1 /* 2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver 3 * 4 * Copyright (C) 1995 Geert Uytterhoeven 5 * 6 * 7 * This file is based on the original Amiga console driver (amicon.c): 8 * 9 * Copyright (C) 1993 Hamish Macdonald 10 * Greg Harp 11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk] 12 * 13 * with work by William Rucklidge (wjr@cs.cornell.edu) 14 * Geert Uytterhoeven 15 * Jes Sorensen (jds@kom.auc.dk) 16 * Martin Apel 17 * 18 * and on the original Atari console driver (atacon.c): 19 * 20 * Copyright (C) 1993 Bjoern Brauel 21 * Roman Hodek 22 * 23 * with work by Guenther Kelleter 24 * Martin Schaller 25 * Andreas Schwab 26 * 27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org) 28 * Smart redraw scrolling, arbitrary font width support, 512char font support 29 * and software scrollback added by 30 * Jakub Jelinek (jj@ultra.linux.cz) 31 * 32 * Random hacking by Martin Mares <mj@ucw.cz> 33 * 34 * 2001 - Documented with DocBook 35 * - Brad Douglas <brad@neruo.com> 36 * 37 * The low level operations for the various display memory organizations are 38 * now in separate source files. 39 * 40 * Currently the following organizations are supported: 41 * 42 * o afb Amiga bitplanes 43 * o cfb{2,4,8,16,24,32} Packed pixels 44 * o ilbm Amiga interleaved bitplanes 45 * o iplan2p[248] Atari interleaved bitplanes 46 * o mfb Monochrome 47 * o vga VGA characters/attributes 48 * 49 * To do: 50 * 51 * - Implement 16 plane mode (iplan2p16) 52 * 53 * 54 * This file is subject to the terms and conditions of the GNU General Public 55 * License. See the file COPYING in the main directory of this archive for 56 * more details. 57 */ 58 59 #undef FBCONDEBUG 60 61 #include <linux/module.h> 62 #include <linux/types.h> 63 #include <linux/fs.h> 64 #include <linux/kernel.h> 65 #include <linux/delay.h> /* MSch: for IRQ probe */ 66 #include <linux/console.h> 67 #include <linux/string.h> 68 #include <linux/kd.h> 69 #include <linux/slab.h> 70 #include <linux/fb.h> 71 #include <linux/fbcon.h> 72 #include <linux/vt_kern.h> 73 #include <linux/selection.h> 74 #include <linux/font.h> 75 #include <linux/smp.h> 76 #include <linux/init.h> 77 #include <linux/interrupt.h> 78 #include <linux/crc32.h> /* For counting font checksums */ 79 #include <asm/fb.h> 80 #include <asm/irq.h> 81 82 #include "fbcon.h" 83 84 #ifdef FBCONDEBUG 85 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args) 86 #else 87 # define DPRINTK(fmt, args...) 88 #endif 89 90 enum { 91 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */ 92 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */ 93 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */ 94 }; 95 96 static struct display fb_display[MAX_NR_CONSOLES]; 97 98 static signed char con2fb_map[MAX_NR_CONSOLES]; 99 static signed char con2fb_map_boot[MAX_NR_CONSOLES]; 100 101 static int logo_lines; 102 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO 103 enums. */ 104 static int logo_shown = FBCON_LOGO_CANSHOW; 105 /* Software scrollback */ 106 static int fbcon_softback_size = 32768; 107 static unsigned long softback_buf, softback_curr; 108 static unsigned long softback_in; 109 static unsigned long softback_top, softback_end; 110 static int softback_lines; 111 /* console mappings */ 112 static int first_fb_vc; 113 static int last_fb_vc = MAX_NR_CONSOLES - 1; 114 static int fbcon_is_default = 1; 115 static int fbcon_has_exited; 116 static int primary_device = -1; 117 static int fbcon_has_console_bind; 118 119 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 120 static int map_override; 121 122 static inline void fbcon_map_override(void) 123 { 124 map_override = 1; 125 } 126 #else 127 static inline void fbcon_map_override(void) 128 { 129 } 130 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */ 131 132 /* font data */ 133 static char fontname[40]; 134 135 /* current fb_info */ 136 static int info_idx = -1; 137 138 /* console rotation */ 139 static int initial_rotation = -1; 140 static int fbcon_has_sysfs; 141 static int margin_color; 142 143 static const struct consw fb_con; 144 145 #define CM_SOFTBACK (8) 146 147 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) 148 149 static int fbcon_set_origin(struct vc_data *); 150 151 static int fbcon_cursor_noblink; 152 153 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) 154 155 /* 156 * Interface used by the world 157 */ 158 159 static const char *fbcon_startup(void); 160 static void fbcon_init(struct vc_data *vc, int init); 161 static void fbcon_deinit(struct vc_data *vc); 162 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 163 int width); 164 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); 165 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 166 int count, int ypos, int xpos); 167 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); 168 static void fbcon_cursor(struct vc_data *vc, int mode); 169 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 170 int height, int width); 171 static int fbcon_switch(struct vc_data *vc); 172 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); 173 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table); 174 175 /* 176 * Internal routines 177 */ 178 static __inline__ void ywrap_up(struct vc_data *vc, int count); 179 static __inline__ void ywrap_down(struct vc_data *vc, int count); 180 static __inline__ void ypan_up(struct vc_data *vc, int count); 181 static __inline__ void ypan_down(struct vc_data *vc, int count); 182 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, 183 int dy, int dx, int height, int width, u_int y_break); 184 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 185 int unit); 186 static void fbcon_redraw_move(struct vc_data *vc, struct display *p, 187 int line, int count, int dy); 188 static void fbcon_modechanged(struct fb_info *info); 189 static void fbcon_set_all_vcs(struct fb_info *info); 190 static void fbcon_start(void); 191 static void fbcon_exit(void); 192 static struct device *fbcon_device; 193 194 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION 195 static inline void fbcon_set_rotation(struct fb_info *info) 196 { 197 struct fbcon_ops *ops = info->fbcon_par; 198 199 if (!(info->flags & FBINFO_MISC_TILEBLITTING) && 200 ops->p->con_rotate < 4) 201 ops->rotate = ops->p->con_rotate; 202 else 203 ops->rotate = 0; 204 } 205 206 static void fbcon_rotate(struct fb_info *info, u32 rotate) 207 { 208 struct fbcon_ops *ops= info->fbcon_par; 209 struct fb_info *fb_info; 210 211 if (!ops || ops->currcon == -1) 212 return; 213 214 fb_info = registered_fb[con2fb_map[ops->currcon]]; 215 216 if (info == fb_info) { 217 struct display *p = &fb_display[ops->currcon]; 218 219 if (rotate < 4) 220 p->con_rotate = rotate; 221 else 222 p->con_rotate = 0; 223 224 fbcon_modechanged(info); 225 } 226 } 227 228 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 229 { 230 struct fbcon_ops *ops = info->fbcon_par; 231 struct vc_data *vc; 232 struct display *p; 233 int i; 234 235 if (!ops || ops->currcon < 0 || rotate > 3) 236 return; 237 238 for (i = first_fb_vc; i <= last_fb_vc; i++) { 239 vc = vc_cons[i].d; 240 if (!vc || vc->vc_mode != KD_TEXT || 241 registered_fb[con2fb_map[i]] != info) 242 continue; 243 244 p = &fb_display[vc->vc_num]; 245 p->con_rotate = rotate; 246 } 247 248 fbcon_set_all_vcs(info); 249 } 250 #else 251 static inline void fbcon_set_rotation(struct fb_info *info) 252 { 253 struct fbcon_ops *ops = info->fbcon_par; 254 255 ops->rotate = FB_ROTATE_UR; 256 } 257 258 static void fbcon_rotate(struct fb_info *info, u32 rotate) 259 { 260 return; 261 } 262 263 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 264 { 265 return; 266 } 267 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ 268 269 static int fbcon_get_rotate(struct fb_info *info) 270 { 271 struct fbcon_ops *ops = info->fbcon_par; 272 273 return (ops) ? ops->rotate : 0; 274 } 275 276 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) 277 { 278 struct fbcon_ops *ops = info->fbcon_par; 279 280 return (info->state != FBINFO_STATE_RUNNING || 281 vc->vc_mode != KD_TEXT || ops->graphics) && 282 !vt_force_oops_output(vc); 283 } 284 285 static int get_color(struct vc_data *vc, struct fb_info *info, 286 u16 c, int is_fg) 287 { 288 int depth = fb_get_color_depth(&info->var, &info->fix); 289 int color = 0; 290 291 if (console_blanked) { 292 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; 293 294 c = vc->vc_video_erase_char & charmask; 295 } 296 297 if (depth != 1) 298 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) 299 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); 300 301 switch (depth) { 302 case 1: 303 { 304 int col = mono_col(info); 305 /* 0 or 1 */ 306 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; 307 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; 308 309 if (console_blanked) 310 fg = bg; 311 312 color = (is_fg) ? fg : bg; 313 break; 314 } 315 case 2: 316 /* 317 * Scale down 16-colors to 4 colors. Default 4-color palette 318 * is grayscale. However, simply dividing the values by 4 319 * will not work, as colors 1, 2 and 3 will be scaled-down 320 * to zero rendering them invisible. So empirically convert 321 * colors to a sane 4-level grayscale. 322 */ 323 switch (color) { 324 case 0: 325 color = 0; /* black */ 326 break; 327 case 1 ... 6: 328 color = 2; /* white */ 329 break; 330 case 7 ... 8: 331 color = 1; /* gray */ 332 break; 333 default: 334 color = 3; /* intense white */ 335 break; 336 } 337 break; 338 case 3: 339 /* 340 * Last 8 entries of default 16-color palette is a more intense 341 * version of the first 8 (i.e., same chrominance, different 342 * luminance). 343 */ 344 color &= 7; 345 break; 346 } 347 348 349 return color; 350 } 351 352 static void fbcon_update_softback(struct vc_data *vc) 353 { 354 int l = fbcon_softback_size / vc->vc_size_row; 355 356 if (l > 5) 357 softback_end = softback_buf + l * vc->vc_size_row; 358 else 359 /* Smaller scrollback makes no sense, and 0 would screw 360 the operation totally */ 361 softback_top = 0; 362 } 363 364 static void fb_flashcursor(struct work_struct *work) 365 { 366 struct fb_info *info = container_of(work, struct fb_info, queue); 367 struct fbcon_ops *ops = info->fbcon_par; 368 struct vc_data *vc = NULL; 369 int c; 370 int mode; 371 int ret; 372 373 /* FIXME: we should sort out the unbind locking instead */ 374 /* instead we just fail to flash the cursor if we can't get 375 * the lock instead of blocking fbcon deinit */ 376 ret = console_trylock(); 377 if (ret == 0) 378 return; 379 380 if (ops && ops->currcon != -1) 381 vc = vc_cons[ops->currcon].d; 382 383 if (!vc || !con_is_visible(vc) || 384 registered_fb[con2fb_map[vc->vc_num]] != info || 385 vc->vc_deccm != 1) { 386 console_unlock(); 387 return; 388 } 389 390 c = scr_readw((u16 *) vc->vc_pos); 391 mode = (!ops->cursor_flash || ops->cursor_state.enable) ? 392 CM_ERASE : CM_DRAW; 393 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1), 394 get_color(vc, info, c, 0)); 395 console_unlock(); 396 } 397 398 static void cursor_timer_handler(struct timer_list *t) 399 { 400 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer); 401 struct fb_info *info = ops->info; 402 403 queue_work(system_power_efficient_wq, &info->queue); 404 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 405 } 406 407 static void fbcon_add_cursor_timer(struct fb_info *info) 408 { 409 struct fbcon_ops *ops = info->fbcon_par; 410 411 if ((!info->queue.func || info->queue.func == fb_flashcursor) && 412 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) && 413 !fbcon_cursor_noblink) { 414 if (!info->queue.func) 415 INIT_WORK(&info->queue, fb_flashcursor); 416 417 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0); 418 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 419 ops->flags |= FBCON_FLAGS_CURSOR_TIMER; 420 } 421 } 422 423 static void fbcon_del_cursor_timer(struct fb_info *info) 424 { 425 struct fbcon_ops *ops = info->fbcon_par; 426 427 if (info->queue.func == fb_flashcursor && 428 ops->flags & FBCON_FLAGS_CURSOR_TIMER) { 429 del_timer_sync(&ops->cursor_timer); 430 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; 431 } 432 } 433 434 #ifndef MODULE 435 static int __init fb_console_setup(char *this_opt) 436 { 437 char *options; 438 int i, j; 439 440 if (!this_opt || !