1 /* 2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver 3 * 4 * Copyright (C) 1995 Geert Uytterhoeven 5 * 6 * 7 * This file is based on the original Amiga console driver (amicon.c): 8 * 9 * Copyright (C) 1993 Hamish Macdonald 10 * Greg Harp 11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk] 12 * 13 * with work by William Rucklidge (wjr@cs.cornell.edu) 14 * Geert Uytterhoeven 15 * Jes Sorensen (jds@kom.auc.dk) 16 * Martin Apel 17 * 18 * and on the original Atari console driver (atacon.c): 19 * 20 * Copyright (C) 1993 Bjoern Brauel 21 * Roman Hodek 22 * 23 * with work by Guenther Kelleter 24 * Martin Schaller 25 * Andreas Schwab 26 * 27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org) 28 * Smart redraw scrolling, arbitrary font width support, 512char font support 29 * and software scrollback added by 30 * Jakub Jelinek (jj@ultra.linux.cz) 31 * 32 * Random hacking by Martin Mares <mj@ucw.cz> 33 * 34 * 2001 - Documented with DocBook 35 * - Brad Douglas <brad@neruo.com> 36 * 37 * The low level operations for the various display memory organizations are 38 * now in separate source files. 39 * 40 * Currently the following organizations are supported: 41 * 42 * o afb Amiga bitplanes 43 * o cfb{2,4,8,16,24,32} Packed pixels 44 * o ilbm Amiga interleaved bitplanes 45 * o iplan2p[248] Atari interleaved bitplanes 46 * o mfb Monochrome 47 * o vga VGA characters/attributes 48 * 49 * To do: 50 * 51 * - Implement 16 plane mode (iplan2p16) 52 * 53 * 54 * This file is subject to the terms and conditions of the GNU General Public 55 * License. See the file COPYING in the main directory of this archive for 56 * more details. 57 */ 58 59 #undef FBCONDEBUG 60 61 #include <linux/module.h> 62 #include <linux/types.h> 63 #include <linux/fs.h> 64 #include <linux/kernel.h> 65 #include <linux/delay.h> /* MSch: for IRQ probe */ 66 #include <linux/console.h> 67 #include <linux/string.h> 68 #include <linux/kd.h> 69 #include <linux/slab.h> 70 #include <linux/fb.h> 71 #include <linux/fbcon.h> 72 #include <linux/vt_kern.h> 73 #include <linux/selection.h> 74 #include <linux/font.h> 75 #include <linux/smp.h> 76 #include <linux/init.h> 77 #include <linux/interrupt.h> 78 #include <linux/crc32.h> /* For counting font checksums */ 79 #include <linux/uaccess.h> 80 #include <asm/fb.h> 81 #include <asm/irq.h> 82 83 #include "fbcon.h" 84 85 #ifdef FBCONDEBUG 86 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args) 87 #else 88 # define DPRINTK(fmt, args...) 89 #endif 90 91 /* 92 * FIXME: Locking 93 * 94 * - fbcon state itself is protected by the console_lock, and the code does a 95 * pretty good job at making sure that lock is held everywhere it's needed. 96 * 97 * - access to the registered_fb array is entirely unprotected. This should use 98 * proper object lifetime handling, i.e. get/put_fb_info. This also means 99 * switching from indices to proper pointers for fb_info everywhere. 100 * 101 * - fbcon doesn't bother with fb_lock/unlock at all. This is buggy, since it 102 * means concurrent access to the same fbdev from both fbcon and userspace 103 * will blow up. To fix this all fbcon calls from fbmem.c need to be moved out 104 * of fb_lock/unlock protected sections, since otherwise we'll recurse and 105 * deadlock eventually. Aside: Due to these deadlock issues the fbdev code in 106 * fbmem.c cannot use locking asserts, and there's lots of callers which get 107 * the rules wrong, e.g. fbsysfs.c entirely missed fb_lock/unlock calls too. 108 */ 109 110 enum { 111 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */ 112 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */ 113 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */ 114 }; 115 116 static struct fbcon_display fb_display[MAX_NR_CONSOLES]; 117 118 static signed char con2fb_map[MAX_NR_CONSOLES]; 119 static signed char con2fb_map_boot[MAX_NR_CONSOLES]; 120 121 static int logo_lines; 122 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO 123 enums. */ 124 static int logo_shown = FBCON_LOGO_CANSHOW; 125 /* Software scrollback */ 126 static int fbcon_softback_size = 32768; 127 static unsigned long softback_buf, softback_curr; 128 static unsigned long softback_in; 129 static unsigned long softback_top, softback_end; 130 static int softback_lines; 131 /* console mappings */ 132 static int first_fb_vc; 133 static int last_fb_vc = MAX_NR_CONSOLES - 1; 134 static int fbcon_is_default = 1; 135 static int primary_device = -1; 136 static int fbcon_has_console_bind; 137 138 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 139 static int map_override; 140 141 static inline void fbcon_map_override(void) 142 { 143 map_override = 1; 144 } 145 #else 146 static inline void fbcon_map_override(void) 147 { 148 } 149 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */ 150 151 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 152 static bool deferred_takeover = true; 153 #else 154 #define deferred_takeover false 155 #endif 156 157 /* font data */ 158 static char fontname[40]; 159 160 /* current fb_info */ 161 static int info_idx = -1; 162 163 /* console rotation */ 164 static int initial_rotation = -1; 165 static int fbcon_has_sysfs; 166 static int margin_color; 167 168 static const struct consw fb_con; 169 170 #define CM_SOFTBACK (8) 171 172 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) 173 174 static int fbcon_set_origin(struct vc_data *); 175 176 static int fbcon_cursor_noblink; 177 178 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) 179 180 /* 181 * Interface used by the world 182 */ 183 184 static const char *fbcon_startup(void); 185 static void fbcon_init(struct vc_data *vc, int init); 186 static void fbcon_deinit(struct vc_data *vc); 187 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 188 int width); 189 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); 190 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 191 int count, int ypos, int xpos); 192 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); 193 static void fbcon_cursor(struct vc_data *vc, int mode); 194 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 195 int height, int width); 196 static int fbcon_switch(struct vc_data *vc); 197 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); 198 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table); 199 200 /* 201 * Internal routines 202 */ 203 static __inline__ void ywrap_up(struct vc_data *vc, int count); 204 static __inline__ void ywrap_down(struct vc_data *vc, int count); 205 static __inline__ void ypan_up(struct vc_data *vc, int count); 206 static __inline__ void ypan_down(struct vc_data *vc, int count); 207 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, 208 int dy, int dx, int height, int width, u_int y_break); 209 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 210 int unit); 211 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, 212 int line, int count, int dy); 213 static void fbcon_modechanged(struct fb_info *info); 214 static void fbcon_set_all_vcs(struct fb_info *info); 215 static void fbcon_start(void); 216 static void fbcon_exit(void); 217 static struct device *fbcon_device; 218 219 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION 220 static inline void fbcon_set_rotation(struct fb_info *info) 221 { 222 struct fbcon_ops *ops = info->fbcon_par; 223 224 if (!(info->flags & FBINFO_MISC_TILEBLITTING) && 225 ops->p->con_rotate < 4) 226 ops->rotate = ops->p->con_rotate; 227 else 228 ops->rotate = 0; 229 } 230 231 static void fbcon_rotate(struct fb_info *info, u32 rotate) 232 { 233 struct fbcon_ops *ops= info->fbcon_par; 234 struct fb_info *fb_info; 235 236 if (!ops || ops->currcon == -1) 237 return; 238 239 fb_info = registered_fb[con2fb_map[ops->currcon]]; 240 241 if (info == fb_info) { 242 struct fbcon_display *p = &fb_display[ops->currcon]; 243 244 if (rotate < 4) 245 p->con_rotate = rotate; 246 else 247 p->con_rotate = 0; 248 249 fbcon_modechanged(info); 250 } 251 } 252 253 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 254 { 255 struct fbcon_ops *ops = info->fbcon_par; 256 struct vc_data *vc; 257 struct fbcon_display *p; 258 int i; 259 260 if (!ops || ops->currcon < 0 || rotate > 3) 261 return; 262 263 for (i = first_fb_vc; i <= last_fb_vc; i++) { 264 vc = vc_cons[i].d; 265 if (!vc || vc->vc_mode != KD_TEXT || 266 registered_fb[con2fb_map[i]] != info) 267 continue; 268 269 p = &fb_display[vc->vc_num]; 270 p->con_rotate = rotate; 271 } 272 273 fbcon_set_all_vcs(info); 274 } 275 #else 276 static inline void fbcon_set_rotation(struct fb_info *info) 277 { 278 struct fbcon_ops *ops = info->fbcon_par; 279 280 ops->rotate = FB_ROTATE_UR; 281 } 282 283 static void fbcon_rotate(struct fb_info *info, u32 rotate) 284 { 285 return; 286 } 287 288 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 289 { 290 return; 291 } 292 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ 293 294 static int fbcon_get_rotate(struct fb_info *info) 295 { 296 struct fbcon_ops *ops = info->fbcon_par; 297 298 return (ops) ? ops->rotate : 0; 299 } 300 301 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) 302 { 303 struct fbcon_ops *ops = info->fbcon_par; 304 305 return (info->state != FBINFO_STATE_RUNNING || 306 vc->vc_mode != KD_TEXT || ops->graphics); 307 } 308 309 static int get_color(struct vc_data *vc, struct fb_info *info, 310 u16 c, int is_fg) 311 { 312 int depth = fb_get_color_depth(&info->var, &info->fix); 313 int color = 0; 314 315 if (console_blanked) { 316 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; 317 318 c = vc->vc_video_erase_char & charmask; 319 } 320 321 if (depth != 1) 322 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) 323 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); 324 325 switch (depth) { 326 case 1: 327 { 328 int col = mono_col(info); 329 /* 0 or 1 */ 330 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; 331 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; 332 333 if (console_blanked) 334 fg = bg; 335 336 color = (is_fg) ? fg : bg; 337 break; 338 } 339 case 2: 340 /* 341 * Scale down 16-colors to 4 colors. Default 4-color palette 342 * is grayscale. However, simply dividing the values by 4 343 * will not work, as colors 1, 2 and 3 will be scaled-down 344 * to zero rendering them invisible. So empirically convert 345 * colors to a sane 4-level grayscale. 346 */ 347 switch (color) { 348 case 0: 349 color = 0; /* black */ 350 break; 351 case 1 ... 6: 352 color = 2; /* white */ 353 break; 354 case 7 ... 8: 355 color = 1; /* gray */ 356 break; 357 default: 358 color = 3; /* intense white */ 359 break; 360 } 361 break; 362 case 3: 363 /* 364 * Last 8 entries of default 16-color palette is a more intense 365 * version of the first 8 (i.e., same chrominance, different 366 * luminance). 367 */ 368 color &= 7; 369 break; 370 } 371 372 373 return color; 374 } 375 376 static void fbcon_update_softback(struct vc_data *vc) 377 { 378 int l = fbcon_softback_size / vc->vc_size_row; 379 380 if (l > 5) 381 softback_end = softback_buf + l * vc->vc_size_row; 382 else 383 /* Smaller scrollback makes no sense, and 0 would screw 384 the operation totally */ 385 softback_top = 0; 386 } 387 388 static void fb_flashcursor(struct work_struct *work) 389 { 390 struct fb_info *info = container_of(work, struct fb_info, queue); 391 struct fbcon_ops *ops = info->fbcon_par; 392 struct vc_data *vc = NULL; 393 int c; 394 int mode; 395 int ret; 396 397 /* FIXME: we should sort out the unbind locking instead */ 398 /* instead we just fail to flash the cursor if we can't get 399 * the lock instead of blocking fbcon deinit */ 400 ret = console_trylock(); 401 if (ret == 0) 402 return; 403 404 if (ops && ops->currcon != -1) 405 vc = vc_cons[ops->currcon].d; 406 407 if (!vc || !con_is_visible(vc) || 408 registered_fb[con2fb_map[vc->vc_num]] != info || 409 vc->vc_deccm != 1) { 410 console_unlock(); 411 return; 412 } 413 414 c = scr_readw((u16 *) vc->vc_pos); 415 mode = (!ops->cursor_flash || ops->cursor_state.enable) ? 416 CM_ERASE : CM_DRAW; 417 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1), 418 get_color(vc, info, c, 0)); 419 console_unlock(); 420 } 421 422 static void cursor_timer_handler(struct timer_list *t) 423 { 424 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer); 425 struct fb_info *info = ops->info; 426 427 queue_work(system_power_efficient_wq, &info->queue); 428 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 429 } 430 431 static void fbcon_add_cursor_timer(struct fb_info *info) 432 { 433 struct fbcon_ops *ops = info->fbcon_par; 434 435 if ((!info->queue.func || info->queue.func == fb_flashcursor) && 436 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) && 437 !fbcon_cursor_noblink) { 438 if (!info->queue.func) 439 INIT_WORK(&info->queue, fb_flashcursor); 440 441 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0); 442 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 443 ops->flags |= FBCON_FLAGS_CURSOR_TIMER; 444 } 445 } 446 447 static void fbcon_del_cursor_timer(struct fb_info *info) 448 { 449 struct fbcon_ops *ops = info->fbcon_par; 450 451 if (info->queue.func == fb_flashcursor && 452 ops->flags & FBCON_FLAGS_CURSOR_TIMER) { 453 del_timer_sync(&ops->cursor_timer); 454 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; 455 } 456 } 457 458 #ifndef MODULE 459 static int __init fb_console_setup(char *this_opt) 460 { 461 char *options; 462 int i, j; 463 464 if (!this_opt || !