2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver
4 * Copyright (C) 1995 Geert Uytterhoeven
7 * This file is based on the original Amiga console driver (amicon.c):
9 * Copyright (C) 1993 Hamish Macdonald
11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
13 * with work by William Rucklidge (wjr@cs.cornell.edu)
15 * Jes Sorensen (jds@kom.auc.dk)
18 * and on the original Atari console driver (atacon.c):
20 * Copyright (C) 1993 Bjoern Brauel
23 * with work by Guenther Kelleter
27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org)
28 * Smart redraw scrolling, arbitrary font width support, 512char font support
29 * and software scrollback added by
30 * Jakub Jelinek (jj@ultra.linux.cz)
32 * Random hacking by Martin Mares <mj@ucw.cz>
34 * 2001 - Documented with DocBook
35 * - Brad Douglas <brad@neruo.com>
37 * The low level operations for the various display memory organizations are
38 * now in separate source files.
40 * Currently the following organizations are supported:
42 * o afb Amiga bitplanes
43 * o cfb{2,4,8,16,24,32} Packed pixels
44 * o ilbm Amiga interleaved bitplanes
45 * o iplan2p[248] Atari interleaved bitplanes
47 * o vga VGA characters/attributes
51 * - Implement 16 plane mode (iplan2p16)
54 * This file is subject to the terms and conditions of the GNU General Public
55 * License. See the file COPYING in the main directory of this archive for
61 #include <linux/config.h>
62 #include <linux/module.h>
63 #include <linux/types.h>
64 #include <linux/sched.h>
66 #include <linux/kernel.h>
67 #include <linux/delay.h> /* MSch: for IRQ probe */
68 #include <linux/tty.h>
69 #include <linux/console.h>
70 #include <linux/string.h>
72 #include <linux/slab.h>
74 #include <linux/vt_kern.h>
75 #include <linux/selection.h>
76 #include <linux/font.h>
77 #include <linux/smp.h>
78 #include <linux/init.h>
79 #include <linux/interrupt.h>
80 #include <linux/crc32.h> /* For counting font checksums */
82 #include <asm/system.h>
83 #include <asm/uaccess.h>
85 #include <asm/atariints.h>
88 #include <asm/macints.h>
90 #if defined(__mc68000__) || defined(CONFIG_APUS)
91 #include <asm/machdep.h>
92 #include <asm/setup.h>
98 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
100 # define DPRINTK(fmt, args...)
104 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
105 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
106 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */
109 struct display fb_display[MAX_NR_CONSOLES];
110 static signed char con2fb_map[MAX_NR_CONSOLES];
111 static signed char con2fb_map_boot[MAX_NR_CONSOLES];
112 static int logo_height;
113 static int logo_lines;
114 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
116 static int logo_shown = FBCON_LOGO_CANSHOW;
117 /* Software scrollback */
118 static int fbcon_softback_size = 32768;
119 static unsigned long softback_buf, softback_curr;
120 static unsigned long softback_in;
121 static unsigned long softback_top, softback_end;
122 static int softback_lines;
123 /* console mappings */
124 static int first_fb_vc;
125 static int last_fb_vc = MAX_NR_CONSOLES - 1;
126 static int fbcon_is_default = 1;
128 static char fontname[40];
130 /* current fb_info */
131 static int info_idx = -1;
133 static const struct consw fb_con;
135 #define CM_SOFTBACK (8)
137 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
139 static void fbcon_free_font(struct display *);
140 static int fbcon_set_origin(struct vc_data *);
142 #define CURSOR_DRAW_DELAY (1)
144 /* # VBL ints between cursor state changes */
145 #define ATARI_CURSOR_BLINK_RATE (42)
146 #define MAC_CURSOR_BLINK_RATE (32)
147 #define DEFAULT_CURSOR_BLINK_RATE (20)
149 static int vbl_cursor_cnt;
151 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
154 * Interface used by the world
157 static const char *fbcon_startup(void);
158 static void fbcon_init(struct vc_data *vc, int init);
159 static void fbcon_deinit(struct vc_data *vc);
160 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
162 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
163 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
164 int count, int ypos, int xpos);
165 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
166 static void fbcon_cursor(struct vc_data *vc, int mode);
167 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
169 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
170 int height, int width);
171 static int fbcon_switch(struct vc_data *vc);
172 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
173 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
174 static int fbcon_scrolldelta(struct vc_data *vc, int lines);
179 static __inline__ int real_y(struct display *p, int ypos);
180 static __inline__ void ywrap_up(struct vc_data *vc, int count);
181 static __inline__ void ywrap_down(struct vc_data *vc, int count);
182 static __inline__ void ypan_up(struct vc_data *vc, int count);
183 static __inline__ void ypan_down(struct vc_data *vc, int count);
184 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
185 int dy, int dx, int height, int width, u_int y_break);
186 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
188 static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
190 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
191 int line, int count, int dy);
195 * On the Macintoy, there may or may not be a working VBL int. We need to probe
197 static int vbl_detected;
199 static irqreturn_t fb_vbl_detect(int irq, void *dummy, struct pt_regs *fp)
206 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
208 struct fbcon_ops *ops = info->fbcon_par;
210 return (info->state != FBINFO_STATE_RUNNING ||
211 vc->vc_mode != KD_TEXT || ops->graphics);
214 static inline int get_color(struct vc_data *vc, struct fb_info *info,
217 int depth = fb_get_color_depth(&info->var);
220 if (console_blanked) {
221 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
223 c = vc->vc_video_erase_char & charmask;
227 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
228 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
234 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? 1 : 0;
235 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : 1;
240 color = (is_fg) ? fg : bg;
245 * Scale down 16-colors to 4 colors. Default 4-color palette
252 * Last 8 entries of default 16-color palette is a more intense
253 * version of the first 8 (i.e., same chrominance, different
264 static void fb_flashcursor(void *private)
266 struct fb_info *info = private;
267 struct fbcon_ops *ops = info->fbcon_par;
269 struct vc_data *vc = NULL;
273 if (ops->currcon != -1)
274 vc = vc_cons[ops->currcon].d;
276 if (!vc || !CON_IS_VISIBLE(vc) ||
277 fbcon_is_inactive(vc, info) ||
278 registered_fb[con2fb_map[vc->vc_num]] != info)
280 acquire_console_sem();
281 p = &fb_display[vc->vc_num];
282 c = scr_readw((u16 *) vc->vc_pos);
283 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
285 ops->cursor(vc, info, p, mode, softback_lines, get_color(vc, info, c, 1),
286 get_color(vc, info, c, 0));
287 release_console_sem();
290 #if defined(CONFIG_ATARI) || defined(CONFIG_MAC)
291 static int cursor_blink_rate;
292 static irqreturn_t fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp)
294 struct fb_info *info = dev_id;
296 if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) {
297 schedule_work(&info->queue);
298 vbl_cursor_cnt = cursor_blink_rate;
304 static void cursor_timer_handler(unsigned long dev_addr)
306 struct fb_info *info = (struct fb_info *) dev_addr;
307 struct fbcon_ops *ops = info->fbcon_par;
309 schedule_work(&info->queue);
310 mod_timer(&ops->cursor_timer, jiffies + HZ/5);
314 static int __init fb_console_setup(char *this_opt)
319 if (!this_opt || !*this_opt)
322 while ((options = strsep(&this_opt, ",")) != NULL) {
323 if (!strncmp(options, "font:", 5))
324 strcpy(fontname, options + 5);
326 if (!strncmp(options, "scrollback:", 11)) {
329 fbcon_softback_size = simple_strtoul(options, &options, 0);
330 if (*options == 'k' || *options == 'K') {
331 fbcon_softback_size *= 1024;
341 if (!strncmp(options, "map:", 4)) {
344 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
348 (options[j++]-'0') % FB_MAX;
353 if (!strncmp(options, "vc:", 3)) {
356 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
359 if (*options++ == '-')
360 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
361 fbcon_is_default = 0;
367 __setup("fbcon=", fb_console_setup);
370 static int search_fb_in_map(int idx)
374 for (i = 0; i < MAX_NR_CONSOLES; i++) {
375 if (con2fb_map[i] == idx)
381 static int search_for_mapped_con(void)
385 for (i = 0; i < MAX_NR_CONSOLES; i++) {
386 if (con2fb_map[i] != -1)
392 static int fbcon_takeover(int show_logo)
396 if (!num_registered_fb)
400 logo_shown = FBCON_LOGO_DONTSHOW;
402 for (i = first_fb_vc; i <= last_fb_vc; i++)
403 con2fb_map[i] = info_idx;
405 err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
408 for (i = first_fb_vc; i <= last_fb_vc; i++) {
417 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
418 int cols, int rows, int new_cols, int new_rows)
420 /* Need to make room for the logo */
421 int cnt, erase = vc->vc_video_erase_char, step;
422 unsigned short *save = NULL, *r, *q;
425 * remove underline attribute from erase character
426 * if black and white framebuffer.
