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 <asm/fb.h> 80 #include <asm/irq.h> 81 82 #include "fbcon.h" 83 84 #ifdef FBCONDEBUG 85 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args) 86 #else 87 # define DPRINTK(fmt, args...) 88 #endif 89 90 enum { 91 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */ 92 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */ 93 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */ 94 }; 95 96 static struct display fb_display[MAX_NR_CONSOLES]; 97 98 static signed char con2fb_map[MAX_NR_CONSOLES]; 99 static signed char con2fb_map_boot[MAX_NR_CONSOLES]; 100 101 static int logo_lines; 102 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO 103 enums. */ 104 static int logo_shown = FBCON_LOGO_CANSHOW; 105 /* Software scrollback */ 106 static int fbcon_softback_size = 32768; 107 static unsigned long softback_buf, softback_curr; 108 static unsigned long softback_in; 109 static unsigned long softback_top, softback_end; 110 static int softback_lines; 111 /* console mappings */ 112 static int first_fb_vc; 113 static int last_fb_vc = MAX_NR_CONSOLES - 1; 114 static int fbcon_is_default = 1; 115 static int fbcon_has_exited; 116 static int primary_device = -1; 117 static int fbcon_has_console_bind; 118 119 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 120 static int map_override; 121 122 static inline void fbcon_map_override(void) 123 { 124 map_override = 1; 125 } 126 #else 127 static inline void fbcon_map_override(void) 128 { 129 } 130 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */ 131 132 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 133 static bool deferred_takeover = true; 134 #else 135 #define deferred_takeover false 136 #endif 137 138 /* font data */ 139 static char fontname[40]; 140 141 /* current fb_info */ 142 static int info_idx = -1; 143 144 /* console rotation */ 145 static int initial_rotation = -1; 146 static int fbcon_has_sysfs; 147 static int margin_color; 148 149 static const struct consw fb_con; 150 151 #define CM_SOFTBACK (8) 152 153 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) 154 155 static int fbcon_set_origin(struct vc_data *); 156 157 static int fbcon_cursor_noblink; 158 159 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) 160 161 /* 162 * Interface used by the world 163 */ 164 165 static const char *fbcon_startup(void); 166 static void fbcon_init(struct vc_data *vc, int init); 167 static void fbcon_deinit(struct vc_data *vc); 168 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 169 int width); 170 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); 171 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 172 int count, int ypos, int xpos); 173 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); 174 static void fbcon_cursor(struct vc_data *vc, int mode); 175 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 176 int height, int width); 177 static int fbcon_switch(struct vc_data *vc); 178 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); 179 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table); 180 181 /* 182 * Internal routines 183 */ 184 static __inline__ void ywrap_up(struct vc_data *vc, int count); 185 static __inline__ void ywrap_down(struct vc_data *vc, int count); 186 static __inline__ void ypan_up(struct vc_data *vc, int count); 187 static __inline__ void ypan_down(struct vc_data *vc, int count); 188 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, 189 int dy, int dx, int height, int width, u_int y_break); 190 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 191 int unit); 192 static void fbcon_redraw_move(struct vc_data *vc, struct display *p, 193 int line, int count, int dy); 194 static void fbcon_modechanged(struct fb_info *info); 195 static void fbcon_set_all_vcs(struct fb_info *info); 196 static void fbcon_start(void); 197 static void fbcon_exit(void); 198 static struct device *fbcon_device; 199 200 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION 201 static inline void fbcon_set_rotation(struct fb_info *info) 202 { 203 struct fbcon_ops *ops = info->fbcon_par; 204 205 if (!(info->flags & FBINFO_MISC_TILEBLITTING) && 206 ops->p->con_rotate < 4) 207 ops->rotate = ops->p->con_rotate; 208 else 209 ops->rotate = 0; 210 } 211 212 static void fbcon_rotate(struct fb_info *info, u32 rotate) 213 { 214 struct fbcon_ops *ops= info->fbcon_par; 215 struct fb_info *fb_info; 216 217 if (!ops || ops->currcon == -1) 218 return; 219 220 fb_info = registered_fb[con2fb_map[ops->currcon]]; 221 222 if (info == fb_info) { 223 struct display *p = &fb_display[ops->currcon]; 224 225 if (rotate < 4) 226 p->con_rotate = rotate; 227 else 228 p->con_rotate = 0; 229 230 fbcon_modechanged(info); 231 } 232 } 233 234 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 235 { 236 struct fbcon_ops *ops = info->fbcon_par; 237 struct vc_data *vc; 238 struct display *p; 239 int i; 240 241 if (!ops || ops->currcon < 0 || rotate > 3) 242 return; 243 244 for (i = first_fb_vc; i <= last_fb_vc; i++) { 245 vc = vc_cons[i].d; 246 if (!vc || vc->vc_mode != KD_TEXT || 247 registered_fb[con2fb_map[i]] != info) 248 continue; 249 250 p = &fb_display[vc->vc_num]; 251 p->con_rotate = rotate; 252 } 253 254 fbcon_set_all_vcs(info); 255 } 256 #else 257 static inline void fbcon_set_rotation(struct fb_info *info) 258 { 259 struct fbcon_ops *ops = info->fbcon_par; 260 261 ops->rotate = FB_ROTATE_UR; 262 } 263 264 static void fbcon_rotate(struct fb_info *info, u32 rotate) 265 { 266 return; 267 } 268 269 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 270 { 271 return; 272 } 273 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ 274 275 static int fbcon_get_rotate(struct fb_info *info) 276 { 277 struct fbcon_ops *ops = info->fbcon_par; 278 279 return (ops) ? ops->rotate : 0; 280 } 281 282 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) 283 { 284 struct fbcon_ops *ops = info->fbcon_par; 285 286 return (info->state != FBINFO_STATE_RUNNING || 287 vc->vc_mode != KD_TEXT || ops->graphics); 288 } 289 290 static int get_color(struct vc_data *vc, struct fb_info *info, 291 u16 c, int is_fg) 292 { 293 int depth = fb_get_color_depth(&info->var, &info->fix); 294 int color = 0; 295 296 if (console_blanked) { 297 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; 298 299 c = vc->vc_video_erase_char & charmask; 300 } 301 302 if (depth != 1) 303 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) 304 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); 305 306 switch (depth) { 307 case 1: 308 { 309 int col = mono_col(info); 310 /* 0 or 1 */ 311 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; 312 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; 313 314 if (console_blanked) 315 fg = bg; 316 317 color = (is_fg) ? fg : bg; 318 break; 319 } 320 case 2: 321 /* 322 * Scale down 16-colors to 4 colors. Default 4-color palette 323 * is grayscale. However, simply dividing the values by 4 324 * will not work, as colors 1, 2 and 3 will be scaled-down 325 * to zero rendering them invisible. So empirically convert 326 * colors to a sane 4-level grayscale. 327 */ 328 switch (color) { 329 case 0: 330 color = 0; /* black */ 331 break; 332 case 1 ... 6: 333 color = 2; /* white */ 334 break; 335 case 7 ... 8: 336 color = 1; /* gray */ 337 break; 338 default: 339 color = 3; /* intense white */ 340 break; 341 } 342 break; 343 case 3: 344 /* 345 * Last 8 entries of default 16-color palette is a more intense 346 * version of the first 8 (i.e., same chrominance, different 347 * luminance). 348 */ 349 color &= 7; 350 break; 351 } 352 353 354 return color; 355 } 356 357 static void fbcon_update_softback(struct vc_data *vc) 358 { 359 int l = fbcon_softback_size / vc->vc_size_row; 360 361 if (l > 5) 362 softback_end = softback_buf + l * vc->vc_size_row; 363 else 364 /* Smaller scrollback makes no sense, and 0 would screw 365 the operation totally */ 366 softback_top = 0; 367 } 368 369 static void fb_flashcursor(struct work_struct *work) 370 { 371 struct fb_info *info = container_of(work, struct fb_info, queue); 372 struct fbcon_ops *ops = info->fbcon_par; 373 struct vc_data *vc = NULL; 374 int c; 375 int mode; 376 int ret; 377 378 /* FIXME: we should sort out the unbind locking instead */ 379 /* instead we just fail to flash the cursor if we can't get 380 * the lock instead of blocking fbcon deinit */ 381 ret = console_trylock(); 382 if (ret == 0) 383 return; 384 385 if (ops && ops->currcon != -1) 386 vc = vc_cons[ops->currcon].d; 387 388 if (!vc || !con_is_visible(vc) || 389 registered_fb[con2fb_map[vc->vc_num]] != info || 390 vc->vc_deccm != 1) { 391 console_unlock(); 392 return; 393 } 394 395 c = scr_readw((u16 *) vc->vc_pos); 396 mode = (!ops->cursor_flash || ops->cursor_state.enable) ? 397 CM_ERASE : CM_DRAW; 398 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1), 399 get_color(vc, info, c, 0)); 400 console_unlock(); 401 } 402 403 static void cursor_timer_handler(struct timer_list *t) 404 { 405 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer); 406 struct fb_info *info = ops->info; 407 408 queue_work(system_power_efficient_wq, &info->queue); 409 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 410 } 411 412 static void fbcon_add_cursor_timer(struct fb_info *info) 413 { 414 struct fbcon_ops *ops = info->fbcon_par; 415 416 if ((!info->queue.func || info->queue.func == fb_flashcursor) && 417 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) && 418 !fbcon_cursor_noblink) { 419 if (!info->queue.func) 420 INIT_WORK(&info->queue, fb_flashcursor); 421 422 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0); 423 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 424 ops->flags |= FBCON_FLAGS_CURSOR_TIMER; 425 } 426 } 427 428 static void fbcon_del_cursor_timer(struct fb_info *info) 429 { 430 struct fbcon_ops *ops = info->fbcon_par; 431 432 if (info->queue.func == fb_flashcursor && 433 ops->flags & FBCON_FLAGS_CURSOR_TIMER) { 434 del_timer_sync(&ops->cursor_timer); 435 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; 436 } 437 } 438 439 #ifndef MODULE 440 static int __init fb_console_setup(char *this_opt) 441 { 442 char *options; 443 int i, j; 444 445 if (!this_opt || !*this_opt) 446 return 1; 447 448 while ((options = strsep(&this_opt, ",")) != NULL) { 449 if (!strncmp(options, "font:", 5)) { 450 strlcpy(fontname, options + 5, sizeof(fontname)); 451 continue; 452 } 453 454 if (!strncmp(options, "scrollback:", 11)) { 455 options += 11; 456 if (*options) { 457 fbcon_softback_size = simple_strtoul(options, &options, 0); 458 if (*options == 'k' || *options == 'K') { 459 fbcon_softback_size *= 1024; 460 } 461 } 462 continue; 463 } 464 465 if (!strncmp(options, "map:", 4)) { 466 options += 4; 467 if (*options) { 468 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { 469 if (!options[j]) 470 j = 0; 471 con2fb_map_boot[i] = 472 (options[j++]-'0') % FB_MAX; 473 } 474 475 fbcon_map_override(); 476 } 477 continue; 478 } 479 480 if (!strncmp(options, "vc:", 3)) { 481 options += 3; 482 if (*options) 483 first_fb_vc = simple_strtoul(options, &options, 10) - 1; 484 if (first_fb_vc < 0) 485 first_fb_vc = 0; 486 if (*options++ == '-') 487 last_fb_vc = simple_strtoul(options, &options, 10) - 1; 488 fbcon_is_default = 0; 489 continue; 490 } 491 492 if (!strncmp(options, "rotate:", 7)) { 493 options += 7; 494 if (*options) 495 initial_rotation = simple_strtoul(options, &options, 0); 496 if (initial_rotation > 3) 497 initial_rotation = 0; 498 continue; 499 } 500 501 if (!strncmp(options, "margin:", 7)) { 502 options += 7; 503 if (*options) 504 margin_color = simple_strtoul(options, &options, 0); 505 continue; 506 } 507 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 508 if (!strcmp(options, "nodefer")) { 509 deferred_takeover = false; 510 continue; 511 } 512 #endif 513 } 514 return 1; 515 } 516 517 __setup("fbcon=", fb_console_setup); 518 #endif 519 520 static int search_fb_in_map(int idx) 521 { 522 int i, retval = 0; 523 524 for (i = first_fb_vc; i <= last_fb_vc; i++) { 525 if (con2fb_map[i] == idx) 526 retval = 1; 527 } 528 return retval; 529 } 530 531 static int search_for_mapped_con(void) 532 { 533 int i, retval = 0; 534 535 for (i = first_fb_vc; i <= last_fb_vc; i++) { 536 if (con2fb_map[i] != -1) 537 retval = 1; 538 } 539 return retval; 540 } 541 542 static int do_fbcon_takeover(int show_logo) 543 { 544 int err, i; 545 546 if (!num_registered_fb) 547 return -ENODEV; 548 549 if (!show_logo) 550 logo_shown = FBCON_LOGO_DONTSHOW; 551 552 for (i = first_fb_vc; i <= last_fb_vc; i++) 553 con2fb_map[i] = info_idx; 554 555 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, 556 fbcon_is_default); 557 558 if (err) { 559 for (i = first_fb_vc; i <= last_fb_vc; i++) 560 con2fb_map[i] = -1; 561 info_idx = -1; 562 } else { 563 fbcon_has_console_bind = 1; 564 } 565 566 return err; 567 } 568 569 #ifdef MODULE 570 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 571 int cols, int rows, int new_cols, int new_rows) 572 { 573 logo_shown = FBCON_LOGO_DONTSHOW; 574 } 575 #else 576 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 577 int cols, int rows, int new_cols, int new_rows) 578 { 579 /* Need to make room for the logo */ 580 struct fbcon_ops *ops = info->fbcon_par; 581 int cnt, erase = vc->vc_video_erase_char, step; 582 unsigned short *save = NULL, *r, *q; 583 int logo_height; 584 585 if (info->fbops->owner) { 586 logo_shown = FBCON_LOGO_DONTSHOW; 587 return; 588 } 589 590 /* 591 * remove underline attribute from erase character 592 * if black and white framebuffer. 