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FCP_CMND
The FCP_CMND is sent from a host and is used for the task management instruction such
as SCSI command issue and target reset. The payload of FCP_CMND is shown in
Table D.1.12.
Table D.12 FCP_CMND Payload
Field Name
Definition
FCP_LUN
Logical Unit Number
FCP_CNTL
byte 0: Reserved
byte 1: Task Codes
bit 7 to 3: Reserved
bit 2 to 0: Task Attribute
000: SIMPLE_Q
001: HEAD_OF_Q
001: ORDERED_Q
100: ACA_Q (Not Supported)
101: UNTAGGED
byte 2: Task Management Flags
bit 7: TERMINATE TASK (Not Supported)
bit 6: CLEAR ACA
bit 5: TARGET RESET
bit 4 to 3: Reserved
bit 2: CLEAR TASK SET
bit 1: ABORT TASK SET
bit 0: Reserved
byte 3: Execution Management Codes
bit 7 to 2: Reserved
bit 1: READ DATA
bit 0: WRITE DATA
FCP_CDB
SCSI Command Descriptor Block
FCP_DL
Data Length
Size
8 bytes
4 bytes
16 bytes
4 bytes
Acer | HDS AMS200 User and Reference Guide
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