Re: sk/msk no more

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_at_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_at_freebsd.org> wrote:
> >> > On Monday 16 March 2009 12:10:21 am Mars G Miro wrote:
> >> >> On Mon, Mar 16, 2009 at 11:31 AM, Pyun YongHyeon <pyunyh_at_gmail.com>
> > wrote:
> >> >> > On Mon, Mar 16, 2009 at 10:22:40AM +0800, Mars G Miro wrote:
> >> >> >> Hi guys,
> >> >> >>
> >> >> >>    I upgraded a box w/ sk and msk NICs running 7.1-RELEASE to 
latest
> >> >> >> -CURRENT  to try out the new USB2 stuff but my sk/msk NICs don't 
work
> >> >> >> anymore:
> >> >> >>
> >> >> >>    http://pastebin.com/m28a41b14
> >> >> >>
> >> >> >>    Saw this first last Friday, March 13, and re-csup'd a few hours 
ago
> >> >> >> and the problem is still there.
> >> >> >>
> >> >> >>    Any thoughts? Thanks.
> >> >> >>
> >> >> >
> >> >> > I don't see sk(4)/msk(4) hardwares in your dmesg output.
> >> >> > Does "pciconf -lcv" show your controller?
> >> >>
> >> >> That's the problem, the hardware disappears:
> >> >
> >> > What if you set 'hw.pci.mcfg=0' 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 
mapped
> > window.  Can you grab the output of 'acpidump -t'?
> >
> 
> /*
>   MCFG: Length=60, Revision=1, Checksum=46,
>         OEMID=IntelR, OEM Table ID=AWRDACPI, OEM Revision=0x42302e31,
>         Creator ID=AWRD, Creator Revision=0x0
> 
>         Base Address= 0x00000000e0000000
>         Segment Group= 0x0000
>         Start Bus= 0
>         End Bus= 0
>  */

Hmm, your BIOS is rather buggy and claims to only support MCFG for bus 0.  I 
will work on a fix.  I think I will make the code fall back to the old config 
mechanism when an MCFG region doesn't include the requested bus.

-- 
John Baldwin