Line data Source code
1 : /*
2 : * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver
3 : *
4 : * Copyright (C) 1995 Geert Uytterhoeven
5 : *
6 : *
7 : * This file is based on the original Amiga console driver (amicon.c):
8 : *
9 : * Copyright (C) 1993 Hamish Macdonald
10 : * Greg Harp
11 : * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
12 : *
13 : * with work by William Rucklidge (wjr@cs.cornell.edu)
14 : * Geert Uytterhoeven
15 : * Jes Sorensen (jds@kom.auc.dk)
16 : * Martin Apel
17 : *
18 : * and on the original Atari console driver (atacon.c):
19 : *
20 : * Copyright (C) 1993 Bjoern Brauel
21 : * Roman Hodek
22 : *
23 : * with work by Guenther Kelleter
24 : * Martin Schaller
25 : * Andreas Schwab
26 : *
27 : * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org)
28 : * Smart redraw scrolling, arbitrary font width support, 512char font support
29 : * and software scrollback added by
30 : * Jakub Jelinek (jj@ultra.linux.cz)
31 : *
32 : * Random hacking by Martin Mares <mj@ucw.cz>
33 : *
34 : * 2001 - Documented with DocBook
35 : * - Brad Douglas <brad@neruo.com>
36 : *
37 : * The low level operations for the various display memory organizations are
38 : * now in separate source files.
39 : *
40 : * Currently the following organizations are supported:
41 : *
42 : * o afb Amiga bitplanes
43 : * o cfb{2,4,8,16,24,32} Packed pixels
44 : * o ilbm Amiga interleaved bitplanes
45 : * o iplan2p[248] Atari interleaved bitplanes
46 : * o mfb Monochrome
47 : * o vga VGA characters/attributes
48 : *
49 : * To do:
50 : *
51 : * - Implement 16 plane mode (iplan2p16)
52 : *
53 : *
54 : * This file is subject to the terms and conditions of the GNU General Public
55 : * License. See the file COPYING in the main directory of this archive for
56 : * more details.
57 : */
58 :
59 : #undef FBCONDEBUG
60 :
61 : #include <linux/module.h>
62 : #include <linux/types.h>
63 : #include <linux/fs.h>
64 : #include <linux/kernel.h>
65 : #include <linux/delay.h> /* MSch: for IRQ probe */
66 : #include <linux/console.h>
67 : #include <linux/string.h>
68 : #include <linux/kd.h>
69 : #include <linux/slab.h>
70 : #include <linux/fb.h>
71 : #include <linux/vt_kern.h>
72 : #include <linux/selection.h>
73 : #include <linux/font.h>
74 : #include <linux/smp.h>
75 : #include <linux/init.h>
76 : #include <linux/interrupt.h>
77 : #include <linux/crc32.h> /* For counting font checksums */
78 : #include <asm/fb.h>
79 : #include <asm/irq.h>
80 :
81 : #include "fbcon.h"
82 :
83 : #ifdef FBCONDEBUG
84 : # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
85 : #else
86 : # define DPRINTK(fmt, args...)
87 : #endif
88 :
89 : enum {
90 : FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
91 : FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
92 : FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */
93 : };
94 :
95 : static struct display fb_display[MAX_NR_CONSOLES];
96 :
97 : static signed char con2fb_map[MAX_NR_CONSOLES];
98 : static signed char con2fb_map_boot[MAX_NR_CONSOLES];
99 :
100 : static int logo_lines;
101 : /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
102 : enums. */
103 : static int logo_shown = FBCON_LOGO_CANSHOW;
104 : /* Software scrollback */
105 : static int fbcon_softback_size = 32768;
106 : static unsigned long softback_buf, softback_curr;
107 : static unsigned long softback_in;
108 : static unsigned long softback_top, softback_end;
109 : static int softback_lines;
110 : /* console mappings */
111 : static int first_fb_vc;
112 : static int last_fb_vc = MAX_NR_CONSOLES - 1;
113 : static int fbcon_is_default = 1;
114 : static int fbcon_has_exited;
115 : static int primary_device = -1;
116 : static int fbcon_has_console_bind;
117 :
118 : #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
119 : static int map_override;
120 :
121 : static inline void fbcon_map_override(void)
122 : {
123 : map_override = 1;
124 : }
125 : #else
126 : static inline void fbcon_map_override(void)
127 : {
128 : }
129 : #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */
130 :
131 : /* font data */
132 : static char fontname[40];
133 :
134 : /* current fb_info */
135 : static int info_idx = -1;
136 :
137 : /* console rotation */
138 : static int initial_rotation;
139 : static int fbcon_has_sysfs;
140 :
141 : static const struct consw fb_con;
142 :
143 : #define CM_SOFTBACK (8)
144 :
145 : #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
146 :
147 : static int fbcon_set_origin(struct vc_data *);
148 :
149 : #define CURSOR_DRAW_DELAY (1)
150 :
151 : static int vbl_cursor_cnt;
152 : static int fbcon_cursor_noblink;
153 :
154 : #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
155 :
156 : /*
157 : * Interface used by the world
158 : */
159 :
160 : static const char *fbcon_startup(void);
161 : static void fbcon_init(struct vc_data *vc, int init);
162 : static void fbcon_deinit(struct vc_data *vc);
163 : static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
164 : int width);
165 : static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
166 : static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
167 : int count, int ypos, int xpos);
168 : static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
169 : static void fbcon_cursor(struct vc_data *vc, int mode);
170 : static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
171 : int count);
172 : static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
173 : int height, int width);
174 : static int fbcon_switch(struct vc_data *vc);
175 : static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
176 : static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
177 : static int fbcon_scrolldelta(struct vc_data *vc, int lines);
178 :
179 : /*
180 : * Internal routines
181 : */
182 : static __inline__ void ywrap_up(struct vc_data *vc, int count);
183 : static __inline__ void ywrap_down(struct vc_data *vc, int count);
184 : static __inline__ void ypan_up(struct vc_data *vc, int count);
185 : static __inline__ void ypan_down(struct vc_data *vc, int count);
186 : static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
187 : int dy, int dx, int height, int width, u_int y_break);
188 : static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
189 : int unit);
190 : static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
191 : int line, int count, int dy);
192 : static void fbcon_modechanged(struct fb_info *info);
193 : static void fbcon_set_all_vcs(struct fb_info *info);
194 : static void fbcon_start(void);
195 : static void fbcon_exit(void);
196 : static struct device *fbcon_device;
197 :
198 : #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
199 : static inline void fbcon_set_rotation(struct fb_info *info)
200 : {
201 : struct fbcon_ops *ops = info->fbcon_par;
202 :
203 : if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
204 : ops->p->con_rotate < 4)
205 : ops->rotate = ops->p->con_rotate;
206 : else
207 : ops->rotate = 0;
208 : }
209 :
210 : static void fbcon_rotate(struct fb_info *info, u32 rotate)
211 : {
212 : struct fbcon_ops *ops= info->fbcon_par;
213 : struct fb_info *fb_info;
214 :
215 : if (!ops || ops->currcon == -1)
216 : return;
217 :
218 : fb_info = registered_fb[con2fb_map[ops->currcon]];
219 :
220 : if (info == fb_info) {
221 : struct display *p = &fb_display[ops->currcon];
222 :
223 : if (rotate < 4)
224 : p->con_rotate = rotate;
225 : else
226 : p->con_rotate = 0;
227 :
228 : fbcon_modechanged(info);
229 : }
230 : }
231 :
232 : static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
233 : {
234 : struct fbcon_ops *ops = info->fbcon_par;
235 : struct vc_data *vc;
236 : struct display *p;
237 : int i;
238 :
239 : if (!ops || ops->currcon < 0 || rotate > 3)
240 : return;
241 :
242 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
243 : vc = vc_cons[i].d;
244 : if (!vc || vc->vc_mode != KD_TEXT ||
245 : registered_fb[con2fb_map[i]] != info)
246 : continue;
247 :
248 : p = &fb_display[vc->vc_num];
249 : p->con_rotate = rotate;
250 : }
251 :
252 : fbcon_set_all_vcs(info);
253 : }
254 : #else
255 : static inline void fbcon_set_rotation(struct fb_info *info)
256 : {
257 : struct fbcon_ops *ops = info->fbcon_par;
258 :
259 9 : ops->rotate = FB_ROTATE_UR;
260 : }
261 :
262 : static void fbcon_rotate(struct fb_info *info, u32 rotate)
263 : {
264 : return;
265 : }
266 :
267 : static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
268 : {
269 : return;
270 : }
271 : #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
272 :
273 : static int fbcon_get_rotate(struct fb_info *info)
274 : {
275 : struct fbcon_ops *ops = info->fbcon_par;
276 :
277 0 : return (ops) ? ops->rotate : 0;
278 : }
279 :
280 : static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
281 : {
282 : struct fbcon_ops *ops = info->fbcon_par;
283 :
284 1249 : return (info->state != FBINFO_STATE_RUNNING ||
285 2498 : vc->vc_mode != KD_TEXT || ops->graphics) &&
286 : !vt_force_oops_output(vc);
287 : }
288 :
289 20302 : static int get_color(struct vc_data *vc, struct fb_info *info,
290 : u16 c, int is_fg)
291 : {
292 20302 : int depth = fb_get_color_depth(&info->var, &info->fix);
293 : int color = 0;
294 :
295 20302 : if (console_blanked) {
296 0 : unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
297 :
298 0 : c = vc->vc_video_erase_char & charmask;
299 : }
300 :
301 20302 : if (depth != 1)
302 10151 : color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
303 30453 : : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
304 :
305 20302 : switch (depth) {
306 : case 1:
307 : {
308 : int col = mono_col(info);
309 : /* 0 or 1 */
310 0 : int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
311 0 : int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
312 :
313 0 : if (console_blanked)
314 : fg = bg;
315 :
316 0 : color = (is_fg) ? fg : bg;
317 : break;
318 : }
319 : case 2:
320 : /*
321 : * Scale down 16-colors to 4 colors. Default 4-color palette
322 : * is grayscale. However, simply dividing the values by 4
323 : * will not work, as colors 1, 2 and 3 will be scaled-down
324 : * to zero rendering them invisible. So empirically convert
325 : * colors to a sane 4-level grayscale.
326 : */
327 : switch (color) {
328 : case 0:
329 : color = 0; /* black */
330 : break;
331 : case 1 ... 6:
332 : color = 2; /* white */
333 : break;
334 : case 7 ... 8:
335 : color = 1; /* gray */
336 : break;
337 : default:
338 : color = 3; /* intense white */
339 : break;
340 : }
341 : break;
342 : case 3:
343 : /*
344 : * Last 8 entries of default 16-color palette is a more intense
345 : * version of the first 8 (i.e., same chrominance, different
346 : * luminance).
347 : */
348 0 : color &= 7;
349 : break;
350 : }
351 :
352 :
353 20302 : return color;
354 : }
355 :
356 : static void fbcon_update_softback(struct vc_data *vc)
357 : {
358 3 : int l = fbcon_softback_size / vc->vc_size_row;
359 :
360 3 : if (l > 5)
361 3 : softback_end = softback_buf + l * vc->vc_size_row;
362 : else
363 : /* Smaller scrollback makes no sense, and 0 would screw
364 : the operation totally */
365 0 : softback_top = 0;
366 : }
367 :
368 9272 : static void fb_flashcursor(struct work_struct *work)
369 : {
370 9272 : struct fb_info *info = container_of(work, struct fb_info, queue);
371 9272 : struct fbcon_ops *ops = info->fbcon_par;
372 : struct vc_data *vc = NULL;
373 : int c;
374 : int mode;
375 : int ret;
376 :
377 : /* FIXME: we should sort out the unbind locking instead */
378 : /* instead we just fail to flash the cursor if we can't get
379 : * the lock instead of blocking fbcon deinit */
380 9272 : ret = console_trylock();
381 9272 : if (ret == 0)
382 : return;
383 :
384 9271 : if (ops && ops->currcon != -1)
385 9271 : vc = vc_cons[ops->currcon].d;
386 :
387 18542 : if (!vc || !CON_IS_VISIBLE(vc) ||
388 18542 : registered_fb[con2fb_map[vc->vc_num]] != info ||
389 9271 : vc->vc_deccm != 1) {
390 24 : console_unlock();
391 24 : return;
392 : }
393 :
394 9247 : c = scr_readw((u16 *) vc->vc_pos);
395 18494 : mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
396 9247 : CM_ERASE : CM_DRAW;
397 9247 : ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
398 : get_color(vc, info, c, 0));
399 9247 : console_unlock();
400 : }
401 :
402 9272 : static void cursor_timer_handler(unsigned long dev_addr)
403 : {
404 9272 : struct fb_info *info = (struct fb_info *) dev_addr;
405 9272 : struct fbcon_ops *ops = info->fbcon_par;
406 :
407 9272 : queue_work(system_power_efficient_wq, &info->queue);
408 9272 : mod_timer(&ops->cursor_timer, jiffies + HZ/5);
409 9272 : }
410 :
411 587 : static void fbcon_add_cursor_timer(struct fb_info *info)
412 : {
413 587 : struct fbcon_ops *ops = info->fbcon_par;
414 :
415 1174 : if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
416 588 : !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
417 1 : !fbcon_cursor_noblink) {
418 1 : if (!info->queue.func)
419 2 : INIT_WORK(&info->queue, fb_flashcursor);
420 :
421 1 : init_timer(&ops->cursor_timer);
422 1 : ops->cursor_timer.function = cursor_timer_handler;
423 1 : ops->cursor_timer.expires = jiffies + HZ / 5;
424 1 : ops->cursor_timer.data = (unsigned long ) info;
425 1 : add_timer(&ops->cursor_timer);
426 1 : ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
427 : }
428 587 : }
429 :
430 1 : static void fbcon_del_cursor_timer(struct fb_info *info)
431 : {
432 1 : struct fbcon_ops *ops = info->fbcon_par;
433 :
434 2 : if (info->queue.func == fb_flashcursor &&
435 1 : ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
436 1 : del_timer_sync(&ops->cursor_timer);
437 1 : ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
438 : }
439 1 : }
440 :
441 : #ifndef MODULE
442 0 : static int __init fb_console_setup(char *this_opt)
443 : {
444 : char *options;
445 : int i, j;
446 :
447 0 : if (!this_opt || !*this_opt)
448 : return 1;
449 :
450 0 : while ((options = strsep(&this_opt, ",")) != NULL) {
451 0 : if (!strncmp(options, "font:", 5)) {
452 0 : strlcpy(fontname, options + 5, sizeof(fontname));
453 0 : continue;
454 : }
455 :
456 0 : if (!strncmp(options, "scrollback:", 11)) {
457 0 : options += 11;
458 0 : if (*options) {
459 0 : fbcon_softback_size = simple_strtoul(options, &options, 0);
460 0 : if (*options == 'k' || *options == 'K') {
461 0 : fbcon_softback_size *= 1024;
462 : }
463 : }
464 0 : continue;
465 : }
466 :
467 0 : if (!strncmp(options, "map:", 4)) {
468 0 : options += 4;
469 0 : if (*options) {
470 0 : for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
471 0 : if (!options[j])
472 : j = 0;
473 0 : con2fb_map_boot[i] =
474 0 : (options[j++]-'0') % FB_MAX;
475 : }
476 :
477 : fbcon_map_override();
478 : }
479 0 : continue;
480 : }
481 :
482 0 : if (!strncmp(options, "vc:", 3)) {
483 0 : options += 3;
484 0 : if (*options)
485 0 : first_fb_vc = simple_strtoul(options, &options, 10) - 1;
486 0 : if (first_fb_vc < 0)
487 0 : first_fb_vc = 0;
488 0 : if (*options++ == '-')
489 0 : last_fb_vc = simple_strtoul(options, &options, 10) - 1;
490 0 : fbcon_is_default = 0;
491 0 : continue;
492 : }
493 :
494 0 : if (!strncmp(options, "rotate:", 7)) {
495 0 : options += 7;
496 0 : if (*options)
497 0 : initial_rotation = simple_strtoul(options, &options, 0);
498 0 : if (initial_rotation > 3)
499 0 : initial_rotation = 0;
500 0 : continue;
501 : }
502 : }
503 : return 1;
504 : }
505 :
506 : __setup("fbcon=", fb_console_setup);
507 : #endif
508 :
509 : static int search_fb_in_map(int idx)
510 : {
511 : int i, retval = 0;
512 :
513 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
514 0 : if (con2fb_map[i] == idx)
515 : retval = 1;
516 : }
517 : return retval;
518 : }
519 :
520 : static int search_for_mapped_con(void)
521 : {
522 : int i, retval = 0;
523 :
524 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
525 0 : if (con2fb_map[i] != -1)
526 : retval = 1;
527 : }
528 : return retval;
529 : }
530 :
531 1 : static int do_fbcon_takeover(int show_logo)
532 : {
533 : int err, i;
534 :
535 1 : if (!num_registered_fb)
536 : return -ENODEV;
537 :
538 1 : if (!show_logo)
539 0 : logo_shown = FBCON_LOGO_DONTSHOW;
540 :
541 64 : for (i = first_fb_vc; i <= last_fb_vc; i++)
542 63 : con2fb_map[i] = info_idx;
543 :
544 1 : err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc,
545 : fbcon_is_default);
546 :
547 1 : if (err) {
548 0 : for (i = first_fb_vc; i <= last_fb_vc; i++)
549 0 : con2fb_map[i] = -1;
550 0 : info_idx = -1;
551 : } else {
552 1 : fbcon_has_console_bind = 1;
553 : }
554 :
555 1 : return err;
556 : }
557 :
558 : #ifdef MODULE
559 : static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
560 : int cols, int rows, int new_cols, int new_rows)
561 : {
562 : logo_shown = FBCON_LOGO_DONTSHOW;
563 : }
564 : #else
565 1 : static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
566 : int cols, int rows, int new_cols, int new_rows)
567 : {
568 : /* Need to make room for the logo */
569 1 : struct fbcon_ops *ops = info->fbcon_par;
570 1 : int cnt, erase = vc->vc_video_erase_char, step;
571 : unsigned short *save = NULL, *r, *q;
572 : int logo_height;
573 :
574 1 : if (info->flags & FBINFO_MODULE) {
575 0 : logo_shown = FBCON_LOGO_DONTSHOW;
576 1 : return;
577 : }
578 :
579 : /*
580 : * remove underline attribute from erase character
581 : * if black and white framebuffer.
