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. 29, 2013
Filed:
Feb. 13, 2012
Nobuo Yagi, Upland, CA (US);
Nobuo Yagi, Upland, CA (US);
Hitachi, Ltd., Tokyo, JP;
Abstract
A root port connection functioning as a PCI express bridge, and having a PCI express path constituting a PCI express tree having a PCI express device or switch; when detecting a failure on a PCI express path, a PCI express device or switch transmits a failure signal; the root port transmits an SMI responsive to the failure signal; the CPU executes the BIOS responsive to the SMI; the BIOS collects a log of the PCI express path where failure is detected, analyzes the collected log to judge failure type, and upon a fatal failure on the PCI express path, resets the PCI express tree downstream of the root port that received the failure signal, and upon a non-fatal failure on the PCI express path, resets the PCI express device in which the failure occurred; and the CPU closes the reset PCI express device by executing the device driver.