]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/video/console/fbcon.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
fb: add hooks to handle KDB enter/exit
[net-next-2.6.git] / drivers / video / console / fbcon.c
CommitLineData
1da177e4
LT		 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
1da177e4
LT		 61#include <linux/module.h>
62#include <linux/types.h>
1da177e4
LT		 63#include <linux/fs.h>
64#include <linux/kernel.h>
65#include <linux/delay.h> /* MSch: for IRQ probe */
1da177e4
LT		 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 */
623e71b0 78#include <asm/fb.h>
1da177e4
LT		 79#include <asm/irq.h>
80#include <asm/system.h>
1da177e4
LT		 81
82#include "fbcon.h"
83
84#ifdef FBCONDEBUG
5ae12170 85# define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
1da177e4
LT		 86#else
87# define DPRINTK(fmt, args...)
88#endif
89
90enum {
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
ab767201 96static struct display fb_display[MAX_NR_CONSOLES];
e4fc2761 97
1da177e4
LT		 98static signed char con2fb_map[MAX_NR_CONSOLES];
99static signed char con2fb_map_boot[MAX_NR_CONSOLES];
49a1d28f 100
1da177e4
LT		 101static int logo_lines;
102/* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
103 enums. */
104static int logo_shown = FBCON_LOGO_CANSHOW;
105/* Software scrollback */
106static int fbcon_softback_size = 32768;
107static unsigned long softback_buf, softback_curr;
108static unsigned long softback_in;
109static unsigned long softback_top, softback_end;
110static int softback_lines;
111/* console mappings */
112static int first_fb_vc;
113static int last_fb_vc = MAX_NR_CONSOLES - 1;
114static int fbcon_is_default = 1;
e614b18d 115static int fbcon_has_exited;
623e71b0 116static int primary_device = -1;
2ddce3fd 117static int fbcon_has_console_bind;
4769a9a5
AD		 118
119#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
623e71b0 120static int map_override;
e614b18d 121
4769a9a5
AD		 122static inline void fbcon_map_override(void)
123{
124 map_override = 1;
125}
126#else
127static inline void fbcon_map_override(void)
128{
129}
130#endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */
131
1da177e4
LT		 132/* font data */
133static char fontname[40];
134
135/* current fb_info */
136static int info_idx = -1;
137
e4fc2761 138/* console rotation */
2428e59b 139static int initial_rotation;
0a727dea 140static int fbcon_has_sysfs;
e4fc2761 141
1da177e4
LT		 142static 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
1da177e4
LT		 148static int fbcon_set_origin(struct vc_data *);
149
150#define CURSOR_DRAW_DELAY (1)
151
1da177e4 152static int vbl_cursor_cnt;
acba9cd0 153static int fbcon_cursor_noblink;
1da177e4
LT		 154
155#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
156
157/*
158 * Interface used by the world
159 */
160
161static const char *fbcon_startup(void);
162static void fbcon_init(struct vc_data *vc, int init);
163static void fbcon_deinit(struct vc_data *vc);
164static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
165 int width);
166static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
167static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
168 int count, int ypos, int xpos);
169static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
170static void fbcon_cursor(struct vc_data *vc, int mode);
171static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
172 int count);
173static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
174 int height, int width);
175static int fbcon_switch(struct vc_data *vc);
176static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
177static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
178static int fbcon_scrolldelta(struct vc_data *vc, int lines);
179
180/*
181 * Internal routines
182 */
1da177e4
LT		 183static __inline__ void ywrap_up(struct vc_data *vc, int count);
184static __inline__ void ywrap_down(struct vc_data *vc, int count);
185static __inline__ void ypan_up(struct vc_data *vc, int count);
186static __inline__ void ypan_down(struct vc_data *vc, int count);
187static 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);
189static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
d1baa4ff 190 int unit);
1da177e4
LT		 191static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
192 int line, int count, int dy);
a812c94b
AD		 193static void fbcon_modechanged(struct fb_info *info);
194static void fbcon_set_all_vcs(struct fb_info *info);
5428b044
AD		 195static void fbcon_start(void);
196static void fbcon_exit(void);
0c6c1ce0 197static struct device *fbcon_device;
9a179176 198
dbcbfe1e 199#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
b73deed3 200static inline void fbcon_set_rotation(struct fb_info *info)
dbcbfe1e
AD		 201{
202 struct fbcon_ops *ops = info->fbcon_par;
203
204 if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
b73deed3
AD		 205 ops->p->con_rotate < 4)
206 ops->rotate = ops->p->con_rotate;
dbcbfe1e
AD		 207 else
208 ops->rotate = 0;
209}
a812c94b
AD		 210
211static 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
233static 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
e614b18d 243 for (i = first_fb_vc; i <= last_fb_vc; i++) {
a812c94b
AD		 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}
dbcbfe1e 255#else
b73deed3 256static inline void fbcon_set_rotation(struct fb_info *info)
e4fc2761
AD		 257{
258 struct fbcon_ops *ops = info->fbcon_par;
259
260 ops->rotate = FB_ROTATE_UR;
261}
a812c94b
AD		 262
263static void fbcon_rotate(struct fb_info *info, u32 rotate)
264{
265 return;
266}
267
268static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
269{
270 return;
271}
dbcbfe1e 272#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
e4fc2761 273
a812c94b
AD		 274static int fbcon_get_rotate(struct fb_info *info)
275{
276 struct fbcon_ops *ops = info->fbcon_par;
277
278 return (ops) ? ops->rotate : 0;
279}
280
1da177e4
LT		 281static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
282{
283 struct fbcon_ops *ops = info->fbcon_par;
284
285 return (info->state != FBINFO_STATE_RUNNING ||
286 vc->vc_mode != KD_TEXT || ops->graphics);
287}
288
289static inline int get_color(struct vc_data *vc, struct fb_info *info,
290 u16 c, int is_fg)
291{
b8c90945 292 int depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 293 int color = 0;
294
295 if (console_blanked) {
296 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
297
298 c = vc->vc_video_erase_char & charmask;
299 }
300
301 if (depth != 1)
302 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 switch (depth) {
306 case 1:
307 {
91c43132 308 int col = mono_col(info);
1da177e4 309 /* 0 or 1 */
b8c90945
AD		 310 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
311 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
1da177e4
LT		 312
313 if (console_blanked)
314 fg = bg;
315
316 color = (is_fg) ? fg : bg;
317 break;
318 }
319 case 2:
320 /*
321 * Scale down 16-colors to 4 colors. Default 4-color palette
2cc38ed1
AD		 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.
1da177e4 326 */
2cc38ed1
AD		 327 switch (color) {
328 case 0:
329 color = 0; /* black */
330 break;
331 case 1 ... 6:
332 color = 2; /* white */
333 break;
334 case 7 ... 8:
335 color = 1; /* gray */
336 break;
337 default:
338 color = 3; /* intense white */
339 break;
340 }
341 break;
1da177e4
LT		 342 case 3:
343 /*
344 * Last 8 entries of default 16-color palette is a more intense
345 * version of the first 8 (i.e., same chrominance, different
346 * luminance).
347 */
348 color &= 7;
349 break;
350 }
351
352
353 return color;
354}
355
4d9c5b6e
AD		 356static void fbcon_update_softback(struct vc_data *vc)
357{
358 int l = fbcon_softback_size / vc->vc_size_row;
359
360 if (l > 5)
361 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 softback_top = 0;
366}
367
c4028958 368static void fb_flashcursor(struct work_struct *work)
1da177e4 369{
c4028958 370 struct fb_info *info = container_of(work, struct fb_info, queue);
1da177e4
LT		 371 struct fbcon_ops *ops = info->fbcon_par;
372 struct display *p;
373 struct vc_data *vc = NULL;
374 int c;
375 int mode;
376
5428b044
AD		 377 acquire_console_sem();
378 if (ops && ops->currcon != -1)
1da177e4
LT		 379 vc = vc_cons[ops->currcon].d;
380
381 if (!vc || !CON_IS_VISIBLE(vc) ||
dbd4f128 382 registered_fb[con2fb_map[vc->vc_num]] != info ||
212f2639 383 vc->vc_deccm != 1) {
5428b044 384 release_console_sem();
1da177e4 385 return;
5428b044
AD		 386 }
387
1da177e4
LT		 388 p = &fb_display[vc->vc_num];
389 c = scr_readw((u16 *) vc->vc_pos);
390 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
391 CM_ERASE : CM_DRAW;
b73deed3 392 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
1da177e4
LT		 393 get_color(vc, info, c, 0));
394 release_console_sem();
395}
396
1da177e4
LT		 397static void cursor_timer_handler(unsigned long dev_addr)
398{
399 struct fb_info *info = (struct fb_info *) dev_addr;
400 struct fbcon_ops *ops = info->fbcon_par;
401
402 schedule_work(&info->queue);
403 mod_timer(&ops->cursor_timer, jiffies + HZ/5);
404}
405
88fb2c6e
AD		 406static void fbcon_add_cursor_timer(struct fb_info *info)
407{
408 struct fbcon_ops *ops = info->fbcon_par;
409
410 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
acba9cd0
AD		 411 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
412 !fbcon_cursor_noblink) {
88fb2c6e 413 if (!info->queue.func)
c4028958 414 INIT_WORK(&info->queue, fb_flashcursor);
88fb2c6e
AD		 415
416 init_timer(&ops->cursor_timer);
417 ops->cursor_timer.function = cursor_timer_handler;
418 ops->cursor_timer.expires = jiffies + HZ / 5;
419 ops->cursor_timer.data = (unsigned long ) info;
420 add_timer(&ops->cursor_timer);
421 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
422 }
423}
424
425static void fbcon_del_cursor_timer(struct fb_info *info)
426{
427 struct fbcon_ops *ops = info->fbcon_par;
428
429 if (info->queue.func == fb_flashcursor &&
430 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
431 del_timer_sync(&ops->cursor_timer);
432 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
433 }
434}
435
1da177e4
LT		 436#ifndef MODULE
437static int __init fb_console_setup(char *this_opt)
438{
439 char *options;
440 int i, j;
441
442 if (!this_opt || !*this_opt)
9b41046c 443 return 1;
1da177e4
LT		 444
445 while ((options = strsep(&this_opt, ",")) != NULL) {
446 if (!strncmp(options, "font:", 5))
447 strcpy(fontname, options + 5);
448
449 if (!strncmp(options, "scrollback:", 11)) {
450 options += 11;
451 if (*options) {
452 fbcon_softback_size = simple_strtoul(options, &options, 0);
453 if (*options == 'k' || *options == 'K') {
454 fbcon_softback_size *= 1024;
455 options++;
456 }
457 if (*options != ',')
9b41046c 458 return 1;
1da177e4
LT		 459 options++;
460 } else
9b41046c 461 return 1;
1da177e4
LT		 462 }
463
464 if (!strncmp(options, "map:", 4)) {
465 options += 4;
623e71b0 466 if (*options) {
1da177e4
LT		 467 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
468 if (!options[j])
469 j = 0;
470 con2fb_map_boot[i] =
471 (options[j++]-'0') % FB_MAX;
472 }
623e71b0 473
4769a9a5 474 fbcon_map_override();
623e71b0
AD		 475 }
476
9b41046c 477 return 1;
1da177e4
LT		 478 }
479
480 if (!strncmp(options, "vc:", 3)) {
481 options += 3;
482 if (*options)
483 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
484 if (first_fb_vc < 0)
485 first_fb_vc = 0;
486 if (*options++ == '-')
487 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
488 fbcon_is_default = 0;
489 }
e4fc2761
AD		 490
491 if (!strncmp(options, "rotate:", 7)) {
492 options += 7;
493 if (*options)
2428e59b
MS		 494 initial_rotation = simple_strtoul(options, &options, 0);
495 if (initial_rotation > 3)
496 initial_rotation = 0;
e4fc2761 497 }
1da177e4 498 }
9b41046c 499 return 1;
1da177e4
LT		 500}
501
502__setup("fbcon=", fb_console_setup);
503#endif
504
505static int search_fb_in_map(int idx)
506{
507 int i, retval = 0;
508
e614b18d 509 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 510 if (con2fb_map[i] == idx)
511 retval = 1;
512 }
513 return retval;
514}
515
516static int search_for_mapped_con(void)
517{
518 int i, retval = 0;
519
e614b18d 520 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 521 if (con2fb_map[i] != -1)
522 retval = 1;
523 }
524 return retval;
525}
526
527static int fbcon_takeover(int show_logo)
528{
529 int err, i;
530
531 if (!num_registered_fb)
532 return -ENODEV;
533
534 if (!show_logo)
535 logo_shown = FBCON_LOGO_DONTSHOW;
536
537 for (i = first_fb_vc; i <= last_fb_vc; i++)
538 con2fb_map[i] = info_idx;
539
540 err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
541 fbcon_is_default);
e614b18d 542
1da177e4
LT		 543 if (err) {
544 for (i = first_fb_vc; i <= last_fb_vc; i++) {
545 con2fb_map[i] = -1;
546 }
547 info_idx = -1;
2ddce3fd
IA		 548 } else {
549 fbcon_has_console_bind = 1;
1da177e4
LT		 550 }
551
552 return err;
553}
554
70802c60
AD		 555#ifdef MODULE
556static 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
1da177e4
LT		 562static 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 /* Need to make room for the logo */
9c44e5f6 566 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 567 int cnt, erase = vc->vc_video_erase_char, step;
568 unsigned short *save = NULL, *r, *q;
49a1d28f 569 int logo_height;
1da177e4 570
70802c60
AD		 571 if (info->flags & FBINFO_MODULE) {
572 logo_shown = FBCON_LOGO_DONTSHOW;
573 return;
574 }
575
1da177e4
LT		 576 /*
577 * remove underline attribute from erase character
578 * if black and white framebuffer.
