1 /* 2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver 3 * 4 * Copyright (C) 1995 Geert Uytterhoeven 5 * 6 * 7 * This file is based on the original Amiga console driver (amicon.c): 8 * 9 * Copyright (C) 1993 Hamish Macdonald 10 * Greg Harp 11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk] 12 * 13 * with work by William Rucklidge (wjr@cs.cornell.edu) 14 * Geert Uytterhoeven 15 * Jes Sorensen (jds@kom.auc.dk) 16 * Martin Apel 17 * 18 * and on the original Atari console driver (atacon.c): 19 * 20 * Copyright (C) 1993 Bjoern Brauel 21 * Roman Hodek 22 * 23 * with work by Guenther Kelleter 24 * Martin Schaller 25 * Andreas Schwab 26 * 27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org) 28 * Smart redraw scrolling, arbitrary font width support, 512char font support 29 * and software scrollback added by 30 * Jakub Jelinek (jj@ultra.linux.cz) 31 * 32 * Random hacking by Martin Mares <mj@ucw.cz> 33 * 34 * 2001 - Documented with DocBook 35 * - Brad Douglas <brad@neruo.com> 36 * 37 * The low level operations for the various display memory organizations are 38 * now in separate source files. 39 * 40 * Currently the following organizations are supported: 41 * 42 * o afb Amiga bitplanes 43 * o cfb{2,4,8,16,24,32} Packed pixels 44 * o ilbm Amiga interleaved bitplanes 45 * o iplan2p[248] Atari interleaved bitplanes 46 * o mfb Monochrome 47 * o vga VGA characters/attributes 48 * 49 * To do: 50 * 51 * - Implement 16 plane mode (iplan2p16) 52 * 53 * 54 * This file is subject to the terms and conditions of the GNU General Public 55 * License. See the file COPYING in the main directory of this archive for 56 * more details. 57 */ 58 59 #undef FBCONDEBUG 60 61 #include <linux/module.h> 62 #include <linux/types.h> 63 #include <linux/fs.h> 64 #include <linux/kernel.h> 65 #include <linux/delay.h> /* MSch: for IRQ probe */ 66 #include <linux/console.h> 67 #include <linux/string.h> 68 #include <linux/kd.h> 69 #include <linux/slab.h> 70 #include <linux/fb.h> 71 #include <linux/fbcon.h> 72 #include <linux/vt_kern.h> 73 #include <linux/selection.h> 74 #include <linux/font.h> 75 #include <linux/smp.h> 76 #include <linux/init.h> 77 #include <linux/interrupt.h> 78 #include <linux/crc32.h> /* For counting font checksums */ 79 #include <asm/fb.h> 80 #include <asm/irq.h> 81 82 #include "fbcon.h" 83 84 #ifdef FBCONDEBUG 85 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args) 86 #else 87 # define DPRINTK(fmt, args...) 88 #endif 89 90 enum { 91 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */ 92 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */ 93 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */ 94 }; 95 96 static struct display fb_display[MAX_NR_CONSOLES]; 97 98 static signed char con2fb_map[MAX_NR_CONSOLES]; 99 static signed char con2fb_map_boot[MAX_NR_CONSOLES]; 100 101 static int logo_lines; 102 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO 103 enums. */ 104 static int logo_shown = FBCON_LOGO_CANSHOW; 105 /* Software scrollback */ 106 static int fbcon_softback_size = 32768; 107 static unsigned long softback_buf, softback_curr; 108 static unsigned long softback_in; 109 static unsigned long softback_top, softback_end; 110 static int softback_lines; 111 /* console mappings */ 112 static int first_fb_vc; 113 static int last_fb_vc = MAX_NR_CONSOLES - 1; 114 static int fbcon_is_default = 1; 115 static int fbcon_has_exited; 116 static int primary_device = -1; 117 static int fbcon_has_console_bind; 118 119 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 120 static int map_override; 121 122 static inline void fbcon_map_override(void) 123 { 124 map_override = 1; 125 } 126 #else 127 static inline void fbcon_map_override(void) 128 { 129 } 130 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */ 131 132 /* font data */ 133 static char fontname[40]; 134 135 /* current fb_info */ 136 static int info_idx = -1; 137 138 /* console rotation */ 139 static int initial_rotation = -1; 140 static int fbcon_has_sysfs; 141 static int margin_color; 142 143 static const struct consw fb_con; 144 145 #define CM_SOFTBACK (8) 146 147 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) 148 149 static int fbcon_set_origin(struct vc_data *); 150 151 static int fbcon_cursor_noblink; 152 153 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) 154 155 /* 156 * Interface used by the world 157 */ 158 159 static const char *fbcon_startup(void); 160 static void fbcon_init(struct vc_data *vc, int init); 161 static void fbcon_deinit(struct vc_data *vc); 162 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 163 int width); 164 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); 165 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 166 int count, int ypos, int xpos); 167 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); 168 static void fbcon_cursor(struct vc_data *vc, int mode); 169 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 170 int height, int width); 171 static int fbcon_switch(struct vc_data *vc); 172 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); 173 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table); 174 175 /* 176 * Internal routines 177 */ 178 static __inline__ void ywrap_up(struct vc_data *vc, int count); 179 static __inline__ void ywrap_down(struct vc_data *vc, int count); 180 static __inline__ void ypan_up(struct vc_data *vc, int count); 181 static __inline__ void ypan_down(struct vc_data *vc, int count); 182 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, 183 int dy, int dx, int height, int width, u_int y_break); 184 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 185 int unit); 186 static void fbcon_redraw_move(struct vc_data *vc, struct display *p, 187 int line, int count, int dy); 188 static void fbcon_modechanged(struct fb_info *info); 189 static void fbcon_set_all_vcs(struct fb_info *info); 190 static void fbcon_start(void); 191 static void fbcon_exit(void); 192 static struct device *fbcon_device; 193 194 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION 195 static inline void fbcon_set_rotation(struct fb_info *info) 196 { 197 struct fbcon_ops *ops = info->fbcon_par; 198 199 if (!(info->flags & FBINFO_MISC_TILEBLITTING) && 200 ops->p->con_rotate < 4) 201 ops->rotate = ops->p->con_rotate; 202 else 203 ops->rotate = 0; 204 } 205 206 static void fbcon_rotate(struct fb_info *info, u32 rotate) 207 { 208 struct fbcon_ops *ops= info->fbcon_par; 209 struct fb_info *fb_info; 210 211 if (!ops || ops->currcon == -1) 212 return; 213 214 fb_info = registered_fb[con2fb_map[ops->currcon]]; 215 216 if (info == fb_info) { 217 struct display *p = &fb_display[ops->currcon]; 218 219 if (rotate < 4) 220 p->con_rotate = rotate; 221 else 222 p->con_rotate = 0; 223 224 fbcon_modechanged(info); 225 } 226 } 227 228 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 229 { 230 struct fbcon_ops *ops = info->fbcon_par; 231 struct vc_data *vc; 232 struct display *p; 233 int i; 234 235 if (!ops || ops->currcon < 0 || rotate > 3) 236 return; 237 238 for (i = first_fb_vc; i <= last_fb_vc; i++) { 239 vc = vc_cons[i].d; 240 if (!vc || vc->vc_mode != KD_TEXT || 241 registered_fb[con2fb_map[i]] != info) 242 continue; 243 244 p = &fb_display[vc->vc_num]; 245 p->con_rotate = rotate; 246 } 247 248 fbcon_set_all_vcs(info); 249 } 250 #else 251 static inline void fbcon_set_rotation(struct fb_info *info) 252 { 253 struct fbcon_ops *ops = info->fbcon_par; 254 255 ops->rotate = FB_ROTATE_UR; 256 } 257 258 static void fbcon_rotate(struct fb_info *info, u32 rotate) 259 { 260 return; 261 } 262 263 static void fbcon_rotate_all(struct fb_info *info, u32 rotate) 264 { 265 return; 266 } 267 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ 268 269 static int fbcon_get_rotate(struct fb_info *info) 270 { 271 struct fbcon_ops *ops = info->fbcon_par; 272 273 return (ops) ? ops->rotate : 0; 274 } 275 276 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) 277 { 278 struct fbcon_ops *ops = info->fbcon_par; 279 280 return (info->state != FBINFO_STATE_RUNNING || 281 vc->vc_mode != KD_TEXT || ops->graphics) && 282 !vt_force_oops_output(vc); 283 } 284 285 static int get_color(struct vc_data *vc, struct fb_info *info, 286 u16 c, int is_fg) 287 { 288 int depth = fb_get_color_depth(&info->var, &info->fix); 289 int color = 0; 290 291 if (console_blanked) { 292 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; 293 294 c = vc->vc_video_erase_char & charmask; 295 } 296 297 if (depth != 1) 298 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) 299 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); 300 301 switch (depth) { 302 case 1: 303 { 304 int col = mono_col(info); 305 /* 0 or 1 */ 306 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; 307 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; 308 309 if (console_blanked) 310 fg = bg; 311 312 color = (is_fg) ? fg : bg; 313 break; 314 } 315 case 2: 316 /* 317 * Scale down 16-colors to 4 colors. Default 4-color palette 318 * is grayscale. However, simply dividing the values by 4 319 * will not work, as colors 1, 2 and 3 will be scaled-down 320 * to zero rendering them invisible. So empirically convert 321 * colors to a sane 4-level grayscale. 322 */ 323 switch (color) { 324 case 0: 325 color = 0; /* black */ 326 break; 327 case 1 ... 6: 328 color = 2; /* white */ 329 break; 330 case 7 ... 8: 331 color = 1; /* gray */ 332 break; 333 default: 334 color = 3; /* intense white */ 335 break; 336 } 337 break; 338 case 3: 339 /* 340 * Last 8 entries of default 16-color palette is a more intense 341 * version of the first 8 (i.e., same chrominance, different 342 * luminance). 343 */ 344 color &= 7; 345 break; 346 } 347 348 349 return color; 350 } 351 352 static void fbcon_update_softback(struct vc_data *vc) 353 { 354 int l = fbcon_softback_size / vc->vc_size_row; 355 356 if (l > 5) 357 softback_end = softback_buf + l * vc->vc_size_row; 358 else 359 /* Smaller scrollback makes no sense, and 0 would screw 360 the operation totally */ 361 softback_top = 0; 362 } 363 364 static void fb_flashcursor(struct work_struct *work) 365 { 366 struct fb_info *info = container_of(work, struct fb_info, queue); 367 struct fbcon_ops *ops = info->fbcon_par; 368 struct vc_data *vc = NULL; 369 int c; 370 int mode; 371 int ret; 372 373 /* FIXME: we should sort out the unbind locking instead */ 374 /* instead we just fail to flash the cursor if we can't get 375 * the lock instead of blocking fbcon deinit */ 376 ret = console_trylock(); 377 if (ret == 0) 378 return; 379 380 if (ops && ops->currcon != -1) 381 vc = vc_cons[ops->currcon].d; 382 383 if (!vc || !con_is_visible(vc) || 384 registered_fb[con2fb_map[vc->vc_num]] != info || 385 vc->vc_deccm != 1) { 386 console_unlock(); 387 return; 388 } 389 390 c = scr_readw((u16 *) vc->vc_pos); 391 mode = (!ops->cursor_flash || ops->cursor_state.enable) ? 392 CM_ERASE : CM_DRAW; 393 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1), 394 get_color(vc, info, c, 0)); 395 console_unlock(); 396 } 397 398 static void cursor_timer_handler(struct timer_list *t) 399 { 400 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer); 401 struct fb_info *info = ops->info; 402 403 queue_work(system_power_efficient_wq, &info->queue); 404 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 405 } 406 407 static void fbcon_add_cursor_timer(struct fb_info *info) 408 { 409 struct fbcon_ops *ops = info->fbcon_par; 410 411 if ((!info->queue.func || info->queue.func == fb_flashcursor) && 412 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) && 413 !fbcon_cursor_noblink) { 414 if (!info->queue.func) 415 INIT_WORK(&info->queue, fb_flashcursor); 416 417 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0); 418 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); 419 ops->flags |= FBCON_FLAGS_CURSOR_TIMER; 420 } 421 } 422 423 static void fbcon_del_cursor_timer(struct fb_info *info) 424 { 425 struct fbcon_ops *ops = info->fbcon_par; 426 427 if (info->queue.func == fb_flashcursor && 428 ops->flags & FBCON_FLAGS_CURSOR_TIMER) { 429 del_timer_sync(&ops->cursor_timer); 430 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; 431 } 432 } 433 434 #ifndef MODULE 435 static int __init fb_console_setup(char *this_opt) 436 { 437 char *options; 438 int i, j; 439 440 if (!this_opt || !