428 if (fb_get_color_depth(&info->var) == 1)
430 logo_height = fb_prepare_logo(info);
431 logo_lines = (logo_height + vc->vc_font.height - 1) /
433 q = (unsigned short *) (vc->vc_origin +
434 vc->vc_size_row * rows);
435 step = logo_lines * cols;
436 for (r = q - logo_lines * cols; r < q; r++)
437 if (scr_readw(r) != vc->vc_video_erase_char)
439 if (r != q && new_rows >= rows + logo_lines) {
440 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
442 int i = cols < new_cols ? cols : new_cols;
443 scr_memsetw(save, erase, logo_lines * new_cols * 2);
445 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
446 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
451 /* We can scroll screen down */
453 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
454 scr_memcpyw(r + step, r, vc->vc_size_row);
458 vc->vc_y += logo_lines;
459 vc->vc_pos += logo_lines * vc->vc_size_row;
462 scr_memsetw((unsigned short *) vc->vc_origin,
464 vc->vc_size_row * logo_lines);
466 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
467 fbcon_clear_margins(vc, 0);
472 q = (unsigned short *) (vc->vc_origin +
475 scr_memcpyw(q, save, logo_lines * new_cols * 2);
476 vc->vc_y += logo_lines;
477 vc->vc_pos += logo_lines * vc->vc_size_row;
481 if (logo_lines > vc->vc_bottom) {
482 logo_shown = FBCON_LOGO_CANSHOW;
484 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
485 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
486 logo_shown = FBCON_LOGO_DRAW;
487 vc->vc_top = logo_lines;
491 #ifdef CONFIG_FB_TILEBLITTING
492 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
495 struct fbcon_ops *ops = info->fbcon_par;
497 if ((info->flags & FBINFO_MISC_TILEBLITTING))
498 fbcon_set_tileops(vc, info, p, ops);
500 fbcon_set_bitops(ops);
503 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
506 struct fbcon_ops *ops = info->fbcon_par;
508 info->flags &= ~FBINFO_MISC_TILEBLITTING;
509 fbcon_set_bitops(ops);
511 #endif /* CONFIG_MISC_TILEBLITTING */
514 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
515 int unit, int oldidx)
517 struct fbcon_ops *ops = NULL;
520 if (!try_module_get(info->fbops->owner))
523 if (!err && info->fbops->fb_open &&
524 info->fbops->fb_open(info, 0))
528 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
534 memset(ops, 0, sizeof(struct fbcon_ops));
535 info->fbcon_par = ops;
536 set_blitting_type(vc, info, NULL);
540 con2fb_map[unit] = oldidx;
541 module_put(info->fbops->owner);
547 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
548 struct fb_info *newinfo, int unit,
549 int oldidx, int found)
551 struct fbcon_ops *ops = oldinfo->fbcon_par;
554 if (oldinfo->fbops->fb_release &&
555 oldinfo->fbops->fb_release(oldinfo, 0)) {
556 con2fb_map[unit] = oldidx;
557 if (!found && newinfo->fbops->fb_release)
558 newinfo->fbops->fb_release(newinfo, 0);
560 module_put(newinfo->fbops->owner);
565 if (oldinfo->queue.func == fb_flashcursor)
566 del_timer_sync(&ops->cursor_timer);
568 kfree(ops->cursor_state.mask);
569 kfree(ops->cursor_data);
570 kfree(oldinfo->fbcon_par);
571 oldinfo->fbcon_par = NULL;
572 module_put(oldinfo->fbops->owner);
578 static void con2fb_init_newinfo(struct fb_info *info)
580 if (!info->queue.func || info->queue.func == fb_flashcursor) {
581 struct fbcon_ops *ops = info->fbcon_par;
583 if (!info->queue.func)
584 INIT_WORK(&info->queue, fb_flashcursor, info);
586 init_timer(&ops->cursor_timer);
587 ops->cursor_timer.function = cursor_timer_handler;
588 ops->cursor_timer.expires = jiffies + HZ / 5;
589 ops->cursor_timer.data = (unsigned long ) info;
590 add_timer(&ops->cursor_timer);
594 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
595 int unit, int show_logo)
597 struct fbcon_ops *ops = info->fbcon_par;
599 ops->currcon = fg_console;
601 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT))
602 info->fbops->fb_set_par(info);
604 ops->flags |= FBCON_FLAGS_INIT;
608 fbcon_set_disp(info, &info->var, vc);
610 fbcon_preset_disp(info, &info->var, unit);
613 struct vc_data *fg_vc = vc_cons[fg_console].d;
614 struct fb_info *fg_info =
615 registered_fb[con2fb_map[fg_console]];
617 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
618 fg_vc->vc_rows, fg_vc->vc_cols,
622 update_screen(vc_cons[fg_console].d);
626 * set_con2fb_map - map console to frame buffer device
627 * @unit: virtual console number to map
628 * @newidx: frame buffer index to map virtual console to
629 * @user: user request
631 * Maps a virtual console @unit to a frame buffer device
634 static int set_con2fb_map(int unit, int newidx, int user)
636 struct vc_data *vc = vc_cons[unit].d;
637 int oldidx = con2fb_map[unit];
638 struct fb_info *info = registered_fb[newidx];
639 struct fb_info *oldinfo = NULL;
642 if (oldidx == newidx)
648 if (!err && !search_for_mapped_con()) {
650 return fbcon_takeover(0);
654 oldinfo = registered_fb[oldidx];
656 found = search_fb_in_map(newidx);
658 acquire_console_sem();
659 con2fb_map[unit] = newidx;
661 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
665 * If old fb is not mapped to any of the consoles,
666 * fbcon should release it.
668 if (!err && oldinfo && !search_fb_in_map(oldidx))
669 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
673 int show_logo = (fg_console == 0 && !user &&
674 logo_shown != FBCON_LOGO_DONTSHOW);
677 con2fb_init_newinfo(info);
678 con2fb_map_boot[unit] = newidx;
679 con2fb_init_display(vc, info, unit, show_logo);
682 release_console_sem();
687 * Low Level Operations
689 /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
690 static int var_to_display(struct display *disp,
691 struct fb_var_screeninfo *var,
692 struct fb_info *info)
694 disp->xres_virtual = var->xres_virtual;
695 disp->yres_virtual = var->yres_virtual;
696 disp->bits_per_pixel = var->bits_per_pixel;
697 disp->grayscale = var->grayscale;
698 disp->nonstd = var->nonstd;
699 disp->accel_flags = var->accel_flags;
700 disp->height = var->height;
701 disp->width = var->width;
702 disp->red = var->red;
703 disp->green = var->green;
704 disp->blue = var->blue;
705 disp->transp = var->transp;
706 disp->rotate = var->rotate;
707 disp->mode = fb_match_mode(var, &info->modelist);
708 if (disp->mode == NULL)
709 /* This should not happen */
714 static void display_to_var(struct fb_var_screeninfo *var,
715 struct display *disp)
717 fb_videomode_to_var(var, disp->mode);
718 var->xres_virtual = disp->xres_virtual;
719 var->yres_virtual = disp->yres_virtual;
720 var->bits_per_pixel = disp->bits_per_pixel;
721 var->grayscale = disp->grayscale;
722 var->nonstd = disp->nonstd;
723 var->accel_flags = disp->accel_flags;
724 var->height = disp->height;
725 var->width = disp->width;
726 var->red = disp->red;
727 var->green = disp->green;
728 var->blue = disp->blue;
729 var->transp = disp->transp;
730 var->rotate = disp->rotate;
733 static const char *fbcon_startup(void)
735 const char *display_desc = "frame buffer device";
736 struct display *p = &fb_display[fg_console];
737 struct vc_data *vc = vc_cons[fg_console].d;
738 struct font_desc *font = NULL;
739 struct module *owner;
740 struct fb_info *info = NULL;
741 struct fbcon_ops *ops;
747 * If num_registered_fb is zero, this is a call for the dummy part.
748 * The frame buffer devices weren't initialized yet.
