src/add-ons/accelerants/s3/register_io.h

   1 /*
   2         Copyright 2008 Haiku, Inc.  All rights reserved.
   3         Distributed under the terms of the MIT license.
   4
   5         Authors:
   6         Gerald Zajac 2008
   7 */
   8
   9 #ifndef __REGISTER_IO_H__
  10 #define __REGISTER_IO_H__
  11
  12
  13 // PIO address of various VGA registers.  If accessing these registers using
  14 // MMIO, add 0x8000 to thses addresses.
  15
  16 #define VGA_ENABLE              0x3c3
  17 #define MISC_OUT_R              0x3cc           // read
  18 #define MISC_OUT_W              0x3c2           // write
  19 #define CRTC_INDEX              0x3d4
  20 #define CRTC_DATA               0x3d5
  21 #define SEQ_INDEX               0x3c4
  22 #define SEQ_DATA                0x3c5
  23
  24
  25 // Prototypes of I/O functions for accessing registers using PIO.
  26
  27 uint32  ReadPIO(uint32 addr, uint8 numBytes);
  28 void    WritePIO(uint32 addr, uint8 numBytes, uint32 value);
  29
  30 inline uint8 ReadPIO_8(uint32 addr)     { return ReadPIO(addr, 1); }
  31 inline void WritePIO_8(uint32 addr, uint8 value) { WritePIO(addr, 1, value); }
  32
  33
  34 // Prototypes of I/O functions for accessing registers using PIO or MMIO
  35 // depending upon the type of S3 chip.
  36
  37 uint8  ReadReg8(uint32 addr);
  38 uint16 ReadReg16(uint32 addr);
  39 uint32 ReadReg32(uint32 addr);
  40
  41 void   WriteReg8(uint32 addr, uint8 value);
  42 void   WriteReg16(uint32 addr, uint16 value);
  43 void   WriteReg32(uint32 addr, uint32 value);
  44
  45 uint8  ReadCrtcReg(uint8 index);
  46 void   WriteCrtcReg(uint8 index, uint8 value);
  47 void   WriteCrtcReg(uint8 index, uint8 value, uint8 mask);
  48
  49 uint8  ReadSeqReg(uint8 index);
  50 void   WriteSeqReg(uint8 index, uint8 value);
  51 void   WriteSeqReg(uint8 index, uint8 value, uint8 mask);
  52
  53 uint8  ReadMiscOutReg();
  54 void   WriteMiscOutReg(uint8 value);
  55
  56 void   WriteIndexedColor(uint8 index, uint8 red, uint8 green, uint8 blue);
  57
  58
  59 #endif // __REGISTER_IO_H__