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 int cnt, erase = vc->vc_video_erase_char, step;
503 unsigned short *save = NULL, *r, *q;
506 * remove underline attribute from erase character
507 * if black and white framebuffer.
509 if (fb_get_color_depth(&info->var, &info->fix) == 1)
511 logo_height = fb_prepare_logo(info);
512 logo_lines = (logo_height + vc->vc_font.height - 1) /
514 q = (unsigned short *) (vc->vc_origin +
515 vc->vc_size_row * rows);
516 step = logo_lines * cols;
517 for (r = q - logo_lines * cols; r < q; r++)
518 if (scr_readw(r) != vc->vc_video_erase_char)
520 if (r != q && new_rows >= rows + logo_lines) {
521 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
523 int i = cols < new_cols ? cols : new_cols;
524 scr_memsetw(save, erase, logo_lines * new_cols * 2);
526 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
527 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
532 /* We can scroll screen down */
534 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
535 scr_memcpyw(r + step, r, vc->vc_size_row);
539 vc->vc_y += logo_lines;
540 vc->vc_pos += logo_lines * vc->vc_size_row;
543 scr_memsetw((unsigned short *) vc->vc_origin,
545 vc->vc_size_row * logo_lines);
547 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
548 fbcon_clear_margins(vc, 0);
553 q = (unsigned short *) (vc->vc_origin +
556 scr_memcpyw(q, save, logo_lines * new_cols * 2);
557 vc->vc_y += logo_lines;
558 vc->vc_pos += logo_lines * vc->vc_size_row;
562 if (logo_lines > vc->vc_bottom) {
563 logo_shown = FBCON_LOGO_CANSHOW;
565 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
566 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
567 logo_shown = FBCON_LOGO_DRAW;
568 vc->vc_top = logo_lines;
572 #ifdef CONFIG_FB_TILEBLITTING
573 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
576 struct fbcon_ops *ops = info->fbcon_par;
578 if ((info->flags & FBINFO_MISC_TILEBLITTING))
579 fbcon_set_tileops(vc, info, p, ops);
581 struct display *disp;
583 disp = (p) ? p : &fb_display[vc->vc_num];
584 fbcon_set_rotation(info, disp);
585 fbcon_set_bitops(ops);
589 static void set_blitting_type(struct vc_data *vc, struct fb_info *info,
592 struct fbcon_ops *ops = info->fbcon_par;
593 struct display *disp;
595 info->flags &= ~FBINFO_MISC_TILEBLITTING;
596 disp = (p) ? p : &fb_display[vc->vc_num];
597 fbcon_set_rotation(info, disp);
598 fbcon_set_bitops(ops);
600 #endif /* CONFIG_MISC_TILEBLITTING */
603 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
604 int unit, int oldidx)
606 struct fbcon_ops *ops = NULL;
609 if (!try_module_get(info->fbops->owner))
612 if (!err && info->fbops->fb_open &&
613 info->fbops->fb_open(info, 0))
617 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
623 memset(ops, 0, sizeof(struct fbcon_ops));
624 info->fbcon_par = ops;
625 set_blitting_type(vc, info, NULL);
629 con2fb_map[unit] = oldidx;
630 module_put(info->fbops->owner);
636 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
637 struct fb_info *newinfo, int unit,
638 int oldidx, int found)
640 struct fbcon_ops *ops = oldinfo->fbcon_par;
643 if (oldinfo->fbops->fb_release &&
644 oldinfo->fbops->fb_release(oldinfo, 0)) {
645 con2fb_map[unit] = oldidx;
646 if (!found && newinfo->fbops->fb_release)
647 newinfo->fbops->fb_release(newinfo, 0);
649 module_put(newinfo->fbops->owner);
654 fbcon_del_cursor_timer(oldinfo);
655 kfree(ops->cursor_state.mask);
656 kfree(ops->cursor_data);
657 kfree(ops->fontbuffer);
658 kfree(oldinfo->fbcon_par);
659 oldinfo->fbcon_par = NULL;
660 module_put(oldinfo->fbops->owner);
662 If oldinfo and newinfo are driving the same hardware,
663 the fb_release() method of oldinfo may attempt to
664 restore the hardware state. This will leave the
665 newinfo in an undefined state. Thus, a call to
666 fb_set_par() may be needed for the newinfo.
668 if (newinfo->fbops->fb_set_par)
669 newinfo->fbops->fb_set_par(newinfo);
675 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
676 int unit, int show_logo)
678 struct fbcon_ops *ops = info->fbcon_par;
680 ops->currcon = fg_console;
682 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT))
683 info->fbops->fb_set_par(info);
685 ops->flags |= FBCON_FLAGS_INIT;
689 fbcon_set_disp(info, &info->var, vc);
691 fbcon_preset_disp(info, &info->var, unit);
694 struct vc_data *fg_vc = vc_cons[fg_console].d;
695 struct fb_info *fg_info =
696 registered_fb[con2fb_map[fg_console]];
698 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
699 fg_vc->vc_rows, fg_vc->vc_cols,
703 update_screen(vc_cons[fg_console].d);
707 * set_con2fb_map - map console to frame buffer device
708 * @unit: virtual console number to map
709 * @newidx: frame buffer index to map virtual console to
710 * @user: user request
712 * Maps a virtual console @unit to a frame buffer device
715 static int set_con2fb_map(int unit, int newidx, int user)
717 struct vc_data *vc = vc_cons[unit].d;
718 int oldidx = con2fb_map[unit];
719 struct fb_info *info = registered_fb[newidx];
720 struct fb_info *oldinfo = NULL;
723 if (oldidx == newidx)
729 if (!err && !search_for_mapped_con()) {
731 return fbcon_takeover(0);
735 oldinfo = registered_fb[oldidx];
737 found = search_fb_in_map(newidx);
739 acquire_console_sem();
740 con2fb_map[unit] = newidx;
742 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
746 * If old fb is not mapped to any of the consoles,
747 * fbcon should release it.
749 if (!err && oldinfo && !search_fb_in_map(oldidx))
750 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
754 int show_logo = (fg_console == 0 && !user &&
755 logo_shown != FBCON_LOGO_DONTSHOW);
758 fbcon_add_cursor_timer(info);
759 con2fb_map_boot[unit] = newidx;
760 con2fb_init_display(vc, info, unit, show_logo);
763 release_console_sem();
768 * Low Level Operations
770 /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
771 static int var_to_display(struct display *disp,
772 struct fb_var_screeninfo *var,
773 struct fb_info *info)
775 disp->xres_virtual = var->xres_virtual;
776 disp->yres_virtual = var->yres_virtual;
777 disp->bits_per_pixel = var->bits_per_pixel;
778 disp->grayscale = var->grayscale;
779 disp->nonstd = var->nonstd;
780 disp->accel_flags = var->accel_flags;
781 disp->height = var->height;
782 disp->width = var->width;
783 disp->red = var->red;
784 disp->green = var->green;
785 disp->blue = var->blue;
786 disp->transp = var->transp;
787 disp->rotate = var->rotate;
788 disp->mode = fb_match_mode(var, &info->modelist);
789 if (disp->mode == NULL)
790 /* This should not happen */
795 static void display_to_var(struct fb_var_screeninfo *var,
796 struct display *disp)
798 fb_videomode_to_var(var, disp->mode);
799 var->xres_virtual = disp->xres_virtual;
800 var->yres_virtual = disp->yres_virtual;
801 var->bits_per_pixel = disp->bits_per_pixel;
802 var->grayscale = disp->grayscale;
803 var->nonstd = disp->nonstd;
804 var->accel_flags = disp->accel_flags;
805 var->height = disp->height;
806 var->width = disp->width;
807 var->red = disp->red;
808 var->green = disp->green;
809 var->blue = disp->blue;
810 var->transp = disp->transp;
811 var->rotate = disp->rotate;
814 static const char *fbcon_startup(void)
816 const char *display_desc = "frame buffer device";
817 struct display *p = &fb_display[fg_console];
818 struct vc_data *vc = vc_cons[fg_console].d;
819 const struct font_desc *font = NULL;
820 struct module *owner;
821 struct fb_info *info = NULL;
822 struct fbcon_ops *ops;
828 * If num_registered_fb is zero, this is a call for the dummy part.
