SCSI Commands: 39BREPORT SUPPORTED TASK MANAGEMENT FUNCTIONS
Page
166
3.27
REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS
The host uses this command to report information on the task management
functions that the drive supports.
3.27.1
REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS Command Descriptor
Block
The following table shows the layout of the CDB.
Byte
Bits
7 6 5 4 3 2 1 0
0
Operation Code (A3h)
1
Ignored LUN
Service Action (0Dh)
2
Reserved
3
Reserved
4
Reserved
5
Reserved
6
(MSB)
7
8
9
Allocation Length (4h or larger)
(LSB)
10
Reserved
11
Control
3.27.1.1
REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS
Command Field Descriptions
Field Bytes
Bits
Description
Operation
Code
0 The Operation code for REPORT SUPPORTED TASK
MANAGEMENT FUNCTIONS is A3h.
Ignored
Logical Unit
1 5-7
The LUN field is vestigial from the SCSI-1 standard and is
ignored.
Service
Action
1 0-4
The Service Action field is 0Dh and identifies the function to be
performed under the more general command function
specified in the operation code.
Allocation
Length
6-9 Specifies the amount of data to be returned, in bytes. The
allocation length should be at least 4.
Reserved
All reserved bits must be 0.
Control 11
See
SCSI Command Control Byte Format on page 25.
3.27.2
REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS Data
The following data is returned by the REPORT SUPPORTED TASK MANAGEMENT
FUNCTIONS command.
Byte
Bits
7 6 5 4 3 2 1 0
0
ATS ATSS
CACAS
CTSS LURS QTS TRS
WAKES
1
Reserved ITNRS
2
Reserved
3
Reserved
Summary of Contents for LTO 4
Page 1: ......