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Commit | Line | Data |
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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 | ||
ab767201 | 109 | static struct display fb_display[MAX_NR_CONSOLES]; |
e4fc2761 | 110 | |
1da177e4 LT |
111 | static signed char con2fb_map[MAX_NR_CONSOLES]; |
112 | static signed char con2fb_map_boot[MAX_NR_CONSOLES]; | |
113 | static int logo_height; | |
114 | static int logo_lines; | |
115 | /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO | |
116 | enums. */ | |
117 | static int logo_shown = FBCON_LOGO_CANSHOW; | |
118 | /* Software scrollback */ | |
119 | static int fbcon_softback_size = 32768; | |
120 | static unsigned long softback_buf, softback_curr; | |
121 | static unsigned long softback_in; | |
122 | static unsigned long softback_top, softback_end; | |
123 | static int softback_lines; | |
124 | /* console mappings */ | |
125 | static int first_fb_vc; | |
126 | static int last_fb_vc = MAX_NR_CONSOLES - 1; | |
127 | static int fbcon_is_default = 1; | |
128 | /* font data */ | |
129 | static char fontname[40]; | |
130 | ||
131 | /* current fb_info */ | |
132 | static int info_idx = -1; | |
133 | ||
e4fc2761 AD |
134 | /* console rotation */ |
135 | static int rotate; | |
136 | ||
1da177e4 LT |
137 | static const struct consw fb_con; |
138 | ||
139 | #define CM_SOFTBACK (8) | |
140 | ||
141 | #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) | |
142 | ||
143 | static void fbcon_free_font(struct display *); | |
144 | static int fbcon_set_origin(struct vc_data *); | |
145 | ||
146 | #define CURSOR_DRAW_DELAY (1) | |
147 | ||
148 | /* # VBL ints between cursor state changes */ | |
1da177e4 LT |
149 | #define ATARI_CURSOR_BLINK_RATE (42) |
150 | #define MAC_CURSOR_BLINK_RATE (32) | |
151 | #define DEFAULT_CURSOR_BLINK_RATE (20) | |
152 | ||
153 | static int vbl_cursor_cnt; | |
154 | ||
155 | #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) | |
156 | ||
157 | /* | |
158 | * Interface used by the world | |
159 | */ | |
160 | ||
161 | static const char *fbcon_startup(void); | |
162 | static void fbcon_init(struct vc_data *vc, int init); | |
163 | static void fbcon_deinit(struct vc_data *vc); | |
164 | static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, | |
165 | int width); | |
166 | static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); | |
167 | static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, | |
168 | int count, int ypos, int xpos); | |
169 | static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); | |
170 | static void fbcon_cursor(struct vc_data *vc, int mode); | |
171 | static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir, | |
172 | int count); | |
173 | static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, | |
174 | int height, int width); | |
175 | static int fbcon_switch(struct vc_data *vc); | |
176 | static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); | |
177 | static int fbcon_set_palette(struct vc_data *vc, unsigned char *table); | |
178 | static int fbcon_scrolldelta(struct vc_data *vc, int lines); | |
179 | ||
180 | /* | |
181 | * Internal routines | |
182 | */ | |
1da177e4 LT |
183 | static __inline__ void ywrap_up(struct vc_data *vc, int count); |
184 | static __inline__ void ywrap_down(struct vc_data *vc, int count); | |
185 | static __inline__ void ypan_up(struct vc_data *vc, int count); | |
186 | static __inline__ void ypan_down(struct vc_data *vc, int count); | |
187 | static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, | |
188 | int dy, int dx, int height, int width, u_int y_break); | |
189 | static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
190 | struct vc_data *vc); | |
191 | static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
192 | int unit); | |
193 | static void fbcon_redraw_move(struct vc_data *vc, struct display *p, | |
194 | int line, int count, int dy); | |
a812c94b AD |
195 | static void fbcon_modechanged(struct fb_info *info); |
196 | static void fbcon_set_all_vcs(struct fb_info *info); | |
1da177e4 LT |
197 | |
198 | #ifdef CONFIG_MAC | |
199 | /* | |
200 | * On the Macintoy, there may or may not be a working VBL int. We need to probe | |
201 | */ | |
202 | static int vbl_detected; | |
203 | ||
204 | static irqreturn_t fb_vbl_detect(int irq, void *dummy, struct pt_regs *fp) | |
205 | { | |
206 | vbl_detected++; | |
207 | return IRQ_HANDLED; | |
208 | } | |
209 | #endif | |
210 | ||
dbcbfe1e AD |
211 | #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION |
212 | static inline void fbcon_set_rotation(struct fb_info *info, struct display *p) | |
213 | { | |
214 | struct fbcon_ops *ops = info->fbcon_par; | |
215 | ||
216 | if (!(info->flags & FBINFO_MISC_TILEBLITTING) && | |
217 | p->con_rotate < 4) | |
218 | ops->rotate = p->con_rotate; | |
219 | else | |
220 | ops->rotate = 0; | |
221 | } | |
a812c94b AD |
222 | |
223 | static void fbcon_rotate(struct fb_info *info, u32 rotate) | |
224 | { | |
225 | struct fbcon_ops *ops= info->fbcon_par; | |
226 | struct fb_info *fb_info; | |
227 | ||
228 | if (!ops || ops->currcon == -1) | |
229 | return; | |
230 | ||
231 | fb_info = registered_fb[con2fb_map[ops->currcon]]; | |
232 | ||
233 | if (info == fb_info) { | |
234 | struct display *p = &fb_display[ops->currcon]; | |
235 | ||
236 | if (rotate < 4) | |
237 | p->con_rotate = rotate; | |
238 | else | |
239 | p->con_rotate = 0; | |
240 | ||
241 | fbcon_modechanged(info); | |
242 | } | |
243 | } | |
244 | ||
245 | static void fbcon_rotate_all(struct fb_info *info, u32 rotate) | |
246 | { | |
247 | struct fbcon_ops *ops = info->fbcon_par; | |
248 | struct vc_data *vc; | |
249 | struct display *p; | |
250 | int i; | |
251 | ||
252 | if (!ops || ops->currcon < 0 || rotate > 3) | |
253 | return; | |
254 | ||
255 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
256 | vc = vc_cons[i].d; | |
257 | if (!vc || vc->vc_mode != KD_TEXT || | |
258 | registered_fb[con2fb_map[i]] != info) | |
259 | continue; | |
260 | ||
261 | p = &fb_display[vc->vc_num]; | |
262 | p->con_rotate = rotate; | |
263 | } | |
264 | ||
265 | fbcon_set_all_vcs(info); | |
266 | } | |
dbcbfe1e | 267 | #else |
e4fc2761 AD |
268 | static inline void fbcon_set_rotation(struct fb_info *info, struct display *p) |
269 | { | |
270 | struct fbcon_ops *ops = info->fbcon_par; | |
271 | ||
272 | ops->rotate = FB_ROTATE_UR; | |
273 | } | |
a812c94b AD |
274 | |
275 | static void fbcon_rotate(struct fb_info *info, u32 rotate) | |
276 | { | |
277 | return; | |
278 | } | |
279 | ||
280 | static void fbcon_rotate_all(struct fb_info *info, u32 rotate) | |
281 | { | |
282 | return; | |
283 | } | |
dbcbfe1e | 284 | #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ |
e4fc2761 | 285 | |
a812c94b AD |
286 | static int fbcon_get_rotate(struct fb_info *info) |
287 | { | |
288 | struct fbcon_ops *ops = info->fbcon_par; | |
289 | ||
290 | return (ops) ? ops->rotate : 0; | |
291 | } | |
292 | ||
1da177e4 LT |
293 | static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) |
294 | { | |
295 | struct fbcon_ops *ops = info->fbcon_par; | |
296 | ||
297 | return (info->state != FBINFO_STATE_RUNNING || | |
298 | vc->vc_mode != KD_TEXT || ops->graphics); | |
299 | } | |
300 | ||
301 | static inline int get_color(struct vc_data *vc, struct fb_info *info, | |
302 | u16 c, int is_fg) | |
303 | { | |
b8c90945 | 304 | int depth = fb_get_color_depth(&info->var, &info->fix); |
1da177e4 LT |
305 | int color = 0; |
306 | ||
307 | if (console_blanked) { | |
308 | unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; | |
309 | ||
310 | c = vc->vc_video_erase_char & charmask; | |
311 | } | |
312 | ||
313 | if (depth != 1) | |
314 | color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) | |
315 | : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); | |
316 | ||
317 | switch (depth) { | |
318 | case 1: | |
319 | { | |
b8c90945 AD |
320 | int col = ~(0xfff << (max(info->var.green.length, |
321 | max(info->var.red.length, | |
322 | info->var.blue.length)))) & 0xff; | |
323 | ||
1da177e4 | 324 | /* 0 or 1 */ |
b8c90945 AD |
325 | int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; |
326 | int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; | |
1da177e4 LT |
327 | |
328 | if (console_blanked) | |
329 | fg = bg; | |
330 | ||
331 | color = (is_fg) ? fg : bg; | |
332 | break; | |
333 | } | |
334 | case 2: | |
335 | /* | |
336 | * Scale down 16-colors to 4 colors. Default 4-color palette | |
2cc38ed1 AD |
337 | * is grayscale. However, simply dividing the values by 4 |
338 | * will not work, as colors 1, 2 and 3 will be scaled-down | |
339 | * to zero rendering them invisible. So empirically convert | |
340 | * colors to a sane 4-level grayscale. | |
1da177e4 | 341 | */ |
2cc38ed1 AD |
342 | switch (color) { |
343 | case 0: | |
344 | color = 0; /* black */ | |
345 | break; | |
346 | case 1 ... 6: | |
347 | color = 2; /* white */ | |
348 | break; | |
349 | case 7 ... 8: | |
350 | color = 1; /* gray */ | |
351 | break; | |
352 | default: | |
353 | color = 3; /* intense white */ | |
354 | break; | |
355 | } | |
356 | break; | |
1da177e4 LT |
357 | case 3: |
358 | /* | |
359 | * Last 8 entries of default 16-color palette is a more intense | |
360 | * version of the first 8 (i.e., same chrominance, different | |
361 | * luminance). | |
362 | */ | |
363 | color &= 7; | |
364 | break; | |
365 | } | |
366 | ||
367 | ||
368 | return color; | |
369 | } | |
370 | ||
4d9c5b6e AD |
371 | static void fbcon_update_softback(struct vc_data *vc) |
372 | { | |
373 | int l = fbcon_softback_size / vc->vc_size_row; | |
374 | ||
375 | if (l > 5) | |
376 | softback_end = softback_buf + l * vc->vc_size_row; | |
377 | else | |
378 | /* Smaller scrollback makes no sense, and 0 would screw | |
379 | the operation totally */ | |
380 | softback_top = 0; | |
381 | } | |
382 | ||
1da177e4 LT |
383 | static void fb_flashcursor(void *private) |
384 | { | |
385 | struct fb_info *info = private; | |
386 | struct fbcon_ops *ops = info->fbcon_par; | |
387 | struct display *p; | |
388 | struct vc_data *vc = NULL; | |
389 | int c; | |
390 | int mode; | |
391 | ||
392 | if (ops->currcon != -1) | |
393 | vc = vc_cons[ops->currcon].d; | |
394 | ||
395 | if (!vc || !CON_IS_VISIBLE(vc) || | |
396 | fbcon_is_inactive(vc, info) || | |
dbd4f128 MJ |
397 | registered_fb[con2fb_map[vc->vc_num]] != info || |
398 | vc_cons[ops->currcon].d->vc_deccm != 1) | |
1da177e4 LT |
399 | return; |
400 | acquire_console_sem(); | |
401 | p = &fb_display[vc->vc_num]; | |
402 | c = scr_readw((u16 *) vc->vc_pos); | |
403 | mode = (!ops->cursor_flash || ops->cursor_state.enable) ? | |
404 | CM_ERASE : CM_DRAW; | |
405 | ops->cursor(vc, info, p, mode, softback_lines, get_color(vc, info, c, 1), | |
406 | get_color(vc, info, c, 0)); | |
407 | release_console_sem(); | |
408 | } | |
409 | ||
41359dca | 410 | #if defined(CONFIG_ATARI) || defined(CONFIG_MAC) |
1da177e4 LT |
411 | static int cursor_blink_rate; |
412 | static irqreturn_t fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp) | |
413 | { | |
414 | struct fb_info *info = dev_id; | |
415 | ||
416 | if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) { | |
417 | schedule_work(&info->queue); | |
418 | vbl_cursor_cnt = cursor_blink_rate; | |
419 | } | |
420 | return IRQ_HANDLED; | |
421 | } | |
422 | #endif | |
423 | ||
424 | static void cursor_timer_handler(unsigned long dev_addr) | |
425 | { | |
426 | struct fb_info *info = (struct fb_info *) dev_addr; | |
427 | struct fbcon_ops *ops = info->fbcon_par; | |
428 | ||
429 | schedule_work(&info->queue); | |
430 | mod_timer(&ops->cursor_timer, jiffies + HZ/5); | |
431 | } | |
432 | ||
88fb2c6e AD |
433 | static void fbcon_add_cursor_timer(struct fb_info *info) |
434 | { | |
435 | struct fbcon_ops *ops = info->fbcon_par; | |
436 | ||
437 | if ((!info->queue.func || info->queue.func == fb_flashcursor) && | |
438 | !(ops->flags & FBCON_FLAGS_CURSOR_TIMER)) { | |
439 | if (!info->queue.func) | |
440 | INIT_WORK(&info->queue, fb_flashcursor, info); | |
441 | ||
442 | init_timer(&ops->cursor_timer); | |
443 | ops->cursor_timer.function = cursor_timer_handler; | |
444 | ops->cursor_timer.expires = jiffies + HZ / 5; | |
445 | ops->cursor_timer.data = (unsigned long ) info; | |
446 | add_timer(&ops->cursor_timer); | |
447 | ops->flags |= FBCON_FLAGS_CURSOR_TIMER; | |
448 | } | |
449 | } | |
450 | ||
451 | static void fbcon_del_cursor_timer(struct fb_info *info) | |
452 | { | |
453 | struct fbcon_ops *ops = info->fbcon_par; | |
454 | ||
455 | if (info->queue.func == fb_flashcursor && | |
456 | ops->flags & FBCON_FLAGS_CURSOR_TIMER) { | |
457 | del_timer_sync(&ops->cursor_timer); | |
458 | ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; | |