*this_opt) 441 return 1; 442 443 while ((options = strsep(&this_opt, ",")) != NULL) { 444 if (!strncmp(options, "font:", 5)) { 445 strlcpy(fontname, options + 5, sizeof(fontname)); 446 continue; 447 } 448 449 if (!strncmp(options, "scrollback:", 11)) { 450 options += 11; 451 if (*options) { 452 fbcon_softback_size = simple_strtoul(options, &options, 0); 453 if (*options == 'k' || *options == 'K') { 454 fbcon_softback_size *= 1024; 455 } 456 } 457 continue; 458 } 459 460 if (!strncmp(options, "map:", 4)) { 461 options += 4; 462 if (*options) { 463 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { 464 if (!options[j]) 465 j = 0; 466 con2fb_map_boot[i] = 467 (options[j++]-'0') % FB_MAX; 468 } 469 470 fbcon_map_override(); 471 } 472 continue; 473 } 474 475 if (!strncmp(options, "vc:", 3)) { 476 options += 3; 477 if (*options) 478 first_fb_vc = simple_strtoul(options, &options, 10) - 1; 479 if (first_fb_vc < 0) 480 first_fb_vc = 0; 481 if (*options++ == '-') 482 last_fb_vc = simple_strtoul(options, &options, 10) - 1; 483 fbcon_is_default = 0; 484 continue; 485 } 486 487 if (!strncmp(options, "rotate:", 7)) { 488 options += 7; 489 if (*options) 490 initial_rotation = simple_strtoul(options, &options, 0); 491 if (initial_rotation > 3) 492 initial_rotation = 0; 493 continue; 494 } 495 496 if (!strncmp(options, "margin:", 7)) { 497 options += 7; 498 if (*options) 499 margin_color = simple_strtoul(options, &options, 0); 500 continue; 501 } 502 } 503 return 1; 504 } 505 506 __setup("fbcon=", fb_console_setup); 507 #endif 508 509 static int search_fb_in_map(int idx) 510 { 511 int i, retval = 0; 512 513 for (i = first_fb_vc; i <= last_fb_vc; i++) { 514 if (con2fb_map[i] == idx) 515 retval = 1; 516 } 517 return retval; 518 } 519 520 static int search_for_mapped_con(void) 521 { 522 int i, retval = 0; 523 524 for (i = first_fb_vc; i <= last_fb_vc; i++) { 525 if (con2fb_map[i] != -1) 526 retval = 1; 527 } 528 return retval; 529 } 530 531 static int do_fbcon_takeover(int show_logo) 532 { 533 int err, i; 534 535 if (!num_registered_fb) 536 return -ENODEV; 537 538 if (!show_logo) 539 logo_shown = FBCON_LOGO_DONTSHOW; 540 541 for (i = first_fb_vc; i <= last_fb_vc; i++) 542 con2fb_map[i] = info_idx; 543 544 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, 545 fbcon_is_default); 546 547 if (err) { 548 for (i = first_fb_vc; i <= last_fb_vc; i++) 549 con2fb_map[i] = -1; 550 info_idx = -1; 551 } else { 552 fbcon_has_console_bind = 1; 553 } 554 555 return err; 556 } 557 558 #ifdef MODULE 559 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 560 int cols, int rows, int new_cols, int new_rows) 561 { 562 logo_shown = FBCON_LOGO_DONTSHOW; 563 } 564 #else 565 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 566 int cols, int rows, int new_cols, int new_rows) 567 { 568 /* Need to make room for the logo */ 569 struct fbcon_ops *ops = info->fbcon_par; 570 int cnt, erase = vc->vc_video_erase_char, step; 571 unsigned short *save = NULL, *r, *q; 572 int logo_height; 573 574 if (info->fbops->owner) { 575 logo_shown = FBCON_LOGO_DONTSHOW; 576 return; 577 } 578 579 /* 580 * remove underline attribute from erase character 581 * if black and white framebuffer. 582 */ 583 if (fb_get_color_depth(&info->var, &info->fix) == 1) 584 erase &= ~0x400; 585 logo_height = fb_prepare_logo(info, ops->rotate); 586 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); 587 q = (unsigned short *) (vc->vc_origin + 588 vc->vc_size_row * rows); 589 step = logo_lines * cols; 590 for (r = q - logo_lines * cols; r < q; r++) 591 if (scr_readw(r) != vc->vc_video_erase_char) 592 break; 593 if (r != q && new_rows >= rows + logo_lines) { 594 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL); 595 if (save) { 596 int i = cols < new_cols ? cols : new_cols; 597 scr_memsetw(save, erase, logo_lines * new_cols * 2); 598 r = q - step; 599 for (cnt = 0; cnt < logo_lines; cnt++, r += i) 600 scr_memcpyw(save + cnt * new_cols, r, 2 * i); 601 r = q; 602 } 603 } 604 if (r == q) { 605 /* We can scroll screen down */ 606 r = q - step - cols; 607 for (cnt = rows - logo_lines; cnt > 0; cnt--) { 608 scr_memcpyw(r + step, r, vc->vc_size_row); 609 r -= cols; 610 } 611 if (!save) { 612 int lines; 613 if (vc->vc_y + logo_lines >= rows) 614 lines = rows - vc->vc_y - 1; 615 else 616 lines = logo_lines; 617 vc->vc_y += lines; 618 vc->vc_pos += lines * vc->vc_size_row; 619 } 620 } 621 scr_memsetw((unsigned short *) vc->vc_origin, 622 erase, 623 vc->vc_size_row * logo_lines); 624 625 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 626 fbcon_clear_margins(vc, 0); 627 update_screen(vc); 628 } 629 630 if (save) { 631 q = (unsigned short *) (vc->vc_origin + 632 vc->vc_size_row * 633 rows); 634 scr_memcpyw(q, save, logo_lines * new_cols * 2); 635 vc->vc_y += logo_lines; 636 vc->vc_pos += logo_lines * vc->vc_size_row; 637 kfree(save); 638 } 639 640 if (logo_lines > vc->vc_bottom) { 641 logo_shown = FBCON_LOGO_CANSHOW; 642 printk(KERN_INFO 643 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); 644 } else if (logo_shown != FBCON_LOGO_DONTSHOW) { 645 logo_shown = FBCON_LOGO_DRAW; 646 vc->vc_top = logo_lines; 647 } 648 } 649 #endif /* MODULE */ 650 651 #ifdef CONFIG_FB_TILEBLITTING 652 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 653 { 654 struct fbcon_ops *ops = info->fbcon_par; 655 656 ops->p = &fb_display[vc->vc_num]; 657 658 if ((info->flags & FBINFO_MISC_TILEBLITTING)) 659 fbcon_set_tileops(vc, info); 660 else { 661 fbcon_set_rotation(info); 662 fbcon_set_bitops(ops); 663 } 664 } 665 666 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 667 { 668 int err = 0; 669 670 if (info->flags & FBINFO_MISC_TILEBLITTING && 671 info->tileops->fb_get_tilemax(info) < charcount) 672 err = 1; 673 674 return err; 675 } 676 #else 677 static void set_blitting_type(struct vc_data *vc, struct fb_info *info) 678 { 679 struct fbcon_ops *ops = info->fbcon_par; 680 681 info->flags &= ~FBINFO_MISC_TILEBLITTING; 682 ops->p = &fb_display[vc->vc_num]; 683 fbcon_set_rotation(info); 684 fbcon_set_bitops(ops); 685 } 686 687 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) 688 { 689 return 0; 690 } 691 692 #endif /* CONFIG_MISC_TILEBLITTING */ 693 694 695 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, 696 int unit, int oldidx) 697 { 698 struct fbcon_ops *ops = NULL; 699 int err = 0; 700 701 if (!try_module_get(info->fbops->owner)) 702 err = -ENODEV; 703 704 if (!err && info->fbops->fb_open && 705 info->fbops->fb_open(info, 0)) 706 err = -ENODEV; 707 708 if (!err) { 709 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 710 if (!ops) 711 err = -ENOMEM; 712 } 713 714 if (!err) { 715 ops->cur_blink_jiffies = HZ / 5; 716 ops->info = info; 717 info->fbcon_par = ops; 718 719 if (vc) 720 set_blitting_type(vc, info); 721 } 722 723 if (err) { 724 con2fb_map[unit] = oldidx; 725 module_put(info->fbops->owner); 726 } 727 728 return err; 729 } 730 731 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, 732 struct fb_info *newinfo, int unit, 733 int oldidx, int found) 734 { 735 struct fbcon_ops *ops = oldinfo->fbcon_par; 736 int err = 0, ret; 737 738 if (oldinfo->fbops->fb_release && 739 oldinfo->fbops->fb_release(oldinfo, 0)) { 740 con2fb_map[unit] = oldidx; 741 if (!found && newinfo->fbops->fb_release) 742 newinfo->fbops->fb_release(newinfo, 0); 743 if (!found) 744 module_put(newinfo->fbops->owner); 745 err = -ENODEV; 746 } 747 748 if (!err) { 749 fbcon_del_cursor_timer(oldinfo); 750 kfree(ops->cursor_state.mask); 751 kfree(ops->cursor_data); 752 kfree(ops->cursor_src); 753 kfree(ops->fontbuffer); 754 kfree(oldinfo->fbcon_par); 755 oldinfo->fbcon_par = NULL; 756 module_put(oldinfo->fbops->owner); 757 /* 758 If oldinfo and newinfo are driving the same hardware, 759 the fb_release() method of oldinfo may attempt to 760 restore the hardware state. This will leave the 761 newinfo in an undefined state. Thus, a call to 762 fb_set_par() may be needed for the newinfo. 763 */ 764 if (newinfo && newinfo->fbops->fb_set_par) { 765 ret = newinfo->fbops->fb_set_par(newinfo); 766 767 if (ret) 768 printk(KERN_ERR "con2fb_release_oldinfo: " 769 "detected unhandled fb_set_par error, " 770 "error code %d\n", ret); 771 } 772 } 773 774 return err; 775 } 776 777 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, 778 int unit, int show_logo) 779 { 780 struct fbcon_ops *ops = info->fbcon_par; 781 int ret; 782 783 ops->currcon = fg_console; 784 785 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { 786 ret = info->fbops->fb_set_par(info); 787 788 if (ret) 789 printk(KERN_ERR "con2fb_init_display: detected " 790 "unhandled fb_set_par error, " 791 "error code %d\n", ret); 792 } 793 794 ops->flags |= FBCON_FLAGS_INIT; 795 ops->graphics = 0; 796 fbcon_set_disp(info, &info->var, unit); 797 798 if (show_logo) { 799 struct vc_data *fg_vc = vc_cons[fg_console].d; 800 struct fb_info *fg_info = 801 registered_fb[con2fb_map[fg_console]]; 802 803 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, 804 fg_vc->vc_rows, fg_vc->vc_cols, 805 fg_vc->vc_rows); 806 } 807 808 update_screen(vc_cons[fg_console].d); 809 } 810 811 /** 812 * set_con2fb_map - map console to frame buffer device 813 * @unit: virtual console number to map 814 * @newidx: frame buffer index to map virtual console to 815 * @user: user request 816 * 817 * Maps a virtual console @unit to a frame buffer device 818 * @newidx. 819 * 820 * This should be called with the console lock held. 821 */ 822 static int set_con2fb_map(int unit, int newidx, int user) 823 { 824 struct vc_data *vc = vc_cons[unit].d; 825 int oldidx = con2fb_map[unit]; 826 struct fb_info *info = registered_fb[newidx]; 827 struct fb_info *oldinfo = NULL; 828 int found, err = 0; 829 830 if (oldidx == newidx) 831 return 0; 832 833 if (!info) 834 return -EINVAL; 835 836 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { 837 info_idx = newidx; 838 return do_fbcon_takeover(0); 839 } 840 841 if (oldidx != -1) 842 oldinfo = registered_fb[oldidx]; 843 844 found = search_fb_in_map(newidx); 845 846 con2fb_map[unit] = newidx; 847 if (!err && !found) 848 err = con2fb_acquire_newinfo(vc, info, unit, oldidx); 849 850 851 /* 852 * If old fb is not mapped to any of the consoles, 853 * fbcon should release it. 854 */ 855 if (!err && oldinfo && !search_fb_in_map(oldidx)) 856 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, 857 found); 858 859 if (!err) { 860 int show_logo = (fg_console == 0 && !user && 861 logo_shown != FBCON_LOGO_DONTSHOW); 862 863 if (!found) 864 fbcon_add_cursor_timer(info); 865 con2fb_map_boot[unit] = newidx; 866 con2fb_init_display(vc, info, unit, show_logo); 867 } 868 869 if (!search_fb_in_map(info_idx)) 870 info_idx = newidx; 871 872 return err; 873 } 874 875 /* 876 * Low Level Operations 877 */ 878 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ 879 static int var_to_display(struct display *disp, 880 struct fb_var_screeninfo *var, 881 struct fb_info *info) 882 { 883 disp->xres_virtual = var->xres_virtual; 884 disp->yres_virtual = var->yres_virtual; 885 disp->bits_per_pixel = var->bits_per_pixel; 886 disp->grayscale = var->grayscale; 887 disp->nonstd = var->nonstd; 888 disp->accel_flags = var->accel_flags; 889 disp->height = var->height; 890 disp->width = var->width; 891 disp->red = var->red; 892 disp->green = var->green; 893 disp->blue = var->blue; 894 disp->transp = var->transp; 895 disp->rotate = var->rotate; 896 disp->mode = fb_match_mode(var, &info->modelist); 897 if (disp->mode == NULL) 898 /* This should not happen */ 899 return -EINVAL; 900 return 0; 901 } 902 903 static void display_to_var(struct fb_var_screeninfo *var, 904 struct display *disp) 905 { 906 fb_videomode_to_var(var, disp->mode); 907 var->xres_virtual = disp->xres_virtual; 908 var->yres_virtual = disp->yres_virtual; 909 var->bits_per_pixel = disp->bits_per_pixel; 910 var->grayscale = disp->grayscale; 911 var->nonstd = disp->nonstd; 912 var->accel_flags = disp->accel_flags; 913 var->height = disp->height; 914 var->width = disp->width; 915 var->red = disp->red; 916 var->green = disp->green; 917 var->blue = disp->blue; 918 var->transp = disp->transp; 919 var->rotate = disp->rotate; 920 } 921 922 static const char *fbcon_startup(void) 923 { 924 const char *display_desc = "frame buffer device"; 925 struct display *p = &fb_display[fg_console]; 926 struct vc_data *vc = vc_cons[fg_console].d; 927 const struct font_desc *font = NULL; 928 struct module *owner; 929 struct fb_info *info = NULL; 930 struct fbcon_ops *ops; 931 int rows, cols; 932 933 /* 934 * If num_registered_fb is zero, this is a call for the dummy part. 935 * The frame buffer devices weren't initialized yet. 936 */ 937 if (!num_registered_fb || info_idx == -1) 938 return display_desc; 939 /* 940 * Instead of blindly using registered_fb[0], we use info_idx, set by 941 * fb_console_init(); 942 */ 943 info = registered_fb[info_idx]; 944 if (!info) 945 return NULL; 946 947 owner = info->fbops->owner; 948 if (!try_module_get(owner)) 949 return NULL; 950 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { 951 module_put(owner); 952 return NULL; 953 } 954 955 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); 956 if (!ops) { 957 module_put(owner); 958 return NULL; 959 } 960 961 ops->currcon = -1; 962 ops->graphics = 1; 963 ops->cur_rotate = -1; 964 ops->cur_blink_jiffies = HZ / 5; 965 ops->info = info; 966 info->fbcon_par = ops; 967 968 p->con_rotate = initial_rotation; 969 if (p->con_rotate == -1) 970 p->con_rotate = info->fbcon_rotate_hint; 971 if (p->con_rotate == -1) 972 p->con_rotate = FB_ROTATE_UR; 973 974 set_blitting_type(vc, info); 975 976 if (info->fix.type != FB_TYPE_TEXT) { 977 if (fbcon_softback_size) { 978 if (!softback_buf) { 979 softback_buf = 980 (unsigned long) 981 kmalloc(fbcon_softback_size, 982 GFP_KERNEL); 983 if (!softback_buf) { 984 fbcon_softback_size = 0; 985 softback_top = 0; 986 } 987 } 988 } else { 989 if (softback_buf) { 990 kfree((void *) softback_buf); 991 softback_buf = 0; 992 softback_top = 0; 993 } 994 } 995 if (softback_buf) 996 softback_in = softback_top = softback_curr = 997 softback_buf; 998 softback_lines = 0; 999 } 1000 1001 /* Setup default font */ 1002 if (!p->fontdata && !vc->vc_font.data) { 1003 if (!fontname[0] || !