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[PATCH] fbdev: colormap fixes
[mirror_ubuntu-bionic-kernel.git] / drivers / video / console / fbcon.c
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1da177e4
LT		 1/*
2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver
3 *
4 * Copyright (C) 1995 Geert Uytterhoeven
5 *
6 *
7 * This file is based on the original Amiga console driver (amicon.c):
8 *
9 * Copyright (C) 1993 Hamish Macdonald
10 * Greg Harp
11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
12 *
13 * with work by William Rucklidge (wjr@cs.cornell.edu)
14 * Geert Uytterhoeven
15 * Jes Sorensen (jds@kom.auc.dk)
16 * Martin Apel
17 *
18 * and on the original Atari console driver (atacon.c):
19 *
20 * Copyright (C) 1993 Bjoern Brauel
21 * Roman Hodek
22 *
23 * with work by Guenther Kelleter
24 * Martin Schaller
25 * Andreas Schwab
26 *
27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org)
28 * Smart redraw scrolling, arbitrary font width support, 512char font support
29 * and software scrollback added by
30 * Jakub Jelinek (jj@ultra.linux.cz)
31 *
32 * Random hacking by Martin Mares <mj@ucw.cz>
33 *
34 * 2001 - Documented with DocBook
35 * - Brad Douglas <brad@neruo.com>
36 *
37 * The low level operations for the various display memory organizations are
38 * now in separate source files.
39 *
40 * Currently the following organizations are supported:
41 *
42 * o afb Amiga bitplanes
43 * o cfb{2,4,8,16,24,32} Packed pixels
44 * o ilbm Amiga interleaved bitplanes
45 * o iplan2p[248] Atari interleaved bitplanes
46 * o mfb Monochrome
47 * o vga VGA characters/attributes
48 *
49 * To do:
50 *
51 * - Implement 16 plane mode (iplan2p16)
52 *
53 *
54 * This file is subject to the terms and conditions of the GNU General Public
55 * License. See the file COPYING in the main directory of this archive for
56 * more details.
57 */
58
59#undef FBCONDEBUG
60
61#include <linux/config.h>
62#include <linux/module.h>
63#include <linux/types.h>
64#include <linux/sched.h>
65#include <linux/fs.h>
66#include <linux/kernel.h>
67#include <linux/delay.h> /* MSch: for IRQ probe */
68#include <linux/tty.h>
69#include <linux/console.h>
70#include <linux/string.h>
71#include <linux/kd.h>
72#include <linux/slab.h>
73#include <linux/fb.h>
74#include <linux/vt_kern.h>
75#include <linux/selection.h>
76#include <linux/font.h>
77#include <linux/smp.h>
78#include <linux/init.h>
79#include <linux/interrupt.h>
80#include <linux/crc32.h> /* For counting font checksums */
81#include <asm/irq.h>
82#include <asm/system.h>
83#include <asm/uaccess.h>
84#ifdef CONFIG_ATARI
85#include <asm/atariints.h>
86#endif
87#ifdef CONFIG_MAC
88#include <asm/macints.h>
89#endif
90#if defined(__mc68000__) || defined(CONFIG_APUS)
91#include <asm/machdep.h>
92#include <asm/setup.h>
93#endif
94
95#include "fbcon.h"
96
97#ifdef FBCONDEBUG
98# define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
99#else
100# define DPRINTK(fmt, args...)
101#endif
102
103enum {
104 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
105 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
106 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */
107};
108
109struct display fb_display[MAX_NR_CONSOLES];
110static signed char con2fb_map[MAX_NR_CONSOLES];
111static signed char con2fb_map_boot[MAX_NR_CONSOLES];
112static int logo_height;
113static int logo_lines;
114/* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
115 enums. */
116static int logo_shown = FBCON_LOGO_CANSHOW;
117/* Software scrollback */
118static int fbcon_softback_size = 32768;
119static unsigned long softback_buf, softback_curr;
120static unsigned long softback_in;
121static unsigned long softback_top, softback_end;
122static int softback_lines;
123/* console mappings */
124static int first_fb_vc;
125static int last_fb_vc = MAX_NR_CONSOLES - 1;
126static int fbcon_is_default = 1;
127/* font data */
128static char fontname[40];
129
130/* current fb_info */
131static int info_idx = -1;
132
133static const struct consw fb_con;
134
135#define CM_SOFTBACK (8)
136
137#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
138
139static void fbcon_free_font(struct display *);
140static int fbcon_set_origin(struct vc_data *);
141
142#define CURSOR_DRAW_DELAY (1)
143
144/* # VBL ints between cursor state changes */
1da177e4
LT		 145#define ATARI_CURSOR_BLINK_RATE (42)
146#define MAC_CURSOR_BLINK_RATE (32)
147#define DEFAULT_CURSOR_BLINK_RATE (20)
148
149static int vbl_cursor_cnt;
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);
167static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
168 int count);
169static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
170 int height, int width);
171static int fbcon_switch(struct vc_data *vc);
172static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
173static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
174static int fbcon_scrolldelta(struct vc_data *vc, int lines);
175
176/*
177 * Internal routines
178 */
179static __inline__ int real_y(struct display *p, int ypos);
180static __inline__ void ywrap_up(struct vc_data *vc, int count);
181static __inline__ void ywrap_down(struct vc_data *vc, int count);
182static __inline__ void ypan_up(struct vc_data *vc, int count);
183static __inline__ void ypan_down(struct vc_data *vc, int count);
184static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
185 int dy, int dx, int height, int width, u_int y_break);
186static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
187 struct vc_data *vc);
188static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
189 int unit);
190static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
191 int line, int count, int dy);
192
193#ifdef CONFIG_MAC
194/*
195 * On the Macintoy, there may or may not be a working VBL int. We need to probe
196 */
197static int vbl_detected;
198
199static irqreturn_t fb_vbl_detect(int irq, void *dummy, struct pt_regs *fp)
200{
201 vbl_detected++;
202 return IRQ_HANDLED;
203}
204#endif
205
206static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
207{
208 struct fbcon_ops *ops = info->fbcon_par;
209
210 return (info->state != FBINFO_STATE_RUNNING ||
211 vc->vc_mode != KD_TEXT || ops->graphics);
212}
213
214static inline int get_color(struct vc_data *vc, struct fb_info *info,
215 u16 c, int is_fg)
216{
217 int depth = fb_get_color_depth(&info->var);
218 int color = 0;
219
220 if (console_blanked) {
221 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
222
223 c = vc->vc_video_erase_char & charmask;
224 }
225
226 if (depth != 1)
227 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
228 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
229
230 switch (depth) {
231 case 1:
232 {
233 /* 0 or 1 */
234 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? 1 : 0;
235 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : 1;
236
237 if (console_blanked)
238 fg = bg;
239
240 color = (is_fg) ? fg : bg;
241 break;
242 }
243 case 2:
244 /*
245 * Scale down 16-colors to 4 colors. Default 4-color palette
246 * is grayscale.
247 */
248 color /= 4;
249 break;
250 case 3:
251 /*
252 * Last 8 entries of default 16-color palette is a more intense
253 * version of the first 8 (i.e., same chrominance, different
254 * luminance).
255 */
256 color &= 7;
257 break;
258 }
259
260
261 return color;
262}
263
264static void fb_flashcursor(void *private)
265{
266 struct fb_info *info = private;
267 struct fbcon_ops *ops = info->fbcon_par;
268 struct display *p;
269 struct vc_data *vc = NULL;
270 int c;
271 int mode;
272
273 if (ops->currcon != -1)
274 vc = vc_cons[ops->currcon].d;
275
276 if (!vc || !CON_IS_VISIBLE(vc) ||
277 fbcon_is_inactive(vc, info) ||
278 registered_fb[con2fb_map[vc->vc_num]] != info)
279 return;
280 acquire_console_sem();
281 p = &fb_display[vc->vc_num];
282 c = scr_readw((u16 *) vc->vc_pos);
283 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
284 CM_ERASE : CM_DRAW;
285 ops->cursor(vc, info, p, mode, softback_lines, get_color(vc, info, c, 1),
286 get_color(vc, info, c, 0));
287 release_console_sem();
288}
289
41359dca 290#if defined(CONFIG_ATARI) || defined(CONFIG_MAC)
1da177e4
LT		 291static int cursor_blink_rate;
292static irqreturn_t fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp)
293{
294 struct fb_info *info = dev_id;
295
296 if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) {
297 schedule_work(&info->queue);
298 vbl_cursor_cnt = cursor_blink_rate;
299 }
300 return IRQ_HANDLED;
301}
302#endif
303
304static void cursor_timer_handler(unsigned long dev_addr)
305{
306 struct fb_info *info = (struct fb_info *) dev_addr;
307 struct fbcon_ops *ops = info->fbcon_par;
308
309 schedule_work(&info->queue);
310 mod_timer(&ops->cursor_timer, jiffies + HZ/5);
311}
312
313#ifndef MODULE
314static int __init fb_console_setup(char *this_opt)
315{
316 char *options;
317 int i, j;
318
319 if (!this_opt || !*this_opt)
320 return 0;
321
322 while ((options = strsep(&this_opt, ",")) != NULL) {
323 if (!strncmp(options, "font:", 5))
324 strcpy(fontname, options + 5);
325
326 if (!strncmp(options, "scrollback:", 11)) {
327 options += 11;
328 if (*options) {
329 fbcon_softback_size = simple_strtoul(options, &options, 0);
330 if (*options == 'k' || *options == 'K') {
331 fbcon_softback_size *= 1024;
332 options++;
333 }
334 if (*options != ',')
335 return 0;
336 options++;
337 } else
338 return 0;
339 }
340
341 if (!strncmp(options, "map:", 4)) {
342 options += 4;
343 if (*options)
344 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
345 if (!options[j])
346 j = 0;
347 con2fb_map_boot[i] =
348 (options[j++]-'0') % FB_MAX;
349 }
350 return 0;
351 }
352
353 if (!strncmp(options, "vc:", 3)) {
354 options += 3;
355 if (*options)
356 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
357 if (first_fb_vc < 0)
358 first_fb_vc = 0;
359 if (*options++ == '-')
360 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
361 fbcon_is_default = 0;
362 }
363 }
364 return 0;
365}
366
367__setup("fbcon=", fb_console_setup);
368#endif
369
370static int search_fb_in_map(int idx)
371{
372 int i, retval = 0;
373
374 for (i = 0; i < MAX_NR_CONSOLES; i++) {
375 if (con2fb_map[i] == idx)
376 retval = 1;
377 }
378 return retval;
379}
380
381static int search_for_mapped_con(void)
382{
383 int i, retval = 0;
384
385 for (i = 0; i < MAX_NR_CONSOLES; i++) {
386 if (con2fb_map[i] != -1)
387 retval = 1;
388 }
389 return retval;
390}
391
392static int fbcon_takeover(int show_logo)
393{
394 int err, i;
395
396 if (!num_registered_fb)
397 return -ENODEV;
398
399 if (!show_logo)
400 logo_shown = FBCON_LOGO_DONTSHOW;
401
402 for (i = first_fb_vc; i <= last_fb_vc; i++)
403 con2fb_map[i] = info_idx;
404
405 err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
406 fbcon_is_default);
407 if (err) {
408 for (i = first_fb_vc; i <= last_fb_vc; i++) {
409 con2fb_map[i] = -1;
410 }
411 info_idx = -1;
412 }
413
414 return err;
415}
416
417static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
418 int cols, int rows, int new_cols, int new_rows)
419{
420 /* Need to make room for the logo */
421 int cnt, erase = vc->vc_video_erase_char, step;
422 unsigned short *save = NULL, *r, *q;
423
424 /*
425 * remove underline attribute from erase character
426 * if black and white framebuffer.
