mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
196 lines
7.0 KiB
196 lines
7.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* console_struct.h |
|
* |
|
* Data structure describing single virtual console except for data |
|
* used by vt.c. |
|
* |
|
* Fields marked with [#] must be set by the low-level driver. |
|
* Fields marked with [!] can be changed by the low-level driver |
|
* to achieve effects such as fast scrolling by changing the origin. |
|
*/ |
|
|
|
#ifndef _LINUX_CONSOLE_STRUCT_H |
|
#define _LINUX_CONSOLE_STRUCT_H |
|
|
|
#include <linux/wait.h> |
|
#include <linux/vt.h> |
|
#include <linux/workqueue.h> |
|
|
|
struct uni_pagedir; |
|
struct uni_screen; |
|
|
|
#define NPAR 16 |
|
#define VC_TABSTOPS_COUNT 256U |
|
|
|
enum vc_intensity { |
|
VCI_HALF_BRIGHT, |
|
VCI_NORMAL, |
|
VCI_BOLD, |
|
VCI_MASK = 0x3, |
|
}; |
|
|
|
/** |
|
* struct vc_state -- state of a VC |
|
* @x: cursor's x-position |
|
* @y: cursor's y-position |
|
* @color: foreground & background colors |
|
* @Gx_charset: what's G0/G1 slot set to (like GRAF_MAP, LAT1_MAP) |
|
* @charset: what character set to use (0=G0 or 1=G1) |
|
* @intensity: see enum vc_intensity for values |
|
* @reverse: reversed foreground/background colors |
|
* |
|
* These members are defined separately from struct vc_data as we save & |
|
* restore them at times. |
|
*/ |
|
struct vc_state { |
|
unsigned int x, y; |
|
|
|
unsigned char color; |
|
|
|
unsigned char Gx_charset[2]; |
|
unsigned int charset : 1; |
|
|
|
/* attribute flags */ |
|
enum vc_intensity intensity; |
|
bool italic; |
|
bool underline; |
|
bool blink; |
|
bool reverse; |
|
}; |
|
|
|
/* |
|
* Example: vc_data of a console that was scrolled 3 lines down. |
|
* |
|
* Console buffer |
|
* vc_screenbuf ---------> +----------------------+-. |
|
* | initializing W | \ |
|
* | initializing X | | |
|
* | initializing Y | > scroll-back area |
|
* | initializing Z | | |
|
* | | / |
|
* vc_visible_origin ---> ^+----------------------+-: |
|
* (changes by scroll) || Welcome to linux | \ |
|
* || | | |
|
* vc_rows --->< | login: root | | visible on console |
|
* || password: | > (vc_screenbuf_size is |
|
* vc_origin -----------> || | | vc_size_row * vc_rows) |
|
* (start when no scroll) || Last login: 12:28 | / |
|
* v+----------------------+-: |
|
* | Have a lot of fun... | \ |
|
* vc_pos -----------------|--------v | > scroll-front area |
|
* | ~ # cat_ | / |
|
* vc_scr_end -----------> +----------------------+-: |
|
* (vc_origin + | | \ EMPTY, to be filled by |
|
* vc_screenbuf_size) | | / vc_video_erase_char |
|
* +----------------------+-' |
|
* <---- 2 * vc_cols -----> |
|
* <---- vc_size_row -----> |
|
* |
|
* Note that every character in the console buffer is accompanied with an |
|
* attribute in the buffer right after the character. This is not depicted |
|
* in the figure. |
|
*/ |
|
struct vc_data { |
|
struct tty_port port; /* Upper level data */ |
|
|
|
struct vc_state state, saved_state; |
|
|
|
unsigned short vc_num; /* Console number */ |
|
unsigned int vc_cols; /* [#] Console size */ |
|
unsigned int vc_rows; |
|
unsigned int vc_size_row; /* Bytes per row */ |
|
unsigned int vc_scan_lines; /* # of scan lines */ |
|
unsigned long vc_origin; /* [!] Start of real screen */ |
|
unsigned long vc_scr_end; /* [!] End of real screen */ |
|
unsigned long vc_visible_origin; /* [!] Top of visible window */ |
|
unsigned int vc_top, vc_bottom; /* Scrolling region */ |
|
const struct consw *vc_sw; |
|
unsigned short *vc_screenbuf; /* In-memory character/attribute buffer */ |
|
