Accredited Standards Committee*
InterNational Committee for Information Technology Standards (INCITS)
Doc. No.: T10/04-214r0
Date: July 13, 2004
Reply to: John Lohmeyer
To: T10 Membership
From: Ralph Weber and John Lohmeyer
Subject: SAS Protocol WG -- July 12, 2004
Colorado Springs, CO
Agenda
1. Opening Remarks
2. Approval of Agenda
3. Attendance and Membership
4. Old Business
4.1 SAS 1.1, adding the Terminate Data Transfer protocol service (03-245r4)
[Evans]
4.2 SAS-1.1, protocol for changing driver amplitude (03-285r2) [Evans]
4.3 SAS-1.1: Close Port Selector Detection Gap (04-029r4) [Sheffield]
4.4 SAS 1.1 UML Corrections (04-042r2) [Penokie]
4.5 SAS-1.1: Fix SP Hang States (04-030r4) [Sheffield]
4.6 SAS-1.1 Miscellaneous changes (04-115r2) [Elliott]
4.7 SAS-1.1, ST_T (transport layer for SSP target ports) state machines
(04-137r1) [Evans]
5. New Business
5.1 SAS 1.1: Number of Pad Bytes Fix (04-170r1) [Penokie]
5.2 SAS-1.1 SMP functions for SGPIO (04-165r0) [Elliott]
5.3 SAS-1.1 Invalid dword handling (04-167r0) [Elliott]
5.4 SAS-1.1 RRDY and CREDIT_BLOCKED clarifications (04-168r0) [Elliott]
5.5 SAS-1.1 REPORT MANUFACTURER INFORMATION changes (04-175r1) [Elliott]
5.6 SAS-1.1, SAS phy test functions diagnostic page (04-181r0) [Evans]
5.7 SAS-1.1 BROADCAST (CHANGE) on virtual phy resets (04-183r0) [Elliott]
5.8 SAS-1.1 More counters (04-172r0) [Elliott]
5.9 SAS: SM-HBA Overview (04-217r0) [Sheffield]
5.10 SAS Signal Class Proposal (04-220r0) [Fairchild]
5.11 SAS Transceiver Control Mode Page Proposal (04-221r0) [Fairchild]
5.12 SAS Pattern Generation Mode Page Proposal (04-222r0) [Fairchild]
5.13 SAS - SATA Enhanced Signal Proposal (04-224r0) [Johnson]
6. Review of Recommendations
7. Meeting Schedule
8. Adjournment
Results of Meeting
1. Opening Remarks
John Lohmeyer called the meeting to order at 9:00 a.m. Monday, July 12, 2004.
He thanked LSI Logic for hosting the meeting. As usual, the people present
introduced themselves.
2. Approval of Agenda
The draft agenda was approved with no changes.