829 * The frame buffer devices weren't initialized yet.
831 if (!num_registered_fb || info_idx == -1)
834 * Instead of blindly using registered_fb[0], we use info_idx, set by
837 info = registered_fb[info_idx];
841 owner = info->fbops->owner;
842 if (!try_module_get(owner))
844 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
849 ops = kmalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
855 memset(ops, 0, sizeof(struct fbcon_ops));
858 ops->cur_rotate = -1;
859 info->fbcon_par = ops;
860 p->con_rotate = rotate;
861 set_blitting_type(vc, info, NULL);
863 if (info->fix.type != FB_TYPE_TEXT) {
864 if (fbcon_softback_size) {
868 kmalloc(fbcon_softback_size,
871 fbcon_softback_size = 0;
877 kfree((void *) softback_buf);
883 softback_in = softback_top = softback_curr =
888 /* Setup default font */
890 if (!fontname[0] || !(font = find_font(fontname)))
891 font = get_default_font(info->var.xres,
893 vc->vc_font.width = font->width;
894 vc->vc_font.height = font->height;
895 vc->vc_font.data = (void *)(p->fontdata = font->data);
896 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
899 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
900 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
901 cols /= vc->vc_font.width;
902 rows /= vc->vc_font.height;
903 vc_resize(vc, cols, rows);
905 DPRINTK("mode: %s\n", info->fix.id);
906 DPRINTK("visual: %d\n", info->fix.visual);
907 DPRINTK("res: %dx%d-%d\n", info->var.xres,
909 info->var.bits_per_pixel);
913 cursor_blink_rate = ATARI_CURSOR_BLINK_RATE;
915 request_irq(IRQ_AUTO_4, fb_vbl_handler,
916 IRQ_TYPE_PRIO, "framebuffer vbl",
919 #endif /* CONFIG_ATARI */
923 * On a Macintoy, the VBL interrupt may or may not be active.
924 * As interrupt based cursor is more reliable and race free, we
925 * probe for VBL interrupts.
930 * Probe for VBL: set temp. handler ...
932 irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0,
933 "framebuffer vbl", info);
937 * ... and spin for 20 ms ...
939 while (!vbl_detected && ++ct < 1000)
944 ("fbcon_startup: No VBL detected, using timer based cursor.\n");
946 free_irq(IRQ_MAC_VBL, fb_vbl_detect);
950 * interrupt based cursor ok
952 cursor_blink_rate = MAC_CURSOR_BLINK_RATE;
954 request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0,
955 "framebuffer vbl", info);
958 * VBL not detected: fall through, use timer based cursor
963 #endif /* CONFIG_MAC */
965 fbcon_add_cursor_timer(info);
969 static void fbcon_init(struct vc_data *vc, int init)
971 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
972 struct fbcon_ops *ops;
973 struct vc_data **default_mode = vc->vc_display_fg;
974 struct vc_data *svc = *default_mode;
975 struct display *t, *p = &fb_display[vc->vc_num];
976 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
979 if (info_idx == -1 || info == NULL)
984 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
985 (info->fix.type == FB_TYPE_TEXT))
988 if (var_to_display(p, &info->var, info))
991 /* If we are not the first console on this
992 fb, copy the font from that console */
993 t = &fb_display[svc->vc_num];
994 if (!vc->vc_font.data) {
995 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
996 vc->vc_font.width = (*default_mode)->vc_font.width;
997 vc->vc_font.height = (*default_mode)->vc_font.height;
998 p->userfont = t->userfont;
1000 REFCOUNT(p->fontdata)++;
1003 charcnt = FNTCHARCNT(p->fontdata);
1004 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1005 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1006 if (charcnt == 256) {
1007 vc->vc_hi_font_mask = 0;
1009 vc->vc_hi_font_mask = 0x100;
1010 if (vc->vc_can_do_color)
1011 vc->vc_complement_mask <<= 1;
1014 if (!*svc->vc_uni_pagedir_loc)
1015 con_set_default_unimap(svc);
1016 if (!*vc->vc_uni_pagedir_loc)
1017 con_copy_unimap(vc, svc);
1019 ops = info->fbcon_par;
1020 p->con_rotate = rotate;
1021 set_blitting_type(vc, info, NULL);
1025 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1026 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1027 new_cols /= vc->vc_font.width;
1028 new_rows /= vc->vc_font.height;
1029 vc_resize(vc, new_cols, new_rows);
1032 * We must always set the mode. The mode of the previous console
1033 * driver could be in the same resolution but we are using different
1034 * hardware so we have to initialize the hardware.
1036 * We need to do it in fbcon_init() to prevent screen corruption.
1038 if (CON_IS_VISIBLE(vc)) {
1039 if (info->fbops->fb_set_par &&
1040 !(ops->flags & FBCON_FLAGS_INIT))
1041 info->fbops->fb_set_par(info);
1042 ops->flags |= FBCON_FLAGS_INIT;
1047 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1048 !(cap & FBINFO_HWACCEL_DISABLED))
1049 p->scrollmode = SCROLL_MOVE;
1050 else /* default to something safe */
1051 p->scrollmode = SCROLL_REDRAW;
1054 * ++guenther: console.c:vc_allocate() relies on initializing
1055 * vc_{cols,rows}, but we must not set those if we are only
1056 * resizing the console.
1059 vc->vc_cols = new_cols;
1060 vc->vc_rows = new_rows;
1064 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1066 if (vc == svc && softback_buf)
1067 fbcon_update_softback(vc);
1069 if (ops->rotate_font && ops->rotate_font(info, vc, p)) {
1070 ops->rotate = FB_ROTATE_UR;
1071 set_blitting_type(vc, info, p);
1076 static void fbcon_deinit(struct vc_data *vc)
1078 struct display *p = &fb_display[vc->vc_num];
1085 /* ====================================================================== */
1087 /* fbcon_XXX routines - interface used by the world
1089 * This system is now divided into two levels because of complications
1090 * caused by hardware scrolling. Top level functions:
1092 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1094 * handles y values in range [0, scr_height-1] that correspond to real
1095 * screen positions. y_wrap shift means that first line of bitmap may be
1096 * anywhere on this display. These functions convert lineoffsets to
1097 * bitmap offsets and deal with the wrap-around case by splitting blits.
1099 * fbcon_bmove_physical_8() -- These functions fast implementations
1100 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1101 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1105 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1106 * Implies should only really hardware scroll in rows. Only reason for
1107 * restriction is simplicity & efficiency at the moment.
