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fbcon: cursor blink control
[mirror_ubuntu-artful-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
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 */
78#include <asm/irq.h>
79#include <asm/system.h>
80#include <asm/uaccess.h>
81#ifdef CONFIG_ATARI
82#include <asm/atariints.h>
83#endif
84#ifdef CONFIG_MAC
85#include <asm/macints.h>
86#endif
87#if defined(__mc68000__) || defined(CONFIG_APUS)
88#include <asm/machdep.h>
89#include <asm/setup.h>
90#endif
91
92#include "fbcon.h"
93
94#ifdef FBCONDEBUG
95# define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
96#else
97# define DPRINTK(fmt, args...)
98#endif
99
100enum {
101 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
102 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
103 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */
104};
105
ab767201 106static struct display fb_display[MAX_NR_CONSOLES];
e4fc2761 107
1da177e4
LT		 108static signed char con2fb_map[MAX_NR_CONSOLES];
109static signed char con2fb_map_boot[MAX_NR_CONSOLES];
70802c60 110#ifndef MODULE
1da177e4 111static int logo_height;
70802c60 112#endif
1da177e4
LT		 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;
e614b18d
AD		 127static int fbcon_has_exited;
128
1da177e4
LT		 129/* font data */
130static char fontname[40];
131
132/* current fb_info */
133static int info_idx = -1;
134
e4fc2761
AD		 135/* console rotation */
136static int rotate;
0a727dea 137static int fbcon_has_sysfs;
e4fc2761 138
1da177e4
LT		 139static const struct consw fb_con;
140
141#define CM_SOFTBACK (8)
142
143#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
144
1da177e4
LT		 145static int fbcon_set_origin(struct vc_data *);
146
147#define CURSOR_DRAW_DELAY (1)
148
149/* # VBL ints between cursor state changes */
1da177e4
LT		 150#define ATARI_CURSOR_BLINK_RATE (42)
151#define MAC_CURSOR_BLINK_RATE (32)
152#define DEFAULT_CURSOR_BLINK_RATE (20)
153
154static int vbl_cursor_cnt;
acba9cd0 155static int fbcon_cursor_noblink;
1da177e4
LT		 156
157#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
158
159/*
160 * Interface used by the world
161 */
162
163static const char *fbcon_startup(void);
164static void fbcon_init(struct vc_data *vc, int init);
165static void fbcon_deinit(struct vc_data *vc);
166static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
167 int width);
168static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
169static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
170 int count, int ypos, int xpos);
171static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
172static void fbcon_cursor(struct vc_data *vc, int mode);
173static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
174 int count);
175static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
176 int height, int width);
177static int fbcon_switch(struct vc_data *vc);
178static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
179static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
180static int fbcon_scrolldelta(struct vc_data *vc, int lines);
181
182/*
183 * Internal routines
184 */
1da177e4
LT		 185static __inline__ void ywrap_up(struct vc_data *vc, int count);
186static __inline__ void ywrap_down(struct vc_data *vc, int count);
187static __inline__ void ypan_up(struct vc_data *vc, int count);
188static __inline__ void ypan_down(struct vc_data *vc, int count);
189static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
190 int dy, int dx, int height, int width, u_int y_break);
191static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
192 struct vc_data *vc);
193static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
194 int unit);
195static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
196 int line, int count, int dy);
a812c94b
AD		 197static void fbcon_modechanged(struct fb_info *info);
198static void fbcon_set_all_vcs(struct fb_info *info);
5428b044
AD		 199static void fbcon_start(void);
200static void fbcon_exit(void);
9a179176
AD		 201static struct class_device *fbcon_class_device;
202
1da177e4
LT		 203#ifdef CONFIG_MAC
204/*
205 * On the Macintoy, there may or may not be a working VBL int. We need to probe
206 */
207static int vbl_detected;
208
7d12e780 209static irqreturn_t fb_vbl_detect(int irq, void *dummy)
1da177e4
LT		 210{
211 vbl_detected++;
212 return IRQ_HANDLED;
213}
214#endif
215
dbcbfe1e 216#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
b73deed3 217static inline void fbcon_set_rotation(struct fb_info *info)
dbcbfe1e
AD		 218{
219 struct fbcon_ops *ops = info->fbcon_par;
220
221 if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
b73deed3
AD		 222 ops->p->con_rotate < 4)
223 ops->rotate = ops->p->con_rotate;
dbcbfe1e
AD		 224 else
225 ops->rotate = 0;
226}
a812c94b
AD		 227
228static void fbcon_rotate(struct fb_info *info, u32 rotate)
229{
230 struct fbcon_ops *ops= info->fbcon_par;
231 struct fb_info *fb_info;
232
233 if (!ops || ops->currcon == -1)
234 return;
235
236 fb_info = registered_fb[con2fb_map[ops->currcon]];
237
238 if (info == fb_info) {
239 struct display *p = &fb_display[ops->currcon];
240
241 if (rotate < 4)
242 p->con_rotate = rotate;
243 else
244 p->con_rotate = 0;
245
246 fbcon_modechanged(info);
247 }
248}
249
250static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
251{
252 struct fbcon_ops *ops = info->fbcon_par;
253 struct vc_data *vc;
254 struct display *p;
255 int i;
256
257 if (!ops || ops->currcon < 0 || rotate > 3)
258 return;
259
e614b18d 260 for (i = first_fb_vc; i <= last_fb_vc; i++) {
a812c94b
AD		 261 vc = vc_cons[i].d;
262 if (!vc || vc->vc_mode != KD_TEXT ||
263 registered_fb[con2fb_map[i]] != info)
264 continue;
265
266 p = &fb_display[vc->vc_num];
267 p->con_rotate = rotate;
268 }
269
270 fbcon_set_all_vcs(info);
271}
dbcbfe1e 272#else
b73deed3 273static inline void fbcon_set_rotation(struct fb_info *info)
e4fc2761
AD		 274{
275 struct fbcon_ops *ops = info->fbcon_par;
276
277 ops->rotate = FB_ROTATE_UR;
278}
a812c94b
AD		 279
280static void fbcon_rotate(struct fb_info *info, u32 rotate)
281{
282 return;
283}
284
285static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
286{
287 return;
288}
dbcbfe1e 289#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
e4fc2761 290
a812c94b
AD		 291static int fbcon_get_rotate(struct fb_info *info)
292{
293 struct fbcon_ops *ops = info->fbcon_par;
294
295 return (ops) ? ops->rotate : 0;
296}
297
1da177e4
LT		 298static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
299{
300 struct fbcon_ops *ops = info->fbcon_par;
301
302 return (info->state != FBINFO_STATE_RUNNING ||
303 vc->vc_mode != KD_TEXT || ops->graphics);
304}
305
306static inline int get_color(struct vc_data *vc, struct fb_info *info,
307 u16 c, int is_fg)
308{
b8c90945 309 int depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 310 int color = 0;
311
312 if (console_blanked) {
313 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
314
315 c = vc->vc_video_erase_char & charmask;
316 }
317
318 if (depth != 1)
319 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
320 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
321
322 switch (depth) {
323 case 1:
324 {
b8c90945
AD		 325 int col = ~(0xfff << (max(info->var.green.length,
326 max(info->var.red.length,
327 info->var.blue.length)))) & 0xff;
328
1da177e4 329 /* 0 or 1 */
b8c90945
AD		 330 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
331 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
1da177e4
LT		 332
333 if (console_blanked)
334 fg = bg;
335
336 color = (is_fg) ? fg : bg;
337 break;
338 }
339 case 2:
340 /*
341 * Scale down 16-colors to 4 colors. Default 4-color palette
2cc38ed1
AD		 342 * is grayscale. However, simply dividing the values by 4
343 * will not work, as colors 1, 2 and 3 will be scaled-down
344 * to zero rendering them invisible. So empirically convert
345 * colors to a sane 4-level grayscale.
1da177e4 346 */
2cc38ed1
AD		 347 switch (color) {
348 case 0:
349 color = 0; /* black */
350 break;
351 case 1 ... 6:
352 color = 2; /* white */
353 break;
354 case 7 ... 8:
355 color = 1; /* gray */
356 break;
357 default:
358 color = 3; /* intense white */
359 break;
360 }
361 break;
1da177e4
LT		 362 case 3:
363 /*
364 * Last 8 entries of default 16-color palette is a more intense
365 * version of the first 8 (i.e., same chrominance, different
366 * luminance).
367 */
368 color &= 7;
369 break;
370 }
371
372
373 return color;
374}
375
4d9c5b6e
AD		 376static void fbcon_update_softback(struct vc_data *vc)
377{
378 int l = fbcon_softback_size / vc->vc_size_row;
379
380 if (l > 5)
381 softback_end = softback_buf + l * vc->vc_size_row;
382 else
383 /* Smaller scrollback makes no sense, and 0 would screw
384 the operation totally */
385 softback_top = 0;
386}
387
c4028958 388static void fb_flashcursor(struct work_struct *work)
1da177e4 389{
c4028958 390 struct fb_info *info = container_of(work, struct fb_info, queue);
1da177e4
LT		 391 struct fbcon_ops *ops = info->fbcon_par;
392 struct display *p;
393 struct vc_data *vc = NULL;
394 int c;
395 int mode;
396
5428b044
AD		 397 acquire_console_sem();
398 if (ops && ops->currcon != -1)
1da177e4
LT		 399 vc = vc_cons[ops->currcon].d;
400
401 if (!vc || !CON_IS_VISIBLE(vc) ||
dbd4f128 402 registered_fb[con2fb_map[vc->vc_num]] != info ||
212f2639 403 vc->vc_deccm != 1) {
5428b044 404 release_console_sem();
1da177e4 405 return;
5428b044
AD		 406 }
407
1da177e4
LT		 408 p = &fb_display[vc->vc_num];
409 c = scr_readw((u16 *) vc->vc_pos);
410 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
411 CM_ERASE : CM_DRAW;
b73deed3 412 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
1da177e4
LT		 413 get_color(vc, info, c, 0));
414 release_console_sem();
415}
416
41359dca 417#if defined(CONFIG_ATARI) || defined(CONFIG_MAC)
1da177e4 418static int cursor_blink_rate;
7d12e780 419static irqreturn_t fb_vbl_handler(int irq, void *dev_id)
1da177e4
LT		 420{
421 struct fb_info *info = dev_id;
422
423 if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) {
424 schedule_work(&info->queue);
425 vbl_cursor_cnt = cursor_blink_rate;
426 }
427 return IRQ_HANDLED;
428}
429#endif
430
431static void cursor_timer_handler(unsigned long dev_addr)
432{
433 struct fb_info *info = (struct fb_info *) dev_addr;
434 struct fbcon_ops *ops = info->fbcon_par;
435
436 schedule_work(&info->queue);
437 mod_timer(&ops->cursor_timer, jiffies + HZ/5);
438}
439
88fb2c6e
AD		 440static void fbcon_add_cursor_timer(struct fb_info *info)
441{
442 struct fbcon_ops *ops = info->fbcon_par;
443
444 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
acba9cd0
AD		 445 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
446 !fbcon_cursor_noblink) {
88fb2c6e 447 if (!info->queue.func)
c4028958 448 INIT_WORK(&info->queue, fb_flashcursor);
88fb2c6e
AD		 449
450 init_timer(&ops->cursor_timer);
451 ops->cursor_timer.function = cursor_timer_handler;
452 ops->cursor_timer.expires = jiffies + HZ / 5;
453 ops->cursor_timer.data = (unsigned long ) info;
454 add_timer(&ops->cursor_timer);
455 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
456 }
457}
458
459static void fbcon_del_cursor_timer(struct fb_info *info)
460{
461 struct fbcon_ops *ops = info->fbcon_par;
462
463 if (info->queue.func == fb_flashcursor &&
464 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
465 del_timer_sync(&ops->cursor_timer);
466 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
467 }
468}
469
1da177e4
LT		 470#ifndef MODULE
471static int __init fb_console_setup(char *this_opt)
472{
473 char *options;
474 int i, j;
475
476 if (!this_opt || !*this_opt)
9b41046c 477 return 1;
1da177e4
LT		 478
479 while ((options = strsep(&this_opt, ",")) != NULL) {
480 if (!strncmp(options, "font:", 5))
481 strcpy(fontname, options + 5);
482
483 if (!strncmp(options, "scrollback:", 11)) {
484 options += 11;
485 if (*options) {
486 fbcon_softback_size = simple_strtoul(options, &options, 0);
487 if (*options == 'k' || *options == 'K') {
488 fbcon_softback_size *= 1024;
489 options++;
490 }
491 if (*options != ',')
9b41046c 492 return 1;
1da177e4
LT		 493 options++;
494 } else
9b41046c 495 return 1;
1da177e4
LT		 496 }
497
498 if (!strncmp(options, "map:", 4)) {
499 options += 4;
500 if (*options)
501 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
502 if (!options[j])
503 j = 0;
504 con2fb_map_boot[i] =
505 (options[j++]-'0') % FB_MAX;
506 }
9b41046c 507 return 1;
1da177e4
LT		 508 }
509
510 if (!strncmp(options, "vc:", 3)) {
511 options += 3;
512 if (*options)
513 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
514 if (first_fb_vc < 0)
515 first_fb_vc = 0;
516 if (*options++ == '-')
517 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
518 fbcon_is_default = 0;
519 }
e4fc2761
AD		 520
521 if (!strncmp(options, "rotate:", 7)) {
522 options += 7;
523 if (*options)
524 rotate = simple_strtoul(options, &options, 0);
525 if (rotate > 3)
526 rotate = 0;
527 }
1da177e4 528 }
9b41046c 529 return 1;
1da177e4
LT		 530}
531
532__setup("fbcon=", fb_console_setup);
533#endif
534
535static int search_fb_in_map(int idx)
536{
537 int i, retval = 0;
538
e614b18d 539 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 540 if (con2fb_map[i] == idx)
541 retval = 1;
542 }
543 return retval;
544}
545
546static int search_for_mapped_con(void)
547{
548 int i, retval = 0;
549
e614b18d 550 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 551 if (con2fb_map[i] != -1)
552 retval = 1;
553 }
554 return retval;
555}
556
557static int fbcon_takeover(int show_logo)
558{
559 int err, i;
560
561 if (!num_registered_fb)
562 return -ENODEV;
563
564 if (!show_logo)
565 logo_shown = FBCON_LOGO_DONTSHOW;
566
567 for (i = first_fb_vc; i <= last_fb_vc; i++)
568 con2fb_map[i] = info_idx;
569
570 err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
571 fbcon_is_default);
e614b18d 572
1da177e4
LT		 573 if (err) {
574 for (i = first_fb_vc; i <= last_fb_vc; i++) {
575 con2fb_map[i] = -1;
576 }
577 info_idx = -1;
578 }
579
580 return err;
581}
582
70802c60
AD		 583#ifdef MODULE
584static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
585 int cols, int rows, int new_cols, int new_rows)
586{
587 logo_shown = FBCON_LOGO_DONTSHOW;
588}
589#else
1da177e4
LT		 590static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
591 int cols, int rows, int new_cols, int new_rows)
592{
593 /* Need to make room for the logo */
9c44e5f6 594 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 595 int cnt, erase = vc->vc_video_erase_char, step;
596 unsigned short *save = NULL, *r, *q;
597
70802c60
AD		 598 if (info->flags & FBINFO_MODULE) {
599 logo_shown = FBCON_LOGO_DONTSHOW;
600 return;
601 }
602
1da177e4
LT		 603 /*
604 * remove underline attribute from erase character
605 * if black and white framebuffer.
