Initialization Method of Fast Peripheral Component Interconnect Interface Card

Abstract

The present invention provides an initialization method of a fast peripheral component interconnection interface card. The method includes: a processing unit initializes a first initialization parameter included in a basic input output system code according to a preset first value of a flag in a boot program. The fast peripheral component interconnection interface card inserted into the fast peripheral component interconnection interface slot, the processing unit sets the aforementioned flag according to the initialized fast peripheral component interconnection interface card in the boot program, so that the flag has the first value or The second value, the processing unit judges whether the express peripheral component interconnection interface card needs to be re-initialized after the initialization in the boot procedure, and when the express peripheral component interconnection interface card needs to be re-initialized, the processing unit according to the set flag. The binary BIOS code includes a second initialization parameter to reinitialize the Express Peripheral Component Interconnect Interface card.

Description

technical field [0001] The invention relates to an initialization method of a fast peripheral component interconnection interface card. Background technique [0002] Peripheral Component Interconnect Express (PCI Express; PCI-E) interface is one of the computer bus interfaces. It follows the concept and communication standard of the old PCI interface, but the PCI-E interface has a faster transmission speed. For example, the transmission speed of the first-generation PCI-E interface is 2.5 GT / s, the transmission speed of the second-generation PCI-E interface is 5 GT / s, and the transmission speed of the third-generation PCI-E interface, which is quite popular today, has Up to 8 GT / s. [0003] However, as the transmission speed of the PCI-E interface increases, the loss of the PCI-E signal transmitted by the PCI-E interface becomes more serious. Generally, the length of the PCI-E signal can be reduced by limiting the length of the PCI-E signal. Loss, but limiting the length o...

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Problems solved by technology

[0003] However, as the transmission speed of the PCI-E interface increases, the loss of the PCI-E signal transmitted by the PCI-E interface becomes more serious. Generally, the length of the PCI-E signal can be reduced by limiting the length of the PCI-E signal. Loss, but limiting the length of the traces will cause layout restrictions on the PCI-E interface card on the motherboard; moreover, another way can be improved by improving the circuit board material of the PCI-E interface card or improving the PCI-E interface plug The materials used in the slots are used to reduce the loss of PCI-E signals, but the use of improved materials will increase the production costs of PCI-E interface cards and PCI-E interface slots

Therefore, in order not to limit the layout of the PCI-E interface card and not increase the production cost, the conventional technology also proposes to adjust the initialization parameters of the PCI-E interface card and replace the unadjusted initialization parameters with the adjusted initialization parameters, hoping to improve the signal. However, the adjustment of initialization parameters can only be done manually, that is, after human judgment is required, it is very inconvenient for engineers to control and adjust initialization parameters; in addition, PCI-E interface cards may be used in different signal transmissions Environment, even if the initialization parameters are adjusted, it is only adjusted for a specific transmission environment and a set of adjusted initialization parameters cannot be applied to other transmission environments. Using initialization parameters that do not match the transmission environment cannot improve the aforementioned signal loss In severe cases, errors will still occur when the PCI-E interface card transmits signals

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