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/kdev_t.h>
19 #include <linux/spinlock.h>
20
21 struct vc_data;
22 struct console_font_op;
23
24 /*
25 * this is what the terminal answers to a ESC-Z or csi0c query.
26 */
27 #define VT100ID "\033[?1;2c"
28 #define VT102ID "\033[?6c"
29
30 struct consw {
31 const char *(*con_startup)(void);
32 void (*con_init)(struct vc_data *, int);
33 void (*con_deinit)(struct vc_data *);
34 void (*con_clear)(struct vc_data *, int, int, int, int);
35 void (*con_putc)(struct vc_data *, int, int, int);
36 void (*con_putcs)(struct vc_data *, const unsigned short *, int, int, int);
37 void (*con_cursor)(struct vc_data *, int);
38 int (*con_scroll)(struct vc_data *, int, int, int, int);
39 void (*con_bmove)(struct vc_data *, int, int, int, int, int, int);
40 int (*con_switch)(struct vc_data *);
41 int (*con_blank)(struct vc_data *, int);
42 int (*con_font_op)(struct vc_data *, struct console_font_op *);
43 int (*con_set_palette)(struct vc_data *, unsigned char *);
44 int (*con_scrolldelta)(struct vc_data *, int);
45 int (*con_set_origin)(struct vc_data *);
46 void (*con_save_screen)(struct vc_data *);
47 u8 (*con_build_attr)(struct vc_data *, u8, u8, u8, u8, u8);
48 void (*con_invert_region)(struct vc_data *, u16 *, int);
49 u16 *(*con_screen_pos)(struct vc_data *, int);
50 unsigned long (*con_getxy)(struct vc_data *, unsigned long, int *, int *);
51 };
52
53 extern const struct consw *conswitchp;
54
55 extern const struct consw dummy_con; /* dummy console buffer */
56 extern const struct consw fb_con; /* frame buffer based console */
57 extern const struct consw vga_con; /* VGA text console */
58 extern const struct consw newport_con; /* SGI Newport console */
59 extern const struct consw prom_con; /* SPARC PROM console */
60
61 void take_over_console(const struct consw *sw, int first, int last, int deflt);
62 void give_up_console(const struct consw *sw);
63
64 /* scroll */
65 #define SM_UP (1)
66 #define SM_DOWN (2)
67
68 /* cursor */
69 #define CM_DRAW (1)
70 #define CM_ERASE (2)
71 #define CM_MOVE (3)
72
73 /*
74 * Array of consoles built from command line options (console=)
75 */
76 struct console_cmdline
77 {
78 char name[8]; /* Name of the driver */
79 int index; /* Minor dev. to use */
80 char *options; /* Options for the driver */
81 };
82 #define MAX_CMDLINECONSOLES 8
83 extern struct console_cmdline console_list[MAX_CMDLINECONSOLES];
84
85 /*
86 * The interface for a console, or any other device that
87 * wants to capture console messages (printer driver?)
88 */
89
90 #define CON_PRINTBUFFER (1)
91 #define CON_CONSDEV (2) /* Last on the command line */
92 #define CON_ENABLED (4)
93
94 extern spinlock_t console_lock;
95
96 struct console
97 {
98 char name[8];
99 void (*write)(struct console *, const char *, unsigned);
100 int (*read)(struct console *, const char *, unsigned);
101 kdev_t (*device)(struct console *);
102 int (*wait_key)(struct console *);
103 void (*unblank)(void);
104 int (*setup)(struct console *, char *);
105 short flags;
106 short index;
107 int cflag;
108 struct console *next;
109 };
110
111 extern void register_console(struct console *);
112 extern int unregister_console(struct console *);
113 extern struct console *console_drivers;
114
115 /* VESA Blanking Levels */
116 #define VESA_NO_BLANKING 0
117 #define VESA_VSYNC_SUSPEND 1
118 #define VESA_HSYNC_SUSPEND 2
119 #define VESA_POWERDOWN 3
120
121 #endif /* _LINUX_CONSOLE_H */
122
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