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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 */ | |
145 | #define ARM_CURSOR_BLINK_RATE (10) | |
146 | #define ATARI_CURSOR_BLINK_RATE (42) | |
147 | #define MAC_CURSOR_BLINK_RATE (32) | |
148 | #define DEFAULT_CURSOR_BLINK_RATE (20) | |
149 | ||
150 | static int vbl_cursor_cnt; | |
151 | ||
152 | #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) | |
153 | ||
154 | /* | |
155 | * Interface used by the world | |
156 | */ | |
157 | ||
158 | static const char *fbcon_startup(void); | |
159 | static void fbcon_init(struct vc_data *vc, int init); | |
160 | static void fbcon_deinit(struct vc_data *vc); | |
161 | static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, | |
162 | int width); | |
163 | static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); | |
164 | static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, | |
165 | int count, int ypos, int xpos); | |
166 | static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); | |
167 | static void fbcon_cursor(struct vc_data *vc, int mode); | |
168 | static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir, | |
169 | int count); | |
170 | static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, | |
171 | int height, int width); | |
172 | static int fbcon_switch(struct vc_data *vc); | |
173 | static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); | |
174 | static int fbcon_set_palette(struct vc_data *vc, unsigned char *table); | |
175 | static int fbcon_scrolldelta(struct vc_data *vc, int lines); | |
176 | ||
177 | /* | |
178 | * Internal routines | |
179 | */ | |
180 | static __inline__ int real_y(struct display *p, int ypos); | |
181 | static __inline__ void ywrap_up(struct vc_data *vc, int count); | |
182 | static __inline__ void ywrap_down(struct vc_data *vc, int count); | |
183 | static __inline__ void ypan_up(struct vc_data *vc, int count); | |
184 | static __inline__ void ypan_down(struct vc_data *vc, int count); | |
185 | static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, | |
186 | int dy, int dx, int height, int width, u_int y_break); | |
187 | static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
188 | struct vc_data *vc); | |
189 | static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
190 | int unit); | |
191 | static void fbcon_redraw_move(struct vc_data *vc, struct display *p, | |
192 | int line, int count, int dy); | |
193 | ||
194 | #ifdef CONFIG_MAC | |
195 | /* | |
196 | * On the Macintoy, there may or may not be a working VBL int. We need to probe | |
197 | */ | |
198 | static int vbl_detected; | |
199 | ||
200 | static irqreturn_t fb_vbl_detect(int irq, void *dummy, struct pt_regs *fp) | |
201 | { | |
202 | vbl_detected++; | |
203 | return IRQ_HANDLED; | |
204 | } | |
205 | #endif | |
206 | ||
207 | static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) | |
208 | { | |
209 | struct fbcon_ops *ops = info->fbcon_par; | |
210 | ||
211 | return (info->state != FBINFO_STATE_RUNNING || | |
212 | vc->vc_mode != KD_TEXT || ops->graphics); | |
213 | } | |
214 | ||
215 | static inline int get_color(struct vc_data *vc, struct fb_info *info, | |
216 | u16 c, int is_fg) | |
217 | { | |
218 | int depth = fb_get_color_depth(&info->var); | |
219 | int color = 0; | |
220 | ||
221 | if (console_blanked) { | |
222 | unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; | |
223 | ||
224 | c = vc->vc_video_erase_char & charmask; | |
225 | } | |
226 | ||
227 | if (depth != 1) | |
228 | color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) | |
229 | : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); | |
230 | ||
231 | switch (depth) { | |
232 | case 1: | |
233 | { | |
234 | /* 0 or 1 */ | |
235 | int fg = (info->fix.visual != FB_VISUAL_MONO01) ? 1 : 0; | |
236 | int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : 1; | |
237 | ||
238 | if (console_blanked) | |
239 | fg = bg; | |
240 | ||
241 | color = (is_fg) ? fg : bg; | |
242 | break; | |
243 | } | |
244 | case 2: | |
245 | /* | |
246 | * Scale down 16-colors to 4 colors. Default 4-color palette | |
247 | * is grayscale. | |
248 | */ | |
249 | color /= 4; | |
250 | break; | |
251 | case 3: | |
252 | /* | |
253 | * Last 8 entries of default 16-color palette is a more intense | |
254 | * version of the first 8 (i.e., same chrominance, different | |
255 | * luminance). | |
256 | */ | |
257 | color &= 7; | |
258 | break; | |
259 | } | |
260 | ||
261 | ||
262 | return color; | |
263 | } | |
264 | ||
265 | static void fb_flashcursor(void *private) | |
266 | { | |
267 | struct fb_info *info = private; | |
268 | struct fbcon_ops *ops = info->fbcon_par; | |
269 | struct display *p; | |
270 | struct vc_data *vc = NULL; | |
271 | int c; | |
272 | int mode; | |
273 | ||
274 | if (ops->currcon != -1) | |
275 | vc = vc_cons[ops->currcon].d; | |
276 | ||
277 | if (!vc || !CON_IS_VISIBLE(vc) || | |
278 | fbcon_is_inactive(vc, info) || | |
279 | registered_fb[con2fb_map[vc->vc_num]] != info) | |
280 | return; | |
281 | acquire_console_sem(); | |
282 | p = &fb_display[vc->vc_num]; | |
283 | c = scr_readw((u16 *) vc->vc_pos); | |
284 | mode = (!ops->cursor_flash || ops->cursor_state.enable) ? | |
285 | CM_ERASE : CM_DRAW; | |
286 | ops->cursor(vc, info, p, mode, softback_lines, get_color(vc, info, c, 1), | |
287 | get_color(vc, info, c, 0)); | |
288 | release_console_sem(); | |
289 | } | |
290 | ||
291 | #if (defined(__arm__) && defined(IRQ_VSYNCPULSE)) || defined(CONFIG_ATARI) || defined(CONFIG_MAC) | |
292 | static int cursor_blink_rate; | |
293 | static irqreturn_t fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp) | |
294 | { | |
295 | struct fb_info *info = dev_id; | |
296 | ||
297 | if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) { | |
298 | schedule_work(&info->queue); | |
299 | vbl_cursor_cnt = cursor_blink_rate; | |
300 | } | |
301 | return IRQ_HANDLED; | |
302 | } | |
303 | #endif | |
304 | ||
305 | static void cursor_timer_handler(unsigned long dev_addr) | |
306 | { | |
307 | struct fb_info *info = (struct fb_info *) dev_addr; | |
308 | struct fbcon_ops *ops = info->fbcon_par; | |
309 | ||
310 | schedule_work(&info->queue); | |
311 | mod_timer(&ops->cursor_timer, jiffies + HZ/5); | |
312 | } | |
313 | ||
314 | #ifndef MODULE | |
315 | static int __init fb_console_setup(char *this_opt) | |
316 | { | |
317 | char *options; | |
318 | int i, j; | |
319 | ||
320 | if (!this_opt || !*this_opt) | |
321 | return 0; | |
322 | ||
323 | while ((options = strsep(&this_opt, ",")) != NULL) { | |
324 | if (!strncmp(options, "font:", 5)) | |
325 | strcpy(fontname, options + 5); | |
326 | ||
327 | if (!strncmp(options, "scrollback:", 11)) { | |
328 | options += 11; | |
329 | if (*options) { | |
330 | fbcon_softback_size = simple_strtoul(options, &options, 0); | |
331 | if (*options == 'k' || *options == 'K') { | |
332 | fbcon_softback_size *= 1024; | |
333 | options++; | |
334 | } | |
335 | if (*options != ',') | |
336 | return 0; | |
337 | options++; | |
338 | } else | |
339 | return 0; | |
340 | } | |
341 | ||
342 | if (!strncmp(options, "map:", 4)) { | |
343 | options += 4; | |
344 | if (*options) | |
345 | for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { | |
346 | if (!options[j]) | |
347 | j = 0; | |
348 | con2fb_map_boot[i] = | |
349 | (options[j++]-'0') % FB_MAX; | |
350 | } | |
351 | return 0; | |
352 | } | |
353 | ||
354 | if (!strncmp(options, "vc:", 3)) { | |
355 | options += 3; | |
356 | if (*options) | |
357 | first_fb_vc = simple_strtoul(options, &options, 10) - 1; | |
358 | if (first_fb_vc < 0) | |
359 | first_fb_vc = 0; | |
360 | if (*options++ == '-') | |
361 | last_fb_vc = simple_strtoul(options, &options, 10) - 1; | |
362 | fbcon_is_default = 0; | |
363 | } | |
364 | } | |
365 | return 0; | |
366 | } | |
367 | ||
368 | __setup("fbcon=", fb_console_setup); | |
369 | #endif | |
370 | ||
371 | static int search_fb_in_map(int idx) | |
372 | { | |
373 | int i, retval = 0; | |
374 | ||
375 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
376 | if (con2fb_map[i] == idx) | |
377 | retval = 1; | |
378 | } | |
379 | return retval; | |
380 | } | |
381 | ||
382 | static int search_for_mapped_con(void) | |
383 | { | |
384 | int i, retval = 0; | |
385 | ||
386 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
387 | if (con2fb_map[i] != -1) | |
388 | retval = 1; | |
389 | } | |
390 | return retval; | |
391 | } | |
392 | ||
393 | static int fbcon_takeover(int show_logo) | |
394 | { | |
395 | int err, i; | |
396 | ||
397 | if (!num_registered_fb) | |
398 | return -ENODEV; | |
399 | ||
400 | if (!show_logo) | |
401 | logo_shown = FBCON_LOGO_DONTSHOW; | |
402 | ||
403 | for (i = first_fb_vc; i <= last_fb_vc; i++) | |
404 | con2fb_map[i] = info_idx; | |
405 | ||
406 | err = take_over_console(&fb_con, first_fb_vc, last_fb_vc, | |
407 | fbcon_is_default); | |
408 | if (err) { | |
409 | for (i = first_fb_vc; i <= last_fb_vc; i++) { | |
410 | con2fb_map[i] = -1; | |
411 | } | |
412 | info_idx = -1; | |
413 | } | |
414 | ||
415 | return err; | |
416 | } | |
417 | ||
418 | static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, | |
419 | int cols, int rows, int new_cols, int new_rows) | |
420 | { | |
421 | /* Need to make room for the logo */ | |
422 | int cnt, erase = vc->vc_video_erase_char, step; | |
423 | unsigned short *save = NULL, *r, *q; | |
424 | ||
425 | /* | |
426 | * remove underline attribute from erase character | |
427 | * if black and white framebuffer. | |
428 | */ | |
429 | if (fb_get_color_depth(&info->var) == 1) | |
430 | erase &= ~0x400; | |
431 | logo_height = fb_prepare_logo(info); | |
432 | logo_lines = (logo_height + vc->vc_font.height - 1) / | |
433 | vc->vc_font.height; | |
434 | q = (unsigned short *) (vc->vc_origin + | |
435 | vc->vc_size_row * rows); | |
436 | step = logo_lines * cols; | |
437 | for (r = q - logo_lines * cols; r < q; r++) | |
438 | if (scr_readw(r) != vc->vc_video_erase_char) | |
439 | break; | |
440 | if (r != q && new_rows >= rows + logo_lines) { | |
441 | save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL); | |
442 | if (save) { | |
443 | int i = cols < new_cols ? cols : new_cols; | |
444 | scr_memsetw(save, erase, logo_lines * new_cols * 2); | |
445 | r = q - step; | |
446 | for (cnt = 0; cnt < logo_lines; cnt++, r += i) | |
447 | scr_memcpyw(save + cnt * new_cols, r, 2 * i); | |
448 | r = q; | |
449 | } | |
450 | } | |
451 | if (r == q) { | |
452 | /* We can scroll screen down */ | |
453 | r = q - step - cols; | |
454 | for (cnt = rows - logo_lines; cnt > 0; cnt--) { | |
455 | scr_memcpyw(r + step, r, vc->vc_size_row); | |
456 | r -= cols; | |
457 | } | |
458 | if (!save) { | |
459 | vc->vc_y += logo_lines; | |
460 | vc->vc_pos += logo_lines * vc->vc_size_row; | |
461 | } | |
462 | } | |
463 | scr_memsetw((unsigned short *) vc->vc_origin, | |
464 | erase, | |
465 | vc->vc_size_row * logo_lines); | |
466 | ||
467 | if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) { | |
468 | fbcon_clear_margins(vc, 0); | |
469 | update_screen(vc); | |
470 | } | |
471 | ||
472 | if (save) { | |
473 | q = (unsigned short *) (vc->vc_origin + | |
474 | vc->vc_size_row * | |
475 | rows); | |
476 | scr_memcpyw(q, save, logo_lines * new_cols * 2); | |
477 | vc->vc_y += logo_lines; | |
478 | vc->vc_pos += logo_lines * vc->vc_size_row; | |
