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 EXPORT_SYMBOL(fb_display);
112 static signed char con2fb_map[MAX_NR_CONSOLES];
113 static signed char con2fb_map_boot[MAX_NR_CONSOLES];
114 static int logo_height;
115 static int logo_lines;
116 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
118 static int logo_shown = FBCON_LOGO_CANSHOW;
119 /* Software scrollback */
120 static int fbcon_softback_size = 32768;
121 static unsigned long softback_buf, softback_curr;
122 static unsigned long softback_in;
123 static unsigned long softback_top, softback_end;
124 static int softback_lines;
125 /* console mappings */
126 static int first_fb_vc;
127 static int last_fb_vc = MAX_NR_CONSOLES - 1;
128 static int fbcon_is_default = 1;
130 static char fontname[40];
132 /* current fb_info */
133 static int info_idx = -1;
135 /* console rotation */
138 static const struct consw fb_con;
140 #define CM_SOFTBACK (8)
142 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
144 static void fbcon_free_font(struct display *);
145 static int fbcon_set_origin(struct vc_data *);
147 #define CURSOR_DRAW_DELAY (1)
149 /* # VBL ints between cursor state changes */
150 #define ATARI_CURSOR_BLINK_RATE (42)
151 #define MAC_CURSOR_BLINK_RATE (32)
152 #define DEFAULT_CURSOR_BLINK_RATE (20)
154 static int vbl_cursor_cnt;
156 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
159 * Interface used by the world
162 static const char *fbcon_startup(void);
163 static void fbcon_init(struct vc_data *vc, int init);
164 static void fbcon_deinit(struct vc_data *vc);
165 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
167 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
168 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
169 int count, int ypos, int xpos);
170 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
171 static void fbcon_cursor(struct vc_data *vc, int mode);
172 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
174 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
175 int height, int width);
176 static int fbcon_switch(struct vc_data *vc);
177 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
178 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
179 static int fbcon_scrolldelta(struct vc_data *vc, int lines);
184 static __inline__ void ywrap_up(struct vc_data *vc, int count);
185 static __inline__ void ywrap_down(struct vc_data *vc, int count);
186 static __inline__ void ypan_up(struct vc_data *vc, int count);
187 static __inline__ void ypan_down(struct vc_data *vc, int count);
188 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
189 int dy, int dx, int height, int width, u_int y_break);
190 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
192 static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
194 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
195 int line, int count, int dy);
199 * On the Macintoy, there may or may not be a working VBL int. We need to probe
201 static int vbl_detected;
203 static irqreturn_t fb_vbl_detect(int irq, void *dummy, struct pt_regs *fp)
210 static inline void fbcon_set_rotation(struct fb_info *info, struct display *p)
212 struct fbcon_ops *ops = info->fbcon_par;
214 ops->rotate = FB_ROTATE_UR;
217 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
219 struct fbcon_ops *ops = info->fbcon_par;
221 return (info->state != FBINFO_STATE_RUNNING ||
222 vc->vc_mode != KD_TEXT || ops->graphics);
225 static inline int get_color(struct vc_data *vc, struct fb_info *info,
228 int depth = fb_get_color_depth(&info->var, &info->fix);
231 if (console_blanked) {
232 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
234 c = vc->vc_video_erase_char & charmask;
238 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
239 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
244 int col = ~(0xfff << (max(info->var.green.length,
245 max(info->var.red.length,
246 info->var.blue.length)))) & 0xff;
249 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
250 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
255 color = (is_fg) ? fg : bg;
260 * Scale down 16-colors to 4 colors. Default 4-color palette
261 * is grayscale. However, simply dividing the values by 4
262 * will not work, as colors 1, 2 and 3 will be scaled-down
263 * to zero rendering them invisible. So empirically convert
264 * colors to a sane 4-level grayscale.
268 color = 0; /* black */
271 color = 2; /* white */
274 color = 1; /* gray */
277 color = 3; /* intense white */
283 * Last 8 entries of default 16-color palette is a more intense
284 * version of the first 8 (i.e., same chrominance, different
295 static void fbcon_update_softback(struct vc_data *vc)
297 int l = fbcon_softback_size / vc->vc_size_row;
300 softback_end = softback_buf + l * vc->vc_size_row;
302 /* Smaller scrollback makes no sense, and 0 would screw
303 the operation totally */
307 static void fb_flashcursor(void *private)
309 struct fb_info *info = private;
310 struct fbcon_ops *ops = info->fbcon_par;
312 struct vc_data *vc = NULL;
316 if (ops->currcon != -1)
317 vc = vc_cons[ops->currcon].d;
319 if (!vc || !CON_IS_VISIBLE(vc) ||
320 fbcon_is_inactive(vc, info) ||
321 registered_fb[con2fb_map[vc->vc_num]] != info ||
322 vc_cons[ops->currcon].d->vc_deccm != 1)
324 acquire_console_sem();
325 p = &fb_display[vc->vc_num];
326 c = scr_readw((u16 *) vc->vc_pos);
327 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
329 ops->cursor(vc, info, p, mode, softback_lines, get_color(vc, info, c, 1),
330 get_color(vc, info, c, 0));
331 release_console_sem();
334 #if defined(CONFIG_ATARI) || defined(CONFIG_MAC)
335 static int cursor_blink_rate;
336 static irqreturn_t fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp)
338 struct fb_info *info = dev_id;
340 if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) {
341 schedule_work(&info->queue);
342 vbl_cursor_cnt = cursor_blink_rate;
348 static void cursor_timer_handler(unsigned long dev_addr)
350 struct fb_info *info = (struct fb_info *) dev_addr;
351 struct fbcon_ops *ops = info->fbcon_par;
353 schedule_work(&info->queue);
354 mod_timer(&ops->cursor_timer, jiffies + HZ/5);
357 static void fbcon_add_cursor_timer(struct fb_info *info)
359 struct fbcon_ops *ops = info->fbcon_par;
361 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
362 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER)) {
363 if (!info->queue.func)
364 INIT_WORK(&info->queue, fb_flashcursor, info);
366 init_timer(&ops->cursor_timer);
367 ops->cursor_timer.function = cursor_timer_handler;
368 ops->cursor_timer.expires = jiffies + HZ / 5;
369 ops->cursor_timer.data = (unsigned long ) info;
370 add_timer(&ops->cursor_timer);
371 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
375 static void fbcon_del_cursor_timer(struct fb_info *info)
377 struct fbcon_ops *ops = info->fbcon_par;
379 if (info->queue.func == fb_flashcursor &&
380 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
381 del_timer_sync(&ops->cursor_timer);
382 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
387 static int __init fb_console_setup(char *this_opt)
392 if (!this_opt || !*this_opt)
395 while ((options = strsep(&this_opt, ",")) != NULL) {
396 if (!strncmp(options, "font:", 5))
397 strcpy(fontname, options + 5);
399 if (!strncmp(options, "scrollback:", 11)) {
402 fbcon_softback_size = simple_strtoul(options, &options, 0);
403 if (*options == 'k' || *options == 'K') {
404 fbcon_softback_size *= 1024;
414 if (!strncmp(options, "map:", 4)) {
417 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
421 (options[j++]-'0') % FB_MAX;
426 if (!strncmp(options, "vc:", 3)) {
429 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
432 if (*options++ == '-')
433 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
434 fbcon_is_default = 0;
437 if (!strncmp(options, "rotate:", 7)) {
440 rotate = simple_strtoul(options, &options, 0);
448 __setup("fbcon=", fb_console_setup);
451 static int search_fb_in_map(int idx)
455 for (i = 0; i < MAX_NR_CONSOLES; i++) {
456 if (con2fb_map[i] == idx)
462 static int search_for_mapped_con(void)
466 for (i = 0; i < MAX_NR_CONSOLES; i++) {
467 if (con2fb_map[i] != -1)
473 static int fbcon_takeover(int show_logo)
477 if (!num_registered_fb)
481 logo_shown = FBCON_LOGO_DONTSHOW;
483 for (i = first_fb_vc; i <= last_fb_vc; i++)
484 con2fb_map[i] = info_idx;
486 err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
489 for (i = first_fb_vc; i <= last_fb_vc; i++) {
498 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
499 int cols, int rows, int new_cols, int new_rows)
501 /* Need to make room for the logo */
502 struct fbcon_ops *ops = info->fbcon_par;
503 int cnt, erase = vc->vc_video_erase_char, step;
504 unsigned short *save = NULL, *r, *q;
507 * remove underline attribute from erase character
508 * if black and white framebuffer.