(font = find_font(fontname))) 1004 font = get_default_font(info->var.xres, 1005 info->var.yres, 1006 info->pixmap.blit_x, 1007 info->pixmap.blit_y); 1008 vc->vc_font.width = font->width; 1009 vc->vc_font.height = font->height; 1010 vc->vc_font.data = (void *)(p->fontdata = font->data); 1011 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ 1012 } else { 1013 p->fontdata = vc->vc_font.data; 1014 } 1015 1016 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1017 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1018 cols /= vc->vc_font.width; 1019 rows /= vc->vc_font.height; 1020 vc_resize(vc, cols, rows); 1021 1022 DPRINTK("mode: %s\n", info->fix.id); 1023 DPRINTK("visual: %d\n", info->fix.visual); 1024 DPRINTK("res: %dx%d-%d\n", info->var.xres, 1025 info->var.yres, 1026 info->var.bits_per_pixel); 1027 1028 fbcon_add_cursor_timer(info); 1029 fbcon_has_exited = 0; 1030 return display_desc; 1031 } 1032 1033 static void fbcon_init(struct vc_data *vc, int init) 1034 { 1035 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1036 struct fbcon_ops *ops; 1037 struct vc_data **default_mode = vc->vc_display_fg; 1038 struct vc_data *svc = *default_mode; 1039 struct display *t, *p = &fb_display[vc->vc_num]; 1040 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; 1041 int cap, ret; 1042 1043 if (info_idx == -1 || info == NULL) 1044 return; 1045 1046 cap = info->flags; 1047 1048 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || 1049 (info->fix.type == FB_TYPE_TEXT)) 1050 logo = 0; 1051 1052 if (var_to_display(p, &info->var, info)) 1053 return; 1054 1055 if (!info->fbcon_par) 1056 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); 1057 1058 /* If we are not the first console on this 1059 fb, copy the font from that console */ 1060 t = &fb_display[fg_console]; 1061 if (!p->fontdata) { 1062 if (t->fontdata) { 1063 struct vc_data *fvc = vc_cons[fg_console].d; 1064 1065 vc->vc_font.data = (void *)(p->fontdata = 1066 fvc->vc_font.data); 1067 vc->vc_font.width = fvc->vc_font.width; 1068 vc->vc_font.height = fvc->vc_font.height; 1069 p->userfont = t->userfont; 1070 1071 if (p->userfont) 1072 REFCOUNT(p->fontdata)++; 1073 } else { 1074 const struct font_desc *font = NULL; 1075 1076 if (!fontname[0] || !(font = find_font(fontname))) 1077 font = get_default_font(info->var.xres, 1078 info->var.yres, 1079 info->pixmap.blit_x, 1080 info->pixmap.blit_y); 1081 vc->vc_font.width = font->width; 1082 vc->vc_font.height = font->height; 1083 vc->vc_font.data = (void *)(p->fontdata = font->data); 1084 vc->vc_font.charcount = 256; /* FIXME Need to 1085 support more fonts */ 1086 } 1087 } 1088 1089 if (p->userfont) 1090 charcnt = FNTCHARCNT(p->fontdata); 1091 1092 vc->vc_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT); 1093 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1094 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1095 if (charcnt == 256) { 1096 vc->vc_hi_font_mask = 0; 1097 } else { 1098 vc->vc_hi_font_mask = 0x100; 1099 if (vc->vc_can_do_color) 1100 vc->vc_complement_mask <<= 1; 1101 } 1102 1103 if (!*svc->vc_uni_pagedir_loc) 1104 con_set_default_unimap(svc); 1105 if (!*vc->vc_uni_pagedir_loc) 1106 con_copy_unimap(vc, svc); 1107 1108 ops = info->fbcon_par; 1109 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1110 1111 p->con_rotate = initial_rotation; 1112 if (p->con_rotate == -1) 1113 p->con_rotate = info->fbcon_rotate_hint; 1114 if (p->con_rotate == -1) 1115 p->con_rotate = FB_ROTATE_UR; 1116 1117 set_blitting_type(vc, info); 1118 1119 cols = vc->vc_cols; 1120 rows = vc->vc_rows; 1121 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1122 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1123 new_cols /= vc->vc_font.width; 1124 new_rows /= vc->vc_font.height; 1125 1126 /* 1127 * We must always set the mode. The mode of the previous console 1128 * driver could be in the same resolution but we are using different 1129 * hardware so we have to initialize the hardware. 1130 * 1131 * We need to do it in fbcon_init() to prevent screen corruption. 1132 */ 1133 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { 1134 if (info->fbops->fb_set_par && 1135 !(ops->flags & FBCON_FLAGS_INIT)) { 1136 ret = info->fbops->fb_set_par(info); 1137 1138 if (ret) 1139 printk(KERN_ERR "fbcon_init: detected " 1140 "unhandled fb_set_par error, " 1141 "error code %d\n", ret); 1142 } 1143 1144 ops->flags |= FBCON_FLAGS_INIT; 1145 } 1146 1147 ops->graphics = 0; 1148 1149 if ((cap & FBINFO_HWACCEL_COPYAREA) && 1150 !(cap & FBINFO_HWACCEL_DISABLED)) 1151 p->scrollmode = SCROLL_MOVE; 1152 else /* default to something safe */ 1153 p->scrollmode = SCROLL_REDRAW; 1154 1155 /* 1156 * ++guenther: console.c:vc_allocate() relies on initializing 1157 * vc_{cols,rows}, but we must not set those if we are only 1158 * resizing the console. 1159 */ 1160 if (init) { 1161 vc->vc_cols = new_cols; 1162 vc->vc_rows = new_rows; 1163 } else 1164 vc_resize(vc, new_cols, new_rows); 1165 1166 if (logo) 1167 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); 1168 1169 if (vc == svc && softback_buf) 1170 fbcon_update_softback(vc); 1171 1172 if (ops->rotate_font && ops->rotate_font(info, vc)) { 1173 ops->rotate = FB_ROTATE_UR; 1174 set_blitting_type(vc, info); 1175 } 1176 1177 ops->p = &fb_display[fg_console]; 1178 } 1179 1180 static void fbcon_free_font(struct display *p, bool freefont) 1181 { 1182 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) 1183 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); 1184 p->fontdata = NULL; 1185 p->userfont = 0; 1186 } 1187 1188 static void set_vc_hi_font(struct vc_data *vc, bool set); 1189 1190 static void fbcon_deinit(struct vc_data *vc) 1191 { 1192 struct display *p = &fb_display[vc->vc_num]; 1193 struct fb_info *info; 1194 struct fbcon_ops *ops; 1195 int idx; 1196 bool free_font = true; 1197 1198 idx = con2fb_map[vc->vc_num]; 1199 1200 if (idx == -1) 1201 goto finished; 1202 1203 info = registered_fb[idx]; 1204 1205 if (!info) 1206 goto finished; 1207 1208 if (info->flags & FBINFO_MISC_FIRMWARE) 1209 free_font = false; 1210 ops = info->fbcon_par; 1211 1212 if (!ops) 1213 goto finished; 1214 1215 if (con_is_visible(vc)) 1216 fbcon_del_cursor_timer(info); 1217 1218 ops->flags &= ~FBCON_FLAGS_INIT; 1219 finished: 1220 1221 fbcon_free_font(p, free_font); 1222 if (free_font) 1223 vc->vc_font.data = NULL; 1224 1225 if (vc->vc_hi_font_mask) 1226 set_vc_hi_font(vc, false); 1227 1228 if (!con_is_bound(&fb_con)) 1229 fbcon_exit(); 1230 1231 return; 1232 } 1233 1234 /* ====================================================================== */ 1235 1236 /* fbcon_XXX routines - interface used by the world 1237 * 1238 * This system is now divided into two levels because of complications 1239 * caused by hardware scrolling. Top level functions: 1240 * 1241 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() 1242 * 1243 * handles y values in range [0, scr_height-1] that correspond to real 1244 * screen positions. y_wrap shift means that first line of bitmap may be 1245 * anywhere on this display. These functions convert lineoffsets to 1246 * bitmap offsets and deal with the wrap-around case by splitting blits. 1247 * 1248 * fbcon_bmove_physical_8() -- These functions fast implementations 1249 * fbcon_clear_physical_8() -- of original fbcon_XXX fns. 1250 * fbcon_putc_physical_8() -- (font width != 8) may be added later 1251 * 1252 * WARNING: 1253 * 1254 * At the moment fbcon_putc() cannot blit across vertical wrap boundary 1255 * Implies should only really hardware scroll in rows. Only reason for 1256 * restriction is simplicity & efficiency at the moment. 1257 */ 1258 1259 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, 1260 int width) 1261 { 1262 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1263 struct fbcon_ops *ops = info->fbcon_par; 1264 1265 struct display *p = &fb_display[vc->vc_num]; 1266 u_int y_break; 1267 1268 if (fbcon_is_inactive(vc, info)) 1269 return; 1270 1271 if (!height || !width) 1272 return; 1273 1274 if (sy < vc->vc_top && vc->vc_top == logo_lines) { 1275 vc->vc_top = 0; 1276 /* 1277 * If the font dimensions are not an integral of the display 1278 * dimensions then the ops->clear below won't end up clearing 1279 * the margins. Call clear_margins here in case the logo 1280 * bitmap stretched into the margin area. 1281 */ 1282 fbcon_clear_margins(vc, 0); 1283 } 1284 1285 /* Split blits that cross physical y_wrap boundary */ 1286 1287 y_break = p->vrows - p->yscroll; 1288 if (sy < y_break && sy + height - 1 >= y_break) { 1289 u_int b = y_break - sy; 1290 ops->clear(vc, info, real_y(p, sy), sx, b, width); 1291 ops->clear(vc, info, real_y(p, sy + b), sx, height - b, 1292 width); 1293 } else 1294 ops->clear(vc, info, real_y(p, sy), sx, height, width); 1295 } 1296 1297 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, 1298 int count, int ypos, int xpos) 1299 { 1300 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1301 struct display *p = &fb_display[vc->vc_num]; 1302 struct fbcon_ops *ops = info->fbcon_par; 1303 1304 if (!fbcon_is_inactive(vc, info)) 1305 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, 1306 get_color(vc, info, scr_readw(s), 1), 1307 get_color(vc, info, scr_readw(s), 0)); 1308 } 1309 1310 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) 1311 { 1312 unsigned short chr; 1313 1314 scr_writew(c, &chr); 1315 fbcon_putcs(vc, &chr, 1, ypos, xpos); 1316 } 1317 1318 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) 1319 { 1320 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1321 struct fbcon_ops *ops = info->fbcon_par; 1322 1323 if (!fbcon_is_inactive(vc, info)) 1324 ops->clear_margins(vc, info, margin_color, bottom_only); 1325 } 1326 1327 static void fbcon_cursor(struct vc_data *vc, int mode) 1328 { 1329 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1330 struct fbcon_ops *ops = info->fbcon_par; 1331 int y; 1332 int c = scr_readw((u16 *) vc->vc_pos); 1333 1334 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); 1335 1336 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) 1337 return; 1338 1339 if (vc->vc_cursor_type & 0x10) 1340 fbcon_del_cursor_timer(info); 1341 else 1342 fbcon_add_cursor_timer(info); 1343 1344 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; 1345 if (mode & CM_SOFTBACK) { 1346 mode &= ~CM_SOFTBACK; 1347 y = softback_lines; 1348 } else { 1349 if (softback_lines) 1350 fbcon_set_origin(vc); 1351 y = 0; 1352 } 1353 1354 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), 1355 get_color(vc, info, c, 0)); 1356 } 1357 1358 static int scrollback_phys_max = 0; 1359 static int scrollback_max = 0; 1360 static int scrollback_current = 0; 1361 1362 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, 1363 int unit) 1364 { 1365 struct display *p, *t; 1366 struct vc_data **default_mode, *vc; 1367 struct vc_data *svc; 1368 struct fbcon_ops *ops = info->fbcon_par; 1369 int rows, cols, charcnt = 256; 1370 1371 p = &fb_display[unit]; 1372 1373 if (var_to_display(p, var, info)) 1374 return; 1375 1376 vc = vc_cons[unit].d; 1377 1378 if (!vc) 1379 return; 1380 1381 default_mode = vc->vc_display_fg; 1382 svc = *default_mode; 1383 t = &fb_display[svc->vc_num]; 1384 1385 if (!vc->vc_font.data) { 1386 vc->vc_font.data = (void *)(p->fontdata = t->fontdata); 1387 vc->vc_font.width = (*default_mode)->vc_font.width; 1388 vc->vc_font.height = (*default_mode)->vc_font.height; 1389 p->userfont = t->userfont; 1390 if (p->userfont) 1391 REFCOUNT(p->fontdata)++; 1392 } 1393 if (p->userfont) 1394 charcnt = FNTCHARCNT(p->fontdata); 1395 1396 var->activate = FB_ACTIVATE_NOW; 1397 info->var.activate = var->activate; 1398 var->yoffset = info->var.yoffset; 1399 var->xoffset = info->var.xoffset; 1400 fb_set_var(info, var); 1401 ops->var = info->var; 1402 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 1403 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 1404 if (charcnt == 256) { 1405 vc->vc_hi_font_mask = 0; 1406 } else { 1407 vc->vc_hi_font_mask = 0x100; 1408 if (vc->vc_can_do_color) 1409 vc->vc_complement_mask <<= 1; 1410 } 1411 1412 if (!