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Message-ID: <3abf2b162f18e41345e230301d57348ba348c09f.camel@intel.com>
Subject: Re: Is iwlwifi-9260-th-b0-jf-b0-46.ucode a debug firmware?
From:   Luciano Coelho <luciano.coelho@intel.com>
To:     Equipe Soft <equipe.soft.isere@gmail.com>, linuxwifi@intel.com,
        linux-wireless@vger.kernel.org
Date:   Mon, 23 Mar 2020 11:30:13 +0200
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Hi,

On Mon, 2020-03-23 at 10:13 +0100, Equipe Soft wrote:
> Hello, we really wonder if the version of the firmware we use is the right one.
> I put Luca Coelho in copy according to his activity on git about
> firmware: thank you for your help Luca.
> Best regards.
> @team.
> 
> 
> Le ven. 13 mars 2020 à 11:05, Equipe Soft
> <equipe.soft.isere@gmail.com> a écrit :
> > Hello, do you have any news about the issue?
> > Best regards.
> > @team
> > Le ven. 6 mars 2020 à 10:33, Equipe Soft <equipe.soft.isere@gmail.com> a écrit :
> > > Hello,
> > > we are using backport-iwlwifi core45 drivers and latest AC9260
> > > firmware binary blob:
> > > latest firmware available in Intel iwlwifi firmware fork:
> > > https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/linux-firmware.git/commit/iwlwifi-9260-th-b0-jf-b0-46.ucode?id=4bebf45872a9818a17e2079118500030a8fa377a
> > > 2019-11-28 iwlwifi: update FWs to core47-142 release
> > > 
> > > At runtime, we noticed these log traces:
> > > iwlwifi 0000:01:00.0: Found debug destination: EXTERNAL_DRAM
> > > iwlwifi 0000:01:00.0: Found debug configuration: 0
> > > iwlwifi 0000:01:00.0: Allocated 0x00400000 bytes for firmware monitor.
> > > So it seems that it is a debug firmware...
> > > 
> > > Q0) can you please confirm that we can safely use this debug firmware
> > > in our product ?

You can use this firmware.  It's a production firmware and not a
debugging version.


> > > Q1) is debug mode deliberately enabled in newer firmware or is it an
> > > error (maybe like forgotten to disable it) ?

It is deliberately enabled.  We enable some debugging options by
default so they can be extracted if needed.


> > > Q2) is there an impact on performance with this debug firmware ? WiFi
> > > speed/throughput may be reduced or not ?

No, there isn't any impact on performance.


> > > Q3) moreover, can you please confirm whether or not WoWLAN (aka
> > > Wake-on-WLAN) is working with this debug firmware ?

WoWLAN should work fine with this firmware.  


> > > Q4) is WoWLAN working with any AC9260 firmware version ? and any
> > > iwlwifi driver version ?

It has been supported for many years now.  AC9260 got support for this
from the first version of the driver/FW that were publicly released.

HTH.

--
Cheers,
Luca.