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196 lines
6.1 KiB
196 lines
6.1 KiB
/* |
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* linux/include/linux/console.h |
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* |
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* Copyright (C) 1993 Hamish Macdonald |
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* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file COPYING in the main directory of this archive |
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* for more details. |
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* |
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* Changed: |
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* 10-Mar-94: Arno Griffioen: Conversion for vt100 emulator port from PC LINUX |
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*/ |
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#ifndef _LINUX_CONSOLE_H_ |
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#define _LINUX_CONSOLE_H_ 1 |
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#include <linux/types.h> |
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struct vc_data; |
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struct console_font_op; |
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struct console_font; |
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struct module; |
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struct tty_struct; |
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/* |
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* this is what the terminal answers to a ESC-Z or csi0c query. |
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*/ |
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#define VT100ID "\033[?1;2c" |
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#define VT102ID "\033[?6c" |
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struct consw { |
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struct module *owner; |
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const char *(*con_startup)(void); |
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void (*con_init)(struct vc_data *, int); |
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void (*con_deinit)(struct vc_data *); |
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void (*con_clear)(struct vc_data *, int, int, int, int); |
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void (*con_putc)(struct vc_data *, int, int, int); |
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void (*con_putcs)(struct vc_data *, const unsigned short *, int, int, int); |
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void (*con_cursor)(struct vc_data *, int); |
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int (*con_scroll)(struct vc_data *, int, int, int, int); |
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void (*con_bmove)(struct vc_data *, int, int, int, int, int, int); |
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int (*con_switch)(struct vc_data *); |
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int (*con_blank)(struct vc_data *, int, int); |
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int (*con_font_set)(struct vc_data *, struct console_font *, unsigned); |
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int (*con_font_get)(struct vc_data *, struct console_font *); |
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int (*con_font_default)(struct vc_data *, struct console_font *, char *); |
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int (*con_font_copy)(struct vc_data *, int); |
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int (*con_resize)(struct vc_data *, unsigned int, unsigned int, |
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unsigned int); |
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int (*con_set_palette)(struct vc_data *, unsigned char *); |
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int (*con_scrolldelta)(struct vc_data *, int); |
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int (*con_set_origin)(struct vc_data *); |
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void (*con_save_screen)(struct vc_data *); |
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u8 (*con_build_attr)(struct vc_data *, u8, u8, u8, u8, u8, u8); |
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void (*con_invert_region)(struct vc_data *, u16 *, int); |
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u16 *(*con_screen_pos)(struct vc_data *, int); |
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unsigned long (*con_getxy)(struct vc_data *, unsigned long, int *, int *); |
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/* |
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* Prepare the console for the debugger. This includes, but is not |
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* limited to, unblanking the console, loading an appropriate |
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* palette, and allowing debugger generated output. |
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*/ |
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int (*con_debug_enter)(struct vc_data *); |
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/* |
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* Restore the console to its pre-debug state as closely as possible. |
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*/ |
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int (*con_debug_leave)(struct vc_data *); |
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}; |
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extern const struct consw *conswitchp; |
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extern const struct consw dummy_con; /* dummy console buffer */ |
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extern const struct consw vga_con; /* VGA text console */ |
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extern const struct consw newport_con; /* SGI Newport console */ |
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extern const struct consw prom_con; /* SPARC PROM console */ |
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int con_is_bound(const struct consw *csw); |
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int do_unregister_con_driver(const struct consw *csw); |
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int do_take_over_console(const struct consw *sw, int first, int last, int deflt); |
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void give_up_console(const struct consw *sw); |
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#ifdef CONFIG_HW_CONSOLE |
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int con_debug_enter(struct vc_data *vc); |
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int con_debug_leave(void); |
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#else |
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static inline int con_debug_enter(struct vc_data *vc) |
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{ |
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return 0; |
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} |
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static inline int con_debug_leave(void) |
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{ |
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return 0; |
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} |
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#endif |
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/* scroll */ |
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#define SM_UP (1) |
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#define SM_DOWN (2) |
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/* cursor */ |
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#define CM_DRAW (1) |
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#define CM_ERASE (2) |
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#define CM_MOVE (3) |
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/* |
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* The interface for a console, or any other device that wants to capture |
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* console messages (printer driver?) |
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* |
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* If a console driver is marked CON_BOOT then it will be auto-unregistered |
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* when the first real console is registered. This is for early-printk drivers. |
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*/ |
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#define CON_PRINTBUFFER (1) |
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#define CON_CONSDEV (2) /* Last on the command line */ |
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#define CON_ENABLED (4) |
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#define CON_BOOT (8) |
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#define CON_ANYTIME (16) /* Safe to call when cpu is offline */ |
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#define CON_BRL (32) /* Used for a braille device */ |
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#define CON_EXTENDED (64) /* Use the extended output format a la /dev/kmsg */ |
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struct console { |
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char name[16]; |
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void (*write)(struct console *, const char *, unsigned); |
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int (*read)(struct console *, char *, unsigned); |
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struct tty_driver *(*device)(struct console *, int *); |
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void (*unblank)(void); |
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int (*setup)(struct console *, char *); |
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int (*match)(struct console *, char *name, int idx, char *options); |
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short flags; |
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short index; |
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int cflag; |
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void *data; |
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struct console *next; |
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}; |
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/* |
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* for_each_console() allows you to iterate on each console |
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*/ |
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#define for_each_console(con) \ |
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for (con = console_drivers; con != NULL; con = con->next) |
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extern int console_set_on_cmdline; |
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extern struct console *early_console; |
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extern int add_preferred_console(char *name, int idx, char *options); |
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extern void register_console(struct console *); |
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extern int unregister_console(struct console *); |
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extern struct console *console_drivers; |
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extern void console_lock(void); |
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extern int console_trylock(void); |
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extern void console_unlock(void); |
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extern void console_conditional_schedule(void); |
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extern void console_unblank(void); |
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extern void console_flush_on_panic(void); |
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extern struct tty_driver *console_device(int *); |
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extern void console_stop(struct console *); |
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extern void console_start(struct console *); |
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extern int is_console_locked(void); |
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extern int braille_register_console(struct console *, int index, |
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char *console_options, char *braille_options); |
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extern int braille_unregister_console(struct console *); |
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#ifdef CONFIG_TTY |
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extern void console_sysfs_notify(void); |
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#else |
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static inline void console_sysfs_notify(void) |
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{ } |
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#endif |
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extern bool console_suspend_enabled; |
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/* Suspend and resume console messages over PM events */ |
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extern void suspend_console(void); |
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extern void resume_console(void); |
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int mda_console_init(void); |
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void prom_con_init(void); |
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void vcs_make_sysfs(int index); |
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void vcs_remove_sysfs(int index); |
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/* Some debug stub to catch some of the obvious races in the VT code */ |
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#if 1 |
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#define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress) |
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#else |
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#define WARN_CONSOLE_UNLOCKED() |
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#endif |
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/* VESA Blanking Levels */ |
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#define VESA_NO_BLANKING 0 |
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#define VESA_VSYNC_SUSPEND 1 |
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#define VESA_HSYNC_SUSPEND 2 |
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#define VESA_POWERDOWN 3 |
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#ifdef CONFIG_VGA_CONSOLE |
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extern bool vgacon_text_force(void); |
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#endif |
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#endif /* _LINUX_CONSOLE_H */
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