This source file includes following definitions.
- fbcon_map_override
- fbcon_map_override
- fbcon_set_rotation
- fbcon_rotate
- fbcon_rotate_all
- fbcon_set_rotation
- fbcon_rotate
- fbcon_rotate_all
- fbcon_get_rotate
- fbcon_is_inactive
- get_color
- fbcon_update_softback
- fb_flashcursor
- cursor_timer_handler
- fbcon_add_cursor_timer
- fbcon_del_cursor_timer
- fb_console_setup
- search_fb_in_map
- search_for_mapped_con
- do_fbcon_takeover
- fbcon_prepare_logo
- fbcon_prepare_logo
- set_blitting_type
- fbcon_invalid_charcount
- set_blitting_type
- fbcon_invalid_charcount
- con2fb_acquire_newinfo
- con2fb_release_oldinfo
- con2fb_init_display
- set_con2fb_map
- var_to_display
- display_to_var
- fbcon_startup
- fbcon_init
- fbcon_free_font
- fbcon_deinit
- fbcon_clear
- fbcon_putcs
- fbcon_putc
- fbcon_clear_margins
- fbcon_cursor
- fbcon_set_disp
- ywrap_up
- ywrap_down
- ypan_up
- ypan_up_redraw
- ypan_down
- ypan_down_redraw
- fbcon_redraw_softback
- fbcon_redraw_move
- fbcon_redraw_blit
- fbcon_redraw
- fbcon_softback_note
- fbcon_scroll
- fbcon_bmove
- fbcon_bmove_rec
- updatescrollmode
- fbcon_resize
- fbcon_switch
- fbcon_generic_blank
- fbcon_blank
- fbcon_debug_enter
- fbcon_debug_leave
- fbcon_get_font
- set_vc_hi_font
- fbcon_do_set_font
- fbcon_copy_font
- fbcon_set_font
- fbcon_set_def_font
- fbcon_set_palette
- fbcon_screen_pos
- fbcon_getxy
- fbcon_invert_region
- fbcon_scrolldelta
- fbcon_set_origin
- fbcon_suspended
- fbcon_resumed
- fbcon_modechanged
- fbcon_set_all_vcs
- fbcon_update_vcs
- fbcon_mode_deleted
- fbcon_unbind
- fbcon_unbind
- fbcon_fb_unbind
- fbcon_fb_unregistered
- fbcon_remap_all
- fbcon_select_primary
- fbcon_select_primary
- fbcon_fb_registered
- fbcon_fb_blanked
- fbcon_new_modelist
- fbcon_get_requirement
- fbcon_set_con2fb_map_ioctl
- fbcon_get_con2fb_map_ioctl
- store_rotate
- store_rotate_all
- show_rotate
- show_cursor_blink
- store_cursor_blink
- fbcon_init_device
- fbcon_register_existing_fbs
- fbcon_output_notifier
- fbcon_start
- fbcon_exit
- fb_console_init
- fbcon_deinit_device
- fb_console_exit
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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>
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>
79 #include <linux/uaccess.h>
80 #include <asm/fb.h>
81 #include <asm/irq.h>
82
83 #include "fbcon.h"
84
85 #ifdef FBCONDEBUG
86 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
87 #else
88 # define DPRINTK(fmt, args...)
89 #endif
90
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109
110 enum {
111 FBCON_LOGO_CANSHOW = -1,
112 FBCON_LOGO_DRAW = -2,
113 FBCON_LOGO_DONTSHOW = -3
114 };
115
116 static struct fbcon_display fb_display[MAX_NR_CONSOLES];
117
118 static signed char con2fb_map[MAX_NR_CONSOLES];
119 static signed char con2fb_map_boot[MAX_NR_CONSOLES];
120
121 static int logo_lines;
122
123
124 static int logo_shown = FBCON_LOGO_CANSHOW;
125
126 static int fbcon_softback_size = 32768;
127 static unsigned long softback_buf, softback_curr;
128 static unsigned long softback_in;
129 static unsigned long softback_top, softback_end;
130 static int softback_lines;
131
132 static int first_fb_vc;
133 static int last_fb_vc = MAX_NR_CONSOLES - 1;
134 static int fbcon_is_default = 1;
135 static int primary_device = -1;
136 static int fbcon_has_console_bind;
137
138 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
139 static int map_override;
140
141 static inline void fbcon_map_override(void)
142 {
143 map_override = 1;
144 }
145 #else
146 static inline void fbcon_map_override(void)
147 {
148 }
149 #endif
150
151 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
152 static bool deferred_takeover = true;
153 #else
154 #define deferred_takeover false
155 #endif
156
157
158 static char fontname[40];
159
160
161 static int info_idx = -1;
162
163
164 static int initial_rotation = -1;
165 static int fbcon_has_sysfs;
166 static int margin_color;
167
168 static const struct consw fb_con;
169
170 #define CM_SOFTBACK (8)
171
172 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
173
174 static int fbcon_set_origin(struct vc_data *);
175
176 static int fbcon_cursor_noblink;
177
178 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
179
180
181
182
183
184 static const char *fbcon_startup(void);
185 static void fbcon_init(struct vc_data *vc, int init);
186 static void fbcon_deinit(struct vc_data *vc);
187 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
188 int width);
189 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
190 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
191 int count, int ypos, int xpos);
192 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
193 static void fbcon_cursor(struct vc_data *vc, int mode);
194 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
195 int height, int width);
196 static int fbcon_switch(struct vc_data *vc);
197 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
198 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table);
199
200
201
202
203 static __inline__ void ywrap_up(struct vc_data *vc, int count);
204 static __inline__ void ywrap_down(struct vc_data *vc, int count);
205 static __inline__ void ypan_up(struct vc_data *vc, int count);
206 static __inline__ void ypan_down(struct vc_data *vc, int count);
207 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx,
208 int dy, int dx, int height, int width, u_int y_break);
209 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
210 int unit);
211 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
212 int line, int count, int dy);
213 static void fbcon_modechanged(struct fb_info *info);
214 static void fbcon_set_all_vcs(struct fb_info *info);
215 static void fbcon_start(void);
216 static void fbcon_exit(void);
217 static struct device *fbcon_device;
218
219 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
220 static inline void fbcon_set_rotation(struct fb_info *info)
221 {
222 struct fbcon_ops *ops = info->fbcon_par;
223
224 if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
225 ops->p->con_rotate < 4)
226 ops->rotate = ops->p->con_rotate;
227 else
228 ops->rotate = 0;
229 }
230
231 static void fbcon_rotate(struct fb_info *info, u32 rotate)
232 {
233 struct fbcon_ops *ops= info->fbcon_par;
234 struct fb_info *fb_info;
235
236 if (!ops || ops->currcon == -1)
237 return;
238
239 fb_info = registered_fb[con2fb_map[ops->currcon]];
240
241 if (info == fb_info) {
242 struct fbcon_display *p = &fb_display[ops->currcon];
243
244 if (rotate < 4)
245 p->con_rotate = rotate;
246 else
247 p->con_rotate = 0;
248
249 fbcon_modechanged(info);
250 }
251 }
252
253 static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
254 {
255 struct fbcon_ops *ops = info->fbcon_par;
256 struct vc_data *vc;
257 struct fbcon_display *p;
258 int i;
259
260 if (!ops || ops->currcon < 0 || rotate > 3)
261 return;
262
263 for (i = first_fb_vc; i <= last_fb_vc; i++) {
264 vc = vc_cons[i].d;
265 if (!vc || vc->vc_mode != KD_TEXT ||
266 registered_fb[con2fb_map[i]] != info)
267 continue;
268
269 p = &fb_display[vc->vc_num];
270 p->con_rotate = rotate;
271 }
272
273 fbcon_set_all_vcs(info);
274 }
275 #else
276 static inline void fbcon_set_rotation(struct fb_info *info)
277 {
278 struct fbcon_ops *ops = info->fbcon_par;
279
280 ops->rotate = FB_ROTATE_UR;
281 }
282
283 static void fbcon_rotate(struct fb_info *info, u32 rotate)
284 {
285 return;
286 }
287
288 static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
289 {
290 return;
291 }
292 #endif
293
294 static int fbcon_get_rotate(struct fb_info *info)
295 {
296 struct fbcon_ops *ops = info->fbcon_par;
297
298 return (ops) ? ops->rotate : 0;
299 }
300
301 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
302 {
303 struct fbcon_ops *ops = info->fbcon_par;
304
305 return (info->state != FBINFO_STATE_RUNNING ||
306 vc->vc_mode != KD_TEXT || ops->graphics);
307 }
308
309 static int get_color(struct vc_data *vc, struct fb_info *info,
310 u16 c, int is_fg)
311 {
312 int depth = fb_get_color_depth(&info->var, &info->fix);
313 int color = 0;
314
315 if (console_blanked) {
316 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
317
318 c = vc->vc_video_erase_char & charmask;
319 }
320
321 if (depth != 1)
322 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
323 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
324
325 switch (depth) {
326 case 1:
327 {
328 int col = mono_col(info);
329
330 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
331 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
332
333 if (console_blanked)
334 fg = bg;
335
336 color = (is_fg) ? fg : bg;
337 break;
338 }
339 case 2:
340
341
342
343
344
345
346
347 switch (color) {
348 case 0:
349 color = 0;
350 break;
351 case 1 ... 6:
352 color = 2;
353 break;
354 case 7 ... 8:
355 color = 1;
356 break;
357 default:
358 color = 3;
359 break;
360 }
361 break;
362 case 3:
363
364
365
366
367
368 color &= 7;
369 break;
370 }
371
372
373 return color;
374 }
375
376 static void fbcon_update_softback(struct vc_data *vc)
377 {
378 int l = fbcon_softback_size / vc->vc_size_row;
379
380 if (l > 5)
381 softback_end = softback_buf + l * vc->vc_size_row;
382 else
383
384
385 softback_top = 0;
386 }
387
388 static void fb_flashcursor(struct work_struct *work)
389 {
390 struct fb_info *info = container_of(work, struct fb_info, queue);
391 struct fbcon_ops *ops = info->fbcon_par;
392 struct vc_data *vc = NULL;
393 int c;
394 int mode;
395 int ret;
396
397
398
399
400 ret = console_trylock();
401 if (ret == 0)
402 return;
403
404 if (ops && ops->currcon != -1)
405 vc = vc_cons[ops->currcon].d;
406
407 if (!vc || !con_is_visible(vc) ||
408 registered_fb[con2fb_map[vc->vc_num]] != info ||
409 vc->vc_deccm != 1) {
410 console_unlock();
411 return;
412 }
413
414 c = scr_readw((u16 *) vc->vc_pos);
415 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
416 CM_ERASE : CM_DRAW;
417 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
418 get_color(vc, info, c, 0));
419 console_unlock();
420 }
421
422 static void cursor_timer_handler(struct timer_list *t)
423 {
424 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer);
425 struct fb_info *info = ops->info;
426
427 queue_work(system_power_efficient_wq, &info->queue);
428 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
429 }
430
431 static void fbcon_add_cursor_timer(struct fb_info *info)
432 {
433 struct fbcon_ops *ops = info->fbcon_par;
434
435 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
436 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
437 !fbcon_cursor_noblink) {
438 if (!info->queue.func)
439 INIT_WORK(&info->queue, fb_flashcursor);
440
441 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0);
442 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
443 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
444 }
445 }
446
447 static void fbcon_del_cursor_timer(struct fb_info *info)
448 {
449 struct fbcon_ops *ops = info->fbcon_par;
450
451 if (info->queue.func == fb_flashcursor &&
452 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
453 del_timer_sync(&ops->cursor_timer);
454 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
455 }
456 }
457
458 #ifndef MODULE
459 static int __init fb_console_setup(char *this_opt)
460 {
461 char *options;
462 int i, j;
463
464 if (!this_opt || !*this_opt)
465 return 1;
466
467 while ((options = strsep(&this_opt, ",")) != NULL) {
468 if (!strncmp(options, "font:", 5)) {
469 strlcpy(fontname, options + 5, sizeof(fontname));
470 continue;
471 }
472
473 if (!strncmp(options, "scrollback:", 11)) {
474 options += 11;
475 if (*options) {
476 fbcon_softback_size = simple_strtoul(options, &options, 0);
477 if (*options == 'k' || *options == 'K') {
478 fbcon_softback_size *= 1024;
479 }
480 }
481 continue;
482 }
483
484 if (!strncmp(options, "map:", 4)) {
485 options += 4;
486 if (*options) {
487 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
488 if (!options[j])
489 j = 0;
490 con2fb_map_boot[i] =
491 (options[j++]-'0') % FB_MAX;
492 }
493
494 fbcon_map_override();
495 }
496 continue;
497 }
498
