| Message ID | m3wpg52hii.fsf@t19.piap.pl (mailing list archive) |
|---|---|
| State | RFC |
| Delegated to: | Kalle Valo |
| Headers | show |
Krzysztof wrote: > Hi, > > I recently tried to select a single antenna on AR9300 and it works for > 30 seconds only. The subsequent calibration makes the RX signal level to > drop from the usual -30/-40 dBm to -70/-80 dBm, and the transmission > practically stops. > > With the attached patch it works, though selecting the antenna doesn't > seem to have any visible effect, at least with "iw wlanX station dump" > (perhaps it works for TX). > > I'm using ad-hoc mode: > > rmmod ath9k > modprobe ath9k > iw dev wlan0 set type ibss > iw phy phyX set antenna 2 > ip link set up dev wlan0 > iw dev wlan0 set bitrates legacy-2.4 18 > iw dev wlan0 ibss join nameXXX freqYYY > ip addr add ZZZ broadcast + dev wlan0 > > The card in question is Mikrotik (Routerboard) R11e-2HPnD mPCIe adapter: > AR9580 Wireless Network Adapter (rev 01), ID 168c:0033, subsystem > 19b6:d016. > ieee80211 phy0: Atheros AR9300 Rev:4 mem=0xc0f40000, irq=334 > https://routerboard.com/R11e-2HPnD > > Linux 4.9.0-rc5. > > > Is there a better way? > > Signed-off-by: Krzysztof Halasa <khalasa@piap.pl> > > diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c > index e9f32b5..7f17e5d 100644 > --- a/drivers/net/wireless/ath/ath9k/main.c > +++ b/drivers/net/wireless/ath/ath9k/main.c > @@ -2245,7 +2245,7 @@ static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) > return 0; > > /* AR9100 runs into calibration issues if not all rx chains are enabled */ > - if (AR_SREV_9100(ah)) > + if (AR_SREV_9100(ah) || AR_SREV_9300(ah)) > ah->rxchainmask = 0x7; > else > ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant); I'll assume this is an RFC patch. Please resubmit if this is the right approach. Patch set to RFC.
I would prefer that you didn't submit this. > > I recently tried to select a single antenna on AR9300 and it works for > 30 seconds only. The subsequent calibration makes the RX signal level > to drop from the usual -30/-40 dBm to -70/-80 dBm, and the > transmission practically stops. > > With the attached patch it works, though selecting the antenna doesn't > seem to have any visible effect, at least with "iw wlanX station dump" > (perhaps it works for TX). > > I'm using ad-hoc mode: > > rmmod ath9k > modprobe ath9k > iw dev wlan0 set type ibss > iw phy phyX set antenna 2 2 is a bad mask. We use bitmap, the valid masks are 1, 3, 7. -- Miaoqing
miaoqing@codeaurora.org writes: >> rmmod ath9k >> modprobe ath9k >> iw dev wlan0 set type ibss >> iw phy phyX set antenna 2 > > 2 is a bad mask. We use bitmap, the valid masks are 1, 3, 7. Thanks for your response. I have two antenna connections (and a single antenna). Is it possible to select the secondary antenna connector only? How?
On 21/11/16 14:54, Krzysztof Hałasa wrote: > miaoqing@codeaurora.org writes: > >>> rmmod ath9k >>> modprobe ath9k >>> iw dev wlan0 set type ibss >>> iw phy phyX set antenna 2 >> >> 2 is a bad mask. We use bitmap, the valid masks are 1, 3, 7. > > Thanks for your response. > > I have two antenna connections (and a single antenna). Is it possible to > select the secondary antenna connector only? How? > No this is not really possible. We have been playing around with this two, three years ago with this. There are just too many things which rely on chain0 Noise calibration, DFS, Temperature measurement, Spectrum measurement are just a few of the things I remember which don't work realiably anymore. See [1] for more. BR Matthias [1] http://ath9k-devel.ath9k.narkive.com/QZcobwy1/ath9k-deaf-qca9558-when-setting-rxchainmask#post1
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index e9f32b5..7f17e5d 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -2245,7 +2245,7 @@ static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) return 0; /* AR9100 runs into calibration issues if not all rx chains are enabled */ - if (AR_SREV_9100(ah)) + if (AR_SREV_9100(ah) || AR_SREV_9300(ah)) ah->rxchainmask = 0x7; else ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant);
Hi, I recently tried to select a single antenna on AR9300 and it works for 30 seconds only. The subsequent calibration makes the RX signal level to drop from the usual -30/-40 dBm to -70/-80 dBm, and the transmission practically stops. With the attached patch it works, though selecting the antenna doesn't seem to have any visible effect, at least with "iw wlanX station dump" (perhaps it works for TX). I'm using ad-hoc mode: rmmod ath9k modprobe ath9k iw dev wlan0 set type ibss iw phy phyX set antenna 2 ip link set up dev wlan0 iw dev wlan0 set bitrates legacy-2.4 18 iw dev wlan0 ibss join nameXXX freqYYY ip addr add ZZZ broadcast + dev wlan0 The card in question is Mikrotik (Routerboard) R11e-2HPnD mPCIe adapter: AR9580 Wireless Network Adapter (rev 01), ID 168c:0033, subsystem 19b6:d016. ieee80211 phy0: Atheros AR9300 Rev:4 mem=0xc0f40000, irq=334 https://routerboard.com/R11e-2HPnD Linux 4.9.0-rc5. Is there a better way? Signed-off-by: Krzysztof Halasa <khalasa@piap.pl>