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

7.1.15. Priority Flow Control

Description: PFC Control parameters

Byte Offset: 0x4000 + 0x200 x (0 - 19)

Addressing Mode: 32 bits

Bit Type Reset Description
31:5 RO 0 Reserved
5 RW 0 1'b0 – Normal

1'b1 – Clear RX packet statistics
4 RW 0 1'b0 – Normal

1'b1 – Clear TX packet statistics
3 RW FLOW_CONTROL_EN cfg_flow_control_en: Enable Flow Control

1'b1 – Flow control enabled (PFC or PAUSE – determined by CFG_PFC_SEL)

1'b0 – Flow control disabled, no PFC or PAUSE generation

A switch may cause packet dropping or mixing for a brief time (Maximum of number of queue entries * 8 cycles).
  • After power on, value is set to 1
  • After subsytem_cold_reset_n, the value is set based on the module parameter PORT<X>_FLOW_CONTROL_EN
2 RW 0 cfg_pfc_sel: Select between Priority Flow control vs Standard Flow Control (Pause), valid only when CFG_FLOW_CONTROL_EN is set to 1’b1.

1’b1 – PFC is enabled. tx_pfc[7:0] is generated, rx_pfc[7:0] is consumed

1’b0 – SFC is enabled. tx_pause is generated, rx_pause is consumed

A switch may cause packet dropping or mixing for a brief time (Maximum of number of queue entries * 8 cycles).
1 RW 0

Indicate PFC RX queue arbiration scheme.

1’b1 – Priority arbitration priority order (queue 7 - queue 0)

1’b0 – Round-robin arbitration
0 RW 0

Indicate PFC TX queue arbiration scheme.

1’b1 – Priority arbitration priority order (queue 7 - queue 0)

1’b0 – Round-robin arbitration
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