2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver
4 * Copyright (C) 1995 Geert Uytterhoeven
7 * This file is based on the original Amiga console driver (amicon.c):
9 * Copyright (C) 1993 Hamish Macdonald
11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
13 * with work by William Rucklidge (wjr@cs.cornell.edu)
15 * Jes Sorensen (jds@kom.auc.dk)
18 * and on the original Atari console driver (atacon.c):
20 * Copyright (C) 1993 Bjoern Brauel
23 * with work by Guenther Kelleter
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)
32 * Random hacking by Martin Mares <mj@ucw.cz>
34 * 2001 - Documented with DocBook
35 * - Brad Douglas <brad@neruo.com>
37 * The low level operations for the various display memory organizations are
38 * now in separate source files.
40 * Currently the following organizations are supported:
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
47 * o vga VGA characters/attributes
51 * - Implement 16 plane mode (iplan2p16)
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
61 #include <linux/config.h>
62 #include <linux/module.h>
63 #include <linux/types.h>
64 #include <linux/sched.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>
72 #include <linux/slab.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 */
82 #include <asm/system.h>
83 #include <asm/uaccess.h>
85 #include <asm/atariints.h>
88 #include <asm/macints.h>
90 #if defined(__mc68000__) || defined(CONFIG_APUS)
91 #include <asm/machdep.h>
92 #include <asm/setup.h>
98 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
100 # define DPRINTK(fmt, args...)
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 */
109 struct display fb_display
[MAX_NR_CONSOLES
];
110 static signed char con2fb_map
[MAX_NR_CONSOLES
];
111 static signed char con2fb_map_boot
[MAX_NR_CONSOLES
];
112 static int logo_height
;
113 static int logo_lines
;
114 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
116 static int logo_shown
= FBCON_LOGO_CANSHOW
;
117 /* Software scrollback */
118 static int fbcon_softback_size
= 32768;
119 static unsigned long softback_buf
, softback_curr
;
120 static unsigned long softback_in
;
121 static unsigned long softback_top
, softback_end
;
122 static int softback_lines
;
123 /* console mappings */
124 static int first_fb_vc
;
125 static int last_fb_vc
= MAX_NR_CONSOLES
- 1;
126 static int fbcon_is_default
= 1;
128 static char fontname
[40];
130 /* current fb_info */
131 static int info_idx
= -1;
133 static const struct consw fb_con
;
135 #define CM_SOFTBACK (8)
137 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
139 static void fbcon_free_font(struct display
*);
140 static int fbcon_set_origin(struct vc_data
*);
142 #define CURSOR_DRAW_DELAY (1)
144 /* # VBL ints between cursor state changes */
145 #define ATARI_CURSOR_BLINK_RATE (42)
146 #define MAC_CURSOR_BLINK_RATE (32)
147 #define DEFAULT_CURSOR_BLINK_RATE (20)
149 static int vbl_cursor_cnt
;
151 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
154 * Interface used by the world
157 static const char *fbcon_startup(void);
158 static void fbcon_init(struct vc_data
*vc
, int init
);
159 static void fbcon_deinit(struct vc_data
*vc
);
160 static void fbcon_clear(struct vc_data
*vc
, int sy
, int sx
, int height
,
162 static void fbcon_putc(struct vc_data
*vc
, int c
, int ypos
, int xpos
);
163 static void fbcon_putcs(struct vc_data
*vc
, const unsigned short *s
,
164 int count
, int ypos
, int xpos
);
165 static void fbcon_clear_margins(struct vc_data
*vc
, int bottom_only
);
166 static void fbcon_cursor(struct vc_data
*vc
, int mode
);
167 static int fbcon_scroll(struct vc_data
*vc
, int t
, int b
, int dir
,
169 static void fbcon_bmove(struct vc_data
*vc
, int sy
, int sx
, int dy
, int dx
,
170 int height
, int width
);
171 static int fbcon_switch(struct vc_data
*vc
);
172 static int fbcon_blank(struct vc_data
*vc
, int blank
, int mode_switch
);
173 static int fbcon_set_palette(struct vc_data
*vc
, unsigned char *table
);
174 static int fbcon_scrolldelta(struct vc_data
*vc
, int lines
);
179 static __inline__
int real_y(struct display
*p
, int ypos
);
180 static __inline__
void ywrap_up(struct vc_data
*vc
, int count
);
181 static __inline__
void ywrap_down(struct vc_data
*vc
, int count
);
182 static __inline__
void ypan_up(struct vc_data
*vc
, int count
);
183 static __inline__
void ypan_down(struct vc_data
*vc
, int count
);
184 static void fbcon_bmove_rec(struct vc_data
*vc
, struct display
*p
, int sy
, int sx
,
185 int dy
, int dx
, int height
, int width
, u_int y_break
);
186 static void fbcon_set_disp(struct fb_info
*info
, struct fb_var_screeninfo
*var
,
188 static void fbcon_preset_disp(struct fb_info
*info
, struct fb_var_screeninfo
*var
,
190 static void fbcon_redraw_move(struct vc_data
*vc
, struct display
*p
,
191 int line
, int count
, int dy
);
195 * On the Macintoy, there may or may not be a working VBL int. We need to probe
197 static int vbl_detected
;
199 static irqreturn_t
fb_vbl_detect(int irq
, void *dummy
, struct pt_regs
*fp
)
206 static inline int fbcon_is_inactive(struct vc_data
*vc
, struct fb_info
*info
)
208 struct fbcon_ops
*ops
= info
->fbcon_par
;
210 return (info
->state
!= FBINFO_STATE_RUNNING
||
211 vc
->vc_mode
!= KD_TEXT
|| ops
->graphics
);
214 static inline int get_color(struct vc_data
*vc
, struct fb_info
*info
,
217 int depth
= fb_get_color_depth(&info
->var
);
220 if (console_blanked
) {
221 unsigned short charmask
= vc
->vc_hi_font_mask
? 0x1ff : 0xff;
223 c
= vc
->vc_video_erase_char
& charmask
;
227 color
= (is_fg
) ? attr_fgcol((vc
->vc_hi_font_mask
) ? 9 : 8, c
)
228 : attr_bgcol((vc
->vc_hi_font_mask
) ? 13 : 12, c
);
234 int fg
= (info
->fix
.visual
!= FB_VISUAL_MONO01
) ? 1 : 0;
235 int bg
= (info
->fix
.visual
!= FB_VISUAL_MONO01
) ? 0 : 1;
240 color
= (is_fg
) ? fg
: bg
;
245 * Scale down 16-colors to 4 colors. Default 4-color palette
252 * Last 8 entries of default 16-color palette is a more intense
253 * version of the first 8 (i.e., same chrominance, different
264 static void fb_flashcursor(void *private)
266 struct fb_info
*info
= private;
267 struct fbcon_ops
*ops
= info
->fbcon_par
;
269 struct vc_data
*vc
= NULL
;
273 if (ops
->currcon
!= -1)
274 vc
= vc_cons
[ops
->currcon
].d
;
276 if (!vc
|| !CON_IS_VISIBLE(vc
) ||
277 fbcon_is_inactive(vc
, info
) ||
278 registered_fb
[con2fb_map
[vc
->vc_num
]] != info
)
280 acquire_console_sem();
281 p
= &fb_display
[vc
->vc_num
];
282 c
= scr_readw((u16
*) vc
->vc_pos
);
283 mode
= (!ops
->cursor_flash
|| ops
->cursor_state
.enable
) ?
285 ops
->cursor(vc
, info
, p
, mode
, softback_lines
, get_color(vc
, info
, c
, 1),
286 get_color(vc
, info
, c
, 0));
287 release_console_sem();
290 #if defined(CONFIG_ATARI) || defined(CONFIG_MAC)
291 static int cursor_blink_rate
;
292 static irqreturn_t
fb_vbl_handler(int irq
, void *dev_id
, struct pt_regs
*fp
)
294 struct fb_info
*info
= dev_id
;
296 if (vbl_cursor_cnt
&& --vbl_cursor_cnt
== 0) {
297 schedule_work(&info
->queue
);
298 vbl_cursor_cnt
= cursor_blink_rate
;
304 static void cursor_timer_handler(unsigned long dev_addr
)
306 struct fb_info
*info
= (struct fb_info
*) dev_addr
;
307 struct fbcon_ops
*ops
= info
->fbcon_par
;
309 schedule_work(&info
->queue
);
310 mod_timer(&ops
->cursor_timer
, jiffies
+ HZ
/5);
314 static int __init
fb_console_setup(char *this_opt
)
319 if (!this_opt
|| !*this_opt
)
322 while ((options
= strsep(&this_opt
, ",")) != NULL
) {
323 if (!strncmp(options
, "font:", 5))
324 strcpy(fontname
, options
+ 5);
326 if (!strncmp(options
, "scrollback:", 11)) {
329 fbcon_softback_size
= simple_strtoul(options
, &options
, 0);
330 if (*options
== 'k' || *options
== 'K') {
331 fbcon_softback_size
*= 1024;
341 if (!strncmp(options
, "map:", 4)) {
344 for (i
= 0, j
= 0; i
< MAX_NR_CONSOLES
; i
++) {
348 (options
[j
++]-'0') % FB_MAX
;
353 if (!strncmp(options
, "vc:", 3)) {
356 first_fb_vc
= simple_strtoul(options
, &options
, 10) - 1;
359 if (*options
++ == '-')
360 last_fb_vc
= simple_strtoul(options
, &options
, 10) - 1;
361 fbcon_is_default
= 0;
367 __setup("fbcon=", fb_console_setup
);
370 static int search_fb_in_map(int idx
)
374 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
375 if (con2fb_map
[i
] == idx
)
381 static int search_for_mapped_con(void)
385 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
386 if (con2fb_map
[i
] != -1)
392 static int fbcon_takeover(int show_logo
)
396 if (!num_registered_fb
)
400 logo_shown
= FBCON_LOGO_DONTSHOW
;
402 for (i
= first_fb_vc
; i
<= last_fb_vc
; i
++)
403 con2fb_map
[i
] = info_idx
;
405 err
= take_over_console(&fb_con
, first_fb_vc
, last_fb_vc
,
408 for (i
= first_fb_vc
; i
<= last_fb_vc
; i
++) {
417 static void fbcon_prepare_logo(struct vc_data
*vc
, struct fb_info
*info
,
418 int cols
, int rows
, int new_cols
, int new_rows
)
420 /* Need to make room for the logo */
421 int cnt
, erase
= vc
->vc_video_erase_char
, step
;
422 unsigned short *save
= NULL
, *r
, *q
;
425 * remove underline attribute from erase character
426 * if black and white framebuffer.