1110 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1113 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1114 struct fbcon_ops *ops = info->fbcon_par;
1116 struct display *p = &fb_display[vc->vc_num];
1119 if (fbcon_is_inactive(vc, info))
1122 if (!height || !width)
1125 /* Split blits that cross physical y_wrap boundary */
1127 y_break = p->vrows - p->yscroll;
1128 if (sy < y_break && sy + height - 1 >= y_break) {
1129 u_int b = y_break - sy;
1130 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1131 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1134 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1137 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1138 int count, int ypos, int xpos)
1140 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1141 struct display *p = &fb_display[vc->vc_num];
1142 struct fbcon_ops *ops = info->fbcon_par;
1144 if (!fbcon_is_inactive(vc, info))
1145 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1146 get_color(vc, info, scr_readw(s), 1),
1147 get_color(vc, info, scr_readw(s), 0));
1150 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1154 scr_writew(c, &chr);
1155 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1158 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1160 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1161 struct fbcon_ops *ops = info->fbcon_par;
1163 if (!fbcon_is_inactive(vc, info))
1164 ops->clear_margins(vc, info, bottom_only);
1167 static void fbcon_cursor(struct vc_data *vc, int mode)
1169 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1170 struct fbcon_ops *ops = info->fbcon_par;
1171 struct display *p = &fb_display[vc->vc_num];
1173 int c = scr_readw((u16 *) vc->vc_pos);
1175 if (fbcon_is_inactive(vc, info))
1178 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1179 if (mode & CM_SOFTBACK) {
1180 mode &= ~CM_SOFTBACK;
1184 fbcon_set_origin(vc);
1188 ops->cursor(vc, info, p, mode, y, get_color(vc, info, c, 1),
1189 get_color(vc, info, c, 0));
1190 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1193 static int scrollback_phys_max = 0;
1194 static int scrollback_max = 0;
1195 static int scrollback_current = 0;
1198 * If no vc is existent yet, just set struct display
1200 static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1203 struct display *p = &fb_display[unit];
1204 struct display *t = &fb_display[fg_console];
1206 if (var_to_display(p, var, info))
1209 p->fontdata = t->fontdata;
1210 p->userfont = t->userfont;
1212 REFCOUNT(p->fontdata)++;
1215 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1218 struct display *p = &fb_display[vc->vc_num], *t;
1219 struct vc_data **default_mode = vc->vc_display_fg;
1220 struct vc_data *svc = *default_mode;
1221 struct fbcon_ops *ops = info->fbcon_par;
1222 int rows, cols, charcnt = 256;
1224 if (var_to_display(p, var, info))
1226 t = &fb_display[svc->vc_num];
1227 if (!vc->vc_font.data) {
1228 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1229 vc->vc_font.width = (*default_mode)->vc_font.width;
1230 vc->vc_font.height = (*default_mode)->vc_font.height;
1231 p->userfont = t->userfont;
1233 REFCOUNT(p->fontdata)++;
1236 charcnt = FNTCHARCNT(p->fontdata);
1238 var->activate = FB_ACTIVATE_NOW;
1239 info->var.activate = var->activate;
1240 var->yoffset = info->var.yoffset;
1241 var->xoffset = info->var.xoffset;
1242 fb_set_var(info, var);
1243 ops->var = info->var;
1244 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1245 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1246 if (charcnt == 256) {
1247 vc->vc_hi_font_mask = 0;
1249 vc->vc_hi_font_mask = 0x100;
1250 if (vc->vc_can_do_color)
1251 vc->vc_complement_mask <<= 1;
1254 if (!*svc->vc_uni_pagedir_loc)
1255 con_set_default_unimap(svc);
1256 if (!*vc->vc_uni_pagedir_loc)
1257 con_copy_unimap(vc, svc);
1259 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1260 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1261 cols /= vc->vc_font.width;
1262 rows /= vc->vc_font.height;
1263 vc_resize(vc, cols, rows);
1265 if (CON_IS_VISIBLE(vc)) {
1268 fbcon_update_softback(vc);
1272 static __inline__ void ywrap_up(struct vc_data *vc, int count)
1274 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1275 struct fbcon_ops *ops = info->fbcon_par;
1276 struct display *p = &fb_display[vc->vc_num];
1278 p->yscroll += count;
1279 if (p->yscroll >= p->vrows) /* Deal with wrap */
1280 p->yscroll -= p->vrows;
1281 ops->var.xoffset = 0;
1282 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1283 ops->var.vmode |= FB_VMODE_YWRAP;
1284 ops->update_start(info);
1285 scrollback_max += count;
1286 if (scrollback_max > scrollback_phys_max)
1287 scrollback_max = scrollback_phys_max;
1288 scrollback_current = 0;
1291 static __inline__ void ywrap_down(struct vc_data *vc, int count)
1293 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1294 struct fbcon_ops *ops = info->fbcon_par;
1295 struct display *p = &fb_display[vc->vc_num];
1297 p->yscroll -= count;
1298 if (p->yscroll < 0) /* Deal with wrap */
1299 p->yscroll += p->vrows;
1300 ops->var.xoffset = 0;
1301 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1302 ops->var.vmode |= FB_VMODE_YWRAP;
1303 ops->update_start(info);
1304 scrollback_max -= count;
1305 if (scrollback_max < 0)
1307 scrollback_current = 0;
1310 static __inline__ void ypan_up(struct vc_data *vc, int count)
1312 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1313 struct display *p = &fb_display[vc->vc_num];
1314 struct fbcon_ops *ops = info->fbcon_par;
1316 p->yscroll += count;
1317 if (p->yscroll > p->vrows - vc->vc_rows) {
1318 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1319 0, 0, 0, vc->vc_rows, vc->vc_cols);
1320 p->yscroll -= p->vrows - vc->vc_rows;
1323 ops->var.xoffset = 0;
1324 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1325 ops->var.vmode &= ~FB_VMODE_YWRAP;
1326 ops->update_start(info);
1327 fbcon_clear_margins(vc, 1);
1328 scrollback_max += count;
1329 if (scrollback_max > scrollback_phys_max)
1330 scrollback_max = scrollback_phys_max;
1331 scrollback_current = 0;
1334 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1336 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1337 struct fbcon_ops *ops = info->fbcon_par;
1338 struct display *p = &fb_display[vc->vc_num];
1341 p->yscroll += count;
1342 if (p->yscroll > p->vrows - vc->vc_rows) {
1343 p->yscroll -= p->vrows - vc->vc_rows;
1348 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1350 ops->var.xoffset = 0;
1351 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1352 ops->var.vmode &= ~FB_VMODE_YWRAP;
1353 ops->update_start(info);
1354 fbcon_clear_margins(vc, 1);
1355 scrollback_max += count;
1356 if (scrollback_max > scrollback_phys_max)
1357 scrollback_max = scrollback_phys_max;
1358 scrollback_current = 0;
1361 static __inline__ void ypan_down(struct vc_data *vc, int count)
1363 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1364 struct display *p = &fb_display[vc->vc_num];
1365 struct fbcon_ops *ops = info->fbcon_par;
1367 p->yscroll -= count;
1368 if (p->yscroll < 0) {
1369 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1370 0, vc->vc_rows, vc->vc_cols);
1371 p->yscroll += p->vrows - vc->vc_rows;
1374 ops->var.xoffset = 0;
1375 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1376 ops->var.vmode &= ~FB_VMODE_YWRAP;
1377 ops->update_start(info);
1378 fbcon_clear_margins(vc, 1);
1379 scrollback_max -= count;
1380 if (scrollback_max < 0)
1382 scrollback_current = 0;
1385 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1387 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1388 struct fbcon_ops *ops = info->fbcon_par;
1389 struct display *p = &fb_display[vc->vc_num];
