f317ff9eed
Pull workqueue changes from Tejun Heo: "Surprisingly, Lai and I didn't break too many things implementing custom pools and stuff last time around and there aren't any follow-up changes necessary at this point. The only change in this pull request is Viresh's patches to make some per-cpu workqueues to behave as unbound workqueues dependent on a boot param whose default can be configured via a config option. This leads to higher processing overhead / lower bandwidth as more work items are bounced across CPUs; however, it can lead to noticeable powersave in certain configurations - ~10% w/ idlish constant workload on a big.LITTLE configuration according to Viresh. This is because per-cpu workqueues interfere with how the scheduler perceives whether or not each CPU is idle by forcing pinned tasks on them, which makes the scheduler's power-aware scheduling decisions less effective. Its effectiveness is likely less pronounced on homogenous configurations and this type of optimization can probably be made automatic; however, the changes are pretty minimal and the affected workqueues are clearly marked, so it's an easy gain for some configurations for the time being with pretty unintrusive changes." * 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: fbcon: queue work on power efficient wq block: queue work on power efficient wq PHYLIB: queue work on system_power_efficient_wq workqueue: Add system wide power_efficient workqueues workqueues: Introduce new flag WQ_POWER_EFFICIENT for power oriented workqueues
3632 lines
88 KiB
C
3632 lines
88 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/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 <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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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 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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/* Software scrollback */
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static int fbcon_softback_size = 32768;
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static unsigned long softback_buf, softback_curr;
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static unsigned long softback_in;
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static unsigned long softback_top, softback_end;
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static int softback_lines;
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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 fbcon_has_exited;
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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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/* 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;
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static int fbcon_has_sysfs;
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static const struct consw fb_con;
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#define CM_SOFTBACK (8)
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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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#define CURSOR_DRAW_DELAY (1)
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static int vbl_cursor_cnt;
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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 int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
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int count);
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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 int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
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static int fbcon_scrolldelta(struct vc_data *vc, int lines);
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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 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 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 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 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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!vt_force_oops_output(vc);
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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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/*