427 */
428 if (fb_get_color_depth(&info->var) == 1)
429 erase &= ~0x400;
430 logo_height = fb_prepare_logo(info);
431 logo_lines = (logo_height + vc->vc_font.height - 1) /
432 vc->vc_font.height;
433 q = (unsigned short *) (vc->vc_origin +
434 vc->vc_size_row * rows);
435 step = logo_lines * cols;
436 for (r = q - logo_lines * cols; r < q; r++)
437 if (scr_readw(r) != vc->vc_video_erase_char)
438 break;
439 if (r != q && new_rows >= rows + logo_lines) {
440 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
441 if (save) {
442 int i = cols < new_cols ? cols : new_cols;
443 scr_memsetw(save, erase, logo_lines * new_cols * 2);
444 r = q - step;
445 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
446 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
447 r = q;
448 }
449 }
450 if (r == q) {
451 /* We can scroll screen down */
452 r = q - step - cols;
453 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
454 scr_memcpyw(r + step, r, vc->vc_size_row);
455 r -= cols;
456 }
457 if (!save) {
458 vc->vc_y += logo_lines;
459 vc->vc_pos += logo_lines * vc->vc_size_row;
460 }
461 }
462 scr_memsetw((unsigned short *) vc->vc_origin,
463 erase,
464 vc->vc_size_row * logo_lines);
465
466 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
467 fbcon_clear_margins(vc, 0);
468 update_screen(vc);
469 }
470
471 if (save) {
472 q = (unsigned short *) (vc->vc_origin +
473 vc->vc_size_row *
474 rows);
475 scr_memcpyw(q, save, logo_lines * new_cols * 2);
476 vc->vc_y += logo_lines;
477 vc->vc_pos += logo_lines * vc->vc_size_row;
478 kfree(save);
479 }
480
481 if (logo_lines > vc->vc_bottom) {
482 logo_shown = FBCON_LOGO_CANSHOW;
483 printk(KERN_INFO
484 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
485 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
486 logo_shown = FBCON_LOGO_DRAW;
487 vc->vc_top = logo_lines;
488 }
489}
490
491#ifdef CONFIG_FB_TILEBLITTING
492static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
493 struct display *p)
494{
495 struct fbcon_ops *ops = info->fbcon_par;
496
497 if ((info->flags & FBINFO_MISC_TILEBLITTING))
498 fbcon_set_tileops(vc, info, p, ops);
499 else
500 fbcon_set_bitops(ops);
501}
502#else
503static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
504 struct display *p)
505{
506 struct fbcon_ops *ops = info->fbcon_par;
507
508 info->flags &= ~FBINFO_MISC_TILEBLITTING;
509 fbcon_set_bitops(ops);
510}
511#endif /* CONFIG_MISC_TILEBLITTING */
512
513
514static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
515 int unit, int oldidx)
516{
517 struct fbcon_ops *ops = NULL;
518 int err = 0;
519
520 if (!try_module_get(info->fbops->owner))
521 err = -ENODEV;
522
523 if (!err && info->fbops->fb_open &&
524 info->fbops->fb_open(info, 0))
525 err = -ENODEV;
526
527 if (!err) {
528 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
529 if (!ops)
530 err = -ENOMEM;
531 }
532
533 if (!err) {
534 memset(ops, 0, sizeof(struct fbcon_ops));
535 info->fbcon_par = ops;
536 set_blitting_type(vc, info, NULL);
537 }
538
539 if (err) {
540 con2fb_map[unit] = oldidx;
541 module_put(info->fbops->owner);
542 }
543
544 return err;
545}
546
547static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
548 struct fb_info *newinfo, int unit,
549 int oldidx, int found)
550{
551 struct fbcon_ops *ops = oldinfo->fbcon_par;
552 int err = 0;
553
554 if (oldinfo->fbops->fb_release &&
555 oldinfo->fbops->fb_release(oldinfo, 0)) {
556 con2fb_map[unit] = oldidx;
557 if (!found && newinfo->fbops->fb_release)
558 newinfo->fbops->fb_release(newinfo, 0);
559 if (!found)
560 module_put(newinfo->fbops->owner);
561 err = -ENODEV;
562 }
563
564 if (!err) {
565 if (oldinfo->queue.func == fb_flashcursor)
566 del_timer_sync(&ops->cursor_timer);
567
568 kfree(ops->cursor_state.mask);
569 kfree(ops->cursor_data);
570 kfree(oldinfo->fbcon_par);
571 oldinfo->fbcon_par = NULL;
572 module_put(oldinfo->fbops->owner);
573 }
574
575 return err;
576}
577
578static void con2fb_init_newinfo(struct fb_info *info)
579{
580 if (!info->queue.func || info->queue.func == fb_flashcursor) {
581 struct fbcon_ops *ops = info->fbcon_par;
582
583 if (!info->queue.func)
584 INIT_WORK(&info->queue, fb_flashcursor, info);
585
586 init_timer(&ops->cursor_timer);
587 ops->cursor_timer.function = cursor_timer_handler;
588 ops->cursor_timer.expires = jiffies + HZ / 5;
589 ops->cursor_timer.data = (unsigned long ) info;
590 add_timer(&ops->cursor_timer);
591 }
592}
593
594static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
595 int unit, int show_logo)
596{
597 struct fbcon_ops *ops = info->fbcon_par;
598
599 ops->currcon = fg_console;
600
601 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT))
602 info->fbops->fb_set_par(info);
603
604 ops->flags |= FBCON_FLAGS_INIT;
605 ops->graphics = 0;
606
607 if (vc)
608 fbcon_set_disp(info, &info->var, vc);
609 else
610 fbcon_preset_disp(info, &info->var, unit);
611
612 if (show_logo) {
613 struct vc_data *fg_vc = vc_cons[fg_console].d;
614 struct fb_info *fg_info =
615 registered_fb[con2fb_map[fg_console]];
616
617 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
618 fg_vc->vc_rows, fg_vc->vc_cols,
619 fg_vc->vc_rows);
620 }
621
622 update_screen(vc_cons[fg_console].d);
623}
624
625/**
626 * set_con2fb_map - map console to frame buffer device
627 * @unit: virtual console number to map
628 * @newidx: frame buffer index to map virtual console to
629 * @user: user request
630 *
631 * Maps a virtual console @unit to a frame buffer device
632 * @newidx.
633 */
634static int set_con2fb_map(int unit, int newidx, int user)
635{
636 struct vc_data *vc = vc_cons[unit].d;
637 int oldidx = con2fb_map[unit];
638 struct fb_info *info = registered_fb[newidx];
639 struct fb_info *oldinfo = NULL;
640 int found, err = 0;
641
642 if (oldidx == newidx)
643 return 0;
644
645 if (!info)
646 err = -EINVAL;
647
648 if (!err && !search_for_mapped_con()) {
649 info_idx = newidx;
650 return fbcon_takeover(0);
651 }
652
653 if (oldidx != -1)
654 oldinfo = registered_fb[oldidx];
655
656 found = search_fb_in_map(newidx);
657
658 acquire_console_sem();
659 con2fb_map[unit] = newidx;
660 if (!err && !found)
661 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
662
663
664 /*
665 * If old fb is not mapped to any of the consoles,
666 * fbcon should release it.
667 */
668 if (!err && oldinfo && !search_fb_in_map(oldidx))
669 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
670 found);
671
672 if (!err) {
673 int show_logo = (fg_console == 0 && !user &&
674 logo_shown != FBCON_LOGO_DONTSHOW);
675
676 if (!found)
677 con2fb_init_newinfo(info);
678 con2fb_map_boot[unit] = newidx;
679 con2fb_init_display(vc, info, unit, show_logo);
680 }
681
682 release_console_sem();
683 return err;
684}
685
686/*
687 * Low Level Operations
688 */
689/* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
690static int var_to_display(struct display *disp,
691 struct fb_var_screeninfo *var,
692 struct fb_info *info)
693{
694 disp->xres_virtual = var->xres_virtual;
695 disp->yres_virtual = var->yres_virtual;
696 disp->bits_per_pixel = var->bits_per_pixel;
697 disp->grayscale = var->grayscale;
698 disp->nonstd = var->nonstd;
699 disp->accel_flags = var->accel_flags;
700 disp->height = var->height;
701 disp->width = var->width;
702 disp->red = var->red;
703 disp->green = var->green;
704 disp->blue = var->blue;
705 disp->transp = var->transp;
706 disp->rotate = var->rotate;
707 disp->mode = fb_match_mode(var, &info->modelist);
708 if (disp->mode == NULL)
709 /* This should not happen */
710 return -EINVAL;
711 return 0;
712}
713
714static void display_to_var(struct fb_var_screeninfo *var,
715 struct display *disp)
716{
717 fb_videomode_to_var(var, disp->mode);
718 var->xres_virtual = disp->xres_virtual;
719 var->yres_virtual = disp->yres_virtual;
720 var->bits_per_pixel = disp->bits_per_pixel;
721 var->grayscale = disp->grayscale;
722 var->nonstd = disp->nonstd;
723 var->accel_flags = disp->accel_flags;
724 var->height = disp->height;
725 var->width = disp->width;
726 var->red = disp->red;
727 var->green = disp->green;
728 var->blue = disp->blue;
729 var->transp = disp->transp;
730 var->rotate = disp->rotate;
731}
732
733static const char *fbcon_startup(void)
734{
735 const char *display_desc = "frame buffer device";
736 struct display *p = &fb_display[fg_console];
737 struct vc_data *vc = vc_cons[fg_console].d;
738 struct font_desc *font = NULL;
739 struct module *owner;
740 struct fb_info *info = NULL;
741 struct fbcon_ops *ops;
742 int rows, cols;
743 int irqres;
744
745 irqres = 1;
746 /*
747 * If num_registered_fb is zero, this is a call for the dummy part.
748 * The frame buffer devices weren't initialized yet.