*svc->vc_uni_pagedir_loc) 1413 con_set_default_unimap(svc); 1414 if (!*vc->vc_uni_pagedir_loc) 1415 con_copy_unimap(vc, svc); 1416 1417 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 1418 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 1419 cols /= vc->vc_font.width; 1420 rows /= vc->vc_font.height; 1421 vc_resize(vc, cols, rows); 1422 1423 if (con_is_visible(vc)) { 1424 update_screen(vc); 1425 if (softback_buf) 1426 fbcon_update_softback(vc); 1427 } 1428 } 1429 1430 static __inline__ void ywrap_up(struct vc_data *vc, int count) 1431 { 1432 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1433 struct fbcon_ops *ops = info->fbcon_par; 1434 struct display *p = &fb_display[vc->vc_num]; 1435 1436 p->yscroll += count; 1437 if (p->yscroll >= p->vrows) /* Deal with wrap */ 1438 p->yscroll -= p->vrows; 1439 ops->var.xoffset = 0; 1440 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1441 ops->var.vmode |= FB_VMODE_YWRAP; 1442 ops->update_start(info); 1443 scrollback_max += count; 1444 if (scrollback_max > scrollback_phys_max) 1445 scrollback_max = scrollback_phys_max; 1446 scrollback_current = 0; 1447 } 1448 1449 static __inline__ void ywrap_down(struct vc_data *vc, int count) 1450 { 1451 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1452 struct fbcon_ops *ops = info->fbcon_par; 1453 struct display *p = &fb_display[vc->vc_num]; 1454 1455 p->yscroll -= count; 1456 if (p->yscroll < 0) /* Deal with wrap */ 1457 p->yscroll += p->vrows; 1458 ops->var.xoffset = 0; 1459 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1460 ops->var.vmode |= FB_VMODE_YWRAP; 1461 ops->update_start(info); 1462 scrollback_max -= count; 1463 if (scrollback_max < 0) 1464 scrollback_max = 0; 1465 scrollback_current = 0; 1466 } 1467 1468 static __inline__ void ypan_up(struct vc_data *vc, int count) 1469 { 1470 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1471 struct display *p = &fb_display[vc->vc_num]; 1472 struct fbcon_ops *ops = info->fbcon_par; 1473 1474 p->yscroll += count; 1475 if (p->yscroll > p->vrows - vc->vc_rows) { 1476 ops->bmove(vc, info, p->vrows - vc->vc_rows, 1477 0, 0, 0, vc->vc_rows, vc->vc_cols); 1478 p->yscroll -= p->vrows - vc->vc_rows; 1479 } 1480 1481 ops->var.xoffset = 0; 1482 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1483 ops->var.vmode &= ~FB_VMODE_YWRAP; 1484 ops->update_start(info); 1485 fbcon_clear_margins(vc, 1); 1486 scrollback_max += count; 1487 if (scrollback_max > scrollback_phys_max) 1488 scrollback_max = scrollback_phys_max; 1489 scrollback_current = 0; 1490 } 1491 1492 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) 1493 { 1494 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1495 struct fbcon_ops *ops = info->fbcon_par; 1496 struct display *p = &fb_display[vc->vc_num]; 1497 1498 p->yscroll += count; 1499 1500 if (p->yscroll > p->vrows - vc->vc_rows) { 1501 p->yscroll -= p->vrows - vc->vc_rows; 1502 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); 1503 } 1504 1505 ops->var.xoffset = 0; 1506 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1507 ops->var.vmode &= ~FB_VMODE_YWRAP; 1508 ops->update_start(info); 1509 fbcon_clear_margins(vc, 1); 1510 scrollback_max += count; 1511 if (scrollback_max > scrollback_phys_max) 1512 scrollback_max = scrollback_phys_max; 1513 scrollback_current = 0; 1514 } 1515 1516 static __inline__ void ypan_down(struct vc_data *vc, int count) 1517 { 1518 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1519 struct display *p = &fb_display[vc->vc_num]; 1520 struct fbcon_ops *ops = info->fbcon_par; 1521 1522 p->yscroll -= count; 1523 if (p->yscroll < 0) { 1524 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 1525 0, vc->vc_rows, vc->vc_cols); 1526 p->yscroll += p->vrows - vc->vc_rows; 1527 } 1528 1529 ops->var.xoffset = 0; 1530 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1531 ops->var.vmode &= ~FB_VMODE_YWRAP; 1532 ops->update_start(info); 1533 fbcon_clear_margins(vc, 1); 1534 scrollback_max -= count; 1535 if (scrollback_max < 0) 1536 scrollback_max = 0; 1537 scrollback_current = 0; 1538 } 1539 1540 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) 1541 { 1542 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1543 struct fbcon_ops *ops = info->fbcon_par; 1544 struct display *p = &fb_display[vc->vc_num]; 1545 1546 p->yscroll -= count; 1547 1548 if (p->yscroll < 0) { 1549 p->yscroll += p->vrows - vc->vc_rows; 1550 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); 1551 } 1552 1553 ops->var.xoffset = 0; 1554 ops->var.yoffset = p->yscroll * vc->vc_font.height; 1555 ops->var.vmode &= ~FB_VMODE_YWRAP; 1556 ops->update_start(info); 1557 fbcon_clear_margins(vc, 1); 1558 scrollback_max -= count; 1559 if (scrollback_max < 0) 1560 scrollback_max = 0; 1561 scrollback_current = 0; 1562 } 1563 1564 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, 1565 long delta) 1566 { 1567 int count = vc->vc_rows; 1568 unsigned short *d, *s; 1569 unsigned long n; 1570 int line = 0; 1571 1572 d = (u16 *) softback_curr; 1573 if (d == (u16 *) softback_in) 1574 d = (u16 *) vc->vc_origin; 1575 n = softback_curr + delta * vc->vc_size_row; 1576 softback_lines -= delta; 1577 if (delta < 0) { 1578 if (softback_curr < softback_top && n < softback_buf) { 1579 n += softback_end - softback_buf; 1580 if (n < softback_top) { 1581 softback_lines -= 1582 (softback_top - n) / vc->vc_size_row; 1583 n = softback_top; 1584 } 1585 } else if (softback_curr >= softback_top 1586 && n < softback_top) { 1587 softback_lines -= 1588 (softback_top - n) / vc->vc_size_row; 1589 n = softback_top; 1590 } 1591 } else { 1592 if (softback_curr > softback_in && n >= softback_end) { 1593 n += softback_buf - softback_end; 1594 if (n > softback_in) { 1595 n = softback_in; 1596 softback_lines = 0; 1597 } 1598 } else if (softback_curr <= softback_in && n > softback_in) { 1599 n = softback_in; 1600 softback_lines = 0; 1601 } 1602 } 1603 if (n == softback_curr) 1604 return; 1605 softback_curr = n; 1606 s = (u16 *) softback_curr; 1607 if (s == (u16 *) softback_in) 1608 s = (u16 *) vc->vc_origin; 1609 while (count--) { 1610 unsigned short *start; 1611 unsigned short *le; 1612 unsigned short c; 1613 int x = 0; 1614 unsigned short attr = 1; 1615 1616 start = s; 1617 le = advance_row(s, 1); 1618 do { 1619 c = scr_readw(s); 1620 if (attr != (c & 0xff00)) { 1621 attr = c & 0xff00; 1622 if (s > start) { 1623 fbcon_putcs(vc, start, s - start, 1624 line, x); 1625 x += s - start; 1626 start = s; 1627 } 1628 } 1629 if (c == scr_readw(d)) { 1630 if (s > start) { 1631 fbcon_putcs(vc, start, s - start, 1632 line, x); 1633 x += s - start + 1; 1634 start = s + 1; 1635 } else { 1636 x++; 1637 start++; 1638 } 1639 } 1640 s++; 1641 d++; 1642 } while (s < le); 1643 if (s > start) 1644 fbcon_putcs(vc, start, s - start, line, x); 1645 line++; 1646 if (d == (u16 *) softback_end) 1647 d = (u16 *) softback_buf; 1648 if (d == (u16 *) softback_in) 1649 d = (u16 *) vc->vc_origin; 1650 if (s == (u16 *) softback_end) 1651 s = (u16 *) softback_buf; 1652 if (s == (u16 *) softback_in) 1653 s = (u16 *) vc->vc_origin; 1654 } 1655 } 1656 1657 static void fbcon_redraw_move(struct vc_data *vc, struct display *p, 1658 int line, int count, int dy) 1659 { 1660 unsigned short *s = (unsigned short *) 1661 (vc->vc_origin + vc->vc_size_row * line); 1662 1663 while (count--) { 1664 unsigned short *start = s; 1665 unsigned short *le = advance_row(s, 1); 1666 unsigned short c; 1667 int x = 0; 1668 unsigned short attr = 1; 1669 1670 do { 1671 c = scr_readw(s); 1672 if (attr != (c & 0xff00)) { 1673 attr = c & 0xff00; 1674 if (s > start) { 1675 fbcon_putcs(vc, start, s - start, 1676 dy, x); 1677 x += s - start; 1678 start = s; 1679 } 1680 } 1681 console_conditional_schedule(); 1682 s++; 1683 } while (s < le); 1684 if (s > start) 1685 fbcon_putcs(vc, start, s - start, dy, x); 1686 console_conditional_schedule(); 1687 dy++; 1688 } 1689 } 1690 1691 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, 1692 struct display *p, int line, int count, int ycount) 1693 { 1694 int offset = ycount * vc->vc_cols; 1695 unsigned short *d = (unsigned short *) 1696 (vc->vc_origin + vc->vc_size_row * line); 1697 unsigned short *s = d + offset; 1698 struct fbcon_ops *ops = info->fbcon_par; 1699 1700 while (count--) { 1701 unsigned short *start = s; 1702 unsigned short *le = advance_row(s, 1); 1703 unsigned short c; 1704 int x = 0; 1705 1706 do { 1707 c = scr_readw(s); 1708 1709 if (c == scr_readw(d)) { 1710 if (s > start) { 1711 ops->bmove(vc, info, line + ycount, x, 1712 line, x, 1, s-start); 1713 x += s - start + 1; 1714 start = s + 1; 1715 } else { 1716 x++; 1717 start++; 1718 } 1719 } 1720 1721 scr_writew(c, d); 1722 console_conditional_schedule(); 1723 s++; 1724 d++; 1725 } while (s < le); 1726 if (s > start) 1727 ops->bmove(vc, info, line + ycount, x, line, x, 1, 1728 s-start); 1729 console_conditional_schedule(); 1730 if (ycount > 0) 1731 line++; 1732 else { 1733 line--; 1734 /* NOTE: We subtract two lines from these pointers */ 1735 s -= vc->vc_size_row; 1736 d -= vc->vc_size_row; 1737 } 1738 } 1739 } 1740 1741 static void fbcon_redraw(struct vc_data *vc, struct display *p, 1742 int line, int count, int offset) 1743 { 1744 unsigned short *d = (unsigned short *) 1745 (vc->vc_origin + vc->vc_size_row * line); 1746 unsigned short *s = d + offset; 1747 1748 while (count--) { 1749 unsigned short *start = s; 1750 unsigned short *le = advance_row(s, 1); 1751 unsigned short c; 1752 int x = 0; 1753 unsigned short attr = 1; 1754 1755 do { 1756 c = scr_readw(s); 1757 if (attr != (c & 0xff00)) { 1758 attr = c & 0xff00; 1759 if (s > start) { 1760 fbcon_putcs(vc, start, s - start, 1761 line, x); 1762 x += s - start; 1763 start = s; 1764 } 1765 } 1766 if (c == scr_readw(d)) { 1767 if (s > start) { 1768 fbcon_putcs(vc, start, s - start, 1769 line, x); 1770 x += s - start + 1; 1771 start = s + 1; 1772 } else { 1773 x++; 1774 start++; 1775 } 1776 } 1777 scr_writew(c, d); 1778 console_conditional_schedule(); 1779 s++; 1780 d++; 1781 } while (s < le); 1782 if (s > start) 1783 fbcon_putcs(vc, start, s - start, line, x); 1784 console_conditional_schedule(); 1785 if (offset > 0) 1786 line++; 1787 else { 1788 line--; 1789 /* NOTE: We subtract two lines from these pointers */ 1790 s -= vc->vc_size_row; 1791 d -= vc->vc_size_row; 1792 } 1793 } 1794 } 1795 1796 static inline void fbcon_softback_note(struct vc_data *vc, int t, 1797 int count) 1798 { 1799 unsigned short *p; 1800 1801 if (vc->vc_num != fg_console) 1802 return; 1803 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); 1804 1805 while (count) { 1806 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); 1807 count--; 1808 p = advance_row(p, 1); 1809 softback_in += vc->vc_size_row; 1810 if (softback_in == softback_end) 1811 softback_in = softback_buf; 1812 if (softback_in == softback_top) { 1813 softback_top += vc->vc_size_row; 1814 if (softback_top == softback_end) 1815 softback_top = softback_buf; 1816 } 1817 } 1818 softback_curr = softback_in; 1819 } 1820 1821 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 1822 enum con_scroll dir, unsigned int count) 1823 { 1824 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 1825 struct display *p = &fb_display[vc->vc_num]; 1826 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; 1827 1828 if (fbcon_is_inactive(vc, info)) 1829 return true; 1830 1831 fbcon_cursor(vc, CM_ERASE); 1832 1833 /* 1834 * ++Geert: Only use ywrap/ypan if the console is in text mode 1835 * ++Andrew: Only use ypan on hardware text mode when scrolling the 1836 * whole screen (prevents flicker). 