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 : #include <asm/system.h>
81 :
82 : #include "fbcon.h"
83 :
84 : #ifdef FBCONDEBUG
85 : # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
86 : #else
87 : # define DPRINTK(fmt, args...)
88 : #endif
89 :
90 : enum {
91 : FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
92 : FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
93 : FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */
94 : };
95 :
96 1 : static struct display fb_display[MAX_NR_CONSOLES];
97 :
98 1 : static signed char con2fb_map[MAX_NR_CONSOLES];
99 1 : static signed char con2fb_map_boot[MAX_NR_CONSOLES];
100 :
101 1 : static int logo_lines;
102 : /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
103 : enums. */
104 1 : static int logo_shown = FBCON_LOGO_CANSHOW;
105 : /* Software scrollback */
106 1 : static int fbcon_softback_size = 32768;
107 2 : static unsigned long softback_buf, softback_curr;
108 1 : static unsigned long softback_in;
109 2 : static unsigned long softback_top, softback_end;
110 1 : static int softback_lines;
111 : /* console mappings */
112 1 : static int first_fb_vc;
113 1 : static int last_fb_vc = MAX_NR_CONSOLES - 1;
114 1 : static int fbcon_is_default = 1;
115 1 : static int fbcon_has_exited;
116 1 : static int primary_device = -1;
117 1 : static int fbcon_has_console_bind;
118 :
119 : #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
120 1 : static int map_override;
121 :
122 : static inline void fbcon_map_override(void)
123 : {
124 1 : map_override = 1;
125 1 : }
126 : #else
127 : static inline void fbcon_map_override(void)
128 : {
129 : }
130 : #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */
131 :
132 : /* font data */
133 1 : static char fontname[40];
134 :
135 : /* current fb_info */
136 1 : static int info_idx = -1;
137 :
138 : /* console rotation */
139 1 : static int initial_rotation;
140 1 : static int fbcon_has_sysfs;
141 :
142 1 : static const struct consw fb_con;
143 :
144 : #define CM_SOFTBACK (8)
145 :
146 : #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
147 :
148 : static int fbcon_set_origin(struct vc_data *);
149 :
150 : #define CURSOR_DRAW_DELAY (1)
151 :
152 1 : static int vbl_cursor_cnt;
153 1 : static int fbcon_cursor_noblink;
154 :
155 : #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
156 :
157 : /*
158 : * Interface used by the world
159 : */
160 :
161 : static const char *fbcon_startup(void);
162 : static void fbcon_init(struct vc_data *vc, int init);
163 : static void fbcon_deinit(struct vc_data *vc);
164 : static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
165 : int width);
166 : static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
167 : static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
168 : int count, int ypos, int xpos);
169 : static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
170 : static void fbcon_cursor(struct vc_data *vc, int mode);
171 : static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
172 : int count);
173 : static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
174 : int height, int width);
175 : static int fbcon_switch(struct vc_data *vc);
176 : static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
177 : static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
178 : static int fbcon_scrolldelta(struct vc_data *vc, int lines);
179 :
180 : /*
181 : * Internal routines
182 : */
183 : static __inline__ void ywrap_up(struct vc_data *vc, int count);
184 : static __inline__ void ywrap_down(struct vc_data *vc, int count);
185 : static __inline__ void ypan_up(struct vc_data *vc, int count);
186 : static __inline__ void ypan_down(struct vc_data *vc, int count);
187 : static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
188 : int dy, int dx, int height, int width, u_int y_break);
189 : static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
190 : int unit);
191 : static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
192 : int line, int count, int dy);
193 : static void fbcon_modechanged(struct fb_info *info);
194 : static void fbcon_set_all_vcs(struct fb_info *info);
195 : static void fbcon_start(void);
196 : static void fbcon_exit(void);
197 1 : static struct device *fbcon_device;
198 :
199 : #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
200 : static inline void fbcon_set_rotation(struct fb_info *info)
201 : {
202 : struct fbcon_ops *ops = info->fbcon_par;
203 :
204 : if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
205 : ops->p->con_rotate < 4)
206 : ops->rotate = ops->p->con_rotate;
207 : else
208 : ops->rotate = 0;
209 : }
210 :
211 : static void fbcon_rotate(struct fb_info *info, u32 rotate)
212 : {
213 : struct fbcon_ops *ops= info->fbcon_par;
214 : struct fb_info *fb_info;
215 :
216 : if (!ops || ops->currcon == -1)
217 : return;
218 :
219 : fb_info = registered_fb[con2fb_map[ops->currcon]];
220 :
221 : if (info == fb_info) {
222 : struct display *p = &fb_display[ops->currcon];
223 :
224 : if (rotate < 4)
225 : p->con_rotate = rotate;
226 : else
227 : p->con_rotate = 0;
228 :
229 : fbcon_modechanged(info);
230 : }
231 : }
232 :
233 : static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
234 : {
235 : struct fbcon_ops *ops = info->fbcon_par;
236 : struct vc_data *vc;
237 : struct display *p;
238 : int i;
239 :
240 : if (!ops || ops->currcon < 0 || rotate > 3)
241 : return;
242 :
243 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
244 : vc = vc_cons[i].d;
245 : if (!vc || vc->vc_mode != KD_TEXT ||
246 : registered_fb[con2fb_map[i]] != info)
247 : continue;
248 :
249 : p = &fb_display[vc->vc_num];
250 : p->con_rotate = rotate;
251 : }
252 :
253 : fbcon_set_all_vcs(info);
254 : }
255 : #else
256 : static inline void fbcon_set_rotation(struct fb_info *info)
257 : {
258 60 : struct fbcon_ops *ops = info->fbcon_par;
259 :
260 20 : ops->rotate = FB_ROTATE_UR;
261 20 : }
262 :
263 : static void fbcon_rotate(struct fb_info *info, u32 rotate)
264 : {
265 1 : return;
266 : }
267 :
268 : static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
269 : {
270 1 : return;
271 : }
272 : #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
273 :
274 : static int fbcon_get_rotate(struct fb_info *info)
275 : {
276 3 : struct fbcon_ops *ops = info->fbcon_par;
277 :
278 6 : return (ops) ? ops->rotate : 0;
279 : }
280 :
281 : static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
282 : {
283 870 : struct fbcon_ops *ops = info->fbcon_par;
284 :
285 2610 : return (info->state != FBINFO_STATE_RUNNING ||
286 : vc->vc_mode != KD_TEXT || ops->graphics);
287 : }
288 :
289 : static inline int get_color(struct vc_data *vc, struct fb_info *info,
290 : u16 c, int is_fg)
291 : {
292 1266 : int depth = fb_get_color_depth(&info->var, &info->fix);
293 844 : int color = 0;
294 422 :
295 1266 : if (console_blanked) {
296 3376 : unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
297 422 :
298 1266 : c = vc->vc_video_erase_char & charmask;
299 422 : }
300 :
301 844 : if (depth != 1)
302 7596 : color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
303 : : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
304 :
305 422 : switch (depth) {
306 1688 : case 1:
307 : {
308 1266 : int col = mono_col(info);
309 : /* 0 or 1 */
310 2532 : int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
311 2532 : int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
312 :
313 844 : if (console_blanked)
314 422 : fg = bg;
315 :
316 2532 : color = (is_fg) ? fg : bg;
317 422 : break;
318 422 : }
319 1266 : 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 1266 : case 0:
329 422 : color = 0; /* black */
330 422 : break;
331 5908 : case 1 ... 6:
332 844 : color = 2; /* white */
333 844 : break;
334 2954 : case 7 ... 8:
335 1266 : color = 1; /* gray */
336 844 : break;
337 844 : default:
338 844 : color = 3; /* intense white */
339 422 : break;
340 : }
341 422 : break;
342 1688 : 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 : */
348 422 : color &= 7;
349 422 : break;
350 422 : }
351 :
352 422 :
353 844 : return color;
354 : }
355 :
356 : static void fbcon_update_softback(struct vc_data *vc)
357 : {
358 68 : int l = fbcon_softback_size / vc->vc_size_row;
359 :
360 68 : if (l > 5)
361 34 : 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 34 : softback_top = 0;
366 34 : }
367 :
368 : static void fb_flashcursor(struct work_struct *work)
369 : {
370 0 : struct fb_info *info = container_of(work, struct fb_info, queue);
371 0 : struct fbcon_ops *ops = info->fbcon_par;
372 0 : struct display *p;
373 0 : struct vc_data *vc = NULL;
374 0 : int c;
375 0 : int mode;
376 0 :
377 0 : acquire_console_sem();
378 0 : if (ops && ops->currcon != -1)
379 0 : vc = vc_cons[ops->currcon].d;
380 :
381 0 : if (!vc || !CON_IS_VISIBLE(vc) ||
382 : registered_fb[con2fb_map[vc->vc_num]] != info ||
383 : vc->vc_deccm != 1) {
384 0 : release_console_sem();
385 0 : return;
386 : }
387 :
388 0 : p = &fb_display[vc->vc_num];
389 0 : c = scr_readw((u16 *) vc->vc_pos);
390 0 : mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
391 : CM_ERASE : CM_DRAW;
392 0 : ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
393 : get_color(vc, info, c, 0));
394 0 : release_console_sem();
395 0 : }
396 :
397 : static void cursor_timer_handler(unsigned long dev_addr)
398 : {
399 0 : struct fb_info *info = (struct fb_info *) dev_addr;
400 0 : struct fbcon_ops *ops = info->fbcon_par;
401 :
402 0 : schedule_work(&info->queue);
403 0 : mod_timer(&ops->cursor_timer, jiffies + HZ/5);
404 0 : }
405 :
406 : static void fbcon_add_cursor_timer(struct fb_info *info)
407 : {
408 150 : struct fbcon_ops *ops = info->fbcon_par;
409 50 :
410 400 : if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
411 : !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
412 : !fbcon_cursor_noblink) {
413 100 : if (!info->queue.func)
414 350 : INIT_WORK(&info->queue, fb_flashcursor);
415 :
416 100 : init_timer(&ops->cursor_timer);
417 100 : ops->cursor_timer.function = cursor_timer_handler;
418 100 : ops->cursor_timer.expires = jiffies + HZ / 5;
419 100 : ops->cursor_timer.data = (unsigned long ) info;
420 100 : add_timer(&ops->cursor_timer);
421 100 : ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
422 : }
423 100 : }
424 :
425 : static void fbcon_del_cursor_timer(struct fb_info *info)
426 : {
427 150 : struct fbcon_ops *ops = info->fbcon_par;
428 :
429 200 : if (info->queue.func == fb_flashcursor &&
430 : ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
431 100 : del_timer_sync(&ops->cursor_timer);
432 50 : ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
433 : }
434 100 : }
435 :
436 : #ifndef MODULE
437 : static int __init fb_console_setup(char *this_opt)
438 : {
439 1 : char *options;
440 1 : int i, j;
441 1 :
442 5 : if (!this_opt || !*this_opt)
443 2 : return 1;
444 1 :
445 5 : while ((options = strsep(&this_opt, ",")) != NULL) {
446 5 : if (!strncmp(options, "font:", 5))
447 3 : strcpy(fontname, options + 5);
448 1 :
449 4 : if (!strncmp(options, "scrollback:", 11)) {
450 2 : options += 11;
451 3 : if (*options) {
452 3 : fbcon_softback_size = simple_strtoul(options, &options, 0);
453 4 : if (*options == 'k' || *options == 'K') {
454 1 : fbcon_softback_size *= 1024;
455 1 : options++;
456 : }
457 2 : if (*options != ',')
458 1 : return 1;
459 1 : options++;
460 : } else
461 1 : return 1;
462 : }
463 :
464 3 : if (!strncmp(options, "map:", 4)) {
465 1 : options += 4;
466 2 : if (*options) {
467 6 : for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
468 4 : if (!options[j])
469 2 : j = 0;
470 3 : con2fb_map_boot[i] =
471 : (options[j++]-'0') % FB_MAX;
472 : }
473 :
474 2 : fbcon_map_override();
475 : }
476 :
477 2 : return 1;
478 : }
479 :
480 3 : if (!strncmp(options, "vc:", 3)) {
481 1 : options += 3;
482 2 : if (*options)
483 2 : first_fb_vc = simple_strtoul(options, &options, 10) - 1;
484 2 : if (first_fb_vc < 0)
485 1 : first_fb_vc = 0;
486 4 : if (*options++ == '-')
487 2 : last_fb_vc = simple_strtoul(options, &options, 10) - 1;
488 1 : fbcon_is_default = 0;
489 : }
490 :
491 3 : if (!strncmp(options, "rotate:", 7)) {
492 1 : options += 7;
493 2 : if (*options)
494 2 : initial_rotation = simple_strtoul(options, &options, 0);
495 2 : if (initial_rotation > 3)
496 1 : initial_rotation = 0;
497 : }
498 : }
499 1 : return 1;
500 : }
501 :
502 : __setup("fbcon=", fb_console_setup);
503 1 : #endif
504 :
505 : static int search_fb_in_map(int idx)
506 : {
507 54 : int i, retval = 0;
508 27 :
509 135 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
510 108 : if (con2fb_map[i] == idx)
511 54 : retval = 1;
512 : }
513 27 : return retval;
514 : }
515 :
516 : static int search_for_mapped_con(void)
517 : {
518 6 : int i, retval = 0;
519 3 :
520 15 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
521 12 : if (con2fb_map[i] != -1)
522 6 : retval = 1;
523 : }
524 3 : return retval;
525 : }
526 :
527 : static int fbcon_takeover(int show_logo)
528 : {
529 5 : int err, i;
530 5 :
531 10 : if (!num_registered_fb)
532 5 : return -ENODEV;
533 :
534 10 : if (!show_logo)
535 5 : logo_shown = FBCON_LOGO_DONTSHOW;
536 :
537 25 : for (i = first_fb_vc; i <= last_fb_vc; i++)
538 15 : con2fb_map[i] = info_idx;
539 5 :
540 5 : err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
541 : fbcon_is_default);
542 :
543 10 : if (err) {
544 25 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
545 15 : con2fb_map[i] = -1;
546 5 : }
547 5 : info_idx = -1;
548 : } else {
549 5 : fbcon_has_console_bind = 1;
550 : }
551 :
552 10 : return err;
553 : }
554 :
555 : #ifdef MODULE
556 : static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
557 : int cols, int rows, int new_cols, int new_rows)
558 : {
559 : logo_shown = FBCON_LOGO_DONTSHOW;
560 : }
561 : #else
562 : static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
563 : int cols, int rows, int new_cols, int new_rows)
564 : {
565 16 : /* Need to make room for the logo */
566 48 : struct fbcon_ops *ops = info->fbcon_par;
567 48 : int cnt, erase = vc->vc_video_erase_char, step;
568 32 : unsigned short *save = NULL, *r, *q;
569 16 : int logo_height;
570 16 :
571 48 : if (info->flags & FBINFO_MODULE) {
572 32 : logo_shown = FBCON_LOGO_DONTSHOW;
573 32 : return;
574 16 : }
575 16 :
576 16 : /*
577 : * remove underline attribute from erase character
578 : * if black and white framebuffer.
