多通道SDIO驱动框架设计与实现

Design and Implementation of Multi-channels SDIO Driver Framework

为了满足移动互联设备对功耗、性能以及成本的需求,通过对SDIO协议规范以及ARM、Power PC等多核CPU异步多处理器模式下负载均衡技术进行研究,提出了在linux系统下灵活性和通用性较好的多通道SDIO设备驱动程序构架,并详细描述了通信机制的原理、设备端枚举和初始化过程、驱动构架的实现要点和技术优势。最后,在实际硬件环境中对驱动程序的性能进行了测试和分析,并对如何进一步提高传输速率提出了一些建议。

For meeting the requirements by power dissipation,performance and costs of mobile interconnection devices,and based on the study of SDIO protocol specifications and load balancing technique in asynchronous multi-CPU mode of multi-core CPU like ARM and Power PC and so on,a flexible and adaptable program framework of multi-channels SDIO device driver in linux system is proposed,and the theory of communications mechanism,enumeration and initiation process in device end,including implementation outlines and technical advantages of this driver framework,are described in detail. Finally,tests and analysis are also done on driver’s performance in practical hardware environments,and some advices on how to enhance transmission efficiency are also given.