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_lines > vc->vc_bottom) { 660 logo_shown = FBCON_LOGO_CANSHOW; 661 printk(KERN_INFO 662 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 663 } else if (logo_shown != FBCON_LOGO_DONTSHOW) { 664 logo_shown = FBCON_LOGO_DRAW; 665 vc->vc_top = logo_lines; 666 } 667 } 668 #endif /* MODULE */ 669 670 #ifdef CONFIG_FB_TILEBLITTING 671 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 672 { 673 struct fbcon_ops *ops = info->fbcon_par; 674 675 ops->p = &fb_display[vc->vc_num]; 676 677 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 678 fbcon_set_tileops(vc, info); 679 else { 680 fbcon_set_rotation(info); 681 fbcon_set_bitops(ops); 682 } 683 } 684 685 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 686 { 687 int err = 0; 688 689 if (info->flags & FBINFO_MISC_TILEBLITTING && 690 info->tileops->fb_get_tilemax(info) < charcount) 691 err = 1; 692 693 return err; 694 } 695 #else 696 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 697 { 698 struct fbcon_ops *ops = info->fbcon_par; 699 700 info->flags &= ~FBINFO_MISC_TILEBLITTING; 701 ops->p = &fb_display[vc->vc_num]; 702 fbcon_set_rotation(info); 703 fbcon_set_bitops(ops); 704 } 705 706 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 707 { 708 return 0; 709 } 710 711 #endif /* CONFIG_MISC_TILEBLITTING */ 712 713 714 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 715 int unit, int oldidx) 716 { 717 struct fbcon_ops *ops = NULL; 718 int err = 0; 719 720 if (!try_module_get(info->fbops->owner)) 721 err = -ENODEV; 722 723 if (!err && info->fbops->fb_open && 724 info->fbops->fb_open(info, 0)) 725 err = -ENODEV; 726 727 if (!err) { 728 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 729 if (!ops) 730 err = -ENOMEM; 731 } 732 733 if (!err) { 734 ops->cur_blink_jiffies = HZ / 5; 735 ops->info = info; 736 info->fbcon_par = ops; 737 738 if (vc) 739 set_blitting_type(vc, info); 740 } 741 742 if (err) { 743 con2fb_map[unit] = oldidx; 744 module_put(info->fbops->owner); 745 } 746 747 return err; 748 } 749 750 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 751 struct fb_info *newinfo, int unit, 752 int oldidx, int found) 753 { 754 struct fbcon_ops *ops = oldinfo->fbcon_par; 755 int err = 0, ret; 756 757 if (oldinfo->fbops->fb_release && 758 oldinfo->fbops->fb_release(oldinfo, 0)) { 759 con2fb_map[unit] = oldidx; 760 if (!found && newinfo->fbops->fb_release) 761 newinfo->fbops->fb_release(newinfo, 0); 762 if (!found) 763 module_put(newinfo->fbops->owner); 764 err = -ENODEV; 765 } 766 767 if (!err) { 768 fbcon_del_cursor_timer(oldinfo); 769 kfree(ops->cursor_state.mask); 770 kfree(ops->cursor_data); 771 kfree(ops->cursor_src); 772 kfree(ops->fontbuffer); 773 kfree(oldinfo->fbcon_par); 774 oldinfo->fbcon_par = NULL; 775 module_put(oldinfo->fbops->owner); 776 /* 777 If oldinfo and newinfo are driving the same hardware, 778 the fb_release() method of oldinfo may attempt to 779 restore the hardware state. This will leave the 780 newinfo in an undefined state. Thus, a call to 781 fb_set_par() may be needed for the newinfo. 782 */ 783 if (newinfo && newinfo->fbops->fb_set_par) { 784 ret = newinfo->fbops->fb_set_par(newinfo); 785 786 if (ret) 787 printk(KERN_ERR "con2fb_release_oldinfo: " 788 "detected unhandled fb_set_par error, " 789 "error code %d\n", ret); 790 } 791 } 792 793 return err; 794 } 795 796 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 797 int unit, int show_logo) 798 { 799 struct fbcon_ops *ops = info->fbcon_par; 800 int ret; 801 802 ops->currcon = fg_console; 803 804 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 805 ret = info->fbops->fb_set_par(info); 806 807 if (ret) 808 printk(KERN_ERR "con2fb_init_display: detected " 809 "unhandled fb_set_par error, " 810 "error code %d\n", ret); 811 } 812 813 ops->flags |= FBCON_FLAGS_INIT; 814 ops->graphics = 0; 815 fbcon_set_disp(info, &info->var, unit); 816 817 if (show_logo) { 818 struct vc_data *fg_vc = vc_cons[fg_console].d; 819 struct fb_info *fg_info = 820 registered_fb[con2fb_map[fg_console]]; 821 822 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 823 fg_vc->vc_rows, fg_vc->vc_cols, 824 fg_vc->vc_rows); 825 } 826 827 update_screen(vc_cons[fg_console].d); 828 } 829 830 /** 831 * set_con2fb_map - map console to frame buffer device 832 * @unit: virtual console number to map 833 * @newidx: frame buffer index to map virtual console to 834 * @user: user request 835 * 836 * Maps a virtual console @unit to a frame buffer device 837 * @newidx. 838 * 839 * This should be called with the console lock held. 840 */ 841 static int set_con2fb_map(int unit, int newidx, int user) 842 { 843 struct vc_data *vc = vc_cons[unit].d; 844 int oldidx = con2fb_map[unit]; 845 struct fb_info *info = registered_fb[newidx]; 846 struct fb_info *oldinfo = NULL; 847 int found, err = 0; 848 849 WARN_CONSOLE_UNLOCKED(); 850 851 if (oldidx == newidx) 852 return 0; 853 854 if (!info) 855 return -EINVAL; 856 857 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 858 info_idx = newidx; 859 return do_fbcon_takeover(0); 860 } 861 862 if (oldidx != -1) 863 oldinfo = registered_fb[oldidx]; 864 865 found = search_fb_in_map(newidx); 866 867 con2fb_map[unit] = newidx; 868 if (!err && !found) 869 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 870 871 872 /* 873 * If old fb is not mapped to any of the consoles, 874 * fbcon should release it. 875 */ 876 if (!err && oldinfo && !search_fb_in_map(oldidx)) 877 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 878 found); 879 880 if (!err) { 881 int show_logo = (fg_console == 0 && !user && 882 logo_shown != FBCON_LOGO_DONTSHOW); 883 884 if (!found) 885 fbcon_add_cursor_timer(info); 886 con2fb_map_boot[unit] = newidx; 887 con2fb_init_display(vc, info, unit, show_logo); 888 } 889 890 if (!search_fb_in_map(info_idx)) 891 info_idx = newidx; 892 893 return err; 894 } 895 896 /* 897 * Low Level Operations 898 */ 899 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 900 static int var_to_display(struct display *disp, 901 struct fb_var_screeninfo *var, 902 struct fb_info *info) 903 { 904 disp->xres_virtual = var->xres_virtual; 905 disp->yres_virtual = var->yres_virtual; 906 disp->bits_per_pixel = var->bits_per_pixel; 907 disp->grayscale = var->grayscale; 908 disp->nonstd = var->nonstd; 909 disp->accel_flags = var->accel_flags; 910 disp->height = var->height; 911 disp->width = var->width; 912 disp->red = var->red; 913 disp->green = var->green; 914 disp->blue = var->blue; 915 disp->transp = var->transp; 916 disp->rotate = var->rotate; 917 disp->mode = fb_match_mode(var, &info->modelist); 918 if (disp->mode == NULL) 919 /* This should not happen */ 920 return -EINVAL; 921 return 0; 922 } 923 924 static void display_to_var(struct fb_var_screeninfo *var, 925 struct display *disp) 926 { 927 fb_videomode_to_var(var, disp->mode); 928 var->xres_virtual = disp->xres_virtual; 929 var->yres_virtual = disp->yres_virtual; 930 var->bits_per_pixel = disp->bits_per_pixel; 931 var->grayscale = disp->grayscale; 932 var->nonstd = disp->nonstd; 933 var->accel_flags = disp->accel_flags; 934 var->height = disp->height; 935 var->width = disp->width; 936 var->red = disp->red; 937 var->green = disp->green; 938 var->blue = disp->blue; 939 var->transp = disp->transp; 940 var->rotate = disp->rotate; 941 } 942 943 static const char *fbcon_startup(void) 944 { 945 const char *display_desc = "frame buffer device"; 946 struct display *p = &fb_display[fg_console]; 947 struct vc_data *vc = vc_cons[fg_console].d; 948 const struct font_desc *font = NULL; 949 struct module *owner; 950 struct fb_info *info = NULL; 951 struct fbcon_ops *ops; 952 int rows, cols; 953 954 /* 955 * If num_registered_fb is zero, this is a call for the dummy part. 956 * The frame buffer devices weren't initialized yet. 957 */ 958 if (!num_registered_fb || info_idx == -1) 959 return display_desc; 960 /* 961 * Instead of blindly using registered_fb[0], we use info_idx, set by 962 * fb_console_init(); 963 */ 964 info = registered_fb[info_idx]; 965 if (!info) 966 return NULL; 967 968 owner = info->fbops->owner; 969 if (!try_module_get(owner)) 970 return NULL; 971 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 972 module_put(owner); 973 return NULL; 974 } 975 976 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 977 if (!ops) { 978 module_put(owner); 979 return NULL; 980 } 981 982 ops->currcon = -1; 983 ops->graphics = 1; 984 ops->cur_rotate = -1; 985 ops->cur_blink_jiffies = HZ / 5; 986 ops->info = info; 987 info->fbcon_par = ops; 988 989 p->con_rotate = initial_rotation; 990 if (p->con_rotate == -1) 991 p->con_rotate = info->fbcon_rotate_hint; 992 if (p->con_rotate == -1) 993 p->con_rotate = FB_ROTATE_UR; 994 995 set_blitting_type(vc, info); 996 997 if (info->fix.type != FB_TYPE_TEXT) { 998 if (fbcon_softback_size) { 999 if (!softback_buf) { 1000 softback_buf = 1001 (unsigned long) 1002 kmalloc(fbcon_softback_size, 1003 GFP_KERNEL); 1004 if (!softback_buf) { 1005 fbcon_softback_size = 0; 1006 softback_top = 0; 1007 } 1008 } 1009 } else { 1010 if (softback_buf) { 1011 kfree((void *) softback_buf); 1012 softback_buf = 0; 1013 softback_top = 0; 1014 } 1015 } 1016 if (softback_buf) 1017 softback_in = softback_top = softback_curr = 1018 softback_buf; 1019 softback_lines = 0; 1020 } 1021 1022 /* Setup default font */ 1023 if (!p->fontdata && !vc->vc_font.data) { 1024 if (!fontname[0] || !(font = find_font(fontname))) 1025 font = get_default_font(info->var.xres, 1026 info->var.yres, 1027 info->pixmap.blit_x, 1028 info->pixmap.blit_y); 1029 vc->vc_font.width = font->width; 1030 vc->vc_font.height = font->height; 1031 vc->vc_font.data = (void *)(p->fontdata = font->data); 1032 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1033 } else { 1034 p->fontdata = vc->vc_font.data; 1035 } 1036 1037 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1038 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1039 cols /= vc->vc_font.width; 1040 rows /= vc->vc_font.height; 1041 vc_resize(vc, cols, rows); 1042 1043 DPRINTK("mode: %s\n", info->fix.id); 1044 DPRINTK("visual: %d\n", info->fix.visual); 1045 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1046 info->var.yres, 1047 info->var.bits_per_pixel); 1048 1049 fbcon_add_cursor_timer(info); 1050 fbcon_has_exited = 0; 1051 return display_desc; 1052 } 1053 1054 static void fbcon_init(struct vc_data *vc, int init) 1055 { 1056 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1057 struct fbcon_ops *ops; 1058 struct vc_data **default_mode = vc->vc_display_fg; 1059 struct vc_data *svc = *default_mode; 1060 struct display *t, *p = &fb_display[vc->vc_num]; 1061 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1062 int cap, ret; 1063 1064 if (info_idx == -1 || info == NULL) 1065 return; 1066 1067 cap = info->flags; 1068 1069 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1070 (info->fix.type == FB_TYPE_TEXT)) 1071 logo = 0; 1072 1073 if (var_to_display(p, &info->var, info)) 1074 return; 1075 1076 if (!info->fbcon_par) 1077 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1078 1079 /* If we are not the first console on this 1080 fb, copy the font from that console */ 1081 t = &fb_display[fg_console]; 1082 if (!p->fontdata) { 1083 if (t->fontdata) { 1084 struct vc_data *fvc = vc_cons[fg_console].d; 1085 1086 vc->vc_font.data = (void *)(p->fontdata = 1087 fvc->vc_font.data); 1088 vc->vc_font.width = fvc->vc_font.width; 1089 vc->vc_font.height = fvc->vc_font.height; 1090 p->userfont = t->userfont; 1091 1092 if (p->userfont) 1093 REFCOUNT(p->fontdata)++; 1094 } else { 1095 const struct font_desc *font = NULL; 1096 1097 if (!fontname[0] || !