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 if (!strncmp(options, "logo-pos:", 9)) { 515 options += 9; 516 if (!strcmp(options, "center")) 517 fb_center_logo = true; 518 continue; 519 } 520 } 521 return 1; 522 } 523 524 __setup("fbcon=", fb_console_setup); 525 #endif 526 527 static int search_fb_in_map(int idx) 528 { 529 int i, retval = 0; 530 531 for (i = first_fb_vc; i <= last_fb_vc; i++) { 532 if (con2fb_map[i] == idx) 533 retval = 1; 534 } 535 return retval; 536 } 537 538 static int search_for_mapped_con(void) 539 { 540 int i, retval = 0; 541 542 for (i = first_fb_vc; i <= last_fb_vc; i++) { 543 if (con2fb_map[i] != -1) 544 retval = 1; 545 } 546 return retval; 547 } 548 549 static int do_fbcon_takeover(int show_logo) 550 { 551 int err, i; 552 553 if (!num_registered_fb) 554 return -ENODEV; 555 556 if (!show_logo) 557 logo_shown = FBCON_LOGO_DONTSHOW; 558 559 for (i = first_fb_vc; i <= last_fb_vc; i++) 560 con2fb_map[i] = info_idx; 561 562 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, 563 fbcon_is_default); 564 565 if (err) { 566 for (i = first_fb_vc; i <= last_fb_vc; i++) 567 con2fb_map[i] = -1; 568 info_idx = -1; 569 } else { 570 fbcon_has_console_bind = 1; 571 } 572 573 return err; 574 } 575 576 #ifdef MODULE 577 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 578 int cols, int rows, int new_cols, int new_rows) 579 { 580 logo_shown = FBCON_LOGO_DONTSHOW; 581 } 582 #else 583 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 584 int cols, int rows, int new_cols, int new_rows) 585 { 586 /* Need to make room for the logo */ 587 struct fbcon_ops *ops = info->fbcon_par; 588 int cnt, erase = vc->vc_video_erase_char, step; 589 unsigned short *save = NULL, *r, *q; 590 int logo_height; 591 592 if (info->fbops->owner) { 593 logo_shown = FBCON_LOGO_DONTSHOW; 594 return; 595 } 596 597 /* 598 * remove underline attribute from erase character 599 * if black and white framebuffer. 600 */ 601 if (fb_get_color_depth(&info->var, &info->fix) == 1) 602 erase &= ~0x400; 603 logo_height = fb_prepare_logo(info, ops->rotate); 604 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); 605 q = (unsigned short *) (vc->vc_origin + 606 vc->vc_size_row * rows); 607 step = logo_lines * cols; 608 for (r = q - logo_lines * cols; r < q; r++) 609 if (scr_readw(r) != vc->vc_video_erase_char) 610 break; 611 if (r != q && new_rows >= rows + logo_lines) { 612 save = kmalloc(array3_size(logo_lines, new_cols, 2), 613 GFP_KERNEL); 614 if (save) { 615 int i = cols < new_cols ? cols : new_cols; 616 scr_memsetw(save, erase, logo_lines * new_cols * 2); 617 r = q - step; 618 for (cnt = 0; cnt < logo_lines; cnt++, r += i) 619 scr_memcpyw(save + cnt * new_cols, r, 2 * i); 620 r = q; 621 } 622 } 623 if (r == q) { 624 /* We can scroll screen down */ 625 r = q - step - cols; 626 for (cnt = rows - logo_lines; cnt > 0; cnt--) { 627 scr_memcpyw(r + step, r, vc->vc_size_row); 628 r -= cols; 629 } 630 if (!save) { 631 int lines; 632 if (vc->vc_y + logo_lines >= rows) 633 lines = rows - vc->vc_y - 1; 634 else 635 lines = logo_lines; 636 vc->vc_y += lines; 637 vc->vc_pos += lines * vc->vc_size_row; 638 } 639 } 640 scr_memsetw((unsigned short *) vc->vc_origin, 641 erase, 642 vc->vc_size_row * logo_lines); 643 644 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 645 fbcon_clear_margins(vc, 0); 646 update_screen(vc); 647 } 648 649 if (save) { 650 q = (unsigned short *) (vc->vc_origin + 651 vc->vc_size_row * 652 rows); 653 scr_memcpyw(q, save, logo_lines * new_cols * 2); 654 vc->vc_y += logo_lines; 655 vc->vc_pos += logo_lines * vc->vc_size_row; 656 kfree(save); 657 } 658 659 if (logo_shown == FBCON_LOGO_DONTSHOW) 660 return; 661 662 if (logo_lines > vc->vc_bottom) { 663 logo_shown = FBCON_LOGO_CANSHOW; 664 printk(KERN_INFO 665 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 666 } else { 667 logo_shown = FBCON_LOGO_DRAW; 668 vc->vc_top = logo_lines; 669 } 670 } 671 #endif /* MODULE */ 672 673 #ifdef CONFIG_FB_TILEBLITTING 674 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 675 { 676 struct fbcon_ops *ops = info->fbcon_par; 677 678 ops->p = &fb_display[vc->vc_num]; 679 680 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 681 fbcon_set_tileops(vc, info); 682 else { 683 fbcon_set_rotation(info); 684 fbcon_set_bitops(ops); 685 } 686 } 687 688 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 689 { 690 int err = 0; 691 692 if (info->flags & FBINFO_MISC_TILEBLITTING && 693 info->tileops->fb_get_tilemax(info) < charcount) 694 err = 1; 695 696 return err; 697 } 698 #else 699 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 700 { 701 struct fbcon_ops *ops = info->fbcon_par; 702 703 info->flags &= ~FBINFO_MISC_TILEBLITTING; 704 ops->p = &fb_display[vc->vc_num]; 705 fbcon_set_rotation(info); 706 fbcon_set_bitops(ops); 707 } 708 709 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 710 { 711 return 0; 712 } 713 714 #endif /* CONFIG_MISC_TILEBLITTING */ 715 716 717 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 718 int unit, int oldidx) 719 { 720 struct fbcon_ops *ops = NULL; 721 int err = 0; 722 723 if (!try_module_get(info->fbops->owner)) 724 err = -ENODEV; 725 726 if (!err && info->fbops->fb_open && 727 info->fbops->fb_open(info, 0)) 728 err = -ENODEV; 729 730 if (!err) { 731 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 732 if (!ops) 733 err = -ENOMEM; 734 } 735 736 if (!err) { 737 ops->cur_blink_jiffies = HZ / 5; 738 ops->info = info; 739 info->fbcon_par = ops; 740 741 if (vc) 742 set_blitting_type(vc, info); 743 } 744 745 if (err) { 746 con2fb_map[unit] = oldidx; 747 module_put(info->fbops->owner); 748 } 749 750 return err; 751 } 752 753 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 754 struct fb_info *newinfo, int unit, 755 int oldidx, int found) 756 { 757 struct fbcon_ops *ops = oldinfo->fbcon_par; 758 int err = 0, ret; 759 760 if (oldinfo->fbops->fb_release && 761 oldinfo->fbops->fb_release(oldinfo, 0)) { 762 con2fb_map[unit] = oldidx; 763 if (!found && newinfo->fbops->fb_release) 764 newinfo->fbops->fb_release(newinfo, 0); 765 if (!found) 766 module_put(newinfo->fbops->owner); 767 err = -ENODEV; 768 } 769 770 if (!err) { 771 fbcon_del_cursor_timer(oldinfo); 772 kfree(ops->cursor_state.mask); 773 kfree(ops->cursor_data); 774 kfree(ops->cursor_src); 775 kfree(ops->fontbuffer); 776 kfree(oldinfo->fbcon_par); 777 oldinfo->fbcon_par = NULL; 778 module_put(oldinfo->fbops->owner); 779 /* 780 If oldinfo and newinfo are driving the same hardware, 781 the fb_release() method of oldinfo may attempt to 782 restore the hardware state. This will leave the 783 newinfo in an undefined state. Thus, a call to 784 fb_set_par() may be needed for the newinfo. 785 */ 786 if (newinfo && newinfo->fbops->fb_set_par) { 787 ret = newinfo->fbops->fb_set_par(newinfo); 788 789 if (ret) 790 printk(KERN_ERR "con2fb_release_oldinfo: " 791 "detected unhandled fb_set_par error, " 792 "error code %d\n", ret); 793 } 794 } 795 796 return err; 797 } 798 799 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 800 int unit, int show_logo) 801 { 802 struct fbcon_ops *ops = info->fbcon_par; 803 int ret; 804 805 ops->currcon = fg_console; 806 807 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 808 ret = info->fbops->fb_set_par(info); 809 810 if (ret) 811 printk(KERN_ERR "con2fb_init_display: detected " 812 "unhandled fb_set_par error, " 813 "error code %d\n", ret); 814 } 815 816 ops->flags |= FBCON_FLAGS_INIT; 817 ops->graphics = 0; 818 fbcon_set_disp(info, &info->var, unit); 819 820 if (show_logo) { 821 struct vc_data *fg_vc = vc_cons[fg_console].d; 822 struct fb_info *fg_info = 823 registered_fb[con2fb_map[fg_console]]; 824 825 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 826 fg_vc->vc_rows, fg_vc->vc_cols, 827 fg_vc->vc_rows); 828 } 829 830 update_screen(vc_cons[fg_console].d); 831 } 832 833 /** 834 * set_con2fb_map - map console to frame buffer device 835 * @unit: virtual console number to map 836 * @newidx: frame buffer index to map virtual console to 837 * @user: user request 838 * 839 * Maps a virtual console @unit to a frame buffer device 840 * @newidx. 841 * 842 * This should be called with the console lock held. 843 */ 844 static int set_con2fb_map(int unit, int newidx, int user) 845 { 846 struct vc_data *vc = vc_cons[unit].d; 847 int oldidx = con2fb_map[unit]; 848 struct fb_info *info = registered_fb[newidx]; 849 struct fb_info *oldinfo = NULL; 850 int found, err = 0; 851 852 WARN_CONSOLE_UNLOCKED(); 853 854 if (oldidx == newidx) 855 return 0; 856 857 if (!info) 858 return -EINVAL; 859 860 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 861 info_idx = newidx; 862 return do_fbcon_takeover(0); 863 } 864 865 if (oldidx != -1) 866 oldinfo = registered_fb[oldidx]; 867 868 found = search_fb_in_map(newidx); 869 870 con2fb_map[unit] = newidx; 871 if (!err && !found) 872 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 873 874 875 /* 876 * If old fb is not mapped to any of the consoles, 877 * fbcon should release it. 878 */ 879 if (!err && oldinfo && !search_fb_in_map(oldidx)) 880 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 881 found); 882 883 if (!err) { 884 int show_logo = (fg_console == 0 && !user && 885 logo_shown != FBCON_LOGO_DONTSHOW); 886 887 if (!found) 888 fbcon_add_cursor_timer(info); 889 con2fb_map_boot[unit] = newidx; 890 con2fb_init_display(vc, info, unit, show_logo); 891 } 892 893 if (!search_fb_in_map(info_idx)) 894 info_idx = newidx; 895 896 return err; 897 } 898 899 /* 900 * Low Level Operations 901 */ 902 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 903 static int var_to_display(struct display *disp, 904 struct fb_var_screeninfo *var, 905 struct fb_info *info) 906 { 907 disp->xres_virtual = var->xres_virtual; 908 disp->yres_virtual = var->yres_virtual; 909 disp->bits_per_pixel = var->bits_per_pixel; 910 disp->grayscale = var->grayscale; 911 disp->nonstd = var->nonstd; 912 disp->accel_flags = var->accel_flags; 913 disp->height = var->height; 914 disp->width = var->width; 915 disp->red = var->red; 916 disp->green = var->green; 917 disp->blue = var->blue; 918 disp->transp = var->transp; 919 disp->rotate = var->rotate; 920 disp->mode = fb_match_mode(var, &info->modelist); 921 if (disp->mode == NULL) 922 /* This should not happen */ 923 return -EINVAL; 924 return 0; 925 } 926 927 static void display_to_var(struct fb_var_screeninfo *var, 928 struct display *disp) 929 { 930 fb_videomode_to_var(var, disp->mode); 931 var->xres_virtual = disp->xres_virtual; 932 var->yres_virtual = disp->yres_virtual; 933 var->bits_per_pixel = disp->bits_per_pixel; 934 var->grayscale = disp->grayscale; 935 var->nonstd = disp->nonstd; 936 var->accel_flags = disp->accel_flags; 937 var->height = disp->height; 938 var->width = disp->width; 939 var->red = disp->red; 940 var->green = disp->green; 941 var->blue = disp->blue; 942 var->transp = disp->transp; 943 var->rotate = disp->rotate; 944 } 945 946 static const char *fbcon_startup(void) 947 { 948 const char *display_desc = "frame buffer device"; 949 struct display *p = &fb_display[fg_console]; 950 struct vc_data *vc = vc_cons[fg_console].d; 951 const struct font_desc *font = NULL; 952 struct module *owner; 953 struct fb_info *info = NULL; 954 struct fbcon_ops *ops; 955 int rows, cols; 956 957 /* 958 * If num_registered_fb is zero, this is a call for the dummy part. 959 * The frame buffer devices weren't initialized yet. 960 */ 961 if (!num_registered_fb || info_idx == -1) 962 return display_desc; 963 /* 964 * Instead of blindly using registered_fb[0], we use info_idx, set by 965 * fb_console_init(); 966 */ 967 info = registered_fb[info_idx]; 968 if (!info) 969 return NULL; 970 971 owner = info->fbops->owner; 972 if (!try_module_get(owner)) 973 return NULL; 974 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 975 module_put(owner); 976 return NULL; 977 } 978 979 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 980 if (!ops) { 981 module_put(owner); 982 return NULL; 983 } 984 985 ops->currcon = -1; 986 ops->graphics = 1; 987 ops->cur_rotate = -1; 988 ops->cur_blink_jiffies = HZ / 5; 989 ops->info = info; 990 info->fbcon_par = ops; 991 992 p->con_rotate = initial_rotation; 993 if (p->con_rotate == -1) 994 p->con_rotate = info->fbcon_rotate_hint; 995 if (p->con_rotate == -1) 996 p->con_rotate = FB_ROTATE_UR; 997 998 set_blitting_type(vc, info); 999 1000 if (info->fix.type != FB_TYPE_TEXT) { 1001 if (fbcon_softback_size) { 1002 if (!softback_buf) { 1003 softback_buf = 1004 (unsigned long) 1005 kvmalloc(fbcon_softback_size, 1006 GFP_KERNEL); 1007 if (!softback_buf) { 1008 fbcon_softback_size = 0; 1009 softback_top = 0; 1010 } 1011 } 1012 } else { 1013 if (softback_buf) { 1014 kvfree((void *) softback_buf); 1015 softback_buf = 0; 1016 softback_top = 0; 1017 } 1018 } 1019 if (softback_buf) 1020 softback_in = softback_top = softback_curr = 1021 softback_buf; 1022 softback_lines = 0; 1023 } 1024 1025 /* Setup default font */ 1026 if (!p->fontdata && !vc->vc_font.data) { 1027 if (!fontname[0] || !(font = find_font(fontname))) 1028 font = get_default_font(info->var.xres, 1029 info->var.yres, 1030 info->pixmap.blit_x, 1031 info->pixmap.blit_y); 1032 vc->vc_font.width = font->width; 1033 vc->vc_font.height = font->height; 1034 vc->vc_font.data = (void *)(p->fontdata = font->data); 1035 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1036 } else { 1037 p->fontdata = vc->vc_font.data; 1038 } 1039 1040 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1041 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1042 cols /= vc->vc_font.width; 1043 rows /= vc->vc_font.height; 1044 vc_resize(vc, cols, rows); 1045 1046 DPRINTK("mode: %s\n", info->fix.id); 1047 DPRINTK("visual: %d\n", info->fix.visual); 1048 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1049 info->var.yres, 1050 info->var.bits_per_pixel); 1051 1052 fbcon_add_cursor_timer(info); 1053 fbcon_has_exited = 0; 1054 return display_desc; 1055 } 1056 1057 static void fbcon_init(struct vc_data *vc, int init) 1058 { 1059 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1060 struct fbcon_ops *ops; 1061 struct vc_data **default_mode = vc->vc_display_fg; 1062 struct vc_data *svc = *default_mode; 1063 struct display *t, *p = &fb_display[vc->vc_num]; 1064 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1065 int cap, ret; 1066 1067 if (info_idx == -1 || info == NULL) 1068 return; 1069 1070 cap = info->flags; 1071 1072 if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET) 1073 logo_shown = FBCON_LOGO_DONTSHOW; 1074 1075 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1076 (info->fix.type == FB_TYPE_TEXT)) 1077 logo = 0; 1078 1079 if (var_to_display(p, &info->var, info)) 1080 return; 1081 1082 if (!info->fbcon_par) 1083 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1084 1085 /* If we are not the first console on this 1086 fb, copy the font from that console */ 1087 t = &fb_display[fg_console]; 1088 if (!p->fontdata) { 1089 if (t->fontdata) { 1090 struct vc_data *fvc = vc_cons[fg_console].d; 1091 1092 vc->vc_font.data = (void *)(p->fontdata = 1093 fvc->vc_font.data); 1094 vc->vc_font.width = fvc->vc_font.width; 1095 vc->vc_font.height = fvc->vc_font.height; 1096 p->userfont = t->userfont; 1097 1098 if (p->userfont) 1099 REFCOUNT(p->fontdata)++; 1100 } else { 1101 const struct font_desc *font = NULL; 1102 1103 if (!fontname[0] || !(font = find_font(fontname))) 1104 font = get_default_font(info->var.xres, 1105 info->var.yres, 1106 info->pixmap.blit_x, 1107 info->pixmap.blit_y); 1108 vc->vc_font.width = font->width; 1109 vc->vc_font.height = font->height; 1110 vc->vc_font.data = (void *)(p->fontdata = font->data); 1111 vc->vc_font.charcount = 256; /* FIXME Need to 1112 support more fonts */ 1113 } 1114 } 1115 1116 if (p->userfont) 1117 charcnt = FNTCHARCNT(p->fontdata); 1118 1119 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1120 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1121 if (charcnt == 256) { 1122 vc->vc_hi_font_mask = 0; 1123 } else { 1124 vc->vc_hi_font_mask = 0x100; 1125 if (vc->vc_can_do_color) 1126 vc->vc_complement_mask <<= 1; 1127 } 1128 1129 if (!*svc->vc_uni_pagedir_loc) 1130 con_set_default_unimap(svc); 1131 if (!*vc->vc_uni_pagedir_loc) 1132 con_copy_unimap(vc, svc); 1133 1134 ops = info->fbcon_par; 1135 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1136 1137 p->con_rotate = initial_rotation; 1138 if (p->con_rotate == -1) 1139 p->con_rotate = info->fbcon_rotate_hint; 1140 if (p->con_rotate == -1) 1141 p->con_rotate = FB_ROTATE_UR; 1142 1143 set_blitting_type(vc, info); 1144 1145 cols = vc->vc_cols; 1146 rows = vc->vc_rows; 1147 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1148 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1149 new_cols /= vc->vc_font.width; 1150 new_rows /= vc->vc_font.height; 1151 1152 /* 1153 * We must always set the mode. The mode of the previous console 1154 * driver could be in the same resolution but we are using different 1155 * hardware so we have to initialize the hardware. 1156 * 1157 * We need to do it in fbcon_init() to prevent screen corruption. 1158 */ 1159 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1160 if (info->fbops->fb_set_par && 1161 !(ops->flags & FBCON_FLAGS_INIT)) { 1162 ret = info->fbops->fb_set_par(info); 1163 1164 if (ret) 1165 printk(KERN_ERR "fbcon_init: detected " 1166 "unhandled fb_set_par error, " 1167 "error code %d\n", ret); 1168 } 1169 1170 ops->flags |= FBCON_FLAGS_INIT; 1171 } 1172 1173 ops->graphics = 0; 1174 1175 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1176 !(cap & FBINFO_HWACCEL_DISABLED)) 1177 p->scrollmode = SCROLL_MOVE; 1178 else /* default to something safe */ 1179 p->scrollmode = SCROLL_REDRAW; 1180 1181 /* 1182 * ++guenther: console.c:vc_allocate() relies on initializing 1183 * vc_{cols,rows}, but we must not set those if we are only 1184 * resizing the console. 1185 */ 1186 if (init) { 1187 vc->vc_cols = new_cols; 1188 vc->vc_rows = new_rows; 1189 } else 1190 vc_resize(vc, new_cols, new_rows); 1191 1192 if (logo) 1193 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1194 1195 if (vc == svc && softback_buf) 1196 fbcon_update_softback(vc); 1197 1198 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1199 ops->rotate = FB_ROTATE_UR; 1200 set_blitting_type(vc, info); 1201 } 1202 1203 ops->p = &fb_display[fg_console]; 1204 } 1205 1206 static void fbcon_free_font(struct display *p, bool freefont) 1207 { 1208 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1209 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1210 p->fontdata = NULL; 1211 p->userfont = 0; 1212 } 1213 1214 static void set_vc_hi_font(struct vc_data *vc, bool set); 1215 1216 static void fbcon_deinit(struct vc_data *vc) 1217 { 1218 struct display *p = &fb_display[vc->vc_num]; 1219 struct fb_info *info; 1220 struct fbcon_ops *ops; 1221 int idx; 1222 bool free_font = true; 1223 1224 idx = con2fb_map[vc->vc_num]; 1225 1226 if (idx == -1) 1227 goto finished; 1228 1229 info = registered_fb[idx]; 1230 1231 if (!info) 1232 goto finished; 1233 1234 if (info->flags & FBINFO_MISC_FIRMWARE) 1235 free_font = false; 1236 ops = info->fbcon_par; 1237 1238 if (!ops) 1239 goto finished; 1240 1241 if (con_is_visible(vc)) 1242 fbcon_del_cursor_timer(info); 1243 1244 ops->flags &= ~FBCON_FLAGS_INIT; 1245 finished: 1246 1247 fbcon_free_font(p, free_font); 1248 if (free_font) 1249 vc->vc_font.data = NULL; 1250 1251 if (vc->vc_hi_font_mask && vc->vc_screenbuf) 1252 set_vc_hi_font(vc, false); 1253 1254 if (!con_is_bound(&fb_con)) 1255 fbcon_exit(); 1256 1257 return; 1258 } 1259 1260 /* ====================================================================== */ 1261 1262 /* fbcon_XXX routines - interface used by the world 1263 * 1264 * This system is now divided into two levels because of complications 1265 * caused by hardware scrolling. Top level functions: 1266 * 1267 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1268 * 1269 * handles y values in range [0, scr_height-1] that correspond to real 1270 * screen positions. y_wrap shift means that first line of bitmap may be 1271 * anywhere on this display. These functions convert lineoffsets to 1272 * bitmap offsets and deal with the wrap-around case by splitting blits. 1273 * 1274 * fbcon_bmove_physical_8() -- These functions fast implementations 1275 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1276 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1277 * 1278 * WARNING: 1279 * 1280 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1281 * Implies should only really hardware scroll in rows. Only reason for 1282 * restriction is simplicity & efficiency at the moment. 