System and method for coordinating control settings for hardware-automated I/O processors
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United States of America Patent
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Mar 19, 2013
Grant Date -
Apr 12, 2012
app pub date -
Oct 6, 2010
filing date -
Oct 6, 2010
priority date (Note) -
Expired
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Abstract
A system and method for coordinating control setting with respect to an automated input/output (I/O) processor. A state machine having a transition algorithm can be configured in association with a storage controller in order to permit multiple entities to safely transmit an I/O request to an I/O device. Specific combinations of control bits associated with a fast path engine can be determined by identifying different modes with respect to the behavior of the fast path engine. Each mode can be assigned as a state with respect to the state machine. An I/O path exception and error condition that can cause transitions between the states can be determined and the transitions can be assigned from one state to another state. A generic logic template can then be configured to govern the transitions with respect to the state machine. The logic can be executed when an event occurs in order to trigger multiple state transition and/or modifications with respect to the hardware control bits of the fast path engine.
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