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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 fbcon_update_softback(struct vc_data *vc)
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{
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int l = fbcon_softback_size / vc->vc_size_row;
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|
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if (l > 5)
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softback_end = softback_buf + l * vc->vc_size_row;
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else
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/* Smaller scrollback makes no sense, and 0 would screw
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the operation totally */
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softback_top = 0;
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}
|
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|
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static void fb_flashcursor(struct work_struct *work)
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{
|
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struct fb_info *info = container_of(work, struct fb_info, queue);
|
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struct fbcon_ops *ops = info->fbcon_par;
|
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struct vc_data *vc = NULL;
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int c;
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int mode;
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int ret;
|
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|
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/* FIXME: we should sort out the unbind locking instead */
|
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/* instead we just fail to flash the cursor if we can't get
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* the lock instead of blocking fbcon deinit */
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ret = console_trylock();
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if (ret == 0)
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return;
|
|
|
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if (ops && ops->currcon != -1)
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vc = vc_cons[ops->currcon].d;
|
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|
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if (!vc || !CON_IS_VISIBLE(vc) ||
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registered_fb[con2fb_map[vc->vc_num]] != info ||
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vc->vc_deccm != 1) {
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console_unlock();
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return;
|
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}
|
|
|
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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, softback_lines, get_color(vc, info, c, 1),
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get_color(vc, info, c, 0));
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console_unlock();
|
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}
|
|
|
|
static void cursor_timer_handler(unsigned long dev_addr)
|
|
{
|
|
struct fb_info *info = (struct fb_info *) dev_addr;
|
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struct fbcon_ops *ops = info->fbcon_par;
|
|
|
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queue_work(system_power_efficient_wq, &info->queue);
|
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mod_timer(&ops->cursor_timer, jiffies + HZ/5);
|
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}
|
|
|
|
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);
|
|
|
|
init_timer(&ops->cursor_timer);
|
|
ops->cursor_timer.function = cursor_timer_handler;
|
|
ops->cursor_timer.expires = jiffies + HZ / 5;
|
|
ops->cursor_timer.data = (unsigned long ) info;
|
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add_timer(&ops->cursor_timer);
|
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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));
|
|
|
|
if (!strncmp(options, "scrollback:", 11)) {
|
|
options += 11;
|
|
