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From: Ali Ghandour <gandour.ali@gmail.com>
Date: Tue, 5 Dec 2023 08:12:33 +0200
Message-ID: <CAOE0c97cFjF=LGD8-nb95ihQhE0YRRqM=4PKud4nccQa06MVxw@mail.gmail.com>
Subject: Re: Lenovo LOQ rtw_8852be
To: Ping-Ke Shih <pkshih@realtek.com>
Cc: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
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> > > > > $ lspci -tv
> > > > > -[0000:00]-+-00.0  Intel Corporation Device a715
> > >> Can I know the type of your platoform Lenovo LOQ? Is it a regular no=
tebook computer?
> >
> > LOQ 15IRH8 - Type 82XV
> > I am using a dual boot with Windows and Ubuntu 22.04
>
> I still can't find information about the device a715 that I also can't fi=
nd
> this ID in kernel source code. I will dig kernel further when I have free=
 time.


According to the specs:
1x 13th Generation Intel Core i7-13620H Processor(Core i7-13620H)


>
> >
> > >> The PCI EXT capabilities locate from 100h. Not sure if host controll=
er driver limits to display them?
> > I did not get your question. Can you say it again please?
>
> I meant offset 100h of PCI configuration space is a standard area [1].
>
> "PCI Express extends the Configuration Space to 4096 bytes per Function a=
s compared to 256 bytes
> allowed by PCI Local Bus Specification. PCI Express Configuration Space i=
s divided into a PCI 3.0
> compatible region, which consists of the first 256 bytes of a Function=E2=
=80=99s Configuration Space, and a
> PCI Express Extended Configuration Space which consists of the remaining =
Configuration Space
> 5 (see Figure 7-3)."
>
> I don't know why the PCI controller in your platform doesn't recognize th=
e region,
> and then _possibly_ cause driver failed to access 719h.
>
>
> [1] https://blog.csdn.net/huangkangying/article/details/50570612

According to the specs:
2 x M.2 (PCI Express 4.0 x4) (1 free)
512 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe)
and I have actually inserted a second SSD myself

Is the driver compatible with PCI 4.0?