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
, &info
->fix
);
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
);
233 int col
= ~(0xfff << (max(info
->var
.green
.length
,
234 max(info
->var
.red
.length
,
235 info
->var
.blue
.length
)))) & 0xff;
238 int fg
= (info
->fix
.visual
!= FB_VISUAL_MONO01
) ? col
: 0;
239 int bg
= (info
->fix
.visual
!= FB_VISUAL_MONO01
) ? 0 : col
;
244 color
= (is_fg
) ? fg
: bg
;
249 * Scale down 16-colors to 4 colors. Default 4-color palette
250 * is grayscale. However, simply dividing the values by 4
251 * will not work, as colors 1, 2 and 3 will be scaled-down
252 * to zero rendering them invisible. So empirically convert
253 * colors to a sane 4-level grayscale.
257 color
= 0; /* black */
260 color
= 2; /* white */
263 color
= 1; /* gray */
266 color
= 3; /* intense white */
272 * Last 8 entries of default 16-color palette is a more intense
273 * version of the first 8 (i.e., same chrominance, different
284 static void fb_flashcursor(void *private)
286 struct fb_info
*info
= private;
287 struct fbcon_ops
*ops
= info
->fbcon_par
;
289 struct vc_data
*vc
= NULL
;
293 if (ops
->currcon
!= -1)
294 vc
= vc_cons
[ops
->currcon
].d
;
296 if (!vc
|| !CON_IS_VISIBLE(vc
) ||
297 fbcon_is_inactive(vc
, info
) ||
298 registered_fb
[con2fb_map
[vc
->vc_num
]] != info
||
299 vc_cons
[ops
->currcon
].d
->vc_deccm
!= 1)
301 acquire_console_sem();
302 p
= &fb_display
[vc
->vc_num
];
303 c
= scr_readw((u16
*) vc
->vc_pos
);
304 mode
= (!ops
->cursor_flash
|| ops
->cursor_state
.enable
) ?
306 ops
->cursor(vc
, info
, p
, mode
, softback_lines
, get_color(vc
, info
, c
, 1),
307 get_color(vc
, info
, c
, 0));
308 release_console_sem();
311 #if defined(CONFIG_ATARI) || defined(CONFIG_MAC)
312 static int cursor_blink_rate
;
313 static irqreturn_t
fb_vbl_handler(int irq
, void *dev_id
, struct pt_regs
*fp
)
315 struct fb_info
*info
= dev_id
;
317 if (vbl_cursor_cnt
&& --vbl_cursor_cnt
== 0) {
318 schedule_work(&info
->queue
);
319 vbl_cursor_cnt
= cursor_blink_rate
;
325 static void cursor_timer_handler(unsigned long dev_addr
)
327 struct fb_info
*info
= (struct fb_info
*) dev_addr
;
328 struct fbcon_ops
*ops
= info
->fbcon_par
;
330 schedule_work(&info
->queue
);
331 mod_timer(&ops
->cursor_timer
, jiffies
+ HZ
/5);
334 static void fbcon_add_cursor_timer(struct fb_info
*info
)
336 struct fbcon_ops
*ops
= info
->fbcon_par
;
338 if ((!info
->queue
.func
|| info
->queue
.func
== fb_flashcursor
) &&
339 !(ops
->flags
& FBCON_FLAGS_CURSOR_TIMER
)) {
340 if (!info
->queue
.func
)
341 INIT_WORK(&info
->queue
, fb_flashcursor
, info
);
343 init_timer(&ops
->cursor_timer
);
344 ops
->cursor_timer
.function
= cursor_timer_handler
;
345 ops
->cursor_timer
.expires
= jiffies
+ HZ
/ 5;
346 ops
->cursor_timer
.data
= (unsigned long ) info
;
347 add_timer(&ops
->cursor_timer
);
348 ops
->flags
|= FBCON_FLAGS_CURSOR_TIMER
;
352 static void fbcon_del_cursor_timer(struct fb_info
*info
)
354 struct fbcon_ops
*ops
= info
->fbcon_par
;
356 if (info
->queue
.func
== fb_flashcursor
&&
357 ops
->flags
& FBCON_FLAGS_CURSOR_TIMER
) {
358 del_timer_sync(&ops
->cursor_timer
);
359 ops
->flags
&= ~FBCON_FLAGS_CURSOR_TIMER
;
364 static int __init
fb_console_setup(char *this_opt
)
369 if (!this_opt
|| !*this_opt
)
372 while ((options
= strsep(&this_opt
, ",")) != NULL
) {
373 if (!strncmp(options
, "font:", 5))
374 strcpy(fontname
, options
+ 5);
376 if (!strncmp(options
, "scrollback:", 11)) {
379 fbcon_softback_size
= simple_strtoul(options
, &options
, 0);
380 if (*options
== 'k' || *options
== 'K') {
381 fbcon_softback_size
*= 1024;
391 if (!strncmp(options
, "map:", 4)) {
394 for (i
= 0, j
= 0; i
< MAX_NR_CONSOLES
; i
++) {
398 (options
[j
++]-'0') % FB_MAX
;
403 if (!strncmp(options
, "vc:", 3)) {
406 first_fb_vc
= simple_strtoul(options
, &options
, 10) - 1;
409 if (*options
++ == '-')
410 last_fb_vc
= simple_strtoul(options
, &options
, 10) - 1;
411 fbcon_is_default
= 0;
417 __setup("fbcon=", fb_console_setup
);
420 static int search_fb_in_map(int idx
)
424 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
425 if (con2fb_map
[i
] == idx
)
431 static int search_for_mapped_con(void)
435 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
436 if (con2fb_map
[i
] != -1)
442 static int fbcon_takeover(int show_logo
)
446 if (!num_registered_fb
)
450 logo_shown
= FBCON_LOGO_DONTSHOW
;
452 for (i
= first_fb_vc
; i
<= last_fb_vc
; i
++)
453 con2fb_map
[i
] = info_idx
;
455 err
= take_over_console(&fb_con
, first_fb_vc
, last_fb_vc
,
458 for (i
= first_fb_vc
; i
<= last_fb_vc
; i
++) {
467 static void fbcon_prepare_logo(struct vc_data
*vc
, struct fb_info
*info
,
468 int cols
, int rows
, int new_cols
, int new_rows
)
470 /* Need to make room for the logo */
471 int cnt
, erase
= vc
->vc_video_erase_char
, step
;
472 unsigned short *save
= NULL
, *r
, *q
;
475 * remove underline attribute from erase character
476 * if black and white framebuffer.
478 if (fb_get_color_depth(&info
->var
, &info
->fix
) == 1)
480 logo_height
= fb_prepare_logo(info
);
481 logo_lines
= (logo_height
+ vc
->vc_font
.height
- 1) /
483 q
= (unsigned short *) (vc
->vc_origin
+
484 vc
->vc_size_row
* rows
);
485 step
= logo_lines
* cols
;
486 for (r
= q
- logo_lines
* cols
; r
< q
; r
++)
487 if (scr_readw(r
) != vc
->vc_video_erase_char
)
489 if (r
!= q
&& new_rows
>= rows
+ logo_lines
) {
490 save
= kmalloc(logo_lines
* new_cols
* 2, GFP_KERNEL
);
492 int i
= cols
< new_cols
? cols
: new_cols
;
493 scr_memsetw(save
, erase
, logo_lines
* new_cols
* 2);
495 for (cnt
= 0; cnt
< logo_lines
; cnt
++, r
+= i
)
496 scr_memcpyw(save
+ cnt
* new_cols
, r
, 2 * i
);
501 /* We can scroll screen down */
503 for (cnt
= rows
- logo_lines
; cnt
> 0; cnt
--) {
504 scr_memcpyw(r
+ step
, r
, vc
->vc_size_row
);
508 vc
->vc_y
+= logo_lines
;
509 vc
->vc_pos
+= logo_lines
* vc
->vc_size_row
;
512 scr_memsetw((unsigned short *) vc
->vc_origin
,
514 vc
->vc_size_row
* logo_lines
);
516 if (CON_IS_VISIBLE(vc
) && vc
->vc_mode
== KD_TEXT
) {
517 fbcon_clear_margins(vc
, 0);
522 q
= (unsigned short *) (vc
->vc_origin
+
525 scr_memcpyw(q
, save
, logo_lines
* new_cols
* 2);
526 vc
->vc_y
+= logo_lines
;
527 vc
->vc_pos
+= logo_lines
* vc
->vc_size_row
;
531 if (logo_lines
> vc
->vc_bottom
) {
532 logo_shown
= FBCON_LOGO_CANSHOW
;
534 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
535 } else if (logo_shown
!= FBCON_LOGO_DONTSHOW
) {
536 logo_shown
= FBCON_LOGO_DRAW
;
537 vc
->vc_top
= logo_lines
;
541 #ifdef CONFIG_FB_TILEBLITTING
542 static void set_blitting_type(struct vc_data
*vc
, struct fb_info
*info
,
545 struct fbcon_ops
*ops
= info
->fbcon_par
;
547 if ((info
->flags
& FBINFO_MISC_TILEBLITTING
))
548 fbcon_set_tileops(vc
, info
, p
, ops
);
550 fbcon_set_bitops(ops
);
553 static void set_blitting_type(struct vc_data
*vc
, struct fb_info
*info
,
556 struct fbcon_ops
*ops
= info
->fbcon_par
;
558 info
->flags
&= ~FBINFO_MISC_TILEBLITTING
;
559 fbcon_set_bitops(ops
);
561 #endif /* CONFIG_MISC_TILEBLITTING */
564 static int con2fb_acquire_newinfo(struct vc_data
*vc
, struct fb_info
*info
,
565 int unit
, int oldidx
)
567 struct fbcon_ops
*ops
= NULL
;
570 if (!try_module_get(info
->fbops
->owner
))
573 if (!err
&& info
->fbops
->fb_open
&&
574 info
->fbops
->fb_open(info
, 0))
578 ops
= kmalloc(sizeof(struct fbcon_ops
), GFP_KERNEL
);
584 memset(ops
, 0, sizeof(struct fbcon_ops
));
585 info
->fbcon_par
= ops
;
586 set_blitting_type(vc
, info
, NULL
);
590 con2fb_map
[unit
] = oldidx
;
591 module_put(info
->fbops
->owner
);
597 static int con2fb_release_oldinfo(struct vc_data
*vc
, struct fb_info
*oldinfo
,
598 struct fb_info
*newinfo
, int unit
,
599 int oldidx
, int found
)
601 struct fbcon_ops
*ops
= oldinfo
->fbcon_par
;
604 if (oldinfo
->fbops
->fb_release
&&
605 oldinfo
->fbops
->fb_release(oldinfo
, 0)) {
606 con2fb_map
[unit
] = oldidx
;
607 if (!found
&& newinfo
->fbops
->fb_release
)
608 newinfo
->fbops
->fb_release(newinfo
, 0);
610 module_put(newinfo
->fbops
->owner
);
615 fbcon_del_cursor_timer(oldinfo
);
616 kfree(ops
->cursor_state
.mask
);
617 kfree(ops
->cursor_data
);
618 kfree(oldinfo
->fbcon_par
);
619 oldinfo
->fbcon_par
= NULL
;
620 module_put(oldinfo
->fbops
->owner
);
626 static void con2fb_init_display(struct vc_data
*vc
, struct fb_info
*info
,
627 int unit
, int show_logo
)
629 struct fbcon_ops
*ops
= info
->fbcon_par
;
631 ops
->currcon
= fg_console
;
633 if (info
->fbops
->fb_set_par
&& !(ops
->flags
& FBCON_FLAGS_INIT
))
634 info
->fbops
->fb_set_par(info
);
636 ops
->flags
|= FBCON_FLAGS_INIT
;
640 fbcon_set_disp(info
, &info
->var
, vc
);
642 fbcon_preset_disp(info
, &info
->var
, unit
);
645 struct vc_data
*fg_vc
= vc_cons
[fg_console
].d
;
646 struct fb_info
*fg_info
=
647 registered_fb
[con2fb_map
[fg_console
]];
649 fbcon_prepare_logo(fg_vc
, fg_info
, fg_vc
->vc_cols
,
650 fg_vc
->vc_rows
, fg_vc
->vc_cols
,
654 update_screen(vc_cons
[fg_console
].d
);
658 * set_con2fb_map - map console to frame buffer device
659 * @unit: virtual console number to map
660 * @newidx: frame buffer index to map virtual console to
661 * @user: user request
663 * Maps a virtual console @unit to a frame buffer device
666 static int set_con2fb_map(int unit
, int newidx
, int user
)
668 struct vc_data
*vc
= vc_cons
[unit
].d
;
669 int oldidx
= con2fb_map
[unit
];
670 struct fb_info
*info
= registered_fb
[newidx
];
671 struct fb_info
*oldinfo
= NULL
;
674 if (oldidx
== newidx
)
680 if (!err
&& !search_for_mapped_con()) {
682 return fbcon_takeover(0);
686 oldinfo
= registered_fb
[oldidx
];
688 found
= search_fb_in_map(newidx
);
690 acquire_console_sem();
691 con2fb_map
[unit
] = newidx
;
693 err
= con2fb_acquire_newinfo(vc
, info
, unit
, oldidx
);
697 * If old fb is not mapped to any of the consoles,
698 * fbcon should release it.
700 if (!err
&& oldinfo
&& !search_fb_in_map(oldidx
))
701 err
= con2fb_release_oldinfo(vc
, oldinfo
, info
, unit
, oldidx
,
705 int show_logo
= (fg_console
== 0 && !user
&&
706 logo_shown
!= FBCON_LOGO_DONTSHOW
);
709 fbcon_add_cursor_timer(info
);
710 con2fb_map_boot
[unit
] = newidx
;
711 con2fb_init_display(vc
, info
, unit
, show_logo
);
714 release_console_sem();
719 * Low Level Operations
721 /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
722 static int var_to_display(struct display
*disp
,
723 struct fb_var_screeninfo
*var
,
724 struct fb_info
*info
)
726 disp
->xres_virtual
= var
->xres_virtual
;
727 disp
->yres_virtual
= var
->yres_virtual
;
728 disp
->bits_per_pixel
= var
->bits_per_pixel
;
729 disp
->grayscale
= var
->grayscale
;
730 disp
->nonstd
= var
->nonstd
;
731 disp
->accel_flags
= var
->accel_flags
;
732 disp
->height
= var
->height
;
733 disp
->width
= var
->width
;
734 disp
->red
= var
->red
;
735 disp
->green
= var
->green
;
736 disp
->blue
= var
->blue
;
737 disp
->transp
= var
->transp
;
738 disp
->rotate
= var
->rotate
;
739 disp
->mode
= fb_match_mode(var
, &info
->modelist
);
740 if (disp
->mode
== NULL
)
741 /* This should not happen */
746 static void display_to_var(struct fb_var_screeninfo
*var
,
747 struct display
*disp
)
749 fb_videomode_to_var(var
, disp
->mode
);
750 var
->xres_virtual
= disp
->xres_virtual
;
751 var
->yres_virtual
= disp
->yres_virtual
;
752 var
->bits_per_pixel
= disp
->bits_per_pixel
;
753 var
->grayscale
= disp
->grayscale
;
754 var
->nonstd
= disp
->nonstd
;
755 var
->accel_flags
= disp
->accel_flags
;
756 var
->height
= disp
->height
;
757 var
->width
= disp
->width
;
758 var
->red
= disp
->red
;
759 var
->green
= disp
->green
;
760 var
->blue
= disp
->blue
;
761 var
->transp
= disp
->transp
;
762 var
->rotate
= disp
->rotate
;
765 static const char *fbcon_startup(void)
767 const char *display_desc
= "frame buffer device";
768 struct display
*p
= &fb_display
[fg_console
];
769 struct vc_data
*vc
= vc_cons
[fg_console
].d
;
770 struct font_desc
*font
= NULL
;
771 struct module
*owner
;
772 struct fb_info
*info
= NULL
;
773 struct fbcon_ops
*ops
;
779 * If num_registered_fb is zero, this is a call for the dummy part.
780 * The frame buffer devices weren't initialized yet.
782 if (!num_registered_fb
|| info_idx
== -1)
785 * Instead of blindly using registered_fb[0], we use info_idx, set by
788 info
= registered_fb
[info_idx
];
792 owner
= info
->fbops
->owner
;
793 if (!try_module_get(owner
))
795 if (info
->fbops
->fb_open
&& info
->fbops
->fb_open(info
, 0)) {
800 ops
= kmalloc(sizeof(struct fbcon_ops
), GFP_KERNEL
);
806 memset(ops
, 0, sizeof(struct fbcon_ops
));
809 info
->fbcon_par
= ops
;
810 set_blitting_type(vc
, info
, NULL
);
812 if (info
->fix
.type
!= FB_TYPE_TEXT
) {
813 if (fbcon_softback_size
) {
817 kmalloc(fbcon_softback_size
,
820 fbcon_softback_size
= 0;
826 kfree((void *) softback_buf
);
832 softback_in
= softback_top
= softback_curr
=
837 /* Setup default font */
839 if (!fontname
[0] || !(font
= find_font(fontname
)))
840 font
= get_default_font(info
->var
.xres
,
842 vc
->vc_font
.width
= font
->width
;
843 vc
->vc_font
.height
= font
->height
;
844 vc
->vc_font
.data
= p
->fontdata
= font
->data
;
845 vc
->vc_font
.charcount
= 256; /* FIXME Need to support more fonts */
848 cols
= info
->var
.xres
/ vc
->vc_font
.width
;
849 rows
= info
->var
.yres
/ vc
->vc_font
.height
;
850 vc_resize(vc
, cols
, rows
);
852 DPRINTK("mode: %s\n", info
->fix
.id
);
853 DPRINTK("visual: %d\n", info
->fix
.visual
);
854 DPRINTK("res: %dx%d-%d\n", info
->var
.xres
,
856 info
->var
.bits_per_pixel
);
860 cursor_blink_rate
= ATARI_CURSOR_BLINK_RATE
;
862 request_irq(IRQ_AUTO_4
, fb_vbl_handler
,
863 IRQ_TYPE_PRIO
, "framebuffer vbl",
866 #endif /* CONFIG_ATARI */
870 * On a Macintoy, the VBL interrupt may or may not be active.
871 * As interrupt based cursor is more reliable and race free, we
872 * probe for VBL interrupts.
877 * Probe for VBL: set temp. handler ...
879 irqres
= request_irq(IRQ_MAC_VBL
, fb_vbl_detect
, 0,
880 "framebuffer vbl", info
);
884 * ... and spin for 20 ms ...
886 while (!vbl_detected
&& ++ct
< 1000)
891 ("fbcon_startup: No VBL detected, using timer based cursor.\n");
893 free_irq(IRQ_MAC_VBL
, fb_vbl_detect
);
897 * interrupt based cursor ok
899 cursor_blink_rate
= MAC_CURSOR_BLINK_RATE
;
901 request_irq(IRQ_MAC_VBL
, fb_vbl_handler
, 0,
902 "framebuffer vbl", info
);
905 * VBL not detected: fall through, use timer based cursor
910 #endif /* CONFIG_MAC */
912 fbcon_add_cursor_timer(info
);
916 static void fbcon_init(struct vc_data
*vc
, int init
)
918 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
919 struct fbcon_ops
*ops
;
920 struct vc_data
**default_mode
= vc
->vc_display_fg
;
921 struct vc_data
*svc
= *default_mode
;
922 struct display
*t
, *p
= &fb_display
[vc
->vc_num
];
923 int logo
= 1, new_rows
, new_cols
, rows
, cols
, charcnt
= 256;
926 if (info_idx
== -1 || info
== NULL
)
931 if (vc
!= svc
|| logo_shown
== FBCON_LOGO_DONTSHOW
||
932 (info
->fix
.type
== FB_TYPE_TEXT
))
935 info
->var
.xoffset
= info
->var
.yoffset
= p
->yscroll
= 0; /* reset wrap/pan */
937 if (var_to_display(p
, &info
->var
, info
))
940 /* If we are not the first console on this
941 fb, copy the font from that console */
942 t
= &fb_display
[svc
->vc_num
];
943 if (!vc
->vc_font
.data
) {
944 vc
->vc_font
.data
= p
->fontdata
= t
->fontdata
;
945 vc
->vc_font
.width
= (*default_mode
)->vc_font
.width
;
946 vc
->vc_font
.height
= (*default_mode
)->vc_font
.height
;
947 p
->userfont
= t
->userfont
;
949 REFCOUNT(p
->fontdata
)++;
952 charcnt
= FNTCHARCNT(p
->fontdata
);
953 vc
->vc_can_do_color
= (fb_get_color_depth(&info
->var
, &info
->fix
)!=1);
954 vc
->vc_complement_mask
= vc
->vc_can_do_color
? 0x7700 : 0x0800;
955 if (charcnt
== 256) {
956 vc
->vc_hi_font_mask
= 0;
958 vc
->vc_hi_font_mask
= 0x100;
959 if (vc
->vc_can_do_color
)
960 vc
->vc_complement_mask
<<= 1;
963 if (!*svc
->vc_uni_pagedir_loc
)
964 con_set_default_unimap(svc
);
965 if (!*vc
->vc_uni_pagedir_loc
)
966 con_copy_unimap(vc
, svc
);
970 new_cols
= info
->var
.xres
/ vc
->vc_font
.width
;
971 new_rows
= info
->var
.yres
/ vc
->vc_font
.height
;
972 vc_resize(vc
, new_cols
, new_rows
);
974 ops
= info
->fbcon_par
;
976 * We must always set the mode. The mode of the previous console
977 * driver could be in the same resolution but we are using different
978 * hardware so we have to initialize the hardware.
980 * We need to do it in fbcon_init() to prevent screen corruption.
982 if (CON_IS_VISIBLE(vc
)) {
983 if (info
->fbops
->fb_set_par
&&
984 !(ops
->flags
& FBCON_FLAGS_INIT
))
985 info
->fbops
->fb_set_par(info
);
986 ops
->flags
|= FBCON_FLAGS_INIT
;
991 if ((cap
& FBINFO_HWACCEL_COPYAREA
) &&
992 !(cap
& FBINFO_HWACCEL_DISABLED
))
993 p
->scrollmode
= SCROLL_MOVE
;
994 else /* default to something safe */
995 p
->scrollmode
= SCROLL_REDRAW
;
998 * ++guenther: console.c:vc_allocate() relies on initializing
999 * vc_{cols,rows}, but we must not set those if we are only
1000 * resizing the console.
1003 vc
->vc_cols
= new_cols
;
1004 vc
->vc_rows
= new_rows
;
1008 fbcon_prepare_logo(vc
, info
, cols
, rows
, new_cols
, new_rows
);
1010 if (vc
== svc
&& softback_buf
) {
1011 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
1013 softback_end
= softback_buf
+ l
* vc
->vc_size_row
;
1015 /* Smaller scrollback makes no sense, and 0 would screw
1016 the operation totally */
1022 static void fbcon_deinit(struct vc_data
*vc
)
1024 struct display
*p
= &fb_display
[vc
->vc_num
];
1031 /* ====================================================================== */
1033 /* fbcon_XXX routines - interface used by the world
1035 * This system is now divided into two levels because of complications
1036 * caused by hardware scrolling. Top level functions:
1038 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1040 * handles y values in range [0, scr_height-1] that correspond to real
1041 * screen positions. y_wrap shift means that first line of bitmap may be
1042 * anywhere on this display. These functions convert lineoffsets to
1043 * bitmap offsets and deal with the wrap-around case by splitting blits.
1045 * fbcon_bmove_physical_8() -- These functions fast implementations
1046 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1047 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1051 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1052 * Implies should only really hardware scroll in rows. Only reason for
1053 * restriction is simplicity & efficiency at the moment.
1056 static __inline__
int real_y(struct display
*p
, int ypos
)
1058 int rows
= p
->vrows
;
1061 return ypos
< rows
? ypos
: ypos
- rows
;
1065 static void fbcon_clear(struct vc_data
*vc
, int sy
, int sx
, int height
,
1068 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1069 struct fbcon_ops
*ops
= info
->fbcon_par
;
1071 struct display
*p
= &fb_display
[vc
->vc_num
];
1074 if (fbcon_is_inactive(vc
, info
))
1077 if (!height
|| !width
)
1080 /* Split blits that cross physical y_wrap boundary */
1082 y_break
= p
->vrows
- p
->yscroll
;
1083 if (sy
< y_break
&& sy
+ height
- 1 >= y_break
) {
1084 u_int b
= y_break
- sy
;
1085 ops
->clear(vc
, info
, real_y(p
, sy
), sx
, b
, width
);
1086 ops
->clear(vc
, info
, real_y(p
, sy
+ b
), sx
, height
- b
,
1089 ops
->clear(vc
, info
, real_y(p
, sy
), sx
, height
, width
);
1092 static void fbcon_putcs(struct vc_data
*vc
, const unsigned short *s
,
1093 int count
, int ypos
, int xpos
)
1095 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1096 struct display
*p
= &fb_display
[vc
->vc_num
];
1097 struct fbcon_ops
*ops
= info
->fbcon_par
;
1099 if (!fbcon_is_inactive(vc
, info
))
1100 ops
->putcs(vc
, info
, s
, count
, real_y(p
, ypos
), xpos
,
1101 get_color(vc
, info
, scr_readw(s
), 1),
1102 get_color(vc
, info
, scr_readw(s
), 0));
1105 static void fbcon_putc(struct vc_data
*vc
, int c
, int ypos
, int xpos
)
1109 scr_writew(c
, &chr
);
1110 fbcon_putcs(vc
, &chr
, 1, ypos
, xpos
);
1113 static void fbcon_clear_margins(struct vc_data
*vc
, int bottom_only
)
1115 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1116 struct fbcon_ops
*ops
= info
->fbcon_par
;
1118 if (!fbcon_is_inactive(vc
, info
))
1119 ops
->clear_margins(vc
, info
, bottom_only
);
1122 static void fbcon_cursor(struct vc_data
*vc
, int mode
)
1124 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1125 struct fbcon_ops
*ops
= info
->fbcon_par
;
1126 struct display
*p
= &fb_display
[vc
->vc_num
];
1128 int c
= scr_readw((u16
*) vc
->vc_pos
);
1130 if (fbcon_is_inactive(vc
, info
))
1133 ops
->cursor_flash
= (mode
== CM_ERASE
) ? 0 : 1;
1134 if (mode
& CM_SOFTBACK
) {
1135 mode
&= ~CM_SOFTBACK
;
1139 fbcon_set_origin(vc
);
1143 ops
->cursor(vc
, info
, p
, mode
, y
, get_color(vc
, info
, c
, 1),
1144 get_color(vc
, info
, c
, 0));
1145 vbl_cursor_cnt
= CURSOR_DRAW_DELAY
;
1148 static int scrollback_phys_max
= 0;
1149 static int scrollback_max
= 0;
1150 static int scrollback_current
= 0;
1152 static int update_var(int con
, struct fb_info
*info
)
1154 if (con
== ((struct fbcon_ops
*)info
->fbcon_par
)->currcon
)
1155 return fb_pan_display(info
, &info
->var
);
1160 * If no vc is existent yet, just set struct display
1162 static void fbcon_preset_disp(struct fb_info
*info
, struct fb_var_screeninfo
*var
,
1165 struct display
*p
= &fb_display
[unit
];
1166 struct display
*t
= &fb_display
[fg_console
];
1168 var
->xoffset
= var
->yoffset
= p
->yscroll
= 0;
1169 if (var_to_display(p
, var
, info
))
1172 p
->fontdata
= t
->fontdata
;
1173 p
->userfont
= t
->userfont
;
1175 REFCOUNT(p
->fontdata
)++;
1178 static void fbcon_set_disp(struct fb_info
*info
, struct fb_var_screeninfo
*var
,
1181 struct display
*p
= &fb_display
[vc
->vc_num
], *t
;
1182 struct vc_data
**default_mode
= vc
->vc_display_fg
;
1183 struct vc_data
*svc
= *default_mode
;
1184 int rows
, cols
, charcnt
= 256;
1186 var
->xoffset
= var
->yoffset
= p
->yscroll
= 0;
1187 if (var_to_display(p
, var
, info
))
1189 t
= &fb_display
[svc
->vc_num
];
1190 if (!vc
->vc_font
.data
) {
1191 vc
->vc_font
.data
= p
->fontdata
= t
->fontdata
;
1192 vc
->vc_font
.width
= (*default_mode
)->vc_font
.width
;
1193 vc
->vc_font
.height
= (*default_mode
)->vc_font
.height
;
1194 p
->userfont
= t
->userfont
;
1196 REFCOUNT(p
->fontdata
)++;
1199 charcnt
= FNTCHARCNT(p
->fontdata
);
1201 var
->activate
= FB_ACTIVATE_NOW
;
1202 info
->var
.activate
= var
->activate
;
1203 info
->var
.yoffset
= info
->var
.xoffset
= 0;
1204 fb_set_var(info
, var
);
1206 vc
->vc_can_do_color
= (fb_get_color_depth(&info
->var
, &info
->fix
)!=1);
1207 vc
->vc_complement_mask
= vc
->vc_can_do_color
? 0x7700 : 0x0800;
1208 if (charcnt
== 256) {
1209 vc
->vc_hi_font_mask
= 0;
1211 vc
->vc_hi_font_mask
= 0x100;
1212 if (vc
->vc_can_do_color
)
1213 vc
->vc_complement_mask
<<= 1;
1216 if (!*svc
->vc_uni_pagedir_loc
)
1217 con_set_default_unimap(svc
);
1218 if (!*vc
->vc_uni_pagedir_loc
)
1219 con_copy_unimap(vc
, svc
);
1221 cols
= var
->xres
/ vc
->vc_font
.width
;
1222 rows
= var
->yres
/ vc
->vc_font
.height
;
1223 vc_resize(vc
, cols
, rows
);
1224 if (CON_IS_VISIBLE(vc
)) {
1227 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
1230 softback_end
= softback_buf
+ l
*
1233 /* Smaller scrollback makes no sense, and 0
1234 would screw the operation totally */
1241 static __inline__
void ywrap_up(struct vc_data
*vc
, int count
)
1243 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1244 struct display
*p
= &fb_display
[vc
->vc_num
];
1246 p
->yscroll
+= count
;
1247 if (p
->yscroll
>= p
->vrows
) /* Deal with wrap */
1248 p
->yscroll
-= p
->vrows
;
1249 info
->var
.xoffset
= 0;
1250 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1251 info
->var
.vmode
|= FB_VMODE_YWRAP
;
1252 update_var(vc
->vc_num
, info
);
1253 scrollback_max
+= count
;
1254 if (scrollback_max
> scrollback_phys_max
)
1255 scrollback_max
= scrollback_phys_max
;
1256 scrollback_current
= 0;
1259 static __inline__
void ywrap_down(struct vc_data
*vc
, int count
)
1261 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1262 struct display
*p
= &fb_display
[vc
->vc_num
];
1264 p
->yscroll
-= count
;
1265 if (p
->yscroll
< 0) /* Deal with wrap */
1266 p
->yscroll
+= p
->vrows
;
1267 info
->var
.xoffset
= 0;
1268 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1269 info
->var
.vmode
|= FB_VMODE_YWRAP
;
1270 update_var(vc
->vc_num
, info
);
1271 scrollback_max
-= count
;
1272 if (scrollback_max
< 0)
1274 scrollback_current
= 0;
1277 static __inline__
void ypan_up(struct vc_data
*vc
, int count
)
1279 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1280 struct display
*p
= &fb_display
[vc
->vc_num
];
1281 struct fbcon_ops
*ops
= info
->fbcon_par
;
1283 p
->yscroll
+= count
;
1284 if (p
->yscroll
> p
->vrows
- vc
->vc_rows
) {
1285 ops
->bmove(vc
, info
, p
->vrows
- vc
->vc_rows
,
1286 0, 0, 0, vc
->vc_rows
, vc
->vc_cols
);
1287 p
->yscroll
-= p
->vrows
- vc
->vc_rows
;
1289 info
->var
.xoffset
= 0;
1290 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1291 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
1292 update_var(vc
->vc_num
, info
);
1293 fbcon_clear_margins(vc
, 1);
1294 scrollback_max
+= count
;
1295 if (scrollback_max
> scrollback_phys_max
)
1296 scrollback_max
= scrollback_phys_max
;
1297 scrollback_current
= 0;
1300 static __inline__
void ypan_up_redraw(struct vc_data
*vc
, int t
, int count
)
1302 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1303 struct display
*p
= &fb_display
[vc
->vc_num
];
1306 p
->yscroll
+= count
;
1307 if (p
->yscroll
> p
->vrows
- vc
->vc_rows
) {
1308 p
->yscroll
-= p
->vrows
- vc
->vc_rows
;
1312 info
->var
.xoffset
= 0;
1313 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1314 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
1316 fbcon_redraw_move(vc
, p
, t
+ count
, vc
->vc_rows
- count
, t
);
1317 update_var(vc
->vc_num
, info
);
1318 fbcon_clear_margins(vc
, 1);
1319 scrollback_max
+= count
;
1320 if (scrollback_max
> scrollback_phys_max
)
1321 scrollback_max
= scrollback_phys_max
;
1322 scrollback_current
= 0;
1325 static __inline__
void ypan_down(struct vc_data
*vc
, int count
)
1327 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1328 struct display
*p
= &fb_display
[vc
->vc_num
];
1329 struct fbcon_ops
*ops
= info
->fbcon_par
;
1331 p
->yscroll
-= count
;
1332 if (p
->yscroll
< 0) {
1333 ops
->bmove(vc
, info
, 0, 0, p
->vrows
- vc
->vc_rows
,
1334 0, vc
->vc_rows
, vc
->vc_cols
);
1335 p
->yscroll
+= p
->vrows
- vc
->vc_rows
;
1337 info
->var
.xoffset
= 0;
1338 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1339 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
1340 update_var(vc
->vc_num
, info
);
1341 fbcon_clear_margins(vc
, 1);
1342 scrollback_max
-= count
;
1343 if (scrollback_max
< 0)
1345 scrollback_current
= 0;
1348 static __inline__
void ypan_down_redraw(struct vc_data
*vc
, int t
, int count
)
1350 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1351 struct display
*p
= &fb_display
[vc
->vc_num
];
1354 p
->yscroll
-= count
;
1355 if (p
->yscroll
< 0) {
1356 p
->yscroll
+= p
->vrows
- vc
->vc_rows
;
1359 info
->var
.xoffset
= 0;
1360 info
->var
.yoffset
= p
->yscroll
* vc
->vc_font
.height
;
1361 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
1363 fbcon_redraw_move(vc
, p
, t
, vc
->vc_rows
- count
, t
+ count
);
1364 update_var(vc
->vc_num
, info
);
1365 fbcon_clear_margins(vc
, 1);
1366 scrollback_max
-= count
;
1367 if (scrollback_max
< 0)
1369 scrollback_current
= 0;
1372 static void fbcon_redraw_softback(struct vc_data
*vc
, struct display
*p
,
1375 int count
= vc
->vc_rows
;
1376 unsigned short *d
, *s
;
1380 d
= (u16
*) softback_curr
;
1381 if (d
== (u16
*) softback_in
)
1382 d
= (u16
*) vc
->vc_origin
;
1383 n
= softback_curr
+ delta
* vc
->vc_size_row
;
1384 softback_lines
-= delta
;
1386 if (softback_curr
< softback_top
&& n
< softback_buf
) {
1387 n
+= softback_end
- softback_buf
;
1388 if (n
< softback_top
) {
1390 (softback_top
- n
) / vc
->vc_size_row
;
1393 } else if (softback_curr
>= softback_top
1394 && n
< softback_top
) {
1396 (softback_top
- n
) / vc
->vc_size_row
;
1400 if (softback_curr
> softback_in
&& n
>= softback_end
) {
1401 n
+= softback_buf
- softback_end
;
1402 if (n
> softback_in
) {
1406 } else if (softback_curr
<= softback_in
&& n
> softback_in
) {
1411 if (n
== softback_curr
)
1414 s
= (u16
*) softback_curr
;
1415 if (s
== (u16
*) softback_in
)
1416 s
= (u16
*) vc
->vc_origin
;
1418 unsigned short *start
;
1422 unsigned short attr
= 1;
1425 le
= advance_row(s
, 1);
1428 if (attr
!= (c
& 0xff00)) {
1431 fbcon_putcs(vc
, start
, s
- start
,
1437 if (c
== scr_readw(d
)) {
1439 fbcon_putcs(vc
, start
, s
- start
,
1452 fbcon_putcs(vc
, start
, s
- start
, line
, x
);
1454 if (d
== (u16
*) softback_end
)
1455 d
= (u16
*) softback_buf
;
1456 if (d
== (u16
*) softback_in
)
1457 d
= (u16
*) vc
->vc_origin
;
1458 if (s
== (u16
*) softback_end
)
1459 s
= (u16
*) softback_buf
;
1460 if (s
== (u16
*) softback_in
)
1461 s
= (u16
*) vc
->vc_origin
;
1465 static void fbcon_redraw_move(struct vc_data
*vc
, struct display
*p
,
1466 int line
, int count
, int dy
)
1468 unsigned short *s
= (unsigned short *)
1469 (vc
->vc_origin
+ vc
->vc_size_row
* line
);
1472 unsigned short *start
= s
;
1473 unsigned short *le
= advance_row(s
, 1);
1476 unsigned short attr
= 1;
1480 if (attr
!= (c
& 0xff00)) {
1483 fbcon_putcs(vc
, start
, s
- start
,
1489 console_conditional_schedule();
1493 fbcon_putcs(vc
, start
, s
- start
, dy
, x
);
1494 console_conditional_schedule();
1499 static void fbcon_redraw(struct vc_data
*vc
, struct display
*p
,
1500 int line
, int count
, int offset
)
1502 unsigned short *d
= (unsigned short *)
1503 (vc
->vc_origin
+ vc
->vc_size_row
* line
);
1504 unsigned short *s
= d
+ offset
;
1507 unsigned short *start
= s
;
1508 unsigned short *le
= advance_row(s
, 1);
1511 unsigned short attr
= 1;
1515 if (attr
!= (c
& 0xff00)) {
1518 fbcon_putcs(vc
, start
, s
- start
,
1524 if (c
== scr_readw(d
)) {
1526 fbcon_putcs(vc
, start
, s
- start
,
1536 console_conditional_schedule();
1541 fbcon_putcs(vc
, start
, s
- start
, line
, x
);
1542 console_conditional_schedule();
1547 /* NOTE: We subtract two lines from these pointers */
1548 s
-= vc
->vc_size_row
;
1549 d
-= vc
->vc_size_row
;
1554 static inline void fbcon_softback_note(struct vc_data
*vc
, int t
,
1559 if (vc
->vc_num
!= fg_console
)
1561 p
= (unsigned short *) (vc
->vc_origin
+ t
* vc
->vc_size_row
);
1564 scr_memcpyw((u16
*) softback_in
, p
, vc
->vc_size_row
);
1566 p
= advance_row(p
, 1);
1567 softback_in
+= vc
->vc_size_row
;
1568 if (softback_in
== softback_end
)
1569 softback_in
= softback_buf
;
1570 if (softback_in
== softback_top
) {
1571 softback_top
+= vc
->vc_size_row
;
1572 if (softback_top
== softback_end
)
1573 softback_top
= softback_buf
;
1576 softback_curr
= softback_in
;
1579 static int fbcon_scroll(struct vc_data
*vc
, int t
, int b
, int dir
,
1582 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1583 struct display
*p
= &fb_display
[vc
->vc_num
];
1584 struct fbcon_ops
*ops
= info
->fbcon_par
;
1585 int scroll_partial
= info
->flags
& FBINFO_PARTIAL_PAN_OK
;
1587 if (fbcon_is_inactive(vc
, info
))
1590 fbcon_cursor(vc
, CM_ERASE
);
1593 * ++Geert: Only use ywrap/ypan if the console is in text mode
1594 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1595 * whole screen (prevents flicker).
1600 if (count
> vc
->vc_rows
) /* Maximum realistic size */
1601 count
= vc
->vc_rows
;
1603 fbcon_softback_note(vc
, t
, count
);
1604 if (logo_shown
>= 0)
1606 switch (p
->scrollmode
) {
1608 ops
->bmove(vc
, info
, t
+ count
, 0, t
, 0,
1609 b
- t
- count
, vc
->vc_cols
);
1610 ops
->clear(vc
, info
, b
- count
, 0, count
,
1614 case SCROLL_WRAP_MOVE
:
1615 if (b
- t
- count
> 3 * vc
->vc_rows
>> 2) {
1617 fbcon_bmove(vc
, 0, 0, count
, 0, t
,
1619 ywrap_up(vc
, count
);
1620 if (vc
->vc_rows
- b
> 0)
1621 fbcon_bmove(vc
, b
- count
, 0, b
, 0,
1624 } else if (info
->flags
& FBINFO_READS_FAST
)
1625 fbcon_bmove(vc
, t
+ count
, 0, t
, 0,
1626 b
- t
- count
, vc
->vc_cols
);
1629 fbcon_clear(vc
, b
- count
, 0, count
, vc
->vc_cols
);
1632 case SCROLL_PAN_REDRAW
:
1633 if ((p
->yscroll
+ count
<=
1634 2 * (p
->vrows
- vc
->vc_rows
))
1635 && ((!scroll_partial
&& (b
- t
== vc
->vc_rows
))
1638 3 * vc
->vc_rows
>> 2)))) {
1640 fbcon_redraw_move(vc
, p
, 0, t
, count
);
1641 ypan_up_redraw(vc
, t
, count
);
1642 if (vc
->vc_rows
- b
> 0)
1643 fbcon_redraw_move(vc
, p
, b
- count
,
1644 vc
->vc_rows
- b
, b
);
1646 fbcon_redraw_move(vc
, p
, t
+ count
, b
- t
- count
, t
);
1647 fbcon_clear(vc
, b
- count
, 0, count
, vc
->vc_cols
);
1650 case SCROLL_PAN_MOVE
:
1651 if ((p
->yscroll
+ count
<=
1652 2 * (p
->vrows
- vc
->vc_rows
))
1653 && ((!scroll_partial
&& (b
- t
== vc
->vc_rows
))
1656 3 * vc
->vc_rows
>> 2)))) {
1658 fbcon_bmove(vc
, 0, 0, count
, 0, t
,
1661 if (vc
->vc_rows
- b
> 0)
1662 fbcon_bmove(vc
, b
- count
, 0, b
, 0,
1665 } else if (info
->flags
& FBINFO_READS_FAST
)
1666 fbcon_bmove(vc
, t
+ count
, 0, t
, 0,
1667 b
- t
- count
, vc
->vc_cols
);
1670 fbcon_clear(vc
, b
- count
, 0, count
, vc
->vc_cols
);
1675 fbcon_redraw(vc
, p
, t
, b
- t
- count
,
1676 count
* vc
->vc_cols
);
1677 fbcon_clear(vc
, b
- count
, 0, count
, vc
->vc_cols
);
1678 scr_memsetw((unsigned short *) (vc
->vc_origin
+
1681 vc
->vc_video_erase_char
,
1682 vc
->vc_size_row
* count
);
1688 if (count
> vc
->vc_rows
) /* Maximum realistic size */
1689 count
= vc
->vc_rows
;
1690 if (logo_shown
>= 0)
1692 switch (p
->scrollmode
) {
1694 ops
->bmove(vc
, info
, t
, 0, t
+ count
, 0,
1695 b
- t
- count
, vc
->vc_cols
);
1696 ops
->clear(vc
, info
, t
, 0, count
, vc
->vc_cols
);
1699 case SCROLL_WRAP_MOVE
:
1700 if (b
- t
- count
> 3 * vc
->vc_rows
>> 2) {
1701 if (vc
->vc_rows
- b
> 0)
1702 fbcon_bmove(vc
, b
, 0, b
- count
, 0,
1705 ywrap_down(vc
, count
);
1707 fbcon_bmove(vc
, count
, 0, 0, 0, t
,
1709 } else if (info
->flags
& FBINFO_READS_FAST
)
1710 fbcon_bmove(vc
, t
, 0, t
+ count
, 0,
1711 b
- t
- count
, vc
->vc_cols
);
1714 fbcon_clear(vc
, t
, 0, count
, vc
->vc_cols
);
1717 case SCROLL_PAN_MOVE
:
1718 if ((count
- p
->yscroll
<= p
->vrows
- vc
->vc_rows
)
1719 && ((!scroll_partial
&& (b
- t
== vc
->vc_rows
))
1722 3 * vc
->vc_rows
>> 2)))) {
1723 if (vc
->vc_rows
- b
> 0)
1724 fbcon_bmove(vc
, b
, 0, b
- count
, 0,
1727 ypan_down(vc
, count
);
1729 fbcon_bmove(vc
, count
, 0, 0, 0, t
,
1731 } else if (info
->flags
& FBINFO_READS_FAST
)
1732 fbcon_bmove(vc
, t
, 0, t
+ count
, 0,
1733 b
- t
- count
, vc
->vc_cols
);
1736 fbcon_clear(vc
, t
, 0, count
, vc
->vc_cols
);
1739 case SCROLL_PAN_REDRAW
:
1740 if ((count
- p
->yscroll
<= p
->vrows
- vc
->vc_rows
)
1741 && ((!scroll_partial
&& (b
- t
== vc
->vc_rows
))
1744 3 * vc
->vc_rows
>> 2)))) {
1745 if (vc
->vc_rows
- b
> 0)
1746 fbcon_redraw_move(vc
, p
, b
, vc
->vc_rows
- b
,
1748 ypan_down_redraw(vc
, t
, count
);
1750 fbcon_redraw_move(vc
, p
, count
, t
, 0);
1752 fbcon_redraw_move(vc
, p
, t
, b
- t
- count
, t
+ count
);
1753 fbcon_clear(vc
, t
, 0, count
, vc
->vc_cols
);
1758 fbcon_redraw(vc
, p
, b
- 1, b
- t
- count
,
1759 -count
* vc
->vc_cols
);
1760 fbcon_clear(vc
, t
, 0, count
, vc
->vc_cols
);
1761 scr_memsetw((unsigned short *) (vc
->vc_origin
+
1764 vc
->vc_video_erase_char
,
1765 vc
->vc_size_row
* count
);
1773 static void fbcon_bmove(struct vc_data
*vc
, int sy
, int sx
, int dy
, int dx
,
1774 int height
, int width
)
1776 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1777 struct display
*p
= &fb_display
[vc
->vc_num
];
1779 if (fbcon_is_inactive(vc
, info
))
1782 if (!width
|| !height
)
1785 /* Split blits that cross physical y_wrap case.
1786 * Pathological case involves 4 blits, better to use recursive
1787 * code rather than unrolled case
1789 * Recursive invocations don't need to erase the cursor over and
1790 * over again, so we use fbcon_bmove_rec()
1792 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, height
, width
,
1793 p
->vrows
- p
->yscroll
);
1796 static void fbcon_bmove_rec(struct vc_data
*vc
, struct display
*p
, int sy
, int sx
,
1797 int dy
, int dx
, int height
, int width
, u_int y_break
)
1799 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1800 struct fbcon_ops
*ops
= info
->fbcon_par
;
1803 if (sy
< y_break
&& sy
+ height
> y_break
) {
1805 if (dy
< sy
) { /* Avoid trashing self */
1806 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, b
, width
,
1808 fbcon_bmove_rec(vc
, p
, sy
+ b
, sx
, dy
+ b
, dx
,
1809 height
- b
, width
, y_break
);
1811 fbcon_bmove_rec(vc
, p
, sy
+ b
, sx
, dy
+ b
, dx
,
1812 height
- b
, width
, y_break
);
1813 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, b
, width
,
1819 if (dy
< y_break
&& dy
+ height
> y_break
) {
1821 if (dy
< sy
) { /* Avoid trashing self */
1822 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, b
, width
,
1824 fbcon_bmove_rec(vc
, p
, sy
+ b
, sx
, dy
+ b
, dx
,
1825 height
- b
, width
, y_break
);
1827 fbcon_bmove_rec(vc
, p
, sy
+ b
, sx
, dy
+ b
, dx
,
1828 height
- b
, width
, y_break
);
1829 fbcon_bmove_rec(vc
, p
, sy
, sx
, dy
, dx
, b
, width
,
1834 ops
->bmove(vc
, info
, real_y(p
, sy
), sx
, real_y(p
, dy
), dx
,
1838 static __inline__
void updatescrollmode(struct display
*p
, struct fb_info
*info
,
1841 int fh
= vc
->vc_font
.height
;
1842 int cap
= info
->flags
;
1843 int good_pan
= (cap
& FBINFO_HWACCEL_YPAN
)
1844 && divides(info
->fix
.ypanstep
, vc
->vc_font
.height
)
1845 && info
->var
.yres_virtual
> info
->var
.yres
;
1846 int good_wrap
= (cap
& FBINFO_HWACCEL_YWRAP
)
1847 && divides(info
->fix
.ywrapstep
, vc
->vc_font
.height
)
1848 && divides(vc
->vc_font
.height
, info
->var
.yres_virtual
);
1849 int reading_fast
= cap
& FBINFO_READS_FAST
;
1850 int fast_copyarea
= (cap
& FBINFO_HWACCEL_COPYAREA
) && !(cap
& FBINFO_HWACCEL_DISABLED
);
1851 int fast_imageblit
= (cap
& FBINFO_HWACCEL_IMAGEBLIT
) && !(cap
& FBINFO_HWACCEL_DISABLED
);
1853 p
->vrows
= info
->var
.yres_virtual
/fh
;
1854 if (info
->var
.yres
> (fh
* (vc
->vc_rows
+ 1)))
1855 p
->vrows
-= (info
->var
.yres
- (fh
* vc
->vc_rows
)) / fh
;
1856 if ((info
->var
.yres
% fh
) && (info
->var
.yres_virtual
% fh
<
1857 info
->var
.yres
% fh
))
1860 if (good_wrap
|| good_pan
) {
1861 if (reading_fast
|| fast_copyarea
)
1862 p
->scrollmode
= good_wrap
? SCROLL_WRAP_MOVE
: SCROLL_PAN_MOVE
;
1864 p
->scrollmode
= good_wrap
? SCROLL_REDRAW
:
1867 if (reading_fast
|| (fast_copyarea
&& !fast_imageblit
))
1868 p
->scrollmode
= SCROLL_MOVE
;
1870 p
->scrollmode
= SCROLL_REDRAW
;
1874 static int fbcon_resize(struct vc_data
*vc
, unsigned int width
,
1875 unsigned int height
)
1877 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1878 struct display
*p
= &fb_display
[vc
->vc_num
];
1879 struct fb_var_screeninfo var
= info
->var
;
1881 int fw
= vc
->vc_font
.width
;
1882 int fh
= vc
->vc_font
.height
;
1884 var
.xres
= width
* fw
;
1885 var
.yres
= height
* fh
;
1886 x_diff
= info
->var
.xres
- var
.xres
;
1887 y_diff
= info
->var
.yres
- var
.yres
;
1888 if (x_diff
< 0 || x_diff
> fw
|| (y_diff
< 0 || y_diff
> fh
)) {
1889 struct fb_videomode
*mode
;
1891 DPRINTK("attempting resize %ix%i\n", var
.xres
, var
.yres
);
1892 mode
= fb_find_best_mode(&var
, &info
->modelist
);
1895 fb_videomode_to_var(&var
, mode
);
1896 if (width
> var
.xres
/fw
|| height
> var
.yres
/fh
)
1899 * The following can probably have any value... Do we need to
1902 var
.bits_per_pixel
= p
->bits_per_pixel
;
1903 var
.xres_virtual
= p
->xres_virtual
;
1904 var
.yres_virtual
= p
->yres_virtual
;
1905 var
.accel_flags
= p
->accel_flags
;
1906 var
.width
= p
->width
;
1907 var
.height
= p
->height
;
1909 var
.green
= p
->green
;
1911 var
.transp
= p
->transp
;
1912 var
.nonstd
= p
->nonstd
;
1914 DPRINTK("resize now %ix%i\n", var
.xres
, var
.yres
);
1915 if (CON_IS_VISIBLE(vc
)) {
1916 var
.activate
= FB_ACTIVATE_NOW
|
1918 fb_set_var(info
, &var
);
1920 var_to_display(p
, &info
->var
, info
);
1922 updatescrollmode(p
, info
, vc
);
1926 static int fbcon_switch(struct vc_data
*vc
)
1928 struct fb_info
*info
, *old_info
= NULL
;
1929 struct display
*p
= &fb_display
[vc
->vc_num
];
1930 struct fb_var_screeninfo var
;
1931 int i
, prev_console
;
1933 info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
1936 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
1938 fbcon_set_origin(vc
);
1939 softback_top
= softback_curr
= softback_in
= softback_buf
;
1943 softback_end
= softback_buf
+ l
* vc
->vc_size_row
;
1945 /* Smaller scrollback makes no sense, and 0 would screw
1946 the operation totally */
1951 if (logo_shown
>= 0) {
1952 struct vc_data
*conp2
= vc_cons
[logo_shown
].d
;
1954 if (conp2
->vc_top
== logo_lines
1955 && conp2
->vc_bottom
== conp2
->vc_rows
)
1957 logo_shown
= FBCON_LOGO_CANSHOW
;
1960 prev_console
= ((struct fbcon_ops
*)info
->fbcon_par
)->currcon
;
1961 if (prev_console
!= -1)
1962 old_info
= registered_fb
[con2fb_map
[prev_console
]];
1964 * FIXME: If we have multiple fbdev's loaded, we need to
1965 * update all info->currcon. Perhaps, we can place this
1966 * in a centralized structure, but this might break some
1969 * info->currcon = vc->vc_num;
1971 for (i
= 0; i
< FB_MAX
; i
++) {
1972 if (registered_fb
[i
] != NULL
&& registered_fb
[i
]->fbcon_par
) {
1973 struct fbcon_ops
*ops
= registered_fb
[i
]->fbcon_par
;
1975 ops
->currcon
= vc
->vc_num
;
1978 memset(&var
, 0, sizeof(struct fb_var_screeninfo
));
1979 display_to_var(&var
, p
);
1980 var
.activate
= FB_ACTIVATE_NOW
;
1983 * make sure we don't unnecessarily trip the memcmp()
1986 info
->var
.activate
= var
.activate
;
1987 info
->var
.yoffset
= info
->var
.xoffset
= p
->yscroll
= 0;
1988 fb_set_var(info
, &var
);
1990 if (old_info
!= NULL
&& old_info
!= info
) {
1991 if (info
->fbops
->fb_set_par
)
1992 info
->fbops
->fb_set_par(info
);
1993 fbcon_del_cursor_timer(old_info
);
1994 fbcon_add_cursor_timer(info
);
1997 set_blitting_type(vc
, info
, p
);
1998 ((struct fbcon_ops
*)info
->fbcon_par
)->cursor_reset
= 1;
2000 vc
->vc_can_do_color
= (fb_get_color_depth(&info
->var
, &info
->fix
)!=1);
2001 vc
->vc_complement_mask
= vc
->vc_can_do_color
? 0x7700 : 0x0800;
2002 updatescrollmode(p
, info
, vc
);
2004 switch (p
->scrollmode
) {
2005 case SCROLL_WRAP_MOVE
:
2006 scrollback_phys_max
= p
->vrows
- vc
->vc_rows
;
2008 case SCROLL_PAN_MOVE
:
2009 case SCROLL_PAN_REDRAW
:
2010 scrollback_phys_max
= p
->vrows
- 2 * vc
->vc_rows
;
2011 if (scrollback_phys_max
< 0)
2012 scrollback_phys_max
= 0;
2015 scrollback_phys_max
= 0;
2019 scrollback_current
= 0;
2021 update_var(vc
->vc_num
, info
);
2022 fbcon_set_palette(vc
, color_table
);
2023 fbcon_clear_margins(vc
, 0);
2025 if (logo_shown
== FBCON_LOGO_DRAW
) {
2027 logo_shown
= fg_console
;
2028 /* This is protected above by initmem_freed */
2031 vc
->vc_origin
+ vc
->vc_size_row
* vc
->vc_top
,
2032 vc
->vc_size_row
* (vc
->vc_bottom
-
2039 static void fbcon_generic_blank(struct vc_data
*vc
, struct fb_info
*info
,
2043 unsigned short charmask
= vc
->vc_hi_font_mask
?
2045 unsigned short oldc
;
2047 oldc
= vc
->vc_video_erase_char
;
2048 vc
->vc_video_erase_char
&= charmask
;
2049 fbcon_clear(vc
, 0, 0, vc
->vc_rows
, vc
->vc_cols
);
2050 vc
->vc_video_erase_char
= oldc
;
2054 static int fbcon_blank(struct vc_data
*vc
, int blank
, int mode_switch
)
2056 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
2057 struct fbcon_ops
*ops
= info
->fbcon_par
;
2060 struct fb_var_screeninfo var
= info
->var
;
2065 var
.activate
= FB_ACTIVATE_NOW
| FB_ACTIVATE_FORCE
;
2066 fb_set_var(info
, &var
);
2071 if (!fbcon_is_inactive(vc
, info
)) {
2072 if (ops
->blank_state
!= blank
) {
2073 ops
->blank_state
= blank
;
2074 fbcon_cursor(vc
, blank
? CM_ERASE
: CM_DRAW
);
2075 ops
->cursor_flash
= (!blank
);
2077 if (fb_blank(info
, blank
))
2078 fbcon_generic_blank(vc
, info
, blank
);
2086 fbcon_add_cursor_timer(info
);
2088 fbcon_del_cursor_timer(info
);
2093 static void fbcon_free_font(struct display
*p
)
2095 if (p
->userfont
&& p
->fontdata
&& (--REFCOUNT(p
->fontdata
) == 0))
2096 kfree(p
->fontdata
- FONT_EXTRA_WORDS
* sizeof(int));
2101 static int fbcon_get_font(struct vc_data
*vc
, struct console_font
*font
)
2103 u8
*fontdata
= vc
->vc_font
.data
;
2104 u8
*data
= font
->data
;
2107 font
->width
= vc
->vc_font
.width
;
2108 font
->height
= vc
->vc_font
.height
;
2109 font
->charcount
= vc
->vc_hi_font_mask
? 512 : 256;
2113 if (font
->width
<= 8) {
2114 j
= vc
->vc_font
.height
;
2115 for (i
= 0; i
< font
->charcount
; i
++) {
2116 memcpy(data
, fontdata
, j
);
2117 memset(data
+ j
, 0, 32 - j
);
2121 } else if (font
->width
<= 16) {
2122 j
= vc
->vc_font
.height
* 2;
2123 for (i
= 0; i
< font
->charcount
; i
++) {
2124 memcpy(data
, fontdata
, j
);
2125 memset(data
+ j
, 0, 64 - j
);
2129 } else if (font
->width
<= 24) {
2130 for (i
= 0; i
< font
->charcount
; i
++) {
2131 for (j
= 0; j
< vc
->vc_font
.height
; j
++) {
2132 *data
++ = fontdata
[0];
2133 *data
++ = fontdata
[1];
2134 *data
++ = fontdata
[2];
2135 fontdata
+= sizeof(u32
);
2137 memset(data
, 0, 3 * (32 - j
));
2138 data
+= 3 * (32 - j
);
2141 j
= vc
->vc_font
.height
* 4;
2142 for (i
= 0; i
< font
->charcount
; i
++) {
2143 memcpy(data
, fontdata
, j
);
2144 memset(data
+ j
, 0, 128 - j
);
2152 static int fbcon_do_set_font(struct vc_data
*vc
, int w
, int h
,
2153 u8
* data
, int userfont
)
2155 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
2156 struct display
*p
= &fb_display
[vc
->vc_num
];
2159 char *old_data
= NULL
;
2161 if (CON_IS_VISIBLE(vc
) && softback_lines
)
2162 fbcon_set_origin(vc
);
2164 resize
= (w
!= vc
->vc_font
.width
) || (h
!= vc
->vc_font
.height
);
2166 old_data
= vc
->vc_font
.data
;
2168 cnt
= FNTCHARCNT(data
);
2171 vc
->vc_font
.data
= p
->fontdata
= data
;
2172 if ((p
->userfont
= userfont
))
2174 vc
->vc_font
.width
= w
;
2175 vc
->vc_font
.height
= h
;
2176 if (vc
->vc_hi_font_mask
&& cnt
== 256) {
2177 vc
->vc_hi_font_mask
= 0;
2178 if (vc
->vc_can_do_color
) {
2179 vc
->vc_complement_mask
>>= 1;
2180 vc
->vc_s_complement_mask
>>= 1;
2183 /* ++Edmund: reorder the attribute bits */
2184 if (vc
->vc_can_do_color
) {
2185 unsigned short *cp
=
2186 (unsigned short *) vc
->vc_origin
;
2187 int count
= vc
->vc_screenbuf_size
/ 2;
2189 for (; count
> 0; count
--, cp
++) {
2191 scr_writew(((c
& 0xfe00) >> 1) |
2194 c
= vc
->vc_video_erase_char
;
2195 vc
->vc_video_erase_char
=
2196 ((c
& 0xfe00) >> 1) | (c
& 0xff);
2199 } else if (!vc
->vc_hi_font_mask
&& cnt
== 512) {
2200 vc
->vc_hi_font_mask
= 0x100;
2201 if (vc
->vc_can_do_color
) {
2202 vc
->vc_complement_mask
<<= 1;
2203 vc
->vc_s_complement_mask
<<= 1;
2206 /* ++Edmund: reorder the attribute bits */
2208 unsigned short *cp
=
2209 (unsigned short *) vc
->vc_origin
;
2210 int count
= vc
->vc_screenbuf_size
/ 2;
2212 for (; count
> 0; count
--, cp
++) {
2213 unsigned short newc
;
2215 if (vc
->vc_can_do_color
)
2217 ((c
& 0xff00) << 1) | (c
&
2221 scr_writew(newc
, cp
);
2223 c
= vc
->vc_video_erase_char
;
2224 if (vc
->vc_can_do_color
) {
2225 vc
->vc_video_erase_char
=
2226 ((c
& 0xff00) << 1) | (c
& 0xff);
2229 vc
->vc_video_erase_char
= c
& ~0x100;
2235 /* reset wrap/pan */
2236 info
->var
.xoffset
= info
->var
.yoffset
= p
->yscroll
= 0;
2237 vc_resize(vc
, info
->var
.xres
/ w
, info
->var
.yres
/ h
);
2238 if (CON_IS_VISIBLE(vc
) && softback_buf
) {
2239 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
2242 softback_buf
+ l
* vc
->vc_size_row
;
2244 /* Smaller scrollback makes no sense, and 0 would screw
2245 the operation totally */
2249 } else if (CON_IS_VISIBLE(vc
)
2250 && vc
->vc_mode
== KD_TEXT
) {
2251 fbcon_clear_margins(vc
, 0);
2255 if (old_data
&& (--REFCOUNT(old_data
) == 0))
2256 kfree(old_data
- FONT_EXTRA_WORDS
* sizeof(int));
2260 static int fbcon_copy_font(struct vc_data
*vc
, int con
)
2262 struct display
*od
= &fb_display
[con
];
2263 struct console_font
*f
= &vc
->vc_font
;
2265 if (od
->fontdata
== f
->data
)
2266 return 0; /* already the same font... */
2267 return fbcon_do_set_font(vc
, f
->width
, f
->height
, od
->fontdata
, od
->userfont
);
2271 * User asked to set font; we are guaranteed that
2272 * a) width and height are in range 1..32
2273 * b) charcount does not exceed 512
2274 * but lets not assume that, since someone might someday want to use larger
2275 * fonts. And charcount of 512 is small for unicode support.
2277 * However, user space gives the font in 32 rows , regardless of
2278 * actual font height. So a new API is needed if support for larger fonts
2279 * is ever implemented.
2282 static int fbcon_set_font(struct vc_data
*vc
, struct console_font
*font
, unsigned flags
)
2284 unsigned charcount
= font
->charcount
;
2285 int w
= font
->width
;
2286 int h
= font
->height
;
2289 u8
*new_data
, *data
= font
->data
;
2290 int pitch
= (font
->width
+7) >> 3;
2292 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2293 * If not this check should be changed to charcount < 256 */
2294 if (charcount
!= 256 && charcount
!= 512)
2297 size
= h
* pitch
* charcount
;
2299 new_data
= kmalloc(FONT_EXTRA_WORDS
* sizeof(int) + size
, GFP_USER
);
2304 new_data
+= FONT_EXTRA_WORDS
* sizeof(int);
2305 FNTSIZE(new_data
) = size
;
2306 FNTCHARCNT(new_data
) = charcount
;
2307 REFCOUNT(new_data
) = 0; /* usage counter */
2308 for (i
=0; i
< charcount
; i
++) {
2309 memcpy(new_data
+ i
*h
*pitch
, data
+ i
*32*pitch
, h
*pitch
);
2312 /* Since linux has a nice crc32 function use it for counting font
2314 csum
= crc32(0, new_data
, size
);
2316 FNTSUM(new_data
) = csum
;
2317 /* Check if the same font is on some other console already */
2318 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
2319 struct vc_data
*tmp
= vc_cons
[i
].d
;
2321 if (fb_display
[i
].userfont
&&
2322 fb_display
[i
].fontdata
&&
2323 FNTSUM(fb_display
[i
].fontdata
) == csum
&&
2324 FNTSIZE(fb_display
[i
].fontdata
) == size
&&
2325 tmp
->vc_font
.width
== w
&&
2326 !memcmp(fb_display
[i
].fontdata
, new_data
, size
)) {
2327 kfree(new_data
- FONT_EXTRA_WORDS
* sizeof(int));
2328 new_data
= fb_display
[i
].fontdata
;
2332 return fbcon_do_set_font(vc
, font
->width
, font
->height
, new_data
, 1);
2335 static int fbcon_set_def_font(struct vc_data
*vc
, struct console_font
*font
, char *name
)
2337 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
2338 struct font_desc
*f
;
2341 f
= get_default_font(info
->var
.xres
, info
->var
.yres
);
2342 else if (!(f
= find_font(name
)))
2345 font
->width
= f
->width
;
2346 font
->height
= f
->height
;
2347 return fbcon_do_set_font(vc
, f
->width
, f
->height
, f
->data
, 0);
2350 static u16 palette_red
[16];
2351 static u16 palette_green
[16];
2352 static u16 palette_blue
[16];
2354 static struct fb_cmap palette_cmap
= {
2355 0, 16, palette_red
, palette_green
, palette_blue
, NULL
2358 static int fbcon_set_palette(struct vc_data
*vc
, unsigned char *table
)
2360 struct fb_info
*info
= registered_fb
[con2fb_map
[vc
->vc_num
]];
2364 if (fbcon_is_inactive(vc
, info
))
2367 if (!CON_IS_VISIBLE(vc
))
2370 depth
= fb_get_color_depth(&info
->var
, &info
->fix
);
2372 for (i
= j
= 0; i
< 16; i
++) {
2374 val
= vc
->vc_palette
[j
++];
2375 palette_red
[k
] = (val
<< 8) | val
;
2376 val
= vc
->vc_palette
[j
++];
2377 palette_green
[k
] = (val
<< 8) | val
;
2378 val
= vc
->vc_palette
[j
++];
2379 palette_blue
[k
] = (val
<< 8) | val
;
2381 palette_cmap
.len
= 16;
2382 palette_cmap
.start
= 0;
2384 * If framebuffer is capable of less than 16 colors,
2385 * use default palette of fbcon.
2388 fb_copy_cmap(fb_default_cmap(1 << depth
), &palette_cmap
);
2390 return fb_set_cmap(&palette_cmap
, info
);
2393 static u16
*fbcon_screen_pos(struct vc_data
*vc
, int offset
)
2398 if (vc
->vc_num
!= fg_console
|| !softback_lines
)
2399 return (u16
*) (vc
->vc_origin
+ offset
);
2400 line
= offset
/ vc
->vc_size_row
;
2401 if (line
>= softback_lines
)
2402 return (u16
*) (vc
->vc_origin
+ offset
-
2403 softback_lines
* vc
->vc_size_row
);
2404 p
= softback_curr
+ offset
;
2405 if (p
>= softback_end
)
2406 p
+= softback_buf
- softback_end
;
2410 static unsigned long fbcon_getxy(struct vc_data
*vc
, unsigned long pos
,
2416 if (pos
>= vc
->vc_origin
&& pos
< vc
->vc_scr_end
) {
2417 unsigned long offset
= (pos
- vc
->vc_origin
) / 2;
2419 x
= offset
% vc
->vc_cols
;
2420 y
= offset
/ vc
->vc_cols
;
2421 if (vc
->vc_num
== fg_console
)
2422 y
+= softback_lines
;
2423 ret
= pos
+ (vc
->vc_cols
- x
) * 2;
2424 } else if (vc
->vc_num
== fg_console
&& softback_lines
) {
2425 unsigned long offset
= pos
- softback_curr
;
2427 if (pos
< softback_curr
)
2428 offset
+= softback_end
- softback_buf
;
2430 x
= offset
% vc
->vc_cols
;
2431 y
= offset
/ vc
->vc_cols
;
2432 ret
= pos
+ (vc
->vc_cols
- x
) * 2;
2433 if (ret
== softback_end
)
2435 if (ret
== softback_in
)
2436 ret
= vc
->vc_origin
;
2438 /* Should not happen */
2440 ret
= vc
->vc_origin
;
2449 /* As we might be inside of softback, we may work with non-contiguous buffer,
2450 that's why we have to use a separate routine. */
2451 static void fbcon_invert_region(struct vc_data
*vc
, u16
* p
, int cnt
)
2454 u16 a
= scr_readw(p
);
2455 if (!vc
->vc_can_do_color
)
2457 else if (vc
->vc_hi_font_mask
== 0x100)
2458 a
= ((a
) & 0x11ff) | (((a
) & 0xe000) >> 4) |
2459 (((a
) & 0x0e00) << 4);
2461 a
= ((a
) & 0x88ff) | (((a
) & 0x7000) >> 4) |
2462 (((a
) & 0x0700) << 4);
2464 if (p
== (u16
*) softback_end
)
2465 p
= (u16
*) softback_buf
;
2466 if (p
== (u16
*) softback_in
)
2467 p
= (u16
*) vc
->vc_origin
;
2471 static int fbcon_scrolldelta(struct vc_data
*vc
, int lines
)
2473 struct fb_info
*info
= registered_fb
[con2fb_map
[fg_console
]];
2474 struct display
*p
= &fb_display
[fg_console
];
2475 int offset
, limit
, scrollback_old
;
2478 if (vc
->vc_num
!= fg_console
)
2480 if (vc
->vc_mode
!= KD_TEXT
|| !lines
)
2482 if (logo_shown
>= 0) {
2483 struct vc_data
*conp2
= vc_cons
[logo_shown
].d
;
2485 if (conp2
->vc_top
== logo_lines
2486 && conp2
->vc_bottom
== conp2
->vc_rows
)
2488 if (logo_shown
== vc
->vc_num
) {
2494 logo_lines
* vc
->vc_size_row
;
2495 for (i
= 0; i
< logo_lines
; i
++) {
2496 if (p
== softback_top
)
2498 if (p
== softback_buf
)
2500 p
-= vc
->vc_size_row
;
2501 q
-= vc
->vc_size_row
;
2502 scr_memcpyw((u16
*) q
, (u16
*) p
,
2506 update_region(vc
, vc
->vc_origin
,
2507 logo_lines
* vc
->vc_cols
);
2509 logo_shown
= FBCON_LOGO_CANSHOW
;
2511 fbcon_cursor(vc
, CM_ERASE
| CM_SOFTBACK
);
2512 fbcon_redraw_softback(vc
, p
, lines
);
2513 fbcon_cursor(vc
, CM_DRAW
| CM_SOFTBACK
);
2517 if (!scrollback_phys_max
)
2520 scrollback_old
= scrollback_current
;
2521 scrollback_current
-= lines
;
2522 if (scrollback_current
< 0)
2523 scrollback_current
= 0;
2524 else if (scrollback_current
> scrollback_max
)
2525 scrollback_current
= scrollback_max
;
2526 if (scrollback_current
== scrollback_old
)
2529 if (fbcon_is_inactive(vc
, info
))
2532 fbcon_cursor(vc
, CM_ERASE
);
2534 offset
= p
->yscroll
- scrollback_current
;
2536 switch (p
->scrollmode
) {
2537 case SCROLL_WRAP_MOVE
:
2538 info
->var
.vmode
|= FB_VMODE_YWRAP
;
2540 case SCROLL_PAN_MOVE
:
2541 case SCROLL_PAN_REDRAW
:
2542 limit
-= vc
->vc_rows
;
2543 info
->var
.vmode
&= ~FB_VMODE_YWRAP
;
2548 else if (offset
>= limit
)
2550 info
->var
.xoffset
= 0;
2551 info
->var
.yoffset
= offset
* vc
->vc_font
.height
;
2552 update_var(vc
->vc_num
, info
);
2553 if (!scrollback_current
)
2554 fbcon_cursor(vc
, CM_DRAW
);
2558 static int fbcon_set_origin(struct vc_data
*vc
)
2561 fbcon_scrolldelta(vc
, softback_lines
);
2565 static void fbcon_suspended(struct fb_info
*info
)
2567 struct vc_data
*vc
= NULL
;
2568 struct fbcon_ops
*ops
= info
->fbcon_par
;
2570 if (!ops
|| ops
->currcon
< 0)
2572 vc
= vc_cons
[ops
->currcon
].d
;
2574 /* Clear cursor, restore saved data */
2575 fbcon_cursor(vc
, CM_ERASE
);
2578 static void fbcon_resumed(struct fb_info
*info
)
2581 struct fbcon_ops
*ops
= info
->fbcon_par
;
2583 if (!ops
|| ops
->currcon
< 0)
2585 vc
= vc_cons
[ops
->currcon
].d
;
2590 static void fbcon_modechanged(struct fb_info
*info
)
2592 struct fbcon_ops
*ops
= info
->fbcon_par
;
2597 if (!ops
|| ops
->currcon
< 0)
2599 vc
= vc_cons
[ops
->currcon
].d
;
2600 if (vc
->vc_mode
!= KD_TEXT
|| registered_fb
[con2fb_map
[ops
->currcon
]] != info
)
2603 p
= &fb_display
[vc
->vc_num
];
2605 info
->var
.xoffset
= info
->var
.yoffset
= p
->yscroll
= 0;
2607 if (CON_IS_VISIBLE(vc
)) {
2608 var_to_display(p
, &info
->var
, info
);
2609 cols
= info
->var
.xres
/ vc
->vc_font
.width
;
2610 rows
= info
->var
.yres
/ vc
->vc_font
.height
;
2611 vc_resize(vc
, cols
, rows
);
2612 updatescrollmode(p
, info
, vc
);
2614 scrollback_current
= 0;
2615 update_var(vc
->vc_num
, info
);
2616 fbcon_set_palette(vc
, color_table
);
2619 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
2621 softback_end
= softback_buf
+ l
* vc
->vc_size_row
;
2623 /* Smaller scrollback makes no sense, and 0
2624 would screw the operation totally */
2631 static void fbcon_set_all_vcs(struct fb_info
*info
)
2633 struct fbcon_ops
*ops
= info
->fbcon_par
;
2638 if (!ops
|| ops
->currcon
< 0)
2641 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
2643 if (!vc
|| vc
->vc_mode
!= KD_TEXT
||
2644 registered_fb
[con2fb_map
[i
]] != info
)
2647 p
= &fb_display
[vc
->vc_num
];
2649 info
->var
.xoffset
= info
->var
.yoffset
= p
->yscroll
= 0;
2650 var_to_display(p
, &info
->var
, info
);
2651 cols
= info
->var
.xres
/ vc
->vc_font
.width
;
2652 rows
= info
->var
.yres
/ vc
->vc_font
.height
;
2653 vc_resize(vc
, cols
, rows
);
2655 if (CON_IS_VISIBLE(vc
)) {
2656 updatescrollmode(p
, info
, vc
);
2658 scrollback_current
= 0;
2659 update_var(vc
->vc_num
, info
);
2660 fbcon_set_palette(vc
, color_table
);
2663 int l
= fbcon_softback_size
/ vc
->vc_size_row
;
2665 softback_end
= softback_buf
+ l
* vc
->vc_size_row
;
2667 /* Smaller scrollback makes no sense, and 0
2668 would screw the operation totally */
2676 static int fbcon_mode_deleted(struct fb_info
*info
,
2677 struct fb_videomode
*mode
)
2679 struct fb_info
*fb_info
;
2681 int i
, j
, found
= 0;
2683 /* before deletion, ensure that mode is not in use */
2684 for (i
= first_fb_vc
; i
<= last_fb_vc
; i
++) {
2688 fb_info
= registered_fb
[j
];
2689 if (fb_info
!= info
)
2694 if (fb_mode_is_equal(p
->mode
, mode
)) {
2702 static int fbcon_fb_registered(int idx
)
2706 if (info_idx
== -1) {
2707 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
2708 if (con2fb_map_boot
[i
] == idx
) {
2714 ret
= fbcon_takeover(1);
2716 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
2717 if (con2fb_map_boot
[i
] == idx
)
2718 set_con2fb_map(i
, idx
, 0);
2725 static void fbcon_fb_blanked(struct fb_info
*info
, int blank
)
2727 struct fbcon_ops
*ops
= info
->fbcon_par
;
2730 if (!ops
|| ops
->currcon
< 0)
2733 vc
= vc_cons
[ops
->currcon
].d
;
2734 if (vc
->vc_mode
!= KD_TEXT
||
2735 registered_fb
[con2fb_map
[ops
->currcon
]] != info
)
2738 if (CON_IS_VISIBLE(vc
)) {
2742 do_unblank_screen(0);
2744 ops
->blank_state
= blank
;
2747 static void fbcon_new_modelist(struct fb_info
*info
)
2751 struct fb_var_screeninfo var
;
2752 struct fb_videomode
*mode
;
2754 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
2755 if (registered_fb
[con2fb_map
[i
]] != info
)
2757 if (!fb_display
[i
].mode
)
2760 display_to_var(&var
, &fb_display
[i
]);
2761 mode
= fb_find_nearest_mode(&var
, &info
->modelist
);
2762 fb_videomode_to_var(&var
, mode
);
2765 fbcon_set_disp(info
, &var
, vc
);
2767 fbcon_preset_disp(info
, &var
, i
);
2772 static int fbcon_event_notify(struct notifier_block
*self
,
2773 unsigned long action
, void *data
)
2775 struct fb_event
*event
= data
;
2776 struct fb_info
*info
= event
->info
;
2777 struct fb_videomode
*mode
;
2778 struct fb_con2fbmap
*con2fb
;
2782 case FB_EVENT_SUSPEND
:
2783 fbcon_suspended(info
);
2785 case FB_EVENT_RESUME
:
2786 fbcon_resumed(info
);
2788 case FB_EVENT_MODE_CHANGE
:
2789 fbcon_modechanged(info
);
2791 case FB_EVENT_MODE_CHANGE_ALL
:
2792 fbcon_set_all_vcs(info
);
2794 case FB_EVENT_MODE_DELETE
:
2796 ret
= fbcon_mode_deleted(info
, mode
);
2798 case FB_EVENT_FB_REGISTERED
:
2799 ret
= fbcon_fb_registered(info
->node
);
2801 case FB_EVENT_SET_CONSOLE_MAP
:
2802 con2fb
= event
->data
;
2803 ret
= set_con2fb_map(con2fb
->console
- 1,
2804 con2fb
->framebuffer
, 1);
2806 case FB_EVENT_GET_CONSOLE_MAP
:
2807 con2fb
= event
->data
;
2808 con2fb
->framebuffer
= con2fb_map
[con2fb
->console
- 1];
2810 case FB_EVENT_BLANK
:
2811 fbcon_fb_blanked(info
, *(int *)event
->data
);
2813 case FB_EVENT_NEW_MODELIST
:
2814 fbcon_new_modelist(info
);
2822 * The console `switch' structure for the frame buffer based console
2825 static const struct consw fb_con
= {
2826 .owner
= THIS_MODULE
,
2827 .con_startup
= fbcon_startup
,
2828 .con_init
= fbcon_init
,
2829 .con_deinit
= fbcon_deinit
,
2830 .con_clear
= fbcon_clear
,
2831 .con_putc
= fbcon_putc
,
2832 .con_putcs
= fbcon_putcs
,
2833 .con_cursor
= fbcon_cursor
,
2834 .con_scroll
= fbcon_scroll
,
2835 .con_bmove
= fbcon_bmove
,
2836 .con_switch
= fbcon_switch
,
2837 .con_blank
= fbcon_blank
,
2838 .con_font_set
= fbcon_set_font
,
2839 .con_font_get
= fbcon_get_font
,
2840 .con_font_default
= fbcon_set_def_font
,
2841 .con_font_copy
= fbcon_copy_font
,
2842 .con_set_palette
= fbcon_set_palette
,
2843 .con_scrolldelta
= fbcon_scrolldelta
,
2844 .con_set_origin
= fbcon_set_origin
,
2845 .con_invert_region
= fbcon_invert_region
,
2846 .con_screen_pos
= fbcon_screen_pos
,
2847 .con_getxy
= fbcon_getxy
,
2848 .con_resize
= fbcon_resize
,
2851 static struct notifier_block fbcon_event_notifier
= {
2852 .notifier_call
= fbcon_event_notify
,
2855 static int __init
fb_console_init(void)
2859 acquire_console_sem();
2860 fb_register_client(&fbcon_event_notifier
);
2861 release_console_sem();
2863 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++)
2866 if (num_registered_fb
) {
2867 for (i
= 0; i
< FB_MAX
; i
++) {
2868 if (registered_fb
[i
] != NULL
) {
2879 module_init(fb_console_init
);
2883 static void __exit
fb_console_exit(void)
2885 acquire_console_sem();
2886 fb_unregister_client(&fbcon_event_notifier
);
2887 release_console_sem();
2888 give_up_console(&fb_con
);
2891 module_exit(fb_console_exit
);
2895 MODULE_LICENSE("GPL");