PCIe Device Position Mapping Across Multi-Layer Adapter Boards
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Solution Overview
Problem
The challenge of accurately positioning Peripheral Component Interconnect Express (PCIE) devices is exacerbated in systems with multiple layers of adapter boards due to duplicated physical slot numbers, leading to reduced positioning accuracy.
Innovation Solution
A method involving device information acquisition, physical slot number and PCIE bridge information determination, and position matching information generation using pre-established mapping relationships to uniquely identify the PCIE device's location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If identical adapter board designs are used across multiple layers for ease of reuse and maintenance, then manufacturing simplicity and maintainability are improved, but positioning accuracy deteriorates due to duplicated physical slot numbers
Solution Approach 1:
The patent segments the positioning identification into two independent parts: the physical slot number (which can be duplicated across layers for manufacturing simplicity) and the PCIE bridge information (which is unique to each device's hierarchical position). This segmentation allows the physical slot number to remain simple while the combined identifier provides precise positioning.
Solution Approach 2:
The patent adds a new dimension to the positioning identification by incorporating PCIE bridge information alongside the physical slot number. This transforms the one-dimensional physical slot number into a two-dimensional identifier combination, enabling unique positioning even when physical slot numbers are duplicated across multiple adapter board layers.
2Adaptability or versatility
If physical slot numbers are duplicated across multiple adapter board layers, then device reuse and maintenance are facilitated, but positioning accuracy deteriorates due to character string matching errors
Solution Approach 1:
The patent merges the physical slot number identification with the PCIE bridge information identification into a unified positioning method. By combining these two identification dimensions, the system achieves unique positioning for each PCIE device across multiple adapter board layers, preventing character string matching errors while maintaining adapter board reusability.
Solution Approach 2:
The PCIE bridge information acts as an intermediary element that resolves the ambiguity caused by duplicated physical slot numbers. This intermediary provides additional identification depth, allowing the system to distinguish between devices on different adapter board layers despite having identical physical slot number labels.
3Measurement precision
If unique physical slot numbers are assigned to all PCIE devices, then positioning accuracy is improved, but device complexity increases due to additional identification requirements
Solution Approach 1:
The patent performs preliminary action by pre-establishing the mapping relationship between PCIE bridge information and physical slot numbers during system initialization. This pre-mapping allows the positioning system to accurately identify devices without requiring complex real-time identification algorithms, thus achieving high positioning accuracy while controlling system complexity.
Data Source
AI summary
A Peripheral Component Interconnect Express (PCIE) device positioning method and apparatus, and a related device are provided. The PCIE device positioning method includes: acquiring device information of a target PCIE device, and determining a physical slot number and PCIE bridge information of the target PCIE device according to the device information; generating first position matching information according to the physical slot number and the PCIE bridge information; determining, according to a first mapping relationship, position information corresponding to the first position matching information, where the first mapping relationship includes a mapping relationship between the first position matching information of each PCIE device and the position information of each PCIE device; and determining, according to the position information, a position where the target PCIE device is located.