Linux Kernel  3.7.1
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console_struct.h
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1 /*
2  * console_struct.h
3  *
4  * Data structure describing single virtual console except for data
5  * used by vt.c.
6  *
7  * Fields marked with [#] must be set by the low-level driver.
8  * Fields marked with [!] can be changed by the low-level driver
9  * to achieve effects such as fast scrolling by changing the origin.
10  */
11 
12 #ifndef _LINUX_CONSOLE_STRUCT_H
13 #define _LINUX_CONSOLE_STRUCT_H
14 
15 #include <linux/wait.h>
16 #include <linux/vt.h>
17 #include <linux/workqueue.h>
18 
19 struct vt_struct;
20 
21 #define NPAR 16
22 
23 struct vc_data {
24  struct tty_port port; /* Upper level data */
25 
26  unsigned short vc_num; /* Console number */
27  unsigned int vc_cols; /* [#] Console size */
28  unsigned int vc_rows;
29  unsigned int vc_size_row; /* Bytes per row */
30  unsigned int vc_scan_lines; /* # of scan lines */
31  unsigned long vc_origin; /* [!] Start of real screen */
32  unsigned long vc_scr_end; /* [!] End of real screen */
33  unsigned long vc_visible_origin; /* [!] Top of visible window */
34  unsigned int vc_top, vc_bottom; /* Scrolling region */
35  const struct consw *vc_sw;
36  unsigned short *vc_screenbuf; /* In-memory character/attribute buffer */
37  unsigned int vc_screenbuf_size;
38  unsigned char vc_mode; /* KD_TEXT, ... */
39  /* attributes for all characters on screen */
40  unsigned char vc_attr; /* Current attributes */
41  unsigned char vc_def_color; /* Default colors */
42  unsigned char vc_color; /* Foreground & background */
43  unsigned char vc_s_color; /* Saved foreground & background */
44  unsigned char vc_ulcolor; /* Color for underline mode */
45  unsigned char vc_itcolor;
46  unsigned char vc_halfcolor; /* Color for half intensity mode */
47  /* cursor */
48  unsigned int vc_cursor_type;
49  unsigned short vc_complement_mask; /* [#] Xor mask for mouse pointer */
50  unsigned short vc_s_complement_mask; /* Saved mouse pointer mask */
51  unsigned int vc_x, vc_y; /* Cursor position */
52  unsigned int vc_saved_x, vc_saved_y;
53  unsigned long vc_pos; /* Cursor address */
54  /* fonts */
55  unsigned short vc_hi_font_mask; /* [#] Attribute set for upper 256 chars of font or 0 if not supported */
56  struct console_font vc_font; /* Current VC font set */
57  unsigned short vc_video_erase_char; /* Background erase character */
58  /* VT terminal data */
59  unsigned int vc_state; /* Escape sequence parser state */
60  unsigned int vc_npar,vc_par[NPAR]; /* Parameters of current escape sequence */
61  /* data for manual vt switching */
62  struct vt_mode vt_mode;
63  struct pid *vt_pid;
64  int vt_newvt;
65  wait_queue_head_t paste_wait;
66  /* mode flags */
67  unsigned int vc_charset : 1; /* Character set G0 / G1 */
68  unsigned int vc_s_charset : 1; /* Saved character set */
69  unsigned int vc_disp_ctrl : 1; /* Display chars < 32? */
70  unsigned int vc_toggle_meta : 1; /* Toggle high bit? */
71  unsigned int vc_decscnm : 1; /* Screen Mode */
72  unsigned int vc_decom : 1; /* Origin Mode */
73  unsigned int vc_decawm : 1; /* Autowrap Mode */
74  unsigned int vc_deccm : 1; /* Cursor Visible */
75  unsigned int vc_decim : 1; /* Insert Mode */
76  unsigned int vc_deccolm : 1; /* 80/132 Column Mode */
77  /* attribute flags */
78  unsigned int vc_intensity : 2; /* 0=half-bright, 1=normal, 2=bold */
79  unsigned int vc_italic:1;
80  unsigned int vc_underline : 1;
81  unsigned int vc_blink : 1;
82  unsigned int vc_reverse : 1;
83  unsigned int vc_s_intensity : 2; /* saved rendition */
84  unsigned int vc_s_italic:1;
85  unsigned int vc_s_underline : 1;
86  unsigned int vc_s_blink : 1;
87  unsigned int vc_s_reverse : 1;
88  /* misc */
89  unsigned int vc_ques : 1;
90  unsigned int vc_need_wrap : 1;
91  unsigned int vc_can_do_color : 1;
92  unsigned int vc_report_mouse : 2;
93  unsigned char vc_utf : 1; /* Unicode UTF-8 encoding */
94  unsigned char vc_utf_count;
95  int vc_utf_char;
96  unsigned int vc_tab_stop[8]; /* Tab stops. 256 columns. */
97  unsigned char vc_palette[16*3]; /* Colour palette for VGA+ */
98  unsigned short * vc_translate;
99  unsigned char vc_G0_charset;
100  unsigned char vc_G1_charset;
101  unsigned char vc_saved_G0;
102  unsigned char vc_saved_G1;
103  unsigned int vc_resize_user; /* resize request from user */
104  unsigned int vc_bell_pitch; /* Console bell pitch */
105  unsigned int vc_bell_duration; /* Console bell duration */
106  struct vc_data **vc_display_fg; /* [!] Ptr to var holding fg console for this display */
107  unsigned long vc_uni_pagedir;
108  unsigned long *vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */
109  bool vc_panic_force_write; /* when oops/panic this VC can accept forced output/blanking */
110  /* additional information is in vt_kern.h */
111 };
112 
113 struct vc {
114  struct vc_data *d;
115  struct work_struct SAK_work;
116 
117  /* might add scrmem, vt_struct, kbd at some time,
118  to have everything in one place - the disadvantage
119  would be that vc_cons etc can no longer be static */
120 };
121 
122 extern struct vc vc_cons [MAX_NR_CONSOLES];
123 extern void vc_SAK(struct work_struct *work);
124 
125 #define CUR_DEF 0
126 #define CUR_NONE 1
127 #define CUR_UNDERLINE 2
128 #define CUR_LOWER_THIRD 3
129 #define CUR_LOWER_HALF 4
130 #define CUR_TWO_THIRDS 5
131 #define CUR_BLOCK 6
132 #define CUR_HWMASK 0x0f
133 #define CUR_SWMASK 0xfff0
134 
135 #define CUR_DEFAULT CUR_UNDERLINE
136 
137 #define CON_IS_VISIBLE(conp) (*conp->vc_display_fg == conp)
138 
139 #endif /* _LINUX_CONSOLE_STRUCT_H */
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