750 if (!num_registered_fb || info_idx == -1)
753 * Instead of blindly using registered_fb[0], we use info_idx, set by
756 info = registered_fb[info_idx];
760 owner = info->fbops->owner;
761 if (!try_module_get(owner))
763 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
768 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
774 memset(ops, 0, sizeof(struct fbcon_ops));
777 info->fbcon_par = ops;
778 set_blitting_type(vc, info, NULL);
780 if (info->fix.type != FB_TYPE_TEXT) {
781 if (fbcon_softback_size) {
785 kmalloc(fbcon_softback_size,
788 fbcon_softback_size = 0;
794 kfree((void *) softback_buf);
800 softback_in = softback_top = softback_curr =
805 /* Setup default font */
807 if (!fontname[0] || !(font = find_font(fontname)))
808 font = get_default_font(info->var.xres,
810 vc->vc_font.width = font->width;
811 vc->vc_font.height = font->height;
812 vc->vc_font.data = p->fontdata = font->data;
813 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
816 cols = info->var.xres / vc->vc_font.width;
817 rows = info->var.yres / vc->vc_font.height;
818 vc_resize(vc, cols, rows);
820 DPRINTK("mode: %s\n", info->fix.id);
821 DPRINTK("visual: %d\n", info->fix.visual);
822 DPRINTK("res: %dx%d-%d\n", info->var.xres,
824 info->var.bits_per_pixel);
828 cursor_blink_rate = ATARI_CURSOR_BLINK_RATE;
830 request_irq(IRQ_AUTO_4, fb_vbl_handler,
831 IRQ_TYPE_PRIO, "framebuffer vbl",
834 #endif /* CONFIG_ATARI */
838 * On a Macintoy, the VBL interrupt may or may not be active.
839 * As interrupt based cursor is more reliable and race free, we
840 * probe for VBL interrupts.
845 * Probe for VBL: set temp. handler ...
847 irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0,
848 "framebuffer vbl", info);
852 * ... and spin for 20 ms ...
854 while (!vbl_detected && ++ct < 1000)
859 ("fbcon_startup: No VBL detected, using timer based cursor.\n");
861 free_irq(IRQ_MAC_VBL, fb_vbl_detect);
865 * interrupt based cursor ok
867 cursor_blink_rate = MAC_CURSOR_BLINK_RATE;
869 request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0,
870 "framebuffer vbl", info);
873 * VBL not detected: fall through, use timer based cursor
878 #endif /* CONFIG_MAC */
880 /* Initialize the work queue. If the driver provides its
881 * own work queue this means it will use something besides
882 * default timer to flash the cursor. */
883 if (!info->queue.func) {
884 INIT_WORK(&info->queue, fb_flashcursor, info);
886 init_timer(&ops->cursor_timer);
887 ops->cursor_timer.function = cursor_timer_handler;
888 ops->cursor_timer.expires = jiffies + HZ / 5;
889 ops->cursor_timer.data = (unsigned long ) info;
890 add_timer(&ops->cursor_timer);
895 static void fbcon_init(struct vc_data *vc, int init)
897 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
898 struct fbcon_ops *ops;
899 struct vc_data **default_mode = vc->vc_display_fg;
900 struct vc_data *svc = *default_mode;
901 struct display *t, *p = &fb_display[vc->vc_num];
902 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
905 if (info_idx == -1 || info == NULL)
910 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
911 (info->fix.type == FB_TYPE_TEXT))
914 info->var.xoffset = info->var.yoffset = p->yscroll = 0; /* reset wrap/pan */
916 if (var_to_display(p, &info->var, info))
919 /* If we are not the first console on this
920 fb, copy the font from that console */
921 t = &fb_display[svc->vc_num];
922 if (!vc->vc_font.data) {
923 vc->vc_font.data = p->fontdata = t->fontdata;
924 vc->vc_font.width = (*default_mode)->vc_font.width;
925 vc->vc_font.height = (*default_mode)->vc_font.height;
926 p->userfont = t->userfont;
928 REFCOUNT(p->fontdata)++;
931 charcnt = FNTCHARCNT(p->fontdata);
932 vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1);
933 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
934 if (charcnt == 256) {
935 vc->vc_hi_font_mask = 0;
937 vc->vc_hi_font_mask = 0x100;
938 if (vc->vc_can_do_color)
939 vc->vc_complement_mask <<= 1;
942 if (!*svc->vc_uni_pagedir_loc)
943 con_set_default_unimap(svc);
944 if (!*vc->vc_uni_pagedir_loc)
945 con_copy_unimap(vc, svc);
949 new_cols = info->var.xres / vc->vc_font.width;
950 new_rows = info->var.yres / vc->vc_font.height;
951 vc_resize(vc, new_cols, new_rows);
953 ops = info->fbcon_par;
955 * We must always set the mode. The mode of the previous console
956 * driver could be in the same resolution but we are using different
957 * hardware so we have to initialize the hardware.
959 * We need to do it in fbcon_init() to prevent screen corruption.
961 if (CON_IS_VISIBLE(vc)) {
962 if (info->fbops->fb_set_par &&
963 !(ops->flags & FBCON_FLAGS_INIT))
964 info->fbops->fb_set_par(info);
965 ops->flags |= FBCON_FLAGS_INIT;
970 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
971 !(cap & FBINFO_HWACCEL_DISABLED))
972 p->scrollmode = SCROLL_MOVE;
973 else /* default to something safe */
974 p->scrollmode = SCROLL_REDRAW;
977 * ++guenther: console.c:vc_allocate() relies on initializing
978 * vc_{cols,rows}, but we must not set those if we are only
979 * resizing the console.
982 vc->vc_cols = new_cols;
983 vc->vc_rows = new_rows;
987 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
989 if (vc == svc && softback_buf) {
990 int l = fbcon_softback_size / vc->vc_size_row;
992 softback_end = softback_buf + l * vc->vc_size_row;
994 /* Smaller scrollback makes no sense, and 0 would screw
995 the operation totally */
1001 static void fbcon_deinit(struct vc_data *vc)
1003 struct display *p = &fb_display[vc->vc_num];
1010 /* ====================================================================== */
1012 /* fbcon_XXX routines - interface used by the world
1014 * This system is now divided into two levels because of complications
1015 * caused by hardware scrolling. Top level functions:
1017 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1019 * handles y values in range [0, scr_height-1] that correspond to real
1020 * screen positions. y_wrap shift means that first line of bitmap may be
1021 * anywhere on this display. These functions convert lineoffsets to
1022 * bitmap offsets and deal with the wrap-around case by splitting blits.
1024 * fbcon_bmove_physical_8() -- These functions fast implementations
1025 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1026 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1030 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1031 * Implies should only really hardware scroll in rows. Only reason for
1032 * restriction is simplicity & efficiency at the moment.
