// irb.h

typedef enum {
  ChannelStateDisabled,
  ChannelStateEnabled,
  ChannelStateUnKnown
} ATA_CHANNEL_STATE;
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Windows Driver Kit DDI reference (ne-irb-ata_channel_state)

ATA_CHANNEL_STATE enumeration

Description

The ATA_CHANNEL_STATE enumeration type indicates the state of the channel.

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

`ChannelStateDisabled`

Indicates that the channel is disabled.

`ChannelStateEnabled`

Indicates that the channel is enabled.

`ChannelStateUnKnown`

Indicates that the state of the channel is unknown.

Remarks

The ATA_CHANNEL_STATE enumeration type is used in conjunction with the AtaControllerChannelEnabled routine to determine whether the channel is enabled.

ATA_CHANNEL_STATE - NtDoc