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Merge branch 'drm-next-3.10-2' of git://people.freedesktop.org/~agd5f/linux into...
[mirror_ubuntu-bionic-kernel.git] / drivers / video / console / fbcon.c
CommitLineData
1da177e4
LT		 1/*
2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver
3 *
4 * Copyright (C) 1995 Geert Uytterhoeven
5 *
6 *
7 * This file is based on the original Amiga console driver (amicon.c):
8 *
9 * Copyright (C) 1993 Hamish Macdonald
10 * Greg Harp
11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
12 *
13 * with work by William Rucklidge (wjr@cs.cornell.edu)
14 * Geert Uytterhoeven
15 * Jes Sorensen (jds@kom.auc.dk)
16 * Martin Apel
17 *
18 * and on the original Atari console driver (atacon.c):
19 *
20 * Copyright (C) 1993 Bjoern Brauel
21 * Roman Hodek
22 *
23 * with work by Guenther Kelleter
24 * Martin Schaller
25 * Andreas Schwab
26 *
27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org)
28 * Smart redraw scrolling, arbitrary font width support, 512char font support
29 * and software scrollback added by
30 * Jakub Jelinek (jj@ultra.linux.cz)
31 *
32 * Random hacking by Martin Mares <mj@ucw.cz>
33 *
34 * 2001 - Documented with DocBook
35 * - Brad Douglas <brad@neruo.com>
36 *
37 * The low level operations for the various display memory organizations are
38 * now in separate source files.
39 *
40 * Currently the following organizations are supported:
41 *
42 * o afb Amiga bitplanes
43 * o cfb{2,4,8,16,24,32} Packed pixels
44 * o ilbm Amiga interleaved bitplanes
45 * o iplan2p[248] Atari interleaved bitplanes
46 * o mfb Monochrome
47 * o vga VGA characters/attributes
48 *
49 * To do:
50 *
51 * - Implement 16 plane mode (iplan2p16)
52 *
53 *
54 * This file is subject to the terms and conditions of the GNU General Public
55 * License. See the file COPYING in the main directory of this archive for
56 * more details.
57 */
58
59#undef FBCONDEBUG
60
1da177e4
LT		 61#include <linux/module.h>
62#include <linux/types.h>
1da177e4
LT		 63#include <linux/fs.h>
64#include <linux/kernel.h>
65#include <linux/delay.h> /* MSch: for IRQ probe */
1da177e4
LT		 66#include <linux/console.h>
67#include <linux/string.h>
68#include <linux/kd.h>
69#include <linux/slab.h>
70#include <linux/fb.h>
71#include <linux/vt_kern.h>
72#include <linux/selection.h>
73#include <linux/font.h>
74#include <linux/smp.h>
75#include <linux/init.h>
76#include <linux/interrupt.h>
77#include <linux/crc32.h> /* For counting font checksums */
623e71b0 78#include <asm/fb.h>
1da177e4 79#include <asm/irq.h>
1da177e4
LT		 80
81#include "fbcon.h"
82
83#ifdef FBCONDEBUG
5ae12170 84# define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
1da177e4
LT		 85#else
86# define DPRINTK(fmt, args...)
87#endif
88
89enum {
90 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
91 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
92 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */
93};
94
ab767201 95static struct display fb_display[MAX_NR_CONSOLES];
e4fc2761 96
1da177e4
LT		 97static signed char con2fb_map[MAX_NR_CONSOLES];
98static signed char con2fb_map_boot[MAX_NR_CONSOLES];
49a1d28f 99
1da177e4
LT		 100static int logo_lines;
101/* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
102 enums. */
103static int logo_shown = FBCON_LOGO_CANSHOW;
104/* Software scrollback */
105static int fbcon_softback_size = 32768;
106static unsigned long softback_buf, softback_curr;
107static unsigned long softback_in;
108static unsigned long softback_top, softback_end;
109static int softback_lines;
110/* console mappings */
111static int first_fb_vc;
112static int last_fb_vc = MAX_NR_CONSOLES - 1;
113static int fbcon_is_default = 1;
e614b18d 114static int fbcon_has_exited;
623e71b0 115static int primary_device = -1;
2ddce3fd 116static int fbcon_has_console_bind;
4769a9a5
AD		 117
118#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
623e71b0 119static int map_override;
e614b18d 120
4769a9a5
AD		 121static inline void fbcon_map_override(void)
122{
123 map_override = 1;
124}
125#else
126static inline void fbcon_map_override(void)
127{
128}
129#endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */
130
1da177e4
LT		 131/* font data */
132static char fontname[40];
133
134/* current fb_info */
135static int info_idx = -1;
136
e4fc2761 137/* console rotation */
2428e59b 138static int initial_rotation;
0a727dea 139static int fbcon_has_sysfs;
e4fc2761 140
1da177e4
LT		 141static const struct consw fb_con;
142
143#define CM_SOFTBACK (8)
144
145#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
146
1da177e4
LT		 147static int fbcon_set_origin(struct vc_data *);
148
149#define CURSOR_DRAW_DELAY (1)
150
1da177e4 151static int vbl_cursor_cnt;
acba9cd0 152static int fbcon_cursor_noblink;
1da177e4
LT		 153
154#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
155
156/*
157 * Interface used by the world
158 */
159
160static const char *fbcon_startup(void);
161static void fbcon_init(struct vc_data *vc, int init);
162static void fbcon_deinit(struct vc_data *vc);
163static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
164 int width);
165static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
166static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
167 int count, int ypos, int xpos);
168static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
169static void fbcon_cursor(struct vc_data *vc, int mode);
170static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
171 int count);
172static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
173 int height, int width);
174static int fbcon_switch(struct vc_data *vc);
175static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
176static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
177static int fbcon_scrolldelta(struct vc_data *vc, int lines);
178
179/*
180 * Internal routines
181 */
1da177e4
LT		 182static __inline__ void ywrap_up(struct vc_data *vc, int count);
183static __inline__ void ywrap_down(struct vc_data *vc, int count);
184static __inline__ void ypan_up(struct vc_data *vc, int count);
185static __inline__ void ypan_down(struct vc_data *vc, int count);
186static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
187 int dy, int dx, int height, int width, u_int y_break);
188static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
d1baa4ff 189 int unit);
1da177e4
LT		 190static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
191 int line, int count, int dy);
a812c94b
AD		 192static void fbcon_modechanged(struct fb_info *info);
193static void fbcon_set_all_vcs(struct fb_info *info);
5428b044
AD		 194static void fbcon_start(void);
195static void fbcon_exit(void);
0c6c1ce0 196static struct device *fbcon_device;
9a179176 197
dbcbfe1e 198#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
b73deed3 199static inline void fbcon_set_rotation(struct fb_info *info)
dbcbfe1e
AD		 200{
201 struct fbcon_ops *ops = info->fbcon_par;
202
203 if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
b73deed3
AD		 204 ops->p->con_rotate < 4)
205 ops->rotate = ops->p->con_rotate;
dbcbfe1e
AD		 206 else
207 ops->rotate = 0;
208}
a812c94b
AD		 209
210static void fbcon_rotate(struct fb_info *info, u32 rotate)
211{
212 struct fbcon_ops *ops= info->fbcon_par;
213 struct fb_info *fb_info;
214
215 if (!ops || ops->currcon == -1)
216 return;
217
218 fb_info = registered_fb[con2fb_map[ops->currcon]];
219
220 if (info == fb_info) {
221 struct display *p = &fb_display[ops->currcon];
222
223 if (rotate < 4)
224 p->con_rotate = rotate;
225 else
226 p->con_rotate = 0;
227
228 fbcon_modechanged(info);
229 }
230}
231
232static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
233{
234 struct fbcon_ops *ops = info->fbcon_par;
235 struct vc_data *vc;
236 struct display *p;
237 int i;
238
239 if (!ops || ops->currcon < 0 || rotate > 3)
240 return;
241
e614b18d 242 for (i = first_fb_vc; i <= last_fb_vc; i++) {
a812c94b
AD		 243 vc = vc_cons[i].d;
244 if (!vc || vc->vc_mode != KD_TEXT ||
245 registered_fb[con2fb_map[i]] != info)
246 continue;
247
248 p = &fb_display[vc->vc_num];
249 p->con_rotate = rotate;
250 }
251
252 fbcon_set_all_vcs(info);
253}
dbcbfe1e 254#else
b73deed3 255static inline void fbcon_set_rotation(struct fb_info *info)
e4fc2761
AD		 256{
257 struct fbcon_ops *ops = info->fbcon_par;
258
259 ops->rotate = FB_ROTATE_UR;
260}
a812c94b
AD		 261
262static void fbcon_rotate(struct fb_info *info, u32 rotate)
263{
264 return;
265}
266
267static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
268{
269 return;
270}
dbcbfe1e 271#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
e4fc2761 272
a812c94b
AD		 273static int fbcon_get_rotate(struct fb_info *info)
274{
275 struct fbcon_ops *ops = info->fbcon_par;
276
277 return (ops) ? ops->rotate : 0;
278}
279
1da177e4
LT		 280static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
281{
282 struct fbcon_ops *ops = info->fbcon_par;
283
284 return (info->state != FBINFO_STATE_RUNNING ||
8fd4bd22
JB		 285 vc->vc_mode != KD_TEXT || ops->graphics) &&
286 !vt_force_oops_output(vc);
1da177e4
LT		 287}
288
da909ce4 289static int get_color(struct vc_data *vc, struct fb_info *info,
1da177e4
LT		 290 u16 c, int is_fg)
291{
b8c90945 292 int depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 293 int color = 0;
294
295 if (console_blanked) {
296 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
297
298 c = vc->vc_video_erase_char & charmask;
299 }
300
301 if (depth != 1)
302 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
303 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
304
305 switch (depth) {
306 case 1:
307 {
91c43132 308 int col = mono_col(info);
1da177e4 309 /* 0 or 1 */
b8c90945
AD		 310 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
311 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
1da177e4
LT		 312
313 if (console_blanked)
314 fg = bg;
315
316 color = (is_fg) ? fg : bg;
317 break;
318 }
319 case 2:
320 /*
321 * Scale down 16-colors to 4 colors. Default 4-color palette
2cc38ed1
AD		 322 * is grayscale. However, simply dividing the values by 4
323 * will not work, as colors 1, 2 and 3 will be scaled-down
324 * to zero rendering them invisible. So empirically convert
325 * colors to a sane 4-level grayscale.
1da177e4 326 */
2cc38ed1
AD		 327 switch (color) {
328 case 0:
329 color = 0; /* black */
330 break;
331 case 1 ... 6:
332 color = 2; /* white */
333 break;
334 case 7 ... 8:
335 color = 1; /* gray */
336 break;
337 default:
338 color = 3; /* intense white */
339 break;
340 }
341 break;
1da177e4
LT		 342 case 3:
343 /*
344 * Last 8 entries of default 16-color palette is a more intense
345 * version of the first 8 (i.e., same chrominance, different
346 * luminance).
347 */
348 color &= 7;
349 break;
350 }
351
352
353 return color;
354}
355
4d9c5b6e
AD		 356static void fbcon_update_softback(struct vc_data *vc)
357{
358 int l = fbcon_softback_size / vc->vc_size_row;
359
360 if (l > 5)
361 softback_end = softback_buf + l * vc->vc_size_row;
362 else
363 /* Smaller scrollback makes no sense, and 0 would screw
364 the operation totally */
365 softback_top = 0;
366}
367
c4028958 368static void fb_flashcursor(struct work_struct *work)
1da177e4 369{
c4028958 370 struct fb_info *info = container_of(work, struct fb_info, queue);
1da177e4 371 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 372 struct vc_data *vc = NULL;
373 int c;
374 int mode;
d8636a27
DA		 375 int ret;
376
377 /* FIXME: we should sort out the unbind locking instead */
378 /* instead we just fail to flash the cursor if we can't get
379 * the lock instead of blocking fbcon deinit */
380 ret = console_trylock();
381 if (ret == 0)
382 return;
1da177e4 383
5428b044 384 if (ops && ops->currcon != -1)
1da177e4
LT		 385 vc = vc_cons[ops->currcon].d;
386
387 if (!vc || !CON_IS_VISIBLE(vc) ||
dbd4f128 388 registered_fb[con2fb_map[vc->vc_num]] != info ||
212f2639 389 vc->vc_deccm != 1) {
ac751efa 390 console_unlock();
1da177e4 391 return;
5428b044
AD		 392 }
393
1da177e4
LT		 394 c = scr_readw((u16 *) vc->vc_pos);
395 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
396 CM_ERASE : CM_DRAW;
b73deed3 397 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
1da177e4 398 get_color(vc, info, c, 0));
ac751efa 399 console_unlock();
1da177e4
LT		 400}
401
1da177e4
LT		 402static void cursor_timer_handler(unsigned long dev_addr)
403{
404 struct fb_info *info = (struct fb_info *) dev_addr;
405 struct fbcon_ops *ops = info->fbcon_par;
406
407 schedule_work(&info->queue);
408 mod_timer(&ops->cursor_timer, jiffies + HZ/5);
409}
410
88fb2c6e
AD		 411static void fbcon_add_cursor_timer(struct fb_info *info)
412{
413 struct fbcon_ops *ops = info->fbcon_par;
414
415 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
acba9cd0
AD		 416 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
417 !fbcon_cursor_noblink) {
88fb2c6e 418 if (!info->queue.func)
c4028958 419 INIT_WORK(&info->queue, fb_flashcursor);
88fb2c6e
AD		 420
421 init_timer(&ops->cursor_timer);
422 ops->cursor_timer.function = cursor_timer_handler;
423 ops->cursor_timer.expires = jiffies + HZ / 5;
424 ops->cursor_timer.data = (unsigned long ) info;
425 add_timer(&ops->cursor_timer);
426 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
427 }
428}
429
430static void fbcon_del_cursor_timer(struct fb_info *info)
431{
432 struct fbcon_ops *ops = info->fbcon_par;
433
434 if (info->queue.func == fb_flashcursor &&
435 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
436 del_timer_sync(&ops->cursor_timer);
437 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
438 }
439}
440
1da177e4
LT		 441#ifndef MODULE
442static int __init fb_console_setup(char *this_opt)
443{
444 char *options;
445 int i, j;
446
447 if (!this_opt || !*this_opt)
9b41046c 448 return 1;
1da177e4
LT		 449
450 while ((options = strsep(&this_opt, ",")) != NULL) {
451 if (!strncmp(options, "font:", 5))
e432964a 452 strlcpy(fontname, options + 5, sizeof(fontname));
1da177e4
LT		 453
454 if (!strncmp(options, "scrollback:", 11)) {
455 options += 11;
456 if (*options) {
457 fbcon_softback_size = simple_strtoul(options, &options, 0);
458 if (*options == 'k' || *options == 'K') {
459 fbcon_softback_size *= 1024;
460 options++;
461 }
462 if (*options != ',')
9b41046c 463 return 1;
1da177e4
LT		 464 options++;
465 } else
9b41046c 466 return 1;
1da177e4
LT		 467 }
468
469 if (!strncmp(options, "map:", 4)) {
470 options += 4;
623e71b0 471 if (*options) {
1da177e4
LT		 472 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
473 if (!options[j])
474 j = 0;
475 con2fb_map_boot[i] =
476 (options[j++]-'0') % FB_MAX;
477 }
623e71b0 478
4769a9a5 479 fbcon_map_override();
623e71b0
AD		 480 }
481
9b41046c 482 return 1;
1da177e4
LT		 483 }
484
485 if (!strncmp(options, "vc:", 3)) {
486 options += 3;
487 if (*options)
488 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
489 if (first_fb_vc < 0)
490 first_fb_vc = 0;
491 if (*options++ == '-')
492 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
493 fbcon_is_default = 0;
494 }
e4fc2761
AD		 495
496 if (!strncmp(options, "rotate:", 7)) {
497 options += 7;
498 if (*options)
2428e59b
MS		 499 initial_rotation = simple_strtoul(options, &options, 0);
500 if (initial_rotation > 3)
501 initial_rotation = 0;
e4fc2761 502 }
1da177e4 503 }
9b41046c 504 return 1;
1da177e4
LT		 505}
506
507__setup("fbcon=", fb_console_setup);
508#endif
509
510static int search_fb_in_map(int idx)
511{
512 int i, retval = 0;
513
e614b18d 514 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 515 if (con2fb_map[i] == idx)
516 retval = 1;
517 }
518 return retval;
519}
520
521static int search_for_mapped_con(void)
522{
523 int i, retval = 0;
524
e614b18d 525 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 526 if (con2fb_map[i] != -1)
527 retval = 1;
528 }
529 return retval;
530}
531
50e244cc
AC		 532static int do_fbcon_takeover(int show_logo)
533{
534 int err, i;
535
536 if (!num_registered_fb)
537 return -ENODEV;
538
539 if (!show_logo)
540 logo_shown = FBCON_LOGO_DONTSHOW;
541
542 for (i = first_fb_vc; i <= last_fb_vc; i++)
543 con2fb_map[i] = info_idx;
544
545 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc,
546 fbcon_is_default);
547
548 if (err) {
549 for (i = first_fb_vc; i <= last_fb_vc; i++)
550 con2fb_map[i] = -1;
551 info_idx = -1;
552 } else {
553 fbcon_has_console_bind = 1;
554 }
555
556 return err;
557}
558
1da177e4
LT		 559static int fbcon_takeover(int show_logo)
560{
561 int err, i;
562
563 if (!num_registered_fb)
564 return -ENODEV;
565
566 if (!show_logo)
567 logo_shown = FBCON_LOGO_DONTSHOW;
568
569 for (i = first_fb_vc; i <= last_fb_vc; i++)
570 con2fb_map[i] = info_idx;
571
572 err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
573 fbcon_is_default);
e614b18d 574
1da177e4
LT		 575 if (err) {
576 for (i = first_fb_vc; i <= last_fb_vc; i++) {
577 con2fb_map[i] = -1;
578 }
579 info_idx = -1;
2ddce3fd
IA		 580 } else {
581 fbcon_has_console_bind = 1;
1da177e4
LT		 582 }
583
584 return err;
585}
586
70802c60
AD		 587#ifdef MODULE
588static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
589 int cols, int rows, int new_cols, int new_rows)
590{
591 logo_shown = FBCON_LOGO_DONTSHOW;
592}
593#else
1da177e4
LT		 594static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
595 int cols, int rows, int new_cols, int new_rows)
596{
597 /* Need to make room for the logo */
9c44e5f6 598 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 599 int cnt, erase = vc->vc_video_erase_char, step;
600 unsigned short *save = NULL, *r, *q;
49a1d28f 601 int logo_height;
1da177e4 602
70802c60
AD		 603 if (info->flags & FBINFO_MODULE) {
604 logo_shown = FBCON_LOGO_DONTSHOW;
605 return;
606 }
607
1da177e4
LT		 608 /*
609 * remove underline attribute from erase character
610 * if black and white framebuffer.
