Re: lost thermal zones on 20040715 nc6000

[Karol Kozimor <sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org>]

Thus wrote Alex Williamson:
> 
>     I've nearly gotten to the bottom of this problem.  It's not an
> interpreter bug, nor is it a BIOS bug.  The address we were trying to
> read in AML is a SMBus controller address.  This address sits on the
> hidden SMBus function in the Intel chipset.  Unfortunately, the PCI
> quirks routine un-hides the devices.  So far this is all the same as the
> way it behaved prior to the 20040715 code drop.
> 
>    The new piece is the motherboard driver.  Now this driver comes in an
> claims the I/O port region that the SMBus controller is using.  We've
> un-hidden the PCI function, so PCI wants that resource range.  It can't
> get it so it moves the SMBus BAR to a different address.  The AML is now
> hosed cause it's hard-coded to use the address it programmed in (why
> shouldn't it, the device is hidden).  Why are we un-hiding the SMBus
> function?  The AML sets up an OpRegion for the address space it uses, so
> should have exclusive access to that range.  Suggestions?  Thanks,

Ouch, see bug #3191.
Best regards,

-- 
Karol 'sziwan' Kozimor
sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org


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