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 ARM_CURSOR_BLINK_RATE (10)
146 #define ATARI_CURSOR_BLINK_RATE (42)
147 #define MAC_CURSOR_BLINK_RATE (32)
148 #define DEFAULT_CURSOR_BLINK_RATE (20)
150 static int vbl_cursor_cnt;
152 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
155 * Interface used by the world
158 static const char *fbcon_startup(void);
159 static void fbcon_init(struct vc_data *vc, int init);
160 static void fbcon_deinit(struct vc_data *vc);
161 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
163 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
164 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
165 int count, int ypos, int xpos);
166 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
167 static void fbcon_cursor(struct vc_data *vc, int mode);
168 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
170 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
171 int height, int width);
172 static int fbcon_switch(struct vc_data *vc);
173 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
174 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
175 static int fbcon_scrolldelta(struct vc_data *vc, int lines);
180 static __inline__ int real_y(struct display *p, int ypos);
181 static __inline__ void ywrap_up(struct vc_data *vc, int count);
182 static __inline__ void ywrap_down(struct vc_data *vc, int count);
183 static __inline__ void ypan_up(struct vc_data *vc, int count);
184 static __inline__ void ypan_down(struct vc_data *vc, int count);
185 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
186 int dy, int dx, int height, int width, u_int y_break);
187 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
189 static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
191 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
192 int line, int count, int dy);
196 * On the Macintoy, there may or may not be a working VBL int. We need to probe
198 static int vbl_detected;
200 static irqreturn_t fb_vbl_detect(int irq, void *dummy, struct pt_regs *fp)
207 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
209 struct fbcon_ops *ops = info->fbcon_par;
211 return (info->state != FBINFO_STATE_RUNNING ||
212 vc->vc_mode != KD_TEXT || ops->graphics);
215 static inline int get_color(struct vc_data *vc, struct fb_info *info,
218 int depth = fb_get_color_depth(&info->var);
221 if (console_blanked) {
222 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
224 c = vc->vc_video_erase_char & charmask;
228 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
229 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
235 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? 1 : 0;
236 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : 1;
241 color = (is_fg) ? fg : bg;
246 * Scale down 16-colors to 4 colors. Default 4-color palette
253 * Last 8 entries of default 16-color palette is a more intense
254 * version of the first 8 (i.e., same chrominance, different
265 static void fb_flashcursor(void *private)
267 struct fb_info *info = private;
268 struct fbcon_ops *ops = info->fbcon_par;
270 struct vc_data *vc = NULL;
274 if (ops->currcon != -1)
275 vc = vc_cons[ops->currcon].d;
277 if (!vc || !CON_IS_VISIBLE(vc) ||
278 fbcon_is_inactive(vc, info) ||
279 registered_fb[con2fb_map[vc->vc_num]] != info)
281 acquire_console_sem();
282 p = &fb_display[vc->vc_num];
283 c = scr_readw((u16 *) vc->vc_pos);
284 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
286 ops->cursor(vc, info, p, mode, softback_lines, get_color(vc, info, c, 1),
287 get_color(vc, info, c, 0));
288 release_console_sem();
291 #if (defined(__arm__) && defined(IRQ_VSYNCPULSE)) || defined(CONFIG_ATARI) || defined(CONFIG_MAC)
292 static int cursor_blink_rate;
293 static irqreturn_t fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp)
295 struct fb_info *info = dev_id;
297 if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) {
298 schedule_work(&info->queue);
299 vbl_cursor_cnt = cursor_blink_rate;
305 static void cursor_timer_handler(unsigned long dev_addr)
307 struct fb_info *info = (struct fb_info *) dev_addr;
308 struct fbcon_ops *ops = info->fbcon_par;
310 schedule_work(&info->queue);
311 mod_timer(&ops->cursor_timer, jiffies + HZ/5);
315 static int __init fb_console_setup(char *this_opt)
320 if (!this_opt || !*this_opt)
323 while ((options = strsep(&this_opt, ",")) != NULL) {
324 if (!strncmp(options, "font:", 5))
325 strcpy(fontname, options + 5);
327 if (!strncmp(options, "scrollback:", 11)) {
330 fbcon_softback_size = simple_strtoul(options, &options, 0);
331 if (*options == 'k' || *options == 'K') {
332 fbcon_softback_size *= 1024;
342 if (!strncmp(options, "map:", 4)) {
345 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
349 (options[j++]-'0') % FB_MAX;
354 if (!strncmp(options, "vc:", 3)) {
357 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
360 if (*options++ == '-')
361 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
362 fbcon_is_default = 0;
368 __setup("fbcon=", fb_console_setup);
371 static int search_fb_in_map(int idx)
375 for (i = 0; i < MAX_NR_CONSOLES; i++) {
376 if (con2fb_map[i] == idx)
382 static int search_for_mapped_con(void)
386 for (i = 0; i < MAX_NR_CONSOLES; i++) {
387 if (con2fb_map[i] != -1)
393 static int fbcon_takeover(int show_logo)
397 if (!num_registered_fb)
401 logo_shown = FBCON_LOGO_DONTSHOW;
403 for (i = first_fb_vc; i <= last_fb_vc; i++)
404 con2fb_map[i] = info_idx;
406 err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
409 for (i = first_fb_vc; i <= last_fb_vc; i++) {
418 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
419 int cols, int rows, int new_cols, int new_rows)
421 /* Need to make room for the logo */
422 int cnt, erase = vc->vc_video_erase_char, step;
423 unsigned short *save = NULL, *r, *q;
426 * remove underline attribute from erase character
427 * if black and white framebuffer.
429 if (fb_get_color_depth(&info->var) == 1)
431 logo_height = fb_prepare_logo(info);
432 logo_lines = (logo_height + vc->vc_font.height - 1) /
434 q = (unsigned short *) (vc->vc_origin +
435 vc->vc_size_row * rows);
436 step = logo_lines * cols;
437 for (r = q - logo_lines * cols; r < q; r++)
438 if (scr_readw(r) != vc->vc_video_erase_char)
440 if (r != q && new_rows >= rows + logo_lines) {
441 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
443 int i = cols < new_cols ? cols : new_cols;
444 scr_memsetw(save, erase, logo_lines * new_cols * 2);
446 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
447 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
452 /* We can scroll screen down */
454 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
455 scr_memcpyw(r + step, r, vc->vc_size_row);
459 vc->vc_y += logo_lines;
460 vc->vc_pos += logo_lines * vc->vc_size_row;
463 scr_memsetw((unsigned short *) vc->vc_origin,
465 vc->vc_size_row * logo_lines);
467 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
468 fbcon_clear_margins(vc, 0);
473 q = (unsigned short *) (vc->vc_origin +
476 scr_memcpyw(q, save, logo_lines * new_cols * 2);
477 vc->vc_y += logo_lines;
478 vc->vc_pos += logo_lines * vc->vc_size_row;
482 if (logo_lines > vc->vc_bottom) {
483 logo_shown = FBCON_LOGO_CANSHOW;
485 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
486 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
487 logo_shown = FBCON_LOGO_DRAW;
488 vc->vc_top = logo_lines;
492 #ifdef CONFIG_FB_TILEBLITTING
