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Date: Sat, 12 Feb 2022 22:42:01 +0100
From: qwx@sciops.net
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Subject: Re: [9front] etheriwl intel wireless 7260 fatal firmware error
Reply-To: 9front@9front.org
Precedence: bulk

On Sat Feb 12 06:20:39 +0100 2022, ori@eigenstate.org wrote:
> Quoth babe <jpegbild@dismail.de>:
> > Hello,
> > I saw that the intel wireless 7260 AC card got added to etheriwl
> > (thanks khm!), so I tried it out. At first I got this error:
> > 
> > iwl: unsupported controller type 20
> > 
> > I then edited line 638 in etheriwl to change the controller type to 20,
> >  from 30. It seemed to have worked, as the card was now loaded:
> > 
> > #l0: iwl: 54Mbps port 0xF7700000 irq 11 ea 000000000000
> > #l0: firmware: iwm-7260-17, rev 11, build 3216344376, size [3] 14000+2c000 + [3] 14000+2c000 + 0
> > 
> > But then it gave me a fatal firmware error:
> > 
> > #l0: fatal firmware error
> > lastcmd: 136 (0x88)
> > error:  id 65, trm_hw_status 000002f0 00000000,
> >         branchlink2 0000099a, interruptlink 0000d340 0000b8ca,
> >         errordata 00000000 00000200 02030000
> > #l0: cmd 136: flushq: broken
> > readnvmsect: flushq: broken
> > #l0: cmd 152: qcmd: broken
> > #l0: qcmd: broken
> > 
> > Could any of you give me a heads up on how to fix this? I don't really
> > know how to program but if I could help in any way I'll be glad to :D
> > 
> > --babe
> > 
> 
> Does this still happen if you connect quickly to a wifi network?
> 
> I think this may be related to active scans, and the fix
> will likely be similar to this OpenBSD commit:
> 
> 	https://github.com/openbsd/src/commit/7b7ad45c6eb1f81fda7b875a3e190e53cf2d4bd2
> 
> But I haven't had time to tests/investigate/try to put
> a patch together.

kemal did a ton of work on the driver trying to get 7260 to work,
without success.  The firmware errors made no sense and it was
impossible to understand where the issue was.  I don't remember if his
latest patch was merged or not, I believe that it's floating on the ml
from around august last year, but again, no dice.  If anyone wants to
stare at it some more, I suggest looking at his mails and diffs.  I
remember I helped test it with a 7260 (x240) and with my t490s' i219-v
with similar results.

Cheers,
qwx