479 | kfree(save); | |
480 | } | |
481 | ||
482 | if (logo_lines > vc->vc_bottom) { | |
483 | logo_shown = FBCON_LOGO_CANSHOW; | |
484 | printk(KERN_INFO | |
485 | "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); | |
486 | } else if (logo_shown != FBCON_LOGO_DONTSHOW) { | |
487 | logo_shown = FBCON_LOGO_DRAW; | |
488 | vc->vc_top = logo_lines; | |
489 | } | |
490 | } | |
491 | ||
492 | #ifdef CONFIG_FB_TILEBLITTING | |
493 | static void set_blitting_type(struct vc_data *vc, struct fb_info *info, | |
494 | struct display *p) | |
495 | { | |
496 | struct fbcon_ops *ops = info->fbcon_par; | |
497 | ||
498 | if ((info->flags & FBINFO_MISC_TILEBLITTING)) | |
499 | fbcon_set_tileops(vc, info, p, ops); | |
500 | else | |
501 | fbcon_set_bitops(ops); | |
502 | } | |
503 | #else | |
504 | static void set_blitting_type(struct vc_data *vc, struct fb_info *info, | |
505 | struct display *p) | |
506 | { | |
507 | struct fbcon_ops *ops = info->fbcon_par; | |
508 | ||
509 | info->flags &= ~FBINFO_MISC_TILEBLITTING; | |
510 | fbcon_set_bitops(ops); | |
511 | } | |
512 | #endif /* CONFIG_MISC_TILEBLITTING */ | |
513 | ||
514 | ||
515 | static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, | |
516 | int unit, int oldidx) | |
517 | { | |
518 | struct fbcon_ops *ops = NULL; | |
519 | int err = 0; | |
520 | ||
521 | if (!try_module_get(info->fbops->owner)) | |
522 | err = -ENODEV; | |
523 | ||
524 | if (!err && info->fbops->fb_open && | |
525 | info->fbops->fb_open(info, 0)) | |
526 | err = -ENODEV; | |
527 | ||
528 | if (!err) { | |
529 | ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL); | |
530 | if (!ops) | |
531 | err = -ENOMEM; | |
532 | } | |
533 | ||
534 | if (!err) { | |
535 | memset(ops, 0, sizeof(struct fbcon_ops)); | |
536 | info->fbcon_par = ops; | |
537 | set_blitting_type(vc, info, NULL); | |
538 | } | |
539 | ||
540 | if (err) { | |
541 | con2fb_map[unit] = oldidx; | |
542 | module_put(info->fbops->owner); | |
543 | } | |
544 | ||
545 | return err; | |
546 | } | |
547 | ||
548 | static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, | |
549 | struct fb_info *newinfo, int unit, | |
550 | int oldidx, int found) | |
551 | { | |
552 | struct fbcon_ops *ops = oldinfo->fbcon_par; | |
553 | int err = 0; | |
554 | ||
555 | if (oldinfo->fbops->fb_release && | |
556 | oldinfo->fbops->fb_release(oldinfo, 0)) { | |
557 | con2fb_map[unit] = oldidx; | |
558 | if (!found && newinfo->fbops->fb_release) | |
559 | newinfo->fbops->fb_release(newinfo, 0); | |
560 | if (!found) | |
561 | module_put(newinfo->fbops->owner); | |
562 | err = -ENODEV; | |
563 | } | |
564 | ||
565 | if (!err) { | |
566 | if (oldinfo->queue.func == fb_flashcursor) | |
567 | del_timer_sync(&ops->cursor_timer); | |
568 | ||
569 | kfree(ops->cursor_state.mask); | |
570 | kfree(ops->cursor_data); | |
571 | kfree(oldinfo->fbcon_par); | |
572 | oldinfo->fbcon_par = NULL; | |
573 | module_put(oldinfo->fbops->owner); | |
574 | } | |
575 | ||
576 | return err; | |
577 | } | |
578 | ||
579 | static void con2fb_init_newinfo(struct fb_info *info) | |
580 | { | |
581 | if (!info->queue.func || info->queue.func == fb_flashcursor) { | |
582 | struct fbcon_ops *ops = info->fbcon_par; | |
583 | ||
584 | if (!info->queue.func) | |
585 | INIT_WORK(&info->queue, fb_flashcursor, info); | |
586 | ||
587 | init_timer(&ops->cursor_timer); | |
588 | ops->cursor_timer.function = cursor_timer_handler; | |
589 | ops->cursor_timer.expires = jiffies + HZ / 5; | |
590 | ops->cursor_timer.data = (unsigned long ) info; | |
591 | add_timer(&ops->cursor_timer); | |
592 | } | |
593 | } | |
594 | ||
595 | static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, | |
596 | int unit, int show_logo) | |
597 | { | |
598 | struct fbcon_ops *ops = info->fbcon_par; | |
599 | ||
600 | ops->currcon = fg_console; | |
601 | ||
602 | if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) | |
603 | info->fbops->fb_set_par(info); | |
604 | ||
605 | ops->flags |= FBCON_FLAGS_INIT; | |
606 | ops->graphics = 0; | |
607 | ||
608 | if (vc) | |
609 | fbcon_set_disp(info, &info->var, vc); | |
610 | else | |
611 | fbcon_preset_disp(info, &info->var, unit); | |
612 | ||
613 | if (show_logo) { | |
614 | struct vc_data *fg_vc = vc_cons[fg_console].d; | |
615 | struct fb_info *fg_info = | |
616 | registered_fb[con2fb_map[fg_console]]; | |
617 | ||
618 | fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, | |
619 | fg_vc->vc_rows, fg_vc->vc_cols, | |
620 | fg_vc->vc_rows); | |
621 | } | |
622 | ||
623 | update_screen(vc_cons[fg_console].d); | |
624 | } | |
625 | ||
626 | /** | |
627 | * set_con2fb_map - map console to frame buffer device | |
628 | * @unit: virtual console number to map | |
629 | * @newidx: frame buffer index to map virtual console to | |
630 | * @user: user request | |
631 | * | |
632 | * Maps a virtual console @unit to a frame buffer device | |
633 | * @newidx. | |
634 | */ | |
635 | static int set_con2fb_map(int unit, int newidx, int user) | |
636 | { | |
637 | struct vc_data *vc = vc_cons[unit].d; | |
638 | int oldidx = con2fb_map[unit]; | |
639 | struct fb_info *info = registered_fb[newidx]; | |
640 | struct fb_info *oldinfo = NULL; | |
641 | int found, err = 0; | |
642 | ||
643 | if (oldidx == newidx) | |
644 | return 0; | |
645 | ||
646 | if (!info) | |
647 | err = -EINVAL; | |
648 | ||
649 | if (!err && !search_for_mapped_con()) { | |
650 | info_idx = newidx; | |
651 | return fbcon_takeover(0); | |
652 | } | |
653 | ||
654 | if (oldidx != -1) | |
655 | oldinfo = registered_fb[oldidx]; | |
656 | ||
657 | found = search_fb_in_map(newidx); | |
658 | ||
659 | acquire_console_sem(); | |
660 | con2fb_map[unit] = newidx; | |
661 | if (!err && !found) | |
662 | err = con2fb_acquire_newinfo(vc, info, unit, oldidx); | |
663 | ||
664 | ||
665 | /* | |
666 | * If old fb is not mapped to any of the consoles, | |
667 | * fbcon should release it. | |
668 | */ | |
669 | if (!err && oldinfo && !search_fb_in_map(oldidx)) | |
670 | err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, | |
671 | found); | |
672 | ||
673 | if (!err) { | |
674 | int show_logo = (fg_console == 0 && !user && | |
675 | logo_shown != FBCON_LOGO_DONTSHOW); | |
676 | ||
677 | if (!found) | |
678 | con2fb_init_newinfo(info); | |
679 | con2fb_map_boot[unit] = newidx; | |
680 | con2fb_init_display(vc, info, unit, show_logo); | |
681 | } | |
682 | ||
683 | release_console_sem(); | |
684 | return err; | |
685 | } | |
686 | ||
687 | /* | |
688 | * Low Level Operations | |
689 | */ | |
690 | /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */ | |
691 | static int var_to_display(struct display *disp, | |
692 | struct fb_var_screeninfo *var, | |
693 | struct fb_info *info) | |
694 | { | |
695 | disp->xres_virtual = var->xres_virtual; | |
696 | disp->yres_virtual = var->yres_virtual; | |
697 | disp->bits_per_pixel = var->bits_per_pixel; | |
698 | disp->grayscale = var->grayscale; | |
699 | disp->nonstd = var->nonstd; | |
700 | disp->accel_flags = var->accel_flags; | |
701 | disp->height = var->height; | |
702 | disp->width = var->width; | |
703 | disp->red = var->red; | |
704 | disp->green = var->green; | |
705 | disp->blue = var->blue; | |
706 | disp->transp = var->transp; | |
707 | disp->rotate = var->rotate; | |
708 | disp->mode = fb_match_mode(var, &info->modelist); | |
709 | if (disp->mode == NULL) | |
710 | /* This should not happen */ | |
711 | return -EINVAL; | |
712 | return 0; | |
713 | } | |
714 | ||
715 | static void display_to_var(struct fb_var_screeninfo *var, | |
716 | struct display *disp) | |
717 | { | |
718 | fb_videomode_to_var(var, disp->mode); | |
719 | var->xres_virtual = disp->xres_virtual; | |
720 | var->yres_virtual = disp->yres_virtual; | |
721 | var->bits_per_pixel = disp->bits_per_pixel; | |
722 | var->grayscale = disp->grayscale; | |
723 | var->nonstd = disp->nonstd; | |
724 | var->accel_flags = disp->accel_flags; | |
725 | var->height = disp->height; | |
726 | var->width = disp->width; | |
727 | var->red = disp->red; | |
728 | var->green = disp->green; | |
729 | var->blue = disp->blue; | |
730 | var->transp = disp->transp; | |
731 | var->rotate = disp->rotate; | |
732 | } | |
733 | ||
734 | static const char *fbcon_startup(void) | |
735 | { | |
736 | const char *display_desc = "frame buffer device"; | |
737 | struct display *p = &fb_display[fg_console]; | |
738 | struct vc_data *vc = vc_cons[fg_console].d; | |
739 | struct font_desc *font = NULL; | |
740 | struct module *owner; | |
741 | struct fb_info *info = NULL; | |
742 | struct fbcon_ops *ops; | |
743 | int rows, cols; | |
744 | int irqres; | |
745 | ||
746 | irqres = 1; | |
747 | /* | |
748 | * If num_registered_fb is zero, this is a call for the dummy part. | |
749 | * The frame buffer devices weren't initialized yet. | |
750 | */ | |
751 | if (!num_registered_fb || info_idx == -1) | |
752 | return display_desc; | |
753 | /* | |
754 | * Instead of blindly using registered_fb[0], we use info_idx, set by | |
755 | * fb_console_init(); | |
756 | */ | |
757 | info = registered_fb[info_idx]; | |
758 | if (!info) | |
759 | return NULL; | |
760 | ||
761 | owner = info->fbops->owner; | |
762 | if (!try_module_get(owner)) | |
763 | return NULL; | |
764 | if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { | |
765 | module_put(owner); | |
766 | return NULL; | |
767 | } | |
768 | ||
769 | ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL); | |
770 | if (!ops) { | |
771 | module_put(owner); | |
772 | return NULL; | |
773 | } | |
774 | ||
775 | memset(ops, 0, sizeof(struct fbcon_ops)); | |
776 | ops->currcon = -1; | |
777 | ops->graphics = 1; | |
778 | info->fbcon_par = ops; | |
779 | set_blitting_type(vc, info, NULL); | |
780 | ||
781 | if (info->fix.type != FB_TYPE_TEXT) { | |
782 | if (fbcon_softback_size) { | |
783 | if (!softback_buf) { | |
784 | softback_buf = | |
785 | (unsigned long) | |
786 | kmalloc(fbcon_softback_size, | |
787 | GFP_KERNEL); | |
788 | if (!softback_buf) { | |
789 | fbcon_softback_size = 0; | |
790 | softback_top = 0; | |
791 | } | |
792 | } | |
793 | } else { | |
794 | if (softback_buf) { | |
795 | kfree((void *) softback_buf); | |
796 | softback_buf = 0; | |
797 | softback_top = 0; | |
798 | } | |
799 | } | |
800 | if (softback_buf) | |
801 | softback_in = softback_top = softback_curr = | |
802 | softback_buf; | |
803 | softback_lines = 0; | |
804 | } | |
805 | ||
806 | /* Setup default font */ | |
807 | if (!p->fontdata) { | |
808 | if (!fontname[0] || !(font = find_font(fontname))) | |
809 | font = get_default_font(info->var.xres, | |
810 | info->var.yres); | |
811 | vc->vc_font.width = font->width; | |
812 | vc->vc_font.height = font->height; | |
813 | vc->vc_font.data = p->fontdata = font->data; | |
814 | vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ | |
815 | } | |
816 | ||
817 | cols = info->var.xres / vc->vc_font.width; | |
818 | rows = info->var.yres / vc->vc_font.height; | |
819 | vc_resize(vc, cols, rows); | |
820 | ||
821 | DPRINTK("mode: %s\n", info->fix.id); | |
822 | DPRINTK("visual: %d\n", info->fix.visual); | |
823 | DPRINTK("res: %dx%d-%d\n", info->var.xres, | |
824 | info->var.yres, | |
825 | info->var.bits_per_pixel); | |
826 | ||
827 | #ifdef CONFIG_ATARI | |
828 | if (MACH_IS_ATARI) { | |
829 | cursor_blink_rate = ATARI_CURSOR_BLINK_RATE; | |
830 | irqres = | |
