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求助SRIO中DIRECT I/O的问题



 通过RX 接收到的包存在shared buffer中 然后通过VBSUM操做用DMA方式将包写入MEMORY,想求教这时候DMA是怎么配置的我看文档好像DIRECT I/O是直接写LSU寄存器完成数据传输,但包中的原址和目的地址是怎么写给给DMA。