Control Field (Fcp_Cntl) - Fujitsu MAA3182FC Series Manual

1.9.1.1 Control Field (FCP_CNTL)

bit 7 6 5 4
WD Byte
2 0 Reserved
= h '00'
1 Reserved
= b '00000'
2 Terminal Clear Target Reserved
Task ACA Reset
= b '0' = b '0' = b '00'
3 Reserved
= b '000000'
1 - 62
(1) Task Atrribute [PL:W02/B1/bit2-0]
3 2 1 0
Task Attribute
Clear Abort Reserved
Task Set Task Set
= b '0'
RD Data WT Data
(2) Task Management flag [PL:W02/B2]
C141-E054-02EN
The initiator specifies the Command Queue
type.
0h: Simple Queue
1h: Head of Queue
2h: Ordered Queue
4h: ACA Queue
The drive does not support.
5h: Untagged
•
The drive does not support the Untagged
command
The initiator uses to control the task.
a) Terminate TASK [B2/bit7]
0b: This drive does not support the bit,
works as 0.
b) Clear ACA [B2/bit6]
0b: This drive does not support the bit,
works as 0.
c) Target Reset [B2/bit5]
•
This drive clears all commands queued
when this drive receives the Target
Reset.
•
For next command that the initiator
issues the Target Reset except for
initiator in this drive, this drive
responds the UNIT ATTENTION status
in FCP_RSP frame.
d) Clear Task Set [B2/bit2]
•
This drive clears all commands queued
when this drive receives the Clear Task
Set.
•
For next command that the initiator
issues the Clear Task Set except for
initiator in this drive, this drive
responds the UNIT ATTENTION status
in FCP_RSP frame.