UEFI TIPS: PciLib

如果你在编写代码时有使用到类似 PciRead8() 这样的函数，那么可以通过在 INF 中加入 PciLib：

[LibraryClasses]
  UefiLib
  ShellCEntryLib
  IoLib
  PciLib

然后在代码中使用 include 调用头文件即可：

 #include <Library/PciLib.h>

具体的 PciLib.h 定义如下：


#define PCI_LIB_ADDRESS(Bus, Device, Function, Register)   \
  (((Register) & 0xfff) | (((Function) & 0x07) << 12) | (((Device) & 0x1f) << 15) | (((Bus) & 0xff) << 20))

RETURN_STATUS
EFIAPI
PciRegisterForRuntimeAccess (
  IN UINTN  Address
  );

UINT8
EFIAPI
PciRead8 (
  IN      UINTN  Address
  );

UINT8
EFIAPI
PciWrite8 (
  IN      UINTN  Address,
  IN      UINT8  Value
  );

UINT8
EFIAPI
PciOr8 (
  IN      UINTN  Address,
  IN      UINT8  OrData
  );

UINT8
EFIAPI
PciAnd8 (
  IN      UINTN  Address,
  IN      UINT8  AndData
  );

UINT8
EFIAPI
PciAndThenOr8 (
  IN      UINTN  Address,
  IN      UINT8  AndData,
  IN      UINT8  OrData
  );

UINT8
EFIAPI
PciBitFieldRead8 (
  IN      UINTN  Address,
  IN      UINTN  StartBit,
  IN      UINTN  EndBit
  );

UINT8
EFIAPI
PciBitFieldWrite8 (
  IN      UINTN  Address,
  IN      UINTN  StartBit,
  IN      UINTN  EndBit,
  IN      UINT8  Value
  );

UINT8
EFIAPI
PciBitFieldOr8 (
  IN      UINTN  Address,
  IN      UINTN  StartBit,
  IN      UINTN  EndBit,
  IN      UINT8  OrData
  );

UINT8
EFIAPI
PciBitFieldAnd8 (
  IN      UINTN  Address,
  IN      UINTN  StartBit,
  IN      UINTN  EndBit,
  IN      UINT8  AndData
  );

UINT8
EFIAPI
PciBitFieldAndThenOr8 (
  IN      UINTN  Address,
  IN      UINTN  StartBit,
  IN      UINTN  EndBit,
  IN      UINT8  AndData,
  IN      UINT8  OrData
  );

UINT16
EFIAPI
PciRead16 (
  IN      UINTN  Address
  );

UINT16
EFIAPI
PciWrite16 (
  IN      UINTN   Address,
  IN      UINT16  Value
  );

UINT16
EFIAPI
PciOr16 (
  IN      UINTN   Address,
  IN      UINT16  OrData
  );

UINT16
EFIAPI
PciAnd16 (
  IN      UINTN   Address,
  IN      UINT16  AndData
  );

UINT16
EFIAPI
PciAndThenOr16 (
  IN      UINTN   Address,
  IN      UINT16  AndData,
  IN      UINT16  OrData
  );

UINT16
EFIAPI
PciBitFieldRead16 (
  IN      UINTN  Address,
  IN      UINTN  StartBit,
  IN      UINTN  EndBit
  );

UINT16
EFIAPI
PciBitFieldWrite16 (
  IN      UINTN   Address,
  IN      UINTN   StartBit,
  IN      UINTN   EndBit,
  IN      UINT16  Value
  );

UINT16
EFIAPI
PciBitFieldOr16 (
  IN      UINTN   Address,
  IN      UINTN   StartBit,
  IN      UINTN   EndBit,
  IN      UINT16  OrData
  );

UINT16
EFIAPI
PciBitFieldAnd16 (
  IN      UINTN   Address,
  IN      UINTN   StartBit,
  IN      UINTN   EndBit,
  IN      UINT16  AndData
  );

UINT16
EFIAPI
PciBitFieldAndThenOr16 (
  IN      UINTN   Address,
  IN      UINTN   StartBit,
  IN      UINTN   EndBit,
  IN      UINT16  AndData,
  IN      UINT16  OrData
  );

UINT32
EFIAPI
PciRead32 (
  IN      UINTN  Address
  );

UINT32
EFIAPI
PciWrite32 (
  IN      UINTN   Address,
  IN      UINT32  Value
  );

UINT32
EFIAPI
PciOr32 (
  IN      UINTN   Address,
  IN      UINT32  OrData
  );

UINT32
EFIAPI
PciAnd32 (
  IN      UINTN   Address,
  IN      UINT32  AndData
  );

UINT32
EFIAPI
PciAndThenOr32 (
  IN      UINTN   Address,
  IN      UINT32  AndData,
  IN      UINT32  OrData
  );

UINT32
EFIAPI
PciBitFieldRead32 (
  IN      UINTN  Address,
  IN      UINTN  StartBit,
  IN      UINTN  EndBit
  );

UINT32
EFIAPI
PciBitFieldWrite32 (
  IN      UINTN   Address,
  IN      UINTN   StartBit,
  IN      UINTN   EndBit,
  IN      UINT32  Value
  );

UINT32
EFIAPI
PciBitFieldOr32 (
  IN      UINTN   Address,
  IN      UINTN   StartBit,
  IN      UINTN   EndBit,
  IN      UINT32  OrData
  );

UINT32
EFIAPI
PciBitFieldAnd32 (
  IN      UINTN   Address,
  IN      UINTN   StartBit,
  IN      UINTN   EndBit,
  IN      UINT32  AndData
  );

UINT32
EFIAPI
PciBitFieldAndThenOr32 (
  IN      UINTN   Address,
  IN      UINTN   StartBit,
  IN      UINTN   EndBit,
  IN      UINT32  AndData,
  IN      UINT32  OrData
  );

UINTN
EFIAPI
PciReadBuffer (
  IN      UINTN  StartAddress,
  IN      UINTN  Size,
  OUT     VOID   *Buffer
  );

UINTN
EFIAPI
PciWriteBuffer (
  IN      UINTN  StartAddress,
  IN      UINTN  Size,
  IN      VOID   *Buffer
  );