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Shell Developer Guide for Open FPGA Stack: Agilex® 7 FPGA F-Series Development Kit (2x F-Tile) PCIe Attach

Last updated: July 01, 2024

1. Introduction

1.1. About This Document

This document serves as a guide for OFS Agilex PCIe Attach developers targeting the Agilex® 7 FPGA F-Series Development Kit (2x F-Tile). The following topics are covered in this guide:

  • Compiling the OFS Agilex PCIe Attach FIM design
  • Simulating the OFS Agilex PCIe Attach design
  • Customizing the OFS Agilex PCIe Attach FIM design
  • Configuring the FPGA with an OFS Agilex PCIe Attach FIM design

The FIM Development Walkthroughs Table lists all of the walkthroughs provided in this guide. These walkthroughs provide step-by-step instructions for performing different FIM Development tasks.

Table: FIM Development Walkthroughs

Walkthrough Name Category
Install Quartus Prime Pro Software Setup
Clone FIM Repository Setup
Set Development Environment Variables Setup
Set Up Development Environment Setup
Compile OFS FIM Compilation
Manually Generate OFS Out-Of-Tree PR FIM Compilation
Change the Compilation Seed Compilation
Run Individual Unit Level Simulation Simulation
Run Regression Unit Level Simulation Simulation
Add a new module to the OFS FIM Customization
Modify and run unit tests for a FIM that has a new module Customization
Hardware test a FIM that has a new module Customization
Debug the FIM with Signal Tap Customization
Compile the FIM in preparation for designing your AFU Customization
Resize the Partial Reconfiguration Region Customization
Modify PCIe Configuration Using OFSS Customization
Modify PCIe Configuration Using IP Presets Customization
Create a Minimal FIM Customization
Migrate to a Different Agilex Device Number Customization
Modify the Ethernet Sub-System to 2x4x10GbE Customization
Modify the Ethernet Sub-System to 3x4x10GbE Customization
Remove the HPS Customization
Set up JTAG Configuration
Program the FPGA via JTAG Configuration

1.1.1 Knowledge Pre-Requisites

It is recommended that you have the following knowledge and skills before using this developer guide.

  • Basic understanding of OFS and the difference between OFS designs. Refer to the OFS Welcome Page.
  • Review the release notes for the Agilex 7 PCIe Attach Reference Shells, with careful consideration of the Known Issues.
  • Review of Getting Started Guide: OFS for Agilex® 7 PCIe Attach FPGAs (F-Series Development Kit (2xF-Tile)).
  • FPGA compilation flows using Quartus® Prime Pro Edition.
  • Static Timing closure, including familiarity with the Timing Analyzer tool in Quartus® Prime Pro Edition, applying timing constraints, Synopsys* Design Constraints (.sdc) language and Tcl scripting, and design methods to close on timing critical paths.
  • RTL (System Verilog) and coding practices to create synthesized logic.
  • RTL simulation tools.
  • Quartus® Prime Pro Edition Signal Tap Logic Analyzer tool software.

1.2. FIM Development Theory

This section will help you understand how the OFS Agilex PCIe Attach FIM can be developed to fit your design goals.

The Default FIM Features section provides general information about the default features of the OFS Agilex PCIe Attach FIM so you can become familiar with the default design. For more detailed information about the FIM architecture, refer to the Shell Technical Reference Manual: OFS for Agilex® 7 PCIe Attach FPGAs.

The Customization Options section then gives suggestions of how this default design can be customized. Step-by-step walkthroughs for many of the suggested customizations are later described in the FIM Customization section.

FIM development for a new acceleration card generally consists of the following steps:

  1. Install OFS and familiarize yourself with provided scripts and source code
  2. Develop high level design with your specific functionality
    1. Determine requirements and key performance metrics
    2. Select IP cores
    3. Select FPGA device
    4. Develop software memory map
  3. Select and implement FIM Physical interfaces including:
    1. External clock sources and creation of internal PLL clocks
    2. General I/O
    3. Ethernet modules
    4. External memories
    5. FPGA programming methodology
  4. Develop device physical implementation
    1. FPGA device pin assignment
    2. Create logic lock regions
    3. Create of timing constraints
    4. Create Quartus Prime Pro FIM test project and validate:
      1. Placement
      2. Timing constraints
      3. Build script process
      4. Review test FIM FPGA resource usage
  5. Select FIM to AFU interfaces and development of PIM
  6. Implement FIM design
    1. Develop RTL
    2. Instantiate IPs
    3. Develop test AFU to validate FIM
    4. Develop unit and device level simulation
    5. Develop timing constraints and build scripts
    6. Perform timing closure and build validation
  7. Create FIM documentation to support AFU development and synthesis
  8. Software Device Feature discovery
  9. Integrate, validate, and debug hardware/software
  10. Prepare for high volume production

1.2.1 Default FIM Features

1.2.1.1 Top Level

Figure: OFS Agilex PCIe Attach fseries-dk FIM Top-Level Diagram

top_level_diagram

1.2.1.2 Interfaces

The key interfaces in the OFS Agilex PCIe Attach design are listed in the Release Capabilities Table. It describes the capabilities of the fseries-dk hardware as well as the capabilities of the default OFS Agilex PCIe Attach design targeting the fseries-dk.

Table: Release Capabilities

Interface fseries-dk Hardware Capabilities OFS Agilex PCIe Attach Default Design Implementation
Host Interface[1] PCIe Gen4x8 PCIe Gen4x16
Network Interface 1 QSFP-56 cage
1 QSFPDD-56 Cage		 2x4x25GbE
External Memory 3xDDR4 DIMMs sockets - 72-bits (1 available for HPS) 2xDDR4 - 2400MHz - 8Gb (1Gbx8) - 64-bits - No ECC
1xDDR4 - 2400MHz - 16Gb (2Gbx8) - 40-bits - With ECC - For HPS

[1] F-Tile ES version development kit has a form factor of PCIe Gen4x16, however it only supports PCIe Gen4x8. The OFS Agilex PCIe Attach design implements PCIe Gen4x16 with the assumption that it will train down to PCIe Gen4x8.

1.2.1.3 Subsystems

The FIM Subsystems Table describes the Platform Designer IP subsystems used in the OFS Agilex PCIe Attach fseries-dk FIM.

Table: FIM Subsystems

Subsystem User Guide Document ID
PCIe Subsystem PCIe Subsystem Intel FPGA IP User Guide for Intel Agilex OFS N/A
Memory Subsystem Memory Subsystem Intel FPGA IP User Guide for Intel Agilex OFS 686148[1]
Ethernet Subsystem Ethernet Subsystem Intel FPGA IP User Guide 773413[1]

[1] You must request entitled access to these documents.

1.2.1.4 Host Exercisers

The default AFU workload in the OFS Agilex PCIe Attach fseries-dk FIM contains several modules called Host Exercisers which are used to exercise the interfaces on the board. The Host Exerciser Descriptions Table describes these modules.

Table: Host Exerciser Descriptions

Name Acronym Description OPAE Command
Host Exerciser Loopback HE-LB Used to exercise and characterize host to FPGA data transfer. host_exerciser
Host Exerciser Memory HE_MEM Used to exercise and characterize host to Memory data transfer. host_exerciser
Host Exerciser Memory Traffic Generator HE_MEM_TG Used to exercise and test available memory channels with a configurable traffic pattern. mem_tg
Host Exerciser High Speed Serial Interface HE-HSSI Used to exercise and characterize HSSI interfaces. hssi

The host exercisers can be removed from the design at compile-time using command line arguments for the build script.

1.2.1.5 Module Access via APF/BPF

The OFS Agilex PCIe Attach fseries-dk FIM uses AXI4-Lite interconnect logic named the AFU Peripheral Fabric (APF) and Board Peripheral Fabric (BPF) to access the registers of the various modules in the design. The APF/BPF modules define master/slave interactions, namely between the host software and AFU and board peripherals. The APF Address Map Table describes the address mapping of the APF, followed by the BPF Address Map Table which describes the address mapping of the BPF.

Table: APF Address Map

Address Size (Bytes) Feature
0x00000–0x3FFFF 256K Board Peripherals (See BPF Address Map table)
0x40000 – 0x4FFFF 64K ST2MM
0x50000 – 0x5FFFF 64K Reserved
0x60000 – 0x60FFF 4K UART
0x61000 – 0x6FFFF 4K Reserved
0x70000 – 0x7FFFF 56K PR Gasket:4K= PR Gasket DFH, control and status4K= Port DFH4K=User Clock52K=Remote STP
0x80000 – 0x80FFF 4K AFU Error Reporting

Table: BPF Address Mapping

Address Size (Bytes) Feature
0x00000 - 0x0FFFF 64K FME
0x10000 - 0x10FFF 4K PCIe
0x11000 - 0x11FFF 4K Reserved
0x12000 - 0x12FFF 4K QSFP0
0x13000 - 0x13FFF 4K QSFP1
0x14000 - 0x14FFF 4K HSSI
0x15000 - 0x15FFF 4K EMIF

1.2.2 Customization Options

OFS is designed to be easily customizable to meet your design needs. The OFS FIM Customizations Table lists the general user flows for OFS Agilex PCIe Attach fseries-dk FIM development, along with example customizations for each user flow, plus links to step-by-step walkthroughs where available.

Table: OFS FIM Customizations

Customization Walkthrough Name
Add a new module to the OFS FIM
Modify and run unit tests for a FIM that has a new module
Hardware test a FIM that has a new module
Debug the FIM with Signal Tap
Compile the FIM in preparation for designing your AFU
Resize the Partial Reconfiguration Region
Modify PCIe Configuration Using OFSS
Modify PCIe Configuration Using IP Presets
Create a Minimal FIM
Migrate to a Different Agilex Device Number
Modify the Ethernet Sub-System to 2x4x10GbE
Modify the Ethernet Sub-System to 3x4x10GbE
Remove the HPS

1.3 Development Environment

This section describes the components required for OFS FIM development, and provides a walkthrough for setting up the environment on your development machine.

Note that your development machine may be different than your deployment machine where the FPGA acceleration card is installed. FPGA development work and deployment work can be performed either on the same machine, or on different machines as desired. Please see the Getting Started Guide: OFS for Agilex® 7 PCIe Attach FPGAs (F-Series Development Kit (2xF-Tile)) for instructions on setting up the environment for deployment machines.

1.3.1 Development Tools

The Development Environment Table describes the Best Known Configuration (BKC) for the tools that are required for OFS FIM development.

Table: Development Environment BKC

Component Version Installation Walkthrough
Operating System RedHat® Enterprise Linux® (RHEL) 8.6 N/A
Quartus Prime Software Quartus Prime Pro Version 23.4 for Linux + Patches 0.17 patch (PCIe) Section 1.3.1.1
Python 3.6.8 or later N/A
GCC 8.5.0 or later N/A
cmake 3.15 or later N/A
git 1.8.3.1 or later Section 1.3.1.2
FIM Source Files ofs-2024.1-1 Section 1.3.2.1
1.3.1.1 Walkthrough: Install Quartus Prime Pro Software

Intel Quartus Prime Pro Version 23.4 is verified to work with the latest OFS release ofs-2024.1-1. However, you have the option to port and verify the release on newer versions of Intel Quartus Prime Pro software.

Use RedHat® Enterprise Linux® (RHEL) 8.6 for compatibility with your development flow and also testing your FIM design in your platform.

Prior to installing Quartus:

  1. Ensure you have at least 64 GB of free space for Quartus Prime Pro installation and your development work.

    • Intel® recommends that your system be configured to provide virtual memory equal in size or larger than the recommended physical RAM size that is required to process your design.
    • The disk space may be significantly more based on the device families included in the install. Prior to installation, the disk space should be enough to hold both zipped tar files and uncompressed installation files. After successful installation, delete the downloaded zipped files and uncompressed zip files to release the disk space.

  2. Perform the following steps to satisfy the required dependencies.

    $ sudo dnf install -y gcc gcc-c++ make cmake libuuid-devel rpm-build autoconf automake bison boost boost-devel libxml2 libxml2-devel make ncurses grub2 bc csh flex glibc-locale-source libnsl ncurses-compat-libs

    Apply the following configurations.

    $ sudo localedef -f UTF-8 -i en_US en_US.UTF-8 
$ sudo ln -s /usr/lib64/libncurses.so.6 /usr/lib64/libncurses.so.5 
$ sudo ln -s /usr/bin/python3 /usr/bin/python

  3. Create the default installation path: /intelFPGA_pro/, where is the default path of the Linux workstation, or as set by the system administrator and is your Quartus version number.

    The installation path must satisfy the following requirements:

    • Contain only alphanumeric characters
    • No special characters or symbols, such as !$%@^&*<>,
    • Only English characters
    • No spaces

  4. Download your required Quartus Prime Pro Linux version here.

  5. Install required Quartus patches. The Quartus patch .run files can be found in the Assets tab on the OFS Release GitHub page. The patches for this release are 0.17 patch (PCIe).

  6. After running the Quartus Prime Pro installer, set the PATH environment variable to make utilities quartus, jtagconfig, and quartus_pgm discoverable. Edit your bashrc file ~/.bashrc to add the following line:

    export PATH=<Quartus install directory>/quartus/bin:$PATH
export PATH=<Quartus install directory>/qsys/bin:$PATH

    For example, if the Quartus install directory is /home/intelFPGA_pro/23.4 then the new line is:

    export PATH=/home/intelFPGA_pro/23.4/quartus/bin:$PATH
export PATH=/home/intelFPGA_pro/23.4/qsys/bin:$PATH

  7. Verify, Quartus is discoverable by opening a new shell:

    $ which quartus
/home/intelFPGA_pro/23.4/quartus/bin/quartus

1.3.2 FIM Source Files

The source files for the OFS Agilex PCIe Attach FIM are provided in the following repository: https://github.com/OFS/ofs-agx7-pcie-attach/releases/tag/ofs-2024.1-1

Some essential directories in the repository are described as follows:

ofs-agx7-pcie-attach
|  syn                      // Contains files related to synthesis
|  |  board                     // Contains synthesis files for several cards, including the fseries-dk 
|  |  |  fseries-dk                 // Contains synthesis files for fseries-dk
|  |  |  |  setup                       // Contains setup files, including pin constraints and location constraints
|  |  |  |  syn_top                     // Contains Quartus project files
|  verification             // Contains files for UVM testing
|  ipss                     // Contains files for IP Sub-Systems
|  |  qsfp                      // Contains source files for QSFP Sub-System
|  |  hssi                      // Contains source files for HSSI Sub-System
|  |  pmci                      // Contains source files for PMCI Sub-System (not used in F-Tile FIM)
|  |  pcie                      // Contains source files for PCIe Sub-System
|  |  mem                       // Contains source files for Memory Sub-System
|  sim                      // Contains simulation files
|  |  unit_test                 // Contains files for all unit tests
|  |  |  scripts                    // Contains script to run regression unit tests
|  license                  // Contains Quartus patch
|  ofs-common               // Contains files which are common across OFS platforms
|  |  verification              // Contains common UVM files
|  |  scripts                   // Contains common scripts
|  |  |  common
|  |  |  |  syn                         // Contains common scripts for synthesis, including build script
|  |  |  |  sim                         // Contains common scripts for simulation
|  |  tools                     // Contains common tools files
|  |  |  mk_csr_module              // Contains common files for CSR modules
|  |  |  fabric_generation          // Contains common files for APF/BPF fabric generation
|  |  |  ofss_config                // Contains common files for OFSS configuration tool
|  |  |  |  ip_params                   // Contains default IP parameters for certain Sub-Systems when using OFSS
|  |  src                       // Contains common source files, including host exercisers
|  tools                    //
|  |  ofss_config               // Contains top level OFSS files for each pre-made board configuration
|  |  |  hssi                       // Contains OFSS files for Ethernet-SS configuraiton
|  |  |  memory                     // Contains OFSS files for Memory-SS configuration
|  |  |  pcie                       // Contains OFSS files for PCIe-SS configuration
|  |  |  iopll                      // Contains OFSS files for IOPLL configuration
|  src                      // Contains source files for Agilex PCIe Attach FIM
|  |  pd_qsys                   // Contains source files related to APF/BPF fabric
|  |  includes                  // Contains source file header files
|  |  top                       // Contains top-level source files, including design top module
|  |  afu_top                   // Contains top-level source files for AFU
1.3.2.1 Walkthrough: Clone FIM Repository

Perform the following steps to clone the OFS Agilex® 7 PCIe Attach FIM Repository:

  1. Create a new directory to use as a clean starting point to store the retrieved files. 

    mkdir OFS_BUILD_ROOT
cd OFS_BUILD_ROOT
export OFS_BUILD_ROOT=$PWD

  2. Clone GitHub repository using the HTTPS git method 

    git clone --recurse-submodules https://github.com/OFS/ofs-agx7-pcie-attach.git

  3. Check out the correct tag of the repository 

    cd ofs-agx7-pcie-attach
git checkout --recurse-submodules tags/ofs-2024.1-1

  4. Ensure that ofs-common has been cloned as well

    git submodule status

    Example output:

    ea585a4f48d50faf3ae7ecfbec82525a8d22c730 ofs-common (ofs-2024.1-1)

1.3.3 Environment Variables

The OFS FIM compilation and simulation scripts require certain environment variables be set prior to execution.

1.3.3.1 Walkthrough: Set Development Environment Variables

Perform the following steps to set the required environment variables. These environment variables must be set prior to simulation or compilation tasks so it is recommended that you create a script to set these variables.

