Method and apparatus for allocating resources based on type of PCI device, and medium

Abstract

The invention discloses a method and apparatus for allocating resources based on the type of a PCI device, and a medium. The method comprises the following steps: in an process of executing startup ofa BIOS, obtaining the information of a Switch chip captured in a PCI enumeration operation; then, judging whether the PCI device is connected with a CPU according to the information of the Switch chip; if yes, canceling an operation of allocating IO resources to the PCI device; and if no, allocating the IO resources and memory resources to the PCI device according to a predetermined allocation rule. In the method, whether the PCI device is connected with the CPU is judged according to the information of the Switch chip, and then whether the IO resources need to be allocated is determined, therefore, compared with the resource allocation method in the prior art, the method has the advantages that when the IO resources are insufficient, the allocation of the IO resources to the PCI device is selectively canceled, and the normal use of the PCI device can be guaranteed.

Description

Technical field [0001] The present invention relates to the technical field of PCI equipment, and in particular to a method, device and medium for allocating resources according to the type of PCI equipment. Background technique [0002] PCI devices mainly use two types of resources, one is IO resources, and the other is memory resources. Each PCI device needs to allocate different resource types according to the actual use type. For example, for Super IO chips, it only uses IO resources, but PCI devices such as network cards and consumer graphics cards use both IO resources and memory resources. [0003] In the specific implementation, since the IO resources provided during the boot process of the BIOS are limited and there is a 64k limit, the resource allocation is performed according to the 4K IO resources allocated to each PCI device. Therefore, when the PCI When the number of devices is 16 or more, the corresponding functions cannot be implemented. For example, when the PCI d...

AI Technical Summary

Problems solved by technology

[0002] PCI devices mainly use two types of resources, one is IO resources and the other is memory resources. Each PCI device needs to allocate different resource types according to the type of use actually used. For example, for a Super IO chip, it only uses IO resources, but PCI devices like network cards and consumer graphics cards use both IO resources and memory resources

[0003] In the specific implementation, since the provided IO resources are limited during the boot process of executing the BIOS, and there is a limit of 64k, and resource allocation is carried out according to the allocation of 4K IO resources for each PCI device, therefore, when the PCI When the number of devices is 16 or more, the corresponding functions cannot be realized. For example, when the PCI device is a graphics card, the graphics card cannot be used normally.

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