kernel/include/kernel/x86/vbe.hpp

   1 /*
   2 lightOS kernel
   3 Copyright (C) 2006-2009 Jörg Pfähler
   4
   5 This program is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU General Public License
   7 as published by the Free Software Foundation; either version 2
   8 of the License, or (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  18 */
  19 #ifndef LIGHTOS_KERNEL_X86_VBE_HPP
  20 #define LIGHTOS_KERNEL_X86_VBE_HPP
  21
  22 /*! \addtogroup kernel kernel */
  23 /*@{*/
  24 /*! \addtogroup device device */
  25 /*@{*/
  26
  27 #include <string>
  28 #include <vector>
  29
  30 #ifdef _LIGHTOS_V86
  31
  32         namespace kernel
  33         {
  34                 /*! The VESA BIOS Extensions */
  35                 class vbe
  36                 {
  37                         public:
  38                                 /*! Information about a video mode */
  39                                 struct videoMode
  40                                 {
  41                                         /*! The width in pixel */
  42                                         unsigned int width;
  43                                         /*! The height in pixel */
  44                                         unsigned int height;
  45                                         /*! The bits per pixel */
  46                                         unsigned int bpp;
  47                                         /*! The address of the frame buffer */
  48                                         void *framebuffer;
  49                                 };
  50                                 /*! Get the vbe class instance */
  51                                 inline static vbe &instance(){if (inst == 0)inst = new vbe();return *inst;}
  52                                 /*! Get the major version */
  53                                 unsigned int majorVersion() const{return major;}
  54                                 /*! Get the minor version */
  55                                 unsigned int minorVersion() const{return minor;}
  56                                 /*! Get the OEM */
  57                                 const std::string &oem() const{return oemName;}
  58                                 /*! Get the vendor name */
  59                                 const std::string &vendor() const{return vendorName;}
  60                                 /*! Get the product name */
  61                                 const std::string &product() const{return productName;}
  62                                 /*! Get the product revision */
  63                                 const std::string &revision() const{return productRevision;}
  64                                 /*! Get the number of available modes */
  65                                 unsigned int modeCount() const{return modes.size();}
  66                                 /*! Get information about an mode */
  67                                 bool getModeInfo(unsigned int index, videoMode &mode) const;
  68                                 /*! Set the video mode */
  69                                 bool setMode(unsigned int index);
  70                         private:
  71                                 /*! The VBE info structure */
  72                                 struct infoBlock
  73                                 {
  74                                         char                            signature[4];
  75                                         unsigned short          version;
  76                                         unsigned int            oemName;
  77                                         unsigned int            caps;
  78                                         unsigned int            videoMode;
  79                                         unsigned short          totalMemory;
  80                                         unsigned short          oemSoftwareRevision;
  81                                         unsigned int            oemVendorName;
  82                                         unsigned int            oemProductName;
  83                                         unsigned int            oemProductRevision;
  84                                         unsigned char           res[222];
  85                                         unsigned char           oemData[256];
  86                                 }__attribute__((packed));
  87                                 /*! The VBE mode info structure */
  88                                 struct modeInfo
  89                                 {
  90                                         unsigned short          attributes;
  91                                         unsigned char           winAAttributes;
  92                                         unsigned char           winBAttributes;
  93                                         unsigned short          winGranularity;
  94                                         unsigned short          winSize;
  95                                         unsigned short          winASegment;
  96                                         unsigned short          winBSegment;
  97                                         unsigned int            winFunc;
  98                                         unsigned short          bytesPerScanline;
  99                                         unsigned short          xResolution;
 100                                         unsigned short          yResolution;
 101                                         unsigned char           xCharSize;
 102                                         unsigned char           yCharSize;
 103                                         unsigned char           numberOfPlanes;
 104                                         unsigned char           bitsPerPixel;
 105                                         unsigned char           numberOfBanks;
 106                                         unsigned char           memoryModel;
 107                                         unsigned char           BankSize;
 108                                         unsigned char           numberOfImagePages;
 109                                         unsigned char           res1;
 110                                         unsigned char           redMaskSize;
 111                                         unsigned char           refFieldPosition;
 112                                         unsigned char           greenMaskSize;
 113                                         unsigned char           greenFieldPosition;
 114                                         unsigned char           blueMaskSize;
 115                                         unsigned char           blueFieldPosition;
 116                                         unsigned char           rsvdMaskSize;
 117                                         unsigned char           rsvdFieldPosition;
 118                                         unsigned char           directColorModeInfo;
 119                                         unsigned int            physicalBase;
 120                                         unsigned int            offscreenMemOffset;
 121                                         unsigned short          offscreenMemSize;
 122                                         unsigned char           res2[206];
 123                                 }__attribute__((packed));
 124                                 /*! The constructor */
 125                                 vbe();
 126                                 /*! The destructor */
 127                                 ~vbe();
 128                                 /*! The vbe instance */
 129                                 static vbe *inst;
 130                                 /*! The VBE major version */
 131                                 unsigned int major;
 132                                 /*! The VBE minor version */
 133                                 unsigned int minor;
 134                                 /*! The video memory size */
 135                                 size_t videoMemory;
 136                                 /*! OEM */
 137                                 std::string oemName;
 138                                 /*! Vendor name */
 139                                 std::string vendorName;
 140                                 /*! Product name */
 141                                 std::string productName;
 142                                 /*! The product revision */
 143                                 std::string productRevision;
 144                                 /*! List of available modes */
 145                                 std::vector<unsigned short> modes;
 146                                 /*! Information on the available modes */
 147                                 std::vector<modeInfo*> modesInfo;
 148                 };
 149         }
 150
 151 #endif
 152
 153 /*@}*/
 154 /*@}*/
 155
 156 #endif