493 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
496 struct fbcon_ops *ops = info->fbcon_par;
498 if ((info->flags & FBINFO_MISC_TILEBLITTING))
499 fbcon_set_tileops(vc, info, p, ops);
501 fbcon_set_bitops(ops);
504 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
507 struct fbcon_ops *ops = info->fbcon_par;
509 info->flags &= ~FBINFO_MISC_TILEBLITTING;
510 fbcon_set_bitops(ops);
512 #endif /* CONFIG_MISC_TILEBLITTING */
515 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
516 int unit, int oldidx)
518 struct fbcon_ops *ops = NULL;
521 if (!try_module_get(info->fbops->owner))
524 if (!err && info->fbops->fb_open &&
525 info->fbops->fb_open(info, 0))
529 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
535 memset(ops, 0, sizeof(struct fbcon_ops));
536 info->fbcon_par = ops;
537 set_blitting_type(vc, info, NULL);
541 con2fb_map[unit] = oldidx;
542 module_put(info->fbops->owner);
548 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
549 struct fb_info *newinfo, int unit,
550 int oldidx, int found)
552 struct fbcon_ops *ops = oldinfo->fbcon_par;
555 if (oldinfo->fbops->fb_release &&
556 oldinfo->fbops->fb_release(oldinfo, 0)) {
557 con2fb_map[unit] = oldidx;
558 if (!found && newinfo->fbops->fb_release)
559 newinfo->fbops->fb_release(newinfo, 0);
561 module_put(newinfo->fbops->owner);
566 if (oldinfo->queue.func == fb_flashcursor)
567 del_timer_sync(&ops->cursor_timer);
569 kfree(ops->cursor_state.mask);
570 kfree(ops->cursor_data);
571 kfree(oldinfo->fbcon_par);
572 oldinfo->fbcon_par = NULL;
573 module_put(oldinfo->fbops->owner);
579 static void con2fb_init_newinfo(struct fb_info *info)
581 if (!info->queue.func || info->queue.func == fb_flashcursor) {
582 struct fbcon_ops *ops = info->fbcon_par;
584 if (!info->queue.func)
585 INIT_WORK(&info->queue, fb_flashcursor, info);
587 init_timer(&ops->cursor_timer);
588 ops->cursor_timer.function = cursor_timer_handler;
589 ops->cursor_timer.expires = jiffies + HZ / 5;
590 ops->cursor_timer.data = (unsigned long ) info;
591 add_timer(&ops->cursor_timer);
595 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
596 int unit, int show_logo)
598 struct fbcon_ops *ops = info->fbcon_par;
600 ops->currcon = fg_console;
602 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT))
603 info->fbops->fb_set_par(info);
605 ops->flags |= FBCON_FLAGS_INIT;
609 fbcon_set_disp(info, &info->var, vc);
611 fbcon_preset_disp(info, &info->var, unit);
614 struct vc_data *fg_vc = vc_cons[fg_console].d;
615 struct fb_info *fg_info =
616 registered_fb[con2fb_map[fg_console]];
618 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
619 fg_vc->vc_rows, fg_vc->vc_cols,
623 update_screen(vc_cons[fg_console].d);
627 * set_con2fb_map - map console to frame buffer device
628 * @unit: virtual console number to map
629 * @newidx: frame buffer index to map virtual console to
630 * @user: user request
632 * Maps a virtual console @unit to a frame buffer device
635 static int set_con2fb_map(int unit, int newidx, int user)
637 struct vc_data *vc = vc_cons[unit].d;
638 int oldidx = con2fb_map[unit];
639 struct fb_info *info = registered_fb[newidx];
640 struct fb_info *oldinfo = NULL;
643 if (oldidx == newidx)
649 if (!err && !search_for_mapped_con()) {
651 return fbcon_takeover(0);
655 oldinfo = registered_fb[oldidx];
657 found = search_fb_in_map(newidx);
659 acquire_console_sem();
660 con2fb_map[unit] = newidx;
662 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
666 * If old fb is not mapped to any of the consoles,
667 * fbcon should release it.
669 if (!err && oldinfo && !search_fb_in_map(oldidx))
670 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
674 int show_logo = (fg_console == 0 && !user &&
675 logo_shown != FBCON_LOGO_DONTSHOW);
678 con2fb_init_newinfo(info);
679 con2fb_map_boot[unit] = newidx;
680 con2fb_init_display(vc, info, unit, show_logo);
683 release_console_sem();
688 * Low Level Operations
690 /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
691 static int var_to_display(struct display *disp,
692 struct fb_var_screeninfo *var,
693 struct fb_info *info)
695 disp->xres_virtual = var->xres_virtual;
696 disp->yres_virtual = var->yres_virtual;
697 disp->bits_per_pixel = var->bits_per_pixel;
698 disp->grayscale = var->grayscale;
699 disp->nonstd = var->nonstd;
700 disp->accel_flags = var->accel_flags;
701 disp->height = var->height;
702 disp->width = var->width;
703 disp->red = var->red;
704 disp->green = var->green;
705 disp->blue = var->blue;
706 disp->transp = var->transp;
707 disp->rotate = var->rotate;
708 disp->mode = fb_match_mode(var, &info->modelist);
709 if (disp->mode == NULL)
710 /* This should not happen */
715 static void display_to_var(struct fb_var_screeninfo *var,
716 struct display *disp)
718 fb_videomode_to_var(var, disp->mode);
719 var->xres_virtual = disp->xres_virtual;
720 var->yres_virtual = disp->yres_virtual;
721 var->bits_per_pixel = disp->bits_per_pixel;
722 var->grayscale = disp->grayscale;
723 var->nonstd = disp->nonstd;
724 var->accel_flags = disp->accel_flags;
725 var->height = disp->height;
726 var->width = disp->width;
727 var->red = disp->red;
728 var->green = disp->green;
729 var->blue = disp->blue;
730 var->transp = disp->transp;
731 var->rotate = disp->rotate;
734 static const char *fbcon_startup(void)
736 const char *display_desc = "frame buffer device";
737 struct display *p = &fb_display[fg_console];
738 struct vc_data *vc = vc_cons[fg_console].d;
739 struct font_desc *font = NULL;
740 struct module *owner;
741 struct fb_info *info = NULL;
742 struct fbcon_ops *ops;
748 * If num_registered_fb is zero, this is a call for the dummy part.
749 * The frame buffer devices weren't initialized yet.
751 if (!num_registered_fb || info_idx == -1)
754 * Instead of blindly using registered_fb[0], we use info_idx, set by
757 info = registered_fb[info_idx];
761 owner = info->fbops->owner;
762 if (!try_module_get(owner))
764 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
769 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
775 memset(ops, 0, sizeof(struct fbcon_ops));
778 info->fbcon_par = ops;
779 set_blitting_type(vc, info, NULL);
781 if (info->fix.type != FB_TYPE_TEXT) {
782 if (fbcon_softback_size) {
786 kmalloc(fbcon_softback_size,
789 fbcon_softback_size = 0;
795 kfree((void *) softback_buf);
801 softback_in = softback_top = softback_curr =
806 /* Setup default font */
808 if (!fontname[0] || !(font = find_font(fontname)))
809 font = get_default_font(info->var.xres,
811 vc->vc_font.width = font->width;
812 vc->vc_font.height = font->height;
813 vc->vc_font.data = p->fontdata = font->data;
814 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
817 cols = info->var.xres / vc->vc_font.width;
818 rows = info->var.yres / vc->vc_font.height;
819 vc_resize(vc, cols, rows);
821 DPRINTK("mode: %s\n", info->fix.id);
822 DPRINTK("visual: %d\n", info->fix.visual);
823 DPRINTK("res: %dx%d-%d\n", info->var.xres,
825 info->var.bits_per_pixel);
829 cursor_blink_rate = ATARI_CURSOR_BLINK_RATE;
831 request_irq(IRQ_AUTO_4, fb_vbl_handler,
832 IRQ_TYPE_PRIO, "framebuffer vbl",
835 #endif /* CONFIG_ATARI */
839 * On a Macintoy, the VBL interrupt may or may not be active.
840 * As interrupt based cursor is more reliable and race free, we
841 * probe for VBL interrupts.
846 * Probe for VBL: set temp. handler ...
848 irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0,
849 "framebuffer vbl", info);
853 * ... and spin for 20 ms ...