579 : */
580 48 : if (fb_get_color_depth(&info->var, &info->fix) == 1)
581 16 : erase &= ~0x400;
582 16 : logo_height = fb_prepare_logo(info, ops->rotate);
583 16 : logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);
584 16 : q = (unsigned short *) (vc->vc_origin +
585 : vc->vc_size_row * rows);
586 16 : step = logo_lines * cols;
587 80 : for (r = q - logo_lines * cols; r < q; r++)
588 80 : if (scr_readw(r) != vc->vc_video_erase_char)
589 32 : break;
590 64 : if (r != q && new_rows >= rows + logo_lines) {
591 48 : save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
592 32 : if (save) {
593 112 : int i = cols < new_cols ? cols : new_cols;
594 32 : scr_memsetw(save, erase, logo_lines * new_cols * 2);
595 16 : r = q - step;
596 96 : for (cnt = 0; cnt < logo_lines; cnt++, r += i)
597 32 : scr_memcpyw(save + cnt * new_cols, r, 2 * i);
598 48 : r = q;
599 : }
600 : }
601 96 : if (r == q) {
602 : /* We can scroll screen down */
603 48 : r = q - step - cols;
604 144 : for (cnt = rows - logo_lines; cnt > 0; cnt--) {
605 48 : scr_memcpyw(r + step, r, vc->vc_size_row);
606 48 : r -= cols;
607 : }
608 32 : if (!save) {
609 : int lines;
610 32 : if (vc->vc_y + logo_lines >= rows)
611 16 : lines = rows - vc->vc_y - 1;
612 : else
613 16 : lines = logo_lines;
614 16 : vc->vc_y += lines;
615 16 : vc->vc_pos += lines * vc->vc_size_row;
616 : }
617 : }
618 192 : scr_memsetw((unsigned short *) vc->vc_origin,
619 : erase,
620 : vc->vc_size_row * logo_lines);
621 :
622 80 : if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
623 32 : fbcon_clear_margins(vc, 0);
624 16 : update_screen(vc);
625 : }
626 :
627 64 : if (save) {
628 32 : q = (unsigned short *) (vc->vc_origin +
629 : vc->vc_size_row *
630 : rows);
631 32 : scr_memcpyw(q, save, logo_lines * new_cols * 2);
632 32 : vc->vc_y += logo_lines;
633 32 : vc->vc_pos += logo_lines * vc->vc_size_row;
634 32 : kfree(save);
635 : }
636 :
637 64 : if (logo_lines > vc->vc_bottom) {
638 32 : logo_shown = FBCON_LOGO_CANSHOW;
639 32 : printk(KERN_INFO
640 : "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
641 64 : } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
642 32 : logo_shown = FBCON_LOGO_DRAW;
643 32 : vc->vc_top = logo_lines;
644 : }
645 32 : }
646 : #endif /* MODULE */
647 :
648 : #ifdef CONFIG_FB_TILEBLITTING
649 : static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
650 : {
651 : struct fbcon_ops *ops = info->fbcon_par;
652 :
653 : ops->p = &fb_display[vc->vc_num];
654 :
655 : if ((info->flags & FBINFO_MISC_TILEBLITTING))
656 : fbcon_set_tileops(vc, info);
657 : else {
658 : fbcon_set_rotation(info);
659 : fbcon_set_bitops(ops);
660 : }
661 : }
662 :
663 : static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
664 : {
665 : int err = 0;
666 :
667 : if (info->flags & FBINFO_MISC_TILEBLITTING &&
668 : info->tileops->fb_get_tilemax(info) < charcount)
669 : err = 1;
670 :
671 : return err;
672 : }
673 : #else
674 : static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
675 : {
676 60 : struct fbcon_ops *ops = info->fbcon_par;
677 :
678 20 : info->flags &= ~FBINFO_MISC_TILEBLITTING;
679 40 : ops->p = &fb_display[vc->vc_num];
680 40 : fbcon_set_rotation(info);
681 20 : fbcon_set_bitops(ops);
682 20 : }
683 :
684 : static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
685 : {
686 1 : return 0;
687 : }
688 :
689 : #endif /* CONFIG_MISC_TILEBLITTING */
690 :
691 :
692 : static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
693 : int unit, int oldidx)
694 : {
695 8 : struct fbcon_ops *ops = NULL;
696 8 : int err = 0;
697 4 :
698 20 : if (!try_module_get(info->fbops->owner))
699 8 : err = -ENODEV;
700 :
701 32 : if (!err && info->fbops->fb_open &&
702 : info->fbops->fb_open(info, 0))
703 4 : err = -ENODEV;
704 :
705 8 : if (!err) {
706 12 : ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
707 8 : if (!ops)
708 4 : err = -ENOMEM;
709 : }
710 :
711 16 : if (!err) {
712 8 : info->fbcon_par = ops;
713 :
714 16 : if (vc)
715 16 : set_blitting_type(vc, info);
716 : }
717 :
718 24 : if (err) {
719 12 : con2fb_map[unit] = oldidx;
720 24 : module_put(info->fbops->owner);
721 : }
722 :
723 16 : return err;
724 : }
725 :
726 : static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
727 : struct fb_info *newinfo, int unit,
728 : int oldidx, int found)
729 3 : {
730 9 : struct fbcon_ops *ops = oldinfo->fbcon_par;
731 6 : int err = 0, ret;
732 3 :
733 18 : if (oldinfo->fbops->fb_release &&
734 : oldinfo->fbops->fb_release(oldinfo, 0)) {
735 3 : con2fb_map[unit] = oldidx;
736 15 : if (!found && newinfo->fbops->fb_release)
737 3 : newinfo->fbops->fb_release(newinfo, 0);
738 6 : if (!found)
739 6 : module_put(newinfo->fbops->owner);
740 6 : err = -ENODEV;
741 : }
742 :
743 12 : if (!err) {
744 18 : fbcon_del_cursor_timer(oldinfo);
745 3 : kfree(ops->cursor_state.mask);
746 6 : kfree(ops->cursor_data);
747 6 : kfree(ops->fontbuffer);
748 6 : kfree(oldinfo->fbcon_par);
749 3 : oldinfo->fbcon_par = NULL;
750 6 : module_put(oldinfo->fbops->owner);
751 : /*
752 : If oldinfo and newinfo are driving the same hardware,
753 : the fb_release() method of oldinfo may attempt to
754 : restore the hardware state. This will leave the
755 : newinfo in an undefined state. Thus, a call to
756 : fb_set_par() may be needed for the newinfo.
757 : */
758 9 : if (newinfo->fbops->fb_set_par) {
759 3 : ret = newinfo->fbops->fb_set_par(newinfo);
760 :
761 6 : if (ret)
762 3 : printk(KERN_ERR "con2fb_release_oldinfo: "
763 : "detected unhandled fb_set_par error, "
764 : "error code %d\n", ret);
765 : }
766 : }
767 :
768 9 : return err;
769 : }
770 :
771 : static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
772 : int unit, int show_logo)
773 : {
774 45 : struct fbcon_ops *ops = info->fbcon_par;
775 15 : int ret;
776 15 :
777 30 : ops->currcon = fg_console;
778 :
779 75 : if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) {
780 15 : ret = info->fbops->fb_set_par(info);
781 :
782 30 : if (ret)
783 15 : printk(KERN_ERR "con2fb_init_display: detected "
784 : "unhandled fb_set_par error, "
785 : "error code %d\n", ret);
786 : }
787 :
788 15 : ops->flags |= FBCON_FLAGS_INIT;
789 15 : ops->graphics = 0;
790 45 : fbcon_set_disp(info, &info->var, unit);
791 :
792 30 : if (show_logo) {
793 15 : struct vc_data *fg_vc = vc_cons[fg_console].d;
794 15 : struct fb_info *fg_info =
795 : registered_fb[con2fb_map[fg_console]];
796 :
797 120 : fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
798 : fg_vc->vc_rows, fg_vc->vc_cols,
799 : fg_vc->vc_rows);
800 : }
801 :
802 30 : update_screen(vc_cons[fg_console].d);
803 30 : }
804 :
805 : /**
806 : * set_con2fb_map - map console to frame buffer device
807 : * @unit: virtual console number to map
808 : * @newidx: frame buffer index to map virtual console to
809 : * @user: user request
810 : *
811 : * Maps a virtual console @unit to a frame buffer device
812 : * @newidx.
813 : */
814 : static int set_con2fb_map(int unit, int newidx, int user)
815 : {
816 6 : struct vc_data *vc = vc_cons[unit].d;
817 6 : int oldidx = con2fb_map[unit];
818 6 : struct fb_info *info = registered_fb[newidx];
819 6 : struct fb_info *oldinfo = NULL;
820 6 : int found, err = 0;
821 3 :
822 9 : if (oldidx == newidx)
823 6 : return 0;
824 3 :
825 15 : if (!info || fbcon_has_exited)
826 6 : return -EINVAL;
827 :
828 18 : if (!err && !search_for_mapped_con()) {
829 3 : info_idx = newidx;
830 15 : return fbcon_takeover(0);
831 : }
832 :
833 12 : if (oldidx != -1)
834 6 : oldinfo = registered_fb[oldidx];
835 :
836 12 : found = search_fb_in_map(newidx);
837 :
838 3 : acquire_console_sem();
839 3 : con2fb_map[unit] = newidx;
840 6 : if (!err && !found)
841 15 : err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
842 :
843 :
844 : /*
845 : * If old fb is not mapped to any of the consoles,
846 : * fbcon should release it.
847 : */
848 42 : if (!err && oldinfo && !search_fb_in_map(oldidx))
849 12 : err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
850 : found);
851 :
852 24 : if (!err) {
853 72 : int show_logo = (fg_console == 0 && !user &&
854 : logo_shown != FBCON_LOGO_DONTSHOW);
855 :
856 24 : if (!found)
857 36 : fbcon_add_cursor_timer(info);
858 15 : con2fb_map_boot[unit] = newidx;
859 45 : con2fb_init_display(vc, info, unit, show_logo);
860 : }
861 :
862 36 : if (!search_fb_in_map(info_idx))
863 3 : info_idx = newidx;
864 :
865 3 : release_console_sem();
866 3 : return err;
867 : }
868 :
869 : /*
870 : * Low Level Operations
871 : */
872 : /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
873 : static int var_to_display(struct display *disp,
874 : struct fb_var_screeninfo *var,
875 : struct fb_info *info)
876 : {
877 21 : disp->xres_virtual = var->xres_virtual;
878 21 : disp->yres_virtual = var->yres_virtual;
879 21 : disp->bits_per_pixel = var->bits_per_pixel;
880 21 : disp->grayscale = var->grayscale;
881 21 : disp->nonstd = var->nonstd;
882 21 : disp->accel_flags = var->accel_flags;
883 21 : disp->height = var->height;
884 21 : disp->width = var->width;
885 21 : disp->red = var->red;
886 21 : disp->green = var->green;
887 21 : disp->blue = var->blue;
888 21 : disp->transp = var->transp;
889 21 : disp->rotate = var->rotate;
890 21 : disp->mode = fb_match_mode(var, &info->modelist);
891 63 : if (disp->mode == NULL)
892 : /* This should not happen */
893 21 : return -EINVAL;
894 21 : return 0;
895 : }
896 :
897 : static void display_to_var(struct fb_var_screeninfo *var,
898 : struct display *disp)
899 : {
900 3 : fb_videomode_to_var(var, disp->mode);
901 3 : var->xres_virtual = disp->xres_virtual;
902 3 : var->yres_virtual = disp->yres_virtual;
903 3 : var->bits_per_pixel = disp->bits_per_pixel;
904 3 : var->grayscale = disp->grayscale;
905 3 : var->nonstd = disp->nonstd;
906 3 : var->accel_flags = disp->accel_flags;
907 3 : var->height = disp->height;
908 3 : var->width = disp->width;
909 3 : var->red = disp->red;
910 3 : var->green = disp->green;
911 3 : var->blue = disp->blue;
912 3 : var->transp = disp->transp;
913 3 : var->rotate = disp->rotate;
914 3 : }
915 :
916 : static const char *fbcon_startup(void)
917 : {
918 2 : const char *display_desc = "frame buffer device";
919 2 : struct display *p = &fb_display[fg_console];
920 2 : struct vc_data *vc = vc_cons[fg_console].d;
921 2 : const struct font_desc *font = NULL;
922 1 : struct module *owner;
923 2 : struct fb_info *info = NULL;
924 1 : struct fbcon_ops *ops;
925 1 : int rows, cols;
926 1 :
927 1 : /*
928 1 : * If num_registered_fb is zero, this is a call for the dummy part.
929 1 : * The frame buffer devices weren't initialized yet.
930 1 : */
931 5 : if (!num_registered_fb || info_idx == -1)
932 2 : return display_desc;
933 1 : /*
934 1 : * Instead of blindly using registered_fb[0], we use info_idx, set by
935 1 : * fb_console_init();
936 : */
937 1 : info = registered_fb[info_idx];
938 2 : if (!info)
939 1 : return NULL;
940 :
941 1 : owner = info->fbops->owner;
942 4 : if (!try_module_get(owner))
943 1 : return NULL;
944 6 : if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
945 2 : module_put(owner);
946 1 : return NULL;
947 : }
948 :
949 3 : ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
950 2 : if (!ops) {
951 2 : module_put(owner);
952 1 : return NULL;
953 : }
954 :
955 1 : ops->currcon = -1;
956 1 : ops->graphics = 1;
957 1 : ops->cur_rotate = -1;
958 1 : info->fbcon_par = ops;
959 1 : p->con_rotate = initial_rotation;
960 2 : set_blitting_type(vc, info);
961 :
962 2 : if (info->fix.type != FB_TYPE_TEXT) {
963 2 : if (fbcon_softback_size) {
964 2 : if (!softback_buf) {
965 3 : softback_buf =
966 : (unsigned long)
967 : kmalloc(fbcon_softback_size,
968 : GFP_KERNEL);
969 2 : if (!softback_buf) {
970 1 : fbcon_softback_size = 0;
971 1 : softback_top = 0;
972 : }
973 : }
974 : } else {
975 2 : if (softback_buf) {
976 1 : kfree((void *) softback_buf);
977 1 : softback_buf = 0;
978 1 : softback_top = 0;
979 : }
980 : }
981 4 : if (softback_buf)
982 6 : softback_in = softback_top = softback_curr =
983 : softback_buf;
984 2 : softback_lines = 0;
985 : }
986 :
987 : /* Setup default font */
988 6 : if (!p->fontdata) {
989 10 : if (!fontname[0] || !(font = find_font(fontname)))
990 4 : font = get_default_font(info->var.xres,
991 : info->var.yres,
992 : info->pixmap.blit_x,
993 : info->pixmap.blit_y);
994 4 : vc->vc_font.width = font->width;
995 4 : vc->vc_font.height = font->height;
996 8 : vc->vc_font.data = (void *)(p->fontdata = font->data);
997 2 : vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
998 : }
999 :
1000 20 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1001 20 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1002 2 : cols /= vc->vc_font.width;
1003 2 : rows /= vc->vc_font.height;
1004 2 : vc_resize(vc, cols, rows);
1005 :
1006 : DPRINTK("mode: %s\n", info->fix.id);
1007 : DPRINTK("visual: %d\n", info->fix.visual);
1008 : DPRINTK("res: %dx%d-%d\n", info->var.xres,
1009 : info->var.yres,
1010 : info->var.bits_per_pixel);
1011 :
1012 6 : fbcon_add_cursor_timer(info);
1013 1 : fbcon_has_exited = 0;
1014 1 : return display_desc;
1015 : }
1016 :
1017 : static void fbcon_init(struct vc_data *vc, int init)
1018 : {
1019 3 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1020 1 : struct fbcon_ops *ops;
1021 2 : struct vc_data **default_mode = vc->vc_display_fg;
1022 2 : struct vc_data *svc = *default_mode;
1023 3 : struct display *t, *p = &fb_display[vc->vc_num];
1024 3 : int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
1025 1 : int cap, ret;
1026 1 :
1027 5 : if (info_idx == -1 || info == NULL)
1028 2 : return;
1029 1 :
1030 2 : cap = info->flags;
1031 1 :
1032 7 : if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1033 1 : (info->fix.type == FB_TYPE_TEXT))
1034 2 : logo = 0;
1035 1 :
1036 5 : if (var_to_display(p, &info->var, info))
1037 2 : return;
1038 1 :
1039 4 : if (!info->fbcon_par)
1040 7 : con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
1041 1 :
1042 1 : /* If we are not the first console on this
1043 1 : fb, copy the font from that console */
1044 2 : t = &fb_display[fg_console];
1045 6 : if (!p->fontdata) {
1046 6 : if (t->fontdata) {
1047 2 : struct vc_data *fvc = vc_cons[fg_console].d;
1048 :
1049 6 : vc->vc_font.data = (void *)(p->fontdata =
1050 : fvc->vc_font.data);
1051 2 : vc->vc_font.width = fvc->vc_font.width;
1052 2 : vc->vc_font.height = fvc->vc_font.height;
1053 2 : p->userfont = t->userfont;
1054 :
1055 4 : if (p->userfont)
1056 2 : REFCOUNT(p->fontdata)++;
1057 : } else {
1058 2 : const struct font_desc *font = NULL;
1059 :
1060 10 : if (!fontname[0] || !(font = find_font(fontname)))
1061 4 : font = get_default_font(info->var.xres,
1062 : info->var.yres,
1063 : info->pixmap.blit_x,
1064 : info->pixmap.blit_y);
1065 4 : vc->vc_font.width = font->width;
1066 4 : vc->vc_font.height = font->height;
1067 8 : vc->vc_font.data = (void *)(p->fontdata = font->data);
1068 2 : vc->vc_font.charcount = 256; /* FIXME Need to
1069 : support more fonts */
1070 : }
1071 : }
1072 :
1073 4 : if (p->userfont)
1074 2 : charcnt = FNTCHARCNT(p->fontdata);
1075 :
1076 4 : vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1077 12 : vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1078 4 : if (charcnt == 256) {
1079 2 : vc->vc_hi_font_mask = 0;
1080 : } else {
1081 2 : vc->vc_hi_font_mask = 0x100;
1082 4 : if (vc->vc_can_do_color)
1083 4 : vc->vc_complement_mask <<= 1;
1084 : }
1085 :
1086 4 : if (!*svc->vc_uni_pagedir_loc)
1087 2 : con_set_default_unimap(svc);
1088 4 : if (!*vc->vc_uni_pagedir_loc)
1089 2 : con_copy_unimap(vc, svc);
1090 :
1091 4 : ops = info->fbcon_par;
1092 2 : p->con_rotate = initial_rotation;
1093 4 : set_blitting_type(vc, info);
1094 :
1095 2 : cols = vc->vc_cols;
1096 2 : rows = vc->vc_rows;
1097 10 : new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1098 10 : new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1099 1 : new_cols /= vc->vc_font.width;
1100 1 : new_rows /= vc->vc_font.height;
1101 :
1102 : /*
1103 : * We must always set the mode. The mode of the previous console
1104 : * driver could be in the same resolution but we are using different
1105 : * hardware so we have to initialize the hardware.
