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>
18 #include <linux/spinlock.h>
21 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);
49 int (*con_set_palette)(struct vc_data *, unsigned char *);
50 int (*con_scrolldelta)(struct vc_data *, int);
51 int (*con_set_origin)(struct vc_data *);
52 void (*con_save_screen)(struct vc_data *);
53 u8 (*con_build_attr)(struct vc_data *, u8, u8, u8, u8, u8);
54 void (*con_invert_region)(struct vc_data *, u16 *, int);
55 u16 *(*con_screen_pos)(struct vc_data *, int);
56 unsigned long (*con_getxy)(struct vc_data *, unsigned long, int *, int *);
59 extern const struct consw *conswitchp;
61 extern const struct consw dummy_con; /* dummy console buffer */
62 extern const struct consw vga_con; /* VGA text console */
63 extern const struct consw newport_con; /* SGI Newport console */
64 extern const struct consw prom_con; /* SPARC PROM console */
66 int take_over_console(const struct consw *sw, int first, int last, int deflt);
67 void give_up_console(const struct consw *sw);
79 * The interface for a console, or any other device that wants to capture
80 * console messages (printer driver?)
82 * If a console driver is marked CON_BOOT then it will be auto-unregistered
83 * when the first real console is registered. This is for early-printk drivers.
86 #define CON_PRINTBUFFER (1)
87 #define CON_CONSDEV (2) /* Last on the command line */
88 #define CON_ENABLED (4)
94 void (*write)(struct console *, const char *, unsigned);
95 int (*read)(struct console *, char *, unsigned);
96 struct tty_driver *(*device)(struct console *, int *);
97 void (*unblank)(void);
98 int (*setup)(struct console *, char *);
103 struct console *next;
106 extern int add_preferred_console(char *name, int idx, char *options);
107 extern void register_console(struct console *);
108 extern int unregister_console(struct console *);
109 extern struct console *console_drivers;
110 extern void acquire_console_sem(void);
111 extern int try_acquire_console_sem(void);
112 extern void release_console_sem(void);
113 extern void console_conditional_schedule(void);
114 extern void console_unblank(void);
115 extern struct tty_driver *console_device(int *);
116 extern void console_stop(struct console *);
117 extern void console_start(struct console *);
118 extern int is_console_locked(void);
120 /* Suspend and resume console messages over PM events */
121 extern void suspend_console(void);
122 extern void resume_console(void);
124 /* Some debug stub to catch some of the obvious races in the VT code */
126 #define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress)
128 #define WARN_CONSOLE_UNLOCKED()
131 /* VESA Blanking Levels */
132 #define VESA_NO_BLANKING 0
133 #define VESA_VSYNC_SUSPEND 1
134 #define VESA_HSYNC_SUSPEND 2
135 #define VESA_POWERDOWN 3
137 #endif /* _LINUX_CONSOLE_H */