831 | request_irq(IRQ_AUTO_4, fb_vbl_handler, | |
832 | IRQ_TYPE_PRIO, "framebuffer vbl", | |
833 | info); | |
834 | } | |
835 | #endif /* CONFIG_ATARI */ | |
836 | ||
837 | #ifdef CONFIG_MAC | |
838 | /* | |
839 | * On a Macintoy, the VBL interrupt may or may not be active. | |
840 | * As interrupt based cursor is more reliable and race free, we | |
841 | * probe for VBL interrupts. | |
842 | */ | |
843 | if (MACH_IS_MAC) { | |
844 | int ct = 0; | |
845 | /* | |
846 | * Probe for VBL: set temp. handler ... | |
847 | */ | |
848 | irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0, | |
849 | "framebuffer vbl", info); | |
850 | vbl_detected = 0; | |
851 | ||
852 | /* | |
853 | * ... and spin for 20 ms ... | |
854 | */ | |
855 | while (!vbl_detected && ++ct < 1000) | |
856 | udelay(20); | |
857 | ||
858 | if (ct == 1000) | |
859 | printk | |
860 | ("fbcon_startup: No VBL detected, using timer based cursor.\n"); | |
861 | ||
862 | free_irq(IRQ_MAC_VBL, fb_vbl_detect); | |
863 | ||
864 | if (vbl_detected) { | |
865 | /* | |
866 | * interrupt based cursor ok | |
867 | */ | |
868 | cursor_blink_rate = MAC_CURSOR_BLINK_RATE; | |
869 | irqres = | |
870 | request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0, | |
871 | "framebuffer vbl", info); | |
872 | } else { | |
873 | /* | |
874 | * VBL not detected: fall through, use timer based cursor | |
875 | */ | |
876 | irqres = 1; | |
877 | } | |
878 | } | |
879 | #endif /* CONFIG_MAC */ | |
880 | ||
881 | #if defined(__arm__) && defined(IRQ_VSYNCPULSE) | |
882 | cursor_blink_rate = ARM_CURSOR_BLINK_RATE; | |
883 | irqres = request_irq(IRQ_VSYNCPULSE, fb_vbl_handler, SA_SHIRQ, | |
884 | "framebuffer vbl", info); | |
885 | #endif | |
886 | /* Initialize the work queue. If the driver provides its | |
887 | * own work queue this means it will use something besides | |
888 | * default timer to flash the cursor. */ | |
889 | if (!info->queue.func) { | |
890 | INIT_WORK(&info->queue, fb_flashcursor, info); | |
891 | ||
892 | init_timer(&ops->cursor_timer); | |
893 | ops->cursor_timer.function = cursor_timer_handler; | |
894 | ops->cursor_timer.expires = jiffies + HZ / 5; | |
895 | ops->cursor_timer.data = (unsigned long ) info; | |
896 | add_timer(&ops->cursor_timer); | |
897 | } | |
898 | return display_desc; | |
899 | } | |
900 | ||
901 | static void fbcon_init(struct vc_data *vc, int init) | |
902 | { | |
903 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
904 | struct fbcon_ops *ops; | |
905 | struct vc_data **default_mode = vc->vc_display_fg; | |
906 | struct vc_data *svc = *default_mode; | |
907 | struct display *t, *p = &fb_display[vc->vc_num]; | |
908 | int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; | |
909 | int cap = info->flags; | |
910 | ||
911 | if (info_idx == -1 || info == NULL) | |
912 | return; | |
913 | if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || | |
914 | (info->fix.type == FB_TYPE_TEXT)) | |
915 | logo = 0; | |
916 | ||
917 | info->var.xoffset = info->var.yoffset = p->yscroll = 0; /* reset wrap/pan */ | |
918 | ||
919 | if (var_to_display(p, &info->var, info)) | |
920 | return; | |
921 | ||
922 | /* If we are not the first console on this | |
923 | fb, copy the font from that console */ | |
924 | t = &fb_display[svc->vc_num]; | |
925 | if (!vc->vc_font.data) { | |
926 | vc->vc_font.data = p->fontdata = t->fontdata; | |
927 | vc->vc_font.width = (*default_mode)->vc_font.width; | |
928 | vc->vc_font.height = (*default_mode)->vc_font.height; | |
929 | p->userfont = t->userfont; | |
930 | if (p->userfont) | |
931 | REFCOUNT(p->fontdata)++; | |
932 | } | |
933 | if (p->userfont) | |
934 | charcnt = FNTCHARCNT(p->fontdata); | |
935 | vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1); | |
936 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; | |
937 | if (charcnt == 256) { | |
938 | vc->vc_hi_font_mask = 0; | |
939 | } else { | |
940 | vc->vc_hi_font_mask = 0x100; | |
941 | if (vc->vc_can_do_color) | |
942 | vc->vc_complement_mask <<= 1; | |
943 | } | |
944 | ||
945 | if (!*svc->vc_uni_pagedir_loc) | |
946 | con_set_default_unimap(svc); | |
947 | if (!*vc->vc_uni_pagedir_loc) | |
948 | con_copy_unimap(vc, svc); | |
949 | ||
950 | cols = vc->vc_cols; | |
951 | rows = vc->vc_rows; | |
952 | new_cols = info->var.xres / vc->vc_font.width; | |
953 | new_rows = info->var.yres / vc->vc_font.height; | |
954 | vc_resize(vc, new_cols, new_rows); | |
955 | ||
956 | ops = info->fbcon_par; | |
957 | /* | |
958 | * We must always set the mode. The mode of the previous console | |
959 | * driver could be in the same resolution but we are using different | |
960 | * hardware so we have to initialize the hardware. | |
961 | * | |
962 | * We need to do it in fbcon_init() to prevent screen corruption. | |
963 | */ | |
964 | if (CON_IS_VISIBLE(vc)) { | |
965 | if (info->fbops->fb_set_par && | |
966 | !(ops->flags & FBCON_FLAGS_INIT)) | |
967 | info->fbops->fb_set_par(info); | |
968 | ops->flags |= FBCON_FLAGS_INIT; | |
969 | } | |
970 | ||
971 | ops->graphics = 0; | |
972 | ||
973 | if ((cap & FBINFO_HWACCEL_COPYAREA) && | |
974 | !(cap & FBINFO_HWACCEL_DISABLED)) | |
975 | p->scrollmode = SCROLL_MOVE; | |
976 | else /* default to something safe */ | |
977 | p->scrollmode = SCROLL_REDRAW; | |
978 | ||
979 | /* | |
980 | * ++guenther: console.c:vc_allocate() relies on initializing | |
981 | * vc_{cols,rows}, but we must not set those if we are only | |
982 | * resizing the console. | |
983 | */ | |
984 | if (!init) { | |
985 | vc->vc_cols = new_cols; | |
986 | vc->vc_rows = new_rows; | |
987 | } | |
988 | ||
989 | if (logo) | |
990 | fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); | |
991 | ||
992 | if (vc == svc && softback_buf) { | |
993 | int l = fbcon_softback_size / vc->vc_size_row; | |
994 | if (l > 5) | |
995 | softback_end = softback_buf + l * vc->vc_size_row; | |
996 | else { | |
997 | /* Smaller scrollback makes no sense, and 0 would screw | |
998 | the operation totally */ | |
999 | softback_top = 0; | |
1000 | } | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | static void fbcon_deinit(struct vc_data *vc) | |
1005 | { | |
1006 | struct display *p = &fb_display[vc->vc_num]; | |
1007 | ||
1008 | if (info_idx != -1) | |
1009 | return; | |
1010 | fbcon_free_font(p); | |
1011 | } | |
1012 | ||
1013 | /* ====================================================================== */ | |
1014 | ||
1015 | /* fbcon_XXX routines - interface used by the world | |
1016 | * | |
1017 | * This system is now divided into two levels because of complications | |
1018 | * caused by hardware scrolling. Top level functions: | |
1019 | * | |
1020 | * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() | |
1021 | * | |
1022 | * handles y values in range [0, scr_height-1] that correspond to real | |
1023 | * screen positions. y_wrap shift means that first line of bitmap may be | |
1024 | * anywhere on this display. These functions convert lineoffsets to | |
1025 | * bitmap offsets and deal with the wrap-around case by splitting blits. | |
1026 | * | |
1027 | * fbcon_bmove_physical_8() -- These functions fast implementations | |
1028 | * fbcon_clear_physical_8() -- of original fbcon_XXX fns. | |
1029 | * fbcon_putc_physical_8() -- (font width != 8) may be added later | |
1030 | * | |
1031 | * WARNING: | |
1032 | * | |
1033 | * At the moment fbcon_putc() cannot blit across vertical wrap boundary | |
1034 | * Implies should only really hardware scroll in rows. Only reason for | |
1035 | * restriction is simplicity & efficiency at the moment. | |
1036 | */ | |
1037 | ||
1038 | static __inline__ int real_y(struct display *p, int ypos) | |
1039 | { | |
1040 | int rows = p->vrows; | |
1041 | ||
1042 | ypos += p->yscroll; | |
1043 | return ypos < rows ? ypos : ypos - rows; | |
1044 | } | |
1045 | ||
1046 | ||
1047 | static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, | |
1048 | int width) | |
1049 | { | |
1050 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1051 | struct fbcon_ops *ops = info->fbcon_par; | |
1052 | ||
1053 | struct display *p = &fb_display[vc->vc_num]; | |
1054 | u_int y_break; | |
1055 | ||
1056 | if (fbcon_is_inactive(vc, info)) | |
1057 | return; | |
1058 | ||
1059 | if (!height || !width) | |
1060 | return; | |
1061 | ||
1062 | /* Split blits that cross physical y_wrap boundary */ | |
1063 | ||
1064 | y_break = p->vrows - p->yscroll; | |
1065 | if (sy < y_break && sy + height - 1 >= y_break) { | |
1066 | u_int b = y_break - sy; | |
1067 | ops->clear(vc, info, real_y(p, sy), sx, b, width); | |
1068 | ops->clear(vc, info, real_y(p, sy + b), sx, height - b, | |
1069 | width); | |
1070 | } else | |
1071 | ops->clear(vc, info, real_y(p, sy), sx, height, width); | |
1072 | } | |
1073 | ||
1074 | static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, | |
1075 | int count, int ypos, int xpos) | |
1076 | { | |
1077 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1078 | struct display *p = &fb_display[vc->vc_num]; | |
1079 | struct fbcon_ops *ops = info->fbcon_par; | |
1080 | ||
1081 | if (!fbcon_is_inactive(vc, info)) | |
1082 | ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, | |
1083 | get_color(vc, info, scr_readw(s), 1), | |
1084 | get_color(vc, info, scr_readw(s), 0)); | |
1085 | } | |
1086 | ||
1087 | static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) | |
1088 | { | |
1089 | unsigned short chr; | |
1090 | ||
1091 | scr_writew(c, &chr); | |
1092 | fbcon_putcs(vc, &chr, 1, ypos, xpos); | |
1093 | } | |
1094 | ||
1095 | static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) | |
1096 | { | |
1097 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1098 | struct fbcon_ops *ops = info->fbcon_par; | |
1099 | ||
1100 | if (!fbcon_is_inactive(vc, info)) | |
1101 | ops->clear_margins(vc, info, bottom_only); | |
1102 | } | |
1103 | ||
1104 | static void fbcon_cursor(struct vc_data *vc, int mode) | |
1105 | { | |
1106 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1107 | struct fbcon_ops *ops = info->fbcon_par; | |
1108 | struct display *p = &fb_display[vc->vc_num]; | |
1109 | int y; | |
1110 | int c = scr_readw((u16 *) vc->vc_pos); | |
1111 | ||
1112 | if (fbcon_is_inactive(vc, info)) | |
1113 | return; | |
1114 | ||
1115 | ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; | |
1116 | if (mode & CM_SOFTBACK) { | |
1117 | mode &= ~CM_SOFTBACK; | |
1118 | y = softback_lines; | |
1119 | } else { | |
1120 | if (softback_lines) | |
1121 | fbcon_set_origin(vc); | |
1122 | y = 0; | |
1123 | } | |
1124 | ||
1125 | ops->cursor(vc, info, p, mode, y, get_color(vc, info, c, 1), | |
1126 | get_color(vc, info, c, 0)); | |
1127 | vbl_cursor_cnt = CURSOR_DRAW_DELAY; | |
1128 | } | |
1129 | ||
1130 | static int scrollback_phys_max = 0; | |
1131 | static int scrollback_max = 0; | |
1132 | static int scrollback_current = 0; | |
1133 | ||
1134 | static int update_var(int con, struct fb_info *info) | |
1135 | { | |
1136 | if (con == ((struct fbcon_ops *)info->fbcon_par)->currcon) | |
1137 | return fb_pan_display(info, &info->var); | |
1138 | return 0; | |
1139 | } | |
1140 | ||
1141 | /* | |
1142 | * If no vc is existent yet, just set struct display | |
1143 | */ | |
1144 | static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
1145 | int unit) | |
1146 | { | |
1147 | struct display *p = &fb_display[unit]; | |