1392 p->yscroll -= count;
1393 if (p->yscroll < 0) {
1394 p->yscroll += p->vrows - vc->vc_rows;
1399 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1401 ops->var.xoffset = 0;
1402 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1403 ops->var.vmode &= ~FB_VMODE_YWRAP;
1404 ops->update_start(info);
1405 fbcon_clear_margins(vc, 1);
1406 scrollback_max -= count;
1407 if (scrollback_max < 0)
1409 scrollback_current = 0;
1412 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1415 int count = vc->vc_rows;
1416 unsigned short *d, *s;
1420 d = (u16 *) softback_curr;
1421 if (d == (u16 *) softback_in)
1422 d = (u16 *) vc->vc_origin;
1423 n = softback_curr + delta * vc->vc_size_row;
1424 softback_lines -= delta;
1426 if (softback_curr < softback_top && n < softback_buf) {
1427 n += softback_end - softback_buf;
1428 if (n < softback_top) {
1430 (softback_top - n) / vc->vc_size_row;
1433 } else if (softback_curr >= softback_top
1434 && n < softback_top) {
1436 (softback_top - n) / vc->vc_size_row;
1440 if (softback_curr > softback_in && n >= softback_end) {
1441 n += softback_buf - softback_end;
1442 if (n > softback_in) {
1446 } else if (softback_curr <= softback_in && n > softback_in) {
1451 if (n == softback_curr)
1454 s = (u16 *) softback_curr;
1455 if (s == (u16 *) softback_in)
1456 s = (u16 *) vc->vc_origin;
1458 unsigned short *start;
1462 unsigned short attr = 1;
1465 le = advance_row(s, 1);
1468 if (attr != (c & 0xff00)) {
1471 fbcon_putcs(vc, start, s - start,
1477 if (c == scr_readw(d)) {
1479 fbcon_putcs(vc, start, s - start,
1492 fbcon_putcs(vc, start, s - start, line, x);
1494 if (d == (u16 *) softback_end)
1495 d = (u16 *) softback_buf;
1496 if (d == (u16 *) softback_in)
1497 d = (u16 *) vc->vc_origin;
1498 if (s == (u16 *) softback_end)
1499 s = (u16 *) softback_buf;
1500 if (s == (u16 *) softback_in)
1501 s = (u16 *) vc->vc_origin;
1505 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1506 int line, int count, int dy)
1508 unsigned short *s = (unsigned short *)
1509 (vc->vc_origin + vc->vc_size_row * line);
1512 unsigned short *start = s;
1513 unsigned short *le = advance_row(s, 1);
1516 unsigned short attr = 1;
1520 if (attr != (c & 0xff00)) {
1523 fbcon_putcs(vc, start, s - start,
1529 console_conditional_schedule();
1533 fbcon_putcs(vc, start, s - start, dy, x);
1534 console_conditional_schedule();
1539 static void fbcon_redraw(struct vc_data *vc, struct display *p,
1540 int line, int count, int offset)
1542 unsigned short *d = (unsigned short *)
1543 (vc->vc_origin + vc->vc_size_row * line);
1544 unsigned short *s = d + offset;
1547 unsigned short *start = s;
1548 unsigned short *le = advance_row(s, 1);
1551 unsigned short attr = 1;
1555 if (attr != (c & 0xff00)) {
1558 fbcon_putcs(vc, start, s - start,
1564 if (c == scr_readw(d)) {
1566 fbcon_putcs(vc, start, s - start,
1576 console_conditional_schedule();
1581 fbcon_putcs(vc, start, s - start, line, x);
1582 console_conditional_schedule();
1587 /* NOTE: We subtract two lines from these pointers */
1588 s -= vc->vc_size_row;
1589 d -= vc->vc_size_row;
1594 static inline void fbcon_softback_note(struct vc_data *vc, int t,
1599 if (vc->vc_num != fg_console)
1601 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1604 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1606 p = advance_row(p, 1);
1607 softback_in += vc->vc_size_row;
1608 if (softback_in == softback_end)
1609 softback_in = softback_buf;
1610 if (softback_in == softback_top) {
1611 softback_top += vc->vc_size_row;
1612 if (softback_top == softback_end)
1613 softback_top = softback_buf;
1616 softback_curr = softback_in;
1619 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1622 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1623 struct display *p = &fb_display[vc->vc_num];
1624 struct fbcon_ops *ops = info->fbcon_par;
1625 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1627 if (fbcon_is_inactive(vc, info))
1630 fbcon_cursor(vc, CM_ERASE);
1633 * ++Geert: Only use ywrap/ypan if the console is in text mode
1634 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1635 * whole screen (prevents flicker).
1640 if (count > vc->vc_rows) /* Maximum realistic size */
1641 count = vc->vc_rows;
1643 fbcon_softback_note(vc, t, count);
1644 if (logo_shown >= 0)
1646 switch (p->scrollmode) {
1648 ops->bmove(vc, info, t + count, 0, t, 0,
1649 b - t - count, vc->vc_cols);
1650 ops->clear(vc, info, b - count, 0, count,
1654 case SCROLL_WRAP_MOVE:
1655 if (b - t - count > 3 * vc->vc_rows >> 2) {
1657 fbcon_bmove(vc, 0, 0, count, 0, t,
1659 ywrap_up(vc, count);
1660 if (vc->vc_rows - b > 0)
1661 fbcon_bmove(vc, b - count, 0, b, 0,
1664 } else if (info->flags & FBINFO_READS_FAST)
1665 fbcon_bmove(vc, t + count, 0, t, 0,
1666 b - t - count, vc->vc_cols);
1669 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1672 case SCROLL_PAN_REDRAW:
1673 if ((p->yscroll + count <=
1674 2 * (p->vrows - vc->vc_rows))
1675 && ((!scroll_partial && (b - t == vc->vc_rows))
1678 3 * vc->vc_rows >> 2)))) {
1680 fbcon_redraw_move(vc, p, 0, t, count);
1681 ypan_up_redraw(vc, t, count);
1682 if (vc->vc_rows - b > 0)
1683 fbcon_redraw_move(vc, p, b - count,
1684 vc->vc_rows - b, b);
1686 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1687 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1690 case SCROLL_PAN_MOVE:
1691 if ((p->yscroll + count <=
1692 2 * (p->vrows - vc->vc_rows))
1693 && ((!scroll_partial && (b - t == vc->vc_rows))
1696 3 * vc->vc_rows >> 2)))) {
1698 fbcon_bmove(vc, 0, 0, count, 0, t,
1701 if (vc->vc_rows - b > 0)
1702 fbcon_bmove(vc, b - count, 0, b, 0,
1705 } else if (info->flags & FBINFO_READS_FAST)
1706 fbcon_bmove(vc, t + count, 0, t, 0,
1707 b - t - count, vc->vc_cols);
1710 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1715 fbcon_redraw(vc, p, t, b - t - count,
1716 count * vc->vc_cols);
1717 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1718 scr_memsetw((unsigned short *) (vc->vc_origin +
1721 vc->vc_video_erase_char,
1722 vc->vc_size_row * count);
1728 if (count > vc->vc_rows) /* Maximum realistic size */
1729 count = vc->vc_rows;
1730 if (logo_shown >= 0)
1732 switch (p->scrollmode) {
1734 ops->bmove(vc, info, t, 0, t + count, 0,
1735 b - t - count, vc->vc_cols);
1736 ops->clear(vc, info, t, 0, count, vc->vc_cols);
1739 case SCROLL_WRAP_MOVE:
1740 if (b - t - count > 3 * vc->vc_rows >> 2) {
1741 if (vc->vc_rows - b > 0)
1742 fbcon_bmove(vc, b, 0, b - count, 0,
1745 ywrap_down(vc, count);
1747 fbcon_bmove(vc, count, 0, 0, 0, t,
1749 } else if (info->flags & FBINFO_READS_FAST)
1750 fbcon_bmove(vc, t, 0, t + count, 0,
1751 b - t - count, vc->vc_cols);
1754 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1757 case SCROLL_PAN_MOVE:
1758 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1759 && ((!scroll_partial && (b - t == vc->vc_rows))
1762 3 * vc->vc_rows >> 2)))) {
1763 if (vc->vc_rows - b > 0)
1764 fbcon_bmove(vc, b, 0, b - count, 0,
1767 ypan_down(vc, count);
1769 fbcon_bmove(vc, count, 0, 0, 0, t,
1771 } else if (info->flags & FBINFO_READS_FAST)
1772 fbcon_bmove(vc, t, 0, t + count, 0,
1773 b - t - count, vc->vc_cols);
1776 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1779 case SCROLL_PAN_REDRAW:
1780 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1781 && ((!scroll_partial && (b - t == vc->vc_rows))
1784 3 * vc->vc_rows >> 2)))) {
1785 if (vc->vc_rows - b > 0)
1786 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1788 ypan_down_redraw(vc, t, count);
1790 fbcon_redraw_move(vc, p, count, t, 0);
1792 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1793 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1798 fbcon_redraw(vc, p, b - 1, b - t - count,
1799 -count * vc->vc_cols);