579 */
b8c90945 580 if (fb_get_color_depth(&info->var, &info->fix) == 1)
1da177e4 581 erase &= ~0x400;
9c44e5f6 582 logo_height = fb_prepare_logo(info, ops->rotate);
416e74ea 583 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);
1da177e4
LT		 584 q = (unsigned short *) (vc->vc_origin +
585 vc->vc_size_row * rows);
586 step = logo_lines * cols;
587 for (r = q - logo_lines * cols; r < q; r++)
588 if (scr_readw(r) != vc->vc_video_erase_char)
589 break;
590 if (r != q && new_rows >= rows + logo_lines) {
591 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
592 if (save) {
593 int i = cols < new_cols ? cols : new_cols;
594 scr_memsetw(save, erase, logo_lines * new_cols * 2);
595 r = q - step;
596 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
597 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
598 r = q;
599 }
600 }
601 if (r == q) {
602 /* We can scroll screen down */
603 r = q - step - cols;
604 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
605 scr_memcpyw(r + step, r, vc->vc_size_row);
606 r -= cols;
607 }
608 if (!save) {
250038f5
GU		 609 int lines;
610 if (vc->vc_y + logo_lines >= rows)
611 lines = rows - vc->vc_y - 1;
612 else
613 lines = logo_lines;
614 vc->vc_y += lines;
615 vc->vc_pos += lines * vc->vc_size_row;
1da177e4
LT		 616 }
617 }
618 scr_memsetw((unsigned short *) vc->vc_origin,
619 erase,
620 vc->vc_size_row * logo_lines);
621
622 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
623 fbcon_clear_margins(vc, 0);
624 update_screen(vc);
625 }
626
627 if (save) {
628 q = (unsigned short *) (vc->vc_origin +
629 vc->vc_size_row *
630 rows);
631 scr_memcpyw(q, save, logo_lines * new_cols * 2);
632 vc->vc_y += logo_lines;
633 vc->vc_pos += logo_lines * vc->vc_size_row;
634 kfree(save);
635 }
636
637 if (logo_lines > vc->vc_bottom) {
638 logo_shown = FBCON_LOGO_CANSHOW;
639 printk(KERN_INFO
640 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
641 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
642 logo_shown = FBCON_LOGO_DRAW;
643 vc->vc_top = logo_lines;
644 }
645}
70802c60 646#endif /* MODULE */
1da177e4
LT		 647
648#ifdef CONFIG_FB_TILEBLITTING
b73deed3 649static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 650{
651 struct fbcon_ops *ops = info->fbcon_par;
652
b73deed3 653 ops->p = &fb_display[vc->vc_num];
ab767201 654
1da177e4 655 if ((info->flags & FBINFO_MISC_TILEBLITTING))
b73deed3 656 fbcon_set_tileops(vc, info);
e4fc2761 657 else {
b73deed3 658 fbcon_set_rotation(info);
1da177e4 659 fbcon_set_bitops(ops);
e4fc2761 660 }
1da177e4 661}
38b4982c
AD		 662
663static 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}
1da177e4 673#else
b73deed3 674static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 675{
676 struct fbcon_ops *ops = info->fbcon_par;
677
678 info->flags &= ~FBINFO_MISC_TILEBLITTING;
b73deed3
AD		 679 ops->p = &fb_display[vc->vc_num];
680 fbcon_set_rotation(info);
1da177e4
LT		 681 fbcon_set_bitops(ops);
682}
38b4982c
AD		 683
684static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
685{
686 return 0;
687}
688
1da177e4
LT		 689#endif /* CONFIG_MISC_TILEBLITTING */
690
691
692static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
693 int unit, int oldidx)
694{
695 struct fbcon_ops *ops = NULL;
696 int err = 0;
697
698 if (!try_module_get(info->fbops->owner))
699 err = -ENODEV;
700
701 if (!err && info->fbops->fb_open &&
702 info->fbops->fb_open(info, 0))
703 err = -ENODEV;
704
705 if (!err) {
a39bc34e 706 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 707 if (!ops)
708 err = -ENOMEM;
709 }
710
711 if (!err) {
1da177e4 712 info->fbcon_par = ops;
d1baa4ff
AD		 713
714 if (vc)
715 set_blitting_type(vc, info);
1da177e4
LT		 716 }
717
718 if (err) {
719 con2fb_map[unit] = oldidx;
720 module_put(info->fbops->owner);
721 }
722
723 return err;
724}
725
726static 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{
730 struct fbcon_ops *ops = oldinfo->fbcon_par;
0fcf6ada 731 int err = 0, ret;
1da177e4
LT		 732
733 if (oldinfo->fbops->fb_release &&
734 oldinfo->fbops->fb_release(oldinfo, 0)) {
735 con2fb_map[unit] = oldidx;
736 if (!found && newinfo->fbops->fb_release)
737 newinfo->fbops->fb_release(newinfo, 0);
738 if (!found)
739 module_put(newinfo->fbops->owner);
740 err = -ENODEV;
741 }
742
743 if (!err) {
88fb2c6e 744 fbcon_del_cursor_timer(oldinfo);
1da177e4
LT		 745 kfree(ops->cursor_state.mask);
746 kfree(ops->cursor_data);
e4fc2761 747 kfree(ops->fontbuffer);
1da177e4
LT		 748 kfree(oldinfo->fbcon_par);
749 oldinfo->fbcon_par = NULL;
750 module_put(oldinfo->fbops->owner);
dd0314f7
AD		 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 */
0fcf6ada
FTS		 758 if (newinfo->fbops->fb_set_par) {
759 ret = newinfo->fbops->fb_set_par(newinfo);
760
761 if (ret)
762 printk(KERN_ERR "con2fb_release_oldinfo: "
763 "detected unhandled fb_set_par error, "
764 "error code %d\n", ret);
765 }
1da177e4
LT		 766 }
767
768 return err;
769}
770
1da177e4
LT		 771static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
772 int unit, int show_logo)
773{
774 struct fbcon_ops *ops = info->fbcon_par;
0fcf6ada 775 int ret;
1da177e4
LT		 776
777 ops->currcon = fg_console;
778
0fcf6ada
FTS		 779 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) {
780 ret = info->fbops->fb_set_par(info);
781
782 if (ret)
783 printk(KERN_ERR "con2fb_init_display: detected "
784 "unhandled fb_set_par error, "
785 "error code %d\n", ret);
786 }
1da177e4
LT		 787
788 ops->flags |= FBCON_FLAGS_INIT;
789 ops->graphics = 0;
d1baa4ff 790 fbcon_set_disp(info, &info->var, unit);
1da177e4
LT		 791
792 if (show_logo) {
793 struct vc_data *fg_vc = vc_cons[fg_console].d;
794 struct fb_info *fg_info =
795 registered_fb[con2fb_map[fg_console]];
796
797 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 update_screen(vc_cons[fg_console].d);
803}
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 */
814static int set_con2fb_map(int unit, int newidx, int user)
815{
816 struct vc_data *vc = vc_cons[unit].d;
817 int oldidx = con2fb_map[unit];
818 struct fb_info *info = registered_fb[newidx];
819 struct fb_info *oldinfo = NULL;
820 int found, err = 0;
821
822 if (oldidx == newidx)
823 return 0;
824
e614b18d
AD		 825 if (!info || fbcon_has_exited)
826 return -EINVAL;
1da177e4
LT		 827
828 if (!err && !search_for_mapped_con()) {
829 info_idx = newidx;
830 return fbcon_takeover(0);
831 }
832
833 if (oldidx != -1)
834 oldinfo = registered_fb[oldidx];
835
836 found = search_fb_in_map(newidx);
837
838 acquire_console_sem();
839 con2fb_map[unit] = newidx;
840 if (!err && !found)
841 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 if (!err && oldinfo && !search_fb_in_map(oldidx))
849 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
850 found);
851
852 if (!err) {
853 int show_logo = (fg_console == 0 && !user &&
854 logo_shown != FBCON_LOGO_DONTSHOW);
855
856 if (!found)
88fb2c6e 857 fbcon_add_cursor_timer(info);
1da177e4
LT		 858 con2fb_map_boot[unit] = newidx;
859 con2fb_init_display(vc, info, unit, show_logo);
860 }
861
e614b18d
AD		 862 if (!search_fb_in_map(info_idx))
863 info_idx = newidx;
864
1da177e4
LT		 865 release_console_sem();
866 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 */
873static int var_to_display(struct display *disp,
874 struct fb_var_screeninfo *var,
875 struct fb_info *info)
876{
877 disp->xres_virtual = var->xres_virtual;
878 disp->yres_virtual = var->yres_virtual;
879 disp->bits_per_pixel = var->bits_per_pixel;
880 disp->grayscale = var->grayscale;
881 disp->nonstd = var->nonstd;
882 disp->accel_flags = var->accel_flags;
883 disp->height = var->height;
884 disp->width = var->width;
885 disp->red = var->red;
886 disp->green = var->green;
887 disp->blue = var->blue;
888 disp->transp = var->transp;
889 disp->rotate = var->rotate;
890 disp->mode = fb_match_mode(var, &info->modelist);
891 if (disp->mode == NULL)
892 /* This should not happen */
893 return -EINVAL;
894 return 0;
895}
896
897static void display_to_var(struct fb_var_screeninfo *var,
898 struct display *disp)
899{
900 fb_videomode_to_var(var, disp->mode);
901 var->xres_virtual = disp->xres_virtual;
902 var->yres_virtual = disp->yres_virtual;
903 var->bits_per_pixel = disp->bits_per_pixel;
904 var->grayscale = disp->grayscale;
905 var->nonstd = disp->nonstd;
906 var->accel_flags = disp->accel_flags;
907 var->height = disp->height;
908 var->width = disp->width;
909 var->red = disp->red;
910 var->green = disp->green;
911 var->blue = disp->blue;
912 var->transp = disp->transp;
913 var->rotate = disp->rotate;
914}
915
916static const char *fbcon_startup(void)
917{
918 const char *display_desc = "frame buffer device";
919 struct display *p = &fb_display[fg_console];
920 struct vc_data *vc = vc_cons[fg_console].d;
2f4516db 921 const struct font_desc *font = NULL;
1da177e4
LT		 922 struct module *owner;
923 struct fb_info *info = NULL;
924 struct fbcon_ops *ops;
925 int rows, cols;
1da177e4 926
1da177e4
LT		 927 /*
928 * If num_registered_fb is zero, this is a call for the dummy part.
929 * The frame buffer devices weren't initialized yet.