459 | } | |
460 | } | |
461 | ||
1da177e4 LT |
462 | #ifndef MODULE |
463 | static int __init fb_console_setup(char *this_opt) | |
464 | { | |
465 | char *options; | |
466 | int i, j; | |
467 | ||
468 | if (!this_opt || !*this_opt) | |
469 | return 0; | |
470 | ||
471 | while ((options = strsep(&this_opt, ",")) != NULL) { | |
472 | if (!strncmp(options, "font:", 5)) | |
473 | strcpy(fontname, options + 5); | |
474 | ||
475 | if (!strncmp(options, "scrollback:", 11)) { | |
476 | options += 11; | |
477 | if (*options) { | |
478 | fbcon_softback_size = simple_strtoul(options, &options, 0); | |
479 | if (*options == 'k' || *options == 'K') { | |
480 | fbcon_softback_size *= 1024; | |
481 | options++; | |
482 | } | |
483 | if (*options != ',') | |
484 | return 0; | |
485 | options++; | |
486 | } else | |
487 | return 0; | |
488 | } | |
489 | ||
490 | if (!strncmp(options, "map:", 4)) { | |
491 | options += 4; | |
492 | if (*options) | |
493 | for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { | |
494 | if (!options[j]) | |
495 | j = 0; | |
496 | con2fb_map_boot[i] = | |
497 | (options[j++]-'0') % FB_MAX; | |
498 | } | |
499 | return 0; | |
500 | } | |
501 | ||
502 | if (!strncmp(options, "vc:", 3)) { | |
503 | options += 3; | |
504 | if (*options) | |
505 | first_fb_vc = simple_strtoul(options, &options, 10) - 1; | |
506 | if (first_fb_vc < 0) | |
507 | first_fb_vc = 0; | |
508 | if (*options++ == '-') | |
509 | last_fb_vc = simple_strtoul(options, &options, 10) - 1; | |
510 | fbcon_is_default = 0; | |
511 | } | |
e4fc2761 AD |
512 | |
513 | if (!strncmp(options, "rotate:", 7)) { | |
514 | options += 7; | |
515 | if (*options) | |
516 | rotate = simple_strtoul(options, &options, 0); | |
517 | if (rotate > 3) | |
518 | rotate = 0; | |
519 | } | |
1da177e4 LT |
520 | } |
521 | return 0; | |
522 | } | |
523 | ||
524 | __setup("fbcon=", fb_console_setup); | |
525 | #endif | |
526 | ||
527 | static int search_fb_in_map(int idx) | |
528 | { | |
529 | int i, retval = 0; | |
530 | ||
531 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
532 | if (con2fb_map[i] == idx) | |
533 | retval = 1; | |
534 | } | |
535 | return retval; | |
536 | } | |
537 | ||
538 | static int search_for_mapped_con(void) | |
539 | { | |
540 | int i, retval = 0; | |
541 | ||
542 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
543 | if (con2fb_map[i] != -1) | |
544 | retval = 1; | |
545 | } | |
546 | return retval; | |
547 | } | |
548 | ||
549 | static int fbcon_takeover(int show_logo) | |
550 | { | |
551 | int err, i; | |
552 | ||
553 | if (!num_registered_fb) | |
554 | return -ENODEV; | |
555 | ||
556 | if (!show_logo) | |
557 | logo_shown = FBCON_LOGO_DONTSHOW; | |
558 | ||
559 | for (i = first_fb_vc; i <= last_fb_vc; i++) | |
560 | con2fb_map[i] = info_idx; | |
561 | ||
562 | err = take_over_console(&fb_con, first_fb_vc, last_fb_vc, | |
563 | fbcon_is_default); | |
564 | if (err) { | |
565 | for (i = first_fb_vc; i <= last_fb_vc; i++) { | |
566 | con2fb_map[i] = -1; | |
567 | } | |
568 | info_idx = -1; | |
569 | } | |
570 | ||
571 | return err; | |
572 | } | |
573 | ||
574 | static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, | |
575 | int cols, int rows, int new_cols, int new_rows) | |
576 | { | |
577 | /* Need to make room for the logo */ | |
9c44e5f6 | 578 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
579 | int cnt, erase = vc->vc_video_erase_char, step; |
580 | unsigned short *save = NULL, *r, *q; | |
581 | ||
582 | /* | |
583 | * remove underline attribute from erase character | |
584 | * if black and white framebuffer. | |
585 | */ | |
b8c90945 | 586 | if (fb_get_color_depth(&info->var, &info->fix) == 1) |
1da177e4 | 587 | erase &= ~0x400; |
9c44e5f6 | 588 | logo_height = fb_prepare_logo(info, ops->rotate); |
1da177e4 LT |
589 | logo_lines = (logo_height + vc->vc_font.height - 1) / |
590 | vc->vc_font.height; | |
591 | q = (unsigned short *) (vc->vc_origin + | |
592 | vc->vc_size_row * rows); | |
593 | step = logo_lines * cols; | |
594 | for (r = q - logo_lines * cols; r < q; r++) | |
595 | if (scr_readw(r) != vc->vc_video_erase_char) | |
596 | break; | |
597 | if (r != q && new_rows >= rows + logo_lines) { | |
598 | save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL); | |
599 | if (save) { | |
600 | int i = cols < new_cols ? cols : new_cols; | |
601 | scr_memsetw(save, erase, logo_lines * new_cols * 2); | |
602 | r = q - step; | |
603 | for (cnt = 0; cnt < logo_lines; cnt++, r += i) | |
604 | scr_memcpyw(save + cnt * new_cols, r, 2 * i); | |
605 | r = q; | |
606 | } | |
607 | } | |
608 | if (r == q) { | |
609 | /* We can scroll screen down */ | |
610 | r = q - step - cols; | |
611 | for (cnt = rows - logo_lines; cnt > 0; cnt--) { | |
612 | scr_memcpyw(r + step, r, vc->vc_size_row); | |
613 | r -= cols; | |
614 | } | |
615 | if (!save) { | |
616 | vc->vc_y += logo_lines; | |
617 | vc->vc_pos += logo_lines * vc->vc_size_row; | |
618 | } | |
619 | } | |
620 | scr_memsetw((unsigned short *) vc->vc_origin, | |
621 | erase, | |
622 | vc->vc_size_row * logo_lines); | |
623 | ||
624 | if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) { | |
625 | fbcon_clear_margins(vc, 0); | |
626 | update_screen(vc); | |
627 | } | |
628 | ||
629 | if (save) { | |
630 | q = (unsigned short *) (vc->vc_origin + | |
631 | vc->vc_size_row * | |
632 | rows); | |
633 | scr_memcpyw(q, save, logo_lines * new_cols * 2); | |
634 | vc->vc_y += logo_lines; | |
635 | vc->vc_pos += logo_lines * vc->vc_size_row; | |
636 | kfree(save); | |
637 | } | |
638 | ||
639 | if (logo_lines > vc->vc_bottom) { | |
640 | logo_shown = FBCON_LOGO_CANSHOW; | |
641 | printk(KERN_INFO | |
642 | "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); | |
643 | } else if (logo_shown != FBCON_LOGO_DONTSHOW) { | |
644 | logo_shown = FBCON_LOGO_DRAW; | |
645 | vc->vc_top = logo_lines; | |
646 | } | |
647 | } | |
648 | ||
649 | #ifdef CONFIG_FB_TILEBLITTING | |
650 | static void set_blitting_type(struct vc_data *vc, struct fb_info *info, | |
651 | struct display *p) | |
652 | { | |
653 | struct fbcon_ops *ops = info->fbcon_par; | |
654 | ||
ab767201 AD |
655 | ops->p = (p) ? p : &fb_display[vc->vc_num]; |
656 | ||
1da177e4 LT |
657 | if ((info->flags & FBINFO_MISC_TILEBLITTING)) |
658 | fbcon_set_tileops(vc, info, p, ops); | |
e4fc2761 | 659 | else { |
ab767201 | 660 | fbcon_set_rotation(info, ops->p); |
1da177e4 | 661 | fbcon_set_bitops(ops); |
e4fc2761 | 662 | } |
1da177e4 LT |
663 | } |
664 | #else | |
665 | static void set_blitting_type(struct vc_data *vc, struct fb_info *info, | |
666 | struct display *p) | |
667 | { | |
668 | struct fbcon_ops *ops = info->fbcon_par; | |
669 | ||
670 | info->flags &= ~FBINFO_MISC_TILEBLITTING; | |
ab767201 AD |
671 | ops->p = (p) ? p : &fb_display[vc->vc_num]; |
672 | fbcon_set_rotation(info, ops->p); | |
1da177e4 LT |
673 | fbcon_set_bitops(ops); |
674 | } | |
675 | #endif /* CONFIG_MISC_TILEBLITTING */ | |
676 | ||
677 | ||
678 | static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, | |
679 | int unit, int oldidx) | |
680 | { | |
681 | struct fbcon_ops *ops = NULL; | |
682 | int err = 0; | |
683 | ||
684 | if (!try_module_get(info->fbops->owner)) | |
685 | err = -ENODEV; | |
686 | ||
687 | if (!err && info->fbops->fb_open && | |
688 | info->fbops->fb_open(info, 0)) | |
689 | err = -ENODEV; | |
690 | ||
691 | if (!err) { | |
692 | ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL); | |
693 | if (!ops) | |
694 | err = -ENOMEM; | |
695 | } | |
696 | ||
697 | if (!err) { | |
698 | memset(ops, 0, sizeof(struct fbcon_ops)); | |
699 | info->fbcon_par = ops; | |
700 | set_blitting_type(vc, info, NULL); | |
701 | } | |
702 | ||
703 | if (err) { | |
704 | con2fb_map[unit] = oldidx; | |
705 | module_put(info->fbops->owner); | |
706 | } | |
707 | ||
708 | return err; | |
709 | } | |
710 | ||
711 | static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, | |
712 | struct fb_info *newinfo, int unit, | |
713 | int oldidx, int found) | |
714 | { | |
715 | struct fbcon_ops *ops = oldinfo->fbcon_par; | |
716 | int err = 0; | |
717 | ||
718 | if (oldinfo->fbops->fb_release && | |
719 | oldinfo->fbops->fb_release(oldinfo, 0)) { | |
720 | con2fb_map[unit] = oldidx; | |
721 | if (!found && newinfo->fbops->fb_release) | |
722 | newinfo->fbops->fb_release(newinfo, 0); | |
723 | if (!found) | |
724 | module_put(newinfo->fbops->owner); | |
725 | err = -ENODEV; | |
726 | } | |
727 | ||
728 | if (!err) { | |
88fb2c6e | 729 | fbcon_del_cursor_timer(oldinfo); |
1da177e4 LT |
730 | kfree(ops->cursor_state.mask); |
731 | kfree(ops->cursor_data); | |
e4fc2761 | 732 | kfree(ops->fontbuffer); |
1da177e4 LT |
733 | kfree(oldinfo->fbcon_par); |
734 | oldinfo->fbcon_par = NULL; | |
735 | module_put(oldinfo->fbops->owner); | |
dd0314f7 AD |
736 | /* |
737 | If oldinfo and newinfo are driving the same hardware, | |
738 | the fb_release() method of oldinfo may attempt to | |
739 | restore the hardware state. This will leave the | |
740 | newinfo in an undefined state. Thus, a call to | |
741 | fb_set_par() may be needed for the newinfo. | |
742 | */ | |
743 | if (newinfo->fbops->fb_set_par) | |
744 | newinfo->fbops->fb_set_par(newinfo); | |
1da177e4 LT |
745 | } |
746 | ||
747 | return err; | |
748 | } | |
749 | ||
1da177e4 LT |
750 | static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, |
751 | int unit, int show_logo) | |
752 | { | |
753 | struct fbcon_ops *ops = info->fbcon_par; | |
754 | ||
755 | ops->currcon = fg_console; | |
756 | ||
757 | if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) | |
758 | info->fbops->fb_set_par(info); | |
759 | ||
760 | ops->flags |= FBCON_FLAGS_INIT; | |
761 | ops->graphics = 0; | |
762 | ||
763 | if (vc) | |
764 | fbcon_set_disp(info, &info->var, vc); | |
765 | else | |
766 | fbcon_preset_disp(info, &info->var, unit); | |
767 | ||
768 | if (show_logo) { | |
769 | struct vc_data *fg_vc = vc_cons[fg_console].d; | |
770 | struct fb_info *fg_info = | |
771 | registered_fb[con2fb_map[fg_console]]; | |
772 | ||
773 | fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, | |
774 | fg_vc->vc_rows, fg_vc->vc_cols, | |
775 | fg_vc->vc_rows); | |
776 | } | |
777 | ||
778 | update_screen(vc_cons[fg_console].d); | |
779 | } | |
780 | ||
781 | /** | |
782 | * set_con2fb_map - map console to frame buffer device | |
783 | * @unit: virtual console number to map | |
784 | * @newidx: frame buffer index to map virtual console to | |
785 | * @user: user request | |
786 | * | |
787 | * Maps a virtual console @unit to a frame buffer device | |
788 | * @newidx. | |
789 | */ | |
790 | static int set_con2fb_map(int unit, int newidx, int user) | |
791 | { | |
792 | struct vc_data *vc = vc_cons[unit].d; | |
793 | int oldidx = con2fb_map[unit]; | |
794 | struct fb_info *info = registered_fb[newidx]; | |
795 | struct fb_info *oldinfo = NULL; | |
796 | int found, err = 0; | |
797 | ||
798 | if (oldidx == newidx) | |
799 | return 0; | |
800 | ||
801 | if (!info) | |
802 | err = -EINVAL; | |
803 | ||
804 | if (!err && !search_for_mapped_con()) { | |
805 | info_idx = newidx; | |
806 | return fbcon_takeover(0); | |
807 | } | |
808 | ||
809 | if (oldidx != -1) | |
810 | oldinfo = registered_fb[oldidx]; | |
811 | ||
812 | found = search_fb_in_map(newidx); | |
813 | ||
814 | acquire_console_sem(); | |
815 | con2fb_map[unit] = newidx; | |
816 | if (!err && !found) | |
817 | err = con2fb_acquire_newinfo(vc, info, unit, oldidx); | |
818 | ||
819 | ||
820 | /* | |
821 | * If old fb is not mapped to any of the consoles, | |
822 | * fbcon should release it. | |
823 | */ | |
824 | if (!err && oldinfo && !search_fb_in_map(oldidx)) | |
825 | err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, | |
826 | found); | |
827 | ||
828 | if (!err) { | |
829 | int show_logo = (fg_console == 0 && !user && | |
830 | logo_shown != FBCON_LOGO_DONTSHOW); | |
831 | ||
832 | if (!found) | |
88fb2c6e | 833 | fbcon_add_cursor_timer(info); |
1da177e4 LT |
834 | con2fb_map_boot[unit] = newidx; |
835 | con2fb_init_display(vc, info, unit, show_logo); | |
836 | } | |
837 | ||
838 | release_console_sem(); | |
839 | return err; | |
840 | } | |
841 | ||
842 | /* | |
843 | * Low Level Operations | |
844 | */ | |
845 | /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */ | |
846 | static int var_to_display(struct display *disp, | |
847 | struct fb_var_screeninfo *var, | |
848 | struct fb_info *info) | |
849 | { | |
850 | disp->xres_virtual = var->xres_virtual; | |
851 | disp->yres_virtual = var->yres_virtual; | |
852 | disp->bits_per_pixel = var->bits_per_pixel; | |
853 | disp->grayscale = var->grayscale; | |
854 | disp->nonstd = var->nonstd; | |
855 | disp->accel_flags = var->accel_flags; | |
856 | disp->height = var->height; | |
