Re: [RFC][PATCH 4/4] PCI/ACPI PM: Propagate wake-up enable for devices w/o ACPI support

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On Sat, Sep 05, 2009 at 12:00:32AM +0200, Rafael J. Wysocki wrote:
> > Yes, it's presumably the case that the PME event in the bridge is just 
> > tied to the root bridge in the chipset. Do we know what chipset this 
> > hardware is? For Intel, at least, GPE behaviour is defined in the 
> > chipset docs.
> 
> One box is Intel, the other one is based on an ATI (pre-AMD) chipset, but
> the design is similar in that respect.

GPE 0xb will be the one generated by any Intel chipset whenever the 
external PCI PME# goes active. 0xd is the equivalent for chipset-level 
devices that don't have a GPE of their own. I can't see any way that a 
downstream bridge could reasonably generate a GPE, so I'd bet that it's 
using 0xb.

-- 
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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