Computer system, method for access to high-speed peripheral component interconnection terminal equipment, and device

Abstract

The embodiment of the invention relates to a method for access to high-speed peripheral component interconnection terminal equipment, a computer system and a device. The message state of an access request sent by a processor is monitored, a simulation response message of the access request is sent to the processor when it is determined that PCIe terminal equipment does not send a response message of the access request, so that the processor can determine that a process corresponding to a previous access request is finished according to the simulation response message, and then a timer for timing the access request is closed and the cached access request is removed; in this way, normal processing inside the processor is maintained, and the problem of MCE restoration caused by accumulation of access requests in the processor is avoided.

Description

technical field [0001] The embodiment of the present invention relates to computer technology, in particular to a high-speed peripheral component interconnection endpoint device access method, computer system and device. Background technique [0002] The abbreviation of Peripheral Component Interconnect Express (PCIe) is a high-performance system bus used on computing and communication platforms. The PCIe bus is widely used in interconnection systems of CPUs and peripheral devices, and as a core business channel in computing and storage devices. There can be many kinds of peripheral devices interconnected with the CPU through the PCIe bus, such as network card devices or solid state disks (Solid State Disk, SSD), etc., and such devices are collectively referred to as PCIe endpoint devices in this document. [0003] The PCIe bus is widely used as the bus interface of servers or storage systems. When the system is running normally, due to the requirements of online expansion ...

AI Technical Summary

Problems solved by technology

However, in recent years, the PCIe bus has gradually developed from the interconnection within the system to the interconnection between systems. The number of external cables and other applications has increased, and the cables are easy to fall off abnormally, and PCIe endpoint devices are abnormally offline without prior notice.

In addition, it is more and more common for users to directly connect to the system using SSDs. Due to user habits, users may directly insert and remove SSDs without prior notice.

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