Patent · US Active

Descriptor ring management

US9697136B2 · kind B2 · utility

2Cited by

3References

14Claims

0Family size

Assignee

Arm Limited · GB

Inventors

Ali Ghassan Saidi · Austin, US
Anirruddha Nagendran Udipi · Austin, US
Matthew Evans · Cambridge, GB
Geoffrey Blake · Austin, US
Robert Gwilym Dimond · London, GB

Key dates

Filing date	Sep 23, 2014
Grant date	Jul 4, 2017
Priority date	—
Expiry date	Nov 9, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG06F2212/681
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A data processing system utilizing a descriptor ring to facilitate communication between one or more general purpose processors and one or more devices employs a system memory management unit for managing access by the devices to a main memory. The system memory management unit uses address translation data for translating memory addresses generated by the devices into addresses supplied to the main memory. Prefetching circuitry within the system memory management unit serves to detect pointers read from the descriptor ring and to prefetch address translation data into the translation lookaside buffer of the system memory management unit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.