*this_opt) 441 return 1; 442 443 while ((options = strsep(&this_opt, ",")) != NULL) { 444 if (!strncmp(options, "font:", 5)) { 445 strlcpy(fontname, options + 5, sizeof(fontname)); 446 continue; 447 } 448 449 if (!strncmp(options, "scrollback:", 11)) { 450 options += 11; 451 if (*options) { 452 fbcon_softback_size = simple_strtoul(options, &options, 0); 453 if (*options == 'k' || *options == 'K') { 454 fbcon_softback_size *= 1024; 455 } 456 } 457 continue; 458 } 459 460 if (!strncmp(options, "map:", 4)) { 461 options += 4; 462 if (*options) { 463 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { 464 if (!options[j]) 465 j = 0; 466 con2fb_map_boot[i] = 467 (options[j++]-'0') % FB_MAX; 468 } 469 470 fbcon_map_override(); 471 } 472 continue; 473 } 474 475 if (!strncmp(options, "vc:", 3)) { 476 options += 3; 477 if (*options) 478 first_fb_vc = simple_strtoul(options, &options, 10) - 1; 479 if (first_fb_vc < 0) 480 first_fb_vc = 0; 481 if (*options++ == '-') 482 last_fb_vc = simple_strtoul(options, &options, 10) - 1; 483 fbcon_is_default = 0; 484 continue; 485 } 486 487 if (!strncmp(options, "rotate:", 7)) { 488 options += 7; 489 if (*options) 490 initial_rotation = simple_strtoul(options, &options, 0); 491 if (initial_rotation > 3) 492 initial_rotation = 0; 493 continue; 494 } 495 496 if (!strncmp(options, "margin:", 7)) { 497 options += 7; 498 if (*options) 499 margin_color = simple_strtoul(options, &options, 0); 500 continue; 501 } 502 } 503 return 1; 504 } 505 506 __setup("fbcon=", fb_console_setup); 507 #endif 508 509 static int search_fb_in_map(int idx) 510 { 511 int i, retval = 0; 512 513 for (i = first_fb_vc; i <= last_fb_vc; i++) { 514 if (con2fb_map[i] == idx) 515 retval = 1; 516 } 517 return retval; 518 } 519 520 static int search_for_mapped_con(void) 521 { 522 int i, retval = 0; 523 524 for (i = first_fb_vc; i <= last_fb_vc; i++) { 525 if (con2fb_map[i] != -1) 526 retval = 1; 527 } 528 return retval; 529 } 530 531 static int do_fbcon_takeover(int show_logo) 532 { 533 int err, i; 534 535 if (!num_registered_fb) 536 return -ENODEV; 537 538 if (!show_logo) 539 logo_shown = FBCON_LOGO_DONTSHOW; 540 541 for (i = first_fb_vc; i <= last_fb_vc; i++) 542 con2fb_map[i] = info_idx; 543 544 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, 545 fbcon_is_default); 546 547 if (err) { 548 for (i = first_fb_vc; i <= last_fb_vc; i++) 549 con2fb_map[i] = -1; 550 info_idx = -1; 551 } else { 552 fbcon_has_console_bind = 1; 553 } 554 555 return err; 556 } 557 558 #ifdef MODULE 559 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 560 int cols, int rows, int new_cols, int new_rows) 561 { 562 logo_shown = FBCON_LOGO_DONTSHOW; 563 } 564 #else 565 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 566 int cols, int rows, int new_cols, int new_rows) 567 { 568 /* Need to make room for the logo */ 569 struct fbcon_ops *ops = info->fbcon_par; 570 int cnt, erase = vc->vc_video_erase_char, step; 571 unsigned short *save = NULL, *r, *q; 572 int logo_height; 573 574 if (info->fbops->owner) { 575 logo_shown = FBCON_LOGO_DONTSHOW; 576 return; 577 } 578 579 /* 580 * remove underline attribute from erase character 581 * if black and white framebuffer. 582 */ 583 if (fb_get_color_depth(&info->var, &info->fix) == 1) 584 erase &= ~0x400; 585 logo_height = fb_prepare_logo(info, ops->rotate); 586 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); 587 q = (unsigned short *) (vc->vc_origin + 588 vc->vc_size_row * rows); 589 step = logo_lines * cols; 590 for (r = q - logo_lines * cols; r < q; r++) 591 if (scr_readw(r) != vc->vc_video_erase_char) 592 break; 593 if (r != q && new_rows >= rows + logo_lines) { 594 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL); 595 if (save) { 596 int i = cols < new_cols ? cols : new_cols; 597 scr_memsetw(save, erase, logo_lines * new_cols * 2); 598 r = q - step; 599 for (cnt = 0; cnt < logo_lines; cnt++, r += i) 600 scr_memcpyw(save + cnt * new_cols, r, 2 * i); 601 r = q; 602 } 603 } 604 if (r == q) { 605 /* We can scroll screen down */ 606 r = q - step - cols; 607 for (cnt = rows - logo_lines; cnt > 0; cnt--) { 608 scr_memcpyw(r + step, r, vc->vc_size_row); 609 r -= cols; 610 } 611 if (!save) { 612 int lines; 613 if (vc->vc_y + logo_lines >= rows) 614 lines = rows - vc->vc_y - 1; 615 else 616 lines = logo_lines; 617 vc->vc_y += lines; 618 vc->vc_pos += lines * vc->vc_size_row; 619 } 620 } 621 scr_memsetw((unsigned short *) vc->vc_origin, 622 erase, 623 vc->vc_size_row * logo_lines); 624 625 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 626 fbcon_clear_margins(vc, 0); 627 update_screen(vc); 628 } 629 630 if (save) { 631 q = (unsigned short *) (vc->vc_origin + 632 vc->vc_size_row * 633 rows); 634 scr_memcpyw(q, save, logo_lines * new_cols * 2); 635 vc->vc_y += logo_lines; 636 vc->vc_pos += logo_lines * vc->vc_size_row; 637 kfree(save); 638 } 639 640 if (logo_lines > vc->vc_bottom) { 641 logo_shown = FBCON_LOGO_CANSHOW; 642 printk(KERN_INFO 643 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 644 } else if (logo_shown != FBCON_LOGO_DONTSHOW) { 645 logo_shown = FBCON_LOGO_DRAW; 646 vc->vc_top = logo_lines; 647 } 648 } 649 #endif /* MODULE */ 650 651 #ifdef CONFIG_FB_TILEBLITTING 652 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 653 { 654 struct fbcon_ops *ops = info->fbcon_par; 655 656 ops->p = &fb_display[vc->vc_num]; 657 658 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 659 fbcon_set_tileops(vc, info); 660 else { 661 fbcon_set_rotation(info); 662 fbcon_set_bitops(ops); 663 } 664 } 665 666 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 667 { 668 int err = 0; 669 670 if (info->flags & FBINFO_MISC_TILEBLITTING && 671 info->tileops->fb_get_tilemax(info) < charcount) 672 err = 1; 673 674 return err; 675 } 676 #else 677 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 678 { 679 struct fbcon_ops *ops = info->fbcon_par; 680 681 info->flags &= ~FBINFO_MISC_TILEBLITTING; 682 ops->p = &fb_display[vc->vc_num]; 683 fbcon_set_rotation(info); 684 fbcon_set_bitops(ops); 685 } 686 687 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 688 { 689 return 0; 690 } 691 692 #endif /* CONFIG_MISC_TILEBLITTING */ 693 694 695 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 696 int unit, int oldidx) 697 { 698 struct fbcon_ops *ops = NULL; 699 int err = 0; 700 701 if (!try_module_get(info->fbops->owner)) 702 err = -ENODEV; 703 704 if (!err && info->fbops->fb_open && 705 info->fbops->fb_open(info, 0)) 706 err = -ENODEV; 707 708 if (!err) { 709 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 710 if (!ops) 711 err = -ENOMEM; 712 } 713 714 if (!err) { 715 ops->cur_blink_jiffies = HZ / 5; 716 ops->info = info; 717 info->fbcon_par = ops; 718 719 if (vc) 720 set_blitting_type(vc, info); 721 } 722 723 if (err) { 724 con2fb_map[unit] = oldidx; 725 module_put(info->fbops->owner); 726 } 727 728 return err; 729 } 730 731 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 732 struct fb_info *newinfo, int unit, 733 int oldidx, int found) 734 { 735 struct fbcon_ops *ops = oldinfo->fbcon_par; 736 int err = 0, ret; 737 738 if (oldinfo->fbops->fb_release && 739 oldinfo->fbops->fb_release(oldinfo, 0)) { 740 con2fb_map[unit] = oldidx; 741 if (!found && newinfo->fbops->fb_release) 742 newinfo->fbops->fb_release(newinfo, 0); 743 if (!found) 744 module_put(newinfo->fbops->owner); 745 err = -ENODEV; 746 } 747 748 if (!err) { 749 fbcon_del_cursor_timer(oldinfo); 750 kfree(ops->cursor_state.mask); 751 kfree(ops->cursor_data); 752 kfree(ops->cursor_src); 753 kfree(ops->fontbuffer); 754 kfree(oldinfo->fbcon_par); 755 oldinfo->fbcon_par = NULL; 756 module_put(oldinfo->fbops->owner); 757 /* 758 If oldinfo and newinfo are driving the same hardware, 759 the fb_release() method of oldinfo may attempt to 760 restore the hardware state. This will leave the 761 newinfo in an undefined state. Thus, a call to 762 fb_set_par() may be needed for the newinfo. 763 */ 764 if (newinfo && newinfo->fbops->fb_set_par) { 765 ret = newinfo->fbops->fb_set_par(newinfo); 766 767 if (ret) 768 printk(KERN_ERR "con2fb_release_oldinfo: " 769 "detected unhandled fb_set_par error, " 770 "error code %d\n", ret); 771 } 772 } 773 774 return err; 775 } 776 777 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 778 int unit, int show_logo) 779 { 780 struct fbcon_ops *ops = info->fbcon_par; 781 int ret; 782 783 ops->currcon = fg_console; 784 785 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 786 ret = info->fbops->fb_set_par(info); 787 788 if (ret) 789 printk(KERN_ERR "con2fb_init_display: detected " 790 "unhandled fb_set_par error, " 791 "error code %d\n", ret); 792 } 793 794 ops->flags |= FBCON_FLAGS_INIT; 795 ops->graphics = 0; 796 fbcon_set_disp(info, &info->var, unit); 797 798 if (show_logo) { 799 struct vc_data *fg_vc = vc_cons[fg_console].d; 800 struct fb_info *fg_info = 801 registered_fb[con2fb_map[fg_console]]; 802 803 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 804 fg_vc->vc_rows, fg_vc->vc_cols, 805 fg_vc->vc_rows); 806 } 807 808 update_screen(vc_cons[fg_console].d); 809 } 810 811 /** 812 * set_con2fb_map - map console to frame buffer device 813 * @unit: virtual console number to map 814 * @newidx: frame buffer index to map virtual console to 815 * @user: user request 816 * 817 * Maps a virtual console @unit to a frame buffer device 818 * @newidx. 819 * 820 * This should be called with the console lock held. 821 */ 822 static int set_con2fb_map(int unit, int newidx, int user) 823 { 824 struct vc_data *vc = vc_cons[unit].d; 825 int oldidx = con2fb_map[unit]; 826 struct fb_info *info = registered_fb[newidx]; 827 struct fb_info *oldinfo = NULL; 828 int found, err = 0; 829 830 if (oldidx == newidx) 831 return 0; 832 833 if (!info) 834 return -EINVAL; 835 836 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 837 info_idx = newidx; 838 return do_fbcon_takeover(0); 839 } 840 841 if (oldidx != -1) 842 oldinfo = registered_fb[oldidx]; 843 844 found = search_fb_in_map(newidx); 845 846 con2fb_map[unit] = newidx; 847 if (!err && !found) 848 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 849 850 851 /* 852 * If old fb is not mapped to any of the consoles, 853 * fbcon should release it. 854 */ 855 if (!err && oldinfo && !search_fb_in_map(oldidx)) 856 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 857 found); 858 859 if (!err) { 860 int show_logo = (fg_console == 0 && !user && 861 logo_shown != FBCON_LOGO_DONTSHOW); 862 863 if (!found) 864 fbcon_add_cursor_timer(info); 865 con2fb_map_boot[unit] = newidx; 866 con2fb_init_display(vc, info, unit, show_logo); 867 } 868 869 if (!search_fb_in_map(info_idx)) 870 info_idx = newidx; 871 872 return err; 873 } 874 875 /* 876 * Low Level Operations 877 */ 878 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 879 static int var_to_display(struct display *disp, 880 struct fb_var_screeninfo *var, 881 struct fb_info *info) 882 { 883 disp->xres_virtual = var->xres_virtual; 884 disp->yres_virtual = var->yres_virtual; 885 disp->bits_per_pixel = var->bits_per_pixel; 886 disp->grayscale = var->grayscale; 887 disp->nonstd = var->nonstd; 888 disp->accel_flags = var->accel_flags; 889 disp->height = var->height; 890 disp->width = var->width; 891 disp->red = var->red; 892 disp->green = var->green; 893 disp->blue = var->blue; 894 disp->transp = var->transp; 895 disp->rotate = var->rotate; 896 disp->mode = fb_match_mode(var, &info->modelist); 897 if (disp->mode == NULL) 898 /* This should not happen */ 899 return -EINVAL; 900 return 0; 901 } 902 903 static void display_to_var(struct fb_var_screeninfo *var, 904 struct display *disp) 905 { 906 fb_videomode_to_var(var, disp->mode); 907 var->xres_virtual = disp->xres_virtual; 908 var->yres_virtual = disp->yres_virtual; 909 var->bits_per_pixel = disp->bits_per_pixel; 910 var->grayscale = disp->grayscale; 911 var->nonstd = disp->nonstd; 912 var->accel_flags = disp->accel_flags; 913 var->height = disp->height; 914 var->width = disp->width; 915 var->red = disp->red; 916 var->green = disp->green; 917 var->blue = disp->blue; 918 var->transp = disp->transp; 919 var->rotate = disp->rotate; 920 } 921 922 static const char *fbcon_startup(void) 923 { 924 const char *display_desc = "frame buffer device"; 925 struct display *p = &fb_display[fg_console]; 926 struct vc_data *vc = vc_cons[fg_console].d; 927 const struct font_desc *font = NULL; 928 struct module *owner; 929 struct fb_info *info = NULL; 930 struct fbcon_ops *ops; 931 int rows, cols; 932 933 /* 934 * If num_registered_fb is zero, this is a call for the dummy part. 935 * The frame buffer devices weren't initialized yet. 936 */ 937 if (!num_registered_fb || info_idx == -1) 938 return display_desc; 939 /* 940 * Instead of blindly using registered_fb[0], we use info_idx, set by 941 * fb_console_init(); 942 */ 943 info = registered_fb[info_idx]; 944 if (!info) 945 return NULL; 946 947 owner = info->fbops->owner; 948 if (!try_module_get(owner)) 949 return NULL; 950 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 951 module_put(owner); 952 return NULL; 953 } 954 955 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 956 if (!ops) { 957 module_put(owner); 958 return NULL; 959 } 960 961 ops->currcon = -1; 962 ops->graphics = 1; 963 ops->cur_rotate = -1; 964 ops->cur_blink_jiffies = HZ / 5; 965 ops->info = info; 966 info->fbcon_par = ops; 967 if (initial_rotation != -1) 968 p->con_rotate = initial_rotation; 969 else 970 p->con_rotate = fbcon_platform_get_rotate(info); 971 set_blitting_type(vc, info); 972 973 if (info->fix.type != FB_TYPE_TEXT) { 974 if (fbcon_softback_size) { 975 if (!softback_buf) { 976 softback_buf = 977 (unsigned long) 978 kmalloc(fbcon_softback_size, 979 GFP_KERNEL); 980 if (!softback_buf) { 981 fbcon_softback_size = 0; 982 softback_top = 0; 983 } 984 } 985 } else { 986 if (softback_buf) { 987 kfree((void *) softback_buf); 988 softback_buf = 0; 989 softback_top = 0; 990 } 991 } 992 if (softback_buf) 993 softback_in = softback_top = softback_curr = 994 softback_buf; 995 softback_lines = 0; 996 } 997 998 /* Setup default font */ 999 if (!p->fontdata && !vc->vc_font.data) { 1000 if (!fontname[0] || !