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 fbcon_update_softback(struct vc_data *vc)
286 int l = fbcon_softback_size / vc->vc_size_row;
289 softback_end = softback_buf + l * vc->vc_size_row;
291 /* Smaller scrollback makes no sense, and 0 would screw
292 the operation totally */
296 static void fb_flashcursor(void *private)
298 struct fb_info *info = private;
299 struct fbcon_ops *ops = info->fbcon_par;
301 struct vc_data *vc = NULL;
305 if (ops->currcon != -1)
306 vc = vc_cons[ops->currcon].d;
308 if (!vc || !CON_IS_VISIBLE(vc) ||
309 fbcon_is_inactive(vc, info) ||
310 registered_fb[con2fb_map[vc->vc_num]] != info ||
311 vc_cons[ops->currcon].d->vc_deccm != 1)
313 acquire_console_sem();
314 p = &fb_display[vc->vc_num];
315 c = scr_readw((u16 *) vc->vc_pos);
316 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
318 ops->cursor(vc, info, p, mode, softback_lines, get_color(vc, info, c, 1),
319 get_color(vc, info, c, 0));
320 release_console_sem();
323 #if defined(CONFIG_ATARI) || defined(CONFIG_MAC)
324 static int cursor_blink_rate;
325 static irqreturn_t fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp)
327 struct fb_info *info = dev_id;
329 if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) {
330 schedule_work(&info->queue);
331 vbl_cursor_cnt = cursor_blink_rate;
337 static void cursor_timer_handler(unsigned long dev_addr)
339 struct fb_info *info = (struct fb_info *) dev_addr;
340 struct fbcon_ops *ops = info->fbcon_par;
342 schedule_work(&info->queue);
343 mod_timer(&ops->cursor_timer, jiffies + HZ/5);
346 static void fbcon_add_cursor_timer(struct fb_info *info)
348 struct fbcon_ops *ops = info->fbcon_par;
350 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
351 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER)) {
352 if (!info->queue.func)
353 INIT_WORK(&info->queue, fb_flashcursor, info);
355 init_timer(&ops->cursor_timer);
356 ops->cursor_timer.function = cursor_timer_handler;
357 ops->cursor_timer.expires = jiffies + HZ / 5;
358 ops->cursor_timer.data = (unsigned long ) info;
359 add_timer(&ops->cursor_timer);
360 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
364 static void fbcon_del_cursor_timer(struct fb_info *info)
366 struct fbcon_ops *ops = info->fbcon_par;
368 if (info->queue.func == fb_flashcursor &&
369 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
370 del_timer_sync(&ops->cursor_timer);
371 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
376 static int __init fb_console_setup(char *this_opt)
381 if (!this_opt || !*this_opt)
384 while ((options = strsep(&this_opt, ",")) != NULL) {
385 if (!strncmp(options, "font:", 5))
386 strcpy(fontname, options + 5);
388 if (!strncmp(options, "scrollback:", 11)) {
391 fbcon_softback_size = simple_strtoul(options, &options, 0);
392 if (*options == 'k' || *options == 'K') {
393 fbcon_softback_size *= 1024;
403 if (!strncmp(options, "map:", 4)) {
406 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
410 (options[j++]-'0') % FB_MAX;
415 if (!strncmp(options, "vc:", 3)) {
418 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
421 if (*options++ == '-')
422 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
423 fbcon_is_default = 0;
429 __setup("fbcon=", fb_console_setup);
432 static int search_fb_in_map(int idx)
436 for (i = 0; i < MAX_NR_CONSOLES; i++) {
437 if (con2fb_map[i] == idx)
443 static int search_for_mapped_con(void)
447 for (i = 0; i < MAX_NR_CONSOLES; i++) {
448 if (con2fb_map[i] != -1)
454 static int fbcon_takeover(int show_logo)
458 if (!num_registered_fb)
462 logo_shown = FBCON_LOGO_DONTSHOW;
464 for (i = first_fb_vc; i <= last_fb_vc; i++)
465 con2fb_map[i] = info_idx;
467 err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
470 for (i = first_fb_vc; i <= last_fb_vc; i++) {
479 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
480 int cols, int rows, int new_cols, int new_rows)
482 /* Need to make room for the logo */
483 int cnt, erase = vc->vc_video_erase_char, step;
484 unsigned short *save = NULL, *r, *q;
487 * remove underline attribute from erase character
488 * if black and white framebuffer.
490 if (fb_get_color_depth(&info->var, &info->fix) == 1)
492 logo_height = fb_prepare_logo(info);
493 logo_lines = (logo_height + vc->vc_font.height - 1) /
495 q = (unsigned short *) (vc->vc_origin +
496 vc->vc_size_row * rows);
497 step = logo_lines * cols;
498 for (r = q - logo_lines * cols; r < q; r++)
499 if (scr_readw(r) != vc->vc_video_erase_char)
501 if (r != q && new_rows >= rows + logo_lines) {
502 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
504 int i = cols < new_cols ? cols : new_cols;
505 scr_memsetw(save, erase, logo_lines * new_cols * 2);
507 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
508 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
513 /* We can scroll screen down */
515 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
516 scr_memcpyw(r + step, r, vc->vc_size_row);
520 vc->vc_y += logo_lines;
521 vc->vc_pos += logo_lines * vc->vc_size_row;
524 scr_memsetw((unsigned short *) vc->vc_origin,
526 vc->vc_size_row * logo_lines);
528 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
529 fbcon_clear_margins(vc, 0);
534 q = (unsigned short *) (vc->vc_origin +
537 scr_memcpyw(q, save, logo_lines * new_cols * 2);
538 vc->vc_y += logo_lines;
539 vc->vc_pos += logo_lines * vc->vc_size_row;
543 if (logo_lines > vc->vc_bottom) {
544 logo_shown = FBCON_LOGO_CANSHOW;
546 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
547 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
548 logo_shown = FBCON_LOGO_DRAW;
549 vc->vc_top = logo_lines;
553 #ifdef CONFIG_FB_TILEBLITTING
554 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
557 struct fbcon_ops *ops = info->fbcon_par;
559 if ((info->flags & FBINFO_MISC_TILEBLITTING))
560 fbcon_set_tileops(vc, info, p, ops);
562 fbcon_set_bitops(ops);
565 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
568 struct fbcon_ops *ops = info->fbcon_par;
570 info->flags &= ~FBINFO_MISC_TILEBLITTING;
571 fbcon_set_bitops(ops);
573 #endif /* CONFIG_MISC_TILEBLITTING */
576 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
577 int unit, int oldidx)
579 struct fbcon_ops *ops = NULL;
582 if (!try_module_get(info->fbops->owner))
585 if (!err && info->fbops->fb_open &&
586 info->fbops->fb_open(info, 0))
590 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
596 memset(ops, 0, sizeof(struct fbcon_ops));
597 info->fbcon_par = ops;
598 set_blitting_type(vc, info, NULL);
602 con2fb_map[unit] = oldidx;
603 module_put(info->fbops->owner);
609 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
610 struct fb_info *newinfo, int unit,
611 int oldidx, int found)
613 struct fbcon_ops *ops = oldinfo->fbcon_par;
616 if (oldinfo->fbops->fb_release &&
617 oldinfo->fbops->fb_release(oldinfo, 0)) {
618 con2fb_map[unit] = oldidx;
619 if (!found && newinfo->fbops->fb_release)
620 newinfo->fbops->fb_release(newinfo, 0);
622 module_put(newinfo->fbops->owner);
627 fbcon_del_cursor_timer(oldinfo);
628 kfree(ops->cursor_state.mask);
629 kfree(ops->cursor_data);
630 kfree(oldinfo->fbcon_par);
631 oldinfo->fbcon_par = NULL;
632 module_put(oldinfo->fbops->owner);
638 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
639 int unit, int show_logo)
641 struct fbcon_ops *ops = info->fbcon_par;
643 ops->currcon = fg_console;
645 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT))
646 info->fbops->fb_set_par(info);
648 ops->flags |= FBCON_FLAGS_INIT;
652 fbcon_set_disp(info, &info->var, vc);
654 fbcon_preset_disp(info, &info->var, unit);
657 struct vc_data *fg_vc = vc_cons[fg_console].d;
658 struct fb_info *fg_info =
659 registered_fb[con2fb_map[fg_console]];
661 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
662 fg_vc->vc_rows, fg_vc->vc_cols,
666 update_screen(vc_cons[fg_console].d);
670 * set_con2fb_map - map console to frame buffer device
671 * @unit: virtual console number to map
672 * @newidx: frame buffer index to map virtual console to
673 * @user: user request
675 * Maps a virtual console @unit to a frame buffer device
678 static int set_con2fb_map(int unit, int newidx, int user)
680 struct vc_data *vc = vc_cons[unit].d;
681 int oldidx = con2fb_map[unit];
682 struct fb_info *info = registered_fb[newidx];
683 struct fb_info *oldinfo = NULL;
686 if (oldidx == newidx)
692 if (!err && !search_for_mapped_con()) {
694 return fbcon_takeover(0);
698 oldinfo = registered_fb[oldidx];
700 found = search_fb_in_map(newidx);
702 acquire_console_sem();
703 con2fb_map[unit] = newidx;
705 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
709 * If old fb is not mapped to any of the consoles,
710 * fbcon should release it.
