On Mon, Feb 22, 2016 at 10:49:08AM +0100, Niklas Söderlund wrote: > Hi Vinod, > > On 2016-02-21 20:50:46 +0530, Vinod Koul wrote: > > The slave dmaengine semantics required the client to map dma > > addresses and pass DMA address to dmaengine drivers. While this > > was a convenient notion coming from generic dma offload cases > > where dmaengines are interchangeable and client is not aware of > > which engine to map to. > > > > But in case of slave, we know the dmaengine and always use a > > specific one. Further the IOMMU cases can lead to failure of this > > notion, so make this as physical address and now dmaengine driver > > will do the required mapping. > > Thanks! I have tested this patch with my IOMMU series and it works > nicely. > > > > > Original-patch-by: Linus Walleij <linus.walleij@xxxxxxxxxx> > > Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx> > > Tested-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx> Thanks :) > > > --- > > include/linux/dmaengine.h | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h > > index 16a1cad30c33..d85ecd20af50 100644 > > --- a/include/linux/dmaengine.h > > +++ b/include/linux/dmaengine.h > > @@ -357,8 +357,8 @@ enum dma_slave_buswidth { > > */ > > struct dma_slave_config { > > enum dma_transfer_direction direction; > > - dma_addr_t src_addr; > > - dma_addr_t dst_addr; > > + phys_addr_t src_addr; > > + phys_addr_t dst_addr; > > enum dma_slave_buswidth src_addr_width; > > enum dma_slave_buswidth dst_addr_width; > > u32 src_maxburst; > > -- > Regards, > Niklas Söderlund > -- > To unsubscribe from this list: send the line "unsubscribe dmaengine" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- ~Vinod -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html