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, array3_size(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->state.y + logo_lines >= rows) 659 lines = rows - vc->state.y - 1; 660 else 661 lines = logo_lines; 662 vc->state.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, array3_size(logo_lines, new_cols, 2)); 680 vc->state.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 if (vc->vc_num == logo_shown) 1286 logo_shown = FBCON_LOGO_CANSHOW; 1287 1288 return; 1289 } 1290 1291 /* ====================================================================== */ 1292 1293 /* fbcon_XXX routines - interface used by the world 1294 * 1295 * This system is now divided into two levels because of complications 1296 * caused by hardware scrolling. Top level functions: 1297 * 1298 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1299 * 1300 * handles y values in range [0, scr_height-1] that correspond to real 1301 * screen positions. y_wrap shift means that first line of bitmap may be 1302 * anywhere on this display. These functions convert lineoffsets to 1303 * bitmap offsets and deal with the wrap-around case by splitting blits. 1304 * 1305 * fbcon_bmove_physical_8() -- These functions fast implementations 1306 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1307 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1308 * 1309 * WARNING: 1310 * 1311 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1312 * Implies should only really hardware scroll in rows. Only reason for 1313 * restriction is simplicity & efficiency at the moment. 1314 */ 1315 1316 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1317 int width) 1318 { 1319 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1320 struct fbcon_ops *ops = info->fbcon_par; 1321 1322 struct fbcon_display *p = &fb_display[vc->vc_num]; 1323 u_int y_break; 1324 1325 if (fbcon_is_inactive(vc, info)) 1326 return; 1327 1328 if (!height || !width) 1329 return; 1330 1331 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1332 vc->vc_top = 0; 1333 /* 1334 * If the font dimensions are not an integral of the display 1335 * dimensions then the ops->clear below won't end up clearing 1336 * the margins. Call clear_margins here in case the logo 1337 * bitmap stretched into the margin area. 1338 */ 1339 fbcon_clear_margins(vc, 0); 1340 } 1341 1342 /* Split blits that cross physical y_wrap boundary */ 1343 1344 y_break = p->vrows - p->yscroll; 1345 if (sy < y_break && sy + height - 1 >= y_break) { 1346 u_int b = y_break - sy; 1347 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1348 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1349 width); 1350 } else 1351 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1352 } 1353 1354 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1355 int count, int ypos, int xpos) 1356 { 1357 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1358 struct fbcon_display *p = &fb_display[vc->vc_num]; 1359 struct fbcon_ops *ops = info->fbcon_par; 1360 1361 if (!fbcon_is_inactive(vc, info)) 1362 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1363 get_color(vc, info, scr_readw(s), 1), 1364 get_color(vc, info, scr_readw(s), 0)); 1365 } 1366 1367 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1368 { 1369 unsigned short chr; 1370 1371 scr_writew(c, &chr); 1372 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1373 } 1374 1375 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1376 { 1377 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1378 struct fbcon_ops *ops = info->fbcon_par; 1379 1380 if (!fbcon_is_inactive(vc, info)) 1381 ops->clear_margins(vc, info, margin_color, bottom_only); 1382 } 1383 1384 static void fbcon_cursor(struct vc_data *vc, int mode) 1385 { 1386 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1387 struct fbcon_ops *ops = info->fbcon_par; 1388 int y; 1389 int c = scr_readw((u16 *) vc->vc_pos); 1390 1391 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1392 1393 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1394 return; 1395 1396 if (vc->vc_cursor_type & CUR_SW) 1397 fbcon_del_cursor_timer(info); 1398 else 1399 fbcon_add_cursor_timer(info); 1400 1401 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1402 if (mode & CM_SOFTBACK) { 1403 mode &= ~CM_SOFTBACK; 1404 y = softback_lines; 1405 } else { 1406 if (softback_lines) 1407 fbcon_set_origin(vc); 1408 y = 0; 1409 } 1410 1411 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), 1412 get_color(vc, info, c, 0)); 1413 } 1414 1415 static int scrollback_phys_max = 0; 1416 static int scrollback_max = 0; 1417 static int scrollback_current = 0; 1418 1419 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1420 int unit) 1421 { 1422 struct fbcon_display *p, *t; 1423 struct vc_data **default_mode, *vc; 1424 struct vc_data *svc; 1425 struct fbcon_ops *ops = info->fbcon_par; 1426 int rows, cols, charcnt = 256; 1427 1428 p = &fb_display[unit]; 1429 1430 if (var_to_display(p, var, info)) 1431 return; 1432 1433 vc = vc_cons[unit].d; 1434 1435 if (!vc) 1436 return; 1437 1438 default_mode = vc->vc_display_fg; 1439 svc = *default_mode; 1440 t = &fb_display[svc->vc_num]; 1441 1442 if (!vc->vc_font.data) { 1443 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1444 vc->vc_font.width = (*default_mode)->vc_font.width; 1445 vc->vc_font.height = (*default_mode)->vc_font.height; 1446 p->userfont = t->userfont; 1447 if (p->userfont) 1448 REFCOUNT(p->fontdata)++; 1449 } 1450 if (p->userfont) 1451 charcnt = FNTCHARCNT(p->fontdata); 1452 1453 var->activate = FB_ACTIVATE_NOW; 1454 info->var.activate = var->activate; 1455 var->yoffset = info->var.yoffset; 1456 var->xoffset = info->var.xoffset; 1457 fb_set_var(info, var); 1458 ops->var = info->var; 1459 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1460 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1461 if (charcnt == 256) { 1462 vc->vc_hi_font_mask = 0; 1463 } else { 1464 vc->vc_hi_font_mask = 0x100; 1465 if (vc->vc_can_do_color) 1466 vc->vc_complement_mask <<= 1; 1467 } 1468 1469 if (!*svc->vc_uni_pagedir_loc) 1470 con_set_default_unimap(svc); 1471 if (!*vc->vc_uni_pagedir_loc) 1472 con_copy_unimap(vc, svc); 1473 1474 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1475 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1476 cols /= vc->vc_font.width; 1477 rows /= vc->vc_font.height; 1478 vc_resize(vc, cols, rows); 1479 1480 if (con_is_visible(vc)) { 1481 update_screen(vc); 1482 if (softback_buf) 1483 fbcon_update_softback(vc); 1484 } 1485 } 1486 1487 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1488 { 1489 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1490 struct fbcon_ops *ops = info->fbcon_par; 1491 struct fbcon_display *p = &fb_display[vc->vc_num]; 1492 1493 p->yscroll += count; 1494 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1495 p->yscroll -= p->vrows; 1496 ops->var.xoffset = 0; 1497 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1498 ops->var.vmode |= FB_VMODE_YWRAP; 1499 ops->update_start(info); 1500 scrollback_max += count; 1501 if (scrollback_max > scrollback_phys_max) 1502 scrollback_max = scrollback_phys_max; 1503 scrollback_current = 0; 1504 } 1505 1506 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1507 { 1508 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1509 struct fbcon_ops *ops = info->fbcon_par; 1510 struct fbcon_display *p = &fb_display[vc->vc_num]; 1511 1512 p->yscroll -= count; 1513 if (p->yscroll < 0) /* Deal with wrap */ 1514 p->yscroll += p->vrows; 1515 ops->var.xoffset = 0; 1516 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1517 ops->var.vmode |= FB_VMODE_YWRAP; 1518 ops->update_start(info); 1519 scrollback_max -= count; 1520 if (scrollback_max < 0) 1521 scrollback_max = 0; 1522 scrollback_current = 0; 1523 } 1524 1525 static __inline__ void ypan_up(struct vc_data *vc, int count) 1526 { 1527 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1528 struct fbcon_display *p = &fb_display[vc->vc_num]; 1529 struct fbcon_ops *ops = info->fbcon_par; 1530 1531 p->yscroll += count; 1532 if (p->yscroll > p->vrows - vc->vc_rows) { 1533 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1534 0, 0, 0, vc->vc_rows, vc->vc_cols); 1535 p->yscroll -= p->vrows - vc->vc_rows; 1536 } 1537 1538 ops->var.xoffset = 0; 1539 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1540 ops->var.vmode &= ~FB_VMODE_YWRAP; 1541 ops->update_start(info); 1542 fbcon_clear_margins(vc, 1); 1543 scrollback_max += count; 1544 if (scrollback_max > scrollback_phys_max) 1545 