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fbcon: Fix vc attr at deinit
[mirror_ubuntu-zesty-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
acba9cd0 149static int fbcon_cursor_noblink;
1da177e4
LT		 150
151#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
152
153/*
154 * Interface used by the world
155 */
156
157static const char *fbcon_startup(void);
158static void fbcon_init(struct vc_data *vc, int init);
159static void fbcon_deinit(struct vc_data *vc);
160static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
161 int width);
162static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
163static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
164 int count, int ypos, int xpos);
165static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
166static void fbcon_cursor(struct vc_data *vc, int mode);
1da177e4
LT		 167static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
168 int height, int width);
169static int fbcon_switch(struct vc_data *vc);
170static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
709280da 171static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table);
1da177e4
LT		 172
173/*
174 * Internal routines
175 */
1da177e4
LT		 176static __inline__ void ywrap_up(struct vc_data *vc, int count);
177static __inline__ void ywrap_down(struct vc_data *vc, int count);
178static __inline__ void ypan_up(struct vc_data *vc, int count);
179static __inline__ void ypan_down(struct vc_data *vc, int count);
180static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
181 int dy, int dx, int height, int width, u_int y_break);
182static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
d1baa4ff 183 int unit);
1da177e4
LT		 184static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
185 int line, int count, int dy);
a812c94b
AD		 186static void fbcon_modechanged(struct fb_info *info);
187static void fbcon_set_all_vcs(struct fb_info *info);
5428b044
AD		 188static void fbcon_start(void);
189static void fbcon_exit(void);
0c6c1ce0 190static struct device *fbcon_device;
9a179176 191
dbcbfe1e 192#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
b73deed3 193static inline void fbcon_set_rotation(struct fb_info *info)
dbcbfe1e
AD		 194{
195 struct fbcon_ops *ops = info->fbcon_par;
196
197 if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
b73deed3
AD		 198 ops->p->con_rotate < 4)
199 ops->rotate = ops->p->con_rotate;
dbcbfe1e
AD		 200 else
201 ops->rotate = 0;
202}
a812c94b
AD		 203
204static void fbcon_rotate(struct fb_info *info, u32 rotate)
205{
206 struct fbcon_ops *ops= info->fbcon_par;
207 struct fb_info *fb_info;
208
209 if (!ops || ops->currcon == -1)
210 return;
211
212 fb_info = registered_fb[con2fb_map[ops->currcon]];
213
214 if (info == fb_info) {
215 struct display *p = &fb_display[ops->currcon];
216
217 if (rotate < 4)
218 p->con_rotate = rotate;
219 else
220 p->con_rotate = 0;
221
222 fbcon_modechanged(info);
223 }
224}
225
226static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
227{
228 struct fbcon_ops *ops = info->fbcon_par;
229 struct vc_data *vc;
230 struct display *p;
231 int i;
232
233 if (!ops || ops->currcon < 0 || rotate > 3)
234 return;
235
e614b18d 236 for (i = first_fb_vc; i <= last_fb_vc; i++) {
a812c94b
AD		 237 vc = vc_cons[i].d;
238 if (!vc || vc->vc_mode != KD_TEXT ||
239 registered_fb[con2fb_map[i]] != info)
240 continue;
241
242 p = &fb_display[vc->vc_num];
243 p->con_rotate = rotate;
244 }
245
246 fbcon_set_all_vcs(info);
247}
dbcbfe1e 248#else
b73deed3 249static inline void fbcon_set_rotation(struct fb_info *info)
e4fc2761
AD		 250{
251 struct fbcon_ops *ops = info->fbcon_par;
252
253 ops->rotate = FB_ROTATE_UR;
254}
a812c94b
AD		 255
256static void fbcon_rotate(struct fb_info *info, u32 rotate)
257{
258 return;
259}
260
261static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
262{
263 return;
264}
dbcbfe1e 265#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
e4fc2761 266
a812c94b
AD		 267static int fbcon_get_rotate(struct fb_info *info)
268{
269 struct fbcon_ops *ops = info->fbcon_par;
270
271 return (ops) ? ops->rotate : 0;
272}
273
1da177e4
LT		 274static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
275{
276 struct fbcon_ops *ops = info->fbcon_par;
277
278 return (info->state != FBINFO_STATE_RUNNING ||
8fd4bd22
JB		 279 vc->vc_mode != KD_TEXT || ops->graphics) &&
280 !vt_force_oops_output(vc);
1da177e4
LT		 281}
282
da909ce4 283static int get_color(struct vc_data *vc, struct fb_info *info,
1da177e4
LT		 284 u16 c, int is_fg)
285{
b8c90945 286 int depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 287 int color = 0;
288
289 if (console_blanked) {
290 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
291
292 c = vc->vc_video_erase_char & charmask;
293 }
294
295 if (depth != 1)
296 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
297 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
298
299 switch (depth) {
300 case 1:
301 {
91c43132 302 int col = mono_col(info);
1da177e4 303 /* 0 or 1 */
b8c90945
AD		 304 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
305 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
1da177e4
LT		 306
307 if (console_blanked)
308 fg = bg;
309
310 color = (is_fg) ? fg : bg;
311 break;
312 }
313 case 2:
314 /*
315 * Scale down 16-colors to 4 colors. Default 4-color palette
2cc38ed1
AD		 316 * is grayscale. However, simply dividing the values by 4
317 * will not work, as colors 1, 2 and 3 will be scaled-down
318 * to zero rendering them invisible. So empirically convert
319 * colors to a sane 4-level grayscale.
1da177e4 320 */
2cc38ed1
AD		 321 switch (color) {
322 case 0:
323 color = 0; /* black */
324 break;
325 case 1 ... 6:
326 color = 2; /* white */
327 break;
328 case 7 ... 8:
329 color = 1; /* gray */
330 break;
331 default:
332 color = 3; /* intense white */
333 break;
334 }
335 break;
1da177e4
LT		 336 case 3:
337 /*
338 * Last 8 entries of default 16-color palette is a more intense
339 * version of the first 8 (i.e., same chrominance, different
340 * luminance).
341 */
342 color &= 7;
343 break;
344 }
345
346
347 return color;
348}
349
4d9c5b6e
AD		 350static void fbcon_update_softback(struct vc_data *vc)
351{
352 int l = fbcon_softback_size / vc->vc_size_row;
353
354 if (l > 5)
355 softback_end = softback_buf + l * vc->vc_size_row;
356 else
357 /* Smaller scrollback makes no sense, and 0 would screw
358 the operation totally */
359 softback_top = 0;
360}
361
c4028958 362static void fb_flashcursor(struct work_struct *work)
1da177e4 363{
c4028958 364 struct fb_info *info = container_of(work, struct fb_info, queue);
1da177e4 365 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 366 struct vc_data *vc = NULL;
367 int c;
368 int mode;
d8636a27
DA		 369 int ret;
370
371 /* FIXME: we should sort out the unbind locking instead */
372 /* instead we just fail to flash the cursor if we can't get
373 * the lock instead of blocking fbcon deinit */
374 ret = console_trylock();
375 if (ret == 0)
376 return;
1da177e4 377
5428b044 378 if (ops && ops->currcon != -1)
1da177e4
LT		 379 vc = vc_cons[ops->currcon].d;
380
6ca8dfd7 381 if (!vc || !con_is_visible(vc) ||
dbd4f128 382 registered_fb[con2fb_map[vc->vc_num]] != info ||
212f2639 383 vc->vc_deccm != 1) {
ac751efa 384 console_unlock();
1da177e4 385 return;
5428b044
AD		 386 }
387
1da177e4
LT		 388 c = scr_readw((u16 *) vc->vc_pos);
389 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
390 CM_ERASE : CM_DRAW;
b73deed3 391 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
1da177e4 392 get_color(vc, info, c, 0));
ac751efa 393 console_unlock();
1da177e4
LT		 394}
395
1da177e4
LT		 396static void cursor_timer_handler(unsigned long dev_addr)
397{
398 struct fb_info *info = (struct fb_info *) dev_addr;
399 struct fbcon_ops *ops = info->fbcon_par;
400
a85f1a41 401 queue_work(system_power_efficient_wq, &info->queue);
27a4c827 402 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
1da177e4
LT		 403}
404
88fb2c6e
AD		 405static void fbcon_add_cursor_timer(struct fb_info *info)
406{
407 struct fbcon_ops *ops = info->fbcon_par;
408
409 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
acba9cd0
AD		 410 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
411 !fbcon_cursor_noblink) {
88fb2c6e 412 if (!info->queue.func)
c4028958 413 INIT_WORK(&info->queue, fb_flashcursor);
88fb2c6e
AD		 414
415 init_timer(&ops->cursor_timer);
416 ops->cursor_timer.function = cursor_timer_handler;
27a4c827 417 ops->cursor_timer.expires = jiffies + ops->cur_blink_jiffies;
88fb2c6e
AD		 418 ops->cursor_timer.data = (unsigned long ) info;
419 add_timer(&ops->cursor_timer);
420 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
421 }
422}
423
424static void fbcon_del_cursor_timer(struct fb_info *info)
425{
426 struct fbcon_ops *ops = info->fbcon_par;
427
428 if (info->queue.func == fb_flashcursor &&
429 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
430 del_timer_sync(&ops->cursor_timer);
431 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
432 }
433}
434
1da177e4
LT		 435#ifndef MODULE
436static int __init fb_console_setup(char *this_opt)
437{
438 char *options;
439 int i, j;
440
441 if (!this_opt || !*this_opt)
9b41046c 442 return 1;
1da177e4
LT		 443
444 while ((options = strsep(&this_opt, ",")) != NULL) {
37773c4e 445 if (!strncmp(options, "font:", 5)) {
e432964a 446 strlcpy(fontname, options + 5, sizeof(fontname));
37773c4e
MH		 447 continue;
448 }
1da177e4
LT		 449
450 if (!strncmp(options, "scrollback:", 11)) {
451 options += 11;
452 if (*options) {
453 fbcon_softback_size = simple_strtoul(options, &options, 0);
454 if (*options == 'k' || *options == 'K') {
455 fbcon_softback_size *= 1024;
1da177e4 456 }
37773c4e
MH		 457 }
458 continue;
1da177e4
LT		 459 }
460
461 if (!strncmp(options, "map:", 4)) {
462 options += 4;
623e71b0 463 if (*options) {
1da177e4
LT		 464 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
465 if (!options[j])
466 j = 0;
467 con2fb_map_boot[i] =
468 (options[j++]-'0') % FB_MAX;
469 }
623e71b0 470
4769a9a5 471 fbcon_map_override();
623e71b0 472 }
37773c4e 473 continue;
1da177e4
LT		 474 }
475
476 if (!strncmp(options, "vc:", 3)) {
477 options += 3;
478 if (*options)
479 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
480 if (first_fb_vc < 0)
481 first_fb_vc = 0;
482 if (*options++ == '-')
483 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
484 fbcon_is_default = 0;
37773c4e
MH		 485 continue;
486 }
e4fc2761
AD		 487
488 if (!strncmp(options, "rotate:", 7)) {
489 options += 7;
490 if (*options)
2428e59b
MS		 491 initial_rotation = simple_strtoul(options, &options, 0);
492 if (initial_rotation > 3)
493 initial_rotation = 0;
37773c4e 494 continue;
e4fc2761 495 }
1da177e4 496 }
9b41046c 497 return 1;
1da177e4
LT		 498}
499
500__setup("fbcon=", fb_console_setup);
501#endif
502
503static int search_fb_in_map(int idx)
504{
505 int i, retval = 0;
506
e614b18d 507 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 508 if (con2fb_map[i] == idx)
509 retval = 1;
510 }
511 return retval;
512}
513
514static int search_for_mapped_con(void)
515{
516 int i, retval = 0;
517
e614b18d 518 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 519 if (con2fb_map[i] != -1)
520 retval = 1;
521 }
522 return retval;
523}
524
50e244cc
AC		 525static int do_fbcon_takeover(int show_logo)
526{
527 int err, i;
528
529 if (!num_registered_fb)
530 return -ENODEV;
531
532 if (!show_logo)
533 logo_shown = FBCON_LOGO_DONTSHOW;
534
535 for (i = first_fb_vc; i <= last_fb_vc; i++)
536 con2fb_map[i] = info_idx;
537
538 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc,
539 fbcon_is_default);
540
541 if (err) {
542 for (i = first_fb_vc; i <= last_fb_vc; i++)
543 con2fb_map[i] = -1;
544 info_idx = -1;
545 } else {
546 fbcon_has_console_bind = 1;
1da177e4
LT		 547 }
548
549 return err;
550}
551
70802c60
AD		 552#ifdef MODULE
553static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
554 int cols, int rows, int new_cols, int new_rows)
555{
556 logo_shown = FBCON_LOGO_DONTSHOW;
557}
558#else
1da177e4
LT		 559static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
560 int cols, int rows, int new_cols, int new_rows)
561{
562 /* Need to make room for the logo */
9c44e5f6 563 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 564 int cnt, erase = vc->vc_video_erase_char, step;
565 unsigned short *save = NULL, *r, *q;
49a1d28f 566 int logo_height;
1da177e4 567
70802c60
AD		 568 if (info->flags & FBINFO_MODULE) {
569 logo_shown = FBCON_LOGO_DONTSHOW;
570 return;
571 }
572
1da177e4
LT		 573 /*
574 * remove underline attribute from erase character
575 * if black and white framebuffer.