712 if (!err && oldinfo && !search_fb_in_map(oldidx))
713 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
717 int show_logo = (fg_console == 0 && !user &&
718 logo_shown != FBCON_LOGO_DONTSHOW);
721 fbcon_add_cursor_timer(info);
722 con2fb_map_boot[unit] = newidx;
723 con2fb_init_display(vc, info, unit, show_logo);
726 release_console_sem();
731 * Low Level Operations
733 /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
734 static int var_to_display(struct display *disp,
735 struct fb_var_screeninfo *var,
736 struct fb_info *info)
738 disp->xres_virtual = var->xres_virtual;
739 disp->yres_virtual = var->yres_virtual;
740 disp->bits_per_pixel = var->bits_per_pixel;
741 disp->grayscale = var->grayscale;
742 disp->nonstd = var->nonstd;
743 disp->accel_flags = var->accel_flags;
744 disp->height = var->height;
745 disp->width = var->width;
746 disp->red = var->red;
747 disp->green = var->green;
748 disp->blue = var->blue;
749 disp->transp = var->transp;
750 disp->rotate = var->rotate;
751 disp->mode = fb_match_mode(var, &info->modelist);
752 if (disp->mode == NULL)
753 /* This should not happen */
758 static void display_to_var(struct fb_var_screeninfo *var,
759 struct display *disp)
761 fb_videomode_to_var(var, disp->mode);
762 var->xres_virtual = disp->xres_virtual;
763 var->yres_virtual = disp->yres_virtual;
764 var->bits_per_pixel = disp->bits_per_pixel;
765 var->grayscale = disp->grayscale;
766 var->nonstd = disp->nonstd;
767 var->accel_flags = disp->accel_flags;
768 var->height = disp->height;
769 var->width = disp->width;
770 var->red = disp->red;
771 var->green = disp->green;
772 var->blue = disp->blue;
773 var->transp = disp->transp;
774 var->rotate = disp->rotate;
777 static const char *fbcon_startup(void)
779 const char *display_desc = "frame buffer device";
780 struct display *p = &fb_display[fg_console];
781 struct vc_data *vc = vc_cons[fg_console].d;
782 const struct font_desc *font = NULL;
783 struct module *owner;
784 struct fb_info *info = NULL;
785 struct fbcon_ops *ops;
791 * If num_registered_fb is zero, this is a call for the dummy part.
792 * The frame buffer devices weren't initialized yet.
794 if (!num_registered_fb || info_idx == -1)
797 * Instead of blindly using registered_fb[0], we use info_idx, set by
800 info = registered_fb[info_idx];
804 owner = info->fbops->owner;
805 if (!try_module_get(owner))
807 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
812 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
818 memset(ops, 0, sizeof(struct fbcon_ops));
821 info->fbcon_par = ops;
822 set_blitting_type(vc, info, NULL);
824 if (info->fix.type != FB_TYPE_TEXT) {
825 if (fbcon_softback_size) {
829 kmalloc(fbcon_softback_size,
832 fbcon_softback_size = 0;
838 kfree((void *) softback_buf);
844 softback_in = softback_top = softback_curr =
849 /* Setup default font */
851 if (!fontname[0] || !(font = find_font(fontname)))
852 font = get_default_font(info->var.xres,
854 vc->vc_font.width = font->width;
855 vc->vc_font.height = font->height;
856 vc->vc_font.data = (void *)(p->fontdata = font->data);
857 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
860 cols = info->var.xres / vc->vc_font.width;
861 rows = info->var.yres / vc->vc_font.height;
862 vc_resize(vc, cols, rows);
864 DPRINTK("mode: %s\n", info->fix.id);
865 DPRINTK("visual: %d\n", info->fix.visual);
866 DPRINTK("res: %dx%d-%d\n", info->var.xres,
868 info->var.bits_per_pixel);
872 cursor_blink_rate = ATARI_CURSOR_BLINK_RATE;
874 request_irq(IRQ_AUTO_4, fb_vbl_handler,
875 IRQ_TYPE_PRIO, "framebuffer vbl",
878 #endif /* CONFIG_ATARI */
882 * On a Macintoy, the VBL interrupt may or may not be active.
883 * As interrupt based cursor is more reliable and race free, we
884 * probe for VBL interrupts.
889 * Probe for VBL: set temp. handler ...
891 irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0,
892 "framebuffer vbl", info);
896 * ... and spin for 20 ms ...
898 while (!vbl_detected && ++ct < 1000)
903 ("fbcon_startup: No VBL detected, using timer based cursor.\n");
905 free_irq(IRQ_MAC_VBL, fb_vbl_detect);
909 * interrupt based cursor ok
911 cursor_blink_rate = MAC_CURSOR_BLINK_RATE;
913 request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0,
914 "framebuffer vbl", info);
917 * VBL not detected: fall through, use timer based cursor
922 #endif /* CONFIG_MAC */
924 fbcon_add_cursor_timer(info);
928 static void fbcon_init(struct vc_data *vc, int init)
930 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
931 struct fbcon_ops *ops;
932 struct vc_data **default_mode = vc->vc_display_fg;
933 struct vc_data *svc = *default_mode;
934 struct display *t, *p = &fb_display[vc->vc_num];
935 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
938 if (info_idx == -1 || info == NULL)
943 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
944 (info->fix.type == FB_TYPE_TEXT))
947 info->var.xoffset = info->var.yoffset = p->yscroll = 0; /* reset wrap/pan */
949 if (var_to_display(p, &info->var, info))
952 /* If we are not the first console on this
953 fb, copy the font from that console */
954 t = &fb_display[svc->vc_num];
955 if (!vc->vc_font.data) {
956 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
957 vc->vc_font.width = (*default_mode)->vc_font.width;
958 vc->vc_font.height = (*default_mode)->vc_font.height;
959 p->userfont = t->userfont;
961 REFCOUNT(p->fontdata)++;
964 charcnt = FNTCHARCNT(p->fontdata);
965 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
966 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
967 if (charcnt == 256) {
968 vc->vc_hi_font_mask = 0;
970 vc->vc_hi_font_mask = 0x100;
971 if (vc->vc_can_do_color)
972 vc->vc_complement_mask <<= 1;
975 if (!*svc->vc_uni_pagedir_loc)
976 con_set_default_unimap(svc);
977 if (!*vc->vc_uni_pagedir_loc)
978 con_copy_unimap(vc, svc);
982 new_cols = info->var.xres / vc->vc_font.width;
983 new_rows = info->var.yres / vc->vc_font.height;
984 vc_resize(vc, new_cols, new_rows);
986 ops = info->fbcon_par;
988 * We must always set the mode. The mode of the previous console
989 * driver could be in the same resolution but we are using different
990 * hardware so we have to initialize the hardware.
