The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2012
Filed:
Oct. 17, 2011
Ronald D. Smith, Phoenix, AZ (US);
Ronald D. Smith, Phoenix, AZ (US);
Marvell International Ltd., Hamilton, BM;
Abstract
Scheduling Direct Memory Access (DMA) operations. Blocks are provided in a first DMA chain, with each block in the first DMA chain corresponding to an operation and comprising a pair of pointers, a first pointer pointing to a command structure to be executed or a data structure to be moved, and a second pointer pointing to a next block in the first DMA chain. A DMA engine processes successive operations in the first DMA chain. Time remaining in an interval for processing the first DMA chain is tracked. A second DMA chain of conditional blocks are maintained, with each conditional block corresponding to a conditional operation and containing an estimate of time needed to complete the conditional operation. A conditional operation is executed from the second DMA chain if the remaining time in the interval is greater than the estimated time to complete processing of the conditional operation.