*this_opt) 465 return 1; 466 467 while ((options = strsep(&this_opt, ",")) != NULL) { 468 if (!strncmp(options, "font:", 5)) { 469 strlcpy(fontname, options + 5, sizeof(fontname)); 470 continue; 471 } 472 473 if (!strncmp(options, "scrollback:", 11)) { 474 options += 11; 475 if (*options) { 476 fbcon_softback_size = simple_strtoul(options, &options, 0); 477 if (*options == 'k' || *options == 'K') { 478 fbcon_softback_size *= 1024; 479 } 480 } 481 continue; 482 } 483 484 if (!strncmp(options, "map:", 4)) { 485 options += 4; 486 if (*options) { 487 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { 488 if (!options[j]) 489 j = 0; 490 con2fb_map_boot[i] = 491 (options[j++]-'0') % FB_MAX; 492 } 493 494 fbcon_map_override(); 495 } 496 continue; 497 } 498 499 if (!strncmp(options, "vc:", 3)) { 500 options += 3; 501 if (*options) 502 first_fb_vc = simple_strtoul(options, &options, 10) - 1; 503 if (first_fb_vc < 0) 504 first_fb_vc = 0; 505 if (*options++ == '-') 506 last_fb_vc = simple_strtoul(options, &options, 10) - 1; 507 fbcon_is_default = 0; 508 continue; 509 } 510 511 if (!strncmp(options, "rotate:", 7)) { 512 options += 7; 513 if (*options) 514 initial_rotation = simple_strtoul(options, &options, 0); 515 if (initial_rotation > 3) 516 initial_rotation = 0; 517 continue; 518 } 519 520 if (!strncmp(options, "margin:", 7)) { 521 options += 7; 522 if (*options) 523 margin_color = simple_strtoul(options, &options, 0); 524 continue; 525 } 526 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 527 if (!strcmp(options, "nodefer")) { 528 deferred_takeover = false; 529 continue; 530 } 531 #endif 532 533 if (!strncmp(options, "logo-pos:", 9)) { 534 options += 9; 535 if (!strcmp(options, "center")) 536 fb_center_logo = true; 537 continue; 538 } 539 540 if (!strncmp(options, "logo-count:", 11)) { 541 options += 11; 542 if (*options) 543 fb_logo_count = simple_strtol(options, &options, 0); 544 continue; 545 } 546 } 547 return 1; 548 } 549 550 __setup("fbcon=", fb_console_setup); 551 #endif 552 553 static int search_fb_in_map(int idx) 554 { 555 int i, retval = 0; 556 557 for (i = first_fb_vc; i <= last_fb_vc; i++) { 558 if (con2fb_map[i] == idx) 559 retval = 1; 560 } 561 return retval; 562 } 563 564 static int search_for_mapped_con(void) 565 { 566 int i, retval = 0; 567 568 for (i = first_fb_vc; i <= last_fb_vc; i++) { 569 if (con2fb_map[i] != -1) 570 retval = 1; 571 } 572 return retval; 573 } 574 575 static int do_fbcon_takeover(int show_logo) 576 { 577 int err, i; 578 579 if (!num_registered_fb) 580 return -ENODEV; 581 582 if (!show_logo) 583 logo_shown = FBCON_LOGO_DONTSHOW; 584 585 for (i = first_fb_vc; i <= last_fb_vc; i++) 586 con2fb_map[i] = info_idx; 587 588 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, 589 fbcon_is_default); 590 591 if (err) { 592 for (i = first_fb_vc; i <= last_fb_vc; i++) 593 con2fb_map[i] = -1; 594 info_idx = -1; 595 } else { 596 fbcon_has_console_bind = 1; 597 } 598 599 return err; 600 } 601 602 #ifdef MODULE 603 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 604 int cols, int rows, int new_cols, int new_rows) 605 { 606 logo_shown = FBCON_LOGO_DONTSHOW; 607 } 608 #else 609 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 610 int cols, int rows, int new_cols, int new_rows) 611 { 612 /* Need to make room for the logo */ 613 struct fbcon_ops *ops = info->fbcon_par; 614 int cnt, erase = vc->vc_video_erase_char, step; 615 unsigned short *save = NULL, *r, *q; 616 int logo_height; 617 618 if (info->fbops->owner) { 619 logo_shown = FBCON_LOGO_DONTSHOW; 620 return; 621 } 622 623 /* 624 * remove underline attribute from erase character 625 * if black and white framebuffer. 626 */ 627 if (fb_get_color_depth(&info->var, &info->fix) == 1) 628 erase &= ~0x400; 629 logo_height = fb_prepare_logo(info, ops->rotate); 630 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); 631 q = (unsigned short *) (vc->vc_origin + 632 vc->vc_size_row * rows); 633 step = logo_lines * cols; 634 for (r = q - logo_lines * cols; r < q; r++) 635 if (scr_readw(r) != vc->vc_video_erase_char) 636 break; 637 if (r != q && new_rows >= rows + logo_lines) { 638 save = kmalloc(array3_size(logo_lines, new_cols, 2), 639 GFP_KERNEL); 640 if (save) { 641 int i = cols < new_cols ? cols : new_cols; 642 scr_memsetw(save, erase, logo_lines * new_cols * 2); 643 r = q - step; 644 for (cnt = 0; cnt < logo_lines; cnt++, r += i) 645 scr_memcpyw(save + cnt * new_cols, r, 2 * i); 646 r = q; 647 } 648 } 649 if (r == q) { 650 /* We can scroll screen down */ 651 r = q - step - cols; 652 for (cnt = rows - logo_lines; cnt > 0; cnt--) { 653 scr_memcpyw(r + step, r, vc->vc_size_row); 654 r -= cols; 655 } 656 if (!save) { 657 int lines; 658 if (vc->vc_y + logo_lines >= rows) 659 lines = rows - vc->vc_y - 1; 660 else 661 lines = logo_lines; 662 vc->vc_y += lines; 663 vc->vc_pos += lines * vc->vc_size_row; 664 } 665 } 666 scr_memsetw((unsigned short *) vc->vc_origin, 667 erase, 668 vc->vc_size_row * logo_lines); 669 670 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 671 fbcon_clear_margins(vc, 0); 672 update_screen(vc); 673 } 674 675 if (save) { 676 q = (unsigned short *) (vc->vc_origin + 677 vc->vc_size_row * 678 rows); 679 scr_memcpyw(q, save, logo_lines * new_cols * 2); 680 vc->vc_y += logo_lines; 681 vc->vc_pos += logo_lines * vc->vc_size_row; 682 kfree(save); 683 } 684 685 if (logo_shown == FBCON_LOGO_DONTSHOW) 686 return; 687 688 if (logo_lines > vc->vc_bottom) { 689 logo_shown = FBCON_LOGO_CANSHOW; 690 printk(KERN_INFO 691 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 692 } else { 693 logo_shown = FBCON_LOGO_DRAW; 694 vc->vc_top = logo_lines; 695 } 696 } 697 #endif /* MODULE */ 698 699 #ifdef CONFIG_FB_TILEBLITTING 700 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 701 { 702 struct fbcon_ops *ops = info->fbcon_par; 703 704 ops->p = &fb_display[vc->vc_num]; 705 706 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 707 fbcon_set_tileops(vc, info); 708 else { 709 fbcon_set_rotation(info); 710 fbcon_set_bitops(ops); 711 } 712 } 713 714 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 715 { 716 int err = 0; 717 718 if (info->flags & FBINFO_MISC_TILEBLITTING && 719 info->tileops->fb_get_tilemax(info) < charcount) 720 err = 1; 721 722 return err; 723 } 724 #else 725 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 726 { 727 struct fbcon_ops *ops = info->fbcon_par; 728 729 info->flags &= ~FBINFO_MISC_TILEBLITTING; 730 ops->p = &fb_display[vc->vc_num]; 731 fbcon_set_rotation(info); 732 fbcon_set_bitops(ops); 733 } 734 735 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 736 { 737 return 0; 738 } 739 740 #endif /* CONFIG_MISC_TILEBLITTING */ 741 742 743 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 744 int unit, int oldidx) 745 { 746 struct fbcon_ops *ops = NULL; 747 int err = 0; 748 749 if (!try_module_get(info->fbops->owner)) 750 err = -ENODEV; 751 752 if (!err && info->fbops->fb_open && 753 info->fbops->fb_open(info, 0)) 754 err = -ENODEV; 755 756 if (!err) { 757 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 758 if (!ops) 759 err = -ENOMEM; 760 } 761 762 if (!err) { 763 ops->cur_blink_jiffies = HZ / 5; 764 ops->info = info; 765 info->fbcon_par = ops; 766 767 if (vc) 768 set_blitting_type(vc, info); 769 } 770 771 if (err) { 772 con2fb_map[unit] = oldidx; 773 module_put(info->fbops->owner); 774 } 775 776 return err; 777 } 778 779 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 780 struct fb_info *newinfo, int unit, 781 int oldidx, int found) 782 { 783 struct fbcon_ops *ops = oldinfo->fbcon_par; 784 int err = 0, ret; 785 786 if (oldinfo->fbops->fb_release && 787 oldinfo->fbops->fb_release(oldinfo, 0)) { 788 con2fb_map[unit] = oldidx; 789 if (!found && newinfo->fbops->fb_release) 790 newinfo->fbops->fb_release(newinfo, 0); 791 if (!found) 792 module_put(newinfo->fbops->owner); 793 err = -ENODEV; 794 } 795 796 if (!err) { 797 fbcon_del_cursor_timer(oldinfo); 798 kfree(ops->cursor_state.mask); 799 kfree(ops->cursor_data); 800 kfree(ops->cursor_src); 801 kfree(ops->fontbuffer); 802 kfree(oldinfo->fbcon_par); 803 oldinfo->fbcon_par = NULL; 804 module_put(oldinfo->fbops->owner); 805 /* 806 If oldinfo and newinfo are driving the same hardware, 807 the fb_release() method of oldinfo may attempt to 808 restore the hardware state. This will leave the 809 newinfo in an undefined state. Thus, a call to 810 fb_set_par() may be needed for the newinfo. 811 */ 812 if (newinfo && newinfo->fbops->fb_set_par) { 813 ret = newinfo->fbops->fb_set_par(newinfo); 814 815 if (ret) 816 printk(KERN_ERR "con2fb_release_oldinfo: " 817 "detected unhandled fb_set_par error, " 818 "error code %d\n", ret); 819 } 820 } 821 822 return err; 823 } 824 825 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 826 int unit, int show_logo) 827 { 828 struct fbcon_ops *ops = info->fbcon_par; 829 int ret; 830 831 ops->currcon = fg_console; 832 833 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 834 ret = info->fbops->fb_set_par(info); 835 836 if (ret) 837 printk(KERN_ERR "con2fb_init_display: detected " 838 "unhandled fb_set_par error, " 839 "error code %d\n", ret); 840 } 841 842 ops->flags |= FBCON_FLAGS_INIT; 843 ops->graphics = 0; 844 fbcon_set_disp(info, &info->var, unit); 845 846 if (show_logo) { 847 struct vc_data *fg_vc = vc_cons[fg_console].d; 848 struct fb_info *fg_info = 849 registered_fb[con2fb_map[fg_console]]; 850 851 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 852 fg_vc->vc_rows, fg_vc->vc_cols, 853 fg_vc->vc_rows); 854 } 855 856 update_screen(vc_cons[fg_console].d); 857 } 858 859 /** 860 * set_con2fb_map - map console to frame buffer device 861 * @unit: virtual console number to map 862 * @newidx: frame buffer index to map virtual console to 863 * @user: user request 864 * 865 * Maps a virtual console @unit to a frame buffer device 866 * @newidx. 867 * 868 * This should be called with the console lock held. 869 */ 870 static int set_con2fb_map(int unit, int newidx, int user) 871 { 872 struct vc_data *vc = vc_cons[unit].d; 873 int oldidx = con2fb_map[unit]; 874 struct fb_info *info = registered_fb[newidx]; 875 struct fb_info *oldinfo = NULL; 876 int found, err = 0; 877 878 WARN_CONSOLE_UNLOCKED(); 879 880 if (oldidx == newidx) 881 return 0; 882 883 if (!info) 884 return -EINVAL; 885 886 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 887 info_idx = newidx; 888 return do_fbcon_takeover(0); 889 } 890 891 if (oldidx != -1) 892 oldinfo = registered_fb[oldidx]; 893 894 found = search_fb_in_map(newidx); 895 896 con2fb_map[unit] = newidx; 897 if (!err && !found) 898 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 899 900 /* 901 * If old fb is not mapped to any of the consoles, 902 * fbcon should release it. 903 */ 904 if (!err && oldinfo && !search_fb_in_map(oldidx)) 905 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 906 found); 907 908 if (!err) { 909 int show_logo = (fg_console == 0 && !user && 910 logo_shown != FBCON_LOGO_DONTSHOW); 911 912 if (!found) 913 fbcon_add_cursor_timer(info); 914 con2fb_map_boot[unit] = newidx; 915 con2fb_init_display(vc, info, unit, show_logo); 916 } 917 918 if (!search_fb_in_map(info_idx)) 919 info_idx = newidx; 920 921 return err; 922 } 923 924 /* 925 * Low Level Operations 926 */ 927 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 928 static int var_to_display(struct fbcon_display *disp, 929 struct fb_var_screeninfo *var, 930 struct fb_info *info) 931 { 932 disp->xres_virtual = var->xres_virtual; 933 disp->yres_virtual = var->yres_virtual; 934 disp->bits_per_pixel = var->bits_per_pixel; 935 disp->grayscale = var->grayscale; 936 disp->nonstd = var->nonstd; 937 disp->accel_flags = var->accel_flags; 938 disp->height = var->height; 939 disp->width = var->width; 940 disp->red = var->red; 941 disp->green = var->green; 942 disp->blue = var->blue; 943 disp->transp = var->transp; 944 disp->rotate = var->rotate; 945 disp->mode = fb_match_mode(var, &info->modelist); 946 if (disp->mode == NULL) 947 /* This should not happen */ 948 return -EINVAL; 949 return 0; 950 } 951 952 static void display_to_var(struct fb_var_screeninfo *var, 953 struct fbcon_display *disp) 954 { 955 fb_videomode_to_var(var, disp->mode); 956 var->xres_virtual = disp->xres_virtual; 957 var->yres_virtual = disp->yres_virtual; 958 var->bits_per_pixel = disp->bits_per_pixel; 959 var->grayscale = disp->grayscale; 960 var->nonstd = disp->nonstd; 961 var->accel_flags = disp->accel_flags; 962 var->height = disp->height; 963 var->width = disp->width; 964 var->red = disp->red; 965 var->green = disp->green; 966 var->blue = disp->blue; 967 var->transp = disp->transp; 968 var->rotate = disp->rotate; 969 } 970 971 static const char *fbcon_startup(void) 972 { 973 const char *display_desc = "frame buffer device"; 974 struct fbcon_display *p = &fb_display[fg_console]; 975 struct vc_data *vc = vc_cons[fg_console].d; 976 const struct font_desc *font = NULL; 977 struct module *owner; 978 struct fb_info *info = NULL; 979 struct fbcon_ops *ops; 980 int rows, cols; 981 982 /* 983 * If num_registered_fb is zero, this is a call for the dummy part. 984 * The frame buffer devices weren't initialized yet. 985 */ 986 if (!num_registered_fb || info_idx == -1) 987 return display_desc; 988 /* 989 * Instead of blindly using registered_fb[0], we use info_idx, set by 990 * fb_console_init(); 991 */ 992 info = registered_fb[info_idx]; 993 if (!info) 994 return NULL; 995 996 owner = info->fbops->owner; 997 if (!try_module_get(owner)) 998 return NULL; 999 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 1000 module_put(owner); 1001 return NULL; 1002 } 1003 1004 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 1005 if (!ops) { 1006 module_put(owner); 1007 return NULL; 1008 } 1009 1010 ops->currcon = -1; 1011 ops->graphics = 1; 1012 ops->cur_rotate = -1; 1013 ops->cur_blink_jiffies = HZ / 5; 1014 ops->info = info; 1015 info->fbcon_par = ops; 1016 1017 p->con_rotate = initial_rotation; 1018 if (p->con_rotate == -1) 1019 p->con_rotate = info->fbcon_rotate_hint; 1020 if (p->con_rotate == -1) 1021 p->con_rotate = FB_ROTATE_UR; 1022 1023 set_blitting_type(vc, info); 1024 1025 if (info->fix.type != FB_TYPE_TEXT) { 1026 if (fbcon_softback_size) { 1027 if (!softback_buf) { 1028 softback_buf = 1029 (unsigned long) 1030 kvmalloc(fbcon_softback_size, 1031 GFP_KERNEL); 1032 if (!softback_buf) { 1033 fbcon_softback_size = 0; 1034 softback_top = 0; 1035 } 1036 } 1037 } else { 1038 if (softback_buf) { 1039 kvfree((void *) softback_buf); 1040 softback_buf = 0; 1041 softback_top = 0; 1042 } 1043 } 1044 if (softback_buf) 1045 softback_in = softback_top = softback_curr = 1046 softback_buf; 1047 softback_lines = 0; 1048 } 1049 1050 /* Setup default font */ 1051 if (!p->fontdata && !vc->vc_font.data) { 1052 if (!fontname[0] || !(font = find_font(fontname))) 1053 font = get_default_font(info->var.xres, 1054 info->var.yres, 1055 info->pixmap.blit_x, 1056 info->pixmap.blit_y); 1057 vc->vc_font.width = font->width; 1058 vc->vc_font.height = font->height; 1059 vc->vc_font.data = (void *)(p->fontdata = font->data); 1060 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1061 } else { 1062 p->fontdata = vc->vc_font.data; 1063 } 1064 1065 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1066 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1067 cols /= vc->vc_font.width; 1068 rows /= vc->vc_font.height; 1069 vc_resize(vc, cols, rows); 1070 1071 DPRINTK("mode: %s\n", info->fix.id); 1072 DPRINTK("visual: %d\n", info->fix.visual); 1073 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1074 info->var.yres, 1075 info->var.bits_per_pixel); 1076 1077 fbcon_add_cursor_timer(info); 1078 return display_desc; 1079 } 1080 1081 static void fbcon_init(struct vc_data *vc, int init) 1082 { 1083 struct fb_info *info; 1084 struct fbcon_ops *ops; 1085 struct vc_data **default_mode = vc->vc_display_fg; 1086 struct vc_data *svc = *default_mode; 1087 struct fbcon_display *t, *p = &fb_display[vc->vc_num]; 1088 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1089 int cap, ret; 1090 1091 if (WARN_ON(info_idx == -1)) 1092 return; 1093 1094 if (con2fb_map[vc->vc_num] == -1) 1095 con2fb_map[vc->vc_num] = info_idx; 1096 1097 info = registered_fb[con2fb_map[vc->vc_num]]; 1098 cap = info->flags; 1099 1100 if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET) 1101 logo_shown = FBCON_LOGO_DONTSHOW; 1102 1103 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1104 (info->fix.type == FB_TYPE_TEXT)) 1105 logo = 0; 1106 1107 if (var_to_display(p, &info->var, info)) 1108 return; 1109 1110 if (!info->fbcon_par) 1111 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1112 1113 /* If we are not the first console on this 1114 fb, copy the font from that console */ 1115 t = &fb_display[fg_console]; 1116 if (!p->fontdata) { 1117 if (t->fontdata) { 1118 struct vc_data *fvc = vc_cons[fg_console].d; 1119 1120 vc->vc_font.data = (void *)(p->fontdata = 1121 fvc->vc_font.data); 1122 vc->vc_font.width = fvc->vc_font.width; 1123 vc->vc_font.height = fvc->vc_font.height; 1124 p->userfont = t->userfont; 1125 1126 if (p->userfont) 1127 REFCOUNT(p->fontdata)++; 1128 } else { 1129 const struct font_desc *font = NULL; 1130 1131 if (!fontname[0] || !(font = find_font(fontname))) 1132 font = get_default_font(info->var.xres, 1133 info->var.yres, 1134 info->pixmap.blit_x, 1135 info->pixmap.blit_y); 1136 vc->vc_font.width = font->width; 1137 vc->vc_font.height = font->height; 1138 vc->vc_font.data = (void *)(p->fontdata = font->data); 1139 vc->vc_font.charcount = 256; /* FIXME Need to 1140 support more fonts */ 1141 } 1142 } 1143 1144 if (p->userfont) 1145 charcnt = FNTCHARCNT(p->fontdata); 1146 1147 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1148 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1149 if (charcnt == 256) { 1150 vc->vc_hi_font_mask = 0; 1151 } else { 1152 vc->vc_hi_font_mask = 0x100; 1153 if (vc->vc_can_do_color) 1154 vc->vc_complement_mask <<= 1; 1155 } 1156 1157 if (!*svc->vc_uni_pagedir_loc) 1158 con_set_default_unimap(svc); 1159 if (!*vc->vc_uni_pagedir_loc) 1160 con_copy_unimap(vc, svc); 1161 1162 ops = info->fbcon_par; 1163 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1164 1165 p->con_rotate = initial_rotation; 1166 if (p->con_rotate == -1) 1167 p->con_rotate = info->fbcon_rotate_hint; 1168 if (p->con_rotate == -1) 1169 p->con_rotate = FB_ROTATE_UR; 1170 1171 set_blitting_type(vc, info); 1172 1173 cols = vc->vc_cols; 1174 rows = vc->vc_rows; 1175 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1176 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1177 new_cols /= vc->vc_font.width; 1178 new_rows /= vc->vc_font.height; 1179 1180 /* 1181 * We must always set the mode. The mode of the previous console 1182 * driver could be in the same resolution but we are using different 1183 * hardware so we have to initialize the hardware. 1184 * 1185 * We need to do it in fbcon_init() to prevent screen corruption. 1186 */ 1187 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1188 if (info->fbops->fb_set_par && 1189 !(ops->flags & FBCON_FLAGS_INIT)) { 1190 ret = info->fbops->fb_set_par(info); 1191 1192 if (ret) 1193 printk(KERN_ERR "fbcon_init: detected " 1194 "unhandled fb_set_par error, " 1195 "error code %d\n", ret); 1196 } 1197 1198 ops->flags |= FBCON_FLAGS_INIT; 1199 } 1200 1201 ops->graphics = 0; 1202 1203 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1204 !(cap & FBINFO_HWACCEL_DISABLED)) 1205 p->scrollmode = SCROLL_MOVE; 1206 else /* default to something safe */ 1207 p->scrollmode = SCROLL_REDRAW; 1208 1209 /* 1210 * ++guenther: console.c:vc_allocate() relies on initializing 1211 * vc_{cols,rows}, but we must not set those if we are only 1212 * resizing the console. 1213 */ 1214 if (init) { 1215 vc->vc_cols = new_cols; 1216 vc->vc_rows = new_rows; 1217 } else 1218 vc_resize(vc, new_cols, new_rows); 1219 1220 if (logo) 1221 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1222 1223 if (vc == svc && softback_buf) 1224 fbcon_update_softback(vc); 1225 1226 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1227 ops->rotate = FB_ROTATE_UR; 1228 set_blitting_type(vc, info); 1229 } 1230 1231 ops->p = &fb_display[fg_console]; 1232 } 1233 1234 static void fbcon_free_font(struct fbcon_display *p, bool freefont) 1235 { 1236 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1237 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1238 p->fontdata = NULL; 1239 p->userfont = 0; 1240 } 1241 1242 static void set_vc_hi_font(struct vc_data *vc, bool set); 1243 1244 static void fbcon_deinit(struct vc_data *vc) 1245 { 1246 struct fbcon_display *p = &fb_display[vc->vc_num]; 1247 struct fb_info *info; 1248 struct fbcon_ops *ops; 1249 int idx; 1250 bool free_font = true; 1251 1252 idx = con2fb_map[vc->vc_num]; 1253 1254 if (idx == -1) 1255 goto finished; 1256 1257 info = registered_fb[idx]; 1258 1259 if (!info) 1260 goto finished; 1261 1262 if (info->flags & FBINFO_MISC_FIRMWARE) 1263 free_font = false; 1264 ops = info->fbcon_par; 1265 1266 if (!ops) 1267 goto finished; 1268 1269 if (con_is_visible(vc)) 1270 fbcon_del_cursor_timer(info); 1271 1272 ops->flags &= ~FBCON_FLAGS_INIT; 1273 finished: 1274 1275 fbcon_free_font(p, free_font); 1276 if (free_font) 1277 vc->vc_font.data = NULL; 1278 1279 if (vc->vc_hi_font_mask && vc->vc_screenbuf) 1280 set_vc_hi_font(vc, false); 1281 1282 if (!con_is_bound(&fb_con)) 1283 fbcon_exit(); 1284 1285 return; 1286 } 1287 1288 /* ====================================================================== */ 1289 1290 /* fbcon_XXX routines - interface used by the world 1291 * 1292 * This system is now divided into two levels because of complications 1293 * caused by hardware scrolling. Top level functions: 1294 * 1295 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1296 * 1297 * handles y values in range [0, scr_height-1] that correspond to real 1298 * screen positions. y_wrap shift means that first line of bitmap may be 1299 * anywhere on this display. These functions convert lineoffsets to 1300 * bitmap offsets and deal with the wrap-around case by splitting blits. 1301 * 1302 * fbcon_bmove_physical_8() -- These functions fast implementations 1303 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1304 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1305 * 1306 * WARNING: 1307 * 1308 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1309 * Implies should only really hardware scroll in rows. Only reason for 1310 * restriction is simplicity & efficiency at the moment. 1311 */ 1312 1313 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1314 int width) 1315 { 1316 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1317 struct fbcon_ops *ops = info->fbcon_par; 1318 1319 struct fbcon_display *p = &fb_display[vc->vc_num]; 1320 u_int y_break; 1321 1322 if (fbcon_is_inactive(vc, info)) 1323 return; 1324 1325 if (!height || !width) 1326 return; 1327 1328 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1329 vc->vc_top = 0; 1330 /* 1331 * If the font dimensions are not an integral of the display 1332 * dimensions then the ops->clear below won't end up clearing 1333 * the margins. Call clear_margins here in case the logo 1334 * bitmap stretched into the margin area. 1335 */ 1336 fbcon_clear_margins(vc, 0); 1337 } 1338 1339 /* Split blits that cross physical y_wrap boundary */ 1340 1341 y_break = p->vrows - p->yscroll; 1342 if (sy < y_break && sy + height - 1 >= y_break) { 1343 u_int b = y_break - sy; 1344 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1345 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1346 width); 1347 } else 1348 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1349 } 1350 1351 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1352 int count, int ypos, int xpos) 1353 { 1354 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1355 struct fbcon_display *p = &fb_display[vc->vc_num]; 1356 struct fbcon_ops *ops = info->fbcon_par; 1357 1358 if (!fbcon_is_inactive(vc, info)) 1359 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1360 get_color(vc, info, scr_readw(s), 1), 1361 get_color(vc, info, scr_readw(s), 0)); 1362 } 1363 1364 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1365 { 1366 unsigned short chr; 1367 1368 scr_writew(c, &chr); 1369 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1370 } 1371 1372 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1373 { 1374 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1375 struct fbcon_ops *ops = info->fbcon_par; 1376 1377 if (!fbcon_is_inactive(vc, info)) 1378 ops->clear_margins(vc, info, margin_color, bottom_only); 1379 } 1380 1381 static void fbcon_cursor(struct vc_data *vc, int mode) 1382 { 1383 