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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>
6104c370 71#include <linux/fbcon.h>
1da177e4
LT		 72#include <linux/vt_kern.h>
73#include <linux/selection.h>
74#include <linux/font.h>
75#include <linux/smp.h>
76#include <linux/init.h>
77#include <linux/interrupt.h>
78#include <linux/crc32.h> /* For counting font checksums */
623e71b0 79#include <asm/fb.h>
1da177e4 80#include <asm/irq.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 */
b0d8e409 139static int initial_rotation = -1;
0a727dea 140static int fbcon_has_sysfs;
74c1c8b3 141static int margin_color;
e4fc2761 142
1da177e4
LT		 143static const struct consw fb_con;
144
145#define CM_SOFTBACK (8)
146
147#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
148
1da177e4
LT		 149static int fbcon_set_origin(struct vc_data *);
150
acba9cd0 151static int fbcon_cursor_noblink;
1da177e4
LT		 152
153#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
154
155/*
156 * Interface used by the world
157 */
158
159static const char *fbcon_startup(void);
160static void fbcon_init(struct vc_data *vc, int init);
161static void fbcon_deinit(struct vc_data *vc);
162static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
163 int width);
164static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
165static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
166 int count, int ypos, int xpos);
167static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
168static void fbcon_cursor(struct vc_data *vc, int mode);
1da177e4
LT		 169static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
170 int height, int width);
171static int fbcon_switch(struct vc_data *vc);
172static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
709280da 173static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table);
1da177e4
LT		 174
175/*
176 * Internal routines
177 */
1da177e4
LT		 178static __inline__ void ywrap_up(struct vc_data *vc, int count);
179static __inline__ void ywrap_down(struct vc_data *vc, int count);
180static __inline__ void ypan_up(struct vc_data *vc, int count);
181static __inline__ void ypan_down(struct vc_data *vc, int count);
182static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
183 int dy, int dx, int height, int width, u_int y_break);
184static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
d1baa4ff 185 int unit);
1da177e4
LT		 186static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
187 int line, int count, int dy);
a812c94b
AD		 188static void fbcon_modechanged(struct fb_info *info);
189static void fbcon_set_all_vcs(struct fb_info *info);
5428b044
AD		 190static void fbcon_start(void);
191static void fbcon_exit(void);
0c6c1ce0 192static struct device *fbcon_device;
9a179176 193
dbcbfe1e 194#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
b73deed3 195static inline void fbcon_set_rotation(struct fb_info *info)
dbcbfe1e
AD		 196{
197 struct fbcon_ops *ops = info->fbcon_par;
198
199 if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
b73deed3
AD		 200 ops->p->con_rotate < 4)
201 ops->rotate = ops->p->con_rotate;
dbcbfe1e
AD		 202 else
203 ops->rotate = 0;
204}
a812c94b
AD		 205
206static void fbcon_rotate(struct fb_info *info, u32 rotate)
207{
208 struct fbcon_ops *ops= info->fbcon_par;
209 struct fb_info *fb_info;
210
211 if (!ops || ops->currcon == -1)
212 return;
213
214 fb_info = registered_fb[con2fb_map[ops->currcon]];
215
216 if (info == fb_info) {
217 struct display *p = &fb_display[ops->currcon];
218
219 if (rotate < 4)
220 p->con_rotate = rotate;
221 else
222 p->con_rotate = 0;
223
224 fbcon_modechanged(info);
225 }
226}
227
228static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
229{
230 struct fbcon_ops *ops = info->fbcon_par;
231 struct vc_data *vc;
232 struct display *p;
233 int i;
234
235 if (!ops || ops->currcon < 0 || rotate > 3)
236 return;
237
e614b18d 238 for (i = first_fb_vc; i <= last_fb_vc; i++) {
a812c94b
AD		 239 vc = vc_cons[i].d;
240 if (!vc || vc->vc_mode != KD_TEXT ||
241 registered_fb[con2fb_map[i]] != info)
242 continue;
243
244 p = &fb_display[vc->vc_num];
245 p->con_rotate = rotate;
246 }
247
248 fbcon_set_all_vcs(info);
249}
dbcbfe1e 250#else
b73deed3 251static inline void fbcon_set_rotation(struct fb_info *info)
e4fc2761
AD		 252{
253 struct fbcon_ops *ops = info->fbcon_par;
254
255 ops->rotate = FB_ROTATE_UR;
256}
a812c94b
AD		 257
258static void fbcon_rotate(struct fb_info *info, u32 rotate)
259{
260 return;
261}
262
263static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
264{
265 return;
266}
dbcbfe1e 267#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
e4fc2761 268
a812c94b
AD		 269static int fbcon_get_rotate(struct fb_info *info)
270{
271 struct fbcon_ops *ops = info->fbcon_par;
272
273 return (ops) ? ops->rotate : 0;
274}
275
1da177e4
LT		 276static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
277{
278 struct fbcon_ops *ops = info->fbcon_par;
279
280 return (info->state != FBINFO_STATE_RUNNING ||
8fd4bd22
JB		 281 vc->vc_mode != KD_TEXT || ops->graphics) &&
282 !vt_force_oops_output(vc);
1da177e4
LT		 283}
284
da909ce4 285static int get_color(struct vc_data *vc, struct fb_info *info,
1da177e4
LT		 286 u16 c, int is_fg)
287{
b8c90945 288 int depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 289 int color = 0;
290
291 if (console_blanked) {
292 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
293
294 c = vc->vc_video_erase_char & charmask;
295 }
296
297 if (depth != 1)
298 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
299 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
300
301 switch (depth) {
302 case 1:
303 {
91c43132 304 int col = mono_col(info);
1da177e4 305 /* 0 or 1 */
b8c90945
AD		 306 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
307 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
1da177e4
LT		 308
309 if (console_blanked)
310 fg = bg;
311
312 color = (is_fg) ? fg : bg;
313 break;
314 }
315 case 2:
316 /*
317 * Scale down 16-colors to 4 colors. Default 4-color palette
2cc38ed1
AD		 318 * is grayscale. However, simply dividing the values by 4
319 * will not work, as colors 1, 2 and 3 will be scaled-down
320 * to zero rendering them invisible. So empirically convert
321 * colors to a sane 4-level grayscale.
1da177e4 322 */
2cc38ed1
AD		 323 switch (color) {
324 case 0:
325 color = 0; /* black */
326 break;
327 case 1 ... 6:
328 color = 2; /* white */
329 break;
330 case 7 ... 8:
331 color = 1; /* gray */
332 break;
333 default:
334 color = 3; /* intense white */
335 break;
336 }
337 break;
1da177e4
LT		 338 case 3:
339 /*
340 * Last 8 entries of default 16-color palette is a more intense
341 * version of the first 8 (i.e., same chrominance, different
342 * luminance).
343 */
344 color &= 7;
345 break;
346 }
347
348
349 return color;
350}
351
4d9c5b6e
AD		 352static void fbcon_update_softback(struct vc_data *vc)
353{
354 int l = fbcon_softback_size / vc->vc_size_row;
355
356 if (l > 5)
357 softback_end = softback_buf + l * vc->vc_size_row;
358 else
359 /* Smaller scrollback makes no sense, and 0 would screw
360 the operation totally */
361 softback_top = 0;
362}
363
c4028958 364static void fb_flashcursor(struct work_struct *work)
1da177e4 365{
c4028958 366 struct fb_info *info = container_of(work, struct fb_info, queue);
1da177e4 367 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 368 struct vc_data *vc = NULL;
369 int c;
370 int mode;
d8636a27
DA		 371 int ret;
372
373 /* FIXME: we should sort out the unbind locking instead */
374 /* instead we just fail to flash the cursor if we can't get
375 * the lock instead of blocking fbcon deinit */
376 ret = console_trylock();
377 if (ret == 0)
378 return;
1da177e4 379
5428b044 380 if (ops && ops->currcon != -1)
1da177e4
LT		 381 vc = vc_cons[ops->currcon].d;
382
6ca8dfd7 383 if (!vc || !con_is_visible(vc) ||
dbd4f128 384 registered_fb[con2fb_map[vc->vc_num]] != info ||
212f2639 385 vc->vc_deccm != 1) {
ac751efa 386 console_unlock();
1da177e4 387 return;
5428b044
AD		 388 }
389
1da177e4
LT		 390 c = scr_readw((u16 *) vc->vc_pos);
391 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
392 CM_ERASE : CM_DRAW;
b73deed3 393 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
1da177e4 394 get_color(vc, info, c, 0));
ac751efa 395 console_unlock();
1da177e4
LT		 396}
397
6c789357 398static void cursor_timer_handler(struct timer_list *t)
1da177e4 399{
6c789357
KC		 400 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer);
401 struct fb_info *info = ops->info;
1da177e4 402
a85f1a41 403 queue_work(system_power_efficient_wq, &info->queue);
27a4c827 404 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
1da177e4
LT		 405}
406
88fb2c6e
AD		 407static void fbcon_add_cursor_timer(struct fb_info *info)
408{
409 struct fbcon_ops *ops = info->fbcon_par;
410
411 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
acba9cd0
AD		 412 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
413 !fbcon_cursor_noblink) {
88fb2c6e 414 if (!info->queue.func)
c4028958 415 INIT_WORK(&info->queue, fb_flashcursor);
88fb2c6e 416
6c789357 417 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0);
cd7b917c 418 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
88fb2c6e
AD		 419 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
420 }
421}
422
423static void fbcon_del_cursor_timer(struct fb_info *info)
424{
425 struct fbcon_ops *ops = info->fbcon_par;
426
427 if (info->queue.func == fb_flashcursor &&
428 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
429 del_timer_sync(&ops->cursor_timer);
430 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
431 }
432}
433
1da177e4
LT		 434#ifndef MODULE
435static int __init fb_console_setup(char *this_opt)
436{
437 char *options;
438 int i, j;
439
440 if (!this_opt || !*this_opt)
9b41046c 441 return 1;
1da177e4
LT		 442
443 while ((options = strsep(&this_opt, ",")) != NULL) {
37773c4e 444 if (!strncmp(options, "font:", 5)) {
e432964a 445 strlcpy(fontname, options + 5, sizeof(fontname));
37773c4e
MH		 446 continue;
447 }
1da177e4
LT		 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;
1da177e4 455 }
37773c4e
MH		 456 }
457 continue;
1da177e4
LT		 458 }
459
460 if (!strncmp(options, "map:", 4)) {
461 options += 4;
623e71b0 462 if (*options) {
1da177e4
LT		 463 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
464 if (!options[j])
465 j = 0;
466 con2fb_map_boot[i] =
467 (options[j++]-'0') % FB_MAX;
468 }
623e71b0 469
4769a9a5 470 fbcon_map_override();
623e71b0 471 }
37773c4e 472 continue;
1da177e4
LT		 473 }
474
475 if (!strncmp(options, "vc:", 3)) {
476 options += 3;
477 if (*options)
478 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
479 if (first_fb_vc < 0)
480 first_fb_vc = 0;
481 if (*options++ == '-')
482 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
483 fbcon_is_default = 0;
37773c4e
MH		 484 continue;
485 }
e4fc2761
AD		 486
487 if (!strncmp(options, "rotate:", 7)) {
488 options += 7;
489 if (*options)
2428e59b
MS		 490 initial_rotation = simple_strtoul(options, &options, 0);
491 if (initial_rotation > 3)
492 initial_rotation = 0;
37773c4e 493 continue;
e4fc2761 494 }
74c1c8b3
DL		 495
496 if (!strncmp(options, "margin:", 7)) {
497 options += 7;
498 if (*options)
499 margin_color = simple_strtoul(options, &options, 0);
74c1c8b3
DL		 500 continue;
501 }
1da177e4 502 }
9b41046c 503 return 1;
1da177e4
LT		 504}
505
506__setup("fbcon=", fb_console_setup);
507#endif
508
509static int search_fb_in_map(int idx)
510{
511 int i, retval = 0;
512
e614b18d 513 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 514 if (con2fb_map[i] == idx)
515 retval = 1;
516 }
517 return retval;
518}
519
520static int search_for_mapped_con(void)
521{
522 int i, retval = 0;
523
e614b18d 524 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 525 if (con2fb_map[i] != -1)
526 retval = 1;
527 }
528 return retval;
529}
530
50e244cc
AC		 531static int do_fbcon_takeover(int show_logo)
532{
533 int err, i;
534
535 if (!num_registered_fb)
536 return -ENODEV;
537
538 if (!show_logo)
539 logo_shown = FBCON_LOGO_DONTSHOW;
540
541 for (i = first_fb_vc; i <= last_fb_vc; i++)
542 con2fb_map[i] = info_idx;
543
544 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc,
545 fbcon_is_default);
546
547 if (err) {
548 for (i = first_fb_vc; i <= last_fb_vc; i++)
549 con2fb_map[i] = -1;
550 info_idx = -1;
551 } else {
552 fbcon_has_console_bind = 1;
1da177e4
LT		 553 }
554
555 return err;
556}
557
70802c60
AD		 558#ifdef MODULE
559static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
560 int cols, int rows, int new_cols, int new_rows)
561{
562 logo_shown = FBCON_LOGO_DONTSHOW;
563}
564#else
1da177e4
LT		 565static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
566 int cols, int rows, int new_cols, int new_rows)
567{
568 /* Need to make room for the logo */
9c44e5f6 569 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 570 int cnt, erase = vc->vc_video_erase_char, step;
571 unsigned short *save = NULL, *r, *q;
49a1d28f 572 int logo_height;
1da177e4 573
376b3ff5 574 if (info->fbops->owner) {
70802c60
AD		 575 logo_shown = FBCON_LOGO_DONTSHOW;
576 return;
577 }
578
1da177e4
LT		 579 /*
580 * remove underline attribute from erase character
581 * if black and white framebuffer.