606 */
b8c90945 607 if (fb_get_color_depth(&info->var, &info->fix) == 1)
1da177e4 608 erase &= ~0x400;
9c44e5f6 609 logo_height = fb_prepare_logo(info, ops->rotate);
1da177e4
LT		 610 logo_lines = (logo_height + vc->vc_font.height - 1) /
611 vc->vc_font.height;
612 q = (unsigned short *) (vc->vc_origin +
613 vc->vc_size_row * rows);
614 step = logo_lines * cols;
615 for (r = q - logo_lines * cols; r < q; r++)
616 if (scr_readw(r) != vc->vc_video_erase_char)
617 break;
618 if (r != q && new_rows >= rows + logo_lines) {
619 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
620 if (save) {
621 int i = cols < new_cols ? cols : new_cols;
622 scr_memsetw(save, erase, logo_lines * new_cols * 2);
623 r = q - step;
624 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
625 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
626 r = q;
627 }
628 }
629 if (r == q) {
630 /* We can scroll screen down */
631 r = q - step - cols;
632 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
633 scr_memcpyw(r + step, r, vc->vc_size_row);
634 r -= cols;
635 }
636 if (!save) {
250038f5
GU		 637 int lines;
638 if (vc->vc_y + logo_lines >= rows)
639 lines = rows - vc->vc_y - 1;
640 else
641 lines = logo_lines;
642 vc->vc_y += lines;
643 vc->vc_pos += lines * vc->vc_size_row;
1da177e4
LT		 644 }
645 }
646 scr_memsetw((unsigned short *) vc->vc_origin,
647 erase,
648 vc->vc_size_row * logo_lines);
649
650 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
651 fbcon_clear_margins(vc, 0);
652 update_screen(vc);
653 }
654
655 if (save) {
656 q = (unsigned short *) (vc->vc_origin +
657 vc->vc_size_row *
658 rows);
659 scr_memcpyw(q, save, logo_lines * new_cols * 2);
660 vc->vc_y += logo_lines;
661 vc->vc_pos += logo_lines * vc->vc_size_row;
662 kfree(save);
663 }
664
665 if (logo_lines > vc->vc_bottom) {
666 logo_shown = FBCON_LOGO_CANSHOW;
667 printk(KERN_INFO
668 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
669 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
670 logo_shown = FBCON_LOGO_DRAW;
671 vc->vc_top = logo_lines;
672 }
673}
70802c60 674#endif /* MODULE */
1da177e4
LT		 675
676#ifdef CONFIG_FB_TILEBLITTING
b73deed3 677static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 678{
679 struct fbcon_ops *ops = info->fbcon_par;
680
b73deed3 681 ops->p = &fb_display[vc->vc_num];
ab767201 682
1da177e4 683 if ((info->flags & FBINFO_MISC_TILEBLITTING))
b73deed3 684 fbcon_set_tileops(vc, info);
e4fc2761 685 else {
b73deed3 686 fbcon_set_rotation(info);
1da177e4 687 fbcon_set_bitops(ops);
e4fc2761 688 }
1da177e4 689}
38b4982c
AD		 690
691static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
692{
693 int err = 0;
694
695 if (info->flags & FBINFO_MISC_TILEBLITTING &&
696 info->tileops->fb_get_tilemax(info) < charcount)
697 err = 1;
698
699 return err;
700}
1da177e4 701#else
b73deed3 702static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
1da177e4
LT		 703{
704 struct fbcon_ops *ops = info->fbcon_par;
705
706 info->flags &= ~FBINFO_MISC_TILEBLITTING;
b73deed3
AD		 707 ops->p = &fb_display[vc->vc_num];
708 fbcon_set_rotation(info);
1da177e4
LT		 709 fbcon_set_bitops(ops);
710}
38b4982c
AD		 711
712static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
713{
714 return 0;
715}
716
1da177e4
LT		 717#endif /* CONFIG_MISC_TILEBLITTING */
718
719
720static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
721 int unit, int oldidx)
722{
723 struct fbcon_ops *ops = NULL;
724 int err = 0;
725
726 if (!try_module_get(info->fbops->owner))
727 err = -ENODEV;
728
729 if (!err && info->fbops->fb_open &&
730 info->fbops->fb_open(info, 0))
731 err = -ENODEV;
732
733 if (!err) {
a39bc34e 734 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 735 if (!ops)
736 err = -ENOMEM;
737 }
738
739 if (!err) {
1da177e4 740 info->fbcon_par = ops;
b73deed3 741 set_blitting_type(vc, info);
1da177e4
LT		 742 }
743
744 if (err) {
745 con2fb_map[unit] = oldidx;
746 module_put(info->fbops->owner);
747 }
748
749 return err;
750}
751
752static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
753 struct fb_info *newinfo, int unit,
754 int oldidx, int found)
755{
756 struct fbcon_ops *ops = oldinfo->fbcon_par;
757 int err = 0;
758
759 if (oldinfo->fbops->fb_release &&
760 oldinfo->fbops->fb_release(oldinfo, 0)) {
761 con2fb_map[unit] = oldidx;
762 if (!found && newinfo->fbops->fb_release)
763 newinfo->fbops->fb_release(newinfo, 0);
764 if (!found)
765 module_put(newinfo->fbops->owner);
766 err = -ENODEV;
767 }
768
769 if (!err) {
88fb2c6e 770 fbcon_del_cursor_timer(oldinfo);
1da177e4
LT		 771 kfree(ops->cursor_state.mask);
772 kfree(ops->cursor_data);
e4fc2761 773 kfree(ops->fontbuffer);
1da177e4
LT		 774 kfree(oldinfo->fbcon_par);
775 oldinfo->fbcon_par = NULL;
776 module_put(oldinfo->fbops->owner);
dd0314f7
AD		 777 /*
778 If oldinfo and newinfo are driving the same hardware,
779 the fb_release() method of oldinfo may attempt to
780 restore the hardware state. This will leave the
781 newinfo in an undefined state. Thus, a call to
782 fb_set_par() may be needed for the newinfo.
783 */
784 if (newinfo->fbops->fb_set_par)
785 newinfo->fbops->fb_set_par(newinfo);
1da177e4
LT		 786 }
787
788 return err;
789}
790
1da177e4
LT		 791static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
792 int unit, int show_logo)
793{
794 struct fbcon_ops *ops = info->fbcon_par;
795
796 ops->currcon = fg_console;
797
798 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT))
799 info->fbops->fb_set_par(info);
800
801 ops->flags |= FBCON_FLAGS_INIT;
802 ops->graphics = 0;
803
804 if (vc)
805 fbcon_set_disp(info, &info->var, vc);
806 else
807 fbcon_preset_disp(info, &info->var, unit);
808
809 if (show_logo) {
810 struct vc_data *fg_vc = vc_cons[fg_console].d;
811 struct fb_info *fg_info =
812 registered_fb[con2fb_map[fg_console]];
813
814 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
815 fg_vc->vc_rows, fg_vc->vc_cols,
816 fg_vc->vc_rows);
817 }
818
819 update_screen(vc_cons[fg_console].d);
820}
821
822/**
823 * set_con2fb_map - map console to frame buffer device
824 * @unit: virtual console number to map
825 * @newidx: frame buffer index to map virtual console to
826 * @user: user request
827 *
828 * Maps a virtual console @unit to a frame buffer device
829 * @newidx.
830 */
831static int set_con2fb_map(int unit, int newidx, int user)
832{
833 struct vc_data *vc = vc_cons[unit].d;
834 int oldidx = con2fb_map[unit];
835 struct fb_info *info = registered_fb[newidx];
836 struct fb_info *oldinfo = NULL;
837 int found, err = 0;
838
839 if (oldidx == newidx)
840 return 0;
841
e614b18d
AD		 842 if (!info || fbcon_has_exited)
843 return -EINVAL;
1da177e4
LT		 844
845 if (!err && !search_for_mapped_con()) {
846 info_idx = newidx;
847 return fbcon_takeover(0);
848 }
849
850 if (oldidx != -1)
851 oldinfo = registered_fb[oldidx];
852
853 found = search_fb_in_map(newidx);
854
855 acquire_console_sem();
856 con2fb_map[unit] = newidx;
857 if (!err && !found)
858 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
859
860
861 /*
862 * If old fb is not mapped to any of the consoles,
863 * fbcon should release it.
864 */
865 if (!err && oldinfo && !search_fb_in_map(oldidx))
866 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
867 found);
868
869 if (!err) {
870 int show_logo = (fg_console == 0 && !user &&
871 logo_shown != FBCON_LOGO_DONTSHOW);
872
873 if (!found)
88fb2c6e 874 fbcon_add_cursor_timer(info);
1da177e4
LT		 875 con2fb_map_boot[unit] = newidx;
876 con2fb_init_display(vc, info, unit, show_logo);
877 }
878
e614b18d
AD		 879 if (!search_fb_in_map(info_idx))
880 info_idx = newidx;
881
1da177e4
LT		 882 release_console_sem();
883 return err;
884}
885
886/*
887 * Low Level Operations
888 */
889/* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
890static int var_to_display(struct display *disp,
891 struct fb_var_screeninfo *var,
892 struct fb_info *info)
893{
894 disp->xres_virtual = var->xres_virtual;
895 disp->yres_virtual = var->yres_virtual;
896 disp->bits_per_pixel = var->bits_per_pixel;
897 disp->grayscale = var->grayscale;
898 disp->nonstd = var->nonstd;
899 disp->accel_flags = var->accel_flags;
900 disp->height = var->height;
901 disp->width = var->width;
902 disp->red = var->red;
903 disp->green = var->green;
904 disp->blue = var->blue;
905 disp->transp = var->transp;
906 disp->rotate = var->rotate;
907 disp->mode = fb_match_mode(var, &info->modelist);
908 if (disp->mode == NULL)
909 /* This should not happen */
910 return -EINVAL;
911 return 0;
912}
913
914static void display_to_var(struct fb_var_screeninfo *var,
915 struct display *disp)
916{
917 fb_videomode_to_var(var, disp->mode);
918 var->xres_virtual = disp->xres_virtual;
919 var->yres_virtual = disp->yres_virtual;
920 var->bits_per_pixel = disp->bits_per_pixel;
921 var->grayscale = disp->grayscale;
922 var->nonstd = disp->nonstd;
923 var->accel_flags = disp->accel_flags;
924 var->height = disp->height;
925 var->width = disp->width;
926 var->red = disp->red;
927 var->green = disp->green;
928 var->blue = disp->blue;
929 var->transp = disp->transp;
930 var->rotate = disp->rotate;
931}
932
933static const char *fbcon_startup(void)
934{
935 const char *display_desc = "frame buffer device";
936 struct display *p = &fb_display[fg_console];
937 struct vc_data *vc = vc_cons[fg_console].d;
2f4516db 938 const struct font_desc *font = NULL;
1da177e4
LT		 939 struct module *owner;
940 struct fb_info *info = NULL;
941 struct fbcon_ops *ops;
942 int rows, cols;
943 int irqres;
944
945 irqres = 1;
946 /*
947 * If num_registered_fb is zero, this is a call for the dummy part.
948 * The frame buffer devices weren't initialized yet.
949 */
950 if (!num_registered_fb || info_idx == -1)
951 return display_desc;
952 /*
953 * Instead of blindly using registered_fb[0], we use info_idx, set by
954 * fb_console_init();
955 */
956 info = registered_fb[info_idx];
957 if (!info)
958 return NULL;
959
960 owner = info->fbops->owner;
961 if (!try_module_get(owner))
962 return NULL;
963 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
964 module_put(owner);
965 return NULL;
966 }
967
a39bc34e 968 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1da177e4
LT		 969 if (!ops) {
970 module_put(owner);
971 return NULL;
972 }
973
1da177e4
LT		 974 ops->currcon = -1;
975 ops->graphics = 1;
e4fc2761 976 ops->cur_rotate = -1;
1da177e4 977 info->fbcon_par = ops;
e4fc2761 978 p->con_rotate = rotate;
b73deed3 979 set_blitting_type(vc, info);
1da177e4
LT		 980
981 if (info->fix.type != FB_TYPE_TEXT) {
982 if (fbcon_softback_size) {
983 if (!softback_buf) {
984 softback_buf =
985 (unsigned long)
986 kmalloc(fbcon_softback_size,
987 GFP_KERNEL);
988 if (!softback_buf) {
989 fbcon_softback_size = 0;
990 softback_top = 0;
991 }
992 }
993 } else {
994 if (softback_buf) {
995 kfree((void *) softback_buf);
996 softback_buf = 0;
997 softback_top = 0;
998 }
999 }
1000 if (softback_buf)
1001 softback_in = softback_top = softback_curr =
1002 softback_buf;
1003 softback_lines = 0;
1004 }
1005
1006 /* Setup default font */
1007 if (!p->fontdata) {
1008 if (!fontname[0] || !(font = find_font(fontname)))
1009 font = get_default_font(info->var.xres,
2d2699d9
AD		 1010 info->var.yres,
1011 info->pixmap.blit_x,
1012 info->pixmap.blit_y);
1da177e4
LT		 1013 vc->vc_font.width = font->width;
1014 vc->vc_font.height = font->height;
2f4516db 1015 vc->vc_font.data = (void *)(p->fontdata = font->data);
1da177e4
LT		 1016 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
1017 }
1018
e4fc2761
AD		 1019 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1020 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1021 cols /= vc->vc_font.width;
1022 rows /= vc->vc_font.height;
1da177e4
LT		 1023 vc_resize(vc, cols, rows);
1024
1025 DPRINTK("mode: %s\n", info->fix.id);
1026 DPRINTK("visual: %d\n", info->fix.visual);
1027 DPRINTK("res: %dx%d-%d\n", info->var.xres,
1028 info->var.yres,
1029 info->var.bits_per_pixel);
1030
1031#ifdef CONFIG_ATARI
1032 if (MACH_IS_ATARI) {
1033 cursor_blink_rate = ATARI_CURSOR_BLINK_RATE;
1034 irqres =
1035 request_irq(IRQ_AUTO_4, fb_vbl_handler,
1036 IRQ_TYPE_PRIO, "framebuffer vbl",
1037 info);
1038 }
1039#endif /* CONFIG_ATARI */
1040
1041#ifdef CONFIG_MAC
1042 /*
1043 * On a Macintoy, the VBL interrupt may or may not be active.
