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:
Dec. 20, 2016
Filed:
Dec. 21, 2012
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Gurjeet S. Saund, Saratoga, CA (US);
Harshavardhan Kaushikkar, San Jose, CA (US);
Benjamin K. Dodge, San Jose, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 13/00 (2006.01); G06F 3/00 (2006.01); G06F 13/38 (2006.01); G06F 13/28 (2006.01); H04L 12/801 (2013.01);
U.S. Cl.
CPC ...
G06F 13/385 (2013.01); G06F 13/28 (2013.01); H04L 47/10 (2013.01);
Abstract
Systems and methods for preventing excessive buffering of transactions in a coherence point. The coherence point uses a lookahead mechanism to determine if there are enough credits from the memory controller for forwarding the outstanding transactions stored in the IRQ. If there are not enough credits, then the coherence point prevents the switch fabric from forwarding additional transactions to the coherence point. By preventing excessive buffering in the IRQ, the QoS-based ordering of transactions performed by the switch fabric is preserved.