Ethernet Subsystem Intel® FPGA IP User Guide

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ID 773413
Date 9/16/2024
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Document Table of Contents
Document Table of Contents x
1. Introduction 2. Feature Description 3. Ethernet Subsystem Parameters 4. Subsystem IP Blocks 5. Interfaces and Signals 6. Recommended Clock Connections 7. Register Descriptions 8. Ethernet SS IP Example Design 9. Document Revision History for the Ethernet Subsystem Intel FPGA IP User Guide
1. Introduction x
1.1. Supported Features 1.2. Device Family Support 1.3. Release Information 1.4. Resource Utilization 1.5. Getting Started
2. Feature Description x
2.1. Ethernet Subsystem Intel FPGA IP Overview 2.2. Supported Features
3. Ethernet Subsystem Parameters x
3.1. Parameter Editor Parameters 3.2. E-Tile Port Enablement Guidelines and Restrictions 3.3. F-Tile Ethernet Port to PMA Channel Mapping 3.4. Analog Parameter Options
4. Subsystem IP Blocks x
4.1. AXI Stream Bridge 4.2. CSR Address Decoder 4.3. Subsystem Abstraction Layer (SAL) 4.4. Dynamic Reconfiguration Extension Subsystem 4.5. IEEE 1588v2 PTP 4.6. Auto-Negotation and Link Training 4.7. Priority Flow Control
4.3. Subsystem Abstraction Layer (SAL) x
4.3.1. Subsystem Abstraction Layer (SAL) Commands
4.3.1. Subsystem Abstraction Layer (SAL) Commands x
4.3.1.1. NOP(0x0) 4.3.1.2. get_hssi_profile for E-Tile 4.3.1.3. get_hssi_profile for F-Tile 4.3.1.4. set_hssi_profile for E-Tile 4.3.1.5. set_hssi_profile for F-Tile 4.3.1.6. read_MAC_statistic 4.3.1.7. get_mtu 4.3.1.8. set_csr for E-Tile 4.3.1.9. set_csr for F-Tile 4.3.1.10. get_csr for E-Tile 4.3.1.11. get_csr for F-Tile 4.3.1.12. enable_loopback for E-Tile 4.3.1.13. enable_loopback for F-Tile 4.3.1.14. disable_loopback for E-Tile 4.3.1.15. disable_loopback for F-Tile 4.3.1.16. Reset MAC Statistics 4.3.1.17. set_mtu for F-Tile 4.3.1.18. Ncsi_get_link_status 4.3.1.19. Reserved 4.3.1.20. firmware_version (0xFF)
4.5. IEEE 1588v2 PTP x
4.5.1. TX PTP Classifier
5. Interfaces and Signals x
5.1. AXI4 Interfaces 5.2. Serial Interface 5.3. Clocks 5.4. Resets
5.1. AXI4 Interfaces x
5.1.1. AXI-Lite CSR 5.1.2. AXI-ST Client Interface 5.1.3. AXI-ST PHY Direct 5.1.4. AXI-ST PTP 5.1.5. Flow Control
6. Recommended Clock Connections x
6.1. Driving Multiple Ports with the Same Clock 6.2. Clock Connections for MAC Asynchronous Client FIFO 6.3. F-Tile Clock Connections for PTP Synchronous and Asynchronous cases 6.4. Clock Connections for SyncE Operation on E-Tile 6.5. Clock Connections for SyncE Operation on F-Tile 6.6. F-Tile PMA and FEC Direct PHY IP Clock Output
7. Register Descriptions x
7.1. Subsystem Registers 7.2. Port Registers 7.3. F-Tile Address Maps 7.4. F-Tile ANLT Port Register Map 7.5. F-Tile PTP Tile Adapter Register Map 7.6. F-Tile DR Controller Register Map
7.1. Subsystem Registers x
7.1.1. Device Feature Header Lo 7.1.2. Device Feature Header Hi 7.1.3. Feature GUID_L 7.1.4. Feature GUID_H 7.1.5. Feature CSR ADDR 7.1.6. Feature CSR Size Group 7.1.7. Version 7.1.8. Feature List 7.1.9. Interface Attribute Port X Parameters 7.1.10. HSSI Command/Status 7.1.11. HSSI Control/Address 7.1.12. HSSI Read Data 7.1.13. HSSI Write Data 7.1.14. HSSI Ethernet Port X Status 7.1.15. Priority Flow Control 7.1.16. Priority Flow Control TX Queue Statistics 7.1.17. Priority Flow Control RX Queue Statistics 7.1.18. Priority Flow Control TX Queue Threshold 7.1.19. Priority Flow Control RX Queue Threshold 7.1.20. F-Tile DR Controller Status
7.2. Port Registers x
7.2.1. PTP Packet Classifier Registers
7.2.1. PTP Packet Classifier Registers x
7.2.1.1. Recognized and Unrecognized Packet Counters 7.2.1.2. Parse Graph Specific Packet Counters
8. Ethernet SS IP Example Design x
8.1. Steps to Generate the Example Design 8.2. Supported Simulators 8.3. Running the Simulation Tests 8.4. Running the Hardware Tests
8.3. Running the Simulation Tests x
8.3.1. Steps to Simulate the Design Example
8.4. Running the Hardware Tests x
8.4.1. Supported Boards 8.4.2. Steps to Compile the Design Example for Hardware 8.4.3. Steps to Run the Design Example on Hardware
8.4.2. Steps to Compile the Design Example for Hardware x
8.4.2.1. Steps to generate Routing Delay for PTP Enabled Designs
1. Introduction
2. Feature Description
3. Ethernet Subsystem Parameters
4. Subsystem IP Blocks
5. Interfaces and Signals
6. Recommended Clock Connections
7. Register Descriptions
8. Ethernet SS IP Example Design
9. Document Revision History for the Ethernet Subsystem Intel FPGA IP User Guide