611 */
b8c90945 612 if (fb_get_color_depth(&info->var, &info->fix) == 1)
1da177e4 613 erase &= ~0x400;
9c44e5f6 614 logo_height = fb_prepare_logo(info, ops->rotate);
416e74ea 615 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);
1da177e4
LT		 616 q = (unsigned short *) (vc->vc_origin +
617 vc->vc_size_row * rows);
618 step = logo_lines * cols;
619 for (r = q - logo_lines * cols; r < q; r++)
620 if (scr_readw(r) != vc->vc_video_erase_char)
621 break;
622 if (r != q && new_rows >= rows + logo_lines) {
623 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
624 if (save) {
625 int i = cols < new_cols ? cols : new_cols;
626 scr_memsetw(save, erase, logo_lines * new_cols * 2);
627 r = q - step;
628 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
629 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
630 r = q;
631 }
632 }
633 if (r == q) {
634 /* We can scroll screen down */
635 r = q - step - cols;
636 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
637 scr_memcpyw(r + step, r, vc->vc_size_row);
638 r -= cols;
639 }
640 if (!save) {
250038f5
GU		 641 int lines;
642 if (vc->vc_y + logo_lines >= rows)
643 lines = rows - vc->vc_y - 1;
644 else
645 lines = logo_lines;
646 vc->vc_y += lines;
647 vc->vc_pos += lines * vc->vc_size_row;
1da177e4
LT		 648 }
649 }
650 scr_memsetw((unsigned short *) vc->vc_origin,
651 erase,
652 vc->vc_size_row * logo_lines);
653
654 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
655 fbcon_clear_margins(vc, 0);
656 update_screen(vc);
657 }
658
659 if (save) {
660 q = (unsigned short *) (vc->vc_origin +
661 vc->vc_size_row *
662 rows);
663 scr_memcpyw(q, save, logo_lines * new_cols * 2);
664 vc->vc_y += logo_lines;
665 vc->vc_pos += logo_lines * vc->vc_size_row;
666 kfree(save);
667 }
668
669 if (logo_lines > vc->vc_bottom) {
670 logo_shown = FBCON_LOGO_CANSHOW;
671 printk(KERN_INFO
672 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
673 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
674 logo_shown = FBCON_LOGO_DRAW;
675 vc->vc_top = logo_lines;
676 }
677}
70802c60 678#endif /* MODULE */
1da177e4
LT		 679
680#ifdef CONFIG_FB_TILEBLITTING
b73deed3 681static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 682{
683 struct fbcon_ops *ops = info->fbcon_par;
684
b73deed3 685 ops->p = &fb_display[vc->vc_num];
ab767201 686
1da177e4 687 if ((info->flags & FBINFO_MISC_TILEBLITTING))
b73deed3 688 fbcon_set_tileops(vc, info);
e4fc2761 689 else {
b73deed3 690 fbcon_set_rotation(info);
1da177e4 691 fbcon_set_bitops(ops);
e4fc2761 692 }
1da177e4 693}
38b4982c
AD		 694
695static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
696{
697 int err = 0;
698
699 if (info->flags & FBINFO_MISC_TILEBLITTING &&
700 info->tileops->fb_get_tilemax(info) < charcount)
701 err = 1;
702
703 return err;
704}
1da177e4 705#else
b73deed3 706static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 707{
708 struct fbcon_ops *ops = info->fbcon_par;
709
710 info->flags &= ~FBINFO_MISC_TILEBLITTING;
b73deed3
AD		 711 ops->p = &fb_display[vc->vc_num];
712 fbcon_set_rotation(info);
1da177e4
LT		 713 fbcon_set_bitops(ops);
714}
38b4982c
AD		 715
716static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
717{
718 return 0;
719}
720
1da177e4
LT		 721#endif /* CONFIG_MISC_TILEBLITTING */
722
723
724static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
725 int unit, int oldidx)
726{
727 struct fbcon_ops *ops = NULL;
728 int err = 0;
729
730 if (!try_module_get(info->fbops->owner))
731 err = -ENODEV;
732
733 if (!err && info->fbops->fb_open &&
734 info->fbops->fb_open(info, 0))
735 err = -ENODEV;
736
737 if (!err) {
a39bc34e 738 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 739 if (!ops)
740 err = -ENOMEM;
741 }
742
743 if (!err) {
1da177e4 744 info->fbcon_par = ops;
d1baa4ff
AD		 745
746 if (vc)
747 set_blitting_type(vc, info);
1da177e4
LT		 748 }
749
750 if (err) {
751 con2fb_map[unit] = oldidx;
752 module_put(info->fbops->owner);
753 }
754
755 return err;
756}
757
758static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
759 struct fb_info *newinfo, int unit,
760 int oldidx, int found)
761{
762 struct fbcon_ops *ops = oldinfo->fbcon_par;
0fcf6ada 763 int err = 0, ret;
1da177e4
LT		 764
765 if (oldinfo->fbops->fb_release &&
766 oldinfo->fbops->fb_release(oldinfo, 0)) {
767 con2fb_map[unit] = oldidx;
768 if (!found && newinfo->fbops->fb_release)
769 newinfo->fbops->fb_release(newinfo, 0);
770 if (!found)
771 module_put(newinfo->fbops->owner);
772 err = -ENODEV;
773 }
774
775 if (!err) {
88fb2c6e 776 fbcon_del_cursor_timer(oldinfo);
1da177e4
LT		 777 kfree(ops->cursor_state.mask);
778 kfree(ops->cursor_data);
e4fc2761 779 kfree(ops->fontbuffer);
1da177e4
LT		 780 kfree(oldinfo->fbcon_par);
781 oldinfo->fbcon_par = NULL;
782 module_put(oldinfo->fbops->owner);
dd0314f7
AD		 783 /*
784 If oldinfo and newinfo are driving the same hardware,
785 the fb_release() method of oldinfo may attempt to
786 restore the hardware state. This will leave the
787 newinfo in an undefined state. Thus, a call to
788 fb_set_par() may be needed for the newinfo.
789 */
0fcf6ada
FTS		 790 if (newinfo->fbops->fb_set_par) {
791 ret = newinfo->fbops->fb_set_par(newinfo);
792
793 if (ret)
794 printk(KERN_ERR "con2fb_release_oldinfo: "
795 "detected unhandled fb_set_par error, "
796 "error code %d\n", ret);
797 }
1da177e4
LT		 798 }
799
800 return err;
801}
802
1da177e4
LT		 803static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
804 int unit, int show_logo)
805{
806 struct fbcon_ops *ops = info->fbcon_par;
0fcf6ada 807 int ret;
1da177e4
LT		 808
809 ops->currcon = fg_console;
810
0fcf6ada
FTS		 811 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) {
812 ret = info->fbops->fb_set_par(info);
813
814 if (ret)
815 printk(KERN_ERR "con2fb_init_display: detected "
816 "unhandled fb_set_par error, "
817 "error code %d\n", ret);
818 }
1da177e4
LT		 819
820 ops->flags |= FBCON_FLAGS_INIT;
821 ops->graphics = 0;
d1baa4ff 822 fbcon_set_disp(info, &info->var, unit);
1da177e4
LT		 823
824 if (show_logo) {
825 struct vc_data *fg_vc = vc_cons[fg_console].d;
826 struct fb_info *fg_info =
827 registered_fb[con2fb_map[fg_console]];
828
829 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
830 fg_vc->vc_rows, fg_vc->vc_cols,
831 fg_vc->vc_rows);
832 }
833
834 update_screen(vc_cons[fg_console].d);
835}
836
837/**
838 * set_con2fb_map - map console to frame buffer device
839 * @unit: virtual console number to map
840 * @newidx: frame buffer index to map virtual console to
841 * @user: user request
842 *
843 * Maps a virtual console @unit to a frame buffer device
844 * @newidx.
054430e7
DA		 845 *
846 * This should be called with the console lock held.
1da177e4
LT		 847 */
848static int set_con2fb_map(int unit, int newidx, int user)
849{
850 struct vc_data *vc = vc_cons[unit].d;
851 int oldidx = con2fb_map[unit];
852 struct fb_info *info = registered_fb[newidx];
853 struct fb_info *oldinfo = NULL;
854 int found, err = 0;
855
856 if (oldidx == newidx)
857 return 0;
858
32b98bf8 859 if (!info)
e614b18d 860 return -EINVAL;
1da177e4 861
32b98bf8 862 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) {
1da177e4 863 info_idx = newidx;
054430e7 864 return do_fbcon_takeover(0);
1da177e4
LT		 865 }
866
867 if (oldidx != -1)
868 oldinfo = registered_fb[oldidx];
869
870 found = search_fb_in_map(newidx);
871
1da177e4
LT		 872 con2fb_map[unit] = newidx;
873 if (!err && !found)
874 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
875
876
877 /*
878 * If old fb is not mapped to any of the consoles,
879 * fbcon should release it.
880 */
881 if (!err && oldinfo && !search_fb_in_map(oldidx))
882 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
883 found);
884
885 if (!err) {
886 int show_logo = (fg_console == 0 && !user &&
887 logo_shown != FBCON_LOGO_DONTSHOW);
888
889 if (!found)
88fb2c6e 890 fbcon_add_cursor_timer(info);
1da177e4
LT		 891 con2fb_map_boot[unit] = newidx;
892 con2fb_init_display(vc, info, unit, show_logo);
893 }
894
e614b18d
AD		 895 if (!search_fb_in_map(info_idx))
896 info_idx = newidx;
897
1da177e4
LT		 898 return err;
899}
900
901/*
902 * Low Level Operations
903 */
904/* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
905static int var_to_display(struct display *disp,
906 struct fb_var_screeninfo *var,
907 struct fb_info *info)
908{
909 disp->xres_virtual = var->xres_virtual;
910 disp->yres_virtual = var->yres_virtual;
911 disp->bits_per_pixel = var->bits_per_pixel;
912 disp->grayscale = var->grayscale;
913 disp->nonstd = var->nonstd;
914 disp->accel_flags = var->accel_flags;
915 disp->height = var->height;
916 disp->width = var->width;
917 disp->red = var->red;
918 disp->green = var->green;
919 disp->blue = var->blue;
920 disp->transp = var->transp;
921 disp->rotate = var->rotate;
922 disp->mode = fb_match_mode(var, &info->modelist);
923 if (disp->mode == NULL)
924 /* This should not happen */
925 return -EINVAL;
926 return 0;
927}
928
929static void display_to_var(struct fb_var_screeninfo *var,
930 struct display *disp)
931{
932 fb_videomode_to_var(var, disp->mode);
933 var->xres_virtual = disp->xres_virtual;
934 var->yres_virtual = disp->yres_virtual;
935 var->bits_per_pixel = disp->bits_per_pixel;
936 var->grayscale = disp->grayscale;
937 var->nonstd = disp->nonstd;
938 var->accel_flags = disp->accel_flags;
939 var->height = disp->height;
940 var->width = disp->width;
941 var->red = disp->red;
942 var->green = disp->green;
943 var->blue = disp->blue;
944 var->transp = disp->transp;
945 var->rotate = disp->rotate;
946}
947
948static const char *fbcon_startup(void)
949{
950 const char *display_desc = "frame buffer device";
951 struct display *p = &fb_display[fg_console];
952 struct vc_data *vc = vc_cons[fg_console].d;
2f4516db 953 const struct font_desc *font = NULL;
1da177e4
LT		 954 struct module *owner;
955 struct fb_info *info = NULL;
956 struct fbcon_ops *ops;
957 int rows, cols;
1da177e4 958
1da177e4
LT		 959 /*
960 * If num_registered_fb is zero, this is a call for the dummy part.
961 * The frame buffer devices weren't initialized yet.
