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Date:      Mon, 23 Mar 2009 16:08:59 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        freebsd-current@freebsd.org
Cc:        Mars G Miro <spry@anarchy.in.the.ph>, pyunyh@gmail.com
Subject:   Re: sk/msk no more
Message-ID:  <200903231609.00039.jhb@freebsd.org>
In-Reply-To: <200903231158.28121.jhb@freebsd.org>
References:  <f12f408a0903151922p22475836s1d840e8e2cf203a2@mail.gmail.com> <f12f408a0903202008h7fa41c56o8b8f804c03d063f8@mail.gmail.com> <200903231158.28121.jhb@freebsd.org>

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On Monday 23 March 2009 11:58:27 am John Baldwin wrote:
> On Friday 20 March 2009 11:08:35 pm Mars G Miro wrote:
> > On Sat, Mar 21, 2009 at 12:42 AM, John Baldwin <jhb@freebsd.org> wrote:
> > > On Thursday 19 March 2009 11:24:24 pm Mars G Miro wrote:
> > >> On Thu, Mar 19, 2009 at 11:26 PM, John Baldwin <jhb@freebsd.org> wro=
te:
> > >> > What if you set 'hw.pci.mcfg=3D0' in loader?
> > >> >
> > >>
> > >> That did it! Even w/ ACPI enabled in the BIOS, the sk/msk NICs don't
> > >> get lost anymore.
> > >>
> > >> pciconf and verbose dmesg: http://pastebin.com/f31621191
> > >>
> > >> btw, what does this knob actually do ?
> > >
> > > mcfg is a mechanism for doing faster PCI config access using a memory=
=20
> mapped
> > > window. =A0Can you grab the output of 'acpidump -t'?
> > >
> >=20
> > /*
> >   MCFG: Length=3D60, Revision=3D1, Checksum=3D46,
> >         OEMID=3DIntelR, OEM Table ID=3DAWRDACPI, OEM Revision=3D0x42302=
e31,
> >         Creator ID=3DAWRD, Creator Revision=3D0x0
> >=20
> >         Base Address=3D 0x00000000e0000000
> >         Segment Group=3D 0x0000
> >         Start Bus=3D 0
> >         End Bus=3D 0
> >  */
>=20
> Hmm, your BIOS is rather buggy and claims to only support MCFG for bus 0.=
  I=20
> will work on a fix.  I think I will make the code fall back to the old co=
nfig=20
> mechanism when an MCFG region doesn't include the requested bus.

Try the patch at http://www.FreeBSD.org/~jhb/patches/pci_mcfg.patch and let
me know how it goes.

=2D-=20
John Baldwin



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