Accredited Standards Committee*
InterNational Committee for Information Technology Standards (INCITS)
Doc. No.: T10/05-272r0
Date: July 12, 2005
Reply to: John Lohmeyer
To: T10 Membership
From: Ralph Weber and John Lohmeyer
Subject: SAS Protocol WG -- July 11, 2005
Colorado Springs, CO
Agenda
1. Opening Remarks
2. Approval of Agenda
3. Attendance and Membership
4. Old Business
4.1 SAS-2 protocol for changing driver amplitude (03-285r2) [Evans]
4.2 SAS-2 More counters (04-172r0) [Elliott]
4.3 SAS-1.1 revision 9 letter ballot comment resolution as of SAS1R09b
(05-169r3) [Elliott]
4.4 SAS-2 Zoning (05-144r4) [Liao, Gorshe and Grieff]
4.5 SAS-1.1: BreakWait issue resolution (05-145r0) [Hoglund]
4.6 SAS 1.1 - Transport layer retry and argument passing fixes (05-143r3)
[Penokie]
4.7 SAS-2: New NOTIFY to indicate imminent power failure (05-167r5)
[Penokie]
5. New Business
5.1 SAS-1.1: Clarify STP exceptions to SATA link protocol (05-224r1)
[Sheffield]
5.2 SAS 1.1 SSP Transport Response-DATA ACK Timing Issues (05-225r0)
[Stoops]
5.3 SAS 2.0 Allow Zoning Enhancements to Leave Expanders (05-235r1)
[D'Avignon]
5.4 SAS 2.0 Zoning Wide Port Group Assignments (05-236r0) [D'Avignon]
5.5 Minutes of T10 SAS2 Zoning Conference Call June 16, 2005 (05-250r0)
[Liao]
5.6 SAS 2.0 Ensuring Delivery of Broadcasts In Zoned Expanders (05-258r0)
[D'Avignon, Roberts]
5.7 Minutes: Status Report from SAS 2.0 Zoning Subgroup (05-277r0) [Liao]
5.8 SAS 1.1 r09b issues (05-278r0) [Martin]
5.9 Self-Referencing Expanders () [Sheffield]
6. Review of Recommendations
7. Meeting Schedule
8. Adjournment
Results of Meeting
1. Opening Remarks
John Lohmeyer called the meeting to order at 9:05 a.m. Monday, July 11, 2005.
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 the following additions and changes:
5.9 Self-Referencing Expanders () [Sheffield]
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
---------------------------------- -- ------------------------------------
Mr. James A. Lott, Jr. P Dallas Semiconductor
Mr. Kevin Marks P Dell, Inc.
Mr. David Black A EMC Corp.
Mr. Kenneth Hirata A Emulex
Mr. Robert H. Nixon P Emulex
Mr. Ralph O. Weber P ENDL Texas
Mr. David Freeman V Finisar
Mr. Mike Fitzpatrick P Fujitsu
Mr. Steven Fairchild V Hewlett Packard Co.
Mr. Zane Daggett P Hitachi Cable Manchester
Mr. Dan Colegrove P Hitachi Global Storage Tech.
Mr. Robert Sheffield P Intel Corp.
Mr. Dennis Moore AV KnowledgeTek, Inc.
Mr. Brad Besmer V LSI Logic Corp.
Mr. Brian Day V LSI Logic Corp.
Mr. Tim Hoglund V LSI Logic Corp.
Mr. Steve Johnson V LSI Logic Corp.
Mr. John Lohmeyer P LSI Logic Corp.
Mr. William Petty V LSI Logic Corp.
Mr. Martin Czekalski A Maxtor Corp.
Mr. Mark Evans P Maxtor Corp.
Mr. Mark Overby P Nvidia Corp.
Mr. Tim Symons A# PMC-Sierra
Dr. Steve Gorshe V PMC-Sierra, Inc.
Dr. Heng Liao V PMC-Sierra, Inc.
Mr. Craig W. Carlson A QLogic Corp.
Mr. Greg Elkins V QLogic Corp.
Mr. Jim Walch V QLogic Corp.
Mr. Jim Walch T QLOGIC CORPORATION
Mr. Jim Walch T QLOGIC CORPORATION
Mr. Gerald Houlder P Seagate Technology
Mr. William Martin P Sierra Logic, Inc.
Mr. Tom Skaar V Vitesse
Mr. Ed D'Avignon V Vitesse Semiconductor
Mr. Gregory Tabor P Vitesse Semiconductor
35 People Present
Status Key: P - Principal
A,A# - Alternate
AV - Advisory Member
L - Liaison
V - Visitor
4. Old Business
4.1 SAS-2 protocol for changing driver amplitude (03-285r2) [Evans]
Mark Evans requested that discussion of this topic be deferred to the next
meeting.
4.2 SAS-2 More counters (04-172r0) [Elliott]
Rob Elliott requested that discussion of this topic be deferred to the next
meeting.
4.3 SAS-1.1 revision 9 letter ballot comment resolution as of SAS1R09b
(05-169r3) [Elliott]
Rob Elliott stated that no Letter Ballot issues need discussion other than
those covered elsewhere on the agenda.
4.4 SAS-2 Zoning (05-144r4) [Liao, Gorshe and Grieff]
Heng Liao presented the revised SAS-2 Zoning proposal (05-144r4).
