On 01/09/2014 02:59 PM, Wojciech Dubowik wrote:
On 01/09/2014 02:52 PM, Sujith Manoharan wrote:
Wojciech Dubowik wrote:
AR9590 running on powerpc with latest openwrt i.e.
compat-wireless-2013-11-05 backported with
your changes for split pci/soc IQ calibration.
I could try to reproduce it on my host with latest wireless testing if
you think
It would also be good to know if this is a regression from this patch,
so checking an older version of the driver without this patch would
help.
It will take some time but I am on it.
I have done some tests with latest wireless testing and our own rf card.
It seems
that 13-15dB is the difference between nominal NF(-115) and measured -101.
When device goes scanning and it returns back to the channel it
"forgets" about
old noise histogram and sets it to default. Then all the packets will
have wrong
rssi until next noise floor calibration occurs.
Below I have a log with custom printk to show the problem.
I think the only solution ot this problem is to use noise floor
calibration from ART
and apply this when available instead of default value.
Br,
Wojtek
Jan 13 15:16:06 wlanTS kernel: [21498.975369] ath_rx_tasklet:1361
04:f0:21:04:56:9d 29
Jan 13 15:16:06 wlanTS kernel: [21498.990727] ath_rx_tasklet:1361
04:f0:21:04:56:9d 24
Jan 13 15:16:06 wlanTS kernel: [21499.000331] ath9k_hw_loadnf:261
writing nfval[0]=-101 for 5180
Jan 13 15:16:06 wlanTS kernel: [21499.000335] ath9k_hw_loadnf:261
writing nfval[1]=-101 for 5180
Jan 13 15:16:06 wlanTS kernel: [21499.000342] ath9k_hw_loadnf:325
writing -50 to MAX CCA[0]
Jan 13 15:16:06 wlanTS kernel: [21499.000344] ath9k_hw_loadnf:325
writing -50 to MAX CCA[1]
Jan 13 15:16:06 wlanTS kernel: [21499.001842] ath_rx_tasklet:1361
04:f0:21:04:56:9e 39
Jan 13 15:16:06 wlanTS kernel: [21499.006096] ath_rx_tasklet:1361
04:f0:21:04:56:9d 23
Jan 13 15:16:06 wlanTS kernel: [21499.016065] ath_rx_tasklet:1361
04:f0:21:04:56:90 8
Jan 13 15:16:06 wlanTS kernel: [21499.017203] ath_rx_tasklet:1361
04:f0:21:04:56:9e 39
Jan 13 15:16:06 wlanTS kernel: [21499.021446] ath_rx_tasklet:1361
04:f0:21:04:56:9d 22
Jan 13 15:16:06 wlanTS kernel: [21499.027139] ath_rx_tasklet:1361
04:f0:21:04:56:9d 21
Jan 13 15:16:06 wlanTS kernel: [21499.027158] ath_rx_tasklet:1361
04:f0:21:04:56:9e 38
Jan 13 15:16:06 wlanTS kernel: [21499.027164] ath_rx_tasklet:1361
04:f0:21:04:56:90 8
Jan 13 15:16:06 wlanTS kernel: [21499.031424] ath_rx_tasklet:1361
04:f0:21:04:56:90 6
Jan 13 15:16:06 wlanTS kernel: [21499.032564] ath_rx_tasklet:1361
04:f0:21:04:56:9e 40
Jan 13 15:16:06 wlanTS kernel: [21499.036806] ath_rx_tasklet:1361
04:f0:21:04:56:9d 24
Jan 13 15:16:06 wlanTS kernel: [21499.046786] ath_rx_tasklet:1361
04:f0:21:04:56:90 8
Jan 13 15:16:06 wlanTS kernel: [21499.047925] ath_rx_tasklet:1361
04:f0:21:04:56:9e 38
Jan 13 15:16:06 wlanTS kernel: [21499.052167] ath_rx_tasklet:1361
04:f0:21:04:56:9d 24
Jan 13 15:16:06 wlanTS kernel: [21499.053715] ath9k_hw_loadnf:261
writing nfval[0]=-115 for 5200
Jan 13 15:16:06 wlanTS kernel: [21499.053719] ath9k_hw_loadnf:261
writing nfval[1]=-115 for 5200
Jan 13 15:16:06 wlanTS kernel: [21499.053726] ath9k_hw_loadnf:325
writing -50 to MAX CCA[0]
Jan 13 15:16:06 wlanTS kernel: [21499.053728] ath9k_hw_loadnf:325
writing -50 to MAX CCA[1]
Jan 13 15:16:06 wlanTS kernel: [21499.111587] ath9k_hw_loadnf:261
writing nfval[0]=-101 for 5180
Jan 13 15:16:06 wlanTS kernel: [21499.111590] ath9k_hw_loadnf:261
writing nfval[1]=-101 for 5180
Jan 13 15:16:06 wlanTS kernel: [21499.111598] ath9k_hw_loadnf:325
writing -50 to MAX CCA[0]
Jan 13 15:16:06 wlanTS kernel: [21499.111600] ath9k_hw_loadnf:325
writing -50 to MAX CCA[1]
Jan 13 15:16:06 wlanTS kernel: [21499.114936] ath9k_hw_loadnf:261
writing nfval[0]=-115 for 5180
Jan 13 15:16:06 wlanTS kernel: [21499.114940] ath9k_hw_loadnf:261
writing nfval[1]=-115 for 5180
Jan 13 15:16:06 wlanTS kernel: [21499.114947] ath9k_hw_loadnf:325
writing -50 to MAX CCA[0]
Jan 13 15:16:06 wlanTS kernel: [21499.114949] ath9k_hw_loadnf:325
writing -50 to MAX CCA[1]
Jan 13 15:16:06 wlanTS kernel: [21499.115050] wlan0: authenticate with
04:f0:21:04:56:9e