1800 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1801 scr_memsetw((unsigned short *) (vc->vc_origin +
1804 vc->vc_video_erase_char,
1805 vc->vc_size_row * count);
1813 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
1814 int height, int width)
1816 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1817 struct display *p = &fb_display[vc->vc_num];
1819 if (fbcon_is_inactive(vc, info))
1822 if (!width || !height)
1825 /* Split blits that cross physical y_wrap case.
1826 * Pathological case involves 4 blits, better to use recursive
1827 * code rather than unrolled case
1829 * Recursive invocations don't need to erase the cursor over and
1830 * over again, so we use fbcon_bmove_rec()
1832 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
1833 p->vrows - p->yscroll);
1836 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
1837 int dy, int dx, int height, int width, u_int y_break)
1839 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1840 struct fbcon_ops *ops = info->fbcon_par;
1843 if (sy < y_break && sy + height > y_break) {
1845 if (dy < sy) { /* Avoid trashing self */
1846 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1848 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1849 height - b, width, y_break);
1851 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1852 height - b, width, y_break);
1853 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1859 if (dy < y_break && dy + height > y_break) {
1861 if (dy < sy) { /* Avoid trashing self */
1862 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1864 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1865 height - b, width, y_break);
1867 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
1868 height - b, width, y_break);
1869 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
1874 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
1878 static __inline__ void updatescrollmode(struct display *p,
1879 struct fb_info *info,
1882 struct fbcon_ops *ops = info->fbcon_par;
1883 int fh = vc->vc_font.height;
1884 int cap = info->flags;
1886 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
1887 info->fix.xpanstep);
1888 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
1889 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1890 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
1891 info->var.xres_virtual);
1892 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
1893 divides(ypan, vc->vc_font.height) && vyres > yres;
1894 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
1895 divides(ywrap, vc->vc_font.height) &&
1896 divides(vc->vc_font.height, vyres);
1897 int reading_fast = cap & FBINFO_READS_FAST;
1898 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
1899 !(cap & FBINFO_HWACCEL_DISABLED);
1900 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
1901 !(cap & FBINFO_HWACCEL_DISABLED);
1903 p->vrows = vyres/fh;
1904 if (yres > (fh * (vc->vc_rows + 1)))
1905 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
1906 if ((yres % fh) && (vyres % fh < yres % fh))
1909 if (good_wrap || good_pan) {
1910 if (reading_fast || fast_copyarea)
1911 p->scrollmode = good_wrap ?
1912 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
1914 p->scrollmode = good_wrap ? SCROLL_REDRAW :
1917 if (reading_fast || (fast_copyarea && !fast_imageblit))
1918 p->scrollmode = SCROLL_MOVE;
1920 p->scrollmode = SCROLL_REDRAW;
1924 static int fbcon_resize(struct vc_data *vc, unsigned int width,
1925 unsigned int height)
1927 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1928 struct fbcon_ops *ops = info->fbcon_par;
1929 struct display *p = &fb_display[vc->vc_num];
1930 struct fb_var_screeninfo var = info->var;
1931 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
1933 virt_w = FBCON_SWAP(ops->rotate, width, height);
1934 virt_h = FBCON_SWAP(ops->rotate, height, width);
1935 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
1936 vc->vc_font.height);
1937 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
1939 var.xres = virt_w * virt_fw;
1940 var.yres = virt_h * virt_fh;
1941 x_diff = info->var.xres - var.xres;
1942 y_diff = info->var.yres - var.yres;
1943 if (x_diff < 0 || x_diff > virt_fw ||
1944 y_diff < 0 || y_diff > virt_fh) {
1945 struct fb_videomode *mode;
1947 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
1948 mode = fb_find_best_mode(&var, &info->modelist);
1951 display_to_var(&var, p);
1952 fb_videomode_to_var(&var, mode);
1954 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
1957 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
1958 if (CON_IS_VISIBLE(vc)) {
1959 var.activate = FB_ACTIVATE_NOW |
1961 fb_set_var(info, &var);
1963 var_to_display(p, &info->var, info);
1964 ops->var = info->var;
1966 updatescrollmode(p, info, vc);
1970 static int fbcon_switch(struct vc_data *vc)
1972 struct fb_info *info, *old_info = NULL;
1973 struct fbcon_ops *ops;
1974 struct display *p = &fb_display[vc->vc_num];
1975 struct fb_var_screeninfo var;
1976 int i, prev_console;
1978 info = registered_fb[con2fb_map[vc->vc_num]];
1979 ops = info->fbcon_par;
1983 fbcon_set_origin(vc);
1984 softback_top = softback_curr = softback_in = softback_buf;
1986 fbcon_update_softback(vc);
1989 if (logo_shown >= 0) {
1990 struct vc_data *conp2 = vc_cons[logo_shown].d;
1992 if (conp2->vc_top == logo_lines
1993 && conp2->vc_bottom == conp2->vc_rows)
1995 logo_shown = FBCON_LOGO_CANSHOW;
1998 prev_console = ops->currcon;
1999 if (prev_console != -1)
2000 old_info = registered_fb[con2fb_map[prev_console]];
2002 * FIXME: If we have multiple fbdev's loaded, we need to
2003 * update all info->currcon. Perhaps, we can place this
2004 * in a centralized structure, but this might break some
2007 * info->currcon = vc->vc_num;
2009 for (i = 0; i < FB_MAX; i++) {
2010 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
2011 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
2013 o->currcon = vc->vc_num;
2016 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2017 display_to_var(&var, p);
2018 var.activate = FB_ACTIVATE_NOW;
2021 * make sure we don't unnecessarily trip the memcmp()
2024 info->var.activate = var.activate;
2025 var.yoffset = info->var.yoffset;
2026 var.xoffset = info->var.xoffset;
2027 var.vmode = info->var.vmode;
2028 fb_set_var(info, &var);
2029 ops->var = info->var;
2031 if (old_info != NULL && old_info != info) {
2032 if (info->fbops->fb_set_par)
2033 info->fbops->fb_set_par(info);
2034 fbcon_del_cursor_timer(old_info);
2035 fbcon_add_cursor_timer(info);
2038 set_blitting_type(vc, info, p);
2039 ops->cursor_reset = 1;
2041 if (ops->rotate_font && ops->rotate_font(info, vc, p)) {
2042 ops->rotate = FB_ROTATE_UR;
2043 set_blitting_type(vc, info, p);
2046 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
2047 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
2048 updatescrollmode(p, info, vc);
2050 switch (p->scrollmode) {
2051 case SCROLL_WRAP_MOVE:
2052 scrollback_phys_max = p->vrows - vc->vc_rows;
2054 case SCROLL_PAN_MOVE:
2055 case SCROLL_PAN_REDRAW:
2056 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2057 if (scrollback_phys_max < 0)
2058 scrollback_phys_max = 0;
2061 scrollback_phys_max = 0;
2066 scrollback_current = 0;
2067 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2068 ops->update_start(info);
2069 fbcon_set_palette(vc, color_table);
2070 fbcon_clear_margins(vc, 0);
2072 if (logo_shown == FBCON_LOGO_DRAW) {
2074 logo_shown = fg_console;
2075 /* This is protected above by initmem_freed */
2078 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2079 vc->vc_size_row * (vc->vc_bottom -
2086 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2090 unsigned short charmask = vc->vc_hi_font_mask ?
