Arria V Avalon-ST Interface for PCIe Solutions User Guide

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ID 683733
Date 6/03/2020
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Document Table of Contents
Document Table of Contents x
1. Datasheet 2. Getting Started with the Arria V Hard IP for PCI Express 3. Parameter Settings 4. Interfaces and Signal Descriptions 5. Registers 6. Interrupts 7. Error Handling 8. IP Core Architecture 9. Transaction Layer Protocol (TLP) Details 10. Throughput Optimization 11. Design Implementation 12. Additional Features 13. Hard IP Reconfiguration 14. Transceiver PHY IP Reconfiguration 15. Testbench and Design Example 16. Debugging A. Transaction Layer Packet (TLP) Header Formats B. Lane Initialization and Reversal C. Document Revision History
1. Datasheet x
1.1. Arria V Avalon-ST Interface for PCIe Datasheet 1.2. Features 1.3. Release Information 1.4. Device Family Support 1.5. Configurations 1.6. Example Designs 1.7. Debug Features 1.8. IP Core Verification 1.9. Performance and Resource Utilization 1.10. Recommended Speed Grades 1.11. Creating a Design for PCI Express
1.8. IP Core Verification x
1.8.1. Compatibility Testing Environment
2. Getting Started with the Arria V Hard IP for PCI Express x
2.1. Qsys Design Flow 2.2. Modifying the Example Design 2.3. Using the IP Catalog To Generate Your Arria V Hard IP for PCI Express as a Separate Component
2.1. Qsys Design Flow x
2.1.1. Generating the Testbench 2.1.2. Simulating the Example Design 2.1.3. Generating Synthesis Files 2.1.4. Understanding the Files Generated 2.1.5. Understanding Physical Placement of the PCIe IP Core 2.1.6. Compiling the Design in the Quartus® Prime Software
3. Parameter Settings x
3.1. Avalon-ST System Settings 3.2. Link Capabilities 3.3. Port Function Parameters Shared Across All Port Functions 3.4. Port Function Parameters Defined Separately for All Port Functions
3.3. Port Function Parameters Shared Across All Port Functions x
3.3.1. Device Capabilities 3.3.2. Error Reporting 3.3.3. Link Capabilities 3.3.4. Slot Capabilities 3.3.5. Power Management
3.4. Port Function Parameters Defined Separately for All Port Functions x
3.4.1. Base Address Register (BAR) and Expansion ROM Settings 3.4.2. Base and Limit Registers for Root Ports 3.4.3. Device Identification Registers for Function <n> 3.4.4. Func <n> Device 3.4.5. Func <n> Link 3.4.6. Func <n> MSI and MSI-X Capabilities 3.4.7. Func <n> Legacy Interrupt
4. Interfaces and Signal Descriptions x
4.1. Arria V Hard IP for PCI Express with Avalon-ST Interface to the Application Layer 4.2. Clock Signals 4.3. Reset Signals 4.4. Hard IP Status 4.5. Error Signals 4.6. ECRC Forwarding 4.7. Interrupts for Endpoints 4.8. Interrupts for Root Ports 4.9. Completion Side Band Signals 4.10. Transaction Layer Configuration Space Signals 4.11. LMI Signals 4.12. Power Management Signals 4.13. Physical Layer Interface Signals
4.1. Arria V Hard IP for PCI Express with Avalon-ST Interface to the Application Layer x
4.1.1. Avalon‑ST RX Interface 4.1.2. Avalon-ST TX Interface
4.1.1. Avalon‑ST RX Interface x
4.1.1.1. Avalon-ST RX Component Specific Signals 4.1.1.2. Data Alignment and Timing for the 64‑Bit Avalon® -ST RX Interface 4.1.1.3. Data Alignment and Timing for the 128‑Bit Avalon‑ST RX Interface
4.1.2. Avalon-ST TX Interface x
