Date: Mon, 09 Mar 2015 14:20:14 +0300 From: Lev Serebryakov <lev@FreeBSD.org> To: freebsd-wireless@freebsd.org Subject: Problems with AR9280 in AP mode: hang ups, DMA timeouts and stuck beacons Message-ID: <54FD81EE.6020503@FreeBSD.org>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQJ8BAEBCgBmBQJU/YHtXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRGOTZEMUNBMEI1RjQzMThCNjc0QjMzMEFF QUIwM0M1OEJGREM0NzhGAAoJEOqwPFi/3EePm2wQAIlO/DKnLHwGpPaK06VUFbsY vvFSiXNo8zQp99xRcExSP4W8YHrnJRKjAMlerOhlsW9huvM4ep8l18vaoOguH9BY WzaruIsPonCbQJlNPurSFsVzGAqfdL92Zfbs+mgNbjoicz7zI/BOmhBw5ujcqgmb A04C+f5Q6pVSdTkv9OQEJSll0wmyAxzFzwnyPaL9FSyIz0mmo8lnMmzP+jZLEPfJ 0ml2eNKXgvSxAEuEg/Xl52SpnPmtvz2FTQjt5glqgh9/BdRN+VRBCGpsxZWfPz+b GH3WbUbizSbQA/SJ7gVeIP7dVRNMs1ZAe1u91W0appBkPpIg5bS6lPsbPOm8fW0N bxOugYzc7tlcgN9EBfTVeAo3G15OKSkIIAkYJ+lQPP8BwxZbV3FhLmjffgv1AmzC lTO4GrKCjQozsKmXC1pcmn2hnZUGznYqWhZs8CtRtGnvwhd54XGquS9tSedbSCB+ rAZNFQnvun8Fl1ggf3rWf4fFDMQsXYV/Kxt8/muv0QfBDGU/Kt9ct8lIYOOm3rIS EmHW5LZN5/DLCuY04J37lCR4J9ku9HU5t+2lqCCgv6D9t2mJVbnhRTGGBSSY7G+I hJC0tAY8zVvciTUAe2MNUYFTx9lEItVjVLvhGqva1vdrF6kl8+C1AejMpCgwXwg2 v+XIhBDlVYOA4EucRZ9T =U3Xj -----END PGP SIGNATURE-----
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