Problems with AR9280 in AP mode: hang ups, DMA timeouts and stuck beacons

[Adrian Chadd]

Which version of FreeBSD is this with?


-a


On 9 March 2015 at 04:20, Lev Serebryakov <lev at freebsd.org> wrote:
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>  I have Ubiquiti SR71E card based on AR9280:
>
> ath0: <Atheros 9280> mem 0xd0000000-0xd000ffff irq 18 at device 0.0 on
> pci3
> ath0: [HT] enabling HT modes
> ath0: [HT] 1 stream STBC receive enabled
> ath0: [HT] 1 stream STBC transmit enabled
> ath0: [HT] 2 RX streams; 2 TX streams
> ath0: AR9280 mac 128.2 RF5133 phy 13.0
> ath0: 2GHz radio: 0x0000; 5GHz radio: 0x00c0
>
>  I have (again!) problems with it hangs in AP mode. It becomes
> critical, as my wife use WiFi to teach via Skype. So, when WiFi hangs
> for 2-3 minutes, I get loud (and righteous!) complains.
>
>  Last such case leaves me this in dmesg:
>
> Mar  9 12:59:32 gateway kernel: ath0: stuck beacon; resetting (bmiss
> count 4)
> Mar  9 12:59:32 gateway kernel: ar5416StopDmaReceive: dma failed to
> stop in 10ms
> Mar  9 12:59:32 gateway kernel: AR_CR=0x00000024
> Mar  9 12:59:32 gateway kernel: AR_DIAG_SW=0x42000020
> MMar  9 13:26:52 gateway kernel: ath0: ath_rx_proc: kickpcu; handled 0
> packets
> Mar  9 13:29:59 gateway kernel: ath0: stuck beacon; resetting (bmiss
> count 4)
> Mar  9 13:31:39 gateway kernel: ath0: stuck beacon; resetting (bmiss
> count 4)
> Mar  9 13:32:07 gateway kernel: ath0: stuck beacon; resetting (bmiss
> count 4)
>
>  And it looks like that client (Win7 with Intel N6235) lost connection
> at ~13:26:30 (before "kickpcu") and restore it only at 13:32:10!
>
>   AP is FreeBSD-CURRENT r278206 (from Feb 6 2015).
>
> - --
> // Lev Serebryakov AKA Black Lion
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