1044 * As interrupt based cursor is more reliable and race free, we
1045 * probe for VBL interrupts.
1046 */
1047 if (MACH_IS_MAC) {
1048 int ct = 0;
1049 /*
1050 * Probe for VBL: set temp. handler ...
1051 */
1052 irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0,
1053 "framebuffer vbl", info);
1054 vbl_detected = 0;
1055
1056 /*
1057 * ... and spin for 20 ms ...
1058 */
1059 while (!vbl_detected && ++ct < 1000)
1060 udelay(20);
1061
1062 if (ct == 1000)
1063 printk
1064 ("fbcon_startup: No VBL detected, using timer based cursor.\n");
1065
1066 free_irq(IRQ_MAC_VBL, fb_vbl_detect);
1067
1068 if (vbl_detected) {
1069 /*
1070 * interrupt based cursor ok
1071 */
1072 cursor_blink_rate = MAC_CURSOR_BLINK_RATE;
1073 irqres =
1074 request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0,
1075 "framebuffer vbl", info);
1076 } else {
1077 /*
1078 * VBL not detected: fall through, use timer based cursor
1079 */
1080 irqres = 1;
1081 }
1082 }
1083#endif /* CONFIG_MAC */
1084
88fb2c6e 1085 fbcon_add_cursor_timer(info);
e614b18d 1086 fbcon_has_exited = 0;
1da177e4
LT		 1087 return display_desc;
1088}
1089
1090static void fbcon_init(struct vc_data *vc, int init)
1091{
1092 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1093 struct fbcon_ops *ops;
1094 struct vc_data **default_mode = vc->vc_display_fg;
1095 struct vc_data *svc = *default_mode;
1096 struct display *t, *p = &fb_display[vc->vc_num];
1097 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
306958e8 1098 int cap;
1da177e4
LT		 1099
1100 if (info_idx == -1 || info == NULL)
1101 return;
306958e8
AB		 1102
1103 cap = info->flags;
1104
1da177e4
LT		 1105 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1106 (info->fix.type == FB_TYPE_TEXT))
1107 logo = 0;
1108
1da177e4
LT		 1109 if (var_to_display(p, &info->var, info))
1110 return;
1111
1112 /* If we are not the first console on this
1113 fb, copy the font from that console */
e614b18d
AD		 1114 t = &fb_display[fg_console];
1115 if (!p->fontdata) {
1116 if (t->fontdata) {
1117 struct vc_data *fvc = vc_cons[fg_console].d;
1118
1119 vc->vc_font.data = (void *)(p->fontdata =
1120 fvc->vc_font.data);
1121 vc->vc_font.width = fvc->vc_font.width;
1122 vc->vc_font.height = fvc->vc_font.height;
1123 p->userfont = t->userfont;
1124
1125 if (p->userfont)
1126 REFCOUNT(p->fontdata)++;
1127 } else {
1128 const struct font_desc *font = NULL;
1129
1130 if (!fontname[0] || !(font = find_font(fontname)))
1131 font = get_default_font(info->var.xres,
2d2699d9
AD		 1132 info->var.yres,
1133 info->pixmap.blit_x,
1134 info->pixmap.blit_y);
e614b18d
AD		 1135 vc->vc_font.width = font->width;
1136 vc->vc_font.height = font->height;
1137 vc->vc_font.data = (void *)(p->fontdata = font->data);
1138 vc->vc_font.charcount = 256; /* FIXME Need to
1139 support more fonts */
1140 }
1da177e4 1141 }
e614b18d 1142
1da177e4
LT		 1143 if (p->userfont)
1144 charcnt = FNTCHARCNT(p->fontdata);
e614b18d 1145
b8c90945 1146 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1147 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1148 if (charcnt == 256) {
1149 vc->vc_hi_font_mask = 0;
1150 } else {
1151 vc->vc_hi_font_mask = 0x100;
1152 if (vc->vc_can_do_color)
1153 vc->vc_complement_mask <<= 1;
1154 }
1155
1156 if (!*svc->vc_uni_pagedir_loc)
1157 con_set_default_unimap(svc);
1158 if (!*vc->vc_uni_pagedir_loc)
1159 con_copy_unimap(vc, svc);
1160
e4fc2761
AD		 1161 ops = info->fbcon_par;
1162 p->con_rotate = rotate;
b73deed3 1163 set_blitting_type(vc, info);
e4fc2761 1164
1da177e4
LT		 1165 cols = vc->vc_cols;
1166 rows = vc->vc_rows;
e4fc2761
AD		 1167 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1168 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1169 new_cols /= vc->vc_font.width;
1170 new_rows /= vc->vc_font.height;
1da177e4
LT		 1171 vc_resize(vc, new_cols, new_rows);
1172
1da177e4
LT		 1173 /*
1174 * We must always set the mode. The mode of the previous console
1175 * driver could be in the same resolution but we are using different
1176 * hardware so we have to initialize the hardware.
1177 *
1178 * We need to do it in fbcon_init() to prevent screen corruption.
1179 */
d354d9af 1180 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
1da177e4
LT		 1181 if (info->fbops->fb_set_par &&
1182 !(ops->flags & FBCON_FLAGS_INIT))
1183 info->fbops->fb_set_par(info);
1184 ops->flags |= FBCON_FLAGS_INIT;
1185 }
1186
1187 ops->graphics = 0;
1188
1189 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1190 !(cap & FBINFO_HWACCEL_DISABLED))
1191 p->scrollmode = SCROLL_MOVE;
1192 else /* default to something safe */
1193 p->scrollmode = SCROLL_REDRAW;
1194
1195 /*
1196 * ++guenther: console.c:vc_allocate() relies on initializing
1197 * vc_{cols,rows}, but we must not set those if we are only
1198 * resizing the console.
1199 */
1200 if (!init) {
1201 vc->vc_cols = new_cols;
1202 vc->vc_rows = new_rows;
1203 }
1204
1205 if (logo)
1206 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1207
4d9c5b6e
AD		 1208 if (vc == svc && softback_buf)
1209 fbcon_update_softback(vc);
e4fc2761 1210
b73deed3 1211 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 1212 ops->rotate = FB_ROTATE_UR;
b73deed3 1213 set_blitting_type(vc, info);
e4fc2761
AD		 1214 }
1215
1a37d5f5 1216 ops->p = &fb_display[fg_console];
1da177e4
LT		 1217}
1218
e614b18d
AD		 1219static void fbcon_free_font(struct display *p)
1220{
1221 if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
1222 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1223 p->fontdata = NULL;
1224 p->userfont = 0;
1225}
1226
1da177e4
LT		 1227static void fbcon_deinit(struct vc_data *vc)
1228{
1229 struct display *p = &fb_display[vc->vc_num];
e614b18d
AD		 1230 struct fb_info *info;
1231 struct fbcon_ops *ops;
1232 int idx;
1da177e4 1233
1da177e4 1234 fbcon_free_font(p);
e614b18d
AD		 1235 idx = con2fb_map[vc->vc_num];
1236
1237 if (idx == -1)
1238 goto finished;
1239
1240 info = registered_fb[idx];
1241
1242 if (!info)
1243 goto finished;
1244
1245 ops = info->fbcon_par;
1246
1247 if (!ops)
1248 goto finished;
1249
1250 if (CON_IS_VISIBLE(vc))
1251 fbcon_del_cursor_timer(info);
1252
1253 ops->flags &= ~FBCON_FLAGS_INIT;
1254finished:
1255
1256 if (!con_is_bound(&fb_con))
1257 fbcon_exit();
1258
1259 return;
1da177e4
LT		 1260}
1261
1262/* ====================================================================== */
1263
1264/* fbcon_XXX routines - interface used by the world
1265 *
1266 * This system is now divided into two levels because of complications
1267 * caused by hardware scrolling. Top level functions:
1268 *
1269 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1270 *
1271 * handles y values in range [0, scr_height-1] that correspond to real
1272 * screen positions. y_wrap shift means that first line of bitmap may be
1273 * anywhere on this display. These functions convert lineoffsets to
1274 * bitmap offsets and deal with the wrap-around case by splitting blits.
1275 *
1276 * fbcon_bmove_physical_8() -- These functions fast implementations
1277 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1278 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1279 *
1280 * WARNING:
1281 *
1282 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1283 * Implies should only really hardware scroll in rows. Only reason for
1284 * restriction is simplicity & efficiency at the moment.
1285 */
1286
1da177e4
LT		 1287static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1288 int width)
1289{
1290 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1291 struct fbcon_ops *ops = info->fbcon_par;
1292
1293 struct display *p = &fb_display[vc->vc_num];
1294 u_int y_break;
1295
1296 if (fbcon_is_inactive(vc, info))
1297 return;
1298
1299 if (!height || !width)
1300 return;
1301
1302 /* Split blits that cross physical y_wrap boundary */
1303
1304 y_break = p->vrows - p->yscroll;
1305 if (sy < y_break && sy + height - 1 >= y_break) {
1306 u_int b = y_break - sy;
1307 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1308 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1309 width);
1310 } else
1311 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1312}
1313
1314static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1315 int count, int ypos, int xpos)
1316{
1317 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1318 struct display *p = &fb_display[vc->vc_num];
1319 struct fbcon_ops *ops = info->fbcon_par;
1320
1321 if (!fbcon_is_inactive(vc, info))
1322 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1323 get_color(vc, info, scr_readw(s), 1),
1324 get_color(vc, info, scr_readw(s), 0));
1325}
1326
1327static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1328{
1329 unsigned short chr;
1330
1331 scr_writew(c, &chr);
1332 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1333}
1334
1335static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1336{
1337 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1338 struct fbcon_ops *ops = info->fbcon_par;
1339
1340 if (!fbcon_is_inactive(vc, info))
1341 ops->clear_margins(vc, info, bottom_only);
1342}
1343
1344static void fbcon_cursor(struct vc_data *vc, int mode)
1345{
1346 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1347 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1348 int y;
1349 int c = scr_readw((u16 *) vc->vc_pos);
1350
d1e23066 1351 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1da177e4
LT		 1352 return;
1353
acba9cd0
AD		 1354 if (vc->vc_cursor_type & 0x10)
1355 fbcon_del_cursor_timer(info);
1356 else
1357 fbcon_add_cursor_timer(info);
1358
1da177e4
LT		 1359 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1360 if (mode & CM_SOFTBACK) {
1361 mode &= ~CM_SOFTBACK;
1362 y = softback_lines;
1363 } else {
1364 if (softback_lines)
1365 fbcon_set_origin(vc);
1366 y = 0;
1367 }
1368
b73deed3 1369 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1da177e4
LT		 1370 get_color(vc, info, c, 0));
1371 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1372}
1373
1374static int scrollback_phys_max = 0;
1375static int scrollback_max = 0;
1376static int scrollback_current = 0;
1377
1da177e4
LT		 1378/*
1379 * If no vc is existent yet, just set struct display
1380 */
1381static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1382 int unit)
1383{
1384 struct display *p = &fb_display[unit];
1385 struct display *t = &fb_display[fg_console];
1386
1da177e4
LT		 1387 if (var_to_display(p, var, info))
1388 return;
1389
1390 p->fontdata = t->fontdata;
1391 p->userfont = t->userfont;
1392 if (p->userfont)
1393 REFCOUNT(p->fontdata)++;
1394}
1395
1396static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1397 struct vc_data *vc)
1398{
1399 struct display *p = &fb_display[vc->vc_num], *t;
1400 struct vc_data **default_mode = vc->vc_display_fg;
1401 struct vc_data *svc = *default_mode;
e4fc2761 1402 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1403 int rows, cols, charcnt = 256;
1404
1da177e4
LT		 1405 if (var_to_display(p, var, info))
1406 return;
1407 t = &fb_display[svc->vc_num];
1408 if (!vc->vc_font.data) {
2f4516db 1409 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1da177e4
LT		 1410 vc->vc_font.width = (*default_mode)->vc_font.width;
1411 vc->vc_font.height = (*default_mode)->vc_font.height;
1412 p->userfont = t->userfont;
1413 if (p->userfont)
1414 REFCOUNT(p->fontdata)++;
1415 }
1416 if (p->userfont)
1417 charcnt = FNTCHARCNT(p->fontdata);
1418
b8c90945
AD		 1419 var->activate = FB_ACTIVATE_NOW;
1420 info->var.activate = var->activate;
e4fc2761
AD		 1421 var->yoffset = info->var.yoffset;
1422 var->xoffset = info->var.xoffset;
b8c90945 1423 fb_set_var(info, var);
e4fc2761 1424 ops->var = info->var;
b8c90945 1425 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4
LT		 1426 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1427 if (charcnt == 256) {
1428 vc->vc_hi_font_mask = 0;