576 */
b8c90945 577 if (fb_get_color_depth(&info->var, &info->fix) == 1)
1da177e4 578 erase &= ~0x400;
9c44e5f6 579 logo_height = fb_prepare_logo(info, ops->rotate);
416e74ea 580 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);
1da177e4
LT		 581 q = (unsigned short *) (vc->vc_origin +
582 vc->vc_size_row * rows);
583 step = logo_lines * cols;
584 for (r = q - logo_lines * cols; r < q; r++)
585 if (scr_readw(r) != vc->vc_video_erase_char)
586 break;
587 if (r != q && new_rows >= rows + logo_lines) {
588 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
589 if (save) {
590 int i = cols < new_cols ? cols : new_cols;
591 scr_memsetw(save, erase, logo_lines * new_cols * 2);
592 r = q - step;
593 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
594 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
595 r = q;
596 }
597 }
598 if (r == q) {
599 /* We can scroll screen down */
600 r = q - step - cols;
601 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
602 scr_memcpyw(r + step, r, vc->vc_size_row);
603 r -= cols;
604 }
605 if (!save) {
250038f5
GU		 606 int lines;
607 if (vc->vc_y + logo_lines >= rows)
608 lines = rows - vc->vc_y - 1;
609 else
610 lines = logo_lines;
611 vc->vc_y += lines;
612 vc->vc_pos += lines * vc->vc_size_row;
1da177e4
LT		 613 }
614 }
615 scr_memsetw((unsigned short *) vc->vc_origin,
616 erase,
617 vc->vc_size_row * logo_lines);
618
6ca8dfd7 619 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) {
1da177e4
LT		 620 fbcon_clear_margins(vc, 0);
621 update_screen(vc);
622 }
623
624 if (save) {
625 q = (unsigned short *) (vc->vc_origin +
626 vc->vc_size_row *
627 rows);
628 scr_memcpyw(q, save, logo_lines * new_cols * 2);
629 vc->vc_y += logo_lines;
630 vc->vc_pos += logo_lines * vc->vc_size_row;
631 kfree(save);
632 }
633
634 if (logo_lines > vc->vc_bottom) {
635 logo_shown = FBCON_LOGO_CANSHOW;
636 printk(KERN_INFO
637 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
638 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
639 logo_shown = FBCON_LOGO_DRAW;
640 vc->vc_top = logo_lines;
641 }
642}
70802c60 643#endif /* MODULE */
1da177e4
LT		 644
645#ifdef CONFIG_FB_TILEBLITTING
b73deed3 646static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 647{
648 struct fbcon_ops *ops = info->fbcon_par;
649
b73deed3 650 ops->p = &fb_display[vc->vc_num];
ab767201 651
1da177e4 652 if ((info->flags & FBINFO_MISC_TILEBLITTING))
b73deed3 653 fbcon_set_tileops(vc, info);
e4fc2761 654 else {
b73deed3 655 fbcon_set_rotation(info);
1da177e4 656 fbcon_set_bitops(ops);
e4fc2761 657 }
1da177e4 658}
38b4982c
AD		 659
660static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
661{
662 int err = 0;
663
664 if (info->flags & FBINFO_MISC_TILEBLITTING &&
665 info->tileops->fb_get_tilemax(info) < charcount)
666 err = 1;
667
668 return err;
669}
1da177e4 670#else
b73deed3 671static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 672{
673 struct fbcon_ops *ops = info->fbcon_par;
674
675 info->flags &= ~FBINFO_MISC_TILEBLITTING;
b73deed3
AD		 676 ops->p = &fb_display[vc->vc_num];
677 fbcon_set_rotation(info);
1da177e4
LT		 678 fbcon_set_bitops(ops);
679}
38b4982c
AD		 680
681static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
682{
683 return 0;
684}
685
1da177e4
LT		 686#endif /* CONFIG_MISC_TILEBLITTING */
687
688
689static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
690 int unit, int oldidx)
691{
692 struct fbcon_ops *ops = NULL;
693 int err = 0;
694
695 if (!try_module_get(info->fbops->owner))
696 err = -ENODEV;
697
698 if (!err && info->fbops->fb_open &&
699 info->fbops->fb_open(info, 0))
700 err = -ENODEV;
701
702 if (!err) {
a39bc34e 703 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 704 if (!ops)
705 err = -ENOMEM;
706 }
707
708 if (!err) {
a1e533ec 709 ops->cur_blink_jiffies = HZ / 5;
1da177e4 710 info->fbcon_par = ops;
d1baa4ff
AD		 711
712 if (vc)
713 set_blitting_type(vc, info);
1da177e4
LT		 714 }
715
716 if (err) {
717 con2fb_map[unit] = oldidx;
718 module_put(info->fbops->owner);
719 }
720
721 return err;
722}
723
724static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
725 struct fb_info *newinfo, int unit,
726 int oldidx, int found)
727{
728 struct fbcon_ops *ops = oldinfo->fbcon_par;
0fcf6ada 729 int err = 0, ret;
1da177e4
LT		 730
731 if (oldinfo->fbops->fb_release &&
732 oldinfo->fbops->fb_release(oldinfo, 0)) {
733 con2fb_map[unit] = oldidx;
734 if (!found && newinfo->fbops->fb_release)
735 newinfo->fbops->fb_release(newinfo, 0);
736 if (!found)
737 module_put(newinfo->fbops->owner);
738 err = -ENODEV;
739 }
740
741 if (!err) {
88fb2c6e 742 fbcon_del_cursor_timer(oldinfo);
1da177e4
LT		 743 kfree(ops->cursor_state.mask);
744 kfree(ops->cursor_data);
7a966fbd 745 kfree(ops->cursor_src);
e4fc2761 746 kfree(ops->fontbuffer);
1da177e4
LT		 747 kfree(oldinfo->fbcon_par);
748 oldinfo->fbcon_par = NULL;
749 module_put(oldinfo->fbops->owner);
dd0314f7
AD		 750 /*
751 If oldinfo and newinfo are driving the same hardware,
752 the fb_release() method of oldinfo may attempt to
753 restore the hardware state. This will leave the
754 newinfo in an undefined state. Thus, a call to
755 fb_set_par() may be needed for the newinfo.
756 */
5f4dc28b 757 if (newinfo && newinfo->fbops->fb_set_par) {
0fcf6ada
FTS		 758 ret = newinfo->fbops->fb_set_par(newinfo);
759
760 if (ret)
761 printk(KERN_ERR "con2fb_release_oldinfo: "
762 "detected unhandled fb_set_par error, "
763 "error code %d\n", ret);
764 }
1da177e4
LT		 765 }
766
767 return err;
768}
769
1da177e4
LT		 770static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
771 int unit, int show_logo)
772{
773 struct fbcon_ops *ops = info->fbcon_par;
0fcf6ada 774 int ret;
1da177e4
LT		 775
776 ops->currcon = fg_console;
777
0fcf6ada
FTS		 778 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) {
779 ret = info->fbops->fb_set_par(info);
780
781 if (ret)
782 printk(KERN_ERR "con2fb_init_display: detected "
783 "unhandled fb_set_par error, "
784 "error code %d\n", ret);
785 }
1da177e4
LT		 786
787 ops->flags |= FBCON_FLAGS_INIT;
788 ops->graphics = 0;
d1baa4ff 789 fbcon_set_disp(info, &info->var, unit);
1da177e4
LT		 790
791 if (show_logo) {
792 struct vc_data *fg_vc = vc_cons[fg_console].d;
793 struct fb_info *fg_info =
794 registered_fb[con2fb_map[fg_console]];
795
796 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
797 fg_vc->vc_rows, fg_vc->vc_cols,
798 fg_vc->vc_rows);
799 }
800
801 update_screen(vc_cons[fg_console].d);
802}
803
804/**
805 * set_con2fb_map - map console to frame buffer device
806 * @unit: virtual console number to map
807 * @newidx: frame buffer index to map virtual console to
808 * @user: user request
809 *
810 * Maps a virtual console @unit to a frame buffer device
811 * @newidx.
054430e7
DA		 812 *
813 * This should be called with the console lock held.
1da177e4
LT		 814 */
815static int set_con2fb_map(int unit, int newidx, int user)
816{
817 struct vc_data *vc = vc_cons[unit].d;
818 int oldidx = con2fb_map[unit];
819 struct fb_info *info = registered_fb[newidx];
820 struct fb_info *oldinfo = NULL;
821 int found, err = 0;
822
823 if (oldidx == newidx)
824 return 0;
825
32b98bf8 826 if (!info)
e614b18d 827 return -EINVAL;
1da177e4 828
32b98bf8 829 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) {
1da177e4 830 info_idx = newidx;
054430e7 831 return do_fbcon_takeover(0);
1da177e4
LT		 832 }
833
834 if (oldidx != -1)
835 oldinfo = registered_fb[oldidx];
836
837 found = search_fb_in_map(newidx);
838
1da177e4
LT		 839 con2fb_map[unit] = newidx;
840 if (!err && !found)
841 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
842
843
844 /*
845 * If old fb is not mapped to any of the consoles,
846 * fbcon should release it.
847 */
848 if (!err && oldinfo && !search_fb_in_map(oldidx))
849 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
850 found);
851
852 if (!err) {
853 int show_logo = (fg_console == 0 && !user &&
854 logo_shown != FBCON_LOGO_DONTSHOW);
855
856 if (!found)
88fb2c6e 857 fbcon_add_cursor_timer(info);
1da177e4
LT		 858 con2fb_map_boot[unit] = newidx;
859 con2fb_init_display(vc, info, unit, show_logo);
860 }
861
e614b18d
AD		 862 if (!search_fb_in_map(info_idx))
863 info_idx = newidx;
864
1da177e4
LT		 865 return err;
866}
867
868/*
869 * Low Level Operations
870 */
155957f5 871/* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */
1da177e4
LT		 872static int var_to_display(struct display *disp,
873 struct fb_var_screeninfo *var,
874 struct fb_info *info)
875{
876 disp->xres_virtual = var->xres_virtual;
877 disp->yres_virtual = var->yres_virtual;
878 disp->bits_per_pixel = var->bits_per_pixel;
879 disp->grayscale = var->grayscale;
880 disp->nonstd = var->nonstd;
881 disp->accel_flags = var->accel_flags;
882 disp->height = var->height;
883 disp->width = var->width;
884 disp->red = var->red;
885 disp->green = var->green;
886 disp->blue = var->blue;
887 disp->transp = var->transp;
888 disp->rotate = var->rotate;
889 disp->mode = fb_match_mode(var, &info->modelist);
890 if (disp->mode == NULL)
891 /* This should not happen */
892 return -EINVAL;
893 return 0;
894}
895
896static void display_to_var(struct fb_var_screeninfo *var,
897 struct display *disp)
898{
899 fb_videomode_to_var(var, disp->mode);
900 var->xres_virtual = disp->xres_virtual;
901 var->yres_virtual = disp->yres_virtual;
902 var->bits_per_pixel = disp->bits_per_pixel;
903 var->grayscale = disp->grayscale;
904 var->nonstd = disp->nonstd;
905 var->accel_flags = disp->accel_flags;
906 var->height = disp->height;
907 var->width = disp->width;
908 var->red = disp->red;
909 var->green = disp->green;
910 var->blue = disp->blue;
911 var->transp = disp->transp;
912 var->rotate = disp->rotate;
913}
914
915static const char *fbcon_startup(void)
916{
917 const char *display_desc = "frame buffer device";
918 struct display *p = &fb_display[fg_console];
919 struct vc_data *vc = vc_cons[fg_console].d;
2f4516db 920 const struct font_desc *font = NULL;
1da177e4
LT		 921 struct module *owner;
922 struct fb_info *info = NULL;
923 struct fbcon_ops *ops;
924 int rows, cols;
1da177e4 925
1da177e4
LT		 926 /*
927 * If num_registered_fb is zero, this is a call for the dummy part.
928 * The frame buffer devices weren't initialized yet.
929 */
930 if (!num_registered_fb || info_idx == -1)
931 return display_desc;
932 /*
933 * Instead of blindly using registered_fb[0], we use info_idx, set by
934 * fb_console_init();
935 */
936 info = registered_fb[info_idx];
937 if (!info)
938 return NULL;
939
940 owner = info->fbops->owner;
941 if (!try_module_get(owner))
942 return NULL;
943 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
944 module_put(owner);
945 return NULL;
946 }
947
a39bc34e 948 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 949 if (!ops) {
950 module_put(owner);
951 return NULL;
952 }
953
1da177e4
LT		 954 ops->currcon = -1;
955 ops->graphics = 1;
e4fc2761 956 ops->cur_rotate = -1;
a1e533ec 957 ops->cur_blink_jiffies = HZ / 5;
1da177e4 958 info->fbcon_par = ops;
2428e59b 959 p->con_rotate = initial_rotation;
b73deed3 960 set_blitting_type(vc, info);
1da177e4
LT		 961
962 if (info->fix.type != FB_TYPE_TEXT) {
963 if (fbcon_softback_size) {
964 if (!softback_buf) {
965 softback_buf =
966 (unsigned long)
967 kmalloc(fbcon_softback_size,
968 GFP_KERNEL);
969 if (!softback_buf) {
970 fbcon_softback_size = 0;
971 softback_top = 0;
972 }
973 }
974 } else {
975 if (softback_buf) {
976 kfree((void *) softback_buf);
977 softback_buf = 0;
978 softback_top = 0;
979 }
980 }
981 if (softback_buf)
982 softback_in = softback_top = softback_curr =
983 softback_buf;
984 softback_lines = 0;
985 }
986
987 /* Setup default font */
ae128786 988 if (!p->fontdata && !vc->vc_font.data) {
1da177e4
LT		 989 if (!fontname[0] || !(font = find_font(fontname)))
990 font = get_default_font(info->var.xres,
2d2699d9
AD		 991 info->var.yres,
992 info->pixmap.blit_x,
993 info->pixmap.blit_y);
1da177e4
LT		 994 vc->vc_font.width = font->width;
995 vc->vc_font.height = font->height;
2f4516db 996 vc->vc_font.data = (void *)(p->fontdata = font->data);
1da177e4 997 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
ae128786
DA		 998 } else {
999 p->fontdata = vc->vc_font.data;
1da177e4
LT		 1000 }
1001
e4fc2761
AD		 1002 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1003 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1004 cols /= vc->vc_font.width;
1005 rows /= vc->vc_font.height;
1da177e4
LT		 1006 vc_resize(vc, cols, rows);
1007
1008 DPRINTK("mode: %s\n", info->fix.id);
1009 DPRINTK("visual: %d\n", info->fix.visual);
1010 DPRINTK("res: %dx%d-%d\n", info->var.xres,
1011 info->var.yres,
1012 info->var.bits_per_pixel);
1013
88fb2c6e 1014 fbcon_add_cursor_timer(info);
e614b18d 1015 fbcon_has_exited = 0;
1da177e4
LT		 1016 return display_desc;
1017}
1018
1019static void fbcon_init(struct vc_data *vc, int init)
1020{
1021 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1022 struct fbcon_ops *ops;
1023 struct vc_data **default_mode = vc->vc_display_fg;
1024 struct vc_data *svc = *default_mode;
1025 struct display *t, *p = &fb_display[vc->vc_num];
1026 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
0fcf6ada 1027 int cap, ret;
1da177e4
LT		 1028
1029 if (info_idx == -1 || info == NULL)
1030 return;
306958e8
AB		 1031
1032 cap = info->flags;
1033
1da177e4
LT		 1034 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1035 (info->fix.type == FB_TYPE_TEXT))
1036 logo = 0;
1037
1da177e4
LT		 1038 if (var_to_display(p, &info->var, info))
1039 return;
1040
d1baa4ff
AD		 1041 if (!info->fbcon_par)
1042 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
1043
1da177e4
LT		 1044 /* If we are not the first console on this
1045 fb, copy the font from that console */
e614b18d
AD		 1046 t = &fb_display[fg_console];
1047 if (!p->fontdata) {
1048 if (t->fontdata) {
1049 struct vc_data *fvc = vc_cons[fg_console].d;
1050
1051 vc->vc_font.data = (void *)(p->fontdata =
1052 fvc->vc_font.data);
1053 vc->vc_font.width = fvc->vc_font.width;
1054 vc->vc_font.height = fvc->vc_font.height;
1055 p->userfont = t->userfont;
1056
1057 if (p->userfont)
1058 REFCOUNT(p->fontdata)++;
1059 } else {
1060 const struct font_desc *font = NULL;
1061
1062 if (!fontname[0] || !(font = find_font(fontname)))
1063 font = get_default_font(info->var.xres,
2d2699d9
AD		 1064 info->var.yres,
1065 info->pixmap.blit_x,
1066 info->pixmap.blit_y);
e614b18d
AD		 1067 vc->vc_font.width = font->width;
1068 vc->vc_font.height = font->height;
1069 vc->vc_font.data = (void *)(p->fontdata = font->data);
1070 vc->vc_font.charcount = 256; /* FIXME Need to
1071 support more fonts */
1072 }
1da177e4 1073 }
e614b18d 1074
1da177e4
LT		 1075 if (p->userfont)
1076 charcnt = FNTCHARCNT(p->fontdata);
e614b18d 1077
8fd4bd22 1078 vc->vc_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT);
b8c90945 1079 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1080 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1081 if (charcnt == 256) {
1082 vc->vc_hi_font_mask = 0;
1083 } else {
1084 vc->vc_hi_font_mask = 0x100;
1085 if (vc->vc_can_do_color)
1086 vc->vc_complement_mask <<= 1;
1087 }
1088
1089 if (!*svc->vc_uni_pagedir_loc)
1090 con_set_default_unimap(svc);
1091 if (!*vc->vc_uni_pagedir_loc)
1092 con_copy_unimap(vc, svc);
1093
e4fc2761 1094 ops = info->fbcon_par;
f235f664 1095 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
2428e59b 1096 p->con_rotate = initial_rotation;
b73deed3 1097 set_blitting_type(vc, info);
e4fc2761 1098
1da177e4
LT		 1099 cols = vc->vc_cols;
1100 rows = vc->vc_rows;
e4fc2761
AD		 1101 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1102 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1103 new_cols /= vc->vc_font.width;
1104 new_rows /= vc->vc_font.height;
1da177e4 1105
1da177e4
LT		 1106 /*
1107 * We must always set the mode. The mode of the previous console
1108 * driver could be in the same resolution but we are using different
1109 * hardware so we have to initialize the hardware.
