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1da177e4 LT |
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> | |
1da177e4 LT |
18 | |
19 | struct vc_data; | |
20 | struct console_font_op; | |
21 | struct console_font; | |
22 | struct module; | |
1b135431 | 23 | struct tty_struct; |
1da177e4 LT |
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); | |
e400b6ec AD |
48 | int (*con_resize)(struct vc_data *, unsigned int, unsigned int, |
49 | unsigned int); | |
1da177e4 LT |
50 | int (*con_set_palette)(struct vc_data *, unsigned char *); |
51 | int (*con_scrolldelta)(struct vc_data *, int); | |
52 | int (*con_set_origin)(struct vc_data *); | |
53 | void (*con_save_screen)(struct vc_data *); | |
fa6ce9ab | 54 | u8 (*con_build_attr)(struct vc_data *, u8, u8, u8, u8, u8, u8); |
1da177e4 LT |
55 | void (*con_invert_region)(struct vc_data *, u16 *, int); |
56 | u16 *(*con_screen_pos)(struct vc_data *, int); | |
57 | unsigned long (*con_getxy)(struct vc_data *, unsigned long, int *, int *); | |
b45cfba4 JB |
58 | /* |
59 | * Prepare the console for the debugger. This includes, but is not | |
60 | * limited to, unblanking the console, loading an appropriate | |
61 | * palette, and allowing debugger generated output. | |
62 | */ | |
63 | int (*con_debug_enter)(struct vc_data *); | |
64 | /* | |
65 | * Restore the console to its pre-debug state as closely as possible. | |
66 | */ | |
67 | int (*con_debug_leave)(struct vc_data *); | |
1da177e4 LT |
68 | }; |
69 | ||
70 | extern const struct consw *conswitchp; | |
71 | ||
72 | extern const struct consw dummy_con; /* dummy console buffer */ | |
73 | extern const struct consw vga_con; /* VGA text console */ | |
74 | extern const struct consw newport_con; /* SGI Newport console */ | |
75 | extern const struct consw prom_con; /* SPARC PROM console */ | |
76 | ||
3e795de7 | 77 | int con_is_bound(const struct consw *csw); |
e93a9a86 | 78 | int do_unregister_con_driver(const struct consw *csw); |
50e244cc | 79 | int do_take_over_console(const struct consw *sw, int first, int last, int deflt); |
1da177e4 | 80 | void give_up_console(const struct consw *sw); |
9261ec1a | 81 | #ifdef CONFIG_HW_CONSOLE |
b45cfba4 JB |
82 | int con_debug_enter(struct vc_data *vc); |
83 | int con_debug_leave(void); | |
9261ec1a | 84 | #else |
f2f0945e AB |
85 | static inline int con_debug_enter(struct vc_data *vc) |
86 | { | |
87 | return 0; | |
88 | } | |
89 | static inline int con_debug_leave(void) | |
90 | { | |
91 | return 0; | |
92 | } | |
9261ec1a | 93 | #endif |
b45cfba4 | 94 | |
1da177e4 LT |
95 | /* scroll */ |
96 | #define SM_UP (1) | |
97 | #define SM_DOWN (2) | |
98 | ||
99 | /* cursor */ | |
100 | #define CM_DRAW (1) | |
101 | #define CM_ERASE (2) | |
102 | #define CM_MOVE (3) | |
103 | ||
104 | /* | |
105 | * The interface for a console, or any other device that wants to capture | |
106 | * console messages (printer driver?) | |
107 | * | |
108 | * If a console driver is marked CON_BOOT then it will be auto-unregistered | |
109 | * when the first real console is registered. This is for early-printk drivers. | |
110 | */ | |
111 | ||
112 | #define CON_PRINTBUFFER (1) | |
113 | #define CON_CONSDEV (2) /* Last on the command line */ | |
114 | #define CON_ENABLED (4) | |
115 | #define CON_BOOT (8) | |
76a8ad29 | 116 | #define CON_ANYTIME (16) /* Safe to call when cpu is offline */ |