1429 } else {
1430 vc->vc_hi_font_mask = 0x100;
1431 if (vc->vc_can_do_color)
1432 vc->vc_complement_mask <<= 1;
1433 }
1434
1435 if (!*svc->vc_uni_pagedir_loc)
1436 con_set_default_unimap(svc);
1437 if (!*vc->vc_uni_pagedir_loc)
1438 con_copy_unimap(vc, svc);
1439
e4fc2761
AD		 1440 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1441 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1442 cols /= vc->vc_font.width;
1443 rows /= vc->vc_font.height;
1da177e4 1444 vc_resize(vc, cols, rows);
e4fc2761 1445
1da177e4
LT		 1446 if (CON_IS_VISIBLE(vc)) {
1447 update_screen(vc);
4d9c5b6e
AD		 1448 if (softback_buf)
1449 fbcon_update_softback(vc);
1da177e4
LT		 1450 }
1451}
1452
1453static __inline__ void ywrap_up(struct vc_data *vc, int count)
1454{
1455 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1456 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 1457 struct display *p = &fb_display[vc->vc_num];
1458
1459 p->yscroll += count;
1460 if (p->yscroll >= p->vrows) /* Deal with wrap */
1461 p->yscroll -= p->vrows;
e4fc2761
AD		 1462 ops->var.xoffset = 0;
1463 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1464 ops->var.vmode |= FB_VMODE_YWRAP;
1465 ops->update_start(info);
1da177e4
LT		 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 ywrap_down(struct vc_data *vc, 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
LT		 1476 struct display *p = &fb_display[vc->vc_num];
1477
1478 p->yscroll -= count;
1479 if (p->yscroll < 0) /* Deal with wrap */
1480 p->yscroll += p->vrows;
e4fc2761
AD		 1481 ops->var.xoffset = 0;
1482 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1483 ops->var.vmode |= FB_VMODE_YWRAP;
1484 ops->update_start(info);
1da177e4
LT		 1485 scrollback_max -= count;
1486 if (scrollback_max < 0)
1487 scrollback_max = 0;
1488 scrollback_current = 0;
1489}
1490
1491static __inline__ void ypan_up(struct vc_data *vc, int count)
1492{
1493 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1494 struct display *p = &fb_display[vc->vc_num];
1495 struct fbcon_ops *ops = info->fbcon_par;
1496
1497 p->yscroll += count;
1498 if (p->yscroll > p->vrows - vc->vc_rows) {
1499 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1500 0, 0, 0, vc->vc_rows, vc->vc_cols);
1501 p->yscroll -= p->vrows - vc->vc_rows;
1502 }
e4fc2761
AD		 1503
1504 ops->var.xoffset = 0;
1505 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1506 ops->var.vmode &= ~FB_VMODE_YWRAP;
1507 ops->update_start(info);
1da177e4
LT		 1508 fbcon_clear_margins(vc, 1);
1509 scrollback_max += count;
1510 if (scrollback_max > scrollback_phys_max)
1511 scrollback_max = scrollback_phys_max;
1512 scrollback_current = 0;
1513}
1514
1515static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1516{
1517 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1518 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1519 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1520
1521 p->yscroll += count;
a39bc34e 1522
1da177e4
LT		 1523 if (p->yscroll > p->vrows - vc->vc_rows) {
1524 p->yscroll -= p->vrows - vc->vc_rows;
1da177e4 1525 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
a39bc34e 1526 }
e4fc2761
AD		 1527
1528 ops->var.xoffset = 0;
1529 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1530 ops->var.vmode &= ~FB_VMODE_YWRAP;
1531 ops->update_start(info);
1da177e4
LT		 1532 fbcon_clear_margins(vc, 1);
1533 scrollback_max += count;
1534 if (scrollback_max > scrollback_phys_max)
1535 scrollback_max = scrollback_phys_max;
1536 scrollback_current = 0;
1537}
1538
1539static __inline__ void ypan_down(struct vc_data *vc, int count)
1540{
1541 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1542 struct display *p = &fb_display[vc->vc_num];
1543 struct fbcon_ops *ops = info->fbcon_par;
1544
1545 p->yscroll -= count;
1546 if (p->yscroll < 0) {
1547 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1548 0, vc->vc_rows, vc->vc_cols);
1549 p->yscroll += p->vrows - vc->vc_rows;
1550 }
e4fc2761
AD		 1551
1552 ops->var.xoffset = 0;
1553 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1554 ops->var.vmode &= ~FB_VMODE_YWRAP;
1555 ops->update_start(info);
1da177e4
LT		 1556 fbcon_clear_margins(vc, 1);
1557 scrollback_max -= count;
1558 if (scrollback_max < 0)
1559 scrollback_max = 0;
1560 scrollback_current = 0;
1561}
1562
1563static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1564{
1565 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 1566 struct fbcon_ops *ops = info->fbcon_par;
1da177e4 1567 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1568
1569 p->yscroll -= count;
a39bc34e 1570
1da177e4
LT		 1571 if (p->yscroll < 0) {
1572 p->yscroll += p->vrows - vc->vc_rows;
1da177e4 1573 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
a39bc34e 1574 }
e4fc2761
AD		 1575
1576 ops->var.xoffset = 0;
1577 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1578 ops->var.vmode &= ~FB_VMODE_YWRAP;
1579 ops->update_start(info);
1da177e4
LT		 1580 fbcon_clear_margins(vc, 1);
1581 scrollback_max -= count;
1582 if (scrollback_max < 0)
1583 scrollback_max = 0;
1584 scrollback_current = 0;
1585}
1586
1587static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1588 long delta)
1589{
1590 int count = vc->vc_rows;
1591 unsigned short *d, *s;
1592 unsigned long n;
1593 int line = 0;
1594
1595 d = (u16 *) softback_curr;
1596 if (d == (u16 *) softback_in)
1597 d = (u16 *) vc->vc_origin;
1598 n = softback_curr + delta * vc->vc_size_row;
1599 softback_lines -= delta;
1600 if (delta < 0) {
1601 if (softback_curr < softback_top && n < softback_buf) {
1602 n += softback_end - softback_buf;
1603 if (n < softback_top) {
1604 softback_lines -=
1605 (softback_top - n) / vc->vc_size_row;
1606 n = softback_top;
1607 }
1608 } else if (softback_curr >= softback_top
1609 && n < softback_top) {
1610 softback_lines -=
1611 (softback_top - n) / vc->vc_size_row;
1612 n = softback_top;
1613 }
1614 } else {
1615 if (softback_curr > softback_in && n >= softback_end) {
1616 n += softback_buf - softback_end;
1617 if (n > softback_in) {
1618 n = softback_in;
1619 softback_lines = 0;
1620 }
1621 } else if (softback_curr <= softback_in && n > softback_in) {
1622 n = softback_in;
1623 softback_lines = 0;
1624 }
1625 }
1626 if (n == softback_curr)
1627 return;
1628 softback_curr = n;
1629 s = (u16 *) softback_curr;
1630 if (s == (u16 *) softback_in)
1631 s = (u16 *) vc->vc_origin;
1632 while (count--) {
1633 unsigned short *start;
1634 unsigned short *le;
1635 unsigned short c;
1636 int x = 0;
1637 unsigned short attr = 1;
1638
1639 start = s;
1640 le = advance_row(s, 1);
1641 do {
1642 c = scr_readw(s);
1643 if (attr != (c & 0xff00)) {
1644 attr = c & 0xff00;
1645 if (s > start) {
1646 fbcon_putcs(vc, start, s - start,
1647 line, x);
1648 x += s - start;
1649 start = s;
1650 }
1651 }
1652 if (c == scr_readw(d)) {
1653 if (s > start) {
1654 fbcon_putcs(vc, start, s - start,
1655 line, x);
1656 x += s - start + 1;
1657 start = s + 1;
1658 } else {
1659 x++;
1660 start++;
1661 }
1662 }
1663 s++;
1664 d++;
1665 } while (s < le);
1666 if (s > start)
1667 fbcon_putcs(vc, start, s - start, line, x);
1668 line++;
1669 if (d == (u16 *) softback_end)
1670 d = (u16 *) softback_buf;
1671 if (d == (u16 *) softback_in)
1672 d = (u16 *) vc->vc_origin;
1673 if (s == (u16 *) softback_end)
1674 s = (u16 *) softback_buf;
1675 if (s == (u16 *) softback_in)
1676 s = (u16 *) vc->vc_origin;
1677 }
1678}
1679
1680static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1681 int line, int count, int dy)
1682{
1683 unsigned short *s = (unsigned short *)
1684 (vc->vc_origin + vc->vc_size_row * line);
1685
1686 while (count--) {
1687 unsigned short *start = s;
1688 unsigned short *le = advance_row(s, 1);
1689 unsigned short c;
1690 int x = 0;
1691 unsigned short attr = 1;
1692
1693 do {
1694 c = scr_readw(s);
1695 if (attr != (c & 0xff00)) {
1696 attr = c & 0xff00;
1697 if (s > start) {
1698 fbcon_putcs(vc, start, s - start,
1699 dy, x);
1700 x += s - start;
1701 start = s;
1702 }
1703 }
1704 console_conditional_schedule();
1705 s++;
1706 } while (s < le);
1707 if (s > start)
1708 fbcon_putcs(vc, start, s - start, dy, x);
1709 console_conditional_schedule();
1710 dy++;
1711 }
1712}
1713
bad07ff7
KH		 1714static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1715 struct display *p, int line, int count, int ycount)
1716{
1717 int offset = ycount * vc->vc_cols;
1718 unsigned short *d = (unsigned short *)
1719 (vc->vc_origin + vc->vc_size_row * line);
1720 unsigned short *s = d + offset;
1721 struct fbcon_ops *ops = info->fbcon_par;
1722
1723 while (count--) {
1724 unsigned short *start = s;
1725 unsigned short *le = advance_row(s, 1);
1726 unsigned short c;
1727 int x = 0;
1728
1729 do {
1730 c = scr_readw(s);
1731
1732 if (c == scr_readw(d)) {
1733 if (s > start) {
1734 ops->bmove(vc, info, line + ycount, x,
1735 line, x, 1, s-start);
1736 x += s - start + 1;
1737 start = s + 1;
1738 } else {
1739 x++;
1740 start++;
1741 }
1742 }
1743
1744 scr_writew(c, d);
1745 console_conditional_schedule();
1746 s++;
1747 d++;
1748 } while (s < le);
1749 if (s > start)
1750 ops->bmove(vc, info, line + ycount, x, line, x, 1,
1751 s-start);
1752 console_conditional_schedule();
1753 if (ycount > 0)
1754 line++;
1755 else {
1756 line--;
1757 /* NOTE: We subtract two lines from these pointers */
1758 s -= vc->vc_size_row;
1759 d -= vc->vc_size_row;
1760 }
1761 }
1762}
1763
1da177e4
LT		 1764static void fbcon_redraw(struct vc_data *vc, struct display *p,
1765 int line, int count, int offset)
1766{
1767 unsigned short *d = (unsigned short *)
1768 (vc->vc_origin + vc->vc_size_row * line);
1769 unsigned short *s = d + offset;
1770
1771 while (count--) {
1772 unsigned short *start = s;
1773 unsigned short *le = advance_row(s, 1);
1774 unsigned short c;
1775 int x = 0;
1776 unsigned short attr = 1;
1777
1778 do {
1779 c = scr_readw(s);
1780 if (attr != (c & 0xff00)) {
1781 attr = c & 0xff00;
1782 if (s > start) {
1783 fbcon_putcs(vc, start, s - start,
1784 line, x);
1785 x += s - start;
1786 start = s;
1787 }
1788 }
1789 if (c == scr_readw(d)) {
1790 if (s > start) {
1791 fbcon_putcs(vc, start, s - start,
1792 line, x);
1793 x += s - start + 1;
1794 start = s + 1;
1795 } else {
1796 x++;
1797 start++;
1798 }
1799 }
1800 scr_writew(c, d);
1801 console_conditional_schedule();
1802 s++;
1803 d++;
1804 } while (s < le);
1805 if (s > start)
1806 fbcon_putcs(vc, start, s - start, line, x);
1807 console_conditional_schedule();
1808 if (offset > 0)
1809 line++;
1810 else {
1811 line--;
1812 /* NOTE: We subtract two lines from these pointers */
1813 s -= vc->vc_size_row;
1814 d -= vc->vc_size_row;
1815 }
1816 }
1817}
1818
1819static inline void fbcon_softback_note(struct vc_data *vc, int t,
1820 int count)
1821{
1822 unsigned short *p;
1823
1824 if (vc->vc_num != fg_console)
1825 return;
1826 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1827
1828 while (count) {
1829 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1830 count--;
1831 p = advance_row(p, 1);
1832 softback_in += vc->vc_size_row;
1833 if (softback_in == softback_end)
1834 softback_in = softback_buf;
1835 if (softback_in == softback_top) {
1836 softback_top += vc->vc_size_row;
1837 if (softback_top == softback_end)
1838 softback_top = softback_buf;
1839 }
1840 }
1841 softback_curr = softback_in;
1842}
1843
1844static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1845 int count)
1846{
1847 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1848 struct display *p = &fb_display[vc->vc_num];
1da177e4
LT		 1849 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1850
1851 if (fbcon_is_inactive(vc, info))
1852 return -EINVAL;
1853
1854 fbcon_cursor(vc, CM_ERASE);
1855
1856 /*
1857 * ++Geert: Only use ywrap/ypan if the console is in text mode
1858 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1859 * whole screen (prevents flicker).
