/* * 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_CONSOLE int con_debug_enter(struct vc_data *vc); int con_debug_leave(void); #else #define con_debug_enter(vc) (0) #define con_debug_leave() (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_CONSOLE extern bool vgacon_text_force(void); #endif #endif /* _LINUX_CONSOLE_H */