Ralf Baechle wrote: > > On Mon, Aug 13, 2001 at 09:38:24PM +0200, Tommy S. Christensen wrote: > > > Barry Wu wrote: > > > 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? > > > > Some MIPS'ification is needed to handle the caches. > > You can try the patch below to drivers/block/ide-dma.c. > > > > I don't know about your IDE controller (our board have > > a CMD PCI-648), but it may need some special handling also. > > You're referencing a function that doesn't exist in the whole kernel. vtonocache(p) is defined as KSEG1ADDR(virt_to_phys(p)). This is for linux-2.2.12 from MIPS, remember. > Aside it's a crude hack anyway. If you have problems with caches use > the API defined in Documentation/DMA-mapping.txt. I don't see why this is a hack. Sure, the Dynamic DMA interface is a lot cleaner, but it ends up with more or less the same. -Tommy