428 if (fb_get_color_depth(&info
->var
) == 1)
430 logo_height
= fb_prepare_logo(info
);
431 logo_lines
= (logo_height
+ vc
->vc_font
.height
- 1) /
433 q
= (unsigned short *) (vc
->vc_origin
+
434 vc
->vc_size_row
* rows
);
435 step
= logo_lines
* cols
;
436 for (r
= q
- logo_lines
* cols
; r
< q
; r
++)
437 if (scr_readw(r
) != vc
->vc_video_erase_char
)
439 if (r
!= q
&& new_rows
>= rows
+ logo_lines
) {
440 save
= kmalloc(logo_lines
* new_cols
* 2, GFP_KERNEL
);
442 int i
= cols
< new_cols
? cols
: new_cols
;
443 scr_memsetw(save
, erase
, logo_lines
* new_cols
* 2);
445 for (cnt
= 0; cnt
< logo_lines
; cnt
++, r
+= i
)
446 scr_memcpyw(save
+ cnt
* new_cols
, r
, 2 * i
);
451 /* We can scroll screen down */
453 for (cnt
= rows
- logo_lines
; cnt
> 0; cnt
--) {
454 scr_memcpyw(r
+ step
, r
, vc
->vc_size_row
);
458 vc
->vc_y
+= logo_lines
;
459 vc
->vc_pos
+= logo_lines
* vc
->vc_size_row
;
462 scr_memsetw((unsigned short *) vc
->vc_origin
,
464 vc
->vc_size_row
* logo_lines
);
466 if (CON_IS_VISIBLE(vc
) && vc
->vc_mode
== KD_TEXT
) {
467 fbcon_clear_margins(vc
, 0);
472 q
= (unsigned short *) (vc
->vc_origin
+
475 scr_memcpyw(q
, save
, logo_lines
* new_cols
* 2);
476 vc
->vc_y
+= logo_lines
;
477 vc
->vc_pos
+= logo_lines
* vc
->vc_size_row
;
481 if (logo_lines
> vc
->vc_bottom
) {
482 logo_shown
= FBCON_LOGO_CANSHOW
;
484 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
485 } else if (logo_shown
!= FBCON_LOGO_DONTSHOW
) {
486 logo_shown
= FBCON_LOGO_DRAW
;
487 vc
->vc_top
= logo_lines
;
491 #ifdef CONFIG_FB_TILEBLITTING
492 static void set_blitting_type(struct vc_data
*vc
, struct fb_info
*info
,
495 struct fbcon_ops
*ops
= info
->fbcon_par
;
497 if ((info
->flags
& FBINFO_MISC_TILEBLITTING
))
498 fbcon_set_tileops(vc
, info
, p
, ops
);
500 fbcon_set_bitops(ops
);
503 static void set_blitting_type(struct vc_data
*vc
, struct fb_info
*info
,
506 struct fbcon_ops
*ops
= info
->fbcon_par
;
508 info
->flags
&= ~FBINFO_MISC_TILEBLITTING
;
509 fbcon_set_bitops(ops
);
511 #endif /* CONFIG_MISC_TILEBLITTING */
514 static int con2fb_acquire_newinfo(struct vc_data
*vc
, struct fb_info
*info
,
515 int unit
, int oldidx
)
517 struct fbcon_ops
*ops
= NULL
;
520 if (!try_module_get(info
->fbops
->owner
))
523 if (!err
&& info
->fbops
->fb_open
&&
524 info
->fbops
->fb_open(info
, 0))
528 ops
= kmalloc(sizeof(struct fbcon_ops
), GFP_KERNEL
);
534 memset(ops
, 0, sizeof(struct fbcon_ops
));
535 info
->fbcon_par
= ops
;
536 set_blitting_type(vc
, info
, NULL
);
540 con2fb_map
[unit
] = oldidx
;
541 module_put(info
->fbops
->owner
);
547 static int con2fb_release_oldinfo(struct vc_data
*vc
, struct fb_info
*oldinfo
,
548 struct fb_info
*newinfo
, int unit
,
549 int oldidx
, int found
)
551 struct fbcon_ops
*ops
= oldinfo
->fbcon_par
;
554 if (oldinfo
->fbops
->fb_release
&&
555 oldinfo
->fbops
->fb_release(oldinfo
, 0)) {
556 con2fb_map
[unit
] = oldidx
;
557 if (!found
&& newinfo
->fbops
->fb_release
)
558 newinfo
->fbops
->fb_release(newinfo
, 0);
560 module_put(newinfo
->fbops
->owner
);
565 if (oldinfo
->queue
.func
== fb_flashcursor
)
566 del_timer_sync(&ops
->cursor_timer
);
568 kfree(ops
->cursor_state
.mask
);
569 kfree(ops
->cursor_data
);
570 kfree(oldinfo
->fbcon_par
);
571 oldinfo
->fbcon_par
= NULL
;
572 module_put(oldinfo
->fbops
->owner
);
578 static void con2fb_init_newinfo(struct fb_info
*info
)
580 if (!info
->queue
.func
|| info
->queue
.func
== fb_flashcursor
) {
581 struct fbcon_ops
*ops
= info
->fbcon_par
;
583 if (!info
->queue
.func
)
584 INIT_WORK(&info
->queue
, fb_flashcursor
, info
);
586 init_timer(&ops
->cursor_timer
);
587 ops
->cursor_timer
.function
= cursor_timer_handler
;
588 ops
->cursor_timer
.expires
= jiffies
+ HZ
/ 5;
589 ops
->cursor_timer
.data
= (unsigned long ) info
;
590 add_timer(&ops
->cursor_timer
);
594 static void con2fb_init_display(struct vc_data
*vc
, struct fb_info
*info
,
595 int unit
, int show_logo
)
597 struct fbcon_ops
*ops
= info
->fbcon_par
;
599 ops
->currcon
= fg_console
;
601 if (info
->fbops
->fb_set_par
&& !(ops
->flags
& FBCON_FLAGS_INIT
))
602 info
->fbops
->fb_set_par(info
);
604 ops
->flags
|= FBCON_FLAGS_INIT
;
608 fbcon_set_disp(info
, &info
->var
, vc
);
610 fbcon_preset_disp(info
, &info
->var
, unit
);
613 struct vc_data
*fg_vc
= vc_cons
[fg_console
].d
;
614 struct fb_info
*fg_info
=
615 registered_fb
[con2fb_map
[fg_console
]];
617 fbcon_prepare_logo(fg_vc
, fg_info
, fg_vc
->vc_cols
,
618 fg_vc
->vc_rows
, fg_vc
->vc_cols
,
622 update_screen(vc_cons
[fg_console
].d
);
626 * set_con2fb_map - map console to frame buffer device
627 * @unit: virtual console number to map
628 * @newidx: frame buffer index to map virtual console to
629 * @user: user request
631 * Maps a virtual console @unit to a frame buffer device
634 static int set_con2fb_map(int unit
, int newidx
, int user
)
636 struct vc_data
*vc
= vc_cons
[unit
].d
;
637 int oldidx
= con2fb_map
[unit
];
638 struct fb_info
*info
= registered_fb
[newidx
];
639 struct fb_info
*oldinfo
= NULL
;
642 if (oldidx
== newidx
)
648 if (!err
&& !search_for_mapped_con()) {
650 return fbcon_takeover(0);
654 oldinfo
= registered_fb
[oldidx
];
656 found
= search_fb_in_map(newidx
);
658 acquire_console_sem();
659 con2fb_map
[unit
] = newidx
;
661 err
= con2fb_acquire_newinfo(vc
, info
, unit
, oldidx
);
665 * If old fb is not mapped to any of the consoles,
666 * fbcon should release it.
668 if (!err
&& oldinfo
&& !search_fb_in_map(oldidx
))
669 err
= con2fb_release_oldinfo(vc
, oldinfo
, info
, unit
, oldidx
,
673 int show_logo
= (fg_console
== 0 && !user
&&
674 logo_shown
!= FBCON_LOGO_DONTSHOW
);
677 con2fb_init_newinfo(info
);
678 con2fb_map_boot
[unit
] = newidx
;
679 con2fb_init_display(vc
, info
, unit
, show_logo
);
682 release_console_sem();
687 * Low Level Operations
689 /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
690 static int var_to_display(struct display
*disp
,
691 struct fb_var_screeninfo
*var
,
692 struct fb_info
*info
)
694 disp
->xres_virtual
= var
->xres_virtual
;
695 disp
->yres_virtual
= var
->yres_virtual
;
696 disp
->bits_per_pixel
= var
->bits_per_pixel
;
697 disp
->grayscale
= var
->grayscale
;
698 disp
->nonstd
= var
->nonstd
;
699 disp
->accel_flags
= var
->accel_flags
;
700 disp
->height
= var
->height
;
701 disp
->width
= var
->width
;
702 disp
->red
= var
->red
;
703 disp
->green
= var
->green
;
704 disp
->blue
= var
->blue
;
705 disp
->transp
= var
->transp
;
706 disp
->rotate
= var
->rotate
;
707 disp
->mode
= fb_match_mode(var
, &info
->modelist
);
708 if (disp
->mode
== NULL
)
709 /* This should not happen */
714 static void display_to_var(struct fb_var_screeninfo
*var
,
715 struct display
*disp
)
717 fb_videomode_to_var(var
, disp
->mode
);
718 var
->xres_virtual
= disp
->xres_virtual
;
719 var
->yres_virtual
= disp
->yres_virtual
;
720 var
->bits_per_pixel
= disp
->bits_per_pixel
;
721 var
->grayscale
= disp
->grayscale
;
722 var
->nonstd
= disp
->nonstd
;
723 var
->accel_flags
= disp
->accel_flags
;
724 var
->height
= disp
->height
;
725 var
->width
= disp
->width
;
726 var
->red
= disp
->red
;
727 var
->green
= disp
->green
;
728 var
->blue
= disp
->blue
;
729 var
->transp
= disp
->transp
;
730 var
->rotate
= disp
->rotate
;
733 static const char *fbcon_startup(void)
735 const char *display_desc
= "frame buffer device";
736 struct display
*p
= &fb_display
[fg_console
];
737 struct vc_data
*vc
= vc_cons
[fg_console
].d
;
738 struct font_desc
*font
= NULL
;
739 struct module
*owner
;
740 struct fb_info
*info
= NULL
;
741 struct fbcon_ops
*ops
;
747 * If num_registered_fb is zero, this is a call for the dummy part.
748 * The frame buffer devices weren't initialized yet.
