383 /* Smaller scrollback makes no sense, and 0 would screw 384 the operation totally */ 385 softback_top = 0; 386 } 387 388 static void fb_flashcursor(struct work_struct *work) 389 { 390 struct fb_info *info = container_of(work, struct fb_info, queue); 391 struct fbcon_ops *ops = info->fbcon_par; 392 struct vc_data *vc = NULL; 393 int c; 394 int mode; 395 int ret; 396 397 /* FIXME: we should sort out the unbind locking instead */ 398 /* instead we just fail to flash the cursor if we can't get 399 * the lock instead of blocking fbcon deinit */ 400 ret = console_trylock(); 401 if (ret == 0) 402 return; 403 404 if (ops && ops->currcon != -1) 405 vc = vc_cons[ops->currcon].d; 406 407 if (!vc || !con_is_visible(vc) || 408 registered_fb[con2fb_map[vc->vc_num]] != info || 409 vc->vc_deccm != 1) { 410 console_unlock(); 411 return; 412 } 413 414 c = scr_readw((u16 *) vc->vc_pos); 415 mode = (!ops->cursor_flash || ops->cursor_state.enable) ? 416 CM_ERASE : CM_DRAW; 417 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1), 418 get_color(vc, info, c, 0)); 419 console_unlock(); 420 } 421 422 static void cursor_timer_handler(struct timer_list *t) 423 { 424 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer); 425 struct fb_info *info = ops->info; 426 427 queue_work(system_power_efficient_wq, &info->queue); 428 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 429 } 430 431 static void fbcon_add_cursor_timer(struct fb_info *info) 432 { 433 struct fbcon_ops *ops = info->fbcon_par; 434 435 if ((!info->queue.func || info->queue.func == fb_flashcursor) && 436 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) && 437 !fbcon_cursor_noblink) { 438 if (!info->queue.func) 439 INIT_WORK(&info->queue, fb_flashcursor); 440 441 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0); 442 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 443 ops->flags |= FBCON_FLAGS_CURSOR_TIMER; 444 } 445 } 446 447 static void fbcon_del_cursor_timer(struct fb_info *info) 448 { 449 struct fbcon_ops *ops = info->fbcon_par; 450 451 if (info->queue.func == fb_flashcursor && 452 ops->flags & FBCON_FLAGS_CURSOR_TIMER) { 453 del_timer_sync(&ops->cursor_timer); 454 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; 455 } 456 } 457 458 #ifndef MODULE 459 static int __init fb_console_setup(char *this_opt) 460 { 461 char *options; 462 int i, j; 463 464 if (!this_opt || !*this_opt) 465 return 1; 466 467 while ((options = strsep(&this_opt, ",")) != NULL) { 468 if (!strncmp(options, "font:", 5)) { 469 strlcpy(fontname, options + 5, sizeof(fontname)); 470 continue; 471 } 472 473 if (!strncmp(options, "scrollback:", 11)) { 474 options += 11; 475 if (*options) { 476 fbcon_softback_size = simple_strtoul(options, &options, 0); 477 if (*options == 'k' || *options == 'K') { 478 fbcon_softback_size *= 1024; 479 } 480 } 481 continue; 482 } 483 484 if (!strncmp(options, "map:", 4)) { 485 options += 4; 486 if (*options) { 487 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { 488 if (!options[j]) 489 j = 0; 490 con2fb_map_boot[i] = 491 (options[j++]-'0') % FB_MAX; 492 } 493 494 fbcon_map_override(); 495 } 496 continue; 497 } 498 499 if (!strncmp(options, "vc:", 3)) { 500 options += 3; 501 if (*options) 502 first_fb_vc = simple_strtoul(options, &options, 10) - 1; 503 if (first_fb_vc < 0) 504 first_fb_vc = 0; 505 if (*options++ == '-') 506 last_fb_vc = simple_strtoul(options, &options, 10) - 1; 507 fbcon_is_default = 0; 508 continue; 509 } 510 511 if (!strncmp(options, "rotate:", 7)) { 512 options += 7; 513 if (*options) 514 initial_rotation = simple_strtoul(options, &options, 0); 515 if (initial_rotation > 3) 516 initial_rotation = 0; 517 continue; 518 } 519 520 if (!strncmp(options, "margin:", 7)) { 521 options += 7; 522 if (*options) 523 margin_color = simple_strtoul(options, &options, 0); 524 continue; 525 } 526 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 527 if (!strcmp(options, "nodefer")) { 528 deferred_takeover = false; 529 continue; 530 } 531 #endif 532 533 if (!strncmp(options, "logo-pos:", 9)) { 534 options += 9; 535 if (!strcmp(options, "center")) 536 fb_center_logo = true; 537 continue; 538 } 539 540 if (!strncmp(options, "logo-count:", 11)) { 541 options += 11; 542 if (*options) 543 fb_logo_count = simple_strtol(options, &options, 0); 544 continue; 545 } 546 } 547 return 1; 548 } 549 550 __setup("fbcon=", fb_console_setup); 551 #endif 552 553 static int search_fb_in_map(int idx) 554 { 555 int i, retval = 0; 556 557 for (i = first_fb_vc; i <= last_fb_vc; i++) { 558 if (con2fb_map[i] == idx) 559 retval = 1; 560 } 561 return retval; 562 } 563 564 static int search_for_mapped_con(void) 565 { 566 int i, retval = 0; 567 568 for (i = first_fb_vc; i <= last_fb_vc; i++) { 569 if (con2fb_map[i] != -1) 570 retval = 1; 571 } 572 return retval; 573 } 574 575 static int do_fbcon_takeover(int show_logo) 576 { 577 int err, i; 578 579 if (!num_registered_fb) 580 return -ENODEV; 581 582 if (!show_logo) 583 logo_shown = FBCON_LOGO_DONTSHOW; 584 585 for (i = first_fb_vc; i <= last_fb_vc; i++) 586 con2fb_map[i] = info_idx; 587 588 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, 589 fbcon_is_default); 590 591 if (err) { 592 for (i = first_fb_vc; i <= last_fb_vc; i++) 593 con2fb_map[i] = -1; 594 info_idx = -1; 595 } else { 596 fbcon_has_console_bind = 1; 597 } 598 599 return err; 600 } 601 602 #ifdef MODULE 603 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 604 int cols, int rows, int new_cols, int new_rows) 605 { 606 logo_shown = FBCON_LOGO_DONTSHOW; 607 } 608 #else 609 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 610 int cols, int rows, int new_cols, int new_rows) 611 { 612 /* Need to make room for the logo */ 613 struct fbcon_ops *ops = info->fbcon_par; 614 int cnt, erase = vc->vc_video_erase_char, step; 615 unsigned short *save = NULL, *r, *q; 616 int logo_height; 617 618 if (info->fbops->owner) { 619 logo_shown = FBCON_LOGO_DONTSHOW; 620 return; 621 } 622 623 /* 624 * remove underline attribute from erase character 625 * if black and white framebuffer. 626 */ 627 if (fb_get_color_depth(&info->var, &info->fix) == 1) 628 erase &= ~0x400; 629 logo_height = fb_prepare_logo(info, ops->rotate); 630 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); 631 q = (unsigned short *) (vc->vc_origin + 632 vc->vc_size_row * rows); 633 step = logo_lines * cols; 634 for (r = q - logo_lines * cols; r < q; r++) 635 if (scr_readw(r) != vc->vc_video_erase_char) 636 break; 637 if (r != q && new_rows >= rows + logo_lines) { 638 save = kmalloc(array3_size(logo_lines, new_cols, 2), 639 GFP_KERNEL); 640 if (save) { 641 int i = cols < new_cols ? cols : new_cols; 642 scr_memsetw(save, erase, logo_lines * new_cols * 2); 643 r = q - step; 644 for (cnt = 0; cnt < logo_lines; cnt++, r += i) 645 scr_memcpyw(save + cnt * new_cols, r, 2 * i); 646 r = q; 647 } 648 } 649 if (r == q) { 650 /* We can scroll screen down */ 651 r = q - step - cols; 652 for (cnt = rows - logo_lines; cnt > 0; cnt--) { 653 scr_memcpyw(r + step, r, vc->vc_size_row); 654 r -= cols; 655 } 656 if (!save) { 657 int lines; 658 if (vc->vc_y + logo_lines >= rows) 659 lines = rows - vc->vc_y - 1; 660 else 661 lines = logo_lines; 662 vc->vc_y += lines; 663 vc->vc_pos += lines * vc->vc_size_row; 664 } 665 } 666 scr_memsetw((unsigned short *) vc->vc_origin, 667 erase, 668 vc->vc_size_row * logo_lines); 669 670 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 671 fbcon_clear_margins(vc, 0); 672 update_screen(vc); 673 } 674 675 if (save) { 676 q = (unsigned short *) (vc->vc_origin + 677 vc->vc_size_row * 678 rows); 679 scr_memcpyw(q, save, logo_lines * new_cols * 2); 680 vc->vc_y += logo_lines; 681 vc->vc_pos += logo_lines * vc->vc_size_row; 682 kfree(save); 683 } 684 685 if (logo_shown == FBCON_LOGO_DONTSHOW) 686 return; 687 688 if (logo_lines > vc->vc_bottom) { 689 logo_shown = FBCON_LOGO_CANSHOW; 690 printk(KERN_INFO 691 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 692 } else { 693 logo_shown = FBCON_LOGO_DRAW; 694 vc->vc_top = logo_lines; 695 } 696 } 697 #endif /* MODULE */ 698 699 #ifdef CONFIG_FB_TILEBLITTING 700 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 701 { 702 struct fbcon_ops *ops = info->fbcon_par; 703 704 ops->p = &fb_display[vc->vc_num]; 705 706 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 707 fbcon_set_tileops(vc, info); 708 else { 709 fbcon_set_rotation(info); 710 fbcon_set_bitops(ops); 711 } 712 } 713 714 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 715 { 716 int err = 0; 717 718 if (info->flags & FBINFO_MISC_TILEBLITTING && 719 info->tileops->fb_get_tilemax(info) < charcount) 720 err = 1; 721 722 return err; 723 } 724 #else 725 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 726 { 727 struct fbcon_ops *ops = info->fbcon_par; 728 729 info->flags &= ~FBINFO_MISC_TILEBLITTING; 730 ops->p = &fb_display[vc->vc_num]; 731 fbcon_set_rotation(info); 732 fbcon_set_bitops(ops); 733 } 734 735 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 736 { 737 return 0; 738 } 739 740 #endif /* CONFIG_MISC_TILEBLITTING */ 741 742 743 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 744 int unit, int oldidx) 745 { 746 struct fbcon_ops *ops = NULL; 747 int err = 0; 748 749 if (!try_module_get(info->fbops->owner)) 750 err = -ENODEV; 751 752 if (!err && info->fbops->fb_open && 753 info->fbops->fb_open(info, 0)) 754 err = -ENODEV; 755 756 if (!err) { 757 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 758 if (!ops) 759 err = -ENOMEM; 760 } 761 762 if (!err) { 763 ops->cur_blink_jiffies = HZ / 5; 764 ops->info = info; 765 info->fbcon_par = ops; 766 767 if (vc) 768 set_blitting_type(vc, info); 769 } 770 771 if (err) { 772 con2fb_map[unit] = oldidx; 773 module_put(info->fbops->owner); 774 } 775 776 return err; 777 } 778 779 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 780 struct fb_info *newinfo, int unit, 781 int oldidx, int found) 782 { 783 struct fbcon_ops *ops = oldinfo->fbcon_par; 784 int err = 0, ret; 785 786 if (oldinfo->fbops->fb_release && 787 oldinfo->fbops->fb_release(oldinfo, 0)) { 788 con2fb_map[unit] = oldidx; 789 if (!found && newinfo->fbops->fb_release) 790 newinfo->fbops->fb_release(newinfo, 0); 791 if (!found) 792 module_put(newinfo->fbops->owner); 793 err = -ENODEV; 794 } 795 796 if (!err) { 797 fbcon_del_cursor_timer(oldinfo); 798 kfree(ops->cursor_state.mask); 799 kfree(ops->cursor_data); 800 kfree(ops->cursor_src); 801 kfree(ops->fontbuffer); 802 kfree(oldinfo->fbcon_par); 803 oldinfo->fbcon_par = NULL; 804 module_put(oldinfo->fbops->owner); 805 /* 806 If oldinfo and newinfo are driving the same hardware, 807 the fb_release() method of oldinfo may attempt to 808 restore the hardware state. This will leave the 809 newinfo in an undefined state. Thus, a call to 810 fb_set_par() may be needed for the newinfo. 