2 * linux/include/linux/console.h
4 * Copyright (C) 1993 Hamish Macdonald
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive
11 * 10-Mar-94: Arno Griffioen: Conversion for vt100 emulator port from PC LINUX
14 #ifndef _LINUX_CONSOLE_H_
15 #define _LINUX_CONSOLE_H_ 1
17 #include <linux/types.h>
20 struct console_font_op
;
26 * this is what the terminal answers to a ESC-Z or csi0c query.
28 #define VT100ID "\033[?1;2c"
29 #define VT102ID "\033[?6c"
33 const char *(*con_startup
)(void);
34 void (*con_init
)(struct vc_data
*, int);
35 void (*con_deinit
)(struct vc_data
*);
36 void (*con_clear
)(struct vc_data
*, int, int, int, int);
37 void (*con_putc
)(struct vc_data
*, int, int, int);
38 void (*con_putcs
)(struct vc_data
*, const unsigned short *, int, int, int);
39 void (*con_cursor
)(struct vc_data
*, int);
40 int (*con_scroll
)(struct vc_data
*, int, int, int, int);
41 void (*con_bmove
)(struct vc_data
*, int, int, int, int, int, int);
42 int (*con_switch
)(struct vc_data
*);
43 int (*con_blank
)(struct vc_data
*, int, int);
44 int (*con_font_set
)(struct vc_data
*, struct console_font
*, unsigned);
45 int (*con_font_get
)(struct vc_data
*, struct console_font
*);
46 int (*con_font_default
)(struct vc_data
*, struct console_font
*, char *);
47 int (*con_font_copy
)(struct vc_data
*, int);
48 int (*con_resize
)(struct vc_data
*, unsigned int, unsigned int,
50 int (*con_set_palette
)(struct vc_data
*, unsigned char *);
51 int (*con_scrolldelta
)(struct vc_data
*, int);
52 int (*con_set_origin
)(struct vc_data
*);
53 void (*con_save_screen
)(struct vc_data
*);
54 u8 (*con_build_attr
)(struct vc_data
*, u8
, u8
, u8
, u8
, u8
, u8
);
55 void (*con_invert_region
)(struct vc_data
*, u16
*, int);
56 u16
*(*con_screen_pos
)(struct vc_data
*, int);
57 unsigned long (*con_getxy
)(struct vc_data
*, unsigned long, int *, int *);
60 extern const struct consw
*conswitchp
;
62 extern const struct consw dummy_con
; /* dummy console buffer */
63 extern const struct consw vga_con
; /* VGA text console */
64 extern const struct consw newport_con
; /* SGI Newport console */
65 extern const struct consw prom_con
; /* SPARC PROM console */
67 int con_is_bound(const struct consw
*csw
);
68 int register_con_driver(const struct consw
*csw
, int first
, int last
);
69 int unregister_con_driver(const struct consw
*csw
);
70 int take_over_console(const struct consw
*sw
, int first
, int last
, int deflt
);
71 void give_up_console(const struct consw
*sw
);
82 * The interface for a console, or any other device that wants to capture
83 * console messages (printer driver?)
85 * If a console driver is marked CON_BOOT then it will be auto-unregistered
86 * when the first real console is registered. This is for early-printk drivers.
89 #define CON_PRINTBUFFER (1)
90 #define CON_CONSDEV (2) /* Last on the command line */
91 #define CON_ENABLED (4)
93 #define CON_ANYTIME (16) /* Safe to call when cpu is offline */
94 #define CON_BRL (32) /* Used for a braille device */
98 void (*write
)(struct console
*, const char *, unsigned);
99 int (*read
)(struct console
*, char *, unsigned);
100 struct tty_driver
*(*device
)(struct console
*, int *);
101 void (*unblank
)(void);
102 int (*setup
)(struct console
*, char *);
103 int (*early_setup
)(void);
108 struct console
*next
;
111 extern int console_set_on_cmdline
;
113 extern int add_preferred_console(char *name
, int idx
, char *options
);
114 extern int update_console_cmdline(char *name
, int idx
, char *name_new
, int idx_new
, char *options
);
115 extern void register_console(struct console
*);
116 extern int unregister_console(struct console
*);
117 extern struct console
*console_drivers
;
118 extern void acquire_console_sem(void);
119 extern int try_acquire_console_sem(void);
120 extern void release_console_sem(void);
121 extern void console_conditional_schedule(void);
122 extern void console_unblank(void);
123 extern struct tty_driver
*console_device(int *);
124 extern void console_stop(struct console
*);
125 extern void console_start(struct console
*);
126 extern int is_console_locked(void);
127 extern int braille_register_console(struct console
*, int index
,
128 char *console_options
, char *braille_options
);
129 extern int braille_unregister_console(struct console
*);
131 extern int console_suspend_enabled
;
133 /* Suspend and resume console messages over PM events */
134 extern void suspend_console(void);
135 extern void resume_console(void);
137 int mda_console_init(void);
138 void prom_con_init(void);
140 void vcs_make_sysfs(int index
);
141 void vcs_remove_sysfs(int index
);
143 /* Some debug stub to catch some of the obvious races in the VT code */
145 #define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress)
147 #define WARN_CONSOLE_UNLOCKED()
150 /* VESA Blanking Levels */
151 #define VESA_NO_BLANKING 0
152 #define VESA_VSYNC_SUSPEND 1
153 #define VESA_HSYNC_SUSPEND 2
154 #define VESA_POWERDOWN 3
156 #ifdef CONFIG_VGA_CONSOLE
157 extern bool vgacon_text_force(void);
160 #endif /* _LINUX_CONSOLE_H */
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