GTS AXI Multichannel DMA IP for PCI Express* User Guide

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ID 847470
Date 8/25/2025
Public
Document Table of Contents
Document Table of Contents x
1. Overview 2. Quick Start Guide 3. Configuring and Generating the GTS AXI Multichannel DMA IP for PCI Express 4. Integrating the IP With Your Application 5. Simulating the IP 6. Validating the IP 7. Known Issues A. Functional Description B. Software Programming Model C. Registers D. Document Revision History for the GTS AXI Multichannel DMA IP for PCI Express*
1. Overview x
1.1. About the GTS AXI Multichannel DMA IP for PCI Express* 1.2. About the Document 1.3. Applications 1.4. Key Concepts 1.5. IP Design Flow 1.6. Design Guidelines 1.7. Design Flow Requirements
1.1. About the GTS AXI Multichannel DMA IP for PCI Express* x
1.1.1. IP Release Information 1.1.2. IP Features 1.1.3. IP High-level Block Diagram 1.1.4. Licensing the IP 1.1.5. Device Family Support 1.1.6. Device Speed Grade Support 1.1.7. Resource Utilization 1.1.8. IP and Design Example Support
1.1.2. IP Features x
1.1.2.1. Root Port Mode Features 1.1.2.2. Endpoint Mode Features
1.2. About the Document x
1.2.1. Target Audience 1.2.2. Conventions Used in the Document 1.2.3. Terminology 1.2.4. Acronyms 1.2.5. Reference Documents and Training
1.4. Key Concepts x
1.4.1. PCI Express and DMA 1.4.2. Altera FPGA IPs for PCI Express and DMA Controller 1.4.3. Example Use Case
1.6. Design Guidelines x
1.6.1. Supporting IPs 1.6.2. Aligning IP Settings with the GTS AXI Streaming IP for PCI Express
1.7. Design Flow Requirements x
1.7.1. Software Requirements 1.7.2. Hardware Requirements 1.7.3. Supported EDA Tools
2. Quick Start Guide x
2.1. Step-by-step IP Bring-up 2.2. Reset Sequence
2.1. Step-by-step IP Bring-up x
2.1.1. Downloading and Installing Quartus® Prime Software 2.1.2. Configuring and Generating the GTS AXI Multichannel DMA IP for PCI Express 2.1.3. Configuring and Generating the GTS AXI Streaming IP for PCI Express 2.1.4. Configuring and Generating the GTS System PLL Clocks IP 2.1.5. Configuring and Generating the GTS Reset Sequencer IP 2.1.6. Configuring and Generating the Reset Release IP 2.1.7. Instantiating and Connecting the IP Interfaces 2.1.8. Simulate, Compile and Validate the Design on Hardware
2.2. Reset Sequence x
2.2.1. Cold Reset Sequence Triggered by PERST# Signal 2.2.2. Warm Reset Sequence Triggered by Hot Reset 2.2.3. Cold Reset Triggered by User 2.2.4. Warm Reset Triggered by User
3. Configuring and Generating the GTS AXI Multichannel DMA IP for PCI Express x
3.1. Creating the Quartus® Prime Project 3.2. Configuring the GTS AXI Multichannel DMA IP for PCI Express 3.3. Generating HDL for Simulation and Synthesis 3.4. Generating the Design Example 3.5. Compiling the Design Example
3.2. Configuring the GTS AXI Multichannel DMA IP for PCI Express x
3.2.1. IP Settings 3.2.2. PCIe Settings
3.2.2. PCIe Settings x
3.2.2.1. MCDMA Settings 3.2.2.2. PCI Express / PCI Capabilities 3.2.2.3. Base Address Registers
3.2.2.1. MCDMA Settings x
3.2.2.1.1. Multichannel DMA Mode 3.2.2.1.2. Bursting Master Mode 3.2.2.1.3. Bursting Slave Mode 3.2.2.1.4. BAM + BAS Mode 3.2.2.1.5. BAM + MCDMA Mode 3.2.2.1.6. BAM + BAS + MCDMA Mode
3.2.2.2. PCI Express / PCI Capabilities x
3.2.2.2.1. PCIe Device 3.2.2.2.2. PCIe MSI-X
3.2.2.2.2. PCIe MSI-X x
3.2.2.2.2.1. PCIe PF MSI-X 3.2.2.2.2.2. PCIe VF MSI-X
3.3. Generating HDL for Simulation and Synthesis x
3.3.1. IP Core Generation Output