510 if (fb_get_color_depth(&info->var, &info->fix) == 1)
512 logo_height = fb_prepare_logo(info, ops->rotate);
513 logo_lines = (logo_height + vc->vc_font.height - 1) /
515 q = (unsigned short *) (vc->vc_origin +
516 vc->vc_size_row * rows);
517 step = logo_lines * cols;
518 for (r = q - logo_lines * cols; r < q; r++)
519 if (scr_readw(r) != vc->vc_video_erase_char)
521 if (r != q && new_rows >= rows + logo_lines) {
522 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
524 int i = cols < new_cols ? cols : new_cols;
525 scr_memsetw(save, erase, logo_lines * new_cols * 2);
527 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
528 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
533 /* We can scroll screen down */
535 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
536 scr_memcpyw(r + step, r, vc->vc_size_row);
540 vc->vc_y += logo_lines;
541 vc->vc_pos += logo_lines * vc->vc_size_row;
544 scr_memsetw((unsigned short *) vc->vc_origin,
546 vc->vc_size_row * logo_lines);
548 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
549 fbcon_clear_margins(vc, 0);
554 q = (unsigned short *) (vc->vc_origin +
557 scr_memcpyw(q, save, logo_lines * new_cols * 2);
558 vc->vc_y += logo_lines;
559 vc->vc_pos += logo_lines * vc->vc_size_row;
563 if (logo_lines > vc->vc_bottom) {
564 logo_shown = FBCON_LOGO_CANSHOW;
566 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
567 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
568 logo_shown = FBCON_LOGO_DRAW;
569 vc->vc_top = logo_lines;
573 #ifdef CONFIG_FB_TILEBLITTING
574 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
577 struct fbcon_ops *ops = info->fbcon_par;
579 if ((info->flags & FBINFO_MISC_TILEBLITTING))
580 fbcon_set_tileops(vc, info, p, ops);
582 struct display *disp;
584 disp = (p) ? p : &fb_display[vc->vc_num];
585 fbcon_set_rotation(info, disp);
586 fbcon_set_bitops(ops);
590 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
593 struct fbcon_ops *ops = info->fbcon_par;
594 struct display *disp;
596 info->flags &= ~FBINFO_MISC_TILEBLITTING;
597 disp = (p) ? p : &fb_display[vc->vc_num];
598 fbcon_set_rotation(info, disp);
599 fbcon_set_bitops(ops);
601 #endif /* CONFIG_MISC_TILEBLITTING */
604 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
605 int unit, int oldidx)
607 struct fbcon_ops *ops = NULL;
610 if (!try_module_get(info->fbops->owner))
613 if (!err && info->fbops->fb_open &&
614 info->fbops->fb_open(info, 0))
618 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
624 memset(ops, 0, sizeof(struct fbcon_ops));
625 info->fbcon_par = ops;
626 set_blitting_type(vc, info, NULL);
630 con2fb_map[unit] = oldidx;
631 module_put(info->fbops->owner);
637 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
638 struct fb_info *newinfo, int unit,
639 int oldidx, int found)
641 struct fbcon_ops *ops = oldinfo->fbcon_par;
644 if (oldinfo->fbops->fb_release &&
645 oldinfo->fbops->fb_release(oldinfo, 0)) {
646 con2fb_map[unit] = oldidx;
647 if (!found && newinfo->fbops->fb_release)
648 newinfo->fbops->fb_release(newinfo, 0);
650 module_put(newinfo->fbops->owner);
655 fbcon_del_cursor_timer(oldinfo);
656 kfree(ops->cursor_state.mask);
657 kfree(ops->cursor_data);
658 kfree(ops->fontbuffer);
659 kfree(oldinfo->fbcon_par);
660 oldinfo->fbcon_par = NULL;
661 module_put(oldinfo->fbops->owner);
663 If oldinfo and newinfo are driving the same hardware,
664 the fb_release() method of oldinfo may attempt to
665 restore the hardware state. This will leave the
666 newinfo in an undefined state. Thus, a call to
667 fb_set_par() may be needed for the newinfo.
669 if (newinfo->fbops->fb_set_par)
670 newinfo->fbops->fb_set_par(newinfo);
676 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
677 int unit, int show_logo)
679 struct fbcon_ops *ops = info->fbcon_par;
681 ops->currcon = fg_console;
683 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT))
684 info->fbops->fb_set_par(info);
686 ops->flags |= FBCON_FLAGS_INIT;
690 fbcon_set_disp(info, &info->var, vc);
692 fbcon_preset_disp(info, &info->var, unit);
695 struct vc_data *fg_vc = vc_cons[fg_console].d;
696 struct fb_info *fg_info =
697 registered_fb[con2fb_map[fg_console]];
699 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
700 fg_vc->vc_rows, fg_vc->vc_cols,
704 update_screen(vc_cons[fg_console].d);
708 * set_con2fb_map - map console to frame buffer device
709 * @unit: virtual console number to map
710 * @newidx: frame buffer index to map virtual console to
711 * @user: user request
713 * Maps a virtual console @unit to a frame buffer device
716 static int set_con2fb_map(int unit, int newidx, int user)
718 struct vc_data *vc = vc_cons[unit].d;
719 int oldidx = con2fb_map[unit];
720 struct fb_info *info = registered_fb[newidx];
721 struct fb_info *oldinfo = NULL;
724 if (oldidx == newidx)
730 if (!err && !search_for_mapped_con()) {
732 return fbcon_takeover(0);
736 oldinfo = registered_fb[oldidx];
738 found = search_fb_in_map(newidx);
740 acquire_console_sem();
741 con2fb_map[unit] = newidx;
743 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
747 * If old fb is not mapped to any of the consoles,
748 * fbcon should release it.
750 if (!err && oldinfo && !search_fb_in_map(oldidx))
751 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
755 int show_logo = (fg_console == 0 && !user &&
756 logo_shown != FBCON_LOGO_DONTSHOW);
759 fbcon_add_cursor_timer(info);
760 con2fb_map_boot[unit] = newidx;
761 con2fb_init_display(vc, info, unit, show_logo);
764 release_console_sem();
769 * Low Level Operations
771 /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
772 static int var_to_display(struct display *disp,
773 struct fb_var_screeninfo *var,
774 struct fb_info *info)
776 disp->xres_virtual = var->xres_virtual;
777 disp->yres_virtual = var->yres_virtual;
778 disp->bits_per_pixel = var->bits_per_pixel;
779 disp->grayscale = var->grayscale;
780 disp->nonstd = var->nonstd;
781 disp->accel_flags = var->accel_flags;
782 disp->height = var->height;
783 disp->width = var->width;
784 disp->red = var->red;
785 disp->green = var->green;
786 disp->blue = var->blue;
787 disp->transp = var->transp;
788 disp->rotate = var->rotate;
789 disp->mode = fb_match_mode(var, &info->modelist);
790 if (disp->mode == NULL)
791 /* This should not happen */
796 static void display_to_var(struct fb_var_screeninfo *var,
797 struct display *disp)
799 fb_videomode_to_var(var, disp->mode);
800 var->xres_virtual = disp->xres_virtual;
801 var->yres_virtual = disp->yres_virtual;
802 var->bits_per_pixel = disp->bits_per_pixel;
803 var->grayscale = disp->grayscale;
804 var->nonstd = disp->nonstd;
805 var->accel_flags = disp->accel_flags;
806 var->height = disp->height;
807 var->width = disp->width;
808 var->red = disp->red;
809 var->green = disp->green;
810 var->blue = disp->blue;
811 var->transp = disp->transp;
812 var->rotate = disp->rotate;
815 static const char *fbcon_startup(void)
817 const char *display_desc = "frame buffer device";
818 struct display *p = &fb_display[fg_console];
819 struct vc_data *vc = vc_cons[fg_console].d;
820 const struct font_desc *font = NULL;
821 struct module *owner;
822 struct fb_info *info = NULL;
823 struct fbcon_ops *ops;
829 * If num_registered_fb is zero, this is a call for the dummy part.
830 * The frame buffer devices weren't initialized yet.
