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3373 lines
82 KiB
3373 lines
82 KiB
/* |
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* linux/drivers/video/fbcon.c -- Low level frame buffer based console driver |
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* |
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* Copyright (C) 1995 Geert Uytterhoeven |
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* |
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* |
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* This file is based on the original Amiga console driver (amicon.c): |
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* |
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* Copyright (C) 1993 Hamish Macdonald |
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* Greg Harp |
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* Copyright (C) 1994 David Carter [[email protected]] |
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* |
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* with work by William Rucklidge ([email protected]) |
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* Geert Uytterhoeven |
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* Jes Sorensen ([email protected]) |
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* Martin Apel |
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* |
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* and on the original Atari console driver (atacon.c): |
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* |
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* Copyright (C) 1993 Bjoern Brauel |
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* Roman Hodek |
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* |
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* with work by Guenther Kelleter |
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* Martin Schaller |
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* Andreas Schwab |
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* |
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* Hardware cursor support added by Emmanuel Marty ([email protected]) |
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* Smart redraw scrolling, arbitrary font width support, 512char font support |
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* and software scrollback added by |
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* Jakub Jelinek ([email protected]) |
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* |
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* Random hacking by Martin Mares <[email protected]> |
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* |
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* 2001 - Documented with DocBook |
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* - Brad Douglas <[email protected]> |
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* |
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* The low level operations for the various display memory organizations are |
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* now in separate source files. |
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* |
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* Currently the following organizations are supported: |
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* |
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* o afb Amiga bitplanes |
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* o cfb{2,4,8,16,24,32} Packed pixels |
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* o ilbm Amiga interleaved bitplanes |
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* o iplan2p[248] Atari interleaved bitplanes |
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* o mfb Monochrome |
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* o vga VGA characters/attributes |
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* |
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* To do: |
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* |
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* - Implement 16 plane mode (iplan2p16) |
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* |
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* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file COPYING in the main directory of this archive for |
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* more details. |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/fs.h> |
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#include <linux/kernel.h> |
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#include <linux/delay.h> /* MSch: for IRQ probe */ |
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#include <linux/console.h> |
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#include <linux/string.h> |
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#include <linux/kd.h> |
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#include <linux/slab.h> |
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#include <linux/fb.h> |
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#include <linux/fbcon.h> |
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#include <linux/vt_kern.h> |
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#include <linux/selection.h> |
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#include <linux/font.h> |
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#include <linux/smp.h> |
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#include <linux/init.h> |
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#include <linux/interrupt.h> |
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#include <linux/crc32.h> /* For counting font checksums */ |
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#include <linux/uaccess.h> |
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#include <asm/fb.h> |
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#include <asm/irq.h> |
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|
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#include "fbcon.h" |
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|
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/* |
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* FIXME: Locking |
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* |
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* - fbcon state itself is protected by the console_lock, and the code does a |
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* pretty good job at making sure that lock is held everywhere it's needed. |
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* |
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* - access to the registered_fb array is entirely unprotected. This should use |
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* proper object lifetime handling, i.e. get/put_fb_info. This also means |
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* switching from indices to proper pointers for fb_info everywhere. |
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* |
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* - fbcon doesn't bother with fb_lock/unlock at all. This is buggy, since it |
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* means concurrent access to the same fbdev from both fbcon and userspace |
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* will blow up. To fix this all fbcon calls from fbmem.c need to be moved out |
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* of fb_lock/unlock protected sections, since otherwise we'll recurse and |
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* deadlock eventually. Aside: Due to these deadlock issues the fbdev code in |
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* fbmem.c cannot use locking asserts, and there's lots of callers which get |
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* the rules wrong, e.g. fbsysfs.c entirely missed fb_lock/unlock calls too. |
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*/ |
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|
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enum { |
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FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */ |
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FBCON_LOGO_DRAW = -2, /* draw the logo to a console */ |
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FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */ |
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}; |
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|
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static struct fbcon_display fb_display[MAX_NR_CONSOLES]; |
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|
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static signed char con2fb_map[MAX_NR_CONSOLES]; |
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static signed char con2fb_map_boot[MAX_NR_CONSOLES]; |
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|
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static int logo_lines; |
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/* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO |
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enums. */ |
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static int logo_shown = FBCON_LOGO_CANSHOW; |
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/* console mappings */ |
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static int first_fb_vc; |
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static int last_fb_vc = MAX_NR_CONSOLES - 1; |
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static int fbcon_is_default = 1; |
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static int primary_device = -1; |
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static int fbcon_has_console_bind; |
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|
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#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY |
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static int map_override; |
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|
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static inline void fbcon_map_override(void) |
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{ |
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map_override = 1; |
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} |
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#else |
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static inline void fbcon_map_override(void) |
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{ |
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} |
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#endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */ |
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|
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#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER |
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static bool deferred_takeover = true; |
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#else |
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#define deferred_takeover false |
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#endif |
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|
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/* font data */ |
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static char fontname[40]; |
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|
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/* current fb_info */ |
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static int info_idx = -1; |
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|
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/* console rotation */ |
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static int initial_rotation = -1; |
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static int fbcon_has_sysfs; |
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static int margin_color; |
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|
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static const struct consw fb_con; |
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|
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#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) |
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static int fbcon_cursor_noblink; |
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|
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#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1) |
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|
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/* |
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* Interface used by the world |
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*/ |
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|
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static const char *fbcon_startup(void); |
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static void fbcon_init(struct vc_data *vc, int init); |
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static void fbcon_deinit(struct vc_data *vc); |
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static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, |
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int width); |
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static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); |
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static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, |
