Linux QDMA Software Architecture (PF/VF) - 1.0 English

Versal ACAP DMA and Bridge Subsystem for PCI Express Product Guide (PG344)

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Figure 1. Linux DMA Software Architecture

The QDMA driver consists of the following three major components:

  • Device control tool: Creates a netlink socket for PCIe device query, queue management, reading the context of a queue, etc.
  • DMA tool: Is the user space application to initiate a DMA transaction. You can use standard Linux utility dd or fio, or use the example application in the driver package.
  • Kernel space driver: Creates the descriptors and translates the user space function into low-level command to interact with the ACAP.