Compression/decompression accelerator protocol for software/hardware integration

US9176977B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Hartmut Droege · Stuttgart, DE
• Thomas Fuchs · Bietigheim-Bissingen, DE
• Frank Haverkamp · Wangen im Allgäu, DE
• Reiner Rieke · Althengstett, DE
• Michael Ruettger · Aschaffenburg, DE
• Anthony T. Sofia · East Fishkill, US
• Joerg-Stephan Vogt · Holzgerlingen, DE
• Gunnar von Boehn · Sulz am Neckar, DE
• Peter B. Yocom · Lagrangeville, US

Key dates

• Filing date: Sep 30, 2014
• Grant date: Nov 3, 2015
• Expiry date: Sep 30, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F3/0656
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

Embodiments relate to providing a data stream interface for offloading the inflation/deflation processing of data to a stateless compression accelerator. An aspect includes transmitting a request to inflate or deflate a data stream to a compression accelerator. The request may include references to an input buffer for storing input data from the data stream, an output buffer for storing processed input data, and a state data control block for storing a stream state. The stream state is provided to the compression accelerator to continue processing the data stream responsive to the request being a subsequent request. The compression accelerator is instructed to store a current stream state in the state data control block responsive to the request being a non-final request. Accordingly, the current stream state is received from the compression accelerator responsive to the request being a non-final request. The processed input data is received from the compression accelerator.