Hi Ohad, On Tuesday 07 June 2011 12:28:53 Ohad Ben-Cohen wrote: > On Tue, Jun 7, 2011 at 12:05 PM, Laurent Pinchart wrote: > > pgsz isn't used anymore, you can remove it. > > Ok. > > >> + order = get_order(bytes); > > > > Does iommu_map() handle offsets correctly, or does it expect pa to be > > aligned to an order (or other) boundary ? > > Right now we have a BUG_ON if pa is unaligned, but that can be changed > if needed (do we want it to handle offsets ?).
At least for the OMAP3 ISP we need to, as video buffers don't necessarily start on page boundaries. > > As Russell pointed out, we should use sg->length instead of > > sg_dma_length(sg). sg_dma_length(sg) is only valid after the scatter > > list has been DMA-mapped, which doesn't happen in the iovmm driver. This > > applies to all sg_dma_len(sg) calls. > > I'll make sure I don't introduce such calls, but it sounds like a > separate patch should take care of the existing ones; pls tell me if > you want me to send one. A separate patch is indeed needed, yes. As you're already working on iommu it might be simpler if you add it to your tree. Otherwise I can send it. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
