Method and system for queuing a request by a processor to access a shared resource and granting access in accordance with an embedded lock ID
US8918791B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2011 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Dec 24, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/526
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hardware-based method is provided for allocating shared resources in a system-on-chip (SoC). The SoC includes a plurality of processors and at least one shared resource, such as an input/output (IO) port or a memory. A queue manager (QM) includes a plurality of input first-in first-out memories (FIFOs) and a plurality of output FIFOs. A first application writes a first request to access the shared resource. A first application programming interface (API) loads the first request at a write pointer of a first input FIFO associated with the first processor. A resource allocator reads the first request from a read pointer of the first input FIFO, generates a first reply, and loads the first reply at a write pointer of a first output FIFO associated with the first processor. The first API supplies the first reply, from a read pointer of the first output FIFO, to the first application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.