855 while (!vbl_detected && ++ct < 1000)
860 ("fbcon_startup: No VBL detected, using timer based cursor.\n");
862 free_irq(IRQ_MAC_VBL, fb_vbl_detect);
866 * interrupt based cursor ok
868 cursor_blink_rate = MAC_CURSOR_BLINK_RATE;
870 request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0,
871 "framebuffer vbl", info);
874 * VBL not detected: fall through, use timer based cursor
879 #endif /* CONFIG_MAC */
881 #if defined(__arm__) && defined(IRQ_VSYNCPULSE)
882 cursor_blink_rate = ARM_CURSOR_BLINK_RATE;
883 irqres = request_irq(IRQ_VSYNCPULSE, fb_vbl_handler, SA_SHIRQ,
884 "framebuffer vbl", info);
886 /* Initialize the work queue. If the driver provides its
887 * own work queue this means it will use something besides
888 * default timer to flash the cursor. */
889 if (!info->queue.func) {
890 INIT_WORK(&info->queue, fb_flashcursor, info);
892 init_timer(&ops->cursor_timer);
893 ops->cursor_timer.function = cursor_timer_handler;
894 ops->cursor_timer.expires = jiffies + HZ / 5;
895 ops->cursor_timer.data = (unsigned long ) info;
896 add_timer(&ops->cursor_timer);
901 static void fbcon_init(struct vc_data *vc, int init)
903 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
904 struct fbcon_ops *ops;
905 struct vc_data **default_mode = vc->vc_display_fg;
906 struct vc_data *svc = *default_mode;
907 struct display *t, *p = &fb_display[vc->vc_num];
908 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
911 if (info_idx == -1 || info == NULL)
916 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
917 (info->fix.type == FB_TYPE_TEXT))
920 info->var.xoffset = info->var.yoffset = p->yscroll = 0; /* reset wrap/pan */
922 if (var_to_display(p, &info->var, info))
925 /* If we are not the first console on this
926 fb, copy the font from that console */
927 t = &fb_display[svc->vc_num];
928 if (!vc->vc_font.data) {
929 vc->vc_font.data = p->fontdata = t->fontdata;
930 vc->vc_font.width = (*default_mode)->vc_font.width;
931 vc->vc_font.height = (*default_mode)->vc_font.height;
932 p->userfont = t->userfont;
934 REFCOUNT(p->fontdata)++;
937 charcnt = FNTCHARCNT(p->fontdata);
938 vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1);
939 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
940 if (charcnt == 256) {
941 vc->vc_hi_font_mask = 0;
943 vc->vc_hi_font_mask = 0x100;
944 if (vc->vc_can_do_color)
945 vc->vc_complement_mask <<= 1;
948 if (!*svc->vc_uni_pagedir_loc)
949 con_set_default_unimap(svc);
950 if (!*vc->vc_uni_pagedir_loc)
951 con_copy_unimap(vc, svc);
955 new_cols = info->var.xres / vc->vc_font.width;
956 new_rows = info->var.yres / vc->vc_font.height;
957 vc_resize(vc, new_cols, new_rows);
959 ops = info->fbcon_par;
961 * We must always set the mode. The mode of the previous console
962 * driver could be in the same resolution but we are using different
963 * hardware so we have to initialize the hardware.
965 * We need to do it in fbcon_init() to prevent screen corruption.
967 if (CON_IS_VISIBLE(vc)) {
968 if (info->fbops->fb_set_par &&
969 !(ops->flags & FBCON_FLAGS_INIT))
970 info->fbops->fb_set_par(info);
971 ops->flags |= FBCON_FLAGS_INIT;
976 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
977 !(cap & FBINFO_HWACCEL_DISABLED))
978 p->scrollmode = SCROLL_MOVE;
979 else /* default to something safe */
980 p->scrollmode = SCROLL_REDRAW;
983 * ++guenther: console.c:vc_allocate() relies on initializing
984 * vc_{cols,rows}, but we must not set those if we are only
985 * resizing the console.
988 vc->vc_cols = new_cols;
989 vc->vc_rows = new_rows;
993 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
995 if (vc == svc && softback_buf) {
996 int l = fbcon_softback_size / vc->vc_size_row;
998 softback_end = softback_buf + l * vc->vc_size_row;
1000 /* Smaller scrollback makes no sense, and 0 would screw
1001 the operation totally */
1007 static void fbcon_deinit(struct vc_data *vc)
1009 struct display *p = &fb_display[vc->vc_num];
1016 /* ====================================================================== */
1018 /* fbcon_XXX routines - interface used by the world
1020 * This system is now divided into two levels because of complications
1021 * caused by hardware scrolling. Top level functions:
1023 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1025 * handles y values in range [0, scr_height-1] that correspond to real
1026 * screen positions. y_wrap shift means that first line of bitmap may be
1027 * anywhere on this display. These functions convert lineoffsets to
1028 * bitmap offsets and deal with the wrap-around case by splitting blits.
1030 * fbcon_bmove_physical_8() -- These functions fast implementations
1031 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1032 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1036 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1037 * Implies should only really hardware scroll in rows. Only reason for
1038 * restriction is simplicity & efficiency at the moment.
1041 static __inline__ int real_y(struct display *p, int ypos)
1043 int rows = p->vrows;
1046 return ypos < rows ? ypos : ypos - rows;
1050 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1053 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1054 struct fbcon_ops *ops = info->fbcon_par;
1056 struct display *p = &fb_display[vc->vc_num];
1059 if (fbcon_is_inactive(vc, info))
1062 if (!height || !width)
1065 /* Split blits that cross physical y_wrap boundary */
1067 y_break = p->vrows - p->yscroll;
1068 if (sy < y_break && sy + height - 1 >= y_break) {
1069 u_int b = y_break - sy;
1070 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1071 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1074 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1077 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1078 int count, int ypos, int xpos)
1080 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1081 struct display *p = &fb_display[vc->vc_num];
1082 struct fbcon_ops *ops = info->fbcon_par;
1084 if (!fbcon_is_inactive(vc, info))
1085 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1086 get_color(vc, info, scr_readw(s), 1),
1087 get_color(vc, info, scr_readw(s), 0));
1090 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1094 scr_writew(c, &chr);
1095 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1098 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1100 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1101 struct fbcon_ops *ops = info->fbcon_par;
1103 if (!fbcon_is_inactive(vc, info))
1104 ops->clear_margins(vc, info, bottom_only);
1107 static void fbcon_cursor(struct vc_data *vc, int mode)
1109 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1110 struct fbcon_ops *ops = info->fbcon_par;
1111 struct display *p = &fb_display[vc->vc_num];
1113 int c = scr_readw((u16 *) vc->vc_pos);
1115 if (fbcon_is_inactive(vc, info))
1118 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1119 if (mode & CM_SOFTBACK) {
1120 mode &= ~CM_SOFTBACK;
1124 fbcon_set_origin(vc);
1128 ops->cursor(vc, info, p, mode, y, get_color(vc, info, c, 1),
1129 get_color(vc, info, c, 0));
1130 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1133 static int scrollback_phys_max = 0;
1134 static int scrollback_max = 0;
1135 static int scrollback_current = 0;
1137 static int update_var(int con, struct fb_info *info)
1139 if (con == ((struct fbcon_ops *)info->fbcon_par)->currcon)
1140 return fb_pan_display(info, &info->var);
1145 * If no vc is existent yet, just set struct display
1147 static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1150 struct display *p = &fb_display[unit];
1151 struct display *t = &fb_display[fg_console];
1153 var->xoffset = var->yoffset = p->yscroll = 0;
1154 if (var_to_display(p, var, info))
1157 p->fontdata = t->fontdata;
1158 p->userfont = t->userfont;
1160 REFCOUNT(p->fontdata)++;
1163 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1166 struct display *p = &fb_display[vc->vc_num], *t;
1167 struct vc_data **default_mode = vc->vc_display_fg;
1168 struct vc_data *svc = *default_mode;
1169 int rows, cols, charcnt = 256;
1171 var->xoffset = var->yoffset = p->yscroll = 0;
1172 if (var_to_display(p, var, info))
1174 t = &fb_display[svc->vc_num];
1175 if (!vc->vc_font.data) {
1176 vc->vc_font.data = p->fontdata = t->fontdata;
1177 vc->vc_font.width = (*default_mode)->vc_font.width;
1178 vc->vc_font.height = (*default_mode)->vc_font.height;
1179 p->userfont = t->userfont;
