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

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ID 790711
Date 1/24/2025
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Document Table of Contents
Document Table of Contents x
1. Introduction 2. Features 3. Getting Started with the AXI Streaming Intel® FPGA IP for PCI Express* 4. IP Architecture and Functional Description 5. AXI Streaming Intel® FPGA IP for PCI Express* Parameters 6. Interfaces and Signals 7. Register Descriptions 8. Document Revision History for the AXI Streaming Intel® FPGA IP for PCI Express* User Guide A. Specifications B. Simulating the Design Example
1. Introduction x
1.1. Goal of the AXI Streaming Intel® FPGA IP for PCI Express* User Guide 1.2. Intended Audience for the AXI Streaming Intel® FPGA IP for PCI Express* User Guide 1.3. What is PCI Express* ? 1.4. What are the Intel® FPGA IPs for PCI Express* ? 1.5. What is the AXI Streaming Intel® FPGA IP for PCI Express* ? 1.6. Example Use Models 1.7. Design Flow Requirements
1.7. Design Flow Requirements x
1.7.1. Design Software 1.7.2. Hardware
2. Features x
2.1. Supported Features 2.2. Device Family Support
3. Getting Started with the AXI Streaming Intel® FPGA IP for PCI Express* x
3.1. Download and Install Quartus Software 3.2. Obtain and Install Intel FPGA IPs and Licenses 3.3. Configure and Generate the AXI Streaming Intel® FPGA IP for PCI Express* 3.4. About the AXI Streaming Intel® FPGA IP for PCI Express Design Examples 3.5. Instantiate and Connect the AXI Streaming Intel® FPGA IP for PCI Express* Interfaces 3.6. Simulate the AXI Streaming Intel® FPGA IP for PCI Express* IP Variant 3.7. Compile the AXI Streaming Intel® FPGA IP for PCI Express* IP Variant 3.8. Software Drivers for AXI Streaming Intel® FPGA IP for PCI Express* IP Variant 3.9. Build the Application for the AXI Streaming Intel® FPGA IP for PCI Express* IP Variant 3.10. Verification with the AXI Streaming Intel® FPGA IP for PCI Express* IP Variant 3.11. Debugging with the AXI Streaming Intel® FPGA IP for PCI Express* IP Variant
3.4. About the AXI Streaming Intel® FPGA IP for PCI Express Design Examples x
3.4.1. Functional Description for the Programmed Input/Output (PIO) Design Example
3.5. Instantiate and Connect the AXI Streaming Intel® FPGA IP for PCI Express* Interfaces x
3.5.1. Clocking and Resets 3.5.2. Application Packet Datapath 3.5.3. Enabling Additional Features 3.5.4. Enabling Optional Interfaces
3.6. Simulate the AXI Streaming Intel® FPGA IP for PCI Express* IP Variant x
3.6.1. Simulating the Design Example
3.6.1. Simulating the Design Example x
3.6.1.1. Steps to Run Simulations
3.6.1.1. Steps to Run Simulations x
3.6.1.1.1. Siemens EDA QuestaSim* Simulator 3.6.1.1.2. VCS* Simulator 3.6.1.1.3. VCS* MX Simulator
3.8. Software Drivers for AXI Streaming Intel® FPGA IP for PCI Express* IP Variant x
3.8.1. Installing the Linux Kernel Driver
3.9. Build the Application for the AXI Streaming Intel® FPGA IP for PCI Express* IP Variant x
3.9.1. Running the Design Example
3.9.1. Running the Design Example x
3.9.1.1. Running the PIO Design Example
3.11. Debugging with the AXI Streaming Intel® FPGA IP for PCI Express* IP Variant x
3.11.1. Debugging Link Training Issues 3.11.2. Debugging Data Transfer and Performance Issues
3.11.1. Debugging Link Training Issues x
3.11.1.1. Operating System Tools and Utilities 3.11.1.2. Signal Tap Logic Analyzer 3.11.1.3. Additional Debug Tools
3.11.2. Debugging Data Transfer and Performance Issues x