The following item was added or revised during the course of the meeting:
5.13 SAS - SATA Enhanced Signal Proposal (04-224r0) [Johnson]
3. Attendance and Membership
Attendance at working group meetings does not count toward minimum attendance
requirements for T10 membership. Working group meetings are open to any person
or organization directly and materially affected by T10's scope of work. The
following people attended the meeting:
Name S Organization Electronic Mail Address
---------------------- -- ------------------------- -------------------------
Mr. Tim Symons P Adaptec, Inc. Timothy_Symons at
adaptec dot com
Mr. Doug Cole A Dallas Semiconductor doug dot cole at dalsemi
dot com
Mr. Kevin Marks P Dell, Inc. kevin_marks at dell dot
com
Mr. Robert H. Nixon P Emulex bob dot nixon at emulex
dot com
Mr. Ralph O. Weber P ENDL Texas roweber at ieee dot org
Mr. Gary Stephens V FSI Consulting Services grsfsi at aol dot com
Mr. Mike Fitzpatrick P Fujitsu mfitzpatrick at fcpa dot
fujitsu dot com
Mr. Rob Elliott P Hewlett Packard Co. Elliott at hp dot com
Mr. Steven Fairchild V Hewlett Packard Co. Steve dot Fairchild at
hp dot com
Mr. Dan Colegrove P Hitachi Global Storage daniel dot colegrove at
Tech. hgst dot com
Mr. George O. Penokie P IBM / Tivoli Systems gop at us dot ibm dot com
Mr. Robert Sheffield P Intel Corp. robert dot l dot
sheffield at intel dot
com
Mr. Brian Day V LSI Logic Corp. brian dot day at lsil
dot com
Mr. Tim Hoglund V LSI Logic Corp. tim dot hoglund at lsil
dot com
Mr. Steve Johnson V LSI Logic Corp. sjohnson at lsil dot com
Mr. John Lohmeyer P LSI Logic Corp. lohmeyer at t10 dot org
Mr. Steven Schauer V LSI Logic Corp. steve dot schauer at
lsil dot com
Mr. David Steele V LSI Logic Corp. david dot steele at lsil
dot com
Mr. Martin Czekalski A Maxtor Corp. marty_czekalski at
maxtor dot com
Mr. Mark Evans P Maxtor Corp. mark_evans at maxtor dot
com
Mr. Jeff Mastro A Microsoft Corp. jmastro at microsoft dot
com
Mr. Edward A. Gardner V Ophidian Designs eag at ophidian dot com
Mr. Craig W. Carlson A# QLogic Corp. craig dot carlson at
qlogic dot com
Mr. Don Carothers V QLogic Corp. don dot carothers at
qlogic dot com
Mr. Greg Elkins V QLogic Corp. greg dot elkins at
qlogic dot com
Mr. Jim Jones A Quantum Corp. jim dot jones at quantum
dot com
Mr. Gerald Houlder P Seagate Technology gerry dot houlder at
seagate dot com
Mr. Vit Novak P Sun Microsystems, Inc. vit dot novak at sun dot
com
Mr. Yutaka Arakawa P Toshiba yutaka dot arakawa at
tais dot toshiba dot com
Mr. Gregory Tabor AV Vitesse Semiconductor greg at vitesse dot com
30 People Present
Status Key: P - Principal
A,A# - Alternate
AV - Advisory Member
L - Liaison
V - Visitor
4. Old Business
4.1 SAS 1.1, adding the Terminate Data Transfer protocol service (03-245r4)
[Evans]
Mark Evans requested that discussion of this topic be deferred to the next
meeting.
4.2 SAS-1.1, protocol for changing driver amplitude (03-285r2) [Evans]
Mark Evans requested that discussion of this topic be deferred to the next
meeting.
4.3 SAS-1.1: Close Port Selector Detection Gap (04-029r4) [Sheffield]
Bob Sheffield presented a proposal to use a new BROADCAST(CHANGE) primitive to
interlock handling of port selectors and a new LINK RATE NOT NEGOTIATED value
for the NEGOTIATED PHYSICAL LINK RATE field in the DISCOVER Response to
establish positive reporting of port selector presence (04-029r3).
Concerns were raised about clearing the attached port selector bit when a SATA
drive is replaced by a SAS drive and Bob agreed to prepare a new revision of
the proposal.
Bob Sheffield moved that 04-029r4 (r3 as revised) be recommended for inclusion
in SAS-1.1. Tim Hoglund seconded the motion. In the absence of any objections,
the motion passed unanimously.
4.4 SAS 1.1 UML Corrections (04-042r2) [Penokie]
George Penokie led the group in a discussion of corrections needed in the
SAS-1.1 UML (04-042r2).
The group requested several changes and George agreed to prepare a new
revision for consideration at the next meeting.
4.5 SAS-1.1: Fix SP Hang States (04-030r4) [Sheffield]
Bob Sheffield presented a proposal to clearly identify SP state diagram
transitions to COMINIT (04-030r4).
