Robust hardware/software error recovery system

摘要

A method for error detection and recovery is provided in which a host controller and host software collaborate together. The host controller may: detect an error condition, set an error interrupt or register, and/or halt task execution or processing at the host controller. The host software may: detect an error condition as a result of the host controller having set the error interrupt or register; performs error handling, and clears the error condition. The host controller then resumes execution or processing of tasks upon detecting that error condition has been cleared by the host software.

主权项

1. A host controller, comprising:
an interface to access one or more registers; a processing circuit coupled to the interface and adapted to
set an error register upon detection, by host controller hardware, of an error condition in the processing of tasks;halt task execution or processing of tasks by host controller hardware;resume execution or processing of tasks, by host controller hardware, upon detection that the error condition has been cleared by a host software operating at the processing circuit.