1181 REFCOUNT(p->fontdata)++;
1184 charcnt = FNTCHARCNT(p->fontdata);
1186 vc->vc_can_do_color = (fb_get_color_depth(var) != 1);
1187 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1188 if (charcnt == 256) {
1189 vc->vc_hi_font_mask = 0;
1191 vc->vc_hi_font_mask = 0x100;
1192 if (vc->vc_can_do_color)
1193 vc->vc_complement_mask <<= 1;
1196 if (!*svc->vc_uni_pagedir_loc)
1197 con_set_default_unimap(svc);
1198 if (!*vc->vc_uni_pagedir_loc)
1199 con_copy_unimap(vc, svc);
1201 cols = var->xres / vc->vc_font.width;
1202 rows = var->yres / vc->vc_font.height;
1203 vc_resize(vc, cols, rows);
1204 if (CON_IS_VISIBLE(vc)) {
1207 int l = fbcon_softback_size / vc->vc_size_row;
1210 softback_end = softback_buf + l *
1213 /* Smaller scrollback makes no sense, and 0
1214 would screw the operation totally */
1221 static __inline__ void ywrap_up(struct vc_data *vc, int count)
1223 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1224 struct display *p = &fb_display[vc->vc_num];
1226 p->yscroll += count;
1227 if (p->yscroll >= p->vrows) /* Deal with wrap */
1228 p->yscroll -= p->vrows;
1229 info->var.xoffset = 0;
1230 info->var.yoffset = p->yscroll * vc->vc_font.height;
1231 info->var.vmode |= FB_VMODE_YWRAP;
1232 update_var(vc->vc_num, info);
1233 scrollback_max += count;
1234 if (scrollback_max > scrollback_phys_max)
1235 scrollback_max = scrollback_phys_max;
1236 scrollback_current = 0;
1239 static __inline__ void ywrap_down(struct vc_data *vc, int count)
1241 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1242 struct display *p = &fb_display[vc->vc_num];
1244 p->yscroll -= count;
1245 if (p->yscroll < 0) /* Deal with wrap */
1246 p->yscroll += p->vrows;
1247 info->var.xoffset = 0;
1248 info->var.yoffset = p->yscroll * vc->vc_font.height;
1249 info->var.vmode |= FB_VMODE_YWRAP;
1250 update_var(vc->vc_num, info);
1251 scrollback_max -= count;
1252 if (scrollback_max < 0)
1254 scrollback_current = 0;
1257 static __inline__ void ypan_up(struct vc_data *vc, int count)
1259 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1260 struct display *p = &fb_display[vc->vc_num];
1261 struct fbcon_ops *ops = info->fbcon_par;
1263 p->yscroll += count;
1264 if (p->yscroll > p->vrows - vc->vc_rows) {
1265 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1266 0, 0, 0, vc->vc_rows, vc->vc_cols);
1267 p->yscroll -= p->vrows - vc->vc_rows;
1269 info->var.xoffset = 0;
1270 info->var.yoffset = p->yscroll * vc->vc_font.height;
1271 info->var.vmode &= ~FB_VMODE_YWRAP;
1272 update_var(vc->vc_num, info);
1273 fbcon_clear_margins(vc, 1);
1274 scrollback_max += count;
1275 if (scrollback_max > scrollback_phys_max)
1276 scrollback_max = scrollback_phys_max;
1277 scrollback_current = 0;
1280 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1282 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1283 struct display *p = &fb_display[vc->vc_num];
1286 p->yscroll += count;
1287 if (p->yscroll > p->vrows - vc->vc_rows) {
1288 p->yscroll -= p->vrows - vc->vc_rows;
1292 info->var.xoffset = 0;
1293 info->var.yoffset = p->yscroll * vc->vc_font.height;
1294 info->var.vmode &= ~FB_VMODE_YWRAP;
1296 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1297 update_var(vc->vc_num, info);
1298 fbcon_clear_margins(vc, 1);
1299 scrollback_max += count;
1300 if (scrollback_max > scrollback_phys_max)
1301 scrollback_max = scrollback_phys_max;
1302 scrollback_current = 0;
1305 static __inline__ void ypan_down(struct vc_data *vc, int count)
1307 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1308 struct display *p = &fb_display[vc->vc_num];
1309 struct fbcon_ops *ops = info->fbcon_par;
1311 p->yscroll -= count;
1312 if (p->yscroll < 0) {
1313 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1314 0, vc->vc_rows, vc->vc_cols);
1315 p->yscroll += p->vrows - vc->vc_rows;
1317 info->var.xoffset = 0;
1318 info->var.yoffset = p->yscroll * vc->vc_font.height;
1319 info->var.vmode &= ~FB_VMODE_YWRAP;
1320 update_var(vc->vc_num, info);
1321 fbcon_clear_margins(vc, 1);
1322 scrollback_max -= count;
1323 if (scrollback_max < 0)
1325 scrollback_current = 0;
1328 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1330 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1331 struct display *p = &fb_display[vc->vc_num];
1334 p->yscroll -= count;
1335 if (p->yscroll < 0) {
1336 p->yscroll += p->vrows - vc->vc_rows;
1339 info->var.xoffset = 0;
1340 info->var.yoffset = p->yscroll * vc->vc_font.height;
1341 info->var.vmode &= ~FB_VMODE_YWRAP;
1343 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1344 update_var(vc->vc_num, info);
1345 fbcon_clear_margins(vc, 1);
1346 scrollback_max -= count;
1347 if (scrollback_max < 0)
1349 scrollback_current = 0;
1352 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1355 int count = vc->vc_rows;
1356 unsigned short *d, *s;
1360 d = (u16 *) softback_curr;
1361 if (d == (u16 *) softback_in)
1362 d = (u16 *) vc->vc_origin;
1363 n = softback_curr + delta * vc->vc_size_row;
1364 softback_lines -= delta;
1366 if (softback_curr < softback_top && n < softback_buf) {
1367 n += softback_end - softback_buf;
1368 if (n < softback_top) {
1370 (softback_top - n) / vc->vc_size_row;
1373 } else if (softback_curr >= softback_top
1374 && n < softback_top) {
1376 (softback_top - n) / vc->vc_size_row;
1380 if (softback_curr > softback_in && n >= softback_end) {
1381 n += softback_buf - softback_end;
1382 if (n > softback_in) {
1386 } else if (softback_curr <= softback_in && n > softback_in) {
1391 if (n == softback_curr)
1394 s = (u16 *) softback_curr;
1395 if (s == (u16 *) softback_in)
1396 s = (u16 *) vc->vc_origin;
1398 unsigned short *start;
1402 unsigned short attr = 1;
1405 le = advance_row(s, 1);
1408 if (attr != (c & 0xff00)) {
1411 fbcon_putcs(vc, start, s - start,
1417 if (c == scr_readw(d)) {
1419 fbcon_putcs(vc, start, s - start,
1432 fbcon_putcs(vc, start, s - start, line, x);
1434 if (d == (u16 *) softback_end)
1435 d = (u16 *) softback_buf;
1436 if (d == (u16 *) softback_in)
1437 d = (u16 *) vc->vc_origin;
1438 if (s == (u16 *) softback_end)
1439 s = (u16 *) softback_buf;
1440 if (s == (u16 *) softback_in)
1441 s = (u16 *) vc->vc_origin;
1445 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1446 int line, int count, int dy)
1448 unsigned short *s = (unsigned short *)
1449 (vc->vc_origin + vc->vc_size_row * line);
1452 unsigned short *start = s;
1453 unsigned short *le = advance_row(s, 1);
1456 unsigned short attr = 1;
1460 if (attr != (c & 0xff00)) {
1463 fbcon_putcs(vc, start, s - start,
1469 console_conditional_schedule();
1473 fbcon_putcs(vc, start, s - start, dy, x);
1474 console_conditional_schedule();
1479 static void fbcon_redraw(struct vc_data *vc, struct display *p,
1480 int line, int count, int offset)
1482 unsigned short *d = (unsigned short *)
1483 (vc->vc_origin + vc->vc_size_row * line);
1484 unsigned short *s = d + offset;
1487 unsigned short *start = s;
1488 unsigned short *le = advance_row(s, 1);
1491 unsigned short attr = 1;
1495 if (attr != (c & 0xff00)) {
1498 fbcon_putcs(vc, start, s - start,
1504 if (c == scr_readw(d)) {
1506 fbcon_putcs(vc, start, s - start,
1516 console_conditional_schedule();
1521 fbcon_putcs(vc, start, s - start, line, x);
1522 console_conditional_schedule();
1527 /* NOTE: We subtract two lines from these pointers */
1528 s -= vc->vc_size_row;
1529 d -= vc->vc_size_row;
1534 static inline void fbcon_softback_note(struct vc_data *vc, int t,
1539 if (vc->vc_num != fg_console)
1541 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1544 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1546 p = advance_row(p, 1);
1547 softback_in += vc->vc_size_row;
1548 if (softback_in == softback_end)
1549 softback_in = softback_buf;
1550 if (softback_in == softback_top) {
1551 softback_top += vc->vc_size_row;
1552 if (softback_top == softback_end)
1553 softback_top = softback_buf;
1556 softback_curr = softback_in;
1559 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1562 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1563 struct display *p = &fb_display[vc->vc_num];
1564 struct fbcon_ops *ops = info->fbcon_par;
1565 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1567 if (fbcon_is_inactive(vc, info))
1570 fbcon_cursor(vc, CM_ERASE);
1573 * ++Geert: Only use ywrap/ypan if the console is in text mode
1574 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1575 * whole screen (prevents flicker).
