On Tue, Feb 12, 2013 at 04:00:08PM +0000, Arnd Bergmann wrote: > > The window sizes are power of two sizes. I didn't realize that it was > > also the case for PCI BARs. Then there is no problem with the size I > > guess, and only a problem of alignment. Having the possibility to > > get the resource and return a fixed up start address would solve the > > problem I'd say. > > I thought that only device BARs in PCI had natural alignment, while > bridges don't. Right > My feeling is that an easier solution would be to keep separate > root buses for each port, which then behaves completely PCIe > compliant, but add a hook in the procedure above to set up the > address translation windows between the pci_bus_size_bridges() > and the pci_bus_assign_resources() calls. This process is only done during driver initialization. How would you support PCI-E device hotplug (my systems rely on this)? Hotplug works today with the existing Marvell driver, however that relies on pre-allocated windows. Jason -- 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