(font = find_font(fontname))) 1001 font = get_default_font(info->var.xres, 1002 info->var.yres, 1003 info->pixmap.blit_x, 1004 info->pixmap.blit_y); 1005 vc->vc_font.width = font->width; 1006 vc->vc_font.height = font->height; 1007 vc->vc_font.data = (void *)(p->fontdata = font->data); 1008 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1009 } else { 1010 p->fontdata = vc->vc_font.data; 1011 } 1012 1013 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1014 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1015 cols /= vc->vc_font.width; 1016 rows /= vc->vc_font.height; 1017 vc_resize(vc, cols, rows); 1018 1019 DPRINTK("mode: %s\n", info->fix.id); 1020 DPRINTK("visual: %d\n", info->fix.visual); 1021 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1022 info->var.yres, 1023 info->var.bits_per_pixel); 1024 1025 fbcon_add_cursor_timer(info); 1026 fbcon_has_exited = 0; 1027 return display_desc; 1028 } 1029 1030 static void fbcon_init(struct vc_data *vc, int init) 1031 { 1032 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1033 struct fbcon_ops *ops; 1034 struct vc_data **default_mode = vc->vc_display_fg; 1035 struct vc_data *svc = *default_mode; 1036 struct display *t, *p = &fb_display[vc->vc_num]; 1037 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1038 int cap, ret; 1039 1040 if (info_idx == -1 || info == NULL) 1041 return; 1042 1043 cap = info->flags; 1044 1045 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1046 (info->fix.type == FB_TYPE_TEXT)) 1047 logo = 0; 1048 1049 if (var_to_display(p, &info->var, info)) 1050 return; 1051 1052 if (!info->fbcon_par) 1053 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1054 1055 /* If we are not the first console on this 1056 fb, copy the font from that console */ 1057 t = &fb_display[fg_console]; 1058 if (!p->fontdata) { 1059 if (t->fontdata) { 1060 struct vc_data *fvc = vc_cons[fg_console].d; 1061 1062 vc->vc_font.data = (void *)(p->fontdata = 1063 fvc->vc_font.data); 1064 vc->vc_font.width = fvc->vc_font.width; 1065 vc->vc_font.height = fvc->vc_font.height; 1066 p->userfont = t->userfont; 1067 1068 if (p->userfont) 1069 REFCOUNT(p->fontdata)++; 1070 } else { 1071 const struct font_desc *font = NULL; 1072 1073 if (!fontname[0] || !(font = find_font(fontname))) 1074 font = get_default_font(info->var.xres, 1075 info->var.yres, 1076 info->pixmap.blit_x, 1077 info->pixmap.blit_y); 1078 vc->vc_font.width = font->width; 1079 vc->vc_font.height = font->height; 1080 vc->vc_font.data = (void *)(p->fontdata = font->data); 1081 vc->vc_font.charcount = 256; /* FIXME Need to 1082 support more fonts */ 1083 } 1084 } 1085 1086 if (p->userfont) 1087 charcnt = FNTCHARCNT(p->fontdata); 1088 1089 vc->vc_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT); 1090 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1091 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1092 if (charcnt == 256) { 1093 vc->vc_hi_font_mask = 0; 1094 } else { 1095 vc->vc_hi_font_mask = 0x100; 1096 if (vc->vc_can_do_color) 1097 vc->vc_complement_mask <<= 1; 1098 } 1099 1100 if (!*svc->vc_uni_pagedir_loc) 1101 con_set_default_unimap(svc); 1102 if (!*vc->vc_uni_pagedir_loc) 1103 con_copy_unimap(vc, svc); 1104 1105 ops = info->fbcon_par; 1106 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1107 if (initial_rotation != -1) 1108 p->con_rotate = initial_rotation; 1109 else 1110 p->con_rotate = fbcon_platform_get_rotate(info); 1111 set_blitting_type(vc, info); 1112 1113 cols = vc->vc_cols; 1114 rows = vc->vc_rows; 1115 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1116 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1117 new_cols /= vc->vc_font.width; 1118 new_rows /= vc->vc_font.height; 1119 1120 /* 1121 * We must always set the mode. The mode of the previous console 1122 * driver could be in the same resolution but we are using different 1123 * hardware so we have to initialize the hardware. 1124 * 1125 * We need to do it in fbcon_init() to prevent screen corruption. 1126 */ 1127 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1128 if (info->fbops->fb_set_par && 1129 !(ops->flags & FBCON_FLAGS_INIT)) { 1130 ret = info->fbops->fb_set_par(info); 1131 1132 if (ret) 1133 printk(KERN_ERR "fbcon_init: detected " 1134 "unhandled fb_set_par error, " 1135 "error code %d\n", ret); 1136 } 1137 1138 ops->flags |= FBCON_FLAGS_INIT; 1139 } 1140 1141 ops->graphics = 0; 1142 1143 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1144 !(cap & FBINFO_HWACCEL_DISABLED)) 1145 p->scrollmode = SCROLL_MOVE; 1146 else /* default to something safe */ 1147 p->scrollmode = SCROLL_REDRAW; 1148 1149 /* 1150 * ++guenther: console.c:vc_allocate() relies on initializing 1151 * vc_{cols,rows}, but we must not set those if we are only 1152 * resizing the console. 1153 */ 1154 if (init) { 1155 vc->vc_cols = new_cols; 1156 vc->vc_rows = new_rows; 1157 } else 1158 vc_resize(vc, new_cols, new_rows); 1159 1160 if (logo) 1161 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1162 1163 if (vc == svc && softback_buf) 1164 fbcon_update_softback(vc); 1165 1166 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1167 ops->rotate = FB_ROTATE_UR; 1168 set_blitting_type(vc, info); 1169 } 1170 1171 ops->p = &fb_display[fg_console]; 1172 } 1173 1174 static void fbcon_free_font(struct display *p, bool freefont) 1175 { 1176 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1177 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1178 p->fontdata = NULL; 1179 p->userfont = 0; 1180 } 1181 1182 static void set_vc_hi_font(struct vc_data *vc, bool set); 1183 1184 static void fbcon_deinit(struct vc_data *vc) 1185 { 1186 struct display *p = &fb_display[vc->vc_num]; 1187 struct fb_info *info; 1188 struct fbcon_ops *ops; 1189 int idx; 1190 bool free_font = true; 1191 1192 idx = con2fb_map[vc->vc_num]; 1193 1194 if (idx == -1) 1195 goto finished; 1196 1197 info = registered_fb[idx]; 1198 1199 if (!info) 1200 goto finished; 1201 1202 if (info->flags & FBINFO_MISC_FIRMWARE) 1203 free_font = false; 1204 ops = info->fbcon_par; 1205 1206 if (!ops) 1207 goto finished; 1208 1209 if (con_is_visible(vc)) 1210 fbcon_del_cursor_timer(info); 1211 1212 ops->flags &= ~FBCON_FLAGS_INIT; 1213 finished: 1214 1215 fbcon_free_font(p, free_font); 1216 if (free_font) 1217 vc->vc_font.data = NULL; 1218 1219 if (vc->vc_hi_font_mask) 1220 set_vc_hi_font(vc, false); 1221 1222 if (!con_is_bound(&fb_con)) 1223 fbcon_exit(); 1224 1225 return; 1226 } 1227 1228 /* ====================================================================== */ 1229 1230 /* fbcon_XXX routines - interface used by the world 1231 * 1232 * This system is now divided into two levels because of complications 1233 * caused by hardware scrolling. Top level functions: 1234 * 1235 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1236 * 1237 * handles y values in range [0, scr_height-1] that correspond to real 1238 * screen positions. y_wrap shift means that first line of bitmap may be 1239 * anywhere on this display. These functions convert lineoffsets to 1240 * bitmap offsets and deal with the wrap-around case by splitting blits. 1241 * 1242 * fbcon_bmove_physical_8() -- These functions fast implementations 1243 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1244 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1245 * 1246 * WARNING: 1247 * 1248 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1249 * Implies should only really hardware scroll in rows. Only reason for 1250 * restriction is simplicity & efficiency at the moment. 1251 */ 1252 1253 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1254 int width) 1255 { 1256 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1257 struct fbcon_ops *ops = info->fbcon_par; 1258 1259 struct display *p = &fb_display[vc->vc_num]; 1260 u_int y_break; 1261 1262 if (fbcon_is_inactive(vc, info)) 1263 return; 1264 1265 if (!height || !width) 1266 return; 1267 1268 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1269 vc->vc_top = 0; 1270 /* 1271 * If the font dimensions are not an integral of the display 1272 * dimensions then the ops->clear below won't end up clearing 1273 * the margins. Call clear_margins here in case the logo 1274 * bitmap stretched into the margin area. 1275 */ 1276 fbcon_clear_margins(vc, 0); 1277 } 1278 1279 /* Split blits that cross physical y_wrap boundary */ 1280 1281 y_break = p->vrows - p->yscroll; 1282 if (sy < y_break && sy + height - 1 >= y_break) { 1283 u_int b = y_break - sy; 1284 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1285 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1286 width); 1287 } else 1288 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1289 } 1290 1291 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1292 int count, int ypos, int xpos) 1293 { 1294 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1295 struct display *p = &fb_display[vc->vc_num]; 1296 struct fbcon_ops *ops = info->fbcon_par; 1297 1298 if (!fbcon_is_inactive(vc, info)) 1299 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1300 get_color(vc, info, scr_readw(s), 1), 1301 get_color(vc, info, scr_readw(s), 0)); 1302 } 1303 1304 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1305 { 1306 unsigned short chr; 1307 1308 scr_writew(c, &chr); 1309 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1310 } 1311 1312 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1313 { 1314 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1315 struct fbcon_ops *ops = info->fbcon_par; 1316 1317 if (!fbcon_is_inactive(vc, info)) 1318 ops->clear_margins(vc, info, margin_color, bottom_only); 1319 } 1320 1321 static void fbcon_cursor(struct vc_data *vc, int mode) 1322 { 1323 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1324 struct fbcon_ops *ops = info->fbcon_par; 1325 int y; 1326 int c = scr_readw((u16 *) vc->vc_pos); 1327 1328 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1329 1330 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1331 return; 1332 1333 if (vc->vc_cursor_type & 0x10) 1334 fbcon_del_cursor_timer(info); 1335 else 1336 fbcon_add_cursor_timer(info); 1337 1338 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1339 if (mode & CM_SOFTBACK) { 1340 mode &= ~CM_SOFTBACK; 1341 y = softback_lines; 1342 } else { 1343 if (softback_lines) 1344 fbcon_set_origin(vc); 1345 y = 0; 1346 } 1347 1348 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), 1349 get_color(vc, info, c, 0)); 1350 } 1351 1352 static int scrollback_phys_max = 0; 1353 static int scrollback_max = 0; 1354 static int scrollback_current = 0; 1355 1356 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1357 int unit) 1358 { 1359 struct display *p, *t; 1360 struct vc_data **default_mode, *vc; 1361 struct vc_data *svc; 1362 struct fbcon_ops *ops = info->fbcon_par; 1363 int rows, cols, charcnt = 256; 1364 1365 p = &fb_display[unit]; 1366 1367 if (var_to_display(p, var, info)) 1368 return; 1369 1370 vc = vc_cons[unit].d; 1371 1372 if (!vc) 1373 return; 1374 1375 default_mode = vc->vc_display_fg; 1376 svc = *default_mode; 1377 t = &fb_display[svc->vc_num]; 1378 1379 if (!vc->vc_font.data) { 1380 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1381 vc->vc_font.width = (*default_mode)->vc_font.width; 1382 vc->vc_font.height = (*default_mode)->vc_font.height; 1383 p->userfont = t->userfont; 1384 if (p->userfont) 1385 REFCOUNT(p->fontdata)++; 1386 } 1387 if (p->userfont) 1388 charcnt = FNTCHARCNT(p->fontdata); 1389 1390 var->activate = FB_ACTIVATE_NOW; 1391 info->var.activate = var->activate; 1392 var->yoffset = info->var.yoffset; 1393 var->xoffset = info->var.xoffset; 1394 fb_set_var(info, var); 1395 ops->var = info->var; 1396 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1397 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1398 if (charcnt == 256) { 1399 vc->vc_hi_font_mask = 0; 1400 } else { 1401 vc->vc_hi_font_mask = 0x100; 1402 if (vc->vc_can_do_color) 1403 vc->vc_complement_mask <<= 1; 1404 } 1405 1406 if (!