832 if (!num_registered_fb || info_idx == -1)
835 * Instead of blindly using registered_fb[0], we use info_idx, set by
838 info = registered_fb[info_idx];
842 owner = info->fbops->owner;
843 if (!try_module_get(owner))
845 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
850 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
856 memset(ops, 0, sizeof(struct fbcon_ops));
859 ops->cur_rotate = -1;
860 info->fbcon_par = ops;
861 p->con_rotate = rotate;
862 set_blitting_type(vc, info, NULL);
864 if (info->fix.type != FB_TYPE_TEXT) {
865 if (fbcon_softback_size) {
869 kmalloc(fbcon_softback_size,
872 fbcon_softback_size = 0;
878 kfree((void *) softback_buf);
884 softback_in = softback_top = softback_curr =
889 /* Setup default font */
891 if (!fontname[0] || !(font = find_font(fontname)))
892 font = get_default_font(info->var.xres,
894 vc->vc_font.width = font->width;
895 vc->vc_font.height = font->height;
896 vc->vc_font.data = (void *)(p->fontdata = font->data);
897 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
900 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
901 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
902 cols /= vc->vc_font.width;
903 rows /= vc->vc_font.height;
904 vc_resize(vc, cols, rows);
906 DPRINTK("mode: %s\n", info->fix.id);
907 DPRINTK("visual: %d\n", info->fix.visual);
908 DPRINTK("res: %dx%d-%d\n", info->var.xres,
910 info->var.bits_per_pixel);
914 cursor_blink_rate = ATARI_CURSOR_BLINK_RATE;
916 request_irq(IRQ_AUTO_4, fb_vbl_handler,
917 IRQ_TYPE_PRIO, "framebuffer vbl",
920 #endif /* CONFIG_ATARI */
924 * On a Macintoy, the VBL interrupt may or may not be active.
925 * As interrupt based cursor is more reliable and race free, we
926 * probe for VBL interrupts.
931 * Probe for VBL: set temp. handler ...
933 irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0,
934 "framebuffer vbl", info);
938 * ... and spin for 20 ms ...
940 while (!vbl_detected && ++ct < 1000)
945 ("fbcon_startup: No VBL detected, using timer based cursor.\n");
947 free_irq(IRQ_MAC_VBL, fb_vbl_detect);
951 * interrupt based cursor ok
953 cursor_blink_rate = MAC_CURSOR_BLINK_RATE;
955 request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0,
956 "framebuffer vbl", info);
959 * VBL not detected: fall through, use timer based cursor
964 #endif /* CONFIG_MAC */
966 fbcon_add_cursor_timer(info);
970 static void fbcon_init(struct vc_data *vc, int init)
972 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
973 struct fbcon_ops *ops;
974 struct vc_data **default_mode = vc->vc_display_fg;
975 struct vc_data *svc = *default_mode;
976 struct display *t, *p = &fb_display[vc->vc_num];
977 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
980 if (info_idx == -1 || info == NULL)
985 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
986 (info->fix.type == FB_TYPE_TEXT))
989 if (var_to_display(p, &info->var, info))
992 /* If we are not the first console on this
993 fb, copy the font from that console */
994 t = &fb_display[svc->vc_num];
995 if (!vc->vc_font.data) {
996 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
997 vc->vc_font.width = (*default_mode)->vc_font.width;
998 vc->vc_font.height = (*default_mode)->vc_font.height;
999 p->userfont = t->userfont;
1001 REFCOUNT(p->fontdata)++;
1004 charcnt = FNTCHARCNT(p->fontdata);
1005 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1006 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1007 if (charcnt == 256) {
1008 vc->vc_hi_font_mask = 0;
1010 vc->vc_hi_font_mask = 0x100;
1011 if (vc->vc_can_do_color)
1012 vc->vc_complement_mask <<= 1;
1015 if (!*svc->vc_uni_pagedir_loc)
1016 con_set_default_unimap(svc);
1017 if (!*vc->vc_uni_pagedir_loc)
1018 con_copy_unimap(vc, svc);
1020 ops = info->fbcon_par;
1021 p->con_rotate = rotate;
1022 set_blitting_type(vc, info, NULL);
1026 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1027 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1028 new_cols /= vc->vc_font.width;
1029 new_rows /= vc->vc_font.height;
1030 vc_resize(vc, new_cols, new_rows);
1033 * We must always set the mode. The mode of the previous console
1034 * driver could be in the same resolution but we are using different
1035 * hardware so we have to initialize the hardware.
1037 * We need to do it in fbcon_init() to prevent screen corruption.
1039 if (CON_IS_VISIBLE(vc)) {
1040 if (info->fbops->fb_set_par &&
1041 !(ops->flags & FBCON_FLAGS_INIT))
1042 info->fbops->fb_set_par(info);
1043 ops->flags |= FBCON_FLAGS_INIT;
1048 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1049 !(cap & FBINFO_HWACCEL_DISABLED))
1050 p->scrollmode = SCROLL_MOVE;
1051 else /* default to something safe */
1052 p->scrollmode = SCROLL_REDRAW;
1055 * ++guenther: console.c:vc_allocate() relies on initializing
1056 * vc_{cols,rows}, but we must not set those if we are only
1057 * resizing the console.
1060 vc->vc_cols = new_cols;
1061 vc->vc_rows = new_rows;
1065 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1067 if (vc == svc && softback_buf)
1068 fbcon_update_softback(vc);
1070 if (ops->rotate_font && ops->rotate_font(info, vc, p)) {
1071 ops->rotate = FB_ROTATE_UR;
1072 set_blitting_type(vc, info, p);
1077 static void fbcon_deinit(struct vc_data *vc)
1079 struct display *p = &fb_display[vc->vc_num];
1086 /* ====================================================================== */
1088 /* fbcon_XXX routines - interface used by the world
1090 * This system is now divided into two levels because of complications
1091 * caused by hardware scrolling. Top level functions:
1093 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1095 * handles y values in range [0, scr_height-1] that correspond to real
1096 * screen positions. y_wrap shift means that first line of bitmap may be
1097 * anywhere on this display. These functions convert lineoffsets to
1098 * bitmap offsets and deal with the wrap-around case by splitting blits.
1100 * fbcon_bmove_physical_8() -- These functions fast implementations
1101 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1102 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1106 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1107 * Implies should only really hardware scroll in rows. Only reason for
1108 * restriction is simplicity & efficiency at the moment.
