Re: [PATCH v3 0/3] ath11k: add feature for device recovery

From: Kalle Valo <kvalo@codeaurora.org>
To: Wen Gong <wgong@codeaurora.org>
Cc: ath11k@lists.infradead.org,  linux-wireless@vger.kernel.org
Subject: Re: [PATCH v3 0/3] ath11k: add feature for device recovery
Date: Wed, 17 Nov 2021 10:08:28 +0200	[thread overview]
Message-ID: <87sfvvdx1f.fsf@codeaurora.org> (raw)
In-Reply-To: <a9efda4011061f2f0d57ea597b9b8f0e@codeaurora.org> (Wen Gong's message of "Tue, 16 Nov 2021 12:19:28 +0800")

Wen Gong <wgong@codeaurora.org> writes:

> On 2021-11-15 20:53, Kalle Valo wrote:
>> Wen Gong <wgong@codeaurora.org> writes:
>>
>>> From: Wen Gong <quic_wgong@quicinc.com>
>>>
>>> v3: remove time_left set but not used in
>>>     "ath11k: add synchronization operation between reconfigure of
>>> mac80211 and ath11k_base"
>>>
>>> v2: s/initilized/initialized in commit log of patch
>>>     "ath11k: add synchronization operation between reconfigure of
>>> mac80211 and ath11k_base"
>>>
>>> Add support for device recovery.
>>>
>>> Wen Gong (3):
>>>   ath11k: add ath11k_qmi_free_resource() for recovery
>>>   ath11k: add support for device recovery for QCA6390
>>>   ath11k: add synchronization operation between reconfigure of
>>> mac80211
>>>     and ath11k_base
>>
>> I did some quick testing (commit 4716d5bb1e16 in pending branch) and it
>> does not seem to work for me:
>>
>> oot@nuc1:~# echo assert > /sys/kernel/debug/ath11k/qca6390\
>> hw2.0/simulate_fw_crash
>> root@nuc1:~# iw wlan0 scan
>> command failed: Connection timed out (-110)
>> root@nuc1:~#
>>
>> Kernel logs have:
>>
>> [  118.903092] ath11k_pci 0000:06:00.0: BAR 0: assigned [mem
>> 0xdb000000-0xdbffffff 64bit]
>> [  118.925164] ath11k_pci 0000:06:00.0: MSI vectors: 32
>> [  118.925285] ath11k_pci 0000:06:00.0: qca6390 hw2.0
>> [  119.093214] mhi mhi0: Requested to power ON
>> [  119.095430] mhi mhi0: Power on setup success
>> [  119.423735] mhi mhi0: Wait for device to enter SBL or Mission mode
>> [  119.543030] ath11k_pci 0000:06:00.0: chip_id 0x0 chip_family 0xb
>> board_id 0xff soc_id 0xffffffff
>> [  119.543197] ath11k_pci 0000:06:00.0: fw_version 0x101c06cc
>> fw_build_timestamp 2020-06-24 19:50 fw_build_id
>> [  230.101077] ip (2367) used greatest stack depth: 24384 bytes left
>> [  283.663895] ath11k_pci 0000:06:00.0: simulating firmware assert
>> crash
>> [  283.738422] ath11k_pci 0000:06:00.0: firmware crashed:
>> MHI_CB_SYS_ERROR
>> [  295.236831] ath11k_pci 0000:06:00.0: wmi command 12290 timeout
>> [  295.237937] ath11k_pci 0000:06:00.0: failed to send
>> WMI_STOP_SCAN_CMDID
>> [  295.238467] ath11k_pci 0000:06:00.0: failed to stop wmi scan: -11
>> [  295.240049] ath11k_pci 0000:06:00.0: failed to stop scan: -11
>> [  295.240558] ath11k_pci 0000:06:00.0: failed to start hw scan: -110
>>
>
> I have sent v4, it is not to fix your fail:)
> It added patch "ath11k: fix invalid m3 buffer address".
> https://patchwork.kernel.org/project/linux-wireless/cover/20211116041522.23529-1-quic_wgong@quicinc.com/
>
>
>> Also there should be a clear ath11k_warn() message when firmware
>> recovery was successful, I could not find one from patches.
>
> Yes, if recovery succes, it will have "success" log.

Where are the printouts? I cannot find any ath11k_warn() messages in v4.
Basically I would want to see something like this when the firmware
crashes:

firmware crashed, restarting it

And once the firmware is running again:

firmware restarted succesfully

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