1860 */
1861
1862 switch (dir) {
1863 case SM_UP:
1864 if (count > vc->vc_rows) /* Maximum realistic size */
1865 count = vc->vc_rows;
1866 if (softback_top)
1867 fbcon_softback_note(vc, t, count);
1868 if (logo_shown >= 0)
1869 goto redraw_up;
1870 switch (p->scrollmode) {
1871 case SCROLL_MOVE:
bad07ff7
KH		 1872 fbcon_redraw_blit(vc, info, p, t, b - t - count,
1873 count);
1874 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1875 scr_memsetw((unsigned short *) (vc->vc_origin +
1876 vc->vc_size_row *
1877 (b - count)),
1878 vc->vc_video_erase_char,
1879 vc->vc_size_row * count);
1880 return 1;
1da177e4
LT		 1881 break;
1882
1883 case SCROLL_WRAP_MOVE:
1884 if (b - t - count > 3 * vc->vc_rows >> 2) {
1885 if (t > 0)
1886 fbcon_bmove(vc, 0, 0, count, 0, t,
1887 vc->vc_cols);
1888 ywrap_up(vc, count);
1889 if (vc->vc_rows - b > 0)
1890 fbcon_bmove(vc, b - count, 0, b, 0,
1891 vc->vc_rows - b,
1892 vc->vc_cols);
1893 } else if (info->flags & FBINFO_READS_FAST)
1894 fbcon_bmove(vc, t + count, 0, t, 0,
1895 b - t - count, vc->vc_cols);
1896 else
1897 goto redraw_up;
1898 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1899 break;
1900
1901 case SCROLL_PAN_REDRAW:
1902 if ((p->yscroll + count <=
1903 2 * (p->vrows - vc->vc_rows))
1904 && ((!scroll_partial && (b - t == vc->vc_rows))
1905 || (scroll_partial
1906 && (b - t - count >
1907 3 * vc->vc_rows >> 2)))) {
1908 if (t > 0)
1909 fbcon_redraw_move(vc, p, 0, t, count);
1910 ypan_up_redraw(vc, t, count);
1911 if (vc->vc_rows - b > 0)
26e780e8 1912 fbcon_redraw_move(vc, p, b,
1da177e4
LT		 1913 vc->vc_rows - b, b);
1914 } else
1915 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1916 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1917 break;
1918
1919 case SCROLL_PAN_MOVE:
1920 if ((p->yscroll + count <=
1921 2 * (p->vrows - vc->vc_rows))
1922 && ((!scroll_partial && (b - t == vc->vc_rows))
1923 || (scroll_partial
1924 && (b - t - count >
1925 3 * vc->vc_rows >> 2)))) {
1926 if (t > 0)
1927 fbcon_bmove(vc, 0, 0, count, 0, t,
1928 vc->vc_cols);
1929 ypan_up(vc, count);
1930 if (vc->vc_rows - b > 0)
1931 fbcon_bmove(vc, b - count, 0, b, 0,
1932 vc->vc_rows - b,
1933 vc->vc_cols);
1934 } else if (info->flags & FBINFO_READS_FAST)
1935 fbcon_bmove(vc, t + count, 0, t, 0,
1936 b - t - count, vc->vc_cols);
1937 else
1938 goto redraw_up;
1939 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1940 break;
1941
1942 case SCROLL_REDRAW:
1943 redraw_up:
1944 fbcon_redraw(vc, p, t, b - t - count,
1945 count * vc->vc_cols);
1946 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1947 scr_memsetw((unsigned short *) (vc->vc_origin +
1948 vc->vc_size_row *
1949 (b - count)),
1950 vc->vc_video_erase_char,
1951 vc->vc_size_row * count);
1952 return 1;
1953 }
1954 break;
1955
1956 case SM_DOWN:
1957 if (count > vc->vc_rows) /* Maximum realistic size */
1958 count = vc->vc_rows;
e703ecc3
JB		 1959 if (logo_shown >= 0)
1960 goto redraw_down;
1da177e4
LT		 1961 switch (p->scrollmode) {
1962 case SCROLL_MOVE:
bad07ff7
KH		 1963 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1964 -count);
1965 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1966 scr_memsetw((unsigned short *) (vc->vc_origin +
1967 vc->vc_size_row *
1968 t),
1969 vc->vc_video_erase_char,
1970 vc->vc_size_row * count);
1971 return 1;
1da177e4
LT		 1972 break;
1973
1974 case SCROLL_WRAP_MOVE:
1975 if (b - t - count > 3 * vc->vc_rows >> 2) {
1976 if (vc->vc_rows - b > 0)
1977 fbcon_bmove(vc, b, 0, b - count, 0,
1978 vc->vc_rows - b,
1979 vc->vc_cols);
1980 ywrap_down(vc, count);
1981 if (t > 0)
1982 fbcon_bmove(vc, count, 0, 0, 0, t,
1983 vc->vc_cols);
1984 } else if (info->flags & FBINFO_READS_FAST)
1985 fbcon_bmove(vc, t, 0, t + count, 0,
1986 b - t - count, vc->vc_cols);
1987 else
1988 goto redraw_down;
1989 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1990 break;
1991
1992 case SCROLL_PAN_MOVE:
1993 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1994 && ((!scroll_partial && (b - t == vc->vc_rows))
1995 || (scroll_partial
1996 && (b - t - count >
1997 3 * vc->vc_rows >> 2)))) {
1998 if (vc->vc_rows - b > 0)
1999 fbcon_bmove(vc, b, 0, b - count, 0,
2000 vc->vc_rows - b,
2001 vc->vc_cols);
2002 ypan_down(vc, count);
2003 if (t > 0)
2004 fbcon_bmove(vc, count, 0, 0, 0, t,
2005 vc->vc_cols);
2006 } else if (info->flags & FBINFO_READS_FAST)
2007 fbcon_bmove(vc, t, 0, t + count, 0,
2008 b - t - count, vc->vc_cols);
2009 else
2010 goto redraw_down;
2011 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2012 break;
2013
2014 case SCROLL_PAN_REDRAW:
2015 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
2016 && ((!scroll_partial && (b - t == vc->vc_rows))
2017 || (scroll_partial
2018 && (b - t - count >
2019 3 * vc->vc_rows >> 2)))) {
2020 if (vc->vc_rows - b > 0)
2021 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
2022 b - count);
2023 ypan_down_redraw(vc, t, count);
2024 if (t > 0)
2025 fbcon_redraw_move(vc, p, count, t, 0);
2026 } else
2027 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
2028 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2029 break;
2030
2031 case SCROLL_REDRAW:
2032 redraw_down:
2033 fbcon_redraw(vc, p, b - 1, b - t - count,
2034 -count * vc->vc_cols);
2035 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2036 scr_memsetw((unsigned short *) (vc->vc_origin +
2037 vc->vc_size_row *
2038 t),
2039 vc->vc_video_erase_char,
2040 vc->vc_size_row * count);
2041 return 1;
2042 }
2043 }
2044 return 0;
2045}
2046
2047
2048static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
2049 int height, int width)
2050{
2051 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2052 struct display *p = &fb_display[vc->vc_num];
2053
2054 if (fbcon_is_inactive(vc, info))
2055 return;
2056
2057 if (!width || !height)
2058 return;
2059
2060 /* Split blits that cross physical y_wrap case.
2061 * Pathological case involves 4 blits, better to use recursive
2062 * code rather than unrolled case
2063 *
2064 * Recursive invocations don't need to erase the cursor over and
2065 * over again, so we use fbcon_bmove_rec()
2066 */
2067 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2068 p->vrows - p->yscroll);
2069}
2070
2071static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
2072 int dy, int dx, int height, int width, u_int y_break)
2073{
2074 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2075 struct fbcon_ops *ops = info->fbcon_par;
2076 u_int b;
2077
2078 if (sy < y_break && sy + height > y_break) {
2079 b = y_break - sy;
2080 if (dy < sy) { /* Avoid trashing self */
2081 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2082 y_break);
2083 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2084 height - b, width, y_break);
2085 } else {
2086 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2087 height - b, width, y_break);
2088 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2089 y_break);
2090 }
2091 return;
2092 }
2093
2094 if (dy < y_break && dy + height > y_break) {
2095 b = y_break - dy;
2096 if (dy < sy) { /* Avoid trashing self */
2097 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2098 y_break);
2099 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2100 height - b, width, y_break);
2101 } else {
2102 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2103 height - b, width, y_break);
2104 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2105 y_break);
2106 }
2107 return;
2108 }
2109 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2110 height, width);
2111}
2112
e4fc2761
AD		 2113static __inline__ void updatescrollmode(struct display *p,
2114 struct fb_info *info,
1da177e4
LT		 2115 struct vc_data *vc)
2116{
e4fc2761 2117 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2118 int fh = vc->vc_font.height;
2119 int cap = info->flags;
e4fc2761
AD		 2120 u16 t = 0;
2121 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2122 info->fix.xpanstep);
2123 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2124 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2125 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2126 info->var.xres_virtual);
2127 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2128 divides(ypan, vc->vc_font.height) && vyres > yres;
2129 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2130 divides(ywrap, vc->vc_font.height) &&
244ab72d
KP		 2131 divides(vc->vc_font.height, vyres) &&
2132 divides(vc->vc_font.height, yres);
1da177e4 2133 int reading_fast = cap & FBINFO_READS_FAST;
e4fc2761
AD		 2134 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2135 !(cap & FBINFO_HWACCEL_DISABLED);
2136 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2137 !(cap & FBINFO_HWACCEL_DISABLED);
2138
2139 p->vrows = vyres/fh;
2140 if (yres > (fh * (vc->vc_rows + 1)))
2141 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2142 if ((yres % fh) && (vyres % fh < yres % fh))
1da177e4
LT		 2143 p->vrows--;
2144
2145 if (good_wrap || good_pan) {
2146 if (reading_fast || fast_copyarea)
e4fc2761
AD		 2147 p->scrollmode = good_wrap ?
2148 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1da177e4
LT		 2149 else
2150 p->scrollmode = good_wrap ? SCROLL_REDRAW :
2151 SCROLL_PAN_REDRAW;
2152 } else {
2153 if (reading_fast || (fast_copyarea && !fast_imageblit))
2154 p->scrollmode = SCROLL_MOVE;
2155 else
2156 p->scrollmode = SCROLL_REDRAW;
2157 }
2158}
2159
2160static int fbcon_resize(struct vc_data *vc, unsigned int width,
2161 unsigned int height)
2162{
2163 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2164 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2165 struct display *p = &fb_display[vc->vc_num];
2166 struct fb_var_screeninfo var = info->var;
e4fc2761
AD		 2167 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2168
2169 virt_w = FBCON_SWAP(ops->rotate, width, height);
2170 virt_h = FBCON_SWAP(ops->rotate, height, width);
2171 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2172 vc->vc_font.height);
2173 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2174 vc->vc_font.width);
2175 var.xres = virt_w * virt_fw;
2176 var.yres = virt_h * virt_fh;
1da177e4
LT		 2177 x_diff = info->var.xres - var.xres;
2178 y_diff = info->var.yres - var.yres;
e4fc2761
AD		 2179 if (x_diff < 0 || x_diff > virt_fw ||
2180 y_diff < 0 || y_diff > virt_fh) {
9791d763 2181 const struct fb_videomode *mode;
1da177e4
LT		 2182
2183 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2184 mode = fb_find_best_mode(&var, &info->modelist);
2185 if (mode == NULL)
2186 return -EINVAL;
3084a895 2187 display_to_var(&var, p);
1da177e4 2188 fb_videomode_to_var(&var, mode);
3084a895 2189
e4fc2761 2190 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
1da177e4 2191 return -EINVAL;
1da177e4
LT		 2192
2193 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
2194 if (CON_IS_VISIBLE(vc)) {
2195 var.activate = FB_ACTIVATE_NOW |
2196 FB_ACTIVATE_FORCE;
2197 fb_set_var(info, &var);
2198 }
2199 var_to_display(p, &info->var, info);
e4fc2761 2200 ops->var = info->var;
1da177e4
LT		 2201 }
2202 updatescrollmode(p, info, vc);
2203 return 0;
2204}
2205
2206static int fbcon_switch(struct vc_data *vc)
2207{
88fb2c6e 2208 struct fb_info *info, *old_info = NULL;
e4fc2761 2209 struct fbcon_ops *ops;
1da177e4
LT		 2210 struct display *p = &fb_display[vc->vc_num];
2211 struct fb_var_screeninfo var;
56f0d64d 2212 int i, prev_console, charcnt = 256;
1da177e4
LT		 2213
2214 info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2215 ops = info->fbcon_par;
1da177e4
LT		 2216
2217 if (softback_top) {
1da177e4
LT		 2218 if (softback_lines)
2219 fbcon_set_origin(vc);
2220 softback_top = softback_curr = softback_in = softback_buf;
2221 softback_lines = 0;
4d9c5b6e 2222 fbcon_update_softback(vc);
1da177e4
LT		 2223 }
2224
2225 if (logo_shown >= 0) {
2226 struct vc_data *conp2 = vc_cons[logo_shown].d;
2227
2228 if (conp2->vc_top == logo_lines
2229 && conp2->vc_bottom == conp2->vc_rows)
2230 conp2->vc_top = 0;
2231 logo_shown = FBCON_LOGO_CANSHOW;
2232 }
2233
e4fc2761 2234 prev_console = ops->currcon;
88fb2c6e
AD		 2235 if (prev_console != -1)
2236 old_info = registered_fb[con2fb_map[prev_console]];
1da177e4
LT		 2237 /*
2238 * FIXME: If we have multiple fbdev's loaded, we need to
2239 * update all info->currcon. Perhaps, we can place this
2240 * in a centralized structure, but this might break some
2241 * drivers.
