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1da177e4 LT |
1 | /* |
2 | * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver | |
3 | * | |
4 | * Copyright (C) 1995 Geert Uytterhoeven | |
5 | * | |
6 | * | |
7 | * This file is based on the original Amiga console driver (amicon.c): | |
8 | * | |
9 | * Copyright (C) 1993 Hamish Macdonald | |
10 | * Greg Harp | |
11 | * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk] | |
12 | * | |
13 | * with work by William Rucklidge (wjr@cs.cornell.edu) | |
14 | * Geert Uytterhoeven | |
15 | * Jes Sorensen (jds@kom.auc.dk) | |
16 | * Martin Apel | |
17 | * | |
18 | * and on the original Atari console driver (atacon.c): | |
19 | * | |
20 | * Copyright (C) 1993 Bjoern Brauel | |
21 | * Roman Hodek | |
22 | * | |
23 | * with work by Guenther Kelleter | |
24 | * Martin Schaller | |
25 | * Andreas Schwab | |
26 | * | |
27 | * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org) | |
28 | * Smart redraw scrolling, arbitrary font width support, 512char font support | |
29 | * and software scrollback added by | |
30 | * Jakub Jelinek (jj@ultra.linux.cz) | |
31 | * | |
32 | * Random hacking by Martin Mares <mj@ucw.cz> | |
33 | * | |
34 | * 2001 - Documented with DocBook | |
35 | * - Brad Douglas <brad@neruo.com> | |
36 | * | |
37 | * The low level operations for the various display memory organizations are | |
38 | * now in separate source files. | |
39 | * | |
40 | * Currently the following organizations are supported: | |
41 | * | |
42 | * o afb Amiga bitplanes | |
43 | * o cfb{2,4,8,16,24,32} Packed pixels | |
44 | * o ilbm Amiga interleaved bitplanes | |
45 | * o iplan2p[248] Atari interleaved bitplanes | |
46 | * o mfb Monochrome | |
47 | * o vga VGA characters/attributes | |
48 | * | |
49 | * To do: | |
50 | * | |
51 | * - Implement 16 plane mode (iplan2p16) | |
52 | * | |
53 | * | |
54 | * This file is subject to the terms and conditions of the GNU General Public | |
55 | * License. See the file COPYING in the main directory of this archive for | |
56 | * more details. | |
57 | */ | |
58 | ||
59 | #undef FBCONDEBUG | |
60 | ||
61 | #include <linux/config.h> | |
62 | #include <linux/module.h> | |
63 | #include <linux/types.h> | |
64 | #include <linux/sched.h> | |
65 | #include <linux/fs.h> | |
66 | #include <linux/kernel.h> | |
67 | #include <linux/delay.h> /* MSch: for IRQ probe */ | |
68 | #include <linux/tty.h> | |
69 | #include <linux/console.h> | |
70 | #include <linux/string.h> | |
71 | #include <linux/kd.h> | |
72 | #include <linux/slab.h> | |
73 | #include <linux/fb.h> | |
74 | #include <linux/vt_kern.h> | |
75 | #include <linux/selection.h> | |
76 | #include <linux/font.h> | |
77 | #include <linux/smp.h> | |
78 | #include <linux/init.h> | |
79 | #include <linux/interrupt.h> | |
80 | #include <linux/crc32.h> /* For counting font checksums */ | |
81 | #include <asm/irq.h> | |
82 | #include <asm/system.h> | |
83 | #include <asm/uaccess.h> | |
84 | #ifdef CONFIG_ATARI | |
85 | #include <asm/atariints.h> | |
86 | #endif | |
87 | #ifdef CONFIG_MAC | |
88 | #include <asm/macints.h> | |
89 | #endif | |
90 | #if defined(__mc68000__) || defined(CONFIG_APUS) | |
91 | #include <asm/machdep.h> | |
92 | #include <asm/setup.h> | |
93 | #endif | |
94 | ||
95 | #include "fbcon.h" | |
96 | ||
97 | #ifdef FBCONDEBUG | |
98 | # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args) | |
99 | #else | |
100 | # define DPRINTK(fmt, args...) | |
101 | #endif | |
102 | ||
103 | enum { | |
104 | FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */ | |
105 | FBCON_LOGO_DRAW = -2, /* draw the logo to a console */ | |
106 | FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */ | |
107 | }; | |
108 | ||
109 | struct display fb_display[MAX_NR_CONSOLES]; | |
110 | static signed char con2fb_map[MAX_NR_CONSOLES]; | |
111 | static signed char con2fb_map_boot[MAX_NR_CONSOLES]; | |
112 | static int logo_height; | |
113 | static int logo_lines; | |
114 | /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO | |
115 | enums. */ | |
116 | static int logo_shown = FBCON_LOGO_CANSHOW; | |
117 | /* Software scrollback */ | |
118 | static int fbcon_softback_size = 32768; | |
119 | static unsigned long softback_buf, softback_curr; | |
120 | static unsigned long softback_in; | |
121 | static unsigned long softback_top, softback_end; | |
122 | static int softback_lines; | |
123 | /* console mappings */ | |
124 | static int first_fb_vc; | |
125 | static int last_fb_vc = MAX_NR_CONSOLES - 1; | |
126 | static int fbcon_is_default = 1; | |
127 | /* font data */ | |
128 | static char fontname[40]; | |
129 | ||
130 | /* current fb_info */ | |
131 | static int info_idx = -1; | |
132 | ||
133 | static const struct consw fb_con; | |
134 | ||
135 | #define CM_SOFTBACK (8) | |
136 | ||
137 | #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) | |
138 | ||
139 | static void fbcon_free_font(struct display *); | |
140 | static int fbcon_set_origin(struct vc_data *); | |
141 | ||
142 | #define CURSOR_DRAW_DELAY (1) | |
143 | ||
144 | /* # VBL ints between cursor state changes */ | |
1da177e4 LT |
145 | #define ATARI_CURSOR_BLINK_RATE (42) |
146 | #define MAC_CURSOR_BLINK_RATE (32) | |
147 | #define DEFAULT_CURSOR_BLINK_RATE (20) | |
148 | ||
149 | static int vbl_cursor_cnt; | |
150 | ||
151 | #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) | |
152 | ||
153 | /* | |
154 | * Interface used by the world | |
155 | */ | |
156 | ||
157 | static const char *fbcon_startup(void); | |
158 | static void fbcon_init(struct vc_data *vc, int init); | |
159 | static void fbcon_deinit(struct vc_data *vc); | |
160 | static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, | |
161 | int width); | |
162 | static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); | |
163 | static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, | |
164 | int count, int ypos, int xpos); | |
165 | static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); | |
166 | static void fbcon_cursor(struct vc_data *vc, int mode); | |
167 | static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir, | |
168 | int count); | |
169 | static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, | |
170 | int height, int width); | |
171 | static int fbcon_switch(struct vc_data *vc); | |
172 | static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); | |
173 | static int fbcon_set_palette(struct vc_data *vc, unsigned char *table); | |
174 | static int fbcon_scrolldelta(struct vc_data *vc, int lines); | |
175 | ||
176 | /* | |
177 | * Internal routines | |
178 | */ | |
179 | static __inline__ int real_y(struct display *p, int ypos); | |
180 | static __inline__ void ywrap_up(struct vc_data *vc, int count); | |
181 | static __inline__ void ywrap_down(struct vc_data *vc, int count); | |
182 | static __inline__ void ypan_up(struct vc_data *vc, int count); | |
183 | static __inline__ void ypan_down(struct vc_data *vc, int count); | |
184 | static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, | |
185 | int dy, int dx, int height, int width, u_int y_break); | |
186 | static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
187 | struct vc_data *vc); | |
188 | static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
189 | int unit); | |
190 | static void fbcon_redraw_move(struct vc_data *vc, struct display *p, | |
191 | int line, int count, int dy); | |
192 | ||
193 | #ifdef CONFIG_MAC | |
194 | /* | |
195 | * On the Macintoy, there may or may not be a working VBL int. We need to probe | |
196 | */ | |
197 | static int vbl_detected; | |
198 | ||
199 | static irqreturn_t fb_vbl_detect(int irq, void *dummy, struct pt_regs *fp) | |
200 | { | |
201 | vbl_detected++; | |
202 | return IRQ_HANDLED; | |
203 | } | |
204 | #endif | |
205 | ||
206 | static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) | |
207 | { | |
208 | struct fbcon_ops *ops = info->fbcon_par; | |
209 | ||
210 | return (info->state != FBINFO_STATE_RUNNING || | |
211 | vc->vc_mode != KD_TEXT || ops->graphics); | |
212 | } | |
213 | ||
214 | static inline int get_color(struct vc_data *vc, struct fb_info *info, | |
215 | u16 c, int is_fg) | |
216 | { | |
217 | int depth = fb_get_color_depth(&info->var); | |
218 | int color = 0; | |
219 | ||
220 | if (console_blanked) { | |
221 | unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; | |
222 | ||
223 | c = vc->vc_video_erase_char & charmask; | |
224 | } | |
225 | ||
226 | if (depth != 1) | |
227 | color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) | |
228 | : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); | |
229 | ||
230 | switch (depth) { | |
231 | case 1: | |
232 | { | |
233 | /* 0 or 1 */ | |
234 | int fg = (info->fix.visual != FB_VISUAL_MONO01) ? 1 : 0; | |
235 | int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : 1; | |
236 | ||
237 | if (console_blanked) | |
238 | fg = bg; | |
239 | ||
240 | color = (is_fg) ? fg : bg; | |
241 | break; | |
242 | } | |
243 | case 2: | |
244 | /* | |
245 | * Scale down 16-colors to 4 colors. Default 4-color palette | |
246 | * is grayscale. | |
247 | */ | |
248 | color /= 4; | |
249 | break; | |
250 | case 3: | |
251 | /* | |
252 | * Last 8 entries of default 16-color palette is a more intense | |
253 | * version of the first 8 (i.e., same chrominance, different | |
254 | * luminance). | |
255 | */ | |
256 | color &= 7; | |
257 | break; | |
258 | } | |
259 | ||
260 | ||
261 | return color; | |
262 | } | |
263 | ||
264 | static void fb_flashcursor(void *private) | |
265 | { | |
266 | struct fb_info *info = private; | |
267 | struct fbcon_ops *ops = info->fbcon_par; | |
268 | struct display *p; | |
269 | struct vc_data *vc = NULL; | |
270 | int c; | |
271 | int mode; | |
272 | ||
273 | if (ops->currcon != -1) | |
274 | vc = vc_cons[ops->currcon].d; | |
275 | ||
276 | if (!vc || !CON_IS_VISIBLE(vc) || | |
277 | fbcon_is_inactive(vc, info) || | |
278 | registered_fb[con2fb_map[vc->vc_num]] != info) | |
279 | return; | |
280 | acquire_console_sem(); | |
281 | p = &fb_display[vc->vc_num]; | |
282 | c = scr_readw((u16 *) vc->vc_pos); | |
283 | mode = (!ops->cursor_flash || ops->cursor_state.enable) ? | |
284 | CM_ERASE : CM_DRAW; | |
285 | ops->cursor(vc, info, p, mode, softback_lines, get_color(vc, info, c, 1), | |
286 | get_color(vc, info, c, 0)); | |
287 | release_console_sem(); | |
288 | } | |
289 | ||
41359dca | 290 | #if defined(CONFIG_ATARI) || defined(CONFIG_MAC) |
1da177e4 LT |
291 | static int cursor_blink_rate; |
292 | static irqreturn_t fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp) | |
293 | { | |
294 | struct fb_info *info = dev_id; | |
295 | ||
296 | if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) { | |
297 | schedule_work(&info->queue); | |
298 | vbl_cursor_cnt = cursor_blink_rate; | |
299 | } | |
300 | return IRQ_HANDLED; | |
301 | } | |
302 | #endif | |
303 | ||
304 | static void cursor_timer_handler(unsigned long dev_addr) | |
305 | { | |
306 | struct fb_info *info = (struct fb_info *) dev_addr; | |
307 | struct fbcon_ops *ops = info->fbcon_par; | |
308 | ||
309 | schedule_work(&info->queue); | |
310 | mod_timer(&ops->cursor_timer, jiffies + HZ/5); | |
311 | } | |
312 | ||
313 | #ifndef MODULE | |
314 | static int __init fb_console_setup(char *this_opt) | |
315 | { | |
316 | char *options; | |
317 | int i, j; | |
318 | ||
319 | if (!this_opt || !*this_opt) | |
320 | return 0; | |
321 | ||
322 | while ((options = strsep(&this_opt, ",")) != NULL) { | |
323 | if (!strncmp(options, "font:", 5)) | |
324 | strcpy(fontname, options + 5); | |
325 | ||
326 | if (!strncmp(options, "scrollback:", 11)) { | |
327 | options += 11; | |
328 | if (*options) { | |
329 | fbcon_softback_size = simple_strtoul(options, &options, 0); | |
330 | if (*options == 'k' || *options == 'K') { | |
331 | fbcon_softback_size *= 1024; | |
332 | options++; | |
333 | } | |
334 | if (*options != ',') | |
335 | return 0; | |
336 | options++; | |