1837 */ 1838 1839 switch (dir) { 1840 case SM_UP: 1841 if (count > vc->vc_rows) /* Maximum realistic size */ 1842 count = vc->vc_rows; 1843 if (softback_top) 1844 fbcon_softback_note(vc, t, count); 1845 if (logo_shown >= 0) 1846 goto redraw_up; 1847 switch (p->scrollmode) { 1848 case SCROLL_MOVE: 1849 fbcon_redraw_blit(vc, info, p, t, b - t - count, 1850 count); 1851 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1852 scr_memsetw((unsigned short *) (vc->vc_origin + 1853 vc->vc_size_row * 1854 (b - count)), 1855 vc->vc_video_erase_char, 1856 vc->vc_size_row * count); 1857 return true; 1858 break; 1859 1860 case SCROLL_WRAP_MOVE: 1861 if (b - t - count > 3 * vc->vc_rows >> 2) { 1862 if (t > 0) 1863 fbcon_bmove(vc, 0, 0, count, 0, t, 1864 vc->vc_cols); 1865 ywrap_up(vc, count); 1866 if (vc->vc_rows - b > 0) 1867 fbcon_bmove(vc, b - count, 0, b, 0, 1868 vc->vc_rows - b, 1869 vc->vc_cols); 1870 } else if (info->flags & FBINFO_READS_FAST) 1871 fbcon_bmove(vc, t + count, 0, t, 0, 1872 b - t - count, vc->vc_cols); 1873 else 1874 goto redraw_up; 1875 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1876 break; 1877 1878 case SCROLL_PAN_REDRAW: 1879 if ((p->yscroll + count <= 1880 2 * (p->vrows - vc->vc_rows)) 1881 && ((!scroll_partial && (b - t == vc->vc_rows)) 1882 || (scroll_partial 1883 && (b - t - count > 1884 3 * vc->vc_rows >> 2)))) { 1885 if (t > 0) 1886 fbcon_redraw_move(vc, p, 0, t, count); 1887 ypan_up_redraw(vc, t, count); 1888 if (vc->vc_rows - b > 0) 1889 fbcon_redraw_move(vc, p, b, 1890 vc->vc_rows - b, b); 1891 } else 1892 fbcon_redraw_move(vc, p, t + count, b - t - count, t); 1893 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1894 break; 1895 1896 case SCROLL_PAN_MOVE: 1897 if ((p->yscroll + count <= 1898 2 * (p->vrows - vc->vc_rows)) 1899 && ((!scroll_partial && (b - t == vc->vc_rows)) 1900 || (scroll_partial 1901 && (b - t - count > 1902 3 * vc->vc_rows >> 2)))) { 1903 if (t > 0) 1904 fbcon_bmove(vc, 0, 0, count, 0, t, 1905 vc->vc_cols); 1906 ypan_up(vc, count); 1907 if (vc->vc_rows - b > 0) 1908 fbcon_bmove(vc, b - count, 0, b, 0, 1909 vc->vc_rows - b, 1910 vc->vc_cols); 1911 } else if (info->flags & FBINFO_READS_FAST) 1912 fbcon_bmove(vc, t + count, 0, t, 0, 1913 b - t - count, vc->vc_cols); 1914 else 1915 goto redraw_up; 1916 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1917 break; 1918 1919 case SCROLL_REDRAW: 1920 redraw_up: 1921 fbcon_redraw(vc, p, t, b - t - count, 1922 count * vc->vc_cols); 1923 fbcon_clear(vc, b - count, 0, count, vc->vc_cols); 1924 scr_memsetw((unsigned short *) (vc->vc_origin + 1925 vc->vc_size_row * 1926 (b - count)), 1927 vc->vc_video_erase_char, 1928 vc->vc_size_row * count); 1929 return true; 1930 } 1931 break; 1932 1933 case SM_DOWN: 1934 if (count > vc->vc_rows) /* Maximum realistic size */ 1935 count = vc->vc_rows; 1936 if (logo_shown >= 0) 1937 goto redraw_down; 1938 switch (p->scrollmode) { 1939 case SCROLL_MOVE: 1940 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, 1941 -count); 1942 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1943 scr_memsetw((unsigned short *) (vc->vc_origin + 1944 vc->vc_size_row * 1945 t), 1946 vc->vc_video_erase_char, 1947 vc->vc_size_row * count); 1948 return true; 1949 break; 1950 1951 case SCROLL_WRAP_MOVE: 1952 if (b - t - count > 3 * vc->vc_rows >> 2) { 1953 if (vc->vc_rows - b > 0) 1954 fbcon_bmove(vc, b, 0, b - count, 0, 1955 vc->vc_rows - b, 1956 vc->vc_cols); 1957 ywrap_down(vc, count); 1958 if (t > 0) 1959 fbcon_bmove(vc, count, 0, 0, 0, t, 1960 vc->vc_cols); 1961 } else if (info->flags & FBINFO_READS_FAST) 1962 fbcon_bmove(vc, t, 0, t + count, 0, 1963 b - t - count, vc->vc_cols); 1964 else 1965 goto redraw_down; 1966 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1967 break; 1968 1969 case SCROLL_PAN_MOVE: 1970 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1971 && ((!scroll_partial && (b - t == vc->vc_rows)) 1972 || (scroll_partial 1973 && (b - t - count > 1974 3 * vc->vc_rows >> 2)))) { 1975 if (vc->vc_rows - b > 0) 1976 fbcon_bmove(vc, b, 0, b - count, 0, 1977 vc->vc_rows - b, 1978 vc->vc_cols); 1979 ypan_down(vc, count); 1980 if (t > 0) 1981 fbcon_bmove(vc, count, 0, 0, 0, t, 1982 vc->vc_cols); 1983 } else if (info->flags & FBINFO_READS_FAST) 1984 fbcon_bmove(vc, t, 0, t + count, 0, 1985 b - t - count, vc->vc_cols); 1986 else 1987 goto redraw_down; 1988 fbcon_clear(vc, t, 0, count, vc->vc_cols); 1989 break; 1990 1991 case SCROLL_PAN_REDRAW: 1992 if ((count - p->yscroll <= p->vrows - vc->vc_rows) 1993 && ((!scroll_partial && (b - t == vc->vc_rows)) 1994 || (scroll_partial 1995 && (b - t - count > 1996 3 * vc->vc_rows >> 2)))) { 1997 if (vc->vc_rows - b > 0) 1998 fbcon_redraw_move(vc, p, b, vc->vc_rows - b, 1999 b - count); 2000 ypan_down_redraw(vc, t, count); 2001 if (t > 0) 2002 fbcon_redraw_move(vc, p, count, t, 0); 2003 } else 2004 fbcon_redraw_move(vc, p, t, b - t - count, t + count); 2005 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2006 break; 2007 2008 case SCROLL_REDRAW: 2009 redraw_down: 2010 fbcon_redraw(vc, p, b - 1, b - t - count, 2011 -count * vc->vc_cols); 2012 fbcon_clear(vc, t, 0, count, vc->vc_cols); 2013 scr_memsetw((unsigned short *) (vc->vc_origin + 2014 vc->vc_size_row * 2015 t), 2016 vc->vc_video_erase_char, 2017 vc->vc_size_row * count); 2018 return true; 2019 } 2020 } 2021 return false; 2022 } 2023 2024 2025 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, 2026 int height, int width) 2027 { 2028 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2029 struct display *p = &fb_display[vc->vc_num]; 2030 2031 if (fbcon_is_inactive(vc, info)) 2032 return; 2033 2034 if (!width || !height) 2035 return; 2036 2037 /* Split blits that cross physical y_wrap case. 2038 * Pathological case involves 4 blits, better to use recursive 2039 * code rather than unrolled case 2040 * 2041 * Recursive invocations don't need to erase the cursor over and 2042 * over again, so we use fbcon_bmove_rec() 2043 */ 2044 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, 2045 p->vrows - p->yscroll); 2046 } 2047 2048 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, 2049 int dy, int dx, int height, int width, u_int y_break) 2050 { 2051 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2052 struct fbcon_ops *ops = info->fbcon_par; 2053 u_int b; 2054 2055 if (sy < y_break && sy + height > y_break) { 2056 b = y_break - sy; 2057 if (dy < sy) { /* Avoid trashing self */ 2058 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2059 y_break); 2060 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2061 height - b, width, y_break); 2062 } else { 2063 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2064 height - b, width, y_break); 2065 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2066 y_break); 2067 } 2068 return; 2069 } 2070 2071 if (dy < y_break && dy + height > y_break) { 2072 b = y_break - dy; 2073 if (dy < sy) { /* Avoid trashing self */ 2074 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2075 y_break); 2076 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2077 height - b, width, y_break); 2078 } else { 2079 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, 2080 height - b, width, y_break); 2081 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, 2082 y_break); 2083 } 2084 return; 2085 } 2086 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, 2087 height, width); 2088 } 2089 2090 static void updatescrollmode(struct display *p, 2091 struct fb_info *info, 2092 struct vc_data *vc) 2093 { 2094 struct fbcon_ops *ops = info->fbcon_par; 2095 int fh = vc->vc_font.height; 2096 int cap = info->flags; 2097 u16 t = 0; 2098 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, 2099 info->fix.xpanstep); 2100 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); 2101 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2102 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, 2103 info->var.xres_virtual); 2104 int good_pan = (cap & FBINFO_HWACCEL_YPAN) && 2105 divides(ypan, vc->vc_font.height) && vyres > yres; 2106 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && 2107 divides(ywrap, vc->vc_font.height) && 2108 divides(vc->vc_font.height, vyres) && 2109 divides(vc->vc_font.height, yres); 2110 int reading_fast = cap & FBINFO_READS_FAST; 2111 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && 2112 !(cap & FBINFO_HWACCEL_DISABLED); 2113 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && 2114 !(cap & FBINFO_HWACCEL_DISABLED); 2115 2116 p->vrows = vyres/fh; 2117 if (yres > (fh * (vc->vc_rows + 1))) 2118 p->vrows -= (yres - (fh * vc->vc_rows)) / fh; 2119 if ((yres % fh) && (vyres % fh < yres % fh)) 2120 p->vrows--; 2121 2122 if (good_wrap || good_pan) { 2123 if (reading_fast || fast_copyarea) 2124 p->scrollmode = good_wrap ? 2125 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; 2126 else 2127 p->scrollmode = good_wrap ? SCROLL_REDRAW : 2128 SCROLL_PAN_REDRAW; 2129 } else { 2130 if (reading_fast || (fast_copyarea && !fast_imageblit)) 2131 p->scrollmode = SCROLL_MOVE; 2132 else 2133 p->scrollmode = SCROLL_REDRAW; 2134 } 2135 } 2136 2137 static int fbcon_resize(struct vc_data *vc, unsigned int width, 2138 unsigned int height, unsigned int user) 2139 { 2140 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2141 struct fbcon_ops *ops = info->fbcon_par; 2142 struct display *p = &fb_display[vc->vc_num]; 2143 struct fb_var_screeninfo var = info->var; 2144 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; 2145 2146 virt_w = FBCON_SWAP(ops->rotate, width, height); 2147 virt_h = FBCON_SWAP(ops->rotate, height, width); 2148 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, 2149 vc->vc_font.height); 2150 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, 2151 vc->vc_font.width); 2152 var.xres = virt_w * virt_fw; 2153 var.yres = virt_h * virt_fh; 2154 x_diff = info->var.xres - var.xres; 2155 y_diff = info->var.yres - var.yres; 2156 if (x_diff < 0 || x_diff > virt_fw || 2157 y_diff < 0 || y_diff > virt_fh) { 2158 const struct fb_videomode *mode; 2159 2160 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); 2161 mode = fb_find_best_mode(&var, &info->modelist); 2162 if (mode == NULL) 2163 return -EINVAL; 2164 display_to_var(&var, p); 2165 fb_videomode_to_var(&var, mode); 2166 2167 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) 2168 return -EINVAL; 2169 2170 DPRINTK("resize now %ix%i\n", var.xres, var.yres); 2171 if (con_is_visible(vc)) { 2172 var.activate = FB_ACTIVATE_NOW | 2173 FB_ACTIVATE_FORCE; 2174 fb_set_var(info, &var); 2175 } 2176 var_to_display(p, &info->var, info); 2177 ops->var = info->var; 2178 } 2179 updatescrollmode(p, info, vc); 2180 return 0; 2181 } 2182 2183 static int fbcon_switch(struct vc_data *vc) 2184 { 2185 struct fb_info *info, *old_info = NULL; 2186 struct fbcon_ops *ops; 2187 struct display *p = &fb_display[vc->vc_num]; 2188 struct fb_var_screeninfo var; 2189 int i, ret, prev_console, charcnt = 256; 2190 2191 info = registered_fb[con2fb_map[vc->vc_num]]; 2192 ops = info->fbcon_par; 2193 2194 if (softback_top) { 2195 if (softback_lines) 2196 fbcon_set_origin(vc); 2197 softback_top = softback_curr = softback_in = softback_buf; 2198 softback_lines = 0; 2199 fbcon_update_softback(vc); 2200 } 2201 2202 if (logo_shown >= 0) { 2203 struct vc_data *conp2 = vc_cons[logo_shown].d; 2204 2205 if (conp2->vc_top == logo_lines 2206 && conp2->vc_bottom == conp2->vc_rows) 2207 conp2->vc_top = 0; 2208 logo_shown = FBCON_LOGO_CANSHOW; 2209 } 2210 2211 prev_console = ops->currcon; 2212 if (prev_console != -1) 2213 old_info = registered_fb[con2fb_map[prev_console]]; 2214 /* 2215 * FIXME: If we have multiple fbdev's loaded, we need to 2216 * update all info->currcon. Perhaps, we can place this 2217 * in a centralized structure, but this might break some 2218 * drivers. 