930 */
931 if (!num_registered_fb || info_idx == -1)
932 return display_desc;
933 /*
934 * Instead of blindly using registered_fb[0], we use info_idx, set by
935 * fb_console_init();
936 */
937 info = registered_fb[info_idx];
938 if (!info)
939 return NULL;
940
941 owner = info->fbops->owner;
942 if (!try_module_get(owner))
943 return NULL;
944 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
945 module_put(owner);
946 return NULL;
947 }
948
a39bc34e 949 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 950 if (!ops) {
951 module_put(owner);
952 return NULL;
953 }
954
1da177e4
LT		 955 ops->currcon = -1;
956 ops->graphics = 1;
e4fc2761 957 ops->cur_rotate = -1;
1da177e4 958 info->fbcon_par = ops;
2428e59b 959 p->con_rotate = initial_rotation;
b73deed3 960 set_blitting_type(vc, info);
1da177e4
LT		 961
962 if (info->fix.type != FB_TYPE_TEXT) {
963 if (fbcon_softback_size) {
964 if (!softback_buf) {
965 softback_buf =
966 (unsigned long)
967 kmalloc(fbcon_softback_size,
968 GFP_KERNEL);
969 if (!softback_buf) {
970 fbcon_softback_size = 0;
971 softback_top = 0;
972 }
973 }
974 } else {
975 if (softback_buf) {
976 kfree((void *) softback_buf);
977 softback_buf = 0;
978 softback_top = 0;
979 }
980 }
981 if (softback_buf)
982 softback_in = softback_top = softback_curr =
983 softback_buf;
984 softback_lines = 0;
985 }
986
987 /* Setup default font */
988 if (!p->fontdata) {
989 if (!fontname[0] || !(font = find_font(fontname)))
990 font = get_default_font(info->var.xres,
2d2699d9
AD		 991 info->var.yres,
992 info->pixmap.blit_x,
993 info->pixmap.blit_y);
1da177e4
LT		 994 vc->vc_font.width = font->width;
995 vc->vc_font.height = font->height;
2f4516db 996 vc->vc_font.data = (void *)(p->fontdata = font->data);
1da177e4
LT		 997 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
998 }
999
e4fc2761
AD		 1000 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1001 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1002 cols /= vc->vc_font.width;
1003 rows /= vc->vc_font.height;
1da177e4
LT		 1004 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
88fb2c6e 1012 fbcon_add_cursor_timer(info);
e614b18d 1013 fbcon_has_exited = 0;
1da177e4
LT		 1014 return display_desc;
1015}
1016
1017static void fbcon_init(struct vc_data *vc, int init)
1018{
1019 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1020 struct fbcon_ops *ops;
1021 struct vc_data **default_mode = vc->vc_display_fg;
1022 struct vc_data *svc = *default_mode;
1023 struct display *t, *p = &fb_display[vc->vc_num];
1024 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
0fcf6ada 1025 int cap, ret;
1da177e4
LT		 1026
1027 if (info_idx == -1 || info == NULL)
1028 return;
306958e8
AB		 1029
1030 cap = info->flags;
1031
1da177e4
LT		 1032 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1033 (info->fix.type == FB_TYPE_TEXT))
1034 logo = 0;
1035
1da177e4
LT		 1036 if (var_to_display(p, &info->var, info))
1037 return;
1038
d1baa4ff
AD		 1039 if (!info->fbcon_par)
1040 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
1041
1da177e4
LT		 1042 /* If we are not the first console on this
1043 fb, copy the font from that console */
e614b18d
AD		 1044 t = &fb_display[fg_console];
1045 if (!p->fontdata) {
1046 if (t->fontdata) {
1047 struct vc_data *fvc = vc_cons[fg_console].d;
1048
1049 vc->vc_font.data = (void *)(p->fontdata =
1050 fvc->vc_font.data);
1051 vc->vc_font.width = fvc->vc_font.width;
1052 vc->vc_font.height = fvc->vc_font.height;
1053 p->userfont = t->userfont;
1054
1055 if (p->userfont)
1056 REFCOUNT(p->fontdata)++;
1057 } else {
1058 const struct font_desc *font = NULL;
1059
1060 if (!fontname[0] || !(font = find_font(fontname)))
1061 font = get_default_font(info->var.xres,
2d2699d9
AD		 1062 info->var.yres,
1063 info->pixmap.blit_x,
1064 info->pixmap.blit_y);
e614b18d
AD		 1065 vc->vc_font.width = font->width;
1066 vc->vc_font.height = font->height;
1067 vc->vc_font.data = (void *)(p->fontdata = font->data);
1068 vc->vc_font.charcount = 256; /* FIXME Need to
1069 support more fonts */
1070 }
1da177e4 1071 }
e614b18d 1072
1da177e4
LT		 1073 if (p->userfont)
1074 charcnt = FNTCHARCNT(p->fontdata);
e614b18d 1075
b8c90945 1076 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1077 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1078 if (charcnt == 256) {
1079 vc->vc_hi_font_mask = 0;
1080 } else {
1081 vc->vc_hi_font_mask = 0x100;
1082 if (vc->vc_can_do_color)
1083 vc->vc_complement_mask <<= 1;
1084 }
1085
1086 if (!*svc->vc_uni_pagedir_loc)
1087 con_set_default_unimap(svc);
1088 if (!*vc->vc_uni_pagedir_loc)
1089 con_copy_unimap(vc, svc);
1090
e4fc2761 1091 ops = info->fbcon_par;
2428e59b 1092 p->con_rotate = initial_rotation;
b73deed3 1093 set_blitting_type(vc, info);
e4fc2761 1094
1da177e4
LT		 1095 cols = vc->vc_cols;
1096 rows = vc->vc_rows;
e4fc2761
AD		 1097 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1098 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1099 new_cols /= vc->vc_font.width;
1100 new_rows /= vc->vc_font.height;
1da177e4 1101
1da177e4
LT		 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 */
d354d9af 1109 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
1da177e4 1110 if (info->fbops->fb_set_par &&
0fcf6ada
FTS		 1111 !(ops->flags & FBCON_FLAGS_INIT)) {
1112 ret = info->fbops->fb_set_par(info);
1113
1114 if (ret)
1115 printk(KERN_ERR "fbcon_init: detected "
1116 "unhandled fb_set_par error, "
1117 "error code %d\n", ret);
1118 }
1119
1da177e4
LT		 1120 ops->flags |= FBCON_FLAGS_INIT;
1121 }
1122
1123 ops->graphics = 0;
1124
1125 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1126 !(cap & FBINFO_HWACCEL_DISABLED))
1127 p->scrollmode = SCROLL_MOVE;
1128 else /* default to something safe */
1129 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 */
0035fe00 1136 if (init) {
1da177e4
LT		 1137 vc->vc_cols = new_cols;
1138 vc->vc_rows = new_rows;
0035fe00
JW		 1139 } else
1140 vc_resize(vc, new_cols, new_rows);
1da177e4
LT		 1141
1142 if (logo)
1143 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1144
4d9c5b6e
AD		 1145 if (vc == svc && softback_buf)
1146 fbcon_update_softback(vc);
e4fc2761 1147
b73deed3 1148 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 1149 ops->rotate = FB_ROTATE_UR;
b73deed3 1150 set_blitting_type(vc, info);
e4fc2761
AD		 1151 }
1152
1a37d5f5 1153 ops->p = &fb_display[fg_console];
1da177e4
LT		 1154}
1155
e614b18d
AD		 1156static void fbcon_free_font(struct display *p)
1157{
1158 if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
1159 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1160 p->fontdata = NULL;
1161 p->userfont = 0;
1162}
1163
1da177e4
LT		 1164static void fbcon_deinit(struct vc_data *vc)
1165{
1166 struct display *p = &fb_display[vc->vc_num];
e614b18d
AD		 1167 struct fb_info *info;
1168 struct fbcon_ops *ops;
1169 int idx;
1da177e4 1170
1da177e4 1171 fbcon_free_font(p);
e614b18d
AD		 1172 idx = con2fb_map[vc->vc_num];
1173
1174 if (idx == -1)
1175 goto finished;
1176
1177 info = registered_fb[idx];
1178
1179 if (!info)
1180 goto finished;
1181
1182 ops = info->fbcon_par;
1183
1184 if (!ops)
1185 goto finished;
1186
1187 if (CON_IS_VISIBLE(vc))
1188 fbcon_del_cursor_timer(info);
1189
1190 ops->flags &= ~FBCON_FLAGS_INIT;
1191finished:
1192
1193 if (!con_is_bound(&fb_con))
1194 fbcon_exit();
1195
1196 return;
1da177e4
LT		 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
1da177e4
LT		 1224static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1225 int width)
1226{
1227 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1228 struct fbcon_ops *ops = info->fbcon_par;
1229
1230 struct display *p = &fb_display[vc->vc_num];
1231 u_int y_break;
1232
1233 if (fbcon_is_inactive(vc, info))
1234 return;
1235
1236 if (!height || !width)
1237 return;
1238
c213ddf3
KH		 1239 if (sy < vc->vc_top && vc->vc_top == logo_lines)
1240 vc->vc_top = 0;
1241
1da177e4
LT		 1242 /* Split blits that cross physical y_wrap boundary */
1243
1244 y_break = p->vrows - p->yscroll;
1245 if (sy < y_break && sy + height - 1 >= y_break) {
1246 u_int b = y_break - sy;
1247 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1248 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1249 width);
1250 } else
1251 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1252}
1253
1254static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1255 int count, int ypos, int xpos)
1256{
1257 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1258 struct display *p = &fb_display[vc->vc_num];
1259 struct fbcon_ops *ops = info->fbcon_par;
1260
1261 if (!fbcon_is_inactive(vc, info))
1262 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1263 get_color(vc, info, scr_readw(s), 1),
1264 get_color(vc, info, scr_readw(s), 0));
1265}
1266
1267static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1268{
1269 unsigned short chr;
1270
1271 scr_writew(c, &chr);
1272 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1273}
1274
1275static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1276{
1277 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1278 struct fbcon_ops *ops = info->fbcon_par;
1279
1280 if (!fbcon_is_inactive(vc, info))
1281 ops->clear_margins(vc, info, bottom_only);
1282}
1283
1284static void fbcon_cursor(struct vc_data *vc, int mode)
1285{
1286 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1287 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1288 int y;
1289 int c = scr_readw((u16 *) vc->vc_pos);
1290
d1e23066 1291 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1da177e4
LT		 1292 return;
1293
acba9cd0
AD		 1294 if (vc->vc_cursor_type & 0x10)
1295 fbcon_del_cursor_timer(info);
1296 else
1297 fbcon_add_cursor_timer(info);
1298
1da177e4
LT		 1299 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1300 if (mode & CM_SOFTBACK) {
1301 mode &= ~CM_SOFTBACK;
1302 y = softback_lines;
1303 } else {
1304 if (softback_lines)
1305 fbcon_set_origin(vc);
1306 y = 0;
1307 }
1308
b73deed3 1309 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1da177e4
LT		 1310 get_color(vc, info, c, 0));
1311 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1312}
1313
1314static int scrollback_phys_max = 0;
1315static int scrollback_max = 0;
1316static int scrollback_current = 0;
1317
1da177e4 1318static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
d1baa4ff 1319 int unit)
1da177e4 1320{
d1baa4ff
AD		 1321 struct display *p, *t;
1322 struct vc_data **default_mode, *vc;
1323 struct vc_data *svc;
e4fc2761 1324 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1325 int rows, cols, charcnt = 256;
1326
d1baa4ff
AD		 1327 p = &fb_display[unit];
1328
1da177e4
LT		 1329 if (var_to_display(p, var, info))
1330 return;
d1baa4ff
AD		 1331
1332 vc = vc_cons[unit].d;
1333
1334 if (!vc)
1335 return;
1336
1337 default_mode = vc->vc_display_fg;
1338 svc = *default_mode;
1da177e4 1339 t = &fb_display[svc->vc_num];
d1baa4ff 1340
1da177e4 1341 if (!vc->vc_font.data) {
2f4516db 1342 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1da177e4
LT		 1343 vc->vc_font.width = (*default_mode)->vc_font.width;
1344 vc->vc_font.height = (*default_mode)->vc_font.height;
1345 p->userfont = t->userfont;
1346 if (p->userfont)
1347 REFCOUNT(p->fontdata)++;
1348 }
1349 if (p->userfont)
1350 charcnt = FNTCHARCNT(p->fontdata);
1351
b8c90945
AD		 1352 var->activate = FB_ACTIVATE_NOW;
1353 info->var.activate = var->activate;
e4fc2761
AD		 1354 var->yoffset = info->var.yoffset;
1355 var->xoffset = info->var.xoffset;
b8c90945 1356 fb_set_var(info, var);
e4fc2761 1357 ops->var = info->var;
b8c90945 1358 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1359 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1360 if (charcnt == 256) {
1361 vc->vc_hi_font_mask = 0;
1362 } else {
1363 vc->vc_hi_font_mask = 0x100;
1364 if (vc->vc_can_do_color)
1365 vc->vc_complement_mask <<= 1;
1366 }
1367
1368 if (!*svc->vc_uni_pagedir_loc)
1369 con_set_default_unimap(svc);
1370 if (!*vc->vc_uni_pagedir_loc)
1371 con_copy_unimap(vc, svc);
1372
e4fc2761
AD		 1373 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1374 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1375 cols /= vc->vc_font.width;
1376 rows /= vc->vc_font.height;
1da177e4 1377 vc_resize(vc, cols, rows);
e4fc2761 1378
1da177e4
LT		 1379 if (CON_IS_VISIBLE(vc)) {
1380 update_screen(vc);
4d9c5b6e
AD		 1381 if (softback_buf)
1382 fbcon_update_softback(vc);
1da177e4
LT		 1383 }
1384}
1385
1386static __inline__ void ywrap_up(struct vc_data *vc, int count)
1387{
1388 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1389 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1390 struct display *p = &fb_display[vc->vc_num];
1391
1392 p->yscroll += count;
1393 if (p->yscroll >= p->vrows) /* Deal with wrap */
1394 p->yscroll -= p->vrows;
e4fc2761
AD		 1395 ops->var.xoffset = 0;
1396 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1397 ops->var.vmode |= FB_VMODE_YWRAP;
1398 ops->update_start(info);
1da177e4
LT		 1399 scrollback_max += count;
1400 if (scrollback_max > scrollback_phys_max)
1401 scrollback_max = scrollback_phys_max;
1402 scrollback_current = 0;
1403}
1404
1405static __inline__ void ywrap_down(struct vc_data *vc, int count)
1406{
1407 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1408 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1409 struct display *p = &fb_display[vc->vc_num];
1410
1411 p->yscroll -= count;
1412 if (p->yscroll < 0) /* Deal with wrap */
1413 p->yscroll += p->vrows;
e4fc2761
AD		 1414 ops->var.xoffset = 0;
1415 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1416 ops->var.vmode |= FB_VMODE_YWRAP;
1417 ops->update_start(info);
1da177e4
LT		 1418 scrollback_max -= count;
1419 if (scrollback_max < 0)
1420 scrollback_max = 0;
1421 scrollback_current = 0;
1422}
1423
1424static __inline__ void ypan_up(struct vc_data *vc, int count)
1425{
1426 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1427 struct display *p = &fb_display[vc->vc_num];
1428 struct fbcon_ops *ops = info->fbcon_par;
1429
1430 p->yscroll += count;
1431 if (p->yscroll > p->vrows - vc->vc_rows) {
1432 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1433 0, 0, 0, vc->vc_rows, vc->vc_cols);
1434 p->yscroll -= p->vrows - vc->vc_rows;
1435 }
e4fc2761
AD		 1436
1437 ops->var.xoffset = 0;
1438 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1439 ops->var.vmode &= ~FB_VMODE_YWRAP;
1440 ops->update_start(info);
1da177e4
LT		 1441 fbcon_clear_margins(vc, 1);
1442 scrollback_max += count;
1443 if (scrollback_max > scrollback_phys_max)
1444 scrollback_max = scrollback_phys_max;
1445 scrollback_current = 0;
1446}
1447
1448static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1449{
1450 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1451 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1452 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1453
1454 p->yscroll += count;
a39bc34e 1455
1da177e4
LT		 1456 if (p->yscroll > p->vrows - vc->vc_rows) {
1457 p->yscroll -= p->vrows - vc->vc_rows;
1da177e4 1458 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
a39bc34e 1459 }
e4fc2761
AD		 1460
1461 ops->var.xoffset = 0;
1462 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1463 ops->var.vmode &= ~FB_VMODE_YWRAP;
1464 ops->update_start(info);
1da177e4
LT		 1465 fbcon_clear_margins(vc, 1);
1466 scrollback_max += count;
1467 if (scrollback_max > scrollback_phys_max)
1468 scrollback_max = scrollback_phys_max;
1469 scrollback_current = 0;
1470}
1471
1472static __inline__ void ypan_down(struct vc_data *vc, int count)
1473{
1474 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1475 struct display *p = &fb_display[vc->vc_num];
1476 struct fbcon_ops *ops = info->fbcon_par;
1477
1478 p->yscroll -= count;
1479 if (p->yscroll < 0) {
1480 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1481 0, vc->vc_rows, vc->vc_cols);
1482 p->yscroll += p->vrows - vc->vc_rows;
1483 }
e4fc2761
AD		 1484
1485 ops->var.xoffset = 0;