1111 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1114 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1115 struct fbcon_ops *ops = info->fbcon_par;
1117 struct display *p = &fb_display[vc->vc_num];
1120 if (fbcon_is_inactive(vc, info))
1123 if (!height || !width)
1126 /* Split blits that cross physical y_wrap boundary */
1128 y_break = p->vrows - p->yscroll;
1129 if (sy < y_break && sy + height - 1 >= y_break) {
1130 u_int b = y_break - sy;
1131 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1132 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1135 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1138 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1139 int count, int ypos, int xpos)
1141 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1142 struct display *p = &fb_display[vc->vc_num];
1143 struct fbcon_ops *ops = info->fbcon_par;
1145 if (!fbcon_is_inactive(vc, info))
1146 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1147 get_color(vc, info, scr_readw(s), 1),
1148 get_color(vc, info, scr_readw(s), 0));
1151 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1155 scr_writew(c, &chr);
1156 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1159 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1161 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1162 struct fbcon_ops *ops = info->fbcon_par;
1164 if (!fbcon_is_inactive(vc, info))
1165 ops->clear_margins(vc, info, bottom_only);
1168 static void fbcon_cursor(struct vc_data *vc, int mode)
1170 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1171 struct fbcon_ops *ops = info->fbcon_par;
1172 struct display *p = &fb_display[vc->vc_num];
1174 int c = scr_readw((u16 *) vc->vc_pos);
1176 if (fbcon_is_inactive(vc, info))
1179 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1180 if (mode & CM_SOFTBACK) {
1181 mode &= ~CM_SOFTBACK;
1185 fbcon_set_origin(vc);
1189 ops->cursor(vc, info, p, mode, y, get_color(vc, info, c, 1),
1190 get_color(vc, info, c, 0));
1191 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1194 static int scrollback_phys_max = 0;
1195 static int scrollback_max = 0;
1196 static int scrollback_current = 0;
1199 * If no vc is existent yet, just set struct display
1201 static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1204 struct display *p = &fb_display[unit];
1205 struct display *t = &fb_display[fg_console];
1207 if (var_to_display(p, var, info))
1210 p->fontdata = t->fontdata;
1211 p->userfont = t->userfont;
1213 REFCOUNT(p->fontdata)++;
1216 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1219 struct display *p = &fb_display[vc->vc_num], *t;
1220 struct vc_data **default_mode = vc->vc_display_fg;
1221 struct vc_data *svc = *default_mode;
1222 struct fbcon_ops *ops = info->fbcon_par;
1223 int rows, cols, charcnt = 256;
1225 if (var_to_display(p, var, info))
1227 t = &fb_display[svc->vc_num];
1228 if (!vc->vc_font.data) {
1229 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1230 vc->vc_font.width = (*default_mode)->vc_font.width;
1231 vc->vc_font.height = (*default_mode)->vc_font.height;
1232 p->userfont = t->userfont;
1234 REFCOUNT(p->fontdata)++;
1237 charcnt = FNTCHARCNT(p->fontdata);
1239 var->activate = FB_ACTIVATE_NOW;
1240 info->var.activate = var->activate;
1241 var->yoffset = info->var.yoffset;
1242 var->xoffset = info->var.xoffset;
1243 fb_set_var(info, var);
1244 ops->var = info->var;
1245 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1246 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1247 if (charcnt == 256) {
1248 vc->vc_hi_font_mask = 0;
1250 vc->vc_hi_font_mask = 0x100;
1251 if (vc->vc_can_do_color)
1252 vc->vc_complement_mask <<= 1;
1255 if (!*svc->vc_uni_pagedir_loc)
1256 con_set_default_unimap(svc);
1257 if (!*vc->vc_uni_pagedir_loc)
1258 con_copy_unimap(vc, svc);
1260 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1261 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1262 cols /= vc->vc_font.width;
1263 rows /= vc->vc_font.height;
1264 vc_resize(vc, cols, rows);
1266 if (CON_IS_VISIBLE(vc)) {
1269 fbcon_update_softback(vc);
1273 static __inline__ void ywrap_up(struct vc_data *vc, int count)
1275 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1276 struct fbcon_ops *ops = info->fbcon_par;
1277 struct display *p = &fb_display[vc->vc_num];
1279 p->yscroll += count;
1280 if (p->yscroll >= p->vrows) /* Deal with wrap */
1281 p->yscroll -= p->vrows;
1282 ops->var.xoffset = 0;
1283 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1284 ops->var.vmode |= FB_VMODE_YWRAP;
1285 ops->update_start(info);
1286 scrollback_max += count;
1287 if (scrollback_max > scrollback_phys_max)
1288 scrollback_max = scrollback_phys_max;
1289 scrollback_current = 0;
1292 static __inline__ void ywrap_down(struct vc_data *vc, int count)
1294 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1295 struct fbcon_ops *ops = info->fbcon_par;
1296 struct display *p = &fb_display[vc->vc_num];
1298 p->yscroll -= count;
1299 if (p->yscroll < 0) /* Deal with wrap */
1300 p->yscroll += p->vrows;
1301 ops->var.xoffset = 0;
1302 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1303 ops->var.vmode |= FB_VMODE_YWRAP;
1304 ops->update_start(info);
1305 scrollback_max -= count;
1306 if (scrollback_max < 0)
1308 scrollback_current = 0;
1311 static __inline__ void ypan_up(struct vc_data *vc, int count)
1313 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1314 struct display *p = &fb_display[vc->vc_num];
1315 struct fbcon_ops *ops = info->fbcon_par;
1317 p->yscroll += count;
1318 if (p->yscroll > p->vrows - vc->vc_rows) {
1319 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1320 0, 0, 0, vc->vc_rows, vc->vc_cols);
1321 p->yscroll -= p->vrows - vc->vc_rows;
1324 ops->var.xoffset = 0;
1325 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1326 ops->var.vmode &= ~FB_VMODE_YWRAP;
1327 ops->update_start(info);
1328 fbcon_clear_margins(vc, 1);
1329 scrollback_max += count;
1330 if (scrollback_max > scrollback_phys_max)
1331 scrollback_max = scrollback_phys_max;
1332 scrollback_current = 0;
1335 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1337 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1338 struct fbcon_ops *ops = info->fbcon_par;
1339 struct display *p = &fb_display[vc->vc_num];
1342 p->yscroll += count;
1343 if (p->yscroll > p->vrows - vc->vc_rows) {
1344 p->yscroll -= p->vrows - vc->vc_rows;
1349 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1351 ops->var.xoffset = 0;
1352 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1353 ops->var.vmode &= ~FB_VMODE_YWRAP;
1354 ops->update_start(info);
1355 fbcon_clear_margins(vc, 1);
1356 scrollback_max += count;
1357 if (scrollback_max > scrollback_phys_max)
1358 scrollback_max = scrollback_phys_max;
1359 scrollback_current = 0;
1362 static __inline__ void ypan_down(struct vc_data *vc, int count)
1364 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1365 struct display *p = &fb_display[vc->vc_num];
1366 struct fbcon_ops *ops = info->fbcon_par;
1368 p->yscroll -= count;
1369 if (p->yscroll < 0) {
1370 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1371 0, vc->vc_rows, vc->vc_cols);
1372 p->yscroll += p->vrows - vc->vc_rows;
1375 ops->var.xoffset = 0;
1376 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1377 ops->var.vmode &= ~FB_VMODE_YWRAP;
1378 ops->update_start(info);
1379 fbcon_clear_margins(vc, 1);
1380 scrollback_max -= count;
1381 if (scrollback_max < 0)
1383 scrollback_current = 0;
1386 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1388 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1389 struct fbcon_ops *ops = info->fbcon_par;
1390 struct display *p = &fb_display[vc->vc_num];
1393 p->yscroll -= count;
1394 if (p->yscroll < 0) {
1395 p->yscroll += p->vrows - vc->vc_rows;
1400 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1402 ops->var.xoffset = 0;
1403 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1404 ops->var.vmode &= ~FB_VMODE_YWRAP;
1405 ops->update_start(info);
1406 fbcon_clear_margins(vc, 1);
1407 scrollback_max -= count;
1408 if (scrollback_max < 0)
1410 scrollback_current = 0;
1413 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1416 int count = vc->vc_rows;
1417 unsigned short *d, *s;
1421 d = (u16 *) softback_curr;
1422 if (d == (u16 *) softback_in)
1423 d = (u16 *) vc->vc_origin;
1424 n = softback_curr + delta * vc->vc_size_row;
1425 softback_lines -= delta;
1427 if (softback_curr < softback_top && n < softback_buf) {
1428 n += softback_end - softback_buf;
1429 if (n < softback_top) {
1431 (softback_top - n) / vc->vc_size_row;
1434 } else if (softback_curr >= softback_top
1435 && n < softback_top) {
1437 (softback_top - n) / vc->vc_size_row;
1441 if (softback_curr > softback_in && n >= softback_end) {
1442 n += softback_buf - softback_end;
1443 if (n > softback_in) {
1447 } else if (softback_curr <= softback_in && n > softback_in) {
1452 if (n == softback_curr)
1455 s = (u16 *) softback_curr;
1456 if (s == (u16 *) softback_in)
1457 s = (u16 *) vc->vc_origin;
1459 unsigned short *start;
1463 unsigned short attr = 1;
1466 le = advance_row(s, 1);
1469 if (attr != (c & 0xff00)) {
1472 fbcon_putcs(vc, start, s - start,
1478 if (c == scr_readw(d)) {
1480 fbcon_putcs(vc, start, s - start,
1493 fbcon_putcs(vc, start, s - start, line, x);
1495 if (d == (u16 *) softback_end)
1496 d = (u16 *) softback_buf;
1497 if (d == (u16 *) softback_in)
1498 d = (u16 *) vc->vc_origin;
1499 if (s == (u16 *) softback_end)
1500 s = (u16 *) softback_buf;
1501 if (s == (u16 *) softback_in)
1502 s = (u16 *) vc->vc_origin;
1506 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1507 int line, int count, int dy)
1509 unsigned short *s = (unsigned short *)
1510 (vc->vc_origin + vc->vc_size_row * line);
1513 unsigned short *start = s;
1514 unsigned short *le = advance_row(s, 1);
1517 unsigned short attr = 1;
1521 if (attr != (c & 0xff00)) {
1524 fbcon_putcs(vc, start, s - start,
1530 console_conditional_schedule();
1534 fbcon_putcs(vc, start, s - start, dy, x);
1535 console_conditional_schedule();
1540 static void fbcon_redraw(struct vc_data *vc, struct display *p,
1541 int line, int count, int offset)
1543 unsigned short *d = (unsigned short *)
1544 (vc->vc_origin + vc->vc_size_row * line);
1545 unsigned short *s = d + offset;
1548 unsigned short *start = s;
1549 unsigned short *le = advance_row(s, 1);
1552 unsigned short attr = 1;
1556 if (attr != (c & 0xff00)) {
1559 fbcon_putcs(vc, start, s - start,
1565 if (c == scr_readw(d)) {
1567 fbcon_putcs(vc, start, s - start,
1577 console_conditional_schedule();
1582 fbcon_putcs(vc, start, s - start, line, x);
1583 console_conditional_schedule();
1588 /* NOTE: We subtract two lines from these pointers */
1589 s -= vc->vc_size_row;
1590 d -= vc->vc_size_row;
1595 static inline void fbcon_softback_note(struct vc_data *vc, int t,
1600 if (vc->vc_num != fg_console)
1602 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1605 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1607 p = advance_row(p, 1);
1608 softback_in += vc->vc_size_row;
1609 if (softback_in == softback_end)
1610 softback_in = softback_buf;
1611 if (softback_in == softback_top) {
1612 softback_top += vc->vc_size_row;
1613 if (softback_top == softback_end)
1614 softback_top = softback_buf;
1617 softback_curr = softback_in;
1620 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1623 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1624 struct display *p = &fb_display[vc->vc_num];
1625 struct fbcon_ops *ops = info->fbcon_par;
1626 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1628 if (fbcon_is_inactive(vc, info))
1631 fbcon_cursor(vc, CM_ERASE);
1634 * ++Geert: Only use ywrap/ypan if the console is in text mode
1635 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1636 * whole screen (prevents flicker).