857 | disp->width = var->width; | |
858 | disp->red = var->red; | |
859 | disp->green = var->green; | |
860 | disp->blue = var->blue; | |
861 | disp->transp = var->transp; | |
862 | disp->rotate = var->rotate; | |
863 | disp->mode = fb_match_mode(var, &info->modelist); | |
864 | if (disp->mode == NULL) | |
865 | /* This should not happen */ | |
866 | return -EINVAL; | |
867 | return 0; | |
868 | } | |
869 | ||
870 | static void display_to_var(struct fb_var_screeninfo *var, | |
871 | struct display *disp) | |
872 | { | |
873 | fb_videomode_to_var(var, disp->mode); | |
874 | var->xres_virtual = disp->xres_virtual; | |
875 | var->yres_virtual = disp->yres_virtual; | |
876 | var->bits_per_pixel = disp->bits_per_pixel; | |
877 | var->grayscale = disp->grayscale; | |
878 | var->nonstd = disp->nonstd; | |
879 | var->accel_flags = disp->accel_flags; | |
880 | var->height = disp->height; | |
881 | var->width = disp->width; | |
882 | var->red = disp->red; | |
883 | var->green = disp->green; | |
884 | var->blue = disp->blue; | |
885 | var->transp = disp->transp; | |
886 | var->rotate = disp->rotate; | |
887 | } | |
888 | ||
889 | static const char *fbcon_startup(void) | |
890 | { | |
891 | const char *display_desc = "frame buffer device"; | |
892 | struct display *p = &fb_display[fg_console]; | |
893 | struct vc_data *vc = vc_cons[fg_console].d; | |
2f4516db | 894 | const struct font_desc *font = NULL; |
1da177e4 LT |
895 | struct module *owner; |
896 | struct fb_info *info = NULL; | |
897 | struct fbcon_ops *ops; | |
898 | int rows, cols; | |
899 | int irqres; | |
900 | ||
901 | irqres = 1; | |
902 | /* | |
903 | * If num_registered_fb is zero, this is a call for the dummy part. | |
904 | * The frame buffer devices weren't initialized yet. | |
905 | */ | |
906 | if (!num_registered_fb || info_idx == -1) | |
907 | return display_desc; | |
908 | /* | |
909 | * Instead of blindly using registered_fb[0], we use info_idx, set by | |
910 | * fb_console_init(); | |
911 | */ | |
912 | info = registered_fb[info_idx]; | |
913 | if (!info) | |
914 | return NULL; | |
915 | ||
916 | owner = info->fbops->owner; | |
917 | if (!try_module_get(owner)) | |
918 | return NULL; | |
919 | if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { | |
920 | module_put(owner); | |
921 | return NULL; | |
922 | } | |
923 | ||
924 | ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL); | |
925 | if (!ops) { | |
926 | module_put(owner); | |
927 | return NULL; | |
928 | } | |
929 | ||
930 | memset(ops, 0, sizeof(struct fbcon_ops)); | |
931 | ops->currcon = -1; | |
932 | ops->graphics = 1; | |
e4fc2761 | 933 | ops->cur_rotate = -1; |
1da177e4 | 934 | info->fbcon_par = ops; |
e4fc2761 | 935 | p->con_rotate = rotate; |
1da177e4 LT |
936 | set_blitting_type(vc, info, NULL); |
937 | ||
938 | if (info->fix.type != FB_TYPE_TEXT) { | |
939 | if (fbcon_softback_size) { | |
940 | if (!softback_buf) { | |
941 | softback_buf = | |
942 | (unsigned long) | |
943 | kmalloc(fbcon_softback_size, | |
944 | GFP_KERNEL); | |
945 | if (!softback_buf) { | |
946 | fbcon_softback_size = 0; | |
947 | softback_top = 0; | |
948 | } | |
949 | } | |
950 | } else { | |
951 | if (softback_buf) { | |
952 | kfree((void *) softback_buf); | |
953 | softback_buf = 0; | |
954 | softback_top = 0; | |
955 | } | |
956 | } | |
957 | if (softback_buf) | |
958 | softback_in = softback_top = softback_curr = | |
959 | softback_buf; | |
960 | softback_lines = 0; | |
961 | } | |
962 | ||
963 | /* Setup default font */ | |
964 | if (!p->fontdata) { | |
965 | if (!fontname[0] || !(font = find_font(fontname))) | |
966 | font = get_default_font(info->var.xres, | |
967 | info->var.yres); | |
968 | vc->vc_font.width = font->width; | |
969 | vc->vc_font.height = font->height; | |
2f4516db | 970 | vc->vc_font.data = (void *)(p->fontdata = font->data); |
1da177e4 LT |
971 | vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ |
972 | } | |
973 | ||
e4fc2761 AD |
974 | cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
975 | rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); | |
976 | cols /= vc->vc_font.width; | |
977 | rows /= vc->vc_font.height; | |
1da177e4 LT |
978 | vc_resize(vc, cols, rows); |
979 | ||
980 | DPRINTK("mode: %s\n", info->fix.id); | |
981 | DPRINTK("visual: %d\n", info->fix.visual); | |
982 | DPRINTK("res: %dx%d-%d\n", info->var.xres, | |
983 | info->var.yres, | |
984 | info->var.bits_per_pixel); | |
985 | ||
986 | #ifdef CONFIG_ATARI | |
987 | if (MACH_IS_ATARI) { | |
988 | cursor_blink_rate = ATARI_CURSOR_BLINK_RATE; | |
989 | irqres = | |
990 | request_irq(IRQ_AUTO_4, fb_vbl_handler, | |
991 | IRQ_TYPE_PRIO, "framebuffer vbl", | |
992 | info); | |
993 | } | |
994 | #endif /* CONFIG_ATARI */ | |
995 | ||
996 | #ifdef CONFIG_MAC | |
997 | /* | |
998 | * On a Macintoy, the VBL interrupt may or may not be active. | |
999 | * As interrupt based cursor is more reliable and race free, we | |
1000 | * probe for VBL interrupts. | |
1001 | */ | |
1002 | if (MACH_IS_MAC) { | |
1003 | int ct = 0; | |
1004 | /* | |
1005 | * Probe for VBL: set temp. handler ... | |
1006 | */ | |
1007 | irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0, | |
1008 | "framebuffer vbl", info); | |
1009 | vbl_detected = 0; | |
1010 | ||
1011 | /* | |
1012 | * ... and spin for 20 ms ... | |
1013 | */ | |
1014 | while (!vbl_detected && ++ct < 1000) | |
1015 | udelay(20); | |
1016 | ||
1017 | if (ct == 1000) | |
1018 | printk | |
1019 | ("fbcon_startup: No VBL detected, using timer based cursor.\n"); | |
1020 | ||
1021 | free_irq(IRQ_MAC_VBL, fb_vbl_detect); | |
1022 | ||
1023 | if (vbl_detected) { | |
1024 | /* | |
1025 | * interrupt based cursor ok | |
1026 | */ | |
1027 | cursor_blink_rate = MAC_CURSOR_BLINK_RATE; | |
1028 | irqres = | |
1029 | request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0, | |
1030 | "framebuffer vbl", info); | |
1031 | } else { | |
1032 | /* | |
1033 | * VBL not detected: fall through, use timer based cursor | |
1034 | */ | |
1035 | irqres = 1; | |
1036 | } | |
1037 | } | |
1038 | #endif /* CONFIG_MAC */ | |
1039 | ||
88fb2c6e | 1040 | fbcon_add_cursor_timer(info); |
1da177e4 LT |
1041 | return display_desc; |
1042 | } | |
1043 | ||
1044 | static void fbcon_init(struct vc_data *vc, int init) | |
1045 | { | |
1046 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1047 | struct fbcon_ops *ops; | |
1048 | struct vc_data **default_mode = vc->vc_display_fg; | |
1049 | struct vc_data *svc = *default_mode; | |
1050 | struct display *t, *p = &fb_display[vc->vc_num]; | |
1051 | int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; | |
306958e8 | 1052 | int cap; |
1da177e4 LT |
1053 | |
1054 | if (info_idx == -1 || info == NULL) | |
1055 | return; | |
306958e8 AB |
1056 | |
1057 | cap = info->flags; | |
1058 | ||
1da177e4 LT |
1059 | if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || |
1060 | (info->fix.type == FB_TYPE_TEXT)) | |
1061 | logo = 0; | |
1062 | ||
1da177e4 LT |
1063 | if (var_to_display(p, &info->var, info)) |
1064 | return; | |
1065 | ||
1066 | /* If we are not the first console on this | |
1067 | fb, copy the font from that console */ | |
1068 | t = &fb_display[svc->vc_num]; | |
1069 | if (!vc->vc_font.data) { | |
2f4516db | 1070 | vc->vc_font.data = (void *)(p->fontdata = t->fontdata); |
1da177e4 LT |
1071 | vc->vc_font.width = (*default_mode)->vc_font.width; |
1072 | vc->vc_font.height = (*default_mode)->vc_font.height; | |
1073 | p->userfont = t->userfont; | |
1074 | if (p->userfont) | |
1075 | REFCOUNT(p->fontdata)++; | |
1076 | } | |
1077 | if (p->userfont) | |
1078 | charcnt = FNTCHARCNT(p->fontdata); | |
b8c90945 | 1079 | vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); |
1da177e4 LT |
1080 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; |
1081 | if (charcnt == 256) { | |
1082 | vc->vc_hi_font_mask = 0; | |
1083 | } else { | |
1084 | vc->vc_hi_font_mask = 0x100; | |
1085 | if (vc->vc_can_do_color) | |
1086 | vc->vc_complement_mask <<= 1; | |
1087 | } | |
1088 | ||
1089 | if (!*svc->vc_uni_pagedir_loc) | |
1090 | con_set_default_unimap(svc); | |
1091 | if (!*vc->vc_uni_pagedir_loc) | |
1092 | con_copy_unimap(vc, svc); | |
1093 | ||
e4fc2761 AD |
1094 | ops = info->fbcon_par; |
1095 | p->con_rotate = rotate; | |
1096 | set_blitting_type(vc, info, NULL); | |
1097 | ||
1da177e4 LT |
1098 | cols = vc->vc_cols; |
1099 | rows = vc->vc_rows; | |
e4fc2761 AD |
1100 | new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
1101 | new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); | |
1102 | new_cols /= vc->vc_font.width; | |
1103 | new_rows /= vc->vc_font.height; | |
1da177e4 LT |
1104 | vc_resize(vc, new_cols, new_rows); |
1105 | ||
1da177e4 LT |
1106 | /* |
1107 | * We must always set the mode. The mode of the previous console | |
1108 | * driver could be in the same resolution but we are using different | |
1109 | * hardware so we have to initialize the hardware. | |
1110 | * | |
1111 | * We need to do it in fbcon_init() to prevent screen corruption. | |
1112 | */ | |
1113 | if (CON_IS_VISIBLE(vc)) { | |
1114 | if (info->fbops->fb_set_par && | |
1115 | !(ops->flags & FBCON_FLAGS_INIT)) | |
1116 | info->fbops->fb_set_par(info); | |
1117 | ops->flags |= FBCON_FLAGS_INIT; | |
1118 | } | |
1119 | ||
1120 | ops->graphics = 0; | |
1121 | ||
1122 | if ((cap & FBINFO_HWACCEL_COPYAREA) && | |
1123 | !(cap & FBINFO_HWACCEL_DISABLED)) | |
1124 | p->scrollmode = SCROLL_MOVE; | |
1125 | else /* default to something safe */ | |
1126 | p->scrollmode = SCROLL_REDRAW; | |
1127 | ||
1128 | /* | |
1129 | * ++guenther: console.c:vc_allocate() relies on initializing | |
1130 | * vc_{cols,rows}, but we must not set those if we are only | |
1131 | * resizing the console. | |
1132 | */ | |
1133 | if (!init) { | |
1134 | vc->vc_cols = new_cols; | |
1135 | vc->vc_rows = new_rows; | |
1136 | } | |
1137 | ||
1138 | if (logo) | |
1139 | fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); | |
1140 | ||
4d9c5b6e AD |
1141 | if (vc == svc && softback_buf) |
1142 | fbcon_update_softback(vc); | |
e4fc2761 AD |
1143 | |
1144 | if (ops->rotate_font && ops->rotate_font(info, vc, p)) { | |
1145 | ops->rotate = FB_ROTATE_UR; | |
1146 | set_blitting_type(vc, info, p); | |
1147 | } | |
1148 | ||
1da177e4 LT |
1149 | } |
1150 | ||
1151 | static void fbcon_deinit(struct vc_data *vc) | |
1152 | { | |
1153 | struct display *p = &fb_display[vc->vc_num]; | |
1154 | ||
1155 | if (info_idx != -1) | |
1156 | return; | |
1157 | fbcon_free_font(p); | |
1158 | } | |
1159 | ||
1160 | /* ====================================================================== */ | |
1161 | ||
1162 | /* fbcon_XXX routines - interface used by the world | |
1163 | * | |
1164 | * This system is now divided into two levels because of complications | |
1165 | * caused by hardware scrolling. Top level functions: | |
1166 | * | |
1167 | * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() | |
1168 | * | |
1169 | * handles y values in range [0, scr_height-1] that correspond to real | |
1170 | * screen positions. y_wrap shift means that first line of bitmap may be | |
1171 | * anywhere on this display. These functions convert lineoffsets to | |
1172 | * bitmap offsets and deal with the wrap-around case by splitting blits. | |
1173 | * | |
1174 | * fbcon_bmove_physical_8() -- These functions fast implementations | |
1175 | * fbcon_clear_physical_8() -- of original fbcon_XXX fns. | |
1176 | * fbcon_putc_physical_8() -- (font width != 8) may be added later | |
1177 | * | |
1178 | * WARNING: | |
1179 | * | |
1180 | * At the moment fbcon_putc() cannot blit across vertical wrap boundary | |
1181 | * Implies should only really hardware scroll in rows. Only reason for | |
1182 | * restriction is simplicity & efficiency at the moment. | |
1183 | */ | |
1184 | ||
1da177e4 LT |
1185 | static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, |
1186 | int width) | |
1187 | { | |
1188 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1189 | struct fbcon_ops *ops = info->fbcon_par; | |
1190 | ||
1191 | struct display *p = &fb_display[vc->vc_num]; | |
1192 | u_int y_break; | |
1193 | ||
1194 | if (fbcon_is_inactive(vc, info)) | |
1195 | return; | |
1196 | ||
1197 | if (!height || !width) | |
1198 | return; | |
1199 | ||
1200 | /* Split blits that cross physical y_wrap boundary */ | |
1201 | ||
1202 | y_break = p->vrows - p->yscroll; | |
1203 | if (sy < y_break && sy + height - 1 >= y_break) { | |
1204 | u_int b = y_break - sy; | |
1205 | ops->clear(vc, info, real_y(p, sy), sx, b, width); | |
1206 | ops->clear(vc, info, real_y(p, sy + b), sx, height - b, | |
1207 | width); | |
1208 | } else | |
1209 | ops->clear(vc, info, real_y(p, sy), sx, height, width); | |
1210 | } | |
1211 | ||
1212 | static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, | |