811 */ 812 if (newinfo && newinfo->fbops->fb_set_par) { 813 ret = newinfo->fbops->fb_set_par(newinfo); 814 815 if (ret) 816 printk(KERN_ERR "con2fb_release_oldinfo: " 817 "detected unhandled fb_set_par error, " 818 "error code %d\n", ret); 819 } 820 } 821 822 return err; 823 } 824 825 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 826 int unit, int show_logo) 827 { 828 struct fbcon_ops *ops = info->fbcon_par; 829 int ret; 830 831 ops->currcon = fg_console; 832 833 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 834 ret = info->fbops->fb_set_par(info); 835 836 if (ret) 837 printk(KERN_ERR "con2fb_init_display: detected " 838 "unhandled fb_set_par error, " 839 "error code %d\n", ret); 840 } 841 842 ops->flags |= FBCON_FLAGS_INIT; 843 ops->graphics = 0; 844 fbcon_set_disp(info, &info->var, unit); 845 846 if (show_logo) { 847 struct vc_data *fg_vc = vc_cons[fg_console].d; 848 struct fb_info *fg_info = 849 registered_fb[con2fb_map[fg_console]]; 850 851 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 852 fg_vc->vc_rows, fg_vc->vc_cols, 853 fg_vc->vc_rows); 854 } 855 856 update_screen(vc_cons[fg_console].d); 857 } 858 859 /** 860 * set_con2fb_map - map console to frame buffer device 861 * @unit: virtual console number to map 862 * @newidx: frame buffer index to map virtual console to 863 * @user: user request 864 * 865 * Maps a virtual console @unit to a frame buffer device 866 * @newidx. 867 * 868 * This should be called with the console lock held. 869 */ 870 static int set_con2fb_map(int unit, int newidx, int user) 871 { 872 struct vc_data *vc = vc_cons[unit].d; 873 int oldidx = con2fb_map[unit]; 874 struct fb_info *info = registered_fb[newidx]; 875 struct fb_info *oldinfo = NULL; 876 int found, err = 0; 877 878 WARN_CONSOLE_UNLOCKED(); 879 880 if (oldidx == newidx) 881 return 0; 882 883 if (!info) 884 return -EINVAL; 885 886 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 887 info_idx = newidx; 888 return do_fbcon_takeover(0); 889 } 890 891 if (oldidx != -1) 892 oldinfo = registered_fb[oldidx]; 893 894 found = search_fb_in_map(newidx); 895 896 con2fb_map[unit] = newidx; 897 if (!err && !found) 898 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 899 900 901 /* 902 * If old fb is not mapped to any of the consoles, 903 * fbcon should release it. 904 */ 905 if (!err && oldinfo && !search_fb_in_map(oldidx)) 906 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 907 found); 908 909 if (!err) { 910 int show_logo = (fg_console == 0 && !user && 911 logo_shown != FBCON_LOGO_DONTSHOW); 912 913 if (!found) 914 fbcon_add_cursor_timer(info); 915 con2fb_map_boot[unit] = newidx; 916 con2fb_init_display(vc, info, unit, show_logo); 917 } 918 919 if (!search_fb_in_map(info_idx)) 920 info_idx = newidx; 921 922 return err; 923 } 924 925 /* 926 * Low Level Operations 927 */ 928 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 929 static int var_to_display(struct fbcon_display *disp, 930 struct fb_var_screeninfo *var, 931 struct fb_info *info) 932 { 933 disp->xres_virtual = var->xres_virtual; 934 disp->yres_virtual = var->yres_virtual; 935 disp->bits_per_pixel = var->bits_per_pixel; 936 disp->grayscale = var->grayscale; 937 disp->nonstd = var->nonstd; 938 disp->accel_flags = var->accel_flags; 939 disp->height = var->height; 940 disp->width = var->width; 941 disp->red = var->red; 942 disp->green = var->green; 943 disp->blue = var->blue; 944 disp->transp = var->transp; 945 disp->rotate = var->rotate; 946 disp->mode = fb_match_mode(var, &info->modelist); 947 if (disp->mode == NULL) 948 /* This should not happen */ 949 return -EINVAL; 950 return 0; 951 } 952 953 static void display_to_var(struct fb_var_screeninfo *var, 954 struct fbcon_display *disp) 955 { 956 fb_videomode_to_var(var, disp->mode); 957 var->xres_virtual = disp->xres_virtual; 958 var->yres_virtual = disp->yres_virtual; 959 var->bits_per_pixel = disp->bits_per_pixel; 960 var->grayscale = disp->grayscale; 961 var->nonstd = disp->nonstd; 962 var->accel_flags = disp->accel_flags; 963 var->height = disp->height; 964 var->width = disp->width; 965 var->red = disp->red; 966 var->green = disp->green; 967 var->blue = disp->blue; 968 var->transp = disp->transp; 969 var->rotate = disp->rotate; 970 } 971 972 static const char *fbcon_startup(void) 973 { 974 const char *display_desc = "frame buffer device"; 975 struct fbcon_display *p = &fb_display[fg_console]; 976 struct vc_data *vc = vc_cons[fg_console].d; 977 const struct font_desc *font = NULL; 978 struct module *owner; 979 struct fb_info *info = NULL; 980 struct fbcon_ops *ops; 981 int rows, cols; 982 983 /* 984 * If num_registered_fb is zero, this is a call for the dummy part. 985 * The frame buffer devices weren't initialized yet. 986 */ 987 if (!num_registered_fb || info_idx == -1) 988 return display_desc; 989 /* 990 * Instead of blindly using registered_fb[0], we use info_idx, set by 991 * fb_console_init(); 992 */ 993 info = registered_fb[info_idx]; 994 if (!info) 995 return NULL; 996 997 owner = info->fbops->owner; 998 if (!try_module_get(owner)) 999 return NULL; 1000 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 1001 module_put(owner); 1002 return NULL; 1003 } 1004 1005 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 1006 if (!ops) { 1007 module_put(owner); 1008 return NULL; 1009 } 1010 1011 ops->currcon = -1; 1012 ops->graphics = 1; 1013 ops->cur_rotate = -1; 1014 ops->cur_blink_jiffies = HZ / 5; 1015 ops->info = info; 1016 info->fbcon_par = ops; 1017 1018 p->con_rotate = initial_rotation; 1019 if (p->con_rotate == -1) 1020 p->con_rotate = info->fbcon_rotate_hint; 1021 if (p->con_rotate == -1) 1022 p->con_rotate = FB_ROTATE_UR; 1023 1024 set_blitting_type(vc, info); 1025 1026 if (info->fix.type != FB_TYPE_TEXT) { 1027 if (fbcon_softback_size) { 1028 if (!softback_buf) { 1029 softback_buf = 1030 (unsigned long) 1031 kvmalloc(fbcon_softback_size, 1032 GFP_KERNEL); 1033 if (!softback_buf) { 1034 fbcon_softback_size = 0; 1035 softback_top = 0; 1036 } 1037 } 1038 } else { 1039 if (softback_buf) { 1040 kvfree((void *) softback_buf); 1041 softback_buf = 0; 1042 softback_top = 0; 1043 } 1044 } 1045 if (softback_buf) 1046 softback_in = softback_top = softback_curr = 1047 softback_buf; 1048 softback_lines = 0; 1049 } 1050 1051 /* Setup default font */ 1052 if (!p->fontdata && !vc->vc_font.data) { 1053 if (!fontname[0] || !(font = find_font(fontname))) 1054 font = get_default_font(info->var.xres, 1055 info->var.yres, 1056 info->pixmap.blit_x, 1057 info->pixmap.blit_y); 1058 vc->vc_font.width = font->width; 1059 vc->vc_font.height = font->height; 1060 vc->vc_font.data = (void *)(p->fontdata = font->data); 1061 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1062 } else { 1063 p->fontdata = vc->vc_font.data; 1064 } 1065 1066 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1067 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1068 cols /= vc->vc_font.width; 1069 rows /= vc->vc_font.height; 1070 vc_resize(vc, cols, rows); 1071 1072 DPRINTK("mode: %s\n", info->fix.id); 1073 DPRINTK("visual: %d\n", info->fix.visual); 1074 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1075 info->var.yres, 1076 info->var.bits_per_pixel); 1077 1078 fbcon_add_cursor_timer(info); 1079 return display_desc; 1080 } 1081 1082 static void fbcon_init(struct vc_data *vc, int init) 1083 { 1084 struct fb_info *info; 1085 struct fbcon_ops *ops; 1086 struct vc_data **default_mode = vc->vc_display_fg; 1087 struct vc_data *svc = *default_mode; 1088 struct fbcon_display *t, *p = &fb_display[vc->vc_num]; 1089 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1090 int cap, ret; 1091 1092 if (WARN_ON(info_idx == -1)) 1093 return; 1094 1095 if (con2fb_map[vc->vc_num] == -1) 1096 con2fb_map[vc->vc_num] = info_idx; 1097 1098 info = registered_fb[con2fb_map[vc->vc_num]]; 1099 cap = info->flags; 1100 1101 if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET) 1102 logo_shown = FBCON_LOGO_DONTSHOW; 1103 1104 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1105 (info->fix.type == FB_TYPE_TEXT)) 1106 logo = 0; 1107 1108 if (var_to_display(p, &info->var, info)) 1109 return; 1110 1111 if (!info->fbcon_par) 1112 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1113 1114 /* If we are not the first console on this 1115 fb, copy the font from that console */ 1116 t = &fb_display[fg_console]; 1117 if (!p->fontdata) { 1118 if (t->fontdata) { 1119 struct vc_data *fvc = vc_cons[fg_console].d; 1120 1121 vc->vc_font.data = (void *)(p->fontdata = 1122 fvc->vc_font.data); 1123 vc->vc_font.width = fvc->vc_font.width; 1124 vc->vc_font.height = fvc->vc_font.height; 1125 p->userfont = t->userfont; 1126 1127 if (p->userfont) 1128 REFCOUNT(p->fontdata)++; 1129 } else { 1130 const struct font_desc *font = NULL; 1131 1132 if (!fontname[0] || !(font = find_font(fontname))) 1133 font = get_default_font(info->var.xres, 1134 info->var.yres, 1135 info->pixmap.blit_x, 1136 info->pixmap.blit_y); 1137 vc->vc_font.width = font->width; 1138 vc->vc_font.height = font->height; 1139 vc->vc_font.data = (void *)(p->fontdata = font->data); 1140 vc->vc_font.charcount = 256; /* FIXME Need to 1141 support more fonts */ 1142 } 1143 } 1144 1145 if (p->userfont) 1146 charcnt = FNTCHARCNT(p->fontdata); 1147 1148 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1149 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1150 if (charcnt == 256) { 1151 vc->vc_hi_font_mask = 0; 1152 } else { 1153 vc->vc_hi_font_mask = 0x100; 1154 if (vc->vc_can_do_color) 1155 vc->vc_complement_mask <<= 1; 1156 } 1157 1158 if (!*svc->vc_uni_pagedir_loc) 1159 con_set_default_unimap(svc); 1160 if (!*vc->vc_uni_pagedir_loc) 1161 con_copy_unimap(vc, svc); 1162 1163 ops = info->fbcon_par; 1164 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1165 1166 p->con_rotate = initial_rotation; 1167 if (p->con_rotate == -1) 1168 p->con_rotate = info->fbcon_rotate_hint; 1169 if (p->con_rotate == -1) 1170 p->con_rotate = FB_ROTATE_UR; 1171 1172 set_blitting_type(vc, info); 1173 1174 cols = vc->vc_cols; 1175 rows = vc->vc_rows; 1176 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1177 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1178 new_cols /= vc->vc_font.width; 1179 new_rows /= vc->vc_font.height; 1180 1181 /* 1182 * We must always set the mode. The mode of the previous console 1183 * driver could be in the same resolution but we are using different 1184 * hardware so we have to initialize the hardware. 1185 * 1186 * We need to do it in fbcon_init() to prevent screen corruption. 1187 */ 1188 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1189 if (info->fbops->fb_set_par && 1190 !(ops->flags & FBCON_FLAGS_INIT)) { 1191 ret = info->fbops->fb_set_par(info); 1192 1193 if (ret) 1194 printk(KERN_ERR "fbcon_init: detected " 1195 "unhandled fb_set_par error, " 1196 "error code %d\n", ret); 1197 } 1198 1199 ops->flags |= FBCON_FLAGS_INIT; 1200 } 1201 1202 ops->graphics = 0; 1203 1204 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1205 !(cap & FBINFO_HWACCEL_DISABLED)) 1206 p->scrollmode = SCROLL_MOVE; 1207 else /* default to something safe */ 1208 p->scrollmode = SCROLL_REDRAW; 1209 1210 /* 1211 * ++guenther: console.c:vc_allocate() relies on initializing 1212 * vc_{cols,rows}, but we must not set those if we are only 1213 * resizing the console. 