Hi Hiroshi, On Thu, Aug 18, 2011 at 1:49 PM, Hiroshi DOYU <Hiroshi.DOYU@xxxxxxxxx> wrote: >> -extern void iommu_set_twl(struct iommu *obj, bool on); > > This function was introduced by "Hari Kanigeri" for some OMAP4 case, > which is only using TLB, not H/W table walk. We discussed that internally, and concluded it's not needed anymore. I still kept the underlying plumbing mechanism, just in case it'd still be needed for some hw quirks in the future, but removed the interface (in case a future hw revision will seem to need it, it would probably make more sense to invoke the relevant mechanism from the underlying layers rather than from a higher layer). >> -extern int iommu_set_da_range(struct iommu *obj, u32 start, u32 end); > > This function was introduced by "David Cohen" to specify the available > ISP virtual address range. Not sure if David or anyone is using this, but if someone is, it must be out-of-tree. In that case, even if it is needed, adding a mainline user for this function at this point will most likely not be accepted anymore, and instead, one will be suggested to use (and extend as necessary) the DMA-API. Thanks, Ohad. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
