WDF_DMA_SYSTEM_PROFILE_CONFIG_INIT - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// wdfdmaenabler.h
VOID WDF_DMA_SYSTEM_PROFILE_CONFIG_INIT(
PWDF_DMA_SYSTEM_PROFILE_CONFIG DmaConfig,
[in] PHYSICAL_ADDRESS Address,
[in] DMA_WIDTH DmaWidth,
[in] PCM_PARTIAL_RESOURCE_DESCRIPTOR DmaDescriptor
);
View the official Windows Driver Kit DDI referenceNo description available.
[Applies to KMDF only]
The WDF_DMA_SYSTEM_PROFILE_CONFIG_INIT function initializes a driver's WDF_DMA_SYSTEM_PROFILE_CONFIG structure.
DmaConfigA pointer to a driver-allocated WDF_DMA_SYSTEM_PROFILE_CONFIG structure.
Address [in]The translated address of the register to target for DMA. For more information, see Remarks.
DmaWidth [in]The width of the register specified by Address.
DmaDescriptor [in]The translated resource descriptor for the DMA channel assigned the device during EvtDevicePrepareHardware.
Typically, a driver calls WDF_DMA_SYSTEM_PROFILE_CONFIG_INIT from within its EvtDevicePrepareHardware callback function. A driver must call the WDF_DMA_SYSTEM_PROFILE_CONFIG_INIT function before calling WdfDmaEnablerConfigureSystemProfile.
Depending on the System on a Chip (SoC) design, the Address parameter might have a different meaning. For example if DMA uses dedicated transfer ports on the device, Address might indicate the port to which DMA writes occur.
For more information about creating a system-mode DMA enabler, see Supporting System-Mode DMA.
For a code example that uses WDF_DMA_SYSTEM_PROFILE_CONFIG_INIT, see WdfDmaEnablerConfigureSystemProfile.
WdfDmaEnablerConfigureSystemProfile