1641 if (count > vc->vc_rows) /* Maximum realistic size */
1642 count = vc->vc_rows;
1644 fbcon_softback_note(vc, t, count);
1645 if (logo_shown >= 0)
1647 switch (p->scrollmode) {
1649 ops->bmove(vc, info, t + count, 0, t, 0,
1650 b - t - count, vc->vc_cols);
1651 ops->clear(vc, info, b - count, 0, count,
1655 case SCROLL_WRAP_MOVE:
1656 if (b - t - count > 3 * vc->vc_rows >> 2) {
1658 fbcon_bmove(vc, 0, 0, count, 0, t,
1660 ywrap_up(vc, count);
1661 if (vc->vc_rows - b > 0)
1662 fbcon_bmove(vc, b - count, 0, b, 0,
1665 } else if (info->flags & FBINFO_READS_FAST)
1666 fbcon_bmove(vc, t + count, 0, t, 0,
1667 b - t - count, vc->vc_cols);
1670 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1673 case SCROLL_PAN_REDRAW:
1674 if ((p->yscroll + count <=
1675 2 * (p->vrows - vc->vc_rows))
1676 && ((!scroll_partial && (b - t == vc->vc_rows))
1679 3 * vc->vc_rows >> 2)))) {
1681 fbcon_redraw_move(vc, p, 0, t, count);
1682 ypan_up_redraw(vc, t, count);
1683 if (vc->vc_rows - b > 0)
1684 fbcon_redraw_move(vc, p, b - count,
1685 vc->vc_rows - b, b);
1687 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1688 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1691 case SCROLL_PAN_MOVE:
1692 if ((p->yscroll + count <=
1693 2 * (p->vrows - vc->vc_rows))
1694 && ((!scroll_partial && (b - t == vc->vc_rows))
1697 3 * vc->vc_rows >> 2)))) {
1699 fbcon_bmove(vc, 0, 0, count, 0, t,
1702 if (vc->vc_rows - b > 0)
1703 fbcon_bmove(vc, b - count, 0, b, 0,
1706 } else if (info->flags & FBINFO_READS_FAST)
1707 fbcon_bmove(vc, t + count, 0, t, 0,
1708 b - t - count, vc->vc_cols);
1711 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1716 fbcon_redraw(vc, p, t, b - t - count,
1717 count * vc->vc_cols);
1718 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1719 scr_memsetw((unsigned short *) (vc->vc_origin +
1722 vc->vc_video_erase_char,
1723 vc->vc_size_row * count);
1729 if (count > vc->vc_rows) /* Maximum realistic size */
1730 count = vc->vc_rows;
1731 if (logo_shown >= 0)
1733 switch (p->scrollmode) {
1735 ops->bmove(vc, info, t, 0, t + count, 0,
1736 b - t - count, vc->vc_cols);
1737 ops->clear(vc, info, t, 0, count, vc->vc_cols);
1740 case SCROLL_WRAP_MOVE:
1741 if (b - t - count > 3 * vc->vc_rows >> 2) {
1742 if (vc->vc_rows - b > 0)
1743 fbcon_bmove(vc, b, 0, b - count, 0,
1746 ywrap_down(vc, count);
1748 fbcon_bmove(vc, count, 0, 0, 0, t,
1750 } else if (info->flags & FBINFO_READS_FAST)
1751 fbcon_bmove(vc, t, 0, t + count, 0,
1752 b - t - count, vc->vc_cols);
1755 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1758 case SCROLL_PAN_MOVE:
1759 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1760 && ((!scroll_partial && (b - t == vc->vc_rows))
1763 3 * vc->vc_rows >> 2)))) {
1764 if (vc->vc_rows - b > 0)
1765 fbcon_bmove(vc, b, 0, b - count, 0,
1768 ypan_down(vc, count);
1770 fbcon_bmove(vc, count, 0, 0, 0, t,
1772 } else if (info->flags & FBINFO_READS_FAST)
1773 fbcon_bmove(vc, t, 0, t + count, 0,
1774 b - t - count, vc->vc_cols);
1777 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1780 case SCROLL_PAN_REDRAW:
1781 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1782 && ((!scroll_partial && (b - t == vc->vc_rows))
1785 3 * vc->vc_rows >> 2)))) {
1786 if (vc->vc_rows - b > 0)
1787 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1789 ypan_down_redraw(vc, t, count);
1791 fbcon_redraw_move(vc, p, count, t, 0);
1793 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1794 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1799 fbcon_redraw(vc, p, b - 1, b - t - count,
1800 -count * vc->vc_cols);
1801 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1802 scr_memsetw((unsigned short *) (vc->vc_origin +
1805 vc->vc_video_erase_char,
1806 vc->vc_size_row * count);
1814 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
1815 int height, int width)
1817 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1818 struct display *p = &fb_display[vc->vc_num];
1820 if (fbcon_is_inactive(vc, info))
1823 if (!width || !height)
1826 /* Split blits that cross physical y_wrap case.
1827 * Pathological case involves 4 blits, better to use recursive
1828 * code rather than unrolled case
1830 * Recursive invocations don't need to erase the cursor over and
1831 * over again, so we use fbcon_bmove_rec()
1833 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
1834 p->vrows - p->yscroll);
1837 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
1838 int dy, int dx, int height, int width, u_int y_break)
1840 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1841 struct fbcon_ops *ops = info->fbcon_par;
1844 if (sy < y_break && sy + height > y_break) {
1846 if (dy < sy) { /* Avoid trashing self */
1847 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1849 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1850 height - b, width, y_break);
1852 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1853 height - b, width, y_break);
1854 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1860 if (dy < y_break && dy + height > y_break) {
1862 if (dy < sy) { /* Avoid trashing self */
1863 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1865 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1866 height - b, width, y_break);
1868 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1869 height - b, width, y_break);
1870 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1875 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
1879 static __inline__ void updatescrollmode(struct display *p,
1880 struct fb_info *info,
1883 struct fbcon_ops *ops = info->fbcon_par;
1884 int fh = vc->vc_font.height;
1885 int cap = info->flags;
1887 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
1888 info->fix.xpanstep);
1889 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
1890 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1891 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
1892 info->var.xres_virtual);
1893 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
1894 divides(ypan, vc->vc_font.height) && vyres > yres;
1895 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
1896 divides(ywrap, vc->vc_font.height) &&
1897 divides(vc->vc_font.height, vyres);
1898 int reading_fast = cap & FBINFO_READS_FAST;
1899 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
1900 !(cap & FBINFO_HWACCEL_DISABLED);
1901 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
1902 !(cap & FBINFO_HWACCEL_DISABLED);
1904 p->vrows = vyres/fh;
1905 if (yres > (fh * (vc->vc_rows + 1)))
1906 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
1907 if ((yres % fh) && (vyres % fh < yres % fh))
1910 if (good_wrap || good_pan) {
1911 if (reading_fast || fast_copyarea)
1912 p->scrollmode = good_wrap ?
