C2H Completion - 3.4 English

Versal Adaptive SoC CPM DMA and Bridge Mode for PCI Express Product Guide (PG347)

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3.4 English

When the DMA write of the data payload is done, the QDMA writes the CMPT packet into the CMPT queue. Besides the user defined data, the CMPT packet also includes some other information, such as error, color, and the length. It also has a desc_used bit to indicate if the packet consumes a descriptor. A C2H data packet of immediate-data or marker type does not consume any descriptor.