1283 */ 1284 1285 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1286 int width) 1287 { 1288 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1289 struct fbcon_ops *ops = info->fbcon_par; 1290 1291 struct display *p = &fb_display[vc->vc_num]; 1292 u_int y_break; 1293 1294 if (fbcon_is_inactive(vc, info)) 1295 return; 1296 1297 if (!height || !width) 1298 return; 1299 1300 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1301 vc->vc_top = 0; 1302 /* 1303 * If the font dimensions are not an integral of the display 1304 * dimensions then the ops->clear below won't end up clearing 1305 * the margins. Call clear_margins here in case the logo 1306 * bitmap stretched into the margin area. 1307 */ 1308 fbcon_clear_margins(vc, 0); 1309 } 1310 1311 /* Split blits that cross physical y_wrap boundary */ 1312 1313 y_break = p->vrows - p->yscroll; 1314 if (sy < y_break && sy + height - 1 >= y_break) { 1315 u_int b = y_break - sy; 1316 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1317 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1318 width); 1319 } else 1320 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1321 } 1322 1323 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1324 int count, int ypos, int xpos) 1325 { 1326 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1327 struct display *p = &fb_display[vc->vc_num]; 1328 struct fbcon_ops *ops = info->fbcon_par; 1329 1330 if (!fbcon_is_inactive(vc, info)) 1331 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1332 get_color(vc, info, scr_readw(s), 1), 1333 get_color(vc, info, scr_readw(s), 0)); 1334 } 1335 1336 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1337 { 1338 unsigned short chr; 1339 1340 scr_writew(c, &chr); 1341 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1342 } 1343 1344 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1345 { 1346 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1347 struct fbcon_ops *ops = info->fbcon_par; 1348 1349 if (!fbcon_is_inactive(vc, info)) 1350 ops->clear_margins(vc, info, margin_color, bottom_only); 1351 } 1352 1353 static void fbcon_cursor(struct vc_data *vc, int mode) 1354 { 1355 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1356 struct fbcon_ops *ops = info->fbcon_par; 1357 int y; 1358 int c = scr_readw((u16 *) vc->vc_pos); 1359 1360 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1361 1362 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1363 return; 1364 1365 if (vc->vc_cursor_type & 0x10) 1366 fbcon_del_cursor_timer(info); 1367 else 1368 fbcon_add_cursor_timer(info); 1369 1370 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1371 if (mode & CM_SOFTBACK) { 1372 mode &= ~CM_SOFTBACK; 1373 y = softback_lines; 1374 } else { 1375 if (softback_lines) 1376 fbcon_set_origin(vc); 1377 y = 0; 1378 } 1379 1380 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), 1381 get_color(vc, info, c, 0)); 1382 } 1383 1384 static int scrollback_phys_max = 0; 1385 static int scrollback_max = 0; 1386 static int scrollback_current = 0; 1387 1388 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1389 int unit) 1390 { 1391 struct display *p, *t; 1392 struct vc_data **default_mode, *vc; 1393 struct vc_data *svc; 1394 struct fbcon_ops *ops = info->fbcon_par; 1395 int rows, cols, charcnt = 256; 1396 1397 p = &fb_display[unit]; 1398 1399 if (var_to_display(p, var, info)) 1400 return; 1401 1402 vc = vc_cons[unit].d; 1403 1404 if (!vc) 1405 return; 1406 1407 default_mode = vc->vc_display_fg; 1408 svc = *default_mode; 1409 t = &fb_display[svc->vc_num]; 1410 1411 if (!vc->vc_font.data) { 1412 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1413 vc->vc_font.width = (*default_mode)->vc_font.width; 1414 vc->vc_font.height = (*default_mode)->vc_font.height; 1415 p->userfont = t->userfont; 1416 if (p->userfont) 1417 REFCOUNT(p->fontdata)++; 1418 } 1419 if (p->userfont) 1420 charcnt = FNTCHARCNT(p->fontdata); 1421 1422 var->activate = FB_ACTIVATE_NOW; 1423 info->var.activate = var->activate; 1424 var->yoffset = info->var.yoffset; 1425 var->xoffset = info->var.xoffset; 1426 fb_set_var(info, var); 1427 ops->var = info->var; 1428 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1429 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1430 if (charcnt == 256) { 1431 vc->vc_hi_font_mask = 0; 1432 } else { 1433 vc->vc_hi_font_mask = 0x100; 1434 if (vc->vc_can_do_color) 1435 vc->vc_complement_mask <<= 1; 1436 } 1437 1438 if (!*svc->vc_uni_pagedir_loc) 1439 con_set_default_unimap(svc); 1440 if (!*vc->vc_uni_pagedir_loc) 1441 con_copy_unimap(vc, svc); 1442 1443 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1444 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1445 cols /= vc->vc_font.width; 1446 rows /= vc->vc_font.height; 1447 vc_resize(vc, cols, rows); 1448 1449 if (con_is_visible(vc)) { 1450 update_screen(vc); 1451 if (softback_buf) 1452 fbcon_update_softback(vc); 1453 } 1454 } 1455 1456 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1457 { 1458 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1459 struct fbcon_ops *ops = info->fbcon_par; 1460 struct display *p = &fb_display[vc->vc_num]; 1461 1462 p->yscroll += count; 1463 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1464 p->yscroll -= p->vrows; 1465 ops->var.xoffset = 0; 1466 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1467 ops->var.vmode |= FB_VMODE_YWRAP; 1468 ops->update_start(info); 1469 scrollback_max += count; 1470 if (scrollback_max > scrollback_phys_max) 1471 scrollback_max = scrollback_phys_max; 1472 scrollback_current = 0; 1473 } 1474 1475 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1476 { 1477 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1478 struct fbcon_ops *ops = info->fbcon_par; 1479 struct display *p = &fb_display[vc->vc_num]; 1480 1481 p->yscroll -= count; 1482 if (p->yscroll < 0) /* Deal with wrap */ 1483 p->yscroll += p->vrows; 1484 ops->var.xoffset = 0; 1485 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1486 ops->var.vmode |= FB_VMODE_YWRAP; 1487 ops->update_start(info); 1488 scrollback_max -= count; 1489 if (scrollback_max < 0) 1490 scrollback_max = 0; 1491 scrollback_current = 0; 1492 } 1493 1494 static __inline__ void ypan_up(struct vc_data *vc, int count) 1495 { 1496 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1497 struct display *p = &fb_display[vc->vc_num]; 1498 struct fbcon_ops *ops = info->fbcon_par; 1499 1500 p->yscroll += count; 1501 if (p->yscroll > p->vrows - vc->vc_rows) { 1502 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1503 0, 0, 0, vc->vc_rows, vc->vc_cols); 1504 p->yscroll -= p->vrows - vc->vc_rows; 1505 } 1506 1507 ops->var.xoffset = 0; 1508 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1509 ops->var.vmode &= ~FB_VMODE_YWRAP; 1510 ops->update_start(info); 1511 fbcon_clear_margins(vc, 1); 1512 scrollback_max += count; 1513 if (scrollback_max > scrollback_phys_max) 1514 scrollback_max = scrollback_phys_max; 1515 scrollback_current = 0; 1516 } 1517 1518 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1519 { 1520 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1521 struct fbcon_ops *ops = info->fbcon_par; 1522 struct display *p = &fb_display[vc->vc_num]; 1523 1524 p->yscroll += count; 1525 1526 if (p->yscroll > p->vrows - vc->vc_rows) { 1527 p->yscroll -= p->vrows - vc->vc_rows; 1528 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1529 } 1530 1531 ops->var.xoffset = 0; 1532 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1533 ops->var.vmode &= ~FB_VMODE_YWRAP; 1534 ops->update_start(info); 1535 fbcon_clear_margins(vc, 1); 1536 scrollback_max += count; 1537 if (scrollback_max > scrollback_phys_max) 1538 scrollback_max = scrollback_phys_max; 1539 scrollback_current = 0; 1540 } 1541 1542 static __inline__ void ypan_down(struct vc_data *vc, int count) 1543 { 1544 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1545 struct display *p = &fb_display[vc->vc_num]; 1546 struct fbcon_ops *ops = info->fbcon_par; 1547 1548 p->yscroll -= count; 1549 if (p->yscroll < 0) { 1550 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1551 0, vc->vc_rows, vc->vc_cols); 1552 p->yscroll += p->vrows - vc->vc_rows; 1553 } 1554 1555 ops->var.xoffset = 0; 1556 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1557 ops->var.vmode &= ~FB_VMODE_YWRAP; 1558 ops->update_start(info); 1559 fbcon_clear_margins(vc, 1); 1560 scrollback_max -= count; 1561 if (scrollback_max < 0) 1562 scrollback_max = 0; 1563 scrollback_current = 0; 1564 } 1565 1566 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1567 { 1568 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1569 struct fbcon_ops *ops = info->fbcon_par; 1570 struct display *p = &fb_display[vc->vc_num]; 1571 1572 p->yscroll -= count; 1573 1574 if (p->yscroll < 0) { 1575 p->yscroll += p->vrows - vc->vc_rows; 1576 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1577 } 1578 1579 ops->var.xoffset = 0; 1580 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1581 ops->var.vmode &= ~FB_VMODE_YWRAP; 1582 ops->update_start(info); 1583 fbcon_clear_margins(vc, 1); 1584 scrollback_max -= count; 1585 if (scrollback_max < 0) 1586 scrollback_max = 0; 1587 scrollback_current = 0; 1588 } 1589 1590 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, 1591 long delta) 1592 { 1593 int count = vc->vc_rows; 1594 unsigned short *d, *s; 1595 unsigned long n; 1596 int line = 0; 1597 1598 d = (u16 *) softback_curr; 1599 if (d == (u16 *) softback_in) 1600 d = (u16 *) vc->vc_origin; 1601 n = softback_curr + delta * vc->vc_size_row; 1602 softback_lines -= delta; 1603 if (delta < 0) { 1604 if (softback_curr < softback_top && n < softback_buf) { 1605 n += softback_end - softback_buf; 1606 if (n < softback_top) { 1607 softback_lines -= 1608 (softback_top - n) / vc->vc_size_row; 1609 n = softback_top; 1610 } 1611 } else if (softback_curr >= softback_top 1612 && n < softback_top) { 1613 softback_lines -= 1614 (softback_top - n) / vc->vc_size_row; 1615 n = softback_top; 1616 } 1617 } else { 1618 if (softback_curr > softback_in && n >= softback_end) { 1619 n += softback_buf - softback_end; 1620 if (n > softback_in) { 1621 n = softback_in; 1622 softback_lines = 0; 1623 } 1624 } else if (softback_curr <= softback_in && n > softback_in) { 1625 n = softback_in; 1626 softback_lines = 0; 1627 } 1628 } 1629 if (n == softback_curr) 1630 return; 1631 softback_curr = n; 1632 s = (u16 *) softback_curr; 1633 if (s == (u16 *) softback_in) 1634 s = (u16 *) vc->vc_origin; 1635 while (count--) { 1636 unsigned short *start; 1637 unsigned short *le; 1638 unsigned short c; 1639 int x = 0; 1640 unsigned short attr = 1; 1641 1642 start = s; 1643 le = advance_row(s, 1); 1644 do { 1645 c = scr_readw(s); 1646 if (attr != (c & 0xff00)) { 1647 attr = c & 0xff00; 1648 if (s > start) { 1649 fbcon_putcs(vc, start, s - start, 1650 line, x); 1651 x += s - start; 1652 start = s; 1653 } 1654 } 1655 if (c == scr_readw(d)) { 1656 if (s > start) { 1657 fbcon_putcs(vc, start, s - start, 1658 line, x); 1659 x += s - start + 1; 1660 start = s + 1; 1661 } else { 1662 x++; 1663 start++; 1664 } 1665 } 1666 s++; 1667 d++; 1668 } while (s < le); 1669 if (s > start) 1670 fbcon_putcs(vc, start, s - start, line, x); 1671 line++; 1672 if (d == (u16 *) softback_end) 1673 d = (u16 *) softback_buf; 1674 if (d == (u16 *) softback_in) 1675 d = (u16 *) vc->vc_origin; 1676 if (s == (u16 *) softback_end) 1677 s = (u16 *) softback_buf; 1678 if (s == (u16 *) softback_in) 1679 s = (u16 *) vc->vc_origin; 1680 } 1681 } 1682 1683 static void fbcon_redraw_move(struct vc_data *vc, struct display *p, 1684 int line, int count, int dy) 1685 { 1686 unsigned short *s = (unsigned short *) 1687 (vc->vc_origin + vc->vc_size_row * line); 1688 1689 while (count--) { 1690 unsigned short *start = s; 1691 unsigned short *le = advance_row(s, 1); 1692 unsigned short c; 1693 int x = 0; 1694 unsigned short attr = 1; 1695 1696 do { 1697 c = scr_readw(s); 1698 if (attr != (c & 0xff00)) { 1699 attr = c & 0xff00; 1700 if (s > start) { 1701 fbcon_putcs(vc, start, s - start, 1702 dy, x); 1703 x += s - start; 1704 start = s; 1705 } 1706 } 1707 console_conditional_schedule(); 1708 s++; 1709 } while (s < le); 1710 if (s > start) 1711 fbcon_putcs(vc, start, s - start, dy, x); 1712 console_conditional_schedule(); 1713 dy++; 1714 } 1715 } 1716 1717 