1110 *
1111 * We need to do it in fbcon_init() to prevent screen corruption.
1112 */
6ca8dfd7 1113 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) {
1da177e4 1114 if (info->fbops->fb_set_par &&
0fcf6ada
FTS		 1115 !(ops->flags & FBCON_FLAGS_INIT)) {
1116 ret = info->fbops->fb_set_par(info);
1117
1118 if (ret)
1119 printk(KERN_ERR "fbcon_init: detected "
1120 "unhandled fb_set_par error, "
1121 "error code %d\n", ret);
1122 }
1123
1da177e4
LT		 1124 ops->flags |= FBCON_FLAGS_INIT;
1125 }
1126
1127 ops->graphics = 0;
1128
1129 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1130 !(cap & FBINFO_HWACCEL_DISABLED))
1131 p->scrollmode = SCROLL_MOVE;
1132 else /* default to something safe */
1133 p->scrollmode = SCROLL_REDRAW;
1134
1135 /*
1136 * ++guenther: console.c:vc_allocate() relies on initializing
1137 * vc_{cols,rows}, but we must not set those if we are only
1138 * resizing the console.
1139 */
0035fe00 1140 if (init) {
1da177e4
LT		 1141 vc->vc_cols = new_cols;
1142 vc->vc_rows = new_rows;
0035fe00
JW		 1143 } else
1144 vc_resize(vc, new_cols, new_rows);
1da177e4
LT		 1145
1146 if (logo)
1147 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1148
4d9c5b6e
AD		 1149 if (vc == svc && softback_buf)
1150 fbcon_update_softback(vc);
e4fc2761 1151
b73deed3 1152 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 1153 ops->rotate = FB_ROTATE_UR;
b73deed3 1154 set_blitting_type(vc, info);
e4fc2761
AD		 1155 }
1156
1a37d5f5 1157 ops->p = &fb_display[fg_console];
1da177e4
LT		 1158}
1159
ae128786 1160static void fbcon_free_font(struct display *p, bool freefont)
e614b18d 1161{
ae128786 1162 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
e614b18d
AD		 1163 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1164 p->fontdata = NULL;
1165 p->userfont = 0;
1166}
1167
98fc5814
TI		 1168static void set_vc_hi_font(struct vc_data *vc, bool set);
1169
1da177e4
LT		 1170static void fbcon_deinit(struct vc_data *vc)
1171{
1172 struct display *p = &fb_display[vc->vc_num];
e614b18d
AD		 1173 struct fb_info *info;
1174 struct fbcon_ops *ops;
1175 int idx;
ae128786 1176 bool free_font = true;
1da177e4 1177
e614b18d
AD		 1178 idx = con2fb_map[vc->vc_num];
1179
1180 if (idx == -1)
1181 goto finished;
1182
1183 info = registered_fb[idx];
1184
1185 if (!info)
1186 goto finished;
1187
ae128786
DA		 1188 if (info->flags & FBINFO_MISC_FIRMWARE)
1189 free_font = false;
e614b18d
AD		 1190 ops = info->fbcon_par;
1191
1192 if (!ops)
1193 goto finished;
1194
6ca8dfd7 1195 if (con_is_visible(vc))
e614b18d
AD		 1196 fbcon_del_cursor_timer(info);
1197
1198 ops->flags &= ~FBCON_FLAGS_INIT;
1199finished:
1200
ae128786 1201 fbcon_free_font(p, free_font);
e6637d54
MK		 1202 if (free_font)
1203 vc->vc_font.data = NULL;
ae128786 1204
98fc5814
TI		 1205 if (vc->vc_hi_font_mask)
1206 set_vc_hi_font(vc, false);
1207
e614b18d
AD		 1208 if (!con_is_bound(&fb_con))
1209 fbcon_exit();
1210
1211 return;
1da177e4
LT		 1212}
1213
1214/* ====================================================================== */
1215
1216/* fbcon_XXX routines - interface used by the world
1217 *
1218 * This system is now divided into two levels because of complications
1219 * caused by hardware scrolling. Top level functions:
1220 *
1221 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1222 *
1223 * handles y values in range [0, scr_height-1] that correspond to real
1224 * screen positions. y_wrap shift means that first line of bitmap may be
1225 * anywhere on this display. These functions convert lineoffsets to
1226 * bitmap offsets and deal with the wrap-around case by splitting blits.
1227 *
1228 * fbcon_bmove_physical_8() -- These functions fast implementations
1229 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1230 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1231 *
1232 * WARNING:
1233 *
1234 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1235 * Implies should only really hardware scroll in rows. Only reason for
1236 * restriction is simplicity & efficiency at the moment.
1237 */
1238
1da177e4
LT		 1239static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1240 int width)
1241{
1242 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1243 struct fbcon_ops *ops = info->fbcon_par;
1244
1245 struct display *p = &fb_display[vc->vc_num];
1246 u_int y_break;
1247
1248 if (fbcon_is_inactive(vc, info))
1249 return;
1250
1251 if (!height || !width)
1252 return;
1253
256fc0e5 1254 if (sy < vc->vc_top && vc->vc_top == logo_lines) {
c213ddf3 1255 vc->vc_top = 0;
256fc0e5
KM		 1256 /*
1257 * If the font dimensions are not an integral of the display
1258 * dimensions then the ops->clear below won't end up clearing
1259 * the margins. Call clear_margins here in case the logo
1260 * bitmap stretched into the margin area.
1261 */
1262 fbcon_clear_margins(vc, 0);
1263 }
c213ddf3 1264
1da177e4
LT		 1265 /* Split blits that cross physical y_wrap boundary */
1266
1267 y_break = p->vrows - p->yscroll;
1268 if (sy < y_break && sy + height - 1 >= y_break) {
1269 u_int b = y_break - sy;
1270 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1271 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1272 width);
1273 } else
1274 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1275}
1276
1277static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1278 int count, int ypos, int xpos)
1279{
1280 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1281 struct display *p = &fb_display[vc->vc_num];
1282 struct fbcon_ops *ops = info->fbcon_par;
1283
1284 if (!fbcon_is_inactive(vc, info))
1285 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1286 get_color(vc, info, scr_readw(s), 1),
1287 get_color(vc, info, scr_readw(s), 0));
1288}
1289
1290static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1291{
1292 unsigned short chr;
1293
1294 scr_writew(c, &chr);
1295 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1296}
1297
1298static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1299{
1300 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1301 struct fbcon_ops *ops = info->fbcon_par;
1302
1303 if (!fbcon_is_inactive(vc, info))
1304 ops->clear_margins(vc, info, bottom_only);
1305}
1306
1307static void fbcon_cursor(struct vc_data *vc, int mode)
1308{
1309 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1310 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1311 int y;
1312 int c = scr_readw((u16 *) vc->vc_pos);
1313
2a17d7e8
SD		 1314 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
1315
d1e23066 1316 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1da177e4
LT		 1317 return;
1318
a5edce42
TR		 1319 if (vc->vc_cursor_type & 0x10)
1320 fbcon_del_cursor_timer(info);
1321 else
acba9cd0
AD		 1322 fbcon_add_cursor_timer(info);
1323
1da177e4
LT		 1324 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1325 if (mode & CM_SOFTBACK) {
1326 mode &= ~CM_SOFTBACK;
1327 y = softback_lines;
1328 } else {
1329 if (softback_lines)
1330 fbcon_set_origin(vc);
1331 y = 0;
1332 }
1333
b73deed3 1334 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1da177e4 1335 get_color(vc, info, c, 0));
1da177e4
LT		 1336}
1337
1338static int scrollback_phys_max = 0;
1339static int scrollback_max = 0;
1340static int scrollback_current = 0;
1341
1da177e4 1342static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
d1baa4ff 1343 int unit)
1da177e4 1344{
d1baa4ff
AD		 1345 struct display *p, *t;
1346 struct vc_data **default_mode, *vc;
1347 struct vc_data *svc;
e4fc2761 1348 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1349 int rows, cols, charcnt = 256;
1350
d1baa4ff
AD		 1351 p = &fb_display[unit];
1352
1da177e4
LT		 1353 if (var_to_display(p, var, info))
1354 return;
d1baa4ff
AD		 1355
1356 vc = vc_cons[unit].d;
1357
1358 if (!vc)
1359 return;
1360
1361 default_mode = vc->vc_display_fg;
1362 svc = *default_mode;
1da177e4 1363 t = &fb_display[svc->vc_num];
d1baa4ff 1364
1da177e4 1365 if (!vc->vc_font.data) {
2f4516db 1366 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1da177e4
LT		 1367 vc->vc_font.width = (*default_mode)->vc_font.width;
1368 vc->vc_font.height = (*default_mode)->vc_font.height;
1369 p->userfont = t->userfont;
1370 if (p->userfont)
1371 REFCOUNT(p->fontdata)++;
1372 }
1373 if (p->userfont)
1374 charcnt = FNTCHARCNT(p->fontdata);
1375
b8c90945
AD		 1376 var->activate = FB_ACTIVATE_NOW;
1377 info->var.activate = var->activate;
e4fc2761
AD		 1378 var->yoffset = info->var.yoffset;
1379 var->xoffset = info->var.xoffset;
b8c90945 1380 fb_set_var(info, var);
e4fc2761 1381 ops->var = info->var;
b8c90945 1382 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1383 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1384 if (charcnt == 256) {
1385 vc->vc_hi_font_mask = 0;
1386 } else {
1387 vc->vc_hi_font_mask = 0x100;
1388 if (vc->vc_can_do_color)
1389 vc->vc_complement_mask <<= 1;
1390 }
1391
1392 if (!*svc->vc_uni_pagedir_loc)
1393 con_set_default_unimap(svc);
1394 if (!*vc->vc_uni_pagedir_loc)
1395 con_copy_unimap(vc, svc);
1396
e4fc2761
AD		 1397 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1398 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1399 cols /= vc->vc_font.width;
1400 rows /= vc->vc_font.height;
1da177e4 1401 vc_resize(vc, cols, rows);
e4fc2761 1402
6ca8dfd7 1403 if (con_is_visible(vc)) {
1da177e4 1404 update_screen(vc);
4d9c5b6e
AD		 1405 if (softback_buf)
1406 fbcon_update_softback(vc);
1da177e4
LT		 1407 }
1408}
1409
1410static __inline__ void ywrap_up(struct vc_data *vc, int count)
1411{
1412 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1413 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1414 struct display *p = &fb_display[vc->vc_num];
1415
1416 p->yscroll += count;
1417 if (p->yscroll >= p->vrows) /* Deal with wrap */
1418 p->yscroll -= p->vrows;
e4fc2761
AD		 1419 ops->var.xoffset = 0;
1420 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1421 ops->var.vmode |= FB_VMODE_YWRAP;
1422 ops->update_start(info);
1da177e4
LT		 1423 scrollback_max += count;
1424 if (scrollback_max > scrollback_phys_max)
1425 scrollback_max = scrollback_phys_max;
1426 scrollback_current = 0;
1427}
1428
1429static __inline__ void ywrap_down(struct vc_data *vc, int count)
1430{
1431 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1432 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1433 struct display *p = &fb_display[vc->vc_num];
1434
1435 p->yscroll -= count;
1436 if (p->yscroll < 0) /* Deal with wrap */
1437 p->yscroll += p->vrows;
e4fc2761
AD		 1438 ops->var.xoffset = 0;
1439 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1440 ops->var.vmode |= FB_VMODE_YWRAP;
1441 ops->update_start(info);
1da177e4
LT		 1442 scrollback_max -= count;
1443 if (scrollback_max < 0)
1444 scrollback_max = 0;
1445 scrollback_current = 0;
1446}
1447
1448static __inline__ void ypan_up(struct vc_data *vc, int count)
1449{
1450 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1451 struct display *p = &fb_display[vc->vc_num];
1452 struct fbcon_ops *ops = info->fbcon_par;
1453
1454 p->yscroll += count;
1455 if (p->yscroll > p->vrows - vc->vc_rows) {
1456 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1457 0, 0, 0, vc->vc_rows, vc->vc_cols);
1458 p->yscroll -= p->vrows - vc->vc_rows;
1459 }
e4fc2761
AD		 1460
1461 ops->var.xoffset = 0;
1462 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1463 ops->var.vmode &= ~FB_VMODE_YWRAP;
1464 ops->update_start(info);
1da177e4
LT		 1465 fbcon_clear_margins(vc, 1);
1466 scrollback_max += count;
1467 if (scrollback_max > scrollback_phys_max)
1468 scrollback_max = scrollback_phys_max;
1469 scrollback_current = 0;
1470}
1471
1472static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1473{
1474 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1475 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1476 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1477
1478 p->yscroll += count;
a39bc34e 1479
1da177e4
LT		 1480 if (p->yscroll > p->vrows - vc->vc_rows) {
1481 p->yscroll -= p->vrows - vc->vc_rows;
1da177e4 1482 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
a39bc34e 1483 }
e4fc2761
AD		 1484
1485 ops->var.xoffset = 0;
1486 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1487 ops->var.vmode &= ~FB_VMODE_YWRAP;
1488 ops->update_start(info);
1da177e4
LT		 1489 fbcon_clear_margins(vc, 1);
1490 scrollback_max += count;
1491 if (scrollback_max > scrollback_phys_max)
1492 scrollback_max = scrollback_phys_max;
1493 scrollback_current = 0;
1494}
1495
1496static __inline__ void ypan_down(struct vc_data *vc, int count)
1497{
1498 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1499 struct display *p = &fb_display[vc->vc_num];
1500 struct fbcon_ops *ops = info->fbcon_par;
1501
1502 p->yscroll -= count;
1503 if (p->yscroll < 0) {
1504 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1505 0, vc->vc_rows, vc->vc_cols);
1506 p->yscroll += p->vrows - vc->vc_rows;
1507 }
e4fc2761
AD		 1508
1509 ops->var.xoffset = 0;
1510 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1511 ops->var.vmode &= ~FB_VMODE_YWRAP;
1512 ops->update_start(info);
1da177e4
LT		 1513 fbcon_clear_margins(vc, 1);
1514 scrollback_max -= count;
1515 if (scrollback_max < 0)
1516 scrollback_max = 0;
1517 scrollback_current = 0;
1518}
1519
1520static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1521{
1522 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1523 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1524 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1525