1214 */ 1215 if (init) { 1216 vc->vc_cols = new_cols; 1217 vc->vc_rows = new_rows; 1218 } else 1219 vc_resize(vc, new_cols, new_rows); 1220 1221 if (logo) 1222 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1223 1224 if (vc == svc && softback_buf) 1225 fbcon_update_softback(vc); 1226 1227 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1228 ops->rotate = FB_ROTATE_UR; 1229 set_blitting_type(vc, info); 1230 } 1231 1232 ops->p = &fb_display[fg_console]; 1233 } 1234 1235 static void fbcon_free_font(struct fbcon_display *p, bool freefont) 1236 { 1237 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1238 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1239 p->fontdata = NULL; 1240 p->userfont = 0; 1241 } 1242 1243 static void set_vc_hi_font(struct vc_data *vc, bool set); 1244 1245 static void fbcon_deinit(struct vc_data *vc) 1246 { 1247 struct fbcon_display *p = &fb_display[vc->vc_num]; 1248 struct fb_info *info; 1249 struct fbcon_ops *ops; 1250 int idx; 1251 bool free_font = true; 1252 1253 idx = con2fb_map[vc->vc_num]; 1254 1255 if (idx == -1) 1256 goto finished; 1257 1258 info = registered_fb[idx]; 1259 1260 if (!info) 1261 goto finished; 1262 1263 if (info->flags & FBINFO_MISC_FIRMWARE) 1264 free_font = false; 1265 ops = info->fbcon_par; 1266 1267 if (!ops) 1268 goto finished; 1269 1270 if (con_is_visible(vc)) 1271 fbcon_del_cursor_timer(info); 1272 1273 ops->flags &= ~FBCON_FLAGS_INIT; 1274 finished: 1275 1276 fbcon_free_font(p, free_font); 1277 if (free_font) 1278 vc->vc_font.data = NULL; 1279 1280 if (vc->vc_hi_font_mask && vc->vc_screenbuf) 1281 set_vc_hi_font(vc, false); 1282 1283 if (!con_is_bound(&fb_con)) 1284 fbcon_exit(); 1285 1286 return; 1287 } 1288 1289 /* ====================================================================== */ 1290 1291 /* fbcon_XXX routines - interface used by the world 1292 * 1293 * This system is now divided into two levels because of complications 1294 * caused by hardware scrolling. Top level functions: 1295 * 1296 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1297 * 1298 * handles y values in range [0, scr_height-1] that correspond to real 1299 * screen positions. y_wrap shift means that first line of bitmap may be 1300 * anywhere on this display. These functions convert lineoffsets to 1301 * bitmap offsets and deal with the wrap-around case by splitting blits. 1302 * 1303 * fbcon_bmove_physical_8() -- These functions fast implementations 1304 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1305 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1306 * 1307 * WARNING: 1308 * 1309 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1310 * Implies should only really hardware scroll in rows. Only reason for 1311 * restriction is simplicity & efficiency at the moment. 1312 */ 1313 1314 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1315 int width) 1316 { 1317 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1318 struct fbcon_ops *ops = info->fbcon_par; 1319 1320 struct fbcon_display *p = &fb_display[vc->vc_num]; 1321 u_int y_break; 1322 1323 if (fbcon_is_inactive(vc, info)) 1324 return; 1325 1326 if (!height || !width) 1327 return; 1328 1329 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1330 vc->vc_top = 0; 1331 /* 1332 * If the font dimensions are not an integral of the display 1333 * dimensions then the ops->clear below won't end up clearing 1334 * the margins. Call clear_margins here in case the logo 1335 * bitmap stretched into the margin area. 1336 */ 1337 fbcon_clear_margins(vc, 0); 1338 } 1339 1340 /* Split blits that cross physical y_wrap boundary */ 1341 1342 y_break = p->vrows - p->yscroll; 1343 if (sy < y_break && sy + height - 1 >= y_break) { 1344 u_int b = y_break - sy; 1345 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1346 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1347 width); 1348 } else 1349 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1350 } 1351 1352 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1353 int count, int ypos, int xpos) 1354 { 1355 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1356 struct fbcon_display *p = &fb_display[vc->vc_num]; 1357 struct fbcon_ops *ops = info->fbcon_par; 1358 1359 if (!fbcon_is_inactive(vc, info)) 1360 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1361 get_color(vc, info, scr_readw(s), 1), 1362 get_color(vc, info, scr_readw(s), 0)); 1363 } 1364 1365 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1366 { 1367 unsigned short chr; 1368 1369 scr_writew(c, &chr); 1370 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1371 } 1372 1373 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1374 { 1375 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1376 struct fbcon_ops *ops = info->fbcon_par; 1377 1378 if (!fbcon_is_inactive(vc, info)) 1379 ops->clear_margins(vc, info, margin_color, bottom_only); 1380 } 1381 1382 static void fbcon_cursor(struct vc_data *vc, int mode) 1383 { 1384 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1385 struct fbcon_ops *ops = info->fbcon_par; 1386 int y; 1387 int c = scr_readw((u16 *) vc->vc_pos); 1388 1389 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1390 1391 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1392 return; 1393 1394 if (vc->vc_cursor_type & 0x10) 1395 fbcon_del_cursor_timer(info); 1396 else 1397 fbcon_add_cursor_timer(info); 1398 1399 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1400 if (mode & CM_SOFTBACK) { 1401 mode &= ~CM_SOFTBACK; 1402 y = softback_lines; 1403 } else { 1404 if (softback_lines) 1405 fbcon_set_origin(vc); 1406 y = 0; 1407 } 1408 1409 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), 1410 get_color(vc, info, c, 0)); 1411 } 1412 1413 static int scrollback_phys_max = 0; 1414 static int scrollback_max = 0; 1415 static int scrollback_current = 0; 1416 1417 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1418 int unit) 1419 { 1420 struct fbcon_display *p, *t; 1421 struct vc_data **default_mode, *vc; 1422 struct vc_data *svc; 1423 struct fbcon_ops *ops = info->fbcon_par; 1424 int rows, cols, charcnt = 256; 1425 1426 p = &fb_display[unit]; 1427 1428 if (var_to_display(p, var, info)) 1429 return; 1430 1431 vc = vc_cons[unit].d; 1432 1433 if (!vc) 1434 return; 1435 1436 default_mode = vc->vc_display_fg; 1437 svc = *default_mode; 1438 t = &fb_display[svc->vc_num]; 1439 1440 if (!vc->vc_font.data) { 1441 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1442 vc->vc_font.width = (*default_mode)->vc_font.width; 1443 vc->vc_font.height = (*default_mode)->vc_font.height; 1444 p->userfont = t->userfont; 1445 if (p->userfont) 1446 REFCOUNT(p->fontdata)++; 1447 } 1448 if (p->userfont) 1449 charcnt = FNTCHARCNT(p->fontdata); 1450 1451 var->activate = FB_ACTIVATE_NOW; 1452 info->var.activate = var->activate; 1453 var->yoffset = info->var.yoffset; 1454 var->xoffset = info->var.xoffset; 1455 fb_set_var(info, var); 1456 ops->var = info->var; 1457 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1458 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1459 if (charcnt == 256) { 1460 vc->vc_hi_font_mask = 0; 1461 } else { 1462 vc->vc_hi_font_mask = 0x100; 1463 if (vc->vc_can_do_color) 1464 vc->vc_complement_mask <<= 1; 1465 } 1466 1467 if (!*svc->vc_uni_pagedir_loc) 1468 con_set_default_unimap(svc); 1469 if (!*vc->vc_uni_pagedir_loc) 1470 con_copy_unimap(vc, svc); 1471 1472 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1473 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1474 cols /= vc->vc_font.width; 1475 rows /= vc->vc_font.height; 1476 vc_resize(vc, cols, rows); 1477 1478 if (con_is_visible(vc)) { 1479 update_screen(vc); 1480 if (softback_buf) 1481 fbcon_update_softback(vc); 1482 } 1483 } 1484 1485 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1486 { 1487 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1488 struct fbcon_ops *ops = info->fbcon_par; 1489 struct fbcon_display *p = &fb_display[vc->vc_num]; 1490 1491 p->yscroll += count; 1492 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1493 p->yscroll -= p->vrows; 1494 ops->var.xoffset = 0; 1495 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1496 ops->var.vmode |= FB_VMODE_YWRAP; 1497 ops->update_start(info); 1498 scrollback_max += count; 1499 if (scrollback_max > scrollback_phys_max) 1500 scrollback_max = scrollback_phys_max; 1501 scrollback_current = 0; 1502 } 1503 1504 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1505 { 1506 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1507 struct fbcon_ops *ops = info->fbcon_par; 1508 struct fbcon_display *p = &fb_display[vc->vc_num]; 1509 1510 p->yscroll -= count; 1511 if (p->yscroll < 0) /* Deal with wrap */ 1512 p->yscroll += p->vrows; 1513 ops->var.xoffset = 0; 1514 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1515 ops->var.vmode |= FB_VMODE_YWRAP; 1516 ops->update_start(info); 1517 scrollback_max -= count; 1518 if (scrollback_max < 0) 1519 scrollback_max = 0; 1520 scrollback_current = 0; 1521 } 1522 1523 static __inline__ void ypan_up(struct vc_data *vc, int count) 1524 { 1525 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1526 struct fbcon_display *p = &fb_display[vc->vc_num]; 1527 struct fbcon_ops *ops = info->fbcon_par; 1528 1529 p->yscroll += count; 1530 if (p->yscroll > p->vrows - vc->vc_rows) { 1531 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1532 0, 0, 0, vc->vc_rows, vc->vc_cols); 1533 p->yscroll -= p->vrows - vc->vc_rows; 1534 } 1535 1536 ops->var.xoffset = 0; 1537 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1538 ops->var.vmode &= ~FB_VMODE_YWRAP; 1539 ops->update_start(info); 1540 fbcon_clear_margins(vc, 1); 1541 scrollback_max += count; 1542 if (scrollback_max > scrollback_phys_max) 1543 scrollback_max = scrollback_phys_max; 1544 scrollback_current = 0; 1545 } 1546 1547 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1548 { 1549 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1550 struct fbcon_ops *ops = info->fbcon_par; 1551 struct fbcon_display *p = &fb_display[vc->vc_num]; 1552 1553 p->yscroll += count; 1554 1555 if (p->yscroll > p->vrows - vc->vc_rows) { 1556 p->yscroll -= p->vrows - vc->vc_rows; 1557 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1558 } 1559 1560 ops->var.xoffset = 0; 1561 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1562 ops->var.vmode &= ~FB_VMODE_YWRAP; 1563 ops->update_start(info); 1564 fbcon_clear_margins(vc, 1); 1565 scrollback_max += count; 1566 if (scrollback_max > scrollback_phys_max) 1567 scrollback_max = scrollback_phys_max; 1568 scrollback_current = 0; 1569 } 1570 1571 static __inline__ void ypan_down(struct vc_data *vc, int count) 1572 { 1573 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1574 struct fbcon_display *p = &fb_display[vc->vc_num]; 1575 struct fbcon_ops *ops = info->fbcon_par; 1576 1577 p->yscroll -= count; 1578 if (p->yscroll < 0) { 1579 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1580 0, vc->vc_rows, vc->vc_cols); 1581 p->yscroll += p->vrows - vc->vc_rows; 1582 } 1583 1584 ops->var.xoffset = 0; 1585 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1586 ops->var.vmode &= ~FB_VMODE_YWRAP; 1587 ops->update_start(info); 1588 fbcon_clear_margins(vc, 1); 1589 scrollback_max -= count; 1590 if (scrollback_max < 0) 1591 scrollback_max = 0; 1592 scrollback_current = 0; 1593 } 1594 1595 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1596 { 1597 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1598 struct fbcon_ops *ops = info->fbcon_par; 1599 struct fbcon_display *p = &fb_display[vc->vc_num]; 1600 1601 p->yscroll -= count; 1602 1603 if (p->yscroll < 0) { 1604 p->yscroll += p->vrows - vc->vc_rows; 1605 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1606 } 1607 1608 ops->var.xoffset = 0; 1609 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1610 ops->var.vmode &= ~FB_VMODE_YWRAP; 1611 ops->update_start(info); 1612 fbcon_clear_margins(vc, 1); 1613 scrollback_max -= count; 1614 if (scrollback_max < 0) 1615 scrollback_max = 0; 1616 scrollback_current = 0; 1617 } 1618 1619 static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p, 1620 long delta) 1621 { 1622 int count = vc->vc_rows; 1623 unsigned short *d, *s; 1624 unsigned long n; 1625 int line = 0; 1626 1627 d = (u16 *) softback_curr; 1628 if (d == (u16 *) softback_in) 1629 d = (u16 *) vc->vc_origin; 1630 n = softback_curr + delta * vc->vc_size_row; 1631 softback_lines -= delta; 1632 if (delta < 0) { 1633 if (softback_curr < softback_top && n < softback_buf) { 1634 n += softback_end - softback_buf; 1635 if (n < softback_top) { 1636 softback_lines -= 1637 (softback_top - n) / vc->vc_size_row; 1638 n = softback_top; 1639 } 1640 } else if (softback_curr >= softback_top 1641 && n < softback_top) { 1642 softback_lines -= 1643 (softback_top - n) / vc->vc_size_row; 1644 n = softback_top; 1645 } 1646 } else { 1647 if (softback_curr > softback_in && n >= softback_end) { 1648 n += softback_buf - softback_end; 1649 if (n > softback_in) { 1650 n = softback_in; 1651 softback_lines = 0; 1652 } 1653 } else if (softback_curr <= softback_in && n > softback_in) { 1654 n = softback_in; 1655 softback_lines = 0; 1656 } 1657 } 1658 if (n == softback_curr) 1659 return; 1660 softback_curr = n; 1661 s = (u16 *) softback_curr; 1662 if (s == (u16 *) softback_in) 1663 s = (u16 *) vc->vc_origin; 1664 while (count--) { 1665 unsigned short *start; 1666 unsigned short *le; 1667 unsigned short c; 1668 int x = 0; 1669 unsigned short attr = 1; 1670 1671 start = s; 1672 le = advance_row(s, 1); 1673 do { 1674 c = scr_readw(s); 1675 if (attr != (c & 0xff00)) { 1676 attr = c & 0xff00; 1677 if (s > start) { 1678 fbcon_putcs(vc, start, s - start, 1679 line, x); 1680 x += s - start; 1681 start = s; 1682 } 1683 } 1684 if (c == scr_readw(d)) { 1685 if (s > start) { 1686 fbcon_putcs(vc, start, s - start, 1687 line, x); 1688 x += s - start + 1; 1689 start = s + 1; 1690 } else { 1691 x++; 1692 start++; 1693 } 1694 } 1695 s++; 1696 d++; 1697 } while (s < le); 1698 if (s > start) 1699 fbcon_putcs(vc, start, s - start, line, x); 1700 line++; 1701 if (d == (u16 *) softback_end) 1702 d = (u16 *) softback_buf; 1703 if (d == (u16 *) softback_in) 1704 d = (u16 *) vc->vc_origin; 1705 if (s == (u16 *) softback_end) 1706 s = (u16 *) softback_buf; 1707 if (s == (u16 *) softback_in) 1708 s = (u16 *) vc->vc_origin; 1709 } 1710 } 1711 1712 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, 1713 int line, int count, int dy) 1714 { 1715 unsigned short *s = (unsigned short *) 1716 (vc->vc_origin + vc->vc_size_row * line); 1717 1718 while (count--) { 1719 unsigned short *start = s; 1720 unsigned short *le = advance_row(s, 1); 1721 unsigned short c; 1722 int x = 0; 1723 unsigned short attr = 1; 1724 1725 do { 1726 c = scr_readw(s); 1727 if (attr != (c & 0xff00)) { 1728 attr = c & 0xff00; 1729 if (s > start) { 1730 fbcon_putcs(vc, start, s - start, 1731 dy, x); 1732 x += s - start; 1733 start = s; 1734 } 1735 } 1736 console_conditional_schedule(); 1737 s++; 1738 } while (s < le); 1739 if (s > start) 1740 fbcon_putcs(vc, start, s - start, dy, x); 1741 console_conditional_schedule(); 1742 dy++; 1743 } 1744 } 1745 1746 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1747 struct fbcon_display *p, int line, int count, int ycount) 1748 { 1749 int offset = ycount * vc->vc_cols; 1750 unsigned short *d = (unsigned short *) 1751 (vc->vc_origin + vc->vc_size_row * line); 1752 unsigned short *s = d + offset; 1753 struct fbcon_ops *ops = info->fbcon_par; 1754 1755 while (count--) { 1756 unsigned short *start = s; 1757 unsigned short *le = advance_row(s, 1); 1758 unsigned short c; 1759 int x = 0; 1760 1761 do { 1762 c = scr_readw(s); 1763 1764 if (c == scr_readw(d)) { 1765 if (s > start) { 1766 ops->bmove(vc, info, line + ycount, x, 1767 line, x, 1, s-start); 1768 x += s - start + 1; 1769 start = s + 1; 1770 } else { 1771 x++; 1772 start++; 1773 } 1774 } 1775 1776 scr_writew(c, d); 1777 console_conditional_schedule(); 1778 s++; 1779 d++; 1780 } while (s < le); 1781 if (s > start) 1782 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1783 s-start); 1784 console_conditional_schedule(); 1785 if (ycount > 0) 1786 line++; 1787 else { 1788 line--; 1789 /* NOTE: We subtract two lines from these pointers */ 1790 s -= vc->vc_size_row; 1791 d -= vc->vc_size_row; 1792 } 1793 } 1794 } 1795 1796 static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p, 1797 int line, int count, int offset) 1798 { 1799 unsigned short *d = (unsigned short *) 1800 (vc->vc_origin + vc->vc_size_row * line); 1801 unsigned short *s = d + offset; 1802 1803 while (count--) { 1804 unsigned short *start = s; 1805 unsigned short *le = advance_row(s, 1); 1806 unsigned short c; 1807 int x = 0; 1808 unsigned short attr = 1; 1809 1810 do { 1811 c = scr_readw(s); 1812 if (attr != (c & 0xff00)) { 1813 attr = c & 0xff00; 1814 if (s > start) { 1815 fbcon_putcs(vc, start, s - start, 1816 line, x); 1817 x += s - start; 1818 start = s; 1819 } 1820 } 1821 if (c == scr_readw(d)) { 1822 if (s > start) { 1823 fbcon_putcs(vc, start, s - start, 1824 line, x); 1825 x += s - start + 1; 1826 start = s + 1; 1827 } else { 1828 x++; 1829 start++; 1830 } 1831 } 1832 scr_writew(c, d); 1833 console_conditional_schedule(); 1834 s++; 1835 d++; 1836 } while (s < le); 1837 if (s > start) 1838 fbcon_putcs(vc, start, s - start, line, x); 1839 console_conditional_schedule(); 1840 if (offset > 0) 1841 line++; 1842 else { 1843 line--; 1844 /* NOTE: We subtract two lines from these pointers */ 1845 s -= vc->vc_size_row; 1846 d -= vc->vc_size_row; 1847 } 1848 } 1849 } 1850 1851 static inline void fbcon_softback_note(struct vc_data *vc, int t, 1852 int count) 1853 { 1854 unsigned short *p; 1855 1856 if (vc->vc_num != fg_console) 1857 return; 1858 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); 1859 1860 while (count) { 1861 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); 1862 count--; 1863 p = advance_row(p, 1); 1864 softback_in += vc->vc_size_row; 1865 if (softback_in == softback_end) 1866 softback_in = softback_buf; 1867 if (softback_in == softback_top) { 1868 softback_top += vc->vc_size_row; 1869 if (softback_top == softback_end) 1870 softback_top = softback_buf; 1871 } 1872 } 1873 softback_curr = softback_in; 1874 } 1875 1876 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1877 enum con_scroll dir, unsigned int count) 1878 { 1879 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1880 struct fbcon_display *p = &fb_display[vc->vc_num]; 1881 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1882 1883 if (fbcon_is_inactive(vc, info)) 1884 return true; 1885 1886 fbcon_cursor(vc, CM_ERASE); 1887 1888 /* 1889 * ++Geert: Only use ywrap/ypan if the console is in text mode 1890 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1891 * whole screen (prevents flicker). 1892 */ 1893 1894 switch (dir) { 1895 case SM_UP: 1896 if (count > vc->vc_rows) /* Maximum realistic size */ 1897 count = vc->vc_rows; 1898 if (softback_top) 1899 fbcon_softback_note(vc, t, count); 1900 if (logo_shown >= 0) 1901 goto redraw_up; 1902 switch (p->scrollmode) { 1903 case SCROLL_MOVE: 1904 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1905 count); 1906 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1907 scr_memsetw((unsigned short *) (vc->vc_origin + 1908 vc->vc_size_row * 1909 (b - count)), 1910 vc->vc_video_erase_char, 1911 vc->vc_size_row * count); 1912 return true; 1913 break; 1914 1915 case SCROLL_WRAP_MOVE: 1916 if (b - t - count > 3 * vc->vc_rows >> 2) { 1917 if (t > 0) 1918 fbcon_bmove(vc, 0, 0, count, 0, t, 1919 vc->vc_cols); 1920 ywrap_up(vc, count); 1921 if (vc->vc_rows - b > 0) 1922 fbcon_bmove(vc, b - count, 0, b, 0, 1923 vc->vc_rows - b, 1924 vc->vc_cols); 1925 } else if (info->flags & FBINFO_READS_FAST) 1926 fbcon_bmove(vc, t + count, 0, t, 0, 1927 b - t - count, vc->vc_cols); 1928 else 1929 goto redraw_up; 1930 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1931 break; 1932 1933 case SCROLL_PAN_REDRAW: 1934 if ((p->yscroll + count <= 1935 2 * (p->vrows - vc->vc_rows)) 1936 && ((!scroll_partial && (b - t == vc->vc_rows)) 1937 || (scroll_partial 1938 && (b - t - count > 1939 3 * vc->vc_rows >> 2)))) { 1940 if (t > 0) 1941 fbcon_redraw_move(vc, p, 0, t, count); 1942 ypan_up_redraw(vc, t, count); 1943 if (vc->vc_rows - b > 0) 1944 fbcon_redraw_move(vc, p, b, 1945 vc->vc_rows - b, b); 1946 } else 1947 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1948 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1949 break; 1950 1951 case SCROLL_PAN_MOVE: 1952 if ((p->yscroll + count <= 1953 2 * (p->vrows - vc->vc_rows)) 1954 && ((!scroll_partial && (b - t == vc->vc_rows)) 1955 || (scroll_partial 1956 && (b - t - count > 1957 3 * vc->vc_rows >> 2)))) { 1958 if (t > 0) 1959 fbcon_bmove(vc, 0, 0, count, 0, t, 1960 vc->vc_cols); 1961 ypan_up(vc, count); 1962 if (vc->vc_rows - b > 0) 1963 fbcon_bmove(vc, b - count, 0, b, 0, 1964 vc->vc_rows - b, 1965 vc->vc_cols); 1966 } else if (info->flags & FBINFO_READS_FAST) 1967 fbcon_bmove(vc, t + count, 0, t, 0, 1968 b - t - count, vc->vc_cols); 1969 else 1970 goto redraw_up; 1971 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1972 break; 1973 1974 case SCROLL_REDRAW: 1975 redraw_up: 1976 fbcon_redraw(vc, p, t, b - t - count, 1977 count * vc->vc_cols); 1978 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1979 scr_memsetw((unsigned short *) (vc->vc_origin + 1980 vc->vc_size_row * 1981 (b - count)), 1982 vc->vc_video_erase_char, 1983 vc->vc_size_row * count); 1984 return true; 1985 } 1986 break; 1987 1988 case SM_DOWN: 1989 if (count > vc->vc_rows) /* Maximum realistic size */ 1990 count = vc->vc_rows; 1991 if (logo_shown >= 0) 1992 goto redraw_down; 1993 switch (p->scrollmode) { 1994 case SCROLL_MOVE: 1995 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1996 -count); 1997 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1998 scr_memsetw((unsigned short *) (vc->vc_origin + 1999 vc->vc_size_row * 2000 t), 2001 vc->vc_video_erase_char, 2002 vc->vc_size_row * count); 2003 return true; 2004 break; 2005 2006 case SCROLL_WRAP_MOVE: 2007 if (b - t - count > 3 * vc->vc_rows >> 2) { 2008 if (vc->vc_rows - b > 0) 2009 fbcon_bmove(vc, b, 0, b - count, 0, 2010 vc->vc_rows - b, 2011 vc->vc_cols); 2012 ywrap_down(vc, count); 2013 if (t > 0) 2014 fbcon_bmove(vc, count, 0, 0, 0, t, 2015 vc->vc_cols); 2016 } else if (info->flags & FBINFO_READS_FAST) 2017 fbcon_bmove(vc, t, 0, t + count, 0, 2018 b - t - count, vc->vc_cols); 2019 else 2020 goto redraw_down; 2021 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2022 break; 2023 2024 case SCROLL_PAN_MOVE: 2025 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 2026 && ((!scroll_partial && (b - t == vc->vc_rows)) 2027 || (scroll_partial 2028 && (b - t - count > 2029 3 * vc->vc_rows >> 2)))) { 2030 if (vc->vc_rows - b > 0) 2031 fbcon_bmove(vc, b, 0, b - count, 0, 2032 vc->vc_rows - b, 2033 vc->vc_cols); 2034 ypan_down(vc, count); 2035 if (t > 0) 2036 fbcon_bmove(vc, count, 0, 0, 0, t, 2037 vc->vc_cols); 2038 } else if (info->flags & FBINFO_READS_FAST) 2039 fbcon_bmove(vc, t, 0, t + count, 0, 2040 b - t - count, vc->vc_cols); 2041 else 2042 goto redraw_down; 2043 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2044 break; 2045 2046 case SCROLL_PAN_REDRAW: 2047 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 