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1718 struct display *p, int line, int count, int ycount) 1719 { 1720 int offset = ycount * vc->vc_cols; 1721 unsigned short *d = (unsigned short *) 1722 (vc->vc_origin + vc->vc_size_row * line); 1723 unsigned short *s = d + offset; 1724 struct fbcon_ops *ops = info->fbcon_par; 1725 1726 while (count--) { 1727 unsigned short *start = s; 1728 unsigned short *le = advance_row(s, 1); 1729 unsigned short c; 1730 int x = 0; 1731 1732 do { 1733 c = scr_readw(s); 1734 1735 if (c == scr_readw(d)) { 1736 if (s > start) { 1737 ops->bmove(vc, info, line + ycount, x, 1738 line, x, 1, s-start); 1739 x += s - start + 1; 1740 start = s + 1; 1741 } else { 1742 x++; 1743 start++; 1744 } 1745 } 1746 1747 scr_writew(c, d); 1748 console_conditional_schedule(); 1749 s++; 1750 d++; 1751 } while (s < le); 1752 if (s > start) 1753 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1754 s-start); 1755 console_conditional_schedule(); 1756 if (ycount > 0) 1757 line++; 1758 else { 1759 line--; 1760 /* NOTE: We subtract two lines from these pointers */ 1761 s -= vc->vc_size_row; 1762 d -= vc->vc_size_row; 1763 } 1764 } 1765 } 1766 1767 static void fbcon_redraw(struct vc_data *vc, struct display *p, 1768 int line, int count, int offset) 1769 { 1770 unsigned short *d = (unsigned short *) 1771 (vc->vc_origin + vc->vc_size_row * line); 1772 unsigned short *s = d + offset; 1773 1774 while (count--) { 1775 unsigned short *start = s; 1776 unsigned short *le = advance_row(s, 1); 1777 unsigned short c; 1778 int x = 0; 1779 unsigned short attr = 1; 1780 1781 do { 1782 c = scr_readw(s); 1783 if (attr != (c & 0xff00)) { 1784 attr = c & 0xff00; 1785 if (s > start) { 1786 fbcon_putcs(vc, start, s - start, 1787 line, x); 1788 x += s - start; 1789 start = s; 1790 } 1791 } 1792 if (c == scr_readw(d)) { 1793 if (s > start) { 1794 fbcon_putcs(vc, start, s - start, 1795 line, x); 1796 x += s - start + 1; 1797 start = s + 1; 1798 } else { 1799 x++; 1800 start++; 1801 } 1802 } 1803 scr_writew(c, d); 1804 console_conditional_schedule(); 1805 s++; 1806 d++; 1807 } while (s < le); 1808 if (s > start) 1809 fbcon_putcs(vc, start, s - start, line, x); 1810 console_conditional_schedule(); 1811 if (offset > 0) 1812 line++; 1813 else { 1814 line--; 1815 /* NOTE: We subtract two lines from these pointers */ 1816 s -= vc->vc_size_row; 1817 d -= vc->vc_size_row; 1818 } 1819 } 1820 } 1821 1822 static inline void fbcon_softback_note(struct vc_data *vc, int t, 1823 int count) 1824 { 1825 unsigned short *p; 1826 1827 if (vc->vc_num != fg_console) 1828 return; 1829 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); 1830 1831 while (count) { 1832 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); 1833 count--; 1834 p = advance_row(p, 1); 1835 softback_in += vc->vc_size_row; 1836 if (softback_in == softback_end) 1837 softback_in = softback_buf; 1838 if (softback_in == softback_top) { 1839 softback_top += vc->vc_size_row; 1840 if (softback_top == softback_end) 1841 softback_top = softback_buf; 1842 } 1843 } 1844 softback_curr = softback_in; 1845 } 1846 1847 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1848 enum con_scroll dir, unsigned int count) 1849 { 1850 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1851 struct display *p = &fb_display[vc->vc_num]; 1852 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1853 1854 if (fbcon_is_inactive(vc, info)) 1855 return true; 1856 1857 fbcon_cursor(vc, CM_ERASE); 1858 1859 /* 1860 * ++Geert: Only use ywrap/ypan if the console is in text mode 1861 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1862 * whole screen (prevents flicker). 1863 */ 1864 1865 switch (dir) { 1866 case SM_UP: 1867 if (count > vc->vc_rows) /* Maximum realistic size */ 1868 count = vc->vc_rows; 1869 if (softback_top) 1870 fbcon_softback_note(vc, t, count); 1871 if (logo_shown >= 0) 1872 goto redraw_up; 1873 switch (p->scrollmode) { 1874 case SCROLL_MOVE: 1875 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1876 count); 1877 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1878 scr_memsetw((unsigned short *) (vc->vc_origin + 1879 vc->vc_size_row * 1880 (b - count)), 1881 vc->vc_video_erase_char, 1882 vc->vc_size_row * count); 1883 return true; 1884 break; 1885 1886 case SCROLL_WRAP_MOVE: 1887 if (b - t - count > 3 * vc->vc_rows >> 2) { 1888 if (t > 0) 1889 fbcon_bmove(vc, 0, 0, count, 0, t, 1890 vc->vc_cols); 1891 ywrap_up(vc, count); 1892 if (vc->vc_rows - b > 0) 1893 fbcon_bmove(vc, b - count, 0, b, 0, 1894 vc->vc_rows - b, 1895 vc->vc_cols); 1896 } else if (info->flags & FBINFO_READS_FAST) 1897 fbcon_bmove(vc, t + count, 0, t, 0, 1898 b - t - count, vc->vc_cols); 1899 else 1900 goto redraw_up; 1901 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1902 break; 1903 1904 case SCROLL_PAN_REDRAW: 1905 if ((p->yscroll + count <= 1906 2 * (p->vrows - vc->vc_rows)) 1907 && ((!scroll_partial && (b - t == vc->vc_rows)) 1908 || (scroll_partial 1909 && (b - t - count > 1910 3 * vc->vc_rows >> 2)))) { 1911 if (t > 0) 1912 fbcon_redraw_move(vc, p, 0, t, count); 1913 ypan_up_redraw(vc, t, count); 1914 if (vc->vc_rows - b > 0) 1915 fbcon_redraw_move(vc, p, b, 1916 vc->vc_rows - b, b); 1917 } else 1918 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1919 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1920 break; 1921 1922 case SCROLL_PAN_MOVE: 1923 if ((p->yscroll + count <= 1924 2 * (p->vrows - vc->vc_rows)) 1925 && ((!scroll_partial && (b - t == vc->vc_rows)) 1926 || (scroll_partial 1927 && (b - t - count > 1928 3 * vc->vc_rows >> 2)))) { 1929 if (t > 0) 1930 fbcon_bmove(vc, 0, 0, count, 0, t, 1931 vc->vc_cols); 1932 ypan_up(vc, count); 1933 if (vc->vc_rows - b > 0) 1934 fbcon_bmove(vc, b - count, 0, b, 0, 1935 vc->vc_rows - b, 1936 vc->vc_cols); 1937 } else if (info->flags & FBINFO_READS_FAST) 1938 fbcon_bmove(vc, t + count, 0, t, 0, 1939 b - t - count, vc->vc_cols); 1940 else 1941 goto redraw_up; 1942 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1943 break; 1944 1945 case SCROLL_REDRAW: 1946 redraw_up: 1947 fbcon_redraw(vc, p, t, b - t - count, 1948 count * vc->vc_cols); 1949 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1950 scr_memsetw((unsigned short *) (vc->vc_origin + 1951 vc->vc_size_row * 1952 (b - count)), 1953 vc->vc_video_erase_char, 1954 vc->vc_size_row * count); 1955 return true; 1956 } 1957 break; 1958 1959 case SM_DOWN: 1960 if (count > vc->vc_rows) /* Maximum realistic size */ 1961 count = vc->vc_rows; 1962 if (logo_shown >= 0) 1963 goto redraw_down; 1964 switch (p->scrollmode) { 1965 case SCROLL_MOVE: 1966 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1967 -count); 1968 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1969 scr_memsetw((unsigned short *) (vc->vc_origin + 1970 vc->vc_size_row * 1971 t), 1972 vc->vc_video_erase_char, 1973 vc->vc_size_row * count); 1974 return true; 1975 break; 1976 1977 case SCROLL_WRAP_MOVE: 1978 if (b - t - count > 3 * vc->vc_rows >> 2) { 1979 if (vc->vc_rows - b > 0) 1980 fbcon_bmove(vc, b, 0, b - count, 0, 1981 vc->vc_rows - b, 1982 vc->vc_cols); 1983 ywrap_down(vc, count); 1984 if (t > 0) 1985 fbcon_bmove(vc, count, 0, 0, 0, t, 1986 vc->vc_cols); 1987 } else if (info->flags & FBINFO_READS_FAST) 1988 fbcon_bmove(vc, t, 0, t + count, 0, 1989 b - t - count, vc->vc_cols); 1990 else 1991 goto redraw_down; 1992 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1993 break; 1994 1995 case SCROLL_PAN_MOVE: 1996 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1997 && ((!scroll_partial && (b - t == vc->vc_rows)) 1998 || (scroll_partial 1999 && (b - t - count > 2000 3 * vc->vc_rows >> 2)))) { 2001 if (vc->vc_rows - b > 0) 2002 fbcon_bmove(vc, b, 0, b - count, 0, 2003 vc->vc_rows - b, 2004 vc->vc_cols); 2005 ypan_down(vc, count); 2006 if (t > 0) 2007 fbcon_bmove(vc, count, 0, 0, 0, t, 2008 vc->vc_cols); 2009 } else if (info->flags & FBINFO_READS_FAST) 2010 fbcon_bmove(vc, t, 0, t + count, 0, 2011 b - t - count, vc->vc_cols); 2012 else 2013 goto redraw_down; 2014 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2015 break; 2016 2017 case SCROLL_PAN_REDRAW: 2018 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 2019 && ((!scroll_partial && (b - t == vc->vc_rows)) 2020 || (scroll_partial 2021 && (b - t - count > 2022 3 * vc->vc_rows >> 2)))) { 2023 if (vc->vc_rows - b > 0) 2024 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 2025 b - count); 2026 ypan_down_redraw(vc, t, count); 2027 if (t > 0) 2028 fbcon_redraw_move(vc, p, count, t, 0); 2029 } else 2030 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 2031 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2032 break; 2033 2034 case SCROLL_REDRAW: 2035 redraw_down: 2036 fbcon_redraw(vc, p, b - 1, b - t - count, 2037 -count * vc->vc_cols); 2038 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2039 scr_memsetw((unsigned short *) (vc->vc_origin + 2040 vc->vc_size_row * 2041 t), 2042 vc->vc_video_erase_char, 2043 vc->vc_size_row * count); 2044 return true; 2045 } 2046 } 2047 return false; 2048 } 2049 2050 2051 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 2052 int height, int width) 2053 { 2054 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2055 struct display *p = &fb_display[vc->vc_num]; 2056 2057 if (fbcon_is_inactive(vc, info)) 2058 return; 2059 2060 if (!width || !height) 2061 return; 2062 2063 /* Split blits that cross physical y_wrap case. 2064 * Pathological case involves 4 blits, better to use recursive 2065 * code rather than unrolled case 2066 * 2067 * Recursive invocations don't need to erase the cursor over and 2068 * over again, so we use fbcon_bmove_rec() 2069 */ 2070 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 2071 p->vrows - p->yscroll); 2072 } 2073 2074 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, 2075 int dy, int dx, int height, int width, u_int y_break) 2076 { 2077 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2078 struct fbcon_ops *ops = info->fbcon_par; 2079 u_int b; 2080 2081 if (sy < y_break && sy + height > y_break) { 2082 b = y_break - sy; 2083 if (dy < sy) { /* Avoid trashing self */ 2084 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2085 y_break); 2086 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2087 height - b, width, y_break); 2088 } else { 2089 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2090 height - b, width, y_break); 2091 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2092 y_break); 2093 } 2094 return; 2095 } 2096 2097 if (dy < y_break && dy + height > y_break) { 2098 b = y_break - dy; 2099 if (dy < sy) { /* Avoid trashing self */ 2100 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2101 y_break); 2102 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2103 height - b, width, y_break); 2104 } else { 2105 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2106 height - b, width, y_break); 2107 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2108 y_break); 2109 } 2110 return; 2111 } 2112 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 2113 height, width); 2114 } 2115 2116 static void updatescrollmode(struct display *p, 2117 struct fb_info *info, 2118 struct vc_data *vc) 2119 { 2120 struct fbcon_ops *ops = info->fbcon_par; 2121 int fh = vc->vc_font.height; 2122 int cap = info->flags; 2123 u16 t = 0; 2124 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 2125 info->fix.xpanstep); 2126 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 2127 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2128 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 2129 info->var.xres_virtual); 2130 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 2131 divides(ypan, vc->vc_font.height) && vyres > yres; 2132 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 2133 divides(ywrap, vc->vc_font.height) && 2134 divides(vc->vc_font.height, vyres) && 2135 divides(vc->vc_font.height, yres); 2136 int reading_fast = cap & FBINFO_READS_FAST; 2137 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 2138 !