582 : */
583 1 : if (fb_get_color_depth(&info->var, &info->fix) == 1)
584 0 : erase &= ~0x400;
585 1 : logo_height = fb_prepare_logo(info, ops->rotate);
586 1 : logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);
587 3 : q = (unsigned short *) (vc->vc_origin +
588 2 : vc->vc_size_row * rows);
589 1 : step = logo_lines * cols;
590 1141 : for (r = q - logo_lines * cols; r < q; r++)
591 1140 : if (scr_readw(r) != vc->vc_video_erase_char)
592 : break;
593 1 : if (r != q && new_rows >= rows + logo_lines) {
594 0 : save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
595 0 : if (save) {
596 0 : int i = cols < new_cols ? cols : new_cols;
597 0 : scr_memsetw(save, erase, logo_lines * new_cols * 2);
598 : r = q - step;
599 0 : for (cnt = 0; cnt < logo_lines; cnt++, r += i)
600 0 : scr_memcpyw(save + cnt * new_cols, r, 2 * i);
601 : r = q;
602 : }
603 : }
604 1 : if (r == q) {
605 : /* We can scroll screen down */
606 1 : r = q - step - cols;
607 57 : for (cnt = rows - logo_lines; cnt > 0; cnt--) {
608 56 : scr_memcpyw(r + step, r, vc->vc_size_row);
609 56 : r -= cols;
610 : }
611 1 : if (!save) {
612 : int lines;
613 1 : if (vc->vc_y + logo_lines >= rows)
614 0 : lines = rows - vc->vc_y - 1;
615 : else
616 : lines = logo_lines;
617 1 : vc->vc_y += lines;
618 1 : vc->vc_pos += lines * vc->vc_size_row;
619 : }
620 : }
621 2 : scr_memsetw((unsigned short *) vc->vc_origin,
622 : erase,
623 1 : vc->vc_size_row * logo_lines);
624 :
625 1 : if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
626 1 : fbcon_clear_margins(vc, 0);
627 1 : update_screen(vc);
628 : }
629 :
630 1 : if (save) {
631 0 : q = (unsigned short *) (vc->vc_origin +
632 0 : vc->vc_size_row *
633 : rows);
634 0 : scr_memcpyw(q, save, logo_lines * new_cols * 2);
635 0 : vc->vc_y += logo_lines;
636 0 : vc->vc_pos += logo_lines * vc->vc_size_row;
637 0 : kfree(save);
638 : }
639 :
640 1 : if (logo_lines > vc->vc_bottom) {
641 0 : logo_shown = FBCON_LOGO_CANSHOW;
642 0 : printk(KERN_INFO
643 : "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
644 1 : } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
645 1 : logo_shown = FBCON_LOGO_DRAW;
646 1 : vc->vc_top = logo_lines;
647 : }
648 : }
649 : #endif /* MODULE */
650 :
651 : #ifdef CONFIG_FB_TILEBLITTING
652 : static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
653 : {
654 : struct fbcon_ops *ops = info->fbcon_par;
655 :
656 : ops->p = &fb_display[vc->vc_num];
657 :
658 : if ((info->flags & FBINFO_MISC_TILEBLITTING))
659 : fbcon_set_tileops(vc, info);
660 : else {
661 : fbcon_set_rotation(info);
662 : fbcon_set_bitops(ops);
663 : }
664 : }
665 :
666 : static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
667 : {
668 : int err = 0;
669 :
670 : if (info->flags & FBINFO_MISC_TILEBLITTING &&
671 : info->tileops->fb_get_tilemax(info) < charcount)
672 : err = 1;
673 :
674 : return err;
675 : }
676 : #else
677 9 : static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
678 : {
679 9 : struct fbcon_ops *ops = info->fbcon_par;
680 :
681 9 : info->flags &= ~FBINFO_MISC_TILEBLITTING;
682 9 : ops->p = &fb_display[vc->vc_num];
683 : fbcon_set_rotation(info);
684 9 : fbcon_set_bitops(ops);
685 : }
686 :
687 : static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
688 : {
689 : return 0;
690 : }
691 :
692 : #endif /* CONFIG_MISC_TILEBLITTING */
693 :
694 :
695 0 : static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
696 : int unit, int oldidx)
697 : {
698 : struct fbcon_ops *ops = NULL;
699 : int err = 0;
700 :
701 0 : if (!try_module_get(info->fbops->owner))
702 : err = -ENODEV;
703 :
704 0 : if (!err && info->fbops->fb_open &&
705 0 : info->fbops->fb_open(info, 0))
706 : err = -ENODEV;
707 :
708 0 : if (!err) {
709 : ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
710 0 : if (!ops)
711 : err = -ENOMEM;
712 : }
713 :
714 0 : if (!err) {
715 0 : info->fbcon_par = ops;
716 :
717 0 : if (vc)
718 : set_blitting_type(vc, info);
719 : }
720 :
721 0 : if (err) {
722 0 : con2fb_map[unit] = oldidx;
723 0 : module_put(info->fbops->owner);
724 : }
725 :
726 0 : return err;
727 : }
728 :
729 0 : static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
730 : struct fb_info *newinfo, int unit,
731 : int oldidx, int found)
732 : {
733 0 : struct fbcon_ops *ops = oldinfo->fbcon_par;
734 : int err = 0, ret;
735 :
736 0 : if (oldinfo->fbops->fb_release &&
737 0 : oldinfo->fbops->fb_release(oldinfo, 0)) {
738 0 : con2fb_map[unit] = oldidx;
739 0 : if (!found && newinfo->fbops->fb_release)
740 0 : newinfo->fbops->fb_release(newinfo, 0);
741 0 : if (!found)
742 0 : module_put(newinfo->fbops->owner);
743 : err = -ENODEV;
744 : }
745 :
746 0 : if (!err) {
747 0 : fbcon_del_cursor_timer(oldinfo);
748 0 : kfree(ops->cursor_state.mask);
749 0 : kfree(ops->cursor_data);
750 0 : kfree(ops->cursor_src);
751 0 : kfree(ops->fontbuffer);
752 0 : kfree(oldinfo->fbcon_par);
753 0 : oldinfo->fbcon_par = NULL;
754 0 : module_put(oldinfo->fbops->owner);
755 : /*
756 : If oldinfo and newinfo are driving the same hardware,
757 : the fb_release() method of oldinfo may attempt to
758 : restore the hardware state. This will leave the
759 : newinfo in an undefined state. Thus, a call to
760 : fb_set_par() may be needed for the newinfo.
761 : */
762 0 : if (newinfo && newinfo->fbops->fb_set_par) {
763 0 : ret = newinfo->fbops->fb_set_par(newinfo);
764 :
765 0 : if (ret)
766 0 : printk(KERN_ERR "con2fb_release_oldinfo: "
767 : "detected unhandled fb_set_par error, "
768 : "error code %d\n", ret);
769 : }
770 : }
771 :
772 0 : return err;
773 : }
774 :
775 0 : static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
776 : int unit, int show_logo)
777 : {
778 0 : struct fbcon_ops *ops = info->fbcon_par;
779 : int ret;
780 :
781 0 : ops->currcon = fg_console;
782 :
783 0 : if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) {
784 0 : ret = info->fbops->fb_set_par(info);
785 :
786 0 : if (ret)
787 0 : printk(KERN_ERR "con2fb_init_display: detected "
788 : "unhandled fb_set_par error, "
789 : "error code %d\n", ret);
790 : }
791 :
792 0 : ops->flags |= FBCON_FLAGS_INIT;
793 0 : ops->graphics = 0;
794 0 : fbcon_set_disp(info, &info->var, unit);
795 :
796 0 : if (show_logo) {
797 0 : struct vc_data *fg_vc = vc_cons[fg_console].d;
798 0 : struct fb_info *fg_info =
799 0 : registered_fb[con2fb_map[fg_console]];
800 :
801 0 : fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
802 0 : fg_vc->vc_rows, fg_vc->vc_cols,
803 0 : fg_vc->vc_rows);
804 : }
805 :
806 0 : update_screen(vc_cons[fg_console].d);
807 0 : }
808 :
809 : /**
810 : * set_con2fb_map - map console to frame buffer device
811 : * @unit: virtual console number to map
812 : * @newidx: frame buffer index to map virtual console to
813 : * @user: user request
814 : *
815 : * Maps a virtual console @unit to a frame buffer device
816 : * @newidx.
817 : *
818 : * This should be called with the console lock held.
819 : */
820 0 : static int set_con2fb_map(int unit, int newidx, int user)
821 : {
822 0 : struct vc_data *vc = vc_cons[unit].d;
823 0 : int oldidx = con2fb_map[unit];
824 0 : struct fb_info *info = registered_fb[newidx];
825 : struct fb_info *oldinfo = NULL;
826 : int found, err = 0;
827 :
828 0 : if (oldidx == newidx)
829 : return 0;
830 :
831 0 : if (!info)
832 : return -EINVAL;
833 :
834 0 : if (!search_for_mapped_con() || !con_is_bound(&fb_con)) {
835 0 : info_idx = newidx;
836 0 : return do_fbcon_takeover(0);
837 : }
838 :
839 0 : if (oldidx != -1)
840 0 : oldinfo = registered_fb[oldidx];
841 :
842 : found = search_fb_in_map(newidx);
843 :
844 0 : con2fb_map[unit] = newidx;
845 0 : if (!err && !found)
846 0 : err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
847 :
848 :
849 : /*
850 : * If old fb is not mapped to any of the consoles,
851 : * fbcon should release it.
852 : */
853 0 : if (!err && oldinfo && !search_fb_in_map(oldidx))
854 0 : err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
855 : found);
856 :
857 0 : if (!err) {
858 0 : int show_logo = (fg_console == 0 && !user &&
859 0 : logo_shown != FBCON_LOGO_DONTSHOW);
860 :
861 0 : if (!found)
862 0 : fbcon_add_cursor_timer(info);
863 0 : con2fb_map_boot[unit] = newidx;
864 0 : con2fb_init_display(vc, info, unit, show_logo);
865 : }
866 :
867 0 : if (!search_fb_in_map(info_idx))
868 0 : info_idx = newidx;
869 :
870 0 : return err;
871 : }
872 :
873 : /*
874 : * Low Level Operations
875 : */
876 : /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */
877 6 : static int var_to_display(struct display *disp,
878 : struct fb_var_screeninfo *var,
879 : struct fb_info *info)
880 : {
881 6 : disp->xres_virtual = var->xres_virtual;
882 6 : disp->yres_virtual = var->yres_virtual;
883 6 : disp->bits_per_pixel = var->bits_per_pixel;
884 6 : disp->grayscale = var->grayscale;
885 6 : disp->nonstd = var->nonstd;
886 6 : disp->accel_flags = var->accel_flags;
887 6 : disp->height = var->height;
888 6 : disp->width = var->width;
889 6 : disp->red = var->red;
890 6 : disp->green = var->green;
891 6 : disp->blue = var->blue;
892 6 : disp->transp = var->transp;
893 6 : disp->rotate = var->rotate;
894 6 : disp->mode = fb_match_mode(var, &info->modelist);
895 6 : if (disp->mode == NULL)
896 : /* This should not happen */
897 : return -EINVAL;
898 6 : return 0;
899 : }
900 :
901 2 : static void display_to_var(struct fb_var_screeninfo *var,
902 : struct display *disp)
903 : {
904 2 : fb_videomode_to_var(var, disp->mode);
905 2 : var->xres_virtual = disp->xres_virtual;
906 2 : var->yres_virtual = disp->yres_virtual;
907 2 : var->bits_per_pixel = disp->bits_per_pixel;
908 2 : var->grayscale = disp->grayscale;
909 2 : var->nonstd = disp->nonstd;
910 2 : var->accel_flags = disp->accel_flags;
911 2 : var->height = disp->height;
912 2 : var->width = disp->width;
913 2 : var->red = disp->red;
914 2 : var->green = disp->green;
915 2 : var->blue = disp->blue;
916 2 : var->transp = disp->transp;
917 2 : var->rotate = disp->rotate;
918 2 : }
919 :
920 1 : static const char *fbcon_startup(void)
921 : {
922 : const char *display_desc = "frame buffer device";
923 1 : struct display *p = &fb_display[fg_console];
924 1 : struct vc_data *vc = vc_cons[fg_console].d;
925 : const struct font_desc *font = NULL;
926 : struct module *owner;
927 : struct fb_info *info = NULL;
928 : struct fbcon_ops *ops;
929 : int rows, cols;
930 :
931 : /*
932 : * If num_registered_fb is zero, this is a call for the dummy part.
933 : * The frame buffer devices weren't initialized yet.