750 if (!num_registered_fb
|| info_idx
== -1)
753 * Instead of blindly using registered_fb[0], we use info_idx, set by
756 info
= registered_fb
[info_idx
];
760 owner
= info
->fbops
->owner
;
761 if (!try_module_get(owner
))
763 if (info
->fbops
->fb_open
&& info
->fbops
->fb_open(info
, 0)) {
768 ops
= kmalloc(sizeof(struct fbcon_ops
), GFP_KERNEL
);
774 memset(ops
, 0, sizeof(struct fbcon_ops
));
777 info
->fbcon_par
= ops
;
778 set_blitting_type(vc
, info
, NULL
);
780 if (info
->fix
.type
!= FB_TYPE_TEXT
) {
781 if (fbcon_softback_size
) {
785 kmalloc(fbcon_softback_size
,
788 fbcon_softback_size
= 0;
794 kfree((void *) softback_buf
);
800 softback_in
= softback_top
= softback_curr
=
805 /* Setup default font */
807 if (!fontname
[0] || !(font
= find_font(fontname
)))
808 font
= get_default_font(info
->var
.xres
,
810 vc
->vc_font
.width
= font
->width
;
811 vc
->vc_font
.height
= font
->height
;
812 vc
->vc_font
.data
= p
->fontdata
= font
->data
;
813 vc
->vc_font
.charcount
= 256; /* FIXME Need to support more fonts */
816 cols
= info
->var
.xres
/ vc
->vc_font
.width
;
817 rows
= info
->var
.yres
/ vc
->vc_font
.height
;
818 vc_resize(vc
, cols
, rows
);
820 DPRINTK("mode: %s\n", info
->fix
.id
);
821 DPRINTK("visual: %d\n", info
->fix
.visual
);
822 DPRINTK("res: %dx%d-%d\n", info
->var
.xres
,
824 info
->var
.bits_per_pixel
);
828 cursor_blink_rate
= ATARI_CURSOR_BLINK_RATE
;
830 request_irq(IRQ_AUTO_4
, fb_vbl_handler
,
831 IRQ_TYPE_PRIO
, "framebuffer vbl",
834 #endif /* CONFIG_ATARI */
838 * On a Macintoy, the VBL interrupt may or may not be active.
839 * As interrupt based cursor is more reliable and race free, we
840 * probe for VBL interrupts.
845 * Probe for VBL: set temp. handler ...
847 irqres
= request_irq(IRQ_MAC_VBL
, fb_vbl_detect
, 0,
848 "framebuffer vbl", info
);
852 * ... and spin for 20 ms ...
854 while (!vbl_detected
&& ++ct
< 1000)
859 ("fbcon_startup: No VBL detected, using timer based cursor.\n");
861 free_irq(IRQ_MAC_VBL
, fb_vbl_detect
);
865 * interrupt based cursor ok
867 cursor_blink_rate
= MAC_CURSOR_BLINK_RATE
;
869 request_irq(IRQ_MAC_VBL
, fb_vbl_handler
, 0,
870 "framebuffer vbl", info
);
873 * VBL not detected: fall through, use timer based cursor
878 #endif /* CONFIG_MAC */
880 /* Initialize the work queue. If the driver provides its
881 * own work queue this means it will use something besides
882 * default timer to flash the cursor. */
883 if (!info
->queue
.func
) {
884 INIT_WORK(&info
->queue
, fb_flashcursor
, info
);
886 init_timer(&ops
->cursor_timer
);
887 ops
->cursor_timer
.function
= cursor_timer_handler
;
888 ops
->cursor_timer
.expires
= jiffies
+ HZ
/ 5;
889 ops
->cursor_timer
.data
= (unsigned long ) info
;
890 add_timer(&ops
->cursor_timer
);
895 static void fbcon_init(struct vc_data
*vc
, int init
)
897 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
898 struct fbcon_ops
*ops
;
899 struct vc_data
**default_mode
= vc
->vc_display_fg
;
900 struct vc_data
*svc
= *default_mode
;
901 struct display
*t
, *p
= &fb_display
[vc
->vc_num
];
902 int logo
= 1, new_rows
, new_cols
, rows
, cols
, charcnt
= 256;
905 if (info_idx
== -1 || info
== NULL
)
910 if (vc
!= svc
|| logo_shown
== FBCON_LOGO_DONTSHOW
||
911 (info
->fix
.type
== FB_TYPE_TEXT
))
914 info
->var
.xoffset
= info
->var
.yoffset
= p
->yscroll
= 0; /* reset wrap/pan */
916 if (var_to_display(p
, &info
->var
, info
))
919 /* If we are not the first console on this
920 fb, copy the font from that console */
921 t
= &fb_display
[svc
->vc_num
];
922 if (!vc
->vc_font
.data
) {
923 vc
->vc_font
.data
= p
->fontdata
= t
->fontdata
;
924 vc
->vc_font
.width
= (*default_mode
)->vc_font
.width
;
925 vc
->vc_font
.height
= (*default_mode
)->vc_font
.height
;
926 p
->userfont
= t
->userfont
;
928 REFCOUNT(p
->fontdata
)++;
931 charcnt
= FNTCHARCNT(p
->fontdata
);
932 vc
->vc_can_do_color
= (fb_get_color_depth(&info
->var
) != 1);
933 vc
->vc_complement_mask
= vc
->vc_can_do_color
? 0x7700 : 0x0800;
934 if (charcnt
== 256) {
935 vc
->vc_hi_font_mask
= 0;
937 vc
->vc_hi_font_mask
= 0x100;
938 if (vc
->vc_can_do_color
)
939 vc
->vc_complement_mask
<<= 1;
942 if (!*svc
->vc_uni_pagedir_loc
)
943 con_set_default_unimap(svc
);
944 if (!*vc
->vc_uni_pagedir_loc
)
945 con_copy_unimap(vc
, svc
);
949 new_cols
= info
->var
.xres
/ vc
->vc_font
.width
;
950 new_rows
= info
->var
.yres
/ vc
->vc_font
.height
;
951 vc_resize(vc
, new_cols
, new_rows
);
953 ops
= info
->fbcon_par
;
955 * We must always set the mode. The mode of the previous console
956 * driver could be in the same resolution but we are using different
957 * hardware so we have to initialize the hardware.
959 * We need to do it in fbcon_init() to prevent screen corruption.
961 if (CON_IS_VISIBLE(vc
)) {
962 if (info
->fbops
->fb_set_par
&&
963 !(ops
->flags
& FBCON_FLAGS_INIT
))
964 info
->fbops
->fb_set_par(info
);
965 ops
->flags
|= FBCON_FLAGS_INIT
;
970 if ((cap
& FBINFO_HWACCEL_COPYAREA
) &&
971 !(cap
& FBINFO_HWACCEL_DISABLED
))
972 p
->scrollmode
= SCROLL_MOVE
;
973 else /* default to something safe */
974 p
->scrollmode
= SCROLL_REDRAW
;
977 * ++guenther: console.c:vc_allocate() relies on initializing
978 * vc_{cols,rows}, but we must not set those if we are only
979 * resizing the console.
982 vc
->vc_cols
= new_cols
;
983 vc
->vc_rows
= new_rows
;
987 fbcon_prepare_logo(vc
, info
, cols
, rows
, new_cols
, new_rows
);
989 if (vc
== svc
&& softback_buf
) {
990 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
992 softback_end
= softback_buf
+ l
* vc
->vc_size_row
;
994 /* Smaller scrollback makes no sense, and 0 would screw
995 the operation totally */
1001 static void fbcon_deinit(struct vc_data
*vc
)
1003 struct display
*p
= &fb_display
[vc
->vc_num
];
1010 /* ====================================================================== */
1012 /* fbcon_XXX routines - interface used by the world
1014 * This system is now divided into two levels because of complications
1015 * caused by hardware scrolling. Top level functions:
1017 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1019 * handles y values in range [0, scr_height-1] that correspond to real
1020 * screen positions. y_wrap shift means that first line of bitmap may be
1021 * anywhere on this display. These functions convert lineoffsets to
1022 * bitmap offsets and deal with the wrap-around case by splitting blits.
1024 * fbcon_bmove_physical_8() -- These functions fast implementations
1025 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1026 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1030 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1031 * Implies should only really hardware scroll in rows. Only reason for
1032 * restriction is simplicity & efficiency at the moment.