962 */
963 if (!num_registered_fb || info_idx == -1)
964 return display_desc;
965 /*
966 * Instead of blindly using registered_fb[0], we use info_idx, set by
967 * fb_console_init();
968 */
969 info = registered_fb[info_idx];
970 if (!info)
971 return NULL;
972
973 owner = info->fbops->owner;
974 if (!try_module_get(owner))
975 return NULL;
976 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
977 module_put(owner);
978 return NULL;
979 }
980
a39bc34e 981 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 982 if (!ops) {
983 module_put(owner);
984 return NULL;
985 }
986
1da177e4
LT		 987 ops->currcon = -1;
988 ops->graphics = 1;
e4fc2761 989 ops->cur_rotate = -1;
1da177e4 990 info->fbcon_par = ops;
2428e59b 991 p->con_rotate = initial_rotation;
b73deed3 992 set_blitting_type(vc, info);
1da177e4
LT		 993
994 if (info->fix.type != FB_TYPE_TEXT) {
995 if (fbcon_softback_size) {
996 if (!softback_buf) {
997 softback_buf =
998 (unsigned long)
999 kmalloc(fbcon_softback_size,
1000 GFP_KERNEL);
1001 if (!softback_buf) {
1002 fbcon_softback_size = 0;
1003 softback_top = 0;
1004 }
1005 }
1006 } else {
1007 if (softback_buf) {
1008 kfree((void *) softback_buf);
1009 softback_buf = 0;
1010 softback_top = 0;
1011 }
1012 }
1013 if (softback_buf)
1014 softback_in = softback_top = softback_curr =
1015 softback_buf;
1016 softback_lines = 0;
1017 }
1018
1019 /* Setup default font */
ae128786 1020 if (!p->fontdata && !vc->vc_font.data) {
1da177e4
LT		 1021 if (!fontname[0] || !(font = find_font(fontname)))
1022 font = get_default_font(info->var.xres,
2d2699d9
AD		 1023 info->var.yres,
1024 info->pixmap.blit_x,
1025 info->pixmap.blit_y);
1da177e4
LT		 1026 vc->vc_font.width = font->width;
1027 vc->vc_font.height = font->height;
2f4516db 1028 vc->vc_font.data = (void *)(p->fontdata = font->data);
1da177e4 1029 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
ae128786
DA		 1030 } else {
1031 p->fontdata = vc->vc_font.data;
1da177e4
LT		 1032 }
1033
e4fc2761
AD		 1034 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1035 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1036 cols /= vc->vc_font.width;
1037 rows /= vc->vc_font.height;
1da177e4
LT		 1038 vc_resize(vc, cols, rows);
1039
1040 DPRINTK("mode: %s\n", info->fix.id);
1041 DPRINTK("visual: %d\n", info->fix.visual);
1042 DPRINTK("res: %dx%d-%d\n", info->var.xres,
1043 info->var.yres,
1044 info->var.bits_per_pixel);
1045
88fb2c6e 1046 fbcon_add_cursor_timer(info);
e614b18d 1047 fbcon_has_exited = 0;
1da177e4
LT		 1048 return display_desc;
1049}
1050
1051static void fbcon_init(struct vc_data *vc, int init)
1052{
1053 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1054 struct fbcon_ops *ops;
1055 struct vc_data **default_mode = vc->vc_display_fg;
1056 struct vc_data *svc = *default_mode;
1057 struct display *t, *p = &fb_display[vc->vc_num];
1058 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
0fcf6ada 1059 int cap, ret;
1da177e4
LT		 1060
1061 if (info_idx == -1 || info == NULL)
1062 return;
306958e8
AB		 1063
1064 cap = info->flags;
1065
1da177e4
LT		 1066 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1067 (info->fix.type == FB_TYPE_TEXT))
1068 logo = 0;
1069
1da177e4
LT		 1070 if (var_to_display(p, &info->var, info))
1071 return;
1072
d1baa4ff
AD		 1073 if (!info->fbcon_par)
1074 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
1075
1da177e4
LT		 1076 /* If we are not the first console on this
1077 fb, copy the font from that console */
e614b18d
AD		 1078 t = &fb_display[fg_console];
1079 if (!p->fontdata) {
1080 if (t->fontdata) {
1081 struct vc_data *fvc = vc_cons[fg_console].d;
1082
1083 vc->vc_font.data = (void *)(p->fontdata =
1084 fvc->vc_font.data);
1085 vc->vc_font.width = fvc->vc_font.width;
1086 vc->vc_font.height = fvc->vc_font.height;
1087 p->userfont = t->userfont;
1088
1089 if (p->userfont)
1090 REFCOUNT(p->fontdata)++;
1091 } else {
1092 const struct font_desc *font = NULL;
1093
1094 if (!fontname[0] || !(font = find_font(fontname)))
1095 font = get_default_font(info->var.xres,
2d2699d9
AD		 1096 info->var.yres,
1097 info->pixmap.blit_x,
1098 info->pixmap.blit_y);
e614b18d
AD		 1099 vc->vc_font.width = font->width;
1100 vc->vc_font.height = font->height;
1101 vc->vc_font.data = (void *)(p->fontdata = font->data);
1102 vc->vc_font.charcount = 256; /* FIXME Need to
1103 support more fonts */
1104 }
1da177e4 1105 }
e614b18d 1106
1da177e4
LT		 1107 if (p->userfont)
1108 charcnt = FNTCHARCNT(p->fontdata);
e614b18d 1109
8fd4bd22 1110 vc->vc_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT);
b8c90945 1111 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1112 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1113 if (charcnt == 256) {
1114 vc->vc_hi_font_mask = 0;
1115 } else {
1116 vc->vc_hi_font_mask = 0x100;
1117 if (vc->vc_can_do_color)
1118 vc->vc_complement_mask <<= 1;
1119 }
1120
1121 if (!*svc->vc_uni_pagedir_loc)
1122 con_set_default_unimap(svc);
1123 if (!*vc->vc_uni_pagedir_loc)
1124 con_copy_unimap(vc, svc);
1125
e4fc2761 1126 ops = info->fbcon_par;
2428e59b 1127 p->con_rotate = initial_rotation;
b73deed3 1128 set_blitting_type(vc, info);
e4fc2761 1129
1da177e4
LT		 1130 cols = vc->vc_cols;
1131 rows = vc->vc_rows;
e4fc2761
AD		 1132 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1133 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1134 new_cols /= vc->vc_font.width;
1135 new_rows /= vc->vc_font.height;
1da177e4 1136
1da177e4
LT		 1137 /*
1138 * We must always set the mode. The mode of the previous console
1139 * driver could be in the same resolution but we are using different
1140 * hardware so we have to initialize the hardware.
1141 *
1142 * We need to do it in fbcon_init() to prevent screen corruption.
1143 */
d354d9af 1144 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
1da177e4 1145 if (info->fbops->fb_set_par &&
0fcf6ada
FTS		 1146 !(ops->flags & FBCON_FLAGS_INIT)) {
1147 ret = info->fbops->fb_set_par(info);
1148
1149 if (ret)
1150 printk(KERN_ERR "fbcon_init: detected "
1151 "unhandled fb_set_par error, "
1152 "error code %d\n", ret);
1153 }
1154
1da177e4
LT		 1155 ops->flags |= FBCON_FLAGS_INIT;
1156 }
1157
1158 ops->graphics = 0;
1159
1160 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1161 !(cap & FBINFO_HWACCEL_DISABLED))
1162 p->scrollmode = SCROLL_MOVE;
1163 else /* default to something safe */
1164 p->scrollmode = SCROLL_REDRAW;
1165
1166 /*
1167 * ++guenther: console.c:vc_allocate() relies on initializing
1168 * vc_{cols,rows}, but we must not set those if we are only
1169 * resizing the console.
1170 */
0035fe00 1171 if (init) {
1da177e4
LT		 1172 vc->vc_cols = new_cols;
1173 vc->vc_rows = new_rows;
0035fe00
JW		 1174 } else
1175 vc_resize(vc, new_cols, new_rows);
1da177e4
LT		 1176
1177 if (logo)
1178 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1179
4d9c5b6e
AD		 1180 if (vc == svc && softback_buf)
1181 fbcon_update_softback(vc);
e4fc2761 1182
b73deed3 1183 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 1184 ops->rotate = FB_ROTATE_UR;
b73deed3 1185 set_blitting_type(vc, info);
e4fc2761
AD		 1186 }
1187
1a37d5f5 1188 ops->p = &fb_display[fg_console];
1da177e4
LT		 1189}
1190
ae128786 1191static void fbcon_free_font(struct display *p, bool freefont)
e614b18d 1192{
ae128786 1193 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
e614b18d
AD		 1194 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1195 p->fontdata = NULL;
1196 p->userfont = 0;
1197}
1198
1da177e4
LT		 1199static void fbcon_deinit(struct vc_data *vc)
1200{
1201 struct display *p = &fb_display[vc->vc_num];
e614b18d
AD		 1202 struct fb_info *info;
1203 struct fbcon_ops *ops;
1204 int idx;
ae128786 1205 bool free_font = true;
1da177e4 1206
e614b18d
AD		 1207 idx = con2fb_map[vc->vc_num];
1208
1209 if (idx == -1)
1210 goto finished;
1211
1212 info = registered_fb[idx];
1213
1214 if (!info)
1215 goto finished;
1216
ae128786
DA		 1217 if (info->flags & FBINFO_MISC_FIRMWARE)
1218 free_font = false;
e614b18d
AD		 1219 ops = info->fbcon_par;
1220
1221 if (!ops)
1222 goto finished;
1223
1224 if (CON_IS_VISIBLE(vc))
1225 fbcon_del_cursor_timer(info);
1226
1227 ops->flags &= ~FBCON_FLAGS_INIT;
1228finished:
1229
ae128786
DA		 1230 fbcon_free_font(p, free_font);
1231
e614b18d
AD		 1232 if (!con_is_bound(&fb_con))
1233 fbcon_exit();
1234
1235 return;
1da177e4
LT		 1236}
1237
1238/* ====================================================================== */
1239
1240/* fbcon_XXX routines - interface used by the world
1241 *
1242 * This system is now divided into two levels because of complications
1243 * caused by hardware scrolling. Top level functions:
1244 *
1245 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1246 *
1247 * handles y values in range [0, scr_height-1] that correspond to real
1248 * screen positions. y_wrap shift means that first line of bitmap may be
1249 * anywhere on this display. These functions convert lineoffsets to
1250 * bitmap offsets and deal with the wrap-around case by splitting blits.
1251 *
1252 * fbcon_bmove_physical_8() -- These functions fast implementations
1253 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1254 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1255 *
1256 * WARNING:
1257 *
1258 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1259 * Implies should only really hardware scroll in rows. Only reason for
1260 * restriction is simplicity & efficiency at the moment.
1261 */
1262
1da177e4
LT		 1263static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1264 int width)
1265{
1266 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1267 struct fbcon_ops *ops = info->fbcon_par;
1268
1269 struct display *p = &fb_display[vc->vc_num];
1270 u_int y_break;
1271
1272 if (fbcon_is_inactive(vc, info))
1273 return;
1274
1275 if (!height || !width)
1276 return;
1277
256fc0e5 1278 if (sy < vc->vc_top && vc->vc_top == logo_lines) {
c213ddf3 1279 vc->vc_top = 0;
256fc0e5
KM		 1280 /*
1281 * If the font dimensions are not an integral of the display
1282 * dimensions then the ops->clear below won't end up clearing
1283 * the margins. Call clear_margins here in case the logo
1284 * bitmap stretched into the margin area.