1106 : *
1107 : * We need to do it in fbcon_init() to prevent screen corruption.
1108 : */
1109 5 : if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
1110 5 : if (info->fbops->fb_set_par &&
1111 : !(ops->flags & FBCON_FLAGS_INIT)) {
1112 1 : ret = info->fbops->fb_set_par(info);
1113 :
1114 2 : if (ret)
1115 1 : printk(KERN_ERR "fbcon_init: detected "
1116 : "unhandled fb_set_par error, "
1117 : "error code %d\n", ret);
1118 : }
1119 :
1120 1 : ops->flags |= FBCON_FLAGS_INIT;
1121 : }
1122 :
1123 1 : ops->graphics = 0;
1124 :
1125 2 : if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1126 : !(cap & FBINFO_HWACCEL_DISABLED))
1127 1 : p->scrollmode = SCROLL_MOVE;
1128 : else /* default to something safe */
1129 1 : p->scrollmode = SCROLL_REDRAW;
1130 :
1131 : /*
1132 : * ++guenther: console.c:vc_allocate() relies on initializing
1133 : * vc_{cols,rows}, but we must not set those if we are only
1134 : * resizing the console.
1135 : */
1136 2 : if (init) {
1137 1 : vc->vc_cols = new_cols;
1138 1 : vc->vc_rows = new_rows;
1139 : } else
1140 1 : vc_resize(vc, new_cols, new_rows);
1141 :
1142 2 : if (logo)
1143 4 : fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1144 :
1145 8 : if (vc == svc && softback_buf)
1146 4 : fbcon_update_softback(vc);
1147 :
1148 18 : if (ops->rotate_font && ops->rotate_font(info, vc)) {
1149 3 : ops->rotate = FB_ROTATE_UR;
1150 6 : set_blitting_type(vc, info);
1151 : }
1152 :
1153 4 : ops->p = &fb_display[fg_console];
1154 4 : }
1155 :
1156 : static void fbcon_free_font(struct display *p)
1157 : {
1158 8 : if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
1159 1 : kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1160 1 : p->fontdata = NULL;
1161 1 : p->userfont = 0;
1162 1 : }
1163 :
1164 : static void fbcon_deinit(struct vc_data *vc)
1165 : {
1166 3 : struct display *p = &fb_display[vc->vc_num];
1167 1 : struct fb_info *info;
1168 1 : struct fbcon_ops *ops;
1169 1 : int idx;
1170 1 :
1171 2 : fbcon_free_font(p);
1172 2 : idx = con2fb_map[vc->vc_num];
1173 :
1174 2 : if (idx == -1)
1175 1 : goto finished;
1176 :
1177 1 : info = registered_fb[idx];
1178 :
1179 2 : if (!info)
1180 1 : goto finished;
1181 :
1182 2 : ops = info->fbcon_par;
1183 :
1184 2 : if (!ops)
1185 1 : goto finished;
1186 :
1187 2 : if (CON_IS_VISIBLE(vc))
1188 3 : fbcon_del_cursor_timer(info);
1189 :
1190 2 : ops->flags &= ~FBCON_FLAGS_INIT;
1191 2 : finished:
1192 :
1193 6 : if (!con_is_bound(&fb_con))
1194 6 : fbcon_exit();
1195 :
1196 3 : return;
1197 : }
1198 :
1199 : /* ====================================================================== */
1200 :
1201 : /* fbcon_XXX routines - interface used by the world
1202 : *
1203 : * This system is now divided into two levels because of complications
1204 : * caused by hardware scrolling. Top level functions:
1205 : *
1206 : * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1207 : *
1208 : * handles y values in range [0, scr_height-1] that correspond to real
1209 : * screen positions. y_wrap shift means that first line of bitmap may be
1210 : * anywhere on this display. These functions convert lineoffsets to
1211 : * bitmap offsets and deal with the wrap-around case by splitting blits.
1212 : *
1213 : * fbcon_bmove_physical_8() -- These functions fast implementations
1214 : * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1215 : * fbcon_putc_physical_8() -- (font width != 8) may be added later
1216 : *
1217 : * WARNING:
1218 : *
1219 : * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1220 : * Implies should only really hardware scroll in rows. Only reason for
1221 : * restriction is simplicity & efficiency at the moment.
1222 : */
1223 :
1224 : static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1225 : int width)
1226 24 : {
1227 72 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1228 72 : struct fbcon_ops *ops = info->fbcon_par;
1229 24 :
1230 72 : struct display *p = &fb_display[vc->vc_num];
1231 24 : u_int y_break;
1232 24 :
1233 120 : if (fbcon_is_inactive(vc, info))
1234 48 : return;
1235 :
1236 96 : if (!height || !width)
1237 24 : return;
1238 :
1239 96 : if (sy < vc->vc_top && vc->vc_top == logo_lines)
1240 24 : vc->vc_top = 0;
1241 :
1242 : /* Split blits that cross physical y_wrap boundary */
1243 :
1244 48 : y_break = p->vrows - p->yscroll;
1245 96 : if (sy < y_break && sy + height - 1 >= y_break) {
1246 24 : u_int b = y_break - sy;
1247 72 : ops->clear(vc, info, real_y(p, sy), sx, b, width);
1248 72 : ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1249 : width);
1250 : } else
1251 72 : ops->clear(vc, info, real_y(p, sy), sx, height, width);
1252 48 : }
1253 :
1254 : static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1255 : int count, int ypos, int xpos)
1256 : {
1257 429 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1258 429 : struct display *p = &fb_display[vc->vc_num];
1259 429 : struct fbcon_ops *ops = info->fbcon_par;
1260 143 :
1261 715 : if (!fbcon_is_inactive(vc, info))
1262 1430 : ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1263 143 : get_color(vc, info, scr_readw(s), 1),
1264 : get_color(vc, info, scr_readw(s), 0));
1265 286 : }
1266 :
1267 : static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1268 : {
1269 1 : unsigned short chr;
1270 :
1271 1 : scr_writew(c, &chr);
1272 3 : fbcon_putcs(vc, &chr, 1, ypos, xpos);
1273 1 : }
1274 :
1275 : static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1276 : {
1277 132 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1278 132 : struct fbcon_ops *ops = info->fbcon_par;
1279 44 :
1280 176 : if (!fbcon_is_inactive(vc, info))
1281 44 : ops->clear_margins(vc, info, bottom_only);
1282 44 : }
1283 :
1284 : static void fbcon_cursor(struct vc_data *vc, int mode)
1285 : {
1286 102 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1287 102 : struct fbcon_ops *ops = info->fbcon_par;
1288 34 : int y;
1289 102 : int c = scr_readw((u16 *) vc->vc_pos);
1290 34 :
1291 238 : if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1292 68 : return;
1293 :
1294 68 : if (vc->vc_cursor_type & 0x10)
1295 102 : fbcon_del_cursor_timer(info);
1296 : else
1297 102 : fbcon_add_cursor_timer(info);
1298 :
1299 68 : ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1300 136 : if (mode & CM_SOFTBACK) {
1301 68 : mode &= ~CM_SOFTBACK;
1302 68 : y = softback_lines;
1303 : } else {
1304 136 : if (softback_lines)
1305 104 : fbcon_set_origin(vc);
1306 102 : y = 0;
1307 : }
1308 :
1309 442 : ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1310 : get_color(vc, info, c, 0));
1311 34 : vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1312 34 : }
1313 :
1314 1 : static int scrollback_phys_max = 0;
1315 1 : static int scrollback_max = 0;
1316 1 : static int scrollback_current = 0;
1317 :
1318 : static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1319 : int unit)
1320 : {
1321 16 : struct display *p, *t;
1322 16 : struct vc_data **default_mode, *vc;
1323 16 : struct vc_data *svc;
1324 48 : struct fbcon_ops *ops = info->fbcon_par;
1325 32 : int rows, cols, charcnt = 256;
1326 16 :
1327 32 : p = &fb_display[unit];
1328 16 :
1329 80 : if (var_to_display(p, var, info))
1330 32 : return;
1331 16 :
1332 32 : vc = vc_cons[unit].d;
1333 16 :
1334 48 : if (!vc)
1335 32 : return;
1336 16 :
1337 16 : default_mode = vc->vc_display_fg;
1338 16 : svc = *default_mode;
1339 32 : t = &fb_display[svc->vc_num];
1340 :
1341 32 : if (!vc->vc_font.data) {
1342 48 : vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1343 16 : vc->vc_font.width = (*default_mode)->vc_font.width;
1344 16 : vc->vc_font.height = (*default_mode)->vc_font.height;
1345 16 : p->userfont = t->userfont;
1346 32 : if (p->userfont)
1347 16 : REFCOUNT(p->fontdata)++;
1348 : }
1349 32 : if (p->userfont)
1350 16 : charcnt = FNTCHARCNT(p->fontdata);
1351 :
1352 16 : var->activate = FB_ACTIVATE_NOW;
1353 16 : info->var.activate = var->activate;
1354 16 : var->yoffset = info->var.yoffset;
1355 16 : var->xoffset = info->var.xoffset;
1356 16 : fb_set_var(info, var);
1357 16 : ops->var = info->var;
1358 32 : vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1359 96 : vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1360 32 : if (charcnt == 256) {
1361 16 : vc->vc_hi_font_mask = 0;
1362 : } else {
1363 16 : vc->vc_hi_font_mask = 0x100;
1364 32 : if (vc->vc_can_do_color)
1365 32 : vc->vc_complement_mask <<= 1;
1366 : }
1367 :
1368 32 : if (!*svc->vc_uni_pagedir_loc)
1369 16 : con_set_default_unimap(svc);
1370 32 : if (!*vc->vc_uni_pagedir_loc)
1371 16 : con_copy_unimap(vc, svc);
1372 :
1373 160 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1374 160 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1375 16 : cols /= vc->vc_font.width;
1376 16 : rows /= vc->vc_font.height;
1377 16 : vc_resize(vc, cols, rows);
1378 :
1379 32 : if (CON_IS_VISIBLE(vc)) {
1380 16 : update_screen(vc);
1381 32 : if (softback_buf)
1382 32 : fbcon_update_softback(vc);
1383 : }
1384 32 : }
1385 :
1386 : static __inline__ void ywrap_up(struct vc_data *vc, int count)
1387 : {
1388 9 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1389 9 : struct fbcon_ops *ops = info->fbcon_par;
1390 9 : struct display *p = &fb_display[vc->vc_num];
1391 :
1392 6 : p->yscroll += count;
1393 9 : if (p->yscroll >= p->vrows) /* Deal with wrap */
1394 9 : p->yscroll -= p->vrows;
1395 3 : ops->var.xoffset = 0;
1396 6 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1397 3 : ops->var.vmode |= FB_VMODE_YWRAP;
1398 3 : ops->update_start(info);
1399 3 : scrollback_max += count;
1400 6 : if (scrollback_max > scrollback_phys_max)
1401 3 : scrollback_max = scrollback_phys_max;
1402 3 : scrollback_current = 0;
1403 3 : }
1404 :
1405 : static __inline__ void ywrap_down(struct vc_data *vc, int count)
1406 : {
1407 6 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1408 6 : struct fbcon_ops *ops = info->fbcon_par;
1409 6 : struct display *p = &fb_display[vc->vc_num];
1410 :
1411 4 : p->yscroll -= count;
1412 6 : if (p->yscroll < 0) /* Deal with wrap */
1413 6 : p->yscroll += p->vrows;
1414 2 : ops->var.xoffset = 0;
1415 4 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1416 2 : ops->var.vmode |= FB_VMODE_YWRAP;
1417 2 : ops->update_start(info);
1418 2 : scrollback_max -= count;
1419 4 : if (scrollback_max < 0)
1420 2 : scrollback_max = 0;
1421 2 : scrollback_current = 0;
1422 2 : }
1423 :
1424 : static __inline__ void ypan_up(struct vc_data *vc, int count)
1425 : {
1426 9 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1427 9 : struct display *p = &fb_display[vc->vc_num];
1428 9 : struct fbcon_ops *ops = info->fbcon_par;
1429 :
1430 6 : p->yscroll += count;
1431 12 : if (p->yscroll > p->vrows - vc->vc_rows) {
1432 12 : ops->bmove(vc, info, p->vrows - vc->vc_rows,
