Date: Thu, 13 Sep 2012 09:18:39 -0700 From: Adrian Chadd <adrian@freebsd.org> To: freebsd-wireless@freebsd.org Subject: Fwd: svn commit: r240448 - head/sys/dev/ath/ath_hal/ar5416 Message-ID: <CAJ-Vmo=NbYGfJcoSuDP=eggOdCf1F-TUce29HV=CcapjXSr-3A@mail.gmail.com> In-Reply-To: <201209130724.q8D7OESX043864@svn.freebsd.org> References: <201209130724.q8D7OESX043864@svn.freebsd.org>
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.. so apparently half/quarter rate works on 4.9GHz channels on my AR9280 NICs. :-) It's totally odd to watch work. Just for the record, this half/quarter rate support is for GSM and PSB 11abg; it doesn't yet remotely look like it'll support 11n TX aggregation. There's a bunch of work that needs to happen with the driver and net80211 layer before we can treat half/quarter as a channel flag rather than an operational mode. There's a _lot_ of stuff to hack on here which is totally manageable without needing to know all the complicated, underlying stuff. This includes all the related stuff for long distance link support (which requires tweaking slot timing, ACK/CTS timing, etc.) Let me know if you'd like a mini-project to hack on. Adrian ---------- Forwarded message ---------- From: Adrian Chadd <adrian@freebsd.org> Date: 13 September 2012 00:24 Subject: svn commit: r240448 - head/sys/dev/ath/ath_hal/ar5416 To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Author: adrian Date: Thu Sep 13 07:24:14 2012 New Revision: 240448 URL: http://svn.freebsd.org/changeset/base/240448 Log: Flip on half/quarter rate support. No, this isn't HT/5 and HT/10 support. This is the 11a half/quarter rate support primarily used by the 4.9GHz and GSM band regulatory domains. This is definitely a work in progress. TODO: * everything in the last commit; * lots more interoperability testing with the AR5212 half/quarter rate support for the relevant chips; * Do some interop testing on half/quarter rate support between _all_ the 11n chips - AR5416, AR9160, AR9280 (and AR9285/AR9287 when 2GHz half/quarter rate support is coded up.) Modified: head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c Modified: head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c ============================================================================== --- head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c Thu Sep 13 07:22:40 2012 (r240447) +++ head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c Thu Sep 13 07:24:14 2012 (r240448) @@ -911,9 +911,9 @@ ar5416FillCapabilityInfo(struct ath_hal else pCap->halKeyCacheSize = AR5416_KEYTABLE_SIZE; - /* XXX not needed */ - pCap->halChanHalfRate = AH_FALSE; /* XXX ? */ - pCap->halChanQuarterRate = AH_FALSE; /* XXX ? */ + /* XXX Which chips? */ + pCap->halChanHalfRate = AH_TRUE; + pCap->halChanQuarterRate = AH_TRUE; pCap->halTstampPrecision = 32; pCap->halHwPhyCounterSupport = AH_TRUE;
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