1285 */
1286 fbcon_clear_margins(vc, 0);
1287 }
c213ddf3 1288
1da177e4
LT		 1289 /* Split blits that cross physical y_wrap boundary */
1290
1291 y_break = p->vrows - p->yscroll;
1292 if (sy < y_break && sy + height - 1 >= y_break) {
1293 u_int b = y_break - sy;
1294 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1295 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1296 width);
1297 } else
1298 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1299}
1300
1301static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1302 int count, int ypos, int xpos)
1303{
1304 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1305 struct display *p = &fb_display[vc->vc_num];
1306 struct fbcon_ops *ops = info->fbcon_par;
1307
1308 if (!fbcon_is_inactive(vc, info))
1309 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1310 get_color(vc, info, scr_readw(s), 1),
1311 get_color(vc, info, scr_readw(s), 0));
1312}
1313
1314static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1315{
1316 unsigned short chr;
1317
1318 scr_writew(c, &chr);
1319 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1320}
1321
1322static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1323{
1324 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1325 struct fbcon_ops *ops = info->fbcon_par;
1326
1327 if (!fbcon_is_inactive(vc, info))
1328 ops->clear_margins(vc, info, bottom_only);
1329}
1330
1331static void fbcon_cursor(struct vc_data *vc, int mode)
1332{
1333 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1334 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1335 int y;
1336 int c = scr_readw((u16 *) vc->vc_pos);
1337
d1e23066 1338 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1da177e4
LT		 1339 return;
1340
acba9cd0
AD		 1341 if (vc->vc_cursor_type & 0x10)
1342 fbcon_del_cursor_timer(info);
1343 else
1344 fbcon_add_cursor_timer(info);
1345
1da177e4
LT		 1346 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1347 if (mode & CM_SOFTBACK) {
1348 mode &= ~CM_SOFTBACK;
1349 y = softback_lines;
1350 } else {
1351 if (softback_lines)
1352 fbcon_set_origin(vc);
1353 y = 0;
1354 }
1355
b73deed3 1356 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1da177e4
LT		 1357 get_color(vc, info, c, 0));
1358 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1359}
1360
1361static int scrollback_phys_max = 0;
1362static int scrollback_max = 0;
1363static int scrollback_current = 0;
1364
1da177e4 1365static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
d1baa4ff 1366 int unit)
1da177e4 1367{
d1baa4ff
AD		 1368 struct display *p, *t;
1369 struct vc_data **default_mode, *vc;
1370 struct vc_data *svc;
e4fc2761 1371 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1372 int rows, cols, charcnt = 256;
1373
d1baa4ff
AD		 1374 p = &fb_display[unit];
1375
1da177e4
LT		 1376 if (var_to_display(p, var, info))
1377 return;
d1baa4ff
AD		 1378
1379 vc = vc_cons[unit].d;
1380
1381 if (!vc)
1382 return;
1383
1384 default_mode = vc->vc_display_fg;
1385 svc = *default_mode;
1da177e4 1386 t = &fb_display[svc->vc_num];
d1baa4ff 1387
1da177e4 1388 if (!vc->vc_font.data) {
2f4516db 1389 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1da177e4
LT		 1390 vc->vc_font.width = (*default_mode)->vc_font.width;
1391 vc->vc_font.height = (*default_mode)->vc_font.height;
1392 p->userfont = t->userfont;
1393 if (p->userfont)
1394 REFCOUNT(p->fontdata)++;
1395 }
1396 if (p->userfont)
1397 charcnt = FNTCHARCNT(p->fontdata);
1398
b8c90945
AD		 1399 var->activate = FB_ACTIVATE_NOW;
1400 info->var.activate = var->activate;
e4fc2761
AD		 1401 var->yoffset = info->var.yoffset;
1402 var->xoffset = info->var.xoffset;
b8c90945 1403 fb_set_var(info, var);
e4fc2761 1404 ops->var = info->var;
b8c90945 1405 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1406 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1407 if (charcnt == 256) {
1408 vc->vc_hi_font_mask = 0;
1409 } else {
1410 vc->vc_hi_font_mask = 0x100;
1411 if (vc->vc_can_do_color)
1412 vc->vc_complement_mask <<= 1;
1413 }
1414
1415 if (!*svc->vc_uni_pagedir_loc)
1416 con_set_default_unimap(svc);
1417 if (!*vc->vc_uni_pagedir_loc)
1418 con_copy_unimap(vc, svc);
1419
e4fc2761
AD		 1420 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1421 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1422 cols /= vc->vc_font.width;
1423 rows /= vc->vc_font.height;
1da177e4 1424 vc_resize(vc, cols, rows);
e4fc2761 1425
1da177e4
LT		 1426 if (CON_IS_VISIBLE(vc)) {
1427 update_screen(vc);
4d9c5b6e
AD		 1428 if (softback_buf)
1429 fbcon_update_softback(vc);
1da177e4
LT		 1430 }
1431}
1432
1433static __inline__ void ywrap_up(struct vc_data *vc, int count)
1434{
1435 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1436 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1437 struct display *p = &fb_display[vc->vc_num];
1438
1439 p->yscroll += count;
1440 if (p->yscroll >= p->vrows) /* Deal with wrap */
1441 p->yscroll -= p->vrows;
e4fc2761
AD		 1442 ops->var.xoffset = 0;
1443 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1444 ops->var.vmode |= FB_VMODE_YWRAP;
1445 ops->update_start(info);
1da177e4
LT		 1446 scrollback_max += count;
1447 if (scrollback_max > scrollback_phys_max)
1448 scrollback_max = scrollback_phys_max;
1449 scrollback_current = 0;
1450}
1451
1452static __inline__ void ywrap_down(struct vc_data *vc, int count)
1453{
1454 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1455 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1456 struct display *p = &fb_display[vc->vc_num];
1457
1458 p->yscroll -= count;
1459 if (p->yscroll < 0) /* Deal with wrap */
1460 p->yscroll += p->vrows;
e4fc2761
AD		 1461 ops->var.xoffset = 0;
1462 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1463 ops->var.vmode |= FB_VMODE_YWRAP;
1464 ops->update_start(info);
1da177e4
LT		 1465 scrollback_max -= count;
1466 if (scrollback_max < 0)
1467 scrollback_max = 0;
1468 scrollback_current = 0;
1469}
1470
1471static __inline__ void ypan_up(struct vc_data *vc, int count)
1472{
1473 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1474 struct display *p = &fb_display[vc->vc_num];
1475 struct fbcon_ops *ops = info->fbcon_par;
1476
1477 p->yscroll += count;
1478 if (p->yscroll > p->vrows - vc->vc_rows) {
1479 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1480 0, 0, 0, vc->vc_rows, vc->vc_cols);
1481 p->yscroll -= p->vrows - vc->vc_rows;
1482 }
e4fc2761
AD		 1483
1484 ops->var.xoffset = 0;
1485 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1486 ops->var.vmode &= ~FB_VMODE_YWRAP;
1487 ops->update_start(info);
1da177e4
LT		 1488 fbcon_clear_margins(vc, 1);
1489 scrollback_max += count;
1490 if (scrollback_max > scrollback_phys_max)
1491 scrollback_max = scrollback_phys_max;
1492 scrollback_current = 0;
1493}
1494
1495static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1496{
1497 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1498 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1499 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1500
1501 p->yscroll += count;
a39bc34e 1502
1da177e4
LT		 1503 if (p->yscroll > p->vrows - vc->vc_rows) {
1504 p->yscroll -= p->vrows - vc->vc_rows;
1da177e4 1505 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
a39bc34e 1506 }
e4fc2761
AD		 1507
1508 ops->var.xoffset = 0;
1509 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1510 ops->var.vmode &= ~FB_VMODE_YWRAP;
1511 ops->update_start(info);
1da177e4
LT		 1512 fbcon_clear_margins(vc, 1);
1513 scrollback_max += count;
1514 if (scrollback_max > scrollback_phys_max)
1515 scrollback_max = scrollback_phys_max;
1516 scrollback_current = 0;
1517}
1518
1519static __inline__ void ypan_down(struct vc_data *vc, int count)
1520{
1521 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1522 struct display *p = &fb_display[vc->vc_num];
1523 struct fbcon_ops *ops = info->fbcon_par;
1524
1525 p->yscroll -= count;
1526 if (p->yscroll < 0) {
1527 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1528 0, vc->vc_rows, vc->vc_cols);
1529 p->yscroll += p->vrows - vc->vc_rows;
1530 }
e4fc2761
AD		 1531
1532 ops->var.xoffset = 0;
1533 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1534 ops->var.vmode &= ~FB_VMODE_YWRAP;
1535 ops->update_start(info);
1da177e4
LT		 1536 fbcon_clear_margins(vc, 1);
1537 scrollback_max -= count;
1538 if (scrollback_max < 0)
1539 scrollback_max = 0;
1540 scrollback_current = 0;
1541}
1542
1543static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1544{
1545 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1546 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1547 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1548
1549 p->yscroll -= count;
a39bc34e 1550
1da177e4
LT		 1551 if (p->yscroll < 0) {
1552 p->yscroll += p->vrows - vc->vc_rows;
1da177e4 1553 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
a39bc34e 1554 }
e4fc2761
AD		 1555
1556 ops->var.xoffset = 0;
1557 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1558 ops->var.vmode &= ~FB_VMODE_YWRAP;
1559 ops->update_start(info);
1da177e4
LT		 1560 fbcon_clear_margins(vc, 1);
1561 scrollback_max -= count;
1562 if (scrollback_max < 0)
1563 scrollback_max = 0;
1564 scrollback_current = 0;
1565}
1566
1567static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1568 long delta)
1569{
1570 int count = vc->vc_rows;
1571 unsigned short *d, *s;
1572 unsigned long n;
1573 int line = 0;
1574
1575 d = (u16 *) softback_curr;
1576 if (d == (u16 *) softback_in)
1577 d = (u16 *) vc->vc_origin;
1578 n = softback_curr + delta * vc->vc_size_row;
1579 softback_lines -= delta;
1580 if (delta < 0) {
1581 if (softback_curr < softback_top && n < softback_buf) {
1582 n += softback_end - softback_buf;
1583 if (n < softback_top) {
1584 softback_lines -=
1585 (softback_top - n) / vc->vc_size_row;
1586 n = softback_top;
1587 }
1588 } else if (softback_curr >= softback_top
1589 && n < softback_top) {
1590 softback_lines -=
1591 (softback_top - n) / vc->vc_size_row;
1592 n = softback_top;
1593 }
1594 } else {
1595 if (softback_curr > softback_in && n >= softback_end) {
1596 n += softback_buf - softback_end;
1597 if (n > softback_in) {
1598 n = softback_in;
1599 softback_lines = 0;
1600 }
1601 } else if (softback_curr <= softback_in && n > softback_in) {
1602 n = softback_in;
1603 softback_lines = 0;
1604 }
1605 }
1606 if (n == softback_curr)
1607 return;
1608 softback_curr = n;
1609 s = (u16 *) softback_curr;
1610 if (s == (u16 *) softback_in)
1611 s = (u16 *) vc->vc_origin;
1612 while (count--) {
1613 unsigned short *start;
1614 unsigned short *le;
1615 unsigned short c;
1616 int x = 0;
1617 unsigned short attr = 1;
1618
1619 start = s;
1620 le = advance_row(s, 1);
1621 do {
1622 c = scr_readw(s);
1623 if (attr != (c & 0xff00)) {
1624 attr = c & 0xff00;
1625 if (s > start) {
1626 fbcon_putcs(vc, start, s - start,
1627 line, x);
1628 x += s - start;
1629 start = s;
1630 }
1631 }
1632 if (c == scr_readw(d)) {
1633 if (s > start) {
1634 fbcon_putcs(vc, start, s - start,
1635 line, x);
1636 x += s - start + 1;
1637 start = s + 1;
1638 } else {
1639 x++;
1640 start++;
1641 }
1642 }
1643 s++;
1644 d++;
1645 } while (s < le);
1646 if (s > start)
1647 fbcon_putcs(vc, start, s - start, line, x);
1648 line++;
1649 if (d == (u16 *) softback_end)
1650 d = (u16 *) softback_buf;
1651 if (d == (u16 *) softback_in)
1652 d = (u16 *) vc->vc_origin;
1653 if (s == (u16 *) softback_end)
1654 s = (u16 *) softback_buf;
1655 if (s == (u16 *) softback_in)
1656 s = (u16 *) vc->vc_origin;
1657 }
1658}
1659
1660static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1661 int line, int count, int dy)
1662{
1663 unsigned short *s = (unsigned short *)
1664 (vc->vc_origin + vc->vc_size_row * line);
1665
1666 while (count--) {
1667 unsigned short *start = s;
1668 unsigned short *le = advance_row(s, 1);
1669 unsigned short c;
1670 int x = 0;
1671 unsigned short attr = 1;
1672
1673 do {
1674 c = scr_readw(s);
1675 if (attr != (c & 0xff00)) {
1676 attr = c & 0xff00;
1677 if (s > start) {
1678 fbcon_putcs(vc, start, s - start,
1679 dy, x);
1680 x += s - start;
1681 start = s;
1682 }
1683 }
1684 console_conditional_schedule();
1685 s++;
1686 } while (s < le);
1687 if (s > start)
1688 fbcon_putcs(vc, start, s - start, dy, x);
1689 console_conditional_schedule();
1690 dy++;
1691 }
1692}
1693
bad07ff7
KH		 1694static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1695 struct display *p, int line, int count, int ycount)
1696{
1697 int offset = ycount * vc->vc_cols;
1698 unsigned short *d = (unsigned short *)
1699 (vc->vc_origin + vc->vc_size_row * line);
1700 unsigned short *s = d + offset;
1701 struct fbcon_ops *ops = info->fbcon_par;
1702
1703 while (count--) {
1704 unsigned short *start = s;
1705 unsigned short *le = advance_row(s, 1);
1706 unsigned short c;
1707 int x = 0;
1708
1709 do {
1710 c = scr_readw(s);
1711
1712 if (c == scr_readw(d)) {
1713 if (s > start) {
1714 ops->bmove(vc, info, line + ycount, x,
1715 line, x, 1, s-start);
1716 x += s - start + 1;
1717 start = s + 1;
1718 } else {
1719 x++;
1720 start++;
1721 }
1722 }
1723
1724 scr_writew(c, d);
1725 console_conditional_schedule();
1726 s++;
1727 d++;
1728 } while (s < le);
1729 if (s > start)
1730 ops->bmove(vc, info, line + ycount, x, line, x, 1,
1731 s-start);
1732 console_conditional_schedule();
1733 if (ycount > 0)
1734 line++;
1735 else {
1736 line--;
1737 /* NOTE: We subtract two lines from these pointers */
1738 s -= vc->vc_size_row;
1739 d -= vc->vc_size_row;
1740 }
1741 }
1742}
1743
1da177e4
LT		 1744static void fbcon_redraw(struct vc_data *vc, struct display *p,
1745 int line, int count, int offset)
1746{
1747 unsigned short *d = (unsigned short *)
1748 (vc->vc_origin + vc->vc_size_row * line);
1749 unsigned short *s = d + offset;
1750
1751 while (count--) {
1752 unsigned short *start = s;
1753 unsigned short *le = advance_row(s, 1);
1754 unsigned short c;
1755 int x = 0;
1756 unsigned short attr = 1;
1757
1758 do {
1759 c = scr_readw(s);
1760 if (attr != (c & 0xff00)) {
1761 attr = c & 0xff00;
1762 if (s > start) {
1763 fbcon_putcs(vc, start, s - start,
1764 line, x);
1765 x += s - start;
1766 start = s;
1767 }
1768 }
1769 if (c == scr_readw(d)) {
1770 if (s > start) {
1771 fbcon_putcs(vc, start, s - start,
1772 line, x);
1773 x += s - start + 1;
1774 start = s + 1;
1775 } else {
1776 x++;
1777 start++;
1778 }
1779 }
1780 scr_writew(c, d);
1781 console_conditional_schedule();
1782 s++;
1783 d++;
1784 } while (s < le);
1785 if (s > start)
1786 fbcon_putcs(vc, start, s - start, line, x);
1787 console_conditional_schedule();
1788 if (offset > 0)
1789 line++;
1790 else {
1791 line--;
1792 /* NOTE: We subtract two lines from these pointers */
1793 s -= vc->vc_size_row;
1794 d -= vc->vc_size_row;
1795 }
1796 }
1797}
1798
1799static inline void fbcon_softback_note(struct vc_data *vc, int t,
1800 int count)
1801{
1802 unsigned short *p;
1803
1804 if (vc->vc_num != fg_console)
1805 return;
1806 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1807
1808 while (count) {
1809 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1810 count--;
1811 p = advance_row(p, 1);
1812 softback_in += vc->vc_size_row;
1813 if (softback_in == softback_end)
1814 softback_in = softback_buf;
1815 if (softback_in == softback_top) {
1816 softback_top += vc->vc_size_row;
1817 if (softback_top == softback_end)
1818 softback_top = softback_buf;
1819 }
1820 }
1821 softback_curr = softback_in;
1822}
1823
1824static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1825 int count)
1826{
1827 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1828 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1829 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1830
1831 if (fbcon_is_inactive(vc, info))
1832 return -EINVAL;
1833
1834 fbcon_cursor(vc, CM_ERASE);
1835
1836 /*
1837 * ++Geert: Only use ywrap/ypan if the console is in text mode
1838 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1839 * whole screen (prevents flicker).