(cap & FBINFO_HWACCEL_DISABLED); 2139 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 2140 !(cap & FBINFO_HWACCEL_DISABLED); 2141 2142 p->vrows = vyres/fh; 2143 if (yres > (fh * (vc->vc_rows + 1))) 2144 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 2145 if ((yres % fh) && (vyres % fh < yres % fh)) 2146 p->vrows--; 2147 2148 if (good_wrap || good_pan) { 2149 if (reading_fast || fast_copyarea) 2150 p->scrollmode = good_wrap ? 2151 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 2152 else 2153 p->scrollmode = good_wrap ? SCROLL_REDRAW : 2154 SCROLL_PAN_REDRAW; 2155 } else { 2156 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2157 p->scrollmode = SCROLL_MOVE; 2158 else 2159 p->scrollmode = SCROLL_REDRAW; 2160 } 2161 } 2162 2163 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2164 unsigned int height, unsigned int user) 2165 { 2166 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2167 struct fbcon_ops *ops = info->fbcon_par; 2168 struct display *p = &fb_display[vc->vc_num]; 2169 struct fb_var_screeninfo var = info->var; 2170 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2171 2172 virt_w = FBCON_SWAP(ops->rotate, width, height); 2173 virt_h = FBCON_SWAP(ops->rotate, height, width); 2174 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2175 vc->vc_font.height); 2176 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2177 vc->vc_font.width); 2178 var.xres = virt_w * virt_fw; 2179 var.yres = virt_h * virt_fh; 2180 x_diff = info->var.xres - var.xres; 2181 y_diff = info->var.yres - var.yres; 2182 if (x_diff < 0 || x_diff > virt_fw || 2183 y_diff < 0 || y_diff > virt_fh) { 2184 const struct fb_videomode *mode; 2185 2186 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2187 mode = fb_find_best_mode(&var, &info->modelist); 2188 if (mode == NULL) 2189 return -EINVAL; 2190 display_to_var(&var, p); 2191 fb_videomode_to_var(&var, mode); 2192 2193 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2194 return -EINVAL; 2195 2196 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2197 if (con_is_visible(vc)) { 2198 var.activate = FB_ACTIVATE_NOW | 2199 FB_ACTIVATE_FORCE; 2200 fb_set_var(info, &var); 2201 } 2202 var_to_display(p, &info->var, info); 2203 ops->var = info->var; 2204 } 2205 updatescrollmode(p, info, vc); 2206 return 0; 2207 } 2208 2209 static int fbcon_switch(struct vc_data *vc) 2210 { 2211 struct fb_info *info, *old_info = NULL; 2212 struct fbcon_ops *ops; 2213 struct display *p = &fb_display[vc->vc_num]; 2214 struct fb_var_screeninfo var; 2215 int i, ret, prev_console, charcnt = 256; 2216 2217 info = registered_fb[con2fb_map[vc->vc_num]]; 2218 ops = info->fbcon_par; 2219 2220 if (softback_top) { 2221 if (softback_lines) 2222 fbcon_set_origin(vc); 2223 softback_top = softback_curr = softback_in = softback_buf; 2224 softback_lines = 0; 2225 fbcon_update_softback(vc); 2226 } 2227 2228 if (logo_shown >= 0) { 2229 struct vc_data *conp2 = vc_cons[logo_shown].d; 2230 2231 if (conp2->vc_top == logo_lines 2232 && conp2->vc_bottom == conp2->vc_rows) 2233 conp2->vc_top = 0; 2234 logo_shown = FBCON_LOGO_CANSHOW; 2235 } 2236 2237 prev_console = ops->currcon; 2238 if (prev_console != -1) 2239 old_info = registered_fb[con2fb_map[prev_console]]; 2240 /* 2241 * FIXME: If we have multiple fbdev's loaded, we need to 2242 * update all info->currcon. Perhaps, we can place this 2243 * in a centralized structure, but this might break some 2244 * drivers. 2245 * 2246 * info->currcon = vc->vc_num; 2247 */ 2248 for_each_registered_fb(i) { 2249 if (registered_fb[i]->fbcon_par) { 2250 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2251 2252 o->currcon = vc->vc_num; 2253 } 2254 } 2255 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2256 display_to_var(&var, p); 2257 var.activate = FB_ACTIVATE_NOW; 2258 2259 /* 2260 * make sure we don't unnecessarily trip the memcmp() 2261 * in fb_set_var() 2262 */ 2263 info->var.activate = var.activate; 2264 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2265 fb_set_var(info, &var); 2266 ops->var = info->var; 2267 2268 if (old_info != NULL && (old_info != info || 2269 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2270 if (info->fbops->fb_set_par) { 2271 ret = info->fbops->fb_set_par(info); 2272 2273 if (ret) 2274 printk(KERN_ERR "fbcon_switch: detected " 2275 "unhandled fb_set_par error, " 2276 "error code %d\n", ret); 2277 } 2278 2279 if (old_info != info) 2280 fbcon_del_cursor_timer(old_info); 2281 } 2282 2283 if (fbcon_is_inactive(vc, info) || 2284 ops->blank_state != FB_BLANK_UNBLANK) 2285 fbcon_del_cursor_timer(info); 2286 else 2287 fbcon_add_cursor_timer(info); 2288 2289 set_blitting_type(vc, info); 2290 ops->cursor_reset = 1; 2291 2292 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2293 ops->rotate = FB_ROTATE_UR; 2294 set_blitting_type(vc, info); 2295 } 2296 2297 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2298 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2299 2300 if (p->userfont) 2301 charcnt = FNTCHARCNT(vc->vc_font.data); 2302 2303 if (charcnt > 256) 2304 vc->vc_complement_mask <<= 1; 2305 2306 updatescrollmode(p, info, vc); 2307 2308 switch (p->scrollmode) { 2309 case SCROLL_WRAP_MOVE: 2310 scrollback_phys_max = p->vrows - vc->vc_rows; 2311 break; 2312 case SCROLL_PAN_MOVE: 2313 case SCROLL_PAN_REDRAW: 2314 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2315 if (scrollback_phys_max < 0) 2316 scrollback_phys_max = 0; 2317 break; 2318 default: 2319 scrollback_phys_max = 0; 2320 break; 2321 } 2322 2323 scrollback_max = 0; 2324 scrollback_current = 0; 2325 2326 if (!fbcon_is_inactive(vc, info)) { 2327 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2328 ops->update_start(info); 2329 } 2330 2331 fbcon_set_palette(vc, color_table); 2332 fbcon_clear_margins(vc, 0); 2333 2334 if (logo_shown == FBCON_LOGO_DRAW) { 2335 2336 logo_shown = fg_console; 2337 /* This is protected above by initmem_freed */ 2338 fb_show_logo(info, ops->rotate); 2339 update_region(vc, 2340 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2341 vc->vc_size_row * (vc->vc_bottom - 2342 vc->vc_top) / 2); 2343 return 0; 2344 } 2345 return 1; 2346 } 2347 2348 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2349 int blank) 2350 { 2351 struct fb_event event; 2352 2353 if (blank) { 2354 unsigned short charmask = vc->vc_hi_font_mask ? 2355 0x1ff : 0xff; 2356 unsigned short oldc; 2357 2358 oldc = vc->vc_video_erase_char; 2359 vc->vc_video_erase_char &= charmask; 2360 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2361 vc->vc_video_erase_char = oldc; 2362 } 2363 2364 2365 if (!lock_fb_info(info)) 2366 return; 2367 event.info = info; 2368 event.data = ␣ 2369 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event); 2370 unlock_fb_info(info); 2371 } 2372 2373 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2374 { 2375 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2376 struct fbcon_ops *ops = info->fbcon_par; 2377 2378 if (mode_switch) { 2379 struct fb_var_screeninfo var = info->var; 2380 2381 ops->graphics = 1; 2382 2383 if (!blank) { 2384 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; 2385 fb_set_var(info, &var); 2386 ops->graphics = 0; 2387 ops->var = info->var; 2388 } 2389 } 2390 2391 if (!fbcon_is_inactive(vc, info)) { 2392 if (ops->blank_state != blank) { 2393 ops->blank_state = blank; 2394 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2395 ops->cursor_flash = (!blank); 2396 2397 if (!(info->flags & FBINFO_MISC_USEREVENT)) 2398 if (fb_blank(info, blank)) 2399 fbcon_generic_blank(vc, info, blank); 2400 } 2401 2402 if (!blank) 2403 update_screen(vc); 2404 } 2405 2406 if (mode_switch || fbcon_is_inactive(vc, info) || 2407 ops->blank_state != FB_BLANK_UNBLANK) 2408 fbcon_del_cursor_timer(info); 2409 else 2410 fbcon_add_cursor_timer(info); 2411 2412 return 0; 2413 } 2414 2415 static int fbcon_debug_enter(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->save_graphics = ops->graphics; 2421 ops->graphics = 0; 2422 if (info->fbops->fb_debug_enter) 2423 info->fbops->fb_debug_enter(info); 2424 fbcon_set_palette(vc, color_table); 2425 return 0; 2426 } 2427 2428 static int fbcon_debug_leave(struct vc_data *vc) 2429 { 2430 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2431 struct fbcon_ops *ops = info->fbcon_par; 2432 2433 ops->graphics = ops->save_graphics; 2434 if (info->fbops->fb_debug_leave) 2435 info->fbops->fb_debug_leave(info); 2436 return 0; 2437 } 2438 2439 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2440 { 2441 u8 *fontdata = vc->vc_font.data; 2442 u8 *data = font->data; 2443 int i, j; 2444 2445 font->width = vc->vc_font.width; 2446 font->height = vc->vc_font.height; 2447 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2448 if (!font->data) 2449 return 0; 2450 2451 if (font->width <= 8) { 2452 j = vc->vc_font.height; 2453 for (i = 0; i < font->charcount; i++) { 2454 memcpy(data, fontdata, j); 2455 memset(data + j, 0, 32 - j); 2456 data += 32; 2457 fontdata += j; 2458 } 2459 } else if (font->width <= 16) { 2460 j = vc->vc_font.height * 2; 2461 for (i = 0; i < font->charcount; i++) { 2462 memcpy(data, fontdata, j); 2463 memset(data + j, 0, 64 - j); 2464 data += 64; 2465 fontdata += j; 2466 } 2467 } else if (font->width <= 24) { 2468 for (i = 0; i < font->charcount; i++) { 2469 for (j = 0; j < vc->vc_font.height; j++) { 2470 *data++ = fontdata[0]; 2471 *data++ = fontdata[1]; 2472 *data++ = fontdata[2]; 2473 fontdata += sizeof(u32); 2474 } 2475 memset(data, 0, 3 * (32 - j)); 2476 data += 3 * (32 - j); 2477 } 2478 } else { 2479 j = vc->vc_font.height * 4; 2480 for (i = 0; i < font->charcount; i++) { 2481 memcpy(data, fontdata, j); 2482 memset(data + j, 0, 128 - j); 2483 data += 128; 2484 fontdata += j; 2485 } 2486 } 2487 return 0; 2488 } 2489 2490 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2491 static void set_vc_hi_font(struct vc_data *vc, bool set) 2492 { 2493 if (!set) { 2494 vc->vc_hi_font_mask = 0; 2495 if (vc->vc_can_do_color) { 