337 | } else | |
338 | return 0; | |
339 | } | |
340 | ||
341 | if (!strncmp(options, "map:", 4)) { | |
342 | options += 4; | |
343 | if (*options) | |
344 | for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { | |
345 | if (!options[j]) | |
346 | j = 0; | |
347 | con2fb_map_boot[i] = | |
348 | (options[j++]-'0') % FB_MAX; | |
349 | } | |
350 | return 0; | |
351 | } | |
352 | ||
353 | if (!strncmp(options, "vc:", 3)) { | |
354 | options += 3; | |
355 | if (*options) | |
356 | first_fb_vc = simple_strtoul(options, &options, 10) - 1; | |
357 | if (first_fb_vc < 0) | |
358 | first_fb_vc = 0; | |
359 | if (*options++ == '-') | |
360 | last_fb_vc = simple_strtoul(options, &options, 10) - 1; | |
361 | fbcon_is_default = 0; | |
362 | } | |
363 | } | |
364 | return 0; | |
365 | } | |
366 | ||
367 | __setup("fbcon=", fb_console_setup); | |
368 | #endif | |
369 | ||
370 | static int search_fb_in_map(int idx) | |
371 | { | |
372 | int i, retval = 0; | |
373 | ||
374 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
375 | if (con2fb_map[i] == idx) | |
376 | retval = 1; | |
377 | } | |
378 | return retval; | |
379 | } | |
380 | ||
381 | static int search_for_mapped_con(void) | |
382 | { | |
383 | int i, retval = 0; | |
384 | ||
385 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
386 | if (con2fb_map[i] != -1) | |
387 | retval = 1; | |
388 | } | |
389 | return retval; | |
390 | } | |
391 | ||
392 | static int fbcon_takeover(int show_logo) | |
393 | { | |
394 | int err, i; | |
395 | ||
396 | if (!num_registered_fb) | |
397 | return -ENODEV; | |
398 | ||
399 | if (!show_logo) | |
400 | logo_shown = FBCON_LOGO_DONTSHOW; | |
401 | ||
402 | for (i = first_fb_vc; i <= last_fb_vc; i++) | |
403 | con2fb_map[i] = info_idx; | |
404 | ||
405 | err = take_over_console(&fb_con, first_fb_vc, last_fb_vc, | |
406 | fbcon_is_default); | |
407 | if (err) { | |
408 | for (i = first_fb_vc; i <= last_fb_vc; i++) { | |
409 | con2fb_map[i] = -1; | |
410 | } | |
411 | info_idx = -1; | |
412 | } | |
413 | ||
414 | return err; | |
415 | } | |
416 | ||
417 | static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, | |
418 | int cols, int rows, int new_cols, int new_rows) | |
419 | { | |
420 | /* Need to make room for the logo */ | |
421 | int cnt, erase = vc->vc_video_erase_char, step; | |
422 | unsigned short *save = NULL, *r, *q; | |
423 | ||
424 | /* | |
425 | * remove underline attribute from erase character | |
426 | * if black and white framebuffer. | |
427 | */ | |
428 | if (fb_get_color_depth(&info->var) == 1) | |
429 | erase &= ~0x400; | |
430 | logo_height = fb_prepare_logo(info); | |
431 | logo_lines = (logo_height + vc->vc_font.height - 1) / | |
432 | vc->vc_font.height; | |
433 | q = (unsigned short *) (vc->vc_origin + | |
434 | vc->vc_size_row * rows); | |
435 | step = logo_lines * cols; | |
436 | for (r = q - logo_lines * cols; r < q; r++) | |
437 | if (scr_readw(r) != vc->vc_video_erase_char) | |
438 | break; | |
439 | if (r != q && new_rows >= rows + logo_lines) { | |
440 | save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL); | |
441 | if (save) { | |
442 | int i = cols < new_cols ? cols : new_cols; | |
443 | scr_memsetw(save, erase, logo_lines * new_cols * 2); | |
444 | r = q - step; | |
445 | for (cnt = 0; cnt < logo_lines; cnt++, r += i) | |
446 | scr_memcpyw(save + cnt * new_cols, r, 2 * i); | |
447 | r = q; | |
448 | } | |
449 | } | |
450 | if (r == q) { | |
451 | /* We can scroll screen down */ | |
452 | r = q - step - cols; | |
453 | for (cnt = rows - logo_lines; cnt > 0; cnt--) { | |
454 | scr_memcpyw(r + step, r, vc->vc_size_row); | |
455 | r -= cols; | |
456 | } | |
457 | if (!save) { | |
458 | vc->vc_y += logo_lines; | |
459 | vc->vc_pos += logo_lines * vc->vc_size_row; | |
460 | } | |
461 | } | |
462 | scr_memsetw((unsigned short *) vc->vc_origin, | |
463 | erase, | |
464 | vc->vc_size_row * logo_lines); | |
465 | ||
466 | if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) { | |
467 | fbcon_clear_margins(vc, 0); | |
468 | update_screen(vc); | |
469 | } | |
470 | ||
471 | if (save) { | |
472 | q = (unsigned short *) (vc->vc_origin + | |
473 | vc->vc_size_row * | |
474 | rows); | |
475 | scr_memcpyw(q, save, logo_lines * new_cols * 2); | |
476 | vc->vc_y += logo_lines; | |
477 | vc->vc_pos += logo_lines * vc->vc_size_row; | |
478 | kfree(save); | |
479 | } | |
480 | ||
481 | if (logo_lines > vc->vc_bottom) { | |
482 | logo_shown = FBCON_LOGO_CANSHOW; | |
483 | printk(KERN_INFO | |
484 | "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); | |
485 | } else if (logo_shown != FBCON_LOGO_DONTSHOW) { | |
486 | logo_shown = FBCON_LOGO_DRAW; | |
487 | vc->vc_top = logo_lines; | |
488 | } | |
489 | } | |
490 | ||
491 | #ifdef CONFIG_FB_TILEBLITTING | |
492 | static void set_blitting_type(struct vc_data *vc, struct fb_info *info, | |
493 | struct display *p) | |
494 | { | |
495 | struct fbcon_ops *ops = info->fbcon_par; | |
496 | ||
497 | if ((info->flags & FBINFO_MISC_TILEBLITTING)) | |
498 | fbcon_set_tileops(vc, info, p, ops); | |
499 | else | |
500 | fbcon_set_bitops(ops); | |
501 | } | |
502 | #else | |
503 | static void set_blitting_type(struct vc_data *vc, struct fb_info *info, | |
504 | struct display *p) | |
505 | { | |
506 | struct fbcon_ops *ops = info->fbcon_par; | |
507 | ||
508 | info->flags &= ~FBINFO_MISC_TILEBLITTING; | |
509 | fbcon_set_bitops(ops); | |
510 | } | |
511 | #endif /* CONFIG_MISC_TILEBLITTING */ | |
512 | ||
513 | ||
514 | static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, | |
515 | int unit, int oldidx) | |
516 | { | |
517 | struct fbcon_ops *ops = NULL; | |
518 | int err = 0; | |
519 | ||
520 | if (!try_module_get(info->fbops->owner)) | |
521 | err = -ENODEV; | |
522 | ||
523 | if (!err && info->fbops->fb_open && | |
524 | info->fbops->fb_open(info, 0)) | |
525 | err = -ENODEV; | |
526 | ||
527 | if (!err) { | |
528 | ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL); | |
529 | if (!ops) | |
530 | err = -ENOMEM; | |
531 | } | |
532 | ||
533 | if (!err) { | |
534 | memset(ops, 0, sizeof(struct fbcon_ops)); | |
535 | info->fbcon_par = ops; | |
536 | set_blitting_type(vc, info, NULL); | |
537 | } | |
538 | ||
539 | if (err) { | |
540 | con2fb_map[unit] = oldidx; | |
541 | module_put(info->fbops->owner); | |
542 | } | |
543 | ||
544 | return err; | |
545 | } | |
546 | ||
547 | static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, | |
548 | struct fb_info *newinfo, int unit, | |
549 | int oldidx, int found) | |
550 | { | |
551 | struct fbcon_ops *ops = oldinfo->fbcon_par; | |
552 | int err = 0; | |
553 | ||
554 | if (oldinfo->fbops->fb_release && | |
555 | oldinfo->fbops->fb_release(oldinfo, 0)) { | |
556 | con2fb_map[unit] = oldidx; | |
557 | if (!found && newinfo->fbops->fb_release) | |
558 | newinfo->fbops->fb_release(newinfo, 0); | |
559 | if (!found) | |
560 | module_put(newinfo->fbops->owner); | |
561 | err = -ENODEV; | |
562 | } | |
563 | ||
564 | if (!err) { | |
565 | if (oldinfo->queue.func == fb_flashcursor) | |
566 | del_timer_sync(&ops->cursor_timer); | |
567 | ||
568 | kfree(ops->cursor_state.mask); | |
569 | kfree(ops->cursor_data); | |
570 | kfree(oldinfo->fbcon_par); | |
571 | oldinfo->fbcon_par = NULL; | |
572 | module_put(oldinfo->fbops->owner); | |
573 | } | |
574 | ||
575 | return err; | |
576 | } | |
577 | ||
578 | static void con2fb_init_newinfo(struct fb_info *info) | |
579 | { | |
580 | if (!info->queue.func || info->queue.func == fb_flashcursor) { | |
581 | struct fbcon_ops *ops = info->fbcon_par; | |
582 | ||
583 | if (!info->queue.func) | |
584 | INIT_WORK(&info->queue, fb_flashcursor, info); | |
585 | ||
586 | init_timer(&ops->cursor_timer); | |
587 | ops->cursor_timer.function = cursor_timer_handler; | |
588 | ops->cursor_timer.expires = jiffies + HZ / 5; | |
589 | ops->cursor_timer.data = (unsigned long ) info; | |
590 | add_timer(&ops->cursor_timer); | |
591 | } | |
592 | } | |
593 | ||
594 | static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, | |
595 | int unit, int show_logo) | |
596 | { | |
597 | struct fbcon_ops *ops = info->fbcon_par; | |
598 | ||
599 | ops->currcon = fg_console; | |
600 | ||
601 | if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) | |
602 | info->fbops->fb_set_par(info); | |
603 | ||
604 | ops->flags |= FBCON_FLAGS_INIT; | |
605 | ops->graphics = 0; | |
606 | ||
607 | if (vc) | |
608 | fbcon_set_disp(info, &info->var, vc); | |
609 | else | |
610 | fbcon_preset_disp(info, &info->var, unit); | |
611 | ||
612 | if (show_logo) { | |
613 | struct vc_data *fg_vc = vc_cons[fg_console].d; | |
614 | struct fb_info *fg_info = | |
615 | registered_fb[con2fb_map[fg_console]]; | |
616 | ||
617 | fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, | |
618 | fg_vc->vc_rows, fg_vc->vc_cols, | |
619 | fg_vc->vc_rows); | |
620 | } | |
621 | ||
622 | update_screen(vc_cons[fg_console].d); | |
623 | } | |
624 | ||
625 | /** | |
626 | * set_con2fb_map - map console to frame buffer device | |
627 | * @unit: virtual console number to map | |
628 | * @newidx: frame buffer index to map virtual console to | |
629 | * @user: user request | |
630 | * | |
631 | * Maps a virtual console @unit to a frame buffer device | |
632 | * @newidx. | |
633 | */ | |
634 | static int set_con2fb_map(int unit, int newidx, int user) | |
635 | { | |
636 | struct vc_data *vc = vc_cons[unit].d; | |
637 | int oldidx = con2fb_map[unit]; | |
638 | struct fb_info *info = registered_fb[newidx]; | |
639 | struct fb_info *oldinfo = NULL; | |
640 | int found, err = 0; | |
641 | ||
642 | if (oldidx == newidx) | |
643 | return 0; | |
644 | ||
645 | if (!info) | |
646 | err = -EINVAL; | |
647 | ||
648 | if (!err && !search_for_mapped_con()) { | |
649 | info_idx = newidx; | |
650 | return fbcon_takeover(0); | |
651 | } | |
652 | ||
653 | if (oldidx != -1) | |
654 | oldinfo = registered_fb[oldidx]; | |
655 | ||
656 | found = search_fb_in_map(newidx); | |
657 | ||
658 | acquire_console_sem(); | |
659 | con2fb_map[unit] = newidx; | |
660 | if (!err && !found) | |
661 | err = con2fb_acquire_newinfo(vc, info, unit, oldidx); | |
662 | ||
663 | ||
664 | /* | |
665 | * If old fb is not mapped to any of the consoles, | |
666 | * fbcon should release it. | |
667 | */ | |
668 | if (!err && oldinfo && !search_fb_in_map(oldidx)) | |
669 | err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, | |
670 | found); | |
671 | ||
672 | if (!err) { | |
673 | int show_logo = (fg_console == 0 && !user && | |
674 | logo_shown != FBCON_LOGO_DONTSHOW); | |
675 | ||
676 | if (!found) | |
677 | con2fb_init_newinfo(info); | |
678 | con2fb_map_boot[unit] = newidx; | |
679 | con2fb_init_display(vc, info, unit, show_logo); | |
680 | } | |
681 | ||
682 | release_console_sem(); | |
683 | return err; | |
684 | } | |
685 | ||
686 | /* | |
687 | * Low Level Operations | |
688 | */ | |
689 | /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */ | |
690 | static int var_to_display(struct display *disp, | |
691 | struct fb_var_screeninfo *var, | |
692 | struct fb_info *info) | |
693 | { | |
694 | disp->xres_virtual = var->xres_virtual; | |
695 | disp->yres_virtual = var->yres_virtual; | |
696 | disp->bits_per_pixel = var->bits_per_pixel; | |
697 | disp->grayscale = var->grayscale; | |
698 | disp->nonstd = var->nonstd; | |
699 | disp->accel_flags = var->accel_flags; | |
700 | disp->height = var->height; | |
701 | disp->width = var->width; | |
702 | disp->red = var->red; | |
703 | disp->green = var->green; | |
704 | disp->blue = var->blue; | |
705 | disp->transp = var->transp; | |
706 | disp->rotate = var->rotate; | |
707 | disp->mode = fb_match_mode(var, &info->modelist); | |
708 | if (disp->mode == NULL) | |
709 | /* This should not happen */ | |
710 | return -EINVAL; | |
711 | return 0; | |
712 | } | |
713 | ||
714 | static void display_to_var(struct fb_var_screeninfo *var, | |
715 | struct display *disp) | |
716 | { | |
717 | fb_videomode_to_var(var, disp->mode); | |