scrollback_max = scrollback_phys_max; 1546 scrollback_current = 0; 1547 } 1548 1549 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1550 { 1551 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1552 struct fbcon_ops *ops = info->fbcon_par; 1553 struct fbcon_display *p = &fb_display[vc->vc_num]; 1554 1555 p->yscroll += count; 1556 1557 if (p->yscroll > p->vrows - vc->vc_rows) { 1558 p->yscroll -= p->vrows - vc->vc_rows; 1559 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1560 } 1561 1562 ops->var.xoffset = 0; 1563 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1564 ops->var.vmode &= ~FB_VMODE_YWRAP; 1565 ops->update_start(info); 1566 fbcon_clear_margins(vc, 1); 1567 scrollback_max += count; 1568 if (scrollback_max > scrollback_phys_max) 1569 scrollback_max = scrollback_phys_max; 1570 scrollback_current = 0; 1571 } 1572 1573 static __inline__ void ypan_down(struct vc_data *vc, int count) 1574 { 1575 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1576 struct fbcon_display *p = &fb_display[vc->vc_num]; 1577 struct fbcon_ops *ops = info->fbcon_par; 1578 1579 p->yscroll -= count; 1580 if (p->yscroll < 0) { 1581 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1582 0, vc->vc_rows, vc->vc_cols); 1583 p->yscroll += p->vrows - vc->vc_rows; 1584 } 1585 1586 ops->var.xoffset = 0; 1587 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1588 ops->var.vmode &= ~FB_VMODE_YWRAP; 1589 ops->update_start(info); 1590 fbcon_clear_margins(vc, 1); 1591 scrollback_max -= count; 1592 if (scrollback_max < 0) 1593 scrollback_max = 0; 1594 scrollback_current = 0; 1595 } 1596 1597 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1598 { 1599 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1600 struct fbcon_ops *ops = info->fbcon_par; 1601 struct fbcon_display *p = &fb_display[vc->vc_num]; 1602 1603 p->yscroll -= count; 1604 1605 if (p->yscroll < 0) { 1606 p->yscroll += p->vrows - vc->vc_rows; 1607 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1608 } 1609 1610 ops->var.xoffset = 0; 1611 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1612 ops->var.vmode &= ~FB_VMODE_YWRAP; 1613 ops->update_start(info); 1614 fbcon_clear_margins(vc, 1); 1615 scrollback_max -= count; 1616 if (scrollback_max < 0) 1617 scrollback_max = 0; 1618 scrollback_current = 0; 1619 } 1620 1621 static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p, 1622 long delta) 1623 { 1624 int count = vc->vc_rows; 1625 unsigned short *d, *s; 1626 unsigned long n; 1627 int line = 0; 1628 1629 d = (u16 *) softback_curr; 1630 if (d == (u16 *) softback_in) 1631 d = (u16 *) vc->vc_origin; 1632 n = softback_curr + delta * vc->vc_size_row; 1633 softback_lines -= delta; 1634 if (delta < 0) { 1635 if (softback_curr < softback_top && n < softback_buf) { 1636 n += softback_end - softback_buf; 1637 if (n < softback_top) { 1638 softback_lines -= 1639 (softback_top - n) / vc->vc_size_row; 1640 n = softback_top; 1641 } 1642 } else if (softback_curr >= softback_top 1643 && n < softback_top) { 1644 softback_lines -= 1645 (softback_top - n) / vc->vc_size_row; 1646 n = softback_top; 1647 } 1648 } else { 1649 if (softback_curr > softback_in && n >= softback_end) { 1650 n += softback_buf - softback_end; 1651 if (n > softback_in) { 1652 n = softback_in; 1653 softback_lines = 0; 1654 } 1655 } else if (softback_curr <= softback_in && n > softback_in) { 1656 n = softback_in; 1657 softback_lines = 0; 1658 } 1659 } 1660 if (n == softback_curr) 1661 return; 1662 softback_curr = n; 1663 s = (u16 *) softback_curr; 1664 if (s == (u16 *) softback_in) 1665 s = (u16 *) vc->vc_origin; 1666 while (count--) { 1667 unsigned short *start; 1668 unsigned short *le; 1669 unsigned short c; 1670 int x = 0; 1671 unsigned short attr = 1; 1672 1673 start = s; 1674 le = advance_row(s, 1); 1675 do { 1676 c = scr_readw(s); 1677 if (attr != (c & 0xff00)) { 1678 attr = c & 0xff00; 1679 if (s > start) { 1680 fbcon_putcs(vc, start, s - start, 1681 line, x); 1682 x += s - start; 1683 start = s; 1684 } 1685 } 1686 if (c == scr_readw(d)) { 1687 if (s > start) { 1688 fbcon_putcs(vc, start, s - start, 1689 line, x); 1690 x += s - start + 1; 1691 start = s + 1; 1692 } else { 1693 x++; 1694 start++; 1695 } 1696 } 1697 s++; 1698 d++; 1699 } while (s < le); 1700 if (s > start) 1701 fbcon_putcs(vc, start, s - start, line, x); 1702 line++; 1703 if (d == (u16 *) softback_end) 1704 d = (u16 *) softback_buf; 1705 if (d == (u16 *) softback_in) 1706 d = (u16 *) vc->vc_origin; 1707 if (s == (u16 *) softback_end) 1708 s = (u16 *) softback_buf; 1709 if (s == (u16 *) softback_in) 1710 s = (u16 *) vc->vc_origin; 1711 } 1712 } 1713 1714 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, 1715 int line, int count, int dy) 1716 { 1717 unsigned short *s = (unsigned short *) 1718 (vc->vc_origin + vc->vc_size_row * line); 1719 1720 while (count--) { 1721 unsigned short *start = s; 1722 unsigned short *le = advance_row(s, 1); 1723 unsigned short c; 1724 int x = 0; 1725 unsigned short attr = 1; 1726 1727 do { 1728 c = scr_readw(s); 1729 if (attr != (c & 0xff00)) { 1730 attr = c & 0xff00; 1731 if (s > start) { 1732 fbcon_putcs(vc, start, s - start, 1733 dy, x); 1734 x += s - start; 1735 start = s; 1736 } 1737 } 1738 console_conditional_schedule(); 1739 s++; 1740 } while (s < le); 1741 if (s > start) 1742 fbcon_putcs(vc, start, s - start, dy, x); 1743 console_conditional_schedule(); 1744 dy++; 1745 } 1746 } 1747 1748 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1749 struct fbcon_display *p, int line, int count, int ycount) 1750 { 1751 int offset = ycount * vc->vc_cols; 1752 unsigned short *d = (unsigned short *) 1753 (vc->vc_origin + vc->vc_size_row * line); 1754 unsigned short *s = d + offset; 1755 struct fbcon_ops *ops = info->fbcon_par; 1756 1757 while (count--) { 1758 unsigned short *start = s; 1759 unsigned short *le = advance_row(s, 1); 1760 unsigned short c; 1761 int x = 0; 1762 1763 do { 1764 c = scr_readw(s); 1765 1766 if (c == scr_readw(d)) { 1767 if (s > start) { 1768 ops->bmove(vc, info, line + ycount, x, 1769 line, x, 1, s-start); 1770 x += s - start + 1; 1771 start = s + 1; 1772 } else { 1773 x++; 1774 start++; 1775 } 1776 } 1777 1778 scr_writew(c, d); 1779 console_conditional_schedule(); 1780 s++; 1781 d++; 1782 } while (s < le); 1783 if (s > start) 1784 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1785 s-start); 1786 console_conditional_schedule(); 1787 if (ycount > 0) 1788 line++; 1789 else { 1790 line--; 1791 /* NOTE: We subtract two lines from these pointers */ 1792 s -= vc->vc_size_row; 1793 d -= vc->vc_size_row; 1794 } 1795 } 1796 } 1797 1798 static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p, 1799 int line, int count, int offset) 1800 { 1801 unsigned short *d = (unsigned short *) 1802 (vc->vc_origin + vc->vc_size_row * line); 1803 unsigned short *s = d + offset; 1804 1805 while (count--) { 1806 unsigned short *start = s; 1807 unsigned short *le = advance_row(s, 1); 1808 unsigned short c; 1809 int x = 0; 1810 unsigned short attr = 1; 1811 1812 do { 1813 c = scr_readw(s); 1814 if (attr != (c & 0xff00)) { 1815 attr = c & 0xff00; 1816 if (s > start) { 1817 fbcon_putcs(vc, start, s - start, 1818 line, x); 1819 x += s - start; 1820 start = s; 1821 } 1822 } 1823 if (c == scr_readw(d)) { 1824 if (s > start) { 1825 fbcon_putcs(vc, start, s - start, 1826 line, x); 1827 x += s - start + 1; 1828 start = s + 1; 1829 } else { 1830 x++; 1831 start++; 1832 } 1833 } 1834 scr_writew(c, d); 1835 console_conditional_schedule(); 1836 s++; 1837 d++; 1838 } while (s < le); 1839 if (s > start) 1840 fbcon_putcs(vc, start, s - start, line, x); 1841 console_conditional_schedule(); 1842 if (offset > 0) 1843 line++; 1844 else { 1845 line--; 1846 /* NOTE: We subtract two lines from these pointers */ 1847 s -= vc->vc_size_row; 1848 d -= vc->vc_size_row; 1849 } 1850 } 1851 } 1852 1853 static inline void fbcon_softback_note(struct vc_data *vc, int t, 1854 int count) 1855 { 1856 unsigned short *p; 1857 1858 if (vc->vc_num != fg_console) 1859 return; 1860 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); 1861 1862 while (count) { 1863 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); 1864 count--; 1865 p = advance_row(p, 1); 1866 softback_in += vc->vc_size_row; 1867 if (softback_in == softback_end) 1868 softback_in = softback_buf; 1869 if (softback_in == softback_top) { 1870 softback_top += vc->vc_size_row; 1871 if (softback_top == softback_end) 1872 softback_top = softback_buf; 1873 } 1874 } 1875 softback_curr = softback_in; 1876 } 1877 1878 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1879 enum con_scroll dir, unsigned int count) 1880 { 1881 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1882 struct fbcon_display *p = &fb_display[vc->vc_num]; 1883 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1884 1885 if (fbcon_is_inactive(vc, info)) 1886 return true; 1887 1888 fbcon_cursor(vc, CM_ERASE); 1889 1890 /* 1891 * ++Geert: Only use ywrap/ypan if the console is in text mode 1892 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1893 * whole screen (prevents flicker). 