2219 * 2220 * info->currcon = vc->vc_num; 2221 */ 2222 for (i = 0; i < FB_MAX; i++) { 2223 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) { 2224 struct fbcon_ops *o = registered_fb[i]->fbcon_par; 2225 2226 o->currcon = vc->vc_num; 2227 } 2228 } 2229 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 2230 display_to_var(&var, p); 2231 var.activate = FB_ACTIVATE_NOW; 2232 2233 /* 2234 * make sure we don't unnecessarily trip the memcmp() 2235 * in fb_set_var() 2236 */ 2237 info->var.activate = var.activate; 2238 var.vmode |= info->var.vmode & ~FB_VMODE_MASK; 2239 fb_set_var(info, &var); 2240 ops->var = info->var; 2241 2242 if (old_info != NULL && (old_info != info || 2243 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { 2244 if (info->fbops->fb_set_par) { 2245 ret = info->fbops->fb_set_par(info); 2246 2247 if (ret) 2248 printk(KERN_ERR "fbcon_switch: detected " 2249 "unhandled fb_set_par error, " 2250 "error code %d\n", ret); 2251 } 2252 2253 if (old_info != info) 2254 fbcon_del_cursor_timer(old_info); 2255 } 2256 2257 if (fbcon_is_inactive(vc, info) || 2258 ops->blank_state != FB_BLANK_UNBLANK) 2259 fbcon_del_cursor_timer(info); 2260 else 2261 fbcon_add_cursor_timer(info); 2262 2263 set_blitting_type(vc, info); 2264 ops->cursor_reset = 1; 2265 2266 if (ops->rotate_font && ops->rotate_font(info, vc)) { 2267 ops->rotate = FB_ROTATE_UR; 2268 set_blitting_type(vc, info); 2269 } 2270 2271 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); 2272 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; 2273 2274 if (p->userfont) 2275 charcnt = FNTCHARCNT(vc->vc_font.data); 2276 2277 if (charcnt > 256) 2278 vc->vc_complement_mask <<= 1; 2279 2280 updatescrollmode(p, info, vc); 2281 2282 switch (p->scrollmode) { 2283 case SCROLL_WRAP_MOVE: 2284 scrollback_phys_max = p->vrows - vc->vc_rows; 2285 break; 2286 case SCROLL_PAN_MOVE: 2287 case SCROLL_PAN_REDRAW: 2288 scrollback_phys_max = p->vrows - 2 * vc->vc_rows; 2289 if (scrollback_phys_max < 0) 2290 scrollback_phys_max = 0; 2291 break; 2292 default: 2293 scrollback_phys_max = 0; 2294 break; 2295 } 2296 2297 scrollback_max = 0; 2298 scrollback_current = 0; 2299 2300 if (!fbcon_is_inactive(vc, info)) { 2301 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2302 ops->update_start(info); 2303 } 2304 2305 fbcon_set_palette(vc, color_table); 2306 fbcon_clear_margins(vc, 0); 2307 2308 if (logo_shown == FBCON_LOGO_DRAW) { 2309 2310 logo_shown = fg_console; 2311 /* This is protected above by initmem_freed */ 2312 fb_show_logo(info, ops->rotate); 2313 update_region(vc, 2314 vc->vc_origin + vc->vc_size_row * vc->vc_top, 2315 vc->vc_size_row * (vc->vc_bottom - 2316 vc->vc_top) / 2); 2317 return 0; 2318 } 2319 return 1; 2320 } 2321 2322 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, 2323 int blank) 2324 { 2325 struct fb_event event; 2326 2327 if (blank) { 2328 unsigned short charmask = vc->vc_hi_font_mask ? 2329 0x1ff : 0xff; 2330 unsigned short oldc; 2331 2332 oldc = vc->vc_video_erase_char; 2333 vc->vc_video_erase_char &= charmask; 2334 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); 2335 vc->vc_video_erase_char = oldc; 2336 } 2337 2338 2339 if (!lock_fb_info(info)) 2340 return; 2341 event.info = info; 2342 event.data = ␣ 2343 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event); 2344 unlock_fb_info(info); 2345 } 2346 2347 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) 2348 { 2349 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2350 struct fbcon_ops *ops = info->fbcon_par; 2351 2352 if (mode_switch) { 2353 struct fb_var_screeninfo var = info->var; 2354 2355 ops->graphics = 1; 2356 2357 if (!blank) { 2358 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; 2359 fb_set_var(info, &var); 2360 ops->graphics = 0; 2361 ops->var = info->var; 2362 } 2363 } 2364 2365 if (!fbcon_is_inactive(vc, info)) { 2366 if (ops->blank_state != blank) { 2367 ops->blank_state = blank; 2368 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); 2369 ops->cursor_flash = (!blank); 2370 2371 if (!(info->flags & FBINFO_MISC_USEREVENT)) 2372 if (fb_blank(info, blank)) 2373 fbcon_generic_blank(vc, info, blank); 2374 } 2375 2376 if (!blank) 2377 update_screen(vc); 2378 } 2379 2380 if (mode_switch || fbcon_is_inactive(vc, info) || 2381 ops->blank_state != FB_BLANK_UNBLANK) 2382 fbcon_del_cursor_timer(info); 2383 else 2384 fbcon_add_cursor_timer(info); 2385 2386 return 0; 2387 } 2388 2389 static int fbcon_debug_enter(struct vc_data *vc) 2390 { 2391 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2392 struct fbcon_ops *ops = info->fbcon_par; 2393 2394 ops->save_graphics = ops->graphics; 2395 ops->graphics = 0; 2396 if (info->fbops->fb_debug_enter) 2397 info->fbops->fb_debug_enter(info); 2398 fbcon_set_palette(vc, color_table); 2399 return 0; 2400 } 2401 2402 static int fbcon_debug_leave(struct vc_data *vc) 2403 { 2404 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2405 struct fbcon_ops *ops = info->fbcon_par; 2406 2407 ops->graphics = ops->save_graphics; 2408 if (info->fbops->fb_debug_leave) 2409 info->fbops->fb_debug_leave(info); 2410 return 0; 2411 } 2412 2413 static int fbcon_get_font(struct vc_data *vc, struct console_font *font) 2414 { 2415 u8 *fontdata = vc->vc_font.data; 2416 u8 *data = font->data; 2417 int i, j; 2418 2419 font->width = vc->vc_font.width; 2420 font->height = vc->vc_font.height; 2421 font->charcount = vc->vc_hi_font_mask ? 512 : 256; 2422 if (!font->data) 2423 return 0; 2424 2425 if (font->width <= 8) { 2426 j = vc->vc_font.height; 2427 for (i = 0; i < font->charcount; i++) { 2428 memcpy(data, fontdata, j); 2429 memset(data + j, 0, 32 - j); 2430 data += 32; 2431 fontdata += j; 2432 } 2433 } else if (font->width <= 16) { 2434 j = vc->vc_font.height * 2; 2435 for (i = 0; i < font->charcount; i++) { 2436 memcpy(data, fontdata, j); 2437 memset(data + j, 0, 64 - j); 2438 data += 64; 2439 fontdata += j; 2440 } 2441 } else if (font->width <= 24) { 2442 for (i = 0; i < font->charcount; i++) { 2443 for (j = 0; j < vc->vc_font.height; j++) { 2444 *data++ = fontdata[0]; 2445 *data++ = fontdata[1]; 2446 *data++ = fontdata[2]; 2447 fontdata += sizeof(u32); 2448 } 2449 memset(data, 0, 3 * (32 - j)); 2450 data += 3 * (32 - j); 2451 } 2452 } else { 2453 j = vc->vc_font.height * 4; 2454 for (i = 0; i < font->charcount; i++) { 2455 memcpy(data, fontdata, j); 2456 memset(data + j, 0, 128 - j); 2457 data += 128; 2458 fontdata += j; 2459 } 2460 } 2461 return 0; 2462 } 2463 2464 /* set/clear vc_hi_font_mask and update vc attrs accordingly */ 2465 static void set_vc_hi_font(struct vc_data *vc, bool set) 2466 { 2467 if (!set) { 2468 vc->vc_hi_font_mask = 0; 2469 if (vc->vc_can_do_color) { 2470 vc->vc_complement_mask >>= 1; 2471 vc->vc_s_complement_mask >>= 1; 2472 } 2473 2474 /* ++Edmund: reorder the attribute bits */ 2475 if (vc->vc_can_do_color) { 2476 unsigned short *cp = 2477 (unsigned short *) vc->vc_origin; 2478 int count = vc->vc_screenbuf_size / 2; 2479 unsigned short c; 2480 for (; count > 0; count--, cp++) { 2481 c = scr_readw(cp); 2482 scr_writew(((c & 0xfe00) >> 1) | 2483 (c & 0xff), cp); 2484 } 2485 c = vc->vc_video_erase_char; 2486 vc->vc_video_erase_char = 2487 ((c & 0xfe00) >> 1) | (c & 0xff); 2488 vc->vc_attr >>= 1; 2489 } 2490 } else { 2491 vc->vc_hi_font_mask = 0x100; 2492 if (vc->vc_can_do_color) { 2493 vc->vc_complement_mask <<= 1; 2494 vc->vc_s_complement_mask <<= 1; 2495 } 2496 2497 /* ++Edmund: reorder the attribute bits */ 2498 { 2499 unsigned short *cp = 2500 (unsigned short *) vc->vc_origin; 2501 int count = vc->vc_screenbuf_size / 2; 2502 unsigned short c; 2503 for (; count > 0; count--, cp++) { 2504 unsigned short newc; 2505 c = scr_readw(cp); 2506 if (vc->vc_can_do_color) 2507 newc = 2508 ((c & 0xff00) << 1) | (c & 2509 0xff); 2510 else 2511 newc = c & ~0x100; 2512 scr_writew(newc, cp); 2513 } 2514 c = vc->vc_video_erase_char; 2515 if (vc->vc_can_do_color) { 2516 vc->vc_video_erase_char = 2517 ((c & 0xff00) << 1) | (c & 0xff); 2518 vc->vc_attr <<= 1; 2519 } else 2520 vc->vc_video_erase_char = c & ~0x100; 2521 } 2522 } 2523 } 2524 2525 static int fbcon_do_set_font(struct vc_data *vc, int w, int h, 2526 const u8 * data, int userfont) 2527 { 2528 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2529 struct fbcon_ops *ops = info->fbcon_par; 2530 struct display *p = &fb_display[vc->vc_num]; 2531 int resize; 2532 int cnt; 2533 char *old_data = NULL; 2534 2535 if (con_is_visible(vc) && softback_lines) 2536 fbcon_set_origin(vc); 2537 2538 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); 2539 if (p->userfont) 2540 old_data = vc->vc_font.data; 2541 if (userfont) 2542 cnt = FNTCHARCNT(data); 2543 else 2544 cnt = 256; 2545 vc->vc_font.data = (void *)(p->fontdata = data); 2546 if ((p->userfont = userfont)) 2547 REFCOUNT(data)++; 2548 vc->vc_font.width = w; 2549 vc->vc_font.height = h; 2550 if (vc->vc_hi_font_mask && cnt == 256) 2551 set_vc_hi_font(vc, false); 2552 else if (!vc->vc_hi_font_mask && cnt == 512) 2553 set_vc_hi_font(vc, true); 2554 2555 if (resize) { 2556 int cols, rows; 2557 2558 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2559 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2560 cols /= w; 2561 rows /= h; 2562 vc_resize(vc, cols, rows); 2563 if (con_is_visible(vc) && softback_buf) 2564 fbcon_update_softback(vc); 2565 } else if (con_is_visible(vc) 2566 && vc->vc_mode == KD_TEXT) { 2567 fbcon_clear_margins(vc, 0); 2568 update_screen(vc); 2569 } 2570 2571 if (old_data && (--REFCOUNT(old_data) == 0)) 2572 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); 2573 return 0; 2574 } 2575 2576 static int fbcon_copy_font(struct vc_data *vc, int con) 2577 { 2578 struct display *od = &fb_display[con]; 2579 struct console_font *f = &vc->vc_font; 2580 2581 if (od->fontdata == f->data) 2582 return 0; /* already the same font... */ 2583 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); 2584 } 2585 2586 /* 2587 * User asked to set font; we are guaranteed that 2588 * a) width and height are in range 1..32 2589 * b) charcount does not exceed 512 2590 * but lets not assume that, since someone might someday want to use larger 2591 * fonts. And charcount of 512 is small for unicode support. 2592 * 2593 * However, user space gives the font in 32 rows , regardless of 2594 * actual font height. So a new API is needed if support for larger fonts 2595 * is ever implemented. 2596 */ 2597 2598 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags) 2599 { 2600 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2601 unsigned charcount = font->charcount; 2602 int w = font->width; 2603 int h = font->height; 2604 int size; 2605 int i, csum; 2606 u8 *new_data, *data = font->data; 2607 int pitch = (font->width+7) >> 3; 2608 2609 /* Is there a reason why fbconsole couldn't handle any charcount >256? 2610 * If not this check should be changed to charcount < 256 */ 2611 if (charcount != 256 && charcount != 512) 2612 return -EINVAL; 2613 2614 /* Make sure drawing engine can handle the font */ 2615 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || 2616 !(info->pixmap.blit_y & (1 << (font->height - 1)))) 2617 return -EINVAL; 2618 2619 /* Make sure driver can handle the font length */ 2620 if (fbcon_invalid_charcount(info, charcount)) 2621 return -EINVAL; 2622 2623 size = h * pitch * charcount; 2624 2625 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); 2626 2627 if (!new_data) 2628 return -ENOMEM; 2629 2630 new_data += FONT_EXTRA_WORDS * sizeof(int); 2631 FNTSIZE(new_data) = size; 2632 FNTCHARCNT(new_data) = charcount; 2633 REFCOUNT(new_data) = 0; /* usage counter */ 2634 for (i=0; i< charcount; i++) { 2635 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); 2636 } 2637 2638 /* Since linux has a nice crc32 function use it for counting font 2639 * checksums. */ 2640 csum = crc32(0, new_data, size); 2641 2642 FNTSUM(new_data) = csum; 2643 /* Check if the same font is on some other console already */ 2644 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2645 struct vc_data *tmp = vc_cons[i].d; 2646 2647 if (fb_display[i].userfont && 2648 fb_display[i].fontdata && 2649 FNTSUM(fb_display[i].fontdata) == csum && 2650 FNTSIZE(fb_display[i].fontdata) == size && 2651 tmp->vc_font.width == w && 2652 !memcmp(fb_display[i].fontdata, new_data, size)) { 2653 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 2654 new_data = (u8 *)fb_display[i].fontdata; 2655 break; 2656 } 2657 } 2658 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); 2659 } 2660 2661 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) 2662 { 2663 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2664 const struct font_desc *f; 2665 2666 if (!name) 2667 f = get_default_font(info->var.xres, info->var.yres, 2668 info->pixmap.blit_x, info->pixmap.blit_y); 2669 else if (!