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(array3_size(logo_lines, new_cols, 2), 595 GFP_KERNEL); 596 if (save) { 597 int i = cols < new_cols ? cols : new_cols; 598 scr_memsetw(save, erase, logo_lines * new_cols * 2); 599 r = q - step; 600 for (cnt = 0; cnt < logo_lines; cnt++, r += i) 601 scr_memcpyw(save + cnt * new_cols, r, 2 * i); 602 r = q; 603 } 604 } 605 if (r == q) { 606 /* We can scroll screen down */ 607 r = q - step - cols; 608 for (cnt = rows - logo_lines; cnt > 0; cnt--) { 609 scr_memcpyw(r + step, r, vc->vc_size_row); 610 r -= cols; 611 } 612 if (!save) { 613 int lines; 614 if (vc->vc_y + logo_lines >= rows) 615 lines = rows - vc->vc_y - 1; 616 else 617 lines = logo_lines; 618 vc->vc_y += lines; 619 vc->vc_pos += lines * vc->vc_size_row; 620 } 621 } 622 scr_memsetw((unsigned short *) vc->vc_origin, 623 erase, 624 vc->vc_size_row * logo_lines); 625 626 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 627 fbcon_clear_margins(vc, 0); 628 update_screen(vc); 629 } 630 631 if (save) { 632 q = (unsigned short *) (vc->vc_origin + 633 vc->vc_size_row * 634 rows); 635 scr_memcpyw(q, save, logo_lines * new_cols * 2); 636 vc->vc_y += logo_lines; 637 vc->vc_pos += logo_lines * vc->vc_size_row; 638 kfree(save); 639 } 640 641 if (logo_lines > vc->vc_bottom) { 642 logo_shown = FBCON_LOGO_CANSHOW; 643 printk(KERN_INFO 644 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 645 } else if (logo_shown != FBCON_LOGO_DONTSHOW) { 646 logo_shown = FBCON_LOGO_DRAW; 647 vc->vc_top = logo_lines; 648 } 649 } 650 #endif /* MODULE */ 651 652 #ifdef CONFIG_FB_TILEBLITTING 653 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 654 { 655 struct fbcon_ops *ops = info->fbcon_par; 656 657 ops->p = &fb_display[vc->vc_num]; 658 659 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 660 fbcon_set_tileops(vc, info); 661 else { 662 fbcon_set_rotation(info); 663 fbcon_set_bitops(ops); 664 } 665 } 666 667 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 668 { 669 int err = 0; 670 671 if (info->flags & FBINFO_MISC_TILEBLITTING && 672 info->tileops->fb_get_tilemax(info) < charcount) 673 err = 1; 674 675 return err; 676 } 677 #else 678 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 679 { 680 struct fbcon_ops *ops = info->fbcon_par; 681 682 info->flags &= ~FBINFO_MISC_TILEBLITTING; 683 ops->p = &fb_display[vc->vc_num]; 684 fbcon_set_rotation(info); 685 fbcon_set_bitops(ops); 686 } 687 688 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 689 { 690 return 0; 691 } 692 693 #endif /* CONFIG_MISC_TILEBLITTING */ 694 695 696 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 697 int unit, int oldidx) 698 { 699 struct fbcon_ops *ops = NULL; 700 int err = 0; 701 702 if (!try_module_get(info->fbops->owner)) 703 err = -ENODEV; 704 705 if (!err && info->fbops->fb_open && 706 info->fbops->fb_open(info, 0)) 707 err = -ENODEV; 708 709 if (!err) { 710 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 711 if (!ops) 712 err = -ENOMEM; 713 } 714 715 if (!err) { 716 ops->cur_blink_jiffies = HZ / 5; 717 ops->info = info; 718 info->fbcon_par = ops; 719 720 if (vc) 721 set_blitting_type(vc, info); 722 } 723 724 if (err) { 725 con2fb_map[unit] = oldidx; 726 module_put(info->fbops->owner); 727 } 728 729 return err; 730 } 731 732 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 733 struct fb_info *newinfo, int unit, 734 int oldidx, int found) 735 { 736 struct fbcon_ops *ops = oldinfo->fbcon_par; 737 int err = 0, ret; 738 739 if (oldinfo->fbops->fb_release && 740 oldinfo->fbops->fb_release(oldinfo, 0)) { 741 con2fb_map[unit] = oldidx; 742 if (!found && newinfo->fbops->fb_release) 743 newinfo->fbops->fb_release(newinfo, 0); 744 if (!found) 745 module_put(newinfo->fbops->owner); 746 err = -ENODEV; 747 } 748 749 if (!err) { 750 fbcon_del_cursor_timer(oldinfo); 751 kfree(ops->cursor_state.mask); 752 kfree(ops->cursor_data); 753 kfree(ops->cursor_src); 754 kfree(ops->fontbuffer); 755 kfree(oldinfo->fbcon_par); 756 oldinfo->fbcon_par = NULL; 757 module_put(oldinfo->fbops->owner); 758 /* 759 If oldinfo and newinfo are driving the same hardware, 760 the fb_release() method of oldinfo may attempt to 761 restore the hardware state. This will leave the 762 newinfo in an undefined state. Thus, a call to 763 fb_set_par() may be needed for the newinfo. 764 */ 765 if (newinfo && newinfo->fbops->fb_set_par) { 766 ret = newinfo->fbops->fb_set_par(newinfo); 767 768 if (ret) 769 printk(KERN_ERR "con2fb_release_oldinfo: " 770 "detected unhandled fb_set_par error, " 771 "error code %d\n", ret); 772 } 773 } 774 775 return err; 776 } 777 778 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 779 int unit, int show_logo) 780 { 781 struct fbcon_ops *ops = info->fbcon_par; 782 int ret; 783 784 ops->currcon = fg_console; 785 786 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 787 ret = info->fbops->fb_set_par(info); 788 789 if (ret) 790 printk(KERN_ERR "con2fb_init_display: detected " 791 "unhandled fb_set_par error, " 792 "error code %d\n", ret); 793 } 794 795 ops->flags |= FBCON_FLAGS_INIT; 796 ops->graphics = 0; 797 fbcon_set_disp(info, &info->var, unit); 798 799 if (show_logo) { 800 struct vc_data *fg_vc = vc_cons[fg_console].d; 801 struct fb_info *fg_info = 802 registered_fb[con2fb_map[fg_console]]; 803 804 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 805 fg_vc->vc_rows, fg_vc->vc_cols, 806 fg_vc->vc_rows); 807 } 808 809 update_screen(vc_cons[fg_console].d); 810 } 811 812 /** 813 * set_con2fb_map - map console to frame buffer device 814 * @unit: virtual console number to map 815 * @newidx: frame buffer index to map virtual console to 816 * @user: user request 817 * 818 * Maps a virtual console @unit to a frame buffer device 819 * @newidx. 820 * 821 * This should be called with the console lock held. 822 */ 823 static int set_con2fb_map(int unit, int newidx, int user) 824 { 825 struct vc_data *vc = vc_cons[unit].d; 826 int oldidx = con2fb_map[unit]; 827 struct fb_info *info = registered_fb[newidx]; 828 struct fb_info *oldinfo = NULL; 829 int found, err = 0; 830 831 if (oldidx == newidx) 832 return 0; 833 834 if (!info) 835 return -EINVAL; 836 837 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 838 info_idx = newidx; 839 return do_fbcon_takeover(0); 840 } 841 842 if (oldidx != -1) 843 oldinfo = registered_fb[oldidx]; 844 845 found = search_fb_in_map(newidx); 846 847 con2fb_map[unit] = newidx; 848 if (!err && !found) 849 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 850 851 852 /* 853 * If old fb is not mapped to any of the consoles, 854 * fbcon should release it. 855 */ 856 if (!err && oldinfo && !search_fb_in_map(oldidx)) 857 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 858 found); 859 860 if (!err) { 861 int show_logo = (fg_console == 0 && !user && 862 logo_shown != FBCON_LOGO_DONTSHOW); 863 864 if (!found) 865 fbcon_add_cursor_timer(info); 866 con2fb_map_boot[unit] = newidx; 867 con2fb_init_display(vc, info, unit, show_logo); 868 } 869 870 if (!search_fb_in_map(info_idx)) 871 info_idx = newidx; 872 873 return err; 874 } 875 876 /* 877 * Low Level Operations 878 */ 879 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 880 static int var_to_display(struct display *disp, 881 struct fb_var_screeninfo *var, 882 struct fb_info *info) 883 { 884 disp->xres_virtual = var->xres_virtual; 885 disp->yres_virtual = var->yres_virtual; 886 disp->bits_per_pixel = var->bits_per_pixel; 887 disp->grayscale = var->grayscale; 888 disp->nonstd = var->nonstd; 889 disp->accel_flags = var->accel_flags; 890 disp->height = var->height; 891 disp->width = var->width; 892 disp->red = var->red; 893 disp->green = var->green; 894 disp->blue = var->blue; 895 disp->transp = var->transp; 896 disp->rotate = var->rotate; 897 disp->mode = fb_match_mode(var, &info->modelist); 898 if (disp->mode == NULL) 899 /* This should not happen */ 900 return -EINVAL; 901 return 0; 902 } 903 904 static void display_to_var(struct fb_var_screeninfo *var, 905 struct display *disp) 906 { 907 fb_videomode_to_var(var, disp->mode); 908 var->xres_virtual = disp->xres_virtual; 909 var->yres_virtual = disp->yres_virtual; 910 var->bits_per_pixel = disp->bits_per_pixel; 911 var->grayscale = disp->grayscale; 912 var->nonstd = disp->nonstd; 913 var->accel_flags = disp->accel_flags; 914 var->height = disp->height; 915 var->width = disp->width; 916 var->red = disp->red; 917 var->green = disp->green; 918 var->blue = disp->blue; 919 var->transp = disp->transp; 920 var->rotate = disp->rotate; 921 } 922 923 static const char *fbcon_startup(void) 924 { 925 const char *display_desc = "frame buffer device"; 926 struct display *p = &fb_display[fg_console]; 927 struct vc_data *vc = vc_cons[fg_console].d; 928 const struct font_desc *font = NULL; 929 struct module *owner; 930 struct fb_info *info = NULL; 931 struct fbcon_ops *ops; 932 int rows, cols; 933 934 /* 935 * If num_registered_fb is zero, this is a call for the dummy part. 936 * The frame buffer devices weren't initialized yet. 937 */ 938 if (!num_registered_fb || info_idx == -1) 939 return display_desc; 940 /* 941 * Instead of blindly using registered_fb[0], we use info_idx, set by 942 * fb_console_init(); 943 */ 944 info = registered_fb[info_idx]; 945 if (!info) 946 return NULL; 947 948 owner = info->fbops->owner; 949 if (!try_module_get(owner)) 950 return NULL; 951 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 952 module_put(owner); 953 return NULL; 954 } 955 956 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 957 if (!ops) { 958 module_put(owner); 959 return NULL; 960 } 961 962 ops->currcon = -1; 963 ops->graphics = 1; 964 ops->cur_rotate = -1; 965 ops->cur_blink_jiffies = HZ / 5; 966 ops->info = info; 967 info->fbcon_par = ops; 968 969 p->con_rotate = initial_rotation; 970 if (p->con_rotate == -1) 971 p->con_rotate = info->fbcon_rotate_hint; 972 if (p->con_rotate == -1) 973 p->con_rotate = FB_ROTATE_UR; 974 975 set_blitting_type(vc, info); 976 977 if (info->fix.type != FB_TYPE_TEXT) { 978 if (fbcon_softback_size) { 979 if (!softback_buf) { 980 softback_buf = 981 (unsigned long) 982 kmalloc(fbcon_softback_size, 983 GFP_KERNEL); 984 if (!softback_buf) { 985 fbcon_softback_size = 0; 986 softback_top = 0; 987 } 988 } 989 } else { 990 if (softback_buf) { 991 kfree((void *) softback_buf); 992 softback_buf = 0; 993 softback_top = 0; 994 } 995 } 996 if (softback_buf) 997 softback_in = softback_top = softback_curr = 998 softback_buf; 999 softback_lines = 0; 1000 } 1001 1002 /* Setup default font */ 1003 if (!p->fontdata && !vc->vc_font.data) { 1004 if (!fontname[0] || !