1526 p->yscroll -= count;
a39bc34e 1527
1da177e4
LT		 1528 if (p->yscroll < 0) {
1529 p->yscroll += p->vrows - vc->vc_rows;
1da177e4 1530 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
a39bc34e 1531 }
e4fc2761
AD		 1532
1533 ops->var.xoffset = 0;
1534 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1535 ops->var.vmode &= ~FB_VMODE_YWRAP;
1536 ops->update_start(info);
1da177e4
LT		 1537 fbcon_clear_margins(vc, 1);
1538 scrollback_max -= count;
1539 if (scrollback_max < 0)
1540 scrollback_max = 0;
1541 scrollback_current = 0;
1542}
1543
1544static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1545 long delta)
1546{
1547 int count = vc->vc_rows;
1548 unsigned short *d, *s;
1549 unsigned long n;
1550 int line = 0;
1551
1552 d = (u16 *) softback_curr;
1553 if (d == (u16 *) softback_in)
1554 d = (u16 *) vc->vc_origin;
1555 n = softback_curr + delta * vc->vc_size_row;
1556 softback_lines -= delta;
1557 if (delta < 0) {
1558 if (softback_curr < softback_top && n < softback_buf) {
1559 n += softback_end - softback_buf;
1560 if (n < softback_top) {
1561 softback_lines -=
1562 (softback_top - n) / vc->vc_size_row;
1563 n = softback_top;
1564 }
1565 } else if (softback_curr >= softback_top
1566 && n < softback_top) {
1567 softback_lines -=
1568 (softback_top - n) / vc->vc_size_row;
1569 n = softback_top;
1570 }
1571 } else {
1572 if (softback_curr > softback_in && n >= softback_end) {
1573 n += softback_buf - softback_end;
1574 if (n > softback_in) {
1575 n = softback_in;
1576 softback_lines = 0;
1577 }
1578 } else if (softback_curr <= softback_in && n > softback_in) {
1579 n = softback_in;
1580 softback_lines = 0;
1581 }
1582 }
1583 if (n == softback_curr)
1584 return;
1585 softback_curr = n;
1586 s = (u16 *) softback_curr;
1587 if (s == (u16 *) softback_in)
1588 s = (u16 *) vc->vc_origin;
1589 while (count--) {
1590 unsigned short *start;
1591 unsigned short *le;
1592 unsigned short c;
1593 int x = 0;
1594 unsigned short attr = 1;
1595
1596 start = s;
1597 le = advance_row(s, 1);
1598 do {
1599 c = scr_readw(s);
1600 if (attr != (c & 0xff00)) {
1601 attr = c & 0xff00;
1602 if (s > start) {
1603 fbcon_putcs(vc, start, s - start,
1604 line, x);
1605 x += s - start;
1606 start = s;
1607 }
1608 }
1609 if (c == scr_readw(d)) {
1610 if (s > start) {
1611 fbcon_putcs(vc, start, s - start,
1612 line, x);
1613 x += s - start + 1;
1614 start = s + 1;
1615 } else {
1616 x++;
1617 start++;
1618 }
1619 }
1620 s++;
1621 d++;
1622 } while (s < le);
1623 if (s > start)
1624 fbcon_putcs(vc, start, s - start, line, x);
1625 line++;
1626 if (d == (u16 *) softback_end)
1627 d = (u16 *) softback_buf;
1628 if (d == (u16 *) softback_in)
1629 d = (u16 *) vc->vc_origin;
1630 if (s == (u16 *) softback_end)
1631 s = (u16 *) softback_buf;
1632 if (s == (u16 *) softback_in)
1633 s = (u16 *) vc->vc_origin;
1634 }
1635}
1636
1637static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1638 int line, int count, int dy)
1639{
1640 unsigned short *s = (unsigned short *)
1641 (vc->vc_origin + vc->vc_size_row * line);
1642
1643 while (count--) {
1644 unsigned short *start = s;
1645 unsigned short *le = advance_row(s, 1);
1646 unsigned short c;
1647 int x = 0;
1648 unsigned short attr = 1;
1649
1650 do {
1651 c = scr_readw(s);
1652 if (attr != (c & 0xff00)) {
1653 attr = c & 0xff00;
1654 if (s > start) {
1655 fbcon_putcs(vc, start, s - start,
1656 dy, x);
1657 x += s - start;
1658 start = s;
1659 }
1660 }
1661 console_conditional_schedule();
1662 s++;
1663 } while (s < le);
1664 if (s > start)
1665 fbcon_putcs(vc, start, s - start, dy, x);
1666 console_conditional_schedule();
1667 dy++;
1668 }
1669}
1670
bad07ff7
KH		 1671static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1672 struct display *p, int line, int count, int ycount)
1673{
1674 int offset = ycount * vc->vc_cols;
1675 unsigned short *d = (unsigned short *)
1676 (vc->vc_origin + vc->vc_size_row * line);
1677 unsigned short *s = d + offset;
1678 struct fbcon_ops *ops = info->fbcon_par;
1679
1680 while (count--) {
1681 unsigned short *start = s;
1682 unsigned short *le = advance_row(s, 1);
1683 unsigned short c;
1684 int x = 0;
1685
1686 do {
1687 c = scr_readw(s);
1688
1689 if (c == scr_readw(d)) {
1690 if (s > start) {
1691 ops->bmove(vc, info, line + ycount, x,
1692 line, x, 1, s-start);
1693 x += s - start + 1;
1694 start = s + 1;
1695 } else {
1696 x++;
1697 start++;
1698 }
1699 }
1700
1701 scr_writew(c, d);
1702 console_conditional_schedule();
1703 s++;
1704 d++;
1705 } while (s < le);
1706 if (s > start)
1707 ops->bmove(vc, info, line + ycount, x, line, x, 1,
1708 s-start);
1709 console_conditional_schedule();
1710 if (ycount > 0)
1711 line++;
1712 else {
1713 line--;
1714 /* NOTE: We subtract two lines from these pointers */
1715 s -= vc->vc_size_row;
1716 d -= vc->vc_size_row;
1717 }
1718 }
1719}
1720
1da177e4
LT		 1721static void fbcon_redraw(struct vc_data *vc, struct display *p,
1722 int line, int count, int offset)
1723{
1724 unsigned short *d = (unsigned short *)
1725 (vc->vc_origin + vc->vc_size_row * line);
1726 unsigned short *s = d + offset;
1727
1728 while (count--) {
1729 unsigned short *start = s;
1730 unsigned short *le = advance_row(s, 1);
1731 unsigned short c;
1732 int x = 0;
1733 unsigned short attr = 1;
1734
1735 do {
1736 c = scr_readw(s);
1737 if (attr != (c & 0xff00)) {
1738 attr = c & 0xff00;
1739 if (s > start) {
1740 fbcon_putcs(vc, start, s - start,
1741 line, x);
1742 x += s - start;
1743 start = s;
1744 }
1745 }
1746 if (c == scr_readw(d)) {
1747 if (s > start) {
1748 fbcon_putcs(vc, start, s - start,
1749 line, x);
1750 x += s - start + 1;
1751 start = s + 1;
1752 } else {
1753 x++;
1754 start++;
1755 }
1756 }
1757 scr_writew(c, d);
1758 console_conditional_schedule();
1759 s++;
1760 d++;
1761 } while (s < le);
1762 if (s > start)
1763 fbcon_putcs(vc, start, s - start, line, x);
1764 console_conditional_schedule();
1765 if (offset > 0)
1766 line++;
1767 else {
1768 line--;
1769 /* NOTE: We subtract two lines from these pointers */
1770 s -= vc->vc_size_row;
1771 d -= vc->vc_size_row;
1772 }
1773 }
1774}
1775
1776static inline void fbcon_softback_note(struct vc_data *vc, int t,
1777 int count)
1778{
1779 unsigned short *p;
1780
1781 if (vc->vc_num != fg_console)
1782 return;
1783 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1784
1785 while (count) {
1786 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1787 count--;
1788 p = advance_row(p, 1);
1789 softback_in += vc->vc_size_row;
1790 if (softback_in == softback_end)
1791 softback_in = softback_buf;
1792 if (softback_in == softback_top) {
1793 softback_top += vc->vc_size_row;
1794 if (softback_top == softback_end)
1795 softback_top = softback_buf;
1796 }
1797 }
1798 softback_curr = softback_in;
1799}
1800
d705ff38
JS		 1801static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
1802 enum con_scroll dir, unsigned int count)
1da177e4
LT		 1803{
1804 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1805 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1806 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1807
1808 if (fbcon_is_inactive(vc, info))
d705ff38 1809 return true;
1da177e4
LT		 1810
1811 fbcon_cursor(vc, CM_ERASE);
1812
1813 /*
1814 * ++Geert: Only use ywrap/ypan if the console is in text mode
1815 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1816 * whole screen (prevents flicker).
1817 */
1818
1819 switch (dir) {
1820 case SM_UP:
1821 if (count > vc->vc_rows) /* Maximum realistic size */
1822 count = vc->vc_rows;
1823 if (softback_top)
1824 fbcon_softback_note(vc, t, count);
1825 if (logo_shown >= 0)
1826 goto redraw_up;
1827 switch (p->scrollmode) {
1828 case SCROLL_MOVE:
bad07ff7
KH		 1829 fbcon_redraw_blit(vc, info, p, t, b - t - count,
1830 count);
1831 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1832 scr_memsetw((unsigned short *) (vc->vc_origin +
1833 vc->vc_size_row *
1834 (b - count)),
93f78da4 1835 vc->vc_video_erase_char,
bad07ff7 1836 vc->vc_size_row * count);
d705ff38 1837 return true;
1da177e4
LT		 1838 break;
1839
1840 case SCROLL_WRAP_MOVE:
1841 if (b - t - count > 3 * vc->vc_rows >> 2) {
1842 if (t > 0)
1843 fbcon_bmove(vc, 0, 0, count, 0, t,
1844 vc->vc_cols);
1845 ywrap_up(vc, count);
1846 if (vc->vc_rows - b > 0)
1847 fbcon_bmove(vc, b - count, 0, b, 0,
1848 vc->vc_rows - b,
1849 vc->vc_cols);
1850 } else if (info->flags & FBINFO_READS_FAST)
1851 fbcon_bmove(vc, t + count, 0, t, 0,
1852 b - t - count, vc->vc_cols);
1853 else
1854 goto redraw_up;
1855 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1856 break;
1857
1858 case SCROLL_PAN_REDRAW:
1859 if ((p->yscroll + count <=
1860 2 * (p->vrows - vc->vc_rows))
1861 && ((!scroll_partial && (b - t == vc->vc_rows))
1862 || (scroll_partial
1863 && (b - t - count >
1864 3 * vc->vc_rows >> 2)))) {
1865 if (t > 0)
1866 fbcon_redraw_move(vc, p, 0, t, count);
1867 ypan_up_redraw(vc, t, count);
1868 if (vc->vc_rows - b > 0)
26e780e8 1869 fbcon_redraw_move(vc, p, b,
1da177e4
LT		 1870 vc->vc_rows - b, b);
1871 } else
1872 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1873 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1874 break;
1875
1876 case SCROLL_PAN_MOVE:
1877 if ((p->yscroll + count <=
1878 2 * (p->vrows - vc->vc_rows))
1879 && ((!scroll_partial && (b - t == vc->vc_rows))
1880 || (scroll_partial
1881 && (b - t - count >
1882 3 * vc->vc_rows >> 2)))) {
1883 if (t > 0)
1884 fbcon_bmove(vc, 0, 0, count, 0, t,
1885 vc->vc_cols);
1886 ypan_up(vc, count);
1887 if (vc->vc_rows - b > 0)
1888 fbcon_bmove(vc, b - count, 0, b, 0,
1889 vc->vc_rows - b,
1890 vc->vc_cols);
1891 } else if (info->flags & FBINFO_READS_FAST)
1892 fbcon_bmove(vc, t + count, 0, t, 0,
1893 b - t - count, vc->vc_cols);
1894 else
1895 goto redraw_up;
1896 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1897 break;
1898
1899 case SCROLL_REDRAW:
1900 redraw_up:
1901 fbcon_redraw(vc, p, t, b - t - count,
1902 count * vc->vc_cols);
1903 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1904 scr_memsetw((unsigned short *) (vc->vc_origin +
1905 vc->vc_size_row *
1906 (b - count)),
93f78da4 1907 vc->vc_video_erase_char,
1da177e4 1908 vc->vc_size_row * count);
d705ff38 1909 return true;
1da177e4
LT		 1910 }
1911 break;
1912
1913 case SM_DOWN:
1914 if (count > vc->vc_rows) /* Maximum realistic size */
1915 count = vc->vc_rows;
e703ecc3
JB		 1916 if (logo_shown >= 0)
1917 goto redraw_down;
1da177e4
LT		 1918 switch (p->scrollmode) {
1919 case SCROLL_MOVE:
bad07ff7
KH		 1920 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1921 -count);
1922 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1923 scr_memsetw((unsigned short *) (vc->vc_origin +
1924 vc->vc_size_row *
1925 t),
93f78da4 1926 vc->vc_video_erase_char,
bad07ff7 1927 vc->vc_size_row * count);
d705ff38 1928 return true;
1da177e4
LT		 1929 break;
1930
1931 case SCROLL_WRAP_MOVE:
1932 if (b - t - count > 3 * vc->vc_rows >> 2) {
1933 if (vc->vc_rows - b > 0)
1934 fbcon_bmove(vc, b, 0, b - count, 0,
1935 vc->vc_rows - b,
1936 vc->vc_cols);
1937 ywrap_down(vc, count);
1938 if (t > 0)
1939 fbcon_bmove(vc, count, 0, 0, 0, t,
1940 vc->vc_cols);
1941 } else if (info->flags & FBINFO_READS_FAST)
1942 fbcon_bmove(vc, t, 0, t + count, 0,
1943 b - t - count, vc->vc_cols);
1944 else
1945 goto redraw_down;
1946 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1947 break;
1948
1949 case SCROLL_PAN_MOVE:
1950 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1951 && ((!scroll_partial && (b - t == vc->vc_rows))
1952 || (scroll_partial
1953 && (b - t - count >
1954 3 * vc->vc_rows >> 2)))) {
1955 if (vc->vc_rows - b > 0)
1956 fbcon_bmove(vc, b, 0, b - count, 0,
1957 vc->vc_rows - b,
1958 vc->vc_cols);
1959 ypan_down(vc, count);
1960 if (t > 0)
1961 fbcon_bmove(vc, count, 0, 0, 0, t,
1962 vc->vc_cols);
1963 } else if (info->flags & FBINFO_READS_FAST)
1964 fbcon_bmove(vc, t, 0, t + count, 0,
1965 b - t - count, vc->vc_cols);
1966 else
1967 goto redraw_down;
1968 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1969 break;
1970
1971 case SCROLL_PAN_REDRAW:
1972 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1973 && ((!scroll_partial && (b - t == vc->vc_rows))
1974 || (scroll_partial
1975 && (b - t - count >
1976 3 * vc->vc_rows >> 2)))) {
1977 if (vc->vc_rows - b > 0)
1978 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1979 b - count);
1980 ypan_down_redraw(vc, t, count);
1981 if (t > 0)
1982 fbcon_redraw_move(vc, p, count, t, 0);
1983 } else
1984 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1985 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1986 break;
1987
1988 case SCROLL_REDRAW:
1989 redraw_down:
1990 fbcon_redraw(vc, p, b - 1, b - t - count,
1991 -count * vc->vc_cols);
1992 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1993 scr_memsetw((unsigned short *) (vc->vc_origin +
1994 vc->vc_size_row *
1995 t),
93f78da4 1996 vc->vc_video_erase_char,
1da177e4 1997 vc->vc_size_row * count);
d705ff38 1998 return true;
1da177e4
LT		 1999 }
2000 }
d705ff38 2001 return false;
1da177e4
LT		 2002}
2003
2004
2005static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
2006 int height, int width)
2007{
2008 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2009 struct display *p = &fb_display[vc->vc_num];
2010
2011 if (fbcon_is_inactive(vc, info))
2012 return;
2013
2014 if (!width || !height)
2015 return;
2016
2017 /* Split blits that cross physical y_wrap case.