992 * We need to do it in fbcon_init() to prevent screen corruption.
994 if (CON_IS_VISIBLE(vc)) {
995 if (info->fbops->fb_set_par &&
996 !(ops->flags & FBCON_FLAGS_INIT))
997 info->fbops->fb_set_par(info);
998 ops->flags |= FBCON_FLAGS_INIT;
1003 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1004 !(cap & FBINFO_HWACCEL_DISABLED))
1005 p->scrollmode = SCROLL_MOVE;
1006 else /* default to something safe */
1007 p->scrollmode = SCROLL_REDRAW;
1010 * ++guenther: console.c:vc_allocate() relies on initializing
1011 * vc_{cols,rows}, but we must not set those if we are only
1012 * resizing the console.
1015 vc->vc_cols = new_cols;
1016 vc->vc_rows = new_rows;
1020 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1022 if (vc == svc && softback_buf)
1023 fbcon_update_softback(vc);
1026 static void fbcon_deinit(struct vc_data *vc)
1028 struct display *p = &fb_display[vc->vc_num];
1035 /* ====================================================================== */
1037 /* fbcon_XXX routines - interface used by the world
1039 * This system is now divided into two levels because of complications
1040 * caused by hardware scrolling. Top level functions:
1042 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1044 * handles y values in range [0, scr_height-1] that correspond to real
1045 * screen positions. y_wrap shift means that first line of bitmap may be
1046 * anywhere on this display. These functions convert lineoffsets to
1047 * bitmap offsets and deal with the wrap-around case by splitting blits.
1049 * fbcon_bmove_physical_8() -- These functions fast implementations
1050 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1051 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1055 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1056 * Implies should only really hardware scroll in rows. Only reason for
1057 * restriction is simplicity & efficiency at the moment.
1060 static __inline__ int real_y(struct display *p, int ypos)
1062 int rows = p->vrows;
1065 return ypos < rows ? ypos : ypos - rows;
1069 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1072 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1073 struct fbcon_ops *ops = info->fbcon_par;
1075 struct display *p = &fb_display[vc->vc_num];
1078 if (fbcon_is_inactive(vc, info))
1081 if (!height || !width)
1084 /* Split blits that cross physical y_wrap boundary */
1086 y_break = p->vrows - p->yscroll;
1087 if (sy < y_break && sy + height - 1 >= y_break) {
1088 u_int b = y_break - sy;
1089 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1090 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1093 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1096 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1097 int count, int ypos, int xpos)
1099 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1100 struct display *p = &fb_display[vc->vc_num];
1101 struct fbcon_ops *ops = info->fbcon_par;
1103 if (!fbcon_is_inactive(vc, info))
1104 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1105 get_color(vc, info, scr_readw(s), 1),
1106 get_color(vc, info, scr_readw(s), 0));
1109 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1113 scr_writew(c, &chr);
1114 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1117 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1119 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1120 struct fbcon_ops *ops = info->fbcon_par;
1122 if (!fbcon_is_inactive(vc, info))
1123 ops->clear_margins(vc, info, bottom_only);
1126 static void fbcon_cursor(struct vc_data *vc, int mode)
1128 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1129 struct fbcon_ops *ops = info->fbcon_par;
1130 struct display *p = &fb_display[vc->vc_num];
1132 int c = scr_readw((u16 *) vc->vc_pos);
1134 if (fbcon_is_inactive(vc, info))
1137 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1138 if (mode & CM_SOFTBACK) {
1139 mode &= ~CM_SOFTBACK;
1143 fbcon_set_origin(vc);
1147 ops->cursor(vc, info, p, mode, y, get_color(vc, info, c, 1),
1148 get_color(vc, info, c, 0));
1149 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1152 static int scrollback_phys_max = 0;
1153 static int scrollback_max = 0;
1154 static int scrollback_current = 0;
1156 static int update_var(int con, struct fb_info *info)
1158 if (con == ((struct fbcon_ops *)info->fbcon_par)->currcon)
1159 return fb_pan_display(info, &info->var);
1164 * If no vc is existent yet, just set struct display
1166 static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1169 struct display *p = &fb_display[unit];
1170 struct display *t = &fb_display[fg_console];
1172 var->xoffset = var->yoffset = p->yscroll = 0;
1173 if (var_to_display(p, var, info))
1176 p->fontdata = t->fontdata;
1177 p->userfont = t->userfont;
1179 REFCOUNT(p->fontdata)++;
1182 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1185 struct display *p = &fb_display[vc->vc_num], *t;
1186 struct vc_data **default_mode = vc->vc_display_fg;
1187 struct vc_data *svc = *default_mode;
1188 int rows, cols, charcnt = 256;
1190 var->xoffset = var->yoffset = p->yscroll = 0;
1191 if (var_to_display(p, var, info))
1193 t = &fb_display[svc->vc_num];
1194 if (!vc->vc_font.data) {
1195 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1196 vc->vc_font.width = (*default_mode)->vc_font.width;
1197 vc->vc_font.height = (*default_mode)->vc_font.height;
1198 p->userfont = t->userfont;
1200 REFCOUNT(p->fontdata)++;
1203 charcnt = FNTCHARCNT(p->fontdata);
1205 var->activate = FB_ACTIVATE_NOW;
1206 info->var.activate = var->activate;
1207 info->var.yoffset = info->var.xoffset = 0;
1208 fb_set_var(info, var);
1210 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1211 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1212 if (charcnt == 256) {
1213 vc->vc_hi_font_mask = 0;
1215 vc->vc_hi_font_mask = 0x100;
1216 if (vc->vc_can_do_color)
1217 vc->vc_complement_mask <<= 1;
1220 if (!*svc->vc_uni_pagedir_loc)
1221 con_set_default_unimap(svc);
1222 if (!*vc->vc_uni_pagedir_loc)
1223 con_copy_unimap(vc, svc);
1225 cols = var->xres / vc->vc_font.width;
1226 rows = var->yres / vc->vc_font.height;
1227 vc_resize(vc, cols, rows);
1228 if (CON_IS_VISIBLE(vc)) {
1231 fbcon_update_softback(vc);
1235 static __inline__ void ywrap_up(struct vc_data *vc, int count)
1237 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1238 struct display *p = &fb_display[vc->vc_num];
1240 p->yscroll += count;
1241 if (p->yscroll >= p->vrows) /* Deal with wrap */
1242 p->yscroll -= p->vrows;
1243 info->var.xoffset = 0;
1244 info->var.yoffset = p->yscroll * vc->vc_font.height;
1245 info->var.vmode |= FB_VMODE_YWRAP;
1246 update_var(vc->vc_num, info);
1247 scrollback_max += count;
1248 if (scrollback_max > scrollback_phys_max)
1249 scrollback_max = scrollback_phys_max;
1250 scrollback_current = 0;
1253 static __inline__ void ywrap_down(struct vc_data *vc, int count)