2092 unsigned short oldc;
2094 oldc = vc->vc_video_erase_char;
2095 vc->vc_video_erase_char &= charmask;
2096 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2097 vc->vc_video_erase_char = oldc;
2101 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2103 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2104 struct fbcon_ops *ops = info->fbcon_par;
2107 struct fb_var_screeninfo var = info->var;
2112 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2113 fb_set_var(info, &var);
2115 ops->var = info->var;
2119 if (!fbcon_is_inactive(vc, info)) {
2120 if (ops->blank_state != blank) {
2121 ops->blank_state = blank;
2122 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2123 ops->cursor_flash = (!blank);
2125 if (fb_blank(info, blank))
2126 fbcon_generic_blank(vc, info, blank);
2134 fbcon_add_cursor_timer(info);
2136 fbcon_del_cursor_timer(info);
2141 static void fbcon_free_font(struct display *p)
2143 if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
2144 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
2149 static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2151 u8 *fontdata = vc->vc_font.data;
2152 u8 *data = font->data;
2155 font->width = vc->vc_font.width;
2156 font->height = vc->vc_font.height;
2157 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2161 if (font->width <= 8) {
2162 j = vc->vc_font.height;
2163 for (i = 0; i < font->charcount; i++) {
2164 memcpy(data, fontdata, j);
2165 memset(data + j, 0, 32 - j);
2169 } else if (font->width <= 16) {
2170 j = vc->vc_font.height * 2;
2171 for (i = 0; i < font->charcount; i++) {
2172 memcpy(data, fontdata, j);
2173 memset(data + j, 0, 64 - j);
2177 } else if (font->width <= 24) {
2178 for (i = 0; i < font->charcount; i++) {
2179 for (j = 0; j < vc->vc_font.height; j++) {
2180 *data++ = fontdata[0];
2181 *data++ = fontdata[1];
2182 *data++ = fontdata[2];
2183 fontdata += sizeof(u32);
2185 memset(data, 0, 3 * (32 - j));
2186 data += 3 * (32 - j);
2189 j = vc->vc_font.height * 4;
2190 for (i = 0; i < font->charcount; i++) {
2191 memcpy(data, fontdata, j);
2192 memset(data + j, 0, 128 - j);
2200 static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2201 const u8 * data, int userfont)
2203 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2204 struct fbcon_ops *ops = info->fbcon_par;
2205 struct display *p = &fb_display[vc->vc_num];
2208 char *old_data = NULL;
2210 if (CON_IS_VISIBLE(vc) && softback_lines)
2211 fbcon_set_origin(vc);
2213 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2215 old_data = vc->vc_font.data;
2217 cnt = FNTCHARCNT(data);
2220 vc->vc_font.data = (void *)(p->fontdata = data);
2221 if ((p->userfont = userfont))
2223 vc->vc_font.width = w;
2224 vc->vc_font.height = h;
2225 if (vc->vc_hi_font_mask && cnt == 256) {
2226 vc->vc_hi_font_mask = 0;
2227 if (vc->vc_can_do_color) {
2228 vc->vc_complement_mask >>= 1;
2229 vc->vc_s_complement_mask >>= 1;
2232 /* ++Edmund: reorder the attribute bits */
2233 if (vc->vc_can_do_color) {
2234 unsigned short *cp =
2235 (unsigned short *) vc->vc_origin;
2236 int count = vc->vc_screenbuf_size / 2;
2238 for (; count > 0; count--, cp++) {
2240 scr_writew(((c & 0xfe00) >> 1) |
2243 c = vc->vc_video_erase_char;
2244 vc->vc_video_erase_char =
2245 ((c & 0xfe00) >> 1) | (c & 0xff);
2248 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2249 vc->vc_hi_font_mask = 0x100;
2250 if (vc->vc_can_do_color) {
2251 vc->vc_complement_mask <<= 1;
2252 vc->vc_s_complement_mask <<= 1;
2255 /* ++Edmund: reorder the attribute bits */
2257 unsigned short *cp =
2258 (unsigned short *) vc->vc_origin;
2259 int count = vc->vc_screenbuf_size / 2;
2261 for (; count > 0; count--, cp++) {
2262 unsigned short newc;
2264 if (vc->vc_can_do_color)
2266 ((c & 0xff00) << 1) | (c &
2270 scr_writew(newc, cp);
2272 c = vc->vc_video_erase_char;
2273 if (vc->vc_can_do_color) {
2274 vc->vc_video_erase_char =
2275 ((c & 0xff00) << 1) | (c & 0xff);
2278 vc->vc_video_erase_char = c & ~0x100;
2286 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2287 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2290 vc_resize(vc, cols, rows);
2291 if (CON_IS_VISIBLE(vc) && softback_buf)
2292 fbcon_update_softback(vc);
2293 } else if (CON_IS_VISIBLE(vc)
2294 && vc->vc_mode == KD_TEXT) {
2295 fbcon_clear_margins(vc, 0);
2299 if (old_data && (--REFCOUNT(old_data) == 0))
2300 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2304 static int fbcon_copy_font(struct vc_data *vc, int con)
2306 struct display *od = &fb_display[con];
2307 struct console_font *f = &vc->vc_font;
2309 if (od->fontdata == f->data)
2310 return 0; /* already the same font... */
2311 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2315 * User asked to set font; we are guaranteed that
2316 * a) width and height are in range 1..32
2317 * b) charcount does not exceed 512
2318 * but lets not assume that, since someone might someday want to use larger
2319 * fonts. And charcount of 512 is small for unicode support.
2321 * However, user space gives the font in 32 rows , regardless of
2322 * actual font height. So a new API is needed if support for larger fonts
2323 * is ever implemented.
