Seagate Fibre Channel Interface - Manual (Page 308)

294 Fibre Channel Interface Manual, Rev. D
12.36 Report Device Identifier command
The Report Device Identifier command (see Table 198) requests that the drive send device identification infor-
mation to the initiator.
Field definitions (listed alphabetically)
Allocation Length
This field indicates how much space has been reserved for the returned parameter data. If the length is not sufficient to
contain all the parameter data, the first portion of the data is returned. This is not considered an error. The actual length of
the parameter data is available in the Identifier Length field in the parameter data. If the remainder of the parameter data is
required, the initiator should send a new Report Device Identifier command with an Allocation Length field large enough to
contain all the data.
Control
See Section 11.2.1.6.
Operation Code
A3h
The operation code for the Report Device Identifier command.
Service Action
05h
As defined in the SCC-2 standard (SCSI Controller Command set T10/1225), the Report Device Identifier command
is the Report Peripheral Device/Component Device Identifier service action of the Maintenance In command (also
Op. code A3h, but for initiators). Additional Maintenance In service actions (that apply to SCC-2 devices and
devices that set the SCCS bit in their Standard Inquiry data) are defined in SCC-2, Section 6.3.
The data returned from this command is formatted as described in the Report Device Identifier parameter list
(see Table 199).
Table 198: Report Device Identifier command (A4h)
Bit
Byte
7 6 5 4 3 2 1 0
0
Operation Code (A3h)
1 Reserved Service Action (05h)
2
Reserved
3
Reserved
4
Reserved
5
Reserved
6
(MSB)
Allocation Length
7
8
9 (LSB)
10
Reserved
11
Control
A3h
Table
number
198
198
198
198