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1384 struct fbcon_ops *ops = info->fbcon_par; 1385 int y; 1386 int c = scr_readw((u16 *) vc->vc_pos); 1387 1388 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1389 1390 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1391 return; 1392 1393 if (vc->vc_cursor_type & 0x10) 1394 fbcon_del_cursor_timer(info); 1395 else 1396 fbcon_add_cursor_timer(info); 1397 1398 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1399 if (mode & CM_SOFTBACK) { 1400 mode &= ~CM_SOFTBACK; 1401 y = softback_lines; 1402 } else { 1403 if (softback_lines) 1404 fbcon_set_origin(vc); 1405 y = 0; 1406 } 1407 1408 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), 1409 get_color(vc, info, c, 0)); 1410 } 1411 1412 static int scrollback_phys_max = 0; 1413 static int scrollback_max = 0; 1414 static int scrollback_current = 0; 1415 1416 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1417 int unit) 1418 { 1419 struct fbcon_display *p, *t; 1420 struct vc_data **default_mode, *vc; 1421 struct vc_data *svc; 1422 struct fbcon_ops *ops = info->fbcon_par; 1423 int rows, cols, charcnt = 256; 1424 1425 p = &fb_display[unit]; 1426 1427 if (var_to_display(p, var, info)) 1428 return; 1429 1430 vc = vc_cons[unit].d; 1431 1432 if (!vc) 1433 return; 1434 1435 default_mode = vc->vc_display_fg; 1436 svc = *default_mode; 1437 t = &fb_display[svc->vc_num]; 1438 1439 if (!vc->vc_font.data) { 1440 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1441 vc->vc_font.width = (*default_mode)->vc_font.width; 1442 vc->vc_font.height = (*default_mode)->vc_font.height; 1443 p->userfont = t->userfont; 1444 if (p->userfont) 1445 REFCOUNT(p->fontdata)++; 1446 } 1447 if (p->userfont) 1448 charcnt = FNTCHARCNT(p->fontdata); 1449 1450 var->activate = FB_ACTIVATE_NOW; 1451 info->var.activate = var->activate; 1452 var->yoffset = info->var.yoffset; 1453 var->xoffset = info->var.xoffset; 1454 fb_set_var(info, var); 1455 ops->var = info->var; 1456 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1457 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1458 if (charcnt == 256) { 1459 vc->vc_hi_font_mask = 0; 1460 } else { 1461 vc->vc_hi_font_mask = 0x100; 1462 if (vc->vc_can_do_color) 1463 vc->vc_complement_mask <<= 1; 1464 } 1465 1466 if (!*svc->vc_uni_pagedir_loc) 1467 con_set_default_unimap(svc); 1468 if (!*vc->vc_uni_pagedir_loc) 1469 con_copy_unimap(vc, svc); 1470 1471 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1472 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1473 cols /= vc->vc_font.width; 1474 rows /= vc->vc_font.height; 1475 vc_resize(vc, cols, rows); 1476 1477 if (con_is_visible(vc)) { 1478 update_screen(vc); 1479 if (softback_buf) 1480 fbcon_update_softback(vc); 1481 } 1482 } 1483 1484 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1485 { 1486 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1487 struct fbcon_ops *ops = info->fbcon_par; 1488 struct fbcon_display *p = &fb_display[vc->vc_num]; 1489 1490 p->yscroll += count; 1491 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1492 p->yscroll -= p->vrows; 1493 ops->var.xoffset = 0; 1494 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1495 ops->var.vmode |= FB_VMODE_YWRAP; 1496 ops->update_start(info); 1497 scrollback_max += count; 1498 if (scrollback_max > scrollback_phys_max) 1499 scrollback_max = scrollback_phys_max; 1500 scrollback_current = 0; 1501 } 1502 1503 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1504 { 1505 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1506 struct fbcon_ops *ops = info->fbcon_par; 1507 struct fbcon_display *p = &fb_display[vc->vc_num]; 1508 1509 p->yscroll -= count; 1510 if (p->yscroll < 0) /* Deal with wrap */ 1511 p->yscroll += p->vrows; 1512 ops->var.xoffset = 0; 1513 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1514 ops->var.vmode |= FB_VMODE_YWRAP; 1515 ops->update_start(info); 1516 scrollback_max -= count; 1517 if (scrollback_max < 0) 1518 scrollback_max = 0; 1519 scrollback_current = 0; 1520 } 1521 1522 static __inline__ void ypan_up(struct vc_data *vc, int count) 1523 { 1524 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1525 struct fbcon_display *p = &fb_display[vc->vc_num]; 1526 struct fbcon_ops *ops = info->fbcon_par; 1527 1528 p->yscroll += count; 1529 if (p->yscroll > p->vrows - vc->vc_rows) { 1530 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1531 0, 0, 0, vc->vc_rows, vc->vc_cols); 1532 p->yscroll -= p->vrows - vc->vc_rows; 1533 } 1534 1535 ops->var.xoffset = 0; 1536 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1537 ops->var.vmode &= ~FB_VMODE_YWRAP; 1538 ops->update_start(info); 1539 fbcon_clear_margins(vc, 1); 1540 scrollback_max += count; 1541 if (scrollback_max > scrollback_phys_max) 1542 scrollback_max = scrollback_phys_max; 1543 scrollback_current = 0; 1544 } 1545 1546 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1547 { 1548 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1549 struct fbcon_ops *ops = info->fbcon_par; 1550 struct fbcon_display *p = &fb_display[vc->vc_num]; 1551 1552 p->yscroll += count; 1553 1554 if (p->yscroll > p->vrows - vc->vc_rows) { 1555 p->yscroll -= p->vrows - vc->vc_rows; 1556 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1557 } 1558 1559 ops->var.xoffset = 0; 1560 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1561 ops->var.vmode &= ~FB_VMODE_YWRAP; 1562 ops->update_start(info); 1563 fbcon_clear_margins(vc, 1); 1564 scrollback_max += count; 1565 if (scrollback_max > scrollback_phys_max) 1566 scrollback_max = scrollback_phys_max; 1567 scrollback_current = 0; 1568 } 1569 1570 static __inline__ void ypan_down(struct vc_data *vc, int count) 1571 { 1572 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1573 struct fbcon_display *p = &fb_display[vc->vc_num]; 1574 struct fbcon_ops *ops = info->fbcon_par; 1575 1576 p->yscroll -= count; 1577 if (p->yscroll < 0) { 1578 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1579 0, vc->vc_rows, vc->vc_cols); 1580 p->yscroll += p->vrows - vc->vc_rows; 1581 } 1582 1583 ops->var.xoffset = 0; 1584 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1585 ops->var.vmode &= ~FB_VMODE_YWRAP; 1586 ops->update_start(info); 1587 fbcon_clear_margins(vc, 1); 1588 scrollback_max -= count; 1589 if (scrollback_max < 0) 1590 scrollback_max = 0; 1591 scrollback_current = 0; 1592 } 1593 1594 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1595 { 1596 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1597 struct fbcon_ops *ops = info->fbcon_par; 1598 struct fbcon_display *p = &fb_display[vc->vc_num]; 1599 1600 p->yscroll -= count; 1601 1602 if (p->yscroll < 0) { 1603 p->yscroll += p->vrows - vc->vc_rows; 1604 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1605 } 1606 1607 ops->var.xoffset = 0; 1608 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1609 ops->var.vmode &= ~FB_VMODE_YWRAP; 1610 ops->update_start(info); 1611 fbcon_clear_margins(vc, 1); 1612 scrollback_max -= count; 1613 if (scrollback_max < 0) 1614 scrollback_max = 0; 1615 scrollback_current = 0; 1616 } 1617 1618 static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p, 1619 long delta) 1620 { 1621 int count = vc->vc_rows; 1622 unsigned short *d, *s; 1623 unsigned long n; 1624 int line = 0; 1625 1626 d = (u16 *) softback_curr; 1627 if (d == (u16 *) softback_in) 1628 d = (u16 *) vc->vc_origin; 1629 n = softback_curr + delta * vc->vc_size_row; 1630 softback_lines -= delta; 1631 if (delta < 0) { 1632 if (softback_curr < softback_top && n < softback_buf) { 1633 n += softback_end - softback_buf; 1634 if (n < softback_top) { 1635 softback_lines -= 1636 (softback_top - n) / vc->vc_size_row; 1637 n = softback_top; 1638 } 1639 } else if (softback_curr >= softback_top 1640 && n < softback_top) { 1641 softback_lines -= 1642 (softback_top - n) / vc->vc_size_row; 1643 n = softback_top; 1644 } 1645 } else { 1646 if (softback_curr > softback_in && n >= softback_end) { 1647 n += softback_buf - softback_end; 1648 if (n > softback_in) { 1649 n = softback_in; 1650 softback_lines = 0; 1651 } 1652 } else if (softback_curr <= softback_in && n > softback_in) { 1653 n = softback_in; 1654 softback_lines = 0; 1655 } 1656 } 1657 if (n == softback_curr) 1658 return; 1659 softback_curr = n; 1660 s = (u16 *) softback_curr; 1661 if (s == (u16 *) softback_in) 1662 s = (u16 *) vc->vc_origin; 1663 while (count--) { 1664 unsigned short *start; 1665 unsigned short *le; 1666 unsigned short c; 1667 int x = 0; 1668 unsigned short attr = 1; 1669 1670 start = s; 1671 le = advance_row(s, 1); 1672 do { 1673 c = scr_readw(s); 1674 if (attr != (c & 0xff00)) { 1675 attr = c & 0xff00; 1676 if (s > start) { 1677 fbcon_putcs(vc, start, s - start, 1678 line, x); 1679 x += s - start; 1680 start = s; 1681 } 1682 } 1683 if (c == scr_readw(d)) { 1684 if (s > start) { 1685 fbcon_putcs(vc, start, s - start, 1686 line, x); 1687 x += s - start + 1; 1688 start = s + 1; 1689 } else { 1690 x++; 1691 start++; 1692 } 1693 } 1694 s++; 1695 d++; 1696 } while (s < le); 1697 if (s > start) 1698 fbcon_putcs(vc, start, s - start, line, x); 1699 line++; 1700 if (d == (u16 *) softback_end) 1701 d = (u16 *) softback_buf; 1702 if (d == (u16 *) softback_in) 1703 d = (u16 *) vc->vc_origin; 1704 if (s == (u16 *) softback_end) 1705 s = (u16 *) softback_buf; 1706 if (s == (u16 *) softback_in) 1707 s = (u16 *) vc->vc_origin; 1708 } 1709 } 1710 1711 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, 1712 int line, int count, int dy) 1713 { 1714 unsigned short *s = (unsigned short *) 1715 (vc->vc_origin + vc->vc_size_row * line); 1716 1717 while (count--) { 1718 unsigned short *start = s; 1719 unsigned short *le = advance_row(s, 1); 1720 unsigned short c; 1721 int x = 0; 1722 unsigned short attr = 1; 1723 1724 do { 1725 c = scr_readw(s); 1726 if (attr != (c & 0xff00)) { 1727 attr = c & 0xff00; 1728 if (s > start) { 1729 fbcon_putcs(vc, start, s - start, 1730 dy, x); 1731 x += s - start; 1732 start = s; 1733 } 1734 } 1735 console_conditional_schedule(); 1736 s++; 1737 } while (s < le); 1738 if (s > start) 1739 fbcon_putcs(vc, start, s - start, dy, x); 1740 console_conditional_schedule(); 1741 dy++; 1742 } 1743 } 1744 1745 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1746 struct fbcon_display *p, int line, int count, int ycount) 1747 { 1748 int offset = ycount * vc->vc_cols; 1749 unsigned short *d = (unsigned short *) 1750 (vc->vc_origin + vc->vc_size_row * line); 1751 unsigned short *s = d + offset; 1752 struct fbcon_ops *ops = info->fbcon_par; 1753 1754 while (count--) { 1755 unsigned short *start = s; 1756 unsigned short *le = advance_row(s, 1); 1757 unsigned short c; 1758 int x = 0; 1759 1760 do { 1761 c = scr_readw(s); 1762 1763 if (c == scr_readw(d)) { 1764 if (s > start) { 1765 ops->bmove(vc, info, line + ycount, x, 1766 line, x, 1, s-start); 1767 x += s - start + 1; 1768 start = s + 1; 1769 } else { 1770 x++; 1771 start++; 1772 } 1773 } 1774 1775 scr_writew(c, d); 1776 console_conditional_schedule(); 1777 s++; 1778 d++; 1779 } while (s < le); 1780 if (s > start) 1781 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1782 s-start); 1783 console_conditional_schedule(); 1784 if (ycount > 0) 1785 line++; 1786 else { 1787 line--; 1788 /* NOTE: We subtract two lines from these pointers */ 1789 s -= vc->vc_size_row; 1790 d -= vc->vc_size_row; 1791 } 1792 } 1793 } 1794 1795 static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p, 1796 int line, int count, int offset) 1797 { 1798 unsigned short *d = (unsigned short *) 1799 (vc->vc_origin + vc->vc_size_row * line); 1800 unsigned short *s = d + offset; 1801 1802 while (count--) { 1803 unsigned short *start = s; 1804 unsigned short *le = advance_row(s, 1); 1805 unsigned short c; 1806 int x = 0; 1807 unsigned short attr = 1; 1808 1809 do { 1810 c = scr_readw(s); 1811 if (attr != (c & 0xff00)) { 1812 attr = c & 0xff00; 1813 if (s > start) { 1814 fbcon_putcs(vc, start, s - start, 1815 line, x); 1816 x += s - start; 1817 start = s; 1818 } 1819 } 1820 if (c == scr_readw(d)) { 1821 if (s > start) { 1822 fbcon_putcs(vc, start, s - start, 1823 line, x); 1824 x += s - start + 1; 1825 start = s + 1; 1826 } else { 1827 x++; 1828 start++; 1829 } 1830 } 1831 scr_writew(c, d); 1832 console_conditional_schedule(); 1833 s++; 1834 d++; 1835 } while (s < le); 1836 if (s > start) 1837 fbcon_putcs(vc, start, s - start, line, x); 1838 console_conditional_schedule(); 1839 if (offset > 0) 1840 line++; 1841 else { 1842 line--; 1843 /* NOTE: We subtract two lines from these pointers */ 1844 s -= vc->vc_size_row; 1845 d -= vc->vc_size_row; 1846 } 1847 } 1848 } 1849 1850 static inline void fbcon_softback_note(struct vc_data *vc, int t, 1851 int count) 1852 { 1853 unsigned short *p; 1854 1855 if (vc->vc_num != fg_console) 1856 return; 1857 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); 1858 1859 while (count) { 1860 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); 1861 count--; 1862 p = advance_row(p, 1); 1863 softback_in += vc->vc_size_row; 1864 if (softback_in == softback_end) 1865 softback_in = softback_buf; 1866 if (softback_in == softback_top) { 1867 softback_top += vc->vc_size_row; 1868 if (softback_top == softback_end) 1869 softback_top = softback_buf; 1870 } 1871 } 1872 softback_curr = softback_in; 1873 } 1874 1875 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1876 enum con_scroll dir, unsigned int count) 1877 { 1878 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1879 struct fbcon_display *p = &fb_display[vc->vc_num]; 1880 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1881 1882 if (fbcon_is_inactive(vc, info)) 1883 return true; 1884 1885 fbcon_cursor(vc, CM_ERASE); 1886 1887 /* 1888 * ++Geert: Only use ywrap/ypan if the console is in text mode 1889 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1890 * whole screen (prevents flicker). 