发明申请
US20050216610A1 Method to provide cache management commands for a DMA controller
失效
为DMA控制器提供高速缓存管理命令的方法
- 专利标题： Method to provide cache management commands for a DMA controller
- 专利标题（中）： 为DMA控制器提供高速缓存管理命令的方法
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申请号： US10809553申请日： 2004-03-25
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公开(公告)号： US20050216610A1公开(公告)日： 2005-09-29
- 发明人: Charles Johns , James Kahle , Peichun Liu , Thuong Truong
- 申请人： Charles Johns , James Kahle , Peichun Liu , Thuong Truong
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 主分类号： G06F12/08
- IPC分类号： G06F12/08 ; G06F13/28
摘要：
The present invention provides a method and a system for providing cache management commands in a system supporting a DMA mechanism and caches. A DMA mechanism is set up by a processor. Software running on the processor generates cache management commands. The DMA mechanism carries out the commands, thereby enabling the software program management of the caches. The commands include commands for writing data to the cache, loading data from the cache, and for marking data in the cache as no longer needed. The cache can be a system cache or a DMA cache.