Min version	XP	2003/XP64 SP1
Max version	2003/XP64 SP2	10 TH2
x86 offset offset:bitpos	Field Name
0x0000	uint8_t MajorFunction
0x0001	uint8_t MinorFunction
0x0002	uint8_t Flags
0x0003	uint8_t Control
0x0004	union __unnamed Parameters	union <unnamed-tag> Parameters
0x0014	struct _DEVICE_OBJECT * DeviceObject
0x0018	struct _FILE_OBJECT * FileObject
0x001C	function * CompletionRoutine
0x0020	void * Context