1894 */ 1895 1896 switch (dir) { 1897 case SM_UP: 1898 if (count > vc->vc_rows) /* Maximum realistic size */ 1899 count = vc->vc_rows; 1900 if (softback_top) 1901 fbcon_softback_note(vc, t, count); 1902 if (logo_shown >= 0) 1903 goto redraw_up; 1904 switch (p->scrollmode) { 1905 case SCROLL_MOVE: 1906 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1907 count); 1908 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1909 scr_memsetw((unsigned short *) (vc->vc_origin + 1910 vc->vc_size_row * 1911 (b - count)), 1912 vc->vc_video_erase_char, 1913 vc->vc_size_row * count); 1914 return true; 1915 1916 case SCROLL_WRAP_MOVE: 1917 if (b - t - count > 3 * vc->vc_rows >> 2) { 1918 if (t > 0) 1919 fbcon_bmove(vc, 0, 0, count, 0, t, 1920 vc->vc_cols); 1921 ywrap_up(vc, count); 1922 if (vc->vc_rows - b > 0) 1923 fbcon_bmove(vc, b - count, 0, b, 0, 1924 vc->vc_rows - b, 1925 vc->vc_cols); 1926 } else if (info->flags & FBINFO_READS_FAST) 1927 fbcon_bmove(vc, t + count, 0, t, 0, 1928 b - t - count, vc->vc_cols); 1929 else 1930 goto redraw_up; 1931 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1932 break; 1933 1934 case SCROLL_PAN_REDRAW: 1935 if ((p->yscroll + count <= 1936 2 * (p->vrows - vc->vc_rows)) 1937 && ((!scroll_partial && (b - t == vc->vc_rows)) 1938 || (scroll_partial 1939 && (b - t - count > 1940 3 * vc->vc_rows >> 2)))) { 1941 if (t > 0) 1942 fbcon_redraw_move(vc, p, 0, t, count); 1943 ypan_up_redraw(vc, t, count); 1944 if (vc->vc_rows - b > 0) 1945 fbcon_redraw_move(vc, p, b, 1946 vc->vc_rows - b, b); 1947 } else 1948 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1949 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1950 break; 1951 1952 case SCROLL_PAN_MOVE: 1953 if ((p->yscroll + count <= 1954 2 * (p->vrows - vc->vc_rows)) 1955 && ((!scroll_partial && (b - t == vc->vc_rows)) 1956 || (scroll_partial 1957 && (b - t - count > 1958 3 * vc->vc_rows >> 2)))) { 1959 if (t > 0) 1960 fbcon_bmove(vc, 0, 0, count, 0, t, 1961 vc->vc_cols); 1962 ypan_up(vc, count); 1963 if (vc->vc_rows - b > 0) 1964 fbcon_bmove(vc, b - count, 0, b, 0, 1965 vc->vc_rows - b, 1966 vc->vc_cols); 1967 } else if (info->flags & FBINFO_READS_FAST) 1968 fbcon_bmove(vc, t + count, 0, t, 0, 1969 b - t - count, vc->vc_cols); 1970 else 1971 goto redraw_up; 1972 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1973 break; 1974 1975 case SCROLL_REDRAW: 1976 redraw_up: 1977 fbcon_redraw(vc, p, t, b - t - count, 1978 count * vc->vc_cols); 1979 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1980 scr_memsetw((unsigned short *) (vc->vc_origin + 1981 vc->vc_size_row * 1982 (b - count)), 1983 vc->vc_video_erase_char, 1984 vc->vc_size_row * count); 1985 return true; 1986 } 1987 break; 1988 1989 case SM_DOWN: 1990 if (count > vc->vc_rows) /* Maximum realistic size */ 1991 count = vc->vc_rows; 1992 if (logo_shown >= 0) 1993 goto redraw_down; 1994 switch (p->scrollmode) { 1995 case SCROLL_MOVE: 1996 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1997 -count); 1998 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1999 scr_memsetw((unsigned short *) (vc->vc_origin + 2000 vc->vc_size_row * 2001 t), 2002 vc->vc_video_erase_char, 2003 vc->vc_size_row * count); 2004 return true; 2005 2006 case SCROLL_WRAP_MOVE: 2007 if (b - t - count > 3 * vc->vc_rows >> 2) { 2008 if (vc->vc_rows - b > 0) 2009 fbcon_bmove(vc, b, 0, b - count, 0, 2010 vc->vc_rows - b, 2011 vc->vc_cols); 2012 ywrap_down(vc, count); 2013 if (t > 0) 2014 fbcon_bmove(vc, count, 0, 0, 0, t, 2015 vc->vc_cols); 2016 } else if (info->flags & FBINFO_READS_FAST) 2017 fbcon_bmove(vc, t, 0, t + count, 0, 2018 b - t - count, vc->vc_cols); 2019 else 2020 goto redraw_down; 2021 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2022 break; 2023 2024 case SCROLL_PAN_MOVE: 2025 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 2026 && ((!scroll_partial && (b - t == vc->vc_rows)) 2027 || (scroll_partial 2028 && (b - t - count > 2029 3 * vc->vc_rows >> 2)))) { 2030 if (vc->vc_rows - b > 0) 2031 fbcon_bmove(vc, b, 0, b - count, 0, 2032 vc->vc_rows - b, 2033 vc->vc_cols); 2034 ypan_down(vc, count); 2035 if (t > 0) 2036 fbcon_bmove(vc, count, 0, 0, 0, t, 2037 vc->vc_cols); 2038 } else if (info->flags & FBINFO_READS_FAST) 2039 fbcon_bmove(vc, t, 0, t + count, 0, 2040 b - t - count, vc->vc_cols); 2041 else 2042 goto redraw_down; 2043 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2044 break; 2045 2046 case SCROLL_PAN_REDRAW: 2047 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 2048 && ((!scroll_partial && (b - t == vc->vc_rows)) 2049 || (scroll_partial 2050 && (b - t - count > 2051 3 * vc->vc_rows >> 2)))) { 2052 if (vc->vc_rows - b > 0) 2053 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 2054 b - count); 2055 ypan_down_redraw(vc, t, count); 2056 if (t > 0) 2057 fbcon_redraw_move(vc, p, count, t, 0); 2058 } else 2059 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 2060 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2061 break; 2062 2063 case SCROLL_REDRAW: 2064 redraw_down: 2065 fbcon_redraw(vc, p, b - 1, b - t - count, 2066 -count * vc->vc_cols); 2067 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2068 scr_memsetw((unsigned short *) (vc->vc_origin + 2069 vc->vc_size_row * 2070 t), 2071 vc->vc_video_erase_char, 2072 vc->vc_size_row * count); 2073 return true; 2074 } 2075 } 2076 return false; 2077 } 2078 2079 2080 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 2081 int height, int width) 2082 { 2083 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2084 struct fbcon_display *p = &fb_display[vc->vc_num]; 2085 2086 if (fbcon_is_inactive(vc, info)) 2087 return; 2088 2089 if (!width || !height) 2090 return; 2091 2092 /* Split blits that cross physical y_wrap case. 2093 * Pathological case involves 4 blits, better to use recursive 2094 * code rather than unrolled case 2095 * 2096 * Recursive invocations don't need to erase the cursor over and 2097 * over again, so we use fbcon_bmove_rec() 2098 */ 2099 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 2100 p->vrows - p->yscroll); 2101 } 2102 2103 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, 2104 int dy, int dx, int height, int width, u_int y_break) 2105 { 2106 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2107 struct fbcon_ops *ops = info->fbcon_par; 2108 u_int b; 2109 2110 if (sy < y_break && sy + height > y_break) { 2111 b = y_break - sy; 2112 if (dy < sy) { /* Avoid trashing self */ 2113 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2114 y_break); 2115 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2116 height - b, width, y_break); 2117 } else { 2118 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2119 height - b, width, y_break); 2120 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2121 y_break); 2122 } 2123 return; 2124 } 2125 2126 if (dy < y_break && dy + height > y_break) { 2127 b = y_break - dy; 2128 if (dy < sy) { /* Avoid trashing self */ 2129 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2130 y_break); 2131 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2132 height - b, width, y_break); 2133 } else { 2134 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2135 height - b, width, y_break); 2136 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2137 y_break); 2138 } 2139 return; 2140 } 2141 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 2142 height, width); 2143 } 2144 2145 static void updatescrollmode(struct fbcon_display *p, 2146 struct fb_info *info, 2147 struct vc_data *vc) 2148 { 2149 struct fbcon_ops *ops = info->fbcon_par; 2150 int fh = vc->vc_font.height; 2151 int cap = info->flags; 2152 u16 t = 0; 2153 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 2154 info->fix.xpanstep); 2155 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 2156 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2157 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 2158 info->var.xres_virtual); 2159 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 2160 divides(ypan, vc->vc_font.height) && vyres > yres; 2161 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 2162 divides(ywrap, vc->vc_font.height) && 2163 divides(vc->vc_font.height, vyres) && 2164 divides(vc->vc_font.height, yres); 2165 int reading_fast = cap & FBINFO_READS_FAST; 2166 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 2167 !