1486 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1487 ops->var.vmode &= ~FB_VMODE_YWRAP;
1488 ops->update_start(info);
1da177e4
LT		 1489 fbcon_clear_margins(vc, 1);
1490 scrollback_max -= count;
1491 if (scrollback_max < 0)
1492 scrollback_max = 0;
1493 scrollback_current = 0;
1494}
1495
1496static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1497{
1498 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1499 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1500 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1501
1502 p->yscroll -= count;
a39bc34e 1503
1da177e4
LT		 1504 if (p->yscroll < 0) {
1505 p->yscroll += p->vrows - vc->vc_rows;
1da177e4 1506 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
a39bc34e 1507 }
e4fc2761
AD		 1508
1509 ops->var.xoffset = 0;
1510 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1511 ops->var.vmode &= ~FB_VMODE_YWRAP;
1512 ops->update_start(info);
1da177e4
LT		 1513 fbcon_clear_margins(vc, 1);
1514 scrollback_max -= count;
1515 if (scrollback_max < 0)
1516 scrollback_max = 0;
1517 scrollback_current = 0;
1518}
1519
1520static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1521 long delta)
1522{
1523 int count = vc->vc_rows;
1524 unsigned short *d, *s;
1525 unsigned long n;
1526 int line = 0;
1527
1528 d = (u16 *) softback_curr;
1529 if (d == (u16 *) softback_in)
1530 d = (u16 *) vc->vc_origin;
1531 n = softback_curr + delta * vc->vc_size_row;
1532 softback_lines -= delta;
1533 if (delta < 0) {
1534 if (softback_curr < softback_top && n < softback_buf) {
1535 n += softback_end - softback_buf;
1536 if (n < softback_top) {
1537 softback_lines -=
1538 (softback_top - n) / vc->vc_size_row;
1539 n = softback_top;
1540 }
1541 } else if (softback_curr >= softback_top
1542 && n < softback_top) {
1543 softback_lines -=
1544 (softback_top - n) / vc->vc_size_row;
1545 n = softback_top;
1546 }
1547 } else {
1548 if (softback_curr > softback_in && n >= softback_end) {
1549 n += softback_buf - softback_end;
1550 if (n > softback_in) {
1551 n = softback_in;
1552 softback_lines = 0;
1553 }
1554 } else if (softback_curr <= softback_in && n > softback_in) {
1555 n = softback_in;
1556 softback_lines = 0;
1557 }
1558 }
1559 if (n == softback_curr)
1560 return;
1561 softback_curr = n;
1562 s = (u16 *) softback_curr;
1563 if (s == (u16 *) softback_in)
1564 s = (u16 *) vc->vc_origin;
1565 while (count--) {
1566 unsigned short *start;
1567 unsigned short *le;
1568 unsigned short c;
1569 int x = 0;
1570 unsigned short attr = 1;
1571
1572 start = s;
1573 le = advance_row(s, 1);
1574 do {
1575 c = scr_readw(s);
1576 if (attr != (c & 0xff00)) {
1577 attr = c & 0xff00;
1578 if (s > start) {
1579 fbcon_putcs(vc, start, s - start,
1580 line, x);
1581 x += s - start;
1582 start = s;
1583 }
1584 }
1585 if (c == scr_readw(d)) {
1586 if (s > start) {
1587 fbcon_putcs(vc, start, s - start,
1588 line, x);
1589 x += s - start + 1;
1590 start = s + 1;
1591 } else {
1592 x++;
1593 start++;
1594 }
1595 }
1596 s++;
1597 d++;
1598 } while (s < le);
1599 if (s > start)
1600 fbcon_putcs(vc, start, s - start, line, x);
1601 line++;
1602 if (d == (u16 *) softback_end)
1603 d = (u16 *) softback_buf;
1604 if (d == (u16 *) softback_in)
1605 d = (u16 *) vc->vc_origin;
1606 if (s == (u16 *) softback_end)
1607 s = (u16 *) softback_buf;
1608 if (s == (u16 *) softback_in)
1609 s = (u16 *) vc->vc_origin;
1610 }
1611}
1612
1613static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1614 int line, int count, int dy)
1615{
1616 unsigned short *s = (unsigned short *)
1617 (vc->vc_origin + vc->vc_size_row * line);
1618
1619 while (count--) {
1620 unsigned short *start = s;
1621 unsigned short *le = advance_row(s, 1);
1622 unsigned short c;
1623 int x = 0;
1624 unsigned short attr = 1;
1625
1626 do {
1627 c = scr_readw(s);
1628 if (attr != (c & 0xff00)) {
1629 attr = c & 0xff00;
1630 if (s > start) {
1631 fbcon_putcs(vc, start, s - start,
1632 dy, x);
1633 x += s - start;
1634 start = s;
1635 }
1636 }
1637 console_conditional_schedule();
1638 s++;
1639 } while (s < le);
1640 if (s > start)
1641 fbcon_putcs(vc, start, s - start, dy, x);
1642 console_conditional_schedule();
1643 dy++;
1644 }
1645}
1646
bad07ff7
KH		 1647static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1648 struct display *p, int line, int count, int ycount)
1649{
1650 int offset = ycount * vc->vc_cols;
1651 unsigned short *d = (unsigned short *)
1652 (vc->vc_origin + vc->vc_size_row * line);
1653 unsigned short *s = d + offset;
1654 struct fbcon_ops *ops = info->fbcon_par;
1655
1656 while (count--) {
1657 unsigned short *start = s;
1658 unsigned short *le = advance_row(s, 1);
1659 unsigned short c;
1660 int x = 0;
1661
1662 do {
1663 c = scr_readw(s);
1664
1665 if (c == scr_readw(d)) {
1666 if (s > start) {
1667 ops->bmove(vc, info, line + ycount, x,
1668 line, x, 1, s-start);
1669 x += s - start + 1;
1670 start = s + 1;
1671 } else {
1672 x++;
1673 start++;
1674 }
1675 }
1676
1677 scr_writew(c, d);
1678 console_conditional_schedule();
1679 s++;
1680 d++;
1681 } while (s < le);
1682 if (s > start)
1683 ops->bmove(vc, info, line + ycount, x, line, x, 1,
1684 s-start);
1685 console_conditional_schedule();
1686 if (ycount > 0)
1687 line++;
1688 else {
1689 line--;
1690 /* NOTE: We subtract two lines from these pointers */
1691 s -= vc->vc_size_row;
1692 d -= vc->vc_size_row;
1693 }
1694 }
1695}
1696
1da177e4
LT		 1697static void fbcon_redraw(struct vc_data *vc, struct display *p,
1698 int line, int count, int offset)
1699{
1700 unsigned short *d = (unsigned short *)
1701 (vc->vc_origin + vc->vc_size_row * line);
1702 unsigned short *s = d + offset;
1703
1704 while (count--) {
1705 unsigned short *start = s;
1706 unsigned short *le = advance_row(s, 1);
1707 unsigned short c;
1708 int x = 0;
1709 unsigned short attr = 1;
1710
1711 do {
1712 c = scr_readw(s);
1713 if (attr != (c & 0xff00)) {
1714 attr = c & 0xff00;
1715 if (s > start) {
1716 fbcon_putcs(vc, start, s - start,
1717 line, x);
1718 x += s - start;
1719 start = s;
1720 }
1721 }
1722 if (c == scr_readw(d)) {
1723 if (s > start) {
1724 fbcon_putcs(vc, start, s - start,
1725 line, x);
1726 x += s - start + 1;
1727 start = s + 1;
1728 } else {
1729 x++;
1730 start++;
1731 }
1732 }
1733 scr_writew(c, d);
1734 console_conditional_schedule();
1735 s++;
1736 d++;
1737 } while (s < le);
1738 if (s > start)
1739 fbcon_putcs(vc, start, s - start, line, x);
1740 console_conditional_schedule();
1741 if (offset > 0)
1742 line++;
1743 else {
1744 line--;
1745 /* NOTE: We subtract two lines from these pointers */
1746 s -= vc->vc_size_row;
1747 d -= vc->vc_size_row;
1748 }
1749 }
1750}
1751
1752static inline void fbcon_softback_note(struct vc_data *vc, int t,
1753 int count)
1754{
1755 unsigned short *p;
1756
1757 if (vc->vc_num != fg_console)
1758 return;
1759 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1760
1761 while (count) {
1762 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1763 count--;
1764 p = advance_row(p, 1);
1765 softback_in += vc->vc_size_row;
1766 if (softback_in == softback_end)
1767 softback_in = softback_buf;
1768 if (softback_in == softback_top) {
1769 softback_top += vc->vc_size_row;
1770 if (softback_top == softback_end)
1771 softback_top = softback_buf;
1772 }
1773 }
1774 softback_curr = softback_in;
1775}
1776
1777static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1778 int count)
1779{
1780 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1781 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1782 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1783
1784 if (fbcon_is_inactive(vc, info))
1785 return -EINVAL;
1786
1787 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 switch (dir) {
1796 case SM_UP:
1797 if (count > vc->vc_rows) /* Maximum realistic size */
1798 count = vc->vc_rows;
1799 if (softback_top)
1800 fbcon_softback_note(vc, t, count);
1801 if (logo_shown >= 0)
1802 goto redraw_up;
1803 switch (p->scrollmode) {
1804 case SCROLL_MOVE:
bad07ff7
KH		 1805 fbcon_redraw_blit(vc, info, p, t, b - t - count,
1806 count);
1807 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1808 scr_memsetw((unsigned short *) (vc->vc_origin +
1809 vc->vc_size_row *
1810 (b - count)),
93f78da4 1811 vc->vc_video_erase_char,
bad07ff7 1812 vc->vc_size_row * count);
93f78da4 1813 return 1;
1da177e4
LT		 1814 break;
1815
1816 case SCROLL_WRAP_MOVE:
1817 if (b - t - count > 3 * vc->vc_rows >> 2) {
1818 if (t > 0)
1819 fbcon_bmove(vc, 0, 0, count, 0, t,
1820 vc->vc_cols);
1821 ywrap_up(vc, count);
1822 if (vc->vc_rows - b > 0)
1823 fbcon_bmove(vc, b - count, 0, b, 0,
1824 vc->vc_rows - b,
1825 vc->vc_cols);
1826 } else if (info->flags & FBINFO_READS_FAST)
1827 fbcon_bmove(vc, t + count, 0, t, 0,
1828 b - t - count, vc->vc_cols);
1829 else
1830 goto redraw_up;
1831 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1832 break;
1833
1834 case SCROLL_PAN_REDRAW:
1835 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 if (t > 0)
1842 fbcon_redraw_move(vc, p, 0, t, count);
1843 ypan_up_redraw(vc, t, count);
1844 if (vc->vc_rows - b > 0)
26e780e8 1845 fbcon_redraw_move(vc, p, b,
1da177e4
LT		 1846 vc->vc_rows - b, b);
1847 } else
1848 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1849 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1850 break;
1851
1852 case SCROLL_PAN_MOVE:
1853 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 if (t > 0)
1860 fbcon_bmove(vc, 0, 0, count, 0, t,
1861 vc->vc_cols);
1862 ypan_up(vc, count);
1863 if (vc->vc_rows - b > 0)
1864 fbcon_bmove(vc, b - count, 0, b, 0,
1865 vc->vc_rows - b,
1866 vc->vc_cols);
1867 } else if (info->flags & FBINFO_READS_FAST)
1868 fbcon_bmove(vc, t + count, 0, t, 0,
1869 b - t - count, vc->vc_cols);
1870 else
1871 goto redraw_up;
1872 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1873 break;
1874
1875 case SCROLL_REDRAW:
1876 redraw_up:
1877 fbcon_redraw(vc, p, t, b - t - count,
1878 count * vc->vc_cols);
1879 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1880 scr_memsetw((unsigned short *) (vc->vc_origin +
1881 vc->vc_size_row *
1882 (b - count)),
93f78da4 1883 vc->vc_video_erase_char,
1da177e4 1884 vc->vc_size_row * count);
93f78da4 1885 return 1;
1da177e4
LT		 1886 }
1887 break;
1888
1889 case SM_DOWN:
1890 if (count > vc->vc_rows) /* Maximum realistic size */
1891 count = vc->vc_rows;
e703ecc3
JB		 1892 if (logo_shown >= 0)
1893 goto redraw_down;
1da177e4
LT		 1894 switch (p->scrollmode) {
1895 case SCROLL_MOVE:
bad07ff7
KH		 1896 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1897 -count);
1898 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1899 scr_memsetw((unsigned short *) (vc->vc_origin +
1900 vc->vc_size_row *
1901 t),
93f78da4 1902 vc->vc_video_erase_char,
bad07ff7 1903 vc->vc_size_row * count);
93f78da4 1904 return 1;
1da177e4
LT		 1905 break;
1906
1907 case SCROLL_WRAP_MOVE:
1908 if (b - t - count > 3 * vc->vc_rows >> 2) {
1909 if (vc->vc_rows - b > 0)
1910 fbcon_bmove(vc, b, 0, b - count, 0,
1911 vc->vc_rows - b,
1912 vc->vc_cols);
1913 ywrap_down(vc, count);
1914 if (t > 0)
1915 fbcon_bmove(vc, count, 0, 0, 0, t,
1916 vc->vc_cols);
1917 } else if (info->flags & FBINFO_READS_FAST)
1918 fbcon_bmove(vc, t, 0, t + count, 0,
1919 b - t - count, vc->vc_cols);
1920 else
1921 goto redraw_down;
1922 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1923 break;
1924
1925 case SCROLL_PAN_MOVE:
1926 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 if (vc->vc_rows - b > 0)
1932 fbcon_bmove(vc, b, 0, b - count, 0,
1933 vc->vc_rows - b,
1934 vc->vc_cols);
1935 ypan_down(vc, count);
1936 if (t > 0)
1937 fbcon_bmove(vc, count, 0, 0, 0, t,
1938 vc->vc_cols);
1939 } else if (info->flags & FBINFO_READS_FAST)
1940 fbcon_bmove(vc, t, 0, t + count, 0,
1941 b - t - count, vc->vc_cols);
1942 else
1943 goto redraw_down;
1944 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1945 break;
1946
1947 case SCROLL_PAN_REDRAW:
1948 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 if (vc->vc_rows - b > 0)
1954 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1955 b - count);
1956 ypan_down_redraw(vc, t, count);
1957 if (t > 0)
1958 fbcon_redraw_move(vc, p, count, t, 0);
1959 } else
1960 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1961 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1962 break;
1963
1964 case SCROLL_REDRAW:
1965 redraw_down:
1966 fbcon_redraw(vc, p, b - 1, b - t - count,
1967 -count * vc->vc_cols);
1968 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1969 scr_memsetw((unsigned short *) (vc->vc_origin +
1970 vc->vc_size_row *
1971 t),
93f78da4 1972 vc->vc_video_erase_char,
1da177e4 1973 vc->vc_size_row * count);
93f78da4 1974 return 1;
1da177e4
LT		 1975 }
1976 }
93f78da4 1977 return 0;
1da177e4
LT		 1978}
1979
1980
1981static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
1982 int height, int width)
1983{
1984 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1985 struct display *p = &fb_display[vc->vc_num];
1986
1987 if (fbcon_is_inactive(vc, info))
1988 return;
1989
1990 if (!width || !height)
1991 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 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2001 p->vrows - p->yscroll);
2002}
2003
2004static 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 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2008 struct fbcon_ops *ops = info->fbcon_par;
2009 u_int b;
2010
2011 if (sy < y_break && sy + height > y_break) {
2012 b = y_break - sy;
2013 if (dy < sy) { /* Avoid trashing self */
2014 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2015 y_break);
2016 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2017 height - b, width, y_break);
2018 } else {
2019 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2020 height - b, width, y_break);
2021 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2022 y_break);
2023 }
2024 return;
2025 }
2026
2027 if (dy < y_break && dy + height > y_break) {
2028 b = y_break - dy;
2029 if (dy < sy) { /* Avoid trashing self */
2030 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2031 y_break);
2032 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2033 height - b, width, y_break);
2034 } else {
2035 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2036 height - b, width, y_break);
2037 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2038 y_break);
2039 }
2040 return;
2041 }
2042 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2043 height, width);
2044}
2045
def1be2d 2046static void updatescrollmode(struct display *p,
e4fc2761 2047 struct fb_info *info,
1da177e4
LT		 2048 struct vc_data *vc)
2049{
e4fc2761 2050 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2051 int fh = vc->vc_font.height;
2052 int cap = info->flags;
e4fc2761
AD		 2053 u16 t = 0;
2054 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2055 info->fix.xpanstep);
2056 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2057 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2058 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2059 info->var.xres_virtual);
2060 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2061 divides(ypan, vc->vc_font.height) && vyres > yres;
2062 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2063 divides(ywrap, vc->vc_font.height) &&
244ab72d
KP		 2064 divides(vc->vc_font.height, vyres) &&
2065 divides(vc->vc_font.height, yres);
1da177e4 2066 int reading_fast = cap & FBINFO_READS_FAST;
e4fc2761
AD		 2067 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2068 !(cap & FBINFO_HWACCEL_DISABLED);
2069 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2070 !(cap & FBINFO_HWACCEL_DISABLED);
2071
2072 p->vrows = vyres/fh;
2073 if (yres > (fh * (vc->vc_rows + 1)))
2074 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2075 if ((yres % fh) && (vyres % fh < yres % fh))
1da177e4
LT		 2076 p->vrows--;
2077
2078 if (good_wrap || good_pan) {
2079 if (reading_fast || fast_copyarea)
e4fc2761
AD		 2080 p->scrollmode = good_wrap ?
