Date: Fri, 30 Nov 2012 13:02:48 -0800 From: Adrian Chadd <adrian@freebsd.org> To: freebsd-wireless@freebsd.org Subject: TDMA update: 802.11n NIC -> 802.11n NIC is now working stable (alas at 802.11a rates..) Message-ID: <CAJ-Vmo=PiUu=aCy4Jqda2Svcxdh23G-VR20FMq68SM6xf3RatA@mail.gmail.com>
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Hi, I meant to post this last night but fell asleep. :-) I've verified that the 11n NIC <-> 11n NIC TDMA setup is working and working stable. I haven't yet run it over the course of "time needed to wrap a 32 bit TSF", so that's next. In this instance: * TDMA master: AR9280 * TDMA slave: AR5416 I have a couple of small patches to push up just to make the NEXTTBTT register in the 11n chips behave like the AR5212 version does (ie, TU resolution, not TSF resolution) as rounding errors seem to mess with the tsfadjust calculation a little. That'll get resolved when someone makes the logic all TSF aware. I also have a patch that extends sets the PCU AR_MISC_MODE bit that enforces the txop burst window, and doesn't allow the PCU to start TXing the frame if it will blow past the burst window. But it's stable without those two. So; those of you who were playing with it at the beginning of the year and couldn't get it stable - go forth and tinker! It actually works great now. Adrian
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