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I am using PCI-Express (PCIe) IP in an Arria® 10 device under the following conditions: How do I access the DMA Descriptor Controller Register?

I am using PCI-Express (PCIe) IP in an Arria® 10 device under the following conditions: How do I access the DMA Descriptor Controller Register?

  • Updated

<Configuration

- Application interface type : Avalon-MM with DMA 
- Hard IP mode : Gen2 x4, Interface 128bit,125MHz 
- Port type : Native endpoint

The DMA Descriptor Controller Register is accessed via BAR0 (RXM_BAR0) reserved on the IP.

Please refer to the following document for details: 
Arria® 10 or Cyclone® 10 GX Avalon® Memory Mapped (Avalon-MM) DMA Interface for PCI Express* Solutions User Guide

- 6.7.1. Read DMA Descriptor Controller Registers
https://docs.altera.com/r/docs/683425/18.0/arria-10-or-cyclone-10-gx-avalon-memory-mapped-avalon-mm-dma-interface-for-pci-express-solutions-user-guide/read-dma-descriptor-controller-registers
 

- 6.7.2. Write DMA Descriptor Controller Registers
https://docs.altera.com/r/docs/683425/18.0/arria-10-or-cyclone-10-gx-avalon-memory-mapped-avalon-mm-dma-interface-for-pci-express-solutions-user-guide/write-dma-descriptor-controller-registers

 Please review the following items regarding the DMA execution procedure.
- 6.7.4. Read DMA Example
https://docs.altera.com/r/docs/683425/18.0/arria-10-or-cyclone-10-gx-avalon-memory-mapped-avalon-mm-dma-interface-for-pci-express-solutions-user-guide/read-dma-example
 

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Category: PCI-Express 
Tools: - 
Device: Arria® 10

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