749 */
750 if (!num_registered_fb || info_idx == -1)
751 return display_desc;
752 /*
753 * Instead of blindly using registered_fb[0], we use info_idx, set by
754 * fb_console_init();
755 */
756 info = registered_fb[info_idx];
757 if (!info)
758 return NULL;
759
760 owner = info->fbops->owner;
761 if (!try_module_get(owner))
762 return NULL;
763 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
764 module_put(owner);
765 return NULL;
766 }
767
768 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
769 if (!ops) {
770 module_put(owner);
771 return NULL;
772 }
773
774 memset(ops, 0, sizeof(struct fbcon_ops));
775 ops->currcon = -1;
776 ops->graphics = 1;
777 info->fbcon_par = ops;
778 set_blitting_type(vc, info, NULL);
779
780 if (info->fix.type != FB_TYPE_TEXT) {
781 if (fbcon_softback_size) {
782 if (!softback_buf) {
783 softback_buf =
784 (unsigned long)
785 kmalloc(fbcon_softback_size,
786 GFP_KERNEL);
787 if (!softback_buf) {
788 fbcon_softback_size = 0;
789 softback_top = 0;
790 }
791 }
792 } else {
793 if (softback_buf) {
794 kfree((void *) softback_buf);
795 softback_buf = 0;
796 softback_top = 0;
797 }
798 }
799 if (softback_buf)
800 softback_in = softback_top = softback_curr =
801 softback_buf;
802 softback_lines = 0;
803 }
804
805 /* Setup default font */
806 if (!p->fontdata) {
807 if (!fontname[0] || !(font = find_font(fontname)))
808 font = get_default_font(info->var.xres,
809 info->var.yres);
810 vc->vc_font.width = font->width;
811 vc->vc_font.height = font->height;
812 vc->vc_font.data = p->fontdata = font->data;
813 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
814 }
815
816 cols = info->var.xres / vc->vc_font.width;
817 rows = info->var.yres / vc->vc_font.height;
818 vc_resize(vc, cols, rows);
819
820 DPRINTK("mode: %s\n", info->fix.id);
821 DPRINTK("visual: %d\n", info->fix.visual);
822 DPRINTK("res: %dx%d-%d\n", info->var.xres,
823 info->var.yres,
824 info->var.bits_per_pixel);
825
826#ifdef CONFIG_ATARI
827 if (MACH_IS_ATARI) {
828 cursor_blink_rate = ATARI_CURSOR_BLINK_RATE;
829 irqres =
830 request_irq(IRQ_AUTO_4, fb_vbl_handler,
831 IRQ_TYPE_PRIO, "framebuffer vbl",
832 info);
833 }
834#endif /* CONFIG_ATARI */
835
836#ifdef CONFIG_MAC
837 /*
838 * On a Macintoy, the VBL interrupt may or may not be active.
839 * As interrupt based cursor is more reliable and race free, we
840 * probe for VBL interrupts.
841 */
842 if (MACH_IS_MAC) {
843 int ct = 0;
844 /*
845 * Probe for VBL: set temp. handler ...
846 */
847 irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0,
848 "framebuffer vbl", info);
849 vbl_detected = 0;
850
851 /*
852 * ... and spin for 20 ms ...
853 */
854 while (!vbl_detected && ++ct < 1000)
855 udelay(20);
856
857 if (ct == 1000)
858 printk
859 ("fbcon_startup: No VBL detected, using timer based cursor.\n");
860
861 free_irq(IRQ_MAC_VBL, fb_vbl_detect);
862
863 if (vbl_detected) {
864 /*
865 * interrupt based cursor ok
866 */
867 cursor_blink_rate = MAC_CURSOR_BLINK_RATE;
868 irqres =
869 request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0,
870 "framebuffer vbl", info);
871 } else {
872 /*
873 * VBL not detected: fall through, use timer based cursor
874 */
875 irqres = 1;
876 }
877 }
878#endif /* CONFIG_MAC */
879
1da177e4
LT		 880 /* Initialize the work queue. If the driver provides its
881 * own work queue this means it will use something besides
882 * default timer to flash the cursor. */
883 if (!info->queue.func) {
884 INIT_WORK(&info->queue, fb_flashcursor, info);
885
886 init_timer(&ops->cursor_timer);
887 ops->cursor_timer.function = cursor_timer_handler;
888 ops->cursor_timer.expires = jiffies + HZ / 5;
889 ops->cursor_timer.data = (unsigned long ) info;
890 add_timer(&ops->cursor_timer);
891 }
892 return display_desc;
893}
894
895static void fbcon_init(struct vc_data *vc, int init)
896{
897 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
898 struct fbcon_ops *ops;
899 struct vc_data **default_mode = vc->vc_display_fg;
900 struct vc_data *svc = *default_mode;
901 struct display *t, *p = &fb_display[vc->vc_num];
902 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
306958e8 903 int cap;
1da177e4
LT		 904
905 if (info_idx == -1 || info == NULL)
906 return;
306958e8
AB		 907
908 cap = info->flags;
909
1da177e4
LT		 910 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
911 (info->fix.type == FB_TYPE_TEXT))
912 logo = 0;
913
914 info->var.xoffset = info->var.yoffset = p->yscroll = 0; /* reset wrap/pan */
915
916 if (var_to_display(p, &info->var, info))
917 return;
918
919 /* If we are not the first console on this
920 fb, copy the font from that console */
921 t = &fb_display[svc->vc_num];
922 if (!vc->vc_font.data) {
923 vc->vc_font.data = p->fontdata = t->fontdata;
924 vc->vc_font.width = (*default_mode)->vc_font.width;
925 vc->vc_font.height = (*default_mode)->vc_font.height;
926 p->userfont = t->userfont;
927 if (p->userfont)
928 REFCOUNT(p->fontdata)++;
929 }
930 if (p->userfont)
931 charcnt = FNTCHARCNT(p->fontdata);
932 vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1);
933 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
934 if (charcnt == 256) {
935 vc->vc_hi_font_mask = 0;
936 } else {
937 vc->vc_hi_font_mask = 0x100;
938 if (vc->vc_can_do_color)
939 vc->vc_complement_mask <<= 1;
940 }
941
942 if (!*svc->vc_uni_pagedir_loc)
943 con_set_default_unimap(svc);
944 if (!*vc->vc_uni_pagedir_loc)
945 con_copy_unimap(vc, svc);
946
947 cols = vc->vc_cols;
948 rows = vc->vc_rows;
949 new_cols = info->var.xres / vc->vc_font.width;
950 new_rows = info->var.yres / vc->vc_font.height;
951 vc_resize(vc, new_cols, new_rows);
952
953 ops = info->fbcon_par;
954 /*
955 * We must always set the mode. The mode of the previous console
956 * driver could be in the same resolution but we are using different
957 * hardware so we have to initialize the hardware.
958 *
959 * We need to do it in fbcon_init() to prevent screen corruption.
960 */
961 if (CON_IS_VISIBLE(vc)) {
962 if (info->fbops->fb_set_par &&
963 !(ops->flags & FBCON_FLAGS_INIT))
964 info->fbops->fb_set_par(info);
965 ops->flags |= FBCON_FLAGS_INIT;
966 }
967
968 ops->graphics = 0;
969
970 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
971 !(cap & FBINFO_HWACCEL_DISABLED))
972 p->scrollmode = SCROLL_MOVE;
973 else /* default to something safe */
974 p->scrollmode = SCROLL_REDRAW;
975
976 /*
977 * ++guenther: console.c:vc_allocate() relies on initializing
978 * vc_{cols,rows}, but we must not set those if we are only
979 * resizing the console.
980 */
981 if (!init) {
982 vc->vc_cols = new_cols;
983 vc->vc_rows = new_rows;
984 }
985
986 if (logo)
987 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
988
989 if (vc == svc && softback_buf) {
990 int l = fbcon_softback_size / vc->vc_size_row;
991 if (l > 5)
992 softback_end = softback_buf + l * vc->vc_size_row;
993 else {
994 /* Smaller scrollback makes no sense, and 0 would screw
995 the operation totally */
996 softback_top = 0;
997 }
998 }
999}
1000
1001static void fbcon_deinit(struct vc_data *vc)
1002{
1003 struct display *p = &fb_display[vc->vc_num];
1004
1005 if (info_idx != -1)
1006 return;
1007 fbcon_free_font(p);
1008}
1009
1010/* ====================================================================== */
1011
1012/* fbcon_XXX routines - interface used by the world
1013 *
1014 * This system is now divided into two levels because of complications
1015 * caused by hardware scrolling. Top level functions:
1016 *
1017 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1018 *
1019 * handles y values in range [0, scr_height-1] that correspond to real
1020 * screen positions. y_wrap shift means that first line of bitmap may be
1021 * anywhere on this display. These functions convert lineoffsets to
1022 * bitmap offsets and deal with the wrap-around case by splitting blits.
1023 *
1024 * fbcon_bmove_physical_8() -- These functions fast implementations
1025 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1026 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1027 *
1028 * WARNING:
1029 *
1030 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1031 * Implies should only really hardware scroll in rows. Only reason for
1032 * restriction is simplicity & efficiency at the moment.