934 : */
935 1 : if (!num_registered_fb || info_idx == -1)
936 : return display_desc;
937 : /*
938 : * Instead of blindly using registered_fb[0], we use info_idx, set by
939 : * fb_console_init();
940 : */
941 1 : info = registered_fb[info_idx];
942 1 : if (!info)
943 : return NULL;
944 :
945 1 : owner = info->fbops->owner;
946 1 : if (!try_module_get(owner))
947 : return NULL;
948 1 : if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
949 0 : module_put(owner);
950 0 : return NULL;
951 : }
952 :
953 : ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
954 1 : if (!ops) {
955 0 : module_put(owner);
956 0 : return NULL;
957 : }
958 :
959 1 : ops->currcon = -1;
960 1 : ops->graphics = 1;
961 1 : ops->cur_rotate = -1;
962 1 : info->fbcon_par = ops;
963 1 : p->con_rotate = initial_rotation;
964 : set_blitting_type(vc, info);
965 :
966 1 : if (info->fix.type != FB_TYPE_TEXT) {
967 1 : if (fbcon_softback_size) {
968 1 : if (!softback_buf) {
969 1 : softback_buf =
970 1 : (unsigned long)
971 1 : kmalloc(fbcon_softback_size,
972 : GFP_KERNEL);
973 1 : if (!softback_buf) {
974 0 : fbcon_softback_size = 0;
975 0 : softback_top = 0;
976 : }
977 : }
978 : } else {
979 0 : if (softback_buf) {
980 0 : kfree((void *) softback_buf);
981 0 : softback_buf = 0;
982 0 : softback_top = 0;
983 : }
984 : }
985 1 : if (softback_buf)
986 1 : softback_in = softback_top = softback_curr =
987 : softback_buf;
988 1 : softback_lines = 0;
989 : }
990 :
991 : /* Setup default font */
992 1 : if (!p->fontdata && !vc->vc_font.data) {
993 1 : if (!fontname[0] || !(font = find_font(fontname)))
994 2 : font = get_default_font(info->var.xres,
995 1 : info->var.yres,
996 : info->pixmap.blit_x,
997 : info->pixmap.blit_y);
998 1 : vc->vc_font.width = font->width;
999 1 : vc->vc_font.height = font->height;
1000 1 : vc->vc_font.data = (void *)(p->fontdata = font->data);
1001 1 : vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
1002 : } else {
1003 0 : p->fontdata = vc->vc_font.data;
1004 : }
1005 :
1006 1 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1007 1 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1008 1 : cols /= vc->vc_font.width;
1009 1 : rows /= vc->vc_font.height;
1010 1 : vc_resize(vc, cols, rows);
1011 :
1012 : DPRINTK("mode: %s\n", info->fix.id);
1013 : DPRINTK("visual: %d\n", info->fix.visual);
1014 : DPRINTK("res: %dx%d-%d\n", info->var.xres,
1015 : info->var.yres,
1016 : info->var.bits_per_pixel);
1017 :
1018 1 : fbcon_add_cursor_timer(info);
1019 1 : fbcon_has_exited = 0;
1020 1 : return display_desc;
1021 : }
1022 :
1023 7 : static void fbcon_init(struct vc_data *vc, int init)
1024 : {
1025 6 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1026 : struct fbcon_ops *ops;
1027 6 : struct vc_data **default_mode = vc->vc_display_fg;
1028 6 : struct vc_data *svc = *default_mode;
1029 6 : struct display *t, *p = &fb_display[vc->vc_num];
1030 : int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
1031 : int cap, ret;
1032 :
1033 6 : if (info_idx == -1 || info == NULL)
1034 : return;
1035 :
1036 6 : cap = info->flags;
1037 :
1038 7 : if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1039 1 : (info->fix.type == FB_TYPE_TEXT))
1040 : logo = 0;
1041 :
1042 6 : if (var_to_display(p, &info->var, info))
1043 : return;
1044 :
1045 6 : if (!info->fbcon_par)
1046 0 : con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
1047 :
1048 : /* If we are not the first console on this
1049 : fb, copy the font from that console */
1050 6 : t = &fb_display[fg_console];
1051 6 : if (!p->fontdata) {
1052 5 : if (t->fontdata) {
1053 5 : struct vc_data *fvc = vc_cons[fg_console].d;
1054 :
1055 5 : vc->vc_font.data = (void *)(p->fontdata =
1056 5 : fvc->vc_font.data);
1057 5 : vc->vc_font.width = fvc->vc_font.width;
1058 5 : vc->vc_font.height = fvc->vc_font.height;
1059 5 : p->userfont = t->userfont;
1060 :
1061 5 : if (p->userfont)
1062 0 : REFCOUNT(p->fontdata)++;
1063 : } else {
1064 : const struct font_desc *font = NULL;
1065 :
1066 0 : if (!fontname[0] || !(font = find_font(fontname)))
1067 0 : font = get_default_font(info->var.xres,
1068 0 : info->var.yres,
1069 : info->pixmap.blit_x,
1070 : info->pixmap.blit_y);
1071 0 : vc->vc_font.width = font->width;
1072 0 : vc->vc_font.height = font->height;
1073 0 : vc->vc_font.data = (void *)(p->fontdata = font->data);
1074 0 : vc->vc_font.charcount = 256; /* FIXME Need to
1075 : support more fonts */
1076 : }
1077 : }
1078 :
1079 6 : if (p->userfont)
1080 0 : charcnt = FNTCHARCNT(p->fontdata);
1081 :
1082 6 : vc->vc_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT);
1083 6 : vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1084 6 : vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1085 6 : if (charcnt == 256) {
1086 6 : vc->vc_hi_font_mask = 0;
1087 : } else {
1088 0 : vc->vc_hi_font_mask = 0x100;
1089 0 : if (vc->vc_can_do_color)
1090 0 : vc->vc_complement_mask <<= 1;
1091 : }
1092 :
1093 6 : if (!*svc->vc_uni_pagedir_loc)
1094 1 : con_set_default_unimap(svc);
1095 6 : if (!*vc->vc_uni_pagedir_loc)
1096 5 : con_copy_unimap(vc, svc);
1097 :
1098 6 : ops = info->fbcon_par;
1099 6 : p->con_rotate = initial_rotation;
1100 : set_blitting_type(vc, info);
1101 :
1102 6 : cols = vc->vc_cols;
1103 6 : rows = vc->vc_rows;
1104 6 : new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1105 6 : new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1106 6 : new_cols /= vc->vc_font.width;
1107 6 : new_rows /= vc->vc_font.height;
1108 :
1109 : /*
1110 : * We must always set the mode. The mode of the previous console
1111 : * driver could be in the same resolution but we are using different
1112 : * hardware so we have to initialize the hardware.
1113 : *
1114 : * We need to do it in fbcon_init() to prevent screen corruption.
1115 : */
1116 6 : if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
1117 2 : if (info->fbops->fb_set_par &&
1118 1 : !(ops->flags & FBCON_FLAGS_INIT)) {
1119 1 : ret = info->fbops->fb_set_par(info);
1120 :
1121 1 : if (ret)
1122 0 : printk(KERN_ERR "fbcon_init: detected "
1123 : "unhandled fb_set_par error, "
1124 : "error code %d\n", ret);
1125 : }
1126 :
1127 1 : ops->flags |= FBCON_FLAGS_INIT;
1128 : }
1129 :
1130 6 : ops->graphics = 0;
1131 :
1132 6 : if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1133 : !(cap & FBINFO_HWACCEL_DISABLED))
1134 6 : p->scrollmode = SCROLL_MOVE;
1135 : else /* default to something safe */
1136 0 : p->scrollmode = SCROLL_REDRAW;
1137 :
1138 : /*
1139 : * ++guenther: console.c:vc_allocate() relies on initializing
1140 : * vc_{cols,rows}, but we must not set those if we are only
1141 : * resizing the console.
1142 : */
1143 6 : if (init) {
1144 5 : vc->vc_cols = new_cols;
1145 5 : vc->vc_rows = new_rows;
1146 : } else
1147 1 : vc_resize(vc, new_cols, new_rows);
1148 :
1149 6 : if (logo)
1150 1 : fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1151 :
1152 6 : if (vc == svc && softback_buf)
1153 : fbcon_update_softback(vc);
1154 :
1155 6 : if (ops->rotate_font && ops->rotate_font(info, vc)) {
1156 0 : ops->rotate = FB_ROTATE_UR;
1157 : set_blitting_type(vc, info);
1158 : }
1159 :
1160 6 : ops->p = &fb_display[fg_console];
1161 : }
1162 :
1163 0 : static void fbcon_free_font(struct display *p, bool freefont)
1164 : {
1165 0 : if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
1166 0 : kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1167 0 : p->fontdata = NULL;
1168 0 : p->userfont = 0;
1169 0 : }
1170 :
1171 0 : static void fbcon_deinit(struct vc_data *vc)
1172 : {
1173 0 : struct display *p = &fb_display[vc->vc_num];
1174 0 : struct fb_info *info;
1175 : struct fbcon_ops *ops;
1176 : int idx;
1177 : bool free_font = true;
1178 :
1179 0 : idx = con2fb_map[vc->vc_num];
1180 :
1181 0 : if (idx == -1)
1182 : goto finished;
1183 :
1184 0 : info = registered_fb[idx];
1185 :
1186 0 : if (!info)
1187 : goto finished;
1188 :
1189 0 : if (info->flags & FBINFO_MISC_FIRMWARE)
1190 : free_font = false;
1191 0 : ops = info->fbcon_par;
1192 :
1193 0 : if (!ops)
1194 : goto finished;
1195 :
1196 0 : if (CON_IS_VISIBLE(vc))
1197 0 : fbcon_del_cursor_timer(info);
1198 :
1199 0 : ops->flags &= ~FBCON_FLAGS_INIT;
1200 : finished:
1201 :
1202 0 : fbcon_free_font(p, free_font);
1203 0 : if (free_font)
1204 0 : vc->vc_font.data = NULL;
1205 :
1206 0 : if (!con_is_bound(&fb_con))
1207 0 : fbcon_exit();
1208 :
1209 0 : return;
1210 : }
1211 :
1212 : /* ====================================================================== */
1213 :
1214 : /* fbcon_XXX routines - interface used by the world
1215 : *
1216 : * This system is now divided into two levels because of complications
1217 : * caused by hardware scrolling. Top level functions:
1218 : *
1219 : * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1220 : *
1221 : * handles y values in range [0, scr_height-1] that correspond to real
1222 : * screen positions. y_wrap shift means that first line of bitmap may be
1223 : * anywhere on this display. These functions convert lineoffsets to
1224 : * bitmap offsets and deal with the wrap-around case by splitting blits.
1225 : *
1226 : * fbcon_bmove_physical_8() -- These functions fast implementations
1227 : * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1228 : * fbcon_putc_physical_8() -- (font width != 8) may be added later
1229 : *
1230 : * WARNING:
1231 : *
1232 : * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1233 : * Implies should only really hardware scroll in rows. Only reason for
1234 : * restriction is simplicity & efficiency at the moment.
1235 : */
1236 :
1237 0 : static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1238 : int width)
1239 : {
1240 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1241 0 : struct fbcon_ops *ops = info->fbcon_par;
1242 :
1243 0 : struct display *p = &fb_display[vc->vc_num];
1244 : u_int y_break;
1245 :
1246 0 : if (fbcon_is_inactive(vc, info))
1247 : return;
1248 :
1249 0 : if (!height || !width)
1250 : return;
1251 :
1252 0 : if (sy < vc->vc_top && vc->vc_top == logo_lines) {
1253 0 : vc->vc_top = 0;
1254 : /*
1255 : * If the font dimensions are not an integral of the display
1256 : * dimensions then the ops->clear below won't end up clearing
1257 : * the margins. Call clear_margins here in case the logo
1258 : * bitmap stretched into the margin area.
1259 : */
1260 0 : fbcon_clear_margins(vc, 0);
1261 : }
1262 :
1263 : /* Split blits that cross physical y_wrap boundary */
1264 :
1265 0 : y_break = p->vrows - p->yscroll;
1266 0 : if (sy < y_break && sy + height - 1 >= y_break) {
1267 0 : u_int b = y_break - sy;
1268 0 : ops->clear(vc, info, real_y(p, sy), sx, b, width);
1269 0 : ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1270 : width);
1271 : } else
1272 0 : ops->clear(vc, info, real_y(p, sy), sx, height, width);
1273 : }
1274 :
1275 320 : static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1276 : int count, int ypos, int xpos)
1277 : {
1278 640 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1279 640 : struct display *p = &fb_display[vc->vc_num];
1280 320 : struct fbcon_ops *ops = info->fbcon_par;
1281 :
1282 320 : if (!fbcon_is_inactive(vc, info))
1283 640 : ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1284 : get_color(vc, info, scr_readw(s), 1),
1285 : get_color(vc, info, scr_readw(s), 0));
1286 320 : }
1287 :
1288 0 : static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1289 : {
1290 : unsigned short chr;
1291 :
1292 0 : scr_writew(c, &chr);
1293 0 : fbcon_putcs(vc, &chr, 1, ypos, xpos);
1294 0 : }
1295 :
1296 3 : static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1297 : {
1298 6 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1299 3 : struct fbcon_ops *ops = info->fbcon_par;
1300 :
1301 3 : if (!fbcon_is_inactive(vc, info))
1302 3 : ops->clear_margins(vc, info, bottom_only);
1303 3 : }
1304 :
1305 911 : static void fbcon_cursor(struct vc_data *vc, int mode)
1306 : {
1307 1822 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1308 911 : struct fbcon_ops *ops = info->fbcon_par;
1309 : int y;
1310 911 : int c = scr_readw((u16 *) vc->vc_pos);
1311 :
1312 911 : if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1313 911 : return;
1314 :
1315 584 : if (vc->vc_cursor_type & 0x10)
1316 0 : fbcon_del_cursor_timer(info);
1317 : else
1318 584 : fbcon_add_cursor_timer(info);
1319 :
1320 584 : ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1321 584 : if (mode & CM_SOFTBACK) {
1322 0 : mode &= ~CM_SOFTBACK;
1323 0 : y = softback_lines;
1324 : } else {
1325 584 : if (softback_lines)
1326 : fbcon_set_origin(vc);
1327 : y = 0;
1328 : }
1329 :
1330 584 : ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1331 : get_color(vc, info, c, 0));
1332 584 : vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1333 : }
1334 :
1335 : static int scrollback_phys_max = 0;
1336 : static int scrollback_max = 0;
1337 : static int scrollback_current = 0;
1338 :
1339 0 : static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1340 : int unit)
1341 : {
1342 : struct display *p, *t;
1343 0 : struct vc_data **default_mode, *vc;
1344 : struct vc_data *svc;
1345 0 : struct fbcon_ops *ops = info->fbcon_par;
1346 : int rows, cols, charcnt = 256;
1347 :
1348 0 : p = &fb_display[unit];
1349 :
1350 0 : if (var_to_display(p, var, info))
1351 : return;
1352 :
1353 0 : vc = vc_cons[unit].d;
1354 :
1355 0 : if (!vc)
1356 : return;
1357 :
1358 0 : default_mode = vc->vc_display_fg;
1359 0 : svc = *default_mode;
1360 0 : t = &fb_display[svc->vc_num];
1361 :
1362 0 : if (!vc->vc_font.data) {
1363 0 : vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1364 0 : vc->vc_font.width = (*default_mode)->vc_font.width;