if (*options) {
|
|
fbcon_softback_size = simple_strtoul(options, &options, 0);
|
|
if (*options == 'k' || *options == 'K') {
|
|
fbcon_softback_size *= 1024;
|
|
options++;
|
|
}
|
|
if (*options != ',')
|
|
return 1;
|
|
options++;
|
|
} else
|
|
return 1;
|
|
}
|
|
|
|
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();
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
if (!strncmp(options, "rotate:", 7)) {
|
|
options += 7;
|
|
if (*options)
|
|
initial_rotation = simple_strtoul(options, &options, 0);
|
|
if (initial_rotation > 3)
|
|
initial_rotation = 0;
|
|
}
|
|
}
|
|
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->flags & FBINFO_MODULE) {
|
|
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(logo_lines * new_cols * 2, GFP_KERNEL);
|
|
if (save) {
|
|
int i = cols < new_cols ? cols : new_cols;
|
|
scr_memsetw(save, erase, 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->vc_y + logo_lines >= rows)
|
|
lines = rows - vc->vc_y - 1;
|
|
else
|
|
lines = logo_lines;
|
|
vc->vc_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, logo_lines * new_cols * 2);
|
|
vc->vc_y += logo_lines;
|
|
vc->vc_pos += logo_lines * vc->vc_size_row;
|
|
kfree(save);
|
|
}
|
|
|
|
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 if (logo_shown != FBCON_LOGO_DONTSHOW) {
|
|
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) {
|
|
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->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->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;
|
|
|
|
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 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 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 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;
|
|
info->fbcon_par = ops;
|
|
p->con_rotate = initial_rotation;
|
|
set_blitting_type(vc, info);
|
|
|
|
if (info->fix.type != FB_TYPE_TEXT) {
|
|
if (fbcon_softback_size) {
|
|
if (!softback_buf) {
|
|
softback_buf =
|
|
(unsigned long)
|
|
kmalloc(fbcon_softback_size,
|
|
GFP_KERNEL);
|
|
if (!softback_buf) {
|
|
fbcon_softback_size = 0;
|
|
softback_top = 0;
|
|
}
|
|
}
|
|
} else {
|
|
if (softback_buf) {
|
|
kfree((void *) softback_buf);
|
|
softback_buf = 0;
|
|
softback_top = 0;
|
|
}
|
|
}
|
|
if (softback_buf)
|
|
softback_in = softback_top = softback_curr =
|
|
softback_buf;
|
|
softback_lines = 0;
|
|
}
|
|
|
|
/* 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);
|
|
fbcon_has_exited = 0;
|
|
return display_desc;
|
|
}
|
|
|
|
static void fbcon_init(struct vc_data *vc, int init)
|
|
{
|
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
|
|
struct fbcon_ops *ops;
|
|
struct vc_data **default_mode = vc->vc_display_fg;
|
|
struct vc_data *svc = *default_mode;
|
|
struct display *t, *p = &fb_display[vc->vc_num];
|
|
int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
|
|
int cap, ret;
|
|
|
|
if (info_idx == -1 || info == NULL)
|
|
return;
|
|
|
|
cap = info->flags;
|
|
|
|
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_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT);
|
|
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;
|
|
p->con_rotate = initial_rotation;
|
|
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 (vc == svc && softback_buf)
|
|
fbcon_update_softback(vc);
|
|
|
|
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 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 fbcon_deinit(struct vc_data *vc)
|
|
{
|
|
struct 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 (!con_is_bound(&fb_con))
|
|
fbcon_exit();
|
|
|
|
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 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 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, 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 y;
|
|
int c = scr_readw((u16 *) vc->vc_pos);
|
|
|
|
if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
|
|
return;
|
|
|
|
if (vc->vc_cursor_type & 0x10)
|
|
fbcon_del_cursor_timer(info);
|
|
else
|
|
fbcon_add_cursor_timer(info);
|
|
|
|
ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
|
|
if (mode & CM_SOFTBACK) {
|
|
mode &= ~CM_SOFTBACK;
|
|
y = softback_lines;
|
|
} else {
|
|
if (softback_lines)
|
|
fbcon_set_origin(vc);
|
|
y = 0;
|
|
}
|
|
|
|
ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
|
|
