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:
Nov. 16, 2010
Filed:
May. 04, 2006
Rahoul Puri, Los Altos, CA (US);
John E. Watkins, Sunnyvale, CA (US);
Arvind Srinivsan, San Jose, CA (US);
Babu R. Kandimalla, San Jose, CA (US);
Nimita Taneja, Castro Valley, CA (US);
Rahoul Puri, Los Altos, CA (US);
John E. Watkins, Sunnyvale, CA (US);
Arvind Srinivsan, San Jose, CA (US);
Babu R. Kandimalla, San Jose, CA (US);
Nimita Taneja, Castro Valley, CA (US);
Oracle America, Inc., Redwood Shores, CA (US);
Abstract
A method and apparatus for recovering from errors occurring during system bus transactions. An input/output device such as a network interface unit (NIU) issues read and write operations across a meta interface coupling the device to host bus (glue) logic. The host bus logic translates the operations into system bus transactions. The device maintains a set of reusable identifiers for identifying the operations, and a table maintained by the device or the host bus logic maps the operation identifiers to transaction identifiers identifying the system bus transactions spawned to perform the operations. If a bus transaction encounters an unrecoverable error, the host bus logic reports the error to the device and drops any further data received from other bus transactions performed for the same operation. The device marks the operation's identifier as dirty, to prevent its reuse. The operation identifier may be reused after software clears the error condition.