Bob Sheffield moved that 04-030r4 be recommended for inclusion in SAS-1.1. Rob
Elliott seconded the motion. In the absence of any objections, the motion
passed unanimously.
4.6 SAS-1.1 Miscellaneous changes (04-115r2) [Elliott]
Rob Elliott led the group in a review of several unrelated SAS-1.1 changes
(04-115r2). He noted that the contentious topics had been moved to separate
proposals.
Rob Elliott moved that 04-115r2 be recommended for inclusion in SAS-1.1. Bob
Sheffield seconded the motion. In the absence of any objections, the motion
passed unanimously.
4.7 SAS-1.1, ST_T (transport layer for SSP target ports) state machines
(04-137r1) [Evans]
Mark Evans presented a proposal to clarify and reorganize the SSP target port
state machines (04-137r1).
Mark raised a concern about the handling of Response frames when the
connection needed to send the response cannot be made. The group agreed with
Mark that the target should ignore such errors and approved modifying the
state machine descriptions accordingly. Mark agreed to prepare a new revision
of the proposal reflecting the agreed changes.
Mark Evans moved that 04-137r2 (r1 as revised) be recommended for inclusion
in SAS-1.1. Rob Elliott seconded the motion. In the absence of any objections,
the motion passed unanimously.
The group discussed a new proposal that covers the same concepts on the
initiator side. Mark agreed to post the new proposal to the agenda for the
September meeting.
5. New Business
5.1 SAS 1.1: Number of Pad Bytes Fix (04-170r1) [Penokie]
George Penokie presented a proposal to allow the number of fill bytes to be
non-zero in Response frames (04-170r1)
George Penokie moved that 04-170r1 be recommended for inclusion in SAS-1.1.
Rob Elliott seconded the motion. In the absence of any objections, the motion
passed unanimously.
5.2 SAS-1.1 SMP functions for SGPIO (04-165r0) [Elliott]
Rob Elliott presented a proposal to create SAS-1.1 SMP references to and usage
of SFF-8485 (Serial GPIO (SGPIO) Bus).
Rob Elliott moved that 04-165r0 be recommended for inclusion in SAS-1.1. Kevin
Marks seconded the motion. In the absence of any objections, the motion passed
unanimously.
5.3 SAS-1.1 Invalid dword handling (04-167r0) [Elliott]
Rob Elliott presented a proposal to clarify the handling of invalid dwords
(04-167r0).
The group raised numerous concerns regarding the glossary entries in the
proposal that led to major changes in the state machine definitions.
Rob agreed to prepare a new revision of the proposal for consideration at the
next meeting.
5.4 SAS-1.1 RRDY and CREDIT_BLOCKED clarifications (04-168r0) [Elliott]
Rob Elliott presented a proposal to clarify the handling of RRDY and
CREDIT_BLOCKED (04-168r0). The group requested changes and Rob agreed to
prepare a new revision of the proposal.
Rob Elliott moved that 04-168r1 (r0 as revised) be recommended for inclusion
in SAS-1.1. Mark Evans seconded the motion. In the absence of any objections,
the motion passed unanimously.
5.5 SAS-1.1 REPORT MANUFACTURER INFORMATION changes (04-175r1) [Elliott]
Rob Elliott presented a proposal to modify the Report Manufacturer Information
SMP response to include fields for both board and ASIC information (04-175r1).
The use of an IEEE OUI to identify the ASIC was questioned and Rob agreed to
revise the proposal to use the T10 vendor ID instead.
Rob Elliott moved that 04-175r2 (r1 as revised) be recommended for inclusion
in SAS-1.1. Kevin Marks seconded the motion. The motion passed 13:0:5.
5.6 SAS-1.1, SAS phy test functions diagnostic page (04-181r0) [Evans]
Mark Evans presented a proposal add a diagnostic page for SAS phy test
functions (04-181r0).