1033 */
1034
1035static __inline__ int real_y(struct display *p, int ypos)
1036{
1037 int rows = p->vrows;
1038
1039 ypos += p->yscroll;
1040 return ypos < rows ? ypos : ypos - rows;
1041}
1042
1043
1044static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1045 int width)
1046{
1047 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1048 struct fbcon_ops *ops = info->fbcon_par;
1049
1050 struct display *p = &fb_display[vc->vc_num];
1051 u_int y_break;
1052
1053 if (fbcon_is_inactive(vc, info))
1054 return;
1055
1056 if (!height || !width)
1057 return;
1058
1059 /* Split blits that cross physical y_wrap boundary */
1060
1061 y_break = p->vrows - p->yscroll;
1062 if (sy < y_break && sy + height - 1 >= y_break) {
1063 u_int b = y_break - sy;
1064 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1065 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1066 width);
1067 } else
1068 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1069}
1070
1071static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1072 int count, int ypos, int xpos)
1073{
1074 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1075 struct display *p = &fb_display[vc->vc_num];
1076 struct fbcon_ops *ops = info->fbcon_par;
1077
1078 if (!fbcon_is_inactive(vc, info))
1079 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1080 get_color(vc, info, scr_readw(s), 1),
1081 get_color(vc, info, scr_readw(s), 0));
1082}
1083
1084static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1085{
1086 unsigned short chr;
1087
1088 scr_writew(c, &chr);
1089 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1090}
1091
1092static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1093{
1094 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1095 struct fbcon_ops *ops = info->fbcon_par;
1096
1097 if (!fbcon_is_inactive(vc, info))
1098 ops->clear_margins(vc, info, bottom_only);
1099}
1100
1101static void fbcon_cursor(struct vc_data *vc, int mode)
1102{
1103 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1104 struct fbcon_ops *ops = info->fbcon_par;
1105 struct display *p = &fb_display[vc->vc_num];
1106 int y;
1107 int c = scr_readw((u16 *) vc->vc_pos);
1108
1109 if (fbcon_is_inactive(vc, info))
1110 return;
1111
1112 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1113 if (mode & CM_SOFTBACK) {
1114 mode &= ~CM_SOFTBACK;
1115 y = softback_lines;
1116 } else {
1117 if (softback_lines)
1118 fbcon_set_origin(vc);
1119 y = 0;
1120 }
1121
1122 ops->cursor(vc, info, p, mode, y, get_color(vc, info, c, 1),
1123 get_color(vc, info, c, 0));
1124 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1125}
1126
1127static int scrollback_phys_max = 0;
1128static int scrollback_max = 0;
1129static int scrollback_current = 0;
1130
1131static int update_var(int con, struct fb_info *info)
1132{
1133 if (con == ((struct fbcon_ops *)info->fbcon_par)->currcon)
1134 return fb_pan_display(info, &info->var);
1135 return 0;
1136}
1137
1138/*
1139 * If no vc is existent yet, just set struct display
1140 */
1141static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1142 int unit)
1143{
1144 struct display *p = &fb_display[unit];
1145 struct display *t = &fb_display[fg_console];
1146
1147 var->xoffset = var->yoffset = p->yscroll = 0;
1148 if (var_to_display(p, var, info))
1149 return;
1150
1151 p->fontdata = t->fontdata;
1152 p->userfont = t->userfont;
1153 if (p->userfont)
1154 REFCOUNT(p->fontdata)++;
1155}
1156
1157static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1158 struct vc_data *vc)
1159{
1160 struct display *p = &fb_display[vc->vc_num], *t;
1161 struct vc_data **default_mode = vc->vc_display_fg;
1162 struct vc_data *svc = *default_mode;
1163 int rows, cols, charcnt = 256;
1164
1165 var->xoffset = var->yoffset = p->yscroll = 0;
1166 if (var_to_display(p, var, info))
1167 return;
1168 t = &fb_display[svc->vc_num];
1169 if (!vc->vc_font.data) {
1170 vc->vc_font.data = p->fontdata = t->fontdata;
1171 vc->vc_font.width = (*default_mode)->vc_font.width;
1172 vc->vc_font.height = (*default_mode)->vc_font.height;
1173 p->userfont = t->userfont;
1174 if (p->userfont)
1175 REFCOUNT(p->fontdata)++;
1176 }
1177 if (p->userfont)
1178 charcnt = FNTCHARCNT(p->fontdata);
1179
1180 vc->vc_can_do_color = (fb_get_color_depth(var) != 1);
1181 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1182 if (charcnt == 256) {
1183 vc->vc_hi_font_mask = 0;
1184 } else {
1185 vc->vc_hi_font_mask = 0x100;
1186 if (vc->vc_can_do_color)
1187 vc->vc_complement_mask <<= 1;
1188 }
1189
1190 if (!*svc->vc_uni_pagedir_loc)
1191 con_set_default_unimap(svc);
1192 if (!*vc->vc_uni_pagedir_loc)
1193 con_copy_unimap(vc, svc);
1194
1195 cols = var->xres / vc->vc_font.width;
1196 rows = var->yres / vc->vc_font.height;
1197 vc_resize(vc, cols, rows);
1198 if (CON_IS_VISIBLE(vc)) {
1199 update_screen(vc);
1200 if (softback_buf) {
1201 int l = fbcon_softback_size / vc->vc_size_row;
1202
1203 if (l > 5)
1204 softback_end = softback_buf + l *
1205 vc->vc_size_row;
1206 else {
1207 /* Smaller scrollback makes no sense, and 0
1208 would screw the operation totally */
1209 softback_top = 0;
1210 }
1211 }
1212 }
1213}
1214
1215static __inline__ void ywrap_up(struct vc_data *vc, int count)
1216{
1217 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1218 struct display *p = &fb_display[vc->vc_num];
1219
1220 p->yscroll += count;
1221 if (p->yscroll >= p->vrows) /* Deal with wrap */
1222 p->yscroll -= p->vrows;
1223 info->var.xoffset = 0;
1224 info->var.yoffset = p->yscroll * vc->vc_font.height;
1225 info->var.vmode |= FB_VMODE_YWRAP;
1226 update_var(vc->vc_num, info);
1227 scrollback_max += count;
1228 if (scrollback_max > scrollback_phys_max)
1229 scrollback_max = scrollback_phys_max;
1230 scrollback_current = 0;
1231}
1232
1233static __inline__ void ywrap_down(struct vc_data *vc, int count)
1234{
1235 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1236 struct display *p = &fb_display[vc->vc_num];
1237
1238 p->yscroll -= count;
1239 if (p->yscroll < 0) /* Deal with wrap */
1240 p->yscroll += p->vrows;
1241 info->var.xoffset = 0;
1242 info->var.yoffset = p->yscroll * vc->vc_font.height;
1243 info->var.vmode |= FB_VMODE_YWRAP;
1244 update_var(vc->vc_num, info);
1245 scrollback_max -= count;
1246 if (scrollback_max < 0)
1247 scrollback_max = 0;
1248 scrollback_current = 0;
1249}
1250
1251static __inline__ void ypan_up(struct vc_data *vc, int count)
1252{
1253 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1254 struct display *p = &fb_display[vc->vc_num];
1255 struct fbcon_ops *ops = info->fbcon_par;
1256
1257 p->yscroll += count;
1258 if (p->yscroll > p->vrows - vc->vc_rows) {
1259 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1260 0, 0, 0, vc->vc_rows, vc->vc_cols);
1261 p->yscroll -= p->vrows - vc->vc_rows;
1262 }
1263 info->var.xoffset = 0;
1264 info->var.yoffset = p->yscroll * vc->vc_font.height;
1265 info->var.vmode &= ~FB_VMODE_YWRAP;
1266 update_var(vc->vc_num, info);
1267 fbcon_clear_margins(vc, 1);
1268 scrollback_max += count;
1269 if (scrollback_max > scrollback_phys_max)
1270 scrollback_max = scrollback_phys_max;
1271 scrollback_current = 0;
1272}
1273
1274static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1275{
1276 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1277 struct display *p = &fb_display[vc->vc_num];
1278 int redraw = 0;
1279
1280 p->yscroll += count;
1281 if (p->yscroll > p->vrows - vc->vc_rows) {
1282 p->yscroll -= p->vrows - vc->vc_rows;
1283 redraw = 1;
1284 }
1285
1286 info->var.xoffset = 0;
1287 info->var.yoffset = p->yscroll * vc->vc_font.height;
1288 info->var.vmode &= ~FB_VMODE_YWRAP;
1289 if (redraw)
1290 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1291 update_var(vc->vc_num, info);
1292 fbcon_clear_margins(vc, 1);
1293 scrollback_max += count;
1294 if (scrollback_max > scrollback_phys_max)
1295 scrollback_max = scrollback_phys_max;
1296 scrollback_current = 0;
1297}
1298
1299static __inline__ void ypan_down(struct vc_data *vc, int count)
1300{
1301 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1302 struct display *p = &fb_display[vc->vc_num];
1303 struct fbcon_ops *ops = info->fbcon_par;
1304
1305 p->yscroll -= count;
1306 if (p->yscroll < 0) {
1307 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1308 0, vc->vc_rows, vc->vc_cols);
1309 p->yscroll += p->vrows - vc->vc_rows;
1310 }
1311 info->var.xoffset = 0;
1312 info->var.yoffset = p->yscroll * vc->vc_font.height;
1313 info->var.vmode &= ~FB_VMODE_YWRAP;
1314 update_var(vc->vc_num, info);
1315 fbcon_clear_margins(vc, 1);
1316 scrollback_max -= count;
1317 if (scrollback_max < 0)
1318 scrollback_max = 0;
1319 scrollback_current = 0;
1320}
1321
1322static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1323{
1324 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1325 struct display *p = &fb_display[vc->vc_num];
1326 int redraw = 0;
1327
1328 p->yscroll -= count;
1329 if (p->yscroll < 0) {
1330 p->yscroll += p->vrows - vc->vc_rows;
1331 redraw = 1;
1332 }
1333 info->var.xoffset = 0;
1334 info->var.yoffset = p->yscroll * vc->vc_font.height;
1335 info->var.vmode &= ~FB_VMODE_YWRAP;
1336 if (redraw)
1337 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1338 update_var(vc->vc_num, info);
1339 fbcon_clear_margins(vc, 1);
1340 scrollback_max -= count;
1341 if (scrollback_max < 0)
1342 scrollback_max = 0;
1343 scrollback_current = 0;
1344}
1345
1346static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1347 long delta)
1348{
1349 int count = vc->vc_rows;
1350 unsigned short *d, *s;
1351 unsigned long n;
1352 int line = 0;
1353
1354 d = (u16 *) softback_curr;
1355 if (d == (u16 *) softback_in)
1356 d = (u16 *) vc->vc_origin;
1357 n = softback_curr + delta * vc->vc_size_row;
1358 softback_lines -= delta;
1359 if (delta < 0) {
1360 if (softback_curr < softback_top && n < softback_buf) {
1361 n += softback_end - softback_buf;
1362 if (n < softback_top) {
1363 softback_lines -=
1364 (softback_top - n) / vc->vc_size_row;
1365 n = softback_top;
1366 }
1367 } else if (softback_curr >= softback_top
1368 && n < softback_top) {
1369 softback_lines -=
1370 (softback_top - n) / vc->vc_size_row;
1371 n = softback_top;
1372 }
1373 } else {
1374 if (softback_curr > softback_in && n >= softback_end) {
1375 n += softback_buf - softback_end;
1376 if (n > softback_in) {
1377 n = softback_in;
1378 softback_lines = 0;
1379 }
1380 } else if (softback_curr <= softback_in && n > softback_in) {
1381 n = softback_in;
1382 softback_lines = 0;
1383 }
1384 }
1385 if (n == softback_curr)
1386 return;
1387 softback_curr = n;
1388 s = (u16 *) softback_curr;
1389 if (s == (u16 *) softback_in)
1390 s = (u16 *) vc->vc_origin;
1391 while (count--) {
1392 unsigned short *start;
1393 unsigned short *le;
1394 unsigned short c;
1395 int x = 0;
1396 unsigned short attr = 1;
1397
1398 start = s;
1399 le = advance_row(s, 1);
1400 do {
1401 c = scr_readw(s);
1402 if (attr != (c & 0xff00)) {
1403 attr = c & 0xff00;
1404 if (s > start) {
1405 fbcon_putcs(vc, start, s - start,
1406 line, x);
1407 x += s - start;
1408 start = s;
1409 }
1410 }
1411 if (c == scr_readw(d)) {
1412 if (s > start) {
1413 fbcon_putcs(vc, start, s - start,
1414 line, x);
1415 x += s - start + 1;
1416 start = s + 1;
1417 } else {
1418 x++;
1419 start++;
1420 }
1421 }
1422 s++;
1423 d++;
1424 } while (s < le);
1425 if (s > start)
1426 fbcon_putcs(vc, start, s - start, line, x);
1427 line++;
1428 if (d == (u16 *) softback_end)
1429 d = (u16 *) softback_buf;
1430 if (d == (u16 *) softback_in)
1431 d = (u16 *) vc->vc_origin;
1432 if (s == (u16 *) softback_end)
1433 s = (u16 *) softback_buf;
1434 if (s == (u16 *) softback_in)
1435 s = (u16 *) vc->vc_origin;
1436 }
1437}
1438
1439static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1440 int line, int count, int dy)
1441{
1442 unsigned short *s = (unsigned short *)
1443 (vc->vc_origin + vc->vc_size_row * line);
1444
1445 while (count--) {
1446 unsigned short *start = s;
1447 unsigned short *le = advance_row(s, 1);
1448 unsigned short c;
1449 int x = 0;
1450 unsigned short attr = 1;
1451
1452 do {
1453 c = scr_readw(s);
1454 if (attr != (c & 0xff00)) {
1455 attr = c & 0xff00;
1456 if (s > start) {
1457 fbcon_putcs(vc, start, s - start,
1458 dy, x);
1459 x += s - start;
1460 start = s;
1461 }
1462 }
1463 console_conditional_schedule();
1464 s++;
1465 } while (s < le);
1466 if (s > start)
1467 fbcon_putcs(vc, start, s - start, dy, x);
1468 console_conditional_schedule();
1469 dy++;
1470 }
1471}
1472
1473static void fbcon_redraw(struct vc_data *vc, struct display *p,
1474 int line, int count, int offset)
1475{
1476 unsigned short *d = (unsigned short *)
1477 (vc->vc_origin + vc->vc_size_row * line);
1478 unsigned short *s = d + offset;
1479
1480 while (count--) {
1481 unsigned short *start = s;
1482 unsigned short *le = advance_row(s, 1);
1483 unsigned short c;
1484 int x = 0;
1485 unsigned short attr = 1;
1486
1487 do {
1488 c = scr_readw(s);
1489 if (attr != (c & 0xff00)) {
1490 attr = c & 0xff00;
1491 if (s > start) {
1492 fbcon_putcs(vc, start, s - start,
1493 line, x);
1494 x += s - start;
1495 start = s;
1496 }
1497 }
1498 if (c == scr_readw(d)) {
1499 if (s > start) {
1500 fbcon_putcs(vc, start, s - start,
1501 line, x);
1502 x += s - start + 1;
1503 start = s + 1;
1504 } else {
1505 x++;
1506 start++;
1507 }
1508 }
1509 scr_writew(c, d);
1510 console_conditional_schedule();
1511 s++;
1512 d++;
1513 } while (s < le);
1514 if (s > start)
1515 fbcon_putcs(vc, start, s - start, line, x);
1516 console_conditional_schedule();
1517 if (offset > 0)
1518 line++;
1519 else {
1520 line--;
1521 /* NOTE: We subtract two lines from these pointers */
1522 s -= vc->vc_size_row;
1523 d -= vc->vc_size_row;
1524 }
1525 }
1526}
1527
1528static inline void fbcon_softback_note(struct vc_data *vc, int t,
1529 int count)
1530{
1531 unsigned short *p;
1532
1533 if (vc->vc_num != fg_console)
1534 return;
1535 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1536
1537 while (count) {
1538 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1539 count--;
1540 p = advance_row(p, 1);
1541 softback_in += vc->vc_size_row;
1542 if (softback_in == softback_end)
1543 softback_in = softback_buf;
1544 if (softback_in == softback_top) {
1545 softback_top += vc->vc_size_row;
1546 if (softback_top == softback_end)
1547 softback_top = softback_buf;
1548 }
1549 }
1550 softback_curr = softback_in;
1551}
1552
1553static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1554 int count)
1555{
1556 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1557 struct display *p = &fb_display[vc->vc_num];
1558 struct fbcon_ops *ops = info->fbcon_par;
1559 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1560
1561 if (fbcon_is_inactive(vc, info))
1562 return -EINVAL;
1563
1564 fbcon_cursor(vc, CM_ERASE);
1565
1566 /*
1567 * ++Geert: Only use ywrap/ypan if the console is in text mode
1568 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1569 * whole screen (prevents flicker).
