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:
- Make MMCONFIG code arch-agnostic which allows all architectures to collect PCI config regions and used when necessary.
- Move non-arch specific bits to the core code.
- Use MMCONFIG code and implement generic ACPI based PCI host controller driver.
- Enable above driver on ARM64
Patches has been built on top of 4.4 and can be found here: git@github.com: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@linaro.org
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.