On 5 January 2015 at 11:19, Marc Zyngier <marc.zyngier@xxxxxxx> wrote: > 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...)? According to my coverletter email from the last time I did anything with versatile PCI: http://lists.infradead.org/pipermail/linux-arm-kernel/2013-August/193990.html it was a PB926 (and an rtl8139 network card). I'm pretty sure I flashed the board with the latest IO FPGA image too. thanks -- PMM -- 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
