Stratix V Avalon-MM Interface for PCIe Solutions: User Guide

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ID 683411
Date 5/21/2017
Public
Document Table of Contents
Document Table of Contents x
1. Datasheet 2. Getting Started with the Avalon-MM Design Example 3. Parameter Settings 4. 64- or 128-Bit Avalon-MM Interface to the Endpoint Application Layer 5. Registers 6. Interrupts for Endpoints 7. Error Handling A. PCI Express Protocol Stack 8. Transceiver PHY IP Reconfiguration 9. Throughput Optimization 10. Design Implementation 11. Additional Features 12. Debugging B. Frequently Asked Questions for PCI Express C. Lane Initialization and Reversal D. Document Revision History
1. Datasheet x
1.1. Stratix V Avalon-MM Interface for PCIe Datasheet 1.2. Features 1.3. Release Information 1.4. Device Family Support 1.5. Configurations 1.6. Design Examples 1.7. IP Core Verification 1.8. Resource Utilization 1.9. Recommended Speed Grades 1.10. Creating a Design for PCI Express
1.7. IP Core Verification x
1.7.1. Compatibility Testing Environment
2. Getting Started with the Avalon-MM Design Example x
2.1. Running Qsys 2.2. Generating the Example Design 2.3. Understanding Simulation Log File Generation 2.4. Running a Gate-Level Simulation 2.5. Simulating the Single DWord Design 2.6. Generating Synthesis Files 2.7. Creating a Quartus® Prime Project 2.8. Compiling the Design 2.9. Programming a Device 2.10. Understanding Channel Placement Guidelines
3. Parameter Settings x
3.1. System Settings 3.2. Base Address Register (BAR) Settings 3.3. Device Identification Registers 3.4. PCI Express and PCI Capabilities Parameters 3.5. Avalon Memory‑Mapped System Settings
3.4. PCI Express and PCI Capabilities Parameters x
3.4.1. Device Capabilities 3.4.2. Error Reporting 3.4.3. Link Capabilities 3.4.4. MSI and MSI-X Capabilities 3.4.5. Power Management
4. 64- or 128-Bit Avalon-MM Interface to the Endpoint Application Layer x
4.1. 32-Bit Non-Bursting Avalon-MM Control Register Access (CRA) Slave Signals 4.2. Bursting and Non-Bursting Avalon® -MM Module Signals 4.3. 64- or 128-Bit Bursting TX Avalon-MM Slave Signals 4.4. Clock Signals 4.5. Reset 4.6. Interrupts for Endpoints when Multiple MSI/MSI-X Support Is Enabled 4.7. Hard IP Status Signals 4.8. Physical Layer Interface Signals
4.7. Hard IP Status Signals x
4.7.1. Hard IP Reconfiguration Interface
4.8. Physical Layer Interface Signals x
4.8.1. Hard IP Status Extension 4.8.2. Serial Data Signals 4.8.3. PIPE Interface Signals 4.8.4. Test Signals
4.8.2. Serial Data Signals x
4.8.2.1. Physical Layout of Hard IP in Stratix V GX/GT/GS Devices 4.8.2.2. Channel Placement in Arria V GZ and Stratix V GX/GT/GS 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. 64- or 128-Bit Avalon-MM Bridge Register Descriptions 5.8. Programming Model for Avalon-MM Root Port 5.9. Uncorrectable Internal Error Mask Register 5.10. Uncorrectable Internal Error Status Register 5.11. Correctable Internal Error Mask Register 5.12. Correctable Internal Error Status Register
5.7. 64- or 128-Bit Avalon-MM Bridge Register Descriptions x
5.7.1. Avalon-MM to PCI Express Interrupt Registers
5.7.1. Avalon-MM to PCI Express Interrupt Registers x
5.7.1.1. Avalon-MM to PCI Express Interrupt Status Registers 5.7.1.2. Avalon-MM to PCI Express Interrupt Enable Registers 5.7.1.3. PCI Express Mailbox Registers 5.7.1.4. Avalon-MM-to-PCI Express Address Translation Table 5.7.1.5. PCI Express to Avalon-MM Interrupt Status and Enable Registers for Endpoints 5.7.1.6. Avalon-MM Mailbox Registers 5.7.1.7. Control Register Access (CRA) Avalon-MM Slave Port
5.8. Programming Model for Avalon-MM Root Port x
5.8.1. Sending a Write TLP 5.8.2. Sending a Read TLP or Receiving a Non-Posted Completion TLP 5.8.3. Examples of Reading and Writing BAR0 Using the CRA Interface 5.8.4. PCI Express to Avalon-MM Interrupt Status and Enable Registers for Root Ports 5.8.5. Root Port TLP Data Registers