1570 */
1571
1572 switch (dir) {
1573 case SM_UP:
1574 if (count > vc->vc_rows) /* Maximum realistic size */
1575 count = vc->vc_rows;
1576 if (softback_top)
1577 fbcon_softback_note(vc, t, count);
1578 if (logo_shown >= 0)
1579 goto redraw_up;
1580 switch (p->scrollmode) {
1581 case SCROLL_MOVE:
1582 ops->bmove(vc, info, t + count, 0, t, 0,
1583 b - t - count, vc->vc_cols);
1584 ops->clear(vc, info, b - count, 0, count,
1585 vc->vc_cols);
1586 break;
1587
1588 case SCROLL_WRAP_MOVE:
1589 if (b - t - count > 3 * vc->vc_rows >> 2) {
1590 if (t > 0)
1591 fbcon_bmove(vc, 0, 0, count, 0, t,
1592 vc->vc_cols);
1593 ywrap_up(vc, count);
1594 if (vc->vc_rows - b > 0)
1595 fbcon_bmove(vc, b - count, 0, b, 0,
1596 vc->vc_rows - b,
1597 vc->vc_cols);
1598 } else if (info->flags & FBINFO_READS_FAST)
1599 fbcon_bmove(vc, t + count, 0, t, 0,
1600 b - t - count, vc->vc_cols);
1601 else
1602 goto redraw_up;
1603 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1604 break;
1605
1606 case SCROLL_PAN_REDRAW:
1607 if ((p->yscroll + count <=
1608 2 * (p->vrows - vc->vc_rows))
1609 && ((!scroll_partial && (b - t == vc->vc_rows))
1610 || (scroll_partial
1611 && (b - t - count >
1612 3 * vc->vc_rows >> 2)))) {
1613 if (t > 0)
1614 fbcon_redraw_move(vc, p, 0, t, count);
1615 ypan_up_redraw(vc, t, count);
1616 if (vc->vc_rows - b > 0)
1617 fbcon_redraw_move(vc, p, b - count,
1618 vc->vc_rows - b, b);
1619 } else
1620 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1621 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1622 break;
1623
1624 case SCROLL_PAN_MOVE:
1625 if ((p->yscroll + count <=
1626 2 * (p->vrows - vc->vc_rows))
1627 && ((!scroll_partial && (b - t == vc->vc_rows))
1628 || (scroll_partial
1629 && (b - t - count >
1630 3 * vc->vc_rows >> 2)))) {
1631 if (t > 0)
1632 fbcon_bmove(vc, 0, 0, count, 0, t,
1633 vc->vc_cols);
1634 ypan_up(vc, count);
1635 if (vc->vc_rows - b > 0)
1636 fbcon_bmove(vc, b - count, 0, b, 0,
1637 vc->vc_rows - b,
1638 vc->vc_cols);
1639 } else if (info->flags & FBINFO_READS_FAST)
1640 fbcon_bmove(vc, t + count, 0, t, 0,
1641 b - t - count, vc->vc_cols);
1642 else
1643 goto redraw_up;
1644 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1645 break;
1646
1647 case SCROLL_REDRAW:
1648 redraw_up:
1649 fbcon_redraw(vc, p, t, b - t - count,
1650 count * vc->vc_cols);
1651 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1652 scr_memsetw((unsigned short *) (vc->vc_origin +
1653 vc->vc_size_row *
1654 (b - count)),
1655 vc->vc_video_erase_char,
1656 vc->vc_size_row * count);
1657 return 1;
1658 }
1659 break;
1660
1661 case SM_DOWN:
1662 if (count > vc->vc_rows) /* Maximum realistic size */
1663 count = vc->vc_rows;
1664 switch (p->scrollmode) {
1665 case SCROLL_MOVE:
1666 ops->bmove(vc, info, t, 0, t + count, 0,
1667 b - t - count, vc->vc_cols);
1668 ops->clear(vc, info, t, 0, count, vc->vc_cols);
1669 break;
1670
1671 case SCROLL_WRAP_MOVE:
1672 if (b - t - count > 3 * vc->vc_rows >> 2) {
1673 if (vc->vc_rows - b > 0)
1674 fbcon_bmove(vc, b, 0, b - count, 0,
1675 vc->vc_rows - b,
1676 vc->vc_cols);
1677 ywrap_down(vc, count);
1678 if (t > 0)
1679 fbcon_bmove(vc, count, 0, 0, 0, t,
1680 vc->vc_cols);
1681 } else if (info->flags & FBINFO_READS_FAST)
1682 fbcon_bmove(vc, t, 0, t + count, 0,
1683 b - t - count, vc->vc_cols);
1684 else
1685 goto redraw_down;
1686 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1687 break;
1688
1689 case SCROLL_PAN_MOVE:
1690 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1691 && ((!scroll_partial && (b - t == vc->vc_rows))
1692 || (scroll_partial
1693 && (b - t - count >
1694 3 * vc->vc_rows >> 2)))) {
1695 if (vc->vc_rows - b > 0)
1696 fbcon_bmove(vc, b, 0, b - count, 0,
1697 vc->vc_rows - b,
1698 vc->vc_cols);
1699 ypan_down(vc, count);
1700 if (t > 0)
1701 fbcon_bmove(vc, count, 0, 0, 0, t,
1702 vc->vc_cols);
1703 } else if (info->flags & FBINFO_READS_FAST)
1704 fbcon_bmove(vc, t, 0, t + count, 0,
1705 b - t - count, vc->vc_cols);
1706 else
1707 goto redraw_down;
1708 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1709 break;
1710
1711 case SCROLL_PAN_REDRAW:
1712 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1713 && ((!scroll_partial && (b - t == vc->vc_rows))
1714 || (scroll_partial
1715 && (b - t - count >
1716 3 * vc->vc_rows >> 2)))) {
1717 if (vc->vc_rows - b > 0)
1718 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1719 b - count);
1720 ypan_down_redraw(vc, t, count);
1721 if (t > 0)
1722 fbcon_redraw_move(vc, p, count, t, 0);
1723 } else
1724 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1725 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1726 break;
1727
1728 case SCROLL_REDRAW:
1729 redraw_down:
1730 fbcon_redraw(vc, p, b - 1, b - t - count,
1731 -count * vc->vc_cols);
1732 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1733 scr_memsetw((unsigned short *) (vc->vc_origin +
1734 vc->vc_size_row *
1735 t),
1736 vc->vc_video_erase_char,
1737 vc->vc_size_row * count);
1738 return 1;
1739 }
1740 }
1741 return 0;
1742}
1743
1744
1745static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
1746 int height, int width)
1747{
1748 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1749 struct display *p = &fb_display[vc->vc_num];
1750
1751 if (fbcon_is_inactive(vc, info))
1752 return;
1753
1754 if (!width || !height)
1755 return;
1756
1757 /* Split blits that cross physical y_wrap case.