2242 *
2243 * info->currcon = vc->vc_num;
2244 */
2245 for (i = 0; i < FB_MAX; i++) {
2246 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
e4fc2761 2247 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
1da177e4 2248
e4fc2761 2249 o->currcon = vc->vc_num;
1da177e4
LT		 2250 }
2251 }
2252 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2253 display_to_var(&var, p);
2254 var.activate = FB_ACTIVATE_NOW;
2255
2256 /*
2257 * make sure we don't unnecessarily trip the memcmp()
2258 * in fb_set_var()
2259 */
2260 info->var.activate = var.activate;
e4fc2761
AD		 2261 var.yoffset = info->var.yoffset;
2262 var.xoffset = info->var.xoffset;
2263 var.vmode = info->var.vmode;
1da177e4 2264 fb_set_var(info, &var);
e4fc2761 2265 ops->var = info->var;
1da177e4 2266
39942fd8
KP		 2267 if (old_info != NULL && (old_info != info ||
2268 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
88fb2c6e
AD		 2269 if (info->fbops->fb_set_par)
2270 info->fbops->fb_set_par(info);
a39bc34e 2271
5428b044 2272 if (old_info != info)
a39bc34e 2273 fbcon_del_cursor_timer(old_info);
88fb2c6e 2274 }
1da177e4 2275
212f2639
AD		 2276 if (fbcon_is_inactive(vc, info) ||
2277 ops->blank_state != FB_BLANK_UNBLANK)
2278 fbcon_del_cursor_timer(info);
2279 else
2280 fbcon_add_cursor_timer(info);
2281
b73deed3 2282 set_blitting_type(vc, info);
e4fc2761
AD		 2283 ops->cursor_reset = 1;
2284
b73deed3 2285 if (ops->rotate_font && ops->rotate_font(info, vc)) {
e4fc2761 2286 ops->rotate = FB_ROTATE_UR;
b73deed3 2287 set_blitting_type(vc, info);
e4fc2761 2288 }
1da177e4 2289
b8c90945 2290 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1da177e4 2291 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
56f0d64d
AD		 2292
2293 if (p->userfont)
2294 charcnt = FNTCHARCNT(vc->vc_font.data);
2295
2296 if (charcnt > 256)
2297 vc->vc_complement_mask <<= 1;
2298
1da177e4
LT		 2299 updatescrollmode(p, info, vc);
2300
2301 switch (p->scrollmode) {
2302 case SCROLL_WRAP_MOVE:
2303 scrollback_phys_max = p->vrows - vc->vc_rows;
2304 break;
2305 case SCROLL_PAN_MOVE:
2306 case SCROLL_PAN_REDRAW:
2307 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2308 if (scrollback_phys_max < 0)
2309 scrollback_phys_max = 0;
2310 break;
2311 default:
2312 scrollback_phys_max = 0;
2313 break;
2314 }
e4fc2761 2315
1da177e4
LT		 2316 scrollback_max = 0;
2317 scrollback_current = 0;
4e1567d3
AD		 2318
2319 if (!fbcon_is_inactive(vc, info)) {
2320 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2321 ops->update_start(info);
2322 }
2323
1da177e4
LT		 2324 fbcon_set_palette(vc, color_table);
2325 fbcon_clear_margins(vc, 0);
2326
2327 if (logo_shown == FBCON_LOGO_DRAW) {
2328
2329 logo_shown = fg_console;
2330 /* This is protected above by initmem_freed */
9c44e5f6 2331 fb_show_logo(info, ops->rotate);
1da177e4
LT		 2332 update_region(vc,
2333 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2334 vc->vc_size_row * (vc->vc_bottom -
2335 vc->vc_top) / 2);
2336 return 0;
2337 }
2338 return 1;
2339}
2340
2341static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2342 int blank)
2343{
994efacd
RP		 2344 struct fb_event event;
2345
1da177e4
LT		 2346 if (blank) {
2347 unsigned short charmask = vc->vc_hi_font_mask ?
2348 0x1ff : 0xff;
2349 unsigned short oldc;
2350
2351 oldc = vc->vc_video_erase_char;
2352 vc->vc_video_erase_char &= charmask;
2353 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2354 vc->vc_video_erase_char = oldc;
2355 }
994efacd
RP		 2356
2357
2358 event.info = info;
2359 event.data = &blank;
2360 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
1da177e4
LT		 2361}
2362
2363static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2364{
2365 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2366 struct fbcon_ops *ops = info->fbcon_par;
2367
2368 if (mode_switch) {
2369 struct fb_var_screeninfo var = info->var;
2370
2371 ops->graphics = 1;
2372
2373 if (!blank) {
47434847
AD		 2374 if (info->fbops->fb_save_state)
2375 info->fbops->fb_save_state(info);
1da177e4
LT		 2376 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2377 fb_set_var(info, &var);
2378 ops->graphics = 0;
e4fc2761 2379 ops->var = info->var;
47434847
AD		 2380 } else if (info->fbops->fb_restore_state)
2381 info->fbops->fb_restore_state(info);
1da177e4
LT		 2382 }
2383
2384 if (!fbcon_is_inactive(vc, info)) {
2385 if (ops->blank_state != blank) {
2386 ops->blank_state = blank;
2387 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2388 ops->cursor_flash = (!blank);
2389
2390 if (fb_blank(info, blank))
2391 fbcon_generic_blank(vc, info, blank);
2392 }
2393
88fb2c6e
AD		 2394 if (!blank)
2395 update_screen(vc);
2396 }
2397
212f2639
AD		 2398 if (fbcon_is_inactive(vc, info) ||
2399 ops->blank_state != FB_BLANK_UNBLANK)
88fb2c6e 2400 fbcon_del_cursor_timer(info);
212f2639
AD		 2401 else
2402 fbcon_add_cursor_timer(info);
1da177e4 2403
88fb2c6e 2404 return 0;
1da177e4
LT		 2405}
2406
1da177e4
LT		 2407static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2408{
2409 u8 *fontdata = vc->vc_font.data;
2410 u8 *data = font->data;
2411 int i, j;
2412
2413 font->width = vc->vc_font.width;
2414 font->height = vc->vc_font.height;
2415 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2416 if (!font->data)
2417 return 0;
2418
2419 if (font->width <= 8) {
2420 j = vc->vc_font.height;
2421 for (i = 0; i < font->charcount; i++) {
2422 memcpy(data, fontdata, j);
2423 memset(data + j, 0, 32 - j);
2424 data += 32;
2425 fontdata += j;
2426 }
2427 } else if (font->width <= 16) {
2428 j = vc->vc_font.height * 2;
2429 for (i = 0; i < font->charcount; i++) {
2430 memcpy(data, fontdata, j);
2431 memset(data + j, 0, 64 - j);
2432 data += 64;
2433 fontdata += j;
2434 }
2435 } else if (font->width <= 24) {
2436 for (i = 0; i < font->charcount; i++) {
2437 for (j = 0; j < vc->vc_font.height; j++) {
2438 *data++ = fontdata[0];
2439 *data++ = fontdata[1];
2440 *data++ = fontdata[2];
2441 fontdata += sizeof(u32);
2442 }
2443 memset(data, 0, 3 * (32 - j));
2444 data += 3 * (32 - j);
2445 }
2446 } else {
2447 j = vc->vc_font.height * 4;
2448 for (i = 0; i < font->charcount; i++) {
2449 memcpy(data, fontdata, j);
2450 memset(data + j, 0, 128 - j);
2451 data += 128;
2452 fontdata += j;
2453 }
2454 }
2455 return 0;
2456}
2457
2458static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2f4516db 2459 const u8 * data, int userfont)
1da177e4
LT		 2460{
2461 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
e4fc2761 2462 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2463 struct display *p = &fb_display[vc->vc_num];
2464 int resize;
2465 int cnt;
2466 char *old_data = NULL;
2467
2468 if (CON_IS_VISIBLE(vc) && softback_lines)
2469 fbcon_set_origin(vc);
2470
2471 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2472 if (p->userfont)
2473 old_data = vc->vc_font.data;
2474 if (userfont)
2475 cnt = FNTCHARCNT(data);
2476 else
2477 cnt = 256;
2f4516db 2478 vc->vc_font.data = (void *)(p->fontdata = data);
1da177e4
LT		 2479 if ((p->userfont = userfont))
2480 REFCOUNT(data)++;
2481 vc->vc_font.width = w;
2482 vc->vc_font.height = h;
2483 if (vc->vc_hi_font_mask && cnt == 256) {
2484 vc->vc_hi_font_mask = 0;
2485 if (vc->vc_can_do_color) {
2486 vc->vc_complement_mask >>= 1;
2487 vc->vc_s_complement_mask >>= 1;
2488 }
2489
2490 /* ++Edmund: reorder the attribute bits */
2491 if (vc->vc_can_do_color) {
2492 unsigned short *cp =
2493 (unsigned short *) vc->vc_origin;
2494 int count = vc->vc_screenbuf_size / 2;
2495 unsigned short c;
2496 for (; count > 0; count--, cp++) {
2497 c = scr_readw(cp);
2498 scr_writew(((c & 0xfe00) >> 1) |
2499 (c & 0xff), cp);
2500 }
2501 c = vc->vc_video_erase_char;
2502 vc->vc_video_erase_char =
2503 ((c & 0xfe00) >> 1) | (c & 0xff);
2504 vc->vc_attr >>= 1;
2505 }
2506 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2507 vc->vc_hi_font_mask = 0x100;
2508 if (vc->vc_can_do_color) {
2509 vc->vc_complement_mask <<= 1;
2510 vc->vc_s_complement_mask <<= 1;
2511 }
2512
2513 /* ++Edmund: reorder the attribute bits */
2514 {
2515 unsigned short *cp =
2516 (unsigned short *) vc->vc_origin;
2517 int count = vc->vc_screenbuf_size / 2;
2518 unsigned short c;
2519 for (; count > 0; count--, cp++) {
2520 unsigned short newc;
2521 c = scr_readw(cp);
2522 if (vc->vc_can_do_color)
2523 newc =
2524 ((c & 0xff00) << 1) | (c &
2525 0xff);
2526 else
2527 newc = c & ~0x100;
2528 scr_writew(newc, cp);
2529 }
2530 c = vc->vc_video_erase_char;
2531 if (vc->vc_can_do_color) {
2532 vc->vc_video_erase_char =
2533 ((c & 0xff00) << 1) | (c & 0xff);
2534 vc->vc_attr <<= 1;
2535 } else
2536 vc->vc_video_erase_char = c & ~0x100;
2537 }
2538
2539 }
2540
2541 if (resize) {
e4fc2761
AD		 2542 int cols, rows;
2543
2544 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2545 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2546 cols /= w;
2547 rows /= h;
2548 vc_resize(vc, cols, rows);
4d9c5b6e
AD		 2549 if (CON_IS_VISIBLE(vc) && softback_buf)
2550 fbcon_update_softback(vc);
1da177e4
LT		 2551 } else if (CON_IS_VISIBLE(vc)
2552 && vc->vc_mode == KD_TEXT) {
2553 fbcon_clear_margins(vc, 0);
2554 update_screen(vc);
2555 }
2556
2557 if (old_data && (--REFCOUNT(old_data) == 0))
2558 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2559 return 0;
2560}
2561
2562static int fbcon_copy_font(struct vc_data *vc, int con)
2563{
2564 struct display *od = &fb_display[con];
2565 struct console_font *f = &vc->vc_font;
2566
2567 if (od->fontdata == f->data)
2568 return 0; /* already the same font... */
2569 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2570}
2571
2572/*
2573 * User asked to set font; we are guaranteed that
2574 * a) width and height are in range 1..32
2575 * b) charcount does not exceed 512
2576 * but lets not assume that, since someone might someday want to use larger
2577 * fonts. And charcount of 512 is small for unicode support.
2578 *
2579 * However, user space gives the font in 32 rows , regardless of
2580 * actual font height. So a new API is needed if support for larger fonts
2581 * is ever implemented.
2582 */
2583
2584static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2585{
2d2699d9 2586 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1da177e4
LT		 2587 unsigned charcount = font->charcount;
2588 int w = font->width;
2589 int h = font->height;
2590 int size;
2591 int i, csum;
2592 u8 *new_data, *data = font->data;
2593 int pitch = (font->width+7) >> 3;
2594
2595 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2596 * If not this check should be changed to charcount < 256 */
2597 if (charcount != 256 && charcount != 512)
2598 return -EINVAL;
2599
2d2699d9
AD		 2600 /* Make sure drawing engine can handle the font */
2601 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2602 !(info->pixmap.blit_y & (1 << (font->height - 1))))
2603 return -EINVAL;
38b4982c
AD		 2604
2605 /* Make sure driver can handle the font length */
2606 if (fbcon_invalid_charcount(info, charcount))
2607 return -EINVAL;
2d2699d9 2608
1da177e4
LT		 2609 size = h * pitch * charcount;
2610
2611 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2612
2613 if (!new_data)
2614 return -ENOMEM;
2615
2616 new_data += FONT_EXTRA_WORDS * sizeof(int);
2617 FNTSIZE(new_data) = size;
2618 FNTCHARCNT(new_data) = charcount;
2619 REFCOUNT(new_data) = 0; /* usage counter */
2620 for (i=0; i< charcount; i++) {
2621 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2622 }
2623
2624 /* Since linux has a nice crc32 function use it for counting font
2625 * checksums. */
2626 csum = crc32(0, new_data, size);
2627
2628 FNTSUM(new_data) = csum;
2629 /* Check if the same font is on some other console already */
e614b18d 2630 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 2631 struct vc_data *tmp = vc_cons[i].d;
2632
2633 if (fb_display[i].userfont &&
2634 fb_display[i].fontdata &&
2635 FNTSUM(fb_display[i].fontdata) == csum &&
2636 FNTSIZE(fb_display[i].fontdata) == size &&
2637 tmp->vc_font.width == w &&
2638 !memcmp(fb_display[i].fontdata, new_data, size)) {
2639 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2f4516db 2640 new_data = (u8 *)fb_display[i].fontdata;
1da177e4
LT		 2641 break;
2642 }
2643 }
2644 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2645}
2646
2647static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2648{
2649 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2f4516db 2650 const struct font_desc *f;
1da177e4
LT		 2651
2652 if (!name)
2d2699d9
AD		 2653 f = get_default_font(info->var.xres, info->var.yres,
2654 info->pixmap.blit_x, info->pixmap.blit_y);
1da177e4
LT		 2655 else if (!(f = find_font(name)))
2656 return -ENOENT;
2657
2658 font->width = f->width;
2659 font->height = f->height;
2660 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2661}
2662
2663static u16 palette_red[16];
2664static u16 palette_green[16];
2665static u16 palette_blue[16];
2666
2667static struct fb_cmap palette_cmap = {
2668 0, 16, palette_red, palette_green, palette_blue, NULL
2669};
2670
2671static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2672{
2673 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2674 int i, j, k, depth;
2675 u8 val;
2676
2677 if (fbcon_is_inactive(vc, info))
2678 return -EINVAL;
2679
2680 if (!CON_IS_VISIBLE(vc))
2681 return 0;
2682
b8c90945 2683 depth = fb_get_color_depth(&info->var, &info->fix);
1da177e4
LT		 2684 if (depth > 3) {
2685 for (i = j = 0; i < 16; i++) {
2686 k = table[i];
2687 val = vc->vc_palette[j++];
2688 palette_red[k] = (val << 8) | val;
2689 val = vc->vc_palette[j++];
2690 palette_green[k] = (val << 8) | val;
2691 val = vc->vc_palette[j++];
2692 palette_blue[k] = (val << 8) | val;
2693 }
2694 palette_cmap.len = 16;
2695 palette_cmap.start = 0;
2696 /*
2697 * If framebuffer is capable of less than 16 colors,
2698 * use default palette of fbcon.