582 */
b8c90945 583 if (fb_get_color_depth(&info->var, &info->fix) == 1)
1da177e4 584 erase &= ~0x400;
9c44e5f6 585 logo_height = fb_prepare_logo(info, ops->rotate);
416e74ea 586 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);
1da177e4
LT		 587 q = (unsigned short *) (vc->vc_origin +
588 vc->vc_size_row * rows);
589 step = logo_lines * cols;
590 for (r = q - logo_lines * cols; r < q; r++)
591 if (scr_readw(r) != vc->vc_video_erase_char)
592 break;
593 if (r != q && new_rows >= rows + logo_lines) {
6da2ec56
KC		 594 save = kmalloc(array3_size(logo_lines, new_cols, 2),
595 GFP_KERNEL);
1da177e4
LT		 596 if (save) {
597 int i = cols < new_cols ? cols : new_cols;
598 scr_memsetw(save, erase, logo_lines * new_cols * 2);
599 r = q - step;
600 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
601 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
602 r = q;
603 }
604 }
605 if (r == q) {
606 /* We can scroll screen down */
607 r = q - step - cols;
608 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
609 scr_memcpyw(r + step, r, vc->vc_size_row);
610 r -= cols;
611 }
612 if (!save) {
250038f5
GU		 613 int lines;
614 if (vc->vc_y + logo_lines >= rows)
615 lines = rows - vc->vc_y - 1;
616 else
617 lines = logo_lines;
618 vc->vc_y += lines;
619 vc->vc_pos += lines * vc->vc_size_row;
1da177e4
LT		 620 }
621 }
622 scr_memsetw((unsigned short *) vc->vc_origin,
623 erase,
624 vc->vc_size_row * logo_lines);
625
6ca8dfd7 626 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) {
1da177e4
LT		 627 fbcon_clear_margins(vc, 0);
628 update_screen(vc);
629 }
630
631 if (save) {
632 q = (unsigned short *) (vc->vc_origin +
633 vc->vc_size_row *
634 rows);
635 scr_memcpyw(q, save, logo_lines * new_cols * 2);
636 vc->vc_y += logo_lines;
637 vc->vc_pos += logo_lines * vc->vc_size_row;
638 kfree(save);
639 }
640
641 if (logo_lines > vc->vc_bottom) {
642 logo_shown = FBCON_LOGO_CANSHOW;
643 printk(KERN_INFO
644 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
645 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
646 logo_shown = FBCON_LOGO_DRAW;
647 vc->vc_top = logo_lines;
648 }
649}
70802c60 650#endif /* MODULE */
1da177e4
LT		 651
652#ifdef CONFIG_FB_TILEBLITTING
b73deed3 653static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 654{
655 struct fbcon_ops *ops = info->fbcon_par;
656
b73deed3 657 ops->p = &fb_display[vc->vc_num];
ab767201 658
1da177e4 659 if ((info->flags & FBINFO_MISC_TILEBLITTING))
b73deed3 660 fbcon_set_tileops(vc, info);
e4fc2761 661 else {
b73deed3 662 fbcon_set_rotation(info);
1da177e4 663 fbcon_set_bitops(ops);
e4fc2761 664 }
1da177e4 665}
38b4982c
AD		 666
667static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
668{
669 int err = 0;
670
671 if (info->flags & FBINFO_MISC_TILEBLITTING &&
672 info->tileops->fb_get_tilemax(info) < charcount)
673 err = 1;
674
675 return err;
676}
1da177e4 677#else
b73deed3 678static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 679{
680 struct fbcon_ops *ops = info->fbcon_par;
681
682 info->flags &= ~FBINFO_MISC_TILEBLITTING;
b73deed3
AD		 683 ops->p = &fb_display[vc->vc_num];
684 fbcon_set_rotation(info);
1da177e4
LT		 685 fbcon_set_bitops(ops);
686}
38b4982c
AD		 687
688static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
689{
690 return 0;
691}
692
1da177e4
LT		 693#endif /* CONFIG_MISC_TILEBLITTING */
694
695
696static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
697 int unit, int oldidx)
698{
699 struct fbcon_ops *ops = NULL;
700 int err = 0;
701
702 if (!try_module_get(info->fbops->owner))
703 err = -ENODEV;
704
705 if (!err && info->fbops->fb_open &&
706 info->fbops->fb_open(info, 0))
707 err = -ENODEV;
708
709 if (!err) {
a39bc34e 710 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 711 if (!ops)
712 err = -ENOMEM;
713 }
714
715 if (!err) {
a1e533ec 716 ops->cur_blink_jiffies = HZ / 5;
6c789357 717 ops->info = info;
1da177e4 718 info->fbcon_par = ops;
d1baa4ff
AD		 719
720 if (vc)
721 set_blitting_type(vc, info);
1da177e4
LT		 722 }
723
724 if (err) {
725 con2fb_map[unit] = oldidx;
726 module_put(info->fbops->owner);
727 }
728
729 return err;
730}
731
732static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
733 struct fb_info *newinfo, int unit,
734 int oldidx, int found)
735{
736 struct fbcon_ops *ops = oldinfo->fbcon_par;
0fcf6ada 737 int err = 0, ret;
1da177e4
LT		 738
739 if (oldinfo->fbops->fb_release &&
740 oldinfo->fbops->fb_release(oldinfo, 0)) {
741 con2fb_map[unit] = oldidx;
742 if (!found && newinfo->fbops->fb_release)
743 newinfo->fbops->fb_release(newinfo, 0);
744 if (!found)
745 module_put(newinfo->fbops->owner);
746 err = -ENODEV;
747 }
748
749 if (!err) {
88fb2c6e 750 fbcon_del_cursor_timer(oldinfo);
1da177e4
LT		 751 kfree(ops->cursor_state.mask);
752 kfree(ops->cursor_data);
7a966fbd 753 kfree(ops->cursor_src);
e4fc2761 754 kfree(ops->fontbuffer);
1da177e4
LT		 755 kfree(oldinfo->fbcon_par);
756 oldinfo->fbcon_par = NULL;
757 module_put(oldinfo->fbops->owner);
dd0314f7
AD		 758 /*
759 If oldinfo and newinfo are driving the same hardware,
760 the fb_release() method of oldinfo may attempt to
761 restore the hardware state. This will leave the
762 newinfo in an undefined state. Thus, a call to
763 fb_set_par() may be needed for the newinfo.
764 */
5f4dc28b 765 if (newinfo && newinfo->fbops->fb_set_par) {
0fcf6ada
FTS		 766 ret = newinfo->fbops->fb_set_par(newinfo);
767
768 if (ret)
769 printk(KERN_ERR "con2fb_release_oldinfo: "
770 "detected unhandled fb_set_par error, "
771 "error code %d\n", ret);
772 }
1da177e4
LT		 773 }
774
775 return err;
776}
777
1da177e4
LT		 778static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
779 int unit, int show_logo)
780{
781 struct fbcon_ops *ops = info->fbcon_par;
0fcf6ada 782 int ret;
1da177e4
LT		 783
784 ops->currcon = fg_console;
785
0fcf6ada
FTS		 786 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) {
787 ret = info->fbops->fb_set_par(info);
788
789 if (ret)
790 printk(KERN_ERR "con2fb_init_display: detected "
791 "unhandled fb_set_par error, "
792 "error code %d\n", ret);
793 }
1da177e4
LT		 794
795 ops->flags |= FBCON_FLAGS_INIT;
796 ops->graphics = 0;
d1baa4ff 797 fbcon_set_disp(info, &info->var, unit);
1da177e4
LT		 798
799 if (show_logo) {
800 struct vc_data *fg_vc = vc_cons[fg_console].d;
801 struct fb_info *fg_info =
802 registered_fb[con2fb_map[fg_console]];
803
804 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
805 fg_vc->vc_rows, fg_vc->vc_cols,
806 fg_vc->vc_rows);
807 }
808
809 update_screen(vc_cons[fg_console].d);
810}
811
812/**
813 * set_con2fb_map - map console to frame buffer device
814 * @unit: virtual console number to map
815 * @newidx: frame buffer index to map virtual console to
816 * @user: user request
817 *
818 * Maps a virtual console @unit to a frame buffer device
819 * @newidx.
054430e7
DA		 820 *
821 * This should be called with the console lock held.
1da177e4
LT		 822 */
823static int set_con2fb_map(int unit, int newidx, int user)
824{
825 struct vc_data *vc = vc_cons[unit].d;
826 int oldidx = con2fb_map[unit];
827 struct fb_info *info = registered_fb[newidx];
828 struct fb_info *oldinfo = NULL;
829 int found, err = 0;
830
831 if (oldidx == newidx)
832 return 0;
833
32b98bf8 834 if (!info)
e614b18d 835 return -EINVAL;
1da177e4 836
32b98bf8 837 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) {
1da177e4 838 info_idx = newidx;
054430e7 839 return do_fbcon_takeover(0);
1da177e4
LT		 840 }
841
842 if (oldidx != -1)
843 oldinfo = registered_fb[oldidx];
844
845 found = search_fb_in_map(newidx);
846
1da177e4
LT		 847 con2fb_map[unit] = newidx;
848 if (!err && !found)
849 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
850
851
852 /*
853 * If old fb is not mapped to any of the consoles,
854 * fbcon should release it.
855 */
856 if (!err && oldinfo && !search_fb_in_map(oldidx))
857 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
858 found);
859
860 if (!err) {
861 int show_logo = (fg_console == 0 && !user &&
862 logo_shown != FBCON_LOGO_DONTSHOW);
863
864 if (!found)
88fb2c6e 865 fbcon_add_cursor_timer(info);
1da177e4
LT		 866 con2fb_map_boot[unit] = newidx;
867 con2fb_init_display(vc, info, unit, show_logo);
868 }
869
e614b18d
AD		 870 if (!search_fb_in_map(info_idx))
871 info_idx = newidx;
872
1da177e4
LT		 873 return err;
874}
875
876/*
877 * Low Level Operations
878 */
155957f5 879/* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */
1da177e4
LT		 880static int var_to_display(struct display *disp,
881 struct fb_var_screeninfo *var,
882 struct fb_info *info)
883{
884 disp->xres_virtual = var->xres_virtual;
885 disp->yres_virtual = var->yres_virtual;
886 disp->bits_per_pixel = var->bits_per_pixel;
887 disp->grayscale = var->grayscale;
888 disp->nonstd = var->nonstd;
889 disp->accel_flags = var->accel_flags;
890 disp->height = var->height;
891 disp->width = var->width;
892 disp->red = var->red;
893 disp->green = var->green;
894 disp->blue = var->blue;
895 disp->transp = var->transp;
896 disp->rotate = var->rotate;
897 disp->mode = fb_match_mode(var, &info->modelist);
898 if (disp->mode == NULL)
899 /* This should not happen */
900 return -EINVAL;
901 return 0;
902}
903
904static void display_to_var(struct fb_var_screeninfo *var,
905 struct display *disp)
906{
907 fb_videomode_to_var(var, disp->mode);
908 var->xres_virtual = disp->xres_virtual;
909 var->yres_virtual = disp->yres_virtual;
910 var->bits_per_pixel = disp->bits_per_pixel;
911 var->grayscale = disp->grayscale;
912 var->nonstd = disp->nonstd;
913 var->accel_flags = disp->accel_flags;
914 var->height = disp->height;
915 var->width = disp->width;
916 var->red = disp->red;
917 var->green = disp->green;
918 var->blue = disp->blue;
919 var->transp = disp->transp;
920 var->rotate = disp->rotate;
921}
922
923static const char *fbcon_startup(void)
924{
925 const char *display_desc = "frame buffer device";
926 struct display *p = &fb_display[fg_console];
927 struct vc_data *vc = vc_cons[fg_console].d;
2f4516db 928 const struct font_desc *font = NULL;
1da177e4
LT		 929 struct module *owner;
930 struct fb_info *info = NULL;
931 struct fbcon_ops *ops;
932 int rows, cols;
1da177e4 933
1da177e4
LT		 934 /*
935 * If num_registered_fb is zero, this is a call for the dummy part.
936 * The frame buffer devices weren't initialized yet.
937 */
938 if (!num_registered_fb || info_idx == -1)
939 return display_desc;
940 /*
941 * Instead of blindly using registered_fb[0], we use info_idx, set by
942 * fb_console_init();
943 */
944 info = registered_fb[info_idx];
945 if (!info)
946 return NULL;
947
948 owner = info->fbops->owner;
949 if (!try_module_get(owner))
950 return NULL;
951 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
952 module_put(owner);
953 return NULL;
954 }
955
a39bc34e 956 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 957 if (!ops) {
958 module_put(owner);
959 return NULL;
960 }
961
1da177e4
LT		 962 ops->currcon = -1;
963 ops->graphics = 1;
e4fc2761 964 ops->cur_rotate = -1;
a1e533ec 965 ops->cur_blink_jiffies = HZ / 5;
d447ebf9 966 ops->info = info;
1da177e4 967 info->fbcon_par = ops;
c9e6a364
HG		 968
969 p->con_rotate = initial_rotation;
970 if (p->con_rotate == -1)
971 p->con_rotate = info->fbcon_rotate_hint;
972 if (p->con_rotate == -1)
f2f4946b 973 p->con_rotate = FB_ROTATE_UR;
c9e6a364 974
b73deed3 975 set_blitting_type(vc, info);
1da177e4
LT		 976
977 if (info->fix.type != FB_TYPE_TEXT) {
978 if (fbcon_softback_size) {
979 if (!softback_buf) {
980 softback_buf =
981 (unsigned long)
982 kmalloc(fbcon_softback_size,
983 GFP_KERNEL);
984 if (!softback_buf) {
985 fbcon_softback_size = 0;
986 softback_top = 0;
987 }
988 }
989 } else {
990 if (softback_buf) {
991 kfree((void *) softback_buf);
992 softback_buf = 0;
993 softback_top = 0;
994 }
995 }
996 if (softback_buf)
997 softback_in = softback_top = softback_curr =
998 softback_buf;
999 softback_lines = 0;
1000 }
1001
1002 /* Setup default font */
ae128786 1003 if (!p->fontdata && !vc->vc_font.data) {
1da177e4
LT		 1004 if (!fontname[0] || !(font = find_font(fontname)))
1005 font = get_default_font(info->var.xres,
2d2699d9
AD		 1006 info->var.yres,
1007 info->pixmap.blit_x,
1008 info->pixmap.blit_y);
1da177e4
LT		 1009 vc->vc_font.width = font->width;
1010 vc->vc_font.height = font->height;
2f4516db 1011 vc->vc_font.data = (void *)(p->fontdata = font->data);
1da177e4 1012 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
ae128786
DA		 1013 } else {
1014 p->fontdata = vc->vc_font.data;
1da177e4
LT		 1015 }
1016
e4fc2761
AD		 1017 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1018 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1019 cols /= vc->vc_font.width;
1020 rows /= vc->vc_font.height;
1da177e4
LT		 1021 vc_resize(vc, cols, rows);
1022
1023 DPRINTK("mode: %s\n", info->fix.id);
1024 DPRINTK("visual: %d\n", info->fix.visual);
1025 DPRINTK("res: %dx%d-%d\n", info->var.xres,
1026 info->var.yres,
1027 info->var.bits_per_pixel);
1028
88fb2c6e 1029 fbcon_add_cursor_timer(info);
e614b18d 1030 fbcon_has_exited = 0;
1da177e4
LT		 1031 return display_desc;
1032}
1033
1034static void fbcon_init(struct vc_data *vc, int init)
1035{
1036 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1037 struct fbcon_ops *ops;
1038 struct vc_data **default_mode = vc->vc_display_fg;
1039 struct vc_data *svc = *default_mode;
1040 struct display *t, *p = &fb_display[vc->vc_num];
1041 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
0fcf6ada 1042 int cap, ret;
1da177e4
LT		 1043
1044 if (info_idx == -1 || info == NULL)
1045 return;
306958e8
AB		 1046
1047 cap = info->flags;
1048
1da177e4
LT		 1049 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1050 (info->fix.type == FB_TYPE_TEXT))
1051 logo = 0;
1052
1da177e4
LT		 1053 if (var_to_display(p, &info->var, info))
1054 return;
1055
d1baa4ff
AD		 1056 if (!info->fbcon_par)
1057 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
1058
1da177e4
LT		 1059 /* If we are not the first console on this
1060 fb, copy the font from that console */
e614b18d
AD		 1061 t = &fb_display[fg_console];
1062 if (!p->fontdata) {
1063 if (t->fontdata) {
1064 struct vc_data *fvc = vc_cons[fg_console].d;
1065
1066 vc->vc_font.data = (void *)(p->fontdata =
1067 fvc->vc_font.data);
1068 vc->vc_font.width = fvc->vc_font.width;
1069 vc->vc_font.height = fvc->vc_font.height;
1070 p->userfont = t->userfont;
1071
1072 if (p->userfont)
1073 REFCOUNT(p->fontdata)++;
1074 } else {
1075 const struct font_desc *font = NULL;
1076
1077 if (!fontname[0] || !(font = find_font(fontname)))
1078 font = get_default_font(info->var.xres,
2d2699d9
AD		 1079 info->var.yres,
1080 info->pixmap.blit_x,
1081 info->pixmap.blit_y);
e614b18d
AD		 1082 vc->vc_font.width = font->width;
1083 vc->vc_font.height = font->height;
1084 vc->vc_font.data = (void *)(p->fontdata = font->data);
1085 vc->vc_font.charcount = 256; /* FIXME Need to
1086 support more fonts */
1087 }
1da177e4 1088 }
e614b18d 1089
1da177e4
LT		 1090 if (p->userfont)
1091 charcnt = FNTCHARCNT(p->fontdata);
e614b18d 1092
8fd4bd22 1093 vc->vc_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT);
b8c90945 1094 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1095 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1096 if (charcnt == 256) {
1097 vc->vc_hi_font_mask = 0;
1098 } else {
1099 vc->vc_hi_font_mask = 0x100;
1100 if (vc->vc_can_do_color)
1101 vc->vc_complement_mask <<= 1;
1102 }
1103
1104 if (!*svc->vc_uni_pagedir_loc)
1105 con_set_default_unimap(svc);
1106 if (!*vc->vc_uni_pagedir_loc)
1107 con_copy_unimap(vc, svc);
1108
e4fc2761 1109 ops = info->fbcon_par;
f235f664 1110 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
c9e6a364
HG		 1111
1112 p->con_rotate = initial_rotation;
1113 if (p->con_rotate == -1)
1114 p->con_rotate = info->fbcon_rotate_hint;
1115 if (p->con_rotate == -1)
f2f4946b 1116 p->con_rotate = FB_ROTATE_UR;
c9e6a364 1117
b73deed3 1118 set_blitting_type(vc, info);
e4fc2761 1119
1da177e4
LT		 1120 cols = vc->vc_cols;
1121 rows = vc->vc_rows;
e4fc2761
AD		 1122 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1123 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1124 new_cols /= vc->vc_font.width;
1125 new_rows /= vc->vc_font.height;
1da177e4 1126
1da177e4
LT		 1127 /*
1128 * We must always set the mode. The mode of the previous console
1129 * driver could be in the same resolution but we are using different
1130 * hardware so we have to initialize the hardware.
