Access method, apparatus and system among multi-SoC nodes

Abstract

Embodiments of the invention provide an access method, apparatus and system among multi-SoC nodes. The method comprises: through an on-chip interconnection structure of a source SoC node, receiving an access request sent from a first device, wherein the access request carries an access address; determining an on-chip interconnection structure expansion unit interface corresponding to the access address according to a corresponding relation between the access address and the on-chip interconnection structure expansion unit interface by the on-chip interconnection structure of the source SoC node; and sending the access request to the on-chip interconnection structure through an on-chip interconnection structure expansion unit according to the determined on-chip interconnection structure expansion unit interface, and sending the access request to a target SoC node though the on-chip interconnection structure by the on-chip interconnection structure of the source SoC node. The first device of the source SoC node and a resource of the target SoC node are uniformly addressed in the same address space, so that access efficiency among SoC nodes is improved.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to an access method, device and system between multiple system-on-chip (System on Chip, hereinafter referred to as SoC) nodes. Background technique [0002] The SoC node includes a central processing unit (Central Processing Unit, hereinafter referred to as: CPU), a memory controller, an input / output (Input / Output, hereinafter referred to as: I / O) controller, a network card and a hard disk and other I / O controllers and devices, among which , I / O devices such as network cards and hard disks inside each SoC node can share resources among multiple SoC nodes. To perform resource sharing, the problem of access between multiple SoC nodes must first be solved. [0003] In the prior art, access between multiple SoC nodes is realized based on loosely coupled interconnection methods such as Ethernet and high-speed peripheral component interconnection (Peripheral Componen...

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Problems solved by technology

[0004] However, using the prior art method requires address mapping and complex protocol conversion, therefore, the access efficiency between multiple SoC nodes is not high

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