get_color(vc, info, c, 0));
|
|
vbl_cursor_cnt = CURSOR_DRAW_DELAY;
|
|
}
|
|
|
|
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 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);
|
|
if (softback_buf)
|
|
fbcon_update_softback(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 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 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 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 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 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 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_softback(struct vc_data *vc, struct display *p,
|
|
long delta)
|
|
{
|
|
int count = vc->vc_rows;
|
|
unsigned short *d, *s;
|
|
unsigned long n;
|
|
int line = 0;
|
|
|
|
d = (u16 *) softback_curr;
|
|
if (d == (u16 *) softback_in)
|
|
d = (u16 *) vc->vc_origin;
|
|
n = softback_curr + delta * vc->vc_size_row;
|
|
softback_lines -= delta;
|
|
if (delta < 0) {
|
|
if (softback_curr < softback_top && n < softback_buf) {
|
|
n += softback_end - softback_buf;
|
|
if (n < softback_top) {
|
|
softback_lines -=
|
|
(softback_top - n) / vc->vc_size_row;
|
|
n = softback_top;
|
|
}
|
|
} else if (softback_curr >= softback_top
|
|
&& n < softback_top) {
|
|
softback_lines -=
|
|
(softback_top - n) / vc->vc_size_row;
|
|
n = softback_top;
|
|
}
|
|
} else {
|
|
if (softback_curr > softback_in && n >= softback_end) {
|
|
n += softback_buf - softback_end;
|
|
if (n > softback_in) {
|
|
n = softback_in;
|
|
softback_lines = 0;
|
|
}
|
|
} else if (softback_curr <= softback_in && n > softback_in) {
|
|
n = softback_in;
|
|
softback_lines = 0;
|
|
}
|
|
}
|
|
if (n == softback_curr)
|
|
return;
|
|
softback_curr = n;
|
|
s = (u16 *) softback_curr;
|
|
if (s == (u16 *) softback_in)
|
|
s = (u16 *) vc->vc_origin;
|
|
while (count--) {
|
|
unsigned short *start;
|
|
unsigned short *le;
|
|
unsigned short c;
|
|
int x = 0;
|
|
unsigned short attr = 1;
|
|
|
|
start = s;
|
|
le = advance_row(s, 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++;
|
|
}
|
|
}
|
|
s++;
|
|
d++;
|
|
} while (s < le);
|
|
if (s > start)
|
|
fbcon_putcs(vc, start, s - start, line, x);
|
|
line++;
|
|
if (d == (u16 *) softback_end)
|
|
d = (u16 *) softback_buf;
|
|
if (d == (u16 *) softback_in)
|
|
d = (u16 *) vc->vc_origin;
|
|
if (s == (u16 *) softback_end)
|
|
s = (u16 *) softback_buf;
|
|
if (s == (u16 *) softback_in)
|
|
s = (u16 *) vc->vc_origin;
|
|
}
|
|
}
|
|
|
|
static void fbcon_redraw_move(struct vc_data *vc, struct 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 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 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 inline void fbcon_softback_note(struct vc_data *vc, int t,
|
|
int count)
|
|
{
|
|
unsigned short *p;
|
|
|
|
if (vc->vc_num != fg_console)
|
|
return;
|
|
p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
|
|
|
|
while (count) {
|
|
scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
|
|
count--;
|
|
p = advance_row(p, 1);
|
|
softback_in += vc->vc_size_row;
|
|
if (softback_in == softback_end)
|
|
softback_in = softback_buf;
|
|
if (softback_in == softback_top) {
|
|
softback_top += vc->vc_size_row;
|
|
if (softback_top == softback_end)
|
|
softback_top = softback_buf;
|
|
}
|
|
}
|
|
softback_curr = softback_in;
|
|
}
|
|
|
|
static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
|
|
int count)
|
|
{
|
|
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
|
|
struct display *p = &fb_display[vc->vc_num];
|
|
int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
|
|
|
|
if (fbcon_is_inactive(vc, info))
|
|
return -EINVAL;
|
|
|
|
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 (softback_top)
|
|
fbcon_softback_note(vc, t, count);
|
|
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 1;
|
|
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 1;
|
|
}
|
|
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 1;
|
|
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 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
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 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 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 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;
|
|
}
|
|
}
|
|
|
|
