[elrepo] kmod-ath10k firmware issues (?) with CentOS 7

Phil Perry phil at elrepo.org
Thu Aug 18 05:43:45 EDT 2016 

On 17/08/16 23:52, Sean Hancock via elrepo wrote:
> UPDATE:
>
> I created a directory named /lib/firmware/ath10k/QCA6174/hw3.0
>
> I then went to https://github.com/kvalo/ath10k-firmware/tree/master/QCA6174/hw3.0 and copied the entire contents into the new directory. This is where I run into my first issue the github QCA6174/hw3.0 directory only contained 3 bin files:
> board-2.bin
> board.bin
> firmware-4.bin_WLAN.RM.2.0-00180-QCARMSWPZ-1
>

Try renaming that firmware to firmware-4.bin - hopefully that is the 
correct one and you will see reference to missing firmware-4.bin gone in 
dmesg.

I'm hoping it only needs one firmware, and once firmware-4.bin is found 
and loaded it will stop looking for the others.

> there was no sign of a firmware-3.bin or firmware-2.bin. I did not touch the other folder in the ath10k folder (my plan if this worked to to systematically rename them to see if it mattered; I didn't get that far).
>
> Upon restart, I still get
>
> [ 0.000000] tsc: Fast TSC calibration failed
> [ 1.555656] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QC
> A6174/hw3.0/firmware-4.bin': -2
> [ 1.555719] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QC
> A6174/hw3.0/firmware-3.bin': -2
> [ 1.555780] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QC
> A6174/hw3.0/firmware-2.bin': -2
> [ 1.555842] ath10k_pci 0000:03:00.0: could not fetch board data (-2)
> [ 1.555892] ath10k_pci 0000:03:00.0: could not fetch firmware files (-2)
> [ 1.555942] ath10k_pci 0000:03:00.0: could not probe fw (-2)
> [ 3.772474] snd_hda_intel 0000:00:1f.3 failed to add i915 component master (
> -19)
> Exception AttributeError:"'NoneType' object has no attribute 'udev_unref'"in<
> bound method Context.__del__of <pyudev.core.Context object at 0x1621890>>ignor
> ed
>
> Given my confusion about the "missing" firmware-3.bin and firmware-2.bin and the apparent mismatch between the messages and kernel module, I went back to the start. I verified the network adapter:
>
> # lspci -nnk | grep Wireless
> 03:00.0 Network controller [0280]: Qualcom Atheros QCA6714 802.11ac Wireless Ne
> twork Adapter [168c:0003e] (rev 32)
>
> ath10k seems the correct module based on Google (I don't know, I'm new to Linux).
>
> So, then I went back and checked the ath10k messages:
>
> # dmesg | grep ath
> [     0.865212] ath: module verification failed: signature and/or required key missing - tainted kernal
> [     0.868655] ath10k_pci: 0000:03:00.0: irq 127 for MSI/MSI -X
> [     0.868662] ath10k_pci: 0000:03:00.0: irq 128 for MSI/MSI -X
> [     0.868666] ath10k_pci: 0000:03:00.0: irq 129 for MSI/MSI -X
> [     0.868668] ath10k_pci: 0000:03:00.0: irq 130 for MSI/MSI -X
> [     0.868673] ath10k_pci: 0000:03:00.0: irq 131 for MSI/MSI -X
> [     0.868677] ath10k_pci: 0000:03:00.0: irq 132 for MSI/MSI -X
> [     0.868682] ath10k_pci: 0000:03:00.0: irq 133 for MSI/MSI -X
> [     0.868686] ath10k_pci: 0000:03:00.0: irq 134 for MSI/MSI -X
> [     0.868884] ath10k_pci: 0000:03:00.0: pci irq msi-x interrupts 8 irq_mode 0 reset mode 0
> [     1.014435] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA6174/hw3.0/firmware-4.bin': -2
> [     1.014498] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA6174/hw3.0/firmware-3.bin': -2
> [     1.014559] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA6174/hw3.0/firmware-2.bin': -2
> [     1.014620] ath10k_pci 0000:03:00.0: could not fetch board data (-2)
> [     1.014670] ath10k_pci 0000:03:00.0: could not fetch firmware files (-2)
> [     1.014816] ath10k_pci 0000:03:00.0: could not probe fw (-2)
>
