Messages in this thread | | | Date | Thu, 19 Dec 2013 16:55:26 -0800 | From | Greg KH <> | Subject | Re: How to reserve pci bus numbers for hotplug? |
| |
On Sat, Dec 14, 2013 at 11:15:39PM +0100, Andreas Noever wrote: > On Sat, Dec 14, 2013 at 11:01 PM, Greg KH <gregkh@linuxfoundation.org> wrote: > > On Thu, Dec 12, 2013 at 12:37:50AM +0100, Andreas Noever wrote: > >> > >> If I could get Linux to assign enough resources (bus numbers for now) > >> then I could drop the acpi_osi parameter and make thunderbolt work > >> after suspend... So, is there an easy way to fix this? (Quirks, > >> reconfiguring bus number assignments from a platform driver, ...?) > > > > I think you are going to have to do a lot more here, what is needed is a > > whole connection manager for Thunderbolt, emulating what the BIOS does, > > in order to get all of this working properly. > > > > But don't let that stop you from trying, however the work involved is > > really not trivial at all. > > > > good luck, > > > > greg k-h > > Actually the thunderbolt part is already working (for non chaining > devices, see https://lkml.org/lkml/2013/11/28/492 if you are > interested). I can completely bootstrap the tb side of things. The > only problem is that if power has been cut by the firmware (during > boot without osi_acpi=Darwin or after a suspend/resume cycle) then > Linux does not allocate enough PCI resources...
Ah, that's nice to know, I didn't realize that.
There should be some Intel people around on the list that has access to a Thunderbolt monitor for testing. Or, if needed, I can see if I can expense one, as it would be good to get this working :)
thanks,
greg k-h
| |