f7511d5f | 117 | #define CON_BRL (32) /* Used for a braille device */ |
1da177e4 | 118 | |
6ae9200f AM |
119 | struct console { |
120 | char name[16]; | |
1da177e4 LT |
121 | void (*write)(struct console *, const char *, unsigned); |
122 | int (*read)(struct console *, char *, unsigned); | |
123 | struct tty_driver *(*device)(struct console *, int *); | |
124 | void (*unblank)(void); | |
125 | int (*setup)(struct console *, char *); | |
18a8bd94 | 126 | int (*early_setup)(void); |
1da177e4 LT |
127 | short flags; |
128 | short index; | |
129 | int cflag; | |
130 | void *data; | |
131 | struct console *next; | |
132 | }; | |
133 | ||
a75d946f JS |
134 | /* |
135 | * for_each_console() allows you to iterate on each console | |
136 | */ | |
137 | #define for_each_console(con) \ | |
138 | for (con = console_drivers; con != NULL; con = con->next) | |
139 | ||
9e124fe1 | 140 | extern int console_set_on_cmdline; |
d0380e6c | 141 | extern struct console *early_console; |
9e124fe1 | 142 | |
1da177e4 | 143 | extern int add_preferred_console(char *name, int idx, char *options); |
18a8bd94 | 144 | extern int update_console_cmdline(char *name, int idx, char *name_new, int idx_new, char *options); |
1da177e4 LT |
145 | extern void register_console(struct console *); |
146 | extern int unregister_console(struct console *); | |
147 | extern struct console *console_drivers; | |
ac751efa TH |
148 | extern void console_lock(void); |
149 | extern int console_trylock(void); | |
150 | extern void console_unlock(void); | |
1da177e4 LT |
151 | extern void console_conditional_schedule(void); |
152 | extern void console_unblank(void); | |
153 | extern struct tty_driver *console_device(int *); | |
154 | extern void console_stop(struct console *); | |
155 | extern void console_start(struct console *); | |
156 | extern int is_console_locked(void); | |
f7511d5f ST |
157 | extern int braille_register_console(struct console *, int index, |
158 | char *console_options, char *braille_options); | |
159 | extern int braille_unregister_console(struct console *); | |
4f73bc4d | 160 | #ifdef CONFIG_TTY |
fbc92a34 | 161 | extern void console_sysfs_notify(void); |
4f73bc4d JM |
162 | #else |
163 | static inline void console_sysfs_notify(void) | |
164 | { } | |
165 | #endif | |
90ab5ee9 | 166 | extern bool console_suspend_enabled; |
8f4ce8c3 | 167 | |
557240b4 LT |
168 | /* Suspend and resume console messages over PM events */ |
169 | extern void suspend_console(void); | |
170 | extern void resume_console(void); | |
171 | ||
3cb340ec AB |
172 | int mda_console_init(void); |
173 | void prom_con_init(void); | |
174 | ||
4995f8ef KS |
175 | void vcs_make_sysfs(int index); |
176 | void vcs_remove_sysfs(int index); | |
1b135431 | 177 | |
1da177e4 LT |
178 | /* Some debug stub to catch some of the obvious races in the VT code */ |
179 | #if 1 | |
180 | #define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress) | |
181 | #else | |
182 | #define WARN_CONSOLE_UNLOCKED() | |
183 | #endif | |
184 | ||
185 | /* VESA Blanking Levels */ | |
186 | #define VESA_NO_BLANKING 0 | |
187 | #define VESA_VSYNC_SUSPEND 1 | |
188 | #define VESA_HSYNC_SUSPEND 2 | |
189 | #define VESA_POWERDOWN 3 | |
190 | ||
f453ba04 DA |
191 | #ifdef CONFIG_VGA_CONSOLE |
192 | extern bool vgacon_text_force(void); | |
193 | #endif | |
194 | ||
1da177e4 | 195 | #endif /* _LINUX_CONSOLE_H */ |