499 if (!strncmp(options, "vc:", 3)) {
500 options += 3;
501 if (*options)
502 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
503 if (first_fb_vc < 0)
504 first_fb_vc = 0;
505 if (*options++ == '-')
506 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
507 fbcon_is_default = 0;
508 continue;
509 }
510
511 if (!strncmp(options, "rotate:", 7)) {
512 options += 7;
513 if (*options)
514 initial_rotation = simple_strtoul(options, &options, 0);
515 if (initial_rotation > 3)
516 initial_rotation = 0;
517 continue;
518 }
519
520 if (!strncmp(options, "margin:", 7)) {
521 options += 7;
522 if (*options)
523 margin_color = simple_strtoul(options, &options, 0);
524 continue;
525 }
526 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
527 if (!strcmp(options, "nodefer")) {
528 deferred_takeover = false;
529 continue;
530 }
531 #endif
532
533 if (!strncmp(options, "logo-pos:", 9)) {
534 options += 9;
535 if (!strcmp(options, "center"))
536 fb_center_logo = true;
537 continue;
538 }
539 }
540 return 1;
541 }
542
543 __setup("fbcon=", fb_console_setup);
544 #endif
545
546 static int search_fb_in_map(int idx)
547 {
548 int i, retval = 0;
549
550 for (i = first_fb_vc; i <= last_fb_vc; i++) {
551 if (con2fb_map[i] == idx)
552 retval = 1;
553 }
554 return retval;
555 }
556
557 static int search_for_mapped_con(void)
558 {
559 int i, retval = 0;
560
561 for (i = first_fb_vc; i <= last_fb_vc; i++) {
562 if (con2fb_map[i] != -1)
563 retval = 1;
564 }
565 return retval;
566 }
567
568 static int do_fbcon_takeover(int show_logo)
569 {
570 int err, i;
571
572 if (!num_registered_fb)
573 return -ENODEV;
574
575 if (!show_logo)
576 logo_shown = FBCON_LOGO_DONTSHOW;
577
578 for (i = first_fb_vc; i <= last_fb_vc; i++)
579 con2fb_map[i] = info_idx;
580
581 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc,
582 fbcon_is_default);
583
584 if (err) {
585 for (i = first_fb_vc; i <= last_fb_vc; i++)
586 con2fb_map[i] = -1;
587 info_idx = -1;
588 } else {
589 fbcon_has_console_bind = 1;
590 }
591
592 return err;
593 }
594
595 #ifdef MODULE
596 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
597 int cols, int rows, int new_cols, int new_rows)
598 {
599 logo_shown = FBCON_LOGO_DONTSHOW;
600 }
601 #else
602 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
603 int cols, int rows, int new_cols, int new_rows)
604 {
605
606 struct fbcon_ops *ops = info->fbcon_par;
607 int cnt, erase = vc->vc_video_erase_char, step;
608 unsigned short *save = NULL, *r, *q;
609 int logo_height;
610
611 if (info->fbops->owner) {
612 logo_shown = FBCON_LOGO_DONTSHOW;
613 return;
614 }
615
616
617
618
619
620 if (fb_get_color_depth(&info->var, &info->fix) == 1)
621 erase &= ~0x400;
622 logo_height = fb_prepare_logo(info, ops->rotate);
623 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);
624 q = (unsigned short *) (vc->vc_origin +
625 vc->vc_size_row * rows);
626 step = logo_lines * cols;
627 for (r = q - logo_lines * cols; r < q; r++)
628 if (scr_readw(r) != vc->vc_video_erase_char)
629 break;
630 if (r != q && new_rows >= rows + logo_lines) {
631 save = kmalloc(array3_size(logo_lines, new_cols, 2),
632 GFP_KERNEL);
633 if (save) {
634 int i = cols < new_cols ? cols : new_cols;
635 scr_memsetw(save, erase, logo_lines * new_cols * 2);
636 r = q - step;
637 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
638 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
639 r = q;
640 }
641 }
642 if (r == q) {
643
644 r = q - step - cols;
645 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
646 scr_memcpyw(r + step, r, vc->vc_size_row);
647 r -= cols;
648 }
649 if (!save) {
650 int lines;
651 if (vc->vc_y + logo_lines >= rows)
652 lines = rows - vc->vc_y - 1;
653 else
654 lines = logo_lines;
655 vc->vc_y += lines;
656 vc->vc_pos += lines * vc->vc_size_row;
657 }
658 }
659 scr_memsetw((unsigned short *) vc->vc_origin,
660 erase,
661 vc->vc_size_row * logo_lines);
662
663 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) {
664 fbcon_clear_margins(vc, 0);
665 update_screen(vc);
666 }
667
668 if (save) {
669 q = (unsigned short *) (vc->vc_origin +
670 vc->vc_size_row *
671 rows);
672 scr_memcpyw(q, save, logo_lines * new_cols * 2);
673 vc->vc_y += logo_lines;
674 vc->vc_pos += logo_lines * vc->vc_size_row;
675 kfree(save);
676 }
677
678 if (logo_shown == FBCON_LOGO_DONTSHOW)
679 return;
680
681 if (logo_lines > vc->vc_bottom) {
682 logo_shown = FBCON_LOGO_CANSHOW;
683 printk(KERN_INFO
684 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
685 } else {
686 logo_shown = FBCON_LOGO_DRAW;
687 vc->vc_top = logo_lines;
688 }
689 }
690 #endif
691
692 #ifdef CONFIG_FB_TILEBLITTING
693 static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
694 {
695 struct fbcon_ops *ops = info->fbcon_par;
696
697 ops->p = &fb_display[vc->vc_num];
698
699 if ((info->flags & FBINFO_MISC_TILEBLITTING))
700 fbcon_set_tileops(vc, info);
701 else {
702 fbcon_set_rotation(info);
703 fbcon_set_bitops(ops);
704 }
705 }
706
707 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
708 {
709 int err = 0;
710
711 if (info->flags & FBINFO_MISC_TILEBLITTING &&
712 info->tileops->fb_get_tilemax(info) < charcount)
713 err = 1;
714
715 return err;
716 }
717 #else
718 static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
719 {
720 struct fbcon_ops *ops = info->fbcon_par;
721
722 info->flags &= ~FBINFO_MISC_TILEBLITTING;
723 ops->p = &fb_display[vc->vc_num];
724 fbcon_set_rotation(info);
725 fbcon_set_bitops(ops);
726 }
727
728 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
729 {
730 return 0;
731 }
732
733 #endif
734
735
736 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
737 int unit, int oldidx)
738 {
739 struct fbcon_ops *ops = NULL;
740 int err = 0;
741
742 if (!try_module_get(info->fbops->owner))
743 err = -ENODEV;
744
745 if (!err && info->fbops->fb_open &&
746 info->fbops->fb_open(info, 0))
747 err = -ENODEV;
748
749 if (!err) {
750 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
751 if (!ops)
752 err = -ENOMEM;
753 }
754
755 if (!err) {
756 ops->cur_blink_jiffies = HZ / 5;
757 ops->info = info;
758 info->fbcon_par = ops;
759
760 if (vc)
761 set_blitting_type(vc, info);
762 }
763
764 if (err) {
765 con2fb_map[unit] = oldidx;
766 module_put(info->fbops->owner);
767 }
768
769 return err;
770 }
771
772 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
773 struct fb_info *newinfo, int unit,
774 int oldidx, int found)
775 {
776 struct fbcon_ops *ops = oldinfo->fbcon_par;
777 int err = 0, ret;
778
779 if (oldinfo->fbops->fb_release &&
780 oldinfo->fbops->fb_release(oldinfo, 0)) {
781 con2fb_map[unit] = oldidx;
782 if (!found && newinfo->fbops->fb_release)
783 newinfo->fbops->fb_release(newinfo, 0);
784 if (!found)
785 module_put(newinfo->fbops->owner);
786 err = -ENODEV;
787 }
788
789 if (!err) {
790 fbcon_del_cursor_timer(oldinfo);
791 kfree(ops->cursor_state.mask);
792 kfree(ops->cursor_data);
793 kfree(ops->cursor_src);
794 kfree(ops->fontbuffer);
795 kfree(oldinfo->fbcon_par);
796 oldinfo->fbcon_par = NULL;
797 module_put(oldinfo->fbops->owner);
798
799
800
801
802
803
804
805 if (newinfo && newinfo->fbops->fb_set_par) {
806 ret = newinfo->fbops->fb_set_par(newinfo);
807
808 if (ret)
809 printk(KERN_ERR "con2fb_release_oldinfo: "
810 "detected unhandled fb_set_par error, "
811 "error code %d\n", ret);
812 }
813 }
814
815 return err;
816 }
817
818 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
819 int unit, int show_logo)
820 {
821 struct fbcon_ops *ops = info->fbcon_par;
822 int ret;
823
824 ops->currcon = fg_console;
825
826 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) {
827 ret = info->fbops->fb_set_par(info);
828
829 if (ret)
830 printk(KERN_ERR "con2fb_init_display: detected "
831 "unhandled fb_set_par error, "
832 "error code %d\n", ret);
833 }
834
835 ops->flags |= FBCON_FLAGS_INIT;
836 ops->graphics = 0;
837 fbcon_set_disp(info, &info->var, unit);
838
839 if (show_logo) {
840 struct vc_data *fg_vc = vc_cons[fg_console].d;
841 struct fb_info *fg_info =
842 registered_fb[con2fb_map[fg_console]];
843
844 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
845 fg_vc->vc_rows, fg_vc->vc_cols,
846 fg_vc->vc_rows);
847 }
848
849 update_screen(vc_cons[fg_console].d);
850 }
851
852
853
854
855
856
857
858
859
860
861
862
863 static int set_con2fb_map(int unit, int newidx, int user)
864 {
865 struct vc_data *vc = vc_cons[unit].d;
866 int oldidx = con2fb_map[unit];
867 struct fb_info *info = registered_fb[newidx];
868 struct fb_info *oldinfo = NULL;
869 int found, err = 0;
870
871 WARN_CONSOLE_UNLOCKED();
872
873 if (oldidx == newidx)
874 return 0;
875
876 if (!info)
877 return -EINVAL;
878
879 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) {
880 info_idx = newidx;
881 return do_fbcon_takeover(0);
882 }
883
884 if (oldidx != -1)
885 oldinfo = registered_fb[oldidx];
886
887 found = search_fb_in_map(newidx);
888
889 con2fb_map[unit] = newidx;
890 if (!err && !found)
891 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
892
893
894
895
896
897
898 if (!err && oldinfo && !search_fb_in_map(oldidx))
899 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
900 found);
901
902 if (!err) {
903 int show_logo = (fg_console == 0 && !user &&
904 logo_shown != FBCON_LOGO_DONTSHOW);
905
906 if (!found)
907 fbcon_add_cursor_timer(info);
908 con2fb_map_boot[unit] = newidx;
909 con2fb_init_display(vc, info, unit, show_logo);
910 }
911
912 if (!search_fb_in_map(info_idx))
913 info_idx = newidx;
914
915 return err;
916 }
917
918
919
920
921
922 static int var_to_display(struct fbcon_display *disp,
923 struct fb_var_screeninfo *var,
924 struct fb_info *info)
925 {
926 disp->xres_virtual = var->xres_virtual;
927 disp->yres_virtual = var->yres_virtual;
928 disp->bits_per_pixel = var->bits_per_pixel;
929 disp->grayscale = var->grayscale;
930 disp->nonstd = var->nonstd;
931 disp->accel_flags = var->accel_flags;
932 disp->height = var->height;
933 disp->width = var->width;
934 disp->red = var->red;
935 disp->green = var->green;
936 disp->blue = var->blue;
937 disp->transp = var->transp;
938 disp->rotate = var->rotate;
939 disp->mode = fb_match_mode(var, &info->modelist);
940 if (disp->mode == NULL)
941
942 return -EINVAL;
943 return 0;
944 }
945
946 static void display_to_var(struct fb_var_screeninfo *var,
947 struct fbcon_display *disp)
948 {
949 fb_videomode_to_var(var, disp->mode);
950 var->xres_virtual = disp->xres_virtual;
951 var->yres_virtual = disp->yres_virtual;
952 var->bits_per_pixel = disp->bits_per_pixel;
953 var->grayscale = disp->grayscale;
954 var->nonstd = disp->nonstd;
955 var->accel_flags = disp->accel_flags;
956 var->height = disp->height;
957 var->width = disp->width;
958 var->red = disp->red;
959 var->green = disp->green;
960 var->blue = disp->blue;
961 var->transp = disp->transp;
962 var->rotate = disp->rotate;
963 }
964
965 static const char *fbcon_startup(void)
966 {
967 const char *display_desc = "frame buffer device";
968 struct fbcon_display *p = &fb_display[fg_console];
969 struct vc_data *vc = vc_cons[fg_console].d;
970 const struct font_desc *font = NULL;
971 struct module *owner;
972 struct fb_info *info = NULL;
973 struct fbcon_ops *ops;
974 int rows, cols;
975
976
977
978
979
980 if (!num_registered_fb || info_idx == -1)
981 return display_desc;
982
983
984
985
986 info = registered_fb[info_idx];
987 if (!info)
988 return NULL;
989
990 owner = info->fbops->owner;
991 if (!try_module_get(owner))
992 return NULL;
993 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
994 module_put(owner);
995 return NULL;
996 }
997
998 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
999 if (!ops) {
1000 module_put(owner);
1001 return NULL;
1002 }
1003
1004 ops->currcon = -1;
1005 ops->graphics = 1;
1006 ops->cur_rotate = -1;
1007 ops->cur_blink_jiffies = HZ / 5;
1008 ops->info = info;
1009 info->fbcon_par = ops;
1010
1011 p->con_rotate = initial_rotation;
1012 if (p->con_rotate == -1)
1013 p->con_rotate = info->fbcon_rotate_hint;
1014 if (p->con_rotate == -1)
1015 p->con_rotate = FB_ROTATE_UR;
1016
1017 set_blitting_type(vc, info);
1018