1580 if (count > vc->vc_rows) /* Maximum realistic size */
1581 count = vc->vc_rows;
1583 fbcon_softback_note(vc, t, count);
1584 if (logo_shown >= 0)
1586 switch (p->scrollmode) {
1588 ops->bmove(vc, info, t + count, 0, t, 0,
1589 b - t - count, vc->vc_cols);
1590 ops->clear(vc, info, b - count, 0, count,
1594 case SCROLL_WRAP_MOVE:
1595 if (b - t - count > 3 * vc->vc_rows >> 2) {
1597 fbcon_bmove(vc, 0, 0, count, 0, t,
1599 ywrap_up(vc, count);
1600 if (vc->vc_rows - b > 0)
1601 fbcon_bmove(vc, b - count, 0, b, 0,
1604 } else if (info->flags & FBINFO_READS_FAST)
1605 fbcon_bmove(vc, t + count, 0, t, 0,
1606 b - t - count, vc->vc_cols);
1609 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1612 case SCROLL_PAN_REDRAW:
1613 if ((p->yscroll + count <=
1614 2 * (p->vrows - vc->vc_rows))
1615 && ((!scroll_partial && (b - t == vc->vc_rows))
1618 3 * vc->vc_rows >> 2)))) {
1620 fbcon_redraw_move(vc, p, 0, t, count);
1621 ypan_up_redraw(vc, t, count);
1622 if (vc->vc_rows - b > 0)
1623 fbcon_redraw_move(vc, p, b - count,
1624 vc->vc_rows - b, b);
1626 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1627 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1630 case SCROLL_PAN_MOVE:
1631 if ((p->yscroll + count <=
1632 2 * (p->vrows - vc->vc_rows))
1633 && ((!scroll_partial && (b - t == vc->vc_rows))
1636 3 * vc->vc_rows >> 2)))) {
1638 fbcon_bmove(vc, 0, 0, count, 0, t,
1641 if (vc->vc_rows - b > 0)
1642 fbcon_bmove(vc, b - count, 0, b, 0,
1645 } else if (info->flags & FBINFO_READS_FAST)
1646 fbcon_bmove(vc, t + count, 0, t, 0,
1647 b - t - count, vc->vc_cols);
1650 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1655 fbcon_redraw(vc, p, t, b - t - count,
1656 count * vc->vc_cols);
1657 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1658 scr_memsetw((unsigned short *) (vc->vc_origin +
1661 vc->vc_video_erase_char,
1662 vc->vc_size_row * count);
1668 if (count > vc->vc_rows) /* Maximum realistic size */
1669 count = vc->vc_rows;
1670 switch (p->scrollmode) {
1672 ops->bmove(vc, info, t, 0, t + count, 0,
1673 b - t - count, vc->vc_cols);
1674 ops->clear(vc, info, t, 0, count, vc->vc_cols);
1677 case SCROLL_WRAP_MOVE:
1678 if (b - t - count > 3 * vc->vc_rows >> 2) {
1679 if (vc->vc_rows - b > 0)
1680 fbcon_bmove(vc, b, 0, b - count, 0,
1683 ywrap_down(vc, count);
1685 fbcon_bmove(vc, count, 0, 0, 0, t,
1687 } else if (info->flags & FBINFO_READS_FAST)
1688 fbcon_bmove(vc, t, 0, t + count, 0,
1689 b - t - count, vc->vc_cols);
1692 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1695 case SCROLL_PAN_MOVE:
1696 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1697 && ((!scroll_partial && (b - t == vc->vc_rows))
1700 3 * vc->vc_rows >> 2)))) {
1701 if (vc->vc_rows - b > 0)
1702 fbcon_bmove(vc, b, 0, b - count, 0,
1705 ypan_down(vc, count);
1707 fbcon_bmove(vc, count, 0, 0, 0, t,
1709 } else if (info->flags & FBINFO_READS_FAST)
1710 fbcon_bmove(vc, t, 0, t + count, 0,
1711 b - t - count, vc->vc_cols);
1714 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1717 case SCROLL_PAN_REDRAW:
1718 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1719 && ((!scroll_partial && (b - t == vc->vc_rows))
1722 3 * vc->vc_rows >> 2)))) {
1723 if (vc->vc_rows - b > 0)
1724 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1726 ypan_down_redraw(vc, t, count);
1728 fbcon_redraw_move(vc, p, count, t, 0);
1730 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1731 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1736 fbcon_redraw(vc, p, b - 1, b - t - count,
1737 -count * vc->vc_cols);
1738 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1739 scr_memsetw((unsigned short *) (vc->vc_origin +
1742 vc->vc_video_erase_char,
1743 vc->vc_size_row * count);
1751 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
1752 int height, int width)
1754 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1755 struct display *p = &fb_display[vc->vc_num];
1757 if (fbcon_is_inactive(vc, info))
1760 if (!width || !height)
1763 /* Split blits that cross physical y_wrap case.