  1. Navigate to the top level directory of the cloned OFS FIM repository.

    cd ofs-agx7-pcie-attach

  2. Set project variables 

    # Set OFS Root Directory - e.g. this is the top level directory of the cloned OFS FIM repository
export OFS_ROOTDIR=$PWD

  3. Set variables based on your development environment 

    # Set proxies if required for your server
export http_proxy=<YOUR_HTTP_PROXY>
export https_proxy=<YOUR_HTTPS_PROXY>
export ftp_proxy=<YOUR_FTP_PROXY>
export socks_proxy=<YOUR_SOCKS_PROXY>
export no_proxy=<YOUR_NO_PROXY>

# Set Quartus license path
export LM_LICENSE_FILE=<YOUR_LM_LICENSE_FILE>

# Set Synopsys License path (if using Synopsys for simulation)
export DW_LICENSE_FILE=<YOUR_DW_LICENSE_FILE>
export SNPSLMD_LICENSE_FILE=<YOUR_SNPSLMD_LICENSE_FILE>

# Set Quartus Installation Directory - e.g. $QUARTUS_ROOTDIR/bin contains Quartus executables
export QUARTUS_ROOTDIR=<YOUR_QUARTUS_INSTALLATION_DIRECTORY>

# Set the Tools Directory - e.g. $TOOLS_LOCATION contains the 'synopsys' directory if you are using Synopsys. Refer to the $VCS_HOME variable for an example.
export TOOLS_LOCATION=<YOUR_TOOLS_LOCATION>

  4. Set generic environment variables

    # Set Work directory 
export WORKDIR=$OFS_ROOTDIR

# Set Quartus Tools variables
export QUARTUS_HOME=$QUARTUS_ROOTDIR
export QUARTUS_INSTALL_DIR=$QUARTUS_ROOTDIR
export QUARTUS_ROOTDIR_OVERRIDE=$QUARTUS_ROOTDIR
export QUARTUS_VER_AC=$QUARTUS_ROOTDIR
export IP_ROOTDIR=$QUARTUS_ROOTDIR/../ip
export IMPORT_IP_ROOTDIR=$IP_ROOTDIR
export QSYS_ROOTDIR=$QUARTUS_ROOTDIR/../qsys/bin

# Set Verification Tools variables (if running simulations)
export DESIGNWARE_HOME=$TOOLS_LOCATION/synopsys/vip_common/vip_Q-2020.03A
export UVM_HOME=$TOOLS_LOCATION/synopsys/vcsmx/S-2021.09-SP1/linux64/rhel/etc/uvm
export VCS_HOME=$TOOLS_LOCATION/synopsys/vcsmx/S-2021.09-SP1/linux64/rhel
export MTI_HOME=$QUARTUS_ROOTDIR/../questa_fse
export VERDIR=$OFS_ROOTDIR/verification
export VIPDIR=$VERDIR

# Set OPAE variables
export OPAE_SDK_REPO_BRANCH=release/2.12.0

# Set PATH to include compilation and simulation tools
export PATH=$QUARTUS_HOME/bin:$QUARTUS_HOME/../qsys/bin:$QUARTUS_HOME/sopc_builder/bin/:$IOFS_BUILD_ROOT/opae-sdk/install-opae-sdk/bin:$MTI_HOME/linux_x86_64/:$MTI_HOME/bin/:$DESIGNWARE_HOME/bin:$VCS_HOME/bin:$PATH

1.3.4 Walkthrough: Set Up Development Environment

This walkthrough guides you through the process of setting up your development environment in preparation for FIM development. This flow only needs to be done once on your development machine.

  1. Ensure that Quartus Prime Pro Version 23.4 for Linux with Agilex FPGA device support is installed on your development machine. Refer to the Install Quartus Prime Pro Software section for step-by-step installation instructions.

    1. Verify version number
      quartus_sh --version

      Example Output:

      Quartus Prime Shell
Version 23.4 Build 94 06/14/2023 SC Pro Edition

  2. Ensure that all support tools are installed on your development machine, and that they meet the version requirements.

    1. Python 3.6.8 or later

      1. Verify version number

        python --version

        Example Output:

        Python 3.6.8

    2. GCC 8.5.0 or later

      1. Verify version number

        gcc --version

        Example output:

        gcc (GCC) 8.5.0

    3. cmake 3.15 or later

      1. Verify version number

        cmake --version

        Example output:

        cmake version 3.15

    4. git 1.8.3.1 or later.

      1. Verify version number

        git --version

        Example output:

        git version 1.8.3.1

  3. Clone the ofs-agx7-pcie-attach repository. Refer to the Clone FIM Repository section for step-by-step instructions.

  4. Install UART IP license patch .02.

    1. Navigate to the license directory

      cd $IOFS_BUILD_ROOT/license

    2. Install Patch 0.02

      sudo ./quartus-0.0-0.02iofs-linux.run

  5. Install Quartus Patches 0.17 patch (PCIe). All required patches are provided in the Assets of the OFS FIM Release Tag: https://github.com/OFS/ofs-agx7-pcie-attach/releases/tag/ofs-2024.1-1

    1. Extract and unzip the patch-agx7-2024-1.tar.gz file.

      tar -xvzf patch-agx7-2024-1.tar.gz

    2. Run each patch .run file. As an example:

      sudo ./quartus-23.4-0.17-linux.run

  6. Verify that patches have been installed correctly. They should be listed in the output of the following command.

    quartus_sh --version

  7. Set required environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

This concludes the walkthrough for setting up your development environment. At this point you are ready to begin FIM development.

2. FIM Compilation

This section describes the process of compiling OFS FIM designs using the provided build scripts. It contains two main sections:

The walkthroughs provided in this section are:

2.1 Compilation Theory

This sections describes the theory behind FIM compilation.

2.1.1 FIM Build Script

The OFS Common Repository contains a script named build_top.sh which is used to build OFS FIM designs and generate output files that can be programmed to the board. After cloning the OFS FIM repository (with the ofs-common repository included), the build script can be found in the following location:

$OFS_ROOTDIR/ofs-common/scripts/common/syn/build_top.sh

The usage of the build_top.sh script is as follows:

build_top.sh [-k] [-p] [-e] [--stage=<action>] [--ofss=<ip_config>] <build_target>[:<fim_options>] [<work_dir_name>]
Field Options Description Requirement
-k None Keep. Preserves and rebuilds within an existing work tree instead of overwriting it. Optional
-p None When set, and if the FIM supports partial reconfiguration, a PR template tree is generated at the end of the FIM build. The PR template tree is located in the top of the work directory but is relocatable and uses only relative paths. See $OFS_ROOTDIR/syn/common/scripts generate_pr_release.sh for details. Optional
-e None Run only Quartus analysis and elaboration. It completes the setup stage, passes -end synthesis to the Quartus compilation flow and exits without running the finish stage. Optional
--stage all | setup | compile | finish Controls which portion of the OFS build is run.
  - all: Run all build stages (default)
  - setup: Initialize a project in the work directory
  - compile: Run the Quartus compilation flow on a project that was already initialized with setup
  - finish: Complete OFS post-compilation tasks, such as generating flash images and, if -p is set, generating a release.		 Optional
--ofss <ip_config> Used to modify IP, such as the PCIe SS, using .ofss configuration files. This parameter is consumed during the setup stage and IP is updated only inside the work tree. More than one .ofss file may be passed to the --ofss switch by concatenating them separated by commas. For example: --ofss config_a.ofss,config_b.ofss. Optional
<build_target> fseries-dk Specifies which board is being targeted. Required
<fim_options> flat | null_he_lb | null_he_hssi | null_he_mem | null_he_mem_tg | no_hssi Used to change how the FIM is built.
  • flat - Compiles a flat design (no PR assignments). This is useful for bringing up the design on a new board without dealing with PR complexity.
  • null_he_lb - Replaces the Host Exerciser Loopback (HE_LBK) with he_null.
  • null_he_hssi - Replaces the Host Exerciser HSSI (HE_HSSI) with he_null.
  • null_he_mem - Replaces the Host Exerciser Memory (HE_MEM) with he_null.
  • null_he_mem_tg - Replaces the Host Exerciser Memory Traffic Generator with he_null.
  • no_hssi - Removes the HSSI-SS from the design.
More than one FIM option may be passed included in the <fim_options> list by concatenating them separated by commas. For example: <build_target>:flat,null_he_lb,null_he_hssi		 Optional
<work_dir_name> String Specifies the name of the work directory in which the FIM will be built. If not specified, the default target is $OFS_ROOTDIR/work Optional

Note: The he_null is a minimal block with CSRs that responds to PCIe MMIO requests in order to keep PCIe alive.

The build script copies source files from the existing cloned repository into the specified work directory, which are then used for compilation. As such, any changes made in the base source files will be included in all subsequent builds, unless the -k option is used, in which case an existing work directories files are used as-is. Likewise, any changes made in a work directory is only applied to that work directory, and will not be updated in the base repository by default.

Refer to Compile OFS FIM which provides step-by-step instructions for running the build_top.sh script with some of the different available options.

2.1.2 OFSS File Usage

The OFS FIM build script can use OFSS files to easily customize design IP prior to compilation using preset configurations. The OFSS files specify certain parameters for different IPs. Using OFSS is provided as a convenience feature for building FIMs. The Provided OFSS Files table below describes the pre-made OFSS files for the fseries-dk that can be found in the $OFS_ROOTDIR/tools/ofss_config directory. Only the OFSS files listed in this table are compatible with the fseries-dk In order to compile an fseries-dk FIM, you must supply OFSS files corresponding to each IP that is present in your design.

Table: Provided OFSS Files

OFSS File Name Location Type Description
fseries-dk.ofss $OFS_ROOTDIR/tools/ofss_config Top Includes the following OFSS files [1]:
  • fseries-dk_base.ofss
  • pcie_host.ofss
  • iopll.ofss
  • memory_ftile.ofss
fseries-dk_base.ofss $OFS_ROOTDIR/tools/ofss_config ofs Defines certain attributes of the design, including the platform name, device family, fim type, part number, and device ID.
pcie_host.ofss $OFS_ROOTDIR/tools/ofss_config/pcie pcie Defines the PCIe Subsystem with the following configuration:
  • PF0 (3 VFs)
  • PF1 (0 VFs)
  • PF2 (0 VFs)
  • PF3 (0 VFs)
  • PF4 (0 VFs)
pcie_1pf_1vf.ofss $OFS_ROOTDIR/tools/ofss_config/pcie pcie Defines the PCIe Subsystem with the following configuration:
  • PF0 (1 VF)
iopll.ofss $OFS_ROOTDIR/tools/ofss_config/iopll iopll Sets the IOPLL frequency to 470 MHz
memory_ftile.ofss $OFS_ROOTDIR/tools/ofss_config/memory memory Defines the memory IP preset file to be used during the build as fseries-dk
hssi_8x25_ftile.ofss $OFSS_ROOTDIR/tools/ofss_config/hssi hssi Defines the Ethernet-SS IP preset file to be used during the build as fseries-dk

[1] The fseries-dk.ofss file does not include an HSSI OFSS file by default. If you are using the fseries-dk.ofss file when building the FIM, you must also specify an HSSI OFSS file for F-tile. Refer to the Compile OFS FIM Section for examples of this flow.

Note: Using OFSS is required for FIM builds targeting the F-tile Development Kit.

There can typically be three sections contained within an OFSS file.

  • [include]

    • This section of an OFSS file contains elements separated by a newline, where each element is the path to an OFSS file that is to be included for configuration by the OFSS Configuration Tool. Ensure that any environment variables (e.g. $OFS_ROOTDIR) are set correctly. The OFSS Config tool uses breadth first search to include all of the specified OFSS files; the ordering of OFSS files does not matter

  • [ip]

    • This section of an OFSS file contains a key value pair that allows the OFSS Config tool to determine which IP configuration is being passed in. The currently supported values of IP are ofs, iopll, pcie, memory, and hssi.

  • [settings]

    • This section of an OFSS file contains IP specific settings. Refer to existing IP OFSS file of different types to see what IP settings are set. For the IP type ofss, the settings will be information of the OFS device (platform, family, fim, part #, device_id)
2.1.2.1 Platform OFSS File

The <platform>.ofss file (e.g. $OFS_ROOTDIR/tools/ofss_config/fseries-dk.ofss) is the platform level OFSS wrapper file. This is typically the OFSS file that is provided to the build script. It only contains an include section which lists all other OFSS files that are to be used when the <platform>.ofss file is passed to the build script.

An example structure of a <platform>.ofss file is as follows:

[include]
<PATH_TO_PLATFORM_BASE_OFSS_FILE>
<PATH_TO_PCIE_OFSS_FILE>
<PATH_TO_IOPLL_OFSS_FILE>
<PATH_TO_MEMORY_OFSS_FILE>
<PATH_TO_HSSI_OFSS_FILE>
2.1.2.2 OFS IP OFSS File

An OFSS file with IP type ofs (e.g. $OFS_ROOTDIR/tools/ofss_config/fseries-dk_base.ofss) contains board specific information for the target board.

Currently supported configuration options for an OFSS file with IP type ofs are described in the OFS IP OFSS File Options table.

Table: OFS IP OFSS File Options

Section Parameter fseries-dk Default Value
[ip] type ofs
[settings] platform N6001
family agilex
fim base_x16
part AGFB027R24C2E2VR2
device_id 6001
2.1.2.3 PCIe IP OFSS File

An OFSS file with IP type pcie (e.g. $OFS_ROOTDIR/tools/ofss_config/pcie/pcie_host.ofss) is used to configure the PCIe-SS in the FIM.

The PCIe OFSS file has a special section type ([pf*]) which is used to define physical functions (PFs) in the FIM. Each PF has a dedicated section, where the * character is replaced with the PF number. For example, [pf0], [pf1], etc. For reference FIM configurations, 0 virtual functions (VFs) on PF0 is not supported. This is because the PR region cannot be left unconnected. A NULL AFU may need to be instantiated in this special case. PFs must be consecutive. The PFVF Limitations table describes the supported number of PFs and VFs.

Table: PF/VF Limitations

Parameter Value
Min # of PFs 1 (on PF0)
Max # of PFs 8
Min # of VFs 1 on PF0
Max # of VFs 2000 distributed across all PFs

Currently supported configuration options for an OFSS file with IP type pcie are described in the PCIe IP OFSS File Options table.

Table: PCIe IP OFSS File Options

Section Parameter Options Default Description
[ip] type pcie N/A Specifies that this OFSS file configures the PCIe-SS
[settings] output_name pcie_ss N/A Specifies the output name of the PCIe-SS IP
preset String N/A OPTIONAL - Specifies the name of a PCIe-SS IP presets file to use when building the FIM. When used, a presets file will take priority over any other parameters set in this OFSS file.
[pf*] num_vfs Integer 0 Specifies the number of Virtual Functions in the current PF
bar0_address_width Integer 12
bar4_address_width Integer 14
vf_bar0_address_width Integer 12
ats_cap_enable 0 | 1 0
vf_ats_cap_enable 0 | 1 0
prs_ext_cap_enable 0 | 1 0
pasid_cap_enable 0 | 1 0
pci_type0_vendor_id 32'h Value 0x00008086
pci_type0_device_id 32'h Value 0x0000bcce
revision_id 32'h Value 0x00000001
class_code 32'h Value 0x00120000
subsys_vendor_id 32'h Value 0x00008086
subsys_dev_id 32'h Value 0x00001771
sriov_vf_device_id 32'h Value 0x0000bccf
exvf_subsysid 32'h Value 0x00001771

The default values for all PCIe-SS parameters (that are not defined in the PCIe IP OFSS file) are defined in $OFS_ROOTDIR/ofs-common/tools/ofss_config/ip_params/pcie_ss_component_parameters.py. When using a PCIe IP OFSS file during compilation, the PCIe-SS IP that is used will be defined based on the values in the PCIe IP OFSS file plus the parameters defined in pcie_ss_component_parameters.py.

2.1.2.4 IOPLL IP OFSS File

An OFSS file with IP type iopll (e.g. $OFS_ROOTDIR/tools/ofss_config/iopll/iopll.ofss) is used to configure the IOPLL in the FIM.

The IOPLL OFSS file has a special section type ([p_clk]) which is used to define the IOPLL clock frequency.

Currently supported configuration options for an OFSS file with IP type iopll are described in the IOPLL OFSS File Options table.

Table: IOPLL OFSS File Options

Section Parameter Options Description
[ip] type iopll Specifies that this OFSS file configures the IOPLL
[settings] output_name sys_pll Specifies the output name of the IOPLL.
instance_name iopll_0 Specifies the instance name of the IOPLL.
[p_clk] freq Integer: 250 - 470 Specifies the IOPLL clock frequency in MHz.

Note: The following frequencies have been tested on reference boards: 350MHz, 400MHz, 470MHz.

2.1.2.5 Memory IP OFSS File

An OFSS file with IP type memory (e.g. $OFS_ROOTDIR/tools/ofss_config/memory/memory_ftile.ofss) is used to configure the Memory-SS in the FIM.

The Memory OFSS file specifies a preset value, which selects a presets file (.qprs) to configure the Memory-SS.

Currently supported configuration options for an OFSS file with IP type memory are described in the Memory OFSS File Options table.

Table: Memory OFSS File Options

Section Parameter Options Description
[ip] type memory Specifies that this OFSS file configures the Memory-SS
[settings] output_name mem_ss_fm Specifies the output name of the Memory-SS.
preset fseries-dk | String[1] Specifies the name of the .qprs presets file that will be used to build the Memory-SS.

[1] You may generate your own .qprs presets file with a unique name using Quartus.

Pre-provided Memory-SS presets files are located in the $OFS_ROOTDIR/ipss/mem/qip/presets directory.

2.1.2.6 HSSI IP OFSS File

An OFSS file with IP type hssi (e.g. $OFS_ROOTDIR/tools/ofss_config/hssi/hssi_8x25_ftile.ofss) is used to configure the Ethernet-SS in the FIM.

Currently supported configuration options for an OFSS file with IP type hssi are described in the HSSI OFSS File Options table.

Table: HSSI OFSS File Options

Section Parameter Options Description
[ip] type hssi Specifies that this OFSS file configures the Ethernet-SS
[settings] output_name hssi_ss Specifies the output name of the Ethernet-SS
num_channels Integer Specifies the number of channels.
data_rate 10GbE | 25GbE Specifies the data rate[1]
preset fseries-dk | String[2] Specifies the name of the .qprs preset file that will be used to build the Ethernet-SS. This will overwrite the other settings in this OFSS file.

[1] The presets file will take priority over the data_rate parameter, so this value will not take effect when using a presets file.

[2] You may generate your own .qprs presets file with a unique name using Quartus.

Pre-provided Ethernet-SS presets are located in the $OFS_ROOTDIR/ipss/hssi/qip/hssi_ss/presets directory.

