USB4 Systems PCIe Over USB4 Tunneled Protocol Mapping Support

  • Article

Verifies that systems with USB4 host routers specify (via _DSD) the mapping of tunneled native protocol ports to the correct USB4 host router.

Description

Systems with USB4 host routers must support _DSD on the USB4 host router device or the _DSD ACPI method, as defined in ACPI Interface: Device Specific Data (_DSD) for PCIe Root Ports,to map tunneled native protocol ports (PCIe) to the correct USB4 host router. This enables Windows to enumerate the correct dependencies between the tunneled protocols and the USB4 host routers on the system.

Note

In the first Windows release supporting the USB4 software configuration manager, USB4 capable systems must describe their tunneled protocol mappings using the _DSD method in ACPI. Support for PCIe add-in cards with DVSEC-described mapping are not supported.

Test details

   
Specifications
  • System.Fundamentals.SystemUSB.USB4.TunneledPCIePortMapping
Platforms
  • Windows 10, client editions (x86)
  • Windows 10, client editions (x64)
  • Windows 10, client editions (Arm)
  • Windows 10, client editions (Arm64)
Supported Releases
  • Windows 11
  • Next update to Windows 11
Expected run time (in minutes) 5
Category Development and Integration
Timeout (in minutes) 5
Requires reboot False
Requires special configuration False
Type development

Additional documentation

Tests in this feature area might have additional documentation, including prerequisites, setup, and troubleshooting information, that can be found in the following topic:

More information

Parameters

None

Enhancement scenarios

Establish power dependencies for PCIe devices tunneled over USB4.

Troubleshooting

For generic troubleshooting of HLK test failures, see Troubleshooting Windows HLK Test Failures.