A PCIE hot-plug control method and device
CN116644019BActive Publication Date: 2026-06-30GUANGZHOU WUZHOU INFORMATION TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGZHOU WUZHOU INFORMATION TECH
- Filing Date
- 2023-06-07
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
Existing PCIe hot-swapping technology requires manual confirmation of insertion and removal, resulting in additional uncontrollable delays and increasing system failure recovery time.
Method used
By setting a safety delay, the insertion and removal process of PCIe devices is automatically controlled, avoiding human-computer interaction confirmation and achieving accidental hot-swapping.
Benefits of technology
It reduces system failure recovery time, improves the efficiency and applicability of hot-swapping PCIe interface card devices, and reduces operational complexity.
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Smart Images
Figure CN116644019B_ABST
Abstract
This invention discloses a PCIe hot-swapping control method and apparatus, comprising: determining whether a PCIe device is inserted from a PCIe interface card slot based on the detected operation and presence status of the PCIe interface card; if the PCIe device is inserted from the PCIe interface card slot, automatically powering on the PCIe interface card slot, enabling the PCIe reference clock, and automatically activating the PCIe link after a configurable first safety delay; and disabling the global reset signal after a configurable second safety delay to enable the PCIe device to search for and load the corresponding device driver; if the PCIe device is removed from the PCIe interface card slot, disabling the PCIe link, automatically disabling the PCIe reference clock after a configurable third safety delay, and automatically powering off the PCIe interface card slot after a configurable fourth safety delay to achieve safe hot-swapping. This invention improves the efficiency of hot-swapping PCIe interface card devices, thereby reducing device failure recovery time.
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