1035 static __inline__ int real_y(struct display *p, int ypos)
1037 int rows = p->vrows;
1040 return ypos < rows ? ypos : ypos - rows;
1044 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1047 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1048 struct fbcon_ops *ops = info->fbcon_par;
1050 struct display *p = &fb_display[vc->vc_num];
1053 if (fbcon_is_inactive(vc, info))
1056 if (!height || !width)
1059 /* Split blits that cross physical y_wrap boundary */
1061 y_break = p->vrows - p->yscroll;
1062 if (sy < y_break && sy + height - 1 >= y_break) {
1063 u_int b = y_break - sy;
1064 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1065 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1068 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1071 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1072 int count, int ypos, int xpos)
1074 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1075 struct display *p = &fb_display[vc->vc_num];
1076 struct fbcon_ops *ops = info->fbcon_par;
1078 if (!fbcon_is_inactive(vc, info))
1079 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1080 get_color(vc, info, scr_readw(s), 1),
1081 get_color(vc, info, scr_readw(s), 0));
1084 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1088 scr_writew(c, &chr);
1089 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1092 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1094 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1095 struct fbcon_ops *ops = info->fbcon_par;
1097 if (!fbcon_is_inactive(vc, info))
1098 ops->clear_margins(vc, info, bottom_only);
1101 static void fbcon_cursor(struct vc_data *vc, int mode)
1103 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1104 struct fbcon_ops *ops = info->fbcon_par;
1105 struct display *p = &fb_display[vc->vc_num];
1107 int c = scr_readw((u16 *) vc->vc_pos);
1109 if (fbcon_is_inactive(vc, info))
1112 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1113 if (mode & CM_SOFTBACK) {
1114 mode &= ~CM_SOFTBACK;
1118 fbcon_set_origin(vc);
1122 ops->cursor(vc, info, p, mode, y, get_color(vc, info, c, 1),
1123 get_color(vc, info, c, 0));
1124 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1127 static int scrollback_phys_max = 0;
1128 static int scrollback_max = 0;
1129 static int scrollback_current = 0;
1131 static int update_var(int con, struct fb_info *info)
1133 if (con == ((struct fbcon_ops *)info->fbcon_par)->currcon)
1134 return fb_pan_display(info, &info->var);
1139 * If no vc is existent yet, just set struct display
1141 static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1144 struct display *p = &fb_display[unit];
1145 struct display *t = &fb_display[fg_console];
1147 var->xoffset = var->yoffset = p->yscroll = 0;
1148 if (var_to_display(p, var, info))
1151 p->fontdata = t->fontdata;
1152 p->userfont = t->userfont;
1154 REFCOUNT(p->fontdata)++;
1157 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1160 struct display *p = &fb_display[vc->vc_num], *t;
1161 struct vc_data **default_mode = vc->vc_display_fg;
1162 struct vc_data *svc = *default_mode;
1163 int rows, cols, charcnt = 256;
1165 var->xoffset = var->yoffset = p->yscroll = 0;
1166 if (var_to_display(p, var, info))
1168 t = &fb_display[svc->vc_num];
1169 if (!vc->vc_font.data) {
1170 vc->vc_font.data = p->fontdata = t->fontdata;
1171 vc->vc_font.width = (*default_mode)->vc_font.width;
1172 vc->vc_font.height = (*default_mode)->vc_font.height;
1173 p->userfont = t->userfont;
1175 REFCOUNT(p->fontdata)++;
1178 charcnt = FNTCHARCNT(p->fontdata);
1180 vc->vc_can_do_color = (fb_get_color_depth(var) != 1);
1181 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1182 if (charcnt == 256) {
1183 vc->vc_hi_font_mask = 0;
1185 vc->vc_hi_font_mask = 0x100;
1186 if (vc->vc_can_do_color)
1187 vc->vc_complement_mask <<= 1;
1190 if (!*svc->vc_uni_pagedir_loc)
1191 con_set_default_unimap(svc);
1192 if (!*vc->vc_uni_pagedir_loc)
1193 con_copy_unimap(vc, svc);
1195 cols = var->xres / vc->vc_font.width;
1196 rows = var->yres / vc->vc_font.height;
1197 vc_resize(vc, cols, rows);
1198 if (CON_IS_VISIBLE(vc)) {
1201 int l = fbcon_softback_size / vc->vc_size_row;
1204 softback_end = softback_buf + l *
1207 /* Smaller scrollback makes no sense, and 0
1208 would screw the operation totally */
1215 static __inline__ void ywrap_up(struct vc_data *vc, int count)
1217 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1218 struct display *p = &fb_display[vc->vc_num];
1220 p->yscroll += count;
1221 if (p->yscroll >= p->vrows) /* Deal with wrap */
1222 p->yscroll -= p->vrows;
1223 info->var.xoffset = 0;
1224 info->var.yoffset = p->yscroll * vc->vc_font.height;
1225 info->var.vmode |= FB_VMODE_YWRAP;
1226 update_var(vc->vc_num, info);
1227 scrollback_max += count;
1228 if (scrollback_max > scrollback_phys_max)
1229 scrollback_max = scrollback_phys_max;
1230 scrollback_current = 0;
1233 static __inline__ void ywrap_down(struct vc_data *vc, int count)
1235 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1236 struct display *p = &fb_display[vc->vc_num];
1238 p->yscroll -= count;
1239 if (p->yscroll < 0) /* Deal with wrap */
1240 p->yscroll += p->vrows;
1241 info->var.xoffset = 0;
1242 info->var.yoffset = p->yscroll * vc->vc_font.height;
1243 info->var.vmode |= FB_VMODE_YWRAP;
1244 update_var(vc->vc_num, info);
1245 scrollback_max -= count;
1246 if (scrollback_max < 0)
1248 scrollback_current = 0;
1251 static __inline__ void ypan_up(struct vc_data *vc, int count)
1253 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1254 struct display *p = &fb_display[vc->vc_num];
1255 struct fbcon_ops *ops = info->fbcon_par;
1257 p->yscroll += count;
1258 if (p->yscroll > p->vrows - vc->vc_rows) {
1259 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1260 0, 0, 0, vc->vc_rows, vc->vc_cols);
1261 p->yscroll -= p->vrows - vc->vc_rows;
1263 info->var.xoffset = 0;
1264 info->var.yoffset = p->yscroll * vc->vc_font.height;
1265 info->var.vmode &= ~FB_VMODE_YWRAP;
1266 update_var(vc->vc_num, info);
1267 fbcon_clear_margins(vc, 1);
1268 scrollback_max += count;
1269 if (scrollback_max > scrollback_phys_max)
1270 scrollback_max = scrollback_phys_max;
1271 scrollback_current = 0;
1274 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1276 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1277 struct display *p = &fb_display[vc->vc_num];
1280 p->yscroll += count;
1281 if (p->yscroll > p->vrows - vc->vc_rows) {
1282 p->yscroll -= p->vrows - vc->vc_rows;
1286 info->var.xoffset = 0;
1287 info->var.yoffset = p->yscroll * vc->vc_font.height;
1288 info->var.vmode &= ~FB_VMODE_YWRAP;
1290 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1291 update_var(vc->vc_num, info);
1292 fbcon_clear_margins(vc, 1);
1293 scrollback_max += count;
1294 if (scrollback_max > scrollback_phys_max)
1295 scrollback_max = scrollback_phys_max;
1296 scrollback_current = 0;
1299 static __inline__ void ypan_down(struct vc_data *vc, int count)
1301 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1302 struct display *p = &fb_display[vc->vc_num];
1303 struct fbcon_ops *ops = info->fbcon_par;
1305 p->yscroll -= count;
1306 if (p->yscroll < 0) {
1307 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1308 0, vc->vc_rows, vc->vc_cols);
1309 p->yscroll += p->vrows - vc->vc_rows;
1311 info->var.xoffset = 0;
1312 info->var.yoffset = p->yscroll * vc->vc_font.height;
1313 info->var.vmode &= ~FB_VMODE_YWRAP;
1314 update_var(vc->vc_num, info);
1315 fbcon_clear_margins(vc, 1);
1316 scrollback_max -= count;
1317 if (scrollback_max < 0)
1319 scrollback_current = 0;
1322 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1324 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1325 struct display *p = &fb_display[vc->vc_num];
1328 p->yscroll -= count;
1329 if (p->yscroll < 0) {
1330 p->yscroll += p->vrows - vc->vc_rows;
1333 info->var.xoffset = 0;
1334 info->var.yoffset = p->yscroll * vc->vc_font.height;
1335 info->var.vmode &= ~FB_VMODE_YWRAP;