(font = find_font(fontname))) 1005 font = get_default_font(info->var.xres, 1006 info->var.yres, 1007 info->pixmap.blit_x, 1008 info->pixmap.blit_y); 1009 vc->vc_font.width = font->width; 1010 vc->vc_font.height = font->height; 1011 vc->vc_font.data = (void *)(p->fontdata = font->data); 1012 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1013 } else { 1014 p->fontdata = vc->vc_font.data; 1015 } 1016 1017 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1018 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1019 cols /= vc->vc_font.width; 1020 rows /= vc->vc_font.height; 1021 vc_resize(vc, cols, rows); 1022 1023 DPRINTK("mode: %s\n", info->fix.id); 1024 DPRINTK("visual: %d\n", info->fix.visual); 1025 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1026 info->var.yres, 1027 info->var.bits_per_pixel); 1028 1029 fbcon_add_cursor_timer(info); 1030 fbcon_has_exited = 0; 1031 return display_desc; 1032 } 1033 1034 static void fbcon_init(struct vc_data *vc, int init) 1035 { 1036 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1037 struct fbcon_ops *ops; 1038 struct vc_data **default_mode = vc->vc_display_fg; 1039 struct vc_data *svc = *default_mode; 1040 struct display *t, *p = &fb_display[vc->vc_num]; 1041 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1042 int cap, ret; 1043 1044 if (info_idx == -1 || info == NULL) 1045 return; 1046 1047 cap = info->flags; 1048 1049 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1050 (info->fix.type == FB_TYPE_TEXT)) 1051 logo = 0; 1052 1053 if (var_to_display(p, &info->var, info)) 1054 return; 1055 1056 if (!info->fbcon_par) 1057 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1058 1059 /* If we are not the first console on this 1060 fb, copy the font from that console */ 1061 t = &fb_display[fg_console]; 1062 if (!p->fontdata) { 1063 if (t->fontdata) { 1064 struct vc_data *fvc = vc_cons[fg_console].d; 1065 1066 vc->vc_font.data = (void *)(p->fontdata = 1067 fvc->vc_font.data); 1068 vc->vc_font.width = fvc->vc_font.width; 1069 vc->vc_font.height = fvc->vc_font.height; 1070 p->userfont = t->userfont; 1071 1072 if (p->userfont) 1073 REFCOUNT(p->fontdata)++; 1074 } else { 1075 const struct font_desc *font = NULL; 1076 1077 if (!fontname[0] || !(font = find_font(fontname))) 1078 font = get_default_font(info->var.xres, 1079 info->var.yres, 1080 info->pixmap.blit_x, 1081 info->pixmap.blit_y); 1082 vc->vc_font.width = font->width; 1083 vc->vc_font.height = font->height; 1084 vc->vc_font.data = (void *)(p->fontdata = font->data); 1085 vc->vc_font.charcount = 256; /* FIXME Need to 1086 support more fonts */ 1087 } 1088 } 1089 1090 if (p->userfont) 1091 charcnt = FNTCHARCNT(p->fontdata); 1092 1093 vc->vc_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT); 1094 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1095 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1096 if (charcnt == 256) { 1097 vc->vc_hi_font_mask = 0; 1098 } else { 1099 vc->vc_hi_font_mask = 0x100; 1100 if (vc->vc_can_do_color) 1101 vc->vc_complement_mask <<= 1; 1102 } 1103 1104 if (!*svc->vc_uni_pagedir_loc) 1105 con_set_default_unimap(svc); 1106 if (!*vc->vc_uni_pagedir_loc) 1107 con_copy_unimap(vc, svc); 1108 1109 ops = info->fbcon_par; 1110 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1111 1112 p->con_rotate = initial_rotation; 1113 if (p->con_rotate == -1) 1114 p->con_rotate = info->fbcon_rotate_hint; 1115 if (p->con_rotate == -1) 1116 p->con_rotate = FB_ROTATE_UR; 1117 1118 set_blitting_type(vc, info); 1119 1120 cols = vc->vc_cols; 1121 rows = vc->vc_rows; 1122 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1123 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1124 new_cols /= vc->vc_font.width; 1125 new_rows /= vc->vc_font.height; 1126 1127 /* 1128 * We must always set the mode. The mode of the previous console 1129 * driver could be in the same resolution but we are using different 1130 * hardware so we have to initialize the hardware. 1131 * 1132 * We need to do it in fbcon_init() to prevent screen corruption. 1133 */ 1134 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1135 if (info->fbops->fb_set_par && 1136 !(ops->flags & FBCON_FLAGS_INIT)) { 1137 ret = info->fbops->fb_set_par(info); 1138 1139 if (ret) 1140 printk(KERN_ERR "fbcon_init: detected " 1141 "unhandled fb_set_par error, " 1142 "error code %d\n", ret); 1143 } 1144 1145 ops->flags |= FBCON_FLAGS_INIT; 1146 } 1147 1148 ops->graphics = 0; 1149 1150 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1151 !(cap & FBINFO_HWACCEL_DISABLED)) 1152 p->scrollmode = SCROLL_MOVE; 1153 else /* default to something safe */ 1154 p->scrollmode = SCROLL_REDRAW; 1155 1156 /* 1157 * ++guenther: console.c:vc_allocate() relies on initializing 1158 * vc_{cols,rows}, but we must not set those if we are only 1159 * resizing the console. 1160 */ 1161 if (init) { 1162 vc->vc_cols = new_cols; 1163 vc->vc_rows = new_rows; 1164 } else 1165 vc_resize(vc, new_cols, new_rows); 1166 1167 if (logo) 1168 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1169 1170 if (vc == svc && softback_buf) 1171 fbcon_update_softback(vc); 1172 1173 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1174 ops->rotate = FB_ROTATE_UR; 1175 set_blitting_type(vc, info); 1176 } 1177 1178 ops->p = &fb_display[fg_console]; 1179 } 1180 1181 static void fbcon_free_font(struct display *p, bool freefont) 1182 { 1183 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1184 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1185 p->fontdata = NULL; 1186 p->userfont = 0; 1187 } 1188 1189 static void set_vc_hi_font(struct vc_data *vc, bool set); 1190 1191 static void fbcon_deinit(struct vc_data *vc) 1192 { 1193 struct display *p = &fb_display[vc->vc_num]; 1194 struct fb_info *info; 1195 struct fbcon_ops *ops; 1196 int idx; 1197 bool free_font = true; 1198 1199 idx = con2fb_map[vc->vc_num]; 1200 1201 if (idx == -1) 1202 goto finished; 1203 1204 info = registered_fb[idx]; 1205 1206 if (!info) 1207 goto finished; 1208 1209 if (info->flags & FBINFO_MISC_FIRMWARE) 1210 free_font = false; 1211 ops = info->fbcon_par; 1212 1213 if (!ops) 1214 goto finished; 1215 1216 if (con_is_visible(vc)) 1217 fbcon_del_cursor_timer(info); 1218 1219 ops->flags &= ~FBCON_FLAGS_INIT; 1220 finished: 1221 1222 fbcon_free_font(p, free_font); 1223 if (free_font) 1224 vc->vc_font.data = NULL; 1225 1226 if (vc->vc_hi_font_mask) 1227 set_vc_hi_font(vc, false); 1228 1229 if (!con_is_bound(&fb_con)) 1230 fbcon_exit(); 1231 1232 return; 1233 } 1234 1235 /* ====================================================================== */ 1236 1237 /* fbcon_XXX routines - interface used by the world 1238 * 1239 * This system is now divided into two levels because of complications 1240 * caused by hardware scrolling. Top level functions: 1241 * 1242 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1243 * 1244 * handles y values in range [0, scr_height-1] that correspond to real 1245 * screen positions. y_wrap shift means that first line of bitmap may be 1246 * anywhere on this display. These functions convert lineoffsets to 1247 * bitmap offsets and deal with the wrap-around case by splitting blits. 1248 * 1249 * fbcon_bmove_physical_8() -- These functions fast implementations 1250 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1251 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1252 * 1253 * WARNING: 1254 * 1255 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1256 * Implies should only really hardware scroll in rows. Only reason for 1257 * restriction is simplicity & efficiency at the moment. 1258 */ 1259 1260 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1261 int width) 1262 { 1263 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1264 struct fbcon_ops *ops = info->fbcon_par; 1265 1266 struct display *p = &fb_display[vc->vc_num]; 1267 u_int y_break; 1268 1269 if (fbcon_is_inactive(vc, info)) 1270 return; 1271 1272 if (!height || !width) 1273 return; 1274 1275 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1276 vc->vc_top = 0; 1277 /* 1278 * If the font dimensions are not an integral of the display 1279 * dimensions then the ops->clear below won't end up clearing 1280 * the margins. Call clear_margins here in case the logo 1281 * bitmap stretched into the margin area. 1282 */ 1283 fbcon_clear_margins(vc, 0); 1284 } 1285 1286 /* Split blits that cross physical y_wrap boundary */ 1287 1288 y_break = p->vrows - p->yscroll; 1289 if (sy < y_break && sy + height - 1 >= y_break) { 1290 u_int b = y_break - sy; 1291 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1292 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1293 width); 1294 } else 1295 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1296 } 1297 1298 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1299 int count, int ypos, int xpos) 1300 { 1301 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1302 struct display *p = &fb_display[vc->vc_num]; 1303 struct fbcon_ops *ops = info->fbcon_par; 1304 1305 if (!fbcon_is_inactive(vc, info)) 1306 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1307 get_color(vc, info, scr_readw(s), 1), 1308 get_color(vc, info, scr_readw(s), 0)); 1309 } 1310 1311 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1312 { 1313 unsigned short chr; 1314 1315 scr_writew(c, &chr); 1316 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1317 } 1318 1319 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1320 { 1321 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1322 struct fbcon_ops *ops = info->fbcon_par; 1323 1324 if (!fbcon_is_inactive(vc, info)) 1325 ops->clear_margins(vc, info, margin_color, bottom_only); 1326 } 1327 1328 static void fbcon_cursor(struct vc_data *vc, int mode) 1329 { 1330 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1331 struct fbcon_ops *ops = info->fbcon_par; 1332 int y; 1333 int c = scr_readw((u16 *) vc->vc_pos); 1334 1335 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1336 1337 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1338 return; 1339 1340 if (vc->vc_cursor_type & 0x10) 1341 fbcon_del_cursor_timer(info); 1342 else 1343 fbcon_add_cursor_timer(info); 1344 1345 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1346 if (mode & CM_SOFTBACK) { 1347 mode &= ~CM_SOFTBACK; 1348 y = softback_lines; 1349 } else { 1350 if (softback_lines) 1351 fbcon_set_origin(vc); 1352 y = 0; 1353 } 1354 1355 