[Bug 225325] RealTek 8169 network devices don't seem to work with memory mapped registers

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225325

aaron.styx at baesystems.com changed:

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--- Comment #3 from aaron.styx at baesystems.com ---
Created attachment 189996
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=189996&action=edit
/var/log/messages re1 output

After submitting the bug, I did some digging and saw how common this chip is,
so I would agree that simply forcing all of them to use IO mapped registers is
not the right solution. The attached is the relevant output of
/var/log/messages. (Note that this is from a 10.1 Live CD). 

I clearly need to do some more testing with this. I'll try this card in a
different machine, and I'd also like to compile with RE_DIAG to see if this is
simply a known problem with this device, but that will take me a bit. I'm not
sure if the 10.1 live cd build is compiled with this or not...

As for the meaning of "doesn't work," I'm able to set the address and bring the
device up with ifconfig, which reports the device is up and active. However,
any attempts to ping another host on the network results in 'sendto: Host is
down.' Wireshark shows no packets coming from the 1869 re device. 

Other network devices on this machine work as expected, so I know it's not a
network issue. Setting hw.re.prefer_iomap=1 also works. The device works on
Linux in this machine, though I haven't taken a close look at their driver yet,
or figured out if they're using Memory or IO mapped registers.

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