(font = find_font(fontname))) 1098 font = get_default_font(info->var.xres, 1099 info->var.yres, 1100 info->pixmap.blit_x, 1101 info->pixmap.blit_y); 1102 vc->vc_font.width = font->width; 1103 vc->vc_font.height = font->height; 1104 vc->vc_font.data = (void *)(p->fontdata = font->data); 1105 vc->vc_font.charcount = 256; /* FIXME Need to 1106 support more fonts */ 1107 } 1108 } 1109 1110 if (p->userfont) 1111 charcnt = FNTCHARCNT(p->fontdata); 1112 1113 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1114 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1115 if (charcnt == 256) { 1116 vc->vc_hi_font_mask = 0; 1117 } else { 1118 vc->vc_hi_font_mask = 0x100; 1119 if (vc->vc_can_do_color) 1120 vc->vc_complement_mask <<= 1; 1121 } 1122 1123 if (!*svc->vc_uni_pagedir_loc) 1124 con_set_default_unimap(svc); 1125 if (!*vc->vc_uni_pagedir_loc) 1126 con_copy_unimap(vc, svc); 1127 1128 ops = info->fbcon_par; 1129 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1130 1131 p->con_rotate = initial_rotation; 1132 if (p->con_rotate == -1) 1133 p->con_rotate = info->fbcon_rotate_hint; 1134 if (p->con_rotate == -1) 1135 p->con_rotate = FB_ROTATE_UR; 1136 1137 set_blitting_type(vc, info); 1138 1139 cols = vc->vc_cols; 1140 rows = vc->vc_rows; 1141 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1142 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1143 new_cols /= vc->vc_font.width; 1144 new_rows /= vc->vc_font.height; 1145 1146 /* 1147 * We must always set the mode. The mode of the previous console 1148 * driver could be in the same resolution but we are using different 1149 * hardware so we have to initialize the hardware. 1150 * 1151 * We need to do it in fbcon_init() to prevent screen corruption. 1152 */ 1153 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1154 if (info->fbops->fb_set_par && 1155 !(ops->flags & FBCON_FLAGS_INIT)) { 1156 ret = info->fbops->fb_set_par(info); 1157 1158 if (ret) 1159 printk(KERN_ERR "fbcon_init: detected " 1160 "unhandled fb_set_par error, " 1161 "error code %d\n", ret); 1162 } 1163 1164 ops->flags |= FBCON_FLAGS_INIT; 1165 } 1166 1167 ops->graphics = 0; 1168 1169 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1170 !(cap & FBINFO_HWACCEL_DISABLED)) 1171 p->scrollmode = SCROLL_MOVE; 1172 else /* default to something safe */ 1173 p->scrollmode = SCROLL_REDRAW; 1174 1175 /* 1176 * ++guenther: console.c:vc_allocate() relies on initializing 1177 * vc_{cols,rows}, but we must not set those if we are only 1178 * resizing the console. 1179 */ 1180 if (init) { 1181 vc->vc_cols = new_cols; 1182 vc->vc_rows = new_rows; 1183 } else 1184 vc_resize(vc, new_cols, new_rows); 1185 1186 if (logo) 1187 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1188 1189 if (vc == svc && softback_buf) 1190 fbcon_update_softback(vc); 1191 1192 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1193 ops->rotate = FB_ROTATE_UR; 1194 set_blitting_type(vc, info); 1195 } 1196 1197 ops->p = &fb_display[fg_console]; 1198 } 1199 1200 static void fbcon_free_font(struct display *p, bool freefont) 1201 { 1202 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1203 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1204 p->fontdata = NULL; 1205 p->userfont = 0; 1206 } 1207 1208 static void set_vc_hi_font(struct vc_data *vc, bool set); 1209 1210 static void fbcon_deinit(struct vc_data *vc) 1211 { 1212 struct display *p = &fb_display[vc->vc_num]; 1213 struct fb_info *info; 1214 struct fbcon_ops *ops; 1215 int idx; 1216 bool free_font = true; 1217 1218 idx = con2fb_map[vc->vc_num]; 1219 1220 if (idx == -1) 1221 goto finished; 1222 1223 info = registered_fb[idx]; 1224 1225 if (!info) 1226 goto finished; 1227 1228 if (info->flags & FBINFO_MISC_FIRMWARE) 1229 free_font = false; 1230 ops = info->fbcon_par; 1231 1232 if (!ops) 1233 goto finished; 1234 1235 if (con_is_visible(vc)) 1236 fbcon_del_cursor_timer(info); 1237 1238 ops->flags &= ~FBCON_FLAGS_INIT; 1239 finished: 1240 1241 fbcon_free_font(p, free_font); 1242 if (free_font) 1243 vc->vc_font.data = NULL; 1244 1245 if (vc->vc_hi_font_mask) 1246 set_vc_hi_font(vc, false); 1247 1248 if (!con_is_bound(&fb_con)) 1249 fbcon_exit(); 1250 1251 return; 1252 } 1253 1254 /* ====================================================================== */ 1255 1256 /* fbcon_XXX routines - interface used by the world 1257 * 1258 * This system is now divided into two levels because of complications 1259 * caused by hardware scrolling. Top level functions: 1260 * 1261 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1262 * 1263 * handles y values in range [0, scr_height-1] that correspond to real 1264 * screen positions. y_wrap shift means that first line of bitmap may be 1265 * anywhere on this display. These functions convert lineoffsets to 1266 * bitmap offsets and deal with the wrap-around case by splitting blits. 1267 * 1268 * fbcon_bmove_physical_8() -- These functions fast implementations 1269 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1270 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1271 * 1272 * WARNING: 1273 * 1274 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1275 * Implies should only really hardware scroll in rows. Only reason for 1276 * restriction is simplicity & efficiency at the moment. 1277 */ 1278 1279 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1280 int width) 1281 { 1282 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1283 struct fbcon_ops *ops = info->fbcon_par; 1284 1285 struct display *p = &fb_display[vc->vc_num]; 1286 u_int y_break; 1287 1288 if (fbcon_is_inactive(vc, info)) 1289 return; 1290 1291 if (!height || !width) 1292 return; 1293 1294 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1295 vc->vc_top = 0; 1296 /* 1297 * If the font dimensions are not an integral of the display 1298 * dimensions then the ops->clear below won't end up clearing 1299 * the margins. Call clear_margins here in case the logo 1300 * bitmap stretched into the margin area. 1301 */ 1302 fbcon_clear_margins(vc, 0); 1303 } 1304 1305 /* Split blits that cross physical y_wrap boundary */ 1306 1307 y_break = p->vrows - p->yscroll; 1308 if (sy < y_break && sy + height - 1 >= y_break) { 1309 u_int b = y_break - sy; 1310 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1311 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1312 width); 1313 } else 1314 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1315 } 1316 1317 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1318 int count, int ypos, int xpos) 1319 { 1320 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1321 struct display *p = &fb_display[vc->vc_num]; 1322 struct fbcon_ops *ops = info->fbcon_par; 1323 1324 if (!fbcon_is_inactive(vc, info)) 1325 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1326 get_color(vc, info, scr_readw(s), 1), 1327 get_color(vc, info, scr_readw(s), 0)); 1328 } 1329 1330 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1331 { 1332 unsigned short chr; 1333 1334 scr_writew(c, &chr); 1335 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1336 } 1337 1338 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1339 { 1340 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1341 struct fbcon_ops *ops = info->fbcon_par; 1342 1343 if (!fbcon_is_inactive(vc, info)) 1344 ops->clear_margins(vc, info, margin_color, bottom_only); 1345 } 1346 1347 static void fbcon_cursor(struct vc_data *vc, int mode) 1348 { 1349 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1350 struct fbcon_ops *ops = info->fbcon_par; 1351 int y; 1352 int c = scr_readw((u16 *) vc->vc_pos); 1353 1354 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1355 1356 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1357 return; 1358 1359 if (vc->vc_cursor_type & 0x10) 1360 fbcon_del_cursor_timer(info); 1361 else 1362 fbcon_add_cursor_timer(info); 1363 1364 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1365 if (mode & CM_SOFTBACK) { 1366 mode &= ~CM_SOFTBACK; 1367 y = softback_lines; 1368 } else { 1369 if (softback_lines) 1370 fbcon_set_origin(vc); 1371 y = 0; 1372 } 1373 1374 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), 1375 get_color(vc, info, c, 0)); 1376 } 1377 1378 static int scrollback_phys_max = 0; 1379 static int scrollback_max = 0; 1380 static int scrollback_current = 0; 1381 1382 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1383 int unit) 1384 { 1385 struct display *p, *t; 1386 struct vc_data **default_mode, *vc; 1387 struct vc_data *svc; 1388 struct fbcon_ops *ops = info->fbcon_par; 1389 int rows, cols, charcnt = 256; 1390 1391 p = &fb_display[unit]; 1392 1393 if (var_to_display(p, var, info)) 1394 return; 1395 1396 vc = vc_cons[unit].d; 1397 1398 if (!vc) 1399 return; 1400 1401 default_mode = vc->vc_display_fg; 1402 svc = *default_mode; 1403 t = &fb_display[svc->vc_num]; 1404 1405 if (!vc->vc_font.data) { 1406 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1407 vc->vc_font.width = (*default_mode)->vc_font.width; 1408 vc->vc_font.height = (*default_mode)->vc_font.height; 1409 p->userfont = t->userfont; 1410 if (p->userfont) 1411 REFCOUNT(p->fontdata)++; 1412 } 1413 if (p->userfont) 1414 charcnt = FNTCHARCNT(p->fontdata); 1415 1416 var->activate = FB_ACTIVATE_NOW; 1417 info->var.activate = var->activate; 1418 var->yoffset = info->var.yoffset; 1419 var->xoffset = info->var.xoffset; 1420 fb_set_var(info, var); 1421 ops->var = info->var; 1422 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1423 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1424 if (charcnt == 256) { 1425 vc->vc_hi_font_mask = 0; 1426 } else { 1427 vc->vc_hi_font_mask = 0x100; 1428 if (vc->vc_can_do_color) 1429 vc->vc_complement_mask <<= 1; 1430 } 1431 1432 if (!