217828C1-DA75-5BC1-7B58-91954FED0101

Overview

This GUID-named DXE driver implements the VMD (Volume Management Device) controller driver for NVMe SSDs on the Lenovo HR650X platform. It provides UEFI driver binding for Intel VMD-capable PCIe root ports and manages NVMe subsystem initialization through the NvmExpress protocol stack.

The module (246 functions) bridges VMD hardware with the NVM Express driver model, handling PCI I/O configuration, HII form display for VMD device management, driver binding (Supported/Start/Stop), and NVMe controller initialization and passthrough commands.

Key Functions

• VmdDriverSupported / VmdDriverStart / VmdDriverStop -- UEFI driver binding protocol
• VmdHiiExtractHii / VmdHiiRouteHii -- HII configuration routing
• VmdDevicePathExtract / VmdDevicePathConfig -- Device path management
• NvmExpressControllerInit -- NVMe controller initialization
• NvmExpressPassthru -- NVMe admin/NVM command passthrough
• NvmExpressBlockIo -- NVMe block I/O protocol

Dependencies

• UEFI Driver Binding Protocol
• UEFI HII Protocol (Database, String, Config Routing, Form Browser 2)
• PCI I/O Protocol
• Block I/O Protocol
• Intel VMD hardware specification
• NVM Express specification

Platform

Lenovo HR650X (x86_64, PE32+)