Arria® V Avalon® Memory-Mapped (Avalon-MM) Interface for PCI Express* Solutions: User Guide

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ID 683773
Date 10/25/2024
Public
Document Table of Contents
Document Table of Contents x
1. Datasheet 2. Getting Started with the Avalon-MM Arria V Hard IP for PCI Express 3. Parameter Settings 4. Interfaces and Signal Descriptions 5. Registers 6. Reset and Clocks 7. Interrupts for Endpoints 8. Error Handling A. PCI Express Protocol Stack 9. Design Implementation 10. Additional Features 11. Transceiver PHY IP Reconfiguration 12. Debugging B. Frequently Asked Questions for PCI Express C. Lane Initialization and Reversal D. Document Revision History
1. Datasheet x
1.1. Avalon-MM 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. IP Core Verification 1.8. Performance and 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 Arria V Hard IP for PCI Express x
2.1. Running Platform Designer 2.2. Generating the Example Design 2.3. Running a Gate-Level Simulation 2.4. Simulating the Single DWord Design 2.5. Understanding Channel Placement Guidelines 2.6. Generating Synthesis Files 2.7. Compiling the Design in the Quartus® Prime Software 2.8. Programming a Device
3. Parameter Settings x
3.1. Avalon-MM System Settings 3.2. Base Address Register (BAR) Settings 3.3. Device Identification Registers 3.4. Device Capabilities 3.5. Error Reporting 3.6. Link Capabilities 3.7. MSI and MSI-X Capabilities 3.8. Power Management 3.9. Avalon Memory‑Mapped System Settings
4. Interfaces and Signal Descriptions x
4.1. 64- or 128-Bit Avalon-MM Interface to the Endpoint Application Layer 4.2. Clock Signals 4.3. Reset Signals 4.4. Hard IP Status 4.5. Interrupts for Endpoints when Multiple MSI/MSI-X Support Is Enabled 4.6. Physical Layer Interface Signals
4.1. 64- or 128-Bit Avalon-MM Interface to the Endpoint Application Layer x
4.1.1. 32-Bit Non-Bursting Avalon-MM Control Register Access (CRA) Slave Signals 4.1.2. Bursting and Non-Bursting Avalon® -MM Module Signals 4.1.3. 64- or 128-Bit Bursting TX Avalon-MM Slave Signals
4.6. Physical Layer Interface Signals x
4.6.1. Transceiver Reconfiguration 4.6.2. Hard IP Status Extension 4.6.3. Serial Interface Signals 4.6.4. PIPE Interface Signals 4.6.5. Test Signals
4.6.2. Hard IP Status Extension x
4.6.2.1. Configuration Space Register Access 4.6.2.2. Configuration Space Register Access Timing
4.6.3. Serial Interface Signals x
4.6.3.1. Physical Layout of Hard IP in Arria V Devices 4.6.3.2. 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. 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. Reset and Clocks x
6.1. Reset Sequence for Hard IP for PCI Express IP Core and Application Layer 6.2. Clocks
6.2. Clocks x
6.2.1. Clock Domains 6.2.2. Clock Summary
6.2.1. Clock Domains x
6.2.1.1. pclk 6.2.1.2. coreclkout_hip 6.2.1.3. pld_clk
7. Interrupts for Endpoints x
7.1. Enabling MSI or Legacy Interrupts 7.2. Generation of Avalon-MM Interrupts 7.3. Interrupts for Endpoints Using the Avalon-MM Interface with Multiple MSI/MSI-X Support
8. Error Handling x
8.1. Physical Layer Errors 8.2. Data Link Layer Errors 8.3. Transaction Layer Errors 8.4. Error Reporting and Data Poisoning 8.5. 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
9. Design Implementation x
9.1. Making Analog QSF Assignments Using the Assignment Editor 9.2. Making Pin Assignments 9.3. Recommended Reset Sequence to Avoid Link Training Issues
10. Additional Features x
10.1. Configuration over Protocol (CvP) 10.2. Autonomous Mode 10.3. ECRC
10.2. Autonomous Mode x
10.2.1. Enabling Autonomous Mode 10.2.2. Enabling CvP Initialization
10.3. ECRC x
10.3.1. ECRC on the RX Path 10.3.2. ECRC on the TX Path
11. Transceiver PHY IP Reconfiguration x
11.1. Connecting the Transceiver Reconfiguration Controller IP Core 11.2. Transceiver Reconfiguration Controller Connectivity for Designs Using CvP
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
D. Document Revision History x
D.1. Arria® V and Cyclone® V Avalon® Memory Mapped (Avalon-MM) Interface for PCIe* Solutions User Guide Revision History
1. Datasheet
2. Getting Started with the Avalon-MM Arria V Hard IP for PCI Express
3. Parameter Settings
4. Interfaces and Signal Descriptions
5. Registers
6. Reset and Clocks
7. Interrupts for Endpoints
8. Error Handling
A. PCI Express Protocol Stack
9. Design Implementation
10. Additional Features
11. Transceiver PHY IP Reconfiguration
12. Debugging
B. Frequently Asked Questions for PCI Express
C. Lane Initialization and Reversal
D. Document Revision History

