Part Number:AM6441
请问一下可以帮我确认一下以下两个问题吗?
针对cpsw网卡,一个网卡管理2个port这种使用场景,是每个port使用不同的Dma,还是Dma是共用的?
Dma看手册是有中断功能,收到数据包之后,是进入了网卡的中断处理号还是Dma的中断号?
手册中有DMA的描述暂时只找到以下信息
Shine:
我需要和产品线工程师确认一下。
,
Shine:
请看下面e2e工程师的回复。
I recommend looking at the this figure in the AM64 technical reference manual, Figure 12-346. CPSW_3G Block Diagram.
This shows the external port FIFOs will funnel network traffic destined for the host through the CPPI FIFO.
The CPSW only works with DMA so it will be a DMA interrupt as described in the AM64 technical reference manual.
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1274549/am6441-cpsw-dma-interrupt