发明授权
US07640375B2 DMA controller, method, information processing system, and program for transferring information blocks comprising data and descriptors
有权
DMA控制器，方法，信息处理系统和用于传送包括数据和描述符的信息块的程序
- 专利标题： DMA controller, method, information processing system, and program for transferring information blocks comprising data and descriptors
- 专利标题（中）： DMA控制器，方法，信息处理系统和用于传送包括数据和描述符的信息块的程序
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申请号： US11237666申请日： 2005-09-29
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公开(公告)号： US07640375B2公开(公告)日： 2009-12-29
- 发明人: Terumasa Haneda , Yuichi Ogawa
- 申请人： Terumasa Haneda , Yuichi Ogawa
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Staas & Halsey LLP
- 优先权： JP2005-020383 20050127
- 主分类号： G06F13/28
- IPC分类号： G06F13/28
摘要：
In a DMA control method in which a DMA controller transfers data in memory to an input/output device in accordance with the control information which is provided by a processing device to a DMA controller, a processing device implements a step in which the processing device sets an information block comprising the control information and the data in the memory; a step in which address information of the information block is provided by the processing device to the DMA controller; a step in which the DMA controller reads the information block from the memory based on the address information and extracts the control information; and a step in which the DMA controller transfers the data in the information block to the I/O device based on the control information.
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