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int count, int ypos, int xpos); |
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static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); |
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static void fbcon_cursor(struct vc_data *vc, int mode); |
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static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, |
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int height, int width); |
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static int fbcon_switch(struct vc_data *vc); |
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static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); |
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static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table); |
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|
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/* |
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* Internal routines |
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*/ |
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static __inline__ void ywrap_up(struct vc_data *vc, int count); |
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static __inline__ void ywrap_down(struct vc_data *vc, int count); |
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static __inline__ void ypan_up(struct vc_data *vc, int count); |
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static __inline__ void ypan_down(struct vc_data *vc, int count); |
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static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, |
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int dy, int dx, int height, int width, u_int y_break); |
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static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, |
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int unit); |
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static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, |
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int line, int count, int dy); |
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static void fbcon_modechanged(struct fb_info *info); |
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static void fbcon_set_all_vcs(struct fb_info *info); |
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static void fbcon_start(void); |
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static void fbcon_exit(void); |
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static struct device *fbcon_device; |
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|
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#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION |
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static inline void fbcon_set_rotation(struct fb_info *info) |
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{ |
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struct fbcon_ops *ops = info->fbcon_par; |
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|
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if (!(info->flags & FBINFO_MISC_TILEBLITTING) && |
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ops->p->con_rotate < 4) |
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ops->rotate = ops->p->con_rotate; |
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else |
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ops->rotate = 0; |
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} |
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|
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static void fbcon_rotate(struct fb_info *info, u32 rotate) |
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{ |
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struct fbcon_ops *ops= info->fbcon_par; |
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struct fb_info *fb_info; |
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|
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if (!ops || ops->currcon == -1) |
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return; |
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|
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fb_info = registered_fb[con2fb_map[ops->currcon]]; |
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|
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if (info == fb_info) { |
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struct fbcon_display *p = &fb_display[ops->currcon]; |
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if (rotate < 4) |
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p->con_rotate = rotate; |
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else |
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p->con_rotate = 0; |
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|
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fbcon_modechanged(info); |
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} |
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} |
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|
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static void fbcon_rotate_all(struct fb_info *info, u32 rotate) |
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{ |
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struct fbcon_ops *ops = info->fbcon_par; |
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struct vc_data *vc; |
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struct fbcon_display *p; |
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int i; |
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|
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if (!ops || ops->currcon < 0 || rotate > 3) |
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return; |
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for (i = first_fb_vc; i <= last_fb_vc; i++) { |
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vc = vc_cons[i].d; |
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if (!vc || vc->vc_mode != KD_TEXT || |
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registered_fb[con2fb_map[i]] != info) |
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continue; |
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p = &fb_display[vc->vc_num]; |
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p->con_rotate = rotate; |
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} |
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fbcon_set_all_vcs(info); |
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} |
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#else |
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static inline void fbcon_set_rotation(struct fb_info *info) |
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{ |
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struct fbcon_ops *ops = info->fbcon_par; |
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ops->rotate = FB_ROTATE_UR; |
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} |
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static void fbcon_rotate(struct fb_info *info, u32 rotate) |
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{ |
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return; |
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} |
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|
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static void fbcon_rotate_all(struct fb_info *info, u32 rotate) |
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{ |
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return; |
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} |
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#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ |
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|
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static int fbcon_get_rotate(struct fb_info *info) |
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{ |
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struct fbcon_ops *ops = info->fbcon_par; |
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return (ops) ? ops->rotate : 0; |
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} |
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static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) |
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{ |
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struct fbcon_ops *ops = info->fbcon_par; |
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return (info->state != FBINFO_STATE_RUNNING || |
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vc->vc_mode != KD_TEXT || ops->graphics); |
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} |
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static int get_color(struct vc_data *vc, struct fb_info *info, |
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u16 c, int is_fg) |
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{ |
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int depth = fb_get_color_depth(&info->var, &info->fix); |
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int color = 0; |
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|
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if (console_blanked) { |
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unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
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c = vc->vc_video_erase_char & charmask; |
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} |
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|
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if (depth != 1) |
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color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) |
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: attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); |
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|
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switch (depth) { |
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case 1: |
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{ |
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int col = mono_col(info); |
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/* 0 or 1 */ |
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int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; |
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int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; |
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if (console_blanked) |
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fg = bg; |
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color = (is_fg) ? fg : bg; |
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break; |
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} |
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case 2: |
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/* |
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* Scale down 16-colors to 4 colors. Default 4-color palette |
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* is grayscale. However, simply dividing the values by 4 |
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* will not work, as colors 1, 2 and 3 will be scaled-down |
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* to zero rendering them invisible. So empirically convert |
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* colors to a sane 4-level grayscale. |
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*/ |
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switch (color) { |
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case 0: |
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color = 0; /* black */ |
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break; |
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case 1 ... 6: |
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color = 2; /* white */ |
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break; |
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case 7 ... 8: |
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color = 1; /* gray */ |
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break; |
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default: |
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color = 3; /* intense white */ |
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break; |
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} |
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break; |
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case 3: |
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/* |
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* Last 8 entries of default 16-color palette is a more intense |
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* version of the first 8 (i.e., same chrominance, different |
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* luminance). |
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*/ |
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color &= 7; |
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break; |
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} |
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return color; |
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} |
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|
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static void fb_flashcursor(struct work_struct *work) |
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{ |
