WD_DMATransactionInit

#define WD_DMATransactionInit	(		h,
			pDma
	)

Value:

    WD_FUNCTION(IOCTL_WD_DMA_TRANSACTION_INIT, h, pDma, SIZE_OF_WD_DMA(pDma), \
        FALSE)

Initializes the transaction, allocates a DMA buffer, locks it in physical memory, and returns mappings of the allocated buffer to physical address space and to user-mode and kernel virtual address spaces.

Parameters

[in]	h	Handle to WinDriver's kernel-mode driver as received from WD_Open().
[in,out]	pDma	Pointer to a DMA information structure

Returns

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

Definition at line 2060 of file windrvr.h.