| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/linux/console.h |
| 3 | * |
| 4 | * Copyright (C) 1993 Hamish Macdonald |
| 5 | * |
| 6 | * This file is subject to the terms and conditions of the GNU General Public |
| 7 | * License. See the file COPYING in the main directory of this archive |
| 8 | * for more details. |
| 9 | * |
| 10 | * Changed: |
| 11 | * 10-Mar-94: Arno Griffioen: Conversion for vt100 emulator port from PC LINUX |
| 12 | */ |
| 13 | |
| 14 | #ifndef _LINUX_CONSOLE_H_ |
| 15 | #define _LINUX_CONSOLE_H_ 1 |
| 16 | |
| 17 | #include <linux/types.h> |
| 18 | #include <linux/spinlock.h> |
| 19 | |
| 20 | struct vc_data; |
| 21 | struct console_font_op; |
| 22 | struct console_font; |
| 23 | struct module; |
| 24 | |
| 25 | /* |
| 26 | * this is what the terminal answers to a ESC-Z or csi0c query. |
| 27 | */ |
| 28 | #define VT100ID "\033[?1;2c" |
| 29 | #define VT102ID "\033[?6c" |
| 30 | |
| 31 | struct consw { |
| 32 | struct module *owner; |
| 33 | const char *(*con_startup)(void); |
| 34 | void (*con_init)(struct vc_data *, int); |
| 35 | void (*con_deinit)(struct vc_data *); |
| 36 | void (*con_clear)(struct vc_data *, int, int, int, int); |
| 37 | void (*con_putc)(struct vc_data *, int, int, int); |
| 38 | void (*con_putcs)(struct vc_data *, const unsigned short *, int, int, int); |
| 39 | void (*con_cursor)(struct vc_data *, int); |
| 40 | int (*con_scroll)(struct vc_data *, int, int, int, int); |
| 41 | void (*con_bmove)(struct vc_data *, int, int, int, int, int, int); |
| 42 | int (*con_switch)(struct vc_data *); |
| 43 | int (*con_blank)(struct vc_data *, int, int); |
| 44 | int (*con_font_set)(struct vc_data *, struct console_font *, unsigned); |
| 45 | int (*con_font_get)(struct vc_data *, struct console_font *); |
| 46 | int (*con_font_default)(struct vc_data *, struct console_font *, char *); |
| 47 | int (*con_font_copy)(struct vc_data *, int); |
| 48 | int (*con_resize)(struct vc_data *, unsigned int, unsigned int); |
| 49 | int (*con_set_palette)(struct vc_data *, unsigned char *); |
| 50 | int (*con_scrolldelta)(struct vc_data *, int); |
| 51 | int (*con_set_origin)(struct vc_data *); |
| 52 | void (*con_save_screen)(struct vc_data *); |
| 53 | u8 (*con_build_attr)(struct vc_data *, u8, u8, u8, u8, u8); |
| 54 | void (*con_invert_region)(struct vc_data *, u16 *, int); |
| 55 | u16 *(*con_screen_pos)(struct vc_data *, int); |
| 56 | unsigned long (*con_getxy)(struct vc_data *, unsigned long, int *, int *); |
| 57 | }; |
| 58 | |
| 59 | extern const struct consw *conswitchp; |
| 60 | |
| 61 | extern const struct consw dummy_con; /* dummy console buffer */ |
| 62 | extern const struct consw vga_con; /* VGA text console */ |
| 63 | extern const struct consw newport_con; /* SGI Newport console */ |
| 64 | extern const struct consw prom_con; /* SPARC PROM console */ |
| 65 | |
| 66 | int take_over_console(const struct consw *sw, int first, int last, int deflt); |
| 67 | void give_up_console(const struct consw *sw); |
| 68 | |
| 69 | /* scroll */ |
| 70 | #define SM_UP (1) |
| 71 | #define SM_DOWN (2) |
| 72 | |
| 73 | /* cursor */ |
| 74 | #define CM_DRAW (1) |
| 75 | #define CM_ERASE (2) |
| 76 | #define CM_MOVE (3) |
| 77 | |
| 78 | /* |
| 79 | * The interface for a console, or any other device that wants to capture |
| 80 | * console messages (printer driver?) |
| 81 | * |
| 82 | * If a console driver is marked CON_BOOT then it will be auto-unregistered |
| 83 | * when the first real console is registered. This is for early-printk drivers. |
| 84 | */ |
| 85 | |
| 86 | #define CON_PRINTBUFFER (1) |
| 87 | #define CON_CONSDEV (2) /* Last on the command line */ |
| 88 | #define CON_ENABLED (4) |
| 89 | #define CON_BOOT (8) |
| 90 | |
| 91 | struct console |
| 92 | { |
| 93 | char name[8]; |
| 94 | void (*write)(struct console *, const char *, unsigned); |
| 95 | int (*read)(struct console *, char *, unsigned); |
| 96 | struct tty_driver *(*device)(struct console *, int *); |
| 97 | void (*unblank)(void); |
| 98 | int (*setup)(struct console *, char *); |
| 99 | short flags; |
| 100 | short index; |
| 101 | int cflag; |
| 102 | void *data; |
| 103 | struct console *next; |
| 104 | }; |
| 105 | |
| 106 | extern int add_preferred_console(char *name, int idx, char *options); |
| 107 | extern void register_console(struct console *); |
| 108 | extern int unregister_console(struct console *); |
| 109 | extern struct console *console_drivers; |
| 110 | extern void acquire_console_sem(void); |
| 111 | extern int try_acquire_console_sem(void); |
| 112 | extern void release_console_sem(void); |
| 113 | extern void console_conditional_schedule(void); |
| 114 | extern void console_unblank(void); |
| 115 | extern struct tty_driver *console_device(int *); |
| 116 | extern void console_stop(struct console *); |
| 117 | extern void console_start(struct console *); |
| 118 | extern int is_console_locked(void); |
| 119 | |
| 120 | /* Some debug stub to catch some of the obvious races in the VT code */ |
| 121 | #if 1 |
| 122 | #define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress) |
| 123 | #else |
| 124 | #define WARN_CONSOLE_UNLOCKED() |
| 125 | #endif |
| 126 | |
| 127 | /* VESA Blanking Levels */ |
| 128 | #define VESA_NO_BLANKING 0 |
| 129 | #define VESA_VSYNC_SUSPEND 1 |
| 130 | #define VESA_HSYNC_SUSPEND 2 |
| 131 | #define VESA_POWERDOWN 3 |
| 132 | |
| 133 | #endif /* _LINUX_CONSOLE_H */ |