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struct fb_info *info = container_of(work, struct fb_info, queue); |
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struct fbcon_ops *ops = info->fbcon_par; |
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struct vc_data *vc = NULL; |
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int c; |
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int mode; |
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int ret; |
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|
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/* FIXME: we should sort out the unbind locking instead */ |
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/* instead we just fail to flash the cursor if we can't get |
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* the lock instead of blocking fbcon deinit */ |
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ret = console_trylock(); |
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if (ret == 0) |
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return; |
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|
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if (ops && ops->currcon != -1) |
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vc = vc_cons[ops->currcon].d; |
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|
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if (!vc || !con_is_visible(vc) || |
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registered_fb[con2fb_map[vc->vc_num]] != info || |
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vc->vc_deccm != 1) { |
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console_unlock(); |
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return; |
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} |
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|
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c = scr_readw((u16 *) vc->vc_pos); |
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mode = (!ops->cursor_flash || ops->cursor_state.enable) ? |
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CM_ERASE : CM_DRAW; |
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ops->cursor(vc, info, mode, get_color(vc, info, c, 1), |
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get_color(vc, info, c, 0)); |
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console_unlock(); |
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} |
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|
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static void cursor_timer_handler(struct timer_list *t) |
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{ |
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struct fbcon_ops *ops = from_timer(ops, t, cursor_timer); |
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struct fb_info *info = ops->info; |
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|
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queue_work(system_power_efficient_wq, &info->queue); |
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mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); |
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} |
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|
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static void fbcon_add_cursor_timer(struct fb_info *info) |
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{ |
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struct fbcon_ops *ops = info->fbcon_par; |
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|
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if ((!info->queue.func || info->queue.func == fb_flashcursor) && |
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!(ops->flags & FBCON_FLAGS_CURSOR_TIMER) && |
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!fbcon_cursor_noblink) { |
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if (!info->queue.func) |
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INIT_WORK(&info->queue, fb_flashcursor); |
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|
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timer_setup(&ops->cursor_timer, cursor_timer_handler, 0); |
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mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); |
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ops->flags |= FBCON_FLAGS_CURSOR_TIMER; |
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} |
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} |
|
|
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static void fbcon_del_cursor_timer(struct fb_info *info) |
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{ |
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struct fbcon_ops *ops = info->fbcon_par; |
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|
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if (info->queue.func == fb_flashcursor && |
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ops->flags & FBCON_FLAGS_CURSOR_TIMER) { |
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del_timer_sync(&ops->cursor_timer); |
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ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; |
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} |
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} |
|
|
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#ifndef MODULE |
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static int __init fb_console_setup(char *this_opt) |
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{ |
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char *options; |
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int i, j; |
|
|
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if (!this_opt || !*this_opt) |
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return 1; |
|
|
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while ((options = strsep(&this_opt, ",")) != NULL) { |
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if (!strncmp(options, "font:", 5)) { |
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strlcpy(fontname, options + 5, sizeof(fontname)); |
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continue; |
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} |
|
|
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if (!strncmp(options, "scrollback:", 11)) { |
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pr_warn("Ignoring scrollback size option\n"); |
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continue; |
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} |
|
|
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if (!strncmp(options, "map:", 4)) { |
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options += 4; |
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if (*options) { |
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for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { |
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if (!options[j]) |
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j = 0; |
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con2fb_map_boot[i] = |
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(options[j++]-'0') % FB_MAX; |
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} |
|
|
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fbcon_map_override(); |
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} |
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continue; |
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} |
|
|
|
if (!strncmp(options, "vc:", 3)) { |
|
options += 3; |
|
if (*options) |
|
first_fb_vc = simple_strtoul(options, &options, 10) - 1; |
|
if (first_fb_vc < 0) |
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first_fb_vc = 0; |
|
if (*options++ == '-') |
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last_fb_vc = simple_strtoul(options, &options, 10) - 1; |
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fbcon_is_default = 0; |
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continue; |
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} |
|
|
|
if (!strncmp(options, "rotate:", 7)) { |
|
options += 7; |
|
if (*options) |
|
initial_rotation = simple_strtoul(options, &options, 0); |
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if (initial_rotation > 3) |
|
initial_rotation = 0; |
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continue; |
|
} |
|
|
|
if (!strncmp(options, "margin:", 7)) { |
|
options += 7; |
|
if (*options) |
|
margin_color = simple_strtoul(options, &options, 0); |
|
continue; |
|
} |
|
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER |
|
if (!strcmp(options, "nodefer")) { |
|
deferred_takeover = false; |
|
continue; |
|
} |
|
#endif |
|
|
|
if (!strncmp(options, "logo-pos:", 9)) { |
|
options += 9; |
|
if (!strcmp(options, "center")) |
|
fb_center_logo = true; |
|
continue; |
|
} |
|
|
|
if (!strncmp(options, "logo-count:", 11)) { |
|
options += 11; |
|
if (*options) |
|
fb_logo_count = simple_strtol(options, &options, 0); |
|
continue; |
|
} |
|
} |
|
return 1; |
|
} |
|
|
|
__setup("fbcon=", fb_console_setup); |
|
#endif |
|
|
|
static int search_fb_in_map(int idx) |
|
{ |
|
int i, retval = 0; |
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (con2fb_map[i] == idx) |
|
retval = 1; |
|
} |
|
return retval; |
|
} |
|
|
|
static int search_for_mapped_con(void) |
|
{ |
|
int i, retval = 0; |
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (con2fb_map[i] != -1) |
|
retval = 1; |
|
} |
|
return retval; |
|
} |
|
|
|
static int do_fbcon_takeover(int show_logo) |
|
{ |
|
int err, i; |
|
|
|
if (!num_registered_fb) |
|
return -ENODEV; |
|
|
|
if (!show_logo) |
|
logo_shown = FBCON_LOGO_DONTSHOW; |
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) |
|
con2fb_map[i] = info_idx; |
|
|
|
err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, |
|
fbcon_is_default); |
|
|
|
if (err) { |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) |
|
con2fb_map[i] = -1; |
|
info_idx = -1; |
|
} else { |
|
fbcon_has_console_bind = 1; |
|
} |
|
|
|
return err; |
|
} |
|
|
|
#ifdef MODULE |
|
static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, |
|
int cols, int rows, int new_cols, int new_rows) |
|
{ |
|
logo_shown = FBCON_LOGO_DONTSHOW; |
|
} |
|
#else |
|
static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, |
|
int cols, int rows, int new_cols, int new_rows) |
|
{ |
|
/* Need to make room for the logo */ |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
int cnt, erase = vc->vc_video_erase_char, step; |
|
unsigned short *save = NULL, *r, *q; |
|
int logo_height; |
|
|
|
if (info->fbops->owner) { |
|
logo_shown = FBCON_LOGO_DONTSHOW; |
|
return; |
|
} |
|
|
|
/* |
|
* remove underline attribute from erase character |
|
* if black and white framebuffer. |
|
*/ |
|
if (fb_get_color_depth(&info->var, &info->fix) == 1) |
|
erase &= ~0x400; |
|
logo_height = fb_prepare_logo(info, ops->rotate); |
|
logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); |
|
q = (unsigned short *) (vc->vc_origin + |
|
vc->vc_size_row * rows); |
|
step = logo_lines * cols; |
|
for (r = q - logo_lines * cols; r < q; r++) |
|
if (scr_readw(r) != vc->vc_video_erase_char) |
|
break; |
|
if (r != q && new_rows >= rows + logo_lines) { |
|
save = kmalloc(array3_size(logo_lines, new_cols, 2), |
|
GFP_KERNEL); |
|
if (save) { |
|
int i = cols < new_cols ? cols : new_cols; |
|
scr_memsetw(save, erase, array3_size(logo_lines, new_cols, 2)); |
|
r = q - step; |
|
for (cnt = 0; cnt < logo_lines; cnt++, r += i) |
|
scr_memcpyw(save + cnt * new_cols, r, 2 * i); |
|
r = q; |
|
} |
|
} |
|
if (r == q) { |
|
/* We can scroll screen down */ |
|
r = q - step - cols; |
|
for (cnt = rows - logo_lines; cnt > 0; cnt--) { |
|
scr_memcpyw(r + step, r, vc->vc_size_row); |
|
r -= cols; |
|
} |
|
if (!save) { |
|
int lines; |
|
if (vc->state.y + logo_lines >= rows) |
|
lines = rows - vc->state.y - 1; |
|
else |
|
lines = logo_lines; |
|
vc->state.y += lines; |
|
vc->vc_pos += lines * vc->vc_size_row; |
|
} |
|
} |
|
scr_memsetw((unsigned short *) vc->vc_origin, |
|
erase, |
|
vc->vc_size_row * logo_lines); |
|
|
|
if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { |
|
fbcon_clear_margins(vc, 0); |
|
update_screen(vc); |
|
} |
|
|
|
if (save) { |
|
q = (unsigned short *) (vc->vc_origin + |
|
vc->vc_size_row * |
|
rows); |
|
scr_memcpyw(q, save, array3_size(logo_lines, new_cols, 2)); |
|
vc->state.y += logo_lines; |
|
vc->vc_pos += logo_lines * vc->vc_size_row; |
|
kfree(save); |
|
} |
|
|
|
if (logo_shown == FBCON_LOGO_DONTSHOW) |
|
return; |
|
|
|
if (logo_lines > vc->vc_bottom) { |
|
logo_shown = FBCON_LOGO_CANSHOW; |
|
printk(KERN_INFO |
|
"fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); |
|
} else { |
|
logo_shown = FBCON_LOGO_DRAW; |
|
vc->vc_top = logo_lines; |
|
} |
|
} |
|
#endif /* MODULE */ |
|
|
|
#ifdef CONFIG_FB_TILEBLITTING |
|
static void set_blitting_type(struct vc_data *vc, struct fb_info *info) |
|
{ |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
ops->p = &fb_display[vc->vc_num]; |
|
|
|
if ((info->flags & FBINFO_MISC_TILEBLITTING)) |
|
fbcon_set_tileops(vc, info); |
|
else { |
|
fbcon_set_rotation(info); |
|
fbcon_set_bitops(ops); |
|
} |
|
} |
|
|
|
static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) |
|
{ |
|
int err = 0; |
|
|
|
if (info->flags & FBINFO_MISC_TILEBLITTING && |
|
info->tileops->fb_get_tilemax(info) < charcount) |
|
err = 1; |
|
|
|
return err; |
|
} |
|
#else |
|
static void set_blitting_type(struct vc_data *vc, struct fb_info *info) |
|
{ |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
info->flags &= ~FBINFO_MISC_TILEBLITTING; |
|
ops->p = &fb_display[vc->vc_num]; |
|
fbcon_set_rotation(info); |
|
fbcon_set_bitops(ops); |
|
} |
|
|
|