1255 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1256 struct display *p = &fb_display[vc->vc_num];
1258 p->yscroll -= count;
1259 if (p->yscroll < 0) /* Deal with wrap */
1260 p->yscroll += p->vrows;
1261 info->var.xoffset = 0;
1262 info->var.yoffset = p->yscroll * vc->vc_font.height;
1263 info->var.vmode |= FB_VMODE_YWRAP;
1264 update_var(vc->vc_num, info);
1265 scrollback_max -= count;
1266 if (scrollback_max < 0)
1268 scrollback_current = 0;
1271 static __inline__ void ypan_up(struct vc_data *vc, int count)
1273 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1274 struct display *p = &fb_display[vc->vc_num];
1275 struct fbcon_ops *ops = info->fbcon_par;
1277 p->yscroll += count;
1278 if (p->yscroll > p->vrows - vc->vc_rows) {
1279 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1280 0, 0, 0, vc->vc_rows, vc->vc_cols);
1281 p->yscroll -= p->vrows - vc->vc_rows;
1283 info->var.xoffset = 0;
1284 info->var.yoffset = p->yscroll * vc->vc_font.height;
1285 info->var.vmode &= ~FB_VMODE_YWRAP;
1286 update_var(vc->vc_num, info);
1287 fbcon_clear_margins(vc, 1);
1288 scrollback_max += count;
1289 if (scrollback_max > scrollback_phys_max)
1290 scrollback_max = scrollback_phys_max;
1291 scrollback_current = 0;
1294 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1296 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1297 struct display *p = &fb_display[vc->vc_num];
1300 p->yscroll += count;
1301 if (p->yscroll > p->vrows - vc->vc_rows) {
1302 p->yscroll -= p->vrows - vc->vc_rows;
1306 info->var.xoffset = 0;
1307 info->var.yoffset = p->yscroll * vc->vc_font.height;
1308 info->var.vmode &= ~FB_VMODE_YWRAP;
1310 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1311 update_var(vc->vc_num, info);
1312 fbcon_clear_margins(vc, 1);
1313 scrollback_max += count;
1314 if (scrollback_max > scrollback_phys_max)
1315 scrollback_max = scrollback_phys_max;
1316 scrollback_current = 0;
1319 static __inline__ void ypan_down(struct vc_data *vc, int count)
1321 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1322 struct display *p = &fb_display[vc->vc_num];
1323 struct fbcon_ops *ops = info->fbcon_par;
1325 p->yscroll -= count;
1326 if (p->yscroll < 0) {
1327 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1328 0, vc->vc_rows, vc->vc_cols);
1329 p->yscroll += p->vrows - vc->vc_rows;
1331 info->var.xoffset = 0;
1332 info->var.yoffset = p->yscroll * vc->vc_font.height;
1333 info->var.vmode &= ~FB_VMODE_YWRAP;
1334 update_var(vc->vc_num, info);
1335 fbcon_clear_margins(vc, 1);
1336 scrollback_max -= count;
1337 if (scrollback_max < 0)
1339 scrollback_current = 0;
1342 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1344 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1345 struct display *p = &fb_display[vc->vc_num];
1348 p->yscroll -= count;
1349 if (p->yscroll < 0) {
1350 p->yscroll += p->vrows - vc->vc_rows;
1353 info->var.xoffset = 0;
1354 info->var.yoffset = p->yscroll * vc->vc_font.height;
1355 info->var.vmode &= ~FB_VMODE_YWRAP;
1357 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1358 update_var(vc->vc_num, info);
1359 fbcon_clear_margins(vc, 1);
1360 scrollback_max -= count;
1361 if (scrollback_max < 0)
1363 scrollback_current = 0;
1366 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1369 int count = vc->vc_rows;
1370 unsigned short *d, *s;
1374 d = (u16 *) softback_curr;
1375 if (d == (u16 *) softback_in)
1376 d = (u16 *) vc->vc_origin;
1377 n = softback_curr + delta * vc->vc_size_row;
1378 softback_lines -= delta;
1380 if (softback_curr < softback_top && n < softback_buf) {
1381 n += softback_end - softback_buf;
1382 if (n < softback_top) {
1384 (softback_top - n) / vc->vc_size_row;
1387 } else if (softback_curr >= softback_top
1388 && n < softback_top) {
1390 (softback_top - n) / vc->vc_size_row;
1394 if (softback_curr > softback_in && n >= softback_end) {
1395 n += softback_buf - softback_end;
1396 if (n > softback_in) {
1400 } else if (softback_curr <= softback_in && n > softback_in) {
1405 if (n == softback_curr)
1408 s = (u16 *) softback_curr;
1409 if (s == (u16 *) softback_in)
1410 s = (u16 *) vc->vc_origin;
1412 unsigned short *start;
1416 unsigned short attr = 1;
1419 le = advance_row(s, 1);
1422 if (attr != (c & 0xff00)) {
1425 fbcon_putcs(vc, start, s - start,
1431 if (c == scr_readw(d)) {
1433 fbcon_putcs(vc, start, s - start,
1446 fbcon_putcs(vc, start, s - start, line, x);
1448 if (d == (u16 *) softback_end)
1449 d = (u16 *) softback_buf;
1450 if (d == (u16 *) softback_in)
1451 d = (u16 *) vc->vc_origin;
1452 if (s == (u16 *) softback_end)
1453 s = (u16 *) softback_buf;
1454 if (s == (u16 *) softback_in)
1455 s = (u16 *) vc->vc_origin;
1459 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1460 int line, int count, int dy)
1462 unsigned short *s = (unsigned short *)
1463 (vc->vc_origin + vc->vc_size_row * line);
1466 unsigned short *start = s;
1467 unsigned short *le = advance_row(s, 1);
1470 unsigned short attr = 1;
1474 if (attr != (c & 0xff00)) {
1477 fbcon_putcs(vc, start, s - start,
1483 console_conditional_schedule();
1487 fbcon_putcs(vc, start, s - start, dy, x);
1488 console_conditional_schedule();
1493 static void fbcon_redraw(struct vc_data *vc, struct display *p,
1494 int line, int count, int offset)
1496 unsigned short *d = (unsigned short *)
1497 (vc->vc_origin + vc->vc_size_row * line);
1498 unsigned short *s = d + offset;
1501 unsigned short *start = s;
1502 unsigned short *le = advance_row(s, 1);
1505 unsigned short attr = 1;
1509 if (attr != (c & 0xff00)) {
1512 fbcon_putcs(vc, start, s - start,
1518 if (c == scr_readw(d)) {
1520 fbcon_putcs(vc, start, s - start,
1530 console_conditional_schedule();
1535 fbcon_putcs(vc, start, s - start, line, x);
1536 console_conditional_schedule();
1541 /* NOTE: We subtract two lines from these pointers */
1542 s -= vc->vc_size_row;
1543 d -= vc->vc_size_row;
1548 static inline void fbcon_softback_note(struct vc_data *vc, int t,
1553 if (vc->vc_num != fg_console)
1555 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1558 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1560 p = advance_row(p, 1);
1561 softback_in += vc->vc_size_row;
1562 if (softback_in == softback_end)
1563 softback_in = softback_buf;
1564 if (softback_in == softback_top) {
1565 softback_top += vc->vc_size_row;
1566 if (softback_top == softback_end)
1567 softback_top = softback_buf;
1570 softback_curr = softback_in;
1573 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1576 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1577 struct display *p = &fb_display[vc->vc_num];
1578 struct fbcon_ops *ops = info->fbcon_par;
1579 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1581 if (fbcon_is_inactive(vc, info))
1584 fbcon_cursor(vc, CM_ERASE);
1587 * ++Geert: Only use ywrap/ypan if the console is in text mode
1588 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1589 * whole screen (prevents flicker).
