Should the MPC8544 root complex really show up as a device?

[Marcel Moolenaar]

> On Apr 13, 2015, at 3:28 PM, Justin Hibbits <jrh29 at alumni.cwru.edu> wrote:
> 
> I'm trying to get the mini-PCIe slot on my RouterBoard RB800 working,
> and running into a snag.  It works just fine in RouterOS (Linux), but
> on FreeBSD, the card in the slot doesn't show up.  From all my
> Googling, it appears the slot should show up on PCIe controller 1, but
> the only device that shows up is the root complex as 1/0:0:0, as type
> Processor.  Should this show up anyway?  Shouldn't the device behind
> it show up instead?

The problem is that the device is flagged as a processor, not
as a PCI bridge. That’s why it shows up and also why you don’t
find anything underneath. One way to fix it is by spoofing the
device type in sys/powerpc/mpc85xx/pci_mpc85xx.c or otherwise
by changing common PCI code to accept this device as a (host)
bridge.

HTH,

--
Marcel Moolenaar
marcel at xcllnt.net

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