1131 *
1132 * We need to do it in fbcon_init() to prevent screen corruption.
1133 */
6ca8dfd7 1134 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) {
1da177e4 1135 if (info->fbops->fb_set_par &&
0fcf6ada
FTS		 1136 !(ops->flags & FBCON_FLAGS_INIT)) {
1137 ret = info->fbops->fb_set_par(info);
1138
1139 if (ret)
1140 printk(KERN_ERR "fbcon_init: detected "
1141 "unhandled fb_set_par error, "
1142 "error code %d\n", ret);
1143 }
1144
1da177e4
LT		 1145 ops->flags |= FBCON_FLAGS_INIT;
1146 }
1147
1148 ops->graphics = 0;
1149
1150 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1151 !(cap & FBINFO_HWACCEL_DISABLED))
1152 p->scrollmode = SCROLL_MOVE;
1153 else /* default to something safe */
1154 p->scrollmode = SCROLL_REDRAW;
1155
1156 /*
1157 * ++guenther: console.c:vc_allocate() relies on initializing
1158 * vc_{cols,rows}, but we must not set those if we are only
1159 * resizing the console.
1160 */
0035fe00 1161 if (init) {
1da177e4
LT		 1162 vc->vc_cols = new_cols;
1163 vc->vc_rows = new_rows;
0035fe00
JW		 1164 } else
1165 vc_resize(vc, new_cols, new_rows);
1da177e4
LT		 1166
1167 if (logo)
1168 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1169
4d9c5b6e
AD		 1170 if (vc == svc && softback_buf)
1171 fbcon_update_softback(vc);
e4fc2761 1172
b73deed3 1173 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 1174 ops->rotate = FB_ROTATE_UR;
b73deed3 1175 set_blitting_type(vc, info);
e4fc2761
AD		 1176 }
1177
1a37d5f5 1178 ops->p = &fb_display[fg_console];
1da177e4
LT		 1179}
1180
ae128786 1181static void fbcon_free_font(struct display *p, bool freefont)
e614b18d 1182{
ae128786 1183 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
e614b18d
AD		 1184 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1185 p->fontdata = NULL;
1186 p->userfont = 0;
1187}
1188
8aac7f34
TI		 1189static void set_vc_hi_font(struct vc_data *vc, bool set);
1190
1da177e4
LT		 1191static void fbcon_deinit(struct vc_data *vc)
1192{
1193 struct display *p = &fb_display[vc->vc_num];
e614b18d
AD		 1194 struct fb_info *info;
1195 struct fbcon_ops *ops;
1196 int idx;
ae128786 1197 bool free_font = true;
1da177e4 1198
e614b18d
AD		 1199 idx = con2fb_map[vc->vc_num];
1200
1201 if (idx == -1)
1202 goto finished;
1203
1204 info = registered_fb[idx];
1205
1206 if (!info)
1207 goto finished;
1208
ae128786
DA		 1209 if (info->flags & FBINFO_MISC_FIRMWARE)
1210 free_font = false;
e614b18d
AD		 1211 ops = info->fbcon_par;
1212
1213 if (!ops)
1214 goto finished;
1215
6ca8dfd7 1216 if (con_is_visible(vc))
e614b18d
AD		 1217 fbcon_del_cursor_timer(info);
1218
1219 ops->flags &= ~FBCON_FLAGS_INIT;
1220finished:
1221
ae128786 1222 fbcon_free_font(p, free_font);
e6637d54
MK		 1223 if (free_font)
1224 vc->vc_font.data = NULL;
ae128786 1225
8aac7f34
TI		 1226 if (vc->vc_hi_font_mask)
1227 set_vc_hi_font(vc, false);
1228
e614b18d
AD		 1229 if (!con_is_bound(&fb_con))
1230 fbcon_exit();
1231
1232 return;
1da177e4
LT		 1233}
1234
1235/* ====================================================================== */
1236
1237/* fbcon_XXX routines - interface used by the world
1238 *
1239 * This system is now divided into two levels because of complications
1240 * caused by hardware scrolling. Top level functions:
1241 *
1242 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1243 *
1244 * handles y values in range [0, scr_height-1] that correspond to real
1245 * screen positions. y_wrap shift means that first line of bitmap may be
1246 * anywhere on this display. These functions convert lineoffsets to
1247 * bitmap offsets and deal with the wrap-around case by splitting blits.
1248 *
1249 * fbcon_bmove_physical_8() -- These functions fast implementations
1250 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1251 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1252 *
1253 * WARNING:
1254 *
1255 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1256 * Implies should only really hardware scroll in rows. Only reason for
1257 * restriction is simplicity & efficiency at the moment.
1258 */
1259
1da177e4
LT		 1260static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1261 int width)
1262{
1263 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1264 struct fbcon_ops *ops = info->fbcon_par;
1265
1266 struct display *p = &fb_display[vc->vc_num];
1267 u_int y_break;
1268
1269 if (fbcon_is_inactive(vc, info))
1270 return;
1271
1272 if (!height || !width)
1273 return;
1274
256fc0e5 1275 if (sy < vc->vc_top && vc->vc_top == logo_lines) {
c213ddf3 1276 vc->vc_top = 0;
256fc0e5
KM		 1277 /*
1278 * If the font dimensions are not an integral of the display
1279 * dimensions then the ops->clear below won't end up clearing
1280 * the margins. Call clear_margins here in case the logo
1281 * bitmap stretched into the margin area.
1282 */
1283 fbcon_clear_margins(vc, 0);
1284 }
c213ddf3 1285
1da177e4
LT		 1286 /* Split blits that cross physical y_wrap boundary */
1287
1288 y_break = p->vrows - p->yscroll;
1289 if (sy < y_break && sy + height - 1 >= y_break) {
1290 u_int b = y_break - sy;
1291 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1292 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1293 width);
1294 } else
1295 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1296}
1297
1298static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1299 int count, int ypos, int xpos)
1300{
1301 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1302 struct display *p = &fb_display[vc->vc_num];
1303 struct fbcon_ops *ops = info->fbcon_par;
1304
1305 if (!fbcon_is_inactive(vc, info))
1306 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1307 get_color(vc, info, scr_readw(s), 1),
1308 get_color(vc, info, scr_readw(s), 0));
1309}
1310
1311static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1312{
1313 unsigned short chr;
1314
1315 scr_writew(c, &chr);
1316 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1317}
1318
1319static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1320{
1321 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1322 struct fbcon_ops *ops = info->fbcon_par;
1323
1324 if (!fbcon_is_inactive(vc, info))
74c1c8b3 1325 ops->clear_margins(vc, info, margin_color, bottom_only);
1da177e4
LT		 1326}
1327
1328static void fbcon_cursor(struct vc_data *vc, int mode)
1329{
1330 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1331 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1332 int y;
1333 int c = scr_readw((u16 *) vc->vc_pos);
1334
2a17d7e8
SD		 1335 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
1336
d1e23066 1337 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1da177e4
LT		 1338 return;
1339
a5edce42
TR		 1340 if (vc->vc_cursor_type & 0x10)
1341 fbcon_del_cursor_timer(info);
1342 else
acba9cd0
AD		 1343 fbcon_add_cursor_timer(info);
1344
1da177e4
LT		 1345 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1346 if (mode & CM_SOFTBACK) {
1347 mode &= ~CM_SOFTBACK;
1348 y = softback_lines;
1349 } else {
1350 if (softback_lines)
1351 fbcon_set_origin(vc);
1352 y = 0;
1353 }
1354
b73deed3 1355 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1da177e4 1356 get_color(vc, info, c, 0));
1da177e4
LT		 1357}
1358
1359static int scrollback_phys_max = 0;
1360static int scrollback_max = 0;
1361static int scrollback_current = 0;
1362
1da177e4 1363static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
d1baa4ff 1364 int unit)
1da177e4 1365{
d1baa4ff
AD		 1366 struct display *p, *t;
1367 struct vc_data **default_mode, *vc;
1368 struct vc_data *svc;
e4fc2761 1369 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1370 int rows, cols, charcnt = 256;
1371
d1baa4ff
AD		 1372 p = &fb_display[unit];
1373
1da177e4
LT		 1374 if (var_to_display(p, var, info))
1375 return;
d1baa4ff
AD		 1376
1377 vc = vc_cons[unit].d;
1378
1379 if (!vc)
1380 return;
1381
1382 default_mode = vc->vc_display_fg;
1383 svc = *default_mode;
1da177e4 1384 t = &fb_display[svc->vc_num];
d1baa4ff 1385
1da177e4 1386 if (!vc->vc_font.data) {
2f4516db 1387 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1da177e4
LT		 1388 vc->vc_font.width = (*default_mode)->vc_font.width;
1389 vc->vc_font.height = (*default_mode)->vc_font.height;
1390 p->userfont = t->userfont;
1391 if (p->userfont)
1392 REFCOUNT(p->fontdata)++;
1393 }
1394 if (p->userfont)
1395 charcnt = FNTCHARCNT(p->fontdata);
1396
b8c90945
AD		 1397 var->activate = FB_ACTIVATE_NOW;
1398 info->var.activate = var->activate;
e4fc2761
AD		 1399 var->yoffset = info->var.yoffset;
1400 var->xoffset = info->var.xoffset;
b8c90945 1401 fb_set_var(info, var);
e4fc2761 1402 ops->var = info->var;
b8c90945 1403 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1404 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1405 if (charcnt == 256) {
1406 vc->vc_hi_font_mask = 0;
1407 } else {
1408 vc->vc_hi_font_mask = 0x100;
1409 if (vc->vc_can_do_color)
1410 vc->vc_complement_mask <<= 1;
1411 }
1412
1413 if (!*svc->vc_uni_pagedir_loc)
1414 con_set_default_unimap(svc);
1415 if (!*vc->vc_uni_pagedir_loc)
1416 con_copy_unimap(vc, svc);
1417
e4fc2761
AD		 1418 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1419 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1420 cols /= vc->vc_font.width;
1421 rows /= vc->vc_font.height;
1da177e4 1422 vc_resize(vc, cols, rows);
e4fc2761 1423
6ca8dfd7 1424 if (con_is_visible(vc)) {
1da177e4 1425 update_screen(vc);
4d9c5b6e
AD		 1426 if (softback_buf)
1427 fbcon_update_softback(vc);
1da177e4
LT		 1428 }
1429}
1430
1431static __inline__ void ywrap_up(struct vc_data *vc, int count)
1432{
1433 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1434 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1435 struct display *p = &fb_display[vc->vc_num];
1436
1437 p->yscroll += count;
1438 if (p->yscroll >= p->vrows) /* Deal with wrap */
1439 p->yscroll -= p->vrows;
e4fc2761
AD		 1440 ops->var.xoffset = 0;
1441 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1442 ops->var.vmode |= FB_VMODE_YWRAP;
1443 ops->update_start(info);
1da177e4
LT		 1444 scrollback_max += count;
1445 if (scrollback_max > scrollback_phys_max)
1446 scrollback_max = scrollback_phys_max;
1447 scrollback_current = 0;
1448}
1449
1450static __inline__ void ywrap_down(struct vc_data *vc, int count)
1451{
1452 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1453 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1454 struct display *p = &fb_display[vc->vc_num];
1455
1456 p->yscroll -= count;
1457 if (p->yscroll < 0) /* Deal with wrap */
1458 p->yscroll += p->vrows;
e4fc2761
AD		 1459 ops->var.xoffset = 0;
1460 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1461 ops->var.vmode |= FB_VMODE_YWRAP;
1462 ops->update_start(info);
1da177e4
LT		 1463 scrollback_max -= count;
1464 if (scrollback_max < 0)
1465 scrollback_max = 0;
1466 scrollback_current = 0;
1467}
1468
1469static __inline__ void ypan_up(struct vc_data *vc, int count)
1470{
1471 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1472 struct display *p = &fb_display[vc->vc_num];
1473 struct fbcon_ops *ops = info->fbcon_par;
1474
1475 p->yscroll += count;
1476 if (p->yscroll > p->vrows - vc->vc_rows) {
1477 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1478 0, 0, 0, vc->vc_rows, vc->vc_cols);
1479 p->yscroll -= p->vrows - vc->vc_rows;
1480 }
e4fc2761
AD		 1481
1482 ops->var.xoffset = 0;
1483 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1484 ops->var.vmode &= ~FB_VMODE_YWRAP;
1485 ops->update_start(info);
1da177e4
LT		 1486 fbcon_clear_margins(vc, 1);
1487 scrollback_max += count;
1488 if (scrollback_max > scrollback_phys_max)
1489 scrollback_max = scrollback_phys_max;
1490 scrollback_current = 0;
1491}
1492
1493static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1494{
1495 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1496 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1497 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1498
1499 p->yscroll += count;
a39bc34e 1500
1da177e4
LT		 1501 if (p->yscroll > p->vrows - vc->vc_rows) {
1502 p->yscroll -= p->vrows - vc->vc_rows;
1da177e4 1503 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
a39bc34e 1504 }
e4fc2761
AD		 1505
1506 ops->var.xoffset = 0;
1507 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1508 ops->var.vmode &= ~FB_VMODE_YWRAP;
1509 ops->update_start(info);
1da177e4
LT		 1510 fbcon_clear_margins(vc, 1);
1511 scrollback_max += count;
1512 if (scrollback_max > scrollback_phys_max)
1513 scrollback_max = scrollback_phys_max;
1514 scrollback_current = 0;
1515}
1516
1517static __inline__ void ypan_down(struct vc_data *vc, int count)
1518{
1519 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1520 struct display *p = &fb_display[vc->vc_num];
1521 struct fbcon_ops *ops = info->fbcon_par;
1522
1523 p->yscroll -= count;
1524 if (p->yscroll < 0) {
1525 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1526 0, vc->vc_rows, vc->vc_cols);
1527 p->yscroll += p->vrows - vc->vc_rows;
1528 }
e4fc2761
AD		 1529
1530 ops->var.xoffset = 0;
1531 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1532 ops->var.vmode &= ~FB_VMODE_YWRAP;
1533 ops->update_start(info);
1da177e4
LT		 1534 fbcon_clear_margins(vc, 1);
1535 scrollback_max -= count;
1536 if (scrollback_max < 0)
1537 scrollback_max = 0;
1538 scrollback_current = 0;
1539}
1540
1541static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1542{
1543 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1544 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1545 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1546