1213 | int count, int ypos, int xpos) | |
1214 | { | |
1215 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1216 | struct display *p = &fb_display[vc->vc_num]; | |
1217 | struct fbcon_ops *ops = info->fbcon_par; | |
1218 | ||
1219 | if (!fbcon_is_inactive(vc, info)) | |
1220 | ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, | |
1221 | get_color(vc, info, scr_readw(s), 1), | |
1222 | get_color(vc, info, scr_readw(s), 0)); | |
1223 | } | |
1224 | ||
1225 | static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) | |
1226 | { | |
1227 | unsigned short chr; | |
1228 | ||
1229 | scr_writew(c, &chr); | |
1230 | fbcon_putcs(vc, &chr, 1, ypos, xpos); | |
1231 | } | |
1232 | ||
1233 | static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) | |
1234 | { | |
1235 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1236 | struct fbcon_ops *ops = info->fbcon_par; | |
1237 | ||
1238 | if (!fbcon_is_inactive(vc, info)) | |
1239 | ops->clear_margins(vc, info, bottom_only); | |
1240 | } | |
1241 | ||
1242 | static void fbcon_cursor(struct vc_data *vc, int mode) | |
1243 | { | |
1244 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1245 | struct fbcon_ops *ops = info->fbcon_par; | |
1246 | struct display *p = &fb_display[vc->vc_num]; | |
1247 | int y; | |
1248 | int c = scr_readw((u16 *) vc->vc_pos); | |
1249 | ||
1250 | if (fbcon_is_inactive(vc, info)) | |
1251 | return; | |
1252 | ||
1253 | ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; | |
1254 | if (mode & CM_SOFTBACK) { | |
1255 | mode &= ~CM_SOFTBACK; | |
1256 | y = softback_lines; | |
1257 | } else { | |
1258 | if (softback_lines) | |
1259 | fbcon_set_origin(vc); | |
1260 | y = 0; | |
1261 | } | |
1262 | ||
1263 | ops->cursor(vc, info, p, mode, y, get_color(vc, info, c, 1), | |
1264 | get_color(vc, info, c, 0)); | |
1265 | vbl_cursor_cnt = CURSOR_DRAW_DELAY; | |
1266 | } | |
1267 | ||
1268 | static int scrollback_phys_max = 0; | |
1269 | static int scrollback_max = 0; | |
1270 | static int scrollback_current = 0; | |
1271 | ||
1da177e4 LT |
1272 | /* |
1273 | * If no vc is existent yet, just set struct display | |
1274 | */ | |
1275 | static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
1276 | int unit) | |
1277 | { | |
1278 | struct display *p = &fb_display[unit]; | |
1279 | struct display *t = &fb_display[fg_console]; | |
1280 | ||
1da177e4 LT |
1281 | if (var_to_display(p, var, info)) |
1282 | return; | |
1283 | ||
1284 | p->fontdata = t->fontdata; | |
1285 | p->userfont = t->userfont; | |
1286 | if (p->userfont) | |
1287 | REFCOUNT(p->fontdata)++; | |
1288 | } | |
1289 | ||
1290 | static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, | |
1291 | struct vc_data *vc) | |
1292 | { | |
1293 | struct display *p = &fb_display[vc->vc_num], *t; | |
1294 | struct vc_data **default_mode = vc->vc_display_fg; | |
1295 | struct vc_data *svc = *default_mode; | |
e4fc2761 | 1296 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
1297 | int rows, cols, charcnt = 256; |
1298 | ||
1da177e4 LT |
1299 | if (var_to_display(p, var, info)) |
1300 | return; | |
1301 | t = &fb_display[svc->vc_num]; | |
1302 | if (!vc->vc_font.data) { | |
2f4516db | 1303 | vc->vc_font.data = (void *)(p->fontdata = t->fontdata); |
1da177e4 LT |
1304 | vc->vc_font.width = (*default_mode)->vc_font.width; |
1305 | vc->vc_font.height = (*default_mode)->vc_font.height; | |
1306 | p->userfont = t->userfont; | |
1307 | if (p->userfont) | |
1308 | REFCOUNT(p->fontdata)++; | |
1309 | } | |
1310 | if (p->userfont) | |
1311 | charcnt = FNTCHARCNT(p->fontdata); | |
1312 | ||
b8c90945 AD |
1313 | var->activate = FB_ACTIVATE_NOW; |
1314 | info->var.activate = var->activate; | |
e4fc2761 AD |
1315 | var->yoffset = info->var.yoffset; |
1316 | var->xoffset = info->var.xoffset; | |
b8c90945 | 1317 | fb_set_var(info, var); |
e4fc2761 | 1318 | ops->var = info->var; |
b8c90945 | 1319 | vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); |
1da177e4 LT |
1320 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; |
1321 | if (charcnt == 256) { | |
1322 | vc->vc_hi_font_mask = 0; | |
1323 | } else { | |
1324 | vc->vc_hi_font_mask = 0x100; | |
1325 | if (vc->vc_can_do_color) | |
1326 | vc->vc_complement_mask <<= 1; | |
1327 | } | |
1328 | ||
1329 | if (!*svc->vc_uni_pagedir_loc) | |
1330 | con_set_default_unimap(svc); | |
1331 | if (!*vc->vc_uni_pagedir_loc) | |
1332 | con_copy_unimap(vc, svc); | |
1333 | ||
e4fc2761 AD |
1334 | cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
1335 | rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); | |
1336 | cols /= vc->vc_font.width; | |
1337 | rows /= vc->vc_font.height; | |
1da177e4 | 1338 | vc_resize(vc, cols, rows); |
e4fc2761 | 1339 | |
1da177e4 LT |
1340 | if (CON_IS_VISIBLE(vc)) { |
1341 | update_screen(vc); | |
4d9c5b6e AD |
1342 | if (softback_buf) |
1343 | fbcon_update_softback(vc); | |
1da177e4 LT |
1344 | } |
1345 | } | |
1346 | ||
1347 | static __inline__ void ywrap_up(struct vc_data *vc, int count) | |
1348 | { | |
1349 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
e4fc2761 | 1350 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
1351 | struct display *p = &fb_display[vc->vc_num]; |
1352 | ||
1353 | p->yscroll += count; | |
1354 | if (p->yscroll >= p->vrows) /* Deal with wrap */ | |
1355 | p->yscroll -= p->vrows; | |
e4fc2761 AD |
1356 | ops->var.xoffset = 0; |
1357 | ops->var.yoffset = p->yscroll * vc->vc_font.height; | |
1358 | ops->var.vmode |= FB_VMODE_YWRAP; | |
1359 | ops->update_start(info); | |
1da177e4 LT |
1360 | scrollback_max += count; |
1361 | if (scrollback_max > scrollback_phys_max) | |
1362 | scrollback_max = scrollback_phys_max; | |
1363 | scrollback_current = 0; | |
1364 | } | |
1365 | ||
1366 | static __inline__ void ywrap_down(struct vc_data *vc, int count) | |
1367 | { | |
1368 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
e4fc2761 | 1369 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
1370 | struct display *p = &fb_display[vc->vc_num]; |
1371 | ||
1372 | p->yscroll -= count; | |
1373 | if (p->yscroll < 0) /* Deal with wrap */ | |
1374 | p->yscroll += p->vrows; | |
e4fc2761 AD |
1375 | ops->var.xoffset = 0; |
1376 | ops->var.yoffset = p->yscroll * vc->vc_font.height; | |
1377 | ops->var.vmode |= FB_VMODE_YWRAP; | |
1378 | ops->update_start(info); | |
1da177e4 LT |
1379 | scrollback_max -= count; |
1380 | if (scrollback_max < 0) | |
1381 | scrollback_max = 0; | |
1382 | scrollback_current = 0; | |
1383 | } | |
1384 | ||
1385 | static __inline__ void ypan_up(struct vc_data *vc, int count) | |
1386 | { | |
1387 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1388 | struct display *p = &fb_display[vc->vc_num]; | |
1389 | struct fbcon_ops *ops = info->fbcon_par; | |
1390 | ||
1391 | p->yscroll += count; | |
1392 | if (p->yscroll > p->vrows - vc->vc_rows) { | |
1393 | ops->bmove(vc, info, p->vrows - vc->vc_rows, | |
1394 | 0, 0, 0, vc->vc_rows, vc->vc_cols); | |
1395 | p->yscroll -= p->vrows - vc->vc_rows; | |
1396 | } | |
e4fc2761 AD |
1397 | |
1398 | ops->var.xoffset = 0; | |
1399 | ops->var.yoffset = p->yscroll * vc->vc_font.height; | |
1400 | ops->var.vmode &= ~FB_VMODE_YWRAP; | |
1401 | ops->update_start(info); | |
1da177e4 LT |
1402 | fbcon_clear_margins(vc, 1); |
1403 | scrollback_max += count; | |
1404 | if (scrollback_max > scrollback_phys_max) | |
1405 | scrollback_max = scrollback_phys_max; | |
1406 | scrollback_current = 0; | |
1407 | } | |
1408 | ||
1409 | static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) | |
1410 | { | |
1411 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
e4fc2761 | 1412 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
1413 | struct display *p = &fb_display[vc->vc_num]; |
1414 | int redraw = 0; | |
1415 | ||
1416 | p->yscroll += count; | |
1417 | if (p->yscroll > p->vrows - vc->vc_rows) { | |
1418 | p->yscroll -= p->vrows - vc->vc_rows; | |
1419 | redraw = 1; | |
1420 | } | |
1421 | ||
1da177e4 LT |
1422 | if (redraw) |
1423 | fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); | |
e4fc2761 AD |
1424 | |
1425 | ops->var.xoffset = 0; | |
1426 | ops->var.yoffset = p->yscroll * vc->vc_font.height; | |
1427 | ops->var.vmode &= ~FB_VMODE_YWRAP; | |
1428 | ops->update_start(info); | |
1da177e4 LT |
1429 | fbcon_clear_margins(vc, 1); |
1430 | scrollback_max += count; | |
1431 | if (scrollback_max > scrollback_phys_max) | |
1432 | scrollback_max = scrollback_phys_max; | |
1433 | scrollback_current = 0; | |
1434 | } | |
1435 | ||
1436 | static __inline__ void ypan_down(struct vc_data *vc, int count) | |
1437 | { | |
1438 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1439 | struct display *p = &fb_display[vc->vc_num]; | |
1440 | struct fbcon_ops *ops = info->fbcon_par; | |
1441 | ||
1442 | p->yscroll -= count; | |
1443 | if (p->yscroll < 0) { | |
1444 | ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, | |
1445 | 0, vc->vc_rows, vc->vc_cols); | |
1446 | p->yscroll += p->vrows - vc->vc_rows; | |
1447 | } | |
e4fc2761 AD |
1448 | |
1449 | ops->var.xoffset = 0; | |
1450 | ops->var.yoffset = p->yscroll * vc->vc_font.height; | |
1451 | ops->var.vmode &= ~FB_VMODE_YWRAP; | |
1452 | ops->update_start(info); | |
1da177e4 LT |
1453 | fbcon_clear_margins(vc, 1); |
1454 | scrollback_max -= count; | |
1455 | if (scrollback_max < 0) | |
1456 | scrollback_max = 0; | |
1457 | scrollback_current = 0; | |
1458 | } | |
1459 | ||
1460 | static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) | |
1461 | { | |
1462 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
e4fc2761 | 1463 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
1464 | struct display *p = &fb_display[vc->vc_num]; |
1465 | int redraw = 0; | |
1466 | ||
1467 | p->yscroll -= count; | |
1468 | if (p->yscroll < 0) { | |
1469 | p->yscroll += p->vrows - vc->vc_rows; | |
1470 | redraw = 1; | |
1471 | } | |
e4fc2761 | 1472 | |
1da177e4 LT |
1473 | if (redraw) |
1474 | fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); | |
e4fc2761 AD |
1475 | |
1476 | ops->var.xoffset = 0; | |
1477 | ops->var.yoffset = p->yscroll * vc->vc_font.height; | |
1478 | ops->var.vmode &= ~FB_VMODE_YWRAP; | |
1479 | ops->update_start(info); | |
1da177e4 LT |
1480 | fbcon_clear_margins(vc, 1); |
1481 | scrollback_max -= count; | |
1482 | if (scrollback_max < 0) | |
1483 | scrollback_max = 0; | |
1484 | scrollback_current = 0; | |
1485 | } | |
1486 | ||
1487 | static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, | |
1488 | long delta) | |
1489 | { | |
1490 | int count = vc->vc_rows; | |
1491 | unsigned short *d, *s; | |
1492 | unsigned long n; | |
1493 | int line = 0; | |
1494 | ||
1495 | d = (u16 *) softback_curr; | |
1496 | if (d == (u16 *) softback_in) | |
1497 | d = (u16 *) vc->vc_origin; | |
1498 | n = softback_curr + delta * vc->vc_size_row; | |
1499 | softback_lines -= delta; | |
1500 | if (delta < 0) { | |
1501 | if (softback_curr < softback_top && n < softback_buf) { | |
1502 | n += softback_end - softback_buf; | |
1503 | if (n < softback_top) { | |
1504 | softback_lines -= | |
1505 | (softback_top - n) / vc->vc_size_row; | |
1506 | n = softback_top; | |
1507 | } | |
1508 | } else if (softback_curr >= softback_top | |
1509 | && n < softback_top) { | |
1510 | softback_lines -= | |
1511 | (softback_top - n) / vc->vc_size_row; | |
1512 | n = softback_top; | |
1513 | } | |
1514 | } else { | |
1515 | if (softback_curr > softback_in && n >= softback_end) { | |
1516 | n += softback_buf - softback_end; | |
1517 | if (n > softback_in) { | |
1518 | n = softback_in; | |
1519 | softback_lines = 0; | |
1520 | } | |
1521 | } else if (softback_curr <= softback_in && n > softback_in) { | |
1522 | n = softback_in; | |
1523 | softback_lines = 0; | |
1524 | } | |
1525 | } | |
1526 | if (n == softback_curr) | |
1527 | return; | |
1528 | softback_curr = n; | |
1529 | s = (u16 *) softback_curr; | |
1530 | if (s == (u16 *) softback_in) | |
1531 | s = (u16 *) vc->vc_origin; | |
1532 | while (count--) { | |
1533 | unsigned short *start; | |
1534 | unsigned short *le; | |
1535 | unsigned short c; | |
1536 | int x = 0; | |
1537 | unsigned short attr = 1; | |
1538 | ||
1539 | start = s; | |
1540 | le = advance_row(s, 1); | |
1541 | do { | |
1542 | c = scr_readw(s); | |
1543 | if (attr != (c & 0xff00)) { | |
1544 | attr = c & 0xff00; | |
1545 | if (s > start) { | |
1546 | fbcon_putcs(vc, start, s - start, | |
1547 | line, x); | |
1548 | x += s - start; | |
1549 | start = s; | |
1550 | } | |
1551 | } | |
1552 | if (c == scr_readw(d)) { | |
1553 | if (s > start) { | |
1554 | fbcon_putcs(vc, start, s - start, | |
1555 | line, x); | |
1556 | x += s - start + 1; | |
1557 | start = s + 1; | |
1558 | } else { | |
1559 | x++; | |
1560 | start++; | |
1561 | } | |
1562 | } | |
