RapidIO network recursive enumeration method

Abstract

The invention pertains to the field of data communication, and relates to an RapidIO network recursive enumeration method. The invention provides an RapidIO network recursive enumeration networking method based on depth-first path weighting, the shortest communication path between a master machine and a slave machine in the RapidIO network is caculated, and an optimal path dynamic enumeration method which has advantages of simple structure, good adaptability and good reliability and can be used to support the change of external connection device. IDT Tsi578 is used as the RapidIO networking switchboard to realize the optimal RapidIO networking scheme based on the Tsi578 switchboard device. The method of the invention adopts the following technical scheme that in a system in which the RapidIO bus is used as the interconnection architecture, the RapidIO master machine mode is taken as the reference, and the route hop is taken as the weighted value to calculate the distances between each slave machine node in the RapidIO network and RapidIO master machine mode, for each slave machine mode that newly found, the shortest path between each slave machine mode and the RapidIO master machine mode is selected dynamically, and the route information table of each slave machine mode ID and the corresponding switchboard device Tsi578 is set according to the shortest path.

Description

Technical field: [0001] The patent of the present invention belongs to the field of data communication, and relates to a RapidIO network enumeration method. Background technique: [0002] The RapidIO specification is an open standard developed with the support of the RapidIO trade association. The International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) have approved the RapidIO interconnection specification as the ISO / IECDIS18372 standard, becoming the first embedded interconnection international Standard, RapidIO bus technology provides high-bandwidth, low-latency interconnection solutions for embedded system designs. Each device in the RapidIO network exchanges data based on the ID number. The ID number is dynamically assigned to the RapidIO address of each node in the network during the RapidIO network enumeration. The depth-first or breadth-first enumeration algorithm is commonly used. When there are multiple paths to...

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Problems solved by technology

[0003] Purpose of the present invention: the present invention provides a kind of RapidIO network recursive enumeration method that a kind of structure is simple, adaptability is strong, reliability is high, can support the change of external connection equipment, this method classifies RapidIO switch according to depth-first algorithm, records All routing paths between other RapidIO devices and RapidIO host nodes are calculated and selected, which effectively solves the problem that the optimal path cannot be selected by a single enumeration algorithm using depth-first or breadth-first, and supports star and ring RapidIO network enumeration of various topological structures such as cross network

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