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), 1356 get_color(vc, info, c, 0)); 1357 } 1358 1359 static int scrollback_phys_max = 0; 1360 static int scrollback_max = 0; 1361 static int scrollback_current = 0; 1362 1363 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1364 int unit) 1365 { 1366 struct display *p, *t; 1367 struct vc_data **default_mode, *vc; 1368 struct vc_data *svc; 1369 struct fbcon_ops *ops = info->fbcon_par; 1370 int rows, cols, charcnt = 256; 1371 1372 p = &fb_display[unit]; 1373 1374 if (var_to_display(p, var, info)) 1375 return; 1376 1377 vc = vc_cons[unit].d; 1378 1379 if (!vc) 1380 return; 1381 1382 default_mode = vc->vc_display_fg; 1383 svc = *default_mode; 1384 t = &fb_display[svc->vc_num]; 1385 1386 if (!vc->vc_font.data) { 1387 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1388 vc->vc_font.width = (*default_mode)->vc_font.width; 1389 vc->vc_font.height = (*default_mode)->vc_font.height; 1390 p->userfont = t->userfont; 1391 if (p->userfont) 1392 REFCOUNT(p->fontdata)++; 1393 } 1394 if (p->userfont) 1395 charcnt = FNTCHARCNT(p->fontdata); 1396 1397 var->activate = FB_ACTIVATE_NOW; 1398 info->var.activate = var->activate; 1399 var->yoffset = info->var.yoffset; 1400 var->xoffset = info->var.xoffset; 1401 fb_set_var(info, var); 1402 ops->var = info->var; 1403 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1404 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1405 if (charcnt == 256) { 1406 vc->vc_hi_font_mask = 0; 1407 } else { 1408 vc->vc_hi_font_mask = 0x100; 1409 if (vc->vc_can_do_color) 1410 vc->vc_complement_mask <<= 1; 1411 } 1412 1413 if (!*svc->vc_uni_pagedir_loc) 1414 con_set_default_unimap(svc); 1415 if (!*vc->vc_uni_pagedir_loc) 1416 con_copy_unimap(vc, svc); 1417 1418 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1419 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1420 cols /= vc->vc_font.width; 1421 rows /= vc->vc_font.height; 1422 vc_resize(vc, cols, rows); 1423 1424 if (con_is_visible(vc)) { 1425 update_screen(vc); 1426 if (softback_buf) 1427 fbcon_update_softback(vc); 1428 } 1429 } 1430 1431 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1432 { 1433 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1434 struct fbcon_ops *ops = info->fbcon_par; 1435 struct display *p = &fb_display[vc->vc_num]; 1436 1437 p->yscroll += count; 1438 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1439 p->yscroll -= p->vrows; 1440 ops->var.xoffset = 0; 1441 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1442 ops->var.vmode |= FB_VMODE_YWRAP; 1443 ops->update_start(info); 1444 scrollback_max += count; 1445 if (scrollback_max > scrollback_phys_max) 1446 scrollback_max = scrollback_phys_max; 1447 scrollback_current = 0; 1448 } 1449 1450 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1451 { 1452 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1453 struct fbcon_ops *ops = info->fbcon_par; 1454 struct display *p = &fb_display[vc->vc_num]; 1455 1456 p->yscroll -= count; 1457 if (p->yscroll < 0) /* Deal with wrap */ 1458 p->yscroll += p->vrows; 1459 ops->var.xoffset = 0; 1460 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1461 ops->var.vmode |= FB_VMODE_YWRAP; 1462 ops->update_start(info); 1463 scrollback_max -= count; 1464 if (scrollback_max < 0) 1465 scrollback_max = 0; 1466 scrollback_current = 0; 1467 } 1468 1469 static __inline__ void ypan_up(struct vc_data *vc, int count) 1470 { 1471 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1472 struct display *p = &fb_display[vc->vc_num]; 1473 struct fbcon_ops *ops = info->fbcon_par; 1474 1475 p->yscroll += count; 1476 if (p->yscroll > p->vrows - vc->vc_rows) { 1477 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1478 0, 0, 0, vc->vc_rows, vc->vc_cols); 1479 p->yscroll -= p->vrows - vc->vc_rows; 1480 } 1481 1482 ops->var.xoffset = 0; 1483 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1484 ops->var.vmode &= ~FB_VMODE_YWRAP; 1485 ops->update_start(info); 1486 fbcon_clear_margins(vc, 1); 1487 scrollback_max += count; 1488 if (scrollback_max > scrollback_phys_max) 1489 scrollback_max = scrollback_phys_max; 1490 scrollback_current = 0; 1491 } 1492 1493 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1494 { 1495 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1496 struct fbcon_ops *ops = info->fbcon_par; 1497 struct display *p = &fb_display[vc->vc_num]; 1498 1499 p->yscroll += count; 1500 1501 if (p->yscroll > p->vrows - vc->vc_rows) { 1502 p->yscroll -= p->vrows - vc->vc_rows; 1503 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1504 } 1505 1506 ops->var.xoffset = 0; 1507 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1508 ops->var.vmode &= ~FB_VMODE_YWRAP; 1509 ops->update_start(info); 1510 fbcon_clear_margins(vc, 1); 1511 scrollback_max += count; 1512 if (scrollback_max > scrollback_phys_max) 1513 scrollback_max = scrollback_phys_max; 1514 scrollback_current = 0; 1515 } 1516 1517 static __inline__ void ypan_down(struct vc_data *vc, int count) 1518 { 1519 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1520 struct display *p = &fb_display[vc->vc_num]; 1521 struct fbcon_ops *ops = info->fbcon_par; 1522 1523 p->yscroll -= count; 1524 if (p->yscroll < 0) { 1525 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1526 0, vc->vc_rows, vc->vc_cols); 1527 p->yscroll += p->vrows - vc->vc_rows; 1528 } 1529 1530 ops->var.xoffset = 0; 1531 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1532 ops->var.vmode &= ~FB_VMODE_YWRAP; 1533 ops->update_start(info); 1534 fbcon_clear_margins(vc, 1); 1535 scrollback_max -= count; 1536 if (scrollback_max < 0) 1537 scrollback_max = 0; 1538 scrollback_current = 0; 1539 } 1540 1541 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1542 { 1543 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1544 struct fbcon_ops *ops = info->fbcon_par; 1545 struct display *p = &fb_display[vc->vc_num]; 1546 1547 p->yscroll -= count; 1548 1549 if (p->yscroll < 0) { 1550 p->yscroll += p->vrows - vc->vc_rows; 1551 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1552 } 1553 1554 ops->var.xoffset = 0; 1555 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1556 ops->var.vmode &= ~FB_VMODE_YWRAP; 1557 ops->update_start(info); 1558 fbcon_clear_margins(vc, 1); 1559 scrollback_max -= count; 1560 if (scrollback_max < 0) 1561 scrollback_max = 0; 1562 scrollback_current = 0; 1563 } 1564 1565 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, 1566 long delta) 1567 { 1568 int count = vc->vc_rows; 1569 unsigned short *d, *s; 1570 unsigned long n; 1571 int line = 0; 1572 1573 d = (u16 *) softback_curr; 1574 if (d == (u16 *) softback_in) 1575 d = (u16 *) vc->vc_origin; 1576 n = softback_curr + delta * vc->vc_size_row; 1577 softback_lines -= delta; 1578 if (delta < 0) { 1579 if (softback_curr < softback_top && n < softback_buf) { 1580 n += softback_end - softback_buf; 1581 if (n < softback_top) { 1582 softback_lines -= 1583 (softback_top - n) / vc->vc_size_row; 1584 n = softback_top; 1585 } 1586 } else if (softback_curr >= softback_top 1587 && n < softback_top) { 1588 softback_lines -= 1589 (softback_top - n) / vc->vc_size_row; 1590 n = softback_top; 1591 } 1592 } else { 1593 if (softback_curr > softback_in && n >= softback_end) { 1594 n += softback_buf - softback_end; 1595 if (n > softback_in) { 1596 n = softback_in; 1597 softback_lines = 0; 1598 } 1599 } else if (softback_curr <= softback_in && n > softback_in) { 1600 n = softback_in; 1601 softback_lines = 0; 1602 } 1603 } 1604 if (n == softback_curr) 1605 return; 1606 softback_curr = n; 1607 s = (u16 *) softback_curr; 1608 if (s == (u16 *) softback_in) 1609 s = (u16 *) vc->vc_origin; 1610 while (count--) { 1611 unsigned short *start; 1612 unsigned short *le; 1613 unsigned short c; 1614 int x = 0; 1615 unsigned short attr = 1; 1616 1617 start = s; 1618 le = advance_row(s, 1); 1619 do { 1620 c = scr_readw(s); 1621 if (attr != (c & 0xff00)) { 1622 attr = c & 0xff00; 1623 if (s > start) { 1624 fbcon_putcs(vc, start, s - start, 1625 line, x); 1626 x += s - start; 1627 start = s; 1628 } 1629 } 1630 if (c == scr_readw(d)) { 1631 if (s > start) { 1632 fbcon_putcs(vc, start, s - start, 1633 line, x); 1634 x += s - start + 1; 1635 start = s + 1; 1636 } else { 1637 x++; 1638 start++; 1639 } 1640 } 1641 s++; 1642 d++; 1643 } while (s < le); 1644 if (s > start) 1645 fbcon_putcs(vc, start, s - start, line, x); 1646 line++; 1647 if (d == (u16 *) softback_end) 1648 d = (u16 *) softback_buf; 1649 if (d == (u16 *) softback_in) 1650 d = (u16 *) vc->vc_origin; 1651 if (s == (u16 *) softback_end) 1652 s = (u16 *) softback_buf; 1653 if (s == (u16 *) softback_in) 1654 s = (u16 *) vc->vc_origin; 1655 } 1656 } 1657 1658 static void fbcon_redraw_move(struct vc_data *vc, struct display *p, 1659 int line, int count, int dy) 1660 { 1661 unsigned short *s = (unsigned short *) 1662 (vc->vc_origin + vc->vc_size_row * line); 1663 1664 while (count--) { 1665 unsigned short *start = s; 1666 unsigned short *le = advance_row(s, 1); 1667 unsigned short c; 1668 int x = 0; 1669 unsigned short attr = 1; 1670 1671 do { 1672 c = scr_readw(s); 1673 if (attr != (c & 0xff00)) { 1674 attr = c & 0xff00; 1675 if (s > start) { 1676 fbcon_putcs(vc, start, s - start, 1677 dy, x); 1678 x += s - start; 1679 start = s; 1680 } 1681 } 1682 console_conditional_schedule(); 1683 s++; 1684 } while (s < le); 1685 if (s > start) 1686 fbcon_putcs(vc, start, s - start, dy, x); 1687 console_conditional_schedule(); 1688 dy++; 1689 } 1690 } 1691 1692 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1693 struct display *p, int line, int count, int ycount) 1694 { 1695 int offset = ycount * vc->vc_cols; 1696 unsigned short *d = (unsigned short *) 1697 (vc->vc_origin + vc->vc_size_row * line); 1698 unsigned short *s = d + offset; 1699 struct fbcon_ops *ops = info->fbcon_par; 1700 1701 while (count--) { 1702 unsigned short *start = s; 1703 unsigned short *le = advance_row(s, 1); 1704 unsigned short c; 1705 int x = 0; 1706 1707 do { 1708 c = scr_readw(s); 1709 1710 if (c == scr_readw(d)) { 1711 if (s > start) { 1712 ops->bmove(vc, info, line + ycount, x, 1713 line, x, 1, s-start); 1714 x += s - start + 1; 1715 start = s + 1; 1716 } else { 1717 x++; 1718 start++; 1719 } 1720 } 1721 1722 scr_writew(c, d); 1723 console_conditional_schedule(); 1724 s++; 1725 d++; 1726 } while (s < le); 1727 if (s > start) 1728 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1729 s-start); 1730 console_conditional_schedule(); 1731 if (ycount > 