MdePkg[all]  1.08
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Pages
gEfiDeviceIoProtocolGuid

Include/Protocol/DeviceIo.h

PROTOCOL Information

PROTOCOL's Guid NamePROTOCOL's Guid
gEfiDeviceIoProtocolGuid{ 0xAF6AC311, 0x84C3, 0x11D2, { 0x8E, 0x3C, 0x00, 0xA0, 0xC9, 0x69, 0x72, 0x3B }}

Refer to Header File

MdePkg/Include/Protocol/DeviceIo.h