Firmware 4 vs Firmware 6 for QCA6174 hw3.0

Firmware 4 vs Firmware 6 for QCA6174 hw3.0

[Nicolò Sprea]

Hi,
What are the differences between firmware 4 and firmware 6 for QCA6174 hw3.0?
Is there a release note?

Regards,
nsprea

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Re: Firmware 4 vs Firmware 6 for QCA6174 hw3.0

[Kalle Valo]

Nicolò Sprea <nsprea@gmail.com> writes:

> What are the differences between firmware 4 and firmware 6 for QCA6174
> hw3.0?

They are just different firmware interface versions to maintain
backwards compatibility:

https://wireless.wiki.kernel.org/en/users/drivers/ath10k/firmware#firmware_api_versions

The actual firmware versions are strings like 'WLAN.RM.4.4.1-00288-QCARMSWPZ-1'.

https://github.com/kvalo/ath10k-firmware/tree/master/QCA6174/hw3.0/4.4.1

> Is there a release note?

If you are asking releases notes for firmware releases, unfortunately no.

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Re: Firmware 4 vs Firmware 6 for QCA6174 hw3.0

[Nicolò Sprea]

Thanks for the answer.
Is there any feature that uses only api 6?
If I want to downgrade to api 4, is there anything that I should pay
attention to?

On Wed, Jun 8, 2022 at 8:35 AM Kalle Valo <kvalo@kernel.org> wrote:
>
> Nicolò Sprea <nsprea@gmail.com> writes:
>
> > What are the differences between firmware 4 and firmware 6 for QCA6174
> > hw3.0?
>
> They are just different firmware interface versions to maintain
> backwards compatibility:
>
> https://wireless.wiki.kernel.org/en/users/drivers/ath10k/firmware#firmware_api_versions
>
> The actual firmware versions are strings like 'WLAN.RM.4.4.1-00288-QCARMSWPZ-1'.
>
> https://github.com/kvalo/ath10k-firmware/tree/master/QCA6174/hw3.0/4.4.1
>
> > Is there a release note?
>
> If you are asking releases notes for firmware releases, unfortunately no.
>
> --
> https://patchwork.kernel.org/project/linux-wireless/list/
>
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

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Re: Firmware 4 vs Firmware 6 for QCA6174 hw3.0

[Kalle Valo]

Nicolò Sprea <nsprea@gmail.com> writes:

> Thanks for the answer.
> Is there any feature that uses only api 6?
> If I want to downgrade to api 4, is there anything that I should pay
> attention to?

The interface number itself does not change any functionality, what
matters are the actual firmware release versions. And of course older
firmware releases have more bugs and less features. It would be easier
for people to help if you describe what's the actual problem you are
trying to solve.

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Re: Firmware 4 vs Firmware 6 for QCA6174 hw3.0

[Nicolò Sprea]

# Using:
driver: ath10k_pci
version: 4.15.0-38-generic
firmware-version: WLAN.RM.4.4.1-00079-QCARMSWPZ-1

# Problem:
When wpa_supplicant re-associates, I get the following issue:
ath10k_pci 0000:02:00.0: failed to flush transmit queue (skip 0 ar-state 1): 0
and all the interfaces (including loopback) "freeze" for a few seconds.

# Solutions:
1. using firmware version WLAN.RM.2.0-00180-QCARMSWPZ-1
2. backporting driver

# My question:
What are the missing features/known bugs of WLAN.RM.2.0-00180-QCARMSWPZ-1?

On Wed, Jun 8, 2022 at 9:43 AM Kalle Valo <kvalo@kernel.org> wrote:
>
> Nicolò Sprea <nsprea@gmail.com> writes:
>
> > Thanks for the answer.
> > Is there any feature that uses only api 6?
> > If I want to downgrade to api 4, is there anything that I should pay
> > attention to?
>
> The interface number itself does not change any functionality, what
> matters are the actual firmware release versions. And of course older
> firmware releases have more bugs and less features. It would be easier
> for people to help if you describe what's the actual problem you are
> trying to solve.
>
> --
> https://patchwork.kernel.org/project/linux-wireless/list/
>
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

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Re: Firmware 4 vs Firmware 6 for QCA6174 hw3.0

[Kalle Valo]

Nicolò Sprea <nsprea@gmail.com> writes:

> # Using:
> driver: ath10k_pci
> version: 4.15.0-38-generic
> firmware-version: WLAN.RM.4.4.1-00079-QCARMSWPZ-1
>
> # Problem:
> When wpa_supplicant re-associates, I get the following issue:
> ath10k_pci 0000:02:00.0: failed to flush transmit queue (skip 0 ar-state 1): 0
> and all the interfaces (including loopback) "freeze" for a few seconds.
>
> # Solutions:
> 1. using firmware version WLAN.RM.2.0-00180-QCARMSWPZ-1
> 2. backporting driver

v4.15 was released four years ago so for us it's ancient. I recommend
updating the kernel or using backports project:

https://backports.wiki.kernel.org/index.php/Main_Page

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