4.6. Auto-Negotation and Link Training

E-Tile Auto Negotiation and Link Training

When you enable the AN/LT feature in the IP GUI, the AN/LT logic, which includes the AN/LT CSR and CPU, is instantiated in the E-Tile Ethernet IP.

F-Tile Auto-Negotiation and Link Training

Unlike previous AN/LT blocks, such as Stratix 10 and older, this block is not dependent on the main or base Ethernet IP. That is, the AN/LT block is a distinct and independent IP from the basic Ethernet address. The Ethernet Subsystem IP automatically connects the AN/LT IP to the base Ethernet IP.

The number of AN/LT IP instantiated in the Ethernet Subsystem IP depends on the different Ethernet configurations configured in the Ethernet Subsystem IP. With the same configuration, one AN/LT IP can be connected to multiple Ethernet ports.

AN/LT IP can be enabled with dynamic reconfiguration, and only once instance of the IP is required per dynamic reconfiguration group. When you enable AN/LT IP in the DR group, the AN/LT IP is instantiated and connected to the Ethernet Subsystem Base IP. AXI-Lite provides you the access to control and status monitoring.

The following steps are applicable for AN/LT Dynamic Reconfiguration:
  1. After power on, wait for the auto-negotiation process to complete. The auto-negotiation completion can be monitored using the port X status register bit 29, which is per port register.
  2. Once AN is complete, please check AN results and based on that, you can decide on the dynamic reconfiguration profile (You can skip dynamic reconfiguration if the auto-negotiation results match the startup profile).
  3. Once dynamic reconfiguration is complete, write 1 to the AN/LT configuration register bit 16, 'Continue AN Flow', with address (Offset + 0x314) to unpause the AN/LT IP.
    Note:
    • keep unused ports in reset, as multiport dynamic reconfiguration is not supported. For example, when dynamically reconfiguring form 100G-4 > 25G, keep ports 1,2, and 3 in reset, while port 0 remains active.
    • Before step 3, you must apply a reset before starting dynamic reconfiguration. Once completed, remove the reset. Once completed, remove the reset, but note that the ACK signal does not toggle. (AN/LT applies a reset that remains in place, and AN/LT removes it during LT).
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