1337 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1338 update_var(vc->vc_num, info);
1339 fbcon_clear_margins(vc, 1);
1340 scrollback_max -= count;
1341 if (scrollback_max < 0)
1343 scrollback_current = 0;
1346 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1349 int count = vc->vc_rows;
1350 unsigned short *d, *s;
1354 d = (u16 *) softback_curr;
1355 if (d == (u16 *) softback_in)
1356 d = (u16 *) vc->vc_origin;
1357 n = softback_curr + delta * vc->vc_size_row;
1358 softback_lines -= delta;
1360 if (softback_curr < softback_top && n < softback_buf) {
1361 n += softback_end - softback_buf;
1362 if (n < softback_top) {
1364 (softback_top - n) / vc->vc_size_row;
1367 } else if (softback_curr >= softback_top
1368 && n < softback_top) {
1370 (softback_top - n) / vc->vc_size_row;
1374 if (softback_curr > softback_in && n >= softback_end) {
1375 n += softback_buf - softback_end;
1376 if (n > softback_in) {
1380 } else if (softback_curr <= softback_in && n > softback_in) {
1385 if (n == softback_curr)
1388 s = (u16 *) softback_curr;
1389 if (s == (u16 *) softback_in)
1390 s = (u16 *) vc->vc_origin;
1392 unsigned short *start;
1396 unsigned short attr = 1;
1399 le = advance_row(s, 1);
1402 if (attr != (c & 0xff00)) {
1405 fbcon_putcs(vc, start, s - start,
1411 if (c == scr_readw(d)) {
1413 fbcon_putcs(vc, start, s - start,
1426 fbcon_putcs(vc, start, s - start, line, x);
1428 if (d == (u16 *) softback_end)
1429 d = (u16 *) softback_buf;
1430 if (d == (u16 *) softback_in)
1431 d = (u16 *) vc->vc_origin;
1432 if (s == (u16 *) softback_end)
1433 s = (u16 *) softback_buf;
1434 if (s == (u16 *) softback_in)
1435 s = (u16 *) vc->vc_origin;
1439 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1440 int line, int count, int dy)
1442 unsigned short *s = (unsigned short *)
1443 (vc->vc_origin + vc->vc_size_row * line);
1446 unsigned short *start = s;
1447 unsigned short *le = advance_row(s, 1);
1450 unsigned short attr = 1;
1454 if (attr != (c & 0xff00)) {
1457 fbcon_putcs(vc, start, s - start,
1463 console_conditional_schedule();
1467 fbcon_putcs(vc, start, s - start, dy, x);
1468 console_conditional_schedule();
1473 static void fbcon_redraw(struct vc_data *vc, struct display *p,
1474 int line, int count, int offset)
1476 unsigned short *d = (unsigned short *)
1477 (vc->vc_origin + vc->vc_size_row * line);
1478 unsigned short *s = d + offset;
1481 unsigned short *start = s;
1482 unsigned short *le = advance_row(s, 1);
1485 unsigned short attr = 1;
1489 if (attr != (c & 0xff00)) {
1492 fbcon_putcs(vc, start, s - start,
1498 if (c == scr_readw(d)) {
1500 fbcon_putcs(vc, start, s - start,
1510 console_conditional_schedule();
1515 fbcon_putcs(vc, start, s - start, line, x);
1516 console_conditional_schedule();
1521 /* NOTE: We subtract two lines from these pointers */
1522 s -= vc->vc_size_row;
1523 d -= vc->vc_size_row;
1528 static inline void fbcon_softback_note(struct vc_data *vc, int t,
1533 if (vc->vc_num != fg_console)
1535 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1538 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1540 p = advance_row(p, 1);
1541 softback_in += vc->vc_size_row;
1542 if (softback_in == softback_end)
1543 softback_in = softback_buf;
1544 if (softback_in == softback_top) {
1545 softback_top += vc->vc_size_row;
1546 if (softback_top == softback_end)
1547 softback_top = softback_buf;
1550 softback_curr = softback_in;
1553 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1556 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1557 struct display *p = &fb_display[vc->vc_num];
1558 struct fbcon_ops *ops = info->fbcon_par;
1559 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1561 if (fbcon_is_inactive(vc, info))
1564 fbcon_cursor(vc, CM_ERASE);
1567 * ++Geert: Only use ywrap/ypan if the console is in text mode
1568 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1569 * whole screen (prevents flicker).
1574 if (count > vc->vc_rows) /* Maximum realistic size */
1575 count = vc->vc_rows;
1577 fbcon_softback_note(vc, t, count);
1578 if (logo_shown >= 0)
1580 switch (p->scrollmode) {
1582 ops->bmove(vc, info, t + count, 0, t, 0,
1583 b - t - count, vc->vc_cols);
1584 ops->clear(vc, info, b - count, 0, count,
1588 case SCROLL_WRAP_MOVE:
1589 if (b - t - count > 3 * vc->vc_rows >> 2) {
1591 fbcon_bmove(vc, 0, 0, count, 0, t,
1593 ywrap_up(vc, count);
1594 if (vc->vc_rows - b > 0)
1595 fbcon_bmove(vc, b - count, 0, b, 0,
1598 } else if (info->flags & FBINFO_READS_FAST)
1599 fbcon_bmove(vc, t + count, 0, t, 0,
1600 b - t - count, vc->vc_cols);
1603 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1606 case SCROLL_PAN_REDRAW:
1607 if ((p->yscroll + count <=
1608 2 * (p->vrows - vc->vc_rows))
1609 && ((!scroll_partial && (b - t == vc->vc_rows))
1612 3 * vc->vc_rows >> 2)))) {
1614 fbcon_redraw_move(vc, p, 0, t, count);
1615 ypan_up_redraw(vc, t, count);
1616 if (vc->vc_rows - b > 0)
1617 fbcon_redraw_move(vc, p, b - count,
1618 vc->vc_rows - b, b);
1620 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1621 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1624 case SCROLL_PAN_MOVE:
1625 if ((p->yscroll + count <=
1626 2 * (p->vrows - vc->vc_rows))
1627 && ((!scroll_partial && (b - t == vc->vc_rows))
1630 3 * vc->vc_rows >> 2)))) {
1632 fbcon_bmove(vc, 0, 0, count, 0, t,
1635 if (vc->vc_rows - b > 0)
1636 fbcon_bmove(vc, b - count, 0, b, 0,
1639 } else if (info->flags & FBINFO_READS_FAST)
1640 fbcon_bmove(vc, t + count, 0, t, 0,
1641 b - t - count, vc->vc_cols);
1644 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1649 fbcon_redraw(vc, p, t, b - t - count,
1650 count * vc->vc_cols);
1651 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1652 scr_memsetw((unsigned short *) (vc->vc_origin +
1655 vc->vc_video_erase_char,
1656 vc->vc_size_row * count);
1662 if (count > vc->vc_rows) /* Maximum realistic size */
1663 count = vc->vc_rows;
1664 switch (p->scrollmode) {
1666 ops->bmove(vc, info, t, 0, t + count, 0,
1667 b - t - count, vc->vc_cols);
1668 ops->clear(vc, info, t, 0, count, vc->vc_cols);
1671 case SCROLL_WRAP_MOVE:
1672 if (b - t - count > 3 * vc->vc_rows >> 2) {
1673 if (vc->vc_rows - b > 0)
1674 fbcon_bmove(vc, b, 0, b - count, 0,
1677 ywrap_down(vc, count);
1679 fbcon_bmove(vc, count, 0, 0, 0, t,
1681 } else if (info->flags & FBINFO_READS_FAST)
1682 fbcon_bmove(vc, t, 0, t + count, 0,
1683 b - t - count, vc->vc_cols);
1686 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1689 case SCROLL_PAN_MOVE:
1690 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1691 && ((!scroll_partial && (b - t == vc->vc_rows))
1694 3 * vc->vc_rows >> 2)))) {
1695 if (vc->vc_rows - b > 0)
1696 fbcon_bmove(vc, b, 0, b - count, 0,
1699 ypan_down(vc, count);
1701 fbcon_bmove(vc, count, 0, 0, 0, t,
1703 } else if (info->flags & FBINFO_READS_FAST)
1704 fbcon_bmove(vc, t, 0, t + count, 0,
1705 b - t - count, vc->vc_cols);
1708 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1711 case SCROLL_PAN_REDRAW:
1712 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1713 && ((!scroll_partial && (b - t == vc->vc_rows))
1716 3 * vc->vc_rows >> 2)))) {
1717 if (vc->vc_rows - b > 0)
1718 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1720 ypan_down_redraw(vc, t, count);
1722 fbcon_redraw_move(vc, p, count, t, 0);
1724 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1725 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1730 fbcon_redraw(vc, p, b - 1, b - t - count,
1731 -count * vc->vc_cols);
1732 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1733 scr_memsetw((unsigned short *) (vc->vc_origin +
1736 vc->vc_video_erase_char,
1737 vc->vc_size_row * count);
1745 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
1746 int height, int width)
1748 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1749 struct display *p = &fb_display[vc->vc_num];
1751 if (fbcon_is_inactive(vc, info))
1754 if (!width || !height)
1757 /* Split blits that cross physical y_wrap case.