0) 1732 line++; 1733 else { 1734 line--; 1735 /* NOTE: We subtract two lines from these pointers */ 1736 s -= vc->vc_size_row; 1737 d -= vc->vc_size_row; 1738 } 1739 } 1740 } 1741 1742 static void fbcon_redraw(struct vc_data *vc, struct display *p, 1743 int line, int count, int offset) 1744 { 1745 unsigned short *d = (unsigned short *) 1746 (vc->vc_origin + vc->vc_size_row * line); 1747 unsigned short *s = d + offset; 1748 1749 while (count--) { 1750 unsigned short *start = s; 1751 unsigned short *le = advance_row(s, 1); 1752 unsigned short c; 1753 int x = 0; 1754 unsigned short attr = 1; 1755 1756 do { 1757 c = scr_readw(s); 1758 if (attr != (c & 0xff00)) { 1759 attr = c & 0xff00; 1760 if (s > start) { 1761 fbcon_putcs(vc, start, s - start, 1762 line, x); 1763 x += s - start; 1764 start = s; 1765 } 1766 } 1767 if (c == scr_readw(d)) { 1768 if (s > start) { 1769 fbcon_putcs(vc, start, s - start, 1770 line, x); 1771 x += s - start + 1; 1772 start = s + 1; 1773 } else { 1774 x++; 1775 start++; 1776 } 1777 } 1778 scr_writew(c, d); 1779 console_conditional_schedule(); 1780 s++; 1781 d++; 1782 } while (s < le); 1783 if (s > start) 1784 fbcon_putcs(vc, start, s - start, line, x); 1785 console_conditional_schedule(); 1786 if (offset > 0) 1787 line++; 1788 else { 1789 line--; 1790 /* NOTE: We subtract two lines from these pointers */ 1791 s -= vc->vc_size_row; 1792 d -= vc->vc_size_row; 1793 } 1794 } 1795 } 1796 1797 static inline void fbcon_softback_note(struct vc_data *vc, int t, 1798 int count) 1799 { 1800 unsigned short *p; 1801 1802 if (vc->vc_num != fg_console) 1803 return; 1804 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); 1805 1806 while (count) { 1807 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); 1808 count--; 1809 p = advance_row(p, 1); 1810 softback_in += vc->vc_size_row; 1811 if (softback_in == softback_end) 1812 softback_in = softback_buf; 1813 if (softback_in == softback_top) { 1814 softback_top += vc->vc_size_row; 1815 if (softback_top == softback_end) 1816 softback_top = softback_buf; 1817 } 1818 } 1819 softback_curr = softback_in; 1820 } 1821 1822 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1823 enum con_scroll dir, unsigned int count) 1824 { 1825 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1826 struct display *p = &fb_display[vc->vc_num]; 1827 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1828 1829 if (fbcon_is_inactive(vc, info)) 1830 return true; 1831 1832 fbcon_cursor(vc, CM_ERASE); 1833 1834 /* 1835 * ++Geert: Only use ywrap/ypan if the console is in text mode 1836 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1837 * whole screen (prevents flicker). 1838 */ 1839 1840 switch (dir) { 1841 case SM_UP: 1842 if (count > vc->vc_rows) /* Maximum realistic size */ 1843 count = vc->vc_rows; 1844 if (softback_top) 1845 fbcon_softback_note(vc, t, count); 1846 if (logo_shown >= 0) 1847 goto redraw_up; 1848 switch (p->scrollmode) { 1849 case SCROLL_MOVE: 1850 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1851 count); 1852 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1853 scr_memsetw((unsigned short *) (vc->vc_origin + 1854 vc->vc_size_row * 1855 (b - count)), 1856 vc->vc_video_erase_char, 1857 vc->vc_size_row * count); 1858 return true; 1859 break; 1860 1861 case SCROLL_WRAP_MOVE: 1862 if (b - t - count > 3 * vc->vc_rows >> 2) { 1863 if (t > 0) 1864 fbcon_bmove(vc, 0, 0, count, 0, t, 1865 vc->vc_cols); 1866 ywrap_up(vc, count); 1867 if (vc->vc_rows - b > 0) 1868 fbcon_bmove(vc, b - count, 0, b, 0, 1869 vc->vc_rows - b, 1870 vc->vc_cols); 1871 } else if (info->flags & FBINFO_READS_FAST) 1872 fbcon_bmove(vc, t + count, 0, t, 0, 1873 b - t - count, vc->vc_cols); 1874 else 1875 goto redraw_up; 1876 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1877 break; 1878 1879 case SCROLL_PAN_REDRAW: 1880 if ((p->yscroll + count <= 1881 2 * (p->vrows - vc->vc_rows)) 1882 && ((!scroll_partial && (b - t == vc->vc_rows)) 1883 || (scroll_partial 1884 && (b - t - count > 1885 3 * vc->vc_rows >> 2)))) { 1886 if (t > 0) 1887 fbcon_redraw_move(vc, p, 0, t, count); 1888 ypan_up_redraw(vc, t, count); 1889 if (vc->vc_rows - b > 0) 1890 fbcon_redraw_move(vc, p, b, 1891 vc->vc_rows - b, b); 1892 } else 1893 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1894 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1895 break; 1896 1897 case SCROLL_PAN_MOVE: 1898 if ((p->yscroll + count <= 1899 2 * (p->vrows - vc->vc_rows)) 1900 && ((!scroll_partial && (b - t == vc->vc_rows)) 1901 || (scroll_partial 1902 && (b - t - count > 1903 3 * vc->vc_rows >> 2)))) { 1904 if (t > 0) 1905 fbcon_bmove(vc, 0, 0, count, 0, t, 1906 vc->vc_cols); 1907 ypan_up(vc, count); 1908 if (vc->vc_rows - b > 0) 1909 fbcon_bmove(vc, b - count, 0, b, 0, 1910 vc->vc_rows - b, 1911 vc->vc_cols); 1912 } else if (info->flags & FBINFO_READS_FAST) 1913 fbcon_bmove(vc, t + count, 0, t, 0, 1914 b - t - count, vc->vc_cols); 1915 else 1916 goto redraw_up; 1917 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1918 break; 1919 1920 case SCROLL_REDRAW: 1921 redraw_up: 1922 fbcon_redraw(vc, p, t, b - t - count, 1923 count * vc->vc_cols); 1924 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1925 scr_memsetw((unsigned short *) (vc->vc_origin + 1926 vc->vc_size_row * 1927 (b - count)), 1928 vc->vc_video_erase_char, 1929 vc->vc_size_row * count); 1930 return true; 1931 } 1932 break; 1933 1934 case SM_DOWN: 1935 if (count > vc->vc_rows) /* Maximum realistic size */ 1936 count = vc->vc_rows; 1937 if (logo_shown >= 0) 1938 goto redraw_down; 1939 switch (p->scrollmode) { 1940 case SCROLL_MOVE: 1941 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1942 -count); 1943 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1944 scr_memsetw((unsigned short *) (vc->vc_origin + 1945 vc->vc_size_row * 1946 t), 1947 vc->vc_video_erase_char, 1948 vc->vc_size_row * count); 1949 return true; 1950 break; 1951 1952 case SCROLL_WRAP_MOVE: 1953 if (b - t - count > 3 * vc->vc_rows >> 2) { 1954 if (vc->vc_rows - b > 0) 1955 fbcon_bmove(vc, b, 0, b - count, 0, 1956 vc->vc_rows - b, 1957 vc->vc_cols); 1958 ywrap_down(vc, count); 1959 if (t > 0) 1960 fbcon_bmove(vc, count, 0, 0, 0, t, 1961 vc->vc_cols); 1962 } else if (info->flags & FBINFO_READS_FAST) 1963 fbcon_bmove(vc, t, 0, t + count, 0, 1964 b - t - count, vc->vc_cols); 1965 else 1966 goto redraw_down; 1967 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1968 break; 1969 1970 case SCROLL_PAN_MOVE: 1971 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1972 && ((!scroll_partial && (b - t == vc->vc_rows)) 1973 || (scroll_partial 1974 && (b - t - count > 1975 3 * vc->vc_rows >> 2)))) { 1976 if (vc->vc_rows - b > 0) 1977 fbcon_bmove(vc, b, 0, b - count, 0, 1978 vc->vc_rows - b, 1979 vc->vc_cols); 1980 ypan_down(vc, count); 1981 if (t > 0) 1982 fbcon_bmove(vc, count, 0, 0, 0, t, 1983 vc->vc_cols); 1984 } else if (info->flags & FBINFO_READS_FAST) 1985 fbcon_bmove(vc, t, 0, t + count, 0, 1986 b - t - count, vc->vc_cols); 1987 else 1988 goto redraw_down; 1989 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1990 break; 1991 1992 case SCROLL_PAN_REDRAW: 1993 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1994 && ((!scroll_partial && (b - t == vc->vc_rows)) 1995 || (scroll_partial 1996 && (b - t - count > 1997 3 * vc->vc_rows >> 2)))) { 1998 if (vc->vc_rows - b > 0) 1999 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 2000 b - count); 2001 ypan_down_redraw(vc, t, count); 2002 if (t > 0) 2003 fbcon_redraw_move(vc, p, count, t, 0); 2004 } else 2005 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 2006 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2007 break; 2008 2009 case SCROLL_REDRAW: 2010 redraw_down: 2011 fbcon_redraw(vc, p, b - 1, b - t - count, 2012 -count * vc->vc_cols); 2013 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2014 scr_memsetw((unsigned short *) (vc->vc_origin + 2015 vc->vc_size_row * 2016 t), 2017 vc->vc_video_erase_char, 2018 vc->vc_size_row * count); 2019 return true; 2020 } 2021 } 2022 return false; 2023 } 2024 2025 2026 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 2027 int height, int width) 2028 { 2029 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2030 struct display *p = &fb_display[vc->vc_num]; 2031 2032 if (fbcon_is_inactive(vc, info)) 2033 return; 2034 2035 if (!width || !height) 2036 return; 2037 2038 /* Split blits that cross physical y_wrap case. 2039 * Pathological case involves 4 blits, better to use recursive 2040 * code rather than unrolled case 2041 * 2042 * Recursive invocations don't need to erase the cursor over and 2043 * over again, so we use fbcon_bmove_rec() 2044 */ 2045 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 2046 p->vrows - p->yscroll); 2047 } 2048 2049 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, 2050 int dy, int dx, int height, int width, u_int y_break) 2051 { 2052 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2053 struct fbcon_ops *ops = info->fbcon_par; 2054 u_int b; 2055 2056 if (sy < y_break && sy + height > y_break) { 2057 b = y_break - sy; 2058 if (dy < sy) { /* Avoid trashing self */ 2059 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2060 y_break); 2061 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2062 height - b, width, y_break); 2063 } else { 2064 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2065 height - b, width, y_break); 2066 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2067 y_break); 2068 } 2069 return; 2070 } 2071 2072 if (dy < y_break && dy + height > y_break) { 2073 b = y_break - dy; 2074 if (dy < sy) { /* Avoid trashing self */ 2075 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2076 y_break); 2077 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2078 height - b, width, y_break); 2079 } else { 2080 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2081 height - b, width, y_break); 2082 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2083 y_break); 2084 } 2085 return; 2086 } 2087 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 2088 height, width); 2089 } 2090 2091 static void updatescrollmode(struct display *p, 2092 struct fb_info *info, 2093 struct vc_data *vc) 2094 { 2095 struct fbcon_ops *ops = info->fbcon_par; 2096 int fh = vc->vc_font.height; 2097 int cap = info->flags; 2098 u16 t = 0; 2099 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 2100 info->fix.xpanstep); 2101 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 2102 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2103 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 2104 info->var.xres_virtual); 2105 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 2106 divides(ypan, vc->vc_font.height) && vyres > yres; 2107 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 2108 divides(ywrap, vc->vc_font.height) && 2109 divides(vc->vc_font.height, vyres) && 2110 divides(vc->vc_font.height, yres); 2111 int reading_fast = cap & FBINFO_READS_FAST; 2112 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 2113 !