On Thu, 08 Jul 2010 16:59:52 -0700 Zach Pfeffer <zpfeffer@xxxxxxxxxxxxxx> wrote: > The problem I'm trying to solve boils down to this: map a set of > contiguous physical buffers to an aligned IOMMU address. I need to > allocate the set of physical buffers in a particular way: use 1 MB > contiguous physical memory, then 64 KB, then 4 KB, etc. and I need to > align the IOMMU address in a particular way. Sounds like the DMA API already supports what you want. You can set segment_boundary_mask in struct device_dma_parameters if you want to align the IOMMU address. See IOMMU implementations that support dma_get_seg_boundary() properly. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