1758 * Pathological case involves 4 blits, better to use recursive
1759 * code rather than unrolled case
1761 * Recursive invocations don't need to erase the cursor over and
1762 * over again, so we use fbcon_bmove_rec()
1764 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
1765 p->vrows - p->yscroll);
1768 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
1769 int dy, int dx, int height, int width, u_int y_break)
1771 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1772 struct fbcon_ops *ops = info->fbcon_par;
1775 if (sy < y_break && sy + height > y_break) {
1777 if (dy < sy) { /* Avoid trashing self */
1778 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1780 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1781 height - b, width, y_break);
1783 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1784 height - b, width, y_break);
1785 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1791 if (dy < y_break && dy + height > y_break) {
1793 if (dy < sy) { /* Avoid trashing self */
1794 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1796 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1797 height - b, width, y_break);
1799 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1800 height - b, width, y_break);
1801 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1806 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
1810 static __inline__ void updatescrollmode(struct display *p, struct fb_info *info,
1813 int fh = vc->vc_font.height;
1814 int cap = info->flags;
1815 int good_pan = (cap & FBINFO_HWACCEL_YPAN)
1816 && divides(info->fix.ypanstep, vc->vc_font.height)
1817 && info->var.yres_virtual > info->var.yres;
1818 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP)
1819 && divides(info->fix.ywrapstep, vc->vc_font.height)
1820 && divides(vc->vc_font.height, info->var.yres_virtual);
1821 int reading_fast = cap & FBINFO_READS_FAST;
1822 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && !(cap & FBINFO_HWACCEL_DISABLED);
1823 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && !(cap & FBINFO_HWACCEL_DISABLED);
1825 p->vrows = info->var.yres_virtual/fh;
1826 if (info->var.yres > (fh * (vc->vc_rows + 1)))
1827 p->vrows -= (info->var.yres - (fh * vc->vc_rows)) / fh;
1828 if ((info->var.yres % fh) && (info->var.yres_virtual % fh <
1829 info->var.yres % fh))
1832 if (good_wrap || good_pan) {
1833 if (reading_fast || fast_copyarea)
1834 p->scrollmode = good_wrap ? SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1836 p->scrollmode = good_wrap ? SCROLL_REDRAW :
1839 if (reading_fast || (fast_copyarea && !fast_imageblit))
1840 p->scrollmode = SCROLL_MOVE;
1842 p->scrollmode = SCROLL_REDRAW;
1846 static int fbcon_resize(struct vc_data *vc, unsigned int width,
1847 unsigned int height)
1849 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1850 struct display *p = &fb_display[vc->vc_num];
1851 struct fb_var_screeninfo var = info->var;
1853 int fw = vc->vc_font.width;
1854 int fh = vc->vc_font.height;
1856 var.xres = width * fw;
1857 var.yres = height * fh;
1858 x_diff = info->var.xres - var.xres;
1859 y_diff = info->var.yres - var.yres;
1860 if (x_diff < 0 || x_diff > fw || (y_diff < 0 || y_diff > fh)) {
1861 struct fb_videomode *mode;
1863 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
1864 mode = fb_find_best_mode(&var, &info->modelist);
1867 fb_videomode_to_var(&var, mode);
1868 if (width > var.xres/fw || height > var.yres/fh)
1871 * The following can probably have any value... Do we need to
1874 var.bits_per_pixel = p->bits_per_pixel;
1875 var.xres_virtual = p->xres_virtual;
1876 var.yres_virtual = p->yres_virtual;
1877 var.accel_flags = p->accel_flags;
1878 var.width = p->width;
1879 var.height = p->height;
1881 var.green = p->green;
1883 var.transp = p->transp;
1884 var.nonstd = p->nonstd;
1886 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
1887 if (CON_IS_VISIBLE(vc)) {
1888 var.activate = FB_ACTIVATE_NOW |
1890 fb_set_var(info, &var);
1892 var_to_display(p, &info->var, info);
1894 updatescrollmode(p, info, vc);
1898 static int fbcon_switch(struct vc_data *vc)
1900 struct fb_info *info;
1901 struct display *p = &fb_display[vc->vc_num];
1902 struct fb_var_screeninfo var;
1903 int i, prev_console;
1905 info = registered_fb[con2fb_map[vc->vc_num]];
1908 int l = fbcon_softback_size / vc->vc_size_row;
1910 fbcon_set_origin(vc);
1911 softback_top = softback_curr = softback_in = softback_buf;
1915 softback_end = softback_buf + l * vc->vc_size_row;
1917 /* Smaller scrollback makes no sense, and 0 would screw
1918 the operation totally */
1923 if (logo_shown >= 0) {
1924 struct vc_data *conp2 = vc_cons[logo_shown].d;
1926 if (conp2->vc_top == logo_lines
1927 && conp2->vc_bottom == conp2->vc_rows)
1929 logo_shown = FBCON_LOGO_CANSHOW;
1932 prev_console = ((struct fbcon_ops *)info->fbcon_par)->currcon;
1935 * FIXME: If we have multiple fbdev's loaded, we need to
1936 * update all info->currcon. Perhaps, we can place this
1937 * in a centralized structure, but this might break some
1940 * info->currcon = vc->vc_num;
1942 for (i = 0; i < FB_MAX; i++) {
1943 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
1944 struct fbcon_ops *ops = registered_fb[i]->fbcon_par;
1946 ops->currcon = vc->vc_num;
1949 memset(&var, 0, sizeof(struct fb_var_screeninfo));
1950 display_to_var(&var, p);
1951 var.activate = FB_ACTIVATE_NOW;
1954 * make sure we don't unnecessarily trip the memcmp()
1957 info->var.activate = var.activate;
1958 info->var.yoffset = info->var.xoffset = p->yscroll = 0;
1959 fb_set_var(info, &var);
1961 if (prev_console != -1 &&
1962 registered_fb[con2fb_map[prev_console]] != info &&
1963 info->fbops->fb_set_par)
1964 info->fbops->fb_set_par(info);
1966 set_blitting_type(vc, info, p);
1967 ((struct fbcon_ops *)info->fbcon_par)->cursor_reset = 1;
1969 vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1);
1970 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1971 updatescrollmode(p, info, vc);
1973 switch (p->scrollmode) {
1974 case SCROLL_WRAP_MOVE:
1975 scrollback_phys_max = p->vrows - vc->vc_rows;
1977 case SCROLL_PAN_MOVE:
1978 case SCROLL_PAN_REDRAW:
1979 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
1980 if (scrollback_phys_max < 0)
1981 scrollback_phys_max = 0;
1984 scrollback_phys_max = 0;
1988 scrollback_current = 0;
1990 update_var(vc->vc_num, info);
1991 fbcon_set_palette(vc, color_table);
1992 fbcon_clear_margins(vc, 0);
1994 if (logo_shown == FBCON_LOGO_DRAW) {
1996 logo_shown = fg_console;
1997 /* This is protected above by initmem_freed */
2000 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2001 vc->vc_size_row * (vc->vc_bottom -
2008 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2012 unsigned short charmask = vc->vc_hi_font_mask ?