1840 */
1841
1842 switch (dir) {
1843 case SM_UP:
1844 if (count > vc->vc_rows) /* Maximum realistic size */
1845 count = vc->vc_rows;
1846 if (softback_top)
1847 fbcon_softback_note(vc, t, count);
1848 if (logo_shown >= 0)
1849 goto redraw_up;
1850 switch (p->scrollmode) {
1851 case SCROLL_MOVE:
bad07ff7
KH		 1852 fbcon_redraw_blit(vc, info, p, t, b - t - count,
1853 count);
1854 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1855 scr_memsetw((unsigned short *) (vc->vc_origin +
1856 vc->vc_size_row *
1857 (b - count)),
93f78da4 1858 vc->vc_video_erase_char,
bad07ff7 1859 vc->vc_size_row * count);
93f78da4 1860 return 1;
1da177e4
LT		 1861 break;
1862
1863 case SCROLL_WRAP_MOVE:
1864 if (b - t - count > 3 * vc->vc_rows >> 2) {
1865 if (t > 0)
1866 fbcon_bmove(vc, 0, 0, count, 0, t,
1867 vc->vc_cols);
1868 ywrap_up(vc, count);
1869 if (vc->vc_rows - b > 0)
1870 fbcon_bmove(vc, b - count, 0, b, 0,
1871 vc->vc_rows - b,
1872 vc->vc_cols);
1873 } else if (info->flags & FBINFO_READS_FAST)
1874 fbcon_bmove(vc, t + count, 0, t, 0,
1875 b - t - count, vc->vc_cols);
1876 else
1877 goto redraw_up;
1878 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1879 break;
1880
1881 case SCROLL_PAN_REDRAW:
1882 if ((p->yscroll + count <=
1883 2 * (p->vrows - vc->vc_rows))
1884 && ((!scroll_partial && (b - t == vc->vc_rows))
1885 || (scroll_partial
1886 && (b - t - count >
1887 3 * vc->vc_rows >> 2)))) {
1888 if (t > 0)
1889 fbcon_redraw_move(vc, p, 0, t, count);
1890 ypan_up_redraw(vc, t, count);
1891 if (vc->vc_rows - b > 0)
26e780e8 1892 fbcon_redraw_move(vc, p, b,
1da177e4
LT		 1893 vc->vc_rows - b, b);
1894 } else
1895 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1896 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1897 break;
1898
1899 case SCROLL_PAN_MOVE:
1900 if ((p->yscroll + count <=
1901 2 * (p->vrows - vc->vc_rows))
1902 && ((!scroll_partial && (b - t == vc->vc_rows))
1903 || (scroll_partial
1904 && (b - t - count >
1905 3 * vc->vc_rows >> 2)))) {
1906 if (t > 0)
1907 fbcon_bmove(vc, 0, 0, count, 0, t,
1908 vc->vc_cols);
1909 ypan_up(vc, count);
1910 if (vc->vc_rows - b > 0)
1911 fbcon_bmove(vc, b - count, 0, b, 0,
1912 vc->vc_rows - b,
1913 vc->vc_cols);
1914 } else if (info->flags & FBINFO_READS_FAST)
1915 fbcon_bmove(vc, t + count, 0, t, 0,
1916 b - t - count, vc->vc_cols);
1917 else
1918 goto redraw_up;
1919 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1920 break;
1921
1922 case SCROLL_REDRAW:
1923 redraw_up:
1924 fbcon_redraw(vc, p, t, b - t - count,
1925 count * vc->vc_cols);
1926 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1927 scr_memsetw((unsigned short *) (vc->vc_origin +
1928 vc->vc_size_row *
1929 (b - count)),
93f78da4 1930 vc->vc_video_erase_char,
1da177e4 1931 vc->vc_size_row * count);
93f78da4 1932 return 1;
1da177e4
LT		 1933 }
1934 break;
1935
1936 case SM_DOWN:
1937 if (count > vc->vc_rows) /* Maximum realistic size */
1938 count = vc->vc_rows;
e703ecc3
JB		 1939 if (logo_shown >= 0)
1940 goto redraw_down;
1da177e4
LT		 1941 switch (p->scrollmode) {
1942 case SCROLL_MOVE:
bad07ff7
KH		 1943 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1944 -count);
1945 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1946 scr_memsetw((unsigned short *) (vc->vc_origin +
1947 vc->vc_size_row *
1948 t),
93f78da4 1949 vc->vc_video_erase_char,
bad07ff7 1950 vc->vc_size_row * count);
93f78da4 1951 return 1;
1da177e4
LT		 1952 break;
1953
1954 case SCROLL_WRAP_MOVE:
1955 if (b - t - count > 3 * vc->vc_rows >> 2) {
1956 if (vc->vc_rows - b > 0)
1957 fbcon_bmove(vc, b, 0, b - count, 0,
1958 vc->vc_rows - b,
1959 vc->vc_cols);
1960 ywrap_down(vc, count);
1961 if (t > 0)
1962 fbcon_bmove(vc, count, 0, 0, 0, t,
1963 vc->vc_cols);
1964 } else if (info->flags & FBINFO_READS_FAST)
1965 fbcon_bmove(vc, t, 0, t + count, 0,
1966 b - t - count, vc->vc_cols);
1967 else
1968 goto redraw_down;
1969 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1970 break;
1971
1972 case SCROLL_PAN_MOVE:
1973 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1974 && ((!scroll_partial && (b - t == vc->vc_rows))
1975 || (scroll_partial
1976 && (b - t - count >
1977 3 * vc->vc_rows >> 2)))) {
1978 if (vc->vc_rows - b > 0)
1979 fbcon_bmove(vc, b, 0, b - count, 0,
1980 vc->vc_rows - b,
1981 vc->vc_cols);
1982 ypan_down(vc, count);
1983 if (t > 0)
1984 fbcon_bmove(vc, count, 0, 0, 0, t,
1985 vc->vc_cols);
1986 } else if (info->flags & FBINFO_READS_FAST)
1987 fbcon_bmove(vc, t, 0, t + count, 0,
1988 b - t - count, vc->vc_cols);
1989 else
1990 goto redraw_down;
1991 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1992 break;
1993
1994 case SCROLL_PAN_REDRAW:
1995 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1996 && ((!scroll_partial && (b - t == vc->vc_rows))
1997 || (scroll_partial
1998 && (b - t - count >
1999 3 * vc->vc_rows >> 2)))) {
2000 if (vc->vc_rows - b > 0)
2001 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
2002 b - count);
2003 ypan_down_redraw(vc, t, count);
2004 if (t > 0)
2005 fbcon_redraw_move(vc, p, count, t, 0);
2006 } else
2007 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
2008 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2009 break;
2010
2011 case SCROLL_REDRAW:
2012 redraw_down:
2013 fbcon_redraw(vc, p, b - 1, b - t - count,
2014 -count * vc->vc_cols);
2015 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2016 scr_memsetw((unsigned short *) (vc->vc_origin +
2017 vc->vc_size_row *
2018 t),
93f78da4 2019 vc->vc_video_erase_char,
1da177e4 2020 vc->vc_size_row * count);
93f78da4 2021 return 1;
1da177e4
LT		 2022 }
2023 }
93f78da4 2024 return 0;
1da177e4
LT		 2025}
2026
2027
2028static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
2029 int height, int width)
2030{
2031 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2032 struct display *p = &fb_display[vc->vc_num];
2033
2034 if (fbcon_is_inactive(vc, info))
2035 return;
2036
2037 if (!width || !height)
2038 return;
2039
2040 /* Split blits that cross physical y_wrap case.
2041 * Pathological case involves 4 blits, better to use recursive
2042 * code rather than unrolled case
2043 *
2044 * Recursive invocations don't need to erase the cursor over and
2045 * over again, so we use fbcon_bmove_rec()
2046 */
2047 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2048 p->vrows - p->yscroll);
2049}
2050
2051static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
2052 int dy, int dx, int height, int width, u_int y_break)
2053{
2054 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2055 struct fbcon_ops *ops = info->fbcon_par;
2056 u_int b;
2057
2058 if (sy < y_break && sy + height > y_break) {
2059 b = y_break - sy;
2060 if (dy < sy) { /* Avoid trashing self */
2061 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2062 y_break);
2063 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2064 height - b, width, y_break);
2065 } else {
2066 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2067 height - b, width, y_break);
2068 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2069 y_break);
2070 }
2071 return;
2072 }
2073
2074 if (dy < y_break && dy + height > y_break) {
2075 b = y_break - dy;
2076 if (dy < sy) { /* Avoid trashing self */
2077 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2078 y_break);
2079 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2080 height - b, width, y_break);
2081 } else {
2082 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2083 height - b, width, y_break);
2084 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2085 y_break);
2086 }
2087 return;
2088 }
2089 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2090 height, width);
2091}
2092
def1be2d 2093static void updatescrollmode(struct display *p,
e4fc2761 2094 struct fb_info *info,
1da177e4
LT		 2095 struct vc_data *vc)
2096{
e4fc2761 2097 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2098 int fh = vc->vc_font.height;
2099 int cap = info->flags;
e4fc2761
AD		 2100 u16 t = 0;
2101 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2102 info->fix.xpanstep);
2103 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2104 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2105 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2106 info->var.xres_virtual);
2107 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2108 divides(ypan, vc->vc_font.height) && vyres > yres;
2109 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2110 divides(ywrap, vc->vc_font.height) &&
244ab72d
KP		 2111 divides(vc->vc_font.height, vyres) &&
2112 divides(vc->vc_font.height, yres);
1da177e4 2113 int reading_fast = cap & FBINFO_READS_FAST;
e4fc2761
AD		 2114 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2115 !(cap & FBINFO_HWACCEL_DISABLED);
2116 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2117 !(cap & FBINFO_HWACCEL_DISABLED);
2118
2119 p->vrows = vyres/fh;
2120 if (yres > (fh * (vc->vc_rows + 1)))
2121 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2122 if ((yres % fh) && (vyres % fh < yres % fh))
1da177e4
LT		 2123 p->vrows--;
2124
2125 if (good_wrap || good_pan) {
2126 if (reading_fast || fast_copyarea)
e4fc2761
AD		 2127 p->scrollmode = good_wrap ?
2128 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1da177e4
LT		 2129 else
2130 p->scrollmode = good_wrap ? SCROLL_REDRAW :
2131 SCROLL_PAN_REDRAW;
2132 } else {
2133 if (reading_fast || (fast_copyarea && !fast_imageblit))
2134 p->scrollmode = SCROLL_MOVE;
2135 else
2136 p->scrollmode = SCROLL_REDRAW;
2137 }
2138}
2139
2140static int fbcon_resize(struct vc_data *vc, unsigned int width,
e400b6ec 2141 unsigned int height, unsigned int user)
1da177e4
LT		 2142{
2143 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2144 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2145 struct display *p = &fb_display[vc->vc_num];
2146 struct fb_var_screeninfo var = info->var;
e4fc2761
AD		 2147 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2148
2149 virt_w = FBCON_SWAP(ops->rotate, width, height);
2150 virt_h = FBCON_SWAP(ops->rotate, height, width);
2151 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2152 vc->vc_font.height);
2153 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2154 vc->vc_font.width);
2155 var.xres = virt_w * virt_fw;
2156 var.yres = virt_h * virt_fh;
1da177e4
LT		 2157 x_diff = info->var.xres - var.xres;
2158 y_diff = info->var.yres - var.yres;
e4fc2761
AD		 2159 if (x_diff < 0 || x_diff > virt_fw ||
2160 y_diff < 0 || y_diff > virt_fh) {
9791d763 2161 const struct fb_videomode *mode;
1da177e4
LT		 2162
2163 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2164 mode = fb_find_best_mode(&var, &info->modelist);
2165 if (mode == NULL)
2166 return -EINVAL;
3084a895 2167 display_to_var(&var, p);
1da177e4 2168 fb_videomode_to_var(&var, mode);
3084a895 2169
e4fc2761 2170 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
1da177e4 2171 return -EINVAL;
1da177e4
LT		 2172
2173 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
2174 if (CON_IS_VISIBLE(vc)) {
2175 var.activate = FB_ACTIVATE_NOW |
2176 FB_ACTIVATE_FORCE;
2177 fb_set_var(info, &var);
2178 }
2179 var_to_display(p, &info->var, info);
e4fc2761 2180 ops->var = info->var;
1da177e4
LT		 2181 }
2182 updatescrollmode(p, info, vc);
2183 return 0;
2184}
2185
2186static int fbcon_switch(struct vc_data *vc)
2187{
88fb2c6e 2188 struct fb_info *info, *old_info = NULL;
e4fc2761 2189 struct fbcon_ops *ops;
1da177e4
LT		 2190 struct display *p = &fb_display[vc->vc_num];
2191 struct fb_var_screeninfo var;
0fcf6ada 2192 int i, ret, prev_console, charcnt = 256;
1da177e4
LT		 2193
2194 info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2195 ops = info->fbcon_par;
1da177e4
LT		 2196
2197 if (softback_top) {
1da177e4
LT		 2198 if (softback_lines)
2199 fbcon_set_origin(vc);
2200 softback_top = softback_curr = softback_in = softback_buf;
2201 softback_lines = 0;
4d9c5b6e 2202 fbcon_update_softback(vc);
1da177e4
LT		 2203 }
2204
2205 if (logo_shown >= 0) {
2206 struct vc_data *conp2 = vc_cons[logo_shown].d;
2207
2208 if (conp2->vc_top == logo_lines
2209 && conp2->vc_bottom == conp2->vc_rows)
2210 conp2->vc_top = 0;
2211 logo_shown = FBCON_LOGO_CANSHOW;
2212 }
2213
e4fc2761 2214 prev_console = ops->currcon;
88fb2c6e
AD		 2215 if (prev_console != -1)
2216 old_info = registered_fb[con2fb_map[prev_console]];
1da177e4
LT		 2217 /*
2218 * FIXME: If we have multiple fbdev's loaded, we need to
2219 * update all info->currcon. Perhaps, we can place this
2220 * in a centralized structure, but this might break some
2221 * drivers.
2222 *
2223 * info->currcon = vc->vc_num;
2224 */
2225 for (i = 0; i < FB_MAX; i++) {
2226 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
e4fc2761 2227 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
1da177e4 2228
e4fc2761 2229 o->currcon = vc->vc_num;
1da177e4
LT		 2230 }
2231 }
2232 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2233 display_to_var(&var, p);
2234 var.activate = FB_ACTIVATE_NOW;
2235
2236 /*
2237 * make sure we don't unnecessarily trip the memcmp()
2238 * in fb_set_var()
2239 */
2240 info->var.activate = var.activate;
10732c35 2241 var.vmode |= info->var.vmode & ~FB_VMODE_MASK;
1da177e4 2242 fb_set_var(info, &var);
e4fc2761 2243 ops->var = info->var;
1da177e4 2244
39942fd8
KP		 2245 if (old_info != NULL && (old_info != info ||
2246 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
0fcf6ada
FTS		 2247 if (info->fbops->fb_set_par) {
2248 ret = info->fbops->fb_set_par(info);
2249
2250 if (ret)
2251 printk(KERN_ERR "fbcon_switch: detected "
2252 "unhandled fb_set_par error, "
2253 "error code %d\n", ret);
2254 }
a39bc34e 2255
5428b044 2256 if (old_info != info)
a39bc34e 2257 fbcon_del_cursor_timer(old_info);
88fb2c6e 2258 }
1da177e4 2259
212f2639
AD		 2260 if (fbcon_is_inactive(vc, info) ||
2261 ops->blank_state != FB_BLANK_UNBLANK)
2262 fbcon_del_cursor_timer(info);
2263 else
2264 fbcon_add_cursor_timer(info);
2265
b73deed3 2266 set_blitting_type(vc, info);
e4fc2761
AD		 2267 ops->cursor_reset = 1;
2268
b73deed3 2269 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 2270 ops->rotate = FB_ROTATE_UR;
b73deed3 2271 set_blitting_type(vc, info);
e4fc2761 2272 }
1da177e4 2273
b8c90945 2274 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4 2275 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
56f0d64d
AD		 2276
2277 if (p->userfont)
2278 charcnt = FNTCHARCNT(vc->vc_font.data);
2279
2280 if (charcnt > 256)
2281 vc->vc_complement_mask <<= 1;
2282
1da177e4
LT		 2283 updatescrollmode(p, info, vc);
2284
2285 switch (p->scrollmode) {
2286 case SCROLL_WRAP_MOVE:
2287 scrollback_phys_max = p->vrows - vc->vc_rows;
2288 break;
2289 case SCROLL_PAN_MOVE:
2290 case SCROLL_PAN_REDRAW:
2291 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2292 if (scrollback_phys_max < 0)
2293 scrollback_phys_max = 0;
2294 break;
2295 default:
2296 scrollback_phys_max = 0;
2297 break;
2298 }
e4fc2761 2299
1da177e4
LT		 2300 scrollback_max = 0;
2301 scrollback_current = 0;
4e1567d3
AD		 2302
2303 if (!fbcon_is_inactive(vc, info)) {
2304 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2305 ops->update_start(info);
2306 }
2307
1da177e4
LT		 2308 fbcon_set_palette(vc, color_table);
2309 fbcon_clear_margins(vc, 0);
2310
2311 if (logo_shown == FBCON_LOGO_DRAW) {
2312
2313 logo_shown = fg_console;
2314 /* This is protected above by initmem_freed */
9c44e5f6 2315 fb_show_logo(info, ops->rotate);
1da177e4
LT		 2316 update_region(vc,
2317 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2318 vc->vc_size_row * (vc->vc_bottom -
2319 vc->vc_top) / 2);
2320 return 0;
2321 }
2322 return 1;
2323}
2324
2325static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2326 int blank)
2327{
994efacd
RP		 2328 struct fb_event event;
2329
1da177e4
LT		 2330 if (blank) {
2331 unsigned short charmask = vc->vc_hi_font_mask ?