1758 * Pathological case involves 4 blits, better to use recursive
1759 * code rather than unrolled case
1760 *
1761 * Recursive invocations don't need to erase the cursor over and
1762 * over again, so we use fbcon_bmove_rec()
1763 */
1764 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
1765 p->vrows - p->yscroll);
1766}
1767
1768static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
1769 int dy, int dx, int height, int width, u_int y_break)
1770{
1771 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1772 struct fbcon_ops *ops = info->fbcon_par;
1773 u_int b;
1774
1775 if (sy < y_break && sy + height > y_break) {
1776 b = y_break - sy;
1777 if (dy < sy) { /* Avoid trashing self */
1778 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1779 y_break);
1780 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1781 height - b, width, y_break);
1782 } else {
1783 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1784 height - b, width, y_break);
1785 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1786 y_break);
1787 }
1788 return;
1789 }
1790
1791 if (dy < y_break && dy + height > y_break) {
1792 b = y_break - dy;
1793 if (dy < sy) { /* Avoid trashing self */
1794 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1795 y_break);
1796 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1797 height - b, width, y_break);
1798 } else {
1799 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1800 height - b, width, y_break);
1801 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1802 y_break);
1803 }
1804 return;
1805 }
1806 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
1807 height, width);
1808}
1809
1810static __inline__ void updatescrollmode(struct display *p, struct fb_info *info,
1811 struct vc_data *vc)
1812{
1813 int fh = vc->vc_font.height;
1814 int cap = info->flags;
1815 int good_pan = (cap & FBINFO_HWACCEL_YPAN)
1816 && divides(info->fix.ypanstep, vc->vc_font.height)
1817 && info->var.yres_virtual > info->var.yres;
1818 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP)
1819 && divides(info->fix.ywrapstep, vc->vc_font.height)
1820 && divides(vc->vc_font.height, info->var.yres_virtual);
1821 int reading_fast = cap & FBINFO_READS_FAST;
1822 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && !(cap & FBINFO_HWACCEL_DISABLED);
1823 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && !(cap & FBINFO_HWACCEL_DISABLED);
1824
1825 p->vrows = info->var.yres_virtual/fh;
1826 if (info->var.yres > (fh * (vc->vc_rows + 1)))
1827 p->vrows -= (info->var.yres - (fh * vc->vc_rows)) / fh;
1828 if ((info->var.yres % fh) && (info->var.yres_virtual % fh <
1829 info->var.yres % fh))
1830 p->vrows--;
1831
1832 if (good_wrap || good_pan) {
1833 if (reading_fast || fast_copyarea)
1834 p->scrollmode = good_wrap ? SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1835 else
1836 p->scrollmode = good_wrap ? SCROLL_REDRAW :
1837 SCROLL_PAN_REDRAW;
1838 } else {
1839 if (reading_fast || (fast_copyarea && !fast_imageblit))
1840 p->scrollmode = SCROLL_MOVE;
1841 else
1842 p->scrollmode = SCROLL_REDRAW;
1843 }
1844}
1845
1846static int fbcon_resize(struct vc_data *vc, unsigned int width,
1847 unsigned int height)
1848{
1849 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1850 struct display *p = &fb_display[vc->vc_num];
1851 struct fb_var_screeninfo var = info->var;
1852 int x_diff, y_diff;
1853 int fw = vc->vc_font.width;
1854 int fh = vc->vc_font.height;
1855
1856 var.xres = width * fw;
1857 var.yres = height * fh;
1858 x_diff = info->var.xres - var.xres;
1859 y_diff = info->var.yres - var.yres;
1860 if (x_diff < 0 || x_diff > fw || (y_diff < 0 || y_diff > fh)) {
1861 struct fb_videomode *mode;
1862
1863 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
1864 mode = fb_find_best_mode(&var, &info->modelist);
1865 if (mode == NULL)
1866 return -EINVAL;
1867 fb_videomode_to_var(&var, mode);
1868 if (width > var.xres/fw || height > var.yres/fh)
1869 return -EINVAL;
1870 /*
1871 * The following can probably have any value... Do we need to
1872 * set all of them?
1873 */
1874 var.bits_per_pixel = p->bits_per_pixel;
1875 var.xres_virtual = p->xres_virtual;
1876 var.yres_virtual = p->yres_virtual;
1877 var.accel_flags = p->accel_flags;
1878 var.width = p->width;
1879 var.height = p->height;
1880 var.red = p->red;
1881 var.green = p->green;
1882 var.blue = p->blue;
1883 var.transp = p->transp;
1884 var.nonstd = p->nonstd;
1885
1886 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
1887 if (CON_IS_VISIBLE(vc)) {
1888 var.activate = FB_ACTIVATE_NOW |
1889 FB_ACTIVATE_FORCE;
1890 fb_set_var(info, &var);
1891 }
1892 var_to_display(p, &info->var, info);
1893 }
1894 updatescrollmode(p, info, vc);
1895 return 0;
1896}
1897
1898static int fbcon_switch(struct vc_data *vc)
1899{
1900 struct fb_info *info;
1901 struct display *p = &fb_display[vc->vc_num];
1902 struct fb_var_screeninfo var;
1903 int i, prev_console;
1904
1905 info = registered_fb[con2fb_map[vc->vc_num]];
1906
1907 if (softback_top) {
1908 int l = fbcon_softback_size / vc->vc_size_row;
1909 if (softback_lines)
1910 fbcon_set_origin(vc);
1911 softback_top = softback_curr = softback_in = softback_buf;
1912 softback_lines = 0;
1913
1914 if (l > 5)
1915 softback_end = softback_buf + l * vc->vc_size_row;
1916 else {
1917 /* Smaller scrollback makes no sense, and 0 would screw
1918 the operation totally */
1919 softback_top = 0;
1920 }
1921 }
1922
1923 if (logo_shown >= 0) {
1924 struct vc_data *conp2 = vc_cons[logo_shown].d;
1925
1926 if (conp2->vc_top == logo_lines
1927 && conp2->vc_bottom == conp2->vc_rows)
1928 conp2->vc_top = 0;
1929 logo_shown = FBCON_LOGO_CANSHOW;
1930 }
1931
1932 prev_console = ((struct fbcon_ops *)info->fbcon_par)->currcon;
1933
1934 /*
1935 * FIXME: If we have multiple fbdev's loaded, we need to
1936 * update all info->currcon. Perhaps, we can place this
1937 * in a centralized structure, but this might break some
1938 * drivers.
1939 *
1940 * info->currcon = vc->vc_num;
1941 */
1942 for (i = 0; i < FB_MAX; i++) {
1943 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
1944 struct fbcon_ops *ops = registered_fb[i]->fbcon_par;
1945
1946 ops->currcon = vc->vc_num;
1947 }
1948 }
1949 memset(&var, 0, sizeof(struct fb_var_screeninfo));
1950 display_to_var(&var, p);
1951 var.activate = FB_ACTIVATE_NOW;
1952
1953 /*
1954 * make sure we don't unnecessarily trip the memcmp()
1955 * in fb_set_var()
1956 */
1957 info->var.activate = var.activate;
1958 info->var.yoffset = info->var.xoffset = p->yscroll = 0;
1959 fb_set_var(info, &var);
1960
1961 if (prev_console != -1 &&
1962 registered_fb[con2fb_map[prev_console]] != info &&
1963 info->fbops->fb_set_par)
1964 info->fbops->fb_set_par(info);
1965
1966 set_blitting_type(vc, info, p);
1967 ((struct fbcon_ops *)info->fbcon_par)->cursor_reset = 1;
1968
1969 vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1);
1970 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1971 updatescrollmode(p, info, vc);
1972
1973 switch (p->scrollmode) {
1974 case SCROLL_WRAP_MOVE:
1975 scrollback_phys_max = p->vrows - vc->vc_rows;
1976 break;
1977 case SCROLL_PAN_MOVE:
1978 case SCROLL_PAN_REDRAW:
1979 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
1980 if (scrollback_phys_max < 0)
1981 scrollback_phys_max = 0;
1982 break;
1983 default:
1984 scrollback_phys_max = 0;
1985 break;
1986 }
1987 scrollback_max = 0;
1988 scrollback_current = 0;
1989
1990 update_var(vc->vc_num, info);
1991 fbcon_set_palette(vc, color_table);
1992 fbcon_clear_margins(vc, 0);
1993
1994 if (logo_shown == FBCON_LOGO_DRAW) {
1995
1996 logo_shown = fg_console;
1997 /* This is protected above by initmem_freed */
1998 fb_show_logo(info);
1999 update_region(vc,
2000 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2001 vc->vc_size_row * (vc->vc_bottom -
2002 vc->vc_top) / 2);
2003 return 0;
2004 }
2005 return 1;
2006}
2007
2008static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2009 int blank)
2010{
2011 if (blank) {
2012 unsigned short charmask = vc->vc_hi_font_mask ?
