DXGKDDI_GETDEVICELOCATION callback function (dispmprt.h)

2024-02-22

Returns the location of a Virtual Function on the PCI bus relative to the root partition. If an IHV implementation does not support SR-IOV, the location of the physical function is returned.

Syntax

DXGKDDI_GETDEVICELOCATION DxgkddiGetdevicelocation;

void DxgkddiGetdevicelocation(
  HANDLE Context,
  DXGKARG_GETDEVICELOCATION *pArgs
)
{...}

Parameters

Context

The miniport context that is returned by the driver in the DXGKDDI_SRIOV_INTERFACE structure.

pArgs

Pointer to the DXGKARG_GETDEVICELOCATION structure.

Return value

None

Remarks

VF indices are incrementing, but the bus location is not directly tied to the index. This function retrieves the actual PCIe bus location of a virtual function.

Requirements

Requirement	Value
Minimum supported client	Windows 10
Header	dispmprt.h
IRQL	PASSIVE_LEVEL