*svc->vc_uni_pagedir_loc) 1407 con_set_default_unimap(svc); 1408 if (!*vc->vc_uni_pagedir_loc) 1409 con_copy_unimap(vc, svc); 1410 1411 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1412 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1413 cols /= vc->vc_font.width; 1414 rows /= vc->vc_font.height; 1415 vc_resize(vc, cols, rows); 1416 1417 if (con_is_visible(vc)) { 1418 update_screen(vc); 1419 if (softback_buf) 1420 fbcon_update_softback(vc); 1421 } 1422 } 1423 1424 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1425 { 1426 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1427 struct fbcon_ops *ops = info->fbcon_par; 1428 struct display *p = &fb_display[vc->vc_num]; 1429 1430 p->yscroll += count; 1431 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1432 p->yscroll -= p->vrows; 1433 ops->var.xoffset = 0; 1434 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1435 ops->var.vmode |= FB_VMODE_YWRAP; 1436 ops->update_start(info); 1437 scrollback_max += count; 1438 if (scrollback_max > scrollback_phys_max) 1439 scrollback_max = scrollback_phys_max; 1440 scrollback_current = 0; 1441 } 1442 1443 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1444 { 1445 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1446 struct fbcon_ops *ops = info->fbcon_par; 1447 struct display *p = &fb_display[vc->vc_num]; 1448 1449 p->yscroll -= count; 1450 if (p->yscroll < 0) /* Deal with wrap */ 1451 p->yscroll += p->vrows; 1452 ops->var.xoffset = 0; 1453 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1454 ops->var.vmode |= FB_VMODE_YWRAP; 1455 ops->update_start(info); 1456 scrollback_max -= count; 1457 if (scrollback_max < 0) 1458 scrollback_max = 0; 1459 scrollback_current = 0; 1460 } 1461 1462 static __inline__ void ypan_up(struct vc_data *vc, int count) 1463 { 1464 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1465 struct display *p = &fb_display[vc->vc_num]; 1466 struct fbcon_ops *ops = info->fbcon_par; 1467 1468 p->yscroll += count; 1469 if (p->yscroll > p->vrows - vc->vc_rows) { 1470 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1471 0, 0, 0, vc->vc_rows, vc->vc_cols); 1472 p->yscroll -= p->vrows - vc->vc_rows; 1473 } 1474 1475 ops->var.xoffset = 0; 1476 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1477 ops->var.vmode &= ~FB_VMODE_YWRAP; 1478 ops->update_start(info); 1479 fbcon_clear_margins(vc, 1); 1480 scrollback_max += count; 1481 if (scrollback_max > scrollback_phys_max) 1482 scrollback_max = scrollback_phys_max; 1483 scrollback_current = 0; 1484 } 1485 1486 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1487 { 1488 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1489 struct fbcon_ops *ops = info->fbcon_par; 1490 struct display *p = &fb_display[vc->vc_num]; 1491 1492 p->yscroll += count; 1493 1494 if (p->yscroll > p->vrows - vc->vc_rows) { 1495 p->yscroll -= p->vrows - vc->vc_rows; 1496 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1497 } 1498 1499 ops->var.xoffset = 0; 1500 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1501 ops->var.vmode &= ~FB_VMODE_YWRAP; 1502 ops->update_start(info); 1503 fbcon_clear_margins(vc, 1); 1504 scrollback_max += count; 1505 if (scrollback_max > scrollback_phys_max) 1506 scrollback_max = scrollback_phys_max; 1507 scrollback_current = 0; 1508 } 1509 1510 static __inline__ void ypan_down(struct vc_data *vc, int count) 1511 { 1512 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1513 struct display *p = &fb_display[vc->vc_num]; 1514 struct fbcon_ops *ops = info->fbcon_par; 1515 1516 p->yscroll -= count; 1517 if (p->yscroll < 0) { 1518 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1519 0, vc->vc_rows, vc->vc_cols); 1520 p->yscroll += p->vrows - vc->vc_rows; 1521 } 1522 1523 ops->var.xoffset = 0; 1524 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1525 ops->var.vmode &= ~FB_VMODE_YWRAP; 1526 ops->update_start(info); 1527 fbcon_clear_margins(vc, 1); 1528 scrollback_max -= count; 1529 if (scrollback_max < 0) 1530 scrollback_max = 0; 1531 scrollback_current = 0; 1532 } 1533 1534 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1535 { 1536 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1537 struct fbcon_ops *ops = info->fbcon_par; 1538 struct display *p = &fb_display[vc->vc_num]; 1539 1540 p->yscroll -= count; 1541 1542 if (p->yscroll < 0) { 1543 p->yscroll += p->vrows - vc->vc_rows; 1544 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1545 } 1546 1547 ops->var.xoffset = 0; 1548 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1549 ops->var.vmode &= ~FB_VMODE_YWRAP; 1550 ops->update_start(info); 1551 fbcon_clear_margins(vc, 1); 1552 scrollback_max -= count; 1553 if (scrollback_max < 0) 1554 scrollback_max = 0; 1555 scrollback_current = 0; 1556 } 1557 1558 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, 1559 long delta) 1560 { 1561 int count = vc->vc_rows; 1562 unsigned short *d, *s; 1563 unsigned long n; 1564 int line = 0; 1565 1566 d = (u16 *) softback_curr; 1567 if (d == (u16 *) softback_in) 1568 d = (u16 *) vc->vc_origin; 1569 n = softback_curr + delta * vc->vc_size_row; 1570 softback_lines -= delta; 1571 if (delta < 0) { 1572 if (softback_curr < softback_top && n < softback_buf) { 1573 n += softback_end - softback_buf; 1574 if (n < softback_top) { 1575 softback_lines -= 1576 (softback_top - n) / vc->vc_size_row; 1577 n = softback_top; 1578 } 1579 } else if (softback_curr >= softback_top 1580 && n < softback_top) { 1581 softback_lines -= 1582 (softback_top - n) / vc->vc_size_row; 1583 n = softback_top; 1584 } 1585 } else { 1586 if (softback_curr > softback_in && n >= softback_end) { 1587 n += softback_buf - softback_end; 1588 if (n > softback_in) { 1589 n = softback_in; 1590 softback_lines = 0; 1591 } 1592 } else if (softback_curr <= softback_in && n > softback_in) { 1593 n = softback_in; 1594 softback_lines = 0; 1595 } 1596 } 1597 if (n == softback_curr) 1598 return; 1599 softback_curr = n; 1600 s = (u16 *) softback_curr; 1601 if (s == (u16 *) softback_in) 1602 s = (u16 *) vc->vc_origin; 1603 while (count--) { 1604 unsigned short *start; 1605 unsigned short *le; 1606 unsigned short c; 1607 int x = 0; 1608 unsigned short attr = 1; 1609 1610 start = s; 1611 le = advance_row(s, 1); 1612 do { 1613 c = scr_readw(s); 1614 if (attr != (c & 0xff00)) { 1615 attr = c & 0xff00; 1616 if (s > start) { 1617 fbcon_putcs(vc, start, s - start, 1618 line, x); 1619 x += s - start; 1620 start = s; 1621 } 1622 } 1623 if (c == scr_readw(d)) { 1624 if (s > start) { 1625 fbcon_putcs(vc, start, s - start, 1626 line, x); 1627 x += s - start + 1; 1628 start = s + 1; 1629 } else { 1630 x++; 1631 start++; 1632 } 1633 } 1634 s++; 1635 d++; 1636 } while (s < le); 1637 if (s > start) 1638 fbcon_putcs(vc, start, s - start, line, x); 1639 line++; 1640 if (d == (u16 *) softback_end) 1641 d = (u16 *) softback_buf; 1642 if (d == (u16 *) softback_in) 1643 d = (u16 *) vc->vc_origin; 1644 if (s == (u16 *) softback_end) 1645 s = (u16 *) softback_buf; 1646 if (s == (u16 *) softback_in) 1647 s = (u16 *) vc->vc_origin; 1648 } 1649 } 1650 1651 static void fbcon_redraw_move(struct vc_data *vc, struct display *p, 1652 int line, int count, int dy) 1653 { 1654 unsigned short *s = (unsigned short *) 1655 (vc->vc_origin + vc->vc_size_row * line); 1656 1657 while (count--) { 1658 unsigned short *start = s; 1659 unsigned short *le = advance_row(s, 1); 1660 unsigned short c; 1661 int x = 0; 1662 unsigned short attr = 1; 1663 1664 do { 1665 c = scr_readw(s); 1666 if (attr != (c & 0xff00)) { 1667 attr = c & 0xff00; 1668 if (s > start) { 1669 fbcon_putcs(vc, start, s - start, 1670 dy, x); 1671 x += s - start; 1672 start = s; 1673 } 1674 } 1675 console_conditional_schedule(); 1676 s++; 1677 } while (s < le); 1678 if (s > start) 1679 fbcon_putcs(vc, start, s - start, dy, x); 1680 console_conditional_schedule(); 1681 dy++; 1682 } 1683 } 1684 1685 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1686 struct display *p, int line, int count, int ycount) 1687 { 1688 int offset = ycount * vc->vc_cols; 1689 unsigned short *d = (unsigned short *) 1690 (vc->vc_origin + vc->vc_size_row * line); 1691 unsigned short *s = d + offset; 1692 struct fbcon_ops *ops = info->fbcon_par; 1693 1694 while (count--) { 1695 unsigned short *start = s; 1696 unsigned short *le = advance_row(s, 1); 1697 unsigned short c; 1698 int x = 0; 1699 1700 do { 1701 c = scr_readw(s); 1702 1703 if (c == scr_readw(d)) { 1704 if (s > start) { 1705 ops->bmove(vc, info, line + ycount, x, 1706 line, x, 1, s-start); 1707 x += s - start + 1; 1708 start = s + 1; 1709 } else { 1710 x++; 1711 start++; 1712 } 1713 } 1714 1715 scr_writew(c, d); 1716 console_conditional_schedule(); 1717 s++; 1718 d++; 1719 } while (s < le); 1720 if (s > start) 1721 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1722 s-start); 1723 console_conditional_schedule(); 1724 if (ycount > 0) 1725 line++; 1726 else { 1727 line--; 1728 /* NOTE: We subtract two lines from these pointers */ 1729 s -= vc->vc_size_row; 1730 d -= vc->vc_size_row; 1731 } 1732 } 1733 } 1734 1735 static void fbcon_redraw(struct vc_data *vc, struct display *p, 1736 int line, int count, int offset) 1737 { 1738 unsigned short *d = (unsigned short *) 1739 (vc->vc_origin + vc->vc_size_row * line); 1740 unsigned short *s = d + offset; 1741 1742 while (count--) { 1743 unsigned short *start = s; 1744 unsigned short *le = advance_row(s, 1); 1745 unsigned short c; 1746 int x = 0; 1747 unsigned short attr = 1; 1748 1749 do { 1750 c = scr_readw(s); 1751 if (attr != (c & 0xff00)) { 1752 attr = c & 0xff00; 1753 if (s > start) { 1754 fbcon_putcs(vc, start, s - start, 1755 line, x); 1756 x += s - start; 1757 start = s; 1758 } 1759 } 1760 if (c == scr_readw(d)) { 1761 if (s > start) { 1762 fbcon_putcs(vc, start, s - start, 1763 line, x); 1764 x += s - start + 1; 1765 start = s + 1; 1766 } else { 1767 x++; 1768 start++; 1769 } 1770 } 1771 scr_writew(c, d); 1772 console_conditional_schedule(); 1773 s++; 1774 d++; 1775 } while (s < le); 1776 if (s > start) 1777 fbcon_putcs(vc, start, s - start, line, x); 1778 console_conditional_schedule(); 1779 if (offset > 0) 1780 line++; 1781 else { 1782 line--; 1783 /* NOTE: We subtract two lines from these pointers */ 1784 s -= vc->vc_size_row; 1785 d -= vc->vc_size_row; 1786 } 1787 } 1788 } 1789 1790 static inline void fbcon_softback_note(struct vc_data *vc, int t, 1791 int count) 1792 { 1793 unsigned short *p; 1794 1795 if (vc->vc_num != fg_console) 1796 return; 1797 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); 1798 1799 while (count) { 1800 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); 1801 count--; 1802 p = advance_row(p, 1); 1803 softback_in += vc->vc_size_row; 1804 if (softback_in == softback_end) 1805 softback_in = softback_buf; 1806 if (softback_in == softback_top) { 1807 softback_top += vc->vc_size_row; 1808 if (softback_top == softback_end) 1809 softback_top = softback_buf; 1810 } 1811 } 1812 softback_curr = softback_in; 1813 } 1814 1815 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1816 enum con_scroll dir, unsigned int count) 1817 { 1818 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1819 struct display *p = &fb_display[vc->vc_num]; 1820 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1821 1822 if (fbcon_is_inactive(vc, info)) 1823 return true; 1824 1825 fbcon_cursor(vc, CM_ERASE); 1826 1827 /* 1828 * ++Geert: Only use ywrap/ypan if the console is in text mode 1829 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1830 * whole screen (prevents flicker). 