static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) |
|
{ |
|
return 0; |
|
} |
|
|
|
#endif /* CONFIG_MISC_TILEBLITTING */ |
|
|
|
|
|
static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, |
|
int unit, int oldidx) |
|
{ |
|
struct fbcon_ops *ops = NULL; |
|
int err = 0; |
|
|
|
if (!try_module_get(info->fbops->owner)) |
|
err = -ENODEV; |
|
|
|
if (!err && info->fbops->fb_open && |
|
info->fbops->fb_open(info, 0)) |
|
err = -ENODEV; |
|
|
|
if (!err) { |
|
ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); |
|
if (!ops) |
|
err = -ENOMEM; |
|
} |
|
|
|
if (!err) { |
|
ops->cur_blink_jiffies = HZ / 5; |
|
ops->info = info; |
|
info->fbcon_par = ops; |
|
|
|
if (vc) |
|
set_blitting_type(vc, info); |
|
} |
|
|
|
if (err) { |
|
con2fb_map[unit] = oldidx; |
|
module_put(info->fbops->owner); |
|
} |
|
|
|
return err; |
|
} |
|
|
|
static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, |
|
struct fb_info *newinfo, int unit, |
|
int oldidx, int found) |
|
{ |
|
struct fbcon_ops *ops = oldinfo->fbcon_par; |
|
int err = 0, ret; |
|
|
|
if (oldinfo->fbops->fb_release && |
|
oldinfo->fbops->fb_release(oldinfo, 0)) { |
|
con2fb_map[unit] = oldidx; |
|
if (!found && newinfo->fbops->fb_release) |
|
newinfo->fbops->fb_release(newinfo, 0); |
|
if (!found) |
|
module_put(newinfo->fbops->owner); |
|
err = -ENODEV; |
|
} |
|
|
|
if (!err) { |
|
fbcon_del_cursor_timer(oldinfo); |
|
kfree(ops->cursor_state.mask); |
|
kfree(ops->cursor_data); |
|
kfree(ops->cursor_src); |
|
kfree(ops->fontbuffer); |
|
kfree(oldinfo->fbcon_par); |
|
oldinfo->fbcon_par = NULL; |
|
module_put(oldinfo->fbops->owner); |
|
/* |
|
If oldinfo and newinfo are driving the same hardware, |
|
the fb_release() method of oldinfo may attempt to |
|
restore the hardware state. This will leave the |
|
newinfo in an undefined state. Thus, a call to |
|
fb_set_par() may be needed for the newinfo. |
|
*/ |
|
if (newinfo && newinfo->fbops->fb_set_par) { |
|
ret = newinfo->fbops->fb_set_par(newinfo); |
|
|
|
if (ret) |
|
printk(KERN_ERR "con2fb_release_oldinfo: " |
|
"detected unhandled fb_set_par error, " |
|
"error code %d\n", ret); |
|
} |
|
} |
|
|
|
return err; |
|
} |
|
|
|
static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, |
|
int unit, int show_logo) |
|
{ |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
int ret; |
|
|
|
ops->currcon = fg_console; |
|
|
|
if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { |
|
ret = info->fbops->fb_set_par(info); |
|
|
|
if (ret) |
|
printk(KERN_ERR "con2fb_init_display: detected " |
|
"unhandled fb_set_par error, " |
|
"error code %d\n", ret); |
|
} |
|
|
|
ops->flags |= FBCON_FLAGS_INIT; |
|
ops->graphics = 0; |
|
fbcon_set_disp(info, &info->var, unit); |
|
|
|
if (show_logo) { |
|
struct vc_data *fg_vc = vc_cons[fg_console].d; |
|
struct fb_info *fg_info = |
|
registered_fb[con2fb_map[fg_console]]; |
|
|
|
fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, |
|
fg_vc->vc_rows, fg_vc->vc_cols, |
|
fg_vc->vc_rows); |
|
} |
|
|
|
update_screen(vc_cons[fg_console].d); |
|
} |
|
|
|
/** |
|
* set_con2fb_map - map console to frame buffer device |
|
* @unit: virtual console number to map |
|
* @newidx: frame buffer index to map virtual console to |
|
* @user: user request |
|
* |
|
* Maps a virtual console @unit to a frame buffer device |
|
* @newidx. |
|
* |
|
* This should be called with the console lock held. |
|
*/ |
|
static int set_con2fb_map(int unit, int newidx, int user) |
|
{ |
|
struct vc_data *vc = vc_cons[unit].d; |
|
int oldidx = con2fb_map[unit]; |
|
struct fb_info *info = registered_fb[newidx]; |
|
struct fb_info *oldinfo = NULL; |
|
int found, err = 0; |
|
|
|
WARN_CONSOLE_UNLOCKED(); |
|
|
|
if (oldidx == newidx) |
|
return 0; |
|
|
|
if (!info) |
|
return -EINVAL; |
|
|
|
if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { |
|
info_idx = newidx; |
|
return do_fbcon_takeover(0); |
|
} |
|
|
|
if (oldidx != -1) |
|
oldinfo = registered_fb[oldidx]; |
|
|
|
found = search_fb_in_map(newidx); |
|
|
|
con2fb_map[unit] = newidx; |
|
if (!err && !found) |
|
err = con2fb_acquire_newinfo(vc, info, unit, oldidx); |
|
|
|
/* |
|
* If old fb is not mapped to any of the consoles, |
|
* fbcon should release it. |
|
*/ |
|
if (!err && oldinfo && !search_fb_in_map(oldidx)) |
|
err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, |
|
found); |
|
|
|
if (!err) { |
|
int show_logo = (fg_console == 0 && !user && |
|
logo_shown != FBCON_LOGO_DONTSHOW); |
|
|
|
if (!found) |
|
fbcon_add_cursor_timer(info); |
|
con2fb_map_boot[unit] = newidx; |
|
con2fb_init_display(vc, info, unit, show_logo); |
|
} |
|
|
|
if (!search_fb_in_map(info_idx)) |
|
info_idx = newidx; |
|
|
|
return err; |
|
} |
|
|
|
/* |
|
* Low Level Operations |
|
*/ |
|
/* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ |
|
static int var_to_display(struct fbcon_display *disp, |
|
struct fb_var_screeninfo *var, |
|
struct fb_info *info) |
|
{ |
|
disp->xres_virtual = var->xres_virtual; |
|
disp->yres_virtual = var->yres_virtual; |
|
disp->bits_per_pixel = var->bits_per_pixel; |
|
disp->grayscale = var->grayscale; |
|
disp->nonstd = var->nonstd; |
|
disp->accel_flags = var->accel_flags; |
|
disp->height = var->height; |
|
disp->width = var->width; |
|
disp->red = var->red; |
|
disp->green = var->green; |
|
disp->blue = var->blue; |
|
disp->transp = var->transp; |
|
disp->rotate = var->rotate; |
|
disp->mode = fb_match_mode(var, &info->modelist); |
|
if (disp->mode == NULL) |
|
/* This should not happen */ |
|
return -EINVAL; |
|
return 0; |
|
} |
|
|
|
static void display_to_var(struct fb_var_screeninfo *var, |
|
struct fbcon_display *disp) |
|
{ |
|
fb_videomode_to_var(var, disp->mode); |
|
var->xres_virtual = disp->xres_virtual; |
|
var->yres_virtual = disp->yres_virtual; |
|
var->bits_per_pixel = disp->bits_per_pixel; |
|
var->grayscale = disp->grayscale; |
|
var->nonstd = disp->nonstd; |
|
var->accel_flags = disp->accel_flags; |
|
var->height = disp->height; |
|
var->width = disp->width; |
|
var->red = disp->red; |
|
var->green = disp->green; |
|
var->blue = disp->blue; |
|
var->transp = disp->transp; |
|
var->rotate = disp->rotate; |
|
} |
|
|
|
static const char *fbcon_startup(void) |
|
{ |
|
const char *display_desc = "frame buffer device"; |
|
struct fbcon_display *p = &fb_display[fg_console]; |
|
struct vc_data *vc = vc_cons[fg_console].d; |
|
const struct font_desc *font = NULL; |
|
struct module *owner; |
|
struct fb_info *info = NULL; |
|
struct fbcon_ops *ops; |
|
int rows, cols; |
|
|
|
/* |
|
* If num_registered_fb is zero, this is a call for the dummy part. |
|
* The frame buffer devices weren't initialized yet. |
|
*/ |
|
if (!num_registered_fb || info_idx == -1) |
|
return display_desc; |
|
/* |
|
* Instead of blindly using registered_fb[0], we use info_idx, set by |
|
* fb_console_init(); |
|
*/ |
|
info = registered_fb[info_idx]; |
|
if (!info) |
|
return NULL; |
|
|
|
owner = info->fbops->owner; |
|
if (!try_module_get(owner)) |
|
return NULL; |
|
if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { |
|
module_put(owner); |
|
return NULL; |
|
} |
|
|
|
ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); |
|
if (!ops) { |
|
module_put(owner); |
|
return NULL; |
|
} |
|
|
|
ops->currcon = -1; |
|
ops->graphics = 1; |
|
ops->cur_rotate = -1; |
|
ops->cur_blink_jiffies = HZ / 5; |
|
ops->info = info; |
|
info->fbcon_par = ops; |
|
|
|
p->con_rotate = initial_rotation; |
|
if (p->con_rotate == -1) |
|
p->con_rotate = info->fbcon_rotate_hint; |
|
if (p->con_rotate == -1) |
|
p->con_rotate = FB_ROTATE_UR; |
|
|
|
set_blitting_type(vc, info); |
|
|
|
/* Setup default font */ |
|
if (!p->fontdata && !vc->vc_font.data) { |
|
if (!fontname[0] || !(font = find_font(fontname))) |
|
font = get_default_font(info->var.xres, |
|
info->var.yres, |
|
info->pixmap.blit_x, |
|
info->pixmap.blit_y); |
|
vc->vc_font.width = font->width; |
|
vc->vc_font.height = font->height; |
|
vc->vc_font.data = (void *)(p->fontdata = font->data); |
|
vc->vc_font.charcount = font->charcount; |
|
} else { |
|
p->fontdata = vc->vc_font.data; |
|
} |
|
|
|
cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
|
rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); |
|
cols /= vc->vc_font.width; |
|
rows /= vc->vc_font.height; |
|
vc_resize(vc, cols, rows); |
|
|
|
pr_debug("mode: %s\n", info->fix.id); |
|
pr_debug("visual: %d\n", info->fix.visual); |
|
pr_debug("res: %dx%d-%d\n", info->var.xres, |
|
info->var.yres, |
|
info->var.bits_per_pixel); |
|
|
|
fbcon_add_cursor_timer(info); |
|
return display_desc; |
|
} |
|
|
|
static void fbcon_init(struct vc_data *vc, int init) |
|
{ |
|
struct fb_info *info; |
|
struct fbcon_ops *ops; |
|
struct vc_data **default_mode = vc->vc_display_fg; |
|
struct vc_data *svc = *default_mode; |
|
struct fbcon_display *t, *p = &fb_display[vc->vc_num]; |
|
int logo = 1, new_rows, new_cols, rows, cols; |
|
int ret; |
|
|
|
if (WARN_ON(info_idx == -1)) |
|
return; |
|
|
|
if (con2fb_map[vc->vc_num] == -1) |
|
con2fb_map[vc->vc_num] = info_idx; |
|
|
|
info = registered_fb[con2fb_map[vc->vc_num]]; |
|
|
|
if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET) |
|
logo_shown = FBCON_LOGO_DONTSHOW; |
|
|
|
if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || |
|
(info->fix.type == FB_TYPE_TEXT)) |
|
logo = 0; |
|
|
|
if (var_to_display(p, &info->var, info)) |
|
return; |
|
|
|
if (!info->fbcon_par) |
|
con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); |
|
|
|
/* If we are not the first console on this |
|
fb, copy the font from that console */ |
|
t = &fb_display[fg_console]; |
|
if (!p->fontdata) { |
|
if (t->fontdata) { |
|
struct vc_data *fvc = vc_cons[fg_console].d; |
|
|
|
vc->vc_font.data = (void *)(p->fontdata = |
|
fvc->vc_font.data); |
|
vc->vc_font.width = fvc->vc_font.width; |
|
vc->vc_font.height = fvc->vc_font.height; |
|
vc->vc_font.charcount = fvc->vc_font.charcount; |
|
p->userfont = t->userfont; |
|
|
|
if (p->userfont) |
|
REFCOUNT(p->fontdata)++; |
|
} else { |
|
const struct font_desc *font = NULL; |
|
|
|
if (!fontname[0] || !(font = find_font(fontname))) |
|
font = get_default_font(info->var.xres, |
|
info->var.yres, |
|
info->pixmap.blit_x, |
|
info->pixmap.blit_y); |
|
vc->vc_font.width = font->width; |
|
vc->vc_font.height = font->height; |
|
vc->vc_font.data = (void *)(p->fontdata = font->data); |
|
vc->vc_font.charcount = font->charcount; |
|
} |
|
} |
|
|
|
vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); |
|
vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; |
|
if (vc->vc_font.charcount == 256) { |
|
vc->vc_hi_font_mask = 0; |
|
} else { |
|
vc->vc_hi_font_mask = 0x100; |
|
if (vc->vc_can_do_color) |
|
vc->vc_complement_mask <<= 1; |
|
} |
|
|
|
if (!*svc->vc_uni_pagedir_loc) |
|
con_set_default_unimap(svc); |
|
if (!*vc->vc_uni_pagedir_loc) |
|
con_copy_unimap(vc, svc); |
|
|
|
ops = info->fbcon_par; |
|
ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); |
|
|
|
p->con_rotate = initial_rotation; |
|
if (p->con_rotate == -1) |
|
p->con_rotate = info->fbcon_rotate_hint; |
|
if (p->con_rotate == -1) |
|
p->con_rotate = FB_ROTATE_UR; |
|
|
|
set_blitting_type(vc, info); |
|
|
|
cols = vc->vc_cols; |
|
rows = vc->vc_rows; |
|
new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
|
new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); |
|
new_cols /= vc->vc_font.width; |
|
new_rows /= vc->vc_font.height; |
|
|
|
/* |
|
* We must always set the mode. The mode of the previous console |
|
* driver could be in the same resolution but we are using different |
|
* hardware so we have to initialize the hardware. |
|
* |
|
* We need to do it in fbcon_init() to prevent screen corruption. |
|
*/ |
|
if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { |
|
if (info->fbops->fb_set_par && |
|
!(ops->flags & FBCON_FLAGS_INIT)) { |
|
ret = info->fbops->fb_set_par(info); |
|
|
|
if (ret) |
|
printk(KERN_ERR "fbcon_init: detected " |
|
"unhandled fb_set_par error, " |
|
"error code %d\n", ret); |
|
} |
|
|
|
ops->flags |= FBCON_FLAGS_INIT; |
|
} |
|
|
|
ops->graphics = 0; |
|
|
|
/* |
|
* No more hw acceleration for fbcon. |
|
* |
|
* FIXME: Garbage collect all the now dead code after sufficient time |
|
* has passed. |
|
*/ |
|
p->scrollmode = SCROLL_REDRAW; |
|
|
|
/* |
|
* ++guenther: console.c:vc_allocate() relies on initializing |
|
* vc_{cols,rows}, but we must not set those if we are only |
|
* resizing the console. |
|
*/ |
|
if (init) { |
|
vc->vc_cols = new_cols; |
|
vc->vc_rows = new_rows; |
|
} else |
|
vc_resize(vc, new_cols, new_rows); |
|
|
|
if (logo) |
|
fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); |
|
|
|
if (ops->rotate_font && ops->rotate_font(info, vc)) { |
|
ops->rotate = FB_ROTATE_UR; |
|
set_blitting_type(vc, info); |
|
} |
|
|
|
ops->p = &fb_display[fg_console]; |
|
} |
|
|
|
static void fbcon_free_font(struct fbcon_display *p, bool freefont) |
|
{ |
|
if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) |
|
kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); |
|
p->fontdata = NULL; |
|
p->userfont = 0; |
|
} |
|
|
|
static void set_vc_hi_font(struct vc_data *vc, bool set); |
|
|
|
static void fbcon_deinit(struct vc_data *vc) |
|
{ |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
struct fb_info *info; |
|
struct fbcon_ops *ops; |
|
int idx; |
|
bool free_font = true; |
|
|
|
idx = con2fb_map[vc->vc_num]; |
|
|
|
if (idx == -1) |
|
goto finished; |
|
|
|
info = registered_fb[idx]; |
|
|
|
if (!info) |
|
goto finished; |
|
|
|
if (info->flags & FBINFO_MISC_FIRMWARE) |
|
free_font = false; |
|
ops = info->fbcon_par; |
|
|
|
if (!ops) |
|
goto finished; |
|
|
|
if (con_is_visible(vc)) |
|
fbcon_del_cursor_timer(info); |
|
|
|
ops->flags &= ~FBCON_FLAGS_INIT; |
|
finished: |
|
|
|
fbcon_free_font(p, free_font); |
|
if (free_font) |
|
vc->vc_font.data = NULL; |
|
|
|
if (vc->vc_hi_font_mask && vc->vc_screenbuf) |
