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ath10k: add debugfs file warm_hw_reset

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Debugfs support to do hardware warm reset with WMI command
WMI_PDEV_PARAM_PDEV_RESET for 10.4 and 10.2.4(if wmi
service is enabled in the firmware for backward compatibility).

This change is purely for debugging purpose when hardware hangs/mutes.

This hardware reset won't affect the connectivity but there will be small
pause in data traffic. Here we are doing BB/MAC level reset and hence
whenever the BB/MAC watchdog is triggered, it does a hardware_chip_reset.
So the target will be in the active state.

Below command used to warm reset the hardware.
echo 1 > /sys/kernel/debug/ieee80211/phyX/ath10k/warm_hw_reset

Tested in QCA988X with firmware ver 10.2.4.70.45
Tested in QCA4019 with firmware ver 10.4-3.2.1.1-00011

Signed-off-by: Maharaja Kennadyrajan <mkenna@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Maharaja Kennadyrajan
2018-07-18 19:04:20 +05:30
committed by Kalle Valo
parent e82f57c8b9
commit db251d7df4
3 changed files with 65 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/net/wireless/ath/ath10k/wmi.h
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@@ -462,6 +462,7 @@ static inline char *wmi_service_name(int service_id)
SVCSTR(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS);
SVCSTR(WMI_SERVICE_HOST_DFS_CHECK_SUPPORT);
SVCSTR(WMI_SERVICE_TPC_STATS_FINAL);
SVCSTR(WMI_SERVICE_RESET_CHIP);
default:
return NULL;
}
@@ -3934,7 +3935,11 @@ enum wmi_10x_pdev_param {
WMI_10X_PDEV_PARAM_REMOVE_MCAST2UCAST_BUFFER,
WMI_10X_PDEV_PARAM_PEER_STA_PS_STATECHG_ENABLE,
WMI_10X_PDEV_PARAM_RTS_FIXED_RATE,
WMI_10X_PDEV_PARAM_CAL_PERIOD
WMI_10X_PDEV_PARAM_CAL_PERIOD,
WMI_10X_PDEV_PARAM_ATF_STRICT_SCH,
WMI_10X_PDEV_PARAM_ATF_SCHED_DURATION,
WMI_10X_PDEV_PARAM_SET_PROMISC_MODE_CMDID,
WMI_10X_PDEV_PARAM_PDEV_RESET
};
enum wmi_10_4_pdev_param {
@@ -6501,6 +6506,15 @@ struct wmi_force_fw_hang_cmd {
__le32 delay_ms;
} __packed;
enum wmi_pdev_reset_mode_type {
WMI_RST_MODE_TX_FLUSH = 1,
WMI_RST_MODE_WARM_RESET,
WMI_RST_MODE_COLD_RESET,
WMI_RST_MODE_WARM_RESET_RESTORE_CAL,
WMI_RST_MODE_COLD_RESET_RESTORE_CAL,
WMI_RST_MODE_MAX,
};
enum ath10k_dbglog_level {
ATH10K_DBGLOG_LEVEL_VERBOSE = 0,
ATH10K_DBGLOG_LEVEL_INFO = 1,