2.1.3 OFS Build Script Outputs

The output files resulting from running the the OFS FIM build_top.sh build script are copied to a single directory during the finish stage of the build script. The path for this directory is: $OFS_ROOTDIR/<WORK_DIRECTORY>/syn/board/fseries-dk/syn_top/output_files.

The output files include programmable images and compilation reports. The OFS Build Script Output Descriptions table describes the images that are generated by the build script.

Table: OFS Build Script Output Descriptions

File Name Description
ofs_top.sof The FIM design SRAM Object File; a binary file of the compiled FIM image.
ofs_top_hps.sof The build assembly process combines the FPGA ofs_top.sof programming file with u-boot-spl-dtb.hex to produce this file.

2.2 Compilation Flows

This section provides information for using the build script to generate different FIM types. Walkthroughs are provided for each compilation flow. These walkthroughs require that the development environment has been set up as described in the Set Up Development Environment section.

2.2.1 Flat FIM

A flat FIM is compiled such that there is no partial reconfiguration region, and the entire design is built as a flat design. This is useful for compiling new designs without worrying about the complexity introduced by partial reconfiguration. The flat compile removes the PR region and PR IP; thus, you cannot use the -p build flag when using the flat compile setting. Refer to the Compile OFS FIM Section for step-by-step instructions for this flow.

2.2.2 In-Tree PR FIM

An In-Tree PR FIM is the default compilation if no compile flags or compile settings are used. This flow will compile the design with the partial reconfiguration region, but it will not create a relocatable PR directory tree to aid in AFU development. Refer to the Compile OFS FIM Section for step-by-step instructions for this flow.

2.2.3 Out-of-Tree PR FIM

An Out-of-Tree PR FIM will compile the design with the partial reconfiguration region, and will create a relocatable PR directory tree to aid in AFU workload development. This is especially useful if you are developing a FIM to be used by another team developing AFU workloads. This is the recommended build flow in most cases. There are two ways to create the relocatable PR directory tree:

  • Run the FIM build script with the -p option. Refer to the Compile OFS FIM Section for step-by-step instructions for this flow.
  • Run the generate_pr_release.sh script after running the FIM build script. Refer to the Manually Generate OFS Out-Of-Tree PR FIM Section step-by-step instructions for this flow.

In both cases, the generate_pr_release.sh is run to create the relocatable build tree. This script is located at $OFS_ROOTDIR/ofs-common/scripts/common/syn/generate_pr_release.sh. Usage for this script is as follows:

generate_pr_release.sh -t <PATH_OF_RELOCATABLE_PR_TREE> <BOARD_TARGET> <WORK_DIRECTORY>

The Generate PR Release Script Options table describes the options for the generate_pr_release.sh script.

Table: Generate PR Release Script Options

Parameter Options Description
<PATH_OF_RELOCATABLE_PR_TREE> String Specifies the location of the relocatable PR directory tree to be created.
<BOARD_TARGET> fseries-dk Specifies the name of the board target.
<WORK_DIRECTORY> String Specifies the existing work directory from which the relocatable PR directory tree will be created from.

After generating the relocatable build tree, it is located in the $OFS_ROOTDIR/<WORK_DIRECTORY>/pr_build_template directory (or the directory you specified if generated separately). The contents of this directory have the following structure:

├── bin
├── ├── afu_synth
├── ├── qar_gen
├── ├── update_pim
├── ├── run.sh
├── ├── build_env_config
├── README
├── hw
├── ├── lib
├── ├── ├── build
├── ├── ├── fme-ifc-id.txt
├── ├── ├── platform
├── ├── ├── fme-platform-class.txt
├── ├── blue_bits
├── ├── ├── ofs_top_hps.sof
└── ├── ├── ofs_top.sof

2.2.3 HE_NULL FIM

An HE_NULL FIM refers to a design with one, some, or all of the Host Exercisers replaced by he_null blocks. The he_null is a minimal block with CSRs that responds to PCIe MMIO requests in order to keep PCIe alive. You may use any of the build flows (flat, in-tree, out-of-tree) with the HE_NULL compile options. The HE_NULL compile options are as follows:

  • null_he_lb - Replaces the Host Exerciser Loopback (HE_LBK) with he_null
  • null_he_hssi - Replaces the Host Exerciser HSSI (HE_HSSI) with he_null
  • null_he_mem - Replaces the Host Exerciser Memory (HE_MEM) with he_null
  • null_he_mem_tg - Replaces the Host Exerciser Memory Traffic Generator with he_null

The Compile OFS FIM section gives step-by-step instructions for this flow.

2.2.5 Walkthrough: Compile OFS FIM

Perform the following steps to compile the OFS Agilex PCIe Attach FIM for fseries-dk:

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Navigate to the root directory.

    cd $OFS_ROOTDIR

  4. Run the build_top.sh script with the desired compile options using the fseries-dk OFSS presets. In this case you must use the fseries-dk.ofss file, and then specify the 8x25G HSSI configuration using the hssi_8x25_ftile.ofss (this is not necessary if using the no_hssi compile option).

    • Flat FIM

      ./ofs-common/scripts/common/syn/build_top.sh --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk:flat work_fseries-dk_flat

    • In-Tree PR FIM

      ./ofs-common/scripts/common/syn/build_top.sh --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk_in_tree_pr

    • Out-of-Tree PR FIM

      ./ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk_oot_pr

    • HE_NULL Flat FIM

      ./ofs-common/scripts/common/syn/build_top.sh --ofss tools/ofss_config/fseries-dk.ofss fseries-dk:flat,null_he_lb,null_he_hssi,null_he_mem,null_he_mem_tg work_fseries-dk_flat

  5. Once the build script is complete, the build summary should report that the build is complete and passes timing. For example:

    ***********************************
***
***        OFS_PROJECT: ofs-agx7-pcie-attach
***        OFS_BOARD: fseries-dk
***        Q_PROJECT:  ofs_top
***        Q_REVISION: ofs_top
***        SEED: 6
***        Build Complete
***        Timing Passed!
***
***********************************

2.2.6 Walkthrough: Manually Generate OFS Out-Of-Tree PR FIM

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Navigate to the root directory.

    cd $OFS_ROOTDIR

  4. Run the build_top.sh script with the desired compile options using the fseries-dk OFSS presets. In order to create the relocatable PR tree, you may not compile with the flat option. For example:

    ./ofs-common/scripts/common/syn/build_top.sh --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk

  5. Run the generate_pr_release.sh script to create the relocatable PR tree.

    ./ofs-common/scripts/common/syn/generate_pr_release.sh -t work_fseries-dk/pr_build_template fseries-dk work_fseries-dk

2.2.7 Compilation Seed

You may change the seed which is used by the build script during Quartus compilation to change the starting point of the fitter. Trying different seeds is useful when your design is failing timing by a small amount.

2.2.7.1 Walkthrough: Change the Compilation Seed

Perform the following steps to change the compilation seed for the FIM build.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Edit the SEED assignment in the $OFS_ROOTDIR/syn/board/fseries-dk/syn_top/ofs_top.qsf file to your desired seed value. The value can be any non-negative integer value.

    set_global_assignment -name SEED 1

  4. Build the FIM. Refer to the Compile OFS FIM section for instructions.

3. FIM Simulation

Unit level simulation of key components in the FIM is provided for verification of the following areas:

  • Ethernet
  • PCIe
  • External Memory
  • Core FIM

The Unit Level simulations work with Synopsys VCS/VCSMX or Mentor Graphics Questasim simulators. The scripts to run each unit level simulation are located in $OFS_ROOTDIR/sim/unit_test. Each unit test directory contains a README which describes the test in detail. Refer to the Supported Unit Tests table for a list of the supported unit tests.

Note: The OFS Agilex PCIe Attach FIM for the F-Tile Development Kit does not support all of the unit tests that are provided in the unit_test directory.

Table: Supported Unit Tests

Test Name Description
bfm_test This is the unit test for PCIe BFM. The test uses HE-LB to perform memory loopback between FIM and the host.
csr_test This is the unit test for FIM CSR access and AFU memory write/read
dfh_walker This is the unit test for FME DFH walking
flr This is the unit test for PCIe PF/VF FLR
fme_csr_access This is the a unit test for the register access logic for $OFS_ROOTDIR/ofs-common/src/common/fme/fme_csr.sv
fme_csr_directed This is the unit test for $OFS_ROOTDIR/ofs-common/src/common/fme/fme_csr.sv
he_lb_test This is the unit test for HE_LPBK. The test uses HE-LB to perform memory loopback between FIM and the host.
he_null_test This is the unit test for HE-NULL Exerciser. The test issues basic mmio Rd/Wr requests targetting HE-NULL CSRs.
indirect_csr This is the unit test for axi4lite_indirect_csr_if module.
pcie_csr_test This is the unit test for PCIE CSR access.
pf_vf_access_test This is the unit test for PCIe PF/VF MMIO. Each function has a feature GUID at offset 0x8 with an associated register map.
port_gasket_test This is the unit test for pg_csr block and it's connectivity to fabric. The test issues mmio Rd/Wr requests targetting the csrs in port_gasket. This test does not do any functional testing of partial reconfiguration, user clock or remote stp.
remote_stp_test This is the unit test for remote stp. It covers mmio read access to remote_stp registers.
uart_csr This is the unit test for UART CSR accesses.

3.1 Simulation File Generation

The simulation files must be generated prior to running unit level simulations. The script to generate simulation files is in the following location:

$OFS_ROOTDIR/ofs-common/scripts/common/sim/gen_sim_files.sh

The usage of the gen_sim_files.sh script is as follows:

gen_sim_files.sh [--ofss=<ip_config>] <build_target>[:<fim_options>] [<device>] [<family>]

The Gen Sim Files Script Options table describes the options for the gen_sim_files.sh script.

Table: Gen Sim Files Script Options

Field Options Description Requirement
--ofss <ip_config> Used to modify IP, such as the PCIe SS, using .ofss configuration files. More than one .ofss file may be passed to the --ofss switch by concatenating them separated by commas. For example: --ofss config_a.ofss,config_b.ofss. Platform Dependent[1]
<build_target> fseries-dk | n6001 Specifies which board is being targeted. Required
<fim_options> null_he_lb | null_he_hssi | null_he_mem | null_he_mem_tg Used to change how the FIM is built.
  - null_he_lb - Replaces the Host Exerciser Loopback (HE_LBK) with he_null.
  - null_he_hssi - Replaces the Host Exerciser HSSI (HE_HSSI) with he_null.
  - null_he_mem - Replaces the Host Exerciser Memory (HE_MEM) with he_null.
  - null_he_mem_tg - Replaces the Host Exerciser Memory Traffic Generator with he_null.
More than one FIM option may be passed included in the <fim_options> list by concatenating them separated by commas. For example: <build_target>:null_he_lb,null_he_hssi		 Optional
<device> string Specifies the device ID for the target FPGA. If not specified, the default device is parsed from the QSF file for the project. Optional
<family> string Specifies the family for the target FPGA. If not specified, the default family is parsed from the QSF file for the project. Optional

[1] Using OFSS is required for the F-Tile Development Kit.

Refer to the Run Individual Unit Level Simulation section for an example of the simulation files generation flow.

When running regression tests, you may use the -g command line argument to generate simulation files; refer to the Run Regression Unit Level Simulation section for step-by-step instructions.

3.2 Individual Unit Tests

Each unit test may be run individually using the run_sim.sh script located in the following directory:

$OFS_ROOTDIR/ofs-common/scripts/common/sim/run_sim.sh

The usage for the run_sim.sh script is as follows:

sh run_sim.sh TEST=<test> [VCSMX=<0|1> | MSIM=<0|1>]

The Run Sim Script Options table describes the options for the run_sim.sh script.

Table: Run Sim Script Options

Field Options Description
TEST String Specify the name of the test to run, e.g. dfh_walker
VCSMX 0 | 1 When set, the VCSMX simulator will be used
MSIM 0 | 1 When set, the QuestaSim simulator will be used

Note: The default simulator is VCS if neither VCSMX nor MSIM are set.

The log for a unit test is stored in a transcript file in the simulation directory of the test that was run.

$OFS_ROOTDIR/sim/unit_test/<TEST_NAME>/<SIMULATOR>/transcript

For example, the log for the DFH walker test using VCSMX would be found at:

$OFS_ROOTDIR/sim/unit_test/dfh_walker/sim_vcsmx/transcript

The simulation waveform database is saved as vcdplus.vpd for post simulation review.

3.2.1 Walkthrough: Run Individual Unit Level Simulation

Perform the following steps to run an individual unit test.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Generate the simulation files for the fseries-dk

    cd $OFS_ROOTDIR/ofs-common/scripts/common/sim

./gen_sim_files.sh --ofss=$OFS_ROOTDIR/tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk

  4. Navigate to the common simulation directory 

    cd $OFS_ROOTDIR/ofs-common/scripts/common/sim

  5. Run the desired unit test using your desired simulator

    • Using VCS

      sh run_sim.sh TEST=<test_name>

    • Using VCSMX

      sh run_sim.sh TEST=<test_name> VCSMX=1

    • Using QuestaSim

      sh run_sim.sh TEST=<test_name> MSIM=1

    • For example, to run the DFH walker test using VCSMX:

      sh run_sim.sh TEST=dfh_walker VCSMX=1

  6. Once the test is complete, check the output for the simulation results. Review the log for detailed test results.

    Test status: OK

********************
  Test summary
********************
   test_dfh_walking (id=0) - pass
Test passed!
Assertion count: 0
$finish called from file "/home/ofs-agx7-pcie-attach/sim/unit_test/scripts/../../bfm/rp_bfm_simple/tester.sv", line 210.
$finish at simulation time         356233750000
           V C S   S i m u l a t i o n   R e p o r t
Time: 356233750000 fs
CPU Time:     57.730 seconds;       Data structure size:  47.2Mb
Tue Sep  5 09:44:19 2023
run_sim.sh: USER_DEFINED_SIM_OPTIONS +vcs -l ./transcript
run_sim.sh: run_sim.sh DONE!

3.3 Regression Unit Tests

You may use the regression script regress_run.py to run some or all of the unit tests available with a single command. The regression script is in the following location:

$OFS_ROOTDIR/sim/unit_test/scripts/regress_run.py

The usage of the regression script is as follows:

regress_run.py [-h] [-l] [-n <num_procs>] [-k <test_package>] [-s <simulator>] [-g] [--ofss <ip_config>] [-b <board_name>] [-e]

The Regression Unit Test Script Options table describes the options for the regress_run.py script.

Table: Regression Unit Test Script Options

Field Options Description
-h | --help N/A Show the help message and exit
-l | --local N/A Run regression locally
-n | --n_procs Integer Maximum number of processes/tests to run in parallel when run locally. This has no effect on farm runs.
-k | --pack all | fme | he | hssi | list | mem | pmci Test package to run during regression. The "list" option will look for a text file named "list.txt" in the "unit_test" directory for a text list of tests to run (top directory names). The default test package is all.
-s | --sim vcs | vcsmx | msim Specifies the simulator used for the regression tests. The default simulator is vcs
-g | --gen_sim_files N/A Generate simulation files. This only needs to be done once per repo update. This is the equivalent of running the gen_sim_files.sh script.
-o | --ofss <ip_config> Used to modify IP, such as the PCIe SS, using .ofss configuration files. More than one .ofss file may be passed to the --ofss switch by concatenating them separated by commas. For example: --ofss config_a.ofss,config_b.ofss.
-b | --board_name n6000 | n6001 | fseries-dk Specifies the board target
-e | --email_list String Specifies email list to send results to multiple recipients

The log for each unit test that is run by the regression script is stored in a transcript file in the simulation directory of the test that was run.

$OFS_ROOTDIR/sim/unit_test/<TEST_NAME>/<SIMULATOR>/transcript

For example, the log for the DFH walker test using VCSMX would be found at:

$OFS_ROOTDIR/sim/unit_test/dfh_walker/sim_vcsmx/transcript

The simulation waveform database is saved as vcdplus.vpd for post simulation review.

3.3.1 Walkthrough: Run Regression Unit Level Simulation

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Create a test list file to only run the specified unit level simulations.

    touch $OFS_ROOTDIR/sim/unit_test/list.txt

    Copy the following list into the new file. You may remove tests from this list as desired.

    ./bfm_test/set_params.sh
./csr_test/set_params.sh
./dfh_walker/set_params.sh
./flr/set_params.sh
./fme_csr_access/set_params.sh
./fme_csr_directed/set_params.sh
./he_lb_test/set_params.sh
./he_null_test/set_params.sh
./hssi_csr_test/set_params.sh
./hssi_kpi_test/set_params.sh
./hssi_test/set_params.sh
./indirect_csr/set_params.sh
./pcie_csr_test/set_params.sh
./pf_vf_access_test/set_params.sh
./port_gasket_test/set_params.sh
./qsfp_test/set_params.sh
./remote_stp_test/set_params.sh
./uart_csr/set_params.sh

  4. Run regression test with the your desired options. For example, to simulate with the options to generate simulation files, run locally, use 8 processes, run all tests, use VCS simulator, and target the fseries-dk:

    cd $OFS_ROOTDIR/sim/unit_test/scripts

python regress_run.py --ofss $OFS_ROOTDIR/tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss -g -l -n 8 -k list -s vcs -b fseries-dk

    Note: You may run all available tests by using -k all instead of creating and using -k list.