|
set_vc_hi_font(vc, false); |
|
|
|
if (!con_is_bound(&fb_con)) |
|
fbcon_exit(); |
|
|
|
if (vc->vc_num == logo_shown) |
|
logo_shown = FBCON_LOGO_CANSHOW; |
|
|
|
return; |
|
} |
|
|
|
/* ====================================================================== */ |
|
|
|
/* fbcon_XXX routines - interface used by the world |
|
* |
|
* This system is now divided into two levels because of complications |
|
* caused by hardware scrolling. Top level functions: |
|
* |
|
* fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins() |
|
* |
|
* handles y values in range [0, scr_height-1] that correspond to real |
|
* screen positions. y_wrap shift means that first line of bitmap may be |
|
* anywhere on this display. These functions convert lineoffsets to |
|
* bitmap offsets and deal with the wrap-around case by splitting blits. |
|
* |
|
* fbcon_bmove_physical_8() -- These functions fast implementations |
|
* fbcon_clear_physical_8() -- of original fbcon_XXX fns. |
|
* fbcon_putc_physical_8() -- (font width != 8) may be added later |
|
* |
|
* WARNING: |
|
* |
|
* At the moment fbcon_putc() cannot blit across vertical wrap boundary |
|
* Implies should only really hardware scroll in rows. Only reason for |
|
* restriction is simplicity & efficiency at the moment. |
|
*/ |
|
|
|
static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, |
|
int width) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
u_int y_break; |
|
|
|
if (fbcon_is_inactive(vc, info)) |
|
return; |
|
|
|
if (!height || !width) |
|
return; |
|
|
|
if (sy < vc->vc_top && vc->vc_top == logo_lines) { |
|
vc->vc_top = 0; |
|
/* |
|
* If the font dimensions are not an integral of the display |
|
* dimensions then the ops->clear below won't end up clearing |
|
* the margins. Call clear_margins here in case the logo |
|
* bitmap stretched into the margin area. |
|
*/ |
|
fbcon_clear_margins(vc, 0); |
|
} |
|
|
|
/* Split blits that cross physical y_wrap boundary */ |
|
|
|
y_break = p->vrows - p->yscroll; |
|
if (sy < y_break && sy + height - 1 >= y_break) { |
|
u_int b = y_break - sy; |
|
ops->clear(vc, info, real_y(p, sy), sx, b, width); |
|
ops->clear(vc, info, real_y(p, sy + b), sx, height - b, |
|
width); |
|
} else |
|
ops->clear(vc, info, real_y(p, sy), sx, height, width); |
|
} |
|
|
|
static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, |
|
int count, int ypos, int xpos) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
if (!fbcon_is_inactive(vc, info)) |
|
ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, |
|
get_color(vc, info, scr_readw(s), 1), |
|
get_color(vc, info, scr_readw(s), 0)); |
|
} |
|
|
|
static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) |
|
{ |
|
unsigned short chr; |
|
|
|
scr_writew(c, &chr); |
|
fbcon_putcs(vc, &chr, 1, ypos, xpos); |
|
} |
|
|
|
static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
if (!fbcon_is_inactive(vc, info)) |
|
ops->clear_margins(vc, info, margin_color, bottom_only); |
|
} |
|
|
|
static void fbcon_cursor(struct vc_data *vc, int mode) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
int c = scr_readw((u16 *) vc->vc_pos); |
|
|
|
ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); |
|
|
|
if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) |
|
return; |
|
|
|
if (vc->vc_cursor_type & CUR_SW) |
|
fbcon_del_cursor_timer(info); |
|
else |
|
fbcon_add_cursor_timer(info); |
|
|
|
ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; |
|
|
|
if (!ops->cursor) |
|
return; |
|
|
|
ops->cursor(vc, info, mode, get_color(vc, info, c, 1), |
|
get_color(vc, info, c, 0)); |
|
} |
|
|
|
static int scrollback_phys_max = 0; |
|
static int scrollback_max = 0; |
|
static int scrollback_current = 0; |
|
|
|
static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, |
|
int unit) |
|
{ |
|
struct fbcon_display *p, *t; |
|
struct vc_data **default_mode, *vc; |
|
struct vc_data *svc; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
int rows, cols; |
|
|
|
p = &fb_display[unit]; |
|
|
|
if (var_to_display(p, var, info)) |
|
return; |
|
|
|
vc = vc_cons[unit].d; |
|
|
|
if (!vc) |
|
return; |
|
|
|
default_mode = vc->vc_display_fg; |
|
svc = *default_mode; |
|
t = &fb_display[svc->vc_num]; |
|
|
|
if (!vc->vc_font.data) { |
|
vc->vc_font.data = (void *)(p->fontdata = t->fontdata); |
|
vc->vc_font.width = (*default_mode)->vc_font.width; |
|
vc->vc_font.height = (*default_mode)->vc_font.height; |
|
vc->vc_font.charcount = (*default_mode)->vc_font.charcount; |
|
p->userfont = t->userfont; |
|
if (p->userfont) |
|
REFCOUNT(p->fontdata)++; |
|
} |
|
|
|
var->activate = FB_ACTIVATE_NOW; |
|
info->var.activate = var->activate; |
|
var->yoffset = info->var.yoffset; |
|
var->xoffset = info->var.xoffset; |
|
fb_set_var(info, var); |
|
ops->var = info->var; |
|
vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); |
|
vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; |
|
if (vc->vc_font.charcount == 256) { |
|
vc->vc_hi_font_mask = 0; |
|
} else { |
|
vc->vc_hi_font_mask = 0x100; |
|
if (vc->vc_can_do_color) |
|
vc->vc_complement_mask <<= 1; |
|
} |
|
|
|
if (!*svc->vc_uni_pagedir_loc) |
|
con_set_default_unimap(svc); |
|
if (!*vc->vc_uni_pagedir_loc) |
|
con_copy_unimap(vc, svc); |
|
|
|
cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
|
rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); |
|
cols /= vc->vc_font.width; |
|
rows /= vc->vc_font.height; |
|
vc_resize(vc, cols, rows); |
|
|
|
if (con_is_visible(vc)) { |
|
update_screen(vc); |
|
} |
|
} |
|
|
|
static __inline__ void ywrap_up(struct vc_data *vc, int count) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
|
|
p->yscroll += count; |
|
if (p->yscroll >= p->vrows) /* Deal with wrap */ |
|
p->yscroll -= p->vrows; |
|
ops->var.xoffset = 0; |
|
ops->var.yoffset = p->yscroll * vc->vc_font.height; |
|
ops->var.vmode |= FB_VMODE_YWRAP; |
|
ops->update_start(info); |
|
scrollback_max += count; |
|
if (scrollback_max > scrollback_phys_max) |
|
scrollback_max = scrollback_phys_max; |
|
scrollback_current = 0; |
|
} |
|
|
|
static __inline__ void ywrap_down(struct vc_data *vc, int count) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
|
|
p->yscroll -= count; |
|
if (p->yscroll < 0) /* Deal with wrap */ |
|
p->yscroll += p->vrows; |
|
ops->var.xoffset = 0; |
|
ops->var.yoffset = p->yscroll * vc->vc_font.height; |
|
ops->var.vmode |= FB_VMODE_YWRAP; |
|
ops->update_start(info); |
|
scrollback_max -= count; |
|
if (scrollback_max < 0) |
|
scrollback_max = 0; |
|
scrollback_current = 0; |
|
} |
|
|
|
static __inline__ void ypan_up(struct vc_data *vc, int count) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
p->yscroll += count; |
|
if (p->yscroll > p->vrows - vc->vc_rows) { |
|
ops->bmove(vc, info, p->vrows - vc->vc_rows, |
|
0, 0, 0, vc->vc_rows, vc->vc_cols); |
|
p->yscroll -= p->vrows - vc->vc_rows; |
|
} |
|
|
|
ops->var.xoffset = 0; |
|
ops->var.yoffset = p->yscroll * vc->vc_font.height; |
|
ops->var.vmode &= ~FB_VMODE_YWRAP; |
|
ops->update_start(info); |
|
fbcon_clear_margins(vc, 1); |
|
scrollback_max += count; |
|
if (scrollback_max > scrollback_phys_max) |
|
scrollback_max = scrollback_phys_max; |
|
scrollback_current = 0; |
|
} |
|
|
|
static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
|
|
p->yscroll += count; |
|
|
|
if (p->yscroll > p->vrows - vc->vc_rows) { |
|
p->yscroll -= p->vrows - vc->vc_rows; |
|
fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); |
|
} |
|
|
|
ops->var.xoffset = 0; |
|
ops->var.yoffset = p->yscroll * vc->vc_font.height; |
|
ops->var.vmode &= ~FB_VMODE_YWRAP; |
|
ops->update_start(info); |
|
fbcon_clear_margins(vc, 1); |
|
scrollback_max += count; |
|
if (scrollback_max > scrollback_phys_max) |
|
scrollback_max = scrollback_phys_max; |
|
scrollback_current = 0; |
|
} |
|
|
|
static __inline__ void ypan_down(struct vc_data *vc, int count) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
p->yscroll -= count; |
|
if (p->yscroll < 0) { |
|
ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, |
|
0, vc->vc_rows, vc->vc_cols); |
|
p->yscroll += p->vrows - vc->vc_rows; |
|
} |
|
|
|
ops->var.xoffset = 0; |
|
ops->var.yoffset = p->yscroll * vc->vc_font.height; |
|
ops->var.vmode &= ~FB_VMODE_YWRAP; |
|
ops->update_start(info); |
|
fbcon_clear_margins(vc, 1); |
|
scrollback_max -= count; |
|
if (scrollback_max < 0) |
|
scrollback_max = 0; |
|
scrollback_current = 0; |
|
} |
|
|
|
static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
|
|
p->yscroll -= count; |
|
|
|
if (p->yscroll < 0) { |
|
p->yscroll += p->vrows - vc->vc_rows; |
|
fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); |
|
} |
|
|
|
ops->var.xoffset = 0; |
|
ops->var.yoffset = p->yscroll * vc->vc_font.height; |
|
ops->var.vmode &= ~FB_VMODE_YWRAP; |
|
ops->update_start(info); |
|
fbcon_clear_margins(vc, 1); |
|
scrollback_max -= count; |
|
if (scrollback_max < 0) |
|
scrollback_max = 0; |
|
scrollback_current = 0; |
|
} |
|
|
|
static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p, |
|
int line, int count, int dy) |
|
{ |
|
unsigned short *s = (unsigned short *) |
|
(vc->vc_origin + vc->vc_size_row * line); |
|
|
|
while (count--) { |
|
unsigned short *start = s; |
|
unsigned short *le = advance_row(s, 1); |
|
unsigned short c; |
|
int x = 0; |
|
unsigned short attr = 1; |
|
|
|
do { |
|
c = scr_readw(s); |
|
if (attr != (c & 0xff00)) { |
|
attr = c & 0xff00; |
|
if (s > start) { |
|
fbcon_putcs(vc, start, s - start, |
|
dy, x); |
|
x += s - start; |
|
start = s; |
|
} |
|
} |
|
console_conditional_schedule(); |
|
s++; |
|
} while (s < le); |
|
if (s > start) |
|
fbcon_putcs(vc, start, s - start, dy, x); |
|
console_conditional_schedule(); |
|
dy++; |
|
} |
|
} |
|
|
|
static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, |
|
struct fbcon_display *p, int line, int count, int ycount) |
|
{ |
|
int offset = ycount * vc->vc_cols; |
|
unsigned short *d = (unsigned short *) |
|
(vc->vc_origin + vc->vc_size_row * line); |
|
unsigned short *s = d + offset; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
while (count--) { |
|
unsigned short *start = s; |
|
unsigned short *le = advance_row(s, 1); |
|
unsigned short c; |
|
int x = 0; |
|
|
|
do { |
|
c = scr_readw(s); |
|
|
|
if (c == scr_readw(d)) { |
|
if (s > start) { |
|
ops->bmove(vc, info, line + ycount, x, |
|
line, x, 1, s-start); |
|
x += s - start + 1; |
|
start = s + 1; |
|
} else { |
|
x++; |
|
start++; |
|
} |
|
} |
|
|
|
scr_writew(c, d); |
|
console_conditional_schedule(); |
|
s++; |
|
d++; |
|
} while (s < le); |
|
if (s > start) |
|
ops->bmove(vc, info, line + ycount, x, line, x, 1, |
|
s-start); |
|
console_conditional_schedule(); |
|
if (ycount > 0) |
|
line++; |
|
else { |
|
line--; |
|
/* NOTE: We subtract two lines from these pointers */ |
|
s -= vc->vc_size_row; |
|
d -= vc->vc_size_row; |
|
} |
|
} |
|
} |
|
|
|
static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p, |
|
int line, int count, int offset) |
|
{ |
|
unsigned short *d = (unsigned short *) |
|
(vc->vc_origin + vc->vc_size_row * line); |
|
unsigned short *s = d + offset; |
|
|
|
while (count--) { |
|
unsigned short *start = s; |
|
unsigned short *le = advance_row(s, 1); |
|
unsigned short c; |
|
int x = 0; |
|
unsigned short attr = 1; |
|
|
|
do { |
|
c = scr_readw(s); |
|
if (attr != (c & 0xff00)) { |
|
attr = c & 0xff00; |
|
if (s > start) { |
|
fbcon_putcs(vc, start, s - start, |
|
line, x); |
|
x += s - start; |
|
start = s; |
|
} |
|
} |
|
if (c == scr_readw(d)) { |
|
if (s > start) { |
|
fbcon_putcs(vc, start, s - start, |
|
line, x); |
|
x += s - start + 1; |
|
start = s + 1; |
|
} else { |
|
x++; |
|
start++; |
|
} |
|
} |
|
scr_writew(c, d); |
|
console_conditional_schedule(); |
|
s++; |
|
d++; |
|
} while (s < le); |
|
if (s > start) |
|
fbcon_putcs(vc, start, s - start, line, x); |
|
console_conditional_schedule(); |
|
if (offset > 0) |
|
line++; |
|
else { |
|
line--; |
|
/* NOTE: We subtract two lines from these pointers */ |
|
s -= vc->vc_size_row; |
|
d -= vc->vc_size_row; |
|
} |
|
} |
|
} |
|
|
|
static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, |
|
enum con_scroll dir, unsigned int count) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; |
|
|
|
if (fbcon_is_inactive(vc, info)) |
|
return true; |
|
|
|
fbcon_cursor(vc, CM_ERASE); |
|
|
|
/* |
|
* ++Geert: Only use ywrap/ypan if the console is in text mode |
|
* ++Andrew: Only use ypan on hardware text mode when scrolling the |
|
* whole screen (prevents flicker). |
|
*/ |
|
|
|
switch (dir) { |
|
case SM_UP: |
|
if (count > vc->vc_rows) /* Maximum realistic size */ |
|
count = vc->vc_rows; |
|
if (logo_shown >= 0) |
|
goto redraw_up; |
|
switch (p->scrollmode) { |
|
case SCROLL_MOVE: |
|
fbcon_redraw_blit(vc, info, p, t, b - t - count, |
|
count); |
|
fbcon_clear(vc, b - count, 0, count, vc->vc_cols); |
|
scr_memsetw((unsigned short *) (vc->vc_origin + |
|
vc->vc_size_row * |
|
(b - count)), |
|
vc->vc_video_erase_char, |
|
vc->vc_size_row * count); |
|
return true; |
|
|
|
case SCROLL_WRAP_MOVE: |
|
if (b - t - count > 3 * vc->vc_rows >> 2) { |
|
if (t > 0) |
|
fbcon_bmove(vc, 0, 0, count, 0, t, |
|
vc->vc_cols); |
|
ywrap_up(vc, count); |
|
if (vc->vc_rows - b > 0) |
|
fbcon_bmove(vc, b - count, 0, b, 0, |
|
vc->vc_rows - b, |
|
vc->vc_cols); |
|
} else if (info->flags & FBINFO_READS_FAST) |
|
fbcon_bmove(vc, t + count, 0, t, 0, |
|
b - t - count, vc->vc_cols); |
|
else |
|
goto redraw_up; |
|
fbcon_clear(vc, b - count, 0, count, vc->vc_cols); |
|
break; |
|
|
|
case SCROLL_PAN_REDRAW: |
|
if ((p->yscroll + count <= |
|
2 * (p->vrows - vc->vc_rows)) |
|
&& ((!scroll_partial && (b - t == vc->vc_rows)) |
|
|| (scroll_partial |
|
&& (b - t - count > |
|
3 * vc->vc_rows >> 2)))) { |
|
if (t > 0) |
|
fbcon_redraw_move(vc, p, 0, t, count); |
|
ypan_up_redraw(vc, t, count); |
|
if (vc->vc_rows - b > 0) |
|
fbcon_redraw_move(vc, p, b, |
|