718 | var->xres_virtual = disp->xres_virtual; | |
719 | var->yres_virtual = disp->yres_virtual; | |
720 | var->bits_per_pixel = disp->bits_per_pixel; | |
721 | var->grayscale = disp->grayscale; | |
722 | var->nonstd = disp->nonstd; | |
723 | var->accel_flags = disp->accel_flags; | |
724 | var->height = disp->height; | |
725 | var->width = disp->width; | |
726 | var->red = disp->red; | |
727 | var->green = disp->green; | |
728 | var->blue = disp->blue; | |
729 | var->transp = disp->transp; | |
730 | var->rotate = disp->rotate; | |
731 | } | |
732 | ||
733 | static const char *fbcon_startup(void) | |
734 | { | |
735 | const char *display_desc = "frame buffer device"; | |
736 | struct display *p = &fb_display[fg_console]; | |
737 | struct vc_data *vc = vc_cons[fg_console].d; | |
738 | struct font_desc *font = NULL; | |
739 | struct module *owner; | |
740 | struct fb_info *info = NULL; | |
741 | struct fbcon_ops *ops; | |
742 | int rows, cols; | |
743 | int irqres; | |
744 | ||
745 | irqres = 1; | |
746 | /* | |
747 | * If num_registered_fb is zero, this is a call for the dummy part. | |
748 | * The frame buffer devices weren't initialized yet. | |
749 | */ | |
750 | if (!num_registered_fb || info_idx == -1) | |
751 | return display_desc; | |
752 | /* | |
753 | * Instead of blindly using registered_fb[0], we use info_idx, set by | |
754 | * fb_console_init(); | |
755 | */ | |
756 | info = registered_fb[info_idx]; | |
757 | if (!info) | |
758 | return NULL; | |
759 | ||
760 | owner = info->fbops->owner; | |
761 | if (!try_module_get(owner)) | |
762 | return NULL; | |
763 | if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { | |
764 | module_put(owner); | |
765 | return NULL; | |
766 | } | |
767 | ||
768 | ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL); | |
769 | if (!ops) { | |
770 | module_put(owner); | |
771 | return NULL; | |
772 | } | |
773 | ||
774 | memset(ops, 0, sizeof(struct fbcon_ops)); | |
775 | ops->currcon = -1; | |
776 | ops->graphics = 1; | |
777 | info->fbcon_par = ops; | |
778 | set_blitting_type(vc, info, NULL); | |
779 | ||
780 | if (info->fix.type != FB_TYPE_TEXT) { | |
781 | if (fbcon_softback_size) { | |
782 | if (!softback_buf) { | |
783 | softback_buf = | |
784 | (unsigned long) | |
785 | kmalloc(fbcon_softback_size, | |
786 | GFP_KERNEL); | |
787 | if (!softback_buf) { | |
788 | fbcon_softback_size = 0; | |
789 | softback_top = 0; | |
790 | } | |
791 | } | |
792 | } else { | |
793 | if (softback_buf) { | |
794 | kfree((void *) softback_buf); | |
795 | softback_buf = 0; | |
796 | softback_top = 0; | |
797 | } | |
798 | } | |
799 | if (softback_buf) | |
800 | softback_in = softback_top = softback_curr = | |
801 | softback_buf; | |
802 | softback_lines = 0; | |
803 | } | |
804 | ||
805 | /* Setup default font */ | |
806 | if (!p->fontdata) { | |
807 | if (!fontname[0] || !(font = find_font(fontname))) | |
808 | font = get_default_font(info->var.xres, | |
809 | info->var.yres); | |
810 | vc->vc_font.width = font->width; | |
811 | vc->vc_font.height = font->height; | |
812 | vc->vc_font.data = p->fontdata = font->data; | |
813 | vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ | |
814 | } | |
815 | ||
816 | cols = info->var.xres / vc->vc_font.width; | |
817 | rows = info->var.yres / vc->vc_font.height; | |
818 | vc_resize(vc, cols, rows); | |
819 | ||
820 | DPRINTK("mode: %s\n", info->fix.id); | |
821 | DPRINTK("visual: %d\n", info->fix.visual); | |
822 | DPRINTK("res: %dx%d-%d\n", info->var.xres, | |
823 | info->var.yres, | |
824 | info->var.bits_per_pixel); | |
825 | ||
826 | #ifdef CONFIG_ATARI | |
827 | if (MACH_IS_ATARI) { | |
828 | cursor_blink_rate = ATARI_CURSOR_BLINK_RATE; | |
829 | irqres = | |
830 | request_irq(IRQ_AUTO_4, fb_vbl_handler, | |
831 | IRQ_TYPE_PRIO, "framebuffer vbl", | |
832 | info); | |
833 | } | |
834 | #endif /* CONFIG_ATARI */ | |
835 | ||
836 | #ifdef CONFIG_MAC | |
837 | /* | |
838 | * On a Macintoy, the VBL interrupt may or may not be active. | |
839 | * As interrupt based cursor is more reliable and race free, we | |
840 | * probe for VBL interrupts. | |
841 | */ | |
842 | if (MACH_IS_MAC) { | |
843 | int ct = 0; | |
844 | /* | |
845 | * Probe for VBL: set temp. handler ... | |
846 | */ | |
847 | irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0, | |
848 | "framebuffer vbl", info); | |
849 | vbl_detected = 0; | |
850 | ||
851 | /* | |
852 | * ... and spin for 20 ms ... | |
853 | */ | |
854 | while (!vbl_detected && ++ct < 1000) | |
855 | udelay(20); | |
856 | ||
857 | if (ct == 1000) | |
858 | printk | |
859 | ("fbcon_startup: No VBL detected, using timer based cursor.\n"); | |
860 | ||
861 | free_irq(IRQ_MAC_VBL, fb_vbl_detect); | |
862 | ||
863 | if (vbl_detected) { | |
864 | /* | |
865 | * interrupt based cursor ok | |
866 | */ | |
867 | cursor_blink_rate = MAC_CURSOR_BLINK_RATE; | |
868 | irqres = | |
869 | request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0, | |
870 | "framebuffer vbl", info); | |
871 | } else { | |
872 | /* | |
873 | * VBL not detected: fall through, use timer based cursor | |
874 | */ | |
875 | irqres = 1; | |
876 | } | |
877 | } | |
878 | #endif /* CONFIG_MAC */ | |
879 | ||
1da177e4 LT |
880 | /* Initialize the work queue. If the driver provides its |
881 | * own work queue this means it will use something besides | |
882 | * default timer to flash the cursor. */ | |
883 | if (!info->queue.func) { | |
884 | INIT_WORK(&info->queue, fb_flashcursor, info); | |
885 | ||
886 | init_timer(&ops->cursor_timer); | |
887 | ops->cursor_timer.function = cursor_timer_handler; | |
888 | ops->cursor_timer.expires = jiffies + HZ / 5; | |
889 | ops->cursor_timer.data = (unsigned long ) info; | |
890 | add_timer(&ops->cursor_timer); | |
891 | } | |
892 | return display_desc; | |
893 | } | |
894 | ||
895 | static void fbcon_init(struct vc_data *vc, int init) | |
896 | { | |
897 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
898 | struct fbcon_ops *ops; | |
899 | struct vc_data **default_mode = vc->vc_display_fg; | |
900 | struct vc_data *svc = *default_mode; | |
901 | struct display *t, *p = &fb_display[vc->vc_num]; | |
902 | int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; | |
306958e8 | 903 | int cap; |
1da177e4 LT |
904 | |
905 | if (info_idx == -1 || info == NULL) | |
906 | return; | |
306958e8 AB |
907 | |
908 | cap = info->flags; | |
909 | ||
1da177e4 LT |
910 | if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || |
911 | (info->fix.type == FB_TYPE_TEXT)) | |
912 | logo = 0; | |
913 | ||
914 | info->var.xoffset = info->var.yoffset = p->yscroll = 0; /* reset wrap/pan */ | |
915 | ||
916 | if (var_to_display(p, &info->var, info)) | |
917 | return; | |
918 | ||
919 | /* If we are not the first console on this | |
920 | fb, copy the font from that console */ | |
921 | t = &fb_display[svc->vc_num]; | |
922 | if (!vc->vc_font.data) { | |
923 | vc->vc_font.data = p->fontdata = t->fontdata; | |
924 | vc->vc_font.width = (*default_mode)->vc_font.width; | |
925 | vc->vc_font.height = (*default_mode)->vc_font.height; | |
926 | p->userfont = t->userfont; | |
927 | if (p->userfont) | |
928 | REFCOUNT(p->fontdata)++; | |
929 | } | |
930 | if (p->userfont) | |
931 | charcnt = FNTCHARCNT(p->fontdata); | |
932 | vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1); | |
933 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; | |
934 | if (charcnt == 256) { | |
935 | vc->vc_hi_font_mask = 0; | |
936 | } else { | |
937 | vc->vc_hi_font_mask = 0x100; | |
938 | if (vc->vc_can_do_color) | |
939 | vc->vc_complement_mask <<= 1; | |
940 | } | |
941 | ||
942 | if (!*svc->vc_uni_pagedir_loc) | |
943 | con_set_default_unimap(svc); | |
944 | if (!*vc->vc_uni_pagedir_loc) | |
945 | con_copy_unimap(vc, svc); | |
946 | ||
947 | cols = vc->vc_cols; | |
948 | rows = vc->vc_rows; | |
949 | new_cols = info->var.xres / vc->vc_font.width; | |
950 | new_rows = info->var.yres / vc->vc_font.height; | |
951 | vc_resize(vc, new_cols, new_rows); | |
952 | ||
953 | ops = info->fbcon_par; | |
954 | /* | |
955 | * We must always set the mode. The mode of the previous console | |
956 | * driver could be in the same resolution but we are using different | |
957 | * hardware so we have to initialize the hardware. | |
958 | * | |
959 | * We need to do it in fbcon_init() to prevent screen corruption. | |
960 | */ | |
961 | if (CON_IS_VISIBLE(vc)) { | |
962 | if (info->fbops->fb_set_par && | |
963 | !(ops->flags & FBCON_FLAGS_INIT)) | |
964 | info->fbops->fb_set_par(info); | |
965 | ops->flags |= FBCON_FLAGS_INIT; | |
966 | } | |
967 | ||
968 | ops->graphics = 0; | |
969 | ||
970 | if ((cap & FBINFO_HWACCEL_COPYAREA) && | |
971 | !(cap & FBINFO_HWACCEL_DISABLED)) | |
972 | p->scrollmode = SCROLL_MOVE; | |
973 | else /* default to something safe */ | |
974 | p->scrollmode = SCROLL_REDRAW; | |
975 | ||
976 | /* | |
977 | * ++guenther: console.c:vc_allocate() relies on initializing | |
978 | * vc_{cols,rows}, but we must not set those if we are only | |
979 | * resizing the console. | |
980 | */ | |
981 | if (!init) { | |
982 | vc->vc_cols = new_cols; | |
983 | vc->vc_rows = new_rows; | |
984 | } | |
985 | ||
986 | if (logo) | |
987 | fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); | |
988 | ||
989 | if (vc == svc && softback_buf) { | |
990 | int l = fbcon_softback_size / vc->vc_size_row; | |
991 | if (l > 5) | |
992 | softback_end = softback_buf + l * vc->vc_size_row; | |
993 | else { | |
994 | /* Smaller scrollback makes no sense, and 0 would screw | |
995 | the operation totally */ | |
996 | softback_top = 0; | |
997 | } | |
998 | } | |
999 | } | |
1000 | ||
1001 | static void fbcon_deinit(struct vc_data *vc) | |
1002 | { | |
1003 | struct display *p = &fb_display[vc->vc_num]; | |
1004 | ||
1005 | if (info_idx != -1) | |
1006 | return; | |
1007 | fbcon_free_font(p); | |
1008 | } | |
1009 | ||
1010 | /* ====================================================================== */ | |
1011 | ||
1012 | /* fbcon_XXX routines - interface used by the world | |
1013 | * | |
1014 | * This system is now divided into two levels because of complications | |
1015 | * caused by hardware scrolling. Top level functions: | |
1016 | * | |
1017 | * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() | |
1018 | * | |
1019 | * handles y values in range [0, scr_height-1] that correspond to real | |
1020 | * screen positions. y_wrap shift means that first line of bitmap may be | |
1021 | * anywhere on this display. These functions convert lineoffsets to | |
1022 | * bitmap offsets and deal with the wrap-around case by splitting blits. | |
1023 | * | |
1024 | * fbcon_bmove_physical_8() -- These functions fast implementations | |
1025 | * fbcon_clear_physical_8() -- of original fbcon_XXX fns. | |
1026 | * fbcon_putc_physical_8() -- (font width != 8) may be added later | |
1027 | * | |
1028 | * WARNING: | |
1029 | * | |
1030 | * At the moment fbcon_putc() cannot blit across vertical wrap boundary | |
1031 | * Implies should only really hardware scroll in rows. Only reason for | |
1032 | * restriction is simplicity & efficiency at the moment. | |
1033 | */ | |
1034 | ||
1035 | static __inline__ int real_y(struct display *p, int ypos) | |
1036 | { | |
1037 | int rows = p->vrows; | |
1038 | ||
1039 | ypos += p->yscroll; | |
1040 | return ypos < rows ? ypos : ypos - rows; | |
1041 | } | |
1042 | ||
1043 | ||
1044 | static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, | |
1045 | int width) | |
1046 | { | |
1047 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1048 | struct fbcon_ops *ops = info->fbcon_par; | |
1049 | ||
1050 | struct display *p = &fb_display[vc->vc_num]; | |
1051 | u_int y_break; | |
1052 | ||
1053 | if (fbcon_is_inactive(vc, info)) | |
1054 | return; | |
1055 | ||
1056 | if (!height || !width) | |
1057 | return; | |
1058 | ||
1059 | /* Split blits that cross physical y_wrap boundary */ | |
1060 | ||