  5. Once all tests are complete, check that the tests have passed.

    2023-08-30 15:00:50,256: Passing Unit Tests:13/13 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2023-08-30 15:00:50,256:    bfm_test:......... PASS -- Time Elapsed:0:22:23.940917
2023-08-30 15:00:50,256:    csr_test:......... PASS -- Time Elapsed:0:22:46.262916
2023-08-30 15:00:50,256:    dfh_walker:....... PASS -- Time Elapsed:0:22:16.544732
2023-08-30 15:00:50,256:    flr:.............. PASS -- Time Elapsed:0:22:21.332386
2023-08-30 15:00:50,256:    fme_csr_access:... PASS -- Time Elapsed:0:17:12.454034
2023-08-30 15:00:50,256:    fme_csr_directed:. PASS -- Time Elapsed:0:17:22.947134
2023-08-30 15:00:50,256:    he_lb_test:....... PASS -- Time Elapsed:0:28:38.962424
2023-08-30 15:00:50,256:    indirect_csr:..... PASS -- Time Elapsed:0:21:15.387478
2023-08-30 15:00:50,256:    pcie_csr_test:.... PASS -- Time Elapsed:0:22:33.838949
2023-08-30 15:00:50,256:    pf_vf_access_test: PASS -- Time Elapsed:0:22:28.704149
2023-08-30 15:00:50,256:    port_gasket_test:. PASS -- Time Elapsed:0:22:32.592301
2023-08-30 15:00:50,256:    remote_stp_test:.. PASS -- Time Elapsed:0:22:01.485914
2023-08-30 15:00:50,256:    uart_csr:......... PASS -- Time Elapsed:0:22:31.848882
2023-08-30 15:00:50,256: Failing Unit Tests: 0/13 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2023-08-30 15:00:50,256: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2023-08-30 15:00:50,256:       Number of Unit test results captured: 13
2023-08-30 15:00:50,256:       Number of Unit test results passing.: 13
2023-08-30 15:00:50,256:       Number of Unit test results failing.:  0
2023-08-30 15:00:50,256:     End Unit regression running at date/time................: 2023-08-30 15:00:50.256725
2023-08-30 15:00:50,256:     Elapsed time for Unit regression run....................: 0:54:48.172625

4. FIM Customization

This section describes how to perform specific customizations of the FIM, and provides step-by-step walkthroughs for these customizations. Each walkthrough can be done independently. These walkthroughs require a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment. The FIM Customization Walkthroughs table lists the walkthroughs that are provided in this section. Some walkthroughs include steps for testing on hardware. Testing on hardware requires that you have a deployment environment set up. Refer to the Getting Started Guide: OFS for Agilex® 7 PCIe Attach FPGAs (F-Series Development Kit (2xF-Tile)) for instructions on setting up a deployment environment.

Table: FIM Customization Walkthroughs

Customization Walkthrough Name
Add a new module to the OFS FIM
Modify and run unit tests for a FIM that has a new module
Hardware test a FIM that has a new module
Debug the FIM with Signal Tap
Compile the FIM in preparation for designing your AFU
Resize the Partial Reconfiguration Region
Modify PCIe Configuration Using OFSS
Modify PCIe Configuration Using IP Presets
Create a Minimal FIM
Migrate to a Different Agilex Device Number
Modify the Ethernet Sub-System to 2x4x10GbE
Modify the Ethernet Sub-System to 3x4x10GbE
Remove the HPS

4.1 Adding a new module to the FIM

This section provides a information for adding a custom module to the FIM, simulating the new design, compiling the new design, implementing and testing the new design on hardware, and debugging the new design on hardware.

4.1.1 Hello FIM Theory of Operation

If you intend to add a new module to the FIM area, then you will need to inform the host software of the new module. The FIM exposes its functionalities to host software through a set of CSR registers that are mapped to an MMIO region (Memory Mapped IO). This set of CSR registers and their operation is described in FIM MMIO Regions.

See FPGA Device Feature List (DFL) Framework Overview for a description of the software process to read and process the linked list of Device Feature Header (DFH) CSRs within a FPGA.

This example will add a hello_fim module to the design. The Hello FIM example adds a simple DFH register and 64bit scratchpad register connected to the Board Peripheral Fabric (BPF) that can be accessed by the Host. You can use this example as the basis for adding a new feature to your FIM.

For the purposes of this example, the hello_fim module instantiation sets the DFH feature ID (FEAT_ID) to 0x100 which is not currently defined. Using an undefined feature ID will result in no driver being used. Normally, a defined feature ID will be used to associate a specific driver with the FPGA module. Refer to the Device Feature List Feature IDs for a list of DFL feature types and IDs. If you are adding a new module to your design, make sure the Type/ID pair does not conflict with existing Type/ID pairs. You may reserve Type/ID pairs by submitting a pull request at the link above.

The Hello FIM design can be verified by Unit Level simulation, Universal Verification Methodology (UVM) simulation, and running in hardware on the fseries-dk card. The process for these are described in this section.

4.1.1.1 Hello FIM Board Peripheral Fabric (BPF)

The Hello FIM module will be connected to the Board Peripheral Fabric (BPF), and will be connected such that it can be mastered by the Host. The BPF is an interconnect generated by Platform Designer. The Hello FIM BPF Interface Diagram figure shows the APF/BPF Master/Slave interactions, as well as the added Hello FIM module.

Figure: Hello FIM BPF Interface Diagram

hello_fim_apf_bpf

The BPF fabric is defined in $OFS_ROOTDIR/src/pd_qsys/fabric/bpf.txt.

We will add the Hello FIM module to an un-used address space in the MMIO region. The Hello FIM MMIO Address Layout table below shows the MMIO region for the Host with the Hello FIM module added at base address 0x16000.

Table: Hello FIM MMIO Address Layout

Offset Feature CSR set
0x00000 FME AFU
0x10000 PCIe Interface
0x12000 QSFP Controller 0
0x13000 QSFP Controller 1
0x14000 HSSI Interface
0x15000 EMIF Interface
0x16000 Hello FIM
4.1.1.2 Hello FIM CSR

The Hello FIM CSR will consist of the three registers shown in the Hello FIM CSR table below. The DFH and Hello FIM ID registers are read-only. The Scratchpad register supports read and write accesses.

Table: Hello FIM CSR

Offset Attribute Description Default Value
0x016000 RO DFH(Device Feature Headers) register 0x30000006a0000100
0x016030 RW Scrachpad register 0x0
0x016038 RO Hello FIM ID register 0x6626070150000034

4.1.2 Walkthrough: Add a new module to the OFS FIM

Perform the following steps to add a new module to the OFS FIM that can be accessed by the Host.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Make hello_fim source directory

    mkdir $OFS_ROOTDIR/src/hello_fim

  4. Create hello_fim_top.sv file.

    touch $OFS_ROOTDIR/src/hello_fim/hello_fim_top.sv

    Copy the following code into hello_fim_top.sv:

    // ***************************************************************************
//                               INTEL CONFIDENTIAL
//
//        Copyright (C) 2023 Intel Corporation All Rights Reserved.
//
// The source code contained or described herein and all  documents related to
// the  source  code  ("Material")  are  owned  by  Intel  Corporation  or its
// suppliers  or  licensors.    Title  to  the  Material  remains  with  Intel
// Corporation or  its suppliers  and licensors.  The Material  contains trade
// secrets  and  proprietary  and  confidential  information  of  Intel or its
// suppliers and licensors.  The Material is protected  by worldwide copyright
// and trade secret laws and treaty provisions. No part of the Material may be
// used,   copied,   reproduced,   modified,   published,   uploaded,  posted,
// transmitted,  distributed,  or  disclosed  in any way without Intel's prior
// express written permission.
//
// No license under any patent,  copyright, trade secret or other intellectual
// property  right  is  granted  to  or  conferred  upon  you by disclosure or
// delivery  of  the  Materials, either expressly, by implication, inducement,
// estoppel or otherwise.  Any license under such intellectual property rights
// must be express and approved by Intel in writing.
//
// You will not, and will not allow any third party to modify, adapt, enhance, 
// disassemble, decompile, reverse engineer, change or create derivative works 
// from the Software except and only to the extent as specifically required by 
// mandatory applicable laws or any applicable third party license terms 
// accompanying the Software.
//
// -----------------------------------------------------------------------------
// Engineer     : 
// Create Date  : September 2023
// Module Name  : hello_fim_top.sv
// Project      : OFS
// -----------------------------------------------------------------------------
//
// Description: 
// This is a simple module that implements DFH registers and 
// AVMM address decoding logic.

module hello_fim_top  #(
   parameter ADDR_WIDTH  = 12, 
   parameter DATA_WIDTH = 64, 
   parameter bit [11:0] FEAT_ID = 12'h001,
   parameter bit [3:0]  FEAT_VER = 4'h1,
   parameter bit [23:0] NEXT_DFH_OFFSET = 24'h1000,
   parameter bit END_OF_LIST = 1'b0
)(
   input  logic    clk,
   input  logic    reset,
// -----------------------------------------------------------
//  AXI4LITE Interface
// -----------------------------------------------------------
   ofs_fim_axi_lite_if.slave   csr_lite_if
);

import ofs_fim_cfg_pkg::*;
import ofs_csr_pkg::*;

//-------------------------------------
// Signals
//-------------------------------------
   logic [ADDR_WIDTH-1:0]              csr_waddr;
   logic [DATA_WIDTH-1:0]              csr_wdata;
   logic [DATA_WIDTH/8-1:0]            csr_wstrb;
   logic                               csr_write;
   logic                               csr_slv_wready;
   csr_access_type_t                   csr_write_type;

   logic [ADDR_WIDTH-1:0]              csr_raddr;
   logic                               csr_read;
   logic                               csr_read_32b;
   logic [DATA_WIDTH-1:0]              csr_readdata;
   logic                               csr_readdata_valid;
   logic [ADDR_WIDTH-1:0]              csr_addr;

   logic [63:0]                        com_csr_writedata;
   logic                               com_csr_read;
   logic                               com_csr_write;
   logic [63:0]                        com_csr_readdata;
   logic                               com_csr_readdatavalid;
   logic [5:0]                         com_csr_address;

// AXI-M CSR interfaces
ofs_fim_axi_mmio_if #(
   .AWID_WIDTH   (ofs_fim_cfg_pkg::MMIO_TID_WIDTH),
   .AWADDR_WIDTH (ADDR_WIDTH),
   .WDATA_WIDTH  (ofs_fim_cfg_pkg::MMIO_DATA_WIDTH),
   .ARID_WIDTH   (ofs_fim_cfg_pkg::MMIO_TID_WIDTH),
   .ARADDR_WIDTH (ADDR_WIDTH),
   .RDATA_WIDTH  (ofs_fim_cfg_pkg::MMIO_DATA_WIDTH)
) csr_if();

// AXI4-lite to AXI-M adapter
axi_lite2mmio axi_lite2mmio (
   .clk       (clk),
   .rst_n     (~reset),
   .lite_if   (csr_lite_if),
   .mmio_if   (csr_if)
);

//---------------------------------
// Map AXI write/read request to CSR write/read,
// and send the write/read response back
//---------------------------------
ofs_fim_axi_csr_slave #(
   .ADDR_WIDTH (ADDR_WIDTH),
   .USE_SLV_READY (1'b1)

   ) csr_slave (
   .csr_if             (csr_if),

   .csr_write          (csr_write),
   .csr_waddr          (csr_waddr),
   .csr_write_type     (csr_write_type),
   .csr_wdata          (csr_wdata),
   .csr_wstrb          (csr_wstrb),
   .csr_slv_wready     (csr_slv_wready),
   .csr_read           (csr_read),
   .csr_raddr          (csr_raddr),
   .csr_read_32b       (csr_read_32b),
   .csr_readdata       (csr_readdata),
   .csr_readdata_valid (csr_readdata_valid)
);

// Address mapping
assign csr_addr             = csr_write ? csr_waddr : csr_raddr;
assign com_csr_address      = csr_addr[5:0];  // byte address
assign csr_slv_wready       = 1'b1 ;
// Write data mapping
assign com_csr_writedata    = csr_wdata;

// Read-Write mapping
always_comb
begin
   com_csr_read             = 1'b0;
   com_csr_write            = 1'b0;
   casez (csr_addr[11:6])
      6'h00 : begin // Common CSR
         com_csr_read       = csr_read;
         com_csr_write      = csr_write;
      end   
      default: begin
         com_csr_read       = 1'b0;
         com_csr_write      = 1'b0;
      end
   endcase
end

// Read data mapping
always_comb begin
   if (com_csr_readdatavalid) begin
      csr_readdata       = com_csr_readdata;
      csr_readdata_valid = 1'b1;
   end
   else begin
      csr_readdata       = '0;
      csr_readdata_valid = 1'b0;
   end
end

hello_fim_com  #(
   .FEAT_ID          (FEAT_ID),
   .FEAT_VER         (FEAT_VER),
   .NEXT_DFH_OFFSET  (NEXT_DFH_OFFSET),
   .END_OF_LIST      (END_OF_LIST)
) hello_fim_com_inst (
   .clk                   (clk                     ),
   .reset                 (reset                   ),
   .writedata             (com_csr_writedata       ),
   .read                  (com_csr_read            ),
   .write                 (com_csr_write           ),
   .byteenable            (4'hF                    ),
   .readdata              (com_csr_readdata        ),
   .readdatavalid         (com_csr_readdatavalid   ),
   .address               (com_csr_address         )
   );
endmodule

  5. Create hello_fim_com.sv file.

    touch $OFS_ROOTDIR/src/hello_fim/hello_fim_com.sv

    Copy the following code to hello_fim_com.sv:

    module hello_fim_com #(
  parameter bit [11:0] FEAT_ID = 12'h001,
  parameter bit [3:0]  FEAT_VER = 4'h1,
  parameter bit [23:0] NEXT_DFH_OFFSET = 24'h1000,
  parameter bit END_OF_LIST = 1'b0
)(
input clk,
input reset,
input [63:0] writedata,
input read,
input write,
input [3:0] byteenable,
output reg [63:0] readdata,
output reg readdatavalid,
input [5:0] address
);

wire reset_n = !reset;  
reg [63:0] rdata_comb;
reg [63:0] scratch_reg;

always @(negedge reset_n ,posedge clk)  
   if (!reset_n) readdata[63:0] <= 64'h0; else readdata[63:0] <= rdata_comb[63:0];

always @(negedge reset_n , posedge clk)
   if (!reset_n) readdatavalid <= 1'b0; else readdatavalid <= read;

wire wr = write;
wire re = read;
wire [5:0] addr = address[5:0];
wire [63:0] din  = writedata [63:0];
wire wr_scratch_reg = wr & (addr[5:0]  == 6'h30)? byteenable[0]:1'b0;

// 64 bit scratch register
always @( negedge  reset_n,  posedge clk)
   if (!reset_n)  begin
      scratch_reg <= 64'h0;
   end
   else begin
   if (wr_scratch_reg) begin 
      scratch_reg <=  din;  
   end
end

always @ (*)
begin
rdata_comb = 64'h0000000000000000;
   if(re) begin
      case (addr)  
        6'h00 : begin
                rdata_comb [11:0]   = FEAT_ID ;  // dfh_feature_id  is reserved or a constant value, a read access gives the reset value
                rdata_comb [15:12]  = FEAT_VER ;  // dfh_feature_rev    is reserved or a constant value, a read access gives the reset value
                rdata_comb [39:16]  = NEXT_DFH_OFFSET ;  // dfh_dfh_ofst is reserved or a constant value, a read access gives the reset value
                rdata_comb [40]     = END_OF_LIST ;        //dfh_end_of_list
                rdata_comb [59:40]  = 20'h00000 ;  // dfh_rsvd1     is reserved or a constant value, a read access gives the reset value
                rdata_comb [63:60]  = 4'h3 ;  // dfh_feat_type  is reserved or a constant value, a read access gives the reset value
        end
        6'h30 : begin
                rdata_comb [63:0]   = scratch_reg; 
        end
        6'h38 : begin
                rdata_comb [63:0]       = 64'h6626_0701_5000_0034;
        end
        default : begin
                rdata_comb = 64'h0000000000000000;
        end
      endcase
   end
end

endmodule

  6. Create hello_fim_design_files.tcl file.

    touch $OFS_ROOTDIR/src/hello_fim/hello_fim_design_files.tcl

    Copy the following code into hello_fim_design_files.tcl

    # Copyright 2023 Intel Corporation.
#
# THIS SOFTWARE MAY CONTAIN PREPRODUCTION CODE AND IS PROVIDED BY THE
# COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Hello FIM Files
#--------------------
set_global_assignment -name SYSTEMVERILOG_FILE $::env(BUILD_ROOT_REL)/src/hello_fim/hello_fim_com.sv
set_global_assignment -name SYSTEMVERILOG_FILE $::env(BUILD_ROOT_REL)/src/hello_fim/hello_fim_top.sv

  7. Modify $OFS_ROOTDIR/syn/board/fseries-dk/syn_top/ofs_top.qsf to include Hello FIM module

    ######################################################
# Verilog Macros
######################################################
.....
set_global_assignment -name VERILOG_MACRO "INCLUDE_HELLO_FIM"     # Includes Hello FIM

  8. Modify $OFS_ROOTDIR/syn/board/fseries-dk/syn_top/ofs_top_sources.tcl to include Hello FIM design files

    ###########################################
# Design Files
###########################################
...
# Subsystems
...
set_global_assignment -name SOURCE_TCL_SCRIPT_FILE $::env(BUILD_ROOT_REL)/src/hello_fim/hello_fim_design_files.tcl

  9. Modify $OFS_ROOTDIR/src/pd_qsys/fabric/fabric_design_files.tcl to include BPF Hello FIM Slave IP.

    #--------------------
# BPF
#--------------------
...
set_global_assignment -name IP_FILE   $::env(BUILD_ROOT_REL)/src/pd_qsys/fabric/ip/bpf/bpf_hello_fim_slv.ip

  10. Modify $OFS_ROOTDIR/src/includes/fabric_width_pkg.sv to add Hello FIM slave information and update EMIF slave next offset.

    localparam bpf_hello_fim_slv_baseaddress = 'h16000;    // New
localparam bpf_hello_fim_slv_address_width = 12;       // New
localparam bpf_emif_slv_next_dfh_offset = 'h1000;      // Old value: 'hB000
localparam bpf_hello_fim_slv_next_dfh_offset = 'hA000; // New
localparam bpf_hello_fim_slv_eol = 'b0;                // New

  11. Modify $OFS_ROOTDIR/src/top/top.sv

    1. Add bpf_hello_fim_slv_if to AXI interfaces

      // AXI4-lite interfaces
...
ofs_fim_axi_lite_if #(.AWADDR_WIDTH(fabric_width_pkg::bpf_hello_fim_slv_address_width), .ARADDR_WIDTH(fabric_width_pkg::bpf_hello_fim_slv_address_width)) bpf_hello_fim_slv_if();