vc->vc_rows - b, b); |
|
} else |
|
fbcon_redraw_move(vc, p, t + count, b - t - count, t); |
|
fbcon_clear(vc, b - count, 0, count, vc->vc_cols); |
|
break; |
|
|
|
case SCROLL_PAN_MOVE: |
|
if ((p->yscroll + count <= |
|
2 * (p->vrows - vc->vc_rows)) |
|
&& ((!scroll_partial && (b - t == vc->vc_rows)) |
|
|| (scroll_partial |
|
&& (b - t - count > |
|
3 * vc->vc_rows >> 2)))) { |
|
if (t > 0) |
|
fbcon_bmove(vc, 0, 0, count, 0, t, |
|
vc->vc_cols); |
|
ypan_up(vc, count); |
|
if (vc->vc_rows - b > 0) |
|
fbcon_bmove(vc, b - count, 0, b, 0, |
|
vc->vc_rows - b, |
|
vc->vc_cols); |
|
} else if (info->flags & FBINFO_READS_FAST) |
|
fbcon_bmove(vc, t + count, 0, t, 0, |
|
b - t - count, vc->vc_cols); |
|
else |
|
goto redraw_up; |
|
fbcon_clear(vc, b - count, 0, count, vc->vc_cols); |
|
break; |
|
|
|
case SCROLL_REDRAW: |
|
redraw_up: |
|
fbcon_redraw(vc, p, t, b - t - count, |
|
count * vc->vc_cols); |
|
fbcon_clear(vc, b - count, 0, count, vc->vc_cols); |
|
scr_memsetw((unsigned short *) (vc->vc_origin + |
|
vc->vc_size_row * |
|
(b - count)), |
|
vc->vc_video_erase_char, |
|
vc->vc_size_row * count); |
|
return true; |
|
} |
|
break; |
|
|
|
case SM_DOWN: |
|
if (count > vc->vc_rows) /* Maximum realistic size */ |
|
count = vc->vc_rows; |
|
if (logo_shown >= 0) |
|
goto redraw_down; |
|
switch (p->scrollmode) { |
|
case SCROLL_MOVE: |
|
fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, |
|
-count); |
|
fbcon_clear(vc, t, 0, count, vc->vc_cols); |
|
scr_memsetw((unsigned short *) (vc->vc_origin + |
|
vc->vc_size_row * |
|
t), |
|
vc->vc_video_erase_char, |
|
vc->vc_size_row * count); |
|
return true; |
|
|
|
case SCROLL_WRAP_MOVE: |
|
if (b - t - count > 3 * vc->vc_rows >> 2) { |
|
if (vc->vc_rows - b > 0) |
|
fbcon_bmove(vc, b, 0, b - count, 0, |
|
vc->vc_rows - b, |
|
vc->vc_cols); |
|
ywrap_down(vc, count); |
|
if (t > 0) |
|
fbcon_bmove(vc, count, 0, 0, 0, t, |
|
vc->vc_cols); |
|
} else if (info->flags & FBINFO_READS_FAST) |
|
fbcon_bmove(vc, t, 0, t + count, 0, |
|
b - t - count, vc->vc_cols); |
|
else |
|
goto redraw_down; |
|
fbcon_clear(vc, t, 0, count, vc->vc_cols); |
|
break; |
|
|
|
case SCROLL_PAN_MOVE: |
|
if ((count - p->yscroll <= p->vrows - vc->vc_rows) |
|
&& ((!scroll_partial && (b - t == vc->vc_rows)) |
|
|| (scroll_partial |
|
&& (b - t - count > |
|
3 * vc->vc_rows >> 2)))) { |
|
if (vc->vc_rows - b > 0) |
|
fbcon_bmove(vc, b, 0, b - count, 0, |
|
vc->vc_rows - b, |
|
vc->vc_cols); |
|
ypan_down(vc, count); |
|
if (t > 0) |
|
fbcon_bmove(vc, count, 0, 0, 0, t, |
|
vc->vc_cols); |
|
} else if (info->flags & FBINFO_READS_FAST) |
|
fbcon_bmove(vc, t, 0, t + count, 0, |
|
b - t - count, vc->vc_cols); |
|
else |
|
goto redraw_down; |
|
fbcon_clear(vc, t, 0, count, vc->vc_cols); |
|
break; |
|
|
|
case SCROLL_PAN_REDRAW: |
|
if ((count - p->yscroll <= p->vrows - vc->vc_rows) |
|
&& ((!scroll_partial && (b - t == vc->vc_rows)) |
|
|| (scroll_partial |
|
&& (b - t - count > |
|
3 * vc->vc_rows >> 2)))) { |
|
if (vc->vc_rows - b > 0) |
|
fbcon_redraw_move(vc, p, b, vc->vc_rows - b, |
|
b - count); |
|
ypan_down_redraw(vc, t, count); |
|
if (t > 0) |
|
fbcon_redraw_move(vc, p, count, t, 0); |
|
} else |
|
fbcon_redraw_move(vc, p, t, b - t - count, t + count); |
|
fbcon_clear(vc, t, 0, count, vc->vc_cols); |
|
break; |
|
|
|
case SCROLL_REDRAW: |
|
redraw_down: |
|
fbcon_redraw(vc, p, b - 1, b - t - count, |
|
-count * vc->vc_cols); |
|
fbcon_clear(vc, t, 0, count, vc->vc_cols); |
|
scr_memsetw((unsigned short *) (vc->vc_origin + |
|
vc->vc_size_row * |
|
t), |
|
vc->vc_video_erase_char, |
|
vc->vc_size_row * count); |
|
return true; |
|
} |
|
} |
|
return false; |
|
} |
|
|
|
|
|
static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, |
|
int height, int width) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
|
|
if (fbcon_is_inactive(vc, info)) |
|
return; |
|
|
|
if (!width || !height) |
|
return; |
|
|
|
/* Split blits that cross physical y_wrap case. |
|
* Pathological case involves 4 blits, better to use recursive |
|
* code rather than unrolled case |
|
* |
|
* Recursive invocations don't need to erase the cursor over and |
|
* over again, so we use fbcon_bmove_rec() |
|
*/ |
|
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width, |
|
p->vrows - p->yscroll); |
|
} |
|
|
|
static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx, |
|
int dy, int dx, int height, int width, u_int y_break) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
u_int b; |
|
|
|
if (sy < y_break && sy + height > y_break) { |
|
b = y_break - sy; |
|
if (dy < sy) { /* Avoid trashing self */ |
|
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, |
|
y_break); |
|
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, |
|
height - b, width, y_break); |
|
} else { |
|
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, |
|
height - b, width, y_break); |
|
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, |
|
y_break); |
|
} |
|
return; |
|
} |
|
|
|
if (dy < y_break && dy + height > y_break) { |
|
b = y_break - dy; |
|
if (dy < sy) { /* Avoid trashing self */ |
|
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, |
|
y_break); |
|
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, |
|
height - b, width, y_break); |
|
} else { |
|
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, |
|
height - b, width, y_break); |
|
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, |
|
y_break); |
|
} |
|
return; |
|
} |
|
ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, |
|
height, width); |
|
} |
|
|
|
static void updatescrollmode(struct fbcon_display *p, |
|
struct fb_info *info, |
|
struct vc_data *vc) |
|
{ |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
int fh = vc->vc_font.height; |
|
int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); |
|
int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, |
|
info->var.xres_virtual); |
|
|
|
p->vrows = vyres/fh; |
|
if (yres > (fh * (vc->vc_rows + 1))) |
|
p->vrows -= (yres - (fh * vc->vc_rows)) / fh; |
|
if ((yres % fh) && (vyres % fh < yres % fh)) |
|
p->vrows--; |
|
} |
|
|
|
#define PITCH(w) (((w) + 7) >> 3) |
|
#define CALC_FONTSZ(h, p, c) ((h) * (p) * (c)) /* size = height * pitch * charcount */ |
|
|
|
static int fbcon_resize(struct vc_data *vc, unsigned int width, |
|
unsigned int height, unsigned int user) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
struct fb_var_screeninfo var = info->var; |
|
int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; |
|
|
|
if (p->userfont && FNTSIZE(vc->vc_font.data)) { |
|
int size; |
|
int pitch = PITCH(vc->vc_font.width); |
|
|
|
/* |
|
* If user font, ensure that a possible change to user font |
|
* height or width will not allow a font data out-of-bounds access. |
|
* NOTE: must use original charcount in calculation as font |
|
* charcount can change and cannot be used to determine the |
|
* font data allocated size. |
|
*/ |
|
if (pitch <= 0) |
|
return -EINVAL; |
|
size = CALC_FONTSZ(vc->vc_font.height, pitch, vc->vc_font.charcount); |
|
if (size > FNTSIZE(vc->vc_font.data)) |
|
return -EINVAL; |
|
} |
|
|
|
virt_w = FBCON_SWAP(ops->rotate, width, height); |
|
virt_h = FBCON_SWAP(ops->rotate, height, width); |
|
virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, |
|
vc->vc_font.height); |
|
virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, |
|
vc->vc_font.width); |
|
var.xres = virt_w * virt_fw; |
|
var.yres = virt_h * virt_fh; |
|
x_diff = info->var.xres - var.xres; |
|
y_diff = info->var.yres - var.yres; |
|
if (x_diff < 0 || x_diff > virt_fw || |
|
y_diff < 0 || y_diff > virt_fh) { |
|
const struct fb_videomode *mode; |
|
|
|
pr_debug("attempting resize %ix%i\n", var.xres, var.yres); |
|
mode = fb_find_best_mode(&var, &info->modelist); |
|
if (mode == NULL) |
|
return -EINVAL; |
|
display_to_var(&var, p); |
|
fb_videomode_to_var(&var, mode); |
|
|
|
if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) |
|
return -EINVAL; |
|
|
|
pr_debug("resize now %ix%i\n", var.xres, var.yres); |
|
if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { |
|
var.activate = FB_ACTIVATE_NOW | |
|
FB_ACTIVATE_FORCE; |
|
fb_set_var(info, &var); |
|
} |
|
var_to_display(p, &info->var, info); |
|
ops->var = info->var; |
|
} |
|
updatescrollmode(p, info, vc); |
|
return 0; |
|
} |
|
|
|
static int fbcon_switch(struct vc_data *vc) |
|
{ |
|
struct fb_info *info, *old_info = NULL; |
|
struct fbcon_ops *ops; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
struct fb_var_screeninfo var; |
|
int i, ret, prev_console; |
|
|
|
info = registered_fb[con2fb_map[vc->vc_num]]; |
|
ops = info->fbcon_par; |
|
|
|
if (logo_shown >= 0) { |
|
struct vc_data *conp2 = vc_cons[logo_shown].d; |
|
|
|
if (conp2->vc_top == logo_lines |
|
&& conp2->vc_bottom == conp2->vc_rows) |
|
conp2->vc_top = 0; |
|
logo_shown = FBCON_LOGO_CANSHOW; |
|
} |
|
|
|
prev_console = ops->currcon; |
|
if (prev_console != -1) |
|
old_info = registered_fb[con2fb_map[prev_console]]; |
|
/* |
|
* FIXME: If we have multiple fbdev's loaded, we need to |
|
* update all info->currcon. Perhaps, we can place this |
|
* in a centralized structure, but this might break some |
|
* drivers. |
|
* |
|
* info->currcon = vc->vc_num; |
|
*/ |
|
for_each_registered_fb(i) { |
|
if (registered_fb[i]->fbcon_par) { |
|
struct fbcon_ops *o = registered_fb[i]->fbcon_par; |
|
|
|
o->currcon = vc->vc_num; |
|
} |
|
} |
|
memset(&var, 0, sizeof(struct fb_var_screeninfo)); |
|
display_to_var(&var, p); |
|
var.activate = FB_ACTIVATE_NOW; |
|
|
|
/* |
|
* make sure we don't unnecessarily trip the memcmp() |
|
* in fb_set_var() |
|
*/ |
|
info->var.activate = var.activate; |
|
var.vmode |= info->var.vmode & ~FB_VMODE_MASK; |
|
fb_set_var(info, &var); |
|
ops->var = info->var; |
|
|
|
if (old_info != NULL && (old_info != info || |
|
info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { |
|
if (info->fbops->fb_set_par) { |
|
ret = info->fbops->fb_set_par(info); |
|
|
|
if (ret) |
|
printk(KERN_ERR "fbcon_switch: detected " |
|
"unhandled fb_set_par error, " |
|
"error code %d\n", ret); |
|
} |
|
|
|
if (old_info != info) |
|
fbcon_del_cursor_timer(old_info); |
|
} |
|
|
|
if (fbcon_is_inactive(vc, info) || |
|
ops->blank_state != FB_BLANK_UNBLANK) |
|
fbcon_del_cursor_timer(info); |
|
else |
|
fbcon_add_cursor_timer(info); |
|
|
|
set_blitting_type(vc, info); |
|
ops->cursor_reset = 1; |
|
|
|
if (ops->rotate_font && ops->rotate_font(info, vc)) { |
|
ops->rotate = FB_ROTATE_UR; |
|
set_blitting_type(vc, info); |
|
} |
|
|
|
vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); |
|
vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; |
|
|
|
if (vc->vc_font.charcount > 256) |
|
vc->vc_complement_mask <<= 1; |
|
|
|
updatescrollmode(p, info, vc); |
|
|
|
switch (p->scrollmode) { |
|
case SCROLL_WRAP_MOVE: |
|
scrollback_phys_max = p->vrows - vc->vc_rows; |
|
break; |
|
case SCROLL_PAN_MOVE: |
|
case SCROLL_PAN_REDRAW: |
|
scrollback_phys_max = p->vrows - 2 * vc->vc_rows; |
|
if (scrollback_phys_max < 0) |
|
scrollback_phys_max = 0; |
|
break; |
|
default: |
|
scrollback_phys_max = 0; |
|
break; |
|
} |
|
|
|
scrollback_max = 0; |
|
scrollback_current = 0; |
|
|
|
if (!fbcon_is_inactive(vc, info)) { |
|
ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; |
|
ops->update_start(info); |
|
} |
|
|
|
fbcon_set_palette(vc, color_table); |
|
fbcon_clear_margins(vc, 0); |
|
|
|
if (logo_shown == FBCON_LOGO_DRAW) { |
|
|
|
logo_shown = fg_console; |
|
/* This is protected above by initmem_freed */ |
|
fb_show_logo(info, ops->rotate); |
|
update_region(vc, |
|
vc->vc_origin + vc->vc_size_row * vc->vc_top, |
|
vc->vc_size_row * (vc->vc_bottom - |
|
vc->vc_top) / 2); |
|
return 0; |
|
} |
|
return 1; |
|
} |
|
|
|
static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, |
|
int blank) |
|
{ |
|
if (blank) { |
|
unsigned short charmask = vc->vc_hi_font_mask ? |
|
0x1ff : 0xff; |
|
unsigned short oldc; |
|
|
|
oldc = vc->vc_video_erase_char; |
|
vc->vc_video_erase_char &= charmask; |
|
fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); |
|
vc->vc_video_erase_char = oldc; |
|
} |
|
} |
|
|
|
static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
if (mode_switch) { |
|
struct fb_var_screeninfo var = info->var; |
|
|
|
ops->graphics = 1; |
|
|
|
if (!blank) { |
|
var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE | |
|
FB_ACTIVATE_KD_TEXT; |
|
fb_set_var(info, &var); |
|
ops->graphics = 0; |
|
ops->var = info->var; |
|
} |
|
} |
|
|
|
if (!fbcon_is_inactive(vc, info)) { |
|
if (ops->blank_state != blank) { |
|
ops->blank_state = blank; |
|
fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); |
|
ops->cursor_flash = (!blank); |
|
|
|
if (fb_blank(info, blank)) |
|
fbcon_generic_blank(vc, info, blank); |
|
} |
|
|
|
if (!blank) |
|
update_screen(vc); |
|
} |
|
|
|
if (mode_switch || fbcon_is_inactive(vc, info) || |
|
ops->blank_state != FB_BLANK_UNBLANK) |
|
fbcon_del_cursor_timer(info); |
|
else |
|
fbcon_add_cursor_timer(info); |
|
|
|
return 0; |
|
} |
|
|
|
static int fbcon_debug_enter(struct vc_data *vc) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
ops->save_graphics = ops->graphics; |
|
ops->graphics = 0; |
|
if (info->fbops->fb_debug_enter) |
|
info->fbops->fb_debug_enter(info); |
|
fbcon_set_palette(vc, color_table); |
|
return 0; |
|
} |
|
|
|
static int fbcon_debug_leave(struct vc_data *vc) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
ops->graphics = ops->save_graphics; |
|
if (info->fbops->fb_debug_leave) |
|
info->fbops->fb_debug_leave(info); |
|
return 0; |
|
} |
|
|
|
static int fbcon_get_font(struct vc_data *vc, struct console_font *font) |
|
{ |
|
u8 *fontdata = vc->vc_font.data; |
|
u8 *data = font->data; |
|
int i, j; |
|
|
|
font->width = vc->vc_font.width; |
|
font->height = vc->vc_font.height; |
|
font->charcount = vc->vc_hi_font_mask ? 512 : 256; |
|
if (!font->data) |
