50145474f6
This (and the VGA soft scrollback) turns out to have various nasty small special cases that nobody really is willing to fight. The soft scrollback code was really useful a few decades ago when you typically used the console interactively as the main way to interact with the machine, but that just isn't the case any more. So it's not worth dragging along. Tested-by: Yuan Ming <yuanmingbuaa@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3433 lines
84 KiB
C
3433 lines
84 KiB
C
/*
|
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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 [carter@compsci.bristol.ac.uk]
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*
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* with work by William Rucklidge (wjr@cs.cornell.edu)
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* Geert Uytterhoeven
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* Jes Sorensen (jds@kom.auc.dk)
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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 (core@ggi-project.org)
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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 (jj@ultra.linux.cz)
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*
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* Random hacking by Martin Mares <mj@ucw.cz>
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*
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* 2001 - Documented with DocBook
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* - Brad Douglas <brad@neruo.com>
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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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#undef FBCONDEBUG
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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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#include "fbcon.h"
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#ifdef FBCONDEBUG
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# define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
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#else
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# define DPRINTK(fmt, args...)
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#endif
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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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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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static struct fbcon_display fb_display[MAX_NR_CONSOLES];
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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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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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#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
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static int map_override;
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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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#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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/* font data */
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static char fontname[40];
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/* current fb_info */
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static int info_idx = -1;
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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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static const struct consw fb_con;
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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_set_origin(struct vc_data *);
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static int fbcon_cursor_noblink;
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#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
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/*
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* Interface used by the world
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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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* 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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#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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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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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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if (!ops || ops->currcon == -1)
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return;
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fb_info = registered_fb[con2fb_map[ops->currcon]];
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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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fbcon_modechanged(info);
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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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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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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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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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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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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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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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/*
|
|
* 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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static void fb_flashcursor(struct work_struct *work)
|
|
{
|
|
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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/* 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;
|
|
|
|
if (ops && ops->currcon != -1)
|
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vc = vc_cons[ops->currcon].d;
|
|
|
|
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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}
|
|
|
|
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, 0, get_color(vc, info, c, 1),
|
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get_color(vc, info, c, 0));
|
|
console_unlock();
|
|
}
|
|
|
|
static void cursor_timer_handler(struct timer_list *t)
|
|
{
|
|
struct fbcon_ops *ops = from_timer(ops, t, cursor_timer);
|
|
struct fb_info *info = ops->info;
|
|
|
|
queue_work(system_power_efficient_wq, &info->queue);
|
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mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
|
|
}
|
|
|
|
static void fbcon_add_cursor_timer(struct fb_info *info)
|
|
{
|
|
struct fbcon_ops *ops = info->fbcon_par;
|
|
|
|
if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
|
|
!(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
|
|
!fbcon_cursor_noblink) {
|
|
if (!info->queue.func)
|
|
INIT_WORK(&info->queue, fb_flashcursor);
|
|
|
|
timer_setup(&ops->cursor_timer, cursor_timer_handler, 0);
|
|
mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
|
|
ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