Jan 13 15:16:06 wlanTS kernel: [21499.117677] ath9k_hw_loadnf:261
writing nfval[0]=-115 for 5180
Jan 13 15:16:06 wlanTS kernel: [21499.117680] ath9k_hw_loadnf:261
writing nfval[1]=-115 for 5180
Jan 13 15:16:06 wlanTS kernel: [21499.117687] ath9k_hw_loadnf:325
writing -50 to MAX CCA[0]
Jan 13 15:16:06 wlanTS kernel: [21499.117689] ath9k_hw_loadnf:325
writing -50 to MAX CCA[1]
Jan 13 15:16:06 wlanTS kernel: [21499.117788] wlan0: send auth to
04:f0:21:04:56:9e (try 1/3)
Jan 13 15:16:06 wlanTS kernel: [21499.117875] cfg80211: All devices are
disconnected, going to restore regulatory settings
Jan 13 15:16:06 wlanTS kernel: [21499.117877] cfg80211: Restoring
regulatory settings
Jan 13 15:16:06 wlanTS kernel: [21499.117881] cfg80211: Kicking the queue
Jan 13 15:16:06 wlanTS kernel: [21499.117884] cfg80211: Calling CRDA to
update world regulatory domain
Jan 13 15:16:06 wlanTS kernel: [21499.119510] ath_rx_tasklet:1361
04:f0:21:04:56:9e 53
Jan 13 15:16:06 wlanTS kernel: [21499.119548] wlan0: authenticated
Jan 13 15:16:06 wlanTS kernel: [21499.120918] wlan0: associate with
04:f0:21:04:56:9e (try 1/3)
Jan 13 15:16:06 wlanTS kernel: [21499.121393] cfg80211: Ignoring
regulatory request set by core since the driver uses its own custom
regulatory domain
Jan 13 15:16:06 wlanTS kernel: [21499.121397] cfg80211: Ignoring
regulatory request set by core since the driver uses its own custom
regulatory domain
Jan 13 15:16:06 wlanTS kernel: [21499.121399] cfg80211: Ignoring
regulatory request set by core since the driver uses its own custom
regulatory domain
Jan 13 15:16:06 wlanTS kernel: [21499.121400] cfg80211: Ignoring
regulatory request set by core since the driver uses its own custom
regulatory domain
Jan 13 15:16:06 wlanTS kernel: [21499.121402] cfg80211: Ignoring
regulatory request set by core since the driver uses its own custom
regulatory domain
Jan 13 15:16:06 wlanTS kernel: [21499.121417] cfg80211: World regulatory
domain updated:
Jan 13 15:16:06 wlanTS kernel: [21499.121418] cfg80211: DFS Master
region: unset
Jan 13 15:16:06 wlanTS kernel: [21499.121419] cfg80211: (start_freq -
end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Jan 13 15:16:06 wlanTS kernel: [21499.121421] cfg80211: (2402000 KHz -
2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jan 13 15:16:06 wlanTS kernel: [21499.121422] cfg80211: (2457000 KHz -
2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Jan 13 15:16:06 wlanTS kernel: [21499.121424] cfg80211: (2474000 KHz -
2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Jan 13 15:16:06 wlanTS kernel: [21499.121425] cfg80211: (5170000 KHz -
5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jan 13 15:16:06 wlanTS kernel: [21499.121426] cfg80211: (5735000 KHz -
5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jan 13 15:16:06 wlanTS kernel: [21499.122410] ath_rx_tasklet:1361
04:f0:21:04:56:9e 54
Jan 13 15:16:06 wlanTS kernel: [21499.122426] wlan0: RX AssocResp from
04:f0:21:04:56:9e (capab=0x11 status=0 aid=1)
Jan 13 15:16:06 wlanTS kernel: [21499.122461] wlan0: associated
Jan 13 15:16:06 wlanTS kernel: [21499.122488] cfg80211: Calling CRDA for
country: XA
Jan 13 15:16:06 wlanTS kernel: [21499.124318] ath_rx_tasklet:1361
04:f0:21:04:56:9e 54
Jan 13 15:16:06 wlanTS kernel: [21499.124337] cfg80211: Found new beacon
on frequency: 5180 MHz (Ch 36) on phy0
Jan 13 15:16:06 wlanTS kernel: [21499.124346] cfg80211: Pending
regulatory request, waiting for it to be processed...
Jan 13 15:16:06 wlanTS kernel: [21499.124998] ath_rx_tasklet:1361
00:14:5a:02:10:2d 54
Jan 13 15:16:06 wlanTS kernel: [21499.125906] ath_rx_tasklet:1361
04:f0:21:04:56:9e 54
Jan 13 15:16:06 wlanTS kernel: [21499.128106] ath_rx_tasklet:1361
04:f0:21:04:56:9e 54
Jan 13 15:16:06 wlanTS kernel: [21499.140085] ath_rx_tasklet:1361
04:f0:21:04:56:9e 54
=>>> here rssi jumps 15dB
Jan 13 15:16:06 wlanTS kernel: [21499.155444] ath_rx_tasklet:1361
04:f0:21:04:56:9e 39
Jan 13 15:16:06 wlanTS kernel: [21499.170806] ath_rx_tasklet:1361
04:f0:21:04:56:9e 37
Jan 13 15:16:06 wlanTS kernel: [21499.186165] ath_rx_tasklet:1361
04:f0:21:04:56:9e 40
Sujith
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