1563 | s++; | |
1564 | d++; | |
1565 | } while (s < le); | |
1566 | if (s > start) | |
1567 | fbcon_putcs(vc, start, s - start, line, x); | |
1568 | line++; | |
1569 | if (d == (u16 *) softback_end) | |
1570 | d = (u16 *) softback_buf; | |
1571 | if (d == (u16 *) softback_in) | |
1572 | d = (u16 *) vc->vc_origin; | |
1573 | if (s == (u16 *) softback_end) | |
1574 | s = (u16 *) softback_buf; | |
1575 | if (s == (u16 *) softback_in) | |
1576 | s = (u16 *) vc->vc_origin; | |
1577 | } | |
1578 | } | |
1579 | ||
1580 | static void fbcon_redraw_move(struct vc_data *vc, struct display *p, | |
1581 | int line, int count, int dy) | |
1582 | { | |
1583 | unsigned short *s = (unsigned short *) | |
1584 | (vc->vc_origin + vc->vc_size_row * line); | |
1585 | ||
1586 | while (count--) { | |
1587 | unsigned short *start = s; | |
1588 | unsigned short *le = advance_row(s, 1); | |
1589 | unsigned short c; | |
1590 | int x = 0; | |
1591 | unsigned short attr = 1; | |
1592 | ||
1593 | do { | |
1594 | c = scr_readw(s); | |
1595 | if (attr != (c & 0xff00)) { | |
1596 | attr = c & 0xff00; | |
1597 | if (s > start) { | |
1598 | fbcon_putcs(vc, start, s - start, | |
1599 | dy, x); | |
1600 | x += s - start; | |
1601 | start = s; | |
1602 | } | |
1603 | } | |
1604 | console_conditional_schedule(); | |
1605 | s++; | |
1606 | } while (s < le); | |
1607 | if (s > start) | |
1608 | fbcon_putcs(vc, start, s - start, dy, x); | |
1609 | console_conditional_schedule(); | |
1610 | dy++; | |
1611 | } | |
1612 | } | |
1613 | ||
1614 | static void fbcon_redraw(struct vc_data *vc, struct display *p, | |
1615 | int line, int count, int offset) | |
1616 | { | |
1617 | unsigned short *d = (unsigned short *) | |
1618 | (vc->vc_origin + vc->vc_size_row * line); | |
1619 | unsigned short *s = d + offset; | |
1620 | ||
1621 | while (count--) { | |
1622 | unsigned short *start = s; | |
1623 | unsigned short *le = advance_row(s, 1); | |
1624 | unsigned short c; | |
1625 | int x = 0; | |
1626 | unsigned short attr = 1; | |
1627 | ||
1628 | do { | |
1629 | c = scr_readw(s); | |
1630 | if (attr != (c & 0xff00)) { | |
1631 | attr = c & 0xff00; | |
1632 | if (s > start) { | |
1633 | fbcon_putcs(vc, start, s - start, | |
1634 | line, x); | |
1635 | x += s - start; | |
1636 | start = s; | |
1637 | } | |
1638 | } | |
1639 | if (c == scr_readw(d)) { | |
1640 | if (s > start) { | |
1641 | fbcon_putcs(vc, start, s - start, | |
1642 | line, x); | |
1643 | x += s - start + 1; | |
1644 | start = s + 1; | |
1645 | } else { | |
1646 | x++; | |
1647 | start++; | |
1648 | } | |
1649 | } | |
1650 | scr_writew(c, d); | |
1651 | console_conditional_schedule(); | |
1652 | s++; | |
1653 | d++; | |
1654 | } while (s < le); | |
1655 | if (s > start) | |
1656 | fbcon_putcs(vc, start, s - start, line, x); | |
1657 | console_conditional_schedule(); | |
1658 | if (offset > 0) | |
1659 | line++; | |
1660 | else { | |
1661 | line--; | |
1662 | /* NOTE: We subtract two lines from these pointers */ | |
1663 | s -= vc->vc_size_row; | |
1664 | d -= vc->vc_size_row; | |
1665 | } | |
1666 | } | |
1667 | } | |
1668 | ||
1669 | static inline void fbcon_softback_note(struct vc_data *vc, int t, | |
1670 | int count) | |
1671 | { | |
1672 | unsigned short *p; | |
1673 | ||
1674 | if (vc->vc_num != fg_console) | |
1675 | return; | |
1676 | p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); | |
1677 | ||
1678 | while (count) { | |
1679 | scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); | |
1680 | count--; | |
1681 | p = advance_row(p, 1); | |
1682 | softback_in += vc->vc_size_row; | |
1683 | if (softback_in == softback_end) | |
1684 | softback_in = softback_buf; | |
1685 | if (softback_in == softback_top) { | |
1686 | softback_top += vc->vc_size_row; | |
1687 | if (softback_top == softback_end) | |
1688 | softback_top = softback_buf; | |
1689 | } | |
1690 | } | |
1691 | softback_curr = softback_in; | |
1692 | } | |
1693 | ||
1694 | static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir, | |
1695 | int count) | |
1696 | { | |
1697 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1698 | struct display *p = &fb_display[vc->vc_num]; | |
1699 | struct fbcon_ops *ops = info->fbcon_par; | |
1700 | int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; | |
1701 | ||
1702 | if (fbcon_is_inactive(vc, info)) | |
1703 | return -EINVAL; | |
1704 | ||
1705 | fbcon_cursor(vc, CM_ERASE); | |
1706 | ||
1707 | /* | |
1708 | * ++Geert: Only use ywrap/ypan if the console is in text mode | |
1709 | * ++Andrew: Only use ypan on hardware text mode when scrolling the | |
1710 | * whole screen (prevents flicker). | |
1711 | */ | |
1712 | ||
1713 | switch (dir) { | |
1714 | case SM_UP: | |
1715 | if (count > vc->vc_rows) /* Maximum realistic size */ | |
1716 | count = vc->vc_rows; | |
1717 | if (softback_top) | |
1718 | fbcon_softback_note(vc, t, count); | |
1719 | if (logo_shown >= 0) | |
1720 | goto redraw_up; | |
1721 | switch (p->scrollmode) { | |
1722 | case SCROLL_MOVE: | |
1723 | ops->bmove(vc, info, t + count, 0, t, 0, | |
1724 | b - t - count, vc->vc_cols); | |
1725 | ops->clear(vc, info, b - count, 0, count, | |
1726 | vc->vc_cols); | |
1727 | break; | |
1728 | ||
1729 | case SCROLL_WRAP_MOVE: | |
1730 | if (b - t - count > 3 * vc->vc_rows >> 2) { | |
1731 | if (t > 0) | |
1732 | fbcon_bmove(vc, 0, 0, count, 0, t, | |
1733 | vc->vc_cols); | |
1734 | ywrap_up(vc, count); | |
1735 | if (vc->vc_rows - b > 0) | |
1736 | fbcon_bmove(vc, b - count, 0, b, 0, | |
1737 | vc->vc_rows - b, | |
1738 | vc->vc_cols); | |
1739 | } else if (info->flags & FBINFO_READS_FAST) | |
1740 | fbcon_bmove(vc, t + count, 0, t, 0, | |
1741 | b - t - count, vc->vc_cols); | |
1742 | else | |
1743 | goto redraw_up; | |
1744 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1745 | break; | |
1746 | ||
1747 | case SCROLL_PAN_REDRAW: | |
1748 | if ((p->yscroll + count <= | |
1749 | 2 * (p->vrows - vc->vc_rows)) | |
1750 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1751 | || (scroll_partial | |
1752 | && (b - t - count > | |
1753 | 3 * vc->vc_rows >> 2)))) { | |
1754 | if (t > 0) | |
1755 | fbcon_redraw_move(vc, p, 0, t, count); | |
1756 | ypan_up_redraw(vc, t, count); | |
1757 | if (vc->vc_rows - b > 0) | |
1758 | fbcon_redraw_move(vc, p, b - count, | |
1759 | vc->vc_rows - b, b); | |
1760 | } else | |
1761 | fbcon_redraw_move(vc, p, t + count, b - t - count, t); | |
1762 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1763 | break; | |
1764 | ||
1765 | case SCROLL_PAN_MOVE: | |
1766 | if ((p->yscroll + count <= | |
1767 | 2 * (p->vrows - vc->vc_rows)) | |
1768 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1769 | || (scroll_partial | |
1770 | && (b - t - count > | |
1771 | 3 * vc->vc_rows >> 2)))) { | |
1772 | if (t > 0) | |
1773 | fbcon_bmove(vc, 0, 0, count, 0, t, | |
1774 | vc->vc_cols); | |
1775 | ypan_up(vc, count); | |
1776 | if (vc->vc_rows - b > 0) | |
1777 | fbcon_bmove(vc, b - count, 0, b, 0, | |
1778 | vc->vc_rows - b, | |
1779 | vc->vc_cols); | |
1780 | } else if (info->flags & FBINFO_READS_FAST) | |
1781 | fbcon_bmove(vc, t + count, 0, t, 0, | |
1782 | b - t - count, vc->vc_cols); | |
1783 | else | |
1784 | goto redraw_up; | |
1785 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1786 | break; | |
1787 | ||
1788 | case SCROLL_REDRAW: | |
1789 | redraw_up: | |
1790 | fbcon_redraw(vc, p, t, b - t - count, | |
1791 | count * vc->vc_cols); | |
1792 | fbcon_clear(vc, b - count, 0, count, vc->vc_cols); | |
1793 | scr_memsetw((unsigned short *) (vc->vc_origin + | |
1794 | vc->vc_size_row * | |
1795 | (b - count)), | |
1796 | vc->vc_video_erase_char, | |
1797 | vc->vc_size_row * count); | |
1798 | return 1; | |
1799 | } | |
1800 | break; | |
1801 | ||
1802 | case SM_DOWN: | |
1803 | if (count > vc->vc_rows) /* Maximum realistic size */ | |
1804 | count = vc->vc_rows; | |
e703ecc3 JB |
1805 | if (logo_shown >= 0) |
1806 | goto redraw_down; | |
1da177e4 LT |
1807 | switch (p->scrollmode) { |
1808 | case SCROLL_MOVE: | |
1809 | ops->bmove(vc, info, t, 0, t + count, 0, | |
1810 | b - t - count, vc->vc_cols); | |
1811 | ops->clear(vc, info, t, 0, count, vc->vc_cols); | |
1812 | break; | |
1813 | ||
1814 | case SCROLL_WRAP_MOVE: | |
1815 | if (b - t - count > 3 * vc->vc_rows >> 2) { | |
1816 | if (vc->vc_rows - b > 0) | |
1817 | fbcon_bmove(vc, b, 0, b - count, 0, | |
1818 | vc->vc_rows - b, | |
1819 | vc->vc_cols); | |
1820 | ywrap_down(vc, count); | |
1821 | if (t > 0) | |
1822 | fbcon_bmove(vc, count, 0, 0, 0, t, | |
1823 | vc->vc_cols); | |
1824 | } else if (info->flags & FBINFO_READS_FAST) | |
1825 | fbcon_bmove(vc, t, 0, t + count, 0, | |
1826 | b - t - count, vc->vc_cols); | |
1827 | else | |
1828 | goto redraw_down; | |
1829 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1830 | break; | |
1831 | ||
1832 | case SCROLL_PAN_MOVE: | |
1833 | if ((count - p->yscroll <= p->vrows - vc->vc_rows) | |
1834 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1835 | || (scroll_partial | |
1836 | && (b - t - count > | |
1837 | 3 * vc->vc_rows >> 2)))) { | |
1838 | if (vc->vc_rows - b > 0) | |
1839 | fbcon_bmove(vc, b, 0, b - count, 0, | |
1840 | vc->vc_rows - b, | |
1841 | vc->vc_cols); | |
1842 | ypan_down(vc, count); | |
1843 | if (t > 0) | |
1844 | fbcon_bmove(vc, count, 0, 0, 0, t, | |
1845 | vc->vc_cols); | |
1846 | } else if (info->flags & FBINFO_READS_FAST) | |
1847 | fbcon_bmove(vc, t, 0, t + count, 0, | |
1848 | b - t - count, vc->vc_cols); | |
1849 | else | |
1850 | goto redraw_down; | |
1851 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1852 | break; | |
1853 | ||
1854 | case SCROLL_PAN_REDRAW: | |
1855 | if ((count - p->yscroll <= p->vrows - vc->vc_rows) | |
1856 | && ((!scroll_partial && (b - t == vc->vc_rows)) | |
1857 | || (scroll_partial | |
1858 | && (b - t - count > | |
1859 | 3 * vc->vc_rows >> 2)))) { | |
1860 | if (vc->vc_rows - b > 0) | |
1861 | fbcon_redraw_move(vc, p, b, vc->vc_rows - b, | |
1862 | b - count); | |
1863 | ypan_down_redraw(vc, t, count); | |
1864 | if (t > 0) | |
1865 | fbcon_redraw_move(vc, p, count, t, 0); | |
1866 | } else | |
1867 | fbcon_redraw_move(vc, p, t, b - t - count, t + count); | |
1868 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1869 | break; | |
1870 | ||
1871 | case SCROLL_REDRAW: | |
1872 | redraw_down: | |
1873 | fbcon_redraw(vc, p, b - 1, b - t - count, | |
1874 | -count * vc->vc_cols); | |
1875 | fbcon_clear(vc, t, 0, count, vc->vc_cols); | |
1876 | scr_memsetw((unsigned short *) (vc->vc_origin + | |
1877 | vc->vc_size_row * | |
1878 | t), | |
1879 | vc->vc_video_erase_char, | |
1880 | vc->vc_size_row * count); | |
1881 | return 1; | |
1882 | } | |
1883 | } | |
1884 | return 0; | |
1885 | } | |
1886 | ||
1887 | ||
1888 | static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, | |
1889 | int height, int width) | |
1890 | { | |
1891 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1892 | struct display *p = &fb_display[vc->vc_num]; | |
1893 | ||
1894 | if (fbcon_is_inactive(vc, info)) | |
1895 | return; | |
1896 | ||
1897 | if (!width || !height) | |
1898 | return; | |
1899 | ||
1900 | /* Split blits that cross physical y_wrap case. | |
1901 | * Pathological case involves 4 blits, better to use recursive | |
1902 | * code rather than unrolled case | |
1903 | * | |
1904 | * Recursive invocations don't need to erase the cursor over and | |
1905 | * over again, so we use fbcon_bmove_rec() | |
1906 | */ | |
1907 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, | |
1908 | p->vrows - p->yscroll); | |
1909 | } | |
1910 | ||
1911 | static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, | |
1912 | int dy, int dx, int height, int width, u_int y_break) | |
1913 | { | |
1914 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
1915 | struct fbcon_ops *ops = info->fbcon_par; | |
1916 | u_int b; | |
1917 | ||
1918 | if (sy < y_break && sy + height > y_break) { | |
1919 | b = y_break - sy; | |
1920 | if (dy < sy) { /* Avoid trashing self */ | |
1921 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1922 | y_break); | |
1923 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1924 | height - b, width, y_break); | |
1925 | } else { | |
1926 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1927 | height - b, width, y_break); | |
1928 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1929 | y_break); | |
1930 | } | |
1931 | return; | |
1932 | } | |
1933 | ||
1934 | if (dy < y_break && dy + height > y_break) { | |
1935 | b = y_break - dy; | |
1936 | if (dy < sy) { /* Avoid trashing self */ | |
1937 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1938 | y_break); | |
1939 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1940 | height - b, width, y_break); | |
1941 | } else { | |
