Peripheral Interface Alert Message for Error Recovery
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Solution Overview
Problem
Errors during information exchange between upstream and downstream devices via peripheral interfaces, such as unreadable messages due to noise, are not effectively addressed, necessitating a method to notify downstream devices of errors and facilitate error correction or debugging.
Innovation Solution
The implementation of a new alert message system using a Vendor Defined Message Type-1 PCI Express packet, which includes error details, is sent from the upstream device to the downstream device via the peripheral interface, allowing the downstream device to reset or recover from errors and log/debug the issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If error detection is implemented during information exchange via peripheral interface, then reliability of data transmission is improved, but device complexity increases due to additional error notification and recovery mechanisms
Solution Approach 1:
The patent implements a feedback mechanism where the upstream device monitors incoming messages for errors and sends alert messages back to the downstream device when errors are detected. This feedback loop enables automatic error notification and recovery, improving transmission reliability while maintaining manageable device complexity through standardized alert message protocols.
Solution Approach 2:
The patent introduces alert messages as an intermediary communication mechanism between upstream and downstream devices. These alert messages serve as mediators that carry error information from the upstream device to the downstream device, enabling error notification without requiring complex direct intervention mechanisms between the devices.
2Ease of repair
If error details are transmitted to downstream device, then ease of debugging is improved, but loss of time increases due to additional message transmission and processing
Solution Approach 1:
The patent incorporates error details directly within the alert message itself, rather than requiring separate diagnostic exchanges. The alert message is pre-populated with comprehensive error information (error type, transaction ID, payload data) before transmission, allowing the downstream device to immediately diagnose and address issues without time-consuming additional communication rounds.
Data Source
AI summary
According to some embodiments, a message generated by a downstream device is received at upstream device. The message may, for example, be received via a peripheral interface and may not require a response. It may then be determined that an error is associated with the message, and an alert message may be sent from the upstream device to the downstream device via the peripheral interface.