|
return 0; |
|
|
|
if (font->width <= 8) { |
|
j = vc->vc_font.height; |
|
if (font->charcount * j > FNTSIZE(fontdata)) |
|
return -EINVAL; |
|
|
|
for (i = 0; i < font->charcount; i++) { |
|
memcpy(data, fontdata, j); |
|
memset(data + j, 0, 32 - j); |
|
data += 32; |
|
fontdata += j; |
|
} |
|
} else if (font->width <= 16) { |
|
j = vc->vc_font.height * 2; |
|
if (font->charcount * j > FNTSIZE(fontdata)) |
|
return -EINVAL; |
|
|
|
for (i = 0; i < font->charcount; i++) { |
|
memcpy(data, fontdata, j); |
|
memset(data + j, 0, 64 - j); |
|
data += 64; |
|
fontdata += j; |
|
} |
|
} else if (font->width <= 24) { |
|
if (font->charcount * (vc->vc_font.height * sizeof(u32)) > FNTSIZE(fontdata)) |
|
return -EINVAL; |
|
|
|
for (i = 0; i < font->charcount; i++) { |
|
for (j = 0; j < vc->vc_font.height; j++) { |
|
*data++ = fontdata[0]; |
|
*data++ = fontdata[1]; |
|
*data++ = fontdata[2]; |
|
fontdata += sizeof(u32); |
|
} |
|
memset(data, 0, 3 * (32 - j)); |
|
data += 3 * (32 - j); |
|
} |
|
} else { |
|
j = vc->vc_font.height * 4; |
|
if (font->charcount * j > FNTSIZE(fontdata)) |
|
return -EINVAL; |
|
|
|
for (i = 0; i < font->charcount; i++) { |
|
memcpy(data, fontdata, j); |
|
memset(data + j, 0, 128 - j); |
|
data += 128; |
|
fontdata += j; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
/* set/clear vc_hi_font_mask and update vc attrs accordingly */ |
|
static void set_vc_hi_font(struct vc_data *vc, bool set) |
|
{ |
|
if (!set) { |
|
vc->vc_hi_font_mask = 0; |
|
if (vc->vc_can_do_color) { |
|
vc->vc_complement_mask >>= 1; |
|
vc->vc_s_complement_mask >>= 1; |
|
} |
|
|
|
/* ++Edmund: reorder the attribute bits */ |
|
if (vc->vc_can_do_color) { |
|
unsigned short *cp = |
|
(unsigned short *) vc->vc_origin; |
|
int count = vc->vc_screenbuf_size / 2; |
|
unsigned short c; |
|
for (; count > 0; count--, cp++) { |
|
c = scr_readw(cp); |
|
scr_writew(((c & 0xfe00) >> 1) | |
|
(c & 0xff), cp); |
|
} |
|
c = vc->vc_video_erase_char; |
|
vc->vc_video_erase_char = |
|
((c & 0xfe00) >> 1) | (c & 0xff); |
|
vc->vc_attr >>= 1; |
|
} |
|
} else { |
|
vc->vc_hi_font_mask = 0x100; |
|
if (vc->vc_can_do_color) { |
|
vc->vc_complement_mask <<= 1; |
|
vc->vc_s_complement_mask <<= 1; |
|
} |
|
|
|
/* ++Edmund: reorder the attribute bits */ |
|
{ |
|
unsigned short *cp = |
|
(unsigned short *) vc->vc_origin; |
|
int count = vc->vc_screenbuf_size / 2; |
|
unsigned short c; |
|
for (; count > 0; count--, cp++) { |
|
unsigned short newc; |
|
c = scr_readw(cp); |
|
if (vc->vc_can_do_color) |
|
newc = |
|
((c & 0xff00) << 1) | (c & |
|
0xff); |
|
else |
|
newc = c & ~0x100; |
|
scr_writew(newc, cp); |
|
} |
|
c = vc->vc_video_erase_char; |
|
if (vc->vc_can_do_color) { |
|
vc->vc_video_erase_char = |
|
((c & 0xff00) << 1) | (c & 0xff); |
|
vc->vc_attr <<= 1; |
|
} else |
|
vc->vc_video_erase_char = c & ~0x100; |
|
} |
|
} |
|
} |
|
|
|
static int fbcon_do_set_font(struct vc_data *vc, int w, int h, int charcount, |
|
const u8 * data, int userfont) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
struct fbcon_display *p = &fb_display[vc->vc_num]; |
|
int resize; |
|
char *old_data = NULL; |
|
|
|
resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); |
|
if (p->userfont) |
|
old_data = vc->vc_font.data; |
|
vc->vc_font.data = (void *)(p->fontdata = data); |
|
if ((p->userfont = userfont)) |
|
REFCOUNT(data)++; |
|
vc->vc_font.width = w; |
|
vc->vc_font.height = h; |
|
vc->vc_font.charcount = charcount; |
|
if (vc->vc_hi_font_mask && charcount == 256) |
|
set_vc_hi_font(vc, false); |
|
else if (!vc->vc_hi_font_mask && charcount == 512) |
|
set_vc_hi_font(vc, true); |
|
|
|
if (resize) { |
|
int cols, rows; |
|
|
|
cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
|
rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); |
|
cols /= w; |
|
rows /= h; |
|
vc_resize(vc, cols, rows); |
|
} else if (con_is_visible(vc) |
|
&& vc->vc_mode == KD_TEXT) { |
|
fbcon_clear_margins(vc, 0); |
|
update_screen(vc); |
|
} |
|
|
|
if (old_data && (--REFCOUNT(old_data) == 0)) |
|
kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); |
|
return 0; |
|
} |
|
|
|
/* |
|
* User asked to set font; we are guaranteed that |
|
* a) width and height are in range 1..32 |
|
* b) charcount does not exceed 512 |
|
* but lets not assume that, since someone might someday want to use larger |
|
* fonts. And charcount of 512 is small for unicode support. |
|
* |
|
* However, user space gives the font in 32 rows , regardless of |
|
* actual font height. So a new API is needed if support for larger fonts |
|
* is ever implemented. |
|
*/ |
|
|
|
static int fbcon_set_font(struct vc_data *vc, struct console_font *font, |
|
unsigned int flags) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
unsigned charcount = font->charcount; |
|
int w = font->width; |
|
int h = font->height; |
|
int size; |
|
int i, csum; |
|
u8 *new_data, *data = font->data; |
|
int pitch = PITCH(font->width); |
|
|
|
/* Is there a reason why fbconsole couldn't handle any charcount >256? |
|
* If not this check should be changed to charcount < 256 */ |
|
if (charcount != 256 && charcount != 512) |
|
return -EINVAL; |
|
|
|
/* Make sure drawing engine can handle the font */ |
|
if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || |
|
!(info->pixmap.blit_y & (1 << (font->height - 1)))) |
|
return -EINVAL; |
|
|
|
/* Make sure driver can handle the font length */ |
|
if (fbcon_invalid_charcount(info, charcount)) |
|
return -EINVAL; |
|
|
|
size = CALC_FONTSZ(h, pitch, charcount); |
|
|
|
new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); |
|
|
|
if (!new_data) |
|
return -ENOMEM; |
|
|
|
memset(new_data, 0, FONT_EXTRA_WORDS * sizeof(int)); |
|
|
|
new_data += FONT_EXTRA_WORDS * sizeof(int); |
|
FNTSIZE(new_data) = size; |
|
REFCOUNT(new_data) = 0; /* usage counter */ |
|
for (i=0; i< charcount; i++) { |
|
memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); |
|
} |
|
|
|
/* Since linux has a nice crc32 function use it for counting font |
|
* checksums. */ |
|
csum = crc32(0, new_data, size); |
|
|
|
FNTSUM(new_data) = csum; |
|
/* Check if the same font is on some other console already */ |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
struct vc_data *tmp = vc_cons[i].d; |
|
|
|
if (fb_display[i].userfont && |
|
fb_display[i].fontdata && |
|
FNTSUM(fb_display[i].fontdata) == csum && |
|
FNTSIZE(fb_display[i].fontdata) == size && |
|
tmp->vc_font.width == w && |
|
!memcmp(fb_display[i].fontdata, new_data, size)) { |
|
kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); |
|
new_data = (u8 *)fb_display[i].fontdata; |
|
break; |
|
} |
|
} |
|
return fbcon_do_set_font(vc, font->width, font->height, charcount, new_data, 1); |
|
} |
|
|
|
static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
const struct font_desc *f; |
|
|
|
if (!name) |
|
f = get_default_font(info->var.xres, info->var.yres, |
|
info->pixmap.blit_x, info->pixmap.blit_y); |
|
else if (!(f = find_font(name))) |
|
return -ENOENT; |
|
|
|
font->width = f->width; |
|
font->height = f->height; |
|
return fbcon_do_set_font(vc, f->width, f->height, f->charcount, f->data, 0); |
|
} |
|
|
|
static u16 palette_red[16]; |
|
static u16 palette_green[16]; |
|
static u16 palette_blue[16]; |
|
|
|
static struct fb_cmap palette_cmap = { |
|
0, 16, palette_red, palette_green, palette_blue, NULL |
|
}; |
|
|
|
static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) |
|
{ |
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; |
|
int i, j, k, depth; |
|
u8 val; |
|
|
|
if (fbcon_is_inactive(vc, info)) |
|
return; |
|
|
|
if (!con_is_visible(vc)) |
|
return; |
|
|
|
depth = fb_get_color_depth(&info->var, &info->fix); |
|
if (depth > 3) { |
|
for (i = j = 0; i < 16; i++) { |
|
k = table[i]; |
|
val = vc->vc_palette[j++]; |
|
palette_red[k] = (val << 8) | val; |
|
val = vc->vc_palette[j++]; |
|
palette_green[k] = (val << 8) | val; |
|
val = vc->vc_palette[j++]; |
|
palette_blue[k] = (val << 8) | val; |
|
} |
|
palette_cmap.len = 16; |
|
palette_cmap.start = 0; |
|
/* |
|
* If framebuffer is capable of less than 16 colors, |
|
* use default palette of fbcon. |
|
*/ |
|
} else |
|
fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); |
|
|
|
fb_set_cmap(&palette_cmap, info); |
|
} |
|
|
|
static u16 *fbcon_screen_pos(const struct vc_data *vc, int offset) |
|
{ |
|
return (u16 *) (vc->vc_origin + offset); |
|
} |
|
|
|
static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos, |
|
int *px, int *py) |
|
{ |
|
unsigned long ret; |
|
int x, y; |
|
|
|
if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { |
|
unsigned long offset = (pos - vc->vc_origin) / 2; |
|
|
|
x = offset % vc->vc_cols; |
|
y = offset / vc->vc_cols; |
|
ret = pos + (vc->vc_cols - x) * 2; |
|
} else { |
|
/* Should not happen */ |
|
x = y = 0; |
|
ret = vc->vc_origin; |
|
} |
|
if (px) |
|
*px = x; |
|
if (py) |
|
*py = y; |
|
return ret; |
|
} |
|
|
|
/* As we might be inside of softback, we may work with non-contiguous buffer, |
|
that's why we have to use a separate routine. */ |
|
static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt) |
|
{ |
|
while (cnt--) { |
|
u16 a = scr_readw(p); |
|
if (!vc->vc_can_do_color) |
|
a ^= 0x0800; |
|
else if (vc->vc_hi_font_mask == 0x100) |
|
a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | |
|
(((a) & 0x0e00) << 4); |
|
else |
|
a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | |
|
(((a) & 0x0700) << 4); |
|
scr_writew(a, p++); |
|
} |
|
} |
|
|
|
void fbcon_suspended(struct fb_info *info) |
|
{ |
|
struct vc_data *vc = NULL; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
if (!ops || ops->currcon < 0) |
|
return; |
|
vc = vc_cons[ops->currcon].d; |
|
|
|
/* Clear cursor, restore saved data */ |
|
fbcon_cursor(vc, CM_ERASE); |
|
} |
|
|
|
void fbcon_resumed(struct fb_info *info) |
|
{ |
|
struct vc_data *vc; |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
if (!ops || ops->currcon < 0) |
|
return; |
|
vc = vc_cons[ops->currcon].d; |
|
|
|
update_screen(vc); |
|
} |
|
|
|
static void fbcon_modechanged(struct fb_info *info) |
|
{ |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
struct vc_data *vc; |
|
struct fbcon_display *p; |
|
int rows, cols; |
|
|
|
if (!ops || ops->currcon < 0) |
|
return; |
|
vc = vc_cons[ops->currcon].d; |
|
if (vc->vc_mode != KD_TEXT || |
|
registered_fb[con2fb_map[ops->currcon]] != info) |
|
return; |
|
|
|
p = &fb_display[vc->vc_num]; |
|
set_blitting_type(vc, info); |
|
|
|
if (con_is_visible(vc)) { |
|
var_to_display(p, &info->var, info); |
|
cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
|
rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); |
|
cols /= vc->vc_font.width; |
|
rows /= vc->vc_font.height; |
|
vc_resize(vc, cols, rows); |
|
updatescrollmode(p, info, vc); |
|
scrollback_max = 0; |
|
scrollback_current = 0; |
|
|
|
if (!fbcon_is_inactive(vc, info)) { |
|
ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; |
|
ops->update_start(info); |
|
} |
|
|
|
fbcon_set_palette(vc, color_table); |
|
update_screen(vc); |
|
} |
|
} |
|
|
|
static void fbcon_set_all_vcs(struct fb_info *info) |
|
{ |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
struct vc_data *vc; |
|
struct fbcon_display *p; |
|
int i, rows, cols, fg = -1; |
|
|
|
if (!ops || ops->currcon < 0) |
|
return; |
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
vc = vc_cons[i].d; |
|
if (!vc || vc->vc_mode != KD_TEXT || |
|
registered_fb[con2fb_map[i]] != info) |
|
continue; |
|
|
|
if (con_is_visible(vc)) { |
|
fg = i; |
|
continue; |
|
} |
|
|
|
p = &fb_display[vc->vc_num]; |
|
set_blitting_type(vc, info); |
|
var_to_display(p, &info->var, info); |
|
cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); |
|
rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); |
|
cols /= vc->vc_font.width; |
|
rows /= vc->vc_font.height; |
|
vc_resize(vc, cols, rows); |
|
} |
|
|
|
if (fg != -1) |
|
fbcon_modechanged(info); |
|
} |
|
|
|
|
|
void fbcon_update_vcs(struct fb_info *info, bool all) |
|
{ |
|
if (all) |
|
fbcon_set_all_vcs(info); |
|
else |
|
fbcon_modechanged(info); |
|
} |
|
EXPORT_SYMBOL(fbcon_update_vcs); |
|
|
|
int fbcon_mode_deleted(struct fb_info *info, |
|
struct fb_videomode *mode) |
|
{ |
|
struct fb_info *fb_info; |
|
struct fbcon_display *p; |
|
int i, j, found = 0; |
|
|
|
/* before deletion, ensure that mode is not in use */ |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
j = con2fb_map[i]; |
|
if (j == -1) |
|
continue; |
|
fb_info = registered_fb[j]; |
|
if (fb_info != info) |
|
continue; |
|
p = &fb_display[i]; |
|
if (!p || !p->mode) |
|
continue; |
|
if (fb_mode_is_equal(p->mode, mode)) { |
|
found = 1; |
|
break; |
|
} |
|
} |
|
return found; |
|
} |
|
|
|
#ifdef CONFIG_VT_HW_CONSOLE_BINDING |
|
static void fbcon_unbind(void) |
|
{ |
|
int ret; |
|
|
|
ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, |
|
fbcon_is_default); |
|
|
|
if (!ret) |
|
fbcon_has_console_bind = 0; |
|
} |
|
#else |
|
static inline void fbcon_unbind(void) {} |
|
#endif /* CONFIG_VT_HW_CONSOLE_BINDING */ |
|
|
|
/* called with console_lock held */ |
|
void fbcon_fb_unbind(struct fb_info *info) |
|
{ |
|
int i, new_idx = -1, ret = 0; |
|
int idx = info->node; |
|
|
|
WARN_CONSOLE_UNLOCKED(); |
|
|
|
if (!fbcon_has_console_bind) |
|
return; |
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (con2fb_map[i] != idx && |
|
con2fb_map[i] != -1) { |
|
new_idx = con2fb_map[i]; |
|
break; |
|
} |
|
} |
|
|
|
if (new_idx != -1) { |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (con2fb_map[i] == idx) |
|
set_con2fb_map(i, new_idx, 0); |
|
} |
|
} else { |
|
struct fb_info *info = registered_fb[idx]; |
|
|
|
/* This is sort of like set_con2fb_map, except it maps |
|
* the consoles to no device and then releases the |
|
* oldinfo to free memory and cancel the cursor blink |
|
* timer. I can imagine this just becoming part of |
|