(cap & FBINFO_HWACCEL_DISABLED); 2114 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 2115 !(cap & FBINFO_HWACCEL_DISABLED); 2116 2117 p->vrows = vyres/fh; 2118 if (yres > (fh * (vc->vc_rows + 1))) 2119 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 2120 if ((yres % fh) && (vyres % fh < yres % fh)) 2121 p->vrows--; 2122 2123 if (good_wrap || good_pan) { 2124 if (reading_fast || fast_copyarea) 2125 p->scrollmode = good_wrap ? 2126 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 2127 else 2128 p->scrollmode = good_wrap ? SCROLL_REDRAW : 2129 SCROLL_PAN_REDRAW; 2130 } else { 2131 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2132 p->scrollmode = SCROLL_MOVE; 2133 else 2134 p->scrollmode = SCROLL_REDRAW; 2135 } 2136 } 2137 2138 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2139 unsigned int height, unsigned int user) 2140 { 2141 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2142 struct fbcon_ops *ops = info->fbcon_par; 2143 struct display *p = &fb_display[vc->vc_num]; 2144 struct fb_var_screeninfo var = info->var; 2145 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2146 2147 virt_w = FBCON_SWAP(ops->rotate, width, height); 2148 virt_h = FBCON_SWAP(ops->rotate, height, width); 2149 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2150 vc->vc_font.height); 2151 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2152 vc->vc_font.width); 2153 var.xres = virt_w * virt_fw; 2154 var.yres = virt_h * virt_fh; 2155 x_diff = info->var.xres - var.xres; 2156 y_diff = info->var.yres - var.yres; 2157 if (x_diff < 0 || x_diff > virt_fw || 2158 y_diff < 0 || y_diff > virt_fh) { 2159 const struct fb_videomode *mode; 2160 2161 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2162 mode = fb_find_best_mode(&var, &info->modelist); 2163 if (mode == NULL) 2164 return -EINVAL; 2165 display_to_var(&var, p); 2166 fb_videomode_to_var(&var, mode); 2167 2168 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2169 return -EINVAL; 2170 2171 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2172 if (con_is_visible(vc)) { 2173 var.activate = FB_ACTIVATE_NOW | 2174 FB_ACTIVATE_FORCE; 2175 fb_set_var(info, &var); 2176 } 2177 var_to_display(p, &info->var, info); 2178 ops->var = info->var; 2179 } 2180 updatescrollmode(p, info, vc); 2181 return 0; 2182 } 2183 2184 static int fbcon_switch(struct vc_data *vc) 2185 { 2186 struct fb_info *info, *old_info = NULL; 2187 struct fbcon_ops *ops; 2188 struct display *p = &fb_display[vc->vc_num]; 2189 struct fb_var_screeninfo var; 2190 int i, ret, prev_console, charcnt = 256; 2191 2192 info = registered_fb[con2fb_map[vc->vc_num]]; 2193 ops = info->fbcon_par; 2194 2195 if (softback_top) { 2196 if (softback_lines) 2197 fbcon_set_origin(vc); 2198 softback_top = softback_curr = softback_in = softback_buf; 2199 softback_lines = 0; 2200 fbcon_update_softback(vc); 2201 } 2202 2203 if (logo_shown >= 0) { 2204 struct vc_data *conp2 = vc_cons[logo_shown].d; 2205 2206 if (conp2->vc_top == logo_lines 2207 && conp2->vc_bottom == conp2->vc_rows) 2208 conp2->vc_top = 0; 2209 logo_shown = FBCON_LOGO_CANSHOW; 2210 } 2211 2212 prev_console = ops->currcon; 2213 if (prev_console != -1) 2214 old_info = registered_fb[con2fb_map[prev_console]]; 2215 /* 2216 * FIXME: If we have multiple fbdev's loaded, we need to 2217 * update all info->currcon. Perhaps, we can place this 2218 * in a centralized structure, but this might break some 2219 * drivers. 2220 * 2221 * info->currcon = vc->vc_num; 2222 */ 2223 for (i = 0; i < FB_MAX; i++) { 2224 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) { 2225 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2226 2227 o->currcon = vc->vc_num; 2228 } 2229 } 2230 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2231 display_to_var(&var, p); 2232 var.activate = FB_ACTIVATE_NOW; 2233 2234 /* 2235 * make sure we don't unnecessarily trip the memcmp() 2236 * in fb_set_var() 2237 */ 2238 info->var.activate = var.activate; 2239 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2240 fb_set_var(info, &var); 2241 ops->var = info->var; 2242 2243 if (old_info != NULL && (old_info != info || 2244 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2245 if (info->fbops->fb_set_par) { 2246 ret = info->fbops->fb_set_par(info); 2247 2248 if (ret) 2249 printk(KERN_ERR "fbcon_switch: detected " 2250 "unhandled fb_set_par error, " 2251 "error code %d\n", ret); 2252 } 2253 2254 if (old_info != info) 2255 fbcon_del_cursor_timer(old_info); 2256 } 2257 2258 if (fbcon_is_inactive(vc, info) || 2259 ops->blank_state != FB_BLANK_UNBLANK) 2260 fbcon_del_cursor_timer(info); 2261 else 2262 fbcon_add_cursor_timer(info); 2263 2264 set_blitting_type(vc, info); 2265 ops->cursor_reset = 1; 2266 2267 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2268 ops->rotate = FB_ROTATE_UR; 2269 set_blitting_type(vc, info); 2270 } 2271 2272 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2273 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2274 2275 if (p->userfont) 2276 charcnt = FNTCHARCNT(vc->vc_font.data); 2277 2278 if (charcnt > 256) 2279 vc->vc_complement_mask <<= 1; 2280 2281 updatescrollmode(p, info, vc); 2282 2283 switch (p->scrollmode) { 2284 case SCROLL_WRAP_MOVE: 2285 scrollback_phys_max = p->vrows - vc->vc_rows; 2286 break; 2287 case SCROLL_PAN_MOVE: 2288 case SCROLL_PAN_REDRAW: 2289 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2290 if (scrollback_phys_max < 0) 2291 scrollback_phys_max = 0; 2292 break; 2293 default: 2294 scrollback_phys_max = 0; 2295 break; 2296 } 2297 2298 scrollback_max = 0; 2299 scrollback_current = 0; 2300 2301 if (!fbcon_is_inactive(vc, info)) { 2302 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2303 ops->update_start(info); 2304 } 2305 2306 fbcon_set_palette(vc, color_table); 2307 fbcon_clear_margins(vc, 0); 2308 2309 if (logo_shown == FBCON_LOGO_DRAW) { 2310 2311 logo_shown = fg_console; 2312 /* This is protected above by initmem_freed */ 2313 fb_show_logo(info, ops->rotate); 2314 update_region(vc, 2315 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2316 vc->vc_size_row * (vc->vc_bottom - 2317 vc->vc_top) / 2); 2318 return 0; 2319 } 2320 return 1; 2321 } 2322 2323 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2324 int blank) 2325 { 2326 struct fb_event event; 2327 2328 if (blank) { 2329 unsigned short charmask = vc->vc_hi_font_mask ? 2330 0x1ff : 0xff; 2331 unsigned short oldc; 2332 2333 oldc = vc->vc_video_erase_char; 2334 vc->vc_video_erase_char &= charmask; 2335 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2336 vc->vc_video_erase_char = oldc; 2337 } 2338 2339 2340 if (!lock_fb_info(info)) 2341 return; 2342 event.info = info; 2343 event.data = ␣ 2344 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event); 2345 unlock_fb_info(info); 2346 } 2347 2348 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2349 { 2350 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2351 struct fbcon_ops *ops = info->fbcon_par; 2352 2353 if (mode_switch) { 2354 struct fb_var_screeninfo var = info->var; 2355 2356 ops->graphics = 1; 2357 2358 if (!blank) { 2359 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; 2360 fb_set_var(info, &var); 2361 ops->graphics = 0; 2362 ops->var = info->var; 2363 } 2364 } 2365 2366 if (!fbcon_is_inactive(vc, info)) { 2367 if (ops->blank_state != blank) { 2368 ops->blank_state = blank; 2369 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2370 ops->cursor_flash = (!blank); 2371 2372 if (!(info->flags & FBINFO_MISC_USEREVENT)) 2373 if (fb_blank(info, blank)) 2374 fbcon_generic_blank(vc, info, blank); 2375 } 2376 2377 if (!blank) 2378 update_screen(vc); 2379 } 2380 2381 if (mode_switch || fbcon_is_inactive(vc, info) || 2382 ops->blank_state != FB_BLANK_UNBLANK) 2383 fbcon_del_cursor_timer(info); 2384 else 2385 fbcon_add_cursor_timer(info); 2386 2387 return 0; 2388 } 2389 2390 static int fbcon_debug_enter(struct vc_data *vc) 2391 { 2392 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2393 struct fbcon_ops *ops = info->fbcon_par; 2394 2395 ops->save_graphics = ops->graphics; 2396 ops->graphics = 0; 2397 if (info->fbops->fb_debug_enter) 2398 info->fbops->fb_debug_enter(info); 2399 fbcon_set_palette(vc, color_table); 2400 return 0; 2401 } 2402 2403 static int fbcon_debug_leave(struct vc_data *vc) 2404 { 2405 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2406 struct fbcon_ops *ops = info->fbcon_par; 2407 2408 ops->graphics = ops->save_graphics; 2409 if (info->fbops->fb_debug_leave) 2410 info->fbops->fb_debug_leave(info); 2411 return 0; 2412 } 2413 2414 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2415 { 2416 u8 *fontdata = vc->vc_font.data; 2417 u8 *data = font->data; 2418 int i, j; 2419 2420 font->width = vc->vc_font.width; 2421 font->height = vc->vc_font.height; 2422 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2423 if (!font->data) 2424 return 0; 2425 2426 if (font->width <= 8) { 2427 j = vc->vc_font.height; 2428 for (i = 0; i < font->charcount; i++) { 2429 memcpy(data, fontdata, j); 2430 memset(data + j, 0, 32 - j); 2431 data += 32; 2432 fontdata += j; 2433 } 2434 } else if (font->width <= 16) { 2435 j = vc->vc_font.height * 2; 2436 for (i = 0; i < font->charcount; i++) { 2437 memcpy(data, fontdata, j); 2438 memset(data + j, 0, 64 - j); 2439 data += 64; 2440 fontdata += j; 2441 } 2442 } else if (font->width <= 24) { 2443 for (i = 0; i < font->charcount; i++) { 2444 for (j = 0; j < vc->vc_font.height; j++) { 2445 *data++ = fontdata[0]; 2446 *data++ = fontdata[1]; 2447 *data++ = fontdata[2]; 2448 fontdata += sizeof(u32); 2449 } 2450 memset(data, 0, 3 * (32 - j)); 2451 data += 3 * (32 - j); 2452 } 2453 } else { 2454 j = vc->vc_font.height * 4; 2455 for (i = 0; i < font->charcount; i++) { 2456 memcpy(data, fontdata, j); 2457 memset(data + j, 0, 128 - j); 2458 data += 128; 2459 fontdata += j; 2460 } 2461 } 2462 return 0; 2463 } 2464 2465 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2466 static