2048 && ((!scroll_partial && (b - t == vc->vc_rows)) 2049 || (scroll_partial 2050 && (b - t - count > 2051 3 * vc->vc_rows >> 2)))) { 2052 if (vc->vc_rows - b > 0) 2053 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 2054 b - count); 2055 ypan_down_redraw(vc, t, count); 2056 if (t > 0) 2057 fbcon_redraw_move(vc, p, count, t, 0); 2058 } else 2059 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 2060 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2061 break; 2062 2063 case SCROLL_REDRAW: 2064 redraw_down: 2065 fbcon_redraw(vc, p, b - 1, b - t - count, 2066 -count * vc->vc_cols); 2067 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2068 scr_memsetw((unsigned short *) (vc->vc_origin + 2069 vc->vc_size_row * 2070 t), 2071 vc->vc_video_erase_char, 2072 vc->vc_size_row * count); 2073 return true; 2074 } 2075 } 2076 return false; 2077 } 2078 2079 2080 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 2081 int height, int width) 2082 { 2083 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2084 struct fbcon_display *p = &fb_display[vc->vc_num]; 2085 2086 if (fbcon_is_inactive(vc, info)) 2087 return; 2088 2089 if (!width || !height) 2090 return; 2091 2092 /* Split blits that cross physical y_wrap case. 2093 * Pathological case involves 4 blits, better to use recursive 2094 * code rather than unrolled case 2095 * 2096 * Recursive invocations don't need to erase the cursor over and 2097 * over again, so we use fbcon_bmove_rec() 2098 */ 2099 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 2100 p->vrows - p->yscroll); 2101 } 2102 2103 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, 2104 int dy, int dx, int height, int width, u_int y_break) 2105 { 2106 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2107 struct fbcon_ops *ops = info->fbcon_par; 2108 u_int b; 2109 2110 if (sy < y_break && sy + height > y_break) { 2111 b = y_break - sy; 2112 if (dy < sy) { /* Avoid trashing self */ 2113 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2114 y_break); 2115 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2116 height - b, width, y_break); 2117 } else { 2118 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2119 height - b, width, y_break); 2120 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2121 y_break); 2122 } 2123 return; 2124 } 2125 2126 if (dy < y_break && dy + height > y_break) { 2127 b = y_break - dy; 2128 if (dy < sy) { /* Avoid trashing self */ 2129 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2130 y_break); 2131 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2132 height - b, width, y_break); 2133 } else { 2134 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2135 height - b, width, y_break); 2136 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2137 y_break); 2138 } 2139 return; 2140 } 2141 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 2142 height, width); 2143 } 2144 2145 static void updatescrollmode(struct fbcon_display *p, 2146 struct fb_info *info, 2147 struct vc_data *vc) 2148 { 2149 struct fbcon_ops *ops = info->fbcon_par; 2150 int fh = vc->vc_font.height; 2151 int cap = info->flags; 2152 u16 t = 0; 2153 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 2154 info->fix.xpanstep); 2155 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 2156 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2157 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 2158 info->var.xres_virtual); 2159 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 2160 divides(ypan, vc->vc_font.height) && vyres > yres; 2161 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 2162 divides(ywrap, vc->vc_font.height) && 2163 divides(vc->vc_font.height, vyres) && 2164 divides(vc->vc_font.height, yres); 2165 int reading_fast = cap & FBINFO_READS_FAST; 2166 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 2167 !(cap & FBINFO_HWACCEL_DISABLED); 2168 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 2169 !(cap & FBINFO_HWACCEL_DISABLED); 2170 2171 p->vrows = vyres/fh; 2172 if (yres > (fh * (vc->vc_rows + 1))) 2173 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 2174 if ((yres % fh) && (vyres % fh < yres % fh)) 2175 p->vrows--; 2176 2177 if (good_wrap || good_pan) { 2178 if (reading_fast || fast_copyarea) 2179 p->scrollmode = good_wrap ? 2180 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 2181 else 2182 p->scrollmode = good_wrap ? SCROLL_REDRAW : 2183 SCROLL_PAN_REDRAW; 2184 } else { 2185 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2186 p->scrollmode = SCROLL_MOVE; 2187 else 2188 p->scrollmode = SCROLL_REDRAW; 2189 } 2190 } 2191 2192 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2193 unsigned int height, unsigned int user) 2194 { 2195 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2196 struct fbcon_ops *ops = info->fbcon_par; 2197 struct fbcon_display *p = &fb_display[vc->vc_num]; 2198 struct fb_var_screeninfo var = info->var; 2199 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2200 2201 virt_w = FBCON_SWAP(ops->rotate, width, height); 2202 virt_h = FBCON_SWAP(ops->rotate, height, width); 2203 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2204 vc->vc_font.height); 2205 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2206 vc->vc_font.width); 2207 var.xres = virt_w * virt_fw; 2208 var.yres = virt_h * virt_fh; 2209 x_diff = info->var.xres - var.xres; 2210 y_diff = info->var.yres - var.yres; 2211 if (x_diff < 0 || x_diff > virt_fw || 2212 y_diff < 0 || y_diff > virt_fh) { 2213 const struct fb_videomode *mode; 2214 2215 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2216 mode = fb_find_best_mode(&var, &info->modelist); 2217 if (mode == NULL) 2218 return -EINVAL; 2219 display_to_var(&var, p); 2220 fb_videomode_to_var(&var, mode); 2221 2222 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2223 return -EINVAL; 2224 2225 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2226 if (con_is_visible(vc)) { 2227 var.activate = FB_ACTIVATE_NOW | 2228 FB_ACTIVATE_FORCE; 2229 fb_set_var(info, &var); 2230 } 2231 var_to_display(p, &info->var, info); 2232 ops->var = info->var; 2233 } 2234 updatescrollmode(p, info, vc); 2235 return 0; 2236 } 2237 2238 static int fbcon_switch(struct vc_data *vc) 2239 { 2240 struct fb_info *info, *old_info = NULL; 2241 struct fbcon_ops *ops; 2242 struct fbcon_display *p = &fb_display[vc->vc_num]; 2243 struct fb_var_screeninfo var; 2244 int i, ret, prev_console, charcnt = 256; 2245 2246 info = registered_fb[con2fb_map[vc->vc_num]]; 2247 ops = info->fbcon_par; 2248 2249 if (softback_top) { 2250 if (softback_lines) 2251 fbcon_set_origin(vc); 2252 softback_top = softback_curr = softback_in = softback_buf; 2253 softback_lines = 0; 2254 fbcon_update_softback(vc); 2255 } 2256 2257 if (logo_shown >= 0) { 2258 struct vc_data *conp2 = vc_cons[logo_shown].d; 2259 2260 if (conp2->vc_top == logo_lines 2261 && conp2->vc_bottom == conp2->vc_rows) 2262 conp2->vc_top = 0; 2263 logo_shown = FBCON_LOGO_CANSHOW; 2264 } 2265 2266 prev_console = ops->currcon; 2267 if (prev_console != -1) 2268 old_info = registered_fb[con2fb_map[prev_console]]; 2269 /* 2270 * FIXME: If we have multiple fbdev's loaded, we need to 2271 * update all info->currcon. Perhaps, we can place this 2272 * in a centralized structure, but this might break some 2273 * drivers. 2274 * 2275 * info->currcon = vc->vc_num; 2276 */ 2277 for_each_registered_fb(i) { 2278 if (registered_fb[i]->fbcon_par) { 2279 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2280 2281 o->currcon = vc->vc_num; 2282 } 2283 } 2284 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2285 display_to_var(&var, p); 2286 var.activate = FB_ACTIVATE_NOW; 2287 2288 /* 2289 * make sure we don't unnecessarily trip the memcmp() 2290 * in fb_set_var() 2291 */ 2292 info->var.activate = var.activate; 2293 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2294 fb_set_var(info, &var); 2295 ops->var = info->var; 2296 2297 if (old_info != NULL && (old_info != info || 2298 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2299 if (info->fbops->fb_set_par) { 2300 ret = info->fbops->fb_set_par(info); 2301 2302 if (ret) 2303 printk(KERN_ERR "fbcon_switch: detected " 2304 "unhandled fb_set_par error, " 2305 "error code %d\n", ret); 2306 } 2307 2308 if (old_info != info) 2309 fbcon_del_cursor_timer(old_info); 2310 } 2311 2312 if (fbcon_is_inactive(vc, info) || 2313 ops->blank_state != FB_BLANK_UNBLANK) 2314 fbcon_del_cursor_timer(info); 2315 else 2316 fbcon_add_cursor_timer(info); 2317 2318 set_blitting_type(vc, info); 2319 ops->cursor_reset = 1; 2320 2321 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2322 ops->rotate = FB_ROTATE_UR; 2323 set_blitting_type(vc, info); 2324 } 2325 2326 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2327 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2328 2329 if (p->userfont) 2330 charcnt = FNTCHARCNT(vc->vc_font.data); 2331 2332 if (charcnt > 256) 2333 vc->vc_complement_mask <<= 1; 2334 2335 updatescrollmode(p, info, vc); 2336 2337 switch (p->scrollmode) { 2338 case SCROLL_WRAP_MOVE: 2339 scrollback_phys_max = p->vrows - vc->vc_rows; 2340 break; 2341 case SCROLL_PAN_MOVE: 2342 case SCROLL_PAN_REDRAW: 2343 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2344 if (scrollback_phys_max < 0) 2345 scrollback_phys_max = 0; 2346 break; 2347 default: 2348 scrollback_phys_max = 0; 2349 break; 2350 } 2351 2352 scrollback_max = 0; 2353 scrollback_current = 0; 2354 2355 if (!fbcon_is_inactive(vc, info)) { 2356 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2357 ops->update_start(info); 2358 } 2359 2360 fbcon_set_palette(vc, color_table); 2361 fbcon_clear_margins(vc, 0); 2362 2363 if (logo_shown == FBCON_LOGO_DRAW) { 2364 2365 logo_shown = fg_console; 2366 /* This is protected above by initmem_freed */ 2367 fb_show_logo(info, ops->rotate); 2368 update_region(vc, 2369 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2370 vc->vc_size_row * (vc->vc_bottom - 2371 vc->vc_top) / 2); 2372 return 0; 2373 } 2374 return 1; 2375 } 2376 2377 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2378 int blank) 2379 { 2380 if (blank) { 2381 unsigned short charmask = vc->vc_hi_font_mask ? 