    2. Add Hello FIM instantiation

      //*******************************
// Hello FIM Subsystem
//*******************************

`ifdef INCLUDE_HELLO_FIM
hello_fim_top #(
   .ADDR_WIDTH       (fabric_width_pkg::bpf_hello_fim_slv_address_width),
   .DATA_WIDTH       (64),
   .FEAT_ID          (12'h100),
   .FEAT_VER         (4'h0),
   .NEXT_DFH_OFFSET  (fabric_width_pkg::bpf_hello_fim_slv_next_dfh_offset),
   .END_OF_LIST      (fabric_width_pkg::bpf_hello_fim_slv_eol)
) hello_fim_top_inst (
    .clk (clk_csr),
    .reset(~rst_n_csr),
    .csr_lite_if    (bpf_hello_fim_slv_if)
);
`else
dummy_csr #(
   .FEAT_ID          (12'h100),
   .FEAT_VER         (4'h0),
   .NEXT_DFH_OFFSET  (fabric_width_pkg::bpf_hello_fim_slv_next_dfh_offset),
   .END_OF_LIST      (fabric_width_pkg::bpf_hello_fim_slv_eol)
) hello_fim_dummy (
   .clk         (clk_csr),
   .rst_n       (rst_n_csr),
   .csr_lite_if (bpf_hello_fim_slv_if)
);

`endif

    3. Add interfaces for Hello FIM slv to bpf instantiation

      bpf bpf (
...
  .bpf_hello_fim_slv_awaddr   (bpf_hello_fim_slv_if.awaddr  ),
  .bpf_hello_fim_slv_awprot   (bpf_hello_fim_slv_if.awprot  ),
  .bpf_hello_fim_slv_awvalid  (bpf_hello_fim_slv_if.awvalid ),
  .bpf_hello_fim_slv_awready  (bpf_hello_fim_slv_if.awready ),
  .bpf_hello_fim_slv_wdata    (bpf_hello_fim_slv_if.wdata   ),
  .bpf_hello_fim_slv_wstrb    (bpf_hello_fim_slv_if.wstrb   ),
  .bpf_hello_fim_slv_wvalid   (bpf_hello_fim_slv_if.wvalid  ),
  .bpf_hello_fim_slv_wready   (bpf_hello_fim_slv_if.wready  ),
  .bpf_hello_fim_slv_bresp    (bpf_hello_fim_slv_if.bresp   ),
  .bpf_hello_fim_slv_bvalid   (bpf_hello_fim_slv_if.bvalid  ),
  .bpf_hello_fim_slv_bready   (bpf_hello_fim_slv_if.bready  ),
  .bpf_hello_fim_slv_araddr   (bpf_hello_fim_slv_if.araddr  ),
  .bpf_hello_fim_slv_arprot   (bpf_hello_fim_slv_if.arprot  ),
  .bpf_hello_fim_slv_arvalid  (bpf_hello_fim_slv_if.arvalid ),
  .bpf_hello_fim_slv_arready  (bpf_hello_fim_slv_if.arready ),
  .bpf_hello_fim_slv_rdata    (bpf_hello_fim_slv_if.rdata   ),
  .bpf_hello_fim_slv_rresp    (bpf_hello_fim_slv_if.rresp   ),
  .bpf_hello_fim_slv_rvalid   (bpf_hello_fim_slv_if.rvalid  ),
  .bpf_hello_fim_slv_rready   (bpf_hello_fim_slv_if.rready  ),
...
);

  12. Modify $OFS_ROOTDIR/src/pd_qsys/fabric/bpf.txt to add the hello_fim module as a slave to the apf.

    # NAME   FABRIC      BASEADDRESS    ADDRESS_WIDTH SLAVES
apf         mst     n/a             18            fme,pcie,pmci,qsfp0,qsfp1,emif,hssi,hello_fim
...
hello_fim   slv     0x16000         12            n/a

  13. Execute helper script to generate BPF design files

    cd $OFS_ROOTDIR/src/pd_qsys/fabric/

sh gen_fabrics.sh

  14. Once the script completes, the following new IP is created: $OFS_ROOTDIR/src/pd_qsys/fabric/ip/bpf/bpf_hello_fim_slv.ip.

  15. [OPTIONAL] You may verify the BPF changes have been made correctly by opening bpf.qsys to analyze the BPF.

    cd $OFS_ROOTDIR/src/pd_qsys/fabric

qsys-edit bpf.qsys --quartus-project=$OFS_ROOTDIR/syn/board/fseries-dk/syn_top/ofs_top.qpf

    Find the bpf_hello_fim_slv instance:

    hello_fim_bpf_qsys

  16. Compile the Hello FIM design

    cd $OFS_ROOTDIR

./ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk_hello_fim

4.1.3 Walkthrough: Modify and run unit tests for a FIM that has a new module

Perform the following steps to modify the unit test files to support a FIM that has had a new module added to it.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.
  • This walkthrough uses a FIM design that has had a Hello FIM module added to it. Refer to the Add a new module to the OFS FIM section for step-by-step instructions for creating a Hello FIM design. You do not need to compile the design in order to simulate.

Steps:

  1. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  2. Modify $OFS_ROOTDIR/sim/unit_test/dfh_walker/test_csr_defs.sv

    1. Add HELLO_FIM_IDX entry to t_dfh_idx enumeration.

      ...
typedef enum {
    FME_DFH_IDX,
    THERM_MNGM_DFH_IDX,
    GLBL_PERF_DFH_IDX,
    GLBL_ERROR_DFH_IDX,
    QSFP0_DFH_IDX,
    QSFP1_DFH_IDX,
    HSSI_DFH_IDX,
    EMIF_DFH_IDX,
    HELLO_FIM_DFH_IDX,  // New
    PMCI_DFH_IDX,
    ST2MM_DFH_IDX,
    VUART_DFH_IDX,
    PG_PR_DFH_IDX,
    PG_PORT_DFH_IDX,
    PG_USER_CLK_DFH_IDX,
    PG_REMOTE_STP_DFH_IDX,
    AFU_ERR_DFH_IDX,
    MAX_DFH_IDX
} t_dfh_idx;
...

    2. Add HELLO_FIM_DFH to get_dfh_names function.

      ...
function automatic dfh_name[MAX_DFH_IDX-1:0] get_dfh_names();
...
  dfh_names[PMCI_DFH_IDX]        = "PMCI_DFH";
  dfh_names[HELLO_FIM_DFH_IDX]   = "HELLO_FIM_DFH";  // New
  dfh_names[ST2MM_DFH_IDX]       = "ST2MM_DFH";
...
return dfh_names;
...

    3. Add expected DFH value for Hello FIM to the get_dfh_values function.

      ...
function automatic [MAX_DFH_IDX-1:0][63:0] get_dfh_values();
...
  dfh_values[PMCI_DFH_IDX]       = 64'h3_00000_xxxxxx_1012;
  dfh_values[PMCI_DFH_IDX][39:16] = fabric_width_pkg::bpf_pmci_slv_next_dfh_offset;

  dfh_values[HELLO_FIM_DFH_IDX]  = 64'h3_00000_xxxxxx_0100;  // New
  dfh_values[HELLO_FIM_DFH_IDX][39:16] = fabric_width_pkg::bpf_hello_fim_slv_next_dfh_offset; // New

  dfh_values[ST2MM_DFH_IDX]      = 64'h3_00000_xxxxxx_0014;
  dfh_values[ST2MM_DFH_IDX][39:16] = fabric_width_pkg::apf_st2mm_slv_next_dfh_offset;
...
return dfh_values;
...

  3. Generate simulation files

    cd $OFS_ROOTDIR/ofs-common/scripts/common/sim

./gen_sim_files.sh --ofss=$OFS_ROOTDIR/tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk

  4. Run DFH Walker Simulation 

    cd $OFS_ROOTDIR/ofs-common/scripts/common/sim

sh run_sim.sh TEST=dfh_walker

  5. Verify that the test passes, and that the output shows the Hello FIM in the DFH sequence

    ********************************************
 Running TEST(0) : test_dfh_walking
********************************************
...

READ64: address=0x00015000 bar=0 vf_active=0 pfn=0 vfn=0

   ** Sending TLP packets **
   ** Waiting for ack **
   READDATA: 0x3000000010001009

EMIF_DFH
   Address   (0x15000)
   DFH value (0x3000000010001009)

READ64: address=0x00016000 bar=0 vf_active=0 pfn=0 vfn=0

   ** Sending TLP packets **
   ** Waiting for ack **
   READDATA: 0x30000000a0000100

HELLO_FIM_DFH
   Address   (0x16000)
   DFH value (0x30000000a0000100)

READ64: address=0x00020000 bar=0 vf_active=0 pfn=0 vfn=0

   ** Sending TLP packets **
   ** Waiting for ack **
   READDATA: 0x3000000200001012

PMCI_DFH
   Address   (0x20000)
   DFH value (0x3000000200001012)

...

Test status: OK

********************
  Test summary
********************
   test_dfh_walking (id=0) - pass
Test passed!
Assertion count: 0
$finish called from file "/home/ofs-agx7-pcie-attach/sim/unit_test/scripts/../../bfm/rp_bfm_simple/tester.sv", line 210.
$finish at simulation time         356791250000
           V C S   S i m u l a t i o n   R e p o r t
Time: 356791250000 fs
CPU Time:     61.560 seconds;       Data structure size:  47.4Mb
Tue Aug 15 16:29:45 2023
run_sim.sh: USER_DEFINED_SIM_OPTIONS +vcs -l ./transcript
run_sim.sh: run_sim.sh DONE!

4.1.4 Walkthrough: Hardware test a FIM that has a new module

Perform the following steps to program and hardware test a FIM that has had a new module added to it.

Pre-requisites:

  • This walkthrough uses a FIM design that has been generated with a Hello FIM module added to it. Refer to the Add a new module to the OFS FIM section for step-by-step instructions for generating a Hello FIM design.

Steps:

  1. [OPTIONAL] In the work directory where the FIM was compiled, determine the PR Interface ID of your design. You can use this value at the end of the walkthrough to verify that the design has been configured to the FPGA.

    cd $OFS_ROOTDIR/<work_directory>/syn/board/fseries-dk/syn_top/

cat fme-ifc-id.txt

    Example output:

    65882210-d7d4-5fb0-973d-76989a77be02

  2. Switch to your deployment environment.

  3. Program the FPGA with the Hello FIM image. Refer to the Program the FPGA via JTAG Section for step-by-step programming instructions.

  4. Run fpgainfo to determine the PCIe B:D.F of your board, and to verify the PR Interface ID matches the ID you found in Step 1.

    fpgainfo fme

    Example output:

    Intel Acceleration Development Platform N6001
board_n6000.c:306:read_bmcfw_version() **ERROR** : Failed to get read object
board_n6000.c:482:print_board_info() **ERROR** : Failed to read bmc version
board_n6000.c:332:read_max10fw_version() **ERROR** : Failed to get read object
board_n6000.c:488:print_board_info() **ERROR** : Failed to read max10 version
Board Management Controller NIOS FW version:
Board Management Controller Build version:
//****** FME ******//
Interface                        : DFL
Object Id                        : 0xEF00001
PCIe s:b:d.f                     : 0000:B1:00.0
Vendor Id                        : 0x8086
Device Id                        : 0xBCCE
SubVendor Id                     : 0x8086
SubDevice Id                     : 0x1771
Socket Id                        : 0x00
Ports Num                        : 01
Bitstream Id                     : 360571653789875893 
Bitstream Version                : 5.0.1
Pr Interface Id                  : 65882210-d7d4-5fb0-973d-76989a77be02
Boot Page                        : N/A

    Note: The errors related to the BMC are the result of the OFS BMC not being present on the fseries-dk design. These will be removed in a future release.

  5. Initialize opae.io

    sudo opae.io init -d <B:D.F>

    For example:

    sudo opae.io init -d b1:00.0

  6. Run DFH walker. Note the value read back from offset 0x16000 indicates the DFH ID is 0x100 which matches the Hello FIM module.

    sudo opae.io walk -d <B:D.F>

    For example:

    sudo opae.io walk -d b1:00.0

    Example output:

    ...
offset: 0x15000, value: 0x3000000010001009
    dfh: id = 0x9, rev = 0x1, next = 0x1000, eol = 0x0, reserved = 0x0, feature_type = 0x3
offset: 0x16000, value: 0x30000000a0000100
    dfh: id = 0x100, rev = 0x0, next = 0xa000, eol = 0x0, reserved = 0x0, feature_type = 0x3
offset: 0x20000, value: 0x3000000200001012
    dfh: id = 0x12, rev = 0x1, next = 0x20000, eol = 0x0, reserved = 0x0, feature_type = 0x3
...

  7. Read all of the registers in the Hello FIM module

    1. Read the DFH Register

      opae.io -d b1:00.0 -r 0 peek 0x16000

      Example Output:

      0x30000006a0000100

    2. Read the Scratchpad Register

      opae.io -d b1:00.0 -r 0 peek 0x16030

      Example Output:

      0x0

    3. Read the ID Register

      opae.io -d b1:00.0 -r 0 peek 0x16038

      Example Output:

      0x6626070150000034

  8. Verify the scratchpad register at 0x16030 by writing and reading back from it.

    1. Write to Scratchpad register

      opae.io -d b1:00.0 -r 0 poke 0x16030 0x123456789abcdef

    2. Read from Scratchpad register

      opae.io -d b1:00.0 -r 0 peek 0x16030

      Expected output:

      0x123456789abcdef

    3. Write to Scratchpad register

      opae.io -d b1:00.0 -r 0 poke 0x16030 0xfedcba9876543210

    4. Read from Scratchpad register

      opae.io -d b1:00.0 -r 0 peek 0x16030

      Expected output:

      0xfedcba9876543210

  9. Release the opae.io tool

    opae.io release -d b1:00.0

  10. Confirm the driver has been set back to dfl-pci

    opae.io ls

    Example output:

    [0000:b1:00.0] (0x8086:0xbcce 0x8086:0x1771) Intel Acceleration Development Platform N6001 (Driver: dfl-pci)

4.1.5 Walkthrough: Debug the FIM with Signal Tap

The following steps guide you through the process of adding a Signal Tap instance to your design. The added Signal Tap instance provides hardware to capture the desired internal signals and connect the stored trace information via JTAG. Please be aware that the added Signal Tap hardware will consume FPGA resources and may require additional floorplanning steps to accommodate these resources. Some areas of the FIM use logic lock regions and these regions may need to be re-sized.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.
  • This walkthrough uses a FIM design that has had a Hello FIM module added to it. Refer to the Add a new module to the OFS FIM section for step-by-step instructions for creating a Hello FIM design. You do not need to compile the design.

Perform the following steps in your development environment:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Synthesize the design using the -e build script option. You may skip this step if you are using a pre-synthesized design.

    cd $OFS_ROOTDIR

./ofs-common/scripts/common/syn/build_top.sh -e --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_hello_fim_with_stp

  4. Open the design in Quartus. The Compilation Dashboard should show that the Analysis & Synthesis step has completed.

    quartus $OFS_ROOTDIR/work_hello_fim_with_stp/syn/board/fseries-dk/syn_top/ofs_top.qpf

    synthesis_compilation_dashboard

  5. Open Tools -> Signal Tap Logic Analyzer

    tools_signal_tap

    1. Select the Default template and click Create

    2. Assign the clock for sampling the Signal Tap instrumented signals of interest. Note that the clock selected should correspond to the signals you want to view for best trace fidelity. Different clocks can be used, however, there maybe issues with trace inaccuracy due to sampling time differences. This example instruments the hello_fim_top module previously intetegrated into the FIM. If unfamiliar with code, it is helpful to use the Quartus Project Navigator to find the block of interest and open the design instance for review.

      1. In the Signal Configuration -> Clock box of the Signal Tap Logic Analyzer window, click the "..." button

      2. In the Node Finder tool that opens, type hello_fim_top_inst|clock into the Named field, then click Search. Select the clk signal from the Matching Nodes box and click the ">" button to move it to the Nodes Found box. Click OK to close the Node Finder dialog.

    3. Update the sample depth and other Signal Tap settings as needed for your debugging criteria.

    4. In the Signal Tap GUI add the nodes to be instrumented by double-clicking on the "Double-click to add nodes" legend.

    5. This brings up the Node Finder to add the signals to be traced. In this example we will monitor the memory mapped interface to the Hello FIM. Select the signals that appear from the search patterns hello_fim_top_inst|reset and hello_fim_top_inst|csr_lite_if\*. Click Insert and close the Node Finder dialog.

    6. To provide a unique name for your Signal Tap instance, select "auto_signaltap_0", right-click, and select Rename Instance (F2). Provide a descriptive name for your instance, for example, stp_for_hello_fim.

    7. Save the newly created Signal Tap file, in the $OFS_ROOTDIR/work_hello_fim_with_stp/syn/board/fseries-dk/syn_top/ directory, and give it the same name as the instance. Ensure that the Add file to current project checkbox is ticked.

    8. In the dialog that pops up, click "Yes" to add the newly created Signal Tap file to the project settings files.

      This will aurtomatically add the following lines to $OFS_ROOTDIR/work_hello_fim_with_stp/syn/board/fseries-dk/syn_top/ofs_top.qsf:

      set_global_assignment -name ENABLE_SIGNALTAP ON
set_global_assignment -name USE_SIGNALTAP_FILE stp_for_hello_fim.stp
set_global_assignment -name SIGNALTAP_FILE stp_for_hello_fim.stp

  6. Close all Quartus GUIs.

  7. Compile the project with the Signal Tap file added to the project. Use the -k switch to perform the compilation using the files in a specified working directory and not the original ones from the cloned repository. 