1433 : 0, 0, 0, vc->vc_rows, vc->vc_cols);
1434 12 : p->yscroll -= p->vrows - vc->vc_rows;
1435 : }
1436 :
1437 3 : ops->var.xoffset = 0;
1438 6 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1439 3 : ops->var.vmode &= ~FB_VMODE_YWRAP;
1440 3 : ops->update_start(info);
1441 6 : fbcon_clear_margins(vc, 1);
1442 3 : scrollback_max += count;
1443 6 : if (scrollback_max > scrollback_phys_max)
1444 3 : scrollback_max = scrollback_phys_max;
1445 3 : scrollback_current = 0;
1446 3 : }
1447 :
1448 : static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1449 : {
1450 9 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1451 9 : struct fbcon_ops *ops = info->fbcon_par;
1452 9 : struct display *p = &fb_display[vc->vc_num];
1453 :
1454 6 : p->yscroll += count;
1455 :
1456 12 : if (p->yscroll > p->vrows - vc->vc_rows) {
1457 12 : p->yscroll -= p->vrows - vc->vc_rows;
1458 6 : fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1459 : }
1460 :
1461 6 : ops->var.xoffset = 0;
1462 12 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1463 6 : ops->var.vmode &= ~FB_VMODE_YWRAP;
1464 6 : ops->update_start(info);
1465 12 : fbcon_clear_margins(vc, 1);
1466 3 : scrollback_max += count;
1467 6 : if (scrollback_max > scrollback_phys_max)
1468 3 : scrollback_max = scrollback_phys_max;
1469 3 : scrollback_current = 0;
1470 3 : }
1471 :
1472 : static __inline__ void ypan_down(struct vc_data *vc, int count)
1473 : {
1474 6 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1475 6 : struct display *p = &fb_display[vc->vc_num];
1476 6 : struct fbcon_ops *ops = info->fbcon_par;
1477 :
1478 4 : p->yscroll -= count;
1479 6 : if (p->yscroll < 0) {
1480 8 : ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1481 : 0, vc->vc_rows, vc->vc_cols);
1482 8 : p->yscroll += p->vrows - vc->vc_rows;
1483 : }
1484 :
1485 2 : ops->var.xoffset = 0;
1486 4 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1487 2 : ops->var.vmode &= ~FB_VMODE_YWRAP;
1488 2 : ops->update_start(info);
1489 4 : fbcon_clear_margins(vc, 1);
1490 2 : scrollback_max -= count;
1491 4 : if (scrollback_max < 0)
1492 2 : scrollback_max = 0;
1493 2 : scrollback_current = 0;
1494 2 : }
1495 :
1496 : static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1497 : {
1498 6 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1499 6 : struct fbcon_ops *ops = info->fbcon_par;
1500 6 : struct display *p = &fb_display[vc->vc_num];
1501 :
1502 4 : p->yscroll -= count;
1503 :
1504 6 : if (p->yscroll < 0) {
1505 8 : p->yscroll += p->vrows - vc->vc_rows;
1506 4 : fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1507 : }
1508 :
1509 4 : ops->var.xoffset = 0;
1510 8 : ops->var.yoffset = p->yscroll * vc->vc_font.height;
1511 4 : ops->var.vmode &= ~FB_VMODE_YWRAP;
1512 4 : ops->update_start(info);
1513 8 : fbcon_clear_margins(vc, 1);
1514 2 : scrollback_max -= count;
1515 4 : if (scrollback_max < 0)
1516 2 : scrollback_max = 0;
1517 2 : scrollback_current = 0;
1518 2 : }
1519 :
1520 : static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1521 : long delta)
1522 14 : {
1523 42 : int count = vc->vc_rows;
1524 14 : unsigned short *d, *s;
1525 14 : unsigned long n;
1526 28 : int line = 0;
1527 14 :
1528 28 : d = (u16 *) softback_curr;
1529 42 : if (d == (u16 *) softback_in)
1530 42 : d = (u16 *) vc->vc_origin;
1531 42 : n = softback_curr + delta * vc->vc_size_row;
1532 28 : softback_lines -= delta;
1533 28 : if (delta < 0) {
1534 56 : if (softback_curr < softback_top && n < softback_buf) {
1535 14 : n += softback_end - softback_buf;
1536 28 : if (n < softback_top) {
1537 28 : softback_lines -=
1538 : (softback_top - n) / vc->vc_size_row;
1539 14 : n = softback_top;
1540 : }
1541 56 : } else if (softback_curr >= softback_top
1542 : && n < softback_top) {
1543 28 : softback_lines -=
1544 : (softback_top - n) / vc->vc_size_row;
1545 14 : n = softback_top;
1546 : }
1547 : } else {
1548 56 : if (softback_curr > softback_in && n >= softback_end) {
1549 14 : n += softback_buf - softback_end;
1550 28 : if (n > softback_in) {
1551 14 : n = softback_in;
1552 14 : softback_lines = 0;
1553 : }
1554 56 : } else if (softback_curr <= softback_in && n > softback_in) {
1555 14 : n = softback_in;
1556 14 : softback_lines = 0;
1557 : }
1558 : }
1559 28 : if (n == softback_curr)
1560 14 : return;
1561 14 : softback_curr = n;
1562 14 : s = (u16 *) softback_curr;
1563 28 : if (s == (u16 *) softback_in)
1564 28 : s = (u16 *) vc->vc_origin;
1565 70 : while (count--) {
1566 14 : unsigned short *start;
1567 14 : unsigned short *le;
1568 : unsigned short c;
1569 14 : int x = 0;
1570 14 : unsigned short attr = 1;
1571 :
1572 28 : start = s;
1573 28 : le = advance_row(s, 1);
1574 14 : do {
1575 14 : c = scr_readw(s);
1576 28 : if (attr != (c & 0xff00)) {
1577 14 : attr = c & 0xff00;
1578 28 : if (s > start) {
1579 42 : fbcon_putcs(vc, start, s - start,
1580 : line, x);
1581 14 : x += s - start;
1582 14 : start = s;
1583 : }
1584 : }
1585 56 : if (c == scr_readw(d)) {
1586 56 : if (s > start) {
1587 84 : fbcon_putcs(vc, start, s - start,
1588 : line, x);
1589 14 : x += s - start + 1;
1590 14 : start = s + 1;
1591 : } else {
1592 28 : x++;
1593 28 : start++;
1594 : }
1595 : }
1596 42 : s++;
1597 42 : d++;
1598 84 : } while (s < le);
1599 84 : if (s > start)
1600 168 : fbcon_putcs(vc, start, s - start, line, x);
1601 56 : line++;
1602 112 : if (d == (u16 *) softback_end)
1603 56 : d = (u16 *) softback_buf;
1604 112 : if (d == (u16 *) softback_in)
1605 112 : d = (u16 *) vc->vc_origin;
1606 112 : if (s == (u16 *) softback_end)
1607 56 : s = (u16 *) softback_buf;
1608 112 : if (s == (u16 *) softback_in)
1609 112 : s = (u16 *) vc->vc_origin;
1610 : }
1611 : }
1612 :
1613 56 : static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1614 : int line, int count, int dy)
1615 : {
1616 26 : unsigned short *s = (unsigned short *)
1617 13 : (vc->vc_origin + vc->vc_size_row * line);
1618 13 :
1619 78 : while (count--) {
1620 39 : unsigned short *start = s;
1621 52 : unsigned short *le = advance_row(s, 1);
1622 13 : unsigned short c;
1623 13 : int x = 0;
1624 13 : unsigned short attr = 1;
1625 13 :
1626 13 : do {
1627 13 : c = scr_readw(s);
1628 26 : if (attr != (c & 0xff00)) {
1629 13 : attr = c & 0xff00;
1630 26 : if (s > start) {
1631 39 : fbcon_putcs(vc, start, s - start,
1632 : dy, x);
1633 13 : x += s - start;
1634 13 : start = s;
1635 : }
1636 : }
1637 26 : console_conditional_schedule();
1638 26 : s++;
1639 52 : } while (s < le);
1640 52 : if (s > start)
1641 104 : fbcon_putcs(vc, start, s - start, dy, x);
1642 39 : console_conditional_schedule();
1643 39 : dy++;
1644 : }
1645 39 : }
1646 :
1647 : static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1648 : struct display *p, int line, int count, int ycount)
1649 : {
1650 6 : int offset = ycount * vc->vc_cols;
1651 6 : unsigned short *d = (unsigned short *)
1652 3 : (vc->vc_origin + vc->vc_size_row * line);
1653 6 : unsigned short *s = d + offset;
1654 9 : struct fbcon_ops *ops = info->fbcon_par;
1655 3 :
1656 18 : while (count--) {
1657 9 : unsigned short *start = s;
1658 12 : unsigned short *le = advance_row(s, 1);
1659 : unsigned short c;
1660 3 : int x = 0;
1661 3 :
1662 : do {
1663 6 : c = scr_readw(s);
1664 :
1665 6 : if (c == scr_readw(d)) {
1666 6 : if (s > start) {
1667 3 : ops->bmove(vc, info, line + ycount, x,
1668 : line, x, 1, s-start);
1669 3 : x += s - start + 1;
1670 3 : start = s + 1;
1671 : } else {
1672 3 : x++;
1673 3 : start++;
1674 : }
1675 : }
1676 :
1677 3 : scr_writew(c, d);
1678 3 : console_conditional_schedule();
1679 3 : s++;
1680 3 : d++;
1681 6 : } while (s < le);
1682 6 : if (s > start)
1683 6 : ops->bmove(vc, info, line + ycount, x, line, x, 1,
1684 : s-start);
1685 3 : console_conditional_schedule();
1686 6 : if (ycount > 0)
1687 3 : line++;
1688 : else {
1689 3 : line--;
1690 : /* NOTE: We subtract two lines from these pointers */
1691 6 : s -= vc->vc_size_row;
1692 6 : d -= vc->vc_size_row;
1693 : }
1694 3 : }
1695 : }
1696 :
1697 : static void fbcon_redraw(struct vc_data *vc, struct display *p,
1698 : int line, int count, int offset)
1699 : {
1700 6 : unsigned short *d = (unsigned short *)
1701 3 : (vc->vc_origin + vc->vc_size_row * line);
1702 6 : unsigned short *s = d + offset;
1703 3 :
1704 18 : while (count--) {
1705 9 : unsigned short *start = s;
1706 12 : unsigned short *le = advance_row(s, 1);
1707 3 : unsigned short c;
1708 3 : int x = 0;
1709 3 : unsigned short attr = 1;
1710 3 :
1711 3 : do {
1712 3 : c = scr_readw(s);
1713 6 : if (attr != (c & 0xff00)) {
1714 3 : attr = c & 0xff00;
1715 6 : if (s > start) {
1716 9 : fbcon_putcs(vc, start, s - start,
1717 : line, x);
1718 3 : x += s - start;
1719 3 : start = s;
1720 : }
1721 : }
1722 12 : if (c == scr_readw(d)) {
1723 12 : if (s > start) {
1724 18 : fbcon_putcs(vc, start, s - start,
1725 : line, x);
1726 3 : x += s - start + 1;
1727 3 : start = s + 1;
1728 : } else {
1729 6 : x++;
1730 6 : start++;
1731 : }
1732 : }
1733 9 : scr_writew(c, d);
1734 9 : console_conditional_schedule();
1735 9 : s++;
1736 9 : d++;
1737 18 : } while (s < le);
1738 18 : if (s > start)
1739 36 : fbcon_putcs(vc, start, s - start, line, x);
1740 12 : console_conditional_schedule();
1741 24 : if (offset > 0)
1742 12 : line++;
1743 : else {
1744 12 : line--;
1745 : /* NOTE: We subtract two lines from these pointers */
1746 24 : s -= vc->vc_size_row;
1747 24 : d -= vc->vc_size_row;
1748 : }
1749 12 : }
1750 : }
1751 :
1752 : static inline void fbcon_softback_note(struct vc_data *vc, int t,
1753 : int count)
1754 1 : {
1755 : unsigned short *p;
1756 :
1757 3 : if (vc->vc_num != fg_console)
1758 1 : return;
1759 1 : p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1760 :
1761 3 : while (count) {
1762 3 : scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1763 2 : count--;
1764 2 : p = advance_row(p, 1);
1765 2 : softback_in += vc->vc_size_row;
1766 2 : if (softback_in == softback_end)
1767 1 : softback_in = softback_buf;
1768 2 : if (softback_in == softback_top) {
1769 2 : softback_top += vc->vc_size_row;
1770 2 : if (softback_top == softback_end)
1771 1 : softback_top = softback_buf;
1772 : }
1773 : }
1774 1 : softback_curr = softback_in;
1775 1 : }
1776 :
1777 : static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1778 1 : int count)
1779 1 : {
1780 3 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1781 3 : struct display *p = &fb_display[vc->vc_num];
1782 2 : int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1783 :
1784 4 : if (fbcon_is_inactive(vc, info))
1785 1 : return -EINVAL;
1786 :
1787 3 : fbcon_cursor(vc, CM_ERASE);
1788 :
1789 : /*
1790 : * ++Geert: Only use ywrap/ypan if the console is in text mode
1791 : * ++Andrew: Only use ypan on hardware text mode when scrolling the
1792 : * whole screen (prevents flicker).
