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Date:      Thu, 12 Jun 2003 15:56:32 -0700
From:      John-Mark Gurney <gurney_j@efn.org>
To:        ticso@cicely.de, "M. Warner Losh" <imp@bsdimp.com>, ticso@cicely12.cicely.de, freebsd-current@freebsd.org, freebsd-sparc64@freebsd.org
Subject:    pci probing "fixed" (was Re: PCI bus numbering and orphaned devices)
Message-ID:  <20030612225632.GK748@funkthat.com>
In-Reply-To: <20030611133353.GA634@crow.dom2ip.de>
References:  <20030609.224621.71095461.imp@bsdimp.com> <20030610115615.GB10527@cicely12.cicely.de> <20030610121249.GE10527@cicely12.cicely.de> <20030610.082730.102566465.imp@bsdimp.com> <20030610223436.GC37257@funkthat.com> <20030610231649.GD26807@cicely12.cicely.de> <20030611133353.GA634@crow.dom2ip.de>

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Well, I implemented PCI probing as per the UltraSparc IIi user's manual,
and now, I get quite a bit more than I bargined for:
bash-2.05b$ pciconf -l | wc
      38     228    3106

The complete pciconf -l -v is at:
http://people.freebsd.org/~jmg/pciconf-lv.sparc64

Now, I seem to be getting duplicates on some functions, and then of
course, I am now seeing the firewire part of the SME2300BGA that doesn't
have a phys attached to it.  (The driver does attach to the firewire
part, but fails trying to talk to the phys.)

This also required updating the pci_read_device to ignore a all zero
return value for PCIR_DEVVENDOR, and not probe higher functions in
that case.  If I tried to probe higher functions (such as 0.0.2), the
system would hang.

A dmesg output of the boot is at:
http://people.freebsd.org/~jmg/dmesg.sparc64

I don't include the dmesg that shows me attaching the firewire driver.

I have posted the patch to produce this at:
http://people.freebsd.org/~jmg/sparc.patch

Warning, this contains much debugging data, and probes for PCI devices
that previously didn't get probed for. 

P.S. Sorry for the duplicate post to -sparc64.  I forgot that some of
the -current crowd is interested in this work too.

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."



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