4.1.2.1. Avalon-ST Packets to PCI Express TLPs 4.1.2.2. Data Alignment and Timing for the 64‑Bit Avalon-ST TX Interface 4.1.2.3. Data Alignment and Timing for the 128‑Bit Avalon‑ST TX Interface 4.1.2.4. Root Port Mode Configuration Requests
4.10. Transaction Layer Configuration Space Signals x
4.10.1. Configuration Space Register Access Timing 4.10.2. Configuration Space Register Access
4.13. Physical Layer Interface Signals x
4.13.1. Transceiver Reconfiguration 4.13.2. Serial Interface Signals 4.13.3. Hard IP Reconfiguration Interface 4.13.4. PIPE Interface Signals 4.13.5. Test Signals
4.13.2. Serial Interface Signals x
4.13.2.1. Physical Layout of Hard IP in Arria V Devices 4.13.2.2. Channel Placement in Arria V Devices
5. Registers x
5.1. Correspondence between Configuration Space Registers and the PCIe Specification 5.2. Type 0 Configuration Space Registers 5.3. Type 1 Configuration Space Registers 5.4. PCI Express Capability Structures 5.5. Intel-Defined VSEC Registers 5.6. CvP Registers 5.7. Uncorrectable Internal Error Mask Register 5.8. Uncorrectable Internal Error Status Register 5.9. Correctable Internal Error Mask Register 5.10. Correctable Internal Error Status Register
6. Interrupts x
6.1. Interrupts for Endpoints 6.2. Interrupts for Root Ports
6.1. Interrupts for Endpoints x
6.1.1. MSI Interrupts 6.1.2. MSI-X 6.1.3. Implementing MSI-X Interrupts
6.1.3. Implementing MSI-X Interrupts x
6.1.3.1. Legacy Interrupts
6.1.3.1. Legacy Interrupts x
6.1.3.1.1. Enabling MSI or Legacy Interrupts
7. Error Handling x
7.1. Physical Layer Errors 7.2. Data Link Layer Errors 7.3. Transaction Layer Errors 7.4. Error Reporting and Data Poisoning 7.5. Uncorrectable and Correctable Error Status Bits
8. IP Core Architecture x
8.1. Top-Level Interfaces 8.2. Transaction Layer 8.3. Data Link Layer 8.4. Physical Layer 8.5. Multi-Function Support
8.1. Top-Level Interfaces x
8.1.1. Avalon-ST Interface 8.1.2. Clocks and Reset 8.1.3. Local Management Interface (LMI Interface) 8.1.4. Hard IP Reconfiguration 8.1.5. Transceiver Reconfiguration 8.1.6. Interrupts 8.1.7. PIPE
8.2. Transaction Layer x
8.2.1. Configuration Space
9. Transaction Layer Protocol (TLP) Details x
9.1. Supported Message Types 9.2. Transaction Layer Routing Rules 9.3. Receive Buffer Reordering
9.1. Supported Message Types x
9.1.1. INTX Messages 9.1.2. Power Management Messages 9.1.3. Error Signaling Messages 9.1.4. Locked Transaction Message 9.1.5. Slot Power Limit Message 9.1.6. Vendor-Defined Messages 9.1.7. Hot Plug Messages
9.3. Receive Buffer Reordering x
9.3.1. Using Relaxed Ordering
10. Throughput Optimization x
10.1. Throughput of Posted Writes 10.2. Throughput of Non-Posted Reads
11. Design Implementation x
11.1. Making Analog QSF Assignments Using the Assignment Editor 11.2. Making Pin Assignments 11.3. Recommended Reset Sequence to Avoid Link Training Issues
12. Additional Features x
12.1. Configuration over Protocol (CvP) 12.2. Autonomous Mode 12.3. ECRC
12.2. Autonomous Mode x
12.2.1. Enabling Autonomous Mode 12.2.2. Enabling CvP Initialization
12.3. ECRC x
12.3.1. ECRC on the RX Path 12.3.2. ECRC on the TX Path
14. Transceiver PHY IP Reconfiguration x
14.1. Connecting the Transceiver Reconfiguration Controller IP Core 14.2. Transceiver Reconfiguration Controller Connectivity for Designs Using CvP
15. Testbench and Design Example x
