On 10/01/18 08:00, Christoph Hellwig wrote: > phys_to_dma, dma_to_phys and dma_capable are helpers published by > architecture code for use of swiotlb and xen-swiotlb only. Drivers are > not supposed to use these directly, but use the DMA API instead. > > Move these to a new asm/dma-direct.h helper, included by a > linux/dma-direct.h wrapper that provides the default linear mapping > unless the architecture wants to override it. > > Signed-off-by: Christoph Hellwig <hch at lst.de> > --- [...] > drivers/crypto/marvell/cesa.c | 1 + > drivers/mtd/nand/qcom_nandc.c | 1 + I took a look at these, and it seems their phys_to_dma() usage is doing the thing which we subsequently formalised as dma_map_resource(). I've had a crack at a quick patch to update the CESA driver; qcom_nandc looks slightly more complex in that the changes probably need to span the BAM dmaengine driver as well. In the process, though, I stumbled across gen_pool_dma_alloc() - yuck, something needs doing there, for sure... Robin.
