PHW_DMA_STARTED callback function (srb.h)
The PHW_DMA_STARTED routine prototype declares a SCSI miniport driver routine that starts DMA for subordinate DMA device.
Syntax
PHW_DMA_STARTED PhwDmaStarted;
void PhwDmaStarted(
[in] PVOID DeviceExtension
)
{...}
Parameters
[in] DeviceExtension
Pointer to the miniport driver's per-HBA storage area.
Return value
None
Remarks
If the HBA is a subordinate DMA device, the SCSI miniport driver's HwScsiDmaStarted routine is called after the OS-specific port driver has set up the system DMA controller for a DMA transfer.
Miniport drivers that work with the StorPort driver do not support adapters that require subordinate DMA.
Requirements
Requirement | Value |
---|---|
Target Platform | Desktop |
Header | srb.h (include Storport.h, Srb.h, Storport.h) |