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:
Mar. 31, 2015
Filed:
Mar. 30, 2012
Alan Lee Taylor, Cary, NC (US);
Paul T. Mcgrath, Raleigh, NC (US);
Miles A. DE Forest, Bahama, NC (US);
Dayanand Suldhal, New Canaan, CT (US);
Nagapraveen Veeravenkata Seela, Cary, NC (US);
Samuel Lee Mullis, Ii, Raleigh, NC (US);
Alan Lee Taylor, Cary, NC (US);
Paul T. McGrath, Raleigh, NC (US);
Miles A. de Forest, Bahama, NC (US);
Dayanand Suldhal, New Canaan, CT (US);
Nagapraveen Veeravenkata Seela, Cary, NC (US);
Samuel Lee Mullis, II, Raleigh, NC (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
In a data storage system, a fixture communication channel is created for communications between a fixture and another component, where the fixture is a component of a device driver that provides extended input/output functionality with respect to one or more storage devices. A handle identifies the fixture communication channel, and callbacks are registered with a driver handler and reference callback functions of the fixture. Fixture communication messages each include the handle and a message-specific operation code for an operation to be performed by the fixture, and each is conveyed by (1) issuing a fixture-control input/output control command to the handler that includes the handle and message-specific operation code, and (2) at the handler, using the handle and message-specific operation code to select a callback and invoke a corresponding callback function of the fixture.