1891 */ 1892 1893 switch (dir) { 1894 case SM_UP: 1895 if (count > vc->vc_rows) /* Maximum realistic size */ 1896 count = vc->vc_rows; 1897 if (softback_top) 1898 fbcon_softback_note(vc, t, count); 1899 if (logo_shown >= 0) 1900 goto redraw_up; 1901 switch (p->scrollmode) { 1902 case SCROLL_MOVE: 1903 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1904 count); 1905 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1906 scr_memsetw((unsigned short *) (vc->vc_origin + 1907 vc->vc_size_row * 1908 (b - count)), 1909 vc->vc_video_erase_char, 1910 vc->vc_size_row * count); 1911 return true; 1912 break; 1913 1914 case SCROLL_WRAP_MOVE: 1915 if (b - t - count > 3 * vc->vc_rows >> 2) { 1916 if (t > 0) 1917 fbcon_bmove(vc, 0, 0, count, 0, t, 1918 vc->vc_cols); 1919 ywrap_up(vc, count); 1920 if (vc->vc_rows - b > 0) 1921 fbcon_bmove(vc, b - count, 0, b, 0, 1922 vc->vc_rows - b, 1923 vc->vc_cols); 1924 } else if (info->flags & FBINFO_READS_FAST) 1925 fbcon_bmove(vc, t + count, 0, t, 0, 1926 b - t - count, vc->vc_cols); 1927 else 1928 goto redraw_up; 1929 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1930 break; 1931 1932 case SCROLL_PAN_REDRAW: 1933 if ((p->yscroll + count <= 1934 2 * (p->vrows - vc->vc_rows)) 1935 && ((!scroll_partial && (b - t == vc->vc_rows)) 1936 || (scroll_partial 1937 && (b - t - count > 1938 3 * vc->vc_rows >> 2)))) { 1939 if (t > 0) 1940 fbcon_redraw_move(vc, p, 0, t, count); 1941 ypan_up_redraw(vc, t, count); 1942 if (vc->vc_rows - b > 0) 1943 fbcon_redraw_move(vc, p, b, 1944 vc->vc_rows - b, b); 1945 } else 1946 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1947 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1948 break; 1949 1950 case SCROLL_PAN_MOVE: 1951 if ((p->yscroll + count <= 1952 2 * (p->vrows - vc->vc_rows)) 1953 && ((!scroll_partial && (b - t == vc->vc_rows)) 1954 || (scroll_partial 1955 && (b - t - count > 1956 3 * vc->vc_rows >> 2)))) { 1957 if (t > 0) 1958 fbcon_bmove(vc, 0, 0, count, 0, t, 1959 vc->vc_cols); 1960 ypan_up(vc, count); 1961 if (vc->vc_rows - b > 0) 1962 fbcon_bmove(vc, b - count, 0, b, 0, 1963 vc->vc_rows - b, 1964 vc->vc_cols); 1965 } else if (info->flags & FBINFO_READS_FAST) 1966 fbcon_bmove(vc, t + count, 0, t, 0, 1967 b - t - count, vc->vc_cols); 1968 else 1969 goto redraw_up; 1970 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1971 break; 1972 1973 case SCROLL_REDRAW: 1974 redraw_up: 1975 fbcon_redraw(vc, p, t, b - t - count, 1976 count * vc->vc_cols); 1977 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1978 scr_memsetw((unsigned short *) (vc->vc_origin + 1979 vc->vc_size_row * 1980 (b - count)), 1981 vc->vc_video_erase_char, 1982 vc->vc_size_row * count); 1983 return true; 1984 } 1985 break; 1986 1987 case SM_DOWN: 1988 if (count > vc->vc_rows) /* Maximum realistic size */ 1989 count = vc->vc_rows; 1990 if (logo_shown >= 0) 1991 goto redraw_down; 1992 switch (p->scrollmode) { 1993 case SCROLL_MOVE: 1994 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1995 -count); 1996 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1997 scr_memsetw((unsigned short *) (vc->vc_origin + 1998 vc->vc_size_row * 1999 t), 2000 vc->vc_video_erase_char, 2001 vc->vc_size_row * count); 2002 return true; 2003 break; 2004 2005 case SCROLL_WRAP_MOVE: 2006 if (b - t - count > 3 * vc->vc_rows >> 2) { 2007 if (vc->vc_rows - b > 0) 2008 fbcon_bmove(vc, b, 0, b - count, 0, 2009 vc->vc_rows - b, 2010 vc->vc_cols); 2011 ywrap_down(vc, count); 2012 if (t > 0) 2013 fbcon_bmove(vc, count, 0, 0, 0, t, 2014 vc->vc_cols); 2015 } else if (info->flags & FBINFO_READS_FAST) 2016 fbcon_bmove(vc, t, 0, t + count, 0, 2017 b - t - count, vc->vc_cols); 2018 else 2019 goto redraw_down; 2020 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2021 break; 2022 2023 case SCROLL_PAN_MOVE: 2024 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 2025 && ((!scroll_partial && (b - t == vc->vc_rows)) 2026 || (scroll_partial 2027 && (b - t - count > 2028 3 * vc->vc_rows >> 2)))) { 2029 if (vc->vc_rows - b > 0) 2030 fbcon_bmove(vc, b, 0, b - count, 0, 2031 vc->vc_rows - b, 2032 vc->vc_cols); 2033 ypan_down(vc, count); 2034 if (t > 0) 2035 fbcon_bmove(vc, count, 0, 0, 0, t, 2036 vc->vc_cols); 2037 } else if (info->flags & FBINFO_READS_FAST) 2038 fbcon_bmove(vc, t, 0, t + count, 0, 2039 b - t - count, vc->vc_cols); 2040 else 2041 goto redraw_down; 2042 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2043 break; 2044 2045 case SCROLL_PAN_REDRAW: 2046 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 2047 && ((!scroll_partial && (b - t == vc->vc_rows)) 2048 || (scroll_partial 2049 && (b - t - count > 2050 3 * vc->vc_rows >> 2)))) { 2051 if (vc->vc_rows - b > 0) 2052 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 2053 b - count); 2054 ypan_down_redraw(vc, t, count); 2055 if (t > 0) 2056 fbcon_redraw_move(vc, p, count, t, 0); 2057 } else 2058 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 2059 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2060 break; 2061 2062 case SCROLL_REDRAW: 2063 redraw_down: 2064 fbcon_redraw(vc, p, b - 1, b - t - count, 2065 -count * vc->vc_cols); 2066 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2067 scr_memsetw((unsigned short *) (vc->vc_origin + 2068 vc->vc_size_row * 2069 t), 2070 vc->vc_video_erase_char, 2071 vc->vc_size_row * count); 2072 return true; 2073 } 2074 } 2075 return false; 2076 } 2077 2078 2079 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 2080 int height, int width) 2081 { 2082 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2083 struct fbcon_display *p = &fb_display[vc->vc_num]; 2084 2085 if (fbcon_is_inactive(vc, info)) 2086 return; 2087 2088 if (!width || !height) 2089 return; 2090 2091 /* Split blits that cross physical y_wrap case. 2092 * Pathological case involves 4 blits, better to use recursive 2093 * code rather than unrolled case 2094 * 2095 * Recursive invocations don't need to erase the cursor over and 2096 * over again, so we use fbcon_bmove_rec() 2097 */ 2098 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 2099 p->vrows - p->yscroll); 2100 } 2101 2102 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, 2103 int dy, int dx, int height, int width, u_int y_break) 2104 { 2105 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2106 struct fbcon_ops *ops = info->fbcon_par; 2107 u_int b; 2108 2109 if (sy < y_break && sy + height > y_break) { 2110 b = y_break - sy; 2111 if (dy < sy) { /* Avoid trashing self */ 2112 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2113 y_break); 2114 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2115 height - b, width, y_break); 2116 } else { 2117 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2118 height - b, width, y_break); 2119 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2120 y_break); 2121 } 2122 return; 2123 } 2124 2125 if (dy < y_break && dy + height > y_break) { 2126 b = y_break - dy; 2127 if (dy < sy) { /* Avoid trashing self */ 2128 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2129 y_break); 2130 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2131 height - b, width, y_break); 2132 } else { 2133 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2134 height - b, width, y_break); 2135 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2136 y_break); 2137 } 2138 return; 2139 } 2140 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 2141 height, width); 2142 } 2143 2144 static void updatescrollmode(struct fbcon_display *p, 2145 struct fb_info *info, 2146 struct vc_data *vc) 2147 { 2148 struct fbcon_ops *ops = info->fbcon_par; 2149 int fh = vc->vc_font.height; 2150 int cap = info->flags; 2151 u16 t = 0; 2152 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 2153 info->fix.xpanstep); 2154 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 2155 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2156 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 2157 info->var.xres_virtual); 2158 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 2159 divides(ypan, vc->vc_font.height) && vyres > yres; 2160 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 2161 divides(ywrap, vc->vc_font.height) && 2162 divides(vc->vc_font.height, vyres) && 2163 divides(vc->vc_font.height, yres); 2164 int reading_fast = cap & FBINFO_READS_FAST; 2165 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 2166 !(cap & FBINFO_HWACCEL_DISABLED); 2167 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 2168 !(cap & FBINFO_HWACCEL_DISABLED); 2169 2170 p->vrows = vyres/fh; 2171 if (yres > (fh * (vc->vc_rows + 1))) 2172 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 2173 if ((yres % fh) && (vyres % fh < yres % fh)) 2174 p->vrows--; 2175 2176 if (good_wrap || good_pan) { 2177 if (reading_fast || fast_copyarea) 2178 p->scrollmode = good_wrap ? 2179 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 2180 else 2181 p->scrollmode = good_wrap ? SCROLL_REDRAW : 2182 SCROLL_PAN_REDRAW; 2183 } else { 2184 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2185 p->scrollmode = SCROLL_MOVE; 2186 else 2187 p->scrollmode = SCROLL_REDRAW; 2188 } 2189 } 2190 2191 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2192 unsigned int height, unsigned int user) 2193 { 2194 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2195 struct fbcon_ops *ops = info->fbcon_par; 2196 struct fbcon_display *p = &fb_display[vc->vc_num]; 2197 struct fb_var_screeninfo var = info->var; 2198 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2199 2200 virt_w = FBCON_SWAP(ops->rotate, width, height); 2201 virt_h = FBCON_SWAP(ops->rotate, height, width); 2202 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2203 vc->vc_font.height); 2204 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2205 vc->vc_font.width); 2206 var.xres = virt_w * virt_fw; 2207 var.yres = virt_h * virt_fh; 2208 x_diff = info->var.xres - var.xres; 2209 y_diff = info->var.yres - var.yres; 2210 if (x_diff < 0 || x_diff > virt_fw || 2211 y_diff < 0 || y_diff > virt_fh) { 2212 const struct fb_videomode *mode; 2213 2214 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2215 mode = fb_find_best_mode(&var, &info->modelist); 2216 if (mode == NULL) 2217 return -EINVAL; 2218 display_to_var(&var, p); 2219 fb_videomode_to_var(&var, mode); 2220 2221 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2222 return -EINVAL; 2223 2224 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2225 if (con_is_visible(vc)) { 2226 var.activate = FB_ACTIVATE_NOW | 2227 FB_ACTIVATE_FORCE; 2228 fb_set_var(info, &var); 2229 } 2230 var_to_display(p, &info->var, info); 2231 ops->var = info->var; 2232 } 2233 updatescrollmode(p, info, vc); 2234 return 0; 2235 } 2236 2237 static int fbcon_switch(struct vc_data *vc) 2238 { 2239 struct fb_info *info, *old_info = NULL; 2240 struct fbcon_ops *ops; 2241 struct fbcon_display *p = &fb_display[vc->vc_num]; 2242 struct fb_var_screeninfo var; 2243 int i, ret, prev_console, charcnt = 256; 2244 2245 info = registered_fb[con2fb_map[vc->vc_num]]; 2246 ops = info->fbcon_par; 2247 2248 if (softback_top) { 2249 if (softback_lines) 2250 fbcon_set_origin(vc); 2251 softback_top = softback_curr = softback_in = softback_buf; 2252 softback_lines = 0; 2253 fbcon_update_softback(vc); 2254 } 2255 2256 if (logo_shown >= 0) { 2257 struct vc_data *conp2 = vc_cons[logo_shown].d; 2258 2259 if (conp2->vc_top == logo_lines 2260 && conp2->vc_bottom == conp2->vc_rows) 2261 conp2->vc_top = 0; 2262 logo_shown = FBCON_LOGO_CANSHOW; 2263 } 2264 2265 prev_console = ops->currcon; 2266 if (prev_console != -1) 2267 old_info = registered_fb[con2fb_map[prev_console]]; 2268 /* 2269 * FIXME: If we have multiple fbdev's loaded, we need to 2270 * update all info->currcon. Perhaps, we can place this 2271 * in a centralized structure, but this might break some 2272 * drivers. 