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 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;
|
|
|
|
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 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 (softback_top) {
|
|
if (softback_lines)
|
|
fbcon_set_origin(vc);
|
|
softback_top = softback_curr = softback_in = softback_buf;
|
|
softback_lines = 0;
|
|
fbcon_update_softback(vc);
|
|
}
|
|
|
|
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 (i = 0; i < FB_MAX; i++) {
|
|
if (registered_fb[i] != NULL && 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)
|
|
{
|
|
struct fb_event event;
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
if (!lock_fb_info(info))
|
|
return;
|
|
event.info = info;
|
|
event.data = ␣
|
|
fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
|
|
unlock_fb_info(info);
|
|
}
|
|
|
|
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_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 (!(info->flags & FBINFO_MISC_USEREVENT))
|
|
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;
|
|
}
|
|
|
|
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 display *p = &fb_display[vc->vc_num];
|
|
int resize;
|
|
int cnt;
|
|
char *old_data = NULL;
|
|
|
|
if (CON_IS_VISIBLE(vc) && softback_lines)
|
|
fbcon_set_origin(vc);
|
|
|
|
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) {
|
|
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 if (!vc->vc_hi_font_mask && cnt == 512) {
|
|
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;
|
|
}
|
|
|
|
}
|
|
|
|
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);
|
|
if (CON_IS_VISIBLE(vc) && softback_buf)
|
|
fbcon_update_softback(vc);
|
|
} 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 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 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 = (font->width+7) >> 3;
|
|
|
|
/* 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 = 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 int fbcon_set_palette(struct vc_data *vc, 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 -EINVAL;
|
|
|
|
if (!CON_IS_VISIBLE(vc))
|
|
return 0;
|
|
|
|
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);
|
|
|
|
return fb_set_cmap(&palette_cmap, info);
|
|
}
|
|
|
|
static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
|
|
{
|
|
unsigned long p;
|
|
int line;
|
|
|
|
if (vc->vc_num != fg_console || !softback_lines)
|
|
return (u16 *) (vc->vc_origin + offset);
|
|
line = offset / vc->vc_size_row;
|
|
if (line >= softback_lines)
|
|
return (u16 *) (vc->vc_origin + offset -
|
|
softback_lines * vc->vc_size_row);
|
|
p = softback_curr + offset;
|
|
if (p >= softback_end)
|
|
p += softback_buf - softback_end;
|
|
return (u16 *) p;
|
|
}
|
|
|
|
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;
|
|
if (vc->vc_num == fg_console)
|
|
y += softback_lines;
|
|
ret = pos + (vc->vc_cols - x) * 2;
|
|
} else if (vc->vc_num == fg_console && softback_lines) {
|
|
unsigned long offset = pos - softback_curr;
|
|
|
|
if (pos < softback_curr)
|
|
offset += softback_end - softback_buf;
|
|
offset /= 2;
|
|
x = offset % vc->vc_cols;
|
|
y = offset / vc->vc_cols;
|
|
ret = pos + (vc->vc_cols - x) * 2;
|
|
if (ret == softback_end)
|
|
ret = softback_buf;
|
|
if (ret == softback_in)
|
|
ret = vc->vc_origin;
|
|
} 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++);
|
|
if (p == (u16 *) softback_end)
|
|
p = (u16 *) softback_buf;
|
|
if (p == (u16 *) softback_in)
|
|
p = (u16 *) vc->vc_origin;
|
|
}
|
|
}
|
|
|
|
static int fbcon_scrolldelta(struct vc_data *vc, int lines)
|
|
{
|
|
struct fb_info *info = registered_fb[con2fb_map[fg_console]];
|
|
struct fbcon_ops *ops = info->fbcon_par;
|
|
struct display *disp = &fb_display[fg_console];
|
|
int offset, limit, scrollback_old;
|
|
|
|
if (softback_top) {
|
|
if (vc->vc_num != fg_console)
|
|
return 0;
|
|
if (vc->vc_mode != KD_TEXT || !lines)
|
|
return 0;
|
|
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;
|
|
if (logo_shown == vc->vc_num) {
|
|
unsigned long p, q;
|
|
int i;
|
|
|
|
p = softback_in;
|
|
q = vc->vc_origin +
|
|
logo_lines * vc->vc_size_row;
|
|
for (i = 0; i < logo_lines; i++) {
|
|
if (p == softback_top)
|
|
break;
|
|
if (p == softback_buf)
|
|
p = softback_end;
|
|
p -= vc->vc_size_row;
|
|
q -= vc->vc_size_row;
