// d3dkmddi.h

typedef struct _DXGKARG_CONNECTDOORBELL_FLAGS {
  union {
    struct {
      UINT RequireSecondaryAddress : 1;
      UINT Reserved : 31;
    };
    UINT Value;
  };
} DXGKARG_CONNECTDOORBELL_FLAGS;
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Windows Driver Kit DDI reference (ns-d3dkmddi-dxgkarg_connectdoorbell_flags)

Description

The DXGKARG_CONNECTDOORBELL_FLAGS structure specifies doorbell connection flags for DxgkDdiConnectDoorbell.

Members

`RequireSecondaryAddress`

If UMD created this doorbell with the RequireSecondaryCpuVA flag, then Dxgkrnl sets this corresponding RequireSecondaryAddress flag to inform KMD that this doorbell requires two physical addresses.

`Reserved`

Reserved; set to zero.

`Value`

An alternative way to access the structure members.

Remarks

For more information, see User-mode work submission.

DXGKARG_CONNECTDOORBELL_FLAGS - NtDoc