(cap & FBINFO_HWACCEL_DISABLED); 2168 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 2169 !(cap & FBINFO_HWACCEL_DISABLED); 2170 2171 p->vrows = vyres/fh; 2172 if (yres > (fh * (vc->vc_rows + 1))) 2173 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 2174 if ((yres % fh) && (vyres % fh < yres % fh)) 2175 p->vrows--; 2176 2177 if (good_wrap || good_pan) { 2178 if (reading_fast || fast_copyarea) 2179 p->scrollmode = good_wrap ? 2180 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 2181 else 2182 p->scrollmode = good_wrap ? SCROLL_REDRAW : 2183 SCROLL_PAN_REDRAW; 2184 } else { 2185 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2186 p->scrollmode = SCROLL_MOVE; 2187 else 2188 p->scrollmode = SCROLL_REDRAW; 2189 } 2190 } 2191 2192 #define PITCH(w) (((w) + 7) >> 3) 2193 #define CALC_FONTSZ(h, p, c) ((h) * (p) * (c)) /* size = height * pitch * charcount */ 2194 2195 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2196 unsigned int height, unsigned int user) 2197 { 2198 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2199 struct fbcon_ops *ops = info->fbcon_par; 2200 struct fbcon_display *p = &fb_display[vc->vc_num]; 2201 struct fb_var_screeninfo var = info->var; 2202 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2203 2204 if (ops->p && ops->p->userfont && FNTSIZE(vc->vc_font.data)) { 2205 int size; 2206 int pitch = PITCH(vc->vc_font.width); 2207 2208 /* 2209 * If user font, ensure that a possible change to user font 2210 * height or width will not allow a font data out-of-bounds access. 2211 * NOTE: must use original charcount in calculation as font 2212 * charcount can change and cannot be used to determine the 2213 * font data allocated size. 2214 */ 2215 if (pitch <= 0) 2216 return -EINVAL; 2217 size = CALC_FONTSZ(vc->vc_font.height, pitch, FNTCHARCNT(vc->vc_font.data)); 2218 if (size > FNTSIZE(vc->vc_font.data)) 2219 return -EINVAL; 2220 } 2221 2222 virt_w = FBCON_SWAP(ops->rotate, width, height); 2223 virt_h = FBCON_SWAP(ops->rotate, height, width); 2224 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2225 vc->vc_font.height); 2226 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2227 vc->vc_font.width); 2228 var.xres = virt_w * virt_fw; 2229 var.yres = virt_h * virt_fh; 2230 x_diff = info->var.xres - var.xres; 2231 y_diff = info->var.yres - var.yres; 2232 if (x_diff < 0 || x_diff > virt_fw || 2233 y_diff < 0 || y_diff > virt_fh) { 2234 const struct fb_videomode *mode; 2235 2236 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2237 mode = fb_find_best_mode(&var, &info->modelist); 2238 if (mode == NULL) 2239 return -EINVAL; 2240 display_to_var(&var, p); 2241 fb_videomode_to_var(&var, mode); 2242 2243 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2244 return -EINVAL; 2245 2246 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2247 if (con_is_visible(vc)) { 2248 var.activate = FB_ACTIVATE_NOW | 2249 FB_ACTIVATE_FORCE; 2250 fb_set_var(info, &var); 2251 } 2252 var_to_display(p, &info->var, info); 2253 ops->var = info->var; 2254 } 2255 updatescrollmode(p, info, vc); 2256 return 0; 2257 } 2258 2259 static int fbcon_switch(struct vc_data *vc) 2260 { 2261 struct fb_info *info, *old_info = NULL; 2262 struct fbcon_ops *ops; 2263 struct fbcon_display *p = &fb_display[vc->vc_num]; 2264 struct fb_var_screeninfo var; 2265 int i, ret, prev_console, charcnt = 256; 2266 2267 info = registered_fb[con2fb_map[vc->vc_num]]; 2268 ops = info->fbcon_par; 2269 2270 if (softback_top) { 2271 if (softback_lines) 2272 fbcon_set_origin(vc); 2273 softback_top = softback_curr = softback_in = softback_buf; 2274 softback_lines = 0; 2275 fbcon_update_softback(vc); 2276 } 2277 2278 if (logo_shown >= 0) { 2279 struct vc_data *conp2 = vc_cons[logo_shown].d; 2280 2281 if (conp2->vc_top == logo_lines 2282 && conp2->vc_bottom == conp2->vc_rows) 2283 conp2->vc_top = 0; 2284 logo_shown = FBCON_LOGO_CANSHOW; 2285 } 2286 2287 prev_console = ops->currcon; 2288 if (prev_console != -1) 2289 old_info = registered_fb[con2fb_map[prev_console]]; 2290 /* 2291 * FIXME: If we have multiple fbdev's loaded, we need to 2292 * update all info->currcon. Perhaps, we can place this 2293 * in a centralized structure, but this might break some 2294 * drivers. 2295 * 2296 * info->currcon = vc->vc_num; 2297 */ 2298 for_each_registered_fb(i) { 2299 if (registered_fb[i]->fbcon_par) { 2300 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2301 2302 o->currcon = vc->vc_num; 2303 } 2304 } 2305 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2306 display_to_var(&var, p); 2307 var.activate = FB_ACTIVATE_NOW; 2308 2309 /* 2310 * make sure we don't unnecessarily trip the memcmp() 2311 * in fb_set_var() 2312 */ 2313 info->var.activate = var.activate; 2314 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2315 fb_set_var(info, &var); 2316 ops->var = info->var; 2317 2318 if (old_info != NULL && (old_info != info || 2319 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2320 if (info->fbops->fb_set_par) { 2321 ret = info->fbops->fb_set_par(info); 2322 2323 if (ret) 2324 printk(KERN_ERR "fbcon_switch: detected " 2325 "unhandled fb_set_par error, " 2326 "error code %d\n", ret); 2327 } 2328 2329 if (old_info != info) 2330 fbcon_del_cursor_timer(old_info); 2331 } 2332 2333 if (fbcon_is_inactive(vc, info) || 2334 ops->blank_state != FB_BLANK_UNBLANK) 2335 fbcon_del_cursor_timer(info); 2336 else 2337 fbcon_add_cursor_timer(info); 2338 2339 set_blitting_type(vc, info); 2340 ops->cursor_reset = 1; 2341 2342 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2343 ops->rotate = FB_ROTATE_UR; 2344 set_blitting_type(vc, info); 2345 } 2346 2347 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2348 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2349 2350 if (p->userfont) 2351 charcnt = FNTCHARCNT(vc->vc_font.data); 2352 2353 if (charcnt > 256) 2354 vc->vc_complement_mask <<= 1; 2355 2356 updatescrollmode(p, info, vc); 2357 2358 switch (p->scrollmode) { 2359 case SCROLL_WRAP_MOVE: 2360 scrollback_phys_max = p->vrows - vc->vc_rows; 2361 break; 2362 case SCROLL_PAN_MOVE: 2363 case SCROLL_PAN_REDRAW: 2364 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2365 if (scrollback_phys_max < 0) 2366 scrollback_phys_max = 0; 2367 break; 2368 default: 2369 scrollback_phys_max = 0; 2370 break; 2371 } 2372 2373 scrollback_max = 0; 2374 scrollback_current = 0; 2375 2376 if (!fbcon_is_inactive(vc, info)) { 2377 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2378 ops->update_start(info); 2379 } 2380 2381 fbcon_set_palette(vc, color_table); 2382 fbcon_clear_margins(vc, 0); 2383 2384 if (logo_shown == FBCON_LOGO_DRAW) { 2385 2386 logo_shown = fg_console; 2387 /* This is protected above by initmem_freed */ 2388 fb_show_logo(info, ops->rotate); 2389 update_region(vc, 2390 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2391 vc->vc_size_row * (vc->vc_bottom - 2392 vc->vc_top) / 2); 2393 return 0; 2394 } 2395 return 1; 2396 } 2397 2398 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2399 int blank) 2400 { 2401 if (blank) { 2402 unsigned short charmask = vc->vc_hi_font_mask ? 