Hi, all, I meet problems about mips ide disk. I find dma mode is different from other platform. We have to use dma_cache_wback_inv and vtonocache functions to work under DMA mode, I read pcnet32 ethernet driver, it works like that. I do not know if I have to support ide disk dma, what I have to do? I use Acerlab 1535D southbridge and M5229 IDE controller. I patch 1535D driver to linux 2.2.12 kernel. Hard disk can work well using PIO mode. But it is very slow on our mips evaluation board. Therefore, if someone knows how and where to add dma_cache_wback_inv, vtonocahce, something like these. Please help me. Thanks in advance! Barry __________________________________________________ Do You Yahoo!? Send instant messages & get email alerts with Yahoo! Messenger. http://im.yahoo.com/