4. Integrating the IP With Your Application x
4.1. Overview 4.2. Implementing Required Clocking 4.3. Implementing Required Resets 4.4. Connecting the GTS AXI Streaming IP-Facing Interfaces 4.5. Connect User Logic-Facing Interfaces
4.4. Connecting the GTS AXI Streaming IP-Facing Interfaces x
4.4.1. PCIe AXI-Stream TX Interface (ss_tx_st) 4.4.2. PCIe AXI-Stream RX Interface (ss_rx_st) 4.4.3. Control and Status Register Interface (ss_csr_lite) 4.4.4. Transmit Flow Control Credit Interface (ss_txcrdt) 4.4.5. Configuration Intercept Interface (CII) 4.4.6. Completion Timeout Interface (ss_cplto) 4.4.7. Function Level Reset (FLR) Interface 4.4.8. Control Shadow Interface (ss_ctrlshadow) 4.4.9. Error Interface
4.4.5. Configuration Intercept Interface (CII) x
4.4.5.1. Configuration Intercept Request Interface (ss_cii_req) 4.4.5.2. Configuration Intercept Response Interface (ss_cii_resp)
4.4.7. Function Level Reset (FLR) Interface x
4.4.7.1. FLR Received Interface (ss_flrrcvd) 4.4.7.2. FLR Completion Interface (ss_flrcmpl)
4.5. Connect User Logic-Facing Interfaces x
4.5.1. H2D AXI-Stream Manager (h2d_st_initatr) 4.5.2. D2H AXI-Stream Subordinate (d2h_st_respndr) 4.5.3. H2D/D2H AXI-MM Manager (dma_mm_initatr) 4.5.4. BAM AXI-MM Manager (bam_mm_initatr) 4.5.5. BAS AXI-MM Subordinate (bas_mm_respndr) 4.5.6. PIO AXI-Lite Manager (pio_lite_initiatr) 4.5.7. HIP Reconfiguration AXI-Lite Subordinate (user_csr_lite) 4.5.8. User Event MSI-X (user_msix) 4.5.9. User Event MSI (user_msi) 4.5.10. User Function Level Reset (user_flr) 4.5.11. User Configuration Intercept Interface 4.5.12. Configuration Slave (cs_lite_respndr)
4.5.11. User Configuration Intercept Interface x
4.5.11.1. User Configuration Intercept Request Interface (user_cii_req) 4.5.11.2. User Configuration Intercept Response Interface (user_cii_resp)
5. Simulating the IP x
5.1. Design Example Overview 5.2. Simulating the Design Example
5.1. Design Example Overview x
5.1.1. AXI-S Device-side Packet Loopback Design Example 5.1.2. AXI-S Packet Generate/Check Design Example 5.1.3. AXI-MM Traffic Generator/Checker Design Example 5.1.4. AXI-MM BAM EP Memory Design Example
5.1.3. AXI-MM Traffic Generator/Checker Design Example x
5.1.3.1. AXI-MM Traffic Generator/Checker Design Example Register Map
6. Validating the IP x
6.1. Driver Support for MCDMA Design Examples 6.2. Hardware and Software Requirements 6.3. Running the Design Example Application on a Hardware Setup
6.3. Running the Design Example Application on a Hardware Setup x
6.3.1. Program the FPGA 6.3.2. Configuration Changes from BIOS 6.3.3. Installing the Required Kernel Version (if Working with Ubuntu 24.04) 6.3.4. Set the Boot Parameters 6.3.5. Custom Driver 6.3.6. DPDK Poll Mode Driver
6.3.5. Custom Driver x
6.3.5.1. Prerequisites 6.3.5.2. PIO Test 6.3.5.3. Custom PIO Read Write Test 6.3.5.4. DMA Test 6.3.5.5. BAM Test 6.3.5.6. BAS Test
6.3.5.1. Prerequisites x
6.3.5.1.1. Install the Linux Kernel Driver 6.3.5.1.2. Enable Virtual Function 6.3.5.1.3. Build and Install User Space Library 6.3.5.1.4. Build the Reference Application
6.3.5.4. DMA Test x
6.3.5.4.1. AXI-S Device-side Packet Loopback (Device-side Packet Loopback) 6.3.5.4.2. AXI-S Packet Generate/Check
6.3.6. DPDK Poll Mode Driver x
6.3.6.1. Prerequisites 6.3.6.2. PIO Test 6.3.6.3. DMA Test 6.3.6.4. BAM Test 6.3.6.5. BAS Test
6.3.6.1. Prerequisites x
6.3.6.1.1. Install PMD Driver 6.3.6.1.2. Bind the Device 6.3.6.1.3. Enable Virtual Function
6.3.6.3. DMA Test x
