On Thu, 2016-01-14 at 14:50 +0000, Catalin Marinas wrote: > On Thu, Jan 14, 2016 at 09:09:59AM -0500, Mark Salter wrote: > > On Thu, 2016-01-14 at 14:00 +0000, Catalin Marinas wrote: > > > On Thu, Jan 14, 2016 at 01:44:40PM +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); > > > > > > With OF, we get the coherent_dma_mask set by of_dma_configure(). But I > > > have no idea how you do this with ACPI. > > > > That doesn't get called for a PCI device (not listed in DT) does it? > > pci_device_add > pci_dma_configure > of_dma_configure(&dev->dev, bridge->parent->of_node); > > So it gets configured based on the bridge information the device is > attached to. > Oh right. And there is an ACPI path in pci_dma_configure but it only sets the coherency. But I still don't know why Graeme is having issues. I just tried an r8169 card on Mustang and Seattle with this patch series in a 4.4 kernel and it worked fine with r8169.use_dac=1. -- 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