1942 | fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, | |
1943 | height - b, width, y_break); | |
1944 | fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, | |
1945 | y_break); | |
1946 | } | |
1947 | return; | |
1948 | } | |
1949 | ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, | |
1950 | height, width); | |
1951 | } | |
1952 | ||
e4fc2761 AD |
1953 | static __inline__ void updatescrollmode(struct display *p, |
1954 | struct fb_info *info, | |
1da177e4 LT |
1955 | struct vc_data *vc) |
1956 | { | |
e4fc2761 | 1957 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
1958 | int fh = vc->vc_font.height; |
1959 | int cap = info->flags; | |
e4fc2761 AD |
1960 | u16 t = 0; |
1961 | int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, | |
1962 | info->fix.xpanstep); | |
1963 | int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); | |
1964 | int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); | |
1965 | int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, | |
1966 | info->var.xres_virtual); | |
1967 | int good_pan = (cap & FBINFO_HWACCEL_YPAN) && | |
1968 | divides(ypan, vc->vc_font.height) && vyres > yres; | |
1969 | int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && | |
1970 | divides(ywrap, vc->vc_font.height) && | |
1971 | divides(vc->vc_font.height, vyres); | |
1da177e4 | 1972 | int reading_fast = cap & FBINFO_READS_FAST; |
e4fc2761 AD |
1973 | int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && |
1974 | !(cap & FBINFO_HWACCEL_DISABLED); | |
1975 | int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && | |
1976 | !(cap & FBINFO_HWACCEL_DISABLED); | |
1977 | ||
1978 | p->vrows = vyres/fh; | |
1979 | if (yres > (fh * (vc->vc_rows + 1))) | |
1980 | p->vrows -= (yres - (fh * vc->vc_rows)) / fh; | |
1981 | if ((yres % fh) && (vyres % fh < yres % fh)) | |
1da177e4 LT |
1982 | p->vrows--; |
1983 | ||
1984 | if (good_wrap || good_pan) { | |
1985 | if (reading_fast || fast_copyarea) | |
e4fc2761 AD |
1986 | p->scrollmode = good_wrap ? |
1987 | SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; | |
1da177e4 LT |
1988 | else |
1989 | p->scrollmode = good_wrap ? SCROLL_REDRAW : | |
1990 | SCROLL_PAN_REDRAW; | |
1991 | } else { | |
1992 | if (reading_fast || (fast_copyarea && !fast_imageblit)) | |
1993 | p->scrollmode = SCROLL_MOVE; | |
1994 | else | |
1995 | p->scrollmode = SCROLL_REDRAW; | |
1996 | } | |
1997 | } | |
1998 | ||
1999 | static int fbcon_resize(struct vc_data *vc, unsigned int width, | |
2000 | unsigned int height) | |
2001 | { | |
2002 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
e4fc2761 | 2003 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
2004 | struct display *p = &fb_display[vc->vc_num]; |
2005 | struct fb_var_screeninfo var = info->var; | |
e4fc2761 AD |
2006 | int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; |
2007 | ||
2008 | virt_w = FBCON_SWAP(ops->rotate, width, height); | |
2009 | virt_h = FBCON_SWAP(ops->rotate, height, width); | |
2010 | virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, | |
2011 | vc->vc_font.height); | |
2012 | virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, | |
2013 | vc->vc_font.width); | |
2014 | var.xres = virt_w * virt_fw; | |
2015 | var.yres = virt_h * virt_fh; | |
1da177e4 LT |
2016 | x_diff = info->var.xres - var.xres; |
2017 | y_diff = info->var.yres - var.yres; | |
e4fc2761 AD |
2018 | if (x_diff < 0 || x_diff > virt_fw || |
2019 | y_diff < 0 || y_diff > virt_fh) { | |
1da177e4 LT |
2020 | struct fb_videomode *mode; |
2021 | ||
2022 | DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); | |
2023 | mode = fb_find_best_mode(&var, &info->modelist); | |
2024 | if (mode == NULL) | |
2025 | return -EINVAL; | |
3084a895 | 2026 | display_to_var(&var, p); |
1da177e4 | 2027 | fb_videomode_to_var(&var, mode); |
3084a895 | 2028 | |
e4fc2761 | 2029 | if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) |
1da177e4 | 2030 | return -EINVAL; |
1da177e4 LT |
2031 | |
2032 | DPRINTK("resize now %ix%i\n", var.xres, var.yres); | |
2033 | if (CON_IS_VISIBLE(vc)) { | |
2034 | var.activate = FB_ACTIVATE_NOW | | |
2035 | FB_ACTIVATE_FORCE; | |
2036 | fb_set_var(info, &var); | |
2037 | } | |
2038 | var_to_display(p, &info->var, info); | |
e4fc2761 | 2039 | ops->var = info->var; |
1da177e4 LT |
2040 | } |
2041 | updatescrollmode(p, info, vc); | |
2042 | return 0; | |
2043 | } | |
2044 | ||
2045 | static int fbcon_switch(struct vc_data *vc) | |
2046 | { | |
88fb2c6e | 2047 | struct fb_info *info, *old_info = NULL; |
e4fc2761 | 2048 | struct fbcon_ops *ops; |
1da177e4 LT |
2049 | struct display *p = &fb_display[vc->vc_num]; |
2050 | struct fb_var_screeninfo var; | |
56f0d64d | 2051 | int i, prev_console, charcnt = 256; |
1da177e4 LT |
2052 | |
2053 | info = registered_fb[con2fb_map[vc->vc_num]]; | |
e4fc2761 | 2054 | ops = info->fbcon_par; |
1da177e4 LT |
2055 | |
2056 | if (softback_top) { | |
1da177e4 LT |
2057 | if (softback_lines) |
2058 | fbcon_set_origin(vc); | |
2059 | softback_top = softback_curr = softback_in = softback_buf; | |
2060 | softback_lines = 0; | |
4d9c5b6e | 2061 | fbcon_update_softback(vc); |
1da177e4 LT |
2062 | } |
2063 | ||
2064 | if (logo_shown >= 0) { | |
2065 | struct vc_data *conp2 = vc_cons[logo_shown].d; | |
2066 | ||
2067 | if (conp2->vc_top == logo_lines | |
2068 | && conp2->vc_bottom == conp2->vc_rows) | |
2069 | conp2->vc_top = 0; | |
2070 | logo_shown = FBCON_LOGO_CANSHOW; | |
2071 | } | |
2072 | ||
e4fc2761 | 2073 | prev_console = ops->currcon; |
88fb2c6e AD |
2074 | if (prev_console != -1) |
2075 | old_info = registered_fb[con2fb_map[prev_console]]; | |
1da177e4 LT |
2076 | /* |
2077 | * FIXME: If we have multiple fbdev's loaded, we need to | |
2078 | * update all info->currcon. Perhaps, we can place this | |
2079 | * in a centralized structure, but this might break some | |
2080 | * drivers. | |
2081 | * | |
2082 | * info->currcon = vc->vc_num; | |
2083 | */ | |
2084 | for (i = 0; i < FB_MAX; i++) { | |
2085 | if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) { | |
e4fc2761 | 2086 | struct fbcon_ops *o = registered_fb[i]->fbcon_par; |
1da177e4 | 2087 | |
e4fc2761 | 2088 | o->currcon = vc->vc_num; |
1da177e4 LT |
2089 | } |
2090 | } | |
2091 | memset(&var, 0, sizeof(struct fb_var_screeninfo)); | |
2092 | display_to_var(&var, p); | |
2093 | var.activate = FB_ACTIVATE_NOW; | |
2094 | ||
2095 | /* | |
2096 | * make sure we don't unnecessarily trip the memcmp() | |
2097 | * in fb_set_var() | |
2098 | */ | |
2099 | info->var.activate = var.activate; | |
e4fc2761 AD |
2100 | var.yoffset = info->var.yoffset; |
2101 | var.xoffset = info->var.xoffset; | |
2102 | var.vmode = info->var.vmode; | |
1da177e4 | 2103 | fb_set_var(info, &var); |
e4fc2761 | 2104 | ops->var = info->var; |
1da177e4 | 2105 | |
88fb2c6e AD |
2106 | if (old_info != NULL && old_info != info) { |
2107 | if (info->fbops->fb_set_par) | |
2108 | info->fbops->fb_set_par(info); | |
2109 | fbcon_del_cursor_timer(old_info); | |
2110 | fbcon_add_cursor_timer(info); | |
2111 | } | |
1da177e4 LT |
2112 | |
2113 | set_blitting_type(vc, info, p); | |
e4fc2761 AD |
2114 | ops->cursor_reset = 1; |
2115 | ||
2116 | if (ops->rotate_font && ops->rotate_font(info, vc, p)) { | |
2117 | ops->rotate = FB_ROTATE_UR; | |
2118 | set_blitting_type(vc, info, p); | |
2119 | } | |
1da177e4 | 2120 | |
b8c90945 | 2121 | vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); |
1da177e4 | 2122 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; |
56f0d64d AD |
2123 | |
2124 | if (p->userfont) | |
2125 | charcnt = FNTCHARCNT(vc->vc_font.data); | |
2126 | ||
2127 | if (charcnt > 256) | |
2128 | vc->vc_complement_mask <<= 1; | |
2129 | ||
1da177e4 LT |
2130 | updatescrollmode(p, info, vc); |
2131 | ||
2132 | switch (p->scrollmode) { | |
2133 | case SCROLL_WRAP_MOVE: | |
2134 | scrollback_phys_max = p->vrows - vc->vc_rows; | |
2135 | break; | |
2136 | case SCROLL_PAN_MOVE: | |
2137 | case SCROLL_PAN_REDRAW: | |
2138 | scrollback_phys_max = p->vrows - 2 * vc->vc_rows; | |
2139 | if (scrollback_phys_max < 0) | |
2140 | scrollback_phys_max = 0; | |
2141 | break; | |
2142 | default: | |
2143 | scrollback_phys_max = 0; | |
2144 | break; | |
2145 | } | |
e4fc2761 | 2146 | |
1da177e4 LT |
2147 | scrollback_max = 0; |
2148 | scrollback_current = 0; | |
4e1567d3 AD |
2149 | |
2150 | if (!fbcon_is_inactive(vc, info)) { | |
2151 | ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; | |
2152 | ops->update_start(info); | |
2153 | } | |
2154 | ||
1da177e4 LT |
2155 | fbcon_set_palette(vc, color_table); |
2156 | fbcon_clear_margins(vc, 0); | |
2157 | ||
2158 | if (logo_shown == FBCON_LOGO_DRAW) { | |
2159 | ||
2160 | logo_shown = fg_console; | |
2161 | /* This is protected above by initmem_freed */ | |
9c44e5f6 | 2162 | fb_show_logo(info, ops->rotate); |
1da177e4 LT |
2163 | update_region(vc, |
2164 | vc->vc_origin + vc->vc_size_row * vc->vc_top, | |
2165 | vc->vc_size_row * (vc->vc_bottom - | |
2166 | vc->vc_top) / 2); | |
2167 | return 0; | |
2168 | } | |
2169 | return 1; | |
2170 | } | |
2171 | ||
2172 | static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, | |
2173 | int blank) | |
2174 | { | |
2175 | if (blank) { | |
2176 | unsigned short charmask = vc->vc_hi_font_mask ? | |
2177 | 0x1ff : 0xff; | |
2178 | unsigned short oldc; | |
2179 | ||
2180 | oldc = vc->vc_video_erase_char; | |
2181 | vc->vc_video_erase_char &= charmask; | |
2182 | fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); | |
2183 | vc->vc_video_erase_char = oldc; | |
2184 | } | |
2185 | } | |
2186 | ||
2187 | static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) | |
2188 | { | |
2189 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2190 | struct fbcon_ops *ops = info->fbcon_par; | |
2191 | ||
2192 | if (mode_switch) { | |
2193 | struct fb_var_screeninfo var = info->var; | |
2194 | ||
2195 | ops->graphics = 1; | |
2196 | ||
2197 | if (!blank) { | |
47434847 AD |
2198 | if (info->fbops->fb_save_state) |
2199 | info->fbops->fb_save_state(info); | |
1da177e4 LT |
2200 | var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; |
2201 | fb_set_var(info, &var); | |
2202 | ops->graphics = 0; | |
e4fc2761 | 2203 | ops->var = info->var; |
47434847 AD |
2204 | } else if (info->fbops->fb_restore_state) |
2205 | info->fbops->fb_restore_state(info); | |
1da177e4 LT |
2206 | } |
2207 | ||
2208 | if (!fbcon_is_inactive(vc, info)) { | |
2209 | if (ops->blank_state != blank) { | |
2210 | ops->blank_state = blank; | |
2211 | fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); | |
2212 | ops->cursor_flash = (!blank); | |
2213 | ||
2214 | if (fb_blank(info, blank)) | |
2215 | fbcon_generic_blank(vc, info, blank); | |
2216 | } | |
2217 | ||
88fb2c6e AD |
2218 | if (!blank) |
2219 | update_screen(vc); | |
2220 | } | |
2221 | ||
2222 | if (!blank) | |
2223 | fbcon_add_cursor_timer(info); | |
2224 | else | |
2225 | fbcon_del_cursor_timer(info); | |
1da177e4 | 2226 | |
88fb2c6e | 2227 | return 0; |
1da177e4 LT |
2228 | } |
2229 | ||
2230 | static void fbcon_free_font(struct display *p) | |
2231 | { | |
2232 | if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) | |
2233 | kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); | |
2234 | p->fontdata = NULL; | |
2235 | p->userfont = 0; | |
2236 | } | |
2237 | ||
2238 | static int fbcon_get_font(struct vc_data *vc, struct console_font *font) | |
2239 | { | |
2240 | u8 *fontdata = vc->vc_font.data; | |
2241 | u8 *data = font->data; | |
2242 | int i, j; | |
2243 | ||
2244 | font->width = vc->vc_font.width; | |
2245 | font->height = vc->vc_font.height; | |
2246 | font->charcount = vc->vc_hi_font_mask ? 512 : 256; | |
2247 | if (!font->data) | |
2248 | return 0; | |
2249 | ||
2250 | if (font->width <= 8) { | |
2251 | j = vc->vc_font.height; | |
2252 | for (i = 0; i < font->charcount; i++) { | |
2253 | memcpy(data, fontdata, j); | |
2254 | memset(data + j, 0, 32 - j); | |
2255 | data += 32; | |
2256 | fontdata += j; | |
2257 | } | |
2258 | } else if (font->width <= 16) { | |
2259 | j = vc->vc_font.height * 2; | |
2260 | for (i = 0; i < font->charcount; i++) { | |
2261 | memcpy(data, fontdata, j); | |
2262 | memset(data + j, 0, 64 - j); | |
2263 | data += 64; | |
2264 | fontdata += j; | |
2265 | } | |
2266 | } else if (font->width <= 24) { | |
2267 | for (i = 0; i < font->charcount; i++) { | |
2268 | for (j = 0; j < vc->vc_font.height; j++) { | |
2269 | *data++ = fontdata[0]; | |
2270 | *data++ = fontdata[1]; | |
2271 | *data++ = fontdata[2]; | |
2272 | fontdata += sizeof(u32); | |
2273 | } | |
2274 | memset(data, 0, 3 * (32 - j)); | |
2275 | data += 3 * (32 - j); | |
2276 | } | |
2277 | } else { | |
2278 | j = vc->vc_font.height * 4; | |
2279 | for (i = 0; i < font->charcount; i++) { | |
2280 | memcpy(data, fontdata, j); | |
