NdisMReadDmaCounter

ULONG
   NdisMReadDmaCounter(
       IN NDIS_HANDLE MiniportDmaHandle
       );

NdisMReadDmaCounter returns the current value of the system DMA controller’s counter.

Parameters

MiniportDmaHandle

Specifies the handle returned when the miniport called NdisMRegisterDmaChannel during initialization.

Return Value

NdisMReadDmaCounter returns the number of bytes remaining in the current DMA transfer on the channel used by the NIC.

Comments

NIC drivers of devices that use the system DMA controller’s autoinitialize mode can call NdisMReadDmaCounter.

Callers of NdisMReadDmaCounter run at IRQL <= DISPATCH_LEVEL.

See Also

MiniportInitialize, NdisMCompleteDmaTransfer, NdisMDeregisterDmaChannel, NdisMRegisterDmaChannel, NdisMSetAttributes, NdisMSetAttributesEx, NdisMSetupDmaTransfer