GTS AXI Streaming Intel® FPGA IP for PCI Express* User Guide

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ID 813754
Date 11/04/2024
Public
Document Table of Contents
Document Table of Contents x
1. Introduction 2. Features 3. Getting Started with GTS AXI Streaming IP 4. IP Architecture and Functional Description 5. IP Parameters 6. Interfaces and Signals 7. Registers 8. Document Revision History for the GTS AXI Streaming Intel® FPGA IP for PCI Express* User Guide A. Troubleshooting/Debugging B. PIPE Mode Simulation C. Implementation of Address Translation Services (ATS) in Endpoint Mode
1. Introduction x
1.1. About PCI Express* 1.2. Goal of the GTS AXI Streaming Intel® FPGA IP for PCI Express* User Guide 1.3. Example Use Models
2. Features x
2.1. Supported Features 2.2. IP Support Status 2.3. Release Information 2.4. Recommended FPGA Fabric Speed Grades 2.5. Resource Utilization 2.6. IP Core and Design Example Support Levels
3. Getting Started with GTS AXI Streaming IP x
3.1. Downloading and Installing Quartus® Prime Software 3.2. Configuring and Generating the GTS AXI Streaming IP 3.3. Configuring and Generating GTS System PLL Clocks Intel® FPGA IP 3.4. Configuring and Generating GTS Reset Sequencer Intel® FPGA IP 3.5. Instantiating and Connecting GTS AXI Streaming IP Interfaces (and Other IPs) 3.6. Simulating the GTS AXI Streaming IP Variant 3.7. Compiling the GTS AXI Streaming IP Variant
4. IP Architecture and Functional Description x
4.1. Clocking 4.2. Resets 4.3. PCIe* Hard IP 4.4. Hard IP Interface (IF) Adaptor 4.5. Interrupts 4.6. Transaction Ordering 4.7. TX Non-Posted Metering Requirement on Application 4.8. AXI4-Stream Interface 4.9. Tag Allocation 4.10. Power Management 4.11. Config Retry Status Enable 4.12. Hot-Plug 4.13. Configuration Space Extension 4.14. Page Request Service (EP only) 4.15. Precision Time Measurement (PTM) 4.16. Single Root I/O Virtualization (SR-IOV) 4.17. Transaction Layer Packet (TLP) Bypass Mode 4.18. Scalable IOV
4.1. Clocking x
4.1.1. Reference Clock
4.5. Interrupts x
4.5.1. Legacy Interrupt 4.5.2. Message Signaled Interrupts (MSI) 4.5.3. Message Signal Interrupt Extended (MSI-X)
4.8. AXI4-Stream Interface x
4.8.1. Header Format 4.8.2. Prefix Format 4.8.3. Function Number Format 4.8.4. BAR Number Format 4.8.5. Data and Header Packing Scheme
4.16. Single Root I/O Virtualization (SR-IOV) x
4.16.1. SR-IOV Implementation
4.17. Transaction Layer Packet (TLP) Bypass Mode x
4.17.1. AXI-Lite Usage for TLP Bypass Mode 4.17.2. Configuration TLP 4.17.3. Transmit Interface 4.17.4. Receive Interface 4.17.5. Malformed TLP 4.17.6. ECRC
5. IP Parameters x
5.1. System Settings 5.2. PCIe0/PCIe1 5.3. Diagnostics
5.2. PCIe0/PCIe1 x
5.2.1. Interfaces Port 0/Interfaces Port 1 5.2.2. PCIe0/PCIe1 Settings
5.2.1. Interfaces Port 0/Interfaces Port 1 x
5.2.1.1. AXI Interfaces 0/AXI Interface 1 Settings
5.2.2. PCIe0/PCIe1 Settings x
5.2.2.1. PCIe0/PCIe1 Base Address Registers 5.2.2.2. PCIe0/PCIe1 Device Identification Registers 5.2.2.3. PCIe0/PCIe1 PCI Express / PCI Capabilities
5.2.2.3. PCIe0/PCIe1 PCI Express / PCI Capabilities x
5.2.2.3.1. PCIe0/PCIe1 Device 5.2.2.3.2. PCIe0/PCIe1 Link 5.2.2.3.3. PCIe0/PCIe1 Slot 5.2.2.3.4. PCIe0/PCIe1 Legacy Interrupt Pin Register 5.2.2.3.5. PCIe0/PCIe1 PTM 5.2.2.3.6. PCIe0/PCIe1 LTR 5.2.2.3.7. PCIe0/PCIe1 MSI 5.2.2.3.8. PCIe0/PCIe1 MSI-X 5.2.2.3.9. PCIe0/PCIe1 PASID 5.2.2.3.10. PCIe0/PCIe1 DEV SER 5.2.2.3.11. PCIe0/PCIe1 PRS 5.2.2.3.12. PCIe0/PCIe1 Power Management 5.2.2.3.13. PCIe0/PCIe1 VSEC 5.2.2.3.14. PCIe0/PCIe1 ATS 5.2.2.3.15. PCIe0/PCIe1 TPH 5.2.2.3.16. PCIe0/PCIe1 ACS 5.2.2.3.17. PCIe0/PCIe1 Hot-Plug 5.2.2.3.18. PCIe0/PCIe1 VIRTIO
5.2.2.3.18. PCIe0/PCIe1 VIRTIO x
5.2.2.3.18.1. PCIe0/PCIe1 PF<n> VIRTIO STRUCTURES
6. Interfaces and Signals x
6.1. Overview 6.2. Clocks and Resets 6.3. AXI4-Stream Interfaces 6.4. Configuration Intercept Interface 6.5. Configuration Extension Bus (CEB) Interface 6.6. Control Shadow Interface 6.7. Transmit Flow Control Credit Interface 6.8. Completion Timeout Interface 6.9. Control and Status Register Responder Interface 6.10. Function Level Reset Interface 6.11. TLP Bypass Error Reporting Interface 6.12. Error Interface 6.13. VF Error Flag Interface 6.14. VIRTIO PCI* Configuration Access Interface 6.15. Precision Time Measurement (PTM) Interface 6.16. Serial Data Signals 6.17. Miscellaneous Signals
6.2. Clocks and Resets x
6.2.1. Interface Clock Signals 6.2.2. Interface Reset Signals
6.3. AXI4-Stream Interfaces x
6.3.1. AXI4-Stream Receive (RX) Interface 6.3.2. AXI4-Stream Transmit (TX) Interface
6.4. Configuration Intercept Interface x
6.4.1. Configuration Intercept Request Interface 6.4.2. Configuration Intercept Response Interface
6.5. Configuration Extension Bus (CEB) Interface x
