Driver researching in user space
Hui Li · Jisuanji yingyong yanjiu · 2008
According to characteristics of complex device driver,this paper investigated the method that driver was realized in user space.Driver was divided into two parts,the key part was realized in kernel,and new interface was realized in user space.The paper researched structure of driver,content partition and communication method between user and kernel space.And chosed typical USB driver as examples,and described the realization of generally USB driver in user space,main content included initialized interfaces,operating interfaces,control interfaces,bulk transport interfaces,interrupt transport interfaces and communication.Finally,testing and analysis were done.