2273 * 2274 * info->currcon = vc->vc_num; 2275 */ 2276 for_each_registered_fb(i) { 2277 if (registered_fb[i]->fbcon_par) { 2278 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2279 2280 o->currcon = vc->vc_num; 2281 } 2282 } 2283 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2284 display_to_var(&var, p); 2285 var.activate = FB_ACTIVATE_NOW; 2286 2287 /* 2288 * make sure we don't unnecessarily trip the memcmp() 2289 * in fb_set_var() 2290 */ 2291 info->var.activate = var.activate; 2292 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2293 fb_set_var(info, &var); 2294 ops->var = info->var; 2295 2296 if (old_info != NULL && (old_info != info || 2297 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2298 if (info->fbops->fb_set_par) { 2299 ret = info->fbops->fb_set_par(info); 2300 2301 if (ret) 2302 printk(KERN_ERR "fbcon_switch: detected " 2303 "unhandled fb_set_par error, " 2304 "error code %d\n", ret); 2305 } 2306 2307 if (old_info != info) 2308 fbcon_del_cursor_timer(old_info); 2309 } 2310 2311 if (fbcon_is_inactive(vc, info) || 2312 ops->blank_state != FB_BLANK_UNBLANK) 2313 fbcon_del_cursor_timer(info); 2314 else 2315 fbcon_add_cursor_timer(info); 2316 2317 set_blitting_type(vc, info); 2318 ops->cursor_reset = 1; 2319 2320 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2321 ops->rotate = FB_ROTATE_UR; 2322 set_blitting_type(vc, info); 2323 } 2324 2325 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2326 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2327 2328 if (p->userfont) 2329 charcnt = FNTCHARCNT(vc->vc_font.data); 2330 2331 if (charcnt > 256) 2332 vc->vc_complement_mask <<= 1; 2333 2334 updatescrollmode(p, info, vc); 2335 2336 switch (p->scrollmode) { 2337 case SCROLL_WRAP_MOVE: 2338 scrollback_phys_max = p->vrows - vc->vc_rows; 2339 break; 2340 case SCROLL_PAN_MOVE: 2341 case SCROLL_PAN_REDRAW: 2342 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2343 if (scrollback_phys_max < 0) 2344 scrollback_phys_max = 0; 2345 break; 2346 default: 2347 scrollback_phys_max = 0; 2348 break; 2349 } 2350 2351 scrollback_max = 0; 2352 scrollback_current = 0; 2353 2354 if (!fbcon_is_inactive(vc, info)) { 2355 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2356 ops->update_start(info); 2357 } 2358 2359 fbcon_set_palette(vc, color_table); 2360 fbcon_clear_margins(vc, 0); 2361 2362 if (logo_shown == FBCON_LOGO_DRAW) { 2363 2364 logo_shown = fg_console; 2365 /* This is protected above by initmem_freed */ 2366 fb_show_logo(info, ops->rotate); 2367 update_region(vc, 2368 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2369 vc->vc_size_row * (vc->vc_bottom - 2370 vc->vc_top) / 2); 2371 return 0; 2372 } 2373 return 1; 2374 } 2375 2376 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2377 int blank) 2378 { 2379 if (blank) { 2380 unsigned short charmask = vc->vc_hi_font_mask ? 2381 0x1ff : 0xff; 2382 unsigned short oldc; 2383 2384 oldc = vc->vc_video_erase_char; 2385 vc->vc_video_erase_char &= charmask; 2386 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2387 vc->vc_video_erase_char = oldc; 2388 } 2389 } 2390 2391 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2392 { 2393 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2394 struct fbcon_ops *ops = info->fbcon_par; 2395 2396 if (mode_switch) { 2397 struct fb_var_screeninfo var = info->var; 2398 2399 ops->graphics = 1; 2400 2401 if (!blank) { 2402 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; 2403 fb_set_var(info, &var); 2404 ops->graphics = 0; 2405 ops->var = info->var; 2406 } 2407 } 2408 2409 if (!fbcon_is_inactive(vc, info)) { 2410 if (ops->blank_state != blank) { 2411 ops->blank_state = blank; 2412 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2413 ops->cursor_flash = (!blank); 2414 2415 if (fb_blank(info, blank)) 2416 fbcon_generic_blank(vc, info, blank); 2417 } 2418 2419 if (!blank) 2420 update_screen(vc); 2421 } 2422 2423 if (mode_switch || fbcon_is_inactive(vc, info) || 2424 ops->blank_state != FB_BLANK_UNBLANK) 2425 fbcon_del_cursor_timer(info); 2426 else 2427 fbcon_add_cursor_timer(info); 2428 2429 return 0; 2430 } 2431 2432 static int fbcon_debug_enter(struct vc_data *vc) 2433 { 2434 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2435 struct fbcon_ops *ops = info->fbcon_par; 2436 2437 ops->save_graphics = ops->graphics; 2438 ops->graphics = 0; 2439 if (info->fbops->fb_debug_enter) 2440 info->fbops->fb_debug_enter(info); 2441 fbcon_set_palette(vc, color_table); 2442 return 0; 2443 } 2444 2445 static int fbcon_debug_leave(struct vc_data *vc) 2446 { 2447 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2448 struct fbcon_ops *ops = info->fbcon_par; 2449 2450 ops->graphics = ops->save_graphics; 2451 if (info->fbops->fb_debug_leave) 2452 info->fbops->fb_debug_leave(info); 2453 return 0; 2454 } 2455 2456 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2457 { 2458 u8 *fontdata = vc->vc_font.data; 2459 u8 *data = font->data; 2460 int i, j; 2461 2462 font->width = vc->vc_font.width; 2463 font->height = vc->vc_font.height; 2464 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2465 if (!font->data) 2466 return 0; 2467 2468 if (font->width <= 8) { 2469 j = vc->vc_font.height; 2470 for (i = 0; i < font->charcount; i++) { 2471 memcpy(data, fontdata, j); 2472 memset(data + j, 0, 32 - j); 2473 data += 32; 2474 fontdata += j; 2475 } 2476 } else if (font->width <= 16) { 2477 j = vc->vc_font.height * 2; 2478 for (i = 0; i < font->charcount; i++) { 2479 memcpy(data, fontdata, j); 2480 memset(data + j, 0, 64 - j); 2481 data += 64; 2482 fontdata += j; 2483 } 2484 } else if (font->width <= 24) { 2485 for (i = 0; i < font->charcount; i++) { 2486 for (j = 0; j < vc->vc_font.height; j++) { 2487 *data++ = fontdata[0]; 2488 *data++ = fontdata[1]; 2489 *data++ = fontdata[2]; 2490 fontdata += sizeof(u32); 2491 } 2492 memset(data, 0, 3 * (32 - j)); 2493 data += 3 * (32 - j); 2494 } 2495 } else { 2496 j = vc->vc_font.height * 4; 2497 for (i = 0; i < font->charcount; i++) { 2498 memcpy(data, fontdata, j); 2499 memset(data + j, 0, 128 - j); 2500 data += 128; 2501 fontdata += j; 2502 } 2503 } 2504 return 0; 2505 } 2506 2507 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2508 static void set_vc_hi_font(struct vc_data *vc, bool set) 2509 { 2510 if (!set) { 2511 vc->vc_hi_font_mask = 0; 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 if (vc->vc_can_do_color) { 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 c = scr_readw(cp); 2525 scr_writew(((c & 0xfe00) >> 1) | 2526 (c & 0xff), cp); 2527 } 2528 c = vc->vc_video_erase_char; 2529 vc->vc_video_erase_char = 2530 ((c & 0xfe00) >> 1) | (c & 0xff); 2531 vc->vc_attr >>= 1; 2532 } 2533 } else { 2534 vc->vc_hi_font_mask = 0x100; 2535 if (vc->vc_can_do_color) { 2536 vc->vc_complement_mask <<= 1; 2537 vc->vc_s_complement_mask <<= 1; 2538 } 2539 2540 /* ++Edmund: reorder the attribute bits */ 2541 { 2542 unsigned short *cp = 2543 (unsigned short *) vc->vc_origin; 2544 int count = vc->vc_screenbuf_size / 2; 2545 unsigned short c; 2546 for (; count > 0; count--, cp++) { 2547 unsigned short newc; 2548 c = scr_readw(cp); 2549 if (vc->vc_can_do_color) 2550 newc = 2551 ((c & 0xff00) << 1) | (c & 2552 0xff); 2553 else 2554 newc = c & ~0x100; 2555 scr_writew(newc, cp); 2556 } 2557 c = vc->vc_video_erase_char; 2558 if (vc->vc_can_do_color) { 2559 vc->vc_video_erase_char = 2560 ((c & 0xff00) << 1) | (c & 0xff); 2561 vc->vc_attr <<= 1; 2562 } else 2563 vc->vc_video_erase_char = c & ~0x100; 2564 } 2565 } 2566 } 2567 2568 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2569 const u8 * data, int userfont) 2570 { 2571 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2572 struct fbcon_ops *ops = info->fbcon_par; 2573 struct fbcon_display *p = &fb_display[vc->vc_num]; 2574 int resize; 2575 int cnt; 2576 char *old_data = NULL; 2577 2578 if (con_is_visible(vc) && softback_lines) 2579 fbcon_set_origin(vc); 2580 2581 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2582 if (p->userfont) 2583 old_data = vc->vc_font.data; 2584 if (userfont) 2585 cnt = FNTCHARCNT(data); 2586 else 2587 cnt = 256; 2588 vc->vc_font.data = (void *)(p->fontdata = data); 2589 if ((p->userfont = userfont)) 2590 REFCOUNT(data)++; 2591 vc->vc_font.width = w; 2592 vc->vc_font.height = h; 2593 if (vc->vc_hi_font_mask && cnt == 256) 2594 set_vc_hi_font(vc, false); 2595 else if (!vc->vc_hi_font_mask && cnt == 512) 2596 set_vc_hi_font(vc, true); 2597 2598 if (resize) { 2599 int cols, rows; 2600 2601 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2602 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2603 cols /= w; 2604 rows /= h; 2605 vc_resize(vc, cols, rows); 2606 if (con_is_visible(vc) && softback_buf) 2607 fbcon_update_softback(vc); 2608 } else if (con_is_visible(vc) 2609 && vc->vc_mode == KD_TEXT) { 2610 fbcon_clear_margins(vc, 0); 2611 update_screen(vc); 2612 } 2613 2614 if (old_data && (--REFCOUNT(old_data) == 0)) 2615 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2616 return 0; 2617 } 2618 2619 static int fbcon_copy_font(struct vc_data *vc, int con) 2620 { 2621 struct fbcon_display *od = &fb_display[con]; 2622 struct console_font *f = &vc->vc_font; 2623 2624 if (od->fontdata == f->data) 2625 return 0; /* already the same font... */ 2626 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2627 } 2628 2629 /* 2630 * User asked to set font; we are guaranteed that 2631 * a) width and height are in range 1..32 2632 * b) charcount does not exceed 512 2633 * but lets not assume that, since someone might someday want to use larger 2634 * fonts. And charcount of 512 is small for unicode support. 2635 * 2636 * However, user space gives the font in 32 rows , regardless of 2637 * actual font height. So a new API is needed if support for larger fonts 2638 * is ever implemented. 2639 */ 2640 2641 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, 2642 unsigned int flags) 2643 { 2644 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2645 unsigned charcount = font->charcount; 2646 int w = font->width; 2647 int h = font->height; 2648 int size; 2649 int i, csum; 2650 u8 *new_data, *data = font->data; 2651 int pitch = (font->width+7) >> 3; 2652 2653 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2654 * If not this check should be changed to charcount < 256 */ 2655 if (charcount != 256 && charcount != 512) 2656 return -EINVAL; 2657 2658 /* Make sure drawing engine can handle the font */ 2659 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2660 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2661 return -EINVAL; 2662 2663 /* Make sure driver can handle the font length */ 2664 if (fbcon_invalid_charcount(info, charcount)) 2665 return -EINVAL; 2666 2667 size = h * pitch * charcount; 2668 2669 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2670 2671 if (!new_data) 2672 return -ENOMEM; 2673 2674 new_data += FONT_EXTRA_WORDS * sizeof(int); 2675 FNTSIZE(new_data) = size; 2676 FNTCHARCNT(new_data) = charcount; 2677 REFCOUNT(new_data) = 0; /* usage counter */ 2678 for (i=0; i< charcount; i++) { 2679 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2680 } 2681 2682 /* Since linux has a nice crc32 function use it for counting font 2683 * checksums. */ 2684 csum = crc32(0, new_data, size); 2685 2686 FNTSUM(new_data) = csum; 2687 /* Check if the same font is on some other console already */ 2688 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2689 struct vc_data *tmp = vc_cons[i].d; 2690 2691 if (fb_display[i].userfont && 2692 fb_display[i].fontdata && 2693 FNTSUM(fb_display[i].fontdata) == csum && 2694 FNTSIZE(fb_display[i].fontdata) == size && 2695 tmp->vc_font.width == w && 2696 !memcmp(fb_display[i].fontdata, new_data, size)) { 2697 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2698 new_data = (u8 *)fb_display[i].fontdata; 2699 break; 2700 } 2701 } 2702 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2703 } 2704 2705 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2706 { 2707 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2708 const struct font_desc *f; 2709 2710 if (!name) 2711 f = get_default_font(info->var.xres, info->var.yres, 2712 info->pixmap.blit_x, info->pixmap.blit_y); 2713 else if (!