1764 * Pathological case involves 4 blits, better to use recursive
1765 * code rather than unrolled case
1767 * Recursive invocations don't need to erase the cursor over and
1768 * over again, so we use fbcon_bmove_rec()
1770 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
1771 p->vrows - p->yscroll);
1774 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
1775 int dy, int dx, int height, int width, u_int y_break)
1777 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1778 struct fbcon_ops *ops = info->fbcon_par;
1781 if (sy < y_break && sy + height > y_break) {
1783 if (dy < sy) { /* Avoid trashing self */
1784 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1786 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1787 height - b, width, y_break);
1789 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1790 height - b, width, y_break);
1791 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1797 if (dy < y_break && dy + 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,
1812 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
1816 static __inline__ void updatescrollmode(struct display *p, struct fb_info *info,
1819 int fh = vc->vc_font.height;
1820 int cap = info->flags;
1821 int good_pan = (cap & FBINFO_HWACCEL_YPAN)
1822 && divides(info->fix.ypanstep, vc->vc_font.height)
1823 && info->var.yres_virtual > info->var.yres;
1824 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP)
1825 && divides(info->fix.ywrapstep, vc->vc_font.height)
1826 && divides(vc->vc_font.height, info->var.yres_virtual);
1827 int reading_fast = cap & FBINFO_READS_FAST;
1828 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && !(cap & FBINFO_HWACCEL_DISABLED);
1829 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && !(cap & FBINFO_HWACCEL_DISABLED);
1831 p->vrows = info->var.yres_virtual/fh;
1832 if (info->var.yres > (fh * (vc->vc_rows + 1)))
1833 p->vrows -= (info->var.yres - (fh * vc->vc_rows)) / fh;
1834 if ((info->var.yres % fh) && (info->var.yres_virtual % fh <
1835 info->var.yres % fh))
1838 if (good_wrap || good_pan) {
1839 if (reading_fast || fast_copyarea)
1840 p->scrollmode = good_wrap ? SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1842 p->scrollmode = good_wrap ? SCROLL_REDRAW :
1845 if (reading_fast || (fast_copyarea && !fast_imageblit))
1846 p->scrollmode = SCROLL_MOVE;
1848 p->scrollmode = SCROLL_REDRAW;
1852 static int fbcon_resize(struct vc_data *vc, unsigned int width,
1853 unsigned int height)
1855 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1856 struct display *p = &fb_display[vc->vc_num];
1857 struct fb_var_screeninfo var = info->var;
1859 int fw = vc->vc_font.width;
1860 int fh = vc->vc_font.height;
1862 var.xres = width * fw;
1863 var.yres = height * fh;
1864 x_diff = info->var.xres - var.xres;
1865 y_diff = info->var.yres - var.yres;
1866 if (x_diff < 0 || x_diff > fw || (y_diff < 0 || y_diff > fh)) {
1867 struct fb_videomode *mode;
1869 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
1870 mode = fb_find_best_mode(&var, &info->modelist);
1873 fb_videomode_to_var(&var, mode);
1874 if (width > var.xres/fw || height > var.yres/fh)
1877 * The following can probably have any value... Do we need to
1880 var.bits_per_pixel = p->bits_per_pixel;
1881 var.xres_virtual = p->xres_virtual;
1882 var.yres_virtual = p->yres_virtual;
1883 var.accel_flags = p->accel_flags;
1884 var.width = p->width;
1885 var.height = p->height;
1887 var.green = p->green;
1889 var.transp = p->transp;
1890 var.nonstd = p->nonstd;
1892 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
1893 if (CON_IS_VISIBLE(vc)) {
1894 var.activate = FB_ACTIVATE_NOW |
1896 fb_set_var(info, &var);
1898 var_to_display(p, &info->var, info);
1900 updatescrollmode(p, info, vc);
1904 static int fbcon_switch(struct vc_data *vc)
1906 struct fb_info *info;
1907 struct display *p = &fb_display[vc->vc_num];
1908 struct fb_var_screeninfo var;
1909 int i, prev_console;
1911 info = registered_fb[con2fb_map[vc->vc_num]];
1914 int l = fbcon_softback_size / vc->vc_size_row;
1916 fbcon_set_origin(vc);
1917 softback_top = softback_curr = softback_in = softback_buf;
1921 softback_end = softback_buf + l * vc->vc_size_row;
1923 /* Smaller scrollback makes no sense, and 0 would screw
1924 the operation totally */
1929 if (logo_shown >= 0) {
1930 struct vc_data *conp2 = vc_cons[logo_shown].d;
1932 if (conp2->vc_top == logo_lines
1933 && conp2->vc_bottom == conp2->vc_rows)
1935 logo_shown = FBCON_LOGO_CANSHOW;
1938 prev_console = ((struct fbcon_ops *)info->fbcon_par)->currcon;
1941 * FIXME: If we have multiple fbdev's loaded, we need to
1942 * update all info->currcon. Perhaps, we can place this
1943 * in a centralized structure, but this might break some
1946 * info->currcon = vc->vc_num;
1948 for (i = 0; i < FB_MAX; i++) {
1949 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
1950 struct fbcon_ops *ops = registered_fb[i]->fbcon_par;
1952 ops->currcon = vc->vc_num;
1955 memset(&var, 0, sizeof(struct fb_var_screeninfo));
1956 display_to_var(&var, p);
1957 var.activate = FB_ACTIVATE_NOW;
1960 * make sure we don't unnecessarily trip the memcmp()
1963 info->var.activate = var.activate;
1964 info->var.yoffset = info->var.xoffset = p->yscroll = 0;
1965 fb_set_var(info, &var);
1967 if (prev_console != -1 &&
1968 registered_fb[con2fb_map[prev_console]] != info &&
1969 info->fbops->fb_set_par)
1970 info->fbops->fb_set_par(info);
1972 set_blitting_type(vc, info, p);
1973 ((struct fbcon_ops *)info->fbcon_par)->cursor_reset = 1;
1975 vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1);
1976 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1977 updatescrollmode(p, info, vc);
1979 switch (p->scrollmode) {
1980 case SCROLL_WRAP_MOVE:
1981 scrollback_phys_max = p->vrows - vc->vc_rows;
1983 case SCROLL_PAN_MOVE:
1984 case SCROLL_PAN_REDRAW:
1985 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
1986 if (scrollback_phys_max < 0)
1987 scrollback_phys_max = 0;
1990 scrollback_phys_max = 0;
1994 scrollback_current = 0;
1996 update_var(vc->vc_num, info);
1997 fbcon_set_palette(vc, color_table);
1998 fbcon_clear_margins(vc, 0);
2000 if (logo_shown == FBCON_LOGO_DRAW) {
2002 logo_shown = fg_console;
2003 /* This is protected above by initmem_freed */
2006 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2007 vc->vc_size_row * (vc->vc_bottom -
2014 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2018 unsigned short charmask = vc->vc_hi_font_mask ?
2020 unsigned short oldc;
2022 oldc = vc->vc_video_erase_char;
2023 vc->vc_video_erase_char &= charmask;
2024 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2025 vc->vc_video_erase_char = oldc;
2029 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2031 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2032 struct fbcon_ops *ops = info->fbcon_par;
2035 struct fb_var_screeninfo var = info->var;
2040 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2041 fb_set_var(info, &var);
2046 if (!fbcon_is_inactive(vc, info)) {
2047 if (ops->blank_state != blank) {
2048 ops->blank_state = blank;
2049 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2050 ops->cursor_flash = (!blank);
2052 if (fb_blank(info, blank))
2053 fbcon_generic_blank(vc, info, blank);
2063 static void fbcon_free_font(struct display *p)
2065 if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
2066 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
2071 static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2073 u8 *fontdata = vc->vc_font.data;
2074 u8 *data = font->data;
2077 font->width = vc->vc_font.width;
2078 font->height = vc->vc_font.height;
2079 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2083 if (font->width <= 8) {
2084 j = vc->vc_font.height;
2085 for (i = 0; i < font->charcount; i++) {
2086 memcpy(data, fontdata, j);
2087 memset(data + j, 0, 32 - j);
2091 } else if (font->width <= 16) {
2092 j = vc->vc_font.height * 2;
2093 for (i = 0; i < font->charcount; i++) {
2094 memcpy(data, fontdata, j);
2095 memset(data + j, 0, 64 - j);
2099 } else if (font->width <= 24) {
2100 for (i = 0; i < font->charcount; i++) {
2101 for (j = 0; j < vc->vc_font.height; j++) {
2102 *data++ = fontdata[0];
2103 *data++ = fontdata[1];
2104 *data++ = fontdata[2];
2105 fontdata += sizeof(u32);
2107 memset(data, 0, 3 * (32 - j));
2108 data += 3 * (32 - j);
2111 j = vc->vc_font.height * 4;
2112 for (i = 0; i < font->charcount; i++) {
2113 memcpy(data, fontdata, j);
2114 memset(data + j, 0, 128 - j);
2122 static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2123 u8 * data, int userfont)
2125 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2126 struct display *p = &fb_display[vc->vc_num];
2129 char *old_data = NULL;
2131 if (CON_IS_VISIBLE(vc) && softback_lines)
2132 fbcon_set_origin(vc);
2134 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2136 old_data = vc->vc_font.data;
2138 cnt = FNTCHARCNT(data);
2141 vc->vc_font.data = p->fontdata = data;
2142 if ((p->userfont = userfont))
2144 vc->vc_font.width = w;
2145 vc->vc_font.height = h;
2146 if (vc->vc_hi_font_mask && cnt == 256) {
2147 vc->vc_hi_font_mask = 0;
2148 if (vc->vc_can_do_color) {
2149 vc->vc_complement_mask >>= 1;
2150 vc->vc_s_complement_mask >>= 1;
2153 /* ++Edmund: reorder the attribute bits */
2154 if (vc->vc_can_do_color) {
2155 unsigned short *cp =
2156 (unsigned short *) vc->vc_origin;
2157 int count = vc->vc_screenbuf_size / 2;
2159 for (; count > 0; count--, cp++) {
2161 scr_writew(((c & 0xfe00) >> 1) |
2164 c = vc->vc_video_erase_char;
2165 vc->vc_video_erase_char =
2166 ((c & 0xfe00) >> 1) | (c & 0xff);
2169 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2170 vc->vc_hi_font_mask = 0x100;
2171 if (vc->vc_can_do_color) {
2172 vc->vc_complement_mask <<= 1;
2173 vc->vc_s_complement_mask <<= 1;
2176 /* ++Edmund: reorder the attribute bits */
2178 unsigned short *cp =
2179 (unsigned short *) vc->vc_origin;
2180 int count = vc->vc_screenbuf_size / 2;
2182 for (; count > 0; count--, cp++) {
2183 unsigned short newc;
2185 if (vc->vc_can_do_color)
2187 ((c & 0xff00) << 1) | (c &
2191 scr_writew(newc, cp);
2193 c = vc->vc_video_erase_char;
2194 if (vc->vc_can_do_color) {
2195 vc->vc_video_erase_char =
2196 ((c & 0xff00) << 1) | (c & 0xff);
2199 vc->vc_video_erase_char = c & ~0x100;
2205 /* reset wrap/pan */
2206 info->var.xoffset = info->var.yoffset = p->yscroll = 0;
2207 vc_resize(vc, info->var.xres / w, info->var.yres / h);
2208 if (CON_IS_VISIBLE(vc) && softback_buf) {
2209 int l = fbcon_softback_size / vc->vc_size_row;
2212 softback_buf + l * vc->vc_size_row;
2214 /* Smaller scrollback makes no sense, and 0 would screw
2215 the operation totally */
2219 } else if (CON_IS_VISIBLE(vc)
2220 && vc->vc_mode == KD_TEXT) {
2221 fbcon_clear_margins(vc, 0);
2225 if (old_data && (--REFCOUNT(old_data) == 0))
2226 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2230 static int fbcon_copy_font(struct vc_data *vc, int con)
2232 struct display *od = &fb_display[con];
2233 struct console_font *f = &vc->vc_font;
2235 if (od->fontdata == f->data)
2236 return 0; /* already the same font... */
2237 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2241 * User asked to set font; we are guaranteed that
2242 * a) width and height are in range 1..32
2243 * b) charcount does not exceed 512
2244 * but lets not assume that, since someone might someday want to use larger
2245 * fonts. And charcount of 512 is small for unicode support.
