Processing system, interprocessor communication method, and shared resource management method

Abstract

The method provides a processing system. The system includes a plurality of processors which independently execute instructions, and a plurality of registers corresponding to the plurality of processors. Each of the plurality of registers is configured to set a first register bit for the other processors except the corresponding processor, and the other processors can perform write operation on the first register bit set for the other processors so as to indicate event requirements; and each processor in the plurality of processors is configured to acquire the event requirements of the other processors on the processor by reading the first register bit of the corresponding register. Therefore, an interprocessor communication module is established for a plurality of processors in a processing system.

Description

technical field [0001] The present invention relates to a processing system, and more specifically, relates to an inter-processor communication technology and a shared resource management technology of a processing system including multiple processors. Background technique [0002] The vehicle-mounted chip is usually made into a heterogeneous SOC (System-on-a-Chip, System-on-a-Chip) chip containing multiple processors due to the integration of multiple functions. These processors are secure CPUs, including application CPUs, DSPs, and various self-developed accelerators. [0003] In order to better complete system-level tasks, each processor needs to maintain communication with other processors, that is, inter-processor communication, in addition to completing its own work. The improvement of communication efficiency between processors is one of the key factors to improve the performance of the whole SOC. [0004] There are generally two ways of communicating between proces...

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Problems solved by technology

In this way, because the processor needs to constantly query the state, it causes a waste of processor resources

Another way is to periodically raise interrupts through timers. When each processor generates an interrupt, it queries the memory, which can reduce the waste of processor resources, but it needs to set up many timers to do this work.

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