1061 | y_break = p->vrows - p->yscroll; | |
1062 | if (sy < y_break && sy + height - 1 >= y_break) { | |
1063 | u_int b = y_break - sy; | |
1064 | ops->clear(vc, info, real_y(p, sy), sx, b, width); | |
1065 | ops->clear(vc, info, real_y(p, sy + b), sx, height - b, | |
1066 | width); | |
1067 | } else | |
1068 | ops->clear(vc, info, real_y(p, sy), sx, height, width); | |
1069 | } | |
1070 | ||
1071 | static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, | |
1072 | int count, int ypos, int xpos) | |
1073 | { | |
1074 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1075 | struct display *p = &fb_display[vc->vc_num]; | |
1076 | struct fbcon_ops *ops = info->fbcon_par; | |
1077 | ||
1078 | if (!fbcon_is_inactive(vc, info)) | |
1079 | ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, | |
1080 | get_color(vc, info, scr_readw(s), 1), | |
1081 | get_color(vc, info, scr_readw(s), 0)); | |
1082 | } | |
1083 | ||
1084 | static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) | |
1085 | { | |
1086 | unsigned short chr; | |
1087 | ||
1088 | scr_writew(c, &chr); | |
1089 | fbcon_putcs(vc, &chr, 1, ypos, xpos); | |
1090 | } | |
1091 | ||
1092 | static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) | |
1093 | { | |
1094 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1095 | struct fbcon_ops *ops = info->fbcon_par; | |
1096 | ||
1097 | if (!fbcon_is_inactive(vc, info)) | |
1098 | ops->clear_margins(vc, info, bottom_only); | |
1099 | } | |
1100 | ||
1101 | static void fbcon_cursor(struct vc_data *vc, int mode) | |
1102 | { | |
1103 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1104 | struct fbcon_ops *ops = info->fbcon_par; | |
1105 | struct display *p = &fb_display[vc->vc_num]; | |
1106 | int y; | |
1107 | int c = scr_readw((u16 *) vc->vc_pos); | |
1108 | ||
1109 | if (fbcon_is_inactive(vc, info)) | |
1110 | return; | |
1111 | ||
1112 | ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; | |
1113 | if (mode & CM_SOFTBACK) { | |
1114 | mode &= ~CM_SOFTBACK; | |
1115 | y = softback_lines; | |
1116 | } else { | |
1117 | if (softback_lines) | |
1118 | fbcon_set_origin(vc); | |
1119 | y = 0; | |
1120 | } | |
1121 | ||
1122 | ops->cursor(vc, info, p, mode, y, get_color(vc, info, c, 1), | |
1123 | get_color(vc, info, c, 0)); | |
1124 | vbl_cursor_cnt = CURSOR_DRAW_DELAY; | |
1125 | } | |
1126 | ||
1127 | static int scrollback_phys_max = 0; | |
1128 | static int scrollback_max = 0; | |
1129 | static int scrollback_current = 0; | |
1130 | ||
1131 | static int update_var(int con, struct fb_info *info) | |
1132 | { | |
1133 | if (con == ((struct fbcon_ops *)info->fbcon_par)->currcon) | |
1134 | return fb_pan_display(info, &info->var); | |
1135 | return 0; | |
1136 | } | |
1137 | ||
1138 | /* | |
1139 | * If no vc is existent yet, just set struct display | |
1140 | */ | |
1141 | static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
1142 | int unit) | |
1143 | { | |
1144 | struct display *p = &fb_display[unit]; | |
1145 | struct display *t = &fb_display[fg_console]; | |
1146 | ||
1147 | var->xoffset = var->yoffset = p->yscroll = 0; | |
1148 | if (var_to_display(p, var, info)) | |
1149 | return; | |
1150 | ||
1151 | p->fontdata = t->fontdata; | |
1152 | p->userfont = t->userfont; | |
1153 | if (p->userfont) | |
1154 | REFCOUNT(p->fontdata)++; | |
1155 | } | |
1156 | ||
1157 | static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
1158 | struct vc_data *vc) | |
1159 | { | |
1160 | struct display *p = &fb_display[vc->vc_num], *t; | |
1161 | struct vc_data **default_mode = vc->vc_display_fg; | |
1162 | struct vc_data *svc = *default_mode; | |
1163 | int rows, cols, charcnt = 256; | |
1164 | ||
1165 | var->xoffset = var->yoffset = p->yscroll = 0; | |
1166 | if (var_to_display(p, var, info)) | |
1167 | return; | |
1168 | t = &fb_display[svc->vc_num]; | |
1169 | if (!vc->vc_font.data) { | |
1170 | vc->vc_font.data = p->fontdata = t->fontdata; | |
1171 | vc->vc_font.width = (*default_mode)->vc_font.width; | |
1172 | vc->vc_font.height = (*default_mode)->vc_font.height; | |
1173 | p->userfont = t->userfont; | |
1174 | if (p->userfont) | |
1175 | REFCOUNT(p->fontdata)++; | |
1176 | } | |
1177 | if (p->userfont) | |
1178 | charcnt = FNTCHARCNT(p->fontdata); | |
1179 | ||
1180 | vc->vc_can_do_color = (fb_get_color_depth(var) != 1); | |
1181 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; | |
1182 | if (charcnt == 256) { | |
1183 | vc->vc_hi_font_mask = 0; | |
1184 | } else { | |
1185 | vc->vc_hi_font_mask = 0x100; | |
1186 | if (vc->vc_can_do_color) | |
1187 | vc->vc_complement_mask <<= 1; | |
1188 | } | |
1189 | ||
1190 | if (!*svc->vc_uni_pagedir_loc) | |
1191 | con_set_default_unimap(svc); | |
1192 | if (!*vc->vc_uni_pagedir_loc) | |
1193 | con_copy_unimap(vc, svc); | |
1194 | ||
1195 | cols = var->xres / vc->vc_font.width; | |
1196 | rows = var->yres / vc->vc_font.height; | |
1197 | vc_resize(vc, cols, rows); | |
1198 | if (CON_IS_VISIBLE(vc)) { | |
1199 | update_screen(vc); | |
1200 | if (softback_buf) { | |
1201 | int l = fbcon_softback_size / vc->vc_size_row; | |
1202 | ||
1203 | if (l > 5) | |
1204 | softback_end = softback_buf + l * | |
1205 | vc->vc_size_row; | |
1206 | else { | |
1207 | /* Smaller scrollback makes no sense, and 0 | |
1208 | would screw the operation totally */ | |
1209 | softback_top = 0; | |
1210 | } | |
1211 | } | |
1212 | } | |
1213 | } | |
1214 | ||
1215 | static __inline__ void ywrap_up(struct vc_data *vc, int count) | |
1216 | { | |
1217 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1218 | struct display *p = &fb_display[vc->vc_num]; | |
1219 | ||
1220 | p->yscroll += count; | |
1221 | if (p->yscroll >= p->vrows) /* Deal with wrap */ | |
1222 | p->yscroll -= p->vrows; | |
1223 | info->var.xoffset = 0; | |
1224 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1225 | info->var.vmode |= FB_VMODE_YWRAP; | |
1226 | update_var(vc->vc_num, info); | |
1227 | scrollback_max += count; | |
1228 | if (scrollback_max > scrollback_phys_max) | |
1229 | scrollback_max = scrollback_phys_max; | |
1230 | scrollback_current = 0; | |
1231 | } | |
1232 | ||
1233 | static __inline__ void ywrap_down(struct vc_data *vc, int count) | |
1234 | { | |
1235 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1236 | struct display *p = &fb_display[vc->vc_num]; | |
1237 | ||
1238 | p->yscroll -= count; | |
1239 | if (p->yscroll < 0) /* Deal with wrap */ | |
1240 | p->yscroll += p->vrows; | |
1241 | info->var.xoffset = 0; | |
1242 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1243 | info->var.vmode |= FB_VMODE_YWRAP; | |
1244 | update_var(vc->vc_num, info); | |
1245 | scrollback_max -= count; | |
1246 | if (scrollback_max < 0) | |
1247 | scrollback_max = 0; | |
1248 | scrollback_current = 0; | |
1249 | } | |
1250 | ||
1251 | static __inline__ void ypan_up(struct vc_data *vc, int count) | |
1252 | { | |
1253 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1254 | struct display *p = &fb_display[vc->vc_num]; | |
1255 | struct fbcon_ops *ops = info->fbcon_par; | |
1256 | ||
1257 | p->yscroll += count; | |
1258 | if (p->yscroll > p->vrows - vc->vc_rows) { | |
1259 | ops->bmove(vc, info, p->vrows - vc->vc_rows, | |
1260 | 0, 0, 0, vc->vc_rows, vc->vc_cols); | |
1261 | p->yscroll -= p->vrows - vc->vc_rows; | |
1262 | } | |
1263 | info->var.xoffset = 0; | |
1264 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1265 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
1266 | update_var(vc->vc_num, info); | |
1267 | fbcon_clear_margins(vc, 1); | |
1268 | scrollback_max += count; | |
1269 | if (scrollback_max > scrollback_phys_max) | |
1270 | scrollback_max = scrollback_phys_max; | |
1271 | scrollback_current = 0; | |
1272 | } | |
1273 | ||
1274 | static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) | |
1275 | { | |
1276 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1277 | struct display *p = &fb_display[vc->vc_num]; | |
1278 | int redraw = 0; | |
1279 | ||
1280 | p->yscroll += count; | |
1281 | if (p->yscroll > p->vrows - vc->vc_rows) { | |
1282 | p->yscroll -= p->vrows - vc->vc_rows; | |
1283 | redraw = 1; | |
1284 | } | |
1285 | ||
1286 | info->var.xoffset = 0; | |
1287 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1288 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
1289 | if (redraw) | |
1290 | fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); | |
1291 | update_var(vc->vc_num, info); | |
1292 | fbcon_clear_margins(vc, 1); | |
1293 | scrollback_max += count; | |
1294 | if (scrollback_max > scrollback_phys_max) | |
1295 | scrollback_max = scrollback_phys_max; | |
1296 | scrollback_current = 0; | |
1297 | } | |
1298 | ||
1299 | static __inline__ void ypan_down(struct vc_data *vc, int count) | |
1300 | { | |
1301 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1302 | struct display *p = &fb_display[vc->vc_num]; | |
1303 | struct fbcon_ops *ops = info->fbcon_par; | |
1304 | ||
1305 | p->yscroll -= count; | |
1306 | if (p->yscroll < 0) { | |
1307 | ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, | |
1308 | 0, vc->vc_rows, vc->vc_cols); | |
1309 | p->yscroll += p->vrows - vc->vc_rows; | |
1310 | } | |
1311 | info->var.xoffset = 0; | |
1312 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1313 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
1314 | update_var(vc->vc_num, info); | |
1315 | fbcon_clear_margins(vc, 1); | |
1316 | scrollback_max -= count; | |
1317 | if (scrollback_max < 0) | |
1318 | scrollback_max = 0; | |
1319 | scrollback_current = 0; | |
1320 | } | |
1321 | ||
1322 | static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) | |
1323 | { | |
1324 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1325 | struct display *p = &fb_display[vc->vc_num]; | |
1326 | int redraw = 0; | |
1327 | ||
1328 | p->yscroll -= count; | |
1329 | if (p->yscroll < 0) { | |
1330 | p->yscroll += p->vrows - vc->vc_rows; | |
1331 | redraw = 1; | |
1332 | } | |
1333 | info->var.xoffset = 0; | |
1334 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1335 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
1336 | if (redraw) | |
1337 | fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); | |
1338 | update_var(vc->vc_num, info); | |
1339 | fbcon_clear_margins(vc, 1); | |
1340 | scrollback_max -= count; | |
1341 | if (scrollback_max < 0) | |
1342 | scrollback_max = 0; | |
1343 | scrollback_current = 0; | |
1344 | } | |
1345 | ||
1346 | static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, | |
1347 | long delta) | |
1348 | { | |
1349 | int count = vc->vc_rows; | |
1350 | unsigned short *d, *s; | |
1351 | unsigned long n; | |
1352 | int line = 0; | |
1353 | ||
1354 | d = (u16 *) softback_curr; | |
1355 | if (d == (u16 *) softback_in) | |
1356 | d = (u16 *) vc->vc_origin; | |
1357 | n = softback_curr + delta * vc->vc_size_row; | |
1358 | softback_lines -= delta; | |
1359 | if (delta < 0) { | |
1360 | if (softback_curr < softback_top && n < softback_buf) { | |
1361 | n += softback_end - softback_buf; | |
1362 | if (n < softback_top) { | |
1363 | softback_lines -= | |
1364 | (softback_top - n) / vc->vc_size_row; | |
1365 | n = softback_top; | |
1366 | } | |
1367 | } else if (softback_curr >= softback_top | |
1368 | && n < softback_top) { | |
1369 | softback_lines -= | |
1370 | (softback_top - n) / vc->vc_size_row; | |
1371 | n = softback_top; | |
1372 | } | |
1373 | } else { | |
1374 | if (softback_curr > softback_in && n >= softback_end) { | |
1375 | n += softback_buf - softback_end; | |
1376 | if (n > softback_in) { | |
1377 | n = softback_in; | |
1378 | softback_lines = 0; | |
1379 | } | |
1380 | } else if (softback_curr <= softback_in && n > softback_in) { | |
1381 | n = softback_in; | |
1382 | softback_lines = 0; | |
1383 | } | |
1384 | } | |
1385 | if (n == softback_curr) | |
1386 | return; | |
1387 | softback_curr = n; | |
1388 | s = (u16 *) softback_curr; | |
1389 | if (s == (u16 *) softback_in) | |