*svc->vc_uni_pagedir_loc) 1433 con_set_default_unimap(svc); 1434 if (!*vc->vc_uni_pagedir_loc) 1435 con_copy_unimap(vc, svc); 1436 1437 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1438 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1439 cols /= vc->vc_font.width; 1440 rows /= vc->vc_font.height; 1441 vc_resize(vc, cols, rows); 1442 1443 if (con_is_visible(vc)) { 1444 update_screen(vc); 1445 if (softback_buf) 1446 fbcon_update_softback(vc); 1447 } 1448 } 1449 1450 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1451 { 1452 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1453 struct fbcon_ops *ops = info->fbcon_par; 1454 struct display *p = &fb_display[vc->vc_num]; 1455 1456 p->yscroll += count; 1457 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1458 p->yscroll -= p->vrows; 1459 ops->var.xoffset = 0; 1460 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1461 ops->var.vmode |= FB_VMODE_YWRAP; 1462 ops->update_start(info); 1463 scrollback_max += count; 1464 if (scrollback_max > scrollback_phys_max) 1465 scrollback_max = scrollback_phys_max; 1466 scrollback_current = 0; 1467 } 1468 1469 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1470 { 1471 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1472 struct fbcon_ops *ops = info->fbcon_par; 1473 struct display *p = &fb_display[vc->vc_num]; 1474 1475 p->yscroll -= count; 1476 if (p->yscroll < 0) /* Deal with wrap */ 1477 p->yscroll += p->vrows; 1478 ops->var.xoffset = 0; 1479 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1480 ops->var.vmode |= FB_VMODE_YWRAP; 1481 ops->update_start(info); 1482 scrollback_max -= count; 1483 if (scrollback_max < 0) 1484 scrollback_max = 0; 1485 scrollback_current = 0; 1486 } 1487 1488 static __inline__ void ypan_up(struct vc_data *vc, int count) 1489 { 1490 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1491 struct display *p = &fb_display[vc->vc_num]; 1492 struct fbcon_ops *ops = info->fbcon_par; 1493 1494 p->yscroll += count; 1495 if (p->yscroll > p->vrows - vc->vc_rows) { 1496 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1497 0, 0, 0, vc->vc_rows, vc->vc_cols); 1498 p->yscroll -= p->vrows - vc->vc_rows; 1499 } 1500 1501 ops->var.xoffset = 0; 1502 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1503 ops->var.vmode &= ~FB_VMODE_YWRAP; 1504 ops->update_start(info); 1505 fbcon_clear_margins(vc, 1); 1506 scrollback_max += count; 1507 if (scrollback_max > scrollback_phys_max) 1508 scrollback_max = scrollback_phys_max; 1509 scrollback_current = 0; 1510 } 1511 1512 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1513 { 1514 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1515 struct fbcon_ops *ops = info->fbcon_par; 1516 struct display *p = &fb_display[vc->vc_num]; 1517 1518 p->yscroll += count; 1519 1520 if (p->yscroll > p->vrows - vc->vc_rows) { 1521 p->yscroll -= p->vrows - vc->vc_rows; 1522 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1523 } 1524 1525 ops->var.xoffset = 0; 1526 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1527 ops->var.vmode &= ~FB_VMODE_YWRAP; 1528 ops->update_start(info); 1529 fbcon_clear_margins(vc, 1); 1530 scrollback_max += count; 1531 if (scrollback_max > scrollback_phys_max) 1532 scrollback_max = scrollback_phys_max; 1533 scrollback_current = 0; 1534 } 1535 1536 static __inline__ void ypan_down(struct vc_data *vc, int count) 1537 { 1538 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1539 struct display *p = &fb_display[vc->vc_num]; 1540 struct fbcon_ops *ops = info->fbcon_par; 1541 1542 p->yscroll -= count; 1543 if (p->yscroll < 0) { 1544 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1545 0, vc->vc_rows, vc->vc_cols); 1546 p->yscroll += p->vrows - vc->vc_rows; 1547 } 1548 1549 ops->var.xoffset = 0; 1550 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1551 ops->var.vmode &= ~FB_VMODE_YWRAP; 1552 ops->update_start(info); 1553 fbcon_clear_margins(vc, 1); 1554 scrollback_max -= count; 1555 if (scrollback_max < 0) 1556 scrollback_max = 0; 1557 scrollback_current = 0; 1558 } 1559 1560 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1561 { 1562 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1563 struct fbcon_ops *ops = info->fbcon_par; 1564 struct display *p = &fb_display[vc->vc_num]; 1565 1566 p->yscroll -= count; 1567 1568 if (p->yscroll < 0) { 1569 p->yscroll += p->vrows - vc->vc_rows; 1570 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1571 } 1572 1573 ops->var.xoffset = 0; 1574 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1575 ops->var.vmode &= ~FB_VMODE_YWRAP; 1576 ops->update_start(info); 1577 fbcon_clear_margins(vc, 1); 1578 scrollback_max -= count; 1579 if (scrollback_max < 0) 1580 scrollback_max = 0; 1581 scrollback_current = 0; 1582 } 1583 1584 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, 1585 long delta) 1586 { 1587 int count = vc->vc_rows; 1588 unsigned short *d, *s; 1589 unsigned long n; 1590 int line = 0; 1591 1592 d = (u16 *) softback_curr; 1593 if (d == (u16 *) softback_in) 1594 d = (u16 *) vc->vc_origin; 1595 n = softback_curr + delta * vc->vc_size_row; 1596 softback_lines -= delta; 1597 if (delta < 0) { 1598 if (softback_curr < softback_top && n < softback_buf) { 1599 n += softback_end - softback_buf; 1600 if (n < softback_top) { 1601 softback_lines -= 1602 (softback_top - n) / vc->vc_size_row; 1603 n = softback_top; 1604 } 1605 } else if (softback_curr >= softback_top 1606 && n < softback_top) { 1607 softback_lines -= 1608 (softback_top - n) / vc->vc_size_row; 1609 n = softback_top; 1610 } 1611 } else { 1612 if (softback_curr > softback_in && n >= softback_end) { 1613 n += softback_buf - softback_end; 1614 if (n > softback_in) { 1615 n = softback_in; 1616 softback_lines = 0; 1617 } 1618 } else if (softback_curr <= softback_in && n > softback_in) { 1619 n = softback_in; 1620 softback_lines = 0; 1621 } 1622 } 1623 if (n == softback_curr) 1624 return; 1625 softback_curr = n; 1626 s = (u16 *) softback_curr; 1627 if (s == (u16 *) softback_in) 1628 s = (u16 *) vc->vc_origin; 1629 while (count--) { 1630 unsigned short *start; 1631 unsigned short *le; 1632 unsigned short c; 1633 int x = 0; 1634 unsigned short attr = 1; 1635 1636 start = s; 1637 le = advance_row(s, 1); 1638 do { 1639 c = scr_readw(s); 1640 if (attr != (c & 0xff00)) { 1641 attr = c & 0xff00; 1642 if (s > start) { 1643 fbcon_putcs(vc, start, s - start, 1644 line, x); 1645 x += s - start; 1646 start = s; 1647 } 1648 } 1649 if (c == scr_readw(d)) { 1650 if (s > start) { 1651 fbcon_putcs(vc, start, s - start, 1652 line, x); 1653 x += s - start + 1; 1654 start = s + 1; 1655 } else { 1656 x++; 1657 start++; 1658 } 1659 } 1660 s++; 1661 d++; 1662 } while (s < le); 1663 if (s > start) 1664 fbcon_putcs(vc, start, s - start, line, x); 1665 line++; 1666 if (d == (u16 *) softback_end) 1667 d = (u16 *) softback_buf; 1668 if (d == (u16 *) softback_in) 1669 d = (u16 *) vc->vc_origin; 1670 if (s == (u16 *) softback_end) 1671 s = (u16 *) softback_buf; 1672 if (s == (u16 *) softback_in) 1673 s = (u16 *) vc->vc_origin; 1674 } 1675 } 1676 1677 static void fbcon_redraw_move(struct vc_data *vc, struct display *p, 1678 int line, int count, int dy) 1679 { 1680 unsigned short *s = (unsigned short *) 1681 (vc->vc_origin + vc->vc_size_row * line); 1682 1683 while (count--) { 1684 unsigned short *start = s; 1685 unsigned short *le = advance_row(s, 1); 1686 unsigned short c; 1687 int x = 0; 1688 unsigned short attr = 1; 1689 1690 do { 1691 c = scr_readw(s); 1692 if (attr != (c & 0xff00)) { 1693 attr = c & 0xff00; 1694 if (s > start) { 1695 fbcon_putcs(vc, start, s - start, 1696 dy, x); 1697 x += s - start; 1698 start = s; 1699 } 1700 } 1701 console_conditional_schedule(); 1702 s++; 1703 } while (s < le); 1704 if (s > start) 1705 fbcon_putcs(vc, start, s - start, dy, x); 1706 console_conditional_schedule(); 1707 dy++; 1708 } 1709 } 1710 1711 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1712 struct display *p, int line, int count, int ycount) 1713 { 1714 int offset = ycount * vc->vc_cols; 1715 unsigned short *d = (unsigned short *) 1716 (vc->vc_origin + vc->vc_size_row * line); 1717 unsigned short *s = d + offset; 1718 struct fbcon_ops *ops = info->fbcon_par; 1719 1720 while (count--) { 1721 unsigned short *start = s; 1722 unsigned short *le = advance_row(s, 1); 1723 unsigned short c; 1724 int x = 0; 1725 1726 do { 1727 c = scr_readw(s); 1728 1729 if (c == scr_readw(d)) { 1730 if (s > start) { 1731 ops->bmove(vc, info, line + ycount, x, 1732 line, x, 1, s-start); 1733 x += s - start + 1; 1734 start = s + 1; 1735 } else { 1736 x++; 1737 start++; 1738 } 1739 } 1740 1741 scr_writew(c, d); 1742 console_conditional_schedule(); 1743 s++; 1744 d++; 1745 } while (s < le); 1746 if (s > start) 1747 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1748 s-start); 1749 console_conditional_schedule(); 1750 if (ycount > 0) 1751 line++; 1752 else { 1753 line--; 1754 /* NOTE: We subtract two lines from these pointers */ 1755 s -= vc->vc_size_row; 1756 d -= vc->vc_size_row; 1757 } 1758 } 1759 } 1760 1761 static void fbcon_redraw(struct vc_data *vc, struct display *p, 1762 int line, int count, int offset) 1763 { 1764 unsigned short *d = (unsigned short *) 1765 (vc->vc_origin + vc->vc_size_row * line); 1766 unsigned short *s = d + offset; 1767 1768 while (count--) { 1769 unsigned short *start = s; 1770 unsigned short *le = advance_row(s, 1); 1771 unsigned short c; 1772 int x = 0; 1773 unsigned short attr = 1; 1774 1775 do { 1776 c = scr_readw(s); 1777 if (attr != (c & 0xff00)) { 1778 attr = c & 0xff00; 1779 if (s > start) { 1780 fbcon_putcs(vc, start, s - start, 1781 line, x); 1782 x += s - start; 1783 start = s; 1784 } 1785 } 1786 if (c == scr_readw(d)) { 1787 if (s > start) { 1788 fbcon_putcs(vc, start, s - start, 1789 line, x); 1790 x += s - start + 1; 1791 start = s + 1; 1792 } else { 1793 x++; 1794 start++; 1795 } 1796 } 1797 scr_writew(c, d); 1798 console_conditional_schedule(); 1799 s++; 1800 d++; 1801 } while (s < le); 1802 if (s > start) 1803 fbcon_putcs(vc, start, s - start, line, x); 1804 console_conditional_schedule(); 1805 if (offset > 0) 1806 line++; 1807 else { 1808 line--; 1809 /* NOTE: We subtract two lines from these pointers */ 1810 s -= vc->vc_size_row; 1811 d -= vc->vc_size_row; 1812 } 1813 } 1814 } 1815 1816 static inline void fbcon_softback_note(struct vc_data *vc, int t, 1817 int count) 1818 { 1819 unsigned short *p; 1820 1821 if (vc->vc_num != fg_console) 1822 return; 1823 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); 1824 1825 while (count) { 1826 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); 1827 count--; 1828 p = advance_row(p, 1); 1829 softback_in += vc->vc_size_row; 1830 if (softback_in == softback_end) 1831 softback_in = softback_buf; 1832 if (softback_in == softback_top) { 1833 softback_top += vc->vc_size_row; 1834 if (softback_top == softback_end) 1835 softback_top = softback_buf; 1836 } 1837 } 1838 softback_curr = softback_in; 1839 } 1840 1841 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1842 enum con_scroll dir, unsigned int count) 1843 { 1844 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1845 struct display *p = &fb_display[vc->vc_num]; 1846 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1847 1848 if (fbcon_is_inactive(vc, info)) 1849 return true; 1850 1851 fbcon_cursor(vc, CM_ERASE); 1852 1853 /* 1854 * ++Geert: Only use ywrap/ypan if the console is in text mode 1855 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1856 * whole screen (prevents flicker). 