2403 0x1ff : 0xff; 2404 unsigned short oldc; 2405 2406 oldc = vc->vc_video_erase_char; 2407 vc->vc_video_erase_char &= charmask; 2408 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2409 vc->vc_video_erase_char = oldc; 2410 } 2411 } 2412 2413 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2414 { 2415 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2416 struct fbcon_ops *ops = info->fbcon_par; 2417 2418 if (mode_switch) { 2419 struct fb_var_screeninfo var = info->var; 2420 2421 ops->graphics = 1; 2422 2423 if (!blank) { 2424 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE | 2425 FB_ACTIVATE_KD_TEXT; 2426 fb_set_var(info, &var); 2427 ops->graphics = 0; 2428 ops->var = info->var; 2429 } 2430 } 2431 2432 if (!fbcon_is_inactive(vc, info)) { 2433 if (ops->blank_state != blank) { 2434 ops->blank_state = blank; 2435 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2436 ops->cursor_flash = (!blank); 2437 2438 if (fb_blank(info, blank)) 2439 fbcon_generic_blank(vc, info, blank); 2440 } 2441 2442 if (!blank) 2443 update_screen(vc); 2444 } 2445 2446 if (mode_switch || fbcon_is_inactive(vc, info) || 2447 ops->blank_state != FB_BLANK_UNBLANK) 2448 fbcon_del_cursor_timer(info); 2449 else 2450 fbcon_add_cursor_timer(info); 2451 2452 return 0; 2453 } 2454 2455 static int fbcon_debug_enter(struct vc_data *vc) 2456 { 2457 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2458 struct fbcon_ops *ops = info->fbcon_par; 2459 2460 ops->save_graphics = ops->graphics; 2461 ops->graphics = 0; 2462 if (info->fbops->fb_debug_enter) 2463 info->fbops->fb_debug_enter(info); 2464 fbcon_set_palette(vc, color_table); 2465 return 0; 2466 } 2467 2468 static int fbcon_debug_leave(struct vc_data *vc) 2469 { 2470 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2471 struct fbcon_ops *ops = info->fbcon_par; 2472 2473 ops->graphics = ops->save_graphics; 2474 if (info->fbops->fb_debug_leave) 2475 info->fbops->fb_debug_leave(info); 2476 return 0; 2477 } 2478 2479 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2480 { 2481 u8 *fontdata = vc->vc_font.data; 2482 u8 *data = font->data; 2483 int i, j; 2484 2485 font->width = vc->vc_font.width; 2486 font->height = vc->vc_font.height; 2487 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2488 if (!font->data) 2489 return 0; 2490 2491 if (font->width <= 8) { 2492 j = vc->vc_font.height; 2493 for (i = 0; i < font->charcount; i++) { 2494 memcpy(data, fontdata, j); 2495 memset(data + j, 0, 32 - j); 2496 data += 32; 2497 fontdata += j; 2498 } 2499 } else if (font->width <= 16) { 2500 j = vc->vc_font.height * 2; 2501 for (i = 0; i < font->charcount; i++) { 2502 memcpy(data, fontdata, j); 2503 memset(data + j, 0, 64 - j); 2504 data += 64; 2505 fontdata += j; 2506 } 2507 } else if (font->width <= 24) { 2508 for (i = 0; i < font->charcount; i++) { 2509 for (j = 0; j < vc->vc_font.height; j++) { 2510 *data++ = fontdata[0]; 2511 *data++ = fontdata[1]; 2512 *data++ = fontdata[2]; 2513 fontdata += sizeof(u32); 2514 } 2515 memset(data, 0, 3 * (32 - j)); 2516 data += 3 * (32 - j); 2517 } 2518 } else { 2519 j = vc->vc_font.height * 4; 2520 for (i = 0; i < font->charcount; i++) { 2521 memcpy(data, fontdata, j); 2522 memset(data + j, 0, 128 - j); 2523 data += 128; 2524 fontdata += j; 2525 } 2526 } 2527 return 0; 2528 } 2529 2530 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2531 static void set_vc_hi_font(struct vc_data *vc, bool set) 2532 { 2533 if (!set) { 2534 vc->vc_hi_font_mask = 0; 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 if (vc->vc_can_do_color) { 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 c = scr_readw(cp); 2548 scr_writew(((c & 0xfe00) >> 1) | 2549 (c & 0xff), cp); 2550 } 2551 c = vc->vc_video_erase_char; 2552 vc->vc_video_erase_char = 2553 ((c & 0xfe00) >> 1) | (c & 0xff); 2554 vc->vc_attr >>= 1; 2555 } 2556 } else { 2557 vc->vc_hi_font_mask = 0x100; 2558 if (vc->vc_can_do_color) { 2559 vc->vc_complement_mask <<= 1; 2560 vc->vc_s_complement_mask <<= 1; 2561 } 2562 2563 /* ++Edmund: reorder the attribute bits */ 2564 { 2565 unsigned short *cp = 2566 (unsigned short *) vc->vc_origin; 2567 int count = vc->vc_screenbuf_size / 2; 2568 unsigned short c; 2569 for (; count > 0; count--, cp++) { 2570 unsigned short newc; 2571 c = scr_readw(cp); 2572 if (vc->vc_can_do_color) 2573 newc = 2574 ((c & 0xff00) << 1) | (c & 2575 0xff); 2576 else 2577 newc = c & ~0x100; 2578 scr_writew(newc, cp); 2579 } 2580 c = vc->vc_video_erase_char; 2581 if (vc->vc_can_do_color) { 2582 vc->vc_video_erase_char = 2583 ((c & 0xff00) << 1) | (c & 0xff); 2584 vc->vc_attr <<= 1; 2585 } else 2586 vc->vc_video_erase_char = c & ~0x100; 2587 } 2588 } 2589 } 2590 2591 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2592 const u8 * data, int userfont) 2593 { 2594 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2595 struct fbcon_ops *ops = info->fbcon_par; 2596 struct fbcon_display *p = &fb_display[vc->vc_num]; 2597 int resize; 2598 int cnt; 2599 char *old_data = NULL; 2600 2601 if (con_is_visible(vc) && softback_lines) 2602 fbcon_set_origin(vc); 2603 2604 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2605 if (p->userfont) 2606 old_data = vc->vc_font.data; 2607 if (userfont) 2608 cnt = FNTCHARCNT(data); 2609 else 2610 cnt = 256; 2611 vc->vc_font.data = (void *)(p->fontdata = data); 2612 if ((p->userfont = userfont)) 2613 REFCOUNT(data)++; 2614 vc->vc_font.width = w; 2615 vc->vc_font.height = h; 2616 if (vc->vc_hi_font_mask && cnt == 256) 2617 set_vc_hi_font(vc, false); 2618 else if (!vc->vc_hi_font_mask && cnt == 512) 2619 set_vc_hi_font(vc, true); 2620 2621 if (resize) { 2622 int cols, rows; 2623 2624 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2625 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2626 cols /= w; 2627 rows /= h; 2628 vc_resize(vc, cols, rows); 2629 if (con_is_visible(vc) && softback_buf) 2630 fbcon_update_softback(vc); 2631 } else if (con_is_visible(vc) 2632 && vc->vc_mode == KD_TEXT) { 2633 fbcon_clear_margins(vc, 0); 2634 update_screen(vc); 2635 } 2636 2637 if (old_data && (--REFCOUNT(old_data) == 0)) 2638 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2639 return 0; 2640 } 2641 2642 static int fbcon_copy_font(struct vc_data *vc, int con) 2643 { 2644 struct fbcon_display *od = &fb_display[con]; 2645 struct console_font *f = &vc->vc_font; 2646 2647 if (od->fontdata == f->data) 2648 return 0; /* already the same font... */ 2649 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2650 } 2651 2652 /* 2653 * User asked to set font; we are guaranteed that 2654 * a) width and height are in range 1..32 2655 * b) charcount does not exceed 512 2656 * but lets not assume that, since someone might someday want to use larger 2657 * fonts. And charcount of 512 is small for unicode support. 2658 * 2659 * However, user space gives the font in 32 rows , regardless of 2660 * actual font height. So a new API is needed if support for larger fonts 2661 * is ever implemented. 2662 */ 2663 2664 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, 2665 unsigned int flags) 2666 { 2667 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2668 unsigned charcount = font->charcount; 2669 int w = font->width; 2670 int h = font->height; 2671 int size; 2672 int i, csum; 2673 u8 *new_data, *data = font->data; 2674 int pitch = PITCH(font->width); 2675 2676 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2677 * If not this check should be changed to charcount < 256 */ 2678 if (charcount != 256 && charcount != 512) 2679 return -EINVAL; 2680 2681 /* Make sure drawing engine can handle the font */ 2682 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2683 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2684 return -EINVAL; 2685 2686 /* Make sure driver can handle the font length */ 2687 if (fbcon_invalid_charcount(info, charcount)) 2688 return -EINVAL; 2689 2690 size = CALC_FONTSZ(h, pitch, charcount); 2691 2692 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2693 2694 if (!new_data) 2695 return -ENOMEM; 2696 2697 new_data += FONT_EXTRA_WORDS * sizeof(int); 2698 FNTSIZE(new_data) = size; 2699 FNTCHARCNT(new_data) = charcount; 2700 REFCOUNT(new_data) = 0; /* usage counter */ 2701 for (i=0; i< charcount; i++) { 2702 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2703 } 2704 2705 /* Since linux has a nice crc32 function use it for counting font 2706 * checksums. */ 2707 csum = crc32(0, new_data, size); 2708 2709 FNTSUM(new_data) = csum; 2710 /* Check if the same font is on some other console already */ 2711 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2712 struct vc_data *tmp = vc_cons[i].d; 2713 2714 if (fb_display[i].userfont && 2715 fb_display[i].fontdata && 2716 FNTSUM(fb_display[i].fontdata) == csum && 2717 FNTSIZE(fb_display[i].fontdata) == size && 2718 tmp->vc_font.width == w && 2719 !memcmp(fb_display[i].fontdata, new_data, size)) { 2720 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2721 new_data = (u8 *)fb_display[i].fontdata; 2722 break; 2723 } 2724 } 2725 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2726 } 2727 2728 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2729 { 2730 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2731 const struct font_desc *f; 2732 2733 if (!name) 2734 f = get_default_font(info->var.xres, info->var.yres, 2735 info->pixmap.blit_x, info->pixmap.blit_y); 2736 else if (!