1390 | s = (u16 *) vc->vc_origin; | |
1391 | while (count--) { | |
1392 | unsigned short *start; | |
1393 | unsigned short *le; | |
1394 | unsigned short c; | |
1395 | int x = 0; | |
1396 | unsigned short attr = 1; | |
1397 | ||
1398 | start = s; | |
1399 | le = advance_row(s, 1); | |
1400 | do { | |
1401 | c = scr_readw(s); | |
1402 | if (attr != (c & 0xff00)) { | |
1403 | attr = c & 0xff00; | |
1404 | if (s > start) { | |
1405 | fbcon_putcs(vc, start, s - start, | |
1406 | line, x); | |
1407 | x += s - start; | |
1408 | start = s; | |
1409 | } | |
1410 | } | |
1411 | if (c == scr_readw(d)) { | |
1412 | if (s > start) { | |
1413 | fbcon_putcs(vc, start, s - start, | |
1414 | line, x); | |
1415 | x += s - start + 1; | |
1416 | start = s + 1; | |
1417 | } else { | |
1418 | x++; | |
1419 | start++; | |
1420 | } | |
1421 | } | |
1422 | s++; | |
1423 | d++; | |
1424 | } while (s < le); | |
1425 | if (s > start) | |
1426 | fbcon_putcs(vc, start, s - start, line, x); | |
1427 | line++; | |
1428 | if (d == (u16 *) softback_end) | |
1429 | d = (u16 *) softback_buf; | |
1430 | if (d == (u16 *) softback_in) | |
1431 | d = (u16 *) vc->vc_origin; | |
1432 | if (s == (u16 *) softback_end) | |
1433 | s = (u16 *) softback_buf; | |
1434 | if (s == (u16 *) softback_in) | |
1435 | s = (u16 *) vc->vc_origin; | |
1436 | } | |
1437 | } | |
1438 | ||
1439 | static void fbcon_redraw_move(struct vc_data *vc, struct display *p, | |
1440 | int line, int count, int dy) | |
1441 | { | |
1442 | unsigned short *s = (unsigned short *) | |
1443 | (vc->vc_origin + vc->vc_size_row * line); | |
1444 | ||
1445 | while (count--) { | |
1446 | unsigned short *start = s; | |
1447 | unsigned short *le = advance_row(s, 1); | |
1448 | unsigned short c; | |
1449 | int x = 0; | |
1450 | unsigned short attr = 1; | |
1451 | ||
1452 | do { | |
1453 | c = scr_readw(s); | |
1454 | if (attr != (c & 0xff00)) { | |
1455 | attr = c & 0xff00; | |
1456 | if (s > start) { | |
1457 | fbcon_putcs(vc, start, s - start, | |
1458 | dy, x); | |
1459 | x += s - start; | |
1460 | start = s; | |
1461 | } | |
1462 | } | |
1463 | console_conditional_schedule(); | |
1464 | s++; | |
1465 | } while (s < le); | |
1466 | if (s > start) | |
1467 | fbcon_putcs(vc, start, s - start, dy, x); | |
1468 | console_conditional_schedule(); | |
1469 | dy++; | |
1470 | } | |
1471 | } | |
1472 | ||
1473 | static void fbcon_redraw(struct vc_data *vc, struct display *p, | |
1474 | int line, int count, int offset) | |
1475 | { | |
1476 | unsigned short *d = (unsigned short *) | |
1477 | (vc->vc_origin + vc->vc_size_row * line); | |
1478 | unsigned short *s = d + offset; | |
1479 | ||
1480 | while (count--) { | |
1481 | unsigned short *start = s; | |
1482 | unsigned short *le = advance_row(s, 1); | |
1483 | unsigned short c; | |
1484 | int x = 0; | |
1485 | unsigned short attr = 1; | |
1486 | ||
1487 | do { | |
1488 | c = scr_readw(s); | |
1489 | if (attr != (c & 0xff00)) { | |
1490 | attr = c & 0xff00; | |
1491 | if (s > start) { | |
1492 | fbcon_putcs(vc, start, s - start, | |
1493 | line, x); | |
1494 | x += s - start; | |
1495 | start = s; | |
1496 | } | |
1497 | } | |
1498 | if (c == scr_readw(d)) { | |
1499 | if (s > start) { | |
1500 | fbcon_putcs(vc, start, s - start, | |
1501 | line, x); | |
1502 | x += s - start + 1; | |
1503 | start = s + 1; | |
1504 | } else { | |
1505 | x++; | |
1506 | start++; | |
1507 | } | |
1508 | } | |
1509 | scr_writew(c, d); | |
1510 | console_conditional_schedule(); | |
1511 | s++; | |
1512 | d++; | |
1513 | } while (s < le); | |
1514 | if (s > start) | |
1515 | fbcon_putcs(vc, start, s - start, line, x); | |
1516 | console_conditional_schedule(); | |
1517 | if (offset > 0) | |
1518 | line++; | |
1519 | else { | |
1520 | line--; | |
1521 | /* NOTE: We subtract two lines from these pointers */ | |
1522 | s -= vc->vc_size_row; | |
1523 | d -= vc->vc_size_row; | |
1524 | } | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | static inline void fbcon_softback_note(struct vc_data *vc, int t, | |
1529 | int count) | |
1530 | { | |
1531 | unsigned short *p; | |
1532 | ||
1533 | if (vc->vc_num != fg_console) | |
1534 | return; | |
1535 | p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); | |
1536 | ||
1537 | while (count) { | |
1538 | scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); | |
1539 | count--; | |
1540 | p = advance_row(p, 1); | |
1541 | softback_in += vc->vc_size_row; | |
1542 | if (softback_in == softback_end) | |
1543 | softback_in = softback_buf; | |
1544 | if (softback_in == softback_top) { | |
1545 | softback_top += vc->vc_size_row; | |
1546 | if (softback_top == softback_end) | |
1547 | softback_top = softback_buf; | |
1548 | } | |
1549 | } | |
1550 | softback_curr = softback_in; | |
1551 | } | |
1552 | ||
1553 | static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir, | |
1554 | int count) | |
1555 | { | |
1556 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1557 | struct display *p = &fb_display[vc->vc_num]; | |
1558 | struct fbcon_ops *ops = info->fbcon_par; | |
1559 | int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; | |
1560 | ||
1561 | if (fbcon_is_inactive(vc, info)) | |
1562 | return -EINVAL; | |
1563 | ||
1564 | fbcon_cursor(vc, CM_ERASE); | |
1565 | ||
1566 | /* | |
1567 | * ++Geert: Only use ywrap/ypan if the console is in text mode | |
1568 | * ++Andrew: Only use ypan on hardware text mode when scrolling the | |
1569 | * whole screen (prevents flicker). | |
1570 | */ | |
1571 | ||
1572 | switch (dir) { | |
1573 | case SM_UP: | |
1574 | if (count > vc->vc_rows) /* Maximum realistic size */ | |
1575 | count = vc->vc_rows; | |
1576 | if (softback_top) | |
1577 | fbcon_softback_note(vc, t, count); | |
1578 | if (logo_shown >= 0) | |
1579 | goto redraw_up; | |
1580 | switch (p->scrollmode) { | |
1581 | case SCROLL_MOVE: | |
1582 | ops->bmove(vc, info, t + count, 0, t, 0, | |
1583 | b - t - count, vc->vc_cols); | |
1584 | ops->clear(vc, info, b - count, 0, count, | |
1585 | vc->vc_cols); | |
1586 | break; | |
1587 | ||
1588 | case SCROLL_WRAP_MOVE: | |
1589 | if (b - t - count > 3 * vc->vc_rows >> 2) { | |
1590 | if (t > 0) | |
1591 | fbcon_bmove(vc, 0, 0, count, 0, t, | |
1592 | vc->vc_cols); | |
1593 | ywrap_up(vc, count); | |
1594 | if (vc->vc_rows - b > 0) | |
1595 | fbcon_bmove(vc, b - count, 0, b, 0, | |
1596 | vc->vc_rows - b, | |
1597 | vc->vc_cols); | |
1598 | } else if (info->flags & FBINFO_READS_FAST) | |
1599 | fbcon_bmove(vc, t + count, 0, t, 0, | |
1600 | b - t - count, vc->vc_cols); | |
1601 | else | |
1602 | goto redraw_up; | |
1603 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1604 | break; | |
1605 | ||
1606 | case SCROLL_PAN_REDRAW: | |
1607 | if ((p->yscroll + count <= | |
1608 | 2 * (p->vrows - vc->vc_rows)) | |
1609 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1610 | || (scroll_partial | |
1611 | && (b - t - count > | |
1612 | 3 * vc->vc_rows >> 2)))) { | |
1613 | if (t > 0) | |
1614 | fbcon_redraw_move(vc, p, 0, t, count); | |
1615 | ypan_up_redraw(vc, t, count); | |
1616 | if (vc->vc_rows - b > 0) | |
1617 | fbcon_redraw_move(vc, p, b - count, | |
1618 | vc->vc_rows - b, b); | |
1619 | } else | |
1620 | fbcon_redraw_move(vc, p, t + count, b - t - count, t); | |
1621 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1622 | break; | |
1623 | ||
1624 | case SCROLL_PAN_MOVE: | |
1625 | if ((p->yscroll + count <= | |
1626 | 2 * (p->vrows - vc->vc_rows)) | |
1627 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1628 | || (scroll_partial | |
1629 | && (b - t - count > | |
1630 | 3 * vc->vc_rows >> 2)))) { | |
1631 | if (t > 0) | |
1632 | fbcon_bmove(vc, 0, 0, count, 0, t, | |
1633 | vc->vc_cols); | |
1634 | ypan_up(vc, count); | |
1635 | if (vc->vc_rows - b > 0) | |
1636 | fbcon_bmove(vc, b - count, 0, b, 0, | |
1637 | vc->vc_rows - b, | |
1638 | vc->vc_cols); | |
1639 | } else if (info->flags & FBINFO_READS_FAST) | |
1640 | fbcon_bmove(vc, t + count, 0, t, 0, | |
1641 | b - t - count, vc->vc_cols); | |
1642 | else | |
1643 | goto redraw_up; | |
1644 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1645 | break; | |
1646 | ||
1647 | case SCROLL_REDRAW: | |
1648 | redraw_up: | |
1649 | fbcon_redraw(vc, p, t, b - t - count, | |
1650 | count * vc->vc_cols); | |
1651 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1652 | scr_memsetw((unsigned short *) (vc->vc_origin + | |
1653 | vc->vc_size_row * | |
1654 | (b - count)), | |
1655 | vc->vc_video_erase_char, | |
1656 | vc->vc_size_row * count); | |
1657 | return 1; | |
1658 | } | |
1659 | break; | |
1660 | ||
1661 | case SM_DOWN: | |
1662 | if (count > vc->vc_rows) /* Maximum realistic size */ | |
1663 | count = vc->vc_rows; | |
1664 | switch (p->scrollmode) { | |
1665 | case SCROLL_MOVE: | |
1666 | ops->bmove(vc, info, t, 0, t + count, 0, | |
1667 | b - t - count, vc->vc_cols); | |
1668 | ops->clear(vc, info, t, 0, count, vc->vc_cols); | |
1669 | break; | |
1670 | ||
1671 | case SCROLL_WRAP_MOVE: | |
1672 | if (b - t - count > 3 * vc->vc_rows >> 2) { | |
1673 | if (vc->vc_rows - b > 0) | |
1674 | fbcon_bmove(vc, b, 0, b - count, 0, | |
1675 | vc->vc_rows - b, | |
1676 | vc->vc_cols); | |
1677 | ywrap_down(vc, count); | |
1678 | if (t > 0) | |
1679 | fbcon_bmove(vc, count, 0, 0, 0, t, | |
1680 | vc->vc_cols); | |
1681 | } else if (info->flags & FBINFO_READS_FAST) | |
1682 | fbcon_bmove(vc, t, 0, t + count, 0, | |
1683 | b - t - count, vc->vc_cols); | |
1684 | else | |
1685 | goto redraw_down; | |
1686 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1687 | break; | |
1688 | ||
1689 | case SCROLL_PAN_MOVE: | |
1690 | if ((count - p->yscroll <= p->vrows - vc->vc_rows) | |
1691 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1692 | || (scroll_partial | |
1693 | && (b - t - count > | |
1694 | 3 * vc->vc_rows >> 2)))) { | |
1695 | if (vc->vc_rows - b > 0) | |
1696 | fbcon_bmove(vc, b, 0, b - count, 0, | |
1697 | vc->vc_rows - b, | |
1698 | vc->vc_cols); | |
1699 | ypan_down(vc, count); | |
1700 | if (t > 0) | |
1701 | fbcon_bmove(vc, count, 0, 0, 0, t, | |
1702 | vc->vc_cols); | |
1703 | } else if (info->flags & FBINFO_READS_FAST) | |
1704 | fbcon_bmove(vc, t, 0, t + count, 0, | |
1705 | b - t - count, vc->vc_cols); | |
1706 | else | |
1707 | goto redraw_down; | |
1708 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1709 | break; | |
1710 | ||
1711 | case SCROLL_PAN_REDRAW: | |
1712 | if ((count - p->yscroll <= p->vrows - vc->vc_rows) | |
1713 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1714 | || (scroll_partial | |
1715 | && (b - t - count > | |
1716 | 3 * vc->vc_rows >> 2)))) { | |
1717 | if (vc->vc_rows - b > 0) | |
1718 | fbcon_redraw_move(vc, p, b, vc->vc_rows - b, | |
1719 | b - count); | |
1720 | ypan_down_redraw(vc, t, count); | |
1721 | if (t > 0) | |
1722 | fbcon_redraw_move(vc, p, count, t, 0); | |
1723 | } else | |
1724 | fbcon_redraw_move(vc, p, t, b - t - count, t + count); | |
1725 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1726 | break; | |
1727 | ||
1728 | case SCROLL_REDRAW: | |
1729 | redraw_down: | |
1730 | fbcon_redraw(vc, p, b - 1, b - t - count, | |
1731 | -count * vc->vc_cols); | |
1732 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1733 | scr_memsetw((unsigned short *) (vc->vc_origin + | |
1734 | vc->vc_size_row * | |
1735 | t), | |
1736 | vc->vc_video_erase_char, | |
1737 | vc->vc_size_row * count); | |
1738 | return 1; | |
1739 | } | |
1740 | } | |
1741 | return 0; | |
1742 | } | |
1743 | ||
1744 | ||
1745 | static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, | |
1746 | int height, int width) | |
1747 | { | |
1748 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1749 | struct display *p = &fb_display[vc->vc_num]; | |
1750 | ||
1751 | if (fbcon_is_inactive(vc, info)) | |
1752 | return; | |
1753 | ||
1754 | if (!width || !height) | |
1755 | return; | |
1756 | ||
1757 | /* Split blits that cross physical y_wrap case. | |
1758 | * Pathological case involves 4 blits, better to use recursive | |
