/* *  linux/include/linux/console.h * *  Copyright (C) 1993        Hamish Macdonald * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file COPYING in the main directory of this archive * for more details. * * Changed: * 10-Mar-94: Arno Griffioen: Conversion for vt100 emulator port from PC LINUX */ #ifndef _LINUX_CONSOLE_H_#define _LINUX_CONSOLE_H_ 1 #include <linux/types.h> struct vc_data;struct console_font_op;struct console_font;struct module;struct tty_struct; /* * this is what the terminal answers to a ESC-Z or csi0c query. */#define VT100ID "\033[?1;2c"#define VT102ID "\033[?6c" struct consw {	struct module *owner;	const char *(*con_startup)(void);	void	(*con_init)(struct vc_data *, int);	void	(*con_deinit)(struct vc_data *);	void	(*con_clear)(struct vc_data *, int, int, int, int);	void	(*con_putc)(struct vc_data *, int, int, int);	void	(*con_putcs)(struct vc_data *, const unsigned short *, int, int, int);	void	(*con_cursor)(struct vc_data *, int);	int	(*con_scroll)(struct vc_data *, int, int, int, int);	void	(*con_bmove)(struct vc_data *, int, int, int, int, int, int);	int	(*con_switch)(struct vc_data *);	int	(*con_blank)(struct vc_data *, int, int);	int	(*con_font_set)(struct vc_data *, struct console_font *, unsigned);	int	(*con_font_get)(struct vc_data *, struct console_font *);	int	(*con_font_default)(struct vc_data *, struct console_font *, char *);	int	(*con_font_copy)(struct vc_data *, int);	int     (*con_resize)(struct vc_data *, unsigned int, unsigned int,			       unsigned int);	int	(*con_set_palette)(struct vc_data *, unsigned char *);	int	(*con_scrolldelta)(struct vc_data *, int);	int	(*con_set_origin)(struct vc_data *);	void	(*con_save_screen)(struct vc_data *);	u8	(*con_build_attr)(struct vc_data *, u8, u8, u8, u8, u8, u8);	void	(*con_invert_region)(struct vc_data *, u16 *, int);	u16    *(*con_screen_pos)(struct vc_data *, int);	unsigned long (*con_getxy)(struct vc_data *, unsigned long, int *, int *);	/*	 * Prepare the console for the debugger.  This includes, but is not	 * limited to, unblanking the console, loading an appropriate	 * palette, and allowing debugger generated output.	 */	int	(*con_debug_enter)(struct vc_data *);	/*	 * Restore the console to its pre-debug state as closely as possible.	 */	int	(*con_debug_leave)(struct vc_data *);}; extern const struct consw *conswitchp; extern const struct consw dummy_con;	/* dummy console buffer */extern const struct consw vga_con;	/* VGA text console */extern const struct consw newport_con;	/* SGI Newport console  */extern const struct consw prom_con;	/* SPARC PROM console */ int con_is_bound(const struct consw *csw);int register_con_driver(const struct consw *csw, int first, int last);int unregister_con_driver(const struct consw *csw);int take_over_console(const struct consw *sw, int first, int last, int deflt);void give_up_console(const struct consw *sw);#ifdef CONFIG_HW_CONSOLEint con_debug_enter(struct vc_data *vc);int con_debug_leave(void);#elsestatic inline int con_debug_enter(struct vc_data *vc){	return 0;}static inline int con_debug_leave(void){	return 0;}#endif /* scroll */#define SM_UP       (1)#define SM_DOWN     (2) /* cursor */#define CM_DRAW     (1)#define CM_ERASE    (2)#define CM_MOVE     (3) /* * The interface for a console, or any other device that wants to capture * console messages (printer driver?) * * If a console driver is marked CON_BOOT then it will be auto-unregistered * when the first real console is registered.  This is for early-printk drivers. */ #define CON_PRINTBUFFER	(1)#define CON_CONSDEV	(2) /* Last on the command line */#define CON_ENABLED	(4)#define CON_BOOT	(8)#define CON_ANYTIME	(16) /* Safe to call when cpu is offline */#define CON_BRL		(32) /* Used for a braille device */ struct console {	char	name[16];	void	(*write)(struct console *, const char *, unsigned);	int	(*read)(struct console *, char *, unsigned);	struct tty_driver *(*device)(struct console *, int *);	void	(*unblank)(void);	int	(*setup)(struct console *, char *);	int	(*early_setup)(void);	short	flags;	short	index;	int	cflag;	void	*data;	struct	 console *next;}; /* * for_each_console() allows you to iterate on each console */#define for_each_console(con) \	for (con = console_drivers; con != NULL; con = con->next) extern int console_set_on_cmdline; extern int add_preferred_console(char *name, int idx, char *options);extern int update_console_cmdline(char *name, int idx, char *name_new, int idx_new, char *options);extern void register_console(struct console *);extern int unregister_console(struct console *);extern struct console *console_drivers;extern void console_lock(void);extern int console_trylock(void);extern void console_unlock(void);extern void console_conditional_schedule(void);extern void console_unblank(void);extern struct tty_driver *console_device(int *);extern void console_stop(struct console *);extern void console_start(struct console *);extern int is_console_locked(void);extern int braille_register_console(struct console *, int index,		char *console_options, char *braille_options);extern int braille_unregister_console(struct console *);extern void console_sysfs_notify(void);extern bool console_suspend_enabled; /* Suspend and resume console messages over PM events */extern void suspend_console(void);extern void resume_console(void); int mda_console_init(void);void prom_con_init(void); void vcs_make_sysfs(int index);void vcs_remove_sysfs(int index); /* Some debug stub to catch some of the obvious races in the VT code */#if 1#define WARN_CONSOLE_UNLOCKED()	WARN_ON(!is_console_locked() && !oops_in_progress)#else#define WARN_CONSOLE_UNLOCKED()#endif /* VESA Blanking Levels */#define VESA_NO_BLANKING        0#define VESA_VSYNC_SUSPEND      1#define VESA_HSYNC_SUSPEND      2#define VESA_POWERDOWN          3 #ifdef CONFIG_VGA_CONSOLEextern bool vgacon_text_force(void);#endif #endif /* _LINUX_CONSOLE_H */