From owner-freebsd-embedded@FreeBSD.ORG  Fri Dec 16 08:03:16 2011
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From: Stefan Bethke <stb@lassitu.de>
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Date: Fri, 16 Dec 2011 09:03:14 +0100
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To: Adrian Chadd <adrian@freebsd.org>
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Subject: Re: Updated switch/glue patch?
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Am 16.12.2011 um 01:54 schrieb Adrian Chadd:

> I have it compiling and working in the kernel. I haven't tested it as =
a module.
>=20
> The LAN ports are VLAN 1 (untagged) and I haven't tested those; the
> WAN port is VLAN 2 (tagged) and I've verified this works.
> Woot. :)
>=20
> Now, LORs.

I haven't looked at looking at all so far.

There is one more problem which is not immediately apparent: the =
register access is slooooow.  The rtl_tick callback that runs once a =
second needs .8 seconds to complete, see sysctl debug.rtl8366rb.  Most =
of this time is spent in DELAY() in iicbb.c, making the system rather =
unresponsive.

rtl_tick() runs mii_tick() and mii_pollstat() for all five PHYs.  We can =
likely leave out mii_tick() since the built-in PHYs don't need ticks for =
autonegotiation to work correctly.  Leaving out mii_pollstat() means =
that link state changes won't be detected and reported automatically but =
only when you run e.g. etherswitchcfg port0.

I'm currently looking into iicbb.c, since I believe it is DELAY()ing way =
too much (running at effectively 20kHz instead of 100kZh for I2C).  I'll =
try to speed it up, since the RTL8366RB can go at least at 100kHz.


Stefan

--=20
Stefan Bethke <stb@lassitu.de>   Fon +49 151 14070811