1857 */ 1858 1859 switch (dir) { 1860 case SM_UP: 1861 if (count > vc->vc_rows) /* Maximum realistic size */ 1862 count = vc->vc_rows; 1863 if (softback_top) 1864 fbcon_softback_note(vc, t, count); 1865 if (logo_shown >= 0) 1866 goto redraw_up; 1867 switch (p->scrollmode) { 1868 case SCROLL_MOVE: 1869 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1870 count); 1871 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1872 scr_memsetw((unsigned short *) (vc->vc_origin + 1873 vc->vc_size_row * 1874 (b - count)), 1875 vc->vc_video_erase_char, 1876 vc->vc_size_row * count); 1877 return true; 1878 break; 1879 1880 case SCROLL_WRAP_MOVE: 1881 if (b - t - count > 3 * vc->vc_rows >> 2) { 1882 if (t > 0) 1883 fbcon_bmove(vc, 0, 0, count, 0, t, 1884 vc->vc_cols); 1885 ywrap_up(vc, count); 1886 if (vc->vc_rows - b > 0) 1887 fbcon_bmove(vc, b - count, 0, b, 0, 1888 vc->vc_rows - b, 1889 vc->vc_cols); 1890 } else if (info->flags & FBINFO_READS_FAST) 1891 fbcon_bmove(vc, t + count, 0, t, 0, 1892 b - t - count, vc->vc_cols); 1893 else 1894 goto redraw_up; 1895 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1896 break; 1897 1898 case SCROLL_PAN_REDRAW: 1899 if ((p->yscroll + count <= 1900 2 * (p->vrows - vc->vc_rows)) 1901 && ((!scroll_partial && (b - t == vc->vc_rows)) 1902 || (scroll_partial 1903 && (b - t - count > 1904 3 * vc->vc_rows >> 2)))) { 1905 if (t > 0) 1906 fbcon_redraw_move(vc, p, 0, t, count); 1907 ypan_up_redraw(vc, t, count); 1908 if (vc->vc_rows - b > 0) 1909 fbcon_redraw_move(vc, p, b, 1910 vc->vc_rows - b, b); 1911 } else 1912 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1913 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1914 break; 1915 1916 case SCROLL_PAN_MOVE: 1917 if ((p->yscroll + count <= 1918 2 * (p->vrows - vc->vc_rows)) 1919 && ((!scroll_partial && (b - t == vc->vc_rows)) 1920 || (scroll_partial 1921 && (b - t - count > 1922 3 * vc->vc_rows >> 2)))) { 1923 if (t > 0) 1924 fbcon_bmove(vc, 0, 0, count, 0, t, 1925 vc->vc_cols); 1926 ypan_up(vc, count); 1927 if (vc->vc_rows - b > 0) 1928 fbcon_bmove(vc, b - count, 0, b, 0, 1929 vc->vc_rows - b, 1930 vc->vc_cols); 1931 } else if (info->flags & FBINFO_READS_FAST) 1932 fbcon_bmove(vc, t + count, 0, t, 0, 1933 b - t - count, vc->vc_cols); 1934 else 1935 goto redraw_up; 1936 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1937 break; 1938 1939 case SCROLL_REDRAW: 1940 redraw_up: 1941 fbcon_redraw(vc, p, t, b - t - count, 1942 count * vc->vc_cols); 1943 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1944 scr_memsetw((unsigned short *) (vc->vc_origin + 1945 vc->vc_size_row * 1946 (b - count)), 1947 vc->vc_video_erase_char, 1948 vc->vc_size_row * count); 1949 return true; 1950 } 1951 break; 1952 1953 case SM_DOWN: 1954 if (count > vc->vc_rows) /* Maximum realistic size */ 1955 count = vc->vc_rows; 1956 if (logo_shown >= 0) 1957 goto redraw_down; 1958 switch (p->scrollmode) { 1959 case SCROLL_MOVE: 1960 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1961 -count); 1962 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1963 scr_memsetw((unsigned short *) (vc->vc_origin + 1964 vc->vc_size_row * 1965 t), 1966 vc->vc_video_erase_char, 1967 vc->vc_size_row * count); 1968 return true; 1969 break; 1970 1971 case SCROLL_WRAP_MOVE: 1972 if (b - t - count > 3 * vc->vc_rows >> 2) { 1973 if (vc->vc_rows - b > 0) 1974 fbcon_bmove(vc, b, 0, b - count, 0, 1975 vc->vc_rows - b, 1976 vc->vc_cols); 1977 ywrap_down(vc, count); 1978 if (t > 0) 1979 fbcon_bmove(vc, count, 0, 0, 0, t, 1980 vc->vc_cols); 1981 } else if (info->flags & FBINFO_READS_FAST) 1982 fbcon_bmove(vc, t, 0, t + count, 0, 1983 b - t - count, vc->vc_cols); 1984 else 1985 goto redraw_down; 1986 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1987 break; 1988 1989 case SCROLL_PAN_MOVE: 1990 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1991 && ((!scroll_partial && (b - t == vc->vc_rows)) 1992 || (scroll_partial 1993 && (b - t - count > 1994 3 * vc->vc_rows >> 2)))) { 1995 if (vc->vc_rows - b > 0) 1996 fbcon_bmove(vc, b, 0, b - count, 0, 1997 vc->vc_rows - b, 1998 vc->vc_cols); 1999 ypan_down(vc, count); 2000 if (t > 0) 2001 fbcon_bmove(vc, count, 0, 0, 0, t, 2002 vc->vc_cols); 2003 } else if (info->flags & FBINFO_READS_FAST) 2004 fbcon_bmove(vc, t, 0, t + count, 0, 2005 b - t - count, vc->vc_cols); 2006 else 2007 goto redraw_down; 2008 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2009 break; 2010 2011 case SCROLL_PAN_REDRAW: 2012 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 2013 && ((!scroll_partial && (b - t == vc->vc_rows)) 2014 || (scroll_partial 2015 && (b - t - count > 2016 3 * vc->vc_rows >> 2)))) { 2017 if (vc->vc_rows - b > 0) 2018 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 2019 b - count); 2020 ypan_down_redraw(vc, t, count); 2021 if (t > 0) 2022 fbcon_redraw_move(vc, p, count, t, 0); 2023 } else 2024 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 2025 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2026 break; 2027 2028 case SCROLL_REDRAW: 2029 redraw_down: 2030 fbcon_redraw(vc, p, b - 1, b - t - count, 2031 -count * vc->vc_cols); 2032 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2033 scr_memsetw((unsigned short *) (vc->vc_origin + 2034 vc->vc_size_row * 2035 t), 2036 vc->vc_video_erase_char, 2037 vc->vc_size_row * count); 2038 return true; 2039 } 2040 } 2041 return false; 2042 } 2043 2044 2045 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 2046 int height, int width) 2047 { 2048 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2049 struct display *p = &fb_display[vc->vc_num]; 2050 2051 if (fbcon_is_inactive(vc, info)) 2052 return; 2053 2054 if (!width || !height) 2055 return; 2056 2057 /* Split blits that cross physical y_wrap case. 2058 * Pathological case involves 4 blits, better to use recursive 2059 * code rather than unrolled case 2060 * 2061 * Recursive invocations don't need to erase the cursor over and 2062 * over again, so we use fbcon_bmove_rec() 2063 */ 2064 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 2065 p->vrows - p->yscroll); 2066 } 2067 2068 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, 2069 int dy, int dx, int height, int width, u_int y_break) 2070 { 2071 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2072 struct fbcon_ops *ops = info->fbcon_par; 2073 u_int b; 2074 2075 if (sy < y_break && sy + height > y_break) { 2076 b = y_break - sy; 2077 if (dy < sy) { /* Avoid trashing self */ 2078 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2079 y_break); 2080 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2081 height - b, width, y_break); 2082 } else { 2083 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2084 height - b, width, y_break); 2085 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2086 y_break); 2087 } 2088 return; 2089 } 2090 2091 if (dy < y_break && dy + height > y_break) { 2092 b = y_break - dy; 2093 if (dy < sy) { /* Avoid trashing self */ 2094 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2095 y_break); 2096 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2097 height - b, width, y_break); 2098 } else { 2099 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2100 height - b, width, y_break); 2101 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2102 y_break); 2103 } 2104 return; 2105 } 2106 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 2107 height, width); 2108 } 2109 2110 static void updatescrollmode(struct display *p, 2111 struct fb_info *info, 2112 struct vc_data *vc) 2113 { 2114 struct fbcon_ops *ops = info->fbcon_par; 2115 int fh = vc->vc_font.height; 2116 int cap = info->flags; 2117 u16 t = 0; 2118 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 2119 info->fix.xpanstep); 2120 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 2121 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2122 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 2123 info->var.xres_virtual); 2124 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 2125 divides(ypan, vc->vc_font.height) && vyres > yres; 2126 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 2127 divides(ywrap, vc->vc_font.height) && 2128 divides(vc->vc_font.height, vyres) && 2129 divides(vc->vc_font.height, yres); 2130 int reading_fast = cap & FBINFO_READS_FAST; 2131 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 2132 !(cap & FBINFO_HWACCEL_DISABLED); 2133 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 2134 !(cap & FBINFO_HWACCEL_DISABLED); 2135 2136 p->vrows = vyres/fh; 2137 if (yres > (fh * (vc->vc_rows + 1))) 2138 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 2139 if ((yres % fh) && (vyres % fh < yres % fh)) 2140 p->vrows--; 2141 2142 if (good_wrap || good_pan) { 2143 if (reading_fast || fast_copyarea) 2144 p->scrollmode = good_wrap ? 