5.7. 64- or 128-Bit Avalon-MM Bridge Register Descriptions

The CRA Avalon-MM slave module provides access control and status registers in the PCI Express Avalon-MM bridge. In addition, it provides access to selected Configuration Space registers and link status registers in read-only mode. This module is optional. However, you must include it to access the registers.

The control and status register address space is 16 KB. Each 4 KB sub-region contains a set of functions, which may be specific to accesses from the PCI Express Root Complex only, from Avalon‑MM processors only, or from both types of processors. Because all accesses come across the interconnect fabric—requests from the Avalon‑MM Arria V Hard IP for PCI Express are routed through the interconnect fabric—hardware does not enforce restrictions to limit individual processor access to specific regions. However, the regions are designed to enable straight-forward enforcement by processor software. The following figure illustrates accesses to the Avalon‑MM control and status registers from the Host CPU and PCI Express link.

Figure 23. Accesses to the Avalon-MM Bridge Control and Status Register

The following table describes the four subregions.

Table 45.  Avalon-MM Control and Status Register Address Spaces

Address Range

Address Space Usage

0x0000-0x0FFF

Registers typically intended for access by PCI Express link partner only. This includes PCI Express interrupt enable controls, write access to the PCI Express Avalon-MM bridge mailbox registers, and read access to Avalon-MM-to-PCI Express mailbox registers.

0x1000-0x1FFF

Avalon-MM-to-PCI Express address translation tables. Depending on the system design these may be accessed by the PCI Express link partner, Avalon-MM processors, or both.

0x2000-0x2FFF

Root Port request registers. An embedded processor, such as the Nios II processor, programs these registers to send the data for Configuration TLPs, I/O TLPs, single dword Memory Read and Write requests, and receive interrupts from an Endpoint.

0x3000-0x3FFF

Registers typically intended for access by Avalon-MM processors only. Provides host access to selected Configuration Space and status registers.

Note: The data returned for a read issued to any undefined address in this range is unpredictable.

The following table lists the complete address map for the PCI Express Avalon-MM bridge registers.

Note: In the following table the text in green are links to the detailed register description
Table 46.  PCI Express Avalon-MM Bridge Register Map

Address Range

Register

0x0040

Avalon-MM to PCI Express Interrupt Status Register

0x0050

Avalon-MM to PCI Express Interrupt Status Enable Register

0x0800–0x081F

PCI Express-to-Avalon-MM Mailbox Registers

0x0900–x091F

Avalon-MM to PCI Express Mailbox Registers

0x1000–0x1FFF

Avalon-MM to PCI Express Address Translation Table

0x2000–0x2FFF

Root Port TLP Data Registers

0x3060

Avalon-MM to PCI Express Interrupt Status Registers for Root Ports

0x3060

PCI Express to Avalon-MM Interrupt Status Register for Endpoints

0x3070

INT-X Interrupt Enable Register for Root Ports

0x3070

INT-X Interrupt Enable Register for Endpoints

0x3A00-0x3A1F

Avalon-MM to PCI Express Mailbox Registers

0x3B00-0x3B1F

PCI Express to Avalon-MM Mailbox Registers

0x3C00-0x3C6C

Host (Avalon-MM master) access to selected Configuration Space and status registers.

Section Content
Avalon-MM to PCI Express Interrupt Registers

Level Two Title