1759 | * code rather than unrolled case | |
1760 | * | |
1761 | * Recursive invocations don't need to erase the cursor over and | |
1762 | * over again, so we use fbcon_bmove_rec() | |
1763 | */ | |
1764 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, | |
1765 | p->vrows - p->yscroll); | |
1766 | } | |
1767 | ||
1768 | static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, | |
1769 | int dy, int dx, int height, int width, u_int y_break) | |
1770 | { | |
1771 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1772 | struct fbcon_ops *ops = info->fbcon_par; | |
1773 | u_int b; | |
1774 | ||
1775 | if (sy < y_break && sy + height > y_break) { | |
1776 | b = y_break - sy; | |
1777 | if (dy < sy) { /* Avoid trashing self */ | |
1778 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1779 | y_break); | |
1780 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1781 | height - b, width, y_break); | |
1782 | } else { | |
1783 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1784 | height - b, width, y_break); | |
1785 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1786 | y_break); | |
1787 | } | |
1788 | return; | |
1789 | } | |
1790 | ||
1791 | if (dy < y_break && dy + height > y_break) { | |
1792 | b = y_break - dy; | |
1793 | if (dy < sy) { /* Avoid trashing self */ | |
1794 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1795 | y_break); | |
1796 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1797 | height - b, width, y_break); | |
1798 | } else { | |
1799 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1800 | height - b, width, y_break); | |
1801 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1802 | y_break); | |
1803 | } | |
1804 | return; | |
1805 | } | |
1806 | ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, | |
1807 | height, width); | |
1808 | } | |
1809 | ||
1810 | static __inline__ void updatescrollmode(struct display *p, struct fb_info *info, | |
1811 | struct vc_data *vc) | |
1812 | { | |
1813 | int fh = vc->vc_font.height; | |
1814 | int cap = info->flags; | |
1815 | int good_pan = (cap & FBINFO_HWACCEL_YPAN) | |
1816 | && divides(info->fix.ypanstep, vc->vc_font.height) | |
1817 | && info->var.yres_virtual > info->var.yres; | |
1818 | int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) | |
1819 | && divides(info->fix.ywrapstep, vc->vc_font.height) | |
1820 | && divides(vc->vc_font.height, info->var.yres_virtual); | |
1821 | int reading_fast = cap & FBINFO_READS_FAST; | |
1822 | int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && !(cap & FBINFO_HWACCEL_DISABLED); | |
1823 | int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && !(cap & FBINFO_HWACCEL_DISABLED); | |
1824 | ||
1825 | p->vrows = info->var.yres_virtual/fh; | |
1826 | if (info->var.yres > (fh * (vc->vc_rows + 1))) | |
1827 | p->vrows -= (info->var.yres - (fh * vc->vc_rows)) / fh; | |
1828 | if ((info->var.yres % fh) && (info->var.yres_virtual % fh < | |
1829 | info->var.yres % fh)) | |
1830 | p->vrows--; | |
1831 | ||
1832 | if (good_wrap || good_pan) { | |
1833 | if (reading_fast || fast_copyarea) | |
1834 | p->scrollmode = good_wrap ? SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; | |
1835 | else | |
1836 | p->scrollmode = good_wrap ? SCROLL_REDRAW : | |
1837 | SCROLL_PAN_REDRAW; | |
1838 | } else { | |
1839 | if (reading_fast || (fast_copyarea && !fast_imageblit)) | |
1840 | p->scrollmode = SCROLL_MOVE; | |
1841 | else | |
1842 | p->scrollmode = SCROLL_REDRAW; | |
1843 | } | |
1844 | } | |
1845 | ||
1846 | static int fbcon_resize(struct vc_data *vc, unsigned int width, | |
1847 | unsigned int height) | |
1848 | { | |
1849 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1850 | struct display *p = &fb_display[vc->vc_num]; | |
1851 | struct fb_var_screeninfo var = info->var; | |
1852 | int x_diff, y_diff; | |
1853 | int fw = vc->vc_font.width; | |
1854 | int fh = vc->vc_font.height; | |
1855 | ||
1856 | var.xres = width * fw; | |
1857 | var.yres = height * fh; | |
1858 | x_diff = info->var.xres - var.xres; | |
1859 | y_diff = info->var.yres - var.yres; | |
1860 | if (x_diff < 0 || x_diff > fw || (y_diff < 0 || y_diff > fh)) { | |
1861 | struct fb_videomode *mode; | |
1862 | ||
1863 | DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); | |
1864 | mode = fb_find_best_mode(&var, &info->modelist); | |
1865 | if (mode == NULL) | |
1866 | return -EINVAL; | |
1867 | fb_videomode_to_var(&var, mode); | |
1868 | if (width > var.xres/fw || height > var.yres/fh) | |
1869 | return -EINVAL; | |
1870 | /* | |
1871 | * The following can probably have any value... Do we need to | |
1872 | * set all of them? | |
1873 | */ | |
1874 | var.bits_per_pixel = p->bits_per_pixel; | |
1875 | var.xres_virtual = p->xres_virtual; | |
1876 | var.yres_virtual = p->yres_virtual; | |
1877 | var.accel_flags = p->accel_flags; | |
1878 | var.width = p->width; | |
1879 | var.height = p->height; | |
1880 | var.red = p->red; | |
1881 | var.green = p->green; | |
1882 | var.blue = p->blue; | |
1883 | var.transp = p->transp; | |
1884 | var.nonstd = p->nonstd; | |
1885 | ||
1886 | DPRINTK("resize now %ix%i\n", var.xres, var.yres); | |
1887 | if (CON_IS_VISIBLE(vc)) { | |
1888 | var.activate = FB_ACTIVATE_NOW | | |
1889 | FB_ACTIVATE_FORCE; | |
1890 | fb_set_var(info, &var); | |
1891 | } | |
1892 | var_to_display(p, &info->var, info); | |
1893 | } | |
1894 | updatescrollmode(p, info, vc); | |
1895 | return 0; | |
1896 | } | |
1897 | ||
1898 | static int fbcon_switch(struct vc_data *vc) | |
1899 | { | |
1900 | struct fb_info *info; | |
1901 | struct display *p = &fb_display[vc->vc_num]; | |
1902 | struct fb_var_screeninfo var; | |
1903 | int i, prev_console; | |
1904 | ||
1905 | info = registered_fb[con2fb_map[vc->vc_num]]; | |
1906 | ||
1907 | if (softback_top) { | |
1908 | int l = fbcon_softback_size / vc->vc_size_row; | |
1909 | if (softback_lines) | |
1910 | fbcon_set_origin(vc); | |
1911 | softback_top = softback_curr = softback_in = softback_buf; | |
1912 | softback_lines = 0; | |
1913 | ||
1914 | if (l > 5) | |
1915 | softback_end = softback_buf + l * vc->vc_size_row; | |
1916 | else { | |
1917 | /* Smaller scrollback makes no sense, and 0 would screw | |
1918 | the operation totally */ | |
1919 | softback_top = 0; | |
1920 | } | |
1921 | } | |
1922 | ||
1923 | if (logo_shown >= 0) { | |
1924 | struct vc_data *conp2 = vc_cons[logo_shown].d; | |
1925 | ||
1926 | if (conp2->vc_top == logo_lines | |
1927 | && conp2->vc_bottom == conp2->vc_rows) | |
1928 | conp2->vc_top = 0; | |
1929 | logo_shown = FBCON_LOGO_CANSHOW; | |
1930 | } | |
1931 | ||
1932 | prev_console = ((struct fbcon_ops *)info->fbcon_par)->currcon; | |
1933 | ||
1934 | /* | |
1935 | * FIXME: If we have multiple fbdev's loaded, we need to | |
1936 | * update all info->currcon. Perhaps, we can place this | |
1937 | * in a centralized structure, but this might break some | |
1938 | * drivers. | |
1939 | * | |
1940 | * info->currcon = vc->vc_num; | |
1941 | */ | |
1942 | for (i = 0; i < FB_MAX; i++) { | |
1943 | if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) { | |
1944 | struct fbcon_ops *ops = registered_fb[i]->fbcon_par; | |
1945 | ||
1946 | ops->currcon = vc->vc_num; | |
1947 | } | |
1948 | } | |
1949 | memset(&var, 0, sizeof(struct fb_var_screeninfo)); | |
1950 | display_to_var(&var, p); | |
1951 | var.activate = FB_ACTIVATE_NOW; | |
1952 | ||
1953 | /* | |
1954 | * make sure we don't unnecessarily trip the memcmp() | |
1955 | * in fb_set_var() | |
1956 | */ | |
1957 | info->var.activate = var.activate; | |
1958 | info->var.yoffset = info->var.xoffset = p->yscroll = 0; | |
1959 | fb_set_var(info, &var); | |
1960 | ||
1961 | if (prev_console != -1 && | |
1962 | registered_fb[con2fb_map[prev_console]] != info && | |
1963 | info->fbops->fb_set_par) | |
1964 | info->fbops->fb_set_par(info); | |
1965 | ||
1966 | set_blitting_type(vc, info, p); | |
1967 | ((struct fbcon_ops *)info->fbcon_par)->cursor_reset = 1; | |
1968 | ||
1969 | vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1); | |
1970 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; | |
1971 | updatescrollmode(p, info, vc); | |
1972 | ||
1973 | switch (p->scrollmode) { | |
1974 | case SCROLL_WRAP_MOVE: | |
1975 | scrollback_phys_max = p->vrows - vc->vc_rows; | |
1976 | break; | |
1977 | case SCROLL_PAN_MOVE: | |
1978 | case SCROLL_PAN_REDRAW: | |
1979 | scrollback_phys_max = p->vrows - 2 * vc->vc_rows; | |
1980 | if (scrollback_phys_max < 0) | |
1981 | scrollback_phys_max = 0; | |
1982 | break; | |
1983 | default: | |
1984 | scrollback_phys_max = 0; | |
1985 | break; | |
1986 | } | |
1987 | scrollback_max = 0; | |
1988 | scrollback_current = 0; | |
1989 | ||
1990 | update_var(vc->vc_num, info); | |
1991 | fbcon_set_palette(vc, color_table); | |
1992 | fbcon_clear_margins(vc, 0); | |
1993 | ||
1994 | if (logo_shown == FBCON_LOGO_DRAW) { | |
1995 | ||
1996 | logo_shown = fg_console; | |
1997 | /* This is protected above by initmem_freed */ | |
1998 | fb_show_logo(info); | |
1999 | update_region(vc, | |
2000 | vc->vc_origin + vc->vc_size_row * vc->vc_top, | |
2001 | vc->vc_size_row * (vc->vc_bottom - | |
2002 | vc->vc_top) / 2); | |
2003 | return 0; | |
2004 | } | |
2005 | return 1; | |
2006 | } | |
2007 | ||
2008 | static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, | |
2009 | int blank) | |
2010 | { | |
2011 | if (blank) { | |
2012 | unsigned short charmask = vc->vc_hi_font_mask ? | |
2013 | 0x1ff : 0xff; | |
2014 | unsigned short oldc; | |
2015 | ||
2016 | oldc = vc->vc_video_erase_char; | |
2017 | vc->vc_video_erase_char &= charmask; | |
2018 | fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); | |
2019 | vc->vc_video_erase_char = oldc; | |
2020 | } | |
2021 | } | |
2022 | ||
2023 | static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) | |
2024 | { | |
2025 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2026 | struct fbcon_ops *ops = info->fbcon_par; | |
2027 | ||
2028 | if (mode_switch) { | |
2029 | struct fb_var_screeninfo var = info->var; | |
2030 | ||
2031 | ops->graphics = 1; | |
2032 | ||
2033 | if (!blank) { | |
2034 | var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; | |
2035 | fb_set_var(info, &var); | |
2036 | ops->graphics = 0; | |
2037 | } | |
2038 | } | |
2039 | ||
2040 | if (!fbcon_is_inactive(vc, info)) { | |
2041 | if (ops->blank_state != blank) { | |
2042 | ops->blank_state = blank; | |
2043 | fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); | |
2044 | ops->cursor_flash = (!blank); | |
2045 | ||
2046 | if (fb_blank(info, blank)) | |
2047 | fbcon_generic_blank(vc, info, blank); | |
2048 | } | |
2049 | ||
2050 | if (!blank) | |
2051 | update_screen(vc); | |
2052 | } | |
2053 | ||
2054 | return 0; | |
2055 | } | |
2056 | ||
2057 | static void fbcon_free_font(struct display *p) | |
2058 | { | |
2059 | if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) | |
2060 | kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); | |
2061 | p->fontdata = NULL; | |
2062 | p->userfont = 0; | |
2063 | } | |
2064 | ||
2065 | static int fbcon_get_font(struct vc_data *vc, struct console_font *font) | |
2066 | { | |
2067 | u8 *fontdata = vc->vc_font.data; | |
2068 | u8 *data = font->data; | |
2069 | int i, j; | |
2070 | ||
2071 | font->width = vc->vc_font.width; | |
2072 | font->height = vc->vc_font.height; | |
2073 | font->charcount = vc->vc_hi_font_mask ? 512 : 256; | |
2074 | if (!font->data) | |
2075 | return 0; | |
2076 | ||
2077 | if (font->width <= 8) { | |
2078 | j = vc->vc_font.height; | |
2079 | for (i = 0; i < font->charcount; i++) { | |
2080 | memcpy(data, fontdata, j); | |
2081 | memset(data + j, 0, 32 - j); | |
2082 | data += 32; | |
2083 | fontdata += j; | |
2084 | } | |
2085 | } else if (font->width <= 16) { | |
2086 | j = vc->vc_font.height * 2; | |
2087 | for (i = 0; i < font->charcount; i++) { | |
2088 | memcpy(data, fontdata, j); | |