1913 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1915 p->scrollmode = good_wrap ? SCROLL_REDRAW :
1918 if (reading_fast || (fast_copyarea && !fast_imageblit))
1919 p->scrollmode = SCROLL_MOVE;
1921 p->scrollmode = SCROLL_REDRAW;
1925 static int fbcon_resize(struct vc_data *vc, unsigned int width,
1926 unsigned int height)
1928 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1929 struct fbcon_ops *ops = info->fbcon_par;
1930 struct display *p = &fb_display[vc->vc_num];
1931 struct fb_var_screeninfo var = info->var;
1932 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
1934 virt_w = FBCON_SWAP(ops->rotate, width, height);
1935 virt_h = FBCON_SWAP(ops->rotate, height, width);
1936 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
1937 vc->vc_font.height);
1938 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
1940 var.xres = virt_w * virt_fw;
1941 var.yres = virt_h * virt_fh;
1942 x_diff = info->var.xres - var.xres;
1943 y_diff = info->var.yres - var.yres;
1944 if (x_diff < 0 || x_diff > virt_fw ||
1945 y_diff < 0 || y_diff > virt_fh) {
1946 struct fb_videomode *mode;
1948 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
1949 mode = fb_find_best_mode(&var, &info->modelist);
1952 display_to_var(&var, p);
1953 fb_videomode_to_var(&var, mode);
1955 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
1958 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
1959 if (CON_IS_VISIBLE(vc)) {
1960 var.activate = FB_ACTIVATE_NOW |
1962 fb_set_var(info, &var);
1964 var_to_display(p, &info->var, info);
1965 ops->var = info->var;
1967 updatescrollmode(p, info, vc);
1971 static int fbcon_switch(struct vc_data *vc)
1973 struct fb_info *info, *old_info = NULL;
1974 struct fbcon_ops *ops;
1975 struct display *p = &fb_display[vc->vc_num];
1976 struct fb_var_screeninfo var;
1977 int i, prev_console;
1979 info = registered_fb[con2fb_map[vc->vc_num]];
1980 ops = info->fbcon_par;
1984 fbcon_set_origin(vc);
1985 softback_top = softback_curr = softback_in = softback_buf;
1987 fbcon_update_softback(vc);
1990 if (logo_shown >= 0) {
1991 struct vc_data *conp2 = vc_cons[logo_shown].d;
1993 if (conp2->vc_top == logo_lines
1994 && conp2->vc_bottom == conp2->vc_rows)
1996 logo_shown = FBCON_LOGO_CANSHOW;
1999 prev_console = ops->currcon;
2000 if (prev_console != -1)
2001 old_info = registered_fb[con2fb_map[prev_console]];
2003 * FIXME: If we have multiple fbdev's loaded, we need to
2004 * update all info->currcon. Perhaps, we can place this
2005 * in a centralized structure, but this might break some
2008 * info->currcon = vc->vc_num;
2010 for (i = 0; i < FB_MAX; i++) {
2011 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
2012 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
2014 o->currcon = vc->vc_num;
2017 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2018 display_to_var(&var, p);
2019 var.activate = FB_ACTIVATE_NOW;
2022 * make sure we don't unnecessarily trip the memcmp()
2025 info->var.activate = var.activate;
2026 var.yoffset = info->var.yoffset;
2027 var.xoffset = info->var.xoffset;
2028 var.vmode = info->var.vmode;
2029 fb_set_var(info, &var);
2030 ops->var = info->var;
2032 if (old_info != NULL && old_info != info) {
2033 if (info->fbops->fb_set_par)
2034 info->fbops->fb_set_par(info);
2035 fbcon_del_cursor_timer(old_info);
2036 fbcon_add_cursor_timer(info);
2039 set_blitting_type(vc, info, p);
2040 ops->cursor_reset = 1;
2042 if (ops->rotate_font && ops->rotate_font(info, vc, p)) {
2043 ops->rotate = FB_ROTATE_UR;
2044 set_blitting_type(vc, info, p);
2047 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
2048 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
2049 updatescrollmode(p, info, vc);
2051 switch (p->scrollmode) {
2052 case SCROLL_WRAP_MOVE:
2053 scrollback_phys_max = p->vrows - vc->vc_rows;
2055 case SCROLL_PAN_MOVE:
2056 case SCROLL_PAN_REDRAW:
2057 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2058 if (scrollback_phys_max < 0)
2059 scrollback_phys_max = 0;
2062 scrollback_phys_max = 0;
2067 scrollback_current = 0;
2068 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2069 ops->update_start(info);
2070 fbcon_set_palette(vc, color_table);
2071 fbcon_clear_margins(vc, 0);
2073 if (logo_shown == FBCON_LOGO_DRAW) {
2075 logo_shown = fg_console;
2076 /* This is protected above by initmem_freed */
2077 fb_show_logo(info, ops->rotate);
2079 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2080 vc->vc_size_row * (vc->vc_bottom -
2087 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2091 unsigned short charmask = vc->vc_hi_font_mask ?
2093 unsigned short oldc;
2095 oldc = vc->vc_video_erase_char;
2096 vc->vc_video_erase_char &= charmask;
2097 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2098 vc->vc_video_erase_char = oldc;
2102 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2104 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2105 struct fbcon_ops *ops = info->fbcon_par;
2108 struct fb_var_screeninfo var = info->var;
2113 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2114 fb_set_var(info, &var);
2116 ops->var = info->var;
2120 if (!fbcon_is_inactive(vc, info)) {
2121 if (ops->blank_state != blank) {
2122 ops->blank_state = blank;
2123 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2124 ops->cursor_flash = (!blank);
2126 if (fb_blank(info, blank))
2127 fbcon_generic_blank(vc, info, blank);
2135 fbcon_add_cursor_timer(info);
2137 fbcon_del_cursor_timer(info);
2142 static void fbcon_free_font(struct display *p)
2144 if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
2145 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
2150 static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2152 u8 *fontdata = vc->vc_font.data;
2153 u8 *data = font->data;
2156 font->width = vc->vc_font.width;
2157 font->height = vc->vc_font.height;
2158 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2162 if (font->width <= 8) {
2163 j = vc->vc_font.height;
2164 for (i = 0; i < font->charcount; i++) {
2165 memcpy(data, fontdata, j);
2166 memset(data + j, 0, 32 - j);
2170 } else if (font->width <= 16) {
2171 j = vc->vc_font.height * 2;
2172 for (i = 0; i < font->charcount; i++) {
2173 memcpy(data, fontdata, j);
2174 memset(data + j, 0, 64 - j);
2178 } else if (font->width <= 24) {
2179 for (i = 0; i < font->charcount; i++) {
2180 for (j = 0; j < vc->vc_font.height; j++) {
2181 *data++ = fontdata[0];
2182 *data++ = fontdata[1];
2183 *data++ = fontdata[2];
2184 fontdata += sizeof(u32);
2186 memset(data, 0, 3 * (32 - j));
2187 data += 3 * (32 - j);
2190 j = vc->vc_font.height * 4;
2191 for (i = 0; i < font->charcount; i++) {
2192 memcpy(data, fontdata, j);
2193 memset(data + j, 0, 128 - j);
2201 static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2202 const u8 * data, int userfont)
2204 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2205 struct fbcon_ops *ops = info->fbcon_par;
2206 struct display *p = &fb_display[vc->vc_num];
2209 char *old_data = NULL;
2211 if (CON_IS_VISIBLE(vc) && softback_lines)
2212 fbcon_set_origin(vc);
2214 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2216 old_data = vc->vc_font.data;
2218 cnt = FNTCHARCNT(data);
2221 vc->vc_font.data = (void *)(p->fontdata = data);
2222 if ((p->userfont = userfont))
2224 vc->vc_font.width = w;
2225 vc->vc_font.height = h;
2226 if (vc->vc_hi_font_mask && cnt == 256) {
2227 vc->vc_hi_font_mask = 0;
2228 if (vc->vc_can_do_color) {
2229 vc->vc_complement_mask >>= 1;
2230 vc->vc_s_complement_mask >>= 1;
2233 /* ++Edmund: reorder the attribute bits */
2234 if (vc->vc_can_do_color) {
2235 unsigned short *cp =
2236 (unsigned short *) vc->vc_origin;
2237 int count = vc->vc_screenbuf_size / 2;
2239 for (; count > 0; count--, cp++) {
2241 scr_writew(((c & 0xfe00) >> 1) |
2244 c = vc->vc_video_erase_char;
2245 vc->vc_video_erase_char =
2246 ((c & 0xfe00) >> 1) | (c & 0xff);
2249 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2250 vc->vc_hi_font_mask = 0x100;
2251 if (vc->vc_can_do_color) {
2252 vc->vc_complement_mask <<= 1;
2253 vc->vc_s_complement_mask <<= 1;
2256 /* ++Edmund: reorder the attribute bits */
2258 unsigned short *cp =
2259 (unsigned short *) vc->vc_origin;
2260 int count = vc->vc_screenbuf_size / 2;
2262 for (; count > 0; count--, cp++) {
2263 unsigned short newc;
2265 if (vc->vc_can_do_color)
2267 ((c & 0xff00) << 1) | (c &
2271 scr_writew(newc, cp);
2273 c = vc->vc_video_erase_char;
2274 if (vc->vc_can_do_color) {
2275 vc->vc_video_erase_char =
2276 ((c & 0xff00) << 1) | (c & 0xff);
2279 vc->vc_video_erase_char = c & ~0x100;
2287 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2288 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2291 vc_resize(vc, cols, rows);
2292 if (CON_IS_VISIBLE(vc) && softback_buf)
2293 fbcon_update_softback(vc);
2294 } else if (CON_IS_VISIBLE(vc)
2295 && vc->vc_mode == KD_TEXT) {
2296 fbcon_clear_margins(vc, 0);
2300 if (old_data && (--REFCOUNT(old_data) == 0))
2301 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2305 static int fbcon_copy_font(struct vc_data *vc, int con)
2307 struct display *od = &fb_display[con];
2308 struct console_font *f = &vc->vc_font;
2310 if (od->fontdata == f->data)
2311 return 0; /* already the same font... */
2312 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2316 * User asked to set font; we are guaranteed that
2317 * a) width and height are in range 1..32
2318 * b) charcount does not exceed 512
2319 * but lets not assume that, since someone might someday want to use larger
2320 * fonts. And charcount of 512 is small for unicode support.