593 */ 594 if (fb_get_color_depth(&info->var, &info->fix) == 1) 595 erase &= ~0x400; 596 logo_height = fb_prepare_logo(info, ops->rotate); 597 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); 598 q = (unsigned short *) (vc->vc_origin + 599 vc->vc_size_row * rows); 600 step = logo_lines * cols; 601 for (r = q - logo_lines * cols; r < q; r++) 602 if (scr_readw(r) != vc->vc_video_erase_char) 603 break; 604 if (r != q && new_rows >= rows + logo_lines) { 605 save = kmalloc(array3_size(logo_lines, new_cols, 2), 606 GFP_KERNEL); 607 if (save) { 608 int i = cols < new_cols ? cols : new_cols; 609 scr_memsetw(save, erase, logo_lines * new_cols * 2); 610 r = q - step; 611 for (cnt = 0; cnt < logo_lines; cnt++, r += i) 612 scr_memcpyw(save + cnt * new_cols, r, 2 * i); 613 r = q; 614 } 615 } 616 if (r == q) { 617 /* We can scroll screen down */ 618 r = q - step - cols; 619 for (cnt = rows - logo_lines; cnt > 0; cnt--) { 620 scr_memcpyw(r + step, r, vc->vc_size_row); 621 r -= cols; 622 } 623 if (!save) { 624 int lines; 625 if (vc->vc_y + logo_lines >= rows) 626 lines = rows - vc->vc_y - 1; 627 else 628 lines = logo_lines; 629 vc->vc_y += lines; 630 vc->vc_pos += lines * vc->vc_size_row; 631 } 632 } 633 scr_memsetw((unsigned short *) vc->vc_origin, 634 erase, 635 vc->vc_size_row * logo_lines); 636 637 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 638 fbcon_clear_margins(vc, 0); 639 update_screen(vc); 640 } 641 642 if (save) { 643 q = (unsigned short *) (vc->vc_origin + 644 vc->vc_size_row * 645 rows); 646 scr_memcpyw(q, save, logo_lines * new_cols * 2); 647 vc->vc_y += logo_lines; 648 vc->vc_pos += logo_lines * vc->vc_size_row; 649 kfree(save); 650 } 651 652 if (logo_lines > vc->vc_bottom) { 653 logo_shown = FBCON_LOGO_CANSHOW; 654 printk(KERN_INFO 655 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 656 } else if (logo_shown != FBCON_LOGO_DONTSHOW) { 657 logo_shown = FBCON_LOGO_DRAW; 658 vc->vc_top = logo_lines; 659 } 660 } 661 #endif /* MODULE */ 662 663 #ifdef CONFIG_FB_TILEBLITTING 664 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 665 { 666 struct fbcon_ops *ops = info->fbcon_par; 667 668 ops->p = &fb_display[vc->vc_num]; 669 670 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 671 fbcon_set_tileops(vc, info); 672 else { 673 fbcon_set_rotation(info); 674 fbcon_set_bitops(ops); 675 } 676 } 677 678 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 679 { 680 int err = 0; 681 682 if (info->flags & FBINFO_MISC_TILEBLITTING && 683 info->tileops->fb_get_tilemax(info) < charcount) 684 err = 1; 685 686 return err; 687 } 688 #else 689 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 690 { 691 struct fbcon_ops *ops = info->fbcon_par; 692 693 info->flags &= ~FBINFO_MISC_TILEBLITTING; 694 ops->p = &fb_display[vc->vc_num]; 695 fbcon_set_rotation(info); 696 fbcon_set_bitops(ops); 697 } 698 699 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 700 { 701 return 0; 702 } 703 704 #endif /* CONFIG_MISC_TILEBLITTING */ 705 706 707 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 708 int unit, int oldidx) 709 { 710 struct fbcon_ops *ops = NULL; 711 int err = 0; 712 713 if (!try_module_get(info->fbops->owner)) 714 err = -ENODEV; 715 716 if (!err && info->fbops->fb_open && 717 info->fbops->fb_open(info, 0)) 718 err = -ENODEV; 719 720 if (!err) { 721 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 722 if (!ops) 723 err = -ENOMEM; 724 } 725 726 if (!err) { 727 ops->cur_blink_jiffies = HZ / 5; 728 ops->info = info; 729 info->fbcon_par = ops; 730 731 if (vc) 732 set_blitting_type(vc, info); 733 } 734 735 if (err) { 736 con2fb_map[unit] = oldidx; 737 module_put(info->fbops->owner); 738 } 739 740 return err; 741 } 742 743 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 744 struct fb_info *newinfo, int unit, 745 int oldidx, int found) 746 { 747 struct fbcon_ops *ops = oldinfo->fbcon_par; 748 int err = 0, ret; 749 750 if (oldinfo->fbops->fb_release && 751 oldinfo->fbops->fb_release(oldinfo, 0)) { 752 con2fb_map[unit] = oldidx; 753 if (!found && newinfo->fbops->fb_release) 754 newinfo->fbops->fb_release(newinfo, 0); 755 if (!found) 756 module_put(newinfo->fbops->owner); 757 err = -ENODEV; 758 } 759 760 if (!err) { 761 fbcon_del_cursor_timer(oldinfo); 762 kfree(ops->cursor_state.mask); 763 kfree(ops->cursor_data); 764 kfree(ops->cursor_src); 765 kfree(ops->fontbuffer); 766 kfree(oldinfo->fbcon_par); 767 oldinfo->fbcon_par = NULL; 768 module_put(oldinfo->fbops->owner); 769 /* 770 If oldinfo and newinfo are driving the same hardware, 771 the fb_release() method of oldinfo may attempt to 772 restore the hardware state. This will leave the 773 newinfo in an undefined state. Thus, a call to 774 fb_set_par() may be needed for the newinfo. 775 */ 776 if (newinfo && newinfo->fbops->fb_set_par) { 777 ret = newinfo->fbops->fb_set_par(newinfo); 778 779 if (ret) 780 printk(KERN_ERR "con2fb_release_oldinfo: " 781 "detected unhandled fb_set_par error, " 782 "error code %d\n", ret); 783 } 784 } 785 786 return err; 787 } 788 789 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 790 int unit, int show_logo) 791 { 792 struct fbcon_ops *ops = info->fbcon_par; 793 int ret; 794 795 ops->currcon = fg_console; 796 797 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 798 ret = info->fbops->fb_set_par(info); 799 800 if (ret) 801 printk(KERN_ERR "con2fb_init_display: detected " 802 "unhandled fb_set_par error, " 803 "error code %d\n", ret); 804 } 805 806 ops->flags |= FBCON_FLAGS_INIT; 807 ops->graphics = 0; 808 fbcon_set_disp(info, &info->var, unit); 809 810 if (show_logo) { 811 struct vc_data *fg_vc = vc_cons[fg_console].d; 812 struct fb_info *fg_info = 813 registered_fb[con2fb_map[fg_console]]; 814 815 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 816 fg_vc->vc_rows, fg_vc->vc_cols, 817 fg_vc->vc_rows); 818 } 819 820 update_screen(vc_cons[fg_console].d); 821 } 822 823 /** 824 * set_con2fb_map - map console to frame buffer device 825 * @unit: virtual console number to map 826 * @newidx: frame buffer index to map virtual console to 827 * @user: user request 828 * 829 * Maps a virtual console @unit to a frame buffer device 830 * @newidx. 831 * 832 * This should be called with the console lock held. 833 */ 834 static int set_con2fb_map(int unit, int newidx, int user) 835 { 836 struct vc_data *vc = vc_cons[unit].d; 837 int oldidx = con2fb_map[unit]; 838 struct fb_info *info = registered_fb[newidx]; 839 struct fb_info *oldinfo = NULL; 840 int found, err = 0; 841 842 WARN_CONSOLE_UNLOCKED(); 843 844 if (oldidx == newidx) 845 return 0; 846 847 if (!info) 848 return -EINVAL; 849 850 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 851 info_idx = newidx; 852 return do_fbcon_takeover(0); 853 } 854 855 if (oldidx != -1) 856 oldinfo = registered_fb[oldidx]; 857 858 found = search_fb_in_map(newidx); 859 860 con2fb_map[unit] = newidx; 861 if (!err && !found) 862 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 863 864 865 /* 866 * If old fb is not mapped to any of the consoles, 867 * fbcon should release it. 868 */ 869 if (!err && oldinfo && !search_fb_in_map(oldidx)) 870 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 871 found); 872 873 if (!err) { 874 int show_logo = (fg_console == 0 && !user && 875 logo_shown != FBCON_LOGO_DONTSHOW); 876 877 if (!found) 878 fbcon_add_cursor_timer(info); 879 con2fb_map_boot[unit] = newidx; 880 con2fb_init_display(vc, info, unit, show_logo); 881 } 882 883 if (!search_fb_in_map(info_idx)) 884 info_idx = newidx; 885 886 return err; 887 } 888 889 /* 890 * Low Level Operations 891 */ 892 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 893 static int var_to_display(struct display *disp, 894 struct fb_var_screeninfo *var, 895 struct fb_info *info) 896 { 897 disp->xres_virtual = var->xres_virtual; 898 disp->yres_virtual = var->yres_virtual; 899 disp->bits_per_pixel = var->bits_per_pixel; 900 disp->grayscale = var->grayscale; 901 disp->nonstd = var->nonstd; 902 disp->accel_flags = var->accel_flags; 903 disp->height = var->height; 904 disp->width = var->width; 905 disp->red = var->red; 906 disp->green = var->green; 907 disp->blue = var->blue; 908 disp->transp = var->transp; 909 disp->rotate = var->rotate; 910 disp->mode = fb_match_mode(var, &info->modelist); 911 if (disp->mode == NULL) 912 /* This should not happen */ 913 return -EINVAL; 914 return 0; 915 } 916 917 static void display_to_var(struct fb_var_screeninfo *var, 918 struct display *disp) 919 { 920 fb_videomode_to_var(var, disp->mode); 921 var->xres_virtual = disp->xres_virtual; 922 var->yres_virtual = disp->yres_virtual; 923 var->bits_per_pixel = disp->bits_per_pixel; 924 var->grayscale = disp->grayscale; 925 var->nonstd = disp->nonstd; 926 var->accel_flags = disp->accel_flags; 927 var->height = disp->height; 928 var->width = disp->width; 929 var->red = disp->red; 930 var->green = disp->green; 931 var->blue = disp->blue; 932 var->transp = disp->transp; 933 var->rotate = disp->rotate; 934 } 935 936 static const char *fbcon_startup(void) 937 { 938 const char *display_desc = "frame buffer device"; 939 struct display *p = &fb_display[fg_console]; 940 struct vc_data *vc = vc_cons[fg_console].d; 941 const struct font_desc *font = NULL; 942 struct module *owner; 943 struct fb_info *info = NULL; 944 struct fbcon_ops *ops; 945 int rows, cols; 946 947 /* 948 * If num_registered_fb is zero, this is a call for the dummy part. 949 * The frame buffer devices weren't initialized yet. 950 */ 951 if (!num_registered_fb || info_idx == -1) 952 return display_desc; 953 /* 954 * Instead of blindly using registered_fb[0], we use info_idx, set by 955 * fb_console_init(); 956 */ 957 info = registered_fb[info_idx]; 958 if (!info) 959 return NULL; 960 961 owner = info->fbops->owner; 962 if (!try_module_get(owner)) 963 return NULL; 964 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 965 module_put(owner); 966 return NULL; 967 } 968 969 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 970 if (!ops) { 971 module_put(owner); 972 return NULL; 973 } 974 975 ops->currcon = -1; 976 ops->graphics = 1; 977 ops->cur_rotate = -1; 978 ops->cur_blink_jiffies = HZ / 5; 979 ops->info = info; 980 info->fbcon_par = ops; 981 982 p->con_rotate = initial_rotation; 983 if (p->con_rotate == -1) 984 p->con_rotate = info->fbcon_rotate_hint; 985 if (p->con_rotate == -1) 986 p->con_rotate = FB_ROTATE_UR; 987 988 set_blitting_type(vc, info); 989 990 if (info->fix.type != FB_TYPE_TEXT) { 991 if (fbcon_softback_size) { 992 if (!softback_buf) { 993 softback_buf = 994 (unsigned long) 995 kmalloc(fbcon_softback_size, 996 GFP_KERNEL); 997 if (!softback_buf) { 998 fbcon_softback_size = 0; 999 softback_top = 0; 1000 } 1001 } 1002 } else { 1003 if (softback_buf) { 1004 kfree((void *) softback_buf); 1005 softback_buf = 0; 1006 softback_top = 0; 1007 } 1008 } 1009 if (softback_buf) 1010 softback_in = softback_top = softback_curr = 1011 softback_buf; 1012 softback_lines = 0; 1013 } 1014 1015 /* Setup default font */ 1016 if (!p->fontdata && !vc->vc_font.data) { 1017 if (!fontname[0] || !