On Thu, 2016-01-14 at 13:44 +0000, Graeme Gregory wrote: > On Wed, Jan 13, 2016 at 02:20:46PM +0100, Tomasz Nowicki wrote: > > From the functionality point of view this series might be split into the > > following logic parts: > > 1. Make MMCONFIG code arch-agnostic which allows all architectures to collect > > PCI config regions and used when necessary. > > 2. Move non-arch specific bits to the core code. > > 3. Use MMCONFIG code and implement generic ACPI based PCI host controller driver. > > 4. Enable above driver on ARM64 > > > > Patches has been built on top of 4.4 and can be found here: > > git@xxxxxxxxxx:semihalf-nowicki-tomasz/linux.git (pci-acpi-v3) > > > > NOTE, this patch set depends on Matthew's patches: > > http://www.spinics.net/lists/linux-pci/msg45950.html > > https://github.com/Vality/linux/tree/pci-fixes > > > > This has been tested on Cavium ThunderX server and QEMU. > > Any help in reviewing and testing is very appreciated. > > I have tested this on my AMD Overdrive so > > Tested-by: Graeme Gregory <graeme.gregory@xxxxxxxxxx> > > But to actually get my r8169 network card working I also need the > following patch. > > diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c > index 2fbf840..40e24e2 100644 > --- a/drivers/pci/probe.c > +++ b/drivers/pci/probe.c > @@ -1717,7 +1717,7 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) > set_dev_node(&dev->dev, pcibus_to_node(bus)); > dev->dev.dma_mask = &dev->dma_mask; > dev->dev.dma_parms = &dev->dma_parms; > - dev->dev.coherent_dma_mask = 0xffffffffull; > + dev->dev.coherent_dma_mask = DMA_BIT_MASK(64); > pci_dma_configure(dev); > > pci_set_dma_max_seg_size(dev, 65536); > > I suspect we need to set coherent_dma_mask somewhere in the platform but I do > not know where this should happen. Hopefully an ARM64 expert can help. I've run into a number of cards which don't work on some arm64 machines where there are no DMA address below 4G. For the realtek card you can use r8169.use_dac=1 on the cmdline to get it to work. > > Graeme > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