6.5.1. Configuration Extension Bus Request Interface 6.5.2. Configuration Extension Bus Response Interface
6.10. Function Level Reset Interface x
6.10.1. Function Level Reset Received Interface 6.10.2. Function Level Reset Completion Interface
6.14. VIRTIO PCI* Configuration Access Interface x
6.14.1. VIRTIO PCI Configuration Access Request Interface 6.14.2. VIRTIO PCI Configuration Access Completion Interface
7. Registers x
7.1. Register Address Map 7.2. PCI Express* Configuration Space 7.3. HIP Port and Status Registers 7.4. Soft Register Address Map 7.5. Indirect Register Access 7.6. Virtual Function (VF) PCI Express* Configuration Space 7.7. Intel-Defined VSEC Capability Register
7.2. PCI Express* Configuration Space x
7.2.1. PCI Express* Configuration Header Registers 7.2.2. PCI Express* Capability Structures 7.2.3. Physical Layer 16.0 GT/s Extended Capability Structures
7.3. HIP Port and Status Registers x
7.3.1. Root Port Interrupt Registers 7.3.2. PTM Registers
7.4. Soft Register Address Map x
7.4.1. Control Registers 7.4.2. Debug Registers 7.4.3. Performance Monitor Registers
7.6. Virtual Function (VF) PCI Express* Configuration Space x
7.6.1. VF PCI-Compatible Configuration Space Header Type0 7.6.2. VF PCI Express* Capability Structure 7.6.3. VF Message Signal Interrupt Extended (MSI-X) Capability Structure 7.6.4. VF Alternative Routing ID (ARI) Capability Structure 7.6.5. VF TLP Processing Hints (TPH) Capability Structure 7.6.6. VF Address Translation Services (ATS) Capability Structure 7.6.7. VF Access Control Services (ACS) Capability Structure
7.6.1. VF PCI-Compatible Configuration Space Header Type0 x
7.6.1.1. Vendor ID and Device ID Registers 7.6.1.2. Command Registers 7.6.1.3. Status Registers 7.6.1.4. Revision ID and Class Code Register 7.6.1.5. BIST, Header Type, Latency Timer, and Cache Line Size Registers 7.6.1.6. Subsystem Vendor ID and Subsystem ID Register 7.6.1.7. Capabilities Pointer
7.6.2. VF PCI Express* Capability Structure x
7.6.2.1. PCI Express* Capability List Register 7.6.2.2. PCI Express* Device Capabilities Register 7.6.2.3. PCI Express* Device Control and Status Register 7.6.2.4. Link Capabilities Register 7.6.2.5. Link Control and Status Register 7.6.2.6. PCI Express* Device Capabilities 2 Register 7.6.2.7. PCI Express* Device Control and Status 2 Register 7.6.2.8. Link Capabilities 2 Register 7.6.2.9. Link Control and Status 2 Register
7.6.3. VF Message Signal Interrupt Extended (MSI-X) Capability Structure x
7.6.3.1. MSI-X Control Register 7.6.3.2. MSI-X Table Offset Register 7.6.3.3. MSI-X Pending Bit Array Register
7.6.4. VF Alternative Routing ID (ARI) Capability Structure x
7.6.4.1. ARI Enhanced Capability Header Register 7.6.4.2. ARI Capability and Control Registers
7.6.5. VF TLP Processing Hints (TPH) Capability Structure x
7.6.5.1. TPH Requester Enhanced Capability Header 7.6.5.2. TPH Requester Capability Register 7.6.5.3. TPH Requester Control Register
7.6.6. VF Address Translation Services (ATS) Capability Structure x
7.6.6.1. ATS Enhanced Capability Header 7.6.6.2. ATS Capability Register and Control Register
7.6.7. VF Access Control Services (ACS) Capability Structure x
7.6.7.1. ACS Extended Capability Header 7.6.7.2. ACS Capability and Control Register 7.6.7.3. Egress Control Vector
A. Troubleshooting/Debugging x
A.1. Hardware A.2. Debug Toolkit
A.1. Hardware x
A.1.1. Debugging Link Training Issues A.1.2. Debugging Data Transfer and Performance Issues
A.1.1. Debugging Link Training Issues x
A.1.1.1. Generic Tools and Utilities A.1.1.2. Signal Tap Logic Analyzer
A.2. Debug Toolkit x
A.2.1. Overview A.2.2. Enabling the Agilex™ 5 Debug Toolkit A.2.3. Launching the Agilex™ 5 Debug Toolkit A.2.4. Using the Agilex™ 5 Debug Toolkit A.2.5. Using the Agilex™ 5 Link Inspector
A.2.4. Using the Agilex™ 5 Debug Toolkit x
A.2.4.1. Main View A.2.4.2. Toolkit Parameters A.2.4.3. Channel Parameters A.2.4.4. Eye Viewer
A.2.4.2. Toolkit Parameters x
A.2.4.2.1. Agilex™ 5 Information A.2.4.2.2. Event Counter A.2.4.2.3. P0 Configuration Space
A.2.4.3. Channel Parameters x
A.2.4.3.1. General PHY A.2.4.3.2. TX Path A.2.4.3.3. RX Path
C. Implementation of Address Translation Services (ATS) in Endpoint Mode x
C.1. Sending Translated/Untranslated Requests C.2. Sending a Page Request Message from the Endpoint (EP) to the Root Complex (RC) C.3. Invalidating Requests/Completions
1. Introduction
2. Features
3. Getting Started with GTS AXI Streaming IP
4. IP Architecture and Functional Description
5. IP Parameters
6. Interfaces and Signals
7. Registers
8. Document Revision History for the GTS AXI Streaming Intel® FPGA IP for PCI Express* User Guide
A. Troubleshooting/Debugging
B. PIPE Mode Simulation
C. Implementation of Address Translation Services (ATS) in Endpoint Mode