1035 static __inline__
int real_y(struct display
*p
, int ypos
)
1037 int rows
= p
->vrows
;
1040 return ypos
< rows
? ypos
: ypos
- rows
;
1044 static void fbcon_clear(struct vc_data
*vc
, int sy
, int sx
, int height
,
1047 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1048 struct fbcon_ops
*ops
= info
->fbcon_par
;
1050 struct display
*p
= &fb_display
[vc
->vc_num
];
1053 if (fbcon_is_inactive(vc
, info
))
1056 if (!height
|| !width
)
1059 /* Split blits that cross physical y_wrap boundary */
1061 y_break
= p
->vrows
- p
->yscroll
;
1062 if (sy
< y_break
&& sy
+ height
- 1 >= y_break
) {
1063 u_int b
= y_break
- sy
;
1064 ops
->clear(vc
, info
, real_y(p
, sy
), sx
, b
, width
);
1065 ops
->clear(vc
, info
, real_y(p
, sy
+ b
), sx
, height
- b
,
1068 ops
->clear(vc
, info
, real_y(p
, sy
), sx
, height
, width
);
1071 static void fbcon_putcs(struct vc_data
*vc
, const unsigned short *s
,
1072 int count
, int ypos
, int xpos
)
1074 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1075 struct display
*p
= &fb_display
[vc
->vc_num
];
1076 struct fbcon_ops
*ops
= info
->fbcon_par
;
1078 if (!fbcon_is_inactive(vc
, info
))
1079 ops
->putcs(vc
, info
, s
, count
, real_y(p
, ypos
), xpos
,
1080 get_color(vc
, info
, scr_readw(s
), 1),
1081 get_color(vc
, info
, scr_readw(s
), 0));
1084 static void fbcon_putc(struct vc_data
*vc
, int c
, int ypos
, int xpos
)
1088 scr_writew(c
, &chr
);
1089 fbcon_putcs(vc
, &chr
, 1, ypos
, xpos
);
1092 static void fbcon_clear_margins(struct vc_data
*vc
, int bottom_only
)
1094 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1095 struct fbcon_ops
*ops
= info
->fbcon_par
;
1097 if (!fbcon_is_inactive(vc
, info
))
1098 ops
->clear_margins(vc
, info
, bottom_only
);
1101 static void fbcon_cursor(struct vc_data
*vc
, int mode
)
1103 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1104 struct fbcon_ops
*ops
= info
->fbcon_par
;
1105 struct display
*p
= &fb_display
[vc
->vc_num
];
1107 int c
= scr_readw((u16
*) vc
->vc_pos
);
1109 if (fbcon_is_inactive(vc
, info
))
1112 ops
->cursor_flash
= (mode
== CM_ERASE
) ? 0 : 1;
1113 if (mode
& CM_SOFTBACK
) {
1114 mode
&= ~CM_SOFTBACK
;
1118 fbcon_set_origin(vc
);
1122 ops
->cursor(vc
, info
, p
, mode
, y
, get_color(vc
, info
, c
, 1),
1123 get_color(vc
, info
, c
, 0));
1124 vbl_cursor_cnt
= CURSOR_DRAW_DELAY
;
1127 static int scrollback_phys_max
= 0;
1128 static int scrollback_max
= 0;
1129 static int scrollback_current
= 0;
1131 static int update_var(int con
, struct fb_info
*info
)
1133 if (con
== ((struct fbcon_ops
*)info
->fbcon_par
)->currcon
)
1134 return fb_pan_display(info
, &info
->var
);
1139 * If no vc is existent yet, just set struct display
1141 static void fbcon_preset_disp(struct fb_info
*info
, struct fb_var_screeninfo
*var
,
1144 struct display
*p
= &fb_display
[unit
];
1145 struct display
*t
= &fb_display
[fg_console
];
1147 var
->xoffset
= var
->yoffset
= p
->yscroll
= 0;
1148 if (var_to_display(p
, var
, info
))
1151 p
->fontdata
= t
->fontdata
;
1152 p
->userfont
= t
->userfont
;
1154 REFCOUNT(p
->fontdata
)++;
1157 static void fbcon_set_disp(struct fb_info
*info
, struct fb_var_screeninfo
*var
,
1160 struct display
*p
= &fb_display
[vc
->vc_num
], *t
;
1161 struct vc_data
**default_mode
= vc
->vc_display_fg
;
1162 struct vc_data
*svc
= *default_mode
;
1163 int rows
, cols
, charcnt
= 256;
1165 var
->xoffset
= var
->yoffset
= p
->yscroll
= 0;
1166 if (var_to_display(p
, var
, info
))
1168 t
= &fb_display
[svc
->vc_num
];
1169 if (!vc
->vc_font
.data
) {
1170 vc
->vc_font
.data
= p
->fontdata
= t
->fontdata
;
1171 vc
->vc_font
.width
= (*default_mode
)->vc_font
.width
;
1172 vc
->vc_font
.height
= (*default_mode
)->vc_font
.height
;
1173 p
->userfont
= t
->userfont
;
1175 REFCOUNT(p
->fontdata
)++;
1178 charcnt
= FNTCHARCNT(p
->fontdata
);
1180 vc
->vc_can_do_color
= (fb_get_color_depth(var
) != 1);
1181 vc
->vc_complement_mask
= vc
->vc_can_do_color
? 0x7700 : 0x0800;
1182 if (charcnt
== 256) {
1183 vc
->vc_hi_font_mask
= 0;
1185 vc
->vc_hi_font_mask
= 0x100;
1186 if (vc
->vc_can_do_color
)
1187 vc
->vc_complement_mask
<<= 1;
1190 if (!*svc
->vc_uni_pagedir_loc
)
1191 con_set_default_unimap(svc
);
1192 if (!*vc
->vc_uni_pagedir_loc
)
1193 con_copy_unimap(vc
, svc
);
1195 cols
= var
->xres
/ vc
->vc_font
.width
;
1196 rows
= var
->yres
/ vc
->vc_font
.height
;
1197 vc_resize(vc
, cols
, rows
);
1198 if (CON_IS_VISIBLE(vc
)) {
1201 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
1204 softback_end
= softback_buf
+ l
*
1207 /* Smaller scrollback makes no sense, and 0
1208 would screw the operation totally */
1215 static __inline__
void ywrap_up(struct vc_data
*vc
, int count
)
1217 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1218 struct display
*p
= &fb_display
[vc
->vc_num
];
1220 p
->yscroll
+= count
;
1221 if (p
->yscroll
>= p
->vrows
) /* Deal with wrap */
1222 p
->yscroll
-= p
->vrows
;
1223 info
->var
.xoffset
= 0;
1224 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1225 info
->var
.vmode
|= FB_VMODE_YWRAP
;
1226 update_var(vc
->vc_num
, info
);
1227 scrollback_max
+= count
;
1228 if (scrollback_max
> scrollback_phys_max
)
1229 scrollback_max
= scrollback_phys_max
;
1230 scrollback_current
= 0;
1233 static __inline__
void ywrap_down(struct vc_data
*vc
, int count
)
1235 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1236 struct display
*p
= &fb_display
[vc
->vc_num
];
1238 p
->yscroll
-= count
;
1239 if (p
->yscroll
< 0) /* Deal with wrap */
1240 p
->yscroll
+= p
->vrows
;
1241 info
->var
.xoffset
= 0;
1242 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1243 info
->var
.vmode
|= FB_VMODE_YWRAP
;
1244 update_var(vc
->vc_num
, info
);
1245 scrollback_max
-= count
;
1246 if (scrollback_max
< 0)
1248 scrollback_current
= 0;
1251 static __inline__
void ypan_up(struct vc_data
*vc
, int count
)
1253 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1254 struct display
*p
= &fb_display
[vc
->vc_num
];
1255 struct fbcon_ops
*ops
= info
->fbcon_par
;
1257 p
->yscroll
+= count
;
1258 if (p
->yscroll
> p
->vrows
- vc
->vc_rows
) {
1259 ops
->bmove(vc
, info
, p
->vrows
- vc
->vc_rows
,
1260 0, 0, 0, vc
->vc_rows
, vc
->vc_cols
);
1261 p
->yscroll
-= p
->vrows
- vc
->vc_rows
;
1263 info
->var
.xoffset
= 0;
1264 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1265 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
1266 update_var(vc
->vc_num
, info
);
1267 fbcon_clear_margins(vc
, 1);
1268 scrollback_max
+= count
;
1269 if (scrollback_max
> scrollback_phys_max
)
1270 scrollback_max
= scrollback_phys_max
;
1271 scrollback_current
= 0;
1274 static __inline__
void ypan_up_redraw(struct vc_data
*vc
, int t
, int count
)
1276 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1277 struct display
*p
= &fb_display
[vc
->vc_num
];
1280 p
->yscroll
+= count
;
1281 if (p
->yscroll
> p
->vrows
- vc
->vc_rows
) {
1282 p
->yscroll
-= p
->vrows
- vc
->vc_rows
;
1286 info
->var
.xoffset
= 0;
1287 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1288 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
1290 fbcon_redraw_move(vc
, p
, t
+ count
, vc
->vc_rows
- count
, t
);
1291 update_var(vc
->vc_num
, info
);
1292 fbcon_clear_margins(vc
, 1);
1293 scrollback_max
+= count
;
1294 if (scrollback_max
> scrollback_phys_max
)
1295 scrollback_max
= scrollback_phys_max
;
1296 scrollback_current
= 0;
1299 static __inline__
void ypan_down(struct vc_data
*vc
, int count
)
1301 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1302 struct display
*p
= &fb_display
[vc
->vc_num
];
1303 struct fbcon_ops
*ops
= info
->fbcon_par
;
1305 p
->yscroll
-= count
;
1306 if (p
->yscroll
< 0) {
1307 ops
->bmove(vc
, info
, 0, 0, p
->vrows
- vc
->vc_rows
,
1308 0, vc
->vc_rows
, vc
->vc_cols
);
1309 p
->yscroll
+= p
->vrows
- vc
->vc_rows
;
1311 info
->var
.xoffset
= 0;
1312 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1313 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
1314 update_var(vc
->vc_num
, info
);
1315 fbcon_clear_margins(vc
, 1);
1316 scrollback_max
-= count
;
1317 if (scrollback_max
< 0)
1319 scrollback_current
= 0;
1322 static __inline__
void ypan_down_redraw(struct vc_data
*vc
, int t
, int count
)
1324 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1325 struct display
*p
= &fb_display
[vc
->vc_num
];
1328 p
->yscroll
-= count
;
1329 if (p
->yscroll
< 0) {
1330 p
->yscroll
+= p
->vrows
- vc
->vc_rows
;
1333 info
->var
.xoffset
= 0;
1334 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1335 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
1337 fbcon_redraw_move(vc
, p
, t
, vc
->vc_rows
- count
, t
+ count
);
1338 update_var(vc
->vc_num
, info
);
1339 fbcon_clear_margins(vc
, 1);
1340 scrollback_max
-= count
;
1341 if (scrollback_max
< 0)
1343 scrollback_current
= 0;
1346 static void fbcon_redraw_softback(struct vc_data
*vc
, struct display
*p
,
1349 int count
= vc
->vc_rows
;
1350 unsigned short *d
, *s
;
1354 d
= (u16
*) softback_curr
;
1355 if (d
== (u16
*) softback_in
)
1356 d
= (u16
*) vc
->vc_origin
;
1357 n
= softback_curr
+ delta
* vc
->vc_size_row
;
1358 softback_lines
-= delta
;
1360 if (softback_curr
< softback_top
&& n
< softback_buf
) {
1361 n
+= softback_end
- softback_buf
;
1362 if (n
< softback_top
) {
1364 (softback_top
- n
) / vc
->vc_size_row
;
1367 } else if (softback_curr
>= softback_top
1368 && n
< softback_top
) {
1370 (softback_top
- n
) / vc
->vc_size_row
;
1374 if (softback_curr
> softback_in
&& n
>= softback_end
) {
1375 n
+= softback_buf
- softback_end
;
1376 if (n
> softback_in
) {
1380 } else if (softback_curr
<= softback_in
&& n
> softback_in
) {
1385 if (n
== softback_curr
)
1388 s
= (u16
*) softback_curr
;
1389 if (s
== (u16
*) softback_in
)
1390 s
= (u16
*) vc
->vc_origin
;
1392 unsigned short *start
;
1396 unsigned short attr
= 1;
1399 le
= advance_row(s
, 1);
1402 if (attr
!= (c
& 0xff00)) {
1405 fbcon_putcs(vc
, start
, s
- start
,
1411 if (c
== scr_readw(d
)) {
1413 fbcon_putcs(vc
, start
, s
- start
,
1426 fbcon_putcs(vc
, start
, s
- start
, line
, x
);
1428 if (d
== (u16
*) softback_end
)
1429 d
= (u16
*) softback_buf
;
1430 if (d
== (u16
*) softback_in
)
1431 d
= (u16
*) vc
->vc_origin
;
1432 if (s
== (u16
*) softback_end
)
1433 s
= (u16
*) softback_buf
;
1434 if (s
== (u16
*) softback_in
)
1435 s
= (u16
*) vc
->vc_origin
;
1439 static void fbcon_redraw_move(struct vc_data
*vc
, struct display
*p
,
1440 int line
, int count
, int dy
)
1442 unsigned short *s
= (unsigned short *)
1443 (vc
->vc_origin
+ vc
->vc_size_row
* line
);
1446 unsigned short *start
= s
;
1447 unsigned short *le
= advance_row(s
, 1);
1450 unsigned short attr
= 1;
1454 if (attr
!= (c
& 0xff00)) {
1457 fbcon_putcs(vc
, start
, s
- start
,
1463 console_conditional_schedule();
1467 fbcon_putcs(vc
, start
, s
- start
, dy
, x
);
1468 console_conditional_schedule();
1473 static void fbcon_redraw(struct vc_data
*vc
, struct display
*p
,
1474 int line
, int count
, int offset
)
1476 unsigned short *d
= (unsigned short *)
1477 (vc
->vc_origin
+ vc
->vc_size_row
* line
);
1478 unsigned short *s
= d
+ offset
;
1481 unsigned short *start
= s
;
1482 unsigned short *le
= advance_row(s
, 1);
1485 unsigned short attr
= 1;
1489 if (attr
!= (c
& 0xff00)) {
1492 fbcon_putcs(vc
, start
, s
- start
,
1498 if (c
== scr_readw(d
)) {
1500 fbcon_putcs(vc
, start
, s
- start
,
1510 console_conditional_schedule();
1515 fbcon_putcs(vc
, start
, s
- start
, line
, x
);
1516 console_conditional_schedule();
1521 /* NOTE: We subtract two lines from these pointers */
1522 s
-= vc
->vc_size_row
;
1523 d
-= vc
->vc_size_row
;
1528 static inline void fbcon_softback_note(struct vc_data
*vc
, int t
,
1533 if (vc
->vc_num
!= fg_console
)
1535 p
= (unsigned short *) (vc
->vc_origin
+ t
* vc
->vc_size_row
);
1538 scr_memcpyw((u16
*) softback_in
, p
, vc
->vc_size_row
);
1540 p
= advance_row(p
, 1);
1541 softback_in
+= vc
->vc_size_row
;
1542 if (softback_in
== softback_end
)
1543 softback_in
= softback_buf
;
1544 if (softback_in
== softback_top
) {
1545 softback_top
+= vc
->vc_size_row
;
1546 if (softback_top
== softback_end
)
1547 softback_top
= softback_buf
;
1550 softback_curr
= softback_in
;
1553 static int fbcon_scroll(struct vc_data
*vc
, int t
, int b
, int dir
,
1556 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1557 struct display
*p
= &fb_display
[vc
->vc_num
];
1558 struct fbcon_ops
*ops
= info
->fbcon_par
;
1559 int scroll_partial
= info
->flags
& FBINFO_PARTIAL_PAN_OK
;
1561 if (fbcon_is_inactive(vc
, info
))
1564 fbcon_cursor(vc
, CM_ERASE
);
1567 * ++Geert: Only use ywrap/ypan if the console is in text mode
1568 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1569 * whole screen (prevents flicker).