(f = find_font(name))) 2670 return -ENOENT; 2671 2672 font->width = f->width; 2673 font->height = f->height; 2674 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); 2675 } 2676 2677 static u16 palette_red[16]; 2678 static u16 palette_green[16]; 2679 static u16 palette_blue[16]; 2680 2681 static struct fb_cmap palette_cmap = { 2682 0, 16, palette_red, palette_green, palette_blue, NULL 2683 }; 2684 2685 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) 2686 { 2687 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; 2688 int i, j, k, depth; 2689 u8 val; 2690 2691 if (fbcon_is_inactive(vc, info)) 2692 return; 2693 2694 if (!con_is_visible(vc)) 2695 return; 2696 2697 depth = fb_get_color_depth(&info->var, &info->fix); 2698 if (depth > 3) { 2699 for (i = j = 0; i < 16; i++) { 2700 k = table[i]; 2701 val = vc->vc_palette[j++]; 2702 palette_red[k] = (val << 8) | val; 2703 val = vc->vc_palette[j++]; 2704 palette_green[k] = (val << 8) | val; 2705 val = vc->vc_palette[j++]; 2706 palette_blue[k] = (val << 8) | val; 2707 } 2708 palette_cmap.len = 16; 2709 palette_cmap.start = 0; 2710 /* 2711 * If framebuffer is capable of less than 16 colors, 2712 * use default palette of fbcon. 2713 */ 2714 } else 2715 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); 2716 2717 fb_set_cmap(&palette_cmap, info); 2718 } 2719 2720 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) 2721 { 2722 unsigned long p; 2723 int line; 2724 2725 if (vc->vc_num != fg_console || !softback_lines) 2726 return (u16 *) (vc->vc_origin + offset); 2727 line = offset / vc->vc_size_row; 2728 if (line >= softback_lines) 2729 return (u16 *) (vc->vc_origin + offset - 2730 softback_lines * vc->vc_size_row); 2731 p = softback_curr + offset; 2732 if (p >= softback_end) 2733 p += softback_buf - softback_end; 2734 return (u16 *) p; 2735 } 2736 2737 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, 2738 int *px, int *py) 2739 { 2740 unsigned long ret; 2741 int x, y; 2742 2743 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { 2744 unsigned long offset = (pos - vc->vc_origin) / 2; 2745 2746 x = offset % vc->vc_cols; 2747 y = offset / vc->vc_cols; 2748 if (vc->vc_num == fg_console) 2749 y += softback_lines; 2750 ret = pos + (vc->vc_cols - x) * 2; 2751 } else if (vc->vc_num == fg_console && softback_lines) { 2752 unsigned long offset = pos - softback_curr; 2753 2754 if (pos < softback_curr) 2755 offset += softback_end - softback_buf; 2756 offset /= 2; 2757 x = offset % vc->vc_cols; 2758 y = offset / vc->vc_cols; 2759 ret = pos + (vc->vc_cols - x) * 2; 2760 if (ret == softback_end) 2761 ret = softback_buf; 2762 if (ret == softback_in) 2763 ret = vc->vc_origin; 2764 } else { 2765 /* Should not happen */ 2766 x = y = 0; 2767 ret = vc->vc_origin; 2768 } 2769 if (px) 2770 *px = x; 2771 if (py) 2772 *py = y; 2773 return ret; 2774 } 2775 2776 /* As we might be inside of softback, we may work with non-contiguous buffer, 2777 that's why we have to use a separate routine. */ 2778 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) 2779 { 2780 while (cnt--) { 2781 u16 a = scr_readw(p); 2782 if (!vc->vc_can_do_color) 2783 a ^= 0x0800; 2784 else if (vc->vc_hi_font_mask == 0x100) 2785 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | 2786 (((a) & 0x0e00) << 4); 2787 else 2788 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 2789 (((a) & 0x0700) << 4); 2790 scr_writew(a, p++); 2791 if (p == (u16 *) softback_end) 2792 p = (u16 *) softback_buf; 2793 if (p == (u16 *) softback_in) 2794 p = (u16 *) vc->vc_origin; 2795 } 2796 } 2797 2798 static void fbcon_scrolldelta(struct vc_data *vc, int lines) 2799 { 2800 struct fb_info *info = registered_fb[con2fb_map[fg_console]]; 2801 struct fbcon_ops *ops = info->fbcon_par; 2802 struct display *disp = &fb_display[fg_console]; 2803 int offset, limit, scrollback_old; 2804 2805 if (softback_top) { 2806 if (vc->vc_num != fg_console) 2807 return; 2808 if (vc->vc_mode != KD_TEXT || !lines) 2809 return; 2810 if (logo_shown >= 0) { 2811 struct vc_data *conp2 = vc_cons[logo_shown].d; 2812 2813 if (conp2->vc_top == logo_lines 2814 && conp2->vc_bottom == conp2->vc_rows) 2815 conp2->vc_top = 0; 2816 if (logo_shown == vc->vc_num) { 2817 unsigned long p, q; 2818 int i; 2819 2820 p = softback_in; 2821 q = vc->vc_origin + 2822 logo_lines * vc->vc_size_row; 2823 for (i = 0; i < logo_lines; i++) { 2824 if (p == softback_top) 2825 break; 2826 if (p == softback_buf) 2827 p = softback_end; 2828 p -= vc->vc_size_row; 2829 q -= vc->vc_size_row; 2830 scr_memcpyw((u16 *) q, (u16 *) p, 2831 vc->vc_size_row); 2832 } 2833 softback_in = softback_curr = p; 2834 update_region(vc, vc->vc_origin, 2835 logo_lines * vc->vc_cols); 2836 } 2837 logo_shown = FBCON_LOGO_CANSHOW; 2838 } 2839 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); 2840 fbcon_redraw_softback(vc, disp, lines); 2841 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); 2842 return; 2843 } 2844 2845 if (!scrollback_phys_max) 2846 return; 2847 2848 scrollback_old = scrollback_current; 2849 scrollback_current -= lines; 2850 if (scrollback_current < 0) 2851 scrollback_current = 0; 2852 else if (scrollback_current > scrollback_max) 2853 scrollback_current = scrollback_max; 2854 if (scrollback_current == scrollback_old) 2855 return; 2856 2857 if (fbcon_is_inactive(vc, info)) 2858 return; 2859 2860 fbcon_cursor(vc, CM_ERASE); 2861 2862 offset = disp->yscroll - scrollback_current; 2863 limit = disp->vrows; 2864 switch (disp->scrollmode) { 2865 case SCROLL_WRAP_MOVE: 2866 info->var.vmode |= FB_VMODE_YWRAP; 2867 break; 2868 case SCROLL_PAN_MOVE: 2869 case SCROLL_PAN_REDRAW: 2870 limit -= vc->vc_rows; 2871 info->var.vmode &= ~FB_VMODE_YWRAP; 2872 break; 2873 } 2874 if (offset < 0) 2875 offset += limit; 2876 else if (offset >= limit) 2877 offset -= limit; 2878 2879 ops->var.xoffset = 0; 2880 ops->var.yoffset = offset * vc->vc_font.height; 2881 ops->update_start(info); 2882 2883 if (!scrollback_current) 2884 fbcon_cursor(vc, CM_DRAW); 2885 } 2886 2887 static int fbcon_set_origin(struct vc_data *vc) 2888 { 2889 if (softback_lines) 2890 fbcon_scrolldelta(vc, softback_lines); 2891 return 0; 2892 } 2893 2894 static void fbcon_suspended(struct fb_info *info) 2895 { 2896 struct vc_data *vc = NULL; 2897 struct fbcon_ops *ops = info->fbcon_par; 2898 2899 if (!ops || ops->currcon < 0) 2900 return; 2901 vc = vc_cons[ops->currcon].d; 2902 2903 /* Clear cursor, restore saved data */ 2904 fbcon_cursor(vc, CM_ERASE); 2905 } 2906 2907 static void fbcon_resumed(struct fb_info *info) 2908 { 2909 struct vc_data *vc; 2910 struct fbcon_ops *ops = info->fbcon_par; 2911 2912 if (!ops || ops->currcon < 0) 2913 return; 2914 vc = vc_cons[ops->currcon].d; 2915 2916 update_screen(vc); 2917 } 2918 2919 static void fbcon_modechanged(struct fb_info *info) 2920 { 2921 struct fbcon_ops *ops = info->fbcon_par; 2922 struct vc_data *vc; 2923 struct display *p; 2924 int rows, cols; 2925 2926 if (!ops || ops->currcon < 0) 2927 return; 2928 vc = vc_cons[ops->currcon].d; 2929 if (vc->vc_mode != KD_TEXT || 2930 registered_fb[con2fb_map[ops->currcon]] != info) 2931 return; 2932 2933 p = &fb_display[vc->vc_num]; 2934 set_blitting_type(vc, info); 2935 2936 if (con_is_visible(vc)) { 2937 var_to_display(p, &info->var, info); 2938 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2939 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2940 cols /= vc->vc_font.width; 2941 rows /= vc->vc_font.height; 2942 vc_resize(vc, cols, rows); 2943 updatescrollmode(p, info, vc); 2944 scrollback_max = 0; 2945 scrollback_current = 0; 2946 2947 if (!fbcon_is_inactive(vc, info)) { 2948 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; 2949 ops->update_start(info); 2950 } 2951 2952 fbcon_set_palette(vc, color_table); 2953 update_screen(vc); 2954 if (softback_buf) 2955 fbcon_update_softback(vc); 2956 } 2957 } 2958 2959 static void fbcon_set_all_vcs(struct fb_info *info) 2960 { 2961 struct fbcon_ops *ops = info->fbcon_par; 2962 struct vc_data *vc; 2963 struct display *p; 2964 int i, rows, cols, fg = -1; 2965 2966 if (!ops || ops->currcon < 0) 2967 return; 2968 2969 for (i = first_fb_vc; i <= last_fb_vc; i++) { 2970 vc = vc_cons[i].d; 2971 if (!vc || vc->vc_mode != KD_TEXT || 2972 registered_fb[con2fb_map[i]] != info) 2973 continue; 2974 2975 if (con_is_visible(vc)) { 2976 fg = i; 2977 continue; 2978 } 2979 2980 p = &fb_display[vc->vc_num]; 2981 set_blitting_type(vc, info); 2982 var_to_display(p, &info->var, info); 2983 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); 2984 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); 2985 cols /= vc->vc_font.width; 2986 rows /= vc->vc_font.height; 2987 vc_resize(vc, cols, rows); 2988 } 2989 2990 if (fg != -1) 2991 fbcon_modechanged(info); 2992 } 2993 2994 static int fbcon_mode_deleted(struct fb_info *info, 2995 struct fb_videomode *mode) 2996 { 2997 struct fb_info *fb_info; 2998 struct display *p; 2999 int i, j, found = 0; 3000 3001 /* before deletion, ensure that mode is not in use */ 3002 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3003 j = con2fb_map[i]; 3004 if (j == -1) 3005 continue; 3006 fb_info = registered_fb[j]; 3007 if (fb_info != info) 3008 continue; 3009 p = &fb_display[i]; 3010 if (!p || !p->mode) 3011 continue; 3012 if (fb_mode_is_equal(p->mode, mode)) { 3013 found = 1; 3014 break; 3015 } 3016 } 3017 return found; 3018 } 3019 3020 #ifdef CONFIG_VT_HW_CONSOLE_BINDING 3021 static int fbcon_unbind(void) 3022 { 3023 int ret; 3024 3025 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, 3026 fbcon_is_default); 3027 3028 if (!ret) 3029 fbcon_has_console_bind = 0; 3030 3031 return ret; 3032 } 3033 #else 3034 static inline int fbcon_unbind(void) 3035 { 3036 return -EINVAL; 3037 } 3038 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ 3039 3040 /* called with console_lock held */ 3041 static int fbcon_fb_unbind(int idx) 3042 { 3043 int i, new_idx = -1, ret = 0; 3044 3045 if (!fbcon_has_console_bind) 3046 return 0; 3047 3048 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3049 if (con2fb_map[i] != idx && 3050 con2fb_map[i] != -1) { 3051 new_idx = i; 3052 break; 3053 } 3054 } 3055 3056 if (new_idx != -1) { 3057 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3058 if (con2fb_map[i] == idx) 3059 set_con2fb_map(i, new_idx, 0); 3060 } 3061 } else { 3062 struct fb_info *info = registered_fb[idx]; 3063 3064 /* This is sort of like set_con2fb_map, except it maps 3065 * the consoles to no device and then releases the 3066 * oldinfo to free memory and cancel the cursor blink 3067 * timer. I can imagine this just becoming part of 3068 * set_con2fb_map where new_idx is -1 3069 */ 3070 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3071 if (con2fb_map[i] == idx) { 3072 con2fb_map[i] = -1; 3073 if (!search_fb_in_map(idx)) { 3074 ret = con2fb_release_oldinfo(vc_cons[i].d, 3075 info, NULL, i, 3076 idx, 0); 3077 if (ret) { 3078 con2fb_map[i] = idx; 3079 return ret; 3080 } 3081 } 3082 } 3083 } 3084 ret = fbcon_unbind(); 3085 } 3086 3087 return ret; 3088 } 3089 3090 /* called with console_lock held */ 3091 static int fbcon_fb_unregistered(struct fb_info *info) 3092 { 3093 int i, idx; 3094 3095 idx = info->node; 3096 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3097 if (con2fb_map[i] == idx) 3098 con2fb_map[i] = -1; 3099 } 3100 3101 if (idx == info_idx) { 3102 info_idx = -1; 3103 3104 for (i = 0; i < FB_MAX; i++) { 3105 if (registered_fb[i] != NULL) { 3106 info_idx = i; 3107 break; 3108 } 3109 } 3110 } 3111 3112 if (info_idx != -1) { 3113 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3114 if (con2fb_map[i] == -1) 3115 con2fb_map[i] = info_idx; 3116 } 3117 } 3118 3119 if (primary_device == idx) 3120 primary_device = -1; 3121 3122 if (!num_registered_fb) 3123 do_unregister_con_driver(&fb_con); 3124 3125 return 0; 3126 } 3127 3128 /* called with console_lock held */ 3129 static void fbcon_remap_all(int idx) 3130 { 3131 int i; 3132 for (i = first_fb_vc; i <= last_fb_vc; i++) 3133 set_con2fb_map(i, idx, 0); 3134 3135 if (con_is_bound(&fb_con)) { 3136 printk(KERN_INFO "fbcon: Remapping primary device, " 3137 "fb%i, to tty %i-%i\n", idx, 3138 first_fb_vc + 1, last_fb_vc + 1); 3139 info_idx = idx; 3140 } 3141 } 3142 3143 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 3144 static void fbcon_select_primary(struct fb_info *info) 3145 { 3146 if (!map_override && primary_device == -1 && 3147 fb_is_primary_device(info)) { 3148 int i; 3149 3150 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", 3151 info->fix.id, info->node); 3152 primary_device = info->node; 3153 3154 for (i = first_fb_vc; i <= last_fb_vc; i++) 3155 con2fb_map_boot[i] = primary_device; 3156 3157 if (con_is_bound(&fb_con)) { 3158 printk(KERN_INFO "fbcon: Remapping primary device, " 3159 "fb%i, to