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Systems and methods for maintaining an order of read and write transactions in a computing system

  • US 9,229,896 B2
  • Filed: 12/21/2012
  • Issued: 01/05/2016
  • Est. Priority Date: 12/21/2012
  • Status: Active Grant
First Claim
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1. A bridge circuit comprising control logic, wherein the control logic is configured to:

  • maintain a pair of counters for each agent of a plurality of agents, wherein each pair of counters comprises a write counter and a read counter, wherein the write counter tracks a number of outstanding write transactions for a respective agent, and wherein the read counter tracks a number of outstanding read transactions for the respective agent;

    forward a read transaction from a given agent out of the bridge circuit only if the write counter for the given agent is equal to zero; and

    forward a write transaction from the given agent out of the bridge circuit only if the read counter for the given agent is equal to zero.

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