(font = find_font(fontname))) 1018 font = get_default_font(info->var.xres, 1019 info->var.yres, 1020 info->pixmap.blit_x, 1021 info->pixmap.blit_y); 1022 vc->vc_font.width = font->width; 1023 vc->vc_font.height = font->height; 1024 vc->vc_font.data = (void *)(p->fontdata = font->data); 1025 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1026 } else { 1027 p->fontdata = vc->vc_font.data; 1028 } 1029 1030 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1031 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1032 cols /= vc->vc_font.width; 1033 rows /= vc->vc_font.height; 1034 vc_resize(vc, cols, rows); 1035 1036 DPRINTK("mode: %s\n", info->fix.id); 1037 DPRINTK("visual: %d\n", info->fix.visual); 1038 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1039 info->var.yres, 1040 info->var.bits_per_pixel); 1041 1042 fbcon_add_cursor_timer(info); 1043 fbcon_has_exited = 0; 1044 return display_desc; 1045 } 1046 1047 static void fbcon_init(struct vc_data *vc, int init) 1048 { 1049 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1050 struct fbcon_ops *ops; 1051 struct vc_data **default_mode = vc->vc_display_fg; 1052 struct vc_data *svc = *default_mode; 1053 struct display *t, *p = &fb_display[vc->vc_num]; 1054 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1055 int cap, ret; 1056 1057 if (info_idx == -1 || info == NULL) 1058 return; 1059 1060 cap = info->flags; 1061 1062 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1063 (info->fix.type == FB_TYPE_TEXT)) 1064 logo = 0; 1065 1066 if (var_to_display(p, &info->var, info)) 1067 return; 1068 1069 if (!info->fbcon_par) 1070 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1071 1072 /* If we are not the first console on this 1073 fb, copy the font from that console */ 1074 t = &fb_display[fg_console]; 1075 if (!p->fontdata) { 1076 if (t->fontdata) { 1077 struct vc_data *fvc = vc_cons[fg_console].d; 1078 1079 vc->vc_font.data = (void *)(p->fontdata = 1080 fvc->vc_font.data); 1081 vc->vc_font.width = fvc->vc_font.width; 1082 vc->vc_font.height = fvc->vc_font.height; 1083 p->userfont = t->userfont; 1084 1085 if (p->userfont) 1086 REFCOUNT(p->fontdata)++; 1087 } else { 1088 const struct font_desc *font = NULL; 1089 1090 if (!fontname[0] || !(font = find_font(fontname))) 1091 font = get_default_font(info->var.xres, 1092 info->var.yres, 1093 info->pixmap.blit_x, 1094 info->pixmap.blit_y); 1095 vc->vc_font.width = font->width; 1096 vc->vc_font.height = font->height; 1097 vc->vc_font.data = (void *)(p->fontdata = font->data); 1098 vc->vc_font.charcount = 256; /* FIXME Need to 1099 support more fonts */ 1100 } 1101 } 1102 1103 if (p->userfont) 1104 charcnt = FNTCHARCNT(p->fontdata); 1105 1106 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1107 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1108 if (charcnt == 256) { 1109 vc->vc_hi_font_mask = 0; 1110 } else { 1111 vc->vc_hi_font_mask = 0x100; 1112 if (vc->vc_can_do_color) 1113 vc->vc_complement_mask <<= 1; 1114 } 1115 1116 if (!*svc->vc_uni_pagedir_loc) 1117 con_set_default_unimap(svc); 1118 if (!*vc->vc_uni_pagedir_loc) 1119 con_copy_unimap(vc, svc); 1120 1121 ops = info->fbcon_par; 1122 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1123 1124 p->con_rotate = initial_rotation; 1125 if (p->con_rotate == -1) 1126 p->con_rotate = info->fbcon_rotate_hint; 1127 if (p->con_rotate == -1) 1128 p->con_rotate = FB_ROTATE_UR; 1129 1130 set_blitting_type(vc, info); 1131 1132 cols = vc->vc_cols; 1133 rows = vc->vc_rows; 1134 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1135 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1136 new_cols /= vc->vc_font.width; 1137 new_rows /= vc->vc_font.height; 1138 1139 /* 1140 * We must always set the mode. The mode of the previous console 1141 * driver could be in the same resolution but we are using different 1142 * hardware so we have to initialize the hardware. 1143 * 1144 * We need to do it in fbcon_init() to prevent screen corruption. 1145 */ 1146 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1147 if (info->fbops->fb_set_par && 1148 !(ops->flags & FBCON_FLAGS_INIT)) { 1149 ret = info->fbops->fb_set_par(info); 1150 1151 if (ret) 1152 printk(KERN_ERR "fbcon_init: detected " 1153 "unhandled fb_set_par error, " 1154 "error code %d\n", ret); 1155 } 1156 1157 ops->flags |= FBCON_FLAGS_INIT; 1158 } 1159 1160 ops->graphics = 0; 1161 1162 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1163 !(cap & FBINFO_HWACCEL_DISABLED)) 1164 p->scrollmode = SCROLL_MOVE; 1165 else /* default to something safe */ 1166 p->scrollmode = SCROLL_REDRAW; 1167 1168 /* 1169 * ++guenther: console.c:vc_allocate() relies on initializing 1170 * vc_{cols,rows}, but we must not set those if we are only 1171 * resizing the console. 1172 */ 1173 if (init) { 1174 vc->vc_cols = new_cols; 1175 vc->vc_rows = new_rows; 1176 } else 1177 vc_resize(vc, new_cols, new_rows); 1178 1179 if (logo) 1180 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1181 1182 if (vc == svc && softback_buf) 1183 fbcon_update_softback(vc); 1184 1185 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1186 ops->rotate = FB_ROTATE_UR; 1187 set_blitting_type(vc, info); 1188 } 1189 1190 ops->p = &fb_display[fg_console]; 1191 } 1192 1193 static void fbcon_free_font(struct display *p, bool freefont) 1194 { 1195 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1196 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1197 p->fontdata = NULL; 1198 p->userfont = 0; 1199 } 1200 1201 static void set_vc_hi_font(struct vc_data *vc, bool set); 1202 1203 static void fbcon_deinit(struct vc_data *vc) 1204 { 1205 struct display *p = &fb_display[vc->vc_num]; 1206 struct fb_info *info; 1207 struct fbcon_ops *ops; 1208 int idx; 1209 bool free_font = true; 1210 1211 idx = con2fb_map[vc->vc_num]; 1212 1213 if (idx == -1) 1214 goto finished; 1215 1216 info = registered_fb[idx]; 1217 1218 if (!info) 1219 goto finished; 1220 1221 if (info->flags & FBINFO_MISC_FIRMWARE) 1222 free_font = false; 1223 ops = info->fbcon_par; 1224 1225 if (!ops) 1226 goto finished; 1227 1228 if (con_is_visible(vc)) 1229 fbcon_del_cursor_timer(info); 1230 1231 ops->flags &= ~FBCON_FLAGS_INIT; 1232 finished: 1233 1234 fbcon_free_font(p, free_font); 1235 if (free_font) 1236 vc->vc_font.data = NULL; 1237 1238 if (vc->vc_hi_font_mask) 1239 set_vc_hi_font(vc, false); 1240 1241 if (!con_is_bound(&fb_con)) 1242 fbcon_exit(); 1243 1244 return; 1245 } 1246 1247 /* ====================================================================== */ 1248 1249 /* fbcon_XXX routines - interface used by the world 1250 * 1251 * This system is now divided into two levels because of complications 1252 * caused by hardware scrolling. Top level functions: 1253 * 1254 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1255 * 1256 * handles y values in range [0, scr_height-1] that correspond to real 1257 * screen positions. y_wrap shift means that first line of bitmap may be 1258 * anywhere on this display. These functions convert lineoffsets to 1259 * bitmap offsets and deal with the wrap-around case by splitting blits. 1260 * 1261 * fbcon_bmove_physical_8() -- These functions fast implementations 1262 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1263 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1264 * 1265 * WARNING: 1266 * 1267 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1268 * Implies should only really hardware scroll in rows. Only reason for 1269 * restriction is simplicity & efficiency at the moment. 1270 */ 1271 1272 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1273 int width) 1274 { 1275 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1276 struct fbcon_ops *ops = info->fbcon_par; 1277 1278 struct display *p = &fb_display[vc->vc_num]; 1279 u_int y_break; 1280 1281 if (fbcon_is_inactive(vc, info)) 1282 return; 1283 1284 if (!height || !width) 1285 return; 1286 1287 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1288 vc->vc_top = 0; 1289 /* 1290 * If the font dimensions are not an integral of the display 1291 * dimensions then the ops->clear below won't end up clearing 1292 * the margins. Call clear_margins here in case the logo 1293 * bitmap stretched into the margin area. 1294 */ 1295 fbcon_clear_margins(vc, 0); 1296 } 1297 1298 /* Split blits that cross physical y_wrap boundary */ 1299 1300 y_break = p->vrows - p->yscroll; 1301 if (sy < y_break && sy + height - 1 >= y_break) { 1302 u_int b = y_break - sy; 1303 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1304 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1305 width); 1306 } else 1307 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1308 } 1309 1310 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1311 int count, int ypos, int xpos) 1312 { 1313 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1314 struct display *p = &fb_display[vc->vc_num]; 1315 struct fbcon_ops *ops = info->fbcon_par; 1316 1317 if (!fbcon_is_inactive(vc, info)) 1318 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1319 get_color(vc, info, scr_readw(s), 1), 1320 get_color(vc, info, scr_readw(s), 0)); 1321 } 1322 1323 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1324 { 1325 unsigned short chr; 1326 1327 scr_writew(c, &chr); 1328 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1329 } 1330 1331 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1332 { 1333 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1334 struct fbcon_ops *ops = info->fbcon_par; 1335 1336 if (!fbcon_is_inactive(vc, info)) 1337 ops->clear_margins(vc, info, margin_color, bottom_only); 1338 } 1339 1340 static void fbcon_cursor(struct vc_data *vc, int mode) 1341 { 1342 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1343 struct fbcon_ops *ops = info->fbcon_par; 1344 int y; 1345 int c = scr_readw((u16 *) vc->vc_pos); 1346 1347 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1348 1349 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1350 return; 1351 1352 if (vc->vc_cursor_type & 0x10) 1353 fbcon_del_cursor_timer(info); 1354 else 1355 fbcon_add_cursor_timer(info); 1356 1357 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1358 if (mode & CM_SOFTBACK) { 1359 mode &= ~CM_SOFTBACK; 1360 y = softback_lines; 1361 } else { 1362 if (softback_lines) 1363 fbcon_set_origin(vc); 1364 y = 0; 1365 } 1366 1367 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), 1368 get_color(vc, info, c, 0)); 1369 } 1370 1371 static int scrollback_phys_max = 0; 1372 static int scrollback_max = 0; 1373 static int scrollback_current = 0; 1374 1375 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1376 int unit) 1377 { 1378 struct display *p, *t; 1379 struct vc_data **default_mode, *vc; 1380 struct vc_data *svc; 1381 struct fbcon_ops *ops = info->fbcon_par; 1382 int rows, cols, charcnt = 256; 1383 1384 p = &fb_display[unit]; 1385 1386 if (var_to_display(p, var, info)) 1387 return; 1388 1389 vc = vc_cons[unit].d; 1390 1391 if (!vc) 1392 return; 1393 1394 default_mode = vc->vc_display_fg; 1395 svc = *default_mode; 1396 t = &fb_display[svc->vc_num]; 1397 1398 if (!vc->vc_font.data) { 1399 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1400 vc->vc_font.width = (*default_mode)->vc_font.width; 1401 vc->vc_font.height = (*default_mode)->vc_font.height; 1402 p->userfont = t->userfont; 1403 if (p->userfont) 1404 REFCOUNT(p->fontdata)++; 1405 } 1406 if (p->userfont) 1407 charcnt = FNTCHARCNT(p->fontdata); 1408 1409 var->activate = FB_ACTIVATE_NOW; 1410 info->var.activate = var->activate; 1411 var->yoffset = info->var.yoffset; 1412 var->xoffset = info->var.xoffset; 1413 fb_set_var(info, var); 1414 ops->var = info->var; 1415 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1416 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1417 if (charcnt == 256) { 1418 vc->vc_hi_font_mask = 0; 1419 } else { 1420 vc->vc_hi_font_mask = 0x100; 1421 if (vc->vc_can_do_color) 1422 vc->vc_complement_mask <<= 1; 1423 } 1424 1425 if (!*svc->vc_uni_pagedir_loc) 1426 con_set_default_unimap(svc); 1427 if (!