tty %i-%i\n", info->node, 3160 first_fb_vc + 1, last_fb_vc + 1); 3161 info_idx = primary_device; 3162 } 3163 } 3164 3165 } 3166 #else 3167 static inline void fbcon_select_primary(struct fb_info *info) 3168 { 3169 return; 3170 } 3171 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ 3172 3173 /* called with console_lock held */ 3174 static int fbcon_fb_registered(struct fb_info *info) 3175 { 3176 int ret = 0, i, idx; 3177 3178 idx = info->node; 3179 fbcon_select_primary(info); 3180 3181 if (info_idx == -1) { 3182 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3183 if (con2fb_map_boot[i] == idx) { 3184 info_idx = idx; 3185 break; 3186 } 3187 } 3188 3189 if (info_idx != -1) 3190 ret = do_fbcon_takeover(1); 3191 } else { 3192 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3193 if (con2fb_map_boot[i] == idx) 3194 set_con2fb_map(i, idx, 0); 3195 } 3196 } 3197 3198 return ret; 3199 } 3200 3201 static void fbcon_fb_blanked(struct fb_info *info, int blank) 3202 { 3203 struct fbcon_ops *ops = info->fbcon_par; 3204 struct vc_data *vc; 3205 3206 if (!ops || ops->currcon < 0) 3207 return; 3208 3209 vc = vc_cons[ops->currcon].d; 3210 if (vc->vc_mode != KD_TEXT || 3211 registered_fb[con2fb_map[ops->currcon]] != info) 3212 return; 3213 3214 if (con_is_visible(vc)) { 3215 if (blank) 3216 do_blank_screen(0); 3217 else 3218 do_unblank_screen(0); 3219 } 3220 ops->blank_state = blank; 3221 } 3222 3223 static void fbcon_new_modelist(struct fb_info *info) 3224 { 3225 int i; 3226 struct vc_data *vc; 3227 struct fb_var_screeninfo var; 3228 const struct fb_videomode *mode; 3229 3230 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3231 if (registered_fb[con2fb_map[i]] != info) 3232 continue; 3233 if (!fb_display[i].mode) 3234 continue; 3235 vc = vc_cons[i].d; 3236 display_to_var(&var, &fb_display[i]); 3237 mode = fb_find_nearest_mode(fb_display[i].mode, 3238 &info->modelist); 3239 fb_videomode_to_var(&var, mode); 3240 fbcon_set_disp(info, &var, vc->vc_num); 3241 } 3242 } 3243 3244 static void fbcon_get_requirement(struct fb_info *info, 3245 struct fb_blit_caps *caps) 3246 { 3247 struct vc_data *vc; 3248 struct display *p; 3249 3250 if (caps->flags) { 3251 int i, charcnt; 3252 3253 for (i = first_fb_vc; i <= last_fb_vc; i++) { 3254 vc = vc_cons[i].d; 3255 if (vc && vc->vc_mode == KD_TEXT && 3256 info->node == con2fb_map[i]) { 3257 p = &fb_display[i]; 3258 caps->x |= 1 << (vc->vc_font.width - 1); 3259 caps->y |= 1 << (vc->vc_font.height - 1); 3260 charcnt = (p->userfont) ? 3261 FNTCHARCNT(p->fontdata) : 256; 3262 if (caps->len < charcnt) 3263 caps->len = charcnt; 3264 } 3265 } 3266 } else { 3267 vc = vc_cons[fg_console].d; 3268 3269 if (vc && vc->vc_mode == KD_TEXT && 3270 info->node == con2fb_map[fg_console]) { 3271 p = &fb_display[fg_console]; 3272 caps->x = 1 << (vc->vc_font.width - 1); 3273 caps->y = 1 << (vc->vc_font.height - 1); 3274 caps->len = (p->userfont) ? 3275 FNTCHARCNT(p->fontdata) : 256; 3276 } 3277 } 3278 } 3279 3280 static int fbcon_event_notify(struct notifier_block *self, 3281 unsigned long action, void *data) 3282 { 3283 struct fb_event *event = data; 3284 struct fb_info *info = event->info; 3285 struct fb_videomode *mode; 3286 struct fb_con2fbmap *con2fb; 3287 struct fb_blit_caps *caps; 3288 int idx, ret = 0; 3289 3290 /* 3291 * ignore all events except driver registration and deregistration 3292 * if fbcon is not active 3293 */ 3294 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED || 3295 action == FB_EVENT_FB_UNREGISTERED)) 3296 goto done; 3297 3298 switch(action) { 3299 case FB_EVENT_SUSPEND: 3300 fbcon_suspended(info); 3301 break; 3302 case FB_EVENT_RESUME: 3303 fbcon_resumed(info); 3304 break; 3305 case FB_EVENT_MODE_CHANGE: 3306 fbcon_modechanged(info); 3307 break; 3308 case FB_EVENT_MODE_CHANGE_ALL: 3309 fbcon_set_all_vcs(info); 3310 break; 3311 case FB_EVENT_MODE_DELETE: 3312 mode = event->data; 3313 ret = fbcon_mode_deleted(info, mode); 3314 break; 3315 case FB_EVENT_FB_UNBIND: 3316 idx = info->node; 3317 ret = fbcon_fb_unbind(idx); 3318 break; 3319 case FB_EVENT_FB_REGISTERED: 3320 ret = fbcon_fb_registered(info); 3321 break; 3322 case FB_EVENT_FB_UNREGISTERED: 3323 ret = fbcon_fb_unregistered(info); 3324 break; 3325 case FB_EVENT_SET_CONSOLE_MAP: 3326 /* called with console lock held */ 3327 con2fb = event->data; 3328 ret = set_con2fb_map(con2fb->console - 1, 3329 con2fb->framebuffer, 1); 3330 break; 3331 case FB_EVENT_GET_CONSOLE_MAP: 3332 con2fb = event->data; 3333 con2fb->framebuffer = con2fb_map[con2fb->console - 1]; 3334 break; 3335 case FB_EVENT_BLANK: 3336 fbcon_fb_blanked(info, *(int *)event->data); 3337 break; 3338 case FB_EVENT_NEW_MODELIST: 3339 fbcon_new_modelist(info); 3340 break; 3341 case FB_EVENT_GET_REQ: 3342 caps = event->data; 3343 fbcon_get_requirement(info, caps); 3344 break; 3345 case FB_EVENT_REMAP_ALL_CONSOLE: 3346 idx = info->node; 3347 fbcon_remap_all(idx); 3348 break; 3349 } 3350 done: 3351 return ret; 3352 } 3353 3354 /* 3355 * The console `switch' structure for the frame buffer based console 3356 */ 3357 3358 static const struct consw fb_con = { 3359 .owner = THIS_MODULE, 3360 .con_startup = fbcon_startup, 3361 .con_init = fbcon_init, 3362 .con_deinit = fbcon_deinit, 3363 .con_clear = fbcon_clear, 3364 .con_putc = fbcon_putc, 3365 .con_putcs = fbcon_putcs, 3366 .con_cursor = fbcon_cursor, 3367 .con_scroll = fbcon_scroll, 3368 .con_switch = fbcon_switch, 3369 .con_blank = fbcon_blank, 3370 .con_font_set = fbcon_set_font, 3371 .con_font_get = fbcon_get_font, 3372 .con_font_default = fbcon_set_def_font, 3373 .con_font_copy = fbcon_copy_font, 3374 .con_set_palette = fbcon_set_palette, 3375 .con_scrolldelta = fbcon_scrolldelta, 3376 .con_set_origin = fbcon_set_origin, 3377 .con_invert_region = fbcon_invert_region, 3378 .con_screen_pos = fbcon_screen_pos, 3379 .con_getxy = fbcon_getxy, 3380 .con_resize = fbcon_resize, 3381 .con_debug_enter = fbcon_debug_enter, 3382 .con_debug_leave = fbcon_debug_leave, 3383 }; 3384 3385 static struct notifier_block fbcon_event_notifier = { 3386 .notifier_call = fbcon_event_notify, 3387 }; 3388 3389 static ssize_t store_rotate(struct device *device, 3390 struct device_attribute *attr, const char *buf, 3391 size_t count) 3392 { 3393 struct fb_info *info; 3394 int rotate, idx; 3395 char **last = NULL; 3396 3397 if (fbcon_has_exited) 3398 return count; 3399 3400 console_lock(); 3401 idx = con2fb_map[fg_console]; 3402 3403 if (idx == -1 || registered_fb[idx] == NULL) 3404 goto err; 3405 3406 info = registered_fb[idx]; 3407 rotate = simple_strtoul(buf, last, 0); 3408 fbcon_rotate(info, rotate); 3409 err: 3410 console_unlock(); 3411 return count; 3412 } 3413 3414 static ssize_t store_rotate_all(struct device *device, 3415 struct device_attribute *attr,const char *buf, 3416 size_t count) 3417 { 3418 struct fb_info *info; 3419 int rotate, idx; 3420 char **last = NULL; 3421 3422 if (fbcon_has_exited) 3423 return count; 3424 3425 console_lock(); 3426 idx = con2fb_map[fg_console]; 3427 3428 if (idx == -1 || registered_fb[idx] == NULL) 3429 goto err; 3430 3431 info = registered_fb[idx]; 3432 rotate = simple_strtoul(buf, last, 0); 3433 fbcon_rotate_all(info, rotate); 3434 err: 3435 console_unlock(); 3436 return count; 3437 } 3438 3439 static ssize_t show_rotate(struct device *device, 3440 struct device_attribute *attr,char *buf) 3441 { 3442 struct fb_info *info; 3443 int rotate = 0, idx; 3444 3445 if (fbcon_has_exited) 3446 return 0; 3447 3448 console_lock(); 3449 idx = con2fb_map[fg_console]; 3450 3451 if (idx == -1 || registered_fb[idx] == NULL) 3452 goto err; 3453 3454 info = registered_fb[idx]; 3455 rotate = fbcon_get_rotate(info); 3456 err: 3457 console_unlock(); 3458 return snprintf(buf, PAGE_SIZE, "%d\n", rotate); 3459 } 3460 3461 static ssize_t show_cursor_blink(struct device *device, 3462 struct device_attribute *attr, char *buf) 3463 { 3464 struct fb_info *info; 3465 struct fbcon_ops *ops; 3466 int idx, blink = -1; 3467 3468 if (fbcon_has_exited) 3469 return 0; 3470 3471 console_lock(); 3472 idx = con2fb_map[fg_console]; 3473 3474 if (idx == -1 || registered_fb[idx] == NULL) 3475 goto err; 3476 3477 info = registered_fb[idx]; 3478 ops = info->fbcon_par; 3479 3480 if (!ops) 3481 goto err; 3482 3483 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; 3484 err: 3485 console_unlock(); 3486 return snprintf(buf, PAGE_SIZE, "%d\n", blink); 3487 } 3488 3489 static ssize_t store_cursor_blink(struct device *device, 3490 struct device_attribute *attr, 3491 const char *buf, size_t count) 3492 { 3493 struct fb_info *info; 3494 int blink, idx; 3495 char **last = NULL; 3496 3497 if (fbcon_has_exited) 3498 return count; 3499 3500 console_lock(); 3501 idx = con2fb_map[fg_console]; 3502 3503 if (idx == -1 || registered_fb[idx] == NULL) 3504 goto err; 3505 3506 info = registered_fb[idx]; 3507 3508 if (!info->fbcon_par) 3509 goto err; 3510 3511 blink = simple_strtoul(buf, last, 0); 3512 3513 if (blink) { 3514 fbcon_cursor_noblink = 0; 3515 fbcon_add_cursor_timer(info); 3516 } else { 3517 fbcon_cursor_noblink = 1; 3518 fbcon_del_cursor_timer(info); 3519 } 3520 3521 err: 3522 console_unlock(); 3523 return count; 3524 } 3525 3526 static struct device_attribute device_attrs[] = { 3527 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), 3528 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), 3529 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, 3530 store_cursor_blink), 3531 }; 3532 3533 static int fbcon_init_device(void) 3534 { 3535 int i, error = 0; 3536 3537 fbcon_has_sysfs = 1; 3538 3539 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { 3540 error = device_create_file(fbcon_device, &device_attrs[i]); 3541 3542 if (error) 3543 break; 3544 } 3545 3546 if (error) { 3547 while (--i >= 0) 3548 device_remove_file(fbcon_device, &device_attrs[i]); 3549 3550 fbcon_has_sysfs = 0; 3551 } 3552 3553 return 0; 3554 } 3555 3556 static void fbcon_start(void) 3557 { 3558 if (num_registered_fb) { 3559 int i; 3560 3561 console_lock(); 3562 3563 for (i = 0; i < FB_MAX; i++) { 3564 if (registered_fb[i] != NULL) { 3565 info_idx = i; 3566 break; 3567 } 3568 } 3569 3570 do_fbcon_takeover(0); 3571 console_unlock(); 3572 3573 } 3574 } 3575 3576 static void fbcon_exit(void) 3577 { 3578 struct fb_info *info; 3579 int i, j, mapped; 3580 3581 if (fbcon_has_exited) 3582 return; 3583 3584 kfree((void *)softback_buf); 3585 softback_buf = 0UL; 3586 3587 for (i = 0; i < FB_MAX; i++) { 3588 int pending = 0; 3589 3590 mapped = 0; 3591 info = registered_fb[i]; 3592 3593 if (info == NULL) 3594 continue; 3595 3596 if (info->queue.func) 3597 pending = cancel_work_sync(&info->queue); 3598 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : 3599 "no")); 3600 3601 for (j = first_fb_vc; j <= last_fb_vc; j++) { 3602 if (con2fb_map[j] == i) { 3603 mapped = 1; 3604 break; 3605 } 3606 } 3607 3608 if (mapped) { 3609 if (info->fbops->fb_release) 3610 info->fbops->fb_release(info, 0); 3611 module_put(info->fbops->owner); 3612 3613 if (info->fbcon_par) { 3614 struct fbcon_ops *ops = info->fbcon_par; 3615 3616 fbcon_del_cursor_timer(info); 3617 kfree(ops->cursor_src); 3618 kfree(ops->cursor_state.mask); 3619 kfree(info->fbcon_par); 3620 info->fbcon_par = NULL; 3621 } 3622 3623 if (info->queue.func == fb_flashcursor) 3624 info->queue.func = NULL; 3625 } 3626 } 3627 3628 fbcon_has_exited = 1; 3629 } 3630 3631 void __init fb_console_init(void) 3632 { 3633 int i; 3634 3635 console_lock(); 3636 fb_register_client(&fbcon_event_notifier); 3637 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, 3638 "fbcon"); 3639 3640 if (IS_ERR(fbcon_device)) { 3641 printk(KERN_WARNING "Unable to create device " 3642 "for fbcon; errno = %ld\n", 3643 PTR_ERR(fbcon_device)); 3644 fbcon_device = NULL; 3645 } else 3646 fbcon_init_device(); 3647 3648 for (i = 0; i < MAX_NR_CONSOLES; i++) 3649 con2fb_map[i] = -1; 3650 3651 console_unlock(); 3652 fbcon_start(); 3653 } 3654 3655 #ifdef MODULE 3656 3657 static void __exit fbcon_deinit_device(void) 3658 { 3659 int i; 3660 3661 if (fbcon_has_sysfs) { 3662 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) 3663 device_remove_file(fbcon_device, &device_attrs[i]); 3664 3665 fbcon_has_sysfs = 0; 3666 } 3667 } 3668 3669 void __exit fb_console_exit(void) 3670 { 3671 console_lock(); 3672 fb_unregister_client(&fbcon_event_notifier); 3673 fbcon_deinit_device(); 3674 device_destroy(fb_class, MKDEV(0, 0)); 3675 fbcon_exit(); 3676 do_unregister_con_driver(&fb_con); 3677 console_unlock(); 3678 } 3679 #endif 3680