2326 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2328 unsigned charcount = font->charcount;
2329 int w = font->width;
2330 int h = font->height;
2333 u8 *new_data, *data = font->data;
2334 int pitch = (font->width+7) >> 3;
2336 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2337 * If not this check should be changed to charcount < 256 */
2338 if (charcount != 256 && charcount != 512)
2341 size = h * pitch * charcount;
2343 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2348 new_data += FONT_EXTRA_WORDS * sizeof(int);
2349 FNTSIZE(new_data) = size;
2350 FNTCHARCNT(new_data) = charcount;
2351 REFCOUNT(new_data) = 0; /* usage counter */
2352 for (i=0; i< charcount; i++) {
2353 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2356 /* Since linux has a nice crc32 function use it for counting font
2358 csum = crc32(0, new_data, size);
2360 FNTSUM(new_data) = csum;
2361 /* Check if the same font is on some other console already */
2362 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2363 struct vc_data *tmp = vc_cons[i].d;
2365 if (fb_display[i].userfont &&
2366 fb_display[i].fontdata &&
2367 FNTSUM(fb_display[i].fontdata) == csum &&
2368 FNTSIZE(fb_display[i].fontdata) == size &&
2369 tmp->vc_font.width == w &&
2370 !memcmp(fb_display[i].fontdata, new_data, size)) {
2371 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2372 new_data = (u8 *)fb_display[i].fontdata;
2376 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2379 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2381 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2382 const struct font_desc *f;
2385 f = get_default_font(info->var.xres, info->var.yres);
2386 else if (!(f = find_font(name)))
2389 font->width = f->width;
2390 font->height = f->height;
2391 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2394 static u16 palette_red[16];
2395 static u16 palette_green[16];
2396 static u16 palette_blue[16];
2398 static struct fb_cmap palette_cmap = {
2399 0, 16, palette_red, palette_green, palette_blue, NULL
2402 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2404 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2408 if (fbcon_is_inactive(vc, info))
2411 if (!CON_IS_VISIBLE(vc))
2414 depth = fb_get_color_depth(&info->var, &info->fix);
2416 for (i = j = 0; i < 16; i++) {
2418 val = vc->vc_palette[j++];
2419 palette_red[k] = (val << 8) | val;
2420 val = vc->vc_palette[j++];
2421 palette_green[k] = (val << 8) | val;
2422 val = vc->vc_palette[j++];
2423 palette_blue[k] = (val << 8) | val;
2425 palette_cmap.len = 16;
2426 palette_cmap.start = 0;
2428 * If framebuffer is capable of less than 16 colors,
2429 * use default palette of fbcon.
2432 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2434 return fb_set_cmap(&palette_cmap, info);
2437 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2442 if (vc->vc_num != fg_console || !softback_lines)
2443 return (u16 *) (vc->vc_origin + offset);
2444 line = offset / vc->vc_size_row;
2445 if (line >= softback_lines)
2446 return (u16 *) (vc->vc_origin + offset -
2447 softback_lines * vc->vc_size_row);
2448 p = softback_curr + offset;
2449 if (p >= softback_end)
2450 p += softback_buf - softback_end;
2454 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2460 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2461 unsigned long offset = (pos - vc->vc_origin) / 2;
2463 x = offset % vc->vc_cols;
2464 y = offset / vc->vc_cols;
2465 if (vc->vc_num == fg_console)
2466 y += softback_lines;
2467 ret = pos + (vc->vc_cols - x) * 2;
2468 } else if (vc->vc_num == fg_console && softback_lines) {
2469 unsigned long offset = pos - softback_curr;
2471 if (pos < softback_curr)
2472 offset += softback_end - softback_buf;
2474 x = offset % vc->vc_cols;
2475 y = offset / vc->vc_cols;
2476 ret = pos + (vc->vc_cols - x) * 2;
2477 if (ret == softback_end)
2479 if (ret == softback_in)
2480 ret = vc->vc_origin;
2482 /* Should not happen */
2484 ret = vc->vc_origin;
2493 /* As we might be inside of softback, we may work with non-contiguous buffer,
2494 that's why we have to use a separate routine. */
2495 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2498 u16 a = scr_readw(p);
2499 if (!vc->vc_can_do_color)
2501 else if (vc->vc_hi_font_mask == 0x100)
2502 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2503 (((a) & 0x0e00) << 4);
2505 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2506 (((a) & 0x0700) << 4);
2508 if (p == (u16 *) softback_end)
2509 p = (u16 *) softback_buf;
2510 if (p == (u16 *) softback_in)
2511 p = (u16 *) vc->vc_origin;
2515 static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2517 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2518 struct fbcon_ops *ops = info->fbcon_par;
2519 struct display *p = &fb_display[fg_console];
2520 int offset, limit, scrollback_old;
2523 if (vc->vc_num != fg_console)
2525 if (vc->vc_mode != KD_TEXT || !lines)
2527 if (logo_shown >= 0) {
2528 struct vc_data *conp2 = vc_cons[logo_shown].d;
2530 if (conp2->vc_top == logo_lines
2531 && conp2->vc_bottom == conp2->vc_rows)
2533 if (logo_shown == vc->vc_num) {
2539 logo_lines * vc->vc_size_row;
2540 for (i = 0; i < logo_lines; i++) {
2541 if (p == softback_top)
2543 if (p == softback_buf)
2545 p -= vc->vc_size_row;
2546 q -= vc->vc_size_row;
2547 scr_memcpyw((u16 *) q, (u16 *) p,
2551 update_region(vc, vc->vc_origin,
2552 logo_lines * vc->vc_cols);
2554 logo_shown = FBCON_LOGO_CANSHOW;
2556 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2557 fbcon_redraw_softback(vc, p, lines);
2558 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2562 if (!scrollback_phys_max)
2565 scrollback_old = scrollback_current;
2566 scrollback_current -= lines;
2567 if (scrollback_current < 0)
2568 scrollback_current = 0;
2569 else if (scrollback_current > scrollback_max)
2570 scrollback_current = scrollback_max;
2571 if (scrollback_current == scrollback_old)
2574 if (fbcon_is_inactive(vc, info))
2577 fbcon_cursor(vc, CM_ERASE);
2579 offset = p->yscroll - scrollback_current;
2581 switch (p->scrollmode) {
2582 case SCROLL_WRAP_MOVE:
2583 info->var.vmode |= FB_VMODE_YWRAP;
2585 case SCROLL_PAN_MOVE:
2586 case SCROLL_PAN_REDRAW:
2587 limit -= vc->vc_rows;
2588 info->var.vmode &= ~FB_VMODE_YWRAP;
2593 else if (offset >= limit)
2596 ops->var.xoffset = 0;
2597 ops->var.yoffset = offset * vc->vc_font.height;
2598 ops->update_start(info);
2600 if (!scrollback_current)