1547 p->yscroll -= count;
a39bc34e 1548
1da177e4
LT		 1549 if (p->yscroll < 0) {
1550 p->yscroll += p->vrows - vc->vc_rows;
1da177e4 1551 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
a39bc34e 1552 }
e4fc2761
AD		 1553
1554 ops->var.xoffset = 0;
1555 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1556 ops->var.vmode &= ~FB_VMODE_YWRAP;
1557 ops->update_start(info);
1da177e4
LT		 1558 fbcon_clear_margins(vc, 1);
1559 scrollback_max -= count;
1560 if (scrollback_max < 0)
1561 scrollback_max = 0;
1562 scrollback_current = 0;
1563}
1564
1565static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1566 long delta)
1567{
1568 int count = vc->vc_rows;
1569 unsigned short *d, *s;
1570 unsigned long n;
1571 int line = 0;
1572
1573 d = (u16 *) softback_curr;
1574 if (d == (u16 *) softback_in)
1575 d = (u16 *) vc->vc_origin;
1576 n = softback_curr + delta * vc->vc_size_row;
1577 softback_lines -= delta;
1578 if (delta < 0) {
1579 if (softback_curr < softback_top && n < softback_buf) {
1580 n += softback_end - softback_buf;
1581 if (n < softback_top) {
1582 softback_lines -=
1583 (softback_top - n) / vc->vc_size_row;
1584 n = softback_top;
1585 }
1586 } else if (softback_curr >= softback_top
1587 && n < softback_top) {
1588 softback_lines -=
1589 (softback_top - n) / vc->vc_size_row;
1590 n = softback_top;
1591 }
1592 } else {
1593 if (softback_curr > softback_in && n >= softback_end) {
1594 n += softback_buf - softback_end;
1595 if (n > softback_in) {
1596 n = softback_in;
1597 softback_lines = 0;
1598 }
1599 } else if (softback_curr <= softback_in && n > softback_in) {
1600 n = softback_in;
1601 softback_lines = 0;
1602 }
1603 }
1604 if (n == softback_curr)
1605 return;
1606 softback_curr = n;
1607 s = (u16 *) softback_curr;
1608 if (s == (u16 *) softback_in)
1609 s = (u16 *) vc->vc_origin;
1610 while (count--) {
1611 unsigned short *start;
1612 unsigned short *le;
1613 unsigned short c;
1614 int x = 0;
1615 unsigned short attr = 1;
1616
1617 start = s;
1618 le = advance_row(s, 1);
1619 do {
1620 c = scr_readw(s);
1621 if (attr != (c & 0xff00)) {
1622 attr = c & 0xff00;
1623 if (s > start) {
1624 fbcon_putcs(vc, start, s - start,
1625 line, x);
1626 x += s - start;
1627 start = s;
1628 }
1629 }
1630 if (c == scr_readw(d)) {
1631 if (s > start) {
1632 fbcon_putcs(vc, start, s - start,
1633 line, x);
1634 x += s - start + 1;
1635 start = s + 1;
1636 } else {
1637 x++;
1638 start++;
1639 }
1640 }
1641 s++;
1642 d++;
1643 } while (s < le);
1644 if (s > start)
1645 fbcon_putcs(vc, start, s - start, line, x);
1646 line++;
1647 if (d == (u16 *) softback_end)
1648 d = (u16 *) softback_buf;
1649 if (d == (u16 *) softback_in)
1650 d = (u16 *) vc->vc_origin;
1651 if (s == (u16 *) softback_end)
1652 s = (u16 *) softback_buf;
1653 if (s == (u16 *) softback_in)
1654 s = (u16 *) vc->vc_origin;
1655 }
1656}
1657
1658static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1659 int line, int count, int dy)
1660{
1661 unsigned short *s = (unsigned short *)
1662 (vc->vc_origin + vc->vc_size_row * line);
1663
1664 while (count--) {
1665 unsigned short *start = s;
1666 unsigned short *le = advance_row(s, 1);
1667 unsigned short c;
1668 int x = 0;
1669 unsigned short attr = 1;
1670
1671 do {
1672 c = scr_readw(s);
1673 if (attr != (c & 0xff00)) {
1674 attr = c & 0xff00;
1675 if (s > start) {
1676 fbcon_putcs(vc, start, s - start,
1677 dy, x);
1678 x += s - start;
1679 start = s;
1680 }
1681 }
1682 console_conditional_schedule();
1683 s++;
1684 } while (s < le);
1685 if (s > start)
1686 fbcon_putcs(vc, start, s - start, dy, x);
1687 console_conditional_schedule();
1688 dy++;
1689 }
1690}
1691
bad07ff7
KH		 1692static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1693 struct display *p, int line, int count, int ycount)
1694{
1695 int offset = ycount * vc->vc_cols;
1696 unsigned short *d = (unsigned short *)
1697 (vc->vc_origin + vc->vc_size_row * line);
1698 unsigned short *s = d + offset;
1699 struct fbcon_ops *ops = info->fbcon_par;
1700
1701 while (count--) {
1702 unsigned short *start = s;
1703 unsigned short *le = advance_row(s, 1);
1704 unsigned short c;
1705 int x = 0;
1706
1707 do {
1708 c = scr_readw(s);
1709
1710 if (c == scr_readw(d)) {
1711 if (s > start) {
1712 ops->bmove(vc, info, line + ycount, x,
1713 line, x, 1, s-start);
1714 x += s - start + 1;
1715 start = s + 1;
1716 } else {
1717 x++;
1718 start++;
1719 }
1720 }
1721
1722 scr_writew(c, d);
1723 console_conditional_schedule();
1724 s++;
1725 d++;
1726 } while (s < le);
1727 if (s > start)
1728 ops->bmove(vc, info, line + ycount, x, line, x, 1,
1729 s-start);
1730 console_conditional_schedule();
1731 if (ycount > 0)
1732 line++;
1733 else {
1734 line--;
1735 /* NOTE: We subtract two lines from these pointers */
1736 s -= vc->vc_size_row;
1737 d -= vc->vc_size_row;
1738 }
1739 }
1740}
1741
1da177e4
LT		 1742static void fbcon_redraw(struct vc_data *vc, struct display *p,
1743 int line, int count, int offset)
1744{
1745 unsigned short *d = (unsigned short *)
1746 (vc->vc_origin + vc->vc_size_row * line);
1747 unsigned short *s = d + offset;
1748
1749 while (count--) {
1750 unsigned short *start = s;
1751 unsigned short *le = advance_row(s, 1);
1752 unsigned short c;
1753 int x = 0;
1754 unsigned short attr = 1;
1755
1756 do {
1757 c = scr_readw(s);
1758 if (attr != (c & 0xff00)) {
1759 attr = c & 0xff00;
1760 if (s > start) {
1761 fbcon_putcs(vc, start, s - start,
1762 line, x);
1763 x += s - start;
1764 start = s;
1765 }
1766 }
1767 if (c == scr_readw(d)) {
1768 if (s > start) {
1769 fbcon_putcs(vc, start, s - start,
1770 line, x);
1771 x += s - start + 1;
1772 start = s + 1;
1773 } else {
1774 x++;
1775 start++;
1776 }
1777 }
1778 scr_writew(c, d);
1779 console_conditional_schedule();
1780 s++;
1781 d++;
1782 } while (s < le);
1783 if (s > start)
1784 fbcon_putcs(vc, start, s - start, line, x);
1785 console_conditional_schedule();
1786 if (offset > 0)
1787 line++;
1788 else {
1789 line--;
1790 /* NOTE: We subtract two lines from these pointers */
1791 s -= vc->vc_size_row;
1792 d -= vc->vc_size_row;
1793 }
1794 }
1795}
1796
1797static inline void fbcon_softback_note(struct vc_data *vc, int t,
1798 int count)
1799{
1800 unsigned short *p;
1801
1802 if (vc->vc_num != fg_console)
1803 return;
1804 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1805
1806 while (count) {
1807 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1808 count--;
1809 p = advance_row(p, 1);
1810 softback_in += vc->vc_size_row;
1811 if (softback_in == softback_end)
1812 softback_in = softback_buf;
1813 if (softback_in == softback_top) {
1814 softback_top += vc->vc_size_row;
1815 if (softback_top == softback_end)
1816 softback_top = softback_buf;
1817 }
1818 }
1819 softback_curr = softback_in;
1820}
1821
d705ff38
JS		 1822static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
1823 enum con_scroll dir, unsigned int count)
1da177e4
LT		 1824{
1825 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1826 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1827 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1828
1829 if (fbcon_is_inactive(vc, info))
d705ff38 1830 return true;
1da177e4
LT		 1831
1832 fbcon_cursor(vc, CM_ERASE);
1833
1834 /*
1835 * ++Geert: Only use ywrap/ypan if the console is in text mode
1836 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1837 * whole screen (prevents flicker).
1838 */
1839
1840 switch (dir) {
1841 case SM_UP:
1842 if (count > vc->vc_rows) /* Maximum realistic size */
1843 count = vc->vc_rows;
1844 if (softback_top)
1845 fbcon_softback_note(vc, t, count);
1846 if (logo_shown >= 0)
1847 goto redraw_up;
1848 switch (p->scrollmode) {
1849 case SCROLL_MOVE:
bad07ff7
KH		 1850 fbcon_redraw_blit(vc, info, p, t, b - t - count,
1851 count);
1852 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1853 scr_memsetw((unsigned short *) (vc->vc_origin +
1854 vc->vc_size_row *
1855 (b - count)),
93f78da4 1856 vc->vc_video_erase_char,
bad07ff7 1857 vc->vc_size_row * count);
d705ff38 1858 return true;
1da177e4
LT		 1859 break;
1860
1861 case SCROLL_WRAP_MOVE:
1862 if (b - t - count > 3 * vc->vc_rows >> 2) {
1863 if (t > 0)
1864 fbcon_bmove(vc, 0, 0, count, 0, t,
1865 vc->vc_cols);
1866 ywrap_up(vc, count);
1867 if (vc->vc_rows - b > 0)
1868 fbcon_bmove(vc, b - count, 0, b, 0,
1869 vc->vc_rows - b,
1870 vc->vc_cols);
1871 } else if (info->flags & FBINFO_READS_FAST)
1872 fbcon_bmove(vc, t + count, 0, t, 0,
1873 b - t - count, vc->vc_cols);
1874 else
1875 goto redraw_up;
1876 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1877 break;
1878
1879 case SCROLL_PAN_REDRAW:
1880 if ((p->yscroll + count <=
1881 2 * (p->vrows - vc->vc_rows))
1882 && ((!scroll_partial && (b - t == vc->vc_rows))
1883 || (scroll_partial
1884 && (b - t - count >
1885 3 * vc->vc_rows >> 2)))) {
1886 if (t > 0)
1887 fbcon_redraw_move(vc, p, 0, t, count);
1888 ypan_up_redraw(vc, t, count);
1889 if (vc->vc_rows - b > 0)
26e780e8 1890 fbcon_redraw_move(vc, p, b,
1da177e4
LT		 1891 vc->vc_rows - b, b);
1892 } else
1893 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1894 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1895 break;
1896
1897 case SCROLL_PAN_MOVE:
1898 if ((p->yscroll + count <=
1899 2 * (p->vrows - vc->vc_rows))
1900 && ((!scroll_partial && (b - t == vc->vc_rows))
1901 || (scroll_partial
1902 && (b - t - count >
1903 3 * vc->vc_rows >> 2)))) {
1904 if (t > 0)
1905 fbcon_bmove(vc, 0, 0, count, 0, t,
1906 vc->vc_cols);
1907 ypan_up(vc, count);
1908 if (vc->vc_rows - b > 0)
1909 fbcon_bmove(vc, b - count, 0, b, 0,
1910 vc->vc_rows - b,
1911 vc->vc_cols);
1912 } else if (info->flags & FBINFO_READS_FAST)
1913 fbcon_bmove(vc, t + count, 0, t, 0,
1914 b - t - count, vc->vc_cols);
1915 else
1916 goto redraw_up;
1917 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1918 break;
1919
1920 case SCROLL_REDRAW:
1921 redraw_up:
1922 fbcon_redraw(vc, p, t, b - t - count,
1923 count * vc->vc_cols);
1924 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1925 scr_memsetw((unsigned short *) (vc->vc_origin +
1926 vc->vc_size_row *
1927 (b - count)),
93f78da4 1928 vc->vc_video_erase_char,
1da177e4 1929 vc->vc_size_row * count);
d705ff38 1930 return true;
1da177e4
LT		 1931 }
1932 break;
1933
1934 case SM_DOWN:
1935 if (count > vc->vc_rows) /* Maximum realistic size */
1936 count = vc->vc_rows;
e703ecc3
JB		 1937 if (logo_shown >= 0)
1938 goto redraw_down;
1da177e4
LT		 1939 switch (p->scrollmode) {
1940 case SCROLL_MOVE:
bad07ff7
KH		 1941 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1942 -count);
1943 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1944 scr_memsetw((unsigned short *) (vc->vc_origin +
1945 vc->vc_size_row *
1946 t),
93f78da4 1947 vc->vc_video_erase_char,
bad07ff7 1948 vc->vc_size_row * count);
d705ff38 1949 return true;
1da177e4
LT		 1950 break;
1951
1952 case SCROLL_WRAP_MOVE:
1953 if (b - t - count > 3 * vc->vc_rows >> 2) {
1954 if (vc->vc_rows - b > 0)
1955 fbcon_bmove(vc, b, 0, b - count, 0,
1956 vc->vc_rows - b,
1957 vc->vc_cols);
1958 ywrap_down(vc, count);
1959 if (t > 0)
1960 fbcon_bmove(vc, count, 0, 0, 0, t,
1961 vc->vc_cols);
1962 } else if (info->flags & FBINFO_READS_FAST)
1963 fbcon_bmove(vc, t, 0, t + count, 0,
1964 b - t - count, vc->vc_cols);
1965 else
1966 goto redraw_down;
1967 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1968 break;
1969
1970 case SCROLL_PAN_MOVE:
1971 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1972 && ((!scroll_partial && (b - t == vc->vc_rows))
1973 || (scroll_partial
1974 && (b - t - count >
1975 3 * vc->vc_rows >> 2)))) {
1976 if (vc->vc_rows - b > 0)
1977 fbcon_bmove(vc, b, 0, b - count, 0,
1978 vc->vc_rows - b,
1979 vc->vc_cols);
1980 ypan_down(vc, count);
1981 if (t > 0)
1982 fbcon_bmove(vc, count, 0, 0, 0, t,
1983 vc->vc_cols);
1984 } else if (info->flags & FBINFO_READS_FAST)
1985 fbcon_bmove(vc, t, 0, t + count, 0,
1986 b - t - count, vc->vc_cols);
1987 else
1988 goto redraw_down;
1989 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1990 break;
1991
1992 case SCROLL_PAN_REDRAW:
1993 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1994 && ((!scroll_partial && (b - t == vc->vc_rows))
1995 || (scroll_partial
1996 && (b - t - count >
1997 3 * vc->vc_rows >> 2)))) {
1998 if (vc->vc_rows - b > 0)
1999 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
2000 b - count);
2001 ypan_down_redraw(vc, t, count);
2002 if (t > 0)
2003 fbcon_redraw_move(vc, p, count, t, 0);
2004 } else
2005 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
2006 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2007 break;
2008
2009 case SCROLL_REDRAW:
2010 redraw_down:
2011 fbcon_redraw(vc, p, b - 1, b - t - count,
2012 -count * vc->vc_cols);
2013 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2014 scr_memsetw((unsigned short *) (vc->vc_origin +
2015 vc->vc_size_row *
2016 t),
93f78da4 2017 vc->vc_video_erase_char,
1da177e4 2018 vc->vc_size_row * count);
d705ff38 2019 return true;
1da177e4
LT		 2020 }
2021 }
d705ff38 2022 return false;
1da177e4
LT		 2023}
2024
2025
2026static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
2027 int height, int width)
2028{
2029 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2030 struct display *p = &fb_display[vc->vc_num];
2031
2032 if (fbcon_is_inactive(vc, info))
2033 return;
2034
2035 if (!width || !height)
2036 return;
2037
2038 /* Split blits that cross physical y_wrap case.
