// irb.h

typedef enum {
  IdePowerUnSpecified,
  IdePowerD0,
  IdePowerD3
} IDE_POWER_STATE;
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Windows Driver Kit DDI reference (ne-irb-ide_power_state)

IDE_POWER_STATE enumeration

Description

The IDE_POWER_STATE enumeration type indicates that power state of the 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.

Constants

`IdePowerUnSpecified`

Indicates that the power level is unspecified.

`IdePowerD0`

Indicates a device power level of 0.

`IdePowerD3`

Indicates a device power level of 3.

Remarks

The IDE_POWER_STATE enumeration type is used in conjunction with the AtaPortRequestPowerStateChange routine to request a power state transition for a device.

IDE_POWER_STATE - NtDoc