WCN6855 issues with latest linux-firmware

[Dmitry Baryshkov]

On Mon, 16 May 2022 at 19:15, Kalle Valo <kvalo at kernel.org> wrote:
>
> Dmitry Baryshkov <dmitry.baryshkov at linaro.org> writes:
>
> > On Mon, 16 May 2022 at 16:01, Kalle Valo <kvalo at kernel.org> wrote:
> >>
> >> Dmitry Baryshkov <dmitry.baryshkov at linaro.org> writes:
> >>
> >> > On 12/05/2022 21:23, Kalle Valo wrote:
> >> >> Dmitry Baryshkov <dmitry.baryshkov at linaro.org> writes:
> >> >>
> >> >>> The wcn6855 WiFi chip stopped working for me after an update to the
> >> >>> latest linux-firmware (Linux 5.18-rc2). I can reproduce it with both
> >> >>> hw2.0 and hw2.1 chips.
> >> >>>
> >> >>> Here is the set of kernel messages I'm getting from ath11k_pci driver:
> >> >>>
> >> >>> [    4.422391] ath11k_pci 0000:01:00.0: Adding to iommu group 3
> >> >>> [    4.429571] ath11k_pci 0000:01:00.0: BAR 0: assigned [mem
> >> >>> 0x60400000-0x605fffff 64bit]
> >> >>> [    4.437857] ath11k_pci 0000:01:00.0: enabling device (0000 -> 0002)
> >> >>> [    4.445323] ath11k_pci 0000:01:00.0: MSI vectors: 1
> >> >>> [    4.450375] ath11k_pci 0000:01:00.0: wcn6855 hw2.0
> >> >>> [    5.378488] ath11k_pci 0000:01:00.0: chip_id 0x2 chip_family 0xb
> >> >>> board_id 0x8c soc_id 0x400c0200
> >> >>> [    5.392898] ath11k_pci 0000:01:00.0: fw_version 0x110f0c35
> >> >>> fw_build_timestamp 2022-03-30 09:05 fw_build_id
> >> >>> QC_IMAGE_VERSION_STRING=WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.7
> >> >>> [    5.420648] ath11k_pci 0000:01:00.0: failed to fetch board data for
> >> >>> bus=pci,vendor=17cb,device=1103,subsystem-vendor=17cb,subsystem-device=0108,qmi-chip-id=2,qmi-board-id=140
> >> >>> from ath11k/WCN6855/hw2.0/board-2.bin
> >> >>> [   15.686398] ath11k_pci 0000:01:00.0: failed to wait board file
> >> >>> download request: -110
> >> >>> [   15.694530] ath11k_pci 0000:01:00.0: qmi failed to load bdf file
> >> >>> [   15.700784] ath11k_pci 0000:01:00.0: failed to load board data file: -110
> >> >>
> >> >> What WCN6855 hardware are you exactly using? (make, model etc)
> >> >
> >> > I have asked for the hw details. The user guide for the HDK8450 lists
> >> > WCN6856 chip and also mentions 'Qualcomm® FastConnect™ 6900 Systems'.
> >>
> >> So the chip was included within HDK8450? It was not installed to the
> >> board separately or anything like that?
> >
> > Yes, it's the included chip.
>
> Ok, that should help to find it.
>
> >> >> And what
> >> >> board file are you using? md5sums of all firmware files is the best.
> >> >
> >> > # md5sum /lib/firmware/ath11k/WCN6855/hw2.1/*
> >> > 460fbd5ddc57b3d2efbf1ca976f78b90
> >> > /lib/firmware/ath11k/WCN6855/hw2.1/amss.bin
> >> > 88b3a4fbde8cab4493f0060ae3b5dee3
> >> > /lib/firmware/ath11k/WCN6855/hw2.1/board-2.bin
> >> > 7fd1c2337b0b6502588d3141e205e735
> >> > /lib/firmware/ath11k/WCN6855/hw2.1/board.bin
> >> > d1460fc1c4595d0d22f82d5baeaabbd8  /lib/firmware/ath11k/WCN6855/hw2.1/m3.bin
> >> > f67be83659c790fe15d1e42af501e9fa
> >> > /lib/firmware/ath11k/WCN6855/hw2.1/regdb.bin
> >>
> >> So you are using a separate board.bin file, where did you get it? ath11k
> >> board files are different so you cannot take the board file from
> >> elsewhere.
> >
> > The board file comes together with the board, as a bunch
> > bdwlan.e*/bdwlang.e* files on the modem partition.
> > I was using the one corresponding to the board id.
> >
> > But note, that the driver reports that it did not get the 'failed to
> > wait board file download request'. So, it would be good to get the
> > board file into the board-2.bin, but for me it looks like a separate
> > story.
>
> Yeah, we should try to get the correct board file to board-2.bin. I'll
> ask around.

Thanks!
The devices I have here use the following board IDs:

bus=pci,vendor=17cb,device=1103,subsystem-vendor=17cb,subsystem-device=0108,qmi-chip-id=2,qmi-board-id=167
bus=pci,vendor=17cb,device=1103,subsystem-vendor=17cb,subsystem-device=0108,qmi-chip-id=2,qmi-board-id=140

>
> >> Can you file this to bugzilla:
> >>
> >> https://wireless.wiki.kernel.org/en/users/drivers/ath11k/bugreport
> >>
> >> That way it's easier to track and I can try to find the correct board
> >> file.
> >
> > Done: https://bugzilla.kernel.org/show_bug.cgi?id=215987
>
> Thanks!
>
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-- 
With best wishes
Dmitry