*vc->vc_uni_pagedir_loc) 1428 con_copy_unimap(vc, svc); 1429 1430 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1431 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1432 cols /= vc->vc_font.width; 1433 rows /= vc->vc_font.height; 1434 vc_resize(vc, cols, rows); 1435 1436 if (con_is_visible(vc)) { 1437 update_screen(vc); 1438 if (softback_buf) 1439 fbcon_update_softback(vc); 1440 } 1441 } 1442 1443 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1444 { 1445 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1446 struct fbcon_ops *ops = info->fbcon_par; 1447 struct display *p = &fb_display[vc->vc_num]; 1448 1449 p->yscroll += count; 1450 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1451 p->yscroll -= p->vrows; 1452 ops->var.xoffset = 0; 1453 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1454 ops->var.vmode |= FB_VMODE_YWRAP; 1455 ops->update_start(info); 1456 scrollback_max += count; 1457 if (scrollback_max > scrollback_phys_max) 1458 scrollback_max = scrollback_phys_max; 1459 scrollback_current = 0; 1460 } 1461 1462 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1463 { 1464 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1465 struct fbcon_ops *ops = info->fbcon_par; 1466 struct display *p = &fb_display[vc->vc_num]; 1467 1468 p->yscroll -= count; 1469 if (p->yscroll < 0) /* Deal with wrap */ 1470 p->yscroll += p->vrows; 1471 ops->var.xoffset = 0; 1472 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1473 ops->var.vmode |= FB_VMODE_YWRAP; 1474 ops->update_start(info); 1475 scrollback_max -= count; 1476 if (scrollback_max < 0) 1477 scrollback_max = 0; 1478 scrollback_current = 0; 1479 } 1480 1481 static __inline__ void ypan_up(struct vc_data *vc, int count) 1482 { 1483 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1484 struct display *p = &fb_display[vc->vc_num]; 1485 struct fbcon_ops *ops = info->fbcon_par; 1486 1487 p->yscroll += count; 1488 if (p->yscroll > p->vrows - vc->vc_rows) { 1489 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1490 0, 0, 0, vc->vc_rows, vc->vc_cols); 1491 p->yscroll -= p->vrows - vc->vc_rows; 1492 } 1493 1494 ops->var.xoffset = 0; 1495 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1496 ops->var.vmode &= ~FB_VMODE_YWRAP; 1497 ops->update_start(info); 1498 fbcon_clear_margins(vc, 1); 1499 scrollback_max += count; 1500 if (scrollback_max > scrollback_phys_max) 1501 scrollback_max = scrollback_phys_max; 1502 scrollback_current = 0; 1503 } 1504 1505 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1506 { 1507 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1508 struct fbcon_ops *ops = info->fbcon_par; 1509 struct display *p = &fb_display[vc->vc_num]; 1510 1511 p->yscroll += count; 1512 1513 if (p->yscroll > p->vrows - vc->vc_rows) { 1514 p->yscroll -= p->vrows - vc->vc_rows; 1515 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1516 } 1517 1518 ops->var.xoffset = 0; 1519 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1520 ops->var.vmode &= ~FB_VMODE_YWRAP; 1521 ops->update_start(info); 1522 fbcon_clear_margins(vc, 1); 1523 scrollback_max += count; 1524 if (scrollback_max > scrollback_phys_max) 1525 scrollback_max = scrollback_phys_max; 1526 scrollback_current = 0; 1527 } 1528 1529 static __inline__ void ypan_down(struct vc_data *vc, int count) 1530 { 1531 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1532 struct display *p = &fb_display[vc->vc_num]; 1533 struct fbcon_ops *ops = info->fbcon_par; 1534 1535 p->yscroll -= count; 1536 if (p->yscroll < 0) { 1537 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1538 0, vc->vc_rows, vc->vc_cols); 1539 p->yscroll += p->vrows - vc->vc_rows; 1540 } 1541 1542 ops->var.xoffset = 0; 1543 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1544 ops->var.vmode &= ~FB_VMODE_YWRAP; 1545 ops->update_start(info); 1546 fbcon_clear_margins(vc, 1); 1547 scrollback_max -= count; 1548 if (scrollback_max < 0) 1549 scrollback_max = 0; 1550 scrollback_current = 0; 1551 } 1552 1553 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1554 { 1555 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1556 struct fbcon_ops *ops = info->fbcon_par; 1557 struct display *p = &fb_display[vc->vc_num]; 1558 1559 p->yscroll -= count; 1560 1561 if (p->yscroll < 0) { 1562 p->yscroll += p->vrows - vc->vc_rows; 1563 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1564 } 1565 1566 ops->var.xoffset = 0; 1567 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1568 ops->var.vmode &= ~FB_VMODE_YWRAP; 1569 ops->update_start(info); 1570 fbcon_clear_margins(vc, 1); 1571 scrollback_max -= count; 1572 if (scrollback_max < 0) 1573 scrollback_max = 0; 1574 scrollback_current = 0; 1575 } 1576 1577 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, 1578 long delta) 1579 { 1580 int count = vc->vc_rows; 1581 unsigned short *d, *s; 1582 unsigned long n; 1583 int line = 0; 1584 1585 d = (u16 *) softback_curr; 1586 if (d == (u16 *) softback_in) 1587 d = (u16 *) vc->vc_origin; 1588 n = softback_curr + delta * vc->vc_size_row; 1589 softback_lines -= delta; 1590 if (delta < 0) { 1591 if (softback_curr < softback_top && n < softback_buf) { 1592 n += softback_end - softback_buf; 1593 if (n < softback_top) { 1594 softback_lines -= 1595 (softback_top - n) / vc->vc_size_row; 1596 n = softback_top; 1597 } 1598 } else if (softback_curr >= softback_top 1599 && n < softback_top) { 1600 softback_lines -= 1601 (softback_top - n) / vc->vc_size_row; 1602 n = softback_top; 1603 } 1604 } else { 1605 if (softback_curr > softback_in && n >= softback_end) { 1606 n += softback_buf - softback_end; 1607 if (n > softback_in) { 1608 n = softback_in; 1609 softback_lines = 0; 1610 } 1611 } else if (softback_curr <= softback_in && n > softback_in) { 1612 n = softback_in; 1613 softback_lines = 0; 1614 } 1615 } 1616 if (n == softback_curr) 1617 return; 1618 softback_curr = n; 1619 s = (u16 *) softback_curr; 1620 if (s == (u16 *) softback_in) 1621 s = (u16 *) vc->vc_origin; 1622 while (count--) { 1623 unsigned short *start; 1624 unsigned short *le; 1625 unsigned short c; 1626 int x = 0; 1627 unsigned short attr = 1; 1628 1629 start = s; 1630 le = advance_row(s, 1); 1631 do { 1632 c = scr_readw(s); 1633 if (attr != (c & 0xff00)) { 1634 attr = c & 0xff00; 1635 if (s > start) { 1636 fbcon_putcs(vc, start, s - start, 1637 line, x); 1638 x += s - start; 1639 start = s; 1640 } 1641 } 1642 if (c == scr_readw(d)) { 1643 if (s > start) { 1644 fbcon_putcs(vc, start, s - start, 1645 line, x); 1646 x += s - start + 1; 1647 start = s + 1; 1648 } else { 1649 x++; 1650 start++; 1651 } 1652 } 1653 s++; 1654 d++; 1655 } while (s < le); 1656 if (s > start) 1657 fbcon_putcs(vc, start, s - start, line, x); 1658 line++; 1659 if (d == (u16 *) softback_end) 1660 d = (u16 *) softback_buf; 1661 if (d == (u16 *) softback_in) 1662 d = (u16 *) vc->vc_origin; 1663 if (s == (u16 *) softback_end) 1664 s = (u16 *) softback_buf; 1665 if (s == (u16 *) softback_in) 1666 s = (u16 *) vc->vc_origin; 1667 } 1668 } 1669 1670 static void fbcon_redraw_move(struct vc_data *vc, struct display *p, 1671 int line, int count, int dy) 1672 { 1673 unsigned short *s = (unsigned short *) 1674 (vc->vc_origin + vc->vc_size_row * line); 1675 1676 while (count--) { 1677 unsigned short *start = s; 1678 unsigned short *le = advance_row(s, 1); 1679 unsigned short c; 1680 int x = 0; 1681 unsigned short attr = 1; 1682 1683 do { 1684 c = scr_readw(s); 1685 if (attr != (c & 0xff00)) { 1686 attr = c & 0xff00; 1687 if (s > start) { 1688 fbcon_putcs(vc, start, s - start, 1689 dy, x); 1690 x += s - start; 1691 start = s; 1692 } 1693 } 1694 console_conditional_schedule(); 1695 s++; 1696 } while (s < le); 1697 if (s > start) 1698 fbcon_putcs(vc, start, s - start, dy, x); 1699 console_conditional_schedule(); 1700 dy++; 1701 } 1702 } 1703 1704 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1705 struct display *p, int line, int count, int ycount) 1706 { 1707 int offset = ycount * vc->vc_cols; 1708 unsigned short *d = (unsigned short *) 1709 (vc->vc_origin + vc->vc_size_row * line); 1710 unsigned short *s = d + offset; 1711 struct fbcon_ops *ops = info->fbcon_par; 1712 1713 while (count--) { 1714 unsigned short *start = s; 1715 unsigned short *le = advance_row(s, 1); 1716 unsigned short c; 1717 int x = 0; 1718 1719 do { 1720 c = scr_readw(s); 1721 1722 if (c == scr_readw(d)) { 1723 if (s > start) { 1724 ops->bmove(vc, info, line + ycount, x, 1725 line, x, 1, s-start); 1726 x += s - start + 1; 1727 start = s + 1; 1728 } else { 1729 x++; 1730 start++; 1731 } 1732 } 1733 1734 scr_writew(c, d); 1735 console_conditional_schedule(); 1736 s++; 1737 d++; 1738 } while (s < le); 1739 if (s > start) 1740 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1741 s-start); 1742 console_conditional_schedule(); 1743 if (ycount > 0) 1744 line++; 1745 else { 1746 line--; 1747 /* NOTE: We subtract two lines from these pointers */ 1748 s -= vc->vc_size_row; 1749 d -= vc->vc_size_row; 1750 } 1751 } 1752 } 1753 1754 static void fbcon_redraw(struct vc_data *vc, struct display *p, 1755 int line, int count, int offset) 1756 { 1757 unsigned short *d = (unsigned short *) 1758 (vc->vc_origin + vc->vc_size_row * line); 1759 unsigned short *s = d + offset; 1760 1761 while (count--) { 1762 unsigned short *start = s; 1763 unsigned short *le = advance_row(s, 1); 1764 unsigned short c; 1765 int x = 0; 1766 unsigned short attr = 1; 1767 1768 do { 1769 c = scr_readw(s); 1770 if (attr != (c & 0xff00)) { 1771 attr = c & 0xff00; 1772 if (s > start) { 1773 fbcon_putcs(vc, start, s - start, 1774 line, x); 1775 x += s - start; 1776 start = s; 1777 } 1778 } 1779 if (c == scr_readw(d)) { 1780 if (s > start) { 1781 fbcon_putcs(vc, start, s - start, 1782 line, x); 1783 x += s - start + 1; 1784 start = s + 1; 1785 } else { 1786 x++; 1787 start++; 1788 } 1789 } 1790 scr_writew(c, d); 1791 console_conditional_schedule(); 1792 s++; 1793 d++; 1794 } while (s < le); 1795 if (s > start) 1796 fbcon_putcs(vc, start, s - start, line, x); 1797 console_conditional_schedule(); 1798 if (offset > 0) 1799 line++; 1800 else { 1801 line--; 1802 /* NOTE: We subtract two lines from these pointers */ 1803 s -= vc->vc_size_row; 1804 d -= vc->vc_size_row; 1805 } 1806 } 1807 } 1808 1809 static inline void fbcon_softback_note(struct vc_data *vc, int t, 1810 int count) 1811 { 1812 unsigned short *p; 1813 1814 if (vc->vc_num != fg_console) 1815 return; 1816 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); 1817 1818 while (count) { 1819 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); 1820 count--; 1821 p = advance_row(p, 1); 1822 softback_in += vc->vc_size_row; 1823 if (softback_in == softback_end) 1824 softback_in = softback_buf; 1825 if (softback_in == softback_top) { 1826 softback_top += vc->vc_size_row; 1827 if (softback_top == softback_end) 1828 softback_top = softback_buf; 1829 } 1830 } 1831 softback_curr = softback_in; 1832 } 1833 1834 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1835 enum con_scroll dir, unsigned int count) 1836 { 1837 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1838 struct display *p = &fb_display[vc->vc_num]; 1839 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1840 1841 if (fbcon_is_inactive(vc, info)) 1842 return true; 1843 1844 fbcon_cursor(vc, CM_ERASE); 1845 1846 /* 1847 * ++Geert: Only use ywrap/ypan if the console is in text mode 1848 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1849 * whole screen (prevents flicker). 