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. 05, 2010
Filed:
Dec. 10, 2009
Mark D. Hummel, Franklin, MA (US);
Geoffrey S. Strongin, Austin, TX (US);
Mitchell Alsup, Austin, TX (US);
Michael Haertel, Sunnyvale, CA (US);
Andrew W. Lueck, Austin, TX (US);
Mark D. Hummel, Franklin, MA (US);
Geoffrey S. Strongin, Austin, TX (US);
Mitchell Alsup, Austin, TX (US);
Michael Haertel, Sunnyvale, CA (US);
Andrew W. Lueck, Austin, TX (US);
GLOBALFOUNDRIES Inc., Grand Cayman, KY;
Abstract
In an embodiment, an input/output (I/O) memory management unit (IOMMU) comprises at least one memory configured to store translation data; and control logic coupled to the memory and configured to translate an I/O device-generated memory request using the translation data. The translation data corresponds to one or more device table entries in a device table stored in a memory system of a computer system that includes the IOMMU, wherein the device table entry for a given request is selected by an identifier corresponding to the I/O device that generates the request. The translation data further corresponds to one or more I/O page tables, wherein the selected device table entry for the given request includes a pointer to a set of I/O page tables to be used to translate the given request.