On Fri, Feb 26, 2016 at 06:06:52PM +0900, Alexandre Courbot wrote: > The default DMA mask covers a 32 bits address range, but host1x devices > can address a larger range on TK1 and TX1. Set the DMA mask to the range > addressable when we use the IOMMU to prevent the use of bounce buffers. > > Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx> > --- > Change since v3: > - Use the IOMMU-addressable range (when IOMMU is available) for each host1x > variation. This ensures that we can cover all physical memory while remaining > conservative if IOMMU is not used. > - Set the DMA range on the host1x device itself so all its childs inherit from it > > drivers/gpu/host1x/dev.c | 7 +++++++ > drivers/gpu/host1x/dev.h | 1 + > 2 files changed, 8 insertions(+) I think this could still be better, but what I have in mind is much more involved and this does fix the issue with a minimum amount of code, so I have applied this for now. Thierry
Attachment:
signature.asc
Description: PGP signature
