Bi-directional data transfer within a single I/O operation

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8495253
APP PUB NO 20110196993A1
SERIAL NO

13075993

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Abstract

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An article of manufacture, apparatus, and a method for facilitating input/output (I/O) processing for an I/O operation at a host computer system configured for communication with a control unit. The method includes the host computer system obtaining a transport command word (TCW) for an I/O operation having both input and output data. The TCW specifies a location of the output data and a location for storing the input data. The host computer system forwards the I/O operation to the control unit for execution. The host computer system gathers the output data responsive to the location of the output data specified by the TCW, and then forwards the output data to the control unit for use in the execution of the I/O operation. The host computer system receives the input data from the control unit and stores the input data at the location specified by the TCW.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Casper, Daniel F Poughkeepsie, US 105 3368
Flanagan, John R Poughkeepsie, US 115 2866
Huang, Catherine C Poughkeepsie, US 46 1899
Kalos, Matthew J Tucson, US 266 3419
Njoku, Ugochukwu C Yonkers, US 24 864
Riedy, Dale F Poughkeepsie, US 110 939
Sittmann, Gustav E Webster Groves, US 39 2200

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