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ath11k: Add hw-restart option to simulate_fw_crash

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Add hw-restart to directly restart wlan. Like UTF mode start it will
restart hardware and download firmware again.

Usage:
1. Run command:
   echo hw-restart > /sys/kernel/debug/ath11k/qca6390\ hw2.0/simulate_fw_crash
   echo hw-restart > /sys/kernel/debug/ath11k/wcn6855\ hw2.0/simulate_fw_crash
2. wlan will be restart and do recovery process and success.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03003-QCAHSPSWPL_V1_V2_SILICONZ_LITE-2

Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220228064606.8981-4-quic_wgong@quicinc.com
This commit is contained in:
Wen Gong 2022-03-21 13:17:03 +02:00 committed by Kalle Valo
parent 38194f3a60
commit 78e3e60942
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/ath/ath11k/debugfs.c
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@ -596,6 +596,10 @@ static ssize_t ath11k_write_simulate_fw_crash(struct file *file,
ret = ath11k_wmi_force_fw_hang_cmd(ar,
ATH11K_WMI_FW_HANG_ASSERT_TYPE,
ATH11K_WMI_FW_HANG_DELAY);
} else if (!strcmp(buf, "hw-restart")) {
ath11k_info(ab, "user requested hw restart\n");
queue_work(ab->workqueue_aux, &ab->reset_work);
ret = 0;
} else {
ret = -EINVAL;
goto exit;