1831 */ 1832 1833 switch (dir) { 1834 case SM_UP: 1835 if (count > vc->vc_rows) /* Maximum realistic size */ 1836 count = vc->vc_rows; 1837 if (softback_top) 1838 fbcon_softback_note(vc, t, count); 1839 if (logo_shown >= 0) 1840 goto redraw_up; 1841 switch (p->scrollmode) { 1842 case SCROLL_MOVE: 1843 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1844 count); 1845 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1846 scr_memsetw((unsigned short *) (vc->vc_origin + 1847 vc->vc_size_row * 1848 (b - count)), 1849 vc->vc_video_erase_char, 1850 vc->vc_size_row * count); 1851 return true; 1852 break; 1853 1854 case SCROLL_WRAP_MOVE: 1855 if (b - t - count > 3 * vc->vc_rows >> 2) { 1856 if (t > 0) 1857 fbcon_bmove(vc, 0, 0, count, 0, t, 1858 vc->vc_cols); 1859 ywrap_up(vc, count); 1860 if (vc->vc_rows - b > 0) 1861 fbcon_bmove(vc, b - count, 0, b, 0, 1862 vc->vc_rows - b, 1863 vc->vc_cols); 1864 } else if (info->flags & FBINFO_READS_FAST) 1865 fbcon_bmove(vc, t + count, 0, t, 0, 1866 b - t - count, vc->vc_cols); 1867 else 1868 goto redraw_up; 1869 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1870 break; 1871 1872 case SCROLL_PAN_REDRAW: 1873 if ((p->yscroll + count <= 1874 2 * (p->vrows - vc->vc_rows)) 1875 && ((!scroll_partial && (b - t == vc->vc_rows)) 1876 || (scroll_partial 1877 && (b - t - count > 1878 3 * vc->vc_rows >> 2)))) { 1879 if (t > 0) 1880 fbcon_redraw_move(vc, p, 0, t, count); 1881 ypan_up_redraw(vc, t, count); 1882 if (vc->vc_rows - b > 0) 1883 fbcon_redraw_move(vc, p, b, 1884 vc->vc_rows - b, b); 1885 } else 1886 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1887 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1888 break; 1889 1890 case SCROLL_PAN_MOVE: 1891 if ((p->yscroll + count <= 1892 2 * (p->vrows - vc->vc_rows)) 1893 && ((!scroll_partial && (b - t == vc->vc_rows)) 1894 || (scroll_partial 1895 && (b - t - count > 1896 3 * vc->vc_rows >> 2)))) { 1897 if (t > 0) 1898 fbcon_bmove(vc, 0, 0, count, 0, t, 1899 vc->vc_cols); 1900 ypan_up(vc, count); 1901 if (vc->vc_rows - b > 0) 1902 fbcon_bmove(vc, b - count, 0, b, 0, 1903 vc->vc_rows - b, 1904 vc->vc_cols); 1905 } else if (info->flags & FBINFO_READS_FAST) 1906 fbcon_bmove(vc, t + count, 0, t, 0, 1907 b - t - count, vc->vc_cols); 1908 else 1909 goto redraw_up; 1910 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1911 break; 1912 1913 case SCROLL_REDRAW: 1914 redraw_up: 1915 fbcon_redraw(vc, p, t, b - t - count, 1916 count * vc->vc_cols); 1917 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1918 scr_memsetw((unsigned short *) (vc->vc_origin + 1919 vc->vc_size_row * 1920 (b - count)), 1921 vc->vc_video_erase_char, 1922 vc->vc_size_row * count); 1923 return true; 1924 } 1925 break; 1926 1927 case SM_DOWN: 1928 if (count > vc->vc_rows) /* Maximum realistic size */ 1929 count = vc->vc_rows; 1930 if (logo_shown >= 0) 1931 goto redraw_down; 1932 switch (p->scrollmode) { 1933 case SCROLL_MOVE: 1934 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1935 -count); 1936 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1937 scr_memsetw((unsigned short *) (vc->vc_origin + 1938 vc->vc_size_row * 1939 t), 1940 vc->vc_video_erase_char, 1941 vc->vc_size_row * count); 1942 return true; 1943 break; 1944 1945 case SCROLL_WRAP_MOVE: 1946 if (b - t - count > 3 * vc->vc_rows >> 2) { 1947 if (vc->vc_rows - b > 0) 1948 fbcon_bmove(vc, b, 0, b - count, 0, 1949 vc->vc_rows - b, 1950 vc->vc_cols); 1951 ywrap_down(vc, count); 1952 if (t > 0) 1953 fbcon_bmove(vc, count, 0, 0, 0, t, 1954 vc->vc_cols); 1955 } else if (info->flags & FBINFO_READS_FAST) 1956 fbcon_bmove(vc, t, 0, t + count, 0, 1957 b - t - count, vc->vc_cols); 1958 else 1959 goto redraw_down; 1960 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1961 break; 1962 1963 case SCROLL_PAN_MOVE: 1964 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1965 && ((!scroll_partial && (b - t == vc->vc_rows)) 1966 || (scroll_partial 1967 && (b - t - count > 1968 3 * vc->vc_rows >> 2)))) { 1969 if (vc->vc_rows - b > 0) 1970 fbcon_bmove(vc, b, 0, b - count, 0, 1971 vc->vc_rows - b, 1972 vc->vc_cols); 1973 ypan_down(vc, count); 1974 if (t > 0) 1975 fbcon_bmove(vc, count, 0, 0, 0, t, 1976 vc->vc_cols); 1977 } else if (info->flags & FBINFO_READS_FAST) 1978 fbcon_bmove(vc, t, 0, t + count, 0, 1979 b - t - count, vc->vc_cols); 1980 else 1981 goto redraw_down; 1982 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1983 break; 1984 1985 case SCROLL_PAN_REDRAW: 1986 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1987 && ((!scroll_partial && (b - t == vc->vc_rows)) 1988 || (scroll_partial 1989 && (b - t - count > 1990 3 * vc->vc_rows >> 2)))) { 1991 if (vc->vc_rows - b > 0) 1992 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 1993 b - count); 1994 ypan_down_redraw(vc, t, count); 1995 if (t > 0) 1996 fbcon_redraw_move(vc, p, count, t, 0); 1997 } else 1998 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 1999 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2000 break; 2001 2002 case SCROLL_REDRAW: 2003 redraw_down: 2004 fbcon_redraw(vc, p, b - 1, b - t - count, 2005 -count * vc->vc_cols); 2006 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2007 scr_memsetw((unsigned short *) (vc->vc_origin + 2008 vc->vc_size_row * 2009 t), 2010 vc->vc_video_erase_char, 2011 vc->vc_size_row * count); 2012 return true; 2013 } 2014 } 2015 return false; 2016 } 2017 2018 2019 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 2020 int height, int width) 2021 { 2022 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2023 struct display *p = &fb_display[vc->vc_num]; 2024 2025 if (fbcon_is_inactive(vc, info)) 2026 return; 2027 2028 if (!width || !height) 2029 return; 2030 2031 /* Split blits that cross physical y_wrap case. 2032 * Pathological case involves 4 blits, better to use recursive 2033 * code rather than unrolled case 2034 * 2035 * Recursive invocations don't need to erase the cursor over and 2036 * over again, so we use fbcon_bmove_rec() 2037 */ 2038 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 2039 p->vrows - p->yscroll); 2040 } 2041 2042 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, 2043 int dy, int dx, int height, int width, u_int y_break) 2044 { 2045 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2046 struct fbcon_ops *ops = info->fbcon_par; 2047 u_int b; 2048 2049 if (sy < y_break && sy + height > y_break) { 2050 b = y_break - sy; 2051 if (dy < sy) { /* Avoid trashing self */ 2052 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2053 y_break); 2054 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2055 height - b, width, y_break); 2056 } else { 2057 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2058 height - b, width, y_break); 2059 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2060 y_break); 2061 } 2062 return; 2063 } 2064 2065 if (dy < y_break && dy + height > y_break) { 2066 b = y_break - dy; 2067 if (dy < sy) { /* Avoid trashing self */ 2068 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2069 y_break); 2070 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2071 height - b, width, y_break); 2072 } else { 2073 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2074 height - b, width, y_break); 2075 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2076 y_break); 2077 } 2078 return; 2079 } 2080 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 2081 height, width); 2082 } 2083 2084 static void updatescrollmode(struct display *p, 2085 struct fb_info *info, 2086 struct vc_data *vc) 2087 { 2088 struct fbcon_ops *ops = info->fbcon_par; 2089 int fh = vc->vc_font.height; 2090 int cap = info->flags; 2091 u16 t = 0; 2092 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 2093 info->fix.xpanstep); 2094 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 2095 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2096 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 2097 info->var.xres_virtual); 2098 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 2099 divides(ypan, vc->vc_font.height) && vyres > yres; 2100 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 2101 divides(ywrap, vc->vc_font.height) && 2102 divides(vc->vc_font.height, vyres) && 2103 divides(vc->vc_font.height, yres); 2104 int reading_fast = cap & FBINFO_READS_FAST; 2105 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 2106 !(cap & FBINFO_HWACCEL_DISABLED); 2107 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 2108 !(cap & FBINFO_HWACCEL_DISABLED); 2109 2110 p->vrows = vyres/fh; 2111 if (yres > (fh * (vc->vc_rows + 1))) 2112 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 2113 if ((yres % fh) && (vyres % fh < yres % fh)) 2114 p->vrows--; 2115 2116 if (good_wrap || good_pan) { 2117 if (reading_fast || fast_copyarea) 2118 p->scrollmode = good_wrap ? 2119 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 2120 else 2121 p->scrollmode = good_wrap ? SCROLL_REDRAW : 2122 SCROLL_PAN_REDRAW; 2123 } else { 2124 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2125 p->scrollmode = SCROLL_MOVE; 2126 else 2127 p->scrollmode = SCROLL_REDRAW; 2128 } 2129 } 2130 2131 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2132 unsigned int height, unsigned int user) 2133 { 2134 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2135 struct fbcon_ops *ops = info->fbcon_par; 2136 struct display *p = &fb_display[vc->vc_num]; 2137 struct fb_var_screeninfo var = info->var; 2138 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2139 2140 virt_w = FBCON_SWAP(ops->rotate, width, height); 2141 virt_h = FBCON_SWAP(ops->rotate, height, width); 2142 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2143 vc->vc_font.height); 2144 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2145 vc->vc_font.width); 2146 var.xres = virt_w * virt_fw; 2147 var.yres = virt_h * virt_fh; 2148 x_diff = info->var.xres - var.xres; 2149 y_diff = info->var.yres - var.yres; 2150 if (x_diff < 0 || x_diff > virt_fw || 2151 y_diff < 0 || y_diff > virt_fh) { 2152 const struct fb_videomode *mode; 2153 2154 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2155 mode = fb_find_best_mode(&var, &info->modelist); 2156 if (mode == NULL) 2157 return -EINVAL; 2158 display_to_var(&var, p); 2159 fb_videomode_to_var(&var, mode); 2160 2161 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2162 return -EINVAL; 2163 2164 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2165 if (con_is_visible(vc)) { 2166 var.activate = FB_ACTIVATE_NOW | 2167 FB_ACTIVATE_FORCE; 2168 fb_set_var(info, &var); 2169 } 2170 var_to_display(p, &info->var, info); 2171 ops->var = info->var; 2172 } 2173 updatescrollmode(p, info, vc); 2174 return 0; 2175 } 2176 2177 static int fbcon_switch(struct vc_data *vc) 2178 { 2179 struct fb_info *info, *old_info = NULL; 2180 struct fbcon_ops *ops; 2181 struct display *p = &fb_display[vc->vc_num]; 2182 struct fb_var_screeninfo var; 2183 int i, ret, prev_console, charcnt = 256; 2184 2185 info = registered_fb[con2fb_map[vc->vc_num]]; 2186 ops = info->fbcon_par; 2187 2188 if (softback_top) { 2189 if (softback_lines) 2190 fbcon_set_origin(vc); 2191 softback_top = softback_curr = softback_in = softback_buf; 2192 softback_lines = 0; 2193 fbcon_update_softback(vc); 2194 } 2195 2196 if (logo_shown >= 0) { 2197 struct vc_data *conp2 = vc_cons[logo_shown].d; 2198 2199 if (conp2->vc_top == logo_lines 2200 && conp2->vc_bottom == conp2->vc_rows) 2201 conp2->vc_top = 0; 2202 logo_shown = FBCON_LOGO_CANSHOW; 2203 } 2204 2205 prev_console = ops->currcon; 2206 if (prev_console != -1) 2207 old_info = registered_fb[con2fb_map[prev_console]]; 2208 /* 2209 * FIXME: If we have multiple fbdev's loaded, we need to 2210 * update all info->currcon. Perhaps, we can place this 2211 * in a centralized structure, but this might break some 2212 * drivers. 