The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 2010
Filed:
Dec. 19, 2006
Douglas M. Freimuth, New York, NY (US);
Renato J. Recio, Austin, TX (US);
Claudia A. Salzberg, Austin, TX (US);
Steven M. Thurber, Austin, TX (US);
Jacobo A. Vargas, Cedar Park, TX (US);
Douglas M. Freimuth, New York, NY (US);
Renato J. Recio, Austin, TX (US);
Claudia A. Salzberg, Austin, TX (US);
Steven M. Thurber, Austin, TX (US);
Jacobo A. Vargas, Cedar Park, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A mechanism is provided for communication between host systems using a queuing system and shared memories. Memory address spaces of the host systems are initialized such that endpoints may be accessible by root complexes across host systems. These memory address spaces may then be used to allow system images, and their corresponding applications, associated with these root complexes to communicate with the endpoints using a queuing system. Such a queuing system may comprise queue structures having doorbell structures for providing information about the queue entries in the queue structures. Queue elements may be generated and added to the queue structures, and the doorbell structure may be written to, in order to thereby inform an endpoint or root complex that queue elements are available for processing. DMA operations may be performed to retrieve the queue elements and the data corresponding to the queue elements.