1793 : */
1794 :
1795 1 : switch (dir) {
1796 4 : case SM_UP:
1797 2 : if (count > vc->vc_rows) /* Maximum realistic size */
1798 2 : count = vc->vc_rows;
1799 2 : if (softback_top)
1800 3 : fbcon_softback_note(vc, t, count);
1801 4 : if (logo_shown >= 0)
1802 2 : goto redraw_up;
1803 2 : switch (p->scrollmode) {
1804 10 : case SCROLL_MOVE:
1805 4 : fbcon_redraw_blit(vc, info, p, t, b - t - count,
1806 : count);
1807 5 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1808 3 : scr_memsetw((unsigned short *) (vc->vc_origin +
1809 : vc->vc_size_row *
1810 : (b - count)),
1811 : vc->vc_video_erase_char,
1812 : vc->vc_size_row * count);
1813 1 : return 1;
1814 2 : break;
1815 :
1816 8 : case SCROLL_WRAP_MOVE:
1817 4 : if (b - t - count > 3 * vc->vc_rows >> 2) {
1818 4 : if (t > 0)
1819 8 : fbcon_bmove(vc, 0, 0, count, 0, t,
1820 : vc->vc_cols);
1821 6 : ywrap_up(vc, count);
1822 2 : if (vc->vc_rows - b > 0)
1823 4 : fbcon_bmove(vc, b - count, 0, b, 0,
1824 : vc->vc_rows - b,
1825 : vc->vc_cols);
1826 4 : } else if (info->flags & FBINFO_READS_FAST)
1827 8 : fbcon_bmove(vc, t + count, 0, t, 0,
1828 : b - t - count, vc->vc_cols);
1829 : else
1830 2 : goto redraw_up;
1831 15 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1832 1 : break;
1833 2 :
1834 8 : case SCROLL_PAN_REDRAW:
1835 24 : if ((p->yscroll + count <=
1836 : 2 * (p->vrows - vc->vc_rows))
1837 : && ((!scroll_partial && (b - t == vc->vc_rows))
1838 : || (scroll_partial
1839 : && (b - t - count >
1840 : 3 * vc->vc_rows >> 2)))) {
1841 4 : if (t > 0)
1842 4 : fbcon_redraw_move(vc, p, 0, t, count);
1843 6 : ypan_up_redraw(vc, t, count);
1844 2 : if (vc->vc_rows - b > 0)
1845 2 : fbcon_redraw_move(vc, p, b,
1846 : vc->vc_rows - b, b);
1847 : } else
1848 4 : fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1849 15 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1850 1 : break;
1851 2 :
1852 8 : case SCROLL_PAN_MOVE:
1853 24 : if ((p->yscroll + count <=
1854 : 2 * (p->vrows - vc->vc_rows))
1855 : && ((!scroll_partial && (b - t == vc->vc_rows))
1856 : || (scroll_partial
1857 : && (b - t - count >
1858 : 3 * vc->vc_rows >> 2)))) {
1859 4 : if (t > 0)
1860 8 : fbcon_bmove(vc, 0, 0, count, 0, t,
1861 : vc->vc_cols);
1862 6 : ypan_up(vc, count);
1863 2 : if (vc->vc_rows - b > 0)
1864 4 : fbcon_bmove(vc, b - count, 0, b, 0,
1865 : vc->vc_rows - b,
1866 : vc->vc_cols);
1867 4 : } else if (info->flags & FBINFO_READS_FAST)
1868 8 : fbcon_bmove(vc, t + count, 0, t, 0,
1869 : b - t - count, vc->vc_cols);
1870 : else
1871 2 : goto redraw_up;
1872 15 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1873 1 : break;
1874 2 :
1875 10 : case SCROLL_REDRAW:
1876 : redraw_up:
1877 4 : fbcon_redraw(vc, p, t, b - t - count,
1878 : count * vc->vc_cols);
1879 5 : fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1880 3 : scr_memsetw((unsigned short *) (vc->vc_origin +
1881 : vc->vc_size_row *
1882 : (b - count)),
1883 : vc->vc_video_erase_char,
1884 : vc->vc_size_row * count);
1885 1 : return 1;
1886 2 : }
1887 5 : break;
1888 3 :
1889 3 : case SM_DOWN:
1890 2 : if (count > vc->vc_rows) /* Maximum realistic size */
1891 2 : count = vc->vc_rows;
1892 2 : if (logo_shown >= 0)
1893 1 : goto redraw_down;
1894 1 : switch (p->scrollmode) {
1895 5 : case SCROLL_MOVE:
1896 2 : fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1897 : -count);
1898 5 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1899 3 : scr_memsetw((unsigned short *) (vc->vc_origin +
1900 : vc->vc_size_row *
1901 : t),
1902 : vc->vc_video_erase_char,
1903 : vc->vc_size_row * count);
1904 1 : return 1;
1905 1 : break;
1906 :
1907 4 : case SCROLL_WRAP_MOVE:
1908 2 : if (b - t - count > 3 * vc->vc_rows >> 2) {
1909 2 : if (vc->vc_rows - b > 0)
1910 4 : fbcon_bmove(vc, b, 0, b - count, 0,
1911 : vc->vc_rows - b,
1912 : vc->vc_cols);
1913 4 : ywrap_down(vc, count);
1914 2 : if (t > 0)
1915 4 : fbcon_bmove(vc, count, 0, 0, 0, t,
1916 : vc->vc_cols);
1917 2 : } else if (info->flags & FBINFO_READS_FAST)
1918 4 : fbcon_bmove(vc, t, 0, t + count, 0,
1919 : b - t - count, vc->vc_cols);
1920 : else
1921 1 : goto redraw_down;
1922 15 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1923 1 : break;
1924 1 :
1925 4 : case SCROLL_PAN_MOVE:
1926 12 : if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1927 : && ((!scroll_partial && (b - t == vc->vc_rows))
1928 : || (scroll_partial
1929 : && (b - t - count >
1930 : 3 * vc->vc_rows >> 2)))) {
1931 2 : if (vc->vc_rows - b > 0)
1932 4 : fbcon_bmove(vc, b, 0, b - count, 0,
1933 : vc->vc_rows - b,
1934 : vc->vc_cols);
1935 4 : ypan_down(vc, count);
1936 2 : if (t > 0)
1937 4 : fbcon_bmove(vc, count, 0, 0, 0, t,
1938 : vc->vc_cols);
1939 2 : } else if (info->flags & FBINFO_READS_FAST)
1940 4 : fbcon_bmove(vc, t, 0, t + count, 0,
1941 : b - t - count, vc->vc_cols);
1942 : else
1943 1 : goto redraw_down;
1944 15 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1945 1 : break;
1946 1 :
1947 4 : case SCROLL_PAN_REDRAW:
1948 12 : if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1949 : && ((!scroll_partial && (b - t == vc->vc_rows))
1950 : || (scroll_partial
1951 : && (b - t - count >
1952 : 3 * vc->vc_rows >> 2)))) {
1953 2 : if (vc->vc_rows - b > 0)
1954 2 : fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1955 : b - count);
1956 4 : ypan_down_redraw(vc, t, count);
1957 2 : if (t > 0)
1958 2 : fbcon_redraw_move(vc, p, count, t, 0);
1959 : } else
1960 2 : fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1961 15 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1962 1 : break;
1963 1 :
1964 5 : case SCROLL_REDRAW:
1965 : redraw_down:
1966 2 : fbcon_redraw(vc, p, b - 1, b - t - count,
1967 : -count * vc->vc_cols);
1968 5 : fbcon_clear(vc, t, 0, count, vc->vc_cols);
1969 3 : scr_memsetw((unsigned short *) (vc->vc_origin +
1970 : vc->vc_size_row *
1971 : t),
1972 : vc->vc_video_erase_char,
1973 : vc->vc_size_row * count);
1974 1 : return 1;
1975 1 : }
1976 : }
1977 9 : return 0;
1978 4 : }
1979 :
1980 4 :
1981 : static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
1982 : int height, int width)
1983 : {
1984 51 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1985 51 : struct display *p = &fb_display[vc->vc_num];
1986 17 :
1987 68 : if (fbcon_is_inactive(vc, info))
1988 17 : return;
1989 :
1990 68 : if (!width || !height)
1991 17 : return;
1992 :
1993 : /* Split blits that cross physical y_wrap case.
1994 : * Pathological case involves 4 blits, better to use recursive
1995 : * code rather than unrolled case
1996 : *
1997 : * Recursive invocations don't need to erase the cursor over and
1998 : * over again, so we use fbcon_bmove_rec()
1999 : */
2000 119 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2001 : p->vrows - p->yscroll);
2002 17 : }
2003 :
2004 : static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
2005 : int dy, int dx, int height, int width, u_int y_break)
2006 : {
2007 51 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2008 51 : struct fbcon_ops *ops = info->fbcon_par;
2009 17 : u_int b;
2010 17 :
2011 85 : if (sy < y_break && sy + height > y_break) {
2012 17 : b = y_break - sy;
2013 34 : if (dy < sy) { /* Avoid trashing self */
2014 17 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2015 : y_break);
2016 17 : fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2017 : height - b, width, y_break);
2018 : } else {
2019 17 : fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2020 : height - b, width, y_break);
2021 17 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2022 : y_break);
2023 : }
2024 34 : return;
2025 : }
2026 :
2027 68 : if (dy < y_break && dy + height > y_break) {
2028 17 : b = y_break - dy;
2029 34 : if (dy < sy) { /* Avoid trashing self */
2030 17 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2031 : y_break);
2032 17 : fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2033 : height - b, width, y_break);
2034 : } else {
2035 17 : fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2036 : height - b, width, y_break);
2037 17 : fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2038 : y_break);
2039 : }
2040 34 : return;
2041 : }
2042 85 : ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2043 17 : height, width);
2044 : }
2045 :
2046 : static void updatescrollmode(struct display *p,
2047 : struct fb_info *info,
2048 6 : struct vc_data *vc)
2049 6 : {
2050 18 : struct fbcon_ops *ops = info->fbcon_par;
2051 12 : int fh = vc->vc_font.height;
2052 12 : int cap = info->flags;
2053 12 : u16 t = 0;
2054 66 : int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2055 6 : info->fix.xpanstep);
2056 66 : int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2057 66 : int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2058 66 : int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2059 6 : info->var.xres_virtual);
2060 66 : int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2061 6 : divides(ypan, vc->vc_font.height) && vyres > yres;
2062 102 : int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2063 6 : divides(ywrap, vc->vc_font.height) &&
2064 6 : divides(vc->vc_font.height, vyres) &&
2065 6 : divides(vc->vc_font.height, yres);
2066 12 : int reading_fast = cap & FBINFO_READS_FAST;
2067 12 : int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2068 6 : !(cap & FBINFO_HWACCEL_DISABLED);
2069 6 : int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2070 : !(cap & FBINFO_HWACCEL_DISABLED);
2071 :
2072 6 : p->vrows = vyres/fh;
2073 12 : if (yres > (fh * (vc->vc_rows + 1)))
2074 12 : p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2075 24 : if ((yres % fh) && (vyres % fh < yres % fh))
2076 6 : p->vrows--;
2077 :
2078 12 : if (good_wrap || good_pan) {
2079 12 : if (reading_fast || fast_copyarea)
2080 36 : p->scrollmode = good_wrap ?
2081 : SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
2082 : else
2083 36 : p->scrollmode = good_wrap ? SCROLL_REDRAW :
2084 : SCROLL_PAN_REDRAW;
2085 : } else {
2086 36 : if (reading_fast || (fast_copyarea && !fast_imageblit))
2087 6 : p->scrollmode = SCROLL_MOVE;
2088 : else
2089 6 : p->scrollmode = SCROLL_REDRAW;
2090 6 : }
2091 : }
2092 :
2093 : static int fbcon_resize(struct vc_data *vc, unsigned int width,
2094 : unsigned int height, unsigned int user)
2095 : {
2096 3 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2097 3 : struct fbcon_ops *ops = info->fbcon_par;
2098 3 : struct display *p = &fb_display[vc->vc_num];
2099 2 : struct fb_var_screeninfo var = info->var;
2100 1 : int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2101 1 :
2102 11 : virt_w = FBCON_SWAP(ops->rotate, width, height);
2103 11 : virt_h = FBCON_SWAP(ops->rotate, height, width);
2104 11 : virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2105 1 : vc->vc_font.height);
2106 11 : virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2107 1 : vc->vc_font.width);
2108 2 : var.xres = virt_w * virt_fw;
2109 2 : var.yres = virt_h * virt_fh;
2110 2 : x_diff = info->var.xres - var.xres;
2111 2 : y_diff = info->var.yres - var.yres;
2112 9 : if (x_diff < 0 || x_diff > virt_fw ||
2113 1 : y_diff < 0 || y_diff > virt_fh) {
2114 1 : const struct fb_videomode *mode;
2115 :
2116 : DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2117 1 : mode = fb_find_best_mode(&var, &info->modelist);
2118 2 : if (mode == NULL)
2119 1 : return -EINVAL;
2120 2 : display_to_var(&var, p);
2121 1 : fb_videomode_to_var(&var, mode);
2122 :
2123 4 : if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
2124 1 : return -EINVAL;
2125 :
2126 : DPRINTK("resize now %ix%i\n", var.xres, var.yres);
2127 2 : if (CON_IS_VISIBLE(vc)) {
2128 1 : var.activate = FB_ACTIVATE_NOW |
2129 : FB_ACTIVATE_FORCE;
2130 1 : fb_set_var(info, &var);
2131 : }
2132 2 : var_to_display(p, &info->var, info);
2133 1 : ops->var = info->var;
2134 : }
2135 4 : updatescrollmode(p, info, vc);
2136 1 : return 0;
2137 : }
2138 :
2139 : static int fbcon_switch(struct vc_data *vc)
2140 : {
2141 2 : struct fb_info *info, *old_info = NULL;
2142 1 : struct fbcon_ops *ops;
2143 3 : struct display *p = &fb_display[vc->vc_num];
2144 1 : struct fb_var_screeninfo var;
2145 2 : int i, ret, prev_console, charcnt = 256;
2146 1 :
2147 3 : info = registered_fb[con2fb_map[vc->vc_num]];
2148 3 : ops = info->fbcon_par;
2149 1 :
2150 3 : if (softback_top) {
2151 3 : if (softback_lines)
2152 4 : fbcon_set_origin(vc);
2153 7 : softback_top = softback_curr = softback_in = softback_buf;
2154 3 : softback_lines = 0;
2155 5 : fbcon_update_softback(vc);
2156 1 : }
2157 :
2158 4 : if (logo_shown >= 0) {
2159 2 : struct vc_data *conp2 = vc_cons[logo_shown].d;
2160 :
2161 8 : if (conp2->vc_top == logo_lines
2162 : && conp2->vc_bottom == conp2->vc_rows)
2163 2 : conp2->vc_top = 0;
2164 2 : logo_shown = FBCON_LOGO_CANSHOW;
2165 : }
2166 :
2167 2 : prev_console = ops->currcon;
2168 4 : if (prev_console != -1)
2169 2 : old_info = registered_fb[con2fb_map[prev_console]];
2170 : /*
2171 : * FIXME: If we have multiple fbdev's loaded, we need to
2172 : * update all info->currcon. Perhaps, we can place this
2173 : * in a centralized structure, but this might break some
2174 : * drivers.
2175 : *
2176 : * info->currcon = vc->vc_num;
2177 : */
2178 7 : for (i = 0; i < FB_MAX; i++) {
2179 7 : if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
2180 3 : struct fbcon_ops *o = registered_fb[i]->fbcon_par;
2181 :
2182 2 : o->currcon = vc->vc_num;
2183 : }
2184 : }
2185 1 : memset(&var, 0, sizeof(struct fb_var_screeninfo));
2186 2 : display_to_var(&var, p);
2187 1 : var.activate = FB_ACTIVATE_NOW;
2188 :
2189 : /*
2190 : * make sure we don't unnecessarily trip the memcmp()
2191 : * in fb_set_var()
2192 : */
2193 1 : info->var.activate = var.activate;
2194 1 : var.vmode |= info->var.vmode & ~FB_VMODE_MASK;
2195 1 : fb_set_var(info, &var);
2196 1 : ops->var = info->var;
2197 :
2198 6 : if (old_info != NULL && (old_info != info ||
2199 : info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
2200 3 : if (info->fbops->fb_set_par) {
2201 1 : ret = info->fbops->fb_set_par(info);
2202 :
2203 2 : if (ret)
2204 1 : printk(KERN_ERR "fbcon_switch: detected "
2205 : "unhandled fb_set_par error, "
2206 : "error code %d\n", ret);
2207 : }
2208 :
2209 2 : if (old_info != info)
2210 3 : fbcon_del_cursor_timer(old_info);
2211 : }
2212 :
2213 8 : if (fbcon_is_inactive(vc, info) ||
2214 : ops->blank_state != FB_BLANK_UNBLANK)
2215 3 : fbcon_del_cursor_timer(info);
2216 : else
2217 3 : fbcon_add_cursor_timer(info);
2218 :
2219 4 : set_blitting_type(vc, info);
2220 1 : ops->cursor_reset = 1;
2221 :
2222 6 : if (ops->rotate_font && ops->rotate_font(info, vc)) {
2223 1 : ops->rotate = FB_ROTATE_UR;
2224 2 : set_blitting_type(vc, info);
2225 : }
2226 :
2227 4 : vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
2228 12 : vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
2229 :
2230 4 : if (p->userfont)
2231 2 : charcnt = FNTCHARCNT(vc->vc_font.data);
2232 :
2233 4 : if (charcnt > 256)
2234 4 : vc->vc_complement_mask <<= 1;
2235 :
2236 4 : updatescrollmode(p, info, vc);
2237 :
2238 : switch (p->scrollmode) {
2239 4 : case SCROLL_WRAP_MOVE:
2240 2 : scrollback_phys_max = p->vrows - vc->vc_rows;
2241 1 : break;
2242 5 : case SCROLL_PAN_MOVE:
2243 5 : case SCROLL_PAN_REDRAW:
2244 2 : scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2245 2 : if (scrollback_phys_max < 0)
2246 1 : scrollback_phys_max = 0;
2247 1 : break;
2248 2 : default:
2249 2 : scrollback_phys_max = 0;
2250 1 : break;
2251 : }
2252 :
2253 1 : scrollback_max = 0;
2254 1 : scrollback_current = 0;
2255 :
2256 4 : if (!fbcon_is_inactive(vc, info)) {
2257 4 : ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2258 1 : ops->update_start(info);
2259 : }
2260 :
2261 3 : fbcon_set_palette(vc, color_table);
2262 2 : fbcon_clear_margins(vc, 0);
2263 :
2264 2 : if (logo_shown == FBCON_LOGO_DRAW) {
2265 :
2266 1 : logo_shown = fg_console;
2267 : /* This is protected above by initmem_freed */
2268 1 : fb_show_logo(info, ops->rotate);
2269 1 : update_region(vc,
2270 : vc->vc_origin + vc->vc_size_row * vc->vc_top,
2271 : vc->vc_size_row * (vc->vc_bottom -
2272 : vc->vc_top) / 2);
2273 1 : return 0;
2274 : }
2275 1 : return 1;
2276 : }
2277 :
2278 : static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2279 : int blank)
2280 1 : {
2281 1 : struct fb_event event;
2282 1 :
2283 3 : if (blank) {
2284 7 : unsigned short charmask = vc->vc_hi_font_mask ?