15.1. Endpoint Testbench 15.2. Root Port Testbench 15.3. Test Driver Module 15.4. Root Port Design Example 15.5. Root Port BFM Overview 15.6. BFM Procedures and Functions 15.7. Setting Up Simulation
15.1. Endpoint Testbench x
15.1.1. Endpoint Testbench for SR-IOV
15.5. Root Port BFM Overview x
15.5.1. BFM Memory Map 15.5.2. Configuration Space Bus and Device Numbering 15.5.3. Configuration of Root Port and Endpoint 15.5.4. Issuing Read and Write Transactions to the Application Layer
15.6. BFM Procedures and Functions x
15.6.1. ebfm_barwr Procedure 15.6.2. ebfm_barwr_imm Procedure 15.6.3. ebfm_barrd_wait Procedure 15.6.4. ebfm_barrd_nowt Procedure 15.6.5. ebfm_cfgwr_imm_wait Procedure 15.6.6. ebfm_cfgwr_imm_nowt Procedure 15.6.7. ebfm_cfgrd_wait Procedure 15.6.8. ebfm_cfgrd_nowt Procedure 15.6.9. BFM Configuration Procedures 15.6.10. BFM Shared Memory Access Procedures 15.6.11. BFM Log and Message Procedures 15.6.12. Verilog HDL Formatting Functions
15.6.9. BFM Configuration Procedures x
15.6.9.1. ebfm_cfg_rp_ep Procedure 15.6.9.2. ebfm_cfg_decode_bar Procedure
15.6.10. BFM Shared Memory Access Procedures x
15.6.10.1. Shared Memory Constants 15.6.10.2. shmem_write Task 15.6.10.3. shmem_read Function 15.6.10.4. shmem_display Verilog HDL Function 15.6.10.5. shmem_fill Procedure 15.6.10.6. shmem_chk_ok Function
15.6.11. BFM Log and Message Procedures x
15.6.11.1. ebfm_display Verilog HDL Function 15.6.11.2. ebfm_log_stop_sim Verilog HDL Function 15.6.11.3. ebfm_log_set_suppressed_msg_mask Task 15.6.11.4. ebfm_log_set_stop_on_msg_mask Verilog HDL Task 15.6.11.5. ebfm_log_open Verilog HDL Function 15.6.11.6. ebfm_log_close Verilog HDL Function
15.6.12. Verilog HDL Formatting Functions x
15.6.12.1. himage1 15.6.12.2. himage2 15.6.12.3. himage4 15.6.12.4. himage8 15.6.12.5. himage16 15.6.12.6. dimage1 15.6.12.7. dimage2 15.6.12.8. dimage3 15.6.12.9. dimage4 15.6.12.10. dimage5 15.6.12.11. dimage6 15.6.12.12. dimage7
15.7. Setting Up Simulation x
15.7.1. Changing Between Serial and PIPE Simulation 15.7.2. Using the PIPE Interface for Gen1 and Gen2 Variants 15.7.3. Viewing the Important PIPE Interface Signals 15.7.4. Disabling the Scrambler for Gen1 and Gen2 Simulations 15.7.5. Disabling 8B/10B Encoding and Decoding for Gen1 and Gen2 Simulations 15.7.6. Changing between the Hard and Soft Reset Controller
16. Debugging x
16.1. Hardware Bring-Up Issues 16.2. Link Training 16.3. Use Third-Party PCIe Analyzer 16.4. BIOS Enumeration Issues
16.2. Link Training x
16.2.1. Link Hangs in L0 State
A. Transaction Layer Packet (TLP) Header Formats x
A.1. TLP Packet Formats without Data Payload A.2. TLP Packet Formats with Data Payload
C. Document Revision History x
C.1. Document Revision History of the Arria V Avalon® Streaming (Avalon-ST) Interface for PCIe* Solutions User Guide
1. Datasheet
2. Getting Started with the Arria V Hard IP for PCI Express
3. Parameter Settings
4. Interfaces and Signal Descriptions
5. Registers
6. Interrupts
7. Error Handling
8. IP Core Architecture
9. Transaction Layer Protocol (TLP) Details
10. Throughput Optimization
11. Design Implementation
12. Additional Features
13. Hard IP Reconfiguration
14. Transceiver PHY IP Reconfiguration
15. Testbench and Design Example
16. Debugging
A. Transaction Layer Packet (TLP) Header Formats
B. Lane Initialization and Reversal
C. Document Revision History

