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Diffstat (limited to 'src/drivers/emulation/qemu/fbcon.h')
| -rw-r--r-- | src/drivers/emulation/qemu/fbcon.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/drivers/emulation/qemu/fbcon.h b/src/drivers/emulation/qemu/fbcon.h new file mode 100644 index 0000000000..56328323dc --- /dev/null +++ b/src/drivers/emulation/qemu/fbcon.h @@ -0,0 +1,176 @@ +/* + * linux/drivers/video/fbcon.h -- Low level frame buffer based console driver + * + * Copyright (C) 1997 Geert Uytterhoeven + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#ifndef _VIDEO_FBCON_H +#define _VIDEO_FBCON_H + + + +struct display { + /* Filled in by the frame buffer device */ + + struct fb_var_screeninfo var; /* variable infos. yoffset and vmode */ + /* are updated by fbcon.c */ + struct fb_cmap cmap; /* colormap */ + char *screen_base; /* pointer to top of virtual screen */ + /* (virtual address) */ + int visual; + int type; /* see FB_TYPE_* */ + int type_aux; /* Interleave for interleaved Planes */ + u16 ypanstep; /* zero if no hardware ypan */ + u16 ywrapstep; /* zero if no hardware ywrap */ + u32 line_length; /* length of a line in bytes */ + u16 can_soft_blank; /* zero if no hardware blanking */ + u16 inverse; /* != 0 text black on white as default */ +// struct display_switch *dispsw; /* low level operations */ +// void *dispsw_data; /* optional dispsw helper data */ + +#if 0 + struct fb_fix_cursorinfo fcrsr; + struct fb_var_cursorinfo *vcrsr; + struct fb_cursorstate crsrstate; +#endif + + /* Filled in by the low-level console driver */ + + struct vc_data *conp; /* pointer to console data */ +// struct fb_info *fb_info; /* frame buffer for this console */ + int vrows; /* number of virtual rows */ + unsigned short cursor_x; /* current cursor position */ + unsigned short cursor_y; + int fgcol; /* text colors */ + int bgcol; + u32 next_line; /* offset to one line below */ + u32 next_plane; /* offset to next plane */ + u8 *fontdata; /* Font associated to this display */ + unsigned short _fontheightlog; + unsigned short _fontwidthlog; + unsigned short _fontheight; + unsigned short _fontwidth; + int userfont; /* != 0 if fontdata kmalloc()ed */ + u16 scrollmode; /* Scroll Method */ + short yscroll; /* Hardware scrolling */ + unsigned char fgshift, bgshift; + unsigned short charmask; /* 0xff or 0x1ff */ +}; + + +#define fontheight(p) ((p)->_fontheight) +#define fontheightlog(p) ((p)->_fontheightlog) + +#ifdef CONFIG_FBCON_FONTWIDTH8_ONLY + +/* fontwidth w is supported by dispsw */ +#define FONTWIDTH(w) (1 << ((8) - 1)) +/* fontwidths w1-w2 inclusive are supported by dispsw */ +#define FONTWIDTHRANGE(w1,w2) FONTWIDTH(8) + +#define fontwidth(p) (8) +#define fontwidthlog(p) (0) + +#else + +/* fontwidth w is supported by dispsw */ +#define FONTWIDTH(w) (1 << ((w) - 1)) +/* fontwidths w1-w2 inclusive are supported by dispsw */ +#define FONTWIDTHRANGE(w1,w2) (FONTWIDTH(w2+1) - FONTWIDTH(w1)) + +#define fontwidth(p) ((p)->_fontwidth) +#define fontwidthlog(p) ((p)->_fontwidthlog) + +#endif + + /* + * Attribute Decoding + */ + +/* Color */ +#define attr_fgcol(p,s) \ + (((s) >> ((p)->fgshift)) & 0x0f) +#define attr_bgcol(p,s) \ + (((s) >> ((p)->bgshift)) & 0x0f) +#define attr_bgcol_ec(p,conp) \ + ((conp) ? (((conp)->vc_video_erase_char >> ((p)->bgshift)) & 0x0f) : 0) + +/* Monochrome */ +#define attr_bold(p,s) \ + ((s) & 0x200) +#define attr_reverse(p,s) \ + (((s) & 0x800) ^ ((p)->inverse ? 0x800 : 0)) +#define attr_underline(p,s) \ + ((s) & 0x400) +#define attr_blink(p,s) \ + ((s) & 0x8000) + + /* + * Scroll Method + */ + +/* Internal flags */ +#define __SCROLL_YPAN 0x001 +#define __SCROLL_YWRAP 0x002 +#define __SCROLL_YMOVE 0x003 +#define __SCROLL_YREDRAW 0x004 +#define __SCROLL_YMASK 0x00f +#define __SCROLL_YFIXED 0x010 +#define __SCROLL_YNOMOVE 0x020 +#define __SCROLL_YPANREDRAW 0x040 +#define __SCROLL_YNOPARTIAL 0x080 + +/* Only these should be used by the drivers */ +/* Which one should you use? If you have a fast card and slow bus, + then probably just 0 to indicate fbcon should choose between + YWRAP/YPAN+MOVE/YMOVE. On the other side, if you have a fast bus + and even better if your card can do fonting (1->8/32bit painting), + you should consider either SCROLL_YREDRAW (if your card is + able to do neither YPAN/YWRAP), or SCROLL_YNOMOVE. + The best is to test it with some real life scrolling (usually, not + all lines on the screen are filled completely with non-space characters, + and REDRAW performs much better on such lines, so don't cat a file + with every line covering all screen columns, it would not be the right + benchmark). + */ +#define SCROLL_YREDRAW (__SCROLL_YFIXED|__SCROLL_YREDRAW) +#define SCROLL_YNOMOVE (__SCROLL_YNOMOVE|__SCROLL_YPANREDRAW) + +/* SCROLL_YNOPARTIAL, used in combination with the above, is for video + cards which can not handle using panning to scroll a portion of the + screen without excessive flicker. Panning will only be used for + whole screens. + */ +/* Namespace consistency */ +#define SCROLL_YNOPARTIAL __SCROLL_YNOPARTIAL + + +#if defined(__i386__) || defined(__alpha__) || \ + defined(__x86_64__) || defined(__hppa__) || \ + defined(__powerpc64__) + +#define fb_readb __raw_readb +#define fb_readw __raw_readw +#define fb_readl __raw_readl +#define fb_writeb __raw_writeb +#define fb_writew __raw_writew +#define fb_writel __raw_writel +#define fb_memset memset_io + +#else + +#define fb_readb(addr) (*(volatile u8 *) (addr)) +#define fb_readw(addr) (*(volatile u16 *) (addr)) +#define fb_readl(addr) (*(volatile u32 *) (addr)) +#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b)) +#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b)) +#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b)) +#define fb_memset memset + +#endif + +#endif /* _VIDEO_FBCON_H */ |