STOR_UNIT_ATTRIBUTES structure (storport.h)
The STOR_UNIT_ATTRIBUTES structure contains bit fields that indicate a storage device unit's support for various attributes.
Syntax
typedef struct _STOR_UNIT_ATTRIBUTES {
ULONG DeviceAttentionSupported : 1;
ULONG AsyncNotificationSupported : 1;
ULONG D3ColdNotSupported : 1;
ULONG BypassIOSupported : 1;
ULONG Reserved : 28;
} STOR_UNIT_ATTRIBUTES, *PSTOR_UNIT_ATTRIBUTES;
Members
DeviceAttentionSupported
Set to 1 if device attention is supported for the unit. Otherwise, set to 0.
AsyncNotificationSupported
Set to 1 if the device supports asynchronous notifications. Otherwise, set to 0.
D3ColdNotSupported
Set to 1 if the D3 Cold power state is not supported. Otherwise, set to 0.
BypassIOSupported
Set to 1 if BypassIO is supported for the unit. Otherwise, set to 0.
Reserved
Reserved bits. Must be set to 0.
Remarks
To register a unit's support for various attributes with Storport, a Storport miniport driver calls StorPortSetUnitAttributes with this structure as a parameter.
If the miniport driver supports asynchronous notifications, the AsyncNotificationSupported field set to 1, it will send notifications to the Storport driver using the StorPortAsyncNotificationDetected routine.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 8 |
| Header | storport.h (include Storport.h) |