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-rw-r--r--kernel/include/linux/console.h194
1 files changed, 194 insertions, 0 deletions
diff --git a/kernel/include/linux/console.h b/kernel/include/linux/console.h
new file mode 100644
index 000000000..9f50fb413
--- /dev/null
+++ b/kernel/include/linux/console.h
@@ -0,0 +1,194 @@
+/*
+ * 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 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 */
+
+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 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);
+#endif
+
+#endif /* _LINUX_CONSOLE_H */