| UID | title | description | old-location | tech.root | ms.date | keywords | ms.keywords | req.header | req.include-header | req.target-type | req.target-min-winverclnt | req.target-min-winversvr | req.kmdf-ver | req.umdf-ver | req.ddi-compliance | req.unicode-ansi | req.idl | req.max-support | req.namespace | req.assembly | req.type-library | req.lib | req.dll | req.irql | targetos | req.typenames | f1_keywords | topic_type | api_type | api_location | api_name | ||||||||
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NF:wudfddi.IWDFDevice3.UnmapIoSpace |
IWDFDevice3::UnmapIoSpace (wudfddi.h) |
The UnmapIoSpace method unmaps a specified range of physical addresses previously mapped by MapIoSpace method. |
wdf\iwdfdevice3_unmapiospace.htm |
wdf |
02/26/2018 |
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IWDFDevice3 interface,UnmapIoSpace method, IWDFDevice3.UnmapIoSpace, IWDFDevice3::UnmapIoSpace, UnmapIoSpace, UnmapIoSpace method, UnmapIoSpace method,IWDFDevice3 interface, umdf.iwdfdevice3_unmapiospace, wdf.iwdfdevice3_unmapiospace, wudfddi/IWDFDevice3::UnmapIoSpace |
wudfddi.h |
Desktop |
1.11 |
Unavailable in UMDF 2.0 and later. |
WUDFx.dll |
Windows |
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[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]
The UnmapIoSpace method unmaps a specified range of physical addresses previously mapped by MapIoSpace method.
Pointer to the pseudo base address obtained from a previous call to MapIoSpace method to which the physical address range was mapped.
Specifies the number of bytes that were mapped.
If a driver calls MapIoSpace in OnPrepareHardware callback. It calls UnmapIoSpace in its OnReleaseHardware callback.
For an example, see Finding and Mapping Hardware Resources in a UMDF Driver.
See example code in IWDFDevice3::MapIoSpace.