2601 fbcon_cursor(vc, CM_DRAW);
2605 static int fbcon_set_origin(struct vc_data *vc)
2608 fbcon_scrolldelta(vc, softback_lines);
2612 static void fbcon_suspended(struct fb_info *info)
2614 struct vc_data *vc = NULL;
2615 struct fbcon_ops *ops = info->fbcon_par;
2617 if (!ops || ops->currcon < 0)
2619 vc = vc_cons[ops->currcon].d;
2621 /* Clear cursor, restore saved data */
2622 fbcon_cursor(vc, CM_ERASE);
2625 static void fbcon_resumed(struct fb_info *info)
2628 struct fbcon_ops *ops = info->fbcon_par;
2630 if (!ops || ops->currcon < 0)
2632 vc = vc_cons[ops->currcon].d;
2637 static void fbcon_modechanged(struct fb_info *info)
2639 struct fbcon_ops *ops = info->fbcon_par;
2644 if (!ops || ops->currcon < 0)
2646 vc = vc_cons[ops->currcon].d;
2647 if (vc->vc_mode != KD_TEXT ||
2648 registered_fb[con2fb_map[ops->currcon]] != info)
2651 p = &fb_display[vc->vc_num];
2652 set_blitting_type(vc, info, p);
2654 if (CON_IS_VISIBLE(vc)) {
2655 var_to_display(p, &info->var, info);
2656 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2657 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2658 cols /= vc->vc_font.width;
2659 rows /= vc->vc_font.height;
2660 vc_resize(vc, cols, rows);
2661 updatescrollmode(p, info, vc);
2663 scrollback_current = 0;
2664 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2665 ops->update_start(info);
2666 fbcon_set_palette(vc, color_table);
2669 fbcon_update_softback(vc);
2673 static void fbcon_set_all_vcs(struct fb_info *info)
2675 struct fbcon_ops *ops = info->fbcon_par;
2680 if (!ops || ops->currcon < 0)
2683 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2685 if (!vc || vc->vc_mode != KD_TEXT ||
2686 registered_fb[con2fb_map[i]] != info)
2689 p = &fb_display[vc->vc_num];
2690 set_blitting_type(vc, info, p);
2691 var_to_display(p, &info->var, info);
2692 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2693 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2694 cols /= vc->vc_font.width;
2695 rows /= vc->vc_font.height;
2696 vc_resize(vc, cols, rows);
2698 if (CON_IS_VISIBLE(vc)) {
2699 updatescrollmode(p, info, vc);
2701 scrollback_current = 0;
2702 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2703 ops->update_start(info);
2704 fbcon_set_palette(vc, color_table);
2707 fbcon_update_softback(vc);
2712 static int fbcon_mode_deleted(struct fb_info *info,
2713 struct fb_videomode *mode)
2715 struct fb_info *fb_info;
2717 int i, j, found = 0;
2719 /* before deletion, ensure that mode is not in use */
2720 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2724 fb_info = registered_fb[j];
2725 if (fb_info != info)
2730 if (fb_mode_is_equal(p->mode, mode)) {
2738 static int fbcon_fb_registered(int idx)
2742 if (info_idx == -1) {
2743 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2744 if (con2fb_map_boot[i] == idx) {
2750 ret = fbcon_takeover(1);
2752 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2753 if (con2fb_map_boot[i] == idx)
2754 set_con2fb_map(i, idx, 0);
2761 static void fbcon_fb_blanked(struct fb_info *info, int blank)
2763 struct fbcon_ops *ops = info->fbcon_par;
2766 if (!ops || ops->currcon < 0)
2769 vc = vc_cons[ops->currcon].d;
2770 if (vc->vc_mode != KD_TEXT ||
2771 registered_fb[con2fb_map[ops->currcon]] != info)
2774 if (CON_IS_VISIBLE(vc)) {
2778 do_unblank_screen(0);
2780 ops->blank_state = blank;
2783 static void fbcon_new_modelist(struct fb_info *info)
2787 struct fb_var_screeninfo var;
2788 struct fb_videomode *mode;
2790 for (i = 0; i < MAX_NR_CONSOLES; i++) {
2791 if (registered_fb[con2fb_map[i]] != info)
2793 if (!fb_display[i].mode)
2796 display_to_var(&var, &fb_display[i]);
2797 mode = fb_find_nearest_mode(fb_display[i].mode,
2799 fb_videomode_to_var(&var, mode);
2802 fbcon_set_disp(info, &var, vc);
2804 fbcon_preset_disp(info, &var, i);
2809 static int fbcon_event_notify(struct notifier_block *self,
2810 unsigned long action, void *data)
2812 struct fb_event *event = data;
2813 struct fb_info *info = event->info;
2814 struct fb_videomode *mode;
2815 struct fb_con2fbmap *con2fb;
2819 case FB_EVENT_SUSPEND:
2820 fbcon_suspended(info);
2822 case FB_EVENT_RESUME:
2823 fbcon_resumed(info);
2825 case FB_EVENT_MODE_CHANGE:
2826 fbcon_modechanged(info);
2828 case FB_EVENT_MODE_CHANGE_ALL:
2829 fbcon_set_all_vcs(info);
2831 case FB_EVENT_MODE_DELETE:
2833 ret = fbcon_mode_deleted(info, mode);
2835 case FB_EVENT_FB_REGISTERED:
2836 ret = fbcon_fb_registered(info->node);
2838 case FB_EVENT_SET_CONSOLE_MAP:
2839 con2fb = event->data;
2840 ret = set_con2fb_map(con2fb->console - 1,
2841 con2fb->framebuffer, 1);
2843 case FB_EVENT_GET_CONSOLE_MAP:
2844 con2fb = event->data;
2845 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
2847 case FB_EVENT_BLANK:
2848 fbcon_fb_blanked(info, *(int *)event->data);
2850 case FB_EVENT_NEW_MODELIST:
2851 fbcon_new_modelist(info);
2859 * The console `switch' structure for the frame buffer based console
2862 static const struct consw fb_con = {
2863 .owner = THIS_MODULE,
2864 .con_startup = fbcon_startup,
2865 .con_init = fbcon_init,
2866 .con_deinit = fbcon_deinit,
2867 .con_clear = fbcon_clear,
2868 .con_putc = fbcon_putc,
2869 .con_putcs = fbcon_putcs,
2870 .con_cursor = fbcon_cursor,
2871 .con_scroll = fbcon_scroll,
2872 .con_bmove = fbcon_bmove,
2873 .con_switch = fbcon_switch,
2874 .con_blank = fbcon_blank,
2875 .con_font_set = fbcon_set_font,
2876 .con_font_get = fbcon_get_font,
2877 .con_font_default = fbcon_set_def_font,
2878 .con_font_copy = fbcon_copy_font,
2879 .con_set_palette = fbcon_set_palette,
2880 .con_scrolldelta = fbcon_scrolldelta,
2881 .con_set_origin = fbcon_set_origin,
2882 .con_invert_region = fbcon_invert_region,
2883 .con_screen_pos = fbcon_screen_pos,
2884 .con_getxy = fbcon_getxy,
2885 .con_resize = fbcon_resize,
2888 static struct notifier_block fbcon_event_notifier = {
2889 .notifier_call = fbcon_event_notify,
2892 static int __init fb_console_init(void)
2896 acquire_console_sem();
2897 fb_register_client(&fbcon_event_notifier);
2898 release_console_sem();
2900 for (i = 0; i < MAX_NR_CONSOLES; i++)
2903 if (num_registered_fb) {
2904 for (i = 0; i < FB_MAX; i++) {
2905 if (registered_fb[i] != NULL) {
2916 module_init(fb_console_init);
2920 static void __exit fb_console_exit(void)
2922 acquire_console_sem();
2923 fb_unregister_client(&fbcon_event_notifier);
2924 release_console_sem();
2925 give_up_console(&fb_con);
2928 module_exit(fb_console_exit);
2932 MODULE_LICENSE("GPL");