Messages in this thread | | | Subject | Re: [patch 2.5] PCI: allow alternative methods for probing the BARs | From | Benjamin Herrenschmidt <> | Date | 06 Jan 2003 11:31:10 +0100 |
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On Mon, 2003-01-06 at 05:14, Linus Torvalds wrote:
> Alternatively, we could even have a very limited phase #1 that only > enumerates _reachable_ devices (ie it doesn't even try to create bus > numbers, it only enumerates devices and buses that have already been set > up by the firmware, and ignores bridges that aren't set up yet). A pure > discovery phase, without any configuration at all.
That would only work for cases where the kernel isn't responsible for the actual bus numbering/renumbering. For example, since we do not quite deal with PCI domains yet, I have to force pcibios_assign_all_busses() on pmac so that my 3 root busses get re-numbered (else I get 3 trees with conflicting bus numbers all starting at 0). Another case is embedded which can deal with completely unassigned bus numbers.
Ben.
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