WDC_DMATransactionExecute()

DWORD DLLCALLCONV WDC_DMATransactionExecute	(	_Inout_ WD_DMA *	pDma,
		_In_ DMA_TRANSACTION_CALLBACK	funcDMATransactionCallback,
		_In_ PVOID	DMATransactionCallbackCtx
	)

Begins the execution of a specified DMA transaction.

Parameters

[in,out]	pDma	Pointer to a DMA information structure, received from a previous call to WDC_DMATransactionContigInit() (for a Contiguous DMA Buffer Transaction) or WDC_DMATransactionSGInit() (for a Scatter/Gather DMA buffer Transaction) *ppDma returned by these functions
[in]	funcDMATransactionCallback	If the execution is completed successfully, this callback function will be called directly with DMATransactionCallbackCtx as. context No action will be taken if this parameter is NULL.
[in]	DMATransactionCallbackCtx	Pointer to a DMA transaction callback context

Returns

Returns WD_STATUS_SUCCESS (0) on success, or an appropriate error code otherwise

For more detailed usage of the WDC_DMA Transactions functions, please refer to 11.3. Performing Direct Memory Access (DMA) transactions