1574 if (count
> vc
->vc_rows
) /* Maximum realistic size */
1575 count
= vc
->vc_rows
;
1577 fbcon_softback_note(vc
, t
, count
);
1578 if (logo_shown
>= 0)
1580 switch (p
->scrollmode
) {
1582 ops
->bmove(vc
, info
, t
+ count
, 0, t
, 0,
1583 b
- t
- count
, vc
->vc_cols
);
1584 ops
->clear(vc
, info
, b
- count
, 0, count
,
1588 case SCROLL_WRAP_MOVE
:
1589 if (b
- t
- count
> 3 * vc
->vc_rows
>> 2) {
1591 fbcon_bmove(vc
, 0, 0, count
, 0, t
,
1593 ywrap_up(vc
, count
);
1594 if (vc
->vc_rows
- b
> 0)
1595 fbcon_bmove(vc
, b
- count
, 0, b
, 0,
1598 } else if (info
->flags
& FBINFO_READS_FAST
)
1599 fbcon_bmove(vc
, t
+ count
, 0, t
, 0,
1600 b
- t
- count
, vc
->vc_cols
);
1603 fbcon_clear(vc
, b
- count
, 0, count
, vc
->vc_cols
);
1606 case SCROLL_PAN_REDRAW
:
1607 if ((p
->yscroll
+ count
<=
1608 2 * (p
->vrows
- vc
->vc_rows
))
1609 && ((!scroll_partial
&& (b
- t
== vc
->vc_rows
))
1612 3 * vc
->vc_rows
>> 2)))) {
1614 fbcon_redraw_move(vc
, p
, 0, t
, count
);
1615 ypan_up_redraw(vc
, t
, count
);
1616 if (vc
->vc_rows
- b
> 0)
1617 fbcon_redraw_move(vc
, p
, b
- count
,
1618 vc
->vc_rows
- b
, b
);
1620 fbcon_redraw_move(vc
, p
, t
+ count
, b
- t
- count
, t
);
1621 fbcon_clear(vc
, b
- count
, 0, count
, vc
->vc_cols
);
1624 case SCROLL_PAN_MOVE
:
1625 if ((p
->yscroll
+ count
<=
1626 2 * (p
->vrows
- vc
->vc_rows
))
1627 && ((!scroll_partial
&& (b
- t
== vc
->vc_rows
))
1630 3 * vc
->vc_rows
>> 2)))) {
1632 fbcon_bmove(vc
, 0, 0, count
, 0, t
,
1635 if (vc
->vc_rows
- b
> 0)
1636 fbcon_bmove(vc
, b
- count
, 0, b
, 0,
1639 } else if (info
->flags
& FBINFO_READS_FAST
)
1640 fbcon_bmove(vc
, t
+ count
, 0, t
, 0,
1641 b
- t
- count
, vc
->vc_cols
);
1644 fbcon_clear(vc
, b
- count
, 0, count
, vc
->vc_cols
);
1649 fbcon_redraw(vc
, p
, t
, b
- t
- count
,
1650 count
* vc
->vc_cols
);
1651 fbcon_clear(vc
, b
- count
, 0, count
, vc
->vc_cols
);
1652 scr_memsetw((unsigned short *) (vc
->vc_origin
+
1655 vc
->vc_video_erase_char
,
1656 vc
->vc_size_row
* count
);
1662 if (count
> vc
->vc_rows
) /* Maximum realistic size */
1663 count
= vc
->vc_rows
;
1664 switch (p
->scrollmode
) {
1666 ops
->bmove(vc
, info
, t
, 0, t
+ count
, 0,
1667 b
- t
- count
, vc
->vc_cols
);
1668 ops
->clear(vc
, info
, t
, 0, count
, vc
->vc_cols
);
1671 case SCROLL_WRAP_MOVE
:
1672 if (b
- t
- count
> 3 * vc
->vc_rows
>> 2) {
1673 if (vc
->vc_rows
- b
> 0)
1674 fbcon_bmove(vc
, b
, 0, b
- count
, 0,
1677 ywrap_down(vc
, count
);
1679 fbcon_bmove(vc
, count
, 0, 0, 0, t
,
1681 } else if (info
->flags
& FBINFO_READS_FAST
)
1682 fbcon_bmove(vc
, t
, 0, t
+ count
, 0,
1683 b
- t
- count
, vc
->vc_cols
);
1686 fbcon_clear(vc
, t
, 0, count
, vc
->vc_cols
);
1689 case SCROLL_PAN_MOVE
:
1690 if ((count
- p
->yscroll
<= p
->vrows
- vc
->vc_rows
)
1691 && ((!scroll_partial
&& (b
- t
== vc
->vc_rows
))
1694 3 * vc
->vc_rows
>> 2)))) {
1695 if (vc
->vc_rows
- b
> 0)
1696 fbcon_bmove(vc
, b
, 0, b
- count
, 0,
1699 ypan_down(vc
, count
);
1701 fbcon_bmove(vc
, count
, 0, 0, 0, t
,
1703 } else if (info
->flags
& FBINFO_READS_FAST
)
1704 fbcon_bmove(vc
, t
, 0, t
+ count
, 0,
1705 b
- t
- count
, vc
->vc_cols
);
1708 fbcon_clear(vc
, t
, 0, count
, vc
->vc_cols
);
1711 case SCROLL_PAN_REDRAW
:
1712 if ((count
- p
->yscroll
<= p
->vrows
- vc
->vc_rows
)
1713 && ((!scroll_partial
&& (b
- t
== vc
->vc_rows
))
1716 3 * vc
->vc_rows
>> 2)))) {
1717 if (vc
->vc_rows
- b
> 0)
1718 fbcon_redraw_move(vc
, p
, b
, vc
->vc_rows
- b
,
1720 ypan_down_redraw(vc
, t
, count
);
1722 fbcon_redraw_move(vc
, p
, count
, t
, 0);
1724 fbcon_redraw_move(vc
, p
, t
, b
- t
- count
, t
+ count
);
1725 fbcon_clear(vc
, t
, 0, count
, vc
->vc_cols
);
1730 fbcon_redraw(vc
, p
, b
- 1, b
- t
- count
,
1731 -count
* vc
->vc_cols
);
1732 fbcon_clear(vc
, t
, 0, count
, vc
->vc_cols
);
1733 scr_memsetw((unsigned short *) (vc
->vc_origin
+
1736 vc
->vc_video_erase_char
,
1737 vc
->vc_size_row
* count
);
1745 static void fbcon_bmove(struct vc_data
*vc
, int sy
, int sx
, int dy
, int dx
,
1746 int height
, int width
)
1748 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1749 struct display
*p
= &fb_display
[vc
->vc_num
];
1751 if (fbcon_is_inactive(vc
, info
))
1754 if (!width
|| !height
)
1757 /* Split blits that cross physical y_wrap case.