2285 : 0x1ff : 0xff;
2286 : unsigned short oldc;
2287 :
2288 1 : oldc = vc->vc_video_erase_char;
2289 2 : vc->vc_video_erase_char &= charmask;
2290 6 : fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2291 1 : vc->vc_video_erase_char = oldc;
2292 : }
2293 :
2294 :
2295 6 : if (!lock_fb_info(info))
2296 2 : return;
2297 2 : event.info = info;
2298 2 : event.data = ␣
2299 2 : fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
2300 4 : unlock_fb_info(info);
2301 1 : }
2302 :
2303 : static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2304 : {
2305 3 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2306 3 : struct fbcon_ops *ops = info->fbcon_par;
2307 1 :
2308 3 : if (mode_switch) {
2309 2 : struct fb_var_screeninfo var = info->var;
2310 1 :
2311 1 : ops->graphics = 1;
2312 :
2313 2 : if (!blank) {
2314 1 : var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2315 1 : fb_set_var(info, &var);
2316 1 : ops->graphics = 0;
2317 1 : ops->var = info->var;
2318 : }
2319 : }
2320 :
2321 4 : if (!fbcon_is_inactive(vc, info)) {
2322 2 : if (ops->blank_state != blank) {
2323 1 : ops->blank_state = blank;
2324 8 : fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2325 1 : ops->cursor_flash = (!blank);
2326 :
2327 2 : if (!(info->flags & FBINFO_MISC_USEREVENT))
2328 3 : if (fb_blank(info, blank))
2329 4 : fbcon_generic_blank(vc, info, blank);
2330 : }
2331 :
2332 6 : if (!blank)
2333 3 : update_screen(vc);
2334 : }
2335 :
2336 16 : if (mode_switch || fbcon_is_inactive(vc, info) ||
2337 : ops->blank_state != FB_BLANK_UNBLANK)
2338 15 : fbcon_del_cursor_timer(info);
2339 : else
2340 3 : fbcon_add_cursor_timer(info);
2341 :
2342 4 : return 0;
2343 : }
2344 :
2345 : static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2346 : {
2347 2 : u8 *fontdata = vc->vc_font.data;
2348 2 : u8 *data = font->data;
2349 1 : int i, j;
2350 1 :
2351 2 : font->width = vc->vc_font.width;
2352 2 : font->height = vc->vc_font.height;
2353 8 : font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2354 3 : if (!font->data)
2355 1 : return 0;
2356 :
2357 2 : if (font->width <= 8) {
2358 1 : j = vc->vc_font.height;
2359 5 : for (i = 0; i < font->charcount; i++) {
2360 2 : memcpy(data, fontdata, j);
2361 3 : memset(data + j, 0, 32 - j);
2362 1 : data += 32;
2363 1 : fontdata += j;
2364 : }
2365 2 : } else if (font->width <= 16) {
2366 1 : j = vc->vc_font.height * 2;
2367 5 : for (i = 0; i < font->charcount; i++) {
2368 2 : memcpy(data, fontdata, j);
2369 3 : memset(data + j, 0, 64 - j);
2370 1 : data += 64;
2371 1 : fontdata += j;
2372 : }
2373 2 : } else if (font->width <= 24) {
2374 5 : for (i = 0; i < font->charcount; i++) {
2375 6 : for (j = 0; j < vc->vc_font.height; j++) {
2376 7 : *data++ = fontdata[0];
2377 4 : *data++ = fontdata[1];
2378 3 : *data++ = fontdata[2];
2379 1 : fontdata += sizeof(u32);
2380 : }
2381 1 : memset(data, 0, 3 * (32 - j));
2382 1 : data += 3 * (32 - j);
2383 : }
2384 : } else {
2385 1 : j = vc->vc_font.height * 4;
2386 5 : for (i = 0; i < font->charcount; i++) {
2387 2 : memcpy(data, fontdata, j);
2388 3 : memset(data + j, 0, 128 - j);
2389 1 : data += 128;
2390 1 : fontdata += j;
2391 : }
2392 : }
2393 4 : return 0;
2394 : }
2395 :
2396 : static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2397 : const u8 * data, int userfont)
2398 : {
2399 9 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2400 9 : struct fbcon_ops *ops = info->fbcon_par;
2401 9 : struct display *p = &fb_display[vc->vc_num];
2402 3 : int resize;
2403 3 : int cnt;
2404 6 : char *old_data = NULL;
2405 3 :
2406 15 : if (CON_IS_VISIBLE(vc) && softback_lines)
2407 12 : fbcon_set_origin(vc);
2408 3 :
2409 39 : resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2410 15 : if (p->userfont)
2411 9 : old_data = vc->vc_font.data;
2412 15 : if (userfont)
2413 9 : cnt = FNTCHARCNT(data);
2414 3 : else
2415 9 : cnt = 256;
2416 21 : vc->vc_font.data = (void *)(p->fontdata = data);
2417 27 : if ((p->userfont = userfont))
2418 9 : REFCOUNT(data)++;
2419 9 : vc->vc_font.width = w;
2420 6 : vc->vc_font.height = h;
2421 30 : if (vc->vc_hi_font_mask && cnt == 256) {
2422 6 : vc->vc_hi_font_mask = 0;
2423 12 : if (vc->vc_can_do_color) {
2424 12 : vc->vc_complement_mask >>= 1;
2425 12 : vc->vc_s_complement_mask >>= 1;
2426 : }
2427 :
2428 : /* ++Edmund: reorder the attribute bits */
2429 12 : if (vc->vc_can_do_color) {
2430 12 : unsigned short *cp =
2431 : (unsigned short *) vc->vc_origin;
2432 6 : int count = vc->vc_screenbuf_size / 2;
2433 : unsigned short c;
2434 18 : for (; count > 0; count--, cp++) {
2435 9 : c = scr_readw(cp);
2436 6 : scr_writew(((c & 0xfe00) >> 1) |
2437 : (c & 0xff), cp);
2438 : }
2439 3 : c = vc->vc_video_erase_char;
2440 3 : vc->vc_video_erase_char =
2441 : ((c & 0xfe00) >> 1) | (c & 0xff);
2442 6 : vc->vc_attr >>= 1;
2443 : }
2444 30 : } else if (!vc->vc_hi_font_mask && cnt == 512) {
2445 6 : vc->vc_hi_font_mask = 0x100;
2446 12 : if (vc->vc_can_do_color) {
2447 12 : vc->vc_complement_mask <<= 1;
2448 12 : vc->vc_s_complement_mask <<= 1;
2449 : }
2450 :
2451 : /* ++Edmund: reorder the attribute bits */
2452 : {
2453 12 : unsigned short *cp =
2454 : (unsigned short *) vc->vc_origin;
2455 6 : int count = vc->vc_screenbuf_size / 2;
2456 : unsigned short c;
2457 18 : for (; count > 0; count--, cp++) {
2458 6 : unsigned short newc;
2459 6 : c = scr_readw(cp);
2460 6 : if (vc->vc_can_do_color)
2461 3 : newc =
2462 : ((c & 0xff00) << 1) | (c &
2463 : 0xff);
2464 : else
2465 3 : newc = c & ~0x100;
2466 3 : scr_writew(newc, cp);
2467 : }
2468 3 : c = vc->vc_video_erase_char;
2469 6 : if (vc->vc_can_do_color) {
2470 3 : vc->vc_video_erase_char =
2471 : ((c & 0xff00) << 1) | (c & 0xff);
2472 6 : vc->vc_attr <<= 1;
2473 : } else
2474 3 : vc->vc_video_erase_char = c & ~0x100;
2475 : }
2476 :
2477 : }
2478 :
2479 24 : if (resize) {
2480 : int cols, rows;
2481 :
2482 120 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2483 120 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2484 12 : cols /= w;
2485 12 : rows /= h;
2486 12 : vc_resize(vc, cols, rows);
2487 48 : if (CON_IS_VISIBLE(vc) && softback_buf)
2488 24 : fbcon_update_softback(vc);
2489 60 : } else if (CON_IS_VISIBLE(vc)
2490 : && vc->vc_mode == KD_TEXT) {
2491 24 : fbcon_clear_margins(vc, 0);
2492 3 : update_screen(vc);
2493 : }
2494 :
2495 90 : if (old_data && (--REFCOUNT(old_data) == 0))
2496 18 : kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2497 18 : return 0;
2498 : }
2499 :
2500 : static int fbcon_copy_font(struct vc_data *vc, int con)
2501 : {
2502 2 : struct display *od = &fb_display[con];
2503 2 : struct console_font *f = &vc->vc_font;
2504 1 :
2505 4 : if (od->fontdata == f->data)
2506 1 : return 0; /* already the same font... */
2507 10 : return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2508 : }
2509 :
2510 : /*
2511 : * User asked to set font; we are guaranteed that
2512 : * a) width and height are in range 1..32
2513 : * b) charcount does not exceed 512
2514 : * but lets not assume that, since someone might someday want to use larger
2515 : * fonts. And charcount of 512 is small for unicode support.
2516 : *
2517 : * However, user space gives the font in 32 rows , regardless of
2518 : * actual font height. So a new API is needed if support for larger fonts
2519 : * is ever implemented.
2520 : */
2521 :
2522 : static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2523 : {
2524 3 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2525 2 : unsigned charcount = font->charcount;
2526 3 : int w = font->width;
2527 3 : int h = font->height;
2528 1 : int size;
2529 1 : int i, csum;
2530 2 : u8 *new_data, *data = font->data;
2531 2 : int pitch = (font->width+7) >> 3;
2532 1 :
2533 1 : /* Is there a reason why fbconsole couldn't handle any charcount >256?
2534 1 : * If not this check should be changed to charcount < 256 */
2535 5 : if (charcount != 256 && charcount != 512)
2536 2 : return -EINVAL;
2537 1 :
2538 1 : /* Make sure drawing engine can handle the font */
2539 5 : if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2540 : !(info->pixmap.blit_y & (1 << (font->height - 1))))
2541 1 : return -EINVAL;
2542 :
2543 : /* Make sure driver can handle the font length */
2544 4 : if (fbcon_invalid_charcount(info, charcount))
2545 1 : return -EINVAL;
2546 :
2547 1 : size = h * pitch * charcount;
2548 :
2549 3 : new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2550 :
2551 2 : if (!new_data)
2552 1 : return -ENOMEM;
2553 :
2554 1 : new_data += FONT_EXTRA_WORDS * sizeof(int);
2555 1 : FNTSIZE(new_data) = size;
2556 1 : FNTCHARCNT(new_data) = charcount;
2557 1 : REFCOUNT(new_data) = 0; /* usage counter */
2558 5 : for (i=0; i< charcount; i++) {
2559 2 : memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2560 2 : }
2561 :
2562 : /* Since linux has a nice crc32 function use it for counting font
2563 : * checksums. */
2564 2 : csum = crc32(0, new_data, size);
2565 :
2566 1 : FNTSUM(new_data) = csum;
2567 : /* Check if the same font is on some other console already */
2568 5 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
2569 3 : struct vc_data *tmp = vc_cons[i].d;
2570 1 :
2571 13 : if (fb_display[i].userfont &&
2572 : fb_display[i].fontdata &&
2573 : FNTSUM(fb_display[i].fontdata) == csum &&
2574 1 : FNTSIZE(fb_display[i].fontdata) == size &&
2575 : tmp->vc_font.width == w &&
2576 : !memcmp(fb_display[i].fontdata, new_data, size)) {
2577 1 : kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2578 1 : new_data = (u8 *)fb_display[i].fontdata;
2579 1 : break;
2580 : }
2581 : }
2582 10 : return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2583 : }
2584 :
2585 : static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2586 : {
2587 3 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2588 1 : const struct font_desc *f;
2589 1 :
2590 2 : if (!name)
2591 1 : f = get_default_font(info->var.xres, info->var.yres,
2592 : info->pixmap.blit_x, info->pixmap.blit_y);
2593 3 : else if (!(f = find_font(name)))
2594 1 : return -ENOENT;
2595 :
2596 2 : font->width = f->width;
2597 2 : font->height = f->height;
2598 9 : return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2599 : }
2600 :
2601 1 : static u16 palette_red[16];
2602 1 : static u16 palette_green[16];
2603 1 : static u16 palette_blue[16];
2604 :
2605 1 : static struct fb_cmap palette_cmap = {
2606 : 0, 16, palette_red, palette_green, palette_blue, NULL
2607 : };
2608 :
2609 : static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2610 : {
2611 12 : struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2612 4 : int i, j, k, depth;
2613 4 : u8 val;
2614 4 :
2615 20 : if (fbcon_is_inactive(vc, info))
2616 8 : return -EINVAL;
2617 4 :
2618 12 : if (!CON_IS_VISIBLE(vc))
2619 8 : return 0;
2620 4 :
2621 8 : depth = fb_get_color_depth(&info->var, &info->fix);
2622 12 : if (depth > 3) {
2623 24 : for (i = j = 0; i < 16; i++) {
2624 12 : k = table[i];
2625 16 : val = vc->vc_palette[j++];
2626 4 : palette_red[k] = (val << 8) | val;
2627 12 : val = vc->vc_palette[j++];
2628 4 : palette_green[k] = (val << 8) | val;
2629 12 : val = vc->vc_palette[j++];
2630 4 : palette_blue[k] = (val << 8) | val;
2631 : }
2632 4 : palette_cmap.len = 16;
2633 4 : palette_cmap.start = 0;
2634 : /*
2635 : * If framebuffer is capable of less than 16 colors,
2636 : * use default palette of fbcon.