2322 * However, user space gives the font in 32 rows , regardless of
2323 * actual font height. So a new API is needed if support for larger fonts
2324 * is ever implemented.
2327 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2329 unsigned charcount = font->charcount;
2330 int w = font->width;
2331 int h = font->height;
2334 u8 *new_data, *data = font->data;
2335 int pitch = (font->width+7) >> 3;
2337 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2338 * If not this check should be changed to charcount < 256 */
2339 if (charcount != 256 && charcount != 512)
2342 size = h * pitch * charcount;
2344 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2349 new_data += FONT_EXTRA_WORDS * sizeof(int);
2350 FNTSIZE(new_data) = size;
2351 FNTCHARCNT(new_data) = charcount;
2352 REFCOUNT(new_data) = 0; /* usage counter */
2353 for (i=0; i< charcount; i++) {
2354 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2357 /* Since linux has a nice crc32 function use it for counting font
2359 csum = crc32(0, new_data, size);
2361 FNTSUM(new_data) = csum;
2362 /* Check if the same font is on some other console already */
2363 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2364 struct vc_data *tmp = vc_cons[i].d;
2366 if (fb_display[i].userfont &&
2367 fb_display[i].fontdata &&
2368 FNTSUM(fb_display[i].fontdata) == csum &&
2369 FNTSIZE(fb_display[i].fontdata) == size &&
2370 tmp->vc_font.width == w &&
2371 !memcmp(fb_display[i].fontdata, new_data, size)) {
2372 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2373 new_data = (u8 *)fb_display[i].fontdata;
2377 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2380 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2382 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2383 const struct font_desc *f;
2386 f = get_default_font(info->var.xres, info->var.yres);
2387 else if (!(f = find_font(name)))
2390 font->width = f->width;
2391 font->height = f->height;
2392 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2395 static u16 palette_red[16];
2396 static u16 palette_green[16];
2397 static u16 palette_blue[16];
2399 static struct fb_cmap palette_cmap = {
2400 0, 16, palette_red, palette_green, palette_blue, NULL
2403 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2405 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2409 if (fbcon_is_inactive(vc, info))
2412 if (!CON_IS_VISIBLE(vc))
2415 depth = fb_get_color_depth(&info->var, &info->fix);
2417 for (i = j = 0; i < 16; i++) {
2419 val = vc->vc_palette[j++];
2420 palette_red[k] = (val << 8) | val;
2421 val = vc->vc_palette[j++];
2422 palette_green[k] = (val << 8) | val;
2423 val = vc->vc_palette[j++];
2424 palette_blue[k] = (val << 8) | val;
2426 palette_cmap.len = 16;
2427 palette_cmap.start = 0;
2429 * If framebuffer is capable of less than 16 colors,
2430 * use default palette of fbcon.
2433 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2435 return fb_set_cmap(&palette_cmap, info);
2438 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2443 if (vc->vc_num != fg_console || !softback_lines)
2444 return (u16 *) (vc->vc_origin + offset);
2445 line = offset / vc->vc_size_row;
2446 if (line >= softback_lines)
2447 return (u16 *) (vc->vc_origin + offset -
2448 softback_lines * vc->vc_size_row);
2449 p = softback_curr + offset;
2450 if (p >= softback_end)
2451 p += softback_buf - softback_end;
2455 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2461 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2462 unsigned long offset = (pos - vc->vc_origin) / 2;
2464 x = offset % vc->vc_cols;
2465 y = offset / vc->vc_cols;
2466 if (vc->vc_num == fg_console)
2467 y += softback_lines;
2468 ret = pos + (vc->vc_cols - x) * 2;
2469 } else if (vc->vc_num == fg_console && softback_lines) {
2470 unsigned long offset = pos - softback_curr;
2472 if (pos < softback_curr)
2473 offset += softback_end - softback_buf;
2475 x = offset % vc->vc_cols;
2476 y = offset / vc->vc_cols;
2477 ret = pos + (vc->vc_cols - x) * 2;
2478 if (ret == softback_end)
2480 if (ret == softback_in)
2481 ret = vc->vc_origin;
2483 /* Should not happen */
2485 ret = vc->vc_origin;
2494 /* As we might be inside of softback, we may work with non-contiguous buffer,
2495 that's why we have to use a separate routine. */
2496 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2499 u16 a = scr_readw(p);
2500 if (!vc->vc_can_do_color)
2502 else if (vc->vc_hi_font_mask == 0x100)
2503 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2504 (((a) & 0x0e00) << 4);
2506 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2507 (((a) & 0x0700) << 4);
2509 if (p == (u16 *) softback_end)
2510 p = (u16 *) softback_buf;
2511 if (p == (u16 *) softback_in)
2512 p = (u16 *) vc->vc_origin;
2516 static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2518 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2519 struct fbcon_ops *ops = info->fbcon_par;
2520 struct display *p = &fb_display[fg_console];
2521 int offset, limit, scrollback_old;
2524 if (vc->vc_num != fg_console)
2526 if (vc->vc_mode != KD_TEXT || !lines)
2528 if (logo_shown >= 0) {
2529 struct vc_data *conp2 = vc_cons[logo_shown].d;
2531 if (conp2->vc_top == logo_lines
2532 && conp2->vc_bottom == conp2->vc_rows)
2534 if (logo_shown == vc->vc_num) {
2540 logo_lines * vc->vc_size_row;
2541 for (i = 0; i < logo_lines; i++) {
2542 if (p == softback_top)
2544 if (p == softback_buf)
2546 p -= vc->vc_size_row;
2547 q -= vc->vc_size_row;
2548 scr_memcpyw((u16 *) q, (u16 *) p,
2552 update_region(vc, vc->vc_origin,
2553 logo_lines * vc->vc_cols);
2555 logo_shown = FBCON_LOGO_CANSHOW;
2557 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2558 fbcon_redraw_softback(vc, p, lines);
2559 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2563 if (!scrollback_phys_max)
2566 scrollback_old = scrollback_current;
2567 scrollback_current -= lines;
2568 if (scrollback_current < 0)
2569 scrollback_current = 0;
2570 else if (scrollback_current > scrollback_max)
2571 scrollback_current = scrollback_max;
2572 if (scrollback_current == scrollback_old)
2575 if (fbcon_is_inactive(vc, info))
2578 fbcon_cursor(vc, CM_ERASE);
2580 offset = p->yscroll - scrollback_current;
2582 switch (p->scrollmode) {
2583 case SCROLL_WRAP_MOVE:
2584 info->var.vmode |= FB_VMODE_YWRAP;
2586 case SCROLL_PAN_MOVE:
2587 case SCROLL_PAN_REDRAW:
2588 limit -= vc->vc_rows;
2589 info->var.vmode &= ~FB_VMODE_YWRAP;
2594 else if (offset >= limit)
2597 ops->var.xoffset = 0;
2598 ops->var.yoffset = offset * vc->vc_font.height;