(f = find_font(name))) 2737 return -ENOENT; 2738 2739 font->width = f->width; 2740 font->height = f->height; 2741 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2742 } 2743 2744 static u16 palette_red[16]; 2745 static u16 palette_green[16]; 2746 static u16 palette_blue[16]; 2747 2748 static struct fb_cmap palette_cmap = { 2749 0, 16, palette_red, palette_green, palette_blue, NULL 2750 }; 2751 2752 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2753 { 2754 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2755 int i, j, k, depth; 2756 u8 val; 2757 2758 if (fbcon_is_inactive(vc, info)) 2759 return; 2760 2761 if (!con_is_visible(vc)) 2762 return; 2763 2764 depth = fb_get_color_depth(&info->var, &info->fix); 2765 if (depth > 3) { 2766 for (i = j = 0; i < 16; i++) { 2767 k = table[i]; 2768 val = vc->vc_palette[j++]; 2769 palette_red[k] = (val << 8) | val; 2770 val = vc->vc_palette[j++]; 2771 palette_green[k] = (val << 8) | val; 2772 val = vc->vc_palette[j++]; 2773 palette_blue[k] = (val << 8) | val; 2774 } 2775 palette_cmap.len = 16; 2776 palette_cmap.start = 0; 2777 /* 2778 * If framebuffer is capable of less than 16 colors, 2779 * use default palette of fbcon. 2780 */ 2781 } else 2782 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2783 2784 fb_set_cmap(&palette_cmap, info); 2785 } 2786 2787 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) 2788 { 2789 unsigned long p; 2790 int line; 2791 2792 if (vc->vc_num != fg_console || !softback_lines) 2793 return (u16 *) (vc->vc_origin + offset); 2794 line = offset / vc->vc_size_row; 2795 if (line >= softback_lines) 2796 return (u16 *) (vc->vc_origin + offset - 2797 softback_lines * vc->vc_size_row); 2798 p = softback_curr + offset; 2799 if (p >= softback_end) 2800 p += softback_buf - softback_end; 2801 return (u16 *) p; 2802 } 2803 2804 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2805 int *px, int *py) 2806 { 2807 unsigned long ret; 2808 int x, y; 2809 2810 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2811 unsigned long offset = (pos - vc->vc_origin) / 2; 2812 2813 x = offset % vc->vc_cols; 2814 y = offset / vc->vc_cols; 2815 if (vc->vc_num == fg_console) 2816 y += softback_lines; 2817 ret = pos + (vc->vc_cols - x) * 2; 2818 } else if (vc->vc_num == fg_console && softback_lines) { 2819 unsigned long offset = pos - softback_curr; 2820 2821 if (pos < softback_curr) 2822 offset += softback_end - softback_buf; 2823 offset /= 2; 2824 x = offset % vc->vc_cols; 2825 y = offset / vc->vc_cols; 2826 ret = pos + (vc->vc_cols - x) * 2; 2827 if (ret == softback_end) 2828 ret = softback_buf; 2829 if (ret == softback_in) 2830 ret = vc->vc_origin; 2831 } else { 2832 /* Should not happen */ 2833 x = y = 0; 2834 ret = vc->vc_origin; 2835 } 2836 if (px) 2837 *px = x; 2838 if (py) 2839 *py = y; 2840 return ret; 2841 } 2842 2843 /* As we might be inside of softback, we may work with non-contiguous buffer, 2844 that's why we have to use a separate routine. */ 2845 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2846 { 2847 while (cnt--) { 2848 u16 a = scr_readw(p); 2849 if (!vc->vc_can_do_color) 2850 a ^= 0x0800; 2851 else if (vc->vc_hi_font_mask == 0x100) 2852 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2853 (((a) & 0x0e00) << 4); 2854 else 2855 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2856 (((a) & 0x0700) << 4); 2857 scr_writew(a, p++); 2858 if (p == (u16 *) softback_end) 2859 p = (u16 *) softback_buf; 2860 if (p == (u16 *) softback_in) 2861 p = (u16 *) vc->vc_origin; 2862 } 2863 } 2864 2865 static void fbcon_scrolldelta(struct vc_data *vc, int lines) 2866 { 2867 struct fb_info *info = registered_fb[con2fb_map[fg_console]]; 2868 struct fbcon_ops *ops = info->fbcon_par; 2869 struct fbcon_display *disp = &fb_display[fg_console]; 2870 int offset, limit, scrollback_old; 2871 2872 if (softback_top) { 2873 if (vc->vc_num != fg_console) 2874 return; 2875 if (vc->vc_mode != KD_TEXT || !lines) 2876 return; 2877 if (logo_shown >= 0) { 2878 struct vc_data *conp2 = vc_cons[logo_shown].d; 2879 2880 if (conp2->vc_top == logo_lines 2881 && conp2->vc_bottom == conp2->vc_rows) 2882 conp2->vc_top = 0; 2883 if (logo_shown == vc->vc_num) { 2884 unsigned long p, q; 2885 int i; 2886 2887 p = softback_in; 2888 q = vc->vc_origin + 2889 logo_lines * vc->vc_size_row; 2890 for (i = 0; i < logo_lines; i++) { 2891 if (p == softback_top) 2892 break; 2893 if (p == softback_buf) 2894 p = softback_end; 2895 p -= vc->vc_size_row; 2896 q -= vc->vc_size_row; 2897 scr_memcpyw((u16 *) q, (u16 *) p, 2898 vc->vc_size_row); 2899 } 2900 softback_in = softback_curr = p; 2901 update_region(vc, vc->vc_origin, 2902 logo_lines * vc->vc_cols); 2903 } 2904 logo_shown = FBCON_LOGO_CANSHOW; 2905 } 2906 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); 2907 fbcon_redraw_softback(vc, disp, lines); 2908 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); 2909 return; 2910 } 2911 2912 if (!scrollback_phys_max) 2913 return; 2914 2915 scrollback_old = scrollback_current; 2916 scrollback_current -= lines; 2917 if (scrollback_current < 0) 2918 scrollback_current = 0; 2919 else if (scrollback_current > scrollback_max) 2920 scrollback_current = scrollback_max; 2921 if (scrollback_current == scrollback_old) 2922 return; 2923 2924 if (fbcon_is_inactive(vc, info)) 2925 return; 2926 2927 fbcon_cursor(vc, CM_ERASE); 2928 2929 offset = disp->yscroll - scrollback_current; 2930 limit = disp->vrows; 2931 switch (disp->scrollmode) { 2932 case SCROLL_WRAP_MOVE: 2933 info->var.vmode |= FB_VMODE_YWRAP; 2934 break; 2935 case SCROLL_PAN_MOVE: 2936 case SCROLL_PAN_REDRAW: 2937 limit -= vc->vc_rows; 2938 info->var.vmode &= ~FB_VMODE_YWRAP; 2939 break; 2940 } 2941 if (offset < 0) 2942 offset += limit; 2943 else if (offset >= limit) 2944 offset -= limit; 2945 2946 ops->var.xoffset = 0; 2947 ops->var.yoffset = offset * vc->vc_font.height; 2948 ops->update_start(info); 2949 2950 if (!scrollback_current) 2951 fbcon_cursor(vc, CM_DRAW); 2952 } 2953 2954 static int fbcon_set_origin(struct vc_data *vc) 2955 { 2956 if (softback_lines) 2957 fbcon_scrolldelta(vc, softback_lines); 2958 return 0; 2959 } 2960 2961 void fbcon_suspended(struct fb_info *info) 2962 { 2963 struct vc_data *vc = NULL; 2964 struct fbcon_ops *ops = info->fbcon_par; 2965 2966 if (!ops || ops->currcon < 0) 2967 return; 2968 vc = vc_cons[ops->currcon].d; 2969 2970 /* Clear cursor, restore saved data */ 2971 fbcon_cursor(vc, CM_ERASE); 2972 } 2973 2974 void fbcon_resumed(struct fb_info *info) 2975 { 2976 struct vc_data *vc; 2977 struct fbcon_ops *ops = info->fbcon_par; 2978 2979 if (!ops || ops->currcon < 0) 2980 return; 2981 vc = vc_cons[ops->currcon].d; 2982 2983 update_screen(vc); 2984 } 2985 2986 static void fbcon_modechanged(struct fb_info *info) 2987 { 2988 struct fbcon_ops *ops = info->fbcon_par; 2989 struct vc_data *vc; 2990 struct fbcon_display *p; 2991 int rows, cols; 2992 2993 if (!ops || ops->currcon < 0) 2994 return; 2995 vc = vc_cons[ops->currcon].d; 2996 if (vc->vc_mode != KD_TEXT || 2997 registered_fb[con2fb_map[ops->currcon]] != info) 2998 return; 2999 3000 p = &fb_display[vc->vc_num]; 3001 set_blitting_type(vc, info); 3002 3003 if (con_is_visible(vc)) { 3004 var_to_display(p, &info->var, info); 3005 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 3006 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 3007 cols /= vc->vc_font.width; 3008 rows /= vc->vc_font.height; 3009 vc_resize(vc, cols, rows); 3010 updatescrollmode(p, info, vc); 3011 scrollback_max = 0; 3012 scrollback_current = 0; 3013 3014 if (!fbcon_is_inactive(vc, info)) { 3015 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 3016 ops->update_start(info); 3017 } 3018 3019 fbcon_set_palette(vc, color_table); 3020 update_screen(vc); 3021 if (softback_buf) 3022 fbcon_update_softback(vc); 3023 } 3024 } 3025 3026 static void fbcon_set_all_vcs(struct fb_info *info) 3027 { 3028 struct fbcon_ops *ops = info->fbcon_par; 3029 struct vc_data *vc; 3030 struct fbcon_display *p; 3031 int i, rows, cols, fg = -1; 3032 3033 if (!ops || ops->currcon < 0) 3034 return; 3035 3036 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3037 vc = vc_cons[i].d; 3038 if (!vc || vc->vc_mode != KD_TEXT || 3039 registered_fb[con2fb_map[i]] != info) 3040 continue; 3041 3042 if (con_is_visible(vc)) { 3043 fg = i; 3044 continue; 3045 } 3046 3047 p = &fb_display[vc->vc_num]; 3048 set_blitting_type(vc, info); 3049 var_to_display(p, &info->var, info); 3050 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 3051 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 3052 cols /= vc->vc_font.width; 3053 rows /= vc->vc_font.height; 3054 vc_resize(vc, cols, rows); 3055 } 3056 3057 if (fg != -1) 3058 fbcon_modechanged(info); 3059 } 3060 3061 3062 void fbcon_update_vcs(struct fb_info *info, bool all) 3063 { 3064 if (all) 3065 fbcon_set_all_vcs(info); 3066 else 3067 fbcon_modechanged(info); 3068 } 3069 EXPORT_SYMBOL(fbcon_update_vcs); 3070 3071 int fbcon_mode_deleted(struct fb_info *info, 3072 struct fb_videomode *mode) 3073 { 3074 struct fb_info *fb_info; 3075 struct fbcon_display *p; 3076 int i, j, found = 0; 3077 3078 /* before deletion, ensure that mode is not in use */ 3079 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3080 j = con2fb_map[i]; 3081 if (j == -1) 3082 continue; 3083 fb_info = registered_fb[j]; 3084 if (fb_info != info) 3085 continue; 3086 p = &fb_display[i]; 3087 if (!p || !p->mode) 3088 continue; 3089 if (fb_mode_is_equal(p->mode, mode)) { 3090 found = 1; 3091 break; 3092 } 3093 } 3094 return found; 3095 } 3096 3097 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 3098 static void fbcon_unbind(void) 3099 { 3100 int ret; 3101 3102 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 3103 fbcon_is_default); 3104 3105 if (!ret) 3106 fbcon_has_console_bind = 0; 3107 } 3108 #else 3109 static inline void fbcon_unbind(void) {} 3110 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 3111 3112 /* called with console_lock held */ 3113 void fbcon_fb_unbind(struct fb_info *info) 3114 { 3115 int i, new_idx = -1, ret = 0; 3116 int idx = info->node; 3117 3118 WARN_CONSOLE_UNLOCKED(); 3119 3120 if (!fbcon_has_console_bind) 3121 return; 3122 3123 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3124 if (con2fb_map[i] != idx && 3125 con2fb_map[i] != -1) { 3126 new_idx = con2fb_map[i]; 3127 break; 3128 } 3129 } 3130 3131 if (new_idx != -1) { 3132 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3133 if (con2fb_map[i] == idx) 3134 set_con2fb_map(i, new_idx, 0); 3135 } 3136 } else { 3137 struct fb_info *info = registered_fb[idx]; 3138 3139 /* This is sort of like set_con2fb_map, except it maps 3140 * the consoles to no device and then releases the 3141 * oldinfo to free memory and cancel the cursor blink 3142 * timer. I can imagine this just becoming part of 3143 * set_con2fb_map where new_idx is -1 3144 */ 3145 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3146 if (con2fb_map[i] == idx) { 3147 con2fb_map[i] = -1; 3148 if (!search_fb_in_map(idx)) { 3149 ret = con2fb_release_oldinfo(vc_cons[i].d, 3150 info, NULL, i, 3151 idx, 0); 3152 if (ret) { 3153 con2fb_map[i] = idx; 3154 return; 3155 } 3156 } 3157 } 3158 } 3159 fbcon_unbind(); 3160 } 3161 } 3162 3163 /* called with console_lock held */ 3164 void fbcon_fb_unregistered(struct fb_info *info) 3165 { 3166 int i, idx; 3167 3168 WARN_CONSOLE_UNLOCKED(); 3169 3170 if (deferred_takeover) 3171 return; 3172 3173 idx = info->node; 3174 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3175 if (con2fb_map[i] == idx) 3176 con2fb_map[i] = -1; 3177 } 3178 3179 if (idx == info_idx) { 3180 info_idx = -1; 3181 3182 for_each_registered_fb(i) { 3183 info_idx = i; 3184 break; 3185 } 3186 } 3187 3188 if (info_idx != -1) { 3189 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3190 if (con2fb_map[i] == -1) 3191 con2fb_map[i] = info_idx; 3192 } 3193 } 3194 3195 if (primary_device == idx) 3196 primary_device = -1; 3197 3198 if (!num_registered_fb) 3199 do_unregister_con_driver(&fb_con); 3200 } 3201 3202 void fbcon_remap_all(struct fb_info *info) 3203 { 3204 int i, idx = info->node; 3205 3206 console_lock(); 3207 if (deferred_takeover) { 3208 for (i = first_fb_vc; i <= last_fb_vc; i++) 3209 con2fb_map_boot[i] = idx; 3210 fbcon_map_override(); 3211 console_unlock(); 3212 return; 3213 } 3214 3215 for (i = first_fb_vc; i <= last_fb_vc; i++) 3216 set_con2fb_map(i, idx, 0); 3217 3218 if (con_is_bound(&fb_con)) { 3219 printk(KERN_INFO "fbcon: Remapping primary device, " 3220 "fb%i, to tty %i-%i\n", idx, 3221 first_fb_vc + 1, last_fb_vc + 1); 3222 info_idx = idx; 3223 } 3224 console_unlock(); 3225 } 3226 3227 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 3228 static void fbcon_select_primary(struct fb_info *info) 3229 { 3230 if (!map_override && primary_device == -1 && 3231 fb_is_primary_device(info)) { 3232 int i; 3233 3234 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 3235 info->fix.id, info->node); 3236 primary_device = info->node; 3237 3238 for (i = first_fb_vc; i <= last_fb_vc; i++) 3239 con2fb_map_boot[i] = primary_device; 3240 3241 if (con_is_bound(&fb_con)) { 3242 printk(KERN_INFO "fbcon: Remapping primary device, " 3243 "fb%i, to tty %i-%i\n", info->node, 3244 first_fb_vc + 1, last_fb_vc + 1); 3245 info_idx = primary_device; 3246 } 3247 } 3248 3249 } 3250 #else 3251 static inline void fbcon_select_primary(struct fb_info *info) 3252 { 3253 return; 3254 } 3255 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 3256 3257 /* called with console_lock held */ 3258 int fbcon_fb_registered(struct fb_info *info) 3259 { 3260 int ret = 0, i, idx; 3261 3262 WARN_CONSOLE_UNLOCKED(); 3263 3264 idx = info->node; 3265 fbcon_select_primary(info); 3266 3267 if (deferred_takeover) { 3268 pr_info("fbcon: Deferring console take-over\n"); 3269 return 0; 3270 } 3271 3272 if (info_idx == -1) { 3273 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3274 if (con2fb_map_boot[i] == idx) { 3275 info_idx = idx; 3276 break; 3277 } 3278 } 3279 3280 if (info_idx != -1) 3281 ret = do_fbcon_takeover(1); 3282 } else { 3283 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3284 if (con2fb_map_boot[i] == idx) 3285 set_con2fb_map(i, idx, 0); 3286 } 3287 } 3288 3289 return ret; 3290 } 3291 3292 void fbcon_fb_blanked(struct fb_info *info, int blank) 3293 { 3294 struct fbcon_ops *ops = info->fbcon_par; 3295 struct vc_data *vc; 3296 3297 if (!ops || ops->currcon < 0) 3298 return; 3299 3300 vc = vc_cons[ops->currcon].d; 3301 if (vc->vc_mode != KD_TEXT || 3302 registered_fb[con2fb_map[ops->currcon]] != info) 3303 return; 3304 3305 if (con_is_visible(vc)) { 3306 if (blank) 3307 do_blank_screen(0); 3308 else 3309 do_unblank_screen(0); 3310 } 3311 ops->blank_state = blank; 3312 } 3313 3314 void fbcon_new_modelist(struct fb_info *info) 3315 { 3316 int i; 3317 struct vc_data *vc; 3318 struct fb_var_screeninfo var; 3319 const struct fb_videomode *mode; 3320 3321 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3322 if (registered_fb[con2fb_map[i]] != info) 3323 continue; 3324 if (!fb_display[i].mode) 3325 continue; 3326 vc = vc_cons[i].d; 3327 display_to_var(&var, &fb_display[i]); 3328 mode = fb_find_nearest_mode(fb_display[i].mode, 3329 &info->modelist); 3330 fb_videomode_to_var(&var, mode); 3331 fbcon_set_disp(info, &var, vc->vc_num); 3332 } 3333 } 3334 3335 void fbcon_get_requirement(struct fb_info *info, 3336 struct fb_blit_caps *caps) 3337 { 3338 struct vc_data *vc; 3339 struct fbcon_display *p; 3340 3341 if (caps->flags) { 3342 int i, charcnt; 3343 3344 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3345 vc = vc_cons[i].d; 3346 if (vc && vc->vc_mode == KD_TEXT && 3347 info->node == con2fb_map[i]) { 3348 p = &fb_display[i]; 3349 caps->x |= 1 << (vc->vc_font.width - 1); 3350 caps->y |= 1 << (vc->vc_font.height - 1); 3351 charcnt = (p->userfont) ? 3352 FNTCHARCNT(p->fontdata) : 256; 3353 if (caps->len < charcnt) 3354 caps->len = charcnt; 3355 } 3356 } 3357 } else { 3358 vc = vc_cons[fg_console].d; 3359 3360 if (vc && vc->vc_mode == KD_TEXT && 3361 info->node == con2fb_map[fg_console]) { 3362 p = &fb_display[fg_console]; 3363 caps->x = 1 << (vc->vc_font.width - 1); 3364 caps->y = 1 << (vc->vc_font.height - 1); 3365 caps->len = (p->userfont) ? 