1365 0 : vc->vc_font.height = (*default_mode)->vc_font.height;
1366 0 : p->userfont = t->userfont;
1367 0 : if (p->userfont)
1368 0 : REFCOUNT(p->fontdata)++;
1369 : }
1370 0 : if (p->userfont)
1371 0 : charcnt = FNTCHARCNT(p->fontdata);
1372 :
1373 0 : var->activate = FB_ACTIVATE_NOW;
1374 0 : info->var.activate = var->activate;
1375 0 : var->yoffset = info->var.yoffset;
1376 0 : var->xoffset = info->var.xoffset;
1377 0 : fb_set_var(info, var);
1378 0 : ops->var = info->var;
1379 0 : vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1380 0 : vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1381 0 : if (charcnt == 256) {
1382 0 : vc->vc_hi_font_mask = 0;
1383 : } else {
1384 0 : vc->vc_hi_font_mask = 0x100;
1385 0 : if (vc->vc_can_do_color)
1386 0 : vc->vc_complement_mask <<= 1;
1387 : }
1388 :
1389 0 : if (!*svc->vc_uni_pagedir_loc)
1390 0 : con_set_default_unimap(svc);
1391 0 : if (!*vc->vc_uni_pagedir_loc)
1392 0 : con_copy_unimap(vc, svc);
1393 :
1394 0 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1395 0 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1396 0 : cols /= vc->vc_font.width;
1397 0 : rows /= vc->vc_font.height;
1398 0 : vc_resize(vc, cols, rows);
1399 :
1400 0 : if (CON_IS_VISIBLE(vc)) {
1401 0 : update_screen(vc);
1402 0 : if (softback_buf)
1403 : fbcon_update_softback(vc);
1404 : }
1405 : }
1406 :
1407 : static __inline__ void ywrap_up(struct vc_data *vc, int count)
1408 : {
1409 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1410 0 : struct fbcon_ops *ops = info->fbcon_par;
1411 0 : struct display *p = &fb_display[vc->vc_num];
1412 :
1413 0 : p->yscroll += count;
1414 0 : if (p->yscroll >= p->vrows) /* Deal with wrap */
1415 0 : p->yscroll -= p->vrows;
1416 0 : ops->var.xoffset = 0;
1417 0 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1418 0 : ops->var.vmode |= FB_VMODE_YWRAP;
1419 0 : ops->update_start(info);
1420 0 : scrollback_max += count;
1421 0 : if (scrollback_max > scrollback_phys_max)
1422 0 : scrollback_max = scrollback_phys_max;
1423 0 : scrollback_current = 0;
1424 : }
1425 :
1426 : static __inline__ void ywrap_down(struct vc_data *vc, int count)
1427 : {
1428 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1429 0 : struct fbcon_ops *ops = info->fbcon_par;
1430 0 : struct display *p = &fb_display[vc->vc_num];
1431 :
1432 0 : p->yscroll -= count;
1433 0 : if (p->yscroll < 0) /* Deal with wrap */
1434 0 : p->yscroll += p->vrows;
1435 0 : ops->var.xoffset = 0;
1436 0 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1437 0 : ops->var.vmode |= FB_VMODE_YWRAP;
1438 0 : ops->update_start(info);
1439 0 : scrollback_max -= count;
1440 0 : if (scrollback_max < 0)
1441 0 : scrollback_max = 0;
1442 0 : scrollback_current = 0;
1443 : }
1444 :
1445 : static __inline__ void ypan_up(struct vc_data *vc, int count)
1446 : {
1447 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1448 0 : struct display *p = &fb_display[vc->vc_num];
1449 0 : struct fbcon_ops *ops = info->fbcon_par;
1450 :
1451 0 : p->yscroll += count;
1452 0 : if (p->yscroll > p->vrows - vc->vc_rows) {
1453 0 : ops->bmove(vc, info, p->vrows - vc->vc_rows,
1454 0 : 0, 0, 0, vc->vc_rows, vc->vc_cols);
1455 0 : p->yscroll -= p->vrows - vc->vc_rows;
1456 : }
1457 :
1458 0 : ops->var.xoffset = 0;
1459 0 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1460 0 : ops->var.vmode &= ~FB_VMODE_YWRAP;
1461 0 : ops->update_start(info);
1462 0 : fbcon_clear_margins(vc, 1);
1463 0 : scrollback_max += count;
1464 0 : if (scrollback_max > scrollback_phys_max)
1465 0 : scrollback_max = scrollback_phys_max;
1466 0 : scrollback_current = 0;
1467 : }
1468 :
1469 : static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1470 : {
1471 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1472 0 : struct fbcon_ops *ops = info->fbcon_par;
1473 0 : struct display *p = &fb_display[vc->vc_num];
1474 :
1475 0 : p->yscroll += count;
1476 :
1477 0 : if (p->yscroll > p->vrows - vc->vc_rows) {
1478 0 : p->yscroll -= p->vrows - vc->vc_rows;
1479 0 : fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1480 : }
1481 :
1482 0 : ops->var.xoffset = 0;
1483 0 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1484 0 : ops->var.vmode &= ~FB_VMODE_YWRAP;
1485 0 : ops->update_start(info);
1486 0 : fbcon_clear_margins(vc, 1);
1487 0 : scrollback_max += count;
1488 0 : if (scrollback_max > scrollback_phys_max)
1489 0 : scrollback_max = scrollback_phys_max;
1490 0 : scrollback_current = 0;
1491 : }
1492 :
1493 : static __inline__ void ypan_down(struct vc_data *vc, int count)
1494 : {
1495 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1496 0 : struct display *p = &fb_display[vc->vc_num];
1497 0 : struct fbcon_ops *ops = info->fbcon_par;
1498 :
1499 0 : p->yscroll -= count;
1500 0 : if (p->yscroll < 0) {
1501 0 : ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1502 0 : 0, vc->vc_rows, vc->vc_cols);
1503 0 : p->yscroll += p->vrows - vc->vc_rows;
1504 : }
1505 :
1506 0 : ops->var.xoffset = 0;
1507 0 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1508 0 : ops->var.vmode &= ~FB_VMODE_YWRAP;
1509 0 : ops->update_start(info);
1510 0 : fbcon_clear_margins(vc, 1);
1511 0 : scrollback_max -= count;
1512 0 : if (scrollback_max < 0)
1513 0 : scrollback_max = 0;
1514 0 : scrollback_current = 0;
1515 : }
1516 :
1517 : static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1518 : {
1519 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1520 0 : struct fbcon_ops *ops = info->fbcon_par;
1521 0 : struct display *p = &fb_display[vc->vc_num];
1522 :
1523 0 : p->yscroll -= count;
1524 :
1525 0 : if (p->yscroll < 0) {
1526 0 : p->yscroll += p->vrows - vc->vc_rows;
1527 0 : fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1528 : }
1529 :
1530 0 : ops->var.xoffset = 0;
1531 0 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1532 0 : ops->var.vmode &= ~FB_VMODE_YWRAP;
1533 0 : ops->update_start(info);
1534 0 : fbcon_clear_margins(vc, 1);
1535 0 : scrollback_max -= count;
1536 0 : if (scrollback_max < 0)
1537 0 : scrollback_max = 0;
1538 0 : scrollback_current = 0;
1539 : }
1540 :
1541 0 : static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1542 : long delta)
1543 : {
1544 0 : int count = vc->vc_rows;
1545 : unsigned short *d, *s;
1546 : unsigned long n;
1547 : int line = 0;
1548 :
1549 0 : d = (u16 *) softback_curr;
1550 0 : if (d == (u16 *) softback_in)
1551 0 : d = (u16 *) vc->vc_origin;
1552 0 : n = softback_curr + delta * vc->vc_size_row;
1553 0 : softback_lines -= delta;
1554 0 : if (delta < 0) {
1555 0 : if (softback_curr < softback_top && n < softback_buf) {
1556 0 : n += softback_end - softback_buf;
1557 0 : if (n < softback_top) {
1558 0 : softback_lines -=
1559 0 : (softback_top - n) / vc->vc_size_row;
1560 : n = softback_top;
1561 : }
1562 0 : } else if (softback_curr >= softback_top
1563 0 : && n < softback_top) {
1564 0 : softback_lines -=
1565 0 : (softback_top - n) / vc->vc_size_row;
1566 : n = softback_top;
1567 : }
1568 : } else {
1569 0 : if (softback_curr > softback_in && n >= softback_end) {
1570 0 : n += softback_buf - softback_end;
1571 0 : if (n > softback_in) {
1572 : n = softback_in;
1573 0 : softback_lines = 0;
1574 : }
1575 0 : } else if (softback_curr <= softback_in && n > softback_in) {
1576 : n = softback_in;
1577 0 : softback_lines = 0;
1578 : }
1579 : }
1580 0 : if (n == softback_curr)
1581 0 : return;
1582 0 : softback_curr = n;
1583 0 : s = (u16 *) softback_curr;
1584 0 : if (s == (u16 *) softback_in)
1585 0 : s = (u16 *) vc->vc_origin;
1586 0 : while (count--) {
1587 : unsigned short *start;
1588 : unsigned short *le;
1589 : unsigned short c;
1590 : int x = 0;
1591 : unsigned short attr = 1;
1592 :
1593 : start = s;
1594 0 : le = advance_row(s, 1);
1595 : do {
1596 0 : c = scr_readw(s);
1597 0 : if (attr != (c & 0xff00)) {
1598 : attr = c & 0xff00;
1599 0 : if (s > start) {
1600 0 : fbcon_putcs(vc, start, s - start,
1601 : line, x);
1602 0 : x += s - start;
1603 : start = s;
1604 : }
1605 : }
1606 0 : if (c == scr_readw(d)) {
1607 0 : if (s > start) {
1608 0 : fbcon_putcs(vc, start, s - start,
1609 : line, x);
1610 0 : x += s - start + 1;
1611 0 : start = s + 1;
1612 : } else {
1613 0 : x++;
1614 0 : start++;
1615 : }
1616 : }
1617 0 : s++;
1618 0 : d++;
1619 0 : } while (s < le);
1620 0 : if (s > start)
1621 0 : fbcon_putcs(vc, start, s - start, line, x);
1622 0 : line++;
1623 0 : if (d == (u16 *) softback_end)
1624 0 : d = (u16 *) softback_buf;
1625 0 : if (d == (u16 *) softback_in)
1626 0 : d = (u16 *) vc->vc_origin;
1627 0 : if (s == (u16 *) softback_end)
1628 0 : s = (u16 *) softback_buf;
1629 0 : if (s == (u16 *) softback_in)
1630 0 : s = (u16 *) vc->vc_origin;
1631 : }
1632 : }
1633 :
1634 0 : static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1635 : int line, int count, int dy)
1636 : {
1637 0 : unsigned short *s = (unsigned short *)
1638 0 : (vc->vc_origin + vc->vc_size_row * line);
1639 :
1640 0 : while (count--) {
1641 : unsigned short *start = s;
1642 0 : unsigned short *le = advance_row(s, 1);
1643 : unsigned short c;
1644 : int x = 0;
1645 : unsigned short attr = 1;
1646 :
1647 : do {
1648 0 : c = scr_readw(s);
1649 0 : if (attr != (c & 0xff00)) {
1650 : attr = c & 0xff00;
1651 0 : if (s > start) {
1652 0 : fbcon_putcs(vc, start, s - start,
1653 : dy, x);
1654 0 : x += s - start;
1655 : start = s;
1656 : }
1657 : }
1658 0 : console_conditional_schedule();
1659 0 : s++;
1660 0 : } while (s < le);
1661 0 : if (s > start)
1662 0 : fbcon_putcs(vc, start, s - start, dy, x);
1663 0 : console_conditional_schedule();
1664 0 : dy++;
1665 : }
1666 0 : }
1667 :
1668 0 : static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1669 : struct display *p, int line, int count, int ycount)
1670 : {
1671 0 : int offset = ycount * vc->vc_cols;
1672 0 : unsigned short *d = (unsigned short *)
1673 0 : (vc->vc_origin + vc->vc_size_row * line);
1674 0 : unsigned short *s = d + offset;
1675 0 : struct fbcon_ops *ops = info->fbcon_par;
1676 :
1677 0 : while (count--) {
1678 : unsigned short *start = s;
1679 0 : unsigned short *le = advance_row(s, 1);
1680 : unsigned short c;
1681 : int x = 0;
1682 :
1683 : do {
1684 0 : c = scr_readw(s);
1685 :
1686 0 : if (c == scr_readw(d)) {
1687 0 : if (s > start) {
1688 0 : ops->bmove(vc, info, line + ycount, x,
1689 0 : line, x, 1, s-start);
1690 0 : x += s - start + 1;
1691 0 : start = s + 1;
1692 : } else {
1693 0 : x++;
1694 0 : start++;
1695 : }
1696 : }
1697 :
1698 0 : scr_writew(c, d);
1699 0 : console_conditional_schedule();
1700 0 : s++;
1701 0 : d++;
1702 0 : } while (s < le);
1703 0 : if (s > start)
1704 0 : ops->bmove(vc, info, line + ycount, x, line, x, 1,
1705 0 : s-start);
1706 0 : console_conditional_schedule();
1707 0 : if (ycount > 0)
1708 0 : line++;
1709 : else {
1710 0 : line--;
1711 : /* NOTE: We subtract two lines from these pointers */
1712 0 : s -= vc->vc_size_row;
1713 0 : d -= vc->vc_size_row;
1714 : }
1715 : }
1716 0 : }
1717 :
1718 0 : static void fbcon_redraw(struct vc_data *vc, struct display *p,
1719 : int line, int count, int offset)
1720 : {
1721 0 : unsigned short *d = (unsigned short *)
1722 0 : (vc->vc_origin + vc->vc_size_row * line);
1723 0 : unsigned short *s = d + offset;
1724 :
1725 0 : while (count--) {
1726 : unsigned short *start = s;
1727 0 : unsigned short *le = advance_row(s, 1);
1728 : unsigned short c;
1729 : int x = 0;
1730 : unsigned short attr = 1;
1731 :
1732 : do {
1733 0 : c = scr_readw(s);
1734 0 : if (attr != (c & 0xff00)) {
1735 : attr = c & 0xff00;
1736 0 : if (s > start) {
1737 0 : fbcon_putcs(vc, start, s - start,
1738 : line, x);
1739 0 : x += s - start;
1740 : start = s;
1741 : }
1742 : }
1743 0 : if (c == scr_readw(d)) {
1744 0 : if (s > start) {
1745 0 : fbcon_putcs(vc, start, s - start,
1746 : line, x);
1747 0 : x += s - start + 1;
1748 0 : start = s + 1;
1749 : } else {
1750 0 : x++;
1751 0 : start++;
1752 : }
1753 : }
1754 0 : scr_writew(c, d);
1755 0 : console_conditional_schedule();
1756 0 : s++;
1757 0 : d++;
1758 0 : } while (s < le);
1759 0 : if (s > start)
1760 0 : fbcon_putcs(vc, start, s - start, line, x);
1761 0 : console_conditional_schedule();
1762 0 : if (offset > 0)
1763 0 : line++;
1764 : else {
1765 0 : line--;
1766 : /* NOTE: We subtract two lines from these pointers */
1767 0 : s -= vc->vc_size_row;
1768 0 : d -= vc->vc_size_row;
1769 : }
1770 : }
1771 0 : }
1772 :
1773 : static inline void fbcon_softback_note(struct vc_data *vc, int t,
1774 : int count)
1775 : {
1776 : unsigned short *p;
1777 :
1778 0 : if (vc->vc_num != fg_console)
1779 : return;
1780 0 : p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1781 :
1782 0 : while (count) {
1783 0 : scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1784 0 : count--;
1785 0 : p = advance_row(p, 1);
1786 0 : softback_in += vc->vc_size_row;
1787 0 : if (softback_in == softback_end)
1788 0 : softback_in = softback_buf;
1789 0 : if (softback_in == softback_top) {
1790 0 : softback_top += vc->vc_size_row;
1791 0 : if (softback_top == softback_end)
1792 0 : softback_top = softback_buf;
1793 : }
1794 : }
1795 0 : softback_curr = softback_in;
1796 : }
1797 :
1798 0 : static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1799 : int count)
1800 : {
1801 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1802 0 : struct display *p = &fb_display[vc->vc_num];
1803 0 : int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1804 :
1805 0 : if (fbcon_is_inactive(vc, info))
1806 : return -EINVAL;
1807 :
1808 0 : fbcon_cursor(vc, CM_ERASE);
1809 :
1810 : /*
1811 : * ++Geert: Only use ywrap/ypan if the console is in text mode
1812 : * ++Andrew: Only use ypan on hardware text mode when scrolling the
1813 : * whole screen (prevents flicker).