2281 | memset(data + j, 0, 128 - j); | |
2282 | data += 128; | |
2283 | fontdata += j; | |
2284 | } | |
2285 | } | |
2286 | return 0; | |
2287 | } | |
2288 | ||
2289 | static int fbcon_do_set_font(struct vc_data *vc, int w, int h, | |
2f4516db | 2290 | const u8 * data, int userfont) |
1da177e4 LT |
2291 | { |
2292 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
e4fc2761 | 2293 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
2294 | struct display *p = &fb_display[vc->vc_num]; |
2295 | int resize; | |
2296 | int cnt; | |
2297 | char *old_data = NULL; | |
2298 | ||
2299 | if (CON_IS_VISIBLE(vc) && softback_lines) | |
2300 | fbcon_set_origin(vc); | |
2301 | ||
2302 | resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); | |
2303 | if (p->userfont) | |
2304 | old_data = vc->vc_font.data; | |
2305 | if (userfont) | |
2306 | cnt = FNTCHARCNT(data); | |
2307 | else | |
2308 | cnt = 256; | |
2f4516db | 2309 | vc->vc_font.data = (void *)(p->fontdata = data); |
1da177e4 LT |
2310 | if ((p->userfont = userfont)) |
2311 | REFCOUNT(data)++; | |
2312 | vc->vc_font.width = w; | |
2313 | vc->vc_font.height = h; | |
2314 | if (vc->vc_hi_font_mask && cnt == 256) { | |
2315 | vc->vc_hi_font_mask = 0; | |
2316 | if (vc->vc_can_do_color) { | |
2317 | vc->vc_complement_mask >>= 1; | |
2318 | vc->vc_s_complement_mask >>= 1; | |
2319 | } | |
2320 | ||
2321 | /* ++Edmund: reorder the attribute bits */ | |
2322 | if (vc->vc_can_do_color) { | |
2323 | unsigned short *cp = | |
2324 | (unsigned short *) vc->vc_origin; | |
2325 | int count = vc->vc_screenbuf_size / 2; | |
2326 | unsigned short c; | |
2327 | for (; count > 0; count--, cp++) { | |
2328 | c = scr_readw(cp); | |
2329 | scr_writew(((c & 0xfe00) >> 1) | | |
2330 | (c & 0xff), cp); | |
2331 | } | |
2332 | c = vc->vc_video_erase_char; | |
2333 | vc->vc_video_erase_char = | |
2334 | ((c & 0xfe00) >> 1) | (c & 0xff); | |
2335 | vc->vc_attr >>= 1; | |
2336 | } | |
2337 | } else if (!vc->vc_hi_font_mask && cnt == 512) { | |
2338 | vc->vc_hi_font_mask = 0x100; | |
2339 | if (vc->vc_can_do_color) { | |
2340 | vc->vc_complement_mask <<= 1; | |
2341 | vc->vc_s_complement_mask <<= 1; | |
2342 | } | |
2343 | ||
2344 | /* ++Edmund: reorder the attribute bits */ | |
2345 | { | |
2346 | unsigned short *cp = | |
2347 | (unsigned short *) vc->vc_origin; | |
2348 | int count = vc->vc_screenbuf_size / 2; | |
2349 | unsigned short c; | |
2350 | for (; count > 0; count--, cp++) { | |
2351 | unsigned short newc; | |
2352 | c = scr_readw(cp); | |
2353 | if (vc->vc_can_do_color) | |
2354 | newc = | |
2355 | ((c & 0xff00) << 1) | (c & | |
2356 | 0xff); | |
2357 | else | |
2358 | newc = c & ~0x100; | |
2359 | scr_writew(newc, cp); | |
2360 | } | |
2361 | c = vc->vc_video_erase_char; | |
2362 | if (vc->vc_can_do_color) { | |
2363 | vc->vc_video_erase_char = | |
2364 | ((c & 0xff00) << 1) | (c & 0xff); | |
2365 | vc->vc_attr <<= 1; | |
2366 | } else | |
2367 | vc->vc_video_erase_char = c & ~0x100; | |
2368 | } | |
2369 | ||
2370 | } | |
2371 | ||
2372 | if (resize) { | |
e4fc2761 AD |
2373 | int cols, rows; |
2374 | ||
2375 | cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); | |
2376 | rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); | |
2377 | cols /= w; | |
2378 | rows /= h; | |
2379 | vc_resize(vc, cols, rows); | |
4d9c5b6e AD |
2380 | if (CON_IS_VISIBLE(vc) && softback_buf) |
2381 | fbcon_update_softback(vc); | |
1da177e4 LT |
2382 | } else if (CON_IS_VISIBLE(vc) |
2383 | && vc->vc_mode == KD_TEXT) { | |
2384 | fbcon_clear_margins(vc, 0); | |
2385 | update_screen(vc); | |
2386 | } | |
2387 | ||
2388 | if (old_data && (--REFCOUNT(old_data) == 0)) | |
2389 | kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); | |
2390 | return 0; | |
2391 | } | |
2392 | ||
2393 | static int fbcon_copy_font(struct vc_data *vc, int con) | |
2394 | { | |
2395 | struct display *od = &fb_display[con]; | |
2396 | struct console_font *f = &vc->vc_font; | |
2397 | ||
2398 | if (od->fontdata == f->data) | |
2399 | return 0; /* already the same font... */ | |
2400 | return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); | |
2401 | } | |
2402 | ||
2403 | /* | |
2404 | * User asked to set font; we are guaranteed that | |
2405 | * a) width and height are in range 1..32 | |
2406 | * b) charcount does not exceed 512 | |
2407 | * but lets not assume that, since someone might someday want to use larger | |
2408 | * fonts. And charcount of 512 is small for unicode support. | |
2409 | * | |
2410 | * However, user space gives the font in 32 rows , regardless of | |
2411 | * actual font height. So a new API is needed if support for larger fonts | |
2412 | * is ever implemented. | |
2413 | */ | |
2414 | ||
2415 | static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags) | |
2416 | { | |
2417 | unsigned charcount = font->charcount; | |
2418 | int w = font->width; | |
2419 | int h = font->height; | |
2420 | int size; | |
2421 | int i, csum; | |
2422 | u8 *new_data, *data = font->data; | |
2423 | int pitch = (font->width+7) >> 3; | |
2424 | ||
2425 | /* Is there a reason why fbconsole couldn't handle any charcount >256? | |
2426 | * If not this check should be changed to charcount < 256 */ | |
2427 | if (charcount != 256 && charcount != 512) | |
2428 | return -EINVAL; | |
2429 | ||
2430 | size = h * pitch * charcount; | |
2431 | ||
2432 | new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); | |
2433 | ||
2434 | if (!new_data) | |
2435 | return -ENOMEM; | |
2436 | ||
2437 | new_data += FONT_EXTRA_WORDS * sizeof(int); | |
2438 | FNTSIZE(new_data) = size; | |
2439 | FNTCHARCNT(new_data) = charcount; | |
2440 | REFCOUNT(new_data) = 0; /* usage counter */ | |
2441 | for (i=0; i< charcount; i++) { | |
2442 | memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); | |
2443 | } | |
2444 | ||
2445 | /* Since linux has a nice crc32 function use it for counting font | |
2446 | * checksums. */ | |
2447 | csum = crc32(0, new_data, size); | |
2448 | ||
2449 | FNTSUM(new_data) = csum; | |
2450 | /* Check if the same font is on some other console already */ | |
2451 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2452 | struct vc_data *tmp = vc_cons[i].d; | |
2453 | ||
2454 | if (fb_display[i].userfont && | |
2455 | fb_display[i].fontdata && | |
2456 | FNTSUM(fb_display[i].fontdata) == csum && | |
2457 | FNTSIZE(fb_display[i].fontdata) == size && | |
2458 | tmp->vc_font.width == w && | |
2459 | !memcmp(fb_display[i].fontdata, new_data, size)) { | |
2460 | kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); | |
2f4516db | 2461 | new_data = (u8 *)fb_display[i].fontdata; |
1da177e4 LT |
2462 | break; |
2463 | } | |
2464 | } | |
2465 | return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); | |
2466 | } | |
2467 | ||
2468 | static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) | |
2469 | { | |
2470 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2f4516db | 2471 | const struct font_desc *f; |
1da177e4 LT |
2472 | |
2473 | if (!name) | |
2474 | f = get_default_font(info->var.xres, info->var.yres); | |
2475 | else if (!(f = find_font(name))) | |
2476 | return -ENOENT; | |
2477 | ||
2478 | font->width = f->width; | |
2479 | font->height = f->height; | |
2480 | return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); | |
2481 | } | |
2482 | ||
2483 | static u16 palette_red[16]; | |
2484 | static u16 palette_green[16]; | |
2485 | static u16 palette_blue[16]; | |
2486 | ||
2487 | static struct fb_cmap palette_cmap = { | |
2488 | 0, 16, palette_red, palette_green, palette_blue, NULL | |
2489 | }; | |
2490 | ||
2491 | static int fbcon_set_palette(struct vc_data *vc, unsigned char *table) | |
2492 | { | |
2493 | struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; | |
2494 | int i, j, k, depth; | |
2495 | u8 val; | |
2496 | ||
2497 | if (fbcon_is_inactive(vc, info)) | |
2498 | return -EINVAL; | |
2499 | ||
2500 | if (!CON_IS_VISIBLE(vc)) | |
2501 | return 0; | |
2502 | ||
b8c90945 | 2503 | depth = fb_get_color_depth(&info->var, &info->fix); |
1da177e4 LT |
2504 | if (depth > 3) { |
2505 | for (i = j = 0; i < 16; i++) { | |
2506 | k = table[i]; | |
2507 | val = vc->vc_palette[j++]; | |
2508 | palette_red[k] = (val << 8) | val; | |
2509 | val = vc->vc_palette[j++]; | |
2510 | palette_green[k] = (val << 8) | val; | |
2511 | val = vc->vc_palette[j++]; | |
2512 | palette_blue[k] = (val << 8) | val; | |
2513 | } | |
2514 | palette_cmap.len = 16; | |
2515 | palette_cmap.start = 0; | |
2516 | /* | |
2517 | * If framebuffer is capable of less than 16 colors, | |
2518 | * use default palette of fbcon. | |
2519 | */ | |
2520 | } else | |
2521 | fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); | |
2522 | ||
2523 | return fb_set_cmap(&palette_cmap, info); | |
2524 | } | |
2525 | ||
2526 | static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) | |
2527 | { | |
2528 | unsigned long p; | |
2529 | int line; | |
2530 | ||
2531 | if (vc->vc_num != fg_console || !softback_lines) | |
2532 | return (u16 *) (vc->vc_origin + offset); | |
2533 | line = offset / vc->vc_size_row; | |
2534 | if (line >= softback_lines) | |
2535 | return (u16 *) (vc->vc_origin + offset - | |
2536 | softback_lines * vc->vc_size_row); | |
2537 | p = softback_curr + offset; | |
2538 | if (p >= softback_end) | |
2539 | p += softback_buf - softback_end; | |
2540 | return (u16 *) p; | |
2541 | } | |
2542 | ||
2543 | static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, | |
2544 | int *px, int *py) | |
2545 | { | |
2546 | unsigned long ret; | |
2547 | int x, y; | |
2548 | ||
2549 | if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { | |
2550 | unsigned long offset = (pos - vc->vc_origin) / 2; | |
2551 | ||
2552 | x = offset % vc->vc_cols; | |
2553 | y = offset / vc->vc_cols; | |
2554 | if (vc->vc_num == fg_console) | |
2555 | y += softback_lines; | |
2556 | ret = pos + (vc->vc_cols - x) * 2; | |
2557 | } else if (vc->vc_num == fg_console && softback_lines) { | |
2558 | unsigned long offset = pos - softback_curr; | |
2559 | ||
2560 | if (pos < softback_curr) | |
2561 | offset += softback_end - softback_buf; | |
2562 | offset /= 2; | |
2563 | x = offset % vc->vc_cols; | |
2564 | y = offset / vc->vc_cols; | |
2565 | ret = pos + (vc->vc_cols - x) * 2; | |
2566 | if (ret == softback_end) | |
2567 | ret = softback_buf; | |
2568 | if (ret == softback_in) | |
2569 | ret = vc->vc_origin; | |
2570 | } else { | |
2571 | /* Should not happen */ | |
2572 | x = y = 0; | |
2573 | ret = vc->vc_origin; | |
2574 | } | |
2575 | if (px) | |
2576 | *px = x; | |
2577 | if (py) | |
2578 | *py = y; | |
2579 | return ret; | |
2580 | } | |
2581 | ||
2582 | /* As we might be inside of softback, we may work with non-contiguous buffer, | |
2583 | that's why we have to use a separate routine. */ | |
2584 | static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) | |
2585 | { | |
2586 | while (cnt--) { | |
2587 | u16 a = scr_readw(p); | |
2588 | if (!vc->vc_can_do_color) | |
2589 | a ^= 0x0800; | |
2590 | else if (vc->vc_hi_font_mask == 0x100) | |
2591 | a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | | |
2592 | (((a) & 0x0e00) << 4); | |
2593 | else | |
2594 | a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | | |
2595 | (((a) & 0x0700) << 4); | |
2596 | scr_writew(a, p++); | |
2597 | if (p == (u16 *) softback_end) | |
2598 | p = (u16 *) softback_buf; | |
2599 | if (p == (u16 *) softback_in) | |
2600 | p = (u16 *) vc->vc_origin; | |
2601 | } | |
2602 | } | |
2603 | ||
2604 | static int fbcon_scrolldelta(struct vc_data *vc, int lines) | |
2605 | { | |
2606 | struct fb_info *info = registered_fb[con2fb_map[fg_console]]; | |
e4fc2761 | 2607 | struct fbcon_ops *ops = info->fbcon_par; |
1da177e4 LT |
2608 | struct display *p = &fb_display[fg_console]; |
2609 | int offset, limit, scrollback_old; | |
2610 | ||
2611 | if (softback_top) { | |
2612 | if (vc->vc_num != fg_console) | |
2613 | return 0; | |
2614 | if (vc->vc_mode != KD_TEXT || !lines) | |
2615 | return 0; | |
2616 | if (logo_shown >= 0) { | |
2617 | struct vc_data *conp2 = vc_cons[logo_shown].d; | |
2618 | ||
2619 | if (conp2->vc_top == logo_lines | |
2620 | && conp2->vc_bottom == conp2->vc_rows) | |
2621 | conp2->vc_top = 0; | |
2622 | if (logo_shown == vc->vc_num) { | |
2623 | unsigned long p, q; | |
2624 | int i; | |
2625 | ||
2626 | p = softback_in; | |
2627 | q = vc->vc_origin + | |
2628 | logo_lines * vc->vc_size_row; | |
2629 | for (i = 0; i < logo_lines; i++) { | |
2630 | if (p == softback_top) | |
2631 | break; | |
2632 | if (p == softback_buf) | |
2633 | p = softback_end; | |
2634 | p -= vc->vc_size_row; | |
2635 | q -= vc->vc_size_row; | |
2636 | scr_memcpyw((u16 *) q, (u16 *) p, | |
2637 | vc->vc_size_row); | |
2638 | } | |
2639 | softback_in = p; | |
