System and method to detect and recover from inoperable device management bus

US10853204B2 · kind B2 · utility

Assignee

• Dell Products L.P. · US

Inventors

• Rama Rao Bisa · Kanchinakote, IN
• Chitrak Gupta · Kanchinakote, IN
• Mohan Murali Gurram · Bengaluru, IN
• Komal Dhote · Dhamtari, IN
• Suresh Vijaykumar · Chennai, IN
• Prasanna Kumar Sahoo · Bengaluru, IN

Key dates

• Filing date: Oct 26, 2018
• Grant date: Dec 1, 2020
• Expiry date: Apr 12, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2213/0016
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Embodiments are described for detecting and recovering from an inoperable device management bus. A remote management controller is configured to offload device management bus transactions that use a messaging protocol. The messing protocol transactions are offloaded to a bus protocol controller that is responsible for managing bus operations using the messaging protocol. The bus protocol controller updates a set of bus status counters stored in a shared memory based on the processing of the offloaded messaging protocol transactions. The remote management controller processes device management bus transactions that use a bus protocol and updates the bus status counters based on the status of the bus protocol transactions. The remote management controller determines the status of the device management bus based on the bus status counters in shared memory, if the device management bus is inoperable, resets the remote management controller.