1814 : */
1815 :
1816 0 : switch (dir) {
1817 : case SM_UP:
1818 0 : if (count > vc->vc_rows) /* Maximum realistic size */
1819 0 : count = vc->vc_rows;
1820 0 : if (softback_top)
1821 : fbcon_softback_note(vc, t, count);
1822 0 : if (logo_shown >= 0)
1823 : goto redraw_up;
1824 0 : switch (p->scrollmode) {
1825 : case SCROLL_MOVE:
1826 0 : fbcon_redraw_blit(vc, info, p, t, b - t - count,
1827 : count);
1828 0 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1829 0 : scr_memsetw((unsigned short *) (vc->vc_origin +
1830 0 : vc->vc_size_row *
1831 : (b - count)),
1832 : vc->vc_video_erase_char,
1833 : vc->vc_size_row * count);
1834 : return 1;
1835 : break;
1836 :
1837 : case SCROLL_WRAP_MOVE:
1838 0 : if (b - t - count > 3 * vc->vc_rows >> 2) {
1839 0 : if (t > 0)
1840 0 : fbcon_bmove(vc, 0, 0, count, 0, t,
1841 0 : vc->vc_cols);
1842 : ywrap_up(vc, count);
1843 0 : if (vc->vc_rows - b > 0)
1844 0 : fbcon_bmove(vc, b - count, 0, b, 0,
1845 0 : vc->vc_rows - b,
1846 0 : vc->vc_cols);
1847 0 : } else if (info->flags & FBINFO_READS_FAST)
1848 0 : fbcon_bmove(vc, t + count, 0, t, 0,
1849 0 : b - t - count, vc->vc_cols);
1850 : else
1851 : goto redraw_up;
1852 0 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1853 0 : break;
1854 :
1855 : case SCROLL_PAN_REDRAW:
1856 0 : if ((p->yscroll + count <=
1857 0 : 2 * (p->vrows - vc->vc_rows))
1858 0 : && ((!scroll_partial && (b - t == vc->vc_rows))
1859 0 : || (scroll_partial
1860 0 : && (b - t - count >
1861 0 : 3 * vc->vc_rows >> 2)))) {
1862 0 : if (t > 0)
1863 0 : fbcon_redraw_move(vc, p, 0, t, count);
1864 : ypan_up_redraw(vc, t, count);
1865 0 : if (vc->vc_rows - b > 0)
1866 0 : fbcon_redraw_move(vc, p, b,
1867 0 : vc->vc_rows - b, b);
1868 : } else
1869 0 : fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1870 0 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1871 0 : break;
1872 :
1873 : case SCROLL_PAN_MOVE:
1874 0 : if ((p->yscroll + count <=
1875 0 : 2 * (p->vrows - vc->vc_rows))
1876 0 : && ((!scroll_partial && (b - t == vc->vc_rows))
1877 0 : || (scroll_partial
1878 0 : && (b - t - count >
1879 0 : 3 * vc->vc_rows >> 2)))) {
1880 0 : if (t > 0)
1881 0 : fbcon_bmove(vc, 0, 0, count, 0, t,
1882 0 : vc->vc_cols);
1883 : ypan_up(vc, count);
1884 0 : if (vc->vc_rows - b > 0)
1885 0 : fbcon_bmove(vc, b - count, 0, b, 0,
1886 0 : vc->vc_rows - b,
1887 0 : vc->vc_cols);
1888 0 : } else if (info->flags & FBINFO_READS_FAST)
1889 0 : fbcon_bmove(vc, t + count, 0, t, 0,
1890 0 : b - t - count, vc->vc_cols);
1891 : else
1892 : goto redraw_up;
1893 0 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1894 0 : break;
1895 :
1896 : case SCROLL_REDRAW:
1897 : redraw_up:
1898 0 : fbcon_redraw(vc, p, t, b - t - count,
1899 0 : count * vc->vc_cols);
1900 0 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1901 0 : scr_memsetw((unsigned short *) (vc->vc_origin +
1902 0 : vc->vc_size_row *
1903 : (b - count)),
1904 : vc->vc_video_erase_char,
1905 : vc->vc_size_row * count);
1906 : return 1;
1907 : }
1908 : break;
1909 :
1910 : case SM_DOWN:
1911 0 : if (count > vc->vc_rows) /* Maximum realistic size */
1912 0 : count = vc->vc_rows;
1913 0 : if (logo_shown >= 0)
1914 : goto redraw_down;
1915 0 : switch (p->scrollmode) {
1916 : case SCROLL_MOVE:
1917 0 : fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1918 : -count);
1919 0 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1920 0 : scr_memsetw((unsigned short *) (vc->vc_origin +
1921 0 : vc->vc_size_row *
1922 : t),
1923 : vc->vc_video_erase_char,
1924 : vc->vc_size_row * count);
1925 : return 1;
1926 : break;
1927 :
1928 : case SCROLL_WRAP_MOVE:
1929 0 : if (b - t - count > 3 * vc->vc_rows >> 2) {
1930 0 : if (vc->vc_rows - b > 0)
1931 0 : fbcon_bmove(vc, b, 0, b - count, 0,
1932 0 : vc->vc_rows - b,
1933 0 : vc->vc_cols);
1934 : ywrap_down(vc, count);
1935 0 : if (t > 0)
1936 0 : fbcon_bmove(vc, count, 0, 0, 0, t,
1937 0 : vc->vc_cols);
1938 0 : } else if (info->flags & FBINFO_READS_FAST)
1939 0 : fbcon_bmove(vc, t, 0, t + count, 0,
1940 0 : b - t - count, vc->vc_cols);
1941 : else
1942 : goto redraw_down;
1943 0 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1944 0 : break;
1945 :
1946 : case SCROLL_PAN_MOVE:
1947 0 : if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1948 0 : && ((!scroll_partial && (b - t == vc->vc_rows))
1949 0 : || (scroll_partial
1950 0 : && (b - t - count >
1951 0 : 3 * vc->vc_rows >> 2)))) {
1952 0 : if (vc->vc_rows - b > 0)
1953 0 : fbcon_bmove(vc, b, 0, b - count, 0,
1954 0 : vc->vc_rows - b,
1955 0 : vc->vc_cols);
1956 : ypan_down(vc, count);
1957 0 : if (t > 0)
1958 0 : fbcon_bmove(vc, count, 0, 0, 0, t,
1959 0 : vc->vc_cols);
1960 0 : } else if (info->flags & FBINFO_READS_FAST)
1961 0 : fbcon_bmove(vc, t, 0, t + count, 0,
1962 0 : b - t - count, vc->vc_cols);
1963 : else
1964 : goto redraw_down;
1965 0 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1966 0 : break;
1967 :
1968 : case SCROLL_PAN_REDRAW:
1969 0 : if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1970 0 : && ((!scroll_partial && (b - t == vc->vc_rows))
1971 0 : || (scroll_partial
1972 0 : && (b - t - count >
1973 0 : 3 * vc->vc_rows >> 2)))) {
1974 0 : if (vc->vc_rows - b > 0)
1975 0 : fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1976 : b - count);
1977 : ypan_down_redraw(vc, t, count);
1978 0 : if (t > 0)
1979 0 : fbcon_redraw_move(vc, p, count, t, 0);
1980 : } else
1981 0 : fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1982 0 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1983 0 : break;
1984 :
1985 : case SCROLL_REDRAW:
1986 : redraw_down:
1987 0 : fbcon_redraw(vc, p, b - 1, b - t - count,
1988 0 : -count * vc->vc_cols);
1989 0 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1990 0 : scr_memsetw((unsigned short *) (vc->vc_origin +
1991 0 : vc->vc_size_row *
1992 : t),
1993 : vc->vc_video_erase_char,
1994 : vc->vc_size_row * count);
1995 : return 1;
1996 : }
1997 : }
1998 : return 0;
1999 : }
2000 :
2001 :
2002 0 : static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
2003 : int height, int width)
2004 : {
2005 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2006 0 : struct display *p = &fb_display[vc->vc_num];
2007 :
2008 0 : if (fbcon_is_inactive(vc, info))
2009 : return;
2010 :
2011 0 : if (!width || !height)
2012 : return;
2013 :
2014 : /* Split blits that cross physical y_wrap case.
2015 : * Pathological case involves 4 blits, better to use recursive
2016 : * code rather than unrolled case
2017 : *
2018 : * Recursive invocations don't need to erase the cursor over and
2019 : * over again, so we use fbcon_bmove_rec()
2020 : */
2021 0 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2022 0 : p->vrows - p->yscroll);
2023 : }
2024 :
2025 0 : static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
2026 : int dy, int dx, int height, int width, u_int y_break)
2027 : {
2028 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2029 0 : struct fbcon_ops *ops = info->fbcon_par;
2030 : u_int b;
2031 :
2032 0 : if (sy < y_break && sy + height > y_break) {
2033 0 : b = y_break - sy;
2034 0 : if (dy < sy) { /* Avoid trashing self */
2035 0 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2036 : y_break);
2037 0 : fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2038 0 : height - b, width, y_break);
2039 : } else {
2040 0 : fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2041 0 : height - b, width, y_break);
2042 0 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2043 : y_break);
2044 : }
2045 : return;
2046 : }
2047 :
2048 0 : if (dy < y_break && dy + height > y_break) {
2049 0 : b = y_break - dy;
2050 0 : if (dy < sy) { /* Avoid trashing self */
2051 0 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2052 : y_break);
2053 0 : fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2054 0 : height - b, width, y_break);
2055 : } else {
2056 0 : fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2057 0 : height - b, width, y_break);
2058 0 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2059 : y_break);
2060 : }
2061 : return;
2062 : }
2063 0 : ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2064 : height, width);
2065 : }
2066 :
2067 2 : static void updatescrollmode(struct display *p,
2068 : struct fb_info *info,
2069 : struct vc_data *vc)
2070 : {
2071 2 : struct fbcon_ops *ops = info->fbcon_par;
2072 2 : int fh = vc->vc_font.height;
2073 2 : int cap = info->flags;
2074 : u16 t = 0;
2075 2 : int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2076 : info->fix.xpanstep);
2077 2 : int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2078 2 : int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2079 2 : int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2080 : info->var.xres_virtual);
2081 2 : int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2082 2 : divides(ypan, vc->vc_font.height) && vyres > yres;
2083 2 : int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2084 0 : divides(ywrap, vc->vc_font.height) &&
2085 2 : divides(vc->vc_font.height, vyres) &&
2086 0 : divides(vc->vc_font.height, yres);
2087 2 : int reading_fast = cap & FBINFO_READS_FAST;
2088 2 : int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2089 : !(cap & FBINFO_HWACCEL_DISABLED);
2090 2 : int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2091 : !(cap & FBINFO_HWACCEL_DISABLED);
2092 :
2093 2 : p->vrows = vyres/fh;
2094 2 : if (yres > (fh * (vc->vc_rows + 1)))
2095 0 : p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2096 2 : if ((yres % fh) && (vyres % fh < yres % fh))
2097 0 : p->vrows--;
2098 :
2099 2 : if (good_wrap || good_pan) {
2100 0 : if (reading_fast || fast_copyarea)
2101 0 : p->scrollmode = good_wrap ?
2102 : SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
2103 : else
2104 0 : p->scrollmode = good_wrap ? SCROLL_REDRAW :
2105 : SCROLL_PAN_REDRAW;
2106 : } else {
2107 2 : if (reading_fast || (fast_copyarea && !fast_imageblit))
2108 2 : p->scrollmode = SCROLL_MOVE;
2109 : else
2110 0 : p->scrollmode = SCROLL_REDRAW;
2111 : }
2112 2 : }
2113 :
2114 0 : static int fbcon_resize(struct vc_data *vc, unsigned int width,
2115 : unsigned int height, unsigned int user)
2116 : {
2117 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2118 0 : struct fbcon_ops *ops = info->fbcon_par;
2119 0 : struct display *p = &fb_display[vc->vc_num];
2120 0 : struct fb_var_screeninfo var = info->var;
2121 : int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2122 :
2123 0 : virt_w = FBCON_SWAP(ops->rotate, width, height);
2124 0 : virt_h = FBCON_SWAP(ops->rotate, height, width);
2125 0 : virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2126 : vc->vc_font.height);
2127 0 : virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2128 : vc->vc_font.width);
2129 0 : var.xres = virt_w * virt_fw;
2130 0 : var.yres = virt_h * virt_fh;
2131 0 : x_diff = info->var.xres - var.xres;
2132 0 : y_diff = info->var.yres - var.yres;
2133 0 : if (x_diff < 0 || x_diff > virt_fw ||
2134 0 : y_diff < 0 || y_diff > virt_fh) {
2135 : const struct fb_videomode *mode;
2136 :
2137 : DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2138 0 : mode = fb_find_best_mode(&var, &info->modelist);
2139 0 : if (mode == NULL)
2140 : return -EINVAL;
2141 0 : display_to_var(&var, p);
2142 0 : fb_videomode_to_var(&var, mode);
2143 :
2144 0 : if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
2145 : return -EINVAL;
2146 :
2147 : DPRINTK("resize now %ix%i\n", var.xres, var.yres);
2148 0 : if (CON_IS_VISIBLE(vc)) {
2149 0 : var.activate = FB_ACTIVATE_NOW |
2150 : FB_ACTIVATE_FORCE;
2151 0 : fb_set_var(info, &var);
2152 : }
2153 0 : var_to_display(p, &info->var, info);
2154 0 : ops->var = info->var;
2155 : }
2156 0 : updatescrollmode(p, info, vc);
2157 0 : return 0;
2158 : }
2159 :
2160 6 : static int fbcon_switch(struct vc_data *vc)
2161 : {
2162 4 : struct fb_info *info, *old_info = NULL;
2163 : struct fbcon_ops *ops;
2164 2 : struct display *p = &fb_display[vc->vc_num];
2165 : struct fb_var_screeninfo var;
2166 : int i, ret, prev_console, charcnt = 256;
2167 :
2168 2 : info = registered_fb[con2fb_map[vc->vc_num]];
2169 2 : ops = info->fbcon_par;
2170 :
2171 2 : if (softback_top) {
2172 2 : if (softback_lines)
2173 : fbcon_set_origin(vc);
2174 2 : softback_top = softback_curr = softback_in = softback_buf;
2175 2 : softback_lines = 0;
2176 : fbcon_update_softback(vc);
2177 : }
2178 :
2179 2 : if (logo_shown >= 0) {
2180 0 : struct vc_data *conp2 = vc_cons[logo_shown].d;
2181 :
2182 0 : if (conp2->vc_top == logo_lines
2183 0 : && conp2->vc_bottom == conp2->vc_rows)
2184 0 : conp2->vc_top = 0;
2185 0 : logo_shown = FBCON_LOGO_CANSHOW;
2186 : }
2187 :
2188 2 : prev_console = ops->currcon;
2189 2 : if (prev_console != -1)
2190 1 : old_info = registered_fb[con2fb_map[prev_console]];
2191 : /*
2192 : * FIXME: If we have multiple fbdev's loaded, we need to
2193 : * update all info->currcon. Perhaps, we can place this
2194 : * in a centralized structure, but this might break some
2195 : * drivers.
2196 : *
2197 : * info->currcon = vc->vc_num;
2198 : */
2199 66 : for (i = 0; i < FB_MAX; i++) {
2200 64 : if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
2201 : struct fbcon_ops *o = registered_fb[i]->fbcon_par;
2202 :
2203 2 : o->currcon = vc->vc_num;
2204 : }
2205 : }
2206 2 : memset(&var, 0, sizeof(struct fb_var_screeninfo));
2207 2 : display_to_var(&var, p);
2208 2 : var.activate = FB_ACTIVATE_NOW;
2209 :
2210 : /*
2211 : * make sure we don't unnecessarily trip the memcmp()
2212 : * in fb_set_var()
2213 : */
2214 2 : info->var.activate = var.activate;
2215 2 : var.vmode |= info->var.vmode & ~FB_VMODE_MASK;
2216 2 : fb_set_var(info, &var);
2217 2 : ops->var = info->var;
2218 :
2219 3 : if (old_info != NULL && (old_info != info ||
2220 1 : info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
2221 0 : if (info->fbops->fb_set_par) {
2222 0 : ret = info->fbops->fb_set_par(info);
2223 :
2224 0 : if (ret)
2225 0 : printk(KERN_ERR "fbcon_switch: detected "
2226 : "unhandled fb_set_par error, "
2227 : "error code %d\n", ret);
2228 : }
2229 :
2230 0 : if (old_info != info)
2231 0 : fbcon_del_cursor_timer(old_info);
2232 : }
2233 :
2234 4 : if (fbcon_is_inactive(vc, info) ||
2235 2 : ops->blank_state != FB_BLANK_UNBLANK)
2236 0 : fbcon_del_cursor_timer(info);
2237 : else
2238 2 : fbcon_add_cursor_timer(info);
2239 :
2240 : set_blitting_type(vc, info);
2241 2 : ops->cursor_reset = 1;
2242 :
2243 2 : if (ops->rotate_font && ops->rotate_font(info, vc)) {
2244 0 : ops->rotate = FB_ROTATE_UR;
2245 : set_blitting_type(vc, info);
2246 : }
2247 :
2248 2 : vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
2249 2 : vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
2250 :
2251 2 : if (p->userfont)
2252 0 : charcnt = FNTCHARCNT(vc->vc_font.data);
2253 :
2254 2 : if (charcnt > 256)
2255 0 : vc->vc_complement_mask <<= 1;
2256 :
2257 2 : updatescrollmode(p, info, vc);
2258 :
2259 2 : switch (p->scrollmode) {
2260 : case SCROLL_WRAP_MOVE:
2261 0 : scrollback_phys_max = p->vrows - vc->vc_rows;
2262 0 : break;
2263 : case SCROLL_PAN_MOVE:
2264 : case SCROLL_PAN_REDRAW:
2265 0 : scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2266 0 : if (scrollback_phys_max < 0)
2267 0 : scrollback_phys_max = 0;
2268 : break;
2269 : default:
2270 2 : scrollback_phys_max = 0;
2271 2 : break;
2272 : }
2273 :
2274 2 : scrollback_max = 0;
2275 2 : scrollback_current = 0;
2276 :
2277 2 : if (!fbcon_is_inactive(vc, info)) {
2278 2 : ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2279 2 : ops->update_start(info);
2280 : }
2281 :
2282 2 : fbcon_set_palette(vc, color_table);
2283 2 : fbcon_clear_margins(vc, 0);
2284 :
2285 2 : if (logo_shown == FBCON_LOGO_DRAW) {
2286 :
2287 1 : logo_shown = fg_console;
2288 : /* This is protected above by initmem_freed */
2289 1 : fb_show_logo(info, ops->rotate);
2290 2 : update_region(vc,
2291 1 : vc->vc_origin + vc->vc_size_row * vc->vc_top,
2292 1 : vc->vc_size_row * (vc->vc_bottom -
2293 1 : vc->vc_top) / 2);
2294 1 : return 0;
2295 : }
2296 : return 1;
2297 : }
2298 :
2299 0 : static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2300 : int blank)
2301 : {
2302 : struct fb_event event;
2303 :
2304 0 : if (blank) {
2305 0 : unsigned short charmask = vc->vc_hi_font_mask ?