1148 | struct display *t = &fb_display[fg_console]; | |
1149 | ||
1150 | var->xoffset = var->yoffset = p->yscroll = 0; | |
1151 | if (var_to_display(p, var, info)) | |
1152 | return; | |
1153 | ||
1154 | p->fontdata = t->fontdata; | |
1155 | p->userfont = t->userfont; | |
1156 | if (p->userfont) | |
1157 | REFCOUNT(p->fontdata)++; | |
1158 | } | |
1159 | ||
1160 | static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
1161 | struct vc_data *vc) | |
1162 | { | |
1163 | struct display *p = &fb_display[vc->vc_num], *t; | |
1164 | struct vc_data **default_mode = vc->vc_display_fg; | |
1165 | struct vc_data *svc = *default_mode; | |
1166 | int rows, cols, charcnt = 256; | |
1167 | ||
1168 | var->xoffset = var->yoffset = p->yscroll = 0; | |
1169 | if (var_to_display(p, var, info)) | |
1170 | return; | |
1171 | t = &fb_display[svc->vc_num]; | |
1172 | if (!vc->vc_font.data) { | |
1173 | vc->vc_font.data = p->fontdata = t->fontdata; | |
1174 | vc->vc_font.width = (*default_mode)->vc_font.width; | |
1175 | vc->vc_font.height = (*default_mode)->vc_font.height; | |
1176 | p->userfont = t->userfont; | |
1177 | if (p->userfont) | |
1178 | REFCOUNT(p->fontdata)++; | |
1179 | } | |
1180 | if (p->userfont) | |
1181 | charcnt = FNTCHARCNT(p->fontdata); | |
1182 | ||
1183 | vc->vc_can_do_color = (fb_get_color_depth(var) != 1); | |
1184 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; | |
1185 | if (charcnt == 256) { | |
1186 | vc->vc_hi_font_mask = 0; | |
1187 | } else { | |
1188 | vc->vc_hi_font_mask = 0x100; | |
1189 | if (vc->vc_can_do_color) | |
1190 | vc->vc_complement_mask <<= 1; | |
1191 | } | |
1192 | ||
1193 | if (!*svc->vc_uni_pagedir_loc) | |
1194 | con_set_default_unimap(svc); | |
1195 | if (!*vc->vc_uni_pagedir_loc) | |
1196 | con_copy_unimap(vc, svc); | |
1197 | ||
1198 | cols = var->xres / vc->vc_font.width; | |
1199 | rows = var->yres / vc->vc_font.height; | |
1200 | vc_resize(vc, cols, rows); | |
1201 | if (CON_IS_VISIBLE(vc)) { | |
1202 | update_screen(vc); | |
1203 | if (softback_buf) { | |
1204 | int l = fbcon_softback_size / vc->vc_size_row; | |
1205 | ||
1206 | if (l > 5) | |
1207 | softback_end = softback_buf + l * | |
1208 | vc->vc_size_row; | |
1209 | else { | |
1210 | /* Smaller scrollback makes no sense, and 0 | |
1211 | would screw the operation totally */ | |
1212 | softback_top = 0; | |
1213 | } | |
1214 | } | |
1215 | } | |
1216 | } | |
1217 | ||
1218 | static __inline__ void ywrap_up(struct vc_data *vc, int count) | |
1219 | { | |
1220 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1221 | struct display *p = &fb_display[vc->vc_num]; | |
1222 | ||
1223 | p->yscroll += count; | |
1224 | if (p->yscroll >= p->vrows) /* Deal with wrap */ | |
1225 | p->yscroll -= p->vrows; | |
1226 | info->var.xoffset = 0; | |
1227 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1228 | info->var.vmode |= FB_VMODE_YWRAP; | |
1229 | update_var(vc->vc_num, info); | |
1230 | scrollback_max += count; | |
1231 | if (scrollback_max > scrollback_phys_max) | |
1232 | scrollback_max = scrollback_phys_max; | |
1233 | scrollback_current = 0; | |
1234 | } | |
1235 | ||
1236 | static __inline__ void ywrap_down(struct vc_data *vc, int count) | |
1237 | { | |
1238 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1239 | struct display *p = &fb_display[vc->vc_num]; | |
1240 | ||
1241 | p->yscroll -= count; | |
1242 | if (p->yscroll < 0) /* Deal with wrap */ | |
1243 | p->yscroll += p->vrows; | |
1244 | info->var.xoffset = 0; | |
1245 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1246 | info->var.vmode |= FB_VMODE_YWRAP; | |
1247 | update_var(vc->vc_num, info); | |
1248 | scrollback_max -= count; | |
1249 | if (scrollback_max < 0) | |
1250 | scrollback_max = 0; | |
1251 | scrollback_current = 0; | |
1252 | } | |
1253 | ||
1254 | static __inline__ void ypan_up(struct vc_data *vc, int count) | |
1255 | { | |
1256 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1257 | struct display *p = &fb_display[vc->vc_num]; | |
1258 | struct fbcon_ops *ops = info->fbcon_par; | |
1259 | ||
1260 | p->yscroll += count; | |
1261 | if (p->yscroll > p->vrows - vc->vc_rows) { | |
1262 | ops->bmove(vc, info, p->vrows - vc->vc_rows, | |
1263 | 0, 0, 0, vc->vc_rows, vc->vc_cols); | |
1264 | p->yscroll -= p->vrows - vc->vc_rows; | |
1265 | } | |
1266 | info->var.xoffset = 0; | |
1267 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1268 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
1269 | update_var(vc->vc_num, info); | |
1270 | fbcon_clear_margins(vc, 1); | |
1271 | scrollback_max += count; | |
1272 | if (scrollback_max > scrollback_phys_max) | |
1273 | scrollback_max = scrollback_phys_max; | |
1274 | scrollback_current = 0; | |
1275 | } | |
1276 | ||
1277 | static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) | |
1278 | { | |
1279 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1280 | struct display *p = &fb_display[vc->vc_num]; | |
1281 | int redraw = 0; | |
1282 | ||
1283 | p->yscroll += count; | |
1284 | if (p->yscroll > p->vrows - vc->vc_rows) { | |
1285 | p->yscroll -= p->vrows - vc->vc_rows; | |
1286 | redraw = 1; | |
1287 | } | |
1288 | ||
1289 | info->var.xoffset = 0; | |
1290 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1291 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
1292 | if (redraw) | |
1293 | fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); | |
1294 | update_var(vc->vc_num, info); | |
1295 | fbcon_clear_margins(vc, 1); | |
1296 | scrollback_max += count; | |
1297 | if (scrollback_max > scrollback_phys_max) | |
1298 | scrollback_max = scrollback_phys_max; | |
1299 | scrollback_current = 0; | |
1300 | } | |
1301 | ||
1302 | static __inline__ void ypan_down(struct vc_data *vc, int count) | |
1303 | { | |
1304 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1305 | struct display *p = &fb_display[vc->vc_num]; | |
1306 | struct fbcon_ops *ops = info->fbcon_par; | |
1307 | ||
1308 | p->yscroll -= count; | |
1309 | if (p->yscroll < 0) { | |
1310 | ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, | |
1311 | 0, vc->vc_rows, vc->vc_cols); | |
1312 | p->yscroll += p->vrows - vc->vc_rows; | |
1313 | } | |
1314 | info->var.xoffset = 0; | |
1315 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1316 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
1317 | update_var(vc->vc_num, info); | |
1318 | fbcon_clear_margins(vc, 1); | |
1319 | scrollback_max -= count; | |
1320 | if (scrollback_max < 0) | |
1321 | scrollback_max = 0; | |
1322 | scrollback_current = 0; | |
1323 | } | |
1324 | ||
1325 | static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) | |
1326 | { | |
1327 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1328 | struct display *p = &fb_display[vc->vc_num]; | |
1329 | int redraw = 0; | |
1330 | ||
1331 | p->yscroll -= count; | |
1332 | if (p->yscroll < 0) { | |
1333 | p->yscroll += p->vrows - vc->vc_rows; | |
1334 | redraw = 1; | |
1335 | } | |
1336 | info->var.xoffset = 0; | |
1337 | info->var.yoffset = p->yscroll * vc->vc_font.height; | |
1338 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
1339 | if (redraw) | |
1340 | fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); | |
1341 | update_var(vc->vc_num, info); | |
1342 | fbcon_clear_margins(vc, 1); | |
1343 | scrollback_max -= count; | |
1344 | if (scrollback_max < 0) | |
1345 | scrollback_max = 0; | |
1346 | scrollback_current = 0; | |
1347 | } | |
1348 | ||
1349 | static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, | |
1350 | long delta) | |
1351 | { | |
1352 | int count = vc->vc_rows; | |
1353 | unsigned short *d, *s; | |
1354 | unsigned long n; | |
1355 | int line = 0; | |
1356 | ||
1357 | d = (u16 *) softback_curr; | |
1358 | if (d == (u16 *) softback_in) | |
1359 | d = (u16 *) vc->vc_origin; | |
1360 | n = softback_curr + delta * vc->vc_size_row; | |
1361 | softback_lines -= delta; | |
1362 | if (delta < 0) { | |
1363 | if (softback_curr < softback_top && n < softback_buf) { | |
1364 | n += softback_end - softback_buf; | |
1365 | if (n < softback_top) { | |
1366 | softback_lines -= | |
1367 | (softback_top - n) / vc->vc_size_row; | |
1368 | n = softback_top; | |
1369 | } | |
1370 | } else if (softback_curr >= softback_top | |
1371 | && n < softback_top) { | |
1372 | softback_lines -= | |
1373 | (softback_top - n) / vc->vc_size_row; | |
1374 | n = softback_top; | |
1375 | } | |
1376 | } else { | |
1377 | if (softback_curr > softback_in && n >= softback_end) { | |
1378 | n += softback_buf - softback_end; | |
1379 | if (n > softback_in) { | |
1380 | n = softback_in; | |
1381 | softback_lines = 0; | |
1382 | } | |
1383 | } else if (softback_curr <= softback_in && n > softback_in) { | |
1384 | n = softback_in; | |
1385 | softback_lines = 0; | |
1386 | } | |
1387 | } | |
1388 | if (n == softback_curr) | |
1389 | return; | |
1390 | softback_curr = n; | |
1391 | s = (u16 *) softback_curr; | |
1392 | if (s == (u16 *) softback_in) | |
1393 | s = (u16 *) vc->vc_origin; | |
1394 | while (count--) { | |
1395 | unsigned short *start; | |
1396 | unsigned short *le; | |
1397 | unsigned short c; | |
1398 | int x = 0; | |
1399 | unsigned short attr = 1; | |
1400 | ||
1401 | start = s; | |
1402 | le = advance_row(s, 1); | |
1403 | do { | |
1404 | c = scr_readw(s); | |
1405 | if (attr != (c & 0xff00)) { | |
1406 | attr = c & 0xff00; | |
1407 | if (s > start) { | |
1408 | fbcon_putcs(vc, start, s - start, | |
1409 | line, x); | |
1410 | x += s - start; | |
1411 | start = s; | |
1412 | } | |
1413 | } | |
1414 | if (c == scr_readw(d)) { | |
1415 | if (s > start) { | |
1416 | fbcon_putcs(vc, start, s - start, | |
1417 | line, x); | |
1418 | x += s - start + 1; | |
1419 | start = s + 1; | |
1420 | } else { | |
1421 | x++; | |
1422 | start++; | |
1423 | } | |
1424 | } | |
1425 | s++; | |
1426 | d++; | |
1427 | } while (s < le); | |
1428 | if (s > start) | |
1429 | fbcon_putcs(vc, start, s - start, line, x); | |
1430 | line++; | |
1431 | if (d == (u16 *) softback_end) | |
1432 | d = (u16 *) softback_buf; | |
1433 | if (d == (u16 *) softback_in) | |
1434 | d = (u16 *) vc->vc_origin; | |
1435 | if (s == (u16 *) softback_end) | |
1436 | s = (u16 *) softback_buf; | |
1437 | if (s == (u16 *) softback_in) | |
1438 | s = (u16 *) vc->vc_origin; | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | static void fbcon_redraw_move(struct vc_data *vc, struct display *p, | |
1443 | int line, int count, int dy) | |
1444 | { | |
1445 | unsigned short *s = (unsigned short *) | |
1446 | (vc->vc_origin + vc->vc_size_row * line); | |
1447 | ||
1448 | while (count--) { | |
1449 | unsigned short *start = s; | |
1450 | unsigned short *le = advance_row(s, 1); | |
1451 | unsigned short c; | |
1452 | int x = 0; | |
1453 | unsigned short attr = 1; | |
1454 | ||
1455 | do { | |
1456 | c = scr_readw(s); | |
1457 | if (attr != (c & 0xff00)) { | |
1458 | attr = c & 0xff00; | |
1459 | if (s > start) { | |
1460 | fbcon_putcs(vc, start, s - start, | |
1461 | dy, x); | |
1462 | x += s - start; | |
1463 | start = s; | |
1464 | } | |
1465 | } | |
1466 | console_conditional_schedule(); | |
1467 | s++; | |
1468 | } while (s < le); | |
1469 | if (s > start) | |
1470 | fbcon_putcs(vc, start, s - start, dy, x); | |
1471 | console_conditional_schedule(); | |
1472 | dy++; | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | static void fbcon_redraw(struct vc_data *vc, struct display *p, | |
