Scalable Scatter-Gather DMA FPGA IP User Guide

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ID 823097
Date 9/22/2025
Public
Document Table of Contents
Document Table of Contents x
1. Product Discontinuance Notification 2. Terms and Acronyms 3. Introduction 4. Functional Description 5. Interfaces 6. HAL Driver for DMA SoC Mode  7. Parameters 8. Registers 9. Document Revision History for the Scalable Scatter-Gather DMA Intel® FPGA IP User Guide
3. Introduction x
3.1. Device Family Support 3.2. Release Information 3.3. Resource Utilization
4. Functional Description x
4.1. DMA PCIe* Mode 4.2. DMA SoC Mode 4.3. Device Port 4.4. Prefetcher Engine 4.5. DMA Arbiter 4.6. DMA Router 4.7. CSRUnit 4.8. Descriptor Handling 4.9. Interrupts 4.10. Reset Initialization Flows 4.11. Transaction Flow
4.1. DMA PCIe* Mode x
4.1.1. Submodules
4.1.1. Submodules x
4.1.1.1. PCIe* TLP Constructor 4.1.1.2. PCIe* TLP ID Generation 4.1.1.3. PCIe TX Credit Controller 4.1.1.4. PCIe* TX Scheduler 4.1.1.5. PCIe TLP Completer 4.1.1.6. PCIe RX Router 4.1.1.7. PCIe* MSI-X Controller 4.1.1.8. PCIe BAR0 4.1.1.9. PCIe Bursting Manager (BAM) 4.1.1.10. Completion Timeout Parser 4.1.1.11. Control Shadow Parser
4.2. DMA SoC Mode x
4.2.1. Interrupt Controller 4.2.2. Host AXI-4 Agent 4.2.3. Host CSR AXI-4 Lite Agent
4.3. Device Port x
4.3.1. ST Source Agent/ST Sink Agent/MM Agent 4.3.2. Descriptor Engine 4.3.3. Agent Controller 4.3.4. Constructor 4.3.5. Responder 4.3.6. Width Adaptation FIFO
4.8. Descriptor Handling x
4.8.1. Link Descriptor 4.8.2. Data Descriptor 4.8.3. Responder Descriptor 4.8.4. Descriptor Chain 4.8.5. Aligned and Unaligned Transfer Support
4.8.2. Data Descriptor x
4.8.2.1. Data Descriptor - H2D Streaming Transfer 4.8.2.2. Data Descriptor - D2H Streaming Transfer 4.8.2.3. Data Descriptor - H2D Memory Transfer
4.8.3. Responder Descriptor x
4.8.3.1. Responder Descriptor - H2D Streaming Transfer 4.8.3.2. Responder Descriptor - D2H Streaming Transfer 4.8.3.3. Responder Descriptor - H2D Memory Transfer
4.8.4. Descriptor Chain x
4.8.4.1. Descriptor Fetch and Status Update Mechanism
4.11. Transaction Flow x
4.11.1. General DMA Operation Flow 4.11.2. Host to Device (H2D) Flow 4.11.3. Device to Host (D2H) Flow 4.11.4. Soft Reset Handshake Flow
5. Interfaces x
5.1. Port List 5.2. DMA PCIe* Mode Interfaces 5.3. DMA SoC Mode Interfaces 5.4. Device Port Interfaces 5.5. Resets 5.6. Clocks
5.2. DMA PCIe* Mode Interfaces x
5.2.1. Application Packet Receive Interface 5.2.2. Application Packet Transmit Interface 5.2.3. Control Shadow Interface 5.2.4. Transmit Flow Control Credit Interface 5.2.5. Completion Timeout Interface 5.2.6. PCIe* Miscellaneous Signals 5.2.7. Control and Status Register Responder Manager Interface 5.2.8. Bursting Manager Interface
5.3. DMA SoC Mode Interfaces x
5.3.1. Host AXI-4 Memory Map Manager Interface 5.3.2. Host AXI-4 Lite CSR Memory Map Subordinate Interface 5.3.3. Interrupt Interface
5.4. Device Port Interfaces x
5.4.1. Device to Host <PORT#> AXI-ST Subordinate Interface 5.4.2. Device to Host <PORT#> Avalon-ST Sink Interface 5.4.3. Host to Device <PORT#> AXI-ST Manager Interface 5.4.4. Host to Device <PORT#> Avalon-ST Source Interface 5.4.5. Host to Device <PORT#> AXI-4 Manager Interface
6. HAL Driver for DMA SoC Mode  x
6.1. Descriptor Indexing  6.2. HAL Public API 
6.1. Descriptor Indexing  x
6.1.1. Data Descriptors  6.1.2. Responders 
6.2. HAL Public API  x
6.2.1. Software Features 6.2.2. intel_ssgdma.c  6.2.3. intel_ssgdma_global.c 6.2.4. intel_ssgdma_device_port.c  6.2.5. intel_ssgdma_descriptor.c 
7. Parameters x
7.1. DMA Settings 7.2. Device Port Settings 7.3. DMA PCIe Mode Settings 7.4. DMA SoC Mode Settings 7.5. Example Design
7.2. Device Port Settings x
7.2.1. H2D MM 7.2.2. H2D ST 7.2.3. D2H ST
8. Registers x
8.1. Global CSR 8.2. MSI-X Memory Space 8.3. Device Port Control Register
1. Product Discontinuance Notification
2. Terms and Acronyms
3. Introduction
4. Functional Description
5. Interfaces
6. HAL Driver for DMA SoC Mode 
7. Parameters
8. Registers
9. Document Revision History for the Scalable Scatter-Gather DMA Intel® FPGA IP User Guide