2018 * Pathological case involves 4 blits, better to use recursive
2019 * code rather than unrolled case
2020 *
2021 * Recursive invocations don't need to erase the cursor over and
2022 * over again, so we use fbcon_bmove_rec()
2023 */
2024 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2025 p->vrows - p->yscroll);
2026}
2027
2028static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
2029 int dy, int dx, int height, int width, u_int y_break)
2030{
2031 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2032 struct fbcon_ops *ops = info->fbcon_par;
2033 u_int b;
2034
2035 if (sy < y_break && sy + height > y_break) {
2036 b = y_break - sy;
2037 if (dy < sy) { /* Avoid trashing self */
2038 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2039 y_break);
2040 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2041 height - b, width, y_break);
2042 } else {
2043 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2044 height - b, width, y_break);
2045 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2046 y_break);
2047 }
2048 return;
2049 }
2050
2051 if (dy < y_break && dy + height > y_break) {
2052 b = y_break - dy;
2053 if (dy < sy) { /* Avoid trashing self */
2054 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2055 y_break);
2056 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2057 height - b, width, y_break);
2058 } else {
2059 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2060 height - b, width, y_break);
2061 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2062 y_break);
2063 }
2064 return;
2065 }
2066 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2067 height, width);
2068}
2069
def1be2d 2070static void updatescrollmode(struct display *p,
e4fc2761 2071 struct fb_info *info,
1da177e4
LT		 2072 struct vc_data *vc)
2073{
e4fc2761 2074 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2075 int fh = vc->vc_font.height;
2076 int cap = info->flags;
e4fc2761
AD		 2077 u16 t = 0;
2078 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2079 info->fix.xpanstep);
2080 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2081 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2082 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2083 info->var.xres_virtual);
2084 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2085 divides(ypan, vc->vc_font.height) && vyres > yres;
2086 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2087 divides(ywrap, vc->vc_font.height) &&
244ab72d
KP		 2088 divides(vc->vc_font.height, vyres) &&
2089 divides(vc->vc_font.height, yres);
1da177e4 2090 int reading_fast = cap & FBINFO_READS_FAST;
e4fc2761
AD		 2091 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2092 !(cap & FBINFO_HWACCEL_DISABLED);
2093 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2094 !(cap & FBINFO_HWACCEL_DISABLED);
2095
2096 p->vrows = vyres/fh;
2097 if (yres > (fh * (vc->vc_rows + 1)))
2098 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2099 if ((yres % fh) && (vyres % fh < yres % fh))
1da177e4
LT		 2100 p->vrows--;
2101
2102 if (good_wrap || good_pan) {
2103 if (reading_fast || fast_copyarea)
e4fc2761
AD		 2104 p->scrollmode = good_wrap ?
2105 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1da177e4
LT		 2106 else
2107 p->scrollmode = good_wrap ? SCROLL_REDRAW :
2108 SCROLL_PAN_REDRAW;
2109 } else {
2110 if (reading_fast || (fast_copyarea && !fast_imageblit))
2111 p->scrollmode = SCROLL_MOVE;
2112 else
2113 p->scrollmode = SCROLL_REDRAW;
2114 }
2115}
2116
2117static int fbcon_resize(struct vc_data *vc, unsigned int width,
e400b6ec 2118 unsigned int height, unsigned int user)
1da177e4
LT		 2119{
2120 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2121 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2122 struct display *p = &fb_display[vc->vc_num];
2123 struct fb_var_screeninfo var = info->var;
e4fc2761
AD		 2124 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2125
2126 virt_w = FBCON_SWAP(ops->rotate, width, height);
2127 virt_h = FBCON_SWAP(ops->rotate, height, width);
2128 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2129 vc->vc_font.height);
2130 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2131 vc->vc_font.width);
2132 var.xres = virt_w * virt_fw;
2133 var.yres = virt_h * virt_fh;
1da177e4
LT		 2134 x_diff = info->var.xres - var.xres;
2135 y_diff = info->var.yres - var.yres;
e4fc2761
AD		 2136 if (x_diff < 0 || x_diff > virt_fw ||
2137 y_diff < 0 || y_diff > virt_fh) {
9791d763 2138 const struct fb_videomode *mode;
1da177e4
LT		 2139
2140 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2141 mode = fb_find_best_mode(&var, &info->modelist);
2142 if (mode == NULL)
2143 return -EINVAL;
3084a895 2144 display_to_var(&var, p);
1da177e4 2145 fb_videomode_to_var(&var, mode);
3084a895 2146
e4fc2761 2147 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
1da177e4 2148 return -EINVAL;
1da177e4
LT		 2149
2150 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
6ca8dfd7 2151 if (con_is_visible(vc)) {
1da177e4
LT		 2152 var.activate = FB_ACTIVATE_NOW |
2153 FB_ACTIVATE_FORCE;
2154 fb_set_var(info, &var);
2155 }
2156 var_to_display(p, &info->var, info);
e4fc2761 2157 ops->var = info->var;
1da177e4
LT		 2158 }
2159 updatescrollmode(p, info, vc);
2160 return 0;
2161}
2162
2163static int fbcon_switch(struct vc_data *vc)
2164{
88fb2c6e 2165 struct fb_info *info, *old_info = NULL;
e4fc2761 2166 struct fbcon_ops *ops;
1da177e4
LT		 2167 struct display *p = &fb_display[vc->vc_num];
2168 struct fb_var_screeninfo var;
0fcf6ada 2169 int i, ret, prev_console, charcnt = 256;
1da177e4
LT		 2170
2171 info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2172 ops = info->fbcon_par;
1da177e4
LT		 2173
2174 if (softback_top) {
1da177e4
LT		 2175 if (softback_lines)
2176 fbcon_set_origin(vc);
2177 softback_top = softback_curr = softback_in = softback_buf;
2178 softback_lines = 0;
4d9c5b6e 2179 fbcon_update_softback(vc);
1da177e4
LT		 2180 }
2181
2182 if (logo_shown >= 0) {
2183 struct vc_data *conp2 = vc_cons[logo_shown].d;
2184
2185 if (conp2->vc_top == logo_lines
2186 && conp2->vc_bottom == conp2->vc_rows)
2187 conp2->vc_top = 0;
2188 logo_shown = FBCON_LOGO_CANSHOW;
2189 }
2190
e4fc2761 2191 prev_console = ops->currcon;
88fb2c6e
AD		 2192 if (prev_console != -1)
2193 old_info = registered_fb[con2fb_map[prev_console]];
1da177e4
LT		 2194 /*
2195 * FIXME: If we have multiple fbdev's loaded, we need to
2196 * update all info->currcon. Perhaps, we can place this
2197 * in a centralized structure, but this might break some
2198 * drivers.
2199 *
2200 * info->currcon = vc->vc_num;
2201 */
2202 for (i = 0; i < FB_MAX; i++) {
2203 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
e4fc2761 2204 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
1da177e4 2205
e4fc2761 2206 o->currcon = vc->vc_num;
1da177e4
LT		 2207 }
2208 }
2209 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2210 display_to_var(&var, p);
2211 var.activate = FB_ACTIVATE_NOW;
2212
2213 /*
2214 * make sure we don't unnecessarily trip the memcmp()
2215 * in fb_set_var()
2216 */
2217 info->var.activate = var.activate;
10732c35 2218 var.vmode |= info->var.vmode & ~FB_VMODE_MASK;
1da177e4 2219 fb_set_var(info, &var);
e4fc2761 2220 ops->var = info->var;
1da177e4 2221
39942fd8
KP		 2222 if (old_info != NULL && (old_info != info ||
2223 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
0fcf6ada
FTS		 2224 if (info->fbops->fb_set_par) {
2225 ret = info->fbops->fb_set_par(info);
2226
2227 if (ret)
2228 printk(KERN_ERR "fbcon_switch: detected "
2229 "unhandled fb_set_par error, "
2230 "error code %d\n", ret);
2231 }
a39bc34e 2232
5428b044 2233 if (old_info != info)
a39bc34e 2234 fbcon_del_cursor_timer(old_info);
88fb2c6e 2235 }
1da177e4 2236
212f2639
AD		 2237 if (fbcon_is_inactive(vc, info) ||
2238 ops->blank_state != FB_BLANK_UNBLANK)
2239 fbcon_del_cursor_timer(info);
2240 else
2241 fbcon_add_cursor_timer(info);
2242
b73deed3 2243 set_blitting_type(vc, info);
e4fc2761
AD		 2244 ops->cursor_reset = 1;
2245
b73deed3 2246 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 2247 ops->rotate = FB_ROTATE_UR;
b73deed3 2248 set_blitting_type(vc, info);
e4fc2761 2249 }
1da177e4 2250
b8c90945 2251 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4 2252 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
56f0d64d
AD		 2253
2254 if (p->userfont)
2255 charcnt = FNTCHARCNT(vc->vc_font.data);
2256
2257 if (charcnt > 256)
2258 vc->vc_complement_mask <<= 1;
2259
1da177e4
LT		 2260 updatescrollmode(p, info, vc);
2261
2262 switch (p->scrollmode) {
2263 case SCROLL_WRAP_MOVE:
2264 scrollback_phys_max = p->vrows - vc->vc_rows;
2265 break;
2266 case SCROLL_PAN_MOVE:
2267 case SCROLL_PAN_REDRAW:
2268 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2269 if (scrollback_phys_max < 0)
2270 scrollback_phys_max = 0;
2271 break;
2272 default:
2273 scrollback_phys_max = 0;
2274 break;
2275 }
e4fc2761 2276
1da177e4
LT		 2277 scrollback_max = 0;
2278 scrollback_current = 0;
4e1567d3
AD		 2279
2280 if (!fbcon_is_inactive(vc, info)) {
2281 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2282 ops->update_start(info);
2283 }
2284
1da177e4
LT		 2285 fbcon_set_palette(vc, color_table);
2286 fbcon_clear_margins(vc, 0);
2287
2288 if (logo_shown == FBCON_LOGO_DRAW) {
2289
2290 logo_shown = fg_console;
2291 /* This is protected above by initmem_freed */
9c44e5f6 2292 fb_show_logo(info, ops->rotate);
1da177e4
LT		 2293 update_region(vc,
2294 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2295 vc->vc_size_row * (vc->vc_bottom -
2296 vc->vc_top) / 2);
2297 return 0;
2298 }
2299 return 1;
2300}
2301
2302static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2303 int blank)
2304{
994efacd
RP		 2305 struct fb_event event;
2306
1da177e4
LT		 2307 if (blank) {
2308 unsigned short charmask = vc->vc_hi_font_mask ?