2145 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 2146 else 2147 p->scrollmode = good_wrap ? SCROLL_REDRAW : 2148 SCROLL_PAN_REDRAW; 2149 } else { 2150 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2151 p->scrollmode = SCROLL_MOVE; 2152 else 2153 p->scrollmode = SCROLL_REDRAW; 2154 } 2155 } 2156 2157 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2158 unsigned int height, unsigned int user) 2159 { 2160 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2161 struct fbcon_ops *ops = info->fbcon_par; 2162 struct display *p = &fb_display[vc->vc_num]; 2163 struct fb_var_screeninfo var = info->var; 2164 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2165 2166 virt_w = FBCON_SWAP(ops->rotate, width, height); 2167 virt_h = FBCON_SWAP(ops->rotate, height, width); 2168 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2169 vc->vc_font.height); 2170 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2171 vc->vc_font.width); 2172 var.xres = virt_w * virt_fw; 2173 var.yres = virt_h * virt_fh; 2174 x_diff = info->var.xres - var.xres; 2175 y_diff = info->var.yres - var.yres; 2176 if (x_diff < 0 || x_diff > virt_fw || 2177 y_diff < 0 || y_diff > virt_fh) { 2178 const struct fb_videomode *mode; 2179 2180 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2181 mode = fb_find_best_mode(&var, &info->modelist); 2182 if (mode == NULL) 2183 return -EINVAL; 2184 display_to_var(&var, p); 2185 fb_videomode_to_var(&var, mode); 2186 2187 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2188 return -EINVAL; 2189 2190 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2191 if (con_is_visible(vc)) { 2192 var.activate = FB_ACTIVATE_NOW | 2193 FB_ACTIVATE_FORCE; 2194 fb_set_var(info, &var); 2195 } 2196 var_to_display(p, &info->var, info); 2197 ops->var = info->var; 2198 } 2199 updatescrollmode(p, info, vc); 2200 return 0; 2201 } 2202 2203 static int fbcon_switch(struct vc_data *vc) 2204 { 2205 struct fb_info *info, *old_info = NULL; 2206 struct fbcon_ops *ops; 2207 struct display *p = &fb_display[vc->vc_num]; 2208 struct fb_var_screeninfo var; 2209 int i, ret, prev_console, charcnt = 256; 2210 2211 info = registered_fb[con2fb_map[vc->vc_num]]; 2212 ops = info->fbcon_par; 2213 2214 if (softback_top) { 2215 if (softback_lines) 2216 fbcon_set_origin(vc); 2217 softback_top = softback_curr = softback_in = softback_buf; 2218 softback_lines = 0; 2219 fbcon_update_softback(vc); 2220 } 2221 2222 if (logo_shown >= 0) { 2223 struct vc_data *conp2 = vc_cons[logo_shown].d; 2224 2225 if (conp2->vc_top == logo_lines 2226 && conp2->vc_bottom == conp2->vc_rows) 2227 conp2->vc_top = 0; 2228 logo_shown = FBCON_LOGO_CANSHOW; 2229 } 2230 2231 prev_console = ops->currcon; 2232 if (prev_console != -1) 2233 old_info = registered_fb[con2fb_map[prev_console]]; 2234 /* 2235 * FIXME: If we have multiple fbdev's loaded, we need to 2236 * update all info->currcon. Perhaps, we can place this 2237 * in a centralized structure, but this might break some 2238 * drivers. 2239 * 2240 * info->currcon = vc->vc_num; 2241 */ 2242 for_each_registered_fb(i) { 2243 if (registered_fb[i]->fbcon_par) { 2244 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2245 2246 o->currcon = vc->vc_num; 2247 } 2248 } 2249 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2250 display_to_var(&var, p); 2251 var.activate = FB_ACTIVATE_NOW; 2252 2253 /* 2254 * make sure we don't unnecessarily trip the memcmp() 2255 * in fb_set_var() 2256 */ 2257 info->var.activate = var.activate; 2258 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2259 fb_set_var(info, &var); 2260 ops->var = info->var; 2261 2262 if (old_info != NULL && (old_info != info || 2263 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2264 if (info->fbops->fb_set_par) { 2265 ret = info->fbops->fb_set_par(info); 2266 2267 if (ret) 2268 printk(KERN_ERR "fbcon_switch: detected " 2269 "unhandled fb_set_par error, " 2270 "error code %d\n", ret); 2271 } 2272 2273 if (old_info != info) 2274 fbcon_del_cursor_timer(old_info); 2275 } 2276 2277 if (fbcon_is_inactive(vc, info) || 2278 ops->blank_state != FB_BLANK_UNBLANK) 2279 fbcon_del_cursor_timer(info); 2280 else 2281 fbcon_add_cursor_timer(info); 2282 2283 set_blitting_type(vc, info); 2284 ops->cursor_reset = 1; 2285 2286 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2287 ops->rotate = FB_ROTATE_UR; 2288 set_blitting_type(vc, info); 2289 } 2290 2291 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2292 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2293 2294 if (p->userfont) 2295 charcnt = FNTCHARCNT(vc->vc_font.data); 2296 2297 if (charcnt > 256) 2298 vc->vc_complement_mask <<= 1; 2299 2300 updatescrollmode(p, info, vc); 2301 2302 switch (p->scrollmode) { 2303 case SCROLL_WRAP_MOVE: 2304 scrollback_phys_max = p->vrows - vc->vc_rows; 2305 break; 2306 case SCROLL_PAN_MOVE: 2307 case SCROLL_PAN_REDRAW: 2308 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2309 if (scrollback_phys_max < 0) 2310 scrollback_phys_max = 0; 2311 break; 2312 default: 2313 scrollback_phys_max = 0; 2314 break; 2315 } 2316 2317 scrollback_max = 0; 2318 scrollback_current = 0; 2319 2320 if (!fbcon_is_inactive(vc, info)) { 2321 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2322 ops->update_start(info); 2323 } 2324 2325 fbcon_set_palette(vc, color_table); 2326 fbcon_clear_margins(vc, 0); 2327 2328 if (logo_shown == FBCON_LOGO_DRAW) { 2329 2330 logo_shown = fg_console; 2331 /* This is protected above by initmem_freed */ 2332 fb_show_logo(info, ops->rotate); 2333 update_region(vc, 2334 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2335 vc->vc_size_row * (vc->vc_bottom - 2336 vc->vc_top) / 2); 2337 return 0; 2338 } 2339 return 1; 2340 } 2341 2342 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2343 int blank) 2344 { 2345 struct fb_event event; 2346 2347 if (blank) { 2348 unsigned short charmask = vc->vc_hi_font_mask ? 2349 0x1ff : 0xff; 2350 unsigned short oldc; 2351 2352 oldc = vc->vc_video_erase_char; 2353 vc->vc_video_erase_char &= charmask; 2354 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2355 vc->vc_video_erase_char = oldc; 2356 } 2357 2358 2359 if (!lock_fb_info(info)) 2360 return; 2361 event.info = info; 2362 event.data = ␣ 2363 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event); 2364 unlock_fb_info(info); 2365 } 2366 2367 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2368 { 2369 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2370 struct fbcon_ops *ops = info->fbcon_par; 2371 2372 if (mode_switch) { 2373 struct fb_var_screeninfo var = info->var; 2374 2375 ops->graphics = 1; 2376 2377 if (!blank) { 2378 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; 2379 fb_set_var(info, &var); 2380 ops->graphics = 0; 2381 ops->var = info->var; 2382 } 2383 } 2384 2385 if (!fbcon_is_inactive(vc, info)) { 2386 if (ops->blank_state != blank) { 2387 ops->blank_state = blank; 2388 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2389 ops->cursor_flash = (!blank); 2390 2391 if (!(info->flags & FBINFO_MISC_USEREVENT)) 2392 if (fb_blank(info, blank)) 2393 fbcon_generic_blank(vc, info, blank); 2394 } 2395 2396 if (!blank) 2397 update_screen(vc); 2398 } 2399 2400 if (mode_switch || fbcon_is_inactive(vc, info) || 2401 ops->blank_state != FB_BLANK_UNBLANK) 2402 fbcon_del_cursor_timer(info); 2403 else 2404 fbcon_add_cursor_timer(info); 2405 2406 return 0; 2407 } 2408 2409 static int fbcon_debug_enter(struct vc_data *vc) 2410 { 2411 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2412 struct fbcon_ops *ops = info->fbcon_par; 2413 2414 ops->save_graphics = ops->graphics; 2415 ops->graphics = 0; 2416 if (info->fbops->fb_debug_enter) 2417 info->fbops->fb_debug_enter(info); 2418 fbcon_set_palette(vc, color_table); 2419 return 0; 2420 } 2421 2422 static int fbcon_debug_leave(struct vc_data *vc) 2423 { 2424 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2425 struct fbcon_ops *ops = info->fbcon_par; 2426 2427 ops->graphics = ops->save_graphics; 2428 if (info->fbops->fb_debug_leave) 2429 info->fbops->fb_debug_leave(info); 2430 return 0; 2431 } 2432 2433 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2434 { 2435 u8 *fontdata = vc->vc_font.data; 2436 u8 *data = font->data; 2437 int i, j; 2438 2439 font->width = vc->vc_font.width; 2440 font->height = vc->vc_font.height; 2441 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2442 if (!font->data) 2443 return 0; 2444 2445 if (font->width <= 8) { 2446 j = vc->vc_font.height; 2447 for (i = 0; i < font->charcount; i++) { 2448 memcpy(data, fontdata, j); 2449 memset(data + j, 0, 32 - j); 2450 data += 32; 2451 fontdata += j; 2452 } 2453 } else if (font->width <= 16) { 2454 j = vc->vc_font.height * 2; 2455 for (i = 0; i < font->charcount; i++) { 2456 memcpy(data, fontdata, j); 2457 memset(data + j, 0, 64 - j); 2458 data += 64; 2459 fontdata += j; 2460 } 2461 } else if (font->width <= 24) { 2462 for (i = 0; i < font->charcount; i++) { 2463 for (j = 0; j < vc->vc_font.height; j++) { 2464 *data++ = fontdata[0]; 2465 *data++ = fontdata[1]; 2466 *data++ = fontdata[2]; 2467 fontdata += sizeof(u32); 2468 } 2469 memset(data, 0, 3 * (32 - j)); 2470 data += 3 * (32 - j); 2471 } 2472 } else { 2473 j = vc->vc_font.height * 4; 2474 for (i = 0; i < font->charcount; i++) { 2475 memcpy(data, fontdata, j); 2476 memset(data + j, 0, 128 - j); 2477 data += 128; 2478 fontdata += j; 2479 } 2480 } 2481 return 0; 2482 } 2483 2484 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2485 static void set_vc_hi_font(struct vc_data *vc, bool set) 2486 { 2487 if (!set) { 2488 vc->vc_hi_font_mask = 0; 2489 if (vc->vc_can_do_color) { 2490 vc->vc_complement_mask >>= 1; 2491 vc->vc_s_complement_mask >>= 1; 2492 } 2493 2494 /* ++Edmund: reorder the attribute bits */ 2495 if (vc->vc_can_do_color) { 2496 unsigned short *cp = 2497 (unsigned short *) vc->vc_origin; 2498 int count = vc->vc_screenbuf_size / 2; 2499 unsigned short c; 2500 for (; count > 0; count--, cp++) { 2501 c = scr_readw(cp); 2502 scr_writew(((c & 0xfe00) >> 1) | 2503 (c & 0xff), cp); 2504 } 2505 c = vc->vc_video_erase_char; 2506 vc->vc_video_erase_char = 2507 ((c & 0xfe00) >> 1) | (c & 0xff); 2508 vc->vc_attr >>= 1; 2509 } 2510 } else { 2511 vc->vc_hi_font_mask = 0x100; 2512 if (vc->vc_can_do_color) { 2513 vc->vc_complement_mask <<= 1; 2514 vc->vc_s_complement_mask <<= 1; 2515 } 2516 2517 /* ++Edmund: reorder the attribute bits */ 2518 { 2519 unsigned short *cp = 2520 (unsigned short *) vc->vc_origin; 2521 int count = vc->vc_screenbuf_size / 2; 2522 unsigned short c; 2523 for (; count > 0; count--, cp++) { 2524 unsigned short newc; 2525 c = scr_readw(cp); 2526 if (vc->vc_can_do_color) 2527 newc = 2528 ((c & 0xff00) << 1) | (c & 2529 0xff); 2530 else 2531 newc = c & ~0x100; 2532 scr_writew(newc, cp); 2533 } 2534 c = vc->vc_video_erase_char; 2535 if (vc->vc_can_do_color) { 2536 vc->vc_video_erase_char = 2537 ((c & 0xff00) << 1) | (c & 0xff); 2538 vc->vc_attr <<= 1; 2539 } else 2540 vc->vc_video_erase_char = c & ~0x100; 2541 } 2542 } 2543 } 2544 2545 