1019 if (info->fix.type != FB_TYPE_TEXT) {
1020 if (fbcon_softback_size) {
1021 if (!softback_buf) {
1022 softback_buf =
1023 (unsigned long)
1024 kvmalloc(fbcon_softback_size,
1025 GFP_KERNEL);
1026 if (!softback_buf) {
1027 fbcon_softback_size = 0;
1028 softback_top = 0;
1029 }
1030 }
1031 } else {
1032 if (softback_buf) {
1033 kvfree((void *) softback_buf);
1034 softback_buf = 0;
1035 softback_top = 0;
1036 }
1037 }
1038 if (softback_buf)
1039 softback_in = softback_top = softback_curr =
1040 softback_buf;
1041 softback_lines = 0;
1042 }
1043
1044
1045 if (!p->fontdata && !vc->vc_font.data) {
1046 if (!fontname[0] || !(font = find_font(fontname)))
1047 font = get_default_font(info->var.xres,
1048 info->var.yres,
1049 info->pixmap.blit_x,
1050 info->pixmap.blit_y);
1051 vc->vc_font.width = font->width;
1052 vc->vc_font.height = font->height;
1053 vc->vc_font.data = (void *)(p->fontdata = font->data);
1054 vc->vc_font.charcount = 256;
1055 } else {
1056 p->fontdata = vc->vc_font.data;
1057 }
1058
1059 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1060 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1061 cols /= vc->vc_font.width;
1062 rows /= vc->vc_font.height;
1063 vc_resize(vc, cols, rows);
1064
1065 DPRINTK("mode: %s\n", info->fix.id);
1066 DPRINTK("visual: %d\n", info->fix.visual);
1067 DPRINTK("res: %dx%d-%d\n", info->var.xres,
1068 info->var.yres,
1069 info->var.bits_per_pixel);
1070
1071 fbcon_add_cursor_timer(info);
1072 return display_desc;
1073 }
1074
1075 static void fbcon_init(struct vc_data *vc, int init)
1076 {
1077 struct fb_info *info;
1078 struct fbcon_ops *ops;
1079 struct vc_data **default_mode = vc->vc_display_fg;
1080 struct vc_data *svc = *default_mode;
1081 struct fbcon_display *t, *p = &fb_display[vc->vc_num];
1082 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
1083 int cap, ret;
1084
1085 if (WARN_ON(info_idx == -1))
1086 return;
1087
1088 if (con2fb_map[vc->vc_num] == -1)
1089 con2fb_map[vc->vc_num] = info_idx;
1090
1091 info = registered_fb[con2fb_map[vc->vc_num]];
1092 cap = info->flags;
1093
1094 if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET)
1095 logo_shown = FBCON_LOGO_DONTSHOW;
1096
1097 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1098 (info->fix.type == FB_TYPE_TEXT))
1099 logo = 0;
1100
1101 if (var_to_display(p, &info->var, info))
1102 return;
1103
1104 if (!info->fbcon_par)
1105 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
1106
1107
1108
1109 t = &fb_display[fg_console];
1110 if (!p->fontdata) {
1111 if (t->fontdata) {
1112 struct vc_data *fvc = vc_cons[fg_console].d;
1113
1114 vc->vc_font.data = (void *)(p->fontdata =
1115 fvc->vc_font.data);
1116 vc->vc_font.width = fvc->vc_font.width;
1117 vc->vc_font.height = fvc->vc_font.height;
1118 p->userfont = t->userfont;
1119
1120 if (p->userfont)
1121 REFCOUNT(p->fontdata)++;
1122 } else {
1123 const struct font_desc *font = NULL;
1124
1125 if (!fontname[0] || !(font = find_font(fontname)))
1126 font = get_default_font(info->var.xres,
1127 info->var.yres,
1128 info->pixmap.blit_x,
1129 info->pixmap.blit_y);
1130 vc->vc_font.width = font->width;
1131 vc->vc_font.height = font->height;
1132 vc->vc_font.data = (void *)(p->fontdata = font->data);
1133 vc->vc_font.charcount = 256;
1134
1135 }
1136 }
1137
1138 if (p->userfont)
1139 charcnt = FNTCHARCNT(p->fontdata);
1140
1141 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1142 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1143 if (charcnt == 256) {
1144 vc->vc_hi_font_mask = 0;
1145 } else {
1146 vc->vc_hi_font_mask = 0x100;
1147 if (vc->vc_can_do_color)
1148 vc->vc_complement_mask <<= 1;
1149 }
1150
1151 if (!*svc->vc_uni_pagedir_loc)
1152 con_set_default_unimap(svc);
1153 if (!*vc->vc_uni_pagedir_loc)
1154 con_copy_unimap(vc, svc);
1155
1156 ops = info->fbcon_par;
1157 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
1158
1159 p->con_rotate = initial_rotation;
1160 if (p->con_rotate == -1)
1161 p->con_rotate = info->fbcon_rotate_hint;
1162 if (p->con_rotate == -1)
1163 p->con_rotate = FB_ROTATE_UR;
1164
1165 set_blitting_type(vc, info);
1166
1167 cols = vc->vc_cols;
1168 rows = vc->vc_rows;
1169 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1170 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1171 new_cols /= vc->vc_font.width;
1172 new_rows /= vc->vc_font.height;
1173
1174
1175
1176
1177
1178
1179
1180
1181 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) {
1182 if (info->fbops->fb_set_par &&
1183 !(ops->flags & FBCON_FLAGS_INIT)) {
1184 ret = info->fbops->fb_set_par(info);
1185
1186 if (ret)
1187 printk(KERN_ERR "fbcon_init: detected "
1188 "unhandled fb_set_par error, "
1189 "error code %d\n", ret);
1190 }
1191
1192 ops->flags |= FBCON_FLAGS_INIT;
1193 }
1194
1195 ops->graphics = 0;
1196
1197 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1198 !(cap & FBINFO_HWACCEL_DISABLED))
1199 p->scrollmode = SCROLL_MOVE;
1200 else
1201 p->scrollmode = SCROLL_REDRAW;
1202
1203
1204
1205
1206
1207
1208 if (init) {
1209 vc->vc_cols = new_cols;
1210 vc->vc_rows = new_rows;
1211 } else
1212 vc_resize(vc, new_cols, new_rows);
1213
1214 if (logo)
1215 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1216
1217 if (vc == svc && softback_buf)
1218 fbcon_update_softback(vc);
1219
1220 if (ops->rotate_font && ops->rotate_font(info, vc)) {
1221 ops->rotate = FB_ROTATE_UR;
1222 set_blitting_type(vc, info);
1223 }
1224
1225 ops->p = &fb_display[fg_console];
1226 }
1227
1228 static void fbcon_free_font(struct fbcon_display *p, bool freefont)
1229 {
1230 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
1231 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1232 p->fontdata = NULL;
1233 p->userfont = 0;
1234 }
1235
1236 static void set_vc_hi_font(struct vc_data *vc, bool set);
1237
1238 static void fbcon_deinit(struct vc_data *vc)
1239 {
1240 struct fbcon_display *p = &fb_display[vc->vc_num];
1241 struct fb_info *info;
1242 struct fbcon_ops *ops;
1243 int idx;
1244 bool free_font = true;
1245
1246 idx = con2fb_map[vc->vc_num];
1247
1248 if (idx == -1)
1249 goto finished;
1250
1251 info = registered_fb[idx];
1252
1253 if (!info)
1254 goto finished;
1255
1256 if (info->flags & FBINFO_MISC_FIRMWARE)
1257 free_font = false;
1258 ops = info->fbcon_par;
1259
1260 if (!ops)
1261 goto finished;
1262
1263 if (con_is_visible(vc))
1264 fbcon_del_cursor_timer(info);
1265
1266 ops->flags &= ~FBCON_FLAGS_INIT;
1267 finished:
1268
1269 fbcon_free_font(p, free_font);
1270 if (free_font)
1271 vc->vc_font.data = NULL;
1272
1273 if (vc->vc_hi_font_mask && vc->vc_screenbuf)
1274 set_vc_hi_font(vc, false);
1275
1276 if (!con_is_bound(&fb_con))
1277 fbcon_exit();
1278
1279 if (vc->vc_num == logo_shown)
1280 logo_shown = FBCON_LOGO_CANSHOW;
1281
1282 return;
1283 }
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1311 int width)
1312 {
1313 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1314 struct fbcon_ops *ops = info->fbcon_par;
1315
1316 struct fbcon_display *p = &fb_display[vc->vc_num];
1317 u_int y_break;
1318
1319 if (fbcon_is_inactive(vc, info))
1320 return;
1321
1322 if (!height || !width)
1323 return;
1324
1325 if (sy < vc->vc_top && vc->vc_top == logo_lines) {
1326 vc->vc_top = 0;
1327
1328
1329
1330
1331
1332
1333 fbcon_clear_margins(vc, 0);
1334 }
1335
1336
1337
1338 y_break = p->vrows - p->yscroll;
1339 if (sy < y_break && sy + height - 1 >= y_break) {
1340 u_int b = y_break - sy;
1341 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1342 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1343 width);
1344 } else
1345 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1346 }
1347
1348 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1349 int count, int ypos, int xpos)
1350 {
1351 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1352 struct fbcon_display *p = &fb_display[vc->vc_num];
1353 struct fbcon_ops *ops = info->fbcon_par;
1354
1355 if (!fbcon_is_inactive(vc, info))
1356 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1357 get_color(vc, info, scr_readw(s), 1),
1358 get_color(vc, info, scr_readw(s), 0));
1359 }
1360
1361 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1362 {
1363 unsigned short chr;
1364
1365 scr_writew(c, &chr);
1366 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1367 }
1368
1369 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1370 {
1371 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1372 struct fbcon_ops *ops = info->fbcon_par;
1373
1374 if (!fbcon_is_inactive(vc, info))
1375 ops->clear_margins(vc, info, margin_color, bottom_only);
1376 }
1377
1378 static void fbcon_cursor(struct vc_data *vc, int mode)
1379 {
1380 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1381 struct fbcon_ops *ops = info->fbcon_par;
1382 int y;
1383 int c = scr_readw((u16 *) vc->vc_pos);
1384
1385 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
1386
1387 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1388 return;
1389
1390 if (vc->vc_cursor_type & 0x10)
1391 fbcon_del_cursor_timer(info);
1392 else
1393 fbcon_add_cursor_timer(info);
1394
1395 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1396 if (mode & CM_SOFTBACK) {
1397 mode &= ~CM_SOFTBACK;
1398 y = softback_lines;
1399 } else {
1400 if (softback_lines)
1401 fbcon_set_origin(vc);
1402 y = 0;
1403 }
1404
1405 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1406 get_color(vc, info, c, 0));
1407 }
1408
1409 static int scrollback_phys_max = 0;
1410 static int scrollback_max = 0;
1411 static int scrollback_current = 0;
1412
1413 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1414 int unit)
1415 {
1416 struct fbcon_display *p, *t;
1417 struct vc_data **default_mode, *vc;
1418 struct vc_data *svc;
1419 struct fbcon_ops *ops = info->fbcon_par;
1420 int rows, cols, charcnt = 256;
1421
1422 p = &fb_display[unit];
1423
1424 if (var_to_display(p, var, info))
1425 return;
1426
1427 vc = vc_cons[unit].d;
1428
1429 if (!vc)
1430 return;
1431
1432 default_mode = vc->vc_display_fg;
1433 svc = *default_mode;
1434 t = &fb_display[svc->vc_num];
1435
1436 if (!vc->vc_font.data) {
1437 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1438 vc->vc_font.width = (*default_mode)->vc_font.width;
1439 vc->vc_font.height = (*default_mode)->vc_font.height;
1440 p->userfont = t->userfont;
1441 if (p->userfont)
1442 REFCOUNT(p->fontdata)++;
1443 }
1444 if (p->userfont)
1445 charcnt = FNTCHARCNT(p->fontdata);
1446
1447 var->activate = FB_ACTIVATE_NOW;
1448 info->var.activate = var->activate;
1449 var->yoffset = info->var.yoffset;
1450 var->xoffset = info->var.xoffset;
1451 fb_set_var(info, var);
1452 ops->var = info->var;
1453 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1454 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1455 if (charcnt == 256) {
1456 vc->vc_hi_font_mask = 0;
1457 } else {
1458 vc->vc_hi_font_mask = 0x100;
1459 if (vc->vc_can_do_color)
1460 vc->vc_complement_mask <<= 1;
1461 }
1462
1463 if (!*svc->vc_uni_pagedir_loc)
1464 con_set_default_unimap(svc);
1465 if (!*vc->vc_uni_pagedir_loc)
1466 con_copy_unimap(vc, svc);
1467
1468 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1469 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1470 cols /= vc->vc_font.width;
1471 rows /= vc->vc_font.height;
1472 vc_resize(vc, cols, rows);
1473
1474 if (con_is_visible(vc)) {
1475 update_screen(vc);
1476 if (softback_buf)
1477 fbcon_update_softback(vc);
1478 }
1479 }
1480
1481 static __inline__ void ywrap_up(struct vc_data *vc, int count)
1482 {
1483 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1484 struct fbcon_ops *ops = info->fbcon_par;
1485 struct fbcon_display *p = &fb_display[vc->vc_num];
1486
1487 p->yscroll += count;
1488 if (p->yscroll >= p->vrows)
1489 p->yscroll -= p->vrows;
1490 ops->var.xoffset = 0;
1491 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1492 ops->var.vmode |= FB_VMODE_YWRAP;
1493 ops->update_start(info);
1494 scrollback_max += count;
1495 if (scrollback_max > scrollback_phys_max)
1496 scrollback_max = scrollback_phys_max;
1497 scrollback_current = 0;
1498 }
1499