|
|
scr_memcpyw((u16 *) q, (u16 *) p,
|
|
vc->vc_size_row);
|
|
}
|
|
softback_in = softback_curr = p;
|
|
update_region(vc, vc->vc_origin,
|
|
logo_lines * vc->vc_cols);
|
|
}
|
|
logo_shown = FBCON_LOGO_CANSHOW;
|
|
}
|
|
fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
|
|
fbcon_redraw_softback(vc, disp, lines);
|
|
fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
|
|
return 0;
|
|
}
|
|
|
|
if (!scrollback_phys_max)
|
|
return -ENOSYS;
|
|
|
|
scrollback_old = scrollback_current;
|
|
scrollback_current -= lines;
|
|
if (scrollback_current < 0)
|
|
scrollback_current = 0;
|
|
else if (scrollback_current > scrollback_max)
|
|
scrollback_current = scrollback_max;
|
|
if (scrollback_current == scrollback_old)
|
|
return 0;
|
|
|
|
if (fbcon_is_inactive(vc, info))
|
|
return 0;
|
|
|
|
fbcon_cursor(vc, CM_ERASE);
|
|
|
|
offset = disp->yscroll - scrollback_current;
|
|
limit = disp->vrows;
|
|
switch (disp->scrollmode) {
|
|
case SCROLL_WRAP_MOVE:
|
|
info->var.vmode |= FB_VMODE_YWRAP;
|
|
break;
|
|
case SCROLL_PAN_MOVE:
|
|
case SCROLL_PAN_REDRAW:
|
|
limit -= vc->vc_rows;
|
|
info->var.vmode &= ~FB_VMODE_YWRAP;
|
|
break;
|
|
}
|
|
if (offset < 0)
|
|
offset += limit;
|
|
else if (offset >= limit)
|
|
offset -= limit;
|
|
|
|
ops->var.xoffset = 0;
|
|
ops->var.yoffset = offset * vc->vc_font.height;
|
|
ops->update_start(info);
|
|
|
|
if (!scrollback_current)
|
|
fbcon_cursor(vc, CM_DRAW);
|
|
return 0;
|
|
}
|
|
|
|
static int fbcon_set_origin(struct vc_data *vc)
|
|
{
|
|
if (softback_lines)
|
|
fbcon_scrolldelta(vc, softback_lines);
|
|
return 0;
|
|
}
|
|
|
|
static 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);
|
|
}
|
|
|
|
static 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 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);
|
|
if (softback_buf)
|
|
fbcon_update_softback(vc);
|
|
}
|
|
}
|
|
|
|
static void fbcon_set_all_vcs(struct fb_info *info)
|
|
{
|
|
struct fbcon_ops *ops = info->fbcon_par;
|
|
struct vc_data *vc;
|
|
struct 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);
|
|
}
|
|
|
|
static int fbcon_mode_deleted(struct fb_info *info,
|
|
struct fb_videomode *mode)
|
|
{
|
|
struct fb_info *fb_info;
|
|
struct 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 int 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;
|
|
|
|
return ret;
|
|
}
|
|
#else
|
|
static inline int fbcon_unbind(void)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif /* CONFIG_VT_HW_CONSOLE_BINDING */
|
|
|
|
/* called with console_lock held */
|
|
static int fbcon_fb_unbind(int idx)
|
|
{
|
|
int i, new_idx = -1, ret = 0;
|
|
|
|
if (!fbcon_has_console_bind)
|
|
return 0;
|
|
|
|
for (i = first_fb_vc; i <= last_fb_vc; i++) {
|
|
if (con2fb_map[i] != idx &&
|
|
con2fb_map[i] != -1) {
|
|
new_idx = 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
|
|
ret = fbcon_unbind();
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* called with console_lock held */
|
|
static int fbcon_fb_unregistered(struct fb_info *info)
|
|
{
|
|
int i, idx;
|
|
|
|
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 (i = 0; i < FB_MAX; i++) {
|
|
if (registered_fb[i] != NULL) {
|
|
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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* called with console_lock held */
|
|
static void fbcon_remap_all(int idx)
|
|
{
|
|
int i;
|
|
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;
|
|
}
|
|
}
|
|
|
|
#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 */
|
|
static int fbcon_fb_registered(struct fb_info *info)
|
|
{
|
|
int ret = 0, i, idx;
|
|
|
|
idx = info->node;
|
|
fbcon_select_primary(info);
|
|
|
|
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;
|
|
}
|
|
|
|
static 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;
|
|
}
|
|
|
|
static 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);
|
|
}
|
|
}
|
|
|
|
static void fbcon_get_requirement(struct fb_info *info,
|
|
struct fb_blit_caps *caps)
|
|
{
|
|
struct vc_data *vc;
|
|
struct 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int fbcon_event_notify(struct notifier_block *self,
|
|
unsigned long action, void *data)
|
|
{
|
|
struct fb_event *event = data;
|
|
struct fb_info *info = event->info;
|
|
struct fb_videomode *mode;
|
|
struct fb_con2fbmap *con2fb;
|
|