2332 0x1ff : 0xff;
2333 unsigned short oldc;
2334
2335 oldc = vc->vc_video_erase_char;
2336 vc->vc_video_erase_char &= charmask;
2337 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2338 vc->vc_video_erase_char = oldc;
2339 }
994efacd
RP		 2340
2341
513adb58
AR		 2342 if (!lock_fb_info(info))
2343 return;
994efacd
RP		 2344 event.info = info;
2345 event.data = &blank;
2346 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
513adb58 2347 unlock_fb_info(info);
1da177e4
LT		 2348}
2349
2350static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2351{
2352 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2353 struct fbcon_ops *ops = info->fbcon_par;
2354
2355 if (mode_switch) {
2356 struct fb_var_screeninfo var = info->var;
2357
2358 ops->graphics = 1;
2359
2360 if (!blank) {
2361 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2362 fb_set_var(info, &var);
2363 ops->graphics = 0;
e4fc2761 2364 ops->var = info->var;
f5c15d0b 2365 }
1da177e4
LT		 2366 }
2367
2368 if (!fbcon_is_inactive(vc, info)) {
2369 if (ops->blank_state != blank) {
2370 ops->blank_state = blank;
2371 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2372 ops->cursor_flash = (!blank);
2373
bca404af
DES		 2374 if (!(info->flags & FBINFO_MISC_USEREVENT))
2375 if (fb_blank(info, blank))
2376 fbcon_generic_blank(vc, info, blank);
1da177e4
LT		 2377 }
2378
88fb2c6e
AD		 2379 if (!blank)
2380 update_screen(vc);
2381 }
2382
4d8a2d98 2383 if (mode_switch || fbcon_is_inactive(vc, info) ||
212f2639 2384 ops->blank_state != FB_BLANK_UNBLANK)
88fb2c6e 2385 fbcon_del_cursor_timer(info);
212f2639
AD		 2386 else
2387 fbcon_add_cursor_timer(info);
1da177e4 2388
88fb2c6e 2389 return 0;
1da177e4
LT		 2390}
2391
d219adc1
JB		 2392static int fbcon_debug_enter(struct vc_data *vc)
2393{
2394 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2395 struct fbcon_ops *ops = info->fbcon_par;
2396
2397 ops->save_graphics = ops->graphics;
2398 ops->graphics = 0;
2399 if (info->fbops->fb_debug_enter)
2400 info->fbops->fb_debug_enter(info);
2401 fbcon_set_palette(vc, color_table);
2402 return 0;
2403}
2404
2405static int fbcon_debug_leave(struct vc_data *vc)
2406{
2407 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2408 struct fbcon_ops *ops = info->fbcon_par;
2409
2410 ops->graphics = ops->save_graphics;
2411 if (info->fbops->fb_debug_leave)
2412 info->fbops->fb_debug_leave(info);
2413 return 0;
2414}
2415
1da177e4
LT		 2416static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2417{
2418 u8 *fontdata = vc->vc_font.data;
2419 u8 *data = font->data;
2420 int i, j;
2421
2422 font->width = vc->vc_font.width;
2423 font->height = vc->vc_font.height;
2424 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2425 if (!font->data)
2426 return 0;
2427
2428 if (font->width <= 8) {
2429 j = vc->vc_font.height;
2430 for (i = 0; i < font->charcount; i++) {
2431 memcpy(data, fontdata, j);
2432 memset(data + j, 0, 32 - j);
2433 data += 32;
2434 fontdata += j;
2435 }
2436 } else if (font->width <= 16) {
2437 j = vc->vc_font.height * 2;
2438 for (i = 0; i < font->charcount; i++) {
2439 memcpy(data, fontdata, j);
2440 memset(data + j, 0, 64 - j);
2441 data += 64;
2442 fontdata += j;
2443 }
2444 } else if (font->width <= 24) {
2445 for (i = 0; i < font->charcount; i++) {
2446 for (j = 0; j < vc->vc_font.height; j++) {
2447 *data++ = fontdata[0];
2448 *data++ = fontdata[1];
2449 *data++ = fontdata[2];
2450 fontdata += sizeof(u32);
2451 }
2452 memset(data, 0, 3 * (32 - j));
2453 data += 3 * (32 - j);
2454 }
2455 } else {
2456 j = vc->vc_font.height * 4;
2457 for (i = 0; i < font->charcount; i++) {
2458 memcpy(data, fontdata, j);
2459 memset(data + j, 0, 128 - j);
2460 data += 128;
2461 fontdata += j;
2462 }
2463 }
2464 return 0;
2465}
2466
2467static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2f4516db 2468 const u8 * data, int userfont)
1da177e4
LT		 2469{
2470 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2471 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2472 struct display *p = &fb_display[vc->vc_num];
2473 int resize;
2474 int cnt;
2475 char *old_data = NULL;
2476
2477 if (CON_IS_VISIBLE(vc) && softback_lines)
2478 fbcon_set_origin(vc);
2479
2480 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2481 if (p->userfont)
2482 old_data = vc->vc_font.data;
2483 if (userfont)
2484 cnt = FNTCHARCNT(data);
2485 else
2486 cnt = 256;
2f4516db 2487 vc->vc_font.data = (void *)(p->fontdata = data);
1da177e4
LT		 2488 if ((p->userfont = userfont))
2489 REFCOUNT(data)++;
2490 vc->vc_font.width = w;
2491 vc->vc_font.height = h;
2492 if (vc->vc_hi_font_mask && cnt == 256) {
2493 vc->vc_hi_font_mask = 0;
2494 if (vc->vc_can_do_color) {
2495 vc->vc_complement_mask >>= 1;
2496 vc->vc_s_complement_mask >>= 1;
2497 }
2498
2499 /* ++Edmund: reorder the attribute bits */
2500 if (vc->vc_can_do_color) {
2501 unsigned short *cp =
2502 (unsigned short *) vc->vc_origin;
2503 int count = vc->vc_screenbuf_size / 2;
2504 unsigned short c;
2505 for (; count > 0; count--, cp++) {
2506 c = scr_readw(cp);
2507 scr_writew(((c & 0xfe00) >> 1) |
2508 (c & 0xff), cp);
2509 }
2510 c = vc->vc_video_erase_char;
2511 vc->vc_video_erase_char =
2512 ((c & 0xfe00) >> 1) | (c & 0xff);
2513 vc->vc_attr >>= 1;
2514 }
2515 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2516 vc->vc_hi_font_mask = 0x100;
2517 if (vc->vc_can_do_color) {
2518 vc->vc_complement_mask <<= 1;
2519 vc->vc_s_complement_mask <<= 1;
2520 }
2521
2522 /* ++Edmund: reorder the attribute bits */
2523 {
2524 unsigned short *cp =
2525 (unsigned short *) vc->vc_origin;
2526 int count = vc->vc_screenbuf_size / 2;
2527 unsigned short c;
2528 for (; count > 0; count--, cp++) {
2529 unsigned short newc;
2530 c = scr_readw(cp);
2531 if (vc->vc_can_do_color)
2532 newc =
2533 ((c & 0xff00) << 1) | (c &
2534 0xff);
2535 else
2536 newc = c & ~0x100;
2537 scr_writew(newc, cp);
2538 }
2539 c = vc->vc_video_erase_char;
2540 if (vc->vc_can_do_color) {
2541 vc->vc_video_erase_char =
2542 ((c & 0xff00) << 1) | (c & 0xff);
2543 vc->vc_attr <<= 1;
93f78da4 2544 } else
1da177e4
LT		 2545 vc->vc_video_erase_char = c & ~0x100;
2546 }
2547
2548 }
2549
2550 if (resize) {
e4fc2761
AD		 2551 int cols, rows;
2552
2553 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2554 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2555 cols /= w;
2556 rows /= h;
2557 vc_resize(vc, cols, rows);
4d9c5b6e
AD		 2558 if (CON_IS_VISIBLE(vc) && softback_buf)
2559 fbcon_update_softback(vc);
1da177e4
LT		 2560 } else if (CON_IS_VISIBLE(vc)
2561 && vc->vc_mode == KD_TEXT) {
2562 fbcon_clear_margins(vc, 0);
2563 update_screen(vc);
2564 }
2565
2566 if (old_data && (--REFCOUNT(old_data) == 0))
2567 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2568 return 0;
2569}
2570
2571static int fbcon_copy_font(struct vc_data *vc, int con)
2572{
2573 struct display *od = &fb_display[con];
2574 struct console_font *f = &vc->vc_font;
2575
2576 if (od->fontdata == f->data)
2577 return 0; /* already the same font... */
2578 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2579}
2580
2581/*
2582 * User asked to set font; we are guaranteed that
2583 * a) width and height are in range 1..32
2584 * b) charcount does not exceed 512
2585 * but lets not assume that, since someone might someday want to use larger
2586 * fonts. And charcount of 512 is small for unicode support.
2587 *
2588 * However, user space gives the font in 32 rows , regardless of
2589 * actual font height. So a new API is needed if support for larger fonts
2590 * is ever implemented.
2591 */
2592
2593static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2594{
2d2699d9 2595 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1da177e4
LT		 2596 unsigned charcount = font->charcount;
2597 int w = font->width;
2598 int h = font->height;
2599 int size;
2600 int i, csum;
2601 u8 *new_data, *data = font->data;
2602 int pitch = (font->width+7) >> 3;
2603
2604 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2605 * If not this check should be changed to charcount < 256 */
2606 if (charcount != 256 && charcount != 512)
2607 return -EINVAL;
2608
2d2699d9
AD		 2609 /* Make sure drawing engine can handle the font */
2610 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2611 !(info->pixmap.blit_y & (1 << (font->height - 1))))
2612 return -EINVAL;
38b4982c
AD		 2613
2614 /* Make sure driver can handle the font length */
2615 if (fbcon_invalid_charcount(info, charcount))
2616 return -EINVAL;
2d2699d9 2617
1da177e4
LT		 2618 size = h * pitch * charcount;
2619
2620 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2621
2622 if (!new_data)
2623 return -ENOMEM;
2624
2625 new_data += FONT_EXTRA_WORDS * sizeof(int);
2626 FNTSIZE(new_data) = size;
2627 FNTCHARCNT(new_data) = charcount;
2628 REFCOUNT(new_data) = 0; /* usage counter */
2629 for (i=0; i< charcount; i++) {
2630 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2631 }
2632
2633 /* Since linux has a nice crc32 function use it for counting font
2634 * checksums. */
2635 csum = crc32(0, new_data, size);
2636
2637 FNTSUM(new_data) = csum;
2638 /* Check if the same font is on some other console already */
e614b18d 2639 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 2640 struct vc_data *tmp = vc_cons[i].d;
2641
2642 if (fb_display[i].userfont &&
2643 fb_display[i].fontdata &&
2644 FNTSUM(fb_display[i].fontdata) == csum &&
2645 FNTSIZE(fb_display[i].fontdata) == size &&
2646 tmp->vc_font.width == w &&
2647 !memcmp(fb_display[i].fontdata, new_data, size)) {
2648 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2f4516db 2649 new_data = (u8 *)fb_display[i].fontdata;
1da177e4
LT		 2650 break;
2651 }
2652 }
2653 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2654}
2655
2656static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2657{
2658 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2f4516db 2659 const struct font_desc *f;
1da177e4
LT		 2660
2661 if (!name)
2d2699d9
AD		 2662 f = get_default_font(info->var.xres, info->var.yres,
2663 info->pixmap.blit_x, info->pixmap.blit_y);
1da177e4
LT		 2664 else if (!(f = find_font(name)))
2665 return -ENOENT;
2666
2667 font->width = f->width;
2668 font->height = f->height;
2669 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2670}
2671
2672static u16 palette_red[16];
2673static u16 palette_green[16];
2674static u16 palette_blue[16];
2675
2676static struct fb_cmap palette_cmap = {
2677 0, 16, palette_red, palette_green, palette_blue, NULL
2678};
2679
2680static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2681{
2682 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2683 int i, j, k, depth;
2684 u8 val;
2685
2686 if (fbcon_is_inactive(vc, info))
2687 return -EINVAL;
2688
2689 if (!CON_IS_VISIBLE(vc))
2690 return 0;
2691
b8c90945 2692 depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 2693 if (depth > 3) {
2694 for (i = j = 0; i < 16; i++) {
2695 k = table[i];
2696 val = vc->vc_palette[j++];
2697 palette_red[k] = (val << 8) | val;
2698 val = vc->vc_palette[j++];
2699 palette_green[k] = (val << 8) | val;
2700 val = vc->vc_palette[j++];
2701 palette_blue[k] = (val << 8) | val;
2702 }
2703 palette_cmap.len = 16;
2704 palette_cmap.start = 0;
2705 /*
2706 * If framebuffer is capable of less than 16 colors,
2707 * use default palette of fbcon.