6.3.6.3.1. Device-side Packet Loopback 6.3.6.3.2. AXI-MM DMA 6.3.6.3.3. AXI-S Packet Generate/Check
A. Functional Description x
A.1. High-level Functional Overview
A.1. High-level Functional Overview x
A.1.1. Multichannel DMA A.1.2. Bursting Master (BAM) A.1.3. Bursting Slave (BAS) A.1.4. MSI Interrupt A.1.5. Configuration Slave (CS) A.1.6. Root Port Address Translation Table Enablement A.1.7. Control and Status Register Interface A.1.8. Configuration Intercept Interface
A.1.1. Multichannel DMA x
A.1.1.1. H2D Data Mover A.1.1.2. D2H Data Mover A.1.1.3. Descriptors A.1.1.4. AXI4-Lite PIO Manager A.1.1.5. AXI-MM Write (H2D) and Read (D2H) Manager A.1.1.6. AXI-Stream Manager (H2D) and Subordinate (D2H) A.1.1.7. User MSI-X A.1.1.8. User Function Level Reset (FLR) A.1.1.9. Control and Status Registers
A.1.1.2. D2H Data Mover x
A.1.1.2.1. D2H Descriptor Fetch
A.1.1.3. Descriptors x
A.1.1.3.1. Support for Unaligned (or Byte-Aligned) Data Transfer A.1.1.3.2. Metadata Support A.1.1.3.3. MSI-X/Writeback
A.1.4. MSI Interrupt x
A.1.4.1. Endpoint MSI Support Through BAS A.1.4.2. MSI Interrupt Controller
A.1.5. Configuration Slave (CS) x
A.1.5.1. 14-bit AXI-MM Address Format A.1.5.2. Configuration Access Mechanism
B. Software Programming Model x
B.1. GTS AXI MCDMA IP Custom Driver B.2. GTS AXI MCDMA IP DPDK Poll Mode-Based Driver
B.1. GTS AXI MCDMA IP Custom Driver x
B.1.1. Architecture B.1.2. libmqdma library details B.1.3. Application B.1.4. Software Flow B.1.5. API Flow B.1.6. libmqdma Library API List B.1.7. Request Structures
B.1.2. libmqdma library details x
B.1.2.1. Channel Initialization B.1.2.2. Descriptor Memory Management B.1.2.3. Descriptor Completion Status Update
B.1.5. API Flow x
B.1.5.1. Single Descriptor Load and Submit B.1.5.2. Multiple-Descriptor Load and Submit
B.1.6. libmqdma Library API List x
B.1.6.1. ifc_api_start B.1.6.2. ifc_mcdma_port_by_name B.1.6.3. ifc_qdma_device_get B.1.6.4. ifc_num_channels_get B.1.6.5. ifc_qdma_channel_get B.1.6.6. ifc_qdma_acquire_channels B.1.6.7. ifc_qdma_release_all_channels B.1.6.8. ifc_qdma_device_put B.1.6.9. ifc_qdma_channel_put B.1.6.10. ifc_qdma_completion_poll B.1.6.11. ifc_qdma_request_start B.1.6.12. ifc_qdma_request_prepare B.1.6.13. ifc_qdma_descq_queue_batch_load B.1.6.14. ifc_qdma_request_submit B.1.6.15. ifc_qdma_pio_read32 B.1.6.16. ifc_qdma_pio_write32 B.1.6.17. ifc_qdma_pio_read64 B.1.6.18. ifc_qdma_pio_write64 B.1.6.19. ifc_qdma_pio_read128 B.1.6.20. ifc_qdma_pio_write128 B.1.6.21. ifc_qdma_pio_read256 B.1.6.22. ifc_qdma_pio_write256 B.1.6.23. ifc_request_malloc B.1.6.24. ifc_request_free B.1.6.25. ifc_app_stop B.1.6.26. ifc_qdma_poll_init B.1.6.27. ifc_qdma_poll_add B.1.6.28. ifc_qdma_poll_wait B.1.6.29. ifc_mcdma_port_by_name
B.2. GTS AXI MCDMA IP DPDK Poll Mode-Based Driver x
B.2.1. Architecture B.2.2. GTS AXI MCDMA Poll Mode Driver B.2.3. DPDK based application B.2.4. Request Structures B.2.5. Software Flow B.2.6. API Flow B.2.7. API List
B.2.2. GTS AXI MCDMA Poll Mode Driver x
B.2.2.1. Completion Status Update B.2.2.2. Metadata Support B.2.2.3. User MSI-X
C. Registers x
C.1. Queue Control C.2. MSI-X Memory Space C.3. Control Register (GCSR)
1. Overview
2. Quick Start Guide
3. Configuring and Generating the GTS AXI Multichannel DMA IP for PCI Express
4. Integrating the IP With Your Application
5. Simulating the IP
6. Validating the IP
7. Known Issues
A. Functional Description
B. Software Programming Model
C. Registers
D. Document Revision History for the GTS AXI Multichannel DMA IP for PCI Express*