2496 vc->vc_complement_mask >>= 1; 2497 vc->vc_s_complement_mask >>= 1; 2498 } 2499 2500 /* ++Edmund: reorder the attribute bits */ 2501 if (vc->vc_can_do_color) { 2502 unsigned short *cp = 2503 (unsigned short *) vc->vc_origin; 2504 int count = vc->vc_screenbuf_size / 2; 2505 unsigned short c; 2506 for (; count > 0; count--, cp++) { 2507 c = scr_readw(cp); 2508 scr_writew(((c & 0xfe00) >> 1) | 2509 (c & 0xff), cp); 2510 } 2511 c = vc->vc_video_erase_char; 2512 vc->vc_video_erase_char = 2513 ((c & 0xfe00) >> 1) | (c & 0xff); 2514 vc->vc_attr >>= 1; 2515 } 2516 } else { 2517 vc->vc_hi_font_mask = 0x100; 2518 if (vc->vc_can_do_color) { 2519 vc->vc_complement_mask <<= 1; 2520 vc->vc_s_complement_mask <<= 1; 2521 } 2522 2523 /* ++Edmund: reorder the attribute bits */ 2524 { 2525 unsigned short *cp = 2526 (unsigned short *) vc->vc_origin; 2527 int count = vc->vc_screenbuf_size / 2; 2528 unsigned short c; 2529 for (; count > 0; count--, cp++) { 2530 unsigned short newc; 2531 c = scr_readw(cp); 2532 if (vc->vc_can_do_color) 2533 newc = 2534 ((c & 0xff00) << 1) | (c & 2535 0xff); 2536 else 2537 newc = c & ~0x100; 2538 scr_writew(newc, cp); 2539 } 2540 c = vc->vc_video_erase_char; 2541 if (vc->vc_can_do_color) { 2542 vc->vc_video_erase_char = 2543 ((c & 0xff00) << 1) | (c & 0xff); 2544 vc->vc_attr <<= 1; 2545 } else 2546 vc->vc_video_erase_char = c & ~0x100; 2547 } 2548 } 2549 } 2550 2551 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2552 const u8 * data, int userfont) 2553 { 2554 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2555 struct fbcon_ops *ops = info->fbcon_par; 2556 struct display *p = &fb_display[vc->vc_num]; 2557 int resize; 2558 int cnt; 2559 char *old_data = NULL; 2560 2561 if (con_is_visible(vc) && softback_lines) 2562 fbcon_set_origin(vc); 2563 2564 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2565 if (p->userfont) 2566 old_data = vc->vc_font.data; 2567 if (userfont) 2568 cnt = FNTCHARCNT(data); 2569 else 2570 cnt = 256; 2571 vc->vc_font.data = (void *)(p->fontdata = data); 2572 if ((p->userfont = userfont)) 2573 REFCOUNT(data)++; 2574 vc->vc_font.width = w; 2575 vc->vc_font.height = h; 2576 if (vc->vc_hi_font_mask && cnt == 256) 2577 set_vc_hi_font(vc, false); 2578 else if (!vc->vc_hi_font_mask && cnt == 512) 2579 set_vc_hi_font(vc, true); 2580 2581 if (resize) { 2582 int cols, rows; 2583 2584 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2585 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2586 cols /= w; 2587 rows /= h; 2588 vc_resize(vc, cols, rows); 2589 if (con_is_visible(vc) && softback_buf) 2590 fbcon_update_softback(vc); 2591 } else if (con_is_visible(vc) 2592 && vc->vc_mode == KD_TEXT) { 2593 fbcon_clear_margins(vc, 0); 2594 update_screen(vc); 2595 } 2596 2597 if (old_data && (--REFCOUNT(old_data) == 0)) 2598 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2599 return 0; 2600 } 2601 2602 static int fbcon_copy_font(struct vc_data *vc, int con) 2603 { 2604 struct display *od = &fb_display[con]; 2605 struct console_font *f = &vc->vc_font; 2606 2607 if (od->fontdata == f->data) 2608 return 0; /* already the same font... */ 2609 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2610 } 2611 2612 /* 2613 * User asked to set font; we are guaranteed that 2614 * a) width and height are in range 1..32 2615 * b) charcount does not exceed 512 2616 * but lets not assume that, since someone might someday want to use larger 2617 * fonts. And charcount of 512 is small for unicode support. 2618 * 2619 * However, user space gives the font in 32 rows , regardless of 2620 * actual font height. So a new API is needed if support for larger fonts 2621 * is ever implemented. 2622 */ 2623 2624 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, 2625 unsigned int flags) 2626 { 2627 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2628 unsigned charcount = font->charcount; 2629 int w = font->width; 2630 int h = font->height; 2631 int size; 2632 int i, csum; 2633 u8 *new_data, *data = font->data; 2634 int pitch = (font->width+7) >> 3; 2635 2636 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2637 * If not this check should be changed to charcount < 256 */ 2638 if (charcount != 256 && charcount != 512) 2639 return -EINVAL; 2640 2641 /* Make sure drawing engine can handle the font */ 2642 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2643 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2644 return -EINVAL; 2645 2646 /* Make sure driver can handle the font length */ 2647 if (fbcon_invalid_charcount(info, charcount)) 2648 return -EINVAL; 2649 2650 size = h * pitch * charcount; 2651 2652 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2653 2654 if (!new_data) 2655 return -ENOMEM; 2656 2657 new_data += FONT_EXTRA_WORDS * sizeof(int); 2658 FNTSIZE(new_data) = size; 2659 FNTCHARCNT(new_data) = charcount; 2660 REFCOUNT(new_data) = 0; /* usage counter */ 2661 for (i=0; i< charcount; i++) { 2662 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2663 } 2664 2665 /* Since linux has a nice crc32 function use it for counting font 2666 * checksums. */ 2667 csum = crc32(0, new_data, size); 2668 2669 FNTSUM(new_data) = csum; 2670 /* Check if the same font is on some other console already */ 2671 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2672 struct vc_data *tmp = vc_cons[i].d; 2673 2674 if (fb_display[i].userfont && 2675 fb_display[i].fontdata && 2676 FNTSUM(fb_display[i].fontdata) == csum && 2677 FNTSIZE(fb_display[i].fontdata) == size && 2678 tmp->vc_font.width == w && 2679 !memcmp(fb_display[i].fontdata, new_data, size)) { 2680 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2681 new_data = (u8 *)fb_display[i].fontdata; 2682 break; 2683 } 2684 } 2685 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2686 } 2687 2688 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2689 { 2690 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2691 const struct font_desc *f; 2692 2693 if (!name) 2694 f = get_default_font(info->var.xres, info->var.yres, 2695 info->pixmap.blit_x, info->pixmap.blit_y); 2696 else if (!(f = find_font(name))) 2697 return -ENOENT; 2698 2699 font->width = f->width; 2700 font->height = f->height; 2701 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2702 } 2703 2704 static u16 palette_red[16]; 2705 static u16 palette_green[16]; 2706 static u16 palette_blue[16]; 2707 2708 static struct fb_cmap palette_cmap = { 2709 0, 16, palette_red, palette_green, palette_blue, NULL 2710 }; 2711 2712 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2713 { 2714 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2715 int i, j, k, depth; 2716 u8 val; 2717 2718 if (fbcon_is_inactive(vc, info)) 2719 return; 2720 2721 if (!con_is_visible(vc)) 2722 return; 2723 2724 depth = fb_get_color_depth(&info->var, &info->fix); 2725 if (depth > 3) { 2726 for (i = j = 0; i < 16; i++) { 2727 k = table[i]; 2728 val = vc->vc_palette[j++]; 2729 palette_red[k] = (val << 8) | val; 2730 val = vc->vc_palette[j++]; 2731 palette_green[k] = (val << 8) | val; 2732 val = vc->vc_palette[j++]; 2733 palette_blue[k] = (val << 8) | val; 2734 } 2735 palette_cmap.len = 16; 2736 palette_cmap.start = 0; 2737 /* 2738 * If framebuffer is capable of less than 16 colors, 2739 * use default palette of fbcon. 2740 */ 2741 } else 2742 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2743 2744 fb_set_cmap(&palette_cmap, info); 2745 } 2746 2747 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) 2748 { 2749 unsigned long p; 2750 int line; 2751 2752 if (vc->vc_num != fg_console || !softback_lines) 2753 return (u16 *) (vc->vc_origin + offset); 2754 line = offset / vc->vc_size_row; 2755 if (line >= softback_lines) 2756 return (u16 *) (vc->vc_origin + offset - 2757 softback_lines * vc->vc_size_row); 2758 p = softback_curr + offset; 2759 if (p >= softback_end) 2760 p += softback_buf - softback_end; 2761 return (u16 *) p; 2762 } 2763 2764 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2765 int *px, int *py) 2766 { 2767 unsigned long ret; 2768 int x, y; 2769 2770 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2771 unsigned long offset = (pos - vc->vc_origin) / 2; 2772 2773 x = offset % vc->vc_cols; 2774 y = offset / vc->vc_cols; 2775 if (vc->vc_num == fg_console) 2776 y += softback_lines; 2777 ret = pos + (vc->vc_cols - x) * 2; 2778 } else if (vc->vc_num == fg_console && softback_lines) { 2779 unsigned long offset = pos - softback_curr; 2780 2781 if (pos < softback_curr) 2782 offset += softback_end - softback_buf; 2783 offset /= 2; 2784 x = offset % vc->vc_cols; 2785 y = offset / vc->vc_cols; 2786 ret = pos + (vc->vc_cols - x) * 2; 2787 if (ret == softback_end) 2788 ret = softback_buf; 2789 if (ret == softback_in) 2790 ret = vc->vc_origin; 2791 } else { 2792 /* Should not happen */ 2793 x = y = 0; 2794 ret = vc->vc_origin; 2795 } 2796 if (px) 2797 *px = x; 2798 if (py) 2799 *py = y; 2800 return ret; 2801 } 2802 2803 /* As we might be inside of softback, we may work with non-contiguous buffer, 2804 that's why we have to use a separate routine. */ 2805 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2806 { 2807 while (cnt--) { 2808 u16 a = scr_readw(p); 2809 if (!vc->vc_can_do_color) 2810 a ^= 0x0800; 2811 else if (vc->vc_hi_font_mask == 0x100) 2812 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2813 (((a) & 0x0e00) << 4); 2814 else 2815 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2816 (((a) & 0x0700) << 4); 2817 scr_writew(a, p++); 2818 if (p == (u16 *) softback_end) 2819 p = (u16 *) softback_buf; 2820 if (p == (u16 *) softback_in) 2821 p = (u16 *) vc->vc_origin; 2822 } 2823 } 2824 2825 static void fbcon_scrolldelta(struct vc_data *vc, int lines) 2826 { 2827 struct fb_info *info = registered_fb[con2fb_map[fg_console]]; 2828 struct fbcon_ops *ops = info->fbcon_par; 2829 struct display *disp = &fb_display[fg_console]; 2830 int offset, limit, scrollback_old; 2831 2832 if (softback_top) { 2833 if (vc->vc_num != fg_console) 2834 return; 2835 if (vc->vc_mode != KD_TEXT || !lines) 2836 return; 2837 if (logo_shown >= 0) { 2838 struct vc_data *conp2 = vc_cons[logo_shown].d; 2839 2840 if (conp2->vc_top == logo_lines 2841 && conp2->vc_bottom == conp2->vc_rows) 2842 conp2->vc_top = 0; 2843 if (logo_shown == vc->vc_num) { 2844 unsigned long p, q; 2845 int i; 2846 2847 p = softback_in; 2848 q = vc->vc_origin + 2849 logo_lines * vc->vc_size_row; 2850 for (i = 0; i < logo_lines; i++) { 2851 if (p == softback_top) 2852 break; 2853 if (p == softback_buf) 2854 p = softback_end; 2855 p -= vc->vc_size_row; 2856 q -= vc->vc_size_row; 2857 scr_memcpyw((u16 *) q, (u16 *) p, 2858 vc->vc_size_row); 2859 } 2860 softback_in = softback_curr = p; 2861 update_region(vc, vc->vc_origin, 2862 logo_lines * vc->vc_cols); 2863 } 2864 logo_shown = FBCON_LOGO_CANSHOW; 2865 } 2866 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); 2867 fbcon_redraw_softback(vc, disp, lines); 2868 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); 2869 return; 2870 } 2871 2872 