1758 * Pathological case involves 4 blits, better to use recursive
1759 * code rather than unrolled case
1761 * Recursive invocations don't need to erase the cursor over and
1762 * over again, so we use fbcon_bmove_rec()
1764 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, height
, width
,
1765 p
->vrows
- p
->yscroll
);
1768 static void fbcon_bmove_rec(struct vc_data
*vc
, struct display
*p
, int sy
, int sx
,
1769 int dy
, int dx
, int height
, int width
, u_int y_break
)
1771 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1772 struct fbcon_ops
*ops
= info
->fbcon_par
;
1775 if (sy
< y_break
&& sy
+ height
> y_break
) {
1777 if (dy
< sy
) { /* Avoid trashing self */
1778 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, b
, width
,
1780 fbcon_bmove_rec(vc
, p
, sy
+ b
, sx
, dy
+ b
, dx
,
1781 height
- b
, width
, y_break
);
1783 fbcon_bmove_rec(vc
, p
, sy
+ b
, sx
, dy
+ b
, dx
,
1784 height
- b
, width
, y_break
);
1785 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, b
, width
,
1791 if (dy
< y_break
&& dy
+ height
> y_break
) {
1793 if (dy
< sy
) { /* Avoid trashing self */
1794 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, b
, width
,
1796 fbcon_bmove_rec(vc
, p
, sy
+ b
, sx
, dy
+ b
, dx
,
1797 height
- b
, width
, y_break
);
1799 fbcon_bmove_rec(vc
, p
, sy
+ b
, sx
, dy
+ b
, dx
,
1800 height
- b
, width
, y_break
);
1801 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, b
, width
,
1806 ops
->bmove(vc
, info
, real_y(p
, sy
), sx
, real_y(p
, dy
), dx
,
1810 static __inline__
void updatescrollmode(struct display
*p
, struct fb_info
*info
,
1813 int fh
= vc
->vc_font
.height
;
1814 int cap
= info
->flags
;
1815 int good_pan
= (cap
& FBINFO_HWACCEL_YPAN
)
1816 && divides(info
->fix
.ypanstep
, vc
->vc_font
.height
)
1817 && info
->var
.yres_virtual
> info
->var
.yres
;
1818 int good_wrap
= (cap
& FBINFO_HWACCEL_YWRAP
)
1819 && divides(info
->fix
.ywrapstep
, vc
->vc_font
.height
)
1820 && divides(vc
->vc_font
.height
, info
->var
.yres_virtual
);
1821 int reading_fast
= cap
& FBINFO_READS_FAST
;
1822 int fast_copyarea
= (cap
& FBINFO_HWACCEL_COPYAREA
) && !(cap
& FBINFO_HWACCEL_DISABLED
);
1823 int fast_imageblit
= (cap
& FBINFO_HWACCEL_IMAGEBLIT
) && !(cap
& FBINFO_HWACCEL_DISABLED
);
1825 p
->vrows
= info
->var
.yres_virtual
/fh
;
1826 if (info
->var
.yres
> (fh
* (vc
->vc_rows
+ 1)))
1827 p
->vrows
-= (info
->var
.yres
- (fh
* vc
->vc_rows
)) / fh
;
1828 if ((info
->var
.yres
% fh
) && (info
->var
.yres_virtual
% fh
<
1829 info
->var
.yres
% fh
))
1832 if (good_wrap
|| good_pan
) {
1833 if (reading_fast
|| fast_copyarea
)
1834 p
->scrollmode
= good_wrap
? SCROLL_WRAP_MOVE
: SCROLL_PAN_MOVE
;
1836 p
->scrollmode
= good_wrap
? SCROLL_REDRAW
:
1839 if (reading_fast
|| (fast_copyarea
&& !fast_imageblit
))
1840 p
->scrollmode
= SCROLL_MOVE
;
1842 p
->scrollmode
= SCROLL_REDRAW
;
1846 static int fbcon_resize(struct vc_data
*vc
, unsigned int width
,
1847 unsigned int height
)
1849 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1850 struct display
*p
= &fb_display
[vc
->vc_num
];
1851 struct fb_var_screeninfo var
= info
->var
;
1853 int fw
= vc
->vc_font
.width
;
1854 int fh
= vc
->vc_font
.height
;
1856 var
.xres
= width
* fw
;
1857 var
.yres
= height
* fh
;
1858 x_diff
= info
->var
.xres
- var
.xres
;
1859 y_diff
= info
->var
.yres
- var
.yres
;
1860 if (x_diff
< 0 || x_diff
> fw
|| (y_diff
< 0 || y_diff
> fh
)) {
1861 struct fb_videomode
*mode
;
1863 DPRINTK("attempting resize %ix%i\n", var
.xres
, var
.yres
);
1864 mode
= fb_find_best_mode(&var
, &info
->modelist
);
1867 fb_videomode_to_var(&var
, mode
);
1868 if (width
> var
.xres
/fw
|| height
> var
.yres
/fh
)
1871 * The following can probably have any value... Do we need to
1874 var
.bits_per_pixel
= p
->bits_per_pixel
;
1875 var
.xres_virtual
= p
->xres_virtual
;
1876 var
.yres_virtual
= p
->yres_virtual
;
1877 var
.accel_flags
= p
->accel_flags
;
1878 var
.width
= p
->width
;
1879 var
.height
= p
->height
;
1881 var
.green
= p
->green
;
1883 var
.transp
= p
->transp
;
1884 var
.nonstd
= p
->nonstd
;
1886 DPRINTK("resize now %ix%i\n", var
.xres
, var
.yres
);
1887 if (CON_IS_VISIBLE(vc
)) {
1888 var
.activate
= FB_ACTIVATE_NOW
|
1890 fb_set_var(info
, &var
);
1892 var_to_display(p
, &info
->var
, info
);
1894 updatescrollmode(p
, info
, vc
);
1898 static int fbcon_switch(struct vc_data
*vc
)
1900 struct fb_info
*info
;
1901 struct display
*p
= &fb_display
[vc
->vc_num
];
1902 struct fb_var_screeninfo var
;
1903 int i
, prev_console
;
1905 info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1908 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
1910 fbcon_set_origin(vc
);
1911 softback_top
= softback_curr
= softback_in
= softback_buf
;
1915 softback_end
= softback_buf
+ l
* vc
->vc_size_row
;
1917 /* Smaller scrollback makes no sense, and 0 would screw
1918 the operation totally */
1923 if (logo_shown
>= 0) {
1924 struct vc_data
*conp2
= vc_cons
[logo_shown
].d
;
1926 if (conp2
->vc_top
== logo_lines
1927 && conp2
->vc_bottom
== conp2
->vc_rows
)
1929 logo_shown
= FBCON_LOGO_CANSHOW
;
1932 prev_console
= ((struct fbcon_ops
*)info
->fbcon_par
)->currcon
;
1935 * FIXME: If we have multiple fbdev's loaded, we need to
1936 * update all info->currcon. Perhaps, we can place this
1937 * in a centralized structure, but this might break some
1940 * info->currcon = vc->vc_num;
1942 for (i
= 0; i
< FB_MAX
; i
++) {
1943 if (registered_fb
[i
] != NULL
&& registered_fb
[i
]->fbcon_par
) {
1944 struct fbcon_ops
*ops
= registered_fb
[i
]->fbcon_par
;
1946 ops
->currcon
= vc
->vc_num
;
1949 memset(&var
, 0, sizeof(struct fb_var_screeninfo
));
1950 display_to_var(&var
, p
);
1951 var
.activate
= FB_ACTIVATE_NOW
;
1954 * make sure we don't unnecessarily trip the memcmp()
1957 info
->var
.activate
= var
.activate
;
1958 info
->var
.yoffset
= info
->var
.xoffset
= p
->yscroll
= 0;
1959 fb_set_var(info
, &var
);
1961 if (prev_console
!= -1 &&
1962 registered_fb
[con2fb_map
[prev_console
]] != info
&&
1963 info
->fbops
->fb_set_par
)
1964 info
->fbops
->fb_set_par(info
);
1966 set_blitting_type(vc
, info
, p
);
1967 ((struct fbcon_ops
*)info
->fbcon_par
)->cursor_reset
= 1;
1969 vc
->vc_can_do_color
= (fb_get_color_depth(&info
->var
) != 1);
1970 vc
->vc_complement_mask
= vc
->vc_can_do_color
? 0x7700 : 0x0800;
1971 updatescrollmode(p
, info
, vc
);
1973 switch (p
->scrollmode
) {
1974 case SCROLL_WRAP_MOVE
:
1975 scrollback_phys_max
= p
->vrows
- vc
->vc_rows
;
1977 case SCROLL_PAN_MOVE
:
1978 case SCROLL_PAN_REDRAW
:
1979 scrollback_phys_max
= p
->vrows
- 2 * vc
->vc_rows
;
1980 if (scrollback_phys_max
< 0)
1981 scrollback_phys_max
= 0;
1984 scrollback_phys_max
= 0;
1988 scrollback_current
= 0;
1990 update_var(vc
->vc_num
, info
);
1991 fbcon_set_palette(vc
, color_table
);
1992 fbcon_clear_margins(vc
, 0);
1994 if (logo_shown
== FBCON_LOGO_DRAW
) {
1996 logo_shown
= fg_console
;
1997 /* This is protected above by initmem_freed */
2000 vc
->vc_origin
+ vc
->vc_size_row
* vc
->vc_top
,
2001 vc
->vc_size_row
* (vc
->vc_bottom
-
2008 static void fbcon_generic_blank(struct vc_data
*vc
, struct fb_info
*info
,
2012 unsigned short charmask
= vc
->vc_hi_font_mask
?
