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PCI_PMCSR structure (wdm.h)

  • Article

The PCI_PMCSR structure is used to report the contents of the device's power management control status register.

Syntax

typedef struct _PCI_PMCSR {
  USHORT PowerState  :2;
  USHORT Rsvd1  :6;
  USHORT PMEEnable  :1;
  USHORT DataSelect  :4;
  USHORT DataScale  :2;
  USHORT PMEStatus  :1;
} PCI_PMCSR, *PPCI_PMCSR;

Members

PowerState

Indicates the power state of the device. This member can have the following values:

Value Meaning
0x00 Indicates that the device is in D0.
0x01 Indicates that the device is in D1.
0x02 Indicates that the device is in D2.
0x03 Indicates that the device is in D3.
 

For more information about the power state register, see the PCI Power Management Specification.

Rsvd1

Reserved.

NoSoftReset

Rsvd2

PMEEnable

Indicates, when 1, that the device is enabled to assert the PME signal. When 0, the device is not enabled to assert the PME signal. For more information about the meaning of the PME Enable bit, see the PCI Power Management Specification.

DataSelect

Indicates which data is to be reported through the data register. For more information about the values that this member can hold, see the PCI Power Management Specification.

DataScale

Indicates the scaling factor used to interpret the value of the data register. For more information about the values that this member can hold, see the PCI Power Management Specification.

PMEStatus

Contains a one-bit value (either 0 or 1) that reports the value of the PMEStatus bit in the power management register. For more information about the values that this member can hold, see the PCI Power Management Specification.

Requirements

Requirement Value
Header wdm.h (include Wdm.h, Miniport.h)

See also

PCI_PM_CAPABILITY