2708 */
2709 } else
2710 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2711
2712 return fb_set_cmap(&palette_cmap, info);
2713}
2714
2715static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2716{
2717 unsigned long p;
2718 int line;
2719
2720 if (vc->vc_num != fg_console || !softback_lines)
2721 return (u16 *) (vc->vc_origin + offset);
2722 line = offset / vc->vc_size_row;
2723 if (line >= softback_lines)
2724 return (u16 *) (vc->vc_origin + offset -
2725 softback_lines * vc->vc_size_row);
2726 p = softback_curr + offset;
2727 if (p >= softback_end)
2728 p += softback_buf - softback_end;
2729 return (u16 *) p;
2730}
2731
2732static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2733 int *px, int *py)
2734{
2735 unsigned long ret;
2736 int x, y;
2737
2738 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2739 unsigned long offset = (pos - vc->vc_origin) / 2;
2740
2741 x = offset % vc->vc_cols;
2742 y = offset / vc->vc_cols;
2743 if (vc->vc_num == fg_console)
2744 y += softback_lines;
2745 ret = pos + (vc->vc_cols - x) * 2;
2746 } else if (vc->vc_num == fg_console && softback_lines) {
2747 unsigned long offset = pos - softback_curr;
2748
2749 if (pos < softback_curr)
2750 offset += softback_end - softback_buf;
2751 offset /= 2;
2752 x = offset % vc->vc_cols;
2753 y = offset / vc->vc_cols;
2754 ret = pos + (vc->vc_cols - x) * 2;
2755 if (ret == softback_end)
2756 ret = softback_buf;
2757 if (ret == softback_in)
2758 ret = vc->vc_origin;
2759 } else {
2760 /* Should not happen */
2761 x = y = 0;
2762 ret = vc->vc_origin;
2763 }
2764 if (px)
2765 *px = x;
2766 if (py)
2767 *py = y;
2768 return ret;
2769}
2770
2771/* As we might be inside of softback, we may work with non-contiguous buffer,
2772 that's why we have to use a separate routine. */
2773static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2774{
2775 while (cnt--) {
2776 u16 a = scr_readw(p);
2777 if (!vc->vc_can_do_color)
2778 a ^= 0x0800;
2779 else if (vc->vc_hi_font_mask == 0x100)
2780 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2781 (((a) & 0x0e00) << 4);
2782 else
2783 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2784 (((a) & 0x0700) << 4);
2785 scr_writew(a, p++);
2786 if (p == (u16 *) softback_end)
2787 p = (u16 *) softback_buf;
2788 if (p == (u16 *) softback_in)
2789 p = (u16 *) vc->vc_origin;
2790 }
2791}
2792
2793static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2794{
2795 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
e4fc2761 2796 struct fbcon_ops *ops = info->fbcon_par;
2c6cc35c 2797 struct display *disp = &fb_display[fg_console];
1da177e4
LT		 2798 int offset, limit, scrollback_old;
2799
2800 if (softback_top) {
2801 if (vc->vc_num != fg_console)
2802 return 0;
2803 if (vc->vc_mode != KD_TEXT || !lines)
2804 return 0;
2805 if (logo_shown >= 0) {
2806 struct vc_data *conp2 = vc_cons[logo_shown].d;
2807
2808 if (conp2->vc_top == logo_lines
2809 && conp2->vc_bottom == conp2->vc_rows)
2810 conp2->vc_top = 0;
2811 if (logo_shown == vc->vc_num) {
2812 unsigned long p, q;
2813 int i;
2814
2815 p = softback_in;
2816 q = vc->vc_origin +
2817 logo_lines * vc->vc_size_row;
2818 for (i = 0; i < logo_lines; i++) {
2819 if (p == softback_top)
2820 break;
2821 if (p == softback_buf)
2822 p = softback_end;
2823 p -= vc->vc_size_row;
2824 q -= vc->vc_size_row;
2825 scr_memcpyw((u16 *) q, (u16 *) p,
2826 vc->vc_size_row);
2827 }
308af929 2828 softback_in = softback_curr = p;
1da177e4
LT		 2829 update_region(vc, vc->vc_origin,
2830 logo_lines * vc->vc_cols);
2831 }
2832 logo_shown = FBCON_LOGO_CANSHOW;
2833 }
2834 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2c6cc35c 2835 fbcon_redraw_softback(vc, disp, lines);
1da177e4
LT		 2836 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2837 return 0;
2838 }
2839
2840 if (!scrollback_phys_max)
2841 return -ENOSYS;
2842
2843 scrollback_old = scrollback_current;
2844 scrollback_current -= lines;
2845 if (scrollback_current < 0)
2846 scrollback_current = 0;
2847 else if (scrollback_current > scrollback_max)
2848 scrollback_current = scrollback_max;
2849 if (scrollback_current == scrollback_old)
2850 return 0;
2851
2852 if (fbcon_is_inactive(vc, info))
2853 return 0;
2854
2855 fbcon_cursor(vc, CM_ERASE);
2856
2c6cc35c
MS		 2857 offset = disp->yscroll - scrollback_current;
2858 limit = disp->vrows;
2859 switch (disp->scrollmode) {
1da177e4
LT		 2860 case SCROLL_WRAP_MOVE:
2861 info->var.vmode |= FB_VMODE_YWRAP;
2862 break;
2863 case SCROLL_PAN_MOVE:
2864 case SCROLL_PAN_REDRAW:
2865 limit -= vc->vc_rows;
2866 info->var.vmode &= ~FB_VMODE_YWRAP;
2867 break;
2868 }
2869 if (offset < 0)
2870 offset += limit;
2871 else if (offset >= limit)
2872 offset -= limit;
e4fc2761
AD		 2873
2874 ops->var.xoffset = 0;
2875 ops->var.yoffset = offset * vc->vc_font.height;
2876 ops->update_start(info);
2877
1da177e4
LT		 2878 if (!scrollback_current)
2879 fbcon_cursor(vc, CM_DRAW);
2880 return 0;
2881}
2882
2883static int fbcon_set_origin(struct vc_data *vc)
2884{
2885 if (softback_lines)
2886 fbcon_scrolldelta(vc, softback_lines);
2887 return 0;
2888}
2889
2890static void fbcon_suspended(struct fb_info *info)
2891{
2892 struct vc_data *vc = NULL;
2893 struct fbcon_ops *ops = info->fbcon_par;
2894
2895 if (!ops || ops->currcon < 0)
2896 return;
2897 vc = vc_cons[ops->currcon].d;
2898
2899 /* Clear cursor, restore saved data */
2900 fbcon_cursor(vc, CM_ERASE);
2901}
2902
2903static void fbcon_resumed(struct fb_info *info)
2904{
2905 struct vc_data *vc;
2906 struct fbcon_ops *ops = info->fbcon_par;
2907
2908 if (!ops || ops->currcon < 0)
2909 return;
2910 vc = vc_cons[ops->currcon].d;
2911
2912 update_screen(vc);
2913}
2914
2915static void fbcon_modechanged(struct fb_info *info)
2916{
2917 struct fbcon_ops *ops = info->fbcon_par;
2918 struct vc_data *vc;
2919 struct display *p;
2920 int rows, cols;
2921
2922 if (!ops || ops->currcon < 0)
2923 return;
2924 vc = vc_cons[ops->currcon].d;
e4fc2761
AD		 2925 if (vc->vc_mode != KD_TEXT ||
2926 registered_fb[con2fb_map[ops->currcon]] != info)
1da177e4
LT		 2927 return;
2928
2929 p = &fb_display[vc->vc_num];
b73deed3 2930 set_blitting_type(vc, info);
1da177e4
LT		 2931
2932 if (CON_IS_VISIBLE(vc)) {
2933 var_to_display(p, &info->var, info);
e4fc2761
AD		 2934 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2935 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2936 cols /= vc->vc_font.width;
2937 rows /= vc->vc_font.height;
1da177e4
LT		 2938 vc_resize(vc, cols, rows);
2939 updatescrollmode(p, info, vc);
2940 scrollback_max = 0;
2941 scrollback_current = 0;
4e1567d3
AD		 2942
2943 if (!fbcon_is_inactive(vc, info)) {
2944 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2945 ops->update_start(info);
2946 }
2947
1da177e4
LT		 2948 fbcon_set_palette(vc, color_table);
2949 update_screen(vc);
4d9c5b6e
AD		 2950 if (softback_buf)
2951 fbcon_update_softback(vc);
1da177e4
LT		 2952 }
2953}
2954
7726e9e1
AD		 2955static void fbcon_set_all_vcs(struct fb_info *info)
2956{
2957 struct fbcon_ops *ops = info->fbcon_par;
2958 struct vc_data *vc;
2959 struct display *p;
95d67bb1 2960 int i, rows, cols, fg = -1;
7726e9e1
AD		 2961
2962 if (!ops || ops->currcon < 0)
2963 return;
2964
e614b18d 2965 for (i = first_fb_vc; i <= last_fb_vc; i++) {
7726e9e1
AD		 2966 vc = vc_cons[i].d;
2967 if (!vc || vc->vc_mode != KD_TEXT ||
2968 registered_fb[con2fb_map[i]] != info)
2969 continue;
2970
95d67bb1
AD		 2971 if (CON_IS_VISIBLE(vc)) {
2972 fg = i;
2973 continue;
2974 }
2975
7726e9e1 2976 p = &fb_display[vc->vc_num];
b73deed3 2977 set_blitting_type(vc, info);
7726e9e1 2978 var_to_display(p, &info->var, info);
232fb69a
ON		 2979 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2980 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
e4fc2761
AD		 2981 cols /= vc->vc_font.width;
2982 rows /= vc->vc_font.height;
7726e9e1 2983 vc_resize(vc, cols, rows);
7726e9e1 2984 }
04a2fe57 2985
95d67bb1
AD		 2986 if (fg != -1)
2987 fbcon_modechanged(info);
7726e9e1
AD		 2988}
2989
1da177e4
LT		 2990static int fbcon_mode_deleted(struct fb_info *info,
2991 struct fb_videomode *mode)
2992{
2993 struct fb_info *fb_info;
2994 struct display *p;
2995 int i, j, found = 0;
2996
2997 /* before deletion, ensure that mode is not in use */
2998 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2999 j = con2fb_map[i];
3000 if (j == -1)
3001 continue;
3002 fb_info = registered_fb[j];
3003 if (fb_info != info)
3004 continue;
3005 p = &fb_display[i];
3006 if (!p || !p->mode)
3007 continue;
3008 if (fb_mode_is_equal(p->mode, mode)) {
3009 found = 1;
3010 break;
3011 }
3012 }
3013 return found;
3014}
3015
cfafca80
JB		 3016#ifdef CONFIG_VT_HW_CONSOLE_BINDING
3017static int fbcon_unbind(void)
3018{
3019 int ret;
3020
e93a9a86 3021 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc,
cfafca80 3022 fbcon_is_default);
2ddce3fd
IA		 3023
3024 if (!ret)
3025 fbcon_has_console_bind = 0;
3026
cfafca80
JB		 3027 return ret;
3028}
3029#else
3030static inline int fbcon_unbind(void)
3031{
3032 return -EINVAL;
3033}
3034#endif /* CONFIG_VT_HW_CONSOLE_BINDING */
3035
054430e7 3036/* called with console_lock held */
cfafca80
JB		 3037static int fbcon_fb_unbind(int idx)
3038{
3039 int i, new_idx = -1, ret = 0;
3040
2ddce3fd
IA		 3041 if (!fbcon_has_console_bind)
3042 return 0;
3043
cfafca80
JB		 3044 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3045 if (con2fb_map[i] != idx &&
3046 con2fb_map[i] != -1) {
3047 new_idx = i;
3048 break;
3049 }
3050 }
3051
3052 if (new_idx != -1) {
3053 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3054 if (con2fb_map[i] == idx)
3055 set_con2fb_map(i, new_idx, 0);
3056 }
3057 } else
3058 ret = fbcon_unbind();
3059
3060 return ret;
3061}
3062
054430e7 3063/* called with console_lock held */
623e71b0 3064static int fbcon_fb_unregistered(struct fb_info *info)
e614b18d 3065{
66c1ca01 3066 int i, idx;
e614b18d 3067
66c1ca01 3068 idx = info->node;
e614b18d
AD		 3069 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3070 if (con2fb_map[i] == idx)
3071 con2fb_map[i] = -1;
3072 }
3073
3074 if (idx == info_idx) {
3075 info_idx = -1;
3076
3077 for (i = 0; i < FB_MAX; i++) {
3078 if (registered_fb[i] != NULL) {
3079 info_idx = i;
3080 break;
3081 }
3082 }
3083 }
3084
3085 if (info_idx != -1) {
3086 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3087 if (con2fb_map[i] == -1)
3088 con2fb_map[i] = info_idx;
3089 }
3090 }
3091
623e71b0
AD		 3092 if (primary_device == idx)
3093 primary_device = -1;
3094
66c1ca01 3095 if (!num_registered_fb)
e93a9a86 3096 do_unregister_con_driver(&fb_con);
66c1ca01 3097
623e71b0
AD		 3098 return 0;
3099}
3100
054430e7 3101/* called with console_lock held */
6a9ee8af
DA		 3102static void fbcon_remap_all(int idx)
3103{
3104 int i;
3105 for (i = first_fb_vc; i <= last_fb_vc; i++)
3106 set_con2fb_map(i, idx, 0);
3107
3108 if (con_is_bound(&fb_con)) {
3109 printk(KERN_INFO "fbcon: Remapping primary device, "
3110 "fb%i, to tty %i-%i\n", idx,
3111 first_fb_vc + 1, last_fb_vc + 1);
3112 info_idx = idx;
3113 }
3114}
3115
623e71b0 3116#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
afd1db16 3117static void fbcon_select_primary(struct fb_info *info)
623e71b0 3118{
623e71b0
AD		 3119 if (!map_override && primary_device == -1 &&
3120 fb_is_primary_device(info)) {
afd1db16 3121 int i;
623e71b0 3122
afd1db16
AD		 3123 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
3124 info->fix.id, info->node);
623e71b0
AD		 3125 primary_device = info->node;
3126
afd1db16 3127 for (i = first_fb_vc; i <= last_fb_vc; i++)
623e71b0 3128 con2fb_map_boot[i] = primary_device;
623e71b0 3129
afd1db16
AD		 3130 if (con_is_bound(&fb_con)) {
3131 printk(KERN_INFO "fbcon: Remapping primary device, "
3132 "fb%i, to tty %i-%i\n", info->node,
3133 first_fb_vc + 1, last_fb_vc + 1);
3134 info_idx = primary_device;
623e71b0 3135 }
623e71b0
AD		 3136 }
3137
623e71b0
AD		 3138}
3139#else
afd1db16 3140static inline void fbcon_select_primary(struct fb_info *info)
623e71b0 3141{
afd1db16 3142 return;
e614b18d 3143}
623e71b0 3144#endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */
e614b18d 3145
054430e7 3146/* called with console_lock held */
623e71b0 3147static int fbcon_fb_registered(struct fb_info *info)
1da177e4 3148{
66c1ca01 3149 int ret = 0, i, idx;
623e71b0 3150
66c1ca01 3151 idx = info->node;
afd1db16 3152 fbcon_select_primary(info);
1da177e4
LT		 3153
3154 if (info_idx == -1) {
e614b18d 3155 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3156 if (con2fb_map_boot[i] == idx) {
3157 info_idx = idx;
3158 break;
3159 }
3160 }
e614b18d 3161
1da177e4 3162 if (info_idx != -1)
50e244cc 3163 ret = do_fbcon_takeover(1);
1da177e4 3164 } else {
e614b18d 3165 for (i = first_fb_vc; i <= last_fb_vc; i++) {
d1baa4ff 3166 if (con2fb_map_boot[i] == idx)
1da177e4
LT		 3167 set_con2fb_map(i, idx, 0);
3168 }
3169 }
3170
3171 return ret;
3172}
3173
3174static void fbcon_fb_blanked(struct fb_info *info, int blank)
3175{
3176 struct fbcon_ops *ops = info->fbcon_par;
3177 struct vc_data *vc;
3178
3179 if (!ops || ops->currcon < 0)
3180 return;
3181
3182 vc = vc_cons[ops->currcon].d;
3183 if (vc->vc_mode != KD_TEXT ||
3184 registered_fb[con2fb_map[ops->currcon]] != info)
3185 return;
3186
3187 if (CON_IS_VISIBLE(vc)) {
3188 if (blank)
3189 do_blank_screen(0);
3190 else
3191 do_unblank_screen(0);
3192 }
3193 ops->blank_state = blank;
3194}
3195
3196static void fbcon_new_modelist(struct fb_info *info)
3197{
3198 int i;
3199 struct vc_data *vc;
3200 struct fb_var_screeninfo var;
9791d763 3201 const struct fb_videomode *mode;
1da177e4 3202
e614b18d 3203 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3204 if (registered_fb[con2fb_map[i]] != info)
3205 continue;
3206 if (!fb_display[i].mode)
3207 continue;
3208 vc = vc_cons[i].d;
3209 display_to_var(&var, &fb_display[i]);
8fb6567e
MJ		 3210 mode = fb_find_nearest_mode(fb_display[i].mode,
3211 &info->modelist);
1da177e4 3212 fb_videomode_to_var(&var, mode);
d1baa4ff 3213 fbcon_set_disp(info, &var, vc->vc_num);
1da177e4
LT		 3214 }
3215}
3216
38a3dc51
AD		 3217static void fbcon_get_requirement(struct fb_info *info,
3218 struct fb_blit_caps *caps)
3219{
3220 struct vc_data *vc;
3221 struct display *p;
38a3dc51
AD		 3222
3223 if (caps->flags) {
167f07f1 3224 int i, charcnt;
38a3dc51
AD		 3225
3226 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3227 vc = vc_cons[i].d;
167f07f1
AD		 3228 if (vc && vc->vc_mode == KD_TEXT &&
3229 info->node == con2fb_map[i]) {
38a3dc51
AD		 3230 p = &fb_display[i];
3231 caps->x |= 1 << (vc->vc_font.width - 1);
3232 caps->y |= 1 << (vc->vc_font.height - 1);
3233 charcnt = (p->userfont) ?
