// d3dukmdt.h

typedef enum _D3DDDI_DOORBELLSTATUS {
  D3DDDI_DOORBELLSTATUS_CONNECTED,
  D3DDDI_DOORBELLSTATUS_CONNECTED_NOTIFY_KMD,
  D3DDDI_DOORBELLSTATUS_DISCONNECTED_RETRY,
  D3DDDI_DOORBELLSTATUS_DISCONNECTED_ABORT
} D3DDDI_DOORBELLSTATUS;
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Windows Driver Kit DDI reference (ne-d3dukmdt-d3dddi_doorbellstatus)

Description

The D3DDDI_DOORBELLSTATUS enumeration indicates the status of a doorbell object.

Constants

`D3DDDI_DOORBELLSTATUS_CONNECTED`

Indicates that the doorbell object is successfully connected to a hardware queue and ready for work submission.

`D3DDDI_DOORBELLSTATUS_CONNECTED_NOTIFY_KMD`

Indicates that the doorbell object is connected; however, after every new work submission and doorbell ring, UMD should notify KMD by calling D3DKMTNotifyWorkSubmission.

`D3DDDI_DOORBELLSTATUS_DISCONNECTED_RETRY`

Indicates that the doorbell can't be connected at this time, but UMD should retry to connect it.

`D3DDDI_DOORBELLSTATUS_DISCONNECTED_ABORT`

Indicates that the doorbell won't be connected and UMD can't use this hardware queue for work submission. This failure typically implies a nonrecoverable scenario such as a GPU reset or stopped adapter.

Remarks

For more information, see User-mode work submission.

D3DDDI_DOORBELLSTATUS - NtDoc