if (!scrollback_phys_max) 2873 return; 2874 2875 scrollback_old = scrollback_current; 2876 scrollback_current -= lines; 2877 if (scrollback_current < 0) 2878 scrollback_current = 0; 2879 else if (scrollback_current > scrollback_max) 2880 scrollback_current = scrollback_max; 2881 if (scrollback_current == scrollback_old) 2882 return; 2883 2884 if (fbcon_is_inactive(vc, info)) 2885 return; 2886 2887 fbcon_cursor(vc, CM_ERASE); 2888 2889 offset = disp->yscroll - scrollback_current; 2890 limit = disp->vrows; 2891 switch (disp->scrollmode) { 2892 case SCROLL_WRAP_MOVE: 2893 info->var.vmode |= FB_VMODE_YWRAP; 2894 break; 2895 case SCROLL_PAN_MOVE: 2896 case SCROLL_PAN_REDRAW: 2897 limit -= vc->vc_rows; 2898 info->var.vmode &= ~FB_VMODE_YWRAP; 2899 break; 2900 } 2901 if (offset < 0) 2902 offset += limit; 2903 else if (offset >= limit) 2904 offset -= limit; 2905 2906 ops->var.xoffset = 0; 2907 ops->var.yoffset = offset * vc->vc_font.height; 2908 ops->update_start(info); 2909 2910 if (!scrollback_current) 2911 fbcon_cursor(vc, CM_DRAW); 2912 } 2913 2914 static int fbcon_set_origin(struct vc_data *vc) 2915 { 2916 if (softback_lines) 2917 fbcon_scrolldelta(vc, softback_lines); 2918 return 0; 2919 } 2920 2921 static void fbcon_suspended(struct fb_info *info) 2922 { 2923 struct vc_data *vc = NULL; 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 /* Clear cursor, restore saved data */ 2931 fbcon_cursor(vc, CM_ERASE); 2932 } 2933 2934 static void fbcon_resumed(struct fb_info *info) 2935 { 2936 struct vc_data *vc; 2937 struct fbcon_ops *ops = info->fbcon_par; 2938 2939 if (!ops || ops->currcon < 0) 2940 return; 2941 vc = vc_cons[ops->currcon].d; 2942 2943 update_screen(vc); 2944 } 2945 2946 static void fbcon_modechanged(struct fb_info *info) 2947 { 2948 struct fbcon_ops *ops = info->fbcon_par; 2949 struct vc_data *vc; 2950 struct display *p; 2951 int rows, cols; 2952 2953 if (!ops || ops->currcon < 0) 2954 return; 2955 vc = vc_cons[ops->currcon].d; 2956 if (vc->vc_mode != KD_TEXT || 2957 registered_fb[con2fb_map[ops->currcon]] != info) 2958 return; 2959 2960 p = &fb_display[vc->vc_num]; 2961 set_blitting_type(vc, info); 2962 2963 if (con_is_visible(vc)) { 2964 var_to_display(p, &info->var, info); 2965 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2966 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2967 cols /= vc->vc_font.width; 2968 rows /= vc->vc_font.height; 2969 vc_resize(vc, cols, rows); 2970 updatescrollmode(p, info, vc); 2971 scrollback_max = 0; 2972 scrollback_current = 0; 2973 2974 if (!fbcon_is_inactive(vc, info)) { 2975 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2976 ops->update_start(info); 2977 } 2978 2979 fbcon_set_palette(vc, color_table); 2980 update_screen(vc); 2981 if (softback_buf) 2982 fbcon_update_softback(vc); 2983 } 2984 } 2985 2986 static void fbcon_set_all_vcs(struct fb_info *info) 2987 { 2988 struct fbcon_ops *ops = info->fbcon_par; 2989 struct vc_data *vc; 2990 struct display *p; 2991 int i, rows, cols, fg = -1; 2992 2993 if (!ops || ops->currcon < 0) 2994 return; 2995 2996 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2997 vc = vc_cons[i].d; 2998 if (!vc || vc->vc_mode != KD_TEXT || 2999 registered_fb[con2fb_map[i]] != info) 3000 continue; 3001 3002 if (con_is_visible(vc)) { 3003 fg = i; 3004 continue; 3005 } 3006 3007 p = &fb_display[vc->vc_num]; 3008 set_blitting_type(vc, info); 3009 var_to_display(p, &info->var, info); 3010 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 3011 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 3012 cols /= vc->vc_font.width; 3013 rows /= vc->vc_font.height; 3014 vc_resize(vc, cols, rows); 3015 } 3016 3017 if (fg != -1) 3018 fbcon_modechanged(info); 3019 } 3020 3021 static int fbcon_mode_deleted(struct fb_info *info, 3022 struct fb_videomode *mode) 3023 { 3024 struct fb_info *fb_info; 3025 struct display *p; 3026 int i, j, found = 0; 3027 3028 /* before deletion, ensure that mode is not in use */ 3029 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3030 j = con2fb_map[i]; 3031 if (j == -1) 3032 continue; 3033 fb_info = registered_fb[j]; 3034 if (fb_info != info) 3035 continue; 3036 p = &fb_display[i]; 3037 if (!p || !p->mode) 3038 continue; 3039 if (fb_mode_is_equal(p->mode, mode)) { 3040 found = 1; 3041 break; 3042 } 3043 } 3044 return found; 3045 } 3046 3047 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 3048 static int fbcon_unbind(void) 3049 { 3050 int ret; 3051 3052 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 3053 fbcon_is_default); 3054 3055 if (!ret) 3056 fbcon_has_console_bind = 0; 3057 3058 return ret; 3059 } 3060 #else 3061 static inline int fbcon_unbind(void) 3062 { 3063 return -EINVAL; 3064 } 3065 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 3066 3067 /* called with console_lock held */ 3068 static int fbcon_fb_unbind(int idx) 3069 { 3070 int i, new_idx = -1, ret = 0; 3071 3072 WARN_CONSOLE_UNLOCKED(); 3073 3074 if (!fbcon_has_console_bind) 3075 return 0; 3076 3077 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3078 if (con2fb_map[i] != idx && 3079 con2fb_map[i] != -1) { 3080 new_idx = con2fb_map[i]; 3081 break; 3082 } 3083 } 3084 3085 if (new_idx != -1) { 3086 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3087 if (con2fb_map[i] == idx) 3088 set_con2fb_map(i, new_idx, 0); 3089 } 3090 } else { 3091 struct fb_info *info = registered_fb[idx]; 3092 3093 /* This is sort of like set_con2fb_map, except it maps 3094 * the consoles to no device and then releases the 3095 * oldinfo to free memory and cancel the cursor blink 3096 * timer. I can imagine this just becoming part of 3097 * set_con2fb_map where new_idx is -1 3098 */ 3099 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3100 if (con2fb_map[i] == idx) { 3101 con2fb_map[i] = -1; 3102 if (!search_fb_in_map(idx)) { 3103 ret = con2fb_release_oldinfo(vc_cons[i].d, 3104 info, NULL, i, 3105 idx, 0); 3106 if (ret) { 3107 con2fb_map[i] = idx; 3108 return ret; 3109 } 3110 } 3111 } 3112 } 3113 ret = fbcon_unbind(); 3114 } 3115 3116 return ret; 3117 } 3118 3119 /* called with console_lock held */ 3120 static int fbcon_fb_unregistered(struct fb_info *info) 3121 { 3122 int i, idx; 3123 3124 WARN_CONSOLE_UNLOCKED(); 3125 3126 if (deferred_takeover) 3127 return 0; 3128 3129 idx = info->node; 3130 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3131 if (con2fb_map[i] == idx) 3132 con2fb_map[i] = -1; 3133 } 3134 3135 if (idx == info_idx) { 3136 info_idx = -1; 3137 3138 for_each_registered_fb(i) { 3139 info_idx = i; 3140 break; 3141 } 3142 } 3143 3144 if (info_idx != -1) { 3145 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3146 if (con2fb_map[i] == -1) 3147 con2fb_map[i] = info_idx; 3148 } 3149 } 3150 3151 if (primary_device == idx) 3152 primary_device = -1; 3153 3154 if (!num_registered_fb) 3155 do_unregister_con_driver(&fb_con); 3156 3157 return 0; 3158 } 3159 3160 /* called with console_lock held */ 3161 static void fbcon_remap_all(int idx) 3162 { 3163 int i; 3164 3165 WARN_CONSOLE_UNLOCKED(); 3166 3167 if (deferred_takeover) { 3168 for (i = first_fb_vc; i <= last_fb_vc; i++) 3169 con2fb_map_boot[i] = idx; 3170 fbcon_map_override(); 3171 return; 3172 } 3173 3174 for (i = first_fb_vc; i <= last_fb_vc; i++) 3175 set_con2fb_map(i, idx, 0); 3176 3177 if (con_is_bound(&fb_con)) { 3178 printk(KERN_INFO "fbcon: Remapping primary device, " 3179 "fb%i, to tty %i-%i\n", idx, 3180 first_fb_vc + 1, last_fb_vc + 1); 3181 info_idx = idx; 3182 } 3183 } 3184 3185 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 3186 static void fbcon_select_primary(struct fb_info *info) 3187 { 3188 if (!map_override && primary_device == -1 && 3189 fb_is_primary_device(info)) { 3190 int i; 3191 3192 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 3193 info->fix.id, info->node); 3194 primary_device = info->node; 3195 3196 for (i = first_fb_vc; i <= last_fb_vc; i++) 3197 con2fb_map_boot[i] = primary_device; 3198 3199 if (con_is_bound(&fb_con)) { 3200 printk(KERN_INFO "fbcon: Remapping primary device, " 3201 "fb%i, to tty %i-%i\n", info->node, 3202 first_fb_vc + 1, last_fb_vc + 1); 3203 info_idx = primary_device; 3204 } 3205 } 3206 3207 } 3208 #else 3209 static inline void fbcon_select_primary(struct fb_info *info) 3210 { 3211 return; 3212 } 3213 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 3214 3215 /* called with console_lock held */ 3216 static int fbcon_fb_registered(struct fb_info *info) 3217 { 3218 int ret = 0, i, idx; 3219 3220 WARN_CONSOLE_UNLOCKED(); 3221 3222 idx = info->node; 3223 fbcon_select_primary(info); 3224 3225 if (deferred_takeover) { 3226 pr_info("fbcon: Deferring console take-over\n"); 3227 return 0; 3228 } 3229 3230 if (info_idx == -1) { 3231 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3232 if (con2fb_map_boot[i] == idx) { 3233 info_idx = idx; 3234 break; 3235 } 3236 } 3237 3238 if (info_idx != -1) 3239 ret = do_fbcon_takeover(1); 3240 } else { 3241 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3242 if (con2fb_map_boot[i] == idx) 3243 set_con2fb_map(i, idx, 0); 3244 } 3245 } 3246 3247 return ret; 3248 } 3249 3250 static void fbcon_fb_blanked(struct fb_info *info, int blank) 3251 { 3252 struct fbcon_ops *ops = info->fbcon_par; 3253 struct vc_data *vc; 3254 3255 if (!ops || ops->currcon < 0) 3256 return; 3257 3258 vc = vc_cons[ops->currcon].d; 3259 if (vc->vc_mode != KD_TEXT || 3260 registered_fb[con2fb_map[ops->currcon]] != info) 3261 return; 3262 3263 if (con_is_visible(vc)) { 3264 if (blank) 3265 do_blank_screen(0); 3266 else 3267 do_unblank_screen(0); 3268 } 3269 ops->blank_state = blank; 3270 } 3271 3272 static void fbcon_new_modelist(struct fb_info *info) 3273 { 3274 int i; 3275 struct vc_data *vc; 3276 struct fb_var_screeninfo var; 3277 const struct fb_videomode *mode; 3278 3279 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3280 if (registered_fb[con2fb_map[i]] != info) 3281 continue; 3282 if (!fb_display[i].mode) 3283 continue; 3284 vc = vc_cons[i].d; 3285 display_to_var(&var, &fb_display[i]); 3286 mode = fb_find_nearest_mode(fb_display[i].mode, 3287 &info->modelist); 3288 fb_videomode_to_var(&var, mode); 3289 fbcon_set_disp(info, &var, vc->vc_num); 3290 } 3291 } 3292 3293 static void fbcon_get_requirement(struct fb_info *info, 3294 struct fb_blit_caps *caps) 3295 { 3296 struct vc_data *vc; 3297 struct display *p; 3298 3299 if (caps->flags) { 3300 int i, charcnt; 3301 3302 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3303 vc = vc_cons[i].d; 3304 if (vc && vc->vc_mode == KD_TEXT && 3305 info->node == con2fb_map[i]) { 3306 p = &fb_display[i]; 3307 caps->x |= 1 << (vc->vc_font.width - 1); 3308 caps->y |= 1 << (vc->vc_font.height - 1); 3309 charcnt = (p->userfont) ? 3310 FNTCHARCNT(p->fontdata) : 256; 3311 if (caps->len < charcnt) 3312 caps->len = charcnt; 3313 } 3314 } 3315 } else { 3316 vc = vc_cons[fg_console].d; 3317 3318 if (vc && vc->vc_mode == KD_TEXT && 3319 info->node == con2fb_map[fg_console]) { 3320 p = &fb_display[fg_console]; 3321 caps->x = 1 << (vc->vc_font.width - 1); 3322 caps->y = 1 << (vc->vc_font.height - 1); 3323 caps->len = (p->userfont) ? 