基于PCIE总线架构的DMA控制器设计

Design of DMA Controller Based on PCIE Bus Architecture

阐述一种适用于PCIE硬件加速卡结构的DMA控制器的设计,该控制器支持由流式数据传输向地址数据传输的转换,它由PC端配置启动,通过读取主机内存中的描述符链表来主动发起分散数据块的连续传输,提供复数的双向DMA传输通道。

This paper expounds the design of a DMA controller suitable for PCIE hardware acceleration card structure is proposed.The controller supports the conversion from streaming data transmission to address data transmission,and is started by the configuration of PC.By reading the list of descriptors in the host memory,the controller initiatively initiates the continuous transmission of scattered data blocks and provides a complex two-way DMA transmission channel.