1500 static __inline__ void ywrap_down(struct vc_data *vc, int count)
1501 {
1502 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1503 struct fbcon_ops *ops = info->fbcon_par;
1504 struct fbcon_display *p = &fb_display[vc->vc_num];
1505
1506 p->yscroll -= count;
1507 if (p->yscroll < 0)
1508 p->yscroll += p->vrows;
1509 ops->var.xoffset = 0;
1510 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1511 ops->var.vmode |= FB_VMODE_YWRAP;
1512 ops->update_start(info);
1513 scrollback_max -= count;
1514 if (scrollback_max < 0)
1515 scrollback_max = 0;
1516 scrollback_current = 0;
1517 }
1518
1519 static __inline__ void ypan_up(struct vc_data *vc, int count)
1520 {
1521 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1522 struct fbcon_display *p = &fb_display[vc->vc_num];
1523 struct fbcon_ops *ops = info->fbcon_par;
1524
1525 p->yscroll += count;
1526 if (p->yscroll > p->vrows - vc->vc_rows) {
1527 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1528 0, 0, 0, vc->vc_rows, vc->vc_cols);
1529 p->yscroll -= p->vrows - vc->vc_rows;
1530 }
1531
1532 ops->var.xoffset = 0;
1533 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1534 ops->var.vmode &= ~FB_VMODE_YWRAP;
1535 ops->update_start(info);
1536 fbcon_clear_margins(vc, 1);
1537 scrollback_max += count;
1538 if (scrollback_max > scrollback_phys_max)
1539 scrollback_max = scrollback_phys_max;
1540 scrollback_current = 0;
1541 }
1542
1543 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1544 {
1545 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1546 struct fbcon_ops *ops = info->fbcon_par;
1547 struct fbcon_display *p = &fb_display[vc->vc_num];
1548
1549 p->yscroll += count;
1550
1551 if (p->yscroll > p->vrows - vc->vc_rows) {
1552 p->yscroll -= p->vrows - vc->vc_rows;
1553 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1554 }
1555
1556 ops->var.xoffset = 0;
1557 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1558 ops->var.vmode &= ~FB_VMODE_YWRAP;
1559 ops->update_start(info);
1560 fbcon_clear_margins(vc, 1);
1561 scrollback_max += count;
1562 if (scrollback_max > scrollback_phys_max)
1563 scrollback_max = scrollback_phys_max;
1564 scrollback_current = 0;
1565 }
1566
1567 static __inline__ void ypan_down(struct vc_data *vc, int count)
1568 {
1569 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1570 struct fbcon_display *p = &fb_display[vc->vc_num];
1571 struct fbcon_ops *ops = info->fbcon_par;
1572
1573 p->yscroll -= count;
1574 if (p->yscroll < 0) {
1575 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1576 0, vc->vc_rows, vc->vc_cols);
1577 p->yscroll += p->vrows - vc->vc_rows;
1578 }
1579
1580 ops->var.xoffset = 0;
1581 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1582 ops->var.vmode &= ~FB_VMODE_YWRAP;
1583 ops->update_start(info);
1584 fbcon_clear_margins(vc, 1);
1585 scrollback_max -= count;
1586 if (scrollback_max < 0)
1587 scrollback_max = 0;
1588 scrollback_current = 0;
1589 }
1590
1591 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1592 {
1593 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1594 struct fbcon_ops *ops = info->fbcon_par;
1595 struct fbcon_display *p = &fb_display[vc->vc_num];
1596
1597 p->yscroll -= count;
1598
1599 if (p->yscroll < 0) {
1600 p->yscroll += p->vrows - vc->vc_rows;
1601 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1602 }
1603
1604 ops->var.xoffset = 0;
1605 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1606 ops->var.vmode &= ~FB_VMODE_YWRAP;
1607 ops->update_start(info);
1608 fbcon_clear_margins(vc, 1);
1609 scrollback_max -= count;
1610 if (scrollback_max < 0)
1611 scrollback_max = 0;
1612 scrollback_current = 0;
1613 }
1614
1615 static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p,
1616 long delta)
1617 {
1618 int count = vc->vc_rows;
1619 unsigned short *d, *s;
1620 unsigned long n;
1621 int line = 0;
1622
1623 d = (u16 *) softback_curr;
1624 if (d == (u16 *) softback_in)
1625 d = (u16 *) vc->vc_origin;
1626 n = softback_curr + delta * vc->vc_size_row;
1627 softback_lines -= delta;
1628 if (delta < 0) {
1629 if (softback_curr < softback_top && n < softback_buf) {
1630 n += softback_end - softback_buf;
1631 if (n < softback_top) {
1632 softback_lines -=
1633 (softback_top - n) / vc->vc_size_row;
1634 n = softback_top;
1635 }
1636 } else if (softback_curr >= softback_top
1637 && n < softback_top) {
1638 softback_lines -=
1639 (softback_top - n) / vc->vc_size_row;
1640 n = softback_top;
1641 }
1642 } else {
1643 if (softback_curr > softback_in && n >= softback_end) {
1644 n += softback_buf - softback_end;
1645 if (n > softback_in) {
1646 n = softback_in;
1647 softback_lines = 0;
1648 }
1649 } else if (softback_curr <= softback_in && n > softback_in) {
1650 n = softback_in;
1651 softback_lines = 0;
1652 }
1653 }
1654 if (n == softback_curr)
1655 return;
1656 softback_curr = n;
1657 s = (u16 *) softback_curr;
1658 if (s == (u16 *) softback_in)
1659 s = (u16 *) vc->vc_origin;
1660 while (count--) {
1661 unsigned short *start;
1662 unsigned short *le;
1663 unsigned short c;
1664 int x = 0;
1665 unsigned short attr = 1;
1666
1667 start = s;
1668 le = advance_row(s, 1);
1669 do {
1670 c = scr_readw(s);
1671 if (attr != (c & 0xff00)) {
1672 attr = c & 0xff00;
1673 if (s > start) {
1674 fbcon_putcs(vc, start, s - start,
1675 line, x);
1676 x += s - start;
1677 start = s;
1678 }
1679 }
1680 if (c == scr_readw(d)) {
1681 if (s > start) {
1682 fbcon_putcs(vc, start, s - start,
1683 line, x);
1684 x += s - start + 1;
1685 start = s + 1;
1686 } else {
1687 x++;
1688 start++;
1689 }
1690 }
1691 s++;
1692 d++;
1693 } while (s < le);
1694 if (s > start)
1695 fbcon_putcs(vc, start, s - start, line, x);
1696 line++;
1697 if (d == (u16 *) softback_end)
1698 d = (u16 *) softback_buf;
1699 if (d == (u16 *) softback_in)
1700 d = (u16 *) vc->vc_origin;
1701 if (s == (u16 *) softback_end)
1702 s = (u16 *) softback_buf;
1703 if (s == (u16 *) softback_in)
1704 s = (u16 *) vc->vc_origin;
1705 }
1706 }
1707
1708 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
1709 int line, int count, int dy)
1710 {
1711 unsigned short *s = (unsigned short *)
1712 (vc->vc_origin + vc->vc_size_row * line);
1713
1714 while (count--) {
1715 unsigned short *start = s;
1716 unsigned short *le = advance_row(s, 1);
1717 unsigned short c;
1718 int x = 0;
1719 unsigned short attr = 1;
1720
1721 do {
1722 c = scr_readw(s);
1723 if (attr != (c & 0xff00)) {
1724 attr = c & 0xff00;
1725 if (s > start) {
1726 fbcon_putcs(vc, start, s - start,
1727 dy, x);
1728 x += s - start;
1729 start = s;
1730 }
1731 }
1732 console_conditional_schedule();
1733 s++;
1734 } while (s < le);
1735 if (s > start)
1736 fbcon_putcs(vc, start, s - start, dy, x);
1737 console_conditional_schedule();
1738 dy++;
1739 }
1740 }
1741
1742 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1743 struct fbcon_display *p, int line, int count, int ycount)
1744 {
1745 int offset = ycount * vc->vc_cols;
1746 unsigned short *d = (unsigned short *)
1747 (vc->vc_origin + vc->vc_size_row * line);
1748 unsigned short *s = d + offset;
1749 struct fbcon_ops *ops = info->fbcon_par;
1750
1751 while (count--) {
1752 unsigned short *start = s;
1753 unsigned short *le = advance_row(s, 1);
1754 unsigned short c;
1755 int x = 0;
1756
1757 do {
1758 c = scr_readw(s);
1759
1760 if (c == scr_readw(d)) {
1761 if (s > start) {
1762 ops->bmove(vc, info, line + ycount, x,
1763 line, x, 1, s-start);
1764 x += s - start + 1;
1765 start = s + 1;
1766 } else {
1767 x++;
1768 start++;
1769 }
1770 }
1771
1772 scr_writew(c, d);
1773 console_conditional_schedule();
1774 s++;
1775 d++;
1776 } while (s < le);
1777 if (s > start)
1778 ops->bmove(vc, info, line + ycount, x, line, x, 1,
1779 s-start);
1780 console_conditional_schedule();
1781 if (ycount > 0)
1782 line++;
1783 else {
1784 line--;
1785
1786 s -= vc->vc_size_row;
1787 d -= vc->vc_size_row;
1788 }
1789 }
1790 }
1791
1792 static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p,
1793 int line, int count, int offset)
1794 {
1795 unsigned short *d = (unsigned short *)
1796 (vc->vc_origin + vc->vc_size_row * line);
1797 unsigned short *s = d + offset;
1798
1799 while (count--) {
1800 unsigned short *start = s;
1801 unsigned short *le = advance_row(s, 1);
1802 unsigned short c;
1803 int x = 0;
1804 unsigned short attr = 1;
1805
1806 do {
1807 c = scr_readw(s);
1808 if (attr != (c & 0xff00)) {
1809 attr = c & 0xff00;
1810 if (s > start) {
1811 fbcon_putcs(vc, start, s - start,
1812 line, x);
1813 x += s - start;
1814 start = s;
1815 }
1816 }
1817 if (c == scr_readw(d)) {
1818 if (s > start) {
1819 fbcon_putcs(vc, start, s - start,
1820 line, x);
1821 x += s - start + 1;
1822 start = s + 1;
1823 } else {
1824 x++;
1825 start++;
1826 }
1827 }
1828 scr_writew(c, d);
1829 console_conditional_schedule();
1830 s++;
1831 d++;
1832 } while (s < le);
1833 if (s > start)
1834 fbcon_putcs(vc, start, s - start, line, x);
1835 console_conditional_schedule();
1836 if (offset > 0)
1837 line++;
1838 else {
1839 line--;
1840
1841 s -= vc->vc_size_row;
1842 d -= vc->vc_size_row;
1843 }
1844 }
1845 }
1846
1847 static inline void fbcon_softback_note(struct vc_data *vc, int t,
1848 int count)
1849 {
1850 unsigned short *p;
1851
1852 if (vc->vc_num != fg_console)
1853 return;
1854 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1855
1856 while (count) {
1857 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1858 count--;
1859 p = advance_row(p, 1);
1860 softback_in += vc->vc_size_row;
1861 if (softback_in == softback_end)
1862 softback_in = softback_buf;
1863 if (softback_in == softback_top) {
1864 softback_top += vc->vc_size_row;
1865 if (softback_top == softback_end)
1866 softback_top = softback_buf;
1867 }
1868 }
1869 softback_curr = softback_in;
1870 }
1871
1872 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
1873 enum con_scroll dir, unsigned int count)
1874 {
1875 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1876 struct fbcon_display *p = &fb_display[vc->vc_num];
1877 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1878
1879 if (fbcon_is_inactive(vc, info))
1880 return true;
1881
1882 fbcon_cursor(vc, CM_ERASE);
1883
1884
1885
1886
1887
1888
1889
1890 switch (dir) {
1891 case SM_UP:
1892 if (count > vc->vc_rows)
1893 count = vc->vc_rows;
1894 if (softback_top)
1895 fbcon_softback_note(vc, t, count);
1896 if (logo_shown >= 0)
1897 goto redraw_up;
1898 switch (p->scrollmode) {
1899 case SCROLL_MOVE:
1900 fbcon_redraw_blit(vc, info, p, t, b - t - count,
1901 count);
1902 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1903 scr_memsetw((unsigned short *) (vc->vc_origin +
1904 vc->vc_size_row *
1905 (b - count)),
1906 vc->vc_video_erase_char,
1907 vc->vc_size_row * count);
1908 return true;
1909 break;
1910
1911 case SCROLL_WRAP_MOVE:
1912 if (b - t - count > 3 * vc->vc_rows >> 2) {
1913 if (t > 0)
1914 fbcon_bmove(vc, 0, 0, count, 0, t,
1915 vc->vc_cols);
1916 ywrap_up(vc, count);
1917 if (vc->vc_rows - b > 0)
1918 fbcon_bmove(vc, b - count, 0, b, 0,
1919 vc->vc_rows - b,
1920 vc->vc_cols);
1921 } else if (info->flags & FBINFO_READS_FAST)
1922 fbcon_bmove(vc, t + count, 0, t, 0,
1923 b - t - count, vc->vc_cols);
1924 else
1925 goto redraw_up;
1926 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1927 break;
1928
1929 case SCROLL_PAN_REDRAW:
1930 if ((p->yscroll + count <=
1931 2 * (p->vrows - vc->vc_rows))
1932 && ((!scroll_partial && (b - t == vc->vc_rows))
1933 || (scroll_partial
1934 && (b - t - count >
1935 3 * vc->vc_rows >> 2)))) {
1936 if (t > 0)
1937 fbcon_redraw_move(vc, p, 0, t, count);
1938 ypan_up_redraw(vc, t, count);
1939 if (vc->vc_rows - b > 0)
1940 fbcon_redraw_move(vc, p, b,
1941 vc->vc_rows - b, b);
1942 } else
1943 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1944 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1945 break;
1946
1947 case SCROLL_PAN_MOVE:
1948 if ((p->yscroll + count <=
1949 2 * (p->vrows - vc->vc_rows))
1950 && ((!scroll_partial && (b - t == vc->vc_rows))
1951 || (scroll_partial
1952 && (b - t - count >
1953 3 * vc->vc_rows >> 2)))) {
1954 if (t > 0)
