SCSI Commands: 22BMODE SELECT
Page
95
3.10.11Protocol-Specific Port Mode Page (19h)
3.10.11.1
Protocol-Specific Port Mode Page (19h) for FCP
The Fibre Channel Port Control mode page contains those parameters that select
FCP_Port operation options. The page is implemented by LUN 0 of the drive. Some
of the bits defined by the Fibre Channel Port Control page require the FCP_Port to
violate one or more of the Fibre Channel standards. The non-standard behaviors have
been identified as useful for certain specialized operating environments. For this reason,
all of the fields in bytes 3 – 7 are zero and cannot be changed.
Byte
Bits
7 6 5 4 3 2 1 0
0
PS
SPF (0)
PAGE CODE (19h)
1
PAGE LENGTH 06h)
2
Reserved
PROTOCOL IDENTIFIER (FCP = 0h)
3
DTFD PLPB DDIS DLM RHA ALWI
DTIPE DTOLI
4
Reserved
5
Reserved
6
Reserved RR_TOV
UNITS
7
SEQUENCE INITIATIVE RESOURCE RECOVERY TIME-OUT VALUE (RR_TOV
SEQ_INT
)
3.10.11.1.1
Fibre Channel Port Page Field Descriptions
Field
Bytes
Bits
Description
PAGE CODE
0
0-5
19h, indicating a Port Control Mode Page.
SPF
0
6
Sub Page Format.
0 = page_0 Mode Page format
1 = Sub_page format
PAGE LENGTH
1
06h, indicating that six parameter bytes follow the Page Length
byte.
PROTOCOL
IDENTIFIER
2
0-3
0 = Fibre Channel Protocol for SCSI (FCP)
DTOLI
3
0
Always 0, indicating that the drive can initiate LIP.
DTIPE 3
1
Always 0, indicating that the drive will insert itself in the loop
waiting for LPE.
ALWI
3
2
Always 0, indicating that the drive will accept login without LIP.
RHA 3
3
Always 0, indicating that the drive will attempt to obtain an
address during the LISA phase of LIP.
DLM 3
4
Always 0, indicating that the drive will not attempt to become
loop master
DDIS 3
5
Always 0, indicating that address discovery is required following
LIP
PLPB 3
6
Always 0, indicating that the drive will response to Loop Port
Bypass (LPB) and Loop Port Enable (LPE) primitive sequences
DTFD 3
7
Always 0, indicating that the drive will always recognize a fabric
loop port and will perform the public loop functions required by
FC-FLA.
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