2699 */
2700 } else
2701 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2702
2703 return fb_set_cmap(&palette_cmap, info);
2704}
2705
2706static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2707{
2708 unsigned long p;
2709 int line;
2710
2711 if (vc->vc_num != fg_console || !softback_lines)
2712 return (u16 *) (vc->vc_origin + offset);
2713 line = offset / vc->vc_size_row;
2714 if (line >= softback_lines)
2715 return (u16 *) (vc->vc_origin + offset -
2716 softback_lines * vc->vc_size_row);
2717 p = softback_curr + offset;
2718 if (p >= softback_end)
2719 p += softback_buf - softback_end;
2720 return (u16 *) p;
2721}
2722
2723static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2724 int *px, int *py)
2725{
2726 unsigned long ret;
2727 int x, y;
2728
2729 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2730 unsigned long offset = (pos - vc->vc_origin) / 2;
2731
2732 x = offset % vc->vc_cols;
2733 y = offset / vc->vc_cols;
2734 if (vc->vc_num == fg_console)
2735 y += softback_lines;
2736 ret = pos + (vc->vc_cols - x) * 2;
2737 } else if (vc->vc_num == fg_console && softback_lines) {
2738 unsigned long offset = pos - softback_curr;
2739
2740 if (pos < softback_curr)
2741 offset += softback_end - softback_buf;
2742 offset /= 2;
2743 x = offset % vc->vc_cols;
2744 y = offset / vc->vc_cols;
2745 ret = pos + (vc->vc_cols - x) * 2;
2746 if (ret == softback_end)
2747 ret = softback_buf;
2748 if (ret == softback_in)
2749 ret = vc->vc_origin;
2750 } else {
2751 /* Should not happen */
2752 x = y = 0;
2753 ret = vc->vc_origin;
2754 }
2755 if (px)
2756 *px = x;
2757 if (py)
2758 *py = y;
2759 return ret;
2760}
2761
2762/* As we might be inside of softback, we may work with non-contiguous buffer,
2763 that's why we have to use a separate routine. */
2764static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2765{
2766 while (cnt--) {
2767 u16 a = scr_readw(p);
2768 if (!vc->vc_can_do_color)
2769 a ^= 0x0800;
2770 else if (vc->vc_hi_font_mask == 0x100)
2771 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2772 (((a) & 0x0e00) << 4);
2773 else
2774 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2775 (((a) & 0x0700) << 4);
2776 scr_writew(a, p++);
2777 if (p == (u16 *) softback_end)
2778 p = (u16 *) softback_buf;
2779 if (p == (u16 *) softback_in)
2780 p = (u16 *) vc->vc_origin;
2781 }
2782}
2783
2784static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2785{
2786 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
e4fc2761 2787 struct fbcon_ops *ops = info->fbcon_par;
1da177e4
LT		 2788 struct display *p = &fb_display[fg_console];
2789 int offset, limit, scrollback_old;
2790
2791 if (softback_top) {
2792 if (vc->vc_num != fg_console)
2793 return 0;
2794 if (vc->vc_mode != KD_TEXT || !lines)
2795 return 0;
2796 if (logo_shown >= 0) {
2797 struct vc_data *conp2 = vc_cons[logo_shown].d;
2798
2799 if (conp2->vc_top == logo_lines
2800 && conp2->vc_bottom == conp2->vc_rows)
2801 conp2->vc_top = 0;
2802 if (logo_shown == vc->vc_num) {
2803 unsigned long p, q;
2804 int i;
2805
2806 p = softback_in;
2807 q = vc->vc_origin +
2808 logo_lines * vc->vc_size_row;
2809 for (i = 0; i < logo_lines; i++) {
2810 if (p == softback_top)
2811 break;
2812 if (p == softback_buf)
2813 p = softback_end;
2814 p -= vc->vc_size_row;
2815 q -= vc->vc_size_row;
2816 scr_memcpyw((u16 *) q, (u16 *) p,
2817 vc->vc_size_row);
2818 }
308af929 2819 softback_in = softback_curr = p;
1da177e4
LT		 2820 update_region(vc, vc->vc_origin,
2821 logo_lines * vc->vc_cols);
2822 }
2823 logo_shown = FBCON_LOGO_CANSHOW;
2824 }
2825 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2826 fbcon_redraw_softback(vc, p, lines);
2827 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2828 return 0;
2829 }
2830
2831 if (!scrollback_phys_max)
2832 return -ENOSYS;
2833
2834 scrollback_old = scrollback_current;
2835 scrollback_current -= lines;
2836 if (scrollback_current < 0)
2837 scrollback_current = 0;
2838 else if (scrollback_current > scrollback_max)
2839 scrollback_current = scrollback_max;
2840 if (scrollback_current == scrollback_old)
2841 return 0;
2842
2843 if (fbcon_is_inactive(vc, info))
2844 return 0;
2845
2846 fbcon_cursor(vc, CM_ERASE);
2847
2848 offset = p->yscroll - scrollback_current;
2849 limit = p->vrows;
2850 switch (p->scrollmode) {
2851 case SCROLL_WRAP_MOVE:
2852 info->var.vmode |= FB_VMODE_YWRAP;
2853 break;
2854 case SCROLL_PAN_MOVE:
2855 case SCROLL_PAN_REDRAW:
2856 limit -= vc->vc_rows;
2857 info->var.vmode &= ~FB_VMODE_YWRAP;
2858 break;
2859 }
2860 if (offset < 0)
2861 offset += limit;
2862 else if (offset >= limit)
2863 offset -= limit;
e4fc2761
AD		 2864
2865 ops->var.xoffset = 0;
2866 ops->var.yoffset = offset * vc->vc_font.height;
2867 ops->update_start(info);
2868
1da177e4
LT		 2869 if (!scrollback_current)
2870 fbcon_cursor(vc, CM_DRAW);
2871 return 0;
2872}
2873
2874static int fbcon_set_origin(struct vc_data *vc)
2875{
2876 if (softback_lines)
2877 fbcon_scrolldelta(vc, softback_lines);
2878 return 0;
2879}
2880
2881static void fbcon_suspended(struct fb_info *info)
2882{
2883 struct vc_data *vc = NULL;
2884 struct fbcon_ops *ops = info->fbcon_par;
2885
2886 if (!ops || ops->currcon < 0)
2887 return;
2888 vc = vc_cons[ops->currcon].d;
2889
2890 /* Clear cursor, restore saved data */
2891 fbcon_cursor(vc, CM_ERASE);
2892}
2893
2894static void fbcon_resumed(struct fb_info *info)
2895{
2896 struct vc_data *vc;
2897 struct fbcon_ops *ops = info->fbcon_par;
2898
2899 if (!ops || ops->currcon < 0)
2900 return;
2901 vc = vc_cons[ops->currcon].d;
2902
2903 update_screen(vc);
2904}
2905
2906static void fbcon_modechanged(struct fb_info *info)
2907{
2908 struct fbcon_ops *ops = info->fbcon_par;
2909 struct vc_data *vc;
2910 struct display *p;
2911 int rows, cols;
2912
2913 if (!ops || ops->currcon < 0)
2914 return;
2915 vc = vc_cons[ops->currcon].d;
e4fc2761
AD		 2916 if (vc->vc_mode != KD_TEXT ||
2917 registered_fb[con2fb_map[ops->currcon]] != info)
1da177e4
LT		 2918 return;
2919
2920 p = &fb_display[vc->vc_num];
b73deed3 2921 set_blitting_type(vc, info);
1da177e4
LT		 2922
2923 if (CON_IS_VISIBLE(vc)) {
2924 var_to_display(p, &info->var, info);
e4fc2761
AD		 2925 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2926 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2927 cols /= vc->vc_font.width;
2928 rows /= vc->vc_font.height;
1da177e4
LT		 2929 vc_resize(vc, cols, rows);
2930 updatescrollmode(p, info, vc);
2931 scrollback_max = 0;
2932 scrollback_current = 0;
4e1567d3
AD		 2933
2934 if (!fbcon_is_inactive(vc, info)) {
2935 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2936 ops->update_start(info);
2937 }
2938
1da177e4
LT		 2939 fbcon_set_palette(vc, color_table);
2940 update_screen(vc);
4d9c5b6e
AD		 2941 if (softback_buf)
2942 fbcon_update_softback(vc);
1da177e4
LT		 2943 }
2944}
2945
7726e9e1
AD		 2946static void fbcon_set_all_vcs(struct fb_info *info)
2947{
2948 struct fbcon_ops *ops = info->fbcon_par;
2949 struct vc_data *vc;
2950 struct display *p;
95d67bb1 2951 int i, rows, cols, fg = -1;
7726e9e1
AD		 2952
2953 if (!ops || ops->currcon < 0)
2954 return;
2955
e614b18d 2956 for (i = first_fb_vc; i <= last_fb_vc; i++) {
7726e9e1
AD		 2957 vc = vc_cons[i].d;
2958 if (!vc || vc->vc_mode != KD_TEXT ||
2959 registered_fb[con2fb_map[i]] != info)
2960 continue;
2961
95d67bb1
AD		 2962 if (CON_IS_VISIBLE(vc)) {
2963 fg = i;
2964 continue;
2965 }
2966
7726e9e1 2967 p = &fb_display[vc->vc_num];
b73deed3 2968 set_blitting_type(vc, info);
7726e9e1 2969 var_to_display(p, &info->var, info);
95d67bb1
AD		 2970 cols = FBCON_SWAP(p->rotate, info->var.xres, info->var.yres);
2971 rows = FBCON_SWAP(p->rotate, info->var.yres, info->var.xres);
e4fc2761
AD		 2972 cols /= vc->vc_font.width;
2973 rows /= vc->vc_font.height;
7726e9e1 2974 vc_resize(vc, cols, rows);
7726e9e1 2975 }
04a2fe57 2976
95d67bb1
AD		 2977 if (fg != -1)
2978 fbcon_modechanged(info);
7726e9e1
AD		 2979}
2980
1da177e4
LT		 2981static int fbcon_mode_deleted(struct fb_info *info,
2982 struct fb_videomode *mode)
2983{
2984 struct fb_info *fb_info;
2985 struct display *p;
2986 int i, j, found = 0;
2987
2988 /* before deletion, ensure that mode is not in use */
2989 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2990 j = con2fb_map[i];
2991 if (j == -1)
2992 continue;
2993 fb_info = registered_fb[j];
2994 if (fb_info != info)
2995 continue;
2996 p = &fb_display[i];
2997 if (!p || !p->mode)
2998 continue;
2999 if (fb_mode_is_equal(p->mode, mode)) {
3000 found = 1;
3001 break;
3002 }
3003 }
3004 return found;
3005}
3006
e614b18d
AD		 3007static int fbcon_fb_unregistered(int idx)
3008{
3009 int i;
3010
3011 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3012 if (con2fb_map[i] == idx)
3013 con2fb_map[i] = -1;
3014 }
3015
3016 if (idx == info_idx) {
3017 info_idx = -1;
3018
3019 for (i = 0; i < FB_MAX; i++) {
3020 if (registered_fb[i] != NULL) {
3021 info_idx = i;
3022 break;
3023 }
3024 }
3025 }
3026
3027 if (info_idx != -1) {
3028 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3029 if (con2fb_map[i] == -1)
3030 con2fb_map[i] = info_idx;
3031 }
3032 }
3033
3034 if (!num_registered_fb)
3035 unregister_con_driver(&fb_con);
3036
3037 return 0;
3038}
3039
1da177e4
LT		 3040static int fbcon_fb_registered(int idx)
3041{
3042 int ret = 0, i;
3043
3044 if (info_idx == -1) {
e614b18d 3045 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3046 if (con2fb_map_boot[i] == idx) {
3047 info_idx = idx;
3048 break;
3049 }
3050 }
e614b18d 3051
1da177e4
LT		 3052 if (info_idx != -1)
3053 ret = fbcon_takeover(1);
3054 } else {
e614b18d 3055 for (i = first_fb_vc; i <= last_fb_vc; i++) {
5428b044
AD		 3056 if (con2fb_map_boot[i] == idx &&
3057 con2fb_map[i] == -1)
1da177e4
LT		 3058 set_con2fb_map(i, idx, 0);
3059 }
3060 }
3061
3062 return ret;
3063}
3064
3065static void fbcon_fb_blanked(struct fb_info *info, int blank)
3066{
3067 struct fbcon_ops *ops = info->fbcon_par;
3068 struct vc_data *vc;
3069
3070 if (!ops || ops->currcon < 0)
3071 return;
3072
3073 vc = vc_cons[ops->currcon].d;
3074 if (vc->vc_mode != KD_TEXT ||
3075 registered_fb[con2fb_map[ops->currcon]] != info)
3076 return;
3077
3078 if (CON_IS_VISIBLE(vc)) {
3079 if (blank)
3080 do_blank_screen(0);
3081 else
3082 do_unblank_screen(0);
3083 }
3084 ops->blank_state = blank;
3085}
3086
3087static void fbcon_new_modelist(struct fb_info *info)
3088{
3089 int i;
3090 struct vc_data *vc;
3091 struct fb_var_screeninfo var;
9791d763 3092 const struct fb_videomode *mode;
1da177e4 3093
e614b18d 3094 for (i = first_fb_vc; i <= last_fb_vc; i++) {
1da177e4
LT		 3095 if (registered_fb[con2fb_map[i]] != info)
3096 continue;
3097 if (!fb_display[i].mode)
3098 continue;
3099 vc = vc_cons[i].d;
3100 display_to_var(&var, &fb_display[i]);
8fb6567e
MJ		 3101 mode = fb_find_nearest_mode(fb_display[i].mode,
3102 &info->modelist);
1da177e4
LT		 3103 fb_videomode_to_var(&var, mode);
3104
3105 if (vc)
3106 fbcon_set_disp(info, &var, vc);
3107 else
3108 fbcon_preset_disp(info, &var, i);
3109
3110 }
3111}
3112
38a3dc51
AD		 3113static void fbcon_get_requirement(struct fb_info *info,
3114 struct fb_blit_caps *caps)
3115{
3116 struct vc_data *vc;
3117 struct display *p;
38a3dc51
AD		 3118
3119 if (caps->flags) {
167f07f1 3120 int i, charcnt;
38a3dc51
AD		 3121
3122 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3123 vc = vc_cons[i].d;
167f07f1
AD		 3124 if (vc && vc->vc_mode == KD_TEXT &&
3125 info->node == con2fb_map[i]) {
38a3dc51
AD		 3126 p = &fb_display[i];
3127 caps->x |= 1 << (vc->vc_font.width - 1);
3128 caps->y |= 1 << (vc->vc_font.height - 1);
3129 charcnt = (p->userfont) ?
