Method and apparatus for distributing interrupts in a symmetric

Details Method and apparatus for distributing interrupts in a symmetric Method and apparatus for distributing interrupts in a symmetric

1996-08-20

1999-08-31

An, Meng-Ai T.

Electrical computers and digital data processing systems: input/

Interrupt processing

710261, 710262, 710263, 710264, 710265, 710266, 710113, 395733, 395734, 395737, 395739, 395293, G06F 1300

Patent

active

059448091

ABSTRACT:
A distributed interrupt controller system for use in a multiprocessor environment, having at least two local programmable interrupt controllers (LOPICs) coupled to at least one central programmable interrupt controller (COPIC) via a dedicated bus. One of the at least one COPICs functions as a master arbiter, while the LOPICs, each of which may be integrated with its corresponding processing unit, and other non-master COPICs are treated as bus agents. Bus grant is achieved by a "round robin" arbitration protocol. For distributed delivery of interrupts, the master arbiter compares a current-task-priority-register value associated with each bus agent to determine the agent that is least busy for delivery of the interrupt thereto.

REFERENCES:
patent: 5283904 (1994-02-01), Carson et al.
patent: 5410710 (1995-04-01), Sarangdhar et al.
patent: 5434997 (1995-07-01), Landry et al.
patent: 5437042 (1995-07-01), Culley et al.
patent: 5446910 (1995-08-01), Kennedy et al.
patent: 5530891 (1996-06-01), Gephardt et al.
patent: 5555420 (1996-09-01), Sarangdhar
patent: 5555430 (1996-09-01), Gephardt et al.
patent: 5613128 (1997-03-01), Nizar et al.
patent: 5619706 (1997-04-01), Young
patent: 5721931 (1998-02-01), Gephardt et al.
patent: 5727217 (1998-03-01), Young
Hewlett Packard; "White Paper on Multiprocessing"; Jun. 1995; pp. 1-11.
Intel; "Pentium Processor Integrated APIC"; pp. 19-4 through 19-40.
Advanced Micro Devices and Cyrix Corporation; AMD web site; "The Open Programmable Interrupt controller (PIC) Register Interface Specification Revision 1.2", Oct. 1995; pp.1-24.
Cyrix Technical Brief; "OpenPIC.TM. Architecture"; pp. 1-2.
AMD News Release; "Advanced Micro Devices and Cyrix Jointly Develop OpenPIC.TM. Technology Standard"; Jun. 4, 1996; pp. 1-2.

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