LPOALAllocateCommonBuffer (Windows Embedded CE 6.0)
1/6/2010
This function allocates memory for a DMA adapter specific driver. A similar function is HalAllocateCommonBuffer.
Syntax
typedef PVOID (* LPOALAllocateCommoneBuffer)(
PDMA_PDD_ADAPTER_CONTEXT lpPddAdapterContext,
PCE_DMA_ADAPTER DmaAdapter,
ULONG Length,
PPHYSICAL_ADDRESS LogicalAddress,
BOOLEAN CacheEnabled
);
Parameters
- lpPddAdapterContext
[in] Pointer to a DMA_PDD_ADAPTER_CONTEXT structure.
- DmaAdapter
[in] Pointer to a CE_DMA_ADAPTER structure.
- Length
[in] Size of buffer to allocate.
- LogicalAddress
[out] Pointer to the bus-relative, logical address buffer used by the DMA controller on the specified bus.
- CacheEnabled
[in] Ignored. The buffer returned is always at an uncached virtual address.
Return Value
Returns a pointer to an allocated buffer for the device driver to use. Returns NULL if the function fails.
Requirements
| Header | dmamif.h |
| Windows Embedded CE | Windows Embedded CE 6.0 and later |