2039 * Pathological case involves 4 blits, better to use recursive
2040 * code rather than unrolled case
2041 *
2042 * Recursive invocations don't need to erase the cursor over and
2043 * over again, so we use fbcon_bmove_rec()
2044 */
2045 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2046 p->vrows - p->yscroll);
2047}
2048
2049static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
2050 int dy, int dx, int height, int width, u_int y_break)
2051{
2052 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2053 struct fbcon_ops *ops = info->fbcon_par;
2054 u_int b;
2055
2056 if (sy < y_break && sy + height > y_break) {
2057 b = y_break - sy;
2058 if (dy < sy) { /* Avoid trashing self */
2059 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2060 y_break);
2061 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2062 height - b, width, y_break);
2063 } else {
2064 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2065 height - b, width, y_break);
2066 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2067 y_break);
2068 }
2069 return;
2070 }
2071
2072 if (dy < y_break && dy + height > y_break) {
2073 b = y_break - dy;
2074 if (dy < sy) { /* Avoid trashing self */
2075 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2076 y_break);
2077 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2078 height - b, width, y_break);
2079 } else {
2080 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2081 height - b, width, y_break);
2082 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2083 y_break);
2084 }
2085 return;
2086 }
2087 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2088 height, width);
2089}
2090
def1be2d 2091static void updatescrollmode(struct display *p,
e4fc2761 2092 struct fb_info *info,
1da177e4
LT		 2093 struct vc_data *vc)
2094{
e4fc2761 2095 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2096 int fh = vc->vc_font.height;
2097 int cap = info->flags;
e4fc2761
AD		 2098 u16 t = 0;
2099 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2100 info->fix.xpanstep);
2101 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2102 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2103 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2104 info->var.xres_virtual);
2105 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2106 divides(ypan, vc->vc_font.height) && vyres > yres;
2107 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2108 divides(ywrap, vc->vc_font.height) &&
244ab72d
KP		 2109 divides(vc->vc_font.height, vyres) &&
2110 divides(vc->vc_font.height, yres);
1da177e4 2111 int reading_fast = cap & FBINFO_READS_FAST;
e4fc2761
AD		 2112 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2113 !(cap & FBINFO_HWACCEL_DISABLED);
2114 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2115 !(cap & FBINFO_HWACCEL_DISABLED);
2116
2117 p->vrows = vyres/fh;
2118 if (yres > (fh * (vc->vc_rows + 1)))
2119 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2120 if ((yres % fh) && (vyres % fh < yres % fh))
1da177e4
LT		 2121 p->vrows--;
2122
2123 if (good_wrap || good_pan) {
2124 if (reading_fast || fast_copyarea)
e4fc2761
AD		 2125 p->scrollmode = good_wrap ?
2126 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1da177e4
LT		 2127 else
2128 p->scrollmode = good_wrap ? SCROLL_REDRAW :
2129 SCROLL_PAN_REDRAW;
2130 } else {
2131 if (reading_fast || (fast_copyarea && !fast_imageblit))
2132 p->scrollmode = SCROLL_MOVE;
2133 else
2134 p->scrollmode = SCROLL_REDRAW;
2135 }
2136}
2137
2138static int fbcon_resize(struct vc_data *vc, unsigned int width,
e400b6ec 2139 unsigned int height, unsigned int user)
1da177e4
LT		 2140{
2141 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2142 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2143 struct display *p = &fb_display[vc->vc_num];
2144 struct fb_var_screeninfo var = info->var;
e4fc2761
AD		 2145 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2146
2147 virt_w = FBCON_SWAP(ops->rotate, width, height);
2148 virt_h = FBCON_SWAP(ops->rotate, height, width);
2149 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2150 vc->vc_font.height);
2151 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2152 vc->vc_font.width);
2153 var.xres = virt_w * virt_fw;
2154 var.yres = virt_h * virt_fh;
1da177e4
LT		 2155 x_diff = info->var.xres - var.xres;
2156 y_diff = info->var.yres - var.yres;
e4fc2761
AD		 2157 if (x_diff < 0 || x_diff > virt_fw ||
2158 y_diff < 0 || y_diff > virt_fh) {
9791d763 2159 const struct fb_videomode *mode;
1da177e4
LT		 2160
2161 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2162 mode = fb_find_best_mode(&var, &info->modelist);
2163 if (mode == NULL)
2164 return -EINVAL;
3084a895 2165 display_to_var(&var, p);
1da177e4 2166 fb_videomode_to_var(&var, mode);
3084a895 2167
e4fc2761 2168 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
1da177e4 2169 return -EINVAL;
1da177e4
LT		 2170
2171 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
6ca8dfd7 2172 if (con_is_visible(vc)) {
1da177e4
LT		 2173 var.activate = FB_ACTIVATE_NOW |
2174 FB_ACTIVATE_FORCE;
2175 fb_set_var(info, &var);
2176 }
2177 var_to_display(p, &info->var, info);
e4fc2761 2178 ops->var = info->var;
1da177e4
LT		 2179 }
2180 updatescrollmode(p, info, vc);
2181 return 0;
2182}
2183
2184static int fbcon_switch(struct vc_data *vc)
2185{
88fb2c6e 2186 struct fb_info *info, *old_info = NULL;
e4fc2761 2187 struct fbcon_ops *ops;
1da177e4
LT		 2188 struct display *p = &fb_display[vc->vc_num];
2189 struct fb_var_screeninfo var;
0fcf6ada 2190 int i, ret, prev_console, charcnt = 256;
1da177e4
LT		 2191
2192 info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2193 ops = info->fbcon_par;
1da177e4
LT		 2194
2195 if (softback_top) {
1da177e4
LT		 2196 if (softback_lines)
2197 fbcon_set_origin(vc);
2198 softback_top = softback_curr = softback_in = softback_buf;
2199 softback_lines = 0;
4d9c5b6e 2200 fbcon_update_softback(vc);
1da177e4
LT		 2201 }
2202
2203 if (logo_shown >= 0) {
2204 struct vc_data *conp2 = vc_cons[logo_shown].d;
2205
2206 if (conp2->vc_top == logo_lines
2207 && conp2->vc_bottom == conp2->vc_rows)
2208 conp2->vc_top = 0;
2209 logo_shown = FBCON_LOGO_CANSHOW;
2210 }
2211
e4fc2761 2212 prev_console = ops->currcon;
88fb2c6e
AD		 2213 if (prev_console != -1)
2214 old_info = registered_fb[con2fb_map[prev_console]];
1da177e4
LT		 2215 /*
2216 * FIXME: If we have multiple fbdev's loaded, we need to
2217 * update all info->currcon. Perhaps, we can place this
2218 * in a centralized structure, but this might break some
2219 * drivers.
2220 *
2221 * info->currcon = vc->vc_num;
2222 */
2223 for (i = 0; i < FB_MAX; i++) {
2224 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
e4fc2761 2225 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
1da177e4 2226
e4fc2761 2227 o->currcon = vc->vc_num;
1da177e4
LT		 2228 }
2229 }
2230 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2231 display_to_var(&var, p);
2232 var.activate = FB_ACTIVATE_NOW;
2233
2234 /*
2235 * make sure we don't unnecessarily trip the memcmp()
2236 * in fb_set_var()
2237 */
2238 info->var.activate = var.activate;
10732c35 2239 var.vmode |= info->var.vmode & ~FB_VMODE_MASK;
1da177e4 2240 fb_set_var(info, &var);
e4fc2761 2241 ops->var = info->var;
1da177e4 2242
39942fd8
KP		 2243 if (old_info != NULL && (old_info != info ||
2244 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
0fcf6ada
FTS		 2245 if (info->fbops->fb_set_par) {
2246 ret = info->fbops->fb_set_par(info);
2247
2248 if (ret)
2249 printk(KERN_ERR "fbcon_switch: detected "
2250 "unhandled fb_set_par error, "
2251 "error code %d\n", ret);
2252 }
a39bc34e 2253
5428b044 2254 if (old_info != info)
a39bc34e 2255 fbcon_del_cursor_timer(old_info);
88fb2c6e 2256 }
1da177e4 2257
212f2639
AD		 2258 if (fbcon_is_inactive(vc, info) ||
2259 ops->blank_state != FB_BLANK_UNBLANK)
2260 fbcon_del_cursor_timer(info);
2261 else
2262 fbcon_add_cursor_timer(info);
2263
b73deed3 2264 set_blitting_type(vc, info);
e4fc2761
AD		 2265 ops->cursor_reset = 1;
2266
b73deed3 2267 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 2268 ops->rotate = FB_ROTATE_UR;
b73deed3 2269 set_blitting_type(vc, info);
e4fc2761 2270 }
1da177e4 2271
b8c90945 2272 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4 2273 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
56f0d64d
AD		 2274
2275 if (p->userfont)
2276 charcnt = FNTCHARCNT(vc->vc_font.data);
2277
2278 if (charcnt > 256)
2279 vc->vc_complement_mask <<= 1;
2280
1da177e4
LT		 2281 updatescrollmode(p, info, vc);
2282
2283 switch (p->scrollmode) {
2284 case SCROLL_WRAP_MOVE:
2285 scrollback_phys_max = p->vrows - vc->vc_rows;
2286 break;
2287 case SCROLL_PAN_MOVE:
2288 case SCROLL_PAN_REDRAW:
2289 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2290 if (scrollback_phys_max < 0)
2291 scrollback_phys_max = 0;
2292 break;
2293 default:
2294 scrollback_phys_max = 0;
2295 break;
2296 }
e4fc2761 2297
1da177e4
LT		 2298 scrollback_max = 0;
2299 scrollback_current = 0;
4e1567d3
AD		 2300
2301 if (!fbcon_is_inactive(vc, info)) {
2302 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2303 ops->update_start(info);
2304 }
2305
1da177e4
LT		 2306 fbcon_set_palette(vc, color_table);
2307 fbcon_clear_margins(vc, 0);
2308
2309 if (logo_shown == FBCON_LOGO_DRAW) {
2310
2311 logo_shown = fg_console;
2312 /* This is protected above by initmem_freed */
9c44e5f6 2313 fb_show_logo(info, ops->rotate);
1da177e4
LT		 2314 update_region(vc,
2315 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2316 vc->vc_size_row * (vc->vc_bottom -
2317 vc->vc_top) / 2);
2318 return 0;
2319 }
2320 return 1;
2321}
2322
2323static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2324 int blank)
2325{
994efacd
RP		 2326 struct fb_event event;
2327
1da177e4
LT		 2328 if (blank) {
2329 unsigned short charmask = vc->vc_hi_font_mask ?
