On Mon, Jan 05 2015 at 10:08:18 am GMT, Peter Maydell <peter.maydell@xxxxxxxxxx> wrote: > On 5 January 2015 at 09:50, Marc Zyngier <marc.zyngier@xxxxxxx> wrote: >> On 31/12/14 09:25, Peter Maydell wrote: >>> Will Deacon and Marc Zyngier are currently in possession of that h/w. >>> I'm sure they'd be delighted to pull it out of the cupboard and >>> give it a spin :-) >> >> I'll try to find some time (or a victim to do the testing... ;-) > > To save you some time in trying to debug things which didn't work > before this patchset, the status last time I tested on h/w was: > * PCI MMIO accesses work > * PCI IO accesses work > * PCI bus-master (DMA) doesn't work > > with the failure symptom for DMA being that the card wrote to > the correct area of memory but only every other word, so you > got strings like "HellXXXXrld" with the Xs being garbage. > This feels to me like a h/w issue rather than a driver problem. Looks like some 64bit address decoding getting in the way. Or something.... Do you remember the exact platform you tried this on (I have PB926, PB1176, and a bunch of RealViews with an odd mix of tiles...)? M. -- Jazz is not dead. It just smells funny. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
