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