include/linux/console.h

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