2014 unsigned short oldc;
2016 oldc = vc->vc_video_erase_char;
2017 vc->vc_video_erase_char &= charmask;
2018 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2019 vc->vc_video_erase_char = oldc;
2023 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2025 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2026 struct fbcon_ops *ops = info->fbcon_par;
2029 struct fb_var_screeninfo var = info->var;
2034 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2035 fb_set_var(info, &var);
2040 if (!fbcon_is_inactive(vc, info)) {
2041 if (ops->blank_state != blank) {
2042 ops->blank_state = blank;
2043 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2044 ops->cursor_flash = (!blank);
2046 if (fb_blank(info, blank))
2047 fbcon_generic_blank(vc, info, blank);
2057 static void fbcon_free_font(struct display *p)
2059 if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
2060 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
2065 static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2067 u8 *fontdata = vc->vc_font.data;
2068 u8 *data = font->data;
2071 font->width = vc->vc_font.width;
2072 font->height = vc->vc_font.height;
2073 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2077 if (font->width <= 8) {
2078 j = vc->vc_font.height;
2079 for (i = 0; i < font->charcount; i++) {
2080 memcpy(data, fontdata, j);
2081 memset(data + j, 0, 32 - j);
2085 } else if (font->width <= 16) {
2086 j = vc->vc_font.height * 2;
2087 for (i = 0; i < font->charcount; i++) {
2088 memcpy(data, fontdata, j);
2089 memset(data + j, 0, 64 - j);
2093 } else if (font->width <= 24) {
2094 for (i = 0; i < font->charcount; i++) {
2095 for (j = 0; j < vc->vc_font.height; j++) {
2096 *data++ = fontdata[0];
2097 *data++ = fontdata[1];
2098 *data++ = fontdata[2];
2099 fontdata += sizeof(u32);
2101 memset(data, 0, 3 * (32 - j));
2102 data += 3 * (32 - j);
2105 j = vc->vc_font.height * 4;
2106 for (i = 0; i < font->charcount; i++) {
2107 memcpy(data, fontdata, j);
2108 memset(data + j, 0, 128 - j);
2116 static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2117 u8 * data, int userfont)
2119 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2120 struct display *p = &fb_display[vc->vc_num];
2123 char *old_data = NULL;
2125 if (CON_IS_VISIBLE(vc) && softback_lines)
2126 fbcon_set_origin(vc);
2128 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2130 old_data = vc->vc_font.data;
2132 cnt = FNTCHARCNT(data);
2135 vc->vc_font.data = p->fontdata = data;
2136 if ((p->userfont = userfont))
2138 vc->vc_font.width = w;
2139 vc->vc_font.height = h;
2140 if (vc->vc_hi_font_mask && cnt == 256) {
2141 vc->vc_hi_font_mask = 0;
2142 if (vc->vc_can_do_color) {
2143 vc->vc_complement_mask >>= 1;
2144 vc->vc_s_complement_mask >>= 1;
2147 /* ++Edmund: reorder the attribute bits */
2148 if (vc->vc_can_do_color) {
2149 unsigned short *cp =
2150 (unsigned short *) vc->vc_origin;
2151 int count = vc->vc_screenbuf_size / 2;
2153 for (; count > 0; count--, cp++) {
2155 scr_writew(((c & 0xfe00) >> 1) |
2158 c = vc->vc_video_erase_char;
2159 vc->vc_video_erase_char =
2160 ((c & 0xfe00) >> 1) | (c & 0xff);
2163 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2164 vc->vc_hi_font_mask = 0x100;
2165 if (vc->vc_can_do_color) {
2166 vc->vc_complement_mask <<= 1;
2167 vc->vc_s_complement_mask <<= 1;
2170 /* ++Edmund: reorder the attribute bits */
2172 unsigned short *cp =
2173 (unsigned short *) vc->vc_origin;
2174 int count = vc->vc_screenbuf_size / 2;
2176 for (; count > 0; count--, cp++) {
2177 unsigned short newc;
2179 if (vc->vc_can_do_color)
2181 ((c & 0xff00) << 1) | (c &
2185 scr_writew(newc, cp);
2187 c = vc->vc_video_erase_char;
2188 if (vc->vc_can_do_color) {
2189 vc->vc_video_erase_char =
2190 ((c & 0xff00) << 1) | (c & 0xff);
2193 vc->vc_video_erase_char = c & ~0x100;
2199 /* reset wrap/pan */
2200 info->var.xoffset = info->var.yoffset = p->yscroll = 0;
2201 vc_resize(vc, info->var.xres / w, info->var.yres / h);
2202 if (CON_IS_VISIBLE(vc) && softback_buf) {
2203 int l = fbcon_softback_size / vc->vc_size_row;
2206 softback_buf + l * vc->vc_size_row;
2208 /* Smaller scrollback makes no sense, and 0 would screw
2209 the operation totally */
2213 } else if (CON_IS_VISIBLE(vc)
2214 && vc->vc_mode == KD_TEXT) {
2215 fbcon_clear_margins(vc, 0);
2219 if (old_data && (--REFCOUNT(old_data) == 0))
2220 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2224 static int fbcon_copy_font(struct vc_data *vc, int con)
2226 struct display *od = &fb_display[con];
2227 struct console_font *f = &vc->vc_font;
2229 if (od->fontdata == f->data)
2230 return 0; /* already the same font... */
2231 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2235 * User asked to set font; we are guaranteed that
2236 * a) width and height are in range 1..32
2237 * b) charcount does not exceed 512
2238 * but lets not assume that, since someone might someday want to use larger
2239 * fonts. And charcount of 512 is small for unicode support.
2241 * However, user space gives the font in 32 rows , regardless of
2242 * actual font height. So a new API is needed if support for larger fonts
2243 * is ever implemented.
2246 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2248 unsigned charcount = font->charcount;
2249 int w = font->width;
2250 int h = font->height;
2253 u8 *new_data, *data = font->data;
2254 int pitch = (font->width+7) >> 3;
2256 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2257 * If not this check should be changed to charcount < 256 */
2258 if (charcount != 256 && charcount != 512)
2261 size = h * pitch * charcount;
2263 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2268 new_data += FONT_EXTRA_WORDS * sizeof(int);
2269 FNTSIZE(new_data) = size;
2270 FNTCHARCNT(new_data) = charcount;
2271 REFCOUNT(new_data) = 0; /* usage counter */
2272 for (i=0; i< charcount; i++) {
2273 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2276 /* Since linux has a nice crc32 function use it for counting font
2278 csum = crc32(0, new_data, size);
2280 FNTSUM(new_data) = csum;
2281 /* Check if the same font is on some other console already */
2282 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2283 struct vc_data *tmp = vc_cons[i].d;
2285 if (fb_display[i].userfont &&
2286 fb_display[i].fontdata &&
2287 FNTSUM(fb_display[i].fontdata) == csum &&
2288 FNTSIZE(fb_display[i].fontdata) == size &&
2289 tmp->vc_font.width == w &&
2290 !memcmp(fb_display[i].fontdata, new_data, size)) {
2291 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2292 new_data = fb_display[i].fontdata;
2296 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2299 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2301 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2302 struct font_desc *f;
2305 f = get_default_font(info->var.xres, info->var.yres);
2306 else if (!(f = find_font(name)))
2309 font->width = f->width;
2310 font->height = f->height;
2311 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2314 static u16 palette_red[16];
2315 static u16 palette_green[16];
2316 static u16 palette_blue[16];
2318 static struct fb_cmap palette_cmap = {
2319 0, 16, palette_red, palette_green, palette_blue, NULL
2322 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2324 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2328 if (fbcon_is_inactive(vc, info))
2331 if (!CON_IS_VISIBLE(vc))
2334 depth = fb_get_color_depth(&info->var);
2336 for (i = j = 0; i < 16; i++) {
2338 val = vc->vc_palette[j++];
2339 palette_red[k] = (val << 8) | val;
2340 val = vc->vc_palette[j++];
2341 palette_green[k] = (val << 8) | val;
2342 val = vc->vc_palette[j++];
2343 palette_blue[k] = (val << 8) | val;
2345 palette_cmap.len = 16;
2346 palette_cmap.start = 0;
2348 * If framebuffer is capable of less than 16 colors,
2349 * use default palette of fbcon.
2352 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2354 return fb_set_cmap(&palette_cmap, info);
2357 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2362 if (vc->vc_num != fg_console || !softback_lines)
2363 return (u16 *) (vc->vc_origin + offset);
2364 line = offset / vc->vc_size_row;
2365 if (line >= softback_lines)
2366 return (u16 *) (vc->vc_origin + offset -
2367 softback_lines * vc->vc_size_row);
2368 p = softback_curr + offset;
2369 if (p >= softback_end)
2370 p += softback_buf - softback_end;
2374 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2380 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2381 unsigned long offset = (pos - vc->vc_origin) / 2;
2383 x = offset % vc->vc_cols;
