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From: John Baldwin <jhb@freebsd.org>
To: freebsd-hackers@freebsd.org
Subject: Re: Atom Board ACPI API MOPNV10J failing since 9.1
Date: Mon, 13 Jan 2014 14:28:47 -0500
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Cc: Dirk Engling <erdgeist@erdgeist.org>
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On Friday, January 10, 2014 12:28:42 am Dirk Engling wrote:
> Dear fellow hackers,
> 
> after upgrade my atom board to use the newer zfs features, I could not
> use my network cards anymore, neither the builtin realtek, nor my intel
> e1000 card.
> 
> You can see it in the http://erdgeist.org/MOPNV10J/dmesg (here one from
> FreeBSD-10.0-RC5, but 9.1 and 9.2 behave the same)
> 
> re0: PHY read failed
> re0: attaching PHYs failed
> ...
> em0: <Intel(R) PRO/1000 Legacy Network Connection 1.0.6> port
> 0x1000-0x103f irq 21 at device 0.0 on pci5
> em0: Setup of Shared code failed
> device_attach: em0 attach returned 6
> 
> Searching the forums and mailing lists I found this might be related to
> the new pcib code and indeed I found in every dmesg since 9.1:
> 
> pcib1: <ACPI PCI-PCI bridge> at device 28.0 on pci0
> pcib1: failed to allocate initial prefetch window: 0xe0000000-0xe00fffff

This is because it tries to allocate the same space used for AGP.  It would 
really be helpful if you could provide a verbose dmesg when it fails and a 
verbose dmesg from a working kernel.  pciconf -lb output from a working system 
would be useful as well.

-- 
John Baldwin