|
|
}
|
|
}
|
|
|
|
static void fbcon_del_cursor_timer(struct fb_info *info)
|
|
{
|
|
struct fbcon_ops *ops = info->fbcon_par;
|
|
|
|
if (info->queue.func == fb_flashcursor &&
|
|
ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
|
|
del_timer_sync(&ops->cursor_timer);
|
|
ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
|
|
}
|
|
}
|
|
|
|
#ifndef MODULE
|
|
static int __init fb_console_setup(char *this_opt)
|
|
{
|
|
char *options;
|
|
int i, j;
|
|
|
|
if (!this_opt || !*this_opt)
|
|
return 1;
|
|
|
|
while ((options = strsep(&this_opt, ",")) != NULL) {
|
|
if (!strncmp(options, "font:", 5)) {
|
|
strlcpy(fontname, options + 5, sizeof(fontname));
|
|
continue;
|
|
}
|
|
|
|
if (!strncmp(options, "scrollback:", 11)) {
|
|
pr_warn("Ignoring scrollback size option\n");
|
|
continue;
|
|
}
|
|
|
|
if (!strncmp(options, "map:", 4)) {
|
|
options += 4;
|
|
if (*options) {
|
|
for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
|
|
if (!options[j])
|
|
j = 0;
|
|
con2fb_map_boot[i] =
|
|
(options[j++]-'0') % FB_MAX;
|
|
}
|
|
|
|
fbcon_map_override();
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (!strncmp(options, "vc:", 3)) {
|
|
options += 3;
|
|
if (*options)
|
|
first_fb_vc = simple_strtoul(options, &options, 10) - 1;
|
|
if (first_fb_vc < 0)
|
|
first_fb_vc = 0;
|
|
if (*options++ == '-')
|
|
last_fb_vc = simple_strtoul(options, &options, 10) - 1;
|
|
fbcon_is_default = 0;
|
|
continue;
|
|
}
|
|
|
|
if (!strncmp(options, "rotate:", 7)) {
|
|
options += 7;
|
|
if (*options)
|
|
initial_rotation = simple_strtoul(options, &options, 0);
|
|
if (initial_rotation > 3)
|
|
initial_rotation = 0;
|
|
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 = 256; /* FIXME Need to support more fonts */
|
|
} 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);
|
|
|
|
DPRINTK("mode: %s\n", info->fix.id);
|
|
DPRINTK("visual: %d\n", info->fix.visual);
|
|
DPRINTK("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, charcnt = 256;
|
|
int cap, 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]];
|
|
cap = info->flags;
|
|
|
|
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;
|
|
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 = 256; /* FIXME Need to
|
|
support more fonts */
|
|
}
|
|
}
|
|
|
|
if (p->userfont)
|
|
charcnt = FNTCHARCNT(p->fontdata);
|
|
|
|
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 (charcnt == 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;
|
|
|
|
if ((cap & FBINFO_HWACCEL_COPYAREA) &&
|
|
!(cap & FBINFO_HWACCEL_DISABLED))
|
|
p->scrollmode = SCROLL_MOVE;
|
|
else /* default to something safe */
|
|
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;
|
|
|
|
ops->cursor(vc, info, mode, 0, 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, charcnt = 256;
|
|
|
|
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;
|
|
p->userfont = t->userfont;
|
|
if (p->userfont)
|
|
REFCOUNT(p->fontdata)++;
|
|
}
|
|
if (p->userfont)
|
|
charcnt = FNTCHARCNT(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 (charcnt == 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;
|
|
break;
|
|
|
|
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;
|
|
break;
|
|
|
|
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 cap = info->flags;
|
|
u16 t = 0;
|
|
int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
|
|
info->fix.xpanstep);
|
|
int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
|
|
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);
|
|
int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
|
|
divides(ypan, vc->vc_font.height) && vyres > yres;
|
|
int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
|
|
divides(ywrap, vc->vc_font.height) &&
|
|
divides(vc->vc_font.height, vyres) &&
|
|
divides(vc->vc_font.height, yres);
|
|
int reading_fast = cap & FBINFO_READS_FAST;
|
|
int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
|
|
!(cap & FBINFO_HWACCEL_DISABLED);
|
|
int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
|
|
!(cap & FBINFO_HWACCEL_DISABLED);
|
|
|
|
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--;
|
|
|
|
if (good_wrap || good_pan) {
|
|
if (reading_fast || fast_copyarea)
|
|
p->scrollmode = good_wrap ?
|
|
SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
|
|
else
|
|
p->scrollmode = good_wrap ? SCROLL_REDRAW :
|
|
SCROLL_PAN_REDRAW;
|
|
} else {
|
|
if (reading_fast || (fast_copyarea && !fast_imageblit))
|
|
p->scrollmode = SCROLL_MOVE;
|
|
else
|
|
p->scrollmode = SCROLL_REDRAW;
|
|
}
|
|
}
|
|
|
|
#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 (ops->p && ops->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, FNTCHARCNT(vc->vc_font.data));
|
|
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;
|
|
|
|
DPRINTK("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;
|
|
|
|
DPRINTK("resize now %ix%i\n", var.xres, var.yres);
|
|
if (con_is_visible(vc)) {
|
|
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, charcnt = 256;
|
|
|
|
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 (p->userfont)
|
|
charcnt = FNTCHARCNT(vc->vc_font.data);
|
|
|
|
if (charcnt > 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;
|
|
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;
|
|
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) {
|
|
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;
|
|
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,
|
|
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;
|
|
int cnt;
|
|
char *old_data = NULL;
|
|
|
|
resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
|
|
if (p->userfont)
|
|
old_data = vc->vc_font.data;
|
|
if (userfont)
|
|
cnt = FNTCHARCNT(data);
|
|
else
|
|
cnt = 256;
|
|
vc->vc_font.data = (void *)(p->fontdata = data);
|
|
if ((p->userfont = userfont))
|
|
REFCOUNT(data)++;
|
|
vc->vc_font.width = w;
|
|
vc->vc_font.height = h;
|
|
if (vc->vc_hi_font_mask && cnt == 256)
|
|
set_vc_hi_font(vc, false);
|
|
else if (!vc->vc_hi_font_mask && cnt == 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;
|
|
}
|
|
|
|
static int fbcon_copy_font(struct vc_data *vc, int con)
|
|
{
|
|
struct fbcon_display *od = &fb_display[con];
|
|
struct console_font *f = &vc->vc_font;
|
|
|
|
if (od->fontdata == f->data)
|
|
return 0; /* already the same font... */
|
|
return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
new_data += FONT_EXTRA_WORDS * sizeof(int);
|
|
FNTSIZE(new_data) = size;
|
|
FNTCHARCNT(new_data) = charcount;
|
|
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, 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->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(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++);
|
|
}
|
|
}
|
|
|
|
static int fbcon_set_origin(struct vc_data *vc)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
struct fbcon_display *p;
|
|
|
|
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]) {
|
|
p = &fb_display[i];
|
|
caps->x |= 1 << (vc->vc_font.width - 1);
|
|
caps->y |= 1 << (vc->vc_font.height - 1);
|
|
charcnt = (p->userfont) ?
|
|
FNTCHARCNT(p->fontdata) : 256;
|
|
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]) {
|
|
p = &fb_display[fg_console];
|
|
caps->x = 1 << (vc->vc_font.width - 1);
|
|
caps->y = 1 << (vc->vc_font.height - 1);
|
|
caps->len = (p->userfont) ?
|
|
FNTCHARCNT(p->fontdata) : 256;
|
|
}
|
|
}
|
|
}
|
|
|
|
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_font_copy = fbcon_copy_font,
|
|
.con_set_palette = fbcon_set_palette,
|
|
.con_set_origin = fbcon_set_origin,
|
|
.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);
|
|
DPRINTK("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
|