1955 fbcon_bmove(vc, 0, 0, count, 0, t,
1956 vc->vc_cols);
1957 ypan_up(vc, count);
1958 if (vc->vc_rows - b > 0)
1959 fbcon_bmove(vc, b - count, 0, b, 0,
1960 vc->vc_rows - b,
1961 vc->vc_cols);
1962 } else if (info->flags & FBINFO_READS_FAST)
1963 fbcon_bmove(vc, t + count, 0, t, 0,
1964 b - t - count, vc->vc_cols);
1965 else
1966 goto redraw_up;
1967 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1968 break;
1969
1970 case SCROLL_REDRAW:
1971 redraw_up:
1972 fbcon_redraw(vc, p, t, b - t - count,
1973 count * vc->vc_cols);
1974 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1975 scr_memsetw((unsigned short *) (vc->vc_origin +
1976 vc->vc_size_row *
1977 (b - count)),
1978 vc->vc_video_erase_char,
1979 vc->vc_size_row * count);
1980 return true;
1981 }
1982 break;
1983
1984 case SM_DOWN:
1985 if (count > vc->vc_rows)
1986 count = vc->vc_rows;
1987 if (logo_shown >= 0)
1988 goto redraw_down;
1989 switch (p->scrollmode) {
1990 case SCROLL_MOVE:
1991 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1992 -count);
1993 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1994 scr_memsetw((unsigned short *) (vc->vc_origin +
1995 vc->vc_size_row *
1996 t),
1997 vc->vc_video_erase_char,
1998 vc->vc_size_row * count);
1999 return true;
2000 break;
2001
2002 case SCROLL_WRAP_MOVE:
2003 if (b - t - count > 3 * vc->vc_rows >> 2) {
2004 if (vc->vc_rows - b > 0)
2005 fbcon_bmove(vc, b, 0, b - count, 0,
2006 vc->vc_rows - b,
2007 vc->vc_cols);
2008 ywrap_down(vc, count);
2009 if (t > 0)
2010 fbcon_bmove(vc, count, 0, 0, 0, t,
2011 vc->vc_cols);
2012 } else if (info->flags & FBINFO_READS_FAST)
2013 fbcon_bmove(vc, t, 0, t + count, 0,
2014 b - t - count, vc->vc_cols);
2015 else
2016 goto redraw_down;
2017 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2018 break;
2019
2020 case SCROLL_PAN_MOVE:
2021 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
2022 && ((!scroll_partial && (b - t == vc->vc_rows))
2023 || (scroll_partial
2024 && (b - t - count >
2025 3 * vc->vc_rows >> 2)))) {
2026 if (vc->vc_rows - b > 0)
2027 fbcon_bmove(vc, b, 0, b - count, 0,
2028 vc->vc_rows - b,
2029 vc->vc_cols);
2030 ypan_down(vc, count);
2031 if (t > 0)
2032 fbcon_bmove(vc, count, 0, 0, 0, t,
2033 vc->vc_cols);
2034 } else if (info->flags & FBINFO_READS_FAST)
2035 fbcon_bmove(vc, t, 0, t + count, 0,
2036 b - t - count, vc->vc_cols);
2037 else
2038 goto redraw_down;
2039 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2040 break;
2041
2042 case SCROLL_PAN_REDRAW:
2043 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
2044 && ((!scroll_partial && (b - t == vc->vc_rows))
2045 || (scroll_partial
2046 && (b - t - count >
2047 3 * vc->vc_rows >> 2)))) {
2048 if (vc->vc_rows - b > 0)
2049 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
2050 b - count);
2051 ypan_down_redraw(vc, t, count);
2052 if (t > 0)
2053 fbcon_redraw_move(vc, p, count, t, 0);
2054 } else
2055 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
2056 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2057 break;
2058
2059 case SCROLL_REDRAW:
2060 redraw_down:
2061 fbcon_redraw(vc, p, b - 1, b - t - count,
2062 -count * vc->vc_cols);
2063 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2064 scr_memsetw((unsigned short *) (vc->vc_origin +
2065 vc->vc_size_row *
2066 t),
2067 vc->vc_video_erase_char,
2068 vc->vc_size_row * count);
2069 return true;
2070 }
2071 }
2072 return false;
2073 }
2074
2075
2076 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
2077 int height, int width)
2078 {
2079 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2080 struct fbcon_display *p = &fb_display[vc->vc_num];
2081
2082 if (fbcon_is_inactive(vc, info))
2083 return;
2084
2085 if (!width || !height)
2086 return;
2087
2088
2089
2090
2091
2092
2093
2094
2095 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2096 p->vrows - p->yscroll);
2097 }
2098
2099 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx,
2100 int dy, int dx, int height, int width, u_int y_break)
2101 {
2102 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2103 struct fbcon_ops *ops = info->fbcon_par;
2104 u_int b;
2105
2106 if (sy < y_break && sy + height > y_break) {
2107 b = y_break - sy;
2108 if (dy < sy) {
2109 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2110 y_break);
2111 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2112 height - b, width, y_break);
2113 } else {
2114 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2115 height - b, width, y_break);
2116 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2117 y_break);
2118 }
2119 return;
2120 }
2121
2122 if (dy < y_break && dy + height > y_break) {
2123 b = y_break - dy;
2124 if (dy < sy) {
2125 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2126 y_break);
2127 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2128 height - b, width, y_break);
2129 } else {
2130 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2131 height - b, width, y_break);
2132 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2133 y_break);
2134 }
2135 return;
2136 }
2137 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2138 height, width);
2139 }
2140
2141 static void updatescrollmode(struct fbcon_display *p,
2142 struct fb_info *info,
2143 struct vc_data *vc)
2144 {
2145 struct fbcon_ops *ops = info->fbcon_par;
2146 int fh = vc->vc_font.height;
2147 int cap = info->flags;
2148 u16 t = 0;
2149 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2150 info->fix.xpanstep);
2151 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2152 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2153 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2154 info->var.xres_virtual);
2155 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2156 divides(ypan, vc->vc_font.height) && vyres > yres;
2157 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2158 divides(ywrap, vc->vc_font.height) &&
2159 divides(vc->vc_font.height, vyres) &&
2160 divides(vc->vc_font.height, yres);
2161 int reading_fast = cap & FBINFO_READS_FAST;
2162 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2163 !(cap & FBINFO_HWACCEL_DISABLED);
2164 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2165 !(cap & FBINFO_HWACCEL_DISABLED);
2166
2167 p->vrows = vyres/fh;
2168 if (yres > (fh * (vc->vc_rows + 1)))
2169 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2170 if ((yres % fh) && (vyres % fh < yres % fh))
2171 p->vrows--;
2172
2173 if (good_wrap || good_pan) {
2174 if (reading_fast || fast_copyarea)
2175 p->scrollmode = good_wrap ?
2176 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
2177 else
2178 p->scrollmode = good_wrap ? SCROLL_REDRAW :
2179 SCROLL_PAN_REDRAW;
2180 } else {
2181 if (reading_fast || (fast_copyarea && !fast_imageblit))
2182 p->scrollmode = SCROLL_MOVE;
2183 else
2184 p->scrollmode = SCROLL_REDRAW;
2185 }
2186 }
2187
2188 static int fbcon_resize(struct vc_data *vc, unsigned int width,
2189 unsigned int height, unsigned int user)
2190 {
2191 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2192 struct fbcon_ops *ops = info->fbcon_par;
2193 struct fbcon_display *p = &fb_display[vc->vc_num];
2194 struct fb_var_screeninfo var = info->var;
2195 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2196
2197 virt_w = FBCON_SWAP(ops->rotate, width, height);
2198 virt_h = FBCON_SWAP(ops->rotate, height, width);
2199 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2200 vc->vc_font.height);
2201 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2202 vc->vc_font.width);
2203 var.xres = virt_w * virt_fw;
2204 var.yres = virt_h * virt_fh;
2205 x_diff = info->var.xres - var.xres;
2206 y_diff = info->var.yres - var.yres;
2207 if (x_diff < 0 || x_diff > virt_fw ||
2208 y_diff < 0 || y_diff > virt_fh) {
2209 const struct fb_videomode *mode;
2210
2211 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2212 mode = fb_find_best_mode(&var, &info->modelist);
2213 if (mode == NULL)
2214 return -EINVAL;
2215 display_to_var(&var, p);
2216 fb_videomode_to_var(&var, mode);
2217
2218 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
2219 return -EINVAL;
2220
2221 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
2222 if (con_is_visible(vc)) {
2223 var.activate = FB_ACTIVATE_NOW |
2224 FB_ACTIVATE_FORCE;
2225 fb_set_var(info, &var);
2226 }
2227 var_to_display(p, &info->var, info);
2228 ops->var = info->var;
2229 }
2230 updatescrollmode(p, info, vc);
2231 return 0;
2232 }
2233
2234 static int fbcon_switch(struct vc_data *vc)
2235 {
2236 struct fb_info *info, *old_info = NULL;
2237 struct fbcon_ops *ops;
2238 struct fbcon_display *p = &fb_display[vc->vc_num];
2239 struct fb_var_screeninfo var;
2240 int i, ret, prev_console, charcnt = 256;
2241
2242 info = registered_fb[con2fb_map[vc->vc_num]];
2243 ops = info->fbcon_par;
2244
2245 if (softback_top) {
2246 if (softback_lines)
2247 fbcon_set_origin(vc);
2248 softback_top = softback_curr = softback_in = softback_buf;
2249 softback_lines = 0;
2250 fbcon_update_softback(vc);
2251 }
2252
2253 if (logo_shown >= 0) {
2254 struct vc_data *conp2 = vc_cons[logo_shown].d;
2255
2256 if (conp2->vc_top == logo_lines
2257 && conp2->vc_bottom == conp2->vc_rows)
2258 conp2->vc_top = 0;
2259 logo_shown = FBCON_LOGO_CANSHOW;
2260 }
2261
2262 prev_console = ops->currcon;
2263 if (prev_console != -1)
2264 old_info = registered_fb[con2fb_map[prev_console]];
2265
2266
2267
2268
2269
2270
2271
2272
2273 for_each_registered_fb(i) {
2274 if (registered_fb[i]->fbcon_par) {
2275 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
2276
2277 o->currcon = vc->vc_num;
2278 }
2279 }
2280 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2281 display_to_var(&var, p);
2282 var.activate = FB_ACTIVATE_NOW;
2283
2284
2285
2286
2287
2288 info->var.activate = var.activate;
2289 var.vmode |= info->var.vmode & ~FB_VMODE_MASK;
2290 fb_set_var(info, &var);
2291 ops->var = info->var;
2292
2293 if (old_info != NULL && (old_info != info ||
2294 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
2295 if (info->fbops->fb_set_par) {
2296 ret = info->fbops->fb_set_par(info);
2297
2298 if (ret)
2299 printk(KERN_ERR "fbcon_switch: detected "
2300 "unhandled fb_set_par error, "
2301 "error code %d\n", ret);
2302 }
2303
2304 if (old_info != info)
2305 fbcon_del_cursor_timer(old_info);
2306 }
2307
2308 if (fbcon_is_inactive(vc, info) ||
2309 ops->blank_state != FB_BLANK_UNBLANK)
2310 fbcon_del_cursor_timer(info);
2311 else
2312 fbcon_add_cursor_timer(info);
2313
2314 set_blitting_type(vc, info);
2315 ops->cursor_reset = 1;
2316
2317 if (ops->rotate_font && ops->rotate_font(info, vc)) {
2318 ops->rotate = FB_ROTATE_UR;
2319 set_blitting_type(vc, info);
2320 }
2321
2322 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
2323 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
2324
2325 if (p->userfont)
2326 charcnt = FNTCHARCNT(vc->vc_font.data);
2327
2328 if (charcnt > 256)
2329 vc->vc_complement_mask <<= 1;
2330
2331 updatescrollmode(p, info, vc);
2332
2333 switch (p->scrollmode) {
2334 case SCROLL_WRAP_MOVE:
2335 scrollback_phys_max = p->vrows - vc->vc_rows;
2336 break;
2337 case SCROLL_PAN_MOVE:
2338 case SCROLL_PAN_REDRAW:
2339 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2340 if (scrollback_phys_max < 0)
2341 scrollback_phys_max = 0;
2342 break;
2343 default:
2344 scrollback_phys_max = 0;
2345 break;
2346 }
2347
2348 scrollback_max = 0;
2349 scrollback_current = 0;
2350
2351 if (!fbcon_is_inactive(vc, info)) {
2352 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2353 ops->update_start(info);
2354 }
2355
2356 fbcon_set_palette(vc, color_table);
2357 fbcon_clear_margins(vc, 0);
2358
2359 if (logo_shown == FBCON_LOGO_DRAW) {
2360
2361 logo_shown = fg_console;
2362
2363 fb_show_logo(info, ops->rotate);
2364 update_region(vc,
2365 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2366 vc->vc_size_row * (vc->vc_bottom -
2367 vc->vc_top) / 2);
2368 return 0;
2369 }
2370 return 1;
2371 }
2372
2373 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2374 int blank)
2375 {
2376 if (blank) {
2377 unsigned short charmask = vc->vc_hi_font_mask ?
