什么是Nonposted Write和Posted Write?最近在看有关dma方面的技术手册,经常碰到这两个名词,它们到底是什么意思啊?
谢谢!
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你好,
下面是网上找到的关于PCIe上Non-Posted transactions和Posted transactions,概念是一样的。
Non-Posted transactions are ones where the requester expects to receive a completion Transaction Layer Packet (TLP) from the device completing the request.
Posted transactions are ones where the requester does not expect to and will not receive a completion Transaction Layer Packet (TLP). If the write completer encounters an error, the requester will not know about it.