    ./ofs-common/scripts/common/syn/build_top.sh -p -k --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_hello_fim_with_stp

    Alternatively, you can copy the ofs_top.qsf and stp_for_hello_fim.stp files from the Hello FIM with STP work directory to replace the original files in the cloned OFS repository. In this scenario, all further FIM compilation projects will include the Signal Tap instance integrated into the design. Execute the following commands for this alternative flow:

    Copy the modified file work_hello_fim_with_stp/syn/board/fseries-dk/syn_top/ofs_top.qsf to the source OFS repository, into syn/board/fseries-dk/syn_top/.

    cd $OFS_ROOTDIR/work_hello_fim_with_stp/syn/board/fseries-dk/syn_top

cp ofs_top.qsf $OFS_ROOTDIR/syn/board/fseries-dk/syn_top

cp stp_for_hello_fim.stp $OFS_ROOTDIR/syn/board/fseries-dk/syn_top

    Compile the FIM to create a new work directory.

    cd $OFS_ROOTDIR

./ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_hello_fim_with_stp_src_repo

  8. Ensure that the compile completes successfully and meets timing:

    ***********************************
***
***        OFS_PROJECT: n6001
***        OFS_BOARD: fseries-dk
***        Q_PROJECT:  ofs_top
***        Q_REVISION: ofs_top
***        SEED: 6
***        Build Complete
***        Timing Passed!
***
***********************************

  9. Set up a JTAG connection to the fseries-dk. Refer to the Set up JTAG section for step-by-step instructions.

  10. Copy the ofs_top.sof and stp_for_hello_fim.stp files to the machine which is connected to the fseries-dk via JTAG.

  11. From the JTAG connected machine, program the $OFS_ROOTDIR/work_hello_fim_with_stp/syn/board/fseries-dk/syn_top/output_files/ofs_top.sof image to the fseries-dk FPGA. Refer to the Program the FPGA via JTAG section for step-by-step programming instructions.

  12. Open the Quartus Signal Tap GUI

    $QUARTUS_ROOTDIR/bin/quartus_stpw

  13. In the Signal Tap Logic Analyzer window, select File -> Open, and choose the stp_for_hello_fim.stp file.

  14. In the right pane of the Signal Tap GUI, in the Hardware: selection box select the cable for the fseries-dk. In the Device: selection box select the Agilex device.

  15. If the Agilex Device is not displayed in the Device: list, click the 'Scan Chain' button to re-scan the JTAG device chain.

  16. Create the trigger conditions. In this example, we will capture data on a rising edge of the Read Address Valid signal.

  17. Start analysis by selecting the 'stp_for_hello_fim' instance and pressing 'F5' or clicking the Run Analysis icon in the toolbar. You should see a green message indicating the Acquisition is in progress. Then, move to the Data Tab to observe the signals captured.

  18. To generate traffic in the csr_lite_if signals of the Hello FIM module, walk the DFH list or peek/poke the Hello FIM registers.

    opae.io init -d 0000:b1:00.0
opae.io walk -d 0000:b1:00.0
opae.io release -d 0000:b1:00.0

    The signals should be captured on the rising edge of arvalid in this example. Zoom in to get a better view of the signals.

4.2 Preparing FIM for AFU Development

To save area, the default Host Excercisers in the FIM can be replaced by a "he_null" blocks. There are a few things to note:

  • "he_null" is a minimal block with registers that responds to PCIe MMIO request. MMIO responses are required to keep PCIe alive (end points enabled in PCIe-SS needs service downstream requests).
  • If an exerciser with other I/O connections such as "he_mem" or "he_hssi" is replaced, then then those I/O ports are simply tied off.
  • The options supported are null_he_lb, null_he_hssi, null_he_mem and null_he_mem_tg. Any combination, order or all can be enabled at the same time.
  • Finer grain control is provided for you to, for example, turn off only the exercisers in the Static Region in order to save area.

4.2.1 Walkthrough: Compile the FIM in preparation for designing your AFU

Perform the following steps to compile a FIM for where the exercisers are removed and replaced with an he_null module while keeping the PF/VF multiplexor connections.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Compile the FIM with the HE_NULL compile options

    cd $OFS_ROOTDIR

./ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk.ofss fseries-dk:null_he_lb,null_he_hssi,null_he_mem,null_he_mem_tg work_fseries-dk

4.3 Partial Reconfiguration Region

To take advantage of the available resources in the Agilex® 7 FPGA for an AFU design, you can adjust the size of the AFU PR partition. An example reason for the changing the size of PR region is if you add more logic to the FIM region, then you may need to adjust the PR region to fit the additional logic into the static region. Similarly, if you reduce logic in the FIM region, then you can adjust the PR region to provide more logic resources for the AFU.

After the compilation of the FIM, the resources usage broken down by partitions as reported in the following file:

$OFS_ROOTDIR/<WORDK_DIRECTORY>/syn/board/fseries-dk/syn_top/output_files/ofs_top.fit.rpt

An example report of the resources usage by partitions defined for the FIM is shown as follows:

+------------------------------------------------------------------------------------------+
; Logic Lock Region Constraints                                                            ;
+--------------------------------------+-------------------------+-------------------------+
; Name                                 ; Place Region Constraint ; Route Region Constraint ;
+--------------------------------------+-------------------------+-------------------------+
; afu_top|port_gasket|pr_slot|afu_main ; (90, 40) to (350, 220)  ; (0, 0) to (385, 329)    ;
+--------------------------------------+-------------------------+-------------------------+


+----------------------------------------------------------------------------------------------+
; Logic Lock Region Usage Summary                                                              ;
+-------------------------------------------------------+--------------------------------------+
; Statistic                                             ; afu_top|port_gasket|pr_slot|afu_main ;
+-------------------------------------------------------+--------------------------------------+
; ALMs needed [=A-B+C]                                  ; 48011.2 / 351140 ( 13 % )            ;
;     [A] ALMs used in final placement                  ; 53324.4 / 351140 ( 15 % )            ;
;     [B] Estimate of ALMs recoverable by dense packing ; 5452.3 / 351140 ( 1 % )              ;
;     [C] Estimate of ALMs unavailable                  ; 139.0 / 351140 ( < 1 % )             ;
; ALMs used for memory                                  ; 450.0                                ;
; Combinational ALUTs                                   ; 67166                                ;
; Dedicated Logic Registers                             ; 87533 / 1404560 ( 6 % )              ;
; I/O Registers                                         ; 0                                    ;
; Block Memory Bits                                     ; 1737568                              ;
; M20Ks                                                 ; 137 / 5049 ( 2 % )                   ;
; DSP Blocks needed [=A-B]                              ; 0 / 3439 ( 0 % )                     ;
;     [A] DSP Blocks used in final placement            ; 0 / 3439 ( 0 % )                     ;
;     [B] Estimate of DSPs recoverable by dense merging ; 0 / 3439 ( 0 % )                     ;
; Pins                                                  ; 0                                    ;
; IOPLLs                                                ; 0                                    ;
;                                                       ;                                      ;
; Region Placement                                      ; (90, 40) to (350, 220)               ;
+-------------------------------------------------------+--------------------------------------+

In this case, the default size for the afu_top|port_gasket|pr_slot|afu_main PR partition is large enough to hold the logic of the default AFU, which is mainly occupied by the Host Exercisers. However, larger designs might require additional resources.

4.3.1 Walkthrough: Resize the Partial Reconfiguration Region

Perform the following steps to first analyze the PR logic lock regions in a default FIM design, then resize the PR region:

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. The OFS flow provides the TCL file $OFS_ROOTDIR/syn/board/fseries-dk/setup/pr_assignments.tcl which defines the PR partition where the AFU is allocated. Each region is a rectangle defined by the origin coordinate (X0, Y0) and the top right corner coordinate (X1, Y1).

    #####################################################
# Main PR Partition -- green_region
#####################################################
set_instance_assignment -name PARTITION green_region -to afu_top|port_gasket|pr_slot|afu_main
set_instance_assignment -name CORE_ONLY_PLACE_REGION ON -to afu_top|port_gasket|pr_slot|afu_main
set_instance_assignment -name RESERVE_PLACE_REGION ON -to afu_top|port_gasket|pr_slot|afu_main
set_instance_assignment -name PARTIAL_RECONFIGURATION_PARTITION ON -to afu_top|port_gasket|pr_slot|afu_main


set_instance_assignment -name PLACE_REGION "X90 Y40 X350 Y220" -to afu_top|port_gasket|pr_slot|afu_main
set_instance_assignment -name ROUTE_REGION "X0 Y0 X385 Y329" -to afu_top|port_gasket|pr_slot|afu_main

  4. [OPTIONAL] Use Quartus Chip Planner to visualize the default PR region allocation.

    1. Run the setup stage of the build script to create a work directory.

      cd $OFS_ROOTDIR

./ofs-common/scripts/common/syn/build_top.sh --stage setup --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk_resize_pr

    2. Open the project in the Quartus GUI

      quartus $OFS_ROOTDIR/work_fseries-dk_resize_pr/syn/board/fseries-dk/syn_top/ofs_top.qpf

    3. In the Compilation Dashboard, click the arrow next to Compile Design to start the compilation.

    4. Once compilation is complete, click Tools -> Chip Planner to open the Chip Planner.

    5. Analyze the regions shown. Note that the regions are made of rectangles described by an origin coordinate, region height, and region width. If you are modifying the regions, you will need to identify the coordinates of your desired region.

    6. Close the Quartus GUI.

  5. Make changes to the partial reconfiguraton region in the $OFS_ROOTDIR/syn/board/fseries-dk/setup/pr_assignments.tcl file. You can modify the size and location of existing lock regions or add new ones and assign them to the AFU PR partition.

  6. Recompile your FIM and create the PR relocatable build tree using the following commands.

    cd $OFS_ROOTDIR    

ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk_resize_pr

  7. Analyze the resource utilization report $OFS_ROOTDIR/work_fseries-dk/syn/board/fseries-dk/syn_top/output_files/ofs_top.fit.rpt produced after recompiling the FIM.

  8. Perform further modification to the PR regions until the results are satisfactory. Make sure timing constraints are met.

For more information on how to optimize the floor plan of your Partial Reconfiguration design refer to the following online documentation.

4.4 PCIe Configuration

The PCIe sub-system IP and PF/VF MUX can be modified either using the OFSS flow or the IP Presets flow. The OFSS flow supports a subset of all available PCIe Sub-system settings, while the IP Preset flow can make any available PCIe Sub-system settings change. With PCIe-SS modifcations related to the PFs and VFs, the PF/VF MUX logic is automatically configured based on the PCIe-SS configuration. The sections below describe each flow.

4.4.1 PF/VF MUX Configuration

The default PF/VF MUX configuration for OFS PCIe Attach FIM for the fseries-dk can support up to 8 PFs and 2000 VFs distributed accross all PFs.

For reference FIM configurations, 0 VFs on PF0 is not supported. This is because the PR region cannot be left unconnected. A NULL AFU may need to be instantiated in this special case. PFs must be consecutive. the PF/VF Limitations table describes the supported number of PFs and VFs.

Table: PF/VF Limitations

Parameter Value
Min # of PFs 1 (on PF0)
Max # of PFs 8
Min # of VFs 1 on PF0
Max # of VFs 2000 distributed across all PFs

New PF or VF instances will automatically have a null_afu module instantiated and connected to the new PF or VF.

4.4.2 PCIe-SS Configuration Registers

The PCIe-SS configuration registers contain the Vendor, Device and Subsystem Vendor ID registers which are used in PCIe add-in cards to uniquely identify the card for assignment to software drivers. OFS has these registers set with Intel values for out of the box usage. If you are using OFS for a PCIe add in card that your company manufactures, then update the PCIe Subsytem Subsystem ID and Vendor ID registers as described below and change OPAE provided software code to properly operate with your company's register values.

The Vendor ID is assigned to your company by the PCI-SIG (Special Interest Group). The PCI-SIG is the only body officially licensed to give out IDs. You must be a member of PCI-SIG to request your own ID. Information about joining PCI-SIG is available here: PCI-SIG. You select the Subsystem Device ID for your PCIe add in card.

4.4.3 PCIe Configuration Using OFSS

The general flow for using OFSS to modify the PCIe Sub-system and PF/VF MUX is as follows:

  1. Create or modify a PCIe OFSS file with the desired PCIe configuration.
  2. Call this PCIe OFSS file when running the FIM build script.

The PCIe IP OFSS File Options table lists all of the configuration options supported by the OFSS flow. Any other customizations to the PCIe sub-system must be done with the IP Presets Flow.

Table: PCIe IP OFSS File Options

Section Parameter Options Default Description
[ip] type pcie N/A Specifies that this OFSS file configures the PCIe-SS
[settings] output_name pcie_ss N/A Specifies the output name of the PCIe-SS IP
preset String N/A OPTIONAL - Specifies the name of a PCIe-SS IP presets file to use when building the FIM. When used, a presets file will take priority over any other parameters set in this OFSS file.
[pf*] num_vfs Integer 0 Specifies the number of Virtual Functions in the current PF
bar0_address_width Integer 12
bar4_address_width Integer 14
vf_bar0_address_width Integer 12
ats_cap_enable 0 | 1 0
vf_ats_cap_enable 0 | 1 0
prs_ext_cap_enable 0 | 1 0
pasid_cap_enable 0 | 1 0
pci_type0_vendor_id 32'h Value 0x00008086
pci_type0_device_id 32'h Value 0x0000bcce
revision_id 32'h Value 0x00000001
class_code 32'h Value 0x00120000
subsys_vendor_id 32'h Value 0x00008086
subsys_dev_id 32'h Value 0x00001771
sriov_vf_device_id 32'h Value 0x0000bccf
exvf_subsysid 32'h Value 0x00001771
4.4.3.1 Walkthrough: Modify PCIe Configuration Using OFSS

Perform the following steps to use OFSS files to configure the PCIe Sub-system and PF/VF MUX. In this example, we will add a PF with 2 VFs to the default configuration.

Pre-requisites:

  • This walkthrough requires a development environment to build the FIM. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. View the default OFS PCIe Attach FIM for the fseries-dk PF/VF configuration in the the $OFS_ROOTDIR/tools/ofss_config/pcie/pcie_host.ofss file.

    [ip]
type = pcie

[settings]
output_name = pcie_ss

[pf0]
num_vfs = 3
bar0_address_width = 20
vf_bar0_address_width = 20

[pf1]

[pf2]
bar0_address_width = 18

[pf3]

[pf4]

  4. Create a new PCIe OFSS file from the existing pcie_host.ofss file

    cp $OFS_ROOTDIR/tools/ofss_config/pcie/pcie_host.ofss $OFS_ROOTDIR/tools/ofss_config/pcie/pcie_pfvf_mod.ofss

  5. Configure the new pcie_pfvf_mod.ofss with your desired PCIe settings. In this example we will add PF5 with 2 VFs.

    [ip]
type = pcie

[settings]
output_name = pcie_ss

[pf0]
num_vfs = 3
bar0_address_width = 20
vf_bar0_address_width = 20

[pf1]

[pf2]
bar0_address_width = 18

[pf3]

[pf4]

[pf5]
num_vfs = 2

  6. Edit the $OFS_ROOTDIR/tools/ofss_config/fseries-dk.ofss file to use the new PCIe configuration file pcie_pfvf_mod.ofss

    [include]
"$OFS_ROOTDIR"/tools/ofss_config/fseries-dk_base.ofss
"$OFS_ROOTDIR"/tools/ofss_config/pcie/pcie_pfvf_mod.ofss
"$OFS_ROOTDIR"/tools/ofss_config/iopll/iopll.ofss
"$OFS_ROOTDIR"/tools/ofss_config/memory/memory_ftile.ofss

  7. Compile the FIM. 

    cd $OFS_ROOTDIR

./ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk_pfvf_mod

  8. Copy the resulting $OFS_ROOTDIR/work_fseries-dk_pfvf_mod/syn/board/fseries-dk/syn_top/output_files/ofs_top.sof image to your deployment environmenment.

  9. Switch to your deployment environment.

  10. Program the ofs_top.sof image to the fseries-dk FPGA. Refer to the Program the FPGA via JTAG Section for step-by-step programming instructions.

  11. Verify the number of VFs on the newly added PF5. In this example, we defined 2 VFs on PF5 in Step 5.

    sudo lspci -vvv -s b1:00.5 | grep VF

    Example output:

    Initial VFs: 2, Total VFs: 2, Number of VFs: 0, Function Dependency Link: 05
VF offset: 4, stride: 1, Device ID: bccf
VF Migration: offset: 00000000, BIR: 0

  12. Verify communication with the newly added PF5. New PF/VF are seamlessly connected to their own CSR stub, which can be read at DFH Offset 0x0. You can bind to the function and perform opae.io peek commands to read from the stub CSR. Similarly, perform opae.io poke commands to write into the stub CSRs. Use this mechanism to verify that the new PF/VF Mux configuration allows to write and read back values from the stub CSRs.

    The GUID for every new PF/VF CSR stub is the same.

    * NULL_GUID_L           = 64'haa31f54a3e403501
* NULL_GUID_H           = 64'h3e7b60a0df2d4850

    1. Initialize the driver on PF5

      sudo opae.io init -d b1:00.5

    2. Read the GUID for the PF5 CSR stub.

      sudo opae.io -d b1:00.5 -r 0 peek 0x8
sudo opae.io -d b1:00.5 -r 0 peek 0x10

      Example output:

      0xaa31f54a3e403501
0x3e7b60a0df2d4850

4.4.4 PCIe Configuration Using IP Presets

The general flow for using IP Presets to modify he PCIe Sub-system is as follows:

  1. [OPTIONAL] Create a work directory using OFSS files if you wish to use OFSS configuration settings.
  2. Open the PCIe-SS IP and make desired modifications.
  3. Create an IP Presets file.
  4. Create an PCIe OFSS file that uses the IP Presets file.
  5. Build the FIM with the PCIe OFSS file from Step 4.
4.4.4.1 Walkthrough: Modify PCIe Configuration Using IP Presets

Perform the following steps to use an IP Preset file to configure the PCIe Sub-system and PF/VF MUX. In this example, we will change the Revision ID of PF0. While this modification can be done with the OFSS flow, this walkthrough is intended to show the procedure for making any PCIe configuration change using IP presets.

Pre-requisites:

  • This walkthrough requires a development environment to build the FIM. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Run the setup stage of the build script using your desired OFSS configration to create a working directory for the fseries-dk design.