2013 0x1ff : 0xff;
2014 unsigned short oldc;
2015
2016 oldc = vc->vc_video_erase_char;
2017 vc->vc_video_erase_char &= charmask;
2018 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2019 vc->vc_video_erase_char = oldc;
2020 }
2021}
2022
2023static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2024{
2025 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2026 struct fbcon_ops *ops = info->fbcon_par;
2027
2028 if (mode_switch) {
2029 struct fb_var_screeninfo var = info->var;
2030
2031 ops->graphics = 1;
2032
2033 if (!blank) {
2034 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2035 fb_set_var(info, &var);
2036 ops->graphics = 0;
2037 }
2038 }
2039
2040 if (!fbcon_is_inactive(vc, info)) {
2041 if (ops->blank_state != blank) {
2042 ops->blank_state = blank;
2043 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2044 ops->cursor_flash = (!blank);
2045
2046 if (fb_blank(info, blank))
2047 fbcon_generic_blank(vc, info, blank);
2048 }
2049
2050 if (!blank)
2051 update_screen(vc);
2052 }
2053
2054 return 0;
2055}
2056
2057static void fbcon_free_font(struct display *p)
2058{
2059 if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
2060 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
2061 p->fontdata = NULL;
2062 p->userfont = 0;
2063}
2064
2065static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2066{
2067 u8 *fontdata = vc->vc_font.data;
2068 u8 *data = font->data;
2069 int i, j;
2070
2071 font->width = vc->vc_font.width;
2072 font->height = vc->vc_font.height;
2073 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2074 if (!font->data)
2075 return 0;
2076
2077 if (font->width <= 8) {
2078 j = vc->vc_font.height;
2079 for (i = 0; i < font->charcount; i++) {
2080 memcpy(data, fontdata, j);
2081 memset(data + j, 0, 32 - j);
2082 data += 32;
2083 fontdata += j;
2084 }
2085 } else if (font->width <= 16) {
2086 j = vc->vc_font.height * 2;
2087 for (i = 0; i < font->charcount; i++) {
2088 memcpy(data, fontdata, j);
2089 memset(data + j, 0, 64 - j);
2090 data += 64;
2091 fontdata += j;
2092 }
2093 } else if (font->width <= 24) {
2094 for (i = 0; i < font->charcount; i++) {
2095 for (j = 0; j < vc->vc_font.height; j++) {
2096 *data++ = fontdata[0];
2097 *data++ = fontdata[1];
2098 *data++ = fontdata[2];
2099 fontdata += sizeof(u32);
2100 }
2101 memset(data, 0, 3 * (32 - j));
2102 data += 3 * (32 - j);
2103 }
2104 } else {
2105 j = vc->vc_font.height * 4;
2106 for (i = 0; i < font->charcount; i++) {
2107 memcpy(data, fontdata, j);
2108 memset(data + j, 0, 128 - j);
2109 data += 128;
2110 fontdata += j;
2111 }
2112 }
2113 return 0;
2114}
2115
2116static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2117 u8 * data, int userfont)
2118{
2119 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2120 struct display *p = &fb_display[vc->vc_num];
2121 int resize;
2122 int cnt;
2123 char *old_data = NULL;
2124
2125 if (CON_IS_VISIBLE(vc) && softback_lines)
2126 fbcon_set_origin(vc);
2127
2128 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2129 if (p->userfont)
2130 old_data = vc->vc_font.data;
2131 if (userfont)
2132 cnt = FNTCHARCNT(data);
2133 else
2134 cnt = 256;
2135 vc->vc_font.data = p->fontdata = data;
2136 if ((p->userfont = userfont))
2137 REFCOUNT(data)++;
2138 vc->vc_font.width = w;
2139 vc->vc_font.height = h;
2140 if (vc->vc_hi_font_mask && cnt == 256) {
2141 vc->vc_hi_font_mask = 0;
2142 if (vc->vc_can_do_color) {
2143 vc->vc_complement_mask >>= 1;
2144 vc->vc_s_complement_mask >>= 1;
2145 }
2146
2147 /* ++Edmund: reorder the attribute bits */
2148 if (vc->vc_can_do_color) {
2149 unsigned short *cp =
2150 (unsigned short *) vc->vc_origin;
2151 int count = vc->vc_screenbuf_size / 2;
2152 unsigned short c;
2153 for (; count > 0; count--, cp++) {
2154 c = scr_readw(cp);
2155 scr_writew(((c & 0xfe00) >> 1) |
2156 (c & 0xff), cp);
2157 }
2158 c = vc->vc_video_erase_char;
2159 vc->vc_video_erase_char =
2160 ((c & 0xfe00) >> 1) | (c & 0xff);
2161 vc->vc_attr >>= 1;
2162 }
2163 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2164 vc->vc_hi_font_mask = 0x100;
2165 if (vc->vc_can_do_color) {
2166 vc->vc_complement_mask <<= 1;
2167 vc->vc_s_complement_mask <<= 1;
2168 }
2169
2170 /* ++Edmund: reorder the attribute bits */
2171 {
2172 unsigned short *cp =
2173 (unsigned short *) vc->vc_origin;
2174 int count = vc->vc_screenbuf_size / 2;
2175 unsigned short c;
2176 for (; count > 0; count--, cp++) {
2177 unsigned short newc;
2178 c = scr_readw(cp);
2179 if (vc->vc_can_do_color)
2180 newc =
2181 ((c & 0xff00) << 1) | (c &
2182 0xff);
2183 else
2184 newc = c & ~0x100;
2185 scr_writew(newc, cp);
2186 }
2187 c = vc->vc_video_erase_char;
2188 if (vc->vc_can_do_color) {
2189 vc->vc_video_erase_char =
2190 ((c & 0xff00) << 1) | (c & 0xff);
2191 vc->vc_attr <<= 1;
2192 } else
2193 vc->vc_video_erase_char = c & ~0x100;
2194 }
2195
2196 }
2197
2198 if (resize) {
2199 /* reset wrap/pan */
2200 info->var.xoffset = info->var.yoffset = p->yscroll = 0;
2201 vc_resize(vc, info->var.xres / w, info->var.yres / h);
2202 if (CON_IS_VISIBLE(vc) && softback_buf) {
2203 int l = fbcon_softback_size / vc->vc_size_row;
2204 if (l > 5)
2205 softback_end =
2206 softback_buf + l * vc->vc_size_row;
2207 else {
2208 /* Smaller scrollback makes no sense, and 0 would screw
2209 the operation totally */
2210 softback_top = 0;
2211 }
2212 }
2213 } else if (CON_IS_VISIBLE(vc)
2214 && vc->vc_mode == KD_TEXT) {
2215 fbcon_clear_margins(vc, 0);
2216 update_screen(vc);
2217 }
2218
2219 if (old_data && (--REFCOUNT(old_data) == 0))
2220 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2221 return 0;
2222}
2223
2224static int fbcon_copy_font(struct vc_data *vc, int con)
2225{
2226 struct display *od = &fb_display[con];
2227 struct console_font *f = &vc->vc_font;
2228
2229 if (od->fontdata == f->data)
2230 return 0; /* already the same font... */
2231 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2232}
2233
2234/*
2235 * User asked to set font; we are guaranteed that
2236 * a) width and height are in range 1..32
2237 * b) charcount does not exceed 512
2238 * but lets not assume that, since someone might someday want to use larger
2239 * fonts. And charcount of 512 is small for unicode support.
2240 *
2241 * However, user space gives the font in 32 rows , regardless of
2242 * actual font height. So a new API is needed if support for larger fonts
2243 * is ever implemented.
2244 */
2245
2246static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2247{
2248 unsigned charcount = font->charcount;
2249 int w = font->width;
2250 int h = font->height;
2251 int size;
2252 int i, csum;
2253 u8 *new_data, *data = font->data;
2254 int pitch = (font->width+7) >> 3;
2255
2256 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2257 * If not this check should be changed to charcount < 256 */
2258 if (charcount != 256 && charcount != 512)
2259 return -EINVAL;
2260
2261 size = h * pitch * charcount;
2262
2263 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2264
2265 if (!new_data)
2266 return -ENOMEM;
2267
2268 new_data += FONT_EXTRA_WORDS * sizeof(int);
2269 FNTSIZE(new_data) = size;
2270 FNTCHARCNT(new_data) = charcount;
2271 REFCOUNT(new_data) = 0; /* usage counter */
2272 for (i=0; i< charcount; i++) {
2273 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2274 }
2275
2276 /* Since linux has a nice crc32 function use it for counting font
2277 * checksums. */
2278 csum = crc32(0, new_data, size);
2279
2280 FNTSUM(new_data) = csum;
2281 /* Check if the same font is on some other console already */
2282 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2283 struct vc_data *tmp = vc_cons[i].d;
2284
2285 if (fb_display[i].userfont &&
2286 fb_display[i].fontdata &&
2287 FNTSUM(fb_display[i].fontdata) == csum &&
2288 FNTSIZE(fb_display[i].fontdata) == size &&
2289 tmp->vc_font.width == w &&
2290 !memcmp(fb_display[i].fontdata, new_data, size)) {
2291 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2292 new_data = fb_display[i].fontdata;
2293 break;
2294 }
2295 }
2296 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2297}
2298
2299static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2300{
2301 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2302 struct font_desc *f;
2303
2304 if (!name)
2305 f = get_default_font(info->var.xres, info->var.yres);
2306 else if (!(f = find_font(name)))
2307 return -ENOENT;
2308
2309 font->width = f->width;
2310 font->height = f->height;
2311 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2312}
2313
2314static u16 palette_red[16];
2315static u16 palette_green[16];
2316static u16 palette_blue[16];
2317
2318static struct fb_cmap palette_cmap = {
2319 0, 16, palette_red, palette_green, palette_blue, NULL
2320};
2321
2322static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2323{
2324 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2325 int i, j, k, depth;
2326 u8 val;
2327
2328 if (fbcon_is_inactive(vc, info))
2329 return -EINVAL;
2330
2331 if (!CON_IS_VISIBLE(vc))
2332 return 0;
2333
2334 depth = fb_get_color_depth(&info->var);
2335 if (depth > 3) {
2336 for (i = j = 0; i < 16; i++) {
2337 k = table[i];
2338 val = vc->vc_palette[j++];
2339 palette_red[k] = (val << 8) | val;
2340 val = vc->vc_palette[j++];
2341 palette_green[k] = (val << 8) | val;
2342 val = vc->vc_palette[j++];
2343 palette_blue[k] = (val << 8) | val;
2344 }
2345 palette_cmap.len = 16;
2346 palette_cmap.start = 0;
2347 /*
2348 * If framebuffer is capable of less than 16 colors,
2349 * use default palette of fbcon.
2350 */
2351 } else
2352 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2353
2354 return fb_set_cmap(&palette_cmap, info);
2355}
2356
2357static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2358{
2359 unsigned long p;
2360 int line;
2361
2362 if (vc->vc_num != fg_console || !softback_lines)
2363 return (u16 *) (vc->vc_origin + offset);
2364 line = offset / vc->vc_size_row;
2365 if (line >= softback_lines)
2366 return (u16 *) (vc->vc_origin + offset -
2367 softback_lines * vc->vc_size_row);
2368 p = softback_curr + offset;
2369 if (p >= softback_end)
2370 p += softback_buf - softback_end;
2371 return (u16 *) p;
2372}
2373
2374static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2375 int *px, int *py)
2376{
2377 unsigned long ret;
2378 int x, y;
2379
2380 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2381 unsigned long offset = (pos - vc->vc_origin) / 2;
2382
2383 x = offset % vc->vc_cols;
2384 y = offset / vc->vc_cols;
2385 if (vc->vc_num == fg_console)
2386 y += softback_lines;
2387 ret = pos + (vc->vc_cols - x) * 2;
2388 } else if (vc->vc_num == fg_console && softback_lines) {
2389 unsigned long offset = pos - softback_curr;
2390
2391 if (pos < softback_curr)
