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