发明授权
- 专利标题： Bi-directional data transfer within a single I/O operation
- 专利标题（中）： 单一I / O操作中的双向数据传输
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申请号： US12030954申请日： 2008-02-14
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公开(公告)号： US07941570B2公开(公告)日： 2011-05-10
- 发明人: John R. Flanagan , Daniel F. Casper , Catherine C. Huang , Matthew J. Kalos , Ugochukwu C. Njoku , Dale F. Riedy , Gustav E. Sittmann
- 申请人： John R. Flanagan , Daniel F. Casper , Catherine C. Huang , Matthew J. Kalos , Ugochukwu C. Njoku , Dale F. Riedy , Gustav E. Sittmann
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 代理机构： Cantor Colburn LLP
- 代理商 John Campbell
- 主分类号： G06F3/00
- IPC分类号： G06F3/00 ; G06F13/00 ; G06F15/00 ; G06F15/76
摘要：
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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