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2546 const u8 * data, int userfont) 2547 { 2548 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2549 struct fbcon_ops *ops = info->fbcon_par; 2550 struct display *p = &fb_display[vc->vc_num]; 2551 int resize; 2552 int cnt; 2553 char *old_data = NULL; 2554 2555 if (con_is_visible(vc) && softback_lines) 2556 fbcon_set_origin(vc); 2557 2558 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2559 if (p->userfont) 2560 old_data = vc->vc_font.data; 2561 if (userfont) 2562 cnt = FNTCHARCNT(data); 2563 else 2564 cnt = 256; 2565 vc->vc_font.data = (void *)(p->fontdata = data); 2566 if ((p->userfont = userfont)) 2567 REFCOUNT(data)++; 2568 vc->vc_font.width = w; 2569 vc->vc_font.height = h; 2570 if (vc->vc_hi_font_mask && cnt == 256) 2571 set_vc_hi_font(vc, false); 2572 else if (!vc->vc_hi_font_mask && cnt == 512) 2573 set_vc_hi_font(vc, true); 2574 2575 if (resize) { 2576 int cols, rows; 2577 2578 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2579 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2580 cols /= w; 2581 rows /= h; 2582 vc_resize(vc, cols, rows); 2583 if (con_is_visible(vc) && softback_buf) 2584 fbcon_update_softback(vc); 2585 } else if (con_is_visible(vc) 2586 && vc->vc_mode == KD_TEXT) { 2587 fbcon_clear_margins(vc, 0); 2588 update_screen(vc); 2589 } 2590 2591 if (old_data && (--REFCOUNT(old_data) == 0)) 2592 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2593 return 0; 2594 } 2595 2596 static int fbcon_copy_font(struct vc_data *vc, int con) 2597 { 2598 struct display *od = &fb_display[con]; 2599 struct console_font *f = &vc->vc_font; 2600 2601 if (od->fontdata == f->data) 2602 return 0; /* already the same font... */ 2603 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2604 } 2605 2606 /* 2607 * User asked to set font; we are guaranteed that 2608 * a) width and height are in range 1..32 2609 * b) charcount does not exceed 512 2610 * but lets not assume that, since someone might someday want to use larger 2611 * fonts. And charcount of 512 is small for unicode support. 2612 * 2613 * However, user space gives the font in 32 rows , regardless of 2614 * actual font height. So a new API is needed if support for larger fonts 2615 * is ever implemented. 2616 */ 2617 2618 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, 2619 unsigned int flags) 2620 { 2621 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2622 unsigned charcount = font->charcount; 2623 int w = font->width; 2624 int h = font->height; 2625 int size; 2626 int i, csum; 2627 u8 *new_data, *data = font->data; 2628 int pitch = (font->width+7) >> 3; 2629 2630 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2631 * If not this check should be changed to charcount < 256 */ 2632 if (charcount != 256 && charcount != 512) 2633 return -EINVAL; 2634 2635 /* Make sure drawing engine can handle the font */ 2636 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2637 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2638 return -EINVAL; 2639 2640 /* Make sure driver can handle the font length */ 2641 if (fbcon_invalid_charcount(info, charcount)) 2642 return -EINVAL; 2643 2644 size = h * pitch * charcount; 2645 2646 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2647 2648 if (!new_data) 2649 return -ENOMEM; 2650 2651 new_data += FONT_EXTRA_WORDS * sizeof(int); 2652 FNTSIZE(new_data) = size; 2653 FNTCHARCNT(new_data) = charcount; 2654 REFCOUNT(new_data) = 0; /* usage counter */ 2655 for (i=0; i< charcount; i++) { 2656 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2657 } 2658 2659 /* Since linux has a nice crc32 function use it for counting font 2660 * checksums. */ 2661 csum = crc32(0, new_data, size); 2662 2663 FNTSUM(new_data) = csum; 2664 /* Check if the same font is on some other console already */ 2665 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2666 struct vc_data *tmp = vc_cons[i].d; 2667 2668 if (fb_display[i].userfont && 2669 fb_display[i].fontdata && 2670 FNTSUM(fb_display[i].fontdata) == csum && 2671 FNTSIZE(fb_display[i].fontdata) == size && 2672 tmp->vc_font.width == w && 2673 !memcmp(fb_display[i].fontdata, new_data, size)) { 2674 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2675 new_data = (u8 *)fb_display[i].fontdata; 2676 break; 2677 } 2678 } 2679 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2680 } 2681 2682 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2683 { 2684 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2685 const struct font_desc *f; 2686 2687 if (!name) 2688 f = get_default_font(info->var.xres, info->var.yres, 2689 info->pixmap.blit_x, info->pixmap.blit_y); 2690 else if (!(f = find_font(name))) 2691 return -ENOENT; 2692 2693 font->width = f->width; 2694 font->height = f->height; 2695 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2696 } 2697 2698 static u16 palette_red[16]; 2699 static u16 palette_green[16]; 2700 static u16 palette_blue[16]; 2701 2702 static struct fb_cmap palette_cmap = { 2703 0, 16, palette_red, palette_green, palette_blue, NULL 2704 }; 2705 2706 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2707 { 2708 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2709 int i, j, k, depth; 2710 u8 val; 2711 2712 if (fbcon_is_inactive(vc, info)) 2713 return; 2714 2715 if (!con_is_visible(vc)) 2716 return; 2717 2718 depth = fb_get_color_depth(&info->var, &info->fix); 2719 if (depth > 3) { 2720 for (i = j = 0; i < 16; i++) { 2721 k = table[i]; 2722 val = vc->vc_palette[j++]; 2723 palette_red[k] = (val << 8) | val; 2724 val = vc->vc_palette[j++]; 2725 palette_green[k] = (val << 8) | val; 2726 val = vc->vc_palette[j++]; 2727 palette_blue[k] = (val << 8) | val; 2728 } 2729 palette_cmap.len = 16; 2730 palette_cmap.start = 0; 2731 /* 2732 * If framebuffer is capable of less than 16 colors, 2733 * use default palette of fbcon. 2734 */ 2735 } else 2736 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2737 2738 fb_set_cmap(&palette_cmap, info); 2739 } 2740 2741 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) 2742 { 2743 unsigned long p; 2744 int line; 2745 2746 if (vc->vc_num != fg_console || !softback_lines) 2747 return (u16 *) (vc->vc_origin + offset); 2748 line = offset / vc->vc_size_row; 2749 if (line >= softback_lines) 2750 return (u16 *) (vc->vc_origin + offset - 2751 softback_lines * vc->vc_size_row); 2752 p = softback_curr + offset; 2753 if (p >= softback_end) 2754 p += softback_buf - softback_end; 2755 return (u16 *) p; 2756 } 2757 2758 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2759 int *px, int *py) 2760 { 2761 unsigned long ret; 2762 int x, y; 2763 2764 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2765 unsigned long offset = (pos - vc->vc_origin) / 2; 2766 2767 x = offset % vc->vc_cols; 2768 y = offset / vc->vc_cols; 2769 if (vc->vc_num == fg_console) 2770 y += softback_lines; 2771 ret = pos + (vc->vc_cols - x) * 2; 2772 } else if (vc->vc_num == fg_console && softback_lines) { 2773 unsigned long offset = pos - softback_curr; 2774 2775 if (pos < softback_curr) 2776 offset += softback_end - softback_buf; 2777 offset /= 2; 2778 x = offset % vc->vc_cols; 2779 y = offset / vc->vc_cols; 2780 ret = pos + (vc->vc_cols - x) * 2; 2781 if (ret == softback_end) 2782 ret = softback_buf; 2783 if (ret == softback_in) 2784 ret = vc->vc_origin; 2785 } else { 2786 /* Should not happen */ 2787 x = y = 0; 2788 ret = vc->vc_origin; 2789 } 2790 if (px) 2791 *px = x; 2792 if (py) 2793 *py = y; 2794 return ret; 2795 } 2796 2797 /* As we might be inside of softback, we may work with non-contiguous buffer, 2798 that's why we have to use a separate routine. */ 2799 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2800 { 2801 while (cnt--) { 2802 u16 a = scr_readw(p); 2803 if (!vc->vc_can_do_color) 2804 a ^= 0x0800; 2805 else if (vc->vc_hi_font_mask == 0x100) 2806 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2807 (((a) & 0x0e00) << 4); 2808 else 2809 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2810 (((a) & 0x0700) << 4); 2811 scr_writew(a, p++); 2812 if (p == (u16 *) softback_end) 2813 p = (u16 *) softback_buf; 2814 if (p == (u16 *) softback_in) 2815 p = (u16 *) vc->vc_origin; 2816 } 2817 } 2818 2819 static void fbcon_scrolldelta(struct vc_data *vc, int lines) 2820 { 2821 struct fb_info *info = registered_fb[con2fb_map[fg_console]]; 2822 struct fbcon_ops *ops = info->fbcon_par; 2823 struct display *disp = &fb_display[fg_console]; 2824 int offset, limit, scrollback_old; 2825 2826 if (softback_top) { 2827 if (vc->vc_num != fg_console) 2828 return; 2829 if (vc->vc_mode != KD_TEXT || !lines) 2830 return; 2831 if (logo_shown >= 0) { 2832 struct vc_data *conp2 = vc_cons[logo_shown].d; 2833 2834 if (conp2->vc_top == logo_lines 2835 && conp2->vc_bottom == conp2->vc_rows) 2836 conp2->vc_top = 0; 2837 if (logo_shown == vc->vc_num) { 2838 unsigned long p, q; 2839 int i; 2840 2841 p = softback_in; 2842 q = vc->vc_origin + 2843 logo_lines * vc->vc_size_row; 2844 for (i = 0; i < logo_lines; i++) { 2845 if (p == softback_top) 2846 break; 2847 if (p == softback_buf) 2848 p = softback_end; 2849 p -= vc->vc_size_row; 2850 q -= vc->vc_size_row; 2851 scr_memcpyw((u16 *) q, (u16 *) p, 2852 vc->vc_size_row); 2853 } 2854 softback_in = softback_curr = p; 2855 update_region(vc, vc->vc_origin, 2856 logo_lines * vc->vc_cols); 2857 } 2858 logo_shown = FBCON_LOGO_CANSHOW; 2859 } 2860 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); 2861 fbcon_redraw_softback(vc, disp, lines); 2862 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); 2863 return; 2864 } 2865 2866 if (!scrollback_phys_max) 2867 return; 2868 2869 scrollback_old = scrollback_current; 2870 scrollback_current -= lines; 2871 if (scrollback_current < 0) 2872 scrollback_current = 0; 2873 else if (scrollback_current > scrollback_max) 2874 scrollback_current = scrollback_max; 2875 if (scrollback_current == scrollback_old) 2876 return; 2877 2878 if (fbcon_is_inactive(vc, info)) 2879 return; 2880 2881 fbcon_cursor(vc, CM_ERASE); 2882 2883 offset = disp->yscroll - scrollback_current; 2884 limit = disp->vrows; 2885 switch (disp->scrollmode) { 2886 case SCROLL_WRAP_MOVE: 2887 info->var.vmode |= FB_VMODE_YWRAP; 2888 break; 2889 case SCROLL_PAN_MOVE: 2890 case SCROLL_PAN_REDRAW: 2891 limit -= vc->vc_rows; 2892 info->var.vmode &= ~FB_VMODE_YWRAP; 2893 break; 2894 } 2895 if (offset < 0) 2896 offset += limit; 2897 else if (offset >= limit) 2898 offset -= limit; 2899 2900 ops->var.xoffset = 0; 2901 ops->var.yoffset = offset * vc->vc_font.height; 2902 ops->update_start(info); 