On Thu, 29 Nov 2012 12:38:29 -0700, Jason Gunthorpe <jguntho...@obsidianresearch.com> wrote: > On Thu, Nov 29, 2012 at 04:26:48PM +0000, Grant Likely wrote: > > > Hmmm. okay that makes sense, but something still isn't quite right. So > > of_translate_address should take care of drilling down through the bus > > layers, and when it gets to the PCI node it /should/ use > > of_bus_pci_translate to handle traversing down to the parent node (which > > uses the 'assigned-addresses' for the pci node. > > The address translation machinery requires PCI format addresses (ie > address-cells=3) for all nodes below a PCI bus. Part of this > requirement is that 'assigned-addresses' is used for resources, *not* > 'reg'. > > If you attempt to stick a 'reg' in a block nested below a > 'device_type="pci"' the kernel throws lots of error messsages and > generates bad address mappings.
Have you added the appropriate #address-cells and #size-cells to the pci device node to go back to a non-pci addressing mode? assigned-addresses only makes sense in the pci-device node itself. reg should work for all nodes below that, and if it doesn't then it is a bug that we need to fix. g. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/