1477 | int line, int count, int offset) | |
1478 | { | |
1479 | unsigned short *d = (unsigned short *) | |
1480 | (vc->vc_origin + vc->vc_size_row * line); | |
1481 | unsigned short *s = d + offset; | |
1482 | ||
1483 | while (count--) { | |
1484 | unsigned short *start = s; | |
1485 | unsigned short *le = advance_row(s, 1); | |
1486 | unsigned short c; | |
1487 | int x = 0; | |
1488 | unsigned short attr = 1; | |
1489 | ||
1490 | do { | |
1491 | c = scr_readw(s); | |
1492 | if (attr != (c & 0xff00)) { | |
1493 | attr = c & 0xff00; | |
1494 | if (s > start) { | |
1495 | fbcon_putcs(vc, start, s - start, | |
1496 | line, x); | |
1497 | x += s - start; | |
1498 | start = s; | |
1499 | } | |
1500 | } | |
1501 | if (c == scr_readw(d)) { | |
1502 | if (s > start) { | |
1503 | fbcon_putcs(vc, start, s - start, | |
1504 | line, x); | |
1505 | x += s - start + 1; | |
1506 | start = s + 1; | |
1507 | } else { | |
1508 | x++; | |
1509 | start++; | |
1510 | } | |
1511 | } | |
1512 | scr_writew(c, d); | |
1513 | console_conditional_schedule(); | |
1514 | s++; | |
1515 | d++; | |
1516 | } while (s < le); | |
1517 | if (s > start) | |
1518 | fbcon_putcs(vc, start, s - start, line, x); | |
1519 | console_conditional_schedule(); | |
1520 | if (offset > 0) | |
1521 | line++; | |
1522 | else { | |
1523 | line--; | |
1524 | /* NOTE: We subtract two lines from these pointers */ | |
1525 | s -= vc->vc_size_row; | |
1526 | d -= vc->vc_size_row; | |
1527 | } | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | static inline void fbcon_softback_note(struct vc_data *vc, int t, | |
1532 | int count) | |
1533 | { | |
1534 | unsigned short *p; | |
1535 | ||
1536 | if (vc->vc_num != fg_console) | |
1537 | return; | |
1538 | p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); | |
1539 | ||
1540 | while (count) { | |
1541 | scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); | |
1542 | count--; | |
1543 | p = advance_row(p, 1); | |
1544 | softback_in += vc->vc_size_row; | |
1545 | if (softback_in == softback_end) | |
1546 | softback_in = softback_buf; | |
1547 | if (softback_in == softback_top) { | |
1548 | softback_top += vc->vc_size_row; | |
1549 | if (softback_top == softback_end) | |
1550 | softback_top = softback_buf; | |
1551 | } | |
1552 | } | |
1553 | softback_curr = softback_in; | |
1554 | } | |
1555 | ||
1556 | static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir, | |
1557 | int count) | |
1558 | { | |
1559 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1560 | struct display *p = &fb_display[vc->vc_num]; | |
1561 | struct fbcon_ops *ops = info->fbcon_par; | |
1562 | int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; | |
1563 | ||
1564 | if (fbcon_is_inactive(vc, info)) | |
1565 | return -EINVAL; | |
1566 | ||
1567 | fbcon_cursor(vc, CM_ERASE); | |
1568 | ||
1569 | /* | |
1570 | * ++Geert: Only use ywrap/ypan if the console is in text mode | |
1571 | * ++Andrew: Only use ypan on hardware text mode when scrolling the | |
1572 | * whole screen (prevents flicker). | |
1573 | */ | |
1574 | ||
1575 | switch (dir) { | |
1576 | case SM_UP: | |
1577 | if (count > vc->vc_rows) /* Maximum realistic size */ | |
1578 | count = vc->vc_rows; | |
1579 | if (softback_top) | |
1580 | fbcon_softback_note(vc, t, count); | |
1581 | if (logo_shown >= 0) | |
1582 | goto redraw_up; | |
1583 | switch (p->scrollmode) { | |
1584 | case SCROLL_MOVE: | |
1585 | ops->bmove(vc, info, t + count, 0, t, 0, | |
1586 | b - t - count, vc->vc_cols); | |
1587 | ops->clear(vc, info, b - count, 0, count, | |
1588 | vc->vc_cols); | |
1589 | break; | |
1590 | ||
1591 | case SCROLL_WRAP_MOVE: | |
1592 | if (b - t - count > 3 * vc->vc_rows >> 2) { | |
1593 | if (t > 0) | |
1594 | fbcon_bmove(vc, 0, 0, count, 0, t, | |
1595 | vc->vc_cols); | |
1596 | ywrap_up(vc, count); | |
1597 | if (vc->vc_rows - b > 0) | |
1598 | fbcon_bmove(vc, b - count, 0, b, 0, | |
1599 | vc->vc_rows - b, | |
1600 | vc->vc_cols); | |
1601 | } else if (info->flags & FBINFO_READS_FAST) | |
1602 | fbcon_bmove(vc, t + count, 0, t, 0, | |
1603 | b - t - count, vc->vc_cols); | |
1604 | else | |
1605 | goto redraw_up; | |
1606 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1607 | break; | |
1608 | ||
1609 | case SCROLL_PAN_REDRAW: | |
1610 | if ((p->yscroll + count <= | |
1611 | 2 * (p->vrows - vc->vc_rows)) | |
1612 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1613 | || (scroll_partial | |
1614 | && (b - t - count > | |
1615 | 3 * vc->vc_rows >> 2)))) { | |
1616 | if (t > 0) | |
1617 | fbcon_redraw_move(vc, p, 0, t, count); | |
1618 | ypan_up_redraw(vc, t, count); | |
1619 | if (vc->vc_rows - b > 0) | |
1620 | fbcon_redraw_move(vc, p, b - count, | |
1621 | vc->vc_rows - b, b); | |
1622 | } else | |
1623 | fbcon_redraw_move(vc, p, t + count, b - t - count, t); | |
1624 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1625 | break; | |
1626 | ||
1627 | case SCROLL_PAN_MOVE: | |
1628 | if ((p->yscroll + count <= | |
1629 | 2 * (p->vrows - vc->vc_rows)) | |
1630 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1631 | || (scroll_partial | |
1632 | && (b - t - count > | |
1633 | 3 * vc->vc_rows >> 2)))) { | |
1634 | if (t > 0) | |
1635 | fbcon_bmove(vc, 0, 0, count, 0, t, | |
1636 | vc->vc_cols); | |
1637 | ypan_up(vc, count); | |
1638 | if (vc->vc_rows - b > 0) | |
1639 | fbcon_bmove(vc, b - count, 0, b, 0, | |
1640 | vc->vc_rows - b, | |
1641 | vc->vc_cols); | |
1642 | } else if (info->flags & FBINFO_READS_FAST) | |
1643 | fbcon_bmove(vc, t + count, 0, t, 0, | |
1644 | b - t - count, vc->vc_cols); | |
1645 | else | |
1646 | goto redraw_up; | |
1647 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1648 | break; | |
1649 | ||
1650 | case SCROLL_REDRAW: | |
1651 | redraw_up: | |
1652 | fbcon_redraw(vc, p, t, b - t - count, | |
1653 | count * vc->vc_cols); | |
1654 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1655 | scr_memsetw((unsigned short *) (vc->vc_origin + | |
1656 | vc->vc_size_row * | |
1657 | (b - count)), | |
1658 | vc->vc_video_erase_char, | |
1659 | vc->vc_size_row * count); | |
1660 | return 1; | |
1661 | } | |
1662 | break; | |
1663 | ||
1664 | case SM_DOWN: | |
1665 | if (count > vc->vc_rows) /* Maximum realistic size */ | |
1666 | count = vc->vc_rows; | |
1667 | switch (p->scrollmode) { | |
1668 | case SCROLL_MOVE: | |
1669 | ops->bmove(vc, info, t, 0, t + count, 0, | |
1670 | b - t - count, vc->vc_cols); | |
1671 | ops->clear(vc, info, t, 0, count, vc->vc_cols); | |
1672 | break; | |
1673 | ||
1674 | case SCROLL_WRAP_MOVE: | |
1675 | if (b - t - count > 3 * vc->vc_rows >> 2) { | |
1676 | if (vc->vc_rows - b > 0) | |
1677 | fbcon_bmove(vc, b, 0, b - count, 0, | |
1678 | vc->vc_rows - b, | |
1679 | vc->vc_cols); | |
1680 | ywrap_down(vc, count); | |
1681 | if (t > 0) | |
1682 | fbcon_bmove(vc, count, 0, 0, 0, t, | |
1683 | vc->vc_cols); | |
1684 | } else if (info->flags & FBINFO_READS_FAST) | |
1685 | fbcon_bmove(vc, t, 0, t + count, 0, | |
1686 | b - t - count, vc->vc_cols); | |
1687 | else | |
1688 | goto redraw_down; | |
1689 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1690 | break; | |
1691 | ||
1692 | case SCROLL_PAN_MOVE: | |
1693 | if ((count - p->yscroll <= p->vrows - vc->vc_rows) | |
1694 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1695 | || (scroll_partial | |
1696 | && (b - t - count > | |
1697 | 3 * vc->vc_rows >> 2)))) { | |
1698 | if (vc->vc_rows - b > 0) | |
1699 | fbcon_bmove(vc, b, 0, b - count, 0, | |
1700 | vc->vc_rows - b, | |
1701 | vc->vc_cols); | |
1702 | ypan_down(vc, count); | |
1703 | if (t > 0) | |
1704 | fbcon_bmove(vc, count, 0, 0, 0, t, | |
1705 | vc->vc_cols); | |
1706 | } else if (info->flags & FBINFO_READS_FAST) | |
1707 | fbcon_bmove(vc, t, 0, t + count, 0, | |
1708 | b - t - count, vc->vc_cols); | |
1709 | else | |
1710 | goto redraw_down; | |
1711 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1712 | break; | |
1713 | ||
1714 | case SCROLL_PAN_REDRAW: | |
1715 | if ((count - p->yscroll <= p->vrows - vc->vc_rows) | |
1716 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1717 | || (scroll_partial | |
1718 | && (b - t - count > | |
1719 | 3 * vc->vc_rows >> 2)))) { | |
1720 | if (vc->vc_rows - b > 0) | |
1721 | fbcon_redraw_move(vc, p, b, vc->vc_rows - b, | |
1722 | b - count); | |
1723 | ypan_down_redraw(vc, t, count); | |
1724 | if (t > 0) | |
1725 | fbcon_redraw_move(vc, p, count, t, 0); | |
1726 | } else | |
1727 | fbcon_redraw_move(vc, p, t, b - t - count, t + count); | |
1728 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1729 | break; | |
1730 | ||
1731 | case SCROLL_REDRAW: | |
1732 | redraw_down: | |
1733 | fbcon_redraw(vc, p, b - 1, b - t - count, | |
1734 | -count * vc->vc_cols); | |
1735 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1736 | scr_memsetw((unsigned short *) (vc->vc_origin + | |
1737 | vc->vc_size_row * | |
1738 | t), | |
1739 | vc->vc_video_erase_char, | |
1740 | vc->vc_size_row * count); | |
1741 | return 1; | |
1742 | } | |
1743 | } | |
1744 | return 0; | |
1745 | } | |
1746 | ||
1747 | ||
1748 | static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, | |
1749 | int height, int width) | |
1750 | { | |
1751 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1752 | struct display *p = &fb_display[vc->vc_num]; | |
1753 | ||
1754 | if (fbcon_is_inactive(vc, info)) | |
1755 | return; | |
1756 | ||
1757 | if (!width || !height) | |
1758 | return; | |
1759 | ||
1760 | /* Split blits that cross physical y_wrap case. | |
1761 | * Pathological case involves 4 blits, better to use recursive | |
1762 | * code rather than unrolled case | |
1763 | * | |
1764 | * Recursive invocations don't need to erase the cursor over and | |
1765 | * over again, so we use fbcon_bmove_rec() | |
1766 | */ | |
1767 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, | |
1768 | p->vrows - p->yscroll); | |
1769 | } | |
1770 | ||
1771 | static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, | |
1772 | int dy, int dx, int height, int width, u_int y_break) | |
1773 | { | |
1774 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1775 | struct fbcon_ops *ops = info->fbcon_par; | |
1776 | u_int b; | |
1777 | ||
1778 | if (sy < y_break && sy + height > y_break) { | |
1779 | b = y_break - sy; | |
1780 | if (dy < sy) { /* Avoid trashing self */ | |
1781 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1782 | y_break); | |
1783 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1784 | height - b, width, y_break); | |
1785 | } else { | |
1786 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1787 | height - b, width, y_break); | |
1788 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1789 | y_break); | |
1790 | } | |
1791 | return; | |
1792 | } | |
1793 | ||
1794 | if (dy < y_break && dy + height > y_break) { | |
1795 | b = y_break - dy; | |
1796 | if (dy < sy) { /* Avoid trashing self */ | |
1797 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1798 | y_break); | |
1799 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1800 | height - b, width, y_break); | |
1801 | } else { | |
1802 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1803 | height - b, width, y_break); | |
1804 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1805 | y_break); | |
1806 | } | |
1807 | return; | |
1808 | } | |
