Queue a DMA PUT to transfer the buffer back to main memory.

对DMA PUT 进行排队，从而将缓冲区传输回主内存。

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Wait for, process, and store back the data in the buffer.

等待、处理并将数据存储回缓冲区。

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Wait for, process, and store back the data in the buffer.

等待、处理并将数据存储回缓冲区。

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