George Penokie asked that consideration be given to using a name other than
Zoning. Several proposals were made but the only one that had any support was
'Traffic Control'.
Steve Fairchild noted that not very many fields are available in the Report
General command subsequent to the Zoning changes. Heng agreed to define the
Zoning functions in a separate command in the next revision of the proposal.
Zoning SATA devices was discussed. It was agreed that the proposal depends on
a SATA timing scenario that is not a SATA required behavior. Mark Overby
requested that the SATA Cold Presence Detect feature be used in those cases
where it is available.
4.5 SAS-1.1: BreakWait issue resolution (05-145r0) [Hoglund]
Tim Hoglund stated that the SAS-1.1 issues have been resolved and a new
proposal for SAS-2 will be uploaded with a different document number when
appropriate.
4.6 SAS 1.1 - Transport layer retry and argument passing fixes (05-143r3)
[Penokie]
George Penokie presented a proposal the effect of which was a near total
rewrite of the SAS-1.1 state machines (05-143r3). The group requested changes
and corrections and George agreed to prepare a new revision of the proposal.
Rob Elliott requested that the revised proposal be ready in the next few weeks
so that it can be incorporated in SAS-1.1 revision 9e.
4.7 SAS-2: New NOTIFY to indicate imminent power failure (05-167r5) [Penokie]
George Penokie presented a revised proposal to add a NOTIFY primitive to
indicate imminent power failure (05-167r4). The group requested changes in the
description of how sending the primitive is repeated three times and George
agreed to prepare a revised proposal.
George Penokie moved that 05-167r5 (r4 as modified) be recommended for
inclusion in SAS-2. Gerry Houlder seconded the motion. He explained that
support for this feature requires hardware changes and delays are intolerable
in product development schedules. The motion passed 9:0:8.
5. New Business
5.1 SAS-1.1: Clarify STP exceptions to SATA link protocol (05-224r1)
[Sheffield]
Bob Sheffield presented a proposal to move the definition of SATA_CONT
handling to the link layer definitions (05-224r0). Rob Elliott stated that
moving the text was not an ideal solution and Bob responded with a new
revision of the proposal that would only add references and a table.
Bob stated that his developers would prefer to see the text moved.
As the proposal was discussed several changes were requested and Bob agreed to
prepare a new revision.
Bob Sheffield moved that 05-224r1 (r0 as modified) be accepted into the Letter
Ballot comment resolution for SAS-1.1. Rob Elliott seconded the motion. In the
absence of any objections, the motion passed unanimously.
5.2 SAS 1.1 SSP Transport Response-DATA ACK Timing Issues (05-225r0) [Stoops]
George Penokie reported that the issues raised by 05-225r0 are covered in
05-143r3 (see agenda item 4.6).
5.3 SAS 2.0 Allow Zoning Enhancements to Leave Expanders (05-235r1)
[D'Avignon]
Ed D'Avignon requested that discussion of this topic be deferred to the next
conference call.
5.4 SAS 2.0 Zoning Wide Port Group Assignments (05-236r0) [D'Avignon]
Ed D'Avignon requested this topic be removed from this and future agendas.
5.5 Minutes of T10 SAS2 Zoning Conference Call June 16, 2005 (05-250r0)
[Liao]
This topic was covered under agenda item 5.7.
5.6 SAS 2.0 Ensuring Delivery of Broadcasts In Zoned Expanders (05-258r0)
[D'Avignon, Roberts]
Ed D'Avignon presented a proposal to increase the reliability of Zoned
Broadcasts (05-258r0). The proposal unearthed a plethora of issues related to
Zoned Broadcasts. The group agreed to continue the discussion of this topic
during the next SAS-2 Zoning teleconference call.
5.7 Minutes: Status Report from SAS 2.0 Zoning Subgroup (05-277r0) [Liao]
Heng Liao presented a status report for the work on SAS Zoning (05-227r0).
5.8 SAS 1.1 r09b issues (05-278r0) [Martin]
Rob Elliott reported that all the issues raised in 05-278r0 have been included
in the resolutions for existing SAS-1.1 Letter Ballot comments. Bill Martin
agreed that no additional discussion was needed.
5.9 Self-Referencing Expanders () [Sheffield]
Bob Sheffield questioned how routing entries should be handled during
Discovery when the reference is to the expander itself. The group discussed
whether the existing SAS-1.1 text is sufficient and what, if any,
modifications might be appropriate.
Rob Elliott agreed to add a new Intel comment describing the problem for which
the resolution will be adding a new sentence stating that an expander that
detects a connection from one of its Phys to another should disable both Phys.
Later in the day Bob Sheffield asked that the issue be reconsidered and
different changes were agreed upon.
6. Review of Recommendations
The following document was recommended for inclusion in SAS-2 during this
meeting:
05-167r5 (SAS-2: New NOTIFY to indicate imminent power failure) [Penokie]
7. Meeting Schedule
A SAS Protocol Working Group meeting is scheduled for:
Monday, September 12, 2005 commencing at 9:00 a.m. in Vancouver, BC at the
Vancouver Marriott Pinnacle Downtown Hotel (604-684-1128; Reservations:
800-207-4150), hosted by PMC-Sierra.
Teleconference calls will be announced on the T10 reflector as needed.
8. Adjournment
The meeting was adjourned at 5:20 p.m. on Monday July 11, 2005.