Computer system, access method of peripheral component interconnect express terminal device, and device

Abstract

The present invention relates to an access method of peripheral component interconnect express device, a computer system, and a device. Message states of an access request sent out by a processor are monitored, a simulation response message of the access request is sent to the processor, when a response massage of the access request is not sent by the PCIe terminal device, so that the processor is enabled to confirm that the process which corresponds to the access request sent out before is finished, the timer which carries out timing for the access request is turned off, an access request in the buffer is cleared, processing in the processor is kept to carry out normally, and an MCE reset problem caused by access request accumulation in the processor is solved.

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 may be various peripheral devices interconnected with the CPU through the PCIe bus, such as a network card device or a solid state disk (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 and ...

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.

Images