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The value of the DEVPKEY_Device_DmaRemappingPolicy device property indicates the DMA remapping capability of the device.
Property key: DEVPKEY_Device_DmaRemappingPolicy
Property-data-type identifier: DEVPROP_TYPE_INT32
Property access: Read-only access by applications and services.
Localized?: No
Remarks
| Value | Meaning |
|---|---|
| 2 | Drivers on this device are capable of using DMA remapping. |
| 1 | At least one driver on this device opted out of DMA remapping. |
| 0 or the DMA Remapping Policy property is not visible | A DMA remapping INF directive is not specified in the INF file. DMA remapping is not enforced for this device. |
You can access the DEVPKEY_Device_DmaRemappingPolicy property by calling SetupDiGetDeviceProperty and SetupDiSetDeviceProperty.
Requirements
Version: Available in Windows 10, version 1803 (Redstone 4)
Header: Devpkey.h (include Devpkey.h)