6.3.4. Set the Boot Parameters

Follow the steps below to modify the default hugepages setting in the grub files:
  1. Edit the /etc/default/grub file.

    Append the following parameters to the GRUB_CMDLINE_LINUX line in the /etc/default/grub file:

    For Intel CPU: 
    GRUB_CMDLINE_LINUX="default_hugepagesz=1G hugepagesz=1G hugepages=20 intel_iommu=on 
iommu=pt processor.max_cstate=0 intel_idle.max_cstate=0 intel_pstate=disable panic=1 quiet splash 
vt.handoff=7"
    For AMD CPU: 
    GRUB_CMDLINE_LINUX="default_hugepagesz=1G hugepagesz=1G hugepages=20 amd_iommu=on 
iommu=soft processor.max_cstate=0 amd-pstate panic=1 quiet splash vt.handoff=7"
    An Intel CPU example of the /etc/default/grub file on Ubuntu after the edits can be seen below: 
    root@bapvecise042:~# cat /etc/default/grub # If you change this file, run 'update-grub' 
afterwards to update # /boot/grub/grub.cfg. 
# For full documentation of the options in this file, see: 
#   info -f grub -n 'Simple configuration' 
GRUB_DEFAULT="1>2" GRUB_TIMEOUT_STYLE=hidden 
GRUB_TIMEOUT=0 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` 
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" 
GRUB_CMDLINE_LINUX="default_hugepagesz=1G hugepagesz=1G hugepages=20 intel_iommu=on iommu=pt 
nprocessor.max_cstate=0 intel_idle.max_cstate=0 intel_pstate=disable panic=1 quiet splash vt.handoff=7"
# Uncomment to enable BadRAM filtering, modify to suit your needs 
# This works with Linux (no patch required) and with any kernel that obtains # the memory map information 
# from GRUB (GNU Mach, kernel of FreeBSD ...) 
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" 
# Uncomment to disable graphical terminal (grub-pc only) 
#GRUB_TERMINAL=console 
# The resolution used on graphical terminal 
# note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB 
# with the command `vbeinfo' 
#GRUB_GFXMODE=640x480 
# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux 
#GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries 
#GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start 
#GRUB_INIT_TUNE="480 440 1"
  2. Generate GRUB configuration files by running the following command:

    $ sudo update-grub

  3. Reboot the system.
  4. Verify the changes above:

    $ cat /proc/cmdline

  5. Set the huge pages:

    $ echo 40 > sudo tee /proc/sys/vm/nr_hugepages

  6. If the host supports multiple NUMAs, follow the following steps:
    1. Check how many NUMAs are enabled on the host.
      $lscpu | grep NUMA
NUMA node(s): 2
NUMA node0 CPU(s): 0-15, 32-47
NUMA node1 CPU(s): 16-31, 48-63

      In this example, we have 2 NUMAs. If only one NUMA is present, ignore this step.

    2. Check which device is provisioned:

      $ cat /sys/class/pci_bus/<Domain:Bus>/device/numa_node

    3. Enable the huge pages, whichever NUMA device is located:
      $ echo 40> sudo tee /sys/devices/system/node/node<nodenum>/hugepages/hugepages-1048576kB/nr_hugepages
    4. Configure the thread sequence in software /user/cli/perfq_app/perfq_app.h based on which NUMA device is located. For example:

      #define THREAD_SEQ "0-15"

  7. Set PCIe_SLOT based on your design example link width configuration. Modify the macro below in the user/common/include/ifc_libmqdma.h and dpdk/dpdk/drivers/net/mcdma/rte_pmd_mcdma.h files:

    #define PCIe_SLOT 0 /* 0 - x16, 1 - x8, 2 – x4 */

    Example of macro setting for x4 link width:

    #define PCIe_SLOT 2

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