1594 if (count > vc->vc_rows) /* Maximum realistic size */
1595 count = vc->vc_rows;
1597 fbcon_softback_note(vc, t, count);
1598 if (logo_shown >= 0)
1600 switch (p->scrollmode) {
1602 ops->bmove(vc, info, t + count, 0, t, 0,
1603 b - t - count, vc->vc_cols);
1604 ops->clear(vc, info, b - count, 0, count,
1608 case SCROLL_WRAP_MOVE:
1609 if (b - t - count > 3 * vc->vc_rows >> 2) {
1611 fbcon_bmove(vc, 0, 0, count, 0, t,
1613 ywrap_up(vc, count);
1614 if (vc->vc_rows - b > 0)
1615 fbcon_bmove(vc, b - count, 0, b, 0,
1618 } else if (info->flags & FBINFO_READS_FAST)
1619 fbcon_bmove(vc, t + count, 0, t, 0,
1620 b - t - count, vc->vc_cols);
1623 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1626 case SCROLL_PAN_REDRAW:
1627 if ((p->yscroll + count <=
1628 2 * (p->vrows - vc->vc_rows))
1629 && ((!scroll_partial && (b - t == vc->vc_rows))
1632 3 * vc->vc_rows >> 2)))) {
1634 fbcon_redraw_move(vc, p, 0, t, count);
1635 ypan_up_redraw(vc, t, count);
1636 if (vc->vc_rows - b > 0)
1637 fbcon_redraw_move(vc, p, b - count,
1638 vc->vc_rows - b, b);
1640 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1641 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1644 case SCROLL_PAN_MOVE:
1645 if ((p->yscroll + count <=
1646 2 * (p->vrows - vc->vc_rows))
1647 && ((!scroll_partial && (b - t == vc->vc_rows))
1650 3 * vc->vc_rows >> 2)))) {
1652 fbcon_bmove(vc, 0, 0, count, 0, t,
1655 if (vc->vc_rows - b > 0)
1656 fbcon_bmove(vc, b - count, 0, b, 0,
1659 } else if (info->flags & FBINFO_READS_FAST)
1660 fbcon_bmove(vc, t + count, 0, t, 0,
1661 b - t - count, vc->vc_cols);
1664 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1669 fbcon_redraw(vc, p, t, b - t - count,
1670 count * vc->vc_cols);
1671 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1672 scr_memsetw((unsigned short *) (vc->vc_origin +
1675 vc->vc_video_erase_char,
1676 vc->vc_size_row * count);
1682 if (count > vc->vc_rows) /* Maximum realistic size */
1683 count = vc->vc_rows;
1684 if (logo_shown >= 0)
1686 switch (p->scrollmode) {
1688 ops->bmove(vc, info, t, 0, t + count, 0,
1689 b - t - count, vc->vc_cols);
1690 ops->clear(vc, info, t, 0, count, vc->vc_cols);
1693 case SCROLL_WRAP_MOVE:
1694 if (b - t - count > 3 * vc->vc_rows >> 2) {
1695 if (vc->vc_rows - b > 0)
1696 fbcon_bmove(vc, b, 0, b - count, 0,
1699 ywrap_down(vc, count);
1701 fbcon_bmove(vc, count, 0, 0, 0, t,
1703 } else if (info->flags & FBINFO_READS_FAST)
1704 fbcon_bmove(vc, t, 0, t + count, 0,
1705 b - t - count, vc->vc_cols);
1708 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1711 case SCROLL_PAN_MOVE:
1712 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1713 && ((!scroll_partial && (b - t == vc->vc_rows))
1716 3 * vc->vc_rows >> 2)))) {
1717 if (vc->vc_rows - b > 0)
1718 fbcon_bmove(vc, b, 0, b - count, 0,
1721 ypan_down(vc, count);
1723 fbcon_bmove(vc, count, 0, 0, 0, t,
1725 } else if (info->flags & FBINFO_READS_FAST)
1726 fbcon_bmove(vc, t, 0, t + count, 0,
1727 b - t - count, vc->vc_cols);
1730 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1733 case SCROLL_PAN_REDRAW:
1734 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1735 && ((!scroll_partial && (b - t == vc->vc_rows))
1738 3 * vc->vc_rows >> 2)))) {
1739 if (vc->vc_rows - b > 0)
1740 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1742 ypan_down_redraw(vc, t, count);
1744 fbcon_redraw_move(vc, p, count, t, 0);
1746 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1747 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1752 fbcon_redraw(vc, p, b - 1, b - t - count,
1753 -count * vc->vc_cols);
1754 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1755 scr_memsetw((unsigned short *) (vc->vc_origin +
1758 vc->vc_video_erase_char,
1759 vc->vc_size_row * count);
1767 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
1768 int height, int width)
1770 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1771 struct display *p = &fb_display[vc->vc_num];
1773 if (fbcon_is_inactive(vc, info))
1776 if (!width || !height)
1779 /* Split blits that cross physical y_wrap case.
1780 * Pathological case involves 4 blits, better to use recursive
1781 * code rather than unrolled case
1783 * Recursive invocations don't need to erase the cursor over and
1784 * over again, so we use fbcon_bmove_rec()
1786 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
1787 p->vrows - p->yscroll);
1790 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
1791 int dy, int dx, int height, int width, u_int y_break)
1793 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1794 struct fbcon_ops *ops = info->fbcon_par;
1797 if (sy < y_break && sy + height > y_break) {
1799 if (dy < sy) { /* Avoid trashing self */
1800 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1802 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1803 height - b, width, y_break);
1805 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1806 height - b, width, y_break);
1807 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1813 if (dy < y_break && dy + height > y_break) {
1815 if (dy < sy) { /* Avoid trashing self */
1816 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1818 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1819 height - b, width, y_break);
1821 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1822 height - b, width, y_break);
1823 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1828 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
1832 static __inline__ void updatescrollmode(struct display *p, struct fb_info *info,
1835 int fh = vc->vc_font.height;
1836 int cap = info->flags;
1837 int good_pan = (cap & FBINFO_HWACCEL_YPAN)
1838 && divides(info->fix.ypanstep, vc->vc_font.height)
1839 && info->var.yres_virtual > info->var.yres;
1840 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP)
1841 && divides(info->fix.ywrapstep, vc->vc_font.height)
1842 && divides(vc->vc_font.height, info->var.yres_virtual);
1843 int reading_fast = cap & FBINFO_READS_FAST;
1844 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && !(cap & FBINFO_HWACCEL_DISABLED);
1845 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && !(cap & FBINFO_HWACCEL_DISABLED);
1847 p->vrows = info->var.yres_virtual/fh;
1848 if (info->var.yres > (fh * (vc->vc_rows + 1)))
1849 p->vrows -= (info->var.yres - (fh * vc->vc_rows)) / fh;
1850 if ((info->var.yres % fh) && (info->var.yres_virtual % fh <
1851 info->var.yres % fh))
1854 if (good_wrap || good_pan) {
1855 if (reading_fast || fast_copyarea)
1856 p->scrollmode = good_wrap ? SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1858 p->scrollmode = good_wrap ? SCROLL_REDRAW :
1861 if (reading_fast || (fast_copyarea && !fast_imageblit))
1862 p->scrollmode = SCROLL_MOVE;
1864 p->scrollmode = SCROLL_REDRAW;
1868 static int fbcon_resize(struct vc_data *vc, unsigned int width,
1869 unsigned int height)
1871 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1872 struct display *p = &fb_display[vc->vc_num];
1873 struct fb_var_screeninfo var = info->var;
1875 int fw = vc->vc_font.width;
1876 int fh = vc->vc_font.height;
1878 var.xres = width * fw;
1879 var.yres = height * fh;
1880 x_diff = info->var.xres - var.xres;
1881 y_diff = info->var.yres - var.yres;
1882 if (x_diff < 0 || x_diff > fw || (y_diff < 0 || y_diff > fh)) {
1883 struct fb_videomode *mode;
1885 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
1886 mode = fb_find_best_mode(&var, &info->modelist);
1889 display_to_var(&var, p);
1890 fb_videomode_to_var(&var, mode);
1892 if (width > var.xres/fw || height > var.yres/fh)
1895 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
1896 if (CON_IS_VISIBLE(vc)) {
1897 var.activate = FB_ACTIVATE_NOW |