2081 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1da177e4
LT		 2082 else
2083 p->scrollmode = good_wrap ? SCROLL_REDRAW :
2084 SCROLL_PAN_REDRAW;
2085 } else {
2086 if (reading_fast || (fast_copyarea && !fast_imageblit))
2087 p->scrollmode = SCROLL_MOVE;
2088 else
2089 p->scrollmode = SCROLL_REDRAW;
2090 }
2091}
2092
2093static int fbcon_resize(struct vc_data *vc, unsigned int width,
e400b6ec 2094 unsigned int height, unsigned int user)
1da177e4
LT		 2095{
2096 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2097 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2098 struct display *p = &fb_display[vc->vc_num];
2099 struct fb_var_screeninfo var = info->var;
e4fc2761
AD		 2100 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2101
2102 virt_w = FBCON_SWAP(ops->rotate, width, height);
2103 virt_h = FBCON_SWAP(ops->rotate, height, width);
2104 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2105 vc->vc_font.height);
2106 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2107 vc->vc_font.width);
2108 var.xres = virt_w * virt_fw;
2109 var.yres = virt_h * virt_fh;
1da177e4
LT		 2110 x_diff = info->var.xres - var.xres;
2111 y_diff = info->var.yres - var.yres;
e4fc2761
AD		 2112 if (x_diff < 0 || x_diff > virt_fw ||
2113 y_diff < 0 || y_diff > virt_fh) {
9791d763 2114 const struct fb_videomode *mode;
1da177e4
LT		 2115
2116 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2117 mode = fb_find_best_mode(&var, &info->modelist);
2118 if (mode == NULL)
2119 return -EINVAL;
3084a895 2120 display_to_var(&var, p);
1da177e4 2121 fb_videomode_to_var(&var, mode);
3084a895 2122
e4fc2761 2123 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
1da177e4 2124 return -EINVAL;
1da177e4
LT		 2125
2126 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
2127 if (CON_IS_VISIBLE(vc)) {
2128 var.activate = FB_ACTIVATE_NOW |
2129 FB_ACTIVATE_FORCE;
2130 fb_set_var(info, &var);
2131 }
2132 var_to_display(p, &info->var, info);
e4fc2761 2133 ops->var = info->var;
1da177e4
LT		 2134 }
2135 updatescrollmode(p, info, vc);
2136 return 0;
2137}
2138
2139static int fbcon_switch(struct vc_data *vc)
2140{
88fb2c6e 2141 struct fb_info *info, *old_info = NULL;
e4fc2761 2142 struct fbcon_ops *ops;
1da177e4
LT		 2143 struct display *p = &fb_display[vc->vc_num];
2144 struct fb_var_screeninfo var;
0fcf6ada 2145 int i, ret, prev_console, charcnt = 256;
1da177e4
LT		 2146
2147 info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2148 ops = info->fbcon_par;
1da177e4
LT		 2149
2150 if (softback_top) {
1da177e4
LT		 2151 if (softback_lines)
2152 fbcon_set_origin(vc);
2153 softback_top = softback_curr = softback_in = softback_buf;
2154 softback_lines = 0;
4d9c5b6e 2155 fbcon_update_softback(vc);
1da177e4
LT		 2156 }
2157
2158 if (logo_shown >= 0) {
2159 struct vc_data *conp2 = vc_cons[logo_shown].d;
2160
2161 if (conp2->vc_top == logo_lines
2162 && conp2->vc_bottom == conp2->vc_rows)
2163 conp2->vc_top = 0;
2164 logo_shown = FBCON_LOGO_CANSHOW;
2165 }
2166
e4fc2761 2167 prev_console = ops->currcon;
88fb2c6e
AD		 2168 if (prev_console != -1)
2169 old_info = registered_fb[con2fb_map[prev_console]];
1da177e4
LT		 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 for (i = 0; i < FB_MAX; i++) {
2179 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
e4fc2761 2180 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
1da177e4 2181
e4fc2761 2182 o->currcon = vc->vc_num;
1da177e4
LT		 2183 }
2184 }
2185 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2186 display_to_var(&var, p);
2187 var.activate = FB_ACTIVATE_NOW;
2188
2189 /*
2190 * make sure we don't unnecessarily trip the memcmp()
2191 * in fb_set_var()
2192 */
2193 info->var.activate = var.activate;
10732c35 2194 var.vmode |= info->var.vmode & ~FB_VMODE_MASK;
1da177e4 2195 fb_set_var(info, &var);
e4fc2761 2196 ops->var = info->var;
1da177e4 2197
39942fd8
KP		 2198 if (old_info != NULL && (old_info != info ||
2199 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
0fcf6ada
FTS		 2200 if (info->fbops->fb_set_par) {
2201 ret = info->fbops->fb_set_par(info);
2202
2203 if (ret)
2204 printk(KERN_ERR "fbcon_switch: detected "
2205 "unhandled fb_set_par error, "
2206 "error code %d\n", ret);
2207 }
a39bc34e 2208
5428b044 2209 if (old_info != info)
a39bc34e 2210 fbcon_del_cursor_timer(old_info);
88fb2c6e 2211 }
1da177e4 2212
212f2639
AD		 2213 if (fbcon_is_inactive(vc, info) ||
2214 ops->blank_state != FB_BLANK_UNBLANK)
2215 fbcon_del_cursor_timer(info);
2216 else
2217 fbcon_add_cursor_timer(info);
2218
b73deed3 2219 set_blitting_type(vc, info);
e4fc2761
AD		 2220 ops->cursor_reset = 1;
2221
b73deed3 2222 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 2223 ops->rotate = FB_ROTATE_UR;
b73deed3 2224 set_blitting_type(vc, info);
e4fc2761 2225 }
1da177e4 2226
b8c90945 2227 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4 2228 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
56f0d64d
AD		 2229
2230 if (p->userfont)
2231 charcnt = FNTCHARCNT(vc->vc_font.data);
2232
2233 if (charcnt > 256)
2234 vc->vc_complement_mask <<= 1;
2235
1da177e4
LT		 2236 updatescrollmode(p, info, vc);
2237
2238 switch (p->scrollmode) {
2239 case SCROLL_WRAP_MOVE:
2240 scrollback_phys_max = p->vrows - vc->vc_rows;
2241 break;
2242 case SCROLL_PAN_MOVE:
2243 case SCROLL_PAN_REDRAW:
2244 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2245 if (scrollback_phys_max < 0)
2246 scrollback_phys_max = 0;
2247 break;
2248 default:
2249 scrollback_phys_max = 0;
2250 break;
2251 }
e4fc2761 2252
1da177e4
LT		 2253 scrollback_max = 0;
2254 scrollback_current = 0;
4e1567d3
AD		 2255
2256 if (!fbcon_is_inactive(vc, info)) {
2257 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2258 ops->update_start(info);
2259 }
2260
1da177e4
LT		 2261 fbcon_set_palette(vc, color_table);
2262 fbcon_clear_margins(vc, 0);
2263
2264 if (logo_shown == FBCON_LOGO_DRAW) {
2265
2266 logo_shown = fg_console;
2267 /* This is protected above by initmem_freed */
9c44e5f6 2268 fb_show_logo(info, ops->rotate);
1da177e4
LT		 2269 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 return 0;
2274 }
2275 return 1;
2276}
2277
2278static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2279 int blank)
2280{
994efacd
RP		 2281 struct fb_event event;
2282
1da177e4
LT		 2283 if (blank) {
2284 unsigned short charmask = vc->vc_hi_font_mask ?