4.1.1.1. Avalon-ST RX Component Specific Signals

Table 24.   Avalon-ST RX Component Specific Signals

Signal

Direction

Description

rx_st_mask Input

The Application Layer asserts this signal to tell the Hard IP to stop sending non-posted requests. This signal can be asserted at any time. The total number of non‑posted requests that can be transferred to the Application Layer after rx_st_mask is asserted is not more than 10.

This signal stalls only non-posted TLPs. All others continue to be forwarded to the Application Layer. The stalled non-posted TLPs are held in the RX buffer until the mask signal is deasserted. They are not be discarded. If used in a Root Port mode, asserting the rx_st_mask signal stops all I/O and MemRd and configuration accesses because these are all non-posted transactions.

rx_st_bar[7:0]

Output

The decoded BAR bits for the TLP. Valid for MRd, MWr, IOWR, and IORD TLPs. Ignored for the completion or message TLPs. Valid during the cycle in which rx_st_sop is asserted.

Refer to 64-Bit Avalon-ST rx_st_data<n> Cycle Definitions for 4-Dword Header TLPs with Non-Qword Addresses and 128-Bit Avalon-ST rx_st_data<n> Cycle Definition for 3-Dword Header TLPs with Qword Aligned Addresses for the timing of this signal for 64- and 128-bit data, respectively.

The following encodings are defined for Endpoints:

  • Bit 0: BAR 0
  • Bit 1: BAR 1
  • Bit 2: BAR 2
  • Bit 3: BAR 3
  • Bit 4: BAR 4
  • Bit 5: BAR 5
  • Bit 6: Expansion ROM
  • Bit 7: Reserved

The following encodings are defined for Root Ports:

  • Bit 0: BAR 0
  • Bit 1: BAR 1
  • Bit 2: Primary Bus number
  • Bit 3: Secondary Bus number
  • Bit 4: Secondary Bus number to Subordinate Bus number window
  • Bit 5: I/O window
  • Bit 6: Non-Prefetchable window
  • Bit 7: Prefetchable window

For multiple packets per cycle, this signal is undefined. If you turn on Enable multiple packets per cycle, do not use this signal to identify the address BAR hit.

rx_st_be[<n>-1:0]

Output

Byte enables corresponding to the rx_st_data. The byte enable signals only apply to PCI Express Memory Write and I/O Write TLP payload fields. When using 64-bit Avalon-ST bus, the width of rx_st_be is 8 bits. When using 128-bit Avalon-ST bus, the width of rx_st_be is 16 bits. This signal is optional. You can derive the same information by decoding the FBE and LBE fields in the TLP header. The byte enable bits correspond to data bytes as follows:

  • rx_st_data[127:120] = rx_st_be[15]
  • rx_st_data[119:112] = rx_st_be[14]
  • rx_st_data[111:104] = rx_st_be[13]
  • rx_st_data[95:88] = rx_st_be[12]
  • rx_st_data[87:80] = rx_st_be[11]
  • rx_st_data[79:72] = rx_st_be[10]
  • rx_st_data[71:64]  = rx_st_be[9]
  • rx_st_data[7:0]    =  rx_st_be[8]
  • rx_st_data[63:56] = rx_st_be[7]
  • rx_st_data[55:48] = rx_st_be[6]
  • rx_st_data[47:40] = rx_st_be[5]
  • rx_st_data[39:32] = rx_st_be[4]
  • rx_st_data[31:24] = rx_st_be[3]
  • rx_st_data[23:16] = rx_st_be[2]
  • rx_st_data[15:8]  = rx_st_be[1]
  • rx_st_data[7:0]    =  rx_st_be[0]

This signal is deprecated.

rx_st_parity[<n>-1:0]

Output

The IP core generates byte parity when you turn on Enable byte parity ports on Avalon-ST interface on the System Settings tab of the parameter editor. Each bit represents odd parity of the associated byte of the rx_st_datarx_st_data bus. For example, bit[0] corresponds to rx_st_data[7:0] rx_st_data[7:0], bit[1] corresponds to rx_st_data[15:8].
rx_bar_dec_func_num[2:0]

Output

Specifies which function the rx_st_bar signal applies to.

For more information about the Avalon-ST protocol, refer to the Avalon Interface Specifications.

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