1899 fb_set_var(info, &var);
1901 var_to_display(p, &info->var, info);
1903 updatescrollmode(p, info, vc);
1907 static int fbcon_switch(struct vc_data *vc)
1909 struct fb_info *info, *old_info = NULL;
1910 struct display *p = &fb_display[vc->vc_num];
1911 struct fb_var_screeninfo var;
1912 int i, prev_console;
1914 info = registered_fb[con2fb_map[vc->vc_num]];
1918 fbcon_set_origin(vc);
1919 softback_top = softback_curr = softback_in = softback_buf;
1921 fbcon_update_softback(vc);
1924 if (logo_shown >= 0) {
1925 struct vc_data *conp2 = vc_cons[logo_shown].d;
1927 if (conp2->vc_top == logo_lines
1928 && conp2->vc_bottom == conp2->vc_rows)
1930 logo_shown = FBCON_LOGO_CANSHOW;
1933 prev_console = ((struct fbcon_ops *)info->fbcon_par)->currcon;
1934 if (prev_console != -1)
1935 old_info = registered_fb[con2fb_map[prev_console]];
1937 * FIXME: If we have multiple fbdev's loaded, we need to
1938 * update all info->currcon. Perhaps, we can place this
1939 * in a centralized structure, but this might break some
1942 * info->currcon = vc->vc_num;
1944 for (i = 0; i < FB_MAX; i++) {
1945 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
1946 struct fbcon_ops *ops = registered_fb[i]->fbcon_par;
1948 ops->currcon = vc->vc_num;
1951 memset(&var, 0, sizeof(struct fb_var_screeninfo));
1952 display_to_var(&var, p);
1953 var.activate = FB_ACTIVATE_NOW;
1956 * make sure we don't unnecessarily trip the memcmp()
1959 info->var.activate = var.activate;
1960 info->var.yoffset = info->var.xoffset = p->yscroll = 0;
1961 fb_set_var(info, &var);
1963 if (old_info != NULL && old_info != info) {
1964 if (info->fbops->fb_set_par)
1965 info->fbops->fb_set_par(info);
1966 fbcon_del_cursor_timer(old_info);
1967 fbcon_add_cursor_timer(info);
1970 set_blitting_type(vc, info, p);
1971 ((struct fbcon_ops *)info->fbcon_par)->cursor_reset = 1;
1973 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1974 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1975 updatescrollmode(p, info, vc);
1977 switch (p->scrollmode) {
1978 case SCROLL_WRAP_MOVE:
1979 scrollback_phys_max = p->vrows - vc->vc_rows;
1981 case SCROLL_PAN_MOVE:
1982 case SCROLL_PAN_REDRAW:
1983 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
1984 if (scrollback_phys_max < 0)
1985 scrollback_phys_max = 0;
1988 scrollback_phys_max = 0;
1992 scrollback_current = 0;
1994 update_var(vc->vc_num, info);
1995 fbcon_set_palette(vc, color_table);
1996 fbcon_clear_margins(vc, 0);
1998 if (logo_shown == FBCON_LOGO_DRAW) {
2000 logo_shown = fg_console;
2001 /* This is protected above by initmem_freed */
2004 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2005 vc->vc_size_row * (vc->vc_bottom -
2012 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2016 unsigned short charmask = vc->vc_hi_font_mask ?
2018 unsigned short oldc;
2020 oldc = vc->vc_video_erase_char;
2021 vc->vc_video_erase_char &= charmask;
2022 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2023 vc->vc_video_erase_char = oldc;
2027 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2029 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2030 struct fbcon_ops *ops = info->fbcon_par;
2033 struct fb_var_screeninfo var = info->var;
2038 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2039 fb_set_var(info, &var);
2044 if (!fbcon_is_inactive(vc, info)) {
2045 if (ops->blank_state != blank) {
2046 ops->blank_state = blank;
2047 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2048 ops->cursor_flash = (!blank);
2050 if (fb_blank(info, blank))
2051 fbcon_generic_blank(vc, info, blank);
2059 fbcon_add_cursor_timer(info);
2061 fbcon_del_cursor_timer(info);
2066 static void fbcon_free_font(struct display *p)
2068 if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
2069 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
2074 static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2076 u8 *fontdata = vc->vc_font.data;
2077 u8 *data = font->data;
2080 font->width = vc->vc_font.width;
2081 font->height = vc->vc_font.height;
2082 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2086 if (font->width <= 8) {
2087 j = vc->vc_font.height;
2088 for (i = 0; i < font->charcount; i++) {
2089 memcpy(data, fontdata, j);
2090 memset(data + j, 0, 32 - j);
2094 } else if (font->width <= 16) {
2095 j = vc->vc_font.height * 2;
2096 for (i = 0; i < font->charcount; i++) {
2097 memcpy(data, fontdata, j);
2098 memset(data + j, 0, 64 - j);
2102 } else if (font->width <= 24) {
2103 for (i = 0; i < font->charcount; i++) {
2104 for (j = 0; j < vc->vc_font.height; j++) {
2105 *data++ = fontdata[0];
2106 *data++ = fontdata[1];
2107 *data++ = fontdata[2];
2108 fontdata += sizeof(u32);
2110 memset(data, 0, 3 * (32 - j));
2111 data += 3 * (32 - j);
2114 j = vc->vc_font.height * 4;
2115 for (i = 0; i < font->charcount; i++) {
2116 memcpy(data, fontdata, j);
2117 memset(data + j, 0, 128 - j);
2125 static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2126 const u8 * data, int userfont)
2128 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2129 struct display *p = &fb_display[vc->vc_num];
2132 char *old_data = NULL;
2134 if (CON_IS_VISIBLE(vc) && softback_lines)
2135 fbcon_set_origin(vc);
2137 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2139 old_data = vc->vc_font.data;
2141 cnt = FNTCHARCNT(data);
2144 vc->vc_font.data = (void *)(p->fontdata = data);
2145 if ((p->userfont = userfont))
2147 vc->vc_font.width = w;
2148 vc->vc_font.height = h;
2149 if (vc->vc_hi_font_mask && cnt == 256) {
2150 vc->vc_hi_font_mask = 0;
2151 if (vc->vc_can_do_color) {
2152 vc->vc_complement_mask >>= 1;
2153 vc->vc_s_complement_mask >>= 1;
2156 /* ++Edmund: reorder the attribute bits */
2157 if (vc->vc_can_do_color) {
2158 unsigned short *cp =
2159 (unsigned short *) vc->vc_origin;
2160 int count = vc->vc_screenbuf_size / 2;
2162 for (; count > 0; count--, cp++) {
2164 scr_writew(((c & 0xfe00) >> 1) |
2167 c = vc->vc_video_erase_char;
2168 vc->vc_video_erase_char =
2169 ((c & 0xfe00) >> 1) | (c & 0xff);
2172 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2173 vc->vc_hi_font_mask = 0x100;
2174 if (vc->vc_can_do_color) {
2175 vc->vc_complement_mask <<= 1;
2176 vc->vc_s_complement_mask <<= 1;
2179 /* ++Edmund: reorder the attribute bits */
2181 unsigned short *cp =
2182 (unsigned short *) vc->vc_origin;
2183 int count = vc->vc_screenbuf_size / 2;
2185 for (; count > 0; count--, cp++) {
2186 unsigned short newc;
2188 if (vc->vc_can_do_color)
2190 ((c & 0xff00) << 1) | (c &
2194 scr_writew(newc, cp);
2196 c = vc->vc_video_erase_char;
2197 if (vc->vc_can_do_color) {
2198 vc->vc_video_erase_char =
2199 ((c & 0xff00) << 1) | (c & 0xff);
2202 vc->vc_video_erase_char = c & ~0x100;
2208 /* reset wrap/pan */
2209 info->var.xoffset = info->var.yoffset = p->yscroll = 0;
2210 vc_resize(vc, info->var.xres / w, info->var.yres / h);
2211 if (CON_IS_VISIBLE(vc) && softback_buf)
2212 fbcon_update_softback(vc);
2213 } else if (CON_IS_VISIBLE(vc)
2214 && vc->vc_mode == KD_TEXT) {
2215 fbcon_clear_margins(vc, 0);
2219 if (old_data && (--REFCOUNT(old_data) == 0))
2220 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2224 static int fbcon_copy_font(struct vc_data *vc, int con)
2226 struct display *od = &fb_display[con];
2227 struct console_font *f = &vc->vc_font;
2229 if (od->fontdata == f->data)
2230 return 0; /* already the same font... */
2231 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2235 * User asked to set font; we are guaranteed that
2236 * a) width and height are in range 1..32
2237 * b) charcount does not exceed 512
2238 * but lets not assume that, since someone might someday want to use larger
2239 * fonts. And charcount of 512 is small for unicode support.