6. Interrupts for Endpoints x
6.1. Enabling MSI or Legacy Interrupts 6.2. Generation of Avalon-MM Interrupts 6.3. Interrupts for Endpoints Using the Avalon-MM Interface with Multiple MSI/MSI-X Support
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
A. PCI Express Protocol Stack x
A.1. Top-Level Interfaces A.2. Data Link Layer A.3. Physical Layer A.4. 32-Bit PCI Express Avalon-MM Bridge A.5. Completer Only Single Dword Endpoint
A.1. Top-Level Interfaces x
A.1.1. Avalon-MM Interface A.1.2. Clocks and Reset A.1.3. Transceiver Reconfiguration A.1.4. Interrupts A.1.5. PIPE
A.4. 32-Bit PCI Express Avalon-MM Bridge x
A.4.1. Avalon‑MM Bridge TLPs A.4.2. Avalon-MM-to-PCI Express Write Requests A.4.3. Avalon-MM-to-PCI Express Upstream Read Requests A.4.4. PCI Express-to-Avalon-MM Read Completions A.4.5. PCI Express-to-Avalon-MM Downstream Write Requests A.4.6. PCI Express-to-Avalon-MM Downstream Read Requests A.4.7. Avalon-MM-to-PCI Express Read Completions A.4.8. PCI Express-to-Avalon-MM Address Translation for 32-Bit Bridge A.4.9. Minimizing BAR Sizes and the PCIe Address Space A.4.10. Avalon® -MM-to-PCI Express Address Translation Algorithm for 32-Bit Addressing
A.5. Completer Only Single Dword Endpoint x
A.5.1. RX Block A.5.2. Avalon-MM RX Master Block A.5.3. TX Block A.5.4. Interrupt Handler Block
8. Transceiver PHY IP Reconfiguration x
8.1. Connecting the Transceiver Reconfiguration Controller IP Core 8.2. Transceiver Reconfiguration Controller Connectivity for Designs Using CvP
9. Throughput Optimization x
9.1. Throughput of Posted Writes 9.2. Throughput of Non-Posted Reads
10. Design Implementation x
10.1. Making Analog QSF Assignments Using the Assignment Editor 10.2. Making Pin Assignments to Assign I/O Standard to Serial Data Pins 10.3. Recommended Reset Sequence to Avoid Link Training Issues 10.4. SDC Timing Constraints
11. Additional Features x
11.1. Configuration over Protocol (CvP) 11.2. Autonomous Mode 11.3. ECRC
11.2. Autonomous Mode x
11.2.1. Enabling Autonomous Mode 11.2.2. Enabling CvP Initialization
11.3. ECRC x
11.3.1. ECRC on the RX Path 11.3.2. ECRC on the TX Path
12. Debugging x
12.1. Hardware Bring-Up Issues 12.2. Link Training 12.3. Use Third-Party PCIe Analyzer 12.4. BIOS Enumeration Issues
12.2. Link Training x
12.2.1. Debugging Link that Fails To Reach L0
D. Document Revision History x
D.1. Cyclone® V Avalon® Memory Mapped (Avalon-MM) Interface for PCIe* Solutions User Guide Revision History
1. Datasheet
2. Getting Started with the Avalon-MM Design Example
3. Parameter Settings
4. 64- or 128-Bit Avalon-MM Interface to the Endpoint Application Layer
5. Registers
6. Interrupts for Endpoints
7. Error Handling
A. PCI Express Protocol Stack
8. Transceiver PHY IP Reconfiguration
9. Throughput Optimization
10. Design Implementation
11. Additional Features
12. Debugging
B. Frequently Asked Questions for PCI Express
C. Lane Initialization and Reversal
D. Document Revision History

5.8.1. Sending a Write TLP

The Application Layer performs the following sequence of Avalon-MM accesses to the CRA slave port to send a Memory Write Request:

  1. Write the first 32 bits of the TX TLP to RP_TX_REG0 at address 0x2000.
  2. Write the next 32 bits of the TX TLP to RP_TX_REG1 at address 0x2004.
  3. Write the RP_TX_CNTRL.SOP to 1’b1 (RP_TX_CNTRL is at address 0x2008) to push the first two dwords of the TLP into the Root Port TX FIFO.
  4. Repeat Steps 1 and 2. The second write to RP_TX_REG1 is required, even for three dword TLPs with aligned data.
  5. If the packet is complete, write RP_TX_CNTRL to 2’b10 to indicate the end of the packet. If the packet is not complete, write 2’b00 to RP_TX_CNTRL.
  6. Repeat this sequence to program a complete TLP.

When the programming of the TX TLP is complete, the Avalon® -MM bridge schedules the TLP with higher priority than TX TLPs coming from the TX slave port.

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