1850 */ 1851 1852 switch (dir) { 1853 case SM_UP: 1854 if (count > vc->vc_rows) /* Maximum realistic size */ 1855 count = vc->vc_rows; 1856 if (softback_top) 1857 fbcon_softback_note(vc, t, count); 1858 if (logo_shown >= 0) 1859 goto redraw_up; 1860 switch (p->scrollmode) { 1861 case SCROLL_MOVE: 1862 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1863 count); 1864 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1865 scr_memsetw((unsigned short *) (vc->vc_origin + 1866 vc->vc_size_row * 1867 (b - count)), 1868 vc->vc_video_erase_char, 1869 vc->vc_size_row * count); 1870 return true; 1871 break; 1872 1873 case SCROLL_WRAP_MOVE: 1874 if (b - t - count > 3 * vc->vc_rows >> 2) { 1875 if (t > 0) 1876 fbcon_bmove(vc, 0, 0, count, 0, t, 1877 vc->vc_cols); 1878 ywrap_up(vc, count); 1879 if (vc->vc_rows - b > 0) 1880 fbcon_bmove(vc, b - count, 0, b, 0, 1881 vc->vc_rows - b, 1882 vc->vc_cols); 1883 } else if (info->flags & FBINFO_READS_FAST) 1884 fbcon_bmove(vc, t + count, 0, t, 0, 1885 b - t - count, vc->vc_cols); 1886 else 1887 goto redraw_up; 1888 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1889 break; 1890 1891 case SCROLL_PAN_REDRAW: 1892 if ((p->yscroll + count <= 1893 2 * (p->vrows - vc->vc_rows)) 1894 && ((!scroll_partial && (b - t == vc->vc_rows)) 1895 || (scroll_partial 1896 && (b - t - count > 1897 3 * vc->vc_rows >> 2)))) { 1898 if (t > 0) 1899 fbcon_redraw_move(vc, p, 0, t, count); 1900 ypan_up_redraw(vc, t, count); 1901 if (vc->vc_rows - b > 0) 1902 fbcon_redraw_move(vc, p, b, 1903 vc->vc_rows - b, b); 1904 } else 1905 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1906 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1907 break; 1908 1909 case SCROLL_PAN_MOVE: 1910 if ((p->yscroll + count <= 1911 2 * (p->vrows - vc->vc_rows)) 1912 && ((!scroll_partial && (b - t == vc->vc_rows)) 1913 || (scroll_partial 1914 && (b - t - count > 1915 3 * vc->vc_rows >> 2)))) { 1916 if (t > 0) 1917 fbcon_bmove(vc, 0, 0, count, 0, t, 1918 vc->vc_cols); 1919 ypan_up(vc, count); 1920 if (vc->vc_rows - b > 0) 1921 fbcon_bmove(vc, b - count, 0, b, 0, 1922 vc->vc_rows - b, 1923 vc->vc_cols); 1924 } else if (info->flags & FBINFO_READS_FAST) 1925 fbcon_bmove(vc, t + count, 0, t, 0, 1926 b - t - count, vc->vc_cols); 1927 else 1928 goto redraw_up; 1929 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1930 break; 1931 1932 case SCROLL_REDRAW: 1933 redraw_up: 1934 fbcon_redraw(vc, p, t, b - t - count, 1935 count * vc->vc_cols); 1936 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1937 scr_memsetw((unsigned short *) (vc->vc_origin + 1938 vc->vc_size_row * 1939 (b - count)), 1940 vc->vc_video_erase_char, 1941 vc->vc_size_row * count); 1942 return true; 1943 } 1944 break; 1945 1946 case SM_DOWN: 1947 if (count > vc->vc_rows) /* Maximum realistic size */ 1948 count = vc->vc_rows; 1949 if (logo_shown >= 0) 1950 goto redraw_down; 1951 switch (p->scrollmode) { 1952 case SCROLL_MOVE: 1953 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1954 -count); 1955 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1956 scr_memsetw((unsigned short *) (vc->vc_origin + 1957 vc->vc_size_row * 1958 t), 1959 vc->vc_video_erase_char, 1960 vc->vc_size_row * count); 1961 return true; 1962 break; 1963 1964 case SCROLL_WRAP_MOVE: 1965 if (b - t - count > 3 * vc->vc_rows >> 2) { 1966 if (vc->vc_rows - b > 0) 1967 fbcon_bmove(vc, b, 0, b - count, 0, 1968 vc->vc_rows - b, 1969 vc->vc_cols); 1970 ywrap_down(vc, count); 1971 if (t > 0) 1972 fbcon_bmove(vc, count, 0, 0, 0, t, 1973 vc->vc_cols); 1974 } else if (info->flags & FBINFO_READS_FAST) 1975 fbcon_bmove(vc, t, 0, t + count, 0, 1976 b - t - count, vc->vc_cols); 1977 else 1978 goto redraw_down; 1979 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1980 break; 1981 1982 case SCROLL_PAN_MOVE: 1983 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1984 && ((!scroll_partial && (b - t == vc->vc_rows)) 1985 || (scroll_partial 1986 && (b - t - count > 1987 3 * vc->vc_rows >> 2)))) { 1988 if (vc->vc_rows - b > 0) 1989 fbcon_bmove(vc, b, 0, b - count, 0, 1990 vc->vc_rows - b, 1991 vc->vc_cols); 1992 ypan_down(vc, count); 1993 if (t > 0) 1994 fbcon_bmove(vc, count, 0, 0, 0, t, 1995 vc->vc_cols); 1996 } else if (info->flags & FBINFO_READS_FAST) 1997 fbcon_bmove(vc, t, 0, t + count, 0, 1998 b - t - count, vc->vc_cols); 1999 else 2000 goto redraw_down; 2001 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2002 break; 2003 2004 case SCROLL_PAN_REDRAW: 2005 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 2006 && ((!scroll_partial && (b - t == vc->vc_rows)) 2007 || (scroll_partial 2008 && (b - t - count > 2009 3 * vc->vc_rows >> 2)))) { 2010 if (vc->vc_rows - b > 0) 2011 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 2012 b - count); 2013 ypan_down_redraw(vc, t, count); 2014 if (t > 0) 2015 fbcon_redraw_move(vc, p, count, t, 0); 2016 } else 2017 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 2018 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2019 break; 2020 2021 case SCROLL_REDRAW: 2022 redraw_down: 2023 fbcon_redraw(vc, p, b - 1, b - t - count, 2024 -count * vc->vc_cols); 2025 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2026 scr_memsetw((unsigned short *) (vc->vc_origin + 2027 vc->vc_size_row * 2028 t), 2029 vc->vc_video_erase_char, 2030 vc->vc_size_row * count); 2031 return true; 2032 } 2033 } 2034 return false; 2035 } 2036 2037 2038 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 2039 int height, int width) 2040 { 2041 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2042 struct display *p = &fb_display[vc->vc_num]; 2043 2044 if (fbcon_is_inactive(vc, info)) 2045 return; 2046 2047 if (!width || !height) 2048 return; 2049 2050 /* Split blits that cross physical y_wrap case. 2051 * Pathological case involves 4 blits, better to use recursive 2052 * code rather than unrolled case 2053 * 2054 * Recursive invocations don't need to erase the cursor over and 2055 * over again, so we use fbcon_bmove_rec() 2056 */ 2057 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 2058 p->vrows - p->yscroll); 2059 } 2060 2061 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, 2062 int dy, int dx, int height, int width, u_int y_break) 2063 { 2064 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2065 struct fbcon_ops *ops = info->fbcon_par; 2066 u_int b; 2067 2068 if (sy < y_break && sy + height > y_break) { 2069 b = y_break - sy; 2070 if (dy < sy) { /* Avoid trashing self */ 2071 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2072 y_break); 2073 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2074 height - b, width, y_break); 2075 } else { 2076 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2077 height - b, width, y_break); 2078 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2079 y_break); 2080 } 2081 return; 2082 } 2083 2084 if (dy < y_break && dy + height > y_break) { 2085 b = y_break - dy; 2086 if (dy < sy) { /* Avoid trashing self */ 2087 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2088 y_break); 2089 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2090 height - b, width, y_break); 2091 } else { 2092 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2093 height - b, width, y_break); 2094 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2095 y_break); 2096 } 2097 return; 2098 } 2099 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 2100 height, width); 2101 } 2102 2103 static void updatescrollmode(struct display *p, 2104 struct fb_info *info, 2105 struct vc_data *vc) 2106 { 2107 struct fbcon_ops *ops = info->fbcon_par; 2108 int fh = vc->vc_font.height; 2109 int cap = info->flags; 2110 u16 t = 0; 2111 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 2112 info->fix.xpanstep); 2113 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 2114 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2115 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 2116 info->var.xres_virtual); 2117 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 2118 divides(ypan, vc->vc_font.height) && vyres > yres; 2119 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 2120 divides(ywrap, vc->vc_font.height) && 2121 divides(vc->vc_font.height, vyres) && 2122 divides(vc->vc_font.height, yres); 2123 int reading_fast = cap & FBINFO_READS_FAST; 2124 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 2125 !(cap & FBINFO_HWACCEL_DISABLED); 2126 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 2127 !(cap & FBINFO_HWACCEL_DISABLED); 2128 2129 p->vrows = vyres/fh; 2130 if (yres > (fh * (vc->vc_rows + 1))) 2131 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 2132 if ((yres % fh) && (vyres % fh < yres % fh)) 2133 p->vrows--; 2134 2135 if (good_wrap || good_pan) { 2136 if (reading_fast || fast_copyarea) 2137 p->scrollmode = good_wrap ? 2138 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 2139 else 2140 p->scrollmode = good_wrap ? SCROLL_REDRAW : 2141 SCROLL_PAN_REDRAW; 2142 } else { 2143 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2144 p->scrollmode = SCROLL_MOVE; 2145 else 2146 p->scrollmode = SCROLL_REDRAW; 2147 } 2148 } 2149 2150 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2151 unsigned int height, unsigned int user) 2152 { 2153 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2154 struct fbcon_ops *ops = info->fbcon_par; 2155 struct display *p = &fb_display[vc->vc_num]; 2156 struct fb_var_screeninfo var = info->var; 2157 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2158 2159 virt_w = FBCON_SWAP(ops->rotate, width, height); 2160 virt_h = FBCON_SWAP(ops->rotate, height, width); 2161 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2162 vc->vc_font.height); 2163 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2164 vc->vc_font.width); 2165 var.xres = virt_w * virt_fw; 2166 var.yres = virt_h * virt_fh; 2167 x_diff = info->var.xres - var.xres; 2168 y_diff = info->var.yres - var.yres; 2169 if (x_diff < 0 || x_diff > virt_fw || 2170 y_diff < 0 || y_diff > virt_fh) { 2171 const struct fb_videomode *mode; 2172 2173 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2174 mode = fb_find_best_mode(&var, &info->modelist); 2175 if (mode == NULL) 2176 return -EINVAL; 2177 display_to_var(&var, p); 2178 fb_videomode_to_var(&var, mode); 2179 2180 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2181 return -EINVAL; 2182 2183 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2184 if (con_is_visible(vc)) { 2185 var.activate = FB_ACTIVATE_NOW | 2186 FB_ACTIVATE_FORCE; 2187 fb_set_var(info, &var); 2188 } 2189 var_to_display(p, &info->var, info); 2190 ops->var = info->var; 2191 } 2192 updatescrollmode(p, info, vc); 2193 return 0; 2194 } 2195 2196 static int fbcon_switch(struct vc_data *vc) 2197 { 2198 struct fb_info *info, *old_info = NULL; 2199 struct fbcon_ops *ops; 2200 struct display *p = &fb_display[vc->vc_num]; 2201 struct fb_var_screeninfo var; 2202 int i, ret, prev_console, charcnt = 256; 2203 2204 info = registered_fb[con2fb_map[vc->vc_num]]; 2205 ops = info->fbcon_par; 2206 2207 if (softback_top) { 2208 if (softback_lines) 2209 fbcon_set_origin(vc); 2210 softback_top = softback_curr = softback_in = softback_buf; 2211 softback_lines = 0; 2212 fbcon_update_softback(vc); 2213 } 2214 2215 if (logo_shown >= 0) { 2216 struct vc_data *conp2 = vc_cons[logo_shown].d; 2217 2218 if (conp2->vc_top == logo_lines 2219 && conp2->vc_bottom == conp2->vc_rows) 2220 conp2->vc_top = 0; 2221 logo_shown = FBCON_LOGO_CANSHOW; 2222 } 2223 2224 prev_console = ops->currcon; 2225 if (prev_console != -1) 2226 old_info = registered_fb[con2fb_map[prev_console]]; 2227 /* 2228 * FIXME: If we have multiple fbdev's loaded, we need to 2229 * update all info->currcon. Perhaps, we can place this 2230 * in a centralized structure, but this might break some 2231 * drivers. 2232 * 2233 * info->currcon = vc->vc_num; 2234 */ 2235 for_each_registered_fb(i) { 2236 if (registered_fb[i]->fbcon_par) { 2237 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2238 2239 o->currcon = vc->vc_num; 2240 } 2241 } 2242 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2243 display_to_var(&var, p); 2244 var.activate = FB_ACTIVATE_NOW; 2245 2246 /* 2247 * make sure we don't unnecessarily trip the memcmp() 2248 * in fb_set_var() 2249 */ 2250 info->var.activate = var.activate; 2251 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2252 fb_set_var(info, &var); 2253 ops->var = info->var; 2254 2255 if (old_info != NULL && (old_info != info || 2256 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2257 if (info->fbops->fb_set_par) { 2258 ret = info->fbops->fb_set_par(info); 2259 2260 if (ret) 2261 printk(KERN_ERR "fbcon_switch: detected " 2262 "unhandled fb_set_par error, " 2263 "error code %d\n", ret); 2264 } 2265 2266 if (old_info != info) 2267 fbcon_del_cursor_timer(old_info); 2268 } 2269 2270 if (fbcon_is_inactive(vc, info) || 2271 ops->blank_state != FB_BLANK_UNBLANK) 2272 fbcon_del_cursor_timer(info); 2273 else 2274 fbcon_add_cursor_timer(info); 2275 2276 set_blitting_type(vc, info); 2277 ops->cursor_reset = 1; 2278 2279 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2280 ops->rotate = FB_ROTATE_UR; 2281 set_blitting_type(vc, info); 2282 } 2283 2284 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2285 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2286 2287 if (p->userfont) 2288 charcnt = FNTCHARCNT(vc->vc_font.data); 2289 2290 if (charcnt > 256) 2291 vc->vc_complement_mask <<= 1; 2292 2293 updatescrollmode(p, info, vc); 2294 2295 switch (p->scrollmode) { 2296 case SCROLL_WRAP_MOVE: 2297 scrollback_phys_max = p->vrows - vc->vc_rows; 2298 break; 2299 case SCROLL_PAN_MOVE: 2300 case SCROLL_PAN_REDRAW: 2301 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2302 if (scrollback_phys_max < 0) 2303 scrollback_phys_max = 0; 2304 break; 2305 default: 2306 scrollback_phys_max = 0; 2307 break; 2308 } 2309 2310 scrollback_max = 0; 2311 scrollback_current = 0; 2312 2313 if (!fbcon_is_inactive(vc, info)) { 2314 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2315 ops->update_start(info); 2316 } 2317 2318 fbcon_set_palette(vc, color_table); 2319 fbcon_clear_margins(vc, 0); 2320 2321 if (logo_shown == FBCON_LOGO_DRAW) { 2322 2323 logo_shown = fg_console; 2324 /* This is protected above by initmem_freed */ 2325 fb_show_logo(info, ops->rotate); 2326 update_region(vc, 2327 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2328 vc->vc_size_row * (vc->vc_bottom - 2329 vc->vc_top) / 2); 2330 return 0; 2331 } 2332 return 1; 2333 } 2334 2335 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2336 int blank) 2337 { 2338 struct fb_event event; 2339 2340 if (blank) { 2341 unsigned short charmask = vc->vc_hi_font_mask ? 