2637 : */
2638 : } else
2639 8 : fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2640 :
2641 16 : return fb_set_cmap(&palette_cmap, info);
2642 : }
2643 :
2644 : static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2645 : {
2646 1 : unsigned long p;
2647 1 : int line;
2648 :
2649 5 : if (vc->vc_num != fg_console || !softback_lines)
2650 1 : return (u16 *) (vc->vc_origin + offset);
2651 1 : line = offset / vc->vc_size_row;
2652 2 : if (line >= softback_lines)
2653 1 : return (u16 *) (vc->vc_origin + offset -
2654 : softback_lines * vc->vc_size_row);
2655 1 : p = softback_curr + offset;
2656 2 : if (p >= softback_end)
2657 1 : p += softback_buf - softback_end;
2658 1 : return (u16 *) p;
2659 : }
2660 :
2661 : static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2662 : int *px, int *py)
2663 : {
2664 1 : unsigned long ret;
2665 1 : int x, y;
2666 1 :
2667 5 : if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2668 2 : unsigned long offset = (pos - vc->vc_origin) / 2;
2669 :
2670 2 : x = offset % vc->vc_cols;
2671 2 : y = offset / vc->vc_cols;
2672 3 : if (vc->vc_num == fg_console)
2673 1 : y += softback_lines;
2674 1 : ret = pos + (vc->vc_cols - x) * 2;
2675 5 : } else if (vc->vc_num == fg_console && softback_lines) {
2676 1 : unsigned long offset = pos - softback_curr;
2677 :
2678 2 : if (pos < softback_curr)
2679 1 : offset += softback_end - softback_buf;
2680 1 : offset /= 2;
2681 2 : x = offset % vc->vc_cols;
2682 2 : y = offset / vc->vc_cols;
2683 1 : ret = pos + (vc->vc_cols - x) * 2;
2684 2 : if (ret == softback_end)
2685 1 : ret = softback_buf;
2686 2 : if (ret == softback_in)
2687 1 : ret = vc->vc_origin;
2688 : } else {
2689 : /* Should not happen */
2690 2 : x = y = 0;
2691 1 : ret = vc->vc_origin;
2692 : }
2693 2 : if (px)
2694 1 : *px = x;
2695 2 : if (py)
2696 1 : *py = y;
2697 1 : return ret;
2698 : }
2699 :
2700 : /* As we might be inside of softback, we may work with non-contiguous buffer,
2701 : that's why we have to use a separate routine. */
2702 : static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2703 : {
2704 6 : while (cnt--) {
2705 3 : u16 a = scr_readw(p);
2706 4 : if (!vc->vc_can_do_color)
2707 1 : a ^= 0x0800;
2708 3 : else if (vc->vc_hi_font_mask == 0x100)
2709 1 : a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2710 : (((a) & 0x0e00) << 4);
2711 1 : else
2712 1 : a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2713 : (((a) & 0x0700) << 4);
2714 3 : scr_writew(a, p++);
2715 2 : if (p == (u16 *) softback_end)
2716 1 : p = (u16 *) softback_buf;
2717 2 : if (p == (u16 *) softback_in)
2718 2 : p = (u16 *) vc->vc_origin;
2719 : }
2720 : }
2721 :
2722 1 : static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2723 : {
2724 28 : struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2725 42 : struct fbcon_ops *ops = info->fbcon_par;
2726 28 : struct display *disp = &fb_display[fg_console];
2727 14 : int offset, limit, scrollback_old;
2728 14 :
2729 42 : if (softback_top) {
2730 56 : if (vc->vc_num != fg_console)
2731 28 : return 0;
2732 84 : if (vc->vc_mode != KD_TEXT || !lines)
2733 28 : return 0;
2734 42 : if (logo_shown >= 0) {
2735 14 : struct vc_data *conp2 = vc_cons[logo_shown].d;
2736 :
2737 56 : if (conp2->vc_top == logo_lines
2738 : && conp2->vc_bottom == conp2->vc_rows)
2739 14 : conp2->vc_top = 0;
2740 42 : if (logo_shown == vc->vc_num) {
2741 : unsigned long p, q;
2742 : int i;
2743 :
2744 14 : p = softback_in;
2745 14 : q = vc->vc_origin +
2746 : logo_lines * vc->vc_size_row;
2747 70 : for (i = 0; i < logo_lines; i++) {
2748 42 : if (p == softback_top)
2749 42 : break;
2750 28 : if (p == softback_buf)
2751 14 : p = softback_end;
2752 28 : p -= vc->vc_size_row;
2753 42 : q -= vc->vc_size_row;
2754 28 : scr_memcpyw((u16 *) q, (u16 *) p,
2755 : vc->vc_size_row);
2756 : }
2757 28 : softback_in = softback_curr = p;
2758 14 : update_region(vc, vc->vc_origin,
2759 : logo_lines * vc->vc_cols);
2760 : }
2761 28 : logo_shown = FBCON_LOGO_CANSHOW;
2762 : }
2763 52 : fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2764 42 : fbcon_redraw_softback(vc, disp, lines);
2765 26 : fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2766 14 : return 0;
2767 : }
2768 :
2769 28 : if (!scrollback_phys_max)
2770 14 : return -ENOSYS;
2771 :
2772 14 : scrollback_old = scrollback_current;
2773 14 : scrollback_current -= lines;
2774 28 : if (scrollback_current < 0)
2775 14 : scrollback_current = 0;
2776 28 : else if (scrollback_current > scrollback_max)
2777 14 : scrollback_current = scrollback_max;
2778 28 : if (scrollback_current == scrollback_old)
2779 14 : return 0;
2780 :
2781 56 : if (fbcon_is_inactive(vc, info))
2782 14 : return 0;
2783 :
2784 26 : fbcon_cursor(vc, CM_ERASE);
2785 :
2786 28 : offset = disp->yscroll - scrollback_current;
2787 14 : limit = disp->vrows;
2788 14 : switch (disp->scrollmode) {
2789 70 : case SCROLL_WRAP_MOVE:
2790 14 : info->var.vmode |= FB_VMODE_YWRAP;
2791 14 : break;
2792 70 : case SCROLL_PAN_MOVE:
2793 70 : case SCROLL_PAN_REDRAW:
2794 14 : limit -= vc->vc_rows;
2795 14 : info->var.vmode &= ~FB_VMODE_YWRAP;
2796 14 : break;
2797 14 : }
2798 28 : if (offset < 0)
2799 28 : offset += limit;
2800 28 : else if (offset >= limit)
2801 14 : offset -= limit;
2802 :
2803 14 : ops->var.xoffset = 0;
2804 14 : ops->var.yoffset = offset * vc->vc_font.height;
2805 14 : ops->update_start(info);
2806 :
2807 28 : if (!scrollback_current)
2808 26 : fbcon_cursor(vc, CM_DRAW);
2809 28 : return 0;
2810 : }
2811 :
2812 : static int fbcon_set_origin(struct vc_data *vc)
2813 : {
2814 46 : if (softback_lines)
2815 88 : fbcon_scrolldelta(vc, softback_lines);
2816 46 : return 0;
2817 : }
2818 :
2819 : static void fbcon_suspended(struct fb_info *info)
2820 : {
2821 2 : struct vc_data *vc = NULL;
2822 3 : struct fbcon_ops *ops = info->fbcon_par;
2823 :
2824 4 : if (!ops || ops->currcon < 0)
2825 1 : return;
2826 1 : vc = vc_cons[ops->currcon].d;
2827 :
2828 : /* Clear cursor, restore saved data */
2829 3 : fbcon_cursor(vc, CM_ERASE);
2830 1 : }
2831 :
2832 : static void fbcon_resumed(struct fb_info *info)
2833 : {
2834 1 : struct vc_data *vc;
2835 3 : struct fbcon_ops *ops = info->fbcon_par;
2836 :
2837 4 : if (!ops || ops->currcon < 0)
2838 1 : return;
2839 1 : vc = vc_cons[ops->currcon].d;
2840 :
2841 1 : update_screen(vc);
2842 1 : }
2843 :
2844 : static void fbcon_modechanged(struct fb_info *info)
2845 : {
2846 6 : struct fbcon_ops *ops = info->fbcon_par;
2847 2 : struct vc_data *vc;
2848 2 : struct display *p;
2849 2 : int rows, cols;
2850 2 :
2851 10 : if (!ops || ops->currcon < 0)
2852 4 : return;
2853 4 : vc = vc_cons[ops->currcon].d;
2854 12 : if (vc->vc_mode != KD_TEXT ||
2855 2 : registered_fb[con2fb_map[ops->currcon]] != info)
2856 4 : return;
2857 :
2858 4 : p = &fb_display[vc->vc_num];
2859 4 : set_blitting_type(vc, info);
2860 :
2861 4 : if (CON_IS_VISIBLE(vc)) {
2862 4 : var_to_display(p, &info->var, info);
2863 20 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2864 20 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2865 2 : cols /= vc->vc_font.width;
2866 2 : rows /= vc->vc_font.height;
2867 2 : vc_resize(vc, cols, rows);
2868 4 : updatescrollmode(p, info, vc);
2869 2 : scrollback_max = 0;
2870 2 : scrollback_current = 0;
2871 :
2872 8 : if (!fbcon_is_inactive(vc, info)) {
2873 8 : ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2874 2 : ops->update_start(info);
2875 : }
2876 :
2877 6 : fbcon_set_palette(vc, color_table);
2878 2 : update_screen(vc);
2879 4 : if (softback_buf)
2880 4 : fbcon_update_softback(vc);
2881 : }
2882 6 : }
2883 :
2884 : static void fbcon_set_all_vcs(struct fb_info *info)
2885 : {
2886 3 : struct fbcon_ops *ops = info->fbcon_par;
2887 1 : struct vc_data *vc;
2888 1 : struct display *p;
2889 2 : int i, rows, cols, fg = -1;
2890 1 :
2891 5 : if (!ops || ops->currcon < 0)
2892 2 : return;
2893 1 :
2894 7 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
2895 5 : vc = vc_cons[i].d;
2896 9 : if (!vc || vc->vc_mode != KD_TEXT ||
2897 : registered_fb[con2fb_map[i]] != info)
2898 1 : continue;
2899 :
2900 2 : if (CON_IS_VISIBLE(vc)) {
2901 1 : fg = i;
2902 1 : continue;
2903 : }
2904 :
2905 2 : p = &fb_display[vc->vc_num];
2906 2 : set_blitting_type(vc, info);
2907 2 : var_to_display(p, &info->var, info);
2908 10 : cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2909 10 : rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2910 1 : cols /= vc->vc_font.width;
2911 1 : rows /= vc->vc_font.height;
2912 1 : vc_resize(vc, cols, rows);
2913 : }
2914 1 :
2915 2 : if (fg != -1)
2916 5 : fbcon_modechanged(info);
2917 2 : }
2918 :
2919 : static int fbcon_mode_deleted(struct fb_info *info,
2920 : struct fb_videomode *mode)
2921 1 : {
2922 1 : struct fb_info *fb_info;
2923 1 : struct display *p;
2924 2 : int i, j, found = 0;
2925 1 :
2926 1 : /* before deletion, ensure that mode is not in use */
2927 5 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
2928 3 : j = con2fb_map[i];
2929 3 : if (j == -1)
2930 1 : continue;
2931 1 : fb_info = registered_fb[j];
2932 2 : if (fb_info != info)
2933 2 : continue;
2934 1 : p = &fb_display[i];
2935 5 : if (!p || !p->mode)
2936 1 : continue;
2937 3 : if (fb_mode_is_equal(p->mode, mode)) {
2938 1 : found = 1;
2939 1 : break;
2940 : }
2941 : }
2942 1 : return found;
2943 1 : }
2944 :
2945 : #ifdef CONFIG_VT_HW_CONSOLE_BINDING
2946 : static int fbcon_unbind(void)
2947 : {
2948 : int ret;
2949 :
2950 : ret = unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc,
2951 : fbcon_is_default);
2952 :
2953 : if (!ret)
2954 : fbcon_has_console_bind = 0;
2955 :
2956 : return ret;
2957 : }
2958 : #else
2959 : static inline int fbcon_unbind(void)
2960 : {
2961 1 : return -EINVAL;
2962 : }
2963 : #endif /* CONFIG_VT_HW_CONSOLE_BINDING */
2964 :
2965 : static int fbcon_fb_unbind(int idx)
2966 : {
2967 3 : int i, new_idx = -1, ret = 0;
2968 1 :
2969 3 : if (!fbcon_has_console_bind)
2970 1 : return 0;
2971 :
2972 5 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
2973 6 : if (con2fb_map[i] != idx &&
2974 1 : con2fb_map[i] != -1) {
2975 1 : new_idx = i;
2976 1 : break;
2977 : }
2978 1 : }
2979 :
2980 2 : if (new_idx != -1) {
2981 6 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
2982 5 : if (con2fb_map[i] == idx)
2983 5 : set_con2fb_map(i, new_idx, 0);
2984 : }
2985 : } else
2986 2 : ret = fbcon_unbind();
2987 :
2988 2 : return ret;
2989 : }
2990 :
2991 : static int fbcon_fb_unregistered(struct fb_info *info)
2992 : {
2993 1 : int i, idx;
2994 1 :
2995 1 : idx = info->node;
2996 5 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
2997 4 : if (con2fb_map[i] == idx)
2998 2 : con2fb_map[i] = -1;
2999 : }
3000 :
3001 2 : if (idx == info_idx) {
3002 1 : info_idx = -1;
3003 :
3004 5 : for (i = 0; i < FB_MAX; i++) {
3005 4 : if (registered_fb[i] != NULL) {
3006 2 : info_idx = i;
3007 1 : break;
3008 : }
3009 : }
3010 1 : }
3011 :
3012 4 : if (info_idx != -1) {
3013 7 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3014 4 : if (con2fb_map[i] == -1)
3015 2 : con2fb_map[i] = info_idx;
3016 : }
3017 : }
3018 :
3019 6 : if (primary_device == idx)
3020 3 : primary_device = -1;
3021 :
3022 6 : if (!num_registered_fb)
3023 3 : unregister_con_driver(&fb_con);
3024 :
3025 3 : return 0;
3026 : }
3027 :
3028 : #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
3029 : static void fbcon_select_primary(struct fb_info *info)
3030 : {
3031 9 : if (!map_override && primary_device == -1 &&
3032 1 : fb_is_primary_device(info)) {
3033 1 : int i;
3034 :
3035 1 : printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
3036 : info->fix.id, info->node);
3037 1 : primary_device = info->node;
3038 :
3039 5 : for (i = first_fb_vc; i <= last_fb_vc; i++)
3040 3 : con2fb_map_boot[i] = primary_device;
3041 1 :
3042 3 : if (con_is_bound(&fb_con)) {
3043 1 : printk(KERN_INFO "fbcon: Remapping primary device, "
3044 : "fb%i, to tty %i-%i\n", info->node,
3045 : first_fb_vc + 1, last_fb_vc + 1);
3046 1 : info_idx = primary_device;
3047 : }
3048 : }
3049 3 :
3050 : }
3051 : #else
3052 : static inline void fbcon_select_primary(struct fb_info *info)
3053 : {
3054 : return;
3055 : }
3056 : #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */
3057 :
3058 : static int fbcon_fb_registered(struct fb_info *info)
3059 : {
3060 2 : int ret = 0, i, idx;
3061 1 :
3062 2 : idx = info->node;
3063 4 : fbcon_select_primary(info);
3064 :
3065 2 : if (info_idx == -1) {
3066 5 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3067 4 : if (con2fb_map_boot[i] == idx) {
3068 2 : info_idx = idx;
3069 1 : break;
3070 : }
3071 : }
3072 1 :
3073 2 : if (info_idx != -1)
3074 4 : ret = fbcon_takeover(1);
3075 : } else {
3076 6 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3077 5 : if (con2fb_map_boot[i] == idx)
3078 5 : set_con2fb_map(i, idx, 0);
3079 : }
3080 : }
3081 :
3082 3 : return ret;
3083 : }
3084 :
3085 : static void fbcon_fb_blanked(struct fb_info *info, int blank)
3086 : {
3087 3 : struct fbcon_ops *ops = info->fbcon_par;
3088 1 : struct vc_data *vc;
3089 :
3090 4 : if (!ops || ops->currcon < 0)
3091 1 : return;
3092 :
3093 1 : vc = vc_cons[ops->currcon].d;
3094 5 : if (vc->vc_mode != KD_TEXT ||
3095 : registered_fb[con2fb_map[ops->currcon]] != info)
3096 1 : return;
3097 :
3098 2 : if (CON_IS_VISIBLE(vc)) {
3099 2 : if (blank)
3100 1 : do_blank_screen(0);
3101 : else
3102 1 : do_unblank_screen(0);
3103 : }
3104 1 : ops->blank_state = blank;
3105 1 : }
3106 :
3107 : static void fbcon_new_modelist(struct fb_info *info)
3108 : {
3109 1 : int i;
3110 1 : struct vc_data *vc;
3111 1 : struct fb_var_screeninfo var;
3112 1 : const struct fb_videomode *mode;
3113 :
3114 6 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3115 5 : if (registered_fb[con2fb_map[i]] != info)
3116 2 : continue;
3117 2 : if (!fb_display[i].mode)
3118 1 : continue;
3119 1 : vc = vc_cons[i].d;
3120 2 : display_to_var(&var, &fb_display[i]);
3121 2 : mode = fb_find_nearest_mode(fb_display[i].mode,
3122 : &info->modelist);
3123 1 : fb_videomode_to_var(&var, mode);
3124 4 : fbcon_set_disp(info, &var, vc->vc_num);
3125 : }
3126 1 : }
3127 :
3128 : static void fbcon_get_requirement(struct fb_info *info,
3129 : struct fb_blit_caps *caps)
3130 1 : {
3131 1 : struct vc_data *vc;
3132 1 : struct display *p;
3133 1 :
3134 2 : if (caps->flags) {
3135 : int i, charcnt;
3136 :
3137 5 : for (i = first_fb_vc; i <= last_fb_vc; i++) {
3138 3 : vc = vc_cons[i].d;
3139 8 : if (vc && vc->vc_mode == KD_TEXT &&
3140 : info->node == con2fb_map[i]) {
3141 1 : p = &fb_display[i];
3142 1 : caps->x |= 1 << (vc->vc_font.width - 1);
3143 1 : caps->y |= 1 << (vc->vc_font.height - 1);
3144 6 : charcnt = (p->userfont) ?