void set_vc_hi_font(struct vc_data *vc, bool set) 2467 { 2468 if (!set) { 2469 vc->vc_hi_font_mask = 0; 2470 if (vc->vc_can_do_color) { 2471 vc->vc_complement_mask >>= 1; 2472 vc->vc_s_complement_mask >>= 1; 2473 } 2474 2475 /* ++Edmund: reorder the attribute bits */ 2476 if (vc->vc_can_do_color) { 2477 unsigned short *cp = 2478 (unsigned short *) vc->vc_origin; 2479 int count = vc->vc_screenbuf_size / 2; 2480 unsigned short c; 2481 for (; count > 0; count--, cp++) { 2482 c = scr_readw(cp); 2483 scr_writew(((c & 0xfe00) >> 1) | 2484 (c & 0xff), cp); 2485 } 2486 c = vc->vc_video_erase_char; 2487 vc->vc_video_erase_char = 2488 ((c & 0xfe00) >> 1) | (c & 0xff); 2489 vc->vc_attr >>= 1; 2490 } 2491 } else { 2492 vc->vc_hi_font_mask = 0x100; 2493 if (vc->vc_can_do_color) { 2494 vc->vc_complement_mask <<= 1; 2495 vc->vc_s_complement_mask <<= 1; 2496 } 2497 2498 /* ++Edmund: reorder the attribute bits */ 2499 { 2500 unsigned short *cp = 2501 (unsigned short *) vc->vc_origin; 2502 int count = vc->vc_screenbuf_size / 2; 2503 unsigned short c; 2504 for (; count > 0; count--, cp++) { 2505 unsigned short newc; 2506 c = scr_readw(cp); 2507 if (vc->vc_can_do_color) 2508 newc = 2509 ((c & 0xff00) << 1) | (c & 2510 0xff); 2511 else 2512 newc = c & ~0x100; 2513 scr_writew(newc, cp); 2514 } 2515 c = vc->vc_video_erase_char; 2516 if (vc->vc_can_do_color) { 2517 vc->vc_video_erase_char = 2518 ((c & 0xff00) << 1) | (c & 0xff); 2519 vc->vc_attr <<= 1; 2520 } else 2521 vc->vc_video_erase_char = c & ~0x100; 2522 } 2523 } 2524 } 2525 2526 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2527 const u8 * data, int userfont) 2528 { 2529 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2530 struct fbcon_ops *ops = info->fbcon_par; 2531 struct display *p = &fb_display[vc->vc_num]; 2532 int resize; 2533 int cnt; 2534 char *old_data = NULL; 2535 2536 if (con_is_visible(vc) && softback_lines) 2537 fbcon_set_origin(vc); 2538 2539 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2540 if (p->userfont) 2541 old_data = vc->vc_font.data; 2542 if (userfont) 2543 cnt = FNTCHARCNT(data); 2544 else 2545 cnt = 256; 2546 vc->vc_font.data = (void *)(p->fontdata = data); 2547 if ((p->userfont = userfont)) 2548 REFCOUNT(data)++; 2549 vc->vc_font.width = w; 2550 vc->vc_font.height = h; 2551 if (vc->vc_hi_font_mask && cnt == 256) 2552 set_vc_hi_font(vc, false); 2553 else if (!vc->vc_hi_font_mask && cnt == 512) 2554 set_vc_hi_font(vc, true); 2555 2556 if (resize) { 2557 int cols, rows; 2558 2559 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2560 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2561 cols /= w; 2562 rows /= h; 2563 vc_resize(vc, cols, rows); 2564 if (con_is_visible(vc) && softback_buf) 2565 fbcon_update_softback(vc); 2566 } else if (con_is_visible(vc) 2567 && vc->vc_mode == KD_TEXT) { 2568 fbcon_clear_margins(vc, 0); 2569 update_screen(vc); 2570 } 2571 2572 if (old_data && (--REFCOUNT(old_data) == 0)) 2573 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2574 return 0; 2575 } 2576 2577 static int fbcon_copy_font(struct vc_data *vc, int con) 2578 { 2579 struct display *od = &fb_display[con]; 2580 struct console_font *f = &vc->vc_font; 2581 2582 if (od->fontdata == f->data) 2583 return 0; /* already the same font... */ 2584 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2585 } 2586 2587 /* 2588 * User asked to set font; we are guaranteed that 2589 * a) width and height are in range 1..32 2590 * b) charcount does not exceed 512 2591 * but lets not assume that, since someone might someday want to use larger 2592 * fonts. And charcount of 512 is small for unicode support. 2593 * 2594 * However, user space gives the font in 32 rows , regardless of 2595 * actual font height. So a new API is needed if support for larger fonts 2596 * is ever implemented. 2597 */ 2598 2599 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, 2600 unsigned int flags) 2601 { 2602 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2603 unsigned charcount = font->charcount; 2604 int w = font->width; 2605 int h = font->height; 2606 int size; 2607 int i, csum; 2608 u8 *new_data, *data = font->data; 2609 int pitch = (font->width+7) >> 3; 2610 2611 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2612 * If not this check should be changed to charcount < 256 */ 2613 if (charcount != 256 && charcount != 512) 2614 return -EINVAL; 2615 2616 /* Make sure drawing engine can handle the font */ 2617 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2618 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2619 return -EINVAL; 2620 2621 /* Make sure driver can handle the font length */ 2622 if (fbcon_invalid_charcount(info, charcount)) 2623 return -EINVAL; 2624 2625 size = h * pitch * charcount; 2626 2627 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2628 2629 if (!new_data) 2630 return -ENOMEM; 2631 2632 new_data += FONT_EXTRA_WORDS * sizeof(int); 2633 FNTSIZE(new_data) = size; 2634 FNTCHARCNT(new_data) = charcount; 2635 REFCOUNT(new_data) = 0; /* usage counter */ 2636 for (i=0; i< charcount; i++) { 2637 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2638 } 2639 2640 /* Since linux has a nice crc32 function use it for counting font 2641 * checksums. */ 2642 csum = crc32(0, new_data, size); 2643 2644 FNTSUM(new_data) = csum; 2645 /* Check if the same font is on some other console already */ 2646 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2647 struct vc_data *tmp = vc_cons[i].d; 2648 2649 if (fb_display[i].userfont && 2650 fb_display[i].fontdata && 2651 FNTSUM(fb_display[i].fontdata) == csum && 2652 FNTSIZE(fb_display[i].fontdata) == size && 2653 tmp->vc_font.width == w && 2654 !memcmp(fb_display[i].fontdata, new_data, size)) { 2655 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2656 new_data = (u8 *)fb_display[i].fontdata; 2657 break; 2658 } 2659 } 2660 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2661 } 2662 2663 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2664 { 2665 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2666 const struct font_desc *f; 2667 2668 if (!name) 2669 f = get_default_font(info->var.xres, info->var.yres, 2670 info->pixmap.blit_x, info->pixmap.blit_y); 2671 else if (!(f = find_font(name))) 2672 return -ENOENT; 2673 2674 font->width = f->width; 2675 font->height = f->height; 2676 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2677 } 2678 2679 static u16 palette_red[16]; 2680 static u16 palette_green[16]; 2681 static u16 palette_blue[16]; 2682 2683 static struct fb_cmap palette_cmap = { 2684 0, 16, palette_red, palette_green, palette_blue, NULL 2685 }; 2686 2687 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2688 { 2689 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2690 int i, j, k, depth; 2691 u8 val; 2692 2693 if (fbcon_is_inactive(vc, info)) 2694 return; 2695 2696 if (!con_is_visible(vc)) 2697 return; 2698 2699 depth = fb_get_color_depth(&info->var, &info->fix); 2700 if (depth > 3) { 2701 for (i = j = 0; i < 16; i++) { 2702 k = table[i]; 2703 val = vc->vc_palette[j++]; 2704 palette_red[k] = (val << 8) | val; 2705 val = vc->vc_palette[j++]; 2706 palette_green[k] = (val << 8) | val; 2707 val = vc->vc_palette[j++]; 2708 palette_blue[k] = (val << 8) | val; 2709 } 2710 palette_cmap.len = 16; 2711 palette_cmap.start = 0; 2712 /* 2713 * If framebuffer is capable of less than 16 colors, 2714 * use default palette of fbcon. 2715 */ 2716 } else 2717 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2718 2719 fb_set_cmap(&palette_cmap, info); 2720 } 2721 2722 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) 2723 { 2724 unsigned long p; 2725 int line; 2726 2727 if (vc->vc_num != fg_console || !softback_lines) 2728 return (u16 *) (vc->vc_origin + offset); 2729 line = offset / vc->vc_size_row; 2730 if (line >= softback_lines) 2731 return (u16 *) (vc->vc_origin + offset - 2732 softback_lines * vc->vc_size_row); 2733 p = softback_curr + offset; 2734 if (p >= softback_end) 2735 p += softback_buf - softback_end; 2736 return (u16 *) p; 2737 } 2738 2739 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2740 int *px, int *py) 2741 { 2742 unsigned long ret; 2743 int x, y; 2744 2745 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2746 unsigned long offset = (pos - vc->vc_origin) / 2; 2747 2748 x = offset % vc->vc_cols; 2749 y = offset / vc->vc_cols; 2750 if (vc->vc_num == fg_console) 2751 y += softback_lines; 2752 ret = pos + (vc->vc_cols - x) * 2; 2753 } else if (vc->vc_num == fg_console && softback_lines) { 2754 unsigned long offset = pos - softback_curr; 2755 2756 if (pos < softback_curr) 2757 offset += softback_end - softback_buf; 2758 offset /= 2; 2759 x = offset % vc->vc_cols; 2760 y = offset / vc->vc_cols; 2761 ret = pos + (vc->vc_cols - x) * 2; 2762 if (ret == softback_end) 2763 ret = softback_buf; 2764 if (ret == softback_in) 2765 ret = vc->vc_origin; 2766 } else { 2767 /* Should not happen */ 2768 x = y = 0; 2769 ret = vc->vc_origin; 2770 } 2771 if (px) 2772 *px = x; 2773 if (py) 2774 *py = y; 2775 return ret; 2776 } 2777 2778 /* As we might be inside of softback, we may work with non-contiguous buffer, 2779 that's why we have to use a separate routine. */ 2780 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2781 { 2782 while (cnt--) { 2783 u16 a = scr_readw(p); 2784 if (!vc->vc_can_do_color) 2785 a ^= 0x0800; 2786 else if (vc->vc_hi_font_mask == 0x100) 2787 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2788 (((a) & 0x0e00) << 4); 2789 else 2790 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2791 (((a) & 0x0700) << 4); 2792 scr_writew(a, p++); 2793 if (p == (u16 *) softback_end) 2794 p = (u16 *) softback_buf; 2795 if (p == (u16 *) softback_in) 2796 p = (u16 *) vc->vc_origin; 2797 } 2798 } 2799 2800 static void fbcon_scrolldelta(struct vc_data *vc, int lines) 2801 { 2802 struct fb_info *info = registered_fb[con2fb_map[fg_console]]; 2803 struct fbcon_ops *ops = info->fbcon_par; 2804 struct display *disp = &fb_display[fg_console]; 2805 int offset, limit, scrollback_old; 2806 2807 if (softback_top) { 2808 if (vc->vc_num != fg_console) 2809 return; 2810 if (vc->vc_mode != KD_TEXT || !lines) 2811 return; 2812 if (logo_shown >= 0) { 2813 struct vc_data *conp2 = vc_cons[logo_shown].d; 2814 2815 if (conp2->vc_top == logo_lines 2816 && conp2->vc_bottom == conp2->vc_rows) 2817 conp2->vc_top = 0; 2818 if (logo_shown == vc->vc_num) { 2819 unsigned long p, q; 2820 int i; 2821 2822 p = softback_in; 2823 q = vc->vc_origin + 2824 