| /* |
| * 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 - callbacks for consoles |
| * |
| * @con_set_palette: sets the palette of the console to @table (optional) |
| * @con_scrolldelta: the contents of the console should be scrolled by @lines. |
| * Invoked by user. (optional) |
| */ |
| 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); |
| 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); |
| void (*con_set_palette)(struct vc_data *, |
| const unsigned char *table); |
| void (*con_scrolldelta)(struct vc_data *, int lines); |
| 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 do_unregister_con_driver(const struct consw *csw); |
| int do_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 |
| static 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 */ |
| #define CON_EXTENDED (64) /* Use the extended output format a la /dev/kmsg */ |
| |
| 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 (*match)(struct console *, char *name, int idx, char *options); |
| 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 struct console *early_console; |
| |
| extern int add_preferred_console(char *name, int idx, 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 void console_flush_on_panic(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 *); |
| #ifdef CONFIG_TTY |
| extern void console_sysfs_notify(void); |
| #else |
| static inline void console_sysfs_notify(void) |
| { } |
| #endif |
| 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); |
| #else |
| static inline bool vgacon_text_force(void) { return false; } |
| #endif |
| |
| #endif /* _LINUX_CONSOLE_H */ |