1809 | ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, | |
1810 | height, width); | |
1811 | } | |
1812 | ||
1813 | static __inline__ void updatescrollmode(struct display *p, struct fb_info *info, | |
1814 | struct vc_data *vc) | |
1815 | { | |
1816 | int fh = vc->vc_font.height; | |
1817 | int cap = info->flags; | |
1818 | int good_pan = (cap & FBINFO_HWACCEL_YPAN) | |
1819 | && divides(info->fix.ypanstep, vc->vc_font.height) | |
1820 | && info->var.yres_virtual > info->var.yres; | |
1821 | int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) | |
1822 | && divides(info->fix.ywrapstep, vc->vc_font.height) | |
1823 | && divides(vc->vc_font.height, info->var.yres_virtual); | |
1824 | int reading_fast = cap & FBINFO_READS_FAST; | |
1825 | int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && !(cap & FBINFO_HWACCEL_DISABLED); | |
1826 | int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && !(cap & FBINFO_HWACCEL_DISABLED); | |
1827 | ||
1828 | p->vrows = info->var.yres_virtual/fh; | |
1829 | if (info->var.yres > (fh * (vc->vc_rows + 1))) | |
1830 | p->vrows -= (info->var.yres - (fh * vc->vc_rows)) / fh; | |
1831 | if ((info->var.yres % fh) && (info->var.yres_virtual % fh < | |
1832 | info->var.yres % fh)) | |
1833 | p->vrows--; | |
1834 | ||
1835 | if (good_wrap || good_pan) { | |
1836 | if (reading_fast || fast_copyarea) | |
1837 | p->scrollmode = good_wrap ? SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; | |
1838 | else | |
1839 | p->scrollmode = good_wrap ? SCROLL_REDRAW : | |
1840 | SCROLL_PAN_REDRAW; | |
1841 | } else { | |
1842 | if (reading_fast || (fast_copyarea && !fast_imageblit)) | |
1843 | p->scrollmode = SCROLL_MOVE; | |
1844 | else | |
1845 | p->scrollmode = SCROLL_REDRAW; | |
1846 | } | |
1847 | } | |
1848 | ||
1849 | static int fbcon_resize(struct vc_data *vc, unsigned int width, | |
1850 | unsigned int height) | |
1851 | { | |
1852 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1853 | struct display *p = &fb_display[vc->vc_num]; | |
1854 | struct fb_var_screeninfo var = info->var; | |
1855 | int x_diff, y_diff; | |
1856 | int fw = vc->vc_font.width; | |
1857 | int fh = vc->vc_font.height; | |
1858 | ||
1859 | var.xres = width * fw; | |
1860 | var.yres = height * fh; | |
1861 | x_diff = info->var.xres - var.xres; | |
1862 | y_diff = info->var.yres - var.yres; | |
1863 | if (x_diff < 0 || x_diff > fw || (y_diff < 0 || y_diff > fh)) { | |
1864 | struct fb_videomode *mode; | |
1865 | ||
1866 | DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); | |
1867 | mode = fb_find_best_mode(&var, &info->modelist); | |
1868 | if (mode == NULL) | |
1869 | return -EINVAL; | |
1870 | fb_videomode_to_var(&var, mode); | |
1871 | if (width > var.xres/fw || height > var.yres/fh) | |
1872 | return -EINVAL; | |
1873 | /* | |
1874 | * The following can probably have any value... Do we need to | |
1875 | * set all of them? | |
1876 | */ | |
1877 | var.bits_per_pixel = p->bits_per_pixel; | |
1878 | var.xres_virtual = p->xres_virtual; | |
1879 | var.yres_virtual = p->yres_virtual; | |
1880 | var.accel_flags = p->accel_flags; | |
1881 | var.width = p->width; | |
1882 | var.height = p->height; | |
1883 | var.red = p->red; | |
1884 | var.green = p->green; | |
1885 | var.blue = p->blue; | |
1886 | var.transp = p->transp; | |
1887 | var.nonstd = p->nonstd; | |
1888 | ||
1889 | DPRINTK("resize now %ix%i\n", var.xres, var.yres); | |
1890 | if (CON_IS_VISIBLE(vc)) { | |
1891 | var.activate = FB_ACTIVATE_NOW | | |
1892 | FB_ACTIVATE_FORCE; | |
1893 | fb_set_var(info, &var); | |
1894 | } | |
1895 | var_to_display(p, &info->var, info); | |
1896 | } | |
1897 | updatescrollmode(p, info, vc); | |
1898 | return 0; | |
1899 | } | |
1900 | ||
1901 | static int fbcon_switch(struct vc_data *vc) | |
1902 | { | |
1903 | struct fb_info *info; | |
1904 | struct display *p = &fb_display[vc->vc_num]; | |
1905 | struct fb_var_screeninfo var; | |
1906 | int i, prev_console; | |
1907 | ||
1908 | info = registered_fb[con2fb_map[vc->vc_num]]; | |
1909 | ||
1910 | if (softback_top) { | |
1911 | int l = fbcon_softback_size / vc->vc_size_row; | |
1912 | if (softback_lines) | |
1913 | fbcon_set_origin(vc); | |
1914 | softback_top = softback_curr = softback_in = softback_buf; | |
1915 | softback_lines = 0; | |
1916 | ||
1917 | if (l > 5) | |
1918 | softback_end = softback_buf + l * vc->vc_size_row; | |
1919 | else { | |
1920 | /* Smaller scrollback makes no sense, and 0 would screw | |
1921 | the operation totally */ | |
1922 | softback_top = 0; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | if (logo_shown >= 0) { | |
1927 | struct vc_data *conp2 = vc_cons[logo_shown].d; | |
1928 | ||
1929 | if (conp2->vc_top == logo_lines | |
1930 | && conp2->vc_bottom == conp2->vc_rows) | |
1931 | conp2->vc_top = 0; | |
1932 | logo_shown = FBCON_LOGO_CANSHOW; | |
1933 | } | |
1934 | ||
1935 | prev_console = ((struct fbcon_ops *)info->fbcon_par)->currcon; | |
1936 | ||
1937 | /* | |
1938 | * FIXME: If we have multiple fbdev's loaded, we need to | |
1939 | * update all info->currcon. Perhaps, we can place this | |
1940 | * in a centralized structure, but this might break some | |
1941 | * drivers. | |
1942 | * | |
1943 | * info->currcon = vc->vc_num; | |
1944 | */ | |
1945 | for (i = 0; i < FB_MAX; i++) { | |
1946 | if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) { | |
1947 | struct fbcon_ops *ops = registered_fb[i]->fbcon_par; | |
1948 | ||
1949 | ops->currcon = vc->vc_num; | |
1950 | } | |
1951 | } | |
1952 | memset(&var, 0, sizeof(struct fb_var_screeninfo)); | |
1953 | display_to_var(&var, p); | |
1954 | var.activate = FB_ACTIVATE_NOW; | |
1955 | ||
1956 | /* | |
1957 | * make sure we don't unnecessarily trip the memcmp() | |
1958 | * in fb_set_var() | |
1959 | */ | |
1960 | info->var.activate = var.activate; | |
1961 | info->var.yoffset = info->var.xoffset = p->yscroll = 0; | |
1962 | fb_set_var(info, &var); | |
1963 | ||
1964 | if (prev_console != -1 && | |
1965 | registered_fb[con2fb_map[prev_console]] != info && | |
1966 | info->fbops->fb_set_par) | |
1967 | info->fbops->fb_set_par(info); | |
1968 | ||
1969 | set_blitting_type(vc, info, p); | |
1970 | ((struct fbcon_ops *)info->fbcon_par)->cursor_reset = 1; | |
1971 | ||
1972 | vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1); | |
1973 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; | |
1974 | updatescrollmode(p, info, vc); | |
1975 | ||
1976 | switch (p->scrollmode) { | |
1977 | case SCROLL_WRAP_MOVE: | |
1978 | scrollback_phys_max = p->vrows - vc->vc_rows; | |
1979 | break; | |
1980 | case SCROLL_PAN_MOVE: | |
1981 | case SCROLL_PAN_REDRAW: | |
1982 | scrollback_phys_max = p->vrows - 2 * vc->vc_rows; | |
1983 | if (scrollback_phys_max < 0) | |
1984 | scrollback_phys_max = 0; | |
1985 | break; | |
1986 | default: | |
1987 | scrollback_phys_max = 0; | |
1988 | break; | |
1989 | } | |
1990 | scrollback_max = 0; | |
1991 | scrollback_current = 0; | |
1992 | ||
1993 | update_var(vc->vc_num, info); | |
1994 | fbcon_set_palette(vc, color_table); | |
1995 | fbcon_clear_margins(vc, 0); | |
1996 | ||
1997 | if (logo_shown == FBCON_LOGO_DRAW) { | |
1998 | ||
1999 | logo_shown = fg_console; | |
2000 | /* This is protected above by initmem_freed */ | |
2001 | fb_show_logo(info); | |
2002 | update_region(vc, | |
2003 | vc->vc_origin + vc->vc_size_row * vc->vc_top, | |
2004 | vc->vc_size_row * (vc->vc_bottom - | |
2005 | vc->vc_top) / 2); | |
2006 | return 0; | |
2007 | } | |
2008 | return 1; | |
2009 | } | |
2010 | ||
2011 | static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, | |
2012 | int blank) | |
2013 | { | |
2014 | if (blank) { | |
2015 | unsigned short charmask = vc->vc_hi_font_mask ? | |
2016 | 0x1ff : 0xff; | |
2017 | unsigned short oldc; | |
2018 | ||
2019 | oldc = vc->vc_video_erase_char; | |
2020 | vc->vc_video_erase_char &= charmask; | |
2021 | fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); | |
2022 | vc->vc_video_erase_char = oldc; | |
2023 | } | |
2024 | } | |
2025 | ||
2026 | static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) | |
2027 | { | |
2028 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2029 | struct fbcon_ops *ops = info->fbcon_par; | |
2030 | ||
2031 | if (mode_switch) { | |
2032 | struct fb_var_screeninfo var = info->var; | |
2033 | ||
2034 | ops->graphics = 1; | |
2035 | ||
2036 | if (!blank) { | |
2037 | var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; | |
2038 | fb_set_var(info, &var); | |
2039 | ops->graphics = 0; | |
2040 | } | |
2041 | } | |
2042 | ||
2043 | if (!fbcon_is_inactive(vc, info)) { | |
2044 | if (ops->blank_state != blank) { | |
2045 | ops->blank_state = blank; | |
2046 | fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); | |
2047 | ops->cursor_flash = (!blank); | |
2048 | ||
2049 | if (fb_blank(info, blank)) | |
2050 | fbcon_generic_blank(vc, info, blank); | |
2051 | } | |
2052 | ||
2053 | if (!blank) | |
2054 | update_screen(vc); | |
2055 | } | |
2056 | ||
2057 | return 0; | |
2058 | } | |
2059 | ||
2060 | static void fbcon_free_font(struct display *p) | |
2061 | { | |
2062 | if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) | |
2063 | kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); | |
2064 | p->fontdata = NULL; | |
2065 | p->userfont = 0; | |
2066 | } | |
2067 | ||
2068 | static int fbcon_get_font(struct vc_data *vc, struct console_font *font) | |
2069 | { | |
2070 | u8 *fontdata = vc->vc_font.data; | |
2071 | u8 *data = font->data; | |
2072 | int i, j; | |
2073 | ||
2074 | font->width = vc->vc_font.width; | |
2075 | font->height = vc->vc_font.height; | |
2076 | font->charcount = vc->vc_hi_font_mask ? 512 : 256; | |
2077 | if (!font->data) | |
2078 | return 0; | |
2079 | ||
2080 | if (font->width <= 8) { | |
2081 | j = vc->vc_font.height; | |
2082 | for (i = 0; i < font->charcount; i++) { | |
2083 | memcpy(data, fontdata, j); | |
2084 | memset(data + j, 0, 32 - j); | |
2085 | data += 32; | |
2086 | fontdata += j; | |
2087 | } | |
2088 | } else if (font->width <= 16) { | |
2089 | j = vc->vc_font.height * 2; | |
2090 | for (i = 0; i < font->charcount; i++) { | |
2091 | memcpy(data, fontdata, j); | |
2092 | memset(data + j, 0, 64 - j); | |
2093 | data += 64; | |
2094 | fontdata += j; | |
2095 | } | |
2096 | } else if (font->width <= 24) { | |
2097 | for (i = 0; i < font->charcount; i++) { | |
2098 | for (j = 0; j < vc->vc_font.height; j++) { | |
2099 | *data++ = fontdata[0]; | |
2100 | *data++ = fontdata[1]; | |
2101 | *data++ = fontdata[2]; | |
2102 | fontdata += sizeof(u32); | |
2103 | } | |
2104 | memset(data, 0, 3 * (32 - j)); | |
2105 | data += 3 * (32 - j); | |
2106 | } | |
2107 | } else { | |
2108 | j = vc->vc_font.height * 4; | |
2109 | for (i = 0; i < font->charcount; i++) { | |
2110 | memcpy(data, fontdata, j); | |
2111 | memset(data + j, 0, 128 - j); | |
2112 | data += 128; | |
2113 | fontdata += j; | |
2114 | } | |
2115 | } | |
2116 | return 0; | |
2117 | } | |
2118 | ||
2119 | static int fbcon_do_set_font(struct vc_data *vc, int w, int h, | |
2120 | u8 * data, int userfont) | |
2121 | { | |
2122 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2123 | struct display *p = &fb_display[vc->vc_num]; | |
2124 | int resize; | |
2125 | int cnt; | |
2126 | char *old_data = NULL; | |
2127 | ||
2128 | if (CON_IS_VISIBLE(vc) && softback_lines) | |
2129 | fbcon_set_origin(vc); | |