logo_lines * vc->vc_size_row; 2825 for (i = 0; i < logo_lines; i++) { 2826 if (p == softback_top) 2827 break; 2828 if (p == softback_buf) 2829 p = softback_end; 2830 p -= vc->vc_size_row; 2831 q -= vc->vc_size_row; 2832 scr_memcpyw((u16 *) q, (u16 *) p, 2833 vc->vc_size_row); 2834 } 2835 softback_in = softback_curr = p; 2836 update_region(vc, vc->vc_origin, 2837 logo_lines * vc->vc_cols); 2838 } 2839 logo_shown = FBCON_LOGO_CANSHOW; 2840 } 2841 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); 2842 fbcon_redraw_softback(vc, disp, lines); 2843 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); 2844 return; 2845 } 2846 2847 if (!scrollback_phys_max) 2848 return; 2849 2850 scrollback_old = scrollback_current; 2851 scrollback_current -= lines; 2852 if (scrollback_current < 0) 2853 scrollback_current = 0; 2854 else if (scrollback_current > scrollback_max) 2855 scrollback_current = scrollback_max; 2856 if (scrollback_current == scrollback_old) 2857 return; 2858 2859 if (fbcon_is_inactive(vc, info)) 2860 return; 2861 2862 fbcon_cursor(vc, CM_ERASE); 2863 2864 offset = disp->yscroll - scrollback_current; 2865 limit = disp->vrows; 2866 switch (disp->scrollmode) { 2867 case SCROLL_WRAP_MOVE: 2868 info->var.vmode |= FB_VMODE_YWRAP; 2869 break; 2870 case SCROLL_PAN_MOVE: 2871 case SCROLL_PAN_REDRAW: 2872 limit -= vc->vc_rows; 2873 info->var.vmode &= ~FB_VMODE_YWRAP; 2874 break; 2875 } 2876 if (offset < 0) 2877 offset += limit; 2878 else if (offset >= limit) 2879 offset -= limit; 2880 2881 ops->var.xoffset = 0; 2882 ops->var.yoffset = offset * vc->vc_font.height; 2883 ops->update_start(info); 2884 2885 if (!scrollback_current) 2886 fbcon_cursor(vc, CM_DRAW); 2887 } 2888 2889 static int fbcon_set_origin(struct vc_data *vc) 2890 { 2891 if (softback_lines) 2892 fbcon_scrolldelta(vc, softback_lines); 2893 return 0; 2894 } 2895 2896 static void fbcon_suspended(struct fb_info *info) 2897 { 2898 struct vc_data *vc = NULL; 2899 struct fbcon_ops *ops = info->fbcon_par; 2900 2901 if (!ops || ops->currcon < 0) 2902 return; 2903 vc = vc_cons[ops->currcon].d; 2904 2905 /* Clear cursor, restore saved data */ 2906 fbcon_cursor(vc, CM_ERASE); 2907 } 2908 2909 static void fbcon_resumed(struct fb_info *info) 2910 { 2911 struct vc_data *vc; 2912 struct fbcon_ops *ops = info->fbcon_par; 2913 2914 if (!ops || ops->currcon < 0) 2915 return; 2916 vc = vc_cons[ops->currcon].d; 2917 2918 update_screen(vc); 2919 } 2920 2921 static void fbcon_modechanged(struct fb_info *info) 2922 { 2923 struct fbcon_ops *ops = info->fbcon_par; 2924 struct vc_data *vc; 2925 struct display *p; 2926 int rows, cols; 2927 2928 if (!ops || ops->currcon < 0) 2929 return; 2930 vc = vc_cons[ops->currcon].d; 2931 if (vc->vc_mode != KD_TEXT || 2932 registered_fb[con2fb_map[ops->currcon]] != info) 2933 return; 2934 2935 p = &fb_display[vc->vc_num]; 2936 set_blitting_type(vc, info); 2937 2938 if (con_is_visible(vc)) { 2939 var_to_display(p, &info->var, info); 2940 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2941 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2942 cols /= vc->vc_font.width; 2943 rows /= vc->vc_font.height; 2944 vc_resize(vc, cols, rows); 2945 updatescrollmode(p, info, vc); 2946 scrollback_max = 0; 2947 scrollback_current = 0; 2948 2949 if (!fbcon_is_inactive(vc, info)) { 2950 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2951 ops->update_start(info); 2952 } 2953 2954 fbcon_set_palette(vc, color_table); 2955 update_screen(vc); 2956 if (softback_buf) 2957 fbcon_update_softback(vc); 2958 } 2959 } 2960 2961 static void fbcon_set_all_vcs(struct fb_info *info) 2962 { 2963 struct fbcon_ops *ops = info->fbcon_par; 2964 struct vc_data *vc; 2965 struct display *p; 2966 int i, rows, cols, fg = -1; 2967 2968 if (!ops || ops->currcon < 0) 2969 return; 2970 2971 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2972 vc = vc_cons[i].d; 2973 if (!vc || vc->vc_mode != KD_TEXT || 2974 registered_fb[con2fb_map[i]] != info) 2975 continue; 2976 2977 if (con_is_visible(vc)) { 2978 fg = i; 2979 continue; 2980 } 2981 2982 p = &fb_display[vc->vc_num]; 2983 set_blitting_type(vc, info); 2984 var_to_display(p, &info->var, info); 2985 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2986 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2987 cols /= vc->vc_font.width; 2988 rows /= vc->vc_font.height; 2989 vc_resize(vc, cols, rows); 2990 } 2991 2992 if (fg != -1) 2993 fbcon_modechanged(info); 2994 } 2995 2996 static int fbcon_mode_deleted(struct fb_info *info, 2997 struct fb_videomode *mode) 2998 { 2999 struct fb_info *fb_info; 3000 struct display *p; 3001 int i, j, found = 0; 3002 3003 /* before deletion, ensure that mode is not in use */ 3004 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3005 j = con2fb_map[i]; 3006 if (j == -1) 3007 continue; 3008 fb_info = registered_fb[j]; 3009 if (fb_info != info) 3010 continue; 3011 p = &fb_display[i]; 3012 if (!p || !p->mode) 3013 continue; 3014 if (fb_mode_is_equal(p->mode, mode)) { 3015 found = 1; 3016 break; 3017 } 3018 } 3019 return found; 3020 } 3021 3022 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 3023 static int fbcon_unbind(void) 3024 { 3025 int ret; 3026 3027 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 3028 fbcon_is_default); 3029 3030 if (!ret) 3031 fbcon_has_console_bind = 0; 3032 3033 return ret; 3034 } 3035 #else 3036 static inline int fbcon_unbind(void) 3037 { 3038 return -EINVAL; 3039 } 3040 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 3041 3042 /* called with console_lock held */ 3043 static int fbcon_fb_unbind(int idx) 3044 { 3045 int i, new_idx = -1, ret = 0; 3046 3047 if (!fbcon_has_console_bind) 3048 return 0; 3049 3050 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3051 if (con2fb_map[i] != idx && 3052 con2fb_map[i] != -1) { 3053 new_idx = i; 3054 break; 3055 } 3056 } 3057 3058 if (new_idx != -1) { 3059 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3060 if (con2fb_map[i] == idx) 3061 set_con2fb_map(i, new_idx, 0); 3062 } 3063 } else { 3064 struct fb_info *info = registered_fb[idx]; 3065 3066 /* This is sort of like set_con2fb_map, except it maps 3067 * the consoles to no device and then releases the 3068 * oldinfo to free memory and cancel the cursor blink 3069 * timer. I can imagine this just becoming part of 3070 * set_con2fb_map where new_idx is -1 3071 */ 3072 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3073 if (con2fb_map[i] == idx) { 3074 con2fb_map[i] = -1; 3075 if (!search_fb_in_map(idx)) { 3076 ret = con2fb_release_oldinfo(vc_cons[i].d, 3077 info, NULL, i, 3078 idx, 0); 3079 if (ret) { 3080 con2fb_map[i] = idx; 3081 return ret; 3082 } 3083 } 3084 } 3085 } 3086 ret = fbcon_unbind(); 3087 } 3088 3089 return ret; 3090 } 3091 3092 /* called with console_lock held */ 3093 static int fbcon_fb_unregistered(struct fb_info *info) 3094 { 3095 int i, idx; 3096 3097 idx = info->node; 3098 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3099 if (con2fb_map[i] == idx) 3100 con2fb_map[i] = -1; 3101 } 3102 3103 if (idx == info_idx) { 3104 info_idx = -1; 3105 3106 for (i = 0; i < FB_MAX; i++) { 3107 if (registered_fb[i] != NULL) { 3108 info_idx = i; 3109 break; 3110 } 3111 } 3112 } 3113 3114 if (info_idx != -1) { 3115 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3116 if (con2fb_map[i] == -1) 3117 con2fb_map[i] = info_idx; 3118 } 3119 } 3120 3121 if (primary_device == idx) 3122 primary_device = -1; 3123 3124 if (!num_registered_fb) 3125 do_unregister_con_driver(&fb_con); 3126 3127 return 0; 3128 } 3129 3130 /* called with console_lock held */ 3131 static void fbcon_remap_all(int idx) 3132 { 3133 int i; 3134 for (i = first_fb_vc; i <= last_fb_vc; i++) 3135 set_con2fb_map(i, idx, 0); 3136 3137 if (con_is_bound(&fb_con)) { 3138 printk(KERN_INFO "fbcon: Remapping primary device, " 3139 "fb%i, to tty %i-%i\n", idx, 3140 first_fb_vc + 1, last_fb_vc + 1); 3141 info_idx = idx; 3142 } 3143 } 3144 3145 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 3146 static void fbcon_select_primary(struct fb_info *info) 3147 { 3148 if (!map_override && primary_device == -1 && 3149 fb_is_primary_device(info)) { 3150 int i; 3151 3152 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 3153 info->fix.id, info->node); 3154 primary_device = info->node; 3155 3156 for (i = first_fb_vc; i <= last_fb_vc; i++) 3157 con2fb_map_boot[i] = primary_device; 3158 3159 if (con_is_bound(&fb_con)) { 3160 printk(KERN_INFO "fbcon: Remapping primary device, " 3161 "fb%i, to tty %i-%i\n", info->node, 3162 first_fb_vc + 1, last_fb_vc + 1); 3163 info_idx = primary_device; 3164 } 3165 } 3166 3167 } 3168 #else 3169 static inline void fbcon_select_primary(struct fb_info *info) 3170 { 3171 return; 3172 } 3173 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 3174 3175 /* called with console_lock held */ 3176 static int fbcon_fb_registered(struct fb_info *info) 3177 { 3178 int ret = 0, i, idx; 3179 3180 idx = info->node; 3181 fbcon_select_primary(info); 3182 3183 if (info_idx == -1) { 3184 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3185 if (con2fb_map_boot[i] == idx) { 3186 info_idx = idx; 3187 break; 3188 } 3189 } 3190 3191 if (info_idx != -1) 3192 ret = do_fbcon_takeover(1); 3193 } else { 3194 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3195 if (con2fb_map_boot[i] == idx) 3196 set_con2fb_map(i, idx, 0); 3197 } 3198 } 3199 3200 return ret; 3201 } 3202 3203 static void fbcon_fb_blanked(struct fb_info *info, int blank) 3204 { 3205 struct fbcon_ops *ops = info->fbcon_par; 3206 struct vc_data *vc; 3207 3208 if (!ops || ops->currcon < 0) 3209 return; 3210 3211 vc = vc_cons[ops->currcon].d; 3212 if (vc->vc_mode != KD_TEXT || 3213 registered_fb[con2fb_map[ops->currcon]] != info) 3214 return; 3215 3216 if (con_is_visible(vc)) { 3217 if (blank) 3218 do_blank_screen(0); 3219 else 3220 do_unblank_screen(0); 3221 } 3222 ops->blank_state = blank; 3223 } 3224 3225 static void fbcon_new_modelist(struct fb_info *info) 3226 { 3227 int i; 3228 struct vc_data *vc; 3229 struct fb_var_screeninfo var; 3230 const struct fb_videomode *mode; 3231 3232 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3233 if (registered_fb[con2fb_map[i]] != info) 3234 continue; 3235 if (!fb_display[i].mode) 3236 continue; 3237 vc = vc_cons[i].d; 3238 display_to_var(&var, &fb_display[i]); 3239 mode = fb_find_nearest_mode(fb_display[i].mode, 3240 &info->modelist); 3241 fb_videomode_to_var(&var, mode); 3242 fbcon_set_disp(info, &var, vc->vc_num); 3243 } 3244 } 3245 3246 static void fbcon_get_requirement(struct fb_info *info, 3247 struct fb_blit_caps *caps) 3248 { 3249 struct vc_data *vc; 3250 struct display *p; 3251 3252 if (caps->flags) { 3253 int i, charcnt; 3254 3255 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3256 vc = vc_cons[i].d; 3257 if (vc && vc->vc_mode == KD_TEXT && 3258 info->node == con2fb_map[i]) { 3259 p = &fb_display[i]; 3260 caps->x |= 1 << (vc->vc_font.width - 1); 3261 caps->y |= 1 << (vc->vc_font.height - 1); 3262 charcnt = (p->userfont) ? 