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. 12, 2022
Filed:
Mar. 26, 2020
Applicant:
Teledyne Lecroy Oakgate, Inc., Thousand Oaks, CA (US);
Inventors:
Assignee:
TELEDYNE LECROY, INC., Thousand Oaks, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/28 (2006.01); G06F 12/10 (2016.01); G06F 13/42 (2006.01); G06F 11/30 (2006.01); G06F 11/34 (2006.01); G06F 11/22 (2006.01);
U.S. Cl.
CPC ...
G06F 13/28 (2013.01); G06F 11/2221 (2013.01); G06F 11/3037 (2013.01); G06F 11/3485 (2013.01); G06F 12/10 (2013.01); G06F 13/4282 (2013.01); G06F 2213/0026 (2013.01);
Abstract
A method for detecting a Direct Memory Access (DMA) address capability at high address values when testing PCIe devices is disclosed. The method includes enabling an input/output (I/O) memory management unit (IOMMU); remapping physical addresses to virtual addresses at a high end of an address range; adding a peripheral component interconnect express (PCIe) device; and mapping physical memory addresses to high value memory addresses.