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

[Kalle Valo]

Wen Gong <wgong at codeaurora.org> writes:

> From: Wen Gong <quic_wgong at 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 at nuc1:~# echo assert > /sys/kernel/debug/ath11k/qca6390\ hw2.0/simulate_fw_crash
root at nuc1:~# iw wlan0 scan
command failed: Connection timed out (-110)
root at 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

Also there should be a clear ath11k_warn() message when firmware
recovery was successful, I could not find one from patches.

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