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. 23, 2010
Filed:
May. 18, 2004
Dharma R. Konda, Aliso Viejo, CA (US);
James D. Huey, Huntington Beach, CA (US);
Frank W. Campbell, Long Beach, CA (US);
Tuan A. Doan, Irvine, CA (US);
Dharma R. Konda, Aliso Viejo, CA (US);
James D. Huey, Huntington Beach, CA (US);
Frank W. Campbell, Long Beach, CA (US);
Tuan A. Doan, Irvine, CA (US);
QLOGIC, Corporation, Aliso Viejo, CA (US);
Abstract
A host bus adapter ('HBA') is provided with a programmable trace logic that can be enabled or disabled by firmware running on the HBA and if enabled can receive trace information from at least one processor, which is stored in a local memory buffer controlled by a local memory interface. A receive and transmit path processor data is traced and stored in the local memory buffer. The trace logic includes an arbitration module that receives trace data from plural sources and the trace data is stored in a first in first out based buffer before being sent to a direct memory access arbiter module and then to an external memory. Trace data as stored in the external memory includes a trace data source identity value, and a time stamp value indicating when data was collected.