2130 | ||
2131 | resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); | |
2132 | if (p->userfont) | |
2133 | old_data = vc->vc_font.data; | |
2134 | if (userfont) | |
2135 | cnt = FNTCHARCNT(data); | |
2136 | else | |
2137 | cnt = 256; | |
2138 | vc->vc_font.data = p->fontdata = data; | |
2139 | if ((p->userfont = userfont)) | |
2140 | REFCOUNT(data)++; | |
2141 | vc->vc_font.width = w; | |
2142 | vc->vc_font.height = h; | |
2143 | if (vc->vc_hi_font_mask && cnt == 256) { | |
2144 | vc->vc_hi_font_mask = 0; | |
2145 | if (vc->vc_can_do_color) { | |
2146 | vc->vc_complement_mask >>= 1; | |
2147 | vc->vc_s_complement_mask >>= 1; | |
2148 | } | |
2149 | ||
2150 | /* ++Edmund: reorder the attribute bits */ | |
2151 | if (vc->vc_can_do_color) { | |
2152 | unsigned short *cp = | |
2153 | (unsigned short *) vc->vc_origin; | |
2154 | int count = vc->vc_screenbuf_size / 2; | |
2155 | unsigned short c; | |
2156 | for (; count > 0; count--, cp++) { | |
2157 | c = scr_readw(cp); | |
2158 | scr_writew(((c & 0xfe00) >> 1) | | |
2159 | (c & 0xff), cp); | |
2160 | } | |
2161 | c = vc->vc_video_erase_char; | |
2162 | vc->vc_video_erase_char = | |
2163 | ((c & 0xfe00) >> 1) | (c & 0xff); | |
2164 | vc->vc_attr >>= 1; | |
2165 | } | |
2166 | } else if (!vc->vc_hi_font_mask && cnt == 512) { | |
2167 | vc->vc_hi_font_mask = 0x100; | |
2168 | if (vc->vc_can_do_color) { | |
2169 | vc->vc_complement_mask <<= 1; | |
2170 | vc->vc_s_complement_mask <<= 1; | |
2171 | } | |
2172 | ||
2173 | /* ++Edmund: reorder the attribute bits */ | |
2174 | { | |
2175 | unsigned short *cp = | |
2176 | (unsigned short *) vc->vc_origin; | |
2177 | int count = vc->vc_screenbuf_size / 2; | |
2178 | unsigned short c; | |
2179 | for (; count > 0; count--, cp++) { | |
2180 | unsigned short newc; | |
2181 | c = scr_readw(cp); | |
2182 | if (vc->vc_can_do_color) | |
2183 | newc = | |
2184 | ((c & 0xff00) << 1) | (c & | |
2185 | 0xff); | |
2186 | else | |
2187 | newc = c & ~0x100; | |
2188 | scr_writew(newc, cp); | |
2189 | } | |
2190 | c = vc->vc_video_erase_char; | |
2191 | if (vc->vc_can_do_color) { | |
2192 | vc->vc_video_erase_char = | |
2193 | ((c & 0xff00) << 1) | (c & 0xff); | |
2194 | vc->vc_attr <<= 1; | |
2195 | } else | |
2196 | vc->vc_video_erase_char = c & ~0x100; | |
2197 | } | |
2198 | ||
2199 | } | |
2200 | ||
2201 | if (resize) { | |
2202 | /* reset wrap/pan */ | |
2203 | info->var.xoffset = info->var.yoffset = p->yscroll = 0; | |
2204 | vc_resize(vc, info->var.xres / w, info->var.yres / h); | |
2205 | if (CON_IS_VISIBLE(vc) && softback_buf) { | |
2206 | int l = fbcon_softback_size / vc->vc_size_row; | |
2207 | if (l > 5) | |
2208 | softback_end = | |
2209 | softback_buf + l * vc->vc_size_row; | |
2210 | else { | |
2211 | /* Smaller scrollback makes no sense, and 0 would screw | |
2212 | the operation totally */ | |
2213 | softback_top = 0; | |
2214 | } | |
2215 | } | |
2216 | } else if (CON_IS_VISIBLE(vc) | |
2217 | && vc->vc_mode == KD_TEXT) { | |
2218 | fbcon_clear_margins(vc, 0); | |
2219 | update_screen(vc); | |
2220 | } | |
2221 | ||
2222 | if (old_data && (--REFCOUNT(old_data) == 0)) | |
2223 | kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); | |
2224 | return 0; | |
2225 | } | |
2226 | ||
2227 | static int fbcon_copy_font(struct vc_data *vc, int con) | |
2228 | { | |
2229 | struct display *od = &fb_display[con]; | |
2230 | struct console_font *f = &vc->vc_font; | |
2231 | ||
2232 | if (od->fontdata == f->data) | |
2233 | return 0; /* already the same font... */ | |
2234 | return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); | |
2235 | } | |
2236 | ||
2237 | /* | |
2238 | * User asked to set font; we are guaranteed that | |
2239 | * a) width and height are in range 1..32 | |
2240 | * b) charcount does not exceed 512 | |
2241 | * but lets not assume that, since someone might someday want to use larger | |
2242 | * fonts. And charcount of 512 is small for unicode support. | |
2243 | * | |
2244 | * However, user space gives the font in 32 rows , regardless of | |
2245 | * actual font height. So a new API is needed if support for larger fonts | |
2246 | * is ever implemented. | |
2247 | */ | |
2248 | ||
2249 | static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags) | |
2250 | { | |
2251 | unsigned charcount = font->charcount; | |
2252 | int w = font->width; | |
2253 | int h = font->height; | |
2254 | int size; | |
2255 | int i, csum; | |
2256 | u8 *new_data, *data = font->data; | |
2257 | int pitch = (font->width+7) >> 3; | |
2258 | ||
2259 | /* Is there a reason why fbconsole couldn't handle any charcount >256? | |
2260 | * If not this check should be changed to charcount < 256 */ | |
2261 | if (charcount != 256 && charcount != 512) | |
2262 | return -EINVAL; | |
2263 | ||
2264 | size = h * pitch * charcount; | |
2265 | ||
2266 | new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); | |
2267 | ||
2268 | if (!new_data) | |
2269 | return -ENOMEM; | |
2270 | ||
2271 | new_data += FONT_EXTRA_WORDS * sizeof(int); | |
2272 | FNTSIZE(new_data) = size; | |
2273 | FNTCHARCNT(new_data) = charcount; | |
2274 | REFCOUNT(new_data) = 0; /* usage counter */ | |
2275 | for (i=0; i< charcount; i++) { | |
2276 | memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); | |
2277 | } | |
2278 | ||
2279 | /* Since linux has a nice crc32 function use it for counting font | |
2280 | * checksums. */ | |
2281 | csum = crc32(0, new_data, size); | |
2282 | ||
2283 | FNTSUM(new_data) = csum; | |
2284 | /* Check if the same font is on some other console already */ | |
2285 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2286 | struct vc_data *tmp = vc_cons[i].d; | |
2287 | ||
2288 | if (fb_display[i].userfont && | |
2289 | fb_display[i].fontdata && | |
2290 | FNTSUM(fb_display[i].fontdata) == csum && | |
2291 | FNTSIZE(fb_display[i].fontdata) == size && | |
2292 | tmp->vc_font.width == w && | |
2293 | !memcmp(fb_display[i].fontdata, new_data, size)) { | |
2294 | kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); | |
2295 | new_data = fb_display[i].fontdata; | |
2296 | break; | |
2297 | } | |
2298 | } | |
2299 | return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); | |
2300 | } | |
2301 | ||
2302 | static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) | |
2303 | { | |
2304 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2305 | struct font_desc *f; | |
2306 | ||
2307 | if (!name) | |
2308 | f = get_default_font(info->var.xres, info->var.yres); | |
2309 | else if (!(f = find_font(name))) | |
2310 | return -ENOENT; | |
2311 | ||
2312 | font->width = f->width; | |
2313 | font->height = f->height; | |
2314 | return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); | |
2315 | } | |
2316 | ||
2317 | static u16 palette_red[16]; | |
2318 | static u16 palette_green[16]; | |
2319 | static u16 palette_blue[16]; | |
2320 | ||
2321 | static struct fb_cmap palette_cmap = { | |
2322 | 0, 16, palette_red, palette_green, palette_blue, NULL | |
2323 | }; | |
2324 | ||
2325 | static int fbcon_set_palette(struct vc_data *vc, unsigned char *table) | |
2326 | { | |
2327 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2328 | int i, j, k, depth; | |
2329 | u8 val; | |
2330 | ||
2331 | if (fbcon_is_inactive(vc, info)) | |
2332 | return -EINVAL; | |
2333 | ||
2334 | if (!CON_IS_VISIBLE(vc)) | |
2335 | return 0; | |
2336 | ||
2337 | depth = fb_get_color_depth(&info->var); | |
2338 | if (depth > 3) { | |
2339 | for (i = j = 0; i < 16; i++) { | |
2340 | k = table[i]; | |
2341 | val = vc->vc_palette[j++]; | |
2342 | palette_red[k] = (val << 8) | val; | |
2343 | val = vc->vc_palette[j++]; | |
2344 | palette_green[k] = (val << 8) | val; | |
2345 | val = vc->vc_palette[j++]; | |
2346 | palette_blue[k] = (val << 8) | val; | |
2347 | } | |
2348 | palette_cmap.len = 16; | |
2349 | palette_cmap.start = 0; | |
2350 | /* | |
2351 | * If framebuffer is capable of less than 16 colors, | |
2352 | * use default palette of fbcon. | |
2353 | */ | |
2354 | } else | |
2355 | fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); | |
2356 | ||
2357 | return fb_set_cmap(&palette_cmap, info); | |
2358 | } | |
2359 | ||
2360 | static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) | |
2361 | { | |
2362 | unsigned long p; | |
2363 | int line; | |
2364 | ||
2365 | if (vc->vc_num != fg_console || !softback_lines) | |
2366 | return (u16 *) (vc->vc_origin + offset); | |
2367 | line = offset / vc->vc_size_row; | |
2368 | if (line >= softback_lines) | |
2369 | return (u16 *) (vc->vc_origin + offset - | |
2370 | softback_lines * vc->vc_size_row); | |
2371 | p = softback_curr + offset; | |
2372 | if (p >= softback_end) | |
2373 | p += softback_buf - softback_end; | |
2374 | return (u16 *) p; | |
2375 | } | |
2376 | ||
2377 | static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, | |
2378 | int *px, int *py) | |
2379 | { | |
2380 | unsigned long ret; | |
2381 | int x, y; | |
2382 | ||
2383 | if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { | |
2384 | unsigned long offset = (pos - vc->vc_origin) / 2; | |
2385 | ||
2386 | x = offset % vc->vc_cols; | |
2387 | y = offset / vc->vc_cols; | |
2388 | if (vc->vc_num == fg_console) | |
2389 | y += softback_lines; | |
2390 | ret = pos + (vc->vc_cols - x) * 2; | |
2391 | } else if (vc->vc_num == fg_console && softback_lines) { | |
2392 | unsigned long offset = pos - softback_curr; | |
2393 | ||
2394 | if (pos < softback_curr) | |
2395 | offset += softback_end - softback_buf; | |
2396 | offset /= 2; | |
2397 | x = offset % vc->vc_cols; | |
2398 | y = offset / vc->vc_cols; | |
2399 | ret = pos + (vc->vc_cols - x) * 2; | |
2400 | if (ret == softback_end) | |
2401 | ret = softback_buf; | |
2402 | if (ret == softback_in) | |
2403 | ret = vc->vc_origin; | |
2404 | } else { | |
2405 | /* Should not happen */ | |
2406 | x = y = 0; | |
2407 | ret = vc->vc_origin; | |
2408 | } | |
2409 | if (px) | |
2410 | *px = x; | |
2411 | if (py) | |
2412 | *py = y; | |
2413 | return ret; | |
2414 | } | |
2415 | ||
2416 | /* As we might be inside of softback, we may work with non-contiguous buffer, | |
2417 | that's why we have to use a separate routine. */ | |
2418 | static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) | |
2419 | { | |
2420 | while (cnt--) { | |
2421 | u16 a = scr_readw(p); | |
2422 | if (!vc->vc_can_do_color) | |
2423 | a ^= 0x0800; | |
2424 | else if (vc->vc_hi_font_mask == 0x100) | |
2425 | a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | | |
2426 | (((a) & 0x0e00) << 4); | |
2427 | else | |
2428 | a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | | |
2429 | (((a) & 0x0700) << 4); | |
2430 | scr_writew(a, p++); | |
2431 | if (p == (u16 *) softback_end) | |
2432 | p = (u16 *) softback_buf; | |
2433 | if (p == (u16 *) softback_in) | |
2434 | p = (u16 *) vc->vc_origin; | |
2435 | } | |
2436 | } | |
2437 | ||
2438 | static int fbcon_scrolldelta(struct vc_data *vc, int lines) | |
2439 | { | |
2440 | struct fb_info *info = registered_fb[con2fb_map[fg_console]]; | |
2441 | struct display *p = &fb_display[fg_console]; | |
2442 | int offset, limit, scrollback_old; | |
2443 | ||
2444 | if (softback_top) { | |
2445 | if (vc->vc_num != fg_console) | |
2446 | return 0; | |
2447 | if (vc->vc_mode != KD_TEXT || !lines) | |
2448 | return 0; | |
2449 | if (logo_shown >= 0) { | |