2089 | memset(data + j, 0, 64 - j); | |
2090 | data += 64; | |
2091 | fontdata += j; | |
2092 | } | |
2093 | } else if (font->width <= 24) { | |
2094 | for (i = 0; i < font->charcount; i++) { | |
2095 | for (j = 0; j < vc->vc_font.height; j++) { | |
2096 | *data++ = fontdata[0]; | |
2097 | *data++ = fontdata[1]; | |
2098 | *data++ = fontdata[2]; | |
2099 | fontdata += sizeof(u32); | |
2100 | } | |
2101 | memset(data, 0, 3 * (32 - j)); | |
2102 | data += 3 * (32 - j); | |
2103 | } | |
2104 | } else { | |
2105 | j = vc->vc_font.height * 4; | |
2106 | for (i = 0; i < font->charcount; i++) { | |
2107 | memcpy(data, fontdata, j); | |
2108 | memset(data + j, 0, 128 - j); | |
2109 | data += 128; | |
2110 | fontdata += j; | |
2111 | } | |
2112 | } | |
2113 | return 0; | |
2114 | } | |
2115 | ||
2116 | static int fbcon_do_set_font(struct vc_data *vc, int w, int h, | |
2117 | u8 * data, int userfont) | |
2118 | { | |
2119 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2120 | struct display *p = &fb_display[vc->vc_num]; | |
2121 | int resize; | |
2122 | int cnt; | |
2123 | char *old_data = NULL; | |
2124 | ||
2125 | if (CON_IS_VISIBLE(vc) && softback_lines) | |
2126 | fbcon_set_origin(vc); | |
2127 | ||
2128 | resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); | |
2129 | if (p->userfont) | |
2130 | old_data = vc->vc_font.data; | |
2131 | if (userfont) | |
2132 | cnt = FNTCHARCNT(data); | |
2133 | else | |
2134 | cnt = 256; | |
2135 | vc->vc_font.data = p->fontdata = data; | |
2136 | if ((p->userfont = userfont)) | |
2137 | REFCOUNT(data)++; | |
2138 | vc->vc_font.width = w; | |
2139 | vc->vc_font.height = h; | |
2140 | if (vc->vc_hi_font_mask && cnt == 256) { | |
2141 | vc->vc_hi_font_mask = 0; | |
2142 | if (vc->vc_can_do_color) { | |
2143 | vc->vc_complement_mask >>= 1; | |
2144 | vc->vc_s_complement_mask >>= 1; | |
2145 | } | |
2146 | ||
2147 | /* ++Edmund: reorder the attribute bits */ | |
2148 | if (vc->vc_can_do_color) { | |
2149 | unsigned short *cp = | |
2150 | (unsigned short *) vc->vc_origin; | |
2151 | int count = vc->vc_screenbuf_size / 2; | |
2152 | unsigned short c; | |
2153 | for (; count > 0; count--, cp++) { | |
2154 | c = scr_readw(cp); | |
2155 | scr_writew(((c & 0xfe00) >> 1) | | |
2156 | (c & 0xff), cp); | |
2157 | } | |
2158 | c = vc->vc_video_erase_char; | |
2159 | vc->vc_video_erase_char = | |
2160 | ((c & 0xfe00) >> 1) | (c & 0xff); | |
2161 | vc->vc_attr >>= 1; | |
2162 | } | |
2163 | } else if (!vc->vc_hi_font_mask && cnt == 512) { | |
2164 | vc->vc_hi_font_mask = 0x100; | |
2165 | if (vc->vc_can_do_color) { | |
2166 | vc->vc_complement_mask <<= 1; | |
2167 | vc->vc_s_complement_mask <<= 1; | |
2168 | } | |
2169 | ||
2170 | /* ++Edmund: reorder the attribute bits */ | |
2171 | { | |
2172 | unsigned short *cp = | |
2173 | (unsigned short *) vc->vc_origin; | |
2174 | int count = vc->vc_screenbuf_size / 2; | |
2175 | unsigned short c; | |
2176 | for (; count > 0; count--, cp++) { | |
2177 | unsigned short newc; | |
2178 | c = scr_readw(cp); | |
2179 | if (vc->vc_can_do_color) | |
2180 | newc = | |
2181 | ((c & 0xff00) << 1) | (c & | |
2182 | 0xff); | |
2183 | else | |
2184 | newc = c & ~0x100; | |
2185 | scr_writew(newc, cp); | |
2186 | } | |
2187 | c = vc->vc_video_erase_char; | |
2188 | if (vc->vc_can_do_color) { | |
2189 | vc->vc_video_erase_char = | |
2190 | ((c & 0xff00) << 1) | (c & 0xff); | |
2191 | vc->vc_attr <<= 1; | |
2192 | } else | |
2193 | vc->vc_video_erase_char = c & ~0x100; | |
2194 | } | |
2195 | ||
2196 | } | |
2197 | ||
2198 | if (resize) { | |
2199 | /* reset wrap/pan */ | |
2200 | info->var.xoffset = info->var.yoffset = p->yscroll = 0; | |
2201 | vc_resize(vc, info->var.xres / w, info->var.yres / h); | |
2202 | if (CON_IS_VISIBLE(vc) && softback_buf) { | |
2203 | int l = fbcon_softback_size / vc->vc_size_row; | |
2204 | if (l > 5) | |
2205 | softback_end = | |
2206 | softback_buf + l * vc->vc_size_row; | |
2207 | else { | |
2208 | /* Smaller scrollback makes no sense, and 0 would screw | |
2209 | the operation totally */ | |
2210 | softback_top = 0; | |
2211 | } | |
2212 | } | |
2213 | } else if (CON_IS_VISIBLE(vc) | |
2214 | && vc->vc_mode == KD_TEXT) { | |
2215 | fbcon_clear_margins(vc, 0); | |
2216 | update_screen(vc); | |
2217 | } | |
2218 | ||
2219 | if (old_data && (--REFCOUNT(old_data) == 0)) | |
2220 | kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); | |
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | static int fbcon_copy_font(struct vc_data *vc, int con) | |
2225 | { | |
2226 | struct display *od = &fb_display[con]; | |
2227 | struct console_font *f = &vc->vc_font; | |
2228 | ||
2229 | if (od->fontdata == f->data) | |
2230 | return 0; /* already the same font... */ | |
2231 | return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); | |
2232 | } | |
2233 | ||
2234 | /* | |
2235 | * User asked to set font; we are guaranteed that | |
2236 | * a) width and height are in range 1..32 | |
2237 | * b) charcount does not exceed 512 | |
2238 | * but lets not assume that, since someone might someday want to use larger | |
2239 | * fonts. And charcount of 512 is small for unicode support. | |
2240 | * | |
2241 | * However, user space gives the font in 32 rows , regardless of | |
2242 | * actual font height. So a new API is needed if support for larger fonts | |
2243 | * is ever implemented. | |
2244 | */ | |
2245 | ||
2246 | static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags) | |
2247 | { | |
2248 | unsigned charcount = font->charcount; | |
2249 | int w = font->width; | |
2250 | int h = font->height; | |
2251 | int size; | |
2252 | int i, csum; | |
2253 | u8 *new_data, *data = font->data; | |
2254 | int pitch = (font->width+7) >> 3; | |
2255 | ||
2256 | /* Is there a reason why fbconsole couldn't handle any charcount >256? | |
2257 | * If not this check should be changed to charcount < 256 */ | |
2258 | if (charcount != 256 && charcount != 512) | |
2259 | return -EINVAL; | |
2260 | ||
2261 | size = h * pitch * charcount; | |
2262 | ||
2263 | new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); | |
2264 | ||
2265 | if (!new_data) | |
2266 | return -ENOMEM; | |
2267 | ||
2268 | new_data += FONT_EXTRA_WORDS * sizeof(int); | |
2269 | FNTSIZE(new_data) = size; | |
2270 | FNTCHARCNT(new_data) = charcount; | |
2271 | REFCOUNT(new_data) = 0; /* usage counter */ | |
2272 | for (i=0; i< charcount; i++) { | |
2273 | memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); | |
2274 | } | |
2275 | ||
2276 | /* Since linux has a nice crc32 function use it for counting font | |
2277 | * checksums. */ | |
2278 | csum = crc32(0, new_data, size); | |
2279 | ||
2280 | FNTSUM(new_data) = csum; | |
2281 | /* Check if the same font is on some other console already */ | |
2282 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2283 | struct vc_data *tmp = vc_cons[i].d; | |
2284 | ||
2285 | if (fb_display[i].userfont && | |
2286 | fb_display[i].fontdata && | |
2287 | FNTSUM(fb_display[i].fontdata) == csum && | |
2288 | FNTSIZE(fb_display[i].fontdata) == size && | |
2289 | tmp->vc_font.width == w && | |
2290 | !memcmp(fb_display[i].fontdata, new_data, size)) { | |
2291 | kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); | |
2292 | new_data = fb_display[i].fontdata; | |
2293 | break; | |
2294 | } | |
2295 | } | |
2296 | return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); | |
2297 | } | |
2298 | ||
2299 | static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) | |
2300 | { | |
2301 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2302 | struct font_desc *f; | |
2303 | ||
2304 | if (!name) | |
2305 | f = get_default_font(info->var.xres, info->var.yres); | |
2306 | else if (!(f = find_font(name))) | |
2307 | return -ENOENT; | |
2308 | ||
2309 | font->width = f->width; | |
2310 | font->height = f->height; | |
2311 | return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); | |
2312 | } | |
2313 | ||
2314 | static u16 palette_red[16]; | |
2315 | static u16 palette_green[16]; | |
2316 | static u16 palette_blue[16]; | |
2317 | ||
2318 | static struct fb_cmap palette_cmap = { | |
2319 | 0, 16, palette_red, palette_green, palette_blue, NULL | |
2320 | }; | |
2321 | ||
2322 | static int fbcon_set_palette(struct vc_data *vc, unsigned char *table) | |
2323 | { | |
2324 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2325 | int i, j, k, depth; | |
2326 | u8 val; | |
2327 | ||
2328 | if (fbcon_is_inactive(vc, info)) | |
2329 | return -EINVAL; | |
2330 | ||
2331 | if (!CON_IS_VISIBLE(vc)) | |
2332 | return 0; | |
2333 | ||
2334 | depth = fb_get_color_depth(&info->var); | |
2335 | if (depth > 3) { | |
2336 | for (i = j = 0; i < 16; i++) { | |
2337 | k = table[i]; | |
2338 | val = vc->vc_palette[j++]; | |
2339 | palette_red[k] = (val << 8) | val; | |
2340 | val = vc->vc_palette[j++]; | |
2341 | palette_green[k] = (val << 8) | val; | |
2342 | val = vc->vc_palette[j++]; | |
2343 | palette_blue[k] = (val << 8) | val; | |
2344 | } | |
2345 | palette_cmap.len = 16; | |
2346 | palette_cmap.start = 0; | |
2347 | /* | |
2348 | * If framebuffer is capable of less than 16 colors, | |
2349 | * use default palette of fbcon. | |
2350 | */ | |
2351 | } else | |
2352 | fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); | |
2353 | ||
2354 | return fb_set_cmap(&palette_cmap, info); | |
2355 | } | |
2356 | ||
2357 | static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) | |
2358 | { | |
2359 | unsigned long p; | |
2360 | int line; | |
2361 | ||
2362 | if (vc->vc_num != fg_console || !softback_lines) | |
2363 | return (u16 *) (vc->vc_origin + offset); | |
2364 | line = offset / vc->vc_size_row; | |
2365 | if (line >= softback_lines) | |
2366 | return (u16 *) (vc->vc_origin + offset - | |
2367 | softback_lines * vc->vc_size_row); | |
2368 | p = softback_curr + offset; | |
2369 | if (p >= softback_end) | |
2370 | p += softback_buf - softback_end; | |
2371 | return (u16 *) p; | |
2372 | } | |
2373 | ||
2374 | static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, | |
2375 | int *px, int *py) | |
2376 | { | |
2377 | unsigned long ret; | |
2378 | int x, y; | |
2379 | ||
2380 | if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { | |
2381 | unsigned long offset = (pos - vc->vc_origin) / 2; | |
2382 | ||
2383 | x = offset % vc->vc_cols; | |
2384 | y = offset / vc->vc_cols; | |
2385 | if (vc->vc_num == fg_console) | |
2386 | y += softback_lines; | |
2387 | ret = pos + (vc->vc_cols - x) * 2; | |
2388 | } else if (vc->vc_num == fg_console && softback_lines) { | |
2389 | unsigned long offset = pos - softback_curr; | |
2390 | ||
2391 | if (pos < softback_curr) | |
2392 | offset += softback_end - softback_buf; | |
2393 | offset /= 2; | |
2394 | x = offset % vc->vc_cols; | |
2395 | y = offset / vc->vc_cols; | |
2396 | ret = pos + (vc->vc_cols - x) * 2; | |
2397 | if (ret == softback_end) | |
2398 | ret = softback_buf; | |
2399 | if (ret == softback_in) | |
2400 | ret = vc->vc_origin; | |
2401 | } else { | |
2402 | /* Should not happen */ | |
2403 | x = y = 0; | |
2404 | ret = vc->vc_origin; | |
2405 | } | |
2406 | if (px) | |
2407 | *px = x; | |
2408 | if (py) | |
2409 | *py = y; | |
2410 | return ret; | |
2411 | } | |
2412 | ||
2413 | /* As we might be inside of softback, we may work with non-contiguous buffer, | |
2414 | that's why we have to use a separate routine. */ | |
2415 | static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) | |
2416 | { | |
2417 | while (cnt--) { | |
2418 | u16 a = scr_readw(p); | |
2419 | if (!vc->vc_can_do_color) | |
2420 | a ^= 0x0800; | |
2421 | else if (vc->vc_hi_font_mask == 0x100) | |
2422 | a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | | |
2423 | (((a) & 0x0e00) << 4); | |
2424 | else | |
2425 | a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | | |
2426 | (((a) & 0x0700) << 4); | |
2427 | scr_writew(a, p++); | |
2428 | if (p == (u16 *) softback_end) | |
2429 | p = (u16 *) softback_buf; | |