2903 2904 if (!scrollback_current) 2905 fbcon_cursor(vc, CM_DRAW); 2906 } 2907 2908 static int fbcon_set_origin(struct vc_data *vc) 2909 { 2910 if (softback_lines) 2911 fbcon_scrolldelta(vc, softback_lines); 2912 return 0; 2913 } 2914 2915 static void fbcon_suspended(struct fb_info *info) 2916 { 2917 struct vc_data *vc = NULL; 2918 struct fbcon_ops *ops = info->fbcon_par; 2919 2920 if (!ops || ops->currcon < 0) 2921 return; 2922 vc = vc_cons[ops->currcon].d; 2923 2924 /* Clear cursor, restore saved data */ 2925 fbcon_cursor(vc, CM_ERASE); 2926 } 2927 2928 static void fbcon_resumed(struct fb_info *info) 2929 { 2930 struct vc_data *vc; 2931 struct fbcon_ops *ops = info->fbcon_par; 2932 2933 if (!ops || ops->currcon < 0) 2934 return; 2935 vc = vc_cons[ops->currcon].d; 2936 2937 update_screen(vc); 2938 } 2939 2940 static void fbcon_modechanged(struct fb_info *info) 2941 { 2942 struct fbcon_ops *ops = info->fbcon_par; 2943 struct vc_data *vc; 2944 struct display *p; 2945 int rows, cols; 2946 2947 if (!ops || ops->currcon < 0) 2948 return; 2949 vc = vc_cons[ops->currcon].d; 2950 if (vc->vc_mode != KD_TEXT || 2951 registered_fb[con2fb_map[ops->currcon]] != info) 2952 return; 2953 2954 p = &fb_display[vc->vc_num]; 2955 set_blitting_type(vc, info); 2956 2957 if (con_is_visible(vc)) { 2958 var_to_display(p, &info->var, info); 2959 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2960 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2961 cols /= vc->vc_font.width; 2962 rows /= vc->vc_font.height; 2963 vc_resize(vc, cols, rows); 2964 updatescrollmode(p, info, vc); 2965 scrollback_max = 0; 2966 scrollback_current = 0; 2967 2968 if (!fbcon_is_inactive(vc, info)) { 2969 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2970 ops->update_start(info); 2971 } 2972 2973 fbcon_set_palette(vc, color_table); 2974 update_screen(vc); 2975 if (softback_buf) 2976 fbcon_update_softback(vc); 2977 } 2978 } 2979 2980 static void fbcon_set_all_vcs(struct fb_info *info) 2981 { 2982 struct fbcon_ops *ops = info->fbcon_par; 2983 struct vc_data *vc; 2984 struct display *p; 2985 int i, rows, cols, fg = -1; 2986 2987 if (!ops || ops->currcon < 0) 2988 return; 2989 2990 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2991 vc = vc_cons[i].d; 2992 if (!vc || vc->vc_mode != KD_TEXT || 2993 registered_fb[con2fb_map[i]] != info) 2994 continue; 2995 2996 if (con_is_visible(vc)) { 2997 fg = i; 2998 continue; 2999 } 3000 3001 p = &fb_display[vc->vc_num]; 3002 set_blitting_type(vc, info); 3003 var_to_display(p, &info->var, info); 3004 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 3005 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 3006 cols /= vc->vc_font.width; 3007 rows /= vc->vc_font.height; 3008 vc_resize(vc, cols, rows); 3009 } 3010 3011 if (fg != -1) 3012 fbcon_modechanged(info); 3013 } 3014 3015 static int fbcon_mode_deleted(struct fb_info *info, 3016 struct fb_videomode *mode) 3017 { 3018 struct fb_info *fb_info; 3019 struct display *p; 3020 int i, j, found = 0; 3021 3022 /* before deletion, ensure that mode is not in use */ 3023 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3024 j = con2fb_map[i]; 3025 if (j == -1) 3026 continue; 3027 fb_info = registered_fb[j]; 3028 if (fb_info != info) 3029 continue; 3030 p = &fb_display[i]; 3031 if (!p || !p->mode) 3032 continue; 3033 if (fb_mode_is_equal(p->mode, mode)) { 3034 found = 1; 3035 break; 3036 } 3037 } 3038 return found; 3039 } 3040 3041 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 3042 static int fbcon_unbind(void) 3043 { 3044 int ret; 3045 3046 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 3047 fbcon_is_default); 3048 3049 if (!ret) 3050 fbcon_has_console_bind = 0; 3051 3052 return ret; 3053 } 3054 #else 3055 static inline int fbcon_unbind(void) 3056 { 3057 return -EINVAL; 3058 } 3059 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 3060 3061 /* called with console_lock held */ 3062 static int fbcon_fb_unbind(int idx) 3063 { 3064 int i, new_idx = -1, ret = 0; 3065 3066 WARN_CONSOLE_UNLOCKED(); 3067 3068 if (!fbcon_has_console_bind) 3069 return 0; 3070 3071 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3072 if (con2fb_map[i] != idx && 3073 con2fb_map[i] != -1) { 3074 new_idx = con2fb_map[i]; 3075 break; 3076 } 3077 } 3078 3079 if (new_idx != -1) { 3080 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3081 if (con2fb_map[i] == idx) 3082 set_con2fb_map(i, new_idx, 0); 3083 } 3084 } else { 3085 struct fb_info *info = registered_fb[idx]; 3086 3087 /* This is sort of like set_con2fb_map, except it maps 3088 * the consoles to no device and then releases the 3089 * oldinfo to free memory and cancel the cursor blink 3090 * timer. I can imagine this just becoming part of 3091 * set_con2fb_map where new_idx is -1 3092 */ 3093 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3094 if (con2fb_map[i] == idx) { 3095 con2fb_map[i] = -1; 3096 if (!search_fb_in_map(idx)) { 3097 ret = con2fb_release_oldinfo(vc_cons[i].d, 3098 info, NULL, i, 3099 idx, 0); 3100 if (ret) { 3101 con2fb_map[i] = idx; 3102 return ret; 3103 } 3104 } 3105 } 3106 } 3107 ret = fbcon_unbind(); 3108 } 3109 3110 return ret; 3111 } 3112 3113 /* called with console_lock held */ 3114 static int fbcon_fb_unregistered(struct fb_info *info) 3115 { 3116 int i, idx; 3117 3118 WARN_CONSOLE_UNLOCKED(); 3119 3120 if (deferred_takeover) 3121 return 0; 3122 3123 idx = info->node; 3124 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3125 if (con2fb_map[i] == idx) 3126 con2fb_map[i] = -1; 3127 } 3128 3129 if (idx == info_idx) { 3130 info_idx = -1; 3131 3132 for_each_registered_fb(i) { 3133 info_idx = i; 3134 break; 3135 } 3136 } 3137 3138 if (info_idx != -1) { 3139 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3140 if (con2fb_map[i] == -1) 3141 con2fb_map[i] = info_idx; 3142 } 3143 } 3144 3145 if (primary_device == idx) 3146 primary_device = -1; 3147 3148 if (!num_registered_fb) 3149 do_unregister_con_driver(&fb_con); 3150 3151 return 0; 3152 } 3153 3154 /* called with console_lock held */ 3155 static void fbcon_remap_all(int idx) 3156 { 3157 int i; 3158 3159 WARN_CONSOLE_UNLOCKED(); 3160 3161 if (deferred_takeover) { 3162 for (i = first_fb_vc; i <= last_fb_vc; i++) 3163 con2fb_map_boot[i] = idx; 3164 fbcon_map_override(); 3165 return; 3166 } 3167 3168 for (i = first_fb_vc; i <= last_fb_vc; i++) 3169 set_con2fb_map(i, idx, 0); 3170 3171 if (con_is_bound(&fb_con)) { 3172 printk(KERN_INFO "fbcon: Remapping primary device, " 3173 "fb%i, to tty %i-%i\n", idx, 3174 first_fb_vc + 1, last_fb_vc + 1); 3175 info_idx = idx; 3176 } 3177 } 3178 3179 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 3180 static void fbcon_select_primary(struct fb_info *info) 3181 { 3182 if (!map_override && primary_device == -1 && 3183 fb_is_primary_device(info)) { 3184 int i; 3185 3186 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 3187 info->fix.id, info->node); 3188 primary_device = info->node; 3189 3190 for (i = first_fb_vc; i <= last_fb_vc; i++) 3191 con2fb_map_boot[i] = primary_device; 3192 3193 if (con_is_bound(&fb_con)) { 3194 printk(KERN_INFO "fbcon: Remapping primary device, " 3195 "fb%i, to tty %i-%i\n", info->node, 3196 first_fb_vc + 1, last_fb_vc + 1); 3197 info_idx = primary_device; 3198 } 3199 } 3200 3201 } 3202 #else 3203 static inline void fbcon_select_primary(struct fb_info *info) 3204 { 3205 return; 3206 } 3207 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 3208 3209 /* called with console_lock held */ 3210 static int fbcon_fb_registered(struct fb_info *info) 3211 { 3212 int ret = 0, i, idx; 3213 3214 WARN_CONSOLE_UNLOCKED(); 3215 3216 idx = info->node; 3217 fbcon_select_primary(info); 3218 3219 if (deferred_takeover) { 3220 pr_info("fbcon: Deferring console take-over\n"); 3221 return 0; 3222 } 3223 3224 if (info_idx == -1) { 3225 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3226 if (con2fb_map_boot[i] == idx) { 3227 info_idx = idx; 3228 break; 3229 } 3230 } 3231 3232 if (info_idx != -1) 3233 ret = do_fbcon_takeover(1); 3234 } else { 3235 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3236 if (con2fb_map_boot[i] == idx) 3237 set_con2fb_map(i, idx, 0); 3238 } 3239 } 3240 3241 return ret; 3242 } 3243 3244 static void fbcon_fb_blanked(struct fb_info *info, int blank) 3245 { 3246 struct fbcon_ops *ops = info->fbcon_par; 3247 struct vc_data *vc; 3248 3249 if (!ops || ops->currcon < 0) 3250 return; 3251 3252 vc = vc_cons[ops->currcon].d; 3253 if (vc->vc_mode != KD_TEXT || 3254 registered_fb[con2fb_map[ops->currcon]] != info) 3255 return; 3256 3257 if (con_is_visible(vc)) { 3258 if (blank) 3259 do_blank_screen(0); 3260 else 3261 do_unblank_screen(0); 3262 } 3263 ops->blank_state = blank; 3264 } 3265 3266 static void fbcon_new_modelist(struct fb_info *info) 3267 { 3268 int i; 3269 struct vc_data *vc; 3270 struct fb_var_screeninfo var; 3271 const struct fb_videomode *mode; 3272 3273 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3274 if (registered_fb[con2fb_map[i]] != info) 3275 continue; 3276 if (!fb_display[i].mode) 3277 continue; 3278 vc = vc_cons[i].d; 3279 display_to_var(&var, &fb_display[i]); 3280 mode = fb_find_nearest_mode(fb_display[i].mode, 3281 &info->modelist); 3282 fb_videomode_to_var(&var, mode); 3283 fbcon_set_disp(info, &var, vc->vc_num); 3284 } 3285 } 3286 3287 static void fbcon_get_requirement(struct fb_info *info, 3288 struct fb_blit_caps *caps) 3289 { 3290 struct vc_data *vc; 3291 struct display *p; 3292 3293 if (caps->flags) { 3294 int i, charcnt; 3295 3296 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3297 vc = vc_cons[i].d; 3298 if (vc && vc->vc_mode == KD_TEXT && 3299 info->node == con2fb_map[i]) { 3300 p = &fb_display[i]; 3301 caps->x |= 1 << (vc->vc_font.width - 1); 3302 caps->y |= 1 << (vc->vc_font.height - 1); 3303 charcnt = (p->userfont) ? 3304 FNTCHARCNT(p->fontdata) : 256; 3305 if (caps->len < charcnt) 3306 caps->len = charcnt; 3307 } 3308 } 3309 } else { 3310 vc = vc_cons[fg_console].d; 3311 3312 if (vc && vc->vc_mode == KD_TEXT && 3313 info->node == con2fb_map[fg_console]) { 3314 p = &fb_display[fg_console]; 3315 caps->x = 1 << (vc->vc_font.width - 1); 3316 caps->y = 1 << (vc->vc_font.height - 1); 3317 caps->len = (p->userfont) ? 