WdfCommonBufferGetAlignedLogicalAddress function (wdfcommonbuffer.h)
[Applies to KMDF only]
The WdfCommonBufferGetAlignedLogicalAddress method returns the logical address that is associated with a specified common buffer.
Syntax
PHYSICAL_ADDRESS WdfCommonBufferGetAlignedLogicalAddress(
[in] WDFCOMMONBUFFER CommonBuffer
);
Parameters
[in] CommonBuffer
A handle to a common buffer object that the driver obtained by a previous call to WdfCommonBufferCreate.
Return value
WdfCommonBufferGetAlignedLogicalAddress returns the logical address of the buffer that is associated with the common buffer that the CommonBuffer parameter specifies.
A bug check occurs if the driver supplies an invalid object handle.
Remarks
Logical addresses are mapped addresses that devices use to access physical memory.
If the driver called WdfDeviceSetAlignmentRequirement to set a buffer alignment requirement, the framework aligns the common buffer according to that alignment requirement.
For more information about common buffers, see Using Common Buffers
Examples
For a code example that uses WdfCommonBufferGetAlignedLogicalAddress, see WdfCommonBufferCreate.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Universal |
| Minimum KMDF version | 1.0 |
| Header | wdfcommonbuffer.h (include WdfCommonBuffer.h) |
| Library | Wdf01000.sys (see Framework Library Versioning.) |
| IRQL | <= DISPATCH_LEVEL |
| DDI compliance rules | DriverCreate(kmdf), KmdfIrql(kmdf), KmdfIrql2(kmdf), KmdfIrqlExplicit(kmdf) |