Seagate Fibre Channel Interface User Manual
Page 125
Fibre Channel Interface Manual, Rev. D
111
Note: The Initiate Loop Initialization Action Code (03h) does not include a transfer of information to the enclo-
sure. The Action Specific bits in the Enclosure Request define the operation to be performed. See Table 62.
04h
Device Identification (see Section 10.5.3.4).
05h
Device Temperature (see Section 10.5.3.5).
06h
Port Parameters (see Section 10.5.3.6).
07h
Link Status (see Section 10.5.3.7).
08h
Spin-Down Control (see Section 10.5.3.8).
09h
ESI Data Validation (see Section 10.5.3.9).
0Ah-0Fh Reserved.
Action Specific
The Action Specific byte determines behavior unique to each action code. Refer to Table 63 for the Action Specific byte for
Action Code 3 and Table 71 for the Action Specific byte for Action Code 8. If an Action Specific field is not defined for a
given action code, its value shall be zero.
Initiate LIP Action Specific Bits
This table describes the Action Specific byte 3 of the Enclosure Request shown in Table 61.
Note.
The LIP Loop B and LIP Loop A bits are only defined as such if the Action Code field is set to 03 (Initiate Loop Ini-
tialization).
Field definitions (listed alphabetically)
LIP Loop A/B
1
The drive enters the Loop Initialization Process on either loop A, B, or both as indicated by these bits. The drive
originates a LIP(F7,AL_PS) if it has a valid AL_PA. The drive originates a LIP(F7,F7) if it does not have a valid
AL_PA.
Page Code
The Page Code identifies the page of enclosure data being transferred.
Note.
The Page Code is always 00h for Enclosure Initiated ESI.
Parameter Length
The parameter length in the enclosure request is set by the enclosure to the number of bytes it is requesting including the
four header bytes. The drive sends the actual length of the requested information or the length identified in the request
parameter length whichever is less. If the parameter length is equal to 0, The drive ends the ESI transfer by negating
Parallel_ESI.
Table 62:
Initiate LIP Action Specific Bits
Bit
Byte
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
LIP Loop B
LIP Loop A
Table
number