STORAGE_PROTOCOL_SPECIFIC_DATA structure

Description

Describes protocol-specific device data, provided in the input and output buffer of an IOCTL_STORAGE_QUERY_PROPERTY request.

Members

ProtocolType

The protocol type. Values for this member are defined in the STORAGE_PROTOCOL_TYPE enumeration.

DataType

The protocol data type. Data types are defined in the STORAGE_PROTOCOL_NVME_DATA_TYPE and STORAGE_PROTOCOL_ATA_DATA_TYPE enumerations.

ProtocolDataRequestValue

The protocol data request value.

ProtocolDataRequestSubValue

The sub value of the protocol data request.

ProtocolDataOffset

The offset of the data buffer that is from the beginning of this structure. The typical value can be sizeof(STORAGE_PROTOCOL_SPECIFIC_DATA).

ProtocolDataLength

The length of the protocol data. ProtocolDataLength must be >= 512 bytes.

FixedProtocolReturnData

The returned data.

ProtocolDataRequestSubValue2

First additional data sub request value.

ProtocolDataRequestSubValue3

Second additional data sub request value.

ProtocolDataRequestSubValue4

Third additional data sub request value.

Remarks

When using IOCTL_STORAGE_QUERY_PROPERTY to retrieve protocol-specific information in the STORAGE_PROTOCOL_DATA_DESCRIPTOR, configure the STORAGE_PROPERTY_QUERY structure as follows:

• Allocate a buffer that can contains both a STORAGE_PROPERTY_QUERY and a STORAGE_PROTOCOL_SPECIFIC_DATA structure.
• Set the PropertyID field to StorageAdapterProtocolSpecificProperty or StorageDeviceProtocolSpecificProperty for a controller or device/namespace request, respectively.
• Set the QueryType field to PropertyStandardQuery.
• Fill the STORAGE_PROTOCOL_SPECIFIC_DATA structure with the desired values. The start of STORAGE_PROTOCOL_SPECIFIC_DATA is the AdditionalParameters field of STORAGE_PROPERTY_QUERY.

To specify a type of NVMe protocol-specific information, configure the STORAGE_PROTOCOL_SPECIFIC_DATA structure as follows:

• Set the ProtocolType field to ProtocolTypeNVMe.
• Set the DataType field to an enumeration value defined by STORAGE_PROTOCOL_NVME_DATA_TYPE:
  • NVMeDataTypeIdentify to get Identify Controller data or Identify Namespace data.
  • NVMeDataTypeLogPage to get log pages (including SMART/health data).
  • NVMeDataTypeFeature to get features of the NVMe drive.

To specify a type of ATA protocol-specific information, configure the STORAGE_PROTOCOL_SPECIFIC_DATA structure as follows:

• Set the ProtocolType field to ProtocolTypeAta.
• Set the DataType field to an enumeration value defined by STORAGE_PROTOCOL_ATA_DATA_TYPE:
  • Use AtaDataTypeIdentify to identify the ATA drive.
  • Use AtaDataTypeLogPage to get log pages from the ATA drive.

See also

IOCTL_STORAGE_QUERY_PROPERTY

STORAGE_PROPERTY_ID

STORAGE_PROPERTY_QUERY

STORAGE_PROTOCOL_SPECIFIC_DATA_EXT