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_cmdline[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 #define CON_BOOT (8) /* Only used for initial boot */ 94 95 struct console 96 { 97 char name[8]; 98 void (*write)(struct console *, const char *, unsigned); 99 int (*read)(struct console *, const char *, unsigned); 100 kdev_t (*device)(struct console *); 101 void (*unblank)(void); 102 int (*setup)(struct console *, char *); 103 short flags; 104 short index; 105 int cflag; 106 struct console *next; 107 }; 108 109 extern void register_console(struct console *); 110 extern int unregister_console(struct console *); 111 extern struct console *console_drivers; 112 extern void acquire_console_sem(void); 113 extern void release_console_sem(void); 114 extern void console_conditional_schedule(void); 115 extern void console_unblank(void); 116 extern void disable_console_blank(void); 117 118 /* VESA Blanking Levels */ 119 #define VESA_NO_BLANKING 0 120 #define VESA_VSYNC_SUSPEND 1 121 #define VESA_HSYNC_SUSPEND 2 122 #define VESA_POWERDOWN 3 123 124 #endif /* _LINUX_CONSOLE_H */ 125