2378 0x1ff : 0xff;
2379 unsigned short oldc;
2380
2381 oldc = vc->vc_video_erase_char;
2382 vc->vc_video_erase_char &= charmask;
2383 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2384 vc->vc_video_erase_char = oldc;
2385 }
2386 }
2387
2388 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2389 {
2390 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2391 struct fbcon_ops *ops = info->fbcon_par;
2392
2393 if (mode_switch) {
2394 struct fb_var_screeninfo var = info->var;
2395
2396 ops->graphics = 1;
2397
2398 if (!blank) {
2399 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2400 fb_set_var(info, &var);
2401 ops->graphics = 0;
2402 ops->var = info->var;
2403 }
2404 }
2405
2406 if (!fbcon_is_inactive(vc, info)) {
2407 if (ops->blank_state != blank) {
2408 ops->blank_state = blank;
2409 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2410 ops->cursor_flash = (!blank);
2411
2412 if (fb_blank(info, blank))
2413 fbcon_generic_blank(vc, info, blank);
2414 }
2415
2416 if (!blank)
2417 update_screen(vc);
2418 }
2419
2420 if (mode_switch || fbcon_is_inactive(vc, info) ||
2421 ops->blank_state != FB_BLANK_UNBLANK)
2422 fbcon_del_cursor_timer(info);
2423 else
2424 fbcon_add_cursor_timer(info);
2425
2426 return 0;
2427 }
2428
2429 static int fbcon_debug_enter(struct vc_data *vc)
2430 {
2431 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2432 struct fbcon_ops *ops = info->fbcon_par;
2433
2434 ops->save_graphics = ops->graphics;
2435 ops->graphics = 0;
2436 if (info->fbops->fb_debug_enter)
2437 info->fbops->fb_debug_enter(info);
2438 fbcon_set_palette(vc, color_table);
2439 return 0;
2440 }
2441
2442 static int fbcon_debug_leave(struct vc_data *vc)
2443 {
2444 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2445 struct fbcon_ops *ops = info->fbcon_par;
2446
2447 ops->graphics = ops->save_graphics;
2448 if (info->fbops->fb_debug_leave)
2449 info->fbops->fb_debug_leave(info);
2450 return 0;
2451 }
2452
2453 static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2454 {
2455 u8 *fontdata = vc->vc_font.data;
2456 u8 *data = font->data;
2457 int i, j;
2458
2459 font->width = vc->vc_font.width;
2460 font->height = vc->vc_font.height;
2461 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2462 if (!font->data)
2463 return 0;
2464
2465 if (font->width <= 8) {
2466 j = vc->vc_font.height;
2467 for (i = 0; i < font->charcount; i++) {
2468 memcpy(data, fontdata, j);
2469 memset(data + j, 0, 32 - j);
2470 data += 32;
2471 fontdata += j;
2472 }
2473 } else if (font->width <= 16) {
2474 j = vc->vc_font.height * 2;
2475 for (i = 0; i < font->charcount; i++) {
2476 memcpy(data, fontdata, j);
2477 memset(data + j, 0, 64 - j);
2478 data += 64;
2479 fontdata += j;
2480 }
2481 } else if (font->width <= 24) {
2482 for (i = 0; i < font->charcount; i++) {
2483 for (j = 0; j < vc->vc_font.height; j++) {
2484 *data++ = fontdata[0];
2485 *data++ = fontdata[1];
2486 *data++ = fontdata[2];
2487 fontdata += sizeof(u32);
2488 }
2489 memset(data, 0, 3 * (32 - j));
2490 data += 3 * (32 - j);
2491 }
2492 } else {
2493 j = vc->vc_font.height * 4;
2494 for (i = 0; i < font->charcount; i++) {
2495 memcpy(data, fontdata, j);
2496 memset(data + j, 0, 128 - j);
2497 data += 128;
2498 fontdata += j;
2499 }
2500 }
2501 return 0;
2502 }
2503
2504
2505 static void set_vc_hi_font(struct vc_data *vc, bool set)
2506 {
2507 if (!set) {
2508 vc->vc_hi_font_mask = 0;
2509 if (vc->vc_can_do_color) {
2510 vc->vc_complement_mask >>= 1;
2511 vc->vc_s_complement_mask >>= 1;
2512 }
2513
2514
2515 if (vc->vc_can_do_color) {
2516 unsigned short *cp =
2517 (unsigned short *) vc->vc_origin;
2518 int count = vc->vc_screenbuf_size / 2;
2519 unsigned short c;
2520 for (; count > 0; count--, cp++) {
2521 c = scr_readw(cp);
2522 scr_writew(((c & 0xfe00) >> 1) |
2523 (c & 0xff), cp);
2524 }
2525 c = vc->vc_video_erase_char;
2526 vc->vc_video_erase_char =
2527 ((c & 0xfe00) >> 1) | (c & 0xff);
2528 vc->vc_attr >>= 1;
2529 }
2530 } else {
2531 vc->vc_hi_font_mask = 0x100;
2532 if (vc->vc_can_do_color) {
2533 vc->vc_complement_mask <<= 1;
2534 vc->vc_s_complement_mask <<= 1;
2535 }
2536
2537
2538 {
2539 unsigned short *cp =
2540 (unsigned short *) vc->vc_origin;
2541 int count = vc->vc_screenbuf_size / 2;
2542 unsigned short c;
2543 for (; count > 0; count--, cp++) {
2544 unsigned short newc;
2545 c = scr_readw(cp);
2546 if (vc->vc_can_do_color)
2547 newc =
2548 ((c & 0xff00) << 1) | (c &
2549 0xff);
2550 else
2551 newc = c & ~0x100;
2552 scr_writew(newc, cp);
2553 }
2554 c = vc->vc_video_erase_char;
2555 if (vc->vc_can_do_color) {
2556 vc->vc_video_erase_char =
2557 ((c & 0xff00) << 1) | (c & 0xff);
2558 vc->vc_attr <<= 1;
2559 } else
2560 vc->vc_video_erase_char = c & ~0x100;
2561 }
2562 }
2563 }
2564
2565 static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2566 const u8 * data, int userfont)
2567 {
2568 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2569 struct fbcon_ops *ops = info->fbcon_par;
2570 struct fbcon_display *p = &fb_display[vc->vc_num];
2571 int resize;
2572 int cnt;
2573 char *old_data = NULL;
2574
2575 if (con_is_visible(vc) && softback_lines)
2576 fbcon_set_origin(vc);
2577
2578 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2579 if (p->userfont)
2580 old_data = vc->vc_font.data;
2581 if (userfont)
2582 cnt = FNTCHARCNT(data);
2583 else
2584 cnt = 256;
2585 vc->vc_font.data = (void *)(p->fontdata = data);
2586 if ((p->userfont = userfont))
2587 REFCOUNT(data)++;
2588 vc->vc_font.width = w;
2589 vc->vc_font.height = h;
2590 if (vc->vc_hi_font_mask && cnt == 256)
2591 set_vc_hi_font(vc, false);
2592 else if (!vc->vc_hi_font_mask && cnt == 512)
2593 set_vc_hi_font(vc, true);
2594
2595 if (resize) {
2596 int cols, rows;
2597
2598 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2599 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2600 cols /= w;
2601 rows /= h;
2602 vc_resize(vc, cols, rows);
2603 if (con_is_visible(vc) && softback_buf)
2604 fbcon_update_softback(vc);
2605 } else if (con_is_visible(vc)
2606 && vc->vc_mode == KD_TEXT) {
2607 fbcon_clear_margins(vc, 0);
2608 update_screen(vc);
2609 }
2610
2611 if (old_data && (--REFCOUNT(old_data) == 0))
2612 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2613 return 0;
2614 }
2615
2616 static int fbcon_copy_font(struct vc_data *vc, int con)
2617 {
2618 struct fbcon_display *od = &fb_display[con];
2619 struct console_font *f = &vc->vc_font;
2620
2621 if (od->fontdata == f->data)
2622 return 0;
2623 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2624 }
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638 static int fbcon_set_font(struct vc_data *vc, struct console_font *font,
2639 unsigned int flags)
2640 {
2641 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2642 unsigned charcount = font->charcount;
2643 int w = font->width;
2644 int h = font->height;
2645 int size;
2646 int i, csum;
2647 u8 *new_data, *data = font->data;
2648 int pitch = (font->width+7) >> 3;
2649
2650
2651
2652 if (charcount != 256 && charcount != 512)
2653 return -EINVAL;
2654
2655
2656 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2657 !(info->pixmap.blit_y & (1 << (font->height - 1))))
2658 return -EINVAL;
2659
2660
2661 if (fbcon_invalid_charcount(info, charcount))
2662 return -EINVAL;
2663
2664 size = h * pitch * charcount;
2665
2666 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2667
2668 if (!new_data)
2669 return -ENOMEM;
2670
2671 new_data += FONT_EXTRA_WORDS * sizeof(int);
2672 FNTSIZE(new_data) = size;
2673 FNTCHARCNT(new_data) = charcount;
2674 REFCOUNT(new_data) = 0;
2675 for (i=0; i< charcount; i++) {
2676 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2677 }
2678
2679
2680
2681 csum = crc32(0, new_data, size);
2682
2683 FNTSUM(new_data) = csum;
2684
2685 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2686 struct vc_data *tmp = vc_cons[i].d;
2687
2688 if (fb_display[i].userfont &&
2689 fb_display[i].fontdata &&
2690 FNTSUM(fb_display[i].fontdata) == csum &&
2691 FNTSIZE(fb_display[i].fontdata) == size &&
2692 tmp->vc_font.width == w &&
2693 !memcmp(fb_display[i].fontdata, new_data, size)) {
2694 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2695 new_data = (u8 *)fb_display[i].fontdata;
2696 break;
2697 }
2698 }
2699 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2700 }
2701
2702 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2703 {
2704 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2705 const struct font_desc *f;
2706
2707 if (!name)
2708 f = get_default_font(info->var.xres, info->var.yres,
2709 info->pixmap.blit_x, info->pixmap.blit_y);
2710 else if (!(f = find_font(name)))
2711 return -ENOENT;
2712
2713 font->width = f->width;
2714 font->height = f->height;
2715 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2716 }
2717
2718 static u16 palette_red[16];
2719 static u16 palette_green[16];
2720 static u16 palette_blue[16];
2721
2722 static struct fb_cmap palette_cmap = {
2723 0, 16, palette_red, palette_green, palette_blue, NULL
2724 };
2725
2726 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table)
2727 {
2728 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2729 int i, j, k, depth;
2730 u8 val;
2731
2732 if (fbcon_is_inactive(vc, info))
2733 return;
2734
2735 if (!con_is_visible(vc))
2736 return;
2737
2738 depth = fb_get_color_depth(&info->var, &info->fix);
2739 if (depth > 3) {
2740 for (i = j = 0; i < 16; i++) {
2741 k = table[i];
2742 val = vc->vc_palette[j++];
2743 palette_red[k] = (val << 8) | val;
2744 val = vc->vc_palette[j++];
2745 palette_green[k] = (val << 8) | val;
2746 val = vc->vc_palette[j++];
2747 palette_blue[k] = (val << 8) | val;
2748 }
2749 palette_cmap.len = 16;
2750 palette_cmap.start = 0;
2751
2752
2753
2754
2755 } else
2756 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2757
2758 fb_set_cmap(&palette_cmap, info);
2759 }
2760
2761 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2762 {
2763 unsigned long p;
2764 int line;
2765
2766 if (vc->vc_num != fg_console || !softback_lines)
2767 return (u16 *) (vc->vc_origin + offset);
2768 line = offset / vc->vc_size_row;
2769 if (line >= softback_lines)
2770 return (u16 *) (vc->vc_origin + offset -
2771 softback_lines * vc->vc_size_row);
2772 p = softback_curr + offset;
2773 if (p >= softback_end)
2774 p += softback_buf - softback_end;
2775 return (u16 *) p;
2776 }
2777
2778 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2779 int *px, int *py)
2780 {
2781 unsigned long ret;
2782 int x, y;
2783
2784 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2785 unsigned long offset = (pos - vc->vc_origin) / 2;
2786
2787 x = offset % vc->vc_cols;
2788 y = offset / vc->vc_cols;
2789 if (vc->vc_num == fg_console)
2790 y += softback_lines;
2791 ret = pos + (vc->vc_cols - x) * 2;
2792 } else if (vc->vc_num == fg_console && softback_lines) {
2793 unsigned long offset = pos - softback_curr;
2794
2795 if (pos < softback_curr)
2796 offset += softback_end - softback_buf;
2797 offset /= 2;
2798 x = offset % vc->vc_cols;
2799 y = offset / vc->vc_cols;
2800 ret = pos + (vc->vc_cols - x) * 2;
2801 if (ret == softback_end)
2802 ret = softback_buf;
2803 if (ret == softback_in)
2804 ret = vc->vc_origin;
2805 } else {
2806
2807 x = y = 0;
2808 ret = vc->vc_origin;
2809 }
2810 if (px)
2811 *px = x;
2812 if (py)
2813 *py = y;
2814 return ret;
2815 }
2816
2817
2818
2819 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2820 {
2821 while (cnt--) {
2822 u16 a = scr_readw(p);
2823 if (!vc->vc_can_do_color)
2824 a ^= 0x0800;
2825 else if (vc->vc_hi_font_mask == 0x100)
2826 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2827 (((a) & 0x0e00) << 4);
2828 else
2829 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2830 (((a) & 0x0700) << 4);
2831 scr_writew(a, p++);
2832 if (p == (u16 *) softback_end)