>
> I am guessing my issue lies with the "tainted kernal" message, but don't know how to proceed. Any suggestions?
>
>
> Sean
>
>
> --------------------------------------------
> On Wed, 8/17/16, Phil Perry <phil at elrepo.org> wrote:
>
>  Subject: Re: [elrepo] kmod-ath10k firmware issues (?) with CentOS 7
>  To: elrepo at lists.elrepo.org
>  Date: Wednesday, August 17, 2016, 12:20 PM
>
>  On 17/08/16 16:24, Sean
>  Hancock via elrepo wrote:
>  > I
>  successfully installed the firmware package: sudo rpm -Uvh
>  ath10k-firmware-2.0-1.el7.elrepo.noarch.rpm
>  >
>  > But, no joy:
>  >
>  > [ 0.000000] tsc: Fast
>  TSC calibration failed
>  > [ 2.736679]
>  snd_hda_intel 0000:00:1f.3 failed to add i915 component
>  master (
>  > -.9)
>  > [
>  2.880797] ath10k_pci 0000:03:00.0: could not fetch firmware
>  file 'ath10k/QC
>  >
>  A6174/hw3.0/firmware-4.bin': -2
>  > [
>  2.880873] ath10k_pci 0000:03:00.0: could not fetch firmware
>  file 'ath10k/QC
>  >
>  A6174/hw3.0/firmware-3.bin': -2
>  > [
>  2.880934] ath10k_pci 0000:03:00.0: could not fetch firmware
>  file 'ath10k/QC
>  >
>  A6174/hw3.0/firmware-2.bin': -2
>  > [
>  2.881054] ath10k_pci 0000:03:00.0: could not fetch board
>  data (-2)
>  > [ 2.881153] ath10k_pci
>  0000:03:00.0: could not fetch firmware files (-2)
>  > [ 2.881253] ath10k_pci 0000:03:00.0: could
>  not probe fw (-2)
>  > Exception
>  AttributeError:"'NoneType' object has no
>  attribute 'udev_unref'"in<
>  > bound method Context.__del__of
>  ,pyudev.core.Context object at 0x2947890>>ignor
>  > ed
>  >
>  >
>
>  We need
>  to find the right firmware(s) for that driver.
>
>   From your output above:
>
>   > [ 2.880797] ath10k_pci
>  0000:03:00.0: could not fetch firmware file
>  'ath10k/QC
>   >
>  A6174/hw3.0/firmware-4.bin': -2
>   > [
>  2.880873] ath10k_pci 0000:03:00.0: could not fetch firmware
>  file
>  'ath10k/QC
>   >
>  A6174/hw3.0/firmware-3.bin': -2
>   > [
>  2.880934] ath10k_pci 0000:03:00.0: could not fetch firmware
>  file
>  'ath10k/QC
>   >
>  A6174/hw3.0/firmware-2.bin': -2
>
>  looks like we need
>
>  ath10k/QCA6174/hw3.0/firmware-4.bin
>  ath10k/QCA6174/hw3.0/firmware-3.bin
>  ath10k/QCA6174/hw3.0/firmware-2.bin
>
>  yet the kernel module says
>  otherwise:
>
>  $ modinfo
>  ath10k_pci | grep firmware
>  firmware:
>     ath10k/QCA988X/hw2.0/board.bin
>  firmware:
>     ath10k/QCA988X/hw2.0/firmware-3.bin
>  firmware:
>     ath10k/QCA988X/hw2.0/firmware-2.bin
>  firmware:
>     ath10k/QCA988X/hw2.0/firmware.bin
>
>  Note /QCA6174/hw3.0/ versus
>  /QCA988X/hw2.0/ not to mention the different
>  firmware numbers.
>
>  Which is correct? I have no clue so good luck
>  working it out.
>
>  So lets
>  start at the beginning. There is a Wiki page with some info
>  here:
>
>  https://wireless.wiki.kernel.org/en/users/Drivers/ath10k/firmware
>
>  At a point of reference, your
>  kmod-ath10k-0.0-4.el7.elrepo.x86_64 driver
>  is backported from kernel-4.1.26.
>
>  The firmware(s) that I
>  packaged came from here:
>
>  https://github.com/kvalo/ath10k-firmware
>
>  You need to work out which
>  firmware(s) you require, and copy them in
>  place under /lib/firmware/ath10k/  Don't
>  be afraid to just dump
>  everything in there
>  and cover all possibilities - the driver will only
>  load the firmware it needs. The only caveat is
>  that the versions must be
>  correct.
>
>  Keep looking in dmesg for
>  clues as to what the driver is looking for.
>
>  Once you have figured it out,
>  let us know and we can package the
>  appropriate firmwares for the driver. I
>  can't do it for you as I don't
>  have
>  the hardware to test.
>
>  Good
>  luck!
>
>
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