The group discussed defining the new page in SPC-3 instead of SBC-2. Mark
agreed to prepare a revised proposal for consideration at the next meeting.
5.7 SAS-1.1 BROADCAST (CHANGE) on virtual phy resets (04-183r0) [Elliott]
Rob Elliott presented a proposal to make it clear that the SMP PHY CONTROL
function LINK RESET and HARD RESET phy operations on a virtual phy do result
in BROADCAST (CHANGE) primitive (04-183r0). The group requested the addition
of Disabled to one of the lists and Rob agreed to prepare a new revision.
Rob Elliott moved that 04-183r1 (r0 as revised) be recommended for inclusion
in SAS-1.1. Tim Hoglund seconded the motion. In the absence of any objections,
the motion passed unanimously.
5.8 SAS-1.1 More counters (04-172r0) [Elliott]
Rob Elliott presented a proposal to add several new counters in SAS-1.1, to
improve the ability to identify configuration setup problems (04-172r0). The
proposal contained options for reporting counter values in descriptors or in
arrays of values.
The group discussed both reporting options as well as using normal log page
value formats.
The problems of resetting counters verses just allowing counters to wrap were
also discussed.
Rob agreed to prepare a new revision of the proposal for consideration at the
next meeting.
5.9 SAS: SM-HBA Overview (04-217r0) [Sheffield]
Bob Sheffield introduced the group to the T11.5 SM-HBA project whose goal is
extension of the Fibre Channel HBA API to encompass SAS HBAs (04-217r0).
Rob Elliott requested that the T11.5 SM-HBA working group schedule meetings
during T10 week. The SM-HBA chair, George Penokie noted the request.
5.10 SAS Signal Class Proposal (04-220r0) [Fairchild]
Steve Fairchild presented a proposal to add simple signal transmission quality
information to the Identify Address frame (04-220r0). The group raised
numerous questions about the operational details of the proposal. Steve agreed
to discuss the issues offline and return next time.
5.11 SAS Transceiver Control Mode Page Proposal (04-221r0) [Fairchild]
Steve Fairchild presented a proposal to define a mode page that allows control
of transceiver characteristics (04-221r0). Some members of the group strongly
resisted the proposal. Steve agreed to discuss the issues offline and return
next time.
5.12 SAS Pattern Generation Mode Page Proposal (04-222r0) [Fairchild]
Steve Fairchild requested that discussion of this topic be deferred to the
next meeting.
5.13 SAS - SATA Enhanced Signal Proposal (04-224r0) [Johnson]
Steve Fairchild described how the signal class and transceiver control
proposals discussed in items 5.10 and 5.11 were being presented to the SATA II
group too (04-224r0). Steve asked that this topic be removed from future
agendas.
6. Review of Recommendations
The following documents were recommended for inclusion in SAS-1.1 during this
meeting:
04-029r4 (Close Port Selector Detection Gap) [Sheffield]
04-030r4 (Fix SP Hang States) [Sheffield]
04-115r2 (SAS-1.1 Miscellaneous changes) [Elliott]
04-137r2 (ST_T (transport layer for SSP target ports) state machines) [Evans]
04-170r1 (Number of Pad Bytes Fix) [Penokie]
04-165r0 (SMP functions for SGPIO) [Elliott]
04-168r1 (RRDY and CREDIT_BLOCKED clarifications) [Elliott]
04-175r2 (REPORT MANUFACTURER INFORMATION changes) [Elliott]
04-183r1 (BROADCAST (CHANGE) on virtual phy resets) [Elliott]
7. Meeting Schedule
A SAS Protocol Working Group meeting is scheduled for:
Monday, September 13, 2004 commencing at 9:00 a.m. in Nashua, NH at the Crowne
Plaza Hotel (603-886-1200), hosted by Hitachi Cable Manchester.
Teleconference calls may be announced on the T10 reflector as needed.
8. Adjournment
The meeting was adjourned at 6:05 p.m. on Monday July 12, 2004.