2309 0x1ff : 0xff;
2310 unsigned short oldc;
2311
2312 oldc = vc->vc_video_erase_char;
2313 vc->vc_video_erase_char &= charmask;
2314 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2315 vc->vc_video_erase_char = oldc;
2316 }
994efacd
RP		 2317
2318
513adb58
AR		 2319 if (!lock_fb_info(info))
2320 return;
994efacd
RP		 2321 event.info = info;
2322 event.data = &blank;
2323 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
513adb58 2324 unlock_fb_info(info);
1da177e4
LT		 2325}
2326
2327static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2328{
2329 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2330 struct fbcon_ops *ops = info->fbcon_par;
2331
2332 if (mode_switch) {
2333 struct fb_var_screeninfo var = info->var;
2334
2335 ops->graphics = 1;
2336
2337 if (!blank) {
2338 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2339 fb_set_var(info, &var);
2340 ops->graphics = 0;
e4fc2761 2341 ops->var = info->var;
f5c15d0b 2342 }
1da177e4
LT		 2343 }
2344
2345 if (!fbcon_is_inactive(vc, info)) {
2346 if (ops->blank_state != blank) {
2347 ops->blank_state = blank;
2348 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2349 ops->cursor_flash = (!blank);
2350
bca404af
DES		 2351 if (!(info->flags & FBINFO_MISC_USEREVENT))
2352 if (fb_blank(info, blank))
2353 fbcon_generic_blank(vc, info, blank);
1da177e4
LT		 2354 }
2355
88fb2c6e
AD		 2356 if (!blank)
2357 update_screen(vc);
2358 }
2359
4d8a2d98 2360 if (mode_switch || fbcon_is_inactive(vc, info) ||
212f2639 2361 ops->blank_state != FB_BLANK_UNBLANK)
88fb2c6e 2362 fbcon_del_cursor_timer(info);
212f2639
AD		 2363 else
2364 fbcon_add_cursor_timer(info);
1da177e4 2365
88fb2c6e 2366 return 0;
1da177e4
LT		 2367}
2368
d219adc1
JB		 2369static int fbcon_debug_enter(struct vc_data *vc)
2370{
2371 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2372 struct fbcon_ops *ops = info->fbcon_par;
2373
2374 ops->save_graphics = ops->graphics;
2375 ops->graphics = 0;
2376 if (info->fbops->fb_debug_enter)
2377 info->fbops->fb_debug_enter(info);
2378 fbcon_set_palette(vc, color_table);
2379 return 0;
2380}
2381
2382static int fbcon_debug_leave(struct vc_data *vc)
2383{
2384 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2385 struct fbcon_ops *ops = info->fbcon_par;
2386
2387 ops->graphics = ops->save_graphics;
2388 if (info->fbops->fb_debug_leave)
2389 info->fbops->fb_debug_leave(info);
2390 return 0;
2391}
2392
1da177e4
LT		 2393static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2394{
2395 u8 *fontdata = vc->vc_font.data;
2396 u8 *data = font->data;
2397 int i, j;
2398
2399 font->width = vc->vc_font.width;
2400 font->height = vc->vc_font.height;
2401 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2402 if (!font->data)
2403 return 0;
2404
2405 if (font->width <= 8) {
2406 j = vc->vc_font.height;
2407 for (i = 0; i < font->charcount; i++) {
2408 memcpy(data, fontdata, j);
2409 memset(data + j, 0, 32 - j);
2410 data += 32;
2411 fontdata += j;
2412 }
2413 } else if (font->width <= 16) {
2414 j = vc->vc_font.height * 2;
2415 for (i = 0; i < font->charcount; i++) {
2416 memcpy(data, fontdata, j);
2417 memset(data + j, 0, 64 - j);
2418 data += 64;
2419 fontdata += j;
2420 }
2421 } else if (font->width <= 24) {
2422 for (i = 0; i < font->charcount; i++) {
2423 for (j = 0; j < vc->vc_font.height; j++) {
2424 *data++ = fontdata[0];
2425 *data++ = fontdata[1];
2426 *data++ = fontdata[2];
2427 fontdata += sizeof(u32);
2428 }
2429 memset(data, 0, 3 * (32 - j));
2430 data += 3 * (32 - j);
2431 }
2432 } else {
2433 j = vc->vc_font.height * 4;
2434 for (i = 0; i < font->charcount; i++) {
2435 memcpy(data, fontdata, j);
2436 memset(data + j, 0, 128 - j);
2437 data += 128;
2438 fontdata += j;
2439 }
2440 }
2441 return 0;
2442}
2443
98fc5814
TI		 2444/* set/clear vc_hi_font_mask and update vc attrs accordingly */
2445static void set_vc_hi_font(struct vc_data *vc, bool set)
1da177e4 2446{
98fc5814 2447 if (!set) {
1da177e4
LT		 2448 vc->vc_hi_font_mask = 0;
2449 if (vc->vc_can_do_color) {
2450 vc->vc_complement_mask >>= 1;
2451 vc->vc_s_complement_mask >>= 1;
2452 }
2453
2454 /* ++Edmund: reorder the attribute bits */
2455 if (vc->vc_can_do_color) {
2456 unsigned short *cp =
2457 (unsigned short *) vc->vc_origin;
2458 int count = vc->vc_screenbuf_size / 2;
2459 unsigned short c;
2460 for (; count > 0; count--, cp++) {
2461 c = scr_readw(cp);
2462 scr_writew(((c & 0xfe00) >> 1) |
2463 (c & 0xff), cp);
2464 }
2465 c = vc->vc_video_erase_char;
2466 vc->vc_video_erase_char =
2467 ((c & 0xfe00) >> 1) | (c & 0xff);
2468 vc->vc_attr >>= 1;
2469 }
98fc5814 2470 } else {
1da177e4
LT		 2471 vc->vc_hi_font_mask = 0x100;
2472 if (vc->vc_can_do_color) {
2473 vc->vc_complement_mask <<= 1;
2474 vc->vc_s_complement_mask <<= 1;
2475 }
2476
2477 /* ++Edmund: reorder the attribute bits */
2478 {
2479 unsigned short *cp =
2480 (unsigned short *) vc->vc_origin;
2481 int count = vc->vc_screenbuf_size / 2;
2482 unsigned short c;
2483 for (; count > 0; count--, cp++) {
2484 unsigned short newc;
2485 c = scr_readw(cp);
2486 if (vc->vc_can_do_color)
2487 newc =
2488 ((c & 0xff00) << 1) | (c &
2489 0xff);
2490 else
2491 newc = c & ~0x100;
2492 scr_writew(newc, cp);
2493 }
2494 c = vc->vc_video_erase_char;
2495 if (vc->vc_can_do_color) {
2496 vc->vc_video_erase_char =
2497 ((c & 0xff00) << 1) | (c & 0xff);
2498 vc->vc_attr <<= 1;
93f78da4 2499 } else
1da177e4
LT		 2500 vc->vc_video_erase_char = c & ~0x100;
2501 }
1da177e4 2502 }
98fc5814
TI		 2503}
2504
2505static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2506 const u8 * data, int userfont)
2507{
2508 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2509 struct fbcon_ops *ops = info->fbcon_par;
2510 struct display *p = &fb_display[vc->vc_num];
2511 int resize;
2512 int cnt;
2513 char *old_data = NULL;
2514
2515 if (con_is_visible(vc) && softback_lines)
2516 fbcon_set_origin(vc);
2517
2518 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2519 if (p->userfont)
2520 old_data = vc->vc_font.data;
2521 if (userfont)
2522 cnt = FNTCHARCNT(data);
2523 else
2524 cnt = 256;
2525 vc->vc_font.data = (void *)(p->fontdata = data);
2526 if ((p->userfont = userfont))
2527 REFCOUNT(data)++;
2528 vc->vc_font.width = w;
2529 vc->vc_font.height = h;
2530 if (vc->vc_hi_font_mask && cnt == 256)
2531 set_vc_hi_font(vc, false);
2532 else if (!vc->vc_hi_font_mask && cnt == 512)
2533 set_vc_hi_font(vc, true);
1da177e4
LT		 2534
2535 if (resize) {
e4fc2761
AD		 2536 int cols, rows;
2537
2538 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2539 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2540 cols /= w;
2541 rows /= h;
2542 vc_resize(vc, cols, rows);
6ca8dfd7 2543 if (con_is_visible(vc) && softback_buf)
4d9c5b6e 2544 fbcon_update_softback(vc);
6ca8dfd7 2545 } else if (con_is_visible(vc)
1da177e4
LT		 2546 && vc->vc_mode == KD_TEXT) {
2547 fbcon_clear_margins(vc, 0);
2548 update_screen(vc);
2549 }
2550
2551 if (old_data && (--REFCOUNT(old_data) == 0))
2552 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2553 return 0;
2554}
2555
2556static int fbcon_copy_font(struct vc_data *vc, int con)
2557{
2558 struct display *od = &fb_display[con];
2559 struct console_font *f = &vc->vc_font;
2560
2561 if (od->fontdata == f->data)
2562 return 0; /* already the same font... */
2563 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2564}
2565
2566/*
2567 * User asked to set font; we are guaranteed that
2568 * a) width and height are in range 1..32
2569 * b) charcount does not exceed 512
2570 * but lets not assume that, since someone might someday want to use larger
2571 * fonts. And charcount of 512 is small for unicode support.
2572 *
2573 * However, user space gives the font in 32 rows , regardless of
2574 * actual font height. So a new API is needed if support for larger fonts
2575 * is ever implemented.
2576 */
2577
2578static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2579{
2d2699d9 2580 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1da177e4
LT		 2581 unsigned charcount = font->charcount;
2582 int w = font->width;
2583 int h = font->height;
2584 int size;
2585 int i, csum;
2586 u8 *new_data, *data = font->data;
2587 int pitch = (font->width+7) >> 3;
2588
2589 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2590 * If not this check should be changed to charcount < 256 */
2591 if (charcount != 256 && charcount != 512)
2592 return -EINVAL;
2593
2d2699d9
AD		 2594 /* Make sure drawing engine can handle the font */
2595 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2596 !(info->pixmap.blit_y & (1 << (font->height - 1))))
2597 return -EINVAL;
38b4982c
AD		 2598
2599 /* Make sure driver can handle the font length */
2600 if (fbcon_invalid_charcount(info, charcount))
2601 return -EINVAL;
2d2699d9 2602
1da177e4
LT		 2603 size = h * pitch * charcount;
2604
2605 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2606
2607 if (!new_data)
2608 return -ENOMEM;
2609
2610 new_data += FONT_EXTRA_WORDS * sizeof(int);
2611 FNTSIZE(new_data) = size;
2612 FNTCHARCNT(new_data) = charcount;
2613 REFCOUNT(new_data) = 0; /* usage counter */
2614 for (i=0; i< charcount; i++) {
2615 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2616 }
2617
2618 /* Since linux has a nice crc32 function use it for counting font
2619 * checksums. */
2620 csum = crc32(0, new_data, size);
2621
2622 FNTSUM(new_data) = csum;
2623 /* Check if the same font is on some other console already */
e614b18d 2624 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 2625 struct vc_data *tmp = vc_cons[i].d;
2626
2627 if (fb_display[i].userfont &&
2628 fb_display[i].fontdata &&
2629 FNTSUM(fb_display[i].fontdata) == csum &&
2630 FNTSIZE(fb_display[i].fontdata) == size &&
2631 tmp->vc_font.width == w &&
2632 !memcmp(fb_display[i].fontdata, new_data, size)) {
2633 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2f4516db 2634 new_data = (u8 *)fb_display[i].fontdata;
1da177e4
LT		 2635 break;
2636 }
2637 }
2638 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2639}
2640
2641static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2642{
2643 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2f4516db 2644 const struct font_desc *f;
1da177e4
LT		 2645
2646 if (!name)
2d2699d9
AD		 2647 f = get_default_font(info->var.xres, info->var.yres,
2648 info->pixmap.blit_x, info->pixmap.blit_y);
1da177e4
LT		 2649 else if (!(f = find_font(name)))
2650 return -ENOENT;
2651
2652 font->width = f->width;
2653 font->height = f->height;
2654 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2655}
2656
2657static u16 palette_red[16];
2658static u16 palette_green[16];
2659static u16 palette_blue[16];
2660
2661static struct fb_cmap palette_cmap = {
2662 0, 16, palette_red, palette_green, palette_blue, NULL
2663};
2664
709280da 2665static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table)
1da177e4
LT		 2666{
2667 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2668 int i, j, k, depth;
2669 u8 val;
2670
2671 if (fbcon_is_inactive(vc, info))
709280da 2672 return;
1da177e4 2673
6ca8dfd7 2674 if (!con_is_visible(vc))
709280da 2675 return;
1da177e4 2676
b8c90945 2677 depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 2678 if (depth > 3) {
2679 for (i = j = 0; i < 16; i++) {
2680 k = table[i];
2681 val = vc->vc_palette[j++];
2682 palette_red[k] = (val << 8) | val;
2683 val = vc->vc_palette[j++];
2684 palette_green[k] = (val << 8) | val;
2685 val = vc->vc_palette[j++];
2686 palette_blue[k] = (val << 8) | val;
2687 }
2688 palette_cmap.len = 16;
2689 palette_cmap.start = 0;
2690 /*
2691 * If framebuffer is capable of less than 16 colors,
2692 * use default palette of fbcon.
