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hc
2024-09-20 cf4ce59b3b70238352c7f1729f0f7223214828ad 
 kernel/include/linux/console_struct.h
....@@ -21,6 +21,43 @@
2121 struct uni_screen;
2222 
2323 #define NPAR 16
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+#define VC_TABSTOPS_COUNT	256U
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+
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+enum vc_intensity {
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+	VCI_HALF_BRIGHT,
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+	VCI_NORMAL,
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+	VCI_BOLD,
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+	VCI_MASK = 0x3,
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+};
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+
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+/**
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+ * struct vc_state -- state of a VC
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+ * @x: cursor's x-position
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+ * @y: cursor's y-position
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+ * @color: foreground & background colors
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+ * @Gx_charset: what's G0/G1 slot set to (like GRAF_MAP, LAT1_MAP)
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+ * @charset: what character set to use (0=G0 or 1=G1)
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+ * @intensity: see enum vc_intensity for values
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+ * @reverse: reversed foreground/background colors
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+ *
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+ * These members are defined separately from struct vc_data as we save &
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+ * restore them at times.
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+ */
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+struct vc_state {
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+	unsigned int	x, y;
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+
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+	unsigned char	color;
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+
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+	unsigned char	Gx_charset[2];
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+	unsigned int	charset		: 1;
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+
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+	/* attribute flags */
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+	enum vc_intensity intensity;
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+	bool		italic;
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+	bool		underline;
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+	bool		blink;
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+	bool		reverse;
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+};
2461 
2562 /*
2663  * Example: vc_data of a console that was scrolled 3 lines down.
....@@ -57,6 +94,8 @@
5794 struct vc_data {
5895 	struct tty_port port;			/* Upper level data */
5996 
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+	struct vc_state state, saved_state;
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+
6099 	unsigned short	vc_num;			/* Console number */
61100 	unsigned int	vc_cols;		/* [#] Console size */
62101 	unsigned int	vc_rows;
....@@ -74,8 +113,6 @@
74113 	/* attributes for all characters on screen */
75114 	unsigned char	vc_attr;		/* Current attributes */
76115 	unsigned char	vc_def_color;		/* Default colors */
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-	unsigned char	vc_color;		/* Foreground & background */
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-	unsigned char	vc_s_color;		/* Saved foreground & background */
79116 	unsigned char	vc_ulcolor;		/* Color for underline mode */
80117 	unsigned char   vc_itcolor;
81118 	unsigned char	vc_halfcolor;		/* Color for half intensity mode */
....@@ -83,8 +120,6 @@
83120 	unsigned int	vc_cursor_type;
84121 	unsigned short	vc_complement_mask;	/* [#] Xor mask for mouse pointer */
85122 	unsigned short	vc_s_complement_mask;	/* Saved mouse pointer mask */
86
-	unsigned int	vc_x, vc_y;		/* Cursor position */
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-	unsigned int	vc_saved_x, vc_saved_y;
88123 	unsigned long	vc_pos;			/* Cursor address */
89124 	/* fonts */	
90125 	unsigned short	vc_hi_font_mask;	/* [#] Attribute set for upper 256 chars of font or 0 if not supported */
....@@ -99,8 +134,6 @@
99134 	int		vt_newvt;
100135 	wait_queue_head_t paste_wait;
101136 	/* mode flags */
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-	unsigned int	vc_charset	: 1;	/* Character set G0 / G1 */
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-	unsigned int	vc_s_charset	: 1;	/* Saved character set */
104137 	unsigned int	vc_disp_ctrl	: 1;	/* Display chars < 32? */
105138 	unsigned int	vc_toggle_meta	: 1;	/* Toggle high bit? */
106139 	unsigned int	vc_decscnm	: 1;	/* Screen Mode */
....@@ -108,32 +141,17 @@
108141 	unsigned int	vc_decawm	: 1;	/* Autowrap Mode */
109142 	unsigned int	vc_deccm	: 1;	/* Cursor Visible */
110143 	unsigned int	vc_decim	: 1;	/* Insert Mode */
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-	/* attribute flags */
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-	unsigned int	vc_intensity	: 2;	/* 0=half-bright, 1=normal, 2=bold */
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-	unsigned int    vc_italic:1;
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-	unsigned int	vc_underline	: 1;
