SmbusLib.c

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#include "InternalSmbusLib.h"
 
VOID
EFIAPI
SmBusQuickRead (
  IN  UINTN          SmBusAddress,
  OUT RETURN_STATUS  *Status       OPTIONAL
  )
{
  ASSERT (!SMBUS_LIB_PEC (SmBusAddress));
  ASSERT (SMBUS_LIB_COMMAND (SmBusAddress)   == 0);
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)    == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  InternalSmBusExec (EfiSmbusQuickRead, SmBusAddress, 0, NULL, Status);
}
 
VOID
EFIAPI
SmBusQuickWrite (
  IN  UINTN          SmBusAddress,
  OUT RETURN_STATUS  *Status       OPTIONAL
  )
{
  ASSERT (!SMBUS_LIB_PEC (SmBusAddress));
  ASSERT (SMBUS_LIB_COMMAND (SmBusAddress)   == 0);
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)    == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  InternalSmBusExec (EfiSmbusQuickWrite, SmBusAddress, 0, NULL, Status);
}
 
UINT8
EFIAPI
SmBusReceiveByte (
  IN  UINTN          SmBusAddress,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  UINT8  Byte;
 
  ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)  == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  InternalSmBusExec (EfiSmbusReceiveByte, SmBusAddress, 1, &Byte, Status);
 
  return Byte;
}
 
UINT8
EFIAPI
SmBusSendByte (
  IN  UINTN          SmBusAddress,
  IN  UINT8          Value,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  UINT8  Byte;
 
  ASSERT (SMBUS_LIB_COMMAND (SmBusAddress)   == 0);
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)    == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  Byte = Value;
  InternalSmBusExec (EfiSmbusSendByte, SmBusAddress, 1, &Byte, Status);
 
  return Value;
}
 
UINT8
EFIAPI
SmBusReadDataByte (
  IN  UINTN          SmBusAddress,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  UINT8  Byte;
 
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)    == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  InternalSmBusExec (EfiSmbusReadByte, SmBusAddress, 1, &Byte, Status);
 
  return Byte;
}
 
UINT8
EFIAPI
SmBusWriteDataByte (
  IN  UINTN          SmBusAddress,
  IN  UINT8          Value,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  UINT8  Byte;
 
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)    == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  Byte = Value;
  InternalSmBusExec (EfiSmbusWriteByte, SmBusAddress, 1, &Byte, Status);
 
  return Value;
}
 
UINT16
EFIAPI
SmBusReadDataWord (
  IN  UINTN          SmBusAddress,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  UINT16  Word;
 
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)    == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  InternalSmBusExec (EfiSmbusReadWord, SmBusAddress, 2, &Word, Status);
 
  return Word;
}
 
UINT16
EFIAPI
SmBusWriteDataWord (
  IN  UINTN          SmBusAddress,
  IN  UINT16         Value,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  UINT16  Word;
 
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)    == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  Word = Value;
  InternalSmBusExec (EfiSmbusWriteWord, SmBusAddress, 2, &Word, Status);
 
  return Value;
}
 
UINT16
EFIAPI
SmBusProcessCall (
  IN  UINTN          SmBusAddress,
  IN  UINT16         Value,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)    == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  InternalSmBusExec (EfiSmbusProcessCall, SmBusAddress, 2, &Value, Status);
 
  return Value;
}
 
UINTN
EFIAPI
SmBusReadBlock (
  IN  UINTN          SmBusAddress,
  OUT VOID           *Buffer,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  ASSERT (Buffer != NULL);
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress)    == 0);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  return InternalSmBusExec (EfiSmbusReadBlock, SmBusAddress, 0x20, Buffer, Status);
}
 
UINTN
EFIAPI
SmBusWriteBlock (
  IN  UINTN          SmBusAddress,
  OUT VOID           *Buffer,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  UINTN  Length;
 
  ASSERT (Buffer != NULL);
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  Length = SMBUS_LIB_LENGTH (SmBusAddress);
  return InternalSmBusExec (EfiSmbusWriteBlock, SmBusAddress, Length, Buffer, Status);
}
 
UINTN
EFIAPI
SmBusBlockProcessCall (
  IN  UINTN          SmBusAddress,
  IN  VOID           *WriteBuffer,
  OUT VOID           *ReadBuffer,
  OUT RETURN_STATUS  *Status        OPTIONAL
  )
{
  UINTN  Length;
 
  ASSERT (WriteBuffer != NULL);
  ASSERT (ReadBuffer  != NULL);
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);
  ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);
  ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);
 
  Length = SMBUS_LIB_LENGTH (SmBusAddress);
  //
  // Assuming that ReadBuffer is large enough to save another memory copy.
  //
  ReadBuffer = CopyMem (ReadBuffer, WriteBuffer, Length);
  return InternalSmBusExec (EfiSmbusBWBRProcessCall, SmBusAddress, Length, ReadBuffer, Status);
}