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Re: multiple wm on same card?

On Tue, Nov 01, 2011 at 12:20:04PM -0500, David Young wrote:
> On Tue, Nov 01, 2011 at 12:47:43PM -0400, Greg Troxel wrote:
> > 
> > I have a machine (totally unrelated to my previous query) that has 2
> > quad Intel GigE NICs, and thus 8 wm interfaces.  With septemberish
> > netbsd-5:
> > 
> >   using 1 wm on each quad card works fine
> > 
> >   trying to use 2 wms on a card provokes a hard lockup, usually right
> >   away
> Are the four wm(4) different functions of the same PCI device, or do the
> 4-port cards have a PCI-PCI bridge on them?

Should have a PCI-PCI bridge -- Intel makes 2-function devices but I don't
think they make 3-function ones.  All the Intel 4-port cards I've seen
have two 2-port chips and a bridge.

So the problem is likely interrupt routing.


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