2382 0x1ff : 0xff; 2383 unsigned short oldc; 2384 2385 oldc = vc->vc_video_erase_char; 2386 vc->vc_video_erase_char &= charmask; 2387 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2388 vc->vc_video_erase_char = oldc; 2389 } 2390 } 2391 2392 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2393 { 2394 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2395 struct fbcon_ops *ops = info->fbcon_par; 2396 2397 if (mode_switch) { 2398 struct fb_var_screeninfo var = info->var; 2399 2400 ops->graphics = 1; 2401 2402 if (!blank) { 2403 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; 2404 fb_set_var(info, &var); 2405 ops->graphics = 0; 2406 ops->var = info->var; 2407 } 2408 } 2409 2410 if (!fbcon_is_inactive(vc, info)) { 2411 if (ops->blank_state != blank) { 2412 ops->blank_state = blank; 2413 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2414 ops->cursor_flash = (!blank); 2415 2416 if (fb_blank(info, blank)) 2417 fbcon_generic_blank(vc, info, blank); 2418 } 2419 2420 if (!blank) 2421 update_screen(vc); 2422 } 2423 2424 if (mode_switch || fbcon_is_inactive(vc, info) || 2425 ops->blank_state != FB_BLANK_UNBLANK) 2426 fbcon_del_cursor_timer(info); 2427 else 2428 fbcon_add_cursor_timer(info); 2429 2430 return 0; 2431 } 2432 2433 static int fbcon_debug_enter(struct vc_data *vc) 2434 { 2435 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2436 struct fbcon_ops *ops = info->fbcon_par; 2437 2438 ops->save_graphics = ops->graphics; 2439 ops->graphics = 0; 2440 if (info->fbops->fb_debug_enter) 2441 info->fbops->fb_debug_enter(info); 2442 fbcon_set_palette(vc, color_table); 2443 return 0; 2444 } 2445 2446 static int fbcon_debug_leave(struct vc_data *vc) 2447 { 2448 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2449 struct fbcon_ops *ops = info->fbcon_par; 2450 2451 ops->graphics = ops->save_graphics; 2452 if (info->fbops->fb_debug_leave) 2453 info->fbops->fb_debug_leave(info); 2454 return 0; 2455 } 2456 2457 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2458 { 2459 u8 *fontdata = vc->vc_font.data; 2460 u8 *data = font->data; 2461 int i, j; 2462 2463 font->width = vc->vc_font.width; 2464 font->height = vc->vc_font.height; 2465 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2466 if (!font->data) 2467 return 0; 2468 2469 if (font->width <= 8) { 2470 j = vc->vc_font.height; 2471 for (i = 0; i < font->charcount; i++) { 2472 memcpy(data, fontdata, j); 2473 memset(data + j, 0, 32 - j); 2474 data += 32; 2475 fontdata += j; 2476 } 2477 } else if (font->width <= 16) { 2478 j = vc->vc_font.height * 2; 2479 for (i = 0; i < font->charcount; i++) { 2480 memcpy(data, fontdata, j); 2481 memset(data + j, 0, 64 - j); 2482 data += 64; 2483 fontdata += j; 2484 } 2485 } else if (font->width <= 24) { 2486 for (i = 0; i < font->charcount; i++) { 2487 for (j = 0; j < vc->vc_font.height; j++) { 2488 *data++ = fontdata[0]; 2489 *data++ = fontdata[1]; 2490 *data++ = fontdata[2]; 2491 fontdata += sizeof(u32); 2492 } 2493 memset(data, 0, 3 * (32 - j)); 2494 data += 3 * (32 - j); 2495 } 2496 } else { 2497 j = vc->vc_font.height * 4; 2498 for (i = 0; i < font->charcount; i++) { 2499 memcpy(data, fontdata, j); 2500 memset(data + j, 0, 128 - j); 2501 data += 128; 2502 fontdata += j; 2503 } 2504 } 2505 return 0; 2506 } 2507 2508 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2509 static void set_vc_hi_font(struct vc_data *vc, bool set) 2510 { 2511 if (!set) { 2512 vc->vc_hi_font_mask = 0; 2513 if (vc->vc_can_do_color) { 2514 vc->vc_complement_mask >>= 1; 2515 vc->vc_s_complement_mask >>= 1; 2516 } 2517 2518 /* ++Edmund: reorder the attribute bits */ 2519 if (vc->vc_can_do_color) { 2520 unsigned short *cp = 2521 (unsigned short *) vc->vc_origin; 2522 int count = vc->vc_screenbuf_size / 2; 2523 unsigned short c; 2524 for (; count > 0; count--, cp++) { 2525 c = scr_readw(cp); 2526 scr_writew(((c & 0xfe00) >> 1) | 2527 (c & 0xff), cp); 2528 } 2529 c = vc->vc_video_erase_char; 2530 vc->vc_video_erase_char = 2531 ((c & 0xfe00) >> 1) | (c & 0xff); 2532 vc->vc_attr >>= 1; 2533 } 2534 } else { 2535 vc->vc_hi_font_mask = 0x100; 2536 if (vc->vc_can_do_color) { 2537 vc->vc_complement_mask <<= 1; 2538 vc->vc_s_complement_mask <<= 1; 2539 } 2540 2541 /* ++Edmund: reorder the attribute bits */ 2542 { 2543 unsigned short *cp = 2544 (unsigned short *) vc->vc_origin; 2545 int count = vc->vc_screenbuf_size / 2; 2546 unsigned short c; 2547 for (; count > 0; count--, cp++) { 2548 unsigned short newc; 2549 c = scr_readw(cp); 2550 if (vc->vc_can_do_color) 2551 newc = 2552 ((c & 0xff00) << 1) | (c & 2553 0xff); 2554 else 2555 newc = c & ~0x100; 2556 scr_writew(newc, cp); 2557 } 2558 c = vc->vc_video_erase_char; 2559 if (vc->vc_can_do_color) { 2560 vc->vc_video_erase_char = 2561 ((c & 0xff00) << 1) | (c & 0xff); 2562 vc->vc_attr <<= 1; 2563 } else 2564 vc->vc_video_erase_char = c & ~0x100; 2565 } 2566 } 2567 } 2568 2569 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2570 const u8 * data, int userfont) 2571 { 2572 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2573 struct fbcon_ops *ops = info->fbcon_par; 2574 struct fbcon_display *p = &fb_display[vc->vc_num]; 2575 int resize; 2576 int cnt; 2577 char *old_data = NULL; 2578 2579 if (con_is_visible(vc) && softback_lines) 2580 fbcon_set_origin(vc); 2581 2582 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2583 if (p->userfont) 2584 old_data = vc->vc_font.data; 2585 if (userfont) 2586 cnt = FNTCHARCNT(data); 2587 else 2588 cnt = 256; 2589 vc->vc_font.data = (void *)(p->fontdata = data); 2590 if ((p->userfont = userfont)) 2591 REFCOUNT(data)++; 2592 vc->vc_font.width = w; 2593 vc->vc_font.height = h; 2594 if (vc->vc_hi_font_mask && cnt == 256) 2595 set_vc_hi_font(vc, false); 2596 else if (!vc->vc_hi_font_mask && cnt == 512) 2597 set_vc_hi_font(vc, true); 2598 2599 if (resize) { 2600 int cols, rows; 2601 2602 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2603 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2604 cols /= w; 2605 rows /= h; 2606 vc_resize(vc, cols, rows); 2607 if (con_is_visible(vc) && softback_buf) 2608 fbcon_update_softback(vc); 2609 } else if (con_is_visible(vc) 2610 && vc->vc_mode == KD_TEXT) { 2611 fbcon_clear_margins(vc, 0); 2612 update_screen(vc); 2613 } 2614 2615 if (old_data && (--REFCOUNT(old_data) == 0)) 2616 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2617 return 0; 2618 } 2619 2620 static int fbcon_copy_font(struct vc_data *vc, int con) 2621 { 2622 struct fbcon_display *od = &fb_display[con]; 2623 struct console_font *f = &vc->vc_font; 2624 2625 if (od->fontdata == f->data) 2626 return 0; /* already the same font... */ 2627 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2628 } 2629 2630 /* 2631 * User asked to set font; we are guaranteed that 2632 * a) width and height are in range 1..32 2633 * b) charcount does not exceed 512 2634 * but lets not assume that, since someone might someday want to use larger 2635 * fonts. And charcount of 512 is small for unicode support. 2636 * 2637 * However, user space gives the font in 32 rows , regardless of 2638 * actual font height. So a new API is needed if support for larger fonts 2639 * is ever implemented. 2640 */ 2641 2642 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, 2643 unsigned int flags) 2644 { 2645 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2646 unsigned charcount = font->charcount; 2647 int w = font->width; 2648 int h = font->height; 2649 int size; 2650 int i, csum; 2651 u8 *new_data, *data = font->data; 2652 int pitch = (font->width+7) >> 3; 2653 2654 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2655 * If not this check should be changed to charcount < 256 */ 2656 if (charcount != 256 && charcount != 512) 2657 return -EINVAL; 2658 2659 /* Make sure drawing engine can handle the font */ 2660 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2661 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2662 return -EINVAL; 2663 2664 /* Make sure driver can handle the font length */ 2665 if (fbcon_invalid_charcount(info, charcount)) 2666 return -EINVAL; 2667 2668 size = h * pitch * charcount; 2669 2670 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2671 2672 if (!new_data) 2673 return -ENOMEM; 2674 2675 new_data += FONT_EXTRA_WORDS * sizeof(int); 2676 FNTSIZE(new_data) = size; 2677 FNTCHARCNT(new_data) = charcount; 2678 REFCOUNT(new_data) = 0; /* usage counter */ 2679 for (i=0; i< charcount; i++) { 2680 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2681 } 2682 2683 /* Since linux has a nice crc32 function use it for counting font 2684 * checksums. */ 2685 csum = crc32(0, new_data, size); 2686 2687 FNTSUM(new_data) = csum; 2688 /* Check if the same font is on some other console already */ 2689 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2690 struct vc_data *tmp = vc_cons[i].d; 2691 2692 if (fb_display[i].userfont && 2693 fb_display[i].fontdata && 2694 FNTSUM(fb_display[i].fontdata) == csum && 2695 FNTSIZE(fb_display[i].fontdata) == size && 2696 tmp->vc_font.width == w && 2697 !memcmp(fb_display[i].fontdata, new_data, size)) { 2698 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2699 new_data = (u8 *)fb_display[i].fontdata; 2700 break; 2701 } 2702 } 2703 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2704 } 2705 2706 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2707 { 2708 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2709 const struct font_desc *f; 2710 2711 if (!name) 2712 f = get_default_font(info->var.xres, info->var.yres, 2713 info->pixmap.blit_x, info->pixmap.blit_y); 2714 else if (!(f = find_font(name))) 2715 return -ENOENT; 2716 2717 font->width = f->width; 2718 font->height = f->height; 2719 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2720 } 2721 2722 static u16 palette_red[16]; 2723 static u16 palette_green[16]; 2724 static u16 palette_blue[16]; 2725 2726 static struct fb_cmap palette_cmap = { 2727 0, 16, palette_red, palette_green, palette_blue, NULL 2728 }; 2729 2730 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2731 { 2732 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2733 int i, j, k, depth; 2734 u8 val; 2735 2736 if (fbcon_is_inactive(vc, info)) 2737 return; 2738 2739 if (!con_is_visible(vc)) 2740 return; 2741 2742 depth = fb_get_color_depth(&info->var, &info->fix); 2743 if (depth > 3) { 2744 for (i = j = 0; i < 16; i++) { 2745 k = table[i]; 2746 val = vc->vc_palette[j++]; 2747 palette_red[k] = (val << 8) | val; 2748 val = vc->vc_palette[j++]; 2749 palette_green[k] = (val << 8) | val; 2750 val = vc->vc_palette[j++]; 2751 palette_blue[k] = (val << 8) | val; 2752 } 2753 palette_cmap.len = 16; 2754 palette_cmap.start = 0; 2755 /* 2756 * If framebuffer is capable of less than 16 colors, 2757 * use default palette of fbcon. 2758 */ 2759 } else 2760 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2761 2762 fb_set_cmap(&palette_cmap, info); 2763 } 2764 2765 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) 2766 { 2767 unsigned long p; 2768 int line; 2769 2770 if (vc->vc_num != fg_console || !softback_lines) 2771 return (u16 *) (vc->vc_origin + offset); 2772 line = offset / vc->vc_size_row; 2773 if (line >= softback_lines) 2774 return (u16 *) (vc->vc_origin + offset - 2775 softback_lines * vc->vc_size_row); 2776 p = softback_curr + offset; 2777 if (p >= softback_end) 2778 p += softback_buf - softback_end; 2779 return (u16 *) p; 2780 } 2781 2782 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2783 int *px, int *py) 2784 { 2785 unsigned long ret; 2786 int x, y; 2787 2788 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2789 unsigned long offset = (pos - vc->vc_origin) / 2; 2790 2791 x = offset % vc->vc_cols; 2792 y = offset / vc->vc_cols; 2793 if (vc->vc_num == fg_console) 2794 y += softback_lines; 2795 ret = pos + (vc->vc_cols - x) * 2; 2796 } else if (vc->vc_num == fg_console && softback_lines) { 2797 unsigned long offset = pos - softback_curr; 2798 2799 if (pos < softback_curr) 2800 offset += softback_end - softback_buf; 2801 offset /= 2; 2802 x = offset % vc->vc_cols; 2803 y = offset / vc->vc_cols; 2804 ret = pos + (vc->vc_cols - x) * 2; 2805 if (ret == softback_end) 2806 ret = softback_buf; 2807 if (ret == softback_in) 2808 ret = vc->vc_origin; 2809 } else { 2810 /* Should not happen */ 2811 x = y = 0; 2812 ret = vc->vc_origin; 2813 } 2814 if (px) 2815 *px = x; 2816 if (py) 2817 *py = y; 2818 return ret; 2819 } 2820 2821 /* As we might be inside of softback, we may work with non-contiguous buffer, 2822 that's why we have to use a separate routine. */ 2823 