    ./ofs-common/scripts/common/syn/build_top.sh --stage setup --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk

  4. Open the PCIe-SS in the work directory using Quartus Parameter Editor.

    qsys-edit $OFS_ROOTDIR/work_fseries-dk/ipss/pcie/qip/pcie_ss.ip

  5. In the IP Parameter Editor window, scroll down and select the PCIe Interfaces Port Settings -> Port 0 -> PCIe0 Device Identification Registers -> PCIe0 PF0 IDs tab. Modify the settings as desired. In this case, we are changing the Revision ID to 0x00000002. You may make any desired modifications.

    pcie_ss_mod

  6. Once you are satisfied with your modifcations, create a new IP Preset file.

    1. click New... in the Presets window.

    2. In the New Preset window, set a unique Name for the preset; for example, fseries-dk-rev2.

    3. Click the ... button to set the save location for the IP Preset file to $OFS_ROOTDIR/ipss/pcie/presets. Set the File Name to match the name selected in Step 9. Click OK.

    4. In the New Preset window, click Save. Click No when prompted to add the file to the IP search path.

  7. Close IP Parameter Editor without saving or generating HDL.

  8. Create a new PCIe OFSS file in the $OFS_ROOTDIR/tools/ofss_config/pcie directory. For example:

    touch $OFS_ROOTDIR/tools/ofss_config/pcie/pcie_host_mod_preset.ofss

    Insert the following into the OFSS file to specify the IP Preset file created in Step 6. 

    [ip]
type = pcie

[settings]
output_name = pcie_ss
preset = fseries-dk-rev2

  9. Edit the $OFS_ROOTDIR/tools/ofss_config/fseries-dk.ofss file to call new OFSS file created in the previous step.

    [include] "$OFS_ROOTDIR"/tools/ofss_config/fseries-dk_base.ofss "$OFS_ROOTDIR"/tools/ofss_config/pcie/pcie_host_mod_preset.ofss "$OFS_ROOTDIR"/tools/ofss_config/iopll/iopll.ofss "$OFS_ROOTDIR"/tools/ofss_config/memory/memory_ftile.ofss

  10. Compile the design with the modified fseries-dk.ofss file.

    cd $OFS_ROOTDIR

./ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk_pcie_mod

  11. Copy the resulting $OFS_ROOTDIR/work_fseries-dk_pcie_mod/syn/board/fseries-dk/syn_top/output_files/ofs_top.sof image to your deployment environmenment.

  12. Switch to your deployment environment.

  13. Program the ofs_top.sof image to the fseries-dk FPGA. Refer to the Program the FPGA via JTAG Section for step-by-step programming instructions.

  14. Use lspci to verify that the PCIe changes have been implemented. In this example, the Rev for PF0 is 02.

    lspci -nvmms 98:00.0

    Example output:

    Slot:   98:00.0
Class:  1200
Vendor: 8086
Device: bcce
SVendor:        8086
SDevice:        1771
PhySlot:        1-1
Rev:    02
NUMANode:       1
IOMMUGroup:     8

4.5 Minimal FIM

In a minimal FIM, the exercisers are removed. This minimal FIM is useful for HDL applications.

4.5.1 Walkthrough: Create a Minimal FIM

Perform the following steps to create a Minimal FIM.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Create a new platform OFSS file that will use a 1PF/1VF PCIe configuration.

    cp $OFS_ROOTDIR/tools/ofss_config/fseries-dk.ofss $OFS_ROOTDIR/tools/ofss_config/fseries-dk_1pf_1vf.ofss

  4. Edit the $OFS_ROOTDIR/tools/ofss_config/fseries-dk_1pf_1vf.ofss file to use the 1PF/1VF PCIe configuration file pcie_1pf_1vf.ofss

    [include]
"$OFS_ROOTDIR"/tools/ofss_config/fseries-dk_base.ofss
"$OFS_ROOTDIR"/tools/ofss_config/pcie/pcie_1pf_1vf.ofss
"$OFS_ROOTDIR"/tools/ofss_config/iopll/iopll.ofss
"$OFS_ROOTDIR"/tools/ofss_config/memory/memory_ftile.ofss

  5. Compile the FIM with Null HEs compile option, the No HSSI compile option, and 1PF/1VF configuration OFSS file.

    cd $OFS_ROOTDIR

./ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk_1pf_1vf.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk:null_he_lb,null_he_hssi,null_he_mem,null_he_mem_tg,no_hssi work_fseries-dk_minimal_fim

  6. Review the $OFS_ROOTDIR/work_fseries-dk_minimal_fim/syn/board/fseries-dk/syn_top/output_files/ofs_top.fit.rpt utilization report to see the utilization statistics for the Minimal fim. Refer to Appendix A: Resource Utilization Tables Table A-4 for the expected utilization for this Minimal FIM.

  7. Copy the resulting $OFS_ROOTDIR/work_fseries-dk_minimal_fim/syn/board/fseries-dk/syn_top/output_files/ofs_top.sof image to your deployment environmenment.

  8. Switch to your deployment environment, if different than your development environment.

  9. Program the ofs_top.sof image to the fseries-dk FPGA. Refer to the Program the FPGA via JTAG Section for step-by-step programming instructions.

  10. Use lspci to verify that the PCIe changes have been implemented.

    sudo lspci -vvv -s b1:00.0 | grep VF

    Example output: 

    Initial VFs: 1, Total VFs: 1, Number of VFs: 0, Function Dependency Link: 00
VF offset: 1, stride: 1, Device ID: bcce
VF Migration: offset: 00000000, BIR: 0

  11. You may wish to adjust the PR logic lock regions to maximize the resources available for the AFU. Refer to the Resize the Partial Reconfiguration Region section for instructions.

4.6 Migrating to a Different Agilex Device Number

The following instructions enable a user to change the device part number of the Agilex® 7 FPGA F-Series Development Kit (2x F-Tile). Please be aware that this release works with Agilex® 7 FPGA devices that have F-tile for PCIe and Ethernet. Other tiles will take further work.

You may wish to change the device part number for the following reasons

  1. Migrate to same device package but with a different density
  2. Migrate to a different package and with a different or same density

The default device for the Agilex® 7 FPGA F-Series Development Kit (2x F-Tile) is AGFB027R24C2E2VR2

4.6.1 Walkthrough: Migrate to a Different Agilex Device Number

Perform the following steps to migrate to a different Agilex Device. In this example, we will migrate from the default AGFB027R24C2E2VR2 device to AGFB027R31C2E2V. The package will change from R24C to R31C.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Modify the part field in the $OFS_ROOTDIR/tools/ofss_config/fseries-dk_base.ofss file to use AGFB027R31C2E2V.

    [ip]
type = ofs

[settings]
platform = n6001
family = agilex
fim = base_x16
part = AGFB027R31C2E2V 
device_id = 6001

  4. Modify the DEVICE field in the $OFS_ROOTDIR/syn/board/fseries-dk/syn_top/ofs_top.qsf file to use AGFB027R31C2E2V.

    ############################################################################################
# FPGA Device
############################################################################################

set_global_assignment -name FAMILY "Agilex 7"
set_global_assignment -name DEVICE AGFB027R31C2E2V

  5. Modify the DEVICE field in the $OFS_ROOTDIR/syn/board/fseries-dk/syn_top/ofs_pr_afu.qsf file to use AGFB027R31C2E2V.

    ############################################################################################
# FPGA Device
############################################################################################

set_global_assignment -name FAMILY Agilex 7
set_global_assignment -name DEVICE AGFB027R31C2E2V

  6. If the device you are migrating to uses the same package and pinout, you do not need to modify the pinout constraints. In this example, because we are migrating from package R24C to R31C, we need to modify the pinout to match the new device. If you would like Quartus to attempt to pin out the design automatically, you may remove all pin assignments. Typically, you will still need to set certain pins manually in order to guide Quartus for a successful compile (e.g. transceiver reference clocks).

    1. Commment out all pin assignments in the following files: * $OFS_ROOTDIR/syn/board/fseries-dk/setup/emif_loc.tcl * $OFS_ROOTDIR/syn/board/fseries-dk/setup/hps_loc.tcl * $OFS_ROOTDIR/syn/board/fseries-dk/setup/top_loc.tcl

    2. Identify the pins in the design that will be constrained. In this example we will manually constrain the QSFP reference clock and the PCIe reference clock to help guide the fitter. The Device Migration Pinout Table shows th pin assignments that will be set, along with the pin number for both the old R24C package and the new R31C package.

    Net Name Pin Name AGF 027 R24C Pin # AGF 027 R31C Pin #
    "qsfp_ref_clk(n)" REFCLK_FGTL12C_Q1_RX_CH2n AV48 BD57
    qsfp_ref_clk REFCLK_FGTL12C_Q1_RX_CH2p AW49 BB57
    "PCIE_REFCLK0(n)" REFCLK_FGTR13A_Q1_RX_CH2n BU7 BP13
    PCIE_REFCLK0 REFCLK_FGTR13A_Q1_RX_CH2p BR7 BN14

    1. Constrain the pins identified in Step 6.B in the $OFS_ROOTDIR/syn/board/fseries-dk/setup/top_loc.tcl file for the new pinout for the AGF 027 R31C package. 

      set_location_assignment PIN_BB57 -to qsfp_ref_clk
set_location_assignment PIN_BD57 -to "qsfp_ref_clk(n)"

set_location_assignment PIN_BP13 -to "PCIE_REFCLK0(n)"
set_location_assignment PIN_BN14 -to PCIE_REFCLK0

    2. Uncomment the instance assignments related to he QSFP reference clock in the $OFS_ROOTDIR/syn/board/fseries-dk/setup/top_loc.tcl file.

      set_instance_assignment -name IO_STANDARD "CURRENT MODE LOGIC (CML)" -to qsfp_ref_clk
set_instance_assignment -name HSSI_PARAMETER "refclk_divider_enable_termination=enable_term" -to qsfp_ref_clk
set_instance_assignment -name HSSI_PARAMETER "refclk_divider_enable_3p3v=disable_3p3v_tol" -to qsfp_ref_clk
set_instance_assignment -name HSSI_PARAMETER "refclk_divider_disable_hysteresis=enable_hyst" -to qsfp_ref_clk
set_instance_assignment -name HSSI_PARAMETER "refclk_divider_input_freq=156250000" -to qsfp_ref_clk
set_instance_assignment -name HSSI_PARAMETER "refclk_divider_powerdown_mode=false" -to qsfp_ref_clk
set_instance_assignment -name HSSI_PARAMETER "refclk_divider_use_as_bti_clock=TRUE" -to qsfp_ref_clk

  7. Compile a flat design. It is recommended to compile a flat design first before incorporating a PR region in the design.

    cd $OFS_ROOTDIR
./ofs-common/scripts/common/syn/build_top.sh --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk:flat work_fseries-dk

  8. Verify that the build completes successfuly. If there are timing violation, try building with a different seed. Refer to the Change the Compilation Seed section for instructions on changing the build seed.

  9. When you are satisfied with the pinout, preserve it by hard-coding the desired pinout to followig files:

    • $OFS_ROOTDIR/syn/board/fseries-dk/setup/emif_loc.tcl
    • $OFS_ROOTDIR/syn/board/fseries-dk/setup/hps_loc.tcl
    • $OFS_ROOTDIR/syn/board/fseries-dk/setup/top_loc.tcl

  10. When you are ready to re-incorporate PR into the design, modify the PR region to be compatible with the new device. Refer to the Resize the Partial Reconfiguration Region section for instructions.

4.7 Modify the Ethernet Sub-System

This section describes the flows for modifying the Ethernet Sub-System.

Note: The default HSSI-SS configuration for the fseries-dk is 2x4x25GbE.

Note: The fseries-dk does not support 2x200GbE or 1x400GbE configurations.

Note: Due to Ethernet differential pair routing on the ES version of the Agilex® 7 F-Series FPGA (Two F-Tiles) Development Kit, some differential pairs were swapped to improve signal routing. To account for the pair swap, there is a requirement to run a script to invert the differential traces. Refer to the "HE-HSSI" Section of the Getting Started Guide: OFS for Agilex® 7 PCIe Attach FPGAs (F-Series Development Kit (2xF-Tile)) for instructions on swapping the polarity of Ethernet differential pairs at run-time.

4.7.1 Walkthrough: Modify the Ethernet Sub-System to 2x4x10GbE Using IP Presets

Perform the following steps to modify the Ethernet Sub-System to 2x4x10GbE. In this walkthrough, we will create a new IP presets file that will be used during the build flow. Note that this modification can be done with OFSS, but the presets flow for demonstration purposes.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Run the setup stage of the build script to create a work directry for the fseries-dk design.

    ./ofs-common/scripts/common/syn/build_top.sh --stage setup --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk

  4. Open the HSSI-SS IP in the work directory using qsys-edit

    qsys-edit $OFS_ROOTDIR/work_fseries-dk/ipss/hssi/qip/hssi_ss/hssi_ss.ip

  5. Change the PORT_PROFILE parameter from 25GbE to 10GbE for Ports 0 through 7.

    eth_mod_8x10_parameter_editor

  6. Create an IP Presets file for this Ethernet Subsystem IP configuration.

    1. Click New in the bottom right corner of the Presets window.

      eth_mod_8x10_new_preset

    2. In the New Preset window, set the Preset name. In this example, we will name it 2x4x10g-fseries-dk.

      eth_mod_8x10_new_preset_window

    3. Click the ... button to select the save location of the Preset file.

    4. In the Save As window, navigate to the $OFS_ROODIR/ipss/hssi/qip/hssi_ss/presets directory. Set the File Name to 2x4x10g-fseries-dk.qprs. Then click OK.

      eth_mod_8x10_save_preset

    5. In the New Preset window, click Save. Click No when prompted to add the file to the IP search path.

  7. Close out of the IP Parameter Editor GUI. Do not save or generate the IP.

  8. Create a new HSSI OFSS file named $OFS_ROOTDIR/tools/ofss_config/hssi/hssi_2x4x10_ftile.ofss with the following contents. This will call the IP Presets file generated in Step 6.

    [ip]
  type = hssi

  [settings]
  output_name = hssi_ss
  num_channels = 8
  data_rate = 10GbE
  preset = 2x4x10g-fseries-dk

  9. Run the FIM build script with the new HSSI OFSS file created in Step 8.

    ./ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_2x4x10_ftile.ofss fseries-dk work_fseries-dk_eth_2x4x10

4.7.2 Walkthrough: Modify the Ethernet Sub-System to 3x4x25GbE Using OFSS

Perform the following steps to modify the Ethernet Sub-System to 3x4x25GbE. In this walkthrough, we will create HSSI OFSS file that will be used during the build flow.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Create a new HSSI OFSS file for the 3x4x25GbE configuration.

    1. Create the hssi_3x4x25_ftile.ofss file

      vim $OFS_ROOTDIR/tools/ofss_config/hssi/hssi_3x4x25_ftile.ofss

    2. Copy the following into the new HSSI OFSS file. Note that num_channels is set to 12:

      [ip]
type = hssi

[settings]
output_name = hssi_ss
num_channels = 12
data_rate = 25GbE

eth_f_rsfec = IEEE_802.3_RS_528_514
client_interface = MAC Avalon ST

  4. Edit the pinout constraints to support the new channels.

    1. Open the top_loc.tcl file

      vim $OFS_ROOTDIR/syn/board/fseries-dk/setup/top_loc.tcl

    2. Add hssi_if[11:8] connections, and change the qsfp_ref_clk pin to the global ref clock which can be accessed by all transceivers in the F-Tile.

      set_location_assignment PIN_AW55 -to hssi_if[8].rx_p
set_location_assignment PIN_BC55 -to hssi_if[9].rx_p
set_location_assignment PIN_BG55 -to hssi_if[10].rx_p
set_location_assignment PIN_BL55 -to hssi_if[11].rx_p

set_location_assignment PIN_AY54 -to hssi_if[8].rx_n
set_location_assignment PIN_BD54 -to hssi_if[9].rx_n
set_location_assignment PIN_BH54 -to hssi_if[10].rx_n
set_location_assignment PIN_BM54 -to hssi_if[11].rx_n

set_location_assignment PIN_BB52 -to hssi_if[8].tx_p
set_location_assignment PIN_BF52 -to hssi_if[9].tx_p
set_location_assignment PIN_BK52 -to hssi_if[10].tx_p
set_location_assignment PIN_BL49 -to hssi_if[11].tx_p

set_location_assignment PIN_BA51 -to hssi_if[8].tx_n
set_location_assignment PIN_BE51 -to hssi_if[9].tx_n
set_location_assignment PIN_BJ51 -to hssi_if[10].tx_n
set_location_assignment PIN_BM48 -to hssi_if[11].tx_n

set_location_assignment PIN_AW49 -to qsfp_ref_clk
set_location_assignment PIN_AV48 -to "qsfp_ref_clk(n)"

  5. Change the number of QSFP ports from 2 to 3 in the $OFS_ROOTDIR/ofs-common/src/fpga_family/agilex/hssi_ss/inc/ofs_fim_eth_plat_if_pkg.sv file.

    localparam NUM_QSFP_PORTS_USED  = 3; // Number of QSFP cages on board used by target hssi configuration

  6. Edit $OFS_ROOTDIR/ofs-common/src/fpga_family/agilex/hssi_ss/hssi_wrapper.sv so that the QSFP LED signals use NUM_QSFP_PORTS_USED defined in the previous step.

    // Speed and activity LEDS
output logic [NUM_QSFP_PORTS_USED-1:0]     o_qsfp_speed_green,       // Link up in Nx25G or 2x56G or 1x100G speed
output logic [NUM_QSFP_PORTS_USED-1:0]     o_qsfp_speed_yellow,      // Link up in Nx10G speed
output logic [NUM_QSFP_PORTS_USED-1:0]     o_qsfp_activity_green,    // Link up and activity seen
output logic [NUM_QSFP_PORTS_USED-1:0]     o_qsfp_activity_red       // LOS, TX Fault etc

  7. Build the flat FIM. It is recommended to build the flat FIM when making changes such as this to reduce complexity until the changes are finalized.

    ./ofs-common/scripts/common/syn/build_top.sh --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_3x4x25_ftile.ofss fseries-dk:flat work_fseries-dk_eth_12x25g

4.8 Modifying the HPS

This section describes ways to modify the HPS.

