Overview

This file contains all definitions for the data returned from the READ CAPACITY 10 (0x25) and READ CAPACITY 16 (0x9E) commands.

Typedefs

SCSI_Capacity_Data

SCSI_Capacity_Data_Long

typedef struct SCSI_Capacity_Data { 
    UInt32 RETURNED_LOGICAL_BLOCK_ADDRESS; 
    UInt32 BLOCK_LENGTH_IN_BYTES; 
} SCSI_Capacity_Data;  

Discussion

Capacity return structure for READ CAPACITY 10 command.

typedef struct SCSI_Capacity_Data_Long { 
    UInt64 RETURNED_LOGICAL_BLOCK_ADDRESS; 
    UInt32 BLOCK_LENGTH_IN_BYTES; 
    UInt8 RTO_EN_PROT_EN; 
    UInt8 Reserved[19]; 
} SCSI_Capacity_Data_Long;  

Discussion

Capacity return structure for READ CAPACITY 16 command.

Enumerated Types

PROTECTION INFORMATION definitions

READ CAPACITY Payload Sizes

RTO_EN definitions

enum { 
    kREAD_CAPACITY_PROT_Enabled = 0x01, 
    kREAD_CAPACITY_PROT_Disabled = 0x00, 
    kREAD_CAPACITY_PROT_Mask = 0x01 
};  

Constants

Discussion

Values for the PROTECTION INFORMATION (PROT_EN) bit in the READ CAPACITY Long Data structure.

enum { 
    kREPORT_CAPACITY_DataSize = 8, 
    kREPORT_CAPACITY_16_DataSize = 32 
};  

Constants

Discussion

Sizes of the payload for the READ CAPACITY 10 and READ CAPACITY 16 commands.

enum { 
    kREAD_CAPACITY_RTO_Enabled = 0x02, 
    kREAD_CAPACITY_RTO_Disabled = 0x00, 
    kREAD_CAPACITY_RTO_Mask = 0x02 
};  

Constants

Discussion

Values for the REFERENCE TAG OWN (RTO_EN) bit in the READ CAPACITY Long Data structure.

Macro Definitions

kREPORT_CAPACITY_16_MaximumLBA

kREPORT_CAPACITY_MaximumLBA

#define kREPORT_CAPACITY_16_MaximumLBA 0xFFFFFFFFFFFFFFFFULL 

Discussion

Maximum LBA supported via READ CAPACITY 16 command.

#define kREPORT_CAPACITY_MaximumLBA 0xFFFFFFFFUL 

Discussion

Maximum LBA supported via READ CAPACITY 10 command.

Last Updated: 2010-07-29