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 <[email protected]> --- drivers/net/wireless/ath/ath10k/debug.c | 49 +++++++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath10k/wmi.c | 2 +- drivers/net/wireless/ath/ath10k/wmi.h | 16 ++++++++++- 3 files changed, 65 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c index 4926722..0baaad9 100644 --- a/drivers/net/wireless/ath/ath10k/debug.c +++ b/drivers/net/wireless/ath/ath10k/debug.c @@ -2297,6 +2297,52 @@ static ssize_t ath10k_tpc_stats_final_read(struct file *file, .llseek = default_llseek, }; +static ssize_t ath10k_write_warm_hw_reset(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath10k *ar = file->private_data; + int ret; + bool val; + + if (kstrtobool_from_user(user_buf, count, &val)) + return -EFAULT; + + if (!val) + return -EINVAL; + + mutex_lock(&ar->conf_mutex); + + if (ar->state != ATH10K_STATE_ON) { + ret = -ENETDOWN; + goto exit; + } + + if (!(test_bit(WMI_SERVICE_RESET_CHIP, ar->wmi.svc_map))) + ath10k_warn(ar, "wmi service for reset chip is not available\n"); + + ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pdev_reset, + WMI_RST_MODE_WARM_RESET); + + if (ret) { + ath10k_warn(ar, "failed to enable warm hw reset: %d\n", ret); + goto exit; + } + + ret = count; + +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static const struct file_operations fops_warm_hw_reset = { + .write = ath10k_write_warm_hw_reset, + .open = simple_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; + int ath10k_debug_create(struct ath10k *ar) { ar->debug.cal_data = vzalloc(ATH10K_DEBUG_CAL_DATA_LEN); @@ -2425,6 +2471,9 @@ int ath10k_debug_register(struct ath10k *ar) ar->debug.debugfs_phy, ar, &fops_tpc_stats_final); + debugfs_create_file("warm_hw_reset", 0600, ar->debug.debugfs_phy, ar, + &fops_warm_hw_reset); + return 0; } diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index 877249a..2fb972e 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -1333,7 +1333,7 @@ .enable_per_tid_ampdu = WMI_PDEV_PARAM_UNSUPPORTED, .cca_threshold = WMI_PDEV_PARAM_UNSUPPORTED, .rts_fixed_rate = WMI_PDEV_PARAM_UNSUPPORTED, - .pdev_reset = WMI_PDEV_PARAM_UNSUPPORTED, + .pdev_reset = WMI_10X_PDEV_PARAM_PDEV_RESET, .wapi_mbssid_offset = WMI_PDEV_PARAM_UNSUPPORTED, .arp_srcaddr = WMI_PDEV_PARAM_UNSUPPORTED, .arp_dstaddr = WMI_PDEV_PARAM_UNSUPPORTED, diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h index d68afb6..e24d869 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.h +++ b/drivers/net/wireless/ath/ath10k/wmi.h @@ -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, -- 1.9.1 _______________________________________________ ath10k mailing list [email protected] http://lists.infradead.org/mailman/listinfo/ath10k
