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;
24 * this is what the terminal answers to a ESC-Z or csi0c query.
26 #define VT100ID "\033[?1;2c"
27 #define VT102ID "\033[?6c"
30 const char *(*con_startup)(void);
31 void (*con_init)(struct vc_data *, int);
32 void (*con_deinit)(struct vc_data *);
33 void (*con_clear)(struct vc_data *, int, int, int, int);
34 void (*con_putc)(struct vc_data *, int, int, int);
35 void (*con_putcs)(struct vc_data *, const unsigned short *, int, int, int);
36 void (*con_cursor)(struct vc_data *, int);
37 int (*con_scroll)(struct vc_data *, int, int, int, int);
38 void (*con_bmove)(struct vc_data *, int, int, int, int, int, int);
39 int (*con_switch)(struct vc_data *);
40 int (*con_blank)(struct vc_data *, int, int);
41 int (*con_font_op)(struct vc_data *, struct console_font_op *);
42 int (*con_resize)(struct vc_data *, unsigned int, unsigned int);
43 int (*con_set_palette)(struct vc_data *, unsigned char *);
44 int (*con_scrolldelta)(struct vc_data *, int);
45 int (*con_set_origin)(struct vc_data *);
46 void (*con_save_screen)(struct vc_data *);
47 u8 (*con_build_attr)(struct vc_data *, u8, u8, u8, u8, u8);
48 void (*con_invert_region)(struct vc_data *, u16 *, int);
49 u16 *(*con_screen_pos)(struct vc_data *, int);
50 unsigned long (*con_getxy)(struct vc_data *, unsigned long, int *, int *);
53 extern const struct consw *conswitchp;
55 extern const struct consw dummy_con; /* dummy console buffer */
56 extern const struct consw fb_con; /* frame buffer based console */
57 extern const struct consw vga_con; /* VGA text console */
58 extern const struct consw newport_con; /* SGI Newport console */
59 extern const struct consw prom_con; /* SPARC PROM console */
61 void take_over_console(const struct consw *sw, int first, int last, int deflt);
62 void give_up_console(const struct consw *sw);
74 * The interface for a console, or any other device that
75 * wants to capture console messages (printer driver?)
78 #define CON_PRINTBUFFER (1)
79 #define CON_CONSDEV (2) /* Last on the command line */
80 #define CON_ENABLED (4)
85 void (*write)(struct console *, const char *, unsigned);
86 int (*read)(struct console *, char *, unsigned);
87 struct tty_driver *(*device)(struct console *, int *);
88 void (*unblank)(void);
89 int (*setup)(struct console *, char *);
97 extern int add_preferred_console(char *name, int idx, char *options);
98 extern void register_console(struct console *);
99 extern int unregister_console(struct console *);
100 extern struct console *console_drivers;
101 extern void acquire_console_sem(void);
102 extern void release_console_sem(void);
103 extern void console_conditional_schedule(void);
104 extern void console_unblank(void);
105 extern int is_console_locked(void);
107 /* Some debug stub to catch some of the obvious races in the VT code */
109 #define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress)
111 #define WARN_CONSOLE_UNLOCKED()
114 /* VESA Blanking Levels */
115 #define VESA_NO_BLANKING 0
116 #define VESA_VSYNC_SUSPEND 1
117 #define VESA_HSYNC_SUSPEND 2
118 #define VESA_POWERDOWN 3
120 #endif /* _LINUX_CONSOLE_H */