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1. (US20120159082) Direct access to cache memory

专利局 : 美国
申请号: 12969651 申请日: 16.12.2010
公布号: 20120159082 公布日: 21.06.2012
授权号: 08352646 授权日: 08.01.2013
公布类型: B2
国际专利分类:
G06F 13/28
G PHYSICS
06
计算;推算;计数
F
电数字数据处理
13
信息或其他信号在存储器、输入/输出设备或者中央处理机之间的互连或传送
14
对互连或传送请求的处理
20
关于访问输入/输出总线的
28
应用脉冲串式传送的,例如,存储器直接存取、周期挪用
申请人: International Business Machines Corporation
发明人: Cox Jason A.
Heymann Omer
Levison Nadav
Lin Kevin C.
Robinson Eric F.
代理人: Lenart Edward J.
Schnurmann Daniel H.
Biggers & Ohanian, LLP.
优先权数据:
标题: (EN) Direct access to cache memory
摘要: front page image
(EN)

Methods and apparatuses are disclosed for direct access to cache memory. Embodiments include receiving, by a direct access manager that is coupled to a cache controller for a cache memory, a region scope zero command describing a region scope zero operation to be performed on the cache memory; in response to receiving the region scope zero command, generating a direct memory access region scope zero command, the direct memory access region scope zero command having an operation code and an identification of the physical addresses of the cache memory on which the operation is to be performed; sending the direct memory access region scope zero command to the cache controller for the cache memory; and performing, by the cache controller, the direct memory access region scope zero operation in dependence upon the operation code and the identification of the physical addresses of the cache memory.