2285 0x1ff : 0xff;
2286 unsigned short oldc;
2287
2288 oldc = vc->vc_video_erase_char;
2289 vc->vc_video_erase_char &= charmask;
2290 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2291 vc->vc_video_erase_char = oldc;
2292 }
994efacd
RP		 2293
2294
513adb58
AR		 2295 if (!lock_fb_info(info))
2296 return;
994efacd
RP		 2297 event.info = info;
2298 event.data = &blank;
2299 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
513adb58 2300 unlock_fb_info(info);
1da177e4
LT		 2301}
2302
2303static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2304{
2305 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2306 struct fbcon_ops *ops = info->fbcon_par;
2307
2308 if (mode_switch) {
2309 struct fb_var_screeninfo var = info->var;
2310
2311 ops->graphics = 1;
2312
2313 if (!blank) {
2314 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2315 fb_set_var(info, &var);
2316 ops->graphics = 0;
e4fc2761 2317 ops->var = info->var;
f5c15d0b 2318 }
1da177e4
LT		 2319 }
2320
2321 if (!fbcon_is_inactive(vc, info)) {
2322 if (ops->blank_state != blank) {
2323 ops->blank_state = blank;
2324 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2325 ops->cursor_flash = (!blank);
2326
bca404af
DES		 2327 if (!(info->flags & FBINFO_MISC_USEREVENT))
2328 if (fb_blank(info, blank))
2329 fbcon_generic_blank(vc, info, blank);
1da177e4
LT		 2330 }
2331
88fb2c6e
AD		 2332 if (!blank)
2333 update_screen(vc);
2334 }
2335
4d8a2d98 2336 if (mode_switch || fbcon_is_inactive(vc, info) ||
212f2639 2337 ops->blank_state != FB_BLANK_UNBLANK)
88fb2c6e 2338 fbcon_del_cursor_timer(info);
212f2639
AD		 2339 else
2340 fbcon_add_cursor_timer(info);
1da177e4 2341
88fb2c6e 2342 return 0;
1da177e4
LT		 2343}
2344
d219adc1
JB		 2345static int fbcon_debug_enter(struct vc_data *vc)
2346{
2347 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2348 struct fbcon_ops *ops = info->fbcon_par;
2349
2350 ops->save_graphics = ops->graphics;
2351 ops->graphics = 0;
2352 if (info->fbops->fb_debug_enter)
2353 info->fbops->fb_debug_enter(info);
2354 fbcon_set_palette(vc, color_table);
2355 return 0;
2356}
2357
2358static int fbcon_debug_leave(struct vc_data *vc)
2359{
2360 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2361 struct fbcon_ops *ops = info->fbcon_par;
2362
2363 ops->graphics = ops->save_graphics;
2364 if (info->fbops->fb_debug_leave)
2365 info->fbops->fb_debug_leave(info);
2366 return 0;
2367}
2368
1da177e4
LT		 2369static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2370{
2371 u8 *fontdata = vc->vc_font.data;
2372 u8 *data = font->data;
2373 int i, j;
2374
2375 font->width = vc->vc_font.width;
2376 font->height = vc->vc_font.height;
2377 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2378 if (!font->data)
2379 return 0;
2380
2381 if (font->width <= 8) {
2382 j = vc->vc_font.height;
2383 for (i = 0; i < font->charcount; i++) {
2384 memcpy(data, fontdata, j);
2385 memset(data + j, 0, 32 - j);
2386 data += 32;
2387 fontdata += j;
2388 }
2389 } else if (font->width <= 16) {
2390 j = vc->vc_font.height * 2;
2391 for (i = 0; i < font->charcount; i++) {
2392 memcpy(data, fontdata, j);
2393 memset(data + j, 0, 64 - j);
2394 data += 64;
2395 fontdata += j;
2396 }
2397 } else if (font->width <= 24) {
2398 for (i = 0; i < font->charcount; i++) {
2399 for (j = 0; j < vc->vc_font.height; j++) {
2400 *data++ = fontdata[0];
2401 *data++ = fontdata[1];
2402 *data++ = fontdata[2];
2403 fontdata += sizeof(u32);
2404 }
2405 memset(data, 0, 3 * (32 - j));
2406 data += 3 * (32 - j);
2407 }
2408 } else {
2409 j = vc->vc_font.height * 4;
2410 for (i = 0; i < font->charcount; i++) {
2411 memcpy(data, fontdata, j);
2412 memset(data + j, 0, 128 - j);
2413 data += 128;
2414 fontdata += j;
2415 }
2416 }
2417 return 0;
2418}
2419
2420static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2f4516db 2421 const u8 * data, int userfont)
1da177e4
LT		 2422{
2423 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2424 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2425 struct display *p = &fb_display[vc->vc_num];
2426 int resize;
2427 int cnt;
2428 char *old_data = NULL;
2429
2430 if (CON_IS_VISIBLE(vc) && softback_lines)
2431 fbcon_set_origin(vc);
2432
2433 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2434 if (p->userfont)
2435 old_data = vc->vc_font.data;
2436 if (userfont)
2437 cnt = FNTCHARCNT(data);
2438 else
2439 cnt = 256;
2f4516db 2440 vc->vc_font.data = (void *)(p->fontdata = data);
1da177e4
LT		 2441 if ((p->userfont = userfont))
2442 REFCOUNT(data)++;
2443 vc->vc_font.width = w;
2444 vc->vc_font.height = h;
2445 if (vc->vc_hi_font_mask && cnt == 256) {
2446 vc->vc_hi_font_mask = 0;
2447 if (vc->vc_can_do_color) {
2448 vc->vc_complement_mask >>= 1;
2449 vc->vc_s_complement_mask >>= 1;
2450 }
2451
2452 /* ++Edmund: reorder the attribute bits */
2453 if (vc->vc_can_do_color) {
2454 unsigned short *cp =
2455 (unsigned short *) vc->vc_origin;
2456 int count = vc->vc_screenbuf_size / 2;
2457 unsigned short c;
2458 for (; count > 0; count--, cp++) {
2459 c = scr_readw(cp);
2460 scr_writew(((c & 0xfe00) >> 1) |
2461 (c & 0xff), cp);
2462 }
2463 c = vc->vc_video_erase_char;
2464 vc->vc_video_erase_char =
2465 ((c & 0xfe00) >> 1) | (c & 0xff);
2466 vc->vc_attr >>= 1;
2467 }
2468 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2469 vc->vc_hi_font_mask = 0x100;
2470 if (vc->vc_can_do_color) {
2471 vc->vc_complement_mask <<= 1;
2472 vc->vc_s_complement_mask <<= 1;
2473 }
2474
2475 /* ++Edmund: reorder the attribute bits */
2476 {
2477 unsigned short *cp =
2478 (unsigned short *) vc->vc_origin;
2479 int count = vc->vc_screenbuf_size / 2;
2480 unsigned short c;
2481 for (; count > 0; count--, cp++) {
2482 unsigned short newc;
2483 c = scr_readw(cp);
2484 if (vc->vc_can_do_color)
2485 newc =
2486 ((c & 0xff00) << 1) | (c &
2487 0xff);
2488 else
2489 newc = c & ~0x100;
2490 scr_writew(newc, cp);
2491 }
2492 c = vc->vc_video_erase_char;
2493 if (vc->vc_can_do_color) {
2494 vc->vc_video_erase_char =
2495 ((c & 0xff00) << 1) | (c & 0xff);
2496 vc->vc_attr <<= 1;
93f78da4 2497 } else
1da177e4
LT		 2498 vc->vc_video_erase_char = c & ~0x100;
2499 }
2500
2501 }
2502
2503 if (resize) {
e4fc2761
AD		 2504 int cols, rows;
2505
2506 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2507 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2508 cols /= w;
2509 rows /= h;
2510 vc_resize(vc, cols, rows);
4d9c5b6e
AD		 2511 if (CON_IS_VISIBLE(vc) && softback_buf)
2512 fbcon_update_softback(vc);
1da177e4
LT		 2513 } else if (CON_IS_VISIBLE(vc)
2514 && vc->vc_mode == KD_TEXT) {
2515 fbcon_clear_margins(vc, 0);
2516 update_screen(vc);
2517 }
2518
2519 if (old_data && (--REFCOUNT(old_data) == 0))
2520 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2521 return 0;
2522}
2523
2524static int fbcon_copy_font(struct vc_data *vc, int con)
2525{
2526 struct display *od = &fb_display[con];
2527 struct console_font *f = &vc->vc_font;
2528
2529 if (od->fontdata == f->data)
2530 return 0; /* already the same font... */
2531 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2532}
2533
2534/*
2535 * User asked to set font; we are guaranteed that
2536 * a) width and height are in range 1..32
2537 * b) charcount does not exceed 512
2538 * but lets not assume that, since someone might someday want to use larger
2539 * fonts. And charcount of 512 is small for unicode support.
2540 *
2541 * However, user space gives the font in 32 rows , regardless of
2542 * actual font height. So a new API is needed if support for larger fonts
2543 * is ever implemented.
2544 */
2545
2546static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2547{
2d2699d9 2548 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1da177e4
LT		 2549 unsigned charcount = font->charcount;
2550 int w = font->width;
2551 int h = font->height;
2552 int size;
2553 int i, csum;
2554 u8 *new_data, *data = font->data;
2555 int pitch = (font->width+7) >> 3;
2556
2557 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2558 * If not this check should be changed to charcount < 256 */
2559 if (charcount != 256 && charcount != 512)
2560 return -EINVAL;
2561
2d2699d9
AD		 2562 /* Make sure drawing engine can handle the font */
2563 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2564 !(info->pixmap.blit_y & (1 << (font->height - 1))))
2565 return -EINVAL;
38b4982c
AD		 2566
2567 /* Make sure driver can handle the font length */
2568 if (fbcon_invalid_charcount(info, charcount))
2569 return -EINVAL;
2d2699d9 2570
1da177e4
LT		 2571 size = h * pitch * charcount;
2572
2573 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2574
2575 if (!new_data)
2576 return -ENOMEM;
2577
2578 new_data += FONT_EXTRA_WORDS * sizeof(int);
2579 FNTSIZE(new_data) = size;
2580 FNTCHARCNT(new_data) = charcount;
2581 REFCOUNT(new_data) = 0; /* usage counter */
2582 for (i=0; i< charcount; i++) {
2583 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2584 }
2585
2586 /* Since linux has a nice crc32 function use it for counting font
2587 * checksums. */
2588 csum = crc32(0, new_data, size);
2589
2590 FNTSUM(new_data) = csum;
2591 /* Check if the same font is on some other console already */
e614b18d 2592 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 2593 struct vc_data *tmp = vc_cons[i].d;
2594
2595 if (fb_display[i].userfont &&
2596 fb_display[i].fontdata &&
2597 FNTSUM(fb_display[i].fontdata) == csum &&
2598 FNTSIZE(fb_display[i].fontdata) == size &&
2599 tmp->vc_font.width == w &&
2600 !memcmp(fb_display[i].fontdata, new_data, size)) {
2601 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2f4516db 2602 new_data = (u8 *)fb_display[i].fontdata;
1da177e4
LT		 2603 break;
2604 }
2605 }
2606 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2607}
2608
2609static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2610{
2611 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2f4516db 2612 const struct font_desc *f;
1da177e4
LT		 2613
2614 if (!name)
2d2699d9
AD		 2615 f = get_default_font(info->var.xres, info->var.yres,
2616 info->pixmap.blit_x, info->pixmap.blit_y);
1da177e4
LT		 2617 else if (!(f = find_font(name)))
2618 return -ENOENT;
2619
2620 font->width = f->width;
2621 font->height = f->height;
2622 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2623}
2624
2625static u16 palette_red[16];
2626static u16 palette_green[16];
2627static u16 palette_blue[16];
2628
2629static struct fb_cmap palette_cmap = {
2630 0, 16, palette_red, palette_green, palette_blue, NULL
2631};
2632
2633static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2634{
2635 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2636 int i, j, k, depth;
2637 u8 val;
2638
2639 if (fbcon_is_inactive(vc, info))
2640 return -EINVAL;
2641
2642 if (!CON_IS_VISIBLE(vc))
2643 return 0;
2644
b8c90945 2645 depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 2646 if (depth > 3) {
2647 for (i = j = 0; i < 16; i++) {
2648 k = table[i];
2649 val = vc->vc_palette[j++];
2650 palette_red[k] = (val << 8) | val;
2651 val = vc->vc_palette[j++];
2652 palette_green[k] = (val << 8) | val;
2653 val = vc->vc_palette[j++];
2654 palette_blue[k] = (val << 8) | val;
2655 }
2656 palette_cmap.len = 16;
2657 palette_cmap.start = 0;
2658 /*
2659 * If framebuffer is capable of less than 16 colors,
2660 * use default palette of fbcon.
2661 */
2662 } else
2663 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2664
2665 return fb_set_cmap(&palette_cmap, info);
2666}
2667
2668static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2669{
2670 unsigned long p;
2671 int line;
2672
2673 if (vc->vc_num != fg_console || !softback_lines)
2674 return (u16 *) (vc->vc_origin + offset);
2675 line = offset / vc->vc_size_row;
2676 if (line >= softback_lines)
2677 return (u16 *) (vc->vc_origin + offset -
2678 softback_lines * vc->vc_size_row);
2679 p = softback_curr + offset;
2680 if (p >= softback_end)
2681 p += softback_buf - softback_end;
2682 return (u16 *) p;
2683}
2684
2685static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2686 int *px, int *py)
2687{
2688 unsigned long ret;
2689 int x, y;
2690
2691 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2692 unsigned long offset = (pos - vc->vc_origin) / 2;
2693
2694 x = offset % vc->vc_cols;
2695 y = offset / vc->vc_cols;
2696 if (vc->vc_num == fg_console)
2697 y += softback_lines;
2698 ret = pos + (vc->vc_cols - x) * 2;
2699 } else if (vc->vc_num == fg_console && softback_lines) {
2700 unsigned long offset = pos - softback_curr;
2701
2702 if (pos < softback_curr)
2703 offset += softback_end - softback_buf;
2704 offset /= 2;
2705 x = offset % vc->vc_cols;
2706 y = offset / vc->vc_cols;
2707 ret = pos + (vc->vc_cols - x) * 2;
2708 if (ret == softback_end)
2709 ret = softback_buf;
2710 if (ret == softback_in)
2711 ret = vc->vc_origin;
2712 } else {
2713 /* Should not happen */
2714 x = y = 0;
2715 ret = vc->vc_origin;
2716 }
2717 if (px)
2718 *px = x;
2719 if (py)
2720 *py = y;
2721 return ret;
2722}
2723
2724/* As we might be inside of softback, we may work with non-contiguous buffer,