2306 : 0x1ff : 0xff;
2307 : unsigned short oldc;
2308 :
2309 0 : oldc = vc->vc_video_erase_char;
2310 0 : vc->vc_video_erase_char &= charmask;
2311 0 : fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2312 0 : vc->vc_video_erase_char = oldc;
2313 : }
2314 :
2315 :
2316 0 : if (!lock_fb_info(info))
2317 0 : return;
2318 0 : event.info = info;
2319 0 : event.data = ␣
2320 0 : fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
2321 : unlock_fb_info(info);
2322 : }
2323 :
2324 1 : static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2325 : {
2326 4 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2327 1 : struct fbcon_ops *ops = info->fbcon_par;
2328 :
2329 1 : if (mode_switch) {
2330 0 : struct fb_var_screeninfo var = info->var;
2331 :
2332 0 : ops->graphics = 1;
2333 :
2334 0 : if (!blank) {
2335 0 : var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2336 0 : fb_set_var(info, &var);
2337 0 : ops->graphics = 0;
2338 0 : ops->var = info->var;
2339 : }
2340 : }
2341 :
2342 1 : if (!fbcon_is_inactive(vc, info)) {
2343 1 : if (ops->blank_state != blank) {
2344 1 : ops->blank_state = blank;
2345 1 : fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2346 1 : ops->cursor_flash = (!blank);
2347 :
2348 1 : if (!(info->flags & FBINFO_MISC_USEREVENT))
2349 1 : if (fb_blank(info, blank))
2350 0 : fbcon_generic_blank(vc, info, blank);
2351 : }
2352 :
2353 1 : if (!blank)
2354 0 : update_screen(vc);
2355 : }
2356 :
2357 3 : if (mode_switch || fbcon_is_inactive(vc, info) ||
2358 1 : ops->blank_state != FB_BLANK_UNBLANK)
2359 1 : fbcon_del_cursor_timer(info);
2360 : else
2361 0 : fbcon_add_cursor_timer(info);
2362 :
2363 1 : return 0;
2364 : }
2365 :
2366 0 : static int fbcon_debug_enter(struct vc_data *vc)
2367 : {
2368 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2369 0 : struct fbcon_ops *ops = info->fbcon_par;
2370 :
2371 0 : ops->save_graphics = ops->graphics;
2372 0 : ops->graphics = 0;
2373 0 : if (info->fbops->fb_debug_enter)
2374 0 : info->fbops->fb_debug_enter(info);
2375 0 : fbcon_set_palette(vc, color_table);
2376 0 : return 0;
2377 : }
2378 :
2379 0 : static int fbcon_debug_leave(struct vc_data *vc)
2380 : {
2381 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2382 0 : struct fbcon_ops *ops = info->fbcon_par;
2383 :
2384 0 : ops->graphics = ops->save_graphics;
2385 0 : if (info->fbops->fb_debug_leave)
2386 0 : info->fbops->fb_debug_leave(info);
2387 0 : return 0;
2388 : }
2389 :
2390 0 : static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2391 : {
2392 0 : u8 *fontdata = vc->vc_font.data;
2393 0 : u8 *data = font->data;
2394 : int i, j;
2395 :
2396 0 : font->width = vc->vc_font.width;
2397 0 : font->height = vc->vc_font.height;
2398 0 : font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2399 0 : if (!font->data)
2400 : return 0;
2401 :
2402 0 : if (font->width <= 8) {
2403 0 : j = vc->vc_font.height;
2404 0 : for (i = 0; i < font->charcount; i++) {
2405 0 : memcpy(data, fontdata, j);
2406 0 : memset(data + j, 0, 32 - j);
2407 0 : data += 32;
2408 0 : fontdata += j;
2409 : }
2410 0 : } else if (font->width <= 16) {
2411 0 : j = vc->vc_font.height * 2;
2412 0 : for (i = 0; i < font->charcount; i++) {
2413 0 : memcpy(data, fontdata, j);
2414 0 : memset(data + j, 0, 64 - j);
2415 0 : data += 64;
2416 0 : fontdata += j;
2417 : }
2418 0 : } else if (font->width <= 24) {
2419 0 : for (i = 0; i < font->charcount; i++) {
2420 0 : for (j = 0; j < vc->vc_font.height; j++) {
2421 0 : *data++ = fontdata[0];
2422 0 : *data++ = fontdata[1];
2423 0 : *data++ = fontdata[2];
2424 0 : fontdata += sizeof(u32);
2425 : }
2426 0 : memset(data, 0, 3 * (32 - j));
2427 0 : data += 3 * (32 - j);
2428 : }
2429 : } else {
2430 0 : j = vc->vc_font.height * 4;
2431 0 : for (i = 0; i < font->charcount; i++) {
2432 0 : memcpy(data, fontdata, j);
2433 0 : memset(data + j, 0, 128 - j);
2434 0 : data += 128;
2435 0 : fontdata += j;
2436 : }
2437 : }
2438 : return 0;
2439 : }
2440 :
2441 0 : static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2442 : const u8 * data, int userfont)
2443 : {
2444 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2445 0 : struct fbcon_ops *ops = info->fbcon_par;
2446 0 : struct display *p = &fb_display[vc->vc_num];
2447 : int resize;
2448 : int cnt;
2449 : char *old_data = NULL;
2450 :
2451 0 : if (CON_IS_VISIBLE(vc) && softback_lines)
2452 : fbcon_set_origin(vc);
2453 :
2454 0 : resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2455 0 : if (p->userfont)
2456 0 : old_data = vc->vc_font.data;
2457 0 : if (userfont)
2458 0 : cnt = FNTCHARCNT(data);
2459 : else
2460 : cnt = 256;
2461 0 : vc->vc_font.data = (void *)(p->fontdata = data);
2462 0 : if ((p->userfont = userfont))
2463 0 : REFCOUNT(data)++;
2464 0 : vc->vc_font.width = w;
2465 0 : vc->vc_font.height = h;
2466 0 : if (vc->vc_hi_font_mask && cnt == 256) {
2467 0 : vc->vc_hi_font_mask = 0;
2468 0 : if (vc->vc_can_do_color) {
2469 0 : vc->vc_complement_mask >>= 1;
2470 0 : vc->vc_s_complement_mask >>= 1;
2471 : }
2472 :
2473 : /* ++Edmund: reorder the attribute bits */
2474 0 : if (vc->vc_can_do_color) {
2475 0 : unsigned short *cp =
2476 0 : (unsigned short *) vc->vc_origin;
2477 0 : int count = vc->vc_screenbuf_size / 2;
2478 : unsigned short c;
2479 0 : for (; count > 0; count--, cp++) {
2480 0 : c = scr_readw(cp);
2481 0 : scr_writew(((c & 0xfe00) >> 1) |
2482 : (c & 0xff), cp);
2483 : }
2484 0 : c = vc->vc_video_erase_char;
2485 0 : vc->vc_video_erase_char =
2486 0 : ((c & 0xfe00) >> 1) | (c & 0xff);
2487 0 : vc->vc_attr >>= 1;
2488 : }
2489 0 : } else if (!vc->vc_hi_font_mask && cnt == 512) {
2490 0 : vc->vc_hi_font_mask = 0x100;
2491 0 : if (vc->vc_can_do_color) {
2492 0 : vc->vc_complement_mask <<= 1;
2493 0 : vc->vc_s_complement_mask <<= 1;
2494 : }
2495 :
2496 : /* ++Edmund: reorder the attribute bits */
2497 : {
2498 0 : unsigned short *cp =
2499 0 : (unsigned short *) vc->vc_origin;
2500 0 : int count = vc->vc_screenbuf_size / 2;
2501 : unsigned short c;
2502 0 : for (; count > 0; count--, cp++) {
2503 : unsigned short newc;
2504 0 : c = scr_readw(cp);
2505 0 : if (vc->vc_can_do_color)
2506 0 : newc =
2507 0 : ((c & 0xff00) << 1) | (c &
2508 : 0xff);
2509 : else
2510 0 : newc = c & ~0x100;
2511 0 : scr_writew(newc, cp);
2512 : }
2513 0 : c = vc->vc_video_erase_char;
2514 0 : if (vc->vc_can_do_color) {
2515 0 : vc->vc_video_erase_char =
2516 0 : ((c & 0xff00) << 1) | (c & 0xff);
2517 0 : vc->vc_attr <<= 1;
2518 : } else
2519 0 : vc->vc_video_erase_char = c & ~0x100;
2520 : }
2521 :
2522 : }
2523 :
2524 0 : if (resize) {
2525 : int cols, rows;
2526 :
2527 0 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2528 0 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2529 0 : cols /= w;
2530 0 : rows /= h;
2531 0 : vc_resize(vc, cols, rows);
2532 0 : if (CON_IS_VISIBLE(vc) && softback_buf)
2533 : fbcon_update_softback(vc);
2534 0 : } else if (CON_IS_VISIBLE(vc)
2535 0 : && vc->vc_mode == KD_TEXT) {
2536 0 : fbcon_clear_margins(vc, 0);
2537 0 : update_screen(vc);
2538 : }
2539 :
2540 0 : if (old_data && (--REFCOUNT(old_data) == 0))
2541 0 : kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2542 0 : return 0;
2543 : }
2544 :
2545 0 : static int fbcon_copy_font(struct vc_data *vc, int con)
2546 : {
2547 0 : struct display *od = &fb_display[con];
2548 : struct console_font *f = &vc->vc_font;
2549 :
2550 0 : if (od->fontdata == f->data)
2551 : return 0; /* already the same font... */
2552 0 : return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2553 : }
2554 :
2555 : /*
2556 : * User asked to set font; we are guaranteed that
2557 : * a) width and height are in range 1..32
2558 : * b) charcount does not exceed 512
2559 : * but lets not assume that, since someone might someday want to use larger
2560 : * fonts. And charcount of 512 is small for unicode support.
2561 : *
2562 : * However, user space gives the font in 32 rows , regardless of
2563 : * actual font height. So a new API is needed if support for larger fonts
2564 : * is ever implemented.
2565 : */
2566 :
2567 0 : static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2568 : {
2569 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2570 0 : unsigned charcount = font->charcount;
2571 0 : int w = font->width;
2572 0 : int h = font->height;
2573 : int size;
2574 : int i, csum;
2575 0 : u8 *new_data, *data = font->data;
2576 0 : int pitch = (font->width+7) >> 3;
2577 :
2578 : /* Is there a reason why fbconsole couldn't handle any charcount >256?
2579 : * If not this check should be changed to charcount < 256 */
2580 0 : if (charcount != 256 && charcount != 512)
2581 : return -EINVAL;
2582 :
2583 : /* Make sure drawing engine can handle the font */
2584 0 : if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2585 0 : !(info->pixmap.blit_y & (1 << (font->height - 1))))
2586 : return -EINVAL;
2587 :
2588 : /* Make sure driver can handle the font length */
2589 : if (fbcon_invalid_charcount(info, charcount))
2590 : return -EINVAL;
2591 :
2592 0 : size = h * pitch * charcount;
2593 :
2594 0 : new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2595 :
2596 0 : if (!new_data)
2597 : return -ENOMEM;
2598 :
2599 0 : new_data += FONT_EXTRA_WORDS * sizeof(int);
2600 0 : FNTSIZE(new_data) = size;
2601 0 : FNTCHARCNT(new_data) = charcount;
2602 0 : REFCOUNT(new_data) = 0; /* usage counter */
2603 0 : for (i=0; i< charcount; i++) {
2604 0 : memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2605 : }
2606 :
2607 : /* Since linux has a nice crc32 function use it for counting font
2608 : * checksums. */
2609 0 : csum = crc32(0, new_data, size);
2610 :
2611 0 : FNTSUM(new_data) = csum;
2612 : /* Check if the same font is on some other console already */
2613 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
2614 0 : struct vc_data *tmp = vc_cons[i].d;
2615 :
2616 0 : if (fb_display[i].userfont &&
2617 0 : fb_display[i].fontdata &&
2618 0 : FNTSUM(fb_display[i].fontdata) == csum &&
2619 0 : FNTSIZE(fb_display[i].fontdata) == size &&
2620 0 : tmp->vc_font.width == w &&
2621 0 : !memcmp(fb_display[i].fontdata, new_data, size)) {
2622 0 : kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2623 0 : new_data = (u8 *)fb_display[i].fontdata;
2624 0 : break;
2625 : }
2626 : }
2627 0 : return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2628 : }
2629 :
2630 0 : static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2631 : {
2632 0 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2633 : const struct font_desc *f;
2634 :
2635 0 : if (!name)
2636 0 : f = get_default_font(info->var.xres, info->var.yres,
2637 : info->pixmap.blit_x, info->pixmap.blit_y);
2638 0 : else if (!(f = find_font(name)))
2639 : return -ENOENT;
2640 :
2641 0 : font->width = f->width;
2642 0 : font->height = f->height;
2643 0 : return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2644 : }
2645 :
2646 : static u16 palette_red[16];
2647 : static u16 palette_green[16];
2648 : static u16 palette_blue[16];
2649 :
2650 : static struct fb_cmap palette_cmap = {
2651 : 0, 16, palette_red, palette_green, palette_blue, NULL
2652 : };
2653 :
2654 9 : static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2655 : {
2656 9 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2657 : int i, j, k, depth;
2658 : u8 val;
2659 :
2660 9 : if (fbcon_is_inactive(vc, info))
2661 : return -EINVAL;
2662 :
2663 9 : if (!CON_IS_VISIBLE(vc))
2664 : return 0;
2665 :
2666 4 : depth = fb_get_color_depth(&info->var, &info->fix);
2667 4 : if (depth > 3) {
2668 64 : for (i = j = 0; i < 16; i++) {
2669 64 : k = table[i];
2670 64 : val = vc->vc_palette[j++];
2671 64 : palette_red[k] = (val << 8) | val;
2672 64 : val = vc->vc_palette[j++];
2673 64 : palette_green[k] = (val << 8) | val;
2674 64 : val = vc->vc_palette[j++];
2675 64 : palette_blue[k] = (val << 8) | val;
2676 : }
2677 4 : palette_cmap.len = 16;
2678 4 : palette_cmap.start = 0;
2679 : /*
2680 : * If framebuffer is capable of less than 16 colors,
2681 : * use default palette of fbcon.
