A method and apparatus for input/output virtual address translation and validation assigns a range of memory to a device driver for its exclusive use. The device driver invokes system functionality for receiving a logical address and outputting a physical address having a length greater than the logical...http://www.google.com.hk/patents/US6886171?utm_source=gb-gplus-share專利 US6886171 - Caching for I/O virtual address translation and validation using device drivers