2213 * 2214 * info->currcon = vc->vc_num; 2215 */ 2216 for (i = 0; i < FB_MAX; i++) { 2217 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) { 2218 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2219 2220 o->currcon = vc->vc_num; 2221 } 2222 } 2223 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2224 display_to_var(&var, p); 2225 var.activate = FB_ACTIVATE_NOW; 2226 2227 /* 2228 * make sure we don't unnecessarily trip the memcmp() 2229 * in fb_set_var() 2230 */ 2231 info->var.activate = var.activate; 2232 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2233 fb_set_var(info, &var); 2234 ops->var = info->var; 2235 2236 if (old_info != NULL && (old_info != info || 2237 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2238 if (info->fbops->fb_set_par) { 2239 ret = info->fbops->fb_set_par(info); 2240 2241 if (ret) 2242 printk(KERN_ERR "fbcon_switch: detected " 2243 "unhandled fb_set_par error, " 2244 "error code %d\n", ret); 2245 } 2246 2247 if (old_info != info) 2248 fbcon_del_cursor_timer(old_info); 2249 } 2250 2251 if (fbcon_is_inactive(vc, info) || 2252 ops->blank_state != FB_BLANK_UNBLANK) 2253 fbcon_del_cursor_timer(info); 2254 else 2255 fbcon_add_cursor_timer(info); 2256 2257 set_blitting_type(vc, info); 2258 ops->cursor_reset = 1; 2259 2260 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2261 ops->rotate = FB_ROTATE_UR; 2262 set_blitting_type(vc, info); 2263 } 2264 2265 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2266 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2267 2268 if (p->userfont) 2269 charcnt = FNTCHARCNT(vc->vc_font.data); 2270 2271 if (charcnt > 256) 2272 vc->vc_complement_mask <<= 1; 2273 2274 updatescrollmode(p, info, vc); 2275 2276 switch (p->scrollmode) { 2277 case SCROLL_WRAP_MOVE: 2278 scrollback_phys_max = p->vrows - vc->vc_rows; 2279 break; 2280 case SCROLL_PAN_MOVE: 2281 case SCROLL_PAN_REDRAW: 2282 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2283 if (scrollback_phys_max < 0) 2284 scrollback_phys_max = 0; 2285 break; 2286 default: 2287 scrollback_phys_max = 0; 2288 break; 2289 } 2290 2291 scrollback_max = 0; 2292 scrollback_current = 0; 2293 2294 if (!fbcon_is_inactive(vc, info)) { 2295 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2296 ops->update_start(info); 2297 } 2298 2299 fbcon_set_palette(vc, color_table); 2300 fbcon_clear_margins(vc, 0); 2301 2302 if (logo_shown == FBCON_LOGO_DRAW) { 2303 2304 logo_shown = fg_console; 2305 /* This is protected above by initmem_freed */ 2306 fb_show_logo(info, ops->rotate); 2307 update_region(vc, 2308 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2309 vc->vc_size_row * (vc->vc_bottom - 2310 vc->vc_top) / 2); 2311 return 0; 2312 } 2313 return 1; 2314 } 2315 2316 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2317 int blank) 2318 { 2319 struct fb_event event; 2320 2321 if (blank) { 2322 unsigned short charmask = vc->vc_hi_font_mask ? 2323 0x1ff : 0xff; 2324 unsigned short oldc; 2325 2326 oldc = vc->vc_video_erase_char; 2327 vc->vc_video_erase_char &= charmask; 2328 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2329 vc->vc_video_erase_char = oldc; 2330 } 2331 2332 2333 if (!lock_fb_info(info)) 2334 return; 2335 event.info = info; 2336 event.data = ␣ 2337 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event); 2338 unlock_fb_info(info); 2339 } 2340 2341 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2342 { 2343 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2344 struct fbcon_ops *ops = info->fbcon_par; 2345 2346 if (mode_switch) { 2347 struct fb_var_screeninfo var = info->var; 2348 2349 ops->graphics = 1; 2350 2351 if (!blank) { 2352 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; 2353 fb_set_var(info, &var); 2354 ops->graphics = 0; 2355 ops->var = info->var; 2356 } 2357 } 2358 2359 if (!fbcon_is_inactive(vc, info)) { 2360 if (ops->blank_state != blank) { 2361 ops->blank_state = blank; 2362 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2363 ops->cursor_flash = (!blank); 2364 2365 if (!(info->flags & FBINFO_MISC_USEREVENT)) 2366 if (fb_blank(info, blank)) 2367 fbcon_generic_blank(vc, info, blank); 2368 } 2369 2370 if (!blank) 2371 update_screen(vc); 2372 } 2373 2374 if (mode_switch || fbcon_is_inactive(vc, info) || 2375 ops->blank_state != FB_BLANK_UNBLANK) 2376 fbcon_del_cursor_timer(info); 2377 else 2378 fbcon_add_cursor_timer(info); 2379 2380 return 0; 2381 } 2382 2383 static int fbcon_debug_enter(struct vc_data *vc) 2384 { 2385 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2386 struct fbcon_ops *ops = info->fbcon_par; 2387 2388 ops->save_graphics = ops->graphics; 2389 ops->graphics = 0; 2390 if (info->fbops->fb_debug_enter) 2391 info->fbops->fb_debug_enter(info); 2392 fbcon_set_palette(vc, color_table); 2393 return 0; 2394 } 2395 2396 static int fbcon_debug_leave(struct vc_data *vc) 2397 { 2398 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2399 struct fbcon_ops *ops = info->fbcon_par; 2400 2401 ops->graphics = ops->save_graphics; 2402 if (info->fbops->fb_debug_leave) 2403 info->fbops->fb_debug_leave(info); 2404 return 0; 2405 } 2406 2407 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2408 { 2409 u8 *fontdata = vc->vc_font.data; 2410 u8 *data = font->data; 2411 int i, j; 2412 2413 font->width = vc->vc_font.width; 2414 font->height = vc->vc_font.height; 2415 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2416 if (!font->data) 2417 return 0; 2418 2419 if (font->width <= 8) { 2420 j = vc->vc_font.height; 2421 for (i = 0; i < font->charcount; i++) { 2422 memcpy(data, fontdata, j); 2423 memset(data + j, 0, 32 - j); 2424 data += 32; 2425 fontdata += j; 2426 } 2427 } else if (font->width <= 16) { 2428 j = vc->vc_font.height * 2; 2429 for (i = 0; i < font->charcount; i++) { 2430 memcpy(data, fontdata, j); 2431 memset(data + j, 0, 64 - j); 2432 data += 64; 2433 fontdata += j; 2434 } 2435 } else if (font->width <= 24) { 2436 for (i = 0; i < font->charcount; i++) { 2437 for (j = 0; j < vc->vc_font.height; j++) { 2438 *data++ = fontdata[0]; 2439 *data++ = fontdata[1]; 2440 *data++ = fontdata[2]; 2441 fontdata += sizeof(u32); 2442 } 2443 memset(data, 0, 3 * (32 - j)); 2444 data += 3 * (32 - j); 2445 } 2446 } else { 2447 j = vc->vc_font.height * 4; 2448 for (i = 0; i < font->charcount; i++) { 2449 memcpy(data, fontdata, j); 2450 memset(data + j, 0, 128 - j); 2451 data += 128; 2452 fontdata += j; 2453 } 2454 } 2455 return 0; 2456 } 2457 2458 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2459 static void set_vc_hi_font(struct vc_data *vc, bool set) 2460 { 2461 if (!set) { 2462 vc->vc_hi_font_mask = 0; 2463 if (vc->vc_can_do_color) { 2464 vc->vc_complement_mask >>= 1; 2465 vc->vc_s_complement_mask >>= 1; 2466 } 2467 2468 /* ++Edmund: reorder the attribute bits */ 2469 if (vc->vc_can_do_color) { 2470 unsigned short *cp = 2471 (unsigned short *) vc->vc_origin; 2472 int count = vc->vc_screenbuf_size / 2; 2473 unsigned short c; 2474 for (; count > 0; count--, cp++) { 2475 c = scr_readw(cp); 2476 scr_writew(((c & 0xfe00) >> 1) | 2477 (c & 0xff), cp); 2478 } 2479 c = vc->vc_video_erase_char; 2480 vc->vc_video_erase_char = 2481 ((c & 0xfe00) >> 1) | (c & 0xff); 2482 vc->vc_attr >>= 1; 2483 } 2484 } else { 2485 vc->vc_hi_font_mask = 0x100; 2486 if (vc->vc_can_do_color) { 2487 vc->vc_complement_mask <<= 1; 2488 vc->vc_s_complement_mask <<= 1; 2489 } 2490 2491 /* ++Edmund: reorder the attribute bits */ 2492 { 2493 unsigned short *cp = 2494 (unsigned short *) vc->vc_origin; 2495 int count = vc->vc_screenbuf_size / 2; 2496 unsigned short c; 2497 for (; count > 0; count--, cp++) { 2498 unsigned short newc; 2499 c = scr_readw(cp); 2500 if (vc->vc_can_do_color) 2501 newc = 2502 ((c & 0xff00) << 1) | (c & 2503 0xff); 2504 else 2505 newc = c & ~0x100; 2506 scr_writew(newc, cp); 2507 } 2508 c = vc->vc_video_erase_char; 2509 if (vc->vc_can_do_color) { 2510 vc->vc_video_erase_char = 2511 ((c & 0xff00) << 1) | (c & 0xff); 2512 vc->vc_attr <<= 1; 2513 } else 2514 vc->vc_video_erase_char = c & ~0x100; 2515 } 2516 } 2517 } 2518 2519 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2520 const u8 * data, int userfont) 2521 { 2522 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2523 struct fbcon_ops *ops = info->fbcon_par; 2524 struct display *p = &fb_display[vc->vc_num]; 2525 int resize; 2526 int cnt; 2527 char *old_data = NULL; 2528 2529 if (con_is_visible(vc) && softback_lines) 2530 fbcon_set_origin(vc); 2531 2532 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2533 if (p->userfont) 2534 old_data = vc->vc_font.data; 2535 if (userfont) 2536 cnt = FNTCHARCNT(data); 2537 else 2538 cnt = 256; 2539 vc->vc_font.data = (void *)(p->fontdata = data); 2540 if ((p->userfont = userfont)) 2541 REFCOUNT(data)++; 2542 vc->vc_font.width = w; 2543 vc->vc_font.height = h; 2544 if (vc->vc_hi_font_mask && cnt == 256) 2545 set_vc_hi_font(vc, false); 2546 else if (!vc->vc_hi_font_mask && cnt == 512) 2547 set_vc_hi_font(vc, true); 2548 2549 if (resize) { 2550 int cols, rows; 2551 2552 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2553 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2554 cols /= w; 2555 rows /= h; 2556 vc_resize(vc, cols, rows); 2557 if (con_is_visible(vc) && softback_buf) 2558 fbcon_update_softback(vc); 2559 } else if (con_is_visible(vc) 2560 && vc->vc_mode == KD_TEXT) { 2561 fbcon_clear_margins(vc, 0); 2562 update_screen(vc); 2563 } 2564 2565 if (old_data && (--REFCOUNT(old_data) == 0)) 2566 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2567 return 0; 2568 } 2569 2570 static int fbcon_copy_font(struct vc_data *vc, int con) 2571 { 2572 struct display *od = &fb_display[con]; 2573 struct console_font *f = &vc->vc_font; 2574 2575 if (od->fontdata == f->data) 2576 return 0; /* already the same font... */ 2577 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2578 } 2579 2580 /* 2581 * User asked to set font; we are guaranteed that 2582 * a) width and height are in range 1..32 2583 * b) charcount does not exceed 512 2584 * but lets not assume that, since someone might someday want to use larger 2585 * fonts. And charcount of 512 is small for unicode support. 2586 * 2587 * However, user space gives the font in 32 rows , regardless of 2588 * actual font height. So a new API is needed if support for larger fonts 2589 * is ever implemented. 2590 */ 2591 2592 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags) 2593 { 2594 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2595 unsigned charcount = font->charcount; 2596 int w = font->width; 2597 int h = font->height; 2598 int size; 2599 int i, csum; 2600 u8 *new_data, *data = font->data; 2601 int pitch = (font->width+7) >> 3; 2602 2603 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2604 * If not this check should be changed to charcount < 256 */ 2605 if (charcount != 256 && charcount != 512) 2606 return -EINVAL; 2607 2608 /* Make sure drawing engine can handle the font */ 2609 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2610 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2611 return -EINVAL; 2612 2613 /* Make sure driver can handle the font length */ 2614 if (fbcon_invalid_charcount(info, charcount)) 2615 return -EINVAL; 2616 2617 size = h * pitch * charcount; 2618 2619 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2620 2621 if (!new_data) 2622 return -ENOMEM; 2623 2624 new_data += FONT_EXTRA_WORDS * sizeof(int); 2625 FNTSIZE(new_data) = size; 2626 FNTCHARCNT(new_data) = charcount; 2627 REFCOUNT(new_data) = 0; /* usage counter */ 2628 for (i=0; i< charcount; i++) { 2629 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2630 } 2631 2632 /* Since linux has a nice crc32 function use it for counting font 2633 * checksums. */ 2634 csum = crc32(0, new_data, size); 2635 2636 FNTSUM(new_data) = csum; 2637 /* Check if the same font is on some other console already */ 2638 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2639 struct vc_data *tmp = vc_cons[i].d; 2640 2641 if (fb_display[i].userfont && 2642 fb_display[i].fontdata && 2643 FNTSUM(fb_display[i].fontdata) == csum && 2644 FNTSIZE(fb_display[i].fontdata) == size && 2645 tmp->vc_font.width == w && 2646 !memcmp(fb_display[i].fontdata, new_data, size)) { 2647 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2648 new_data = (u8 *)fb_display[i].fontdata; 2649 break; 2650 } 2651 } 2652 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2653 } 2654 2655 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2656 { 2657 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2658 const struct font_desc *f; 2659 2660 if (!name) 2661 f = get_default_font(info->var.xres, info->var.yres, 2662 info->pixmap.blit_x, info->pixmap.blit_y); 2663 else if (!