Teledyne LeCroy SAS Verification Test Descriptions - Manual (Page 39)

The University of New Hampshire
InterOperability Laboratory
Serial Attached SCSI Consortium
38 SAS Link and Transport Layer Test Suite v0.13
Test 9.2.2 - SSP Command IU – TARGET PORT TRANSFER TAG
Purpose: To determine that the DUT properly sets the TARGET PORT TRANSFER TAG field.
References:
9.2.1 SAS Standard
Resource Requirements: SAS Protocol Analyzer and Generator. SAS Target with 2 LUNs within the same SSP
Target Port. If the DUT is an initiator, it will need to have software capable of generating SCSI traffic.
Revision History: February 8, 2005
Test Setup: The DUT and the Testing Station are physically connected. The DUT is not powered on.
Test Procedure (SSP Targets):
• Power on the DUT.
• The Testing Station should start and complete a Phy Reset sequence followed by an Identify sequence
with the DUT. Since the DUT is a target the Testing Station should transmit an Identify Address frame
indicating that it is an initiator.
• The Testing Station should open an SSP connection to the DUT. The Testing Station should transmit a
WRITE BUFFER command to the DUT.
• Wait for the DUT to open an SSP connection to the Testing Station. Allow the DUT to transmit
XFER_RDY, then the Testing Station should transmit a SSP DATA frame. Allow the DUT to transmit
a SCSI Response to the Testing Station.
• The Testing Station should open a second SSP connection to the DUT. The Testing Station should
transmit a WRITE BUFFER command to the DUT do a different LUN than the first WRITE_BUFFER
command .
• Wait for the DUT to open an SSP connection to the Testing Station. Allow the DUT to transmit
XFER_RDY, then the Testing Station should transmit a SSP DATA frame. Allow the DUT to transmit
a SCSI Response to the Testing Station.
Observable Results: SSP Targets have the option of setting the TARGET PORT TRANSFER TAG field to any
value when transmitting a frame. In an XFER_RDY frame the Target Port Transfer Tag should be unique for the
L_Q portion of the I_T_L_Q nexus.