(f = find_font(name))) 2714 return -ENOENT; 2715 2716 font->width = f->width; 2717 font->height = f->height; 2718 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2719 } 2720 2721 static u16 palette_red[16]; 2722 static u16 palette_green[16]; 2723 static u16 palette_blue[16]; 2724 2725 static struct fb_cmap palette_cmap = { 2726 0, 16, palette_red, palette_green, palette_blue, NULL 2727 }; 2728 2729 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2730 { 2731 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2732 int i, j, k, depth; 2733 u8 val; 2734 2735 if (fbcon_is_inactive(vc, info)) 2736 return; 2737 2738 if (!con_is_visible(vc)) 2739 return; 2740 2741 depth = fb_get_color_depth(&info->var, &info->fix); 2742 if (depth > 3) { 2743 for (i = j = 0; i < 16; i++) { 2744 k = table[i]; 2745 val = vc->vc_palette[j++]; 2746 palette_red[k] = (val << 8) | val; 2747 val = vc->vc_palette[j++]; 2748 palette_green[k] = (val << 8) | val; 2749 val = vc->vc_palette[j++]; 2750 palette_blue[k] = (val << 8) | val; 2751 } 2752 palette_cmap.len = 16; 2753 palette_cmap.start = 0; 2754 /* 2755 * If framebuffer is capable of less than 16 colors, 2756 * use default palette of fbcon. 2757 */ 2758 } else 2759 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2760 2761 fb_set_cmap(&palette_cmap, info); 2762 } 2763 2764 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) 2765 { 2766 unsigned long p; 2767 int line; 2768 2769 if (vc->vc_num != fg_console || !softback_lines) 2770 return (u16 *) (vc->vc_origin + offset); 2771 line = offset / vc->vc_size_row; 2772 if (line >= softback_lines) 2773 return (u16 *) (vc->vc_origin + offset - 2774 softback_lines * vc->vc_size_row); 2775 p = softback_curr + offset; 2776 if (p >= softback_end) 2777 p += softback_buf - softback_end; 2778 return (u16 *) p; 2779 } 2780 2781 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2782 int *px, int *py) 2783 { 2784 unsigned long ret; 2785 int x, y; 2786 2787 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2788 unsigned long offset = (pos - vc->vc_origin) / 2; 2789 2790 x = offset % vc->vc_cols; 2791 y = offset / vc->vc_cols; 2792 if (vc->vc_num == fg_console) 2793 y += softback_lines; 2794 ret = pos + (vc->vc_cols - x) * 2; 2795 } else if (vc->vc_num == fg_console && softback_lines) { 2796 unsigned long offset = pos - softback_curr; 2797 2798 if (pos < softback_curr) 2799 offset += softback_end - softback_buf; 2800 offset /= 2; 2801 x = offset % vc->vc_cols; 2802 y = offset / vc->vc_cols; 2803 ret = pos + (vc->vc_cols - x) * 2; 2804 if (ret == softback_end) 2805 ret = softback_buf; 2806 if (ret == softback_in) 2807 ret = vc->vc_origin; 2808 } else { 2809 /* Should not happen */ 2810 x = y = 0; 2811 ret = vc->vc_origin; 2812 } 2813 if (px) 2814 *px = x; 2815 if (py) 2816 *py = y; 2817 return ret; 2818 } 2819 2820 /* As we might be inside of softback, we may work with non-contiguous buffer, 2821 that's why we have to use a separate routine. */ 2822 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2823 { 2824 while (cnt--) { 2825 u16 a = scr_readw(p); 2826 if (!vc->vc_can_do_color) 2827 a ^= 0x0800; 2828 else if (vc->vc_hi_font_mask == 0x100) 2829 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2830 (((a) & 0x0e00) << 4); 2831 else 2832 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2833 (((a) & 0x0700) << 4); 2834 scr_writew(a, p++); 2835 if (p == (u16 *) softback_end) 2836 p = (u16 *) softback_buf; 2837 if (p == (u16 *) softback_in) 2838 p = (u16 *) vc->vc_origin; 2839 } 2840 } 2841 2842 static void fbcon_scrolldelta(struct vc_data *vc, int lines) 2843 { 2844 struct fb_info *info = registered_fb[con2fb_map[fg_console]]; 2845 struct fbcon_ops *ops = info->fbcon_par; 2846 struct fbcon_display *disp = &fb_display[fg_console]; 2847 int offset, limit, scrollback_old; 2848 2849 if (softback_top) { 2850 if (vc->vc_num != fg_console) 2851 return; 2852 if (vc->vc_mode != KD_TEXT || !lines) 2853 return; 2854 if (logo_shown >= 0) { 2855 struct vc_data *conp2 = vc_cons[logo_shown].d; 2856 2857 if (conp2->vc_top == logo_lines 2858 && conp2->vc_bottom == conp2->vc_rows) 2859 conp2->vc_top = 0; 2860 if (logo_shown == vc->vc_num) { 2861 unsigned long p, q; 2862 int i; 2863 2864 p = softback_in; 2865 q = vc->vc_origin + 2866 logo_lines * vc->vc_size_row; 2867 for (i = 0; i < logo_lines; i++) { 2868 if (p == softback_top) 2869 break; 2870 if (p == softback_buf) 2871 p = softback_end; 2872 p -= vc->vc_size_row; 2873 q -= vc->vc_size_row; 2874 scr_memcpyw((u16 *) q, (u16 *) p, 2875 vc->vc_size_row); 2876 } 2877 softback_in = softback_curr = p; 2878 update_region(vc, vc->vc_origin, 2879 logo_lines * vc->vc_cols); 2880 } 2881 logo_shown = FBCON_LOGO_CANSHOW; 2882 } 2883 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); 2884 fbcon_redraw_softback(vc, disp, lines); 2885 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); 2886 return; 2887 } 2888 2889 if (!scrollback_phys_max) 2890 return; 2891 2892 scrollback_old = scrollback_current; 2893 scrollback_current -= lines; 2894 if (scrollback_current < 0) 2895 scrollback_current = 0; 2896 else if (scrollback_current > scrollback_max) 2897 scrollback_current = scrollback_max; 2898 if (scrollback_current == scrollback_old) 2899 return; 2900 2901 if (fbcon_is_inactive(vc, info)) 2902 return; 2903 2904 fbcon_cursor(vc, CM_ERASE); 2905 2906 offset = disp->yscroll - scrollback_current; 2907 limit = disp->vrows; 2908 switch (disp->scrollmode) { 2909 case SCROLL_WRAP_MOVE: 2910 info->var.vmode |= FB_VMODE_YWRAP; 2911 break; 2912 case SCROLL_PAN_MOVE: 2913 case SCROLL_PAN_REDRAW: 2914 limit -= vc->vc_rows; 2915 info->var.vmode &= ~FB_VMODE_YWRAP; 2916 break; 2917 } 2918 if (offset < 0) 2919 offset += limit; 2920 else if (offset >= limit) 2921 offset -= limit; 2922 2923 ops->var.xoffset = 0; 2924 ops->var.yoffset = offset * vc->vc_font.height; 2925 ops->update_start(info); 2926 2927 if (!scrollback_current) 2928 fbcon_cursor(vc, CM_DRAW); 2929 } 2930 2931 static int fbcon_set_origin(struct vc_data *vc) 2932 { 2933 if (softback_lines) 2934 fbcon_scrolldelta(vc, softback_lines); 2935 return 0; 2936 } 2937 2938 void fbcon_suspended(struct fb_info *info) 2939 { 2940 struct vc_data *vc = NULL; 2941 struct fbcon_ops *ops = info->fbcon_par; 2942 2943 if (!ops || ops->currcon < 0) 2944 return; 2945 vc = vc_cons[ops->currcon].d; 2946 2947 /* Clear cursor, restore saved data */ 2948 fbcon_cursor(vc, CM_ERASE); 2949 } 2950 2951 void fbcon_resumed(struct fb_info *info) 2952 { 2953 struct vc_data *vc; 2954 struct fbcon_ops *ops = info->fbcon_par; 2955 2956 if (!ops || ops->currcon < 0) 2957 return; 2958 vc = vc_cons[ops->currcon].d; 2959 2960 update_screen(vc); 2961 } 2962 2963 static void fbcon_modechanged(struct fb_info *info) 2964 { 2965 struct fbcon_ops *ops = info->fbcon_par; 2966 struct vc_data *vc; 2967 struct fbcon_display *p; 2968 int rows, cols; 2969 2970 if (!ops || ops->currcon < 0) 2971 return; 2972 vc = vc_cons[ops->currcon].d; 2973 if (vc->vc_mode != KD_TEXT || 2974 registered_fb[con2fb_map[ops->currcon]] != info) 2975 return; 2976 2977 p = &fb_display[vc->vc_num]; 2978 set_blitting_type(vc, info); 2979 2980 if (con_is_visible(vc)) { 2981 var_to_display(p, &info->var, info); 2982 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2983 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2984 cols /= vc->vc_font.width; 2985 rows /= vc->vc_font.height; 2986 vc_resize(vc, cols, rows); 2987 updatescrollmode(p, info, vc); 2988 scrollback_max = 0; 2989 scrollback_current = 0; 2990 2991 if (!fbcon_is_inactive(vc, info)) { 2992 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2993 ops->update_start(info); 2994 } 2995 2996 fbcon_set_palette(vc, color_table); 2997 update_screen(vc); 2998 if (softback_buf) 2999 fbcon_update_softback(vc); 3000 } 3001 } 3002 3003 static void fbcon_set_all_vcs(struct fb_info *info) 3004 { 3005 struct fbcon_ops *ops = info->fbcon_par; 3006 struct vc_data *vc; 3007 struct fbcon_display *p; 3008 int i, rows, cols, fg = -1; 3009 3010 if (!ops || ops->currcon < 0) 3011 return; 3012 3013 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3014 vc = vc_cons[i].d; 3015 if (!vc || vc->vc_mode != KD_TEXT || 3016 registered_fb[con2fb_map[i]] != info) 3017 continue; 3018 3019 if (con_is_visible(vc)) { 3020 fg = i; 3021 continue; 3022 } 3023 3024 p = &fb_display[vc->vc_num]; 3025 set_blitting_type(vc, info); 3026 var_to_display(p, &info->var, info); 3027 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 3028 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 3029 cols /= vc->vc_font.width; 3030 rows /= vc->vc_font.height; 3031 vc_resize(vc, cols, rows); 3032 } 3033 3034 if (fg != -1) 3035 fbcon_modechanged(info); 3036 } 3037 3038 3039 void fbcon_update_vcs(struct fb_info *info, bool all) 3040 { 3041 if (all) 3042 fbcon_set_all_vcs(info); 3043 else 3044 fbcon_modechanged(info); 3045 } 3046 EXPORT_SYMBOL(fbcon_update_vcs); 3047 3048 int fbcon_mode_deleted(struct fb_info *info, 3049 struct fb_videomode *mode) 3050 { 3051 struct fb_info *fb_info; 3052 struct fbcon_display *p; 3053 int i, j, found = 0; 3054 3055 /* before deletion, ensure that mode is not in use */ 3056 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3057 j = con2fb_map[i]; 3058 if (j == -1) 3059 continue; 3060 fb_info = registered_fb[j]; 3061 if (fb_info != info) 3062 continue; 3063 p = &fb_display[i]; 3064 if (!p || !p->mode) 3065 continue; 3066 if (fb_mode_is_equal(p->mode, mode)) { 3067 found = 1; 3068 break; 3069 } 3070 } 3071 return found; 3072 } 3073 3074 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 3075 static void fbcon_unbind(void) 3076 { 3077 int ret; 3078 3079 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 3080 fbcon_is_default); 3081 3082 if (!ret) 3083 fbcon_has_console_bind = 0; 3084 } 3085 #else 3086 static inline void fbcon_unbind(void) {} 3087 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 3088 3089 /* called with console_lock held */ 3090 void fbcon_fb_unbind(struct fb_info *info) 3091 { 3092 int i, new_idx = -1, ret = 0; 3093 int idx = info->node; 3094 3095 WARN_CONSOLE_UNLOCKED(); 3096 3097 if (!fbcon_has_console_bind) 3098 return; 3099 3100 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3101 if (con2fb_map[i] != idx && 3102 con2fb_map[i] != -1) { 3103 new_idx = con2fb_map[i]; 3104 break; 3105 } 3106 } 3107 3108 if (new_idx != -1) { 3109 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3110 if (con2fb_map[i] == idx) 3111 set_con2fb_map(i, new_idx, 0); 3112 } 3113 } else { 3114 struct fb_info *info = registered_fb[idx]; 3115 3116 /* This is sort of like set_con2fb_map, except it maps 3117 * the consoles to no device and then releases the 3118 * oldinfo to free memory and cancel the cursor blink 3119 * timer. I can imagine this just becoming part of 3120 * set_con2fb_map where new_idx is -1 3121 */ 3122 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3123 if (con2fb_map[i] == idx) { 3124 con2fb_map[i] = -1; 3125 if (!search_fb_in_map(idx)) { 3126 ret = con2fb_release_oldinfo(vc_cons[i].d, 3127 info, NULL, i, 3128 idx, 0); 3129 if (ret) { 3130 con2fb_map[i] = idx; 3131 return; 3132 } 3133 } 3134 } 3135 } 3136 fbcon_unbind(); 3137 } 3138 } 3139 3140 /* called with console_lock held */ 3141 void fbcon_fb_unregistered(struct fb_info *info) 3142 { 3143 int i, idx; 3144 3145 WARN_CONSOLE_UNLOCKED(); 3146 3147 if (deferred_takeover) 3148 return; 3149 3150 idx = info->node; 3151 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3152 if (con2fb_map[i] == idx) 3153 con2fb_map[i] = -1; 3154 } 3155 3156 if (idx == info_idx) { 3157 info_idx = -1; 3158 3159 for_each_registered_fb(i) { 3160 info_idx = i; 3161 break; 3162 } 3163 } 3164 3165 if (info_idx != -1) { 3166 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3167 if (con2fb_map[i] == -1) 3168 con2fb_map[i] = info_idx; 3169 } 3170 } 3171 3172 if (primary_device == idx) 3173 primary_device = -1; 3174 3175 if (!num_registered_fb) 3176 do_unregister_con_driver(&fb_con); 3177 } 3178 3179 void fbcon_remap_all(struct fb_info *info) 3180 { 3181 int i, idx = info->node; 3182 3183 console_lock(); 3184 if (deferred_takeover) { 3185 for (i = first_fb_vc; i <= last_fb_vc; i++) 3186 con2fb_map_boot[i] = idx; 3187 fbcon_map_override(); 3188 console_unlock(); 3189 return; 3190 } 3191 3192 for (i = first_fb_vc; i <= last_fb_vc; i++) 3193 set_con2fb_map(i, idx, 0); 3194 3195 if (con_is_bound(&fb_con)) { 3196 printk(KERN_INFO "fbcon: Remapping primary device, " 3197 "fb%i, to tty %i-%i\n", idx, 3198 first_fb_vc + 1, last_fb_vc + 1); 3199 info_idx = idx; 3200 } 3201 console_unlock(); 3202 } 3203 3204 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 3205 static void fbcon_select_primary(struct fb_info *info) 3206 { 3207 if (!map_override && primary_device == -1 && 3208 fb_is_primary_device(info)) { 3209 int i; 3210 3211 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 3212 info->fix.id, info->node); 3213 primary_device = info->node; 3214 3215 for (i = first_fb_vc; i <= last_fb_vc; i++) 3216 con2fb_map_boot[i] = primary_device; 3217 3218 if (con_is_bound(&fb_con)) { 3219 printk(KERN_INFO "fbcon: Remapping primary device, " 3220 "fb%i, to tty %i-%i\n", info->node, 3221 first_fb_vc + 1, last_fb_vc + 1); 3222 info_idx = primary_device; 3223 } 3224 } 3225 3226 } 3227 #else 3228 static inline void fbcon_select_primary(struct fb_info *info) 3229 { 3230 return; 3231 } 3232 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 3233 3234 /* called with console_lock held */ 3235 int fbcon_fb_registered(struct fb_info *info) 3236 { 3237 int ret = 0, i, idx; 3238 3239 WARN_CONSOLE_UNLOCKED(); 3240 3241 idx = info->node; 3242 fbcon_select_primary(info); 3243 3244 if (deferred_takeover) { 3245 pr_info("fbcon: Deferring console take-over\n"); 3246 return 0; 3247 } 3248 3249 if (info_idx == -1) { 3250 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3251 if (con2fb_map_boot[i] == idx) { 3252 info_idx = idx; 3253 break; 3254 } 3255 } 3256 3257 if (info_idx != -1) 3258 ret = do_fbcon_takeover(1); 3259 } else { 3260 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3261 if (con2fb_map_boot[i] == idx) 3262 set_con2fb_map(i, idx, 0); 3263 } 3264 } 3265 3266 return ret; 3267 } 3268 3269 void fbcon_fb_blanked(struct fb_info *info, int blank) 3270 { 3271 struct fbcon_ops *ops = info->fbcon_par; 3272 struct vc_data *vc; 3273 3274 if (!ops || ops->currcon < 0) 3275 return; 3276 3277 vc = vc_cons[ops->currcon].d; 3278 if (vc->vc_mode != KD_TEXT || 3279 registered_fb[con2fb_map[ops->currcon]] != info) 3280 return; 3281 3282 if (con_is_visible(vc)) { 3283 if (blank) 3284 do_blank_screen(0); 3285 else 3286 do_unblank_screen(0); 3287 } 3288 ops->blank_state = blank; 3289 } 3290 3291 void fbcon_new_modelist(struct fb_info *info) 3292 { 3293 int i; 3294 struct vc_data *vc; 3295 struct fb_var_screeninfo var; 3296 const struct fb_videomode *mode; 3297 3298 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3299 if (registered_fb[con2fb_map[i]] != info) 3300 continue; 3301 if (!fb_display[i].mode) 3302 continue; 3303 vc = vc_cons[i].d; 3304 display_to_var(&var, &fb_display[i]); 3305 mode = fb_find_nearest_mode(fb_display[i].mode, 3306 &info->modelist); 3307 fb_videomode_to_var(&var, mode); 3308 fbcon_set_disp(info, &var, vc->vc_num); 3309 } 3310 } 3311 3312 void fbcon_get_requirement(struct fb_info *info, 3313 struct fb_blit_caps *caps) 3314 { 3315 struct vc_data *vc; 3316 struct fbcon_display *p; 3317 3318 if (caps->flags) { 3319 int i, charcnt; 3320 3321 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3322 vc = vc_cons[i].d; 3323 if (vc && vc->vc_mode == KD_TEXT && 3324 info->node == con2fb_map[i]) { 3325 p = &fb_display[i]; 3326 caps->x |= 1 << (vc->vc_font.width - 1); 3327 caps->y |= 1 << (vc->vc_font.height - 1); 3328 charcnt = (p->userfont) ? 3329 FNTCHARCNT(p->fontdata) : 256; 3330 if (caps->len < charcnt) 3331 caps->len = charcnt; 3332 } 3333 } 3334 } else { 3335 vc = vc_cons[fg_console].d; 3336 3337 if (vc && vc->vc_mode == KD_TEXT && 3338 info->node == con2fb_map[fg_console]) { 3339 p = &fb_display[fg_console]; 3340 caps->x = 1 << (vc->vc_font.width - 1); 3341 caps->y = 1 << (vc->vc_font.height - 1); 3342 caps->len = (p->userfont) ? 3343 FNTCHARCNT(p->fontdata) : 256; 3344 } 3345 } 3346 } 3347 3348 int fbcon_set_con2fb_map_ioctl(void __user *argp) 3349 { 3350 struct fb_con2fbmap con2fb; 3351 int ret; 3352 3353 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3354 return -EFAULT; 3355 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3356 return -EINVAL; 3357 if (con2fb.framebuffer >= FB_MAX) 3358 return -EINVAL; 3359 if (!registered_fb[con2fb.framebuffer]) 3360 request_module("fb%d", con2fb.framebuffer); 3361 if (!registered_fb[con2fb.framebuffer]) { 3362 return -EINVAL; 3363 } 3364 3365 console_lock(); 3366 ret = set_con2fb_map(con2fb.console - 1, 3367 con2fb.framebuffer, 1); 3368 console_unlock(); 3369 3370 return ret; 3371 } 3372 3373 int fbcon_get_con2fb_map_ioctl(void __user *argp) 3374 { 3375 struct fb_con2fbmap con2fb; 3376 3377 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3378 return -EFAULT; 3379 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3380 return -EINVAL; 3381 3382 console_lock(); 3383 con2fb.framebuffer = con2fb_map[con2fb.console - 1]; 3384 console_unlock(); 3385 3386 return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; 3387 } 3388 3389 /* 3390 * The console `switch' structure for the frame buffer based console 3391 */ 3392 3393 static const struct consw fb_con = { 3394 .owner = THIS_MODULE, 3395 .con_startup = fbcon_startup, 3396 .con_init = fbcon_init, 3397 .con_deinit = fbcon_deinit, 3398 .con_clear = fbcon_clear, 3399 .con_putc = fbcon_putc, 3400 .con_putcs = fbcon_putcs, 3401 .con_cursor = fbcon_cursor, 3402 .con_scroll = fbcon_scroll, 3403 .con_switch = fbcon_switch, 3404 .con_blank = fbcon_blank, 3405 .con_font_set = fbcon_set_font, 3406 .con_font_get = fbcon_get_font, 3407 .con_font_default = fbcon_set_def_font, 3408 .con_font_copy = fbcon_copy_font, 3409 .con_set_palette = fbcon_set_palette, 3410 .con_scrolldelta = fbcon_scrolldelta, 3411 .con_set_origin = fbcon_set_origin, 3412 .con_invert_region = fbcon_invert_region, 3413 .con_screen_pos = fbcon_screen_pos, 3414 .con_getxy = fbcon_getxy, 3415 .con_resize = fbcon_resize, 3416 .con_debug_enter = fbcon_debug_enter, 3417 .con_debug_leave = fbcon_debug_leave, 3418 }; 3419 3420 static ssize_t store_rotate(struct device *device, 3421 struct device_attribute *attr, const char *buf, 3422 size_t count) 3423 { 3424 struct fb_info *info; 3425 int rotate, idx; 3426 char **last = NULL; 3427 3428 console_lock(); 3429 idx = con2fb_map[fg_console]; 3430 3431 if (idx == -1 || registered_fb[idx] == NULL) 3432 goto err; 3433 3434 info = registered_fb[idx]; 3435 rotate = simple_strtoul(buf, last, 0); 3436 fbcon_rotate(info, rotate); 3437 err: 3438 console_unlock(); 3439 return count; 3440 } 3441 3442 static ssize_t store_rotate_all(struct device *device, 3443 struct device_attribute *attr,const char *buf, 3444 size_t count) 3445 { 3446 struct fb_info *info; 3447 int rotate, idx; 3448 char **last = NULL; 3449 3450 console_lock(); 3451 idx = con2fb_map[fg_console]; 3452 3453 if (idx == -1 || registered_fb[idx] == NULL) 3454 goto err; 3455 3456 info = registered_fb[idx]; 3457 rotate = simple_strtoul(buf, last, 0); 3458 fbcon_rotate_all(info, rotate); 3459 err: 3460 console_unlock(); 3461 return count; 3462 } 3463 3464 static ssize_t show_rotate(struct device *device, 3465 struct device_attribute *attr,char *buf) 3466 { 3467 struct fb_info *info; 3468 int rotate = 0, idx; 3469 3470 console_lock(); 3471 idx = con2fb_map[fg_console]; 3472 3473 if (idx == -1 || registered_fb[idx] == NULL) 3474 goto err; 3475 3476 info = registered_fb[idx]; 3477 rotate = fbcon_get_rotate(info); 3478 err: 3479 console_unlock(); 3480 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3481 } 3482 3483 static ssize_t show_cursor_blink(struct device *device, 3484 struct device_attribute *attr, char *buf) 3485 { 3486 struct fb_info *info; 3487 struct fbcon_ops *ops; 3488 int idx, blink = -1; 3489 3490 console_lock(); 3491 idx = con2fb_map[fg_console]; 3492 3493 if (idx == -1 || registered_fb[idx] == NULL) 3494 goto err; 3495 3496 info = registered_fb[idx]; 3497 ops = info->fbcon_par; 3498 3499 if (!ops) 3500 goto err; 3501 3502 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3503 err: 3504 console_unlock(); 3505 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3506 } 3507 3508 static ssize_t store_cursor_blink(struct device *device, 3509 struct device_attribute *attr, 3510 const char *buf, size_t count) 3511 { 3512 struct fb_info *info; 3513 int blink, idx; 3514 char **last = NULL; 3515 3516 console_lock(); 3517 idx = con2fb_map[fg_console]; 3518 3519 if (idx == -1 || registered_fb[idx] == NULL) 3520 goto err; 3521 3522 info = registered_fb[idx]; 3523 3524 if (!info->fbcon_par) 3525 goto err; 3526 3527 blink = simple_strtoul(buf, last, 0); 3528 3529 if (blink) { 3530 fbcon_cursor_noblink = 0; 3531 fbcon_add_cursor_timer(info); 3532 } else { 3533 fbcon_cursor_noblink = 1; 3534 fbcon_del_cursor_timer(info); 3535 } 3536 3537 err: 3538 console_unlock(); 3539 return count; 3540 } 3541 3542 static struct device_attribute device_attrs[] = { 3543 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3544 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3545 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3546 store_cursor_blink), 3547 }; 3548 3549 static int fbcon_init_device(void) 3550 { 3551 int i, error = 0; 3552 3553 fbcon_has_sysfs = 1; 3554 3555 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3556 error = device_create_file(fbcon_device, &device_attrs[i]); 3557 3558 if (error) 3559 break; 3560 } 3561 3562 if (error) { 3563 while (--i >= 0) 3564 device_remove_file(fbcon_device, &device_attrs[i]); 3565 3566 fbcon_has_sysfs = 0; 3567 } 3568 3569 return 0; 3570 } 3571 3572 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3573 static void fbcon_register_existing_fbs(struct work_struct *work) 3574 { 3575 int i; 3576 3577 console_lock(); 3578 3579 for_each_registered_fb(i) 3580 fbcon_fb_registered(registered_fb[i]); 3581 3582 console_unlock(); 3583 } 3584 3585 static struct notifier_block fbcon_output_nb; 3586 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); 3587 3588 static int fbcon_output_notifier(struct notifier_block *nb, 3589 unsigned long action, void *data) 3590 { 3591 WARN_CONSOLE_UNLOCKED(); 3592 3593 pr_info("fbcon: Taking over console\n"); 3594 3595 dummycon_unregister_output_notifier(&fbcon_output_nb); 3596 deferred_takeover = false; 3597 logo_shown = FBCON_LOGO_DONTSHOW; 3598 3599 /* We may get called in atomic context */ 3600 schedule_work(&fbcon_deferred_takeover_work); 3601 3602 return NOTIFY_OK; 3603 } 3604 #endif 3605 3606 static void fbcon_start(void) 3607 { 3608 WARN_CONSOLE_UNLOCKED(); 3609 3610 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3611 if (conswitchp != &dummy_con) 3612 deferred_takeover = false; 3613 3614 if (deferred_takeover) { 3615 fbcon_output_nb.notifier_call = fbcon_output_notifier; 3616 dummycon_register_output_notifier(&fbcon_output_nb); 3617 return; 3618 } 3619 #endif 3620 3621 if (num_registered_fb) { 3622 int i; 3623 3624 for_each_registered_fb(i) { 3625 info_idx = i; 3626 break; 3627 } 3628 3629 do_fbcon_takeover(0); 3630 } 3631 } 3632 3633 static void fbcon_exit(void) 3634 { 3635 struct fb_info *info; 3636 int i, j, mapped; 3637 3638 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3639 if (deferred_takeover) { 3640 dummycon_unregister_output_notifier(&fbcon_output_nb); 3641 deferred_takeover = false; 3642 } 3643 #endif 3644 3645 kvfree((void *)softback_buf); 3646 softback_buf = 0UL; 3647 3648 for_each_registered_fb(i) { 3649 int pending = 0; 3650 3651 mapped = 0; 3652 info = registered_fb[i]; 3653 3654 if (info->queue.func) 3655 pending = cancel_work_sync(&info->queue); 3656 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3657 "no")); 3658 3659 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3660 if (con2fb_map[j] == i) { 3661 mapped = 1; 3662 con2fb_map[j] = -1; 3663 } 3664 } 3665 3666 if (mapped) { 3667 if (info->fbops->fb_release) 3668 info->fbops->fb_release(info, 0); 3669 module_put(info->fbops->owner); 3670 3671 if (info->fbcon_par) { 3672 struct fbcon_ops *ops = info->fbcon_par; 3673 3674 fbcon_del_cursor_timer(info); 3675 kfree(ops->cursor_src); 3676 kfree(ops->cursor_state.mask); 3677 kfree(info->fbcon_par); 3678 info->fbcon_par = NULL; 3679 } 3680 3681 if (info->queue.func == fb_flashcursor) 3682 info->queue.func = NULL; 3683 } 3684 } 3685 } 3686 3687 void __init fb_console_init(void) 3688 { 3689 int i; 3690 3691 console_lock(); 3692 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3693 "fbcon"); 3694 3695 if (IS_ERR(fbcon_device)) { 3696 printk(KERN_WARNING "Unable to create device " 3697 "for fbcon; errno = %ld\n", 3698 PTR_ERR(fbcon_device)); 3699 fbcon_device = NULL; 3700 } else 3701 fbcon_init_device(); 3702 3703 for (i = 0; i < MAX_NR_CONSOLES; i++) 3704 con2fb_map[i] = -1; 3705 3706 fbcon_start(); 3707 console_unlock(); 3708 } 3709 3710 #ifdef MODULE 3711 3712 static void __exit fbcon_deinit_device(void) 3713 { 3714 int i; 3715 3716 if (fbcon_has_sysfs) { 3717 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3718 device_remove_file(fbcon_device, &device_attrs[i]); 3719 3720 fbcon_has_sysfs = 0; 3721 } 3722 } 3723 3724 void __exit fb_console_exit(void) 3725 { 3726 console_lock(); 3727 fbcon_deinit_device(); 3728 device_destroy(fb_class, MKDEV(0, 0)); 3729 fbcon_exit(); 3730 do_unregister_con_driver(&fb_con); 3731 console_unlock(); 3732 } 3733 #endif 3734