4.17. Transaction Layer Packet (TLP) Bypass Mode

The GTS AXI Streaming IP includes a TLP Bypass mode for both downstream and upstream ports to allow the implementation of advanced features such as:
  • The upstream port or the downstream port of a switch.
  • A custom implementation of a Transaction Layer to meet specific user requirements.

When the TLP Bypass feature is enabled, the PCIe* Hard IP does not process received TLPs internally but outputs them to the user application. This allows the application to implement a custom Transaction Layer. In the TLP Bypass mode, the PCIe* Hard IP does not generate/check the ECRC and does not remove it if the received TLPs has the ECRC by default.

The GTS AXI Streaming IP in TLP Bypass mode still includes some of the PCIe* configuration space registers related to link operation. It interfaces with the application logic via the AXI-Stream interface (for all TLP traffic), the AXI-Lite interface (for Lite TL's configuration registers access) and other miscellaneous signals.

In the TLP Bypass mode, the PCIe* Hard IP supports the autonomous Hard IP feature. It responds to configuration accesses before the FPGA fabric enters user mode with Completions with a CRS code. However, in the TLP Bypass mode, Configuration-via-Protocol (CvP) is not supported.

Figure 31.  TLP Bypass Mode

Section Content
AXI-Lite Usage for TLP Bypass Mode
Configuration TLP
Transmit Interface
Receive Interface
Malformed TLP
ECRC

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