2241 * However, user space gives the font in 32 rows , regardless of
2242 * actual font height. So a new API is needed if support for larger fonts
2243 * is ever implemented.
2246 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2248 unsigned charcount = font->charcount;
2249 int w = font->width;
2250 int h = font->height;
2253 u8 *new_data, *data = font->data;
2254 int pitch = (font->width+7) >> 3;
2256 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2257 * If not this check should be changed to charcount < 256 */
2258 if (charcount != 256 && charcount != 512)
2261 size = h * pitch * charcount;
2263 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2268 new_data += FONT_EXTRA_WORDS * sizeof(int);
2269 FNTSIZE(new_data) = size;
2270 FNTCHARCNT(new_data) = charcount;
2271 REFCOUNT(new_data) = 0; /* usage counter */
2272 for (i=0; i< charcount; i++) {
2273 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2276 /* Since linux has a nice crc32 function use it for counting font
2278 csum = crc32(0, new_data, size);
2280 FNTSUM(new_data) = csum;
2281 /* Check if the same font is on some other console already */
2282 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2283 struct vc_data *tmp = vc_cons[i].d;
2285 if (fb_display[i].userfont &&
2286 fb_display[i].fontdata &&
2287 FNTSUM(fb_display[i].fontdata) == csum &&
2288 FNTSIZE(fb_display[i].fontdata) == size &&
2289 tmp->vc_font.width == w &&
2290 !memcmp(fb_display[i].fontdata, new_data, size)) {
2291 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2292 new_data = (u8 *)fb_display[i].fontdata;
2296 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2299 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2301 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2302 const struct font_desc *f;
2305 f = get_default_font(info->var.xres, info->var.yres);
2306 else if (!(f = find_font(name)))
2309 font->width = f->width;
2310 font->height = f->height;
2311 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2314 static u16 palette_red[16];
2315 static u16 palette_green[16];
2316 static u16 palette_blue[16];
2318 static struct fb_cmap palette_cmap = {
2319 0, 16, palette_red, palette_green, palette_blue, NULL
2322 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2324 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2328 if (fbcon_is_inactive(vc, info))
2331 if (!CON_IS_VISIBLE(vc))
2334 depth = fb_get_color_depth(&info->var, &info->fix);
2336 for (i = j = 0; i < 16; i++) {
2338 val = vc->vc_palette[j++];
2339 palette_red[k] = (val << 8) | val;
2340 val = vc->vc_palette[j++];
2341 palette_green[k] = (val << 8) | val;
2342 val = vc->vc_palette[j++];
2343 palette_blue[k] = (val << 8) | val;
2345 palette_cmap.len = 16;
2346 palette_cmap.start = 0;
2348 * If framebuffer is capable of less than 16 colors,
2349 * use default palette of fbcon.
2352 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2354 return fb_set_cmap(&palette_cmap, info);
2357 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2362 if (vc->vc_num != fg_console || !softback_lines)
2363 return (u16 *) (vc->vc_origin + offset);
2364 line = offset / vc->vc_size_row;
2365 if (line >= softback_lines)
2366 return (u16 *) (vc->vc_origin + offset -
2367 softback_lines * vc->vc_size_row);
2368 p = softback_curr + offset;
2369 if (p >= softback_end)
2370 p += softback_buf - softback_end;
2374 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2380 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2381 unsigned long offset = (pos - vc->vc_origin) / 2;
2383 x = offset % vc->vc_cols;
2384 y = offset / vc->vc_cols;
2385 if (vc->vc_num == fg_console)
2386 y += softback_lines;
2387 ret = pos + (vc->vc_cols - x) * 2;
2388 } else if (vc->vc_num == fg_console && softback_lines) {
2389 unsigned long offset = pos - softback_curr;
2391 if (pos < softback_curr)
2392 offset += softback_end - softback_buf;
2394 x = offset % vc->vc_cols;
2395 y = offset / vc->vc_cols;
2396 ret = pos + (vc->vc_cols - x) * 2;
2397 if (ret == softback_end)
2399 if (ret == softback_in)
2400 ret = vc->vc_origin;
2402 /* Should not happen */
2404 ret = vc->vc_origin;
2413 /* As we might be inside of softback, we may work with non-contiguous buffer,
2414 that's why we have to use a separate routine. */
2415 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2418 u16 a = scr_readw(p);
2419 if (!vc->vc_can_do_color)
2421 else if (vc->vc_hi_font_mask == 0x100)
2422 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2423 (((a) & 0x0e00) << 4);
2425 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2426 (((a) & 0x0700) << 4);
2428 if (p == (u16 *) softback_end)
2429 p = (u16 *) softback_buf;
2430 if (p == (u16 *) softback_in)
2431 p = (u16 *) vc->vc_origin;
2435 static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2437 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2438 struct display *p = &fb_display[fg_console];
2439 int offset, limit, scrollback_old;
2442 if (vc->vc_num != fg_console)
2444 if (vc->vc_mode != KD_TEXT || !lines)
2446 if (logo_shown >= 0) {
2447 struct vc_data *conp2 = vc_cons[logo_shown].d;
2449 if (conp2->vc_top == logo_lines
2450 && conp2->vc_bottom == conp2->vc_rows)
2452 if (logo_shown == vc->vc_num) {
2458 logo_lines * vc->vc_size_row;
2459 for (i = 0; i < logo_lines; i++) {
2460 if (p == softback_top)
2462 if (p == softback_buf)
2464 p -= vc->vc_size_row;
2465 q -= vc->vc_size_row;
2466 scr_memcpyw((u16 *) q, (u16 *) p,
2470 update_region(vc, vc->vc_origin,
2471 logo_lines * vc->vc_cols);
2473 logo_shown = FBCON_LOGO_CANSHOW;
2475 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2476 fbcon_redraw_softback(vc, p, lines);
2477 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2481 if (!scrollback_phys_max)
2484 scrollback_old = scrollback_current;
2485 scrollback_current -= lines;
2486 if (scrollback_current < 0)
2487 scrollback_current = 0;
2488 else if (scrollback_current > scrollback_max)
2489 scrollback_current = scrollback_max;
2490 if (scrollback_current == scrollback_old)
2493 if (fbcon_is_inactive(vc, info))
2496 fbcon_cursor(vc, CM_ERASE);
2498 offset = p->yscroll - scrollback_current;
2500 switch (p->scrollmode) {
2501 case SCROLL_WRAP_MOVE:
2502 info->var.vmode |= FB_VMODE_YWRAP;
2504 case SCROLL_PAN_MOVE:
2505 case SCROLL_PAN_REDRAW:
2506 limit -= vc->vc_rows;
2507 info->var.vmode &= ~FB_VMODE_YWRAP;
