Messages in this thread | | | Date | Sun, 1 Sep 2002 02:40:19 +0400 | From | Ivan Kokshaysky <> | Subject | Re: [patch 2.5.31] transparent PCI-to-PCI bridges |
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On Sat, Aug 31, 2002 at 09:49:14AM -0700, Linus Torvalds wrote: > > On 31 Aug 2002, Alan Cox wrote: > > > > Related question while we are on the subject of bridges. I'm trying to > > work out a clean way to initialize a new subtree of devices given a > > bridge that suddenely has devices behind it. > > > > This occurs in three cases I know about now > > - Easidock cardbus->PCI extender > > - IBM Thinkpad hot docking bridge > > - Magma PCI extended split bridge > > pci_do_scan_bus() should do almost everything for you. Pat Mochel had some > code that made the cardbus driver basically do just this on cardbus > insertion, you might ask him.
I guess Pat's code has something to do with a resource allocation (haven't seen it though). I would play with following if I have the hardware: { pci_do_scan_bus(bus); pbus_size_bridges(bus); pbus_assign_resources(bus); } Obviously, __init qualifiers should be changed to __devinit for pbus_* and other stuff in setup-bus.c and setup-res.c.
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