3145 : FNTCHARCNT(p->fontdata) : 256;
3146 2 : if (caps->len < charcnt)
3147 1 : caps->len = charcnt;
3148 : }
3149 : }
3150 : } else {
3151 1 : vc = vc_cons[fg_console].d;
3152 :
3153 7 : if (vc && vc->vc_mode == KD_TEXT &&
3154 : info->node == con2fb_map[fg_console]) {
3155 1 : p = &fb_display[fg_console];
3156 1 : caps->x = 1 << (vc->vc_font.width - 1);
3157 1 : caps->y = 1 << (vc->vc_font.height - 1);
3158 6 : caps->len = (p->userfont) ?
3159 : FNTCHARCNT(p->fontdata) : 256;
3160 : }
3161 : }
3162 2 : }
3163 :
3164 : static int fbcon_event_notify(struct notifier_block *self,
3165 : unsigned long action, void *data)
3166 : {
3167 2 : struct fb_event *event = data;
3168 2 : struct fb_info *info = event->info;
3169 1 : struct fb_videomode *mode;
3170 1 : struct fb_con2fbmap *con2fb;
3171 1 : struct fb_blit_caps *caps;
3172 2 : int idx, ret = 0;
3173 1 :
3174 : /*
3175 : * ignore all events except driver registration and deregistration
3176 : * if fbcon is not active
3177 : */
3178 4 : if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
3179 : action == FB_EVENT_FB_UNREGISTERED))
3180 1 : goto done;
3181 :
3182 1 : switch(action) {
3183 4 : case FB_EVENT_SUSPEND:
3184 3 : fbcon_suspended(info);
3185 1 : break;
3186 4 : case FB_EVENT_RESUME:
3187 2 : fbcon_resumed(info);
3188 1 : break;
3189 4 : case FB_EVENT_MODE_CHANGE:
3190 5 : fbcon_modechanged(info);
3191 1 : break;
3192 4 : case FB_EVENT_MODE_CHANGE_ALL:
3193 4 : fbcon_set_all_vcs(info);
3194 1 : break;
3195 4 : case FB_EVENT_MODE_DELETE:
3196 2 : mode = event->data;
3197 2 : ret = fbcon_mode_deleted(info, mode);
3198 1 : break;
3199 4 : case FB_EVENT_FB_UNBIND:
3200 1 : idx = info->node;
3201 4 : ret = fbcon_fb_unbind(idx);
3202 1 : break;
3203 4 : case FB_EVENT_FB_REGISTERED:
3204 4 : ret = fbcon_fb_registered(info);
3205 1 : break;
3206 4 : case FB_EVENT_FB_UNREGISTERED:
3207 4 : ret = fbcon_fb_unregistered(info);
3208 1 : break;
3209 4 : case FB_EVENT_SET_CONSOLE_MAP:
3210 2 : con2fb = event->data;
3211 5 : ret = set_con2fb_map(con2fb->console - 1,
3212 : con2fb->framebuffer, 1);
3213 1 : break;
3214 4 : case FB_EVENT_GET_CONSOLE_MAP:
3215 2 : con2fb = event->data;
3216 1 : con2fb->framebuffer = con2fb_map[con2fb->console - 1];
3217 1 : break;
3218 4 : case FB_EVENT_BLANK:
3219 3 : fbcon_fb_blanked(info, *(int *)event->data);
3220 1 : break;
3221 4 : case FB_EVENT_NEW_MODELIST:
3222 2 : fbcon_new_modelist(info);
3223 1 : break;
3224 4 : case FB_EVENT_GET_REQ:
3225 2 : caps = event->data;
3226 3 : fbcon_get_requirement(info, caps);
3227 1 : break;
3228 1 : }
3229 : done:
3230 14 : return ret;
3231 13 : }
3232 :
3233 : /*
3234 : * The console `switch' structure for the frame buffer based console
3235 : */
3236 :
3237 1 : static const struct consw fb_con = {
3238 : .owner = THIS_MODULE,
3239 : .con_startup = fbcon_startup,
3240 : .con_init = fbcon_init,
3241 : .con_deinit = fbcon_deinit,
3242 : .con_clear = fbcon_clear,
3243 : .con_putc = fbcon_putc,
3244 : .con_putcs = fbcon_putcs,
3245 : .con_cursor = fbcon_cursor,
3246 : .con_scroll = fbcon_scroll,
3247 : .con_bmove = fbcon_bmove,
3248 : .con_switch = fbcon_switch,
3249 : .con_blank = fbcon_blank,
3250 : .con_font_set = fbcon_set_font,
3251 : .con_font_get = fbcon_get_font,
3252 : .con_font_default = fbcon_set_def_font,
3253 : .con_font_copy = fbcon_copy_font,
3254 : .con_set_palette = fbcon_set_palette,
3255 : .con_scrolldelta = fbcon_scrolldelta,
3256 : .con_set_origin = fbcon_set_origin,
3257 : .con_invert_region = fbcon_invert_region,
3258 : .con_screen_pos = fbcon_screen_pos,
3259 : .con_getxy = fbcon_getxy,
3260 : .con_resize = fbcon_resize,
3261 : };
3262 :
3263 1 : static struct notifier_block fbcon_event_notifier = {
3264 : .notifier_call = fbcon_event_notify,
3265 : };
3266 :
3267 : static ssize_t store_rotate(struct device *device,
3268 : struct device_attribute *attr, const char *buf,
3269 : size_t count)
3270 1 : {
3271 1 : struct fb_info *info;
3272 1 : int rotate, idx;
3273 2 : char **last = NULL;
3274 1 :
3275 2 : if (fbcon_has_exited)
3276 1 : return count;
3277 :
3278 1 : acquire_console_sem();
3279 1 : idx = con2fb_map[fg_console];
3280 :
3281 4 : if (idx == -1 || registered_fb[idx] == NULL)
3282 1 : goto err;
3283 :
3284 1 : info = registered_fb[idx];
3285 2 : rotate = simple_strtoul(buf, last, 0);
3286 2 : fbcon_rotate(info, rotate);
3287 : err:
3288 3 : release_console_sem();
3289 2 : return count;
3290 : }
3291 :
3292 : static ssize_t store_rotate_all(struct device *device,
3293 : struct device_attribute *attr,const char *buf,
3294 : size_t count)
3295 1 : {
3296 1 : struct fb_info *info;
3297 1 : int rotate, idx;
3298 2 : char **last = NULL;
3299 1 :
3300 2 : if (fbcon_has_exited)
3301 1 : return count;
3302 :
3303 1 : acquire_console_sem();
3304 1 : idx = con2fb_map[fg_console];
3305 :
3306 4 : if (idx == -1 || registered_fb[idx] == NULL)
3307 1 : goto err;
3308 :
3309 1 : info = registered_fb[idx];
3310 2 : rotate = simple_strtoul(buf, last, 0);
3311 2 : fbcon_rotate_all(info, rotate);
3312 : err:
3313 3 : release_console_sem();
3314 2 : return count;
3315 : }
3316 :
3317 : static ssize_t show_rotate(struct device *device,
3318 : struct device_attribute *attr,char *buf)
3319 : {
3320 1 : struct fb_info *info;
3321 2 : int rotate = 0, idx;
3322 1 :
3323 3 : if (fbcon_has_exited)
3324 1 : return 0;
3325 :
3326 1 : acquire_console_sem();
3327 1 : idx = con2fb_map[fg_console];
3328 :
3329 4 : if (idx == -1 || registered_fb[idx] == NULL)
3330 1 : goto err;
3331 :
3332 1 : info = registered_fb[idx];
3333 2 : rotate = fbcon_get_rotate(info);
3334 : err:
3335 3 : release_console_sem();
3336 4 : return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3337 : }
3338 :
3339 : static ssize_t show_cursor_blink(struct device *device,
3340 : struct device_attribute *attr, char *buf)
3341 : {
3342 1 : struct fb_info *info;
3343 1 : struct fbcon_ops *ops;
3344 2 : int idx, blink = -1;
3345 1 :
3346 3 : if (fbcon_has_exited)
3347 1 : return 0;
3348 :
3349 1 : acquire_console_sem();
3350 1 : idx = con2fb_map[fg_console];
3351 :
3352 4 : if (idx == -1 || registered_fb[idx] == NULL)
3353 1 : goto err;
3354 :
3355 1 : info = registered_fb[idx];
3356 2 : ops = info->fbcon_par;
3357 :
3358 2 : if (!ops)
3359 1 : goto err;
3360 :
3361 1 : blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3362 1 : err:
3363 1 : release_console_sem();
3364 2 : return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3365 : }
3366 :
3367 : static ssize_t store_cursor_blink(struct device *device,
3368 : struct device_attribute *attr,
3369 : const char *buf, size_t count)
3370 0 : {
3371 0 : struct fb_info *info;
3372 0 : int blink, idx;
3373 0 : char **last = NULL;
3374 0 :
3375 0 : if (fbcon_has_exited)
3376 0 : return count;
3377 :
3378 0 : acquire_console_sem();
3379 0 : idx = con2fb_map[fg_console];
3380 :
3381 0 : if (idx == -1 || registered_fb[idx] == NULL)
3382 0 : goto err;
3383 :
3384 0 : info = registered_fb[idx];
3385 :
3386 0 : if (!info->fbcon_par)
3387 0 : goto err;
3388 :
3389 0 : blink = simple_strtoul(buf, last, 0);
3390 :
3391 0 : if (blink) {
3392 0 : fbcon_cursor_noblink = 0;
3393 0 : fbcon_add_cursor_timer(info);
3394 : } else {
3395 0 : fbcon_cursor_noblink = 1;
3396 0 : fbcon_del_cursor_timer(info);
3397 : }
3398 :
3399 0 : err:
3400 0 : release_console_sem();
3401 0 : return count;
3402 : }
3403 :
3404 1 : static struct device_attribute device_attrs[] = {
3405 : __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3406 : __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
3407 : __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3408 : store_cursor_blink),
3409 : };
3410 :
3411 : static int fbcon_init_device(void)
3412 : {
3413 2 : int i, error = 0;
3414 1 :
3415 1 : fbcon_has_sysfs = 1;
3416 :
3417 5 : for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
3418 3 : error = device_create_file(fbcon_device, &device_attrs[i]);
3419 1 :
3420 2 : if (error)
3421 1 : break;
3422 : }
3423 1 :
3424 2 : if (error) {
3425 4 : while (--i >= 0)
3426 2 : device_remove_file(fbcon_device, &device_attrs[i]);
3427 1 :
3428 2 : fbcon_has_sysfs = 0;
3429 : }
3430 :
3431 2 : return 0;
3432 : }
3433 :
3434 : static void fbcon_start(void)
3435 : {
3436 3 : if (num_registered_fb) {
3437 : int i;
3438 :
3439 1 : acquire_console_sem();
3440 :
3441 5 : for (i = 0; i < FB_MAX; i++) {
3442 4 : if (registered_fb[i] != NULL) {
3443 2 : info_idx = i;
3444 1 : break;
3445 : }
3446 : }
3447 1 :
3448 1 : release_console_sem();
3449 4 : fbcon_takeover(0);
3450 : }
3451 2 : }
3452 :
3453 : static void fbcon_exit(void)
3454 : {
3455 2 : struct fb_info *info;
3456 2 : int i, j, mapped;
3457 2 :
3458 6 : if (fbcon_has_exited)
3459 4 : return;
3460 2 :
3461 2 : kfree((void *)softback_buf);
3462 2 : softback_buf = 0UL;
3463 :
3464 16 : for (i = 0; i < FB_MAX; i++) {
3465 10 : int pending;
3466 2 :
3467 2 : mapped = 0;
3468 2 : info = registered_fb[i];
3469 :
3470 4 : if (info == NULL)
3471 2 : continue;
3472 :
3473 2 : pending = cancel_work_sync(&info->queue);
3474 : DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" :
3475 : "no"));
3476 :
3477 10 : for (j = first_fb_vc; j <= last_fb_vc; j++) {
3478 8 : if (con2fb_map[j] == i)
3479 4 : mapped = 1;
3480 : }
3481 :
3482 4 : if (mapped) {
3483 6 : if (info->fbops->fb_release)
3484 2 : info->fbops->fb_release(info, 0);
3485 4 : module_put(info->fbops->owner);
3486 :
3487 6 : if (info->fbcon_par) {
3488 4 : struct fbcon_ops *ops = info->fbcon_par;
3489 :
3490 6 : fbcon_del_cursor_timer(info);
3491 4 : kfree(ops->cursor_src);
3492 4 : kfree(info->fbcon_par);
3493 2 : info->fbcon_par = NULL;
3494 : }
3495 :
3496 8 : if (info->queue.func == fb_flashcursor)
3497 4 : info->queue.func = NULL;
3498 : }
3499 : }
3500 :
3501 2 : fbcon_has_exited = 1;
3502 2 : }
3503 :
3504 6 : static int __init fb_console_init(void)
3505 : {
3506 1 : int i;
3507 1 :
3508 2 : acquire_console_sem();
3509 2 : fb_register_client(&fbcon_event_notifier);
3510 1 : fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
3511 : "fbcon");
3512 :
3513 4 : if (IS_ERR(fbcon_device)) {
3514 3 : printk(KERN_WARNING "Unable to create device "
3515 : "for fbcon; errno = %ld\n",
3516 : PTR_ERR(fbcon_device));
3517 1 : fbcon_device = NULL;
3518 : } else
3519 3 : fbcon_init_device();
3520 :
3521 7 : for (i = 0; i < MAX_NR_CONSOLES; i++)
3522 3 : con2fb_map[i] = -1;
3523 1 :
3524 1 : release_console_sem();
3525 3 : fbcon_start();
3526 1 : return 0;
3527 : }
3528 :
3529 : module_init(fb_console_init);
3530 1 :
3531 : #ifdef MODULE
3532 :
3533 : static void __exit fbcon_deinit_device(void)
3534 : {
3535 : int i;
3536 :
3537 : if (fbcon_has_sysfs) {
3538 : for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
3539 : device_remove_file(fbcon_device, &device_attrs[i]);
3540 :
3541 : fbcon_has_sysfs = 0;
3542 : }
3543 : }
3544 :
3545 : static void __exit fb_console_exit(void)
3546 : {
3547 : acquire_console_sem();
3548 : fb_unregister_client(&fbcon_event_notifier);
3549 : fbcon_deinit_device();
3550 : device_destroy(fb_class, MKDEV(0, 0));
3551 : fbcon_exit();
3552 : release_console_sem();
3553 : unregister_con_driver(&fb_con);
3554 : }
3555 :
3556 : module_exit(fb_console_exit);
3557 :
3558 : #endif
3559 :
3560 : MODULE_LICENSE("GPL");
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