OEM MANUAL:K6602924
5 COMMAND DESCRIPTIONS
Revision: 1 / Date: 2003.03.06
Page: 91 / 273
The parameter list length field designates the length in bytes of the log parameter
list (log pages) to be transferred from the initiator to the drive in the phase of DATA
OUT. A parameter list of zero indicates no log pages will be sent out from the
initiator. This condition will not be treated as an error.
If page codes or parameter codes within the parameter list sent out by the initiator
are reserved or not implemented by the drive, the drive will terminate the LOG
SELECT command with CHECK CONDITION status. The sense key will be set to
ILLEGAL REQUEST and the additional sense code will be INVALID FIELD IN
PARAMETER LIST.
If a parameter list length results in the truncation of any log parameter the drive will
terminate the command with CHECK CONDITION status. The sense key will be
ILLEGAL REQUEST and the sense code will be INVALID FIELD IN PARAMETER
LIST.
The log pages should be sent in ascending order by page code value if multiple pages
are sent by the initiator. The log parameters also have to be sent in ascending order
by parameter code value if multiple log parameters within a page are sent. The
drive will return CHECK CONDITION status if the initiator sends or parameters
out of order. In this case, the sense key will be ILLEGAL REQUEST and the sense
code will be INVALID FIELD IN PARAMETER LIST.
Initiators shall issue LOG SENSE commands to determine supported pages and page
lengths before issuing LOG SELECT commands.
The drive supports only one set of log parameters for all the initiators. Therefore, if
one initiator modifies a log parameter that will affect other initiators, the drive will
generate an UNIT ATTENTION condition for all initiators except the one that issues
the LOG SELECT command to change it. This UNIT ATTENTION condition is
returned with an additional sense code of LOG PARAMETERS CHANGED.
[ Log Pages ]
Following a LOG SELECT command, zero or more log pages can be sent out by the
initiator in a DATA OUT phase. Only one log page will be returned by the drive
in a DATA IN phase after received a LOG SENSE command. A log page starts
with four-byte page header followed by zero or more variable-length log
parameters for that page. The log page format is shown as Table 5.19.
LOG SELECT:(4Ch)