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:
Jan. 20, 2009
Filed:
Aug. 11, 2006
Mark D. Hummel, Franklin, MA (US);
Michael J. Haertel, Sunnyvale, CA (US);
Andrew W. Lueck, Austin, TX (US);
Mitchell Alsup, Austin, TX (US);
William Alexander Hughes, San Jose, CA (US);
Geoffrey S. Strongin, Austin, TX (US);
Mark D. Hummel, Franklin, MA (US);
Michael J. Haertel, Sunnyvale, CA (US);
Andrew W. Lueck, Austin, TX (US);
Mitchell Alsup, Austin, TX (US);
William Alexander Hughes, San Jose, CA (US);
Geoffrey S. Strongin, Austin, TX (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
In one embodiment, an input/output memory management unit (IOMMU) comprises a cache to cache translation data from memory; and a control unit coupled to the cache. The control unit is configured to implement address translation and memory protection for memory requests sourced by one or more input/output (I/O) devices. The memory requests sourced by the I/O devices travel in one or more first virtual channels, and the control unit is configured to transmit memory requests sourced by the control unit in at least a second virtual channel separate from the first virtual channels.