2512 else if (offset >= limit)
2514 info->var.xoffset = 0;
2515 info->var.yoffset = offset * vc->vc_font.height;
2516 update_var(vc->vc_num, info);
2517 if (!scrollback_current)
2518 fbcon_cursor(vc, CM_DRAW);
2522 static int fbcon_set_origin(struct vc_data *vc)
2525 fbcon_scrolldelta(vc, softback_lines);
2529 static void fbcon_suspended(struct fb_info *info)
2531 struct vc_data *vc = NULL;
2532 struct fbcon_ops *ops = info->fbcon_par;
2534 if (!ops || ops->currcon < 0)
2536 vc = vc_cons[ops->currcon].d;
2538 /* Clear cursor, restore saved data */
2539 fbcon_cursor(vc, CM_ERASE);
2542 static void fbcon_resumed(struct fb_info *info)
2545 struct fbcon_ops *ops = info->fbcon_par;
2547 if (!ops || ops->currcon < 0)
2549 vc = vc_cons[ops->currcon].d;
2554 static void fbcon_modechanged(struct fb_info *info)
2556 struct fbcon_ops *ops = info->fbcon_par;
2561 if (!ops || ops->currcon < 0)
2563 vc = vc_cons[ops->currcon].d;
2564 if (vc->vc_mode != KD_TEXT || registered_fb[con2fb_map[ops->currcon]] != info)
2567 p = &fb_display[vc->vc_num];
2569 info->var.xoffset = info->var.yoffset = p->yscroll = 0;
2571 if (CON_IS_VISIBLE(vc)) {
2572 var_to_display(p, &info->var, info);
2573 cols = info->var.xres / vc->vc_font.width;
2574 rows = info->var.yres / vc->vc_font.height;
2575 vc_resize(vc, cols, rows);
2576 updatescrollmode(p, info, vc);
2578 scrollback_current = 0;
2579 update_var(vc->vc_num, info);
2580 fbcon_set_palette(vc, color_table);
2583 fbcon_update_softback(vc);
2587 static void fbcon_set_all_vcs(struct fb_info *info)
2589 struct fbcon_ops *ops = info->fbcon_par;
2594 if (!ops || ops->currcon < 0)
2597 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2599 if (!vc || vc->vc_mode != KD_TEXT ||
2600 registered_fb[con2fb_map[i]] != info)
2603 p = &fb_display[vc->vc_num];
2605 info->var.xoffset = info->var.yoffset = p->yscroll = 0;
2606 var_to_display(p, &info->var, info);
2607 cols = info->var.xres / vc->vc_font.width;
2608 rows = info->var.yres / vc->vc_font.height;
2609 vc_resize(vc, cols, rows);
2611 if (CON_IS_VISIBLE(vc)) {
2612 updatescrollmode(p, info, vc);
2614 scrollback_current = 0;
2615 update_var(vc->vc_num, info);
2616 fbcon_set_palette(vc, color_table);
2619 fbcon_update_softback(vc);
2624 static int fbcon_mode_deleted(struct fb_info *info,
2625 struct fb_videomode *mode)
2627 struct fb_info *fb_info;
2629 int i, j, found = 0;
2631 /* before deletion, ensure that mode is not in use */
2632 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2636 fb_info = registered_fb[j];
2637 if (fb_info != info)
2642 if (fb_mode_is_equal(p->mode, mode)) {
2650 static int fbcon_fb_registered(int idx)
2654 if (info_idx == -1) {
2655 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2656 if (con2fb_map_boot[i] == idx) {
2662 ret = fbcon_takeover(1);
2664 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2665 if (con2fb_map_boot[i] == idx)
2666 set_con2fb_map(i, idx, 0);
2673 static void fbcon_fb_blanked(struct fb_info *info, int blank)
2675 struct fbcon_ops *ops = info->fbcon_par;
2678 if (!ops || ops->currcon < 0)
2681 vc = vc_cons[ops->currcon].d;
2682 if (vc->vc_mode != KD_TEXT ||
2683 registered_fb[con2fb_map[ops->currcon]] != info)
2686 if (CON_IS_VISIBLE(vc)) {
2690 do_unblank_screen(0);
2692 ops->blank_state = blank;
2695 static void fbcon_new_modelist(struct fb_info *info)
2699 struct fb_var_screeninfo var;
2700 struct fb_videomode *mode;
2702 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2703 if (registered_fb[con2fb_map[i]] != info)
2705 if (!fb_display[i].mode)
2708 display_to_var(&var, &fb_display[i]);
2709 mode = fb_find_nearest_mode(&var, &info->modelist);
2710 fb_videomode_to_var(&var, mode);
2713 fbcon_set_disp(info, &var, vc);
2715 fbcon_preset_disp(info, &var, i);
2720 static int fbcon_event_notify(struct notifier_block *self,
2721 unsigned long action, void *data)
2723 struct fb_event *event = data;
2724 struct fb_info *info = event->info;
2725 struct fb_videomode *mode;
2726 struct fb_con2fbmap *con2fb;
2730 case FB_EVENT_SUSPEND:
2731 fbcon_suspended(info);
2733 case FB_EVENT_RESUME:
2734 fbcon_resumed(info);
2736 case FB_EVENT_MODE_CHANGE:
2737 fbcon_modechanged(info);
2739 case FB_EVENT_MODE_CHANGE_ALL:
2740 fbcon_set_all_vcs(info);
2742 case FB_EVENT_MODE_DELETE:
2744 ret = fbcon_mode_deleted(info, mode);
2746 case FB_EVENT_FB_REGISTERED:
2747 ret = fbcon_fb_registered(info->node);
2749 case FB_EVENT_SET_CONSOLE_MAP:
2750 con2fb = event->data;
2751 ret = set_con2fb_map(con2fb->console - 1,
2752 con2fb->framebuffer, 1);
2754 case FB_EVENT_GET_CONSOLE_MAP:
2755 con2fb = event->data;
2756 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
2758 case FB_EVENT_BLANK:
2759 fbcon_fb_blanked(info, *(int *)event->data);
2761 case FB_EVENT_NEW_MODELIST:
2762 fbcon_new_modelist(info);
2770 * The console `switch' structure for the frame buffer based console
2773 static const struct consw fb_con = {
2774 .owner = THIS_MODULE,
2775 .con_startup = fbcon_startup,
2776 .con_init = fbcon_init,
2777 .con_deinit = fbcon_deinit,
2778 .con_clear = fbcon_clear,
2779 .con_putc = fbcon_putc,
2780 .con_putcs = fbcon_putcs,
2781 .con_cursor = fbcon_cursor,
2782 .con_scroll = fbcon_scroll,
2783 .con_bmove = fbcon_bmove,
2784 .con_switch = fbcon_switch,
2785 .con_blank = fbcon_blank,
2786 .con_font_set = fbcon_set_font,
2787 .con_font_get = fbcon_get_font,
2788 .con_font_default = fbcon_set_def_font,
2789 .con_font_copy = fbcon_copy_font,
2790 .con_set_palette = fbcon_set_palette,
2791 .con_scrolldelta = fbcon_scrolldelta,
2792 .con_set_origin = fbcon_set_origin,
2793 .con_invert_region = fbcon_invert_region,
2794 .con_screen_pos = fbcon_screen_pos,
2795 .con_getxy = fbcon_getxy,
2796 .con_resize = fbcon_resize,
2799 static struct notifier_block fbcon_event_notifier = {
2800 .notifier_call = fbcon_event_notify,
2803 static int __init fb_console_init(void)
2807 acquire_console_sem();
2808 fb_register_client(&fbcon_event_notifier);
2809 release_console_sem();
2811 for (i = 0; i < MAX_NR_CONSOLES; i++)
2814 if (num_registered_fb) {
2815 for (i = 0; i < FB_MAX; i++) {
2816 if (registered_fb[i] != NULL) {
2827 module_init(fb_console_init);
2831 static void __exit fb_console_exit(void)
2833 acquire_console_sem();
2834 fb_unregister_client(&fbcon_event_notifier);
2835 release_console_sem();
2836 give_up_console(&fb_con);
2839 module_exit(fb_console_exit);
2843 MODULE_LICENSE("GPL");