2725 that's why we have to use a separate routine. */
2726static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2727{
2728 while (cnt--) {
2729 u16 a = scr_readw(p);
2730 if (!vc->vc_can_do_color)
2731 a ^= 0x0800;
2732 else if (vc->vc_hi_font_mask == 0x100)
2733 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2734 (((a) & 0x0e00) << 4);
2735 else
2736 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2737 (((a) & 0x0700) << 4);
2738 scr_writew(a, p++);
2739 if (p == (u16 *) softback_end)
2740 p = (u16 *) softback_buf;
2741 if (p == (u16 *) softback_in)
2742 p = (u16 *) vc->vc_origin;
2743 }
2744}
2745
2746static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2747{
2748 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
e4fc2761 2749 struct fbcon_ops *ops = info->fbcon_par;
2c6cc35c 2750 struct display *disp = &fb_display[fg_console];
1da177e4
LT		 2751 int offset, limit, scrollback_old;
2752
2753 if (softback_top) {
2754 if (vc->vc_num != fg_console)
2755 return 0;
2756 if (vc->vc_mode != KD_TEXT || !lines)
2757 return 0;
2758 if (logo_shown >= 0) {
2759 struct vc_data *conp2 = vc_cons[logo_shown].d;
2760
2761 if (conp2->vc_top == logo_lines
2762 && conp2->vc_bottom == conp2->vc_rows)
2763 conp2->vc_top = 0;
2764 if (logo_shown == vc->vc_num) {
2765 unsigned long p, q;
2766 int i;
2767
2768 p = softback_in;
2769 q = vc->vc_origin +
2770 logo_lines * vc->vc_size_row;
2771 for (i = 0; i < logo_lines; i++) {
2772 if (p == softback_top)
2773 break;
2774 if (p == softback_buf)
2775 p = softback_end;
2776 p -= vc->vc_size_row;
2777 q -= vc->vc_size_row;
2778 scr_memcpyw((u16 *) q, (u16 *) p,
2779 vc->vc_size_row);
2780 }
308af929 2781 softback_in = softback_curr = p;
1da177e4
LT		 2782 update_region(vc, vc->vc_origin,
2783 logo_lines * vc->vc_cols);
2784 }
2785 logo_shown = FBCON_LOGO_CANSHOW;
2786 }
2787 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2c6cc35c 2788 fbcon_redraw_softback(vc, disp, lines);
1da177e4
LT		 2789 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2790 return 0;
2791 }
2792
2793 if (!scrollback_phys_max)
2794 return -ENOSYS;
2795
2796 scrollback_old = scrollback_current;
2797 scrollback_current -= lines;
2798 if (scrollback_current < 0)
2799 scrollback_current = 0;
2800 else if (scrollback_current > scrollback_max)
2801 scrollback_current = scrollback_max;
2802 if (scrollback_current == scrollback_old)
2803 return 0;
2804
2805 if (fbcon_is_inactive(vc, info))
2806 return 0;
2807
2808 fbcon_cursor(vc, CM_ERASE);
2809
2c6cc35c
MS		 2810 offset = disp->yscroll - scrollback_current;
2811 limit = disp->vrows;
2812 switch (disp->scrollmode) {
1da177e4
LT		 2813 case SCROLL_WRAP_MOVE:
2814 info->var.vmode |= FB_VMODE_YWRAP;
2815 break;
2816 case SCROLL_PAN_MOVE:
2817 case SCROLL_PAN_REDRAW:
2818 limit -= vc->vc_rows;
2819 info->var.vmode &= ~FB_VMODE_YWRAP;
2820 break;
2821 }
2822 if (offset < 0)
2823 offset += limit;
2824 else if (offset >= limit)
2825 offset -= limit;
e4fc2761
AD		 2826
2827 ops->var.xoffset = 0;
2828 ops->var.yoffset = offset * vc->vc_font.height;
2829 ops->update_start(info);
2830
1da177e4
LT		 2831 if (!scrollback_current)
2832 fbcon_cursor(vc, CM_DRAW);
2833 return 0;
2834}
2835
2836static int fbcon_set_origin(struct vc_data *vc)
2837{
2838 if (softback_lines)
2839 fbcon_scrolldelta(vc, softback_lines);
2840 return 0;
2841}
2842
2843static void fbcon_suspended(struct fb_info *info)
2844{
2845 struct vc_data *vc = NULL;
2846 struct fbcon_ops *ops = info->fbcon_par;
2847
2848 if (!ops || ops->currcon < 0)
2849 return;
2850 vc = vc_cons[ops->currcon].d;
2851
2852 /* Clear cursor, restore saved data */
2853 fbcon_cursor(vc, CM_ERASE);
2854}
2855
2856static void fbcon_resumed(struct fb_info *info)
2857{
2858 struct vc_data *vc;
2859 struct fbcon_ops *ops = info->fbcon_par;
2860
2861 if (!ops || ops->currcon < 0)
2862 return;
2863 vc = vc_cons[ops->currcon].d;
2864
2865 update_screen(vc);
2866}
2867
2868static void fbcon_modechanged(struct fb_info *info)
2869{
2870 struct fbcon_ops *ops = info->fbcon_par;
2871 struct vc_data *vc;
2872 struct display *p;
2873 int rows, cols;
2874
2875 if (!ops || ops->currcon < 0)
2876 return;
2877 vc = vc_cons[ops->currcon].d;
e4fc2761
AD		 2878 if (vc->vc_mode != KD_TEXT ||
2879 registered_fb[con2fb_map[ops->currcon]] != info)
1da177e4
LT		 2880 return;
2881
2882 p = &fb_display[vc->vc_num];
b73deed3 2883 set_blitting_type(vc, info);
1da177e4
LT		 2884
2885 if (CON_IS_VISIBLE(vc)) {
2886 var_to_display(p, &info->var, info);
e4fc2761
AD		 2887 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2888 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2889 cols /= vc->vc_font.width;
2890 rows /= vc->vc_font.height;
1da177e4
LT		 2891 vc_resize(vc, cols, rows);
2892 updatescrollmode(p, info, vc);
2893 scrollback_max = 0;
2894 scrollback_current = 0;
4e1567d3
AD		 2895
2896 if (!fbcon_is_inactive(vc, info)) {
2897 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2898 ops->update_start(info);
2899 }
2900
1da177e4
LT		 2901 fbcon_set_palette(vc, color_table);
2902 update_screen(vc);
4d9c5b6e
AD		 2903 if (softback_buf)
2904 fbcon_update_softback(vc);
1da177e4
LT		 2905 }
2906}
2907
7726e9e1
AD		 2908static void fbcon_set_all_vcs(struct fb_info *info)
2909{
2910 struct fbcon_ops *ops = info->fbcon_par;
2911 struct vc_data *vc;
2912 struct display *p;
95d67bb1 2913 int i, rows, cols, fg = -1;
7726e9e1
AD		 2914
2915 if (!ops || ops->currcon < 0)
2916 return;
2917
e614b18d 2918 for (i = first_fb_vc; i <= last_fb_vc; i++) {
7726e9e1
AD		 2919 vc = vc_cons[i].d;
2920 if (!vc || vc->vc_mode != KD_TEXT ||
2921 registered_fb[con2fb_map[i]] != info)
2922 continue;
2923
95d67bb1
AD		 2924 if (CON_IS_VISIBLE(vc)) {
2925 fg = i;
2926 continue;
2927 }
2928
7726e9e1 2929 p = &fb_display[vc->vc_num];
b73deed3 2930 set_blitting_type(vc, info);
7726e9e1 2931 var_to_display(p, &info->var, info);
232fb69a
ON		 2932 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2933 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
e4fc2761
AD		 2934 cols /= vc->vc_font.width;
2935 rows /= vc->vc_font.height;
7726e9e1 2936 vc_resize(vc, cols, rows);
7726e9e1 2937 }
04a2fe57 2938
95d67bb1
AD		 2939 if (fg != -1)
2940 fbcon_modechanged(info);
7726e9e1
AD		 2941}
2942
1da177e4
LT		 2943static int fbcon_mode_deleted(struct fb_info *info,
2944 struct fb_videomode *mode)
2945{
2946 struct fb_info *fb_info;
2947 struct display *p;
2948 int i, j, found = 0;
2949
2950 /* before deletion, ensure that mode is not in use */
2951 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2952 j = con2fb_map[i];
2953 if (j == -1)
2954 continue;
2955 fb_info = registered_fb[j];
2956 if (fb_info != info)
2957 continue;
2958 p = &fb_display[i];
2959 if (!p || !p->mode)
2960 continue;
2961 if (fb_mode_is_equal(p->mode, mode)) {
2962 found = 1;
2963 break;
2964 }
2965 }
2966 return found;
2967}
2968
cfafca80
JB		 2969#ifdef CONFIG_VT_HW_CONSOLE_BINDING
2970static int fbcon_unbind(void)
2971{
2972 int ret;
2973
2974 ret = unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc,
2975 fbcon_is_default);
2ddce3fd
IA		 2976
2977 if (!ret)
2978 fbcon_has_console_bind = 0;
2979
cfafca80
JB		 2980 return ret;
2981}
2982#else
2983static inline int fbcon_unbind(void)
2984{
2985 return -EINVAL;
2986}
2987#endif /* CONFIG_VT_HW_CONSOLE_BINDING */
2988
2989static int fbcon_fb_unbind(int idx)
2990{
2991 int i, new_idx = -1, ret = 0;
2992
2ddce3fd
IA		 2993 if (!fbcon_has_console_bind)
2994 return 0;
2995
cfafca80
JB		 2996 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2997 if (con2fb_map[i] != idx &&
2998 con2fb_map[i] != -1) {
2999 new_idx = i;
3000 break;
3001 }
3002 }
3003
3004 if (new_idx != -1) {
3005 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3006 if (con2fb_map[i] == idx)
3007 set_con2fb_map(i, new_idx, 0);
3008 }
3009 } else
3010 ret = fbcon_unbind();
3011
3012 return ret;
3013}
3014
623e71b0 3015static int fbcon_fb_unregistered(struct fb_info *info)
e614b18d 3016{
66c1ca01 3017 int i, idx;
e614b18d 3018
66c1ca01 3019 idx = info->node;
e614b18d
AD		 3020 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3021 if (con2fb_map[i] == idx)
3022 con2fb_map[i] = -1;
3023 }
3024
3025 if (idx == info_idx) {
3026 info_idx = -1;
3027
3028 for (i = 0; i < FB_MAX; i++) {
3029 if (registered_fb[i] != NULL) {
3030 info_idx = i;
3031 break;
3032 }
3033 }
3034 }
3035
3036 if (info_idx != -1) {
3037 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3038 if (con2fb_map[i] == -1)
3039 con2fb_map[i] = info_idx;
3040 }
3041 }
3042
623e71b0
AD		 3043 if (primary_device == idx)
3044 primary_device = -1;
3045
66c1ca01
AR		 3046 if (!num_registered_fb)
3047 unregister_con_driver(&fb_con);
3048
623e71b0
AD		 3049 return 0;
3050}
3051
6a9ee8af
DA		 3052static void fbcon_remap_all(int idx)
3053{
3054 int i;
3055 for (i = first_fb_vc; i <= last_fb_vc; i++)
3056 set_con2fb_map(i, idx, 0);
3057
3058 if (con_is_bound(&fb_con)) {
3059 printk(KERN_INFO "fbcon: Remapping primary device, "
3060 "fb%i, to tty %i-%i\n", idx,
3061 first_fb_vc + 1, last_fb_vc + 1);
3062 info_idx = idx;
3063 }
3064}
3065
623e71b0 3066#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
afd1db16 3067static void fbcon_select_primary(struct fb_info *info)
623e71b0 3068{
623e71b0
AD		 3069 if (!map_override && primary_device == -1 &&
3070 fb_is_primary_device(info)) {
afd1db16 3071 int i;
623e71b0 3072
afd1db16
AD		 3073 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
3074 info->fix.id, info->node);
623e71b0
AD		 3075 primary_device = info->node;
3076
afd1db16 3077 for (i = first_fb_vc; i <= last_fb_vc; i++)
623e71b0 3078 con2fb_map_boot[i] = primary_device;
623e71b0 3079
afd1db16
AD		 3080 if (con_is_bound(&fb_con)) {
3081 printk(KERN_INFO "fbcon: Remapping primary device, "
3082 "fb%i, to tty %i-%i\n", info->node,
3083 first_fb_vc + 1, last_fb_vc + 1);
3084 info_idx = primary_device;
623e71b0 3085 }
623e71b0
AD		 3086 }
3087
623e71b0
AD		 3088}
3089#else
afd1db16 3090static inline void fbcon_select_primary(struct fb_info *info)
623e71b0 3091{
afd1db16 3092 return;
e614b18d 3093}
623e71b0 3094#endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */
e614b18d 3095
623e71b0 3096static int fbcon_fb_registered(struct fb_info *info)
1da177e4 3097{
66c1ca01 3098 int ret = 0, i, idx;
623e71b0 3099
66c1ca01 3100 idx = info->node;
afd1db16 3101 fbcon_select_primary(info);
1da177e4
LT		 3102
3103 if (info_idx == -1) {
e614b18d 3104 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3105 if (con2fb_map_boot[i] == idx) {
3106 info_idx = idx;
3107 break;
3108 }
3109 }
e614b18d 3110
1da177e4
LT		 3111 if (info_idx != -1)
3112 ret = fbcon_takeover(1);
3113 } else {
e614b18d 3114 for (i = first_fb_vc; i <= last_fb_vc; i++) {
d1baa4ff 3115 if (con2fb_map_boot[i] == idx)
1da177e4
LT		 3116 set_con2fb_map(i, idx, 0);
3117 }
3118 }
3119
3120 return ret;
3121}
3122
3123static void fbcon_fb_blanked(struct fb_info *info, int blank)
3124{
3125 struct fbcon_ops *ops = info->fbcon_par;
3126 struct vc_data *vc;
3127
3128 if (!ops || ops->currcon < 0)
3129 return;
3130
3131 vc = vc_cons[ops->currcon].d;
3132 if (vc->vc_mode != KD_TEXT ||
3133 registered_fb[con2fb_map[ops->currcon]] != info)
3134 return;
3135
3136 if (CON_IS_VISIBLE(vc)) {
3137 if (blank)
3138 do_blank_screen(0);
3139 else
3140 do_unblank_screen(0);
3141 }
3142 ops->blank_state = blank;
3143}
3144
3145static void fbcon_new_modelist(struct fb_info *info)
3146{
3147 int i;
3148 struct vc_data *vc;
3149 struct fb_var_screeninfo var;
9791d763 3150 const struct fb_videomode *mode;
1da177e4 3151
e614b18d 3152 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3153 if (registered_fb[con2fb_map[i]] != info)
3154 continue;
3155 if (!fb_display[i].mode)
3156 continue;
3157 vc = vc_cons[i].d;
3158 display_to_var(&var, &fb_display[i]);
8fb6567e
MJ		 3159 mode = fb_find_nearest_mode(fb_display[i].mode,
3160 &info->modelist);
1da177e4 3161 fb_videomode_to_var(&var, mode);
d1baa4ff 3162 fbcon_set_disp(info, &var, vc->vc_num);
1da177e4
LT		 3163 }
3164}
3165
38a3dc51
AD		 3166static void fbcon_get_requirement(struct fb_info *info,
3167 struct fb_blit_caps *caps)
3168{
3169 struct vc_data *vc;
3170 struct display *p;
38a3dc51
AD		 3171
3172 if (caps->flags) {
167f07f1 3173 int i, charcnt;
38a3dc51
AD		 3174
3175 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3176 vc = vc_cons[i].d;
167f07f1
AD		 3177 if (vc && vc->vc_mode == KD_TEXT &&
3178 info->node == con2fb_map[i]) {
38a3dc51
AD		 3179 p = &fb_display[i];
3180 caps->x |= 1 << (vc->vc_font.width - 1);
3181 caps->y |= 1 << (vc->vc_font.height - 1);
3182 charcnt = (p->userfont) ?
3183 FNTCHARCNT(p->fontdata) : 256;
3184 if (caps->len < charcnt)
3185 caps->len = charcnt;
3186 }
3187 }
3188 } else {
3189 vc = vc_cons[fg_console].d;
3190
167f07f1
AD		 3191 if (vc && vc->vc_mode == KD_TEXT &&
3192 info->node == con2fb_map[fg_console]) {
38a3dc51 3193 p = &fb_display[fg_console];
167f07f1
AD		 3194 caps->x = 1 << (vc->vc_font.width - 1);
3195 caps->y = 1 << (vc->vc_font.height - 1);
3196 caps->len = (p->userfont) ?