3.11.2.1. Advanced Error Reporting (AER) 3.11.2.2. Second-Level Debug Tools
4. IP Architecture and Functional Description x
4.1. Clocks and Resets 4.2. PCIe Hard IP (HIP) 4.3. HIP Interface (IF) Adaptor 4.4. Application Error Reporting 4.5. Debug Toolkit and Hard IP (HIP) Reconfiguration Interface 4.6. Configuration Space Extension 4.7. Control Shadow 4.8. Configuration Intercept Interface 4.9. Power Management 4.10. Legacy Interrupt 4.11. Credit Handling 4.12. Completion Timeout 4.13. Transaction Ordering 4.14. Page Request Service (PRS) Events 4.15. TX Non-Posted Metering Requirement on Application 4.16. MSI Pending 4.17. D-State Status 4.18. Configuration Retry Status Enable 4.19. AXI-Streaming Interface 4.20. Precision Time Measurement (PTM)
5. AXI Streaming Intel® FPGA IP for PCI Express* Parameters x
5.1. Parameter Editor Parameters
6. Interfaces and Signals x
6.1. Overview 6.2. Clocks and Resets 6.3. Application Packet Interface 6.4. Configuration Extension Bus Interface 6.5. Configuration Intercept Interface 6.6. Function Level Reset Interface 6.7. Control Shadow Interface (st_ctrlshadow) 6.8. Completion Timeout Interface (st_cplto) 6.9. Miscellaneous Signals 6.10. Control and Status Register Responder Interface (lite_csr) 6.11. Error Interface (st_err) 6.12. VF Error Flag Interface (vf_err/sent_vfnonfatalmsg) 6.13. VIRTIO PCI* Configuration Access Interface 6.14. Serial Data Signals
6.2. Clocks and Resets x
6.2.1. Interface Clock Signals 6.2.2. Interface Reset Signals
6.3. Application Packet Interface x
6.3.1. Header Format 6.3.2. Prefix Format 6.3.3. Function Number Format 6.3.4. BAR Number Format 6.3.5. Data and Header Packing Schemes 6.3.6. Application Packet Transmit Interface (st_tx) 6.3.7. Application Packet Receive Interface (st_rx) 6.3.8. Flow Control Credit Handling
6.3.5. Data and Header Packing Schemes x
6.3.5.1. HIP Native Mode Packing 6.3.5.2. Compact Packing 6.3.5.3. Simple Packing
6.3.5.1. HIP Native Mode Packing x
6.3.5.1.1. Application Logic Guidelines for the AXI Streaming TX Interface in HIP Native Mode (R-Tile) 6.3.5.1.2. Application Logic Guidelines for the AXI Streaming RX Interface in HIP Native Mode
6.3.5.2. Compact Packing x
6.3.5.2.1. Application Logic Guidelines for the AXI Streaming TX Interface in Compact Mode (P/R-Tiles) 6.3.5.2.2. Application Logic Guidelines for the AXI Streaming RX Interface in Compact Mode (P/R-Tiles)
6.3.5.3. Simple Packing x
6.3.5.3.1. Application Logic Guidelines for the AXI Streaming TX Interface in Simple Mode (P/R-Tiles) 6.3.5.3.2. Application Logic Guidelines for the AXI Streaming RX Interface in Simple Mode (P/R-Tiles)
6.3.8. Flow Control Credit Handling x
6.3.8.1. Application Transmit Flow Control Credit Interface (st_txcrdt) 6.3.8.2. Application Receive Flow Control Credit Interface (st_rxcrdt) (R-Tile Only)
6.4. Configuration Extension Bus Interface x
6.4.1. Configuration Extension Bus Request Interface (st_cebreq) 6.4.2. Configuration Extension Bus Response Interface (st_cebresp)
6.5. Configuration Intercept Interface x
6.5.1. Configuration Intercept Request Interface (st_ciireq) 6.5.2. Configuration Intercept Response Interface (st_ciiresp)
6.6. Function Level Reset Interface x
6.6.1. Function Level Reset Received Interface (st_flrrcvd) 6.6.2. Function Level Reset Completion Interface (st_flrcmpl)
6.13. VIRTIO PCI* Configuration Access Interface x
6.13.1. VIRTIO PCI* Config Access Request Interface (st_virtio_pcicfgreq) 6.13.2. VIRTIO PCI* Config Access Completion Interface (st_virtio_pcicfgcmpl)
