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:
Oct. 04, 2011
Filed:
Jan. 20, 2008
Rahoul Puri, Los Altos, CA (US);
Arvind Srinivasan, San Jose, CA (US);
Elisa Rodrigues, Union City, CA (US);
Rahoul Puri, Los Altos, CA (US);
Arvind Srinivasan, San Jose, CA (US);
Elisa Rodrigues, Union City, CA (US);
Oracle America, Inc., Redwood Shores, CA (US);
Abstract
A universal DMA (Direct Memory Access) engine can be dynamically configured to function in either a receive or transmit mode. DMAs are logically assembled and bound as needed, without limitation to a fixed, pre-determined number of receive engines and transmit engines. Because a DMA engine may be dynamically assembled to support the flow of data in either direction, varied usage models are enabled, and components used to assemble a receive DMA engine for one application may be subsequently used to assemble a transmit engine for a different application. An application may request a specific number of each type of engine, depending on the nature of its input/output traffic. The number of receive or transmit engines can be dynamically increased or decreased without suspending or rebooting the host. A universal DMA architecture provides a unified software framework, thereby decreasing the complexity of the software and the hardware gate count cost.