2392 offset += softback_end - softback_buf;
2393 offset /= 2;
2394 x = offset % vc->vc_cols;
2395 y = offset / vc->vc_cols;
2396 ret = pos + (vc->vc_cols - x) * 2;
2397 if (ret == softback_end)
2398 ret = softback_buf;
2399 if (ret == softback_in)
2400 ret = vc->vc_origin;
2401 } else {
2402 /* Should not happen */
2403 x = y = 0;
2404 ret = vc->vc_origin;
2405 }
2406 if (px)
2407 *px = x;
2408 if (py)
2409 *py = y;
2410 return ret;
2411}
2412
2413/* As we might be inside of softback, we may work with non-contiguous buffer,
2414 that's why we have to use a separate routine. */
2415static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2416{
2417 while (cnt--) {
2418 u16 a = scr_readw(p);
2419 if (!vc->vc_can_do_color)
2420 a ^= 0x0800;
2421 else if (vc->vc_hi_font_mask == 0x100)
2422 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2423 (((a) & 0x0e00) << 4);
2424 else
2425 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2426 (((a) & 0x0700) << 4);
2427 scr_writew(a, p++);
2428 if (p == (u16 *) softback_end)
2429 p = (u16 *) softback_buf;
2430 if (p == (u16 *) softback_in)
2431 p = (u16 *) vc->vc_origin;
2432 }
2433}
2434
2435static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2436{
2437 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2438 struct display *p = &fb_display[fg_console];
2439 int offset, limit, scrollback_old;
2440
2441 if (softback_top) {
2442 if (vc->vc_num != fg_console)
2443 return 0;
2444 if (vc->vc_mode != KD_TEXT || !lines)
2445 return 0;
2446 if (logo_shown >= 0) {
2447 struct vc_data *conp2 = vc_cons[logo_shown].d;
2448
2449 if (conp2->vc_top == logo_lines
2450 && conp2->vc_bottom == conp2->vc_rows)
2451 conp2->vc_top = 0;
2452 if (logo_shown == vc->vc_num) {
2453 unsigned long p, q;
2454 int i;
2455
2456 p = softback_in;
2457 q = vc->vc_origin +
2458 logo_lines * vc->vc_size_row;
2459 for (i = 0; i < logo_lines; i++) {
2460 if (p == softback_top)
2461 break;
2462 if (p == softback_buf)
2463 p = softback_end;
2464 p -= vc->vc_size_row;
2465 q -= vc->vc_size_row;
2466 scr_memcpyw((u16 *) q, (u16 *) p,
2467 vc->vc_size_row);
2468 }
2469 softback_in = p;
2470 update_region(vc, vc->vc_origin,
2471 logo_lines * vc->vc_cols);
2472 }
2473 logo_shown = FBCON_LOGO_CANSHOW;
2474 }
2475 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2476 fbcon_redraw_softback(vc, p, lines);
2477 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2478 return 0;
2479 }
2480
2481 if (!scrollback_phys_max)
2482 return -ENOSYS;
2483
2484 scrollback_old = scrollback_current;
2485 scrollback_current -= lines;
2486 if (scrollback_current < 0)
2487 scrollback_current = 0;
2488 else if (scrollback_current > scrollback_max)
2489 scrollback_current = scrollback_max;
2490 if (scrollback_current == scrollback_old)
2491 return 0;
2492
2493 if (fbcon_is_inactive(vc, info))
2494 return 0;
2495
2496 fbcon_cursor(vc, CM_ERASE);
2497
2498 offset = p->yscroll - scrollback_current;
2499 limit = p->vrows;
2500 switch (p->scrollmode) {
2501 case SCROLL_WRAP_MOVE:
2502 info->var.vmode |= FB_VMODE_YWRAP;
2503 break;
2504 case SCROLL_PAN_MOVE:
2505 case SCROLL_PAN_REDRAW:
2506 limit -= vc->vc_rows;
2507 info->var.vmode &= ~FB_VMODE_YWRAP;
2508 break;
2509 }
2510 if (offset < 0)
2511 offset += limit;
2512 else if (offset >= limit)
2513 offset -= limit;
2514 info->var.xoffset = 0;
2515 info->var.yoffset = offset * vc->vc_font.height;
2516 update_var(vc->vc_num, info);
2517 if (!scrollback_current)
2518 fbcon_cursor(vc, CM_DRAW);
2519 return 0;
2520}
2521
2522static int fbcon_set_origin(struct vc_data *vc)
2523{
2524 if (softback_lines)
2525 fbcon_scrolldelta(vc, softback_lines);
2526 return 0;
2527}
2528
2529static void fbcon_suspended(struct fb_info *info)
2530{
2531 struct vc_data *vc = NULL;
2532 struct fbcon_ops *ops = info->fbcon_par;
2533
2534 if (!ops || ops->currcon < 0)
2535 return;
2536 vc = vc_cons[ops->currcon].d;
2537
2538 /* Clear cursor, restore saved data */
2539 fbcon_cursor(vc, CM_ERASE);
2540}
2541
2542static void fbcon_resumed(struct fb_info *info)
2543{
2544 struct vc_data *vc;
2545 struct fbcon_ops *ops = info->fbcon_par;
2546
2547 if (!ops || ops->currcon < 0)
2548 return;
2549 vc = vc_cons[ops->currcon].d;
2550
2551 update_screen(vc);
2552}
2553
2554static void fbcon_modechanged(struct fb_info *info)
2555{
2556 struct fbcon_ops *ops = info->fbcon_par;
2557 struct vc_data *vc;
2558 struct display *p;
2559 int rows, cols;
2560
2561 if (!ops || ops->currcon < 0)
2562 return;
2563 vc = vc_cons[ops->currcon].d;
2564 if (vc->vc_mode != KD_TEXT || registered_fb[con2fb_map[ops->currcon]] != info)
2565 return;
2566
2567 p = &fb_display[vc->vc_num];
2568
2569 info->var.xoffset = info->var.yoffset = p->yscroll = 0;
2570
2571 if (CON_IS_VISIBLE(vc)) {
2572 var_to_display(p, &info->var, info);
2573 cols = info->var.xres / vc->vc_font.width;
2574 rows = info->var.yres / vc->vc_font.height;
2575 vc_resize(vc, cols, rows);
2576 updatescrollmode(p, info, vc);
2577 scrollback_max = 0;
2578 scrollback_current = 0;
2579 update_var(vc->vc_num, info);
2580 fbcon_set_palette(vc, color_table);
2581 update_screen(vc);
2582 if (softback_buf) {
2583 int l = fbcon_softback_size / vc->vc_size_row;
2584 if (l > 5)
2585 softback_end = softback_buf + l * vc->vc_size_row;
2586 else {
2587 /* Smaller scrollback makes no sense, and 0
2588 would screw the operation totally */
2589 softback_top = 0;
2590 }
2591 }
2592 }
2593}
2594
2595static int fbcon_mode_deleted(struct fb_info *info,
2596 struct fb_videomode *mode)
2597{
2598 struct fb_info *fb_info;
2599 struct display *p;
2600 int i, j, found = 0;
2601
2602 /* before deletion, ensure that mode is not in use */
2603 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2604 j = con2fb_map[i];
2605 if (j == -1)
2606 continue;
2607 fb_info = registered_fb[j];
2608 if (fb_info != info)
2609 continue;
2610 p = &fb_display[i];
2611 if (!p || !p->mode)
2612 continue;
2613 if (fb_mode_is_equal(p->mode, mode)) {
2614 found = 1;
2615 break;
2616 }
2617 }
2618 return found;
2619}
2620
2621static int fbcon_fb_registered(int idx)
2622{
2623 int ret = 0, i;
2624
2625 if (info_idx == -1) {
2626 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2627 if (con2fb_map_boot[i] == idx) {
2628 info_idx = idx;
2629 break;
2630 }
2631 }
2632 if (info_idx != -1)
2633 ret = fbcon_takeover(1);
2634 } else {
2635 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2636 if (con2fb_map_boot[i] == idx)
2637 set_con2fb_map(i, idx, 0);
2638 }
2639 }
2640
2641 return ret;
2642}
2643
2644static void fbcon_fb_blanked(struct fb_info *info, int blank)
2645{
2646 struct fbcon_ops *ops = info->fbcon_par;
2647 struct vc_data *vc;
2648
2649 if (!ops || ops->currcon < 0)
2650 return;
2651
2652 vc = vc_cons[ops->currcon].d;
2653 if (vc->vc_mode != KD_TEXT ||
2654 registered_fb[con2fb_map[ops->currcon]] != info)
2655 return;
2656
2657 if (CON_IS_VISIBLE(vc)) {
2658 if (blank)
2659 do_blank_screen(0);
2660 else
2661 do_unblank_screen(0);
2662 }
2663 ops->blank_state = blank;
2664}
2665
2666static void fbcon_new_modelist(struct fb_info *info)
2667{
2668 int i;
2669 struct vc_data *vc;
2670 struct fb_var_screeninfo var;
2671 struct fb_videomode *mode;
2672
2673 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2674 if (registered_fb[con2fb_map[i]] != info)
2675 continue;
2676 if (!fb_display[i].mode)
2677 continue;
2678 vc = vc_cons[i].d;
2679 display_to_var(&var, &fb_display[i]);
2680 mode = fb_find_nearest_mode(&var, &info->modelist);
2681 fb_videomode_to_var(&var, mode);
2682
2683 if (vc)
2684 fbcon_set_disp(info, &var, vc);
2685 else
2686 fbcon_preset_disp(info, &var, i);
2687
2688 }
2689}
2690
2691static int fbcon_event_notify(struct notifier_block *self,
2692 unsigned long action, void *data)
2693{
2694 struct fb_event *event = data;
2695 struct fb_info *info = event->info;
2696 struct fb_videomode *mode;
2697 struct fb_con2fbmap *con2fb;
2698 int ret = 0;
2699
2700 switch(action) {
2701 case FB_EVENT_SUSPEND:
2702 fbcon_suspended(info);
2703 break;
2704 case FB_EVENT_RESUME:
2705 fbcon_resumed(info);
2706 break;
2707 case FB_EVENT_MODE_CHANGE:
2708 fbcon_modechanged(info);
2709 break;
2710 case FB_EVENT_MODE_DELETE:
2711 mode = event->data;
2712 ret = fbcon_mode_deleted(info, mode);
2713 break;
2714 case FB_EVENT_FB_REGISTERED:
2715 ret = fbcon_fb_registered(info->node);
2716 break;
2717 case FB_EVENT_SET_CONSOLE_MAP:
2718 con2fb = event->data;
2719 ret = set_con2fb_map(con2fb->console - 1,
2720 con2fb->framebuffer, 1);
2721 break;
2722 case FB_EVENT_GET_CONSOLE_MAP:
2723 con2fb = event->data;
2724 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
2725 break;
2726 case FB_EVENT_BLANK:
2727 fbcon_fb_blanked(info, *(int *)event->data);
2728 break;
2729 case FB_EVENT_NEW_MODELIST:
2730 fbcon_new_modelist(info);
2731 break;
2732 }
2733
2734 return ret;
2735}
2736
2737/*
2738 * The console `switch' structure for the frame buffer based console
2739 */
2740
2741static const struct consw fb_con = {
2742 .owner = THIS_MODULE,
2743 .con_startup = fbcon_startup,
2744 .con_init = fbcon_init,
2745 .con_deinit = fbcon_deinit,
2746 .con_clear = fbcon_clear,
2747 .con_putc = fbcon_putc,
2748 .con_putcs = fbcon_putcs,
2749 .con_cursor = fbcon_cursor,
2750 .con_scroll = fbcon_scroll,
2751 .con_bmove = fbcon_bmove,
2752 .con_switch = fbcon_switch,
2753 .con_blank = fbcon_blank,
2754 .con_font_set = fbcon_set_font,
2755 .con_font_get = fbcon_get_font,
2756 .con_font_default = fbcon_set_def_font,
2757 .con_font_copy = fbcon_copy_font,
2758 .con_set_palette = fbcon_set_palette,
2759 .con_scrolldelta = fbcon_scrolldelta,
2760 .con_set_origin = fbcon_set_origin,
2761 .con_invert_region = fbcon_invert_region,
2762 .con_screen_pos = fbcon_screen_pos,
2763 .con_getxy = fbcon_getxy,
2764 .con_resize = fbcon_resize,
2765};
2766
2767static struct notifier_block fbcon_event_notifier = {
2768 .notifier_call = fbcon_event_notify,
2769};
2770
2771static int __init fb_console_init(void)
2772{
2773 int i;
2774
2775 acquire_console_sem();
2776 fb_register_client(&fbcon_event_notifier);
2777 release_console_sem();
2778
2779 for (i = 0; i < MAX_NR_CONSOLES; i++)
2780 con2fb_map[i] = -1;
2781
2782 if (num_registered_fb) {
2783 for (i = 0; i < FB_MAX; i++) {
2784 if (registered_fb[i] != NULL) {
2785 info_idx = i;
2786 break;
2787 }
2788 }
2789 fbcon_takeover(0);
2790 }
2791
2792 return 0;
2793}
2794
2795module_init(fb_console_init);
2796
2797#ifdef MODULE
2798
2799static void __exit fb_console_exit(void)
2800{
2801 acquire_console_sem();
2802 fb_unregister_client(&fbcon_event_notifier);
2803 release_console_sem();
2804 give_up_console(&fb_con);
2805}
2806
2807module_exit(fb_console_exit);
2808
2809#endif
2810
2811MODULE_LICENSE("GPL");
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