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-	unsigned int	vc_blink	: 1;
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-	unsigned int	vc_reverse	: 1;
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-	unsigned int	vc_s_intensity	: 2;	/* saved rendition */
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-	unsigned int    vc_s_italic:1;
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-	unsigned int	vc_s_underline	: 1;
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-	unsigned int	vc_s_blink	: 1;
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-	unsigned int	vc_s_reverse	: 1;
122144 	/* misc */
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-	unsigned int	vc_ques		: 1;
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+	unsigned int	vc_priv		: 3;
124146 	unsigned int	vc_need_wrap	: 1;
125147 	unsigned int	vc_can_do_color	: 1;
126148 	unsigned int	vc_report_mouse : 2;
127149 	unsigned char	vc_utf		: 1;	/* Unicode UTF-8 encoding */
128150 	unsigned char	vc_utf_count;
129151 		 int	vc_utf_char;
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-	unsigned int	vc_tab_stop[8];		/* Tab stops. 256 columns. */
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+	DECLARE_BITMAP(vc_tab_stop, VC_TABSTOPS_COUNT);	/* Tab stops. 256 columns. */
131153 	unsigned char   vc_palette[16*3];       /* Colour palette for VGA+ */
132154 	unsigned short * vc_translate;
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-	unsigned char 	vc_G0_charset;
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-	unsigned char 	vc_G1_charset;
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-	unsigned char 	vc_saved_G0;
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-	unsigned char 	vc_saved_G1;
137155 	unsigned int    vc_resize_user;         /* resize request from user */
138156 	unsigned int	vc_bell_pitch;		/* Console bell pitch */
139157 	unsigned int	vc_bell_duration;	/* Console bell duration */
....@@ -142,7 +160,6 @@
142160 	struct uni_pagedir *vc_uni_pagedir;
143161 	struct uni_pagedir **vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */
144162 	struct uni_screen *vc_uni_screen;	/* unicode screen content */
145
-	bool vc_panic_force_write; /* when oops/panic this VC can accept forced output/blanking */
146163 	/* additional information is in vt_kern.h */
147164 };
148165 
....@@ -151,28 +168,30 @@
151168 	struct work_struct SAK_work;
152169 
153170 	/* might add  scrmem, kbd  at some time,
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-	   to have everything in one place - the disadvantage
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-	   would be that vc_cons etc can no longer be static */
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+	   to have everything in one place */
156172 };
157173 
158174 extern struct vc vc_cons [MAX_NR_CONSOLES];
159175 extern void vc_SAK(struct work_struct *work);
160176 
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-#define CUR_DEF		0
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-#define CUR_NONE	1
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-#define CUR_UNDERLINE	2
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-#define CUR_LOWER_THIRD	3
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-#define CUR_LOWER_HALF	4
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-#define CUR_TWO_THIRDS	5
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-#define CUR_BLOCK	6
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-#define CUR_HWMASK	0x0f
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-#define CUR_SWMASK	0xfff0
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+#define CUR_MAKE(size, change, set)	((size) | ((change) << 8) |	\
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+		((set) << 16))
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+#define CUR_SIZE(c)		 ((c) & 0x00000f)
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+# define CUR_DEF			       0
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+# define CUR_NONE			       1
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+# define CUR_UNDERLINE			       2
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+# define CUR_LOWER_THIRD		       3
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+# define CUR_LOWER_HALF			       4
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+# define CUR_TWO_THIRDS			       5
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+# define CUR_BLOCK			       6
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+#define CUR_SW				0x000010
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+#define CUR_ALWAYS_BG			0x000020
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+#define CUR_INVERT_FG_BG		0x000040
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+#define CUR_FG				0x000700
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+#define CUR_BG				0x007000
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+#define CUR_CHANGE(c)		 ((c) & 0x00ff00)
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+#define CUR_SET(c)		(((c) & 0xff0000) >> 8)
170194 
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-#define CUR_DEFAULT CUR_UNDERLINE
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-
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-static inline bool con_is_visible(const struct vc_data *vc)
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-{
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-	return *vc->vc_display_fg == vc;
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-}
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+bool con_is_visible(const struct vc_data *vc);
177196 
178197 #endif /* _LINUX_CONSOLE_STRUCT_H */