KernelLand/Modules/Display/VESA/common.h

   1 /**
   2  */
   3 #ifndef _COMMON_H_
   4 #define _COMMON_H_
   5
   6 // === TYPES ===
   7 typedef struct sFarPtr
   8 {
   9         Uint16  ofs;
  10         Uint16  seg;
  11 }       tFarPtr;
  12
  13 typedef struct sVesa_Mode
  14 {
  15         Uint16  code;
  16         Uint16  width, height;
  17         Uint16  pitch, bpp;
  18         Uint16  flags;
  19         Uint32  fbSize;
  20         Uint32  framebuffer;
  21 }       tVesa_Mode;
  22
  23 typedef struct sVesa_CallModeInfo
  24 {
  25         /**
  26          * 0 : Mode is supported
  27          * 1 : Optional information avaliable (Xres onwards)
  28          * 2 : BIOS Output Supported
  29          * 3 : Colour Mode?
  30          * 4 : Graphics mode?
  31          * -- VBE v2.0+
  32          * 5 : Mode is not VGA compatible
  33          * 6 : Bank switched mode supported
  34          * 7 : Linear framebuffer mode supported
  35          * 8 : Double-scan mode avaliable
  36          */
  37         Uint16  attributes;
  38         /**
  39          * 0 : Window exists
  40          * 1 : Window is readable
  41          * 2 : Window is writable
  42          */
  43         Uint8   winA,winB;
  44         Uint16  granularity;
  45         Uint16  winsize;
  46         Uint16  segmentA, segmentB;
  47         tFarPtr realFctPtr;
  48         Uint16  pitch;  // Bytes per scanline
  49
  50         Uint16  Xres, Yres;
  51         Uint8   Wchar, Ychar, planes, bpp, banks;
  52         Uint8   memory_model, bank_size, image_pages;
  53         Uint8   reserved0;
  54
  55         // -- VBE v1.2+
  56         Uint8   red_mask, red_position;
  57         Uint8   green_mask, green_position;
  58         Uint8   blue_mask, blue_position;
  59         Uint8   rsv_mask, rsv_position;
  60         Uint8   directcolor_attributes;
  61
  62         // -- VBE v2.0+
  63         Uint32  physbase;
  64         Uint32  offscreen_ptr;  // Start of offscreen memory
  65         Uint16  offscreen_size_kb;      // Size of offscreen memory
  66
  67         // -- VBE v3.0
  68         Uint16  lfb_pitch;
  69         Uint8   image_count_banked;
  70         Uint8   image_count_lfb;
  71 }       tVesa_CallModeInfo;
  72
  73 typedef struct sVesa_CallInfo
  74 {
  75         char            signature[4];           // == "VESA"
  76         Uint16  Version;        // == 0x0300 for Vesa 3.0
  77         tFarPtr OEMString;      // isa vbeFarPtr
  78         Uint8   Capabilities[4];
  79         tFarPtr VideoModes;     // isa vbeParPtr
  80         Uint16  TotalMemory;    // as # of 64KB blocks
  81 }       tVesa_CallInfo;
  82
  83 #endif