(f = find_font(name))) 2664 return -ENOENT; 2665 2666 font->width = f->width; 2667 font->height = f->height; 2668 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2669 } 2670 2671 static u16 palette_red[16]; 2672 static u16 palette_green[16]; 2673 static u16 palette_blue[16]; 2674 2675 static struct fb_cmap palette_cmap = { 2676 0, 16, palette_red, palette_green, palette_blue, NULL 2677 }; 2678 2679 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2680 { 2681 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2682 int i, j, k, depth; 2683 u8 val; 2684 2685 if (fbcon_is_inactive(vc, info)) 2686 return; 2687 2688 if (!con_is_visible(vc)) 2689 return; 2690 2691 depth = fb_get_color_depth(&info->var, &info->fix); 2692 if (depth > 3) { 2693 for (i = j = 0; i < 16; i++) { 2694 k = table[i]; 2695 val = vc->vc_palette[j++]; 2696 palette_red[k] = (val << 8) | val; 2697 val = vc->vc_palette[j++]; 2698 palette_green[k] = (val << 8) | val; 2699 val = vc->vc_palette[j++]; 2700 palette_blue[k] = (val << 8) | val; 2701 } 2702 palette_cmap.len = 16; 2703 palette_cmap.start = 0; 2704 /* 2705 * If framebuffer is capable of less than 16 colors, 2706 * use default palette of fbcon. 2707 */ 2708 } else 2709 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2710 2711 fb_set_cmap(&palette_cmap, info); 2712 } 2713 2714 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) 2715 { 2716 unsigned long p; 2717 int line; 2718 2719 if (vc->vc_num != fg_console || !softback_lines) 2720 return (u16 *) (vc->vc_origin + offset); 2721 line = offset / vc->vc_size_row; 2722 if (line >= softback_lines) 2723 return (u16 *) (vc->vc_origin + offset - 2724 softback_lines * vc->vc_size_row); 2725 p = softback_curr + offset; 2726 if (p >= softback_end) 2727 p += softback_buf - softback_end; 2728 return (u16 *) p; 2729 } 2730 2731 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2732 int *px, int *py) 2733 { 2734 unsigned long ret; 2735 int x, y; 2736 2737 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2738 unsigned long offset = (pos - vc->vc_origin) / 2; 2739 2740 x = offset % vc->vc_cols; 2741 y = offset / vc->vc_cols; 2742 if (vc->vc_num == fg_console) 2743 y += softback_lines; 2744 ret = pos + (vc->vc_cols - x) * 2; 2745 } else if (vc->vc_num == fg_console && softback_lines) { 2746 unsigned long offset = pos - softback_curr; 2747 2748 if (pos < softback_curr) 2749 offset += softback_end - softback_buf; 2750 offset /= 2; 2751 x = offset % vc->vc_cols; 2752 y = offset / vc->vc_cols; 2753 ret = pos + (vc->vc_cols - x) * 2; 2754 if (ret == softback_end) 2755 ret = softback_buf; 2756 if (ret == softback_in) 2757 ret = vc->vc_origin; 2758 } else { 2759 /* Should not happen */ 2760 x = y = 0; 2761 ret = vc->vc_origin; 2762 } 2763 if (px) 2764 *px = x; 2765 if (py) 2766 *py = y; 2767 return ret; 2768 } 2769 2770 /* As we might be inside of softback, we may work with non-contiguous buffer, 2771 that's why we have to use a separate routine. */ 2772 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2773 { 2774 while (cnt--) { 2775 u16 a = scr_readw(p); 2776 if (!vc->vc_can_do_color) 2777 a ^= 0x0800; 2778 else if (vc->vc_hi_font_mask == 0x100) 2779 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2780 (((a) & 0x0e00) << 4); 2781 else 2782 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2783 (((a) & 0x0700) << 4); 2784 scr_writew(a, p++); 2785 if (p == (u16 *) softback_end) 2786 p = (u16 *) softback_buf; 2787 if (p == (u16 *) softback_in) 2788 p = (u16 *) vc->vc_origin; 2789 } 2790 } 2791 2792 static void fbcon_scrolldelta(struct vc_data *vc, int lines) 2793 { 2794 struct fb_info *info = registered_fb[con2fb_map[fg_console]]; 2795 struct fbcon_ops *ops = info->fbcon_par; 2796 struct display *disp = &fb_display[fg_console]; 2797 int offset, limit, scrollback_old; 2798 2799 if (softback_top) { 2800 if (vc->vc_num != fg_console) 2801 return; 2802 if (vc->vc_mode != KD_TEXT || !lines) 2803 return; 2804 if (logo_shown >= 0) { 2805 struct vc_data *conp2 = vc_cons[logo_shown].d; 2806 2807 if (conp2->vc_top == logo_lines 2808 && conp2->vc_bottom == conp2->vc_rows) 2809 conp2->vc_top = 0; 2810 if (logo_shown == vc->vc_num) { 2811 unsigned long p, q; 2812 int i; 2813 2814 p = softback_in; 2815 q = vc->vc_origin + 2816 logo_lines * vc->vc_size_row; 2817 for (i = 0; i < logo_lines; i++) { 2818 if (p == softback_top) 2819 break; 2820 if (p == softback_buf) 2821 p = softback_end; 2822 p -= vc->vc_size_row; 2823 q -= vc->vc_size_row; 2824 scr_memcpyw((u16 *) q, (u16 *) p, 2825 vc->vc_size_row); 2826 } 2827 softback_in = softback_curr = p; 2828 update_region(vc, vc->vc_origin, 2829 logo_lines * vc->vc_cols); 2830 } 2831 logo_shown = FBCON_LOGO_CANSHOW; 2832 } 2833 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); 2834 fbcon_redraw_softback(vc, disp, lines); 2835 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); 2836 return; 2837 } 2838 2839 if (!scrollback_phys_max) 2840 return; 2841 2842 scrollback_old = scrollback_current; 2843 scrollback_current -= lines; 2844 if (scrollback_current < 0) 2845 scrollback_current = 0; 2846 else if (scrollback_current > scrollback_max) 2847 scrollback_current = scrollback_max; 2848 if (scrollback_current == scrollback_old) 2849 return; 2850 2851 if (fbcon_is_inactive(vc, info)) 2852 return; 2853 2854 fbcon_cursor(vc, CM_ERASE); 2855 2856 offset = disp->yscroll - scrollback_current; 2857 limit = disp->vrows; 2858 switch (disp->scrollmode) { 2859 case SCROLL_WRAP_MOVE: 2860 info->var.vmode |= FB_VMODE_YWRAP; 2861 break; 2862 case SCROLL_PAN_MOVE: 2863 case SCROLL_PAN_REDRAW: 2864 limit -= vc->vc_rows; 2865 info->var.vmode &= ~FB_VMODE_YWRAP; 2866 break; 2867 } 2868 if (offset < 0) 2869 offset += limit; 2870 else if (offset >= limit) 2871 offset -= limit; 2872 2873 ops->var.xoffset = 0; 2874 ops->var.yoffset = offset * vc->vc_font.height; 2875 ops->update_start(info); 2876 2877 if (!scrollback_current) 2878 fbcon_cursor(vc, CM_DRAW); 2879 } 2880 2881 static int fbcon_set_origin(struct vc_data *vc) 2882 { 2883 if (softback_lines) 2884 fbcon_scrolldelta(vc, softback_lines); 2885 return 0; 2886 } 2887 2888 static void fbcon_suspended(struct fb_info *info) 2889 { 2890 struct vc_data *vc = NULL; 2891 struct fbcon_ops *ops = info->fbcon_par; 2892 2893 if (!ops || ops->currcon < 0) 2894 return; 2895 vc = vc_cons[ops->currcon].d; 2896 2897 /* Clear cursor, restore saved data */ 2898 fbcon_cursor(vc, CM_ERASE); 2899 } 2900 2901 static void fbcon_resumed(struct fb_info *info) 2902 { 2903 struct vc_data *vc; 2904 struct fbcon_ops *ops = info->fbcon_par; 2905 2906 if (!ops || ops->currcon < 0) 2907 return; 2908 vc = vc_cons[ops->currcon].d; 2909 2910 update_screen(vc); 2911 } 2912 2913 static void fbcon_modechanged(struct fb_info *info) 2914 { 2915 struct fbcon_ops *ops = info->fbcon_par; 2916 struct vc_data *vc; 2917 struct display *p; 2918 int rows, cols; 2919 2920 if (!ops || ops->currcon < 0) 2921 return; 2922 vc = vc_cons[ops->currcon].d; 2923 if (vc->vc_mode != KD_TEXT || 2924 registered_fb[con2fb_map[ops->currcon]] != info) 2925 return; 2926 2927 p = &fb_display[vc->vc_num]; 2928 set_blitting_type(vc, info); 2929 2930 if (con_is_visible(vc)) { 2931 var_to_display(p, &info->var, info); 2932 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2933 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2934 cols /= vc->vc_font.width; 2935 rows /= vc->vc_font.height; 2936 vc_resize(vc, cols, rows); 2937 updatescrollmode(p, info, vc); 2938 scrollback_max = 0; 2939 scrollback_current = 0; 2940 2941 if (!fbcon_is_inactive(vc, info)) { 2942 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2943 ops->update_start(info); 2944 } 2945 2946 fbcon_set_palette(vc, color_table); 2947 update_screen(vc); 2948 if (softback_buf) 2949 fbcon_update_softback(vc); 2950 } 2951 } 2952 2953 static void fbcon_set_all_vcs(struct fb_info *info) 2954 { 2955 struct fbcon_ops *ops = info->fbcon_par; 2956 struct vc_data *vc; 2957 struct display *p; 2958 int i, rows, cols, fg = -1; 2959 2960 if (!ops || ops->currcon < 0) 2961 return; 2962 2963 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2964 vc = vc_cons[i].d; 2965 if (!vc || vc->vc_mode != KD_TEXT || 2966 registered_fb[con2fb_map[i]] != info) 2967 continue; 2968 2969 if (con_is_visible(vc)) { 2970 fg = i; 2971 continue; 2972 } 2973 2974 p = &fb_display[vc->vc_num]; 2975 set_blitting_type(vc, info); 2976 var_to_display(p, &info->var, info); 2977 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2978 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2979 cols /= vc->vc_font.width; 2980 rows /= vc->vc_font.height; 2981 vc_resize(vc, cols, rows); 2982 } 2983 2984 if (fg != -1) 2985 fbcon_modechanged(info); 2986 } 2987 2988 static int fbcon_mode_deleted(struct fb_info *info, 2989 struct fb_videomode *mode) 2990 { 2991 struct fb_info *fb_info; 2992 struct display *p; 2993 int i, j, found = 0; 2994 2995 /* before deletion, ensure that mode is not in use */ 2996 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2997 j = con2fb_map[i]; 2998 if (j == -1) 2999 continue; 3000 fb_info = registered_fb[j]; 3001 if (fb_info != info) 3002 continue; 3003 p = &fb_display[i]; 3004 if (!p || !p->mode) 3005 continue; 3006 if (fb_mode_is_equal(p->mode, mode)) { 3007 found = 1; 3008 break; 3009 } 3010 } 3011 return found; 3012 } 3013 3014 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 3015 static int fbcon_unbind(void) 3016 { 3017 int ret; 3018 3019 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 3020 fbcon_is_default); 3021 3022 if (!ret) 3023 fbcon_has_console_bind = 0; 3024 3025 return ret; 3026 } 3027 #else 3028 static inline int fbcon_unbind(void) 3029 { 3030 return -EINVAL; 3031 } 3032 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 3033 3034 /* called with console_lock held */ 3035 static int fbcon_fb_unbind(int idx) 3036 { 3037 int i, new_idx = -1, ret = 0; 3038 3039 if (!fbcon_has_console_bind) 3040 return 0; 3041 3042 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3043 if (con2fb_map[i] != idx && 3044 con2fb_map[i] != -1) { 3045 new_idx = i; 3046 break; 3047 } 3048 } 3049 3050 if (new_idx != -1) { 3051 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3052 if (con2fb_map[i] == idx) 3053 set_con2fb_map(i, new_idx, 0); 3054 } 3055 } else { 3056 struct fb_info *info = registered_fb[idx]; 3057 3058 /* This is sort of like set_con2fb_map, except it maps 3059 * the consoles to no device and then releases the 3060 * oldinfo to free memory and cancel the cursor blink 3061 * timer. I can imagine this just becoming part of 3062 * set_con2fb_map where new_idx is -1 3063 */ 3064 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3065 if (con2fb_map[i] == idx) { 3066 con2fb_map[i] = -1; 3067 if (!search_fb_in_map(idx)) { 3068 ret = con2fb_release_oldinfo(vc_cons[i].d, 3069 info, NULL, i, 3070 idx, 0); 3071 if (ret) { 3072 con2fb_map[i] = idx; 3073 return ret; 3074 } 3075 } 3076 } 3077 } 3078 ret = fbcon_unbind(); 3079 } 3080 3081 return ret; 3082 } 3083 3084 /* called with console_lock held */ 3085 static int fbcon_fb_unregistered(struct fb_info *info) 3086 { 3087 int i, idx; 3088 3089 idx = info->node; 3090 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3091 if (con2fb_map[i] == idx) 3092 con2fb_map[i] = -1; 3093 } 3094 3095 if (idx == info_idx) { 3096 info_idx = -1; 3097 3098 for (i = 0; i < FB_MAX; i++) { 3099 if (registered_fb[i] != NULL) { 3100 info_idx = i; 3101 break; 3102 } 3103 } 3104 } 3105 3106 if (info_idx != -1) { 3107 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3108 if (con2fb_map[i] == -1) 3109 con2fb_map[i] = info_idx; 3110 } 3111 } 3112 3113 if (primary_device == idx) 3114 primary_device = -1; 3115 3116 if (!num_registered_fb) 3117 do_unregister_con_driver(&fb_con); 3118 3119 return 0; 3120 } 3121 3122 /* called with console_lock held */ 3123 static void fbcon_remap_all(int idx) 3124 { 3125 int i; 3126 for (i = first_fb_vc; i <= last_fb_vc; i++) 3127 set_con2fb_map(i, idx, 0); 3128 3129 if (con_is_bound(&fb_con)) { 3130 printk(KERN_INFO "fbcon: Remapping primary device, " 3131 "fb%i, to tty %i-%i\n", idx, 3132 first_fb_vc + 1, last_fb_vc + 1); 3133 info_idx = idx; 3134 } 3135 } 3136 3137 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 3138 static void fbcon_select_primary(struct fb_info *info) 3139 { 3140 if (!map_override && primary_device == -1 && 3141 fb_is_primary_device(info)) { 3142 int i; 3143 3144 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 3145 info->fix.id, info->node); 3146 primary_device = info->node; 3147 3148 for (i = first_fb_vc; i <= last_fb_vc; i++) 3149 con2fb_map_boot[i] = primary_device; 3150 3151 if (con_is_bound(&fb_con)) { 3152 printk(KERN_INFO "fbcon: Remapping primary device, " 3153 "fb%i, to tty %i-%i\n", info->node, 3154 first_fb_vc + 1, last_fb_vc + 1); 3155 info_idx = primary_device; 3156 } 3157 } 3158 3159 } 3160 #else 3161 static inline void fbcon_select_primary(struct fb_info *info) 3162 { 3163 return; 3164 } 3165 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 3166 3167 /* called with console_lock held */ 3168 static int fbcon_fb_registered(struct fb_info *info) 3169 { 3170 int ret = 0, i, idx; 3171 3172 idx = info->node; 3173 fbcon_select_primary(info); 3174 3175 if (info_idx == -1) { 3176 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3177 if (con2fb_map_boot[i] == idx) { 3178 info_idx = idx; 3179 break; 3180 } 3181 } 3182 3183 if (info_idx != -1) 3184 ret = do_fbcon_takeover(1); 3185 } else { 3186 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3187 if (con2fb_map_boot[i] == idx) 3188 set_con2fb_map(i, idx, 0); 3189 } 3190 } 3191 3192 return ret; 3193 } 3194 3195 static void fbcon_fb_blanked(struct fb_info *info, int blank) 3196 { 3197 struct fbcon_ops *ops = info->fbcon_par; 3198 struct vc_data *vc; 3199 3200 if (!ops || ops->currcon < 0) 3201 return; 3202 3203 vc = vc_cons[ops->currcon].d; 3204 if (vc->vc_mode != KD_TEXT || 3205 registered_fb[con2fb_map[ops->currcon]] != info) 3206 return; 3207 3208 if (con_is_visible(vc)) { 3209 if (blank) 3210 do_blank_screen(0); 3211 else 3212 do_unblank_screen(0); 3213 } 3214 ops->blank_state = blank; 3215 } 3216 3217 static void fbcon_new_modelist(struct fb_info *info) 3218 { 3219 int i; 3220 struct vc_data *vc; 3221 struct fb_var_screeninfo var; 3222 const struct fb_videomode *mode; 3223 3224 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3225 if (registered_fb[con2fb_map[i]] != info) 3226 continue; 3227 if (!fb_display[i].mode) 3228 continue; 3229 vc = vc_cons[i].d; 3230 display_to_var(&var, &fb_display[i]); 3231 mode = fb_find_nearest_mode(fb_display[i].mode, 3232 &info->modelist); 3233 fb_videomode_to_var(&var, mode); 3234 fbcon_set_disp(info, &var, vc->vc_num); 3235 } 3236 } 3237 3238 static void fbcon_get_requirement(struct fb_info *info, 3239 struct fb_blit_caps *caps) 3240 { 3241 struct vc_data *vc; 3242 struct display *p; 3243 3244 if (caps->flags) { 3245 int i, charcnt; 3246 3247 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3248 vc = vc_cons[i].d; 3249 if (vc && vc->vc_mode == KD_TEXT && 3250 info->node == con2fb_map[i]) { 3251 p = &fb_display[i]; 3252 caps->x |= 1 << (vc->vc_font.width - 1); 3253 caps->y |= 1 << (vc->vc_font.height - 1); 3254 charcnt = (p->userfont) ? 3255 FNTCHARCNT(p->fontdata) : 256; 3256 if (caps->len < charcnt) 3257 caps->len = charcnt; 3258 } 3259 } 3260 } else { 3261 vc = vc_cons[fg_console].d; 3262 3263 if (vc && vc->vc_mode == KD_TEXT && 3264 info->node == con2fb_map[fg_console]) { 3265 p = &fb_display[fg_console]; 3266 caps->x = 1 << (vc->vc_font.width - 1); 3267 caps->y = 1 << (vc->vc_font.height - 1); 3268 caps->len = (p->userfont) ? 3269 FNTCHARCNT(p->fontdata) : 256; 3270 } 3271 } 3272 } 3273 3274 static int fbcon_event_notify(struct notifier_block *self, 3275 unsigned long action, void *data) 3276 { 3277 struct fb_event *event = data; 3278 struct fb_info *info = event->info; 3279 struct fb_videomode *mode; 3280 struct fb_con2fbmap *con2fb; 3281 struct fb_blit_caps *caps; 3282 int idx, ret = 0; 3283 3284 /* 3285 * ignore all events except driver registration and deregistration 3286 * if fbcon is not active 3287 */ 3288 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED || 3289 action == FB_EVENT_FB_UNREGISTERED)) 3290 goto done; 3291 3292 switch(action) { 3293 case FB_EVENT_SUSPEND: 3294 fbcon_suspended(info); 3295 break; 3296 case FB_EVENT_RESUME: 3297 fbcon_resumed(info); 3298 break; 3299 case FB_EVENT_MODE_CHANGE: 3300 fbcon_modechanged(info); 3301 break; 3302 case FB_EVENT_MODE_CHANGE_ALL: 3303 fbcon_set_all_vcs(info); 3304 break; 3305 case FB_EVENT_MODE_DELETE: 3306 mode = event->data; 3307 ret = fbcon_mode_deleted(info, mode); 3308 break; 3309 case FB_EVENT_FB_UNBIND: 3310 idx = info->node; 3311 ret = fbcon_fb_unbind(idx); 3312 break; 3313 case FB_EVENT_FB_REGISTERED: 3314 ret = fbcon_fb_registered(info); 3315 break; 3316 case FB_EVENT_FB_UNREGISTERED: 3317 ret = fbcon_fb_unregistered(info); 3318 break; 3319 case FB_EVENT_SET_CONSOLE_MAP: 3320 /* called with console lock held */ 3321 con2fb = event->data; 3322 ret = set_con2fb_map(con2fb->console - 1, 3323 con2fb->framebuffer, 1); 3324 break; 3325 case FB_EVENT_GET_CONSOLE_MAP: 3326 con2fb = event->data; 3327 con2fb->framebuffer = con2fb_map[con2fb->console - 1]; 3328 break; 3329 case FB_EVENT_BLANK: 3330 fbcon_fb_blanked(info, *(int *)event->data); 3331 break; 3332 case FB_EVENT_NEW_MODELIST: 3333 fbcon_new_modelist(info); 3334 break; 3335 case FB_EVENT_GET_REQ: 3336 caps = event->data; 3337 fbcon_get_requirement(info, caps); 3338 break; 3339 case FB_EVENT_REMAP_ALL_CONSOLE: 3340 idx = info->node; 3341 fbcon_remap_all(idx); 3342 break; 3343 } 3344 done: 3345 return ret; 3346 } 3347 3348 /* 3349 * The console `switch' structure for the frame buffer based console 3350 */ 3351 3352 static const struct consw fb_con = { 3353 .owner = THIS_MODULE, 3354 .con_startup = fbcon_startup, 3355 .con_init = fbcon_init, 3356 .con_deinit = fbcon_deinit, 3357 .con_clear = fbcon_clear, 3358 .con_putc = fbcon_putc, 3359 .con_putcs = fbcon_putcs, 3360 .con_cursor = fbcon_cursor, 3361 .con_scroll = fbcon_scroll, 3362 .con_switch = fbcon_switch, 3363 .con_blank = fbcon_blank, 3364 .con_font_set = fbcon_set_font, 3365 .con_font_get = fbcon_get_font, 3366 .con_font_default = fbcon_set_def_font, 3367 .con_font_copy = fbcon_copy_font, 3368 .con_set_palette = fbcon_set_palette, 3369 .con_scrolldelta = fbcon_scrolldelta, 3370 .con_set_origin = fbcon_set_origin, 3371 .con_invert_region = fbcon_invert_region, 3372 .con_screen_pos = fbcon_screen_pos, 3373 .con_getxy = fbcon_getxy, 3374 .con_resize = fbcon_resize, 3375 .con_debug_enter = fbcon_debug_enter, 3376 .con_debug_leave = fbcon_debug_leave, 3377 }; 3378 3379 static struct notifier_block fbcon_event_notifier = { 3380 .notifier_call = fbcon_event_notify, 3381 }; 3382 3383 static ssize_t store_rotate(struct device *device, 3384 struct device_attribute *attr, const char *buf, 3385 size_t count) 3386 { 3387 struct fb_info *info; 3388 int rotate, idx; 3389 char **last = NULL; 3390 3391 if (fbcon_has_exited) 3392 return count; 3393 3394 console_lock(); 3395 idx = con2fb_map[fg_console]; 3396 3397 if (idx == -1 || registered_fb[idx] == NULL) 3398 goto err; 3399 3400 info = registered_fb[idx]; 3401 rotate = simple_strtoul(buf, last, 0); 3402 fbcon_rotate(info, rotate); 3403 err: 3404 console_unlock(); 3405 return count; 3406 } 3407 3408 static ssize_t store_rotate_all(struct device *device, 3409 struct device_attribute *attr,const char *buf, 3410 size_t count) 3411 { 3412 struct fb_info *info; 3413 int rotate, idx; 3414 char **last = NULL; 3415 3416 if (fbcon_has_exited) 3417 return count; 3418 3419 console_lock(); 3420 idx = con2fb_map[fg_console]; 3421 3422 if (idx == -1 || registered_fb[idx] == NULL) 3423 goto err; 3424 3425 info = registered_fb[idx]; 3426 rotate = simple_strtoul(buf, last, 0); 3427 fbcon_rotate_all(info, rotate); 3428 err: 3429 console_unlock(); 3430 return count; 3431 } 3432 3433 static ssize_t show_rotate(struct device *device, 3434 struct device_attribute *attr,char *buf) 3435 { 3436 struct fb_info *info; 3437 int rotate = 0, idx; 3438 3439 if (fbcon_has_exited) 3440 return 0; 3441 3442 console_lock(); 3443 idx = con2fb_map[fg_console]; 3444 3445 if (idx == -1 || registered_fb[idx] == NULL) 3446 goto err; 3447 3448 info = registered_fb[idx]; 3449 rotate = fbcon_get_rotate(info); 3450 err: 3451 console_unlock(); 3452 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3453 } 3454 3455 static ssize_t show_cursor_blink(struct device *device, 3456 struct device_attribute *attr, char *buf) 3457 { 3458 struct fb_info *info; 3459 struct fbcon_ops *ops; 3460 int idx, blink = -1; 3461 3462 if (fbcon_has_exited) 3463 return 0; 3464 3465 console_lock(); 3466 idx = con2fb_map[fg_console]; 3467 3468 if (idx == -1 || registered_fb[idx] == NULL) 3469 goto err; 3470 3471 info = registered_fb[idx]; 3472 ops = info->fbcon_par; 3473 3474 if (!ops) 3475 goto err; 3476 3477 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3478 err: 3479 console_unlock(); 3480 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3481 } 3482 3483 static ssize_t store_cursor_blink(struct device *device, 3484 struct device_attribute *attr, 3485 const char *buf, size_t count) 3486 { 3487 struct fb_info *info; 3488 int blink, idx; 3489 char **last = NULL; 3490 3491 if (fbcon_has_exited) 3492 return count; 3493 3494 console_lock(); 3495 idx = con2fb_map[fg_console]; 3496 3497 if (idx == -1 || registered_fb[idx] == NULL) 3498 goto err; 3499 3500 info = registered_fb[idx]; 3501 3502 if (!info->fbcon_par) 3503 goto err; 3504 3505 blink = simple_strtoul(buf, last, 0); 3506 3507 if (blink) { 3508 fbcon_cursor_noblink = 0; 3509 fbcon_add_cursor_timer(info); 3510 } else { 3511 fbcon_cursor_noblink = 1; 3512 fbcon_del_cursor_timer(info); 3513 } 3514 3515 err: 3516 console_unlock(); 3517 return count; 3518 } 3519 3520 static struct device_attribute device_attrs[] = { 3521 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3522 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3523 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3524 store_cursor_blink), 3525 }; 3526 3527 static int fbcon_init_device(void) 3528 { 3529 int i, error = 0; 3530 3531 fbcon_has_sysfs = 1; 3532 3533 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3534 error = device_create_file(fbcon_device, &device_attrs[i]); 3535 3536 if (error) 3537 break; 3538 } 3539 3540 if (error) { 3541 while (--i >= 0) 3542 device_remove_file(fbcon_device, &device_attrs[i]); 3543 3544 fbcon_has_sysfs = 0; 3545 } 3546 3547 return 0; 3548 } 3549 3550 static void fbcon_start(void) 3551 { 3552 if (num_registered_fb) { 3553 int i; 3554 3555 console_lock(); 3556 3557 for (i = 0; i < FB_MAX; i++) { 3558 if (registered_fb[i] != NULL) { 3559 info_idx = i; 3560 break; 3561 } 3562 } 3563 3564 do_fbcon_takeover(0); 3565 console_unlock(); 3566 3567 } 3568 } 3569 3570 static void fbcon_exit(void) 3571 { 3572 struct fb_info *info; 3573 int i, j, mapped; 3574 3575 if (fbcon_has_exited) 3576 return; 3577 3578 kfree((void *)softback_buf); 3579 softback_buf = 0UL; 3580 3581 for (i = 0; i < FB_MAX; i++) { 3582 int pending = 0; 3583 3584 mapped = 0; 3585 info = registered_fb[i]; 3586 3587 if (info == NULL) 3588 continue; 3589 3590 if (info->queue.func) 3591 pending = cancel_work_sync(&info->queue); 3592 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3593 "no")); 3594 3595 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3596 if (con2fb_map[j] == i) { 3597 mapped = 1; 3598 break; 3599 } 3600 } 3601 3602 if (mapped) { 3603 if (info->fbops->fb_release) 3604 info->fbops->fb_release(info, 0); 3605 module_put(info->fbops->owner); 3606 3607 if (info->fbcon_par) { 3608 struct fbcon_ops *ops = info->fbcon_par; 3609 3610 fbcon_del_cursor_timer(info); 3611 kfree(ops->cursor_src); 3612 kfree(ops->cursor_state.mask); 3613 kfree(info->fbcon_par); 3614 info->fbcon_par = NULL; 3615 } 3616 3617 if (info->queue.func == fb_flashcursor) 3618 info->queue.func = NULL; 3619 } 3620 } 3621 3622 fbcon_has_exited = 1; 3623 } 3624 3625 void __init fb_console_init(void) 3626 { 3627 int i; 3628 3629 console_lock(); 3630 fb_register_client(&fbcon_event_notifier); 3631 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3632 "fbcon"); 3633 3634 if (IS_ERR(fbcon_device)) { 3635 printk(KERN_WARNING "Unable to create device " 3636 "for fbcon; errno = %ld\n", 3637 PTR_ERR(fbcon_device)); 3638 fbcon_device = NULL; 3639 } else 3640 fbcon_init_device(); 3641 3642 for (i = 0; i < MAX_NR_CONSOLES; i++) 3643 con2fb_map[i] = -1; 3644 3645 console_unlock(); 3646 fbcon_start(); 3647 } 3648 3649 #ifdef MODULE 3650 3651 static void __exit fbcon_deinit_device(void) 3652 { 3653 int i; 3654 3655 if (fbcon_has_sysfs) { 3656 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3657 device_remove_file(fbcon_device, &device_attrs[i]); 3658 3659 fbcon_has_sysfs = 0; 3660 } 3661 } 3662 3663 void __exit fb_console_exit(void) 3664 { 3665 console_lock(); 3666 fb_unregister_client(&fbcon_event_notifier); 3667 fbcon_deinit_device(); 3668 device_destroy(fb_class, MKDEV(0, 0)); 3669 fbcon_exit(); 3670 do_unregister_con_driver(&fb_con); 3671 console_unlock(); 3672 } 3673 #endif 3674