3130 FNTCHARCNT(p->fontdata) : 256;
3131 if (caps->len < charcnt)
3132 caps->len = charcnt;
3133 }
3134 }
3135 } else {
3136 vc = vc_cons[fg_console].d;
3137
167f07f1
AD		 3138 if (vc && vc->vc_mode == KD_TEXT &&
3139 info->node == con2fb_map[fg_console]) {
38a3dc51 3140 p = &fb_display[fg_console];
167f07f1
AD		 3141 caps->x = 1 << (vc->vc_font.width - 1);
3142 caps->y = 1 << (vc->vc_font.height - 1);
3143 caps->len = (p->userfont) ?
38a3dc51 3144 FNTCHARCNT(p->fontdata) : 256;
38a3dc51
AD		 3145 }
3146 }
3147}
3148
1da177e4
LT		 3149static int fbcon_event_notify(struct notifier_block *self,
3150 unsigned long action, void *data)
3151{
3152 struct fb_event *event = data;
3153 struct fb_info *info = event->info;
3154 struct fb_videomode *mode;
3155 struct fb_con2fbmap *con2fb;
38a3dc51 3156 struct fb_blit_caps *caps;
1da177e4
LT		 3157 int ret = 0;
3158
e614b18d
AD		 3159 /*
3160 * ignore all events except driver registration and deregistration
3161 * if fbcon is not active
3162 */
3163 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
3164 action == FB_EVENT_FB_UNREGISTERED))
3165 goto done;
3166
1da177e4
LT		 3167 switch(action) {
3168 case FB_EVENT_SUSPEND:
3169 fbcon_suspended(info);
3170 break;
3171 case FB_EVENT_RESUME:
3172 fbcon_resumed(info);
3173 break;
3174 case FB_EVENT_MODE_CHANGE:
3175 fbcon_modechanged(info);
3176 break;
7726e9e1
AD		 3177 case FB_EVENT_MODE_CHANGE_ALL:
3178 fbcon_set_all_vcs(info);
3179 break;
1da177e4
LT		 3180 case FB_EVENT_MODE_DELETE:
3181 mode = event->data;
3182 ret = fbcon_mode_deleted(info, mode);
3183 break;
3184 case FB_EVENT_FB_REGISTERED:
3185 ret = fbcon_fb_registered(info->node);
3186 break;
e614b18d
AD		 3187 case FB_EVENT_FB_UNREGISTERED:
3188 ret = fbcon_fb_unregistered(info->node);
3189 break;
1da177e4
LT		 3190 case FB_EVENT_SET_CONSOLE_MAP:
3191 con2fb = event->data;
3192 ret = set_con2fb_map(con2fb->console - 1,
3193 con2fb->framebuffer, 1);
3194 break;
3195 case FB_EVENT_GET_CONSOLE_MAP:
3196 con2fb = event->data;
3197 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
3198 break;
3199 case FB_EVENT_BLANK:
3200 fbcon_fb_blanked(info, *(int *)event->data);
3201 break;
3202 case FB_EVENT_NEW_MODELIST:
3203 fbcon_new_modelist(info);
3204 break;
38a3dc51
AD		 3205 case FB_EVENT_GET_REQ:
3206 caps = event->data;
3207 fbcon_get_requirement(info, caps);
3208 break;
1da177e4
LT		 3209 }
3210
e614b18d 3211done:
1da177e4
LT		 3212 return ret;
3213}
3214
3215/*
3216 * The console `switch' structure for the frame buffer based console
3217 */
3218
3219static const struct consw fb_con = {
3220 .owner = THIS_MODULE,
3221 .con_startup = fbcon_startup,
3222 .con_init = fbcon_init,
3223 .con_deinit = fbcon_deinit,
3224 .con_clear = fbcon_clear,
3225 .con_putc = fbcon_putc,
3226 .con_putcs = fbcon_putcs,
3227 .con_cursor = fbcon_cursor,
3228 .con_scroll = fbcon_scroll,
3229 .con_bmove = fbcon_bmove,
3230 .con_switch = fbcon_switch,
3231 .con_blank = fbcon_blank,
3232 .con_font_set = fbcon_set_font,
3233 .con_font_get = fbcon_get_font,
3234 .con_font_default = fbcon_set_def_font,
3235 .con_font_copy = fbcon_copy_font,
3236 .con_set_palette = fbcon_set_palette,
3237 .con_scrolldelta = fbcon_scrolldelta,
3238 .con_set_origin = fbcon_set_origin,
3239 .con_invert_region = fbcon_invert_region,
3240 .con_screen_pos = fbcon_screen_pos,
3241 .con_getxy = fbcon_getxy,
3242 .con_resize = fbcon_resize,
3243};
3244
3245static struct notifier_block fbcon_event_notifier = {
3246 .notifier_call = fbcon_event_notify,
3247};
3248
9a179176
AD		 3249static ssize_t store_rotate(struct class_device *class_device,
3250 const char *buf, size_t count)
3251{
3252 struct fb_info *info;
3253 int rotate, idx;
3254 char **last = NULL;
3255
e614b18d
AD		 3256 if (fbcon_has_exited)
3257 return count;
3258
9a179176
AD		 3259 acquire_console_sem();
3260 idx = con2fb_map[fg_console];
3261
3262 if (idx == -1 || registered_fb[idx] == NULL)
3263 goto err;
3264
3265 info = registered_fb[idx];
3266 rotate = simple_strtoul(buf, last, 0);
3267 fbcon_rotate(info, rotate);
3268err:
3269 release_console_sem();
3270 return count;
3271}
3272
3273static ssize_t store_rotate_all(struct class_device *class_device,
3274 const char *buf, size_t count)
3275{
3276 struct fb_info *info;
3277 int rotate, idx;
3278 char **last = NULL;
3279
e614b18d
AD		 3280 if (fbcon_has_exited)
3281 return count;
3282
9a179176
AD		 3283 acquire_console_sem();
3284 idx = con2fb_map[fg_console];
3285
3286 if (idx == -1 || registered_fb[idx] == NULL)
3287 goto err;
3288
3289 info = registered_fb[idx];
3290 rotate = simple_strtoul(buf, last, 0);
3291 fbcon_rotate_all(info, rotate);
3292err:
3293 release_console_sem();
3294 return count;
3295}
3296
3297static ssize_t show_rotate(struct class_device *class_device, char *buf)
3298{
3299 struct fb_info *info;
3300 int rotate = 0, idx;
3301
e614b18d
AD		 3302 if (fbcon_has_exited)
3303 return 0;
3304
9a179176
AD		 3305 acquire_console_sem();
3306 idx = con2fb_map[fg_console];
3307
3308 if (idx == -1 || registered_fb[idx] == NULL)
3309 goto err;
3310
3311 info = registered_fb[idx];
3312 rotate = fbcon_get_rotate(info);
3313err:
3314 release_console_sem();
3315 return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3316}
3317
acba9cd0
AD		 3318static ssize_t show_cursor_blink(struct class_device *class_device, char *buf)
3319{
3320 struct fb_info *info;
3321 struct fbcon_ops *ops;
3322 int idx, blink = -1;
3323
3324 if (fbcon_has_exited)
3325 return 0;
3326
3327 acquire_console_sem();
3328 idx = con2fb_map[fg_console];
3329
3330 if (idx == -1 || registered_fb[idx] == NULL)
3331 goto err;
3332
3333 info = registered_fb[idx];
3334 ops = info->fbcon_par;
3335
3336 if (!ops)
3337 goto err;
3338
3339 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3340err:
3341 release_console_sem();
3342 return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3343}
3344
3345static ssize_t store_cursor_blink(struct class_device *clas_device,
3346 const char *buf, size_t count)
3347{
3348 struct fb_info *info;
3349 int blink, idx;
3350 char **last = NULL;
3351
3352 if (fbcon_has_exited)
3353 return count;
3354
3355 acquire_console_sem();
3356 idx = con2fb_map[fg_console];
3357
3358 if (idx == -1 || registered_fb[idx] == NULL)
3359 goto err;
3360
3361 info = registered_fb[idx];
3362
3363 if (!info->fbcon_par)
3364 goto err;
3365
3366 blink = simple_strtoul(buf, last, 0);
3367
3368 if (blink) {
3369 fbcon_cursor_noblink = 0;
3370 fbcon_add_cursor_timer(info);
3371 } else {
3372 fbcon_cursor_noblink = 1;
3373 fbcon_del_cursor_timer(info);
3374 }
3375
3376err:
3377 release_console_sem();
3378 return count;
3379}
3380
9a179176
AD		 3381static struct class_device_attribute class_device_attrs[] = {
3382 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3383 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
acba9cd0
AD		 3384 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3385 store_cursor_blink),
9a179176
AD		 3386};
3387
3388static int fbcon_init_class_device(void)
3389{
0a727dea
AD		 3390 int i, error = 0;
3391
3392 fbcon_has_sysfs = 1;
3393
3394 for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++) {
3395 error = class_device_create_file(fbcon_class_device,
3396 &class_device_attrs[i]);
3397
3398 if (error)
3399 break;
3400 }
3401
3402 if (error) {
3403 while (--i >= 0)
3404 class_device_remove_file(fbcon_class_device,
3405 &class_device_attrs[i]);
3406
3407 fbcon_has_sysfs = 0;
3408 }
9a179176 3409
9a179176
AD		 3410 return 0;
3411}
3412
5428b044 3413static void fbcon_start(void)
1da177e4 3414{
5428b044
AD		 3415 if (num_registered_fb) {
3416 int i;
9a179176 3417
5428b044 3418 acquire_console_sem();
1da177e4 3419
1da177e4
LT		 3420 for (i = 0; i < FB_MAX; i++) {
3421 if (registered_fb[i] != NULL) {
3422 info_idx = i;
3423 break;
3424 }
3425 }
5428b044
AD		 3426
3427 release_console_sem();
1da177e4
LT		 3428 fbcon_takeover(0);
3429 }
9a179176
AD		 3430}
3431
5428b044 3432static void fbcon_exit(void)
9a179176 3433{
e55186fe
AD		 3434 struct fb_info *info;
3435 int i, j, mapped;
3436
e614b18d
AD		 3437 if (fbcon_has_exited)
3438 return;
3439
e55186fe 3440#ifdef CONFIG_ATARI
956295d5 3441 free_irq(IRQ_AUTO_4, fb_vbl_handler);
e55186fe
AD		 3442#endif
3443#ifdef CONFIG_MAC
3444 if (MACH_IS_MAC && vbl_detected)
956295d5 3445 free_irq(IRQ_MAC_VBL, fb_vbl_handler);
e55186fe
AD		 3446#endif
3447
3448 kfree((void *)softback_buf);
5428b044 3449 softback_buf = 0UL;
e55186fe
AD		 3450
3451 for (i = 0; i < FB_MAX; i++) {
3452 mapped = 0;
3453 info = registered_fb[i];
3454
3455 if (info == NULL)
3456 continue;
3457
e614b18d
AD		 3458 for (j = first_fb_vc; j <= last_fb_vc; j++) {
3459 if (con2fb_map[j] == i)
e55186fe 3460 mapped = 1;
e55186fe
AD		 3461 }
3462
3463 if (mapped) {
3464 if (info->fbops->fb_release)
3465 info->fbops->fb_release(info, 0);
3466 module_put(info->fbops->owner);
5428b044
AD		 3467
3468 if (info->fbcon_par) {
e299dd4d
DJ		 3469 struct fbcon_ops *ops = info->fbcon_par;
3470
5428b044 3471 fbcon_del_cursor_timer(info);
e299dd4d 3472 kfree(ops->cursor_src);
5428b044
AD		 3473 kfree(info->fbcon_par);
3474 info->fbcon_par = NULL;
3475 }
3476
3477 if (info->queue.func == fb_flashcursor)
3478 info->queue.func = NULL;
e55186fe
AD		 3479 }
3480 }
3481
e614b18d 3482 fbcon_has_exited = 1;
5428b044
AD		 3483}
3484
3485static int __init fb_console_init(void)
3486{
3487 int i;
3488
3489 acquire_console_sem();
3490 fb_register_client(&fbcon_event_notifier);
3491 fbcon_class_device =
5bd42536 3492 class_device_create(fb_class, NULL, MKDEV(0, 0), NULL, "fbcon");
5428b044
AD		 3493
3494 if (IS_ERR(fbcon_class_device)) {
3495 printk(KERN_WARNING "Unable to create class_device "
3496 "for fbcon; errno = %ld\n",
3497 PTR_ERR(fbcon_class_device));
3498 fbcon_class_device = NULL;
3499 } else
3500 fbcon_init_class_device();
3501
3502 for (i = 0; i < MAX_NR_CONSOLES; i++)
3503 con2fb_map[i] = -1;
3504
3505 release_console_sem();
3506 fbcon_start();
3507 return 0;
3508}
3509
3510module_init(fb_console_init);
3511
3512#ifdef MODULE
3513
e614b18d 3514static void __exit fbcon_deinit_class_device(void)
5428b044
AD		 3515{
3516 int i;
3517
0a727dea
AD		 3518 if (fbcon_has_sysfs) {
3519 for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
3520 class_device_remove_file(fbcon_class_device,
3521 &class_device_attrs[i]);
3522
3523 fbcon_has_sysfs = 0;
3524 }
9a179176
AD		 3525}
3526
1da177e4
LT		 3527static void __exit fb_console_exit(void)
3528{
3529 acquire_console_sem();
3530 fb_unregister_client(&fbcon_event_notifier);
5428b044 3531 fbcon_deinit_class_device();
5bd42536 3532 class_device_destroy(fb_class, MKDEV(0, 0));
e614b18d 3533 fbcon_exit();
1da177e4 3534 release_console_sem();
e614b18d 3535 unregister_con_driver(&fb_con);
1da177e4
LT		 3536}
3537
3538module_exit(fb_console_exit);
3539
3540#endif
3541
3542MODULE_LICENSE("GPL");
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