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 *);
59 * Prepare the console for the debugger. This includes, but is not
60 * limited to, unblanking the console, loading an appropriate
61 * palette, and allowing debugger generated output.
63 int (*con_debug_enter
)(struct vc_data
*);
65 * Restore the console to its pre-debug state as closely as possible.
67 int (*con_debug_leave
)(struct vc_data
*);
70 extern const struct consw
*conswitchp
;
72 extern const struct consw dummy_con
; /* dummy console buffer */
73 extern const struct consw vga_con
; /* VGA text console */
74 extern const struct consw newport_con
; /* SGI Newport console */
75 extern const struct consw prom_con
; /* SPARC PROM console */
77 int con_is_bound(const struct consw
*csw
);
78 int register_con_driver(const struct consw
*csw
, int first
, int last
);
79 int unregister_con_driver(const struct consw
*csw
);
80 int take_over_console(const struct consw
*sw
, int first
, int last
, int deflt
);
81 void give_up_console(const struct consw
*sw
);
82 #ifdef CONFIG_HW_CONSOLE
83 int con_debug_enter(struct vc_data
*vc
);
84 int con_debug_leave(void);
86 #define con_debug_enter(vc) (0)
87 #define con_debug_leave() (0)
100 * The interface for a console, or any other device that wants to capture
101 * console messages (printer driver?)
103 * If a console driver is marked CON_BOOT then it will be auto-unregistered
104 * when the first real console is registered. This is for early-printk drivers.
107 #define CON_PRINTBUFFER (1)
108 #define CON_CONSDEV (2) /* Last on the command line */
109 #define CON_ENABLED (4)
111 #define CON_ANYTIME (16) /* Safe to call when cpu is offline */
112 #define CON_BRL (32) /* Used for a braille device */
116 void (*write
)(struct console
*, const char *, unsigned);
117 int (*read
)(struct console
*, char *, unsigned);
118 struct tty_driver
*(*device
)(struct console
*, int *);
119 void (*unblank
)(void);
120 int (*setup
)(struct console
*, char *);
121 int (*early_setup
)(void);
126 struct console
*next
;
130 * for_each_console() allows you to iterate on each console
132 #define for_each_console(con) \
133 for (con = console_drivers; con != NULL; con = con->next)
135 extern int console_set_on_cmdline
;
137 extern int add_preferred_console(char *name
, int idx
, char *options
);
138 extern int update_console_cmdline(char *name
, int idx
, char *name_new
, int idx_new
, char *options
);
139 extern void register_console(struct console
*);
140 extern int unregister_console(struct console
*);
141 extern struct console
*console_drivers
;
142 extern void console_lock(void);
143 extern int console_trylock(void);
144 extern void console_unlock(void);
145 extern void console_conditional_schedule(void);
146 extern void console_unblank(void);
147 extern struct tty_driver
*console_device(int *);
148 extern void console_stop(struct console
*);
149 extern void console_start(struct console
*);
150 extern int is_console_locked(void);
151 extern int braille_register_console(struct console
*, int index
,
152 char *console_options
, char *braille_options
);
153 extern int braille_unregister_console(struct console
*);
154 extern void console_sysfs_notify(void);
155 extern int console_suspend_enabled
;
157 /* Suspend and resume console messages over PM events */
158 extern void suspend_console(void);
159 extern void resume_console(void);
161 int mda_console_init(void);
162 void prom_con_init(void);
164 void vcs_make_sysfs(int index
);
165 void vcs_remove_sysfs(int index
);
167 /* Some debug stub to catch some of the obvious races in the VT code */
169 #define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress)
171 #define WARN_CONSOLE_UNLOCKED()
174 /* VESA Blanking Levels */
175 #define VESA_NO_BLANKING 0
176 #define VESA_VSYNC_SUSPEND 1
177 #define VESA_HSYNC_SUSPEND 2
178 #define VESA_POWERDOWN 3
180 #ifdef CONFIG_VGA_CONSOLE
181 extern bool vgacon_text_force(void);
184 #endif /* _LINUX_CONSOLE_H */
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