Invention Grant
US09465749B2 DMA engine with STLB prefetch capabilities and tethered prefetching
有权
具有STLB预取能力和拴系预取功能的DMA引擎
- Patent Title: DMA engine with STLB prefetch capabilities and tethered prefetching
- Patent Title (中): 具有STLB预取能力和拴系预取功能的DMA引擎
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Application No.: US13969559Application Date: 2013-08-17
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Publication No.: US09465749B2Publication Date: 2016-10-11
- Inventor: Laurent Moll , Jean-Jacques Lecler , Philippe Boucard
- Applicant: QUALCOMM TECHNOLOGIES, INC.
- Applicant Address: US CA San Diego
- Assignee: Qualcomm Technologies, Inc.
- Current Assignee: Qualcomm Technologies, Inc.
- Current Assignee Address: US CA San Diego
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Main IPC: G06F12/02
- IPC: G06F12/02 ; G06F12/10 ; G06F12/08 ; G06F17/50
Abstract:
A system with a prefetch address generator coupled to a system translation look-aside buffer that comprises a translation cache. Prefetch requests are sent for page address translations for predicted future normal requests. Prefetch requests are filtered to only be issued for address translations that are unlikely to be in the translation cache. Pending prefetch requests are limited to a configurable or programmable number. Such a system is simulated from a hardware description language representation.
Public/Granted literature
- US20140052955A1 DMA ENGINE WITH STLB PREFETCH CAPABILITIES AND TETHERED PREFETCHING Public/Granted day:2014-02-20
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