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如题
追问：
SRIO中Direct I/O 模式使用了那种内部DMA？？EDMA??PacktDMA??还是向6455一样有属于SRIO的dma
SRIO有dio和message两种方式；
dio使用的是LSU寄存器；
message使用的是自带的CPPI和QMMS，就是packetdma。
多谢！