* set_con2fb_map where new_idx is -1 |
|
*/ |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (con2fb_map[i] == idx) { |
|
con2fb_map[i] = -1; |
|
if (!search_fb_in_map(idx)) { |
|
ret = con2fb_release_oldinfo(vc_cons[i].d, |
|
info, NULL, i, |
|
idx, 0); |
|
if (ret) { |
|
con2fb_map[i] = idx; |
|
return; |
|
} |
|
} |
|
} |
|
} |
|
fbcon_unbind(); |
|
} |
|
} |
|
|
|
/* called with console_lock held */ |
|
void fbcon_fb_unregistered(struct fb_info *info) |
|
{ |
|
int i, idx; |
|
|
|
WARN_CONSOLE_UNLOCKED(); |
|
|
|
if (deferred_takeover) |
|
return; |
|
|
|
idx = info->node; |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (con2fb_map[i] == idx) |
|
con2fb_map[i] = -1; |
|
} |
|
|
|
if (idx == info_idx) { |
|
info_idx = -1; |
|
|
|
for_each_registered_fb(i) { |
|
info_idx = i; |
|
break; |
|
} |
|
} |
|
|
|
if (info_idx != -1) { |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (con2fb_map[i] == -1) |
|
con2fb_map[i] = info_idx; |
|
} |
|
} |
|
|
|
if (primary_device == idx) |
|
primary_device = -1; |
|
|
|
if (!num_registered_fb) |
|
do_unregister_con_driver(&fb_con); |
|
} |
|
|
|
void fbcon_remap_all(struct fb_info *info) |
|
{ |
|
int i, idx = info->node; |
|
|
|
console_lock(); |
|
if (deferred_takeover) { |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) |
|
con2fb_map_boot[i] = idx; |
|
fbcon_map_override(); |
|
console_unlock(); |
|
return; |
|
} |
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) |
|
set_con2fb_map(i, idx, 0); |
|
|
|
if (con_is_bound(&fb_con)) { |
|
printk(KERN_INFO "fbcon: Remapping primary device, " |
|
"fb%i, to tty %i-%i\n", idx, |
|
first_fb_vc + 1, last_fb_vc + 1); |
|
info_idx = idx; |
|
} |
|
console_unlock(); |
|
} |
|
|
|
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY |
|
static void fbcon_select_primary(struct fb_info *info) |
|
{ |
|
if (!map_override && primary_device == -1 && |
|
fb_is_primary_device(info)) { |
|
int i; |
|
|
|
printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", |
|
info->fix.id, info->node); |
|
primary_device = info->node; |
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) |
|
con2fb_map_boot[i] = primary_device; |
|
|
|
if (con_is_bound(&fb_con)) { |
|
printk(KERN_INFO "fbcon: Remapping primary device, " |
|
"fb%i, to tty %i-%i\n", info->node, |
|
first_fb_vc + 1, last_fb_vc + 1); |
|
info_idx = primary_device; |
|
} |
|
} |
|
|
|
} |
|
#else |
|
static inline void fbcon_select_primary(struct fb_info *info) |
|
{ |
|
return; |
|
} |
|
#endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ |
|
|
|
/* called with console_lock held */ |
|
int fbcon_fb_registered(struct fb_info *info) |
|
{ |
|
int ret = 0, i, idx; |
|
|
|
WARN_CONSOLE_UNLOCKED(); |
|
|
|
idx = info->node; |
|
fbcon_select_primary(info); |
|
|
|
if (deferred_takeover) { |
|
pr_info("fbcon: Deferring console take-over\n"); |
|
return 0; |
|
} |
|
|
|
if (info_idx == -1) { |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (con2fb_map_boot[i] == idx) { |
|
info_idx = idx; |
|
break; |
|
} |
|
} |
|
|
|
if (info_idx != -1) |
|
ret = do_fbcon_takeover(1); |
|
} else { |
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (con2fb_map_boot[i] == idx) |
|
set_con2fb_map(i, idx, 0); |
|
} |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
void fbcon_fb_blanked(struct fb_info *info, int blank) |
|
{ |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
struct vc_data *vc; |
|
|
|
if (!ops || ops->currcon < 0) |
|
return; |
|
|
|
vc = vc_cons[ops->currcon].d; |
|
if (vc->vc_mode != KD_TEXT || |
|
registered_fb[con2fb_map[ops->currcon]] != info) |
|
return; |
|
|
|
if (con_is_visible(vc)) { |
|
if (blank) |
|
do_blank_screen(0); |
|
else |
|
do_unblank_screen(0); |
|
} |
|
ops->blank_state = blank; |
|
} |
|
|
|
void fbcon_new_modelist(struct fb_info *info) |
|
{ |
|
int i; |
|
struct vc_data *vc; |
|
struct fb_var_screeninfo var; |
|
const struct fb_videomode *mode; |
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
if (registered_fb[con2fb_map[i]] != info) |
|
continue; |
|
if (!fb_display[i].mode) |
|
continue; |
|
vc = vc_cons[i].d; |
|
display_to_var(&var, &fb_display[i]); |
|
mode = fb_find_nearest_mode(fb_display[i].mode, |
|
&info->modelist); |
|
fb_videomode_to_var(&var, mode); |
|
fbcon_set_disp(info, &var, vc->vc_num); |
|
} |
|
} |
|
|
|
void fbcon_get_requirement(struct fb_info *info, |
|
struct fb_blit_caps *caps) |
|
{ |
|
struct vc_data *vc; |
|
|
|
if (caps->flags) { |
|
int i, charcnt; |
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) { |
|
vc = vc_cons[i].d; |
|
if (vc && vc->vc_mode == KD_TEXT && |
|
info->node == con2fb_map[i]) { |
|
caps->x |= 1 << (vc->vc_font.width - 1); |
|
caps->y |= 1 << (vc->vc_font.height - 1); |
|
charcnt = vc->vc_font.charcount; |
|
if (caps->len < charcnt) |
|
caps->len = charcnt; |
|
} |
|
} |
|
} else { |
|
vc = vc_cons[fg_console].d; |
|
|
|
if (vc && vc->vc_mode == KD_TEXT && |
|
info->node == con2fb_map[fg_console]) { |
|
caps->x = 1 << (vc->vc_font.width - 1); |
|
caps->y = 1 << (vc->vc_font.height - 1); |
|
caps->len = vc->vc_font.charcount; |
|
} |
|
} |
|
} |
|
|
|
int fbcon_set_con2fb_map_ioctl(void __user *argp) |
|
{ |
|
struct fb_con2fbmap con2fb; |
|
int ret; |
|
|
|
if (copy_from_user(&con2fb, argp, sizeof(con2fb))) |
|
return -EFAULT; |
|
if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) |
|
return -EINVAL; |
|
if (con2fb.framebuffer >= FB_MAX) |
|
return -EINVAL; |
|
if (!registered_fb[con2fb.framebuffer]) |
|
request_module("fb%d", con2fb.framebuffer); |
|
if (!registered_fb[con2fb.framebuffer]) { |
|
return -EINVAL; |
|
} |
|
|
|
console_lock(); |
|
ret = set_con2fb_map(con2fb.console - 1, |
|
con2fb.framebuffer, 1); |
|
console_unlock(); |
|
|
|
return ret; |
|
} |
|
|
|
int fbcon_get_con2fb_map_ioctl(void __user *argp) |
|
{ |
|
struct fb_con2fbmap con2fb; |
|
|
|
if (copy_from_user(&con2fb, argp, sizeof(con2fb))) |
|
return -EFAULT; |
|
if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) |
|
return -EINVAL; |
|
|
|
console_lock(); |
|
con2fb.framebuffer = con2fb_map[con2fb.console - 1]; |
|
console_unlock(); |
|
|
|
return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; |
|
} |
|
|
|
/* |
|
* The console `switch' structure for the frame buffer based console |
|
*/ |
|
|
|
static const struct consw fb_con = { |
|
.owner = THIS_MODULE, |
|
.con_startup = fbcon_startup, |
|
.con_init = fbcon_init, |
|
.con_deinit = fbcon_deinit, |
|
.con_clear = fbcon_clear, |
|
.con_putc = fbcon_putc, |
|
.con_putcs = fbcon_putcs, |
|
.con_cursor = fbcon_cursor, |
|
.con_scroll = fbcon_scroll, |
|
.con_switch = fbcon_switch, |
|
.con_blank = fbcon_blank, |
|
.con_font_set = fbcon_set_font, |
|
.con_font_get = fbcon_get_font, |
|
.con_font_default = fbcon_set_def_font, |
|
.con_set_palette = fbcon_set_palette, |
|
.con_invert_region = fbcon_invert_region, |
|
.con_screen_pos = fbcon_screen_pos, |
|
.con_getxy = fbcon_getxy, |
|
.con_resize = fbcon_resize, |
|
.con_debug_enter = fbcon_debug_enter, |
|
.con_debug_leave = fbcon_debug_leave, |
|
}; |
|
|
|
static ssize_t store_rotate(struct device *device, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct fb_info *info; |
|
int rotate, idx; |
|
char **last = NULL; |
|
|
|
console_lock(); |
|
idx = con2fb_map[fg_console]; |
|
|
|
if (idx == -1 || registered_fb[idx] == NULL) |
|
goto err; |
|
|
|
info = registered_fb[idx]; |
|
rotate = simple_strtoul(buf, last, 0); |
|
fbcon_rotate(info, rotate); |
|
err: |
|
console_unlock(); |
|
return count; |
|
} |
|
|
|
static ssize_t store_rotate_all(struct device *device, |
|
struct device_attribute *attr,const char *buf, |
|
size_t count) |
|
{ |
|
struct fb_info *info; |
|
int rotate, idx; |
|
char **last = NULL; |
|
|
|
console_lock(); |
|
idx = con2fb_map[fg_console]; |
|
|
|
if (idx == -1 || registered_fb[idx] == NULL) |
|
goto err; |
|
|
|
info = registered_fb[idx]; |
|
rotate = simple_strtoul(buf, last, 0); |
|
fbcon_rotate_all(info, rotate); |
|
err: |
|
console_unlock(); |
|
return count; |
|
} |
|
|
|
static ssize_t show_rotate(struct device *device, |
|
struct device_attribute *attr,char *buf) |
|
{ |
|
struct fb_info *info; |
|
int rotate = 0, idx; |
|
|
|
console_lock(); |
|
idx = con2fb_map[fg_console]; |
|
|
|
if (idx == -1 || registered_fb[idx] == NULL) |
|
goto err; |
|
|
|
info = registered_fb[idx]; |
|
rotate = fbcon_get_rotate(info); |
|
err: |
|
console_unlock(); |
|
return snprintf(buf, PAGE_SIZE, "%d\n", rotate); |
|
} |
|
|
|
static ssize_t show_cursor_blink(struct device *device, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct fb_info *info; |
|
struct fbcon_ops *ops; |
|
int idx, blink = -1; |
|
|
|
console_lock(); |
|
idx = con2fb_map[fg_console]; |
|
|
|
if (idx == -1 || registered_fb[idx] == NULL) |
|
goto err; |
|
|
|
info = registered_fb[idx]; |
|
ops = info->fbcon_par; |
|
|
|
if (!ops) |
|
goto err; |
|
|
|
blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; |
|
err: |
|
console_unlock(); |
|
return snprintf(buf, PAGE_SIZE, "%d\n", blink); |
|
} |
|
|
|
static ssize_t store_cursor_blink(struct device *device, |
|
struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct fb_info *info; |
|
int blink, idx; |
|
char **last = NULL; |
|
|
|
console_lock(); |
|
idx = con2fb_map[fg_console]; |
|
|
|
if (idx == -1 || registered_fb[idx] == NULL) |
|
goto err; |
|
|
|
info = registered_fb[idx]; |
|
|
|
if (!info->fbcon_par) |
|
goto err; |
|
|
|
blink = simple_strtoul(buf, last, 0); |
|
|
|
if (blink) { |
|
fbcon_cursor_noblink = 0; |
|
fbcon_add_cursor_timer(info); |
|
} else { |
|
fbcon_cursor_noblink = 1; |
|
fbcon_del_cursor_timer(info); |
|
} |
|
|
|
err: |
|
console_unlock(); |
|
return count; |
|
} |
|
|
|
static struct device_attribute device_attrs[] = { |
|
__ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), |
|
__ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), |
|
__ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, |
|
store_cursor_blink), |
|
}; |
|
|
|
static int fbcon_init_device(void) |
|
{ |
|
int i, error = 0; |
|
|
|
fbcon_has_sysfs = 1; |
|
|
|
for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { |
|
error = device_create_file(fbcon_device, &device_attrs[i]); |
|
|
|
if (error) |
|
break; |
|
} |
|
|
|
if (error) { |
|
while (--i >= 0) |
|
device_remove_file(fbcon_device, &device_attrs[i]); |
|
|
|
fbcon_has_sysfs = 0; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER |
|
static void fbcon_register_existing_fbs(struct work_struct *work) |
|
{ |
|
int i; |
|
|
|
console_lock(); |
|
|
|
for_each_registered_fb(i) |
|
fbcon_fb_registered(registered_fb[i]); |
|
|
|
console_unlock(); |
|
} |
|
|
|
static struct notifier_block fbcon_output_nb; |
|
static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); |
|
|
|
static int fbcon_output_notifier(struct notifier_block *nb, |
|
unsigned long action, void *data) |
|
{ |
|
WARN_CONSOLE_UNLOCKED(); |
|
|
|
pr_info("fbcon: Taking over console\n"); |
|
|
|
dummycon_unregister_output_notifier(&fbcon_output_nb); |
|
deferred_takeover = false; |
|
logo_shown = FBCON_LOGO_DONTSHOW; |
|
|
|
/* We may get called in atomic context */ |
|
schedule_work(&fbcon_deferred_takeover_work); |
|
|
|
return NOTIFY_OK; |
|
} |
|
#endif |
|
|
|
static void fbcon_start(void) |
|
{ |
|
WARN_CONSOLE_UNLOCKED(); |
|
|
|
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER |
|
if (conswitchp != &dummy_con) |
|
deferred_takeover = false; |
|
|
|
if (deferred_takeover) { |
|
fbcon_output_nb.notifier_call = fbcon_output_notifier; |
|
dummycon_register_output_notifier(&fbcon_output_nb); |
|
return; |
|
} |
|
#endif |
|
|
|
if (num_registered_fb) { |
|
int i; |
|
|
|
for_each_registered_fb(i) { |
|
info_idx = i; |
|
break; |
|
} |
|
|
|
do_fbcon_takeover(0); |
|
} |
|
} |
|
|
|
static void fbcon_exit(void) |
|
{ |
|
struct fb_info *info; |
|
int i, j, mapped; |
|
|
|
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER |
|
if (deferred_takeover) { |
|
dummycon_unregister_output_notifier(&fbcon_output_nb); |
|
deferred_takeover = false; |
|
} |
|
#endif |
|
|
|
for_each_registered_fb(i) { |
|
int pending = 0; |
|
|
|
mapped = 0; |
|
info = registered_fb[i]; |
|
|
|
if (info->queue.func) |
|
pending = cancel_work_sync(&info->queue); |
|
pr_debug("fbcon: %s pending work\n", (pending ? "canceled" : "no")); |
|
|
|
for (j = first_fb_vc; j <= last_fb_vc; j++) { |
|
if (con2fb_map[j] == i) { |
|
mapped = 1; |
|
con2fb_map[j] = -1; |
|
} |
|
} |
|
|
|
if (mapped) { |
|
if (info->fbops->fb_release) |
|
info->fbops->fb_release(info, 0); |
|
module_put(info->fbops->owner); |
|
|
|
if (info->fbcon_par) { |
|
struct fbcon_ops *ops = info->fbcon_par; |
|
|
|
fbcon_del_cursor_timer(info); |
|
kfree(ops->cursor_src); |
|
kfree(ops->cursor_state.mask); |
|
kfree(info->fbcon_par); |
|
info->fbcon_par = NULL; |
|
} |
|
|
|
if (info->queue.func == fb_flashcursor) |
|
info->queue.func = NULL; |
|
} |
|
} |
|
} |
|
|
|
void __init fb_console_init(void) |
|
{ |
|
int i; |
|
|
|
console_lock(); |
|
fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, |
|
"fbcon"); |
|
|
|
if (IS_ERR(fbcon_device)) { |
|
printk(KERN_WARNING "Unable to create device " |
|
"for fbcon; errno = %ld\n", |
|
PTR_ERR(fbcon_device)); |
|
fbcon_device = NULL; |
|
} else |
|
fbcon_init_device(); |
|
|
|
for (i = 0; i < MAX_NR_CONSOLES; i++) |
|
con2fb_map[i] = -1; |
|
|
|
fbcon_start(); |
|
console_unlock(); |
|
} |
|
|
|
#ifdef MODULE |
|
|
|
static void __exit fbcon_deinit_device(void) |
|
{ |
|
int i; |
|
|
|
if (fbcon_has_sysfs) { |
|
for (i = 0; i < ARRAY_SIZE(device_attrs); i++) |
|
device_remove_file(fbcon_device, &device_attrs[i]); |
|
|
|
fbcon_has_sysfs = 0; |
|
} |
|
} |
|
|
|
void __exit fb_console_exit(void) |
|
{ |
|
console_lock(); |
|
fbcon_deinit_device(); |
|
device_destroy(fb_class, MKDEV(0, 0)); |
|
fbcon_exit(); |
|
do_unregister_con_driver(&fb_con); |
|
console_unlock(); |
|
} |
|
#endif
|
|
|