2014 unsigned short oldc
;
2016 oldc
= vc
->vc_video_erase_char
;
2017 vc
->vc_video_erase_char
&= charmask
;
2018 fbcon_clear(vc
, 0, 0, vc
->vc_rows
, vc
->vc_cols
);
2019 vc
->vc_video_erase_char
= oldc
;
2023 static int fbcon_blank(struct vc_data
*vc
, int blank
, int mode_switch
)
2025 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
2026 struct fbcon_ops
*ops
= info
->fbcon_par
;
2029 struct fb_var_screeninfo var
= info
->var
;
2034 var
.activate
= FB_ACTIVATE_NOW
| FB_ACTIVATE_FORCE
;
2035 fb_set_var(info
, &var
);
2040 if (!fbcon_is_inactive(vc
, info
)) {
2041 if (ops
->blank_state
!= blank
) {
2042 ops
->blank_state
= blank
;
2043 fbcon_cursor(vc
, blank
? CM_ERASE
: CM_DRAW
);
2044 ops
->cursor_flash
= (!blank
);
2046 if (fb_blank(info
, blank
))
2047 fbcon_generic_blank(vc
, info
, blank
);
2057 static void fbcon_free_font(struct display
*p
)
2059 if (p
->userfont
&& p
->fontdata
&& (--REFCOUNT(p
->fontdata
) == 0))
2060 kfree(p
->fontdata
- FONT_EXTRA_WORDS
* sizeof(int));
2065 static int fbcon_get_font(struct vc_data
*vc
, struct console_font
*font
)
2067 u8
*fontdata
= vc
->vc_font
.data
;
2068 u8
*data
= font
->data
;
2071 font
->width
= vc
->vc_font
.width
;
2072 font
->height
= vc
->vc_font
.height
;
2073 font
->charcount
= vc
->vc_hi_font_mask
? 512 : 256;
2077 if (font
->width
<= 8) {
2078 j
= vc
->vc_font
.height
;
2079 for (i
= 0; i
< font
->charcount
; i
++) {
2080 memcpy(data
, fontdata
, j
);
2081 memset(data
+ j
, 0, 32 - j
);
2085 } else if (font
->width
<= 16) {
2086 j
= vc
->vc_font
.height
* 2;
2087 for (i
= 0; i
< font
->charcount
; i
++) {
2088 memcpy(data
, fontdata
, j
);
2089 memset(data
+ j
, 0, 64 - j
);
2093 } else if (font
->width
<= 24) {
2094 for (i
= 0; i
< font
->charcount
; i
++) {
2095 for (j
= 0; j
< vc
->vc_font
.height
; j
++) {
2096 *data
++ = fontdata
[0];
2097 *data
++ = fontdata
[1];
2098 *data
++ = fontdata
[2];
2099 fontdata
+= sizeof(u32
);
2101 memset(data
, 0, 3 * (32 - j
));
2102 data
+= 3 * (32 - j
);
2105 j
= vc
->vc_font
.height
* 4;
2106 for (i
= 0; i
< font
->charcount
; i
++) {
2107 memcpy(data
, fontdata
, j
);
2108 memset(data
+ j
, 0, 128 - j
);
2116 static int fbcon_do_set_font(struct vc_data
*vc
, int w
, int h
,
2117 u8
* data
, int userfont
)
2119 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
2120 struct display
*p
= &fb_display
[vc
->vc_num
];
2123 char *old_data
= NULL
;
2125 if (CON_IS_VISIBLE(vc
) && softback_lines
)
2126 fbcon_set_origin(vc
);
2128 resize
= (w
!= vc
->vc_font
.width
) || (h
!= vc
->vc_font
.height
);
2130 old_data
= vc
->vc_font
.data
;
2132 cnt
= FNTCHARCNT(data
);
2135 vc
->vc_font
.data
= p
->fontdata
= data
;
2136 if ((p
->userfont
= userfont
))
2138 vc
->vc_font
.width
= w
;
2139 vc
->vc_font
.height
= h
;
2140 if (vc
->vc_hi_font_mask
&& cnt
== 256) {
2141 vc
->vc_hi_font_mask
= 0;
2142 if (vc
->vc_can_do_color
) {
2143 vc
->vc_complement_mask
>>= 1;
2144 vc
->vc_s_complement_mask
>>= 1;
2147 /* ++Edmund: reorder the attribute bits */
2148 if (vc
->vc_can_do_color
) {
2149 unsigned short *cp
=
2150 (unsigned short *) vc
->vc_origin
;
2151 int count
= vc
->vc_screenbuf_size
/ 2;
2153 for (; count
> 0; count
--, cp
++) {
2155 scr_writew(((c
& 0xfe00) >> 1) |
2158 c
= vc
->vc_video_erase_char
;
2159 vc
->vc_video_erase_char
=
2160 ((c
& 0xfe00) >> 1) | (c
& 0xff);
2163 } else if (!vc
->vc_hi_font_mask
&& cnt
== 512) {
2164 vc
->vc_hi_font_mask
= 0x100;
2165 if (vc
->vc_can_do_color
) {
2166 vc
->vc_complement_mask
<<= 1;
2167 vc
->vc_s_complement_mask
<<= 1;
2170 /* ++Edmund: reorder the attribute bits */
2172 unsigned short *cp
=
2173 (unsigned short *) vc
->vc_origin
;
2174 int count
= vc
->vc_screenbuf_size
/ 2;
2176 for (; count
> 0; count
--, cp
++) {
2177 unsigned short newc
;
2179 if (vc
->vc_can_do_color
)
2181 ((c
& 0xff00) << 1) | (c
&
2185 scr_writew(newc
, cp
);
2187 c
= vc
->vc_video_erase_char
;
2188 if (vc
->vc_can_do_color
) {
2189 vc
->vc_video_erase_char
=
2190 ((c
& 0xff00) << 1) | (c
& 0xff);
2193 vc
->vc_video_erase_char
= c
& ~0x100;
2199 /* reset wrap/pan */
2200 info
->var
.xoffset
= info
->var
.yoffset
= p
->yscroll
= 0;
2201 vc_resize(vc
, info
->var
.xres
/ w
, info
->var
.yres
/ h
);
2202 if (CON_IS_VISIBLE(vc
) && softback_buf
) {
2203 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
2206 softback_buf
+ l
* vc
->vc_size_row
;
2208 /* Smaller scrollback makes no sense, and 0 would screw
2209 the operation totally */
2213 } else if (CON_IS_VISIBLE(vc
)
2214 && vc
->vc_mode
== KD_TEXT
) {
2215 fbcon_clear_margins(vc
, 0);
2219 if (old_data
&& (--REFCOUNT(old_data
) == 0))
2220 kfree(old_data
- FONT_EXTRA_WORDS
* sizeof(int));
2224 static int fbcon_copy_font(struct vc_data
*vc
, int con
)
2226 struct display
*od
= &fb_display
[con
];
2227 struct console_font
*f
= &vc
->vc_font
;
2229 if (od
->fontdata
== f
->data
)
2230 return 0; /* already the same font... */
2231 return fbcon_do_set_font(vc
, f
->width
, f
->height
, od
->fontdata
, od
->userfont
);
2235 * User asked to set font; we are guaranteed that
2236 * a) width and height are in range 1..32
2237 * b) charcount does not exceed 512
2238 * but lets not assume that, since someone might someday want to use larger
2239 * fonts. And charcount of 512 is small for unicode support.
2241 * However, user space gives the font in 32 rows , regardless of
2242 * actual font height. So a new API is needed if support for larger fonts
2243 * is ever implemented.
2246 static int fbcon_set_font(struct vc_data
*vc
, struct console_font
*font
, unsigned flags
)
2248 unsigned charcount
= font
->charcount
;
2249 int w
= font
->width
;
2250 int h
= font
->height
;
2253 u8
*new_data
, *data
= font
->data
;
2254 int pitch
= (font
->width
+7) >> 3;
2256 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2257 * If not this check should be changed to charcount < 256 */
2258 if (charcount
!= 256 && charcount
!= 512)
2261 size
= h
* pitch
* charcount
;
2263 new_data
= kmalloc(FONT_EXTRA_WORDS
* sizeof(int) + size
, GFP_USER
);
2268 new_data
+= FONT_EXTRA_WORDS
* sizeof(int);
2269 FNTSIZE(new_data
) = size
;
2270 FNTCHARCNT(new_data
) = charcount
;
2271 REFCOUNT(new_data
) = 0; /* usage counter */
2272 for (i
=0; i
< charcount
; i
++) {
2273 memcpy(new_data
+ i
*h
*pitch
, data
+ i
*32*pitch
, h
*pitch
);
2276 /* Since linux has a nice crc32 function use it for counting font
2278 csum
= crc32(0, new_data
, size
);
2280 FNTSUM(new_data
) = csum
;
2281 /* Check if the same font is on some other console already */
2282 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
2283 struct vc_data
*tmp
= vc_cons
[i
].d
;
2285 if (fb_display
[i
].userfont
&&
2286 fb_display
[i
].fontdata
&&
2287 FNTSUM(fb_display
[i
].fontdata
) == csum
&&
2288 FNTSIZE(fb_display
[i
].fontdata
) == size
&&
2289 tmp
->vc_font
.width
== w
&&
2290 !memcmp(fb_display
[i
].fontdata
, new_data
, size
)) {
2291 kfree(new_data
- FONT_EXTRA_WORDS
* sizeof(int));
2292 new_data
= fb_display
[i
].fontdata
;
2296 return fbcon_do_set_font(vc
, font
->width
, font
->height
, new_data
, 1);
2299 static int fbcon_set_def_font(struct vc_data
*vc
, struct console_font
*font
, char *name
)
2301 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
2302 struct font_desc
*f
;
2305 f
= get_default_font(info
->var
.xres
, info
->var
.yres
);
2306 else if (!(f
= find_font(name
)))
2309 font
->width
= f
->width
;
2310 font
->height
= f
->height
;
2311 return fbcon_do_set_font(vc
, f
->width
, f
->height
, f
->data
, 0);
2314 static u16 palette_red
[16];
2315 static u16 palette_green
[16];
2316 static u16 palette_blue
[16];
2318 static struct fb_cmap palette_cmap
= {
2319 0, 16, palette_red
, palette_green
, palette_blue
, NULL
2322 static int fbcon_set_palette(struct vc_data
*vc
, unsigned char *table
)
2324 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
2328 if (fbcon_is_inactive(vc
, info
))
2331 if (!CON_IS_VISIBLE(vc
))
2334 depth
= fb_get_color_depth(&info
->var
);
2336 for (i
= j
= 0; i
< 16; i
++) {
2338 val
= vc
->vc_palette
[j
++];
2339 palette_red
[k
] = (val
<< 8) | val
;
2340 val
= vc
->vc_palette
[j
++];
2341 palette_green
[k
] = (val
<< 8) | val
;
2342 val
= vc
->vc_palette
[j
++];
2343 palette_blue
[k
] = (val
<< 8) | val
;
2345 palette_cmap
.len
= 16;
2346 palette_cmap
.start
= 0;
2348 * If framebuffer is capable of less than 16 colors,
2349 * use default palette of fbcon.
2352 fb_copy_cmap(fb_default_cmap(1 << depth
), &palette_cmap
);
2354 return fb_set_cmap(&palette_cmap
, info
);
2357 static u16
*fbcon_screen_pos(struct vc_data
*vc
, int offset
)
2362 if (vc
->vc_num
!= fg_console
|| !softback_lines
)
2363 return (u16
*) (vc
->vc_origin
+ offset
);
2364 line
= offset
/ vc
->vc_size_row
;
2365 if (line
>= softback_lines
)
2366 return (u16
*) (vc
->vc_origin
+ offset
-
2367 softback_lines
* vc
->vc_size_row
);
2368 p
= softback_curr
+ offset
;
2369 if (p
>= softback_end
)
2370 p
+= softback_buf
- softback_end
;
2374 static unsigned long fbcon_getxy(struct vc_data
*vc
, unsigned long pos
,
2380 if (pos
>= vc
->vc_origin
&& pos
< vc
->vc_scr_end
) {
2381 unsigned long offset
= (pos
- vc
->vc_origin
) / 2;
2383 x
= offset
% vc
->vc_cols
;
2384 y
= offset
/ vc
->vc_cols
;
2385 if (vc
->vc_num
== fg_console
)
2386 y
+= softback_lines
;
2387 ret
= pos
+ (vc
->vc_cols
- x
) * 2;
2388 } else if (vc
->vc_num
== fg_console
&& softback_lines
) {
2389 unsigned long offset
= pos
- softback_curr
;
2391 if (pos
< softback_curr
)
2392 offset
+= softback_end
- softback_buf
;
2394 x
= offset
% vc
->vc_cols
;
2395 y
= offset
/ vc
->vc_cols
;
2396 ret
= pos
+ (vc
->vc_cols
- x
) * 2;
2397 if (ret
== softback_end
)
2399 if (ret
== softback_in
)
2400 ret
= vc
->vc_origin
;
2402 /* Should not happen */
2404 ret
= vc
->vc_origin
;
2413 /* As we might be inside of softback, we may work with non-contiguous buffer,
2414 that's why we have to use a separate routine. */
2415 static void fbcon_invert_region(struct vc_data
*vc
, u16
* p
, int cnt
)
2418 u16 a
= scr_readw(p
);
2419 if (!vc
->vc_can_do_color
)
2421 else if (vc
->vc_hi_font_mask
== 0x100)
2422 a
= ((a
) & 0x11ff) | (((a
) & 0xe000) >> 4) |
2423 (((a
) & 0x0e00) << 4);
2425 a
= ((a
) & 0x88ff) | (((a
) & 0x7000) >> 4) |
2426 (((a
) & 0x0700) << 4);
2428 if (p
== (u16
*) softback_end
)
2429 p
= (u16
*) softback_buf
;
2430 if (p
== (u16
*) softback_in
)
2431 p
= (u16
*) vc
->vc_origin
;
2435 static int fbcon_scrolldelta(struct vc_data
*vc
, int lines
)
2437 struct fb_info
*info
= registered_fb
[con2fb_map
[fg_console
]];
2438 struct display
*p
= &fb_display
[fg_console
];
2439 int offset
, limit
, scrollback_old
;
2442 if (vc
->vc_num
!= fg_console
)
2444 if (vc
->vc_mode
!= KD_TEXT
|| !lines
)
2446 if (logo_shown
>= 0) {
2447 struct vc_data
*conp2
= vc_cons
[logo_shown
].d
;
2449 if (conp2
->vc_top
== logo_lines
2450 && conp2
->vc_bottom
== conp2
->vc_rows
)
2452 if (logo_shown
== vc
->vc_num
) {
2458 logo_lines
* vc
->vc_size_row
;
2459 for (i
= 0; i
< logo_lines
; i
++) {
2460 if (p
== softback_top
)
2462 if (p
== softback_buf
)
2464 p
-= vc
->vc_size_row
;
2465 q
-= vc
->vc_size_row
;
2466 scr_memcpyw((u16
*) q
, (u16
*) p
,
2470 update_region(vc
, vc
->vc_origin
,
2471 logo_lines
* vc
->vc_cols
);
2473 logo_shown
= FBCON_LOGO_CANSHOW
;
2475 fbcon_cursor(vc
, CM_ERASE
| CM_SOFTBACK
);
2476 fbcon_redraw_softback(vc
, p
, lines
);
2477 fbcon_cursor(vc
, CM_DRAW
| CM_SOFTBACK
);
2481 if (!scrollback_phys_max
)
2484 scrollback_old
= scrollback_current
;
2485 scrollback_current
-= lines
;
2486 if (scrollback_current
< 0)
2487 scrollback_current
= 0;
2488 else if (scrollback_current
> scrollback_max
)
2489 scrollback_current
= scrollback_max
;
2490 if (scrollback_current
== scrollback_old
)
2493 if (fbcon_is_inactive(vc
, info
))
2496 fbcon_cursor(vc
, CM_ERASE
);
2498 offset
= p
->yscroll
- scrollback_current
;
2500 switch (p
->scrollmode
) {
2501 case SCROLL_WRAP_MOVE
:
2502 info
->var
.vmode
|= FB_VMODE_YWRAP
;
2504 case SCROLL_PAN_MOVE
:
2505 case SCROLL_PAN_REDRAW
:
2506 limit
-= vc
->vc_rows
;
2507 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
2512 else if (offset
>= limit
)
2514 info
->var
.xoffset
= 0;
2515 info
->var
.yoffset
= offset
* vc
->vc_font
.height
;
2516 update_var(vc
->vc_num
, info
);
2517 if (!scrollback_current
)
2518 fbcon_cursor(vc
, CM_DRAW
);
2522 static int fbcon_set_origin(struct vc_data
*vc
)
2525 fbcon_scrolldelta(vc
, softback_lines
);
2529 static void fbcon_suspended(struct fb_info
*info
)
2531 struct vc_data
*vc
= NULL
;
2532 struct fbcon_ops
*ops
= info
->fbcon_par
;
2534 if (!ops
|| ops
->currcon
< 0)
2536 vc
= vc_cons
[ops
->currcon
].d
;
2538 /* Clear cursor, restore saved data */
2539 fbcon_cursor(vc
, CM_ERASE
);
2542 static void fbcon_resumed(struct fb_info
*info
)
2545 struct fbcon_ops
*ops
= info
->fbcon_par
;
2547 if (!ops
|| ops
->currcon
< 0)
2549 vc
= vc_cons
[ops
->currcon
].d
;
2554 static void fbcon_modechanged(struct fb_info
*info
)
2556 struct fbcon_ops
*ops
= info
->fbcon_par
;
2561 if (!ops
|| ops
->currcon
< 0)
2563 vc
= vc_cons
[ops
->currcon
].d
;
2564 if (vc
->vc_mode
!= KD_TEXT
|| registered_fb
[con2fb_map
[ops
->currcon
]] != info
)
2567 p
= &fb_display
[vc
->vc_num
];
2569 info
->var
.xoffset
= info
->var
.yoffset
= p
->yscroll
= 0;
2571 if (CON_IS_VISIBLE(vc
)) {
2572 var_to_display(p
, &info
->var
, info
);
2573 cols
= info
->var
.xres
/ vc
->vc_font
.width
;
2574 rows
= info
->var
.yres
/ vc
->vc_font
.height
;
2575 vc_resize(vc
, cols
, rows
);
2576 updatescrollmode(p
, info
, vc
);
2578 scrollback_current
= 0;
2579 update_var(vc
->vc_num
, info
);
2580 fbcon_set_palette(vc
, color_table
);
2583 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
2585 softback_end
= softback_buf
+ l
* vc
->vc_size_row
;
2587 /* Smaller scrollback makes no sense, and 0
2588 would screw the operation totally */
2595 static int fbcon_mode_deleted(struct fb_info
*info
,
2596 struct fb_videomode
*mode
)
2598 struct fb_info
*fb_info
;
2600 int i
, j
, found
= 0;
2602 /* before deletion, ensure that mode is not in use */
2603 for (i
= first_fb_vc
; i
<= last_fb_vc
; i
++) {
2607 fb_info
= registered_fb
[j
];
2608 if (fb_info
!= info
)
2613 if (fb_mode_is_equal(p
->mode
, mode
)) {
2621 static int fbcon_fb_registered(int idx
)
2625 if (info_idx
== -1) {
2626 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
2627 if (con2fb_map_boot
[i
] == idx
) {
2633 ret
= fbcon_takeover(1);
2635 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
2636 if (con2fb_map_boot
[i
] == idx
)
2637 set_con2fb_map(i
, idx
, 0);
2644 static void fbcon_fb_blanked(struct fb_info
*info
, int blank
)
2646 struct fbcon_ops
*ops
= info
->fbcon_par
;
2649 if (!ops
|| ops
->currcon
< 0)
2652 vc
= vc_cons
[ops
->currcon
].d
;
2653 if (vc
->vc_mode
!= KD_TEXT
||
2654 registered_fb
[con2fb_map
[ops
->currcon
]] != info
)
2657 if (CON_IS_VISIBLE(vc
)) {
2661 do_unblank_screen(0);
2663 ops
->blank_state
= blank
;
2666 static void fbcon_new_modelist(struct fb_info
*info
)
2670 struct fb_var_screeninfo var
;
2671 struct fb_videomode
*mode
;
2673 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
2674 if (registered_fb
[con2fb_map
[i
]] != info
)
2676 if (!fb_display
[i
].mode
)
2679 display_to_var(&var
, &fb_display
[i
]);
2680 mode
= fb_find_nearest_mode(&var
, &info
->modelist
);
2681 fb_videomode_to_var(&var
, mode
);
2684 fbcon_set_disp(info
, &var
, vc
);
2686 fbcon_preset_disp(info
, &var
, i
);
2691 static int fbcon_event_notify(struct notifier_block
*self
,
2692 unsigned long action
, void *data
)
2694 struct fb_event
*event
= data
;
2695 struct fb_info
*info
= event
->info
;
2696 struct fb_videomode
*mode
;
2697 struct fb_con2fbmap
*con2fb
;
2701 case FB_EVENT_SUSPEND
:
2702 fbcon_suspended(info
);
2704 case FB_EVENT_RESUME
:
2705 fbcon_resumed(info
);
2707 case FB_EVENT_MODE_CHANGE
:
2708 fbcon_modechanged(info
);
2710 case FB_EVENT_MODE_DELETE
:
2712 ret
= fbcon_mode_deleted(info
, mode
);
2714 case FB_EVENT_FB_REGISTERED
:
2715 ret
= fbcon_fb_registered(info
->node
);
2717 case FB_EVENT_SET_CONSOLE_MAP
:
2718 con2fb
= event
->data
;
2719 ret
= set_con2fb_map(con2fb
->console
- 1,
2720 con2fb
->framebuffer
, 1);
2722 case FB_EVENT_GET_CONSOLE_MAP
:
2723 con2fb
= event
->data
;
2724 con2fb
->framebuffer
= con2fb_map
[con2fb
->console
- 1];
2726 case FB_EVENT_BLANK
:
2727 fbcon_fb_blanked(info
, *(int *)event
->data
);
2729 case FB_EVENT_NEW_MODELIST
:
2730 fbcon_new_modelist(info
);
2738 * The console `switch' structure for the frame buffer based console
2741 static const struct consw fb_con
= {
2742 .owner
= THIS_MODULE
,
2743 .con_startup
= fbcon_startup
,
2744 .con_init
= fbcon_init
,
2745 .con_deinit
= fbcon_deinit
,
2746 .con_clear
= fbcon_clear
,
2747 .con_putc
= fbcon_putc
,
2748 .con_putcs
= fbcon_putcs
,
2749 .con_cursor
= fbcon_cursor
,
2750 .con_scroll
= fbcon_scroll
,
2751 .con_bmove
= fbcon_bmove
,
2752 .con_switch
= fbcon_switch
,
2753 .con_blank
= fbcon_blank
,
2754 .con_font_set
= fbcon_set_font
,
2755 .con_font_get
= fbcon_get_font
,
2756 .con_font_default
= fbcon_set_def_font
,
2757 .con_font_copy
= fbcon_copy_font
,
2758 .con_set_palette
= fbcon_set_palette
,
2759 .con_scrolldelta
= fbcon_scrolldelta
,
2760 .con_set_origin
= fbcon_set_origin
,
2761 .con_invert_region
= fbcon_invert_region
,
2762 .con_screen_pos
= fbcon_screen_pos
,
2763 .con_getxy
= fbcon_getxy
,
2764 .con_resize
= fbcon_resize
,
2767 static struct notifier_block fbcon_event_notifier
= {
2768 .notifier_call
= fbcon_event_notify
,
2771 static int __init
fb_console_init(void)
2775 acquire_console_sem();
2776 fb_register_client(&fbcon_event_notifier
);
2777 release_console_sem();
2779 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++)
2782 if (num_registered_fb
) {
2783 for (i
= 0; i
< FB_MAX
; i
++) {
2784 if (registered_fb
[i
] != NULL
) {
2795 module_init(fb_console_init
);
2799 static void __exit
fb_console_exit(void)
2801 acquire_console_sem();
2802 fb_unregister_client(&fbcon_event_notifier
);
2803 release_console_sem();
2804 give_up_console(&fb_con
);
2807 module_exit(fb_console_exit
);
2811 MODULE_LICENSE("GPL");