2693 */
2694 } else
2695 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2696
709280da 2697 fb_set_cmap(&palette_cmap, info);
1da177e4
LT		 2698}
2699
2700static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2701{
2702 unsigned long p;
2703 int line;
2704
2705 if (vc->vc_num != fg_console || !softback_lines)
2706 return (u16 *) (vc->vc_origin + offset);
2707 line = offset / vc->vc_size_row;
2708 if (line >= softback_lines)
2709 return (u16 *) (vc->vc_origin + offset -
2710 softback_lines * vc->vc_size_row);
2711 p = softback_curr + offset;
2712 if (p >= softback_end)
2713 p += softback_buf - softback_end;
2714 return (u16 *) p;
2715}
2716
2717static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2718 int *px, int *py)
2719{
2720 unsigned long ret;
2721 int x, y;
2722
2723 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2724 unsigned long offset = (pos - vc->vc_origin) / 2;
2725
2726 x = offset % vc->vc_cols;
2727 y = offset / vc->vc_cols;
2728 if (vc->vc_num == fg_console)
2729 y += softback_lines;
2730 ret = pos + (vc->vc_cols - x) * 2;
2731 } else if (vc->vc_num == fg_console && softback_lines) {
2732 unsigned long offset = pos - softback_curr;
2733
2734 if (pos < softback_curr)
2735 offset += softback_end - softback_buf;
2736 offset /= 2;
2737 x = offset % vc->vc_cols;
2738 y = offset / vc->vc_cols;
2739 ret = pos + (vc->vc_cols - x) * 2;
2740 if (ret == softback_end)
2741 ret = softback_buf;
2742 if (ret == softback_in)
2743 ret = vc->vc_origin;
2744 } else {
2745 /* Should not happen */
2746 x = y = 0;
2747 ret = vc->vc_origin;
2748 }
2749 if (px)
2750 *px = x;
2751 if (py)
2752 *py = y;
2753 return ret;
2754}
2755
2756/* As we might be inside of softback, we may work with non-contiguous buffer,
2757 that's why we have to use a separate routine. */
2758static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2759{
2760 while (cnt--) {
2761 u16 a = scr_readw(p);
2762 if (!vc->vc_can_do_color)
2763 a ^= 0x0800;
2764 else if (vc->vc_hi_font_mask == 0x100)
2765 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2766 (((a) & 0x0e00) << 4);
2767 else
2768 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2769 (((a) & 0x0700) << 4);
2770 scr_writew(a, p++);
2771 if (p == (u16 *) softback_end)
2772 p = (u16 *) softback_buf;
2773 if (p == (u16 *) softback_in)
2774 p = (u16 *) vc->vc_origin;
2775 }
2776}
2777
97293de9 2778static void fbcon_scrolldelta(struct vc_data *vc, int lines)
1da177e4
LT		 2779{
2780 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
e4fc2761 2781 struct fbcon_ops *ops = info->fbcon_par;
2c6cc35c 2782 struct display *disp = &fb_display[fg_console];
1da177e4
LT		 2783 int offset, limit, scrollback_old;
2784
2785 if (softback_top) {
2786 if (vc->vc_num != fg_console)
97293de9 2787 return;
1da177e4 2788 if (vc->vc_mode != KD_TEXT || !lines)
97293de9 2789 return;
1da177e4
LT		 2790 if (logo_shown >= 0) {
2791 struct vc_data *conp2 = vc_cons[logo_shown].d;
2792
2793 if (conp2->vc_top == logo_lines
2794 && conp2->vc_bottom == conp2->vc_rows)
2795 conp2->vc_top = 0;
2796 if (logo_shown == vc->vc_num) {
2797 unsigned long p, q;
2798 int i;
2799
2800 p = softback_in;
2801 q = vc->vc_origin +
2802 logo_lines * vc->vc_size_row;
2803 for (i = 0; i < logo_lines; i++) {
2804 if (p == softback_top)
2805 break;
2806 if (p == softback_buf)
2807 p = softback_end;
2808 p -= vc->vc_size_row;
2809 q -= vc->vc_size_row;
2810 scr_memcpyw((u16 *) q, (u16 *) p,
2811 vc->vc_size_row);
2812 }
308af929 2813 softback_in = softback_curr = p;
1da177e4
LT		 2814 update_region(vc, vc->vc_origin,
2815 logo_lines * vc->vc_cols);
2816 }
2817 logo_shown = FBCON_LOGO_CANSHOW;
2818 }
2819 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2c6cc35c 2820 fbcon_redraw_softback(vc, disp, lines);
1da177e4 2821 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
97293de9 2822 return;
1da177e4
LT		 2823 }
2824
2825 if (!scrollback_phys_max)
97293de9 2826 return;
1da177e4
LT		 2827
2828 scrollback_old = scrollback_current;
2829 scrollback_current -= lines;
2830 if (scrollback_current < 0)
2831 scrollback_current = 0;
2832 else if (scrollback_current > scrollback_max)
2833 scrollback_current = scrollback_max;
2834 if (scrollback_current == scrollback_old)
97293de9 2835 return;
1da177e4
LT		 2836
2837 if (fbcon_is_inactive(vc, info))
97293de9 2838 return;
1da177e4
LT		 2839
2840 fbcon_cursor(vc, CM_ERASE);
2841
2c6cc35c
MS		 2842 offset = disp->yscroll - scrollback_current;
2843 limit = disp->vrows;
2844 switch (disp->scrollmode) {
1da177e4
LT		 2845 case SCROLL_WRAP_MOVE:
2846 info->var.vmode |= FB_VMODE_YWRAP;
2847 break;
2848 case SCROLL_PAN_MOVE:
2849 case SCROLL_PAN_REDRAW:
2850 limit -= vc->vc_rows;
2851 info->var.vmode &= ~FB_VMODE_YWRAP;
2852 break;
2853 }
2854 if (offset < 0)
2855 offset += limit;
2856 else if (offset >= limit)
2857 offset -= limit;
e4fc2761
AD		 2858
2859 ops->var.xoffset = 0;
2860 ops->var.yoffset = offset * vc->vc_font.height;
2861 ops->update_start(info);
2862
1da177e4
LT		 2863 if (!scrollback_current)
2864 fbcon_cursor(vc, CM_DRAW);
1da177e4
LT		 2865}
2866
2867static int fbcon_set_origin(struct vc_data *vc)
2868{
2869 if (softback_lines)
2870 fbcon_scrolldelta(vc, softback_lines);
2871 return 0;
2872}
2873
2874static void fbcon_suspended(struct fb_info *info)
2875{
2876 struct vc_data *vc = NULL;
2877 struct fbcon_ops *ops = info->fbcon_par;
2878
2879 if (!ops || ops->currcon < 0)
2880 return;
2881 vc = vc_cons[ops->currcon].d;
2882
2883 /* Clear cursor, restore saved data */
2884 fbcon_cursor(vc, CM_ERASE);
2885}
2886
2887static void fbcon_resumed(struct fb_info *info)
2888{
2889 struct vc_data *vc;
2890 struct fbcon_ops *ops = info->fbcon_par;
2891
2892 if (!ops || ops->currcon < 0)
2893 return;
2894 vc = vc_cons[ops->currcon].d;
2895
2896 update_screen(vc);
2897}
2898
2899static void fbcon_modechanged(struct fb_info *info)
2900{
2901 struct fbcon_ops *ops = info->fbcon_par;
2902 struct vc_data *vc;
2903 struct display *p;
2904 int rows, cols;
2905
2906 if (!ops || ops->currcon < 0)
2907 return;
2908 vc = vc_cons[ops->currcon].d;
e4fc2761
AD		 2909 if (vc->vc_mode != KD_TEXT ||
2910 registered_fb[con2fb_map[ops->currcon]] != info)
1da177e4
LT		 2911 return;
2912
2913 p = &fb_display[vc->vc_num];
b73deed3 2914 set_blitting_type(vc, info);
1da177e4 2915
6ca8dfd7 2916 if (con_is_visible(vc)) {
1da177e4 2917 var_to_display(p, &info->var, info);
e4fc2761
AD		 2918 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2919 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2920 cols /= vc->vc_font.width;
2921 rows /= vc->vc_font.height;
1da177e4
LT		 2922 vc_resize(vc, cols, rows);
2923 updatescrollmode(p, info, vc);
2924 scrollback_max = 0;
2925 scrollback_current = 0;
4e1567d3
AD		 2926
2927 if (!fbcon_is_inactive(vc, info)) {
2928 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2929 ops->update_start(info);
2930 }
2931
1da177e4
LT		 2932 fbcon_set_palette(vc, color_table);
2933 update_screen(vc);
4d9c5b6e
AD		 2934 if (softback_buf)
2935 fbcon_update_softback(vc);
1da177e4
LT		 2936 }
2937}
2938
7726e9e1
AD		 2939static void fbcon_set_all_vcs(struct fb_info *info)
2940{
2941 struct fbcon_ops *ops = info->fbcon_par;
2942 struct vc_data *vc;
2943 struct display *p;
95d67bb1 2944 int i, rows, cols, fg = -1;
7726e9e1
AD		 2945
2946 if (!ops || ops->currcon < 0)
2947 return;
2948
e614b18d 2949 for (i = first_fb_vc; i <= last_fb_vc; i++) {
7726e9e1
AD		 2950 vc = vc_cons[i].d;
2951 if (!vc || vc->vc_mode != KD_TEXT ||
2952 registered_fb[con2fb_map[i]] != info)
2953 continue;
2954
6ca8dfd7 2955 if (con_is_visible(vc)) {
95d67bb1
AD		 2956 fg = i;
2957 continue;
2958 }
2959
7726e9e1 2960 p = &fb_display[vc->vc_num];
b73deed3 2961 set_blitting_type(vc, info);
7726e9e1 2962 var_to_display(p, &info->var, info);
232fb69a
ON		 2963 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2964 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
e4fc2761
AD		 2965 cols /= vc->vc_font.width;
2966 rows /= vc->vc_font.height;
7726e9e1 2967 vc_resize(vc, cols, rows);
7726e9e1 2968 }
04a2fe57 2969
95d67bb1
AD		 2970 if (fg != -1)
2971 fbcon_modechanged(info);
7726e9e1
AD		 2972}
2973
1da177e4
LT		 2974static int fbcon_mode_deleted(struct fb_info *info,
2975 struct fb_videomode *mode)
2976{
2977 struct fb_info *fb_info;
2978 struct display *p;
2979 int i, j, found = 0;
2980
2981 /* before deletion, ensure that mode is not in use */
2982 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2983 j = con2fb_map[i];
2984 if (j == -1)
2985 continue;
2986 fb_info = registered_fb[j];
2987 if (fb_info != info)
2988 continue;
2989 p = &fb_display[i];
2990 if (!p || !p->mode)
2991 continue;
2992 if (fb_mode_is_equal(p->mode, mode)) {
2993 found = 1;
2994 break;
2995 }
2996 }
2997 return found;
2998}
2999
cfafca80
JB		 3000#ifdef CONFIG_VT_HW_CONSOLE_BINDING
3001static int fbcon_unbind(void)
3002{
3003 int ret;
3004
e93a9a86 3005 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc,
cfafca80 3006 fbcon_is_default);
2ddce3fd
IA		 3007
3008 if (!ret)
3009 fbcon_has_console_bind = 0;
3010
cfafca80
JB		 3011 return ret;
3012}
3013#else
3014static inline int fbcon_unbind(void)
3015{
3016 return -EINVAL;
3017}
3018#endif /* CONFIG_VT_HW_CONSOLE_BINDING */
3019
054430e7 3020/* called with console_lock held */
cfafca80
JB		 3021static int fbcon_fb_unbind(int idx)
3022{
3023 int i, new_idx = -1, ret = 0;
3024
2ddce3fd
IA		 3025 if (!fbcon_has_console_bind)
3026 return 0;
3027
cfafca80
JB		 3028 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3029 if (con2fb_map[i] != idx &&
3030 con2fb_map[i] != -1) {
3031 new_idx = i;
3032 break;
3033 }
3034 }
3035
3036 if (new_idx != -1) {
3037 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3038 if (con2fb_map[i] == idx)
3039 set_con2fb_map(i, new_idx, 0);
3040 }
5f4dc28b
KP		 3041 } else {
3042 struct fb_info *info = registered_fb[idx];
3043
3044 /* This is sort of like set_con2fb_map, except it maps
3045 * the consoles to no device and then releases the
3046 * oldinfo to free memory and cancel the cursor blink
3047 * timer. I can imagine this just becoming part of
3048 * set_con2fb_map where new_idx is -1
3049 */
3050 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3051 if (con2fb_map[i] == idx) {
3052 con2fb_map[i] = -1;
3053 if (!search_fb_in_map(idx)) {
3054 ret = con2fb_release_oldinfo(vc_cons[i].d,
3055 info, NULL, i,
3056 idx, 0);
3057 if (ret) {
3058 con2fb_map[i] = idx;
3059 return ret;
3060 }
3061 }
3062 }
3063 }
cfafca80 3064 ret = fbcon_unbind();
5f4dc28b 3065 }
cfafca80
JB		 3066
3067 return ret;
3068}
3069
054430e7 3070/* called with console_lock held */
623e71b0 3071static int fbcon_fb_unregistered(struct fb_info *info)
e614b18d 3072{
66c1ca01 3073 int i, idx;
e614b18d 3074
66c1ca01 3075 idx = info->node;
e614b18d
AD		 3076 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3077 if (con2fb_map[i] == idx)
3078 con2fb_map[i] = -1;
3079 }
3080
3081 if (idx == info_idx) {
3082 info_idx = -1;
3083
3084 for (i = 0; i < FB_MAX; i++) {
3085 if (registered_fb[i] != NULL) {
3086 info_idx = i;
3087 break;
3088 }
3089 }
3090 }
3091
3092 if (info_idx != -1) {
3093 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3094 if (con2fb_map[i] == -1)
3095 con2fb_map[i] = info_idx;
3096 }
3097 }
3098
623e71b0
AD		 3099 if (primary_device == idx)
3100 primary_device = -1;
3101
66c1ca01 3102 if (!num_registered_fb)
e93a9a86 3103 do_unregister_con_driver(&fb_con);
66c1ca01 3104
623e71b0
AD		 3105 return 0;
3106}
3107
054430e7 3108/* called with console_lock held */
6a9ee8af
DA		 3109static void fbcon_remap_all(int idx)
3110{
3111 int i;
3112 for (i = first_fb_vc; i <= last_fb_vc; i++)
3113 set_con2fb_map(i, idx, 0);
3114
3115 if (con_is_bound(&fb_con)) {
3116 printk(KERN_INFO "fbcon: Remapping primary device, "
3117 "fb%i, to tty %i-%i\n", idx,
3118 first_fb_vc + 1, last_fb_vc + 1);
3119 info_idx = idx;
3120 }
3121}
3122
623e71b0 3123#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
afd1db16 3124static void fbcon_select_primary(struct fb_info *info)
623e71b0 3125{
623e71b0
AD		 3126 if (!map_override && primary_device == -1 &&
3127 fb_is_primary_device(info)) {
afd1db16 3128 int i;
623e71b0 3129
afd1db16
AD		 3130 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
3131 info->fix.id, info->node);
623e71b0
AD		 3132 primary_device = info->node;
3133
afd1db16 3134 for (i = first_fb_vc; i <= last_fb_vc; i++)
623e71b0 3135 con2fb_map_boot[i] = primary_device;
623e71b0 3136
afd1db16
AD		 3137 if (con_is_bound(&fb_con)) {
3138 printk(KERN_INFO "fbcon: Remapping primary device, "
3139 "fb%i, to tty %i-%i\n", info->node,
3140 first_fb_vc + 1, last_fb_vc + 1);
3141 info_idx = primary_device;
623e71b0 3142 }
623e71b0
AD		 3143 }
3144
623e71b0
AD		 3145}
3146#else
afd1db16 3147static inline void fbcon_select_primary(struct fb_info *info)
623e71b0 3148{
afd1db16 3149 return;
e614b18d 3150}
623e71b0 3151#endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */
e614b18d 3152
054430e7 3153/* called with console_lock held */
623e71b0 3154static int fbcon_fb_registered(struct fb_info *info)
1da177e4 3155{
66c1ca01 3156 int ret = 0, i, idx;
623e71b0 3157
66c1ca01 3158 idx = info->node;
afd1db16 3159 fbcon_select_primary(info);
1da177e4
LT		 3160
3161 if (info_idx == -1) {
e614b18d 3162 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3163 if (con2fb_map_boot[i] == idx) {
3164 info_idx = idx;
3165 break;
3166 }
3167 }
e614b18d 3168
1da177e4 3169 if (info_idx != -1)
50e244cc 3170 ret = do_fbcon_takeover(1);
1da177e4 3171 } else {
e614b18d 3172 for (i = first_fb_vc; i <= last_fb_vc; i++) {
d1baa4ff 3173 if (con2fb_map_boot[i] == idx)
1da177e4
LT		 3174 set_con2fb_map(i, idx, 0);
3175 }
3176 }
3177
3178 return ret;
3179}
3180
3181static void fbcon_fb_blanked(struct fb_info *info, int blank)
3182{
3183 struct fbcon_ops *ops = info->fbcon_par;
3184 struct vc_data *vc;
3185
3186 if (!ops || ops->currcon < 0)
3187 return;
3188
3189 vc = vc_cons[ops->currcon].d;
3190 if (vc->vc_mode != KD_TEXT ||
3191 registered_fb[con2fb_map[ops->currcon]] != info)
3192 return;
3193
6ca8dfd7 3194 if (con_is_visible(vc)) {
1da177e4
LT		 3195 if (blank)
3196 do_blank_screen(0);
3197 else
3198 do_unblank_screen(0);
3199 }
3200 ops->blank_state = blank;
3201}
3202
3203static void fbcon_new_modelist(struct fb_info *info)
3204{
3205 int i;
3206 struct vc_data *vc;
3207 struct fb_var_screeninfo var;
9791d763 3208 const struct fb_videomode *mode;
1da177e4 3209
e614b18d 3210 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3211 if (registered_fb[con2fb_map[i]] != info)
3212 continue;
3213 if (!fb_display[i].mode)
3214 continue;
3215 vc = vc_cons[i].d;
3216 display_to_var(&var, &fb_display[i]);
8fb6567e
MJ		 3217 mode = fb_find_nearest_mode(fb_display[i].mode,
3218 &info->modelist);
1da177e4 3219 fb_videomode_to_var(&var, mode);
d1baa4ff 3220 fbcon_set_disp(info, &var, vc->vc_num);
1da177e4
LT		 3221 }
3222}
3223
38a3dc51
AD		 3224static void fbcon_get_requirement(struct fb_info *info,
3225 struct fb_blit_caps *caps)
3226{
3227 struct vc_data *vc;
3228 struct display *p;
38a3dc51
AD		 3229
3230 if (caps->flags) {
167f07f1 3231 int i, charcnt;
38a3dc51
AD		 3232
3233 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3234 vc = vc_cons[i].d;
167f07f1
AD		 3235 if (vc && vc->vc_mode == KD_TEXT &&
3236 info->node == con2fb_map[i]) {
38a3dc51
AD		 3237 p = &fb_display[i];
3238 caps->x |= 1 << (vc->vc_font.width - 1);
3239 caps->y |= 1 << (vc->vc_font.height - 1);
3240 charcnt = (p->userfont) ?
