Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236/* 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/vt.h>#include <linux/wait.h>#include <linux/workqueue.h>
struct uni_pagedict;
#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;};
/** * struct vc_font - Describes a font * @width: The width of a single glyph in bits * @height: The height of a single glyph in scanlines * @charcount: The number of glyphs in the font * @data: The raw font data * * Font data is organized as an array of glyphs. Each glyph is a bitmap with * set bits indicating the foreground color. Unset bits indicate background * color. The fields @width and @height store a single glyph's number of * horizontal bits and vertical scanlines. If width is not a multiple of 8, * there are trailing bits to fill up the byte. These bits should not be drawn. * * The field @data points to the first glyph's first byte. The value @charcount * gives the number of glyphs in the font. There are no empty scanlines between * two adjacent glyphs. */struct vc_font { unsigned int width; unsigned int height; unsigned int charcount; const unsigned char *data;};
unsigned int vc_font_pitch(const struct vc_font *font);unsigned int vc_font_size(const struct vc_font *font);
/* * 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 int vc_cell_height; /* CRTC character cell height */ 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 vc_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 int vc_bracketed_paste : 1; 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_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_pagedict *uni_pagedict; struct uni_pagedict **uni_pagedict_loc; /* [!] Location of uni_pagedict variable for this console */ u32 **vc_uni_lines; /* unicode screen content */ u16 *vc_saved_screen; u32 **vc_saved_uni_lines; unsigned int vc_saved_cols; unsigned int vc_saved_rows; /* 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);
/* * Cursors */
#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)
unsigned int vc_cursor_valid_size(unsigned int cursor_size);unsigned int vc_cursor_start(unsigned int cell_height, unsigned int cursor_size);unsigned int vc_cursor_end(unsigned int cell_height, unsigned int cursor_size);
bool con_is_visible(const struct vc_data *vc);
#endif /* _LINUX_CONSOLE_STRUCT_H */