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:
Jul. 15, 2014
Filed:
Dec. 09, 2011
Auto-ordering of strongly ordered, device, and exclusive transactions across multiple memory regions
Jason Lawrence Panavich, Raleigh, NC (US);
James Norris Dieffenderfer, Apex, NC (US);
Thomas Andrew Sartorius, Raleigh, NC (US);
Thomas Philip Speier, Raleigh, NC (US);
Jason Lawrence Panavich, Raleigh, NC (US);
James Norris Dieffenderfer, Apex, NC (US);
Thomas Andrew Sartorius, Raleigh, NC (US);
Thomas Philip Speier, Raleigh, NC (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Efficient techniques are described for controlling ordered accesses in a weakly ordered storage system. A stream of memory requests is split into two or more streams of memory requests and a memory access counter is incremented for each memory request. A memory request requiring ordered memory accesses is identified in one of the two or more streams of memory requests. The memory request requiring ordered memory accesses is stalled upon determining a previous memory request from a different stream of memory requests is pending. The memory access counter is decremented for each memory request guaranteed to complete. A count value in the memory access counter that is different from an initialized state of the memory access counter indicates there are pending memory requests. The memory request requiring ordered memory accesses is processed upon determining there are no further pending memory requests.