3263 FNTCHARCNT(p->fontdata) : 256; 3264 if (caps->len < charcnt) 3265 caps->len = charcnt; 3266 } 3267 } 3268 } else { 3269 vc = vc_cons[fg_console].d; 3270 3271 if (vc && vc->vc_mode == KD_TEXT && 3272 info->node == con2fb_map[fg_console]) { 3273 p = &fb_display[fg_console]; 3274 caps->x = 1 << (vc->vc_font.width - 1); 3275 caps->y = 1 << (vc->vc_font.height - 1); 3276 caps->len = (p->userfont) ? 3277 FNTCHARCNT(p->fontdata) : 256; 3278 } 3279 } 3280 } 3281 3282 static int fbcon_event_notify(struct notifier_block *self, 3283 unsigned long action, void *data) 3284 { 3285 struct fb_event *event = data; 3286 struct fb_info *info = event->info; 3287 struct fb_videomode *mode; 3288 struct fb_con2fbmap *con2fb; 3289 struct fb_blit_caps *caps; 3290 int idx, ret = 0; 3291 3292 /* 3293 * ignore all events except driver registration and deregistration 3294 * if fbcon is not active 3295 */ 3296 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED || 3297 action == FB_EVENT_FB_UNREGISTERED)) 3298 goto done; 3299 3300 switch(action) { 3301 case FB_EVENT_SUSPEND: 3302 fbcon_suspended(info); 3303 break; 3304 case FB_EVENT_RESUME: 3305 fbcon_resumed(info); 3306 break; 3307 case FB_EVENT_MODE_CHANGE: 3308 fbcon_modechanged(info); 3309 break; 3310 case FB_EVENT_MODE_CHANGE_ALL: 3311 fbcon_set_all_vcs(info); 3312 break; 3313 case FB_EVENT_MODE_DELETE: 3314 mode = event->data; 3315 ret = fbcon_mode_deleted(info, mode); 3316 break; 3317 case FB_EVENT_FB_UNBIND: 3318 idx = info->node; 3319 ret = fbcon_fb_unbind(idx); 3320 break; 3321 case FB_EVENT_FB_REGISTERED: 3322 ret = fbcon_fb_registered(info); 3323 break; 3324 case FB_EVENT_FB_UNREGISTERED: 3325 ret = fbcon_fb_unregistered(info); 3326 break; 3327 case FB_EVENT_SET_CONSOLE_MAP: 3328 /* called with console lock held */ 3329 con2fb = event->data; 3330 ret = set_con2fb_map(con2fb->console - 1, 3331 con2fb->framebuffer, 1); 3332 break; 3333 case FB_EVENT_GET_CONSOLE_MAP: 3334 con2fb = event->data; 3335 con2fb->framebuffer = con2fb_map[con2fb->console - 1]; 3336 break; 3337 case FB_EVENT_BLANK: 3338 fbcon_fb_blanked(info, *(int *)event->data); 3339 break; 3340 case FB_EVENT_NEW_MODELIST: 3341 fbcon_new_modelist(info); 3342 break; 3343 case FB_EVENT_GET_REQ: 3344 caps = event->data; 3345 fbcon_get_requirement(info, caps); 3346 break; 3347 case FB_EVENT_REMAP_ALL_CONSOLE: 3348 idx = info->node; 3349 fbcon_remap_all(idx); 3350 break; 3351 } 3352 done: 3353 return ret; 3354 } 3355 3356 /* 3357 * The console `switch' structure for the frame buffer based console 3358 */ 3359 3360 static const struct consw fb_con = { 3361 .owner = THIS_MODULE, 3362 .con_startup = fbcon_startup, 3363 .con_init = fbcon_init, 3364 .con_deinit = fbcon_deinit, 3365 .con_clear = fbcon_clear, 3366 .con_putc = fbcon_putc, 3367 .con_putcs = fbcon_putcs, 3368 .con_cursor = fbcon_cursor, 3369 .con_scroll = fbcon_scroll, 3370 .con_switch = fbcon_switch, 3371 .con_blank = fbcon_blank, 3372 .con_font_set = fbcon_set_font, 3373 .con_font_get = fbcon_get_font, 3374 .con_font_default = fbcon_set_def_font, 3375 .con_font_copy = fbcon_copy_font, 3376 .con_set_palette = fbcon_set_palette, 3377 .con_scrolldelta = fbcon_scrolldelta, 3378 .con_set_origin = fbcon_set_origin, 3379 .con_invert_region = fbcon_invert_region, 3380 .con_screen_pos = fbcon_screen_pos, 3381 .con_getxy = fbcon_getxy, 3382 .con_resize = fbcon_resize, 3383 .con_debug_enter = fbcon_debug_enter, 3384 .con_debug_leave = fbcon_debug_leave, 3385 }; 3386 3387 static struct notifier_block fbcon_event_notifier = { 3388 .notifier_call = fbcon_event_notify, 3389 }; 3390 3391 static ssize_t store_rotate(struct device *device, 3392 struct device_attribute *attr, const char *buf, 3393 size_t count) 3394 { 3395 struct fb_info *info; 3396 int rotate, idx; 3397 char **last = NULL; 3398 3399 if (fbcon_has_exited) 3400 return count; 3401 3402 console_lock(); 3403 idx = con2fb_map[fg_console]; 3404 3405 if (idx == -1 || registered_fb[idx] == NULL) 3406 goto err; 3407 3408 info = registered_fb[idx]; 3409 rotate = simple_strtoul(buf, last, 0); 3410 fbcon_rotate(info, rotate); 3411 err: 3412 console_unlock(); 3413 return count; 3414 } 3415 3416 static ssize_t store_rotate_all(struct device *device, 3417 struct device_attribute *attr,const char *buf, 3418 size_t count) 3419 { 3420 struct fb_info *info; 3421 int rotate, idx; 3422 char **last = NULL; 3423 3424 if (fbcon_has_exited) 3425 return count; 3426 3427 console_lock(); 3428 idx = con2fb_map[fg_console]; 3429 3430 if (idx == -1 || registered_fb[idx] == NULL) 3431 goto err; 3432 3433 info = registered_fb[idx]; 3434 rotate = simple_strtoul(buf, last, 0); 3435 fbcon_rotate_all(info, rotate); 3436 err: 3437 console_unlock(); 3438 return count; 3439 } 3440 3441 static ssize_t show_rotate(struct device *device, 3442 struct device_attribute *attr,char *buf) 3443 { 3444 struct fb_info *info; 3445 int rotate = 0, idx; 3446 3447 if (fbcon_has_exited) 3448 return 0; 3449 3450 console_lock(); 3451 idx = con2fb_map[fg_console]; 3452 3453 if (idx == -1 || registered_fb[idx] == NULL) 3454 goto err; 3455 3456 info = registered_fb[idx]; 3457 rotate = fbcon_get_rotate(info); 3458 err: 3459 console_unlock(); 3460 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3461 } 3462 3463 static ssize_t show_cursor_blink(struct device *device, 3464 struct device_attribute *attr, char *buf) 3465 { 3466 struct fb_info *info; 3467 struct fbcon_ops *ops; 3468 int idx, blink = -1; 3469 3470 if (fbcon_has_exited) 3471 return 0; 3472 3473 console_lock(); 3474 idx = con2fb_map[fg_console]; 3475 3476 if (idx == -1 || registered_fb[idx] == NULL) 3477 goto err; 3478 3479 info = registered_fb[idx]; 3480 ops = info->fbcon_par; 3481 3482 if (!ops) 3483 goto err; 3484 3485 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3486 err: 3487 console_unlock(); 3488 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3489 } 3490 3491 static ssize_t store_cursor_blink(struct device *device, 3492 struct device_attribute *attr, 3493 const char *buf, size_t count) 3494 { 3495 struct fb_info *info; 3496 int blink, idx; 3497 char **last = NULL; 3498 3499 if (fbcon_has_exited) 3500 return count; 3501 3502 console_lock(); 3503 idx = con2fb_map[fg_console]; 3504 3505 if (idx == -1 || registered_fb[idx] == NULL) 3506 goto err; 3507 3508 info = registered_fb[idx]; 3509 3510 if (!info->fbcon_par) 3511 goto err; 3512 3513 blink = simple_strtoul(buf, last, 0); 3514 3515 if (blink) { 3516 fbcon_cursor_noblink = 0; 3517 fbcon_add_cursor_timer(info); 3518 } else { 3519 fbcon_cursor_noblink = 1; 3520 fbcon_del_cursor_timer(info); 3521 } 3522 3523 err: 3524 console_unlock(); 3525 return count; 3526 } 3527 3528 static struct device_attribute device_attrs[] = { 3529 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3530 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3531 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3532 store_cursor_blink), 3533 }; 3534 3535 static int fbcon_init_device(void) 3536 { 3537 int i, error = 0; 3538 3539 fbcon_has_sysfs = 1; 3540 3541 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3542 error = device_create_file(fbcon_device, &device_attrs[i]); 3543 3544 if (error) 3545 break; 3546 } 3547 3548 if (error) { 3549 while (--i >= 0) 3550 device_remove_file(fbcon_device, &device_attrs[i]); 3551 3552 fbcon_has_sysfs = 0; 3553 } 3554 3555 return 0; 3556 } 3557 3558 static void fbcon_start(void) 3559 { 3560 if (num_registered_fb) { 3561 int i; 3562 3563 console_lock(); 3564 3565 for (i = 0; i < FB_MAX; i++) { 3566 if (registered_fb[i] != NULL) { 3567 info_idx = i; 3568 break; 3569 } 3570 } 3571 3572 do_fbcon_takeover(0); 3573 console_unlock(); 3574 3575 } 3576 } 3577 3578 static void fbcon_exit(void) 3579 { 3580 struct fb_info *info; 3581 int i, j, mapped; 3582 3583 if (fbcon_has_exited) 3584 return; 3585 3586 kfree((void *)softback_buf); 3587 softback_buf = 0UL; 3588 3589 for (i = 0; i < FB_MAX; i++) { 3590 int pending = 0; 3591 3592 mapped = 0; 3593 info = registered_fb[i]; 3594 3595 if (info == NULL) 3596 continue; 3597 3598 if (info->queue.func) 3599 pending = cancel_work_sync(&info->queue); 3600 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3601 "no")); 3602 3603 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3604 if (con2fb_map[j] == i) { 3605 mapped = 1; 3606 break; 3607 } 3608 } 3609 3610 if (mapped) { 3611 if (info->fbops->fb_release) 3612 info->fbops->fb_release(info, 0); 3613 module_put(info->fbops->owner); 3614 3615 if (info->fbcon_par) { 3616 struct fbcon_ops *ops = info->fbcon_par; 3617 3618 fbcon_del_cursor_timer(info); 3619 kfree(ops->cursor_src); 3620 kfree(ops->cursor_state.mask); 3621 kfree(info->fbcon_par); 3622 info->fbcon_par = NULL; 3623 } 3624 3625 if (info->queue.func == fb_flashcursor) 3626 info->queue.func = NULL; 3627 } 3628 } 3629 3630 fbcon_has_exited = 1; 3631 } 3632 3633 void __init fb_console_init(void) 3634 { 3635 int i; 3636 3637 console_lock(); 3638 fb_register_client(&fbcon_event_notifier); 3639 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3640 "fbcon"); 3641 3642 if (IS_ERR(fbcon_device)) { 3643 printk(KERN_WARNING "Unable to create device " 3644 "for fbcon; errno = %ld\n", 3645 PTR_ERR(fbcon_device)); 3646 fbcon_device = NULL; 3647 } else 3648 fbcon_init_device(); 3649 3650 for (i = 0; i < MAX_NR_CONSOLES; i++) 3651 con2fb_map[i] = -1; 3652 3653 console_unlock(); 3654 fbcon_start(); 3655 } 3656 3657 #ifdef MODULE 3658 3659 static void __exit fbcon_deinit_device(void) 3660 { 3661 int i; 3662 3663 if (fbcon_has_sysfs) { 3664 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3665 device_remove_file(fbcon_device, &device_attrs[i]); 3666 3667 fbcon_has_sysfs = 0; 3668 } 3669 } 3670 3671 void __exit fb_console_exit(void) 3672 { 3673 console_lock(); 3674 fb_unregister_client(&fbcon_event_notifier); 3675 fbcon_deinit_device(); 3676 device_destroy(fb_class, MKDEV(0, 0)); 3677 fbcon_exit(); 3678 do_unregister_con_driver(&fb_con); 3679 console_unlock(); 3680 } 3681 #endif 3682