Mode Sense (10)
138 SL150 Interface Reference Manual Julyl 2017
Mode Sense: Fibre Channel Disconnect/Reconnect Page Definitions
PS The parameters Saveable bit is set to 0.
SPF The library returns a value of
0 = the SubPage Format bit, indicating page_0 format is being used.
Page Code This field is set to:
02h = identifies the page as the Disconnect/Reconnect page.
Buffer Full Ratio This field indicates the device server, during read operations, how full the
buffer should be prior to requesting an interconnect tenancy.
Buffer Empty Ratio This field indicates the device server, during write operations, how empty the
buffer should be prior to transmitting an FCP_XFER_RDY IU that requests the
initiator to send data.
Bus Inactivity Limit This field indicates the maximum time that the target is permitted to maintain
an interconnect tenancy without data or information transfer, measured in
transmission word increments.
n 0000h indicates that there is no bus inactivity limit.
Disconnect Time Limit This field indicates the minimum delay between interconnect tenancies
measured in increments of 128 transmission words.
n 0000h indicates that the disconnect time limit does not apply.
Connect Time Limit The field indicates the maximum duration of a single interconnect tenancy,
measured in increments of 128 transmission words.
n 0000h indicates that there is no connect time limit.
Maximum Burst Size This field indicates the maximum size of FCP_DATA IU that the device server
shall transfer to the initiator or request from the initiator. This value is
expressed in increments of 512 bytes.
n 0000h indicates there is no limit on the amount of data transferred per data
transfer operation.
EMPD The Enable Modify Data Pointers bit indicates whether or not the target may
use the random buffer access capability to reorder FCP_DATA IUs for a single
SCSI command.
n 0 = The target shall generate continuously increasing relative offset values for
each FCP_DATA IU for a single SCSI command.
n 1 = The target may transfer the FCP_DATA IUs for a single SCSI command in
any order.
FAA, FAB, FAC The fairness access (FA) bits, FAA, FAB, and FAC, indicate whether a target in
a loop configuration shall use the access fairness algorithm. A value of 0
indicates that the target does not use fairness, while a value of 1 indicates that
the target does use a fairness algorithm.
n The FAA bit controls arbitration when the target wishes to send one or more
FCP_DATA IU frames to an initiator.
n The FAB bit controls arbitration when the initiator wishes to send one or more
FCP_XFER_RDY IU frames to a target.
n The FAC bit controls arbitration when the target wishes to send an FCP_RSP IU
frame to an initiator.
First Burst Size This field value is expressed in increments of 512.
n 0000h indicates that there is no first burst size limit.
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