AtaPortRequestPowerStateChange - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// irb.h
VOID AtaPortRequestPowerStateChange(
PVOID ChannelExtension,
UCHAR TargetId,
UCHAR Lun,
IDE_POWER_STATE DesiredPowerState
);
View the official Windows Driver Kit DDI referenceNo description available.
The AtaPortRequestPowerStateChange routine requests a power state transition for the indicated device.
Note The ATA port driver and ATA miniport driver models may be altered or unavailable in the future. Instead, we recommend using the Storport driver and Storport miniport driver models.
ChannelExtensionA pointer to the channel extension.
TargetIdSpecifies the target identifier of the device.
LunSpecifies the logical unit number (LUN).
DesiredPowerStateContains an enumerator value of type IDE_POWER_STATE that indicates the power state to which the indicated device should be changed.
The AtaPortRequestPowerStateChange routine is used when a miniport driver might have to initiate a power state change, such as when a hot-plug operation occurs.
Note The practice of doing idle detection from an ATA miniport driver is discouraged.