QCA6174 hw2.1 firmware, take two?

[Enrico Tagliavini]

Hi there,

Just got the following device

enrico at alientux ~ $ lspci -nn | grep QCA
03:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac
Wireless Network Adapter [168c:003e] (rev 20)

And discovered there is no firmware available for it. I looked already
at the April thread about it, but didn't managed to get it working.
This is on Fedora 22, kernel 4.0.4.

I used dissect.py from here
https://gist.github.com/kazikcz/8e5845ad84ca251aa295 to generate the
firmware image from my Windows installation:
$ cat /windows/Windows/System32/DriverStore/FileRepository/netathrx.inf_amd64_481f6e2b133b287d/qca61x420.bin
| ./dissect.py

but I have no clue if that is actually the correct file. For sure it's
the only one containing "qca" end ending in ".bin" alongside
eeprom_qca9377_1p0_NFA435_olpc.bin which I used as board.bin.

Unfortunately when trying those I get
root at alientux ~ # dmesg | grep ath
[   18.518677] ath10k_pci 0000:03:00.0: enabling device (0000 -> 0002)
[   18.519124] ath10k_pci 0000:03:00.0: pci irq msi-x interrupts 8
irq_mode 0 reset_mode 0
[   18.667191] ath10k_pci 0000:03:00.0: Direct firmware load for
ath10k/cal-pci-0000:03:00.0.bin failed with error -2
[   18.668652] ath10k_pci 0000:03:00.0: invalid firmware magic
[   18.668791] ath10k_pci 0000:03:00.0: invalid firmware magic
[   18.670086] ath10k_pci 0000:03:00.0: invalid firmware magic
[   18.670265] ath10k_pci 0000:03:00.0: Direct firmware load for
ath10k/QCA6174/hw2.1/firmware.bin failed with error -2
[   18.670267] ath10k_pci 0000:03:00.0: could not fetch firmware (-2)
[   18.670269] ath10k_pci 0000:03:00.0: could not fetch firmware files (-2)
[   18.670271] ath10k_pci 0000:03:00.0: could not probe fw (-2)

No idea where to go from here. I'm currently not sure if I want to try
kvalo sources. Don't get me wrong but if I have to apply a patch to
the official Linux source tree that's ok, but switching to the
development tree is not what I was looking forward for this machine.
Can 4.1 help instead? I'm afraid it might now since I can see the fix
for the firmware crash is still not included.

Thank you for the help.
Best regards.

Enrico