发明授权
- 专利标题: Universal DMA (direct memory access) architecture
- 专利标题(中): 通用DMA(直接存储器访问)架构
-
申请号: US12017039申请日: 2008-01-20
-
公开(公告)号: US08032669B2公开(公告)日: 2011-10-04
- 发明人: Rahoul Puri , Arvind Srinivasan , Elisa Rodrigues
- 申请人: Rahoul Puri , Arvind Srinivasan , Elisa Rodrigues
- 申请人地址: US CA Redwood Shores
- 专利权人: Oracle America, Inc.
- 当前专利权人: Oracle America, Inc.
- 当前专利权人地址: US CA Redwood Shores
- 代理机构: Park, Vaughan, Fleming & Dowler LLP
- 主分类号: G06F13/28
- IPC分类号: G06F13/28
摘要:
A universal DMA (Direct Memory Access) engine can be dynamically configured to function in either a receive or transmit mode. DMAs are logically assembled and bound as needed, without limitation to a fixed, pre-determined number of receive engines and transmit engines. Because a DMA engine may be dynamically assembled to support the flow of data in either direction, varied usage models are enabled, and components used to assemble a receive DMA engine for one application may be subsequently used to assemble a transmit engine for a different application. An application may request a specific number of each type of engine, depending on the nature of its input/output traffic. The number of receive or transmit engines can be dynamically increased or decreased without suspending or rebooting the host. A universal DMA architecture provides a unified software framework, thereby decreasing the complexity of the software and the hardware gate count cost.
公开/授权文献
- US20090187679A1 Universal DMA (Direct Memory Access) Architecture 公开/授权日:2009-07-23
信息查询