2247 * However, user space gives the font in 32 rows , regardless of
2248 * actual font height. So a new API is needed if support for larger fonts
2249 * is ever implemented.
2252 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2254 unsigned charcount = font->charcount;
2255 int w = font->width;
2256 int h = font->height;
2259 u8 *new_data, *data = font->data;
2260 int pitch = (font->width+7) >> 3;
2262 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2263 * If not this check should be changed to charcount < 256 */
2264 if (charcount != 256 && charcount != 512)
2267 size = h * pitch * charcount;
2269 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2274 new_data += FONT_EXTRA_WORDS * sizeof(int);
2275 FNTSIZE(new_data) = size;
2276 FNTCHARCNT(new_data) = charcount;
2277 REFCOUNT(new_data) = 0; /* usage counter */
2278 for (i=0; i< charcount; i++) {
2279 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2282 /* Since linux has a nice crc32 function use it for counting font
2284 csum = crc32(0, new_data, size);
2286 FNTSUM(new_data) = csum;
2287 /* Check if the same font is on some other console already */
2288 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2289 struct vc_data *tmp = vc_cons[i].d;
2291 if (fb_display[i].userfont &&
2292 fb_display[i].fontdata &&
2293 FNTSUM(fb_display[i].fontdata) == csum &&
2294 FNTSIZE(fb_display[i].fontdata) == size &&
2295 tmp->vc_font.width == w &&
2296 !memcmp(fb_display[i].fontdata, new_data, size)) {
2297 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2298 new_data = fb_display[i].fontdata;
2302 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2305 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2307 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2308 struct font_desc *f;
2311 f = get_default_font(info->var.xres, info->var.yres);
2312 else if (!(f = find_font(name)))
2315 font->width = f->width;
2316 font->height = f->height;
2317 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2320 static u16 palette_red[16];
2321 static u16 palette_green[16];
2322 static u16 palette_blue[16];
2324 static struct fb_cmap palette_cmap = {
2325 0, 16, palette_red, palette_green, palette_blue, NULL
2328 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2330 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2334 if (fbcon_is_inactive(vc, info))
2337 if (!CON_IS_VISIBLE(vc))
2340 depth = fb_get_color_depth(&info->var);
2342 for (i = j = 0; i < 16; i++) {
2344 val = vc->vc_palette[j++];
2345 palette_red[k] = (val << 8) | val;
2346 val = vc->vc_palette[j++];
2347 palette_green[k] = (val << 8) | val;
2348 val = vc->vc_palette[j++];
2349 palette_blue[k] = (val << 8) | val;
2351 palette_cmap.len = 16;
2352 palette_cmap.start = 0;
2354 * If framebuffer is capable of less than 16 colors,
2355 * use default palette of fbcon.
2358 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2360 return fb_set_cmap(&palette_cmap, info);
2363 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2368 if (vc->vc_num != fg_console || !softback_lines)
2369 return (u16 *) (vc->vc_origin + offset);
2370 line = offset / vc->vc_size_row;
2371 if (line >= softback_lines)
2372 return (u16 *) (vc->vc_origin + offset -
2373 softback_lines * vc->vc_size_row);
2374 p = softback_curr + offset;
2375 if (p >= softback_end)
2376 p += softback_buf - softback_end;
2380 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2386 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2387 unsigned long offset = (pos - vc->vc_origin) / 2;
2389 x = offset % vc->vc_cols;
2390 y = offset / vc->vc_cols;
2391 if (vc->vc_num == fg_console)
2392 y += softback_lines;
2393 ret = pos + (vc->vc_cols - x) * 2;
2394 } else if (vc->vc_num == fg_console && softback_lines) {
2395 unsigned long offset = pos - softback_curr;
2397 if (pos < softback_curr)
2398 offset += softback_end - softback_buf;
2400 x = offset % vc->vc_cols;
2401 y = offset / vc->vc_cols;
2402 ret = pos + (vc->vc_cols - x) * 2;
2403 if (ret == softback_end)
2405 if (ret == softback_in)
2406 ret = vc->vc_origin;
2408 /* Should not happen */
2410 ret = vc->vc_origin;
2419 /* As we might be inside of softback, we may work with non-contiguous buffer,
2420 that's why we have to use a separate routine. */
2421 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2424 u16 a = scr_readw(p);
2425 if (!vc->vc_can_do_color)
2427 else if (vc->vc_hi_font_mask == 0x100)
2428 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2429 (((a) & 0x0e00) << 4);
2431 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2432 (((a) & 0x0700) << 4);
2434 if (p == (u16 *) softback_end)
2435 p = (u16 *) softback_buf;
2436 if (p == (u16 *) softback_in)
2437 p = (u16 *) vc->vc_origin;
2441 static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2443 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2444 struct display *p = &fb_display[fg_console];
2445 int offset, limit, scrollback_old;
2448 if (vc->vc_num != fg_console)
2450 if (vc->vc_mode != KD_TEXT || !lines)
2452 if (logo_shown >= 0) {
2453 struct vc_data *conp2 = vc_cons[logo_shown].d;
2455 if (conp2->vc_top == logo_lines
2456 && conp2->vc_bottom == conp2->vc_rows)
2458 if (logo_shown == vc->vc_num) {
2464 logo_lines * vc->vc_size_row;
2465 for (i = 0; i < logo_lines; i++) {
2466 if (p == softback_top)
2468 if (p == softback_buf)
2470 p -= vc->vc_size_row;
2471 q -= vc->vc_size_row;
2472 scr_memcpyw((u16 *) q, (u16 *) p,
2476 update_region(vc, vc->vc_origin,
2477 logo_lines * vc->vc_cols);
2479 logo_shown = FBCON_LOGO_CANSHOW;
2481 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2482 fbcon_redraw_softback(vc, p, lines);
2483 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2487 if (!scrollback_phys_max)
2490 scrollback_old = scrollback_current;
2491 scrollback_current -= lines;
2492 if (scrollback_current < 0)
2493 scrollback_current = 0;
2494 else if (scrollback_current > scrollback_max)
2495 scrollback_current = scrollback_max;
2496 if (scrollback_current == scrollback_old)
2499 if (fbcon_is_inactive(vc, info))
