Multi-level message passing descriptor
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United States of America Patent
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Nov 22, 2016
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N/A
app pub date -
Mar 17, 2014
filing date -
Mar 15, 2013
priority date (Note) -
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Abstract
In an embodiment of the invention, a method for to use a two level linked list descriptor mechanism to pass information among flash, memory, and IO controller modules is presented. The method includes creating a first level data structure for one or more first level descriptors; creating a second level data structure for one or more second level descriptors, each second level descriptor having a pointer to tracking information that includes start information, running information, and rewind information for a data DMA; using the one or more second level descriptors, the one or more first level descriptors, and the tracking information for a data DMA; updating the tracking information during the data DMA; and updating the tracking information at the end of the data DMA.
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