PVOID HwDmaStarted(HwDeviceExtension) IN PVOID HwDeviceExtension;
If the adapter uses slave DMA, the miniport driver's HwDmaStarted routine is called after the system DMA controller has been set up for a DMA transfer.
HwDeviceExtension
Points to the miniport driver's storage for per-adapter data.
Miniport drivers of host adapters that are busmasters or use programmed I/O need not supply this routine.
See also ScsiPortIoMapTransfer