On Monday 22 March 2010 02:51:21 pm Dominik Brodowski wrote: > On Mon, Mar 22, 2010 at 01:36:03PM -0700, Bjorn Helgaas wrote: > > > You can still use subtractive-decoded resources, but then you have to add > > > them to /etc/pcmcia/config.opts and run pcmcia-startup-bridges (or echo the > > > resource to a sysfs file). > > > > It's too bad we still have such manual configuration. > > Agreed. > > > Is there still > > information there that we can't figure out automatically? > > That's unknown to me -- are there any ISA-capable systems being sold? If so, > then I suspect the answer may be "yes". > > > > Now, "usecrs" is only used on 2008-or-newer systems where we _hope_ that all > > > resource "consumers" are accounted for. So the problem might be mitigated. > > > However, I wouldn't dare to use ioports 0x0-0xff anyways for they usually > > > are used for onboard legacy devices... > > > > Right. But PCMCIA is at no greater risk than regular PCI, right? > > It looks like both will allocate only above PCIBIOS_MIN_IO (0x1000). > > No, PCMCIA will happily allocate below this limit. I saw "#define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO" in yenta_socket.c and assumed it would take care of this, but I didn't look any deeper. I'm still confused about why PCMCIA is "special" in this regard and why pci=use_crs breaks it. Can you make up an example that illustrates the problem? Bjorn -- 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
