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:
Oct. 01, 2013
Filed:
Jun. 30, 2011
Susan K. Candelaria, Tucson, AZ (US);
Scott M. Carlson, Tucson, AZ (US);
Daniel F. Casper, Poughkeepsie, NY (US);
John R. Flanagan, Poughkeepsie, NY (US);
Roger G. Hathorn, Tucson, AZ (US);
Matthew J. Kalos, Tucson, AZ (US);
Louis W. Ricci, Hyde Park, NY (US);
Dale F. Riedy, Poughkeepsie, NY (US);
Cynthia Sittmann, Webster Groves, MO (US);
Susan K. Candelaria, Tucson, AZ (US);
Scott M. Carlson, Tucson, AZ (US);
Daniel F. Casper, Poughkeepsie, NY (US);
John R. Flanagan, Poughkeepsie, NY (US);
Roger G. Hathorn, Tucson, AZ (US);
Matthew J. Kalos, Tucson, AZ (US);
Louis W. Ricci, Hyde Park, NY (US);
Dale F. Riedy, Poughkeepsie, NY (US);
Gustav E. Sittmann, III, Webster Groves, MO (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A computer program product is provided for performing an input/output (I/O) processing operation at a host computer system. The computer program product is configured to perform: obtaining a transport command word (TCW) at a channel subsystem for an I/O operation, the TCW including an address of a transport command control block (TCCB) having a transport command area (TCA) configured to hold a first plurality of device command words (DCW) and control data associated with respective DCWs, the first plurality of DCWs including a transfer TCA extension (TTE) DCW that specifies a TCA extension, the TCA extension configured to hold one or more DCWs and control data associated with respective DCWs; gathering the TCCB from one or more locations specified in the TCCB address and transferring the TCCB to the control unit; gathering the TCA extension specified by the TTE DCW; and transferring the TCA extension to the control unit.