unsigned int vc_screenbuf_size; |
|
unsigned char vc_mode; /* KD_TEXT, ... */ |
|
/* attributes for all characters on screen */ |
|
unsigned char vc_attr; /* Current attributes */ |
|
unsigned char vc_def_color; /* Default colors */ |
|
unsigned char vc_ulcolor; /* Color for underline mode */ |
|
unsigned char vc_itcolor; |
|
unsigned char vc_halfcolor; /* Color for half intensity mode */ |
|
/* cursor */ |
|
unsigned int vc_cursor_type; |
|
unsigned short vc_complement_mask; /* [#] Xor mask for mouse pointer */ |
|
unsigned short vc_s_complement_mask; /* Saved mouse pointer mask */ |
|
unsigned long vc_pos; /* Cursor address */ |
|
/* fonts */ |
|
unsigned short vc_hi_font_mask; /* [#] Attribute set for upper 256 chars of font or 0 if not supported */ |
|
struct console_font vc_font; /* Current VC font set */ |
|
unsigned short vc_video_erase_char; /* Background erase character */ |
|
/* VT terminal data */ |
|
unsigned int vc_state; /* Escape sequence parser state */ |
|
unsigned int vc_npar,vc_par[NPAR]; /* Parameters of current escape sequence */ |
|
/* data for manual vt switching */ |
|
struct vt_mode vt_mode; |
|
struct pid *vt_pid; |
|
int vt_newvt; |
|
wait_queue_head_t paste_wait; |
|
/* mode flags */ |
|
unsigned int vc_disp_ctrl : 1; /* Display chars < 32? */ |
|
unsigned int vc_toggle_meta : 1; /* Toggle high bit? */ |
|
unsigned int vc_decscnm : 1; /* Screen Mode */ |
|
unsigned int vc_decom : 1; /* Origin Mode */ |
|
unsigned int vc_decawm : 1; /* Autowrap Mode */ |
|
unsigned int vc_deccm : 1; /* Cursor Visible */ |
|
unsigned int vc_decim : 1; /* Insert Mode */ |
|
/* misc */ |
|
unsigned int vc_priv : 3; |
|
unsigned int vc_need_wrap : 1; |
|
unsigned int vc_can_do_color : 1; |
|
unsigned int vc_report_mouse : 2; |
|
unsigned char vc_utf : 1; /* Unicode UTF-8 encoding */ |
|
unsigned char vc_utf_count; |
|
int vc_utf_char; |
|
DECLARE_BITMAP(vc_tab_stop, VC_TABSTOPS_COUNT); /* Tab stops. 256 columns. */ |
|
unsigned char vc_palette[16*3]; /* Colour palette for VGA+ */ |
|
unsigned short * vc_translate; |
|
unsigned int vc_resize_user; /* resize request from user */ |
|
unsigned int vc_bell_pitch; /* Console bell pitch */ |
|
unsigned int vc_bell_duration; /* Console bell duration */ |
|
unsigned short vc_cur_blink_ms; /* Cursor blink duration */ |
|
struct vc_data **vc_display_fg; /* [!] Ptr to var holding fg console for this display */ |
|
struct uni_pagedir *vc_uni_pagedir; |
|
struct uni_pagedir **vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */ |
|
struct uni_screen *vc_uni_screen; /* unicode screen content */ |
|
/* additional information is in vt_kern.h */ |
|
}; |
|
|
|
struct vc { |
|
struct vc_data *d; |
|
struct work_struct SAK_work; |
|
|
|
/* might add scrmem, kbd at some time, |
|
to have everything in one place */ |
|
}; |
|
|
|
extern struct vc vc_cons [MAX_NR_CONSOLES]; |
|
extern void vc_SAK(struct work_struct *work); |
|
|
|
#define CUR_MAKE(size, change, set) ((size) | ((change) << 8) | \ |
|
((set) << 16)) |
|
#define CUR_SIZE(c) ((c) & 0x00000f) |
|
# define CUR_DEF 0 |
|
# define CUR_NONE 1 |
|
# define CUR_UNDERLINE 2 |
|
# define CUR_LOWER_THIRD 3 |
|
# define CUR_LOWER_HALF 4 |
|
# define CUR_TWO_THIRDS 5 |
|
# define CUR_BLOCK 6 |
|
#define CUR_SW 0x000010 |
|
#define CUR_ALWAYS_BG 0x000020 |
|
#define CUR_INVERT_FG_BG 0x000040 |
|
#define CUR_FG 0x000700 |
|
#define CUR_BG 0x007000 |
|
#define CUR_CHANGE(c) ((c) & 0x00ff00) |
|
#define CUR_SET(c) (((c) & 0xff0000) >> 8) |
|
|
|
bool con_is_visible(const struct vc_data *vc); |
|
|
|
#endif /* _LINUX_CONSOLE_STRUCT_H */
|
|
|