// dispmprt.h

DXGKDDI_GETDEVICELOCATION DxgkddiGetdevicelocation;

VOID DxgkddiGetdevicelocation(
  HANDLE Context,
  DXGKARG_GETDEVICELOCATION *pArgs
)
{...}
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Windows Driver Kit DDI reference (nc-dispmprt-dxgkddi_getdevicelocation)

DXGKDDI_GETDEVICELOCATION callback function

Description

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.

Parameters

`Context`

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

`pArgs`

Pointer to the DXGKARG_GETDEVICELOCATION structure.

Prototype

//Declaration

DXGKDDI_GETDEVICELOCATION DxgkddiGetdevicelocation;

// Definition

VOID DxgkddiGetdevicelocation
(
    HANDLE Context
    DXGKARG_GETDEVICELOCATION * pArgs
)
{...}

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.

DXGKDDI_GETDEVICELOCATION - NtDoc