3241 FNTCHARCNT(p->fontdata) : 256;
3242 if (caps->len < charcnt)
3243 caps->len = charcnt;
3244 }
3245 }
3246 } else {
3247 vc = vc_cons[fg_console].d;
3248
167f07f1
AD		 3249 if (vc && vc->vc_mode == KD_TEXT &&
3250 info->node == con2fb_map[fg_console]) {
38a3dc51 3251 p = &fb_display[fg_console];
167f07f1
AD		 3252 caps->x = 1 << (vc->vc_font.width - 1);
3253 caps->y = 1 << (vc->vc_font.height - 1);
3254 caps->len = (p->userfont) ?
38a3dc51 3255 FNTCHARCNT(p->fontdata) : 256;
38a3dc51
AD		 3256 }
3257 }
3258}
3259
66c1ca01 3260static int fbcon_event_notify(struct notifier_block *self,
1da177e4
LT		 3261 unsigned long action, void *data)
3262{
3263 struct fb_event *event = data;
3264 struct fb_info *info = event->info;
3265 struct fb_videomode *mode;
3266 struct fb_con2fbmap *con2fb;
38a3dc51 3267 struct fb_blit_caps *caps;
66c1ca01 3268 int idx, ret = 0;
1da177e4 3269
e614b18d
AD		 3270 /*
3271 * ignore all events except driver registration and deregistration
3272 * if fbcon is not active
3273 */
3274 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
3275 action == FB_EVENT_FB_UNREGISTERED))
3276 goto done;
3277
1da177e4
LT		 3278 switch(action) {
3279 case FB_EVENT_SUSPEND:
3280 fbcon_suspended(info);
3281 break;
3282 case FB_EVENT_RESUME:
3283 fbcon_resumed(info);
3284 break;
3285 case FB_EVENT_MODE_CHANGE:
3286 fbcon_modechanged(info);
3287 break;
7726e9e1
AD		 3288 case FB_EVENT_MODE_CHANGE_ALL:
3289 fbcon_set_all_vcs(info);
3290 break;
1da177e4
LT		 3291 case FB_EVENT_MODE_DELETE:
3292 mode = event->data;
3293 ret = fbcon_mode_deleted(info, mode);
3294 break;
cfafca80 3295 case FB_EVENT_FB_UNBIND:
66c1ca01 3296 idx = info->node;
66c1ca01 3297 ret = fbcon_fb_unbind(idx);
cfafca80 3298 break;
1da177e4 3299 case FB_EVENT_FB_REGISTERED:
623e71b0 3300 ret = fbcon_fb_registered(info);
1da177e4 3301 break;
e614b18d 3302 case FB_EVENT_FB_UNREGISTERED:
623e71b0 3303 ret = fbcon_fb_unregistered(info);
e614b18d 3304 break;
1da177e4 3305 case FB_EVENT_SET_CONSOLE_MAP:
054430e7 3306 /* called with console lock held */
1da177e4
LT		 3307 con2fb = event->data;
3308 ret = set_con2fb_map(con2fb->console - 1,
3309 con2fb->framebuffer, 1);
3310 break;
3311 case FB_EVENT_GET_CONSOLE_MAP:
3312 con2fb = event->data;
3313 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
3314 break;
3315 case FB_EVENT_BLANK:
3316 fbcon_fb_blanked(info, *(int *)event->data);
3317 break;
3318 case FB_EVENT_NEW_MODELIST:
3319 fbcon_new_modelist(info);
3320 break;
38a3dc51
AD		 3321 case FB_EVENT_GET_REQ:
3322 caps = event->data;
3323 fbcon_get_requirement(info, caps);
3324 break;
6a9ee8af
DA		 3325 case FB_EVENT_REMAP_ALL_CONSOLE:
3326 idx = info->node;
3327 fbcon_remap_all(idx);
3328 break;
1da177e4 3329 }
e614b18d 3330done:
1da177e4
LT		 3331 return ret;
3332}
3333
3334/*
3335 * The console `switch' structure for the frame buffer based console
3336 */
3337
3338static const struct consw fb_con = {
3339 .owner = THIS_MODULE,
3340 .con_startup = fbcon_startup,
3341 .con_init = fbcon_init,
3342 .con_deinit = fbcon_deinit,
3343 .con_clear = fbcon_clear,
3344 .con_putc = fbcon_putc,
3345 .con_putcs = fbcon_putcs,
3346 .con_cursor = fbcon_cursor,
3347 .con_scroll = fbcon_scroll,
1da177e4
LT		 3348 .con_switch = fbcon_switch,
3349 .con_blank = fbcon_blank,
3350 .con_font_set = fbcon_set_font,
3351 .con_font_get = fbcon_get_font,
3352 .con_font_default = fbcon_set_def_font,
3353 .con_font_copy = fbcon_copy_font,
3354 .con_set_palette = fbcon_set_palette,
3355 .con_scrolldelta = fbcon_scrolldelta,
3356 .con_set_origin = fbcon_set_origin,
3357 .con_invert_region = fbcon_invert_region,
3358 .con_screen_pos = fbcon_screen_pos,
3359 .con_getxy = fbcon_getxy,
3360 .con_resize = fbcon_resize,
d219adc1
JB		 3361 .con_debug_enter = fbcon_debug_enter,
3362 .con_debug_leave = fbcon_debug_leave,
1da177e4
LT		 3363};
3364
3365static struct notifier_block fbcon_event_notifier = {
3366 .notifier_call = fbcon_event_notify,
3367};
3368
0c6c1ce0
AD		 3369static ssize_t store_rotate(struct device *device,
3370 struct device_attribute *attr, const char *buf,
3371 size_t count)
9a179176
AD		 3372{
3373 struct fb_info *info;
3374 int rotate, idx;
3375 char **last = NULL;
3376
e614b18d
AD		 3377 if (fbcon_has_exited)
3378 return count;
3379
ac751efa 3380 console_lock();
9a179176
AD		 3381 idx = con2fb_map[fg_console];
3382
3383 if (idx == -1 || registered_fb[idx] == NULL)
3384 goto err;
3385
3386 info = registered_fb[idx];
3387 rotate = simple_strtoul(buf, last, 0);
3388 fbcon_rotate(info, rotate);
3389err:
ac751efa 3390 console_unlock();
9a179176
AD		 3391 return count;
3392}
3393
0c6c1ce0
AD		 3394static ssize_t store_rotate_all(struct device *device,
3395 struct device_attribute *attr,const char *buf,
3396 size_t count)
9a179176
AD		 3397{
3398 struct fb_info *info;
3399 int rotate, idx;
3400 char **last = NULL;
3401
e614b18d
AD		 3402 if (fbcon_has_exited)
3403 return count;
3404
ac751efa 3405 console_lock();
9a179176
AD		 3406 idx = con2fb_map[fg_console];
3407
3408 if (idx == -1 || registered_fb[idx] == NULL)
3409 goto err;
3410
3411 info = registered_fb[idx];
3412 rotate = simple_strtoul(buf, last, 0);
3413 fbcon_rotate_all(info, rotate);
3414err:
ac751efa 3415 console_unlock();
9a179176
AD		 3416 return count;
3417}
3418
0c6c1ce0
AD		 3419static ssize_t show_rotate(struct device *device,
3420 struct device_attribute *attr,char *buf)
9a179176
AD		 3421{
3422 struct fb_info *info;
3423 int rotate = 0, idx;
3424
e614b18d
AD		 3425 if (fbcon_has_exited)
3426 return 0;
3427
ac751efa 3428 console_lock();
9a179176
AD		 3429 idx = con2fb_map[fg_console];
3430
3431 if (idx == -1 || registered_fb[idx] == NULL)
3432 goto err;
3433
3434 info = registered_fb[idx];
3435 rotate = fbcon_get_rotate(info);
3436err:
ac751efa 3437 console_unlock();
9a179176
AD		 3438 return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3439}
3440
0c6c1ce0
AD		 3441static ssize_t show_cursor_blink(struct device *device,
3442 struct device_attribute *attr, char *buf)
acba9cd0
AD		 3443{
3444 struct fb_info *info;
3445 struct fbcon_ops *ops;
3446 int idx, blink = -1;
3447
3448 if (fbcon_has_exited)
3449 return 0;
3450
ac751efa 3451 console_lock();
acba9cd0
AD		 3452 idx = con2fb_map[fg_console];
3453
3454 if (idx == -1 || registered_fb[idx] == NULL)
3455 goto err;
3456
3457 info = registered_fb[idx];
3458 ops = info->fbcon_par;
3459
3460 if (!ops)
3461 goto err;
3462
3463 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3464err:
ac751efa 3465 console_unlock();
acba9cd0
AD		 3466 return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3467}
3468
0c6c1ce0
AD		 3469static ssize_t store_cursor_blink(struct device *device,
3470 struct device_attribute *attr,
acba9cd0
AD		 3471 const char *buf, size_t count)
3472{
3473 struct fb_info *info;
3474 int blink, idx;
3475 char **last = NULL;
3476
3477 if (fbcon_has_exited)
3478 return count;
3479
ac751efa 3480 console_lock();
acba9cd0
AD		 3481 idx = con2fb_map[fg_console];
3482
3483 if (idx == -1 || registered_fb[idx] == NULL)
3484 goto err;
3485
3486 info = registered_fb[idx];
3487
3488 if (!info->fbcon_par)
3489 goto err;
3490
3491 blink = simple_strtoul(buf, last, 0);
3492
3493 if (blink) {
3494 fbcon_cursor_noblink = 0;
3495 fbcon_add_cursor_timer(info);
3496 } else {
3497 fbcon_cursor_noblink = 1;
3498 fbcon_del_cursor_timer(info);
3499 }
3500
3501err:
ac751efa 3502 console_unlock();
acba9cd0
AD		 3503 return count;
3504}
3505
0c6c1ce0 3506static struct device_attribute device_attrs[] = {
9a179176
AD		 3507 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3508 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
acba9cd0
AD		 3509 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3510 store_cursor_blink),
9a179176
AD		 3511};
3512
0c6c1ce0 3513static int fbcon_init_device(void)
9a179176 3514{
0a727dea
AD		 3515 int i, error = 0;
3516
3517 fbcon_has_sysfs = 1;
3518
0c6c1ce0
AD		 3519 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
3520 error = device_create_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3521
3522 if (error)
3523 break;
3524 }
3525
3526 if (error) {
3527 while (--i >= 0)
0c6c1ce0 3528 device_remove_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3529
3530 fbcon_has_sysfs = 0;
3531 }
9a179176 3532
9a179176
AD		 3533 return 0;
3534}
3535
5428b044 3536static void fbcon_start(void)
1da177e4 3537{
5428b044
AD		 3538 if (num_registered_fb) {
3539 int i;
9a179176 3540
ac751efa 3541 console_lock();
1da177e4 3542
1da177e4
LT		 3543 for (i = 0; i < FB_MAX; i++) {
3544 if (registered_fb[i] != NULL) {
3545 info_idx = i;
3546 break;
3547 }
3548 }
5428b044 3549
e57f35d4 3550 do_fbcon_takeover(0);
ac751efa 3551 console_unlock();
e57f35d4 3552
1da177e4 3553 }
9a179176
AD		 3554}
3555
5428b044 3556static void fbcon_exit(void)
9a179176 3557{
e55186fe
AD		 3558 struct fb_info *info;
3559 int i, j, mapped;
3560
e614b18d
AD		 3561 if (fbcon_has_exited)
3562 return;
3563
e55186fe 3564 kfree((void *)softback_buf);
5428b044 3565 softback_buf = 0UL;
e55186fe
AD		 3566
3567 for (i = 0; i < FB_MAX; i++) {
142092e5 3568 int pending = 0;
beaa4867 3569
e55186fe
AD		 3570 mapped = 0;
3571 info = registered_fb[i];
3572
3573 if (info == NULL)
3574 continue;
3575
142092e5
JP		 3576 if (info->queue.func)
3577 pending = cancel_work_sync(&info->queue);
beaa4867
GL		 3578 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" :
3579 "no"));
3580
e614b18d 3581 for (j = first_fb_vc; j <= last_fb_vc; j++) {
5aa133d6 3582 if (con2fb_map[j] == i) {
e55186fe 3583 mapped = 1;
5aa133d6
WY		 3584 break;
3585 }
e55186fe
AD		 3586 }
3587
3588 if (mapped) {
3589 if (info->fbops->fb_release)
3590 info->fbops->fb_release(info, 0);
3591 module_put(info->fbops->owner);
5428b044
AD		 3592
3593 if (info->fbcon_par) {
e299dd4d
DJ		 3594 struct fbcon_ops *ops = info->fbcon_par;
3595
5428b044 3596 fbcon_del_cursor_timer(info);
e299dd4d 3597 kfree(ops->cursor_src);
46862145 3598 kfree(ops->cursor_state.mask);
5428b044
AD		 3599 kfree(info->fbcon_par);
3600 info->fbcon_par = NULL;
3601 }
3602
3603 if (info->queue.func == fb_flashcursor)
3604 info->queue.func = NULL;
e55186fe
AD		 3605 }
3606 }
3607
e614b18d 3608 fbcon_has_exited = 1;
5428b044
AD		 3609}
3610
3611static int __init fb_console_init(void)
3612{
3613 int i;
3614
ac751efa 3615 console_lock();
5428b044 3616 fb_register_client(&fbcon_event_notifier);
77997aaa
GKH		 3617 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
3618 "fbcon");
5428b044 3619
0c6c1ce0
AD		 3620 if (IS_ERR(fbcon_device)) {
3621 printk(KERN_WARNING "Unable to create device "
5428b044 3622 "for fbcon; errno = %ld\n",
0c6c1ce0
AD		 3623 PTR_ERR(fbcon_device));
3624 fbcon_device = NULL;
5428b044 3625 } else
0c6c1ce0 3626 fbcon_init_device();
5428b044
AD		 3627
3628 for (i = 0; i < MAX_NR_CONSOLES; i++)
3629 con2fb_map[i] = -1;
3630
ac751efa 3631 console_unlock();
5428b044
AD		 3632 fbcon_start();
3633 return 0;
3634}
3635
ba168a3c 3636fs_initcall(fb_console_init);
5428b044
AD		 3637
3638#ifdef MODULE
3639
0c6c1ce0 3640static void __exit fbcon_deinit_device(void)
5428b044
AD		 3641{
3642 int i;
3643
0a727dea 3644 if (fbcon_has_sysfs) {
0c6c1ce0
AD		 3645 for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
3646 device_remove_file(fbcon_device, &device_attrs[i]);
0a727dea
AD		 3647
3648 fbcon_has_sysfs = 0;
3649 }
9a179176
AD		 3650}
3651
1da177e4
LT		 3652static void __exit fb_console_exit(void)
3653{
ac751efa 3654 console_lock();
1da177e4 3655 fb_unregister_client(&fbcon_event_notifier);
0c6c1ce0
AD		 3656 fbcon_deinit_device();
3657 device_destroy(fb_class, MKDEV(0, 0));
e614b18d 3658 fbcon_exit();
70125e76 3659 do_unregister_con_driver(&fb_con);
ac751efa 3660 console_unlock();
1da177e4
LT		 3661}
3662
3663module_exit(fb_console_exit);
3664
3665#endif
3666
3667MODULE_LICENSE("GPL");
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