2833 p = (u16 *) softback_buf;
2834 if (p == (u16 *) softback_in)
2835 p = (u16 *) vc->vc_origin;
2836 }
2837 }
2838
2839 static void fbcon_scrolldelta(struct vc_data *vc, int lines)
2840 {
2841 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2842 struct fbcon_ops *ops = info->fbcon_par;
2843 struct fbcon_display *disp = &fb_display[fg_console];
2844 int offset, limit, scrollback_old;
2845
2846 if (softback_top) {
2847 if (vc->vc_num != fg_console)
2848 return;
2849 if (vc->vc_mode != KD_TEXT || !lines)
2850 return;
2851 if (logo_shown >= 0) {
2852 struct vc_data *conp2 = vc_cons[logo_shown].d;
2853
2854 if (conp2->vc_top == logo_lines
2855 && conp2->vc_bottom == conp2->vc_rows)
2856 conp2->vc_top = 0;
2857 if (logo_shown == vc->vc_num) {
2858 unsigned long p, q;
2859 int i;
2860
2861 p = softback_in;
2862 q = vc->vc_origin +
2863 logo_lines * vc->vc_size_row;
2864 for (i = 0; i < logo_lines; i++) {
2865 if (p == softback_top)
2866 break;
2867 if (p == softback_buf)
2868 p = softback_end;
2869 p -= vc->vc_size_row;
2870 q -= vc->vc_size_row;
2871 scr_memcpyw((u16 *) q, (u16 *) p,
2872 vc->vc_size_row);
2873 }
2874 softback_in = softback_curr = p;
2875 update_region(vc, vc->vc_origin,
2876 logo_lines * vc->vc_cols);
2877 }
2878 logo_shown = FBCON_LOGO_CANSHOW;
2879 }
2880 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2881 fbcon_redraw_softback(vc, disp, lines);
2882 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2883 return;
2884 }
2885
2886 if (!scrollback_phys_max)
2887 return;
2888
2889 scrollback_old = scrollback_current;
2890 scrollback_current -= lines;
2891 if (scrollback_current < 0)
2892 scrollback_current = 0;
2893 else if (scrollback_current > scrollback_max)
2894 scrollback_current = scrollback_max;
2895 if (scrollback_current == scrollback_old)
2896 return;
2897
2898 if (fbcon_is_inactive(vc, info))
2899 return;
2900
2901 fbcon_cursor(vc, CM_ERASE);
2902
2903 offset = disp->yscroll - scrollback_current;
2904 limit = disp->vrows;
2905 switch (disp->scrollmode) {
2906 case SCROLL_WRAP_MOVE:
2907 info->var.vmode |= FB_VMODE_YWRAP;
2908 break;
2909 case SCROLL_PAN_MOVE:
2910 case SCROLL_PAN_REDRAW:
2911 limit -= vc->vc_rows;
2912 info->var.vmode &= ~FB_VMODE_YWRAP;
2913 break;
2914 }
2915 if (offset < 0)
2916 offset += limit;
2917 else if (offset >= limit)
2918 offset -= limit;
2919
2920 ops->var.xoffset = 0;
2921 ops->var.yoffset = offset * vc->vc_font.height;
2922 ops->update_start(info);
2923
2924 if (!scrollback_current)
2925 fbcon_cursor(vc, CM_DRAW);
2926 }
2927
2928 static int fbcon_set_origin(struct vc_data *vc)
2929 {
2930 if (softback_lines)
2931 fbcon_scrolldelta(vc, softback_lines);
2932 return 0;
2933 }
2934
2935 void fbcon_suspended(struct fb_info *info)
2936 {
2937 struct vc_data *vc = NULL;
2938 struct fbcon_ops *ops = info->fbcon_par;
2939
2940 if (!ops || ops->currcon < 0)
2941 return;
2942 vc = vc_cons[ops->currcon].d;
2943
2944
2945 fbcon_cursor(vc, CM_ERASE);
2946 }
2947
2948 void fbcon_resumed(struct fb_info *info)
2949 {
2950 struct vc_data *vc;
2951 struct fbcon_ops *ops = info->fbcon_par;
2952
2953 if (!ops || ops->currcon < 0)
2954 return;
2955 vc = vc_cons[ops->currcon].d;
2956
2957 update_screen(vc);
2958 }
2959
2960 static void fbcon_modechanged(struct fb_info *info)
2961 {
2962 struct fbcon_ops *ops = info->fbcon_par;
2963 struct vc_data *vc;
2964 struct fbcon_display *p;
2965 int rows, cols;
2966
2967 if (!ops || ops->currcon < 0)
2968 return;
2969 vc = vc_cons[ops->currcon].d;
2970 if (vc->vc_mode != KD_TEXT ||
2971 registered_fb[con2fb_map[ops->currcon]] != info)
2972 return;
2973
2974 p = &fb_display[vc->vc_num];
2975 set_blitting_type(vc, info);
2976
2977 if (con_is_visible(vc)) {
2978 var_to_display(p, &info->var, info);
2979 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2980 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2981 cols /= vc->vc_font.width;
2982 rows /= vc->vc_font.height;
2983 vc_resize(vc, cols, rows);
2984 updatescrollmode(p, info, vc);
2985 scrollback_max = 0;
2986 scrollback_current = 0;
2987
2988 if (!fbcon_is_inactive(vc, info)) {
2989 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2990 ops->update_start(info);
2991 }
2992
2993 fbcon_set_palette(vc, color_table);
2994 update_screen(vc);
2995 if (softback_buf)
2996 fbcon_update_softback(vc);
2997 }
2998 }
2999
3000 static void fbcon_set_all_vcs(struct fb_info *info)
3001 {
3002 struct fbcon_ops *ops = info->fbcon_par;
3003 struct vc_data *vc;
3004 struct fbcon_display *p;
3005 int i, rows, cols, fg = -1;
3006
3007 if (!ops || ops->currcon < 0)
3008 return;
3009
3010 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3011 vc = vc_cons[i].d;
3012 if (!vc || vc->vc_mode != KD_TEXT ||
3013 registered_fb[con2fb_map[i]] != info)
3014 continue;
3015
3016 if (con_is_visible(vc)) {
3017 fg = i;
3018 continue;
3019 }
3020
3021 p = &fb_display[vc->vc_num];
3022 set_blitting_type(vc, info);
3023 var_to_display(p, &info->var, info);
3024 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
3025 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
3026 cols /= vc->vc_font.width;
3027 rows /= vc->vc_font.height;
3028 vc_resize(vc, cols, rows);
3029 }
3030
3031 if (fg != -1)
3032 fbcon_modechanged(info);
3033 }
3034
3035
3036 void fbcon_update_vcs(struct fb_info *info, bool all)
3037 {
3038 if (all)
3039 fbcon_set_all_vcs(info);
3040 else
3041 fbcon_modechanged(info);
3042 }
3043 EXPORT_SYMBOL(fbcon_update_vcs);
3044
3045 int fbcon_mode_deleted(struct fb_info *info,
3046 struct fb_videomode *mode)
3047 {
3048 struct fb_info *fb_info;
3049 struct fbcon_display *p;
3050 int i, j, found = 0;
3051
3052
3053 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3054 j = con2fb_map[i];
3055 if (j == -1)
3056 continue;
3057 fb_info = registered_fb[j];
3058 if (fb_info != info)
3059 continue;
3060 p = &fb_display[i];
3061 if (!p || !p->mode)
3062 continue;
3063 if (fb_mode_is_equal(p->mode, mode)) {
3064 found = 1;
3065 break;
3066 }
3067 }
3068 return found;
3069 }
3070
3071 #ifdef CONFIG_VT_HW_CONSOLE_BINDING
3072 static void fbcon_unbind(void)
3073 {
3074 int ret;
3075
3076 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc,
3077 fbcon_is_default);
3078
3079 if (!ret)
3080 fbcon_has_console_bind = 0;
3081 }
3082 #else
3083 static inline void fbcon_unbind(void) {}
3084 #endif
3085
3086
3087 void fbcon_fb_unbind(struct fb_info *info)
3088 {
3089 int i, new_idx = -1, ret = 0;
3090 int idx = info->node;
3091
3092 WARN_CONSOLE_UNLOCKED();
3093
3094 if (!fbcon_has_console_bind)
3095 return;
3096
3097 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3098 if (con2fb_map[i] != idx &&
3099 con2fb_map[i] != -1) {
3100 new_idx = con2fb_map[i];
3101 break;
3102 }
3103 }
3104
3105 if (new_idx != -1) {
3106 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3107 if (con2fb_map[i] == idx)
3108 set_con2fb_map(i, new_idx, 0);
3109 }
3110 } else {
3111 struct fb_info *info = registered_fb[idx];
3112
3113
3114
3115
3116
3117
3118
3119 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3120 if (con2fb_map[i] == idx) {
3121 con2fb_map[i] = -1;
3122 if (!search_fb_in_map(idx)) {
3123 ret = con2fb_release_oldinfo(vc_cons[i].d,
3124 info, NULL, i,
3125 idx, 0);
3126 if (ret) {
3127 con2fb_map[i] = idx;
3128 return;
3129 }
3130 }
3131 }
3132 }
3133 fbcon_unbind();
3134 }
3135 }
3136
3137
3138 void fbcon_fb_unregistered(struct fb_info *info)
3139 {
3140 int i, idx;
3141
3142 WARN_CONSOLE_UNLOCKED();
3143
3144 if (deferred_takeover)
3145 return;
3146
3147 idx = info->node;
3148 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3149 if (con2fb_map[i] == idx)
3150 con2fb_map[i] = -1;
3151 }
3152
3153 if (idx == info_idx) {
3154 info_idx = -1;
3155
3156 for_each_registered_fb(i) {
3157 info_idx = i;
3158 break;
3159 }
3160 }
3161
3162 if (info_idx != -1) {
3163 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3164 if (con2fb_map[i] == -1)
3165 con2fb_map[i] = info_idx;
3166 }
3167 }
3168
3169 if (primary_device == idx)
3170 primary_device = -1;
3171
3172 if (!num_registered_fb)
3173 do_unregister_con_driver(&fb_con);
3174 }
3175
3176 void fbcon_remap_all(struct fb_info *info)
3177 {
3178 int i, idx = info->node;
3179
3180 console_lock();
3181 if (deferred_takeover) {
3182 for (i = first_fb_vc; i <= last_fb_vc; i++)
3183 con2fb_map_boot[i] = idx;
3184 fbcon_map_override();
3185 console_unlock();
3186 return;
3187 }
3188
3189 for (i = first_fb_vc; i <= last_fb_vc; i++)
3190 set_con2fb_map(i, idx, 0);
3191
3192 if (con_is_bound(&fb_con)) {
3193 printk(KERN_INFO "fbcon: Remapping primary device, "
3194 "fb%i, to tty %i-%i\n", idx,
3195 first_fb_vc + 1, last_fb_vc + 1);
3196 info_idx = idx;
3197 }
3198 console_unlock();
3199 }
3200
3201 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
3202 static void fbcon_select_primary(struct fb_info *info)
3203 {
3204 if (!map_override && primary_device == -1 &&
3205 fb_is_primary_device(info)) {
3206 int i;
3207
3208 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
3209 info->fix.id, info->node);
3210 primary_device = info->node;
3211
3212 for (i = first_fb_vc; i <= last_fb_vc; i++)
3213 con2fb_map_boot[i] = primary_device;
3214
3215 if (con_is_bound(&fb_con)) {
3216 printk(KERN_INFO "fbcon: Remapping primary device, "
3217 "fb%i, to tty %i-%i\n", info->node,
3218 first_fb_vc + 1, last_fb_vc + 1);
3219 info_idx = primary_device;
3220 }
3221 }
3222
3223 }
3224 #else
3225 static inline void fbcon_select_primary(struct fb_info *info)
3226 {
3227 return;
3228 }
3229 #endif
3230
3231
3232 int fbcon_fb_registered(struct fb_info *info)
3233 {
3234 int ret = 0, i, idx;
3235
3236 WARN_CONSOLE_UNLOCKED();
3237
3238 idx = info->node;
3239 fbcon_select_primary(info);
3240
3241 if (deferred_takeover) {
3242 pr_info("fbcon: Deferring console take-over\n");
3243 return 0;
3244 }
3245
3246 if (info_idx == -1) {
3247 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3248 if (con2fb_map_boot[i] == idx) {
3249 info_idx = idx;
3250 break;
3251 }
3252 }
3253
3254 if (info_idx != -1)
3255 ret = do_fbcon_takeover(1);
3256 } else {
3257 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3258 if (con2fb_map_boot[i] == idx)
3259 set_con2fb_map(i, idx, 0);
3260 }
3261 }
3262
3263 return ret;
3264 }
3265
3266 void fbcon_fb_blanked(struct fb_info *info, int blank)
3267 {
3268 struct fbcon_ops *ops = info->fbcon_par;
3269 struct vc_data *vc;
3270
3271 if (!ops || ops->currcon < 0)
3272 return;
3273
3274 vc = vc_cons[ops->currcon].d;
3275 if (vc->vc_mode != KD_TEXT ||
3276 registered_fb[con2fb_map[ops->currcon]] != info)
3277 return;
3278
3279 if (con_is_visible(vc)) {
3280 if (blank)
3281 do_blank_screen(0);
3282 else
3283 do_unblank_screen(0);
3284 }
3285 ops->blank_state = blank;
3286 }
3287
3288 void fbcon_new_modelist(struct fb_info *info)
3289 {
3290 int i;
3291 struct vc_data *vc;
3292 struct fb_var_screeninfo var;
3293 const struct fb_videomode *mode;
3294
3295 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3296 if (registered_fb[con2fb_map[i]] != info)
3297 continue;
3298 if (!fb_display[i].mode)
3299 continue;
3300 vc = vc_cons[i].d;
3301 display_to_var(&var, &fb_display[i]);
3302 mode = fb_find_nearest_mode(fb_display[i].mode,
3303 &info->modelist);
3304 fb_videomode_to_var(&var, mode);
3305 fbcon_set_disp(info, &var, vc->vc_num);
3306 }
3307 }
3308
3309 void fbcon_get_requirement(struct fb_info *info,
3310 struct fb_blit_caps *caps)
3311 {
3312 struct vc_data *vc;
3313 struct fbcon_display *p;
3314
3315 if (caps->flags) {
3316 int i, charcnt;
3317
3318 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3319 vc = vc_cons[i].d;
3320 if (vc && vc->vc_mode == KD_TEXT &&
3321 info->node == con2fb_map[i]) {
3322 p = &fb_display[i];
3323 caps->x |= 1 << (vc->vc_font.width - 1);
3324 caps->y |= 1 << (vc->vc_font.height - 1);
3325 charcnt = (p->userfont) ?
