C++ (Cpp) PciCf8Read32示例

示例#1

/**
  Reads a 32-bit PCI configuration register.

  Reads and returns the 32-bit PCI configuration register specified by Address.
  This function must guarantee that all PCI read and write operations are
  serialized.

  If Address > 0x0FFFFFFF, then ASSERT().

  @param  Address Address that encodes the PCI Bus, Device, Function and
                  Register.

  @return The read value from the PCI configuration register.

**/
UINT32
EFIAPI
PciRead32 (
  IN      UINTN                     Address
  )
{
  return PciCf8Read32 (Address);
}

示例#2

文件： PciLib.c 项目： EvanLloyd/tianocore

/**
  Reads a 32-bit PCI configuration register.

  Reads and returns the 32-bit PCI configuration register specified by Address.
  This function must guarantee that all PCI read and write operations are
  serialized.

  If Address > 0x0FFFFFFF, then ASSERT().
  If Address is not aligned on a 32-bit boundary, then ASSERT().

  @param  Address The address that encodes the PCI Bus, Device, Function and
                  Register.

  @return The read value from the PCI configuration register.

**/
UINT32
EFIAPI
PciRead32 (
  IN      UINTN                     Address
  )
{
  return mRunningOnQ35 ?
         PciExpressRead32 (Address) :
         PciCf8Read32 (Address);
}