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:
Feb. 27, 2024
Filed:
Dec. 06, 2021
Applicant:
Arm Limited, Cambridge, GB;
Inventor:
Tessil Thomas, Cambridge, GB;
Assignee:
Arm Limited, Cambridge, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 13/24 (2006.01); G06F 13/42 (2006.01); G06F 12/02 (2006.01); G06F 13/16 (2006.01); G06F 13/40 (2006.01);
U.S. Cl.
CPC ...
G06F 13/4221 (2013.01); G06F 12/0238 (2013.01); G06F 13/1673 (2013.01); G06F 13/404 (2013.01); G06F 13/4045 (2013.01);
Abstract
A data processing apparatus is provided, that includes communication configured for receiving, from an origin Peripheral Component Interconnect Express (PCIe) device, a translated PCIe packet comprising a destination field that comprises a physical address of a destination PCIe device. Permission circuitry transmits a permission check packet, separate to the translated PCIe packet, to a root port to determine whether the origin PCIe device has permission to access the destination PCIe device. Buffer circuitry stores the translated PCIe packet until a response to the permission check packet is received.