iwn firmware sysassert

[Sean C. Farley]

On Fri, 26 Jul 2013, Adrian Chadd wrote:

> Try just doing ifconfig wlan0 -ht
>
> See if that helps

I finally made it back to the wireless router that was having issues.  I 
found that my NIC has no trouble with the router at work with 40MHz.

However, my router at home is setup for 20MHz.  The complete setup is 
2.4 GHz band, mixed mode (B and G) and 20 MHz width.

Disabling high throughput stops the firmware assertion and wireless 
works.  I tried -ht, -ht20 and -ht40 each with a reboot for a fresh 
start and received the same results.


> On 25 July 2013 17:10, Sean C. Farley <scf at freebsd.org> wrote:
>> On Thu, 25 Jul 2013, Adrian Chadd wrote:
>>
>>> Ok, then I have no idea.
>>>
>>> There's active work on iwn going on in -HEAD. I suggest updating to
>>> that and then tracking development. No, I won't be backporting
>>> anything to -9 or -8; someone else will have to take charge of that
>>> (and field support queries when things don't work.)
>>
>>
>> I experimented a bit.  A workaround for me is to set the mode to 11b on
>> wlan0.  While not the best solution, it hopefully narrows down the issue.  I
>> will at the code later for some ideas of what changed.
>>
>>
>>
>>> On 25 July 2013 16:38, Sean C. Farley <scf at freebsd.org> wrote:
>>>>
>>>> On Thu, 25 Jul 2013, Adrian Chadd wrote:
>>>>
>>>>> Try jsut doing:
>>>>>
>>>>> ifconfig wlan0 create wlandev iwn0
>>>>> wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf
>>>>>
>>>>> .. ie, don't do an ifconfig iwn0 up
>>>>
>>>>
>>>>
>>>> Same result.  I ran with ifconfig_wlan0="WPA" removed from /etc/rc.conf
>>>> else
>>>> wpa_supplicant would start:
>>>> ifconfig wlan0 destroy
>>>>
>>>> ifconfig wlan0 create wlandev iwn0
>>>> wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf
>>>>
>>>>
>>>>> On 25 July 2013 15:25, Sean C. Farley <scf at freebsd.org> wrote:
>>>>>>
>>>>>>
>>>>>> After upgrading my laptop from 8.4-STABLE to 9-STABLE, I have been
>>>>>> unable
>>>>>> to
>>>>>> use the wireless NIC.  The indicator light will flash for a moment and
>>>>>> surrender.  The error is always the same and reproducible with
>>>>>> "ifconfig
>>>>>> iwn0 up".  The system is 9-STABLE (r253048).  This appears to be the
>>>>>> same
>>>>>> or
>>>>>> similar to PR 175053:
>>>>>> http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/175053
>>>>>>
>>>>>> Boot:
>>>>>> iwn0: <Intel Ultimate N WiFi Link 5300> mem 0xf8000000-0xf8001fff irq
>>>>>> 17
>>>>>> at
>>>>>> device 0.0 on pci4
>>>>>>
>>>>>> Card details:
>>>>>> iwn0 at pci0:4:0:0:        class=0x028000 card=0x11218086 chip=0x42358086
>>>>>> rev=0x00 hdr=0x00
>>>>>>     vendor     = 'Intel Corporation'
>>>>>>     device     = 'Ultimate N WiFi Link 5300'
>>>>>>     class      = network
>>>>>>     bar   [10] = type Memory, range 64, base 0xf8000000, size 8192,
>>>>>> enabled
>>>>>>     cap 01[c8] = powerspec 3  supports D0 D3  current D0
>>>>>>     cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
>>>>>>     cap 10[e0] = PCI-Express 1 endpoint max data 128(128) FLR link
>>>>>> x1(x1)
>>>>>>                  speed 2.5(2.5) ASPM L1(L0s/L1)
>>>>>> ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
>>>>>> ecap 0003[140] = Serial 1 00216affff985c6e
>>>>>>
>>>>>> Error (same each time except for time):
>>>>>> wlan0: link state changed to UP
>>>>>> iwn0: iwn_intr: fatal firmware error
>>>>>> firmware error log:
>>>>>>   error type      = "SYSASSERT" (0x00000005)
>>>>>>   program counter = 0x00003130
>>>>>>   source line     = 0x00000585
>>>>>>   error data      = 0x0000000100000000
>>>>>>   branch link     = 0x0000312A0000312A
>>>>>>   interrupt link  = 0x0000091600000000
>>>>>>   time            = 1611815765
>>>>>> driver status:
>>>>>>   tx ring  0: qid=0  cur=0   queued=0
>>>>>>   tx ring  1: qid=1  cur=0   queued=0
>>>>>>   tx ring  2: qid=2  cur=0   queued=0
>>>>>>   tx ring  3: qid=3  cur=2   queued=0
>>>>>>   tx ring  4: qid=4  cur=67  queued=0
>>>>>>   tx ring  5: qid=5  cur=0   queued=0
>>>>>>   tx ring  6: qid=6  cur=0   queued=0
>>>>>>   tx ring  7: qid=7  cur=0   queued=0
>>>>>>   tx ring  8: qid=8  cur=0   queued=0
>>>>>>   tx ring  9: qid=9  cur=0   queued=0
>>>>>>   tx ring 10: qid=10 cur=0   queued=0
>>>>>>   tx ring 11: qid=11 cur=0   queued=0
>>>>>>   tx ring 12: qid=12 cur=0   queued=0
>>>>>>   tx ring 13: qid=13 cur=0   queued=0
>>>>>>   tx ring 14: qid=14 cur=0   queued=0
>>>>>>   tx ring 15: qid=15 cur=0   queued=0
>>>>>>   tx ring 16: qid=16 cur=0   queued=0
>>>>>>   tx ring 17: qid=17 cur=0   queued=0
>>>>>>   tx ring 18: qid=18 cur=0   queued=0
>>>>>>   tx ring 19: qid=19 cur=0   queued=0
>>>>>>   rx ring: cur=0
>>>>>> wlan0: link state changed to DOWN
>>>>>>
>>>>>> vmstat -i:
>>>>>> ...
>>>>>> irq258: iwn0                         973          0
>>>>>> ...
>>>>>>
>>>>>> Any ideas on what is broken and how to get it to work?
>>>>>>
>>>>>> Please Cc me as I am not on this specific list.
>>>>>>
>>>>>> Thank you.

Sean
-- 
scf at FreeBSD.org