2330 0x1ff : 0xff;
2331 unsigned short oldc;
2332
2333 oldc = vc->vc_video_erase_char;
2334 vc->vc_video_erase_char &= charmask;
2335 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2336 vc->vc_video_erase_char = oldc;
2337 }
994efacd
RP		 2338
2339
513adb58
AR		 2340 if (!lock_fb_info(info))
2341 return;
994efacd
RP		 2342 event.info = info;
2343 event.data = &blank;
2344 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
513adb58 2345 unlock_fb_info(info);
1da177e4
LT		 2346}
2347
2348static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2349{
2350 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2351 struct fbcon_ops *ops = info->fbcon_par;
2352
2353 if (mode_switch) {
2354 struct fb_var_screeninfo var = info->var;
2355
2356 ops->graphics = 1;
2357
2358 if (!blank) {
2359 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2360 fb_set_var(info, &var);
2361 ops->graphics = 0;
e4fc2761 2362 ops->var = info->var;
f5c15d0b 2363 }
1da177e4
LT		 2364 }
2365
2366 if (!fbcon_is_inactive(vc, info)) {
2367 if (ops->blank_state != blank) {
2368 ops->blank_state = blank;
2369 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2370 ops->cursor_flash = (!blank);
2371
bca404af
DB		 2372 if (!(info->flags & FBINFO_MISC_USEREVENT))
2373 if (fb_blank(info, blank))
2374 fbcon_generic_blank(vc, info, blank);
1da177e4
LT		 2375 }
2376
88fb2c6e
AD		 2377 if (!blank)
2378 update_screen(vc);
2379 }
2380
4d8a2d98 2381 if (mode_switch || fbcon_is_inactive(vc, info) ||
212f2639 2382 ops->blank_state != FB_BLANK_UNBLANK)
88fb2c6e 2383 fbcon_del_cursor_timer(info);
212f2639
AD		 2384 else
2385 fbcon_add_cursor_timer(info);
1da177e4 2386
88fb2c6e 2387 return 0;
1da177e4
LT		 2388}
2389
d219adc1
JB		 2390static int fbcon_debug_enter(struct vc_data *vc)
2391{
2392 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2393 struct fbcon_ops *ops = info->fbcon_par;
2394
2395 ops->save_graphics = ops->graphics;
2396 ops->graphics = 0;
2397 if (info->fbops->fb_debug_enter)
2398 info->fbops->fb_debug_enter(info);
2399 fbcon_set_palette(vc, color_table);
2400 return 0;
2401}
2402
2403static int fbcon_debug_leave(struct vc_data *vc)
2404{
2405 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2406 struct fbcon_ops *ops = info->fbcon_par;
2407
2408 ops->graphics = ops->save_graphics;
2409 if (info->fbops->fb_debug_leave)
2410 info->fbops->fb_debug_leave(info);
2411 return 0;
2412}
2413
1da177e4
LT		 2414static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2415{
2416 u8 *fontdata = vc->vc_font.data;
2417 u8 *data = font->data;
2418 int i, j;
2419
2420 font->width = vc->vc_font.width;
2421 font->height = vc->vc_font.height;
2422 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2423 if (!font->data)
2424 return 0;
2425
2426 if (font->width <= 8) {
2427 j = vc->vc_font.height;
2428 for (i = 0; i < font->charcount; i++) {
2429 memcpy(data, fontdata, j);
2430 memset(data + j, 0, 32 - j);
2431 data += 32;
2432 fontdata += j;
2433 }
2434 } else if (font->width <= 16) {
2435 j = vc->vc_font.height * 2;
2436 for (i = 0; i < font->charcount; i++) {
2437 memcpy(data, fontdata, j);
2438 memset(data + j, 0, 64 - j);
2439 data += 64;
2440 fontdata += j;
2441 }
2442 } else if (font->width <= 24) {
2443 for (i = 0; i < font->charcount; i++) {
2444 for (j = 0; j < vc->vc_font.height; j++) {
2445 *data++ = fontdata[0];
2446 *data++ = fontdata[1];
2447 *data++ = fontdata[2];
2448 fontdata += sizeof(u32);
2449 }
2450 memset(data, 0, 3 * (32 - j));
2451 data += 3 * (32 - j);
2452 }
2453 } else {
2454 j = vc->vc_font.height * 4;
2455 for (i = 0; i < font->charcount; i++) {
2456 memcpy(data, fontdata, j);
2457 memset(data + j, 0, 128 - j);
2458 data += 128;
2459 fontdata += j;
2460 }
2461 }
2462 return 0;
2463}
2464
8aac7f34
TI		 2465/* set/clear vc_hi_font_mask and update vc attrs accordingly */
2466static void set_vc_hi_font(struct vc_data *vc, bool set)
1da177e4 2467{
8aac7f34 2468 if (!set) {
1da177e4
LT		 2469 vc->vc_hi_font_mask = 0;
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 if (vc->vc_can_do_color) {
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 c = scr_readw(cp);
2483 scr_writew(((c & 0xfe00) >> 1) |
2484 (c & 0xff), cp);
2485 }
2486 c = vc->vc_video_erase_char;
2487 vc->vc_video_erase_char =
2488 ((c & 0xfe00) >> 1) | (c & 0xff);
2489 vc->vc_attr >>= 1;
2490 }
8aac7f34 2491 } else {
1da177e4
LT		 2492 vc->vc_hi_font_mask = 0x100;
2493 if (vc->vc_can_do_color) {
2494 vc->vc_complement_mask <<= 1;
2495 vc->vc_s_complement_mask <<= 1;
2496 }
2497
2498 /* ++Edmund: reorder the attribute bits */
2499 {
2500 unsigned short *cp =
2501 (unsigned short *) vc->vc_origin;
2502 int count = vc->vc_screenbuf_size / 2;
2503 unsigned short c;
2504 for (; count > 0; count--, cp++) {
2505 unsigned short newc;
2506 c = scr_readw(cp);
2507 if (vc->vc_can_do_color)
2508 newc =
2509 ((c & 0xff00) << 1) | (c &
2510 0xff);
2511 else
2512 newc = c & ~0x100;
2513 scr_writew(newc, cp);
2514 }
2515 c = vc->vc_video_erase_char;
2516 if (vc->vc_can_do_color) {
2517 vc->vc_video_erase_char =
2518 ((c & 0xff00) << 1) | (c & 0xff);
2519 vc->vc_attr <<= 1;
93f78da4 2520 } else
1da177e4
LT		 2521 vc->vc_video_erase_char = c & ~0x100;
2522 }
1da177e4 2523 }
8aac7f34
TI		 2524}
2525
2526static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2527 const u8 * data, int userfont)
2528{
2529 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2530 struct fbcon_ops *ops = info->fbcon_par;
2531 struct display *p = &fb_display[vc->vc_num];
2532 int resize;
2533 int cnt;
2534 char *old_data = NULL;
2535
2536 if (con_is_visible(vc) && softback_lines)
2537 fbcon_set_origin(vc);
2538
2539 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2540 if (p->userfont)
2541 old_data = vc->vc_font.data;
2542 if (userfont)
2543 cnt = FNTCHARCNT(data);
2544 else
2545 cnt = 256;
2546 vc->vc_font.data = (void *)(p->fontdata = data);
2547 if ((p->userfont = userfont))
2548 REFCOUNT(data)++;
2549 vc->vc_font.width = w;
2550 vc->vc_font.height = h;
2551 if (vc->vc_hi_font_mask && cnt == 256)
2552 set_vc_hi_font(vc, false);
2553 else if (!vc->vc_hi_font_mask && cnt == 512)
2554 set_vc_hi_font(vc, true);
1da177e4
LT		 2555
2556 if (resize) {
e4fc2761
AD		 2557 int cols, rows;
2558
2559 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2560 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2561 cols /= w;
2562 rows /= h;
2563 vc_resize(vc, cols, rows);
6ca8dfd7 2564 if (con_is_visible(vc) && softback_buf)
4d9c5b6e 2565 fbcon_update_softback(vc);
6ca8dfd7 2566 } else if (con_is_visible(vc)
1da177e4
LT		 2567 && vc->vc_mode == KD_TEXT) {
2568 fbcon_clear_margins(vc, 0);
2569 update_screen(vc);
2570 }
2571
2572 if (old_data && (--REFCOUNT(old_data) == 0))
2573 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2574 return 0;
2575}
2576
2577static int fbcon_copy_font(struct vc_data *vc, int con)
2578{
2579 struct display *od = &fb_display[con];
2580 struct console_font *f = &vc->vc_font;
2581
2582 if (od->fontdata == f->data)
2583 return 0; /* already the same font... */
2584 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2585}
2586
2587/*
2588 * User asked to set font; we are guaranteed that
2589 * a) width and height are in range 1..32
2590 * b) charcount does not exceed 512
2591 * but lets not assume that, since someone might someday want to use larger
2592 * fonts. And charcount of 512 is small for unicode support.
2593 *
2594 * However, user space gives the font in 32 rows , regardless of
2595 * actual font height. So a new API is needed if support for larger fonts
2596 * is ever implemented.
2597 */
2598
c396a5bf
KC		 2599static int fbcon_set_font(struct vc_data *vc, struct console_font *font,
2600 unsigned int flags)
1da177e4 2601{
2d2699d9 2602 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1da177e4
LT		 2603 unsigned charcount = font->charcount;
2604 int w = font->width;
2605 int h = font->height;
2606 int size;
2607 int i, csum;
2608 u8 *new_data, *data = font->data;
2609 int pitch = (font->width+7) >> 3;
2610
2611 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2612 * If not this check should be changed to charcount < 256 */
2613 if (charcount != 256 && charcount != 512)
2614 return -EINVAL;
2615
2d2699d9
AD		 2616 /* Make sure drawing engine can handle the font */
2617 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2618 !(info->pixmap.blit_y & (1 << (font->height - 1))))
2619 return -EINVAL;
38b4982c
AD		 2620
2621 /* Make sure driver can handle the font length */
2622 if (fbcon_invalid_charcount(info, charcount))
2623 return -EINVAL;
2d2699d9 2624
1da177e4
LT		 2625 size = h * pitch * charcount;
2626
2627 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2628
2629 if (!new_data)
2630 return -ENOMEM;
2631
2632 new_data += FONT_EXTRA_WORDS * sizeof(int);
2633 FNTSIZE(new_data) = size;
2634 FNTCHARCNT(new_data) = charcount;
2635 REFCOUNT(new_data) = 0; /* usage counter */
2636 for (i=0; i< charcount; i++) {
2637 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2638 }
2639
2640 /* Since linux has a nice crc32 function use it for counting font
2641 * checksums. */
2642 csum = crc32(0, new_data, size);
2643
2644 FNTSUM(new_data) = csum;
2645 /* Check if the same font is on some other console already */
e614b18d 2646 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 2647 struct vc_data *tmp = vc_cons[i].d;
2648
2649 if (fb_display[i].userfont &&
2650 fb_display[i].fontdata &&
2651 FNTSUM(fb_display[i].fontdata) == csum &&
2652 FNTSIZE(fb_display[i].fontdata) == size &&
2653 tmp->vc_font.width == w &&
2654 !memcmp(fb_display[i].fontdata, new_data, size)) {
2655 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2f4516db 2656 new_data = (u8 *)fb_display[i].fontdata;
1da177e4
LT		 2657 break;
2658 }
2659 }
2660 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2661}
2662
2663static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2664{
2665 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2f4516db 2666 const struct font_desc *f;
1da177e4
LT		 2667
2668 if (!name)
2d2699d9
AD		 2669 f = get_default_font(info->var.xres, info->var.yres,
2670 info->pixmap.blit_x, info->pixmap.blit_y);
1da177e4
LT		 2671 else if (!(f = find_font(name)))
2672 return -ENOENT;
2673
2674 font->width = f->width;
2675 font->height = f->height;
2676 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2677}
2678
2679static u16 palette_red[16];
2680static u16 palette_green[16];
2681static u16 palette_blue[16];
2682
2683static struct fb_cmap palette_cmap = {
2684 0, 16, palette_red, palette_green, palette_blue, NULL
2685};
2686
709280da 2687static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table)
1da177e4
LT		 2688{
2689 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2690 int i, j, k, depth;
2691 u8 val;
2692
2693 if (fbcon_is_inactive(vc, info))
709280da 2694 return;
1da177e4 2695
6ca8dfd7 2696 if (!con_is_visible(vc))
709280da 2697 return;
1da177e4 2698
b8c90945 2699 depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 2700 if (depth > 3) {
2701 for (i = j = 0; i < 16; i++) {
2702 k = table[i];
2703 val = vc->vc_palette[j++];
2704 palette_red[k] = (val << 8) | val;
2705 val = vc->vc_palette[j++];
2706 palette_green[k] = (val << 8) | val;
2707 val = vc->vc_palette[j++];
2708 palette_blue[k] = (val << 8) | val;
2709 }
2710 palette_cmap.len = 16;
2711 palette_cmap.start = 0;
2712 /*
2713 * If framebuffer is capable of less than 16 colors,
2714 * use default palette of fbcon.
