root/include/linux/screen_info.h

INCLUDED FROM

#ifndef _SCREEN_INFO_H
#define _SCREEN_INFO_H

#include <linux/types.h>

/*
 * These are set up by the setup-routine at boot-time:
 */

struct screen_info {
        __u8  orig_x;           /* 0x00 */
        __u8  orig_y;           /* 0x01 */
        __u16 ext_mem_k;        /* 0x02 */
        __u16 orig_video_page;  /* 0x04 */
        __u8  orig_video_mode;  /* 0x06 */
        __u8  orig_video_cols;  /* 0x07 */
        __u16 unused2;          /* 0x08 */
        __u16 orig_video_ega_bx;/* 0x0a */
        __u16 unused3;          /* 0x0c */
        __u8  orig_video_lines; /* 0x0e */
        __u8  orig_video_isVGA; /* 0x0f */
        __u16 orig_video_points;/* 0x10 */

        /* VESA graphic mode -- linear frame buffer */
        __u16 lfb_width;        /* 0x12 */
        __u16 lfb_height;       /* 0x14 */
        __u16 lfb_depth;        /* 0x16 */
        __u32 lfb_base;         /* 0x18 */
        __u32 lfb_size;         /* 0x1c */
        __u16 cl_magic, cl_offset; /* 0x20 */
        __u16 lfb_linelength;   /* 0x24 */
        __u8  red_size;         /* 0x26 */
        __u8  red_pos;          /* 0x27 */
        __u8  green_size;       /* 0x28 */
        __u8  green_pos;        /* 0x29 */
        __u8  blue_size;        /* 0x2a */
        __u8  blue_pos;         /* 0x2b */
        __u8  rsvd_size;        /* 0x2c */
        __u8  rsvd_pos;         /* 0x2d */
        __u16 vesapm_seg;       /* 0x2e */
        __u16 vesapm_off;       /* 0x30 */
        __u16 pages;            /* 0x32 */
        __u16 vesa_attributes;  /* 0x34 */
        __u32 capabilities;     /* 0x36 */
        __u8  _reserved[6];     /* 0x3a */
} __attribute__((packed));

#define VIDEO_TYPE_MDA          0x10    /* Monochrome Text Display      */
#define VIDEO_TYPE_CGA          0x11    /* CGA Display                  */
#define VIDEO_TYPE_EGAM         0x20    /* EGA/VGA in Monochrome Mode   */
#define VIDEO_TYPE_EGAC         0x21    /* EGA in Color Mode            */
#define VIDEO_TYPE_VGAC         0x22    /* VGA+ in Color Mode           */
#define VIDEO_TYPE_VLFB         0x23    /* VESA VGA in graphic mode     */

#define VIDEO_TYPE_PICA_S3      0x30    /* ACER PICA-61 local S3 video  */
#define VIDEO_TYPE_MIPS_G364    0x31    /* MIPS Magnum 4000 G364 video  */
#define VIDEO_TYPE_SGI          0x33    /* Various SGI graphics hardware */

#define VIDEO_TYPE_TGAC         0x40    /* DEC TGA */

#define VIDEO_TYPE_SUN          0x50    /* Sun frame buffer. */
#define VIDEO_TYPE_SUNPCI       0x51    /* Sun PCI based frame buffer. */

#define VIDEO_TYPE_PMAC         0x60    /* PowerMacintosh frame buffer. */

#define VIDEO_TYPE_EFI          0x70    /* EFI graphic mode             */

#ifdef __KERNEL__
extern struct screen_info screen_info;

#define ORIG_X                  (screen_info.orig_x)
#define ORIG_Y                  (screen_info.orig_y)
#define ORIG_VIDEO_MODE         (screen_info.orig_video_mode)
#define ORIG_VIDEO_COLS         (screen_info.orig_video_cols)
#define ORIG_VIDEO_EGA_BX       (screen_info.orig_video_ega_bx)
#define ORIG_VIDEO_LINES        (screen_info.orig_video_lines)
#define ORIG_VIDEO_ISVGA        (screen_info.orig_video_isVGA)
#define ORIG_VIDEO_POINTS       (screen_info.orig_video_points)
#endif /* __KERNEL__ */

#endif /* _SCREEN_INFO_H */