RE: [Bug report] rtw89: 8852b: IO_PAGE_FAULTs with beacon filter feature enabled

[Bernie Huang <phhuang@realtek.com>]

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-----Original Message-----
From: Ping-Ke Shih <pkshih@realtek.com> 
Sent: Thursday, May 8, 2025 8:59 AM
To: Fedor Pchelkin <boddah8794@gmail.com>
Cc: Bernie Huang <phhuang@realtek.com>; linux-wireless@vger.kernel.org; linux-kernel@vger.kernel.org
Subject: RE: [Bug report] rtw89: 8852b: IO_PAGE_FAULTs with beacon filter feature enabled

Fedor Pchelkin <boddah8794@gmail.com> wrote:
> > On Thu, 17. Apr 01:05, Ping-Ke Shih wrote:
> > > Fedor Pchelkin <boddah8794@gmail.com> wrote:
> > > >
> > > > On Wed, 16. Apr 00:49, Ping-Ke Shih wrote:
> > > > > As bisection, can I summarize as below table?
> > > > >
> > > > >     d56c261e52           firmware             IO_PAGE_FAULT
> > > > >    (CQM support)
> > > > >   ---------------      -----------          -----------------
> > > > >       o                 0.29.29.7                  yes
> > > > >       o                 0.29.29.5                  no
> > > > >       x                 0.29.29.7                  no
> > > > >       x                 0.29.29.5                  no
> > > > >
> > > > > If this table is correct, we will check the beacon filter feature in firmware.
> > > > >
> > > >
> > > > Yes, it correctly describes the situation. My suspicion currently 
> > > > falls on the beacon filter feature in firmware, too.
> > >
> > > Could you help to test when we have updated firmware?
> > >
> > 
> > Hi,
> > 
> > Were you able to reproduce or track down the problem?

> Yes, we have reproduced this problem, and we found sending firmware command during deep PS mode will raise IO_PAGE_FAULT. With below setting to disable deep PS > mode, the symptom can disappear.

>   rtw89_core.ko disable_ps_mode=y

> Now we are arranging CAT-C equipment to capture signals in PCIE bus to see what happens at that moment. 

> One possible solution (workaround) is to avoid sending firmware commands during deep PS mode, before we found out the root cause. 

Hi Fedor,

Could you please check whether the attached firmware fixes this issue?
The firmware version should be 1.29.29.9.
You could check it via command:
`cat /var/log/kern.log | grep "Firmware version"`

Best Regards,
Bernie



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