2384 y = offset / vc->vc_cols;
2385 if (vc->vc_num == fg_console)
2386 y += softback_lines;
2387 ret = pos + (vc->vc_cols - x) * 2;
2388 } else if (vc->vc_num == fg_console && softback_lines) {
2389 unsigned long offset = pos - softback_curr;
2391 if (pos < softback_curr)
2392 offset += softback_end - softback_buf;
2394 x = offset % vc->vc_cols;
2395 y = offset / vc->vc_cols;
2396 ret = pos + (vc->vc_cols - x) * 2;
2397 if (ret == softback_end)
2399 if (ret == softback_in)
2400 ret = vc->vc_origin;
2402 /* Should not happen */
2404 ret = vc->vc_origin;
2413 /* As we might be inside of softback, we may work with non-contiguous buffer,
2414 that's why we have to use a separate routine. */
2415 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2418 u16 a = scr_readw(p);
2419 if (!vc->vc_can_do_color)
2421 else if (vc->vc_hi_font_mask == 0x100)
2422 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2423 (((a) & 0x0e00) << 4);
2425 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2426 (((a) & 0x0700) << 4);
2428 if (p == (u16 *) softback_end)
2429 p = (u16 *) softback_buf;
2430 if (p == (u16 *) softback_in)
2431 p = (u16 *) vc->vc_origin;
2435 static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2437 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2438 struct display *p = &fb_display[fg_console];
2439 int offset, limit, scrollback_old;
2442 if (vc->vc_num != fg_console)
2444 if (vc->vc_mode != KD_TEXT || !lines)
2446 if (logo_shown >= 0) {
2447 struct vc_data *conp2 = vc_cons[logo_shown].d;
2449 if (conp2->vc_top == logo_lines
2450 && conp2->vc_bottom == conp2->vc_rows)
2452 if (logo_shown == vc->vc_num) {
2458 logo_lines * vc->vc_size_row;
2459 for (i = 0; i < logo_lines; i++) {
2460 if (p == softback_top)
2462 if (p == softback_buf)
2464 p -= vc->vc_size_row;
2465 q -= vc->vc_size_row;
2466 scr_memcpyw((u16 *) q, (u16 *) p,
2470 update_region(vc, vc->vc_origin,
2471 logo_lines * vc->vc_cols);
2473 logo_shown = FBCON_LOGO_CANSHOW;
2475 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2476 fbcon_redraw_softback(vc, p, lines);
2477 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2481 if (!scrollback_phys_max)
2484 scrollback_old = scrollback_current;
2485 scrollback_current -= lines;
2486 if (scrollback_current < 0)
2487 scrollback_current = 0;
2488 else if (scrollback_current > scrollback_max)
2489 scrollback_current = scrollback_max;
2490 if (scrollback_current == scrollback_old)
2493 if (fbcon_is_inactive(vc, info))
2496 fbcon_cursor(vc, CM_ERASE);
2498 offset = p->yscroll - scrollback_current;
2500 switch (p->scrollmode) {
2501 case SCROLL_WRAP_MOVE:
2502 info->var.vmode |= FB_VMODE_YWRAP;
2504 case SCROLL_PAN_MOVE:
2505 case SCROLL_PAN_REDRAW:
2506 limit -= vc->vc_rows;
2507 info->var.vmode &= ~FB_VMODE_YWRAP;
2512 else if (offset >= limit)
2514 info->var.xoffset = 0;
2515 info->var.yoffset = offset * vc->vc_font.height;
2516 update_var(vc->vc_num, info);
2517 if (!scrollback_current)
2518 fbcon_cursor(vc, CM_DRAW);
2522 static int fbcon_set_origin(struct vc_data *vc)
2525 fbcon_scrolldelta(vc, softback_lines);
2529 static void fbcon_suspended(struct fb_info *info)
2531 struct vc_data *vc = NULL;
2532 struct fbcon_ops *ops = info->fbcon_par;
2534 if (!ops || ops->currcon < 0)
2536 vc = vc_cons[ops->currcon].d;
2538 /* Clear cursor, restore saved data */
2539 fbcon_cursor(vc, CM_ERASE);
2542 static void fbcon_resumed(struct fb_info *info)
2545 struct fbcon_ops *ops = info->fbcon_par;
2547 if (!ops || ops->currcon < 0)
2549 vc = vc_cons[ops->currcon].d;
2554 static void fbcon_modechanged(struct fb_info *info)
2556 struct fbcon_ops *ops = info->fbcon_par;
2561 if (!ops || ops->currcon < 0)
2563 vc = vc_cons[ops->currcon].d;
2564 if (vc->vc_mode != KD_TEXT || registered_fb[con2fb_map[ops->currcon]] != info)
2567 p = &fb_display[vc->vc_num];
2569 info->var.xoffset = info->var.yoffset = p->yscroll = 0;
2571 if (CON_IS_VISIBLE(vc)) {
2572 var_to_display(p, &info->var, info);
2573 cols = info->var.xres / vc->vc_font.width;
2574 rows = info->var.yres / vc->vc_font.height;
2575 vc_resize(vc, cols, rows);
2576 updatescrollmode(p, info, vc);
2578 scrollback_current = 0;
2579 update_var(vc->vc_num, info);
2580 fbcon_set_palette(vc, color_table);
2583 int l = fbcon_softback_size / vc->vc_size_row;
2585 softback_end = softback_buf + l * vc->vc_size_row;
2587 /* Smaller scrollback makes no sense, and 0
2588 would screw the operation totally */
2595 static int fbcon_mode_deleted(struct fb_info *info,
2596 struct fb_videomode *mode)
2598 struct fb_info *fb_info;
2600 int i, j, found = 0;
2602 /* before deletion, ensure that mode is not in use */
2603 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2607 fb_info = registered_fb[j];
2608 if (fb_info != info)
2613 if (fb_mode_is_equal(p->mode, mode)) {
2621 static int fbcon_fb_registered(int idx)
2625 if (info_idx == -1) {
2626 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2627 if (con2fb_map_boot[i] == idx) {
2633 ret = fbcon_takeover(1);
2635 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2636 if (con2fb_map_boot[i] == idx)
2637 set_con2fb_map(i, idx, 0);
2644 static void fbcon_fb_blanked(struct fb_info *info, int blank)
2646 struct fbcon_ops *ops = info->fbcon_par;
2649 if (!ops || ops->currcon < 0)
2652 vc = vc_cons[ops->currcon].d;
2653 if (vc->vc_mode != KD_TEXT ||
2654 registered_fb[con2fb_map[ops->currcon]] != info)
2657 if (CON_IS_VISIBLE(vc)) {
2661 do_unblank_screen(0);
2663 ops->blank_state = blank;
2666 static void fbcon_new_modelist(struct fb_info *info)
2670 struct fb_var_screeninfo var;
2671 struct fb_videomode *mode;
2673 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2674 if (registered_fb[con2fb_map[i]] != info)
2676 if (!fb_display[i].mode)
2679 display_to_var(&var, &fb_display[i]);
2680 mode = fb_find_nearest_mode(&var, &info->modelist);
2681 fb_videomode_to_var(&var, mode);
2684 fbcon_set_disp(info, &var, vc);
2686 fbcon_preset_disp(info, &var, i);
2691 static int fbcon_event_notify(struct notifier_block *self,
2692 unsigned long action, void *data)
2694 struct fb_event *event = data;
2695 struct fb_info *info = event->info;
2696 struct fb_videomode *mode;
2697 struct fb_con2fbmap *con2fb;
2701 case FB_EVENT_SUSPEND:
2702 fbcon_suspended(info);
2704 case FB_EVENT_RESUME:
2705 fbcon_resumed(info);
2707 case FB_EVENT_MODE_CHANGE:
2708 fbcon_modechanged(info);
2710 case FB_EVENT_MODE_DELETE:
2712 ret = fbcon_mode_deleted(info, mode);
2714 case FB_EVENT_FB_REGISTERED:
2715 ret = fbcon_fb_registered(info->node);
2717 case FB_EVENT_SET_CONSOLE_MAP:
2718 con2fb = event->data;
2719 ret = set_con2fb_map(con2fb->console - 1,
2720 con2fb->framebuffer, 1);
2722 case FB_EVENT_GET_CONSOLE_MAP:
2723 con2fb = event->data;
2724 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
2726 case FB_EVENT_BLANK:
2727 fbcon_fb_blanked(info, *(int *)event->data);
2729 case FB_EVENT_NEW_MODELIST:
2730 fbcon_new_modelist(info);
2738 * The console `switch' structure for the frame buffer based console
2741 static const struct consw fb_con = {
2742 .owner = THIS_MODULE,
2743 .con_startup = fbcon_startup,
2744 .con_init = fbcon_init,
2745 .con_deinit = fbcon_deinit,
2746 .con_clear = fbcon_clear,
2747 .con_putc = fbcon_putc,
2748 .con_putcs = fbcon_putcs,
2749 .con_cursor = fbcon_cursor,
2750 .con_scroll = fbcon_scroll,
2751 .con_bmove = fbcon_bmove,
2752 .con_switch = fbcon_switch,
2753 .con_blank = fbcon_blank,
2754 .con_font_set = fbcon_set_font,
2755 .con_font_get = fbcon_get_font,
2756 .con_font_default = fbcon_set_def_font,
2757 .con_font_copy = fbcon_copy_font,
2758 .con_set_palette = fbcon_set_palette,
2759 .con_scrolldelta = fbcon_scrolldelta,
2760 .con_set_origin = fbcon_set_origin,
2761 .con_invert_region = fbcon_invert_region,
2762 .con_screen_pos = fbcon_screen_pos,
2763 .con_getxy = fbcon_getxy,
2764 .con_resize = fbcon_resize,
2767 static struct notifier_block fbcon_event_notifier = {
2768 .notifier_call = fbcon_event_notify,
2771 static int __init fb_console_init(void)
2775 acquire_console_sem();
2776 fb_register_client(&fbcon_event_notifier);
2777 release_console_sem();
2779 for (i = 0; i < MAX_NR_CONSOLES; i++)
2782 if (num_registered_fb) {
2783 for (i = 0; i < FB_MAX; i++) {
2784 if (registered_fb[i] != NULL) {
2795 module_init(fb_console_init);
2799 static void __exit fb_console_exit(void)
2801 acquire_console_sem();
2802 fb_unregister_client(&fbcon_event_notifier);
2803 release_console_sem();
2804 give_up_console(&fb_con);
2807 module_exit(fb_console_exit);
2811 MODULE_LICENSE("GPL");