3326 FNTCHARCNT(p->fontdata) : 256;
3327 if (caps->len < charcnt)
3328 caps->len = charcnt;
3329 }
3330 }
3331 } else {
3332 vc = vc_cons[fg_console].d;
3333
3334 if (vc && vc->vc_mode == KD_TEXT &&
3335 info->node == con2fb_map[fg_console]) {
3336 p = &fb_display[fg_console];
3337 caps->x = 1 << (vc->vc_font.width - 1);
3338 caps->y = 1 << (vc->vc_font.height - 1);
3339 caps->len = (p->userfont) ?
3340 FNTCHARCNT(p->fontdata) : 256;
3341 }
3342 }
3343 }
3344
3345 int fbcon_set_con2fb_map_ioctl(void __user *argp)
3346 {
3347 struct fb_con2fbmap con2fb;
3348 int ret;
3349
3350 if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
3351 return -EFAULT;
3352 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
3353 return -EINVAL;
3354 if (con2fb.framebuffer >= FB_MAX)
3355 return -EINVAL;
3356 if (!registered_fb[con2fb.framebuffer])
3357 request_module("fb%d", con2fb.framebuffer);
3358 if (!registered_fb[con2fb.framebuffer]) {
3359 return -EINVAL;
3360 }
3361
3362 console_lock();
3363 ret = set_con2fb_map(con2fb.console - 1,
3364 con2fb.framebuffer, 1);
3365 console_unlock();
3366
3367 return ret;
3368 }
3369
3370 int fbcon_get_con2fb_map_ioctl(void __user *argp)
3371 {
3372 struct fb_con2fbmap con2fb;
3373
3374 if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
3375 return -EFAULT;
3376 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
3377 return -EINVAL;
3378
3379 console_lock();
3380 con2fb.framebuffer = con2fb_map[con2fb.console - 1];
3381 console_unlock();
3382
3383 return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0;
3384 }
3385
3386
3387
3388
3389
3390 static const struct consw fb_con = {
3391 .owner = THIS_MODULE,
3392 .con_startup = fbcon_startup,
3393 .con_init = fbcon_init,
3394 .con_deinit = fbcon_deinit,
3395 .con_clear = fbcon_clear,
3396 .con_putc = fbcon_putc,
3397 .con_putcs = fbcon_putcs,
3398 .con_cursor = fbcon_cursor,
3399 .con_scroll = fbcon_scroll,
3400 .con_switch = fbcon_switch,
3401 .con_blank = fbcon_blank,
3402 .con_font_set = fbcon_set_font,
3403 .con_font_get = fbcon_get_font,
3404 .con_font_default = fbcon_set_def_font,
3405 .con_font_copy = fbcon_copy_font,
3406 .con_set_palette = fbcon_set_palette,
3407 .con_scrolldelta = fbcon_scrolldelta,
3408 .con_set_origin = fbcon_set_origin,
3409 .con_invert_region = fbcon_invert_region,
3410 .con_screen_pos = fbcon_screen_pos,
3411 .con_getxy = fbcon_getxy,
3412 .con_resize = fbcon_resize,
3413 .con_debug_enter = fbcon_debug_enter,
3414 .con_debug_leave = fbcon_debug_leave,
3415 };
3416
3417 static ssize_t store_rotate(struct device *device,
3418 struct device_attribute *attr, const char *buf,
3419 size_t count)
3420 {
3421 struct fb_info *info;
3422 int rotate, idx;
3423 char **last = NULL;
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(info, rotate);
3434 err:
3435 console_unlock();
3436 return count;
3437 }
3438
3439 static ssize_t store_rotate_all(struct device *device,
3440 struct device_attribute *attr,const char *buf,
3441 size_t count)
3442 {
3443 struct fb_info *info;
3444 int rotate, idx;
3445 char **last = NULL;
3446
3447 console_lock();
3448 idx = con2fb_map[fg_console];
3449
3450 if (idx == -1 || registered_fb[idx] == NULL)
3451 goto err;
3452
3453 info = registered_fb[idx];
3454 rotate = simple_strtoul(buf, last, 0);
3455 fbcon_rotate_all(info, rotate);
3456 err:
3457 console_unlock();
3458 return count;
3459 }
3460
3461 static ssize_t show_rotate(struct device *device,
3462 struct device_attribute *attr,char *buf)
3463 {
3464 struct fb_info *info;
3465 int rotate = 0, idx;
3466
3467 console_lock();
3468 idx = con2fb_map[fg_console];
3469
3470 if (idx == -1 || registered_fb[idx] == NULL)
3471 goto err;
3472
3473 info = registered_fb[idx];
3474 rotate = fbcon_get_rotate(info);
3475 err:
3476 console_unlock();
3477 return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3478 }
3479
3480 static ssize_t show_cursor_blink(struct device *device,
3481 struct device_attribute *attr, char *buf)
3482 {
3483 struct fb_info *info;
3484 struct fbcon_ops *ops;
3485 int idx, blink = -1;
3486
3487 console_lock();
3488 idx = con2fb_map[fg_console];
3489
3490 if (idx == -1 || registered_fb[idx] == NULL)
3491 goto err;
3492
3493 info = registered_fb[idx];
3494 ops = info->fbcon_par;
3495
3496 if (!ops)
3497 goto err;
3498
3499 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3500 err:
3501 console_unlock();
3502 return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3503 }
3504
3505 static ssize_t store_cursor_blink(struct device *device,
3506 struct device_attribute *attr,
3507 const char *buf, size_t count)
3508 {
3509 struct fb_info *info;
3510 int blink, idx;
3511 char **last = NULL;
3512
3513 console_lock();
3514 idx = con2fb_map[fg_console];
3515
3516 if (idx == -1 || registered_fb[idx] == NULL)
3517 goto err;
3518
3519 info = registered_fb[idx];
3520
3521 if (!info->fbcon_par)
3522 goto err;
3523
3524 blink = simple_strtoul(buf, last, 0);
3525
3526 if (blink) {
3527 fbcon_cursor_noblink = 0;
3528 fbcon_add_cursor_timer(info);
3529 } else {
3530 fbcon_cursor_noblink = 1;
3531 fbcon_del_cursor_timer(info);
3532 }
3533
3534 err:
3535 console_unlock();
3536 return count;
3537 }
3538
3539 static struct device_attribute device_attrs[] = {
3540 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3541 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
3542 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3543 store_cursor_blink),
3544 };
3545
3546 static int fbcon_init_device(void)
3547 {
3548 int i, error = 0;
3549
3550 fbcon_has_sysfs = 1;
3551
3552 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
3553 error = device_create_file(fbcon_device, &device_attrs[i]);
3554
3555 if (error)
3556 break;
3557 }
3558
3559 if (error) {
3560 while (--i >= 0)
3561 device_remove_file(fbcon_device, &device_attrs[i]);
3562
3563 fbcon_has_sysfs = 0;
3564 }
3565
3566 return 0;
3567 }
3568
3569 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
3570 static void fbcon_register_existing_fbs(struct work_struct *work)
3571 {
3572 int i;
3573
3574 console_lock();
3575
3576 for_each_registered_fb(i)
3577 fbcon_fb_registered(registered_fb[i]);
3578
3579 console_unlock();
3580 }
3581
3582 static struct notifier_block fbcon_output_nb;
3583 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs);
3584
3585 static int fbcon_output_notifier(struct notifier_block *nb,
3586 unsigned long action, void *data)
3587 {
3588 WARN_CONSOLE_UNLOCKED();
3589
3590 pr_info("fbcon: Taking over console\n");
3591
3592 dummycon_unregister_output_notifier(&fbcon_output_nb);
3593 deferred_takeover = false;
3594 logo_shown = FBCON_LOGO_DONTSHOW;
3595
3596
3597 schedule_work(&fbcon_deferred_takeover_work);
3598
3599 return NOTIFY_OK;
3600 }
3601 #endif
3602
3603 static void fbcon_start(void)
3604 {
3605 WARN_CONSOLE_UNLOCKED();
3606
3607 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
3608 if (conswitchp != &dummy_con)
3609 deferred_takeover = false;
3610
3611 if (deferred_takeover) {
3612 fbcon_output_nb.notifier_call = fbcon_output_notifier;
3613 dummycon_register_output_notifier(&fbcon_output_nb);
3614 return;
3615 }
3616 #endif
3617
3618 if (num_registered_fb) {
3619 int i;
3620
3621 for_each_registered_fb(i) {
3622 info_idx = i;
3623 break;
3624 }
3625
3626 do_fbcon_takeover(0);
3627 }
3628 }
3629
3630 static void fbcon_exit(void)
3631 {
3632 struct fb_info *info;
3633 int i, j, mapped;
3634
3635 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
3636 if (deferred_takeover) {
3637 dummycon_unregister_output_notifier(&fbcon_output_nb);
3638 deferred_takeover = false;
3639 }
3640 #endif
3641
3642 kvfree((void *)softback_buf);
3643 softback_buf = 0UL;
3644
3645 for_each_registered_fb(i) {
3646 int pending = 0;
3647
3648 mapped = 0;
3649 info = registered_fb[i];
3650
3651 if (info->queue.func)
3652 pending = cancel_work_sync(&info->queue);
3653 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" :
3654 "no"));
3655
3656 for (j = first_fb_vc; j <= last_fb_vc; j++) {
3657 if (con2fb_map[j] == i) {
3658 mapped = 1;
3659 con2fb_map[j] = -1;
3660 }
3661 }
3662
3663 if (mapped) {
3664 if (info->fbops->fb_release)
3665 info->fbops->fb_release(info, 0);
3666 module_put(info->fbops->owner);
3667
3668 if (info->fbcon_par) {
3669 struct fbcon_ops *ops = info->fbcon_par;
3670
3671 fbcon_del_cursor_timer(info);
3672 kfree(ops->cursor_src);
3673 kfree(ops->cursor_state.mask);
3674 kfree(info->fbcon_par);
3675 info->fbcon_par = NULL;
3676 }
3677
3678 if (info->queue.func == fb_flashcursor)
3679 info->queue.func = NULL;
3680 }
3681 }
3682 }
3683
3684 void __init fb_console_init(void)
3685 {
3686 int i;
3687
3688 console_lock();
3689 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
3690 "fbcon");
3691
3692 if (IS_ERR(fbcon_device)) {
3693 printk(KERN_WARNING "Unable to create device "
3694 "for fbcon; errno = %ld\n",
3695 PTR_ERR(fbcon_device));
3696 fbcon_device = NULL;
3697 } else
3698 fbcon_init_device();
3699
3700 for (i = 0; i < MAX_NR_CONSOLES; i++)
3701 con2fb_map[i] = -1;
3702
3703 fbcon_start();
3704 console_unlock();
3705 }
3706
3707 #ifdef MODULE
3708
3709 static void __exit fbcon_deinit_device(void)
3710 {
3711 int i;
3712
3713 if (fbcon_has_sysfs) {
3714 for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
3715 device_remove_file(fbcon_device, &device_attrs[i]);
3716
3717 fbcon_has_sysfs = 0;
3718 }
3719 }
3720
3721 void __exit fb_console_exit(void)
3722 {
3723 console_lock();
3724 fbcon_deinit_device();
3725 device_destroy(fb_class, MKDEV(0, 0));
3726 fbcon_exit();
3727 do_unregister_con_driver(&fb_con);
3728 console_unlock();
3729 }
3730 #endif