2599 ops->update_start(info);
2601 if (!scrollback_current)
2602 fbcon_cursor(vc, CM_DRAW);
2606 static int fbcon_set_origin(struct vc_data *vc)
2609 fbcon_scrolldelta(vc, softback_lines);
2613 static void fbcon_suspended(struct fb_info *info)
2615 struct vc_data *vc = NULL;
2616 struct fbcon_ops *ops = info->fbcon_par;
2618 if (!ops || ops->currcon < 0)
2620 vc = vc_cons[ops->currcon].d;
2622 /* Clear cursor, restore saved data */
2623 fbcon_cursor(vc, CM_ERASE);
2626 static void fbcon_resumed(struct fb_info *info)
2629 struct fbcon_ops *ops = info->fbcon_par;
2631 if (!ops || ops->currcon < 0)
2633 vc = vc_cons[ops->currcon].d;
2638 static void fbcon_modechanged(struct fb_info *info)
2640 struct fbcon_ops *ops = info->fbcon_par;
2645 if (!ops || ops->currcon < 0)
2647 vc = vc_cons[ops->currcon].d;
2648 if (vc->vc_mode != KD_TEXT ||
2649 registered_fb[con2fb_map[ops->currcon]] != info)
2652 p = &fb_display[vc->vc_num];
2653 set_blitting_type(vc, info, p);
2655 if (CON_IS_VISIBLE(vc)) {
2656 var_to_display(p, &info->var, info);
2657 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2658 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2659 cols /= vc->vc_font.width;
2660 rows /= vc->vc_font.height;
2661 vc_resize(vc, cols, rows);
2662 updatescrollmode(p, info, vc);
2664 scrollback_current = 0;
2665 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2666 ops->update_start(info);
2667 fbcon_set_palette(vc, color_table);
2670 fbcon_update_softback(vc);
2674 static void fbcon_set_all_vcs(struct fb_info *info)
2676 struct fbcon_ops *ops = info->fbcon_par;
2681 if (!ops || ops->currcon < 0)
2684 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2686 if (!vc || vc->vc_mode != KD_TEXT ||
2687 registered_fb[con2fb_map[i]] != info)
2690 p = &fb_display[vc->vc_num];
2691 set_blitting_type(vc, info, p);
2692 var_to_display(p, &info->var, info);
2693 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2694 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2695 cols /= vc->vc_font.width;
2696 rows /= vc->vc_font.height;
2697 vc_resize(vc, cols, rows);
2699 if (CON_IS_VISIBLE(vc)) {
2700 updatescrollmode(p, info, vc);
2702 scrollback_current = 0;
2703 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2704 ops->update_start(info);
2705 fbcon_set_palette(vc, color_table);
2708 fbcon_update_softback(vc);
2713 static int fbcon_mode_deleted(struct fb_info *info,
2714 struct fb_videomode *mode)
2716 struct fb_info *fb_info;
2718 int i, j, found = 0;
2720 /* before deletion, ensure that mode is not in use */
2721 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2725 fb_info = registered_fb[j];
2726 if (fb_info != info)
2731 if (fb_mode_is_equal(p->mode, mode)) {
2739 static int fbcon_fb_registered(int idx)
2743 if (info_idx == -1) {
2744 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2745 if (con2fb_map_boot[i] == idx) {
2751 ret = fbcon_takeover(1);
2753 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2754 if (con2fb_map_boot[i] == idx)
2755 set_con2fb_map(i, idx, 0);
2762 static void fbcon_fb_blanked(struct fb_info *info, int blank)
2764 struct fbcon_ops *ops = info->fbcon_par;
2767 if (!ops || ops->currcon < 0)
2770 vc = vc_cons[ops->currcon].d;
2771 if (vc->vc_mode != KD_TEXT ||
2772 registered_fb[con2fb_map[ops->currcon]] != info)
2775 if (CON_IS_VISIBLE(vc)) {
2779 do_unblank_screen(0);
2781 ops->blank_state = blank;
2784 static void fbcon_new_modelist(struct fb_info *info)
2788 struct fb_var_screeninfo var;
2789 struct fb_videomode *mode;
2791 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2792 if (registered_fb[con2fb_map[i]] != info)
2794 if (!fb_display[i].mode)
2797 display_to_var(&var, &fb_display[i]);
2798 mode = fb_find_nearest_mode(fb_display[i].mode,
2800 fb_videomode_to_var(&var, mode);
2803 fbcon_set_disp(info, &var, vc);
2805 fbcon_preset_disp(info, &var, i);
2810 static int fbcon_event_notify(struct notifier_block *self,
2811 unsigned long action, void *data)
2813 struct fb_event *event = data;
2814 struct fb_info *info = event->info;
2815 struct fb_videomode *mode;
2816 struct fb_con2fbmap *con2fb;
2820 case FB_EVENT_SUSPEND:
2821 fbcon_suspended(info);
2823 case FB_EVENT_RESUME:
2824 fbcon_resumed(info);
2826 case FB_EVENT_MODE_CHANGE:
2827 fbcon_modechanged(info);
2829 case FB_EVENT_MODE_CHANGE_ALL:
2830 fbcon_set_all_vcs(info);
2832 case FB_EVENT_MODE_DELETE:
2834 ret = fbcon_mode_deleted(info, mode);
2836 case FB_EVENT_FB_REGISTERED:
2837 ret = fbcon_fb_registered(info->node);
2839 case FB_EVENT_SET_CONSOLE_MAP:
2840 con2fb = event->data;
2841 ret = set_con2fb_map(con2fb->console - 1,
2842 con2fb->framebuffer, 1);
2844 case FB_EVENT_GET_CONSOLE_MAP:
2845 con2fb = event->data;
2846 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
2848 case FB_EVENT_BLANK:
2849 fbcon_fb_blanked(info, *(int *)event->data);
2851 case FB_EVENT_NEW_MODELIST:
2852 fbcon_new_modelist(info);
2860 * The console `switch' structure for the frame buffer based console
2863 static const struct consw fb_con = {
2864 .owner = THIS_MODULE,
2865 .con_startup = fbcon_startup,
2866 .con_init = fbcon_init,
2867 .con_deinit = fbcon_deinit,
2868 .con_clear = fbcon_clear,
2869 .con_putc = fbcon_putc,
2870 .con_putcs = fbcon_putcs,
2871 .con_cursor = fbcon_cursor,
2872 .con_scroll = fbcon_scroll,
2873 .con_bmove = fbcon_bmove,
2874 .con_switch = fbcon_switch,
2875 .con_blank = fbcon_blank,
2876 .con_font_set = fbcon_set_font,
2877 .con_font_get = fbcon_get_font,
2878 .con_font_default = fbcon_set_def_font,
2879 .con_font_copy = fbcon_copy_font,
2880 .con_set_palette = fbcon_set_palette,
2881 .con_scrolldelta = fbcon_scrolldelta,
2882 .con_set_origin = fbcon_set_origin,
2883 .con_invert_region = fbcon_invert_region,
2884 .con_screen_pos = fbcon_screen_pos,
2885 .con_getxy = fbcon_getxy,
2886 .con_resize = fbcon_resize,
2889 static struct notifier_block fbcon_event_notifier = {
2890 .notifier_call = fbcon_event_notify,
2893 static int __init fb_console_init(void)
2897 acquire_console_sem();
2898 fb_register_client(&fbcon_event_notifier);
2899 release_console_sem();
2901 for (i = 0; i < MAX_NR_CONSOLES; i++)
2904 if (num_registered_fb) {
2905 for (i = 0; i < FB_MAX; i++) {
2906 if (registered_fb[i] != NULL) {
2917 module_init(fb_console_init);
2921 static void __exit fb_console_exit(void)
2923 acquire_console_sem();
2924 fb_unregister_client(&fbcon_event_notifier);
2925 release_console_sem();
2926 give_up_console(&fb_con);
2929 module_exit(fb_console_exit);
2933 MODULE_LICENSE("GPL");