3366 FNTCHARCNT(p->fontdata) : 256; 3367 } 3368 } 3369 } 3370 3371 int fbcon_set_con2fb_map_ioctl(void __user *argp) 3372 { 3373 struct fb_con2fbmap con2fb; 3374 int ret; 3375 3376 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3377 return -EFAULT; 3378 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3379 return -EINVAL; 3380 if (con2fb.framebuffer >= FB_MAX) 3381 return -EINVAL; 3382 if (!registered_fb[con2fb.framebuffer]) 3383 request_module("fb%d", con2fb.framebuffer); 3384 if (!registered_fb[con2fb.framebuffer]) { 3385 return -EINVAL; 3386 } 3387 3388 console_lock(); 3389 ret = set_con2fb_map(con2fb.console - 1, 3390 con2fb.framebuffer, 1); 3391 console_unlock(); 3392 3393 return ret; 3394 } 3395 3396 int fbcon_get_con2fb_map_ioctl(void __user *argp) 3397 { 3398 struct fb_con2fbmap con2fb; 3399 3400 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) 3401 return -EFAULT; 3402 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) 3403 return -EINVAL; 3404 3405 console_lock(); 3406 con2fb.framebuffer = con2fb_map[con2fb.console - 1]; 3407 console_unlock(); 3408 3409 return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; 3410 } 3411 3412 /* 3413 * The console `switch' structure for the frame buffer based console 3414 */ 3415 3416 static const struct consw fb_con = { 3417 .owner = THIS_MODULE, 3418 .con_startup = fbcon_startup, 3419 .con_init = fbcon_init, 3420 .con_deinit = fbcon_deinit, 3421 .con_clear = fbcon_clear, 3422 .con_putc = fbcon_putc, 3423 .con_putcs = fbcon_putcs, 3424 .con_cursor = fbcon_cursor, 3425 .con_scroll = fbcon_scroll, 3426 .con_switch = fbcon_switch, 3427 .con_blank = fbcon_blank, 3428 .con_font_set = fbcon_set_font, 3429 .con_font_get = fbcon_get_font, 3430 .con_font_default = fbcon_set_def_font, 3431 .con_font_copy = fbcon_copy_font, 3432 .con_set_palette = fbcon_set_palette, 3433 .con_scrolldelta = fbcon_scrolldelta, 3434 .con_set_origin = fbcon_set_origin, 3435 .con_invert_region = fbcon_invert_region, 3436 .con_screen_pos = fbcon_screen_pos, 3437 .con_getxy = fbcon_getxy, 3438 .con_resize = fbcon_resize, 3439 .con_debug_enter = fbcon_debug_enter, 3440 .con_debug_leave = fbcon_debug_leave, 3441 }; 3442 3443 static ssize_t store_rotate(struct device *device, 3444 struct device_attribute *attr, const char *buf, 3445 size_t count) 3446 { 3447 struct fb_info *info; 3448 int rotate, idx; 3449 char **last = NULL; 3450 3451 console_lock(); 3452 idx = con2fb_map[fg_console]; 3453 3454 if (idx == -1 || registered_fb[idx] == NULL) 3455 goto err; 3456 3457 info = registered_fb[idx]; 3458 rotate = simple_strtoul(buf, last, 0); 3459 fbcon_rotate(info, rotate); 3460 err: 3461 console_unlock(); 3462 return count; 3463 } 3464 3465 static ssize_t store_rotate_all(struct device *device, 3466 struct device_attribute *attr,const char *buf, 3467 size_t count) 3468 { 3469 struct fb_info *info; 3470 int rotate, idx; 3471 char **last = NULL; 3472 3473 console_lock(); 3474 idx = con2fb_map[fg_console]; 3475 3476 if (idx == -1 || registered_fb[idx] == NULL) 3477 goto err; 3478 3479 info = registered_fb[idx]; 3480 rotate = simple_strtoul(buf, last, 0); 3481 fbcon_rotate_all(info, rotate); 3482 err: 3483 console_unlock(); 3484 return count; 3485 } 3486 3487 static ssize_t show_rotate(struct device *device, 3488 struct device_attribute *attr,char *buf) 3489 { 3490 struct fb_info *info; 3491 int rotate = 0, idx; 3492 3493 console_lock(); 3494 idx = con2fb_map[fg_console]; 3495 3496 if (idx == -1 || registered_fb[idx] == NULL) 3497 goto err; 3498 3499 info = registered_fb[idx]; 3500 rotate = fbcon_get_rotate(info); 3501 err: 3502 console_unlock(); 3503 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3504 } 3505 3506 static ssize_t show_cursor_blink(struct device *device, 3507 struct device_attribute *attr, char *buf) 3508 { 3509 struct fb_info *info; 3510 struct fbcon_ops *ops; 3511 int idx, blink = -1; 3512 3513 console_lock(); 3514 idx = con2fb_map[fg_console]; 3515 3516 if (idx == -1 || registered_fb[idx] == NULL) 3517 goto err; 3518 3519 info = registered_fb[idx]; 3520 ops = info->fbcon_par; 3521 3522 if (!ops) 3523 goto err; 3524 3525 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3526 err: 3527 console_unlock(); 3528 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3529 } 3530 3531 static ssize_t store_cursor_blink(struct device *device, 3532 struct device_attribute *attr, 3533 const char *buf, size_t count) 3534 { 3535 struct fb_info *info; 3536 int blink, idx; 3537 char **last = NULL; 3538 3539 console_lock(); 3540 idx = con2fb_map[fg_console]; 3541 3542 if (idx == -1 || registered_fb[idx] == NULL) 3543 goto err; 3544 3545 info = registered_fb[idx]; 3546 3547 if (!info->fbcon_par) 3548 goto err; 3549 3550 blink = simple_strtoul(buf, last, 0); 3551 3552 if (blink) { 3553 fbcon_cursor_noblink = 0; 3554 fbcon_add_cursor_timer(info); 3555 } else { 3556 fbcon_cursor_noblink = 1; 3557 fbcon_del_cursor_timer(info); 3558 } 3559 3560 err: 3561 console_unlock(); 3562 return count; 3563 } 3564 3565 static struct device_attribute device_attrs[] = { 3566 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3567 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3568 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3569 store_cursor_blink), 3570 }; 3571 3572 static int fbcon_init_device(void) 3573 { 3574 int i, error = 0; 3575 3576 fbcon_has_sysfs = 1; 3577 3578 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3579 error = device_create_file(fbcon_device, &device_attrs[i]); 3580 3581 if (error) 3582 break; 3583 } 3584 3585 if (error) { 3586 while (--i >= 0) 3587 device_remove_file(fbcon_device, &device_attrs[i]); 3588 3589 fbcon_has_sysfs = 0; 3590 } 3591 3592 return 0; 3593 } 3594 3595 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3596 static void fbcon_register_existing_fbs(struct work_struct *work) 3597 { 3598 int i; 3599 3600 console_lock(); 3601 3602 for_each_registered_fb(i) 3603 fbcon_fb_registered(registered_fb[i]); 3604 3605 console_unlock(); 3606 } 3607 3608 static struct notifier_block fbcon_output_nb; 3609 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); 3610 3611 static int fbcon_output_notifier(struct notifier_block *nb, 3612 unsigned long action, void *data) 3613 { 3614 WARN_CONSOLE_UNLOCKED(); 3615 3616 pr_info("fbcon: Taking over console\n"); 3617 3618 dummycon_unregister_output_notifier(&fbcon_output_nb); 3619 deferred_takeover = false; 3620 logo_shown = FBCON_LOGO_DONTSHOW; 3621 3622 /* We may get called in atomic context */ 3623 schedule_work(&fbcon_deferred_takeover_work); 3624 3625 return NOTIFY_OK; 3626 } 3627 #endif 3628 3629 static void fbcon_start(void) 3630 { 3631 WARN_CONSOLE_UNLOCKED(); 3632 3633 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3634 if (conswitchp != &dummy_con) 3635 deferred_takeover = false; 3636 3637 if (deferred_takeover) { 3638 fbcon_output_nb.notifier_call = fbcon_output_notifier; 3639 dummycon_register_output_notifier(&fbcon_output_nb); 3640 return; 3641 } 3642 #endif 3643 3644 if (num_registered_fb) { 3645 int i; 3646 3647 for_each_registered_fb(i) { 3648 info_idx = i; 3649 break; 3650 } 3651 3652 do_fbcon_takeover(0); 3653 } 3654 } 3655 3656 static void fbcon_exit(void) 3657 { 3658 struct fb_info *info; 3659 int i, j, mapped; 3660 3661 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 3662 if (deferred_takeover) { 3663 dummycon_unregister_output_notifier(&fbcon_output_nb); 3664 deferred_takeover = false; 3665 } 3666 #endif 3667 3668 kvfree((void *)softback_buf); 3669 softback_buf = 0UL; 3670 3671 for_each_registered_fb(i) { 3672 int pending = 0; 3673 3674 mapped = 0; 3675 info = registered_fb[i]; 3676 3677 if (info->queue.func) 3678 pending = cancel_work_sync(&info->queue); 3679 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3680 "no")); 3681 3682 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3683 if (con2fb_map[j] == i) { 3684 mapped = 1; 3685 con2fb_map[j] = -1; 3686 } 3687 } 3688 3689 if (mapped) { 3690 if (info->fbops->fb_release) 3691 info->fbops->fb_release(info, 0); 3692 module_put(info->fbops->owner); 3693 3694 if (info->fbcon_par) { 3695 struct fbcon_ops *ops = info->fbcon_par; 3696 3697 fbcon_del_cursor_timer(info); 3698 kfree(ops->cursor_src); 3699 kfree(ops->cursor_state.mask); 3700 kfree(info->fbcon_par); 3701 info->fbcon_par = NULL; 3702 } 3703 3704 if (info->queue.func == fb_flashcursor) 3705 info->queue.func = NULL; 3706 } 3707 } 3708 } 3709 3710 void __init fb_console_init(void) 3711 { 3712 int i; 3713 3714 console_lock(); 3715 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3716 "fbcon"); 3717 3718 if (IS_ERR(fbcon_device)) { 3719 printk(KERN_WARNING "Unable to create device " 3720 "for fbcon; errno = %ld\n", 3721 PTR_ERR(fbcon_device)); 3722 fbcon_device = NULL; 3723 } else 3724 fbcon_init_device(); 3725 3726 for (i = 0; i < MAX_NR_CONSOLES; i++) 3727 con2fb_map[i] = -1; 3728 3729 fbcon_start(); 3730 console_unlock(); 3731 } 3732 3733 #ifdef MODULE 3734 3735 static void __exit fbcon_deinit_device(void) 3736 { 3737 int i; 3738 3739 if (fbcon_has_sysfs) { 3740 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3741 device_remove_file(fbcon_device, &device_attrs[i]); 3742 3743 fbcon_has_sysfs = 0; 3744 } 3745 } 3746 3747 void __exit fb_console_exit(void) 3748 { 3749 console_lock(); 3750 fbcon_deinit_device(); 3751 device_destroy(fb_class, MKDEV(0, 0)); 3752 fbcon_exit(); 3753 do_unregister_con_driver(&fb_con); 3754 console_unlock(); 3755 } 3756 #endif 3757