2682 : */
2683 : } else
2684 0 : fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2685 :
2686 4 : return fb_set_cmap(&palette_cmap, info);
2687 : }
2688 :
2689 0 : static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2690 : {
2691 : unsigned long p;
2692 : int line;
2693 :
2694 0 : if (vc->vc_num != fg_console || !softback_lines)
2695 0 : return (u16 *) (vc->vc_origin + offset);
2696 0 : line = offset / vc->vc_size_row;
2697 0 : if (line >= softback_lines)
2698 0 : return (u16 *) (vc->vc_origin + offset -
2699 0 : softback_lines * vc->vc_size_row);
2700 0 : p = softback_curr + offset;
2701 0 : if (p >= softback_end)
2702 0 : p += softback_buf - softback_end;
2703 0 : return (u16 *) p;
2704 : }
2705 :
2706 117 : static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2707 : int *px, int *py)
2708 : {
2709 : unsigned long ret;
2710 : int x, y;
2711 :
2712 234 : if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2713 117 : unsigned long offset = (pos - vc->vc_origin) / 2;
2714 :
2715 117 : x = offset % vc->vc_cols;
2716 117 : y = offset / vc->vc_cols;
2717 117 : if (vc->vc_num == fg_console)
2718 117 : y += softback_lines;
2719 117 : ret = pos + (vc->vc_cols - x) * 2;
2720 0 : } else if (vc->vc_num == fg_console && softback_lines) {
2721 0 : unsigned long offset = pos - softback_curr;
2722 :
2723 0 : if (pos < softback_curr)
2724 0 : offset += softback_end - softback_buf;
2725 0 : offset /= 2;
2726 0 : x = offset % vc->vc_cols;
2727 0 : y = offset / vc->vc_cols;
2728 0 : ret = pos + (vc->vc_cols - x) * 2;
2729 0 : if (ret == softback_end)
2730 0 : ret = softback_buf;
2731 0 : if (ret == softback_in)
2732 : ret = vc->vc_origin;
2733 : } else {
2734 : /* Should not happen */
2735 : x = y = 0;
2736 : ret = vc->vc_origin;
2737 : }
2738 117 : if (px)
2739 2 : *px = x;
2740 117 : if (py)
2741 2 : *py = y;
2742 117 : return ret;
2743 : }
2744 :
2745 : /* As we might be inside of softback, we may work with non-contiguous buffer,
2746 : that's why we have to use a separate routine. */
2747 0 : static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2748 : {
2749 0 : while (cnt--) {
2750 0 : u16 a = scr_readw(p);
2751 0 : if (!vc->vc_can_do_color)
2752 0 : a ^= 0x0800;
2753 0 : else if (vc->vc_hi_font_mask == 0x100)
2754 0 : a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2755 0 : (((a) & 0x0e00) << 4);
2756 : else
2757 0 : a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2758 0 : (((a) & 0x0700) << 4);
2759 0 : scr_writew(a, p++);
2760 0 : if (p == (u16 *) softback_end)
2761 0 : p = (u16 *) softback_buf;
2762 0 : if (p == (u16 *) softback_in)
2763 0 : p = (u16 *) vc->vc_origin;
2764 : }
2765 0 : }
2766 :
2767 0 : static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2768 : {
2769 0 : struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2770 0 : struct fbcon_ops *ops = info->fbcon_par;
2771 0 : struct display *disp = &fb_display[fg_console];
2772 : int offset, limit, scrollback_old;
2773 :
2774 0 : if (softback_top) {
2775 0 : if (vc->vc_num != fg_console)
2776 : return 0;
2777 0 : if (vc->vc_mode != KD_TEXT || !lines)
2778 : return 0;
2779 0 : if (logo_shown >= 0) {
2780 0 : struct vc_data *conp2 = vc_cons[logo_shown].d;
2781 :
2782 0 : if (conp2->vc_top == logo_lines
2783 0 : && conp2->vc_bottom == conp2->vc_rows)
2784 0 : conp2->vc_top = 0;
2785 0 : if (logo_shown == vc->vc_num) {
2786 : unsigned long p, q;
2787 : int i;
2788 :
2789 0 : p = softback_in;
2790 0 : q = vc->vc_origin +
2791 0 : logo_lines * vc->vc_size_row;
2792 0 : for (i = 0; i < logo_lines; i++) {
2793 0 : if (p == softback_top)
2794 : break;
2795 0 : if (p == softback_buf)
2796 0 : p = softback_end;
2797 0 : p -= vc->vc_size_row;
2798 0 : q -= vc->vc_size_row;
2799 0 : scr_memcpyw((u16 *) q, (u16 *) p,
2800 : vc->vc_size_row);
2801 : }
2802 0 : softback_in = softback_curr = p;
2803 0 : update_region(vc, vc->vc_origin,
2804 0 : logo_lines * vc->vc_cols);
2805 : }
2806 0 : logo_shown = FBCON_LOGO_CANSHOW;
2807 : }
2808 0 : fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2809 0 : fbcon_redraw_softback(vc, disp, lines);
2810 0 : fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2811 0 : return 0;
2812 : }
2813 :
2814 0 : if (!scrollback_phys_max)
2815 : return -ENOSYS;
2816 :
2817 0 : scrollback_old = scrollback_current;
2818 0 : scrollback_current -= lines;
2819 0 : if (scrollback_current < 0)
2820 0 : scrollback_current = 0;
2821 0 : else if (scrollback_current > scrollback_max)
2822 0 : scrollback_current = scrollback_max;
2823 0 : if (scrollback_current == scrollback_old)
2824 : return 0;
2825 :
2826 0 : if (fbcon_is_inactive(vc, info))
2827 : return 0;
2828 :
2829 0 : fbcon_cursor(vc, CM_ERASE);
2830 :
2831 0 : offset = disp->yscroll - scrollback_current;
2832 0 : limit = disp->vrows;
2833 0 : switch (disp->scrollmode) {
2834 : case SCROLL_WRAP_MOVE:
2835 0 : info->var.vmode |= FB_VMODE_YWRAP;
2836 0 : break;
2837 : case SCROLL_PAN_MOVE:
2838 : case SCROLL_PAN_REDRAW:
2839 0 : limit -= vc->vc_rows;
2840 0 : info->var.vmode &= ~FB_VMODE_YWRAP;
2841 0 : break;
2842 : }
2843 0 : if (offset < 0)
2844 0 : offset += limit;
2845 0 : else if (offset >= limit)
2846 0 : offset -= limit;
2847 :
2848 0 : ops->var.xoffset = 0;
2849 0 : ops->var.yoffset = offset * vc->vc_font.height;
2850 0 : ops->update_start(info);
2851 :
2852 0 : if (!scrollback_current)
2853 0 : fbcon_cursor(vc, CM_DRAW);
2854 : return 0;
2855 : }
2856 :
2857 3 : static int fbcon_set_origin(struct vc_data *vc)
2858 : {
2859 3 : if (softback_lines)
2860 0 : fbcon_scrolldelta(vc, softback_lines);
2861 3 : return 0;
2862 : }
2863 :
2864 0 : static void fbcon_suspended(struct fb_info *info)
2865 : {
2866 : struct vc_data *vc = NULL;
2867 0 : struct fbcon_ops *ops = info->fbcon_par;
2868 :
2869 0 : if (!ops || ops->currcon < 0)
2870 0 : return;
2871 0 : vc = vc_cons[ops->currcon].d;
2872 :
2873 : /* Clear cursor, restore saved data */
2874 0 : fbcon_cursor(vc, CM_ERASE);
2875 : }
2876 :
2877 0 : static void fbcon_resumed(struct fb_info *info)
2878 : {
2879 : struct vc_data *vc;
2880 0 : struct fbcon_ops *ops = info->fbcon_par;
2881 :
2882 0 : if (!ops || ops->currcon < 0)
2883 0 : return;
2884 0 : vc = vc_cons[ops->currcon].d;
2885 :
2886 0 : update_screen(vc);
2887 : }
2888 :
2889 0 : static void fbcon_modechanged(struct fb_info *info)
2890 : {
2891 0 : struct fbcon_ops *ops = info->fbcon_par;
2892 0 : struct vc_data *vc;
2893 : struct display *p;
2894 : int rows, cols;
2895 :
2896 0 : if (!ops || ops->currcon < 0)
2897 : return;
2898 0 : vc = vc_cons[ops->currcon].d;
2899 0 : if (vc->vc_mode != KD_TEXT ||
2900 0 : registered_fb[con2fb_map[ops->currcon]] != info)
2901 : return;
2902 :
2903 0 : p = &fb_display[vc->vc_num];
2904 : set_blitting_type(vc, info);
2905 :
2906 0 : if (CON_IS_VISIBLE(vc)) {
2907 0 : var_to_display(p, &info->var, info);
2908 0 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2909 0 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2910 0 : cols /= vc->vc_font.width;
2911 0 : rows /= vc->vc_font.height;
2912 0 : vc_resize(vc, cols, rows);
2913 0 : updatescrollmode(p, info, vc);
2914 0 : scrollback_max = 0;
2915 0 : scrollback_current = 0;
2916 :
2917 0 : if (!fbcon_is_inactive(vc, info)) {
2918 0 : ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2919 0 : ops->update_start(info);
2920 : }
2921 :
2922 0 : fbcon_set_palette(vc, color_table);
2923 0 : update_screen(vc);
2924 0 : if (softback_buf)
2925 : fbcon_update_softback(vc);
2926 : }
2927 : }
2928 :
2929 0 : static void fbcon_set_all_vcs(struct fb_info *info)
2930 : {
2931 0 : struct fbcon_ops *ops = info->fbcon_par;
2932 : struct vc_data *vc;
2933 : struct display *p;
2934 : int i, rows, cols, fg = -1;
2935 :
2936 0 : if (!ops || ops->currcon < 0)
2937 0 : return;
2938 :
2939 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
2940 0 : vc = vc_cons[i].d;
2941 0 : if (!vc || vc->vc_mode != KD_TEXT ||
2942 0 : registered_fb[con2fb_map[i]] != info)
2943 0 : continue;
2944 :
2945 0 : if (CON_IS_VISIBLE(vc)) {
2946 : fg = i;
2947 0 : continue;
2948 : }
2949 :
2950 0 : p = &fb_display[vc->vc_num];
2951 : set_blitting_type(vc, info);
2952 0 : var_to_display(p, &info->var, info);
2953 0 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2954 0 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2955 0 : cols /= vc->vc_font.width;
2956 0 : rows /= vc->vc_font.height;
2957 0 : vc_resize(vc, cols, rows);
2958 : }
2959 :
2960 0 : if (fg != -1)
2961 0 : fbcon_modechanged(info);
2962 : }
2963 :
2964 0 : static int fbcon_mode_deleted(struct fb_info *info,
2965 : struct fb_videomode *mode)
2966 : {
2967 : struct fb_info *fb_info;
2968 : struct display *p;
2969 : int i, j, found = 0;
2970 :
2971 : /* before deletion, ensure that mode is not in use */
2972 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
2973 0 : j = con2fb_map[i];
2974 0 : if (j == -1)
2975 0 : continue;
2976 0 : fb_info = registered_fb[j];
2977 0 : if (fb_info != info)
2978 0 : continue;
2979 0 : p = &fb_display[i];
2980 0 : if (!p || !p->mode)
2981 0 : continue;
2982 0 : if (fb_mode_is_equal(p->mode, mode)) {
2983 : found = 1;
2984 : break;
2985 : }
2986 : }
2987 0 : return found;
2988 : }
2989 :
2990 : #ifdef CONFIG_VT_HW_CONSOLE_BINDING
2991 0 : static int fbcon_unbind(void)
2992 : {
2993 : int ret;
2994 :
2995 0 : ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc,
2996 : fbcon_is_default);
2997 :
2998 0 : if (!ret)
2999 0 : fbcon_has_console_bind = 0;
3000 :
3001 0 : return ret;
3002 : }
3003 : #else
3004 : static inline int fbcon_unbind(void)
3005 : {
3006 : return -EINVAL;
3007 : }
3008 : #endif /* CONFIG_VT_HW_CONSOLE_BINDING */
3009 :
3010 : /* called with console_lock held */
3011 0 : static int fbcon_fb_unbind(int idx)
3012 : {
3013 : int i, new_idx = -1, ret = 0;
3014 :
3015 0 : if (!fbcon_has_console_bind)
3016 : return 0;
3017 :
3018 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3019 0 : if (con2fb_map[i] != idx &&
3020 : con2fb_map[i] != -1) {
3021 : new_idx = i;
3022 : break;
3023 : }
3024 : }
3025 :
3026 0 : if (new_idx != -1) {
3027 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3028 0 : if (con2fb_map[i] == idx)
3029 0 : set_con2fb_map(i, new_idx, 0);
3030 : }
3031 : } else {
3032 0 : struct fb_info *info = registered_fb[idx];
3033 :
3034 : /* This is sort of like set_con2fb_map, except it maps
3035 : * the consoles to no device and then releases the
3036 : * oldinfo to free memory and cancel the cursor blink
3037 : * timer. I can imagine this just becoming part of
3038 : * set_con2fb_map where new_idx is -1
3039 : */
3040 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3041 0 : if (con2fb_map[i] == idx) {
3042 0 : con2fb_map[i] = -1;
3043 0 : if (!search_fb_in_map(idx)) {
3044 0 : ret = con2fb_release_oldinfo(vc_cons[i].d,
3045 : info, NULL, i,
3046 : idx, 0);
3047 0 : if (ret) {
3048 0 : con2fb_map[i] = idx;
3049 0 : return ret;
3050 : }
3051 : }
3052 : }
3053 : }
3054 0 : ret = fbcon_unbind();
3055 : }
3056 :
3057 0 : return ret;
3058 : }
3059 :
3060 : /* called with console_lock held */
3061 0 : static int fbcon_fb_unregistered(struct fb_info *info)
3062 : {
3063 : int i, idx;
3064 :
3065 0 : idx = info->node;
3066 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3067 0 : if (con2fb_map[i] == idx)
3068 0 : con2fb_map[i] = -1;
3069 : }
3070 :
3071 0 : if (idx == info_idx) {
3072 0 : info_idx = -1;
3073 :
3074 0 : for (i = 0; i < FB_MAX; i++) {
3075 0 : if (registered_fb[i] != NULL) {
3076 0 : info_idx = i;
3077 : break;
3078 : }
3079 : }
3080 : }
3081 :
3082 0 : if (info_idx != -1) {
3083 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3084 0 : if (con2fb_map[i] == -1)
3085 0 : con2fb_map[i] = info_idx;
3086 : }
3087 : }
3088 :
3089 0 : if (primary_device == idx)
3090 0 : primary_device = -1;
3091 :
3092 0 : if (!num_registered_fb)
3093 0 : do_unregister_con_driver(&fb_con);
3094 :
3095 0 : return 0;
3096 : }
3097 :
3098 : /* called with console_lock held */
3099 0 : static void fbcon_remap_all(int idx)
3100 : {
3101 : int i;
3102 0 : for (i = first_fb_vc; i <= last_fb_vc; i++)
3103 0 : set_con2fb_map(i, idx, 0);
3104 :
3105 0 : if (con_is_bound(&fb_con)) {
3106 0 : printk(KERN_INFO "fbcon: Remapping primary device, "
3107 : "fb%i, to tty %i-%i\n", idx,
3108 : first_fb_vc + 1, last_fb_vc + 1);
3109 0 : info_idx = idx;
3110 : }
3111 0 : }
3112 :
3113 : #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
3114 : static void fbcon_select_primary(struct fb_info *info)
3115 : {
3116 : if (!map_override && primary_device == -1 &&
3117 : fb_is_primary_device(info)) {
3118 : int i;
3119 :
3120 : printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
3121 : info->fix.id, info->node);
3122 : primary_device = info->node;
3123 :
3124 : for (i = first_fb_vc; i <= last_fb_vc; i++)
3125 : con2fb_map_boot[i] = primary_device;
3126 :
3127 : if (con_is_bound(&fb_con)) {
3128 : printk(KERN_INFO "fbcon: Remapping primary device, "
3129 : "fb%i, to tty %i-%i\n", info->node,
3130 : first_fb_vc + 1, last_fb_vc + 1);
3131 : info_idx = primary_device;
3132 : }
3133 : }
3134 :
3135 : }
3136 : #else
3137 : static inline void fbcon_select_primary(struct fb_info *info)
3138 : {
3139 : return;
3140 : }
3141 : #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */
3142 :
3143 : /* called with console_lock held */
3144 1 : static int fbcon_fb_registered(struct fb_info *info)
3145 : {
3146 : int ret = 0, i, idx;
3147 :
3148 1 : idx = info->node;
3149 : fbcon_select_primary(info);
3150 :
3151 1 : if (info_idx == -1) {
3152 1 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3153 1 : if (con2fb_map_boot[i] == idx) {
3154 1 : info_idx = idx;
3155 : break;
3156 : }
3157 : }
3158 :
3159 1 : if (info_idx != -1)
3160 1 : ret = do_fbcon_takeover(1);
3161 : } else {
3162 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3163 0 : if (con2fb_map_boot[i] == idx)
3164 0 : set_con2fb_map(i, idx, 0);
3165 : }
3166 : }
3167 :
3168 1 : return ret;
3169 : }
3170 :
3171 1 : static void fbcon_fb_blanked(struct fb_info *info, int blank)
3172 : {
3173 1 : struct fbcon_ops *ops = info->fbcon_par;
3174 : struct vc_data *vc;
3175 :
3176 1 : if (!ops || ops->currcon < 0)
3177 : return;
3178 :
3179 1 : vc = vc_cons[ops->currcon].d;
3180 2 : if (vc->vc_mode != KD_TEXT ||
3181 1 : registered_fb[con2fb_map[ops->currcon]] != info)
3182 : return;
3183 :
3184 1 : if (CON_IS_VISIBLE(vc)) {
3185 1 : if (blank)
3186 1 : do_blank_screen(0);
3187 : else
3188 0 : do_unblank_screen(0);
3189 : }
3190 1 : ops->blank_state = blank;
3191 : }
3192 :
3193 0 : static void fbcon_new_modelist(struct fb_info *info)
3194 : {
3195 : int i;
3196 : struct vc_data *vc;
3197 : struct fb_var_screeninfo var;
3198 : const struct fb_videomode *mode;
3199 :
3200 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3201 0 : if (registered_fb[con2fb_map[i]] != info)
3202 0 : continue;
3203 0 : if (!fb_display[i].mode)
3204 0 : continue;
3205 0 : vc = vc_cons[i].d;
3206 0 : display_to_var(&var, &fb_display[i]);
3207 0 : mode = fb_find_nearest_mode(fb_display[i].mode,
3208 : &info->modelist);
3209 0 : fb_videomode_to_var(&var, mode);
3210 0 : fbcon_set_disp(info, &var, vc->vc_num);
3211 : }
3212 0 : }
3213 :
3214 0 : static void fbcon_get_requirement(struct fb_info *info,
3215 : struct fb_blit_caps *caps)
3216 : {
3217 : struct vc_data *vc;
3218 : struct display *p;
3219 :
3220 0 : if (caps->flags) {
3221 : int i, charcnt;
3222 :
3223 0 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3224 0 : vc = vc_cons[i].d;
3225 0 : if (vc && vc->vc_mode == KD_TEXT &&
3226 0 : info->node == con2fb_map[i]) {
3227 0 : p = &fb_display[i];
3228 0 : caps->x |= 1 << (vc->vc_font.width - 1);
3229 0 : caps->y |= 1 << (vc->vc_font.height - 1);
3230 0 : charcnt = (p->userfont) ?
