Method and device for disconnecting link between PCIe (peripheral component interface express) equipment and host computer
A device and mainframe technology, applied in the computer field, can solve problems affecting mainframe business, etc.
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[0094] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0095] The embodiment of the present invention provides an application scenario of a method for disconnecting the link between the PCIe device and the host, see Picture 1-1 , when the host is only connected to one IO device, the host is directly connected to the IO device through the RP port; when the host is connected to multiple IO devices, the host is connected to multiple IO devices through PCIeSW (Switch).
[0096] Among them, the IO device includes a PCIe device, the PCIe device includes an EP (Endpoint, end node) device, the PCIeSW includes a UP (UpstreamPort, upstream port) and multiple DPs (DownstreamPort, downstream ports), and the PCIeSW is connected to the CPU of the host through the UP, Connect to the EP device of the PCIe...
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