4.8.1 Walkthrough: Remove the HPS

Perform the following steps to remove the HPS from the FIM design.

Pre-requisites:

  • This walkthrough requires a development environment. Refer to the Set Up Development Environment Section for instructions on setting up a development environment.

Steps:

  1. Clone the OFS PCIe Attach FIM repository (or use an existing cloned repository). Refer to the Clone FIM Repository section for step-by-step instructions.

  2. Set development environment variables. Refer to the Set Development Environment Variables section for step-by-step instructions.

  3. Run the setup stage of the build script to create a work directry for the fseries-dk design.

    ./ofs-common/scripts/common/syn/build_top.sh --stage setup --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk

  4. Create a Memory Sub-system IP presets file with the connection to the HPS removed.

    1. In the work directory created in Step 3, open the mem_ss.ip

      qsys-edit $OFS_ROOTDIR/work_fseries-dk/ipss/mem/qip/mem_ss/mem_ss.ip

    2. In the IP Parameter Editor window that opens, remove the entries corresponding to the HPS (row #2) in the Memory Interfaces and Application Interfaces sections. To do this, click the row to be removed, then click the minus (-) button.

    3. In the Presets pane, click New... to create a new IP presets file.

    4. In the New Preset window, create a unique preset name. For example, fseries-dk-mem-no-hps.

    5. Click the ... button to select the save location of the IP presets file. In the Save As window, set the Look In field to the memory IP presets directory $OFS_ROOTDIR/ipss/mem/qip/presets. Set the File Name field to match the name selected in Step 4. Click OK.

    6. Click Save in the New Preset window. Click No when prompted to add the file to the IP search path.

    7. Close IP Parameter Editor without saving or generating HDL.

  5. Edit the Memory OFSS file $OFS_ROOTDIR/tools/ofss_config/memory/memory_ftile.ofss to use the IP presets file generated in Step 4.

    [ip]
type = memory

[settings]
output_name = mem_ss
preset = fseries-dk-mem-no-hps

  6. Edit $OFS_ROOTDIR/syn/board/fseries-dk/syn_top/ofs_top.qsf to comment out the INCLUDE_HPS macro definition.

    #set_global_assignment -name VERILOG_MACRO "INCLUDE_HPS"

  7. Build the FIM.

    ./ofs-common/scripts/common/syn/build_top.sh -p --ofss tools/ofss_config/fseries-dk.ofss,tools/ofss_config/hssi/hssi_8x25_ftile.ofss fseries-dk work_fseries-dk_no_hps

5. FPGA Configuration

Configuring the Agilex FPGA on the fseries-dk is done by programming a SOF image to the FPGA via JTAG using Quartus Programer.

5.1 Walkthrough: Set up JTAG

The Agilex® 7 FPGA F-Series Development Kit (2x F-Tile) has an on-board FPGA Download Cable II module which is used to program the FPGA via JTAG.

Perform the following steps to establish a JTAG connection with the fseries-dk.

Pre-requisites:

  • This walkthrough requires a workstation with Quartus Prime Pro Version 23.4 tools installed, specifically the jtagconfig tool.

Steps:

  1. Refer to the following figure for Steps 2 and 3.

    agilex_ftile_dev_kit

  2. Locate Single DIP Switch SW2 and 4-position DIP switch SW3 on the fseries-dk. These switches control the JTAG setup for the board. Ensure that both SW2 and SW3.3 are set to ON.

  3. Locate the J10 Micro-USB port on the fseries-dk. Connect a Micro-USB to USB-A cable between the J10 port and the workstation that has Quartus Prime Pro tools installed.

  4. Use the jtagconfig tool to check that the JTAG chain contains the AGFB027R24C2E2VR2 device.

    <QUARTUS_INSTALL_DIR>/23.4/quartus/bin/jtagconfig

    Example expected output:

    1) Agilex F-Series FPGA Dev Kit [1-6]
0343B0DD   AGFB027R24C(.|R2|R0)/..
020D10DD   VTAP10

This concludes the walkthrough for establishing a JTAG connection on the fseries-dk.

5.2 Walkthrough: Program the FPGA via JTAG

This walkthrough describes the steps to program the Agilex FPGA on the Agilex® 7 FPGA F-Series Development Kit (2x F-Tile) with a SOF image via JTAG.

Pre-Requisites:

  • This walkthrough requires a SOF image which will be programmed to the Agilex FPGA. Refer to the Compile OFS FIM Section for step-by-step instructions for generating a SOF image.
  • This walkthrough requires a JTAG connection to the fseries-dk. Refer to the Set up JTAG section for step-by-step instructions.
  • This walkthrough requires a Full Quartus Installation or Standalone Quartus Prime Programmer & Tools running on the machine where the Agilex® 7 FPGA F-Series Development Kit (2x F-Tile) is connected via JTAG.

Steps:

  1. Start in your deployment environment.

  2. If the card is already programmed with an OFS enabled design, determine the PCIe B:D.F of the card using OPAE command fpgainfo fme. In this example, the PCIe B:D.F is B1:00.0.

    fpgainfo fme

    Example output:

    Intel Acceleration Development Platform N6001
board_n6000.c:306:read_bmcfw_version() **ERROR** : Failed to get read object
board_n6000.c:482:print_board_info() **ERROR** : Failed to read bmc version
board_n6000.c:332:read_max10fw_version() **ERROR** : Failed to get read object
board_n6000.c:488:print_board_info() **ERROR** : Failed to read max10 version
Board Management Controller NIOS FW version:
Board Management Controller Build version:
//****** FME ******//
Interface                        : DFL
Object Id                        : 0xEF00001
PCIe s:b:d.f                     : 0000:B1:00.0
Vendor Id                        : 0x8086
Device Id                        : 0xBCCE
SubVendor Id                     : 0x8086
SubDevice Id                     : 0x1771
Socket Id                        : 0x00
Ports Num                        : 01
Bitstream Id                     : 0x5010202A8769764
Bitstream Version                : 5.0.1
Pr Interface Id                  : b541eb7c-3c7e-5678-a660-a54f71594b34
Boot Page                        : N/A

    Note: The errors related to the BMC are the result of the OFS BMC not being present on the fseries-dk design. These will be removed in a future release.

  3. Remove the card from PCIe prior to programming. This will disable AER for the PCIe root port to prevent a surprise link-down event during programming.

    sudo pci_device b1:00.0 unplug

  4. Switch to the machine with JTAG connection to the fseries-dk, if different than your deployment machine.

  5. Open the Quartus programmer GUI

    quartus_pgmw

    quartus_pgmw

  6. Click Hardware Setup to open the Hardware Setup dialog window.

    1. In the Currently selected hardware field select the fseries-dk.

    2. In the Hardware frequency field enter 16000000 Hz

      quartus_pgmw_hardware_setup

    3. Click Close

  7. In the Quartus Prime Programmer window, click Auto Detect.

  8. If prompted, select the AGFB027R24C2E2VR2 device. The JTAG chain should show the device.

    quartus_pgmw_device_chain

  9. Right click the AGFB027R24C2E2VR2 row and selct Change File.

    quartus_pgmw_change_file

  10. In the Select New Programming File window that opens, select the .sof image you wish to program and click Open.

  11. Check the Program/Configure box for the AGFB027R24C2E2VR2 row, then click Start. Wait for the Progress bar to show 100% (Success).

    quartus_pgmw_success

  12. Close the Quartus Programmer GUI.

  13. Switch to the deployment environment, if different than the JTAG connected machine.

  14. Replug the board PCIe

    sudo pci_device b1:00.0 plug

  15. Run fpgainfo fme to verify communication with the board, and to check the PR Interface ID.

    Intel Acceleration Development Platform N6001
board_n6000.c:306:read_bmcfw_version() **ERROR** : Failed to get read object
board_n6000.c:482:print_board_info() **ERROR** : Failed to read bmc version
board_n6000.c:332:read_max10fw_version() **ERROR** : Failed to get read object
board_n6000.c:488:print_board_info() **ERROR** : Failed to read max10 version
Board Management Controller NIOS FW version:
Board Management Controller Build version:
//****** FME ******//
Interface                        : DFL
Object Id                        : 0xEF00001
PCIe s:b:d.f                     : 0000:B1:00.0
Vendor Id                        : 0x8086
Device Id                        : 0xBCCE
SubVendor Id                     : 0x8086
SubDevice Id                     : 0x1771
Socket Id                        : 0x00
Ports Num                        : 01
Bitstream Id                     : 0x501020241BF165B
Bitstream Version                : 5.0.1
Pr Interface Id                  : e7f69412-951f-5d1a-8cb7-8c778ac02055
Boot Page                        : N/A

    Note: The errors related to the BMC are the result of the OFS BMC not being present on the fseries-dk design. These will be removed in a future release.

Appendix

Appendix A: Resource Utilization Tables

Table A-1 Default Flat FIM Resource Utilization

Compilation Hierarchy Node ALMs needed ALM Utilization % M20Ks M20K Utilization %
153105.5 16.77 624 4.7
afu_top 83365.9 9.13 274 2.06
auto_fab_0 1339.6 0.15 9 0.07
bpf 780.1 0.09 0 0.0
fme_top 658.5 0.07 6 0.05
hps_ss 0.0 0.0 0 0.0
hssi_wrapper 11681.9 1.28 81 0.61
mem_ss_top 5712.9 0.63 38 0.29
ofs_top_auto_tiles 8180.5 0.9 20 0.15
pcie_wrapper 39444.9 4.32 188 1.42
pmci_dummy_csr 668.2 0.07 0 0.0
qsfp_0 627.1 0.07 4 0.03
qsfp_1 624.6 0.07 4 0.03
rst_ctrl 17.1 0.0 0 0.0
sys_pll 0.4 0.0 0 0.0

Table A-2 Default In-Tree PR FIM Resource Utilization

Compilation Hierarchy Node ALMs needed ALM Utilization % M20Ks M20K Utilization %
158371.6 17.35 624 4.7
afu_top 88125.9 9.65 274 2.06
auto_fab_0 1305.6 0.14 9 0.07
bpf 782.5 0.09 0 0.0
fme_top 650.5 0.07 6 0.05
hps_ss 0.0 0.0 0 0.0
hssi_wrapper 11757.4 1.29 81 0.61
mem_ss_top 6155.1 0.67 38 0.29
ofs_top_auto_tiles 8263.6 0.91 20 0.15
pcie_wrapper 39393.5 4.32 188 1.42
pmci_dummy_csr 658.9 0.07 0 0.0
qsfp_0 625.0 0.07 4 0.03
qsfp_1 632.8 0.07 4 0.03
rst_ctrl 16.3 0.0 0 0.0
sys_pll 0.4 0.0 0 0.0

Table A-3 Default Out-of-Tree FIM Resource Utilization

Compilation Hierarchy Node ALMs needed ALM Utilization % M20Ks M20K Utilization %
158287.4 17.34 624 4.7
afu_top 88046.1 9.65 274 2.06
auto_fab_0 1313.2 0.14 9 0.07
bpf 784.7 0.09 0 0.0
fme_top 656.1 0.07 6 0.05
hps_ss 0.0 0.0 0 0.0
hssi_wrapper 11781.0 1.29 81 0.61
mem_ss_top 6164.6 0.68 38 0.29
ofs_top_auto_tiles 8224.2 0.9 20 0.15
pcie_wrapper 39365.6 4.31 188 1.42
pmci_dummy_csr 665.1 0.07 0 0.0
qsfp_0 635.1 0.07 4 0.03
qsfp_1 631.7 0.07 4 0.03
rst_ctrl 15.1 0.0 0 0.0
sys_pll 0.5 0.0 0 0.0

Table A-4 Minimal FIM Resource Utilization

Compilation Hierarchy Node ALMs needed ALM Utilization % M20Ks M20K Utilization %
101487.5 11.12 453 3.41
afu_top 31185.9 3.42 105 0.79
auto_fab_0 1309.6 0.14 9 0.07
bpf 797.6 0.09 0 0.0
fme_top 656.8 0.07 6 0.05
hps_ss 0.0 0.0 0 0.0
hssi_wrapper 11649.8 1.28 81 0.61
mem_ss_top 6447.4 0.71 38 0.29
ofs_top_auto_tiles 8288.5 0.91 20 0.15
pcie_wrapper 39208.5 4.3 186 1.4
pmci_dummy_csr 670.4 0.07 0 0.0
qsfp_0 623.6 0.07 4 0.03
qsfp_1 627.8 0.07 4 0.03
rst_ctrl 16.2 0.0 0 0.0
sys_pll 0.4 0.0 0 0.0

Appendix B: Glossary

Term Abbreviation Description
Advanced Error Reporting AER The PCIe AER driver is the extended PCI Express error reporting capability providing more robust error reporting. (link)
Accelerator Functional Unit AFU Hardware Accelerator implemented in FPGA logic which offloads a computational operation for an application from the CPU to improve performance. Note: An AFU region is the part of the design where an AFU may reside. This AFU may or may not be a partial reconfiguration region.
Basic Building Block BBB Features within an AFU or part of an FPGA interface that can be reused across designs. These building blocks do not have stringent interface requirements like the FIM's AFU and host interface requires. All BBBs must have a (globally unique identifier) GUID.
Best Known Configuration BKC The software and hardware configuration Intel uses to verify the solution.
Board Management Controller BMC Supports features such as board power managment, flash management, configuration management, and board telemetry monitoring and protection. The majority of the BMC logic is in a separate component, such as an Intel® Max® 10 or Intel Cyclone® 10 device; a small portion of the BMC known as the PMCI resides in the main Agilex FPGA.
Configuration and Status Register CSR The generic name for a register space which is accessed in order to interface with the module it resides in (e.g. AFU, BMC, various sub-systems and modules).
Data Parallel C++ DPC++ DPC++ is Intel’s implementation of the SYCL standard. It supports additional attributes and language extensions which ensure DCP++ (SYCL) is efficiently implanted on Intel hardware.
Device Feature List DFL The DFL, which is implemented in RTL, consists of a self-describing data structure in PCI BAR space that allows the DFL driver to automatically load the drivers required for a given FPGA configuration. This concept is the foundation for the OFS software framework. (link)
FPGA Interface Manager FIM Provides platform management, functionality, clocks, resets and standard interfaces to host and AFUs. The FIM resides in the static region of the FPGA and contains the FPGA Management Engine (FME) and I/O ring.
FPGA Management Engine FME Performs reconfiguration and other FPGA management functions. Each FPGA device only has one FME which is accessed through PF0.
Host Exerciser Module HEM Host exercisers are used to exercise and characterize the various host-FPGA interactions, including Memory Mapped Input/Output (MMIO), data transfer from host to FPGA, PR, host to FPGA memory, etc.
Input/Output Control IOCTL System calls used to manipulate underlying device parameters of special files.
Intel Virtualization Technology for Directed I/O Intel VT-d Extension of the VT-x and VT-I processor virtualization technologies which adds new support for I/O device virtualization.
Joint Test Action Group JTAG Refers to the IEEE 1149.1 JTAG standard; Another FPGA configuration methodology.
Memory Mapped Input/Output MMIO The memory space users may map and access both control registers and system memory buffers with accelerators.
oneAPI Accelerator Support Package oneAPI-asp A collection of hardware and software components that enable oneAPI kernel to communicate with oneAPI runtime and OFS shell components. oneAPI ASP hardware components and oneAPI kernel form the AFU region of a oneAPI system in OFS.
Open FPGA Stack OFS OFS is a software and hardware infrastructure providing an efficient approach to develop a custom FPGA-based platform or workload using an Intel, 3rd party, or custom board.
Open Programmable Acceleration Engine Software Development Kit OPAE SDK The OPAE SDK is a software framework for managing and accessing programmable accelerators (FPGAs). It consists of a collection of libraries and tools to facilitate the development of software applications and accelerators. The OPAE SDK resides exclusively in user-space.
Platform Interface Manager PIM An interface manager that comprises two components: a configurable platform specific interface for board developers and a collection of shims that AFU developers can use to handle clock crossing, response sorting, buffering and different protocols.
Platform Management Controller Interface PMCI The portion of the BMC that resides in the Agilex FPGA and allows the FPGA to communicate with the primary BMC component on the board.
Partial Reconfiguration PR The ability to dynamically reconfigure a portion of an FPGA while the remaining FPGA design continues to function. For OFS designs, the PR region is referred to as the pr_slot.
Port N/A When used in the context of the fpgainfo port command it represents the interfaces between the static FPGA fabric and the PR region containing the AFU.
Remote System Update RSU The process by which the host can remotely update images stored in flash through PCIe. This is done with the OPAE software command "fpgasupdate".
Secure Device Manager SDM The SDM is the point of entry to the FPGA for JTAG commands and interfaces, as well as for device configuration data (from flash, SD card, or through PCI Express* hard IP).
Static Region SR The portion of the FPGA design that cannot be dynamically reconfigured during run-time.
Single-Root Input-Output Virtualization SR-IOV Allows the isolation of PCI Express resources for manageability and performance.
SYCL SYCL SYCL (pronounced "sickle") is a royalty-free, cross-platform abstraction layer that enables code for heterogeneous and offload processors to be written using modern ISO C++ (at least C++ 17). It provides several features that make it well-suited for programming heterogeneous systems, allowing the same code to be used for CPUs, GPUs, FPGAs or any other hardware accelerator. SYCL was developed by the Khronos Group, a non-profit organization that develops open standards (including OpenCL) for graphics, compute, vision, and multimedia. SYCL is being used by a growing number of developers in a variety of industries, including automotive, aerospace, and consumer electronics.
Test Bench TB Testbench or Verification Environment is used to check the functional correctness of the Design Under Test (DUT) by generating and driving a predefined input sequence to a design, capturing the design output and comparing with-respect-to expected output.
Universal Verification Methodology UVM A modular, reusable, and scalable testbench structure via an API framework. In the context of OFS, the UVM enviroment provides a system level simulation environment for your design.
Virtual Function Input/Output VFIO An Input-Output Memory Management Unit (IOMMU)/device agnostic framework for exposing direct device access to userspace. (link)

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