3324 FNTCHARCNT(p->fontdata) : 256; 3325 } 3326 } 3327 } 3328 3329 static int fbcon_event_notify(struct notifier_block *self, 3330 unsigned long action, void *data) 3331 { 3332 struct fb_event *event = data; 3333 struct fb_info *info = event->info; 3334 struct fb_videomode *mode; 3335 struct fb_con2fbmap *con2fb; 3336 struct fb_blit_caps *caps; 3337 int idx, ret = 0; 3338 3339 /* 3340 * ignore all events except driver registration and deregistration 3341 * if fbcon is not active 3342 */ 3343 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED || 3344 action == FB_EVENT_FB_UNREGISTERED)) 3345 goto done; 3346 3347 switch(action) { 3348 case FB_EVENT_SUSPEND: 3349 fbcon_suspended(info); 3350 break; 3351 case FB_EVENT_RESUME: 3352 fbcon_resumed(info); 3353 break; 3354 case FB_EVENT_MODE_CHANGE: 3355 fbcon_modechanged(info); 3356 break; 3357 case FB_EVENT_MODE_CHANGE_ALL: 3358 fbcon_set_all_vcs(info); 3359 break; 3360 case FB_EVENT_MODE_DELETE: 3361 mode = event->data; 3362 ret = fbcon_mode_deleted(info, mode); 3363 break; 3364 case FB_EVENT_FB_UNBIND: 3365 idx = info->node; 3366 ret = fbcon_fb_unbind(idx); 3367 break; 3368 case FB_EVENT_FB_REGISTERED: 3369 ret = fbcon_fb_registered(info); 3370 break; 3371 case FB_EVENT_FB_UNREGISTERED: 3372 ret = fbcon_fb_unregistered(info); 3373 break; 3374 case FB_EVENT_SET_CONSOLE_MAP: 3375 /* called with console lock held */ 3376 con2fb = event->data; 3377 ret = set_con2fb_map(con2fb->console - 1, 3378 con2fb->framebuffer, 1); 3379 break; 3380 case FB_EVENT_GET_CONSOLE_MAP: 3381 con2fb = event->data; 3382 con2fb->framebuffer = con2fb_map[con2fb->console - 1]; 3383 break; 3384 case FB_EVENT_BLANK: 3385 fbcon_fb_blanked(info, *(int *)event->data); 3386 break; 3387 case FB_EVENT_NEW_MODELIST: 3388 fbcon_new_modelist(info); 3389 break; 3390 case FB_EVENT_GET_REQ: 3391 caps = event->data; 3392 fbcon_get_requirement(info, caps); 3393 break; 3394 case FB_EVENT_REMAP_ALL_CONSOLE: 3395 idx = info->node; 3396 fbcon_remap_all(idx); 3397 break; 3398 } 3399 done: 3400 return ret; 3401 } 3402 3403 /* 3404 * The console `switch' structure for the frame buffer based console 3405 */ 3406 3407 static const struct consw fb_con = { 3408 .owner = THIS_MODULE, 3409 .con_startup = fbcon_startup, 3410 .con_init = fbcon_init, 3411 .con_deinit = fbcon_deinit, 3412 .con_clear = fbcon_clear, 3413 .con_putc = fbcon_putc, 3414 .con_putcs = fbcon_putcs, 3415 .con_cursor = fbcon_cursor, 3416 .con_scroll = fbcon_scroll, 3417 .con_switch = fbcon_switch, 3418 .con_blank = fbcon_blank, 3419 .con_font_set = fbcon_set_font, 3420 .con_font_get = fbcon_get_font, 3421 .con_font_default = fbcon_set_def_font, 3422 .con_font_copy = fbcon_copy_font, 3423 .con_set_palette = fbcon_set_palette, 3424 .con_scrolldelta = fbcon_scrolldelta, 3425 .con_set_origin = fbcon_set_origin, 3426 .con_invert_region = fbcon_invert_region, 3427 .con_screen_pos = fbcon_screen_pos, 3428 .con_getxy = fbcon_getxy, 3429 .con_resize = fbcon_resize, 3430 .con_debug_enter = fbcon_debug_enter, 3431 .con_debug_leave = fbcon_debug_leave, 3432 }; 3433 3434 static struct notifier_block fbcon_event_notifier = { 3435 .notifier_call = fbcon_event_notify, 3436 }; 3437 3438 static ssize_t store_rotate(struct device *device, 3439 struct device_attribute *attr, const char *buf, 3440 size_t count) 3441 { 3442 struct fb_info *info; 3443 int rotate, idx; 3444 char **last = NULL; 3445 3446 if (fbcon_has_exited) 3447 return count; 3448 3449 console_lock(); 3450 idx = con2fb_map[fg_console]; 3451 3452 if (idx == -1 || registered_fb[idx] == NULL) 3453 goto err; 3454 3455 info = registered_fb[idx]; 3456 rotate = simple_strtoul(buf, last, 0); 3457 fbcon_rotate(info, rotate); 3458 err: 3459 console_unlock(); 3460 return count; 3461 } 3462 3463 static ssize_t store_rotate_all(struct device *device, 3464 struct device_attribute *attr,const char *buf, 3465 size_t count) 3466 { 3467 struct fb_info *info; 3468 int rotate, idx; 3469 char **last = NULL; 3470 3471 if (fbcon_has_exited) 3472 return count; 3473 3474 console_lock(); 3475 idx = con2fb_map[fg_console]; 3476 3477 if (idx == -1 || registered_fb[idx] == NULL) 3478 goto err; 3479 3480 info = registered_fb[idx]; 3481 rotate = simple_strtoul(buf, last, 0); 3482 fbcon_rotate_all(info, rotate); 3483 err: 3484 console_unlock(); 3485 return count; 3486 } 3487 3488 static ssize_t show_rotate(struct device *device, 3489 struct device_attribute *attr,char *buf) 3490 { 3491 struct fb_info *info; 3492 int rotate = 0, idx; 3493 3494 if (fbcon_has_exited) 3495 return 0; 3496 3497 console_lock(); 3498 idx = con2fb_map[fg_console]; 3499 3500 if (idx == -1 || registered_fb[idx] == NULL) 3501 goto err; 3502 3503 info = registered_fb[idx]; 3504 rotate = fbcon_get_rotate(info); 3505 err: 3506 console_unlock(); 3507 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3508 } 3509 3510 static ssize_t show_cursor_blink(struct device *device, 3511 struct device_attribute *attr, char *buf) 3512 { 3513 struct fb_info *info; 3514 struct fbcon_ops *ops; 3515 int idx, blink = -1; 3516 3517 if (fbcon_has_exited) 3518 return 0; 3519 3520 console_lock(); 3521 idx = con2fb_map[fg_console]; 3522 3523 if (idx == -1 || registered_fb[idx] == NULL) 3524 goto err; 3525 3526 info = registered_fb[idx]; 3527 ops = info->fbcon_par; 3528 3529 if (!ops) 3530 goto err; 3531 3532 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3533 err: 3534 console_unlock(); 3535 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3536 } 3537 3538 static ssize_t store_cursor_blink(struct device *device, 3539 struct device_attribute *attr, 3540 const char *buf, size_t count) 3541 { 3542 struct fb_info *info; 3543 int blink, idx; 3544 char **last = NULL; 3545 3546 if (fbcon_has_exited) 3547 return count; 3548 3549 console_lock(); 3550 idx = con2fb_map[fg_console]; 3551 3552 if (idx == -1 || registered_fb[idx] == NULL) 3553 goto err; 3554 3555 info = registered_fb[idx]; 3556 3557 if (!info->fbcon_par) 3558 goto err; 3559 3560 blink = simple_strtoul(buf, last, 0); 3561 3562 if (blink) { 3563 fbcon_cursor_noblink = 0; 3564 fbcon_add_cursor_timer(info); 3565 } else { 3566 fbcon_cursor_noblink = 1; 3567 fbcon_del_cursor_timer(info); 3568 } 3569 3570 err: 3571 console_unlock(); 3572 return count; 3573 } 3574 3575 static struct device_attribute device_attrs[] = { 3576 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3577 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3578 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3579 store_cursor_blink), 3580 }; 3581 3582 static int fbcon_init_device(void) 3583 { 3584 int i, error = 0; 3585 3586 fbcon_has_sysfs = 1; 3587 3588 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3589 error = device_create_file(fbcon_device, &device_attrs[i]); 3590 3591 if (error) 3592 break; 3593 } 3594 3595 if (error) { 3596 while (--i >= 0) 3597 device_remove_file(fbcon_device, &device_attrs[i]); 3598 3599 fbcon_has_sysfs = 0; 3600 } 3601 3602 return 0; 3603 } 3604 3605 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3606 static void fbcon_register_existing_fbs(struct work_struct *work) 3607 { 3608 int i; 3609 3610 console_lock(); 3611 3612 for_each_registered_fb(i) 3613 fbcon_fb_registered(registered_fb[i]); 3614 3615 console_unlock(); 3616 } 3617 3618 static struct notifier_block fbcon_output_nb; 3619 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); 3620 3621 static int fbcon_output_notifier(struct notifier_block *nb, 3622 unsigned long action, void *data) 3623 { 3624 WARN_CONSOLE_UNLOCKED(); 3625 3626 pr_info("fbcon: Taking over console\n"); 3627 3628 dummycon_unregister_output_notifier(&fbcon_output_nb); 3629 deferred_takeover = false; 3630 logo_shown = FBCON_LOGO_DONTSHOW; 3631 3632 /* We may get called in atomic context */ 3633 schedule_work(&fbcon_deferred_takeover_work); 3634 3635 return NOTIFY_OK; 3636 } 3637 #endif 3638 3639 static void fbcon_start(void) 3640 { 3641 WARN_CONSOLE_UNLOCKED(); 3642 3643 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3644 if (conswitchp != &dummy_con) 3645 deferred_takeover = false; 3646 3647 if (deferred_takeover) { 3648 fbcon_output_nb.notifier_call = fbcon_output_notifier; 3649 dummycon_register_output_notifier(&fbcon_output_nb); 3650 return; 3651 } 3652 #endif 3653 3654 if (num_registered_fb) { 3655 int i; 3656 3657 for_each_registered_fb(i) { 3658 info_idx = i; 3659 break; 3660 } 3661 3662 do_fbcon_takeover(0); 3663 } 3664 } 3665 3666 static void fbcon_exit(void) 3667 { 3668 struct fb_info *info; 3669 int i, j, mapped; 3670 3671 if (fbcon_has_exited) 3672 return; 3673 3674 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3675 if (deferred_takeover) { 3676 dummycon_unregister_output_notifier(&fbcon_output_nb); 3677 deferred_takeover = false; 3678 } 3679 #endif 3680 3681 kvfree((void *)softback_buf); 3682 softback_buf = 0UL; 3683 3684 for_each_registered_fb(i) { 3685 int pending = 0; 3686 3687 mapped = 0; 3688 info = registered_fb[i]; 3689 3690 if (info->queue.func) 3691 pending = cancel_work_sync(&info->queue); 3692 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3693 "no")); 3694 3695 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3696 if (con2fb_map[j] == i) { 3697 mapped = 1; 3698 break; 3699 } 3700 } 3701 3702 if (mapped) { 3703 if (info->fbops->fb_release) 3704 info->fbops->fb_release(info, 0); 3705 module_put(info->fbops->owner); 3706 3707 if (info->fbcon_par) { 3708 struct fbcon_ops *ops = info->fbcon_par; 3709 3710 fbcon_del_cursor_timer(info); 3711 kfree(ops->cursor_src); 3712 kfree(ops->cursor_state.mask); 3713 kfree(info->fbcon_par); 3714 info->fbcon_par = NULL; 3715 } 3716 3717 if (info->queue.func == fb_flashcursor) 3718 info->queue.func = NULL; 3719 } 3720 } 3721 3722 fbcon_has_exited = 1; 3723 } 3724 3725 void __init fb_console_init(void) 3726 { 3727 int i; 3728 3729 console_lock(); 3730 fb_register_client(&fbcon_event_notifier); 3731 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3732 "fbcon"); 3733 3734 if (IS_ERR(fbcon_device)) { 3735 printk(KERN_WARNING "Unable to create device " 3736 "for fbcon; errno = %ld\n", 3737 PTR_ERR(fbcon_device)); 3738 fbcon_device = NULL; 3739 } else 3740 fbcon_init_device(); 3741 3742 for (i = 0; i < MAX_NR_CONSOLES; i++) 3743 con2fb_map[i] = -1; 3744 3745 fbcon_start(); 3746 console_unlock(); 3747 } 3748 3749 #ifdef MODULE 3750 3751 static void __exit fbcon_deinit_device(void) 3752 { 3753 int i; 3754 3755 if (fbcon_has_sysfs) { 3756 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3757 device_remove_file(fbcon_device, &device_attrs[i]); 3758 3759 fbcon_has_sysfs = 0; 3760 } 3761 } 3762 3763 void __exit fb_console_exit(void) 3764 { 3765 console_lock(); 3766 fb_unregister_client(&fbcon_event_notifier); 3767 fbcon_deinit_device(); 3768 device_destroy(fb_class, MKDEV(0, 0)); 3769 fbcon_exit(); 3770 do_unregister_con_driver(&fb_con); 3771 console_unlock(); 3772 } 3773 #endif 3774