2342 0x1ff : 0xff; 2343 unsigned short oldc; 2344 2345 oldc = vc->vc_video_erase_char; 2346 vc->vc_video_erase_char &= charmask; 2347 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2348 vc->vc_video_erase_char = oldc; 2349 } 2350 2351 2352 if (!lock_fb_info(info)) 2353 return; 2354 event.info = info; 2355 event.data = ␣ 2356 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event); 2357 unlock_fb_info(info); 2358 } 2359 2360 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2361 { 2362 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2363 struct fbcon_ops *ops = info->fbcon_par; 2364 2365 if (mode_switch) { 2366 struct fb_var_screeninfo var = info->var; 2367 2368 ops->graphics = 1; 2369 2370 if (!blank) { 2371 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; 2372 fb_set_var(info, &var); 2373 ops->graphics = 0; 2374 ops->var = info->var; 2375 } 2376 } 2377 2378 if (!fbcon_is_inactive(vc, info)) { 2379 if (ops->blank_state != blank) { 2380 ops->blank_state = blank; 2381 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2382 ops->cursor_flash = (!blank); 2383 2384 if (!(info->flags & FBINFO_MISC_USEREVENT)) 2385 if (fb_blank(info, blank)) 2386 fbcon_generic_blank(vc, info, blank); 2387 } 2388 2389 if (!blank) 2390 update_screen(vc); 2391 } 2392 2393 if (mode_switch || fbcon_is_inactive(vc, info) || 2394 ops->blank_state != FB_BLANK_UNBLANK) 2395 fbcon_del_cursor_timer(info); 2396 else 2397 fbcon_add_cursor_timer(info); 2398 2399 return 0; 2400 } 2401 2402 static int fbcon_debug_enter(struct vc_data *vc) 2403 { 2404 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2405 struct fbcon_ops *ops = info->fbcon_par; 2406 2407 ops->save_graphics = ops->graphics; 2408 ops->graphics = 0; 2409 if (info->fbops->fb_debug_enter) 2410 info->fbops->fb_debug_enter(info); 2411 fbcon_set_palette(vc, color_table); 2412 return 0; 2413 } 2414 2415 static int fbcon_debug_leave(struct vc_data *vc) 2416 { 2417 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2418 struct fbcon_ops *ops = info->fbcon_par; 2419 2420 ops->graphics = ops->save_graphics; 2421 if (info->fbops->fb_debug_leave) 2422 info->fbops->fb_debug_leave(info); 2423 return 0; 2424 } 2425 2426 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2427 { 2428 u8 *fontdata = vc->vc_font.data; 2429 u8 *data = font->data; 2430 int i, j; 2431 2432 font->width = vc->vc_font.width; 2433 font->height = vc->vc_font.height; 2434 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2435 if (!font->data) 2436 return 0; 2437 2438 if (font->width <= 8) { 2439 j = vc->vc_font.height; 2440 for (i = 0; i < font->charcount; i++) { 2441 memcpy(data, fontdata, j); 2442 memset(data + j, 0, 32 - j); 2443 data += 32; 2444 fontdata += j; 2445 } 2446 } else if (font->width <= 16) { 2447 j = vc->vc_font.height * 2; 2448 for (i = 0; i < font->charcount; i++) { 2449 memcpy(data, fontdata, j); 2450 memset(data + j, 0, 64 - j); 2451 data += 64; 2452 fontdata += j; 2453 } 2454 } else if (font->width <= 24) { 2455 for (i = 0; i < font->charcount; i++) { 2456 for (j = 0; j < vc->vc_font.height; j++) { 2457 *data++ = fontdata[0]; 2458 *data++ = fontdata[1]; 2459 *data++ = fontdata[2]; 2460 fontdata += sizeof(u32); 2461 } 2462 memset(data, 0, 3 * (32 - j)); 2463 data += 3 * (32 - j); 2464 } 2465 } else { 2466 j = vc->vc_font.height * 4; 2467 for (i = 0; i < font->charcount; i++) { 2468 memcpy(data, fontdata, j); 2469 memset(data + j, 0, 128 - j); 2470 data += 128; 2471 fontdata += j; 2472 } 2473 } 2474 return 0; 2475 } 2476 2477 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2478 static void set_vc_hi_font(struct vc_data *vc, bool set) 2479 { 2480 if (!set) { 2481 vc->vc_hi_font_mask = 0; 2482 if (vc->vc_can_do_color) { 2483 vc->vc_complement_mask >>= 1; 2484 vc->vc_s_complement_mask >>= 1; 2485 } 2486 2487 /* ++Edmund: reorder the attribute bits */ 2488 if (vc->vc_can_do_color) { 2489 unsigned short *cp = 2490 (unsigned short *) vc->vc_origin; 2491 int count = vc->vc_screenbuf_size / 2; 2492 unsigned short c; 2493 for (; count > 0; count--, cp++) { 2494 c = scr_readw(cp); 2495 scr_writew(((c & 0xfe00) >> 1) | 2496 (c & 0xff), cp); 2497 } 2498 c = vc->vc_video_erase_char; 2499 vc->vc_video_erase_char = 2500 ((c & 0xfe00) >> 1) | (c & 0xff); 2501 vc->vc_attr >>= 1; 2502 } 2503 } else { 2504 vc->vc_hi_font_mask = 0x100; 2505 if (vc->vc_can_do_color) { 2506 vc->vc_complement_mask <<= 1; 2507 vc->vc_s_complement_mask <<= 1; 2508 } 2509 2510 /* ++Edmund: reorder the attribute bits */ 2511 { 2512 unsigned short *cp = 2513 (unsigned short *) vc->vc_origin; 2514 int count = vc->vc_screenbuf_size / 2; 2515 unsigned short c; 2516 for (; count > 0; count--, cp++) { 2517 unsigned short newc; 2518 c = scr_readw(cp); 2519 if (vc->vc_can_do_color) 2520 newc = 2521 ((c & 0xff00) << 1) | (c & 2522 0xff); 2523 else 2524 newc = c & ~0x100; 2525 scr_writew(newc, cp); 2526 } 2527 c = vc->vc_video_erase_char; 2528 if (vc->vc_can_do_color) { 2529 vc->vc_video_erase_char = 2530 ((c & 0xff00) << 1) | (c & 0xff); 2531 vc->vc_attr <<= 1; 2532 } else 2533 vc->vc_video_erase_char = c & ~0x100; 2534 } 2535 } 2536 } 2537 2538 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2539 const u8 * data, int userfont) 2540 { 2541 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2542 struct fbcon_ops *ops = info->fbcon_par; 2543 struct display *p = &fb_display[vc->vc_num]; 2544 int resize; 2545 int cnt; 2546 char *old_data = NULL; 2547 2548 if (con_is_visible(vc) && softback_lines) 2549 fbcon_set_origin(vc); 2550 2551 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2552 if (p->userfont) 2553 old_data = vc->vc_font.data; 2554 if (userfont) 2555 cnt = FNTCHARCNT(data); 2556 else 2557 cnt = 256; 2558 vc->vc_font.data = (void *)(p->fontdata = data); 2559 if ((p->userfont = userfont)) 2560 REFCOUNT(data)++; 2561 vc->vc_font.width = w; 2562 vc->vc_font.height = h; 2563 if (vc->vc_hi_font_mask && cnt == 256) 2564 set_vc_hi_font(vc, false); 2565 else if (!vc->vc_hi_font_mask && cnt == 512) 2566 set_vc_hi_font(vc, true); 2567 2568 if (resize) { 2569 int cols, rows; 2570 2571 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2572 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2573 cols /= w; 2574 rows /= h; 2575 vc_resize(vc, cols, rows); 2576 if (con_is_visible(vc) && softback_buf) 2577 fbcon_update_softback(vc); 2578 } else if (con_is_visible(vc) 2579 && vc->vc_mode == KD_TEXT) { 2580 fbcon_clear_margins(vc, 0); 2581 update_screen(vc); 2582 } 2583 2584 if (old_data && (--REFCOUNT(old_data) == 0)) 2585 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2586 return 0; 2587 } 2588 2589 static int fbcon_copy_font(struct vc_data *vc, int con) 2590 { 2591 struct display *od = &fb_display[con]; 2592 struct console_font *f = &vc->vc_font; 2593 2594 if (od->fontdata == f->data) 2595 return 0; /* already the same font... */ 2596 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2597 } 2598 2599 /* 2600 * User asked to set font; we are guaranteed that 2601 * a) width and height are in range 1..32 2602 * b) charcount does not exceed 512 2603 * but lets not assume that, since someone might someday want to use larger 2604 * fonts. And charcount of 512 is small for unicode support. 2605 * 2606 * However, user space gives the font in 32 rows , regardless of 2607 * actual font height. So a new API is needed if support for larger fonts 2608 * is ever implemented. 2609 */ 2610 2611 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, 2612 unsigned int flags) 2613 { 2614 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2615 unsigned charcount = font->charcount; 2616 int w = font->width; 2617 int h = font->height; 2618 int size; 2619 int i, csum; 2620 u8 *new_data, *data = font->data; 2621 int pitch = (font->width+7) >> 3; 2622 2623 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2624 * If not this check should be changed to charcount < 256 */ 2625 if (charcount != 256 && charcount != 512) 2626 return -EINVAL; 2627 2628 /* Make sure drawing engine can handle the font */ 2629 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2630 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2631 return -EINVAL; 2632 2633 /* Make sure driver can handle the font length */ 2634 if (fbcon_invalid_charcount(info, charcount)) 2635 return -EINVAL; 2636 2637 size = h * pitch * charcount; 2638 2639 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2640 2641 if (!new_data) 2642 return -ENOMEM; 2643 2644 new_data += FONT_EXTRA_WORDS * sizeof(int); 2645 FNTSIZE(new_data) = size; 2646 FNTCHARCNT(new_data) = charcount; 2647 REFCOUNT(new_data) = 0; /* usage counter */ 2648 for (i=0; i< charcount; i++) { 2649 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2650 } 2651 2652 /* Since linux has a nice crc32 function use it for counting font 2653 * checksums. */ 2654 csum = crc32(0, new_data, size); 2655 2656 FNTSUM(new_data) = csum; 2657 /* Check if the same font is on some other console already */ 2658 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2659 struct vc_data *tmp = vc_cons[i].d; 2660 2661 if (fb_display[i].userfont && 2662 fb_display[i].fontdata && 2663 FNTSUM(fb_display[i].fontdata) == csum && 2664 FNTSIZE(fb_display[i].fontdata) == size && 2665 tmp->vc_font.width == w && 2666 !memcmp(fb_display[i].fontdata, new_data, size)) { 2667 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2668 new_data = (u8 *)fb_display[i].fontdata; 2669 break; 2670 } 2671 } 2672 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2673 } 2674 2675 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2676 { 2677 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2678 const struct font_desc *f; 2679 2680 if (!name) 2681 f = get_default_font(info->var.xres, info->var.yres, 2682 info->pixmap.blit_x, info->pixmap.blit_y); 2683 else if (!(f = find_font(name))) 2684 return -ENOENT; 2685 2686 font->width = f->width; 2687 font->height = f->height; 2688 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2689 } 2690 2691 static u16 palette_red[16]; 2692 static u16 palette_green[16]; 2693 static u16 palette_blue[16]; 2694 2695 static struct fb_cmap palette_cmap = { 2696 0, 16, palette_red, palette_green, palette_blue, NULL 2697 }; 2698 2699 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2700 { 2701 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2702 int i, j, k, depth; 2703 u8 val; 2704 2705 if (fbcon_is_inactive(vc, info)) 2706 return; 2707 2708 if (!con_is_visible(vc)) 2709 return; 2710 2711 depth = fb_get_color_depth(&info->var, &info->fix); 2712 if (depth > 3) { 2713 for (i = j = 0; i < 16; i++) { 2714 k = table[i]; 2715 val = vc->vc_palette[j++]; 2716 palette_red[k] = (val << 8) | val; 2717 val = vc->vc_palette[j++]; 2718 palette_green[k] = (val << 8) | val; 2719 val = vc->vc_palette[j++]; 2720 palette_blue[k] = (val << 8) | val; 2721 } 2722 palette_cmap.len = 16; 2723 palette_cmap.start = 0; 2724 /* 2725 * If framebuffer is capable of less than 16 colors, 2726 * use default palette of fbcon. 