On 2016/3/25 1:57, Lorenzo Pieralisi wrote: > [+ Jean] > > On Thu, Mar 24, 2016 at 11:14:50AM +0800, Kefeng Wang wrote: > > [...] > >>>> You need a PCI host controller driver (e.g. >>>> drivers/pci/host/pci-host-generic.c) and corresponding bindings in DT or >>>> ACPI. >> >> In our inner test, there are some board without pcie host driver(even >> without pci host controller). > > So I guess those drivers are for devices that are attached to an LPC > controller that is not part of a PCI host controller, right ? > > BTW, what happened to this (not that I particularly like this patchset) ? They are working on it, and will upstream again. > > https://lkml.org/lkml/2015/12/29/154 > [...] > > I agree with Arnd on this and we need to patch the eg f71805f driver too > (or we just do not build on ARM) to make it request the IO port region it > needs to actually probe the device, it is not correct to assume IO space > is available and mapped, I think that's a driver bug rather than anything > else, Jean can certainly shed some light here. Ok, so Jean, would you take a look this? Thanks. Kefeng > >> Define some arch in/out func instead of generic ops? when in/out vals, check >> whether or not the pci_iobase is mapped. > > I do not think the problem should be solved in the IO accessors > implementation, see above. > > Lorenzo > > . > -- 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
