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Optimized configurable scheme for demand based resource sharing of request queues in a cache controller

  • US 6,782,455 B2
  • Filed: 05/23/2002
  • Issued: 08/24/2004
  • Est. Priority Date: 06/30/2000
  • Status: Expired due to Fees
First Claim
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1. A method comprisingdetecting a core request;

  • detecting a writeback request;

    prioritizing the writeback entry and an incoming core request;

    determining if any entries are available in a cache controller;

    allocating a first entry for a writeback eviction;

    allocating an entry for the incoming core request if a second entry is available;

    redispatching the incoming core request if no additional entries are available;

    determining status of a register bit within a register capable of being one of set and cleared, and dynamically selecting between one of a cache management scheme based on a maximum number of programmable writeback entries and a cache management scheme allowing both writeback entries and incoming core requests to be allocated based on priority based on said determined status of said register bit.

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