2502 fbcon_cursor(vc, CM_ERASE);
2504 offset = p->yscroll - scrollback_current;
2506 switch (p->scrollmode) {
2507 case SCROLL_WRAP_MOVE:
2508 info->var.vmode |= FB_VMODE_YWRAP;
2510 case SCROLL_PAN_MOVE:
2511 case SCROLL_PAN_REDRAW:
2512 limit -= vc->vc_rows;
2513 info->var.vmode &= ~FB_VMODE_YWRAP;
2518 else if (offset >= limit)
2520 info->var.xoffset = 0;
2521 info->var.yoffset = offset * vc->vc_font.height;
2522 update_var(vc->vc_num, info);
2523 if (!scrollback_current)
2524 fbcon_cursor(vc, CM_DRAW);
2528 static int fbcon_set_origin(struct vc_data *vc)
2531 fbcon_scrolldelta(vc, softback_lines);
2535 static void fbcon_suspended(struct fb_info *info)
2537 struct vc_data *vc = NULL;
2538 struct fbcon_ops *ops = info->fbcon_par;
2540 if (!ops || ops->currcon < 0)
2542 vc = vc_cons[ops->currcon].d;
2544 /* Clear cursor, restore saved data */
2545 fbcon_cursor(vc, CM_ERASE);
2548 static void fbcon_resumed(struct fb_info *info)
2551 struct fbcon_ops *ops = info->fbcon_par;
2553 if (!ops || ops->currcon < 0)
2555 vc = vc_cons[ops->currcon].d;
2560 static void fbcon_modechanged(struct fb_info *info)
2562 struct fbcon_ops *ops = info->fbcon_par;
2567 if (!ops || ops->currcon < 0)
2569 vc = vc_cons[ops->currcon].d;
2570 if (vc->vc_mode != KD_TEXT || registered_fb[con2fb_map[ops->currcon]] != info)
2573 p = &fb_display[vc->vc_num];
2575 info->var.xoffset = info->var.yoffset = p->yscroll = 0;
2577 if (CON_IS_VISIBLE(vc)) {
2578 var_to_display(p, &info->var, info);
2579 cols = info->var.xres / vc->vc_font.width;
2580 rows = info->var.yres / vc->vc_font.height;
2581 vc_resize(vc, cols, rows);
2582 updatescrollmode(p, info, vc);
2584 scrollback_current = 0;
2585 update_var(vc->vc_num, info);
2586 fbcon_set_palette(vc, color_table);
2589 int l = fbcon_softback_size / vc->vc_size_row;
2591 softback_end = softback_buf + l * vc->vc_size_row;
2593 /* Smaller scrollback makes no sense, and 0
2594 would screw the operation totally */
2601 static int fbcon_mode_deleted(struct fb_info *info,
2602 struct fb_videomode *mode)
2604 struct fb_info *fb_info;
2606 int i, j, found = 0;
2608 /* before deletion, ensure that mode is not in use */
2609 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2613 fb_info = registered_fb[j];
2614 if (fb_info != info)
2619 if (fb_mode_is_equal(p->mode, mode)) {
2627 static int fbcon_fb_registered(int idx)
2631 if (info_idx == -1) {
2632 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2633 if (con2fb_map_boot[i] == idx) {
2639 ret = fbcon_takeover(1);
2641 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2642 if (con2fb_map_boot[i] == idx)
2643 set_con2fb_map(i, idx, 0);
2650 static void fbcon_fb_blanked(struct fb_info *info, int blank)
2652 struct fbcon_ops *ops = info->fbcon_par;
2655 if (!ops || ops->currcon < 0)
2658 vc = vc_cons[ops->currcon].d;
2659 if (vc->vc_mode != KD_TEXT ||
2660 registered_fb[con2fb_map[ops->currcon]] != info)
2663 if (CON_IS_VISIBLE(vc)) {
2667 do_unblank_screen(0);
2669 ops->blank_state = blank;
2672 static void fbcon_new_modelist(struct fb_info *info)
2676 struct fb_var_screeninfo var;
2677 struct fb_videomode *mode;
2679 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2680 if (registered_fb[con2fb_map[i]] != info)
2682 if (!fb_display[i].mode)
2685 display_to_var(&var, &fb_display[i]);
2686 mode = fb_find_nearest_mode(&var, &info->modelist);
2687 fb_videomode_to_var(&var, mode);
2690 fbcon_set_disp(info, &var, vc);
2692 fbcon_preset_disp(info, &var, i);
2697 static int fbcon_event_notify(struct notifier_block *self,
2698 unsigned long action, void *data)
2700 struct fb_event *event = data;
2701 struct fb_info *info = event->info;
2702 struct fb_videomode *mode;
2703 struct fb_con2fbmap *con2fb;
2707 case FB_EVENT_SUSPEND:
2708 fbcon_suspended(info);
2710 case FB_EVENT_RESUME:
2711 fbcon_resumed(info);
2713 case FB_EVENT_MODE_CHANGE:
2714 fbcon_modechanged(info);
2716 case FB_EVENT_MODE_DELETE:
2718 ret = fbcon_mode_deleted(info, mode);
2720 case FB_EVENT_FB_REGISTERED:
2721 ret = fbcon_fb_registered(info->node);
2723 case FB_EVENT_SET_CONSOLE_MAP:
2724 con2fb = event->data;
2725 ret = set_con2fb_map(con2fb->console - 1,
2726 con2fb->framebuffer, 1);
2728 case FB_EVENT_GET_CONSOLE_MAP:
2729 con2fb = event->data;
2730 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
2732 case FB_EVENT_BLANK:
2733 fbcon_fb_blanked(info, *(int *)event->data);
2735 case FB_EVENT_NEW_MODELIST:
2736 fbcon_new_modelist(info);
2744 * The console `switch' structure for the frame buffer based console
2747 static const struct consw fb_con = {
2748 .owner = THIS_MODULE,
2749 .con_startup = fbcon_startup,
2750 .con_init = fbcon_init,
2751 .con_deinit = fbcon_deinit,
2752 .con_clear = fbcon_clear,
2753 .con_putc = fbcon_putc,
2754 .con_putcs = fbcon_putcs,
2755 .con_cursor = fbcon_cursor,
2756 .con_scroll = fbcon_scroll,
2757 .con_bmove = fbcon_bmove,
2758 .con_switch = fbcon_switch,
2759 .con_blank = fbcon_blank,
2760 .con_font_set = fbcon_set_font,
2761 .con_font_get = fbcon_get_font,
2762 .con_font_default = fbcon_set_def_font,
2763 .con_font_copy = fbcon_copy_font,
2764 .con_set_palette = fbcon_set_palette,
2765 .con_scrolldelta = fbcon_scrolldelta,
2766 .con_set_origin = fbcon_set_origin,
2767 .con_invert_region = fbcon_invert_region,
2768 .con_screen_pos = fbcon_screen_pos,
2769 .con_getxy = fbcon_getxy,
2770 .con_resize = fbcon_resize,
2773 static struct notifier_block fbcon_event_notifier = {
2774 .notifier_call = fbcon_event_notify,
2777 static int __init fb_console_init(void)
2781 acquire_console_sem();
2782 fb_register_client(&fbcon_event_notifier);
2783 release_console_sem();
2785 for (i = 0; i < MAX_NR_CONSOLES; i++)
2788 if (num_registered_fb) {
2789 for (i = 0; i < FB_MAX; i++) {
2790 if (registered_fb[i] != NULL) {
2801 module_init(fb_console_init);
2805 static void __exit fb_console_exit(void)
2807 acquire_console_sem();
2808 fb_unregister_client(&fbcon_event_notifier);
2809 release_console_sem();
2810 give_up_console(&fb_con);
2813 module_exit(fb_console_exit);
2817 MODULE_LICENSE("GPL");