7. Register Descriptions x
7.1. Register Address Map 7.2. PCIe Configuration Space 7.3. AXI Streaming Intel® FPGA IP for PCI Express* Soft Register Address Map
7.2. PCIe Configuration Space x
7.2.1. PCIe Configuration Space Registers
7.3. AXI Streaming Intel® FPGA IP for PCI Express* Soft Register Address Map x
7.3.1. AXI Streaming Intel® FPGA IP for PCI Express* Control Registers 7.3.2. IP Debug Registers 7.3.3. IP Performance Monitor Registers
7.3.1. AXI Streaming Intel® FPGA IP for PCI Express* Control Registers x
7.3.1.1. AXI Streaming Intel® FPGA IP for PCI Express* Version 7.3.1.2. AXI Streaming Intel® FPGA IP for PCI Express* Features 7.3.1.3. AXI Streaming Intel® FPGA IP for PCI Express* Interface Attributes 7.3.1.4. HOT PLUG GEN CTRL 7.3.1.5. POWER MANAGEMENT CTRL 7.3.1.6. LEGACY INTERRUPT CTRL 7.3.1.7. CFG REG IA CTRL 7.3.1.8. CFG REG IA FN NUM 7.3.1.9. CFG REG IA WRDATA 7.3.1.10. CFG REG IA RDDATA 7.3.1.11. PRS CTRL 7.3.1.12. MSI PENDING CTRL 7.3.1.13. MSI PENDING 7.3.1.14. D-STATE STS 7.3.1.15. CFG RETRY CTRL
7.3.2. IP Debug Registers x
7.3.2.1. HIP Status 7.3.2.2. HIP BP CYCLES 7.3.2.3. HIA BP CYCLES 7.3.2.4. APP BP CYCLES 7.3.2.5. HIA RX BP CYCLES
7.3.3. IP Performance Monitor Registers x
7.3.3.1. PERFMON CTRL 7.3.3.2. TX MRD TLP 7.3.3.3. TX MWR TLP 7.3.3.4. TX MSG TLP 7.3.3.5. TX CFGWR TLP 7.3.3.6. TX CFGRD TLP 7.3.3.7. RX MRD TLP 7.3.3.8. RX MWR TLP 7.3.3.9. RX MSG TLP 7.3.3.10. RX CFGWR TLP 7.3.3.11. RX CFGRD TLP 7.3.3.12. TX MEM DATA 7.3.3.13. TX CPL DATA 7.3.3.14. RX MEM DATA 7.3.3.15. RX CPL DATA
A. Specifications x
A.1. R-Tile Specifications
A.1. R-Tile Specifications x
A.1.1. R-Tile Completion Buffer Size A.1.2. Power Management A.1.3. MSI and MSI-X
B. Simulating the Design Example x
B.1. Testbench
B.1. Testbench x
B.1.1. Testbench Modules B.1.2. Test Driver Module B.1.3. PIO Design Example Testbench B.1.4. Root Port BFM
1. Introduction
2. Features
3. Getting Started with the AXI Streaming Intel® FPGA IP for PCI Express*
4. IP Architecture and Functional Description
5. AXI Streaming Intel® FPGA IP for PCI Express* Parameters
6. Interfaces and Signals
7. Register Descriptions
8. Document Revision History for the AXI Streaming Intel® FPGA IP for PCI Express* User Guide
A. Specifications
B. Simulating the Design Example

7.1. Register Address Map

The application can access registers of the IP as well as PCIe* configuration space registers of physical functions present in the design.

The following figure shows the address map of registers when accessing them from the AXI Lite CSR Interface (lite_csr).

The following sections describe the register addresses and bit mappings for each register space.

Figure 49. IP Address Map

All AXI-Lite accesses are completed with appropriate response (BRESP, RRESP) so that the bus does not stall.

  • AXI-Lite access to address ranges defined in Register Address Map shall be completed successfully with BRESP/RRESP="OK". This includes access to unimplemented, i.e., Reserved, register offsets within the valid address range.
    • Read to reserved register shall return value of all zeroes.
    • Write to register location containing any number of RO or RO/V bit, design shall return write response BRESP=OKAY. Write is dropped for the RO or RO/V bit location(s). This is not an error condition.
  • AXI-Lite access to address beyond the register map should be completed gracefully with BRESP/RRESP="DECERR". Read returns all zeroes and write is dropped.
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