2727 */ 2728 } else 2729 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2730 2731 fb_set_cmap(&palette_cmap, info); 2732 } 2733 2734 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) 2735 { 2736 unsigned long p; 2737 int line; 2738 2739 if (vc->vc_num != fg_console || !softback_lines) 2740 return (u16 *) (vc->vc_origin + offset); 2741 line = offset / vc->vc_size_row; 2742 if (line >= softback_lines) 2743 return (u16 *) (vc->vc_origin + offset - 2744 softback_lines * vc->vc_size_row); 2745 p = softback_curr + offset; 2746 if (p >= softback_end) 2747 p += softback_buf - softback_end; 2748 return (u16 *) p; 2749 } 2750 2751 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2752 int *px, int *py) 2753 { 2754 unsigned long ret; 2755 int x, y; 2756 2757 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2758 unsigned long offset = (pos - vc->vc_origin) / 2; 2759 2760 x = offset % vc->vc_cols; 2761 y = offset / vc->vc_cols; 2762 if (vc->vc_num == fg_console) 2763 y += softback_lines; 2764 ret = pos + (vc->vc_cols - x) * 2; 2765 } else if (vc->vc_num == fg_console && softback_lines) { 2766 unsigned long offset = pos - softback_curr; 2767 2768 if (pos < softback_curr) 2769 offset += softback_end - softback_buf; 2770 offset /= 2; 2771 x = offset % vc->vc_cols; 2772 y = offset / vc->vc_cols; 2773 ret = pos + (vc->vc_cols - x) * 2; 2774 if (ret == softback_end) 2775 ret = softback_buf; 2776 if (ret == softback_in) 2777 ret = vc->vc_origin; 2778 } else { 2779 /* Should not happen */ 2780 x = y = 0; 2781 ret = vc->vc_origin; 2782 } 2783 if (px) 2784 *px = x; 2785 if (py) 2786 *py = y; 2787 return ret; 2788 } 2789 2790 /* As we might be inside of softback, we may work with non-contiguous buffer, 2791 that's why we have to use a separate routine. */ 2792 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2793 { 2794 while (cnt--) { 2795 u16 a = scr_readw(p); 2796 if (!vc->vc_can_do_color) 2797 a ^= 0x0800; 2798 else if (vc->vc_hi_font_mask == 0x100) 2799 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2800 (((a) & 0x0e00) << 4); 2801 else 2802 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2803 (((a) & 0x0700) << 4); 2804 scr_writew(a, p++); 2805 if (p == (u16 *) softback_end) 2806 p = (u16 *) softback_buf; 2807 if (p == (u16 *) softback_in) 2808 p = (u16 *) vc->vc_origin; 2809 } 2810 } 2811 2812 static void fbcon_scrolldelta(struct vc_data *vc, int lines) 2813 { 2814 struct fb_info *info = registered_fb[con2fb_map[fg_console]]; 2815 struct fbcon_ops *ops = info->fbcon_par; 2816 struct display *disp = &fb_display[fg_console]; 2817 int offset, limit, scrollback_old; 2818 2819 if (softback_top) { 2820 if (vc->vc_num != fg_console) 2821 return; 2822 if (vc->vc_mode != KD_TEXT || !lines) 2823 return; 2824 if (logo_shown >= 0) { 2825 struct vc_data *conp2 = vc_cons[logo_shown].d; 2826 2827 if (conp2->vc_top == logo_lines 2828 && conp2->vc_bottom == conp2->vc_rows) 2829 conp2->vc_top = 0; 2830 if (logo_shown == vc->vc_num) { 2831 unsigned long p, q; 2832 int i; 2833 2834 p = softback_in; 2835 q = vc->vc_origin + 2836 logo_lines * vc->vc_size_row; 2837 for (i = 0; i < logo_lines; i++) { 2838 if (p == softback_top) 2839 break; 2840 if (p == softback_buf) 2841 p = softback_end; 2842 p -= vc->vc_size_row; 2843 q -= vc->vc_size_row; 2844 scr_memcpyw((u16 *) q, (u16 *) p, 2845 vc->vc_size_row); 2846 } 2847 softback_in = softback_curr = p; 2848 update_region(vc, vc->vc_origin, 2849 logo_lines * vc->vc_cols); 2850 } 2851 logo_shown = FBCON_LOGO_CANSHOW; 2852 } 2853 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); 2854 fbcon_redraw_softback(vc, disp, lines); 2855 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); 2856 return; 2857 } 2858 2859 if (!scrollback_phys_max) 2860 return; 2861 2862 scrollback_old = scrollback_current; 2863 scrollback_current -= lines; 2864 if (scrollback_current < 0) 2865 scrollback_current = 0; 2866 else if (scrollback_current > scrollback_max) 2867 scrollback_current = scrollback_max; 2868 if (scrollback_current == scrollback_old) 2869 return; 2870 2871 if (fbcon_is_inactive(vc, info)) 2872 return; 2873 2874 fbcon_cursor(vc, CM_ERASE); 2875 2876 offset = disp->yscroll - scrollback_current; 2877 limit = disp->vrows; 2878 switch (disp->scrollmode) { 2879 case SCROLL_WRAP_MOVE: 2880 info->var.vmode |= FB_VMODE_YWRAP; 2881 break; 2882 case SCROLL_PAN_MOVE: 2883 case SCROLL_PAN_REDRAW: 2884 limit -= vc->vc_rows; 2885 info->var.vmode &= ~FB_VMODE_YWRAP; 2886 break; 2887 } 2888 if (offset < 0) 2889 offset += limit; 2890 else if (offset >= limit) 2891 offset -= limit; 2892 2893 ops->var.xoffset = 0; 2894 ops->var.yoffset = offset * vc->vc_font.height; 2895 ops->update_start(info); 2896 2897 if (!scrollback_current) 2898 fbcon_cursor(vc, CM_DRAW); 2899 } 2900 2901 static int fbcon_set_origin(struct vc_data *vc) 2902 { 2903 if (softback_lines) 2904 fbcon_scrolldelta(vc, softback_lines); 2905 return 0; 2906 } 2907 2908 static void fbcon_suspended(struct fb_info *info) 2909 { 2910 struct vc_data *vc = NULL; 2911 struct fbcon_ops *ops = info->fbcon_par; 2912 2913 if (!ops || ops->currcon < 0) 2914 return; 2915 vc = vc_cons[ops->currcon].d; 2916 2917 /* Clear cursor, restore saved data */ 2918 fbcon_cursor(vc, CM_ERASE); 2919 } 2920 2921 static void fbcon_resumed(struct fb_info *info) 2922 { 2923 struct vc_data *vc; 2924 struct fbcon_ops *ops = info->fbcon_par; 2925 2926 if (!ops || ops->currcon < 0) 2927 return; 2928 vc = vc_cons[ops->currcon].d; 2929 2930 update_screen(vc); 2931 } 2932 2933 static void fbcon_modechanged(struct fb_info *info) 2934 { 2935 struct fbcon_ops *ops = info->fbcon_par; 2936 struct vc_data *vc; 2937 struct display *p; 2938 int rows, cols; 2939 2940 if (!ops || ops->currcon < 0) 2941 return; 2942 vc = vc_cons[ops->currcon].d; 2943 if (vc->vc_mode != KD_TEXT || 2944 registered_fb[con2fb_map[ops->currcon]] != info) 2945 return; 2946 2947 p = &fb_display[vc->vc_num]; 2948 set_blitting_type(vc, info); 2949 2950 if (con_is_visible(vc)) { 2951 var_to_display(p, &info->var, info); 2952 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2953 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2954 cols /= vc->vc_font.width; 2955 rows /= vc->vc_font.height; 2956 vc_resize(vc, cols, rows); 2957 updatescrollmode(p, info, vc); 2958 scrollback_max = 0; 2959 scrollback_current = 0; 2960 2961 if (!fbcon_is_inactive(vc, info)) { 2962 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2963 ops->update_start(info); 2964 } 2965 2966 fbcon_set_palette(vc, color_table); 2967 update_screen(vc); 2968 if (softback_buf) 2969 fbcon_update_softback(vc); 2970 } 2971 } 2972 2973 static void fbcon_set_all_vcs(struct fb_info *info) 2974 { 2975 struct fbcon_ops *ops = info->fbcon_par; 2976 struct vc_data *vc; 2977 struct display *p; 2978 int i, rows, cols, fg = -1; 2979 2980 if (!ops || ops->currcon < 0) 2981 return; 2982 2983 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2984 vc = vc_cons[i].d; 2985 if (!vc || vc->vc_mode != KD_TEXT || 2986 registered_fb[con2fb_map[i]] != info) 2987 continue; 2988 2989 if (con_is_visible(vc)) { 2990 fg = i; 2991 continue; 2992 } 2993 2994 p = &fb_display[vc->vc_num]; 2995 set_blitting_type(vc, info); 2996 var_to_display(p, &info->var, info); 2997 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2998 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2999 cols /= vc->vc_font.width; 3000 rows /= vc->vc_font.height; 3001 vc_resize(vc, cols, rows); 3002 } 3003 3004 if (fg != -1) 3005 fbcon_modechanged(info); 3006 } 3007 3008 static int fbcon_mode_deleted(struct fb_info *info, 3009 struct fb_videomode *mode) 3010 { 3011 struct fb_info *fb_info; 3012 struct display *p; 3013 int i, j, found = 0; 3014 3015 /* before deletion, ensure that mode is not in use */ 3016 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3017 j = con2fb_map[i]; 3018 if (j == -1) 3019 continue; 3020 fb_info = registered_fb[j]; 3021 if (fb_info != info) 3022 continue; 3023 p = &fb_display[i]; 3024 if (!p || !p->mode) 3025 continue; 3026 if (fb_mode_is_equal(p->mode, mode)) { 3027 found = 1; 3028 break; 3029 } 3030 } 3031 return found; 3032 } 3033 3034 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 3035 static int fbcon_unbind(void) 3036 { 3037 int ret; 3038 3039 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 3040 fbcon_is_default); 3041 3042 if (!ret) 3043 fbcon_has_console_bind = 0; 3044 3045 return ret; 3046 } 3047 #else 3048 static inline int fbcon_unbind(void) 3049 { 3050 return -EINVAL; 3051 } 3052 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 3053 3054 /* called with console_lock held */ 3055 static int fbcon_fb_unbind(int idx) 3056 { 3057 int i, new_idx = -1, ret = 0; 3058 3059 WARN_CONSOLE_UNLOCKED(); 3060 3061 if (!fbcon_has_console_bind) 3062 return 0; 3063 3064 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3065 if (con2fb_map[i] != idx && 3066 con2fb_map[i] != -1) { 3067 new_idx = i; 3068 break; 3069 } 3070 } 3071 3072 if (new_idx != -1) { 3073 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3074 if (con2fb_map[i] == idx) 3075 set_con2fb_map(i, new_idx, 0); 3076 } 3077 } else { 3078 struct fb_info *info = registered_fb[idx]; 3079 3080 /* This is sort of like set_con2fb_map, except it maps 3081 * the consoles to no device and then releases the 3082 * oldinfo to free memory and cancel the cursor blink 3083 * timer. I can imagine this just becoming part of 3084 * set_con2fb_map where new_idx is -1 3085 */ 3086 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3087 if (con2fb_map[i] == idx) { 3088 con2fb_map[i] = -1; 3089 if (!search_fb_in_map(idx)) { 3090 ret = con2fb_release_oldinfo(vc_cons[i].d, 3091 info, NULL, i, 3092 idx, 0); 3093 if (ret) { 3094 con2fb_map[i] = idx; 3095 return ret; 3096 } 3097 } 3098 } 3099 } 3100 ret = fbcon_unbind(); 3101 } 3102 3103 return ret; 3104 } 3105 3106 /* called with console_lock held */ 3107 static int fbcon_fb_unregistered(struct fb_info *info) 3108 { 3109 int i, idx; 3110 3111 WARN_CONSOLE_UNLOCKED(); 3112 3113 if (deferred_takeover) 3114 return 0; 3115 3116 idx = info->node; 3117 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3118 if (con2fb_map[i] == idx) 3119 con2fb_map[i] = -1; 3120 } 3121 3122 if (idx == info_idx) { 3123 info_idx = -1; 3124 3125 for_each_registered_fb(i) { 3126 info_idx = i; 3127 break; 3128 } 3129 } 3130 3131 if (info_idx != -1) { 3132 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3133 if (con2fb_map[i] == -1) 3134 con2fb_map[i] = info_idx; 3135 } 3136 } 3137 3138 if (primary_device == idx) 3139 primary_device = -1; 3140 3141 if (!num_registered_fb) 3142 do_unregister_con_driver(&fb_con); 3143 3144 return 0; 3145 } 3146 3147 /* called with console_lock held */ 3148 static void fbcon_remap_all(int idx) 3149 { 3150 int i; 3151 3152 WARN_CONSOLE_UNLOCKED(); 3153 3154 if (deferred_takeover) { 3155 for (i = first_fb_vc; i <= last_fb_vc; i++) 3156 con2fb_map_boot[i] = idx; 3157 fbcon_map_override(); 3158 return; 3159 } 3160 3161 for (i = first_fb_vc; i <= last_fb_vc; i++) 3162 set_con2fb_map(i, idx, 0); 3163 3164 if (con_is_bound(&fb_con)) { 3165 printk(KERN_INFO "fbcon: Remapping primary device, " 3166 "fb%i, to tty %i-%i\n", idx, 3167 first_fb_vc + 1, last_fb_vc + 1); 3168 info_idx = idx; 3169 } 3170 } 3171 3172 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 3173 static void fbcon_select_primary(struct fb_info *info) 3174 { 3175 if (!map_override && primary_device == -1 && 3176 fb_is_primary_device(info)) { 3177 int i; 3178 3179 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 3180 info->fix.id, info->node); 3181 primary_device = info->node; 3182 3183 for (i = first_fb_vc; i <= last_fb_vc; i++) 3184 con2fb_map_boot[i] = primary_device; 3185 3186 if (con_is_bound(&fb_con)) { 3187 printk(KERN_INFO "fbcon: Remapping primary device, " 3188 "fb%i, to tty %i-%i\n", info->node, 3189 first_fb_vc + 1, last_fb_vc + 1); 3190 info_idx = primary_device; 3191 } 3192 } 3193 3194 } 3195 #else 3196 static inline void fbcon_select_primary(struct fb_info *info) 3197 { 3198 return; 3199 } 3200 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 3201 3202 /* called with console_lock held */ 3203 static int fbcon_fb_registered(struct fb_info *info) 3204 { 3205 int ret = 0, i, idx; 3206 3207 WARN_CONSOLE_UNLOCKED(); 3208 3209 idx = info->node; 3210 fbcon_select_primary(info); 3211 3212 if (deferred_takeover) { 3213 pr_info("fbcon: Deferring console take-over\n"); 3214 return 0; 3215 } 3216 3217 if (info_idx == -1) { 3218 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3219 if (con2fb_map_boot[i] == idx) { 3220 info_idx = idx; 3221 break; 3222 } 3223 } 3224 3225 if (info_idx != -1) 3226 ret = do_fbcon_takeover(1); 3227 } else { 3228 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3229 if (con2fb_map_boot[i] == idx) 3230 set_con2fb_map(i, idx, 0); 3231 } 3232 } 3233 3234 return ret; 3235 } 3236 3237 static void fbcon_fb_blanked(struct fb_info *info, int blank) 3238 { 3239 struct fbcon_ops *ops = info->fbcon_par; 3240 struct vc_data *vc; 3241 3242 if (!ops || ops->currcon < 0) 3243 return; 3244 3245 vc = vc_cons[ops->currcon].d; 3246 if (vc->vc_mode != KD_TEXT || 3247 registered_fb[con2fb_map[ops->currcon]] != info) 3248 return; 3249 3250 if (con_is_visible(vc)) { 3251 if (blank) 3252 do_blank_screen(0); 3253 else 3254 do_unblank_screen(0); 3255 } 3256 ops->blank_state = blank; 3257 } 3258 3259 static void fbcon_new_modelist(struct fb_info *info) 3260 { 3261 int i; 3262 struct vc_data *vc; 3263 struct fb_var_screeninfo var; 3264 const struct fb_videomode *mode; 3265 3266 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3267 if (registered_fb[con2fb_map[i]] != info) 3268 continue; 3269 if (!fb_display[i].mode) 3270 continue; 3271 vc = vc_cons[i].d; 3272 display_to_var(&var, &fb_display[i]); 3273 mode = fb_find_nearest_mode(fb_display[i].mode, 3274 &info->modelist); 3275 fb_videomode_to_var(&var, mode); 3276 fbcon_set_disp(info, &var, vc->vc_num); 3277 } 3278 } 3279 3280 static void fbcon_get_requirement(struct fb_info *info, 3281 struct fb_blit_caps *caps) 3282 { 3283 struct vc_data *vc; 3284 struct display *p; 3285 3286 if (caps->flags) { 3287 int i, charcnt; 3288 3289 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3290 vc = vc_cons[i].d; 3291 if (vc && vc->vc_mode == KD_TEXT && 3292 info->node == con2fb_map[i]) { 3293 p = &fb_display[i]; 3294 caps->x |= 1 << (vc->vc_font.width - 1); 3295 caps->y |= 1 << (vc->vc_font.height - 1); 3296 charcnt = (p->userfont) ? 