On Thu, Oct 25, 2012 at 08:33:13PM +1000, Peter Crosthwaite wrote:
> On Oct 24, 2012 3:27 AM, "Peter Maydell" <[email protected]> wrote:
> >
> > Define a new global dma_context_memory which is a DMAContext corresponding
> > to the global address_space_memory AddressSpace. This can be used by
> > sysbus peripherals like sysbus-ohci which need to do DMA.
> >
> > In particular, use it in the sysbus-ohci device, which fixes a
> > segfault when attempting to use that device.
> >
> > Signed-off-by: Peter Maydell <[email protected]>
> Reviewed-by: Peter Crosthwaite <[email protected]>
Hrm. So, as I originally conceived DMAContext, a NULL context pointer
means "no translation" which is to say that DMA addresses are the same
as memory space addresses. Which would mean a context explicitly for
this purpose should not be necessary.
Has this assumption changed with the newer memory region integrated
dma context stuff?
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