struct fb_blit_caps *caps;
|
|
int idx, ret = 0;
|
|
|
|
/*
|
|
* ignore all events except driver registration and deregistration
|
|
* if fbcon is not active
|
|
*/
|
|
if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
|
|
action == FB_EVENT_FB_UNREGISTERED))
|
|
goto done;
|
|
|
|
switch(action) {
|
|
case FB_EVENT_SUSPEND:
|
|
fbcon_suspended(info);
|
|
break;
|
|
case FB_EVENT_RESUME:
|
|
fbcon_resumed(info);
|
|
break;
|
|
case FB_EVENT_MODE_CHANGE:
|
|
fbcon_modechanged(info);
|
|
break;
|
|
case FB_EVENT_MODE_CHANGE_ALL:
|
|
fbcon_set_all_vcs(info);
|
|
break;
|
|
case FB_EVENT_MODE_DELETE:
|
|
mode = event->data;
|
|
ret = fbcon_mode_deleted(info, mode);
|
|
break;
|
|
case FB_EVENT_FB_UNBIND:
|
|
idx = info->node;
|
|
ret = fbcon_fb_unbind(idx);
|
|
break;
|
|
case FB_EVENT_FB_REGISTERED:
|
|
ret = fbcon_fb_registered(info);
|
|
break;
|
|
case FB_EVENT_FB_UNREGISTERED:
|
|
ret = fbcon_fb_unregistered(info);
|
|
break;
|
|
case FB_EVENT_SET_CONSOLE_MAP:
|
|
/* called with console lock held */
|
|
con2fb = event->data;
|
|
ret = set_con2fb_map(con2fb->console - 1,
|
|
con2fb->framebuffer, 1);
|
|
break;
|
|
case FB_EVENT_GET_CONSOLE_MAP:
|
|
con2fb = event->data;
|
|
con2fb->framebuffer = con2fb_map[con2fb->console - 1];
|
|
break;
|
|
case FB_EVENT_BLANK:
|
|
fbcon_fb_blanked(info, *(int *)event->data);
|
|
break;
|
|
case FB_EVENT_NEW_MODELIST:
|
|
fbcon_new_modelist(info);
|
|
break;
|
|
case FB_EVENT_GET_REQ:
|
|
caps = event->data;
|
|
fbcon_get_requirement(info, caps);
|
|
break;
|
|
case FB_EVENT_REMAP_ALL_CONSOLE:
|
|
idx = info->node;
|
|
fbcon_remap_all(idx);
|
|
break;
|
|
}
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* 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_bmove = fbcon_bmove,
|
|
.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_scrolldelta = fbcon_scrolldelta,
|
|
.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 struct notifier_block fbcon_event_notifier = {
|
|
.notifier_call = fbcon_event_notify,
|
|
};
|
|
|
|
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;
|
|
|
|
if (fbcon_has_exited)
|
|
return count;
|
|
|
|
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;
|
|
|
|
if (fbcon_has_exited)
|
|
return count;
|
|
|
|
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;
|
|
|
|
if (fbcon_has_exited)
|
|
return 0;
|
|
|
|
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;
|
|
|
|
if (fbcon_has_exited)
|
|
return 0;
|
|
|
|
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;
|
|
|
|
if (fbcon_has_exited)
|
|
return count;
|
|
|
|
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;
|
|
}
|
|
|
|
static void fbcon_start(void)
|
|
{
|
|
if (num_registered_fb) {
|
|
int i;
|
|
|
|
console_lock();
|
|
|
|
for (i = 0; i < FB_MAX; i++) {
|
|
if (registered_fb[i] != NULL) {
|
|
info_idx = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
do_fbcon_takeover(0);
|
|
console_unlock();
|
|
|
|
}
|
|
}
|
|
|
|
static void fbcon_exit(void)
|
|
{
|
|
struct fb_info *info;
|
|
int i, j, mapped;
|
|
|
|
if (fbcon_has_exited)
|
|
return;
|
|
|
|
kfree((void *)softback_buf);
|
|
softback_buf = 0UL;
|
|
|
|
for (i = 0; i < FB_MAX; i++) {
|
|
int pending = 0;
|
|
|
|
mapped = 0;
|
|
info = registered_fb[i];
|
|
|
|
if (info == NULL)
|
|
continue;
|
|
|
|
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;
|
|
}
|
|
|
|
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(info->fbcon_par);
|
|
info->fbcon_par = NULL;
|
|
}
|
|
|
|
if (info->queue.func == fb_flashcursor)
|
|
info->queue.func = NULL;
|
|
}
|
|
}
|
|
|
|
fbcon_has_exited = 1;
|
|
}
|
|
|
|
static int __init fb_console_init(void)
|
|
{
|
|
int i;
|
|
|
|
console_lock();
|
|
fb_register_client(&fbcon_event_notifier);
|
|
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;
|
|
|
|
console_unlock();
|
|
fbcon_start();
|
|
return 0;
|
|
}
|
|
|
|
module_init(fb_console_init);
|
|
|
|
#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;
|
|
}
|
|
}
|
|
|
|
static void __exit fb_console_exit(void)
|
|
{
|
|
console_lock();
|
|
fb_unregister_client(&fbcon_event_notifier);
|
|
fbcon_deinit_device();
|
|
device_destroy(fb_class, MKDEV(0, 0));
|
|
fbcon_exit();
|
|
do_unregister_con_driver(&fb_con);
|
|
console_unlock();
|
|
}
|
|
|
|
module_exit(fb_console_exit);
|
|
|
|
#endif
|
|
|
|
MODULE_LICENSE("GPL");
|