2430 | if (p == (u16 *) softback_in) | |
2431 | p = (u16 *) vc->vc_origin; | |
2432 | } | |
2433 | } | |
2434 | ||
2435 | static int fbcon_scrolldelta(struct vc_data *vc, int lines) | |
2436 | { | |
2437 | struct fb_info *info = registered_fb[con2fb_map[fg_console]]; | |
2438 | struct display *p = &fb_display[fg_console]; | |
2439 | int offset, limit, scrollback_old; | |
2440 | ||
2441 | if (softback_top) { | |
2442 | if (vc->vc_num != fg_console) | |
2443 | return 0; | |
2444 | if (vc->vc_mode != KD_TEXT || !lines) | |
2445 | return 0; | |
2446 | if (logo_shown >= 0) { | |
2447 | struct vc_data *conp2 = vc_cons[logo_shown].d; | |
2448 | ||
2449 | if (conp2->vc_top == logo_lines | |
2450 | && conp2->vc_bottom == conp2->vc_rows) | |
2451 | conp2->vc_top = 0; | |
2452 | if (logo_shown == vc->vc_num) { | |
2453 | unsigned long p, q; | |
2454 | int i; | |
2455 | ||
2456 | p = softback_in; | |
2457 | q = vc->vc_origin + | |
2458 | logo_lines * vc->vc_size_row; | |
2459 | for (i = 0; i < logo_lines; i++) { | |
2460 | if (p == softback_top) | |
2461 | break; | |
2462 | if (p == softback_buf) | |
2463 | p = softback_end; | |
2464 | p -= vc->vc_size_row; | |
2465 | q -= vc->vc_size_row; | |
2466 | scr_memcpyw((u16 *) q, (u16 *) p, | |
2467 | vc->vc_size_row); | |
2468 | } | |
2469 | softback_in = p; | |
2470 | update_region(vc, vc->vc_origin, | |
2471 | logo_lines * vc->vc_cols); | |
2472 | } | |
2473 | logo_shown = FBCON_LOGO_CANSHOW; | |
2474 | } | |
2475 | fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); | |
2476 | fbcon_redraw_softback(vc, p, lines); | |
2477 | fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); | |
2478 | return 0; | |
2479 | } | |
2480 | ||
2481 | if (!scrollback_phys_max) | |
2482 | return -ENOSYS; | |
2483 | ||
2484 | scrollback_old = scrollback_current; | |
2485 | scrollback_current -= lines; | |
2486 | if (scrollback_current < 0) | |
2487 | scrollback_current = 0; | |
2488 | else if (scrollback_current > scrollback_max) | |
2489 | scrollback_current = scrollback_max; | |
2490 | if (scrollback_current == scrollback_old) | |
2491 | return 0; | |
2492 | ||
2493 | if (fbcon_is_inactive(vc, info)) | |
2494 | return 0; | |
2495 | ||
2496 | fbcon_cursor(vc, CM_ERASE); | |
2497 | ||
2498 | offset = p->yscroll - scrollback_current; | |
2499 | limit = p->vrows; | |
2500 | switch (p->scrollmode) { | |
2501 | case SCROLL_WRAP_MOVE: | |
2502 | info->var.vmode |= FB_VMODE_YWRAP; | |
2503 | break; | |
2504 | case SCROLL_PAN_MOVE: | |
2505 | case SCROLL_PAN_REDRAW: | |
2506 | limit -= vc->vc_rows; | |
2507 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
2508 | break; | |
2509 | } | |
2510 | if (offset < 0) | |
2511 | offset += limit; | |
2512 | else if (offset >= limit) | |
2513 | offset -= limit; | |
2514 | info->var.xoffset = 0; | |
2515 | info->var.yoffset = offset * vc->vc_font.height; | |
2516 | update_var(vc->vc_num, info); | |
2517 | if (!scrollback_current) | |
2518 | fbcon_cursor(vc, CM_DRAW); | |
2519 | return 0; | |
2520 | } | |
2521 | ||
2522 | static int fbcon_set_origin(struct vc_data *vc) | |
2523 | { | |
2524 | if (softback_lines) | |
2525 | fbcon_scrolldelta(vc, softback_lines); | |
2526 | return 0; | |
2527 | } | |
2528 | ||
2529 | static void fbcon_suspended(struct fb_info *info) | |
2530 | { | |
2531 | struct vc_data *vc = NULL; | |
2532 | struct fbcon_ops *ops = info->fbcon_par; | |
2533 | ||
2534 | if (!ops || ops->currcon < 0) | |
2535 | return; | |
2536 | vc = vc_cons[ops->currcon].d; | |
2537 | ||
2538 | /* Clear cursor, restore saved data */ | |
2539 | fbcon_cursor(vc, CM_ERASE); | |
2540 | } | |
2541 | ||
2542 | static void fbcon_resumed(struct fb_info *info) | |
2543 | { | |
2544 | struct vc_data *vc; | |
2545 | struct fbcon_ops *ops = info->fbcon_par; | |
2546 | ||
2547 | if (!ops || ops->currcon < 0) | |
2548 | return; | |
2549 | vc = vc_cons[ops->currcon].d; | |
2550 | ||
2551 | update_screen(vc); | |
2552 | } | |
2553 | ||
2554 | static void fbcon_modechanged(struct fb_info *info) | |
2555 | { | |
2556 | struct fbcon_ops *ops = info->fbcon_par; | |
2557 | struct vc_data *vc; | |
2558 | struct display *p; | |
2559 | int rows, cols; | |
2560 | ||
2561 | if (!ops || ops->currcon < 0) | |
2562 | return; | |
2563 | vc = vc_cons[ops->currcon].d; | |
2564 | if (vc->vc_mode != KD_TEXT || registered_fb[con2fb_map[ops->currcon]] != info) | |
2565 | return; | |
2566 | ||
2567 | p = &fb_display[vc->vc_num]; | |
2568 | ||
2569 | info->var.xoffset = info->var.yoffset = p->yscroll = 0; | |
2570 | ||
2571 | if (CON_IS_VISIBLE(vc)) { | |
2572 | var_to_display(p, &info->var, info); | |
2573 | cols = info->var.xres / vc->vc_font.width; | |
2574 | rows = info->var.yres / vc->vc_font.height; | |
2575 | vc_resize(vc, cols, rows); | |
2576 | updatescrollmode(p, info, vc); | |
2577 | scrollback_max = 0; | |
2578 | scrollback_current = 0; | |
2579 | update_var(vc->vc_num, info); | |
2580 | fbcon_set_palette(vc, color_table); | |
2581 | update_screen(vc); | |
2582 | if (softback_buf) { | |
2583 | int l = fbcon_softback_size / vc->vc_size_row; | |
2584 | if (l > 5) | |
2585 | softback_end = softback_buf + l * vc->vc_size_row; | |
2586 | else { | |
2587 | /* Smaller scrollback makes no sense, and 0 | |
2588 | would screw the operation totally */ | |
2589 | softback_top = 0; | |
2590 | } | |
2591 | } | |
2592 | } | |
2593 | } | |
2594 | ||
2595 | static int fbcon_mode_deleted(struct fb_info *info, | |
2596 | struct fb_videomode *mode) | |
2597 | { | |
2598 | struct fb_info *fb_info; | |
2599 | struct display *p; | |
2600 | int i, j, found = 0; | |
2601 | ||
2602 | /* before deletion, ensure that mode is not in use */ | |
2603 | for (i = first_fb_vc; i <= last_fb_vc; i++) { | |
2604 | j = con2fb_map[i]; | |
2605 | if (j == -1) | |
2606 | continue; | |
2607 | fb_info = registered_fb[j]; | |
2608 | if (fb_info != info) | |
2609 | continue; | |
2610 | p = &fb_display[i]; | |
2611 | if (!p || !p->mode) | |
2612 | continue; | |
2613 | if (fb_mode_is_equal(p->mode, mode)) { | |
2614 | found = 1; | |
2615 | break; | |
2616 | } | |
2617 | } | |
2618 | return found; | |
2619 | } | |
2620 | ||
2621 | static int fbcon_fb_registered(int idx) | |
2622 | { | |
2623 | int ret = 0, i; | |
2624 | ||
2625 | if (info_idx == -1) { | |
2626 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2627 | if (con2fb_map_boot[i] == idx) { | |
2628 | info_idx = idx; | |
2629 | break; | |
2630 | } | |
2631 | } | |
2632 | if (info_idx != -1) | |
2633 | ret = fbcon_takeover(1); | |
2634 | } else { | |
2635 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2636 | if (con2fb_map_boot[i] == idx) | |
2637 | set_con2fb_map(i, idx, 0); | |
2638 | } | |
2639 | } | |
2640 | ||
2641 | return ret; | |
2642 | } | |
2643 | ||
2644 | static void fbcon_fb_blanked(struct fb_info *info, int blank) | |
2645 | { | |
2646 | struct fbcon_ops *ops = info->fbcon_par; | |
2647 | struct vc_data *vc; | |
2648 | ||
2649 | if (!ops || ops->currcon < 0) | |
2650 | return; | |
2651 | ||
2652 | vc = vc_cons[ops->currcon].d; | |
2653 | if (vc->vc_mode != KD_TEXT || | |
2654 | registered_fb[con2fb_map[ops->currcon]] != info) | |
2655 | return; | |
2656 | ||
2657 | if (CON_IS_VISIBLE(vc)) { | |
2658 | if (blank) | |
2659 | do_blank_screen(0); | |
2660 | else | |
2661 | do_unblank_screen(0); | |
2662 | } | |
2663 | ops->blank_state = blank; | |
2664 | } | |
2665 | ||
2666 | static void fbcon_new_modelist(struct fb_info *info) | |
2667 | { | |
2668 | int i; | |
2669 | struct vc_data *vc; | |
2670 | struct fb_var_screeninfo var; | |
2671 | struct fb_videomode *mode; | |
2672 | ||
2673 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2674 | if (registered_fb[con2fb_map[i]] != info) | |
2675 | continue; | |
2676 | if (!fb_display[i].mode) | |
2677 | continue; | |
2678 | vc = vc_cons[i].d; | |
2679 | display_to_var(&var, &fb_display[i]); | |
2680 | mode = fb_find_nearest_mode(&var, &info->modelist); | |
2681 | fb_videomode_to_var(&var, mode); | |
2682 | ||
2683 | if (vc) | |
2684 | fbcon_set_disp(info, &var, vc); | |
2685 | else | |
2686 | fbcon_preset_disp(info, &var, i); | |
2687 | ||
2688 | } | |
2689 | } | |
2690 | ||
2691 | static int fbcon_event_notify(struct notifier_block *self, | |
2692 | unsigned long action, void *data) | |
2693 | { | |
2694 | struct fb_event *event = data; | |
2695 | struct fb_info *info = event->info; | |
2696 | struct fb_videomode *mode; | |
2697 | struct fb_con2fbmap *con2fb; | |
2698 | int ret = 0; | |
2699 | ||
2700 | switch(action) { | |
2701 | case FB_EVENT_SUSPEND: | |
2702 | fbcon_suspended(info); | |
2703 | break; | |
2704 | case FB_EVENT_RESUME: | |
2705 | fbcon_resumed(info); | |
2706 | break; | |
2707 | case FB_EVENT_MODE_CHANGE: | |
2708 | fbcon_modechanged(info); | |
2709 | break; | |
2710 | case FB_EVENT_MODE_DELETE: | |
2711 | mode = event->data; | |
2712 | ret = fbcon_mode_deleted(info, mode); | |
2713 | break; | |
2714 | case FB_EVENT_FB_REGISTERED: | |
2715 | ret = fbcon_fb_registered(info->node); | |
2716 | break; | |
2717 | case FB_EVENT_SET_CONSOLE_MAP: | |
2718 | con2fb = event->data; | |
2719 | ret = set_con2fb_map(con2fb->console - 1, | |
2720 | con2fb->framebuffer, 1); | |
2721 | break; | |
2722 | case FB_EVENT_GET_CONSOLE_MAP: | |
2723 | con2fb = event->data; | |
2724 | con2fb->framebuffer = con2fb_map[con2fb->console - 1]; | |
2725 | break; | |
2726 | case FB_EVENT_BLANK: | |
2727 | fbcon_fb_blanked(info, *(int *)event->data); | |
2728 | break; | |
2729 | case FB_EVENT_NEW_MODELIST: | |
2730 | fbcon_new_modelist(info); | |
2731 | break; | |
2732 | } | |
2733 | ||
2734 | return ret; | |
2735 | } | |
2736 | ||
2737 | /* | |
2738 | * The console `switch' structure for the frame buffer based console | |
2739 | */ | |
2740 | ||
2741 | static const struct consw fb_con = { | |
2742 | .owner = THIS_MODULE, | |
2743 | .con_startup = fbcon_startup, | |
2744 | .con_init = fbcon_init, | |
2745 | .con_deinit = fbcon_deinit, | |
2746 | .con_clear = fbcon_clear, | |
2747 | .con_putc = fbcon_putc, | |
2748 | .con_putcs = fbcon_putcs, | |
2749 | .con_cursor = fbcon_cursor, | |
2750 | .con_scroll = fbcon_scroll, | |
2751 | .con_bmove = fbcon_bmove, | |
2752 | .con_switch = fbcon_switch, | |
2753 | .con_blank = fbcon_blank, | |
2754 | .con_font_set = fbcon_set_font, | |
2755 | .con_font_get = fbcon_get_font, | |
2756 | .con_font_default = fbcon_set_def_font, | |
2757 | .con_font_copy = fbcon_copy_font, | |
2758 | .con_set_palette = fbcon_set_palette, | |
2759 | .con_scrolldelta = fbcon_scrolldelta, | |
2760 | .con_set_origin = fbcon_set_origin, | |
2761 | .con_invert_region = fbcon_invert_region, | |
2762 | .con_screen_pos = fbcon_screen_pos, | |
2763 | .con_getxy = fbcon_getxy, | |
2764 | .con_resize = fbcon_resize, | |
2765 | }; | |
2766 | ||
2767 | static struct notifier_block fbcon_event_notifier = { | |
2768 | .notifier_call = fbcon_event_notify, | |
2769 | }; | |
2770 | ||
2771 | static int __init fb_console_init(void) | |
2772 | { | |
2773 | int i; | |
2774 | ||
2775 | acquire_console_sem(); | |
2776 | fb_register_client(&fbcon_event_notifier); | |
2777 | release_console_sem(); | |
2778 | ||
2779 | for (i = 0; i < MAX_NR_CONSOLES; i++) | |
2780 | con2fb_map[i] = -1; | |
2781 | ||
2782 | if (num_registered_fb) { | |
2783 | for (i = 0; i < FB_MAX; i++) { | |
2784 | if (registered_fb[i] != NULL) { | |
2785 | info_idx = i; | |
2786 | break; | |
2787 | } | |
2788 | } | |
2789 | fbcon_takeover(0); | |
2790 | } | |
2791 | ||
2792 | return 0; | |
2793 | } | |
2794 | ||
2795 | module_init(fb_console_init); | |
2796 | ||
2797 | #ifdef MODULE | |
2798 | ||
2799 | static void __exit fb_console_exit(void) | |
2800 | { | |
2801 | acquire_console_sem(); | |
2802 | fb_unregister_client(&fbcon_event_notifier); | |
2803 | release_console_sem(); | |
2804 | give_up_console(&fb_con); | |
2805 | } | |
2806 | ||
2807 | module_exit(fb_console_exit); | |
2808 | ||
2809 | #endif | |
2810 | ||
2811 | MODULE_LICENSE("GPL"); |