Disk Info protocol is used to export Inquiry Data for a drive.
Include/Protocol/DiskInfo.h

PROTOCOL Information

PROTOCOL's Guid Name	PROTOCOL's Guid
gEfiDiskInfoProtocolGuid	{ 0xD432A67F, 0x14DC, 0x484B, { 0xB3, 0xBB, 0x3F, 0x02, 0x91, 0x84, 0x93, 0x27 }}

Refer to Header File