linux-kernel - Re: [PATCH v3] wifi: ath10k: Add WLAN firmware image version info into smem

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Date:   Mon, 14 Nov 2022 14:59:31 +0200
From:   Kalle Valo <kvalo@...nel.org>
To:     Youghandhar Chintala <quic_youghand@...cinc.com>
Cc:     <ath11k@...ts.infradead.org>, <linux-wireless@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_mpubbise@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v3] wifi: ath10k: Add WLAN firmware image version info into smem

Youghandhar Chintala <quic_youghand@...cinc.com> writes:

> In a SoC based solution, it would be useful to know the versions of the
> various binary firmware blobs the system is running on. On a QCOM based
> SoC, this info can be obtained from socinfo debugfs infrastructure. For
> this to work, respective subsystem drivers have to export the firmware
> version information to an SMEM based version information table.
>
> Having firmware version information at one place will help quickly
> figure out the firmware versions of various subsystems on the device
> instead of going through builds/logs in an event of a system crash.
>
> Fill WLAN firmware version information in SMEM version table to be
> printed as part of socinfo debugfs infrastructure on a Qualcomm based
> SoC.
>
> This change is applicable only for WCN399X targets.
>
> Example:
> cat /sys/kernel/debug/qcom_socinfo/cnss/name
> QC_IMAGE_VERSION_STRING=WLAN.HL.3.2.2.c10-00754-QCAHLSWMTPL-1
>
> Reported-by: kernel test robot <lkp@...el.com>
>
> Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.2.2.c10-00754-QCAHLSWMTPL-1
>
> Signed-off-by: Youghandhar Chintala <quic_youghand@...cinc.com>
> ---
> Changes from v2:
>  - Removed blank line between trailers
>  - Changed memcpy to strscpy
>  - Removed version_string_size
>  - Added new condition fw_build_id against max length
>  - Added depends on QCOM_SMEM for ath10k_snoc
> ---
>  drivers/net/wireless/ath/ath10k/Kconfig |  1 +
>  drivers/net/wireless/ath/ath10k/qmi.c   | 34 +++++++++++++++++++++++++
>  2 files changed, 35 insertions(+)
>
> diff --git a/drivers/net/wireless/ath/ath10k/Kconfig b/drivers/net/wireless/ath/ath10k/Kconfig
> index ca007b800f75..e6ea884cafc1 100644
> --- a/drivers/net/wireless/ath/ath10k/Kconfig
> +++ b/drivers/net/wireless/ath/ath10k/Kconfig
> @@ -44,6 +44,7 @@ config ATH10K_SNOC
>  	tristate "Qualcomm ath10k SNOC support"
>  	depends on ATH10K
>  	depends on ARCH_QCOM || COMPILE_TEST
> +	depends on QCOM_SMEM
>  	select QCOM_SCM
>  	select QCOM_QMI_HELPERS

Is there a reason why you used "depends on"? Other QCOM dependencies
used "select", so I'm wondering if QCOM_SMEM should also use select?

Please also use ath10k list for ath10k patches, not ath11k.

-- 
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https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches