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/module.h>
62 #include <linux/types.h>
64 #include <linux/kernel.h>
65 #include <linux/delay.h> /* MSch: for IRQ probe */
66 #include <linux/console.h>
67 #include <linux/string.h>
69 #include <linux/slab.h>
71 #include <linux/fbcon.h>
72 #include <linux/vt_kern.h>
73 #include <linux/selection.h>
74 #include <linux/font.h>
75 #include <linux/smp.h>
76 #include <linux/init.h>
77 #include <linux/interrupt.h>
78 #include <linux/crc32.h> /* For counting font checksums */
79 #include <linux/uaccess.h>
86 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
88 # define DPRINTK(fmt, args...)
94 * - fbcon state itself is protected by the console_lock, and the code does a
95 * pretty good job at making sure that lock is held everywhere it's needed.
97 * - access to the registered_fb array is entirely unprotected. This should use
98 * proper object lifetime handling, i.e. get/put_fb_info. This also means
99 * switching from indices to proper pointers for fb_info everywhere.
101 * - fbcon doesn't bother with fb_lock/unlock at all. This is buggy, since it
102 * means concurrent access to the same fbdev from both fbcon and userspace
103 * will blow up. To fix this all fbcon calls from fbmem.c need to be moved out
104 * of fb_lock/unlock protected sections, since otherwise we'll recurse and
105 * deadlock eventually. Aside: Due to these deadlock issues the fbdev code in
106 * fbmem.c cannot use locking asserts, and there's lots of callers which get
107 * the rules wrong, e.g. fbsysfs.c entirely missed fb_lock/unlock calls too.
111 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
112 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
113 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */
116 static struct fbcon_display fb_display[MAX_NR_CONSOLES];
118 static signed char con2fb_map[MAX_NR_CONSOLES];
119 static signed char con2fb_map_boot[MAX_NR_CONSOLES];
121 static int logo_lines;
122 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
124 static int logo_shown = FBCON_LOGO_CANSHOW;
125 /* Software scrollback */
126 static int fbcon_softback_size = 32768;
127 static unsigned long softback_buf, softback_curr;
128 static unsigned long softback_in;
129 static unsigned long softback_top, softback_end;
130 static int softback_lines;
131 /* console mappings */
132 static int first_fb_vc;
133 static int last_fb_vc = MAX_NR_CONSOLES - 1;
134 static int fbcon_is_default = 1;
135 static int primary_device = -1;
136 static int fbcon_has_console_bind;
138 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
139 static int map_override;
141 static inline void fbcon_map_override(void)
146 static inline void fbcon_map_override(void)
149 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */
151 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
152 static bool deferred_takeover = true;
154 #define deferred_takeover false
158 static char fontname[40];
160 /* current fb_info */
161 static int info_idx = -1;
163 /* console rotation */
164 static int initial_rotation = -1;
165 static int fbcon_has_sysfs;
166 static int margin_color;
168 static const struct consw fb_con;
170 #define CM_SOFTBACK (8)
172 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
174 static int fbcon_set_origin(struct vc_data *);
176 static int fbcon_cursor_noblink;
178 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
181 * Interface used by the world
184 static const char *fbcon_startup(void);
185 static void fbcon_init(struct vc_data *vc, int init);
186 static void fbcon_deinit(struct vc_data *vc);
187 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
189 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
190 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
191 int count, int ypos, int xpos);
192 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
193 static void fbcon_cursor(struct vc_data *vc, int mode);
194 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
195 int height, int width);
196 static int fbcon_switch(struct vc_data *vc);
197 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
198 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table);
203 static __inline__ void ywrap_up(struct vc_data *vc, int count);
204 static __inline__ void ywrap_down(struct vc_data *vc, int count);
205 static __inline__ void ypan_up(struct vc_data *vc, int count);
206 static __inline__ void ypan_down(struct vc_data *vc, int count);
207 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx,
208 int dy, int dx, int height, int width, u_int y_break);
209 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
211 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
212 int line, int count, int dy);
213 static void fbcon_modechanged(struct fb_info *info);
214 static void fbcon_set_all_vcs(struct fb_info *info);
215 static void fbcon_start(void);
216 static void fbcon_exit(void);
217 static struct device *fbcon_device;
219 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
220 static inline void fbcon_set_rotation(struct fb_info *info)
222 struct fbcon_ops *ops = info->fbcon_par;
224 if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
225 ops->p->con_rotate < 4)
226 ops->rotate = ops->p->con_rotate;
231 static void fbcon_rotate(struct fb_info *info, u32 rotate)
233 struct fbcon_ops *ops= info->fbcon_par;
234 struct fb_info *fb_info;
236 if (!ops || ops->currcon == -1)
239 fb_info = registered_fb[con2fb_map[ops->currcon]];
241 if (info == fb_info) {
242 struct fbcon_display *p = &fb_display[ops->currcon];
245 p->con_rotate = rotate;
249 fbcon_modechanged(info);
253 static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
255 struct fbcon_ops *ops = info->fbcon_par;
257 struct fbcon_display *p;
260 if (!ops || ops->currcon < 0 || rotate > 3)
263 for (i = first_fb_vc; i <= last_fb_vc; i++) {
265 if (!vc || vc->vc_mode != KD_TEXT ||
266 registered_fb[con2fb_map[i]] != info)
269 p = &fb_display[vc->vc_num];
270 p->con_rotate = rotate;
273 fbcon_set_all_vcs(info);
276 static inline void fbcon_set_rotation(struct fb_info *info)
278 struct fbcon_ops *ops = info->fbcon_par;
280 ops->rotate = FB_ROTATE_UR;
283 static void fbcon_rotate(struct fb_info *info, u32 rotate)
288 static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
292 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
294 static int fbcon_get_rotate(struct fb_info *info)
296 struct fbcon_ops *ops = info->fbcon_par;
298 return (ops) ? ops->rotate : 0;
301 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
303 struct fbcon_ops *ops = info->fbcon_par;
305 return (info->state != FBINFO_STATE_RUNNING ||
306 vc->vc_mode != KD_TEXT || ops->graphics);
309 static int get_color(struct vc_data *vc, struct fb_info *info,
312 int depth = fb_get_color_depth(&info->var, &info->fix);
315 if (console_blanked) {
316 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
318 c = vc->vc_video_erase_char & charmask;
322 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
323 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
328 int col = mono_col(info);
330 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
331 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
336 color = (is_fg) ? fg : bg;
341 * Scale down 16-colors to 4 colors. Default 4-color palette
342 * is grayscale. However, simply dividing the values by 4
343 * will not work, as colors 1, 2 and 3 will be scaled-down
344 * to zero rendering them invisible. So empirically convert
345 * colors to a sane 4-level grayscale.
349 color = 0; /* black */
352 color = 2; /* white */
355 color = 1; /* gray */
358 color = 3; /* intense white */
364 * Last 8 entries of default 16-color palette is a more intense
365 * version of the first 8 (i.e., same chrominance, different
376 static void fbcon_update_softback(struct vc_data *vc)
378 int l = fbcon_softback_size / vc->vc_size_row;
381 softback_end = softback_buf + l * vc->vc_size_row;
383 /* Smaller scrollback makes no sense, and 0 would screw
384 the operation totally */
388 static void fb_flashcursor(struct work_struct *work)
390 struct fb_info *info = container_of(work, struct fb_info, queue);
391 struct fbcon_ops *ops = info->fbcon_par;
392 struct vc_data *vc = NULL;
397 /* FIXME: we should sort out the unbind locking instead */
398 /* instead we just fail to flash the cursor if we can't get
399 * the lock instead of blocking fbcon deinit */
400 ret = console_trylock();
404 if (ops && ops->currcon != -1)
405 vc = vc_cons[ops->currcon].d;
407 if (!vc || !con_is_visible(vc) ||
408 registered_fb[con2fb_map[vc->vc_num]] != info ||
414 c = scr_readw((u16 *) vc->vc_pos);
415 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
417 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
418 get_color(vc, info, c, 0));
422 static void cursor_timer_handler(struct timer_list *t)
424 struct fbcon_ops *ops = from_timer(ops, t, cursor_timer);
425 struct fb_info *info = ops->info;
427 queue_work(system_power_efficient_wq, &info->queue);
428 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
431 static void fbcon_add_cursor_timer(struct fb_info *info)
433 struct fbcon_ops *ops = info->fbcon_par;
435 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
436 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
437 !fbcon_cursor_noblink) {
438 if (!info->queue.func)
439 INIT_WORK(&info->queue, fb_flashcursor);
441 timer_setup(&ops->cursor_timer, cursor_timer_handler, 0);
442 mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
443 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
447 static void fbcon_del_cursor_timer(struct fb_info *info)
449 struct fbcon_ops *ops = info->fbcon_par;
451 if (info->queue.func == fb_flashcursor &&
452 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
453 del_timer_sync(&ops->cursor_timer);
454 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
459 static int __init fb_console_setup(char *this_opt)
464 if (!this_opt || !*this_opt)
467 while ((options = strsep(&this_opt, ",")) != NULL) {
468 if (!strncmp(options, "font:", 5)) {
469 strlcpy(fontname, options + 5, sizeof(fontname));
473 if (!strncmp(options, "scrollback:", 11)) {
476 fbcon_softback_size = simple_strtoul(options, &options, 0);
477 if (*options == 'k' || *options == 'K') {
478 fbcon_softback_size *= 1024;
484 if (!strncmp(options, "map:", 4)) {
487 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
491 (options[j++]-'0') % FB_MAX;
494 fbcon_map_override();
499 if (!strncmp(options, "vc:", 3)) {
502 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
505 if (*options++ == '-')
506 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
507 fbcon_is_default = 0;
511 if (!strncmp(options, "rotate:", 7)) {
514 initial_rotation = simple_strtoul(options, &options, 0);
515 if (initial_rotation > 3)
516 initial_rotation = 0;
520 if (!strncmp(options, "margin:", 7)) {
523 margin_color = simple_strtoul(options, &options, 0);
526 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
527 if (!strcmp(options, "nodefer")) {
528 deferred_takeover = false;
533 if (!strncmp(options, "logo-pos:", 9)) {
535 if (!strcmp(options, "center"))
536 fb_center_logo = true;
540 if (!strncmp(options, "logo-count:", 11)) {
543 fb_logo_count = simple_strtol(options, &options, 0);
550 __setup("fbcon=", fb_console_setup);
553 static int search_fb_in_map(int idx)
557 for (i = first_fb_vc; i <= last_fb_vc; i++) {
558 if (con2fb_map[i] == idx)
564 static int search_for_mapped_con(void)
568 for (i = first_fb_vc; i <= last_fb_vc; i++) {
569 if (con2fb_map[i] != -1)
575 static int do_fbcon_takeover(int show_logo)
579 if (!num_registered_fb)
583 logo_shown = FBCON_LOGO_DONTSHOW;
585 for (i = first_fb_vc; i <= last_fb_vc; i++)
586 con2fb_map[i] = info_idx;
588 err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc,
592 for (i = first_fb_vc; i <= last_fb_vc; i++)
596 fbcon_has_console_bind = 1;
603 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
604 int cols, int rows, int new_cols, int new_rows)
606 logo_shown = FBCON_LOGO_DONTSHOW;
609 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
610 int cols, int rows, int new_cols, int new_rows)
612 /* Need to make room for the logo */
613 struct fbcon_ops *ops = info->fbcon_par;
614 int cnt, erase = vc->vc_video_erase_char, step;
615 unsigned short *save = NULL, *r, *q;
618 if (info->fbops->owner) {
619 logo_shown = FBCON_LOGO_DONTSHOW;
624 * remove underline attribute from erase character
625 * if black and white framebuffer.
627 if (fb_get_color_depth(&info->var, &info->fix) == 1)
629 logo_height = fb_prepare_logo(info, ops->rotate);
630 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);
631 q = (unsigned short *) (vc->vc_origin +
632 vc->vc_size_row * rows);
633 step = logo_lines * cols;
634 for (r = q - logo_lines * cols; r < q; r++)
635 if (scr_readw(r) != vc->vc_video_erase_char)
637 if (r != q && new_rows >= rows + logo_lines) {
638 save = kmalloc(array3_size(logo_lines, new_cols, 2),
641 int i = cols < new_cols ? cols : new_cols;
642 scr_memsetw(save, erase, array3_size(logo_lines, new_cols, 2));
644 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
645 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
650 /* We can scroll screen down */
652 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
653 scr_memcpyw(r + step, r, vc->vc_size_row);
658 if (vc->state.y + logo_lines >= rows)
659 lines = rows - vc->state.y - 1;
662 vc->state.y += lines;
663 vc->vc_pos += lines * vc->vc_size_row;
666 scr_memsetw((unsigned short *) vc->vc_origin,
668 vc->vc_size_row * logo_lines);
670 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) {
671 fbcon_clear_margins(vc, 0);
676 q = (unsigned short *) (vc->vc_origin +
679 scr_memcpyw(q, save, array3_size(logo_lines, new_cols, 2));
680 vc->state.y += logo_lines;
681 vc->vc_pos += logo_lines * vc->vc_size_row;
685 if (logo_shown == FBCON_LOGO_DONTSHOW)
688 if (logo_lines > vc->vc_bottom) {
689 logo_shown = FBCON_LOGO_CANSHOW;
691 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
693 logo_shown = FBCON_LOGO_DRAW;
694 vc->vc_top = logo_lines;
699 #ifdef CONFIG_FB_TILEBLITTING
700 static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
702 struct fbcon_ops *ops = info->fbcon_par;
704 ops->p = &fb_display[vc->vc_num];
706 if ((info->flags & FBINFO_MISC_TILEBLITTING))
707 fbcon_set_tileops(vc, info);
709 fbcon_set_rotation(info);
710 fbcon_set_bitops(ops);
714 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
718 if (info->flags & FBINFO_MISC_TILEBLITTING &&
719 info->tileops->fb_get_tilemax(info) < charcount)
725 static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
727 struct fbcon_ops *ops = info->fbcon_par;
729 info->flags &= ~FBINFO_MISC_TILEBLITTING;
730 ops->p = &fb_display[vc->vc_num];
731 fbcon_set_rotation(info);
732 fbcon_set_bitops(ops);
735 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
740 #endif /* CONFIG_MISC_TILEBLITTING */
743 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
744 int unit, int oldidx)
746 struct fbcon_ops *ops = NULL;
749 if (!try_module_get(info->fbops->owner))
752 if (!err && info->fbops->fb_open &&
753 info->fbops->fb_open(info, 0))
757 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
763 ops->cur_blink_jiffies = HZ / 5;
765 info->fbcon_par = ops;
768 set_blitting_type(vc, info);
772 con2fb_map[unit] = oldidx;
773 module_put(info->fbops->owner);
779 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
780 struct fb_info *newinfo, int unit,
781 int oldidx, int found)
783 struct fbcon_ops *ops = oldinfo->fbcon_par;
786 if (oldinfo->fbops->fb_release &&
787 oldinfo->fbops->fb_release(oldinfo, 0)) {
788 con2fb_map[unit] = oldidx;
789 if (!found && newinfo->fbops->fb_release)
790 newinfo->fbops->fb_release(newinfo, 0);
792 module_put(newinfo->fbops->owner);
797 fbcon_del_cursor_timer(oldinfo);
798 kfree(ops->cursor_state.mask);
799 kfree(ops->cursor_data);
800 kfree(ops->cursor_src);
801 kfree(ops->fontbuffer);
802 kfree(oldinfo->fbcon_par);
803 oldinfo->fbcon_par = NULL;
804 module_put(oldinfo->fbops->owner);
806 If oldinfo and newinfo are driving the same hardware,
807 the fb_release() method of oldinfo may attempt to
808 restore the hardware state. This will leave the
809 newinfo in an undefined state. Thus, a call to
810 fb_set_par() may be needed for the newinfo.
812 if (newinfo && newinfo->fbops->fb_set_par) {
813 ret = newinfo->fbops->fb_set_par(newinfo);
816 printk(KERN_ERR "con2fb_release_oldinfo: "
817 "detected unhandled fb_set_par error, "
818 "error code %d\n", ret);
825 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
826 int unit, int show_logo)
828 struct fbcon_ops *ops = info->fbcon_par;
831 ops->currcon = fg_console;
833 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) {
834 ret = info->fbops->fb_set_par(info);
837 printk(KERN_ERR "con2fb_init_display: detected "
838 "unhandled fb_set_par error, "
839 "error code %d\n", ret);
842 ops->flags |= FBCON_FLAGS_INIT;
844 fbcon_set_disp(info, &info->var, unit);
847 struct vc_data *fg_vc = vc_cons[fg_console].d;
848 struct fb_info *fg_info =
849 registered_fb[con2fb_map[fg_console]];
851 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
852 fg_vc->vc_rows, fg_vc->vc_cols,
856 update_screen(vc_cons[fg_console].d);
860 * set_con2fb_map - map console to frame buffer device
861 * @unit: virtual console number to map
862 * @newidx: frame buffer index to map virtual console to
863 * @user: user request
865 * Maps a virtual console @unit to a frame buffer device
868 * This should be called with the console lock held.
870 static int set_con2fb_map(int unit, int newidx, int user)
872 struct vc_data *vc = vc_cons[unit].d;
873 int oldidx = con2fb_map[unit];
874 struct fb_info *info = registered_fb[newidx];
875 struct fb_info *oldinfo = NULL;
878 WARN_CONSOLE_UNLOCKED();
880 if (oldidx == newidx)
886 if (!search_for_mapped_con() || !con_is_bound(&fb_con)) {
888 return do_fbcon_takeover(0);
892 oldinfo = registered_fb[oldidx];
894 found = search_fb_in_map(newidx);
896 con2fb_map[unit] = newidx;
898 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
901 * If old fb is not mapped to any of the consoles,
902 * fbcon should release it.
904 if (!err && oldinfo && !search_fb_in_map(oldidx))
905 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
909 int show_logo = (fg_console == 0 && !user &&
910 logo_shown != FBCON_LOGO_DONTSHOW);
913 fbcon_add_cursor_timer(info);
914 con2fb_map_boot[unit] = newidx;
915 con2fb_init_display(vc, info, unit, show_logo);
918 if (!search_fb_in_map(info_idx))
925 * Low Level Operations
927 /* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */
928 static int var_to_display(struct fbcon_display *disp,
929 struct fb_var_screeninfo *var,
930 struct fb_info *info)
932 disp->xres_virtual = var->xres_virtual;
933 disp->yres_virtual = var->yres_virtual;
934 disp->bits_per_pixel = var->bits_per_pixel;
935 disp->grayscale = var->grayscale;
936 disp->nonstd = var->nonstd;
937 disp->accel_flags = var->accel_flags;
938 disp->height = var->height;
939 disp->width = var->width;
940 disp->red = var->red;
941 disp->green = var->green;
942 disp->blue = var->blue;
943 disp->transp = var->transp;
944 disp->rotate = var->rotate;
945 disp->mode = fb_match_mode(var, &info->modelist);
946 if (disp->mode == NULL)
947 /* This should not happen */
952 static void display_to_var(struct fb_var_screeninfo *var,
953 struct fbcon_display *disp)
955 fb_videomode_to_var(var, disp->mode);
956 var->xres_virtual = disp->xres_virtual;
957 var->yres_virtual = disp->yres_virtual;
958 var->bits_per_pixel = disp->bits_per_pixel;
959 var->grayscale = disp->grayscale;
960 var->nonstd = disp->nonstd;
961 var->accel_flags = disp->accel_flags;
962 var->height = disp->height;
963 var->width = disp->width;
964 var->red = disp->red;
965 var->green = disp->green;
966 var->blue = disp->blue;
967 var->transp = disp->transp;
968 var->rotate = disp->rotate;
971 static const char *fbcon_startup(void)
973 const char *display_desc = "frame buffer device";
974 struct fbcon_display *p = &fb_display[fg_console];
975 struct vc_data *vc = vc_cons[fg_console].d;
976 const struct font_desc *font = NULL;
977 struct module *owner;
978 struct fb_info *info = NULL;
979 struct fbcon_ops *ops;
983 * If num_registered_fb is zero, this is a call for the dummy part.
984 * The frame buffer devices weren't initialized yet.
986 if (!num_registered_fb || info_idx == -1)
989 * Instead of blindly using registered_fb[0], we use info_idx, set by
992 info = registered_fb[info_idx];
996 owner = info->fbops->owner;
997 if (!try_module_get(owner))
999 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
1004 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
1012 ops->cur_rotate = -1;
1013 ops->cur_blink_jiffies = HZ / 5;
1015 info->fbcon_par = ops;
1017 p->con_rotate = initial_rotation;
1018 if (p->con_rotate == -1)
1019 p->con_rotate = info->fbcon_rotate_hint;
1020 if (p->con_rotate == -1)
1021 p->con_rotate = FB_ROTATE_UR;
1023 set_blitting_type(vc, info);
1025 if (info->fix.type != FB_TYPE_TEXT) {
1026 if (fbcon_softback_size) {
1027 if (!softback_buf) {
1030 kvmalloc(fbcon_softback_size,
1032 if (!softback_buf) {
1033 fbcon_softback_size = 0;
1039 kvfree((void *) softback_buf);
1045 softback_in = softback_top = softback_curr =
1050 /* Setup default font */
1051 if (!p->fontdata && !vc->vc_font.data) {
1052 if (!fontname[0] || !(font = find_font(fontname)))
1053 font = get_default_font(info->var.xres,
1055 info->pixmap.blit_x,
1056 info->pixmap.blit_y);
1057 vc->vc_font.width = font->width;
1058 vc->vc_font.height = font->height;
1059 vc->vc_font.data = (void *)(p->fontdata = font->data);
1060 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
1062 p->fontdata = vc->vc_font.data;
1065 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1066 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1067 cols /= vc->vc_font.width;
1068 rows /= vc->vc_font.height;
1069 vc_resize(vc, cols, rows);
1071 DPRINTK("mode: %s\n", info->fix.id);
1072 DPRINTK("visual: %d\n", info->fix.visual);
1073 DPRINTK("res: %dx%d-%d\n", info->var.xres,
1075 info->var.bits_per_pixel);
1077 fbcon_add_cursor_timer(info);
1078 return display_desc;
1081 static void fbcon_init(struct vc_data *vc, int init)
1083 struct fb_info *info;
1084 struct fbcon_ops *ops;
1085 struct vc_data **default_mode = vc->vc_display_fg;
1086 struct vc_data *svc = *default_mode;
1087 struct fbcon_display *t, *p = &fb_display[vc->vc_num];
1088 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
1091 if (WARN_ON(info_idx == -1))
1094 if (con2fb_map[vc->vc_num] == -1)
1095 con2fb_map[vc->vc_num] = info_idx;
1097 info = registered_fb[con2fb_map[vc->vc_num]];
1100 if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET)
1101 logo_shown = FBCON_LOGO_DONTSHOW;
1103 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1104 (info->fix.type == FB_TYPE_TEXT))
1107 if (var_to_display(p, &info->var, info))
1110 if (!info->fbcon_par)
1111 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
1113 /* If we are not the first console on this
1114 fb, copy the font from that console */
1115 t = &fb_display[fg_console];
1118 struct vc_data *fvc = vc_cons[fg_console].d;
1120 vc->vc_font.data = (void *)(p->fontdata =
1122 vc->vc_font.width = fvc->vc_font.width;
1123 vc->vc_font.height = fvc->vc_font.height;
1124 p->userfont = t->userfont;
1127 REFCOUNT(p->fontdata)++;
1129 const struct font_desc *font = NULL;
1131 if (!fontname[0] || !(font = find_font(fontname)))
1132 font = get_default_font(info->var.xres,
1134 info->pixmap.blit_x,
1135 info->pixmap.blit_y);
1136 vc->vc_font.width = font->width;
1137 vc->vc_font.height = font->height;
1138 vc->vc_font.data = (void *)(p->fontdata = font->data);
1139 vc->vc_font.charcount = 256; /* FIXME Need to
1140 support more fonts */
1145 charcnt = FNTCHARCNT(p->fontdata);
1147 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1148 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1149 if (charcnt == 256) {
1150 vc->vc_hi_font_mask = 0;
1152 vc->vc_hi_font_mask = 0x100;
1153 if (vc->vc_can_do_color)
1154 vc->vc_complement_mask <<= 1;
1157 if (!*svc->vc_uni_pagedir_loc)
1158 con_set_default_unimap(svc);
1159 if (!*vc->vc_uni_pagedir_loc)
1160 con_copy_unimap(vc, svc);
1162 ops = info->fbcon_par;
1163 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
1165 p->con_rotate = initial_rotation;
1166 if (p->con_rotate == -1)
1167 p->con_rotate = info->fbcon_rotate_hint;
1168 if (p->con_rotate == -1)
1169 p->con_rotate = FB_ROTATE_UR;
1171 set_blitting_type(vc, info);
1175 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1176 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1177 new_cols /= vc->vc_font.width;
1178 new_rows /= vc->vc_font.height;
1181 * We must always set the mode. The mode of the previous console
1182 * driver could be in the same resolution but we are using different
1183 * hardware so we have to initialize the hardware.
1185 * We need to do it in fbcon_init() to prevent screen corruption.
1187 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) {
1188 if (info->fbops->fb_set_par &&
1189 !(ops->flags & FBCON_FLAGS_INIT)) {
1190 ret = info->fbops->fb_set_par(info);
1193 printk(KERN_ERR "fbcon_init: detected "
1194 "unhandled fb_set_par error, "
1195 "error code %d\n", ret);
1198 ops->flags |= FBCON_FLAGS_INIT;
1203 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1204 !(cap & FBINFO_HWACCEL_DISABLED))
1205 p->scrollmode = SCROLL_MOVE;
1206 else /* default to something safe */
1207 p->scrollmode = SCROLL_REDRAW;
1210 * ++guenther: console.c:vc_allocate() relies on initializing
1211 * vc_{cols,rows}, but we must not set those if we are only
1212 * resizing the console.
1215 vc->vc_cols = new_cols;
1216 vc->vc_rows = new_rows;
1218 vc_resize(vc, new_cols, new_rows);
1221 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1223 if (vc == svc && softback_buf)
1224 fbcon_update_softback(vc);
1226 if (ops->rotate_font && ops->rotate_font(info, vc)) {
1227 ops->rotate = FB_ROTATE_UR;
1228 set_blitting_type(vc, info);
1231 ops->p = &fb_display[fg_console];
1234 static void fbcon_free_font(struct fbcon_display *p, bool freefont)
1236 if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
1237 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1242 static void set_vc_hi_font(struct vc_data *vc, bool set);
1244 static void fbcon_deinit(struct vc_data *vc)
1246 struct fbcon_display *p = &fb_display[vc->vc_num];
1247 struct fb_info *info;
1248 struct fbcon_ops *ops;
1250 bool free_font = true;
1252 idx = con2fb_map[vc->vc_num];
1257 info = registered_fb[idx];
1262 if (info->flags & FBINFO_MISC_FIRMWARE)
1264 ops = info->fbcon_par;
1269 if (con_is_visible(vc))
1270 fbcon_del_cursor_timer(info);
1272 ops->flags &= ~FBCON_FLAGS_INIT;
1275 fbcon_free_font(p, free_font);
1277 vc->vc_font.data = NULL;
1279 if (vc->vc_hi_font_mask && vc->vc_screenbuf)
1280 set_vc_hi_font(vc, false);
1282 if (!con_is_bound(&fb_con))
1285 if (vc->vc_num == logo_shown)
1286 logo_shown = FBCON_LOGO_CANSHOW;
1291 /* ====================================================================== */
1293 /* fbcon_XXX routines - interface used by the world
1295 * This system is now divided into two levels because of complications
1296 * caused by hardware scrolling. Top level functions:
1298 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1300 * handles y values in range [0, scr_height-1] that correspond to real
1301 * screen positions. y_wrap shift means that first line of bitmap may be
1302 * anywhere on this display. These functions convert lineoffsets to
1303 * bitmap offsets and deal with the wrap-around case by splitting blits.
1305 * fbcon_bmove_physical_8() -- These functions fast implementations
1306 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1307 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1311 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1312 * Implies should only really hardware scroll in rows. Only reason for
1313 * restriction is simplicity & efficiency at the moment.
1316 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1319 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1320 struct fbcon_ops *ops = info->fbcon_par;
1322 struct fbcon_display *p = &fb_display[vc->vc_num];
1325 if (fbcon_is_inactive(vc, info))
1328 if (!height || !width)
1331 if (sy < vc->vc_top && vc->vc_top == logo_lines) {
1334 * If the font dimensions are not an integral of the display
1335 * dimensions then the ops->clear below won't end up clearing
1336 * the margins. Call clear_margins here in case the logo
1337 * bitmap stretched into the margin area.
1339 fbcon_clear_margins(vc, 0);
1342 /* Split blits that cross physical y_wrap boundary */
1344 y_break = p->vrows - p->yscroll;
1345 if (sy < y_break && sy + height - 1 >= y_break) {
1346 u_int b = y_break - sy;
1347 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1348 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1351 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1354 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1355 int count, int ypos, int xpos)
1357 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1358 struct fbcon_display *p = &fb_display[vc->vc_num];
1359 struct fbcon_ops *ops = info->fbcon_par;
1361 if (!fbcon_is_inactive(vc, info))
1362 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1363 get_color(vc, info, scr_readw(s), 1),
1364 get_color(vc, info, scr_readw(s), 0));
1367 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1371 scr_writew(c, &chr);
1372 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1375 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1377 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1378 struct fbcon_ops *ops = info->fbcon_par;
1380 if (!fbcon_is_inactive(vc, info))
1381 ops->clear_margins(vc, info, margin_color, bottom_only);
1384 static void fbcon_cursor(struct vc_data *vc, int mode)
1386 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1387 struct fbcon_ops *ops = info->fbcon_par;
1389 int c = scr_readw((u16 *) vc->vc_pos);
1391 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
1393 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1396 if (vc->vc_cursor_type & CUR_SW)
1397 fbcon_del_cursor_timer(info);
1399 fbcon_add_cursor_timer(info);
1401 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1402 if (mode & CM_SOFTBACK) {
1403 mode &= ~CM_SOFTBACK;
1407 fbcon_set_origin(vc);
1411 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1412 get_color(vc, info, c, 0));
1415 static int scrollback_phys_max = 0;
1416 static int scrollback_max = 0;
1417 static int scrollback_current = 0;
1419 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1422 struct fbcon_display *p, *t;
1423 struct vc_data **default_mode, *vc;
1424 struct vc_data *svc;
1425 struct fbcon_ops *ops = info->fbcon_par;
1426 int rows, cols, charcnt = 256;
1428 p = &fb_display[unit];
1430 if (var_to_display(p, var, info))
1433 vc = vc_cons[unit].d;
1438 default_mode = vc->vc_display_fg;
1439 svc = *default_mode;
1440 t = &fb_display[svc->vc_num];
1442 if (!vc->vc_font.data) {
1443 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1444 vc->vc_font.width = (*default_mode)->vc_font.width;
1445 vc->vc_font.height = (*default_mode)->vc_font.height;
1446 p->userfont = t->userfont;
1448 REFCOUNT(p->fontdata)++;
1451 charcnt = FNTCHARCNT(p->fontdata);
1453 var->activate = FB_ACTIVATE_NOW;
1454 info->var.activate = var->activate;
1455 var->yoffset = info->var.yoffset;
1456 var->xoffset = info->var.xoffset;
1457 fb_set_var(info, var);
1458 ops->var = info->var;
1459 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1460 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1461 if (charcnt == 256) {
1462 vc->vc_hi_font_mask = 0;
1464 vc->vc_hi_font_mask = 0x100;
1465 if (vc->vc_can_do_color)
1466 vc->vc_complement_mask <<= 1;
1469 if (!*svc->vc_uni_pagedir_loc)
1470 con_set_default_unimap(svc);
1471 if (!*vc->vc_uni_pagedir_loc)
1472 con_copy_unimap(vc, svc);
1474 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1475 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1476 cols /= vc->vc_font.width;
1477 rows /= vc->vc_font.height;
1478 vc_resize(vc, cols, rows);
1480 if (con_is_visible(vc)) {
1483 fbcon_update_softback(vc);
1487 static __inline__ void ywrap_up(struct vc_data *vc, int count)
1489 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1490 struct fbcon_ops *ops = info->fbcon_par;
1491 struct fbcon_display *p = &fb_display[vc->vc_num];
1493 p->yscroll += count;
1494 if (p->yscroll >= p->vrows) /* Deal with wrap */
1495 p->yscroll -= p->vrows;
1496 ops->var.xoffset = 0;
1497 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1498 ops->var.vmode |= FB_VMODE_YWRAP;
1499 ops->update_start(info);
1500 scrollback_max += count;
1501 if (scrollback_max > scrollback_phys_max)
1502 scrollback_max = scrollback_phys_max;
1503 scrollback_current = 0;
1506 static __inline__ void ywrap_down(struct vc_data *vc, int count)
1508 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1509 struct fbcon_ops *ops = info->fbcon_par;
1510 struct fbcon_display *p = &fb_display[vc->vc_num];
1512 p->yscroll -= count;
1513 if (p->yscroll < 0) /* Deal with wrap */
1514 p->yscroll += p->vrows;
1515 ops->var.xoffset = 0;
1516 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1517 ops->var.vmode |= FB_VMODE_YWRAP;
1518 ops->update_start(info);
1519 scrollback_max -= count;
1520 if (scrollback_max < 0)
1522 scrollback_current = 0;
1525 static __inline__ void ypan_up(struct vc_data *vc, int count)
1527 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1528 struct fbcon_display *p = &fb_display[vc->vc_num];
1529 struct fbcon_ops *ops = info->fbcon_par;
1531 p->yscroll += count;
1532 if (p->yscroll > p->vrows - vc->vc_rows) {
1533 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1534 0, 0, 0, vc->vc_rows, vc->vc_cols);
1535 p->yscroll -= p->vrows - vc->vc_rows;
1538 ops->var.xoffset = 0;
1539 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1540 ops->var.vmode &= ~FB_VMODE_YWRAP;
1541 ops->update_start(info);
1542 fbcon_clear_margins(vc, 1);
1543 scrollback_max += count;
1544 if (scrollback_max > scrollback_phys_max)
1545 scrollback_max = scrollback_phys_max;
1546 scrollback_current = 0;
1549 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1551 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1552 struct fbcon_ops *ops = info->fbcon_par;
1553 struct fbcon_display *p = &fb_display[vc->vc_num];
1555 p->yscroll += count;
1557 if (p->yscroll > p->vrows - vc->vc_rows) {
1558 p->yscroll -= p->vrows - vc->vc_rows;
1559 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1562 ops->var.xoffset = 0;
1563 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1564 ops->var.vmode &= ~FB_VMODE_YWRAP;
1565 ops->update_start(info);
1566 fbcon_clear_margins(vc, 1);
1567 scrollback_max += count;
1568 if (scrollback_max > scrollback_phys_max)
1569 scrollback_max = scrollback_phys_max;
1570 scrollback_current = 0;
1573 static __inline__ void ypan_down(struct vc_data *vc, int count)
1575 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1576 struct fbcon_display *p = &fb_display[vc->vc_num];
1577 struct fbcon_ops *ops = info->fbcon_par;
1579 p->yscroll -= count;
1580 if (p->yscroll < 0) {
1581 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1582 0, vc->vc_rows, vc->vc_cols);
1583 p->yscroll += p->vrows - vc->vc_rows;
1586 ops->var.xoffset = 0;
1587 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1588 ops->var.vmode &= ~FB_VMODE_YWRAP;
1589 ops->update_start(info);
1590 fbcon_clear_margins(vc, 1);
1591 scrollback_max -= count;
1592 if (scrollback_max < 0)
1594 scrollback_current = 0;
1597 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1599 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1600 struct fbcon_ops *ops = info->fbcon_par;
1601 struct fbcon_display *p = &fb_display[vc->vc_num];
1603 p->yscroll -= count;
1605 if (p->yscroll < 0) {
1606 p->yscroll += p->vrows - vc->vc_rows;
1607 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1610 ops->var.xoffset = 0;
1611 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1612 ops->var.vmode &= ~FB_VMODE_YWRAP;
1613 ops->update_start(info);
1614 fbcon_clear_margins(vc, 1);
1615 scrollback_max -= count;
1616 if (scrollback_max < 0)
1618 scrollback_current = 0;
1621 static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p,
1624 int count = vc->vc_rows;
1625 unsigned short *d, *s;
1629 d = (u16 *) softback_curr;
1630 if (d == (u16 *) softback_in)
1631 d = (u16 *) vc->vc_origin;
1632 n = softback_curr + delta * vc->vc_size_row;
1633 softback_lines -= delta;
1635 if (softback_curr < softback_top && n < softback_buf) {
1636 n += softback_end - softback_buf;
1637 if (n < softback_top) {
1639 (softback_top - n) / vc->vc_size_row;
1642 } else if (softback_curr >= softback_top
1643 && n < softback_top) {
1645 (softback_top - n) / vc->vc_size_row;
1649 if (softback_curr > softback_in && n >= softback_end) {
1650 n += softback_buf - softback_end;
1651 if (n > softback_in) {
1655 } else if (softback_curr <= softback_in && n > softback_in) {
1660 if (n == softback_curr)
1663 s = (u16 *) softback_curr;
1664 if (s == (u16 *) softback_in)
1665 s = (u16 *) vc->vc_origin;
1667 unsigned short *start;
1671 unsigned short attr = 1;
1674 le = advance_row(s, 1);
1677 if (attr != (c & 0xff00)) {
1680 fbcon_putcs(vc, start, s - start,
1686 if (c == scr_readw(d)) {
1688 fbcon_putcs(vc, start, s - start,
1701 fbcon_putcs(vc, start, s - start, line, x);
1703 if (d == (u16 *) softback_end)
1704 d = (u16 *) softback_buf;
1705 if (d == (u16 *) softback_in)
1706 d = (u16 *) vc->vc_origin;
1707 if (s == (u16 *) softback_end)
1708 s = (u16 *) softback_buf;
1709 if (s == (u16 *) softback_in)
1710 s = (u16 *) vc->vc_origin;
1714 static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
1715 int line, int count, int dy)
1717 unsigned short *s = (unsigned short *)
1718 (vc->vc_origin + vc->vc_size_row * line);
1721 unsigned short *start = s;
1722 unsigned short *le = advance_row(s, 1);
1725 unsigned short attr = 1;
1729 if (attr != (c & 0xff00)) {
1732 fbcon_putcs(vc, start, s - start,
1738 console_conditional_schedule();
1742 fbcon_putcs(vc, start, s - start, dy, x);
1743 console_conditional_schedule();
1748 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1749 struct fbcon_display *p, int line, int count, int ycount)
1751 int offset = ycount * vc->vc_cols;
1752 unsigned short *d = (unsigned short *)
1753 (vc->vc_origin + vc->vc_size_row * line);
1754 unsigned short *s = d + offset;
1755 struct fbcon_ops *ops = info->fbcon_par;
1758 unsigned short *start = s;
1759 unsigned short *le = advance_row(s, 1);
1766 if (c == scr_readw(d)) {
1768 ops->bmove(vc, info, line + ycount, x,
1769 line, x, 1, s-start);
1779 console_conditional_schedule();
1784 ops->bmove(vc, info, line + ycount, x, line, x, 1,
1786 console_conditional_schedule();
1791 /* NOTE: We subtract two lines from these pointers */
1792 s -= vc->vc_size_row;
1793 d -= vc->vc_size_row;
1798 static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p,
1799 int line, int count, int offset)
1801 unsigned short *d = (unsigned short *)
1802 (vc->vc_origin + vc->vc_size_row * line);
1803 unsigned short *s = d + offset;
1806 unsigned short *start = s;
1807 unsigned short *le = advance_row(s, 1);
1810 unsigned short attr = 1;
1814 if (attr != (c & 0xff00)) {
1817 fbcon_putcs(vc, start, s - start,
1823 if (c == scr_readw(d)) {
1825 fbcon_putcs(vc, start, s - start,
1835 console_conditional_schedule();
1840 fbcon_putcs(vc, start, s - start, line, x);
1841 console_conditional_schedule();
1846 /* NOTE: We subtract two lines from these pointers */
1847 s -= vc->vc_size_row;
1848 d -= vc->vc_size_row;
1853 static inline void fbcon_softback_note(struct vc_data *vc, int t,
1858 if (vc->vc_num != fg_console)
1860 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1863 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1865 p = advance_row(p, 1);
1866 softback_in += vc->vc_size_row;
1867 if (softback_in == softback_end)
1868 softback_in = softback_buf;
1869 if (softback_in == softback_top) {
1870 softback_top += vc->vc_size_row;
1871 if (softback_top == softback_end)
1872 softback_top = softback_buf;
1875 softback_curr = softback_in;
1878 static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
1879 enum con_scroll dir, unsigned int count)
1881 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1882 struct fbcon_display *p = &fb_display[vc->vc_num];
1883 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1885 if (fbcon_is_inactive(vc, info))
1888 fbcon_cursor(vc, CM_ERASE);
1891 * ++Geert: Only use ywrap/ypan if the console is in text mode
1892 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1893 * whole screen (prevents flicker).
1898 if (count > vc->vc_rows) /* Maximum realistic size */
1899 count = vc->vc_rows;
1901 fbcon_softback_note(vc, t, count);
1902 if (logo_shown >= 0)
1904 switch (p->scrollmode) {
1906 fbcon_redraw_blit(vc, info, p, t, b - t - count,
1908 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1909 scr_memsetw((unsigned short *) (vc->vc_origin +
1912 vc->vc_video_erase_char,
1913 vc->vc_size_row * count);
1917 case SCROLL_WRAP_MOVE:
1918 if (b - t - count > 3 * vc->vc_rows >> 2) {
1920 fbcon_bmove(vc, 0, 0, count, 0, t,
1922 ywrap_up(vc, count);
1923 if (vc->vc_rows - b > 0)
1924 fbcon_bmove(vc, b - count, 0, b, 0,
1927 } else if (info->flags & FBINFO_READS_FAST)
1928 fbcon_bmove(vc, t + count, 0, t, 0,
1929 b - t - count, vc->vc_cols);
1932 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1935 case SCROLL_PAN_REDRAW:
1936 if ((p->yscroll + count <=
1937 2 * (p->vrows - vc->vc_rows))
1938 && ((!scroll_partial && (b - t == vc->vc_rows))
1941 3 * vc->vc_rows >> 2)))) {
1943 fbcon_redraw_move(vc, p, 0, t, count);
1944 ypan_up_redraw(vc, t, count);
1945 if (vc->vc_rows - b > 0)
1946 fbcon_redraw_move(vc, p, b,
1947 vc->vc_rows - b, b);
1949 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1950 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1953 case SCROLL_PAN_MOVE:
1954 if ((p->yscroll + count <=
1955 2 * (p->vrows - vc->vc_rows))
1956 && ((!scroll_partial && (b - t == vc->vc_rows))
1959 3 * vc->vc_rows >> 2)))) {
1961 fbcon_bmove(vc, 0, 0, count, 0, t,
1964 if (vc->vc_rows - b > 0)
1965 fbcon_bmove(vc, b - count, 0, b, 0,
1968 } else if (info->flags & FBINFO_READS_FAST)
1969 fbcon_bmove(vc, t + count, 0, t, 0,
1970 b - t - count, vc->vc_cols);
1973 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1978 fbcon_redraw(vc, p, t, b - t - count,
1979 count * vc->vc_cols);
1980 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1981 scr_memsetw((unsigned short *) (vc->vc_origin +
1984 vc->vc_video_erase_char,
1985 vc->vc_size_row * count);
1991 if (count > vc->vc_rows) /* Maximum realistic size */
1992 count = vc->vc_rows;
1993 if (logo_shown >= 0)
1995 switch (p->scrollmode) {
1997 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1999 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2000 scr_memsetw((unsigned short *) (vc->vc_origin +
2003 vc->vc_video_erase_char,
2004 vc->vc_size_row * count);
2008 case SCROLL_WRAP_MOVE:
2009 if (b - t - count > 3 * vc->vc_rows >> 2) {
2010 if (vc->vc_rows - b > 0)
2011 fbcon_bmove(vc, b, 0, b - count, 0,
2014 ywrap_down(vc, count);
2016 fbcon_bmove(vc, count, 0, 0, 0, t,
2018 } else if (info->flags & FBINFO_READS_FAST)
2019 fbcon_bmove(vc, t, 0, t + count, 0,
2020 b - t - count, vc->vc_cols);
2023 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2026 case SCROLL_PAN_MOVE:
2027 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
2028 && ((!scroll_partial && (b - t == vc->vc_rows))
2031 3 * vc->vc_rows >> 2)))) {
2032 if (vc->vc_rows - b > 0)
2033 fbcon_bmove(vc, b, 0, b - count, 0,
2036 ypan_down(vc, count);
2038 fbcon_bmove(vc, count, 0, 0, 0, t,
2040 } else if (info->flags & FBINFO_READS_FAST)
2041 fbcon_bmove(vc, t, 0, t + count, 0,
2042 b - t - count, vc->vc_cols);
2045 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2048 case SCROLL_PAN_REDRAW:
2049 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
2050 && ((!scroll_partial && (b - t == vc->vc_rows))
2053 3 * vc->vc_rows >> 2)))) {
2054 if (vc->vc_rows - b > 0)
2055 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
2057 ypan_down_redraw(vc, t, count);
2059 fbcon_redraw_move(vc, p, count, t, 0);
2061 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
2062 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2067 fbcon_redraw(vc, p, b - 1, b - t - count,
2068 -count * vc->vc_cols);
2069 fbcon_clear(vc, t, 0, count, vc->vc_cols);
2070 scr_memsetw((unsigned short *) (vc->vc_origin +
2073 vc->vc_video_erase_char,
2074 vc->vc_size_row * count);
2082 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
2083 int height, int width)
2085 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2086 struct fbcon_display *p = &fb_display[vc->vc_num];
2088 if (fbcon_is_inactive(vc, info))
2091 if (!width || !height)
2094 /* Split blits that cross physical y_wrap case.
2095 * Pathological case involves 4 blits, better to use recursive
2096 * code rather than unrolled case
2098 * Recursive invocations don't need to erase the cursor over and
2099 * over again, so we use fbcon_bmove_rec()
2101 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2102 p->vrows - p->yscroll);
2105 static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx,
2106 int dy, int dx, int height, int width, u_int y_break)
2108 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2109 struct fbcon_ops *ops = info->fbcon_par;
2112 if (sy < y_break && sy + height > y_break) {
2114 if (dy < sy) { /* Avoid trashing self */
2115 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2117 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2118 height - b, width, y_break);
2120 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2121 height - b, width, y_break);
2122 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2128 if (dy < y_break && dy + height > y_break) {
2130 if (dy < sy) { /* Avoid trashing self */
2131 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2133 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2134 height - b, width, y_break);
2136 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2137 height - b, width, y_break);
2138 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2143 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2147 static void updatescrollmode(struct fbcon_display *p,
2148 struct fb_info *info,
2151 struct fbcon_ops *ops = info->fbcon_par;
2152 int fh = vc->vc_font.height;
2153 int cap = info->flags;
2155 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2156 info->fix.xpanstep);
2157 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2158 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2159 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2160 info->var.xres_virtual);
2161 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2162 divides(ypan, vc->vc_font.height) && vyres > yres;
2163 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2164 divides(ywrap, vc->vc_font.height) &&
2165 divides(vc->vc_font.height, vyres) &&
2166 divides(vc->vc_font.height, yres);
2167 int reading_fast = cap & FBINFO_READS_FAST;
2168 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2169 !(cap & FBINFO_HWACCEL_DISABLED);
2170 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2171 !(cap & FBINFO_HWACCEL_DISABLED);
2173 p->vrows = vyres/fh;
2174 if (yres > (fh * (vc->vc_rows + 1)))
2175 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2176 if ((yres % fh) && (vyres % fh < yres % fh))
2179 if (good_wrap || good_pan) {
2180 if (reading_fast || fast_copyarea)
2181 p->scrollmode = good_wrap ?
2182 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
2184 p->scrollmode = good_wrap ? SCROLL_REDRAW :
2187 if (reading_fast || (fast_copyarea && !fast_imageblit))
2188 p->scrollmode = SCROLL_MOVE;
2190 p->scrollmode = SCROLL_REDRAW;
2194 #define PITCH(w) (((w) + 7) >> 3)
2195 #define CALC_FONTSZ(h, p, c) ((h) * (p) * (c)) /* size = height * pitch * charcount */
2197 static int fbcon_resize(struct vc_data *vc, unsigned int width,
2198 unsigned int height, unsigned int user)
2200 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2201 struct fbcon_ops *ops = info->fbcon_par;
2202 struct fbcon_display *p = &fb_display[vc->vc_num];
2203 struct fb_var_screeninfo var = info->var;
2204 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2206 if (ops->p && ops->p->userfont && FNTSIZE(vc->vc_font.data)) {
2208 int pitch = PITCH(vc->vc_font.width);
2211 * If user font, ensure that a possible change to user font
2212 * height or width will not allow a font data out-of-bounds access.
2213 * NOTE: must use original charcount in calculation as font
2214 * charcount can change and cannot be used to determine the
2215 * font data allocated size.
2219 size = CALC_FONTSZ(vc->vc_font.height, pitch, FNTCHARCNT(vc->vc_font.data));
2220 if (size > FNTSIZE(vc->vc_font.data))
2224 virt_w = FBCON_SWAP(ops->rotate, width, height);
2225 virt_h = FBCON_SWAP(ops->rotate, height, width);
2226 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2227 vc->vc_font.height);
2228 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2230 var.xres = virt_w * virt_fw;
2231 var.yres = virt_h * virt_fh;
2232 x_diff = info->var.xres - var.xres;
2233 y_diff = info->var.yres - var.yres;
2234 if (x_diff < 0 || x_diff > virt_fw ||
2235 y_diff < 0 || y_diff > virt_fh) {
2236 const struct fb_videomode *mode;
2238 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2239 mode = fb_find_best_mode(&var, &info->modelist);
2242 display_to_var(&var, p);
2243 fb_videomode_to_var(&var, mode);
2245 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
2248 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
2249 if (con_is_visible(vc)) {
2250 var.activate = FB_ACTIVATE_NOW |
2252 fb_set_var(info, &var);
2254 var_to_display(p, &info->var, info);
2255 ops->var = info->var;
2257 updatescrollmode(p, info, vc);
2261 static int fbcon_switch(struct vc_data *vc)
2263 struct fb_info *info, *old_info = NULL;
2264 struct fbcon_ops *ops;
2265 struct fbcon_display *p = &fb_display[vc->vc_num];
2266 struct fb_var_screeninfo var;
2267 int i, ret, prev_console, charcnt = 256;
2269 info = registered_fb[con2fb_map[vc->vc_num]];
2270 ops = info->fbcon_par;
2274 fbcon_set_origin(vc);
2275 softback_top = softback_curr = softback_in = softback_buf;
2277 fbcon_update_softback(vc);
2280 if (logo_shown >= 0) {
2281 struct vc_data *conp2 = vc_cons[logo_shown].d;
2283 if (conp2->vc_top == logo_lines
2284 && conp2->vc_bottom == conp2->vc_rows)
2286 logo_shown = FBCON_LOGO_CANSHOW;
2289 prev_console = ops->currcon;
2290 if (prev_console != -1)
2291 old_info = registered_fb[con2fb_map[prev_console]];
2293 * FIXME: If we have multiple fbdev's loaded, we need to
2294 * update all info->currcon. Perhaps, we can place this
2295 * in a centralized structure, but this might break some
2298 * info->currcon = vc->vc_num;
2300 for_each_registered_fb(i) {
2301 if (registered_fb[i]->fbcon_par) {
2302 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
2304 o->currcon = vc->vc_num;
2307 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2308 display_to_var(&var, p);
2309 var.activate = FB_ACTIVATE_NOW;
2312 * make sure we don't unnecessarily trip the memcmp()
2315 info->var.activate = var.activate;
2316 var.vmode |= info->var.vmode & ~FB_VMODE_MASK;
2317 fb_set_var(info, &var);
2318 ops->var = info->var;
2320 if (old_info != NULL && (old_info != info ||
2321 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
2322 if (info->fbops->fb_set_par) {
2323 ret = info->fbops->fb_set_par(info);
2326 printk(KERN_ERR "fbcon_switch: detected "
2327 "unhandled fb_set_par error, "
2328 "error code %d\n", ret);
2331 if (old_info != info)
2332 fbcon_del_cursor_timer(old_info);
2335 if (fbcon_is_inactive(vc, info) ||
2336 ops->blank_state != FB_BLANK_UNBLANK)
2337 fbcon_del_cursor_timer(info);
2339 fbcon_add_cursor_timer(info);
2341 set_blitting_type(vc, info);
2342 ops->cursor_reset = 1;
2344 if (ops->rotate_font && ops->rotate_font(info, vc)) {
2345 ops->rotate = FB_ROTATE_UR;
2346 set_blitting_type(vc, info);
2349 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
2350 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
2353 charcnt = FNTCHARCNT(vc->vc_font.data);
2356 vc->vc_complement_mask <<= 1;
2358 updatescrollmode(p, info, vc);
2360 switch (p->scrollmode) {
2361 case SCROLL_WRAP_MOVE:
2362 scrollback_phys_max = p->vrows - vc->vc_rows;
2364 case SCROLL_PAN_MOVE:
2365 case SCROLL_PAN_REDRAW:
2366 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2367 if (scrollback_phys_max < 0)
2368 scrollback_phys_max = 0;
2371 scrollback_phys_max = 0;
2376 scrollback_current = 0;
2378 if (!fbcon_is_inactive(vc, info)) {
2379 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2380 ops->update_start(info);
2383 fbcon_set_palette(vc, color_table);
2384 fbcon_clear_margins(vc, 0);
2386 if (logo_shown == FBCON_LOGO_DRAW) {
2388 logo_shown = fg_console;
2389 /* This is protected above by initmem_freed */
2390 fb_show_logo(info, ops->rotate);
2392 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2393 vc->vc_size_row * (vc->vc_bottom -
2400 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2404 unsigned short charmask = vc->vc_hi_font_mask ?
2406 unsigned short oldc;
2408 oldc = vc->vc_video_erase_char;
2409 vc->vc_video_erase_char &= charmask;
2410 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2411 vc->vc_video_erase_char = oldc;
2415 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2417 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2418 struct fbcon_ops *ops = info->fbcon_par;
2421 struct fb_var_screeninfo var = info->var;
2426 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE |
2427 FB_ACTIVATE_KD_TEXT;
2428 fb_set_var(info, &var);
2430 ops->var = info->var;
2434 if (!fbcon_is_inactive(vc, info)) {
2435 if (ops->blank_state != blank) {
2436 ops->blank_state = blank;
2437 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2438 ops->cursor_flash = (!blank);
2440 if (fb_blank(info, blank))
2441 fbcon_generic_blank(vc, info, blank);
2448 if (mode_switch || fbcon_is_inactive(vc, info) ||
2449 ops->blank_state != FB_BLANK_UNBLANK)
2450 fbcon_del_cursor_timer(info);
2452 fbcon_add_cursor_timer(info);
2457 static int fbcon_debug_enter(struct vc_data *vc)
2459 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2460 struct fbcon_ops *ops = info->fbcon_par;
2462 ops->save_graphics = ops->graphics;
2464 if (info->fbops->fb_debug_enter)
2465 info->fbops->fb_debug_enter(info);
2466 fbcon_set_palette(vc, color_table);
2470 static int fbcon_debug_leave(struct vc_data *vc)
2472 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2473 struct fbcon_ops *ops = info->fbcon_par;
2475 ops->graphics = ops->save_graphics;
2476 if (info->fbops->fb_debug_leave)
2477 info->fbops->fb_debug_leave(info);
2481 static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2483 u8 *fontdata = vc->vc_font.data;
2484 u8 *data = font->data;
2487 font->width = vc->vc_font.width;
2488 font->height = vc->vc_font.height;
2489 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2493 if (font->width <= 8) {
2494 j = vc->vc_font.height;
2495 for (i = 0; i < font->charcount; i++) {
2496 memcpy(data, fontdata, j);
2497 memset(data + j, 0, 32 - j);
2501 } else if (font->width <= 16) {
2502 j = vc->vc_font.height * 2;
2503 for (i = 0; i < font->charcount; i++) {
2504 memcpy(data, fontdata, j);
2505 memset(data + j, 0, 64 - j);
2509 } else if (font->width <= 24) {
2510 for (i = 0; i < font->charcount; i++) {
2511 for (j = 0; j < vc->vc_font.height; j++) {
2512 *data++ = fontdata[0];
2513 *data++ = fontdata[1];
2514 *data++ = fontdata[2];
2515 fontdata += sizeof(u32);
2517 memset(data, 0, 3 * (32 - j));
2518 data += 3 * (32 - j);
2521 j = vc->vc_font.height * 4;
2522 for (i = 0; i < font->charcount; i++) {
2523 memcpy(data, fontdata, j);
2524 memset(data + j, 0, 128 - j);
2532 /* set/clear vc_hi_font_mask and update vc attrs accordingly */
2533 static void set_vc_hi_font(struct vc_data *vc, bool set)
2536 vc->vc_hi_font_mask = 0;
2537 if (vc->vc_can_do_color) {
2538 vc->vc_complement_mask >>= 1;
2539 vc->vc_s_complement_mask >>= 1;
2542 /* ++Edmund: reorder the attribute bits */
2543 if (vc->vc_can_do_color) {
2544 unsigned short *cp =
2545 (unsigned short *) vc->vc_origin;
2546 int count = vc->vc_screenbuf_size / 2;
2548 for (; count > 0; count--, cp++) {
2550 scr_writew(((c & 0xfe00) >> 1) |
2553 c = vc->vc_video_erase_char;
2554 vc->vc_video_erase_char =
2555 ((c & 0xfe00) >> 1) | (c & 0xff);
2559 vc->vc_hi_font_mask = 0x100;
2560 if (vc->vc_can_do_color) {
2561 vc->vc_complement_mask <<= 1;
2562 vc->vc_s_complement_mask <<= 1;
2565 /* ++Edmund: reorder the attribute bits */
2567 unsigned short *cp =
2568 (unsigned short *) vc->vc_origin;
2569 int count = vc->vc_screenbuf_size / 2;
2571 for (; count > 0; count--, cp++) {
2572 unsigned short newc;
2574 if (vc->vc_can_do_color)
2576 ((c & 0xff00) << 1) | (c &
2580 scr_writew(newc, cp);
2582 c = vc->vc_video_erase_char;
2583 if (vc->vc_can_do_color) {
2584 vc->vc_video_erase_char =
2585 ((c & 0xff00) << 1) | (c & 0xff);
2588 vc->vc_video_erase_char = c & ~0x100;
2593 static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2594 const u8 * data, int userfont)
2596 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2597 struct fbcon_ops *ops = info->fbcon_par;
2598 struct fbcon_display *p = &fb_display[vc->vc_num];
2601 char *old_data = NULL;
2603 if (con_is_visible(vc) && softback_lines)
2604 fbcon_set_origin(vc);
2606 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2608 old_data = vc->vc_font.data;
2610 cnt = FNTCHARCNT(data);
2613 vc->vc_font.data = (void *)(p->fontdata = data);
2614 if ((p->userfont = userfont))
2616 vc->vc_font.width = w;
2617 vc->vc_font.height = h;
2618 if (vc->vc_hi_font_mask && cnt == 256)
2619 set_vc_hi_font(vc, false);
2620 else if (!vc->vc_hi_font_mask && cnt == 512)
2621 set_vc_hi_font(vc, true);
2626 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2627 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2630 vc_resize(vc, cols, rows);
2631 if (con_is_visible(vc) && softback_buf)
2632 fbcon_update_softback(vc);
2633 } else if (con_is_visible(vc)
2634 && vc->vc_mode == KD_TEXT) {
2635 fbcon_clear_margins(vc, 0);
2639 if (old_data && (--REFCOUNT(old_data) == 0))
2640 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2644 static int fbcon_copy_font(struct vc_data *vc, int con)
2646 struct fbcon_display *od = &fb_display[con];
2647 struct console_font *f = &vc->vc_font;
2649 if (od->fontdata == f->data)
2650 return 0; /* already the same font... */
2651 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2655 * User asked to set font; we are guaranteed that
2656 * a) width and height are in range 1..32
2657 * b) charcount does not exceed 512
2658 * but lets not assume that, since someone might someday want to use larger
2659 * fonts. And charcount of 512 is small for unicode support.
2661 * However, user space gives the font in 32 rows , regardless of
2662 * actual font height. So a new API is needed if support for larger fonts
2663 * is ever implemented.
2666 static int fbcon_set_font(struct vc_data *vc, struct console_font *font,
2669 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2670 unsigned charcount = font->charcount;
2671 int w = font->width;
2672 int h = font->height;
2675 u8 *new_data, *data = font->data;
2676 int pitch = PITCH(font->width);
2678 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2679 * If not this check should be changed to charcount < 256 */
2680 if (charcount != 256 && charcount != 512)
2683 /* Make sure drawing engine can handle the font */
2684 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2685 !(info->pixmap.blit_y & (1 << (font->height - 1))))
2688 /* Make sure driver can handle the font length */
2689 if (fbcon_invalid_charcount(info, charcount))
2692 size = CALC_FONTSZ(h, pitch, charcount);
2694 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2699 new_data += FONT_EXTRA_WORDS * sizeof(int);
2700 FNTSIZE(new_data) = size;
2701 FNTCHARCNT(new_data) = charcount;
2702 REFCOUNT(new_data) = 0; /* usage counter */
2703 for (i=0; i< charcount; i++) {
2704 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2707 /* Since linux has a nice crc32 function use it for counting font
2709 csum = crc32(0, new_data, size);
2711 FNTSUM(new_data) = csum;
2712 /* Check if the same font is on some other console already */
2713 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2714 struct vc_data *tmp = vc_cons[i].d;
2716 if (fb_display[i].userfont &&
2717 fb_display[i].fontdata &&
2718 FNTSUM(fb_display[i].fontdata) == csum &&
2719 FNTSIZE(fb_display[i].fontdata) == size &&
2720 tmp->vc_font.width == w &&
2721 !memcmp(fb_display[i].fontdata, new_data, size)) {
2722 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2723 new_data = (u8 *)fb_display[i].fontdata;
2727 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2730 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2732 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2733 const struct font_desc *f;
2736 f = get_default_font(info->var.xres, info->var.yres,
2737 info->pixmap.blit_x, info->pixmap.blit_y);
2738 else if (!(f = find_font(name)))
2741 font->width = f->width;
2742 font->height = f->height;
2743 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2746 static u16 palette_red[16];
2747 static u16 palette_green[16];
2748 static u16 palette_blue[16];
2750 static struct fb_cmap palette_cmap = {
2751 0, 16, palette_red, palette_green, palette_blue, NULL
2754 static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table)
2756 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2760 if (fbcon_is_inactive(vc, info))
2763 if (!con_is_visible(vc))
2766 depth = fb_get_color_depth(&info->var, &info->fix);
2768 for (i = j = 0; i < 16; i++) {
2770 val = vc->vc_palette[j++];
2771 palette_red[k] = (val << 8) | val;
2772 val = vc->vc_palette[j++];
2773 palette_green[k] = (val << 8) | val;
2774 val = vc->vc_palette[j++];
2775 palette_blue[k] = (val << 8) | val;
2777 palette_cmap.len = 16;
2778 palette_cmap.start = 0;
2780 * If framebuffer is capable of less than 16 colors,
2781 * use default palette of fbcon.
2784 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2786 fb_set_cmap(&palette_cmap, info);
2789 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2794 if (vc->vc_num != fg_console || !softback_lines)
2795 return (u16 *) (vc->vc_origin + offset);
2796 line = offset / vc->vc_size_row;
2797 if (line >= softback_lines)
2798 return (u16 *) (vc->vc_origin + offset -
2799 softback_lines * vc->vc_size_row);
2800 p = softback_curr + offset;
2801 if (p >= softback_end)
2802 p += softback_buf - softback_end;
2806 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2812 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2813 unsigned long offset = (pos - vc->vc_origin) / 2;
2815 x = offset % vc->vc_cols;
2816 y = offset / vc->vc_cols;
2817 if (vc->vc_num == fg_console)
2818 y += softback_lines;
2819 ret = pos + (vc->vc_cols - x) * 2;
2820 } else if (vc->vc_num == fg_console && softback_lines) {
2821 unsigned long offset = pos - softback_curr;
2823 if (pos < softback_curr)
2824 offset += softback_end - softback_buf;
2826 x = offset % vc->vc_cols;
2827 y = offset / vc->vc_cols;
2828 ret = pos + (vc->vc_cols - x) * 2;
2829 if (ret == softback_end)
2831 if (ret == softback_in)
2832 ret = vc->vc_origin;
2834 /* Should not happen */
2836 ret = vc->vc_origin;
2845 /* As we might be inside of softback, we may work with non-contiguous buffer,
2846 that's why we have to use a separate routine. */
2847 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2850 u16 a = scr_readw(p);
2851 if (!vc->vc_can_do_color)
2853 else if (vc->vc_hi_font_mask == 0x100)
2854 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2855 (((a) & 0x0e00) << 4);
2857 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2858 (((a) & 0x0700) << 4);
2860 if (p == (u16 *) softback_end)
2861 p = (u16 *) softback_buf;
2862 if (p == (u16 *) softback_in)
2863 p = (u16 *) vc->vc_origin;
2867 static void fbcon_scrolldelta(struct vc_data *vc, int lines)
2869 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2870 struct fbcon_ops *ops = info->fbcon_par;
2871 struct fbcon_display *disp = &fb_display[fg_console];
2872 int offset, limit, scrollback_old;
2875 if (vc->vc_num != fg_console)
2877 if (vc->vc_mode != KD_TEXT || !lines)
2879 if (logo_shown >= 0) {
2880 struct vc_data *conp2 = vc_cons[logo_shown].d;
2882 if (conp2->vc_top == logo_lines
2883 && conp2->vc_bottom == conp2->vc_rows)
2885 if (logo_shown == vc->vc_num) {
2891 logo_lines * vc->vc_size_row;
2892 for (i = 0; i < logo_lines; i++) {
2893 if (p == softback_top)
2895 if (p == softback_buf)
2897 p -= vc->vc_size_row;
2898 q -= vc->vc_size_row;
2899 scr_memcpyw((u16 *) q, (u16 *) p,
2902 softback_in = softback_curr = p;
2903 update_region(vc, vc->vc_origin,
2904 logo_lines * vc->vc_cols);
2906 logo_shown = FBCON_LOGO_CANSHOW;
2908 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2909 fbcon_redraw_softback(vc, disp, lines);
2910 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2914 if (!scrollback_phys_max)
2917 scrollback_old = scrollback_current;
2918 scrollback_current -= lines;
2919 if (scrollback_current < 0)
2920 scrollback_current = 0;
2921 else if (scrollback_current > scrollback_max)
2922 scrollback_current = scrollback_max;
2923 if (scrollback_current == scrollback_old)
2926 if (fbcon_is_inactive(vc, info))
2929 fbcon_cursor(vc, CM_ERASE);
2931 offset = disp->yscroll - scrollback_current;
2932 limit = disp->vrows;
2933 switch (disp->scrollmode) {
2934 case SCROLL_WRAP_MOVE:
2935 info->var.vmode |= FB_VMODE_YWRAP;
2937 case SCROLL_PAN_MOVE:
2938 case SCROLL_PAN_REDRAW:
2939 limit -= vc->vc_rows;
2940 info->var.vmode &= ~FB_VMODE_YWRAP;
2945 else if (offset >= limit)
2948 ops->var.xoffset = 0;
2949 ops->var.yoffset = offset * vc->vc_font.height;
2950 ops->update_start(info);
2952 if (!scrollback_current)
2953 fbcon_cursor(vc, CM_DRAW);
2956 static int fbcon_set_origin(struct vc_data *vc)
2959 fbcon_scrolldelta(vc, softback_lines);
2963 void fbcon_suspended(struct fb_info *info)
2965 struct vc_data *vc = NULL;
2966 struct fbcon_ops *ops = info->fbcon_par;
2968 if (!ops || ops->currcon < 0)
2970 vc = vc_cons[ops->currcon].d;
2972 /* Clear cursor, restore saved data */
2973 fbcon_cursor(vc, CM_ERASE);
2976 void fbcon_resumed(struct fb_info *info)
2979 struct fbcon_ops *ops = info->fbcon_par;
2981 if (!ops || ops->currcon < 0)
2983 vc = vc_cons[ops->currcon].d;
2988 static void fbcon_modechanged(struct fb_info *info)
2990 struct fbcon_ops *ops = info->fbcon_par;
2992 struct fbcon_display *p;
2995 if (!ops || ops->currcon < 0)
2997 vc = vc_cons[ops->currcon].d;
2998 if (vc->vc_mode != KD_TEXT ||
2999 registered_fb[con2fb_map[ops->currcon]] != info)
3002 p = &fb_display[vc->vc_num];
3003 set_blitting_type(vc, info);
3005 if (con_is_visible(vc)) {
3006 var_to_display(p, &info->var, info);
3007 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
3008 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
3009 cols /= vc->vc_font.width;
3010 rows /= vc->vc_font.height;
3011 vc_resize(vc, cols, rows);
3012 updatescrollmode(p, info, vc);
3014 scrollback_current = 0;
3016 if (!fbcon_is_inactive(vc, info)) {
3017 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
3018 ops->update_start(info);
3021 fbcon_set_palette(vc, color_table);
3024 fbcon_update_softback(vc);
3028 static void fbcon_set_all_vcs(struct fb_info *info)
3030 struct fbcon_ops *ops = info->fbcon_par;
3032 struct fbcon_display *p;
3033 int i, rows, cols, fg = -1;
3035 if (!ops || ops->currcon < 0)
3038 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3040 if (!vc || vc->vc_mode != KD_TEXT ||
3041 registered_fb[con2fb_map[i]] != info)
3044 if (con_is_visible(vc)) {
3049 p = &fb_display[vc->vc_num];
3050 set_blitting_type(vc, info);
3051 var_to_display(p, &info->var, info);
3052 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
3053 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
3054 cols /= vc->vc_font.width;
3055 rows /= vc->vc_font.height;
3056 vc_resize(vc, cols, rows);
3060 fbcon_modechanged(info);
3064 void fbcon_update_vcs(struct fb_info *info, bool all)
3067 fbcon_set_all_vcs(info);
3069 fbcon_modechanged(info);
3071 EXPORT_SYMBOL(fbcon_update_vcs);
3073 int fbcon_mode_deleted(struct fb_info *info,
3074 struct fb_videomode *mode)
3076 struct fb_info *fb_info;
3077 struct fbcon_display *p;
3078 int i, j, found = 0;
3080 /* before deletion, ensure that mode is not in use */
3081 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3085 fb_info = registered_fb[j];
3086 if (fb_info != info)
3091 if (fb_mode_is_equal(p->mode, mode)) {
3099 #ifdef CONFIG_VT_HW_CONSOLE_BINDING
3100 static void fbcon_unbind(void)
3104 ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc,
3108 fbcon_has_console_bind = 0;
3111 static inline void fbcon_unbind(void) {}
3112 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */
3114 /* called with console_lock held */
3115 void fbcon_fb_unbind(struct fb_info *info)
3117 int i, new_idx = -1, ret = 0;
3118 int idx = info->node;
3120 WARN_CONSOLE_UNLOCKED();
3122 if (!fbcon_has_console_bind)
3125 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3126 if (con2fb_map[i] != idx &&
3127 con2fb_map[i] != -1) {
3128 new_idx = con2fb_map[i];
3133 if (new_idx != -1) {
3134 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3135 if (con2fb_map[i] == idx)
3136 set_con2fb_map(i, new_idx, 0);
3139 struct fb_info *info = registered_fb[idx];
3141 /* This is sort of like set_con2fb_map, except it maps
3142 * the consoles to no device and then releases the
3143 * oldinfo to free memory and cancel the cursor blink
3144 * timer. I can imagine this just becoming part of
3145 * set_con2fb_map where new_idx is -1
3147 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3148 if (con2fb_map[i] == idx) {
3150 if (!search_fb_in_map(idx)) {
3151 ret = con2fb_release_oldinfo(vc_cons[i].d,
3155 con2fb_map[i] = idx;
3165 /* called with console_lock held */
3166 void fbcon_fb_unregistered(struct fb_info *info)
3170 WARN_CONSOLE_UNLOCKED();
3172 if (deferred_takeover)
3176 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3177 if (con2fb_map[i] == idx)
3181 if (idx == info_idx) {
3184 for_each_registered_fb(i) {
3190 if (info_idx != -1) {
3191 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3192 if (con2fb_map[i] == -1)
3193 con2fb_map[i] = info_idx;
3197 if (primary_device == idx)
3198 primary_device = -1;
3200 if (!num_registered_fb)
3201 do_unregister_con_driver(&fb_con);
3204 void fbcon_remap_all(struct fb_info *info)
3206 int i, idx = info->node;
3209 if (deferred_takeover) {
3210 for (i = first_fb_vc; i <= last_fb_vc; i++)
3211 con2fb_map_boot[i] = idx;
3212 fbcon_map_override();
3217 for (i = first_fb_vc; i <= last_fb_vc; i++)
3218 set_con2fb_map(i, idx, 0);
3220 if (con_is_bound(&fb_con)) {
3221 printk(KERN_INFO "fbcon: Remapping primary device, "
3222 "fb%i, to tty %i-%i\n", idx,
3223 first_fb_vc + 1, last_fb_vc + 1);
3229 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
3230 static void fbcon_select_primary(struct fb_info *info)
3232 if (!map_override && primary_device == -1 &&
3233 fb_is_primary_device(info)) {
3236 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
3237 info->fix.id, info->node);
3238 primary_device = info->node;
3240 for (i = first_fb_vc; i <= last_fb_vc; i++)
3241 con2fb_map_boot[i] = primary_device;
3243 if (con_is_bound(&fb_con)) {
3244 printk(KERN_INFO "fbcon: Remapping primary device, "
3245 "fb%i, to tty %i-%i\n", info->node,
3246 first_fb_vc + 1, last_fb_vc + 1);
3247 info_idx = primary_device;
3253 static inline void fbcon_select_primary(struct fb_info *info)
3257 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */
3259 /* called with console_lock held */
3260 int fbcon_fb_registered(struct fb_info *info)
3262 int ret = 0, i, idx;
3264 WARN_CONSOLE_UNLOCKED();
3267 fbcon_select_primary(info);
3269 if (deferred_takeover) {
3270 pr_info("fbcon: Deferring console take-over\n");
3274 if (info_idx == -1) {
3275 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3276 if (con2fb_map_boot[i] == idx) {
3283 ret = do_fbcon_takeover(1);
3285 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3286 if (con2fb_map_boot[i] == idx)
3287 set_con2fb_map(i, idx, 0);
3294 void fbcon_fb_blanked(struct fb_info *info, int blank)
3296 struct fbcon_ops *ops = info->fbcon_par;
3299 if (!ops || ops->currcon < 0)
3302 vc = vc_cons[ops->currcon].d;
3303 if (vc->vc_mode != KD_TEXT ||
3304 registered_fb[con2fb_map[ops->currcon]] != info)
3307 if (con_is_visible(vc)) {
3311 do_unblank_screen(0);
3313 ops->blank_state = blank;
3316 void fbcon_new_modelist(struct fb_info *info)
3320 struct fb_var_screeninfo var;
3321 const struct fb_videomode *mode;
3323 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3324 if (registered_fb[con2fb_map[i]] != info)
3326 if (!fb_display[i].mode)
3329 display_to_var(&var, &fb_display[i]);
3330 mode = fb_find_nearest_mode(fb_display[i].mode,
3332 fb_videomode_to_var(&var, mode);
3333 fbcon_set_disp(info, &var, vc->vc_num);
3337 void fbcon_get_requirement(struct fb_info *info,
3338 struct fb_blit_caps *caps)
3341 struct fbcon_display *p;
3346 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3348 if (vc && vc->vc_mode == KD_TEXT &&
3349 info->node == con2fb_map[i]) {
3351 caps->x |= 1 << (vc->vc_font.width - 1);
3352 caps->y |= 1 << (vc->vc_font.height - 1);
3353 charcnt = (p->userfont) ?
3354 FNTCHARCNT(p->fontdata) : 256;
3355 if (caps->len < charcnt)
3356 caps->len = charcnt;
3360 vc = vc_cons[fg_console].d;
3362 if (vc && vc->vc_mode == KD_TEXT &&
3363 info->node == con2fb_map[fg_console]) {
3364 p = &fb_display[fg_console];
3365 caps->x = 1 << (vc->vc_font.width - 1);
3366 caps->y = 1 << (vc->vc_font.height - 1);
3367 caps->len = (p->userfont) ?
3368 FNTCHARCNT(p->fontdata) : 256;
3373 int fbcon_set_con2fb_map_ioctl(void __user *argp)
3375 struct fb_con2fbmap con2fb;
3378 if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
3380 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
3382 if (con2fb.framebuffer >= FB_MAX)
3384 if (!registered_fb[con2fb.framebuffer])
3385 request_module("fb%d", con2fb.framebuffer);
3386 if (!registered_fb[con2fb.framebuffer]) {
3391 ret = set_con2fb_map(con2fb.console - 1,
3392 con2fb.framebuffer, 1);
3398 int fbcon_get_con2fb_map_ioctl(void __user *argp)
3400 struct fb_con2fbmap con2fb;
3402 if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
3404 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
3408 con2fb.framebuffer = con2fb_map[con2fb.console - 1];
3411 return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0;
3415 * The console `switch' structure for the frame buffer based console
3418 static const struct consw fb_con = {
3419 .owner = THIS_MODULE,
3420 .con_startup = fbcon_startup,
3421 .con_init = fbcon_init,
3422 .con_deinit = fbcon_deinit,
3423 .con_clear = fbcon_clear,
3424 .con_putc = fbcon_putc,
3425 .con_putcs = fbcon_putcs,
3426 .con_cursor = fbcon_cursor,
3427 .con_scroll = fbcon_scroll,
3428 .con_switch = fbcon_switch,
3429 .con_blank = fbcon_blank,
3430 .con_font_set = fbcon_set_font,
3431 .con_font_get = fbcon_get_font,
3432 .con_font_default = fbcon_set_def_font,
3433 .con_font_copy = fbcon_copy_font,
3434 .con_set_palette = fbcon_set_palette,
3435 .con_scrolldelta = fbcon_scrolldelta,
3436 .con_set_origin = fbcon_set_origin,
3437 .con_invert_region = fbcon_invert_region,
3438 .con_screen_pos = fbcon_screen_pos,
3439 .con_getxy = fbcon_getxy,
3440 .con_resize = fbcon_resize,
3441 .con_debug_enter = fbcon_debug_enter,
3442 .con_debug_leave = fbcon_debug_leave,
3445 static ssize_t store_rotate(struct device *device,
3446 struct device_attribute *attr, const char *buf,
3449 struct fb_info *info;
3454 idx = con2fb_map[fg_console];
3456 if (idx == -1 || registered_fb[idx] == NULL)
3459 info = registered_fb[idx];
3460 rotate = simple_strtoul(buf, last, 0);
3461 fbcon_rotate(info, rotate);
3467 static ssize_t store_rotate_all(struct device *device,
3468 struct device_attribute *attr,const char *buf,
3471 struct fb_info *info;
3476 idx = con2fb_map[fg_console];
3478 if (idx == -1 || registered_fb[idx] == NULL)
3481 info = registered_fb[idx];
3482 rotate = simple_strtoul(buf, last, 0);
3483 fbcon_rotate_all(info, rotate);
3489 static ssize_t show_rotate(struct device *device,
3490 struct device_attribute *attr,char *buf)
3492 struct fb_info *info;
3493 int rotate = 0, idx;
3496 idx = con2fb_map[fg_console];
3498 if (idx == -1 || registered_fb[idx] == NULL)
3501 info = registered_fb[idx];
3502 rotate = fbcon_get_rotate(info);
3505 return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3508 static ssize_t show_cursor_blink(struct device *device,
3509 struct device_attribute *attr, char *buf)
3511 struct fb_info *info;
3512 struct fbcon_ops *ops;
3513 int idx, blink = -1;
3516 idx = con2fb_map[fg_console];
3518 if (idx == -1 || registered_fb[idx] == NULL)
3521 info = registered_fb[idx];
3522 ops = info->fbcon_par;
3527 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3530 return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3533 static ssize_t store_cursor_blink(struct device *device,
3534 struct device_attribute *attr,
3535 const char *buf, size_t count)
3537 struct fb_info *info;
3542 idx = con2fb_map[fg_console];
3544 if (idx == -1 || registered_fb[idx] == NULL)
3547 info = registered_fb[idx];
3549 if (!info->fbcon_par)
3552 blink = simple_strtoul(buf, last, 0);
3555 fbcon_cursor_noblink = 0;
3556 fbcon_add_cursor_timer(info);
3558 fbcon_cursor_noblink = 1;
3559 fbcon_del_cursor_timer(info);
3567 static struct device_attribute device_attrs[] = {
3568 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3569 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
3570 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3571 store_cursor_blink),
3574 static int fbcon_init_device(void)
3578 fbcon_has_sysfs = 1;
3580 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
3581 error = device_create_file(fbcon_device, &device_attrs[i]);
3589 device_remove_file(fbcon_device, &device_attrs[i]);
3591 fbcon_has_sysfs = 0;
3597 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
3598 static void fbcon_register_existing_fbs(struct work_struct *work)
3604 for_each_registered_fb(i)
3605 fbcon_fb_registered(registered_fb[i]);
3610 static struct notifier_block fbcon_output_nb;
3611 static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs);
3613 static int fbcon_output_notifier(struct notifier_block *nb,
3614 unsigned long action, void *data)
3616 WARN_CONSOLE_UNLOCKED();
3618 pr_info("fbcon: Taking over console\n");
3620 dummycon_unregister_output_notifier(&fbcon_output_nb);
3621 deferred_takeover = false;
3622 logo_shown = FBCON_LOGO_DONTSHOW;
3624 /* We may get called in atomic context */
3625 schedule_work(&fbcon_deferred_takeover_work);
3631 static void fbcon_start(void)
3633 WARN_CONSOLE_UNLOCKED();
3635 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
3636 if (conswitchp != &dummy_con)
3637 deferred_takeover = false;
3639 if (deferred_takeover) {
3640 fbcon_output_nb.notifier_call = fbcon_output_notifier;
3641 dummycon_register_output_notifier(&fbcon_output_nb);
3646 if (num_registered_fb) {
3649 for_each_registered_fb(i) {
3654 do_fbcon_takeover(0);
3658 static void fbcon_exit(void)
3660 struct fb_info *info;
3663 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
3664 if (deferred_takeover) {
3665 dummycon_unregister_output_notifier(&fbcon_output_nb);
3666 deferred_takeover = false;
3670 kvfree((void *)softback_buf);
3673 for_each_registered_fb(i) {
3677 info = registered_fb[i];
3679 if (info->queue.func)
3680 pending = cancel_work_sync(&info->queue);
3681 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" :
3684 for (j = first_fb_vc; j <= last_fb_vc; j++) {
3685 if (con2fb_map[j] == i) {
3692 if (info->fbops->fb_release)
3693 info->fbops->fb_release(info, 0);
3694 module_put(info->fbops->owner);
3696 if (info->fbcon_par) {
3697 struct fbcon_ops *ops = info->fbcon_par;
3699 fbcon_del_cursor_timer(info);
3700 kfree(ops->cursor_src);
3701 kfree(ops->cursor_state.mask);
3702 kfree(info->fbcon_par);
3703 info->fbcon_par = NULL;
3706 if (info->queue.func == fb_flashcursor)
3707 info->queue.func = NULL;
3712 void __init fb_console_init(void)
3717 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
3720 if (IS_ERR(fbcon_device)) {
3721 printk(KERN_WARNING "Unable to create device "
3722 "for fbcon; errno = %ld\n",
3723 PTR_ERR(fbcon_device));
3724 fbcon_device = NULL;
3726 fbcon_init_device();
3728 for (i = 0; i < MAX_NR_CONSOLES; i++)
3737 static void __exit fbcon_deinit_device(void)
3741 if (fbcon_has_sysfs) {
3742 for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
3743 device_remove_file(fbcon_device, &device_attrs[i]);
3745 fbcon_has_sysfs = 0;
3749 void __exit fb_console_exit(void)
3752 fbcon_deinit_device();
3753 device_destroy(fb_class, MKDEV(0, 0));
3755 do_unregister_con_driver(&fb_con);