38a3dc51 3197 FNTCHARCNT(p->fontdata) : 256;
38a3dc51
AD		 3198 }
3199 }
3200}
3201
66c1ca01 3202static int fbcon_event_notify(struct notifier_block *self,
1da177e4
LT		 3203 unsigned long action, void *data)
3204{
3205 struct fb_event *event = data;
3206 struct fb_info *info = event->info;
3207 struct fb_videomode *mode;
3208 struct fb_con2fbmap *con2fb;
38a3dc51 3209 struct fb_blit_caps *caps;
66c1ca01 3210 int idx, ret = 0;
1da177e4 3211
e614b18d
AD		 3212 /*
3213 * ignore all events except driver registration and deregistration
3214 * if fbcon is not active
3215 */
3216 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
3217 action == FB_EVENT_FB_UNREGISTERED))
3218 goto done;
3219
1da177e4
LT		 3220 switch(action) {
3221 case FB_EVENT_SUSPEND:
3222 fbcon_suspended(info);
3223 break;
3224 case FB_EVENT_RESUME:
3225 fbcon_resumed(info);
3226 break;
3227 case FB_EVENT_MODE_CHANGE:
3228 fbcon_modechanged(info);
3229 break;
7726e9e1
AD		 3230 case FB_EVENT_MODE_CHANGE_ALL:
3231 fbcon_set_all_vcs(info);
3232 break;
1da177e4
LT		 3233 case FB_EVENT_MODE_DELETE:
3234 mode = event->data;
3235 ret = fbcon_mode_deleted(info, mode);
3236 break;
cfafca80 3237 case FB_EVENT_FB_UNBIND:
66c1ca01 3238 idx = info->node;
66c1ca01 3239 ret = fbcon_fb_unbind(idx);
cfafca80 3240 break;
1da177e4 3241 case FB_EVENT_FB_REGISTERED:
623e71b0 3242 ret = fbcon_fb_registered(info);
1da177e4 3243 break;
e614b18d 3244 case FB_EVENT_FB_UNREGISTERED:
623e71b0 3245 ret = fbcon_fb_unregistered(info);
e614b18d 3246 break;
1da177e4
LT		 3247 case FB_EVENT_SET_CONSOLE_MAP:
3248 con2fb = event->data;
3249 ret = set_con2fb_map(con2fb->console - 1,
3250 con2fb->framebuffer, 1);
3251 break;
3252 case FB_EVENT_GET_CONSOLE_MAP:
3253 con2fb = event->data;
3254 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
3255 break;
3256 case FB_EVENT_BLANK:
3257 fbcon_fb_blanked(info, *(int *)event->data);
3258 break;
3259 case FB_EVENT_NEW_MODELIST:
3260 fbcon_new_modelist(info);
3261 break;
38a3dc51
AD		 3262 case FB_EVENT_GET_REQ:
3263 caps = event->data;
3264 fbcon_get_requirement(info, caps);
3265 break;
6a9ee8af
DA		 3266 case FB_EVENT_REMAP_ALL_CONSOLE:
3267 idx = info->node;
3268 fbcon_remap_all(idx);
3269 break;
1da177e4 3270 }
e614b18d 3271done:
1da177e4
LT		 3272 return ret;
3273}
3274
3275/*
3276 * The console `switch' structure for the frame buffer based console
3277 */
3278
3279static const struct consw fb_con = {
3280 .owner = THIS_MODULE,
3281 .con_startup = fbcon_startup,
3282 .con_init = fbcon_init,
3283 .con_deinit = fbcon_deinit,
3284 .con_clear = fbcon_clear,
3285 .con_putc = fbcon_putc,
3286 .con_putcs = fbcon_putcs,
3287 .con_cursor = fbcon_cursor,
3288 .con_scroll = fbcon_scroll,
3289 .con_bmove = fbcon_bmove,
3290 .con_switch = fbcon_switch,
3291 .con_blank = fbcon_blank,
3292 .con_font_set = fbcon_set_font,
3293 .con_font_get = fbcon_get_font,
3294 .con_font_default = fbcon_set_def_font,
3295 .con_font_copy = fbcon_copy_font,
3296 .con_set_palette = fbcon_set_palette,
3297 .con_scrolldelta = fbcon_scrolldelta,
3298 .con_set_origin = fbcon_set_origin,
3299 .con_invert_region = fbcon_invert_region,
3300 .con_screen_pos = fbcon_screen_pos,
3301 .con_getxy = fbcon_getxy,
3302 .con_resize = fbcon_resize,
d219adc1
JB		 3303 .con_debug_enter = fbcon_debug_enter,
3304 .con_debug_leave = fbcon_debug_leave,
1da177e4
LT		 3305};
3306
3307static struct notifier_block fbcon_event_notifier = {
3308 .notifier_call = fbcon_event_notify,
3309};
3310
0c6c1ce0
AD		 3311static ssize_t store_rotate(struct device *device,
3312 struct device_attribute *attr, const char *buf,
3313 size_t count)
9a179176
AD		 3314{
3315 struct fb_info *info;
3316 int rotate, idx;
3317 char **last = NULL;
3318
e614b18d
AD		 3319 if (fbcon_has_exited)
3320 return count;
3321
9a179176
AD		 3322 acquire_console_sem();
3323 idx = con2fb_map[fg_console];
3324
3325 if (idx == -1 || registered_fb[idx] == NULL)
3326 goto err;
3327
3328 info = registered_fb[idx];
3329 rotate = simple_strtoul(buf, last, 0);
3330 fbcon_rotate(info, rotate);
3331err:
3332 release_console_sem();
3333 return count;
3334}
3335
0c6c1ce0
AD		 3336static ssize_t store_rotate_all(struct device *device,
3337 struct device_attribute *attr,const char *buf,
3338 size_t count)
9a179176
AD		 3339{
3340 struct fb_info *info;
3341 int rotate, idx;
3342 char **last = NULL;
3343
e614b18d
AD		 3344 if (fbcon_has_exited)
3345 return count;
3346
9a179176
AD		 3347 acquire_console_sem();
3348 idx = con2fb_map[fg_console];
3349
3350 if (idx == -1 || registered_fb[idx] == NULL)
3351 goto err;
3352
3353 info = registered_fb[idx];
3354 rotate = simple_strtoul(buf, last, 0);
3355 fbcon_rotate_all(info, rotate);
3356err:
3357 release_console_sem();
3358 return count;
3359}
3360
0c6c1ce0
AD		 3361static ssize_t show_rotate(struct device *device,
3362 struct device_attribute *attr,char *buf)
9a179176
AD		 3363{
3364 struct fb_info *info;
3365 int rotate = 0, idx;
3366
e614b18d
AD		 3367 if (fbcon_has_exited)
3368 return 0;
3369
9a179176
AD		 3370 acquire_console_sem();
3371 idx = con2fb_map[fg_console];
3372
3373 if (idx == -1 || registered_fb[idx] == NULL)
3374 goto err;
3375
3376 info = registered_fb[idx];
3377 rotate = fbcon_get_rotate(info);
3378err:
3379 release_console_sem();
3380 return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3381}
3382
0c6c1ce0
AD		 3383static ssize_t show_cursor_blink(struct device *device,
3384 struct device_attribute *attr, char *buf)
acba9cd0
AD		 3385{
3386 struct fb_info *info;
3387 struct fbcon_ops *ops;
3388 int idx, blink = -1;
3389
3390 if (fbcon_has_exited)
3391 return 0;
3392
3393 acquire_console_sem();
3394 idx = con2fb_map[fg_console];
3395
3396 if (idx == -1 || registered_fb[idx] == NULL)
3397 goto err;
3398
3399 info = registered_fb[idx];
3400 ops = info->fbcon_par;
3401
3402 if (!ops)
3403 goto err;
3404
3405 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3406err:
3407 release_console_sem();
3408 return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3409}
3410
0c6c1ce0
AD		 3411static ssize_t store_cursor_blink(struct device *device,
3412 struct device_attribute *attr,
acba9cd0
AD		 3413 const char *buf, size_t count)
3414{
3415 struct fb_info *info;
3416 int blink, idx;
3417 char **last = NULL;
3418
3419 if (fbcon_has_exited)
3420 return count;
3421
3422 acquire_console_sem();
3423 idx = con2fb_map[fg_console];
3424
3425 if (idx == -1 || registered_fb[idx] == NULL)
3426 goto err;
3427
3428 info = registered_fb[idx];
3429
3430 if (!info->fbcon_par)
3431 goto err;
3432
3433 blink = simple_strtoul(buf, last, 0);
3434
3435 if (blink) {
3436 fbcon_cursor_noblink = 0;
3437 fbcon_add_cursor_timer(info);
3438 } else {
3439 fbcon_cursor_noblink = 1;
3440 fbcon_del_cursor_timer(info);
3441 }
3442
3443err:
3444 release_console_sem();
3445 return count;
3446}
3447
0c6c1ce0 3448static struct device_attribute device_attrs[] = {
9a179176
AD		 3449 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3450 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
acba9cd0
AD		 3451 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3452 store_cursor_blink),
9a179176
AD		 3453};
3454
0c6c1ce0 3455static int fbcon_init_device(void)
9a179176 3456{
0a727dea
AD		 3457 int i, error = 0;
3458
3459 fbcon_has_sysfs = 1;
3460
0c6c1ce0
AD		 3461 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
3462 error = device_create_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3463
3464 if (error)
3465 break;
3466 }
3467
3468 if (error) {
3469 while (--i >= 0)
0c6c1ce0 3470 device_remove_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3471
3472 fbcon_has_sysfs = 0;
3473 }
9a179176 3474
9a179176
AD		 3475 return 0;
3476}
3477
5428b044 3478static void fbcon_start(void)
1da177e4 3479{
5428b044
AD		 3480 if (num_registered_fb) {
3481 int i;
9a179176 3482
5428b044 3483 acquire_console_sem();
1da177e4 3484
1da177e4
LT		 3485 for (i = 0; i < FB_MAX; i++) {
3486 if (registered_fb[i] != NULL) {
3487 info_idx = i;
3488 break;
3489 }
3490 }
5428b044
AD		 3491
3492 release_console_sem();
1da177e4
LT		 3493 fbcon_takeover(0);
3494 }
9a179176
AD		 3495}
3496
5428b044 3497static void fbcon_exit(void)
9a179176 3498{
e55186fe
AD		 3499 struct fb_info *info;
3500 int i, j, mapped;
3501
e614b18d
AD		 3502 if (fbcon_has_exited)
3503 return;
3504
e55186fe 3505 kfree((void *)softback_buf);
5428b044 3506 softback_buf = 0UL;
e55186fe
AD		 3507
3508 for (i = 0; i < FB_MAX; i++) {
beaa4867
GL		 3509 int pending;
3510
e55186fe
AD		 3511 mapped = 0;
3512 info = registered_fb[i];
3513
3514 if (info == NULL)
3515 continue;
3516
beaa4867
GL		 3517 pending = cancel_work_sync(&info->queue);
3518 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" :
3519 "no"));
3520
e614b18d
AD		 3521 for (j = first_fb_vc; j <= last_fb_vc; j++) {
3522 if (con2fb_map[j] == i)
e55186fe 3523 mapped = 1;
e55186fe
AD		 3524 }
3525
3526 if (mapped) {
3527 if (info->fbops->fb_release)
3528 info->fbops->fb_release(info, 0);
3529 module_put(info->fbops->owner);
5428b044
AD		 3530
3531 if (info->fbcon_par) {
e299dd4d
DJ		 3532 struct fbcon_ops *ops = info->fbcon_par;
3533
5428b044 3534 fbcon_del_cursor_timer(info);
e299dd4d 3535 kfree(ops->cursor_src);
5428b044
AD		 3536 kfree(info->fbcon_par);
3537 info->fbcon_par = NULL;
3538 }
3539
3540 if (info->queue.func == fb_flashcursor)
3541 info->queue.func = NULL;
e55186fe
AD		 3542 }
3543 }
3544
e614b18d 3545 fbcon_has_exited = 1;
5428b044
AD		 3546}
3547
3548static int __init fb_console_init(void)
3549{
3550 int i;
3551
3552 acquire_console_sem();
3553 fb_register_client(&fbcon_event_notifier);
77997aaa
GKH		 3554 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
3555 "fbcon");
5428b044 3556
0c6c1ce0
AD		 3557 if (IS_ERR(fbcon_device)) {
3558 printk(KERN_WARNING "Unable to create device "
5428b044 3559 "for fbcon; errno = %ld\n",
0c6c1ce0
AD		 3560 PTR_ERR(fbcon_device));
3561 fbcon_device = NULL;
5428b044 3562 } else
0c6c1ce0 3563 fbcon_init_device();
5428b044
AD		 3564
3565 for (i = 0; i < MAX_NR_CONSOLES; i++)
3566 con2fb_map[i] = -1;
3567
3568 release_console_sem();
3569 fbcon_start();
3570 return 0;
3571}
3572
3573module_init(fb_console_init);
3574
3575#ifdef MODULE
3576
0c6c1ce0 3577static void __exit fbcon_deinit_device(void)
5428b044
AD		 3578{
3579 int i;
3580
0a727dea 3581 if (fbcon_has_sysfs) {
0c6c1ce0
AD		 3582 for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
3583 device_remove_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3584
3585 fbcon_has_sysfs = 0;
3586 }
9a179176
AD		 3587}
3588
1da177e4
LT		 3589static void __exit fb_console_exit(void)
3590{
3591 acquire_console_sem();
3592 fb_unregister_client(&fbcon_event_notifier);
0c6c1ce0
AD		 3593 fbcon_deinit_device();
3594 device_destroy(fb_class, MKDEV(0, 0));
e614b18d 3595 fbcon_exit();
1da177e4 3596 release_console_sem();
e614b18d 3597 unregister_con_driver(&fb_con);
1da177e4
LT		 3598}
3599
3600module_exit(fb_console_exit);
3601
3602#endif
3603
3604MODULE_LICENSE("GPL");
Clone of davem's net-next-2.6 tree