2715 */
2716 } else
2717 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2718
709280da 2719 fb_set_cmap(&palette_cmap, info);
1da177e4
LT		 2720}
2721
2722static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2723{
2724 unsigned long p;
2725 int line;
2726
2727 if (vc->vc_num != fg_console || !softback_lines)
2728 return (u16 *) (vc->vc_origin + offset);
2729 line = offset / vc->vc_size_row;
2730 if (line >= softback_lines)
2731 return (u16 *) (vc->vc_origin + offset -
2732 softback_lines * vc->vc_size_row);
2733 p = softback_curr + offset;
2734 if (p >= softback_end)
2735 p += softback_buf - softback_end;
2736 return (u16 *) p;
2737}
2738
2739static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2740 int *px, int *py)
2741{
2742 unsigned long ret;
2743 int x, y;
2744
2745 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2746 unsigned long offset = (pos - vc->vc_origin) / 2;
2747
2748 x = offset % vc->vc_cols;
2749 y = offset / vc->vc_cols;
2750 if (vc->vc_num == fg_console)
2751 y += softback_lines;
2752 ret = pos + (vc->vc_cols - x) * 2;
2753 } else if (vc->vc_num == fg_console && softback_lines) {
2754 unsigned long offset = pos - softback_curr;
2755
2756 if (pos < softback_curr)
2757 offset += softback_end - softback_buf;
2758 offset /= 2;
2759 x = offset % vc->vc_cols;
2760 y = offset / vc->vc_cols;
2761 ret = pos + (vc->vc_cols - x) * 2;
2762 if (ret == softback_end)
2763 ret = softback_buf;
2764 if (ret == softback_in)
2765 ret = vc->vc_origin;
2766 } else {
2767 /* Should not happen */
2768 x = y = 0;
2769 ret = vc->vc_origin;
2770 }
2771 if (px)
2772 *px = x;
2773 if (py)
2774 *py = y;
2775 return ret;
2776}
2777
2778/* As we might be inside of softback, we may work with non-contiguous buffer,
2779 that's why we have to use a separate routine. */
2780static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2781{
2782 while (cnt--) {
2783 u16 a = scr_readw(p);
2784 if (!vc->vc_can_do_color)
2785 a ^= 0x0800;
2786 else if (vc->vc_hi_font_mask == 0x100)
2787 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2788 (((a) & 0x0e00) << 4);
2789 else
2790 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2791 (((a) & 0x0700) << 4);
2792 scr_writew(a, p++);
2793 if (p == (u16 *) softback_end)
2794 p = (u16 *) softback_buf;
2795 if (p == (u16 *) softback_in)
2796 p = (u16 *) vc->vc_origin;
2797 }
2798}
2799
97293de9 2800static void fbcon_scrolldelta(struct vc_data *vc, int lines)
1da177e4
LT		 2801{
2802 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
e4fc2761 2803 struct fbcon_ops *ops = info->fbcon_par;
2c6cc35c 2804 struct display *disp = &fb_display[fg_console];
1da177e4
LT		 2805 int offset, limit, scrollback_old;
2806
2807 if (softback_top) {
2808 if (vc->vc_num != fg_console)
97293de9 2809 return;
1da177e4 2810 if (vc->vc_mode != KD_TEXT || !lines)
97293de9 2811 return;
1da177e4
LT		 2812 if (logo_shown >= 0) {
2813 struct vc_data *conp2 = vc_cons[logo_shown].d;
2814
2815 if (conp2->vc_top == logo_lines
2816 && conp2->vc_bottom == conp2->vc_rows)
2817 conp2->vc_top = 0;
2818 if (logo_shown == vc->vc_num) {
2819 unsigned long p, q;
2820 int i;
2821
2822 p = softback_in;
2823 q = vc->vc_origin +
2824 logo_lines * vc->vc_size_row;
2825 for (i = 0; i < logo_lines; i++) {
2826 if (p == softback_top)
2827 break;
2828 if (p == softback_buf)
2829 p = softback_end;
2830 p -= vc->vc_size_row;
2831 q -= vc->vc_size_row;
2832 scr_memcpyw((u16 *) q, (u16 *) p,
2833 vc->vc_size_row);
2834 }
308af929 2835 softback_in = softback_curr = p;
1da177e4
LT		 2836 update_region(vc, vc->vc_origin,
2837 logo_lines * vc->vc_cols);
2838 }
2839 logo_shown = FBCON_LOGO_CANSHOW;
2840 }
2841 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2c6cc35c 2842 fbcon_redraw_softback(vc, disp, lines);
1da177e4 2843 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
97293de9 2844 return;
1da177e4
LT		 2845 }
2846
2847 if (!scrollback_phys_max)
97293de9 2848 return;
1da177e4
LT		 2849
2850 scrollback_old = scrollback_current;
2851 scrollback_current -= lines;
2852 if (scrollback_current < 0)
2853 scrollback_current = 0;
2854 else if (scrollback_current > scrollback_max)
2855 scrollback_current = scrollback_max;
2856 if (scrollback_current == scrollback_old)
97293de9 2857 return;
1da177e4
LT		 2858
2859 if (fbcon_is_inactive(vc, info))
97293de9 2860 return;
1da177e4
LT		 2861
2862 fbcon_cursor(vc, CM_ERASE);
2863
2c6cc35c
MS		 2864 offset = disp->yscroll - scrollback_current;
2865 limit = disp->vrows;
2866 switch (disp->scrollmode) {
1da177e4
LT		 2867 case SCROLL_WRAP_MOVE:
2868 info->var.vmode |= FB_VMODE_YWRAP;
2869 break;
2870 case SCROLL_PAN_MOVE:
2871 case SCROLL_PAN_REDRAW:
2872 limit -= vc->vc_rows;
2873 info->var.vmode &= ~FB_VMODE_YWRAP;
2874 break;
2875 }
2876 if (offset < 0)
2877 offset += limit;
2878 else if (offset >= limit)
2879 offset -= limit;
e4fc2761
AD		 2880
2881 ops->var.xoffset = 0;
2882 ops->var.yoffset = offset * vc->vc_font.height;
2883 ops->update_start(info);
2884
1da177e4
LT		 2885 if (!scrollback_current)
2886 fbcon_cursor(vc, CM_DRAW);
1da177e4
LT		 2887}
2888
2889static int fbcon_set_origin(struct vc_data *vc)
2890{
2891 if (softback_lines)
2892 fbcon_scrolldelta(vc, softback_lines);
2893 return 0;
2894}
2895
2896static void fbcon_suspended(struct fb_info *info)
2897{
2898 struct vc_data *vc = NULL;
2899 struct fbcon_ops *ops = info->fbcon_par;
2900
2901 if (!ops || ops->currcon < 0)
2902 return;
2903 vc = vc_cons[ops->currcon].d;
2904
2905 /* Clear cursor, restore saved data */
2906 fbcon_cursor(vc, CM_ERASE);
2907}
2908
2909static void fbcon_resumed(struct fb_info *info)
2910{
2911 struct vc_data *vc;
2912 struct fbcon_ops *ops = info->fbcon_par;
2913
2914 if (!ops || ops->currcon < 0)
2915 return;
2916 vc = vc_cons[ops->currcon].d;
2917
2918 update_screen(vc);
2919}
2920
2921static void fbcon_modechanged(struct fb_info *info)
2922{
2923 struct fbcon_ops *ops = info->fbcon_par;
2924 struct vc_data *vc;
2925 struct display *p;
2926 int rows, cols;
2927
2928 if (!ops || ops->currcon < 0)
2929 return;
2930 vc = vc_cons[ops->currcon].d;
e4fc2761
AD		 2931 if (vc->vc_mode != KD_TEXT ||
2932 registered_fb[con2fb_map[ops->currcon]] != info)
1da177e4
LT		 2933 return;
2934
2935 p = &fb_display[vc->vc_num];
b73deed3 2936 set_blitting_type(vc, info);
1da177e4 2937
6ca8dfd7 2938 if (con_is_visible(vc)) {
1da177e4 2939 var_to_display(p, &info->var, info);
e4fc2761
AD		 2940 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2941 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2942 cols /= vc->vc_font.width;
2943 rows /= vc->vc_font.height;
1da177e4
LT		 2944 vc_resize(vc, cols, rows);
2945 updatescrollmode(p, info, vc);
2946 scrollback_max = 0;
2947 scrollback_current = 0;
4e1567d3
AD		 2948
2949 if (!fbcon_is_inactive(vc, info)) {
2950 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2951 ops->update_start(info);
2952 }
2953
1da177e4
LT		 2954 fbcon_set_palette(vc, color_table);
2955 update_screen(vc);
4d9c5b6e
AD		 2956 if (softback_buf)
2957 fbcon_update_softback(vc);
1da177e4
LT		 2958 }
2959}
2960
7726e9e1
AD		 2961static void fbcon_set_all_vcs(struct fb_info *info)
2962{
2963 struct fbcon_ops *ops = info->fbcon_par;
2964 struct vc_data *vc;
2965 struct display *p;
95d67bb1 2966 int i, rows, cols, fg = -1;
7726e9e1
AD		 2967
2968 if (!ops || ops->currcon < 0)
2969 return;
2970
e614b18d 2971 for (i = first_fb_vc; i <= last_fb_vc; i++) {
7726e9e1
AD		 2972 vc = vc_cons[i].d;
2973 if (!vc || vc->vc_mode != KD_TEXT ||
2974 registered_fb[con2fb_map[i]] != info)
2975 continue;
2976
6ca8dfd7 2977 if (con_is_visible(vc)) {
95d67bb1
AD		 2978 fg = i;
2979 continue;
2980 }
2981
7726e9e1 2982 p = &fb_display[vc->vc_num];
b73deed3 2983 set_blitting_type(vc, info);
7726e9e1 2984 var_to_display(p, &info->var, info);
232fb69a
ON		 2985 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2986 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
e4fc2761
AD		 2987 cols /= vc->vc_font.width;
2988 rows /= vc->vc_font.height;
7726e9e1 2989 vc_resize(vc, cols, rows);
7726e9e1 2990 }
04a2fe57 2991
95d67bb1
AD		 2992 if (fg != -1)
2993 fbcon_modechanged(info);
7726e9e1
AD		 2994}
2995
1da177e4
LT		 2996static int fbcon_mode_deleted(struct fb_info *info,
2997 struct fb_videomode *mode)
2998{
2999 struct fb_info *fb_info;
3000 struct display *p;
3001 int i, j, found = 0;
3002
3003 /* before deletion, ensure that mode is not in use */
3004 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3005 j = con2fb_map[i];
3006 if (j == -1)
3007 continue;
3008 fb_info = registered_fb[j];
3009 if (fb_info != info)
3010 continue;
3011 p = &fb_display[i];
3012 if (!p || !p->mode)
3013 continue;
3014 if (fb_mode_is_equal(p->mode, mode)) {
3015 found = 1;
3016 break;
3017 }
3018 }
3019 return found;
3020}
3021
cfafca80
JB		 3022#ifdef CONFIG_VT_HW_CONSOLE_BINDING
3023static int fbcon_unbind(void)
3024{
3025 int ret;
3026
e93a9a86 3027 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc,
cfafca80 3028 fbcon_is_default);
2ddce3fd
IA		 3029
3030 if (!ret)
3031 fbcon_has_console_bind = 0;
3032
cfafca80
JB		 3033 return ret;
3034}
3035#else
3036static inline int fbcon_unbind(void)
3037{
3038 return -EINVAL;
3039}
3040#endif /* CONFIG_VT_HW_CONSOLE_BINDING */
3041
054430e7 3042/* called with console_lock held */
cfafca80
JB		 3043static int fbcon_fb_unbind(int idx)
3044{
3045 int i, new_idx = -1, ret = 0;
3046
2ddce3fd
IA		 3047 if (!fbcon_has_console_bind)
3048 return 0;
3049
cfafca80
JB		 3050 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3051 if (con2fb_map[i] != idx &&
3052 con2fb_map[i] != -1) {
3053 new_idx = i;
3054 break;
3055 }
3056 }
3057
3058 if (new_idx != -1) {
3059 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3060 if (con2fb_map[i] == idx)
3061 set_con2fb_map(i, new_idx, 0);
3062 }
5f4dc28b
KP		 3063 } else {
3064 struct fb_info *info = registered_fb[idx];
3065
3066 /* This is sort of like set_con2fb_map, except it maps
3067 * the consoles to no device and then releases the
3068 * oldinfo to free memory and cancel the cursor blink
3069 * timer. I can imagine this just becoming part of
3070 * set_con2fb_map where new_idx is -1
3071 */
3072 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3073 if (con2fb_map[i] == idx) {
3074 con2fb_map[i] = -1;
3075 if (!search_fb_in_map(idx)) {
3076 ret = con2fb_release_oldinfo(vc_cons[i].d,
3077 info, NULL, i,
3078 idx, 0);
3079 if (ret) {
3080 con2fb_map[i] = idx;
3081 return ret;
3082 }
3083 }
3084 }
3085 }
cfafca80 3086 ret = fbcon_unbind();
5f4dc28b 3087 }
cfafca80
JB		 3088
3089 return ret;
3090}
3091
054430e7 3092/* called with console_lock held */
623e71b0 3093static int fbcon_fb_unregistered(struct fb_info *info)
e614b18d 3094{
66c1ca01 3095 int i, idx;
e614b18d 3096
66c1ca01 3097 idx = info->node;
e614b18d
AD		 3098 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3099 if (con2fb_map[i] == idx)
3100 con2fb_map[i] = -1;
3101 }
3102
3103 if (idx == info_idx) {
3104 info_idx = -1;
3105
3106 for (i = 0; i < FB_MAX; i++) {
3107 if (registered_fb[i] != NULL) {
3108 info_idx = i;
3109 break;
3110 }
3111 }
3112 }
3113
3114 if (info_idx != -1) {
3115 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3116 if (con2fb_map[i] == -1)
3117 con2fb_map[i] = info_idx;
3118 }
3119 }
3120
623e71b0
AD		 3121 if (primary_device == idx)
3122 primary_device = -1;
3123
66c1ca01 3124 if (!num_registered_fb)
e93a9a86 3125 do_unregister_con_driver(&fb_con);
66c1ca01 3126
623e71b0
AD		 3127 return 0;
3128}
3129
054430e7 3130/* called with console_lock held */
6a9ee8af
DA		 3131static void fbcon_remap_all(int idx)
3132{
3133 int i;
3134 for (i = first_fb_vc; i <= last_fb_vc; i++)
3135 set_con2fb_map(i, idx, 0);
3136
3137 if (con_is_bound(&fb_con)) {
3138 printk(KERN_INFO "fbcon: Remapping primary device, "
3139 "fb%i, to tty %i-%i\n", idx,
3140 first_fb_vc + 1, last_fb_vc + 1);
3141 info_idx = idx;
3142 }
3143}
3144
623e71b0 3145#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
afd1db16 3146static void fbcon_select_primary(struct fb_info *info)
623e71b0 3147{
623e71b0
AD		 3148 if (!map_override && primary_device == -1 &&
3149 fb_is_primary_device(info)) {
afd1db16 3150 int i;
623e71b0 3151
afd1db16
AD		 3152 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
3153 info->fix.id, info->node);
623e71b0
AD		 3154 primary_device = info->node;
3155
afd1db16 3156 for (i = first_fb_vc; i <= last_fb_vc; i++)
623e71b0 3157 con2fb_map_boot[i] = primary_device;
623e71b0 3158
afd1db16
AD		 3159 if (con_is_bound(&fb_con)) {
3160 printk(KERN_INFO "fbcon: Remapping primary device, "
3161 "fb%i, to tty %i-%i\n", info->node,
3162 first_fb_vc + 1, last_fb_vc + 1);
3163 info_idx = primary_device;
623e71b0 3164 }
623e71b0
AD		 3165 }
3166
623e71b0
AD		 3167}
3168#else
afd1db16 3169static inline void fbcon_select_primary(struct fb_info *info)
623e71b0 3170{
afd1db16 3171 return;
e614b18d 3172}
623e71b0 3173#endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */
e614b18d 3174
054430e7 3175/* called with console_lock held */
623e71b0 3176static int fbcon_fb_registered(struct fb_info *info)
1da177e4 3177{
66c1ca01 3178 int ret = 0, i, idx;
623e71b0 3179
66c1ca01 3180 idx = info->node;
afd1db16 3181 fbcon_select_primary(info);
1da177e4
LT		 3182
3183 if (info_idx == -1) {
e614b18d 3184 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3185 if (con2fb_map_boot[i] == idx) {
3186 info_idx = idx;
3187 break;
3188 }
3189 }
e614b18d 3190
1da177e4 3191 if (info_idx != -1)
50e244cc 3192 ret = do_fbcon_takeover(1);
1da177e4 3193 } else {
e614b18d 3194 for (i = first_fb_vc; i <= last_fb_vc; i++) {
d1baa4ff 3195 if (con2fb_map_boot[i] == idx)
1da177e4
LT		 3196 set_con2fb_map(i, idx, 0);
3197 }
3198 }
3199
3200 return ret;
3201}
3202
3203static void fbcon_fb_blanked(struct fb_info *info, int blank)
3204{
3205 struct fbcon_ops *ops = info->fbcon_par;
3206 struct vc_data *vc;
3207
3208 if (!ops || ops->currcon < 0)
3209 return;
3210
3211 vc = vc_cons[ops->currcon].d;
3212 if (vc->vc_mode != KD_TEXT ||
3213 registered_fb[con2fb_map[ops->currcon]] != info)
3214 return;
3215
6ca8dfd7 3216 if (con_is_visible(vc)) {
1da177e4
LT		 3217 if (blank)
3218 do_blank_screen(0);
3219 else
3220 do_unblank_screen(0);
3221 }
3222 ops->blank_state = blank;
3223}
3224
3225static void fbcon_new_modelist(struct fb_info *info)
3226{
3227 int i;
3228 struct vc_data *vc;
3229 struct fb_var_screeninfo var;
9791d763 3230 const struct fb_videomode *mode;
1da177e4 3231
e614b18d 3232 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3233 if (registered_fb[con2fb_map[i]] != info)
3234 continue;
3235 if (!fb_display[i].mode)
3236 continue;
3237 vc = vc_cons[i].d;
3238 display_to_var(&var, &fb_display[i]);
8fb6567e
MJ		 3239 mode = fb_find_nearest_mode(fb_display[i].mode,
3240 &info->modelist);
1da177e4 3241 fb_videomode_to_var(&var, mode);
d1baa4ff 3242 fbcon_set_disp(info, &var, vc->vc_num);
1da177e4
LT		 3243 }
3244}
3245
38a3dc51
AD		 3246static void fbcon_get_requirement(struct fb_info *info,
3247 struct fb_blit_caps *caps)
3248{
3249 struct vc_data *vc;
3250 struct display *p;
38a3dc51
AD		 3251
3252 if (caps->flags) {
167f07f1 3253 int i, charcnt;
38a3dc51
AD		 3254
3255 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3256 vc = vc_cons[i].d;
167f07f1
AD		 3257 if (vc && vc->vc_mode == KD_TEXT &&
3258 info->node == con2fb_map[i]) {
38a3dc51
AD		 3259 p = &fb_display[i];
3260 caps->x |= 1 << (vc->vc_font.width - 1);
3261 caps->y |= 1 << (vc->vc_font.height - 1);
3262 charcnt = (p->userfont) ?
