Date: Fri, 16 May 2014 20:06:02 +0200 From: =?iso-8859-2?Q?Edward_Tomasz_Napiera=B3a?= <trasz@FreeBSD.org> To: "freebsd-hackers@freebsd.org" <freebsd-hackers@FreeBSD.org> Subject: Workaround for "fatal firmware error" iwn(4) problem. Message-ID: <8FB7D6BF-005A-41A1-9DCE-C8B09EA338EE@FreeBSD.org>
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I've started using FreeBSD laptop and iwn(4) failing at random moments like this... May 16 17:11:54 brick kernel: iwn0: iwn_intr: fatal firmware error May 16 17:11:54 brick kernel: firmware error log: May 16 17:11:54 brick kernel: error type = "NMI_INTERRUPT_WDG" (0x00000004) May 16 17:11:54 brick kernel: program counter = 0x0000046C May 16 17:11:54 brick kernel: source line = 0x000000D0 May 16 17:11:54 brick kernel: error data = 0x0000000207030000 May 16 17:11:54 brick kernel: branch link = 0x0000D31A000004C2 May 16 17:11:54 brick kernel: interrupt link = 0x000006DE0000D23A May 16 17:11:54 brick kernel: time = 2985537 May 16 17:11:54 brick kernel: driver status: May 16 17:11:54 brick kernel: tx ring 0: qid=0 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 1: qid=1 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 2: qid=2 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 3: qid=3 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 4: qid=4 cur=33 queued=0 May 16 17:11:54 brick kernel: tx ring 5: qid=5 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 6: qid=6 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 7: qid=7 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 8: qid=8 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 9: qid=9 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 10: qid=10 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 11: qid=11 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 12: qid=12 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 13: qid=13 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 14: qid=14 cur=0 queued=0 May 16 17:11:54 brick kernel: tx ring 15: qid=15 cur=0 queued=0 May 16 17:11:54 brick kernel: rx ring: cur=45 ... has been driving me crazy, so I wrote a workaround. The patch can be found here: http://people.freebsd.org/~trasz/iwn.diff I think it's too ugly to commit it as is (I'd never release crap like this, but I know nothing about WiFi and iwn(4) in particular, so I feel justified), but feedback is still welcome.help
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