1. PCIe 2.0 Base Specification Protocol And Software Overview
4/19/2017 3:23 PM
PCIe 2.0 Base Specification Protocol And Software Overview
Dave Harriman and Joe Cowan PCIe Protocol and Software Workgroups
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. Today’s Topics Introduction Overview of changes Completion Timeout ECN
4/19/2017 3:23 PM
Today’s Topics
Introduction
Overview of changes
Completion Timeout ECN
Function Level Reset ECR
2.0 base spec link speed controls
Link Bandwidth Notification ECR
Access Control Services ECR
Trusted Config Space ECN
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

3. 4/19/2017 3:23 PM
Introduction
Q1 06
Q2 06
Q3 06
Base .7 .9
2.0
PCI-SIG updating PCI Express (PCIe) specifications this year
Single largest change – 5gigabit/second (Gb/s) signaling speed
Optional new capability
Several other improvements
Today’s focus
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

4. 4/19/2017 3:23 PM
Overview Of Changes
Engineering Change Requests (ECRs), Engineering Change Notices (ECNs), and Errata
ECRs become ECNs after review/approval
All ECNs and Errata included in 2.0 publication
Errata – highlights
Root Complex Event Collector Base Class Code conflict
Clarifications of uncommon error cases
Register bit clarifications on defaults, implementation requirements
Interrupt disable bit consistency with conventional PCI
5Gb/s signaling speed not an ECN
Included only in 2.0
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

5. Completion Timeout ECN
4/19/2017 3:23 PM
Completion Timeout ECN
Required: Architected disable bit
“Turns off” timeout
Not to be used in normal operation
Optional Completion Timeout time value programmability
Devices indicate supported ranges from the four bins defined
Two selectable ranges for each bin
4s to 64s
250ms
to 4s
10ms
to 250ms
50us
to 10ms
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

6. Function Level Reset (FLR) ECR
4/19/2017 3:23 PM
Function Level Reset (FLR) ECR
Background: New type of reset
Existing resets may (but not required to) reset function internals
FLR definition requires function internal reset
General concept: SW initiated function-specific reset
RESET “FAMILY TREE”
Conventional
FLR
Cold / Warm
(PERST#)
Hot
S.B.R.
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

7. Function Level Reset (FLR) ECR
4/19/2017 3:23 PM
Function Level Reset (FLR) ECR
Endpoints only
All types: Legacy, Native, Integrated
Register interface simple
Implementation and effects potentially complex
Resets internal function-specific state
Not all architected registers are reset
Hardware Initialized (HwInit), BIOS set, etc.
Function
Reset F0 F1 F2
PCIe
Endpoint
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

8. 2.0 Base Link Speed Controls External link speed management model
4/19/2017 3:23 PM
2.0 Base Link Speed Controls External link speed management model
By default, hardware automatically trains to the greatest common speed
Software can set an upper bound on the speed
Hardware can always limit speed for Link reliability
By default, hardware is permitted to change the speed autonomously for other purposes, such as power management
Software can disable this
There is a new mechanism supporting software control for entering/exiting Compliance Mode
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

9. 2.0 Base Link Speed Controls New/modified regs for external links
4/19/2017 3:23 PM
2.0 Base Link Speed Controls New/modified regs for external links
Link capability register
Maximum Link Speed field renamed to Supported Link Speeds
Link Status register
Link Speed field renamed to Current Link Speed
(new) Link Control 2 register
Target Link Speed field
Hardware Autonomous Speed Disable bit
Enter Compliance bit
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

10. 2.0 Base Link Speed Controls Root complex internal links
4/19/2017 3:23 PM
2.0 Base Link Speed Controls Root complex internal links
Can report their supported and current speeds via similar changes to their Capability and Status registers
Speed is not controllable via architected mechanisms
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

11. Bandwidth Notification ECR General
4/19/2017 3:23 PM
Bandwidth Notification ECR General
Motivation
Need mech for PCIe-aware software to be notified when Link bandwidth (speed or width) changes, due to hardware-autonomous link retraining
Can help reduce vendor support costs by having software notify users if marginal links retrain to a lower bandwidth, impacting system performance
Want it available ASAP for all new PCIe components, not just those supporting 5 Gb signaling
Though specified in separate document, still logically coupled with link speed controls
ECR timing is somewhat tied to link speed controls stabilizing
Plan to make this a mandatory feature for PCIe Base 2.0 (optional for 1.1)
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

12. Bandwidth Notification ECR Mechanism details
4/19/2017 3:23 PM
Bandwidth Notification ECR Mechanism details
Link capability register
Link Bandwidth Notification Capability bit
Link control register
Hardware Autonomous Width Disable bit
Link Bandwidth Management Interrupt Enable bit
Link Autonomous Bandwidth Interrupt Enable bit
Link status register
Link Bandwidth Management Status bit
Link Autonomous Bandwidth Status bit
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

13. Access Control Services (ECR) General
4/19/2017 3:23 PM
Access Control Services (ECR) General
Set of access control services for downstream ports and functions in multi-function devices
New extended capability and status/mask/severity bits in AER
Source validation – downstream Ports range check Requester ID BusNum in upstream Request TLPs
Peer-to-peer controls determine whether to forward directly, block, or redirect peer-to-peer Request TLPs to the RC for access validation
Controls being considered for functionality defined by the Address Translation Services ECR
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

14. Access Control Services ECR Details
4/19/2017 3:23 PM
Access Control Services ECR Details
Applicable to
Root Complexes
Switches
Multi-function devices
Planned services
Source Validation
P2P Redirect & Upstream Forwarding
P2P Egress Controls
Translation Blocking (ATS)
Direct Translated P2P (ATS)
CPU
Root Complex
Memory
Switch
MFD 1
End
point 2
End
point 3
End
point 4
Fn0
Fn1
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

15. Trusted Config Space ECN
4/19/2017 3:23 PM
Trusted Config Space ECN
ECR presented in detail at WinHEC 2005
Final ECN completed in July 2005
No significant changes before finalized
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

16. Call To Action Comprehend Upcoming PCIe 2.0 Base spec improvements
4/19/2017 3:23 PM
Call To Action
Comprehend Upcoming PCIe 2.0 Base spec improvements
Many enhancements in 2.0 besides 5 Gb/s signaling speed
Start planning your 2.0 product now
Keep in-sync with PCI-SIG for further updates
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

17. Additional Resources Web resources: http://www.pcisig.com
4/19/2017 3:23 PM
Additional Resources
Web resources:
Specs, white papers, and more
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

18. 4/19/2017 3:23 PM
© 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.