2450 | struct vc_data *conp2 = vc_cons[logo_shown].d; | |
2451 | ||
2452 | if (conp2->vc_top == logo_lines | |
2453 | && conp2->vc_bottom == conp2->vc_rows) | |
2454 | conp2->vc_top = 0; | |
2455 | if (logo_shown == vc->vc_num) { | |
2456 | unsigned long p, q; | |
2457 | int i; | |
2458 | ||
2459 | p = softback_in; | |
2460 | q = vc->vc_origin + | |
2461 | logo_lines * vc->vc_size_row; | |
2462 | for (i = 0; i < logo_lines; i++) { | |
2463 | if (p == softback_top) | |
2464 | break; | |
2465 | if (p == softback_buf) | |
2466 | p = softback_end; | |
2467 | p -= vc->vc_size_row; | |
2468 | q -= vc->vc_size_row; | |
2469 | scr_memcpyw((u16 *) q, (u16 *) p, | |
2470 | vc->vc_size_row); | |
2471 | } | |
2472 | softback_in = p; | |
2473 | update_region(vc, vc->vc_origin, | |
2474 | logo_lines * vc->vc_cols); | |
2475 | } | |
2476 | logo_shown = FBCON_LOGO_CANSHOW; | |
2477 | } | |
2478 | fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); | |
2479 | fbcon_redraw_softback(vc, p, lines); | |
2480 | fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); | |
2481 | return 0; | |
2482 | } | |
2483 | ||
2484 | if (!scrollback_phys_max) | |
2485 | return -ENOSYS; | |
2486 | ||
2487 | scrollback_old = scrollback_current; | |
2488 | scrollback_current -= lines; | |
2489 | if (scrollback_current < 0) | |
2490 | scrollback_current = 0; | |
2491 | else if (scrollback_current > scrollback_max) | |
2492 | scrollback_current = scrollback_max; | |
2493 | if (scrollback_current == scrollback_old) | |
2494 | return 0; | |
2495 | ||
2496 | if (fbcon_is_inactive(vc, info)) | |
2497 | return 0; | |
2498 | ||
2499 | fbcon_cursor(vc, CM_ERASE); | |
2500 | ||
2501 | offset = p->yscroll - scrollback_current; | |
2502 | limit = p->vrows; | |
2503 | switch (p->scrollmode) { | |
2504 | case SCROLL_WRAP_MOVE: | |
2505 | info->var.vmode |= FB_VMODE_YWRAP; | |
2506 | break; | |
2507 | case SCROLL_PAN_MOVE: | |
2508 | case SCROLL_PAN_REDRAW: | |
2509 | limit -= vc->vc_rows; | |
2510 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
2511 | break; | |
2512 | } | |
2513 | if (offset < 0) | |
2514 | offset += limit; | |
2515 | else if (offset >= limit) | |
2516 | offset -= limit; | |
2517 | info->var.xoffset = 0; | |
2518 | info->var.yoffset = offset * vc->vc_font.height; | |
2519 | update_var(vc->vc_num, info); | |
2520 | if (!scrollback_current) | |
2521 | fbcon_cursor(vc, CM_DRAW); | |
2522 | return 0; | |
2523 | } | |
2524 | ||
2525 | static int fbcon_set_origin(struct vc_data *vc) | |
2526 | { | |
2527 | if (softback_lines) | |
2528 | fbcon_scrolldelta(vc, softback_lines); | |
2529 | return 0; | |
2530 | } | |
2531 | ||
2532 | static void fbcon_suspended(struct fb_info *info) | |
2533 | { | |
2534 | struct vc_data *vc = NULL; | |
2535 | struct fbcon_ops *ops = info->fbcon_par; | |
2536 | ||
2537 | if (!ops || ops->currcon < 0) | |
2538 | return; | |
2539 | vc = vc_cons[ops->currcon].d; | |
2540 | ||
2541 | /* Clear cursor, restore saved data */ | |
2542 | fbcon_cursor(vc, CM_ERASE); | |
2543 | } | |
2544 | ||
2545 | static void fbcon_resumed(struct fb_info *info) | |
2546 | { | |
2547 | struct vc_data *vc; | |
2548 | struct fbcon_ops *ops = info->fbcon_par; | |
2549 | ||
2550 | if (!ops || ops->currcon < 0) | |
2551 | return; | |
2552 | vc = vc_cons[ops->currcon].d; | |
2553 | ||
2554 | update_screen(vc); | |
2555 | } | |
2556 | ||
2557 | static void fbcon_modechanged(struct fb_info *info) | |
2558 | { | |
2559 | struct fbcon_ops *ops = info->fbcon_par; | |
2560 | struct vc_data *vc; | |
2561 | struct display *p; | |
2562 | int rows, cols; | |
2563 | ||
2564 | if (!ops || ops->currcon < 0) | |
2565 | return; | |
2566 | vc = vc_cons[ops->currcon].d; | |
2567 | if (vc->vc_mode != KD_TEXT || registered_fb[con2fb_map[ops->currcon]] != info) | |
2568 | return; | |
2569 | ||
2570 | p = &fb_display[vc->vc_num]; | |
2571 | ||
2572 | info->var.xoffset = info->var.yoffset = p->yscroll = 0; | |
2573 | ||
2574 | if (CON_IS_VISIBLE(vc)) { | |
2575 | var_to_display(p, &info->var, info); | |
2576 | cols = info->var.xres / vc->vc_font.width; | |
2577 | rows = info->var.yres / vc->vc_font.height; | |
2578 | vc_resize(vc, cols, rows); | |
2579 | updatescrollmode(p, info, vc); | |
2580 | scrollback_max = 0; | |
2581 | scrollback_current = 0; | |
2582 | update_var(vc->vc_num, info); | |
2583 | fbcon_set_palette(vc, color_table); | |
2584 | update_screen(vc); | |
2585 | if (softback_buf) { | |
2586 | int l = fbcon_softback_size / vc->vc_size_row; | |
2587 | if (l > 5) | |
2588 | softback_end = softback_buf + l * vc->vc_size_row; | |
2589 | else { | |
2590 | /* Smaller scrollback makes no sense, and 0 | |
2591 | would screw the operation totally */ | |
2592 | softback_top = 0; | |
2593 | } | |
2594 | } | |
2595 | } | |
2596 | } | |
2597 | ||
2598 | static int fbcon_mode_deleted(struct fb_info *info, | |
2599 | struct fb_videomode *mode) | |
2600 | { | |
2601 | struct fb_info *fb_info; | |
2602 | struct display *p; | |
2603 | int i, j, found = 0; | |
2604 | ||
2605 | /* before deletion, ensure that mode is not in use */ | |
2606 | for (i = first_fb_vc; i <= last_fb_vc; i++) { | |
2607 | j = con2fb_map[i]; | |
2608 | if (j == -1) | |
2609 | continue; | |
2610 | fb_info = registered_fb[j]; | |
2611 | if (fb_info != info) | |
2612 | continue; | |
2613 | p = &fb_display[i]; | |
2614 | if (!p || !p->mode) | |
2615 | continue; | |
2616 | if (fb_mode_is_equal(p->mode, mode)) { | |
2617 | found = 1; | |
2618 | break; | |
2619 | } | |
2620 | } | |
2621 | return found; | |
2622 | } | |
2623 | ||
2624 | static int fbcon_fb_registered(int idx) | |
2625 | { | |
2626 | int ret = 0, i; | |
2627 | ||
2628 | if (info_idx == -1) { | |
2629 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2630 | if (con2fb_map_boot[i] == idx) { | |
2631 | info_idx = idx; | |
2632 | break; | |
2633 | } | |
2634 | } | |
2635 | if (info_idx != -1) | |
2636 | ret = fbcon_takeover(1); | |
2637 | } else { | |
2638 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2639 | if (con2fb_map_boot[i] == idx) | |
2640 | set_con2fb_map(i, idx, 0); | |
2641 | } | |
2642 | } | |
2643 | ||
2644 | return ret; | |
2645 | } | |
2646 | ||
2647 | static void fbcon_fb_blanked(struct fb_info *info, int blank) | |
2648 | { | |
2649 | struct fbcon_ops *ops = info->fbcon_par; | |
2650 | struct vc_data *vc; | |
2651 | ||
2652 | if (!ops || ops->currcon < 0) | |
2653 | return; | |
2654 | ||
2655 | vc = vc_cons[ops->currcon].d; | |
2656 | if (vc->vc_mode != KD_TEXT || | |
2657 | registered_fb[con2fb_map[ops->currcon]] != info) | |
2658 | return; | |
2659 | ||
2660 | if (CON_IS_VISIBLE(vc)) { | |
2661 | if (blank) | |
2662 | do_blank_screen(0); | |
2663 | else | |
2664 | do_unblank_screen(0); | |
2665 | } | |
2666 | ops->blank_state = blank; | |
2667 | } | |
2668 | ||
2669 | static void fbcon_new_modelist(struct fb_info *info) | |
2670 | { | |
2671 | int i; | |
2672 | struct vc_data *vc; | |
2673 | struct fb_var_screeninfo var; | |
2674 | struct fb_videomode *mode; | |
2675 | ||
2676 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2677 | if (registered_fb[con2fb_map[i]] != info) | |
2678 | continue; | |
2679 | if (!fb_display[i].mode) | |
2680 | continue; | |
2681 | vc = vc_cons[i].d; | |
2682 | display_to_var(&var, &fb_display[i]); | |
2683 | mode = fb_find_nearest_mode(&var, &info->modelist); | |
2684 | fb_videomode_to_var(&var, mode); | |
2685 | ||
2686 | if (vc) | |
2687 | fbcon_set_disp(info, &var, vc); | |
2688 | else | |
2689 | fbcon_preset_disp(info, &var, i); | |
2690 | ||
2691 | } | |
2692 | } | |
2693 | ||
2694 | static int fbcon_event_notify(struct notifier_block *self, | |
2695 | unsigned long action, void *data) | |
2696 | { | |
2697 | struct fb_event *event = data; | |
2698 | struct fb_info *info = event->info; | |
2699 | struct fb_videomode *mode; | |
2700 | struct fb_con2fbmap *con2fb; | |
2701 | int ret = 0; | |
2702 | ||
2703 | switch(action) { | |
2704 | case FB_EVENT_SUSPEND: | |
2705 | fbcon_suspended(info); | |
2706 | break; | |
2707 | case FB_EVENT_RESUME: | |
2708 | fbcon_resumed(info); | |
2709 | break; | |
2710 | case FB_EVENT_MODE_CHANGE: | |
2711 | fbcon_modechanged(info); | |
2712 | break; | |
2713 | case FB_EVENT_MODE_DELETE: | |
2714 | mode = event->data; | |
2715 | ret = fbcon_mode_deleted(info, mode); | |
2716 | break; | |
2717 | case FB_EVENT_FB_REGISTERED: | |
2718 | ret = fbcon_fb_registered(info->node); | |
2719 | break; | |
2720 | case FB_EVENT_SET_CONSOLE_MAP: | |
2721 | con2fb = event->data; | |
2722 | ret = set_con2fb_map(con2fb->console - 1, | |
2723 | con2fb->framebuffer, 1); | |
2724 | break; | |
2725 | case FB_EVENT_GET_CONSOLE_MAP: | |
2726 | con2fb = event->data; | |
2727 | con2fb->framebuffer = con2fb_map[con2fb->console - 1]; | |
2728 | break; | |
2729 | case FB_EVENT_BLANK: | |
2730 | fbcon_fb_blanked(info, *(int *)event->data); | |
2731 | break; | |
2732 | case FB_EVENT_NEW_MODELIST: | |
2733 | fbcon_new_modelist(info); | |
2734 | break; | |
2735 | } | |
2736 | ||
2737 | return ret; | |
2738 | } | |
2739 | ||
2740 | /* | |
2741 | * The console `switch' structure for the frame buffer based console | |
2742 | */ | |
2743 | ||
2744 | static const struct consw fb_con = { | |
2745 | .owner = THIS_MODULE, | |
2746 | .con_startup = fbcon_startup, | |
2747 | .con_init = fbcon_init, | |
2748 | .con_deinit = fbcon_deinit, | |
2749 | .con_clear = fbcon_clear, | |
2750 | .con_putc = fbcon_putc, | |
2751 | .con_putcs = fbcon_putcs, | |
2752 | .con_cursor = fbcon_cursor, | |
2753 | .con_scroll = fbcon_scroll, | |
2754 | .con_bmove = fbcon_bmove, | |
2755 | .con_switch = fbcon_switch, | |
2756 | .con_blank = fbcon_blank, | |
2757 | .con_font_set = fbcon_set_font, | |
2758 | .con_font_get = fbcon_get_font, | |
2759 | .con_font_default = fbcon_set_def_font, | |
2760 | .con_font_copy = fbcon_copy_font, | |
2761 | .con_set_palette = fbcon_set_palette, | |
2762 | .con_scrolldelta = fbcon_scrolldelta, | |
2763 | .con_set_origin = fbcon_set_origin, | |
2764 | .con_invert_region = fbcon_invert_region, | |
2765 | .con_screen_pos = fbcon_screen_pos, | |
2766 | .con_getxy = fbcon_getxy, | |
2767 | .con_resize = fbcon_resize, | |
2768 | }; | |
2769 | ||
2770 | static struct notifier_block fbcon_event_notifier = { | |
2771 | .notifier_call = fbcon_event_notify, | |
2772 | }; | |
2773 | ||
2774 | static int __init fb_console_init(void) | |
2775 | { | |
2776 | int i; | |
2777 | ||
2778 | acquire_console_sem(); | |
2779 | fb_register_client(&fbcon_event_notifier); | |
2780 | release_console_sem(); | |
2781 | ||
2782 | for (i = 0; i < MAX_NR_CONSOLES; i++) | |
2783 | con2fb_map[i] = -1; | |
2784 | ||
2785 | if (num_registered_fb) { | |
2786 | for (i = 0; i < FB_MAX; i++) { | |
2787 | if (registered_fb[i] != NULL) { | |
2788 | info_idx = i; | |
2789 | break; | |
2790 | } | |
2791 | } | |
2792 | fbcon_takeover(0); | |
2793 | } | |
2794 | ||
2795 | return 0; | |
2796 | } | |
2797 | ||
2798 | module_init(fb_console_init); | |
2799 | ||
2800 | #ifdef MODULE | |
2801 | ||
2802 | static void __exit fb_console_exit(void) | |
2803 | { | |
2804 | acquire_console_sem(); | |
2805 | fb_unregister_client(&fbcon_event_notifier); | |
2806 | release_console_sem(); | |
2807 | give_up_console(&fb_con); | |
2808 | } | |
2809 | ||
2810 | module_exit(fb_console_exit); | |
2811 | ||
2812 | #endif | |
2813 | ||
2814 | MODULE_LICENSE("GPL"); |