3234 FNTCHARCNT(p->fontdata) : 256;
3235 if (caps->len < charcnt)
3236 caps->len = charcnt;
3237 }
3238 }
3239 } else {
3240 vc = vc_cons[fg_console].d;
3241
167f07f1
AD		 3242 if (vc && vc->vc_mode == KD_TEXT &&
3243 info->node == con2fb_map[fg_console]) {
38a3dc51 3244 p = &fb_display[fg_console];
167f07f1
AD		 3245 caps->x = 1 << (vc->vc_font.width - 1);
3246 caps->y = 1 << (vc->vc_font.height - 1);
3247 caps->len = (p->userfont) ?
38a3dc51 3248 FNTCHARCNT(p->fontdata) : 256;
38a3dc51
AD		 3249 }
3250 }
3251}
3252
66c1ca01 3253static int fbcon_event_notify(struct notifier_block *self,
1da177e4
LT		 3254 unsigned long action, void *data)
3255{
3256 struct fb_event *event = data;
3257 struct fb_info *info = event->info;
3258 struct fb_videomode *mode;
3259 struct fb_con2fbmap *con2fb;
38a3dc51 3260 struct fb_blit_caps *caps;
66c1ca01 3261 int idx, ret = 0;
1da177e4 3262
e614b18d
AD		 3263 /*
3264 * ignore all events except driver registration and deregistration
3265 * if fbcon is not active
3266 */
3267 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
3268 action == FB_EVENT_FB_UNREGISTERED))
3269 goto done;
3270
1da177e4
LT		 3271 switch(action) {
3272 case FB_EVENT_SUSPEND:
3273 fbcon_suspended(info);
3274 break;
3275 case FB_EVENT_RESUME:
3276 fbcon_resumed(info);
3277 break;
3278 case FB_EVENT_MODE_CHANGE:
3279 fbcon_modechanged(info);
3280 break;
7726e9e1
AD		 3281 case FB_EVENT_MODE_CHANGE_ALL:
3282 fbcon_set_all_vcs(info);
3283 break;
1da177e4
LT		 3284 case FB_EVENT_MODE_DELETE:
3285 mode = event->data;
3286 ret = fbcon_mode_deleted(info, mode);
3287 break;
cfafca80 3288 case FB_EVENT_FB_UNBIND:
66c1ca01 3289 idx = info->node;
66c1ca01 3290 ret = fbcon_fb_unbind(idx);
cfafca80 3291 break;
1da177e4 3292 case FB_EVENT_FB_REGISTERED:
623e71b0 3293 ret = fbcon_fb_registered(info);
1da177e4 3294 break;
e614b18d 3295 case FB_EVENT_FB_UNREGISTERED:
623e71b0 3296 ret = fbcon_fb_unregistered(info);
e614b18d 3297 break;
1da177e4 3298 case FB_EVENT_SET_CONSOLE_MAP:
054430e7 3299 /* called with console lock held */
1da177e4
LT		 3300 con2fb = event->data;
3301 ret = set_con2fb_map(con2fb->console - 1,
3302 con2fb->framebuffer, 1);
3303 break;
3304 case FB_EVENT_GET_CONSOLE_MAP:
3305 con2fb = event->data;
3306 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
3307 break;
3308 case FB_EVENT_BLANK:
3309 fbcon_fb_blanked(info, *(int *)event->data);
3310 break;
3311 case FB_EVENT_NEW_MODELIST:
3312 fbcon_new_modelist(info);
3313 break;
38a3dc51
AD		 3314 case FB_EVENT_GET_REQ:
3315 caps = event->data;
3316 fbcon_get_requirement(info, caps);
3317 break;
6a9ee8af
DA		 3318 case FB_EVENT_REMAP_ALL_CONSOLE:
3319 idx = info->node;
3320 fbcon_remap_all(idx);
3321 break;
1da177e4 3322 }
e614b18d 3323done:
1da177e4
LT		 3324 return ret;
3325}
3326
3327/*
3328 * The console `switch' structure for the frame buffer based console
3329 */
3330
3331static const struct consw fb_con = {
3332 .owner = THIS_MODULE,
3333 .con_startup = fbcon_startup,
3334 .con_init = fbcon_init,
3335 .con_deinit = fbcon_deinit,
3336 .con_clear = fbcon_clear,
3337 .con_putc = fbcon_putc,
3338 .con_putcs = fbcon_putcs,
3339 .con_cursor = fbcon_cursor,
3340 .con_scroll = fbcon_scroll,
3341 .con_bmove = fbcon_bmove,
3342 .con_switch = fbcon_switch,
3343 .con_blank = fbcon_blank,
3344 .con_font_set = fbcon_set_font,
3345 .con_font_get = fbcon_get_font,
3346 .con_font_default = fbcon_set_def_font,
3347 .con_font_copy = fbcon_copy_font,
3348 .con_set_palette = fbcon_set_palette,
3349 .con_scrolldelta = fbcon_scrolldelta,
3350 .con_set_origin = fbcon_set_origin,
3351 .con_invert_region = fbcon_invert_region,
3352 .con_screen_pos = fbcon_screen_pos,
3353 .con_getxy = fbcon_getxy,
3354 .con_resize = fbcon_resize,
d219adc1
JB		 3355 .con_debug_enter = fbcon_debug_enter,
3356 .con_debug_leave = fbcon_debug_leave,
1da177e4
LT		 3357};
3358
3359static struct notifier_block fbcon_event_notifier = {
3360 .notifier_call = fbcon_event_notify,
3361};
3362
0c6c1ce0
AD		 3363static ssize_t store_rotate(struct device *device,
3364 struct device_attribute *attr, const char *buf,
3365 size_t count)
9a179176
AD		 3366{
3367 struct fb_info *info;
3368 int rotate, idx;
3369 char **last = NULL;
3370
e614b18d
AD		 3371 if (fbcon_has_exited)
3372 return count;
3373
ac751efa 3374 console_lock();
9a179176
AD		 3375 idx = con2fb_map[fg_console];
3376
3377 if (idx == -1 || registered_fb[idx] == NULL)
3378 goto err;
3379
3380 info = registered_fb[idx];
3381 rotate = simple_strtoul(buf, last, 0);
3382 fbcon_rotate(info, rotate);
3383err:
ac751efa 3384 console_unlock();
9a179176
AD		 3385 return count;
3386}
3387
0c6c1ce0
AD		 3388static ssize_t store_rotate_all(struct device *device,
3389 struct device_attribute *attr,const char *buf,
3390 size_t count)
9a179176
AD		 3391{
3392 struct fb_info *info;
3393 int rotate, idx;
3394 char **last = NULL;
3395
e614b18d
AD		 3396 if (fbcon_has_exited)
3397 return count;
3398
ac751efa 3399 console_lock();
9a179176
AD		 3400 idx = con2fb_map[fg_console];
3401
3402 if (idx == -1 || registered_fb[idx] == NULL)
3403 goto err;
3404
3405 info = registered_fb[idx];
3406 rotate = simple_strtoul(buf, last, 0);
3407 fbcon_rotate_all(info, rotate);
3408err:
ac751efa 3409 console_unlock();
9a179176
AD		 3410 return count;
3411}
3412
0c6c1ce0
AD		 3413static ssize_t show_rotate(struct device *device,
3414 struct device_attribute *attr,char *buf)
9a179176
AD		 3415{
3416 struct fb_info *info;
3417 int rotate = 0, idx;
3418
e614b18d
AD		 3419 if (fbcon_has_exited)
3420 return 0;
3421
ac751efa 3422 console_lock();
9a179176
AD		 3423 idx = con2fb_map[fg_console];
3424
3425 if (idx == -1 || registered_fb[idx] == NULL)
3426 goto err;
3427
3428 info = registered_fb[idx];
3429 rotate = fbcon_get_rotate(info);
3430err:
ac751efa 3431 console_unlock();
9a179176
AD		 3432 return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3433}
3434
0c6c1ce0
AD		 3435static ssize_t show_cursor_blink(struct device *device,
3436 struct device_attribute *attr, char *buf)
acba9cd0
AD		 3437{
3438 struct fb_info *info;
3439 struct fbcon_ops *ops;
3440 int idx, blink = -1;
3441
3442 if (fbcon_has_exited)
3443 return 0;
3444
ac751efa 3445 console_lock();
acba9cd0
AD		 3446 idx = con2fb_map[fg_console];
3447
3448 if (idx == -1 || registered_fb[idx] == NULL)
3449 goto err;
3450
3451 info = registered_fb[idx];
3452 ops = info->fbcon_par;
3453
3454 if (!ops)
3455 goto err;
3456
3457 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3458err:
ac751efa 3459 console_unlock();
acba9cd0
AD		 3460 return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3461}
3462
0c6c1ce0
AD		 3463static ssize_t store_cursor_blink(struct device *device,
3464 struct device_attribute *attr,
acba9cd0
AD		 3465 const char *buf, size_t count)
3466{
3467 struct fb_info *info;
3468 int blink, idx;
3469 char **last = NULL;
3470
3471 if (fbcon_has_exited)
3472 return count;
3473
ac751efa 3474 console_lock();
acba9cd0
AD		 3475 idx = con2fb_map[fg_console];
3476
3477 if (idx == -1 || registered_fb[idx] == NULL)
3478 goto err;
3479
3480 info = registered_fb[idx];
3481
3482 if (!info->fbcon_par)
3483 goto err;
3484
3485 blink = simple_strtoul(buf, last, 0);
3486
3487 if (blink) {
3488 fbcon_cursor_noblink = 0;
3489 fbcon_add_cursor_timer(info);
3490 } else {
3491 fbcon_cursor_noblink = 1;
3492 fbcon_del_cursor_timer(info);
3493 }
3494
3495err:
ac751efa 3496 console_unlock();
acba9cd0
AD		 3497 return count;
3498}
3499
0c6c1ce0 3500static struct device_attribute device_attrs[] = {
9a179176
AD		 3501 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3502 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
acba9cd0
AD		 3503 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3504 store_cursor_blink),
9a179176
AD		 3505};
3506
0c6c1ce0 3507static int fbcon_init_device(void)
9a179176 3508{
0a727dea
AD		 3509 int i, error = 0;
3510
3511 fbcon_has_sysfs = 1;
3512
0c6c1ce0
AD		 3513 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
3514 error = device_create_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3515
3516 if (error)
3517 break;
3518 }
3519
3520 if (error) {
3521 while (--i >= 0)
0c6c1ce0 3522 device_remove_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3523
3524 fbcon_has_sysfs = 0;
3525 }
9a179176 3526
9a179176
AD		 3527 return 0;
3528}
3529
5428b044 3530static void fbcon_start(void)
1da177e4 3531{
5428b044
AD		 3532 if (num_registered_fb) {
3533 int i;
9a179176 3534
ac751efa 3535 console_lock();
1da177e4 3536
1da177e4
LT		 3537 for (i = 0; i < FB_MAX; i++) {
3538 if (registered_fb[i] != NULL) {
3539 info_idx = i;
3540 break;
3541 }
3542 }
5428b044 3543
ac751efa 3544 console_unlock();
1da177e4
LT		 3545 fbcon_takeover(0);
3546 }
9a179176
AD		 3547}
3548
5428b044 3549static void fbcon_exit(void)
9a179176 3550{
e55186fe
AD		 3551 struct fb_info *info;
3552 int i, j, mapped;
3553
e614b18d
AD		 3554 if (fbcon_has_exited)
3555 return;
3556
e55186fe 3557 kfree((void *)softback_buf);
5428b044 3558 softback_buf = 0UL;
e55186fe
AD		 3559
3560 for (i = 0; i < FB_MAX; i++) {
142092e5 3561 int pending = 0;
beaa4867 3562
e55186fe
AD		 3563 mapped = 0;
3564 info = registered_fb[i];
3565
3566 if (info == NULL)
3567 continue;
3568
142092e5
JP		 3569 if (info->queue.func)
3570 pending = cancel_work_sync(&info->queue);
beaa4867
GL		 3571 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" :
3572 "no"));
3573
e614b18d
AD		 3574 for (j = first_fb_vc; j <= last_fb_vc; j++) {
3575 if (con2fb_map[j] == i)
e55186fe 3576 mapped = 1;
e55186fe
AD		 3577 }
3578
3579 if (mapped) {
3580 if (info->fbops->fb_release)
3581 info->fbops->fb_release(info, 0);
3582 module_put(info->fbops->owner);
5428b044
AD		 3583
3584 if (info->fbcon_par) {
e299dd4d
DJ		 3585 struct fbcon_ops *ops = info->fbcon_par;
3586
5428b044 3587 fbcon_del_cursor_timer(info);
e299dd4d 3588 kfree(ops->cursor_src);
5428b044
AD		 3589 kfree(info->fbcon_par);
3590 info->fbcon_par = NULL;
3591 }
3592
3593 if (info->queue.func == fb_flashcursor)
3594 info->queue.func = NULL;
e55186fe
AD		 3595 }
3596 }
3597
e614b18d 3598 fbcon_has_exited = 1;
5428b044
AD		 3599}
3600
3601static int __init fb_console_init(void)
3602{
3603 int i;
3604
ac751efa 3605 console_lock();
5428b044 3606 fb_register_client(&fbcon_event_notifier);
77997aaa
GKH		 3607 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
3608 "fbcon");
5428b044 3609
0c6c1ce0
AD		 3610 if (IS_ERR(fbcon_device)) {
3611 printk(KERN_WARNING "Unable to create device "
5428b044 3612 "for fbcon; errno = %ld\n",
0c6c1ce0
AD		 3613 PTR_ERR(fbcon_device));
3614 fbcon_device = NULL;
5428b044 3615 } else
0c6c1ce0 3616 fbcon_init_device();
5428b044
AD		 3617
3618 for (i = 0; i < MAX_NR_CONSOLES; i++)
3619 con2fb_map[i] = -1;
3620
ac751efa 3621 console_unlock();
5428b044
AD		 3622 fbcon_start();
3623 return 0;
3624}
3625
3626module_init(fb_console_init);
3627
3628#ifdef MODULE
3629
0c6c1ce0 3630static void __exit fbcon_deinit_device(void)
5428b044
AD		 3631{
3632 int i;
3633
0a727dea 3634 if (fbcon_has_sysfs) {
0c6c1ce0
AD		 3635 for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
3636 device_remove_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3637
3638 fbcon_has_sysfs = 0;
3639 }
9a179176
AD		 3640}
3641
1da177e4
LT		 3642static void __exit fb_console_exit(void)
3643{
ac751efa 3644 console_lock();
1da177e4 3645 fb_unregister_client(&fbcon_event_notifier);
0c6c1ce0
AD		 3646 fbcon_deinit_device();
3647 device_destroy(fb_class, MKDEV(0, 0));
e614b18d 3648 fbcon_exit();
ac751efa 3649 console_unlock();
e614b18d 3650 unregister_con_driver(&fb_con);
1da177e4
LT		 3651}
3652
3653module_exit(fb_console_exit);
3654
3655#endif
3656
3657MODULE_LICENSE("GPL");
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