3.3. Resource Utilization

Table 3.  Resource Utilization for Selected Variations
DMA Mode Host Data Width DMA Channels ALMs Logic Registers M20Ks
DMA PCIe mode 128-bit

1 device port

  • 1 H2D MM port, 64-bit
 10,792 26,161 164
DMA PCIe mode 128-bit

2 device ports

  • 1 H2D ST port, AXI-ST, 64-bit
  • 1 D2H ST port, AXI-ST, 64-bit
 12,473 30,435 176

DMA PCIe mode

 128-bit
8 device ports
  • 4 H2D ST port, AXI-ST, 64-bit
  • 4 D2H ST port, AXI-ST, 64-bit
 31,373 79,002 346

DMA PCIe mode

 128-bit
2 device ports
  • 1 H2D ST port, AXI-ST, 128-bit
  • 1 D2H ST port, AXI-ST, 128-bit
 12,735 30,083 176

DMA PCIe mode

 128-bit
2 device ports
  • 1 H2D ST port, AXI-ST, 256-bit
  • 1 D2H ST port, AXI-ST, 256-bit
 13,679 32,923 184

DMA PCIe mode

 128-bit
2 device ports
  • 1 H2D ST port, AXI-ST, 512-bit
  • 1 D2H ST port, AXI-ST, 512-bit
 15,375 38,097 198

DMA PCIe mode

 256-bit
2 device ports
  • 1 H2D ST port, AXI-ST, 64-bit
  • 1 D2H ST port, AXI-ST, 64-bit
 15,152 38,564 220
DMA PCIe mode (with BAM enabled) 128-bit

2 device ports

  • 1 H2D ST port, AXI-ST, 64-bit
  • 1 D2H ST port, AXI-ST, 64-bit
 13,997 34,114 195
DMA PCIe mode (with unaligned access enabled) 128-bit

2 device ports

  • 1 H2D ST port, AXI-ST, 64-bit
  • 1 D2H ST port, AXI-ST, 64-bit
 16,932 39,149 197
DMA PCIe mode (with unaligned access enabled) 128-bit

8 device ports

  • 4 H2D ST ports, AXI-ST, 64-bit
  • 4 D2H ST ports, AXI-ST, 64-bit
 45,073 116,090 427
DMA PCIe mode (MRRS = 4096B) 128-bit
2 device ports
  • 1 H2D ST port, AXI-ST, 64-bit
  • 1 D2H ST port, AXI-ST, 64-bi

t

 13,694 32,206 596
DMA SoC Mode 256-bit

1 device port

  • 1 H2D MM port, 64-bit
 9,929 26,478 127
DMA SoC Mode 256-bit

2 device ports

  • 1 H2D ST port, AXI-ST, 64-bit
  • 1 D2H ST port, AXI-ST, 64-bit
 12,306 32,072 142
DMA SoC Mode 256-bit

8 device ports

  • 4 H2D ST ports, AXI-ST, 64-bit
  • 4 D2H ST ports, AXI-ST, 64-bit
 37,190 106,299 374
DMA SoC Mode 256-bit

2 device ports

  • 1 H2D ST port, AXI-ST, 128-bit
  • 1 D2H ST port, AXI-ST, 128-bit
 12,684 32,974 142
DMA SoC Mode 256-bit

2 device ports

  • 1 H2D ST port, AXI-ST, 256-bit
  • 1 D2H ST port, AXI-ST, 256-bit
 13,172 35,196 142
DMA SoC Mode 256-bit

2 device ports

  • 1 H2D ST port, AXI-ST, 512-bit
  • 1 D2H ST port, AXI-ST, 512-bit
 15,075 40,320 156
DMA SoC Mode (with unaligned access enabled) 256-bit

2 device ports

  • 1 H2D ST port, AXI-ST, 64-bit
  • 1 D2H ST port, AXI-ST, 64-bit
 17,067 43,505 160
DMA SoC Mode (with unaligned access enabled) 256-bit

8 device ports

  • 4 H2D ST port, AXI-ST, 64-bit
  • 4 D2H ST port, AXI-ST, 64-bit
 50,883 133,269 446
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