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Switching apparatus and method for providing shared I/O within a load-store fabric

  • US 7,174,413 B2
  • Filed: 04/01/2006
  • Issued: 02/06/2007
  • Est. Priority Date: 01/21/2003
  • Status: Active Grant
First Claim
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1. A method for interconnecting independent operating system domains to a shared I/O endpoint within a load-store fabric, comprising:

  • via first ports, first communicating with each of the independent operating system domains according to a protocol that provides exclusively for a single operating system domain within the load-store fabric;

    via a second port, second communicating with the shared I/O endpoint according to a variant of the protocol to enable the shared I/O endpoint to associate a prescribed operation with a corresponding one of the independent operating system domains, said second communicating comprising;

    encapsulating an OS domain header within a transaction layer packet that otherwise comports with the protocol, wherein the value of the OS domain header designates the corresponding one of the operating system domains; and

    via core logic within a switching apparatus, mapping the independent operating system domains to the shared I/O endpoint.

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