3231 0 : FNTCHARCNT(p->fontdata) : 256;
3232 0 : if (caps->len < charcnt)
3233 0 : caps->len = charcnt;
3234 : }
3235 : }
3236 : } else {
3237 0 : vc = vc_cons[fg_console].d;
3238 :
3239 0 : if (vc && vc->vc_mode == KD_TEXT &&
3240 0 : info->node == con2fb_map[fg_console]) {
3241 0 : p = &fb_display[fg_console];
3242 0 : caps->x = 1 << (vc->vc_font.width - 1);
3243 0 : caps->y = 1 << (vc->vc_font.height - 1);
3244 0 : caps->len = (p->userfont) ?
3245 0 : FNTCHARCNT(p->fontdata) : 256;
3246 : }
3247 : }
3248 0 : }
3249 :
3250 3 : static int fbcon_event_notify(struct notifier_block *self,
3251 : unsigned long action, void *data)
3252 : {
3253 : struct fb_event *event = data;
3254 4 : struct fb_info *info = event->info;
3255 : struct fb_videomode *mode;
3256 : struct fb_con2fbmap *con2fb;
3257 : struct fb_blit_caps *caps;
3258 : int idx, ret = 0;
3259 :
3260 : /*
3261 : * ignore all events except driver registration and deregistration
3262 : * if fbcon is not active
3263 : */
3264 3 : if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
3265 : action == FB_EVENT_FB_UNREGISTERED))
3266 : goto done;
3267 :
3268 3 : switch(action) {
3269 : case FB_EVENT_SUSPEND:
3270 0 : fbcon_suspended(info);
3271 0 : break;
3272 : case FB_EVENT_RESUME:
3273 0 : fbcon_resumed(info);
3274 0 : break;
3275 : case FB_EVENT_MODE_CHANGE:
3276 0 : fbcon_modechanged(info);
3277 0 : break;
3278 : case FB_EVENT_MODE_CHANGE_ALL:
3279 0 : fbcon_set_all_vcs(info);
3280 0 : break;
3281 : case FB_EVENT_MODE_DELETE:
3282 0 : mode = event->data;
3283 0 : ret = fbcon_mode_deleted(info, mode);
3284 0 : break;
3285 : case FB_EVENT_FB_UNBIND:
3286 0 : idx = info->node;
3287 0 : ret = fbcon_fb_unbind(idx);
3288 0 : break;
3289 : case FB_EVENT_FB_REGISTERED:
3290 1 : ret = fbcon_fb_registered(info);
3291 1 : break;
3292 : case FB_EVENT_FB_UNREGISTERED:
3293 0 : ret = fbcon_fb_unregistered(info);
3294 0 : break;
3295 : case FB_EVENT_SET_CONSOLE_MAP:
3296 : /* called with console lock held */
3297 0 : con2fb = event->data;
3298 0 : ret = set_con2fb_map(con2fb->console - 1,
3299 0 : con2fb->framebuffer, 1);
3300 0 : break;
3301 : case FB_EVENT_GET_CONSOLE_MAP:
3302 0 : con2fb = event->data;
3303 0 : con2fb->framebuffer = con2fb_map[con2fb->console - 1];
3304 0 : break;
3305 : case FB_EVENT_BLANK:
3306 1 : fbcon_fb_blanked(info, *(int *)event->data);
3307 1 : break;
3308 : case FB_EVENT_NEW_MODELIST:
3309 0 : fbcon_new_modelist(info);
3310 0 : break;
3311 : case FB_EVENT_GET_REQ:
3312 0 : caps = event->data;
3313 0 : fbcon_get_requirement(info, caps);
3314 0 : break;
3315 : case FB_EVENT_REMAP_ALL_CONSOLE:
3316 0 : idx = info->node;
3317 0 : fbcon_remap_all(idx);
3318 0 : break;
3319 : }
3320 : done:
3321 3 : return ret;
3322 : }
3323 :
3324 : /*
3325 : * The console `switch' structure for the frame buffer based console
3326 : */
3327 :
3328 : static const struct consw fb_con = {
3329 : .owner = THIS_MODULE,
3330 : .con_startup = fbcon_startup,
3331 : .con_init = fbcon_init,
3332 : .con_deinit = fbcon_deinit,
3333 : .con_clear = fbcon_clear,
3334 : .con_putc = fbcon_putc,
3335 : .con_putcs = fbcon_putcs,
3336 : .con_cursor = fbcon_cursor,
3337 : .con_scroll = fbcon_scroll,
3338 : .con_bmove = fbcon_bmove,
3339 : .con_switch = fbcon_switch,
3340 : .con_blank = fbcon_blank,
3341 : .con_font_set = fbcon_set_font,
3342 : .con_font_get = fbcon_get_font,
3343 : .con_font_default = fbcon_set_def_font,
3344 : .con_font_copy = fbcon_copy_font,
3345 : .con_set_palette = fbcon_set_palette,
3346 : .con_scrolldelta = fbcon_scrolldelta,
3347 : .con_set_origin = fbcon_set_origin,
3348 : .con_invert_region = fbcon_invert_region,
3349 : .con_screen_pos = fbcon_screen_pos,
3350 : .con_getxy = fbcon_getxy,
3351 : .con_resize = fbcon_resize,
3352 : .con_debug_enter = fbcon_debug_enter,
3353 : .con_debug_leave = fbcon_debug_leave,
3354 : };
3355 :
3356 : static struct notifier_block fbcon_event_notifier = {
3357 : .notifier_call = fbcon_event_notify,
3358 : };
3359 :
3360 0 : static ssize_t store_rotate(struct device *device,
3361 : struct device_attribute *attr, const char *buf,
3362 : size_t count)
3363 : {
3364 : struct fb_info *info;
3365 : int rotate, idx;
3366 : char **last = NULL;
3367 :
3368 0 : if (fbcon_has_exited)
3369 0 : return count;
3370 :
3371 0 : console_lock();
3372 0 : idx = con2fb_map[fg_console];
3373 :
3374 0 : if (idx == -1 || registered_fb[idx] == NULL)
3375 : goto err;
3376 :
3377 : info = registered_fb[idx];
3378 0 : rotate = simple_strtoul(buf, last, 0);
3379 : fbcon_rotate(info, rotate);
3380 : err:
3381 0 : console_unlock();
3382 0 : return count;
3383 : }
3384 :
3385 0 : static ssize_t store_rotate_all(struct device *device,
3386 : struct device_attribute *attr,const char *buf,
3387 : size_t count)
3388 : {
3389 : struct fb_info *info;
3390 : int rotate, idx;
3391 : char **last = NULL;
3392 :
3393 0 : if (fbcon_has_exited)
3394 0 : return count;
3395 :
3396 0 : console_lock();
3397 0 : idx = con2fb_map[fg_console];
3398 :
3399 0 : if (idx == -1 || registered_fb[idx] == NULL)
3400 : goto err;
3401 :
3402 : info = registered_fb[idx];
3403 0 : rotate = simple_strtoul(buf, last, 0);
3404 : fbcon_rotate_all(info, rotate);
3405 : err:
3406 0 : console_unlock();
3407 0 : return count;
3408 : }
3409 :
3410 0 : static ssize_t show_rotate(struct device *device,
3411 : struct device_attribute *attr,char *buf)
3412 : {
3413 0 : struct fb_info *info;
3414 : int rotate = 0, idx;
3415 :
3416 0 : if (fbcon_has_exited)
3417 : return 0;
3418 :
3419 0 : console_lock();
3420 0 : idx = con2fb_map[fg_console];
3421 :
3422 0 : if (idx == -1 || registered_fb[idx] == NULL)
3423 : goto err;
3424 :
3425 : info = registered_fb[idx];
3426 : rotate = fbcon_get_rotate(info);
3427 : err:
3428 0 : console_unlock();
3429 0 : return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3430 : }
3431 :
3432 0 : static ssize_t show_cursor_blink(struct device *device,
3433 : struct device_attribute *attr, char *buf)
3434 : {
3435 : struct fb_info *info;
3436 : struct fbcon_ops *ops;
3437 : int idx, blink = -1;
3438 :
3439 0 : if (fbcon_has_exited)
3440 : return 0;
3441 :
3442 0 : console_lock();
3443 0 : idx = con2fb_map[fg_console];
3444 :
3445 0 : if (idx == -1 || registered_fb[idx] == NULL)
3446 : goto err;
3447 :
3448 : info = registered_fb[idx];
3449 0 : ops = info->fbcon_par;
3450 :
3451 0 : if (!ops)
3452 : goto err;
3453 :
3454 0 : blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3455 : err:
3456 0 : console_unlock();
3457 0 : return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3458 : }
3459 :
3460 0 : static ssize_t store_cursor_blink(struct device *device,
3461 : struct device_attribute *attr,
3462 : const char *buf, size_t count)
3463 : {
3464 0 : struct fb_info *info;
3465 : int blink, idx;
3466 : char **last = NULL;
3467 :
3468 0 : if (fbcon_has_exited)
3469 0 : return count;
3470 :
3471 0 : console_lock();
3472 0 : idx = con2fb_map[fg_console];
3473 :
3474 0 : if (idx == -1 || registered_fb[idx] == NULL)
3475 : goto err;
3476 :
3477 : info = registered_fb[idx];
3478 :
3479 0 : if (!info->fbcon_par)
3480 : goto err;
3481 :
3482 0 : blink = simple_strtoul(buf, last, 0);
3483 :
3484 0 : if (blink) {
3485 0 : fbcon_cursor_noblink = 0;
3486 0 : fbcon_add_cursor_timer(info);
3487 : } else {
3488 0 : fbcon_cursor_noblink = 1;
3489 0 : fbcon_del_cursor_timer(info);
3490 : }
3491 :
3492 : err:
3493 0 : console_unlock();
3494 0 : return count;
3495 : }
3496 :
3497 : static struct device_attribute device_attrs[] = {
3498 : __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3499 : __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
3500 : __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3501 : store_cursor_blink),
3502 : };
3503 :
3504 1 : static int fbcon_init_device(void)
3505 : {
3506 : int i, error = 0;
3507 :
3508 1 : fbcon_has_sysfs = 1;
3509 :
3510 4 : for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
3511 3 : error = device_create_file(fbcon_device, &device_attrs[i]);
3512 :
3513 3 : if (error)
3514 : break;
3515 : }
3516 :
3517 1 : if (error) {
3518 0 : while (--i >= 0)
3519 0 : device_remove_file(fbcon_device, &device_attrs[i]);
3520 :
3521 0 : fbcon_has_sysfs = 0;
3522 : }
3523 :
3524 1 : return 0;
3525 : }
3526 :
3527 1 : static void fbcon_start(void)
3528 : {
3529 1 : if (num_registered_fb) {
3530 : int i;
3531 :
3532 0 : console_lock();
3533 :
3534 0 : for (i = 0; i < FB_MAX; i++) {
3535 0 : if (registered_fb[i] != NULL) {
3536 0 : info_idx = i;
3537 0 : break;
3538 : }
3539 : }
3540 :
3541 0 : do_fbcon_takeover(0);
3542 0 : console_unlock();
3543 :
3544 : }
3545 1 : }
3546 :
3547 0 : static void fbcon_exit(void)
3548 : {
3549 0 : struct fb_info *info;
3550 : int i, j, mapped;
3551 :
3552 0 : if (fbcon_has_exited)
3553 0 : return;
3554 :
3555 0 : kfree((void *)softback_buf);
3556 0 : softback_buf = 0UL;
3557 :
3558 0 : for (i = 0; i < FB_MAX; i++) {
3559 : int pending = 0;
3560 :
3561 : mapped = 0;
3562 0 : info = registered_fb[i];
3563 :
3564 0 : if (info == NULL)
3565 0 : continue;
3566 :
3567 0 : if (info->queue.func)
3568 0 : pending = cancel_work_sync(&info->queue);
3569 : DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" :
3570 : "no"));
3571 :
3572 0 : for (j = first_fb_vc; j <= last_fb_vc; j++) {
3573 0 : if (con2fb_map[j] == i) {
3574 : mapped = 1;
3575 : break;
3576 : }
3577 : }
3578 :
3579 0 : if (mapped) {
3580 0 : if (info->fbops->fb_release)
3581 0 : info->fbops->fb_release(info, 0);
3582 0 : module_put(info->fbops->owner);
3583 :
3584 0 : if (info->fbcon_par) {
3585 : struct fbcon_ops *ops = info->fbcon_par;
3586 :
3587 0 : fbcon_del_cursor_timer(info);
3588 0 : kfree(ops->cursor_src);
3589 0 : kfree(ops->cursor_state.mask);
3590 0 : kfree(info->fbcon_par);
3591 0 : info->fbcon_par = NULL;
3592 : }
3593 :
3594 0 : if (info->queue.func == fb_flashcursor)
3595 0 : info->queue.func = NULL;
3596 : }
3597 : }
3598 :
3599 0 : fbcon_has_exited = 1;
3600 : }
3601 :
3602 1 : static int __init fb_console_init(void)
3603 : {
3604 : int i;
3605 :
3606 1 : console_lock();
3607 1 : fb_register_client(&fbcon_event_notifier);
3608 1 : fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
3609 : "fbcon");
3610 :
3611 1 : if (IS_ERR(fbcon_device)) {
3612 0 : printk(KERN_WARNING "Unable to create device "
3613 : "for fbcon; errno = %ld\n",
3614 : PTR_ERR(fbcon_device));
3615 0 : fbcon_device = NULL;
3616 : } else
3617 1 : fbcon_init_device();
3618 :
3619 63 : for (i = 0; i < MAX_NR_CONSOLES; i++)
3620 63 : con2fb_map[i] = -1;
3621 :
3622 1 : console_unlock();
3623 1 : fbcon_start();
3624 1 : return 0;
3625 : }
3626 :
3627 : fs_initcall(fb_console_init);
3628 :
3629 : #ifdef MODULE
3630 :
3631 : static void __exit fbcon_deinit_device(void)
3632 : {
3633 : int i;
3634 :
3635 : if (fbcon_has_sysfs) {
3636 : for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
3637 : device_remove_file(fbcon_device, &device_attrs[i]);
3638 :
3639 : fbcon_has_sysfs = 0;
3640 : }
3641 : }
3642 :
3643 : static void __exit fb_console_exit(void)
3644 : {
3645 : console_lock();
3646 : fb_unregister_client(&fbcon_event_notifier);
3647 : fbcon_deinit_device();
3648 : device_destroy(fb_class, MKDEV(0, 0));
3649 : fbcon_exit();
3650 : do_unregister_con_driver(&fb_con);
3651 : console_unlock();
3652 : }
3653 :
3654 : module_exit(fb_console_exit);
3655 :
3656 : #endif
3657 :
3658 : MODULE_LICENSE("GPL");
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