>> Can I know the type of your platoform Lenovo LOQ? Is it a regular notebook computer?
LOQ 15IRH8 - Type 82XV
I am using a dual boot with Windows and Ubuntu 22.04
>> The PCI EXT capabilities locate from 100h. Not sure if host controller driver limits to display them?
I did not get your question. Can you say it again please?
Ali
On Tue, Nov 28, 2023 at 3:21 AM Ping-Ke Shih <pkshih@xxxxxxxxxxx> wrote:
>
>
>
> > -----Original Message-----
> > From: Ali Ghandour <gandour.ali@xxxxxxxxx>
> > Sent: Monday, November 27, 2023 2:19 PM
> > To: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
> > Cc: linux-wireless@xxxxxxxxxxxxxxx
> > Subject: Re: Lenovo LOQ rtw_8852be
> >
> > seems like the same error persists after downgrading:
> >
> > $ uname -r
> > 5.17.0-1035-oem
> >
> > $ sudo dmesg | grep rtw
> > [ 4.859848] rtw89_8852be 0000:09:00.0: loaded firmware
> > rtw89/rtw8852b_fw-1.bin
> > [ 4.860214] rtw89_8852be 0000:09:00.0: enabling device (0000 -> 0003)
> > [ 4.861546] rtw89_8852be 0000:09:00.0: Firmware version 0.29.29.5
> > (da87cccd), cmd version 0, type 5
> > [ 4.861550] rtw89_8852be 0000:09:00.0: Firmware version 0.29.29.5
> > (da87cccd), cmd version 0, type 3
> > [ 4.861556] rtw89_8852be 0000:09:00.0: MAC has already powered on
> > [ 4.867246] rtw89_8852be 0000:09:00.0: [ERR]pci config read 719
>
> We did changes after 5.18, but your 5.17 print out error with
> "pci config read" instead of "dbi_r8_pcie".
>
> - ret = rtw89_dbi_read8(rtwdev, RTW89_PCIE_L1_CTRL, &bdr_ori);
> + ret = rtw89_pci_read_config_byte(rtwdev, RTW89_PCIE_L1_CTRL, &bdr_ori);
> if (ret) {
> - rtw89_err(rtwdev, "[ERR]dbi_r8_pcie %X\n", RTW89_PCIE_L1_CTRL); // 5.17
> + rtw89_err(rtwdev, "[ERR]pci config read %X\n", RTW89_PCIE_L1_CTRL); // 5.18
> return ret;
> }
>
> Uh. I know the reason why you see the new one, because 8852be is supported
> by kernel 6.2, and distro backport the driver to old kernel.
>
>
> If you can build driver yourself, please revert below patch and try again.
> Fixes: db38d9cd26c9 ("rtw89: use pci_read/write_config instead of dbi read/write")
>
> > >
> > > $ lspci -tv
> > > -[0000:00]-+-00.0 Intel Corporation Device a715
>
> I will try to Google to see if I can find some information about this PCI host controller.
>
> Can I know the type of your platoform Lenovo LOQ? Is it a regular notebook computer?
>
> > >
> > > $ sudo lspci -s 09:00.0 -xxxx
> > > 09:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device b852
>
> [...]
>
> > > f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>
> In my side, lspci with '-xxxx', it can display PCI configuration space 0 ~ ff0.
> In your side, lspci has the same behavior as driver that can't read 0x719.
>
> The PCI EXT capabilities locate from 100h. Not sure if host controller driver
> limits to display them?
>
> Ping-Ke
>
