// dispmprt.h

DXGKDDI_GETDPADDRESS DxgkddiGetdpaddress;

NTSTATUS DxgkddiGetdpaddress(
  HANDLE Context,
  PDXGKARG_GETDPADDRESS pArgs
)
{...}
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Windows Driver Kit DDI reference (nc-dispmprt-dxgkddi_getdpaddress)

DXGKDDI_GETDPADDRESS callback function

Description

The DXGKDDI_GETDPADDRESS callback queries the DisplayPort (DP) address of a monitor connected through DP.

Parameters

`Context`

Context pointer provided when querying the interface.

`pArgs`

Pointer to a DXGKARG_GETDPADDRESS structure.

Return value

DXGKDDI_GETDPADDRESS returns STATUS_SUCCESS if it succeeds; otherwise it returns an error code.

Remarks

DXGKDDI_GETDPADDRESS is both for developmental and validation purposes.

For TargetId of a monitor connected through DP, the driver should return its DP address in the form of RootPortIndex, NumLinks, and DP Relative Address in RelAddress. NumLinks should be 0 if the DP monitor is directly connected to the GPU; otherwise, it should be the number of links between the root port and target device. The format of the Relative Address in RelAddress should follow the DP spec.

DXGKDDI_GETDPADDRESS - NtDoc