2640 | update_region(vc, vc->vc_origin, | |
2641 | logo_lines * vc->vc_cols); | |
2642 | } | |
2643 | logo_shown = FBCON_LOGO_CANSHOW; | |
2644 | } | |
2645 | fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); | |
2646 | fbcon_redraw_softback(vc, p, lines); | |
2647 | fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); | |
2648 | return 0; | |
2649 | } | |
2650 | ||
2651 | if (!scrollback_phys_max) | |
2652 | return -ENOSYS; | |
2653 | ||
2654 | scrollback_old = scrollback_current; | |
2655 | scrollback_current -= lines; | |
2656 | if (scrollback_current < 0) | |
2657 | scrollback_current = 0; | |
2658 | else if (scrollback_current > scrollback_max) | |
2659 | scrollback_current = scrollback_max; | |
2660 | if (scrollback_current == scrollback_old) | |
2661 | return 0; | |
2662 | ||
2663 | if (fbcon_is_inactive(vc, info)) | |
2664 | return 0; | |
2665 | ||
2666 | fbcon_cursor(vc, CM_ERASE); | |
2667 | ||
2668 | offset = p->yscroll - scrollback_current; | |
2669 | limit = p->vrows; | |
2670 | switch (p->scrollmode) { | |
2671 | case SCROLL_WRAP_MOVE: | |
2672 | info->var.vmode |= FB_VMODE_YWRAP; | |
2673 | break; | |
2674 | case SCROLL_PAN_MOVE: | |
2675 | case SCROLL_PAN_REDRAW: | |
2676 | limit -= vc->vc_rows; | |
2677 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
2678 | break; | |
2679 | } | |
2680 | if (offset < 0) | |
2681 | offset += limit; | |
2682 | else if (offset >= limit) | |
2683 | offset -= limit; | |
e4fc2761 AD |
2684 | |
2685 | ops->var.xoffset = 0; | |
2686 | ops->var.yoffset = offset * vc->vc_font.height; | |
2687 | ops->update_start(info); | |
2688 | ||
1da177e4 LT |
2689 | if (!scrollback_current) |
2690 | fbcon_cursor(vc, CM_DRAW); | |
2691 | return 0; | |
2692 | } | |
2693 | ||
2694 | static int fbcon_set_origin(struct vc_data *vc) | |
2695 | { | |
2696 | if (softback_lines) | |
2697 | fbcon_scrolldelta(vc, softback_lines); | |
2698 | return 0; | |
2699 | } | |
2700 | ||
2701 | static void fbcon_suspended(struct fb_info *info) | |
2702 | { | |
2703 | struct vc_data *vc = NULL; | |
2704 | struct fbcon_ops *ops = info->fbcon_par; | |
2705 | ||
2706 | if (!ops || ops->currcon < 0) | |
2707 | return; | |
2708 | vc = vc_cons[ops->currcon].d; | |
2709 | ||
2710 | /* Clear cursor, restore saved data */ | |
2711 | fbcon_cursor(vc, CM_ERASE); | |
2712 | } | |
2713 | ||
2714 | static void fbcon_resumed(struct fb_info *info) | |
2715 | { | |
2716 | struct vc_data *vc; | |
2717 | struct fbcon_ops *ops = info->fbcon_par; | |
2718 | ||
2719 | if (!ops || ops->currcon < 0) | |
2720 | return; | |
2721 | vc = vc_cons[ops->currcon].d; | |
2722 | ||
2723 | update_screen(vc); | |
2724 | } | |
2725 | ||
2726 | static void fbcon_modechanged(struct fb_info *info) | |
2727 | { | |
2728 | struct fbcon_ops *ops = info->fbcon_par; | |
2729 | struct vc_data *vc; | |
2730 | struct display *p; | |
2731 | int rows, cols; | |
2732 | ||
2733 | if (!ops || ops->currcon < 0) | |
2734 | return; | |
2735 | vc = vc_cons[ops->currcon].d; | |
e4fc2761 AD |
2736 | if (vc->vc_mode != KD_TEXT || |
2737 | registered_fb[con2fb_map[ops->currcon]] != info) | |
1da177e4 LT |
2738 | return; |
2739 | ||
2740 | p = &fb_display[vc->vc_num]; | |
e4fc2761 | 2741 | set_blitting_type(vc, info, p); |
1da177e4 LT |
2742 | |
2743 | if (CON_IS_VISIBLE(vc)) { | |
2744 | var_to_display(p, &info->var, info); | |
e4fc2761 AD |
2745 | cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
2746 | rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); | |
2747 | cols /= vc->vc_font.width; | |
2748 | rows /= vc->vc_font.height; | |
1da177e4 LT |
2749 | vc_resize(vc, cols, rows); |
2750 | updatescrollmode(p, info, vc); | |
2751 | scrollback_max = 0; | |
2752 | scrollback_current = 0; | |
4e1567d3 AD |
2753 | |
2754 | if (!fbcon_is_inactive(vc, info)) { | |
2755 | ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; | |
2756 | ops->update_start(info); | |
2757 | } | |
2758 | ||
1da177e4 LT |
2759 | fbcon_set_palette(vc, color_table); |
2760 | update_screen(vc); | |
4d9c5b6e AD |
2761 | if (softback_buf) |
2762 | fbcon_update_softback(vc); | |
1da177e4 LT |
2763 | } |
2764 | } | |
2765 | ||
7726e9e1 AD |
2766 | static void fbcon_set_all_vcs(struct fb_info *info) |
2767 | { | |
2768 | struct fbcon_ops *ops = info->fbcon_par; | |
2769 | struct vc_data *vc; | |
2770 | struct display *p; | |
2771 | int i, rows, cols; | |
2772 | ||
2773 | if (!ops || ops->currcon < 0) | |
2774 | return; | |
2775 | ||
2776 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2777 | vc = vc_cons[i].d; | |
2778 | if (!vc || vc->vc_mode != KD_TEXT || | |
2779 | registered_fb[con2fb_map[i]] != info) | |
2780 | continue; | |
2781 | ||
2782 | p = &fb_display[vc->vc_num]; | |
e4fc2761 | 2783 | set_blitting_type(vc, info, p); |
7726e9e1 | 2784 | var_to_display(p, &info->var, info); |
e4fc2761 AD |
2785 | cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
2786 | rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); | |
2787 | cols /= vc->vc_font.width; | |
2788 | rows /= vc->vc_font.height; | |
7726e9e1 AD |
2789 | vc_resize(vc, cols, rows); |
2790 | ||
2791 | if (CON_IS_VISIBLE(vc)) { | |
2792 | updatescrollmode(p, info, vc); | |
2793 | scrollback_max = 0; | |
2794 | scrollback_current = 0; | |
4e1567d3 AD |
2795 | |
2796 | if (!fbcon_is_inactive(vc, info)) { | |
2797 | ops->var.xoffset = ops->var.yoffset = | |
2798 | p->yscroll = 0; | |
2799 | ops->update_start(info); | |
2800 | } | |
2801 | ||
7726e9e1 AD |
2802 | fbcon_set_palette(vc, color_table); |
2803 | update_screen(vc); | |
4d9c5b6e AD |
2804 | if (softback_buf) |
2805 | fbcon_update_softback(vc); | |
7726e9e1 AD |
2806 | } |
2807 | } | |
2808 | } | |
2809 | ||
1da177e4 LT |
2810 | static int fbcon_mode_deleted(struct fb_info *info, |
2811 | struct fb_videomode *mode) | |
2812 | { | |
2813 | struct fb_info *fb_info; | |
2814 | struct display *p; | |
2815 | int i, j, found = 0; | |
2816 | ||
2817 | /* before deletion, ensure that mode is not in use */ | |
2818 | for (i = first_fb_vc; i <= last_fb_vc; i++) { | |
2819 | j = con2fb_map[i]; | |
2820 | if (j == -1) | |
2821 | continue; | |
2822 | fb_info = registered_fb[j]; | |
2823 | if (fb_info != info) | |
2824 | continue; | |
2825 | p = &fb_display[i]; | |
2826 | if (!p || !p->mode) | |
2827 | continue; | |
2828 | if (fb_mode_is_equal(p->mode, mode)) { | |
2829 | found = 1; | |
2830 | break; | |
2831 | } | |
2832 | } | |
2833 | return found; | |
2834 | } | |
2835 | ||
2836 | static int fbcon_fb_registered(int idx) | |
2837 | { | |
2838 | int ret = 0, i; | |
2839 | ||
2840 | if (info_idx == -1) { | |
2841 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2842 | if (con2fb_map_boot[i] == idx) { | |
2843 | info_idx = idx; | |
2844 | break; | |
2845 | } | |
2846 | } | |
2847 | if (info_idx != -1) | |
2848 | ret = fbcon_takeover(1); | |
2849 | } else { | |
2850 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2851 | if (con2fb_map_boot[i] == idx) | |
2852 | set_con2fb_map(i, idx, 0); | |
2853 | } | |
2854 | } | |
2855 | ||
2856 | return ret; | |
2857 | } | |
2858 | ||
2859 | static void fbcon_fb_blanked(struct fb_info *info, int blank) | |
2860 | { | |
2861 | struct fbcon_ops *ops = info->fbcon_par; | |
2862 | struct vc_data *vc; | |
2863 | ||
2864 | if (!ops || ops->currcon < 0) | |
2865 | return; | |
2866 | ||
2867 | vc = vc_cons[ops->currcon].d; | |
2868 | if (vc->vc_mode != KD_TEXT || | |
2869 | registered_fb[con2fb_map[ops->currcon]] != info) | |
2870 | return; | |
2871 | ||
2872 | if (CON_IS_VISIBLE(vc)) { | |
2873 | if (blank) | |
2874 | do_blank_screen(0); | |
2875 | else | |
2876 | do_unblank_screen(0); | |
2877 | } | |
2878 | ops->blank_state = blank; | |
2879 | } | |
2880 | ||
2881 | static void fbcon_new_modelist(struct fb_info *info) | |
2882 | { | |
2883 | int i; | |
2884 | struct vc_data *vc; | |
2885 | struct fb_var_screeninfo var; | |
2886 | struct fb_videomode *mode; | |
2887 | ||
2888 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
2889 | if (registered_fb[con2fb_map[i]] != info) | |
2890 | continue; | |
2891 | if (!fb_display[i].mode) | |
2892 | continue; | |
2893 | vc = vc_cons[i].d; | |
2894 | display_to_var(&var, &fb_display[i]); | |
8fb6567e MJ |
2895 | mode = fb_find_nearest_mode(fb_display[i].mode, |
2896 | &info->modelist); | |
1da177e4 LT |
2897 | fb_videomode_to_var(&var, mode); |
2898 | ||
2899 | if (vc) | |
2900 | fbcon_set_disp(info, &var, vc); | |
2901 | else | |
2902 | fbcon_preset_disp(info, &var, i); | |
2903 | ||
2904 | } | |
2905 | } | |
2906 | ||
2907 | static int fbcon_event_notify(struct notifier_block *self, | |
2908 | unsigned long action, void *data) | |
2909 | { | |
2910 | struct fb_event *event = data; | |
2911 | struct fb_info *info = event->info; | |
2912 | struct fb_videomode *mode; | |
2913 | struct fb_con2fbmap *con2fb; | |
2914 | int ret = 0; | |
2915 | ||
2916 | switch(action) { | |
2917 | case FB_EVENT_SUSPEND: | |
2918 | fbcon_suspended(info); | |
2919 | break; | |
2920 | case FB_EVENT_RESUME: | |
2921 | fbcon_resumed(info); | |
2922 | break; | |
2923 | case FB_EVENT_MODE_CHANGE: | |
2924 | fbcon_modechanged(info); | |
2925 | break; | |
7726e9e1 AD |
2926 | case FB_EVENT_MODE_CHANGE_ALL: |
2927 | fbcon_set_all_vcs(info); | |
2928 | break; | |
1da177e4 LT |
2929 | case FB_EVENT_MODE_DELETE: |
2930 | mode = event->data; | |
2931 | ret = fbcon_mode_deleted(info, mode); | |
2932 | break; | |
2933 | case FB_EVENT_FB_REGISTERED: | |
2934 | ret = fbcon_fb_registered(info->node); | |
2935 | break; | |
2936 | case FB_EVENT_SET_CONSOLE_MAP: | |
2937 | con2fb = event->data; | |
2938 | ret = set_con2fb_map(con2fb->console - 1, | |
2939 | con2fb->framebuffer, 1); | |
2940 | break; | |
2941 | case FB_EVENT_GET_CONSOLE_MAP: | |
2942 | con2fb = event->data; | |
2943 | con2fb->framebuffer = con2fb_map[con2fb->console - 1]; | |
2944 | break; | |
2945 | case FB_EVENT_BLANK: | |
2946 | fbcon_fb_blanked(info, *(int *)event->data); | |
2947 | break; | |
2948 | case FB_EVENT_NEW_MODELIST: | |
2949 | fbcon_new_modelist(info); | |
2950 | break; | |
a812c94b AD |
2951 | case FB_EVENT_SET_CON_ROTATE: |
2952 | fbcon_rotate(info, *(int *)event->data); | |
2953 | break; | |
2954 | case FB_EVENT_GET_CON_ROTATE: | |
2955 | ret = fbcon_get_rotate(info); | |
2956 | break; | |
2957 | case FB_EVENT_SET_CON_ROTATE_ALL: | |
2958 | fbcon_rotate_all(info, *(int *)event->data); | |
1da177e4 LT |
2959 | } |
2960 | ||
2961 | return ret; | |
2962 | } | |
2963 | ||
2964 | /* | |
2965 | * The console `switch' structure for the frame buffer based console | |
2966 | */ | |
2967 | ||
2968 | static const struct consw fb_con = { | |
2969 | .owner = THIS_MODULE, | |
2970 | .con_startup = fbcon_startup, | |
2971 | .con_init = fbcon_init, | |
2972 | .con_deinit = fbcon_deinit, | |
2973 | .con_clear = fbcon_clear, | |
2974 | .con_putc = fbcon_putc, | |
2975 | .con_putcs = fbcon_putcs, | |
2976 | .con_cursor = fbcon_cursor, | |
2977 | .con_scroll = fbcon_scroll, | |
2978 | .con_bmove = fbcon_bmove, | |
2979 | .con_switch = fbcon_switch, | |
2980 | .con_blank = fbcon_blank, | |
2981 | .con_font_set = fbcon_set_font, | |
2982 | .con_font_get = fbcon_get_font, | |
2983 | .con_font_default = fbcon_set_def_font, | |
2984 | .con_font_copy = fbcon_copy_font, | |
2985 | .con_set_palette = fbcon_set_palette, | |
2986 | .con_scrolldelta = fbcon_scrolldelta, | |
2987 | .con_set_origin = fbcon_set_origin, | |
2988 | .con_invert_region = fbcon_invert_region, | |
2989 | .con_screen_pos = fbcon_screen_pos, | |
2990 | .con_getxy = fbcon_getxy, | |
2991 | .con_resize = fbcon_resize, | |
2992 | }; | |
2993 | ||
2994 | static struct notifier_block fbcon_event_notifier = { | |
2995 | .notifier_call = fbcon_event_notify, | |
2996 | }; | |
2997 | ||
2998 | static int __init fb_console_init(void) | |
2999 | { | |
3000 | int i; | |
3001 | ||
3002 | acquire_console_sem(); | |
3003 | fb_register_client(&fbcon_event_notifier); | |
3004 | release_console_sem(); | |
3005 | ||
3006 | for (i = 0; i < MAX_NR_CONSOLES; i++) | |
3007 | con2fb_map[i] = -1; | |
3008 | ||
3009 | if (num_registered_fb) { | |
3010 | for (i = 0; i < FB_MAX; i++) { | |
3011 | if (registered_fb[i] != NULL) { | |
3012 | info_idx = i; | |
3013 | break; | |
3014 | } | |
3015 | } | |
3016 | fbcon_takeover(0); | |
3017 | } | |
3018 | ||
3019 | return 0; | |
3020 | } | |
3021 | ||
3022 | module_init(fb_console_init); | |
3023 | ||
3024 | #ifdef MODULE | |
3025 | ||
3026 | static void __exit fb_console_exit(void) | |
3027 | { | |
3028 | acquire_console_sem(); | |
3029 | fb_unregister_client(&fbcon_event_notifier); | |
3030 | release_console_sem(); | |
3031 | give_up_console(&fb_con); | |
3032 | } | |
3033 | ||
3034 | module_exit(fb_console_exit); | |
3035 | ||
3036 | #endif | |
3037 | ||
3038 | MODULE_LICENSE("GPL"); |