3318 FNTCHARCNT(p->fontdata) : 256; 3319 } 3320 } 3321 } 3322 3323 static int fbcon_event_notify(struct notifier_block *self, 3324 unsigned long action, void *data) 3325 { 3326 struct fb_event *event = data; 3327 struct fb_info *info = event->info; 3328 struct fb_videomode *mode; 3329 struct fb_con2fbmap *con2fb; 3330 struct fb_blit_caps *caps; 3331 int idx, ret = 0; 3332 3333 /* 3334 * ignore all events except driver registration and deregistration 3335 * if fbcon is not active 3336 */ 3337 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED || 3338 action == FB_EVENT_FB_UNREGISTERED)) 3339 goto done; 3340 3341 switch(action) { 3342 case FB_EVENT_SUSPEND: 3343 fbcon_suspended(info); 3344 break; 3345 case FB_EVENT_RESUME: 3346 fbcon_resumed(info); 3347 break; 3348 case FB_EVENT_MODE_CHANGE: 3349 fbcon_modechanged(info); 3350 break; 3351 case FB_EVENT_MODE_CHANGE_ALL: 3352 fbcon_set_all_vcs(info); 3353 break; 3354 case FB_EVENT_MODE_DELETE: 3355 mode = event->data; 3356 ret = fbcon_mode_deleted(info, mode); 3357 break; 3358 case FB_EVENT_FB_UNBIND: 3359 idx = info->node; 3360 ret = fbcon_fb_unbind(idx); 3361 break; 3362 case FB_EVENT_FB_REGISTERED: 3363 ret = fbcon_fb_registered(info); 3364 break; 3365 case FB_EVENT_FB_UNREGISTERED: 3366 ret = fbcon_fb_unregistered(info); 3367 break; 3368 case FB_EVENT_SET_CONSOLE_MAP: 3369 /* called with console lock held */ 3370 con2fb = event->data; 3371 ret = set_con2fb_map(con2fb->console - 1, 3372 con2fb->framebuffer, 1); 3373 break; 3374 case FB_EVENT_GET_CONSOLE_MAP: 3375 con2fb = event->data; 3376 con2fb->framebuffer = con2fb_map[con2fb->console - 1]; 3377 break; 3378 case FB_EVENT_BLANK: 3379 fbcon_fb_blanked(info, *(int *)event->data); 3380 break; 3381 case FB_EVENT_NEW_MODELIST: 3382 fbcon_new_modelist(info); 3383 break; 3384 case FB_EVENT_GET_REQ: 3385 caps = event->data; 3386 fbcon_get_requirement(info, caps); 3387 break; 3388 case FB_EVENT_REMAP_ALL_CONSOLE: 3389 idx = info->node; 3390 fbcon_remap_all(idx); 3391 break; 3392 } 3393 done: 3394 return ret; 3395 } 3396 3397 /* 3398 * The console `switch' structure for the frame buffer based console 3399 */ 3400 3401 static const struct consw fb_con = { 3402 .owner = THIS_MODULE, 3403 .con_startup = fbcon_startup, 3404 .con_init = fbcon_init, 3405 .con_deinit = fbcon_deinit, 3406 .con_clear = fbcon_clear, 3407 .con_putc = fbcon_putc, 3408 .con_putcs = fbcon_putcs, 3409 .con_cursor = fbcon_cursor, 3410 .con_scroll = fbcon_scroll, 3411 .con_switch = fbcon_switch, 3412 .con_blank = fbcon_blank, 3413 .con_font_set = fbcon_set_font, 3414 .con_font_get = fbcon_get_font, 3415 .con_font_default = fbcon_set_def_font, 3416 .con_font_copy = fbcon_copy_font, 3417 .con_set_palette = fbcon_set_palette, 3418 .con_scrolldelta = fbcon_scrolldelta, 3419 .con_set_origin = fbcon_set_origin, 3420 .con_invert_region = fbcon_invert_region, 3421 .con_screen_pos = fbcon_screen_pos, 3422 .con_getxy = fbcon_getxy, 3423 .con_resize = fbcon_resize, 3424 .con_debug_enter = fbcon_debug_enter, 3425 .con_debug_leave = fbcon_debug_leave, 3426 }; 3427 3428 static struct notifier_block fbcon_event_notifier = { 3429 .notifier_call = fbcon_event_notify, 3430 }; 3431 3432 static ssize_t store_rotate(struct device *device, 3433 struct device_attribute *attr, const char *buf, 3434 size_t count) 3435 { 3436 struct fb_info *info; 3437 int rotate, idx; 3438 char **last = NULL; 3439 3440 if (fbcon_has_exited) 3441 return count; 3442 3443 console_lock(); 3444 idx = con2fb_map[fg_console]; 3445 3446 if (idx == -1 || registered_fb[idx] == NULL) 3447 goto err; 3448 3449 info = registered_fb[idx]; 3450 rotate = simple_strtoul(buf, last, 0); 3451 fbcon_rotate(info, rotate); 3452 err: 3453 console_unlock(); 3454 return count; 3455 } 3456 3457 static ssize_t store_rotate_all(struct device *device, 3458 struct device_attribute *attr,const char *buf, 3459 size_t count) 3460 { 3461 struct fb_info *info; 3462 int rotate, idx; 3463 char **last = NULL; 3464 3465 if (fbcon_has_exited) 3466 return count; 3467 3468 console_lock(); 3469 idx = con2fb_map[fg_console]; 3470 3471 if (idx == -1 || registered_fb[idx] == NULL) 3472 goto err; 3473 3474 info = registered_fb[idx]; 3475 rotate = simple_strtoul(buf, last, 0); 3476 fbcon_rotate_all(info, rotate); 3477 err: 3478 console_unlock(); 3479 return count; 3480 } 3481 3482 static ssize_t show_rotate(struct device *device, 3483 struct device_attribute *attr,char *buf) 3484 { 3485 struct fb_info *info; 3486 int rotate = 0, idx; 3487 3488 if (fbcon_has_exited) 3489 return 0; 3490 3491 console_lock(); 3492 idx = con2fb_map[fg_console]; 3493 3494 if (idx == -1 || registered_fb[idx] == NULL) 3495 goto err; 3496 3497 info = registered_fb[idx]; 3498 rotate = fbcon_get_rotate(info); 3499 err: 3500 console_unlock(); 3501 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3502 } 3503 3504 static ssize_t show_cursor_blink(struct device *device, 3505 struct device_attribute *attr, char *buf) 3506 { 3507 struct fb_info *info; 3508 struct fbcon_ops *ops; 3509 int idx, blink = -1; 3510 3511 if (fbcon_has_exited) 3512 return 0; 3513 3514 console_lock(); 3515 idx = con2fb_map[fg_console]; 3516 3517 if (idx == -1 || registered_fb[idx] == NULL) 3518 goto err; 3519 3520 info = registered_fb[idx]; 3521 ops = info->fbcon_par; 3522 3523 if (!ops) 3524 goto err; 3525 3526 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3527 err: 3528 console_unlock(); 3529 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3530 } 3531 3532 static ssize_t store_cursor_blink(struct device *device, 3533 struct device_attribute *attr, 3534 const char *buf, size_t count) 3535 { 3536 struct fb_info *info; 3537 int blink, idx; 3538 char **last = NULL; 3539 3540 if (fbcon_has_exited) 3541 return count; 3542 3543 console_lock(); 3544 idx = con2fb_map[fg_console]; 3545 3546 if (idx == -1 || registered_fb[idx] == NULL) 3547 goto err; 3548 3549 info = registered_fb[idx]; 3550 3551 if (!info->fbcon_par) 3552 goto err; 3553 3554 blink = simple_strtoul(buf, last, 0); 3555 3556 if (blink) { 3557 fbcon_cursor_noblink = 0; 3558 fbcon_add_cursor_timer(info); 3559 } else { 3560 fbcon_cursor_noblink = 1; 3561 fbcon_del_cursor_timer(info); 3562 } 3563 3564 err: 3565 console_unlock(); 3566 return count; 3567 } 3568 3569 static struct device_attribute device_attrs[] = { 3570 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3571 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3572 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3573 store_cursor_blink), 3574 }; 3575 3576 static int fbcon_init_device(void) 3577 { 3578 int i, error = 0; 3579 3580 fbcon_has_sysfs = 1; 3581 3582 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3583 error = device_create_file(fbcon_device, &device_attrs[i]); 3584 3585 if (error) 3586 break; 3587 } 3588 3589 if (error) { 3590 while (--i >= 0) 3591 device_remove_file(fbcon_device, &device_attrs[i]); 3592 3593 fbcon_has_sysfs = 0; 3594 } 3595 3596 return 0; 3597 } 3598 3599 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3600 static void fbcon_register_existing_fbs(struct work_struct *work) 3601 { 3602 int i; 3603 3604 console_lock(); 3605 3606 for_each_registered_fb(i) 3607 fbcon_fb_registered(registered_fb[i]); 3608 3609 console_unlock(); 3610 } 3611 3612 static struct notifier_block fbcon_output_nb; 3613 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); 3614 3615 static int fbcon_output_notifier(struct notifier_block *nb, 3616 unsigned long action, void *data) 3617 { 3618 WARN_CONSOLE_UNLOCKED(); 3619 3620 pr_info("fbcon: Taking over console\n"); 3621 3622 dummycon_unregister_output_notifier(&fbcon_output_nb); 3623 deferred_takeover = false; 3624 logo_shown = FBCON_LOGO_DONTSHOW; 3625 3626 /* We may get called in atomic context */ 3627 schedule_work(&fbcon_deferred_takeover_work); 3628 3629 return NOTIFY_OK; 3630 } 3631 #endif 3632 3633 static void fbcon_start(void) 3634 { 3635 WARN_CONSOLE_UNLOCKED(); 3636 3637 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3638 if (conswitchp != &dummy_con) 3639 deferred_takeover = false; 3640 3641 if (deferred_takeover) { 3642 fbcon_output_nb.notifier_call = fbcon_output_notifier; 3643 dummycon_register_output_notifier(&fbcon_output_nb); 3644 return; 3645 } 3646 #endif 3647 3648 if (num_registered_fb) { 3649 int i; 3650 3651 for_each_registered_fb(i) { 3652 info_idx = i; 3653 break; 3654 } 3655 3656 do_fbcon_takeover(0); 3657 } 3658 } 3659 3660 static void fbcon_exit(void) 3661 { 3662 struct fb_info *info; 3663 int i, j, mapped; 3664 3665 if (fbcon_has_exited) 3666 return; 3667 3668 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3669 if (deferred_takeover) { 3670 dummycon_unregister_output_notifier(&fbcon_output_nb); 3671 deferred_takeover = false; 3672 } 3673 #endif 3674 3675 kfree((void *)softback_buf); 3676 softback_buf = 0UL; 3677 3678 for_each_registered_fb(i) { 3679 int pending = 0; 3680 3681 mapped = 0; 3682 info = registered_fb[i]; 3683 3684 if (info->queue.func) 3685 pending = cancel_work_sync(&info->queue); 3686 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3687 "no")); 3688 3689 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3690 if (con2fb_map[j] == i) { 3691 mapped = 1; 3692 break; 3693 } 3694 } 3695 3696 if (mapped) { 3697 if (info->fbops->fb_release) 3698 info->fbops->fb_release(info, 0); 3699 module_put(info->fbops->owner); 3700 3701 if (info->fbcon_par) { 3702 struct fbcon_ops *ops = info->fbcon_par; 3703 3704 fbcon_del_cursor_timer(info); 3705 kfree(ops->cursor_src); 3706 kfree(ops->cursor_state.mask); 3707 kfree(info->fbcon_par); 3708 info->fbcon_par = NULL; 3709 } 3710 3711 if (info->queue.func == fb_flashcursor) 3712 info->queue.func = NULL; 3713 } 3714 } 3715 3716 fbcon_has_exited = 1; 3717 } 3718 3719 void __init fb_console_init(void) 3720 { 3721 int i; 3722 3723 console_lock(); 3724 fb_register_client(&fbcon_event_notifier); 3725 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3726 "fbcon"); 3727 3728 if (IS_ERR(fbcon_device)) { 3729 printk(KERN_WARNING "Unable to create device " 3730 "for fbcon; errno = %ld\n", 3731 PTR_ERR(fbcon_device)); 3732 fbcon_device = NULL; 3733 } else 3734 fbcon_init_device(); 3735 3736 for (i = 0; i < MAX_NR_CONSOLES; i++) 3737 con2fb_map[i] = -1; 3738 3739 fbcon_start(); 3740 console_unlock(); 3741 } 3742 3743 #ifdef MODULE 3744 3745 static void __exit fbcon_deinit_device(void) 3746 { 3747 int i; 3748 3749 if (fbcon_has_sysfs) { 3750 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3751 device_remove_file(fbcon_device, &device_attrs[i]); 3752 3753 fbcon_has_sysfs = 0; 3754 } 3755 } 3756 3757 void __exit fb_console_exit(void) 3758 { 3759 console_lock(); 3760 fb_unregister_client(&fbcon_event_notifier); 3761 fbcon_deinit_device(); 3762 device_destroy(fb_class, MKDEV(0, 0)); 3763 fbcon_exit(); 3764 do_unregister_con_driver(&fb_con); 3765 console_unlock(); 3766 } 3767 #endif 3768