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2824 { 2825 while (cnt--) { 2826 u16 a = scr_readw(p); 2827 if (!vc->vc_can_do_color) 2828 a ^= 0x0800; 2829 else if (vc->vc_hi_font_mask == 0x100) 2830 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2831 (((a) & 0x0e00) << 4); 2832 else 2833 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2834 (((a) & 0x0700) << 4); 2835 scr_writew(a, p++); 2836 if (p == (u16 *) softback_end) 2837 p = (u16 *) softback_buf; 2838 if (p == (u16 *) softback_in) 2839 p = (u16 *) vc->vc_origin; 2840 } 2841 } 2842 2843 static void fbcon_scrolldelta(struct vc_data *vc, int lines) 2844 { 2845 struct fb_info *info = registered_fb[con2fb_map[fg_console]]; 2846 struct fbcon_ops *ops = info->fbcon_par; 2847 struct fbcon_display *disp = &fb_display[fg_console]; 2848 int offset, limit, scrollback_old; 2849 2850 if (softback_top) { 2851 if (vc->vc_num != fg_console) 2852 return; 2853 if (vc->vc_mode != KD_TEXT || !lines) 2854 return; 2855 if (logo_shown >= 0) { 2856 struct vc_data *conp2 = vc_cons[logo_shown].d; 2857 2858 if (conp2->vc_top == logo_lines 2859 && conp2->vc_bottom == conp2->vc_rows) 2860 conp2->vc_top = 0; 2861 if (logo_shown == vc->vc_num) { 2862 unsigned long p, q; 2863 int i; 2864 2865 p = softback_in; 2866 q = vc->vc_origin + 2867 logo_lines * vc->vc_size_row; 2868 for (i = 0; i < logo_lines; i++) { 2869 if (p == softback_top) 2870 break; 2871 if (p == softback_buf) 2872 p = softback_end; 2873 p -= vc->vc_size_row; 2874 q -= vc->vc_size_row; 2875 scr_memcpyw((u16 *) q, (u16 *) p, 2876 vc->vc_size_row); 2877 } 2878 softback_in = softback_curr = p; 2879 update_region(vc, vc->vc_origin, 2880 logo_lines * vc->vc_cols); 2881 } 2882 logo_shown = FBCON_LOGO_CANSHOW; 2883 } 2884 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); 2885 fbcon_redraw_softback(vc, disp, lines); 2886 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); 2887 return; 2888 } 2889 2890 if (!scrollback_phys_max) 2891 return; 2892 2893 scrollback_old = scrollback_current; 2894 scrollback_current -= lines; 2895 if (scrollback_current < 0) 2896 scrollback_current = 0; 2897 else if (scrollback_current > scrollback_max) 2898 scrollback_current = scrollback_max; 2899 if (scrollback_current == scrollback_old) 2900 return; 2901 2902 if (fbcon_is_inactive(vc, info)) 2903 return; 2904 2905 fbcon_cursor(vc, CM_ERASE); 2906 2907 offset = disp->yscroll - scrollback_current; 2908 limit = disp->vrows; 2909 switch (disp->scrollmode) { 2910 case SCROLL_WRAP_MOVE: 2911 info->var.vmode |= FB_VMODE_YWRAP; 2912 break; 2913 case SCROLL_PAN_MOVE: 2914 case SCROLL_PAN_REDRAW: 2915 limit -= vc->vc_rows; 2916 info->var.vmode &= ~FB_VMODE_YWRAP; 2917 break; 2918 } 2919 if (offset < 0) 2920 offset += limit; 2921 else if (offset >= limit) 2922 offset -= limit; 2923 2924 ops->var.xoffset = 0; 2925 ops->var.yoffset = offset * vc->vc_font.height; 2926 ops->update_start(info); 2927 2928 if (!scrollback_current) 2929 fbcon_cursor(vc, CM_DRAW); 2930 } 2931 2932 static int fbcon_set_origin(struct vc_data *vc) 2933 { 2934 if (softback_lines) 2935 fbcon_scrolldelta(vc, softback_lines); 2936 return 0; 2937 } 2938 2939 void fbcon_suspended(struct fb_info *info) 2940 { 2941 struct vc_data *vc = NULL; 2942 struct fbcon_ops *ops = info->fbcon_par; 2943 2944 if (!ops || ops->currcon < 0) 2945 return; 2946 vc = vc_cons[ops->currcon].d; 2947 2948 /* Clear cursor, restore saved data */ 2949 fbcon_cursor(vc, CM_ERASE); 2950 } 2951 2952 void fbcon_resumed(struct fb_info *info) 2953 { 2954 struct vc_data *vc; 2955 struct fbcon_ops *ops = info->fbcon_par; 2956 2957 if (!ops || ops->currcon < 0) 2958 return; 2959 vc = vc_cons[ops->currcon].d; 2960 2961 update_screen(vc); 2962 } 2963 2964 static void fbcon_modechanged(struct fb_info *info) 2965 { 2966 struct fbcon_ops *ops = info->fbcon_par; 2967 struct vc_data *vc; 2968 struct fbcon_display *p; 2969 int rows, cols; 2970 2971 if (!ops || ops->currcon < 0) 2972 return; 2973 vc = vc_cons[ops->currcon].d; 2974 if (vc->vc_mode != KD_TEXT || 2975 registered_fb[con2fb_map[ops->currcon]] != info) 2976 return; 2977 2978 p = &fb_display[vc->vc_num]; 2979 set_blitting_type(vc, info); 2980 2981 if (con_is_visible(vc)) { 2982 var_to_display(p, &info->var, info); 2983 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2984 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2985 cols /= vc->vc_font.width; 2986 rows /= vc->vc_font.height; 2987 vc_resize(vc, cols, rows); 2988 updatescrollmode(p, info, vc); 2989 scrollback_max = 0; 2990 scrollback_current = 0; 2991 2992 if (!fbcon_is_inactive(vc, info)) { 2993 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2994 ops->update_start(info); 2995 } 2996 2997 fbcon_set_palette(vc, color_table); 2998 update_screen(vc); 2999 if (softback_buf) 3000 fbcon_update_softback(vc); 3001 } 3002 } 3003 3004 static void fbcon_set_all_vcs(struct fb_info *info) 3005 { 3006 struct fbcon_ops *ops = info->fbcon_par; 3007 struct vc_data *vc; 3008 struct fbcon_display *p; 3009 int i, rows, cols, fg = -1; 3010 3011 if (!ops || ops->currcon < 0) 3012 return; 3013 3014 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3015 vc = vc_cons[i].d; 3016 if (!vc || vc->vc_mode != KD_TEXT || 3017 registered_fb[con2fb_map[i]] != info) 3018 continue; 3019 3020 if (con_is_visible(vc)) { 3021 fg = i; 3022 continue; 3023 } 3024 3025 p = &fb_display[vc->vc_num]; 3026 set_blitting_type(vc, info); 3027 var_to_display(p, &info->var, info); 3028 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 3029 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 3030 cols /= vc->vc_font.width; 3031 rows /= vc->vc_font.height; 3032 vc_resize(vc, cols, rows); 3033 } 3034 3035 if (fg != -1) 3036 fbcon_modechanged(info); 3037 } 3038 3039 3040 void fbcon_update_vcs(struct fb_info *info, bool all) 3041 { 3042 if (all) 3043 fbcon_set_all_vcs(info); 3044 else 3045 fbcon_modechanged(info); 3046 } 3047 EXPORT_SYMBOL(fbcon_update_vcs); 3048 3049 int fbcon_mode_deleted(struct fb_info *info, 3050 struct fb_videomode *mode) 3051 { 3052 struct fb_info *fb_info; 3053 struct fbcon_display *p; 3054 int i, j, found = 0; 3055 3056 /* before deletion, ensure that mode is not in use */ 3057 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3058 j = con2fb_map[i]; 3059 if (j == -1) 3060 continue; 3061 fb_info = registered_fb[j]; 3062 if (fb_info != info) 3063 continue; 3064 p = &fb_display[i]; 3065 if (!p || !p->mode) 3066 continue; 3067 if (fb_mode_is_equal(p->mode, mode)) { 3068 found = 1; 3069 break; 3070 } 3071 } 3072 return found; 3073 } 3074 3075 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 3076 static void fbcon_unbind(void) 3077 { 3078 int ret; 3079 3080 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 3081 fbcon_is_default); 3082 3083 if (!ret) 3084 fbcon_has_console_bind = 0; 3085 } 3086 #else 3087 static inline void fbcon_unbind(void) {} 3088 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 3089 3090 /* called with console_lock held */ 3091 void fbcon_fb_unbind(struct fb_info *info) 3092 { 3093 int i, new_idx = -1, ret = 0; 3094 int idx = info->node; 3095 3096 WARN_CONSOLE_UNLOCKED(); 3097 3098 if (!fbcon_has_console_bind) 3099 return; 3100 3101 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3102 if (con2fb_map[i] != idx && 3103 con2fb_map[i] != -1) { 3104 new_idx = con2fb_map[i]; 3105 break; 3106 } 3107 } 3108 3109 if (new_idx != -1) { 3110 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3111 if (con2fb_map[i] == idx) 3112 set_con2fb_map(i, new_idx, 0); 3113 } 3114 } else { 3115 struct fb_info *info = registered_fb[idx]; 3116 3117 /* This is sort of like set_con2fb_map, except it maps 3118 * the consoles to no device and then releases the 3119 * oldinfo to free memory and cancel the cursor blink 3120 * timer. I can imagine this just becoming part of 3121 * set_con2fb_map where new_idx is -1 3122 */ 3123 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3124 if (con2fb_map[i] == idx) { 3125 con2fb_map[i] = -1; 3126 if (!search_fb_in_map(idx)) { 3127 ret = con2fb_release_oldinfo(vc_cons[i].d, 3128 info, NULL, i, 3129 idx, 0); 3130 if (ret) { 3131 con2fb_map[i] = idx; 3132 return; 3133 } 3134 } 3135 } 3136 } 3137 fbcon_unbind(); 3138 } 3139 } 3140 3141 /* called with console_lock held */ 3142 void fbcon_fb_unregistered(struct fb_info *info) 3143 { 3144 int i, idx; 3145 3146 WARN_CONSOLE_UNLOCKED(); 3147 3148 if (deferred_takeover) 3149 return; 3150 3151 idx = info->node; 3152 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3153 if (con2fb_map[i] == idx) 3154 con2fb_map[i] = -1; 3155 } 3156 3157 if (idx == info_idx) { 3158 info_idx = -1; 3159 3160 for_each_registered_fb(i) { 3161 info_idx = i; 3162 break; 3163 } 3164 } 3165 3166 if (info_idx != -1) { 3167 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3168 if (con2fb_map[i] == -1) 3169 con2fb_map[i] = info_idx; 3170 } 3171 } 3172 3173 if (primary_device == idx) 3174 primary_device = -1; 3175 3176 if (!num_registered_fb) 3177 do_unregister_con_driver(&fb_con); 3178 } 3179 3180 void fbcon_remap_all(struct fb_info *info) 3181 { 3182 int i, idx = info->node; 3183 3184 console_lock(); 3185 if (deferred_takeover) { 3186 for (i = first_fb_vc; i <= last_fb_vc; i++) 3187 con2fb_map_boot[i] = idx; 3188 fbcon_map_override(); 3189 console_unlock(); 3190 return; 3191 } 3192 3193 for (i = first_fb_vc; i <= last_fb_vc; i++) 3194 set_con2fb_map(i, idx, 0); 3195 3196 if (con_is_bound(&fb_con)) { 3197 printk(KERN_INFO "fbcon: Remapping primary device, " 3198 "fb%i, to tty %i-%i\n", idx, 3199 first_fb_vc + 1, last_fb_vc + 1); 3200 info_idx = idx; 3201 } 3202 console_unlock(); 3203 } 3204 3205 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 3206 static void fbcon_select_primary(struct fb_info *info) 3207 { 3208 if (!map_override && primary_device == -1 && 3209 fb_is_primary_device(info)) { 3210 int i; 3211 3212 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 3213 info->fix.id, info->node); 3214 primary_device = info->node; 3215 3216 for (i = first_fb_vc; i <= last_fb_vc; i++) 3217 con2fb_map_boot[i] = primary_device; 3218 3219 if (con_is_bound(&fb_con)) { 3220 printk(KERN_INFO "fbcon: Remapping primary device, " 3221 "fb%i, to tty %i-%i\n", info->node, 3222 first_fb_vc + 1, last_fb_vc + 1); 3223 info_idx = primary_device; 3224 } 3225 } 3226 3227 } 3228 #else 3229 static inline void fbcon_select_primary(struct fb_info *info) 3230 { 3231 return; 3232 } 3233 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 3234 3235 /* called with console_lock held */ 3236 int fbcon_fb_registered(struct fb_info *info) 3237 { 3238 int ret = 0, i, idx; 3239 3240 WARN_CONSOLE_UNLOCKED(); 3241 3242 idx = info->node; 3243 fbcon_select_primary(info); 3244 3245 if (deferred_takeover) { 3246 pr_info("fbcon: Deferring console take-over\n"); 3247 return 0; 3248 } 3249 3250 if (info_idx == -1) { 3251 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3252 if (con2fb_map_boot[i] == idx) { 3253 info_idx = idx; 3254 break; 3255 } 3256 } 3257 3258 if (info_idx != -1) 3259 ret = do_fbcon_takeover(1); 3260 } else { 3261 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3262 if (con2fb_map_boot[i] == idx) 3263 set_con2fb_map(i, idx, 0); 3264 } 3265 } 3266 3267 return ret; 3268 } 3269 3270 void fbcon_fb_blanked(struct fb_info *info, int blank) 3271 { 3272 struct fbcon_ops *ops = info->fbcon_par; 3273 struct vc_data *vc; 3274 3275 if (!ops || ops->currcon < 0) 3276 return; 3277 3278 vc = vc_cons[ops->currcon].d; 3279 if (vc->vc_mode != KD_TEXT || 3280 registered_fb[con2fb_map[ops->currcon]] != info) 3281 return; 3282 3283 if (con_is_visible(vc)) { 3284 if (blank) 3285 do_blank_screen(0); 3286 else 3287 do_unblank_screen(0); 3288 } 3289 ops->blank_state = blank; 3290 } 3291 3292 void fbcon_new_modelist(struct fb_info *info) 3293 { 3294 int i; 3295 struct vc_data *vc; 3296 struct fb_var_screeninfo var; 3297 const struct fb_videomode *mode; 3298 3299 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3300 if (registered_fb[con2fb_map[i]] != info) 3301 continue; 3302 if (!fb_display[i].mode) 3303 continue; 3304 vc = vc_cons[i].d; 3305 display_to_var(&var, &fb_display[i]); 3306 mode = fb_find_nearest_mode(fb_display[i].mode, 3307 &info->modelist); 3308 fb_videomode_to_var(&var, mode); 3309 fbcon_set_disp(info, &var, vc->vc_num); 3310 } 3311 } 3312 3313 void fbcon_get_requirement(struct fb_info *info, 3314 struct fb_blit_caps *caps) 3315 { 3316 struct vc_data *vc; 3317 struct fbcon_display *p; 3318 3319 if (caps->flags) { 3320 int i, charcnt; 3321 3322 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3323 vc = vc_cons[i].d; 3324 if (vc && vc->vc_mode == KD_TEXT && 3325 info->node == con2fb_map[i]) { 3326 p = &fb_display[i]; 3327 caps->x |= 1 << (vc->vc_font.width - 1); 3328 caps->y |= 1 << (vc->vc_font.height - 1); 3329 charcnt = (p->userfont) ? 