3297 FNTCHARCNT(p->fontdata) : 256; 3298 if (caps->len < charcnt) 3299 caps->len = charcnt; 3300 } 3301 } 3302 } else { 3303 vc = vc_cons[fg_console].d; 3304 3305 if (vc && vc->vc_mode == KD_TEXT && 3306 info->node == con2fb_map[fg_console]) { 3307 p = &fb_display[fg_console]; 3308 caps->x = 1 << (vc->vc_font.width - 1); 3309 caps->y = 1 << (vc->vc_font.height - 1); 3310 caps->len = (p->userfont) ? 3311 FNTCHARCNT(p->fontdata) : 256; 3312 } 3313 } 3314 } 3315 3316 static int fbcon_event_notify(struct notifier_block *self, 3317 unsigned long action, void *data) 3318 { 3319 struct fb_event *event = data; 3320 struct fb_info *info = event->info; 3321 struct fb_videomode *mode; 3322 struct fb_con2fbmap *con2fb; 3323 struct fb_blit_caps *caps; 3324 int idx, ret = 0; 3325 3326 /* 3327 * ignore all events except driver registration and deregistration 3328 * if fbcon is not active 3329 */ 3330 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED || 3331 action == FB_EVENT_FB_UNREGISTERED)) 3332 goto done; 3333 3334 switch(action) { 3335 case FB_EVENT_SUSPEND: 3336 fbcon_suspended(info); 3337 break; 3338 case FB_EVENT_RESUME: 3339 fbcon_resumed(info); 3340 break; 3341 case FB_EVENT_MODE_CHANGE: 3342 fbcon_modechanged(info); 3343 break; 3344 case FB_EVENT_MODE_CHANGE_ALL: 3345 fbcon_set_all_vcs(info); 3346 break; 3347 case FB_EVENT_MODE_DELETE: 3348 mode = event->data; 3349 ret = fbcon_mode_deleted(info, mode); 3350 break; 3351 case FB_EVENT_FB_UNBIND: 3352 idx = info->node; 3353 ret = fbcon_fb_unbind(idx); 3354 break; 3355 case FB_EVENT_FB_REGISTERED: 3356 ret = fbcon_fb_registered(info); 3357 break; 3358 case FB_EVENT_FB_UNREGISTERED: 3359 ret = fbcon_fb_unregistered(info); 3360 break; 3361 case FB_EVENT_SET_CONSOLE_MAP: 3362 /* called with console lock held */ 3363 con2fb = event->data; 3364 ret = set_con2fb_map(con2fb->console - 1, 3365 con2fb->framebuffer, 1); 3366 break; 3367 case FB_EVENT_GET_CONSOLE_MAP: 3368 con2fb = event->data; 3369 con2fb->framebuffer = con2fb_map[con2fb->console - 1]; 3370 break; 3371 case FB_EVENT_BLANK: 3372 fbcon_fb_blanked(info, *(int *)event->data); 3373 break; 3374 case FB_EVENT_NEW_MODELIST: 3375 fbcon_new_modelist(info); 3376 break; 3377 case FB_EVENT_GET_REQ: 3378 caps = event->data; 3379 fbcon_get_requirement(info, caps); 3380 break; 3381 case FB_EVENT_REMAP_ALL_CONSOLE: 3382 idx = info->node; 3383 fbcon_remap_all(idx); 3384 break; 3385 } 3386 done: 3387 return ret; 3388 } 3389 3390 /* 3391 * The console `switch' structure for the frame buffer based console 3392 */ 3393 3394 static const struct consw fb_con = { 3395 .owner = THIS_MODULE, 3396 .con_startup = fbcon_startup, 3397 .con_init = fbcon_init, 3398 .con_deinit = fbcon_deinit, 3399 .con_clear = fbcon_clear, 3400 .con_putc = fbcon_putc, 3401 .con_putcs = fbcon_putcs, 3402 .con_cursor = fbcon_cursor, 3403 .con_scroll = fbcon_scroll, 3404 .con_switch = fbcon_switch, 3405 .con_blank = fbcon_blank, 3406 .con_font_set = fbcon_set_font, 3407 .con_font_get = fbcon_get_font, 3408 .con_font_default = fbcon_set_def_font, 3409 .con_font_copy = fbcon_copy_font, 3410 .con_set_palette = fbcon_set_palette, 3411 .con_scrolldelta = fbcon_scrolldelta, 3412 .con_set_origin = fbcon_set_origin, 3413 .con_invert_region = fbcon_invert_region, 3414 .con_screen_pos = fbcon_screen_pos, 3415 .con_getxy = fbcon_getxy, 3416 .con_resize = fbcon_resize, 3417 .con_debug_enter = fbcon_debug_enter, 3418 .con_debug_leave = fbcon_debug_leave, 3419 }; 3420 3421 static struct notifier_block fbcon_event_notifier = { 3422 .notifier_call = fbcon_event_notify, 3423 }; 3424 3425 static ssize_t store_rotate(struct device *device, 3426 struct device_attribute *attr, const char *buf, 3427 size_t count) 3428 { 3429 struct fb_info *info; 3430 int rotate, idx; 3431 char **last = NULL; 3432 3433 if (fbcon_has_exited) 3434 return count; 3435 3436 console_lock(); 3437 idx = con2fb_map[fg_console]; 3438 3439 if (idx == -1 || registered_fb[idx] == NULL) 3440 goto err; 3441 3442 info = registered_fb[idx]; 3443 rotate = simple_strtoul(buf, last, 0); 3444 fbcon_rotate(info, rotate); 3445 err: 3446 console_unlock(); 3447 return count; 3448 } 3449 3450 static ssize_t store_rotate_all(struct device *device, 3451 struct device_attribute *attr,const char *buf, 3452 size_t count) 3453 { 3454 struct fb_info *info; 3455 int rotate, idx; 3456 char **last = NULL; 3457 3458 if (fbcon_has_exited) 3459 return count; 3460 3461 console_lock(); 3462 idx = con2fb_map[fg_console]; 3463 3464 if (idx == -1 || registered_fb[idx] == NULL) 3465 goto err; 3466 3467 info = registered_fb[idx]; 3468 rotate = simple_strtoul(buf, last, 0); 3469 fbcon_rotate_all(info, rotate); 3470 err: 3471 console_unlock(); 3472 return count; 3473 } 3474 3475 static ssize_t show_rotate(struct device *device, 3476 struct device_attribute *attr,char *buf) 3477 { 3478 struct fb_info *info; 3479 int rotate = 0, idx; 3480 3481 if (fbcon_has_exited) 3482 return 0; 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 rotate = fbcon_get_rotate(info); 3492 err: 3493 console_unlock(); 3494 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3495 } 3496 3497 static ssize_t show_cursor_blink(struct device *device, 3498 struct device_attribute *attr, char *buf) 3499 { 3500 struct fb_info *info; 3501 struct fbcon_ops *ops; 3502 int idx, blink = -1; 3503 3504 if (fbcon_has_exited) 3505 return 0; 3506 3507 console_lock(); 3508 idx = con2fb_map[fg_console]; 3509 3510 if (idx == -1 || registered_fb[idx] == NULL) 3511 goto err; 3512 3513 info = registered_fb[idx]; 3514 ops = info->fbcon_par; 3515 3516 if (!ops) 3517 goto err; 3518 3519 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3520 err: 3521 console_unlock(); 3522 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3523 } 3524 3525 static ssize_t store_cursor_blink(struct device *device, 3526 struct device_attribute *attr, 3527 const char *buf, size_t count) 3528 { 3529 struct fb_info *info; 3530 int blink, idx; 3531 char **last = NULL; 3532 3533 if (fbcon_has_exited) 3534 return count; 3535 3536 console_lock(); 3537 idx = con2fb_map[fg_console]; 3538 3539 if (idx == -1 || registered_fb[idx] == NULL) 3540 goto err; 3541 3542 info = registered_fb[idx]; 3543 3544 if (!info->fbcon_par) 3545 goto err; 3546 3547 blink = simple_strtoul(buf, last, 0); 3548 3549 if (blink) { 3550 fbcon_cursor_noblink = 0; 3551 fbcon_add_cursor_timer(info); 3552 } else { 3553 fbcon_cursor_noblink = 1; 3554 fbcon_del_cursor_timer(info); 3555 } 3556 3557 err: 3558 console_unlock(); 3559 return count; 3560 } 3561 3562 static struct device_attribute device_attrs[] = { 3563 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3564 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3565 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3566 store_cursor_blink), 3567 }; 3568 3569 static int fbcon_init_device(void) 3570 { 3571 int i, error = 0; 3572 3573 fbcon_has_sysfs = 1; 3574 3575 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3576 error = device_create_file(fbcon_device, &device_attrs[i]); 3577 3578 if (error) 3579 break; 3580 } 3581 3582 if (error) { 3583 while (--i >= 0) 3584 device_remove_file(fbcon_device, &device_attrs[i]); 3585 3586 fbcon_has_sysfs = 0; 3587 } 3588 3589 return 0; 3590 } 3591 3592 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3593 static void fbcon_register_existing_fbs(struct work_struct *work) 3594 { 3595 int i; 3596 3597 console_lock(); 3598 3599 for_each_registered_fb(i) 3600 fbcon_fb_registered(registered_fb[i]); 3601 3602 console_unlock(); 3603 } 3604 3605 static struct notifier_block fbcon_output_nb; 3606 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); 3607 3608 static int fbcon_output_notifier(struct notifier_block *nb, 3609 unsigned long action, void *data) 3610 { 3611 WARN_CONSOLE_UNLOCKED(); 3612 3613 pr_info("fbcon: Taking over console\n"); 3614 3615 dummycon_unregister_output_notifier(&fbcon_output_nb); 3616 deferred_takeover = false; 3617 logo_shown = FBCON_LOGO_DONTSHOW; 3618 3619 /* We may get called in atomic context */ 3620 schedule_work(&fbcon_deferred_takeover_work); 3621 3622 return NOTIFY_OK; 3623 } 3624 #endif 3625 3626 static void fbcon_start(void) 3627 { 3628 WARN_CONSOLE_UNLOCKED(); 3629 3630 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3631 if (conswitchp != &dummy_con) 3632 deferred_takeover = false; 3633 3634 if (deferred_takeover) { 3635 fbcon_output_nb.notifier_call = fbcon_output_notifier; 3636 dummycon_register_output_notifier(&fbcon_output_nb); 3637 return; 3638 } 3639 #endif 3640 3641 if (num_registered_fb) { 3642 int i; 3643 3644 for_each_registered_fb(i) { 3645 info_idx = i; 3646 break; 3647 } 3648 3649 do_fbcon_takeover(0); 3650 } 3651 } 3652 3653 static void fbcon_exit(void) 3654 { 3655 struct fb_info *info; 3656 int i, j, mapped; 3657 3658 if (fbcon_has_exited) 3659 return; 3660 3661 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3662 if (deferred_takeover) { 3663 dummycon_unregister_output_notifier(&fbcon_output_nb); 3664 deferred_takeover = false; 3665 } 3666 #endif 3667 3668 kfree((void *)softback_buf); 3669 softback_buf = 0UL; 3670 3671 for_each_registered_fb(i) { 3672 int pending = 0; 3673 3674 mapped = 0; 3675 info = registered_fb[i]; 3676 3677 if (info->queue.func) 3678 pending = cancel_work_sync(&info->queue); 3679 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3680 "no")); 3681 3682 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3683 if (con2fb_map[j] == i) { 3684 mapped = 1; 3685 break; 3686 } 3687 } 3688 3689 if (mapped) { 3690 if (info->fbops->fb_release) 3691 info->fbops->fb_release(info, 0); 3692 module_put(info->fbops->owner); 3693 3694 if (info->fbcon_par) { 3695 struct fbcon_ops *ops = info->fbcon_par; 3696 3697 fbcon_del_cursor_timer(info); 3698 kfree(ops->cursor_src); 3699 kfree(ops->cursor_state.mask); 3700 kfree(info->fbcon_par); 3701 info->fbcon_par = NULL; 3702 } 3703 3704 if (info->queue.func == fb_flashcursor) 3705 info->queue.func = NULL; 3706 } 3707 } 3708 3709 fbcon_has_exited = 1; 3710 } 3711 3712 void __init fb_console_init(void) 3713 { 3714 int i; 3715 3716 console_lock(); 3717 fb_register_client(&fbcon_event_notifier); 3718 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3719 "fbcon"); 3720 3721 if (IS_ERR(fbcon_device)) { 3722 printk(KERN_WARNING "Unable to create device " 3723 "for fbcon; errno = %ld\n", 3724 PTR_ERR(fbcon_device)); 3725 fbcon_device = NULL; 3726 } else 3727 fbcon_init_device(); 3728 3729 for (i = 0; i < MAX_NR_CONSOLES; i++) 3730 con2fb_map[i] = -1; 3731 3732 fbcon_start(); 3733 console_unlock(); 3734 } 3735 3736 #ifdef MODULE 3737 3738 static void __exit fbcon_deinit_device(void) 3739 { 3740 int i; 3741 3742 if (fbcon_has_sysfs) { 3743 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3744 device_remove_file(fbcon_device, &device_attrs[i]); 3745 3746 fbcon_has_sysfs = 0; 3747 } 3748 } 3749 3750 void __exit fb_console_exit(void) 3751 { 3752 console_lock(); 3753 fb_unregister_client(&fbcon_event_notifier); 3754 fbcon_deinit_device(); 3755 device_destroy(fb_class, MKDEV(0, 0)); 3756 fbcon_exit(); 3757 do_unregister_con_driver(&fb_con); 3758 console_unlock(); 3759 } 3760 #endif 3761