3263 FNTCHARCNT(p->fontdata) : 256;
3264 if (caps->len < charcnt)
3265 caps->len = charcnt;
3266 }
3267 }
3268 } else {
3269 vc = vc_cons[fg_console].d;
3270
167f07f1
AD		 3271 if (vc && vc->vc_mode == KD_TEXT &&
3272 info->node == con2fb_map[fg_console]) {
38a3dc51 3273 p = &fb_display[fg_console];
167f07f1
AD		 3274 caps->x = 1 << (vc->vc_font.width - 1);
3275 caps->y = 1 << (vc->vc_font.height - 1);
3276 caps->len = (p->userfont) ?
38a3dc51 3277 FNTCHARCNT(p->fontdata) : 256;
38a3dc51
AD		 3278 }
3279 }
3280}
3281
66c1ca01 3282static int fbcon_event_notify(struct notifier_block *self,
1da177e4
LT		 3283 unsigned long action, void *data)
3284{
3285 struct fb_event *event = data;
3286 struct fb_info *info = event->info;
3287 struct fb_videomode *mode;
3288 struct fb_con2fbmap *con2fb;
38a3dc51 3289 struct fb_blit_caps *caps;
66c1ca01 3290 int idx, ret = 0;
1da177e4 3291
e614b18d
AD		 3292 /*
3293 * ignore all events except driver registration and deregistration
3294 * if fbcon is not active
3295 */
3296 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
3297 action == FB_EVENT_FB_UNREGISTERED))
3298 goto done;
3299
1da177e4
LT		 3300 switch(action) {
3301 case FB_EVENT_SUSPEND:
3302 fbcon_suspended(info);
3303 break;
3304 case FB_EVENT_RESUME:
3305 fbcon_resumed(info);
3306 break;
3307 case FB_EVENT_MODE_CHANGE:
3308 fbcon_modechanged(info);
3309 break;
7726e9e1
AD		 3310 case FB_EVENT_MODE_CHANGE_ALL:
3311 fbcon_set_all_vcs(info);
3312 break;
1da177e4
LT		 3313 case FB_EVENT_MODE_DELETE:
3314 mode = event->data;
3315 ret = fbcon_mode_deleted(info, mode);
3316 break;
cfafca80 3317 case FB_EVENT_FB_UNBIND:
66c1ca01 3318 idx = info->node;
66c1ca01 3319 ret = fbcon_fb_unbind(idx);
cfafca80 3320 break;
1da177e4 3321 case FB_EVENT_FB_REGISTERED:
623e71b0 3322 ret = fbcon_fb_registered(info);
1da177e4 3323 break;
e614b18d 3324 case FB_EVENT_FB_UNREGISTERED:
623e71b0 3325 ret = fbcon_fb_unregistered(info);
e614b18d 3326 break;
1da177e4 3327 case FB_EVENT_SET_CONSOLE_MAP:
054430e7 3328 /* called with console lock held */
1da177e4
LT		 3329 con2fb = event->data;
3330 ret = set_con2fb_map(con2fb->console - 1,
3331 con2fb->framebuffer, 1);
3332 break;
3333 case FB_EVENT_GET_CONSOLE_MAP:
3334 con2fb = event->data;
3335 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
3336 break;
3337 case FB_EVENT_BLANK:
3338 fbcon_fb_blanked(info, *(int *)event->data);
3339 break;
3340 case FB_EVENT_NEW_MODELIST:
3341 fbcon_new_modelist(info);
3342 break;
38a3dc51
AD		 3343 case FB_EVENT_GET_REQ:
3344 caps = event->data;
3345 fbcon_get_requirement(info, caps);
3346 break;
6a9ee8af
DA		 3347 case FB_EVENT_REMAP_ALL_CONSOLE:
3348 idx = info->node;
3349 fbcon_remap_all(idx);
3350 break;
1da177e4 3351 }
e614b18d 3352done:
1da177e4
LT		 3353 return ret;
3354}
3355
3356/*
3357 * The console `switch' structure for the frame buffer based console
3358 */
3359
3360static const struct consw fb_con = {
3361 .owner = THIS_MODULE,
3362 .con_startup = fbcon_startup,
3363 .con_init = fbcon_init,
3364 .con_deinit = fbcon_deinit,
3365 .con_clear = fbcon_clear,
3366 .con_putc = fbcon_putc,
3367 .con_putcs = fbcon_putcs,
3368 .con_cursor = fbcon_cursor,
3369 .con_scroll = fbcon_scroll,
1da177e4
LT		 3370 .con_switch = fbcon_switch,
3371 .con_blank = fbcon_blank,
3372 .con_font_set = fbcon_set_font,
3373 .con_font_get = fbcon_get_font,
3374 .con_font_default = fbcon_set_def_font,
3375 .con_font_copy = fbcon_copy_font,
3376 .con_set_palette = fbcon_set_palette,
3377 .con_scrolldelta = fbcon_scrolldelta,
3378 .con_set_origin = fbcon_set_origin,
3379 .con_invert_region = fbcon_invert_region,
3380 .con_screen_pos = fbcon_screen_pos,
3381 .con_getxy = fbcon_getxy,
3382 .con_resize = fbcon_resize,
d219adc1
JB		 3383 .con_debug_enter = fbcon_debug_enter,
3384 .con_debug_leave = fbcon_debug_leave,
1da177e4
LT		 3385};
3386
3387static struct notifier_block fbcon_event_notifier = {
3388 .notifier_call = fbcon_event_notify,
3389};
3390
0c6c1ce0
AD		 3391static ssize_t store_rotate(struct device *device,
3392 struct device_attribute *attr, const char *buf,
3393 size_t count)
9a179176
AD		 3394{
3395 struct fb_info *info;
3396 int rotate, idx;
3397 char **last = NULL;
3398
e614b18d
AD		 3399 if (fbcon_has_exited)
3400 return count;
3401
ac751efa 3402 console_lock();
9a179176
AD		 3403 idx = con2fb_map[fg_console];
3404
3405 if (idx == -1 || registered_fb[idx] == NULL)
3406 goto err;
3407
3408 info = registered_fb[idx];
3409 rotate = simple_strtoul(buf, last, 0);
3410 fbcon_rotate(info, rotate);
3411err:
ac751efa 3412 console_unlock();
9a179176
AD		 3413 return count;
3414}
3415
0c6c1ce0
AD		 3416static ssize_t store_rotate_all(struct device *device,
3417 struct device_attribute *attr,const char *buf,
3418 size_t count)
9a179176
AD		 3419{
3420 struct fb_info *info;
3421 int rotate, idx;
3422 char **last = NULL;
3423
e614b18d
AD		 3424 if (fbcon_has_exited)
3425 return count;
3426
ac751efa 3427 console_lock();
9a179176
AD		 3428 idx = con2fb_map[fg_console];
3429
3430 if (idx == -1 || registered_fb[idx] == NULL)
3431 goto err;
3432
3433 info = registered_fb[idx];
3434 rotate = simple_strtoul(buf, last, 0);
3435 fbcon_rotate_all(info, rotate);
3436err:
ac751efa 3437 console_unlock();
9a179176
AD		 3438 return count;
3439}
3440
0c6c1ce0
AD		 3441static ssize_t show_rotate(struct device *device,
3442 struct device_attribute *attr,char *buf)
9a179176
AD		 3443{
3444 struct fb_info *info;
3445 int rotate = 0, idx;
3446
e614b18d
AD		 3447 if (fbcon_has_exited)
3448 return 0;
3449
ac751efa 3450 console_lock();
9a179176
AD		 3451 idx = con2fb_map[fg_console];
3452
3453 if (idx == -1 || registered_fb[idx] == NULL)
3454 goto err;
3455
3456 info = registered_fb[idx];
3457 rotate = fbcon_get_rotate(info);
3458err:
ac751efa 3459 console_unlock();
9a179176
AD		 3460 return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3461}
3462
0c6c1ce0
AD		 3463static ssize_t show_cursor_blink(struct device *device,
3464 struct device_attribute *attr, char *buf)
acba9cd0
AD		 3465{
3466 struct fb_info *info;
3467 struct fbcon_ops *ops;
3468 int idx, blink = -1;
3469
3470 if (fbcon_has_exited)
3471 return 0;
3472
ac751efa 3473 console_lock();
acba9cd0
AD		 3474 idx = con2fb_map[fg_console];
3475
3476 if (idx == -1 || registered_fb[idx] == NULL)
3477 goto err;
3478
3479 info = registered_fb[idx];
3480 ops = info->fbcon_par;
3481
3482 if (!ops)
3483 goto err;
3484
3485 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3486err:
ac751efa 3487 console_unlock();
acba9cd0
AD		 3488 return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3489}
3490
0c6c1ce0
AD		 3491static ssize_t store_cursor_blink(struct device *device,
3492 struct device_attribute *attr,
acba9cd0
AD		 3493 const char *buf, size_t count)
3494{
3495 struct fb_info *info;
3496 int blink, idx;
3497 char **last = NULL;
3498
3499 if (fbcon_has_exited)
3500 return count;
3501
ac751efa 3502 console_lock();
acba9cd0
AD		 3503 idx = con2fb_map[fg_console];
3504
3505 if (idx == -1 || registered_fb[idx] == NULL)
3506 goto err;
3507
3508 info = registered_fb[idx];
3509
3510 if (!info->fbcon_par)
3511 goto err;
3512
3513 blink = simple_strtoul(buf, last, 0);
3514
3515 if (blink) {
3516 fbcon_cursor_noblink = 0;
3517 fbcon_add_cursor_timer(info);
3518 } else {
3519 fbcon_cursor_noblink = 1;
3520 fbcon_del_cursor_timer(info);
3521 }
3522
3523err:
ac751efa 3524 console_unlock();
acba9cd0
AD		 3525 return count;
3526}
3527
0c6c1ce0 3528static struct device_attribute device_attrs[] = {
9a179176
AD		 3529 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3530 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
acba9cd0
AD		 3531 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3532 store_cursor_blink),
9a179176
AD		 3533};
3534
0c6c1ce0 3535static int fbcon_init_device(void)
9a179176 3536{
0a727dea
AD		 3537 int i, error = 0;
3538
3539 fbcon_has_sysfs = 1;
3540
0c6c1ce0
AD		 3541 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
3542 error = device_create_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3543
3544 if (error)
3545 break;
3546 }
3547
3548 if (error) {
3549 while (--i >= 0)
0c6c1ce0 3550 device_remove_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3551
3552 fbcon_has_sysfs = 0;
3553 }
9a179176 3554
9a179176
AD		 3555 return 0;
3556}
3557
5428b044 3558static void fbcon_start(void)
1da177e4 3559{
5428b044
AD		 3560 if (num_registered_fb) {
3561 int i;
9a179176 3562
ac751efa 3563 console_lock();
1da177e4 3564
1da177e4
LT		 3565 for (i = 0; i < FB_MAX; i++) {
3566 if (registered_fb[i] != NULL) {
3567 info_idx = i;
3568 break;
3569 }
3570 }
5428b044 3571
e57f35d4 3572 do_fbcon_takeover(0);
ac751efa 3573 console_unlock();
e57f35d4 3574
1da177e4 3575 }
9a179176
AD		 3576}
3577
5428b044 3578static void fbcon_exit(void)
9a179176 3579{
e55186fe
AD		 3580 struct fb_info *info;
3581 int i, j, mapped;
3582
e614b18d
AD		 3583 if (fbcon_has_exited)
3584 return;
3585
e55186fe 3586 kfree((void *)softback_buf);
5428b044 3587 softback_buf = 0UL;
e55186fe
AD		 3588
3589 for (i = 0; i < FB_MAX; i++) {
142092e5 3590 int pending = 0;
beaa4867 3591
e55186fe
AD		 3592 mapped = 0;
3593 info = registered_fb[i];
3594
3595 if (info == NULL)
3596 continue;
3597
142092e5
JP		 3598 if (info->queue.func)
3599 pending = cancel_work_sync(&info->queue);
beaa4867
GL		 3600 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" :
3601 "no"));
3602
e614b18d 3603 for (j = first_fb_vc; j <= last_fb_vc; j++) {
5aa133d6 3604 if (con2fb_map[j] == i) {
e55186fe 3605 mapped = 1;
5aa133d6
WY		 3606 break;
3607 }
e55186fe
AD		 3608 }
3609
3610 if (mapped) {
3611 if (info->fbops->fb_release)
3612 info->fbops->fb_release(info, 0);
3613 module_put(info->fbops->owner);
5428b044
AD		 3614
3615 if (info->fbcon_par) {
e299dd4d
DJ		 3616 struct fbcon_ops *ops = info->fbcon_par;
3617
5428b044 3618 fbcon_del_cursor_timer(info);
e299dd4d 3619 kfree(ops->cursor_src);
46862145 3620 kfree(ops->cursor_state.mask);
5428b044
AD		 3621 kfree(info->fbcon_par);
3622 info->fbcon_par = NULL;
3623 }
3624
3625 if (info->queue.func == fb_flashcursor)
3626 info->queue.func = NULL;
e55186fe
AD		 3627 }
3628 }
3629
e614b18d 3630 fbcon_has_exited = 1;
5428b044
AD		 3631}
3632
6104c370 3633void __init fb_console_init(void)
5428b044
AD		 3634{
3635 int i;
3636
ac751efa 3637 console_lock();
5428b044 3638 fb_register_client(&fbcon_event_notifier);
77997aaa
GKH		 3639 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
3640 "fbcon");
5428b044 3641
0c6c1ce0
AD		 3642 if (IS_ERR(fbcon_device)) {
3643 printk(KERN_WARNING "Unable to create device "
5428b044 3644 "for fbcon; errno = %ld\n",
0c6c1ce0
AD		 3645 PTR_ERR(fbcon_device));
3646 fbcon_device = NULL;
5428b044 3647 } else
0c6c1ce0 3648 fbcon_init_device();
5428b044
AD		 3649
3650 for (i = 0; i < MAX_NR_CONSOLES; i++)
3651 con2fb_map[i] = -1;
3652
ac751efa 3653 console_unlock();
5428b044 3654 fbcon_start();
5428b044
AD		 3655}
3656
5428b044
AD		 3657#ifdef MODULE
3658
0c6c1ce0 3659static void __exit fbcon_deinit_device(void)
5428b044
AD		 3660{
3661 int i;
3662
0a727dea 3663 if (fbcon_has_sysfs) {
0c6c1ce0
AD		 3664 for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
3665 device_remove_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3666
3667 fbcon_has_sysfs = 0;
3668 }
9a179176
AD		 3669}
3670
6104c370 3671void __exit fb_console_exit(void)
1da177e4 3672{
ac751efa 3673 console_lock();
1da177e4 3674 fb_unregister_client(&fbcon_event_notifier);
0c6c1ce0
AD		 3675 fbcon_deinit_device();
3676 device_destroy(fb_class, MKDEV(0, 0));
e614b18d 3677 fbcon_exit();
70125e76 3678 do_unregister_con_driver(&fb_con);
ac751efa 3679 console_unlock();
1da177e4 3680}
1da177e4 3681#endif
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