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UFS_UNIT_CONFIG_DESCRIPTOR structure (ufs.h)

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The UFS_UNIT_CONFIG_DESCRIPTOR structure describes the user-configurable parameters within the UFS_CONFIG_DESCRIPTOR structure.

Syntax

typedef struct {
  UCHAR bLUEnable;
  UCHAR bBootLunID;
  UCHAR bLUWriteProtect;
  UCHAR bMemoryType;
  UCHAR dNumAllocUnits[4];
  UCHAR bDataReliability;
  UCHAR bLogicalBlockSize;
  UCHAR bProvisioningType;
  UCHAR wContextCapabilities[2];
  UCHAR Reserved[3];
} UFS_UNIT_CONFIG_DESCRIPTOR, *PUFS_UNIT_CONFIG_DESCRIPTOR;

Members

bLUEnable

Specifies whether the logical unit is enabled.

bBootLunID

Specifies whether the logical unit is a bootable logical unit.

bLUWriteProtect

Specifies whether the Logical Unit is write protected.

bMemoryType

Specifies the Memory type of the device. Can be one of the following values.

Value Description
0x00 Normal Memory type
0x01 System code memory type
0x02 Non-Persistent memory type
0x03 Enhanced memory type 1
0x04 Enhanced memory type 2
0x05 Enhanced memory type 3
0x06 Enhanced memory type 4
All other values Reserved for future use.

dNumAllocUnits[4]

Specifies the number of allocation units assigned to the logical unit.

bDataReliability

bDataReliability defines the device behavior when a power failure occurs during a write operation to the logical unit. Can be one of the following values.

Value Description
0x00 The logical unit is not protected; thus its entire data may be lost as a result of a power failure during a write operation.
0x01 The logical unit is protected; thus its data is protected against power failure.
All other values Reserved for future use.

bLogicalBlockSize

Specifies the logical block size.

bProvisioningType

Specifies the provisioning type. Can be one of the following values.

Value Description
0x00 Thin Provisioning is disabled (default)
0x02 Thin Provisioning is enabled and Thin Provisioning Read Zeros (TPRZ) = 0
0x03 Thin Provisioning is enabled and TPRZ = 1
All other values Reserved for future use.

wContextCapabilities[2]

Specifies the Context Capabilities.

Reserved[3]

Reserved for future use.

Requirements

Requirement Value
Minimum supported client Windows 10, version 1709
Minimum supported server Windows Server 2016
Header ufs.h

See also