发明名称 |
PROVIDING INDIRECT DATA ADDRESSING FOR A CONTROL BLOCK AT A CHANNEL SUBSYSTEM OF AN I/O PROCESSING SYSTEM |
摘要 |
An computer program product, apparatus, and 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 computer program product is provided for performing a method including: sending a transport command word (TCW) to an I/O subsystem, the TCW specifying a location address and indicating whether the TCW directly or indirectly addresses a message; extracting the location address from the TCW; obtaining the message from the specified location address based on the TCW indicating direct addressing, the message including the one or more I/O commands; gathering the one or more I/O commands from command locations specified by a list of addresses identified by the specified location address to form the message based on the TCW indicating indirect addressing; and generating a message including the one or more I/O commands. |
申请公布号 |
KR20100123825(A) |
申请公布日期 |
2010.11.25 |
申请号 |
KR20107016955 |
申请日期 |
2009.02.09 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION. |
发明人 |
CASPER DANIEL;FLANAGAN JOHN;HUANG CATHERINE;KALOS MATTHEW;NJOKU UGOCHUKWU;RIEDY DALE;SITTMANN III GUSTAV |
分类号 |
G06F13/14;G06F3/06;G06F13/38 |
主分类号 |
G06F13/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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