3330 FNTCHARCNT(p->fontdata) : 256; 3331 if (caps->len < charcnt) 3332 caps->len = charcnt; 3333 } 3334 } 3335 } else { 3336 vc = vc_cons[fg_console].d; 3337 3338 if (vc && vc->vc_mode == KD_TEXT && 3339 info->node == con2fb_map[fg_console]) { 3340 p = &fb_display[fg_console]; 3341 caps->x = 1 << (vc->vc_font.width - 1); 3342 caps->y = 1 << (vc->vc_font.height - 1); 3343 caps->len = (p->userfont) ? 3344 FNTCHARCNT(p->fontdata) : 256; 3345 } 3346 } 3347 } 3348 3349 int fbcon_set_con2fb_map_ioctl(void __user *argp) 3350 { 3351 struct fb_con2fbmap con2fb; 3352 int ret; 3353 3354 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3355 return -EFAULT; 3356 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3357 return -EINVAL; 3358 if (con2fb.framebuffer >= FB_MAX) 3359 return -EINVAL; 3360 if (!registered_fb[con2fb.framebuffer]) 3361 request_module("fb%d", con2fb.framebuffer); 3362 if (!registered_fb[con2fb.framebuffer]) { 3363 return -EINVAL; 3364 } 3365 3366 console_lock(); 3367 ret = set_con2fb_map(con2fb.console - 1, 3368 con2fb.framebuffer, 1); 3369 console_unlock(); 3370 3371 return ret; 3372 } 3373 3374 int fbcon_get_con2fb_map_ioctl(void __user *argp) 3375 { 3376 struct fb_con2fbmap con2fb; 3377 3378 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3379 return -EFAULT; 3380 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3381 return -EINVAL; 3382 3383 console_lock(); 3384 con2fb.framebuffer = con2fb_map[con2fb.console - 1]; 3385 console_unlock(); 3386 3387 return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; 3388 } 3389 3390 /* 3391 * The console `switch' structure for the frame buffer based console 3392 */ 3393 3394 static const struct consw fb_con = { 3395 .owner = THIS_MODULE, 3396 .con_startup = fbcon_startup, 3397 .con_init = fbcon_init, 3398 .con_deinit = fbcon_deinit, 3399 .con_clear = fbcon_clear, 3400 .con_putc = fbcon_putc, 3401 .con_putcs = fbcon_putcs, 3402 .con_cursor = fbcon_cursor, 3403 .con_scroll = fbcon_scroll, 3404 .con_switch = fbcon_switch, 3405 .con_blank = fbcon_blank, 3406 .con_font_set = fbcon_set_font, 3407 .con_font_get = fbcon_get_font, 3408 .con_font_default = fbcon_set_def_font, 3409 .con_font_copy = fbcon_copy_font, 3410 .con_set_palette = fbcon_set_palette, 3411 .con_scrolldelta = fbcon_scrolldelta, 3412 .con_set_origin = fbcon_set_origin, 3413 .con_invert_region = fbcon_invert_region, 3414 .con_screen_pos = fbcon_screen_pos, 3415 .con_getxy = fbcon_getxy, 3416 .con_resize = fbcon_resize, 3417 .con_debug_enter = fbcon_debug_enter, 3418 .con_debug_leave = fbcon_debug_leave, 3419 }; 3420 3421 static ssize_t store_rotate(struct device *device, 3422 struct device_attribute *attr, const char *buf, 3423 size_t count) 3424 { 3425 struct fb_info *info; 3426 int rotate, idx; 3427 char **last = NULL; 3428 3429 console_lock(); 3430 idx = con2fb_map[fg_console]; 3431 3432 if (idx == -1 || registered_fb[idx] == NULL) 3433 goto err; 3434 3435 info = registered_fb[idx]; 3436 rotate = simple_strtoul(buf, last, 0); 3437 fbcon_rotate(info, rotate); 3438 err: 3439 console_unlock(); 3440 return count; 3441 } 3442 3443 static ssize_t store_rotate_all(struct device *device, 3444 struct device_attribute *attr,const char *buf, 3445 size_t count) 3446 { 3447 struct fb_info *info; 3448 int rotate, idx; 3449 char **last = NULL; 3450 3451 console_lock(); 3452 idx = con2fb_map[fg_console]; 3453 3454 if (idx == -1 || registered_fb[idx] == NULL) 3455 goto err; 3456 3457 info = registered_fb[idx]; 3458 rotate = simple_strtoul(buf, last, 0); 3459 fbcon_rotate_all(info, rotate); 3460 err: 3461 console_unlock(); 3462 return count; 3463 } 3464 3465 static ssize_t show_rotate(struct device *device, 3466 struct device_attribute *attr,char *buf) 3467 { 3468 struct fb_info *info; 3469 int rotate = 0, idx; 3470 3471 console_lock(); 3472 idx = con2fb_map[fg_console]; 3473 3474 if (idx == -1 || registered_fb[idx] == NULL) 3475 goto err; 3476 3477 info = registered_fb[idx]; 3478 rotate = fbcon_get_rotate(info); 3479 err: 3480 console_unlock(); 3481 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3482 } 3483 3484 static ssize_t show_cursor_blink(struct device *device, 3485 struct device_attribute *attr, char *buf) 3486 { 3487 struct fb_info *info; 3488 struct fbcon_ops *ops; 3489 int idx, blink = -1; 3490 3491 console_lock(); 3492 idx = con2fb_map[fg_console]; 3493 3494 if (idx == -1 || registered_fb[idx] == NULL) 3495 goto err; 3496 3497 info = registered_fb[idx]; 3498 ops = info->fbcon_par; 3499 3500 if (!ops) 3501 goto err; 3502 3503 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3504 err: 3505 console_unlock(); 3506 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3507 } 3508 3509 static ssize_t store_cursor_blink(struct device *device, 3510 struct device_attribute *attr, 3511 const char *buf, size_t count) 3512 { 3513 struct fb_info *info; 3514 int blink, idx; 3515 char **last = NULL; 3516 3517 console_lock(); 3518 idx = con2fb_map[fg_console]; 3519 3520 if (idx == -1 || registered_fb[idx] == NULL) 3521 goto err; 3522 3523 info = registered_fb[idx]; 3524 3525 if (!info->fbcon_par) 3526 goto err; 3527 3528 blink = simple_strtoul(buf, last, 0); 3529 3530 if (blink) { 3531 fbcon_cursor_noblink = 0; 3532 fbcon_add_cursor_timer(info); 3533 } else { 3534 fbcon_cursor_noblink = 1; 3535 fbcon_del_cursor_timer(info); 3536 } 3537 3538 err: 3539 console_unlock(); 3540 return count; 3541 } 3542 3543 static struct device_attribute device_attrs[] = { 3544 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3545 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3546 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3547 store_cursor_blink), 3548 }; 3549 3550 static int fbcon_init_device(void) 3551 { 3552 int i, error = 0; 3553 3554 fbcon_has_sysfs = 1; 3555 3556 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3557 error = device_create_file(fbcon_device, &device_attrs[i]); 3558 3559 if (error) 3560 break; 3561 } 3562 3563 if (error) { 3564 while (--i >= 0) 3565 device_remove_file(fbcon_device, &device_attrs[i]); 3566 3567 fbcon_has_sysfs = 0; 3568 } 3569 3570 return 0; 3571 } 3572 3573 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3574 static void fbcon_register_existing_fbs(struct work_struct *work) 3575 { 3576 int i; 3577 3578 console_lock(); 3579 3580 for_each_registered_fb(i) 3581 fbcon_fb_registered(registered_fb[i]); 3582 3583 console_unlock(); 3584 } 3585 3586 static struct notifier_block fbcon_output_nb; 3587 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); 3588 3589 static int fbcon_output_notifier(struct notifier_block *nb, 3590 unsigned long action, void *data) 3591 { 3592 WARN_CONSOLE_UNLOCKED(); 3593 3594 pr_info("fbcon: Taking over console\n"); 3595 3596 dummycon_unregister_output_notifier(&fbcon_output_nb); 3597 deferred_takeover = false; 3598 logo_shown = FBCON_LOGO_DONTSHOW; 3599 3600 /* We may get called in atomic context */ 3601 schedule_work(&fbcon_deferred_takeover_work); 3602 3603 return NOTIFY_OK; 3604 } 3605 #endif 3606 3607 static void fbcon_start(void) 3608 { 3609 WARN_CONSOLE_UNLOCKED(); 3610 3611 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3612 if (conswitchp != &dummy_con) 3613 deferred_takeover = false; 3614 3615 if (deferred_takeover) { 3616 fbcon_output_nb.notifier_call = fbcon_output_notifier; 3617 dummycon_register_output_notifier(&fbcon_output_nb); 3618 return; 3619 } 3620 #endif 3621 3622 if (num_registered_fb) { 3623 int i; 3624 3625 for_each_registered_fb(i) { 3626 info_idx = i; 3627 break; 3628 } 3629 3630 do_fbcon_takeover(0); 3631 } 3632 } 3633 3634 static void fbcon_exit(void) 3635 { 3636 struct fb_info *info; 3637 int i, j, mapped; 3638 3639 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3640 if (deferred_takeover) { 3641 dummycon_unregister_output_notifier(&fbcon_output_nb); 3642 deferred_takeover = false; 3643 } 3644 #endif 3645 3646 kvfree((void *)softback_buf); 3647 softback_buf = 0UL; 3648 3649 for_each_registered_fb(i) { 3650 int pending = 0; 3651 3652 mapped = 0; 3653 info = registered_fb[i]; 3654 3655 if (info->queue.func) 3656 pending = cancel_work_sync(&info->queue); 3657 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3658 "no")); 3659 3660 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3661 if (con2fb_map[j] == i) { 3662 mapped = 1; 3663 con2fb_map[j] = -1; 3664 } 3665 } 3666 3667 if (mapped) { 3668 if (info->fbops->fb_release) 3669 info->fbops->fb_release(info, 0); 3670 module_put(info->fbops->owner); 3671 3672 if (info->fbcon_par) { 3673 struct fbcon_ops *ops = info->fbcon_par; 3674 3675 fbcon_del_cursor_timer(info); 3676 kfree(ops->cursor_src); 3677 kfree(ops->cursor_state.mask); 3678 kfree(info->fbcon_par); 3679 info->fbcon_par = NULL; 3680 } 3681 3682 if (info->queue.func == fb_flashcursor) 3683 info->queue.func = NULL; 3684 } 3685 } 3686 } 3687 3688 void __init fb_console_init(void) 3689 { 3690 int i; 3691 3692 console_lock(); 3693 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3694 "fbcon"); 3695 3696 if (IS_ERR(fbcon_device)) { 3697 printk(KERN_WARNING "Unable to create device " 3698 "for fbcon; errno = %ld\n", 3699 PTR_ERR(fbcon_device)); 3700 fbcon_device = NULL; 3701 } else 3702 fbcon_init_device(); 3703 3704 for (i = 0; i < MAX_NR_CONSOLES; i++) 3705 con2fb_map[i] = -1; 3706 3707 fbcon_start(); 3708 console_unlock(); 3709 } 3710 3711 #ifdef MODULE 3712 3713 static void __exit fbcon_deinit_device(void) 3714 { 3715 int i; 3716 3717 if (fbcon_has_sysfs) { 3718 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3719 device_remove_file(fbcon_device, &device_attrs[i]); 3720 3721 fbcon_has_sysfs = 0; 3722 } 3723 } 3724 3725 void __exit fb_console_exit(void) 3726 { 3727 console_lock(); 3728 fbcon_deinit_device(); 3729 device_destroy(fb_class, MKDEV(0, 0)); 3730 fbcon_exit(); 3731 do_unregister_con_driver(&fb_con); 3732 console_unlock(); 3733 } 3734 #endif 3735